CN212055918U - Composite sealing high-temperature flat gate valve - Google Patents
Composite sealing high-temperature flat gate valve Download PDFInfo
- Publication number
- CN212055918U CN212055918U CN202020365297.2U CN202020365297U CN212055918U CN 212055918 U CN212055918 U CN 212055918U CN 202020365297 U CN202020365297 U CN 202020365297U CN 212055918 U CN212055918 U CN 212055918U
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- Prior art keywords
- valve
- valve seat
- seat
- grease injection
- sealing
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- 238000007789 sealing Methods 0.000 title claims abstract description 82
- 239000002131 composite material Substances 0.000 title abstract description 6
- 239000004519 grease Substances 0.000 claims abstract description 41
- 238000002347 injection Methods 0.000 claims abstract description 40
- 239000007924 injection Substances 0.000 claims abstract description 40
- 239000000945 filler Substances 0.000 claims abstract description 5
- 238000012856 packing Methods 0.000 claims description 22
- 239000010439 graphite Substances 0.000 claims description 6
- 229910002804 graphite Inorganic materials 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims 1
- 239000012530 fluid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010425 asbestos Substances 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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Abstract
The utility model discloses a composite sealing high-temperature flat gate valve, which comprises a valve seat, wherein a spring seat is arranged between the valve seat and a valve body, and the non-sealing end of the valve seat penetrates through the spring seat; a grease injection groove is formed in the sealing surface of the valve seat along the circumferential direction, the sealing surface is divided into a sealing surface A and a sealing surface B by the grease injection groove, the grease injection groove is communicated with a grease injection hole, the grease injection hole extends to the outside of the valve seat, and a spring A is arranged between the valve seat and the valve body; a spring B is arranged between the spring seat and the valve body, and a filler is arranged between the spring seat and the valve seat. The utility model discloses can be applicable to high temperature environment, keep sealed under the low pressure, be applicable to different pressurized states.
Description
Technical Field
The utility model relates to a valve equipment field especially relates to a composite seal high temperature plate valve.
Background
In the prior art, a gate valve is used as a stop valve of a large-diameter pipeline, an opening and closing piece of the gate valve is a gate plate, the movement direction of the gate plate is perpendicular to the fluid direction, when the gate valve is closed, a sealing surface can be sealed only by medium pressure, namely, the sealing surface of the gate plate is pressed to a valve seat on the other side by the medium pressure to ensure the sealing of the sealing surface, and self sealing is formed.
The conventional normal-temperature flat gate valve is mainly used in normal-temperature fluid, adopts sealing elements such as a plastic valve seat, an O-shaped ring and the like, and is difficult to adapt to a high-temperature working environment; meanwhile, the O-shaped ring is extruded for a long time, the elasticity is attenuated, the valve is difficult to seal at low pressure for a long time, and low-pressure internal leakage is easy to occur; the plastic sealing ring is not wear-resistant, and the sealing surface is easy to damage and leak.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a composite seal high temperature plate valve can be applicable to high temperature environment, keeps sealed under the low pressure, is applicable to different pressurized states.
In order to achieve the purpose, the utility model adopts the following technical proposal to realize:
the utility model discloses a composite sealing high-temperature flat gate valve, which comprises a valve seat, wherein a spring seat is arranged between the valve seat and a valve body, and the non-sealing end of the valve seat penetrates through the spring seat;
a grease injection groove is formed in the sealing surface of the valve seat along the circumferential direction, the sealing surface is divided into a sealing surface A and a sealing surface B by the grease injection groove, the grease injection groove is communicated with a grease injection hole, the grease injection hole extends to the outside of the valve seat, and a spring A is arranged between the valve seat and the valve body;
a spring B is arranged between the spring seat and the valve body, and a filler is arranged between the spring seat and the valve seat.
Preferably, the valve body is provided with a grease injection valve which is communicated with the grease injection hole.
Preferably, the outer diameters of the spring seat, the valve seat and the packing are the same.
Preferably, the section of the packing is right-angled triangle, and the surface of the corresponding inclined edge of the packing is attached to the valve seat.
Preferably, the sealing surface A and the sealing surface B are both hard alloy layers compounded on the surface of the valve seat, and the sealing surface A and the sealing surface B are both of smooth structures.
Preferably, a sealing gasket is arranged between the non-sealing valve seat and the valve body.
Preferably, the periphery of the valve seat is provided with a graphite packing.
