CN219954230U - Manual stop valve with pre-opening valve clack - Google Patents
Manual stop valve with pre-opening valve clack Download PDFInfo
- Publication number
- CN219954230U CN219954230U CN202223491490.9U CN202223491490U CN219954230U CN 219954230 U CN219954230 U CN 219954230U CN 202223491490 U CN202223491490 U CN 202223491490U CN 219954230 U CN219954230 U CN 219954230U
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- Prior art keywords
- valve
- opening
- clack
- valve clack
- sealing surface
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- 238000007789 sealing Methods 0.000 claims abstract description 16
- 239000000945 filler Substances 0.000 abstract description 2
- 230000005484 gravity Effects 0.000 abstract description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- Safety Valves (AREA)
Abstract
The utility model discloses a manual stop valve with a pre-opening valve clack, which comprises a valve body, a valve rod, a large valve clack and a pre-opening valve clack, wherein the pre-opening valve clack is arranged in the large valve clack and fixedly connected with the valve rod, the valve rod is in threaded connection with the large valve clack through a locking nut, a pressure relief hole is formed in the locking nut, a main sealing surface in contact with the valve body is arranged outside the large valve clack, and an auxiliary sealing surface in contact with the pre-opening valve is arranged inside the large valve clack. When the valve needs to be opened, the pre-opening valve clack acts firstly, and because the sectional area of the pre-opening valve clack is smaller than that of the large valve clack, the opening force is greatly reduced, and when the pre-opening valve clack leaves the auxiliary sealing surface, no pressure difference exists at two sides of the large valve clack, and the whole valve is opened only by overcoming the gravity of the large valve clack and the friction force of the filler. The utility model greatly reduces the force required by opening the high-inlet low-outlet stop valve under the high-pressure working condition, and is convenient for workers to quickly open and close the manual valve on site.
Description
Technical Field
The utility model relates to the technical field of stop valves, in particular to a manual stop valve with a pre-opening valve clack.
Background
In the pipeline with higher pressure difference, the installation direction of the stop valve is generally high, low and high, if the stop valve is required to be opened and closed manually, the opening force at the moment can be larger, and the on-site operation of staff is inconvenient.
Disclosure of Invention
In view of the above, the present utility model provides a manual shut-off valve with a pre-opening flap.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a take manual stop valve of pre-opening valve clack, includes valve body, valve rod, big valve clack, still includes the valve clack of pre-opening, in the big valve clack was located to the valve clack of pre-opening, with valve rod fixed connection, the valve rod passes through lock nut and big valve clack threaded connection, is equipped with the pressure release hole on the lock nut, big valve clack outside is equipped with the main sealing face with the valve body contact, inside be equipped with the vice sealing face of pre-opening valve contact.
Preferably, the pre-opening valve flap and the valve rod are of an integrated structure.
As the preferable of the scheme, the valve body is provided with the inflow channel and the outflow channel, the valve body is internally provided with the valve cavity, the inflow channel and the outflow channel are both communicated with the valve cavity, the large valve clack is arranged in the valve cavity, and the inflow channel and the outflow channel can be communicated or separated through opening or closing of the large valve clack.
Due to the structure, the utility model has the beneficial effects that:
the manual valve is arranged in the valve opening device, so that the opening force required by opening the valve is greatly reduced, and a worker can conveniently and quickly open and close the manual valve on site.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are required to be used in the description of the embodiments will be briefly described below.
FIG. 1 is a schematic diagram of the structure of the present utility model;
fig. 2 is an assembly view of the present utility model.
Detailed Description
The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.
As shown in fig. 1 and 2, this embodiment provides a manual stop valve with a pre-opening valve clack, which comprises a valve body 1, a valve rod 2, a large valve clack 3 and a pre-opening valve clack 4, wherein the pre-opening valve clack 4 is arranged in the large valve clack 3 and fixedly connected with the valve rod 2, the valve rod 2 is in threaded connection with the large valve clack 3 through a lock nut 5, a pressure relief hole is formed in the lock nut 5, a main sealing surface 31 in contact with the valve body 1 is arranged outside the large valve clack 3, and a secondary sealing surface 32 in contact with the pre-opening valve is arranged inside the large valve clack 3.
In this embodiment, the pre-opening valve 4 and the valve rod 2 are integrally formed.
In this embodiment, the valve body 1 is provided with an inflow channel and an outflow channel, the valve body 1 is provided with a valve cavity, the inflow channel and the outflow channel are both communicated with the valve cavity, the large valve clack 3 is arranged in the valve cavity, and the inflow channel and the outflow channel can be communicated or blocked through opening or closing of the large valve clack 3.
The working principle of the structure is as follows:
in the manual stop valve with the pre-opening valve clack, an auxiliary sealing surface 32 is also arranged in the large valve clack 3 with a main sealing function, the valve rod 2 and the pre-opening valve clack 4 are integrated, and when the valve is closed, the sealing surface of the pre-opening valve clack 4 is sealed with the auxiliary sealing surface 32 in the large valve clack 3 in a line manner; the large valve clack 3 is in linear seal with the main sealing surface 31 of the valve body 1, and the sealing effect is good. When the valve needs to be opened, the pre-opening valve clack 4 acts firstly, and because the sectional area of the pre-opening valve clack 4 is smaller than that of the large valve clack 3, the opening force is greatly reduced, and when the pre-opening valve clack 4 leaves the auxiliary sealing surface 32, no pressure difference (pressure relief hole) exists on two sides of the large valve clack 3, and the whole valve is opened only by overcoming the gravity of the large valve clack 3 and the friction force of the filler. The novel structure greatly overcomes the magnitude of the force required by opening the stop valve with high inlet and low outlet under the high-pressure working condition.
The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (3)
1. The utility model provides a take manual stop valve of pre-opening valve clack, includes valve body, valve rod, big valve clack, its characterized in that: the valve rod is fixedly connected with the valve rod, the valve rod is in threaded connection with the large valve clack through a lock nut, a pressure relief hole is formed in the lock nut, a main sealing surface in contact with the valve body is arranged outside the large valve clack, and an auxiliary sealing surface in contact with the pre-opening valve is arranged inside the large valve clack.
2. The manual shut-off valve with pre-opening flap of claim 1, wherein: the pre-opening valve flap and the valve rod are of an integrated structure.
3. The manual shut-off valve with pre-opening flap of claim 1, wherein: the valve body is provided with an inflow channel and an outflow channel, the valve body is internally provided with a valve cavity, the inflow channel and the outflow channel are both communicated with the valve cavity, the large valve clack is arranged in the valve cavity, and the inflow channel and the outflow channel can be communicated or separated through opening or closing the large valve clack 。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223491490.9U CN219954230U (en) | 2022-12-27 | 2022-12-27 | Manual stop valve with pre-opening valve clack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223491490.9U CN219954230U (en) | 2022-12-27 | 2022-12-27 | Manual stop valve with pre-opening valve clack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219954230U true CN219954230U (en) | 2023-11-03 |
Family
ID=88545375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223491490.9U Active CN219954230U (en) | 2022-12-27 | 2022-12-27 | Manual stop valve with pre-opening valve clack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219954230U (en) |
-
2022
- 2022-12-27 CN CN202223491490.9U patent/CN219954230U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |