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Bucket Elevator Conveyor
Bucket elevator conveyor is a common transportation equipment that can vertically lift granular, powdery and small block materials. It is widely used in feed, grain, oil, food, mineral transportation, building materials, chemical industry and other industries.
Bucket elevators have the advantages of small floor space, sealed transportation throughout, less environmental pollution, and low investment. They are commonly used conveying equipment for conveying bulk materials.
As one of the professional bucket elevator manufacturers, we offer a variety of bucket conveyor designs and sizes to handle various materials. Bucket elevators are custom designed for your application. Bulk material characteristics, capacity and overall height are considered when designing bucket conveyor systems.
- Model:TDTG
- Maximum height：3-56 M
- Power: 4-27KW
Application of bucket elevator conveyor
Continuous bucket elevators can handle a variety of materials, and therefore are used in many different industries and applications, though generally, they are not suited for wet, sticky materials, or materials that are stringy or tend to mat or agglomerate.
They are frequently found in bulk material handling settings such as animal feed mill plant, power plants, wood pellet plant, biomass pellet plant, fertilizer plants, pulp & paper mills, and steel production facilities. Some of the most common materials for which bucket elevator conveyors are employed include:
- Animal Feeds
- Wood chips
- Fertilizer
- Aggregates
- Calcined Coke
- Coal
- Flyash
- Frac Sand
- Minerals
- …
Not sure if your material can be handled in a bucket elevator? Contact us and we will be more than happy to help!
Characteristics of bucket elevator conveyor
The bucket elevator relies on the continuous movement of the traction components surrounding the head and bottom wheels, and completes the conveying process by loading, lifting, and unloading materials through a bucket (also called a hopper) fixed on the traction components.
It has a compact structure and It has the advantages of low power consumption, low noise, and large lifting height.
- Widely used for the vertically conveying of powdery or granular bulk material in grain terminals, port terminals as well as such industries as feed, flour, rice, edible oil etc.
- Compact structure, small footprint.
- Excellent sealing performance and venting in case of dust explosion.
- Optional devices for preventing the sideslip and back-stop to ensure safety and belt alignment.
- Removable top covers.
- Access doors for easy maintenance.
- Horizontally and vertically heavy-reinforced, jig welded head, boot, and intermediate sections.
- Adjustable throat plate at discharge.
- Inspection doors on both sides of discharge.
- Service platforms and access ladders available
- Heavy-duty construction.
- Custom design.
- Various bucket designs available.
Compared with other conveying equipment, elevator bucket conveyors can adjust the material conveying speed and flow control as needed, thereby achieving a higher degree of automation and energy utilization efficiency, reducing energy consumption, and improving production efficiency.
Technical parameters of bucket elevator conveyor
bucket conveyor for sale – TDTG26/18
| Model | TDTG26/18 | |||
|---|---|---|---|---|
| Linear velocity of the belt(m/s) | 1.23 | |||
| Bucket volume(L) | 1.3 | |||
| Power(kw) | 2.2 | 3 | 4 | 5.5 |
| Reducer | XWD4-17-2.2 | XWD4-17-3 | XWD4-17-4 | XWD5-17-5.5 |
| Maximum height(m) | 3-10 | 10-20 | 20-35 | 35-56 |
| Conveying volume(m³/h) | 20 | |||
bucket conveyor for sale – TDTG40/23
| Model | TDTG40/23 | ||||
|---|---|---|---|---|---|
| Linear velocity of the belt(m/s) | 1.71 | ||||
| Bucket volume(L) | 2.27 | ||||
| Power(kw) | 3 | 4 | 5.5 | 7.5 | 11 |
| Reducer | XWD4-17-3 | XWD4-17-4 | XWD5-17-5.5 | XWD5-17-7.5 | XWD6-17-11 |
| Maximum height(m) | 3-9 | 9-15 | 15-23 | 23-35 | 35-54 |
| Conveying volume(m³/h) | 50 | ||||
bucket elevator for sale – TDTG40/28
| Model | TDTG40/28 | ||||
|---|---|---|---|---|---|
| Linear velocity of the belt(m/s) | 1.71 | ||||
| Bucket volume(L) | 2.7 | ||||
| Power(kw) | 3 | 4 | 5.5 | 7.5 | 11 |
| Reducer | XWD4-17-3 | XWD4-17-4 | XWD5-17-5.5 | XWD5-17-7.5 | XWD6-17-11 |
