CN210716069U - Ball valve with one-way piston and double seals - Google Patents
Ball valve with one-way piston and double seals Download PDFInfo
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- CN210716069U CN210716069U CN201921805213.6U CN201921805213U CN210716069U CN 210716069 U CN210716069 U CN 210716069U CN 201921805213 U CN201921805213 U CN 201921805213U CN 210716069 U CN210716069 U CN 210716069U
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- valve seat
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- disk seat
- ball
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- 238000007789 sealing Methods 0.000 claims abstract description 53
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 abstract description 3
- 239000007787 solid Substances 0.000 abstract description 3
- 230000009977 dual effect Effects 0.000 abstract 1
- 230000000903 blocking effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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Abstract
The utility model belongs to the valve field, concretely relates to one-way piston dual seal's ball valve, which comprises a valve body, set up the ball core in the well intracavity of valve body and set up the disk seat between valve body and ball core, the disk seat is including the outer disk seat that is located the outer end and the interior disk seat that is located inner, interior disk seat and outer disk seat looks lock, the front end of outer disk seat is connected between the spring hole of seting up on the valve body inner wall and is set up the spring, the rear end is hugged closely with the ball core, set up first sealing washer between the front end of interior disk seat and the valve body inner wall, the rear end and the ball core of interior disk seat are hugged closely, the rear end of outer disk seat, set up the second sealing washer in the clearance that forms. The utility model adopts a combined sealing structure, the valve seat is used as primary seal, and the damage of solid particles to the sealing surface can be effectively prevented; the sealing ring is used as secondary seal, and the sealing requirement of zero leakage of the valve can be met.
Description
Technical Field
The utility model belongs to the valve field, concretely relates to one-way piston double seal's ball valve.
Background
The ball valve is matched with a multi-spring pneumatic or electric actuating mechanism, and has the advantages of compact structure, high flow capacity, reliable sealing, convenient maintenance, disassembly and assembly and the like. The cutting device is widely applied to cutting of conveying pipelines, oil tankers and tank trucks in the industrial fields of chemical industry, petroleum industry, pharmacy, papermaking, metallurgy, sewage treatment and the like. The valve is suitable for various working conditions by matching with different valve internal parts.
In recent years, the domestic valve industry is rapidly developed, and the product structure types of various valve manufacturers are infinite. As shown in fig. 1, a general ball valve includes a valve body, a valve seat 2 and a ball core 3, the valve body is composed of a connector 1 and a middle body 9, the ball core 3 is installed in a middle cavity 4 of the valve body, the valve seat 2 is installed between the ball core 3 and the valve body, the ball valve adopts single-seal of the valve seat, and the disadvantage is that: the use reliability is relatively low, and the sealing performance is easily deteriorated after the valve seat is deformed, fatigued or damaged, so that the use effect is influenced.
SUMMERY OF THE UTILITY MODEL
In order to compensate for the defects of the prior art, the utility model provides an one-way piston double seal's ball valve technical scheme.
A ball valve of one-way piston double seal, including the valve body, set up the ball core in the well intracavity of valve body and set up the disk seat between valve body and ball core, its characterized in that the disk seat is including the outer disk seat that is located the outer end and the interior disk seat that is located inner, interior disk seat and outer disk seat looks lock, the front end of outer disk seat with set up to be connected between the spring hole on the valve body inner wall and set up the spring, the rear end is hugged closely with the ball core, set up first sealing washer between the front end of interior disk seat and the valve body inner wall, the rear end of interior disk seat is hugged closely with the ball core, set up the second sealing washer in the clearance that forms between the rear end of outer disk seat, the rear end of interior disk.
The ball valve with the one-way piston double seal is characterized in that the front inner end of the outer valve seat is provided with an inwards concave L-shaped surface, the rear outer end of the inner valve seat is provided with an outwards convex L-shaped surface, and the two L-shaped surfaces are buckled with each other.
The ball valve with the one-way piston double sealing is characterized in that a groove is formed in the inner side of the front end of the outer valve seat, a clamping ring is arranged in the groove, and the clamping ring is in blocking connection with the inner valve seat.
The ball valve with the one-way piston double sealing is characterized in that the valve body comprises a connecting body and a middle body which are fixedly connected.
The one-way piston double-sealing ball valve is characterized in that a sealing gasket and a third sealing ring are arranged between the connecting body and the intermediate body.
The one-way piston double-sealing ball valve is characterized in that the sealing gasket is a graphite sealing gasket, and the first sealing ring, the second sealing ring and the third sealing ring are all rubber O-shaped rings.
The utility model has the advantages that: the utility model adopts a combined sealing structure, the valve seat is used as primary seal, and the damage of solid particles to the sealing surface can be effectively prevented; the sealing ring is used as secondary seal, and the sealing requirement of zero leakage of the valve can be met.
Drawings
FIG. 1 is a schematic view of a prior art ball valve;
fig. 2 is a schematic structural diagram of the present invention.
