Usage
DZW.DQW series outdoorelectric valve actuator is the driving device of electric valve, which is used to control the opening and closing of the valve. DZW series multi-turn electric devices are suitable for gate valves, globe valves, throttle valves, and diaphragm valves. DQW and DJW part-turn electric devices are derivatives of DZW products and are suitable for butterfly valves, ball valves and dampers. It can accurately act according to control instructions. It is an indispensable driving device for remote control, centralized control and automatic control of various valves and dampers. This series of products is not only used in power stations, but also in petrochemical, metallurgical, and public utilities career etc.
Features
1. The device is dust-proof, waterproof and light-corrosion-proof, and its protection level is IP55.IP65 (special order)
2. The torque control mechanism is reliable in action, easy to adjust, and high in torque repeatability:
3. The stroke control mechanism has high adjustment accuracy and repeatability, and can be equipped with 2 to 4 micro switches for the opening and closing directions.
4. The semi-automatic manual-electric switching mechanism is adopted in the low gear, and the structure is simple. Reliable work and easy operation 5. Three-phase asynchronous motor for electric valve actuator is adopted, with large starting torque and small moment of inertia
6. Equipped with mechanical valve position indicator
Composition
Transmission schematic diagram
Electrical parts
The opening indicator and the stroke controller are integrated structures, which are common parts of the whole series. The input gear is driven by the ones gear of the counter. After deceleration, the indicating plate rotates with the process of opening and closing the valve to indicate the opening or closing position of the valve. The shaft of the potentiometer and the indicator plate rotate synchronously for remote opening indication, and the angle between the open position and the closed position of the indicator plate can be changed by moving the number of revolutions to adjust the gear.
The stroke controller adopts the principle of decimal counter, which has high control precision. Common parts for the whole series. Its working principle is: a pair of large and small end gears in the reduction box drive the active pinion (Z=8), and then drive the stroke controller to work. After the stroke controller is adjusted according to the opening and closing position of the valve, when the controller rotates to the set position with the output shaft, the cam will rotate 90°, forcing the micro switch to act, disconnecting the power supply of the motor, and the motor stops, so as to realize the control Electric actuator stroke limit.
The motor is external, with good power performance, the output speed of the product has a wide selection range, and the output torque fully complies with the GB/T24923-2010 standard
The basic type electric actuator adopts the pointer display window, and the adjustment type actuator adopts the design of the pointer display window mirror surface and the knob recessed to prevent water accumulation.
The independent sealed terminal block can ensure the sealing integrity of the electrical parts inside the electric actuator and improve the protection ability of the actuator
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