| Maximum height(m) | 3-8 | 8-12 | 12-19 | 19-29 | 29-45 |
| Conveying volume(m³/h) | 60 | ||||
bucket elevator for sale – TDTG50/23
| Model | TDTG40/23 | ||||
|---|---|---|---|---|---|
| Linear velocity of the belt(m/s) | 2.14 | ||||
| Bucket volume(L) | 2.27 | ||||
| Power(kw) | 3 | 4 | 5.5 | 7.5 | 11 |
| Reducer | XWD4-17-3 | XWD4-17-4 | XWD5-17-5.5 | XWD5-17-7.5 | XWD6-17-11 |
| Maximum height(m) | 3-7 | 7-12 | 12-19 | 19-28 | 28-43 |
| Conveying volume(m³/h) | 60 | ||||
bucket elevator for sale – TDTG50/28
| Model | TDTG50/28 | ||||
|---|---|---|---|---|---|
| Linear velocity of the belt(m/s) | 2.14 | ||||
| Bucket volume(L) | 2.7 | ||||
| Power(kw) | 3 | 4 | 5.5 | 7.5 | 11 |
| Reducer | XWD4-17-3 | XWD4-17-4 | XWD5-17-5.5 | XWD5-17-7.5 | XWD6-17-11 |
| Maximum height(m) | 3-6 | 6-10 | 10-16 | 16-23 | 23-36 |
| Conveying volume(m³/h) | 70 | ||||
bucket elevator – TDTGK63/28
| Model | TDTGK63/28 | |||||
|---|---|---|---|---|---|---|
| Linear velocity of the belt(m/s) | 2.87 | |||||
| Bucket volume(L) | 3.9 | |||||
| Power(kw) | 5.5 | 7.5 | 11 | 15 | 18.5 | 22 |
| Reducer | XWD5-17-5.5 | XWD5-17-7.5 | XWD6-17-11 | XWD7-17-15 | Helical Gear | Helical Gear |
| Maximum height(m) | 3-8 | 8-12 | 12-19 | 19-27 | 17-34 | 34-41 |
| Conveying volume(m³/h) | 140 | |||||
Bucket elevator systems can transport materials vertically up to 80m, and are generally used when the vertical transport distance is less than 40m. Commonly used bucket elevators are all vertical.
RICHI Machinery mainly develops and manufactures new TDTG type high-efficiency bucket elevators. Customers can choose the appropriate type based on equipment capabilities, material characteristics suitable for conveying by the bucket elevator, material temperature, etc.
bucket elevator conveyor cases
bucket elevator for sale Algeria
- Application: 6-10T/H Poultry Animal Feed Plant
bucket elevator for sale Uzbekistan
- Application: 10-15T/H Chicken Animal Feed Plant
grain bucket elevator for sale Peru
- Application: 5T/H Animal Feed Plant
grain bucket elevator for sale Malaysia
- Application: 3-5T/H Broiler Feed Plant
bucket conveyor for sale Nigeria
- Application: 1-2T/H Poultry Feed Plant
bucket conveyor for sale oman
- Application: 15T/H Aqua Poultry Feed Plant
bucket elevator for sale Russia
- Application: 5-7 T/H Poultry Chicken Feed Plant
bucket elevator for sale Angola
- Application: 10T/H Poultry Pellet Plant
How to choose a bucket elevator conveyor?
Industrial bucket elevator is a commonly used material conveying equipment, usually used in cement, mining and other industries. When selecting, you need to consider:
- Material properties
- Delivery volume
- Conveying distance and height
- Equipment structure and materials
- Device control methods
- Transmission form;
- Bucket shape of bucket elevator
- Bucket volume of bucket elevator
- The unloading method of bucket elevator
- cleaning and maintenance
- Equipment brand and after-sales service
- Equipment footprint
- transfer speed
- Applicable environment and temperature
- . . .
(1) Material characteristics
First, you need to understand the characteristics of the material to be transported, including particle size, density, humidity and fluidity. These factors will directly affect the selection and use of bucket elevator conveyors.
(2) Conveying volume
Select the appropriate bucket elevator according to the actual conveying volume requirements. Generally speaking, the greater the conveying volume, the larger the equipment required and the higher the power.
(3) Conveying distance and height
The conveying distance and height have a great influence on the selection and design of the bucket elevator. It is necessary to determine the conveying distance and height according to actual needs, and select equipment that can meet the requirements.
(4) Equipment structure and materials
The structure and material of the bucket elevator have a great impact on the life and use effect of the equipment.
- It is necessary to choose materials with good corrosion resistance, wear resistance and high temperature resistance, such as stainless steel, cast steel, etc.
- At the same time, it is also necessary to consider whether the structural design of the equipment is reasonable to facilitate cleaning and maintenance.
(5) Equipment control method
Bucket conveyor control methods usually include manual and automatic. In actual applications, it is necessary to choose the appropriate control method according to the environment and application requirements.
(6) Transmission form
Transmission forms include electric, hydraulic, pneumatic and other forms. The appropriate transmission form needs to be selected according to the actual needs of the equipment.
(7) Bucket Shape
The bucket shape of the bucket conveyor system will affect the operation effect of the equipment and the transportation effect of the material. It is necessary to select the appropriate bucket shape according to the characteristics of the material and the transportation requirements.
(8) Bucket Volume
The bucket volume depends on the density and conveying volume of the material. The appropriate bucket volume needs to be selected according to actual needs to ensure the normal operation of the equipment.
(9) Unloading Method
There are two unloading methods of bucket elevator conveyor: gravity unloading and forced unloading. The appropriate unloading method needs to be selected according to actual needs.
(10) Cleaning And Maintenance
During the use of elevator bucket conveyors, regular cleaning and maintenance work is required to extend the service life of the equipment and ensure its normal operation.
For example, the bucket, chain and wheels should be cleaned frequently, and the motor and control system should be checked regularly to ensure the normal operation of the equipment.
(11) Equipment Brand And After-sales Service
The brand and after-sales service of the equipment are also factors that need to be considered when selecting a model. You need to choose equipment from a well-known brand and understand its after-sales service policy and warranty period to ensure subsequent maintenance and service of the equipment.
(12) Equipment Footprint
Bucket elevators require sufficient space for installation and operation when in use, and the appropriate installation location needs to be selected according to the size and shape of the equipment to ensure normal operation of the equipment.
(13) Conveying Speed
Conveying speed is also one of the factors that needs to be considered when selecting a bucket elevator system. The conveying speed needs to be determined according to the characteristics of the material and the conveying volume requirements, and the corresponding equipment must be selected.
(14) Applicable Environment And Temperature
Bucket elevator conveyors are usually used in harsh environments, such as high temperature, humidity, dust, etc. Appropriate equipment needs to be selected based on actual needs and the maximum operating temperature of the equipment must be considered.
In short, the selection of bucket elevator conveyor needs to comprehensively consider a variety of factors and make a selection based on actual needs.
At the same time, attention should be paid to the cleaning, maintenance and safe use of the equipment to ensure the normal operation of the equipment.
types of bucket elevator
With the development of the economy, industries such as grain, oil, and feed are developing rapidly.
Since bucket elevator conveyors are the main equipment for vertical transportation of materials, the demand for bucket elevators in various industries is also increasing, and the requirements are becoming higher and higher.
Bucket conveyors are divided into vertical type and inclined type according to the installation method, among which the vertical type is the most common.
01 According to the form of traction components, they are divided into belt type and chain type.
- The belt elevator has a high lifting speed and is suitable for lifting powdery or small-block materials. Because of its low strength, it is not suitable for use in situations with large load-bearing capacity.
- The chain elevator has high strength and large load-bearing capacity, and is suitable for lifting medium or large materials.
02 According to the form of hopper, it is divided into deep hopper, shallow hopper and hopper with ribs.
- Deep bucket is suitable for transporting coal, dry sand, gravel, lime and other materials that are easy to pour out;
- Shallow buckets are suitable for transporting materials such as cement or wet sand that are easy to form agglomerates or stick to the hopper;
- The hopper with ribs is suitable for conveying large pieces of materials.
03 According to the unloading characteristics, it is divided into centrifugal type, centrifugal-gravity type and gravity type.
- Centrifugal discharge is mainly belt type, suitable for transporting powdery, granular and small lump materials with good fluidity.
- Gravity unloading uses a hopper with ribs to transport blocky and heavy materials.
- Centrifugal-gravity discharge is between the above two.
The correct selection of the types of bucket conveyor is related to whether it can fully utilize its efficiency.
The transportation efficiency of the bucket elevator is related to parameters such as the lifting speed of the hopper, the volume of the hopper, and the installation density of the hopper.
Correctly calculating the tension of the bucket elevator has important reference value for further designing the drive shaft and selecting conveyor belts or chain plates.
Innovative design of RICHI bucket elevator conveyor
Innovative design of the casing
In view of the phenomenon that the casing is easy to wear during transportation, RICHI bucket elevator conveyor has innovatively designed a new type of casing, which can reduce the impact of the casing on the vibration of grain during transportation, thereby extending the service life.
- The barrel is usually made of 1~2mm thick steel plate. Considering that this design is to unload grain with medium to high output and high efficiency, the thickness of the casing is 3mm.
- The four corners of the barrel are equipped with angle steel to enhance its rigidity.
- In order to make the casing easy to install and repair, it is assembled from standard sections. The length of each section is 2~2.5m, and the two sections of each section are welded with angle steel.
- In order to ensure the sealing performance of the barrel, gaskets are used to connect each section of the casing, and then bolts are used to fix them.
- In order to enhance the strength of the casing and consider reducing the overall weight, this design adds cross beams to the periphery of the casing, which can also enhance its rigidity.
- At the same time, an observation window and an access door are set up outside the casing to facilitate staff to observe the loading, lifting and conveying conditions of materials at all times.
- The observation window is set at a height of 1.5m from the ground for easy observation.
- At the same time, the access door is also set at a height of about 1 to 2m from the ground, and the width of the access door is 1.4m, making it easier for staff to replace the bucket and perform maintenance.
Innovative design of head wheel and bottom wheel
Generally, the head wheel and bottom wheel of the bucket elevator conveyor are made of cast iron or cast steel. In some cases, they are also welded with steel plates when the size is larger.
Since the output of the elevator designed by RICHI meets the medium to high output requirements, the designed head wheel size is also larger than ordinary ones.
- Making the bottom wheel into a squirrel cage shape can prevent materials from being caught between the belt and the bottom wheel, thus preventing possible slipping.
- In order to prevent the belt from deflecting, the shape of the head wheel and bottom wheel can be made into a drum shape, with a general protrusion height of 2 to 4mm.
- The width of the head wheel and bottom wheel should be 20~50mm wider than the belt. Because under normal circumstances, the head wheel of the bucket elevator is the driving wheel, it is very important to cover the circumference of the head wheel with a layer of rubber material. It can not only prevent slipping, but also increase the friction coefficient and durability of the head wheel.
Design of tensioning device
The traditional tensioning device usually tightens the belt by adjusting the bottom wheel and changing its up and down position. This tensioning device changes the position of the bottom wheel, causing the excavation coefficient to change. It also changes the angle of the bucket when excavation of raw materials, so it is difficult to ensure that its carrying capacity reaches the best effect.
The tensioning device designed by RICHI changes the tensioning length by changing the expansion and contraction of part of the casing, and changes the tensioning force by changing the telescopic rod. This tensioning scheme will not change the height and angle of the bottom material bucket from the grain during the tensioning process, so it is more effective.
Through research on the bucket and particle throwing simulation, the RICHI engineering team determined the best shape of the bucket and optimized the structural size of the head wheel cover. The backflow of raw materials basically disappeared, thereby improving transportation efficiency.
At the same time, our engineers have improved some key structures of the bucket elevator conveyor, making the bucket conveyor run smoothly and extending its service life, which can bring certain economic benefits.
Working principle of bucket elevator conveyor
The working principle of the bucket conveyor system:
- The bucket belt is wrapped around the head wheel and the tail wheel.
- The bucket is fixed on the bucket belt at a certain distance.
- The external driving device drives the head wheel to rotate, and the material flows into the machine base from the feed hopper.
- Finally, it is dug out by the moving bucket, lifted along the barrel, thrown out from the discharge hopper at the machine head, and discharged through the discharge pipe.
The base components of the bucket elevator system are mainly composed of the base shell, tail wheel, tail wheel shaft, tensioning device, feed hopper and other parts.
The base components of the bucket elevator system are mainly composed of the base shell, tail wheel, tail wheel shaft, tensioning device, feed hopper and other parts.
- The machine base shell has two types: round machine base with self-cleaning and ordinary machine base;
- The most widely used tail wheel is the squirrel cage roller;
- There are 3 tensioning methods: screw type, weight type and spring screw combination;
- The feeding hopper can choose an ordinary feeding hopper or a buffered feeding hopper according to the material. There are also two feeding methods: forward feeding and reverse feeding.
According to the characteristics of the material, the linear speed and spatial position of the bucket elevator are selected.
RICHI industrial bucket elevators are capable of handling most free flowing materials as well as many materials with poor flow characteristics.
The specification of the RICHI standard range of bucket elevators is also easily tailored to suit: Fragile or friable materials, oily materials and their products, materials which fluidise, abrasive materials, hot or wet environments…
Bucket elevator conveyor installation process
When installing a grain bucket elevator, it is necessary to implement hierarchical working principles and continuously optimize the current work plan, so that the installation effect of the bucket elevator can be comprehensively improved.
- First of all, in actual work, it is necessary to determine the direction of the center line. The direction of the center line is the baseline during the installation of each component.
