A production ball mill for calcium carbonate
Patent Information
- Application Number
- CN202522160759.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-13
- Publication Date
- 2026-09-04
- Estimated Expiration
- 2035-10-13
AI Technical Summary
[0003]本申请的目的是提供一种碳酸钙用生产球磨机，旨在改善现有技术中球磨机因原料结块、预处理不足导致的研磨效率低、成品细度不均的问题
1、本实用新型中，通过储料罐侧壁的振动马达带动原料振动防堵，配合破碎箱内两个破碎辊的同步反向转动实现预破碎，再经球磨机本体内提升条带动不同直径配比的钢球增强研磨力度，从而达到高效预处理与均匀研磨的效果，解决现有球磨机因原料结块、预处理不足导致的研磨效率低、成品细度不均的问题，通过上述结构提高了碳酸钙生产的连续性与成品质量稳定性。
Smart Images
Figure CN224712175U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of calcium carbonate production technology, and in particular to a ball mill for calcium carbonate production. Background Technology
[0002] In the calcium carbonate processing industry, ball mills are key pulverizing equipment, and their performance directly affects the particle size, purity, and production efficiency of the finished calcium carbonate product. With the increasing demand for calcium carbonate powder materials in industrial sectors, especially in coatings, plastics, and rubber, higher requirements are being placed on the uniformity of calcium carbonate product fineness and the continuity of production. Therefore, developing a high-efficiency and stable ball mill for calcium carbonate production has become an important direction for industry development. In existing technologies, ball mills for calcium carbonate production typically consist of a feeding device, a grinding cylinder, a transmission mechanism, and a discharging device. The technical principle is to utilize the impact, friction, and compression generated by the grinding media within the rotating cylinder to pulverize lumpy or large-particle calcium carbonate raw materials to the desired particle size. The feeding device often employs a simple chute or screw conveyor to directly feed the raw material into the grinding cylinder; the grinding cylinder generally has only a few fixed baffles to assist in driving the movement of the grinding media; the discharging device separates the material from the grinding media through a screen or centrifugal force. However, in existing technologies, calcium carbonate raw materials are prone to absorbing moisture and clumping, often resulting in blockages in the storage device during the feeding process, leading to interruptions in raw material supply. At the same time, the lack of effective pre-crushing treatment means that large pieces of raw material directly enter the grinding cylinder, requiring the grinding media to consume a large amount of energy for coarse crushing. This not only reduces grinding efficiency but also leads to uneven fineness of the finished product due to insufficient grinding, seriously affecting the continuity of calcium carbonate production and the stability of finished product quality. Therefore, a ball mill for calcium carbonate production is proposed to solve the above problems. Utility Model Content
[0003] The purpose of this application is to provide a ball mill for producing calcium carbonate, which aims to improve the problems of low grinding efficiency and uneven fineness of finished products caused by raw material agglomeration and insufficient pretreatment in the prior art.
[0004] This application provides a ball mill for producing calcium carbonate, which adopts the following technical solution: A ball mill for producing calcium carbonate includes a support frame, a ball mill body is provided on the side wall of the support frame, a support frame is fixedly connected to the upper surface of the support frame, a storage tank is fixedly connected to the side wall of the support frame, a pre-crushing and grinding component is provided below the storage tank, and a screening component is provided on the side wall of the ball mill body. The pre-crushing and grinding assembly includes a crushing box and two crushing rollers. The crushing box is located below the storage tank. The side walls of the two crushing rollers are rotatably connected inside the crushing box. A corrugated pipe is fixedly connected to the lower surface of the storage tank. The lower end of the corrugated pipe is fixedly connected to the upper end of the crushing box. Gears are fixedly connected to the side walls of the two crushing rollers and mesh with each other. A motor is fixedly connected to the side wall of the crushing box. The output end of the motor is fixedly connected to the side wall of one of the crushing rollers. Multiple lifting bars are fixedly connected inside the ball mill body. Steel balls are arranged inside the ball mill body.
[0005] By adopting the above technical solution, the materials can be pre-crushed.
[0006] Preferably, the screening assembly includes a screening box and a screen. The screening box is disposed on the side wall of the ball mill body. The discharge end of the ball mill body is fixedly connected to the inside of the screening box. The side wall of the screen is slidably connected to the inside of the screening box. The screen is disposed at an inclination inside the screening box. A discharge hopper is fixedly connected to the bottom of the screening box.
[0007] By adopting the above technical solution, the coarseness and fineness of materials can be separated.
[0008] Preferably, a controller is fixedly connected to the side wall of the support, a vibration motor is fixedly connected to the side wall of the storage tank, a feeder is fixedly connected to the lower surface of the crushing box, the side wall of the feeder is fixedly connected to the inside of the support, and the discharge end of the feeder is fixedly connected to the feed end of the ball mill body.
[0009] By adopting the above technical solution, blockages can be prevented when discharging materials from the storage tank, while also facilitating the quantitative conveying of materials.
[0010] Preferably, a connecting rod is rotatably connected inside the screening box, and multiple eccentric blocks are fixedly connected to the side wall of the connecting rod, with the side wall of the eccentric blocks attached to the bottom of the screen.
[0011] By adopting the above technical solution, vibration of the screen can be achieved.
[0012] Preferably, a second motor is fixedly connected to the side wall of the screening box, and the output end of the second motor is fixedly connected to one end of the connecting rod.
[0013] By adopting the above technical solution, the linkage can be driven.
[0014] Preferably, a spring is fixedly connected inside the screening box, with one end of the spring fixedly connected inside the screening box and the other end of the spring fixedly connected to the lower surface of the screen.
[0015] By adopting the above technical solution, the connection of the screen is achieved. Preferably, a collection box is fixedly connected to the side wall of the screening box, and a drawer is slidably connected inside the collection box.
[0016] By adopting the above technical solution, coarse material can be collected.
[0017] Preferably, the screening box has a material guide port located above the screen, and the collection box has an interface that communicates with the material guide port.
[0018] By adopting the above technical solution, the conveying of coarse materials can be achieved.
[0019] In summary, this application includes at least one of the following beneficial technical effects: 1. In this utility model, the vibrating motor on the side wall of the storage tank drives the raw material to vibrate and prevent blockage. The synchronous reverse rotation of the two crushing rollers in the crushing box achieves pre-crushing. Then, the lifting bar in the ball mill body drives steel balls with different diameter ratios to enhance the grinding force, thereby achieving the effect of efficient pretreatment and uniform grinding. This solves the problems of low grinding efficiency and uneven fineness of finished products caused by raw material agglomeration and insufficient pretreatment in existing ball mills. The above structure improves the continuity of calcium carbonate production and the stability of finished product quality.
[0020] 2. In this utility model, the motor drives the connecting rod and eccentric block to rotate, and the spring drives the screen to vibrate, so that the material that meets the particle size is discharged through the discharge hopper, and the coarse material slides along the screen surface into the drawer of the collection box for secondary processing, thereby achieving the effect of precise screening and closed-loop recycling. This solves the problems of low screening efficiency and inconvenient coarse material recycling in existing ball mills, which leads to raw material waste. The above structure improves the qualification rate of calcium carbonate products and the utilization rate of raw materials. Attached Figure Description
[0021] Figure 1 This is a three-dimensional schematic diagram of a ball mill for producing calcium carbonate according to the present invention. Figure 2 This is a schematic diagram of the structure of a storage tank for a ball mill used in the production of calcium carbonate, as proposed in this utility model. Figure 3 This is a schematic diagram of the internal structure of the ball mill body of a ball mill for producing calcium carbonate, as proposed in this utility model. Figure 4 This is a schematic diagram of the structure of a screening box for a ball mill used in calcium carbonate production, as proposed in this utility model. Figure 5 This is a structural schematic diagram of a side cross-section of a screening box for a ball mill used in calcium carbonate production, as proposed in this utility model. Explanation of reference numerals in the attached drawings: 1. Support frame; 2. Ball mill body; 3. Controller; 4. Storage tank; 5. Support frame; 6. Corrugated pipe; 7. Vibrating motor; 8. Crushing box; 9. Crushing roller; 10. Gear; 11. Motor 1; 12. Feeder; 13. Lifting bar; 14. Steel ball; 15. Screening box; 16. Screen; 17. Collection box; 18. Drawer; 19. Motor 2; 20. Connecting rod; 21. Eccentric block; 22. Spring; 23. Discharge hopper. Detailed Implementation
[0022] The following is in conjunction with the appendix Figure 1 - Appendix Figure 5 This application will be described in further detail below.
[0023] Example 1: A ball mill for producing calcium carbonate, referring to... Figures 1-3 The system includes a support frame 1, with a ball mill body 2 mounted on the side wall of the support frame 1. The ball mill body 2 is model MQG2130, with an inner diameter of 2.1 meters and a length of 3.0 meters. It crushes calcium carbonate through internal grinding media to meet the particle size requirements of different industries. Details are omitted here. A support frame 5 is fixedly connected to the upper surface of the support frame 1, and a storage tank 4 is fixedly connected to the side wall of the support frame 5. The storage tank 4 is used to store the calcium carbonate raw material to be processed, providing a continuous material source for subsequent processing. The support frame 5 is a triangular steel structure design, which uses the stability of a triangle to support and fix the storage tank 4. A pre-crushing and grinding component is set below the storage tank 4. The pre-crushing and grinding component is used to pre-crush the raw material before it enters the ball mill body 2, reducing the grinding load of the ball mill body 2 and improving the overall processing efficiency. A screening component is set on the side wall of the ball mill body 2. The screening component is used to classify and screen the ground material, separating the finished product that meets the particle size requirements and the coarse material that needs to be ground again. The pre-crushing and grinding assembly includes a crushing box 8 and two crushing rollers 9. The crushing box 8 is located below the storage tank 4. The side walls of the two crushing rollers 9 are rotatably connected inside the crushing box 8. The two crushing rollers 9 work together to rotate relative to each other, crushing the raw material through compression and shearing to achieve the effect of crushing large pieces of raw material to a suitable particle size. A bellows 6 is fixedly connected to the lower surface of the storage tank 4. The bellows 6 is made of elastic rubber and serves to buffer the vibration of the storage tank 4 transmitted to the crushing box 8, while also accommodating the relative displacement between the storage tank 4 and the crushing box 8. The lower end of the bellows 6 is fixedly connected to the upper end of the crushing box 8. Gears 10 are fixedly connected to the side walls of the two crushing rollers 9. The two gears 10 mesh with each other to transmit power. A motor 11 is fixedly connected to the side wall of the crushing box 8. The motor 11 is model Y132M-4 with a power of 7. A 0.5kW motor 11 provides driving force to rotate the crushing roller 9. The output of motor 11 is fixedly connected to the side wall of one of the crushing rollers 9. Multiple lifting bars 13 are fixedly connected inside the ball mill body 2. These lifting bars 13 are stepped and used to lift the steel balls 14 and materials when the ball mill body 2 rotates. The stepped structure allows the steel balls 14 and materials to be lifted to different heights before falling, enhancing the impact force and improving grinding efficiency and the uniformity of the finished product's fineness. The ball mill body 2 contains steel balls 14, which are wear-resistant steel balls with different diameter ratios. Large-diameter steel balls 14 mainly perform impact crushing, while small-diameter steel balls 14 mainly perform grinding and refining. The steel balls 14 of different diameters work together to achieve comprehensive grinding of raw materials of different particle sizes. A controller 3 is fixedly connected to the side wall of the support 1. The controller 3 is a Siemens S7-200SMART series PLC, which is used to control the operating parameters of various components of the equipment and realize the automated collaborative work of the equipment. A vibration motor 7, model ZFB-100, is fixedly connected to the side wall of the storage tank 4. It is used to generate vibration to prevent the calcium carbonate raw material in the storage tank 4 from clumping or bridging and blockage, and to ensure that the raw material can fall smoothly. It will not be described in detail here. A feeder 12, model GZG4030, is fixedly connected to the lower surface of the crushing box 8. It is used to quantitatively and stably transport the crushed raw material to the ball mill body 2, so as to avoid the grinding effect being affected by too much or too little raw material supply. It will not be described in detail here. The feeder 12 is fixedly connected to the side wall of the support 1, and the discharge end of the feeder 12 is fixedly connected to the feed end of the ball mill body 2.
