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| Hydraulic and pneumatic supercharging cylinder reversing valve type direction of classification and work principle | Reversing valve type direction (hereinafter referred to as the reversing valves), is through the change of air and gas flow passage direction changes, so as to change the direction of movement of pneumatic actuators. It includes directional control valves, pneumatic electromagnetic control mechanical control directional control valve, directional control valves, manpower and time controlled directional valve controlled directional control valves, etc.
Key words: pressurization valve supercharger
1, pressure control directional control valves, pneumatic reversing valve is used to make the gas pressure valve core.the movement and make the gas flow of change. According to the different control modes into pressure control, discharging pressure control and differential pressure control. Pressure control refers to the control signal pressure is increased gradually to increase pressure. When the valve core.the movement, the main valve and commutation, Discharging pressure control refers to the gas control signal pressure is reduced, when reduced to a certain value, the main valve commutation, Differential pressure control is the main valve core at both ends of the pressure difference under the action of commutation. According to the directional control valve of the structure, can divide again by rotary piston and two main forms. Rotary piston directional control valve of the structure and the working principle and DongHuan fluid to the valve are basically the same. In this article is introduced by reversing valve type. By the working principle of reversing valve type two tees single breath control by the working principle of directional control valves. For the mouth and not control signals. In spring and P valve core.the cavity pressure, P and A disconnected, with A T, valve in exhaust. When K have control signal, P, with A with 2, disconnect, A mouth intake. For two tees single breath control by reversing valve type of structure. When K mouth without signal. A T, exhaust valve in the state, When A signal is input mouth K, compressed air into the pistons, that is the stem may move, P and A left. As shown in the diagram of type valve, if often broken with T P changed ChangTong becomes.
2 and polot electromagnetic reversing valve polot double electric two stone electromagnetic reversing valves. It consists of pilot valve (Dl, D2) and the main valve. But the main valve body 1 and piston and includes two components. Here is the Dl, both in the state power D2. Electromagnetic valve moving iron core 5, 6 closed. When the Dl electricity, D2, moving iron core power is 5, by the mouth of compressed air to P via hole into a line of valve (f). Sealing plug from 4 (check) around the lips, and enter into the hole. Wide cavity, promote the piston moves, make two components, B vitamin P with the valve core center hole with T h (exhaust). A mouth has compressed air output, part of compressed air into hole, one pass g. d. c. chamber orifice sealing plug into 4 to shut down, all other vent b f cavity compressed air into the role in Detroit, the top two components. At this time, even without Dl, piston component 2 will be the valve has a memory function. Polot double electric two stone electromagnetic reversing valve when the pilot valve D2 electricity power, when moving iron core Dl, 6 is sucked up, c cavity compressed air via T1 mouth. At that moment, from compressed air to A P in large and small piston, piston due to large and small area of the poor and the reaction, make up the piston moves two components. Meanwhile, sealing plug, and open up and 4 mouth, piston valve three components of the top 2 6 compressed air holes. The piston moves, P after two components, A and B (T) exhaust. At this time, because even D2 and size of the piston area sent up force still exists, so the output state does not change, which has the function of memory. Directional control valve and the hydraulic pneumatic electromagnetic valve, electromagnetic reversing have many types and its working principle, and etc.
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