CN110131435B - Electric plug valve - Google Patents
Electric plug valve Download PDFInfo
- Publication number
- CN110131435B CN110131435B CN201910473641.1A CN201910473641A CN110131435B CN 110131435 B CN110131435 B CN 110131435B CN 201910473641 A CN201910473641 A CN 201910473641A CN 110131435 B CN110131435 B CN 110131435B
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- Prior art keywords
- valve
- groove
- valve core
- positioning
- end cover
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Classifications
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- 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
- F16K31/041—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves
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- 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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/04—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfaces; Packings therefor
- F16K5/0442—Spindles and actuating means
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- 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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
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- 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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
- F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
- F16K5/16—Special arrangements for separating the sealing faces or for pressing them together for plugs with conical surfaces
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrically Driven Valve-Operating Means (AREA)
- Multiple-Way Valves (AREA)
Abstract
The invention discloses an electric plug valve, which comprises a valve casing, wherein an inlet is formed in the left side of the valve casing, an outlet is formed in the right side of the valve casing, an upper end cover is arranged at an opening at the upper end of the valve casing, and a lower end cover is arranged at an opening at the lower end of the valve casing; a valve core used for controlling the on-off of the inlet and the outlet is arranged in the valve shell, the valve core is in a round table shape and is provided with a communication hole used for communicating the inlet and the outlet, and a valve seat surface matched with the valve core is arranged in the valve shell; a threaded hole is formed in the upper end cover along the vertical direction, a push rod is connected to the threaded hole in a threaded manner, and a motor which is used for driving the push rod to rotate and can move up and down is mounted on the upper end cover; the upper end of the valve core is provided with a cylindrical bulge extending towards the upper end cover, the upper end of the cylindrical bulge is provided with a rotating groove, and the lower end of the ejector rod is provided with a rotating block which is rotatably connected in the rotating groove; the electric plug valve is simple in structure and long in service life.
Description
Technical Field
The invention relates to the technical field of valves, in particular to an electric plug valve.
Background
The plug valve is a rotary valve in a closing part or a plunger shape, and the opening or the closing of the valve is realized by rotating 90 degrees to enable a passage port on the plug to be communicated with or separated from a passage port on the valve body. The plug valve has the disadvantages that the sealing surface is easy to abrade in the opening and closing process of the conical plug valve, so that the sealing surface is easy to leak, and the service life is short.
Disclosure of Invention
Technical problem to be solved
The invention aims to provide an electric plug valve which is simple in structure and long in service life.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: an electric plug valve comprises a valve casing, wherein an inlet is formed in the left side of the valve casing, an outlet is formed in the right side of the valve casing, an upper end cover is arranged at an opening at the upper end of the valve casing, and a lower end cover is arranged at an opening at the lower end of the valve casing; a valve core used for controlling the on-off of the inlet and the outlet is arranged in the valve shell, the valve core is in a round table shape and is provided with a communication hole used for communicating the inlet and the outlet, and a valve seat surface matched with the valve core is arranged in the valve shell; a threaded hole is formed in the upper end cover along the vertical direction, a push rod is connected with the threaded hole in a threaded manner, and a motor which is used for driving the push rod to rotate and can move up and down is mounted on the upper end cover; the upper end of the valve core is provided with a cylindrical bulge extending towards the upper end