Extrusion pressing puffing apparatus capable of removing fibre in materials

Abstract

The invention discloses an extrusion expansion device for removing fibers in materials in the feed processing device field, which comprises an extrusion cavity, wherein a screw is arranged in the extruding cavity, an outlet end of the extrusion cavity is provided with a die plate frame, the die plate frame is provided with a discharge die plate, the discharge die plate is provided with a plurality of die holes which run through the discharge die plate, the die holes are communicated with the extrusion cavity, and a blade is arranged outside the discharge die plate; a fiber hooking die plate is arranged in a channel between the discharge die plate and the extrusion cavity and is provided with a plurality of fiber hooking holes, and one side, which faces toward the extrusion cavity, of each of the fiber hooking holes is provided with an inner chamfer angle. When the device works, the fiber hooking die plate can hook the fibers to ensure that the fiber amount of a material passing through the fiber hooking die plate is reduced, material particles formed after the material passes through the fiber hooking die plate and is cut by the blade have smooth and beautiful surfaces, the blade is difficult to hook the fibers, and the abrasion of the blade can be reduced. The device is particularly suitable to be used for the expansion processing of aquatic feed with large fiber amount.

Description

technical field [0001] The invention relates to a mechanical device for extruding and expanding aquatic feed. Background technique [0002] At present, when processing extruded aquatic feed, an extruding device can be used. The extruding device mainly includes an extruding chamber, a screw is arranged in the extruding chamber, and a template frame is arranged at the outlet end of the extruding chamber. A discharge template is installed, and a plurality of die holes passing through the discharge template are arranged on the discharge template. The die holes communicate with the extrusion cavity, and blades are arranged on the outside of the discharge template. After the material enters the extrusion cavity, under the push and extrusion of the screw, the temperature rises to form a high-temperature, high-pressure gelatinized product that is extruded from the die hole, expands and cools rapidly; and then is cut by the blade to form extruded pellet feed; Because people pay more...

AI Technical Summary

Problems solved by technology

However, the current pulverizers cannot pulverize the fibers in the raw materials very well, and the fibers have a great influence on the surface smoothness of the puffed particles.

During the production of the extruder, the fibers usually hang on the discharge template of the extruder, which will scratch the surface of the puffed particles; at the same time, after the extruder has been in production for a period of time, some fibers will also hang on the cutting blade. Fibers can affect the cutting of the blade and thus the aesthetics of the puffed pellets

[0003] In response to this problem, some manufacturers increase the degree of compression between the blade and the template in order to remove fibers, but this will increase the wear of the blade and the template. At the same time, after a period of production, the blade will still hang on the fiber after the blade is worn, which will affect the extruder. Long-term stable production

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