Preferably, the non-sealing end of the valve seat is matched with the spring seat through a clip structure.
Preferably, the grease injection hole is formed in the periphery of the valve seat and communicated with the bottom surface of the grease injection groove.
Preferably, the sealing gasket is made of high-temperature resistant materials.
The utility model has the advantages that:
1. all sealing materials such as graphite packing, stuffing, sealing gasket and the like used by the utility model are high temperature resistant materials, can be used under the high temperature condition, the highest using temperature is up to 400 ℃, and triple sealing can be realized at high temperature;
2. the sealing surface of the valve seat in the utility model is made of hard alloy, and the valve seat and the flashboard form hard sealing by strictly controlling roughness, thereby realizing sealing at high temperature;
3. the middle valve seat and the flashboard realize triple sealing, namely a valve seat sealing surface A and a valve seat sealing surface B, and a sealing ring is realized by injecting sealing grease through the grease injection hole;
4. the sealing surface of the valve seat and the sealing surface of the valve body can realize different combinations of different compression states;
5. the pretightening force of the sealing surface of the valve seat in the utility model is provided by the spring A and the spring B together, and even if the size of the filler is changed, enough force is provided to ensure low-pressure sealing;
6. the packing in the utility model is protected in the space formed by the valve seat and the spring seat, the packing pressure can not be invalid due to the increase of the valve seat force, and the space only receives the acting force given by the spring seat;
7. the packing in the utility model is special-shaped packing, which has self-tightening function and reliable sealing;
8. the utility model discloses can realize urgent sealed function through pouring into sealed fat.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a cross-sectional view of a valve seat structure.
In the figure: 1-valve seat, 2-valve body, 3-spring seat, 4-sealing gasket, 5-graphite packing, 6-grease injection groove, 7-grease injection hole, 8-grease injection valve, 9-sealing surface A, 10-sealing surface B, 11-spring A, 12-spring B, 13-filler and 14-flashboard.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings.
As shown in fig. 1 and 2, the utility model comprises a valve seat 1, a spring seat 3 is arranged between the valve seat 1 and a valve body 2, the non-sealing end of the valve seat 1 penetrates through the spring seat 3, a sealing gasket 4 is arranged between the non-sealing end of the valve seat 1 and the valve body 2, the sealing gasket 4 is made of high temperature resistant material, such as asbestos, etc., a graphite packing 5 is arranged on the periphery of the valve seat 1, and the non-sealing end of the valve seat 1 is matched with the spring seat 3 through a clip structure;
the sealing surface of the valve seat 1 is circumferentially provided with a grease injection groove 6, the grease injection groove 6 divides the sealing surface into a sealing surface A9 and a sealing surface B10, the sealing surface A9 is positioned on the outer side of a sealing surface B10, the grease injection groove 6 is communicated with a grease injection hole 7, the grease injection hole 7 extends to the outside of the valve seat 1, a spring A11 is arranged between the valve seat 1 and the valve body 2, the grease injection hole 7 is arranged on the periphery of the valve seat 1, the grease injection hole 7 is communicated with the bottom surface of the grease injection groove 6, a plurality of springs A11 are circumferentially arranged at equal intervals, and the valve seat 1 is provided with a blind;
be equipped with spring B12 between spring holder 3 and the valve body 2, a plurality of springs B12 set up along circumference equidistant, and spring holder 3 is equipped with the blind hole that holds spring B12, is equipped with packing 13 between spring holder 3 and the valve seat 1.
The valve body 2 is provided with a grease injection valve 8, and the grease injection valve 8 is communicated with a grease injection hole 7.
The outer diameters of the spring seat 3, the valve seat 1 and the packing 13 are the same, the section of the packing 13 is a right triangle, and the surface of the inclined edge corresponding to the packing 13 is attached to the valve seat 1.
The sealing surface A9 and the sealing surface B10 are both hard alloy layers compounded on the surface of the valve seat 1, and the sealing surface A9 and the sealing surface B10 are both smooth structures.
When the utility model is used in practice,
when the valve seat 1 is upstream, i.e. the pressure direction is from the valve seat 1 to the shutter plate 14,
the sealing surface A9 of the valve seat 1 is tightly attached to the flashboard 14 and is sealed at present, the packing 13 is tightly attached to the valve body 2 by the spring force of the spring seat 3 to form a seal, and meanwhile, the graphite packing 5 is also sealed with the valve body 2;
when the valve seat 1 is downstream, i.e. the pressure direction is the direction of the shutter 14 towards the valve seat 1,
due to the action of the spring force, the sealing surface B10 of the valve seat 1 is tightly attached to the gate plate 14 to form sealing, meanwhile, the packing 13 is attached to the valve body 2 to form sealing after the action of the spring force, and meanwhile, the sealing gasket 4 is attached to the valve body 2 to form sealing.