cover, the upper end of the cylindrical bulge is provided with a rotating groove, and the lower end of the ejector rod is provided with a rotating block which is rotatably connected in the rotating groove; a first positioning hole and a second positioning hole which are opposite in position are arranged on the inner circumferential side surface of the side of the rotating groove along the radial direction of the rotating groove, a first positioning block is connected in the first positioning hole in a sliding mode, and a second positioning block is connected in the second positioning hole in a sliding mode; a spring groove is formed in the circumferential side face of the rotating block along the radial direction of the rotating block, and a marble and a first spring for forcing the marble to be separated from the spring groove are arranged in the spring groove; the center lines of the first positioning hole and the second positioning hole and the center line of the spring slot are in the same plane; an annular cutting groove is formed in the side face, close to the inner circumference of the upper end cover, of the valve shell, and an included angle between two ends of the annular cutting groove is 180 degrees; when the first positioning hole or the second positioning hole is completely communicated with the annular cutting groove, the corresponding first positioning block or second positioning block is pressed in the annular cutting groove under the action of the marble and the first spring, and the rotating block drives the valve core to rotate through the marble; a first inclined plane matched with the first positioning block or the second positioning block is arranged at the left end of the annular cutting groove, and a second inclined plane matched with the first positioning block or the second positioning block is arranged at the upper end of the annular cutting groove; third inclined planes matched with the marbles are arranged at the first positioning hole and the second positioning hole in the rotating groove;
the lower end of the valve core is provided with a positioning rod which is connected in the lower end cover in a sliding manner along the vertical direction; four vertical sliding grooves are uniformly arranged on the side surface of the inner circumference of the valve shell close to the lower end cover at intervals by taking the positioning rod as the center of a circle; the circumferential side surface of the valve core close to the lower end is provided with four rotation stopping lugs which are connected in the vertical sliding groove in a sliding manner; a second spring used for forcing the valve core to move upwards is arranged between the lower end cover and the lower end of the valve core in the valve shell;
a plurality of vertical ratchet grooves are uniformly arranged on the inner circumferential side surface below the vertical sliding groove in the valve shell at intervals by taking the positioning rod as the circle center; and a pawl matched with the vertical ratchet groove and used for preventing the valve core from reversely rotating and a torsion spring used for forcing the pawl to extend into the vertical ratchet groove are arranged at the position, close to the circumference, on the lower end surface of the valve core.
In a further technical scheme, the upper end of the ejector rod is provided with a shaft hole and a key groove communicated with the shaft hole along the vertical direction, and an output shaft of the motor is inserted into the shaft hole and is provided with a pin block in sliding connection with the key groove.
(III) advantageous effects
Compared with the prior art, the technical scheme of the invention has the following advantages:
the valve core is separated from the valve seat surface in the opening and closing processes, so that the abrasion between the valve core and the valve seat surface can be avoided, and the service life of the whole electric plug valve is prolonged.
Drawings
FIG. 1 is a front sectional view of an electric faucet valve of the embodiment in an assembled closed state;
FIG. 2 is a first major cross-sectional view of the electric faucet valve of the embodiment during assembly and opening;
FIG. 3 is a second major cross-sectional view of the embodiment during assembly and opening of the electric faucet valve;
FIG. 4 is a cross-sectional view of the lower end of the valve core of the embodiment shown in engagement with the valve housing;
FIG. 5 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 6 is a cross-sectional view taken at B-B of FIG. 1;
FIG. 7 is a cross-sectional view taken at C-C of FIG. 3;
FIG. 8 is a cross-sectional view taken at D-D of FIG. 3;
fig. 9 is a schematic view showing a partially assembled structure of the electric plug valve according to the embodiment.
Detailed Description
Referring to fig. 1-9, an electric plug valve includes a valve housing 1 having an inlet 101 at the left side and an outlet 102 at the right side, an upper end cap 2 is disposed at an upper end opening of the valve housing 1, and a lower end cap 3 is disposed at a lower end opening; a valve core 4 for controlling the on-off of the inlet 101 and the outlet 102 is arranged in the valve casing 1, the valve core 4 is in a circular truncated cone shape and is provided with a communication hole 401 for communicating the inlet 101 and the outlet 102, and a valve seat surface 103 matched with the valve core 4 is arranged in the valve casing 1; be equipped with screw hole 201 along vertical direction in the upper end cover 2, screw hole 201 female connection has ejector pin 5, install on the upper end cover 2 and be used for driving ejector pin 5 rotatory and motor 6 that can the up-and-down motion, here the upper end of ejector pin 5 along vertical direction be equipped with shaft hole 501 and with the keyway 502 of shaft hole 501 intercommunication, the output shaft of motor 6 insert in the shaft hole 501, and be equipped with keyway 502 sliding connection's round pin piece 7. The upper end of the valve core 4 is provided with a cylindrical protrusion 8 extending towards the upper end cover 2, the upper end of the cylindrical protrusion 8 is provided with a rotating groove 801, and the lower end of the ejector rod 5 is provided with a rotating block 11 rotatably connected in the rotating groove 801; a first positioning hole 802 and a second positioning hole 803 which are opposite in position are arranged on the inner circumferential side surface of the rotating groove 801 side along the radial direction of the rotating groove, a first positioning block 9 is connected in the first positioning hole 802 in a sliding manner, and a second positioning block 10 is connected in the second positioning hole 803 in a sliding manner; the circumferential side surface of the rotating block 11 is provided with a spring groove 1101 along the radial direction thereof, and a ball 12 and a first spring 13 for forcing the ball 12 out of the spring groove 1101 are arranged in the spring groove 1101. The center lines of the first positioning hole 802 and the second positioning hole 803 are in the same plane with the center line of the spring slot 1101; an annular cutting groove 104 is formed in the valve shell 1 on the inner circumferential side surface close to the upper end cover 2, and the included angle between two ends of the annular cutting groove 104 is 180 degrees; when the first positioning hole 802 or the second positioning hole 803 is completely communicated with the annular cutting groove 104, the corresponding first positioning block 9 or second positioning block 10 is pressed tightly in the annular cutting groove 104 under the action of the marble 12 and the first spring 13, and at this time, the rotating block 11 drives the valve core 4 to rotate through the marble 12; a first inclined surface 105 matched with the first positioning block 9 or the second positioning block 10 is arranged at the left end of the annular cutting groove 104, and a second inclined surface 106 matched with the first positioning block 9 or the second positioning block 10 is arranged at the upper end of the annular cutting groove 104; third inclined surfaces 804 matched with the marbles 12 are arranged at the first positioning hole 802 and the second positioning hole 803 in the rotating groove 801.
A positioning rod 14 which is connected in the lower end cover 3 in a sliding manner is arranged at the lower end of the valve core 4 along the vertical direction; four vertical sliding grooves 107 are uniformly arranged on the inner circumferential side surface close to the lower end cover 3 in the valve shell 1 at intervals by taking the positioning rod 14 as the center of a circle; the valve core 4 is provided with four rotation stopping lugs 15 which are connected in the vertical sliding groove 107 in a sliding way on the circumferential side surface close to the lower end; a second spring 16 for forcing the valve core 4 upward is provided in the valve housing 1 between the lower end cap 3 and the lower end of the valve core 4.
A plurality of vertical ratchet grooves 108 are uniformly arranged on the inner circumferential side surface below the vertical sliding groove 107 in the valve housing 1 at intervals by taking the positioning rod 14 as the center of a circle; a pawl 17 engaged with the vertical ratchet groove 108 for preventing the reverse rotation of the valve core 4 and a torsion spring 18 for forcing the pawl 17 to protrude into the vertical ratchet groove 108 are provided on the lower end surface of the valve core 4 at a position close to the circumference.
When this electronic plug valve is opened in needs, at first control motor 6 drives ejector pin 5 clockwise rotation, and downstream under the effect of screw hole 201 during ejector pin 5 clockwise rotation, and then impel case 4 downstream and compress second spring 16, owing to the cooperation of only changeing lug 15 and vertical spout 107, case 4 can not take place to rotate. As shown in fig. 2, 5 and 6, when the first positioning hole 802 is completely communicated with the annular slot 104, the rotation-stopping protrusion 15 just disengages from the lower end of the vertical slot, at this time, the first positioning block 9 is pressed in the annular slot 104 under the action of the marble 12 and the first spring 13, so that the marble 12 is located between the spring slot 1101 and the first positioning hole 802, as shown in fig. 3, 7 and 8, the motor 6 continues to drive the push rod 5 to rotate 90 ° clockwise and stop, and further, the rotating block 11 and the marble 12 drive the valve core 4 to rotate 90 ° synchronously, at this time, the communicating hole 401 communicates the inlet 101 with the outlet 102; then the control motor 6 drives the mandril 5 to rotate anticlockwise, the mandril 5 moves upwards under the action of the threaded hole 201 when rotating anticlockwise, and the valve core 4 also moves upwards under the action of the second spring 16; when the rotating block 11 rotates counterclockwise, the ball 12 will not drive the valve core 4 to rotate under the action of the third inclined plane 804. In addition, the valve core 4 is not rotated counterclockwise by the pawl 17 and the vertical ratchet groove 108. When the valve core 4 moves upwards, the first positioning block 9 is separated from the annular cutting groove 104 through the second inclined surface 106 and enters the first positioning hole 802, at this time, the rotation stopping projection 15 on the valve core 4 also enters the vertical sliding groove 107, the motor 6 continues to drive the mandril 5 to rotate anticlockwise, and the valve core 4 continues to move upwards under the action of the second spring 16 until the valve core 4 is pressed on the valve seat surface 103. The second positioning block 10 is always located in the second positioning hole 803 in the above operation process.
When the electric plug valve needs to be closed on the basis of the opening, the motor 6 is firstly controlled to drive the ejector rod 5 to rotate clockwise, the ejector rod 5 moves downwards under the action of the threaded hole 201 during clockwise rotation, the valve core 4 is further pushed to move downwards and the second spring 16 is compressed, and the valve core 4 cannot rotate due to the matching effect of the rotation stopping lug 15 and the vertical sliding groove 107. When the first positioning hole 802 is completely communicated with the annular slot 104, the rotation stopping lug 15 is just disengaged from the lower end of the vertical slot, and the first positioning block 9 is pressed in the annular slot 104 under the action of the ball 12 and the first spring 13, so that the ball 12 is positioned between the spring slot 1101 and the first positioning hole 802. The motor 6 continues to drive the push rod 5 to rotate 90 degrees clockwise and stop, and then the rotating block 11 and the marble 12 drive the valve core 4 to rotate 90 degrees synchronously, at this time, the communication hole 401 is not communicated with the inlet 101 and the outlet 102 any more, the first positioning block 9 is separated from the annular cutting groove 104 under the action of the first inclined plane and enters the first positioning hole 802, the second positioning hole 803 is completely communicated with the annular cutting groove 104, and the second positioning block 10 is pressed in the annular cutting groove 104 under the action of the marble 12 and the first spring 13, so that the marble 12 is located between the spring groove 1101 and the second positioning hole 803. Then the control motor 6 drives the mandril 5 to rotate anticlockwise, the mandril 5 moves upwards under the action of the threaded hole 201 when rotating anticlockwise, and the valve core 4 also moves upwards under the action of the second spring 16; when the rotating block 11 rotates counterclockwise, the ball 12 will not drive the valve core 4 to rotate under the action of the third inclined plane 804. In addition, the valve core 4 is not rotated counterclockwise by the pawl 17 and the vertical ratchet groove 108. When the valve core 4 moves upwards, the second positioning block 10 is separated from the annular cutting groove 104 and enters the second positioning hole 803 under the action of the second inclined surface 106, at this time, the rotation stopping lug 15 on the valve core 4 also enters the vertical sliding groove 107, the motor 6 continues to drive the push rod 5 to rotate anticlockwise, and the valve core 4 continues to move upwards under the action of the second spring 16 until being pressed on the valve seat surface 103. To this end, the electric plug valve rotates the valve element 4 by 180 ° in total during opening and closing. The valve core 4 is again rotated through a total of 180 ° during the reopening and closing of the electric plug valve. The valve core 4 of the electric plug valve is separated from the valve seat surface 103 in the opening and closing processes, so that the abrasion between the valve core 4 and the valve seat surface 103 can be avoided, and the service life of the whole electric plug valve is prolonged.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (2)
