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High-flow pneumatic pressure ratio control servo valve

A technology of proportional control and large flow, which is applied in the direction of fluid pressure actuators, servo motor components, mechanical equipment, etc., can solve the problems of large space, controllability of precision, and low reliability, so as to reduce installation space and Volume, controlled pressure with reasonable accuracy and high sensitivity

Active Publication Date: 2011-01-12
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

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Embodiment Construction

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

[0034] The design principle is: Figure 1a In, 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, the fa...

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PUM

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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 pneumatic pressure 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 precise air pressure control valve, in particular to a large-flow pneumatic pressure proportional control servo valve. Background technique [0002] Large-flow pneumatic pressure proportional control servo valves at home and abroad are roughly divided into slide valve type, nozzle baffle type, jet type, and pressure proportional control servo valves according to their control methods. of compressed air. Another type of pressure proportional control servo valve controls the externally controlled diaphragm air-controlled precision pressure control valve through the small flow E-P valve, and a pressure transmitter and a pressure regulator are installed downstream of the output port of the air-controlled precision pressure control valve. The air chamber, the peripheral "measurement and control electrical circuit" receives the electrical signal output by the pressure transmitter (converted fro...

Claims

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Application Information

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Patent Type & Authority Applications(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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