CN102155544A - Valve plate eccentric valve with slowly-closed check function - Google Patents
Valve plate eccentric valve with slowly-closed check function Download PDFInfo
- Publication number
- CN102155544A CN102155544A CN 201110073587 CN201110073587A CN102155544A CN 102155544 A CN102155544 A CN 102155544A CN 201110073587 CN201110073587 CN 201110073587 CN 201110073587 A CN201110073587 A CN 201110073587A CN 102155544 A CN102155544 A CN 102155544A
- Authority
- CN
- China
- Prior art keywords
- valve
- valve plate
- plate
- check function
- centre
- 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.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/221—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves specially adapted operating means therefor
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention relates to a valve plate eccentric valve, and in particular relates to a valve plate eccentric valve with a slowly-closed check function, wherein the valve plate eccentric valve provided by the invention can be used for solving the problems of high flow resistance coefficient, poor slowly-closed performance, complex structure, high energy consumption, poor check reliability and high cost of the existing valve plate eccentric valve. The valve plate eccentric valve with the slowly-closed check function comprises an eccentric butterfly valve, wherein the valve body of the eccentric butterfly valve is internally provided with a valve plate; a valve rod is fixed on the eccentric axis of the valve plate; and one end of the valve rod is provided with a swinging oil cylinder. The valve plate eccentric valve provided by the invention has the advantages of reasonable and reliable design, better energy-saving effect, simple and compact structure and low working cost, can be steadily close in case of backflow caused by outage or stop, is convenient to maintain, and can be used as a check valve.
Description
Technical field
The present invention relates to the valve of valve plate off-centre, be specially a kind of valve with valve plate off-centre of Slow Close check function.
Background technique
In the water turbine import, the outlet of water pump, a gate valve (butterfly valve) and a safety check all are installed, operating conditions is regulated and anti-backflow and water hammer generation destruction, existing safety check exists that to have a flow resistance coefficient big, the problem of Slow Close poor performance, two deck valve door expense height are installed simultaneously, flow resistance coefficient is big, power consumption is high, and butterfly valve is simple in structure because of it, size is little, in light weight, the metering characteristics well that reach simple to operate, extensive use, when relating in particular to large bore valves, butterfly valve replaces gate valve, therefore (promptly both can be used as butterfly valve and used, and can be used as safety check again and use) constantly brings forth new ideas two generations an of valve of butterfly valve.
Existing hydraulic butterfly check valve can both be realized the check function of butterfly valve, two generations an of valve, but have following deficiency:
1, complex structure, big, the numerous electric controling element of boundary dimension, all kinds of solenoid valves of hydraulic control, hydraulic control valve, oil cylinder, oil pipe, joint and accumulator, weight mechanisms etc. as long as a link has problem, will influence the reliability of butterfly valve work; 2, hydraulic butterfly valve needs often to start oil pump and gives hydraulic system pressurize, consumed energy during the long-term continuous operation of main frame (water turbine, pump); 3, hydraulic butterfly valve is not the same with safety check, in the improper stall of pump, no matter have a power failure or fault, just reliably close as long as pipeline refluxes, but indirectly by valve front pump power-off signal, the solenoid valve action, throttle down under weight or accumulator effect, if the valve front pump is not the stall owing to cut off the power supply, or the pump outage, electrical equipment, hydraulic control are not normal, and butterfly valve can not cut out by non-return; 4, owing to the complexity of hydraulic butterfly valve structure and control, its cost, use, maintenance cost height, debugging and maintenance bother.
Summary of the invention
The present invention provides a kind of valve with valve plate off-centre of Slow Close check function for the valve that solves existing valve plate off-centre exists that flow resistance coefficient is big, Slow Close poor performance and complex structure, energy consumption are big, non-return poor reliability and the high problem of cost.
