CN212004290U - Precision bypass valve rod - Google Patents
Precision bypass valve rod Download PDFInfo
- Publication number
- CN212004290U CN212004290U CN202020669650.6U CN202020669650U CN212004290U CN 212004290 U CN212004290 U CN 212004290U CN 202020669650 U CN202020669650 U CN 202020669650U CN 212004290 U CN212004290 U CN 212004290U
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- valve rod
- rod body
- exhaust control
- control lever
- exhaust
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Abstract
The utility model discloses an accurate bypass valve rod, including the valve rod body, parallel arrangement twice case constant head tank on the valve rod body, this internal cavity structure that is of valve rod runs through the cavity of valve rod body, is equipped with an exhaust control lever, the exhaust control lever can follow the inside reciprocating of valve rod body, the lower extreme of exhaust control lever is equipped with one and valve rod body bottom air inlet matched with end cap, and when the exhaust control lever down moved, the end cap was opened valve rod body bottom air inlet and is exhausted, when the exhaust control lever up moved, the end cap was plugged up valve rod body bottom air inlet and is realized sealing, and the top of valve rod body still is equipped with a gas collection device for collect the combustion gas. The utility model discloses a knot is ingenious enough, just can have exhaust function through the improvement of making the setting exhaust control lever on the bypass valve rod, does not need extra exhaust apparatus, and the practicality is strong, is particularly useful for the bypass pipeline of volatile liquid transmission, is worth promoting.
Description
Technical Field
The utility model belongs to the technical field of relate to the valve, especially, relate to an accurate bypass valve rod.
Background
The valve rod is an important part of the valve and is used for transmission, an actuating mechanism or a handle is connected to the valve rod, and the valve rod directly drives the valve core to move or rotate below the actuating mechanism or the handle so as to realize the opening and closing or adjusting function of the valve. In the prior art, for volatile liquid, in a bypass pipeline, the problem of pressure rise in the bypass pipeline caused by volatilization of residual liquid easily occurs, which not only may cause unsmooth liquid circulation when a bypass valve is opened again, but also may cause the problem of gas quantity increase in the pipeline, and for the situation, people need to find a better solution.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a precision bypass valve rod is provided, the bypass pipeline who is particularly useful for the transmission of volatile liquid.
The utility model discloses a realize through following technical scheme:
precision bypass valve rod, including the valve rod body, parallel arrangement twice case constant head tank on the valve rod body, this internal cavity structure that is of valve rod runs through the cavity of valve rod body, is equipped with an exhaust control pole, the exhaust control pole can follow the inside reciprocating of valve rod body, the lower extreme of exhaust control pole is equipped with one and valve rod body bottom air inlet matched with end cap, and when exhaust control pole down moved, the end cap was opened valve rod body bottom air inlet and is exhausted, when exhaust control pole up moved, the end cap was plugged up valve rod body bottom air inlet and is realized sealing, and the top of valve rod body still is equipped with a gas collection device for collect the combustion gas.
Preferably, the exhaust control rod is at least provided with a threaded section at the upper part, and the exhaust control rod is internally provided with an internal thread matched with the threaded section so as to move up and down along the inside of the valve rod body, the internal thread is further provided with a plurality of vent grooves, and gas can be upwards discharged from a cavity of the valve rod body along the vent grooves and enters the gas collecting device. When exhaust is needed, the exhaust control rod moves downwards through thread fit, the plug protrudes out of the air inlet at the bottom of the valve rod body, the cavity is communicated with the bypass pipeline, gas in the bypass pipeline is exhausted upwards through the cavity of the valve rod body, and the gas enters the gas collecting device. When the exhaust is completed, the exhaust control rod moves upwards through the thread fit, so that the plug blocks the air inlet at the bottom of the valve rod body, the cavity is disconnected with the bypass pipeline, and the pipeline is sealed.
Preferably, a return spring is sleeved on the valve rod body between the upper part of the exhaust control rod and the upper part of the valve rod body, the top end of the exhaust control rod is further connected with an operation pressing rod, and a fulcrum of the operation pressing rod is arranged on a fixed plane. When the operation pressure rod is pulled upwards, the return spring is compressed, the exhaust control rod is pressed downwards, the plug protrudes out of the air inlet at the bottom of the valve rod body, the cavity is communicated with the bypass pipeline, gas is exhausted upwards through the cavity of the valve rod body, and the gas enters the gas collecting device; when the exhaust is finished, the operation pressing rod is loosened, the exhaust control rod moves upwards under the action of the resilience force of the return spring, and the plug is driven to upwards block the air inlet at the bottom of the valve rod body again, so that the valve rod body is restored to the closed state. The far end is provided with the operation pressure lever, so that the personnel safety can be better ensured.
Preferably, the upper end of the exhaust control rod is provided with a limiting block with the area larger than the section of the cavity of the valve rod body.
The utility model has the advantages that:
the utility model discloses a knot is ingenious enough, just can have exhaust function through the improvement of making the setting exhaust control lever on the bypass valve rod, does not need extra exhaust apparatus, and the practicality is strong, is particularly useful for the bypass pipeline of volatile liquid transmission, is worth promoting.
Drawings
For ease of illustration, the invention is described in detail by the following specific examples and figures.
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;
fig. 2 is a perspective view and a sectional view of a valve stem body in embodiment 1;
fig. 3 is a schematic structural diagram of embodiment 2 of the present invention.
