Calcium carbonate grinding machine with scattering structure

Abstract

The utility model discloses a calcium carbonate grinder with a scattering structure, which belongs to the technical field of calcium carbonate grinding and comprises a base, a grinding box is arranged on the base, a transmission arm is mounted on the base, a grinding roller is arranged on the transmission arm and positioned in the grinding box, and a grinding disc is arranged in the grinding box. Through the arranged scattering and feeding structure, a scattering motor can be started in the feeding process, the scattering motor drives a scattering cutter to rotate through a rotating shaft, so that fed calcium carbonate is scattered, the calcium carbonate is dispersed into primary particles, soft buffering in the grinding process is reduced, the particles are more fully exposed between a grinding roller and a grinding disc, and the grinding quality of the calcium carbonate is improved. The effective collision frequency in unit time is increased, the grinding efficiency is improved, the supporting assembly is arranged at the tail end of the rotating shaft, the rotating shaft can be supported, the stability of the rotating shaft is guaranteed, the spring is arranged in the fixing rod and used in cooperation with the abutting rod, the abutting rod can effectively make contact with the inner wall of the circular channel, and the supporting effect is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of calcium carbonate grinding technology, and in particular to a calcium carbonate grinding machine with a dispersing structure. Background Technology

[0002] Ultrafine heavy calcium carbonate is a powder material produced by mechanically grinding natural calcium carbonate minerals (such as calcite, marble, limestone, etc.) to micron or even submicron particle sizes. It features high whiteness, good dispersibility, chemical stability, and low oil absorption. Vertical mills are typically used to grind the calcium carbonate during the processing of ultrafine heavy calcium carbonate, and the resulting product is the desired ultrafine heavy calcium carbonate.

[0003] In operation, vertical mills feed material into the grinding chamber through the feed hopper. After the motor is started, the grinding disc rotates in conjunction with the grinding rollers for grinding. Driven by a high-speed airflow, the ground product is discharged after powder selection. However, in existing vertical mills, calcium carbonate powder is prone to agglomeration during storage or transportation due to static electricity, moisture, and other factors. Because vertical mills lack a dispersing structure at the feed hopper, directly feeding agglomerated calcium carbonate will affect the grinding effect. The agglomerates will create a soft core buffer during grinding, reducing the number of particle collisions per unit time, thus lowering grinding efficiency and requiring a longer grinding time to achieve the desired effect, increasing grinding costs. Utility Model Content

[0004] The main objective of this invention is to provide a calcium carbonate grinding machine with a dispersing structure, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A calcium carbonate grinding mill with a dispersing structure includes a base, a grinding box on the base, a transmission arm mounted on the base, a grinding roller on the transmission arm located inside the grinding box, a grinding disc inside the grinding box, a sorting box at the upper end of the grinding box, a sorter inside the sorting box, a discharge hood at the upper end of the sorting box, a feed hopper on the grinding box, and a dispersing feed structure mounted on the feed hopper.

[0007] Preferably, the dispersing and feeding structure includes a discharge pipe, a circular channel, and a feeding pipe. The circular channel is opened on the discharge pipe, and a connecting flange is fixed on the discharge pipe. The discharge pipe is fixed to the feeding hopper through the connecting flange. The end of the discharge pipe is located inside the feeding hopper. The feeding pipe is fixed on the discharge pipe and is connected to the circular channel.

[0008] Preferably, the dispersing feeding structure further includes a dispersing motor, a rotating shaft, a dispersing blade, and a support assembly. The dispersing motor is fixed to the end of the discharge pipe, the rotating shaft is fixedly connected to the dispersing blade and is mounted on the dispersing motor, and the support assembly is located at the end of the rotating shaft and abuts against the inner wall of the circular channel.

[0009] Preferably, the support assembly includes a connecting block, a fixed rod, a movable cavity, a spring, and a retaining rod. The fixed rods are arranged in a circular array on the connecting block, and the connecting block is fixed to the lower end of the rotating shaft. The movable cavity is opened on the fixed rod, the spring is installed in the movable cavity on the fixed rod, and the retaining rod is installed in the movable cavity on the fixed rod and connected to the spring.

[0010] Preferably, a speed reducer is provided at the lower end of the grinding box, and a drive motor is installed on the speed reducer. A hydraulic cylinder is installed on the base, and the end of the hydraulic cylinder is connected to the transmission arm.

[0011] Preferably, the top of the discharge hood is provided with a sorting motor, and the motor shaft of the sorting motor is connected to the sorter, and a discharge hopper is installed on the discharge hood.

[0012] Preferably, the grinding box is provided with an air inlet, the grinding disc is connected to the reducer, and the grinding rollers are symmetrically arranged inside the grinding box.

[0013] Compared with the prior art, this utility model has the following beneficial effects: This calcium carbonate grinding machine with a dispersing structure, through the set dispersing feeding structure, has a discharge pipe with a feeding pipe installed at the feeding hopper, and a dispersing motor set at the end of the discharge pipe. It works with the rotating shaft and dispersing blade. The dispersing motor can be started during the feeding process. The dispersing motor drives the dispersing blade to rotate through the rotating shaft, thereby dispersing the fed calcium carbonate into primary particles, reducing the soft buffer during the grinding process, and allowing the particles to be more fully exposed between the grinding roller and the grinding disc, increasing the effective number of collisions per unit time and improving the grinding efficiency. A support component is set at the end of the rotating shaft to support the rotating shaft and ensure its stability. A spring is set inside the fixing rod, which works with the abutment rod to allow the abutment rod to effectively contact the inner wall of the circular channel, ensuring the support effect without affecting the rotation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0016] Figure 3 This is a schematic diagram of the material dispersing and feeding structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the support component of this utility model.

[0018] In the diagram: 1. Base; 2. Grinding box; 3. Transmission arm; 4. Grinding roller; 5. Sorting box; 6. Sorter; 7. Discharge hood; 8. Feed hopper; 9. Dispersion feeding structure; 901. Drop pipe; 902. Circular channel; 903. Feed pipe; 904. Dispersion motor; 905. Rotating shaft; 906. Dispersion blade; 907. Support assembly; 9071. Connecting block; 9072. Fixing rod; 9073. Movable cavity; 9074. Spring; 9075. Abutment rod; 10. Discharge hopper; 11. Drive motor; 12. Hydraulic cylinder; 13. Air inlet; 14. Sorting motor; 15. Reducer; 16. Grinding disc. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] like Figures 1-4 As shown, a calcium carbonate grinding machine with a dispersing structure includes a base 1, a grinding box 2 on the base 1, a transmission arm 3 on the base 1, a grinding roller 4 on the transmission arm 3, the grinding roller 4 being located inside the grinding box 2, a grinding disc 16 inside the grinding box 2, a sorting box 5 at the upper end of the grinding box 2, a sorter 6 inside the sorting box 5, a discharge hood 7 at the upper end of the sorting box 5, a feed hopper 8 on the grinding box 2, and a dispersing feed structure 9 installed on the feed hopper 8.

[0021] A reducer 15 is installed at the lower end of the grinding box 2, and a drive motor 11 is mounted on the reducer 15. A hydraulic cylinder 12 is mounted on the base 1, and the end of the hydraulic cylinder 12 is connected to the transmission arm 3. A sorting motor 14 is installed at the top of the discharge hood 7, and the motor shaft of the sorting motor 14 is connected to the sorter 6. A discharge hopper 10 is installed on the discharge hood 7. An air inlet 13 is provided on the grinding box 2, the grinding disc 16 is connected to the reducer 15, and the grinding rollers 4 are symmetrically arranged inside the grinding box 2.

[0022] When using a vertical grinding mill to grind calcium carbonate, the mill is stably set up on the base 1, and after connecting the relevant pipes and cables, the processing begins. Calcium carbonate is fed into the grinding chamber 2 through the dispersing feeding structure 9 at the feed hopper 8. During this process, the dispersing feeding structure 9 disperses the calcium carbonate into primary particles. At the same time, the drive motor 11 drives the grinding disc 16 to rotate through the reducer 15. The grinding disc 16 rotates with the calcium carbonate particles, working in conjunction with the grinding roller 4 to perform the grinding operation, grinding the calcium carbonate into a finer powder.

[0023] During the grinding process, hot air is blown into the grinding chamber 2 through the air inlet 13. Under the action of the hot air, the calcium carbonate powder dries and flows upward with the hot air. When it flows into the sorting chamber 5, the sorting motor 14 on the discharge hood 7 rotates, causing the sorter 6 to rotate, thereby using centrifugal force to sort the calcium carbonate powder. Fine particles are blown out of the discharge hopper 10 along with the high-speed airflow, while larger particles fall onto the grinding disc 16 by gravity to continue grinding. When needed, the hydraulic cylinder 12 can be activated to adjust the transmission arm 3, thereby adjusting the position of the grinding roller 4, changing the gap between the grinding roller 4 and the grinding disc 16, and thus adjusting the grinding force.

[0024] According to the above implementation scheme, the dispersing and feeding structure 9 includes a discharge pipe 901, a circular channel 902, and a feed pipe 903. The circular channel 902 is formed on the discharge pipe 901, and a connecting flange is fixed on the discharge pipe 901. The discharge pipe 901 is fixed to the feed hopper 8 through the connecting flange, and the end of the discharge pipe 901 is located inside the feed hopper 8. The feed pipe 903 is fixed on the discharge pipe 901 and is connected to the circular channel 902. The dispersing and feeding structure 9 also includes a dispersing motor 904, a rotating shaft 905, a dispersing blade 906, and a support assembly 907. The dispersing motor 904 is fixed to the end of the discharge pipe 901. The rotating shaft 905 is fixedly connected to the dispersing blade 906 and is mounted on the dispersing motor 904. The support assembly 907 is located at the end of the rotating shaft 905 and abuts against the inner wall of the circular channel 902.

[0025] During the dispersing and feeding process, calcium carbonate is fed through the feed pipe 903. The calcium carbonate agglomerates enter the circular channel 902 on the discharge pipe 901 through the feed pipe 903. At the same time, the dispersing motor 904 drives the rotating shaft 905 and the dispersing blade 906 to rotate. The dispersing blade 906 disperses the calcium carbonate agglomerates into primary particles, which then enter the grinding chamber 2 for grinding. When using the dispersing and feeding structure 9, as the rotating shaft 905 rotates with the dispersing blade 906, the support component 907 at the end of the rotating shaft 905 rotates along with it and provides support, ensuring the smooth rotation of the rotating shaft 905, preventing vibration, and ensuring operational stability.

[0026] The support assembly 907 includes a connecting block 9071, a fixed rod 9072, a movable cavity 9073, a spring 9074, and an abutment rod 9075. The fixed rods 9072 are arranged in a ring array on the connecting block 9071, and the connecting block 9071 is fixed to the lower end of the rotating shaft 905. The movable cavity 9073 is opened on the fixed rod 9072. The spring 9074 is installed in the movable cavity 9073 on the fixed rod 9072. The abutment rod 9075 is installed in the movable cavity 9073 on the fixed rod 9072, and the abutment rod 9075 is connected to the spring 9074.

[0027] During the use of the support assembly 907, the connecting block 9071 rotates together with the rotating shaft 905, and the fixed rod 9072 rotates with the connecting block 9071. Under the action of the spring 9074 in the movable cavity 9073, the end of the abutment rod 9075 contacts the inner wall of the circular channel 902, thereby providing support. At the same time, during the rotation, due to the elasticity of the spring 9074, the abutment rod 9075 and the inner wall of the circular channel 902 are in elastic contact, which does not affect the normal rotation of the rotating shaft 905 and ensures the use effect.

[0028] It should be noted that, through the set dispersing feeding structure 9, a discharge pipe 901 with a feed pipe 903 is installed at the feed hopper 8. A dispersing motor 904 is set at the end of the discharge pipe 901, which works with the rotating shaft 905 and the dispersing blade 906. The dispersing motor 904 can be started during the feeding process. The dispersing motor 904 drives the dispersing blade 906 to rotate through the rotating shaft 905, thereby dispersing the fed calcium carbonate into primary particles. This reduces the soft buffer during the grinding process and allows the particles to be more fully exposed between the grinding roller 4 and the grinding disc 16, increasing the effective number of collisions per unit time and improving the grinding efficiency. A support component 907 is set at the end of the rotating shaft 905 to support the rotating shaft 905 and ensure its stability. A spring 9074 is set inside the fixing rod 9072, which works with the abutment rod 9075 to ensure that the abutment rod 9075 can effectively contact the inner wall of the circular channel 902, ensuring the support effect without affecting the rotation.

