CN216242389U - Push rod needle integral type mechanism - Google Patents
Push rod needle integral type mechanism Download PDFInfo
- Publication number
- CN216242389U CN216242389U CN202122790130.8U CN202122790130U CN216242389U CN 216242389 U CN216242389 U CN 216242389U CN 202122790130 U CN202122790130 U CN 202122790130U CN 216242389 U CN216242389 U CN 216242389U
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- Prior art keywords
- push rod
- valve needle
- section
- valve
- upper section
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- 230000007246 mechanism Effects 0.000 title claims abstract description 23
- 238000007789 sealing Methods 0.000 claims abstract description 38
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 238000003466 welding Methods 0.000 claims description 4
- 239000004677 Nylon Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 230000008093 supporting effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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Abstract
The utility model discloses a push rod and valve needle integrated mechanism, which comprises: push rod needle, fixed block, seal gasket and gasket support piece. The push rod valve needle is integrally formed. The push rod valve needle is provided with a valve needle upper section, a valve needle lower section and a valve needle connecting section. The upper valve needle section is located inside the push rod channel and provided with an upper section upper portion and an upper section lower portion, the valve needle connecting section penetrates through the valve body valve port, and the lower valve needle section is located below the valve body valve port. The fixed block surrounds between the upper part of the upper section and the push rod channel. And a vertical gap is reserved between the bottom surface of the fixed block and the top surface of the lower part of the upper section. The vertical gap is internally provided with the sealing gasket and the gasket support sheet. The utility model has the beneficial effects that: the sealing device has the advantages of simple structure, good sealing performance, easy processing, wide practicability and low production and manufacturing cost.
Description
Technical Field
The utility model relates to a push rod and a valve needle in a flow regulating valve, in particular to a push rod and valve needle integrated mechanism.
Background
In a refrigeration system, a flow regulating valve is an important refrigeration control regulating element. In the prior art, a sealing mechanism of the push rod and the valve body generally ensures a gap between the push rod and a push rod channel through machining, or a rubber ring is additionally arranged on the push rod and the push rod channel and is sealed after the rubber ring is compressed through a pressing block. The two forms have the drawback that the gap requirement of machining is extremely high, the gap is easy to cause leakage, the rubber ring is easy to damage in installation, and the rubber ring is deformed due to high temperature during installation and welding, so that leakage is caused, and the use of the valve is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that leakage is easy to occur between a push rod and a push rod channel in the existing flow regulating valve, and provides a novel push rod and valve needle integrated mechanism.
In order to achieve the purpose, the technical scheme of the utility model is as follows: a push rod and valve needle integrated mechanism is suitable for a flow regulating valve. The flow regulating valve includes: the valve comprises a medium inlet, an upper chamber communicated with the medium inlet, a medium outlet, a lower chamber communicated with the medium outlet, a valve body valve port between the upper chamber and the lower chamber, and a push rod channel positioned above the valve body valve port. The push rod and valve needle integrated mechanism comprises: the push rod valve needle is integrally formed and is provided with an upper valve needle section, a lower valve needle section and a valve needle connecting section between the upper valve needle section and the lower valve needle section, the upper valve needle section is positioned in the push rod channel and is provided with an upper section upper part and an upper section lower part, the outer diameter of the upper section upper part is smaller than the outer diameter of the upper section lower part, the upper section lower part is matched with the push rod channel through a shaft hole, the valve needle connecting section penetrates through the valve body valve port, the lower valve needle section is positioned below the valve body valve port and is used for sealing the valve body valve port, the fixing block is encircled between the upper section upper part and the push rod channel and is matched with the shaft hole of the push rod channel, the fixing block is fixedly connected with the upper section upper part, and a vertical gap is reserved between the bottom surface of the fixing block and the top surface of the upper section lower part, the sealing gasket and the gasket support sheet are arranged in the vertical gap, the bottom surface of the gasket support sheet is in surface contact with the top surface of the lower part of the upper section and the chamfer angle surface respectively, the top surface of the gasket support sheet is in surface contact with the bottom surface of the sealing gasket, the top surface of the sealing gasket is in surface contact with the bottom surface of the fixed block, and the sealing gasket is in interference fit with the axial hole of the push rod channel.
As a preferable scheme of the push rod and valve needle integrated mechanism, the lower section of the valve needle is in a conical structure.
As a preferable scheme of the push rod and valve needle integrated mechanism, the sealing gasket is made of: nylon.
As a preferable scheme of the push rod and valve needle integrated mechanism, the sealing gasket is made of: polytetrafluoroethylene.
As a preferable scheme of the push rod and valve needle integrated mechanism, the fixing block fixedly connected with the upper part of the upper section comprises: and providing a fixing buckle, wherein the fixing buckle is positioned above the fixing block, the fixing buckle is wound on the periphery of the upper part of the upper section, the bottom surface of the fixing buckle is in surface contact with the top surface of the fixing block, and the fixing buckle positions the fixing block.
As a preferable scheme of the push rod and valve needle integrated mechanism, the fixing block fixedly connected with the upper part of the upper section comprises: the fixed block with the needle upper segment is through welding mode looks fixed connection.
Compared with the prior art, the utility model has the beneficial effects that: when the high-pressure medium acts on the sealing gasket, the high-pressure medium cannot pass through the sealing gasket to realize sealing under the supporting action of the fixing block. Meanwhile, in the process of up-and-down reciprocating motion of the push rod valve needle, the sealing gasket cannot excessively deform under the supporting action of the gasket support sheet, and the sealing effect is ensured. The sealing device has the advantages of simple structure, good sealing performance, easy processing, wide practicability and low production and manufacturing cost.
In addition to the technical problems solved by the present invention, the technical features constituting the technical solutions, and the advantageous effects brought by the technical features of the technical solutions described above, other technical problems solved by the present invention, other technical features included in the technical solutions, and advantageous effects brought by the technical features will be described in further detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of an upper section of the valve needle in the present invention.
Fig. 3 is a schematic diagram of the application of the present invention.
Detailed Description
The present invention will be described in further detail below with reference to specific embodiments and drawings. Here, the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Referring to fig. 1 to 3, a push rod and valve needle integrated mechanism is shown, which can be applied to various flow regulating valves.
The flow regulating valve includes: a medium inlet 51, an upper chamber 52 communicated with the medium inlet 51, a medium outlet 53, a lower chamber 54 communicated with the medium outlet 53, a valve body valve port 55 between the upper chamber 52 and the lower chamber 54, and a push rod channel 56 positioned above the valve body valve port 55. The valve body port 55 communicates the upper chamber 52 with the lower chamber 54.
The push rod and valve needle integrated mechanism comprises: push rod needle 1, fixed block 2, seal gasket 3 and gasket support piece 4.
The push rod valve needle 1 is integrally formed. The push rod needle 1 has a needle upper section 11, a needle lower section 12, and a needle connecting section 13 between the needle upper section 11 and the needle lower section 12.
The needle upper section 11 is located inside the push rod channel 56. The needle upper section 11 has an upper section upper portion 111 and an upper section lower portion 112. The upper section upper portion 111 has an outer diameter smaller than the upper section lower portion 112. The upper section lower part 112 is axially hole-fitted with the push rod channel 56, so that the push rod needle 1 can be displaced up and down along the push rod channel 56.
The needle attachment section 13 extends through the valve body port 55. The needle upper section 11 and the needle connecting section 13 correspond to a push rod of a conventional valve.
The valve needle lower section 12 is located below the valve body port 55. The needle lower section 12 corresponds to the needle of a conventional valve. The valve needle lower section 12 is used for sealing the valve body valve port 55. The lower needle section 12 may be of a conical configuration.
The fixing block 2 surrounds the upper portion 111 of the upper section and the push rod channel 56. The fixing block 2 is axially and hole-fitted with the push rod channel 56, so that the fixing block 2 can be displaced up and down along the push rod channel 56. The fixed block 2 is fixedly connected with the upper part 111 of the upper section. A vertical gap is formed between the bottom surface of the fixed block 2 and the top surface of the upper section lower part 112. The sealing gasket 3 is arranged in the vertical gap.
In order to prevent the sealing gasket 3 from being excessively deformed to block the push rod channel 56, the gasket support piece 4 is added and a chamfer surface is formed between the top surface of the upper section lower part 112 and the outer peripheral surface of the upper section lower part 112. The bottom surface of the gasket support sheet 4 is in surface contact with the top surface of the upper section lower part 112 and the chamfer angle surface respectively. The top surface of the gasket support piece 4 is in surface contact with the bottom surface of the sealing gasket 3. The top surface of the sealing gasket 3 is in surface contact with the bottom surface of the fixed block 2. The outer diameter of the sealing gasket 3 is larger than the inner diameter of the push rod channel 56, namely, the sealing gasket 3 is in interference fit with the axial hole of the push rod channel 56. The sealing gasket 3 can be made of nylon or polytetrafluoroethylene.
