Magnetic antitheft valve

Abstract

The invention relates to a magnetic antitheft valve, which comprises a valve rod and also comprises a valve cap, a press cover and a key, wherein a valve cap groove is uniformly distributed in the upper end surface of the valve cap, a pin and a first permanent magnet are arranged in the valve cap groove. A valve rod matching element is arranged in the press cover, a valve rod matching groove and a groove are arranged in the lower end surface of the valve rod matching element, a first blind hole groove and a second blind hole groove are symmetrically distributed in the upper end surface of the press cover, a second permanent magnet is embedded in the key, and the magnetism of the second permanent magnet is greater than that of the first permanent magnet. The magnetic antitheft valve provided by the invention can be in a split structure, the part processing and assembly can be convenient, the maintenance cost is low in the use process, and only corresponding damaged parts need to be replaced. A spring of the existing magnetic valve is omitted, and the problem that the valve cannot work because of the spring failure is avoided. The guarding and maintenance by specially-assigned persons is not needed, the use is convenient, the magnetic antitheft valve is very suitable for being installed and used in occasions including residential subdistricts, outdoors and the like, and the implementation effect is good.

Description

technical field [0001] The invention relates to a valve, in particular to an anti-theft valve, which uses a magnetic tool to unlock. Background technique [0002] Valves are key control components in fluid delivery systems, with functions such as cut-off, regulation, flow diversion, reverse flow prevention, pressure stabilization, flow diversion, or overflow and 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. [0003] In the existing valve structure, the rotation of the hand wheel generally drives the valve plate to move up and down, so as to realize the closing or opening of the valve. However, many of such valves are installed in living quarter...

AI Technical Summary

Problems solved by technology

Chinese patent CN200520068586.1 discloses a structure in which magnetic pins are installed on the side wall. However, when machining holes on the side wall, not only is it difficult to clamp, but the machining accuracy is limited; moreover, there are holes left on the side wall, which are exposed to sand in the wild. Dust, rain damage, and sometimes man-made damage, but it does not play a substantial role

There are many similar structures, but such structures have the following defects: First, after a long time, the spring coefficient of the spring is easy to change and become invalid; second, the magnet material is relatively brittle, with low mechanical strength, improper operation or long The use of time will also cause the magnet to break, causing the locking mechanism to fail; the third is that the key is mainly used to overcome the resistance of the spring, because two magnets are used to overcome the resistance of the spring to realize unlocking after their magnetic repulsion, but because the key is kept Improper, resulting in weakened magnetism, unable to overcome the spring resistance, and eventually lead to unlocking failure sometimes occurs

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