[0029] The foregoing describes the working principle, features, and beneficial effects of this utility model. Those skilled in the art will understand from the foregoing that it does not limit the scope of this utility model. The embodiments and description above illustrate the basic principles and features of this utility model. Various changes and improvements can be made to this utility model while remaining consistent with its concept, and all such improvements should fall within the scope of protection claimed by this utility model.

Claims

1. A calcium carbonate grinding mill with a dispersing structure, comprising a base (1), a grinding box (2) on the base (1), a transmission arm (3) mounted on the base (1), a grinding roller (4) on the transmission arm (3), the grinding roller (4) being located inside the grinding box (2), a grinding disc (16) inside the grinding box (2), and a sorting box (5) at the upper end of the grinding box (2), a sorter (6) inside the sorting box (5), characterized in that: The sorting box (5) is provided with a discharge cover (7) at the top, the grinding box (2) is provided with a feed hopper (8), and the feed hopper (8) is equipped with a dispersing feed structure (9).

2. A calcium carbonate grinding mill with a dispersing structure according to claim 1, characterized in that: The dispersing and feeding structure (9) includes a discharge pipe (901), a circular channel (902) and a feeding pipe (903). The circular channel (902) is opened on the discharge pipe (901), and a connecting flange is fixed on the discharge pipe (901). The discharge pipe (901) is fixed on the feeding hopper (8) through the connecting flange. The end of the discharge pipe (901) is located inside the feeding hopper (8). The feeding pipe (903) is fixed on the discharge pipe (901), and the feeding pipe (903) is connected to the circular channel (902).

3. A calcium carbonate grinding mill with a dispersing structure according to claim 2, characterized in that: The dispersing feeding structure (9) also includes a dispersing motor (904), a rotating shaft (905), a dispersing blade (906), and a support assembly (907). The dispersing motor (904) is fixed at the end of the discharge pipe (901). The rotating shaft (905) is fixedly connected to the dispersing blade (906) and the rotating shaft (905) is mounted on the dispersing motor (904). The support assembly (907) is located at the end of the rotating shaft (905) and abuts against the inner wall of the circular channel (902).

4. A calcium carbonate grinding mill with a dispersing structure according to claim 3, characterized in that: The support assembly (907) includes a connecting block (9071), a fixed rod (9072), a movable cavity (9073), a spring (9074), and an abutment rod (9075). The fixed rods (9072) are arranged in a ring array on the connecting block (9071), and the connecting block (9071) is fixed to the lower end of the rotating shaft (905). The movable cavity (9073) is opened on the fixed rod (9072). The spring (9074) is installed in the movable cavity (9073) on the fixed rod (9072). The abutment rod (9075) is installed in the movable cavity (9073) on the fixed rod (9072), and the abutment rod (9075) is connected to the spring (9074).

5. A calcium carbonate grinding mill with a dispersing structure according to claim 4, characterized in that: The grinding box (2) is equipped with a speed reducer (15) at its lower end, and a drive motor (11) is installed on the speed reducer (15). A hydraulic cylinder (12) is installed on the base (1), and the end of the hydraulic cylinder (12) is connected to the transmission arm (3).

6. A calcium carbonate grinding mill with a dispersing structure according to claim 5, characterized in that: The top of the discharge hood (7) is provided with a sorting motor (14), and the motor shaft of the sorting motor (14) is connected to the sorter (6). The discharge hood (7) is equipped with a discharge hopper (10).

7. A calcium carbonate grinding mill with a dispersing structure according to claim 6, characterized in that: The grinding box (2) is provided with an air inlet (13), the grinding disc (16) is connected to the reducer (15), and the grinding rollers (4) are symmetrically arranged inside the grinding box (2).

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