Crushing device for tailing treatment

Abstract

The crushing device for tailing treatment comprises a box body, two crushing rollers capable of rotating oppositely are arranged in the box body, the upper end of the box body is connected with a feeding pipe located between the two crushing rollers, and a material guiding structure capable of distributing materials to different positions of the crushing rollers in the axial direction of the crushing rollers is arranged in the feeding pipe. The problems that due to the fact that many materials are stacked in the middle of the crushing roller, the load of the middle of the crushing roller is large, the roller surface is seriously abraded, and the service life of the roller surface is affected can be solved.

Description

Technical Field

[0001] The present application relates to crushing technology, and particularly to a crushing device for tailings treatment. Background Art

[0002] In the production process of hollow bricks or perforated bricks, iron tailings raw materials are usually coarsely crushed by a crushing device.

[0003] Currently, a commonly used crushing device for iron tailings treatment includes a box body. Inside the box body, there are two oppositely rotating crushing rolls. At the upper end of the box body, there is a feeding port located between the two crushing rolls. During the coarse crushing of iron tailings, the iron tailings are first conveyed by a belt conveyor to the upper part of the feeding port, and then fall by their own gravity between the two crushing rolls for coarse crushing. However, the belt conveyor generally uses V-shaped idlers, so that the cross-section of the belt arranged on the V-shaped idlers is also V-shaped. When the belt conveys iron tailings, the iron tailings on the belt are also distributed in a V shape along with the shape of the belt, that is, the state where there is more iron tailings in the middle of the belt and less on both sides is formed. Moreover, the position with more materials in the middle is opposite to the middle position of the crushing roll. Therefore, after the iron tailings enter the box body, too much material accumulates at the middle position of the crushing roll, resulting in a large load at the middle position of the crushing roll and serious wear of the roll surface, affecting the service life of the roll surface. Utility Model Content

[0004] The present application provides a crushing device for tailings treatment to solve the problems that when the existing crushing device for tailings treatment crushes iron tailings, the load at the middle position of the crushing roll is large, the roll surface is severely worn, and the service life of the roll skin is affected.

[0005] The present application provides a crushing device for tailings treatment, including a box body, and two oppositely rotatable crushing rolls are arranged inside the box body;

[0006] A feeding pipe located between the two crushing rolls is connected to the upper end of the box body;

[0007] A feeding guide structure capable of distributing materials to different positions of the crushing roll along the axial direction of the crushing roll is arranged inside the feeding pipe.

[0008] Optionally, the feeding guide structure includes a guide plate, the guide plate is fixed at the middle position inside the feeding pipe, and the guide plate is in an inverted V-shaped structure and is distributed along the axial direction of the crushing roll;

[0009] A through leakage hole is opened at the middle position of the guide plate, and leakage notches are opened at the middle positions of both ends of the guide plate.

[0010] Optionally, a plurality of equally spaced support rods are fixed at the lower end of the guide plate, and the support rods are fixedly connected to the inner wall of the feeding pipe.

[0011] Optionally, a wear-resistant structure is provided at the upper end of the material guiding plate.

[0012] Optionally, the wear-resistant structure adopts a grid plate adapted to the material guiding plate, and the grid plate is fixed at the upper end of the material guiding plate.

[0013] Optionally, the feed pipe is a hollow structure with an open lower end, and the open end of the feed pipe is connected and sealed to the box body; a feed port is opened at one side end of the feed pipe;

[0014] Further included is a discharge box, which is a hollow structure with an open upper end. The upper end of the discharge box is connected and sealed to the lower end of the box body, and a discharge port is opened at one side end of the discharge box;

[0015] Dust suction structures connected to a bag filter are provided at both the position of the feed port and the position of the discharge port.

[0016] Optionally, the dust suction structure includes an annular pipe. A plurality of dust suction ports are opened on the inner ring wall of the annular pipe, and the annular pipe is connected to the bag filter through a connecting pipeline.

