CN112303262A - Novel sealing form of gate valve - Google Patents
Novel sealing form of gate valve Download PDFInfo
- Publication number
- CN112303262A CN112303262A CN202011237393.XA CN202011237393A CN112303262A CN 112303262 A CN112303262 A CN 112303262A CN 202011237393 A CN202011237393 A CN 202011237393A CN 112303262 A CN112303262 A CN 112303262A
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- CN
- China
- Prior art keywords
- sealing
- gate valve
- valve
- sealing body
- inflation
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/0227—Packings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
Abstract
The invention discloses a novel sealing form of a gate valve, which comprises a sealing groove formed by inwards sinking a valve frame part of the gate valve and a sealing body arranged in the sealing groove, wherein the sealing body is connected with inflation equipment through an inflation pipe and an inflation nozzle, so that when the gate valve is opened, the sealing body is in a non-inflation state; when the gate valve is closed, the inflation equipment pressurizes the sealing body to expand the sealing body and fill the gap between the valve frame and the valve plate, so that complete sealing is realized. The problem of damage to a sealing surface in the opening and closing processes of the gate valve is solved, and therefore the gate valve is guaranteed to keep zero leakage rate for a long time.
Description
Technical Field
The invention relates to a novel sealing form of a gate valve.
Background
At present, a gate valve is commonly adopted for a channel valve. The gate valve is divided into two parts, namely a valve frame and a valve plate, wherein the valve plate moves upwards when the valve is opened, and the valve plate moves downwards when the valve is closed. The main sealing forms of the gate valve are two. One is a hard seal: the sealing surface is made of copper or alloy; the other is soft sealing: and sealing by using a rubber ring. In the practical use of the gate valve, the gate valve is difficult to ensure zero leakage for a long time.
However, the following problems exist:
1. by adopting a hard sealing mode, sealing surfaces rub with each other for a long time in the opening and closing processes of the gate valve, and the sealing surfaces are abraded to cause water leakage of the gate valve;
2. the rubber ring sealing mode is adopted, the sealing ring is partially or completely exposed, and the valve plate is easy to damage the rubber ring in the opening and closing processes of the valve plate, so that the gate valve leaks water;
3. the gate valve with damaged sealing surface has large leakage environmental protection pressure, large sealing replacement difficulty and high cost.
Therefore, it is urgently needed to provide a novel sealing form of the gate valve to solve the technical problem.
Disclosure of Invention
The invention aims to provide a novel sealing form of a gate valve, which solves the problem of damage to a sealing surface in the opening and closing processes of the gate valve, thereby ensuring that the gate valve keeps zero leakage rate for a long time.
In order to achieve the purpose, the invention provides a novel sealing form of a gate valve, which comprises a sealing groove formed by inwards recessing a valve frame part of the gate valve and a sealing body arranged in the sealing groove, wherein the sealing body is connected with inflation equipment through an inflation tube and an inflation nozzle, so that when the gate valve is opened, the sealing body is in a non-inflation state; when the gate valve is closed, the inflation equipment pressurizes the sealing body to expand the sealing body and fill the gap between the valve frame and the valve plate, so that complete sealing is realized.
Preferably, the height of the sealing body in the non-pressurized state is less than the depth of the sealing groove.
Preferably, the sealing body is detachably inserted into the sealing groove.
Preferably, the sealing body is a hollow elastomer and is inflatable.
Preferably, the inflation device is an air pump.
Preferably, the sealing body is connected with the water pump through a water filling pipe and a water valve.
According to the technical scheme, the novel sealing mode for realizing sealing through contraction and expansion of the sealing body is designed. The sealing body is a hollow elastic body and can be pressurized. In the non-pressurized state, the seal body is in a contracted state, and in the pressurized state, the seal body is expanded. The sealing groove is arranged at the sealing surface of the valve frame for preventing the displacement of the sealing body, and the sealing body is embedded into the sealing groove. In the opening and closing process of the gate valve, the valve plate does not contact with the sealing surface when moving, so that the sealing body is not damaged. When the valve plate is closed in place, the sealing body is inflated to fill the gap between the valve frame and the valve plate, so that the valve plate and the valve frame are completely sealed.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of the connection of the sealing body to the inflation nozzle of the present invention;
FIG. 2 is a schematic view showing the state of the seal body when the gate valve is opened according to the present invention;
FIG. 3 is a schematic view of the state of the seal body when the gate valve is closed in the present invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
In the present invention, unless otherwise specified, the directional words "inside, outside" and the like included in a term merely represent the orientation of the term in a conventional use state or a colloquial meaning understood by those skilled in the art, and should not be construed as limiting the term.
Referring to fig. 1, the present invention provides a novel sealing form of a gate valve, which includes a sealing groove formed by inward recessing of a valve frame portion of the gate valve and a sealing body disposed in the sealing groove, and the sealing body is connected to an inflation device through an inflation tube and an inflation nozzle, so that when the gate valve is opened, the sealing body is in a non-inflation state (as shown in fig. 2); when the gate valve is closed, the inflation equipment pressurizes the sealing body to expand the sealing body and fill the gap between the valve frame and the valve plate, so that complete sealing is realized (as shown in fig. 3).
In this embodiment, in order to ensure that the valve plate does not contact with the sealing surface when moving in the opening and closing processes of the gate valve, so as to ensure that the sealing body is not damaged and prolong the service life of the sealing body, the sealing body is preferably in a non-charging state and has a height smaller than the depth of the sealing groove.
In the use, in order to facilitate the change sealing body, guarantee best sealed effect, preferably the sealing body detachably inlays in the seal groove.
In addition, in order to facilitate the production and processing of the sealing body and the material taking, the sealing body is a hollow elastic body and can be pressurized.
When the gate valve uses, in order to guarantee clean and tidy orderly of operational environment, prevent the discarded object pollution that production and processing produced, preferred inflation equipment is the air pump.
In another embodiment, the sealing body is connected to the water pump via a water filling pipe and a water valve.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (6)
1. A novel sealing form of a gate valve is characterized by comprising a sealing groove formed by inwards sinking a valve frame part of the gate valve and a sealing body arranged in the sealing groove, wherein the sealing body is connected with inflation equipment through an inflation tube and an inflation nozzle, so that when the gate valve is opened, the sealing body is in a non-inflation state; when the gate valve is closed, the inflation equipment pressurizes the sealing body to expand the sealing body and fill the gap between the valve frame and the valve plate, so that complete sealing is realized.
2. The novel form of sealing of a gate valve as claimed in claim 1 wherein the seal body is at a non-pressurized height less than the depth of the seal groove.
3. The novel seal form of a gate valve as claimed in claim 1, wherein the seal body is removably inserted into the seal groove.
4. The novel form of sealing of a gate valve as claimed in claim 1 wherein the seal is a hollow elastomer and is inflatable.
5. The novel seal form of a gate valve according to claim 1, characterized in that the inflation device is an air pump.
6. The novel sealing form of the gate valve according to claim 1, characterized in that the sealing body is connected with the water pump through a water filling pipe and a water valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011237393.XA CN112303262A (en) | 2020-11-09 | 2020-11-09 | Novel sealing form of gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011237393.XA CN112303262A (en) | 2020-11-09 | 2020-11-09 | Novel sealing form of gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112303262A true CN112303262A (en) | 2021-02-02 |
Family
ID=74326566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011237393.XA Pending CN112303262A (en) | 2020-11-09 | 2020-11-09 | Novel sealing form of gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112303262A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1263391A (en) * | 1969-01-07 | 1972-02-09 | Coplastix Ltd | Improvements in or relating to fluid-flow control valves |
| US6260490B1 (en) * | 2000-02-16 | 2001-07-17 | Sure Alloy Steel Corporation | Burner isolation valve for pulverized fuel systems |
| CN201795068U (en) * | 2010-03-11 | 2011-04-13 | 浙江固特气动机械有限公司 | Flexibly sealed gate valve |
| CN204922057U (en) * | 2015-08-26 | 2015-12-30 | 上海妙佳流体控制技术有限公司 | Pneumatic knife gate of gas sealed |
| CN105221772A (en) * | 2014-07-03 | 2016-01-06 | 金流阀门（上海）有限公司 | A kind of pneumatic expansion sealed type knife gate valve |
| CN106949253A (en) * | 2017-04-27 | 2017-07-14 | 沈阳真空技术研究所 | Inflate piston seal vacuum gate valve |
-
2020
- 2020-11-09 CN CN202011237393.XA patent/CN112303262A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1263391A (en) * | 1969-01-07 | 1972-02-09 | Coplastix Ltd | Improvements in or relating to fluid-flow control valves |
| US6260490B1 (en) * | 2000-02-16 | 2001-07-17 | Sure Alloy Steel Corporation | Burner isolation valve for pulverized fuel systems |
| CN201795068U (en) * | 2010-03-11 | 2011-04-13 | 浙江固特气动机械有限公司 | Flexibly sealed gate valve |
| CN105221772A (en) * | 2014-07-03 | 2016-01-06 | 金流阀门（上海）有限公司 | A kind of pneumatic expansion sealed type knife gate valve |
| CN204922057U (en) * | 2015-08-26 | 2015-12-30 | 上海妙佳流体控制技术有限公司 | Pneumatic knife gate of gas sealed |
| CN106949253A (en) * | 2017-04-27 | 2017-07-14 | 沈阳真空技术研究所 | Inflate piston seal vacuum gate valve |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210202 |
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| RJ01 | Rejection of invention patent application after publication |