Valve with filter screen convenient to replace

Abstract

The invention relates to the field of valves, in particular to a valve with filter screen convenient to replace. The valve with filter screen convenient to replace comprises a valve body, a fixing pipe, a connecting structure, an adjusting structure, an alarming structure, a filtering structure, a mounting structure and a limiting structure. The mounting structure is arranged, so that the filtering structure is conveniently drawn out from the inside of the fixing pipe and can be replaced conveniently; the limiting structure is matched, so that the mounting structure is limited and fixed afterthe filtering structure is mounted, and then normal work of the filtering structure is guaranteed; the adjusting structure is arranged, therefore, the air pressure required by pressure relief can be adjusted according to actual use, the valve body can be directly and completely closed so as to facilitate follow-up work, and the pressure relief of the adjusting structure can further drive the alarming structure to work; and the alarming structure can work to alarm in time when the filtering structure is blocked, so that it is convenient for maintainers to carry out maintenance, and accidents are avoided.

Description

technical field [0001] The invention relates to the field of valves, in particular to a valve for convenient filter screen replacement. Background technique [0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, adjust and control the parameters (temperature, pressure and flow) of the conveying medium. According to its function, it can be divided into shut-off valve, check valve, regulating valve and so on. The valve is a control component in the fluid delivery system, which has functions such as cut-off, adjustment, flow diversion, reverse flow prevention, pressure stabilization, flow diversion or 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 ...

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Problems solved by technology

[0003] Generally, in order to play the role of insurance on some high-pressure equipment, safety valves are installed on the equipment for pressure relief protection. However, at present, the gas in some high-pressure equipment contains impurities inside. In order to prevent these impurities from being directly discharged into the atmosphere, causing atmospheric pollution Generally, a filter is installed on the safety valve for interception and filtration, but when the filter is clogged, the safety valve will not be able to relieve pressure, and there may be potential safety hazards, and the installation and replacement of the filter is extremely inconvenient

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