CN219452488U - Low-temperature immersed pump sealing assembly - Google Patents

Abstract

The utility model discloses a sealing component of a low-temperature immersed pump, which comprises a bearing, a sealing element and a mounting ring, wherein the sealing element is sleeved outside the bearing, the bottom of the sealing element is fixedly connected with a bottom plate, the mounting ring is sleeved at the bottom of the bearing, positioning grooves are formed in two sides of the top of the mounting ring, a through hole is formed in the bottom plate, and a mounting bolt is inserted into the through hole. This low temperature immersed pump seal assembly is through being provided with sealing member, the collar, the bottom plate, mounting bolt and locating piece, during the use, the collar is installed in the pump body, with the sealing member cover outside the bearing, move down the sealing member for the bottom plate bottom is laminated with the collar, the locating piece inlay card is inside the constant head tank this moment, accomplish first step location, later pass inside the through-hole with the mounting bolt, utilize mounting tool, with the rotatory installation of mounting bolt inside the collar, accomplish the assembly to the sealing member, ensure the steadiness of using, what the solution is the problem that the steadiness of sealing member assembly is not enough.

Description

Low-temperature immersed pump sealing assembly

Technical Field

The utility model relates to the technical field of sealing elements, in particular to a sealing component of a low-temperature immersed pump.

Background

The low-temperature immersed pump is a high-speed centrifugal liquid pump used in a low-temperature environment, a low-temperature medium comprises liquefied natural gas, liquid nitrogen and liquid argon, the low-temperature immersed pump is not easy to leak in the working process, a sealing ring is required to be assembled on a bearing of the low-temperature immersed pump and is assembled in a pump body, the condition that the medium leaks outwards can be reduced, a plurality of sealing elements still have some problems when in use, the sealing ring is sleeved between the bearing and the pump body generally through friction force, the sealing ring is easy to fall off due to centrifugal force generated during the movement of the bearing, and the sealing performance of equipment operation is influenced, so that the use efficiency is influenced.

Disclosure of Invention

The utility model aims to provide a sealing component of a low-temperature immersed pump, which solves the problems that the sealing component provided in the background art is insufficient in assembling stability and easy to fall off.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the low-temperature immersed pump sealing assembly comprises a bearing, a sealing element and a mounting ring, wherein the sealing element is sleeved outside the bearing, the bottom of the sealing element is fixedly connected with a bottom plate, and the mounting ring is sleeved at the bottom of the bearing;

the positioning blocks are fixedly connected to two sides of the bottom plate, positioning grooves are formed in two sides of the top of the mounting ring, through holes are formed in the bottom plate, and mounting bolts are inserted into the through holes.

Preferably, the positioning blocks are clamped into the positioning grooves, and the positioning blocks and the positioning grooves are in one-to-one correspondence.

Preferably, the inner side of the sealing element is provided with an outer ring, the inner side of the outer ring is provided with a first limit groove, the inner side of the outer ring is sleeved with an inner ring, the inner ring is sleeved outside the bearing, the inner side of the inner ring is provided with a second limit groove, and a wear-resistant ball is arranged between the second limit groove and the first limit groove.

Preferably, the wear-resistant ball is in rolling connection between the second limit groove and the first limit groove.

Preferably, the oil storage seats are arranged on two sides of the top end inside the sealing element, the oil filling holes are formed in two sides of the top of the sealing element, the sealing block is arranged inside the oil filling holes in a blocking mode, the limiting plate is fixedly connected to the top of the sealing block, and the oil outlet is formed in the bottom of the oil storage seat.

Preferably, the oil filling hole is communicated with the inside of the oil storage seat, and a groove is formed in one side of the top of the limiting plate.

Compared with the prior art, the utility model has the beneficial effects that: the sealing component of the low-temperature immersed pump has good assembling stability, improves the using effect, has a wear-resistant structure, can reduce the loss of the bearing to the sealing element, and simultaneously has a lubricating function, can lubricate the bearing and the internal parts and ensures the running stability;

(1) Through being provided with sealing member, collar, bottom plate, mounting bolt and locating piece, during the use, the collar is installed in the pump body, overlaps the sealing member outside the bearing, moves down the sealing member for the bottom plate bottom is laminated with the collar, and the locating piece block inlays in the constant head tank inside this moment, accomplishes first step location, later passes the through-hole inside with the mounting bolt, utilizes the mounting tool, installs the mounting bolt rotation inside the collar, accomplishes the assembly to the sealing member, ensures the steadiness of use;