1. An electric plug valve comprises a valve casing with an inlet on the left side and an outlet on the right side, and is characterized in that an upper end cover is arranged at an upper end opening of the valve casing, and a lower end cover is arranged at a lower end opening of the valve casing; a valve core used for controlling the on-off of the inlet and the outlet is arranged in the valve shell, the valve core is in a round table shape and is provided with a communication hole used for communicating the inlet and the outlet, and a valve seat surface matched with the valve core is arranged in the valve shell; a threaded hole is formed in the upper end cover along the vertical direction, a push rod is connected with the threaded hole in a threaded manner, and a motor which is used for driving the push rod to rotate and can move up and down is mounted on the upper end cover; the upper end of the valve core is provided with a cylindrical bulge extending towards the upper end cover, the upper end of the cylindrical bulge is provided with a rotating groove, and the lower end of the ejector rod is provided with a rotating block which is rotatably connected in the rotating groove; a first positioning hole and a second positioning hole which are opposite in position are arranged on the inner circumferential side surface of the side of the rotating groove along the radial direction of the rotating groove, a first positioning block is connected in the first positioning hole in a sliding mode, and a second positioning block is connected in the second positioning hole in a sliding mode; a spring groove is formed in the circumferential side face of the rotating block along the radial direction of the rotating block, and a marble and a first spring for forcing the marble to be separated from the spring groove are arranged in the spring groove; the center lines of the first positioning hole and the second positioning hole and the center line of the spring slot are in the same plane; an annular cutting groove is formed in the side face, close to the inner circumference of the upper end cover, of the valve shell, and an included angle between two ends of the annular cutting groove is 180 degrees; when the first positioning hole or the second positioning hole is completely communicated with the annular cutting groove, the corresponding first positioning block or second positioning block is pressed in the annular cutting groove under the action of the marble and the first spring, and the rotating block drives the valve core to rotate through the marble; a first inclined plane matched with the first positioning block or the second positioning block is arranged at the left end of the annular cutting groove, and a second inclined plane matched with the first positioning block or the second positioning block is arranged at the upper end of the annular cutting groove; third inclined planes matched with the marbles are arranged at the first positioning hole and the second positioning hole in the rotating groove;
the lower end of the valve core is provided with a positioning rod which is connected in the lower end cover in a sliding manner along the vertical direction; four vertical sliding grooves are uniformly arranged on the side surface of the inner circumference of the valve shell close to the lower end cover at intervals by taking the positioning rod as the center of a circle; the circumferential side surface of the valve core close to the lower end is provided with four rotation stopping lugs which are connected in the vertical sliding groove in a sliding manner; a second spring used for forcing the valve core to move upwards is arranged between the lower end cover and the lower end of the valve core in the valve shell;
a plurality of vertical ratchet grooves are uniformly arranged on the inner circumferential side surface below the vertical sliding groove in the valve shell at intervals by taking the positioning rod as the circle center; and a pawl matched with the vertical ratchet groove and used for preventing the valve core from reversely rotating and a torsion spring used for forcing the pawl to extend into the vertical ratchet groove are arranged at the position, close to the circumference, on the lower end surface of the valve core.
