Diving-pump water-lubricated anti-thrust device

Abstract

The invention discloses a diving-pump water-lubricated anti-thrust device, which comprises a bearing sleeve, a thrust bearing disk and a shaft sleeve, wherein the bearing sleeve is a cylinder body which is provided with a thrust flange at one end, the flange end surface of the thrust flange is provided with water-guiding slots which are radially, circumferentially and uniformly distributed and extend to all parts of the inner-hole wall of the thrust flange, the thrust bearing disk is a flat disk with a central hole, one end surface of the thrust bearing disk is provided with water-combing slots which are radially, circumferentially and uniformly distributed and extend to all parts of the inner wall of the central hole, the other end surface of the thrust bearing disk is smooth, the shaft sleeve is a cylinder body which is provided with a thrust flange at one end and can rotate along with a pump rotating shaft, the thrust bearing disk and the bearing sleeve are sequentially sleeved on the shaft sleeve in the mode of sliding fit, the end surface of the thrust bearing disk provided with the water-combing slots is stuck to the thrust flange of the shaft sleeve, and the end surface of the bearing sleeve provided with the water-guiding slots is stuck to the smooth surface of the thrust bearing disk. The diving-pump water-lubricated anti-thrust device has the beneficial effects that impact and friction damage generated at the end part of a pump shaft sleeve and the end part of the bearing sleeve is reduced, the smallest upward and downward running quantity of a pump vane is maintained for a long time, and the service life of a diving pump is prolonged.

Description

technical field [0001] The invention relates to a thrust bearing used on a pump body of a submersible pump, in particular to a water-lubricated thrust device of the submersible pump. Background technique [0002] In the prior art, the pump body of the submersible pump includes a pump casing, a diversion casing, pump blades, a pump shaft, and bearing housings and bearings at both ends. And rely on the end gasket of the shaft sleeve and the end clearance of the bearing for axial positioning, because the installation of the pump body must ensure that there is sufficient clearance between the pump blade and the guide shell to ensure the free rotation of the pump blade, and because the guide shell There is a problem of cumulative error caused by superimposed installation of pump blades. There is a situation where the pump shaft drives the pump blades to move up and down. During operation, the end gasket of the shaft sleeve and the end of the bearing produce impact and friction. L...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the pump body of the submersible pump includes a pump casing, a diversion casing, pump blades, a pump shaft, and bearing housings and bearings at both ends. And rely on the end gasket of the shaft sleeve and the end clearance of the bearing for axial positioning, because the installation of the pump body must ensure that there is sufficient clearance between the pump blade and the guide shell to ensure the free rotation of the pump blade, and because the guide shell There is a problem of cumulative error caused by superimposed installation of pump blades. There is a situation where the pump shaft drives the pump blades to move up and down. During operation, the end gasket of the shaft sleeve and the end of the bearing produce impact and friction. Long-term operation will cause mutual wear between them, and the wear will reach After a certain level, the momentum of the pump blades driven up and down by the pump shaft will gradually increase, causing the intermittent impact friction between the pump blades and the guide casing to change from intermittent impact friction to long-term impact friction, which will eventually lead to failures caused by wear of the pump blades and shorten the service life of the pump; How to reduce the impact and friction damage of the end washer of the shaft sleeve and the end of the bearing when the submersible pump is running, maintain the minimum serial momentum of the pump shaft driving the pump blades to move up and down for a long time, reduce the failure caused by the wear of the pump blades, and prolong the use of the submersible pump Life is a technical problem that needs to be solved at present

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