CN213762291U

CN213762291U - High-efficient raw coal wetting device

Info

Publication number: CN213762291U
Application number: CN202022416909.9U
Authority: CN
Inventors: 韦斌
Original assignee: Qipanjing Branch Of Etokeqi Xinya Coal Coke Co ltd
Current assignee: Qipanjing Branch Of Etokeqi Xinya Coal Coke Co ltd
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-07-23
Anticipated expiration: 2030-10-27

Abstract

The utility model discloses a high-efficient raw coal damping device, including falling the conveyor belt that case and top side set up, should fall roof portion opposite side and be provided with and extend to the moist pipe that falls the incasement, moist tub of exit end is connected with conical nozzle, it falls first fall board, second fall board, third fall board, fourth fall board that the incasement wall both ends were fixed with subtend conveyor belt export and the setting of straggling from top to bottom to fall, the utility model discloses an improve the wet inclination who falls the fall board that falls the case of raw coal to adopt conical nozzle, can effectually prevent that the raw coal from producing the cohesion phenomenon at moist in-process, through the round trip of several wide-angle fall boards, the coal of cohesion thoroughly loose reaching branch requirement clean coal gangue greatly reduced, guarantee the quality and the productivity of follow-up clean coal product.

Description

High-efficient raw coal wetting device

Technical Field

The utility model relates to a coal washing field, concretely relates to raw coal wetting device.

Background

In the coal washing process of the coal preparation plant, the main purpose of wetting the washed raw coal is to ensure that the raw coal is sufficiently loose and prevent the raw coal from caking. Because the washed raw coal is supplied to the inner spiral of the cyclone for separation, and the separation time of the raw coal in the cyclone is short, if the washed raw coal is not well wetted, the raw coal is agglomerated, and the agglomerated raw coal cannot be dispersed in a short time during separation and enters clean coal along with low-density materials at the inner spiral of the cyclone, so that the clean coal product carries gangue, and the quality and the yield of the clean coal product are seriously influenced.

Through research and test, the reasons for the high gangue content of clean coal are as follows. 1. The linear nozzle adopted for the raw coal moistening pipe can not generate enough strong pressure, and the raw coal from the coal conveying belt can not be washed loose; 2. a 40 degree drop plate angle of the wetting apparatus within the drop box is not easy enough to make a repose angle (the more easily an object on a slope will slide down, the angle of this critical state is called the repose angle when the object reaches a state where it starts to slide down); 3. the falling plate has uneven height of the channel and can not cause secondary loosening to the raw coal.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems existing in the prior art, the utility model provides a high-efficient raw coal moistening device.

The utility model discloses a realize through following technical scheme:

the utility model provides a high-efficient raw coal wetting device, is including falling the conveying belt that case and top side set up, should fall that case top opposite side is provided with and extend to the wet pipe that falls the incasement, wet pipe exit end is connected with the taper nozzle, it is fixed with first fall board, second fall board, third fall board, fourth fall board that subtend conveying belt export and the setting of straggling by last to falling incasement wall both ends, first fall board inclination is 58-62, second fall board, third fall board, fourth fall board inclination is 53-57.

Preferably, the first fall plate is inclined at an angle of 60 °.

Preferably, the inclination angles of the second falling plate, the third falling plate and the fourth falling plate are 55 °.

Preferably, the channel spacing formed between every two adjacent first falling plates, every two adjacent second falling plates, every two adjacent third falling plates and every two adjacent fourth falling plates are set to be 28-32 cm.

Preferably, the conical nozzle is positioned obliquely above the first falling plate and the edge of the conical nozzle is arranged in parallel with the first falling plate.

Compared with the prior art, the beneficial effects of the utility model are that: this practicality is through improving the wet inclination that falls the fall board of case of raw coal to adopt conical jet, can effectually prevent that the raw coal from producing at moist in-process and holding the group phenomenon, through the round trip of several wide-angle fall boards and beat, hold the thorough loose branch of coal of group and require clean coal to contain the cash rate greatly reduced, guarantee the quality and the productivity of follow-up clean coal product.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

in the figure: the device comprises a dropping box 1, a discharge hole 2, a conveying belt 3, a first dropping plate 4, a second dropping plate 5, a third dropping plate 6, a fourth dropping plate 7, a wetting pipe 8 and a conical nozzle 9.

Detailed Description

The invention will be described in further detail with reference to the following detailed description and accompanying drawings:

as shown in fig. 1, the efficient raw coal wetting device comprises a falling box 1 and a conveying belt 3 arranged at the side end of the top of the falling box 1, wherein a wetting pipe 8 extending into the falling box 1 is arranged at the other side of the top of the falling box 1, a conical nozzle 9 is connected to the outlet end of the wetting pipe 8, a first falling plate 4, a second falling plate 5, a third falling plate 6 and a fourth falling plate 7 which face the outlet of the conveying belt 3 and are arranged in a staggered manner are fixed at the two ends of the inner wall of the falling box 1 from top to bottom, the inclination angle of the first falling plate 4 is 58-62 degrees, and the inclination angles of the second falling plate 5, the third falling plate 6 and the fourth falling plate 7 are 53-57 degrees.

The first fall plate 4 is inclined at an angle of 60 °.

The inclination angles of the second falling plate 5, the third falling plate 6 and the fourth falling plate 7 are 55 degrees.

The channel spacing formed between every two adjacent first falling plates 4, second falling plates 5, third falling plates 6 and fourth falling plates 7 is set to be 28-32 cm.

The conical nozzle 9 is located obliquely above the first fall plate 4 and has its edge arranged parallel to the first fall plate 4.

The working principle is as follows: the conveying belt 3 conveys raw coal into the wetting falling box 1, firstly falls on the first falling plate 4, is scattered and wetted by high-pressure water sprayed by a conical nozzle 9 at the front end of a wetting pipe 8, passes through the second falling plate 5, the third falling plate 6 and the fourth falling plate 7 in sequence for secondary loosening and wetting, and is finally discharged from a discharge port 2 of the falling box 1;

the original linear nozzle is set to be the conical nozzle 9 which can provide strong pressure and generate enough strong impact force to loose and sort the coal which is agglomerated, the conical nozzle 9 is arranged above the first falling plate 4 in an inclined way and is arranged in parallel, the coal can be impacted, diffused and moistened from the root of the first falling plate 4 with the maximum effect, the moistening effect is ensured, the angle of the first falling plate 4 is improved to be 60 degrees, the angle of the second falling plate 5, the third falling plate 6 and the fourth falling plate 7 is improved to be 55 degrees from the original 40 degrees, so that the formation of a repose angle is prevented, the agglomerated coal which is moistened can not be gathered on the falling plates, the flowability of the coal on the falling plates is ensured, the channels between the two adjacent falling plates are all set to be 30cm, the uniformity of the falling speed can be ensured, the secondary loose of the coal is ensured, and the coal which is agglomerated through the back and forth falling of a plurality of falling plates is fallen, the agglomerated coal is thoroughly loosened to meet the classification requirement. The gangue content of the clean coal is greatly reduced, and the quality and the yield of subsequent clean coal products are ensured.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a high-efficient raw coal wetting device, is including falling conveying belt (3) that case (1) and top side set up, its characterized in that: this fall case (1) top opposite side is provided with and extends to the wet pipe (8) that fall in case (1), wet pipe (8) exit end is connected with conical nozzle (9), it is fixed with first fall board (4), second fall board (5), third fall board (6), fourth fall board (7) that opposite direction conveyor belt (3) export and the setting of straggling by last to fall case (1) inner wall both ends, first fall board (4) inclination is 58-62, the inclination of second fall board (5), third fall board (6), fourth fall board (7) is 53-57.

2. A high efficiency raw coal moistening device as claimed in claim 1, wherein: the inclination angle of the first falling plate (4) is 60 degrees.

3. A high efficiency raw coal moistening device as claimed in claim 1, wherein: the inclination angles of the second falling plate (5), the third falling plate (6) and the fourth falling plate (7) are 55 degrees.

4. A high efficiency raw coal moistening device as claimed in claim 1, wherein: the channel spacing formed between every two adjacent first falling plates (4), second falling plates (5), third falling plates (6) and fourth falling plates (7) is set to be 28-32 cm.

5. A high efficiency raw coal moistening device as claimed in claim 1, wherein: the conical nozzle (9) is positioned above the first falling plate (4) in an inclined mode, and the edge of the conical nozzle is arranged in parallel with the first falling plate (4).