CN218308403U

CN218308403U - Blending coal conveying device

Info

Publication number: CN218308403U
Application number: CN202221740630.9U
Authority: CN
Inventors: 马路平; 王秀彪; 田蜜; 吴志强; 杨金亮; 闫峰; 张瑞安
Original assignee: Hebei Xuyang Energy Co ltd
Current assignee: Hebei Xuyang Energy Co ltd
Priority date: 2022-07-06
Filing date: 2022-07-06
Publication date: 2023-01-17
Anticipated expiration: 2032-07-06

Abstract

The utility model discloses a blending coal conveying device, which comprises a blending coal tray, a discharging conveyor, an original transferring conveyor, a crusher, a feeding conveyor and a coal tower which are arranged in sequence according to the conveying direction of the blending coal, wherein a cross screen for screening the blending coal conveyed from the blending coal tray is arranged between the discharging conveyor and the original transferring conveyor, and the mesh aperture of the cross screen is 3mm; the oversize material discharge gate of cross sieve is connected with the front end pan feeding mouth of original transport conveyer, and the undersize material discharge gate of cross sieve is connected with newly-increased transport conveyer, and the terminal discharge gate of newly-increased transport conveyer is connected with the pan feeding mouth of feeding conveyer. The utility model discloses an increase cross sieve in the transportation process behind the coal blending, before going into the rubbing crusher, not only reduced the component that goes into fineness among the stove coal < 0.5mm and accounted for the ratio to improve the coke quality, still improved the coal blending dish and gone up the coal volume, thereby reduced the coal blending dish time of starting, and then reduced the running cost.

Description

Blending coal conveying device

Technical Field

The utility model relates to a coke production technical field, concretely relates to cooperation coal conveyor.

Background

The coal as fired in the coal coking process is generally required to be mixed coal with the granularity of less than 3mm, and the components of the mixed coal comprise coking coal, lean coal, fat coal, gas coal and the like.

In the prior art, a coking coal preparation system for preparing coal as fired generally mixes a plurality of kinds of coal to form mixed coal and then sends the mixed coal into a crusher for crushing. Through research, the component proportion of the fineness of less than 0.5mm in the coal as fired is reduced, and the coke quality is positively acted. Therefore, the proportion of the components with the fineness of less than 0.5mm in the coal as fired can be effectively reduced, so that the quality of the coke is improved, and the problem to be solved by the technical staff at the present stage is urgently needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a blending coal conveying device, which can effectively reduce the proportion of components with fineness less than 0.5mm in coal as fired, thereby improving the coke quality.

In order to solve the technical problem, the utility model adopts the following technical proposal.

The blended coal conveying device comprises a blended coal tray, a discharging conveyor, an original transferring conveyor, a crusher, a feeding conveyor and a coal tower which are sequentially arranged according to the conveying direction of the blended coal, wherein a cross screen for screening the blended coal conveyed from the blended coal tray is arranged between the discharging conveyor and the original transferring conveyor, and the aperture of a screen hole of the cross screen is 3mm; the oversize material discharge gate of cross sieve is connected with the front end pan feeding mouth of original transport conveyer, and the undersize material discharge gate of cross sieve is connected with newly-increased transport conveyer, and the terminal discharge gate of newly-increased transport conveyer is connected with the pan feeding mouth of feeding conveyer.

Preferably, the coal blending tray is a plurality of coal blending trays respectively storing one kind of coal blending.

Preferably, the discharging conveyor is in one-to-one correspondence with the coal blending plate.

Preferably, the cross sieve is arranged in one-to-one correspondence with the discharging conveyor.

Preferably, the original transfer conveyor comprises a plurality of transfer conveyors connected in series in sequence, and a front end feeding port of the original transfer conveyor is connected with an oversize material discharge port of each cross screen.

Preferably, newly-increased transport conveyer is including a plurality of transport conveyer of establishing ties in proper order, and the front end pan feeding mouth of newly-increased transport conveyer is connected with the undersize discharge gate of each cross screen.

Due to the adoption of the technical scheme, the utility model has the following technical progress.

The utility model discloses a behind the coal blending, go into the transportation before the rubbing crusher in-process increase cross over screen, make the coal blending pass through cross over screen earlier, the fineness is less than or equal to 3 mm's coal kind no longer gets into the rubbing crusher and smashes in the coal blending under the screen, the fineness > 3 mm's coal kind carries out the selectivity and smashes in the coal blending on the screen, thereby it is less than or equal to 3mm coal kind and gets into the rubbing crusher and smashes to reduce the fineness in the coal blending, and then the component that the fineness is less than 0.5mm accounts for the ratio in reducing the coal as fired, 3-0.5mm grain size distribution more tends to concentrate in making the coal as fired, coal as fired size distribution is more reasonable, not only improved the coke quality, the coal blending dish is gone up the coal volume has still been improved, thereby reduce the coal blending dish time of opening, and then the running cost is reduced.

Drawings

FIG. 1 is a block diagram of the present invention;

fig. 2 is a block diagram of an embodiment of the present invention.

Wherein: 1. the coal preparation method comprises the following steps of coal preparation disc, 2 discharging conveyor, 3 cross sieve, 4 original transfer conveyor, 5 newly added transfer conveyor, 6 crusher, 7 feeding conveyor and 8 coal tower.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

A blending coal conveying device is shown in a combined drawing 1-2 and comprises a blending coal tray 1, a discharging conveyor 2, an original transferring conveyor 4, a crusher 6, a feeding conveyor 7 and a coal tower 8 which are sequentially arranged in the conveying direction of the blending coal.

The coal blending tray 1 is a plurality of, has stored a blending coal respectively, and this embodiment uses two coal blending trays 1 as an example.

The number of the discharging conveyors 2 is consistent with that of the coal blending disks 1, the discharging conveyors are arranged in one-to-one correspondence with the coal blending disks 1, and the discharging conveyors 2 are used for conveying the blended coal in the coal blending disks 1 outwards.

And cross sieves 3 are arranged between the discharging conveyor 2 and the original transferring conveyor 4, the number of the cross sieves 3 is consistent with that of the discharging conveyor 2, and the cross sieves are respectively arranged in one-to-one correspondence with the discharging conveyors 2. The cross screen 3 is used for screening the blended coal conveyed out of the coal blending tray 1, the blended coal screened by the cross screen 3 is divided into oversize products and undersize products, and the aperture of a screen hole of the cross screen 3 is 3mm, so that the fineness of the oversize products is larger than 3mm, and the fineness of the undersize products is smaller than or equal to 3mm.

Original transfer conveyer 4 includes a plurality of transfer conveyer, and a plurality of transfer conveyer establishes ties in proper order, forms the transfer route. The front end feed inlet of the original transfer conveyor 4 is connected with the oversize material discharge outlets of the cross sieves 3, and the tail end discharge outlet of the original transfer conveyor 4 is connected with the pulverizer 6, so that oversize materials on the cross sieves 3 are mixed to form mixed coal with fineness larger than 3mm and the mixed coal is transferred to the pulverizer 6. The pulverizer 6 pulverizes the mixed coal having a fineness of more than 3mm.

The undersize discharge gate of cross screen 3 is connected with newly-increased conveyer 5 of transporting, and newly-increased conveyer 5 of transporting includes that a plurality of transports the conveyer, and a plurality of transports the conveyer and establishes ties in proper order equally, forms the transfer route. The front end feeding port of the newly added transfer conveyor 5 is connected with the undersize discharge ports of the cross sieves 3, so that undersize on the cross sieves 3 are mixed to form mixed coal with the fineness of less than or equal to 3mm, and the mixed coal is transferred.

The feed inlet of the feed conveyor 7 is connected with the tail end discharge port of the newly-added transfer conveyor 5 and the discharge port of the crusher 6, so that the mixed coal with the fineness less than or equal to 3mm and the crushed mixed coal are mixed to form coal as fired and conveyed. The discharge port of the feeding conveyor 7 is connected with the feeding port of the coal tower 8, so that the coal as fired is conveyed to the coal tower 8 to produce coke.

The utility model discloses when using, through behind the blending coal, go into rubbing crusher 6 before in the transportation increase cross over screen 3, make the blending coal pass through cross over screen 3 earlier, the fineness is less than or equal to 3 mm's coal kind no longer gets into rubbing crusher 6 and smashes in the blending coal under the screen, the fineness > 3 mm's coal kind carries out the selectivity crushing in the blending coal on the screen, thereby it gets into rubbing crusher 6 and smashes to reduce the fineness is less than or equal to 3mm coal kind in the blending coal, and then reduce the component proportion of fineness < 0.5mm in the coal of going into the stove, 3-0.5mm grain size distribution more tends to concentrate in the coal of going into the stove, it is more reasonable to go into the coal size distribution of stove, not only can improve the coke quality, make behind the coke reaction CSR% improve 2.1%, M25 cold strength improves 2.5%, coke average particle size promotes 1.5mm, and can also improve the coal loading capacity of blending coal dish 1 (by 650 tons/hour improve to 800 tons/hour), the coal dish is opened the machine time by 16 hours, reduce the running cost about 198.08 yuan/year.

Claims

1. Coal blending conveyor, including according to coal blending dish (1), discharge conveyor (2), original conveyer (4), rubbing crusher (6), feeding conveyor (7) and coal tower (8) that the direction of delivery set gradually of coal blending, its characterized in that: a cross screen (3) for screening the blended coal conveyed out of the coal blending tray (1) is arranged between the discharging conveyor (2) and the original transferring conveyor (4), and the aperture of a screen hole of the cross screen (3) is 3mm; the oversize material discharge gate of cross over sieve (3) is connected with the original front end pan feeding mouth of transporting conveyer (4), and the undersize material discharge gate of cross over sieve (3) is connected with newly-increased conveyer (5) of transporting, and the terminal discharge gate of newly-increased conveyer (5) of transporting is connected with the pan feeding mouth of feeding conveyor (7).

2. The blended coal conveying apparatus according to claim 1, wherein: the coal blending plate (1) is provided with a plurality of coal blending plates respectively storing coal.

3. The blended coal conveying apparatus according to claim 2, wherein: the discharging conveyors (2) are arranged in one-to-one correspondence with the coal blending disks (1).

4. The blended coal conveying apparatus according to claim 3, wherein: the cross screen (3) is arranged in one-to-one correspondence with the discharging conveyor (2).

5. The blended coal conveying apparatus according to claim 4, wherein: original transport conveyer (4) are including a plurality of transport conveyer of establishing ties in proper order, and the front end pan feeding mouth of original transport conveyer (4) is connected with the oversize material discharge gate of each cross sieve (3).

6. The blended coal conveying apparatus according to claim 4, wherein: newly-increased transport conveyer (5) are including a plurality of transport conveyer of establishing ties in proper order, and the front end pan feeding mouth of newly-increased transport conveyer (5) is connected with the undersize discharge gate of each cross sieve (3).