Double-valve-body drain valve and assembly method thereof

Abstract

The invention relates to a double-valve-body drain valve and an assembly method thereof. The double-valve-body drain valve and the assembly method are characterized in that an outer valve body and aninner valve body are further included, the interior of the outer valve body is provided with an inlet passage, an inlet anti-flushing groove, an outer valve body middle cavity, an outlet anti-flushinggroove and an outlet passage, the inlet anti-flushing groove is of a circular arc groove structure and is arranged between the inlet passage and the outer valve body middle cavity, the outlet anti-flushing groove is of a circular arc groove structure and is arranged between the outlet passage and the outer valve body middle cavity, the inner valve body is of a bucket-shaped structure and is transversely arranged in the outer valve body middle cavity, and the inner valve body can rotate in the outer valve body middle cavity by 360 degrees with respect to the inner valve body axis; and a floating ball, a connecting rod, a valve flap and a valve seat are all arranged in an inner valve body middle cavity, the valve seat is arranged at the bottom of the outlet side of the inner valve body middle cavity, a water inlet hole is formed in the end surface of the inlet side of the inner valve body, the water inlet hole communicates with the inlet anti-flushing groove, and an aligning block is arranged at the position of an outer circle of the inner valve body. The double-valve-body drain valve and the assembly method have the advantages that the installation orientation is not affected, thesteam leakage resistance is good, and the assembly method has high precision and high qualification rate.

Description

technical field [0001] The invention relates to a steam trap, in particular to a double valve body steam trap and an assembly method thereof. Background technique [0002] Steam trap is a kind of valve, also known as steam trap, drain valve, which is to discharge the condensed water in the steam system as soon as possible, and at the same time automatically prevent the leakage of steam to the greatest extent. There are many types of steam traps, each with different performances. Among them, mechanical steam traps include bucket type and floating ball structure. What they have in common is that during use, the buoyancy of condensed water pushes the bucket body or floating ball to rise. And down, the barrel or float must be installed vertically in the inner cavity of the valve. The disadvantage is: when the valve is installed, it can only be installed in the specified direction. Installation is difficult, and this type of trap cannot be used in severe cases. Contents of the...

AI Technical Summary

Problems solved by technology

There are many types of steam traps, each with different performances. Among them, mechanical steam traps include bucket type and floating ball structure. What they have in common is that during use, the buoyancy of condensed water pushes the bucket body or floating ball to rise. And down, the barrel or float must be installed vertically in the inner cavity of the valve. The disadvantage is: when the valve is installed, it can only be installed in the specified direction. Difficult to install, this type of trap cannot be used in severe cases

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