A dry grinding equipment for alumina ceramic powder

Abstract

This utility model relates to the field of alumina ceramic powder production technology and discloses a dry grinding equipment for alumina ceramic powder, including a machine body. The machine body includes a feed cylinder, a grinding barrel, and a discharge cylinder connected in sequence. The grinding barrel is rotatably connected to the feed cylinder and the discharge cylinder, and a drive motor on the base can drive it to rotate. The inner wall of the grinding barrel is provided with a grinding head plate, including an inner plate and an outer plate of the grinding head that fit together, with a material storage channel between them. The outer plate of the grinding head is provided with multiple annularly distributed feed grooves, and the bottom of the inner plate and the bottom of the grinding barrel are provided with discharge ports, which are connected to the discharge ports by the material storage channel. A sleeve is correspondingly fitted on the outside of the grinding barrel, and a sleeve discharge port is provided at the bottom. The sleeve discharge port of this utility model can discharge qualified materials in advance, and the annular structure of the material storage channel guides the material to collect and discharge efficiently, reducing ineffective grinding time. The sleeve is precisely fitted at the key discharge port position, which not only ensures the stability of material discharge but also indirectly reduces frictional wear between components.

Description

Technical Field

[0001] This utility model relates to the field of alumina ceramic powder production technology, and in particular to a dry grinding equipment for alumina ceramic powder. Background Technology

[0002] In the production of alumina ceramic powder, dry grinding is a key step in achieving powder refinement and homogenization. Existing application publication number CN119500341A discloses a dual-drive dry grinding device, including a grinding cylinder with a grinding cylinder shaft fixed at each end. A grinding rotor is installed inside the grinding cylinder, and a rotor drive shaft is fixed at each end of the grinding rotor. The rotor drive shafts are concentric but not coaxial with the grinding cylinder shafts, allowing them to rotate relatively independently.

[0003] However, during the grinding process, the equipment has the problem of low grinding efficiency, insufficient interaction between the material and the grinding media, which easily leads to ineffective grinding, and the delayed discharge of qualified powder, resulting in over-grinding.

[0004] Therefore, those skilled in the art urgently need to develop a dry grinding equipment for alumina ceramic powder. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a dry grinding device for alumina ceramic powder.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a dry grinding device for alumina ceramic powder, comprising a machine body, the machine body comprising a feed cylinder, a grinding barrel and a discharge cylinder connected in sequence, the top of the feed cylinder being connected to a feed inlet, and a support base being connected to both the feed cylinder and the discharge cylinder, the bottom of the support base being connected to a base, the grinding barrel being rotatably connected to the feed cylinder and the discharge cylinder, and a drive motor for driving the grinding barrel to rotate being provided on the base;

[0007] The grinding barrel has a grinding head plate on its inner wall. The grinding head plate includes an inner grinding head plate and an outer grinding head plate. The inner grinding head plate is in contact with the inner wall of the grinding barrel. A material storage channel is provided between the inner grinding head plate and the outer grinding head plate. Multiple feeding grooves are evenly distributed in a ring on the outer grinding head plate. The bottom of the inner grinding head plate is provided with a material outlet. The bottom of the inner grinding head plate is provided with a grinding barrel outlet. The material storage channel is connected to the feeding grooves and the material outlet of the inner grinding head plate, respectively.

[0008] A sleeve is fitted around the outside of the grinding barrel and at the opening of the inner plate of the grinding head and the outlet of the grinding barrel. The sleeve is rotatably connected to the grinding barrel and is fixedly connected to the base. The bottom of the sleeve is provided with a sleeve outlet and the bottom of the discharge cylinder is provided with a discharge cylinder outlet. Both the bottom of the discharge cylinder and the bottom of the sleeve are provided with hoppers, and the bottom of the hoppers is provided with storage bins.

[0009] Preferably, a belt is fitted onto the grinding barrel, and a pulley is connected to the output end of the drive motor, with the pulley connected to the belt.

[0010] Preferably, the inner wall of the grinding head plate is inclined in all directions from the feed cylinder to the discharge cylinder, with an inclination angle of 3° to 5°.

[0011] Preferably, a grid filter screen is provided between the inner walls of the grinding barrel and the discharge cylinder.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. After the material slides down the feed cylinder into the grinding barrel, it rotates with the grinding barrel and fully interacts with the grinding media such as steel balls and steel rods. The outer plate of the grinding head enhances the impact grinding effect. The sleeve outlet can discharge qualified material in advance. The ring structure of the storage slide guides the material to be efficiently collected and discharged, reducing ineffective grinding time.

[0014] 2. Qualified materials enter the storage bin sequentially through the feed chute, the annular storage chute, and the overlapping discharge ports (the discharge port of the grinding head inner plate, the discharge port of the grinding barrel, and the discharge port of the sleeve). Finally, after being screened by the grid filter, they are discharged from the discharge cylinder, forming an orderly and continuous material conveying chain.

[0015] 3. The inner plate of the grinding head directly protects the inner wall of the grinding barrel, preventing the material from directly contacting the barrel wall and causing wear; the sleeve is precisely fitted at the key discharge port position, which not only ensures the stability of material discharge, but also indirectly reduces frictional wear between components. Attached Figure Description

[0016] Figure 1 This is a front view structural diagram of the present utility model;

[0017] Figure 2 This is a side sectional view of the grinding barrel described in this utility model;

[0018] Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle.

[0019] In the diagram: 1-Feed cylinder; 2-Grinding barrel; 3-Discharge cylinder; 4-Support base; 5-Base; 6-Storage bin; 7-Feed inlet; 8-Sleeve; 9-Inner plate of grinding head; 10-Outer plate of grinding head; 11-Feed groove; 12-Storage slide; 13-Discharge port of inner plate of grinding head; 14-Discharge port of grinding barrel; 15-Discharge port of sleeve; 16-Hopper. Detailed Implementation

[0020] 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.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Please see Figures 1-3 This utility model provides an embodiment: a dry grinding device for alumina ceramic powder, including a machine body, the machine body including a feed cylinder 1, a grinding barrel 2 and a discharge cylinder 3 connected in sequence, the top of the feed cylinder 1 is connected to a feed port 7, a support base 4 is connected to both the feed cylinder 1 and the discharge cylinder 3, the bottom of the support base 4 is connected to a base 5, the grinding barrel 2 is rotatably connected to the feed cylinder 1 and the discharge cylinder 3, and a drive motor for driving the grinding barrel 2 to rotate is provided on the base 5;

[0024] The inner wall of the grinding barrel 2 is provided with a grinding head plate, which includes an inner grinding head plate 9 and an outer grinding head plate 10. The inner grinding head plate 9 is in contact with the inner wall of the grinding barrel 2. A material storage slide 12 is provided between the inner grinding head plate 9 and the outer grinding head plate 10. Multiple feed grooves 11 are evenly distributed in a ring on the outer grinding head plate 10. The bottom of the inner grinding head plate 9 is provided with a grinding head inner plate outlet 13 and a grinding barrel outlet 14. The material storage slide 12 is connected to the feed grooves 11 and the inner grinding head plate outlet 13 respectively.

[0025] A sleeve 8 is fitted on the outside of the grinding barrel 2 and at the opening of the inner plate of the grinding head, the discharge port 13, and the discharge port 14 of the grinding barrel. The sleeve 8 is rotatably connected to the grinding barrel 2 and is fixedly connected to the base 5. The bottom of the sleeve 8 is provided with a sleeve discharge port 15, and the bottom of the discharge cylinder 3 is provided with a discharge cylinder discharge port. Both the bottom of the discharge cylinder 3 and the sleeve 8 are provided with a hopper 16, and the bottom of the hopper 16 is provided with a storage bin 6.

[0026] Some of the ground material enters the storage chute 12 through the feed chute 11. The inner plate 9 of the grinding head can protect the inner wall of the grinding barrel 2 to prevent the ground material from coming into direct contact. The storage chute 12 has a ring structure, so the ground material falls to the lowest end along the storage chute 12.

[0027] When the inner plate discharge port 13 of the grinding head and the discharge port 14 of the grinding barrel rotate to the lowest point as the grinding barrel 2, they coincide with the discharge port 15 of the sleeve. As a result, the material in the storage slide 12 falls into the storage bin 6. The design of the discharge port 15 of the sleeve can discharge qualified materials in advance, thereby improving the grinding efficiency.

[0028] Furthermore, a belt (not shown in the figure) is fitted onto the grinding barrel 2. The output end of the drive motor is connected to a pulley, which is connected to the belt. The drive motor drives the grinding barrel 2 to rotate through the pulley, thereby causing the material and the grinding media (steel balls, steel rods, etc.) inside the grinding barrel 2 to be carried to a certain height and then fall. The outer plate 10 of the grinding head impacts and grinds the material. (The driving principle can be referred to in the case of a dual-drive dry grinding equipment CN119500341A, which will not be elaborated in this solution).

