CN218953625U

CN218953625U - Waterproof and dustproof protection structure of bearing body

Info

Publication number: CN218953625U
Application number: CN202223444176.5U
Authority: CN
Inventors: 毛永杰; 王笑奕; 周梓卫; 董泽
Original assignee: Shenyang Kaiquan Petrochemical Pump Co ltd
Current assignee: Shenyang Kaiquan Petrochemical Pump Co ltd
Priority date: 2022-12-22
Filing date: 2022-12-22
Publication date: 2023-05-02
Anticipated expiration: 2032-12-22

Abstract

The utility model relates to a waterproof and dustproof protection structure of a bearing body, which comprises the following components: the device comprises a base body, a shaft sheath, an outer ring retainer ring, an inner ring baffle ring and a liquid discharge pipe, wherein an annular groove is formed in the left end face of the base body; the shaft sheath is in clearance sliding fit with the base body, a ring table cover is arranged on the outer side of the shaft sheath, a T-shaped table edge is arranged at the tail end of the ring table cover, the T-shaped table edge is arranged in the ring groove, and the outer ring retainer ring and the inner ring retainer ring are respectively in threaded connection with the ring groove; the liquid discharge pipe is connected with the lower end of the base body in a threaded connection mode. The umbrella-shaped shaft sheath can protect the shaft in two directions, namely the axial direction and the radial direction, prevents water and dust from entering the bearing, has good protection performance, can drain the accumulated water through the liquid drain pipe through the annular groove, and ensures that the bearing of the pump can be well sealed and protected in working and non-working states.

Description

Waterproof and dustproof protection structure of bearing body

Technical Field

The utility model belongs to the technical field of centrifugal pumps, and particularly relates to a waterproof and dustproof protection structure of a bearing body.

Background

In recent years, centrifugal pumps have a very wide range of applications, and the bearing housing of the centrifugal pump is adjacent to the shaft seal end of the pump as the most important component for maintaining the reliable operation of the rotor, and once the shaft seal leaks or the pipeline of the pump leaks, water may be scattered onto the bearing housing, and if the waterproof measure of the bearing housing is not effective, water may enter the bearing housing, thereby causing grease or lubricating oil emulsion, causing failure of bearing lubrication, and causing damage or shutdown of the pump.

The prior art discloses a bearing anti-fouling device and be equipped with bearing anti-fouling device's centrifugal pump, and the publication number is: CN103352865B, its bearing's protective structure is that a dirt blocking plate is put on the outside of bearing fender cover and rotates along with the pump shaft, its dirt blocking plate only can carry out the shielding of a direction to the axis direction of pump shaft and throws away the splash meson through centrifugal force's effect, but still have great distance between dirt blocking plate and the bearing body, still have partial aqueous humor to flow into between dirt blocking plate and the bearing body after water is thrown away, lead to a small amount of leakage meson can enter into in the bearing body, can't play effectual guard action to the bearing, easily cause the emulsification of lubricating grease, influence the lubrication effect of bearing.

Disclosure of Invention

The utility model provides a waterproof and dustproof protection structure of a bearing body, which aims to perform good sealing protection on the bearing of a centrifugal pump during both working and non-working of the pump, prevent grease from being emulsified due to water inflow in the bearing body and ensure the service life of the bearing body to be prolonged.

The technical scheme adopted for solving the technical problems is as follows: waterproof dustproof protective structure of bearing body, its characterized in that includes:

the bearing table is arranged on the base body, an outer cover is arranged on the outer side of the bearing table, and a ring groove is formed in the left end face of the base body;

the shaft sheath is in clearance type sliding fit with the base body, a ring table cover is arranged on the outer side of the shaft sheath, a T-shaped table edge is arranged at the tail end of the ring table cover, and an outer guard edge is arranged on the upper side of the T-shaped table edge;

an outer ring retainer ring which is in threaded connection with the outer side of the ring groove of the base body, and is in clearance fit with the T-shaped table ring edge and the outer guard edge;

the inner ring baffle ring is in threaded connection with the inner side of the ring groove of the base body, and is in clearance fit with the T-shaped table ring edge;

the liquid discharge pipe is connected with the lower end of the base body in a threaded connection mode, and a one-way liquid flow valve is arranged on the liquid discharge pipe.

Preferably, the base body is conical ring-shaped, the outer cover is connected with the base body in a bolting way, and the outer cover is provided with an oil filling hole cover.

Preferably, a sealing ring groove is arranged in the central hole in the base body, and a sealing ring is arranged in the sealing ring groove.

Preferably, the annular groove is annular on the end face of the base body, and the groove surface of the annular groove is a smooth surface formed by polishing.

Preferably, the annular table cover and the shaft sheath are integrally manufactured, and the annular table cover, the T-shaped table edge and the outer guard edge are distributed outside the shaft sheath in an annular umbrella shape.

Preferably, the T-shaped table ring edge is disposed in the ring groove, the outer ring retainer ring and the inner ring baffle ring are disposed at the outer sides of the T-shaped table ring edge, the outer ring retainer ring and the inner ring baffle ring are in threaded connection with the ring groove, and the outer ring retainer ring and the inner ring baffle the T-shaped table ring edge in the ring groove.

Preferably, a square chute is arranged on the end face of the outer ring retainer ring, and the outer guard edge is arranged in the square chute in a clearance fit manner.

Preferably, a liquid flowing ring cavity is arranged between the T-shaped table ring edge and the ring groove, the liquid draining pipe is arranged at the lower end of the liquid flowing ring cavity, and the liquid draining pipe is communicated with the liquid flowing ring cavity in a pipeline mode.

The beneficial effects of the utility model are as follows: the umbrella-shaped shaft sheath can protect the shaft in two directions, namely the axial direction and the radial direction, prevents water and dust from entering the bearing, has good protection performance, and the annular groove is internally provided with the liquid flowing annular cavity which can discharge the accumulated water in one direction through the liquid discharge pipe, so that the bearing of the pump can be well sealed and protected in working and non-working states.

Drawings

FIG. 1 is a schematic diagram of the front view of the present utility model;

FIG. 2 is an enlarged schematic view of a portion of FIG. 1 in accordance with the present utility model;

FIG. 3 is a schematic view of the present utility model partially enlarged at B of FIG. 2;

FIG. 4 is a schematic left-hand view of FIG. 2 of the present utility model;

FIG. 5 is an enlarged schematic view of a portion of FIG. 2 of the present utility model;

FIG. 6 is a schematic diagram of the left-hand appearance of FIG. 5 in accordance with the present utility model;

FIG. 7 is a schematic cross-sectional view taken along the direction A-A of FIG. 5 in accordance with the present utility model;

FIG. 8 is a schematic view of the front view of the shaft sheath of the present utility model;

FIG. 9 is a schematic view of the front appearance of the shaft sheath of the present utility model;

FIG. 10 is a schematic view of the left side appearance of the shaft sheath of the present utility model;

in the figure: the device comprises a base body 1, a bearing table 11, an outer cover 12, a 121-oil filling hole cover 13, a ring groove 14, a sealing ring groove 15, a sealing ring 15, a 2-shaft sheath 21, a ring table cover 22, a T-shaped table edge 23, an outer guard edge 3, an outer ring retainer ring 31, a square chute 4, an inner ring retainer ring 5, a liquid discharge pipe 51, a one-way liquid flow valve 6, a liquid flow ring cavity 7, a pump shaft 71, a pump body 72 and a packing seal.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged in a variety of different configurations. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present utility model.

Referring to fig. 1 to 7, a waterproof and dustproof protection structure for a bearing body comprises a base body 1, wherein the base body 1 is in a conical ring shape, the base body 1 is connected with a pump body 71 in a bolting way, a pump shaft 7 in the middle of the pump body 71 is a packing seal 72, a bearing table 11 is arranged on the base body 1, a bearing is arranged in the bearing table 11, and the pump shaft 7 is tightly pressed by a nut through a bearing sleeve. The outside of bearing platform 11 is provided with enclosing cover 12, the outside of enclosing cover 12 with the bearing covers the protection, enclosing cover 12 with base body 1 bolt sealing connection, be provided with the filler cap 121 on the enclosing cover 12, can carry out the injection of lubricating oil to the bearing through filler cap 121, filler cap 121 with the enclosing cover 12 bolt connection.

