Exhaust bearing block and screw compressor

Abstract

The invention relates to the related field of compressors, and discloses an exhaust bearing block and a screw compressor. The exhaust bearing block comprises a bearing block body. An air supply port is formed in the end face of the bearing block body, an air supply ripple attenuation chamber communicating with the air supply port is further formed in the bearing block body, and the volume of the air supply ripple attenuation chamber is larger than that of the air supply port. The exhaust bearing block is included in the screw compressor. According to the bearing block and the screw compressor, because the bearing block body is provided with the air supply ripple attenuation chamber communicating with the air supply port, low-frequency vibration generated by the air supply port in the air supply process can superpose mutually in the air supply ripple attenuation chamber, airflow ripples generated by the air supply port in the air supply process can attenuate in the air supply ripple attenuation chamber, the purpose of reducing the airflow ripples of air supply is achieved, then, the vibration of an air supply pipe of the screw compressor is reduced, the noise of the air supply pipe of the screw compressor is lowered, and the reliability of the screw compressor is improved.

Description

technical field [0001] The invention relates to the related field of compressors, in particular to an exhaust bearing seat and a screw compressor. Background technique [0002] At present, the air supply ports of screw compressors are divided into two types: axial air supply ports and radial air supply ports, among which the axial air supply ports are as follows: figure 1 As shown, it is to supply air along the outer diameter of the compressor rotor. The commonly used structure is to set an axial air supply port 100 on the shell surrounding the rotor or on the slide valve; the radial air supply port is as follows figure 2 As shown, it supplies air from the exhaust of the rotor, and the common structure is to open a radial air supply port 200 on the exhaust bearing seat. [0003] In order to increase the amount of air supply, the usual method is to increase the diameter of the air supply port and the air supply port. However, due to the periodic change of the gas in the sc...

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Problems solved by technology

[0004] The purpose of the present invention is to provide an exhaust bearing seat to solve the problem that the air flow pulsation generated by the existing air supply port causes excessive vibration and noise to the air supply pipeline

[0005] Another object of the present invention is to provide a screw compressor, including the above-mentioned exhaust bearing seat, to solve the problem of large noise and vibration of the air supply pipeline of the existing screw compressor

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