Waste gas collecting device for plastic extruder

Abstract

The invention discloses a waste gas collecting device for a plastic extruder. The device is hermetically mounted at an exhaust port of the extruder, and comprises a vacuum alarm, a first connecting pipe, a waste gas collecting tank, a second connecting pipe and a vacuum pump which are hermetically connected in sequence, a silicone oil-water mied liquid is stored in the waste gas collecting tank, a metal screen is arranged over the liquid level of the silicone oil-water mixed liquid in the waste gas collecting tank, the first connecting pipe extends to the bottom of the silicone oil-water mixed liquid, and the second connecting pipe is connected to the top of the waste gas collecting tank. After actual production, the blocking frequency of the waste gas pipeline in the production process is reduced, and the production efficiency of operators is improved.

Description

technical field [0001] The application relates to chemical materials, in particular to a waste gas collection device for plastic extruders. Background technique [0002] During the plastic melt extrusion process, the low molecular components, moisture, impurities and other substances entrained in the raw materials will continue to overflow under heat. If they are not discharged in time, it will affect the performance and appearance of the processed product, resulting in product quality defects. Direct discharge will cause Environmental pollution. Therefore, during the plastic extrusion process, an exhaust gas collection device is generally installed at the rear of the mixing section, and the vacuum pump is used to generate negative pressure to directly suck the exhaust gas during the processing into the exhaust gas collection tank. [0003] However, during the long-term continuous production of the extruder, especially in winter, the low-melting organic matter in the waste g...

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Problems solved by technology

[0003] However, during the long-term continuous production of the extruder, especially in winter, the low-melting organic matter in the waste gas is easy to cool and condense in the pipeline to cause material blockage. At present, the general waste gas collection tank uses water medium as the waste gas absorption liquid, and the waste gas absorption efficiency Generally, if the operator does not clean and replace the collection tank and pipeline in time, it will even cause production interruption and delay production efficiency

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