Automatic discharging device of ball mill

Abstract

The utility model discloses an automatic blanking device of a ball mill, which comprises a ball mill body, a blanking mechanism, a driving mechanism, a powder box and a recycling box, the blanking mechanism is arranged below the ball mill body, the ball mill body is connected with the blanking mechanism through a corrugated pipe, and the driving mechanism is arranged on the right side of the blanking mechanism. The powder box is arranged below the discharging mechanism, and the recycling box is arranged on the left side of the discharging mechanism. An ash stirring plate is arranged on the inner side of a shell of the ball mill body; a material stirring mechanism is arranged in the discharging mechanism. And a cleaning mechanism is arranged below the ball mill body. The powder collecting device has the functions of preventing powder from adhering to the interior of the shell, collecting the powder at the maximum efficiency and preventing resource waste; the poor screening effect of the discharging mechanism caused by material accumulation is prevented, and the screening effect is improved; and the cleaning mechanism is arranged to dredge the discharging grate plate, so that the polishing and discharging efficiency is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the technical field of feeding devices, and in particular relates to an automatic feeding device for a ball mill. Background Technology

[0002] Ball mills are key pieces of equipment used for further pulverizing materials after they have been crushed. This type of grinding mill uses a certain number of steel balls as grinding media inside its cylinder.

[0003] It is widely used in the production industries of cement, silicate products, new building materials, refractory materials, fertilizers, ferrous and non-ferrous metal beneficiation, and glass ceramics, for dry or wet grinding of various ores and other grindable materials. Ball mills are suitable for grinding various ores and other materials and are widely used in mineral processing, building materials, and chemical industries. They can be divided into dry and wet grinding methods. Depending on the discharge method, they can be divided into grate type and overflow type.

[0004] In the prior art, such as the ball mill discharge device disclosed in Chinese Patent (CN221360213U), there is a ball mill. The bottom of the ball mill is fixedly connected to a discharge device through a corrugated discharge pipe. The discharge device includes a screening component, a collecting component, and an adjusting component. The screening component allows large particles of ore to slide away and screens out small particles of ore that meet the requirements. The output end of the screening component is provided with a collecting component. The screening component is fixedly connected to an adjusting component, and the adjusting component can drive the screening component to swing back and forth at an angle.

[0005] This method has the following drawbacks: First, after the material in the ball mill is crushed in the crushing cylinder, it falls into the outer cylinder through the discharge grate. After being collected in the outer cylinder, it falls downward into the discharge device. Powder will be adsorbed on the inner wall of the outer cylinder. This powder cannot be effectively recycled, resulting in resource waste. Second, during the screening of powder in the inner chamber of the ball mill, long-term use can cause blockage, resulting in poor material flow, reduced crushing efficiency, and requiring shutdown and cleaning before it can be used again. Third, after the powder in the ball mill falls into the device, the insufficiently ground material and a large amount of powder accumulate together. It is easy for it to be carried out of the device outlet into the unqualified material recovery box without being screened out, resulting in a large amount of qualified powder being carried out at the same time, resulting in poor discharge effect.

[0006] Therefore, this paper provides an automatic feeding device for ball mills. Utility Model Content

[0007] To solve the above-mentioned technical problems, this utility model discloses an automatic feeding device for ball mills, which prevents powder from adhering to the inside of the outer shell, collects materials with maximum efficiency, and prevents resource waste; prevents material accumulation from causing poor screening effect of the feeding mechanism, and improves the screening effect; and sets up a cleaning mechanism to unclog the discharge grate to ensure the efficiency of grinding and feeding.

[0008] To achieve the above-mentioned technical effects, this utility model provides an automatic feeding device for a ball mill, including a ball mill body, a feeding mechanism, a drive mechanism, a powder box, and a recycling box. The feeding mechanism is located below the ball mill body and is connected to the ball mill body via a corrugated pipe. The drive mechanism is located on the right side of the feeding mechanism, the powder box is located below the feeding mechanism, and the recycling box is located on the left side of the feeding mechanism. A dust-discharging plate is provided inside the outer shell of the ball mill body. A material-discharging mechanism is provided inside the feeding mechanism. A cleaning mechanism is provided below the ball mill body.

