Bilinear asymmetric toothed medium-pressure gear pump

Abstract

The invention discloses a bilinear asymmetric toothed medium-pressure gear pump, and relates to a high-emission medium-pressure gear pump aiming at extracting a raw material with larger viscosity in the chemical engineering and petroleum industries. The bilinear asymmetric toothed medium-pressure gear pump comprises a driving shaft, a front end cover, a pump body, floating pressure side plates, a back end cover and a driven shaft, wherein the front end cover and the back end cover are respectively mounted at the front end and the back end of the pump body; the driving shaft is mounted on the pump body through the two floating pressure side plates, penetrates through a shaft hole in the front end cover, and stretches out the pump. The bilinear asymmetric toothed medium-pressure gear pump is characterized in that a bilinear asymmetric gear I and a bilinear asymmetric gear II are mounted on the driving shaft between the two floating pressure side plates; a bilinear asymmetric gear III and a bilinear asymmetric gear IV are mounted on the driven shaft. The bilinear asymmetric toothed medium-pressure gear pump has the characteristics that the structure is novel, the design is ingenious, the service life can be prolonged, the emission capacity is improved, and the noise is lower; the bilinear asymmetric toothed medium-pressure gear pump integrates the economical efficiency and the practicability as a whole.

Description

technical field [0001] The double-line asymmetric tooth-shaped medium-pressure gear pump of the present invention relates to a large-displacement medium-pressure gear pump for pumping raw materials with high viscosity in the chemical and petroleum industries. Background technique [0002] The existing involute gear pumps have reached a mature stage in design and manufacture and are widely used because of their high bending strength, good manufacturability, insensitivity to center distance, and convenient processing and measurement. However, due to the inherent theoretical defects of this tooth shape, its innovative development in large displacement and high pressure is limited. According to previous theoretical research results, the instantaneous displacement of the involute gear pump changes according to the parabolic law with the rotation angle of the driving gear. This property leads to the increase of the flow pulsation of the involute gear pump. cause increased noise. ...

AI Technical Summary

Problems solved by technology

Use and solve the existing problems in the prior art: when the displacement of the involute gear pump increases, the flow pulsation will increase and the noise will increase; the arc gear pump has a small displacement due to the short teeth, which cannot meet the needs of the market. The demand for large displacement gear pumps, at the same time, due to the failure to solve the leakage problem of the pump when the working pressure increases, so many problems such as working in a low pressure environment cannot meet the requirements of medium pressure gear pumps

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