The hydraulic control working principle of the pneumatic valve classification and analysis

hydraulic control pneumatic valve control oil in hydraulic system is the direction, pressure and flow rate of components. With the aid of the pneumatic valve, can start, stop, components for the implementation of the direction, speed, action sequence and the ability to overcome the load control and adjustment, make all kinds of hydraulic machinery can coordinate to work as required. The classification of hydraulic pneumatic valve

A 【 According to utility cent 】
direction of hydraulic pneumatic valve can be divided into pneumatic valve control ( Such as one-way pneumatic valves and reversing pneumatic valve) Pneumatic valve, pressure control ( Such as overflow pneumatic valve, relief valve and sequence of pneumatic valves and flow control pneumatic valve (such as Such as pneumatic valve and throttle control pneumatic valve, etc. ) 。 These three kinds of pneumatic valve can also be mutual combination become a combination of pneumatic valve according to need, such as ChanXiangChuan page sequence pneumatic valve, one-way throttling pneumatic valve, electromagnetic relief valve, etc. , make its compact structure, simple connection, and improve the efficiency.
B【 According to the working principle of the points.
hydraulic pneumatic valve can be divided into pneumatic valve switch ( Or an expired moving valve) Servo pneumatic valve, pneumatic valve, pneumatic valve and logic. Pneumatic valve switch after setting can only work in the condition of setting, this chapter focuses on one of the most common use of pneumatic valve class. Pneumatic valve and proportion of pneumatic servo valve can be according to the input signal is continuously or proportional control system of the data. Logic pneumatic valve is according to the logic of the program in advance control actuators.
C【 According to the installation connection points 】
press installation form, hydraulic pneumatic valve can be divided into:
( Screw type ( Pipe installation. Pneumatic valve oil mouth with screw pipe and pipe, and other elements are connected, and thus is fixed on the tube road. This applies to simple hydraulic system.
　　( Screw installation. Pneumatic valve of the oil outlet are arranged on the same installation, and the screw in the corresponding with the pneumatic valve oil mouth connection plate, pipe and pipe connected with other components. Or the pneumatic valve with a few screws in a integrated block
on the different aspects of cut holes in integrated block, the communication of the pneumatic valve circuit. Due to the removal of pneumatic valve without disassembly is linked together with the other components, so widely used this connection way of installation.
　　( Superposition type installation. Pneumatic valve on the following for the connection joint surface, the oil outlet respectively in the two face, and with the specifications of the pneumatic valve oil outlet connections the same size. Each pneumatic valve in addition to its own function, also ACTS as the oil channel, pneumatic valve piled up into a circuit, each other without pipe connection, so the structure is compact, small resistance loss.
　　( Flange connection installed. And screw connection are similar, just flange instead of screw pipe joint. Used for sizing! _ over the big traffic system. Its high strength, reliable connection.
　　( Cartridge installation. Such as no separate pneumatic valve, pneumatic valve, pneumatic valve by pneumatic valve core set of etc of the unit cell instrumentation in instrumentation pieces of preformed hole, fixed with screw connection or cover plate, and through the channels within the cartridge of pneumatic valve connection circuit, instrumentation block play the role of pneumatic valve and pipeline. It is adapt to the hydraulic system integration and developed a new kind of installation way.