CN220910647U - High-sealing valve core assembly for sensor - Google Patents
High-sealing valve core assembly for sensor Download PDFInfo
- Publication number
- CN220910647U CN220910647U CN202322655683.1U CN202322655683U CN220910647U CN 220910647 U CN220910647 U CN 220910647U CN 202322655683 U CN202322655683 U CN 202322655683U CN 220910647 U CN220910647 U CN 220910647U
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- Prior art keywords
- valve core
- core column
- rubber ring
- sealing rubber
- insulating glass
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- 238000007789 sealing Methods 0.000 title claims abstract description 57
- 229920001971 elastomer Polymers 0.000 claims abstract description 56
- 239000011521 glass Substances 0.000 claims abstract description 39
- 239000002184 metal Substances 0.000 claims abstract description 25
- 238000001746 injection moulding Methods 0.000 claims description 10
- 230000008093 supporting effect Effects 0.000 claims description 9
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 229920002379 silicone rubber Polymers 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 239000008358 core component Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 238000003466 welding Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- Gasket Seals (AREA)
Abstract
The high-sealing valve core component for the sensor is provided, a valve core column is of a stepped structure, the diameter of the upper end of the valve core column is smaller than that of the lower end of the valve core column, the upper end face of a metal framework is leveled with the stepped face of the valve core column and sleeved on the large-diameter section of the valve core column, and lower insulating glass is filled between the middle part of the inner hole wall of the metal framework and the outer wall of the valve core column; an annular groove is formed in the step surface of the valve core column, upper insulating glass is filled in the annular groove, a limiting block is welded at the outer edge of the step surface of the valve core column, and an inner sealing rubber ring and an outer sealing rubber ring, the upper end surface of which is level with the step surface of the valve core column, are respectively arranged at the upper end of the lower insulating glass and the inner part of the annular groove. The utility model solves the problem of poor sealing performance of the valve core assembly caused by the rupture of the upper insulating glass and the lower insulating glass when the limiting block is welded, so that the valve core assembly achieves good sealing effect, the inner sealing rubber ring and the outer sealing rubber ring have good surface flatness, and the valve core assembly has good adhesion with a metal framework and a valve core column.
Description
Technical Field
The utility model belongs to the technical field of sensors, and particularly relates to a high-sealing type valve core assembly for a sensor.
Background
The valve core of the sensor is used for the inside of the sensor with good sealing performance, is used for sealing the gas in the sensor and preventing the gas from leaking, is mainly used in the electronic field, and has wide application prospect. The existing valve core consists of a metal shell, a valve core column and glass filled in the metal shell, a limiting block is required to be welded at the upper end of the valve core column during use, a welding position on the valve core is close to the glass, after the limiting block is welded at high temperature, the glass positioned in the middle of the valve core can generate cracks at high temperature, so that the valve core is difficult to seal, the tightness of the whole sensor is poor, the risk of leakage of gas from top to bottom exists, and therefore, the problem of poor tightness is required to be improved.
Disclosure of utility model
The utility model solves the technical problems that: the utility model provides a high sealed type case subassembly for sensor sets up through the case post that has welded the stopper and is used for being located insulating glass and the inner seal rubber ring and the outer seal rubber ring of insulating glass upper end down respectively on, has solved and has had insulating glass and lower insulating glass to break and lead to the poor problem of case subassembly leakproofness when welding the stopper for the case subassembly reaches good sealed effect, and inner seal rubber ring and outer seal rubber ring surface smoothness are good, and is good with metal skeleton and case post cohesiveness.
The utility model adopts the technical scheme that: the high-sealing type valve core assembly for the sensor comprises a valve core column and a metal framework, wherein the valve core column is of a stepped structure with the upper end diameter smaller than the lower end diameter, the upper end surface of the metal framework is leveled with the stepped surface of the valve core column and sleeved on the large-diameter section of the valve core column, and lower insulating glass is filled between the middle part of the inner hole wall of the metal framework and the outer wall of the valve core column; the valve core column is characterized in that an annular groove is formed in the stepped surface of the valve core column, upper insulating glass is filled in the annular groove, a limiting block is welded at the outer edge of the stepped surface of the valve core column, and an inner sealing rubber ring and an outer sealing rubber ring, the upper end of which is level with the stepped surface of the valve core column, are respectively arranged at the upper end of the lower insulating glass and the inner part of the annular groove.
