CN220551530U - Hard sealing ball valve of corrugated pipe valve seat - Google Patents
Hard sealing ball valve of corrugated pipe valve seat Download PDFInfo
- Publication number
- CN220551530U CN220551530U CN202322183767.XU CN202322183767U CN220551530U CN 220551530 U CN220551530 U CN 220551530U CN 202322183767 U CN202322183767 U CN 202322183767U CN 220551530 U CN220551530 U CN 220551530U
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- China
- Prior art keywords
- valve
- valve body
- ball core
- upper platform
- valve seat
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- 238000007789 sealing Methods 0.000 title claims abstract description 31
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 238000012856 packing Methods 0.000 claims description 13
- 229910002804 graphite Inorganic materials 0.000 claims description 7
- 239000010439 graphite Substances 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 210000004907 gland Anatomy 0.000 claims description 4
- 238000003466 welding Methods 0.000 abstract description 6
- 230000007774 longterm Effects 0.000 abstract description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000011863 silicon-based powder Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
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- Taps Or Cocks (AREA)
- Details Of Valves (AREA)
Abstract
The utility model discloses a hard sealing ball valve of a corrugated pipe valve seat, which comprises a valve body, an upper platform, a lower fixed shaft, flanges, a valve seat, a ball core and a valve rod, wherein the upper platform is fixedly arranged right above the valve body, the lower fixed shaft is correspondingly and fixedly arranged right below the valve body, a pair of flanges are fixedly arranged on the left side and the right side of the valve body through bolts, the ball core is rotatably arranged at the center of the inside of the valve body, the valve rod penetrates into the valve body from the upper platform, and the end part of the lower fixed shaft penetrates into the valve body and is inserted into a rectangular hole at the lower part of the ball core. The valve seat comprises an inner sealing surface, an outer fixing surface and a corrugated pipe connected to the middle part, the outer fixing surface is welded with the inner wall of the flange, and the inner sealing surface is tightly attached to the outer peripheral surface of the ball core. According to the utility model, the valve seat and the flange are fixed by welding, so that a leakage channel is reduced, and meanwhile, the elastic compensation performance of the corrugated pipe is utilized to ensure that the valve seat is tightly attached to the ball core all the time, so that long-term effective sealing is realized.
Description
Technical Field
The utility model relates to the technical field of ball valves, in particular to a hard sealing ball valve with a corrugated pipe valve seat.
Background
At present, in many chemical industries, a plurality of working conditions of gas and hard particles exist, for example, reducing tail gas of silicon chemical industry, a medium contains hydrogen and silicon powder, the molecular weight of the hydrogen is very small and is easy to leak, and the hardness of the silicon powder is very high and is easy to wear.
The sealing surface of the existing fluorine-lined valve is worn seriously, needs to be replaced frequently and cannot be used directly at high temperature.
The valve seat of the existing metal hard sealing ball valve is floating, and gas leakage is easy to occur in the valve seat cavity after the valve is used for a long time, so that the valve is in sealing failure.
Disclosure of Invention
In order to solve the technical problems in the background art, the utility model provides the hard sealing ball valve with the corrugated pipe valve seat, which has a good sealing effect.
The utility model adopts the following technical scheme: a hard sealing ball valve of a corrugated pipe valve seat comprises a valve body, an upper platform, a lower fixed shaft, a flange, a valve seat, a ball core and a valve rod; the upper platform is fixedly arranged right above the valve body; the lower fixed shaft is correspondingly and fixedly arranged right below the valve body; the flanges are fixedly arranged on the left side and the right side of the valve body through bolts; the ball core is rotatably arranged in the center of the valve body; the valve rod penetrates into the valve body from the upper platform; the square tenon at the lower end of the valve rod is inserted into the rectangular hole at the upper part of the ball core so as to drive the valve rod to rotate; the end part of the lower fixed shaft penetrates into the valve body and is inserted into a rectangular hole at the lower part of the ball core; the bottom of the upper platform is abutted against a flange of the valve rod above the square tenon; the pair of valve seats are correspondingly arranged in the flanges; the pair of valve seats comprises an inner sealing surface, an outer fixing surface and a corrugated pipe connected to the middle part; the outer fixing surface is welded with the inner wall of the flange; the inner sealing surface is closely attached to the outer peripheral surface of the ball core.
