CN217401244U

CN217401244U - Bearing structure

Info

Publication number: CN217401244U
Application number: CN202221574556.8U
Authority: CN
Inventors: 丁良尹; 邱志伟
Original assignee: Xi'an Leehua Thermal Technology Co ltd
Current assignee: Xi'an Leehua Thermal Technology Co ltd
Priority date: 2022-06-22
Filing date: 2022-06-22
Publication date: 2022-09-09
Anticipated expiration: 2032-06-22

Abstract

The utility model is suitable for a bearing technical field for the pump provides a bearing structure, including first thrust dish, bearing inner race and second thrust dish, bearing inner race installs epaxially, bearing inner race cover is located on the lateral wall of bearing inner race, first thrust dish is laminated with a terminal surface of bearing inner race and bearing inner race simultaneously, just first thrust dish and the equal fixed mounting of bearing inner race are epaxial, second thrust dish is laminated with another terminal surface of bearing inner race and bearing inner race simultaneously, just bearing inner race and second thrust dish are all fixed at pump body structural. The friction area of the bearing inner ring and the second thrust disc is increased, so that the friction force of the first thrust disc and the end face of the bearing outer ring is reduced, and abrasion is reduced. And after the first thrust disc is worn, the second thrust disc can also axially thrust to play the role of the first thrust disc, so that the service life of the bearing is prolonged.

Description

Bearing structure

Technical Field

The utility model belongs to the technical field of the bearing for the pump, especially, relate to a bearing structure.

Background

In pump applications, especially centrifugal pumps, axial forces are a problem that cannot be bypassed. When the centrifugal pump works, pressure difference exists on two sides of the impeller, and axial force is generated, wherein the direction of the axial force points to the inlet and is parallel to the shaft. Although the balance force can be reduced by a balance design, it cannot be absolutely eliminated.

For a cantilever centrifugal pump, the axial force is borne by the bearing, and if the axial force is too large, the load of the bearing is increased, the power consumption of the pump is increased, the service life of the bearing is shortened, and the bearing is burnt in severe cases.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the utility model is to provide a bearing structure, aim at solving to the cantilever type centrifugal pump, its axial force is born by the bearing, if the axial force is too big, then can make the load increase of bearing, the consumption of pump increases simultaneously, and the life-span of bearing shortens, can cause the problem that the bearing burns out when serious.

The embodiment of the utility model provides a realize like this, a bearing structure, including first thrust dish, bearing inner race and second thrust dish, bearing inner race is installed epaxially, bearing inner race cover is located on the lateral wall of bearing inner race, first thrust dish is laminated with a terminal surface of bearing inner race and bearing inner race simultaneously, just first thrust dish and the equal fixed mounting of bearing inner race are epaxial, second thrust dish is laminated with another terminal surface of bearing inner race and bearing inner race simultaneously, just bearing inner race and second thrust dish are all fixed at pump body structural.

According to the further technical scheme, the first thrust disc and the bearing inner ring are fixedly mounted on the shaft in a key connection mode.

According to the further technical scheme, the first thrust disc, the bearing outer ring, the bearing inner ring and the second thrust disc are all made of ceramic.

According to a further technical scheme, the first thrust disk, the bearing outer ring, the bearing inner ring and the second thrust disk are all made of metal base materials and ceramic coatings.

According to a further technical scheme, the first thrust disc, the bearing outer ring, the bearing inner ring and the second thrust disc are made of one of graphite materials or PEEK engineering plastics and matched with hard metal.

An embodiment of the utility model provides a pair of bearing arrangement, pump during operation, bearing inner race and bearing inner race looks mutual friction, and first thrust dish looks mutual friction with a bearing inner race's a terminal surface, and second thrust dish looks mutual friction with a bearing inner race's a terminal surface. Therefore, the friction area between the bearing inner ring and the second thrust disc is increased, so that the friction force between the first thrust disc and the end face of the bearing outer ring is reduced, and the abrasion is reduced. And after the first thrust disc is worn, the second thrust disc can also axially thrust to play the role of the first thrust disc, so that the service life of the bearing is prolonged.

Drawings

Fig. 1 is a schematic structural diagram of a bearing structure according to an embodiment of the present invention.

In the drawings: a shaft 1; a first thrust disk 2; a bearing outer ring 3; a bearing inner race 4; a second thrust disk 5.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The following detailed description is provided for the specific embodiments of the present invention.

As shown in fig. 1, for the utility model discloses a bearing structure that an embodiment provided, including first thrust dish 2, bearing inner race 3, bearing inner race 4 and second thrust dish 5, bearing inner race 4 is installed on axle 1, 3 covers of bearing inner race are located on the lateral wall of bearing inner race 4, first thrust dish 2 is laminated with a terminal surface of bearing inner race 4 and bearing outer race 3 simultaneously, just first thrust dish 2 and bearing inner race 4 are all through the mode fixed mounting of key-type connection on axle 1, second thrust dish 5 is laminated with another terminal surface of bearing inner race 4 and bearing outer race 3 simultaneously, just bearing outer race 3 and second thrust dish 5 are all fixed on pump body structure.

The embodiment of the present invention provides a second thrust plate 5 is added on the other side of the bearing outer ring 3 and the bearing inner ring 4, so that the second thrust plate is attached to the end faces of the bearing outer ring 3 and the bearing inner ring 4, and corresponds to the first thrust plate 2. The second thrust disc 5 and the bearing outer ring 3 are both fixed on the end cover and are non-rotating bearing parts, and the first thrust disc 2 and the bearing inner ring 4 are connected on the shaft 1 through keys and are rotating bearing parts. When the pump works, the bearing outer ring 3 and the bearing inner ring 4 rub against each other, the first thrust disk 2 rubs against one end face of the bearing outer ring 3, and the second thrust disk 5 rubs against one end face of the bearing inner ring 4. The friction area of the bearing inner ring 4 and the second thrust disc 5 is increased, so that the friction force of the end faces of the first thrust disc 2 and the bearing outer ring 3 is reduced, and the abrasion is reduced. And after the first thrust disc 2 is worn, the second thrust disc 5 can also axially thrust to play the role of the first thrust disc 2, so that the service life of the bearing is prolonged.

As an optimized embodiment of the utility model, the material of first thrust dish 2, bearing inner race 3, bearing inner race 4 and second thrust dish 5 can be for pottery, can add ceramic coating for metal substrate, can be for arbitrary collocation of one of graphite material or PEEK engineering plastics and hard metal.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a bearing structure, its characterized in that, includes first thrust dish, bearing inner race and second thrust dish, the bearing inner race is installed epaxial, the bearing inner race cover is located on the lateral wall of bearing inner race, first thrust dish is laminated with a terminal surface of bearing inner race and bearing inner race simultaneously, just first thrust dish and the equal fixed mounting of bearing inner race are epaxial, second thrust dish is laminated with another terminal surface of bearing inner race and bearing inner race simultaneously, just bearing inner race and second thrust dish are all fixed on pump body structure.

2. The bearing structure of claim 1 wherein the first thrust disk and the inner bearing race are each fixedly attached to the shaft by a keyed connection.

3. The bearing structure of claim 1, wherein the first thrust disk, the bearing outer race, the bearing inner race, and the second thrust disk are all made of ceramic.

4. The bearing structure of claim 1, wherein the first thrust disk, the bearing outer race, the bearing inner race, and the second thrust disk are all made of a metal substrate with a ceramic coating.

5. The bearing structure of claim 1, wherein the first thrust disk, the outer bearing ring, the inner bearing ring and the second thrust disk are made of one of graphite or PEEK engineering plastics and matched with hard metal.