EVA (Ethylene Vinyl Acetate) plastic film extruder

Abstract

The invention belongs to the technical field of extruders and particularly relates to an EVA (Ethylene Vinyl Acetate) plastic film extruder which comprises a base, a transmission unit, a machine barrel, a cooling device, a drainage system and a filter box, wherein the filter box is arranged on one side of the machine barrel, and a partition plate is connected into the filter box in a sealing and sliding mode; a sliding groove is formed in the middle part of the partition plate, and a sliding plate is slidably connected into the sliding groove in a sealing mode; and limiting grooves are formed in the two sides of the partition plate respectively, trapezoidal guide blocks are fixedly connected to the two sides of the sliding plate respectively, triangular inclined blocks are fixedly connected to the side walls of the two sides of the filter box respectively, an electric push rod is fixedly connected between the upper surface of the partition plate and the inner wall of the top of the filter box, through holes which are evenly distributed are formed in the partition plate and the sliding plate respectively, and activated carbon layers are arranged in the through holes respectively. For the EVA plastic film extruder, by using a water solution in the drainage system for washing and purifying gas, the utilization rate of water resources is increased; and meanwhile, gas flow in the filter box is accelerated through vertical movement of the partition plate, so that the gas purification efficiency is effectively improved.

Description

technical field [0001] The invention belongs to the technical field of extruders, in particular to an EVA plastic film extruder. Background technique [0002] The extruder is one of the types of plastic machinery. The extruder heats the plastic to make it into a viscous flow state. The continuum, and then through cooling, the plastic with a certain geometric shape and size changes from a viscous fluid state to a high elastic state, and finally cooled and shaped into a glass state to obtain the desired product. [0003] In the prior art, due to the moisture absorption of the raw materials and additives used or the raw materials themselves contain volatile substances, the materials are heated and compressed by the screw to produce waste gas, which contains more harmful substances. If it is directly inhaled by the staff in the workshop, It will cause certain harm to human health. There are also some technical solutions for extruder waste gas treatment in the prior art. For ex...

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Problems solved by technology

[0005] In order to make up for the deficiencies of the existing technology, the structure of the waste gas treatment device in the prior art is complicated because the raw materials and additives used absorb moisture or the raw materials themselves contain volatile substances, and the materials in the extruder are heated and compressed by the screw to generate waste gas. , the operating cost and energy consumption are large, and the flow speed of the gas machine is low after entering the device, the purification rate is poor, and the water in the cooling tank is directly discharged outward, resulting in the waste of water resources. The present invention proposes an EVA plastic film extruder

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