CN208185472U - A kind of underflow mechanical seal changing axial force - Google Patents
A kind of underflow mechanical seal changing axial force Download PDFInfo
- Publication number
- CN208185472U CN208185472U CN201820476174.9U CN201820476174U CN208185472U CN 208185472 U CN208185472 U CN 208185472U CN 201820476174 U CN201820476174 U CN 201820476174U CN 208185472 U CN208185472 U CN 208185472U
- Authority
- CN
- China
- Prior art keywords
- spring
- ring
- underflow
- axial force
- axle sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of underflow mechanical seals for changing axial force, including axle sleeve, the side of the outside of axle sleeve is coated with stationary ring, the outside of stationary ring is coated with gland, the surface of gland is provided with pump bolt hole, the side of stationary ring is provided with rotating ring, and the side of rotating ring is provided with spring, and the side of spring is provided with spring base.The utility model passes through setting pump bolt hole and spring, pumping bolt, underflow flow liquid can be discharged from the inside of pump bolt hole, can prolonged mechanical sealing element sealing surface service life, axial force can be changed in spring, to make end face start, good engagement is able to maintain when parking and pressure medium fluctuation, it is used to overcome the frictional force between auxiliary seal ring and axis simultaneously, it is axially moveable rotating ring, to compensate the gap formed after end wear, to guarantee the reliability of sealing, whole process is without artificial installation error, and it removes conveniently, it is easy to be rebuild outside the venue, maintenance cost is low.
Description
Technical field
The utility model relates to a kind of mechanical sealing member, in particular to a kind of underflow special-purpose machinery for changing axial force
Sealing.
Background technique
In all kinds of drum pumps of trandfer fluid medium, in order to prevent fluid media (medium) along pump case and high-speed rotating pump shaft it
Between gap leak out, mechanical seal usually can be arranged in people between pump case and pump shaft.Conventional mechanical seal is wrapped
The components contained are generally relatively more, and are all bulk types, and in other words, the components that mechanical seal is included are before being not used
All be it is separated from each other, when user purchase after, usually the components at the scene separating these is also needed to install one by one
Between pump shaft and pump case, i.e., mechanical seal is assembled, but on-site assembly mechanical seal is often due to components are too many
Certain trouble is brought to installation, and the mechanical seal of existing underflow pump is easy to seal and fail, and underflow fluid media (medium) is caused to let out
Leakage, causes mechanical seal to lose the function of sealing.
Utility model content
The technical problems to be solved in the utility model is to overcome the deficiencies of existing technologies, and provides a kind of change axial force
Underflow mechanical seal, by setting pump bolt hole and spring, pump bolt can be by underflow flow liquid from the inside of pump bolt hole
Discharge, can prolonged mechanical sealing element sealing surface service life, spring can generate certain preload pressure to seal face, can
Change axial force, so that end face be made to be able to maintain good engagement when starting and stopping and pressure medium fluctuate, is used to simultaneously
Overcome the frictional force between auxiliary seal ring and axis, is axially moveable rotating ring, to compensate the gap formed after end wear, this
Outside, also certain buffer function can have been vibrated caused by bounce to axis etc., to guarantee the reliability of sealing, whole process is not
It needs installation personnel to carry out any adjustment to mechanical seal, without artificial installation error, and removes conveniently, be easy to carry out over-the-counter whole
It repairs, maintenance cost is low.
In order to solve the above-mentioned technical problem, the utility model provides the following technical solution:
A kind of underflow mechanical seal for changing axial force of the utility model, including axle sleeve, the axle sleeve it is outer
The side in portion is coated with stationary ring, and the outside of the stationary ring is coated with gland, and the surface of the gland is provided with pump bolt hole, described
The side of stationary ring is provided with rotating ring, and the side of the rotating ring is provided with spring, and the side of the spring is provided with spring base.
As a kind of optimal technical scheme of the utility model, the axle sleeve and rotating ring, stationary ring and gland, spring base and axis
Auxiliary seal ring is provided between set.
As a kind of optimal technical scheme of the utility model, fixed between the spring base and axle sleeve by fastening screw
Connection.
As a kind of optimal technical scheme of the utility model, connect between the stationary ring and gland by the way that stop pin is fixed
It connects.
As a kind of optimal technical scheme of the utility model, the auxiliary seal ring is made by silastic material.
As a kind of optimal technical scheme of the utility model, the gland, axle sleeve, stationary ring and rotating ring are by high-chromium wear-resistant
Alloy material is made.
Compared with prior art, the beneficial effects of the utility model are as follows:
The utility model is a kind of underflow mechanical seal for changing axial force, passes through setting pump bolt hole and bullet
Spring, pump bolt can by underflow flow liquid from pump bolt hole inside be discharged, can prolonged mechanical sealing element sealing surface service life,
Spring can generate certain preload pressure to seal face, axial force can be changed, to make end face in starting and stopping and Jie
It is able to maintain good engagement when matter pressure oscillation, while being used to overcome the frictional force between auxiliary seal ring and axis, makes rotating ring edge
Axial movement, to compensate the gap formed after end wear, in addition, can also vibrate delaying centainly caused by bounce to axis etc.
Punching effect, to guarantee the reliability of sealing, whole process does not need installation personnel and carries out any adjustment to mechanical seal, nobody
It for installation error, and removes convenient, is easy to be rebuild outside the venue, maintenance cost is low.
Detailed description of the invention
Attached drawing is used to provide a further understanding of the present invention, and constitutes part of specification, practical with this
Novel embodiment is used to explain the utility model together, does not constitute limitations of the present invention.In the accompanying drawings:
Fig. 1 is the overall structure diagram of the utility model；
In figure: 1, axle sleeve；2, stationary ring；3, gland；4, bolt hole is pumped；5, rotating ring；6, spring；7, spring base；8, it assists close
Seal；9, fastening screw；10, stop pin.
Specific embodiment
It is illustrated below in conjunction with preferred embodiment of the attached drawing to the utility model, it should be understood that described herein excellent
It selects embodiment to be only used for describing and explaining the present invention, is not used to limit the utility model.Wherein identical mark in attached drawing
Number all refer to identical component.
In addition, if the detailed description of known technology is characterized in the utility model unnecessary, then omit it.
It should be noted that word "front", "rear" used in the following description, "left", "right", "up" and "down" refer in attached drawing
Direction, word "inner" and "outside" refer respectively to the direction towards or away from geometric center of specific component.
Embodiment 1
As shown in Figure 1, the utility model provides a kind of underflow mechanical seal for changing axial force, including axle sleeve
1, the side of the outside of axle sleeve 1 is coated with stationary ring 2, and the outside of stationary ring 2 is coated with gland 3, and the surface of gland 3 is provided with pump bolt
Hole 4, the side of stationary ring 2 are provided with rotating ring 5, and the side of rotating ring 5 is provided with spring 6, and the main function of spring 6 is to seal face
Certain preload pressure is generated, so that end face is able to maintain good engagement when starting and stopping and pressure medium fluctuate, is used to simultaneously
Overcome the frictional force between auxiliary seal ring and axis, is axially moveable rotating ring 5, to compensate the gap formed after end wear,
In addition, also certain buffer function can have been vibrated caused by bounce to axis etc., thus guarantee the reliability of sealing, spring 6
Side is provided with spring base 7.
Further, auxiliary seal is provided between axle sleeve 1 and rotating ring 5, stationary ring 2 and gland 3, spring base 7 and axle sleeve 1
Circle 8, auxiliary seal ring 8 plays the role of auxiliary seal, keeps the sealing effect of mechanical sealing member more preferable.
It is fixedly connected between spring base 7 and axle sleeve 1 by fastening screw 9, fastening screw 9 is tight by spring base 7 and axle sleeve 1
Gu and preventing spring base 7 and axle sleeve 1 from occurring to influence sealing effect with respect to sliding.
It is fixedly connected between stationary ring 2 and gland 3 by stop pin 10, stationary ring 2 passes through 10 anti-rotation of stop pin.
Auxiliary seal ring 8 is made by silastic material, and silicon rubber has much better heat resistance than General Purpose Rubber, can
It is almost used forever without performance change under 150 °, can be used continuously 10000 hours under 200 °, also can be used under 350 °
For a period of time, there is fabulous sealing performance.
Gland 3, axle sleeve 1, stationary ring 2 and rotating ring 5 are made by high-chromium wear-resistant alloy material, and wear-resisting property is good, sealing
The part service life is high.
Specifically, first by 2 sets of the stationary ring surfaces in axle sleeve 1, then stationary ring 2 and gland 3 are passed through into stop pin 10 and fix group
Dress, forming static components connect rotating ring 5 closely with stationary ring 2, in the other end of rotating ring 5 on 5 sets of the rotating ring surfaces in axle sleeve 1
Spring 6 is installed, the other end of spring 6 installs spring base 7, that is, completes mechanical seal, axle sleeve 1 and gland 3 as packaging type
Installation, the inside of bolt insertion pump bolt hole 4, that is, complete the mechanical seal of pump, wherein pump bolt is acted on by revolving speed, can be by
Underflow flow liquid is discharged from the inside of pump bolt hole 4, can prolonged mechanical sealing element sealing surface service life, and spring 6 can be right
Seal face generates certain preload pressure, axial force can be changed, to make end face in starting and stopping and pressure medium wave
It is able to maintain good engagement when dynamic, while being used to overcome the frictional force between auxiliary seal ring and axis, makes rotating ring 5 along axial shifting
It is dynamic, to compensate the gap formed after end wear, in addition, can also vibrate certain buffering work caused by bounce to axis etc.
With to guarantee the reliability of sealing, whole process does not need installation personnel and carries out any adjustment to mechanical seal, without artificial peace
Error is filled, and is removed conveniently, is easy to be rebuild outside the venue, maintenance cost is low.
For the utility model by setting pump bolt hole 4 and spring 6, pump bolt can be by underflow flow liquid out of pump bolt hole 4
Portion's discharge, can prolonged mechanical sealing element sealing surface service life, spring 6 can generate certain pre- press to seal face
Axial force can be changed in power, to make end face be able to maintain good engagement when starting and stopping and pressure medium fluctuate, together
When for overcoming the frictional force between auxiliary seal ring and axis, be axially moveable rotating ring 5, formed after end wear with compensating
Gap, in addition, also certain buffer function can have been vibrated caused by bounce to axis etc., thus guarantee the reliability of sealing, it is whole
A process does not need installation personnel and carries out any adjustment to mechanical seal, without artificial installation error, and removes conveniently, is easy to carry out
Over-the-counter trimming, maintenance cost are low.
Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention, it is not limited to this
Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art
For, it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic
It is equivalently replaced.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on,
It should be included within the scope of protection of this utility model.
Claims (6)
1. a kind of underflow mechanical seal for changing axial force, including axle sleeve (1), which is characterized in that the axle sleeve (1)
The side of outside be coated with stationary ring (2), the outside of the stationary ring (2) is coated with gland (3), and the surface of the gland (3) is set
It is equipped with pump bolt hole (4), the side of the stationary ring (2) is provided with rotating ring (5), and the side of the rotating ring (5) is provided with spring
(6), the side of the spring (6) is provided with spring base (7).
2. a kind of underflow mechanical seal for changing axial force according to claim 1, which is characterized in that described
Auxiliary seal ring is provided between axle sleeve (1) and rotating ring (5), stationary ring (2) and gland (3), spring base (7) and axle sleeve (1)
(8).
3. a kind of underflow mechanical seal for changing axial force according to claim 1, which is characterized in that described
It is fixedly connected between spring base (7) and axle sleeve (1) by fastening screw (9).
4. a kind of underflow mechanical seal for changing axial force according to claim 1, which is characterized in that described
It is fixedly connected between stationary ring (2) and gland (3) by stop pin (10).
5. a kind of underflow mechanical seal for changing axial force according to claim 2, which is characterized in that described
Auxiliary seal ring (8) is made by silastic material.
6. a kind of underflow mechanical seal for changing axial force according to claim 1, which is characterized in that described
Gland (3), axle sleeve (1), stationary ring (2) and rotating ring (5) are made by high-chromium wear-resistant alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820476174.9U CN208185472U (en) | 2018-04-04 | 2018-04-04 | A kind of underflow mechanical seal changing axial force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820476174.9U CN208185472U (en) | 2018-04-04 | 2018-04-04 | A kind of underflow mechanical seal changing axial force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208185472U true CN208185472U (en) | 2018-12-04 |
Family
ID=64436258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820476174.9U Expired - Fee Related CN208185472U (en) | 2018-04-04 | 2018-04-04 | A kind of underflow mechanical seal changing axial force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208185472U (en) |
-
2018
- 2018-04-04 CN CN201820476174.9U patent/CN208185472U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181204 Termination date: 20190404 |