CN216479020U - Airtight single-gate valve - Google Patents
Airtight single-gate valve Download PDFInfo
- Publication number
- CN216479020U CN216479020U CN202123092851.8U CN202123092851U CN216479020U CN 216479020 U CN216479020 U CN 216479020U CN 202123092851 U CN202123092851 U CN 202123092851U CN 216479020 U CN216479020 U CN 216479020U
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- Prior art keywords
- valve
- valve seat
- seat
- packing
- limiting ring
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- 238000000034 method Methods 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 29
- 238000012856 packing Methods 0.000 claims description 26
- 210000004907 gland Anatomy 0.000 claims description 12
- 230000000712 assembly Effects 0.000 claims description 8
- 238000000429 assembly Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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Abstract
The utility model provides an airtight single-gate board gate valve which characterized in that: the valve seat assembly comprises a limiting ring and a valve seat, a valve seat mounting groove is formed in the inner wall of the medium channel, the limiting ring is mounted at one end, close to the flashboard, of the valve seat mounting groove, the valve seat can be slidably mounted in the valve seat mounting groove and is in limiting fit with the limiting ring, a first pressure cavity is formed between one end of the valve seat and the valve body, a second pressure cavity is formed between the other end of the valve seat and the limiting ring, a plurality of air pipelines are further formed on the valve body, and the air pipelines are respectively communicated with the first pressure cavity or the second pressure cavity. When the valve is closed, can be through admitting air toward first pressure intracavity, promote the disk seat and tightly press on the flashboard to form good sealed effect, the valve is opened and close the in-process, can be through admitting air toward second pressure intracavity, promotes disk seat and flashboard separation and keeps certain clearance, makes the flashboard at gliding in-process from top to bottom, does not contact with the disk seat, makes no friction between the two, avoids the problem that the sealed face of operation pulled, and life is longer.
Description
Technical Field
The utility model relates to a valve technical field, concretely relates to airtight single-disc gate valve.
Background
The gate valve is characterized in that an opening and closing part is a gate plate, the moving direction of the gate plate is perpendicular to the fluid direction, and the gate valve can only be fully opened and fully closed and cannot be adjusted and throttled. Gate valves are sealed by the contact of the valve seat and gate plate, and the sealing surface is usually welded with metal materials to increase wear resistance, such as 1Cr13, STL6, stainless steel, etc. The flat gate valve is a slide valve with parallel gates as its opening and closing member, such as a single gate valve.
However, in the opening and closing process of the existing single-gate-plate gate valve, the gate plate and the valve seat are in contact friction with each other, the friction resistance is large, the opening and closing operation is more difficult, and the sealing surface can be pulled by the Caocao sealing surface due to continuous sliding friction, so that the service life is influenced.
SUMMERY OF THE UTILITY MODEL
In order to overcome the not enough of background art, the utility model provides an airtight single flashboard gate valve.
The utility model discloses the technical scheme who adopts: an air-tight single-gate-plate gate valve comprises a valve body, valve seat assemblies, gate plates, a valve cover and a valve rod, wherein a medium channel for medium circulation is formed in the valve body, the valve seat assemblies are arranged in the medium channel of the valve body, the gate plates are arranged between the two groups of valve seat assemblies and can be in sealing fit with the valve seat assemblies, the valve cover is fixedly arranged at the upper end of the valve body, one end of the valve rod is connected with the gate plates, and the other end of the valve rod extends out of the valve cover and is connected with an operation actuator; the valve seat assembly comprises a limiting ring and a valve seat, wherein a valve seat mounting groove is formed in the inner wall of the medium channel, the limiting ring is mounted at one end, close to the flashboard, of the valve seat mounting groove, the valve seat can be slidably mounted in the valve seat mounting groove and is in limiting fit with the limiting ring, a first pressure cavity is formed between one end of the valve seat and the valve body, a second pressure cavity is formed between the other end of the valve seat and the limiting ring, a plurality of air pipelines are further formed on the valve body, and the air pipelines are respectively communicated with the first pressure cavity or the second pressure cavity.
The limiting ring comprises three open rings and a supporting seat, a limiting groove is formed in the inner wall of the medium channel, and the three open rings are arranged in the limiting groove and connected with the supporting seat into a whole through bolts.
The valve seat is provided with a first extending boss and a second extending boss which extend from two ends of the valve seat respectively, a first sealing ring is arranged between the first extending boss and the medium channel, a second sealing ring is arranged between the valve seat and the valve seat mounting groove, a third sealing ring is arranged between the second extending boss and the supporting seat, a fourth sealing ring is arranged between the supporting seat and the valve body, and a sealing surface matched with the flashboard is formed at the end part of the second extending boss.