In the figure: the connecting body 1, 100, the valve seat 2, the outer valve seat 200, the inner valve seat 201, the ball core 3, the middle cavity 4, the spring 5, the first sealing ring 6, the second sealing ring 7, the clamping ring 8, the middle body 9, the sealing gasket 10 and the third sealing ring 11.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 2, a ball valve with one-way piston double sealing, which comprises a valve body, a ball core 3 arranged in a middle cavity 4 of the valve body and a valve seat 2 arranged between the valve body and the ball core 3, wherein the valve seat 2 comprises an outer valve seat 200 positioned at the outer end and an inner valve seat 201 positioned at the inner end, the inner valve seat 201 is buckled with the outer valve seat 200, a spring 5 is connected and arranged between the front end of the outer valve seat 200 and a spring hole 100 arranged on the inner wall of the valve body, the rear end is tightly attached to the ball core 3, a first sealing ring 6 is arranged between the front end of the inner valve seat 201 and the inner wall of the valve body, the rear end of the inner valve seat 201 is tightly attached to the ball core 3, and a second sealing ring 7 is arranged in a gap formed between the rear end of the outer.
As the utility model discloses an optimize structure: the front inner end of the outer valve seat 200 is provided with an inwards concave L-shaped surface, the rear outer end of the inner valve seat 201 is provided with an outwards convex L-shaped surface, and the two L-shaped surfaces are buckled with each other, so that the outer valve seat 200 and the inner valve seat 201 are connected more tightly.
As the utility model discloses an optimize structure: the inner side of the front end of the outer valve seat 200 is provided with a groove, a clamping ring 8 is arranged in the groove, the clamping ring 8 is in blocking connection with the inner valve seat 201, and the clamping ring 8 enables the outer valve seat 200 to be connected with the inner valve seat 201 more tightly.
As the utility model discloses an optimize structure: the valve body comprises a fixedly connected connecting body 1 and a middle body 9.
As the utility model discloses an optimize structure: and a sealing gasket 10 and a third sealing ring 11 are arranged between the connecting body 1 and the middle body 9.
As the utility model discloses an optimize structure: the sealing gasket 10 is a graphite sealing gasket, and the first sealing ring 6, the second sealing ring 7 and the third sealing ring 11 are all rubber O-shaped rings.
The utility model adopts a combined sealing structure, the valve seat is used as primary seal, and the damage of solid particles to the sealing surface can be effectively prevented; the rubber O-shaped ring is used as secondary seal, and the sealing requirement of zero leakage of the valve can be met. And under the action of the piston effect, after the upstream valve seat is damaged, the fluid flows into the middle cavity, and the pressure of the middle cavity is higher than that of the downstream valve, so that the whole ball valve still cannot leak.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (6)
1. A ball valve with one-way piston double sealing, which comprises a valve body, a ball core (3) arranged in a middle cavity (4) of the valve body and a valve seat (2) arranged between the valve body and the ball core (3), the novel ball valve is characterized in that the valve seat (2) comprises an outer valve seat (200) located at the outer end and an inner valve seat (201) located at the inner end, the inner valve seat (201) is buckled with the outer valve seat (200), a spring (5) is connected between the front end of the outer valve seat (200) and a spring hole (100) formed in the inner wall of the valve body, the rear end of the outer valve seat (200) is tightly attached to the ball core (3), a first sealing ring (6) is arranged between the front end of the inner valve seat (201) and the inner wall of the valve body, the rear end of the inner valve seat (201) is tightly attached to the ball core (3), and a second sealing ring (7) is arranged in a gap formed between the rear end of the outer valve seat (200), the rear end of the inner valve seat (201).
2. A one-way piston double-seal ball valve according to claim 1, characterized in that the front inner end of the outer valve seat (200) has a concave L-shaped surface, the rear outer end of the inner valve seat (201) has a convex L-shaped surface, and the two L-shaped surfaces are buckled with each other.
3. A one-way piston double-sealed ball valve according to claim 1, wherein the front end of the outer valve seat (200) has a groove inside, a collar (8) is arranged in the groove, and the collar (8) is blocked with the inner valve seat (201).
4. A one-way piston double-sealed ball valve according to any one of claims 1-3, characterized in that said valve body comprises a fixedly connected connecting body (1) and a central body (9).
5. A one-way piston double-sealed ball valve according to claim 4, characterized in that a sealing gasket (10) and a third sealing ring (11) are arranged between the connecting body (1) and the intermediate body (9).
6. A one-way piston double-sealing ball valve according to claim 5, characterized in that the sealing gasket (10) is a graphite sealing gasket, and the first sealing ring (6), the second sealing ring (7) and the third sealing ring (11) are all rubber O-rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921805213.6U CN210716069U (en) | 2019-10-25 | 2019-10-25 | Ball valve with one-way piston and double seals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921805213.6U CN210716069U (en) | 2019-10-25 | 2019-10-25 | Ball valve with one-way piston and double seals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210716069U true CN210716069U (en) | 2020-06-09 |
Family
ID=70928698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921805213.6U Active CN210716069U (en) | 2019-10-25 | 2019-10-25 | Ball valve with one-way piston and double seals |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210716069U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119664943A (en) * | 2025-01-17 | 2025-03-21 | 北京航天试验技术研究所 | A bidirectional sealing structure for large-diameter ball valves |
-
2019
- 2019-10-25 CN CN201921805213.6U patent/CN210716069U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119664943A (en) * | 2025-01-17 | 2025-03-21 | 北京航天试验技术研究所 | A bidirectional sealing structure for large-diameter ball valves |
| CN119664943B (en) * | 2025-01-17 | 2025-12-09 | 北京航天试验技术研究所 | Bidirectional sealing structure for large-caliber ball valve |
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