CN210178932U - Double-sealing stop valve - Google Patents
Double-sealing stop valve Download PDFInfo
- Publication number
- CN210178932U CN210178932U CN201920291906.1U CN201920291906U CN210178932U CN 210178932 U CN210178932 U CN 210178932U CN 201920291906 U CN201920291906 U CN 201920291906U CN 210178932 U CN210178932 U CN 210178932U
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- Prior art keywords
- valve
- sealing
- valve seat
- section
- double
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- Expired - Fee Related
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Abstract
The utility model provides a double-sealing stop valve, which comprises a valve body, a valve rod, a valve cover and a transmission mechanism; a valve seat is arranged between the inlet channel and the outlet channel of the valve body; the central line of the valve body channel is horizontally arranged on the pipeline; a sealing body is arranged in a side valve cavity at the outlet of the valve seat connected with the transmission mechanism at the upper end of the valve rod; the valve seat is provided with a filtering section towards the inlet of the valve body; the valve seat is clamped with the sealing body by adopting a convex sealing surface; the valve body is positioned on one section of the valve cover and is sleeved with the sealing barrel and the spring from inside to outside in sequence. The utility model discloses a twice seal structure has improved its leakproofness. One sealing structure comprises a valve rod, a sealing body and a convex sealing surface; the valve rod pressing sealing body is matched and sealed with the sealing surface of the valve seat bulge; and the other sealing structure comprises a spring, a valve cover and a sealing barrel, and the sealing barrel keeps high fitting degree with the valve rod under the action of the spring, so that good sealing performance is realized.
Description
Technical Field
The utility model belongs to the technical field of the valve, especially, relate to a double sealing stop valve.
Background
The stop valve is also called as a stop valve and belongs to a forced sealing type valve, so that when the valve is closed, pressure must be applied to a valve rod to force a sealing surface not to leak; the existing stop valve has certain defects when in use, the stop valve is used, stones and the like in sewage easily damage the valve body, impurities are easily accumulated on a sealing surface of a valve seat, and certain influence is caused on the sealing of the stop valve. To this end, we propose a double seal shut-off valve.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a double sealing stop valve to solve the poor problem of leakproofness among the prior art. In order to achieve the above object, the utility model adopts the following technical scheme:
a double-seal stop valve comprises a valve body, a valve rod, a valve cover and a transmission mechanism; a valve seat is arranged between the inlet channel and the outlet channel of the valve body; the central line of the valve body channel is horizontally arranged on the pipeline; the upper end of the valve rod is connected with the transmission mechanism; a sealing body is arranged in a side valve cavity at the outlet of the valve seat; the valve seat is provided with a filter section facing the inlet of the valve body; the valve seat is clamped with the sealing body by adopting a convex sealing surface; the valve body is positioned on one section of the valve cover and is sequentially sleeved with the sealing barrel and the spring from inside to outside.
Preferably, the sealing body comprises a hemisphere and an embedded section; the hemisphere is connected with the embedded section through a concave surface; the concave surface is engaged with the sealing surface.
Preferably, the diameter of the hemisphere is larger than the diameter of the valve stem.
Preferably, the filter segment is a filter layer.
Preferably, further comprises a pre-filtering section; the pre-filtering section is arranged on the water inlet section of the valve seat; the pre-filtering section is fixed on the inner wall of the upper part of the valve seat; the pre-filtering section is a baffle plate which is obliquely arranged.
Preferably, further comprising a flushing port; the flushing hole is positioned between the pre-filtering section and the sealing body; the flushing hole is formed in the valve seat and communicated with the sealing surface.
Preferably, the filter segment is a rigid layer.
Compared with the prior art, the utility model has the advantages that: through twice seal structure, improved its leakproofness. One sealing structure comprises a valve rod, a sealing body and a convex sealing surface; the valve rod pressing sealing body embedding section is mutually matched and sealed with the convex sealing surface of the valve seat through a concave surface; in a forward opening state, forward medium pressure overcomes the weight of the sealing body to push the sealing body open the valve; when the medium pressure is reversed, the sealing body and the valve seat are compressed and sealed after the reversed medium pressure is superposed with the weight of the sealing body; impurities are not easy to accumulate on the convex sealing surface, so that the high fit between the sealing surface and the sealing body is ensured; and the other sealing structure comprises a spring, a valve cover and a sealing barrel, and the sealing barrel keeps high fitting degree with the valve rod under the action of the spring, so that good sealing performance is realized.
Drawings
Fig. 1 is a schematic structural view of a double-seal stop valve according to an embodiment of the present invention.
The device comprises a valve body 1, a valve rod 2, a valve cover 3, a transmission mechanism 4, a sealing body 5, a valve seat 6, a sealing cylinder 7, a spring 8, a pre-filtering section 9, a flushing hole 10 and a filtering section 11.
Detailed Description
The double seal stop valve of the present invention will now be described in greater detail with reference to the schematic drawings in which the preferred embodiments of the invention are shown, it being understood that those skilled in the art may modify the invention herein described while still achieving the beneficial results of the invention. Accordingly, the following description should be construed as broadly as possible to those skilled in the art and not as limiting the invention.