Detailed Description
Example 1
As shown in fig. 1-2, the precision bypass valve rod comprises a valve rod body 1, wherein two valve element positioning grooves 2 are arranged in parallel on the valve rod body 1, a valve block is connected on each valve element positioning groove 2, a cavity structure is arranged in the valve rod body 1 and penetrates through a cavity of the valve rod body 1, an exhaust control rod 3 is arranged, the exhaust control rod 3 can move up and down along the inside of the valve rod body, a plug 4 matched with an air inlet at the bottom of the valve rod body 1 is arranged at the lower end of the exhaust control rod 3, when the exhaust control rod 3 moves down, the air inlet at the bottom of the valve rod body 1 is opened by the plug 4 to exhaust air, when the exhaust control rod 3 moves up, the air inlet at the bottom of the valve rod body 1 is plugged by the plug 4 to realize sealing, and a gas collecting device 5 is.
The exhaust control rod 3 is at least provided with a thread section on the upper part, and the thread section is matched with the thread section, the valve rod body is internally provided with an internal thread 6 so as to realize that the exhaust control rod 3 can move up and down along the inside of the valve rod body 1, the internal thread 6 is also provided with a plurality of vent grooves 7, and gas can be upwards discharged from the cavity of the valve rod body 1 along the vent grooves 7 and enters the gas collecting device 5.
When needing to exhaust, let exhaust control lever 3 down remove through screw-thread fit, make end cap 4 salient in the bottom air inlet of valve rod body 1, let cavity and bypass line intercommunication, the gas in the bypass line up exhausts through valve rod body cavity, and gas admission gas collection device 5.
When the exhaust is completed, the exhaust control rod 3 is enabled to move upwards through threaded fit, the bottom air inlet of the valve rod body 1 is plugged by the plug 4, the cavity is disconnected with the bypass pipeline, and the pipeline is sealed.
And the upper end of the exhaust control rod is provided with a limiting block with the area larger than the section of the cavity of the valve rod body.
Example 2
As shown in fig. 3, accurate bypass valve rod, including valve rod body 1, parallel arrangement twice case constant head tank 2 on the valve rod body 1, the valve block is connected on the case constant head tank 2, is the cavity structure in the valve rod body 1, runs through the cavity of valve rod body 1, is equipped with an exhaust control lever 3, exhaust control lever 3 can follow the inside reciprocating of valve rod body, exhaust control lever 3's lower extreme is equipped with one and valve rod body 1 bottom air inlet matched with end cap 4, and when exhaust control lever 3 down moved, end cap 4 opened the air inlet of valve rod body 1 bottom and exhausts, when exhaust control lever 3 up moved, end cap 4 plugged up the air inlet of valve rod body 1 bottom and realized sealing, and valve rod body 1's top still is equipped with a gas collection device 5 for collect the combustion gas.
Between the upper portion of exhaust control lever 3 and the upper portion of valve rod body 1, the cover is equipped with a return spring 8 on the valve rod body 1, exhaust control lever 3 top still is connected with an operation depression bar 9, the fulcrum 10 of operation depression bar 9 sets up on a fixed plane. When the operation pressure rod 9 is pulled upwards, the return spring 8 is compressed, the exhaust control rod 3 is pressed downwards, the plug 4 protrudes out of the air inlet at the bottom of the valve rod body 1, the cavity is communicated with the bypass pipeline, gas is exhausted upwards through the cavity of the valve rod body 1, and the gas enters the gas collecting device 5; when the exhaust is finished, the operation pressing rod 9 is loosened, the exhaust control rod 3 moves upwards under the action of the resilience force of the return spring 8, and the plug 4 is driven to upwards block the air inlet at the bottom of the valve rod body 1 again, so that the valve rod body is restored to the closed state. The far end is provided with the operation pressure lever, so that the personnel safety can be better ensured.
And the upper end of the exhaust control rod 3 is provided with a limiting block with the area larger than the section of the cavity of the valve rod body 1.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the creative work should be covered within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.
Claims (4)
1. The precise bypass valve rod is characterized by comprising a valve rod body, wherein two valve core positioning grooves are arranged in the valve rod body in parallel, a cavity structure is arranged in the valve rod body, a cavity penetrating through the valve rod body is provided with an exhaust control rod, the exhaust control rod can move up and down along the inside of the valve rod body, the lower end of the exhaust control rod is provided with a plug matched with an air inlet at the bottom of the valve rod body, and a gas collecting device is further arranged above the valve rod body and used for collecting exhaust gas.
2. The precision bypass valve rod according to claim 1, wherein the exhaust control rod is provided with a threaded section at least at an upper portion, and the valve rod body is provided with an internal thread at least in cooperation with the threaded section, so that the exhaust control rod can move up and down along the inside of the valve rod body, and the internal thread is further provided with a plurality of vent grooves along which gas can be discharged out of the cavity of the valve rod body upwards and enter the gas collecting device.
3. The precision bypass valve rod according to claim 1, wherein a return spring is sleeved on the valve rod body between the upper part of the exhaust control rod and the upper part of the valve rod body, the top end of the exhaust control rod is further connected with an operation pressing rod, and the fulcrum of the operation pressing rod is arranged on a fixed plane.
4. The precision bypass valve rod according to claim 1, wherein the upper end of the exhaust control rod is provided with a limiting block with an area larger than the cross section of the cavity of the valve rod body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020669650.6U CN212004290U (en) | 2020-04-28 | 2020-04-28 | Precision bypass valve rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020669650.6U CN212004290U (en) | 2020-04-28 | 2020-04-28 | Precision bypass valve rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212004290U true CN212004290U (en) | 2020-11-24 |
Family
ID=73406234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020669650.6U Active CN212004290U (en) | 2020-04-28 | 2020-04-28 | Precision bypass valve rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212004290U (en) |
-
2020
- 2020-04-28 CN CN202020669650.6U patent/CN212004290U/en active Active
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