A noise reduction and impurity decompression regulating valve

Abstract

The invention provides a noise-reducing and impurity-removing pressure-reducing regulator valve, which includes a valve body, a valve cover and a valve stem. The valve body is provided with a valve chamber, a water inlet channel, a water outlet channel and a valve core installation port. The valve A valve seat is installed in the cavity, the valve cover is sealed and installed on the installation port of the valve core, the valve stem is slidably arranged in the valve cover, and also includes: a combined valve core mechanism, a guide bush and a piston unit. By using the traditional one-piece spool to separate the settings, when the outer spool is lowered and closed, the inner spool connects the water inlet channel with the decompression chamber, so that the fluid medium enters the decompression chamber to reduce the external pressure. The pressure difference between the upper and lower surfaces of the spool. When the outer spool rises to open the gate, the return unit connects the decompression chamber and the outlet flow channel, and the fluid medium in the decompression chamber flows to the outlet flow channel to compensate for the outlet flow channel. The internal gap, thereby eliminating the vortex phenomenon, and removing impurities at the root of the water outlet channel.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to a noise reduction and impurity removal pressure reducing regulating valve. Background technique [0002] The opening and closing part of the single-seat valve is the valve core. The valve core of the single-seat valve moves linearly with the valve stem to open or close the gate. When the valve core is lifted and closed, the valve core is affected by the pressure of the fluid medium on one end surface. A large pressure will be generated on it, which requires the valve core to resist, and when the valve core of the single-seat valve is lifted and opened, it is prone to eddy current phenomenon at the water outlet channel, which is noisy and easy to accumulate impurities here. [0003] Patent No. CN200810244539.6 discloses a single-seat regulating valve that can withstand a large pressure difference, including: a valve body, a valve cover and a valve stem. The valve body is provided w...

AI Technical Summary

Problems solved by technology

[0005] In view of the above problems, the present invention provides a noise-reducing and impurity-removing pressure-reducing regulating valve, which uses the traditional one-piece spool to be separately arranged, so that when the outer spool is lowered and closed, the inner spool will enter the water flow. The channel is connected to the decompression chamber, so that the fluid medium enters the decompression chamber to reduce the pressure difference between the upper and lower surfaces of the outer valve core. The fluid medium in the decompression chamber flows to the water outlet channel to compensate the gap at the end of the water outlet channel, thereby eliminating the eddy current phenomenon. When the valve core of the single-seat valve is lifted and opened, it is easy to generate eddy current phenomenon at the water outlet channel. The noise is loud, and the single-seat valve is easy to accumulate impurities at the root of the water outlet after it is closed for a long time

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