(2) When the anti-wear ball bearing is used, the outer ring is assembled inside the sealing member, the inner ring is sleeved inside the outer ring, the inner wall of the inner ring is in contact with the outer wall of the bearing, so that the outer wall of the bearing cannot be in direct contact with the sealing member, the bearing drives the inner ring to rotate during running, the anti-wear ball bearing is arranged between the outer ring and the inner ring in a rolling way, the rolling contact area is small, the loss between the outer ring and the inner ring is small, the loss on the sealing member is reduced, and the service life is prolonged;

(3) Through being provided with wear-resisting ball, oil storage seat, sealing block, limiting plate, oil filler hole and oil-out, during the use, the wearing and tearing of long-time use internals are more serious, need pour into lubricating oil to inside, buckle the recess of limiting plate department, upwards pull out the sealing block, the oil filler hole exposes this moment, inside pouring into the oil filler hole with lubricating oil, inside reentrant oil storage seat, pour into lubricating oil through the oil-out to the wear-resisting ball of below, unnecessary lubricating oil drops down along wear-resisting ball, in the clearance between infiltration bearing and the sealing member, accomplish the lubrication to internals, again with the limiting plate stifled in the oil filler hole opening part can.

Drawings

FIG. 1 is a schematic cross-sectional elevation view of the present utility model;

FIG. 2 is a schematic top view of the present utility model;

FIG. 3 is a schematic elevational view of the present utility model;

fig. 4 is an enlarged partial sectional view of fig. 1 according to the present utility model.

In the figure: 1. a bearing; 2. a seal; 3. a first limit groove; 4. a through hole; 5. a mounting ring; 6. a positioning groove; 7. an inner ring; 8. the second limit groove; 9. an outer ring; 10. a bottom plate; 11. installing a bolt; 12. a positioning block; 13. wear-resistant balls; 14. an oil storage seat; 15. a sealing block; 16. a limiting plate; 17. an oil filling hole; 18. an oil outlet.

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. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1: referring to fig. 1-4, a low-temperature immersed pump sealing assembly comprises a bearing 1, a sealing element 2 and a mounting ring 5, wherein the sealing element 2 is sleeved outside the bearing 1, the bottom of the sealing element 2 is fixedly connected with a bottom plate 10, and the mounting ring 5 is sleeved at the bottom of the bearing 1;

the two sides of the bottom plate 10 are fixedly connected with positioning blocks 12, the positioning blocks 12 are clamped into the positioning grooves 6, the positioning grooves 6 are arranged on the two sides of the top of the mounting ring 5 in one-to-one correspondence with the positioning blocks 12 and the positioning grooves 6, the inside of the bottom plate 10 is provided with through holes 4, and mounting bolts 11 are inserted into the through holes 4;

specifically, as shown in fig. 1 and 3, the sealing element 2 is sleeved outside the bearing 1, so that the bottom of the bottom plate 10 is attached to the mounting ring 5, the positioning block 12 is clamped inside the positioning groove 6, then the mounting bolt 11 passes through the inside of the through hole 4, and the mounting bolt 11 is rotatably mounted inside the mounting ring 5 by using a mounting tool, so that the sealing element 2 is assembled, and the stability of use is ensured.

Example 2: an outer ring 9 is arranged on the inner side of the sealing element 2, a first limit groove 3 is formed in the inner side of the outer ring 9, an inner ring 7 is sleeved in the inner side of the outer ring 9, the inner ring 7 is sleeved outside the bearing 1, a second limit groove 8 is formed in the inner ring 7, a wear-resistant ball 13 is arranged between the second limit groove 8 and the first limit groove 3, and the wear-resistant ball 13 is connected between the second limit groove 8 and the first limit groove 3 in a rolling manner;

specifically, as shown in fig. 1 and 2, the inner wall of the inner ring 7 is in contact with the outer wall of the bearing 1, so that the outer wall of the bearing 1 is not in direct contact with the sealing element 2, the bearing 1 drives the inner ring 7 to rotate during operation, and wear-resistant balls 13 are arranged between the outer ring 9 and the inner ring 7 in a rolling manner, so that the loss of the sealing element 2 is reduced, and the service life is prolonged.

