Coal gangue processing and screening device

Abstract

The utility model relates to the technical field of coal gangue processing, and discloses a coal gangue processing and screening device which comprises an outer barrel shell and an upper partition mounting plate seat, and a bottom ring seat is mounted at the bottom of the outer barrel shell. According to the coal gangue processing and screening device, the screening strips are arranged along the spiral track, so that the vertical space can be fully utilized, the occupied area of the device is reduced, the size of the device can be reduced, the device is conveniently suitable for coal gangue screening work in a small space environment, and in the screening process, the screening efficiency is improved. Large coal gangues clamped in gaps between the adjacent screening strips can be lifted upwards through up-down movement of the dredging strips, blockage caused by the fact that the coal gangues are clamped between the adjacent screening strips is prevented, and compared with a screen filtering mode, the equipment has the advantages that the falling resistance of the coal gangues is small, and the screening efficiency is improved. And large coal gangue blocks can quickly slide downwards along the upper direction of the screening strips to be discharged, so that the occurrence of blockage is reduced, and the screening efficiency is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal gangue processing, in particular to a coal gangue processing and screening device. Background Art

[0002] Coal gangue is solid waste discharged during the coal mining and coal washing processes. It is a black-gray rock with a low carbon content and harder than coal that accompanies the coal seam during the coal formation process. Coal gangue is mainly used to produce gangue cement, lightweight aggregate for concrete, refractory bricks and other building materials. In addition, it can also be used to recycle coal, co-burn coal and gangue to generate electricity, produce chemical products such as crystalline aluminum chloride and water glass, and extract precious and rare metals. It can also be used as a fertilizer.

[0003] The utility model patent with application number CN202122583856.4 discloses a screening equipment for the production and processing of coal gangue, including a screening frame, a dropping device, a vibrating screener and a dust collector. A primary trough frame is fixedly installed at the upper end of the outer frame. The equipment can utilize the kinetic energy of the falling coal gangue to vibrate the primary screen to improve the screening effect.

[0004] However, the tilting of the screen of the equipment causes the overall area of ​​the equipment to be larger, and the screen is prone to blockage during the screening process. If the blockage is not dealt with promptly and effectively, the screening efficiency will be reduced, and in severe cases, it may even lead to the inability to perform normal screening work. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a coal gangue processing and screening device, which solves the problems of large equipment footprint, blockage that cannot be cleaned in time, and high screening efficiency.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a coal gangue processing and screening device, comprising an outer cylinder shell and an upper partition mounting plate seat, the bottom of the outer cylinder shell is installed with a bottom ring seat, the bottom of the bottom ring seat is installed with a supporting footrest, the top of the outer cylinder shell is installed with a feeding hopper, the inner wall of the outer cylinder shell is installed with a bottom partition plate at a position close to the bottom, the top of the bottom partition plate is installed with an inner supporting cylinder, the upper partition mounting plate seat is installed on the outer wall of the inner supporting cylinder at a position close to the top, a screening bar is installed on the surface of the upper partition mounting plate seat, a material receiving plate is installed on the surface of the upper partition mounting plate seat at a position below the screening bar, and an anti-blocking device is provided between the screening bar and the material receiving plate;

[0009] The dredge strip is installed on the sliding seat and the rotating cam is installed at a position below the sliding seat through a bearing and the surface of the upper partition mounting plate seat and is rotatably installed under the bearing. The driving motor is installed on the back surface of the upper partition mounting plate seat and is located opposite to the rotating cam. The output end of the driving motor passes through the upper partition mounting plate seat and is installed at the axis center of the rotating cam. The vertical limit groove is opened on the outer surface of the inner support cylinder, and the vertical seat is movably connected to the inside of the vertical limit groove. The support cross bar is installed on the outer side surface of the vertical seat, and the end of the support cross bar extending to the outside of the vertical limit groove is connected to the dredge strip.

[0010] Preferably, the screening strips, dredging strips and receiving plates are all spiral and have equal pitches.

