A feeding mechanism for an extruder for the production of plastic pipes

Abstract

The invention relates to the field of plastic pipe production and processing devices, in particular to a feeding mechanism for a plastic pipe production extruder. The feeding mechanism comprises a hopper, a feeding pipe, an anti-blocking structure, a smashing structure, a screening structure, a sealing structure and a pressure relief structure. By installing the anti-blocking structure for preventing the 'bridging' phenomenon of powdery plastic raw materials in the hopper, the powdery plastic raw materials can be further smashed, the situation that the powdery plastic raw materials block the feeding pipe due to the gravity can be avoided, and the feeding speed can be increased; and besides, the anti-blocking structure can synchronously drive the smashing structure to work when working, caked powdery plastic raw materials can be thoroughly smashed by the work of the smashing structure, and thus it can be avoided that the caked powdery plastic raw materials block the feeding pipe, that is to say, the work of the smashing structure can react on the anti-blocking structure to make the working efficiency of the smashing structure higher.

Description

technical field [0001] The invention relates to the field of plastic pipe production and processing devices, in particular to a feeding mechanism for plastic pipe production extruders. Background technique [0002] Plastic pipes are generally made of synthetic resin, that is, polyester, added with stabilizers, lubricants, plasticizers, etc., and extruded in a pipe making machine by a "plastic" method. Because of its light weight, corrosion resistance, beautiful appearance, no bad smell, easy processing and convenient construction, it has been more and more widely used in construction projects. It is mainly used for water supply system piping, drainage, exhaust and sewage sanitary pipes, underground drainage pipe systems, rainwater pipes, and threading pipes for wire installation in housing construction. Extruder is one of the types of plastic machinery. According to the flow direction of the head and the angle between the centerline of the screw, the extruder can divide the...

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Problems solved by technology

[0003] In the use of raw materials for plastic pipe production extruders, powdered plastic raw materials are often used, but because powdered plastic raw materials will absorb moisture in the air during storage, which will cause agglomeration of powdered plastic raw materials. The agglomerated powder raw material is easy to block the hopper when it is poured into the hopper, which seriously affects the production efficiency of the plastic pipe, and some powder plastic raw materials containing large particles of impurities will directly enter the extruder after being directly poured into the hopper inside, which will greatly affect the production quality of plastic pipes

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