CN104373620B - A kind of sealing structure of knife gate valve - Google Patents
A kind of sealing structure of knife gate valve Download PDFInfo
- Publication number
- CN104373620B CN104373620B CN201410622195.3A CN201410622195A CN104373620B CN 104373620 B CN104373620 B CN 104373620B CN 201410622195 A CN201410622195 A CN 201410622195A CN 104373620 B CN104373620 B CN 104373620B
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- China
- Prior art keywords
- axle
- sealing strip
- rises
- sealing structure
- otch
- Prior art date
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- 238000007789 sealing Methods 0.000 title claims abstract description 52
- 238000009434 installation Methods 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 210000002421 cell wall Anatomy 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007363 ring formation reaction Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Abstract
The sealing structure of a kind of knife gate valve, this sealing structure includes rise axle, sealing strip, elastic cylindrical pin, push rod, screw；The described axle that rises has conical nose, and afterbody center is with otch, and the extend internally axle that makes to rise of this otch has cavity；Having groove on the left and right valve body of knife gate valve, this groove inner rim arranges sealing strip；Being inserted the conical nose of the axle that rises in the otch of the adjacent axle afterbody that rises during installation, these end to end some groups axle that rises forms internal forces driving-chain, and this internal forces driving-chain entirety loads in elastic cylindrical pin, and this elastic cylindrical pin is compressed by described sealing strip parcel；Push rod and the end thereof contacts of described internal forces driving-chain simultaneously, and the other end of this push rod contacts with screw.The present invention utilizes transmission and the expansion of open metal part of power, transfers force on the sealing strip that seals, makes sealing strip swell with valve body cell wall to contact to seal.Medium is made reliably to be blocked in cavity.
Description
Technical field
The invention belongs to technical field of valve manufacturing, be specifically related to a kind of sealing structure that can reliably seal on knife gate valve.
Background technology
General knife gate valve uses in media as well, and the rubber seal sealed can be corroded, abrasion, makes sealing function lose efficacy, leaks outside.Along with starting in a large number of petrochemical industry desulfuring and denitrifying apparatus, in the urgent need to a kind of sealing structure that can prevent valve leakage out of steam system, to improve the valve impact on environment.
Summary of the invention
The present invention provides a kind of can reliably use the sealing structure on knife gate valve.
The present invention adopts the technical scheme that:
The sealing structure of a kind of knife gate valve, this sealing structure is the sealing structure between valve body and flashboard, and described sealing structure is to transmit the adjustable sealing structure of sealing force.
The sealing structure of described knife gate valve includes rise axle, sealing strip, elastic cylindrical pin, push rod, screw；The described axle that rises has conical nose, and afterbody center is with otch, and the extend internally axle that makes to rise of this otch has cavity；Having groove on the left and right valve body of knife gate valve, this groove inner rim arranges sealing strip；Being inserted the conical nose of the axle that rises in the otch of the adjacent axle afterbody that rises during installation, these end to end some groups axle that rises forms internal forces driving-chain, and this internal forces driving-chain entirety loads in elastic cylindrical pin, and this elastic cylindrical pin is compressed by described sealing strip parcel；Push rod and the end thereof contacts of described internal forces driving-chain simultaneously, and the other end of this push rod contacts with screw.
The present invention utilizes transmission and the expansion of open metal part of power, transfers force on the sealing strip that seals, makes sealing strip swell with valve body cell wall to contact to seal.Medium is made reliably to be blocked in cavity.This can transmit the sealing structure of strength, compares general sealing structure, and for i.e. being sealed by groove simply by a root rubber expansion, the power of transmission can be passed to seal on sealing strip by elastic cylindrical pin by this structure equably.Sealing force is the most reliable.
Accompanying drawing explanation
Fig. 1 a is the overall structure schematic diagram of knife gate valve of the present invention；
Fig. 1 b is the sectional view of Fig. 1 a；
Fig. 2 is the structural representation of the present invention；
Fig. 3 is the annular seal space schematic diagram of the sealing ring formation at the present invention and two ends.
Detailed description of the invention
The present invention is described in detail with detailed description of the invention below in conjunction with the accompanying drawings.
