CN211116757U

CN211116757U - Bearing seat structure of magnetic pump

Info

Publication number: CN211116757U
Application number: CN201921917461.XU
Authority: CN
Inventors: 刘艳
Original assignee: Shanghai Bainuo Pumps And Valves Co ltd
Current assignee: Shanghai Bainuo Pumps And Valves Co ltd
Priority date: 2019-11-08
Filing date: 2019-11-08
Publication date: 2020-07-28
Anticipated expiration: 2029-11-08

Abstract

The utility model relates to a magnetic drive pump bearing frame structure, including the bearing frame, set up the bearing housing mounting hole at bearing frame both ends respectively to and inlay the bearing housing of locating in the bearing housing mounting hole, the edge of bearing housing mounting hole is along radially inwards being equipped with the thin wall limit, and the bearing frame passes through the thin wall limit sealed with the bearing housing border, is equipped with the jack catch on the medial surface on thin wall limit, and the locating hole has been seted up at the edge of bearing housing, and the bearing frame passes through jack catch and locating hole and bearing housing looks joint. Compared with the prior art, the utility model discloses can multi-direction location, control bearing housing axial and radial motion guarantee the bearing frame and be connected with the stable of bearing housing, in addition, change the mounting means of bearing housing into clearance fit installation by interference fit installation, make course of working and assembling process swift more, convenient, the machining precision is changed in control to it is higher to make the concentricity between bearing frame and the bearing housing.

Description

Bearing seat structure of magnetic pump

Technical Field

The utility model belongs to the technical field of the bearing frame, a magnetic drive pump bearing frame structure is related to.

Background

The bearing seat of the magnetic pump is an important component for supporting an inner rotor of the magnetic pump, and a bearing sleeve is usually arranged at an inner hole of the bearing seat in order to reduce friction between a main shaft of the pump and the bearing seat. The bearing seat and the bearing sleeve are usually installed in an interference fit mode, namely, when the bearing sleeve is installed, the bearing seat is firstly baked at high temperature, heated and expanded, then the bearing sleeve and the fixing pin are placed, and a bearing body is formed after cooling and shrinking. However, such installation methods often cause safety problems to occur in the use site of the magnetic pump, especially in the conveying process of high-temperature media, the high-temperature media cause the bearing seat and the bearing sleeve to be heated and expanded, the bearing seat and the bearing sleeve are separated after being heated because the heating expansion coefficient of the bearing seat is higher than that of the bearing sleeve, when the pump is stopped and operates again, the axial displacement is generated by the bearing sleeve, so that the operation of a main shaft of the magnetic pump is blocked, and the bearing sleeve is cracked when the pump is serious, so that larger equipment faults are caused. Meanwhile, the installation process of the bearing seat and the bearing sleeve with high difficulty brings great inconvenience to daily maintenance of equipment.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a magnetic drive pump bearing frame structure in order to overcome the defect that above-mentioned prior art exists for avoid bearing frame and bearing housing to be heated and warp, make the bearing housing take place axial displacement and radial displacement, cause the phenomenon of magnetic drive pump damage trouble.

The purpose of the utility model can be realized through the following technical scheme:

the utility model provides a magnetic pump bearing frame structure, includes the bearing frame, sets up the bearing housing mounting hole at bearing frame both ends respectively to and inlay the bearing housing of locating in the bearing housing mounting hole, the edge of bearing housing mounting hole along radial inside be equipped with the thin wall limit of the marginal looks adaptation of bearing housing, the bearing frame pass through the thin wall limit sealed with the bearing housing border, the medial surface on thin wall limit on be equipped with the jack catch, the edge of bearing housing set up the locating hole with jack catch looks adaptation, the bearing frame pass through jack catch and locating hole and bearing housing looks joint.

When the bearing seat is manufactured, the thin-wall edge can be arranged outwards, and after the bearing sleeve is installed, the thin-wall edge is bent inwards, so that the thin-wall edge is attached to the edge of the bearing sleeve, and the bearing sleeve is further fixed. The bearing seat is fixedly connected with the bearing sleeve through the edge rolling seal of the thin-wall edge so as to limit the axial displacement between the bearing seat and the bearing sleeve, and compared with other anti-moving structures of the bearing sleeve, the anti-moving structure simplifies the manufacturing process of the bearing seat and further improves the production efficiency.

