CN215831196U - Valve body diaphragm seal assembly - Google Patents
Valve body diaphragm seal assembly Download PDFInfo
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- CN215831196U CN215831196U CN202121532488.4U CN202121532488U CN215831196U CN 215831196 U CN215831196 U CN 215831196U CN 202121532488 U CN202121532488 U CN 202121532488U CN 215831196 U CN215831196 U CN 215831196U
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- diaphragm
- valve body
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- seal
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Abstract
The utility model provides a valve body diaphragm sealing assembly which comprises a valve body, wherein a pressing shell is fixedly arranged on the top surface of the valve body, and a double-sealing diaphragm is arranged at the joint of the pressing shell and the valve body; and a sealing boss is additionally arranged on the bottom surface of the double-sealing diaphragm. The diaphragm sealing structure can form multi-layer sealing, and after one layer of sealing fails, the other layer of sealing enters into work, so that the sealing effectiveness of the diaphragm is improved.
Description
Technical Field
The utility model relates to the technical field of double-seal diaphragm sealing, in particular to a valve body diaphragm sealing assembly.
Background
Diaphragm valve during operation, the diaphragm in the valve need frequent opening and closing, and the frequent production vibrations of diaphragm self lead to the diaphragm to become flexible easily, and then appear revealing, consequently need a valve body diaphragm seal assembly, can form the multilayer seal, after the sealed inefficacy of one deck, the sealed work that gets into in another layer improves the sealed validity of diaphragm.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a valve body diaphragm seal assembly, which can form a multi-layer seal, and after one layer of seal fails, the other layer of seal enters into operation, thereby improving the sealing effectiveness of the diaphragm.
In order to solve the technical problems, the utility model adopts the technical scheme that:
a valve body diaphragm sealing assembly comprises a valve body, wherein a pressing shell is fixedly arranged on the top surface of the valve body, and a double-sealing diaphragm is arranged at the joint of the pressing shell and the valve body;
and a sealing boss is additionally arranged on the bottom surface of the double-sealing diaphragm.
Further, the sealing boss is close to the edge position of the double-sealing diaphragm.
Furthermore, a pressing block is fixedly arranged on the top surface of the double-sealing diaphragm.
Furthermore, the inner wall of the pressing shell is provided with a pressing boss for fixing the pressing block.
Furthermore, a connecting through hole is formed in the pressing block, and a first sealing groove is formed in the side wall of the connecting through hole.
Furthermore, the side wall of the pressing block is provided with a ventilation groove, and the ventilation groove is communicated with the bottom surface of the pressing block.
Furthermore, the side wall of the pressing shell is provided with a first exhaust port, and the first exhaust port is communicated with the ventilation groove.
Further, the ventilation groove is of an annular structure.
Furthermore, a second sealing groove for isolating air is formed in the side wall of the pressing block.
Furthermore, a third sealing groove for isolating liquid is formed in the side wall of the pressing block.
The utility model has the advantages and positive effects that:
through installation double seal diaphragm in the valve body, the diaphragm tank of installation double seal diaphragm is seted up to the top surface of valve body, sealed boss has been add to the bottom surface of double seal diaphragm, sealed boss and seal groove interference fit, form groove seal, the briquetting is installed to double seal diaphragm top surface simultaneously, the briquetting compresses tightly double seal diaphragm, make the bottom surface of double seal diaphragm hug closely at the seal tank bottom surface, form plane seal, when the diaphragm uses, the preferred use of plane seal, after the plane seal became invalid, the recess seal gets into the use, improve the sealed validity of diaphragm.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:
FIG. 1 is an overall block diagram of a valve body diaphragm seal assembly of the present invention;
FIG. 2 is a cross-sectional view of a valve body diaphragm seal assembly of the present invention.
In the figure: 1. compressing the housing; 101. a first exhaust port; 102. compressing the boss; 2. a valve body; 3. a double-sealed diaphragm; 301. sealing the boss; 302. a diaphragm tank; 4. briquetting; 401. a connecting through hole; 4011. a first seal groove; 402. a second seal groove; 403. a ventilation groove; 404. a third seal groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The utility model provides a valve body diaphragm sealing assembly, as shown in figures 1-2, which comprises a valve body 2, wherein the valve body 2 is used for circulating liquid, a pressing shell 1 is fixedly arranged on the top surface of the valve body 2, an indicating rod used for displaying the deformation condition of a double-sealing diaphragm 3 is arranged in the pressing shell 1, the double-sealing diaphragm 3 is arranged at the joint of the pressing shell 1 and the valve body 2, and the double-sealing diaphragm 3 has the double-sealing effect and improves the sealing effectiveness of the diaphragm.
A diaphragm groove 302 is formed in the top surface of the valve body 2, a sealing boss 301 is additionally arranged on the bottom surface of the double-sealing diaphragm 3, and the sealing boss 301 is in interference fit with the diaphragm groove 302, so that the double-sealing diaphragm 3 and the diaphragm groove 302 form groove sealing. 3 top surfaces of double seal diaphragm pieces are installed and are used for compressing tightly briquetting 4 of double seal diaphragm pieces 3, and briquetting 4 compresses tightly double seal diaphragm pieces 3, and then makes 3 bottom surfaces of double seal diaphragm pieces hug closely with diaphragm groove 302 bottom surface and place, forms the plane seal, and double-deck sealed validity that can improve double seal diaphragm pieces 3.
The inner wall of the pressing shell 1 is provided with a pressing boss 102, the pressing shell 1 is installed on the top surface of the valve body 2, and meanwhile, the pressing block 4 is fixedly installed on the top surface of the diaphragm through the pressing boss 102, so that the pressing block 4 can be installed quickly.
Preferably, the sealing boss 301 is located at the edge of the double-sealing diaphragm 3 to ensure that the planar seal is used preferentially and the groove seal is used subsequently. In use, generally use plane seal to seal as main, the groove seal is supplementary sealed, because when the plane seal back that loses efficacy, accessible change briquetting 4 or fastening compress tightly shell 1 and make briquetting 4 continue to compress tightly diaphragm 3, and then resume plane seal's sealed effect, guarantee that the valve body has dual seal effect all the time, the groove seal plays the effect of interim seal after the plane seal loses efficacy.
The top surface of the pressing block 4 is provided with a connecting through hole 401, and an indicating rod in the diaphragm valve is connected with the double-sealing diaphragm 3 after penetrating through the connecting through hole 401. When the diaphragm valve is used, gas needs to be introduced into the pressing shell 1 and is located above the pressing block 4, the gas drives the indicating rod to axially move, the indicating rod drives the moving surface of the double-sealing diaphragm 3 to axially move, and the diaphragm valve is opened. For avoiding the gas that has pressure of 4 top surfaces of briquetting to damage dual sealed diaphragm 3 or influence the normal use of dual sealed diaphragm 3, set up first seal groove 4011 at connect through hole 401 lateral wall, installation sealing ring in first seal groove 4011 makes and forms a seal chamber between briquetting 4 and the dual sealed diaphragm 3, avoids the gas of briquetting 4 top to enter into between briquetting 4 and the diaphragm 3.
During operation of the diaphragm valve, the sealed cavity space between the double-sealing diaphragm 3 and the pressing block 4 can be changed, the pressure of air in the cavity is changed, for ensuring the stability of the air pressure in the cavity, the side wall of the pressing block 4 is provided with the ventilation groove 403 with an annular structure, the ventilation groove 403 is communicated with the bottom surface of the pressing block 4, the side wall of the shell 1 is simultaneously pressed to further provide the first exhaust port 101, the first exhaust port 101 is communicated with the ventilation groove 403, the cavity between the double-sealing diaphragm 3 and the pressing block 4 is communicated with the outside through the ventilation groove 403 and the first exhaust hole, and the pressure of the cavity between the pressing block 4 and the double-sealing diaphragm 3 is always standard atmospheric pressure. Preferably, the ventilation groove 403 is of an annular structure, so that the ventilation groove 403 on the side wall of the pressure block 4 is convenient to communicate with the first exhaust port 101 when the pressure block 4 is installed.
The second seal groove 402 is opened to the briquetting 4 lateral wall, and second seal groove 402 is located ventilative groove 403 top, and second seal groove 402 is arranged in avoiding separating the gas of briquetting 4 top to enter into the air through ventilative groove 403, influences diaphragm valve's performance. Third seal groove 404 has been seted up to briquetting 4 lateral wall, and third seal groove 404 is located ventilative groove 403 below for avoid having the corrosive liquid in the valve body 2 and reveal, or enter into to compress tightly in the shell 1, corrode and compress tightly the interior part of shell 1, lead to the diaphragm valve directly to scrap.
The working principle and the working process of the utility model are as follows:
when the diaphragm valve starts, gas is introduced into the pressing shell 1, and the gas drives the indicating rod to move axially, so that the moving surface of the double-sealing diaphragm 3 is close to the pressing block 4, and the air in the cavity between the double-sealing diaphragm 3 and the pressing block 4 is communicated with the outside through the ventilating groove 403 and the first exhaust port 101, so that the stability of the air pressure in the cavity between the double-sealing diaphragm 3 and the pressing block 4 is ensured.
3 during operations of double seal diaphragm, the plane seal preferentially gets into the use, and 3 bottom surfaces of double seal diaphragm and diaphragm groove 302 bottom surface contact, 3 use the longer time after of double seal diaphragm, and the plane seal became invalid, and sealed boss 301 plays a role with the groove seal of diaphragm groove 302, avoids the liquid in the valve body 2 to reveal, improves the sealed validity of double seal diaphragm 3 in the diaphragm valve.
The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should be covered by the present patent.
Claims (10)
1. A valve body diaphragm sealing assembly comprises a valve body (2), wherein a pressing shell (1) is fixedly arranged on the top surface of the valve body (2), and a double-sealing diaphragm (3) is arranged at the joint of the pressing shell (1) and the valve body (2);
the double-sealing diaphragm is characterized in that a sealing boss (301) is additionally arranged on the bottom surface of the double-sealing diaphragm (3).
2. A valve body diaphragm seal assembly according to claim 1, wherein the sealing boss (301) is located adjacent to the edge of the double sealing diaphragm (3).
3. A valve body diaphragm seal assembly according to claim 1, wherein a press block (4) is fixedly mounted on the top surface of the double sealing diaphragm (3).
4. A valve body diaphragm seal assembly according to claim 3, characterized in that the inner wall of the pressing shell (1) is provided with a pressing boss (102) for fixing the pressing block (4).
5. A valve body diaphragm seal assembly according to claim 3, wherein the top surface of the pressing block (4) is provided with a connecting through hole (401), and the side wall of the connecting through hole (401) is provided with a first seal groove (4011).
6. The valve body diaphragm seal assembly according to claim 3, wherein the side wall of the pressure block (4) is provided with a ventilation groove (403), and the ventilation groove (403) is communicated with the bottom surface of the pressure block (4).
7. The valve body diaphragm seal assembly of claim 6, wherein the side wall of the pressing shell (1) is provided with a first exhaust port (101), and the first exhaust port (101) is communicated with the ventilation groove (403).
8. A valve body diaphragm seal assembly according to claim 6 in which the venting groove (403) is of annular configuration.
9. A valve body diaphragm seal assembly according to claim 3, wherein the side wall of the pressure block (4) is provided with a second seal groove (402) for isolating air.
10. A valve body diaphragm seal assembly according to claim 3, wherein the side wall of the pressure block (4) is provided with a third seal groove (404) for isolating liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121532488.4U CN215831196U (en) | 2021-07-06 | 2021-07-06 | Valve body diaphragm seal assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121532488.4U CN215831196U (en) | 2021-07-06 | 2021-07-06 | Valve body diaphragm seal assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215831196U true CN215831196U (en) | 2022-02-15 |
Family
ID=80191445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121532488.4U Active CN215831196U (en) | 2021-07-06 | 2021-07-06 | Valve body diaphragm seal assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215831196U (en) |
-
2021
- 2021-07-06 CN CN202121532488.4U patent/CN215831196U/en active Active
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