[0017] Compared with the prior art, the beneficial effects of this application are as follows:

[0018] For the crushing device for tailings treatment provided by this application, two crushing rolls that can rotate towards each other are provided inside the box body. The upper end of the box body is connected with a feed pipe located between the two crushing rolls. A material guiding structure capable of distributing materials to different positions of the crushing rolls along the axial direction of the crushing rolls is provided inside the feed pipe. When the belt conveyor conveys the materials to be crushed to the crushing rolls, the materials distributed in a V shape on the belt conveyor first fall from the belt onto the material guiding structure, and then the material guiding structure disperses the materials to different positions of the crushing rolls. Thus, it can avoid the problem that a large amount of materials accumulates at the middle position of the crushing rolls, resulting in a large load at the middle position of the crushing rolls, serious wear of the roll surface, and affecting the service life of the roll surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] Figure 1 It is the front view structural schematic diagram of the crushing device for tailings treatment provided by the embodiment of this application;

[0021] Figure 2 It is the partial top view structural schematic diagram of the crushing device for tailings treatment provided by the embodiment of this application;

[0022] Figure 3 This is a schematic diagram of the partial front view sectional structure of the crushing device for tailings treatment provided by the embodiment of the present application;

[0023] Figure 4 This is a schematic diagram of the partial three-dimensional structure of the crushing device for tailings treatment provided by the embodiment of the present application;

[0024] Figure 5 This is a schematic diagram of the dust suction structure of the crushing device for tailings treatment provided by the embodiment of the present application.

[0025] Explanation of reference numerals: box body 1, crushing roller 2, bracket 3, belt driving mechanism 4, motor 5, feed pipe 6, feed inlet 7, discharge box 8, discharge outlet 9;

[0026] Material guiding structure 10, material guiding plate 11, leakage hole 12, leakage notch 13, support rod 14, wear-resistant structure 15;

[0027] Dust suction structure 16, annular pipe 17, dust suction port 18, connecting pipeline 19;

[0028] First belt conveyor 20, second belt conveyor 21. Detailed implementation manners

[0029] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts also belong to the scope of protection of the present application.

[0030] As Figures 1-5 shown:

[0031] A crushing device for tailings treatment provided by an embodiment of the present application includes a box body 1, and two crushing rollers 2 capable of rotating towards each other are arranged inside the box body 1.

[0032] In this embodiment, it further includes a bracket 3, and the box body 1 is fixed on the bracket 3. The bottom of the box body 1 is of a hopper-shaped structure, which is convenient for discharging materials from the box body 1. The crushing roller 2 is rotationally connected to the box wall of the box body 1 through a bearing. Each crushing roller 2 is connected to a motor 5 through a belt driving mechanism 4, and the motor 5 is fixed on the bracket 3.

[0033] Further, a protective cover (not shown in the figure) is sleeved on the belt driving mechanism, and the protective cover is fixedly connected to the frame.

[0034] The upper end of the box body 1 is connected with a feed pipe 6 located between the two crushing rollers 2. Specifically, the feed pipe 6 is located above the middle between the two crushing rollers 2.

[0035] Inside the feed pipe 6, there is a material guiding structure 10 that can distribute materials along the axial direction of the crushing roller 2 to different positions of the crushing roller 2.

[0036] In this embodiment, the discharge end of the first belt conveyor 20 for conveying the iron tailings to be crushed extends into the feed pipe 6, and the iron tailings can just fall onto the material guiding structure 10 from the falling opening of the first belt conveyor 20. A first belt conveyor 20 is provided at the bottom of the box body 1 for conveying the crushed iron tailings.

[0037] During use, two motors 5 are turned on simultaneously. Each motor 5 drives the connected crushing roller 2 to rotate, so that the two crushing rollers 2 rotate towards each other. Then, the first belt conveyor 20 conveys the iron tailings to be crushed into the feed pipe 6. The materials distributed in a V shape on the first belt conveyor 20 first fall from its belt onto the material guiding structure 10, and then the material guiding structure 10 disperses the materials to different positions of the crushing roller 2. The two crushing rollers 2 rotate towards each other to crush the iron tailings by extrusion. The crushed iron tailings fall to the bottom of the box body 1 and are discharged from the box body 1, and are conveyed to the next process by the second belt conveyor 21.

[0038] For the crushing device for tailings treatment provided in this embodiment, since there are two crushing rollers 2 that can rotate towards each other inside the box body 1, the upper end of the box body 1 is connected with a feed pipe 6 located between the two crushing rollers 2, and there is a material guiding structure 10 inside the feed pipe 6 that can distribute materials along the axial direction of the crushing roller 2 to different positions of the crushing roller 2. When the belt conveyor conveys the materials to be crushed to the crushing roller 2, the material guiding structure 10 can disperse the materials to different positions of the crushing roller 2, thereby avoiding the problem that a large amount of materials accumulate at the middle position of the crushing roller 2, resulting in a large load at the middle position of the crushing roller 2, serious wear of the roller surface, and affecting the service life of the roller surface.

[0039] In some embodiments of the present application, the material guiding structure 10 includes a material guiding plate 11. The material guiding plate 11 is fixed at the middle position inside the feed pipe 6, and the material guiding plate 11 has an inverted V-shaped structure and is distributed along the axial direction of the crushing roller 2.

[0040] A through leakage hole 12 is opened at the middle position of the material guiding plate 11, and leakage notches 13 are opened at the middle positions of both ends of the material guiding plate 11.

[0041] In this embodiment, there is an annular gap between the edge of the material guiding plate 11 and the inner wall of the feed pipe 6.

[0042] During use, after the iron tailings on the first belt conveyor 20 fall onto the material guiding plate 11, some of the iron tailings directly fall from the leakage holes 12 to the middle position of the crushing roller 2, and some of the iron tailings flow along the material guiding plate 11 to both sides of the crushing roller 2. Among the iron tailings flowing along the material guiding plate 11, some fall from the ends of the material guiding plate 11 to both side parts of the crushing roller 2, and some fall from the discharge notch to the middle position between the middle position of the crushing roller 2 and the side part of the crushing roller 2. Thus, the iron tailings can be dispersed to different positions of the crushing roller 2 through the material guiding structure 10, and the dispersion work can be carried out according to the self-gravity of the iron tailings without additional power input, achieving the effect of energy saving.

[0043] In addition, since there is an annular gap between the edge of the material guiding plate 11 and the inner wall of the feed pipe 6, when the iron tailings flow along the material guiding plate 11, some of the iron tailings can fall from the long edge of the material guiding plate 11 to different positions of the crushing roller 2, thus improving the dispersion effect.

[0044] In some embodiments of the present application, a plurality of support rods 14 evenly distributed are fixed at the lower end of the material guiding plate 11, and the support rods 14 are fixedly connected to the inner wall of the feed pipe 6, thereby fixing the material guiding plate 11 in the feed pipe 6.

[0045] In order to improve the service life of the material guiding plate 11. In some embodiments of the present application, a wear-resistant structure 15 is provided at the upper end of the material guiding plate 11.

[0046] In some embodiments of the present application, the wear-resistant structure 15 adopts a grid plate adapted to the material guiding plate 11, and the grid plate is fixed at the upper end of the material guiding plate 11.

[0047] During use, after the iron tailings fall from the first belt conveyor 20, they first fall onto the grid plate. Then, when the iron tailings flow on the grid plate, some iron tailings smaller than the holes of the grid plate fill the holes. When all the holes of the grid plate are filled with iron tailings and a material lining is formed at the upper end of the grid plate, the iron tailings falling from the first belt conveyor 20 will fall onto the material lining and slide from the material lining to different positions of the crushing roller 2. Thus, the iron tailings can avoid wearing the material guiding plate 11 by the way of material grinding against material, improving the service life of the material guiding plate 11.

[0048] In some embodiments of the present application, the feed pipe 6 is a hollow structure with an open lower end. The open end of the feed pipe 6 is connected and sealed to the box body 1; a feed port 7 is opened at one side end of the feed pipe 6.

[0049] It further includes a discharge box 8. The discharge box 8 is a hollow structure with an open upper end. The upper end of the discharge box 8 is connected and sealed to the lower end of the box body 1, and a discharge port 9 is opened at one side end of the discharge box 8;

[0050] Dust collection structures 16 connected to a bag filter are provided at both the position of the feed port 7 and the position of the discharge port 9.

[0051] In this embodiment, the first belt conveyor 20 extends from the feed inlet 7 into the feed pipe 6. The second belt conveyor 21 extends from the discharge outlet 9 into the discharge box 8 and is located below the discharge opening at the lower end of the box body 1 for receiving the materials discharged from the box body 1.

[0052] During use, when the dust generated by the crushing roller 2 and the dust generated when the iron tailings fall onto the guiding structure 10 diffuse from the feed inlet 7 to the outside, the dust suction structure 16 at the position of the feed inlet 7 can suck the dust floating to the position of the feed inlet 7. When the dust generated when the crushed iron tailings fall onto the second belt conveyor 21 diffuses from the discharge outlet 9 to the outside, the dust suction structure 16 at the position of the discharge outlet 9 sucks the dust floating to the position of the discharge outlet 9. Thus, during the crushing operation, the diffusion of dust to the external environment can be avoided.

[0053] In order to improve the dust suction effect, in some embodiments of the present application, the dust suction structure 16 includes an annular pipe 17. A plurality of dust suction openings 18 are formed in the inner wall of the annular pipe 17. The annular pipe 17 is connected to a bag filter (not shown in the figure) through a connecting pipeline 19.

[0054] In this embodiment, the annular pipe 17 at the position of the feed inlet 7 is sleeved outside the feed inlet 7 and fixed on the outer wall of the feed pipe 6. The annular pipe 17 at the position of the discharge outlet 9 is sleeved outside the discharge outlet 9 and fixed on the outer wall of the discharge box 8.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A crushing device for tailings treatment, comprising a housing (1), wherein two crushing rollers (2) capable of rotating in opposite directions are arranged inside the housing (1), characterized in that: The upper end of the box body (1) is connected to a feed pipe (6) located between the two crushing rollers (2); The inside of the feed pipe (6) is provided with a material guide structure (10) capable of distributing material to different positions of the crushing roller (2) along the axial direction of the crushing roller (2).

2. The crushing device for tailings treatment according to claim 1, characterized in that: The material guide structure (10) comprises a material guide plate (11), the material guide plate (11) is fixed at the inner middle position of the feed pipe (6), the material guide plate (11) is in an inverted V-shaped structure and is distributed along the axial direction of the crushing roller (2); A through material leakage hole (12) is provided in the middle of the material guide plate (11), and material leakage notches (13) are provided in the middle of both ends of the material guide plate (11).

3. The crushing device for tailings treatment according to claim 2, characterized in that: A plurality of equidistantly distributed support rods (14) are fixed to the lower end of the guide plate (11), and the support rods (14) are fixedly connected to the inner wall of the feed pipe (6).

4. The crushing device for tailings treatment according to claim 2, characterized in that: The upper end of the material guide plate (11) is provided with a wear-resistant structure (15).

5. The crushing device for tailings treatment according to claim 4, characterized in that: The wear-resistant structure (15) adopts a grid plate adapted to the material guide plate (11), and the grid plate is fixed to the upper end of the material guide plate (11).

6. The crushing device for tailings treatment according to claim 1, characterized in that: The feed pipe (6) is a hollow structure with an open lower end, and the open end of the feed pipe (6) is communicated with the box body (1) and is sealed; a feed port (7) is formed at one side end of the feed pipe (6); It also comprises a discharge box (8), the discharge box (8) being a hollow structure with an open upper end, the upper end of the discharge box (8) being communicated with and sealed to the lower end of the box body (1), and a discharge port (9) being formed at one side end of the discharge box (8); The feed port (7) and the discharge port (9) are both provided with dust collecting structures (16) connected to bag dust collectors.

7. The crushing device for tailings treatment according to claim 6, characterized in that: The dust suction structure (16) comprises an annular tube (17), a plurality of dust suction ports (18) are provided on the inner ring wall of the annular tube (17), and the annular tube (17) is connected to the bag dust collector via a connecting pipeline (19).

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