bird feed machine

Crushing is an operation method that uses mechanical methods to overcome the cohesion of solid materials to break them. It is one of the most important processes in the bird feed machine system and is an important factor affecting feed quality, output, power consumption and processing costs.

The function of bird feed grinder:

• a. Increasing the surface area and particle size of feed is beneficial to the digestion and absorption of animals.
  Animal nutrition tests have proven that reducing particle size improves the digestion and absorption of dry matter protein and energy, and reduces the feed-to-meat ratio;
• b. Improve and enhance the processing performance of bird feed.
  Through crushing, the particle size of the material can be basically consistent, and the material classification after uniform mixing can be reduced; for trace elements and some small component materials, only when they are crushed to a certain extent to ensure that they have sufficient particle numbers, can the mixing uniformity requirements be met;
• c.The pulverized feed particle size can significantly improve the feed conversion rate, reduce the amount of animal feces excretion, improve the animal’s utilization of bird feed, and improve the efficiency and quality of subsequent bird feed mixing, conditioning, granulation, puffing and other processing.
  The power equipment of the crusher generally accounts for about 1/3 of the total power equipment of the bird feed factory. How to reasonably select advanced crushing equipment, design the best process route, and use the crushing equipment correctly is crucial for bird feed production companies.

Choose a feed grinder for bird feed machine system:

Purchasing a centrifugal fan for a crusher can get twice the result with half the effort to improve crushing efficiency. After the material passes through the friction between the hammer and the screen, it should be discharged from the crushing cavity immediately to avoid clogging the machine, causing the temperature in the crushing cavity to rise, or even causing a dust explosion.

How is the crushed material quickly discharged from the crushing chamber? After the centrifugal fan is started, a continuous negative pressure environment will be formed in the crushing chamber and settling chamber. Qualified materials will quickly pass through the screen under the action of negative pressure to complete the crushing of the materials.

The centrifugal fan can absorb the moisture of the finished product, reduce the humidity in the finished product, facilitate storage, increase the crushing efficiency by 10% to 15%, and reduce the dust in the crushing chamber. Therefore, choosing a centrifugal fan with suitable wind pressure is very important to improve the crushing efficiency. .

There are many types of bird feed mixer machines on the market and can be used in bird feed machine system: in terms of shape, they are divided into horizontal bird feed mixers, and drum feed mixers. From the perspective of mixing raw materials: there are dry powder feed mixers, vitamin feed mixers, bird feed mixers that can add liquid, etc.

So which feed mixer is suitable for you? Specific reference can be made from the following points:

(1) Choose the feed mixer that suits you according to your output

Each bird feed mixer machine has its own hourly output, and the hourly output will vary depending on the model. For example, a vertical feed mixer takes about 15 minutes to mix a batch of materials.

If the hourly output of this model is 500kg/h, then it will take more than 2 hours to mix 5 tons of feed. Of course, this refers to the time of simply mixing feed. If it is a pellet unit, then the time for crushing and granulating needs to be added.

(2) Choose the feed mixer that suits you according to the bird feed raw materials you need to mix.

As mentioned before, there are different types of bird feed mixers based on different raw materials. Generally speaking, vertical feed mixers and horizontal ribbon mixers are used to mix dry powders.

Because it uses twisted blades inside, even if it is thickened, it still has a certain resistance to the liquid mixture. If there is resistance, it may cause hinge wear. Twin-shaft paddle feed mixers can be used to mix and add liquid mixtures. Therefore, according to different raw materials, you can choose a suitable feed mixer.

(3) Choose a bird feed mixer that suits you according to the required mixing coefficient

Generally, the mixing uniformity of vertical bird feed mixers and horizontal ribbon mixers is sufficient for small and medium-sized farms. But if the requirements for bird feed are relatively high or it is a bird feed machine plant, then the requirements for the mixing uniformity of the feed will also be relatively high.

The mixing uniformity of the twin-shaft paddle bird feed mixer machine is also relatively high, but at the same time, its cost will be higher.

After the mixed powdered feed is granulated, the nutrition and eating quality of the bird feed can be improved to varying degrees. Due to the different varieties and components of bird feed raw materials and the different scales of finished products, there are also different requirements for the performance and structural parameters of the bird feed pelleting equipment.

There are two types of bird feed pellet mills used in bird feed mills: ring dies and flat dies. The flat die is more suitable for pelleting roughage, so only the ring die bird feed pelletizer is explained.

Since the working principles of ring die bird feed granulators are basically the same, the evaluation of their performance when selecting models is mainly based on the rationality of structural design, ease of operation, selection of structural parameters, processing methods, manufacturing level, parts selection, purchase channels and control functions and other aspects should be considered comprehensively. (Find RICHI on YouTube)

Cooling is to maintain better storage performance of the product after granulation, and is an indispensable procedure after bird feed granulation. For a long time, cross-flow cooling has been used for cooling after bird feed granulation. Although it can meet the usage requirements and the cooling granule temperature is less than 7°C, it is easy to fail to meet the standard if you are not careful during operation.

Therefore, the counterflow cooler that has appeared recently is a model with a more reasonable cooling principle. Because the convection heat exchange system is the most complete and reasonable, the cooling effect is 3°C lower than room temperature, and the cooling effect is extremely ideal.

When selecting this bird feed machine, since the models produced by each bird feed mill factory are similar, you should pay attention to the manufacturing quality, materials and accessories, such as: how effective is the automatic control of the incoming and outgoing material linkage mechanism, and whether the main part is made of stainless steel.

In addition, for output selection, not only large-sized models can be used, but also two machines can be superimposed to increase output.

The selection and use of fans and separators has a great effect. The air suction duct should be made of stainless steel sheets, otherwise the service life will be greatly affected by the presence of water vapor, so attention should be paid to it, otherwise it is impossible to obtain the most ideal use effect.

Crushed grains can save energy consumption and improve the digestion and absorption rate of birds.

At present, almost all bird feed pellet machines use roller-type bird feed granulators, and their performance is mainly evaluated by the structural rationality, structural parameters, process parameters, and processing level of the machine. The large roller diameter and high pressure make it easy to break.

There are two types of pressure roller tooth shapes:

• One type is crossed helical teeth, and it is better to have front-to-front teeth. The number of teeth should not be too many, which will reduce the powder extraction rate;
• The second type is a combination of straight teeth and helical teeth. This combination The disposal rate is also low, but these two types of tooth arrangement can meet the usage requirements, and the powder extraction rate should be controlled within 3%.

However, from the perspective of actual use, it is very important to adjust the distance between the two rollers. Otherwise, if the distance between the two rollers is unequal, the product will be uneven.

A scale can be provided at the adjustment handwheel to facilitate operation. In addition, when selecting the model, attention must be paid to the inlet size of the bird feed pellet making machine, which must completely match the outlet of the cooler, otherwise the powder extraction rate will be increased.

The crumbled bird feed pellets are classified and the powder part is removed to ensure that the feed has pure small particles and achieve the best feeding effect.

The existing classification screens mainly include vibrating classification screens and rotary vibrating screens, both of which can achieve better results. The vibration grading screen should adjust the amplitude of the screen body according to the properties and flow rate of the material to achieve the best effect.

Due to the long distance between the screen surfaces, the vibrating screen has better classification effect and is also one of the commonly used bird feed machine. In short, both types of machines can meet the usage requirements, and the grading efficiency can reach over 98% to 99%.

In the individually customized bird pellet feed process, some customers will specifically add a post-curing process. Aging is a process set up to increase the gelatinization degree of the feed and improve the water resistance of the pellet feed. It can also improve the pelleting performance and eating quality. The aging process is still in its infancy.

At present, the post-curing process uses a curing stabilizer with a steam addition system and a jacket insulation device to maintain the material temperature at 80°C to 90°C.

The bird pellets can be kept in the bird feed machine for 20 to 40 minutes (adjustable), so that the temperature in the pellets can be maintained. Starch is gelatinized or can form a network structure, which can meet the requirement of water resistance of more than 6 minutes.

The working principle of the extrusion expander is very similar to that of the bird food extruder.

The main structural parameters and process parameters are quite different, such as:

• The screw compression ratio, 1.05~1.2:1;
• The extrusion chamber is stable at 120℃~130℃;
• The extrusion chamber work pressure is 9.8×10-5～4.9×10-6Pa;
• The destruction rate of harmful factors is above 80% to 90%;
• The gelatinization degree of the starch part is 85% to 90%.

In addition, whether the material of the screw and sleeve is alloy steel, whether the processing methods are reasonable and advanced, and what the performance is after heat treatment. These parameters are directly related to the use effect and cannot be ignored and must be understood.

Through the above detailed introduction to the necessary bird feed machine for bird feed production, we can find that for bird feed manufacturers, choosing appropriate bird feed equipment requires not only paying attention to its actual efficacy, but also needing to coordinate various conditions well.

Only in this way can the quality of bird feed production be continuously improved and the development of the bird feed processing industry be promoted.