Waste gas purification device suitable for double-screw extruder

Abstract

The invention discloses a waste gas purification device suitable for double-screw extruder. The waste gas purification device suitable for a double-screw extruder comprises a gas inlet device, a purification device set, an exhaust device and an automatic control module, the gas inlet device comprises a primary gas inlet pipeline, a suction fan, a filter screen and a secondary gas inlet pipeline, and each purification device comprises a purification net, a box body structure, a rotating shaft and a rotating supporting frame. The exhaust device comprises an exhaust fan, an exhaust pipeline, a gas return fan and a gas return pipeline; and the automatic control module comprises a waste gas component judgment device, a purifying agent concentration detection device, a rotary controller and an exhaust detection device. The waste gas purification device can judge the components of waste gas generated by double-screw extrusion and start the corresponding purification net, the purification device can detect the state of the purification net and automatically replace the purification net, unqualified waste gas after primary purification is circularly purified, finally, the purified gas is dried, secondary pollution is avoided in the treatment process, the exhausted gas can achieve a certain air cooling effect, and energy conservation and high efficiency are achieved.

Description

technical field [0001] The invention relates to the field of waste gas purification, in particular to a discharge waste gas purification device suitable for twin-screw extruders. Background technique [0002] Twin-screw extruder is developed from single-screw extruder and is widely used in chemical, rubber and plastic, food and other industries. Its applications include bulk granulation, mixing, coloring, masterbatch production, exhaust devolatilization, Mixing additives and various fillers, glass fiber reinforced homogenization and granulation, etc. [0003] When the twin-screw extruder processes different materials, due to the high temperature in the barrel and the existence of various chemical reactions, the production process is often accompanied by the generation of waste gas, which is harmful to the environment and human body to a certain extent. Most of the waste gas treatment methods are exhausted by fans. This method has low purification efficiency and cannot fully...

AI Technical Summary

Problems solved by technology

[0004] However, the existing exhaust gas purification devices have a fixed shape and limited functions. Most of them are only equipped with a collection cover or a simple filter device above the extruder, resulting in poor purification effect, and it is difficult to accurately judge the exhaust gas composition and the usage of the purification agent. Failure to automatically replace the purification cartridge in time during the process will result in incomplete purification

There is no detection of the gas after primary purification, so the purification effect cannot be guaranteed

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