Magnetic field screening machine with stable discharging unit

Abstract

The invention provides a magnetic field screening machine with a stable discharging unit. The magnetic field screening machine comprises a feeding barrel, a mineral classifier, a sieving piece, a box body and the discharging unit, wherein the discharging unit comprises a concentrate storage bin, a tailings storage bin, a tailings pipe, a pressure sensor, a concentrate pipe, a discharge valve, a backflushing water pipe and a flushing valve, the discharging valve is arranged on the concentrate pipe, the pressure sensor is arranged at the bottom in the concentrate storage bin, the water outlet end of the backflushing water pipe is positioned close to the pressure sensor in the concentrate storage bin, the flushing valve is arranged on a pipeline part, positioned outside the concentrate storage bin, of the backflushing water pipe, when the pressure sensor is buried by accumulated minerals, the flushing valve is switched on, the accumulated minerals on the pressure sensor can be flushed cleanly by utilizing high-pressure water flow, the discharging valve can be ensured to be accurately controlled by the pressure sensor to switch on and off, and the working efficiency of the magnetic field screening machine can be improved.

Description

technical field [0001] The invention relates to a magnetic field screening machine, in particular to a magnetic field screening machine with a stable discharge unit. Background technique [0002] In recent years, the cost and price of energy resources such as coal mines and iron ores in my country have been getting higher and higher, especially the transportation costs have increased year by year. The use of hydraulic pipelines to transport solid materials was born and has been used in the long-distance transportation of iron ore and other mineral resources. Compared with other transportation methods such as railways and highways, pipeline transportation has the advantages of less infrastructure investment, no or less land occupation, It does not pollute the environment, can realize continuous operation, and the transportation cost is only 1 / 6 to 1 / 10 of that of railways and highways, etc., realizing the sustainable development of economy and environment. In the field of pi...

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Problems solved by technology

[0003] The invention mainly aims at the problem that the pressure sensor installed in the concentrate storage bin of the magnetic field screening machine is often buried under pressure by accumulated ore, so that it is impossible to accurately control the opening and closing of the discharge valve according to the actual reserve of the concentrate, and innovatively proposes a stable discharge valve. The magnetic field screening machine of the unit, by installing a backwash water pipe in the concentrate storage bin and a flush valve on the backwash water pipe outside the bin, and controlling the opening of the flush valve when the pressure sensor is buried by the accumulated ore, using high-pressure water flow Clean the accumulated ore on the pressure sensor to ensure that the pressure sensor can accurately sense the actual pressure brought by the concentrate reserves in the concentrate storage bin, and then accurately control the opening and closing of the discharge valve, improving the working efficiency of the magnetic field screening machine

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