[0024] Example 2: A ball mill for producing calcium carbonate, referring to... Figures 4-5The screening assembly includes a screening box 15 and a screen 16. The screening box 15 is located on the side wall of the ball mill body 2 and is used to house the screen 16, providing a closed space for material screening and preventing dust leakage. The discharge end of the ball mill body 2 is fixedly connected to the inside of the screening box 15, allowing the ground material to directly enter the screening box 15 for screening. The side wall of the screen 16 is slidably connected to the inside of the screening box 15. The mesh size of the screen 16 is designed according to the particle size requirements of the finished calcium carbonate product, and its surface is polished to reduce material residue. Adhesion is used to separate materials of different particle sizes. Fine materials that meet the requirements fall through the mesh, while coarse materials remain on the screen 16. The screen 16 is set at an inclination inside the screening box 15 with an inclination angle of 15°-20°. With the help of vibration, the coarse materials can slide along the screen surface to the collection area, achieving the effect of automatic conveying of coarse materials. The bottom of the screening box 15 is fixedly connected to the discharge hopper 23, which is used to collect the fine materials that pass through the screen 16 and guide them to the subsequent process to ensure smooth material conveying. Inside the screening box 15, a connecting rod 20 is rotatably connected. Multiple eccentric blocks 21 are fixedly connected to the side wall of the connecting rod 20. The center of gravity of the eccentric blocks 21 is offset from the axis of the connecting rod 20. When the connecting rod 20 rotates, it generates centrifugal force, which drives the screen 16 to vibrate, achieving a high-efficiency screening effect. The side wall of the eccentric blocks 21 is attached to the bottom of the screen 16. A second motor 19 is fixedly connected to the side wall of the screening box 15. The second motor 19 is model Y90S-4 with a power of 1.1kW. Its output end is fixedly connected to one end of the connecting rod 20 to provide power for the rotation of the connecting rod 20 and the eccentric blocks 21. The vibration frequency of the screen 16 can be adjusted by controlling its rotation speed. Further details are omitted here. A spring 22 is fixedly connected inside the screening box 15. One end of the spring 22 is fixedly connected inside the screening box 15, and the other end of the spring 22 is fixedly connected to the lower surface of the screen 16. It is used to support the screen 16 and to buffer and reset when the screen 16 vibrates, so as to ensure the vibration of the screen 16 is stable and reduce the impact of vibration on the screening box 15. A collection box 17 is fixedly connected to the side wall of the screening box 15. The collection box 17 is used to temporarily store coarse material that has not passed through the screen 16 to prevent the coarse material from scattering. A drawer 18 is slidably connected inside the collection box 17. The front end of the drawer 18 is provided with a handle, which makes it easy for the operator to pull out and clean it or to recycle the coarse material to the storage tank 4 for secondary grinding, so as to realize the recycling of materials. A guide port is opened inside the screening box 15, which is located above the screen 16. An interface is opened inside the collection box 17, which communicates with the guide port, to guide the coarse material on the screen 16 into the drawer 18 of the collection box 17, ensuring that the coarse material collection path is unobstructed.
[0025] Working principle: When using this equipment, the calcium carbonate raw material to be processed is first put into the storage tank 4. The vibration motor 7 on the side wall of the storage tank 4 is started. The high-frequency vibration prevents the raw material from clumping or bridging in the tank. Under the action of gravity, the raw material passes through the corrugated pipe 6 on the lower surface of the storage tank 4. The corrugated pipe 6 can buffer the vibration and adapt to the material flow, and is conveyed to the crushing box 8 below. The pre-crushing and grinding components inside the crushing box 8 begin to work. Motor 11 drives one of the crushing rollers 9 to rotate. Since the gears 10 on the side walls of the two crushing rollers 9 mesh with each other, the two crushing rollers 9 rotate synchronously in opposite directions, which squeezes and shears the raw material entering the crushing box 8 to pre-crush it, crushing large pieces of calcium carbonate to a particle size suitable for ball mill grinding. The crushed material falls into the feeder 12 below the crushing box 8. The feeder 12 delivers the material quantitatively and stably to the feed end of the ball mill body 2. After the material enters the ball mill body 2, during its rotation, the steel balls 14 inside rotate with the cylinder and fall down, further crushing the material through impact and grinding. At the same time, multiple lifting bars 13 distributed in a ring inside the ball mill body 2 rotate with the cylinder, lifting the steel balls 14 and the material to a certain height before falling down, enhancing the impact force of the steel balls 14 on the material, improving grinding efficiency and the uniformity of the fineness of the finished product. Throughout the process, the controller 3 can coordinate the operating parameters of each component. The ground material enters the screening box 15 from the discharge end of the ball mill body 2. The motor 219 drives the connecting rod 20 to rotate, and the eccentric block 21 on the connecting rod 20 rotates accordingly, continuously impacting the bottom of the screen 16. Combined with the elastic force of the spring 22 on the lower surface of the screen 16, the screen 16 vibrates. The material that meets the particle size requirements falls through the inclined screen 16 and is discharged through the discharge hopper 23 at the bottom of the screening box 15, entering the subsequent process. The coarse material that does not meet the standard slides along the screen surface to the guide port on the side wall of the screening box 15 under the vibration of the screen 16, and enters the drawer 18 in the collection box 17 through the interface. The drawer 18 can be removed, and the coarse material is poured back into the storage tank 4 for secondary processing, forming a closed loop.
Claims
1. A ball mill for producing calcium carbonate, comprising a support (1), characterized in that: The support (1) is provided with a ball mill body (2) on its side wall, a support frame (5) is fixedly connected to the upper surface of the support (1), a storage tank (4) is fixedly connected to the side wall of the support frame (5), a pre-crushing and grinding component is provided below the storage tank (4), and a screening component is provided on the side wall of the ball mill body (2). The pre-crushing and grinding assembly includes a crushing box (8) and two crushing rollers (9). The crushing box (8) is located below the storage tank (4). The side walls of the two crushing rollers (9) are rotatably connected inside the crushing box (8). A corrugated pipe (6) is fixedly connected to the lower surface of the storage tank (4). The lower end of the corrugated pipe (6) is fixedly connected to the upper end of the crushing box (8). Gears (10) are fixedly connected to the side walls of the two crushing rollers (9). The two gears (10) mesh with each other. A motor (11) is fixedly connected to the side wall of the crushing box (8). The output end of the motor (11) is fixedly connected to the side wall of one of the crushing rollers (9). Multiple lifting bars (13) are fixedly connected inside the ball mill body (2). Steel balls (14) are provided inside the ball mill body (2).
2. The ball mill for producing calcium carbonate according to claim 1, characterized in that: The screening assembly includes a screening box (15) and a screen (16). The screening box (15) is disposed on the side wall of the ball mill body (2). The discharge end of the ball mill body (2) is fixedly connected to the inside of the screening box (15). The side wall of the screen (16) is slidably connected to the inside of the screening box (15). The screen (16) is disposed in an inclined manner inside the screening box (15). The bottom of the screening box (15) is fixedly connected to a discharge hopper (23).
3. The ball mill for producing calcium carbonate according to claim 1, characterized in that: A controller (3) is fixedly connected to the side wall of the support (1), a vibration motor (7) is fixedly connected to the side wall of the storage tank (4), a feeder (12) is fixedly connected to the lower surface of the crushing box (8), the side wall of the feeder (12) is fixedly connected to the inside of the support (1), and the discharge end of the feeder (12) is fixedly connected to the feed end of the ball mill body (2).
4. A ball mill for producing calcium carbonate according to claim 2, characterized in that: The screening box (15) is rotatably connected to a connecting rod (20), and a plurality of eccentric blocks (21) are fixedly connected to the side wall of the connecting rod (20). The side wall of the eccentric blocks (21) is attached to the bottom of the screen (16).
5. A ball mill for producing calcium carbonate according to claim 4, characterized in that: The screening box (15) is fixedly connected to a second motor (19) on its side wall, and the output end of the second motor (19) is fixedly connected to one end of the connecting rod (20).
6. A ball mill for producing calcium carbonate according to claim 5, characterized in that: A spring (22) is fixedly connected inside the screening box (15). One end of the spring (22) is fixedly connected inside the screening box (15), and the other end of the spring (22) is fixedly connected to the lower surface of the screen (16).
7. A ball mill for producing calcium carbonate according to claim 2, characterized in that: The screening box (15) is fixedly connected to the side wall of the collection box (17), and the collection box (17) is slidably connected to the drawer (18).
8. A ball mill for producing calcium carbonate according to claim 7, characterized in that: The screening box (15) has a material guide port inside, which is located above the screen (16). The collection box (17) has an interface inside, which is connected to the material guide port.