[0011] Preferably, the diameter of the dredging strip is smaller than the diameter of the screening strip, there are a plurality of dredging strips and a plurality of screening strips, and the dredging strips are arranged directly below adjacent screening strips.

[0012] Preferably, the lower end of the screening bar is bent downward in a semicircle and mounted on the surface of the bottom partition plate.

[0013] Preferably, the length of the receiving plate is smaller than the length of the screening bar, the heights of the bottom partition plates on both sides of the inner support tube are not equal, the bottom end of the receiving plate is installed on the higher side surface of the top of the bottom partition plate, and the bottom end of the screening bar is installed on the lower side surface of the top of the bottom partition plate.

[0014] Preferably, the horizontal spacing between adjacent screening bars is smaller than the vertical distance between the dredging bar and the screening bar.

[0015] Compared with the prior art, the utility model provides a coal gangue processing and screening device, which has the following beneficial effects:

[0016] 1. The screening bar of the gangue processing and screening device is arranged along a spiral track, so that the vertical space can be fully utilized, the floor space of the device is reduced, and the size of the device can be reduced, so that the gangue screening work can be carried out in a smaller space environment.

[0017] 2. During the screening process, the gangue processing and screening device can lift up the larger pieces of gangue stuck in the gap between adjacent screening bars by moving the dredging bars up and down, so as to prevent the gangue from being stuck between adjacent screening bars and causing blockage. Compared with the screen filtering method, the device has less resistance to the falling of gangue, and the large pieces of gangue can quickly slide down and be discharged along the screening bars, which reduces the occurrence of blockage and further improves the screening efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0020] Figure 3 For this utility model Figure 2 A magnified view of the structure at center;

[0021] Figure 4 For this utility model Figure 2 Enlarged view of the structure at point B in the middle.

[0022] Among them: 1. outer cylinder shell; 2. bottom ring seat; 3. supporting footrest; 4. feeding hopper; 5. bottom partition plate; 6. inner supporting cylinder; 7. upper partition mounting plate seat; 8. screening bar; 9. anti-blocking device; 91. sliding seat; 92. dredging strip; 93. rotating cam; 94. driving motor; 95. vertical limit groove; 96. vertical clamping seat; 97. supporting cross bar; 10. receiving plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-4 The utility model provides a coal gangue processing and screening device, including an outer cylinder shell 1 and an upper partition mounting plate seat 7, a bottom ring seat 2 is installed at the bottom of the outer cylinder shell 1, a supporting foot frame 3 is installed at the bottom of the bottom ring seat 2, a feeding hopper 4 is installed at the top of the outer cylinder shell 1, a bottom partition plate 5 is installed on the inner wall of the outer cylinder shell 1 and is located near the bottom, an inner supporting cylinder 6 is installed on the top of the bottom partition plate 5, the upper partition mounting plate seat 7 is installed on the outer wall of the inner supporting cylinder 6 and is located near the top, a screening bar 8 is installed on the surface of the upper partition mounting plate seat 7, a material receiving plate 10 is installed on the surface of the upper partition mounting plate seat 7 and is located at the lower side of the screening bar 8, an anti-blocking device 9 is arranged between the screening bar 8 and the material receiving plate 10, and the upper partition mounting plate seat 7 is installed on the outer side of the inner supporting cylinder 6 and is located on the side away from the feeding hopper 4, so that the raw materials added into the inner part of the outer cylinder shell 1 through the feeding hopper 4 can first fall on the top of the screening bar 8 for screening, and will not fall on the top of the driving motor 94;

