Refrigerating valve

Abstract

The valve is composed of the valve body, valve cap, valve shaft, valve petal and valve rod cover. The inlet and outlet pipes are fixed on the valve body. The valve rod cover is set on the cap. The valve petal is set at the front end of the shaft. The front end of the valve shaft and sealing ring are connected. The valve body is connected with the valve cap through the bolt and sealed by the '0' style sealing ring. The valve shaft is sealing connected with the valve petal, the cone interface forms the converse sealing. The sealing ring is settled between the sealing cap and valve rod cover, and between the valve shaft and valve cap.

Description

Technical field [0001] The present invention relates to a valve, especially a steel valve suitable for the control of all common refrigerants and non-corrosive gases and liquids. Background technique [0002] Valves are widely used in refrigeration, freezing, air conditioning, heat pump, chemical industry, petroleum and other industries. At present, most of the steel valves used for general refrigerants and non-corrosive gas and liquid control adopt traditional structure valves. Commonly used valves such as Globe valves, regulating globe valves, check valves, stop check valves, etc., due to their structure, there is a sliding sealing point between the valve stem and the valve body, which is difficult to solve the sealing problem of the refrigerant. Due to the manufacturing process, The valve stem may be eccentric. If the valve disc is not concentric with the valve body, it will affect the sealing performance of the valve when it is closed, and leakage will occur, and the val...

AI Technical Summary

Problems solved by technology

[0002] Valves are widely used in refrigeration, freezing, air conditioning, heat pump, chemical industry, petroleum and other industries. At present, most of the steel valves used for general refrigerants and non-corrosive gas and liquid control adopt traditional structure valves. Commonly used valves such as Globe valves, regulating globe valves, check valves, stop check valves, etc., due to their structure, there is a sliding sealing point between the valve stem and the valve body, which is difficult to solve the sealing problem of the refrigerant. Due to the manufacturing process, The valve stem may be eccentric. If the valve disc is not concentric with the valve body, it will affect the sealing performance of the valve when it is closed, and leakage will occur, and the valve disc will be severely worn by friction, which will affect the service life. Small and medium-sized valve seats are generally made of forged steel. structure, while the valve seat of larger size valves generally adopts steel pipe structure, and the connection between the valve seat and the pipeline adopts flange connection, which is prone to leakage

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