a relief pump

Abstract

The invention discloses a pressure relief pump, comprising a valve body, a rotary shaft, a rotary disc, a sliding block, a pushing rod and a valve cover installed at the opening of the left end of thevalve body; a pressure relief cavity is formed between the valve cover and the valve body; the upper end position of the valve body is provided with a pressure relief mechanism and the lower end position is provided with a pressure relief adjusting mechanism; the rotary shaft is rotationally connected with the interior of the valve body; one end of the rotary shaft extends out of the valve body and the other end stretches into the valve body; the rotary disc is located in the valve body and coaxially installed on the rotary shaft; the sliding block is rotationally connected with the eccentricposition of the rotary disc; the pushing rod is slidingly connected the interior of the sliding block and the lower end of the pushing rod is hinged on a variable rod and the upper end is provided with an arc-shaped projection; the arc-shaped projection fits with the lower end of a valve core main body so as to push a pressure relief valve core to move upwards; the pressure relief pump can realize pressure maintaining and adjust the pressure relief speed automatically according to the system pressure so as to achieve the requirement that the ultra-high pressure can be slowly relief at a highpressure and the pressure relief speed is increased at a low pressure.

Description

technical field [0001] The invention relates to the technical field of pressure relief valves, in particular to a pressure relief pump. Background technique [0002] The synthesis equipment of synthetic diamond in my country is a six-sided top press, which uses an ultra-high pressure hydraulic system with an oil pressure of up to 100MPa. The ultra-high pressure oil pump it is equipped with can directly output oil pressure up to 100MPa to the working cylinder of the six-sided top press, and it needs to be released from the ultra-high pressure pipeline to reduce the pressure after the pressing work of the press is completed. [0003] However, since the oil pressure of the compressor varies in a very large range during the pressure relief process, and the pressure value changes with time during the pressure relief process according to the diamond synthesis process, it needs to be realized that the pressure relief speed is slow at high pressure, and the pressure decreases as tim...

AI Technical Summary

Problems solved by technology

[0003] However, since the oil pressure of the compressor varies in a very large range during the pressure relief process, and the pressure value changes with time during the pressure relief process according to the diamond synthesis process, it is necessary to realize that the pressure relief speed is slow at high pressure, and the pressure decreases as time goes by. The pressure relief speed needs to be faster at low pressure, which puts forward very strict requirements on the pressure relief components and control

Images