It requires relevant management personnel to carefully check, such as the position of the reserved bolt holes on each floor foundation, and match it with the design plan, so as to promptly discover any deviations and improve them. and adjust the current installation mode to better suit subsequent use requirements. - During the installation process, it is necessary to configure the center line, clear all errors and defects of the stock parts, install after inspection, and optimize the current working mode, so that the installation effect can be comprehensively improved.
- During the installation process, according to the overall plan, from the bottom bracket and tail of the bucket elevator conveyor machine installed upward, through different parts such as the closed section and nose, several layers need to be passed during the installation process.
Special attention must be paid to the load carried by each bracket during installation. The load is uniform, gradually improving the current installation pattern. - During the installation process, the bottom bracket and tail of the machine are installed from top to bottom according to the general plan, passing through different parts such as the closed section and the machine head.
The installation process requires several layers. Special attention must be paid to each bracket during the installation process.
The load is uniform and compared with the expected situation, so that the levelness of the entire machine can be comprehensively improved. - After completing this operation, the position of the steel channel needs to be fixed to avoid instability during subsequent use of the elevator and continue to improve the current work plan.
It is worth noting that it is forbidden to use forced fixation during actual operation to avoid the problem of thermal expansion and contraction of the equipment that will have a certain impact on the box.
The current work plan can be gradually improved, so that the installation level can be comprehensively improved. - When connecting each box of the bucket elevator, it is necessary to accurately calibrate the center line, strictly calibrate the distance between the inclination angle and the guide rail, fix it in the air on each floor, and then use bolts to fix the equipment together.
- After the calibration is completed, pour the concrete. After drying and solidification, fix the equipment with bolts and use brackets to weld the concrete to strength. Be sure not to remove the fixing devices, so that the equipment can have strong stability.
- After completing the installation, it is necessary to complete the idling test run within one day to check the installation quality and promptly discover the deficiencies during installation. Each idling test run must be run continuously for about 8 hours.
During this period, the bucket elevator conveyor equipment is not allowed to vibrate or collide with the casing. problem, it is necessary to ensure that the operation of the entire equipment can maintain basic stability. - After debugging is completed, promptly check whether the equipment is loose or falling off.
- In addition, the device can only be delivered for use when the bearing temperature is lower than 35°C, thus providing an important foundation for the smooth operation of subsequent equipment.
Installation principles of bucket elevator conveyor
In order to comprehensively improve the installation level of bucket elevators, relevant installation personnel need to clarify the main installation principles in actual work, pay attention to detailed issues, and gradually improve the current working system, so as to ensure smooth bucket elevator installation work. Implementation provides important guarantees.
- Since every component of the head has been installed in the manufacturing workshop, the actual installation is done by adjusting the angle and direction. The oriented centerline is vertical and in the same plane.
- In addition, the motor and chain link need to be debugged first during actual installation to match each other with actual usage requirements, and gradually improve the current work plan.
- In daily use, first use lifting equipment to lift smoothly according to the overall size, and weld at the required position to achieve a good support effect.
- After installation, pay attention to whether the main shaft can rotate normally to avoid the problem of non-rotation. If it does not rotate, the rope needs to be pulled to the news of the main shaft so that it can ensure basic rotation and then be transported to the designated position. .
- After completing this operation, the motor needs to be reversed to run in the opposite direction, the bucket chain is fixed at the lower end, and the upper and lower parts are connected to each other, and the bucket chain can be used for daily use after it is started again.
Reduce the probability of safety and quality problems and gradually improve the current working model.
Use and maintenance of bucket elevator conveyor
Whether the transportation capacity of the bucket elevator conveyor can meet the expected requirements has a direct impact on the normal production and economic benefits of the enterprise.
Therefore, ensuring the safe, reliable and efficient operation of bucket elevator systems is the center of equipment management and maintenance.
01 Complete maintenance system
In order for the elevator bucket conveyor to work continuously and reliably, a complete maintenance system is very important.
- First of all, the feeding operation should be stopped before shutting down. Parking with full load is prohibited. All the coal, gravel and other materials in the jig must be taken out before the jig can be shut down.
- Secondly, during the operation of the bucket conveyor system, the chain shaft and the chain plate hole are easy to wear at the same time. The pitch of the bucket chain will gradually become longer with the wear process, and the bucket will become loose.
If not adjusted in time, the bucket chain and the stomach will become loose. There is a large degree of slippage between the two rollers, and the rollers are damaged. - Thirdly, the falling off of the chain shaft connecting the chain plate is the main cause of bucket elevator conveyor accidents. Therefore, you should always pay attention to the operation of the chain plate. If there is a chain shaft damage accident, you should stop work immediately.