The clamping jaws and the positioning holes are used for avoiding radial displacement or rotation between the bearing seat and the bearing sleeve.

As a preferable technical scheme, the clamping jaws are fan-shaped clamping jaws, and the circle centers of the fan-shaped clamping jaws are positioned at the bending positions of the thin-wall edges.

Furthermore, the edge of the thin wall is arranged at the edge of the mounting hole of the bearing sleeve at a circumferential gap, so that the adjacent thin wall edges are prevented from being overlapped after being bent.

Furthermore, the bearing sleeve is in clearance fit connection with the bearing sleeve mounting hole.

Furthermore, a pin positioning assembly is arranged between the bearing seat and the bearing sleeve.

Furthermore, the pin positioning assembly comprises a bearing seat pin hole arranged at the bottom of the bearing sleeve mounting hole, a bearing sleeve pin hole arranged at the bottom of the bearing sleeve, and a pin arranged between the bearing seat pin hole and the bearing sleeve pin hole.

The two ends of the pin are respectively embedded in the pin hole of the bearing seat and the pin hole of the bearing sleeve, and the bearing seat is fixedly connected with the bearing sleeve through the pin, so that the bearing seat and the bearing sleeve are prevented from generating radial displacement or rotation.

The bearing sleeve and the bearing seat are installed in a matched mode through the tightening screw, the screw is usually arranged on the side wall of the bearing seat and matched with the side wall of the bearing sleeve, the tightening screw is prone to loosening and falling under the high-temperature condition of the structure, the bearing sleeve rotates in the bearing seat, due to the fact that expansion coefficients of the metal bearing seat and the silicon carbide bearing sleeve are different, interference fit is prone to cracking, the matched structure using the tightening screw is only suitable for the condition with low temperature, the pin fixing can be suitable for the high-temperature working condition, the bearing sleeve is guaranteed not to rotate in the circumferential direction, the structure is wider in applicability, and the service life of the structure is longer than that of the tightening screw.

Furthermore, a bearing seat through hole is formed between the bearing sleeve mounting holes, and the bearing seat structure further comprises a lubricating circulation assembly communicated with the bearing seat through hole.

Furthermore, the lubricating circulation assembly comprises a circulation hole formed in the side wall of the bearing seat and a lubricating groove formed in the bearing sleeve, and the circulation hole and the lubricating groove are communicated with the through hole of the bearing seat respectively.

Furthermore, the lubricating grooves comprise axial lubricating grooves axially arranged on the inner wall of the bearing sleeve and radial lubricating grooves radially arranged on the end face of the bearing sleeve, and two ends of each radial lubricating groove are respectively communicated with the axial lubricating grooves and the bearing seat through holes.

One end of the circulation hole is communicated with the vicinity of the edge of the impeller in the pump cavity of the magnetic pump, when the magnetic pump works, the impeller rotates at high speed to generate a high pressure area at the edge, and fluid in the high pressure area enters the bearing seat through the circulation hole, flows along the radial lubricating groove and the axial lubricating groove on the bearing sleeve and finally returns to the impeller. Make the fluid fully lubricate magnetic drive pump friction pack through the lubrication cycle subassembly to take away frictional heat fast, avoid making the bearing housing high temperature and then leading to the cracked condition of bearing housing because of the friction, and be favorable to making bearing housing life improve by a wide margin.

Furthermore, the edge of the bearing seat is provided with a connecting through hole for being fixedly connected with the magnetic pump component.

The working principle is as follows: the utility model discloses become the whole bearing housing, bearing frame and adapting unit between them, install the bearing housing in the bearing frame with clearance fit's mode in production, through the border technology based on thin wall limit on the bearing frame, make bearing housing and bearing frame axial closely cooperate, avoid the bearing housing to produce the axial float; the clamping jaws on the thin-wall edges and the positioning holes in the bearing sleeve are matched, and the pin is used for limiting the bearing sleeve and the bearing seat from radial relative movement or rotation; and through the circulation hole, radial lubrication groove and the axial lubrication groove that are linked together, make the fluid of magnetic force pump delivery flow through bearing housing and bearing frame fast, take away the heat that produces because of quick friction between bearing housing and the pump shaft, avoid the bearing housing because of the high cracked condition that leads to of high temperature, and then improve the life of bearing housing.

Compared with the prior art, the utility model has the characteristics of it is following:

1) when the conventional bearing sleeve is in a high-temperature condition, the clearance between the bearing sleeve and the bearing seat is easily increased due to different expansion coefficients of the metal bearing seat and the bearing sleeve, so that the bearing sleeve and the bearing seat fall off;

2) scattered multiple components are integrated into an assembly structure, and the assembly structure can be installed or maintained in an integral replacement mode, so that the convenience of the early installation process and the later maintenance is improved;

3) the installation mode of the bearing sleeve is changed from interference fit installation to clearance fit installation, so that the machining process and the assembling process are quicker and more convenient, the machining precision is easier to control, and the concentricity between the bearing seat and the bearing sleeve is higher;

4) the bearing seat circulating hole is directly communicated with the bearing sleeve lubricating groove, so that heat energy generated by friction can be rapidly taken away, a friction part can be lubricated, and the service life can be prolonged.

Drawings

Fig. 1 is a top view of a magnetic pump bearing block structure of the present invention;

fig. 2 is a right side sectional view of a magnetic pump bearing block structure of the present invention;

FIG. 3 is a top view of the bearing housing;

FIG. 4 is a right side cross-sectional view of the bearing housing;

FIG. 5 is a right side cross-sectional view of the bearing housing prior to installation of the bearing housing;

FIG. 6 is a front view of a thin wall edge provided with jaws;

FIG. 7 is a right side view of the thin wall edge provided with the jaws;

the notation in the figure is:

1-bearing sleeve, 101-bearing sleeve pin hole, 102-radial lubrication groove, 103-axial lubrication groove, 104-locating hole, 2-bearing seat, 201-connecting through hole, 202-bearing seat pin hole, 203-thin wall edge, 204-circulating hole, 205-claw and 3-pin.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

Example (b):

as shown in fig. 1 and 2, a magnetic pump bearing block structure includes a bearing block 2 as shown in fig. 5, bearing sleeve mounting holes respectively opened at two ends of the bearing block 2, and a bearing sleeve 1 as shown in fig. 3 and 4 embedded in the bearing sleeve mounting hole, a thin-wall edge 203 adapted to an edge of the bearing sleeve 1 is radially inward provided at an edge of the bearing sleeve mounting hole, the bearing block 2 is edge-rolled and sealed with the bearing sleeve 1 through the thin-wall edge 203, as shown in fig. 5, the thin-wall edge 203 is circumferentially spaced and arranged at the edge of the bearing sleeve mounting hole, as shown in fig. 6 and 7, a claw 205 is provided on an inner side surface of the thin-wall edge 203, a positioning hole 104 adapted to the claw 205 is provided at an edge of the bearing sleeve 1, and the bearing block 2 is clamped with the bearing sleeve 1 through the claw 205 and the positioning hole 104.

The bearing sleeve 1 is connected with the bearing sleeve mounting hole in a clearance fit mode.

As shown in fig. 2, a pin positioning assembly is further disposed between the bearing seat 2 and the bearing sleeve 1. The pin positioning assembly comprises a bearing seat pin hole 202 arranged at the bottom of the bearing sleeve mounting hole as shown in fig. 6, a bearing sleeve pin hole 101 arranged at the bottom of the bearing sleeve 1 as shown in fig. 4, and a pin 3 arranged between the bearing seat pin hole 202 and the bearing sleeve pin hole 101.

A bearing seat through hole is arranged between the bearing sleeve mounting holes, and the bearing seat structure further comprises a lubricating circulation assembly communicated with the bearing seat through hole. The lubricating circulation component comprises a circulation hole 204 arranged on the side wall of the bearing seat 2 and a lubricating groove arranged on the bearing sleeve 1, and the circulation hole 204 and the lubricating groove are respectively communicated with the through hole of the bearing seat. As shown in fig. 3 and 4, the lubrication grooves include an axial lubrication groove 103 axially disposed on the inner wall of the bearing sleeve 1, and a radial lubrication groove 102 radially disposed on the end surface of the bearing sleeve 1, and both ends of the radial lubrication groove 102 are respectively communicated with the axial lubrication groove 103 and the bearing seat through hole.