Referring to fig. 1, 2, 4, 5 and 7, a ring groove 13 is formed on the inner end surface of the base body 1, the ring groove 13 is in a ring groove shape on the end surface of the base body 1, the ring groove 13 is turned on the end surface of the base body 1, and the groove surface of the ring groove 13 is ground and polished to a smoother surface. The inner hole of the base body 1 is provided with a sealing ring groove 14, the sealing ring groove 14 is turned on the inner hole wall of the base body 1, and a sealing ring 15 can be arranged in the sealing ring groove 14. The shaft sheath 2 is sleeved on the pump shaft 7 in a pin-key type connection, a rubber ring can be adopted for sealing between the shaft sheath 2 and the pump shaft 7, and the shaft sheath 2 is in clearance fit with an inner hole of the base body 1 and is sealed through a rubber sealing ring 15. Namely, the outer side of the bearing is sealed, covered and protected by the outer cover 12, and the inner side of the bearing is sealed and protected by the two sealing rings 15.

As an example, as shown in fig. 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10, a cylindrical annular table cover 21 is arranged outside the shaft sheath 2, the annular table cover 21 is integrally formed with the shaft sheath 2, the tail end of the annular table cover 21 is provided with a T-shaped table edge 22, and an annular outer guard edge 23 protruding obliquely is arranged on the upper side of the T-shaped table edge 22; the annular table cover 21, the T-shaped table edge 22 and the outer guard edge 23 are distributed outside the shaft sheath 2 in an annular umbrella shape, and the annular table cover 21, the T-shaped table edge 22, the outer guard edge 23 and the shaft sheath 2 are integrally turned in a turning mode. The shaft sheath 2 is in clearance fit with the base body 1, the annular table cover 21 completely covers the gap between the shaft sheath 2 sealed by the sealing ring 15 and the base body 1 in the axial direction and the radial direction, and the T-shaped table ring 22 is arranged in the annular groove 13 on the end surface of the base body 1 in a clearance fit mode; the outer ring retainer ring 3 and the inner ring baffle ring 4 can be respectively in threaded sealing connection with the ring groove 13, the outer ring retainer ring 3 and the inner ring baffle ring 4 keep off the T-shaped table ring edge 22 in the ring groove 13, the outer ring retainer ring 3 and the inner ring baffle ring 4 are respectively arranged on the inner side and the outer side of the T-shaped table ring edge 22, and the T-shaped table ring edge 22 is respectively in clearance fit with the outer ring retainer ring 3 and the inner ring baffle ring 4. The end face of the outer ring retainer ring 3 is provided with a square chute 31, the Fang Huacao 31 is turned on the end face of the outer ring retainer ring 3, the outer guard edge 23 outside the shaft sheath 2 can be inserted into the square chute 31, and the outer guard edge 23 can be in clearance fit with the Fang Huacao.

In the embodiment of the utility model, the annular table cover 21 of the shaft sheath 2 is shielded outside the sealing ring 15 to cover and protect the shaft sheath 2 and the base body 1, and the T-shaped table edge 22 of the shaft sheath 2 can be placed in the annular groove 13 in a clearance fit manner, and the convex hook edge of the T-shaped table edge 22 can shield and protect liquid flow, so that splashed liquid flow can not flow into the annular groove 13; meanwhile, the outer guard edge 23 of the shaft sheath 2 can be inserted into the square chute 31 for secondary shielding protection, so that splashed water is prevented from entering the annular groove 13, and the phenomenon that liquid accumulation does not occur in a gap at the sealing ring 15 is ensured. The liquid discharge pipe 5 can be connected to the lower end of the base body 1 in a threaded manner, a liquid flowing annular cavity 6 can be formed between the T-shaped table annular edge 22 and the annular groove 13, the liquid discharge pipe 5 can be arranged at the lower end of the liquid flowing annular cavity 6, and the liquid discharge pipe 5 can be communicated with the liquid flowing annular cavity 6 in a pipeline manner; when the water liquid is formed in the liquid flowing ring cavity 6, the water liquid flows downwards to the liquid discharge pipe 5 and is discharged through the liquid discharge pipe 5; the liquid discharge pipe 5 can be further provided with a one-way liquid flow valve 51, the one-way liquid flow valve 51 can be a plastic check valve sold by Qiqi hardware in new area of the ocean river in the dormitory, or a one-way valve with the specification of 12mm and oil resistance and ozone resistance, water can be discharged outwards from the liquid flow annular cavity 6 through the one-way liquid flow valve 51, and external water cannot flow into the liquid flow annular cavity 6 through the blocking of the one-way liquid flow valve 51.

In the embodiment of the present utility model, when the packing seal 72 between the base body 1 and the pump body 71 leaks, the leaked liquid flow can be discharged through the liquid outlet at the lowest end of the base body 1, so that a small amount of liquid flow is splashed in the base body 1. The splashed liquid flow firstly can be blocked in two directions of the axial direction and the radial direction by the annular table cover 21 and the outer guard edge 23, and when the annular table cover 21 and the outer guard edge 23 rotate along with the pump shaft 7, the water liquid can be thrown out by centrifugal force and cannot enter the annular table cover 21. When the pump shaft 7 is stopped and rotates, the packing seal 72 leaks, a large amount of leaked liquid flow can be discharged through the liquid outlet at the lowest end of the base body 1, the splashed liquid flow can fall onto the annular table cover 21 and the outer guard edge 23, little liquid flow can enter the T-shaped table annular edge 22 through a gap between the outer guard edge 23 and the square sliding groove 31, the T-shaped table annular edge 22 is a raised barb-shaped annular edge, small amount of invasive liquid flow can be effectively blocked, the water liquid can not enter the annular table cover 21 in a secondary protection mode, the liquid flow annular cavity 6 between the T-shaped table annular edge 22 and the annular groove 13 is a smooth cavity, accumulated water drops can be discharged outwards through the one-way liquid flow valve 51, the sealing ring 15 between the base body 1 and the shaft sheath 2 is effectively prevented from being invaded by the water, and the waterproof and dustproof protection performance is excellent, and thus the bearing has a good protection effect. The umbrella-shaped shaft sheath 2 is adopted to protect the shaft in two directions, namely the axial direction and the radial direction, so that water and dust are prevented from entering the bearing, the protection performance is good, the liquid flowing ring cavity 6 is reserved in the ring groove 13, the accumulated water can be discharged in one direction through the liquid discharge pipe 5 by the liquid flowing ring cavity 6, and the bearing of the pump can be well sealed and protected in the working state and the non-working state.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that changes and substitutions are within the scope of the present utility model. Therefore, the protection scope of the utility model should be mainly that of the claims.

Claims

1. Waterproof dustproof protective structure of bearing body, its characterized in that includes:

2. The waterproof and dustproof protection structure for a bearing body according to claim 1, wherein: the base body is conical ring-shaped, the outer cover is connected with the base body in a bolting mode, and the outer cover is provided with an oil filling hole cover.

3. The waterproof and dustproof protection structure for the bearing body according to claim 2, wherein: the base is characterized in that a sealing ring groove is formed in a central hole in the base body, and a sealing ring is arranged in the sealing ring groove.

4. The waterproof and dustproof protection structure for a bearing body according to claim 1, wherein: the annular groove is annular on the end face of the base body, and the surface of the annular groove is a smooth surface formed by polishing.

5. The waterproof and dustproof protection structure for a bearing body according to claim 1, wherein: the annular table cover and the shaft sheath are integrally manufactured, and the annular table cover, the T-shaped table edge and the outer guard edge are distributed outside the shaft sheath in an annular umbrella shape.

6. The waterproof and dustproof protection structure for a bearing body according to claim 5, wherein: the T-shaped table ring edge is arranged in the ring groove, the outer ring retainer ring and the inner ring baffle ring are respectively arranged on the outer side of the T-shaped table ring edge, the outer ring retainer ring and the inner ring baffle ring are respectively in threaded connection with the ring groove, and the outer ring retainer ring and the inner ring baffle the T-shaped table ring edge in the ring groove.

7. The waterproof and dustproof protection structure for a bearing body according to claim 5, wherein: the end face of the outer ring retainer ring is provided with a square chute, and the outer guard edge is arranged in the square chute in a clearance fit mode.

8. The waterproof and dustproof protection structure for a bearing body according to claim 6, wherein: the T-shaped table ring edge is provided with a liquid flowing ring cavity between the T-shaped table ring edge and the ring groove, the liquid draining pipe is arranged at the lower end of the liquid flowing ring cavity, and the liquid draining pipe is communicated with the liquid flowing ring cavity in a pipeline mode.