High-precision dynamic flow balance valve

Abstract

The invention relates to a flow control valve which is mainly applied to the field of air conditioner, heating and water supply systems where flow balancing is needed, in particular to a high-precision dynamic flow balance valve. The high-precision dynamic flow balance valve comprises a valve element component and a valve cover mounted on a valve body, the valve element component is composed of a valve element, a valve element shell, a spring and a locking screw, the valve element is provided with an end face fixing hole and side flow channels which are symmetrical on two sides, and each side flow channel comprises two evenly-distributed oval holes and two or four evenly-distributed variable holes, wherein the two fixed oval holes are communicated with two symmetric variable holes in a one-to-one mode. The high-precision dynamic flow balance valve is simple in structure, small in size, good in valve element rigidity, convenient to machine and capable of saving cost.

Description

technical field [0001] The invention relates to a flow control valve, which is mainly used in fields requiring balanced flow, such as air conditioning, heating, and water supply systems, and in particular relates to a high-precision dynamic flow balance valve. Background technique [0002] At present, a large number of dynamic flow balance valves of foreign imported brands are generally assembled in one piece. This high-precision automatic flow balance valve is not convenient for later inspection, maintenance, and cleaning. After long-term operation, the control accuracy will decrease and energy consumption will increase; while domestic The initial working pressure of the dynamic flow balance valve produced by the manufacturer is generally high, and the flow accuracy is low. The same problem exists in the later inspection, maintenance and cleaning, and the reliability is poor. [0003] In the side opening method provided in Chinese patent CN 1888498A, the flow coefficient of...

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Problems solved by technology

[0002] At present, a large number of dynamic flow balance valves of foreign imported brands are generally assembled in one piece. This high-precision automatic flow balance valve is not convenient for later inspection, maintenance, and cleaning. After long-term operation, the control accuracy will decrease and energy consumption will increase; while domestic The initial working pressure of the dynamic flow balance valve produced by the manufacturer is generally high, and the flow accuracy is low. The same problem exists in the later inspection, maintenance and cleaning, and the reliability is poor.

[0003] In the side opening method provided in Chinese patent CN 1888498A, the flow coefficient of the side flow hole used for calculation is a fixed value, and the flow coefficients of different positions of the side flow hole should be different, so high-precision flow control cannot be g...

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