Pressure adjusting device for fodder puffing equipment

Abstract

The invention discloses a pressure adjusting device for fodder puffing equipment. A plate body with a die hole is provided and an aperture pressure sensing adjusting device is arranged corresponding to the die hole, so the size of the aperture can be adjusted according to pressure and excessive large pressure can be quickly released; the aperture can be reduced upon inadequate pressure, so fodder puffing quality can be guaranteed; and the pressure adjustment of the aperture pressure sensing adjusting device can be finished by a spring and an aperture adjusting block pushed by the spring. The beneficial effects are that the pressure adjusting device is simply structured and rationally designed; maximum pressure inside a spiral extrusion puffing mechanism can be adjusted; upon excessive large pressure, the aperture is expanded, so blocking can be prevented and pressure can be released; upon pressure reduction, the aperture can be reduced, so fodder puffing quality can be guaranteed; and quantitative adjustments can be provided to the maximum pressure; and great importance is attached to safe production and product quality improvement.

Description

technical field [0001] The invention relates to feed production equipment, in particular to a pressure regulating device for feed puffing equipment. Background technique [0002] Feed extruder has been widely used in the field of food and feed processing. Expansion is a technological operation in which the material is humidified, heated and tempered, and extruded out of the die hole or suddenly ejected out of the pressure vessel, and the volume is expanded due to a sudden drop in pressure. Extrusion technology has been widely used in the field of food and feed processing. In the prior art, in order to obtain extruded puffed products of various sizes and densities with high gelatinization degree, the material is firstly passed through a conditioner using water and steam for conditioning, and the material is mixed with water, water and steam in the conditioner. The steam is fully contacted and penetrated, and after a certain period of time, the material is pre-gelatinized ...

AI Technical Summary

Problems solved by technology

However, during the puffing process of the extruder, the material will move in the screw sleeve with the rotation of the screw. Due to the change of the thread depth on the screw, the pressure on the material will continue to increase. During this process, the screw sleeve It is very easy to cause blockage and high temperature in the puffing sleeve; moreover, the quality of puffing depends on the pressure and temperature in the barrel. Different types of materials require different pressures to achieve good puffing effects. The size is mainly determined by the gap between the barrel and the screw

The extrusion device of the extruder in the prior art mainly has the following disadvantages: the pressure in the barrel cannot be adjusted according to the type of material, which affects the puffing effect

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