CN202992332U - Numerical control rotary drive valve control device - Google Patents
Numerical control rotary drive valve control device Download PDFInfo
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- CN202992332U CN202992332U CN 201220640473 CN201220640473U CN202992332U CN 202992332 U CN202992332 U CN 202992332U CN 201220640473 CN201220640473 CN 201220640473 CN 201220640473 U CN201220640473 U CN 201220640473U CN 202992332 U CN202992332 U CN 202992332U
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Abstract
The utility model discloses a numerical control rotary drive valve control device which comprises a control circuit, a motor, a transmission mechanism and a housing, wherein the control circuit, the motor and the transmission mechanism are installed in the housing, the output end of the control circuit is connected to the control end of the motor in a communicational mode, and the motor is mechanically connected with and drives an external valve to move through the transmission mechanism. The numerical control rotary drive valve control device can be used for matching a ball valve which can rotate by 90 degrees and is large in circulation area and extremely small in water resistance and a butterfly valve which can rotate by 90 degrees. Due to the fact that a digital electric control drive device is adopted, high-precision control can be achieved. Therefore, the numerical control rotary drive valve control device can be widely used in various alternate current (AC)/direct current (DC) control systems. Meanwhile, the function of power-down automatic reset to close the valve can be achieved. Due to the fact that the motor interrupts a power supply in place, service life of the motor is effectively prolonged, and electric power waste is avoided. A centralized control system can conveniently control all parts and branches of the system, so that high-precision requirements of centralized automatic control for the whole system are met.
Description
Technical field
The utility model relates to a kind ofly can extensively be suitable for central air-conditioning system, heating system, plumbing, environmental protection, chemical industry, the fields such as industry, be used for switching fluid and two kinds of different operating states of Flow-rate adjustment, power supply can be for exchanging the digital controlled rotary actuating valve controlling device for doors of 24VAC or 230VAC and alternating direct-current 12 ~ 24VDC/AC.
Background technique
Existing central air-conditioning system, heating system, plumbing, environmental protection, chemical industry, the field small-sized electric two-way/three-way valve such as industry mainly contain 2 liang of large classes with mortor operated valve and modulating valve, are all not adopt Digital Control, are all analog control modes.1. the motor switch ball valve that drives with AC motor of the first, the switching path time is fixed, and moment of torsion is large, but can not be used for the direct current supply place, and does not have regulatory function.Can not have the spring reset function.2. the second is the electronic control ball valve that drives with direct current generator, by the circuit conversion, can realize exchanging 24VAC or 220VAC and alternating direct-current 12 ~ 24VDC/AC power supply, belong to the analog amount control mode, this switching path time is long, and simultaneously, the switching path time is unfixing, can change with the variation of load, control accuracy is low.For requiring the place that the switching path time is short and travel time is fixing, can not use this mortor operated valve.If realize spring automatic reset function, complicated in mechanical structure.The spring reset functional electric valve of this high pulling torque, domestic do not have producer to realize substantially.
The first: the electric switching valve that adopts AC motor to drive, the switching path time is short, and does not change with load variations, and travel time immobilizes, and only power consumption in rotation process of motor, after stopping, not power consumption, more energy-conservation.But the shortcoming of this mortor operated valve is, can only use Alternating Current Power Supply, can not be used for direct current, in the DC power-supply system that a lot of family expenses supply water, can not use.In the Flow-rate adjustment pipeline of medium-to-high grade field of employment was controlled, this mortor operated valve can not carry out accurate Flow-rate adjustment.
The second: be the motor-operated control valve that drives with direct current generator, this electronic control ball valve can change by power circuit, goes for exchanging 24VAC or 220VAC and direct current 24VDC.Can be used for switch and control and regulate and control, but due to direct current generator inherent characteristic---rotating speed and the inversely proportional relation of load of-output, the larger rotating speed of load is lower.The switching path time of this electronic control ball valve is long, reaches tens second time, is not suitable for switching path requirement short place.Simultaneously, in use, the switch formation time can change with the variation of load, has a strong impact on state of a control and the precision of this motor-operated control valve.This motor-operated control valve internal circuit all can only adopt analog control signal to control.Can not be fit to present network and the numerically controlled tendency of the day fully.
