CN2319634Y - Differential fast open/close butterfly bumper - Google Patents
Differential fast open/close butterfly bumper Download PDFInfo
- Publication number
- CN2319634Y CN2319634Y CN 98235205 CN98235205U CN2319634Y CN 2319634 Y CN2319634 Y CN 2319634Y CN 98235205 CN98235205 CN 98235205 CN 98235205 U CN98235205 U CN 98235205U CN 2319634 Y CN2319634 Y CN 2319634Y
- Authority
- CN
- China
- Prior art keywords
- valve
- valve plate
- model
- utility
- spool
- 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 - Fee Related
Links
Images
Landscapes
- Lift Valve (AREA)
Abstract
The utility model relates to a differential fast open and close butterfly bumper, which is a valve. The utility model is composed of a valve body, a connecting rod mechanism arranged in a valve body, a valve seat and a valve plate. The utility model is characterized in that a pressure relief device is arranged between a connecting rod and the valve plate, a valve core is arranged in the middle of the valve plate, the left end of the valve core is provided with a butterfly shape spring, the right end of the valve core is provided with a sealing ring, the connecting rod is connected with the valve core and a through hole which is arranged in the centre of the valve core is communicated with a left chamber and a right chamber of the valve plate. The utility model has the characteristics of small abrasion of the valve seat, long service life and especially convenient open due to friction force which is almost equal to zero. The utility model can be applied in a liquid medium whose pressure is over 1 mpa particularly.
Description
The utility model relates to a kind of valve, particularly a kind of differential type fast opening and closing butterfly valve.
At present, the movement pattern of valve plate has two kinds in the butterfly valve both at home and abroad: (1) comprises that around the butterfly valve that valve shaft rotates in fixed axis the center is vertically board-like to pressing from both sides, and is single eccentric, double eccentric butterfly valve etc.(2) by linkage mechanism, valve plate is done plane motion, comprises three bar butterfly valves, Lever type butterfly valve etc.Aforementioned (1) class butterfly valve, valve plate rotates in fixed axis around fixing valve shaft, and the tangent direction of valve plate and sealing surface of seat has slide relative, so frictional force is big, in use the prooving of valve seat is serious, and employed drive unit needs very big driving moment during unlatching, just is enough to the overcome friction square.The butterfly valve of (2) type, owing to used linkage mechanism, open or close among a small circle in, valve is similar to does translational motion, because the translation direction of valve plate is perpendicular to the surface of contact of valve plate and valve seat, so frictional force is zero no better than, so valve seat does not have wearing and tearing, long service life is opened also lighter.But, the butterfly valve of this structure, all be applied in the gas medium of nominal pressure less than 0.1mpa both at home and abroad at present, and be not suitable in the liquid medium of pressure greater than 1mpa, its main cause is: open moment, valve plate moves horizontally and the compressed liquid medium along conduit axis, because the incompressibility of liquid, so this mobile very difficult, Here it is, and three rod-type butterfly valves seldom are used for the very crux of pressure greater than the liquid medium of 1mpa.
The purpose of the utility model is the three rod-type butterfly valves that disclose a kind of new structure at aforementioned the deficiencies in the prior art, and it can improve the unlatching performance of valve, makes it to be widely used in nominal pressure greater than the differential type fast opening and closing butterfly valve in the liquid medium of 1mpa.
The utility model is realized as follows: differential type fast opening and closing butterfly valve, and it is contained in the linkage mechanism in the valve body 7 by valve body 7, and valve seat 8 and valve plate 6 are formed, wherein: between connecting rod 13 and valve plate 6 pressure relief device is set.The structure of pressure relief device is for adorning a spool 10 in the centre of valve plate 6, left end at spool 10 is equipped with belleville spring 9, right-hand member at spool 10 is equipped with seal ring 12, and connecting rod 13 is connected with spool 10, has the through hole that can communicate with chamber, valve plate 6 left and right sides at the center of spool 10.
Good effect of the present utility model is: for 300mm model machine actual measurement proof, is 1.1mpa situation under at test pressure through nominal diameter, 1/20 of the general butterfly valve required driving torque that its unlatching moment only is same specification.Calculate in theory and show D
wIt is 7266kg that=300 valve plates bear pressure, driving moment must just may be opened valve plate greater than acted on the resisting moment that produces on the valve plate by 7266kg on the valve shaft, behind differential pressure relief device, the total pressure that acts on the spool is 345kg, be 1/21 of general pressure that butterfly valve bears, effect is fairly obvious.So the utility model is rational in infrastructure, easy to operate, the life-span obviously extends.
Description of drawings is as follows:
Fig. 1 is three bar butterfly valve structure sketches.
Fig. 2 is the improved pressure relief device structural drawing of the utility model.
Wherein:
1, main rocker 2, connecting rod 3, from rocking bar 4, frame 5, valve shaft
6, valve plate 7, valve body 8, valve seat 9, belleville spring 10, spool
11, nut 12, seal ring 13, connecting rod
Below in conjunction with accompanying drawing the utility model is described in further detail:
As illustrated in fig. 1 and 2.Differential type fast opening and closing butterfly valve, it is contained in the linkage mechanism in the valve body 7 by valve body 7, and valve seat 8 and valve plate 6 are formed, wherein: between connecting rod 13 and valve plate 6 pressure relief device is set.The structure of pressure relief device is for adorning a spool 10 in the centre of valve plate 6, left end at spool 10 is equipped with belleville spring 9, right-hand member at spool 10 is equipped with seal ring 12, and connecting rod 13 is connected with spool 10, has the through hole that can communicate with chamber, valve plate 6 left and right sides at the center of spool 10.When opening, drive unit drives valve shaft 5 and rotates counterclockwise, and main rocker 1 drivening rod 2 is to right translation, at this moment on the valve plate 6 because of bearing the pressure of Pn=1.1mpa, valve plate 6 is not opened mobile to the right.But connecting rod moves right by nut 11 pulling spools 10, compress belleville spring 9 simultaneously, at this moment seal ring 12 gap occurs with the disengaging of valve plate boss surface of contact, fluid enters the cavity of spool 10 by the gap, enter the opposite side of valve plate again by cavity, at this moment the pressure difference of valve plate both sides reduces rapidly, up to disappearance, just can open valve plate very easily at drive unit effect lower link.
Claims (2)
1, a kind of differential type fast opening and closing butterfly valve, it is contained in the linkage mechanism in the valve body (7) by valve body (7), and valve seat (8) and valve plate (6) are formed, and it is characterized in that: between connecting rod (13) and valve plate (6) pressure relief device is set.
2, differential type fast opening and closing butterfly valve according to claim 1, it is characterized in that: the structure of pressure relief device is for adorning a spool (10) in the centre of valve plate (6), left end at spool (10) is equipped with belleville spring (9), right-hand member at spool (10) is equipped with seal ring (12), connecting rod (13) is connected with spool (10), has the through hole that can communicate with valve plate (6) chamber, the left and right sides at the center of spool (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98235205 CN2319634Y (en) | 1998-01-22 | 1998-01-22 | Differential fast open/close butterfly bumper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98235205 CN2319634Y (en) | 1998-01-22 | 1998-01-22 | Differential fast open/close butterfly bumper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2319634Y true CN2319634Y (en) | 1999-05-19 |
Family
ID=33983551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98235205 Expired - Fee Related CN2319634Y (en) | 1998-01-22 | 1998-01-22 | Differential fast open/close butterfly bumper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2319634Y (en) |
-
1998
- 1998-01-22 CN CN 98235205 patent/CN2319634Y/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201028043Y (en) | Wear-resistant metal hard sealing ball valve | |
| CN101210625A (en) | Plane rotation valve flap stop valve | |
| CN2319634Y (en) | Differential fast open/close butterfly bumper | |
| CN112032325A (en) | Bidirectional sealing butterfly valve | |
| CN112032324A (en) | Metal butterfly valve | |
| CN200989447Y (en) | Self-operated balancing stop valve | |
| CN2307964Y (en) | Closed gas pipeline magnetic valve | |
| CN214119015U (en) | Pipe clamp valve | |
| CN2311659Y (en) | Relief cut-over butterfly valve | |
| CN201053509Y (en) | High pressure dual-seal butterfly valve | |
| CN201180794Y (en) | Air-controlled direct-acting valve | |
| CN2152951Y (en) | Wedge-type ball valve | |
| CN2451840Y (en) | Eccentric two-way sealing ball valve | |
| CN213064654U (en) | Hard seal butterfly valve capable of being maintained quickly | |
| CN216112271U (en) | Novel isolation valve for nuclear power | |
| CN111022679A (en) | Knife gate valve with combined type middle cavity sealing ring | |
| CN215861825U (en) | Zero-abrasion gate valve | |
| CN213685320U (en) | Automatic compensation wear-resistant two-way sealing butterfly valve | |
| CN2240652Y (en) | Plain plate gate valve | |
| CN2531186Y (en) | Double-shaft water sealed butterfly valve | |
| CN216112216U (en) | Slowly close non return butterfly valve structure | |
| CN2361915Y (en) | Conical miter cutting metal hard sealing butterfly valve | |
| CN216746658U (en) | Tool equipment of cast iron brake valve | |
| CN218152401U (en) | High-performance double-eccentric ceramic valve seat | |
| CN221034237U (en) | Internal balance type pneumatic control high-pressure sewage two-position three-way reversing ball valve structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |