Low-vibration high-precision dynamic flow balance valve

Abstract

The invention discloses a low-vibration high-precision dynamic flow balance valve, and relates to the field of balance valves. The valve comprises a valve body and a valve element assembly, the valve element assembly comprises a valve element, a valve element shell and a locking screw, an inner hole is formed in the valve body, the valve element shell is arranged in the inner hole, the locking screw is in threaded connection with the inner wall of the upper end of the valve element shell, the buffering assembly is arranged in the valve element shell, and the adjusting assembly is arranged on the valve element. The buffering assembly comprises a first main spring, a second main spring, a limiting block, a center spring and a side spring, the adjusting assembly comprises variable holes, round holes and a movable part, and the valve element is provided with the multiple variable holes and the multiple round holes, so that distribution of water flow and the pressure difference is facilitated, the acting force of the valve liner is reduced, and vibration is prevented; a multi-stage pressure reduction structure is formed at the matched position, and unbalanced force of fluid on the valve element and vibration of the valve element are reduced.

Description

technical field [0001] The invention relates to the field of balance valves, in particular to a low-vibration high-precision dynamic flow balance valve. Background technique [0002] Dynamic flow balance valve is also known as self-operated flow control valve, self-operated balance valve, constant flow valve, automatic balance valve, etc. It automatically changes the resistance coefficient according to the change of the system operating conditions. Within a certain pressure difference range, it can be effectively Control the flow through to maintain a constant value, that is, when the pressure difference before and after the valve increases, the flow can be kept from increasing through the automatic closing action of the valve. On the contrary, when the pressure difference decreases, the valve automatically opens and the flow Still remain constant. [0003] In the prior art, during the operation of the balance valve, after long-term operation, the control progress is deteri...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a low-vibration high-precision dynamic flow balance valve to solve the problem that the control progress of the balance valve will deteriorate after long-term operation in the process of working, and the control of the variable hole is poor. When the working pressure difference is exceeded, the matching gap between the valve liner and the valve housing is not easy to control. When the working pressure difference is exceeded, the valve liner vibrates greatly and the noise is large.

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