Method for reducing heat generation of plunger pump, and used rotor and rotor bearing support structure

Abstract

The invention discloses a method for reducing the heat generation of a plunger pump. By reducing the rotating speed of a rotator contacting working solution in a pump cavity, heat generated by friction between the rotator and the working solution is reduced. A rotor and a rotor bearing support structure which are used by the method comprise a pump case (1), wherein a bearing outer ring (2) is fixed in the pump case (1); and an inner ring assembly is supported on the bearing outer ring (2), and a rotor (3) which can rotate in a sliding way is arranged in the inner ring assembly. By sheathing the bearing inner ring which is connected in a sliding way on the rotor which rotates at high speed, the invention prevents the rotor which rotates at high speed from directly contacting the working solution and enables the rotor to contact the working solution by the bearing inner ring with lower rotating speed which is in sliding connection with the rotor, thereby reducing the heat generated by friction, lowering the working temperature of the plunger pump, increasing the mechanical efficiency and the overall efficiency of the plunger pump and prolonging the working life of the plunger pump.

Description

technical field [0001] The invention relates to a method for reducing heat generation of a plunger pump, a used rotor and a supporting structure for the rotor bearing. Background technique [0002] In the prior art, the inner ring of the bearing supporting the rotor is fixed with the rotor through a screw sleeve. During the working process of the plunger pump, the inner shaft drives the rotor to rotate, and the inner ring of the bearing fixed with the rotor also rotates synchronously with the rotor. Since the inner ring of the bearing in the plunger pump wraps the rotor, it has a large contact area with the working fluid in the pump chamber. The temperature in it increases rapidly. Due to the increase of the calorific value of the plunger pump, the friction pairs inside the plunger pump work under the harsh conditions of high temperature and high speed, resulting in increased friction loss and reduced mechanical efficiency. At the same time, the wear of each friction pair...

AI Technical Summary

Problems solved by technology

Due to the increase of the calorific value of the plunger pump, the friction pairs inside the plunger pump work under the harsh conditions of high temperature and high speed, resulting in increased friction loss and reduced mechanical efficiency.

At the same time, the wear of each friction pair is accelerated, which directly affects the working life of the hydraulic pump.

Due to the wear of the friction pairs, the oil leakage between the friction pairs increases, and the volumetric efficiency decreases, which in turn reduces the overall efficiency.

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