Large-flux oil suction filter capable of automatically alarming and relieving pressure

Abstract

The invention provides a large-flux oil suction filter capable of automatically alarming and relieving pressure. The oil suction filter comprises an access cover, a cylinder, filter element assemblies, a pressure-drop alarming switch, an oil inlet, a sewage discharging port, a pressure relief port, an oil discharging port, an oil conveying pipeline and a screw pump. According to the oil suction filter, under conditions that equipment is normally operated, the filter element assemblies and the flux of the screw pump are matched and oxide scale and other impurities are filtered out. Once a blocking condition occurs, a pressure drop is generated due to the pressure difference between the inside and the outside of the cylinder, the pressure drop switch gives an alarm and the a bypass is opened, thus avoiding blocking, avoiding air suction of the screw pump, prolonging the service lifetime of the filter and reducing the safe hazard largely. The oil suction filter is reasonable in structure, convenient to manufacture and obvious in application effect, and can be popularized and applied in production largely.

Description

technical field [0001] The invention belongs to heat treatment equipment, and specifically refers to the structural technology of the circulation system of quenching oil used in a heat treatment quenching tank. Background technique [0002] Large well-type quenching tank with internal and external oil cooling circulation, the cooling circulation of the quenching oil reaches tens of tons per hour, and the circulation system is generally equipped with screw pumps, Y-type filters, air coolers, pressure gauges, valves, etc. During the quenching process, due to the accumulation of sundries such as oxide scales, it often causes blockage of the oil suction port of the filter and air suction of the screw pump, resulting in frequent internal failures of the screw pump with a large flow rate, which seriously affects the normal operation of the equipment and causes the product to be quenched The quality is not up to par. Contents of the invention [0003] The technical problem to be...

AI Technical Summary

Problems solved by technology

During the quenching process, due to the accumulation of sundries such as oxide scales, it often causes blockage of the oil suction port of the filter and air suction of the screw pump, resulting in frequent internal failures of the screw pump with a large flow rate, which seriously affects the normal operation of the equipment and causes the product to be quenched The quality does not meet the requirements

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