Hand-operated air extractor

Abstract

The invention discloses a hand-operated air extractor. The hand-operated air extractor comprises a handle, a rotating shaft, a hand wheel, an air cylinder, an air extraction hole, a piston, a crankshaft, an air extraction pipe, an exhaust pipe, a sealing ring, a metal box and a base; the metal box is fixed to the base; the metal box is internally provided with the air cylinder; the air cylinder isinternally provided with the piston which is fixedly connected with the crankshaft; the outer side of the sidewall of the lower half of the air cylinder is provided with the air extraction hole, andthe air extraction hole is communicated with the air extraction pipe extending out of the metal box; the lower end of the air cylinder is further provided with an exhaust valve, and the exhaust valveis locked on the inner wall of the metal box through an exhaust hole screw and is pressed against the lower port of the air cylinder by the elastic force of a spring; the top of the metal box is provided with the exhaust pipe; the right side of the outer wall of the metal box is provided with the hand wheel connected through the rotating shaft, and one end of the hand wheel is fixedly connected with the handle. The hand-operated air extractor is simple in structure and reasonable in design; in the construction industry where power facilities are not complete, the hand-operated air extractor ispractical and convenient.

Description

technical field [0001] The invention relates to the technical field of air extractors, in particular to a hand-operated air extractor. Background technique [0002] In the chemical industry and construction industry, air extractors are often used to remove odorous gases in the air to improve the working environment. Due to the presence of large particles of floating matter in the air during production, the problem of blockage of the suction port often occurs when the suction device in the prior art sucks air, resulting in frequent dredging of the pipeline, which is very inconvenient. [0003] Moreover, the existing air extractors are all driven by motors. In the construction industry, due to the incomplete power facilities, there is often no power supply in many places, and it is inconvenient to use when air extraction is required. A hand-operated air extractor. Contents of the invention [0004] The purpose of this utility is to overcome the shortcomings in the prior ar...

AI Technical Summary

Problems solved by technology

Due to the presence of large particles of floating matter in the air during production, the air suction port of the existing air suction device often has the problem of clogging when inhaling, resulting in frequent dredging of the pipeline, which is very inconvenient

[0003] Moreover, the existing air extractors are all driven by motors. In the construction industry, due to the incomplete power facilities, there is often no power supply in many places, and it is inconvenient to use when air extraction is required. hand pump

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