Feeding device of ore grinding ball mill

Abstract

The utility model relates to a feeding device of an ore grinding ball mill in the technical field of ore grinding equipment, which comprises a turntable, the turntable is matched with a feeding hopper of the ball mill, a blanking hopper is arranged above the turntable, the bottom of the turntable is connected with a stepping motor through a rotating shaft, and the feeding hopper is positioned on one side of the turntable and is matched with a scraping plate I; a material receiving disc is arranged below the rotary disc, a circle of enclosure is fixed to the outer edge of the material receiving disc, a discharging port is formed in the position, corresponding to the enclosure, of the feeding hopper, the upper surface, at the discharging port, of the material receiving disc is an inclined plane, the lowest end of the inclined plane is located above the feeding hopper, and the first scraping plate is arranged at the discharging port. The feeding device is simple in structure, small in equipment abrasion and low in maintenance and replacement cost, scattering of materials is avoided, and the feeding efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of grinding equipment, specifically relating to a feeding device for a grinding ball mill. Background Technology

[0002] In the grinding process of APT smelting, ore needs to be fed into a ball mill and ground into a slurry with water. In existing technology, a screw feeder is used to transport the ore discharged from the hopper into the ball mill for grinding. However, over long-term use, the ore causes significant wear on the screw feeder's shaft and blades, requiring timely replacement. The shafts and blades of four screw feeders need to be replaced 17-18 times a year, resulting in high costs and reduced production efficiency. Therefore, a new feeding device for the ball mill is needed to solve these technical problems. Utility Model Content

[0003] To address the aforementioned deficiencies in existing technologies, this utility model provides a feeding device for a grinding ball mill, including a turntable that cooperates with the ball mill's feed hopper. A discharge hopper is located above the turntable and connected to a discharge pipe. A vertical rotating shaft is fixedly connected to the center of the bottom of the turntable, and a stepper motor is connected to the rotating shaft. The feed hopper is located on one side of the turntable and is equipped with a scraper. A receiving plate is located below the turntable, and a ring of baffles is fixed around its outer edge. The top of the baffles is higher than the upper surface of the turntable. A discharge port is located at the baffle corresponding to the feed hopper. The upper surface of the receiving plate at the discharge port is inclined, with the lowest point of the inclined surface located above the feed hopper. The scraper is positioned at the discharge port. The baffles prevent ore from falling to the ground under centrifugal force during turntable rotation, thus avoiding impacting the production environment. The inclined surface allows falling ore to smoothly enter the feed hopper.

[0004] Preferably, the receiving tray is provided with a second scraper, one end of which is fixedly connected to the rotating shaft. As the rotating shaft rotates, the second scraper scrapes the ore falling on the receiving tray together and moves with the scraper. When it moves to the inclined surface on the receiving tray, it slides down the inclined surface into the feed hopper.

[0005] Preferably, one end of the scraper blade is connected to a column, and the other end of the scraper blade extends from the discharge port to the turntable. A movable ring is fitted on the column, and the scraper blade is fixedly connected to the movable ring. The movable ring is detachably fixed to the column by locking bolts. The tilt angle of the scraper blade can be adjusted reasonably as needed to efficiently scrape the ore on the turntable, allowing the ore to fall more smoothly into the feed hopper.

[0006] Preferably, a material distribution block is provided below the discharge pipe. The cross-section of the material distribution block is an isosceles triangle, and the material distribution block is connected to the discharge pipe via a connecting rod. The material distribution block can buffer and distribute the ore discharged from the discharge pipe, reducing the impact force on the turntable and improving the uniformity of the ore falling on the turntable.

[0007] Preferably, the connecting rod is a vertical telescopic rod, with its fixed end fixedly connected to the outer wall of the discharge pipe and its telescopic end fixedly connected to the fabric block. The height of the fabric block is adjusted by extending and retracting the vertical telescopic rod, resulting in a more even distribution of the ore onto the turntable.

[0008] Preferably, the vertical telescopic rod is an electric push rod or a hydraulic rod.

[0009] This invention also includes other components that enable the feeding device of a grinding ball mill to function properly, such as control components for stepper motors, electric push rods, and hydraulic cylinders, all of which are conventional technologies in the field. Furthermore, devices or components not limited in this invention, such as electrically operated valves, all employ conventional technologies and equipment in the field.

[0010] Working principle: The ore discharged from the discharge pipe falls onto the turntable. With the rotation of the turntable and the cooperation of scraper plate one, the ore falls from the discharge port into the feed hopper. Due to the centrifugal force during the rotation of the turntable, some ore is easy to spill off the turntable. The spilled ore falls onto the receiving plate and enters the feed hopper from the discharge port under the action of scraper plate two. This avoids the spillage of ore when feeding the ball mill and improves the feeding efficiency. After the equipment wears out, only the scraper plate needs to be replaced.

[0011] The advantages of this invention are: simple structure, low equipment wear, low maintenance and replacement costs, prevention of material spillage, and improved feeding efficiency. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 This is a schematic diagram of the feeding device of a grinding ball mill in Embodiment 1 of this utility model;

[0014] Figure 2 for Figure 1 Top view of the turntable;

[0015] Figure 3 This is a schematic diagram of the feeding device of a grinding ball mill in Embodiment 2 of this utility model.

[0016] In the diagram: 1. Feed hopper; 2. Discharge pipe; 3. Turntable; 4. Receiving tray; 5. Stepper motor; 6. Scraper blade II; 7. Enclosure; 8. Inclined surface; 9. Scraper blade I; 10. Column; 11. Feed hopper; 12. Ball mill; 13. Locking bolt; 14. Fabric block; 15. Vertical telescopic rod. Detailed Implementation

[0017] The present invention will now be clearly described with reference to the accompanying drawings and specific embodiments. This description is merely for explaining the present invention and is not intended to limit it. Any modifications, equivalent substitutions, improvements, etc., made by those skilled in the art based on the embodiments of the present invention without inventive effort to obtain all other embodiments should be included within the protection scope of the present invention.

[0018] Example 1

[0019] like Figure 1-2 As shown, this utility model provides a feeding device for a grinding ball mill, including a turntable, which cooperates with the feed hopper of the ball mill. A discharge hopper is provided above the turntable, and the discharge hopper is connected to a discharge pipe. The discharge pipe 2 of the discharge hopper 1 is located above the center of the turntable, and an electric switch valve can be installed on the discharge pipe 2. A vertical rotating shaft is fixedly connected to the bottom center of the turntable 3, and a stepper motor 5 is connected to the rotating shaft. The feed hopper 11 is located on one side of the turntable 3 and is equipped with a scraper 9. A receiving plate 4 is provided below the turntable 3. The receiving plate is fixed by a bracket, and the rotating shaft passes through the center of the receiving plate and is rotatably connected to the receiving plate through a bearing. A ring of baffles 7 is fixed to the outer edge of the receiving tray 4. The top of the baffles 7 is higher than the upper surface of the turntable 3. A discharge port is provided at the baffles 7 corresponding to the feed hopper 11. The upper surface of the receiving tray 4 at the discharge port is an inclined surface 8. The lowest point of the inclined surface 8 is located above the feed hopper 11. The scraper 9 is set at the discharge port. The baffles 7 can prevent the ore flying off under the centrifugal force when the turntable 3 rotates from falling to the ground and affecting the production working environment. The inclined surface 8 can make the falling ore enter the feed hopper 11 smoothly.

[0020] The receiving tray 4 is equipped with a scraper plate 2 6, one end of which is fixedly connected to the rotating shaft. As the rotating shaft rotates, the scraper plate 2 6 scrapes the ore falling on the receiving tray 4 together and moves with the scraper plate 2 6. When it moves to the inclined surface 8 on the receiving tray 4, it slides down from the inclined surface 8 into the feed hopper 11.

[0021] One end of the scraper blade 9 is connected to a column 10, and the other end extends from the discharge port to the turntable 3. A movable ring is fitted on the column 10, and the scraper blade 9 is fixedly connected to the movable ring. The movable ring is detachably fixed to the column 10 by a locking bolt 13. The tilt angle of the scraper blade 9 can be adjusted as needed to efficiently scrape the ore on the turntable 3, allowing the ore to fall more smoothly into the feed hopper 11. Tightening the locking bolt fixes the movable ring to the column, while loosening the locking bolt allows the movable ring to move up and down along the column or rotate around the column, thereby adjusting the tilt angle of the scraper blade and its contact with the turntable, further improving the scraping effect. The feed rate can be controlled by adjusting the gap between the scraper blade and the turntable, or by changing the turntable speed or the discharge position.

[0022] The ore discharged from the discharge pipe 2 falls onto the turntable 3. As the turntable 3 rotates and the scraper 9 cooperates, the ore falls from the discharge port into the feed hopper 11. Due to the centrifugal force during the rotation of the turntable 3, some ore is easily spilled from the turntable 3. The spilled ore falls onto the receiving plate 4 and enters the feed hopper 11 from the discharge port under the action of the scraper 6. This avoids the spillage of ore when feeding the ball mill and improves the feeding efficiency. After the equipment is worn out, only the scraper needs to be replaced.

[0023] In this embodiment, the equipment experienced no major wear and tear or required replacement or maintenance during its one-year use. Compared to the original four screw feeders whose shafts and feeding blades needed to be replaced 17-18 times a year, this effectively reduced costs and improved production efficiency.

[0024] Example 2

[0025] like Figure 3 As shown, the difference between this embodiment and Embodiment 1 is that a material distribution block 14 is provided below the discharge pipe 2. The cross-section of the material distribution block 14 is an isosceles triangle, and the material distribution block 14 is connected to the discharge pipe 2 via a connecting rod. The material distribution block 14 can buffer and distribute the ore discharged from the discharge pipe 2, reducing the impact force on the turntable 3 and improving the uniformity of the ore falling on the turntable 3.

[0026] The connecting rod is a vertical telescopic rod 15. The fixed end of the vertical telescopic rod 15 is fixedly connected to the outer wall of the discharge pipe 2, and the telescopic end of the vertical telescopic rod 15 is fixedly connected to the cloth block 14. The height of the cloth block 14 is adjusted by extending and retracting the vertical telescopic rod 15, so that the ore sprinkled on the turntable 3 is more even.

[0027] The vertical telescopic rod 15 is an electric push rod or a hydraulic rod.

[0028] The stepper motor, electric push rod, hydraulic rod, electric switch valve, etc. in the above embodiments are all existing technologies. This application does not make any improvements to them, but only utilizes their existing functions. For their specific structure and principle, please refer to the product manual or existing technical information, which are all existing technologies.

[0029] The embodiments of this utility model have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A feeding device of a ball mill, comprising a rotating disc matched with a feeding hopper of the ball mill, a lower hopper is arranged above the rotating disc, and a discharging pipe is connected to the lower hopper, characterized in that: The bottom center of the rotating disc is fixedly connected with a vertical rotating shaft, the rotating shaft is connected with a stepping motor, the feeding hopper is located on one side of the rotating disc and is matched with a scraping plate one, a receiving disc is arranged below the rotating disc, a surrounding fence is fixedly arranged on the outer edge of the receiving disc, the top of the surrounding fence is higher than the upper surface of the rotating disc, a discharge port is arranged on the corresponding surrounding fence of the feeding hopper, the upper surface of the receiving disc at the discharge port is a slope, the lowest end of the slope is located above the feeding hopper, and the scraping plate one is arranged at the discharge port.

2. A feed arrangement for a grinding mill according to claim 1, characterised in that: A scraping plate two is arranged in the receiving disc, and one end of the scraping plate two is fixedly connected with the rotating shaft.

3. A feed arrangement for a grinding mill according to claim 1, characterised in that: One end of the scraping plate one is connected with a stand, the other end of the scraping plate one extends to the rotating disc from the discharge port, a moving ring is sleeved on the stand, the scraping plate one is fixedly connected with the moving ring, and the moving ring is detachably fixed on the stand through locking bolts.

4. A feed arrangement for a grinding mill according to claim 1, characterised in that: A material distributing block is arranged below the discharge pipe, the cross section of the material distributing block is isosceles triangle, and the material distributing block is connected with the discharge pipe through a connecting rod.

5. A feed arrangement for a grinding mill according to claim 4, characterised in that: The connecting rod is a vertical telescopic rod, the fixed end of the vertical telescopic rod is fixedly connected with the outer wall of the discharge pipe, and the telescopic end of the vertical telescopic rod is fixedly connected with the material distributing block.

6. A feed arrangement for a grinding mill according to claim 5, characterised in that: The vertical telescopic rod is an electric push rod or a hydraulic rod.

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