CN212899109U

CN212899109U - Mechanical sealing device for high-pressure pump

Info

Publication number: CN212899109U
Application number: CN202021818111.0U
Authority: CN
Inventors: 陈成标; 林祥春
Original assignee: ZHEJIANG LANDTEC MECHANICAL SEALS CO LTD
Current assignee: ZHEJIANG LANDTEC MECHANICAL SEALS CO LTD
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2021-04-06
Anticipated expiration: 2030-08-26

Abstract

The utility model discloses a mechanical seal device for high-pressure pump, including axle sleeve, spacer, gland subassembly, flange, quiet ring, rotating ring and spring, the axle sleeve left side is equipped with the spacer, and the spacer right side is equipped with quiet ring subassembly, is equipped with hexagon head bolt on the spacer, and quiet ring subassembly downside is equipped with the gland subassembly, is equipped with first O type circle between quiet ring subassembly and the gland subassembly, and quiet ring subassembly right side is equipped with the rotating ring subassembly, and the throw-out collar is connected on rotating ring subassembly right side, is equipped with second O type circle between rotating ring subassembly and the axle sleeve, and rotating ring subassembly downside is equipped with the spring holder subassembly, is equipped with slim parallel key between spring holder subassembly and the axle sleeve, and the spring holder subassembly downside is equipped with flange, is equipped with the spring in the flange. The utility model discloses a mechanical seal device for high-pressure pump, inside are equipped with a plurality of O type circles, guarantee the leakproofness between each structure, and special dynamic seal structure design, extensively are used for sealed high-pressure state, are a practical mechanical seal device for high-pressure pump.

Description

Mechanical sealing device for high-pressure pump

Technical Field

The utility model relates to a mechanical seal technical field specifically is a mechanical seal device for high-pressure pump.

Background

The mechanical seal is a device for preventing fluid leakage, which is formed by at least one pair of end faces perpendicular to the rotation axis, and the end faces are kept in fit and relatively slide under the action of fluid pressure and elastic force or magnetic force of a compensation mechanism and the cooperation of an auxiliary seal. The elastic loading mechanism and the auxiliary seal are mechanical seals of metal corrugated pipes, which are called metal corrugated pipe seals. In light sealing, a rubber corrugated pipe is used as auxiliary sealing, the elasticity of the rubber corrugated pipe is limited, and a spring is generally required to be supplemented to meet the loading elasticity. Mechanical seals are often referred to by the person simply as mechanical seals. The mechanical sealing device for the slurry pump on the market at present requires higher and higher use pressure, and in order to achieve the high-pressure condition, the pump is conventionally realized by adopting a multi-stage series connection mode, the working pressure of the mode is in a high-pressure state, and the general sealing device structure cannot meet the state.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a mechanical seal device for high pressure pump has the advantage that can bear the high-pressure state, can solve the problem among the prior art.

In order to achieve the above object, the utility model provides a following technical scheme: a mechanical sealing device for a high-pressure pump comprises a shaft sleeve, a positioning plate, a gland assembly, a connecting flange, a static ring, a movable ring and a spring, wherein the left side of the shaft sleeve is provided with the positioning plate, the right side of the positioning plate is provided with the static ring assembly, the positioning plate is provided with a hexagon bolt, the lower side of the static ring assembly is provided with the gland assembly, a first O-shaped ring is arranged between the static ring assembly and the gland assembly, the right side of the static ring assembly is provided with the movable ring assembly, the right side of the movable ring assembly is connected with a push ring, a second O-shaped ring is arranged between the movable ring assembly and the shaft sleeve, the lower side of the movable ring assembly is provided with a spring seat assembly, a thin flat key is arranged between the spring seat assembly and the shaft sleeve, the lower side of the spring seat assembly is provided with the connecting flange, the spring is arranged in the connecting flange, the right side of the spring is provided with, the rotating ring upside is equipped with fifth O type circle, and the axle sleeve right side is equipped with sixth O type circle, and the axle sleeve upside is equipped with spring washer, is equipped with interior hexagonal socket head cap screw in the spring washer, and the flange left side is equipped with seventh O type circle, and the flange right side is equipped with eighth O type circle.

Preferably, the movable ring fixing ring is connected with the shaft sleeve and the movable ring through an inner hexagonal concave end fastening screw.

Preferably, a fourth O-shaped ring is arranged between the bottom of the movable ring and the shaft sleeve.

Preferably, a gasket is arranged on the back of the third O-shaped ring outside the static ring.

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

the utility model discloses a mechanical seal device for high-pressure pump, inside are equipped with a plurality of O type circles, guarantee the leakproofness between each structure, and special dynamic seal structure design, extensively are used for sealed high-pressure state, are a practical mechanical seal device for high-pressure pump.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

In the figure: 1. a shaft sleeve; 2. positioning plates; 3. a hexagon head bolt; 4. a stationary ring assembly; 5. a first O-ring; 6. a gland assembly; 7. a rotating ring assembly; 8. a connecting flange; 9. a second O-ring; 10. a push ring; 11. a thin flat key; 12. a spring seat assembly; 13. a spring; 14. a push ring assembly; 15. a stationary ring; 16. a third O-ring; 17. a moving ring; 18. a fifth O-ring; 19. a sixth O-ring; 20. a socket head cap screw; 21. a spring washer; 22. a seventh O-ring; 23. an eighth O-ring; 24. a gasket; 25. a movable ring fixing ring; 26. a set screw is fastened at the concave end of the inner hexagon; 27. and a fourth O-ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, a mechanical sealing device for a high pressure pump comprises a shaft sleeve 1, a positioning plate 2, a gland assembly 6, a connecting flange 8, a stationary ring 15, a moving ring 17 and a spring 13, wherein the positioning plate 2 is arranged on the left side of the shaft sleeve 1, the positioning plate 2 is used for keeping sealing, the stationary ring assembly 4 is arranged on the right side of the positioning plate 2, a hexagon bolt 3 is arranged on the positioning plate 2, the gland assembly 6 is arranged on the lower side of the stationary ring assembly 4, a first O-ring 5 is arranged between the stationary ring assembly 4 and the gland assembly 6, the first O-ring 5 ensures the sealing property between the stationary ring assembly 4 and the gland assembly 6, the moving ring assembly 7 is arranged on the right side of the stationary ring assembly 4, the pushing ring 10 is connected on the right side of the moving ring assembly 7, a second O-ring 9 is arranged between the moving ring assembly 7 and the shaft sleeve 1, the spring seat assembly 12 is arranged on the lower side of the moving ring assembly 7, a thin, the connecting flange 8 is internally provided with a spring 13, the spring 13 has the advantage of force rebound and can effectively seal during working, two springs 13 and two connecting flanges 8 are arranged, the right side of the spring 13 is provided with a push ring assembly 14, the right side of the push ring assembly 14 is provided with a static ring 15, the back of a third O-shaped ring 16 outside the static ring 15 is provided with a gasket 24, a third O-shaped ring 16 is arranged between the connecting flange 8 and the static ring 15, the third O-shaped ring 16 ensures the sealing property between the connecting flange 8 and the static ring 15, the right side of the static ring 15 is provided with a movable ring 17, a fourth O-shaped ring 27 is arranged between the movable ring 17 and the shaft sleeve 1, the outer side of the movable ring 17 is provided with a movable ring fixing ring 25, the movable ring fixing ring 25 is connected with the shaft sleeve 1 and the movable ring 17 through an inner hexagonal concave end fastening screw 26, the upper side of the movable ring 17 is provided with a fifth O-shaped ring 18, the right side of the, the left side of the connecting flange 8 is provided with a seventh O-shaped ring 22, the seventh O-shaped ring 22 ensures the sealing property between the connecting flange 8 and the gland assembly 6, and the right side of the connecting flange 8 is provided with an eighth O-shaped ring 23.

In summary, the following steps: the utility model discloses a mechanical seal device for high-pressure pump, inside are equipped with a plurality of O type circles, guarantee the leakproofness between each structure, and special dynamic seal structure design, extensively are used for sealed high-pressure state, are a practical mechanical seal device for high-pressure pump.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a mechanical seal device for high pressure pump, includes axle sleeve (1), spacer (2), gland subassembly (6), flange (8), quiet ring (15), rotating ring (17) and spring (13), its characterized in that: the left side of the shaft sleeve (1) is provided with a positioning plate (2), the right side of the positioning plate (2) is provided with a static ring component (4), the positioning plate (2) is provided with a hexagon bolt (3), the lower side of the static ring component (4) is provided with a gland component (6), a first O-shaped ring (5) is arranged between the static ring component (4) and the gland component (6), the right side of the static ring component (4) is provided with a moving ring component (7), the right side of the moving ring component (7) is connected with a push ring (10), a second O-shaped ring (9) is arranged between the moving ring component (7) and the shaft sleeve (1), the lower side of the moving ring component (7) is provided with a spring seat component (12), a thin flat key (11) is arranged between the spring seat component (12) and the shaft sleeve (1), the lower side of the spring seat component (12) is provided with a connecting flange (8), a spring (, the right side of the push ring assembly (14) is provided with a static ring (15), a third O-shaped ring (16) is arranged between the connecting flange (8) and the static ring (15), the right side of the static ring (15) is provided with a rotating ring (17), the outer side of the rotating ring (17) is provided with a rotating ring fixing ring (25), the upper side of the rotating ring (17) is provided with a fifth O-shaped ring (18), the right side of the shaft sleeve (1) is provided with a sixth O-shaped ring (19), the upper side of the shaft sleeve (1) is provided with a spring washer (21), an inner hexagonal cylindrical head screw (20) is arranged in the spring washer (21), the left side of the connecting flange (8) is provided with a seventh O-shaped ring (22), and.

2. The mechanical seal device for a high-pressure pump according to claim 1, wherein: the movable ring fixing ring (25) is connected with the shaft sleeve (1) and the movable ring (17) through an inner hexagonal concave end set screw (26).

3. The mechanical seal device for a high-pressure pump according to claim 1, wherein: and a fourth O-shaped ring (27) is arranged between the bottom of the movable ring (17) and the shaft sleeve (1).

4. The mechanical seal device for a high-pressure pump according to claim 1, wherein: and a gasket (24) is arranged at the back of a third O-shaped ring (16) on the outer side of the static ring (15).