CN218872825U

CN218872825U - Coal mine screening equipment

Info

Publication number: CN218872825U
Application number: CN202223387062.1U
Authority: CN
Inventors: 何耀宇; 任崇元; 武婉萱
Original assignee: Taiyuan University of Technology
Current assignee: Taiyuan University of Technology
Priority date: 2022-12-15
Filing date: 2022-12-15
Publication date: 2023-04-18
Anticipated expiration: 2032-12-15

Abstract

The utility model discloses a coal mine screening device, which comprises parallel side plates, wherein the bottoms of the side plates are fixedly connected through a conveyer belt structure; when the upper screen mesh is blocked, the scraper is installed on the lower screen mesh and the bottom wall of the cross rod at the moment, the lower screen mesh and the cross rod after the scraper is installed can contact the bottom surface and the top surface of the upper screen mesh, the rotating shaft is rotated through the motor, the driving gear drives the chain, the linkage gear is rotated, the lower screen mesh is moved, meanwhile, the rotating shaft drives the bevel gear II, the bevel gear III is rotated, the screw shaft is rotated, the cross rod is moved, the lower screen mesh and the cross rod drive the scraper and the brush to move along the orientation of the upper groove and the lower groove, the coal blocked in the upper screen mesh can be shoveled or crushed, and the coal ash remained on the upper screen mesh is cleaned.

Description

Coal mine screening equipment

Technical Field

The utility model relates to a screening installation technical field specifically is a colliery screening installation.

Background

The coal mine that needs to be mined out among the coal mining is screened, current coal mine screening mode is mainly for manual screening, this kind of mode not only consumes the manpower, and because the coal mine bonds together easily, cause the screen cloth to appear the phenomenon of jam easily, some coal mines are still because the shape is not normal, can block on the screen cloth, and be difficult for getting rid of, thereby influence the progress of screening, the coal mine still can produce a large amount of coal dusts in the screening process simultaneously and pile up on the screen cloth, be difficult for getting rid of equally, for this we propose a coal mine screening installation and be used for solving above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a colliery screening installation to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the coal mine screening equipment comprises parallel side plates, wherein the bottoms of the side plates are fixedly connected through a conveying belt structure; the inner side wall of each side plate is provided with an upper groove, a middle groove and a lower groove which are parallel to each other in a penetrating manner, a screw shaft is arranged in each upper groove, an upper screen is arranged in each middle groove, a parallel motor is fixedly arranged in the inner wall of each lower groove, one end of each motor is fixedly connected with a rotating shaft, driving gears are fixedly sleeved on the rotating shafts, the driving gears on the two rotating shafts are movably connected through chains, two groups of linkage gears are rotatably arranged in the chains and fixedly connected to a fixed shaft, and the fixed shaft is fixedly connected to two end walls of the lower screen;

the top wall of the lower screen mesh is clamped with the parallel conical scrapers, and the top wall of each scraper is connected with the bottom wall of the upper screen mesh in a friction mode.

Preferably, a second bevel gear is fixedly sleeved on the rotating shaft, tooth grooves in the outer ring wall of the bevel gear are meshed with tooth grooves in one side wall of the third bevel gear, the third bevel gear is fixedly connected to two ends of the connecting shaft, the connecting shaft rotatably penetrates through the side wall of the side plate to the upper groove, and a sleeve is arranged at the connecting position of the connecting shaft and the side plate.

Preferably, tooth spaces on three side walls of the bevel gear arranged at one end of the connecting shaft in the upper groove are meshed with tooth spaces on an outer ring wall of the bevel gear fixedly sleeved on the screw shaft, and outer rings at two ends of the screw shaft are fixedly connected in inner rings of bearings fixedly arranged in inner walls at two ends of the upper groove.

Preferably, the screw shaft is provided with a sliding penetrating cross rod, a threaded ring is arranged at the joint of the cross rod and the screw shaft, the other end of the cross rod is fixedly connected with a sliding block, the sliding block is slidably mounted in an upper groove on the side wall of the side plate on the other side, the bottom wall of the cross rod is also clamped with a scraper, the scraper is connected with the top wall of the upper screen in a friction mode, the bottom wall of the cross rod is also fixedly connected with a brush, and the brush is also connected with the top wall of the upper screen in a friction mode.

