Pressure-adjustable magnetic liquid safety valve

Abstract

Provided is a pressure-adjustable magnetic liquid safety valve relating to the field of valves. The pressure-adjustable magnetic liquid safety valve includes a rotary knob (1), a valve body (3), keys (4 and 7), a rotating shaft (5), a permanent magnet (6), a pressure relief opening (8), a pole shoe (9), pole teeth (11) and a magnetic liquid (12). According to the valve, a magnetic liquid sealing technology is utilized, the permanent magnet (6) provides a magnetic source and forms a magnetic loop together with the pole shoe (9), the rotary knob (1) and the valve body (3), so that magnetic liquid (12) is attracted to the pole teeth (11) to form a plurality of liquid sealing rings. By rotating the rotary knob (1), a distance from the pole teeth (11) to the inner upper end surface of the valve body (3) is adjusted, and then, different opening pressure values are determined. When an internal pressure of a container exceeds a preset value, the pressure is automatically relieved through the pressure relief opening (12). The valve is simple in structure, convenient to operate, capable of avoiding gas pollution, resistant to corrosion and high in reliability.

Description

technical field [0001] The invention relates to the field of valves, in particular to a pressure-adjustable magnetic liquid safety valve. Background technique [0002] The safety valve is a kind of opening and closing part, which is in a closed state under the action of external force. When the medium pressure in the connected equipment exceeds a certain pressure value, it can discharge the medium to the outside of the system to prevent the pressure balance of the medium in the equipment. Conventional pressure-adjustable safety valves often use a spring structure, and the pressure is adjusted by changing the compression of the spring. However, in some working conditions, due to the particularity of the medium, it often causes corrosion inside the valve body, resulting in the valve not working normally. Magnetic liquid is a nano-scale functional material, which consists of three parts, namely magnetic particles, surfactant and base carrier liquid. It has both the magnetic pro...

AI Technical Summary

Problems solved by technology

Conventional pressure-adjustable safety valves often use spring structures to adjust the pressure through changes in spring compression. However, in some working conditions, due to the particularity of the medium, it often leads to corrosion inside the valve body, resulting in the valve not being used normally.

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