CN210770231U - Single-end-face mechanical sealing device for wave spring - Google Patents
Single-end-face mechanical sealing device for wave spring Download PDFInfo
- Publication number
- CN210770231U CN210770231U CN201921803425.0U CN201921803425U CN210770231U CN 210770231 U CN210770231 U CN 210770231U CN 201921803425 U CN201921803425 U CN 201921803425U CN 210770231 U CN210770231 U CN 210770231U
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- Prior art keywords
- ring
- spring
- static
- static ring
- seal
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- 238000007789 sealing Methods 0.000 title claims abstract description 19
- 230000003068 static Effects 0.000 abstract description 26
- -1 polytetrafluoroethylene Polymers 0.000 abstract description 14
- 229920001343 polytetrafluoroethylene Polymers 0.000 abstract description 14
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract description 14
- 238000009434 installation Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000010030 laminating Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 4
- 230000037250 Clearance Effects 0.000 description 2
- 230000035512 clearance Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910003465 moissanite Inorganic materials 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- UJMWVICAENGCRF-UHFFFAOYSA-N Oxygen difluoride Chemical compound FOF UJMWVICAENGCRF-UHFFFAOYSA-N 0.000 description 1
- 229920001774 Perfluoroether Polymers 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000005039 chemical industry Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Abstract
A wave spring single-end-face mechanical sealing device is characterized in that a driving part is arranged on a static ring seat, a static ring is arranged on the inner side of the driving part, a wave spring is arranged between the static ring seat and the static ring, a static ring sealing ring is arranged between the static ring and the static ring seat, a rotating ring is arranged on the right side of the static ring, and rotating ring sealing rings are arranged on the left side and the right side of the rotating ring. The utility model discloses a ripples spring keeps the sealed end face laminating between quiet ring and the rotating ring as elasticity compensating part, and the ripples spring is single curved surface ring piece, and the ripples spring has very good elasticity as spring compensating part and keeps the effect, and the elasticity of production is stable, even, moreover because adopted single curved surface ring piece, so the axial installation space demand of ripples spring is very little, has saved sealing device's axial seal installation requirement. The direct friction structural form of the existing polytetrafluoroethylene shaft seal and the shaft sleeve is changed into the relative friction between the static ring and the dynamic ring, so that the longer service life of the seal can be ensured.
Description
Technical Field
The utility model relates to a mechanical seal device especially relates to a ripples spring single-ended mechanical seal device.
Background
At present, shaft seal devices used between a pump cavity and a rotating shaft are used in the petrochemical industry and the chemical industry. In such cases, the leaked medium (fluid in the pump) is often in contact with the atmosphere, which is likely to pollute the environment and even cause serious hazards such as fire and explosion. And some users use earlier pumps, the axial installation space of the pumps is small, and the application difficulty of the serial mechanical seal is increased, so that the polytetrafluoroethylene shaft seal device is commonly used by many users at present. This kind of polytetrafluoroethylene bearing seal device is equipped with a polytetrafluoroethylene bearing seal on the pump cavity, because there is the friction between polytetrafluoroethylene bearing seal and the rotation axis, in the shorter time, polytetrafluoroethylene bearing seal will produce wearing and tearing because of the friction, cause to produce the clearance between bearing seal and the rotation axis, lead to the medium to leak, the medium directly contacts with the atmosphere, has great potential safety hazard, causes major accident easily, causes huge loss for the customer, is difficult to satisfy customer safety production's demand.
Disclosure of Invention
To the defect of traditional polytetrafluoroethylene shaft seal device, the utility model provides an axial mounting dimension is little, simple and practical, the better wave spring single-ended mechanical seal device of security.
The concrete technical measures for solving the technical problems are as follows:
a wave spring single-end-face mechanical sealing device is characterized in that: be equipped with driving medium 2 on quiet ring seat 1, quiet ring 3 is equipped with to driving medium 2 inboard, is equipped with ripples spring 4 between quiet ring seat 1 and the 3 left sides of quiet ring, is equipped with quiet ring seal 5 between 3 inboard and quiet ring seat 1 of quiet ring, is equipped with rotating ring 6 on quiet ring 3 right sides, is equipped with No. 1 rotating ring seal 7 on rotating ring 6 left sides, is equipped with No. 2 rotating ring seal 8 on rotating ring 6 right sides.
The utility model has the advantages that: the utility model discloses a ripples spring keeps the sealed terminal surface laminating between quiet ring and the rotating ring as elasticity compensation part, through interference fit between quiet ring seat and the driving medium, through the lug transmission between driving medium and the quiet ring, transmission effect safe and reliable. The mechanical seal adopts a balanced type design (the balanced type mechanical seal refers to the mechanical seal with the load coefficient less than 1), the wave spring is a single curved surface ring sheet, the wave spring is used as a spring compensation part, the elastic force maintaining effect is very good, the generated elastic force is stable and uniform, and the axial installation space requirement of the wave spring is very small due to the adoption of the single curved surface ring sheet, so that the axial seal installation requirement of the sealing device is saved. Because the direct friction structural form of the polytetrafluoroethylene shaft seal and the shaft sleeve is changed into the relative friction between the static ring and the dynamic ring, the static ring and the dynamic ring are made of the pairing material with smaller friction coefficient, the operation life of the seal can be ensured to be longer, and the requirements of customers such as chemical plants, petrochemical plants, oil refineries on the safety and the service life of the mechanical seal for the pump can be better met.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a schematic view of the overall installation structure of the present invention;
FIG. 4 is a left side view of FIG. 3;
fig. 5 is a schematic structural diagram of the wave spring of the present invention;
fig. 6 is a left side view of fig. 5.
