CN2033294U - Secondary breaking device for water-bearing fine coal from coal-washing machine - Google Patents

Abstract

The utility model discloses a secondary crushing device for clean coal with water, used on a coal-washing machine, and comprising a grading-shunting sieve (1) and a clean coal crusher (2). The grading-shunting sieve (1) is directly connected to the clean coal overflow outlet of the coal-washing machine through pipe-lines (5). The upper part of a coal water conveyor pipe (4) is connected with the bottom of the shunting sieve, while the lower part is connected with a coal water takeover bucket (3). The coarse coal delivery outlet (6) of the shunting sieve is directly connected with the feed inlet of the secondary clean coal crusher (2). With the advantages of simple manufacturing process and labour saving, the secondary crushing device can raise the clean coal yield, reduce the ash content, provide coking coal of good quality and avoid unnecessary waste.

Description

The band crystal coal second-time breakage equipment that is used for coal washer

The utility model belongs to the coal washer optional equipment, is specifically related to the equipment that gained cleaned coal band water carries out second-time breakage after the middle-size and small-size coal washer washing.

In known technology, it is below the 50mm that the coal washer of general small-sized coke-oven plant institute adapted requires the optimal granularity of the raw coal of washing, so just can make cleaned coal the yield height, to contain ash content few, is 0-5mm but coking then requires the cleaned coal optimal granularity.For solving this contradiction, people adopt following two kinds of ways at present: a kind of way is to carry out washing after the disposable 0-15mm of the being broken for granularity of raw coal, gained cleaned coal dehydration back is directly into stove coking, yet do the yield (the cleaned coal yield reduces 5-10%) that will certainly influence cleaned coal like this, and contain the ash content height; Second kind of way is that raw coal is broken for below the granularity 50mm for the first time, after face is landed in gained cleaned coal dehydration after the washing, the artificial installation of secondary is crushed to the coking desired particle size, but like this because high humidity, the power consumption of coal are also big, has caused unnecessary manpower, power waste.

In order rationally to solve above-mentioned contradiction, overcome the shortcoming of prior art, the ad hoc the utility model of having counted.

The utility model is to realize like this, directly connect classification shunting sieve at the cleaned coal overfall place of coal washer, here part water and granularity can be isolated by the cleaned coal below 5mm, remaining granularity is then imported the cleaned coal disintegrating machine greater than the cleaned coal of 6mm and is carried out second-time breakage, the cleaned coal granularity is reached below the 5mm, be collected to together to go again after the reception of coal water struggles against and dewater.

Describe structure of the present utility model and operation principle in detail below in conjunction with accompanying drawing:

Accompanying drawing is a structural representation of the present utility model, it is that classification shunting sieve (1) and the cleaned coal disintegrating machine (2) of 6mm formed by sieve aperture, this classification shunting sieve (1) directly is connected the cleaned coal overfall place of coal washer by pipeline (5), cleaned coal and water that coal washer is selected at first sieve, granularity below 5mm cleaned coal and part moisture from coming out, the following coal water conveyance conduit (4) of shunting sieve bleeds, import coal water again and receive bucket (3), connect shunting sieve bottom on the pipeline (4), connect coal water down and receive bucket (3); One side of shunting sieve is provided with coarse coal delivery outlet (6), be connected with the charge door of cleaned coal disintegrating machine (2), like this, bulk cleaned coal (granularity is greater than 6mm) after sieving and part water enter disintegrating machine (2) from delivery outlet (6) and carry out second-time breakage, brokenly receive bucket (3) for the following sieve plate (7) of the granularity 5mm coal water that bleeds from the disintegrating machine bottom, therefore, the tube (8) under the disintegrating machine sieve plate (7) must be communicated with coal water reception bucket (3).

Cleaned coal through above-mentioned shunting sieve and second-time breakage all reaches below the granularity 5mm, not only obtained the required optimal granularity cleaned coal of coking, and improved the cleaned coal yield, reduced ash content, great amount of manpower, power have been saved simultaneously, reduced unnecessary consumption (with carrying out second-time breakage again and relatively save power 50% after the dehydration), also simplified the work flow of coking with cleaned coal.

Claims (2)

1, a kind of band crystal coal second-time breakage equipment that is used for coal washer comprises classification shunting sieve (1) and cleaned coal disintegrating machine (2), of the present utility modelly is characterised in that (1) is sieved in this classification shunting is directly to be connected coal washer cleaned coal overfall place by pipeline (5); Connect shunting sieve bottom on the coal water carrier pipe (4) under the shunting sieve, be connected to coal water down and receive bucket (3); The coarse coal delivery outlet (6) of shunting sieve directly is connected on the charging aperture of cleaned coal disintegrating machine (2), and sieve plate (7) doffing (8) of disintegrating machine (2) receives bucket (3) with coal water and is communicated with.

2,, it is characterized in that the sieve aperture of above-mentioned classification shunting sieve is 6mm according to the described disintegrating apparatus of claim 1.