Turning manual, you need to switch the handle, when the manual state becomes electric, the manual state will automatically run. Its structure is shown in Figure 9. It consists of a handle, switching parts, vertical rod, clutch, compression spring and so on. When handwheel operation is required, the handle is pushed along the manual direction, the switching member lifts the clutch and presses the compression spring.
When the handle is pushed to a certain position, the clutch disengages from the worm gear and engages the handwheel. At the same time, the upright lever is held upright on the end face of the worm gear by the torsion spring, not allowing the clutch to drop. When the switch is complete, the handle can be released and the handwheel used for operation. . When electric operation is required, the motor will drive the worm gear and the upright bar supported on the end face of the worm gear will drop. Under the action of the compression spring, the clutch will quickly move toward and engage the worm wheel and disengage the handwheel, automatically enabling manual operation. Conversion to electrical state.
Expanded InformationAs the working characteristics and utilization rate of the valve electric device depends on the type of valve, device working specification and the position of the valve on the pipeline or equipment.
Electric device generally consists of the following parts:
Special motor, characterized by strong overload capacity, starting torque, small moment of inertia, short-term, intermittent work. Deceleration mechanism, used to reduce the output speed of the motor.
Travel control mechanism, used to regulate and accurately control the opening and closing position of the valve.
Torque limiting mechanism, used to adjust the torque (or thrust) and make it not exceed the predetermined value.
Manual, electric switching mechanism, manual or electric operation of the interlocking mechanism.
Baidu Encyclopedia-Valve electric device