A kind of pressure direct detection type manual adjustment relief valve

Abstract

The invention relates to a hydraulic control element in the fluid drive and control field, in particular to a direct pressure detection type manual adjustment overflow valve. The overflow valve is characterized by comprising a 2D valve component and a pressure-torsion coupler component; the 2D valve component comprises a valve body, a valve core, a left end cover, a right end cover, a first O-shaped sealing ring, a second O-shaped sealing ring and fixing bolts, and the pressure-torsion coupler component comprises a wedge-shaped piece, second bearing shafts, second rolling bearings, a pressure adjustment handle, a spring and a pressing block. The overflow valve has the advantages that by the adoption of a direct pressure detection mode, the dynamic response speed is increased; by the adoption of the pressure-torsion coupler, force amplification is achieved, and small spring force can control large high-pressure flow; by the adoption of the 2D structure of the valve body, the valve core can be rotated or directly operated, and the overflow valve is simple in structure and small in size; the overflow valve achieves mechanical closed-loop negative feedback and pressure feedback, system stability is improved, and the deviation of steady pressure adjustment is small.

Description

Technical field [0001] The invention belongs to a hydraulic control element in the field of fluid transmission and control, and particularly relates to a pressure direct detection type manual overflow valve. Background technique [0002] In the hydraulic system, the overflow valve plays a very important role. The performance of the overflow valve directly affects the control performance of the entire hydraulic system, which in turn affects the overall quality and technical level of high-end manufacturing equipment. Now overflow valves are widely used in many important engineering fields, such as large-scale numerical control equipment, engineering machinery, etc.; missiles, satellites, ships and other military and aerospace fields; automobiles, mobile machinery, etc., occupy a very important role in the development of the national economy status. [0003] Hand-regulated relief valves are divided into direct-acting relief valves and pilot-controlled relief valves. The direct-acting...

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Problems solved by technology

[0004] In order to further reduce the size of the relief valve, realize high pressure and large flow control, and overcome the problems of large steady-state pressure regulation deviation of the traditional relief valve, the present invention provides a technical solution for a direct pressure detection manual relief valve

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