[0025] The anti-blocking device 9 includes a sliding seat 91, a dredging strip 92, a rotating cam 93, a driving motor 94, a vertical limit groove 95, a vertical clamping seat 96 and a supporting cross bar 97. The sliding seat 91 is slidably clamped with the surface of the upper partition mounting plate seat 7 and located at the lower side of the screening strip 8. The dredging strip 92 is installed on the surface of the sliding seat 91 away from the side of the upper partition mounting plate seat 7. The rotating cam 93 is rotatably installed with the surface of the upper partition mounting plate seat 7 and located below the sliding seat 91 through a bearing. The driving motor 94 is installed on the back surface of the upper partition mounting plate seat 7 and is located opposite to the rotating cam 93. The output end of the driving motor 94 passes through the upper partition mounting plate seat 7. The mounting plate seat 7 is installed at the axial position of the rotating cam 93, the vertical limit groove 95 is opened on the outer surface of the inner support tube 6, the vertical clamping seat 96 is movably clamped in the inside of the vertical limit groove 95, the supporting cross bar 97 is installed on the outer side surface of the vertical clamping seat 96, and the end of the supporting cross bar 97 extending to the outside of the vertical limit groove 95 is connected to the dredging strip 92. The bottom of the sliding seat 91 is located above the rotating cam 93 and is inlaid with a bearing for reducing the friction between the rotating cam 93 and its contact surface. When the rotating cam 93 contacts the bottom of the sliding seat 91, it contacts the bearing, thereby reducing the friction, and the rotating cam 93 pushes the sliding seat 91 to move upward through the bearing.

[0026] Furthermore, the screening bar 8, the dredging bar 92 and the receiving plate 10 are all spiral in shape and have equal pitches. The screening bar 8, the dredging bar 92 and the receiving plate 10 are arranged vertically in parallel. The screening and filtering work is performed by the screening bar 8, the dredging bar 92 is used to clean and unblock the screening bar 8, and the receiving plate 10 is used to receive the screened fine coal gangue and transmit it downward.

[0027] Furthermore, the diameter of the dredge strip 92 is smaller than the diameter of the screening strip 8. There are several dredge strips 92 and several screening strips 8. The dredge strips 92 are arranged directly below the adjacent screening strips 8, so that the spacing between the adjacent screening strips 8 is smaller than the spacing between the adjacent dredge strips 92, so that the coal gangue filtered out by the screening strips 8 can smoothly pass through the gaps between the adjacent dredge strips 92 and fall to the top of the receiving plate 10 and move downward.

[0028] Furthermore, the lower end of the screening bar 8 is bent downward in a semicircle and mounted on the surface of the bottom partition plate 5 , and the lower end of the screening bar 8 is supported and fixed by the bottom partition plate 5 .

[0029] Furthermore, the length of the receiving plate 10 is smaller than the length of the screening bar 8, and the heights of the bottom dividing plate 5 on both sides of the inner supporting tube 6 are not equal. The bottom end of the receiving plate 10 is installed on the higher side surface of the top of the bottom dividing plate 5, and the bottom end of the screening bar 8 is installed on the lower side surface of the top of the bottom dividing plate 5, so that the rear ends of the screening bar 8 and the receiving plate 10 point in different directions, and then the space at the lower ends of the two is separated by the bottom dividing plate 5, so that the large pieces of coal gangue filtered out by the screening bar 8 and the small pieces of coal gangue received by the receiving plate 10 are separated and processed, which is convenient for the collection of the coal gangue after screening.

[0030] Furthermore, the horizontal spacing between adjacent screening bars 8 is smaller than the vertical distance between the dredging bar 92 and the screening bar 8 , so that the coal gangue screened by the screening bar 8 will not be tilted and stuck in the gap between the screening bar 8 and the sliding seat 91 .

[0031] When in use, the gangue to be screened is added to the interior of the outer cylinder shell 1 through the feeding hopper 4. After the gangue enters the interior of the outer cylinder shell 1, it falls on the top of the screening bar 8, and then rolls downward along the top of the screening bar 8. The smaller gangue will pass through the gap between the adjacent screening bars 8, and the larger gangue will roll downward along the spiral track above the screening bar 8. At the same time, the driving motor 94 is started, and the rotating cam 93 is driven by the driving motor 94 to rotate. When the rotating cam 93 rotates, the protrusion on its outer surface will continuously push the sliding seat 91 to move upward. After the protrusion moves over the sliding seat 91, the sliding seat 91 is under the action of gravity. The dredging strip 92 moves upward and then falls downward, and the distance between it and the screening strip 8 becomes smaller, thereby pushing the large pieces of coal gangue stuck between the adjacent screening strips 8 to move upward, so that the coal gangue can continue to roll downward along the top of the screening strip 8, preventing the large pieces of coal gangue from being stuck on the surface of the screening strip 8 and affecting the screening efficiency. The screened coal gangue falls to the top of the receiving plate 10, slides downward along the top of the receiving plate 10, and is finally discharged downward. The large pieces of coal gangue filtered out by the screening strip 8 slide along the top of the screening strip 8, and finally slides downward from the bottom end of the screening strip 8. The smaller coal gangue and the larger coal gangue are separated on both sides by the bottom partition plate 5, thereby completing the screening work.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coal gangue processing and screening device, comprising an outer cylinder shell (1) and an upper partition mounting plate seat (7), characterized in that: A bottom ring seat (2) is installed at the bottom of the outer cylinder shell (1), a supporting stand (3) is installed at the bottom of the bottom ring seat (2), a feeding hopper (4) is installed at the top of the outer cylinder shell (1), a bottom partition plate (5) is installed on the inner wall of the outer cylinder shell (1) and located near the bottom, an inner support cylinder (6) is installed on the top of the bottom partition plate (5), the upper partition mounting plate seat (7) is installed on the outer wall of the inner support cylinder (6) and located near the top, a screening bar (8) is installed on the surface of the upper partition mounting plate seat (7), a material receiving plate (10) is installed on the surface of the upper partition mounting plate seat (7) and located below the screening bar (8), and an anti-blocking device (9) is provided between the screening bar (8) and the material receiving plate (10); The anti-blocking device (9) comprises a sliding seat (91), a dredging strip (92), a rotating cam (93), a driving motor (94), a vertical limit groove (95), a vertical clamping seat (96) and a supporting cross bar (97); the sliding seat (91) is slidably clamped with the surface of the upper partition mounting plate seat (7) and located at a position below the screening strip (8); the dredging strip (92) is installed on a side surface of the sliding seat (91) away from the upper partition mounting plate seat (7); the rotating cam (93) is rotatably installed through a bearing and the surface of the upper partition mounting plate seat (7) and located at a position below the sliding seat (91); The driving motor (94) is installed on the back surface of the upper partition mounting plate seat (7) and is located opposite to the rotating cam (93). The output end of the driving motor (94) passes through the upper partition mounting plate seat (7) and is installed at the axial position of the rotating cam (93). The vertical limit groove (95) is opened on the outer surface of the inner support tube (6). The vertical clamping seat (96) is movably clamped in the inside of the vertical limit groove (95). The supporting cross bar (97) is installed on the outer side surface of the vertical clamping seat (96). One end of the supporting cross bar (97) extending to the outside of the vertical limit groove (95) is connected to the dredging strip (92).

2. A coal gangue processing and screening device according to claim 1, characterized in that: The screening strips (8), the dredging strips (92) and the material receiving plate (10) are all spiral-shaped and have equal pitches.

3. The coal gangue processing and screening device according to claim 1, characterized in that: The diameter of the dredging strip (92) is smaller than the diameter of the screening strip (8). There are a plurality of dredging strips (92) and a plurality of screening strips (8). The dredging strip (92) is arranged directly below adjacent screening strips (8).

4. The coal gangue processing and screening device according to claim 1, characterized in that: The lower end of the screening bar (8) is bent downward in a semicircular shape and is mounted on the surface of the bottom partition plate (5).

5. The coal gangue processing and screening device according to claim 1, characterized in that: The length of the receiving plate (10) is less than the length of the screening bar (8); the heights of the bottom partition plate (5) on both sides of the inner support tube (6) are unequal; the bottom end of the receiving plate (10) is mounted on a higher side surface of the top of the bottom partition plate (5); and the bottom end of the screening bar (8) is mounted on a lower side surface of the top of the bottom partition plate (5).

6. The coal gangue processing and screening device according to claim 1, characterized in that: The horizontal spacing between adjacent screening strips (8) is smaller than the vertical distance between the dredging strip (92) and the screening strip (8).

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