In the figure: 1 is static ring seat, 2 is the driving medium, 3 is static ring, 4 is the ripples spring, 5 is static ring seal circle, 6 is the rotating ring, 7 is No. 1 rotating ring seal circle, 8 is No. 2 rotating ring seal circles, 9 is No. 1 axle sleeve, 10 is No. 2 axle sleeves, 11 is the pump cavity, 12 is the rotation axis.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
The utility model provides a ripples spring single-ended face mechanical seal device, as shown in fig. 1 to 6, is equipped with driving medium 2 on quiet ring seat 1, and quiet ring 3 is equipped with to driving medium 2 inboard, is equipped with ripples spring 4 between quiet ring seat 1 and quiet ring 3 left side, is equipped with quiet ring seal 5 between quiet ring 3 inboard and quiet ring seat 1, is equipped with rotating ring 6 on quiet ring 3 right side, is equipped with No. 1 rotating ring seal 7 on rotating ring 6 left side, is equipped with No. 2 rotating ring seal 8 on rotating ring 6 right side.
The utility model discloses in, high-quality corrosion-resistant stainless steel such as 304, 316 can be adopted to quiet ring seat and driving medium, and quiet ring and rotating ring can adopt impregnated resin graphite to pair with the SiC material, also can adopt SiC and YG6 material to pair, can adopt multiple outstanding wear-resisting material to pair, make sealing device have very long life. The wave spring can be made of various materials such as 304, 316, 17-7PH and the like, and the static ring sealing ring and the dynamic ring sealing ring can be made of various materials such as fluororubber, nitrile rubber, perfluoroether rubber and the like.
The utility model discloses in, quiet ring holder 1 directly passes through interference fit with pump cavity 11, guarantees to guarantee not to have relative rotation between the two, and quiet ring holder 1 directly passes through interference fit with driving medium 2, guarantees to guarantee not to have relative rotation between the two. The transmission piece 2 and the static ring are directly transmitted through the lug, and no relative rotation between the transmission piece and the static ring is ensured. The static ring 3 and the dynamic ring 6 are in relative rotation friction, the static ring 3 is a static part, the dynamic ring 6 is a rotating part, and the static ring and the dynamic ring are in rotation friction. No. 1 movable ring sealing ring 7 is arranged between the movable ring 6 and the No. 1 shaft sleeve 9, No. 2 movable ring sealing ring 8 is arranged between the movable ring 6 and the No. 2 shaft sleeve 10, and the movable ring 6 is guaranteed to rotate along with the rotating shaft 12 through relative extrusion between the No. 1 shaft sleeve 9, the No. 2 shaft sleeve 10, the No. 1 movable ring sealing ring 7 and the No. 2 movable ring sealing ring 8.
The utility model discloses the biggest advantage for original structure lies in changing into the direct friction between the polytetrafluoroethylene bearing seal of original structure and the axle sleeve and is quiet ring 3 and the direct rotatory friction of rotating ring 6. In the original structure, because the friction between polytetrafluoroethylene material and the metal material is between polytetrafluoroethylene shaft seal and the axle sleeve, polytetrafluoroethylene material can just be ground off partly in very short time, can produce the clearance between polytetrafluoroethylene shaft seal and the axle sleeve, no longer has sealed effect. The utility model discloses in adopt rotary friction between quiet ring 3 and the rotating ring 6, have ripples spring 4 as compensating part in quiet ring 3 left side, the ripples spring has very good elasticity as spring compensating part, and the elasticity that produces is stable, even. When the static ring 3 and the moving ring 6 are abraded due to friction, the static ring 3 is pushed by the spring force of the wave spring 4, so that the end faces of the static ring 3 and the moving ring 6 are still attached to each other, and the mechanical sealing device is guaranteed to still have a sealing effect. In addition, in the aspect of materials, the static ring 3 and the dynamic ring 6 are matched by high-quality wear-resistant materials, so that the friction wear between the static ring 3 and the dynamic ring 6 is far less than that between a polytetrafluoroethylene shaft and a shaft sleeve. The mechanical sealing device is guaranteed to have long service life, and the production requirement can be met. No. 1 axle sleeve 9, No. 2 axle sleeve 10, pump cavity 11 and rotation axis 12 do not belong to the utility model discloses a part is the time complex part of unit mount.
Claims (1)
1. A wave spring single-end-face mechanical sealing device is characterized in that: be equipped with driving medium (2) on quiet ring seat (1), quiet ring (3) are equipped with to driving medium (2) inboard, be equipped with ripples spring (4) between quiet ring seat (1) and quiet ring (3) left side, be equipped with quiet ring seal (5) between quiet ring (3) inboard and quiet ring seat (1), be equipped with rotating ring (6) on quiet ring (3) right side, be equipped with No. 1 rotating ring seal (7) on rotating ring (6) left side, be equipped with No. 2 rotating ring seal (8) on rotating ring (6) right side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921803425.0U CN210770231U (en) | 2019-10-25 | 2019-10-25 | Single-end-face mechanical sealing device for wave spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921803425.0U CN210770231U (en) | 2019-10-25 | 2019-10-25 | Single-end-face mechanical sealing device for wave spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210770231U true CN210770231U (en) | 2020-06-16 |
Family
ID=71040156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921803425.0U Active CN210770231U (en) | 2019-10-25 | 2019-10-25 | Single-end-face mechanical sealing device for wave spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210770231U (en) |
-
2019
- 2019-10-25 CN CN201921803425.0U patent/CN210770231U/en active Active
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| GR01 | Patent grant |