CN214788170U

CN214788170U - Bearing assembly for centrifugal compressor

Info

Publication number: CN214788170U
Application number: CN202120926275.3U
Authority: CN
Inventors: 张传胜
Original assignee: Pinsu Machinery Technology Suzhou Co ltd
Current assignee: Pinsu Machinery Technology Suzhou Co ltd
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2021-11-19
Anticipated expiration: 2031-04-30

Abstract

The utility model is suitable for a bearing assembly technical field provides a bearing assembly for centrifugal compressor, including the mounting panel, the inside rotation of mounting panel is connected with the transmission shaft, the left side of mounting panel is installed first fixed plate, the left side of first fixed plate is installed the bearing housing, the left side of bearing housing is installed the second fixed plate; the utility model discloses it can be dead fixedly to have possessed bearing and machine part lock, the idle condition can not appear, and the bearing leakproofness is good, can avoid the dust granule to get into the junction of ball and bearing, can ensure the advantage of the gyration precision of bearing, when the transmission shaft of having solved current bearing carries out fixed rotation with the inner circle bearing, it is easy not hard up and produce idle running phenomenon, reduce transmission efficiency, and ball bearing is when using, its tiny dust granule impurity enters into ball and bearing junction easily, increase the friction between ball and the bearing, influence the problem of gyration precision.

Description

Bearing assembly for centrifugal compressor

Technical Field

The utility model belongs to the technical field of the bearing assembly, especially, relate to a bearing assembly for centrifugal compressor.

Background

The bearing is an important part in the modern mechanical equipment, the main function of the bearing is to support a mechanical rotating body, reduce the friction coefficient in the motion process and ensure the rotation precision of the mechanical rotating body, wherein the rolling bearing is one of the bearings, spherical alloy steel balls are arranged between an inner steel ring and an outer steel ring, the friction force in the power transmission process is reduced and the transmission efficiency of the mechanical power is improved in a rolling mode, the bearing is a key part of a centrifugal refrigeration compressor, the bearing plays an important role in bearing in the operation of the compressor, and the bearing used on the existing centrifugal compressor mainly comprises an oil-free bearing and an oil lubrication rolling bearing.

The outer ring bearing of the rolling bearing needs to be embedded in the mechanical part for use, when a transmission shaft of the existing bearing and an inner ring bearing are fixed and rotated, the phenomenon of easy looseness and idling is generated, the transmission efficiency is reduced, and when the ball bearing is used, fine dust particle impurities of the ball bearing easily enter the joint of the ball bearing and the bearing, the friction between the ball bearing and the bearing is increased, the revolution precision is influenced, therefore, the bearing and the mechanical part can be locked and fixed, the idling condition can not occur, the bearing sealing performance is good, the dust particles can be prevented from entering the joint of the ball bearing and the bearing, and the problem of the revolution precision of the bearing is solved by the bearing assembly for the centrifugal compressor.

SUMMERY OF THE UTILITY MODEL

The utility model provides a bearing assembly for centrifugal compressor aims at solving the problem that provides among the above-mentioned background art.

The utility model is realized in such a way that the bearing assembly for the centrifugal compressor comprises a mounting plate, the inside of the mounting plate is rotatably connected with a transmission shaft, the left side of the mounting plate is provided with a first fixing plate, a bearing cover is arranged on the left side of the first fixing plate, a second fixing plate is arranged on the left side of the bearing cover, the inner part of the second fixing plate is rotatably connected with a sealing structure which is sleeved on the surface of the transmission shaft, an outer ring bearing is arranged in the bearing cover, a ball is arranged on the surface of the inner side of the outer ring bearing, the inner side of the ball is provided with an inner ring bearing, the inside of the second fixed plate is provided with a pressure relief structure, the inside threaded connection of mounting panel has a plurality of fixing bolt, fixing bolt respectively with first fixed plate, bearing housing and second fixed plate threaded connection, the fixed surface of transmission shaft installs spacing.

Preferably, the sealing structure comprises a sealing ring, the surface of the transmission shaft is sleeved with the sealing ring, a limiting ring is fixedly mounted on the outer side of the sealing ring, and the limiting ring is rotatably connected to the inner portion of the second fixing plate.

Preferably, a sealing gasket is bonded on the inner side of the sealing ring, and the sealing gasket is made of rubber.

Preferably, the pressure relief structure comprises a pressure relief hole, the pressure relief hole is formed in the second fixing plate, and a sealing bolt is connected to the inner thread of the pressure relief hole.

