CN212839403U

CN212839403U - Integrated mechanical seal with washing structure and good dynamic property

Info

Publication number: CN212839403U
Application number: CN202021878271.4U
Authority: CN
Inventors: 俞红兵; 俞红祥
Original assignee: Hangzhou Hongtu Seal Technology Co ltd
Current assignee: Hangzhou Hongtu Seal Technology Co ltd
Priority date: 2020-09-01
Filing date: 2020-09-01
Publication date: 2021-03-30
Anticipated expiration: 2030-09-01

Abstract

The utility model discloses a self-contained mechanical seal with a flushing structure and good dynamic property, which comprises a shaft sleeve, a movable ring seat, a movable ring, a static ring seat, a corrugated pipe component and a gland, wherein a rotating shaft is sleeved on a rotating shaft, the movable ring seat, the movable ring, the static ring and the static ring seat are sequentially sleeved on the shaft sleeve, the movable ring seat is fixed on the shaft sleeve, the movable ring is fixed on the inner side of the movable ring seat, the static ring is arranged at the inner side of the static ring seat, one side of the static ring is contacted with the dynamic ring, the inner side of the gland is fixed with a water jacket, the corrugated pipe component is sleeved on the water jacket, be equipped with on the gland and wash mouth and leakage fluid dram, wash the outside of mouth and gland and link up, the leakage fluid dram link up with the inboard of gland, the utility model discloses simple structure, compactness, simple to operate adopts single terminal surface, multi-spring structure, and the collection dress formula is sealed, can rotate to wantonly, and bearing pressure is even, and the while leakage point is few, and sealing performance is reliable.

Description

Integrated mechanical seal with washing structure and good dynamic property

Technical Field

The utility model relates to a from area washing structure and dynamic good collection dress formula mechanical seal.

Background

The mechanical seal (mechanical seal) is a device for preventing fluid leakage, which is composed of at least one pair of end faces perpendicular to the rotation axis, and the end faces are kept in contact and relatively slide under the action of fluid pressure and the elastic force (or magnetic force) of a compensation mechanism and the matching 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 seal" is often referred to by one as "mechanical seal" for short.

The mechanical seal is a shaft seal device of a rotating machine. Such as centrifugal pumps, centrifuges, reaction kettles, compressors, and the like. Since the rotating shaft penetrates inside and outside the apparatus, so that there is a circumferential gap between the shaft and the apparatus through which the medium in the apparatus leaks to the outside, and if the pressure in the apparatus is lower than the atmospheric pressure, air leaks into the apparatus, a shaft sealing device for preventing the leakage is necessary. The shaft seal has many kinds, and the mechanical seal has the advantages of small leakage amount, long service life and the like, so the mechanical seal is the most important shaft sealing mode in the devices in the world.

The first is to use the concept of "container" in transportation. The rotary and static parts of the seal are assembled into a whole before installation, and after inspection and pressure test are qualified, the seal is sleeved on the shaft in the shaft seal box and fixed on the shaft by a set screw, a gland bolt is tightened, and a packaging positioning sheet is removed, so that the mechanical seal can be in a parallel surface working state and put into operation. Thus, the assembly is easy and the assembly quality is ensured; due to the difference of the use environments of the pumps, different environments have different requirements on the performance, structure and technology of the pumps, and different pumps also need different mechanical seals in order to meet certain requirements, so that different mechanical seals have different structural characteristics.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a simple structure, compactness, simple to operate adopts single terminal surface, many spring structures, and the collection dress formula is sealed, can rotate to wantonly, and bearing pressure is even, and the while leakage point is few, and sealing performance is reliable, and environmental suitability is strong, has practicality and uses the extensive collection dress formula mechanical seal that structure and dynamic nature are good from the area washing.