As shown in fig. 1, the double-seal stop valve comprises a valve body 1, a valve rod 2, a valve cover 3 and a transmission mechanism 4; a valve seat 6 is arranged between an inlet channel and an outlet channel of the valve body 1; the central line of the channel of the valve body 1 is horizontally arranged on the pipeline; the upper end of the valve rod 2 is connected with a transmission mechanism 4; a sealing body 5 is arranged in a side valve cavity at the outlet of the valve seat 6; the valve seat 6 is clamped with the sealing body 5 by adopting a convex sealing surface; the valve seat 6 is provided with a filter section 11 facing the inlet of the valve body 1; the valve body 1 is positioned on one section of the valve cover 3 and is sequentially sleeved with a sealing cylinder 7 and a spring 8 from inside to outside.
In the present embodiment, the sealing body 5 includes a hemisphere 51 and an embedded section; the hemisphere 51 is connected with the embedded section through a concave surface; the concave surface is engaged with the sealing surface.
In this embodiment, the diameter of the hemisphere 51 is larger than the diameter of the valve stem 2, so that the valve stem 2 can be pressed against the hemisphere 51 quickly.
In the present embodiment, the filter segment 11 is a filter layer for filtering impurities in the liquid flowing into the valve body 1.
In the present embodiment, further comprises a pre-filtering section 9; the pre-filtering section 9 is arranged at the water inlet section of the valve seat 6; the pre-filtering section 9 is fixed on the inner wall of the upper part of the valve seat 6; the pre-filtering section 9 is a baffle plate which is obliquely arranged and can retain a part of impurities in the liquid in the valve body 1 to prevent the impurities from accumulating on a sealing surface.
In the present embodiment, the washing device further includes a washing hole 10; the flushing hole 10 is positioned between the pre-filtering section 9 and the sealing body 5; the flushing hole 10 is formed in the valve seat 6 and communicated with the sealing surface, liquid subjected to primary filtering flows through the flushing hole 10 to further flush the sealing surface, and impurities are prevented from being accumulated.
In this embodiment, the filter segment 11 is a rigid layer to withstand the flow pressure of the liquid.
To sum up, the embodiment of the utility model provides an among the double sealing stop valve, through twice seal structure, improved its leakproofness. One of the sealing structures comprises a valve rod 2, a hemisphere 51 and a convex sealing surface; the valve rod 2 compresses the hemisphere 51, and the embedded section is mutually matched and sealed with the convex sealing surface of the valve seat 6 through the concave surface; in a forward opening state, the forward medium pressure overcomes the weight of the sealing body 5, and pushes the sealing body 5 open the valve; when the medium pressure is reversed, the ball body and the valve seat 6 are compressed and sealed after the reversed medium pressure is superposed with the weight of the sealing body 5; impurities are not easy to accumulate on the convex sealing surface, so that the high fit between the sealing surface and the sealing body 5 is ensured; the other sealing structure comprises a spring 8, a valve cover 3 and a sealing cylinder 7, and the sealing cylinder 7 keeps high fitting degree with the valve rod 2 under the action of the spring 8, so that good sealing performance is realized.
The above description is only for the preferred embodiment of the present invention, and does not limit the present invention. Any technical personnel who belongs to the technical field, in the scope that does not deviate from the technical scheme of the utility model, to the technical scheme and the technical content that the utility model discloses expose do the change such as the equivalent replacement of any form or modification, all belong to the content that does not break away from the technical scheme of the utility model, still belong to within the scope of protection of the utility model.
Claims (7)
1. A double-seal stop valve comprises a valve body, a valve rod, a valve cover and a transmission mechanism; a valve seat is arranged between the inlet channel and the outlet channel of the valve body; the central line of the valve body channel is horizontally arranged on the pipeline; the upper end of the valve rod is connected with the transmission mechanism; the sealing device is characterized in that a sealing body is arranged in a side valve cavity at the outlet of the valve seat; the valve seat is provided with a filter section facing the inlet of the valve body; the valve seat is clamped with the sealing body by adopting a convex sealing surface; the valve body is positioned on one section of the valve cover and is sequentially sleeved with the sealing barrel and the spring from inside to outside.
2. The double seal stop valve of claim 1, wherein the seal body comprises a hemisphere and an embedded section; the hemisphere is connected with the embedded section through a concave surface; the concave surface is engaged with the sealing surface.
3. The double-seal shut-off valve of claim 2, wherein the hemisphere has a diameter greater than a diameter of the valve stem.
4. The double seal shut-off valve of claim 1, wherein said filter segment is a filter layer.
5. The double seal shut-off valve of claim 1, further comprising a pre-filter section; the pre-filtering section is arranged on the water inlet section of the valve seat; the pre-filtering section is fixed on the inner wall of the upper part of the valve seat; the pre-filtering section is a baffle plate which is obliquely arranged.
6. The double seal shut-off valve of claim 5, further comprising a flushing orifice; the flushing hole is positioned between the pre-filtering section and the sealing body; the flushing hole is formed in the valve seat and communicated with the sealing surface.
7. The double seal shut-off valve of claim 1, wherein the filter segment is a rigid layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920291906.1U CN210178932U (en) | 2019-03-07 | 2019-03-07 | Double-sealing stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920291906.1U CN210178932U (en) | 2019-03-07 | 2019-03-07 | Double-sealing stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210178932U true CN210178932U (en) | 2020-03-24 |
Family
ID=69829605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920291906.1U Expired - Fee Related CN210178932U (en) | 2019-03-07 | 2019-03-07 | Double-sealing stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210178932U (en) |
-
2019
- 2019-03-07 CN CN201920291906.1U patent/CN210178932U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200324 |