Steel forged refrigeration valve

Abstract

The invention relates to a valve, in particular to a steel forged valves including ammonia valves fluorine valves and the like which are applicable to all universal refrigerants, and mainly solves the problem that the refrigerant use for refrigeration utilizing a conventional valve is prone to leak since a bonnet mounted into a valve seat is eccentric and the conventional valve seat has multiple welding points. The steel forged refrigeration valve comprises a valve seat, a bonnet, a valve stem, a valve stem sleeve, a valve flap and a sealing cover, wherein the bonnet is in bolted connection with the valve seat, the valve stem sleeve is arranged on the bonnet, a clamp groove formed by an upper U-shaped chute and a lower U-shaped chute is arranged on the valve flap which is in clamping connection with the valve stem via the clamp groove, an elastic gasket is arranged between the valve stem and the valve flap, the valve flap and a valve body are enabled to be automatically adjusted concentrically, a valve flap gasket contacts with a sealing surface of the valve seat via a conical surface to form sealing, double O-shaped rubber sealing rings are arranged between the valve stem and the sealing cover for sealing, the valve stem sleeve is arranged on the valve bonnet, the sealing cover is arranged on the valve stem sleeve, and a bonded gasket seal is arranged between the sealing cover and the valve stem cover to improve sealing performance.

Description

technical field [0001] The invention relates to a valve, especially a forged steel refrigeration valve suitable for all common refrigerants and non-corrosive gas and liquid control, including ammonia valves, fluorine valves and the like. Background technique [0002] Valves are used more and more in refrigeration units and systems such as refrigeration, air conditioning, and cold chain. At present, most of the steel valves used for general refrigerants are traditional cast steel valves or welded valves. Valves, check valves, stop check valves, etc., due to: [0003] ① Due to its structure, there must be a sliding sealing point between the valve stem and the valve stem sleeve, but it is difficult to solve the refrigerant leakage problem according to the traditional packing seal; [0004] ②Because of the manufacturing accuracy, there is unavoidable eccentricity between the valve cover and the valve seat. When the valve disc and the valve body are not concentric, the sealing p...

AI Technical Summary

Problems solved by technology

[0003] ① Due to its structure, there must be a sliding sealing point between the valve stem and the valve stem sleeve, but it is difficult to solve the refrigerant leakage problem according to the traditional packing seal;

[0004] ②Because of the manufacturing accuracy, there is unavoidable eccentricity between the valve cover and the valve seat. When the valve disc and the valve body are not concentric, it will affect the sealing performance of the valve when it is closed, and leakage will occur, and the valve disc is easily worn by friction, which affects the use. life;

[0005] ③The valve seat and bonnet of the welded valve are all welded structures, with many solder joints, the quality is difficult to control, and leakage often occurs;

[0006] ④The cast steel valve is difficult to control the shrinkage porosity and shrinkage cavity, especially after being used for a period of time after being corroded, it is prone to leakage

The above situations will cause serious losses to production in the slightest, and endanger the lives and property of the people in severe cases.

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