CN219597232U

CN219597232U - Anti-blocking type coal washing and screening screen equipment

Info

Publication number: CN219597232U
Application number: CN202320732798.3U
Authority: CN
Inventors: 上官永岗
Original assignee: Shanxi Tuyue Coal Preparation Engineering Technology Co ltd
Current assignee: Shanxi Tuyue Coal Preparation Engineering Technology Co ltd
Priority date: 2023-04-06
Filing date: 2023-04-06
Publication date: 2023-08-29
Anticipated expiration: 2033-04-06

Abstract

The utility model relates to the technical field of coal washing and dressing, and discloses anti-blocking coal washing and dressing screen equipment, which comprises the following components: the screening machine comprises a machine body, wherein a screening area is arranged in the machine body, a screening cylinder is rotatably arranged in the screening area, a gear ring is arranged on the surface of the screening cylinder, a driving motor is arranged in the machine body, and a driving gear meshed with the gear ring is arranged at the output end of the driving motor; the screening section of thick bamboo comprises intranet and outer net, the intranet is interior protruding curved surface, and this prevent stifled coal screen cloth equipment of washing, through the design of screening section of thick bamboo in the screening district and the combined design of intranet and outer net in the screening section of thick bamboo, can reduce the impetus on former coal piece and mesh surface, avoid former coal piece card in the mesh of screening section of thick bamboo surface to guarantee the normal screening processing of former coal piece, the design that increases gradually of interval between intranet and the outer net surface mesh and the adjacent intranet in the screening section of thick bamboo can realize the continuous classification screening processing to former coal piece, is favorable to improving the efficiency of former coal piece screening.

Description

Anti-blocking type coal washing and screening screen equipment

Technical Field

The utility model relates to the technical field of coal washing and dressing, in particular to anti-blocking coal washing and dressing screen equipment.

Background

After the raw coal is mined, the raw coal is required to be cleaned and screened, and after impurities in the raw coal are removed, the raw coal is required to be classified according to the granularity of the raw coal.

Raw coal blocks are conveyed by utilizing a conveying belt after being mined, raw coal is cleaned in the conveying process, then the raw coal blocks are screened by utilizing screening equipment, the screening structure in the existing screening equipment is a vibrating screen, the vibrating screen is in a plane shape, the raw coal blocks are screened in a vibrating mode, when the screening structure is used, the raw coal blocks are easily clamped in meshes on the surface of the vibrating screen, the surface of the vibrating screen is blocked, the screening processing of the raw coal blocks by the vibrating screen is affected, meanwhile, the running of the raw coal blocks is not easily limited by the plane vibrating screen, and the raw coal blocks are easy to splash.

Disclosure of Invention

In order to solve the problems that the screening structure in the traditional screening equipment is a vibrating screen, the vibrating screen is in a plane shape, raw coal blocks are screened in a vibrating mode, when the screening structure is used, the raw coal blocks are easy to clamp in meshes on the surface of the vibrating screen, the surface of the vibrating screen is blocked, the screening processing of the raw coal blocks by the vibrating screen is affected, and meanwhile, the running of the raw coal blocks is not easy to limit by the plane vibrating screen, so that the raw coal blocks are easy to splash, the utility model is realized by the following technical scheme: an anti-blocking coal washing and screening screen device, comprising:

the screening machine comprises a machine body, wherein a screening area is arranged in the machine body, a screening cylinder is rotatably arranged in the screening area, a gear ring is arranged on the surface of the screening cylinder, a driving motor is arranged in the machine body, and a driving gear meshed with the gear ring is arranged at the output end of the driving motor;

the screening cylinder consists of an inner net and an outer net, wherein the inner net is an inward convex curved surface, the outer net is an outward convex curved surface, and the inner net and the outer net are alternately distributed;

mesh openings are formed in the surfaces of the inner net and the outer net, curved surface mesh openings can be formed in the surfaces of the inner net and the outer net through curved surface design, the force points of raw coal blocks can be reduced through the curved surface mesh openings, and the distance between two adjacent inner nets is gradually reduced or increased along the axial direction of the screening cylinder.

Further, the screening cylinder is provided with a plurality of screening stages in sequence along the axial direction of the screening cylinder, meshes of an inner net and an outer net corresponding to the screening stages are reduced or increased in sequence, and each screening stage is provided with a screening port for collecting raw coal blocks with different granularities.

Further, the method further comprises the following steps:

the feeding cylinder is fixedly arranged in the machine body, and a feeding port is formed in the surface of the feeding cylinder;

the cleaning area is positioned at one side of the feeding direction of the feeding cylinder, a plurality of spray heads are arranged in the cleaning area and fixedly connected with the feeding cylinder, and the screening area is positioned at one side of the cleaning area away from the feeding cylinder.

Further, the inside rotation of screening section of thick bamboo is installed the feed screw rod, the feed screw rod extends to the inside of feeding section of thick bamboo, organism internally mounted have be used for driving feed screw rod pivoted driving motor.