The diameter of the inner ring of the annular groove is smaller than that of the small-diameter section of the valve core column.
Further, the cross section shape of the outer sealing rubber ring is of a T-shaped ring structure, a positioning groove communicated with the inner hole is formed in the inner edge of the upper end of the metal framework, and the upper end of the outer sealing rubber ring is positioned in the positioning groove.
Further, when the inner sealing rubber ring and the outer sealing rubber ring are molded by injection molding, a supporting rubber ring positioned between the metal framework and the valve core column is arranged at the lower end of the lower insulating glass.
Further, the supporting rubber ring is made of polytetrafluoroethylene rubber ring.
Further, the inner sealing rubber ring and the outer sealing rubber ring are formed by injection molding of silicon rubber with the hardness of 25-30 degrees.
Compared with the prior art, the utility model has the advantages that:
1. According to the technical scheme, the inner sealing rubber ring and the outer sealing rubber ring which are respectively positioned at the upper ends of the upper insulating glass and the lower insulating glass are arranged on the valve core column welded with the limiting block, so that the problem that the sealing performance of a valve core assembly is poor due to the fact that the upper insulating glass and the lower insulating glass are broken when the limiting block is welded is solved, and the valve core assembly achieves a good sealing effect;
2. The inner sealing rubber ring and the outer sealing rubber ring formed by injection molding have good surface flatness and good adhesion with the metal framework and the valve core column, thereby providing conditions for improving the sealing property;
3. According to the technical scheme, when the inner sealing rubber ring and the outer sealing rubber ring are subjected to injection molding, the lower end of the lower insulating glass is provided with the supporting rubber ring arranged between the metal framework and the valve core column, so that a good supporting effect is achieved on the lower insulating glass, and the problem that the lower insulating glass is broken due to overlarge pressure when the outer sealing rubber ring is subjected to injection molding is solved;
4. The technical scheme has the advantages of simple structure, novel design, low cost, good sealing performance, low leakage rate and higher use value.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model.
Detailed Description
The technical solution in the embodiments of the present utility model will be clearly and completely described in the following with reference to fig. 1 in the embodiments of the present utility model, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The inclusion of an element as defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
The high-sealing type valve core assembly for the sensor is shown in fig. 1, and comprises a valve core column 1 and a metal framework 2, wherein the valve core column 1 is of a stepped structure with the upper end diameter smaller than the lower end diameter, the upper end surface of the metal framework 2 is leveled with the stepped surface of the valve core column 1 and sleeved on the large-diameter section of the valve core column 1, and lower insulating glass 3 is filled between the middle part of the inner hole wall of the metal framework 2 and the outer wall of the valve core column 1; an annular groove 4 is formed in the step surface of the valve core column 1, upper insulating glass 5 is filled in the annular groove 4, a limiting block 6 is welded at the outer edge of the step surface of the valve core column 1, and an inner sealing rubber ring 7 and an outer sealing rubber ring 8 with upper end surfaces being level with the step surface of the valve core column 1 are respectively arranged at the upper end of the lower insulating glass 3 and the inside of the annular groove 4; in the structure, the inner sealing rubber ring 7 and the outer sealing rubber ring 8 which are respectively positioned at the upper ends of the upper insulating glass 5 and the lower insulating glass 3 are arranged on the valve core column 1 welded with the limiting block, so that the problem that the sealing performance of a valve core assembly is poor due to the fact that the upper insulating glass 5 and the lower insulating glass 3 are broken when the limiting block is welded is solved, and the valve core assembly achieves a good sealing effect; the injection-molded inner sealing rubber ring 7 and the outer sealing rubber ring 8 have good surface flatness and good adhesion with the metal framework 2 and the valve core column 1, thereby providing conditions for improving the sealing property;
The diameter of the inner ring of the annular groove 4 is smaller than the diameter of the small-diameter section of the valve core column 1; specifically, the cross-sectional shape of outer seal rubber ring 8 is T shape ring structure, the internal edge department of metal skeleton 2 upper end is equipped with the constant head tank 9 with hole intercommunication, and outer seal rubber ring 8 upper end is located constant head tank 9.
