Three-way valve convenient for air tightness detection

Abstract

The invention relates to the field of three-way valves, in particular to one three-way valve convenient for air tightness detection. The three-way valve comprises a main body mechanism, a control mechanism, a detection mechanism, a filtering mechanism and a descaling mechanism. According to the three-way valve convenient for the air tightness detection, waste water passes through a first filter net and a second filter net correspondingly when entering other two outlets through an inlet, the first filter net and the second filter net filter large-particle impurities contained in the waste water, the drain contamination index is made to be better, when the situation that impurities block the first filter net and the second filter net appears, the first filter net and the second filter net are blocked to make the pressure of the middle portion of a three-way valve body be increased, pneumatic balls inside two moving slots perform expansion to squeeze installation rods to make the installation rods rotate around rotating shafts, and then nozzle cleaners are driven to remove the impurities in the first filter net and the second filter net, so that the situation of valve body blocking is disposed in time when the waste water contains more impurities, and the three-way valve convenient for the air tightness detection is made to be more convenient to use.

Description

technical field [0001] The invention relates to the field of three-way valves, in particular to a three-way valve which is convenient for testing air tightness. Background technique [0002] Three-way valve, the valve body has three ports, one in and two out, (left in, right and bottom out) and ordinary valves are different in that there is an outlet at the bottom, when the internal spool is in different positions, the outlets are different, such as the spool When it is at the bottom, the left and right are connected. When the spool is at the top, the right outlet is blocked, and the left and the lower port are connected. Because the left mouth and the right mouth are not on a horizontal line. When the high-speed heater is released in an emergency, the valve is closed and the water is bypassed. At present, the three-way valve is prone to aging during use, resulting in poor airtightness, so the airtightness test of the three-way inside becomes very critical, so usually the ...

AI Technical Summary

Problems solved by technology

At present, the three-way valve is prone to aging during use, resulting in poor airtightness, so the airtightness test of the three-way inside becomes very critical, so usually the traditional three-way valve has a device for airtightness test

[0003] However, when the existing three-way valve is used in the process of sewage treatment, since the sewage contains many impurities, direct discharge may cause the sewage to fail to meet the standard. At the same time, further, in the process of sewage discharge, when there are many impurities , it is very easy for the three-way valve body to be blocked, and it is extremely inconvenient to handle at this time; on the other hand, the traditional three-way valve usually needs other tools when testing the air tightness, which is very inconvenient to use

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