Pressure valve

Abstract

The invention discloses a pressure valve, and relates to the field of iron chromium aluminum alloy manufacturing. The pressure valve comprises an inlet, an outlet, mounting openings and a sealing cover. The inlet and the outlet are connected with an exhaust pipe made of iron chromium aluminum alloy materials, and the mounting openings are connected with a connecting pipe; a liquid inlet hole and a liquid draining hole are formed in the connecting pipe, and the liquid inlet hole is connected with a cavity; the cavity is connected with the liquid draining hole, and a liquid draining pipe is connected with the exhaust pipe; an adjusting valve is arranged inside the cavity, and the exhaust pipe is made of the iron chromium aluminum alloy materials and has the advantages of being light in mass and the like; and meanwhile, in the liquid environment, integrality of the materials is protected. The mounting openings are connected with the connecting pipe, and the liquid inlet hole and the liquid draining hole are formed in the connecting pipe; the liquid inlet hole is connected with the liquid draining hole through the cavity; the adjusting valve is arranged in the cavity, and therefore the problem that due to pressure inside the pressure valve, liquid media cannot be completely drained to a valve body is solved; and the dynamic and static state of the liquid media is easily controlled.

Description

technical field [0001] The invention relates to the field of iron-chromium-aluminum alloy manufacturing, in particular to a pressure valve. Background technique [0002] It is understood that the slow-closing mechanisms of the existing pressure valves are all hydraulic-controlled slow-closing mechanisms. Inside, the piston in the cylinder is withdrawn and extended to the inside of the valve body. When the pump stops running, it will fall on the piston by its own weight and the pressure of the return liquid, so that the piston returns to its original position. The application number is CN200620053419.4 , the patent name is an invention patent of an indicating pressure valve, which has the function of air pressure display and air pressure adjustment function, and has a compact structure, good sealing performance, sensitive and reliable action, and safe use. However, this pressure valve is due to the existence of internal pressure. , so that the liquid medium cannot be co...

AI Technical Summary

Problems solved by technology

[0002] It is understood that the slow-closing mechanisms of the existing pressure valves are all hydraulic-controlled slow-closing mechanisms. Inside, the piston in the cylinder is withdrawn and extended to the inside of the valve body. When the pump stops running, it will fall on the piston by its own weight and the pressure of the return liquid, so that the piston returns to its original position. The application number is CN200620053419.4 , the patent name is an invention patent of an indicating pressure valve, which has the function of air pressure display and air pressure adjustment function, and has a compact structure, good sealing performance, sensitive and reliable action, and safe use. However, this pressure valve is due to the existence of internal pressure. , so that the liquid medium cannot be completely discharged back into the body, and it is difficult to control the dynamic and static state of the liquid medium; moreover, a series of chemical reactions are prone to occur in the liquid for a long time

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