In the production of extruded feed, the primary tools is a screw fish feed pellet extruder. The product is fed into the fish feed pellet extruder, and also the screw screw pushes the material to form an axial circulation.
At the same time, because of the mechanical friction between the screw as well as the product, the material and also the barrel, as well as the material inside the product, the product is strongly pressed, stirred, and sheared, and also therefore, the material is further refined as well as homogenized.
As the stress gradually enhances, the temperature level enhances as necessary. When the paste material is ejected from the die hole, under the action of a strong stress difference, the product is puffed by drifting fish feed making equipment, dehydrated and cooled down. The puffed product is loose, permeable, crisp, and also has good palatability and also taste.
The fish feed pellet extruder blowing technology appear the traditional processing innovation, makes the physical properties of the feed modification qualitatively, substantially advertises the advancement of the feed processing industry and also the breeding sector, and also is a significant technology in the feed market.
The fish feed pellet extruder puffing procedure is a procedure that integrates numerous procedures such as mixing, massaging, shearing, heating, as well as cooling. The following is a specific analysis from the aspects of density control, automated control and also power saving and also consumption reduction.
1. Thickness control innovation
In the extrusion procedure of fish feed pellet extruder, there are several elements that influence the density of feed, such as refining modern technology, fish feed pellet extruder tools, refining parameters, process control, feed basic materials, formula and so forth.
It is practical to manage the item density by altering the raw product or formula, yet it has little application worth; by transforming the screw configuration, the density control of the extruded feed item can be understood, however the procedure is inconvenient. Density control can likewise be accomplished by readjusting the operating specifications.
Furthermore, in the fish feed pellet extruder handling of aquatic feed, in order to satisfy the feeding requirements of marine animals, the ups and also downs of aquatic feed need to be regulated, and the ups as well as downs of feed are very closely related to thickness, so density control is used in the manufacturing of marine extruded feed.
Innovation is specifically crucial. At present, managing the density of extruded products is primarily attained by controlling the stress and also temperature level. The major techniques are as follows:
( 1 ) Open up a stress relief opening on the extruding cavity, as well as plug the pressure alleviation opening when producing floating feed, so regarding meet the requirements of high temperature and also high pressure for handling floating feed.
Open up the stress relief opening when feeding, so that when the material reaches the pressure alleviation hole, the pressure in the sleeve is partially released, as well as at the same time, some water vapor is likewise released from the stress relief hole.
These products are squeezed out by fish feed pellet extruder to the end of the extruding dental caries and then compacted to acquire a heavy feed with high mass density. This pressure relief opening can also be made use of to leave, so that the product loses part of the water vapor throughout the forced motion.
This fish feed pellet extruder process technique realizes the control of the thickness of the extruded item by regulating the pressure in the squeezing out cavity, and the result will not be affected due to the fact that the feeding amount does not require to be minimized.
( 2) A stress managing device is included the drifting fish feed extruder machine (pressurization before the die). The stress law of the fish feed pellet extruder is to install a shut-off shutoff in between the extrusion dental caries and also the discharge design template to readjust the stress distinction between the extrusion cavity as well as the outside of the extrusion tooth cavity.
( 2 )Pressure cutting modern technology (post-mold stress). A new type of thickness control system was developed for aquafeed. This density control system of fish feed pellet extruder adopts pressurized reducing innovation to keep a particular positive pressure in the reducing chamber.
When the material enters the reducing chamber from the puffing chamber, since the boiling point of water boosts with the stress, the flash dissipation can be decreased to manage the degree of growth of the product, and also the starch particles are promptly strengthened in the cutting chamber, as well as the material no more gets in the typical stress from the reducing chamber.
The positive pressure of the cutting chamber can be understood by inputting pressed air with an air pump, as well as the follower can be switched off when discharging.
This fish feed pellet extruder procedure approach avoids regulating other elements that impact the level of expansion, therefore lowering the demand for hand-operated procedure, as well as at the same time, the controllability is stronger than various other approaches.
Today, this brand-new fish feed pellet extruder technology has actually not been applied in China, but this modern technology transcends to the exhaust approach in terms of thickness control of extruded products and procedure and use, and is a brand-new instructions for the development of extruded innovation.
( 4) Regulating the opening rate of the design template. By transforming the opening rate of the discharge theme, the stress distinction before and after the layout can be transformed, so as to achieve the purpose of managing the density of the item. The hole is blocked.
2. Automatic control of fish feed extrusion process
The automated control of the fish feed pellet extruder extrusion process refers to the quick and also accurate control of the process parameters by gearing up the extrusion tools with a computer-aided control system.
The application of automatic control modern technology in the fish feed pellet extruder blowing process can not only enhance job performance, yet additionally enhance product quality stability. Designs of automated control at home as well as abroad
There are researches on all sides. The automatic control technology of the fish feed pellet extruder puffing process has made excellent progress, and a visualization control system of the puffing process has actually been established. The extruding system of fish feed pellet extruder based upon solution commercial setup software application understands the visual control of the extruding procedure
The sensor can be made use of to carry out on-site discovery and also responses on the operating criteria of the fish feed pellet extruder, instantly readjust the relevant functioning parameters of the drifting fish feed pellet equipment, as well as realize various preset by the driver.
Working specifications, with formula storage space, record printing, alarm system, vibrant display and also recording of working criteria. International computer system automated control modern technology has actually already been used in the field of feed processing
In the whole fish feed pellet extruder procedure, it has been developed from a single computer system control system to an sophisticated automated control system, which can display color photos in the central control room, computer program control as well as interaction network for drifting fish feed making machine procedure, it can finish all manufacturing treatments without unmanned operation.
Generally, the automatic control of blowing in feed processing abroad has been creating in the direction of the direction of integrating with product top quality.
While the intro of computer systems in my country is mainly to resolve the trouble of production automation, just concentrating on the monitoring of equipment operation in the manufacturing procedure as well as the control of stand-alone devices. It has actually not played its due duty in enhancing product high quality and also other elements.
3. Energy saving in extrusion procedure.
The issue of power conserving and also intake reduction is the study focus in the fish feed pellet extruder extrusion procedure.
At present, it is mainly with the research of low power intake handling innovation and the impact of primary procedure parameters on power intake, as well as the establishment of matching mathematical models to achieve the function of energy conserving and also usage decrease.
In order to reduce the power consumption in the fish feed pellet extruder blowing process, some domestic feed suppliers generally take measures from the procedure. For instance, in the manufacturing procedure of nursing pig feed, the corn resources utilized is not full puffed material, however part of the puffed product and part of the conventional material.
In the later fish feed pellet extruder granulation procedure, procedures such as development and reduced temperature granulation are utilized to ensure that the power intake per unit item is decreased.
From the above analysis, it can be seen that it is still a bottleneck trouble exactly how the process parameter study in the fish feed pellet extruder puffing procedure can be embodied in lowering power usage as well as can be understood in real production.
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