Of course, the present invention may have other embodiments, and those skilled in the art may make various corresponding changes and modifications according to the present invention without departing from the spirit and the essence of the present invention, and these corresponding changes and modifications should fall within the protection scope of the appended claims.
Claims (10)
1. The utility model provides a compound seal high temperature plate valve which characterized in that: the valve seat comprises a valve seat (1), a spring seat (3) is arranged between the valve seat (1) and a valve body (2), and the non-sealing end of the valve seat (1) penetrates through the spring seat (3);
a grease injection groove (6) is formed in the circumferential direction of the sealing surface of the valve seat (1), the sealing surface is divided into a sealing surface A (9) and a sealing surface B (10) by the grease injection groove (6), the grease injection groove (6) is communicated with a grease injection hole (7), the grease injection hole (7) extends to the outside of the valve seat (1), and a spring A (11) is arranged between the valve seat (1) and the valve body (2);
a spring B (12) is arranged between the spring seat (3) and the valve body (2), and a filler (13) is arranged between the spring seat (3) and the valve seat (1).
2. The gate valve of claim 1, wherein: the valve body (2) is provided with a grease injection valve (8), and the grease injection valve (8) is communicated with a grease injection hole (7).
3. The gate valve of claim 1, wherein: the outer diameters of the spring seat (3), the valve seat (1) and the packing (13) are the same.
4. The gate valve of claim 3, wherein: the section of the packing (13) is a right triangle, and the surface of the corresponding hypotenuse of the packing (13) is attached to the valve seat (1).
5. The gate valve of claim 1, wherein: the sealing surface A (9) and the sealing surface B (10) are both hard alloy layers compounded on the surface of the valve seat (1), and the sealing surface A (9) and the sealing surface B (10) are both smooth structures.
6. The gate valve of claim 1, wherein: a sealing gasket (4) is arranged between the non-sealing valve seat (1) and the valve body (2).
7. The gate valve of claim 1, wherein: the periphery of the valve seat (1) is provided with a graphite packing (5).
8. The gate valve of claim 1, wherein: the non-sealing end of the valve seat (1) is matched with the spring seat (3) through a clip structure.
9. The gate valve of claim 1, wherein: the grease injection holes (7) are formed in the periphery of the valve seat (1), and the grease injection holes (7) are communicated with the bottom surface of the grease injection groove (6).
10. The gate valve of claim 6, wherein: the sealing gasket (4) is made of high-temperature resistant material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020365297.2U CN212055918U (en) | 2020-03-20 | 2020-03-20 | Composite sealing high-temperature flat gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020365297.2U CN212055918U (en) | 2020-03-20 | 2020-03-20 | Composite sealing high-temperature flat gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212055918U true CN212055918U (en) | 2020-12-01 |
Family
ID=73529187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020365297.2U Active CN212055918U (en) | 2020-03-20 | 2020-03-20 | Composite sealing high-temperature flat gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212055918U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111255906A (en) * | 2020-03-20 | 2020-06-09 | 成都乘风阀门有限责任公司 | Composite sealing high-temperature flat gate valve |
-
2020
- 2020-03-20 CN CN202020365297.2U patent/CN212055918U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111255906A (en) * | 2020-03-20 | 2020-06-09 | 成都乘风阀门有限责任公司 | Composite sealing high-temperature flat gate valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 611330 No. 6, Guanghua Road, Jinyuan Town, Dayi County, Chengdu, Sichuan Patentee after: CHENGDU CHENGFENG VALVE Co.,Ltd. Patentee after: Chengdu Chenggao Valve Co.,Ltd. Patentee after: Chengfeng FLOW-TECH Group Address before: 6 Guanghua Road, Jinyuan Town, Dayi County, Chengdu, Sichuan 610000 Patentee before: CHENGDU CHENGFENG VALVE Co.,Ltd. Patentee before: CHENGDU CHENG GAO VALVE Co.,Ltd. Patentee before: CHENGDU CHENGFENG FLOW-TECH GROUP Co.,Ltd. |
|
| CP03 | Change of name, title or address |