With the energetic development of contemporary aquaculture as well as feed market, the needs for feed quality are obtaining greater and also greater. For pellet feed created by pet feed production equipment, pellet length is a extremely crucial high quality examination index.
Cool and also constant pellet feed not only fulfills the sales needs of feed suppliers, but likewise meets the actual breeding requirements of users. Pellets that are also long, as well brief or irregular are not for pet feeding. In real manufacturing, the length of the pellets produced by the pet feed manufacturing machine is typically needed to be 2 to 3 times the diameter of the pellets.
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As an example, granules with a size of 3 mm are typically created with a length of 6 to 9 mm. Obviously, according to real customer needs as well as different feed varieties, the size needs are not necessarily within this variety.
Consequently, in order to create feed pellets that fulfill the requirements or as close as feasible to the requirements, we will certainly review some factors that influence the pellet size of the animal feed pellet making device and also discover the equivalent control approaches to make it beneficial to the production needs, which is important for feed producers significance. Based on years of experience in animal feed granulator style as well as field debugging, we will certainly review this issue from the following facets.
1. Parameters influencing the animal feed manufacturing machine itself:.
The outcome of the pet feed production machine is Q (kg/h), the internal size of the ring die is D (mm), the effective size of the ring die is W (mm), the direct rate of the ring die is V (m/s), as well as the rotational speed of the ring die is n (r/ min), the ring die aperture is d (mm), the ring die opening rate is m, the number of openings is n ( items), and the granulation size is L (mm),.
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For the above formula, it is simple to analyze the aspects influencing the pellet length L of the animal feed production equipment:.
( 1) The impact of the output of the animal feed manufacturing machine.
It can be seen from the formula that the pellet size L is proportional to the outcome Q. With various other criteria constant, the greater the return, the longer the pellet, otherwise the shorter the pellet. Therefore, adjusting the result of the pet feed pelletizer to fulfill details pellet size needs is a feasible alternative. In actual feed manufacturing, feed makers do the exact same, occasionally giving up big quantities of result to satisfy pellet size requirements. This concern will be stated in the complying with discussion.
( 2) Influence of ring die line speed or rotational rate.
It can be seen from the formula that the pellet length L is inversely symmetrical to the ring die direct rate V or the ring die direct speed n. When the feeding rate, that is, the output Q, remains continuous, the faster the ring die speed, the much shorter the instantaneously extruded pellets, and the other way around. For different dimensions of animal feed pelletizers, the rotational speed of the ring die varies greatly.
Normally, the rotating speed of the little pet feed making equipment is high, and also the rotating speed of the large pet feed manufacturing machine is low, yet the straight rate of the ring die is managed within a ideal range, usually in between 6m/s ~ 9m/s, to satisfy the requirements of granulation.
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When the direct speed of the ring die is tiny, the high quality of the pellets is high, however the pellets may be longer than called for, and the line speed is as well small, which will certainly impact the outcome; when the linear speed of the ring die is high, although it is beneficial to improve the outcome, the pellets may be shorter than the demands, and the high quality of the pellets It will certainly become worse, which requires the feed manufacturer to select its very own ring die line speed according to various feed ranges, and also understand it by altering the transmission ratio of the pet feed manufacturing equipment transmission system.
( 3) Impact of ring die aperture and porosity.
The ring die aperture D has no direct effect on the pellet length L, it has an result on the length L along with the variety of openings N, that is, the dimension of the ring die opening ratio, due to the fact that the opening proportion as well as the square of the ring die size D as well as the number of openings N is symmetrical to the item of. The bigger the porosity of the ring die, the shorter the pellets, and the other way around, the longer the pellets. The aperture proportion of the ring die represents various ring die apertures. As an example, a ring die has an opening rate of about 25%, and a ring die has an opening rate of regarding 38%.
Generally speaking, the larger the pore dimension, the higher the open porosity. In actual production, especially when generating small-diameter pellets, such as 1.8 mm shrimp, some customers complain that the pellets are also long, which is brought on by the relatively reduced opening rate of the ring die when the aperture is small. One of the solutions is to compromise part of the yield, or to achieve by increasing the line speed of the ring die. Furthermore, adjusting the cutter is discussed below.
( 4) Impact of ring die inner diameter, reliable size as well as pellet thickness.
For the animal feed production machine, the internal diameter D of the ring die as well as the efficient width W of the ring die are dealt with specifications, which generally do not change, and also it is challenging for users to alter them, so they will not be gone over below. The pellet density is related to the raw material for granulation as well as likewise to the compression proportion of the ring die.
The greater the compression proportion, the firmer as well as denser the pellets will be. However, for general items, the pellet thickness is not really various, so the pellet thickness is not the main affecting specification, so it will certainly not be reviewed too much below. Basically, for the exact same granulation raw material, the bigger the pellet density, the shorter the pellet length.
2. How to address the oil-free phenomenon in the production process of the pet feed pellet making machine?
animal feed manufacturing makers are powered by power, however oftentimes oil drive has become essential. As all of us understand, the devices functions fast and also depends totally on the power belt, and oil is especially crucial as the power supply of the devices.
Resolve the problem of no oil in the animal feed production machine:.
( 1) The supplier of the complete set of devices with an outcome of 5 lots of concentrate suggests that you examine the primary shaft and also blades of the pet feed pellet machine initially to make sure that there is no material residue in the void.
( 2) The maker of the little animal feed production equipment suggests that the customer requires to very carefully cleanse the filter screen in the oil filter.
( 3) Eliminate the oil block of the animal feed production device. Normally, the tool of choice is: an efficient hollow tube of a specific size, primarily utilized to cleanse the pollutants packed into the oil opening.
( 4) We frequently say that along with checking the above issues, we must additionally inspect whether there is oil leak at the refueling part. If the oil leakage is especially significant, it will absolutely bring about no oil supply. The service to this issue is to add an oil liner.
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