High-precision flow regulating valve with lock

Abstract

The invention discloses a high-precision flow regulating valve with a lock, which comprises a valve body, a valve cover and a valve stem, wherein two ends of the valve body are respectively provided with an inlet and an outlet, the inlet and the outlet can be communicated through a valve cavity in the valve body, the interior of the valve body is provided with a throttle, the valve cover is tightly connected with the valve body, the valve stem tightly penetrates in the valve cover and can move up and down along the valve cover, the lower end of the valve stem is provided with a valve clack which corresponds to the throttle and can open or close the throttle with the up-and-down movement of the valve stem, the bottom of the valve clack is provided with a tapered ring surface which is matched with the throttle and is provided with a larger diameter on the top and a smaller diameter at the bottom, a lock assembly which can lock the position of the valve stem and can be unlocked by the corresponding key is arranged between the top end of the valve stem and the valve cover, and a flow display component which can display the flow of the throttle in real time is arranged on the valve cover. The high-precision flow regulating valve with a lock provided by the invention has a simple structure, is convenient to manufacture, has linearly flow-regulating and locking functions and can realize high-precision flow regulation.

Description

technical field [0001] The invention relates to a throttling element, in particular to a high-precision flow regulating valve with a lock. Background technique [0002] There are many manual flow control valves on the market now. The sealing form between the disc in the valve body and the sealing surface on the throttle port is a simple flat seal. There is no relationship between the flow value of this flow control valve and the displacement of the disc. There is no linear relationship, the flow regulation performance is very poor, and it is not convenient to measure and control the flow of the flow regulating valve; at the same time, this kind of flow regulating valve has no locking device, which is easily affected by misoperation by unrelated personnel, and it is difficult to effectively control the flow of the pipeline. control. [0003] There are also some lockable high-precision flow regulating valves with flow display. The flow display method is that the inner ring is...

AI Technical Summary

Problems solved by technology

[0002] There are many manual flow control valves on the market now. The sealing form between the disc in the valve body and the sealing surface on the throttle port is a simple flat seal. There is no relationship between the flow value of this flow control valve and the displacement of the disc. There is no linear relationship, the flow regulation performance is very poor, and it is not convenient to measure and control the flow of the flow regulating valve; at the same time, this kind of flow regulating valve has no locking device, which is easily affected by misoperation by unrelated personnel, and it is difficult to effectively control the flow of the pipeline. control

[0003] There are also some lockable high-precision flow regulating valves with flow display. The flow display method is that the inner ring is provided with a scale, and the flow value is indicated by the position of the bottom edge of the outer ring cap and the position of the inner ring scale. , the outer ring rotates with the valve stem and can slide up and down, so when reading the flow value, the line of sight must be placed at the level of the outer ring, otherwise it will affect the accuracy of the flow value reading

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