CN203453505U - Bidirectional sealing knife gate valve - Google Patents
Bidirectional sealing knife gate valve Download PDFInfo
- Publication number
- CN203453505U CN203453505U CN201320472554.2U CN201320472554U CN203453505U CN 203453505 U CN203453505 U CN 203453505U CN 201320472554 U CN201320472554 U CN 201320472554U CN 203453505 U CN203453505 U CN 203453505U
- Authority
- CN
- China
- Prior art keywords
- valve
- flashboard
- valve rod
- seal ring
- rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000007789 sealing Methods 0.000 title abstract description 6
- 230000002457 bidirectional effect Effects 0.000 title abstract 4
- 230000000630 rising effect Effects 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Lift Valve (AREA)
Abstract
The utility model belongs to the field of valves, and particularly relates to a bidirectional sealing knife gate valve. A valve hood is located on the upper portion of a valve body, a valve rod is arranged in a middle cavity of the valve hood, a gate plate is arranged on the lower portion of the valve rod, a seal ring A is arranged between the gate valve and the valve body, the seal ring A is located on one side of a valve port A of the gate plate, a movable elastic seal sleeve is located on one side of a valve port B of the gate plate, and a starting device is connected with the upper end of the valve rod. The bidirectional sealing knife gate valve is characterized by further comprising a valve rod nut, wherein a seal ring B is arranged between the gate plate and the movable elastic seal sleeve, the seal ring B is located on one side of the valve port B of the gate plate, the gate plate is connected with the valve rod through the valve rod nut, the starting device controls the gate plate to float vertically along the valve rod, and the valve rod is a non-rising rod. The bidirectional sealing knife gate valve achieves double-surface sealing, undergoes pressure in double directions, and is small in size and high in automatic degree.
Description
Technical field
The utility model belongs to valve field, relates in particular to a kind of knife gate valve.
Background technique
Knife gate valve be in transportation pipeline for controlling the parts of fluid, it generally comprises valve body, valve gap, valve rod, flashboard, mostly is and is fixedly connected with and drives flashboard to rotate by valve rod, thereby realize the opening and closing of knife gate valve between valve rod and flashboard.At present, the valve body lower portion of knife gate valve is provided with two valve ports, and between flashboard one side and valve body, is provided with a seal ring, and the opposite side of valve plate is provided with movable elastic seal cartridge and movable elastic seal cartridge is fixed on valve body by screw.When fluid is when the valve port of contiguous movable elastic seal cartridge flows into valve body, thereby flashboard and seal ring fit tightly and play good seal action; When fluid is from the valve port inflow valve body of contiguous seal ring, thereby flashboard and seal ring cannot fit tightly and can not play good seal action, therefore the flashboard of knife gate valve can only reach the effect of one side sealing, unidirectional pressurized, and flashboard can not bear the pressure of counter fluid.The valve rod of knife gate valve is that rising stem (RS.) and valve rod are long in addition, thereby causes knife gate valve higher, and volume ratio is larger, when it is installed in pipeline, need to take larger space.
Summary of the invention
In order to solve the problems of the technologies described above, the utility model provides a kind of two way sealed knife gate valve, comprise valve body, flashboard, valve gap, movable elastic seal cartridge and starting drive, the bottom of described valve body is provided with valve port A and valve port B, top and described valve gap lumen that described valve gap is positioned at described valve body are provided with valve rod, the below of described valve rod is provided with flashboard, between described flashboard and described valve body, be provided with valve port A mono-side that seal ring A and described seal ring A are positioned at described flashboard, valve port B mono-side and described movable elastic seal cartridge that described movable elastic seal cartridge is positioned at described flashboard are fixed on described valve body by screw, described starting drive is connected with the upper end of described valve rod, it is characterized in that: also comprise Stem Mut, between described flashboard and described movable elastic seal cartridge, be provided with valve port B mono-side that seal ring B and described seal ring B are positioned at described flashboard, between described flashboard and described valve rod, by described Stem Mut, be connected and described flashboard fluctuates along described valve rod under the control of described starting drive, described valve rod is dark bar.
Described starting drive is electric starting device, pneumatic starting drive or wherein a kind of of starting drive of surging.
The beneficial effects of the utility model are: the utility model is provided with seal ring B between flashboard and movable elastic seal cartridge, seal ring B and seal ring A are arranged at respectively the both sides of flashboard, fluid can flow along both direction in valve body, flashboard can be accepted respectively the pressure from valve port A and valve port B both direction, thereby reaches the effect of dual face seals, bi-directional compression; Flashboard fluctuates and valve rod is set to dark bar along valve rod under the control of starting drive, effectively shortens the length of valve rod, and knife gate valve is shorter, and volume is smaller, when it is installed in pipeline, only need take smaller space; Be applicable to the fluids such as gas, liquid, mud; The upper end of valve rod can configure the starting drive of any type, and starting drive can be connected with computer, and automaticity is high.The utility model provides a kind of dual face seals, bi-directional compression, volume is smaller, automaticity is high two way sealed knife gate valve.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the local enlarged diagram of valve body upper end in the utility model;
Fig. 3 is the local enlarged diagram of valve body lower end in the utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
In figure, 1-valve body, 2-valve gap, the movable elastic seal cartridge of 3-, 4-valve port A, 5-valve port B, 6-valve rod, 7-flashboard, 8-seal ring A, 9-screw, 10-seal ring B, 11-Stem Mut, 12-starting drive, A-valve body upper end, B-valve body lower end.
