CN112196826A

CN112196826A - Wear-resisting type centrifugal pump mechanical seal

Info

Publication number: CN112196826A
Application number: CN202011143966.2A
Authority: CN
Inventors: 徐卫忠; 徐飞
Original assignee: Zhangjiagang Xingyu Petrochemical Machinery Co ltd
Current assignee: Zhangjiagang Xingyu Petrochemical Machinery Co ltd
Priority date: 2020-10-23
Filing date: 2020-10-23
Publication date: 2021-01-08

Abstract

The invention discloses a wear-resistant centrifugal pump mechanical seal which comprises a rotating shaft, wherein a housing is arranged on the outer side of the rotating shaft, a static ring and a moving ring are arranged in the housing, and a lubricating assembly is arranged between the static ring and the moving ring.

Description

Wear-resisting type centrifugal pump mechanical seal

Technical Field

The invention relates to the technical field of mechanical seal, in particular to a mechanical seal of a wear-resistant centrifugal 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 the elastic force (or magnetic force) of a compensation mechanism and the cooperation of an auxiliary seal.

The current mechanical seal is sealed by utilizing a static ring and a dynamic ring, the seal ring and the shaft are rubbed, the abrasion is serious, the service life is short, and the mechanical seal needs to be regularly maintained and replaced.

Disclosure of Invention

The invention aims to provide a wear-resistant centrifugal pump mechanical seal to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

the wear-resistant centrifugal pump mechanical seal comprises a rotating shaft, wherein a housing is arranged on the outer side of the rotating shaft, a static ring and a dynamic ring are arranged inside the housing, and a lubricating assembly is arranged between the static ring and the dynamic ring.

Preferably, a stationary ring sealing ring is arranged between the stationary ring and the housing, a threaded hole is formed in the housing corresponding to the stationary ring, a locking bolt is arranged inside the threaded hole, and the stationary ring is fixedly connected with the housing through the locking bolt.

Preferably, a moving ring sealing ring is arranged between the moving ring and the rotating shaft, a sleeve ring is sleeved on the rotating shaft, a spring is fixedly mounted on the sleeve ring, a push ring is fixedly mounted at the other end of the spring, and the push ring is fixedly connected with the moving ring.

Preferably, the lubricating assembly comprises a mounting ring, the mounting ring is arranged inside the housing and is located between the movable ring and the static ring, an annular frame is fixedly mounted inside the mounting ring, an annular pipeline is arranged inside the annular frame, and an oil outlet is formed in the annular frame.

Preferably, be provided with the oiling mouth on the lateral wall of housing, be provided with the dust plug on the oiling mouth, be linked together through logical groove and through-hole between oiling mouth and the ring conduit.

Preferably, the annular frame is provided with symmetrically distributed oil locking edges.

Compared with the prior art, the invention has the beneficial effects that: the utility model provides a wear-resisting type centrifugal pump mechanical seal, improve the sealed effect of quiet ring department through quiet ring seal circle, fix quiet ring through the fitting pin, through the lantern ring, push away ring and spring, make the rotating ring compress tightly in the inside of housing, the rotating ring seal circle improves the sealed effect of rotating ring department, can inject lubricating liquid through the oiling mouth, evenly ooze at rotating ring and quiet ring position department through the oil outlet, reduce the friction loss of sealed department, reduce the number of times of maintaining the replacement, and the service life is prolonged, lock the oil limit setting, when making to add excessive lubricating liquid, the part oozes, can pass through tension locking inside lock the oil limit for the rest, avoid lubricating liquid excessive. The invention relates to a wear-resistant centrifugal pump mechanical seal, which is provided with a static ring seal ring, an oil locking edge, an oil outlet hole and the like, achieves the effects of improving the sealing property of the mechanical seal, having good wear resistance and good lubricating effect, prolonging the service life and the like, and solves the problems that the current mechanical seal is sealed by utilizing a static ring and a dynamic ring, the seal ring and a shaft rub with each other, the wear is serious, the service life is short, and the mechanical seal needs to be maintained and replaced regularly.

Drawings

FIG. 1 is a schematic structural view of a mechanical seal of a wear-resistant centrifugal pump;

fig. 2 is a schematic structural diagram of an annular frame in a mechanical seal of a wear-resistant centrifugal pump.

In the figure: 1-rotating shaft, 2-housing, 3-stationary ring, 4-threaded hole, 5-locking bolt, 6-stationary ring sealing ring, 7-lantern ring, 8-spring, 9-push ring, 10-movable ring, 11-movable ring sealing ring, 12-oil injection port, 13-mounting ring, 14-annular frame, 15-oil locking edge, 16-annular pipeline, 17-oil outlet hole, 18-through groove, 19-through hole and 20-dustproof plug.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: the wear-resistant centrifugal pump mechanical seal comprises a rotating shaft 1, wherein a housing 2 is arranged on the outer side of the rotating shaft 1, a static ring 3 and a moving ring 10 are arranged inside the housing 2, and a lubricating assembly is arranged between the static ring 3 and the moving ring 10.

Be provided with quiet ring seal 6 between quiet ring 3 and housing 2, correspond quiet ring 3 position department on housing 2 and offered screw hole 4, the inside of screw hole 4 is provided with the latch bolt 5, through latch bolt 5 fixed connection between quiet ring 3 and the housing 2.

Improve the sealed effect of quiet ring 3 department through quiet ring seal 6, fix quiet ring 3 through fitting pin 5.

A movable ring sealing ring 11 is arranged between the movable ring 10 and the rotating shaft 1, a sleeve ring 7 is sleeved on the rotating shaft 1, a spring 8 is fixedly mounted on the sleeve ring 7, a push ring 9 is fixedly mounted at the other end of the spring 8, and the push ring 9 is fixedly connected with the movable ring 10.

Through the lantern ring 7, the push ring 9 and the spring 8, the movable ring 10 is tightly pressed in the housing 2, and the movable ring sealing ring 11 improves the sealing effect of the movable ring 10.

The lubricating component comprises a mounting ring 13, the mounting ring 13 is arranged inside the housing 2, the mounting ring 13 is located between the movable ring 10 and the stationary ring 3, an annular frame 14 is fixedly mounted inside the mounting ring 13, an annular pipeline 16 is arranged inside the annular frame 14, and an oil outlet 17 is formed in the annular frame 14.

An oil filling port 12 is arranged on the outer side wall of the housing 2, a dustproof plug 20 is arranged on the oil filling port 12, and the oil filling port 12 is communicated with the annular pipeline 16 through a through groove 18 and a through hole 19.

Can inject lubricating liquid through oiling mouth 12, evenly ooze at rotating ring 10 and quiet ring 3 position department through oil outlet 17, reduce the friction loss of sealed department, reduce the number of times of maintaining the replacement, improve life.

The annular frame 14 is provided with symmetrically distributed oil locking edges 15.

The oil locking edge 15 is arranged, so that when excessive lubricating liquid is added, part of the lubricating liquid seeps out, and the rest lubricating liquid can be locked inside the oil locking edge 15 through tension, and the excessive lubricating liquid is avoided.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention 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.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a wear-resisting type centrifugal pump mechanical seal, includes pivot (1), its characterized in that: the outer side of the rotating shaft (1) is provided with a housing (2), a static ring (3) and a dynamic ring (10) are arranged inside the housing (2), and a lubricating component is arranged between the static ring (3) and the dynamic ring (10).

2. A wear-resistant centrifugal pump mechanical seal according to claim 1, wherein: be provided with quiet ring seal circle (6) between quiet ring (3) and housing (2), correspond quiet ring (3) position department on housing (2) and seted up screw hole (4), the inside of screw hole (4) is provided with lock bolt (5), through lock bolt (5) fixed connection between quiet ring (3) and housing (2).

3. A wear-resistant centrifugal pump mechanical seal according to claim 2, wherein: be provided with between rotating ring (10) and pivot (1) rotating ring sealing washer (11), the cover is equipped with lantern ring (7) in pivot (1), fixed mounting has spring (8) on lantern ring (7), the other end fixed mounting of spring (8) has throw-out collar (9), fixed connection between throw-out collar (9) and rotating ring (10).

4. A wear-resistant centrifugal pump mechanical seal according to claim 3, wherein: the lubricating component comprises a mounting ring (13), the mounting ring (13) is arranged inside the housing (2), the mounting ring (13) is located between the moving ring (10) and the static ring (3), an annular frame (14) is fixedly arranged inside the mounting ring (13), an annular pipeline (16) is arranged inside the annular frame (14), and an oil outlet (17) is formed in the annular frame (14).

5. A wear-resistant centrifugal pump mechanical seal according to claim 4, wherein: be provided with oiling mouth (12) on the lateral wall of housing (2), be provided with dust plug (20) on oiling mouth (12), be linked together through logical groove (18) and through-hole (19) between oiling mouth (12) and ring conduit (16).

6. A wear-resistant centrifugal pump mechanical seal according to claim 5, wherein: the annular frame (14) is provided with symmetrically distributed oil locking edges (15).