CN101949456A - Expansion flat gate valve - Google Patents
Expansion flat gate valve Download PDFInfo
- Publication number
- CN101949456A CN101949456A CN 201010286690 CN201010286690A CN101949456A CN 101949456 A CN101949456 A CN 101949456A CN 201010286690 CN201010286690 CN 201010286690 CN 201010286690 A CN201010286690 A CN 201010286690A CN 101949456 A CN101949456 A CN 101949456A
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- Prior art keywords
- valve
- flashboard
- gate
- main gate
- board
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Abstract
The invention relates to an expansion flat gate valve which comprises a valve body, valve seats, a valve rod and gates, wherein the gates comprise a main gate and a slave gate; the upper end of the main gate is fixedly connected with the valve rod; a V-shaped matching inclined plane is arranged between the contact surfaces of the main gate and the slave gate; a lever lock mechanism is arranged on the side planes of the main gate and the slave gate; and guide plates are symmetrically installed on the outer walls of the two valve seats on the left and right of the valve body. When the valve is in a fully closed or fully open state, the gates and the valve seats are in the hermetic matching state, and a middle cavity of the valve body is isolated from the medium pressure of a passage, thereby improving the sealing property of the valve cap and the valve rod communicated with the middle cavity of the valve body and preventing leakage. In the process of opening and closing the valve, the gates and the valve seats are in a disengaged state all the time, thereby reducing the friction of a sealing pair, and having the advantages of small wear, good sealing property and the like. The expansion flat gate valve is especially suitable for a flat gate valve of a large-diameter pipeline.
Description
Technical field
The invention belongs to valve type, particularly a kind of wedge shape expansion plate valve.
Background technique
The structure of plate wedge gate valve comprises valve body, valve rod, left and right sides flashboard, wedge block.As the patent No. is the extruding/shrinking type plate valve of ZL99246370.X, and its flashboard adopts extruding/shrinking type double-flashboard structure, and the splayed shape inclined-plane is made in two flashboard stage casings, and wedge-shaped blocks is set in the middle of the inclined-plane.When opening, promote wedge-shaped blocks earlier, promote again after making left and right sides flashboard break away from valve seat; When closing, strut again and valve base sealing after left and right sides flashboard moves into place earlier, can reduce the wearing and tearing of sealing pair.Its shortcoming is: at valve opening state, for non-tight cooperates, the passage medium is full of whole valve pocket between flashboard and the valve seat, and the valve pocket medium can not be released when valve opening state, and is heavy to valve bonnet seal circle and valve stem seal pressure-bearing, easily leaks outside.
Summary of the invention
The objective of the invention is shortcoming at the prior art existence, provide a kind of and all keep the state of being sealed and matched at valve opening and closed condition lower flashboard and valve seat, and the valve body lumen medium of can releasing, the sealing pair wearing and tearing are little, the expansion plate valve of good seal performance.
Technological scheme of the present invention comprises valve body, valve seat, valve rod and flashboard, mainly be that flashboard is formed by main gate-board with from flashboard, fixedly connected with valve rod in the main gate-board upper end, main gate-board and cooperate the inclined-plane from having V-arrangement between the flashboard surface of contact, be provided with lever lock mechanism at main gate-board with from the side plane of flashboard, described lever lock mechanism is made up of lever arm and centering block, centering block is fixedly connected on the underpart of lever arm by connecting pin, the upper end portion of lever arm is shaped on a left side, right two locating slots, a left side, right two locating slots are movably arranged on main gate-board by bearing pin respectively and from flashboard, two valve seat outer wall symmetries are installed guide plate about valve body.
The present invention's beneficial effect compared with prior art is all to be in the state of being sealed and matched between valve complete shut-down or full-gear lower flashboard and valve seat, with valve body lumen and channel media pressure isolation, the valve body lumen pressure of releasing, improve the valve gap and the valve rod place sealability that are connected with the valve body lumen, prevent to leak outside.And in the valve opening and closing process, be in disengaged position between flashboard and the valve seat all the time, reduced the friction of sealing pair.Have advantages such as wearing and tearing are little, good seal performance.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
Expansion plate valve as shown in Figure 1, comprise valve body 1, valve seat 2, valve rod 7 and flashboard, flashboard is formed by main gate-board 5 with from flashboard 6, fixedly connected with valve rod 7 lower ends in main gate-board 5 upper ends, main gate-board 5 and cooperate the inclined-plane from having V-arrangement between flashboard 6 surface of contact is provided with lever lock mechanism at main gate-board 5 with from the side plane of flashboard 6.Described lever lock mechanism is made up of lever arm 4 and centering block 10, centering block 10 is fixedly connected on the underpart of lever arm 4 by connecting pin 9, the upper end portion of lever arm 4 is shaped on left and right two locating slots, left and right two locating slots are movably arranged on main gate-board 5 by bearing pin 8 respectively and from flashboard 6, wherein left locating slot by bearing pin 8 activity orientation on main gate-board 5, right locating slot from flashboard 6, can rotate lever arm 4 by bearing pin 8 activity orientation on bearing pin 8.Two valve seat 2 outer walls symmetries are installed guide plate 3 about valve body 1, and in the valve opening and closing process, centering block 10 is between the left and right sides guide plate 3, and restriction lever arm 4 rotates on bearing pin 8, and main gate-board 5 is driven from flashboard 6 elevating movement together by lever arm 4.Close when putting in place at flashboard, limited from flashboard 6, stop to move down, be positioned at from 3 pairs of centering blocks of guide plate 10 of flashboard 6 one sides and remove guiding and position-limiting action, when main gate-board 5 continues to move down, centering block 10 will be to rotating from flashboard 6 one sides, and motionless from flashboard 6, main gate-board 5 with strut both from the inclined-plane, upper end between the flashboard 6 and valve seat 2 wedgings seal.When the flashboard unlatching puts in place, limited from flashboard 6, move on stopping to continue, when main gate-board 5 continues to move up, centering block 10 breaks away from the restriction of guide plates 3 and rotates to main gate-board 5 one sides, main gate-board 5 with strut both from the inclined-plane, lower end between the flashboard 6 and valve seat 2 wedgings seal.
Claims (1)
1. expansion plate valve, comprise valve body (1), valve seat (2), valve rod (7) and flashboard, it is characterized in that flashboard forms by main gate-board (5) with from flashboard (6), fixedly connected with valve rod (7) in main gate-board (5) upper end, main gate-board (5) and cooperate the inclined-plane from having V-arrangement between flashboard (6) surface of contact, be provided with lever lock mechanism at main gate-board (5) with from the side plane of flashboard (6), described lever lock mechanism is made up of lever arm (4) and centering block (10), centering block (10) is fixedly connected on the underpart of lever arm (4) by connecting pin (9), the upper end portion of lever arm (4) is shaped on a left side, right two locating slots, a left side, right two locating slots are movably arranged on main gate-board (5) by bearing pin (8) respectively and from flashboard (6), two valve seats (2) outer wall symmetry is installed guide plate (3) about valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010286690 CN101949456A (en) | 2010-09-20 | 2010-09-20 | Expansion flat gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010286690 CN101949456A (en) | 2010-09-20 | 2010-09-20 | Expansion flat gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101949456A true CN101949456A (en) | 2011-01-19 |
Family
ID=43453047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010286690 Pending CN101949456A (en) | 2010-09-20 | 2010-09-20 | Expansion flat gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101949456A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103917811A (en) * | 2011-09-30 | 2014-07-09 | 集成设备有限公司 | Expanding gate valve assembly |
| CN105333165A (en) * | 2014-08-15 | 2016-02-17 | 德维阀门铸造（苏州）有限公司 | Expansion gate valve |
| CN105351604A (en) * | 2015-11-27 | 2016-02-24 | 四川九天真空科技股份有限公司 | Opening structure and opening method of valve under large pressure difference |
| CN106641298A (en) * | 2015-10-29 | 2017-05-10 | 德维阀门铸造（苏州）有限公司 | Compact type expansion gate valve |
| CN106763855A (en) * | 2017-01-16 | 2017-05-31 | 福建省利邦环境工程有限公司 | Heavy caliber air-valve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5657961A (en) * | 1995-04-18 | 1997-08-19 | Kalsi Engineering, Inc. | Flexible wedge gate valve |
| CN2349409Y (en) * | 1998-10-19 | 1999-11-17 | 江苏省国营淮海石油机械厂 | Internal wedged parallel type double gate boards for gate valve |
| CN201318460Y (en) * | 2008-12-16 | 2009-09-30 | 成都乘风阀门有限责任公司 | Expanding flat gate valve without flow guiding hole |
| CN201779291U (en) * | 2010-09-20 | 2011-03-30 | 伯特利阀门集团有限公司 | Expanding flat gate valve |
-
2010
- 2010-09-20 CN CN 201010286690 patent/CN101949456A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5657961A (en) * | 1995-04-18 | 1997-08-19 | Kalsi Engineering, Inc. | Flexible wedge gate valve |
| CN2349409Y (en) * | 1998-10-19 | 1999-11-17 | 江苏省国营淮海石油机械厂 | Internal wedged parallel type double gate boards for gate valve |
| CN201318460Y (en) * | 2008-12-16 | 2009-09-30 | 成都乘风阀门有限责任公司 | Expanding flat gate valve without flow guiding hole |
| CN201779291U (en) * | 2010-09-20 | 2011-03-30 | 伯特利阀门集团有限公司 | Expanding flat gate valve |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103917811A (en) * | 2011-09-30 | 2014-07-09 | 集成设备有限公司 | Expanding gate valve assembly |
| US9562613B2 (en) | 2011-09-30 | 2017-02-07 | Integrated Equipment, Inc. | Expanding gate valve assembly |
| CN105333165A (en) * | 2014-08-15 | 2016-02-17 | 德维阀门铸造（苏州）有限公司 | Expansion gate valve |
| CN106641298A (en) * | 2015-10-29 | 2017-05-10 | 德维阀门铸造（苏州）有限公司 | Compact type expansion gate valve |
| CN105351604A (en) * | 2015-11-27 | 2016-02-24 | 四川九天真空科技股份有限公司 | Opening structure and opening method of valve under large pressure difference |
| CN106763855A (en) * | 2017-01-16 | 2017-05-31 | 福建省利邦环境工程有限公司 | Heavy caliber air-valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20110119 |