Preferably, a pressure relief pad is bonded to the right side of the sealing bolt, and the diameter of the pressure relief pad is the same as that of the sealing bolt.

Preferably, the inner side of the inner ring bearing is provided with a limiting groove, and the limiting groove is in sliding connection with the limiting strip.

Compared with the prior art, the beneficial effects of the utility model are that:

through the mounting panel, the transmission shaft, first fixed plate, the bearing housing, the second fixed plate, sealing structure, outer lane bearing, the ball, the inner circle bearing, the pressure release structure, fixing bolt and spacing setting, make the device possess and to lock bearing and machine part and die fixedly, the idle condition can not appear, and the bearing leakproofness is good, can avoid the dust granule to get into the junction of ball and bearing, can ensure the advantage of the gyration precision of bearing, when having solved the transmission shaft of current bearing and inner circle bearing and having fixed rotation, it is easy not hard up and produce idle running phenomenon, reduce transmission efficiency, and ball bearing is when using, its tiny dust granule impurity enters into ball and bearing junction easily, increase the friction between ball and the bearing, influence the problem of gyration precision.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a schematic sectional view of the structure of the present invention;

FIG. 3 is a perspective view of the present invention;

fig. 4 is a partially enlarged view of a portion a in fig. 2 according to the present invention.

In the figure: 1. mounting a plate; 2. a drive shaft; 3. a first fixing plate; 4. a bearing cage; 5. a second fixing plate; 6. a sealing structure; 61. a seal ring; 62. a limiting ring; 7. an outer ring bearing; 8. a ball bearing; 9. an inner race bearing; 10. a pressure relief structure; 101. a pressure relief vent; 102. a seal bolt; 11. fixing the bolt; 12. a limiting strip; 13. a gasket; 14. a pressure relief pad.

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.

Referring to fig. 1-4, the utility model provides a bearing assembly for centrifugal compressor, which comprises a mounting plate 1, a transmission shaft 2 is rotatably connected inside the mounting plate 1, a first fixing plate 3 is installed on the left side of the mounting plate 1, a bearing housing 4 is installed on the left side of the first fixing plate 3, a second fixing plate 5 is installed on the left side of the bearing housing 4, a sealing structure 6 is rotatably connected inside the second fixing plate 5, the sealing structure 6 is sleeved on the surface of the transmission shaft 2, an outer ring bearing 7 is installed inside the bearing housing 4, a ball 8 is arranged on the surface of the inner side of the outer ring bearing 7, an inner ring bearing 9 is arranged on the inner side of the ball 8, a pressure relief structure 10 is installed inside the second fixing plate 5, a plurality of fixing bolts 11 are connected inside the mounting plate 1 by screw threads, and the fixing bolts 11 are respectively in threaded connection with the first fixing plate 3, the bearing housing 4 and the second fixing plate 5, the surface of the transmission shaft 2 is fixedly provided with a limit strip 12.

In the embodiment, the device is arranged by the mounting plate 1, the transmission shaft 2, the first fixing plate 3, the bearing housing 4, the second fixing plate 5, the sealing structure 6, the outer ring bearing 7, the ball 8, the inner ring bearing 9, the pressure relief structure 10, the fixing bolt 11 and the limit strip 12, the device can lock and fix the bearing and the mechanical part without idle running, the bearing has good sealing performance, can prevent dust particles from entering the joint of the ball and the bearing, can ensure the rotation precision of the bearing, solves the problem that when a transmission shaft of the existing bearing and an inner ring bearing rotate fixedly, easy to loosen and generate idle running phenomenon, reducing transmission efficiency, and when the ball bearing is used, the fine dust particle impurities easily enter the joint of the ball and the bearing, the friction between the ball and the bearing is increased, and the rotation precision is influenced.

Further, the sealing structure 6 comprises a sealing ring 61, the sealing ring 61 is sleeved on the surface of the transmission shaft 2, a limiting ring 62 is fixedly mounted on the outer side of the sealing ring 61, and the limiting ring 62 is rotatably connected inside the second fixing plate 5.

In this embodiment, the seal ring 61 and the stopper ring 62 are provided to facilitate sealing of the bearing and prevent impurities from entering the bearing.

Further, a gasket 13 is bonded to the inner side of the seal ring 61, and the gasket 13 is made of rubber.

In the present embodiment, the provision of the gasket 13 facilitates filling of the gap between the seal ring 61 and the transmission shaft 2, thereby improving the sealing effect.

