Bearing antifouling device and centrifugal pump provided with bearing antifouling device

Abstract

The invention discloses a bearing antifouling device and a centrifugal pump provided with the bearing antifouling device. A pump spindle is sleeved with the bearing antifouling device; the bearing antifouling device comprises a bearing gland, a bearing and a bearing blocking sleeve; two ends of the bearing outer ring are pressed and fixed through the bearing gland; an inner ring of the bearing is mounted on the pump spindle; one end of the bearing blocking sleeve is closely adjacent to the bearing, and the pump spindle is sleeved with the bearing blocking sleeve; the bearing antifouling device also comprises a fouling blocking plate; the fouling blocking plate is closely adjacent to the other end of bearing blocking sleeve; the pump spindle is sleeved with the fouling blocking plate; and the fouling blocking plate can rotate with the pump spindle. The bearing antifouling device and the centrifugal pump are simple in structure, safe and reliable, and can effectively prevent leaked media of the pump and dust from entering a bearing chamber, cool the bearing, prolong the service life of the bearing and improve the operation reliability of the pump.

Description

technical field [0001] The invention relates to a bearing antifouling device and a centrifugal pump, in particular to a bearing antifouling device applied to a centrifugal pump and the centrifugal pump. Background technique [0002] 20-30% of the faults of centrifugal pumps are caused by bearing problems, and the vast majority of bearing faults are due to leakage of the pump seal chamber, and the leakage medium enters the bearing chamber, causing the failure of lubricating oil or grease, which further affects the bearing. Lubrication and cooling, resulting in damage to bearings and pumps. In the prior art, there are two methods to solve this problem. One is to add a rubber water retaining ring on the shaft sleeve. Since the rubber water retaining ring is easily deformed under the action of centrifugal force or temperature, the The inner diameter becomes larger, and the axial transmission cannot achieve the desired effect. The other is to add a metal water retaining ring on...

AI Technical Summary

Problems solved by technology

[0002] 20-30% of the faults of centrifugal pumps are caused by bearing problems, and the vast majority of bearing faults are due to leakage of the pump seal chamber, and the leakage medium enters the bearing chamber, causing the failure of lubricating oil or grease, which further affects the bearing. Lubrication and cooling, resulting in damage to bearings and pumps

In the prior art, there are two methods to solve this problem. One is to add a rubber water retaining ring on the shaft sleeve. Since the rubber water retaining ring is easily deformed under the action of centrifugal force or temperature, the The inner diameter becomes larger, and the axial transmission cannot achieve the desired effect

The other is to add a metal water retaining ring on the shaft sleeve, and fix it on the shaft sleeve or pump shaft by screws, but the fastening force of the screw is limited, and the screw is prone to failure when the running time is long. It is easy to move along the axial direction and rub against the bearing gland or sealing gland, which will cause damage to the pump in severe cases

Images