Preferably, the four corners of the bottom wall of the upper screen are fixedly connected with one end of a spring, the other end of the spring is fixedly connected with the inner wall of the middle groove, the top wall of the upper screen is fixedly provided with a hoisting frame, and the bottom wall of the hoisting frame is fixedly hoisted with a vibration motor.

Preferably, the size of the lower screen is one third of that of the upper screen, and the diameter of the leakage holes in the lower screen is larger than that of the leakage holes in the upper screen.

Compared with the prior art, the beneficial effects of the utility model are that:

the vibration motor arranged on the upper screen through the hoisting frame vibrates during working, so that the upper screen vibrates, and meanwhile, the reciprocating vibration is carried out under the action of the spring, so that coal can be primarily screened, part of the coal enters the lower screen through the upper screen, the coal can be further screened through the lower screen, and the multi-stage screening effect of the device is improved;

when producing the jam on last screen cloth, at this moment install the scraper blade on the diapire of screen cloth and horizontal pole down, at this moment because the bottom surface and the top surface of screen cloth can be propped up in the height of lower screen cloth and horizontal pole behind the installation scraper blade, through the rotation of motor, move screen cloth and horizontal pole down along the orientation in upper groove and lower groove, and then can carry out the coal of jam in the last screen cloth to shovel or the breakage, and then avoid the long-time decline that causes the screening progress that blocks up of screen cloth of coal granule, when removing stifled in-process brush can clean remaining coal ash on the screen cloth, and then clean the screen cloth.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the mounting groove of the present invention;

FIG. 3 is a side cross-sectional view of the present invention;

fig. 4 is the structure schematic diagram of the middle screen of the utility model.

In the figure: 1. a side plate; 2. a conveyor belt structure; 4. an upper groove; 40. a screw shaft; 41. a bearing; 42. a threaded ring; 43. a first bevel gear; 44. a cross bar; 45. a brush; 46. a slider; 5. a middle groove; 51. feeding a screen mesh; 52. a hoisting frame; 53. a vibration motor; 54. a spring; 6. a lower groove; 61. a motor; 62. a rotating shaft; 63. a second bevel gear; 64. a driving gear; 65. a chain; 66. a lower screen mesh; 67. a squeegee; 68. a fixed shaft; 69. a linkage gear; 7. a connecting shaft; 71. a third bevel gear; 72. a sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1:

referring to fig. 1-4, the present invention provides a technical solution: a coal mine screening device comprises parallel side plates 1, wherein the bottoms of the side plates 1 are fixedly connected through a conveying belt structure 2; the inner side wall of the side plate 1 is provided with three upper grooves 4, a middle groove 5 and a lower groove 6 which are parallel to each other in a penetrating manner, a screw shaft 40 is arranged in each upper groove 4, an upper screen 51 is arranged in each middle groove 5, a parallel motor 61 is fixedly arranged in the inner wall of each lower groove 6, one end of each motor 61 is fixedly connected with a rotating shaft 62, driving gears 64 are fixedly sleeved on the rotating shafts 62, the driving gears 64 on the two rotating shafts 62 are movably connected through a chain 65, two groups of linkage gears 69 are rotatably arranged in the chain 65, the linkage gears 69 are fixedly connected onto a fixed shaft 68, and the fixed shaft 68 is fixedly connected onto two end walls of the lower screen 66; the top wall of the lower screen 66 captures the parallel tapered scrapers 67 and the top wall of the scrapers 67 frictionally engages the bottom wall of the upper screen 51.

An upper groove 4, a middle groove 5 and a lower groove 6 are respectively arranged between the inner side walls of the parallel side plates 1, the upper groove 4, the middle groove 5 and the lower groove 6 on the two side plates 1 are in a symmetrical state, two ends of an upper screen mesh 51 are respectively arranged in the middle grooves 5 on the two side plates 1, a sliding block 46 on one end of a cross rod 44 is connected in the upper groove 4 on the side plate 1 on the other side in a sliding manner, and a parallel linkage gear 69 on the other side wall of a lower screen mesh 66 is meshed in a chain 65 in the lower groove 6 on the other side plate;

when the upper screen 51 is blocked, the scraper 67 is arranged on the lower screen 66 and the bottom wall of the cross bar 44, at this time, because the lower screen 66 and the cross bar 44 after the scraper 67 is arranged can contact the bottom surface and the top surface of the upper screen 51, the lower screen 66 and the cross bar 44 move along the directions of the upper groove 4 and the lower groove 6 through the rotation of the motor 61, and then the blocked coal in the upper screen 51 can be shoveled or crushed, so that the descending of the screening progress caused by the long-time blocking of the screen by the coal particles is avoided, and when the blockage is removed, the brush 45 can clean the residual coal ash on the upper screen 51, and further clean the upper screen 51.

Example 2:

furthermore, a second bevel gear 63 is fixedly sleeved on the rotating shaft 62, tooth grooves on an outer ring wall of the second bevel gear 63 are meshed with tooth grooves on one side wall of a third bevel gear 71, the third bevel gear 71 is fixedly connected to two ends of the connecting shaft 7, the connecting shaft 7 rotatably penetrates through the side wall of the side plate 1 to the upper groove 4, and a sleeve 72 is arranged at the connecting position of the connecting shaft 7 and the side plate 1. Tooth spaces on one side wall of a bevel gear III 71 arranged at one end of the connecting shaft 7 in the upper groove 4 are meshed with tooth spaces on the wall of an outer ring of a bevel gear I43 fixedly sleeved on the screw shaft 40, and outer rings at two ends of the screw shaft 40 are fixedly connected in inner rings of bearings 41 fixedly arranged in inner walls at two ends of the upper groove 4.

The screw shaft 40 penetrates through the cross rod 44 in a sliding mode, a threaded ring 42 is arranged at the connecting position of the cross rod 44 and the screw shaft 40, the other end of the cross rod 44 is fixedly connected with a sliding block 46, the sliding block 46 is installed in the upper groove 4 in the side wall of the side plate 1 on the other side in a sliding mode, a scraping plate 67 is also clamped on the bottom wall of the cross rod 44, the scraping plate 67 is connected with the top wall of the upper screen mesh 51 in a friction mode, a brush 45 is further fixedly connected to the bottom wall of the cross rod 44, and the brush 45 is also connected with the top wall of the upper screen mesh 51 in a friction mode.

The four corners of the bottom wall of the upper screen 51 are fixedly connected with one end of a spring 54, the other end of the spring 54 is fixedly connected with the inner wall of the middle groove 5, the top wall of the upper screen 51 is fixedly provided with a hoisting frame 52, and the bottom wall of the hoisting frame 52 is fixedly hoisted with a vibration motor 53. The vibration motor 53 arranged on the upper screen 51 through the hoisting frame 52 vibrates during working, so that the upper screen 51 vibrates, and the reciprocating vibration is carried out under the action of the spring 54, so that the coal can be primarily screened; the lower screen 66 and cross bar 44 are not used and are always in the coal dead zone and do not move.

A part of coal enters the lower screen 66 through the upper screen 51, the coal can be further screened through the lower screen 66, because the scraper 67 is clamped on the lower screen 66, when the lower screen 66 is used for screening fine-grained coal, the scraper 67 needs to be removed, the coal is more convenient to drain, meanwhile, the top wall of the scraper 67 is in contact friction connection with the bottom wall of the upper screen 51, and the scraper 67 below the cross rod 44 is also in contact friction connection with the top wall of the upper screen 51, so that the lower screen 51 and the cross rod 44 do not contact the upper screen 51 when the upper screen 51 vibrates.

The size of the lower screen 66 is one third of that of the upper screen 51, and the diameter of the leaking holes on the lower screen 66 is larger than that of the leaking holes on the upper screen 51.

The working principle is as follows: when the device is normally used, coal particles are poured onto the upper screen mesh 51 (the vibration motor 53 needs to be protected from being damaged), at this time, the vibration motor 53 vibrates during working, the upper screen mesh 51 vibrates, meanwhile, the reciprocating vibration is carried out under the action of the spring 54, the coal can be primarily screened, when the upper screen mesh 51 is blocked, the scraper 67 is installed on the lower screen mesh 66 and the bottom wall of the cross rod 44, at this time, the lower screen mesh 66 and the cross rod 44 after the scraper 67 is installed can contact the bottom surface and the top surface of the upper screen mesh 51, the rotating shaft 62 is rotated through the motor 61, the driving gear 64 drives the chain 65, the linkage gear 69 rotates, the lower screen mesh 66 moves, meanwhile, the rotating shaft 62 drives the bevel gear II 63, the bevel gear III 71 is linked with the bevel gear I43 to rotate, the screw shaft 40 rotates, the cross rod 44 moves, the lower screen mesh 66 and the cross rod 44 move along the direction of the upper groove 4 and the lower groove 6, the blocked coal in the upper screen mesh 51 can be cleaned, and the residual coal dust in the upper screen mesh 51 can be cleaned.

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

Claims

1. The utility model provides a colliery screening installation, includes parallel curb plate (1), through conveyer belt structure (2) fixed connection, its characterized in that between the bottom of curb plate (1):

the inner side wall of the side plate (1) is provided with three upper grooves (4), a middle groove (5) and a lower groove (6) which are parallel to each other in a penetrating mode, a screw shaft (40) is arranged in each upper groove (4), an upper screen (51) is arranged in each middle groove (5), a parallel motor (61) is fixedly arranged in the inner wall of each lower groove (6), one end of each motor (61) is fixedly connected with a rotating shaft (62), driving gears (64) are fixedly sleeved on the rotating shafts (62), the driving gears (64) on the two rotating shafts (62) are movably connected through a chain (65), two groups of linkage gears (69) are rotatably arranged in the chains (65), the linkage gears (69) are fixedly connected onto a fixed shaft (68), and the fixed shaft (68) is fixedly connected onto two end walls of the lower screen (66);

the top wall of the lower screen (66) is clamped with the parallel conical scrapers (67), and the top wall of each scraper (67) is connected with the bottom wall of the upper screen (51) in a friction mode.

2. The coal mine screening apparatus of claim 1, wherein: the rotating shaft (62) is also fixedly sleeved with a second bevel gear (63), a tooth groove in the outer ring wall of the second bevel gear (63) is meshed with a tooth groove in one side wall of a third bevel gear (71), the third bevel gear (71) is fixedly connected to two ends of the connecting shaft (7), the connecting shaft (7) rotates to penetrate through the side wall of the side plate (1) to the upper groove (4), and a sleeve (72) is arranged at the connecting position of the connecting shaft (7) and the side plate (1).

3. A coal mine screening apparatus as claimed in claim 2, in which: tooth grooves on one side wall of a bevel gear III (71) arranged at one end of the connecting shaft (7) in the upper groove (4) are meshed with tooth grooves on the wall of an outer ring of a bevel gear I (43) fixedly sleeved on the screw shaft (40), and outer rings at two ends of the screw shaft (40) are fixedly connected in inner rings of bearings (41) fixedly arranged in inner walls at two ends of the upper groove (4).

4. The coal mine screening apparatus of claim 1, wherein: slide on screw shaft (40) and run through horizontal pole (44), and the junction of horizontal pole (44) and screw shaft (40) is equipped with screw ring (42), the other end rigid coupling slider (46) of horizontal pole (44), and slider (46) slidable mounting in last groove (4) on opposite side curb plate (1) lateral wall, the diapire of horizontal pole (44) also clamps scraper blade (67), and scraper blade (67) frictional connection goes up the roof of screen cloth (51), the diapire of horizontal pole (44) still rigid coupling has brush (45), and brush (45) also frictional connection goes up the roof of screen cloth (51).

5. The coal mine screening apparatus of claim 1, wherein: go up the one end of rigid coupling spring (54) on the four corners of screen cloth (51) diapire, and the other end rigid coupling of spring (54) is at well inslot (5) inner wall, the roof of going up screen cloth (51) is fixed to be equipped with hoist and mount frame (52), and the diapire fixed hoist and mount of hoist and mount frame (52) have vibrating motor (53).

6. The coal mine screening apparatus of claim 1, wherein: the size of the lower screen (66) is one third of that of the upper screen (51), and the diameter of the leakage hole on the lower screen (66) is larger than that of the leakage hole on the upper screen (51).