Selection of pelletizing equipment

The mixed powdery feed is granulated, which improves the nutrition and quality of the feed Granulation is not only suitable for animal feed, but also suitable for aquatic products and special feed Due to the variety and composition of feed materials and different scale of finished products, there are different requirements for the performance and structural parameters of pelletizing equipment Generally, granulation process is equipped with granulation, cooling, granulation and grading equipment, and some are equipped with grease spraying system The selection principles of the above equipment are as follows: 1 There are two types of pelletizer used in pelletizer feed factory: ring mold and flat mold The flat die is more suitable for pelletizing of coarse feed, so only the ring die pelletizer is explained Because the working principle of the ring mold granulator is basically the same, the evaluation of its performance is mainly considered from the rationality of the structural design, the degree of operation convenience, the selection of the structural parameters, the processing means, the manufacturing level, the selection of parts and components, the purchase channel and the control function 2 Cooler cooling is to keep better storage performance of products after pelletizing, which is an indispensable procedure after pelletizing For a long time, cross flow cooling has been adopted after pelletizing Although it meets the use requirements, the temperature of cooling particles is less than 7 ℃, but it can not reach the standard if it is operated carelessly Therefore, the counter flow cooler is a more reasonable type of cooling principle, because the convection heat exchange system Zui is perfect and reasonable As soon as the machine appeared, it was popularized rapidly The cooling effect of the machine can be lower than 3 ℃ at room temperature, and the cooling effect is very ideal For the model selection of the machine, due to the same models produced by different factories, attention should be paid to the manufacturing quality, materials and accessories, such as: how about the automatic control effect of the linkage mechanism of the incoming and outgoing materials, and whether the main part is made of stainless steel In addition, the output selection can not only use large-scale models, but also increase the output after the superposition of two machines The selection of fans and separators has a great relationship with the use effect The air suction pipe should be made of stainless steel sheet, otherwise, the service life will be greatly affected in case of water vapor, so attention should be paid to it, otherwise, it is impossible to obtain the ideal use effect of Zui 3 The granulator can save power consumption and improve the digestion and absorption rate of livestock and poultry At present, almost all of the crushers are roller crushers, whose performance is mainly evaluated by the structure rationality, structure parameters, process parameters and processing level of the machine Big roll diameter, big pressure, easy to break There are two types of roller teeth, one is cross bevel teeth, and the front is suitable for the front, and the number of teeth should not be too many, which reduces the powder yield; the second is the combination of straight teeth and bevel teeth, which also has less powder yield, but the two types of tooth arrangement can meet the use requirements, and the powder yield should be controlled within 3% However, it is very important to adjust the distance between the two rollers for practical use Otherwise, when the distance between the two rollers is not equal, the product is not even, and a gauge can be set at the adjusting handwheel for easy operation In addition, attention must be paid to the inlet size of the crusher when selecting the model, which shall be completely consistent with the outlet of the cooler, otherwise the powder output rate will be increased In order to ensure that the material has pure small particles and the feeding effect reaches Zui The existing classification screen mainly includes vibrating classification screen and rotary vibrating screen, both of which can achieve better results The vibration grading screen should adjust the amplitude of the screen body according to the nature and flow of the material, so as to achieve the best effect of Zui Because of the long distance between the screen surface, the rotary vibrating screen has a good classification effect and is also one of the commonly used equipment The former is widely used in Switzerland, Italy and Germany The latter is widely used in the United States and the United Kingdom In a word, these two types of machines can meet the use requirements, and the classification efficiency can reach more than 98% - 99%.