Rotary type differential motion proportional pressure regulating mechanism

Abstract

Provided is a rotary type differential motion proportional pressure regulating mechanism. The rotary type differential motion proportional pressure regulating mechanism comprises a fluid laminar flow implementation mechanism, a first pressure measuring point, a second pressure measuring point, and a pressure measuring point position regulating mechanism. The fluid laminar flow implementation mechanism comprises a valve core and a valve sleeve, a gap between the valve core and the valve sleeve is communicated with an oil inlet and an oil outlet, fluid flow in the gap is in a laminar flow state, pressure distribution between the oil inlet and the oil outlet is in stable linear distribution, the first pressure measuring point and the second pressure measuring point are both pressure measuring holes which penetrate through the valve sleeve, the pressure measuring holes are communicated with the gap, and the pressure measuring point position regulating mechanism comprises the valve core and a push part which pushes the valve core to rotate inside the valve sleeve. The rotary type differential motion proportional pressure regulating mechanism has the advantages that a laminar flow passage of fluid is arranged annularly, control sensitivity is high, pressure is stable, and proportional control can be easily achieved.

Description

technical field [0001] The invention relates to a rotary differential proportional pressure regulating mechanism, which is applied in the field of fluid pressure control. Background technique [0002] Proportional pressure control valves are often used as pilot valves to form two-stage or three-stage valves. For example, the electro-hydraulic proportional reversing valve is composed of an electromagnetic force motor, a proportional pressure reducing valve and a hydraulic directional valve. Balance, so as to control the displacement opening of the reversing main valve. For the two-way electro-hydraulic proportional directional valve, it is necessary to control the pressure in the two chambers of the directional main valve. However, the existing proportional pressure control valve has the problems of low control sensitivity, high difficulty in pressure control, and unstable pressure. Contents of the invention [0003] In order to overcome the problems of low control sensi...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problems of low control sensitivity, difficult pressure control and unstable pressure of the existing pressure regulating mechanism, the present invention provides a rotary differential proportional pressure regulating mechanism with high control sensitivity, stable pressure and easy realization of proportional control

Images