CN216666494U

CN216666494U - Mechanical seal with long service life

Info

Publication number: CN216666494U
Application number: CN202123198552.2U
Authority: CN
Inventors: 明兴平; 杨宗迪; 吴波; 张霞
Original assignee: Zigong Chuanmi Environmental Protection Technology Co ltd
Current assignee: Zigong Chuanmi Environmental Protection Technology Co ltd
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2022-06-03
Anticipated expiration: 2031-12-20

Abstract

The utility model discloses a long-life mechanical seal, comprising: the upper end fixed mounting who includes the machine seal gland has the gasket, and the inner of machine seal gland is provided with quiet ring, and simultaneously, the upper end of this quiet ring is rotated and is installed the flooding metal graphite rotating ring, the flooding metal graphite rotating ring is located the inside of machine seal gland, the axle sleeve is located the upside of machine seal gland for the protection main shaft is not worn and torn, its characterized in that still includes, the rotating ring seat, the inside of rotating ring seat is provided with the spring, and the upper end threaded connection of rotating ring seat has the stationary blade, the lower extreme of stationary blade is provided with the flooding metal graphite rotating ring the rotating ring seat sets up the lower extreme at the axle sleeve, the inside at machine seal gland is installed to the lower extreme block of axle sleeve, the inner fixed mounting of flooding metal graphite rotating ring has stereoplasm alloy layer rotating ring. The mechanical seal with long service life has good use effect, long service life and better sealing performance.

Description

Mechanical seal with long service life

Technical Field

The utility model relates to the technical field related to mechanical seal, in particular to a long-service-life mechanical seal.

Background

The mechanical seal is a shaft seal device of a rotating machine, such as a centrifugal pump, a centrifuge, a reaction kettle, a compressor and the like, and a shaft seal device for preventing leakage is needed because a transmission shaft penetrates inside and outside the equipment, so that a circumferential gap exists between the shaft and the equipment, a medium in the equipment leaks outwards through the gap, and air leaks inwards if the pressure in the equipment is lower than the atmospheric pressure.

However, in the existing mechanical seal, the sealing ring is long in service time and easy to wear and break, the moving ring has a common use effect and a short service life, and water leakage and the like are easy to occur, so that a mechanical seal with a long service life is provided, so as to solve the problems provided in the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a mechanical seal with long service life, which solves the problems that the existing mechanical seal ring in the background art has long service life, is easy to wear and break, has general use effect of a movable ring, has short service life, is easy to leak water and the like.

In order to achieve the purpose, the utility model provides the following technical scheme: a long life mechanical seal comprising:

the upper end of the mechanical seal gland is fixedly provided with a gasket, and the inner end of the mechanical seal gland is provided with a static ring;

meanwhile, an impregnated metal graphite moving ring is rotatably arranged at the upper end of the static ring and is positioned inside the mechanical seal gland;

the shaft sleeve is positioned on the upper side of the mechanical seal gland and used for protecting the main shaft from being abraded;

it is characterized by also comprising:

the movable ring seat is internally provided with a spring, the upper end of the movable ring seat is in threaded connection with a fixed plate, and the lower end of the fixed plate is provided with a metal impregnated graphite movable ring.

Preferably, the movable ring seat is arranged at the lower end of the shaft sleeve, and the lower end of the shaft sleeve is clamped and installed in the machine sealing cover.

Preferably, a hard alloy layer moving ring is fixedly mounted at the inner end of the metal-impregnated graphite moving ring, and a mounting groove is formed in the lower end of the hard alloy layer moving ring.

Preferably, the inside block of mounting groove is installed and is stablized the piece, the upper end fixed mounting of stablizing the piece has fluorine plain rubber movable ring sealing washer.

Preferably, the hydrogenated nitrile-butadiene rubber dynamic ring sealing ring is fixedly mounted at the upper end of the fluorine rubber dynamic ring sealing ring, and the fluorine rubber dynamic ring sealing ring and the hydrogenated nitrile-butadiene rubber dynamic ring sealing ring are both clamped and mounted at the inner end of the hard alloy layer dynamic ring.

Compared with the prior art, the utility model has the beneficial effects that:

1. the hydrogenated nitrile rubber dynamic ring seal ring has the advantages that the fluorinated rubber dynamic ring seal ring and the hydrogenated nitrile rubber dynamic ring seal ring are arranged, the fluorinated rubber dynamic ring seal ring is good in chemical resistance and stability, has resistance to most of oils and solvents, and is strong in corrosion resistance, tear resistance and compression deformation resistance, the quality of a common seal ring is greatly improved, and the service life is prolonged;

2. the dip metal graphite moving ring and the hard alloy layer moving ring are arranged, the dip metal graphite moving ring is small in corrosion resistance and friction coefficient, the hard alloy layer moving ring is good in temperature resistance and high in hardness, the dip metal graphite moving ring and the hard alloy layer moving ring form the moving ring together, the use effect is good, and the service life is long;

3. be provided with stabilizing block and mounting groove, stabilizing block fixed mounting is at the lower extreme of fluorine plain rubber rotating ring sealing washer, and fluorine plain rubber rotating ring sealing washer plays the effect that prevents to take place to leak between flooding metal graphite rotating ring and the moving axis, installs the block card that stabilizes in the mounting groove, makes the more firm of fluorine plain rubber rotating ring sealing washer and carbide layer rotating ring installation, and sealed ability is better.

Drawings

FIG. 1 is a schematic view of the overall disassembled structure of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a schematic sectional view of the fluorine rubber dynamic ring seal ring of the present invention;

fig. 4 is a sectional structure diagram of the hard alloy layer moving ring of the utility model.

In the figure: 1. a mechanical seal gland; 2. a shaft sleeve; 3. a movable ring seat; 4. a spring; 5. a fixing sheet; 6. a fluorine rubber moving ring sealing ring; 7. dipping a metal graphite moving ring; 8. a stationary ring; 9. a gasket; 10. a hard alloy layer moving ring; 11. hydrogenated nitrile rubber ring rubber seal ring; 12. a stabilizing block; 13. and (4) mounting the groove.

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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a long-life mechanical seal comprises a mechanical seal gland 1, a shaft sleeve 2, a movable ring seat 3, a spring 4, a fixing piece 5, a fluorine rubber movable ring seal ring 6, an impregnated metal graphite movable ring 7, a static ring 8, a gasket 9, a hard alloy layer movable ring 10, a hydrogenated nitrile rubber movable ring seal ring 11, a stabilizing block 12 and a mounting groove 13, wherein when the long-life mechanical seal is used, as shown in figures 1, 3 and 4, the gasket 9 is fixedly arranged at the upper end of the mechanical seal gland 1, the static ring 8 is arranged at the inner end of the mechanical seal gland 1, the stabilizing block 12 fixedly arranged at the lower end of the fluorine rubber movable ring seal ring 6 is inserted into the mounting groove 13, then the fluorine rubber movable ring seal ring 6 and the hydrogenated nitrile rubber movable ring seal ring 11 can be clamped into the inner end of the hard alloy layer movable ring 10, the high-temperature resistance of the fluorine rubber movable ring seal ring 6 is better than that of silicon rubber, and the high-weather resistance is good, The hydrogenated nitrile rubber ring seal 11 has excellent corrosion resistance, tear resistance and compression deformation resistance;

as shown in fig. 1, fig. 3 and fig. 4, the outer end of the hard alloy layer moving ring 10 is fixedly provided with the impregnated metal graphite moving ring 7, the hard alloy layer moving ring 10 has good temperature resistance, the impregnated metal graphite moving ring 7 has good corrosion resistance and self-lubrication, and small friction coefficient, the impregnated metal graphite moving ring 7 is arranged at the outer end of the hard alloy layer moving ring 10, and the impregnated metal graphite moving ring 7 and the hard alloy layer moving ring interact with each other, so that the service performance is good, and the service life is prolonged;

as shown in fig. 1, 2, 3 and 4, the spring 4 is installed inside the moving ring seat 3, then the fixing piece 5 is fixedly installed at the lower end of the moving ring seat 3, then the installed fluorine rubber moving ring seal ring 6 and the metal-impregnated graphite moving ring 7 are installed inside the sealing cover 1, the shaft sleeve 2 is installed at the upper end of the moving ring seat 3, then the fixing piece 5 is installed inside the sealing cover 1, and the long-life mechanical seal can be installed and used on the machine, so that a series of operations of the long-life mechanical seal can be completed, and the content not described in detail in the description belongs to the prior art known to those skilled in the art.

The standard parts used in the utility model can be purchased from the market, the special-shaped parts can be customized according to the description of the specification and the accompanying drawings, the specific connection mode of each part adopts conventional means such as bolts, rivets, welding and the like mature in the prior art, the machines, the parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, so that the detailed description is omitted.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the utility model can be made, and equivalents and modifications of some features of the utility model can be made without departing from the spirit and scope of the utility model.

Claims

1. A mechanical seal with long service life comprises a gasket (9) fixedly arranged at the upper end of a mechanical seal gland (1), and a static ring (8) arranged at the inner end of the mechanical seal gland (1);

meanwhile, the upper end of the static ring (8) is rotatably provided with a dipping metal graphite rotating ring (7), and the dipping metal graphite rotating ring (7) is positioned inside the mechanical seal gland (1);

the shaft sleeve (2) is positioned on the upper side of the mechanical seal gland (1), and the shaft sleeve (2) is used for protecting the main shaft from being abraded;

it is characterized by also comprising:

the movable ring seat is characterized by comprising a movable ring seat (3), a spring (4) is arranged inside the movable ring seat (3), a fixing piece (5) is connected to the upper end of the movable ring seat (3) in a threaded mode, and a metal impregnated graphite movable ring (7) is arranged at the lower end of the fixing piece (5).

2. The long life mechanical seal of claim 1, wherein: the movable ring seat (3) is arranged at the lower end of the shaft sleeve (2), and the lower end of the shaft sleeve (2) is clamped and installed in the machine sealing gland (1).

3. A long life mechanical seal as claimed in claim 1, wherein: the inner end of the metal-impregnated graphite rotating ring (7) is fixedly provided with a hard alloy layer rotating ring (10), and the lower end of the hard alloy layer rotating ring (10) is provided with an installation groove (13).

4. A long life mechanical seal as claimed in claim 3, wherein: the inner part of the mounting groove (13) is clamped with a stabilizing block (12), and the upper end of the stabilizing block (12) is fixedly provided with a fluorine rubber moving ring sealing ring (6).

5. The long life mechanical seal of claim 4, wherein: hydrogenated nitrile rubber dynamic ring sealing rings (11) are fixedly mounted at the upper ends of the fluorine rubber dynamic ring sealing rings (6), and the fluorine rubber dynamic ring sealing rings (6) and the hydrogenated nitrile rubber dynamic ring sealing rings (11) are clamped and mounted at the inner ends of the hard alloy layer dynamic rings (10).