Electromagnetic automatic unloading device of coal slime press filter plate of coal washing plant

Abstract

The invention relates to the field of automatic unloading of coal slime of coal slime press filter plates of coal washing plants and discloses an electromagnetic automatic unloading device of a coal slime press filter plate of a coal washing plant. The device is composed of a dragging hammer, a hammer surface, an electromagnetic coil device, a relay module, a PLC station, press filter brackets, afilter plate right handle, a filter plate and a filter plate left handle, wherein the dragging hammer is mounted on a press filter bracket; the electromagnetic coil device is fixed under the side of the filter plate; the device is controlled to be powered on by the PLC station through the relay module; when the PLC station controls the relay module to be closed, an electromagnetic coil is powderedon to generate powerful electromagnetic force; the dragging hammer and the electromagnetic coil device attract each other due to the powerful electromagnetic force and collide with each other; the dragging hammer drives the filter plate to generate one impact; when the PLC station controls the relay module to be powered off, the electromagnetic force of the electromagnetic coil device disappearsdue to power failure; the filter plate falls due to the self gravity and generates one impact again; the two impacts are enough to shake the coal slime on the filter plate down, and the coal slime onthe coal slime press filter plate is automatically unloaded.

Description

technical field [0001] The invention relates to the field of automatic unloading of coal slime from a filter plate of a coal slime filter press in a coal washing plant, in particular to an electromagnetic automatic unloading device for a filter plate of a coal slime filter press in a coal washing plant. Background technique [0002] At present, most coal washing plants use dense medium washing process. Whether it is a coking coal washing plant or a steam coal washing plant, the slime pressure filtration in the slime water treatment is the last link of the coal washing plant production process, and it is also the realization of the coal washing plant slime water closed circuit. The key link of the cycle, the most important equipment is a kind of solid-liquid separation equipment, which is generally selected in the coal washing plant for treatment; if there is a problem in this production link, the first is to seriously affect the treatment capacity of the coal slime water, and...

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Problems solved by technology

[0002] At present, most coal washing plants use dense medium washing process. Whether it is a coking coal washing plant or a steam coal washing plant, the slime pressure filtration in the slime water treatment is the last link of the coal washing plant production process, and it is also the realization of the coal washing plant slime water closed circuit. The key link of the cycle, the most important equipment is a kind of solid-liquid separation equipment, which is generally selected in the coal washing plant for treatment; if there is a problem in this production link, the first is to seriously affect the treatment capacity of the coal slime water, and the second is to Affect the quality of circulating water in the coal washing plant, thereby affecting the production of the entire coal washing plant, especially for those coals with a large amount of mud, the nature of the coal is easy to muddy, resulting in an increase in the amount of slime water treatment, and the muddy matter is easy to block the box The gaps in the filter cloth of the filter press will increase the pressing time of the slime filter cake and reduce the processing capacity. At the same time, the pressed filter cake will easily adhere to the filter cloth of the filter press, making the filter cake formed after pressing It is not easy to fall off. When the pull plate trolley of the box-type filter press pulls the filter plate, the operator needs to use a rod to shovel the filter cake adhered to the filter cloth, which increases the labor load of the operator. No matter the small or medium coal washing plant It is still a large coal washing plant with a few sets of filter presses, or even dozens of sets, resulting in an increase in the number of operators, and the increase in the number of operators will result in increased safety risks and increased labor costs. For this disadvantage, the present invention proposes an electromagnetic automatic unloading device for the filter plate of the slime filter press in the coal washing plant

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