Balanced type multipurpose valve with cut-off, non-return and adjusting functions

Abstract

The invention provides a balanced type multipurpose valve with cut-off, non-return and adjusting functions. The balanced type multipurpose valve comprises a valve body, end flanges, valve seats, valve clacks, valve decks, supports and valve rods, wherein valve rod nuts are arranged in the supports, and operating handles are installed on outer surfaces of upper portions of the valve rod nuts. The valve is characterized in that each valve clack is formed by a cut-off valve clack body and a non-return valve clack body, the lower portion of each valve rod penetrates through the corresponding valve deck and is fixed to the top end of the corresponding cut-off valve clack body in a hooked and combined mode, each non-return valve clack body is provided with a circular-cone-shaped head portion, the circular-cone-shaped head portion of each non-return valve clack body is matched with the lower portion of the corresponding valve seat to be sealed, the tail of each non-return valve clack body is inserted into the bottom of each cut-off valve clack body, the circular conical surface of the bottom end of each cut-off valve clack body is matched with the upper portion of the corresponding valve seat to be sealed, an axial balanced hole is formed in each cut-off valve clack body, L-shaped through holes enabling the balanced holes to be communicated with the outside of the valve body are formed in the tails of the non-return valve clack bodies, and inverted-L-shaped through holes enabling the balanced holes to be communicated with an inner cavity of the upper portion of the valve body are arranged in the bottoms of the valve rods. The cut-off, non-return and adjusting functions can be all achieved on the same valve, the valve has multiple purposes, pipeline operating space is saved, and production and manufacturing cost is reduced.

Description

technical field [0001] The invention relates to a balanced cut-off valve, in particular to a balanced cut-off and check-adjusting multi-purpose valve, which is widely used in industries such as petroleum and chemical industry. Background technique [0002] At present, cut-off regulating valves and check valves are often used in the production pipelines of petroleum, chemical and other industries, so as to realize the cut-off, adjustment and check functions respectively. The cut-off regulating valve and the check valve are respectively used, which occupy a large pipeline space, are inconvenient to operate, and increase the production cost. Contents of the invention [0003] The object of the present invention is to provide a multi-purpose balanced cut-off check valve with multiple functions. [0004] Technical scheme of the present invention is: [0005] A balanced cut-off and non-return regulating multi-purpose valve, comprising a valve body, end flanges arranged at the ...

AI Technical Summary

Problems solved by technology

The cut-off regulating valve and the check valve are respectively used, which occupy a large pipeline space, are inconvenient to operate, and increase the production cost

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