Standard 90° rotary actuator, valve electric device product overview
DL imported series electric actuators are suitable for part-turn valves (such as butterfly valves, ball valves and damper baffles, etc.), using imported electronic components, high-quality aluminum alloy die-casting shells, fine and smooth, small in size, light in weight, maintenance-free, and corrosion-resistant Excellent performance such as strong sex, can be used in narrow places. Products are widely used in buildings.
Description of standard 90° rotary actuator and valve electric device:
1. The actuator mainly controls the drive device that drives the valve. Simply put, it controls the forward and reverse rotation of the valve. The first thing to consider is to choose the size of the actuator motor according to the torque of the valve. The torque of the valve is generally 1NM-30000NM In between, the choice of motor is also around 0.09KW-15KW. Motors below 3KW can be controlled by contactors or thyristors, and those above 3KW must be controlled by contactors.
2. According to the process requirements of the customer's site, see whether the valve is on-off or adjustable. If it is an adjustable type, and if the adjustment is frequent, SCR must be used, because the dark contact of the SCR can be used for unlimited times , And the service life of the contactor is 10,000,000 times,
3. The stopping method is to stop by the limit of the door actuator, or to stop by torque. Each actuator must be equipped with a limit switch and a torque switch. If a limit stop is used, the torque switch is used as protection, such as a torque stop. The limit switch is used as protection.
4 The switch type electrical control method is relatively simple. It can be said that the simplest can be made into a forward and reverse control circuit, while the adjustment type needs a potentiometer or a Hall element for feedback, which can be designed in combination with a PLC or a single-chip microcomputer. 5 If it is profibus and other bus control, it can be said that the domestic actuators are not at this level, and the technology of foreign actuators is very mature. 6 The power supply mode can be selected according to the power supply board. Basically, 380V or 220V is used in China.
Yu automation, water conservancy, papermaking, electric power, chemical industry and other automation control systems.
Maintenance and maintenance of small electric actuators
The product transmission system uses high-quality molybdenum-based grease with long life and good pressure resistance, which is the transmission system
Long-term lubrication, no need to add oil.
After installation, the product should be operated regularly to check for abnormalities.
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