Example 3: the two sides of the top end inside the sealing element 2 are provided with oil storage seats 14, the two sides of the top of the sealing element 2 are provided with oil injection holes 17, the oil injection holes 17 are communicated with the inside of the oil storage seats 14, one side of the top of the limiting plate 16 is provided with a groove, the inside of the oil injection holes 17 is provided with sealing blocks 15 in a blocking manner, the top of each sealing block 15 is fixedly connected with the limiting plate 16, and the bottom of each oil storage seat 14 is provided with an oil outlet 18;

specifically, as shown in fig. 1 and 4, the groove at the limiting plate 16 is buckled, the sealing block 15 is pulled up, lubricating oil is injected into the oil injection hole 17 and then enters the oil storage seat 14, the lower wear-resistant balls 13 are injected with the lubricating oil through the oil outlet 18, and the redundant lubricating oil drops downwards along the wear-resistant balls 13 and permeates into the gap between the bearing 1 and the sealing element 2, so that the lubrication of the internal parts is completed.

Working principle: when the anti-wear seal is used, firstly, the mounting ring 5 is arranged in the pump body, the sealing element 2 is sleeved outside the bearing 1, the sealing element 2 is moved downwards, the bottom of the bottom plate 10 is attached to the mounting ring 5, the positioning block 12 is clamped and embedded in the positioning groove 6 at the moment, the first-step positioning is completed, then the mounting bolt 11 passes through the through hole 4, the mounting bolt 11 is rotatably arranged in the mounting ring 5 by using a mounting tool, the assembly of the sealing element 2 is completed, the outer ring 9 is arranged in the sealing element 2, the inner ring 7 is sleeved in the outer ring 9, the inner wall of the inner ring 7 is contacted with the outer wall of the bearing 1, the outer wall of the bearing 1 is not directly contacted with the sealing element 2, the bearing 1 drives the inner ring 7 to rotate when in operation, wear-resistant balls 13 are arranged between the outer ring 9 and the inner ring 7 in a rolling way, the rolling contact area is small, the loss between the two is small, the loss of the two is reduced, after long-time use, the wear of the inner parts is serious, lubricating oil is required to be injected into the groove at the limiting plate 16, the sealing block 15 is pulled up, the oil hole 17 is injected into the groove at the limiting plate 16, the inner part is exposed, the outer ring 17 is exposed, the outer ring is exposed out of the outer ring 2, the outer ring is directly contacted with the bearing 1, the wear-resistant balls 13 is dropped into the inner ring 13, and the wear-resistant balls 13 is dropped into the inner hole 13, and the inner part is filled into the gap between the bearing 13, and the wear-resistant balls through the bearing 13, and the wear-resistant balls is completely, and the wear-resistant balls is cooled down.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (6)

1. The utility model provides a low temperature immersed pump seal assembly, includes bearing (1), sealing member (2) and collar (5), its characterized in that: the sealing element (2) is sleeved outside the bearing (1), the bottom of the sealing element (2) is fixedly connected with the bottom plate (10), and the mounting ring (5) is sleeved at the bottom of the bearing (1);

positioning blocks (12) are fixedly connected to two sides of the bottom plate (10), positioning grooves (6) are formed in two sides of the top of the mounting ring (5), through holes (4) are formed in the bottom plate (10), and mounting bolts (11) are inserted into the through holes (4).

2. The cryogenic immersed pump seal assembly of claim 1, wherein: the positioning blocks (12) are clamped into the positioning grooves (6), and the positioning blocks (12) and the positioning grooves (6) are in one-to-one correspondence.

3. The cryogenic immersed pump seal assembly of claim 1, wherein: the inner side of sealing member (2) is installed outer loop (9), first spacing groove (3) have been seted up to the inboard of outer loop (9), the inside cover of outer loop (9) is equipped with inner ring (7), inner ring (7) cup joint in bearing (1) outside, second spacing groove (8) have been seted up to the inside of inner ring (7), be provided with wear-resisting ball (13) between second spacing groove (8) and first spacing groove (3).

4. A cryogenic immersed pump seal assembly according to claim 3, wherein: the wear-resistant ball (13) is connected between the second limit groove (8) and the first limit groove (3) in a rolling way.

5. The cryogenic immersed pump seal assembly of claim 1, wherein: the oil storage seat (14) is installed on both sides on the inside top of sealing member (2), oil filler hole (17) have been seted up on both sides at sealing member (2) top, the inside of oil filler hole (17) is stifled to be equipped with sealing block (15), the top fixedly connected with limiting plate (16) of sealing block (15), oil-out (18) have been seted up to the bottom of oil storage seat (14).

6. The cryogenic immersed pump seal assembly according to claim 5, wherein: the oil filling hole (17) is communicated with the inside of the oil storage seat (14), and a groove is formed in one side of the top of the limiting plate (16).