Annular float valve core type drain valve

Abstract

The invention provides an annular float valve core type drain valve which comprises a valve body, a valve base, a downtake pipe and an annular float valve core. The annular float valve core type drain valve is characterized in that the upper end of the valve base is connected with the upper end of the valve body; the upper end of the downtake pipe is connected with the upper end of the valve base; the annular float valve core is arranged between the valve base and the downtake pipe. The annular float valve core type drain valve is simple in structure and reliable in performance; only the four parts exist in all, so that the manufacture, assembly, use and maintenance costs are low; the opening and closing buoyancy and gravity of the annular float valve core are not influenced by backpressure magnitude, and the annular float valve core cannot be locked by overhigh pressure difference at an inlet/outlet even if the sectional area of a drain hole is quite large, so that the annular float valve core type drain valve has the advantages of high water drainage capacity, continuous drainage, capability of discharging water without steam, low use fault rate and long service life.

Description

technical field [0001] The invention relates to a drain valve, in particular to an annular float valve core type drain valve. Background technique [0002] Whether the action of the steam trap is normal or not, to a great extent affects the efficiency of steam delivery and use. In order to ensure efficient and good working conditions of steam, the condensed water in pipelines and steam-consuming equipment should be discharged out of the system through steam traps in time. At present, there are three types of steam traps commonly used: mechanical type, thermostatic type and thermodynamic type. Mechanical type steam trap: also called float type, using the density difference between condensed water and steam, through the change of condensed water level, the float drives the disc to open or close, so as to achieve the purpose of blocking steam and draining water. The supercooling degree of the mechanical trap is small, and it is not affected by the change of working pressure a...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the above contradictory problems in the prior art, and propose an annular float spool type

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