CN107013734B - Electric valve opening and closing protector - Google Patents
Electric valve opening and closing protector Download PDFInfo
- Publication number
- CN107013734B CN107013734B CN201710408657.5A CN201710408657A CN107013734B CN 107013734 B CN107013734 B CN 107013734B CN 201710408657 A CN201710408657 A CN 201710408657A CN 107013734 B CN107013734 B CN 107013734B
- Authority
- CN
- China
- Prior art keywords
- closing
- opening
- buffer frame
- limiting
- valve
- 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.)
- Active
Links
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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
-
- 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/28—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with resilient valve members
-
- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/05—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor specially adapted for operating hand-operated valves or for combined motor and hand operation
-
- 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
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrically Driven Valve-Operating Means (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention relates to the technical field of valves and provides an electric valve opening and closing protection device, which comprises a valve rod and a support, wherein a connecting column is arranged between a lower opening and closing buffer frame and an upper opening and closing buffer frame, spring columns are uniformly distributed between the lower opening and closing buffer frame and the support, limiting pieces with diameters larger than those of the spring columns are further arranged at the upper free ends of the spring columns, lower buffer springs are respectively arranged at the outer sides of the circumferences of the spring columns between the lower opening and closing buffer frame and the support, upper buffer springs are respectively arranged at the outer sides of the circumferences between the lower opening and closing buffer frame and the upper opening and closing buffer frame, the upper end of the valve rod is connected with a driving device in a linkage manner, an opening and closing limiting device is further arranged at one side of the support, an upper limiting contact and a lower limiting contact are arranged on the opening and closing limiting device, a limiting plate is arranged at one side of the lower opening and closing buffer frame and is positioned between the upper limiting contact and the lower limiting contact, a control circuit board is further arranged on the support, and the upper limiting contact and the driving device are respectively electrically connected with the control circuit board.
Description
Technical Field
The invention relates to the technical field of valves, in particular to an electric valve opening and closing protection device.
Background
Electric gate valves are known, in which an electric actuator drives a valve rod to act and rotate in a clockwise or counterclockwise direction to close or open the valve. The same kind of valve also adopts a shielding type totally-enclosed electric gate valve, which mainly comprises a valve and a shielding electric device. The valve part mainly comprises a valve body, a valve cover, a flashboard, a ball screw pair, a bearing and the like, a position indicator is arranged on the valve cover, and the opening or closing of the valve is controlled by a feedback signal of the position indicator. The electric valve has small switching torque, small volume and light weight, but the following problems exist when the valve is opened and closed:
1. because the electric control often has the problem of inaccurate opening and closing positions of the valve, the phenomenon that the valve is closed in place or is slightly opened due to impact rebound often occurs, and great difficulties are brought to the use, maintenance, debugging and operation of the valve;
2. the impact force when the electric quick control gate is opened and closed is large, the upward and downward movement is unstable, and the valve rod is easy to wear after long-term rotation, so that the defect that the valve is not closed in place is caused, the phenomenon of medium leakage is easy to occur, and the service life of the valve is shortened.
3. The manual operation device is arranged, so that the valve can not be opened or closed under the condition of power failure, the valve can be limited to be opened or closed, and the use is very inconvenient.
Disclosure of Invention
Therefore, aiming at the problems, the invention provides the electric valve opening and closing protection device which has reasonable structural design and good opening and closing stability and saves time and labor during closing.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the electric valve opening and closing protection device comprises a valve rod, and further comprises a support arranged above a valve body, a lower opening and closing buffer frame is arranged above the support, an upper opening and closing buffer frame is arranged above the lower opening and closing buffer frame at intervals, a driving frame is arranged above the upper opening and closing buffer frame at intervals, a connecting column is arranged between the lower opening and closing buffer frame and the upper opening and closing buffer frame, spring columns are uniformly distributed between the lower opening and closing buffer frame and the support, the upper part of each spring column extends out of the lower opening and closing buffer frame and is positioned between the lower opening and closing buffer frame and the upper opening and closing buffer frame, the upper free end of each spring column is further provided with a limiting part with a diameter larger than that of each spring column, lower opening and closing buffer frames and the outer side of the circumference of each spring column between the lower opening and closing buffer frame are respectively provided with a lower buffer spring, the lower opening and closing buffer frame and the outer circumference of each upper opening and closing buffer frame are respectively provided with an upper buffer spring, the valve rod penetrates through the support, the lower end of each valve rod is connected with a valve opening and closing part, the upper end of each valve rod extends out of the support, the lower buffer frame, the upper opening and closing buffer frame and the driving frame are uniformly connected with the driving device, one side of each support is further provided with an opening and closing limiting device, the upper opening and closing device is positioned between the upper limiting plate and the lower limiting plate and the upper limiting plate and the lower limiting plate, the upper limiting plate and the lower limiting plate are respectively connected with the upper limiting plate and the lower limiting plate.
The improved structure is characterized in that a speed reducing gear set and a valve rod gear are arranged between the upper opening and closing buffer frame and the driving frame, the valve rod gear is meshed with the speed reducing gear set, the speed reducing gear set is connected with an output rod of the driving device, and the valve rod is in threaded connection with the valve rod gear.
The opening and closing limiting device comprises a limiting seat, an upper limiting sliding sleeve and a lower limiting sliding sleeve which are arranged on a support, wherein limiting screws are respectively arranged on the left side and the right side of the limiting seat, the upper limiting sliding sleeve and the lower limiting sliding sleeve are respectively in threaded connection with the corresponding limiting screws, an upper limiting contact is arranged on the upper limiting sliding sleeve, and a lower limiting contact is arranged on the lower limiting sliding sleeve.
The automatic opening and closing device is characterized in that a manual operation device is further arranged on one side of the speed reduction gear set above the upper opening and closing buffer frame, the manual operation device comprises a manual operation rod and a driving gear, the driving gear is connected with the speed reduction gear set in a meshed mode, the operation rod can be lifted up and down and arranged on the upper opening and closing buffer frame, the driving gear is fixedly arranged on the outer side of the operation rod, a compression spring is arranged between the driving gear and the upper opening and closing buffer frame, the upper end of the operation rod extends out of the driving frame, a positioning clamping groove is formed in the upper portion of the driving frame, and a positioning ring is arranged on the positioning clamping groove.
The improved structure is characterized in that a memory encoder is further arranged on one side of the driving frame, a debugging memory gear is rotatably arranged on the memory encoder through a rotating shaft, a tooth row capable of lifting up and down along with the valve rod is further arranged on one side of the debugging memory gear, the tooth row is in meshed connection with the debugging memory gear, and the memory encoders are respectively and electrically connected with the control circuit board.
The further improvement is that the position of the upper opening and closing buffer frame corresponding to the tooth row is fixedly provided with a tooth row positioning sliding sleeve, and the tooth row is penetrated in the tooth row positioning sliding sleeve.
The further improvement is that: the driving device is a motor.
By adopting the technical scheme, the invention has the beneficial effects that: when the valve is in operation, the driving device drives the valve rod gear to rotate through the reduction gear set, and the valve rod gear drives the valve rod to move up and down while rotating so as to realize the automatic opening and closing functions of the valve. When the driving device drives the valve rod to move downwards until the valve opening and closing piece and the valve body are closed, at the moment, the continuous rotation of the driving device drives the lower opening and closing buffer frame to compress the upper buffer spring to move upwards until the limiting plate touches the upper limiting contact, the system drives the driving device to stop working, the valve is closed in place, the buffer spring can play a role in protecting the opening and closing safety of the valve, the effect of precisely controlling the closing of the valve is achieved, the impact force of the valve during closing is reduced, and meanwhile, the elastic pressure of the upper buffer spring also plays a pre-tightening effect on the closed valve, so that the valve is closed in place, the phenomenon that a closed medium leaks or the phenomenon that the valve is slightly opened due to impact rebound does not occur, the service life of the valve is prolonged, and great convenience is brought to the use, the maintenance, the debugging and the operation of the valve; when the driving device drives the valve rod to move upwards to the maximum valve opening, at the moment, the driving device is driven to rotate continuously, the lower buffer frame is driven to compress the lower buffer spring to move downwards, until the limiting plate touches the lower limiting contact, the system drives the driving device to stop working, the valve opening is in place, the impact force of the valve when the valve is started is reduced due to the arrangement of the lower buffer spring, the ascending stability of the valve is good, and the service life of the valve is prolonged.
The further improvement is that: the manual operation device is arranged, so that people can open or close the valve through the manual operation device under the condition of power failure, the valve is flexible and unrestricted to open and close, and the valve is very inconvenient to use.
Drawings
Fig. 1 is a schematic perspective view of an embodiment of the present invention.
Detailed Description
The invention will now be further described with reference to the drawings and detailed description.
Referring to fig. 1, an embodiment of the invention discloses an electric valve opening and closing protection device, which comprises a valve rod 1, and further comprises a support 2 arranged above a valve body of the valve, wherein a lower opening and closing buffer frame 3 is arranged above the support 2, an upper opening and closing buffer frame 4 is arranged above the lower opening and closing buffer frame 3 at intervals, a driving frame 5 is arranged above the upper opening and closing buffer frame 4 at intervals, a connecting column is arranged between the lower opening and closing buffer frame 3 and the upper opening and closing buffer frame 4, spring columns 21 are uniformly distributed between the lower opening and closing buffer frame 3 and the support 2, the upper part of each spring column 21 extends out of the lower opening and closing buffer frame 3 and is positioned between the lower opening and closing buffer frame 3 and the upper opening and closing buffer frame 4, a limiting piece 22 with the diameter larger than that of each spring column 21 is further arranged at the upper free end of each spring column 21, lower buffer springs 61 are respectively arranged at the outer sides of the circumferences of the spring columns 21 between the lower opening and closing buffer frame 3 and the support 2, upper buffer springs 62 are respectively arranged at the outer circumferences between the lower opening and closing buffer frame 3 and the upper opening and closing buffer frame 4, the valve rod 1 penetrates through the support 2, the lower end of each valve rod 1 is connected with the upper opening and closing buffer frame 1, the upper opening and closing buffer frame 2, the upper opening and closing buffer frame 4 and the driving device is connected with the upper opening and closing device 5. The support is characterized in that an opening and closing limiting device is further arranged on one side of the support 2, the opening and closing limiting device comprises a limiting seat 71, an upper limiting sliding sleeve 72 and a lower limiting sliding sleeve 73 which are arranged on the support 2, limiting screws 74 are respectively arranged on the left side and the right side of the limiting seat 71, the upper limiting sliding sleeve 72 and the lower limiting sliding sleeve 73 are respectively in threaded connection with the corresponding limiting screws 74, an upper limiting contact 721 is arranged on the upper limiting sliding sleeve 72, and a lower limiting contact 731 is arranged on the lower limiting sliding sleeve 73. One side of the lower opening and closing buffer frame 3 is provided with a limiting plate 31, the limiting plate 31 is positioned between an upper limiting contact 721 and a lower limiting contact 731, the support 2 is also provided with a control circuit board 66, and the upper limiting contact 721, the lower limiting contact 731 and the motor are respectively electrically connected with the control circuit board 66.
A speed reducing gear set 64 and a valve rod gear 65 are arranged between the upper opening and closing buffer frame 3 and the driving frame 5, the valve rod gear 65 is meshed with the speed reducing gear set 64, the speed reducing gear set 64 is connected with an output rod of a motor, and the valve rod 1 is in threaded connection with the valve rod gear 65.
The upper opening and closing buffer frame 4 is characterized in that a manual operation device is further arranged on one side of the speed reduction gear set 64 above the upper opening and closing buffer frame 4, the manual operation device comprises a manual operation rod 81 and a driving gear 82, the driving gear 82 is connected with the speed reduction gear set 64 in a meshed mode, the operation rod 81 can be lifted up and down and is arranged on the upper opening and closing buffer frame 4, the driving gear 82 is fixedly arranged on the outer side of the operation rod 81, a compression spring 83 is arranged between the driving gear 82 and the upper opening and closing buffer frame 4, the upper end of the operation rod 81 extends out of the driving frame 5, the operation rod 81 is located on the upper portion of the driving frame 5 and provided with a positioning clamping groove (not shown in the drawing), and a positioning ring (not shown in the drawing) is arranged on the positioning clamping groove. When the power failure needs manual operation, the positioning ring is taken down, the operating rod is pressed to enable the driving gear 82 of the operating rod to overcome the pressure of the compression spring and be in meshed connection with the reduction gear set 64, and after the reduction gear set 64 is in meshed connection with the driving gear 82, the operating rod is manually rotated to drive the valve rod to move up and down so as to realize the manual opening and closing function. The manual operation device is arranged, so that people can open or close the valve through the manual operation device under the condition of power failure, the valve is flexible and unrestricted to open and close, and the valve is very inconvenient to use.
One side of the driving frame 5 is also provided with a memory encoder (not shown in the figure), the memory encoder (not shown in the figure) is rotatably provided with a debugging memory gear 91 through a rotating shaft, one side of the debugging memory gear 91 is also provided with a tooth row 92 which can lift up and down along with the valve rod 1, the tooth row 92 is in meshed connection with the debugging memory gear 91, and the memory encoder 9 is respectively and electrically connected with the control circuit board 66.
The position of the upper opening and closing buffer frame 4 corresponding to the tooth row 92 is also fixedly provided with a tooth row positioning sliding sleeve (not shown in the figure), and the tooth row 92 is arranged in the tooth row positioning sliding sleeve in a penetrating way.
When the valve is in operation, the driving device drives the valve rod gear to rotate through the reduction gear set, and the valve rod gear drives the valve rod to move up and down while rotating so as to realize the automatic opening and closing functions of the valve. When the driving device drives the valve rod to move downwards until the valve opening and closing piece and the valve body are closed, at the moment, the continuous rotation of the driving device drives the lower opening and closing buffer frame to compress the upper buffer spring to move upwards until the limiting plate touches the upper limiting contact, the system drives the driving device to stop working, the valve is closed in place, the buffer spring can play a role in protecting the opening and closing safety of the valve, the effect of precisely controlling the closing of the valve is achieved, the impact force of the valve during closing is reduced, and meanwhile, the elastic pressure of the upper buffer spring also plays a pre-tightening effect on the closed valve, so that the valve is closed in place, the phenomenon that a closed medium leaks or the phenomenon that the valve is slightly opened due to impact rebound does not occur, the service life of the valve is prolonged, and great convenience is brought to the use, the maintenance, the debugging and the operation of the valve; when the driving device drives the valve rod to move upwards to the maximum valve opening, at the moment, the driving device is driven to rotate continuously, the lower buffer frame is driven to compress the lower buffer spring to move downwards, until the limiting plate touches the lower limiting contact, the system drives the driving device to stop working, the valve opening is in place, the impact force of the valve when the valve is started is reduced due to the arrangement of the lower buffer spring, the ascending stability of the valve is good, and the service life of the valve is prolonged.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (5)
1. Electric valve opens and close protection device, including the valve rod, its characterized in that: the valve is characterized by further comprising a support arranged above the valve body of the valve, a lower opening and closing buffer frame is arranged above the support, an upper opening and closing buffer frame is arranged above the lower opening and closing buffer frame at intervals, a driving frame is arranged above the upper opening and closing buffer frame at intervals, connecting columns are arranged between the lower opening and closing buffer frame and the upper opening and closing buffer frame, spring columns are uniformly distributed between the lower opening and closing buffer frame and the support, the upper part of each spring column extends out of the lower opening and closing buffer frame and is positioned between the lower opening and closing buffer frame and the upper opening and closing buffer frame, the upper free end of each spring column is further provided with a limiting part with the diameter larger than that of each spring column, lower buffer springs are respectively arranged outside the circumferences of the spring columns between the lower opening and closing buffer frame and the support, upper buffer springs are respectively arranged outside the circumferences of the spring columns between the lower opening and closing buffer frame, and the valve rod penetrates through the support, the lower end of the valve rod is connected with a valve opening and closing piece, the upper end of the valve rod extends out of a support, a lower opening and closing buffer frame, an upper opening and closing buffer frame and a driving frame are connected with a driving device in a linkage way, one side of the support is also provided with an opening and closing limiting device, the opening and closing limiting device is provided with an upper limiting contact and a lower limiting contact which are arranged at intervals, one side of the lower opening and closing buffer frame is provided with a limiting plate, the limiting plate is positioned between the upper limiting contact and the lower limiting contact, the support is also provided with a control circuit board, the upper limiting contact, the lower limiting contact and the driving device are respectively electrically connected with the control circuit board, the driving device is a motor, a speed reducing gear set and a valve rod gear are arranged between the upper opening and closing buffer frame and the driving frame, the valve rod gear is connected with the speed reducing gear set in a meshed way, the speed reducing gear set is connected with an output rod of the driving device, the valve rod is in threaded connection with the valve rod gear.
2. The electrically operated valve opening and closing protection device according to claim 1, wherein: the opening and closing limiting device comprises a limiting seat arranged on the support, an upper limiting sliding sleeve and a lower limiting sliding sleeve, wherein limiting screws are respectively arranged on the left side and the right side of the limiting seat, the upper limiting sliding sleeve and the lower limiting sliding sleeve are respectively in threaded connection with the corresponding limiting screws, an upper limiting contact is arranged on the upper limiting sliding sleeve, and a lower limiting contact is arranged on the lower limiting sliding sleeve.
3. The electrically operated valve opening and closing protection device according to claim 1, wherein: the upper opening and closing buffer frame is characterized in that a manual operation device is further arranged on one side of the speed reduction gear set above the upper opening and closing buffer frame, the manual operation device comprises a manual operation rod and a driving gear, the driving gear is connected with the speed reduction gear set in a clutchable mode, the operation rod can be lifted up and down and arranged on the upper opening and closing buffer frame, the driving gear is fixedly arranged on the outer side of the operation rod, a compression spring is arranged between the driving gear and the upper opening and closing buffer frame, the upper end of the operation rod extends out of the driving frame, a positioning clamping groove is formed in the upper portion of the driving frame, and a positioning ring is arranged on the positioning clamping groove.
4. The electrically operated valve opening and closing protection device according to claim 1, wherein: one side of the driving frame is also provided with a memory encoder, a debugging memory gear is rotatably arranged on the memory encoder through a rotating shaft, one side of the debugging memory gear is also provided with a tooth row which can lift up and down along with the valve rod, the tooth row is meshed with the debugging memory gear, and the memory encoder is respectively and electrically connected with the control circuit board.
5. The electric valve opening and closing protection device according to claim 4, wherein the position of the upper opening and closing buffer frame corresponding to the tooth row is fixedly provided with a tooth row positioning sliding sleeve, and the tooth row is penetrated in the tooth row positioning sliding sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710408657.5A CN107013734B (en) | 2017-06-02 | 2017-06-02 | Electric valve opening and closing protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710408657.5A CN107013734B (en) | 2017-06-02 | 2017-06-02 | Electric valve opening and closing protector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107013734A CN107013734A (en) | 2017-08-04 |
| CN107013734B true CN107013734B (en) | 2023-08-25 |
Family
ID=59451184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710408657.5A Active CN107013734B (en) | 2017-06-02 | 2017-06-02 | Electric valve opening and closing protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107013734B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107618649B (en) * | 2017-08-24 | 2020-01-14 | 北京航空航天大学 | Aerostat zero-pressure-difference square exhaust device |
| CN107651159B (en) * | 2017-08-24 | 2020-01-14 | 北京航空航天大学 | Aerostatics zero pressure differential circular exhaust apparatus |
| CN115325245B (en) * | 2022-10-13 | 2023-02-03 | 启东创开智能科技有限公司 | Valve execution structure for intelligent control |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1477714A1 (en) * | 2003-04-17 | 2004-11-17 | SAIA- Burgess GmbH Dresden | Actuator for valves |
| CN201096218Y (en) * | 2007-10-04 | 2008-08-06 | 林明祥 | Valve electric activator |
| CN201258999Y (en) * | 2008-08-01 | 2009-06-17 | 常州电站辅机总厂有限公司 | Adjustment straight-stroke valve actuator |
| CN104500824A (en) * | 2014-12-26 | 2015-04-08 | 沃尔达环境技术江苏股份有限公司 | Intelligent valve actuator |
| CN204784957U (en) * | 2015-07-09 | 2015-11-18 | 上海孚因流体动力设备有限公司 | A stop gear for keeping straight on journey electric actuator |
| CN106555903A (en) * | 2017-01-20 | 2017-04-05 | 李仁波 | A kind of actuator of valve |
| CN206770749U (en) * | 2017-06-02 | 2017-12-19 | 陈丽端 | Electrically operated valve opens and closes protection device |
-
2017
- 2017-06-02 CN CN201710408657.5A patent/CN107013734B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1477714A1 (en) * | 2003-04-17 | 2004-11-17 | SAIA- Burgess GmbH Dresden | Actuator for valves |
| CN201096218Y (en) * | 2007-10-04 | 2008-08-06 | 林明祥 | Valve electric activator |
| CN201258999Y (en) * | 2008-08-01 | 2009-06-17 | 常州电站辅机总厂有限公司 | Adjustment straight-stroke valve actuator |
| CN104500824A (en) * | 2014-12-26 | 2015-04-08 | 沃尔达环境技术江苏股份有限公司 | Intelligent valve actuator |
| CN204784957U (en) * | 2015-07-09 | 2015-11-18 | 上海孚因流体动力设备有限公司 | A stop gear for keeping straight on journey electric actuator |
| CN106555903A (en) * | 2017-01-20 | 2017-04-05 | 李仁波 | A kind of actuator of valve |
| CN206770749U (en) * | 2017-06-02 | 2017-12-19 | 陈丽端 | Electrically operated valve opens and closes protection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107013734A (en) | 2017-08-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107013734B (en) | Electric valve opening and closing protector | |
| CN201258999Y (en) | Adjustment straight-stroke valve actuator | |
| CN103322269B (en) | The electric actuator that cylinder type linear motor drives | |
| CN208451500U (en) | A kind of progressive knocking device of elastic conjunction | |
| KR20130118352A (en) | Hard seal plug valve | |
| CN105155480A (en) | Rotating rod type gate hoist | |
| CN206770749U (en) | Electrically operated valve opens and closes protection device | |
| CN112728150A (en) | Ball valve | |
| CN209430787U (en) | A kind of gate valve of heavy caliber low-pressure | |
| CN205207859U (en) | Pneumatic actuator | |
| CN206770726U (en) | Electrically operated valve opens and closes buffer unit | |
| CN206918360U (en) | Electrically operated valve opens and closes stopping means | |
| CN210370577U (en) | Well control blowout preventer | |
| JPS5926134Y2 (en) | Valve drive device | |
| CN109440740B (en) | Opening and closing device of sluice gate | |
| CN210264471U (en) | Rolling slats door safety stop device | |
| CN211715798U (en) | High-performance low-torque eccentric butterfly valve | |
| CN207891835U (en) | A kind of Novel water conservancy gate lifting gear | |
| CN205118267U (en) | Bellows stop valve with universal joint is shaft drive even | |
| CN205781078U (en) | A kind of four-way reversing globe valve of anti-shell capping | |
| CN206478236U (en) | A kind of electric check valve with position instruction | |
| CN206329564U (en) | A kind of overflow valve | |
| CN220770185U (en) | Low-torque long-life ball valve | |
| CN201082493Y (en) | Jigsaw welding center upright post lifting and lowering device | |
| CN219317656U (en) | Manual flat valve capable of being cut off safely |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |