Method and device for extrusion molding and explosion-proof relief of sensitive materials

Abstract

The invention relates to a method and device for extrusion molding and explosion-proof relief of sensitive materials, belonging to the technical field of extrusion molding processing. In the method, the whole or part of a machine barrel of a screw extruder is of an open type structure, a hydraulic driving system is used for driving the open type machine barrel to open and close, and the machine barrel can be rapidly opened to achieve the purpose of explosion-proof relief when process parameters of pressure, temperature, torsion torque or rotational speed achieve alarm values through a matching on-line measuring and controlling system; and the explosion-proof relief device comprises the open type machine barrel, the hydraulic driving system and the on-line measuring and controlling system, and is applied in the screw extruder. By adopting the method and the device, the situations of a plurality of the process parameters of the screw extruder during the operation process can be detected in an on-line manner, when the detected process parameters exceed the set alarm values, the machine barrel of the screw extruder can be rapidly opened for preventing explosion and other dangerous accidents, thereby ensuring stable and safe operation of the screw extruder; and the method and the device are applicable to extrusion molding processing of the special sensitive materials, such as heat-sensitive plastic, gunpowder, explosives and the like.

Description

technical field [0001] The invention relates to an explosion-proof pressure relief method and device for extrusion molding of sensitive materials, and belongs to the technical field of extrusion molding processing. Background technique [0002] With the development of various visualization technologies, online and offline detection technologies, extrusion molding processing is developing towards automation, continuity, safety and high quality. In the large-scale industrial production of extrusion molding, safety is very important for extrusion molding of heat-sensitive plastics, gunpowder, explosives and other special sensitive materials. In the extrusion molding process of these special sensitive materials, in the barrel of the extruder, the material is in a closed state, the influence of many factors such as the entry of external hard impurities, processing temperature, load or screw speed exceeding the upper limit of the process, etc. Very likely to cause an explosion. ...

AI Technical Summary

Problems solved by technology

However, it is difficult to grasp this method in practice

If the shell design is too weak, it is easy to deform during the production process, mainly because the diameter of the inner cavity becomes larger and the shell is scrapped; if the shell thickness is too large, the explosion venting effect will not be achieved, resulting in danger.

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