[0009] Preferably, the top of the ash-removing plate is fixedly connected to the outer wall of the inner cylinder of the ball mill body, and the bottom of the ash-removing plate is provided with a brush that fits against the inner wall of the outer shell.

[0010] Preferably, the ash-dispensing plate is spirally arranged inside the outer shell of the ball mill body.

[0011] Preferably, the feeding mechanism further includes a transmission belt, transmission wheel a, transmission wheel b, a rotating shaft, and a feeding hopper. The transmission wheel sets are connected by a transmission belt. Transmission wheel a is located on the front side of the feeding mechanism, transmission wheel b is located on the front side of the output end of the drive mechanism, transmission wheel a and transmission wheel b are connected by a transmission belt, the rotating shaft is located on the rear side of transmission wheel a, and the feeding hopper is located on the side of the rotating shaft.

[0012] Preferably, the bottom of the feeding hopper is provided with a screen.

[0013] Preferably, the bottom of the feeding hopper is provided with a screening structure composed of crossbars.

[0014] Preferably, the cleaning mechanism further includes a sealing partition, a compressed air nozzle, a telescopic electric cylinder, and a mounting plate. The sealing partition is respectively located on both sides of the pipe below the discharge port. The compressed air nozzle is located on the front side of the sealing partition, and the rear end of the compressed air nozzle is connected to the compressed air branch pipe through a compressed air hose. The mounting plate is located on the side of the pipe below the compressed air nozzle. The telescopic electric cylinder is located at the lower end of the compressed air nozzle, and the output end of the telescopic electric cylinder is connected to the lower end of the compressed air nozzle. The telescopic electric cylinder is electrically connected to the control cabinet of the ball mill body.

[0015] Preferably, the sealing partition further includes a circular plate, a connecting rod, a spring, and an annular plate. The circular plate is disposed inside the discharge port pipe and can be embedded in the inner wall of the pipe. The annular plate is disposed in front of the circular plate. The connecting rod connects the left and right ends of the circular plate and the annular plate. The spring is disposed inside the connecting rod.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] The device is equipped with a dust-discharging plate that rotates synchronously with the ball mill body. This plate pushes the material down while preventing powder from adhering to the inside of the outer shell, maximizing material collection efficiency and preventing resource waste. It also features a material-discharging mechanism that disperses and screens the ground material through a material-discharging hopper, preventing material accumulation that could impair the screening effect of the feeding mechanism and improving screening efficiency. Finally, a cleaning mechanism is included to unclog the discharge grate, ensuring efficient grinding and material feeding. Attached Figure Description

[0018] Figure 1 This is a front view of the present invention;

[0019] Figure 2 This is a left view of the present invention;

[0020] Figure 3 yes Figure 2 A sectional view of section a.

[0021] Figure 4 This is an isometric view of the internal structure of this utility model;

[0022] Figure 5 yes Figure 4 A partial schematic diagram of b in the middle;

