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A pressure sensing signal automatic switching output control valve and method

A technology of automatic switching and output control, applied in valve details, valve devices, engine components, etc., can solve problems such as inability to adapt to complex working conditions, decreased sensitivity, etc., and achieve fast response, small pressure loss, and large flow capacity. Effect

Inactive Publication Date: 2011-12-21
NINGBO STF HYDRAULIC TRANSMISSIONS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when the flow rate of the existing control valve is high, the sensitivity decreases, so that it cannot adapt to complex working conditions

Method used

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  • A pressure sensing signal automatic switching output control valve and method
  • A pressure sensing signal automatic switching output control valve and method
  • A pressure sensing signal automatic switching output control valve and method

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0022] Such as figure 1 As shown, a pressure sensing signal automatic switching output control valve includes a pressure switching control valve body 1, a cut-out control spool assembly 2, a cut-in control spool assembly 3, a main switching valve body 4, a main switching spool 5, and a cut-in control spool assembly. Pressure adjustment assembly 6, forced low-speed valve body 7 and forced low-speed valve core 8, the right side of the pressure switching control valve body 1 is fixed with a main switching valve body 4, and the lower part of the main switching valve body 4 is connected and fixed with a forced low-speed valve body 7 And the forced low-speed valve body 7 is equipped with a forced low-speed spool 8, the main switching spool 5 in the main switching valve body 4 is vertically connected with the cut-out control spool assembly 2 in the pressure switching control valve body 1, and the main switching spool 5 The outside of the main switching valve body 4 at the right end i...

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PUM

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Abstract

The invention relates to an automatic switching output control valve for pressure sensing signals and a method. The control valve comprises a pressure switching control valve body, a switching-out control valve core component, a switching-in control valve core component, a main switching valve body, a main switching valve core, a switching-in pressure regulating component, a forcing low-speed valve body and a forcing low-speed valve core. The right side of the pressure switching control valve body is fixedly provided with the main switching valve body, the lower part of the main switching valve body is fixedly connected with the forcing low-speed valve body, the forcing low-speed valve core is arranged in the forcing low-speed valve body, the main switching valve core in the main switching valve body is vertically connected with the switching-out control valve core component in the pressure switching control valve body, and the outer side of the main switching valve body at the right end of the main switching valve core is provided with the switching-in pressure regulating component. The sensitivity of the device can be improved while the flow capacity of the existing control valve is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of control valves, and in particular relates to a control valve and a method for automatically switching and outputting pressure sensing signals. Background technique [0002] Control valve, also known as regulating valve, is the main execution unit instrument in industrial process control. By receiving the control signal output by the regulating control unit, it uses power operation to change the fluid flow. A control valve generally consists of an actuator and a valve. According to the power used by its matching actuator, the control valve can be divided into five types: pneumatic, electric, hydraulic, manual and self-operated, that is, the pneumatic control valve with compressed air as the power source, and the electric control valve with electricity as the power source. Valves, electro-hydraulic control valves powered by the pressure of liquid media (such as oil, etc.), manually operated manual control ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/00
Inventor 汪迎斗
Owner NINGBO STF HYDRAULIC TRANSMISSIONS CO LTD