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Manual-automatic integrated opening valve actuator

An actuator and integrated technology, applied in the direction of valve details, valve devices, valve operation/release devices, etc., can solve the problems of AC valves not suitable for mobile operations, valve openings that cannot be adjusted, and control accuracy deviations, etc., to achieve increased Effects of rotation torque, deviation avoidance, and accuracy improvement

Pending Publication Date: 2019-10-15
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the opening of most valves cannot be adjusted, and the torque of a small number of valves that can adjust the opening is too small, most of which are less than 1N·m. Only a few valves using AC can reach more than 1N·m, but usually The equipment for mobile operations is powered by direct current, so AC valves are not suitable for equipment requirements for mobile operations
In addition, the control accuracy of the valve will deviate after long-term use; therefore, there is an urgent need for a valve with DC power supply, large torque, adjustable opening, and calibrated accuracy.

Method used

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  • Manual-automatic integrated opening valve actuator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Embodiment 1, automatic adjustment of valve opening

[0046] When the operator sends an instruction of "open 60°" through the signal input terminal, the single-chip microcomputer U first accurately judges the current opening degree of the valve through the resistance value of the sliding rheostat RV. If the opening is less than 60°, the P1.1 serial port of the single-chip microcomputer U sends a high-level signal, and the base of the NPN transistor Q1 conducts after receiving the high-level signal output by the single-chip microcomputer P1.1, and the current It can flow from the collector to the emitter and then to the relay RL1, and then drive the relay RL1 to work, so that the double poles of the double-pole double-throw switch SW are biased towards terminals 2 and 4. At the same time, the P1.0 serial port of the single-chip microcomputer U sends a high-level signal, and the base of the NPN transistor Q3 conducts after receiving the high-level signal output by the sin...

Embodiment 2

[0048] Embodiment 2, manual adjustment of valve opening

[0049] When it is necessary to manually adjust the valve opening, the operator first presses the button, and when the first polished rod is squeezed by an external force, the upper gear of the third gear is separated from the first gear and meshes with the fourth gear at the same time. The operator then rotates the handle to drive the fourth gear to rotate. Since the upper gear of the third gear meshes with the fourth gear and the lower gear meshes with the second gear, when the fourth gear is rotated, it drives the third gear to rotate, and then drives the second gear to rotate, thereby changing the valve opening. When the operator releases the button, the valve resumes its motorized state.

Embodiment 3

[0050] Embodiment 3, system automatic calibration

[0051] After the valve has been used for a long time, the control of the valve opening will deviate. The system can automatically calibrate the deviation.

[0052] In the process of opening the valve, if the valve angle is fully opened, at this time, the limit protrusion will touch the switch of the left limiter RJ1, and after the single-chip microcomputer U receives the signal of the left limiter RJ1, then P1.0 and The P1.1 serial port outputs a low-level signal at the same time, and the NPN transistors Q1 and Q3 are turned off, then no current passes through the drive motor M, and the drive motor M stops working. And comparing the resistance value of the sliding rheostat RV at this time, whether the driving motor M should be stopped according to the resistance value, if the driving motor M should be stopped according to the resistance value, it proves that the angle control is accurate; if it should not be stopped accordin...

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Abstract

The invention discloses a manual-automatic integrated opening valve actuator. The actuator comprises an actuator shell, wherein a transmission mechanism is arranged on the actuator shell; the transmission mechanism comprises a first gear, a second gear, a third gear and a fourth gear; the first gear is connected with a driving motor through a driving shaft; the third gear is a double-layer gear and comprises an upper gear and a lower gear; the upper gear is in meshing connection with the first gear; the lower gear is in meshing connection with the second gear; the rear end face of the third gear is fixedly connected with an elastic connector; the front end of the third gear is connected with a button arranged at the front end of the actuator shell through a first polished rod; the second gear is rotatably connected to the actuator shell through a connecting shaft; the rear end of the connecting shaft is connected with a rotor of a valve; the fourth gear is arranged at the rear end of the third gear; when the button is pressed, the upper gear is in meshing connection with the fourth gear; and the front end of the fourth gear is fixedly connected with a handle arranged at the front end of the actuator shell through a second polished rod.

Description

technical field [0001] The invention relates to the field of control valves, in particular to a manual-automatic opening valve actuator. Background technique [0002] In the prior art, the opening of most valves cannot be adjusted, and the torque of a small number of valves that can adjust the opening is too small, most of which are less than 1N·m. Only a few valves using AC can reach more than 1N·m, but usually The equipment for mobile operations is powered by direct current, so AC valves are not suitable for equipment requirements for mobile operations. In addition, the control accuracy of the valve will deviate after long-term use; therefore, there is an urgent need for a valve with DC power supply, large torque, adjustable opening, and calibrated accuracy. Contents of the invention [0003] The purpose of the present invention is to solve the above problems and provide a hand-automatic integrated opening valve actuator with simple structure and convenient use. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/05
CPCF16K31/05F16K31/046
Inventor 茹煜刘洋洋曲荣佳徐靖王水金倪佳胜陈旭阳刘彬
Owner NANJING FORESTRY UNIV
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