As shown in fig. 5, the edge of the bearing seat 2 is opened with a connection through hole 201 for fixedly connecting with the magnetic pump component.

The working principle is as follows: the bearing sleeve structure integrates the bearing sleeve 1, the bearing seat 2 and a connecting part of the bearing sleeve 1 and the bearing seat 2, the bearing sleeve 1 is arranged in the bearing seat 2 in a clearance fit mode in production, and the bearing sleeve 1 is tightly matched with the bearing seat 2 in the axial direction through a trimming process based on a thin-wall edge 203 on the bearing seat 2, so that the bearing sleeve 1 is prevented from generating axial movement; the claw 205 and the positioning hole 104 which are used in a matched manner and the pin 3 limit the bearing sleeve 1 and the bearing seat 2 from moving or rotating in a radial direction; and through the circulation hole 204, the radial lubrication groove 102 and the axial lubrication groove 103 which are communicated, the fluid delivered by the magnetic pump can rapidly flow through the bearing sleeve 1 and the bearing seat 2, the heat generated between the bearing sleeve 1 and the pump shaft due to rapid friction is taken away, the situation that the bearing sleeve 1 is cracked due to overhigh temperature is avoided, and the service life of the bearing sleeve 1 is further prolonged.

The embodiments described above are intended to facilitate the understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention according to the disclosure of the present invention.

Claims

1. The utility model provides a magnetic pump bearing frame structure, this bearing frame structure includes bearing frame (2), sets up the bearing housing mounting hole at bearing frame (2) both ends respectively to and inlay bearing housing (1) of locating in the bearing housing mounting hole, its characterized in that, the edge of bearing housing mounting hole radially inwards be equipped with thin wall limit (203) of the marginal looks adaptation of bearing housing (1), bearing frame (2) through thin wall limit (203) with bearing housing (1) border sealing, the medial surface of thin wall limit (203) on be equipped with jack catch (205), the edge of bearing housing (1) set up locating hole (104) with jack catch (205) looks adaptation, bearing frame (2) through jack catch (205) and locating hole (104) and bearing housing (1) looks joint.

2. A magnetic pump bearing block structure according to claim 1, characterized in that the thin-walled rim (203) is arranged at the edge of the bearing housing mounting hole along the circumferential gap.

3. A magnetic pump bearing block structure according to claim 1, characterized in that the bearing housing (1) is in clearance fit connection with the bearing housing mounting hole.

4. A magnetic pump bearing block structure according to claim 1, characterized in that a pin locating component is further provided between the bearing block (2) and the bearing sleeve (1).

5. A magnetic pump bearing block structure according to claim 4, characterized in that the pin positioning assembly comprises a bearing block pin hole (202) formed at the bottom of the bearing sleeve mounting hole, a bearing sleeve pin hole (101) formed at the bottom of the bearing sleeve (1), and a pin (3) formed between the bearing block pin hole (202) and the bearing sleeve pin hole (101).

6. The magnetic pump bearing block structure of claim 1, wherein a bearing block through hole is formed between the bearing sleeve mounting holes, and the bearing block structure further comprises a lubrication circulation assembly communicated with the bearing block through hole.

7. A magnetic pump bearing block structure according to claim 6, characterized in that the lubrication circulation assembly comprises a circulation hole (204) formed in the side wall of the bearing block (2) and a lubrication groove formed in the bearing sleeve (1), and the circulation hole (204) and the lubrication groove are respectively communicated with the bearing block through hole.

8. The magnetic pump bearing block structure according to claim 7, wherein the lubrication grooves comprise an axial lubrication groove (103) axially disposed on the inner wall of the bearing sleeve (1) and a radial lubrication groove (102) radially disposed on the end face of the bearing sleeve (1), and both ends of the radial lubrication groove (102) are respectively communicated with the axial lubrication groove (103) and the bearing block through hole.

9. A magnetic pump bearing block structure according to claim 1, characterized in that the edge of the bearing block (2) is provided with a connecting through hole (201) for fixedly connecting with a magnetic pump component.