CN216843100U - Piston rod sealing device of homogenizer - Google Patents
Piston rod sealing device of homogenizer Download PDFInfo
- Publication number
- CN216843100U CN216843100U CN202122876940.5U CN202122876940U CN216843100U CN 216843100 U CN216843100 U CN 216843100U CN 202122876940 U CN202122876940 U CN 202122876940U CN 216843100 U CN216843100 U CN 216843100U
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- Prior art keywords
- double
- piston rod
- lip
- sealing
- lip seals
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- 238000007789 sealing Methods 0.000 title claims abstract description 46
- 230000000694 effects Effects 0.000 abstract description 10
- 238000009434 installation Methods 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 16
- 239000000498 cooling water Substances 0.000 description 9
- 239000010687 lubricating oil Substances 0.000 description 9
- 238000012864 cross contamination Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 229920001973 fluoroelastomer Polymers 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
- 230000000704 physical effect Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Sealing Devices (AREA)
Abstract
The utility model discloses a piston rod sealing device of a homogenizer, which comprises two double-lip seals (5) and an oil seal seat (4), wherein the two double-lip seals (5) are respectively arranged between two cavities in a box body (1) through the oil seal seat (4); the two double-lip seals (5) are symmetrically and coaxially arranged on the piston rod (2), the inner rings of the double-lip seals (5) are provided with two symmetrical sealing lips (51), the inner ring of the oil seal seat (4) is provided with an installation groove (41), so that the double-lip seals (5) can be assembled in the installation groove (41), and the sealing lips (51) can be tightly pressed on the surface of the piston rod (2). The utility model can optimize the sealing effect of the piston and prolong the service life of the sealing ring.
Description
Technical Field
The utility model relates to a part for a homogenizer, in particular to a piston rod sealing device for the homogenizer.
Background
The piston is a moving component in the homogenizer, and in the process that the piston rod reciprocates in the box body along the axial direction through the sealing structure, please refer to fig. 1, the working principle of the sealing structure of the piston rod of the homogenizer in the prior art is as follows: two cavities are formed in the box body 1 along the axial direction of the piston rod 2, the cavity on the right side of the figure provides circulating lubricating oil for the surface of the rear end of the piston rod 2, and the cavity on the left side of the figure provides cooling water for the surface of the front end of the piston rod 2, so that the lubricating effect of the piston rod 2 during reciprocating motion along the axial direction is ensured. In order to prevent the piston rod 2 from carrying cooling water and lubricating oil in the two cavities into each other in the axial reciprocating motion and causing unnecessary trouble due to mutual pollution, framework seals 3 are arranged between the two cavities and the piston rod 2, and the two framework seals 3 are symmetrically arranged in the box body 1 through oil seal seats 4 and used for blocking cross pollution of the cooling water and the lubricating oil.
The skeleton seal material of prior art is mostly polytetrafluoroethylene and fluororubber, but along with the extension of live time, the elasticity of both materials can weaken, and the lip seal effect also can weaken thereupon, simultaneously, also causes the lip damage easily in the installation and leads to sealing not tight or directly reveal. In addition, the framework in the prior art has larger sealing volume, and the correspondingly processed oil seal seat has larger volume, which is not beneficial to the processing and cost control of the oil seal seat.
Disclosure of Invention
The utility model aims to provide a piston rod sealing device of a homogenizer, which can optimize the sealing effect of a piston and prolong the service life of a sealing ring.
The utility model is realized in the following way:
a piston rod sealing device of a homogenizer comprises two double-lip seals and an oil seal seat, wherein the two double-lip seals are respectively arranged between two cavities in a box body through the oil seal seat; the two double-lip seals are symmetrically and coaxially arranged on the piston rod, the inner ring of the double-lip seal is provided with two symmetrical sealing lips, and the inner ring of the oil seal seat is provided with a mounting groove, so that the double-lip seal can be assembled in the mounting groove, and the sealing lips can be tightly pressed on the surface of the piston rod.
The section of the inner ring of the double-lip seal is of a cambered surface structure, so that a sealing cavity is formed between two sealing lips of the double-lip seal and the surface of the piston rod.
The section of the mounting groove of the oil seal seat is of a concave structure, so that the double-lip seal can be stably assembled in the mounting groove.
Compared with the prior art, the utility model has the following beneficial effects:
1. the double-lip seal structure has the advantages that the double-lip seal structure is provided with the two symmetrically arranged double-lip seals, so that a double-seal effect can be realized on the piston rod, an effective seal barrier is formed between cavities of cooling water and lubricating oil, the cooling water and the lubricating oil are prevented from cross contamination when the piston rod axially reciprocates, and the service life of the seal ring is prolonged.
2. The double-lip sealing ring has the advantages that the sealing effect is ensured through double-lip sealing, and meanwhile, the size of the double-lip sealing ring is small, so that the size of the oil seal seat can be correspondingly reduced, and the material cost and the processing cost of the oil seal seat are favorably reduced.
Drawings
FIG. 1 is a cross-sectional view of a prior art homogenizer piston skeleton seal structure;
FIG. 2 is a cross-sectional view of the piston rod sealing device of the homogenizer;
fig. 3 is a cross-sectional view of a double lip seal in a homogenizer piston rod seal device of the present invention.
In the figure, 1 a box body, 2 a piston rod, 3 a framework seal, 4 an oil seal seat, 41 an installation groove, 5 a double-lip seal and 51 a sealing lip.
Detailed Description
The utility model is further described with reference to the following figures and specific examples.
Referring to fig. 2 and fig. 3, a piston rod sealing device for a homogenizer comprises two double-lip seals 5 and an oil seal seat 4, wherein the two double-lip seals 5 are respectively installed between two cavities in a box body 1 through the oil seal seat 4; the two double-lip seals 5 are symmetrically and coaxially arranged on the piston rod 2, the two symmetrical seal lips 51 are arranged on the inner ring of the double-lip seal 5, the mounting groove 41 is formed in the inner ring of the oil seal seat 4, so that the double-lip seal 5 can be stably assembled in the mounting groove 41, and the seal lips 51 can be tightly pressed on the surface of the piston rod 2. The double-lip seal 5 has the advantages that the two sealing lips 51 on the inner ring of the double-lip seal 5 form double-layer seal for the piston rod 2, so that the sealing effect is effectively improved, meanwhile, the double-lip seal 5 is small in size, and the size of the corresponding oil seal seat 4 can be reduced accordingly.
The inner circle cross-section of the double-lip seal 5 is of an arc surface structure, a sealing cavity is formed between two sealing lips 51 in the inner circle of the double-lip seal 5 and the surface of the piston rod 2, the double-layer sealing effect of the two sealing lips 51 on the surface of the piston rod 2 can be guaranteed, certain compressive deformation resistance is achieved, the cavity is utilized to meet deformation after compression, the two sealing lips 51 can be sealed on the surface of the piston rod 2 all the time, the sealing effect of the two sealing lips 51 on the piston rod 2 is further guaranteed, and cross contamination of cooling water and lubricating oil is prevented.
The section of the mounting groove 41 of the oil seal seat 4 is of a concave structure, so that the double-lip seal 5 can be stably assembled in the mounting groove 41, the double-lip seal 5 is always kept stable when the piston rod 2 axially reciprocates, and the sealing effect of the double-lip seal 5 is guaranteed.
The two double-lip seals 5 are symmetrically arranged, so that cross contamination of cooling water and lubricating oil during movement of the piston rod 2 is effectively prevented.
The working principle of the utility model is as follows: two cavities are formed in the box body 1 along the axial direction of the piston rod 2, the cavity on the right side shown in the attached drawing 2 provides circulating lubricating oil for the surface of the rear end of the piston rod 2, and the cavity on the left side shown in the attached drawing 2 provides cooling water for the surface of the front end of the piston rod 2, so that the lubricating effect of the piston rod 2 in the axial reciprocating motion is ensured. When the piston rod 2 reciprocates along the axial direction, the two symmetrically arranged double-lip seals 5 play a double-sealing effect on the piston rod 2 through the 4 sealing lips 51, so that the cross contamination of lubricating oil and cooling water in the cavity is effectively prevented when the piston rod 2 moves.
Preferably, the double-lip seal 5 is made of a full-butyronitrile rubber material, has chemical and physical properties of oil resistance, wear resistance, toughness durability and the like, and greatly prolongs the service life of the double-lip seal 5.
The present invention is not limited to the above embodiments, and therefore, any modifications, equivalents, improvements, etc. within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (3)
1. A homogenizer piston rod sealing device is characterized in that: the double-lip seal structure comprises two double-lip seals (5) and an oil seal seat (4), wherein the two double-lip seals (5) are respectively installed between two cavities in a box body (1) through the oil seal seat (4); the two double-lip seals (5) are symmetrically and coaxially arranged on the piston rod (2), the inner rings of the double-lip seals (5) are provided with two symmetrical sealing lips (51), the inner ring of the oil seal seat (4) is provided with a mounting groove (41), so that the double-lip seals (5) can be assembled in the mounting groove (41), and the sealing lips (51) can be tightly pressed on the surface of the piston rod (2).
2. The sealing device for the piston rod of the homogenizer according to claim 1, wherein: the inner ring section of the double-lip seal (5) is of a cambered surface structure, so that a sealing cavity is formed between two sealing lips (51) of the double-lip seal (5) and the surface of the piston rod (2).
3. The sealing device for the piston rod of the homogenizer according to claim 1, wherein: the section of the mounting groove (41) of the oil seal seat (4) is of a concave structure, so that the double-lip seal (5) can be assembled in the mounting groove (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122876940.5U CN216843100U (en) | 2021-11-19 | 2021-11-19 | Piston rod sealing device of homogenizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122876940.5U CN216843100U (en) | 2021-11-19 | 2021-11-19 | Piston rod sealing device of homogenizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216843100U true CN216843100U (en) | 2022-06-28 |
Family
ID=82101992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122876940.5U Active CN216843100U (en) | 2021-11-19 | 2021-11-19 | Piston rod sealing device of homogenizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216843100U (en) |
-
2021
- 2021-11-19 CN CN202122876940.5U patent/CN216843100U/en active Active
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| GR01 | Patent grant |