Further, a pair of flanges, a lower fixed shaft and an upper platform are respectively sealed with the valve body through graphite gaskets.
Further, a sealing retainer ring is axially arranged on the outer sides of the pair of flanges.
Further, a packing cavity is arranged in the upper platform, and a polytetrafluoroethylene or graphite packing is arranged in the packing cavity and is pre-tightly sealed through a packing gland.
Compared with the prior art, the utility model has the advantages that: the hard sealing ball valve of the corrugated pipe valve seat has a simple structure, the valve seat and the flange are fixed through welding, a leakage channel is reduced, meanwhile, the elastic compensation performance of the corrugated pipe is utilized, the valve seat and the ball core are always ensured to be tightly attached, and long-term effective sealing is realized.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a bellows seat hard seal ball valve of the present utility model;
FIG. 2 is an internal cross-sectional view of a bellows seat hard seal ball valve of the present utility model;
wherein:
1-flange, 2-valve seat, 3-sealing retainer ring, 4-ball core, 5-valve rod, 6-upper platform, 7-filler, 8-filler gland, 9-valve body, 10-lower fixed shaft, 11-graphite pad,
21-inner sealing surface, 22-outer fixing surface, 23-corrugated pipe,
51-square tenons and 52-flanges.
Detailed Description
In the following, in order to facilitate the understanding of the technical solutions of the present utility model by a person skilled in the art, reference will be made to the accompanying drawings for further description. It should be understood that the description is only illustrative and is not intended to limit the scope of the utility model.
In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the utility model. It may be evident, however, that one or more embodiments may be practiced without these specific details. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present utility model.
As shown in fig. 1 and 2, the bellows valve seat hard seal ball valve integrally comprises a valve body 9, an upper platform 6, a lower fixing shaft 10, a flange 1, a valve seat 2, a ball core 4 and a valve rod 5. The upper platform 6 is fixedly arranged right above the valve body 9, the lower fixing shaft 10 is correspondingly and fixedly arranged right below the valve body 9, the pair of flanges 1 are fixedly arranged on the left side and the right side of the valve body 9 through bolts, the ball core 4 is rotatably arranged in the center of the valve body 9, the valve rod 5 penetrates into the valve body 9 from the upper platform 6, and the square tenon 51 at the lower end of the valve rod 5 is inserted into the rectangular hole at the upper part of the ball core 4 so as to drive the valve rod to rotate. The end part of the lower fixed shaft 10 penetrates into the valve body 9 and is inserted into a rectangular hole at the lower part of the ball core 4, the bottom of the upper platform 6 is abutted on a flange 52 of the valve rod 9 above the square tenon 51, and the blowout prevention function of the valve rod is realized. The pair of valve seats 2 are provided in the pair of flanges 1. The valve seat 2 in this embodiment is formed into an integral structure by welding a bellows combination, and includes an inner sealing surface 21, an outer fixing surface 22, and a bellows 23 connected to a middle portion. The outer fixing surface 22 is welded with the inner wall of the flange 1, and the inner sealing surface 21 is sprayed or welded with hard alloy for hardening treatment, so that the hardness and the wear resistance are improved. The valve seat 2 and the flange 1 are fixed into a whole through welding, so that zero leakage of the valve seat cavity is realized.
The inner seal surface 21 is closely fitted to the outer peripheral surface of the core 4. The valve seat 2 uses the elasticity of the corrugated pipe to enable the inner sealing surface 21 to always be attached to the periphery of the ball core 4, so that the valve can be effectively sealed.
In the present embodiment, for the sealing performance of the whole ball valve, the pair of flanges 1, the lower fixing shaft 10 and the upper table 6 are sealed with the valve body 9 by graphite gaskets 11.
