Low-noise regulating valve

Abstract

The invention provides a low-noise regulating valve which comprises a valve body, a sleeving valve element, a valve element and a valve rod, wherein the valve element is arranged in the valve body, and the valve element is connected with the valve rod. The low-noise regulating valve is characterized in that a valve seat in the valve body is provided with a multi-taper-hole sleeve, and the inner wall of the multi-taper-hole sleeve is matched with the valve element; the upper end of the multi-taper-hole sleeve is fixed through the sleeving valve element, and the side wall of the multi-taper-hole sleeve is provided with a plurality of taper holes; the diameters of the taper holes are gradually increased from the inner wall to the outer wall to form a taper of (1:10)-(1:1); the annular wall of the sleeving valve element is provided with a groove which can be used for injecting rubber; and the lower bottom surface of the valve seat in the valve body is transited by adopting a parabolic quadratic surface. According to the low-noise regulating valve, through the secondary noise reduction of the multi-taper-hole sleeve, the sound path noise reduction of the valve element with an elastic damping sleeve and the optimized sound source noise reduction of the valve seat, the noise treatment of multiple parts of the regulating valve is realized, and the regulating valve has the advantages of simple structure, easiness of replacement and convenience in use.

Description

[0001] technical field [0002] The invention relates to a low-noise control valve, in particular to a control valve capable of achieving noise control by installing a multi-tapered sleeve, a valve core with an elastic damping sleeve and an optimized valve seat, which belongs to the control valve noise control technology field. Background technique [0003] As a common actuator, the regulating valve is used to change the regulating parameters through the control signal sent by the regulator, and control the adjusted parameters within the range required by the process, so as to realize the automation of the production process. So far, the control valve is a very important part of the automatic control system, widely used in many important industries, such as petroleum, chemical and other industries. However, due to the complex internal structure of the valve body, the regulating valve produces noise during operation, which not only seriously affects the hearing of the staff,...

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at problems such as excessive noise, high cost of noise control, and poor consideration of its own structure and flow field characteristics in the noise control of existing control valves, and provides a control valve that can effectively control the noise of the control valve and is low in cost and conforms to Low noise regulating valve with flow field characteristics

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