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Ball mill body; 2. Feeding mechanism; 3. Drive mechanism; 4. Powder box; 5. Recycling box; 6. Corrugated pipe; 7. Ash-dispensing plate; 8. Transmission belt; 9. Transmission wheel a; 10. Transmission wheel b; 11. Rotating shaft; 12. Feeding hopper; 13. Compressed air nozzle; 14. Telescopic electric cylinder; 15. Mounting plate; 16. Circular plate; 17. Connecting rod; 18. Spring; 19. Ring plate. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0026] The prior art in this embodiment has the following problems: The inventors have found the following defects in the prior art: 1. After the material in the ball mill is crushed by the crushing cylinder, it falls into the outer cylinder through the discharge grate. After being collected in the outer cylinder, it falls downward into the discharge device. Powder will be adsorbed on the inner wall of the outer cylinder. This powder cannot be effectively recycled and reused, resulting in resource waste; 2. During the process of screening powder in the discharge grate in the inner chamber of the ball mill, it will become blocked after a long period of use, resulting in poor material flow, reduced crushing efficiency, and requiring shutdown and cleaning before it can be used again; 3. After the powder in the ball mill falls into the device, the material that is not fully ground and a large amount of powder accumulate together. It is easy for it to be carried out from the device outlet into the unqualified material recycling box without being screened out, resulting in a large amount of qualified powder being carried out at the same time, resulting in poor discharge effect; Example 1

[0027] like Figures 1 to 5 As shown:

[0028] Therefore, the inventor provides an automatic feeding device for a ball mill, including a ball mill body 1, a feeding mechanism 2, a drive mechanism 3, a powder box 4, and a recycling box 5. The feeding mechanism 2 is located below the ball mill body 1, and the ball mill body 1 and the feeding mechanism 2 are connected by a corrugated pipe 6. The drive mechanism 3 is located on the right side of the feeding mechanism 2. The powder box 4 is located below the feeding mechanism 2, and the recycling box 5 is located on the left side of the feeding mechanism 2. A dust-removing plate 7 is provided inside the outer shell of the ball mill body 1. A material-removing mechanism is provided inside the feeding mechanism 2. A cleaning mechanism is provided below the ball mill body 1.

[0029] Using the above scheme, after the ball mill body 1 grinds the material, the material moves to the left side of the ball mill body 1 as the ball mill rotates. After being ground by the ball mill, the material becomes qualified powder and some unqualified material. During the rotation of the ball mill body 1, this material leaks out from the side discharge grate and falls into the inner side of the outer shell. During the rotation of the ball mill body 1, the dust removal plate 7 sweeps the ground material from the discharge port below the outer shell, and the material enters the feeding mechanism 2. After passing through the dust removal mechanism, the falling material is... The material is dispersed to initially separate the powder from the unqualified material. The drive mechanism 3 drives the feeding mechanism 2 to the left for screening. The qualified powder is screened into the powder box 4 from below the feeding mechanism 2, while the unqualified material is screened out from the left side of the feeding device and falls into the recycling box 5. After the discharge grate (not shown in the figure) has been used for a long time, the cleaning mechanism can use compressed air to flush out the blockage from the outside of the discharge grate, cleaning the discharge grate. The blocked material is flushed back into the inner cylinder of the ball mill and then discharged after being ground into powder again. Example 2

[0030] like Figures 1 to 5As shown:

[0031] Furthermore, the top of the dust removal plate 7 is fixedly connected to the outer wall of the inner cylinder of the ball mill body 1, and the bottom of the dust removal plate 7 is provided with a brush (not shown in the figure) that fits against the inner wall of the outer shell.

[0032] Furthermore, the ash-removing plate 7 is spirally arranged inside the outer shell of the ball mill body 1;

[0033] When the ball mill body 1 rotates to grind the material, the dust-dispensing plate 7 rotates synchronously with the ball mill body 1. The dust-dispensing plate 7 is equipped with a spiral plate structure. While rotating, the brush below pushes the ground material to the left and gathers it into the feed port. While pushing the material down, it prevents the powder from adhering to the inside of the shell, collects the material with maximum efficiency, and prevents waste of resources. Example 3

[0034] like Figures 1 to 5 As shown:

[0035] Furthermore, the feeding mechanism also includes a transmission belt 8, a transmission wheel a9, a transmission wheel b10, a rotating shaft 11, and a feeding hopper 12. The transmission wheel sets are connected by the transmission belt 8. The transmission wheel a9 is located on the front side of the feeding mechanism 2, the transmission wheel b10 is located on the front side of the output end of the drive mechanism 3, the transmission wheel a9 and the transmission wheel b10 are connected by the transmission belt 8, the rotating shaft 11 is located on the rear side of the transmission wheel a9, and the feeding hopper 12 is located on the side of the rotating shaft 11.