In addition, in the present embodiment, a gasket 3 is provided axially outside the pair of flanges 1. By means of the threaded connection, the welding points of the flange 1 and the valve seat 2 are protected from flushing.
In the embodiment, a packing cavity is arranged in the upper platform 6, a tetrafluoro or graphite packing 7 is arranged in the packing cavity, and the packing cavity is pre-tightly sealed through a packing gland 8, so that the sealing of the valve rod 5 is realized.
In summary, the hard sealing ball valve of the corrugated pipe valve seat has a simple structure, the valve seat and the flange are fixed through welding, a leakage channel is reduced, meanwhile, the elastic compensation performance of the corrugated pipe is utilized, the valve seat and the ball core are always ensured to be tightly attached, and long-term effective sealing is realized.
The above examples are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solution of the present utility model should fall within the scope of protection defined by the claims of the present utility model without departing from the spirit of the present utility model.
Claims (4)
1. The hard sealing ball valve of the corrugated pipe valve seat is characterized by comprising a valve body (9), an upper platform (6), a lower fixed shaft (10), a flange (1), a valve seat (2), a ball core (4) and a valve rod (5); the upper platform (6) is fixedly arranged right above the valve body (9); the lower fixed shaft (10) is correspondingly and fixedly arranged under the valve body (9); the pair of flanges (1) are fixedly arranged on the left side and the right side of the valve body (9) through bolts; the ball core (4) is rotatably arranged in the center of the valve body (9); the valve rod (5) penetrates into the valve body (9) from the upper platform (6); a square tenon (51) at the lower end of the valve rod (5) is inserted into a rectangular hole at the upper part of the ball core (4) so as to drive the ball core to rotate; the end part of the lower fixed shaft (10) penetrates into the valve body (9) and is inserted into a rectangular hole at the lower part of the ball core (4); the bottom of the upper platform (6) is abutted against a flange (52) of the valve rod (5) above the square tenon (51); the pair of valve seats (2) are correspondingly arranged in the pair of flanges (1); the pair of valve seats (2) comprises an inner sealing surface (21), an outer fixing surface (22) and a corrugated pipe (23) connected to the middle part; the outer fixing surface (22) is welded with the inner wall of the flange (1); the inner sealing surface (21) is closely attached to the outer peripheral surface of the ball core (4).
2. A bellows valve seat hard seal ball valve according to claim 1, wherein a pair of the flange (1), the lower fixed shaft (10) and the upper platform (6) are sealed with the valve body (9) by graphite gaskets (11), respectively.
3. A bellows seat hard seal ball valve according to claim 2, wherein a sealing collar (3) is axially disposed on the outside of a pair of said flanges (1).
4. A bellows valve seat hard seal ball valve according to claim 3, wherein a packing cavity is arranged in the upper platform (6), and a tetrafluoro or graphite packing (7) is arranged in the packing cavity and is pre-tightly sealed by a packing gland (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322183767.XU CN220551530U (en) | 2023-08-15 | 2023-08-15 | Hard sealing ball valve of corrugated pipe valve seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322183767.XU CN220551530U (en) | 2023-08-15 | 2023-08-15 | Hard sealing ball valve of corrugated pipe valve seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220551530U true CN220551530U (en) | 2024-03-01 |
Family
ID=90008300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322183767.XU Active CN220551530U (en) | 2023-08-15 | 2023-08-15 | Hard sealing ball valve of corrugated pipe valve seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220551530U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118293244A (en) * | 2024-06-04 | 2024-07-05 | 四川苏克流体控制设备股份有限公司 | High-temperature top-mounted metal sealing ball valve |
-
2023
- 2023-08-15 CN CN202322183767.XU patent/CN220551530U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118293244A (en) * | 2024-06-04 | 2024-07-05 | 四川苏克流体控制设备股份有限公司 | High-temperature top-mounted metal sealing ball valve |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |