CN1082680A - Liquid (gas) hydraulic (pneumatic) slowly closing off-axial butterfly valve - Google Patents
Liquid (gas) hydraulic (pneumatic) slowly closing off-axial butterfly valve Download PDFInfo
- Publication number
- CN1082680A CN1082680A CN 92103700 CN92103700A CN1082680A CN 1082680 A CN1082680 A CN 1082680A CN 92103700 CN92103700 CN 92103700 CN 92103700 A CN92103700 A CN 92103700A CN 1082680 A CN1082680 A CN 1082680A
- Authority
- CN
- China
- Prior art keywords
- valve
- hydraulic cylinder
- piston
- slow close
- slow
- 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.)
- Pending
Links
Images
Landscapes
- Details Of Valves (AREA)
- Fluid-Driven Valves (AREA)
Abstract
The invention provides a kind of in the unexpected termination of pumping process of pressurized with fluid pump liquid (gas) the control Slow Close off-axis butterfly valve of surge suppressing, this valve is made up of valve body, oil hydraulic cylinder, pilot valve, Slow Close plug, piston in hydraulic cylinder is controlled the open and close of flap by chute.Its feature is to prevent pump-stopping water hammer, also can eliminate noise effectively, and structure length is little in light weight, and is little to the fluid coefficient of friction resistance of being carried, and obvious energy conservation is the desirable safe energy saving devices of all kinds of pipe-line for conveying liquids.
Description
The present invention relates to a kind of buffer valve, when liquid in pipeline during reverse flow, this valve realizes that by pilot valve two stages closed first quick and back slow, thereby reduce the pressure surge that the refluence water yield and pump-stopping water hammer cause effectively, The present invention be more particularly directed to a kind of off-axis butterfly flap that utilizes and realize that Slow Close is eliminated the noise and the device of pilot pressure fluctuation.
In water-carriage system, when compression pump stops suddenly, can cause the unexpected variation of water velocity in the pipeline, thereby cause pressure surge, be commonly referred to as pump-stopping water hammer.May cause the rapid strong vibration even the destruction of compression pump and pipeline, and produce very big Strike note.
The shortcoming of the buffer valve that has earlier is the bump sound in the time of can not preventing termination of pumping especially effectively, and physical dimension is excessive, makes the product cost too high.
The present invention is intended to keep under the key property prerequisite that the buffer valve that has earlier prevents pump-stopping water hammer, according to the hydraulic characteristic in the closed procedure of flap pass, adopt the method for butterfly biasing flap, making flap close resistance evenly increases, and the Slow Close mechanism of making flap of oil hydraulic cylinder, make pump-stopping water hammer controlled, bump is eliminated.Thereby it is little to obtain a kind of mistake flow resistance, and structure is short, lightweight slow closed check damper.
Slow Close formula off-axis butterfly valve of the present invention is made up of valve body, oil hydraulic cylinder, pilot-actuated valve and Slow Close plug.Oil hydraulic cylinder bottom and casing wall respectively have a discharge orifice, and they pass through conduit respectively, the Slow Close plug, and pilot valve is communicated with valve body.When manifold pressure is reduced to a certain degree or water is anti-when flowing, the pilot valve action is reduced to zero with hydraulic pressure in the oil hydraulic cylinder, and leaks under the effect of piston upper springs, piston is moved down, flap ShiShimonoseki rapidly.When piston moved down into certain position, oil hydraulic cylinder bottom discharge orifice was closed, in the cylinder body water only by Slow Close flow beyond the Great Wall realization first quick and back slow two stages close flap, reach and eliminate noise and water hammering.
Waterpower impact noise when Slow Close formula off-axis butterfly valve of the present invention can prevent effectively promptly that pump-stopping water hammer from can eliminate termination of pumping again, thus a kind of noise elimination apparatus of perfect safety protection is provided for water delivery (or other liquid gas).And in proper functioning, this valve resistance is very little, and more old-fashioned safety check is energy-conservation, and structure length is little, and cost is low.
Describe the concrete structure of Slow Close axle butterfly valve of the present invention in detail below in conjunction with accompanying drawing
Accompanying drawing is the plan view and the right elevation of a kind of concrete structure of the present invention.
With reference to accompanying drawing, the valve body 1 that has inner seal ring 22 constitutes an airtight fluid passage, and flap 2 is by main shaft 20 and the hinge joint of valve body off-axis, and the O RunddichtringO 21 that is contained on the main shaft is hedged off from the outer world the interior current of valve body.Oil hydraulic cylinder is affixed by swash plate 23 and valve body 1, oil hydraulic cylinder 8 usefulness conduits also are communicated with valve body 1 by Slow Close plug 10 and pilot valve 3, the effect of pilot valve 3 be after water pump is opened, the oil hydraulic cylinder inner chamber is hedged off from the outer world and with valve body in be communicated with, oil hydraulic cylinder inner chamber pressure water emptying when termination of pumping, the effect of Slow Close plug 10 is the later stages of closing closed procedure at flap, by the drainage rate of water in the restriction oil hydraulic cylinder, realize Slow Close, prevent water hammer and eliminate noise.Hydraulic cylinder shell is by cylinder body and upper cover plate 6, lower cover plate 17 is formed, have O RunddichtringO 16 on the lower cover plate, the piston 7 of O RunddichtringO 12 is housed in the hydraulic cylinder, be connected with chute 25 by piston rod 9, chute 25 is by bearing pin 18, rocking bar 19 is connected with main shaft 20, thereby the to-and-fro motion of hydraulic cylinder piston 7 and the rotation of flap are connected, the effect of Slow Close ring 14 gentle closed loop seats 15 is pod apertures of confining liquid cylinder pressure lower cover when piston is finished the quick closing valve process, and water only flows out by Slow Close ring 10 in the cylinder body thereby make.Spring 13 is when flap is opened once more Slow Close ring 14 to be resetted.The spring 11 that is added on the piston 7 can make piston quicken quick closing valve.Position-limited lever 4 and back of the body cap 5 limit the maximum vertical penetration of piston 7, thereby make flap guarantee maximum opening, and when position-limited lever is threaded to lower limit, make this valve play the maintenance valve.
The attainable another kind of structural type of this valve is to change into chute 8 and being connected of rocking bar 19 by bearing pin 18 hinge joints, and hydraulic cylinder can rotate around a stationary axle simultaneously.When pilot valve adopts electromagnetic switch control, can cancel spring 11, bonnet 6 employing O type circle sealings, be communicated with the oil hydraulic cylinder epicoele with conduit, it is the attainable another kind of combining form of this valve, and this combination makes this valve except that above-mentioned functions, the effect that also has operated valve, but these two kinds of structural types are all within the scope of the present invention.
This valve is mainly used in water drainage-supply system, also can use on other non-corrosive liquid of conveying and gas pipeline.
Claims (3)
1, liquid (gas) the control Slow Close off-axis butterfly valve a kind of by valve body 1, flap 2, oil hydraulic cylinder 8, chute 25 and conduit 14, that pilot valve 3 is formed.It is characterized in that: flap links on valve body 1 by main shaft 20 off-axis ground, oil hydraulic cylinder 8 is loaded on valve body one side, oil hydraulic cylinder 8 inner carriers 7 are by piston rod 9, chute 25 (also can link) bearing pin 18 rocking bars 19, main shaft 20 make the rotation of flap 2 be subjected to piston 7 controls, oil hydraulic cylinder 8 is by conduit 24, pilot valve 3, Slow Close plug 10 are connected with valve body makes piston 7 realize controlled or two stage ShiShimonoseki first quick and back slow automatically, and the action force of piston in hydraulic cylinder 7 is provided by the liquid in the valve body 1.
2, control Slow Close off-axis butterfly valve by the liquid (gas) of claim 1 regulation, it is characterized in that: to move down be to realize like this to piston in hydraulic cylinder 7 two stages first quick and back slow, automatic control signal or pipeline inner fluid change and cause the pilot valve action, thereby make conduit 24 and valve body partition and lead directly to atmosphere, the water piston 7 that outflows rapidly moves down fast in the cylinder body, when Slow Close ring 14 was pressed on the Slow Close ring seat 15, current only leaked by Slow Close plug 10 in the cylinder body, thereby piston 7 is moved down at a slow speed.
3, control Slow Close off-axis butterfly valve by the liquid (gas) of claim 1 regulation, it is characterized in that: rocking bar 19 and flap 2 are the 20-70 degree by main shaft 20 angle that is connected, optimum angle is 45 °, and when piston rod 9 adopted the hinge joint mode with rocking bar 19, this angular range can expand 0-90 ° to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92103700 CN1082680A (en) | 1992-05-16 | 1992-05-16 | Liquid (gas) hydraulic (pneumatic) slowly closing off-axial butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92103700 CN1082680A (en) | 1992-05-16 | 1992-05-16 | Liquid (gas) hydraulic (pneumatic) slowly closing off-axial butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1082680A true CN1082680A (en) | 1994-02-23 |
Family
ID=4940372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92103700 Pending CN1082680A (en) | 1992-05-16 | 1992-05-16 | Liquid (gas) hydraulic (pneumatic) slowly closing off-axial butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1082680A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100359230C (en) * | 2004-08-19 | 2008-01-02 | 湖南泵阀制造有限公司 | Composite dual-supporting double-speed multifunctional valve |
| CN113154096A (en) * | 2021-05-19 | 2021-07-23 | 博纳斯威阀门股份有限公司 | Method and closing device for closing check valve at zero flow rate |
-
1992
- 1992-05-16 CN CN 92103700 patent/CN1082680A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100359230C (en) * | 2004-08-19 | 2008-01-02 | 湖南泵阀制造有限公司 | Composite dual-supporting double-speed multifunctional valve |
| CN113154096A (en) * | 2021-05-19 | 2021-07-23 | 博纳斯威阀门股份有限公司 | Method and closing device for closing check valve at zero flow rate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110671502B (en) | Water hammer resistant stop valve | |
| CN104534164A (en) | Efficient control flow speed valve | |
| US4706933A (en) | Oil and gas well safety valve | |
| CN1082680A (en) | Liquid (gas) hydraulic (pneumatic) slowly closing off-axial butterfly valve | |
| US6918407B2 (en) | Pneumatic reset relief valve | |
| CN205479527U (en) | Check valve with adjustable damping buffering | |
| CN110388484B (en) | Swing check valve | |
| CN1098177A (en) | Liquid (gas) hydraulic (pneumatic) slow-closure butterfly valve with normal off-axis | |
| CN207486079U (en) | A kind of speed closes butterfly valve | |
| CN207080654U (en) | A kind of ramp type three-level Slow Close non-return butterfly valve | |
| CN110725959A (en) | Multifunctional butterfly valve for steam turbine | |
| CN101963249B (en) | High temperature micro-resistance slow closure check valve | |
| CN211010010U (en) | Swing type rubber valve clack slow-closing check valve | |
| US3682436A (en) | Actuators for pressure loaded valves | |
| CN114484053A (en) | Control system of pneumatic stop valve | |
| CN210141363U (en) | Pneumatic track ball valve with hydraulic damping device for buffering | |
| KR200492421Y1 (en) | Valve opening / closing device using diaphragm linked with pneumatic actuator | |
| KR20070009766A (en) | Check valve system | |
| KR200164269Y1 (en) | Check valve for pump | |
| KR101523955B1 (en) | Check valve having dual mode of fast and slow closing controlled by variable throttle | |
| US5310322A (en) | Hydraulic ram pumps | |
| RU2174633C1 (en) | Check valve | |
| CN2130969Y (en) | Stop valve | |
| CN117090992B (en) | Pneumatic stop valve | |
| CN2242973Y (en) | Wheel drilling joint |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |