LIMA Fish Feed Machine,Chicken Feed Machine
With the booming of modern aquaculture and feed industry, the quality requirements for feed are increasing, and the particle length is a very important quality assessment indicator for particulate feed, the length is compliant. Requirements, neatly and consistent pellets are not only the need to meet the sales of feed manufacturers, but also the needs of users actually cultured, and the particle feed is too long, too short or uneven is not conducive to animal food. In actual production, the particle length of the granulation machine generally requires 2 to 3 times the particle diameter, such as a particulate material having a diameter of §æ3mm size, which is generally 6 to 9 mm, of course, according to the actual user needs and different Feed varieties, its length requirements are not necessarily within this range. Therefore, in order to produce the length of the feed particles that meet the requirements or to be close to the required feed particles, it is discussed some factors that affect the length of the granulator, and the corresponding control method is found, which makes it conducive to the production needs, for the feed manufacturer. It is very important to say. The author will discuss this issue from the following aspects based on years of granulator design experience and on-site debugging experience. 8RY China Feed Industry Information Network – Based on Feed, Service Animal Husbandry
8RY China Feed Industry Information Network – Bit Feed Serving animal husbandry The yield of the granules is Q (kg / h), the ring-mold inner diameter is D (mm), the root mode effective width is W (mm), and the ring mode speed is V (m / s), the ring model rotation is N (r / min), the ring-mold hole diameter is D (mm), the ring mold opening ratio is PSI; the number of openings is n (one), the resulting particles are The length of the unstoppable length is L (mm), the particle density is rho; (kg / m3), the length of the particles that do not cut is:
8RY China Feed Industry Information Network – Bit Feed, Service Animal husbandry
For the above formula, it is not difficult to analyze the factors affecting the length of granulator particles: 8RY China feed industry information network – based on feed, service animal husbandry
8RY China Feed Industry Information Network – Based on Feed, Serving Animal Husbandry
8RY China Feed Industry Information Network – Based on Feed, Service Animal Husbandry
As can be seen from the formula, the particle length L and the yield Q are proportional to the other parameters, the higher the yield, the longer the particles, and the relatively short particles. Therefore, in order to achieve a specific particle length requirement, the yield of adjusting the granulator is a possible choice method. In actual feed production, the feed manufacturer is also done, and sometimes many outputs to meet the length of the particles. This issue will also be mentioned in the discussion later.
8RYChina Feed Industry Information Network – Based on Feed, Serving Animal Husbandry
8RY China Feed Industry Information Network – Based on Feed, Serving Animal Husbandry
As can be seen from the formula, the particle length L and the ring mode speed V or the ring die rotation speed N are inversely proportional, and when the feed speed is the yield Q, the speed of the ring mode is, the speed of the ring mode is, instant extrusion The shorter the particles, the longer it. For granularms with different size, the speed difference between the ring mold is very large, generally small granulator speed, low speed, but the ring mode speed is controlled in a suitable range, generally in 6 Between M / S ~ 9M / s to accommodate the need for granulation. When the linear speed of the ring mold is small, the quality of the particles is high, but the resulting particles may be more than the requirements, and too small line speed can affect yield; when the ring mode is high, although it is conducive to production Increased, but the resulting particles may be shorter than the requirements, and the quality of the particles will be deteriorated, which requires the feed manufacturer to choose the speed of the ring mode suitable for ourselves according to different feed varieties. The method can pass Changing the transmission ratio of the granulator drive system. 8RY China Feed Industry Information Network – Based on Feed, Serving Animal Husbandry
8RY China Feed Industry Information Network – Based on Feed, Serving Animal Husbandry [ 123]
The ring mold aperture D is not directly affected by the particle length L, and it is common to the length L, that is, the size of the ring type openings PSI; psi; the product is proportional to the sum of the square and the number N N of the ring mold aperture D. The larger the annular opening rate, the shorter the particles made, the longer the particles. When the opening rate of the ring mold corresponds to a different ring mold aperture, such as a ring mold having a ring die aperture is §æ1.8 mm, the opening ratio is about 25%, the ring mold aperture is §æ5mm, the opening rate About 38%, the greater the aperture, the higher the opening rate. In actual production, especially when producing small diameter particles, such as producing §æ1.8 mm shrimp materials, some users will complain that the particles produced are too long, because the corresponding ring mold opening rate is low because the small aperture is low. What is causing, the solution is to achieve a method of sacrificing a part of the yield, or by the above-mentioned approach to a method of improving the linear speed of the ring mode, there is also an adjustment cutter, etc. The following is discussed below.
8RY China Feed Industry Information Network – Based on Feed, Service Animal Husbandry
8RY Effect of Circular Model 8RY China Feed Industry Information Network – Bit Feed , Serving animal husbandry
For a granulator, the ring-mold inner diameter D, the ring model effective width W is more fixed parameters, which generally does not change, the user is not easy to change, so Their shadowsThe sound is not discussed here.The density of the particles is related to the raw material of the granulation, and the compression ratio of the ring mold is related to the compression ratio, the more the particles make the particles, the larger the density, but for a general product, the density of the particles is not large.Therefore, the particle density is not a main influencing parameter, and there is no more discussion.In summary, the larger the density of the particles, the smaller the length of the particles. 8RY China Feed Industry Information Network – Based on Feed, Serving Animal Husbandry
