Control method and control device of slow speed type electric valve
A technology of electric valve and control method, applied in the direction of valve operation/release device, valve device, valve details, etc., can solve the problems of increasing weight, increasing production cost, increasing transportation cost, etc., to avoid burnout and avoid water hammer. Effect
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[0020] The present invention will be described in detail below with reference to the drawings and embodiments.
[0021] The present invention is to add a pulsation time relay in the control box of the electric valve to reduce the opening and closing speed of the electric valve (such as figure 1 ), the control box of the electric valve includes power supply, control power supply, control operation switch and relay. Among them, the control power supply is a low-voltage DC power supply, and the control power supply provides working power for control operation switches, relays, etc. The control power supply is obtained from the power supply through the power supply circuit. The power supply circuit is a step-down and rectification circuit. After stepping down and rectifying the AC power supply, a low-voltage DC control power supply is obtained. The control operation switch controls the power supply connected to the motor of the electric valve through a relay to open and close the val...
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