Ultra-high-pressure pressure relief pump

Abstract

The invention discloses an ultra-high-pressure pressure relief pump. The ultra-high-pressure pressure relief pump comprises a pump body and a pump shell mounted on the right end surface of the pump body, an oil discharge cavity is formed between the pump shell and the right end surface of the pump body, a rotating shaft extending out of the pump shell is rotatably connected with the right end surface of the pump body, a plurality of pressure relief modules are evenly installed at the position, located in the oil discharge cavity, on the right end surface of the pump body with the rotating shaft as the center at intervals, and a first shaft sleeve and a second shaft sleeve rotatably connected with the first shaft sleeve and with the orthohexagonal cross section are eccentrically and fixedlymounted on the position, located on rotating shaft, in the oil discharge cavity; and each pressure relief module comprises a pressure relief cylinder body, a pressure relief valve core, a pressure relief spring, a pressure relief screw plug, an ejecting block, and a compaction spring, an A oil opening is formed in the left end surface of the pump body, a third communicating hole is formed in thepump body, and a B oil opening communicated with the oil discharge cavity is formed in the pump body. The ultra-high-pressure pressure relief pump is not only compact in volume and low in cost, but also can achieve slowly relieve the pressure at the high pressure, and slowly increase the pressure relief speed over time.

Description

technical field [0001] The invention relates to the technical field of pressure relief pumps, in particular to an ultrahigh 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. At present, the ultra-high pressure pressure relief system of the six-sided top press basically uses the electromagnetic reversing valve to control the on-off of the single-stage pressure relief valve to achieve pressure relief. The small liquid flow damping hole is used to control the return flow rate of the drained oil to reduce the impact of ...

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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 achieve a full pressure relief speed at high pressure (100MPa-40MPa). As time goes by, the pressure decreases, and the pressure relief speed needs to be faster at low pressure (40MPa-6MPa), which puts forward very strict requirements on the pressure relief components and control

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