The sealing structure of a kind of knife gate valve, this sealing structure is the sealing structure between valve body and flashboard, and described sealing structure is to transmit the adjustable sealing structure of sealing force.Specific as follows:
With reference to Fig. 1 a, 1b, Fig. 2, the sealing structure of a kind of knife gate valve, it includes rise axle 5, sealing strip 3, elastic (opening) straight pin 4, push rod 7, screw 8；The described axle 5(that rises is made up of metal material, such as stainless steel 304 etc.) there is conical nose 6, afterbody center is with otch 9, and the extend internally axle 5 that makes to rise of this otch 9 has cavity 10；Having groove on the left and right valve body of knife gate valve 1,2, this groove inner rim arranges sealing strip 3；Being inserted the conical nose of the axle 5 that rises in the otch of the adjacent axle afterbody that rises during installation, these end to end some groups axle that rises forms internal forces driving-chain, and this internal forces driving-chain is integrally placed in elastic cylindrical pin 4, and this elastic cylindrical pin 4 is wrapped up compression by described sealing strip 3；Push rod 7 and described internal forces driving-chain end thereof contacts simultaneously, and the other end of this push rod 7 contacts with screw 8.When screw 8 precession promotes push rod 7 to advance, and the axle conical nose that rises transmits the force to the axle that rises, and rise axle spreading.Strut elasticity (opening) straight pin, peripheral sealing strip is squeezed on cell wall, formed and seal.
At the two ends of sealing structure of the present invention, see that Fig. 3 has the U-shaped sealing strip of rubber 11 to press and defines a chamber sealed on this structure, prevent medium from leaking outside further.
The present invention well prevent leaking outside of medium from structure design aspect.
Above-described is only the preferred embodiment of the present invention.Should be understood that for the those of ordinary skill of valve technology field, under the technology enlightenment that patent of the present invention is provided, it is also possible to make other equivalent modifications and improvement, also should be regarded as the protection domain of patent of the present invention.
Claims (1)
1. a sealing structure for knife gate valve, this sealing structure is the sealing structure between valve body and flashboard, it is characterised in that: described sealing structure is for can transmit sealing force
Adjustable sealing structure；It includes rise axle (5), sealing strip (3), elastic cylindrical pin (4), push rod (7), screw (8)；The described axle that rises (5) has conical nose (6), and afterbody center is with otch (9), and the extend internally axle (5) that makes to rise of this otch (9) has cavity (10)；The left and right valve body of knife gate valve has groove on (1,2), and this groove inner rim arranges sealing strip (3)；During installation, the conical nose (6) of the axle that rises (5) is inserted in the otch of the adjacent axle afterbody that rises, these end to end some groups rise axle formed internal forces driving-chain, this internal forces driving-chain entirety loads in elastic cylindrical pin (4), and this elastic cylindrical pin (4) is compressed by described sealing strip (3)；Push rod (7) and the end thereof contacts of described internal forces driving-chain simultaneously, and the other end of this push rod (7) contacts with screw (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410622195.3A CN104373620B (en) | 2014-11-07 | A kind of sealing structure of knife gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410622195.3A CN104373620B (en) | 2014-11-07 | A kind of sealing structure of knife gate valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104373620A CN104373620A (en) | 2015-02-25 |
| CN104373620B true CN104373620B (en) | 2017-01-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Sealing structure of sluice valve Effective date of registration: 20170714 Granted publication date: 20170104 Pledgee: Lanzhou rural commercial bank Limited by Share Ltd. Xigu branch Pledgor: LANZHOU HIGH PRESSURE VALVE Co.,Ltd. Registration number: 2017620000017 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20220309 Granted publication date: 20170104 Pledgee: Lanzhou rural commercial bank Limited by Share Ltd. Xigu branch Pledgor: LANZHOU HIGH PRESSURE VALVE Co.,Ltd. Registration number: 2017620000017 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Sealing structure of knife gate valve Effective date of registration: 20220315 Granted publication date: 20170104 Pledgee: China Construction Bank Corporation Lanzhou Xigu sub branch Pledgor: LANZHOU HIGH PRESSURE VALVE Co.,Ltd. Registration number: Y2022620000005 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20170104 Pledgee: China Construction Bank Corporation Lanzhou Xigu sub branch Pledgor: LANZHOU HIGH PRESSURE VALVE Co.,Ltd. Registration number: Y2022620000005 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A Sealing Structure of Knife Gate Valve Granted publication date: 20170104 Pledgee: Lanzhou rural commercial bank Limited by Share Ltd. Xigu branch Pledgor: LANZHOU HIGH PRESSURE VALVE Co.,Ltd. Registration number: Y2024620000001 |