In order to avoid the lower insulating glass 3 from being broken due to overlarge pressure when the inner sealing rubber ring 7 and the outer sealing rubber ring 8 are injection molded, the lower end of the lower insulating glass 3 is provided with a supporting rubber ring 10 positioned between the metal framework 2 and the valve core column 1; specifically, the support rubber ring 10 is a polytetrafluoroethylene rubber ring.
Wherein, the inner sealing rubber ring 7 and the outer sealing rubber ring 8 are both formed by injection molding of silicon rubber with the hardness of 25-30 degrees.
According to the technical scheme, when the outer sealing rubber ring 8 is subjected to injection molding, the supporting rubber ring 10 arranged between the metal framework 2 and the valve core column 1 is arranged at the lower end of the lower insulating glass 3, so that a good supporting effect is achieved on the lower insulating glass 3, the problem that the lower insulating glass 3 is broken due to overlarge pressure when the outer sealing rubber ring 8 is subjected to injection molding is prevented, the structure is simple, the design is novel, the cost is low, the sealing performance is good, the leakage rate is reduced to 10 -9Pa·m3/s at present from 10 -6Pa·m3/s before, the leakage rate is low, and the use value is high.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (6)
1. High sealed type case subassembly for sensor, its characterized in that: the valve core comprises a valve core column (1) and a metal framework (2), wherein the valve core column (1) is of a stepped structure with the upper end diameter smaller than the lower end diameter, the upper end surface of the metal framework (2) is leveled with the stepped surface of the valve core column (1) and sleeved on a large-diameter section of the valve core column (1), and lower insulating glass (3) is filled between the middle part of the inner hole wall of the metal framework (2) and the outer wall of the valve core column (1); an annular groove (4) is formed in the step surface of the valve core column (1), upper insulating glass (5) is filled in the annular groove (4), a limiting block (6) is welded at the outer edge of the step surface of the valve core column (1), and an inner sealing rubber ring (7) and an outer sealing rubber ring (8) with upper end surfaces being leveled with the step surface of the valve core column (1) are respectively arranged at the upper end of the lower insulating glass (3) and the inner part of the annular groove (4).
2. The high seal cartridge assembly for a sensor of claim 1, wherein: the diameter of the inner ring of the annular groove (4) is smaller than the diameter of the small-diameter section of the valve core column (1).
3. The high seal cartridge assembly for a sensor of claim 1, wherein: the cross section shape of the outer sealing rubber ring (8) is of a T-shaped ring structure, a positioning groove (9) communicated with the inner hole is formed in the inner edge of the upper end of the metal framework (2), and the upper end of the outer sealing rubber ring (8) is located in the positioning groove (9).
4. The high-tightness valve core assembly for a sensor according to claim 1, 2 or 3, wherein: when the inner sealing rubber ring (7) and the outer sealing rubber ring (8) are molded by injection molding, the lower end of the lower insulating glass (3) is provided with a supporting rubber ring (10) positioned between the metal framework (2) and the valve core column (1).
5. The high seal cartridge assembly for a sensor of claim 4, wherein: the supporting rubber ring (10) is made of polytetrafluoroethylene rubber rings.
6. The high seal cartridge assembly for a sensor of claim 5, wherein: the inner sealing rubber ring (7) and the outer sealing rubber ring (8) are formed by injection molding of silicon rubber with the hardness of 25-30 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322655683.1U CN220910647U (en) | 2023-09-28 | 2023-09-28 | High-sealing valve core assembly for sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322655683.1U CN220910647U (en) | 2023-09-28 | 2023-09-28 | High-sealing valve core assembly for sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220910647U true CN220910647U (en) | 2024-05-07 |
Family
ID=90915986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322655683.1U Active CN220910647U (en) | 2023-09-28 | 2023-09-28 | High-sealing valve core assembly for sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220910647U (en) |
-
2023
- 2023-09-28 CN CN202322655683.1U patent/CN220910647U/en active Active
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