Implanted direct relief valve

Abstract

The invention discloses an implanted direct relief valve. The implanted direct relief valve comprises a valve block, wherein an installation hole is formed in the valve block, an oil inlet and an oil outlet are formed in the valve block, a safety valve is arranged in the installation hole and comprises a valve seat and a pressure adjusting screw, a valve element is arranged in the valve seat, one end of the valve element stretches out of the valve seat, a spring is arranged between the stretching-out end of the valve element and the pressure adjusting screw, a pressure cavity is formed between the valve seat and the valve element, an oil hole used for enabling the pressure cavity to be communicated with the oil inlet is formed in the valve seat, a conical surface matched with the valve seat is arranged on the stretching-out end of the valve element, an internal thread section is arranged on the inner wall of the valve block, a first thread section and a second thread section matched with the internal thread section are arranged on the pressure adjusting screw in parallel, an axial gap is reserved between the first thread section and the second thread section, and the leading-in angle of the first thread section is different from that of the second thread section. The implanted direct relief valve is simple and reasonable in structure, small in size, high in installation speed and good in self-locking effect.

Description

technical field [0001] The invention relates to the technical field of direct-acting overflow valves, in particular to an implanted direct-acting overflow valve. Background technique [0002] The relief valve is a hydraulic pressure control valve, which mainly plays the role of constant pressure relief in hydraulic equipment. There are many types of relief valves, and the direct-acting relief valve is one of them, which is well known and common to the public. The direct-acting relief valve needs to be installed inside the hydraulic valve block or hydraulic actuator when in use. The direct-acting relief valves currently on the market usually appear in the form of cartridge valves, that is, the direct-acting relief valve is used as An independent combined component is installed inside the hydraulic valve block or hydraulic actuator. The disadvantage of this is that the entire installation structure is large in size and cannot be adapted to compact structures, resulting in rel...

AI Technical Summary

Problems solved by technology

The direct-acting relief valve needs to be installed inside the hydraulic valve block or hydraulic actuator when in use. The direct-acting relief valves currently on the market usually appear in the form of cartridge valves, that is, the direct-acting relief valve is used as An independent combined component is installed inside the hydraulic valve block or hydraulic actuator, so the disadvantage is that the entire installation structure is large in size and cannot be adapted to compact structures, resulting in greater limitations in use

In addition, in order to adjust the pressure of the direct-acting relief valve, a pressure regulating screw that matches the spring is usually installed in the valve body. The pressure regulating screw is threaded with the valve body. By adjusting the position of the pressure regulating screw, It can change the compression amount of the spring, so as to play the role of pressure regulation. However, due to the unreasonable structural setting of the existing direct-acting relief valve, the pressure regulation screw cannot play the effect of self-locking when the flow rate increases. When the pressure is too large, the pressure regulating screw is easy to loosen under the thrust of the valve core, which affects the normal operation of the relief valve.

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