[0036] Furthermore, a screen (not shown in the figure) is provided at the bottom of the feeding hopper 12.

[0037] Furthermore, the bottom of the feeding hopper 12 is provided with a screening structure composed of crossbars (not shown in the figure).

[0038] In this process, the feeding mechanism 2, driven by the grooved transmission wheel on the front side of the drive mechanism 3, vibrates up and down to screen the material to the left. Simultaneously, the drive mechanism 3 transmits power to the transmission wheel a9 via the transmission belt 8. The transmission belt 8 has a margin and can be driven by an elastic rubber belt. Thus, the transmission belt 8 transmits power while the feeding mechanism 2 vibrates, causing the transmission wheel a9 to rotate and simultaneously driving the transmission wheel b10 to rotate. The transmission wheel a9 drives the material-feeding hopper 12 on the rotating shaft 11 to rotate. After the material falls from the feeding hopper, it first falls into the material-feeding hopper 12. As the feeding mechanism 2 vibrates to the left, the material-feeding hopper 12 is driven to rotate to the left by the power of the transmission wheel assembly, catching the falling material. As the material rotates to the left, it is vibrated and passes through the screen, allowing the qualified material to fall downwards. Alternatively, a screening structure composed of crossbars can be used to separate the mixed materials. The screened material passes through the bottom of the feeding mechanism 2 for further screening. The qualified material falls downwards into the powder box 4, while the unqualified material remaining in the hopper 12 is carried to the left by the hopper 12. After the hopper 12 flips, the material falls down and is screened to the left by the feeding mechanism 2 into the recycling box 5, completing the feeding process. In this way, the grinding material can be dispersed and screened by the hopper 12, separating the mixed material and powder first. Then, the powder is screened out by the feeding mechanism 2, preventing material accumulation and improving the screening effect of the feeding mechanism 2. Example 4

[0039] like Figures 1 to 5 As shown:

[0040] Furthermore, the cleaning mechanism also includes a sealing partition, a compressed air nozzle 13, a telescopic electric cylinder 14, and a mounting plate 15. The sealing partition is respectively set on both sides of the pipe below the discharge port. The compressed air nozzle 13 is set on the front side of the sealing partition. The rear end of the compressed air nozzle 13 is connected to the compressed air branch pipe through a compressed air hose. The mounting plate 15 is set on the side of the pipe below the compressed air nozzle 13. The telescopic electric cylinder 14 is set at the lower end of the compressed air nozzle 13. The output end of the telescopic electric cylinder 14 is connected to the lower end of the compressed air nozzle 13. The telescopic electric cylinder 14 is electrically connected to the control cabinet (not shown in the figure) of the ball mill body 1.

[0041] Furthermore, the sealing partition also includes a circular plate 16, a connecting rod 17, a spring 18, and an annular plate 19. The circular plate 16 is disposed inside the discharge port pipe and can be embedded in the inner wall of the pipe. The annular plate 19 is disposed in front of the circular plate 16. The connecting rod 17 connects the left and right ends of the circular plate 16 and the annular plate 19. The spring 18 is disposed inside the connecting rod 17.

[0042] In normal operation, the compressed air nozzle 13 at the front end of the telescopic electric cylinder 14 retracts, the spring 18 pushes the ring plate 19 outward, and the circular plate 16 is attached to the inner wall of the pipe through the connecting rod 17 to prevent material from overflowing from the pipe. When the discharge grate is blocked, causing a decrease in discharge efficiency, the telescopic electric cylinder 14 is extended by the control cabinet, pushing the compressed air nozzle 13 inward and opening the circular plate 16, allowing the compressed air nozzle 13 to enter the pipe. Then, the compressed air nozzle 13 sprays high-pressure compressed air upward to blow the blocked material in the discharge grate into the inner cylinder of the ball mill for re-grinding, clearing the discharge grate and ensuring the efficiency of grinding and discharge. After purging, the telescopic electric cylinder 14 retracts, and the spring 18 pulls the connecting rod 17 back through the ring plate 19, so that the circular plate 16 is attached to the inner wall of the pipe again.

[0043] In summary, the device is equipped with a dust-discharging plate 7, which rotates synchronously with the ball mill body 1. This pushes the material down while preventing powder from adhering to the inside of the outer shell, maximizing material collection efficiency and preventing resource waste. A material-discharging mechanism is also included, which disperses and screens the ground material through the material-discharging hopper 12, preventing material accumulation that could impair the screening effect of the feeding mechanism 2 and improving the screening efficiency. Finally, a cleaning mechanism is provided to unclog the discharge grate, ensuring efficient grinding and material feeding.

[0044] The working principle of this utility model:

[0045] After the ball mill body 1 grinds the material, the material moves to the left side of the ball mill body 1 as the ball mill rotates. After being ground by the ball mill, the material becomes qualified powder and some unqualified material. During the rotation of the ball mill body 1, these materials leak out from the discharge grate on the side and fall into the inner side of the outer shell. When the ball mill body 1 rotates to grind the material, the dust-discharging plate 7 rotates synchronously with the ball mill body 1. The dust-discharging plate 7 is equipped with a spiral plate structure. While rotating, the brush set below pushes the ground material to the left and gathers it into the discharge port. While pushing the material down, it prevents the powder from adhering to the inside of the outer shell, collects the material with maximum efficiency, and prevents waste of resources.

[0046] Material enters the feeding mechanism 2. Driven by the grooved transmission wheel on the front side of the drive mechanism 3, the feeding mechanism 2 vibrates up and down, screening the material to the left. Simultaneously, the drive mechanism 3 transmits power to the transmission wheel a9 via the transmission belt 8. The transmission belt 8 has a margin and can use an elastic rubber belt for transmission. In this way, the transmission belt 8 can transmit power while the feeding mechanism 2 vibrates, causing the transmission wheel a9 to rotate and driving the transmission wheel b10 to rotate. The transmission wheel a9 drives the feeding hopper 12 on the rotating shaft 11 to rotate. After the material in the feeding hopper falls, it first falls into the feeding hopper 12. As the feeding mechanism 2 vibrates to the left, the feeding hopper 12 is driven to the left by the power of the transmission wheel set and rotates to the left, catching the falling material. As the material rotates to the left, it is vibrated and passes through a screen to screen the qualified material downwards. Alternatively, a screening structure composed of crossbars can be used to separate the mixed materials. The screened material passes through the bottom of the feeding mechanism 2 for further screening. The qualified material falls downwards into the powder box 4, while the unqualified material remaining in the feeding hopper 12 is carried to the left by the feeding hopper 12. After the feeding hopper 12 flips, the material falls down and is screened to the left by the feeding mechanism 2 into the recycling box 5, completing the feeding process. In this way, the grinding material can be dispersed and screened by the feeding hopper 12, and the mixed material and powder can be screened out first. Then, the powder is screened out by the feeding mechanism 2, which prevents the material from accumulating and thus improves the screening effect of the feeding mechanism 2.

[0047] Under normal operating conditions, the compressed air nozzle 13 at the front end of the telescopic electric cylinder 14 retracts, the spring 18 pushes the ring plate 19 outward, and the circular plate 16 is attached to the inner wall of the pipe through the connecting rod 17 to prevent material from overflowing from the pipe. When the discharge grate is blocked, causing the discharge efficiency to decrease, the telescopic electric cylinder 14 is extended by controlling the control cabinet to push the compressed air nozzle 13 inward and open the circular plate 16, allowing the compressed air nozzle 13 to enter the pipe. Then, the compressed air nozzle 13 sprays high-pressure compressed air upward to blow the blocked material in the discharge grate into the inner cylinder of the ball mill for re-grinding, clearing the discharge grate and ensuring the efficiency of grinding and material discharge. After the purging is completed, the telescopic electric cylinder 14 retracts, and the spring 18 pulls the connecting rod 17 back through the ring plate 19, so that the circular plate 16 is attached to the inner wall of the pipe again.