2. The electric plug valve according to claim 1, wherein the upper end of the push rod is provided with a shaft hole and a key groove communicated with the shaft hole in the vertical direction, the output shaft of the motor is inserted into the shaft hole, and a pin block slidably connected with the key groove is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910473641.1A CN110131435B (en) | 2019-06-01 | 2019-06-01 | Electric plug valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910473641.1A CN110131435B (en) | 2019-06-01 | 2019-06-01 | Electric plug valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110131435A CN110131435A (en) | 2019-08-16 |
| CN110131435B true CN110131435B (en) | 2020-09-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910473641.1A Active CN110131435B (en) | 2019-06-01 | 2019-06-01 | Electric plug valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN110131435B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112096897A (en) * | 2020-09-12 | 2020-12-18 | 宁波源码智能机械科技有限公司 | Plug valve |
| CN114151566A (en) * | 2021-12-10 | 2022-03-08 | 江苏优特莫森机械有限公司 | Plug valve for petroleum drilling and production and use method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4073468A (en) * | 1976-09-16 | 1978-02-14 | Erwin Robert L | Rotary plug valve |
| CN2783067Y (en) * | 2004-11-25 | 2006-05-24 | 江汉大学 | Ceramic coated seal plug valve |
| CN202418636U (en) * | 2012-01-17 | 2012-09-05 | 浙江天信仪表科技有限公司 | IC (integrated circuit) card flow control valve |
| CN204755986U (en) * | 2015-06-08 | 2015-11-11 | 江苏咸中石油机械有限公司 | Heavy -calibre heavy pressure plug valve |
| CN205715749U (en) * | 2016-05-03 | 2016-11-23 | 黄石兴阀科技有限公司 | Magnetically-actuated formula plug valve |
| CN106763856A (en) * | 2017-02-22 | 2017-05-31 | 李祥庆 | One kind is without abradable seal plug valve |
| CN107023685A (en) * | 2016-02-01 | 2017-08-08 | 浙江盾安人工环境股份有限公司 | Plug valve |
-
2019
- 2019-06-01 CN CN201910473641.1A patent/CN110131435B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4073468A (en) * | 1976-09-16 | 1978-02-14 | Erwin Robert L | Rotary plug valve |
| CN2783067Y (en) * | 2004-11-25 | 2006-05-24 | 江汉大学 | Ceramic coated seal plug valve |
| CN202418636U (en) * | 2012-01-17 | 2012-09-05 | 浙江天信仪表科技有限公司 | IC (integrated circuit) card flow control valve |
| CN204755986U (en) * | 2015-06-08 | 2015-11-11 | 江苏咸中石油机械有限公司 | Heavy -calibre heavy pressure plug valve |
| CN107023685A (en) * | 2016-02-01 | 2017-08-08 | 浙江盾安人工环境股份有限公司 | Plug valve |
| CN205715749U (en) * | 2016-05-03 | 2016-11-23 | 黄石兴阀科技有限公司 | Magnetically-actuated formula plug valve |
| CN106763856A (en) * | 2017-02-22 | 2017-05-31 | 李祥庆 | One kind is without abradable seal plug valve |
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| Publication number | Publication date |
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| CN110131435A (en) | 2019-08-16 |
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Effective date of registration: 20200721 Address after: Zhoushan Road, Dongou Industrial Zone, Oubei New District, Yongjia County, Jiaxing City, Zhejiang Province Applicant after: LIXIN VALVE GROUP Co.,Ltd. Address before: 315000 Zhejiang city of Ningbo province high tech Zone Juxian Road No. 555 building 035 room 18-1 No. 013 station Applicant before: NINGBO WENZE ELECTROMECHANICAL TECHNOLOGY DEVELOPMENT Co.,Ltd. |
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Address after: 325102 Zhoushan Road, Dong'ou Industrial Zone, Oubei City New District, Yongjia County, Wenzhou City, Zhejiang Province Applicant after: LIXIN VALVE GROUP Co.,Ltd. Address before: Zhoushan Road, Dongou Industrial Zone, Oubei New District, Yongjia County, Jiaxing City, Zhejiang Province Applicant before: LIXIN VALVE GROUP Co.,Ltd. |
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Denomination of invention: An electric plug valve Effective date of registration: 20230620 Granted publication date: 20200901 Pledgee: Agricultural Bank of China Limited Yongjia County sub branch Pledgor: LIXIN VALVE GROUP CO.,LTD. Registration number: Y2023330001238 |
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