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High-flow pneumatic pressure ratio control servo valve

A proportional control, large flow technology, used in fluid pressure actuation devices, servo motor assemblies, mechanical equipment, etc., can solve the problems of large space, controllability of precision, and low reliability, reducing installation space and Volume, controlled pressure with reasonable precision and high agility

Active Publication Date: 2012-10-10
WUXI TUOFA AUTOMATIC CONTROL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And this kind of pressure proportional control servo valve with split elements does not consume compressed air after reaching a steady state, but it occupies a large space, and the controllability of precision and reliability are relatively low.

Method used

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  • High-flow pneumatic pressure ratio control servo valve
  • High-flow pneumatic pressure ratio control servo valve
  • High-flow pneumatic pressure ratio control servo valve

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Embodiment Construction

[0033] The large-flow pneumatic pressure proportional control servo valve of the present invention includes a self-contained pilot air source type EP valve. The exhaust valve is a normally open two-position two-way solenoid valve, and the pilot air source is an external control type EP valve. Open two-position two-way solenoid valve, the exhaust valve in the EP valve with pilot air source is a large flow pneumatic pressure proportional control servo valve with a normally closed two-position two-way solenoid valve and the pilot air source is an externally controlled EP valve The exhaust valve is a four-type large-flow pneumatic pressure proportional control servo valve with a normally closed two-position two-way solenoid valve.

[0034] The design principle is: Figure 1a , B, c, d, after the pulse width control signal sent by the measurement and control electrical circuit 15, according to the pulse width control signal, according to the pulse width control signal, according to the ...

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Abstract

The invention relates to a high-flow electric control precise air pressure control valve, in particular to a high-flow pneumatic pressure ratio control servo valve. According to the technical scheme of the invention, the high-flow pneumatic pressure ratio control servo valve comprises an E-P valve, a diaphragm type air control precise pressure control valve, a pressure stabilizing air chamber, a pressure transmitter and a measurement and control electrical loop. The valve is characterized in that the E-P valve, the diaphragm type air control precise pressure control valve, the pressure stabilizing air chamber, the pressure transmitter and the measurement and control electrical loop are integrated into a whole. In the invention, the E-P valve, the diaphragm type air control precise pressure control valve, the pressure stabilizing air chamber, the pressure transmitter and the measurement and control electrical loop are integrated into a whole, so that the space occupied by the pneumaticpressure ratio control servo valve is greatly reduced on the premise of guaranteeing to reach a stable state without consuming compressed air, and the precision controllability and the reliability are greatly improved.

Description

Technical field [0001] The invention relates to a large-flow electronically controlled precision pneumatic pressure control valve, in particular to a large-flow pneumatic pressure proportional control servo valve. Background technique [0002] Domestic and foreign large-flow pneumatic pressure proportional control servo valves are roughly divided into spool type, nozzle baffle type, jet type, and pressure proportional control servo valves according to their control methods. This type of pressure proportional control servo valve will consume a certain amount after reaching a stable state. Of compressed air. The other type of pressure proportional control servo valve controls the externally controlled diaphragm-type air-controlled precision pressure control valve through a small flow EP valve pilot, and a pressure transmitter and voltage regulator are installed downstream of the output port of the air-controlled precision pressure control valve. In the air chamber, the external "m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B13/02
Inventor 荣昉张整风陈罡荣琳
Owner WUXI TUOFA AUTOMATIC CONTROL EQUIP
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