Pneumatic hydraulic safety valve is a safety device widely used in hydraulic power systems and hydraulic equipment. It can also be used as a pressure limiting device. It is a special type of valve, which is different from traditional valves.
The traditional valve is powered by a mechanical metal spring. It can only be limited to medium and low pressure. When it encounters a pressure limit of more than 10Mpa, it can only be used to increase the volume of the pressurized design. Therefore, the traditional valve acts on the high pressure and ultra high pressure hydraulic power system. When the pressure limit of the hydraulic equipment is limited, the volume is cumbersome, the structure is complicated, the manufacturing is difficult, and the product cost is high; during the use, the fatigue change of the metal spring greatly causes the pressure limiting parameter to fluctuate greatly, and it is necessary to adjust frequently to ensure normal use.
The pneumatic hydraulic safety valve adopts high-pressure gas as the power source, and adopts the design scheme of changing the ratio of the size of the cylinder block and the spool. The product structure is simple, the volume is small, the pressure limit is stable, and the pressure limit from 0.1 Mpa to tens of thousands of Mpa can be realized. The product cost is greatly reduced. The specially designed "pneumatic hydraulic safety valve" can also be applied to the pressure-supporting pillar safety valve of the mine hydraulic support system.
The pneumatic hydraulic safety valve has two levels (slow speed and fast) pressure relief function and a pressure limiting function from low to ultra high pressure; it has the advantages of stable pressure limiting pressure relief and good corrosion resistance, and the patented product can greatly Improve and expand the quality and performance of hydraulic power systems and hydraulic equipment mine support equipment. At the same time, with the development of material technology, the performance of the hydraulic product design scheme is better. The patented product is also refillable and reusable, and its service life is several times that of traditional products.
This article is reproduced from Gu'an Xinxiang Filter Equipment Co., Ltd.: http://
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