Driving device of multistage gas compressor

Abstract

A driving device of a multistage gas compressor is arranged in an installing cavity of a compressor case, comprises a power portion, a drive mechanism and a piston and is characterized in that the power portion comprises a motor and a crank shaft, a power output shaft of a motor is connected with the crank shaft, a crank throw is arranged on the crank shaft, the drive mechanism is arranged on the crank throw and comprises multistage connecting rod mechanisms, and the multistage connecting rod mechanisms are identical to multistage gas cylinders of the gas compressor in number and correspond to the gas cylinders in a one-to-one mode. Each multistage connecting rod mechanism comprises connecting rods, each connecting rod comprises a shaft rod, an installing ring is arranged at one end of the shaft rod, a connecting ring is arranged at the other end of the shaft rod and is in driving connection with the piston, and each installing ring is in driving connection with the crank shaft. An oil rod is arranged on one connecting rod of each connecting rod mechanism, an oil cylinder is arranged at the bottom of the installing cavity of the compressor case, an opening of the oil cylinder is opposite to the crank shaft, the oil rod extends into the oil cylinder, and the portion, extending into the oil cylinder, of the oil rod is always within the depth range of the oil cylinder. The problems of low stability, more severe abrasion and short service life of the driving device in the multistage gas compressor under the high effect are solved.

Description

technical field [0001] The invention relates to a driving device, in particular to a driving device for a multistage gas compressor. Background technique [0002] A gas compressor is a power device that converts mechanical energy into gas pressure energy. It is often used to provide gas power for pneumatic tools, and is also often used to pressurize oxygen, natural gas and other gases. The current gas compressor mainly compresses the gas through the cylinder. In order to ensure a higher gas pressure, the gas compressor often adopts multi-stage compression to achieve the purpose of boosting. Multi-stage compression requires multiple piston cylinders to compress the gas, and the pistons of the piston cylinders are driven by the crankshaft installed in the gas compressor casing. As the pressure of the gas becomes higher and higher, the pressure reaction force received by the piston becomes stronger and stronger, and this reaction force will have a greater impact on the movemen...

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Problems solved by technology

[0003] In order to solve the above problems, the present invention provides a driving device for a multi-stage gas compressor, which can effectively solve the problems of large wear of the driving device of the gas compressor and short service life of the gas compressor

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