- In addition, the safety pin is an important safety device that automatically cuts off the bucket elevator conveyor when it is overloaded. It is prohibited to increase the safety pin at will. At the same time, the bucket chain should be replaced in time after it is worn.
- Replacing the bucket chain is an extremely complicated task. Therefore, the entire bucket chain must be replaced at one time or segmented during maintenance to avoid bucket chains of different lengths.
- Finally, it is necessary to check the lubricating oil condition of the reducer and other components on a regular basis to ensure that they are in good lubrication condition.
02 Maintenance during use
Pay attention to safety when using the bucket elevator conveyor. If it is pressed or stuck, stop the machine immediately. very important for mixing quality.
- During the handling process, materials in the bucket should be prevented from falling or the bucket breaking off the chain and injuring people.
- When inspecting the bucket elevator, attention should be paid to cutting off the power supply. After entering the casing, ensure that there are complete communication bells and signaling equipment at the top and bottom, and ensure that there is a dedicated person responsible for safety supervision.
- When welding inside the casing, the personal safety of workers must be ensured.
- After the maintenance is completed, it is necessary to ensure that no one and tools are inside before commissioning or watering can be carried out.
03 Regularly inspect equipment and record
The operating steps of the bucket elevator conveyor are relatively complex, and it is necessary to increase the training of technical personnel to reduce the frequency of failures.
- Managers need to regularly check the working status information of the machine, discover and solve problems in a timely manner, pay attention to the deviation of the conveyor belt, overspeeding, the working status of the head motor and reduction box, the integrity of the chain and gears, and use the senses and simple tools to measure , to avoid abnormal work.
- When inspecting the equipment, you can properly use the main motor to check the wear degree of the conveyor belt plane, the tightness of the chain, the inclination of the rolling axis, etc., to avoid production safety accidents.
- The machine should not be turned on when there is material in the elevator, otherwise it will cause damage due to the load exceeding the maximum level and shorten the service life of the bucket conveyor system.
- When feeding, attention should be paid to even supply to avoid over-supply.
04 Safety protection devices and electrical equipment of bucket elevator conveyor
The bucket elevator needs to be equipped with a highly sensitive traction belt speed detection device to promptly cut off the power when the traction belt decelerates abnormally to avoid the traction belt from slipping on the head drum and causing a fire.
Bucket conveyor systems are prone to material blockage when unloading, so they need to be equipped with a material blockage detection device to avoid a large amount of material blockage or material blockage stalling. It is necessary to realize the interlocking of bucket elevator drive and conveyor drive.
The chain plate device is a safety interlock device to prevent reverse rotation. Overload thermal protection for the three-phase lines must be arranged on the starter of all motors, and a brake must be installed on the driving part.
Bucket elevator conveyors are important equipment for feed and pellet production, so it is very important to fully improve their design to reduce maintenance and avoid sparks or even explosions in the casing.
Customers should clarify the installation steps and precautions of bucket elevators, follow installation principles, improve maintenance systems, pay attention to daily maintenance, extend service life, and ensure safe production.
At the same time, you must fully understand the preventive measures and install safety protection devices and electrical equipment.
FAQs of bucket elevator conveyor
How to prevent partial failures of bucket elevator conveyors?
- When installing the bucket elevator, the size and construction quality of the equipment foundation must comply with the standards, the parallelism of the head shaft to the horizontal plane, the relative position of the upper and lower sprockets, the parallelism of the low-speed shaft of the drive device and the lifting head shaft and other key parts.
The accuracy must be installed strictly in accordance with the manufacturer’s instructions. - Measures such as material level detection and motor overload protection must be properly set up to avoid equipment damage caused by blockage and motor overload.
- Perform regular inspection and maintenance. If there is material accumulation at the bottom, clean it through the cleaning port in time. If there are abnormalities in the driving device, head and tail wheel bearings, etc., stop the machine for maintenance in time.
What causes the bucket of the bucket elevator conveyor to spread materials?
If the bucket cannot rise stably during the lifting process, it will cause material scattering, thereby increasing power consumption and reducing production efficiency.
The main reasons causing the bucket to spread materials are: vibration of the bucket, rotation of the bucket, slippage of the hopper belt, deviation of the hopper belt, etc.
(1) Vibration of the bucket
The vibration of the bucket reduces the accumulation height of the granular materials, causing the materials on the top of the bucket to scatter.
The longer the bucket vibrates, the higher the vibration frequency and the greater the vibration amplitude, the more materials will be spread. There are two causes of vibration, namely self-causes and environmental causes.
The bucket’s own vibration comes from the inertial vibration caused by the misalignment of the center of gravity of the rotating parts on the machine with the center of rotation.