The working principle is as follows: and a high-pressure medium is arranged below the sealing gasket 3. When the high-pressure medium acts on the sealing gasket 3, the high-pressure medium cannot be sealed through the sealing gasket 3 under the supporting action of the fixing block 2. Meanwhile, in the process of up-and-down reciprocating motion of the push rod valve needle 1, the sealing gasket 3 cannot deform excessively under the supporting action of the gasket support sheet 4, and the sealing effect is ensured.
In this embodiment, a fixing clip 6 is further included. The fixed buckle is positioned above the fixed block 2. The fixing buckle 6 surrounds the periphery of the upper section upper part 111. The bottom surface of the fixing buckle 6 is in surface contact with the top surface of the fixing block 2. The fixing buckle 6 is used for positioning the fixing block 2 to fix the fixing block 2.
In another embodiment, the fixing block 2 is fixedly connected with the upper section 11 of the valve needle by welding.
The above only represents embodiments of the present invention, which are described in more detail and in greater detail, but not to be construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (6)
1. A push rod and valve needle integrated mechanism is suitable for a flow regulating valve, and the flow regulating valve comprises: the push rod valve needle integrated mechanism is characterized by comprising a medium inlet, an upper cavity communicated with the medium inlet, a medium outlet, a lower cavity communicated with the medium outlet, a valve body valve port between the upper cavity and the lower cavity, and a push rod channel positioned above the valve body valve port, wherein the push rod valve needle integrated mechanism comprises: the push rod valve needle is integrally formed and is provided with an upper valve needle section, a lower valve needle section and a valve needle connecting section between the upper valve needle section and the lower valve needle section, the upper valve needle section is positioned in the push rod channel and is provided with an upper section upper part and an upper section lower part, the outer diameter of the upper section upper part is smaller than the outer diameter of the upper section lower part, the upper section lower part is matched with the push rod channel through a shaft hole, the valve needle connecting section penetrates through the valve body valve port, the lower valve needle section is positioned below the valve body valve port and is used for sealing the valve body valve port, the fixing block is encircled between the upper section upper part and the push rod channel and is matched with the shaft hole of the push rod channel, the fixing block is fixedly connected with the upper section upper part, and a vertical gap is reserved between the bottom surface of the fixing block and the top surface of the upper section lower part, the sealing gasket and the gasket support sheet are arranged in the vertical gap, a chamfer surface is arranged between the top surface of the lower part of the upper section and the outer peripheral surface of the lower part of the upper section, the bottom surface of the gasket support sheet is in surface contact with the top surface of the lower part of the upper section and the chamfer surface respectively, the top surface of the gasket support sheet is in surface contact with the bottom surface of the sealing gasket, the top surface of the sealing gasket is in surface contact with the bottom surface of the fixed block, and the sealing gasket is in interference fit with the axial hole of the push rod channel.
2. The push rod and valve needle integrated mechanism as claimed in claim 1, wherein the lower valve needle section is a conical structure.
3. The push rod and valve needle integrated mechanism as claimed in claim 1, wherein the material of the sealing gasket comprises: nylon.
4. The push rod and valve needle integrated mechanism as claimed in claim 1, wherein the material of the sealing gasket comprises: polytetrafluoroethylene.
5. The push rod and valve needle integrated mechanism as claimed in any one of claims 1 to 4, wherein the fixed connection of the fixed block and the upper part of the upper section comprises: and providing a fixing buckle, wherein the fixing buckle is positioned above the fixing block, the fixing buckle is wound on the periphery of the upper part of the upper section, the bottom surface of the fixing buckle is in surface contact with the top surface of the fixing block, and the fixing buckle positions the fixing block.
6. The push rod and valve needle integrated mechanism as claimed in any one of claims 1 to 4, wherein the fixed connection of the fixed block and the upper part of the upper section comprises: the fixed block with the needle upper segment is through welding mode looks fixed connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122790130.8U CN216242389U (en) | 2021-11-15 | 2021-11-15 | Push rod needle integral type mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122790130.8U CN216242389U (en) | 2021-11-15 | 2021-11-15 | Push rod needle integral type mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216242389U true CN216242389U (en) | 2022-04-08 |
Family
ID=80941444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122790130.8U Active CN216242389U (en) | 2021-11-15 | 2021-11-15 | Push rod needle integral type mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216242389U (en) |
-
2021
- 2021-11-15 CN CN202122790130.8U patent/CN216242389U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A push rod valve needle integrated mechanism Granted publication date: 20220408 Pledgee: Huangpu Sub branch of Bank of Shanghai Co.,Ltd. Pledgor: Shanghai Thermostat Factory Co.,Ltd. Registration number: Y2024310000300 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |