Stop valve of meter

Abstract

The invention discloses a stop valve of a meter, relating to the field of flow control parts. The stop valve comprises a valve boy, a valve core arranged in the valve body, a valve rod, a valve coverused for connecting the valve core with the valve body and a handle used for controlling the valve core. The interior of the valve body is equipped with a water inlet and a water outlet, both of whichare located on a horizontal line. A valve groove higher than the water inlet is arranged between the water inlet and the water outlet. One side of the valve groove is equipped with a water dischargehole horizontally communicating with the water outlet. The middle of the valve groove is equipped with the water inlet vertical to the horizontal plane. A water intake hole communicates with the waterinlet through an oblique water inlet pipe. The valve core is located in the valve groove and coaxial to the water inlet hole. The interior of the valve body is equipped with a through groove which communicates with the valve groove and is used for placing the valve rod. The vale rod is equipped with a sealing part used for blocking the through groove and the valve groove. Therefore, the change amount of water flows during an interception process is increased, which brings convenience for operators to precisely control flow amount. As a result, accuracy of an experiment is increased.

Description

technical field [0001] The invention relates to the technical field of flow control parts, in particular to an instrument cut-off valve. Background technique [0002] The instrument globe valve is the instrument needle valve, which is an important part of the instrument measurement pipeline system. There are mainly globe valves and ball valves, which are mainly used to open or cut off the pipeline passage. The outer surface of the instrument needle valve is also corroded by the atmosphere, and the general steel materials are protected by painting. [0003] The instrument needle valve is an important part of the instrument measurement pipeline system, mainly including globe valves and ball valves, and its function is to open or cut off the pipeline passage. The ferrule-type instrument valve has the advantages of convenient installation and disassembly, tight connection, good fire prevention, high explosion-proof and pressure resistance, and good sealing performance. It is an...

AI Technical Summary

Problems solved by technology

[0008] The inlet and the outlet are connected horizontally, and the valve core needs to rotate several circles of the valve circle to completely cut off the water flow. During the cut-off process, due to the decrease of the flow area and the increase of the flow rate, the flow rate changes little during the cut-off process. In the experiment, etc. When the flow rate needs to be precisely controlled, if the operator closes the operation slowly and the water flow is released more than expected, it will have a greater impact on the flow rate, which will greatly affect the accuracy of the experiment

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