Fine Smart Electric Actuator
1. Powerful functions: ·Intelligent, proportional, on-off, and various signal outputs; ·The full travel time is 5 seconds, 10 seconds, 15 seconds, 30 seconds, 60 seconds, etc. for you to choose from; ·The intelligent control module is integrated into the electric device body, without the need for an external positioner.
2. Reliable performance: ·The special copper alloy forged integrated worm gear has high strength, good wear resistance and high rotation accuracy; ·High-quality imported bearings, electrical components and other key components increase the service life; passed the 1500V withstand voltage test, the F-class insulated motor is safe and reliable·IP67 High standard protection level.
3. Easy to use: ·No refueling, no inspection required, waterproof and rust-proof, and can be installed at any angle; ·Adopts single-phase power supply, simple external wiring, and has AC (24, 110, 380) V and DC (1224220) V to choose from;
4. Beautiful appearance: ·Aluminum alloy die-cast shell, fine and smooth: ·The volume and weight are only about 35% of the traditional one
Installation
Indoor installation matters at the installation site It is a non-explosion-proof product. Do not install it in a room with explosive gases. Please reserve space for incoming wires and manual operation.
Precautions for outdoor installation Please install a protective cover and make sure the wiring cover is tightly closed after wiring for safety precautions Note: Direct sunlight will cause high temperatures inside the machine and accelerate the aging of components. Rainwater will accelerate the aging of seals, causing water seepage and damaging the machine.
Electric Upvc Ball Valve
Overview
Electric UPVC ball valves are light in weight and have strong corrosion resistance. They are used in many fields, such as general pure water and domestic drinking water piping systems, drainage and sewage piping systems, salt water and seawater piping systems, acid-base and chemical solution systems. In many other industries, the quality has been recognized by the majority of users. Plastic ball valves are suitable for shutting off the transportation process of corrosive media. According to different materials, the temperature is -14℃~100℃, -40℃~140℃. All parts are assembled using RPP or PVDF injection molded parts, and the plastic ball valve has excellent corrosion resistance. The sealing ring is F4. Excellent corrosion resistance and extended service life. Flexible rotation and easy to use. Plastic ball valve The integral ball valve has fewer leakage points and high strength, and the connected ball valve is easy to assemble and disassemble. Plastic ball valve classification: flange plastic ball valve, threaded plastic ball valve, socket plastic ball valve, double-youring plastic ball valve
Structural Features
Plastic ball valves have the characteristics of simple structure, small size, light weight, low material consumption, small installation size, rapid switching, 90° reciprocating rotation, and small driving torque. They are used to cut off, connect, and regulate the medium in the pipeline. Good flow control characteristics and shut-off sealing performance.
Plastic ball valves can transport mud with minimal accumulation of liquid at the pipe mouth. At low pressure, a good seal can be achieved. Good adjustment performance. The streamlined design of the plastic ball valve reduces fluid resistance loss and can be said to be an energy-saving product.
The valve stem is a through-stem structure, which has been quenched and tempered and has good comprehensive mechanical properties, corrosion resistance, and scratch resistance. When the ball valve opens and closes, the valve stem only rotates and does not move up and down. The packing of the valve stem is not easily damaged and the sealing is reliable. It is fixed with the taper pin of the butterfly plate, and the extended end is designed to prevent the valve stem from collapsing when the connection between the valve stem and the butterfly plate breaks accidentally. The connection methods include flange connection, clamp connection, butt welding connection and lug clamp connection. The driving forms include manual, worm gear transmission, electric, pneumatic, hydraulic, electro-hydraulic linkage and other actuators, which can realize remote control and automatic operation.
Working Principle
The relationship between the opening and flow rate of a plastic ball valve basically changes in a linear proportion. If it is used to control flow, its flow characteristics are also closely related to the flow resistance of the piping. For example, if two pipelines are equipped with the same valve diameter and form, but the pipeline loss coefficient is different, the flow rate of the valve will be very different.
If the valve is in a state of large throttling amplitude, cavitation is prone to occur on the back of the valve plate, which may damage the valve. It is generally used outside 15°. When the plastic ball valve is at a medium opening, the opening shape formed by the valve body and the front end of the butterfly plate is centered on the valve axis, and the two sides form different states. The front end of the butterfly plate on one side moves in the direction of the water flow, and the front end of the butterfly plate on the other side moves in the direction of the water flow.
Therefore, one side of the valve body and the valve plate form a nozzle-shaped opening, and the other side is similar to a throttle-shaped opening. The flow rate on the nozzle side is much faster than that on the throttling side, and negative pressure will be generated under the throttling side valve. Rubber seals often come off. Plastic ball valves and butterfly stems do not have self-locking capabilities. In order to position the butterfly plate, a worm gear reducer must be installed on the valve stem.
The use of worm gear reducer not only makes the butterfly plate self-locking, allowing the butterfly plate to stop at any position, but also improves the operating performance of the valve. The operating torque of plastic ball valves has different values due to different openings and valve opening and closing directions. For horizontal ball valves, especially large-diameter valves, the torque generated by the water depth and the head difference between the upper and lower valve shaft cannot be ignored. In addition, when an elbow is installed on the inlet side of the valve, bias flow will occur and the torque will increase. When the valve is at the intermediate opening, the operating mechanism needs to self-lock due to the effect of hydrodynamic torque.
Company Qualifications
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