Compression chamber compone produced by particles and on-site control

LIMA Fish Feed Machine,Chicken Feed Machine

Abstract: In the process of processing of particulate feed, there are many factors affecting the quality of the particles, in which the component selection and production site operation of the granulator press chamber is not overlooked. Ring, pressure roller, feeding blade, cutter, and steam regulating temperatures affect granulation efficiency and effects, the system masters the selection standards and operational standards of th parts are the basis for the processing of particle feed and enhance product quality. Key words: granulation process; ring mold; feeding blade; cutter; steam regulating temperament during processing of particle feed, there are many factors affecting the quality of granules. In addition to the quality standards similar to powder feed, the particulate feed is also required for color, particle size, length, surface finish, hardness, powder content, powder, and so on. Through the rarch and analysis of the particle durability (PDI) index, people found that the formula decided to determine 40% (raw material composition and ratio), and the granulation was determined to determine 20%. % (Formula composition and conditioning length determine the teta-striped effect), the mold hole parameters determine 15% (product and formula determining the mold), cooling determines 5% (the aperture and formulation determines the cooling time). In addition to the above factors, the processing process affecting the mass of the particulate feed also includes the puffing and expansion process of the raw material, the mixing of the feedstock, the water, the fuel injection process, the steam pre-regulating process, the next maturation, and the post-spray process. This paper focuses on the influence of granulator compartment compone and on-site operation on particulate production from the perspective of production site regulation. 1 ring mold on the granulation effect affects the effect of the granulation on the granulation effect, mainly manifested in the effective length of the mold hole, the size of the aperture, the roughness of the mold hole, the mold pitch, the mold hole shape, etc. 1.1 The depth of the mold hole and the aperture ratio of the mold hole are the length of the release hole to a constant thickness, and the size of its aperture is formed. The aperture ratio is small, the material is shorted in the mold hole, easy to extrusion, large production efficiency, low power consumption, but produced particles are loose, easy to cause high powder, particle length is not neatly equal; Conversely, the larger the aperture ratio, the longer the material extruded in the mold hole, the production efficiency is low, and the power consumption also increases, and the particle hardness is high. As the effective holes of the mold hole, the granulation production has decreased, and even generates a blocking mode. In order to achieve the best granulation performance, the production and quality can achieve the best state, and the appropriate ring-compression ratio is very important. Each formulation will have a suitable compression ratio range. When determining the compression ratio, the recipe raw material composition, pulverization fineness, and the raw material characteristics are reasonably selected. If the ring mold aperture ratio does not apply to the formulation granulation requireme, moderately adjust the formulation and raw material ratio is more practical, to achieve the best granulation efficiency, the formula must be harmonious Unite. 1.2 The lower the roughness of the roughness of the mold hole (i.e., the higher the finish is higher), the frictional force of the material is small, easy to extrusion, high production efficiency, and the surface of the particles is smooth, not easy to crack , GranularGood quantity. It is therefore recommended to give priority to the use of stainless steel ring molds. 1.3 The spacing of the spacing of the mold is related to the nature of the suppressed feed, such as the feed of small worn wear, a loop-proof ring-wide ring mold; a feed of high wear resistance, such as a high-moine feed and high fiber The feed can be used in a larger ring-made ahead, which improves the productivity of granulation efficiency and ring mode. 1.4 The shape of the shape of the mold hole mainly has an inner cone hole, an outer cone hole, a stepped hole, a straight hole, and an outer cone. The inner cone hole facilitates the material into the material, the compressive force is strong, the particle hardness is high, the powder is low, but the production efficiency is not high, and the life of the ring mode is short. The outer cone hole is conducive to the material through, but it is not conducive to the material into the mold hole, the pressed particles are loose, and the powder is high. Direct holes and stepped holes, moderate performance, high production efficiency and particle formation rate, so applications are most common. The outer cone step hole mold, in the application of livestock and poultry materials, can play a good effect, solve the problem of surface-containing powder containing the particles and loose texture in the late use, so that the ring mold is During the entire production process, the output of the particles is uniform and the power consumption is low. 2 Module gap affects granulation efficiency 2.1 When the gap is too large, the compression zone layer of the granulation will thicken, so that the pressure of the pressure zone is increased, the main motor current is increased, and the pressure roller is operated. The resistance increases, generates a pressure roller slip and granulator vibration phenomenon, and the granulation production is lowered, and someti it will not produce. 2.2 Gap Excessive Mold Roller Gap Over Hours, the mold roll direct contact, generates mechanical wear, severely affecting the service life, deforming the mechanical wear of the pressure roll shell, making the mold hole feeding, granulation production Gradually decline, and finally lead to difficulty in granulation, and even discontinued. 2.3 Normal molding roller gap should be adjusted to the artificial rotation ring mold, with a 1/4 working surface can be operated by the roll shell, or to drive, such a gap can meet the granulation requireme. [NEXTPAGE] 3 Feeding Scraper on Granulation 3.1 Feeding Scraper As the extension of the use time gradually beco small, this wear is very easy to be ignored, often when the granulation capacity can be reduced, or When the surface of the ring mold is abnormal, the wear of the feeding doctor blade is imenovable when the life is lowered. 3.2 Feed scraper also causes collisions and other reasons when the plugging and other reasons are removed during production, and will change their orientation, which will also cause the annular molding surface to feed unevenness, resulting in production, ring Mold life decreases. The correct approach is to regularly check the granulator’s lifting parts, including feeding scrapers. 3.3 Feeding scraper wear or angle ineffective impact on granulation: The pressure zone of the ring mold and the pressure roller is not uniform, and finally the annular dielectric surface is not uniform (high and low], so that the die roller is between If the gap is inconsistent, the natural material layer is also uniform. The local material of the clearance is thin. The guide port of the mold hole is easily deformable, making the feeding difficulty; the gap is large, although the feeding is normal, but because the material layer is too thick, the pressure roller is reduced.The extrusion is difficult to discharge, and the host current rises, which also reduces production capacity. At the same time, due to the unevenness of the annular molding surface, it is not consistent with the inconsistency of the mold hole (there is a small), and the thickness of the particles is very different. 4 Feeds The amount of impact on granulation is a rated current value. The increase in the amount of feed is increased, and the production capacity is also high. It should be based on the moisture, formulation properties, and temperament effects of raw materials. And the size of the particle diameter, regulate the amount of feed, and strive to achieve the best results. It should be noted that the rated current value cannot be exceeded when the main motor current is adjusted. 5 The cutter of the cutter affects the quality of the particulate machine is not covered, and the column material from the ring mold is interrupted, rather than being cut, so the two ends of the particles are relatively rough, and the particles become an arc shape. Resulting in an increase in the content of the finished product content and reduces the quality of the particles. The adjustment of the cutter mainly affects the length of the particles, and the length of the particles is generally 1.5 to 2.5 ti the material, and it can be appropriately adjusted according to the needs of the user. The difference between adjusting the length of the particles is to adjust the distance between the cutter and the ring mold. When the cutter exits, the distance between the knife port and the ring mold beco large, the particles become long, in turn, the particles are shortened. It should be noted that the distance between the cutter and the ring mold is minimal. Otherwise, the cutter head collides with an accident. Taking a water product special cutter as an example: a water product special cutter is an ultra-thin blade, which is generally thick at 0.4 to 0.8.8. When adjusting the knife, the knife mouth should be tightened, the particle length rely on the amount of feeding, feeding Increase the amount of particles as long as the amount of particles, and the amount of feed is shortened. This cutter is only suitable for particulate materials below 4.5 ©L. 6 Steam The role of the granulation uses steam to heat the feed, allowing the material to heat the material, starch, protein and sugar, and also increase the moisture of the feed, due to moisture, can function as a binder when moisture The role, but not only the granulation quality can be improved, but also make the mold hole to lubricate, reduce the friction of the mold on the feed, thereby improving granulation production. 6.1 Vapor quality The control of the induced control on particle mass and granulation efficiency Steam must have suitable pressure, temperature and moisture. The steam pressure is controlled by the pressure reducing valve, and the pressure reducing valve is very important in the steam line, and the performance must be reliable. The outlet pressure fluctuates small. The steam filter is installed in front of the pressure reducing valve (built-in 40 to 200 h) to ensure that the pressure reducing valve is not blocked by suspenders and impurities in steam. The steam pressure should be guaranteed at 0.2 to 0.4 MPa, and is a dry saturated steam without condensate, temperature at 130 ~ 150 ¡ã C; the steam pressure is maintained at 0.1 to 0.2 MPa when producing small particulate aquatic product, and the temperature is at 115 to 130 ¡ã C. The most suitable operation, more improves the quality of the particles; the larger the pressure of the steam, the higher the temperature, the temperature of the material is generally 65 ~ 85 ¡ã C, some feed (such as aquatic product) need to reach 90 ¡ã C or more to meet the granulation Require. As the temperature increases, the humidity is also improved accordingly, the water is most suitable for granulation 15.5%.The amount of steam is adjusted according to the configuration of the formulation of various feeds, and the configuration of the molding holes. If the amount of vapor is too large, the particle deformation, the temperature is too high, the nutrie such as the additive, and even generate coking phenomena during extrusion, affecting the quality of the particles. 6.2 During the production of steam dosage, the amount of steam is changed, and the amount of steam should also be changed accordingly. The amount of the plug-in steam is used as 4% to 6% of the granulator production capacity. For example, some formula raw material water is 13%, granulation humidity is 15.5%, and water should be added to 2.5%. The temperature will increase by 1% by weight, the temperature will increase by 11 ¡ã C, and the room temperature is 30 ¡ã C, The temperature was 2.5 ¡Á 11 ¡ã C + 35 ¡ã C u003d 62.5 ¡ã C. In addition, a recipe raw material moisture is 10%, the room temperature is 30 ¡ã C, then the feed temperature after the injection is 5.5 ¡Á 11 ¡ã C + 35 ¡ã C u003d 95.5 ¡ã C, this estimation method is only used for room temperature (20 ~ 30 ¡ã C) Ordinary livestock and aquatic products. 7 Abnormal particles generation and treatment due to the unsuitability of raw materials, formulations, processing processes and injective vapor dosage and pressure during conditioning, often pressing abnormal particles (Table 1).

The operation of the small knot production site and the pressure chamber component selection have a very large impact on granulation production performance and product quality. When the formulation design and use raw materials, the actual situation of the granulation production process should be fully considered. To the harmonious and unity of formulations, raw materials, process and equipment to maximize quality requireme and enhance production efficiency and reduce production costs.

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