Further, the feeding screw is located between two adjacent spiral blades inside the cleaning area and is provided with a stirring rod for stirring and turning raw coal blocks entering the cleaning area, so that the surface of the raw coal blocks can be cleaned comprehensively.

Further, the distance between two adjacent spiral blades on the surface of the feeding screw inside the screening cylinder is gradually reduced along the feeding direction of the feeding screw, and when raw coal blocks are screened in the screening cylinder, the pushing speed of the raw coal blocks is gradually increased along with continuous screening processing of the raw coal blocks.

Further, a residue opening is formed in the screening cylinder at one end of the feeding screw in the feeding direction and used for collecting raw coal blocks with unsatisfactory granularity.

Compared with the prior art, the utility model has the following beneficial effects:

1. this prevent stifled coal screen cloth equipment of washing, through the design of screening section of thick bamboo in the screening district and the combined design of interior net and outer net in the screening section of thick bamboo, can reduce the raw coal piece and mesh surface's impetus, avoid raw coal piece card in the mesh on screening section of thick bamboo surface to guarantee the normal screening processing of raw coal piece, the design that increases gradually or gradually of the interval between interior net and the outer net surface mesh in the screening section of thick bamboo and the adjacent interior net can realize the continuous classification screening processing to raw coal piece, is favorable to improving the efficiency of raw coal piece screening.

2. This prevent stifled coal screen cloth equipment of washing, through the combined design of feed cylinder, washing district and screening district, can realize the continuous washing of raw coal, screening processing, need not to shift the raw coal in washing and screening in-process, be favorable to improving the efficiency of raw coal washing processing.

Drawings

FIG. 1 is a front view of the internal structure of the coal washing and dressing equipment of the utility model;

FIG. 2 is a front view showing the internal structure of the cleaning zone according to the present utility model;

FIG. 3 is a front view of the internal structure of the screening zone of the present utility model;

FIG. 4 is a side view of the screen drum construction of the present utility model;

fig. 5 is a side view of the screen section structure of the present utility model.

In the figure: 1. a body; 2. a feed cylinder; 21. a feed inlet; 3. a feed screw; 31. a stirring rod; 4. a cleaning zone; 5. a spray head; 6. screening areas; 7. a sieving cylinder; 71. an intranet; 72. an outer net; 8. a screening port; 9. and a residual material port.

Description of the embodiments

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The embodiment of the anti-blocking type coal washing and screening screen device is as follows:

referring to fig. 1-5, an anti-blocking coal washing and screening screen apparatus, comprising:

the screening machine comprises a machine body 1, wherein a screening area 6 is arranged in the machine body 1, a screening cylinder 7 is rotatably arranged in the screening area 6, a gear ring is arranged on the surface of the screening cylinder 7, a driving motor is arranged in the machine body 1, and a driving gear meshed with the gear ring is arranged at the output end of the driving motor.

The feeding barrel 2 is fixedly arranged in the machine body 1, and a feeding hole 21 is formed in the surface of the feeding barrel 2.

The cleaning area 4 is located one side of the feeding direction of the feeding cylinder 2, a plurality of spray heads 5 are arranged in the cleaning area 4, the spray heads 5 are fixedly connected with the feeding cylinder 2, and the screening area 6 is located one side, away from the feeding cylinder 2, of the cleaning area 4.

The screening cylinder 7 is composed of an inner net 71 and an outer net 72, wherein the inner net 71 is an inner convex curved surface, the outer net 72 is an outer convex curved surface, and the inner net 71 and the outer net 72 are alternately distributed.

Mesh openings are formed in the surfaces of the inner net 71 and the outer net 72, the surfaces of the inner net 71 and the outer net 72 can form curved mesh openings through the curved surface design, the curved mesh openings can reduce the acting points of raw coal blocks, and the distance between two adjacent inner nets 71 is gradually reduced or increased along the axial direction of the screening cylinder 7.

The screening cylinder 7 is provided with a plurality of screening stages in turn along the axial direction thereof, meshes of the inner net 71 and the outer net 72 corresponding to the screening stages are reduced or increased in turn, and each screening stage is provided with a screening port 8 for collecting raw coal blocks with different granularities.

The inside rotation of screening section of thick bamboo 7 is installed feed screw 3, and feed screw 3 extends to the inside of feed section of thick bamboo 2, and organism 1 internally mounted has the driving motor who is used for driving feed screw 3 pivoted, and feed screw 3 is located and is equipped with stirring rod 31 between two adjacent spiral leaves of wasing the district 4 inside for stir the raw coal piece that gets into in wasing the district 4 and turn, be convenient for carry out comprehensive washing to the surface of raw coal piece.

The interval between two adjacent spiral blades on the surface of the feeding screw 3 inside the screening barrel 7 gradually decreases along the feeding direction of the feeding screw 3, and when raw coal blocks are screened in the screening barrel 7, the pushing speed of the raw coal blocks is gradually increased along with continuous screening processing of the raw coal blocks.