[0048] This concludes the description of the working principle of the device.

[0049] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0050] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic feeding device for a ball mill, comprising a ball mill body (1), a feeding mechanism (2), a drive mechanism (3), a powder box (4), and a recycling box (5), wherein the feeding mechanism (2) is located below the ball mill body (1) and the ball mill body (1) is connected to the feeding mechanism (2) via a corrugated pipe (6), the drive mechanism (3) is located on the right side of the feeding mechanism (2), the powder box (4) is located below the feeding mechanism (2), and the recycling box (5) is located on the left side of the feeding mechanism (2), characterized in that: The inner side of the outer shell of the ball mill body (1) is provided with a dust-removing plate (7); the inside of the feeding mechanism (2) is provided with a material-removing mechanism; and a cleaning mechanism is provided below the ball mill body (1).

2. The automatic feeding device for a ball mill according to claim 1, characterized in that: The top of the dust removal plate (7) is fixedly connected to the outer wall of the inner cylinder of the ball mill body (1), and the bottom of the dust removal plate (7) is provided with a brush that fits against the inner wall of the outer shell.

3. The automatic feeding device for a ball mill according to claim 1, characterized in that: The ash-removing plate (7) is spirally arranged inside the outer shell of the ball mill body (1).

4. The automatic feeding device for a ball mill according to claim 1, characterized in that: The feeding mechanism also includes a transmission belt (8), a transmission wheel a (9), a transmission wheel b (10), a rotating shaft (11), and a feeding hopper (12). The transmission wheel a (9) is located on the front side of the feeding mechanism (2), the transmission wheel b (10) is located on the front side of the output end of the drive mechanism (3), the transmission wheel a (9) and the transmission wheel b (10) are connected by the transmission belt (8), the rotating shaft (11) is located on the rear side of the transmission wheel a (9), and the feeding hopper (12) is located on the side of the rotating shaft (11).

5. The automatic feeding device for a ball mill according to claim 4, characterized in that: The bottom of the feeding hopper (12) is provided with a screen.

6. The automatic feeding device for a ball mill according to claim 4, characterized in that: The bottom of the feeding hopper (12) is provided with a screening structure composed of crossbars.

7. The automatic feeding device for a ball mill according to claim 1, characterized in that: The cleaning mechanism also includes a sealing partition, a compressed air nozzle (13), a telescopic electric cylinder (14), and a mounting plate (15). The sealing partition is respectively set on both sides of the pipe below the discharge port. The compressed air nozzle (13) is set on the front side of the sealing partition. The rear end of the compressed air nozzle (13) is connected to the compressed air branch pipe through a compressed air hose. The mounting plate (15) is set on the side of the pipe below the compressed air nozzle (13). The telescopic electric cylinder (14) is set at the lower end of the compressed air nozzle (13). The output end of the telescopic electric cylinder (14) is connected to the lower end of the compressed air nozzle (13). The telescopic electric cylinder (14) is electrically connected to the control cabinet of the ball mill body (1).

8. The automatic feeding device for a ball mill according to claim 7, characterized in that: The sealing partition also includes a circular plate (16), a connecting rod (17), a spring (18), and an annular plate (19). The circular plate (16) is located inside the discharge port pipe and can be embedded in the inner wall of the pipe. The annular plate (19) is located in front of the circular plate (16). The connecting rod (17) is connected between the left and right ends of the circular plate (16) and the annular plate (19). The spring (18) is located inside the connecting rod (17).

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