Embodiment
As Figure 1-3, the bottom of valve body 1 is provided with valve port A4 and valve port B5, top and valve gap 2 lumens that valve gap 2 is positioned at valve body 1 are provided with valve rod 6, the upper end of valve rod 6 is connected with starting drive 12, the below of valve rod 6 is provided with flashboard 7, between flashboard 7 and valve body 1, be provided with valve port A4 mono-side that seal ring A8 and seal ring A8 are positioned at flashboard 7, between flashboard 7 and valve rod 6, by Stem Mut 11, be connected and flashboard 7 can fluctuate along valve rod 6 under the control of starting drive 12, valve rod 6 is dark bar, valve port B5 mono-side and movable elastic seal cartridge 3 that movable elastic seal cartridge 3 is positioned at flashboard 7 are fixed on valve body 1 by screw 9, between movable elastic seal cartridge 3 and flashboard 7, be provided with valve port B5 mono-side that seal ring B10 and seal ring B10 are positioned at flashboard 7, starting drive 12 is electric starting device, pneumatic starting drive or wherein a kind of of starting drive of surging.
Working principle
As Figure 1-3, when flashboard 7 cuts out, when fluid flows into from valve port A4, fluid produces certain pressure to flashboard 7 fits tightly flashboard 7 and seal ring B10, thereby plays good seal action; When flashboard 7 cuts out, when fluid flows into from valve port B5, fluid produces certain pressure to flashboard 7 fits tightly flashboard 7 and seal ring A8, thereby plays good seal action; When transporting fluid, under the control of starting drive 12, flashboard 7 upwards floats along valve rod 6, thereby valve port A4 and valve port B5 are connected, thereby plays the effect of transporting fluid.
Above an embodiment of the present utility model is had been described in detail, but described content is only preferred embodiment of the present utility model, can not be considered to for limiting practical range of the present utility model.All equalization variations of doing according to the utility model application range and improvement etc., within all should still belonging to patent covering scope of the present utility model.
Claims (2)
1. a two way sealed knife gate valve, comprise valve body (1), flashboard (7), valve gap (2), movable elastic seal cartridge (3) and starting drive (12), the bottom of described valve body (1) is provided with valve port A(4) and valve port B(5), top and described valve gap (2) lumen that described valve gap (2) is positioned at described valve body (1) are provided with valve rod (6), the below of described valve rod (6) is provided with flashboard (7), between described flashboard (7) and described valve body (1), be provided with seal ring A(8) and described seal ring A(8) be positioned at the valve port A(4 of described flashboard (7)) side, described movable elastic seal cartridge (3) is positioned at the valve port B(5 of described flashboard (7)) side and described movable elastic seal cartridge (3) be fixed on described valve body (1) by screw (9), described starting drive (12) is connected with the upper end of described valve rod (6), it is characterized in that: also comprise Stem Mut (11), between described flashboard (7) and described movable elastic seal cartridge (3), be provided with seal ring B(10) and described seal ring B(10) be positioned at the valve port B(5 of described flashboard (7)) side, between described flashboard (7) and described valve rod (6), by described Stem Mut (11), be connected and described flashboard (7) can fluctuate along described valve rod (6) under the control of described starting drive (12), described valve rod (6) is dark bar.
2. a kind of two way sealed knife gate valve according to claim 1, is characterized in that: described starting drive (12) is electric starting device, pneumatic starting drive or wherein a kind of of starting drive of surging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320472554.2U CN203453505U (en) | 2013-08-01 | 2013-08-01 | Bidirectional sealing knife gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320472554.2U CN203453505U (en) | 2013-08-01 | 2013-08-01 | Bidirectional sealing knife gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203453505U true CN203453505U (en) | 2014-02-26 |
Family
ID=50133381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320472554.2U Expired - Lifetime CN203453505U (en) | 2013-08-01 | 2013-08-01 | Bidirectional sealing knife gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203453505U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022193417A1 (en) | 2021-03-18 | 2022-09-22 | 大连康维科技有限公司 | Valve |
-
2013
- 2013-08-01 CN CN201320472554.2U patent/CN203453505U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022193417A1 (en) | 2021-03-18 | 2022-09-22 | 大连康维科技有限公司 | Valve |
| US12270482B2 (en) | 2021-03-18 | 2025-04-08 | Dalian Conservation Science &Technology Co., Ltd. | Valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140226 |
|
| CX01 | Expiry of patent term |