Filter press filter cake crushing system and method

Abstract

The invention relates to the technical field of coal preparation plant filter press filter cake crushing, in particular to a filter press filter cake crushing system and method. Following work systems are included, filter cakes of a multi-section pull-open type press filter impact on a rolling elastic connecting rod primary crushing device arranged in a press filter discharging chute through the dead load of the filter cakes, and primary crushing is finished; a coal leveler capable of doing the transverse movement back and forth is further arranged in the press filter discharging chute, and material stocking is prevented; the primarily-crushed materials enter a double-layer scraper conveyor, an upper layer of the double-layer scraper conveyor is used for storing materials, and a lower layer of the double-layer scraper conveyor is used for continuously conveying the materials through scraper blades; discharged materials of the double-layer scraper conveyor enter a low-speed disc feeder, and the discharging amount is controlled by adjusting the rotation speed and the discharging port opening degree; and the discharged materials enter a cutter tooth type double-roller crusher, cutter teeth used for cutting are arranged on rollers moving in the opposite directions, and blocky coal slime is crushed into fine-grain-level coal slime. According to the filter press filter cake crushing system and method, the technology layout, equipment selection and structural design are reasonable, material crushing is uniform, and the effect is reliable and stable.

Description

technical field [0001] The invention relates to the technical field of filter cake crushing of a filter press in a coal preparation plant, in particular to a filter cake crushing system of a filter press and a method thereof. Background technique [0002] The filter press is the gatekeeping equipment for the dehydration and recovery of fine-grained coal in the coal preparation plant. The filter cake of filter press slime has the characteristics of high viscosity, high moisture, and sticks into a cake. In order to make the filter press slime have a better sales price and channel, it generally needs to be crushed so that it can be evenly mixed into other coal preparation products Among them, for example, the filter cake of the flotation clean coal filter press is generally crushed and sold after being mixed with heavy separation block clean coal; the filter cake of the tailing coal slime filter press is broken and mixed with medium coal for sale; now coal preparation plants ge...

AI Technical Summary

Problems solved by technology

The filter cake of filter press slime has the characteristics of high viscosity, high moisture, and sticks into a cake. In order to make the press filter slime have a better sales price and channel, it generally needs to be crushed so that it can be evenly mixed into other coal preparation products. Among them, for example, the filter cake of the flotation clean coal filter press is generally crushed and sold after being mixed with heavy separation block clean coal; the filter cake of the tailing slime filter press is broken and mixed with medium coal for sale; now coal preparation plants generally use A single coal slime crusher breaks the pressure filter slime cake, as disclosed in the Chinese patent document CN104475211A "tooth knife type coal product breaker and clean coal and coal slime cake crushing and mixing method", the crushing parts of the crusher are used to The agglomerated coal slime is crushed and loosened, but there are the following problems: ①The method is not perfect, and the feeding port of the slime crusher is often blocked by the way of centralized feeding, resulting in low working efficiency of the slime crusher;② The press filter slime cake is not completely broken and loose, and may rebond into lumps in the subsequent transportation process

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