When the machine’s inertial vibration frequency is the same as its natural frequency, it will cause resonance with a larger amplitude, causing the traction part to swing significantly, causing a large amount of material to be spread.
In order to avoid inertial vibration, when installing, the center of gravity of the head and bottom wheels should coincide with their centers of rotation.
In order to avoid inertial vibration, when installing, the center of gravity of the head and bottom wheels should coincide with their centers of rotation.
There are usually some vibrating equipment in the environment around the elevator, such as vibrating screens, etc., which inevitably generate vibration and transmit it to the bucket elevator conveyor, forcing it to vibrate.
The solution is to add vibration isolation devices, such as rubber pads, to the bucket elevator conveyor.
(2) Rotation of the bucket
The bucket is fixed on the traction component with one side. Under the gravity of the bucket and the material in the bucket, a moment is generated on the traction component, causing the bucket to deflect by an angle β.
- If the β angle is too large, the material will be spread directly; at the same time, the bucket will be forced to swing during the lifting process.
- If the swing is too large, the bucket may collide with the machine shell, which will not only damage the bucket, but also cause a large amount of material to be spread. materials may even cause dust explosions.
Of course, it is impossible to prevent the bucket from deflecting or swinging at all, but it is completely possible to limit the rotation angle β and swing amplitude of the bucket within a certain range.
Under normal circumstances, limiting the twist angle β of the bucket to within 2° can satisfy the condition for the bucket to rise steadily.
(3) The hopper belt is slipping
The slippage of the hopper belt causes the conveyor belt to vibrate, and the hopper twists due to its own weight, causing material to scatter. The reasons for the slippage of the hopper belt are as follows.
- ①Insufficient tension:
The bucket elevator conveyor uses the friction torque between the hopper belt and the head wheel to lift and transport materials. If the hopper belt tension is not enough, it will cause the hopper belt to slip.
At this time, the machine should be stopped immediately and the tensioning device should be adjusted to tighten the hopper belt. If the tensioning device cannot fully tighten the hopper belt, it means that the tensioning stroke of the tensioning device is too short and should be readjusted. - ②The hoist is overloaded:
When the elevator is overloaded, the resistance torque increases, causing the hopper belt to slip. At this time, the amount of material feeding should be reduced and efforts should be made to make the feeding uniform. - ③The friction coefficient is too small:
The inner surface of the head wheel and the hopper belt is too smooth, and the friction coefficient is too small, which reduces the friction between the two, causing the hopper belt to slip.
At this time, a layer of glue can be applied to the inner surface of the drive shaft and hopper belt to increase friction. - ④The bearing is not rotating properly: The head wheel and bottom wheel bearings do not rotate properly and the resistance torque increases, causing the hopper belt to slip. At this time, the bearings can be disassembled, cleaned, refueled or replaced.
(4) The hopper belt is deflected
The deviation of the tape during operation will cause the hopper to collide with the barrel, which will also cause material to scatter. The reasons for the deviation of the hopper belt are as follows.
①The head wheel and bottom wheel are not installed correctly
The incorrect installation of the head wheel and the bottom wheel is mainly reflected in the following aspects:
- The head wheel and the bottom wheel are not parallel in the horizontal direction;
- The two axes of the head wheel and the bottom wheel are not in the same vertical plane;
- The head wheel and the bottom wheel are not in the same vertical plane.
The bottom wheel is not parallel in the vertical direction. At this time, the hopper belt is deflected, which may easily cause the hopper and the barrel to be knocked away.
At this time, the bucket elevator conveyor machine should be stopped immediately and reinstalled and adjusted to ensure the installation accuracy of the head wheel and bottom wheel.
②The hopper belt joint is incorrect
The incorrect hopper belt joint means that after the hopper belts are combined, the edge lines of the hopper belts are not in the same straight line. As a result, the lengths of both ends of the bucket elevator conveyor belt are unequal.
In this way, the tightness and tension of the two ends of the conveyor belt are different, and the belt moves sideways toward the tighter end, resulting in material spreading, insufficient hopper filling, incomplete unloading, etc., which reduces productivity.
If it drops, in severe cases, the hopper belt may be jammed or torn. At this time, the machine should be stopped, and the joints should be re-corrected and connected to ensure that the edge lines of the hopper belt are in the same straight line.
What are the reasons for material backflow?
Material return refers to the phenomenon that all the materials thrown out from the hopper cannot enter the discharge pipe and part of them returns to the machine base.
If the bucket elevator conveyor returns too much material, it will inevitably reduce production efficiency, increase power consumption and material crushing rate.
Reasons for recycling:
- The main reason is that the hopper cannot completely discharge when it reaches the transition point between the curve section and the straight section (discharging limit position), and part of the discharge occurs in the linear descent stage, which requires the hopper to be modified;
- Another reason is that the thrown material flow cannot fall into the discharge pipe correctly and hits the hood wall causing flying. This is related to the lifting speed, discharge port structure and parameters, elevator bucket structure size, hopper structure is related to size, etc.
（The inspection method is: put your ear against the barrel of the phone and check whether there is a sound like rain in the earpiece. Judge the degree of backflow based on the size and density of the sound.
Then, open the bucket elevator conveyor machine head cover and observe the movement trajectory of the material after the material is spilled during operation to analyze the cause of the backflow.）
For the second type of backflow, it is necessary to find out the cause and then deal with it accordingly：
- Running speed is too fast
If it is found that some materials are thrown very high and fall but cannot reach the discharge nozzle, it means that the hopper is thrown too early. The solution is to reduce the speed of the belt. When conveying granular materials with good fluidity, centrifugal discharge is generally selected.
The speed is usually 1.5~3.0 m/s. To transport materials with high moisture content, viscosity and poor fluidity or small lump materials, gravity discharge can be selected.
The speed of the bucket is 0.6~1.0 m/s. To transport granular materials such as rice, rice, and wheat, the bucket movement speed is generally 1~2 m/s.
- The size of the machine head shell is too small
If the material is thrown high and far and has crossed the entrance of the discharge pipe, it means that the geometric size of the bucket elevator conveyor machine head shell is too small. The solution is to appropriately enlarge the size of the machine head shell.
- Unloading ends too late
If it is found that some materials fall very close to each other after being thrown out, and cannot enter the discharge pipe, or even pour into the unloaded branch machine barrel, this means that the discharge of the hopper ends too late.
The solution is to modify the shape of the hopper, that is, to increase the bottom of the hopper. corner or reduce hopper depth.
- The distance between hoppers is too small
If it is found that part of the material is thrown out and hits the bottom of the front hopper and hits the casing to form a backflow, it means that the distance between the hoppers is too small, and the distance between the hoppers can be appropriately increased.
- The hopper is too high
If it is found that the tail of the hopper is tilted when it is in the rear semicircle of the head wheel, which changes the trajectory of the material after being thrown out, forming a backflow, this means that the overall height of the hopper is too large, and the height of the hopper can be appropriately reduced to solve the problem.
Can the existing bucket elevator conveyor be improved later?
(1) Adopt adjustable feed hopper guide plate
In order to improve the filling factor of the bucket elevator and enable the lifted materials to enter the bucket smoothly, an adjustable feed hopper guide plate is used for improvement.
The adjustable feed hopper guide plate consists of a feed hopper, a hinge, an adjustable guide plate, an adjusting screw, a fixing nut, a bucket, a bucket belt, etc., and is installed at the discharge port of the feed hopper.
(2) Use high-efficiency hopper
Through analysis, it is known that the material in the hopper slides along the logarithmic spiral, and the sliding coefficient is smaller than the internal friction coefficient of the material, so the material in the hopper slides along the hopper wall more easily.
In the early stage of unloading, the sliding of materials occurs inside the materials, which is the sliding between materials. But in the later stage of unloading, the material outside the spiral slides ahead of time along the front wall of the hopper. (Find RICHI on YouTube)
In which industries can bucket elevator conveyors be used?
Bucket conveyors are used in a wide range of applications, including the following industries:
- Food industry: In the food industry, bucket elevators are mainly used to transport bulk materials such as grains, peanuts, soybeans, etc., and are widely used in flour processing, feed processing, dairy processing and other fields.
- Building materials industry: In the transportation of cement, limestone, gypsum and other materials, bucket elevator is the most common and effective transportation equipment.
They can transport raw materials from storage tanks or loading equipment to various work stations, while also transporting finished products to warehouses or packaging areas. - Chemical industry: In the chemical industry, bucket elevators are mainly used to transport granular materials, such as alumina, potassium sulfate, potassium dihydrogen phosphate, calcium carbonate, etc. It can also be used to transport liquid materials.
- Metallurgical industry: In the metallurgical industry, bucket elevators are usually used to transport materials, such as iron ore, coke, lime, etc., in processes such as ironmaking, steelmaking, and casting.
- Mining industry: In the mining industry, bucket elevators are usually used to transport bulk materials such as ore and coal from the wellhead to the ground or to other process equipment.
In short, the bucket elevator conveyor is an efficient, stable and reliable vertical conveying equipment that is widely used and plays an important role in the production and development of many industries.