[0029] Furthermore, the inner wall of the grinding head plate is inclined in all directions from the feed cylinder 1 to the discharge cylinder 3, with an inclination angle of 3° to 5°. A grid filter screen is provided between the inner walls of the grinding barrel 2 and the discharge cylinder 3. Along the inclination direction of the grinding head plate, the material moves towards the discharge cylinder 3. Qualified material enters the discharge cylinder 3 after passing through the grid filter screen and is discharged through the hopper 16 below.

[0030] Working principle of this utility model: In use, the material to be ground is fed into the feed cylinder 1 through the feed inlet 7. It slides down the inclined inner wall of the feed cylinder 1 into the grinding barrel 2. The drive motor drives the grinding barrel 2 to rotate via a pulley, causing the material and the grinding media (steel balls, steel rods, etc.) inside the grinding barrel 2 to be carried to a certain height and then fall. The outer plate 10 of the grinding head impacts and grinds the material. Some of the properly ground material enters the storage chute 12 through the feed groove 11. The inner plate 9 of the grinding head protects the inner wall of the grinding barrel 2, preventing grinding damage. The grinding material comes into direct contact with the grinding material; the storage chute 12 has a ring structure, so the qualified grinding material falls to the lowest end along the storage chute 12. When the discharge port 13 of the inner plate of the grinding head and the discharge port 14 of the grinding barrel rotate to the lowest point with the grinding barrel 2, they coincide with the discharge port 15 of the sleeve. Then the material in the storage chute 12 falls into the storage bin 6. The design of the sleeve discharge port 15 can discharge the qualified material in advance, improving the grinding efficiency. Along the inclined direction of the grinding head plate, the material moves towards the discharge cylinder 3. The qualified material enters the discharge cylinder 3 after passing through the grid filter screen and is discharged through the hopper 16 below.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A dry grinding apparatus for alumina ceramic powder, characterized in that, The machine includes a body comprising a feed cylinder (1), a grinding barrel (2), and a discharge cylinder (3) connected in sequence. The top of the feed cylinder (1) is connected to a feed inlet (7). Both the feed cylinder (1) and the discharge cylinder (3) are connected to a support base (4). The bottom of the support base (4) is connected to a base (5). The machine is characterized in that: The grinding barrel (2) is rotatably connected to the feed cylinder (1) and the discharge cylinder (3), and the base (5) is provided with a drive motor to drive the grinding barrel (2) to rotate; The grinding barrel (2) has a grinding head plate on its inner wall. The grinding head plate includes an inner grinding head plate (9) and an outer grinding head plate (10). The inner grinding head plate (9) is attached to the inner wall of the grinding barrel (2). A storage chute (12) is provided between the inner grinding head plate (9) and the outer grinding head plate (10). A plurality of feeding grooves (11) are evenly distributed in a ring on the outer grinding head plate (10). The bottom of the inner grinding head plate (9) is provided with a grinding head plate outlet (13). The bottom of the inner grinding head plate (9) is provided with a grinding barrel outlet (14). The storage chute (12) is connected to the feeding grooves (11) and the inner grinding head plate outlet (13) respectively. A sleeve (8) is fitted outside the grinding barrel (2) and at the opening of the inner plate of the grinding head (13) and the grinding barrel (14). The sleeve (8) is rotatably connected to the grinding barrel (2). The sleeve (8) is fixedly connected to the base (5). The bottom of the sleeve (8) is provided with a sleeve outlet (15). The bottom of the discharge cylinder (3) is provided with a discharge cylinder outlet. The bottom of both the discharge cylinder (3) and the sleeve (8) is provided with a hopper (16). The bottom of the hopper (16) is provided with a storage bin (6).

2. The dry grinding equipment for alumina ceramic powder according to claim 1, characterized in that: A belt is fitted on the grinding barrel (2), and a pulley is connected to the output end of the drive motor. The pulley is connected to the belt.

3. The dry grinding equipment for alumina ceramic powder according to claim 1, characterized in that: The inner wall of the grinding head plate is inclined in all directions from the feed cylinder (1) to the discharge cylinder (3), with an inclination angle of 3° to 5°.

4. The dry grinding equipment for alumina ceramic powder according to claim 1, characterized in that: A grid filter screen is provided between the inner walls of the grinding barrel (2) and the discharge cylinder (3).

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