Be equipped with the packing assembly between valve gap upper end and the valve rod, the packing assembly includes from supreme packing pad, filler, packing pressure cover, the gland that sets gradually down, gland passes through bolted connection with the valve gap, the bolt overcoat is equipped with dish spring group, dish spring group and gland butt order about gland and compress tightly packing pressure cover, filler and packing pad.
The utility model has the advantages that: scheme more than adopting, when the valve is closed, can be through admitting air toward first pressure intracavity, promote the disk seat and tightly press on the flashboard to form good sealed effect, at the valve in-process of opening and close, can be through admitting air toward second pressure intracavity, promote disk seat and flashboard separation and keep certain clearance, make the flashboard at gliding in-process from top to bottom, do not contact with the disk seat, make no friction between the two, avoid the problem that the sealed face of operation pulled, life is longer.
Drawings
Fig. 1 is a schematic structural diagram 1 of the airtight single-gate valve of the embodiment of the present invention.
Fig. 2 is the structural schematic diagram 2 of the airtight single-gate valve of the embodiment of the present invention.
Fig. 3 is a schematic structural diagram 3 of the airtight single-gate valve of the embodiment of the present invention.
Fig. 4 is an enlarged view of fig. 1A when the valve is closed.
FIG. 5 is an enlarged view of FIG. 1A during the opening and closing of the valve.
Detailed Description
The embodiments of the present invention will be further explained with reference to the accompanying drawings:
as shown in the figure, the air-tight single-gate-plate gate valve comprises a valve body 1, a valve seat assembly 2, a gate plate 3, a valve cover 4 and a valve rod 5.
Wherein, a valve seat mounting groove 12 and a limit groove 14 are sequentially formed on the inner wall of the medium channel 11 of the valve body 1 near the middle cavity,
the valve seat assembly 2 comprises a limiting ring 21 and a valve seat 22, wherein the limiting ring 21 comprises three open rings 211 and a supporting seat 212, the three open rings are arranged in a limiting groove 14 and are connected with the supporting seat into a whole through bolts, so that the limiting ring 21 is reliably limited in the limiting groove 14. Of course, the three-open loop can be replaced by two-open loop, four-open loop, etc.
The valve seat 22 is slidably installed in the valve seat installation groove 12, and is limited in the valve seat installation groove 12 through the limit matching with the limit ring 21, a first extension boss 221 and a second extension boss 222 extend from the valve seat 22 towards two ends respectively, a first sealing ring 81 is arranged between the first extending boss 221 and the medium channel 11, a second sealing ring 82 is arranged between the valve seat 22 and the valve seat mounting groove 12, a third sealing ring 83 is arranged between the second extending boss 222 and the supporting seat 212, a fourth sealing ring 84 is arranged between the supporting seat 212 and the valve body 1, so that a first pressure chamber 6 with reliable sealing is formed between one end of the valve seat 22 and the valve body 1, the other end of the valve seat 22 forms a second pressure chamber 7 with reliable sealing with the stop ring 21, and a sealing surface matched with the gate plate 3 is formed at the end of the second extending boss 222.
A plurality of air pipelines 13 are further formed on the valve body 1, the air pipelines 13 are respectively communicated with the first pressure cavity 6 and the second pressure cavity 7, air can be fed into the first pressure cavity 6 or the second pressure cavity 7 through the air pipelines 13, when the valve is closed, the valve seat 22 can be pushed to tightly press the gate plate 3 under the action of air pressure by feeding air into the first pressure cavity 6, so that a good sealing effect is formed, in the opening and closing process of the valve, the valve seat 22 can be pushed to be separated from the gate plate 3 to keep a certain gap under the action of the air pressure, so that the gate plate 3 is not contacted with the valve seat 22 in the up-and-down sliding process, no friction exists between the valve and the valve, the problem of pulling damage of an operation sealing surface is avoided, and the service life is longer.
In addition, in order to realize the sealing between the valve rod 5 and the valve cap 4, a sealing packing assembly 9 is arranged between the upper end of the valve cap 4 and the valve rod 5, the sealing packing assembly 9 comprises a packing pad 91, a packing 92, a packing pressing sleeve 93 and a packing gland 94 which are sequentially arranged from bottom to top, the packing gland 94 is connected with the valve cap 4 through a bolt 95, a disc spring group 96 is sleeved outside the bolt 95, the disc spring group 96 is abutted against the packing gland 94, and the packing pressing sleeve 93, the packing 92 and the packing pad 91 are driven to be pressed by the packing gland 94.
The compression purpose is realized by the elastic force of the disc spring group 96, the pressure can be automatically adjusted, the constant and optimal sealing pressure is kept to act on the filler, the leakage caused by aging, compaction or thermal cycle can be prevented, frequent manual adjustment is not needed, the maintenance is reduced, and the optimal leakage control is kept by the minimum external force.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
The skilled person should understand that: although the present invention has been described in accordance with the above embodiments, the inventive concept is not limited to this embodiment, and any modification of the inventive concept will be included in the scope of the patent claims.
