Axial flow type flow quantity control valve with dual filtering function

Abstract

The invention discloses an axial flow type flow quantity control valve with dual filtering functions, which solves the technical problems that the control valve of the prior art has poor performance and has no filtering function. The control valve comprises a valve body and a valve frame, wherein the valve frame is fixedly arranged in the valve body and is used for adjusting the flow quantity of the control valve, the valve body comprises a left valve body and a right valve body, the left valve body is provided with a flow inlet, the right valve body is provided with a flow outlet, the interior of the left valve body is provided with a flow disturbance cover, the flow disturbance cover is positioned between the flow inlet and the valve frame, one side, facing the flow disturbance cover, of the valve frame is provided with filtering holes, and the left valve body is provided with a blowoff port which can be opened and closed. When the fluid flowing into the valve body via the flow inlet of the left valve body flows through the flow disturbance cover, the speed reduction function is realized, and the large impurities in the fluid are settled under the action of gravity. When the fluid flows through the valve frame, the secondary filtering function is realized by the filtering holes, and the fine impurities are filtered. The impurities are settled in the filtering process, and after the blowoff port is opened, the impurities in the valve body are removed under the action of the water flow pressure. The filtering device is directly arranged in the valve body, and the structure of a flow passage is simplified.

Description

【Technical field】 [0001] The invention relates to a water valve, especially a flow control valve. 【Background technique】 [0002] With the continuous increase of urban buildings and the adjustment of enterprise scale, the problem of unbalanced or broken fluid flow in heating, cooling or power energy systems often occurs, and adjustable pressure differential valves and flow control valves have been widely used. application. However, the existing regulating valve has a complex structure, large resistance when fluid flows through the valve body, and low accuracy of flow regulation; and it does not have a filtering function, and a separate filter needs to be connected externally. [0003] The patent document with the publication number "CN2687458Y" discloses the structure of the vertical flow control valve as follows: a valve casing consisting of a water inlet valve body and a water outlet valve body sealingly connected with the water inlet valve body, inside the valve casing ...

AI Technical Summary

Problems solved by technology

The structure of the control valve is complicated, the manufacturing cost is high, the fluid resistance of the automatic valve core assembly is large, the pressure loss is large, the response sensitivity to the pressure difference is low, the flow control accuracy is low, and the impact of the valve disc is large during the movement, which is easy to cause Noise; when the flow control valve is manually adjusted, the flow resistance is large, the pressure loss is large, and it is easy to vibrate and generate noise

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