The present invention adopts following technological scheme to realize: have the valve of the valve plate off-centre of Slow Close check function, comprise eccentric-butterfly-valve, be provided with valve plate in the valve body of eccentric-butterfly-valve, be fixed with valve rod on the eccentric axis of valve plate, an end of valve rod is provided with and waves oil cylinder.Waving oil cylinder is that those skilled in the art realize easily.Eccentric-butterfly-valve uses as safety check, valve plate can be opened and locate fully, littler than existing safety check flow resistance coefficient simultaneously, make the valve of valve plate off-centre play the Slow Close function when closing by waving oil cylinder with Slow Close check function, simple in structure, energy consumption is less.
The other end of valve rod is provided with worm speed reducer, be connected with mono-directional overrun clutch between worm speed reducer and the valve rod, mono-directional overrun clutch can adopt existing a kind of known configurations at least, and the mode that is connected mono-directional overrun clutch between worm speed reducer and the valve rod realizes easily for those skilled in the art, set up mono-directional overrun clutch and promptly can be used as the use of Slow Close non-return butterfly valve, its motion feature of mono-directional overrun clutch is: the worm gear rotating speed of establishing worm speed reducer is n1, and the valve rod rotating speed is n2; When worm gear is driving link, when n1=n2 clutch; Dang ∣-n1 ∣＞n2 clutch surmounts; When valve rod is driving link, when-n2=-the n1 clutch; When n2＞n1 clutch surmounts; Be butterfly valve when opening and closing and operating conditions being regulated clutch engage with worm gear, when the dish valve is closed in the pipeline backflow, clutch and worm gear disengagement.
The valve body internal fixation has that to be positioned at the valve plate outside (be the direction of the pipeline current at valve place, the direction that refluxes be the inboard) boss, and boss is positioned on the level or vertical plane at valve rod axis place, in the using process, when valve plate opens to maximum position, valve plate contacts with boss, makes the location of valve plate more steady.
Be positioned at the bigger valve plate hinged inside of valve rod one lateral area auxiliary valve plate is arranged, this structural design is mainly used in the horizontal installation of valve of the valve plate off-centre with Slow Close check function, and when the valve plate that valve rod one lateral area is bigger is positioned at the top, auxiliary valve plate closes when the valve proper functioning of the valve plate off-centre with Slow Close check function, when pipeline refluxes, auxiliary valve plate is opened and the valve plate acting in conjunction under the hydrodynamic pressure effect, realize the quick closedown of valve plate, when approaching closing, under the effect of waving oil cylinder, realize cushioning closing.
Waving oil cylinder comprises cylinder body and is positioned at it and is fixed on the external cover of valve rod one end, inboard wall of cylinder block is fixed with external being locked and connects airtight the dividing plate that touches, and external putting is fixed with piston, piston is provided with one-way valve, be fixed with Rectifier plate on the inboard wall of cylinder block between piston and the dividing plate, the internal surface of Rectifier plate is a globoidal structure, and the radial distance between the close dividing plate one end distance piston of Rectifier plate is less than the radial distance between the close piston one end distance piston of Rectifier plate.This structural design is a kind of innovation of waving oil cylinder to existing, structural design is more rationally reliable, during operation, when improper termination of pumping, pipeline refluxes and acts on the moment of torsion moment that valve plate produces, when making the valve plate quick closedown, drive valve rod and piston fast rotation, along with the distance between piston and the throttling version reduces gradually, pressure in the chamber, piston the place ahead is along with continuous increase, velocity of piston is more and more slower, until closing, realizes the Slow Close check function of butterfly valve; When valve was normally opened, fluid entered cavity between piston and the dividing plate by one-way valve, avoids forming vacuum, and when valve was normally closed, because of worm drive speed is low, piston movement speed was low, so can not be subjected to the influence of Rectifier plate.
Mono-directional overrun clutch comprises the outer ring in the worm gear that is fixed on worm speed reducer and fixes and be positioned at the inner ring of outer ring with the valve rod end, corresponding position between outer ring and the inner ring all has draw-in groove, be hinged with ratchet in the draw-in groove of inner ring, and be provided with spring rod between ratchet and the inner ring draw-in groove bottom, this structure is a kind of preferred structure to existing mono-directional overrun clutch, simple in structure, non-slip, driving torque is big, during operation, the worm gear of worm speed reducer clockwise rotates, and the outer ring presses down ratchet throws off itself and inner ring, and valve plate also clockwise rotates under the torsional moment effect of hydrodynamic pressure, open valve, worm gear stops operating, ratchet self-locking, valve plate location; Drive the outer ring rotation when worm gear rotates counterclockwise, the ratchet self-locking drives inner ring and valve rod rotates, and rotates counterclockwise to closing thereby drive valve plate; When improper termination of pumping, pipeline refluxes and acts on valve plate, and when the torsional moment of generation rotated counterclockwise valve plate, inner ring also rotated counterclockwise, and ratchet is depressed, and throw off inner ring and outer ring, the valve plate rapid-closure damper, and this reasonable in design is stable.
Mono-directional overrun clutch comprise in the worm gear that is fixed on worm speed reducer in connect cover and with the fixing declivity chain wheel in valve rod end, in connect the cover internal fixation splined shaft is arranged, be fixed with on the splined shaft and be positioned at the last oblique chain wheel that connects the cover below and cooperate with the declivity chain wheel, this structure is the another kind of preferred structure to existing mono-directional overrun clutch, structural design is more rationally reliable, when worm gear rotates counterclockwise, oblique chain wheel is gone up in cover drive splined shaft rotation drive and the declivity chain wheel rotates thereby connect in the worm gear, thereby drive valve rod and rotate throttle down; When worm gear clockwise rotates, oblique chain wheel clockwise rotates in the drive, unclamp interlock with the declivity chain wheel, valve plate is opened valve and location under current dynamic pressure effect, when improper termination of pumping, pipeline refluxes and acts on valve plate, when the torsional moment of generation rotates counterclockwise valve plate, upper and lower oblique tooth is thrown off the valve plate rapid-closure damper.
Cylinder body is provided with pressure gauge and pressure relay, and is provided with air bag in the cylinder body, and air bag is used for keeping the pressure of low pressure oil in the cylinder body, and implements the remote auto monitoring by pressure gauge on-site supervision and pressure relay.
Reasonable in design of the present invention is reliable, runs into outage or shuts down and to cause backflow, throttle down that can be stable; energy-saving effect is better; have advantage simple in structure, compact, that cost of use is low and easy to maintenance, both can be used as the valve butterfly valve use in two generations, also can be used as safety check and use.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the A-A generalized section among Fig. 1;
Fig. 3 is the B-B generalized section among Fig. 1;
Fig. 4 is the C-C generalized section among Fig. 1;
Fig. 5 is the another kind of structural representation of mono-directional overrun clutch among Fig. 1;
Fig. 6 is the enlarged diagram of D among Fig. 5.
Among the figure: the 1-eccentric-butterfly-valve, the 2-valve plate, the 3-valve rod, 4-waves oil cylinder, the 5-worm speed reducer, the 6-mono-directional overrun clutch, 7-boss, 8-pressure relay, 9-auxiliary valve plate, the 10-cylinder body, the external cover of 11-, 12-dividing plate, 13-piston, the 14-one-way valve, 15-Rectifier plate, 16-air bag, 17-worm gear, the 18-outer ring, the 19-inner ring, the 20-ratchet connects cover in the 21-, 22-declivity chain wheel, 23-splined shaft, the last oblique chain wheel of 24-, 25-spring rod.
Embodiment
Have the valve of the valve plate off-centre of Slow Close check function, comprise eccentric-butterfly-valve 1, be provided with valve plate 2 in the valve body of eccentric-butterfly-valve 1, be fixed with valve rod 3 on the eccentric axis of valve plate 2, an end of valve rod 3 is provided with and waves oil cylinder 4.The other end of valve rod 3 is provided with worm speed reducer 5, is connected with mono-directional overrun clutch 6 between worm speed reducer 5 and the valve rod 3; The valve body internal fixation has the boss 7 that is positioned at valve plate 2 outsides, and boss 7 is positioned on the level or vertical plane at valve rod 3 axis places; Be positioned at bigger valve plate 2 hinged inside of valve rod 3 one lateral areas auxiliary valve plate 9 is arranged; Waving oil cylinder 4 comprises cylinder body 10 and is positioned at it and is fixed on the external cover 11 of valve rod 3 one ends, cylinder body 10 inwalls are fixed with the dividing plate 12 that closely contacts with external cover 11, and be fixed with piston 13 on the external cover 11, piston 13 is provided with one-way valve 14, be fixed with Rectifier plate 15 on cylinder body 10 inwalls between piston 13 and the dividing plate 12, the internal surface of Rectifier plate 15 is a globoidal structure, and the radial distance between the Rectifier plate 15 close dividing plate 12 1 end distance pistons 13 is less than the radial distance between the Rectifier plate 15 close piston 13 1 end distance pistons 13; Mono-directional overrun clutch 6 comprises outer ring 18 in the worm gear 17 that is fixed on worm speed reducer 5 and the inner ring of fixing with valve rod 3 ends 19, is hinged with some ratchets 20 on the outer peripheral surface of inner ring 19; Mono-directional overrun clutch 6 comprises the outer ring 18 in the worm gear 17 that is fixed on worm speed reducer 5 and fixes and be positioned at the inner ring 19 of outer ring 18 with valve rod 3 ends, corresponding position between outer ring 18 and the inner ring 19 all has draw-in groove, be hinged with ratchet 20 in the draw-in groove of inner ring 19, and be provided with spring rod 25 between ratchet 20 and the inner ring 19 draw-in grooves bottom; Mono-directional overrun clutch 6 comprise in the worm gear 17 that is fixed on worm speed reducer 5 in connect cover 21 and with the fixing declivity chain wheel 22 in valve rod 3 ends, in connect cover 21 internal fixation splined shaft 23 arranged, be fixed with on the splined shaft 23 to be positioned at and connect cover 21 belows and the last oblique chain wheel 24 that cooperates with declivity chain wheel 22; Cylinder body 10 is provided with pressure relay 8, and is provided with air bag 16 in the cylinder body 10.In the specific implementation process, the quantity of boss 7 is two; The inboard of auxiliary valve plate 9 is fixed with gusset, when the dynamic pressure effect that is subjected to recirculation water launches, locatees under the effect of gusset; If the line transportation cleaning medium can be from eccentric-butterfly-valve 1 upper connecting tube before the valve plate 2 to the tank filler sleeve that waves oil cylinder 4, cleaning medium replaces fluid, and then need not be provided with air bag 16 this moment; Perhaps directly above waving oil cylinder 4, connect fuel supplement device, also air bag 16 need be set; Upward all having with the center of circle on oblique chain wheel 24 and declivity chain wheel 22 adjacent surfaces is the oblique tooth that the center radially is provided with.
Claims (10)
1. valve with valve plate off-centre of Slow Close check function, it is characterized in that: comprise eccentric-butterfly-valve (1), be provided with valve plate (2) in the valve body of eccentric-butterfly-valve (1), be fixed with valve rod (3) on the eccentric axis of valve plate (2), an end of valve rod (3) is provided with and waves oil cylinder (4).
2. the valve with valve plate off-centre of Slow Close check function according to claim 1 is characterized in that: the other end of valve rod (3) is provided with worm speed reducer (5), is connected with mono-directional overrun clutch (6) between worm speed reducer (5) and the valve rod (3).
3. the valve with valve plate off-centre of Slow Close check function according to claim 1 and 2, it is characterized in that: the valve body internal fixation has the boss (7) that is positioned at valve plate (2) outside, and boss (7) is positioned on the level or vertical plane at valve rod (3) axis place.
4. the valve with valve plate off-centre of Slow Close check function according to claim 1 and 2 is characterized in that: being positioned at bigger valve plate (2) hinged inside of valve rod (3) one lateral areas has auxiliary valve plate (9).
5. the valve with valve plate off-centre of Slow Close check function according to claim 3 is characterized in that: being positioned at bigger valve plate (2) hinged inside of valve rod (3) one lateral areas has auxiliary valve plate (9).
6. the valve with valve plate off-centre of Slow Close check function according to claim 2, it is characterized in that: wave oil cylinder (4) and comprise cylinder body (10) and be positioned at it and be fixed on the external cover (11) of valve rod (3) one ends, cylinder body (10) inwall is fixed with the dividing plate (12) that closely contacts with external cover (11), and be fixed with piston (13) on the external cover (11), piston (13) is provided with one-way valve (14), be fixed with Rectifier plate (15) on cylinder body (10) inwall between piston (13) and the dividing plate (12), the internal surface of Rectifier plate (15) is a globoidal structure, and the radial distance between close dividing plate (12) the one end distance pistons (13) of Rectifier plate (15) is less than the radial distance between close piston (13) the one end distance pistons (13) of Rectifier plate (15).
7. the valve with valve plate off-centre of Slow Close check function according to claim 2, it is characterized in that: mono-directional overrun clutch (6) comprises the outer ring (18) in the worm gear (17) that is fixed on worm speed reducer (5) and fixes and be positioned at the inner ring (19) of outer ring (18) with valve rod (3) end, corresponding position between outer ring (18) and the inner ring (19) all has draw-in groove, be hinged with ratchet (20) in the draw-in groove of inner ring (19), and be provided with spring rod (25) between ratchet (20) and inner ring (19) the draw-in groove bottom.
8. the valve with valve plate off-centre of Slow Close check function according to claim 6, it is characterized in that: mono-directional overrun clutch (6) comprises the outer ring (18) in the worm gear (17) that is fixed on worm speed reducer (5) and fixes and be positioned at the inner ring (19) of outer ring (18) with valve rod (3) end, corresponding position between outer ring (18) and the inner ring (19) all has draw-in groove, be hinged with ratchet (20) in the draw-in groove of inner ring (19), and be provided with spring rod (25) between ratchet (20) and inner ring (19) the draw-in groove bottom.
9. the valve with valve plate off-centre of Slow Close check function according to claim 6, it is characterized in that: mono-directional overrun clutch (6) comprise in the worm gear (17) that is fixed on worm speed reducer (5) in the declivity chain wheel (22) that connects cover (21) and fix with valve rod (3) end, in connect cover (21) internal fixation splined shaft (23) arranged, be fixed with on the splined shaft (23) and be positioned at the last oblique chain wheel (24) that connects cover (21) below and cooperate with declivity chain wheel (22).
10. the valve with valve plate off-centre of Slow Close check function according to claim 9 is characterized in that: cylinder body (10) is provided with pressure relay (8), and is provided with air bag (16) in the cylinder body (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110073587 CN102155544B (en) | 2010-04-28 | 2011-03-25 | Valve plate eccentric valve with slowly-closed check function |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010173711.0 | 2010-04-28 | ||
| CN201010173711 | 2010-04-28 | ||
| CN 201110073587 CN102155544B (en) | 2010-04-28 | 2011-03-25 | Valve plate eccentric valve with slowly-closed check function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102155544A true CN102155544A (en) | 2011-08-17 |
| CN102155544B CN102155544B (en) | 2013-02-13 |
Family
ID=44437157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110073587 Expired - Fee Related CN102155544B (en) | 2010-04-28 | 2011-03-25 | Valve plate eccentric valve with slowly-closed check function |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102155544B (en) |
| WO (1) | WO2011134272A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537383A (en) * | 2011-12-01 | 2012-07-04 | 广东宏威陶瓷实业有限公司 | Improved butterfly valve |
| CN105822773A (en) * | 2014-12-16 | 2016-08-03 | 进典工业股份有限公司 | Eccentric valve and manufacturing method thereof |
| CN110959070A (en) * | 2017-07-27 | 2020-04-03 | 福伊特专利有限公司 | Hydroelectric power plant comprising an electric drive for actuating a flow control valve |
| CN113108152A (en) * | 2021-05-20 | 2021-07-13 | 中北大学 | Method for eliminating water hammer of mine drainage pipeline |
| CN114777023A (en) * | 2022-04-12 | 2022-07-22 | 江苏大学 | Feedback control butterfly valve system and method applying edge calculation |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104565455B (en) * | 2014-12-10 | 2017-04-12 | 凯喜姆阀门有限公司 | Slowly-closing check valve |
| CN105546140A (en) * | 2016-01-22 | 2016-05-04 | 江苏丰源船舶工程有限公司 | Marine rectangular watertight air-operated damper |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2314183Y (en) * | 1998-03-06 | 1999-04-14 | 天津塘沽瓦特斯阀门有限公司 | Slowly closing buterfly style check valve |
| RU2168096C2 (en) * | 1999-07-01 | 2001-05-27 | Акционерное общество закрытого типа Научно-производственная фирма "Центральное конструкторское бюро арматуростроения" | Nonreturn gate with drive |
| CN1598377A (en) * | 2004-08-19 | 2005-03-23 | 湖南泵阀制造有限公司 | Composite dual-supporting double-speed multifunctional valve |
| CN2781122Y (en) * | 2005-04-05 | 2006-05-17 | 安徽铜都阀门有限公司 | Butterfly micro-block slow closed check valve |
| CN2859072Y (en) * | 2005-12-02 | 2007-01-17 | 蔡国法 | One-way clutch for moped |
| CN201121721Y (en) * | 2007-10-18 | 2008-09-24 | 浙江三方集团有限公司 | Three-eccentric metal sealing butterfly valve |
| RU2354878C1 (en) * | 2008-01-09 | 2009-05-10 | Открытое акционерное общество "ПТПА" | Back valve with swing gate and paddle damper |
| US20090309057A1 (en) * | 2008-06-11 | 2009-12-17 | Domenico Liccardi | Manual valve operator with override clutch apparatus |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH370987A (en) * | 1958-04-21 | 1963-07-31 | Adams Karl | Non-return valve in a pipe section that can be used as a shut-off valve, for large liquid lines |
| US3298659A (en) * | 1962-12-21 | 1967-01-17 | Cupedo Douwe Janse | Fluid power actuated butterfly valve or plug cock |
-
2011
- 2011-03-25 CN CN 201110073587 patent/CN102155544B/en not_active Expired - Fee Related
- 2011-03-29 WO PCT/CN2011/000537 patent/WO2011134272A1/en active Application Filing
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2314183Y (en) * | 1998-03-06 | 1999-04-14 | 天津塘沽瓦特斯阀门有限公司 | Slowly closing buterfly style check valve |
| RU2168096C2 (en) * | 1999-07-01 | 2001-05-27 | Акционерное общество закрытого типа Научно-производственная фирма "Центральное конструкторское бюро арматуростроения" | Nonreturn gate with drive |
| CN1598377A (en) * | 2004-08-19 | 2005-03-23 | 湖南泵阀制造有限公司 | Composite dual-supporting double-speed multifunctional valve |
| CN2781122Y (en) * | 2005-04-05 | 2006-05-17 | 安徽铜都阀门有限公司 | Butterfly micro-block slow closed check valve |
| CN2859072Y (en) * | 2005-12-02 | 2007-01-17 | 蔡国法 | One-way clutch for moped |
| CN201121721Y (en) * | 2007-10-18 | 2008-09-24 | 浙江三方集团有限公司 | Three-eccentric metal sealing butterfly valve |
| RU2354878C1 (en) * | 2008-01-09 | 2009-05-10 | Открытое акционерное общество "ПТПА" | Back valve with swing gate and paddle damper |
| US20090309057A1 (en) * | 2008-06-11 | 2009-12-17 | Domenico Liccardi | Manual valve operator with override clutch apparatus |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537383A (en) * | 2011-12-01 | 2012-07-04 | 广东宏威陶瓷实业有限公司 | Improved butterfly valve |
| CN105822773A (en) * | 2014-12-16 | 2016-08-03 | 进典工业股份有限公司 | Eccentric valve and manufacturing method thereof |
| CN105822773B (en) * | 2014-12-16 | 2018-08-31 | 进典工业股份有限公司 | Eccentric valve and method for manufacturing sealing member thereof |
| CN110959070A (en) * | 2017-07-27 | 2020-04-03 | 福伊特专利有限公司 | Hydroelectric power plant comprising an electric drive for actuating a flow control valve |
| US10859060B2 (en) | 2017-07-27 | 2020-12-08 | Voith Patent Gmbh | Hydroelectric power plant having an electrical drive for actuating the inlet valve |
| CN113108152A (en) * | 2021-05-20 | 2021-07-13 | 中北大学 | Method for eliminating water hammer of mine drainage pipeline |
| CN113108152B (en) * | 2021-05-20 | 2022-06-07 | 中北大学 | Method for eliminating water hammer of mine drainage pipeline |
| CN114777023A (en) * | 2022-04-12 | 2022-07-22 | 江苏大学 | Feedback control butterfly valve system and method applying edge calculation |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011134272A1 (en) | 2011-11-03 |
| CN102155544B (en) | 2013-02-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102155544B (en) | Valve plate eccentric valve with slowly-closed check function | |
| CN100593646C (en) | Unpowered oil supplied direct drive displacement control electrohydraulic servo- closed type oil source system | |
| CN101709799B (en) | Multifunctional sleeve type energy dissipation valve | |
| CN204592437U (en) | A kind of inclined disc type buffer check valve | |
| CN102003432B (en) | Electro-hydraulic actuator | |
| CN102116377B (en) | Water-saving antifreezing device | |
| CN208311566U (en) | A kind of Novel swing check valve | |
| CN2284326Y (en) | Butterfly slowly-closed check valve | |
| CN212004507U (en) | Float valve | |
| CN201874923U (en) | Electro-hydraulic actuator | |
| CN208474084U (en) | A kind of direct-connected oil pump test record device | |
| CN201554635U (en) | Multifunctional self-operated sleeve-type energy dissipating valve | |
| CN110156184A (en) | A kind of intelligence injector | |
| CN201902584U (en) | Flat gate valve | |
| CN202418612U (en) | Electrohydraulic control valve | |
| CN2781122Y (en) | Butterfly micro-block slow closed check valve | |
| CN111852338B (en) | Sliding sleeve type horizontal well floating device | |
| CN219343073U (en) | Integrated pump gate system and gate station | |
| CN216200637U (en) | High leakproofness electric valve | |
| CN112253783B (en) | Pump-controlled motor-driven large-caliber fixed ball valve | |
| CN214997588U (en) | Ground driving system of water-driven rodless pump | |
| CN2390059Y (en) | Hydrautic butterfly valve | |
| CN214248413U (en) | Intelligent lifting check valve | |
| CN2261540Y (en) | Hydraulic micro-resistant slow action check valve | |
| CN202048229U (en) | Water-saving antifreezing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 045000, Shanxi city Yangquan City vocational secondary school transportation dormitory building 1-5 Patentee after: Jing Suoxiang Address before: 453011 No. 253, middle Jianshe Road, Xinxiang, Henan Patentee before: Jing Suoxiang |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20180325 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |