DQW series electric valve actuator is a part-turn type electric valve actuator
DQW series electric valve actuator is a part-turn electric valve actuator, which is suitable for ball valves, butterfly valves and other types of valves and electric dampers. Its structure type is combined type, which is composed of FRYDZW multi-turn electric device and HBC part-turn manual device. The applicable environmental conditions, temperature, temperature, altitude and protection level of this series of products can all reach the level of DZW corresponding specification products. The technical performance and electrical control principle are also the same as those of DZW products
Worm gearbox
Main feature:
· Complete enclosed transmission
· Built-in grease improves service life and seals
· A wide range of gear ratios can provide any input ratio selection for a wide range of applications
HBC is the strongest worm gearbox on the market. It provides continuous, trouble-free performance requiring
It is mainly used in key process positions of flow control in nuclear power plants and hydropower plants
The combination of HBC series worm gear reducer can provide quarter-turn output with lower speed and higher torque, and the torque output can reach 600,000N.m.
· The angle and orientation of the worm support is fully self-locking
· The detachable and easy-to-process drive sleeve is convenient to process the matching connection size;
· 0°~90° mechanical limit · The protection level is IP 67 (customized IP68)
· Working temperature is -40℃~+120℃; (special environmental requirements can be customized)
Ultra-torque gear box
DZW type electric valve actuator consists of six parts, namely three-phase asynchronous motor for electric valve actuator, gearbox control mechanism, hand-electric switching mechanism, hand wheel parts and electrical parts
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
Real pictures of DQW matching valves
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