Grinding device for mine filling material

Abstract

The utility model relates to the technical field of mine filling equipment, in particular to a mine filling material grinding device which comprises a grinding bin. The secondary crushing mechanism comprises a pair of first crushing rollers and a pair of second crushing rollers, the first crushing rollers are arranged in the grinding bin, a flow guide screen is arranged below the first crushing rollers, the flow guide screen is in a herringbone shape, and a pair of second crushing rollers is arranged below each of the two sides of the flow guide screen; the device solves the problems that a traditional grinding device is poor in grinding effect and lacks a dust removal function.

Description

Technical Field

[0001] This utility model relates to the technical field of mine backfilling equipment, specifically to a grinding device for mine backfilling materials. Background Technology

[0002] Mine backfill materials refer to materials used to fill mine voids (such as goaf, mine shafts, etc.) during the mining process. These materials serve to support the ore body structure, prevent mine collapse, and improve the safety and stability of the mine. Mine backfill material grinding equipment is used to crush and grind raw materials such as ore, tailings, and slag into fine powder.

[0003] Most existing grinding devices for mine backfill materials use crushing rollers to crush the raw materials. However, crushing rollers are prone to insufficient crushing, requiring secondary crushing, which is time-consuming and labor-intensive. In addition, during crushing, the raw materials rub violently against the crushing rollers, generating a large amount of dust. If there is a lack of corresponding dust removal devices, the dust can easily spread outward, polluting the surrounding environment and adversely affecting the health of workers. Therefore, it is necessary to develop a grinding device with good crushing effect and dust removal function. Utility Model Content

[0004] The purpose of this invention is to provide a grinding device for mine filling materials, which solves the problems of poor grinding effect and lack of dust removal function of traditional grinding devices.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] This utility model provides a grinding device for mine backfill materials, including a grinding chamber and a secondary crushing mechanism. The secondary crushing mechanism includes a first crushing roller and a second crushing roller. The first crushing roller is arranged in a pair inside the grinding chamber. A guide screen is provided below the first crushing roller. The guide screen is shaped like a herringbone. A pair of second crushing rollers are provided on both sides below the guide screen.

[0007] Furthermore, the grinding chamber has a feed inlet at the top and a discharge outlet at the bottom.

[0008] Furthermore, several dust suction holes are provided on both sides of the feed inlet.

[0009] Furthermore, suction boxes are provided on both sides of the feed inlet.

[0010] Furthermore, suction fans are provided on both sides of the grinding chamber, and a dust suction pipe is connected between the suction fans and the suction box, with a filter installed on the dust suction pipe.

[0011] Furthermore, the lower part of the grinding chamber is provided with support legs.

[0012] Furthermore, the diameter of the first crushing roller is larger than the diameter of the second crushing roller.

[0013] Technical effects of this utility model:

[0014] Compared with existing technologies, the grinding device for mine backfill materials involved in this utility model achieves secondary grinding by setting a first grinding roller and a second grinding roller, which greatly improves the grinding effect and grinding efficiency. By setting a guide screen to guide and screen the backfill material, small particles of backfill material can pass through the guide screen, while larger particles of backfill material are guided to the second grinding roller, effectively reducing the burden on the second grinding roller and further improving the grinding efficiency of the device. By setting dust suction holes and a suction fan, the device can absorb the dust that escapes outward, effectively reducing dust pollution during the grinding process and strengthening environmental protection. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0016] Figure 2 This utility model Figure 1 Enlarged schematic diagram of part A;

[0017] Figure 3 This is a schematic diagram of the internal structure of this utility model.

[0018] in:

[0019] 1. Grinding bin; 2. Feed inlet; 3. Dust suction pipe; 4. Filter; 5. Fan; 6. Support leg; 7. Discharge port; 8. Dust suction hole; 9. Air suction box; 10. First crushing roller; 11. Second crushing roller; 12. Guide screen. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example:

[0022] like Figure 1-3As shown in this embodiment, a grinding device for mine backfill material includes a grinding chamber 1 and a secondary grinding mechanism. The secondary grinding mechanism includes a first grinding roller 10 and a second grinding roller 11. A pair of first grinding rollers 10 are disposed inside the grinding chamber 1. A guide screen 12 is provided below the first grinding rollers 10. The guide screen 12 is herringbone shaped. A pair of second grinding rollers 11 are provided on both sides below the guide screen 12. The diameter of the first grinding rollers 10 is larger than the diameter of the second grinding rollers 11. During grinding, the backfill material is input into the grinding chamber 1. Then, under the action of gravity, the backfill material falls between the two first grinding rollers 10. The two first grinding rollers 10 are then controlled to rotate relative to each other. Under the grinding action of the first grinding rollers 10, the backfill material is ground. After the initial crushing of the filling material is completed, the initially crushed filling material continues to fall. Under the diversion and screening action of the guide screen 12, the small particles of filling material fall to the bottom of the grinding chamber 1, while the larger particles of filling material roll along the guide screen 12 and fall to the second crushing roller 11. The second crushing roller 11 is started to rotate, and the larger particles of filling material are crushed a second time. By setting the first crushing roller 10 and the second crushing roller 11 to achieve secondary crushing, the crushing effect of the device is greatly improved and the crushing efficiency is increased. By setting the guide screen 12 to guide and screen the filling material, the small particles of filling material can pass through the guide screen 12, and the larger particles of filling material are guided to the second crushing roller 11, which effectively reduces the burden on the second crushing roller 11 and further improves the crushing efficiency of the device.

[0023] The grinding chamber 1 has a feed inlet 2 at the top and a discharge outlet 7 at the bottom. Several dust suction holes 8 are provided on both sides of the feed inlet 2. Suction boxes 9 are provided on the outside of both sides of the feed inlet 2. Suction fans 5 are provided on both sides of the grinding chamber 1. A dust suction pipe 3 is connected between the suction fans 5 and the suction boxes 9. A filter 4 is provided on the dust suction pipe 3. Support legs 6 are provided at the bottom of the grinding chamber 1. By setting up dust suction holes 8, filters 4 and suction fans 5, the device can absorb dust that escapes outward, effectively reducing dust pollution during the grinding process and strengthening environmental protection.

[0024] Working principle

[0025] During grinding, the filling material is fed into the grinding chamber 1 through the feed inlet 2. Then, under the action of gravity, the filling material falls between the two first crushing rollers 10. The two first crushing rollers 10 are controlled to rotate relative to each other. Under the crushing action of the first crushing rollers 10, the filling material completes the initial crushing. The initially crushed filling material continues to fall. Under the diversion and screening action of the guide screen 12, the small particles of filling material fall to the bottom of the grinding chamber 1, and the larger particles of filling material roll along the guide screen 12 and fall to the second crushing roller 11. The second crushing roller 11 is started to rotate to crush the larger particles of filling material a second time. During this process, the suction fan 5 is started. The dust generated during the crushing process enters the filter 4 through the dust suction hole 8, the suction box 9, and the dust suction pipe 3 in sequence and is absorbed by the filter 4.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A grinding device for mine backfill materials, characterized in that, include: Grinding silo; The secondary crushing mechanism includes a first crushing roller and a second crushing roller. The first crushing roller is arranged in a pair inside the grinding chamber. A guide screen is provided below the first crushing roller. The guide screen is shaped like a herringbone. A pair of second crushing rollers are provided on both sides below the guide screen.

2. The grinding device for mine backfill material according to claim 1, characterized in that: The grinding chamber has a feed inlet at the top and a discharge outlet at the bottom.

3. The grinding device for mine backfill material according to claim 2, characterized in that: Several dust suction holes are provided on both sides of the feed inlet.

4. The grinding device for mine backfill material according to claim 3, characterized in that: The feed inlet is equipped with suction boxes on both sides of its exterior.

5. The grinding device for mine backfill material according to claim 4, characterized in that: The grinding chamber is equipped with suction fans on both sides, and a dust suction pipe is connected between the suction fans and the suction box. The dust suction pipe is equipped with a filter.

6. The grinding device for mine backfill material according to claim 1, characterized in that: The lower part of the grinding chamber is equipped with support legs.

7. The grinding device for mine backfill material according to claim 1, characterized in that: The diameter of the first crushing roller is larger than the diameter of the second crushing roller.

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