Valve with excellent flow limiting and sealing functions

Abstract

The invention discloses a valve with excellent flow limiting and sealing functions. The valve comprises a valve body; the valve body is of a cylindrical structure; two trapezoid grooves communicating with the outer surface of the valve body are symmetrically formed in the inner wall of the valve body; a water outlet connecting pipe and a water inlet connecting pipe respectively communicating with the two trapezoid grooves are symmetrically connected with the outer surface of the valve body; the interior of the valve body is sleeved with a thread rod; the thread rod is of a hollow structure; the top part of the thread rod penetrates out of a thread groove formed in the valve body and is connected with a turnplate; the center of the top part of the turnplate is connected with a rotary column; the bottom part of the rotary column is connected with a first screw; the tail end of the first screw is inserted into the thread rod and is connected with the bottom part of the inner cavity of the thread rod through a rotating shaft; two second screws are arranged in the thread rod; and the two second screws are respectively located at the front side and the rear side of the first screw and are both in thread engagement with the first screw. The valve disclosed by the invention has effects of regulating and flow limiting, and the trapezoid grooves can be blocked, so that the airtightness of the valve is good, and the performance of the valve is more excellent.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to a valve with excellent functions of flow limiting and sealing. Background technique [0002] Valves are the control components in the fluid delivery system, with the functions of cut-off, adjustment, flow diversion, reverse flow prevention, pressure stabilization, flow diversion and overflow pressure relief. Valves used in fluid control systems range from the simplest cut-off valves to various valves used in extremely complex automatic control systems, with a wide variety of varieties and specifications. Valves can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. Valves are also divided into cast iron valves, cast steel valves, stainless steel valves, chrome molybdenum steel valves, chrome molybdenum vanadium steel valves, duplex steel valves, plastic valves and non-standard cu...

AI Technical Summary

Problems solved by technology

[0003] For example, one of the flow-limiting valves has a flow-limiting function. For example, the patent CN 203036019 U discloses a flow-limiting stop valve, in which a flow-limiting chamber, a flow-limiting valve and a throttle port are arranged to achieve the flow-limiting effect. purpose, but this structure is too simple, the technical means used are not accurate enough, resulting in insufficient disclosure, so that the flow limiting effect of the valve is not excellent

Images