A grinding machine for superfine heavy calcium carbonate production

Abstract

A kind of grinder for superfine heavy calcium carbonate production, including ball mill frame, ball mill body, the upper portion of the ball mill frame is fixedly connected with connecting frame, the connecting frame is fixedly connected with annular material guide hopper, the outside of the ball mill body is fixedly connected with sieve, the inside space of the ball mill body, sieve is communicated.The outside of the ball mill body is fixedly connected with annular baffle, the annular baffle is in contact with annular material guide hopper.The material ground in the ball mill body passes through the ball mill body and enters the sieve, and the screened material is discharged into the annular material guide hopper by the sieve, when the sieve is turned to the upper side, the material not screened in the sieve falls back into the ball mill body to continue grinding, and the qualified product is screened out preferentially by the sieve, reducing the grinding burden in the ball mill body and improving the grinding efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of ultrafine heavy calcium carbonate production equipment, and particularly relates to a grinding mill for ultrafine heavy calcium carbonate production. Background Technology

[0002] Ball mills are essential for the production of ultrafine heavy calcium carbonate. A ball mill is a key industrial piece of equipment that utilizes the impact and grinding action of grinding media (such as steel balls, steel segments, and ceramic balls) to achieve fine and ultrafine grinding of materials. It is widely used in mining, building materials, chemical, metallurgical, and power industries, for example, to process lumpy or coarse-grained materials such as ores, cement raw materials, and coal powder into fine powder that meets production requirements. Its core working principle is as follows: a motor drives a rotating cylinder to rotate. The grinding media inside the cylinder rises to a certain height and then falls freely or is thrown down under gravity, impacting and crushing the material inside the cylinder. Simultaneously, the squeezing and grinding action between the media and the material, and between the media and the cylinder wall, further grinds the material. Finally, the qualified fine powder is discharged through a screening device inside the cylinder or by airflow. Depending on the grinding media, discharge method, and application scenario, ball mills can be divided into various types, such as grate type, overflow type, and ball mill, and can adapt to different processes such as dry grinding and wet grinding. It is one of the core pieces of equipment for achieving deep grinding of materials in industrial production.

[0003] Because finished and semi-finished products are continuously mixed together during the operation of a ball mill, the finished product itself does not need to be ground further, but it continuously occupies the grinding space of the semi-finished product, causing unnecessary workload and resulting in the relatively low working efficiency of conventional ball mills.

[0004] To address these issues, we propose a grinding mill for the production of ultrafine heavy calcium carbonate. Utility Model Content

[0005] The purpose of this invention is to solve the problem of low working efficiency of conventional ball mills, and to propose a grinding mill for the production of ultrafine heavy calcium carbonate.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A grinding mill for producing ultrafine heavy calcium carbonate includes a ball mill frame and a ball mill body. A connecting frame is fixedly connected to the upper part of the ball mill frame, and an annular guide hopper is fixedly connected to the connecting frame. A sieve is fixedly connected to the outside of the ball mill body, and the internal spaces of the ball mill body and the sieve are interconnected. When the sieve rotates to the lower side, the material being ground inside the ball mill body passes through the ball mill body and enters the sieve. The sieved material is discharged into the annular guide hopper. When the sieve rotates to the upper side, the material that has not been screened falls back into the ball mill body for further grinding. The sieve prioritizes the screening of qualified products, reducing the grinding load inside the ball mill body and improving grinding efficiency.

[0007] Preferably, an annular baffle is fixedly connected to the outside of the ball mill body, and the annular baffle is in movable contact with the annular guide hopper. The annular baffle blocks the gap between the annular guide hopper and the ball mill body, preventing dust from overflowing from the annular guide hopper and reducing the dust diffusion rate.

[0008] Preferably, the ball mill body includes a main body, the lower end of which is perforated with a slit. The slit allows fine powder to pass through and enter the sieve, blocking the grinding balls.

[0009] Preferably, the sieve includes a shell, a collection hopper is fixedly connected to the lower end of the shell, a collection hopper screen is fixedly connected between the shell and the collection hopper, the upper end of the shell is fixedly connected to the lower end of the machine body, and the gap is located inside the shell. Material leaking through the gap enters the shell, and the screen blocks excessively large particles inside the shell, allowing qualified fine particles to fall into the collection hopper, and then be discharged into the annular guide hopper for easy screening of qualified materials.

[0010] Preferably, the sieve further includes a discharge nozzle, the upper end of which is fixedly connected to the lower end of the collecting hopper, and the internal spaces of the outer shell, the collecting hopper, and the discharge nozzle are interconnected. The discharge nozzle is used to guide powdery materials into the annular guide hopper.

[0011] Preferably, the annular guide hopper includes an annular shell, which is fixedly connected to a connecting frame. A discharge nozzle is fixedly connected to the lower end of the annular shell, and the discharge nozzle is located inside the annular shell. The material discharged from the discharge nozzle enters the annular shell, is guided through the annular shell to the discharge nozzle, and is discharged outward through the discharge nozzle.

[0012] In summary, the technical effects and advantages of this utility model are as follows: 1. When the screen rotates to the lower side, the material being ground inside the ball mill passes through the ball mill body and enters the screen. The screened material is then discharged into the annular guide hopper. When the screen rotates to the upper side, the material that is not screened falls back into the ball mill body for further grinding. The qualified products are screened out first, reducing the grinding burden inside the ball mill body and improving grinding efficiency.

[0013] 2. Use annular baffles to block the gap between the annular guide hopper and the ball mill body to prevent dust from overflowing from the annular guide hopper and reduce the dust diffusion rate.

[0014] 3. Material leaking through the gaps enters the outer shell. Oversized particles are blocked inside the shell by the screen, while qualified particles fall into the collecting hopper and are discharged into the annular guide hopper for easy screening of qualified materials. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the ball mill body structure of this utility model; Figure 3 This is a schematic diagram of the sieve structure of this utility model; Figure 4 This is a schematic diagram of the annular guide hopper structure of this utility model.

[0016] In the diagram: 1. Ball mill frame; 2. Ball mill body; 3. Screen; 4. Annular guide hopper; 5. Annular baffle; 6. Connecting frame; 21. Machine body; 22. Gap; 31. Outer shell; 32. Collection hopper; 33. Discharge nozzle; 41. Annular shell; 42. Discharge nozzle. Detailed Implementation

[0017] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments.

[0018] like Figure 1 As shown, a grinding mill for producing ultrafine heavy calcium carbonate includes a ball mill frame 1 and a ball mill body 2. A connecting frame 6 is fixedly connected to the upper part of the ball mill frame 1, and an annular guide hopper 4 is fixedly connected to the connecting frame 6. A sieve 3 is fixedly connected to the outside of the ball mill body 2, and the internal spaces of the ball mill body 2 and the sieve 3 are interconnected. When the sieve 3 rotates to the lower side, the material being ground inside the ball mill body 2 passes through the ball mill body 2 and enters the sieve 3. The sieved material is discharged into the annular guide hopper 4 through the sieve 3. When the sieve 3 rotates to the upper side, the material that has not been screened falls back into the ball mill body 2 for further grinding. Qualified products are preferentially screened out through the sieve 3, reducing the grinding load inside the ball mill body 2.

[0019] like Figure 1 As shown, an annular baffle 5 is fixedly connected to the outside of the ball mill body 2, and the annular baffle 5 is in movable contact with the annular guide hopper 4. The annular baffle 5 is used to block the gap between the annular guide hopper 4 and the ball mill body 2 to prevent dust from overflowing from the annular guide hopper 4.

[0020] like Figure 1 and 2 As shown, the ball mill body 2 includes a main body 21, and a slit 22 is hollowed out at the lower end of the main body 21. The slit 22 allows fine powder to pass through and enter the sieve 3, blocking the grinding balls.

[0021] like Figure 1 , 2As shown in Figure 3, the sieve 3 includes a housing 31, with a hopper 32 fixedly connected to the lower end of the housing 31. A screen of the hopper 32 is fixedly connected between the housing 31 and the hopper 32. The upper end of the housing 31 is fixedly connected to the lower end of the machine body 21. A gap 22 is located inside the housing 31. Material leaking out of the gap 22 enters the housing 31. Excessively large particles are blocked inside the housing 31 by the screen, while qualified fine particles fall into the hopper 32 and are discharged into the annular guide hopper 4.

[0022] like Figure 1 and 3 As shown, the sieve 3 also includes a discharge nozzle 33, the upper end of which is fixedly connected to the lower end of the collecting hopper 32. The internal spaces of the outer shell 31, the collecting hopper 32, and the discharge nozzle 33 are interconnected. The discharge nozzle 33 is used to guide powdery materials into the annular guide hopper 4.

[0023] like Figure 1 , 3 As shown in Figure 4, the annular guide hopper 4 includes an annular shell 41, which is fixedly connected to the connecting frame 6. A discharge nozzle 42 is fixedly connected to the lower end of the annular shell 41, and a discharge nozzle 33 is located inside the annular shell 41. The material discharged from the discharge nozzle 33 enters the annular shell 41, is guided through the annular shell 41 to the discharge nozzle 42, and is discharged outward through the discharge nozzle 42.

[0024] Working principle: When the sieve 3 rotates to the lower side, the material being ground inside the ball mill body 2 passes through the ball mill body 2 and enters the sieve 3. The sieve 3 then discharges the screened material into the annular guide hopper 4. When the sieve 3 rotates to the upper side, the unscreened material falls back into the ball mill body 2 for further grinding. Qualified products are preferentially screened out through the sieve 3, reducing the grinding load inside the ball mill body 2. Annular baffles 5 are used to prevent dust from overflowing from the annular guide hopper 4 at the gap between it and the ball mill body 2. Material leaking through the gap 22 enters the outer shell 31, where excessively large particles are blocked by the screen, allowing qualified particles to fall into the collecting hopper 32 and then into the annular guide hopper 4.

[0025] The above description is only a preferred embodiment of the utility model, but the protection scope of the utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed by the utility model, based on the technical solution and the utility model concept, should be included within the protection scope of the utility model.

[0026] The description briefly mentions the application direction of the utility model in relation to existing technologies known to those skilled in the art without modification, and combines them with the utility model to form a complete technology; it avoids excessive popularization of technologies known to those skilled in the art, in order to help those skilled in the art quickly understand the main content of the utility model.

Claims

1. A grinding mill for producing ultrafine heavy calcium carbonate, comprising a ball mill frame (1) and a ball mill body (2), characterized in that: A connecting frame (6) is fixedly connected to the upper part of the ball mill frame (1), and an annular guide hopper (4) is fixedly connected to the connecting frame (6). A sieve (3) is fixedly connected to the outside of the ball mill body (2), and the internal spaces of the ball mill body (2) and the sieve (3) are connected.

2. The grinding mill for producing ultrafine heavy calcium carbonate according to claim 1, characterized in that: An annular baffle (5) is fixedly connected to the outside of the ball mill body (2), and the annular baffle (5) is in contact with the annular guide hopper (4).

3. The grinding mill for producing ultrafine heavy calcium carbonate according to claim 1, characterized in that: The ball mill body (2) includes a body body (21), and the lower end of the body body (21) is hollowed out with a slit (22).

4. A grinding mill for producing ultrafine heavy calcium carbonate according to claim 3, characterized in that: The sieve (3) includes a shell (31), the lower end of which is fixedly connected to a hopper (32), and the hopper (32) screen is fixedly connected between the shell (31) and the hopper (32). The upper end of the shell (31) is fixedly connected to the lower end of the machine body (21), and the gap (22) is located inside the shell (31).

5. A grinding mill for producing ultrafine heavy calcium carbonate according to claim 4, characterized in that: The sieve (3) also includes a discharge nozzle (33), the upper end of which is fixedly connected to the lower end of the hopper (32), and the internal spaces of the outer shell (31), the hopper (32), and the discharge nozzle (33) are interconnected.

6. A grinding mill for producing ultrafine heavy calcium carbonate according to claim 5, characterized in that: The annular guide hopper (4) includes an annular shell (41), which is fixedly connected to the connecting frame (6). A discharge nozzle (42) is fixedly connected to the lower end of the annular shell (41), and the discharge nozzle (33) is located inside the annular shell (41).

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