High water base, high pressure and large flow digital proportional directional valve with manual and automatic control
A proportional directional valve, high water-based technology, applied in the direction of fluid pressure actuators, valve devices, servo motor components, etc., can solve the problems of valve opening and valve flow that cannot be continuously proportionally controlled structure and function, etc., to achieve reduction The effect of controlling dead zone and reversing crawling, strong anti-pollution ability and flexible design
Active Publication Date: 2022-05-24
TAIYUAN UNIV OF TECH
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Problems solved by technology
[0006] The purpose of the present invention is to provide a new type of high-water-based high-pressure large-flow digital valve to solve the existing on-off and reversing valves that cannot continuously proportionally control the opening of the valve port and the flow rate of the valve port and the structure and function of the existing high-water-based proportional valves. Proportional Directional Valve
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[0031] In order to have a clearer understanding of the technical features, objects and effects of the present invention, the specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
[0032] see figure 1 , The present invention provides a high-water-based, high-pressure and large-flow digital proportional directional valve controlled manually and automatically, comprising: a main valve, a pilot valve and an electronic control unit e;
[0033]Among them, the main valve includes a liquid inlet valve sleeve 1, a liquid inlet valve core 2, a valve seat 4, a liquid return valve core 5 and a liquid return valve sleeve 6; the liquid return valve core 5 is annular, and is sleeved on the liquid inlet valve core 2 The outer side of the liquid return valve sleeve 6 is placed on the outside of the liquid return valve core 5, and a first cavity a is formed between the liquid inlet valve core 2, the liquid return valve core 5...
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The invention discloses a high-water-based, high-pressure, large-flow digital proportional directional valve with manual and automatic control. Inlet / return liquid switch control function, the pilot stage is composed of a two-position three-way switch valve and a two-position two-way high-speed switch valve. The invented proportional directional valve has a built-in displacement sensing function and valve port flow calculation function. The pressure of the liquid inlet, return liquid and working port can be monitored through the pressure sensing element, and then calculated by the electronic control unit ECU to infer the displacement of the valve core and the flow rate of the valve port. , The overall use of a plug-in structure can be easily integrated into a valve group form. It has the characteristics of simple structure, compactness, pollution resistance, and can complete intelligent perception and control.
Description
technical field [0001] The present invention relates to the technical field of hydraulic control, and more particularly, to a high-water-based, high-pressure and large-flow digital proportional directional valve controlled by manual and automatic integration. Background technique [0002] Coal is the most important energy source in my country. At present, intelligent mining is the development direction of the international coal mining field. The intelligence of the hydraulic support is an important part of the intelligentization of coal mining, and the reversing valve is the core component of the hydraulic control part of the hydraulic support. At present, the reversing valve used in coal mines is an on-off valve with a two-position three-way structure, which is highlighted by the following problems: 1. The hydraulic support system has high hydraulic pressure (31.5MPa), large flow (currently 400L / min), and reversing When the valve is switched at high speed, it brings huge h...
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IPC IPC(8): F15B13/02F16K37/00
CPCF15B13/021F16K37/0025
Inventor 赵瑞豪廖瑶瑶廉自生袁红兵董建麟李润泽
Owner TAIYUAN UNIV OF TECH