Selection of equipment for pelleting livestock and poultry f
Posted by Animall Feed Blok Making Machine | updatetime 2020-07-13 13:00
Selection of equipment for pelleting livestock and poultry feed
After mixing, the powderd feeed can be granulated to improve and improve the nutrition and edible quality of the feed. Granulation is not only suitable for livestock and poultry feed, but also suitable for aquatic products and special feed. Due to the different types and commponents of feed materials and the scale of finishedproducts, there are also different requirements on the performance and structual parameters of granulation equipment. The granulation process is generally equipped with granulation. cooling, crushing and grading equipment, and some are also equipped with grease painting systems. The selection principles of the above equipments are as follows:
1.Granulator
There are two types of pelletizers used in feed mills: ring die and flat die. The flat mold is more suitable for granulation of roughage, so only the ring mold granulation will be explained. Because the working priciple of the ring mold granulator is basically the same, the evaluation of its performance when selecting the model mainly depeeds on the rationality of the strctural design, the ease of operation, the selection of the structural parameters, the processing methods, the manufacturing level, the selection of parts, the purchase channels and control functions and other aspects should be considered comprehensively.
2. Cooler
Cooling is to maintain good storage performance after granulation, and is an indispensable procedure after granulation. For a long time, cross-flow cooling is used for cooling after granulation. Although the temperature can be met and the temperature of the cooling granules is less than 70C, it is easy to fail to reach the standard if you are not careful during operation. Therefore, the recent counter-flow cooler is a model with a more reasonable cooling principle, because the convection heat exchange system is the most complete and reasonable. The machine was quickly promoted as soon as it appeared. The cooling effect of the machine can be lower than room temperature by 30C. The cooling effect is extremely ideal. The selection of this machine is due to the similarity of the models produced by each factory, so it is necessary to pay attention to the manufacturing quality, materials and accessories, such as: the automatic control effect of the feeding and discharging linkage mechanism, and whether the main part is made of stainless steel. In addition, the output selection can not only use largr-size models, but also increase the output after stecking two machines, which has great effect on the selection and use o fans and separators. The suction pipe should be made of stainless steel sheer, otherwise the service life will be greatly affected under the condition of water vapor, which should be paid attention to, otherwise it will not be possible to obtain the most ideal use effect.
3. Granulator
Crushed grains can save power consumption and improve the digestion and absorption rate of livestock and poultry. At present, almost all crushers use roller crushers, and their performance is mainly evaluated by the rationality of the machine's structure, structural parameters, process parameters, and processing level. The roller diameter is large and the pressure is large, which is easy to break. There are two types of roller profile, one is crossed helical teeth, and it is appropriate to use front-to-front, the number of teeth should not be too much, which reduces the powder extraction rate; the second types is the combination of straight teeth and helical teeth, this combination the punishment rate is also less, but these two types of tooth arrangement can meet the use requipments, and the powder extraction rate should be controlled within 3%. However, starting from actual use, it is very improtant to adjust the distance between the two rollers. Otherwise, if the distance between the two rollers is unequal, the product will be uneven, and a dial gauge can be provided at the adjustment handwheel for easy operation. In addition, you must pay attention to the size of the model, which must be completely consistent with the outlet of the cooler, otherwise the powder output rate will be increase.
4. Classification screen
After crushing the material, the powder is removed after classification to ensure that the material has pure small particles, so that the feeding effect is optimal. Existing grading screens mainly include vibrating screens, both of which can achieve better results. Vibration classification screen should adjust the amplitude of the screen body according to the nature and flow of the material to achieve th best effect. The rotary vibrating screen has a long sieve surface distance, and it is also one of the commonly used equipment. In short, both types of models can meet the requipments of use, and the classification efficiency can reach 98% to 99%.
5. Aging
Mature is a process set up to improve the gelatinization degree of feed and improve the water resistance of pellet feed. It can also improve the granulation performance and edible 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 keep the temperature of the material at 80C to 90C, and the particles can be kept in the machine for 20 to 40 minutes (adjustable), so that the starch paste in the particles it can be meet the requirements of water resistance of more that 6min.
6. Extruder (expansion) puffing machine
The working principle of the extruder and the extruder is very similar, mainly due to the large difference in structural parameters and process parameters, such as the screw compression ratio, 1.05~1.2:1, the stability in the extrusion chamber is 120C-130C, and the working pressure in the extrusion chamber is 9.8*10-5~4.9*10-6Pa. The destruction rate of harmful factors is above 80%~90%, and the gelatinization degree of starch part is 85%~90%. Inaddition, whether the material of the screw and the screw sleeve is alloy steel, whether the processing method is reasonable and treatment. These parameters have a direct relationship with the use effect, and they cannot be ignored and must be understood.
1.Granulator
There are two types of pelletizers used in feed mills: ring die and flat die. The flat mold is more suitable for granulation of roughage, so only the ring mold granulation will be explained. Because the working priciple of the ring mold granulator is basically the same, the evaluation of its performance when selecting the model mainly depeeds on the rationality of the strctural design, the ease of operation, the selection of the structural parameters, the processing methods, the manufacturing level, the selection of parts, the purchase channels and control functions and other aspects should be considered comprehensively.
2. Cooler
Cooling is to maintain good storage performance after granulation, and is an indispensable procedure after granulation. For a long time, cross-flow cooling is used for cooling after granulation. Although the temperature can be met and the temperature of the cooling granules is less than 70C, it is easy to fail to reach the standard if you are not careful during operation. Therefore, the recent counter-flow cooler is a model with a more reasonable cooling principle, because the convection heat exchange system is the most complete and reasonable. The machine was quickly promoted as soon as it appeared. The cooling effect of the machine can be lower than room temperature by 30C. The cooling effect is extremely ideal. The selection of this machine is due to the similarity of the models produced by each factory, so it is necessary to pay attention to the manufacturing quality, materials and accessories, such as: the automatic control effect of the feeding and discharging linkage mechanism, and whether the main part is made of stainless steel. In addition, the output selection can not only use largr-size models, but also increase the output after stecking two machines, which has great effect on the selection and use o fans and separators. The suction pipe should be made of stainless steel sheer, otherwise the service life will be greatly affected under the condition of water vapor, which should be paid attention to, otherwise it will not be possible to obtain the most ideal use effect.
3. Granulator
Crushed grains can save power consumption and improve the digestion and absorption rate of livestock and poultry. At present, almost all crushers use roller crushers, and their performance is mainly evaluated by the rationality of the machine's structure, structural parameters, process parameters, and processing level. The roller diameter is large and the pressure is large, which is easy to break. There are two types of roller profile, one is crossed helical teeth, and it is appropriate to use front-to-front, the number of teeth should not be too much, which reduces the powder extraction rate; the second types is the combination of straight teeth and helical teeth, this combination the punishment rate is also less, but these two types of tooth arrangement can meet the use requipments, and the powder extraction rate should be controlled within 3%. However, starting from actual use, it is very improtant to adjust the distance between the two rollers. Otherwise, if the distance between the two rollers is unequal, the product will be uneven, and a dial gauge can be provided at the adjustment handwheel for easy operation. In addition, you must pay attention to the size of the model, which must be completely consistent with the outlet of the cooler, otherwise the powder output rate will be increase.
4. Classification screen
After crushing the material, the powder is removed after classification to ensure that the material has pure small particles, so that the feeding effect is optimal. Existing grading screens mainly include vibrating screens, both of which can achieve better results. Vibration classification screen should adjust the amplitude of the screen body according to the nature and flow of the material to achieve th best effect. The rotary vibrating screen has a long sieve surface distance, and it is also one of the commonly used equipment. In short, both types of models can meet the requipments of use, and the classification efficiency can reach 98% to 99%.
5. Aging
Mature is a process set up to improve the gelatinization degree of feed and improve the water resistance of pellet feed. It can also improve the granulation performance and edible 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 keep the temperature of the material at 80C to 90C, and the particles can be kept in the machine for 20 to 40 minutes (adjustable), so that the starch paste in the particles it can be meet the requirements of water resistance of more that 6min.
6. Extruder (expansion) puffing machine
The working principle of the extruder and the extruder is very similar, mainly due to the large difference in structural parameters and process parameters, such as the screw compression ratio, 1.05~1.2:1, the stability in the extrusion chamber is 120C-130C, and the working pressure in the extrusion chamber is 9.8*10-5~4.9*10-6Pa. The destruction rate of harmful factors is above 80%~90%, and the gelatinization degree of starch part is 85%~90%. Inaddition, whether the material of the screw and the screw sleeve is alloy steel, whether the processing method is reasonable and treatment. These parameters have a direct relationship with the use effect, and they cannot be ignored and must be understood.
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