So above two kinds of electric controllers, the system that can not be applicable to control to require and control accuracy high, and can not satisfy in the DC control regulating system that various environmental protection and energy saving change up the pass soon.
Summary of the invention
In order to solve mortor operated valve and the driving motor-operated control valve of direct current generator of existing ac synchronous motor type, narrow application range, grow and change with load variations switching time, the shortcoming that control accuracy is low, the utility model provide the digital controlled rotary actuating valve that a kind of control accuracy is high, switching time is short, applied widely controlling device for doors.
In order to realize above-mentioned technical purpose, the technical solution of the utility model is, a kind of digital controlled rotary actuating valve controlling device for doors, comprise control circuit, motor, driving mechanism and shell, described control circuit, motor and driving mechanism are installed in shell, the output terminal of described control circuit communicates to connect the control end to motor, and described motor is by the driving mechanism mechanical connection and drive the external valve motion.
Described a kind of digital controlled rotary actuating valve controlling device for doors, described control circuit comprises power circuit, microprocessor control circuit and circuit for controlling motor, described power circuit provides electric power for microprocessor control circuit, circuit for controlling motor and motor, described microprocessor control circuit communicates to connect to circuit for controlling motor providing the Electric Machine Control instruction, and described circuit for controlling motor communicates to connect control end to motor to control electric machine rotation.
Described a kind of digital controlled rotary actuating valve controlling device for doors, described microprocessor control circuit comprises input discharge circuit and microprocessor, described input discharge circuit receives external signal and signal is inputed to microprocessor, and microprocessor outputs control signals to circuit for controlling motor.
Described a kind of digital controlled rotary actuating valve controlling device for doors, described circuit for controlling motor comprises the output discharge circuit, the input end of described output discharge circuit is connected to microprocessor control circuit to receive the control command signal, and the output terminal of output discharge circuit connects motor to send the Electric Machine Control instruction.
Described a kind of digital controlled rotary actuating valve controlling device for doors, described power circuit comprises control circuit power circuit and motor power circuit, and described control circuit power circuit is the control circuit power supply, and described motor power circuit is the motor power supply.
Described a kind of digital controlled rotary actuating valve controlling device for doors, described driving mechanism is reduction gear.
Described a kind of digital controlled rotary actuating valve controlling device for doors, described motor is brushless electric machine, actuating motor or stepper motor.
Described a kind of digital controlled rotary actuating valve controlling device for doors also comprises the manual handle for interim control valve.
Technique effect of the present utility model is, the utility model can be used to coordinate that 90 ° of rotations, circulation area are large, water resistance is minimum ball valve and the butterfly valve of 90 ° of rotations, adopt digital electronic accessory drive, realize highi degree of accuracy control, can be widely used in various alternating direct-current control system, simultaneously, can realize the automatically reset function of throttle down of power down.The motor outage that puts in place effectively extends electrical machinery life, avoids wasting electric power.Central control system can conveniently be controlled each part of system and branch road, is suitable for the high-precision requirement of the centralized automatic control of whole system.
The utility model is described in further detail below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is 3-D view after this drive unit is connected with ball valve;
Fig. 2 is this drive unit structure explosive view;
Fig. 3 is the insight structural map of this drive unit;
Fig. 4 is this drive unit base 3-D view and dissects tectonic maps;
Fig. 5 is electronic circuit plate portion, gear reduction part and motor position layout plan;
Fig. 6 is gearing structure figure;
Fig. 7 is 0-10VDC type circuit theory diagrams one
Fig. 8 is alternating-current switch type circuit theory diagrams two;
Fig. 9 is DC switch-type circuit theory diagrams three;
Figure 10 is this drive unit base Placement tectonic maps;
Figure 11 is the assembling structure figure of this drive unit base and flower cap.
Embodiment
The utility model is by the different interior power supply circuits of simple conversion, just can realize exchanging 24VAC ~ 220VAC, and the control system of alternating direct-current 12 ~ 24VAC and three kinds of different power supplies of direct current 5VDC-40VDC, simultaneously can realize that switching time is short, the switching path time is fixed, internal control all uses digital controlled signal to realize, can network with network and number system very easily.
The utility model comprises electronic circuit (power circuit, microprocessor control circuit and circuit for controlling motor), motor, reduction gear (comprising many group reduction gear, bearing pin) shell, and is connected to ball valve body.
This model utility the first switching mode control mode power supply unit feature one, be outside input 220VAC or 24VAC power supply signal, by the transformer pressure-reducing circuit of electronic circuit, 1 grade of current rectifying and wave filtering circuit, mu balanced circuit, the different VDC of output 2 tunnel are installed working power to this.The first switching mode control mode power supply unit feature two, be outside input 5VDC ~ 40VDC dc power signal, 2 grades of filter regulator circuits, export 2 tunnel different VDC and install working power to this, this 2 tunnel VDC is identical with the service voltage of the first control mode power supply unit feature one.
The first switching mode control mode is controlled and the motor driving feature, and by microprocessor single-chip microcomputer digital control circuit, discharge circuit to motor driving controling circuit, is controlled motor coil and got electric and dead electricity.By the pulse output control terminal of single-chip microcomputer digital control circuit IC chip, to motor driving controling circuit, motor is by this digital quantity requirement, stops after turning to this position by this digital quantity requirement exactly.Clockwise and anticlockwise is to be controlled by the positive and negative control end of single-chip microcomputer digital control circuit IC chip, outputs to motor driving controling circuit, and motor is by the positive and negative rotation of this requirement.Thereby realize motor forward, reverse, putting in place stops and locking function, realizes clockwise and anticlockwise and the clockwise and anticlockwise rotation angle of valve.Control the outage that puts in place of motor, the switching function of realizing driving valve and closing valve.Can set and regulate the switching path time of finally dispatching from the factory by the microprocessor scm software, after setting, the switching path time no longer changes with load variations.
This model utility the second adjustment type control mode power supply unit feature one, be that outside input power signal can be 7VAC ~ 24VAC or 5VDC ~ 40VDC, by the transformer pressure-reducing circuit of electronic circuit, 2 grades of current rectifying and wave filtering circuits, mu balanced circuit, the different VDC of output 2 tunnel are installed working power to this.
The second adjustment type control mode is controlled and the motor driving Partial Feature, the control signal that 1 road 0-10VDC of input and output is arranged respectively is used for controlling internal circuit, reaches the control requirement of external signal, realize electric machine rotation control, thereby realize the regulatory function of valve.By microprocessor single-chip microcomputer digital control circuit, requirement according to external input signal, control motor driving controling circuit, pulse output control terminal by single-chip microcomputer digital control circuit IC chip, to motor driving controling circuit, motor is by the digital quantity requirement of microprocessor single-chip microcomputer, stops after turning to the external signal desired position by this digital quantity requirement exactly.Clockwise and anticlockwise is to be controlled by the positive and negative control end of single-chip microcomputer digital control circuit IC chip, outputs to motor driving controling circuit, and motor is by the positive and negative rotation of this requirement.Thereby realize motor forward, counter-rotating, regulate, putting in place stops and locking function, realizes clockwise and anticlockwise and the clockwise and anticlockwise rotation angle of valve.Control the outage that puts in place of motor, realize opening valve and close valve, regulate aperture and reach the required control requirement of external signal.This second control mode is controlled with the motor-drive circuit part except the external input signal circuit is different, and microprocessor single chip machine controlling circuit, motor driving controling circuit, motor are all identical.
The rotation class valve that is used in combination with this digital electronic accessory drive device.Do not adopt general overall diameter and reducing ball valve as ball valve body.Connect bore in the situation that do not change ball valve, change the size of the both sides through-hole diameter of ball valve ball core, make ball valve reach different flow coefficients.Also can change the shape of ball valve core through hole, be the ball core of level band " V " type groove (angle of " V " type groove can from the 2-150 degree), thereby the Flow characteristics that changes ball valve be the Flow characteristics of linearity.Valve and driver adopt common being threaded, and be for convenience detach.Vidacare corp band handle, convenient when needs are manual, rotating valve.
The utility model, the system power supply of motor driving and control circuit adopts and separates 2 tunnel different Power supplies.The working power of 1 road electronic control circuit+5VDC, the power supply of the control electronic circuit that supply the utility model is all comprises the single-chip microcomputer digital control circuit, discharge circuit, the power supply of the control wirings such as motor driving controling circuit.1 tunnel motor driving special circuit is used for supplying with the power source special that motor works.
The first switching mode control mode can have two kinds of different power supply modes of 2 kinds of AC and DCs.Referring to Fig. 8, the power circuit of ac power supply method is respectively by opening the valve guide line and closing the power supply of valve guide line, through diode D6, D7 is to the transformer input end, after transformer TF1 output, after bridge rectification circuit D3 rectification, C2 filtering, divide to be clipped to mu balanced circuit U5, and intergrated circuit U3 and adjustable resistance VR1, from mu balanced circuit U5, C3 filtering, output voltage V CC, voltage VCC give respectively intergrated circuit U1, U2, the U3 power supply.Referring to Fig. 9, the power circuit of direct current supply mode is respectively by ON and the power supply of OFF end, via through diode D6, D7 is to 1 grade of mu balanced circuit U4, after output, through C2 filtering, divide to be clipped to mu balanced circuit U5, intergrated circuit U3 and adjustable resistance VR1, from mu balanced circuit U5, C3 filtering, output voltage V CC, voltage VCC gives respectively intergrated circuit U1, U2, U3 power supply.
The power supply of the second adjustment type control mode is referring to Fig. 7, by POWER and the input of GND end, through the D3 rectification, after resistance R 02, to mu balanced circuit U4, after C2 filtering, divide to be clipped to mu balanced circuit U5, intergrated circuit U3 and adjustable resistance VR1, from mu balanced circuit U5, C3 filtering, output voltage V CC, voltage VCC give respectively intergrated circuit U1, U2, the U3 power supply.
Microprocessor single-chip microcomputer U1 control circuit, microprocessor single-chip microcomputer U1 control circuit adopts external crystal oscillator X1, and direction control signal is through capacitor C 12 and resistance R 02, then through diode D8 and resistance R 03, to microprocessor single-chip microcomputer U1, signal is output after microprocessor single-chip microcomputer U1 software is processed.
Amplifier intergrated circuit U3 and peripheral resistance R 23, R12, R13, R16, R25, R22, R21, R16, R17, R6, R19, R14, R15, R24, R7, adjustable resistance VR1, D4, D5 is with microprocessor single-chip microcomputer U1 and its peripheral circuit R00, R01, R1, R18, R2, diode D1, these two-part form for after changing with external signal and self signal contrast, be input to microprocessor single-chip microcomputer U1 control circuit, be used for outputing to motor-drive circuit, control the electric machine rotation angle, play switch or regulatory function.
Motor driving controling circuit is by intergrated circuit U2, resistance R 8, R9, R10, R11, capacitor C 8, C9 forms, 4 control signals are directly inputted to intergrated circuit U2 by the digital controlled signal of microprocessor single-chip microcomputer U1, then output to motor by intergrated circuit U2 operation amplifier, and final drive motor rotates.
By reference to the accompanying drawings 1,2,5,7,8,9,10: the utility model comprises case 4, manual handle 5, motor 12, cam 10, circuit board A, middle connecting plate 9, base 3, rotating shaft 6, middle cover 8, driven gear 10, flower cap 2, motor pad 13, motor gear 14, fixed pin shaft 15, center tooth wheels.Control motor 12 by the hardware and software on circuit board A and rotate, by motor gear 12, the transmission of center tooth wheels drives rotating shaft 6 and rotates, and finally drives ball valve 1 work.The various working staties of motor are controlled by the micro treatment control system on circuit board component A.
Wherein circuit board component A comprises five major parts such as power supply unit, microprocessor single-chip microcomputer U1 control circuit, amplifier intergrated circuit, feeder loop and motor driving controling circuit and combines.Can be divided into three different circuit: (1) alternating-current switch type power supply unit comprises diode D6, D7, and after transformer TF1 step-down, bridge rectification D3, C2 filtering, then by mu balanced circuit U5 voltage stabilizing, C3 filtering.(2) the DC switch-type power supply unit comprises diode D6, D7, C2 filtering, mu balanced circuit U4, mu balanced circuit U5, C3 filtering.(3) 0-10VDC type power supply unit is by diode D3 rectification, and resistance R 02 step-down to mu balanced circuit U4, after C2 filtering, divides to be clipped to mu balanced circuit U5 intergrated circuit U3, step-down respectively, C3 filtering.These three kinds of different circuit can obtain one group of identical 2 different magnitude of voltage in mu balanced circuit U5 front and back.Give whole circuitry power supply.
Amplifier intergrated circuit U3 on circuit board component (A) can receive external signal, amplifier intergrated circuit U3 and peripheral resistance R 23, R12, R13, R16, R25, R22, R21, R16, R17, R6, R19, R14, R15, R24, R7, adjustable resistance VR1, D4, D5, with microprocessor single-chip microcomputer U1 and its peripheral circuit R00, R01, R1, R18, R2, diode D1, these two-part form for after changing with external signal and self signal contrast, are input to microprocessor single-chip microcomputer U1 control circuit.After microprocessor single-chip microcomputer U1 control circuit receives, after processing by software, press the internal processes step and carry out.
Microprocessor single-chip microcomputer U1 control circuit part on circuit board component A, it is the central processing unit of this device core, microprocessor single-chip microcomputer U1 control circuit adopts external crystal oscillator X1, direction control signal is through capacitor C 12 and resistance R 02, again through diode D8 and resistance R 03, to microprocessor single-chip microcomputer U1, signal is output after microprocessor single-chip microcomputer U1 software is processed.The operation of all working is all to carry out by the in house software of microprocessor, this software program, and software program needs burned microprocessor U1 separately.
The motor driving controling circuit of circuit board component A is by intergrated circuit U2, resistance R 8, R9, R10, R11, capacitor C 8, C9 forms, and 4 digital signals are directly inputted to intergrated circuit U2 by the digital controlled signal of microprocessor single-chip microcomputer U1, output to motor by intergrated circuit U2 again, speed, clockwise and anticlockwise and the rotation angle of final drive motor.By motor gear 14, the transmission of center tooth wheels drives rotating shaft 6 and rotates, and finally drives ball valve 1 work.The various working staties of motor are controlled by the microprocessor internal programming instruction and are carried out.
by reference to the accompanying drawings 1, 2, 3, 4, 6: motor 12 and reduction gears mechanism are arranged on base 3 bottoms, the above uses middle connecting plate 9, reduction gears mechanism is fixed on base 3 bottoms, motor 12 is installed on middle connecting plate 9, motor 12 rotates, motor gear 14 drives the first gear 16 and rotates, the second gear 21 and the first gear 16, the 3rd gear 17 and the 4th gear 25, the 5th gear 18 and the 6th gear 32 are the single piece that are connected, the second gear 21 drives the 7th gear 23 and rotates, octadentate wheel 22 drives the 3rd gear 17 and rotates, the 4th gear 25 drives the 5th gear 18 and rotates, the 6th gear 32 drives the 9th gear 7 initiatively, driving rotating shaft 6 by middle cover 8 again rotates, driving at last ball valve rotates.
By reference to the accompanying drawings 1,2,3,10,11: first the accessory 19 with base 3 bottoms takes off, and flower cap 2 is put into base 3, with accessory 19 firm welding of supersonic welder with base 3 and base 3 bottoms.Just can guarantee that drive unit and valve firmly couple together.
Claims (8)
1. digital controlled rotary actuating valve controlling device for doors, it is characterized in that, comprise control circuit, motor, driving mechanism and shell, described control circuit, motor and driving mechanism are installed in shell, the output terminal of described control circuit communicates to connect the control end to motor, and described motor is by the driving mechanism mechanical connection and drive the external valve motion.
2. a kind of digital controlled rotary actuating valve controlling device for doors according to claim 1, it is characterized in that, described control circuit comprises power circuit, microprocessor control circuit and circuit for controlling motor, described power circuit provides electric power for microprocessor control circuit, circuit for controlling motor and motor, described microprocessor control circuit communicates to connect to circuit for controlling motor providing the Electric Machine Control instruction, and described circuit for controlling motor communicates to connect control end to motor to control electric machine rotation.
3. a kind of digital controlled rotary actuating valve controlling device for doors according to claim 2, it is characterized in that, described microprocessor control circuit comprises input discharge circuit and microprocessor, described input discharge circuit receives external signal and signal is inputed to microprocessor, and microprocessor outputs control signals to circuit for controlling motor.
4. a kind of digital controlled rotary actuating valve controlling device for doors according to claim 2, it is characterized in that, described circuit for controlling motor comprises the output discharge circuit, the input end of described output discharge circuit is connected to microprocessor control circuit to receive the control command signal, and the output terminal of output discharge circuit connects motor to send the Electric Machine Control instruction.
5. a kind of digital controlled rotary actuating valve controlling device for doors according to claim 1, it is characterized in that, described power circuit comprises control circuit power circuit and motor power circuit, and described control circuit power circuit is the control circuit power supply, and described motor power circuit is the motor power supply.
6. a kind of digital controlled rotary actuating valve controlling device for doors according to claim 1, is characterized in that, described driving mechanism is reduction gear.
7. a kind of digital controlled rotary actuating valve controlling device for doors according to claim 1, is characterized in that, described motor is brushless electric machine, actuating motor or stepper motor.
8. a kind of digital controlled rotary actuating valve controlling device for doors according to claim 1, is characterized in that, also comprises the manual handle for interim control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220640473 CN202992332U (en) | 2012-11-28 | 2012-11-28 | Numerical control rotary drive valve control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220640473 CN202992332U (en) | 2012-11-28 | 2012-11-28 | Numerical control rotary drive valve control device |
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| Publication Number | Publication Date |
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| CN202992332U true CN202992332U (en) | 2013-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220640473 Expired - Lifetime CN202992332U (en) | 2012-11-28 | 2012-11-28 | Numerical control rotary drive valve control device |
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| CN (1) | CN202992332U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015688A (en) * | 2016-07-11 | 2016-10-12 | 乐清市奥格节能自控系统有限公司 | Electric actuator with universal connection function |
| CN107339495A (en) * | 2017-08-14 | 2017-11-10 | 珠海格力电器股份有限公司 | Regulating valve control method and device and air conditioner |
| CN110159826A (en) * | 2019-06-29 | 2019-08-23 | 李方志 | A kind of integral structure motor-driven valve of novel valve body and motor |
| WO2020253480A1 (en) * | 2019-06-21 | 2020-12-24 | 浙江三花制冷集团有限公司 | Electric valve |
| CN112145787A (en) * | 2020-09-10 | 2020-12-29 | 武汉艾络特科技有限公司 | Valve core displacement variable control device of construction machinery |
| CN113864510A (en) * | 2021-09-03 | 2021-12-31 | 浙江恒森实业集团有限公司 | Valve actuator mechanism convenient to operate |
-
2012
- 2012-11-28 CN CN 201220640473 patent/CN202992332U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015688A (en) * | 2016-07-11 | 2016-10-12 | 乐清市奥格节能自控系统有限公司 | Electric actuator with universal connection function |
| CN106015688B (en) * | 2016-07-11 | 2018-06-26 | 乐清市奥格节能自控系统有限公司 | The Electric Actuator of omnipotent connection |
| CN107339495A (en) * | 2017-08-14 | 2017-11-10 | 珠海格力电器股份有限公司 | Regulating valve control method and device and air conditioner |
| CN107339495B (en) * | 2017-08-14 | 2019-05-10 | 珠海格力电器股份有限公司 | Regulating valve control method and device and air conditioner |
| WO2020253480A1 (en) * | 2019-06-21 | 2020-12-24 | 浙江三花制冷集团有限公司 | Electric valve |
| US11859728B2 (en) | 2019-06-21 | 2024-01-02 | Zhejiang Sanhua Commercial Refrigeration Controls Co., Ltd. | Electric valve |
| CN110159826A (en) * | 2019-06-29 | 2019-08-23 | 李方志 | A kind of integral structure motor-driven valve of novel valve body and motor |
| CN112145787A (en) * | 2020-09-10 | 2020-12-29 | 武汉艾络特科技有限公司 | Valve core displacement variable control device of construction machinery |
| CN113864510A (en) * | 2021-09-03 | 2021-12-31 | 浙江恒森实业集团有限公司 | Valve actuator mechanism convenient to operate |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Granted publication date: 20130612 |