Claims (4)
1. An airtight single-gate valve comprises a valve body (1), valve seat assemblies (2), gates (3), a valve cover (4) and a valve rod (5), wherein a medium channel (11) for medium circulation is formed in the valve body (1), the valve seat assemblies (2) are arranged in the medium channel (11) of the valve body, the gates (3) are arranged between the two groups of valve seat assemblies (2) and can be in sealing fit with the valve seat assemblies (2), the valve cover (4) is fixedly arranged at the upper end of the valve body (1), one end of the valve rod (5) is connected with the gates (3), and the other end of the valve rod (5) extends out of the valve cover and is connected with an operation actuator;
the method is characterized in that: the valve seat assembly (2) comprises a limiting ring (21) and a valve seat (22), a valve seat mounting groove (12) is formed in the inner wall of the medium channel (11), one end, close to the flashboard (3), of the valve seat mounting groove (12) is mounted on the limiting ring (21), the valve seat (22) is slidably mounted in the valve seat mounting groove (12) and is in limit fit with the limiting ring (21), a first pressure cavity (6) is formed between one end of the valve seat (22) and the valve body (1), a second pressure cavity (7) is formed between the other end of the valve seat (22) and the limiting ring (21), a plurality of air pipelines (13) are further formed on the valve body (1), and the air pipelines (13) are respectively communicated with the first pressure cavity (6) or the second pressure cavity (7).
2. The hermetically sealed single gate disc gate valve according to claim 1, wherein: the limiting ring (21) comprises three open rings (211) and a supporting seat (212), a limiting groove (14) is formed in the inner wall of the medium channel (11), and the three open rings are arranged in the limiting groove (14) and connected with the supporting seat into a whole through bolts.
3. The hermetically sealed single gate disc gate valve according to claim 2, wherein: the sealing structure is characterized in that a first extending boss (221) and a second extending boss (222) extend out of the valve seat (22) towards two ends respectively, a first sealing ring (81) is arranged between the first extending boss (221) and the medium channel (11), a second sealing ring (82) is arranged between the valve seat (22) and the valve seat mounting groove (12), a third sealing ring (83) is arranged between the second extending boss (222) and the supporting seat (212), a fourth sealing ring (84) is arranged between the supporting seat (212) and the valve body (1), and a sealing surface matched with the flashboard (3) is formed at the end part of the second extending boss (222).
4. The hermetically sealed single gate disc gate valve according to claim 1, wherein: be equipped with between valve gap (4) upper end and valve rod (5) sealed packing subassembly (9), sealed packing subassembly (9) are including from supreme packing pad (91), packing (92), packing pressure cover (93), the gland (94) that set gradually down, gland (94) pass through bolt (95) with valve gap (4) and are connected, bolt (95) overcoat is equipped with dish spring group (96), dish spring group (96) and gland (94) butt order about gland (94) and compress tightly packing pressure cover (93), packing (92) and packing pad (91).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123092851.8U CN216479020U (en) | 2021-12-10 | 2021-12-10 | Airtight single-gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123092851.8U CN216479020U (en) | 2021-12-10 | 2021-12-10 | Airtight single-gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216479020U true CN216479020U (en) | 2022-05-10 |
Family
ID=81422046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123092851.8U Active CN216479020U (en) | 2021-12-10 | 2021-12-10 | Airtight single-gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216479020U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117570217A (en) * | 2024-01-17 | 2024-02-20 | 哈电集团哈尔滨电站阀门有限公司 | Double-channel parallel double-flashboard gate valve |
-
2021
- 2021-12-10 CN CN202123092851.8U patent/CN216479020U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117570217A (en) * | 2024-01-17 | 2024-02-20 | 哈电集团哈尔滨电站阀门有限公司 | Double-channel parallel double-flashboard gate valve |
| CN117570217B (en) * | 2024-01-17 | 2024-04-05 | 哈电集团哈尔滨电站阀门有限公司 | Double-channel parallel double-flashboard gate valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Air-sealed single ram gate valve Effective date of registration: 20230117 Granted publication date: 20220510 Pledgee: Zhejiang Ruian Rural Commercial Bank Co.,Ltd. Plaza Science and Technology Branch Pledgor: ZHEJIANG LIANDA VALVE Co.,Ltd. Registration number: Y2023110000030 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20220510 Pledgee: Zhejiang Ruian Rural Commercial Bank Co.,Ltd. Plaza Science and Technology Branch Pledgor: ZHEJIANG LIANDA VALVE Co.,Ltd. Registration number: Y2023110000030 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |