CN219827713U - Integral compensation type mechanical seal - Google Patents
Integral compensation type mechanical seal Download PDFInfo
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- CN219827713U CN219827713U CN202320363961.3U CN202320363961U CN219827713U CN 219827713 U CN219827713 U CN 219827713U CN 202320363961 U CN202320363961 U CN 202320363961U CN 219827713 U CN219827713 U CN 219827713U
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- seat
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- 238000007789 sealing Methods 0.000 claims abstract description 39
- 230000003068 static effect Effects 0.000 claims abstract description 31
- 230000017525 heat dissipation Effects 0.000 abstract description 5
- 239000012530 fluid Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000003754 machining Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Mechanical Sealing (AREA)
Abstract
The utility model discloses an integral compensation type mechanical seal, which comprises: the device comprises a cylindrical moving ring seat, a medium moving ring, a medium static ring seat and a medium static ring, wherein a fixed screw hole is formed in the cylindrical moving ring seat, a plurality of first spiral holes are formed in the side wall of the cylindrical moving ring seat at the lower side of the fixed screw hole in an equidistant and staggered mode from top to bottom along the circumference, the hole width, the arc length, the rotation direction and the helix angle of each first spiral hole are the same, the plurality of first spiral holes are arranged on the side wall of the cylindrical moving ring seat in a surrounding mode, the medium moving ring is fixedly arranged at the lower end of the cylindrical moving ring seat, the medium static ring is in sealing fit with the medium moving ring, and the medium static ring is fixedly arranged in the medium static ring seat. The utility model has the advantages that: the structure is optimized, the parts are reduced, and the accumulated error among the parts is reduced, so that the assembly precision is improved, the heat dissipation performance of the cylindrical moving ring seat is improved, and the heat generated by friction between the medium moving ring and the medium static ring is transferred to the cylindrical moving ring seat to quickly dissipate heat.
Description
Technical Field
The utility model relates to the technical field of sealing, in particular to an integral compensation type mechanical seal.
Background
Mechanical seals are devices used in various types of fluid equipment to prevent leakage of fluid. In general, a fluid device has a rotating shaft and a fluid chamber (such as a pump, a stirrer, etc.), a moving ring in a mechanical seal rotates synchronously with the rotating shaft, a stationary ring in the mechanical seal is fixed on a housing of the fluid chamber, and fluid is prevented from leaking between the rotating shaft and the housing by mutual friction after the moving ring is attached to the stationary ring. The conventional mechanical seal currently on the market is shown in fig. 1, and includes: the spring seat 1, the lower extreme slip at spring seat 1 is provided with push ring 11, a plurality of springs 12 have been equispaced along the circumference between spring seat 1 and push ring 11, be connected with movable ring seat 13 on push ring 11, be provided with sealing washer 14 between movable ring seat 13 and push ring 12, fixed movable ring 15 has on movable ring seat 13, seal fit has quiet ring 16 on movable ring 15, quiet ring 16 sets firmly on quiet ring seat 17, in the during operation, fix quiet ring seat 17 on the casing, fix spring seat 1 on the rotation axis, spring 12 exerts axial load through elasticity for movable ring 15, make movable ring 15 and quiet ring 16 cooperate and play sealed effect, this kind of traditional mechanical seal is with spring 12 as compensation mechanism to play the compensation effect to movable ring 15. However, the mechanical seal of this construction has the following drawbacks: 1. the number of parts to be assembled is large, the disassembly and assembly work is complicated, the production efficiency is reduced, the workers are required to have extremely high precision installation capacity, certain machining errors exist in the machining process of the parts, and when the number of parts to be assembled is large, the more the machining errors are accumulated together, so that the assembly precision of the mechanical seal is easily reduced; 2. the pitch gap of the spring 12 placed in the mechanical seal is small, and the spring is easy to fail due to the blockage of impurities after long-time use, so that sufficient compensation force cannot be provided for the movable ring 15, and the seal between the movable ring 15 and the stationary ring 16 is easy to fail; 3. because the moving ring part of the whole mechanical seal is not of an integrated structure, the contact surface between the moving ring seat and the spring seat is small, heat generated by friction on the moving ring cannot be quickly transferred to the spring seat for heat dissipation through the moving ring seat, and the heat is accumulated on the moving ring for a long time, so that the service life of the moving ring is reduced.
Disclosure of Invention
The utility model aims to provide an integral compensation type mechanical seal which is simple in structure, convenient to install and good in heat dissipation effect.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: an integral compensation type mechanical seal comprising: the device comprises a cylindrical moving ring seat, a medium moving ring, a medium static ring seat and a medium static ring, wherein a fixed screw hole is formed in the cylindrical moving ring seat, a plurality of first spiral holes are formed in the side wall of the cylindrical moving ring seat at the lower side of the fixed screw hole in an equidistant and staggered mode from top to bottom along the circumference, the hole width, the arc length, the rotation direction and the helix angle of each first spiral hole are the same, the plurality of first spiral holes are arranged on the side wall of the cylindrical moving ring seat in a surrounding mode, the medium moving ring is fixedly arranged at the lower end of the cylindrical moving ring seat, the medium static ring is in sealing fit with the medium moving ring, and the medium static ring is fixedly arranged in the medium static ring seat.
Further, in the integral compensation mechanical seal, a medium moving ring groove is formed in the lower end of the cylindrical moving ring seat, the medium moving ring is in interference fit with the medium moving ring groove, a medium static ring groove is formed in the upper end of the medium static ring seat, and the medium static ring is in interference fit with the medium static ring groove.
Further, in the integral compensation mechanical seal, a first inner sealing ring is arranged on the inner wall, close to the medium moving ring groove, in the cylindrical moving ring seat, and a first outer sealing ring is arranged on the outer side wall of the medium static ring seat.
Furthermore, in the integral compensation mechanical seal, two fastening screw holes are symmetrically arranged on the cylindrical movable ring seat.
Furthermore, in the integral compensation mechanical seal, a plurality of second spiral holes are arranged on the side wall of the cylindrical movable ring seat positioned on the upper side of the fixed screw hole in an equidistance and staggered manner from bottom to top along the circumference, the hole width, the arc length, the rotation direction and the spiral angle of each second spiral hole are the same, and the second spiral holes and the first spiral holes are symmetrically arranged with the fixed screw hole as a center.
Further, the above-mentioned integral compensation type mechanical seal, wherein, be provided with the air side dynamic ring groove in the upper end of cylindricality movable ring seat, interference fit is provided with the air side movable ring in the air side dynamic ring groove, and sealing fit is provided with the air side quiet ring on the air side movable ring, and the air side quiet ring interference fit sets up in the air side quiet ring.
Further, in the above-mentioned integral compensation mechanical seal, a second inner seal ring is disposed on an inner wall of the cylindrical moving ring seat, which is close to the air side moving ring groove, and two second outer seal rings are disposed on an outer side wall of the air side stationary ring seat.
The utility model has the advantages that: a plurality of first spiral holes are formed in the cylindrical moving ring seat at equal intervals from top to bottom along the circumference in a staggered manner, so that the cylindrical moving ring seat is provided with elasticity, then the cylindrical moving ring seat is directly connected with the rotating shaft, and even axial compensation force is applied to the medium moving ring through the elasticity of the cylindrical moving ring seat, so that the medium moving ring is in sealing fit with the medium static ring, thus parts such as a push ring, a spring and a spring seat for installing the push ring and the spring are omitted, the structure is greatly optimized, the installation is convenient, the accumulated error between the parts during assembly can be reduced, and the assembly precision is improved; the pitch between the first spiral holes on the cylindrical moving ring seat is larger, the situation of blockage is difficult to occur, and the cylindrical moving ring seat can play a role in compensating the medium moving ring sufficiently, so that the sealing effect between the medium moving ring and the medium static ring is ensured; the heat generated by friction between the medium movable ring and the medium static ring is transferred to the cylindrical movable ring seat to rapidly dissipate heat, and the cylindrical movable ring seat is provided with a plurality of first spiral holes to improve the heat dissipation surface of the cylindrical movable ring seat, so that the heat dissipation effect is further improved.
Drawings
Fig. 1 is a schematic cross-sectional view of a conventional mechanical seal.
Fig. 2 is a schematic perspective view of a first embodiment of an integral compensation mechanical seal according to the present utility model.
Fig. 3 is a schematic plan view of the structure of fig. 2.
Fig. 4 is a schematic view of the cross-sectional structure in the direction A-A in fig. 3.
Fig. 5 is a schematic perspective view of a second embodiment of an integral compensation mechanical seal according to the present utility model.
Fig. 6 is a schematic plan view of fig. 5.
Fig. 7 is a schematic view of the sectional structure in the direction B-B in fig. 6.
Detailed Description
The technical scheme of the utility model is further described below with reference to the attached drawings and the preferred embodiments.
Example 1
As shown in fig. 2, 3 and 4, the integral compensation type mechanical seal according to the present utility model comprises: the medium static ring seat 2 is symmetrically provided with two fixed screw holes, a plurality of first spiral holes 21 are arranged on the side wall of the cylindrical moving ring seat 2 positioned at the lower side of the fixed screw holes in an equidistant and staggered mode from top to bottom along the circumference, the hole width, the arc length, the rotation direction and the spiral angle of each first spiral hole 21 are the same, the plurality of first spiral holes 21 are arranged on the side wall of the cylindrical moving ring seat 2 in a surrounding mode, the cylindrical moving ring seat 2 is provided with elastic force through the plurality of first spiral holes 21 arranged on the side wall of the cylindrical moving ring seat 2 in an equidistant and staggered mode, the medium moving ring groove is arranged at the lower end of the cylindrical moving ring seat 2, the medium moving ring groove is provided with the medium moving ring 3 in an interference mode, the medium static ring 5 is arranged on the inner wall of the cylindrical moving ring seat 2 in a staggered mode, the medium static ring 5 is fixedly arranged in the medium moving ring seat 4 in a sealed mode, the medium static ring 5 is arranged at the upper end of the medium static ring seat 4 in a staggered mode, and the medium static ring 5 is in a staggered mode, and the medium static ring 41 is arranged on the outer ring groove 41.
During installation, the medium stationary ring seat 4 is fixed on the shell and is in sealing connection with an end face, close to a medium side, in the shell through the first outer sealing ring 41, the cylindrical movable ring seat 2 is sleeved on the rotating shaft, the cylindrical movable ring seat 2 is pressed downwards towards the medium stationary ring seat 4, elastic potential energy is stored in the cylindrical movable ring seat 2, the two fixing bolts 23 are respectively connected with two fixing screw holes in a threaded mode, the two fixing bolts 23 abut against the rotating shaft, the cylindrical movable ring seat 2 is fixed on the rotating shaft, the cylindrical movable ring seat 2 is in sealing connection with the rotating shaft through the first inner sealing ring 22, the medium movable ring 3 is in sealing fit with the medium stationary ring 5 after being subjected to enough downward compensation force under the elastic force of the cylindrical movable ring seat 2, finally, the shell cover is installed on the shell and abuts against the cylindrical movable ring seat 2 through a bearing, interference of the cylindrical movable ring seat 2 is prevented, when the rotating shaft rotates, the cylindrical movable ring seat 2 and the medium movable ring 3 are driven to rotate together, and the rotating medium movable ring 3 and the medium stationary ring 5 are mutually rubbed to form a sealing surface.
Example two
As shown in fig. 5, 6 and 7, the difference between the present embodiment and the first embodiment is that: a plurality of second spiral holes 24 are arranged on the side wall of the cylindrical movable ring seat 2 positioned on the upper side of the tightly fixed screw hole at equal intervals from bottom to top along the circumference, the hole width, the arc length, the rotation direction and the spiral angle of each second spiral hole 24 are the same, the second spiral holes 24 and the first spiral holes 21 are symmetrically arranged with the tightly fixed screw hole as the center, so that the cylindrical movable ring seat 2 is conveniently machined, the second spiral holes 24 and the first spiral holes 21 are circumferentially arranged on the side wall of the cylindrical movable ring seat 2, in this way, the upper end and the lower end of the cylindrical movable ring seat 2 are provided with elastic forces, the upper end of the cylindrical movable ring seat 2 is provided with an atmosphere side movable ring groove, the atmosphere side movable ring 6 is arranged in the atmosphere side movable ring groove in an interference fit manner, the atmosphere side movable ring 7 is fixedly arranged in the atmosphere side movable ring seat 8, the lower end of the atmosphere side movable ring seat 8 is provided with an atmosphere side movable ring groove, the atmosphere side movable ring 7 is arranged in the atmosphere side movable ring seat, the two outer side walls of the cylindrical movable ring seat 2 are close to the atmosphere side movable ring seat 25, and the outer side walls of the cylindrical movable ring seat 25 are arranged on the two outer side walls of the cylindrical movable ring seat 25.
During installation, the medium stationary ring seat 4 is fixed on the end face, close to the medium side, of the shell and is in sealing connection with the rotating shaft through the first outer sealing ring 41, then the cylindrical movable ring seat 2 is sleeved on the rotating shaft, the cylindrical movable ring seat 2 is pressed downwards towards the medium stationary ring 4, elastic potential energy is stored in the part, which is arranged below the cylindrical movable ring seat 2, of the first spiral hole 21, a fixing bolt 23 is in threaded connection with the two fixing bolts respectively, the two fixing bolts 23 abut against the rotating shaft, the cylindrical movable ring seat 2 is fixed on the rotating shaft, the cylindrical movable ring seat 2 and the rotating shaft form sealing connection through the first inner sealing ring 22 and the second inner sealing ring 25, the cylindrical movable ring 3 is in sealing fit with the medium stationary ring 5 after enough downward compensating force is obtained under the elastic force of the cylindrical movable ring seat 2, then the atmospheric stationary ring seat 8 is fixed on the shell, the atmospheric stationary ring seat 8 is in sealing connection with the shell cover through the two second outer sealing rings 81, the shell cover is fixed on the end face, close to the atmospheric side of the shell, the atmospheric side ring seat 8 is in contact with the atmospheric side 7, the atmospheric side 7 is in contact with the cylindrical movable ring seat 6 through the second outer sealing ring 81, the atmospheric side 6 is in sealing fit with the cylindrical movable ring seat 6, and the atmospheric side 6 is in sealing force is applied to the cylindrical movable ring seat 6, and the atmospheric side is in sealing ring 6 is in sealing contact with the cylindrical movable ring 6, and the atmospheric side 6 is in sealing side contact with the atmospheric side 6. When the rotating shaft rotates, the cylindrical movable ring seat 2, the medium movable ring 3 and the atmosphere side movable ring 6 are driven to rotate together, the rotating medium movable ring 3 and the medium stationary ring 5 are rubbed with each other to form a sealing surface, the rotating atmosphere side movable ring 6 and the atmosphere side stationary ring 7 are rubbed with each other to form a sealing surface, and the atmosphere side movable ring 6 and the atmosphere side stationary ring 7 which are in sealing fit are additionally arranged, so that the sealing performance and the service life of the mechanical seal can be improved, the evacuation preventing capability of the mechanical seal can be improved, and the application range of the mechanical seal can be increased.
In the utility model, the processing parameters such as the width, the number, the spiral angle and the like of the first spiral hole 21 and the second spiral hole 24 influence the elasticity of the cylindrical movable ring seat 2, the size of the elasticity is required to be selected according to the contact area between the movable ring and the stationary ring in the mechanical seal, the friction surface area S is calculated through the inner diameter and the outer diameter of the friction surface between the movable ring and the stationary ring, then the required total elasticity value F is calculated according to the friction area, the elasticity modulus of the material for manufacturing the cylindrical movable ring seat 2 is firstly input into the finite element analysis module of SolidWorks, then the different elasticity values are calculated by inputting the width, the number and the spiral angle of different spiral holes, and when one elasticity value is close to the total elasticity value F, the processing parameters required by processing are calculated by calculating the width, the number and the spiral angle data of the spiral holes of the elasticity values, and in the process of calculation and the processing are not required, and only the rotation direction of each spiral hole is required to be consistent.
Finally, it should be noted that: the above embodiments are only for illustrating the technical aspects of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the above embodiments, it should be understood by those of ordinary skill in the art that: modifications and equivalents may be made to the specific embodiments of the utility model without departing from the spirit and scope of the utility model, which is intended to be covered by the claims.
Claims (7)
1. An integral compensation type mechanical seal is characterized in that: comprising the following steps: the device comprises a cylindrical moving ring seat, a medium moving ring, a medium static ring seat and a medium static ring, wherein a fixed screw hole is formed in the cylindrical moving ring seat, a plurality of first spiral holes are formed in the side wall of the cylindrical moving ring seat at the lower side of the fixed screw hole in an equidistant and staggered mode from top to bottom along the circumference, the hole width, the arc length, the rotation direction and the helix angle of each first spiral hole are the same, the plurality of first spiral holes are arranged on the side wall of the cylindrical moving ring seat in a surrounding mode, the medium moving ring is fixedly arranged at the lower end of the cylindrical moving ring seat, the medium static ring is in sealing fit with the medium moving ring, and the medium static ring is fixedly arranged in the medium static ring seat.
2. An integrally compensating mechanical seal as claimed in claim 1, wherein: the lower end of the cylindrical movable ring seat is provided with a medium movable ring groove, the medium movable ring is arranged in the medium movable ring groove in an interference fit manner, the upper end of the medium stationary ring seat is provided with a medium stationary ring groove, and the medium stationary ring is arranged in the medium stationary ring groove in an interference fit manner.
3. An integrally compensating mechanical seal as claimed in claim 2, wherein: the inner wall of the cylindrical movable ring seat, which is close to the medium movable ring groove, is provided with a first inner sealing ring, and the outer side wall of the medium stationary ring seat is provided with a first outer sealing ring.
4. An integrally compensating mechanical seal as claimed in claim 1, wherein: two fastening screw holes are symmetrically arranged on the cylindrical movable ring seat.
5. An integrally compensating mechanical seal according to any of claims 1-4, characterized in that: a plurality of second spiral holes are arranged on the side wall of the cylindrical movable ring seat positioned on the upper side of the fixed screw hole in an equidistance and staggered mode from bottom to top along the circumference, the hole width, the arc length, the rotation direction and the spiral angle of each second spiral hole are the same, and the second spiral holes and the first spiral holes are symmetrically arranged with the fixed screw hole as a center.
6. An integrally compensating mechanical seal as claimed in claim 5, wherein: the upper end of the cylindrical movable ring seat is provided with an atmosphere side movable ring groove, the atmosphere side movable ring is arranged in the atmosphere side movable ring groove in an interference fit manner, the atmosphere side movable ring is provided with an atmosphere side stationary ring in a sealing fit manner, and the atmosphere side stationary ring is arranged in the atmosphere side stationary ring in an interference fit manner.
7. The integral compensation type mechanical seal of claim 6, wherein: the inner wall of the cylindrical movable ring seat, which is close to the air side movable ring groove, is provided with a second inner sealing ring, and the outer side wall of the air side stationary ring seat is provided with two second outer sealing rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320363961.3U CN219827713U (en) | 2023-03-02 | 2023-03-02 | Integral compensation type mechanical seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320363961.3U CN219827713U (en) | 2023-03-02 | 2023-03-02 | Integral compensation type mechanical seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219827713U true CN219827713U (en) | 2023-10-13 |
Family
ID=88280673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320363961.3U Active CN219827713U (en) | 2023-03-02 | 2023-03-02 | Integral compensation type mechanical seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219827713U (en) |
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2023
- 2023-03-02 CN CN202320363961.3U patent/CN219827713U/en active Active
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