High-pressure double-screw pump

Abstract

The invention relates to pump equipment, and aims to provide a high-pressure double-screw pump with high stability. According to the technical scheme adopted by the invention, the high-pressure double-screw pump comprises a drive shaft and a driven shaft arranged in a pump shell, and further comprises a pipeline, wherein one end of the drive shaft is a power connecting end, and the other end of the drive shaft is equipped with a lubricating oil pump driven by the drive shaft; one end of the pipeline is connected with a lubricating oil outlet of the lubricating oil pump; and the other end of the pipeline is opposite to a to-be-lubricated position of the high-pressure double-screw pump. The high-pressure double-screw pump avoids influences caused by manual misoperation, realizes forced lubricating of joint parts of screws, and greatly improves operation stability of the double-screw pump.

Description

technical field [0001] The invention relates to pump equipment, in particular to a high-pressure twin-screw pump. Background technique [0002] The screw pump is a displacement rotor pump, which relies on the volume change of the sealed cavity formed by the screw and the bushing to suck and discharge the liquid. Screw pumps are divided into single screw pumps, double, three and five screw pumps according to the number of screws. The screw pump is characterized by stable flow, small pressure pulsation, self-priming ability, low noise, high efficiency, long life and reliable operation. [0003] At present, the pressure of the conventional twin-screw pump cannot exceed 4.0Mpa during the process of conveying the medium. Under long-term continuous conveying, due to the bending deformation of the main and driven shafts, the vibration of the pump equipment is large, and the bearings, mechanical seals, etc. generate heat. Seriously, greatly reducing the service life of the pump. ...

AI Technical Summary

Problems solved by technology

[0003] At present, the pressure of the conventional twin-screw pump cannot exceed 4.0Mpa during the process of conveying the medium. Under long-term continuous conveying, due to the bending deformation of the main and driven shafts, the vibration of the pump equipment is large, and the bearings, mechanical seals, etc. generate heat. Seriously, greatly reducing the service life of the pump

In order to solve the above problems, the conventional method is: 1. Reduce the length of the main and slave shafts and reduce their flexibility, but this way of conveying pressure is small, the self-priming and boosting capabilities of the equipment are poor, and it cannot adapt to high viscosity. material transport

2. Improve the material of the main and slave shafts to increase their strength, but this method takes a long time to develop and invests a lot of capital

However, this method is often due to human negligence, forgetting to turn on the lubricating oil pump, resulting in accidents such as burning shafts and mechanical seal damage.

At the same time, this method treats the symptoms but not the root cause, and fails to solve the problem fundamentally.

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