The screening cylinder 7 is internally provided with a residual material opening 9 at the position of one end of the feeding screw 3 in the feeding direction, and is used for collecting raw coal blocks with unsatisfactory granularity.

The working principle of the coal washing and dressing screen device is as follows:

before washing raw coal, the screening cylinder 7 and the feeding screw 3 are driven to rotate through relevant driving equipment, raw coal is put into the feeding cylinder 2 from the position of the feeding hole 21, the raw coal is conveyed to the cleaning area 4 through the rotation of the feeding screw 3, when the raw coal enters the cleaning area 4, water flows are sprayed out of the spray heads 5 in the cleaning area 4 to clean the raw coal, meanwhile, when the feeding screw 3 in the cleaning area 4 rotates, stirring rods 31 between helical blades on the surface of the feeding screw 3 stir the raw coal, and stirring rods 31 are utilized to stir the raw coal, so that the surface of a raw coal block is comprehensively cleaned.

When the raw coal is cleaned by the spray head 5 in the cleaning area 4, the raw coal is continuously pushed to move towards the screening area 6 by the feed screw 3, and when the raw coal enters the screening cylinder 7, the raw coal blocks are driven to shake inside the screening cylinder 7 by rotation of the screening cylinder 7, and raw coal blocks smaller than meshes on the surfaces of the inner net 71 and the outer net 72 fall into corresponding screening openings 8 through the meshes on the surfaces of the inner net 71 and the outer net 72.

Along with the continuous pushing of raw coal blocks by the feed screw 3, meshes on the surfaces of an inner net 71 and an outer net 72 in the screening cylinder 7 are continuously increased, and meanwhile, the distance between two adjacent inner nets 71 is also continuously increased, so that along with the movement of raw coal blocks, the granularity of the raw coal blocks screened by the screening cylinder 7 is also continuously increased, the raw coal blocks which do not meet the screening requirements are classified and screened, and are discharged from the residual material port 9 under the pushing action of the feed screw 3.

Because the surfaces of the inner net 71 and the outer net 72 are curved surfaces, the mesh openings on the surfaces of the inner net 71 and the outer net 72 are curved surface holes, the force points of the curved surface holes on the raw coal blocks are reduced, and meanwhile, the raw coal blocks are easy to separate from the mesh openings on the surfaces of the inner net 71 and the outer net 72 under the action of gravity along with the rotation of the screening cylinder 7, so that the raw coal blocks can be prevented from being clamped in the mesh openings.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An anti-blocking coal washing and screening screen device, comprising:

the screening machine comprises a machine body (1), wherein a screening area (6) is arranged in the machine body (1), and a screening cylinder (7) is rotatably arranged in the screening area (6);

the screening cylinder (7) consists of an inner net (71) and an outer net (72), wherein the inner net (71) is an inward convex curved surface, the outer net (72) is an outward convex curved surface, and the inner net (71) and the outer net (72) are alternately distributed;

mesh openings are formed in the surfaces of the inner net (71) and the outer net (72), and the distance between two adjacent inner nets (71) is gradually reduced or increased along the axial direction of the screening cylinder (7).

2. An anti-blocking coal washing screen apparatus according to claim 1, wherein: the screening cylinder (7) is sequentially provided with a plurality of screening stages along the axial direction of the screening cylinder, meshes of an inner net (71) and an outer net (72) corresponding to the screening stages are sequentially reduced or increased, and each screening stage is provided with a screening port (8).

3. An anti-blocking coal washing screen apparatus according to claim 1 or 2, characterized in that: further comprises:

the feeding cylinder (2) is fixedly arranged in the machine body (1), and a feeding port (21) is arranged on the surface of the feeding cylinder (2);

the cleaning area (4) is located on one side of the feeding direction of the feeding barrel (2), a plurality of spray heads (5) are arranged in the cleaning area (4), the spray heads (5) are fixedly connected with the feeding barrel (2), and the screening area (6) is located on one side, away from the feeding barrel (2), of the cleaning area (4).

4. An anti-blocking coal washing screen apparatus according to claim 3, wherein: the inside rotation of screening section of thick bamboo (7) is installed feed screw rod (3), feed screw rod (3) extend to the inside of feed section of thick bamboo (2).

5. An anti-blocking coal washing screen apparatus according to claim 4, wherein: and a stirring rod (31) is arranged between two adjacent spiral blades in the cleaning area (4) of the feeding screw (3).

6. An anti-blocking coal washing screen apparatus according to claim 4, wherein: the distance between two adjacent spiral blades on the surface of the feeding screw (3) inside the screening cylinder (7) is gradually reduced along the feeding direction of the feeding screw (3).

7. An anti-blocking coal washing screen apparatus according to claim 4, wherein: the screening cylinder (7) is internally provided with a residual material opening (9) at the position which is positioned at one end of the feeding screw rod (3) in the feeding direction.