Further, the pressure relief structure 10 includes a pressure relief hole 101, the pressure relief hole 101 is opened in the second fixing plate 5, and a sealing bolt 102 is connected to the internal thread of the pressure relief hole 101.

In this embodiment, the pressure relief hole 101 and the seal bolt 102 are provided to facilitate pressure relief of the bearing and prevent excessive temperature of the pressure in the bearing.

Further, a pressure relief pad 14 is bonded to the right side of the seal bolt 102, and the diameter of the pressure relief pad 14 is the same as that of the seal bolt 102.

In this embodiment, the pressure relief hole 101 is conveniently sealed by providing the pressure relief pad 14, and impurities are prevented from entering the bearing through the pressure relief hole 101.

Furthermore, a limiting groove is formed in the inner side of the inner ring bearing 9, and the limiting groove is connected with the limiting strip 12 in a sliding mode.

In this embodiment, through setting up the spacing groove, be convenient for cooperate spacing strip 12 to block dead the bearing, prevent idle running.

The utility model discloses a theory of operation and use flow: the ball 8 is embedded inside the outer ring bearing 7 and the inner ring bearing 9 by a user, then the bearing is sleeved on the surface of the transmission shaft 2 by the user, the limiting groove is aligned with the limiting strip 12 to be clamped, then the mounting plate 1, the first fixing plate 3, the bearing housing 4 and the second fixing plate 5 are sequentially sleeved on the surface of the transmission shaft 2, the bearing housing 4 is tightly attached to the surface of the outer ring bearing 7, the sealing ring 61 is mounted inside the second fixing plate 5 and sleeved on the surface of the transmission shaft 2, finally the mounting plate 1, the first fixing plate 3, the bearing housing 4 and the second fixing plate 5 are fixedly mounted through the fixing bolt 11, after the mounting is completed, the mounting plate 1 and the compressor are fixedly mounted, when the transmission shaft 2 rotates, the ball 8 can reduce the friction force between the transmission shaft 2 and the compressor, after the high-speed rotation, the sealing bolt 102 is opened to release the pressure and dissipate the heat inside the bearing, and after heat dissipation and pressure relief are finished, fixing again.

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. A bearing assembly for a centrifugal compressor, comprising a mounting plate (1), characterized in that: the inside of mounting panel (1) is rotated and is connected with transmission shaft (2), first fixed plate (3) are installed in the left side of mounting panel (1), bearing housing (4) are installed in the left side of first fixed plate (3), second fixed plate (5) are installed in the left side of bearing housing (4), the inside of second fixed plate (5) is rotated and is connected with seal structure (6), the surface of transmission shaft (2) is located to seal structure (6) cover, the internally mounted of bearing housing (4) has outer ring bearing (7), the inboard surface of outer ring bearing (7) is equipped with ball (8), the inboard of ball (8) is equipped with inner circle bearing (9), the internally mounted of second fixed plate (5) has pressure relief structure (10), the internal thread of mounting panel (1) is connected with a plurality of fixing bolt (11), fixing bolt (11) respectively with first fixed plate (3), Bearing housing (4) and second fixed plate (5) threaded connection, the fixed surface of transmission shaft (2) installs spacing (12).

2. A bearing assembly for a centrifugal compressor as defined in claim 1, wherein: seal structure (6) include sealing washer (61), the surface of transmission shaft (2) is located to sealing washer (61) cover, the outside fixed mounting of sealing washer (61) has spacing ring (62), spacing ring (62) rotate to be connected in the inside of second fixed plate (5).

3. A bearing assembly for a centrifugal compressor as defined in claim 2, wherein: the inner side of the sealing ring (61) is bonded with a sealing gasket (13), and the sealing gasket (13) is made of rubber.

4. A bearing assembly for a centrifugal compressor as defined in claim 1, wherein: the pressure relief structure (10) comprises a pressure relief hole (101), the pressure relief hole (101) is arranged in the second fixing plate (5), and a sealing bolt (102) is connected to the inner thread of the pressure relief hole (101).

5. A bearing assembly for a centrifugal compressor as defined in claim 4, wherein: and a pressure relief pad (14) is bonded on the right side of the sealing bolt (102), and the diameter of the pressure relief pad (14) is the same as that of the sealing bolt (102).

6. A bearing assembly for a centrifugal compressor as defined in claim 1, wherein: the inner side of the inner ring bearing (9) is provided with a limiting groove, and the limiting groove is connected with a limiting strip (12) in a sliding manner.