CN201779291U - Expanding flat gate valve - Google Patents
Expanding flat gate valve Download PDFInfo
- Publication number
- CN201779291U CN201779291U CN2010205353651U CN201020535365U CN201779291U CN 201779291 U CN201779291 U CN 201779291U CN 2010205353651 U CN2010205353651 U CN 2010205353651U CN 201020535365 U CN201020535365 U CN 201020535365U CN 201779291 U CN201779291 U CN 201779291U
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- CN
- China
- Prior art keywords
- valve
- gate
- flashboard
- board
- valve seat
- Prior art date
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- Expired - Lifetime
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Abstract
The utility model relates to an expanding flat gate valve which comprises a valve body, a valve seat, a valve rod and a gate, wherein, the gate is composed of a primary gate and a secondary gate; an upper end of the primary gate is fixedly connected with the valve rod; a V-shaped matching oblique plane is arranged between contact surfaces of the primary gate and the secondary gate; lever lock mechanisms are arranged on side planes of the primary gate and the secondary gate; and guide plates are symmetrically arranged on outer walls of the left valve seat and the right valve seat of the valve body. In the utility model, the gate is in seal fit with the valve seat when the valve is in a completely closed or opened status, and pressure isolation is carried out between a middle cavity of the valve body and a channel medium, thus improving the tightness between a valve cover communicated with the middle cavity of the valve body and the valve rod, and avoiding leakage; during the start and stop process of the valve, the gate and the valve seat are always in a separation status, thus reducing friction among seal pairs and achieving the advantages of small wear, good tightness and the like; and the expanding flat gate valve is particularly applicable to the flat gate valve of a large-diameter pipe.
Description
Technical field
The utility model 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 purpose of this utility model is the shortcoming that exists at prior art, 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.
The technical solution of the utility model 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 by bearing pin respectively advocates peace from flashboard, and two valve seat outer wall symmetries are installed guide plate about valve body.
The utility model 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 utility model.
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 |
|---|---|---|---|
| CN2010205353651U CN201779291U (en) | 2010-09-20 | 2010-09-20 | Expanding flat gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205353651U CN201779291U (en) | 2010-09-20 | 2010-09-20 | Expanding flat gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201779291U true CN201779291U (en) | 2011-03-30 |
Family
ID=43792502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205353651U Expired - Lifetime CN201779291U (en) | 2010-09-20 | 2010-09-20 | Expanding flat gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201779291U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949456A (en) * | 2010-09-20 | 2011-01-19 | 伯特利阀门集团有限公司 | Expansion flat gate valve |
| CN104110509A (en) * | 2013-04-17 | 2014-10-22 | 刘伟 | High-pressure three-way expansion type flat gate valve applied to severe environment |
-
2010
- 2010-09-20 CN CN2010205353651U patent/CN201779291U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949456A (en) * | 2010-09-20 | 2011-01-19 | 伯特利阀门集团有限公司 | Expansion flat gate valve |
| CN104110509A (en) * | 2013-04-17 | 2014-10-22 | 刘伟 | High-pressure three-way expansion type flat gate valve applied to severe environment |
| CN104110509B (en) * | 2013-04-17 | 2017-06-06 | 刘伟 | A kind of Highpressure Tee expanding flat gate valve being applied in severe rugged environment |
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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: 20110330 |
|
| CX01 | Expiry of patent term |