In order to solve the above problem, the utility model adopts the following technical scheme:

the utility model provides a from area wash structure and collection dress formula mechanical seal that dynamic nature is good, includes axle sleeve, rotating ring seat, rotating ring, quiet ring seat, bellows subassembly and gland, and the pivot cover is on the rotation axis, rotating ring seat, rotating ring, quiet ring seat overlap in proper order on the axle sleeve, and the rotating ring seat is fixed on the axle sleeve, and the inboard at the rotating ring seat is fixed to the rotating ring, quiet ring sets up the inboard of quiet ring seat, one side and the rotating ring contact of quiet ring, the inboard of gland is fixed with the water jacket, and bellows subassembly overlaps on the water jacket, be equipped with on the gland and wash mouth and leakage fluid dram, wash the outside of mouth and gland and link up, the leakage fluid dram link up with the inboard of gland.

The utility model discloses a wash the setting of mouth and leakage fluid dram, be convenient for regularly wash mechanical seal, clear away inside impurity, guarantee its holistic leakproofness.

Preferably, the shaft sleeve is provided with an outer ring protruding outwards, the outer ring is provided with a bolt, the movable ring seat is provided with a threaded hole, and the bolt penetrates through the outer ring and is connected with the threaded hole.

The arrangement is convenient for the fixed connection between the movable ring seat and the shaft sleeve.

Preferably, a shaft seal is arranged on the inner side of the shaft sleeve connected with the rotating shaft.

This setting has increased the leakproofness between axle sleeve and the rotation axis.

Preferably, a sealing gasket is arranged at the joint of the corrugated pipe assembly and the gland.

This setting has increased the leakproofness between bellows subassembly and the gland.

Preferably, one side of the gland is provided with a gland pad.

This setting has increased the leakproofness when the end cover is connected.

Preferably, the outer side of the gland is provided with a water blocking cover, the inner side of the water blocking cover is provided with a closure bushing, and the inner side of the closure bushing is connected with the rotating shaft.

This arrangement further increases the overall sealing properties thereof.

Preferably, the stationary ring seat is provided with a boss, and the stationary ring is provided with a concave structure matched with the boss.

This setting, the fixed connection between quiet ring of being convenient for and the quiet ring holder prevents that quiet ring from rotating.

The utility model has the advantages that: simple structure, compactness, simple to operate adopts single terminal surface, many spring structures, and the collection dress formula is sealed, can revolve to wantonly, and bearing pressure is even, and the leakage point is few simultaneously, and sealing performance is reliable, and environmental suitability is strong, has the practicality and the universality of use.

Drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly described below, but the scope of the present invention is not limited thereto.

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view of the shaft sleeve of the present invention;

FIG. 3 is a front view of the water blocking cover of the present invention;

fig. 4 is a schematic front view of the gland of the present invention;

FIG. 5 is a schematic sectional view of the water jacket according to the present invention;

FIG. 6 is a schematic sectional view of the movable ring seat of the present invention;

the device comprises a shaft sleeve 1, a movable ring seat 2, a movable ring 3, a stationary ring 4, a stationary ring 5, a corrugated pipe assembly 6, a gland 7, a water retaining cover 8, a cut-off bush 9, a water jacket 10, a flushing port 11, a sealing gasket 12, a shaft seal 13, a bolt 14, a gland gasket 15, a threaded hole 16, a liquid discharge port 17, a through hole 18, a boss 19, a rotating shaft 20 and an outer ring 21.

Detailed Description

Referring to fig. 1 to 6, the self-contained mechanical seal with a flushing structure and good dynamic performance includes a shaft sleeve 1, a moving ring seat 2, a moving ring 3, a stationary ring 4, a stationary ring seat 5, a bellows assembly 6 and a gland 7, wherein a rotating shaft 1 is sleeved on a rotating shaft, the moving ring seat 2, the moving ring 3, the stationary ring 4 and the stationary ring seat 5 are sequentially sleeved on the shaft sleeve 1, the moving ring seat 2 is fixed on the shaft sleeve 1, the moving ring 3 is fixed on the inner side of the moving ring seat 2, the stationary ring 4 is provided with the inner side of the stationary ring seat 5, one side of the stationary ring 4 is in contact with the moving ring 3, the inner side of the gland 7 is fixed with a water jacket 10, a through hole 18 is provided on the water jacket 10, the bellows assembly 6 is sleeved on the water jacket 10, the gland 7 is provided with a flushing port 11 and a liquid discharge port 17, the flushing port 11 is communicated with the outer side of the gland 7.

Further, an outer ring 21 protruding outwards is arranged on the shaft sleeve 1, a bolt 14 is arranged on the outer ring 21, a threaded hole 16 is arranged on the movable ring seat 2, and the bolt 14 penetrates through the outer ring 21 to be connected with the threaded hole 16.

Further, a shaft seal 13 is arranged on the inner side of the shaft sleeve 1 connected with the rotating shaft 20.

Further, a sealing gasket 12 is arranged at the joint of the corrugated pipe assembly 6 and the gland 7.

Further, a gland pad 15 is provided at one side of the gland 7.

Further, a water blocking cover 8 is installed on the outer side of the pressing cover 7, a closure bushing 9 is arranged on the inner side of the water blocking cover 8, and the inner side of the closure bushing 9 is connected with the rotating shaft 20.

Furthermore, a boss 19 is arranged on the stationary ring seat 5, and a concave structure matched with the boss 19 is arranged on the stationary ring 4.

The utility model discloses during the use, at first install rotating ring seat, rotating ring, quiet ring seat, bellows subassembly, gland, retaining cap, closure bush, water jacket and oil blanket, gland pad etc. on the axle sleeve according to certain order, during the installation, directly fix mechanical seal on the rotation axis can.

The working principle of the utility model is similar to the existing mechanical seal, and the detailed description is not estimated.

The above is only the specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the creative work should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims

1. The utility model provides a from collection dress formula mechanical seal that area washed structure and dynamics are good which characterized in that: including axle sleeve, rotating ring seat, rotating ring, quiet ring seat, bellows subassembly and gland, the pivot cover is on the rotation axis, rotating ring seat, rotating ring, quiet ring seat cover are in proper order on the axle sleeve, and the rotating ring seat is fixed on the axle sleeve, and the inboard at the rotating ring seat is fixed to the rotating ring, quiet ring sets up the inboard of quiet ring seat, and one side and the rotating ring contact of quiet ring, the inboard of gland is fixed with the water jacket, and bellows subassembly cover is on the water jacket, be equipped with on the gland and wash mouthful and leakage fluid dram, wash the outside of mouthful and gland and link up, the leakage fluid dram link up with the inboard of gland.

2. The self-contained washing structure and dynamic cartridge type mechanical seal according to claim 1, wherein: the movable ring seat is provided with a threaded hole, and the bolt penetrates through the outer ring to be connected with the threaded hole.

3. The self-contained washing structure and dynamic cartridge type mechanical seal according to claim 1, wherein: and a shaft seal is arranged on the inner side of the shaft sleeve connected with the rotating shaft.

4. The self-contained washing structure and dynamic cartridge type mechanical seal according to claim 1, wherein: and a sealing gasket is arranged at the joint of the corrugated pipe assembly and the gland.

5. The self-contained washing structure and dynamic cartridge type mechanical seal according to claim 1, wherein: and a gland pad is arranged on one side of the gland.

6. The self-contained washing structure and dynamic cartridge type mechanical seal according to claim 1, wherein: the outside installation retaining cover of gland, the inboard of retaining cover is equipped with the bush that dams, and the inboard and the swivelling axis of bush that dams are connected.

7. The self-contained washing structure and dynamic cartridge type mechanical seal according to claim 1, wherein: the static ring seat is provided with a boss, and the static ring is provided with a concave structure matched with the boss.