A new type of basket mill

Abstract

The utility model discloses a novel basket type grinding machine, including by draw bar, main shaft, grinding basket and dispersion disc component grinding unit, and the utility model discloses innovative design is in by upper grinding disc, lower grinding disc, mesh board, basket gland, shaft sleeve, moving ring subassembly, static ring subassembly and the basket component grinding basket, the utility model discloses adopt novel material suction grinding structure, and the upper grinding disc rotates and participates in grinding work simultaneously, and material suction grinding is carried out simultaneously, and the grinding efficiency is greatly improved, and the direction of the upper oblique round hole of the upper grinding disc is opposite with the lower oblique round hole of lower grinding disc, when working, grinding beads are not easy to accumulate in the vicinity of grinding disc, reduce the probability of broken pearl, and material can carry out more sufficient grinding, and the design of double -deck grinding disc, reduce the self weight of material suction impeller and grinding disc, improve the working efficiency of motor, and the production efficiency is greatly improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of metal powder grinding, specifically relating to a novel basket mill. Background Technology

[0002] A basket mill, broadly speaking, is a type of wet grinding mill, named for its basket-like working chamber. Its basic structure consists of a basket fixed to the mill head, filled with grinding media. During operation, the basket is immersed in the material, and a high-speed rotating agitator inside the basket creates a strong suction force, drawing the material into the basket for dispersion and grinding. Then, under centrifugal force, the material is thrown out of the basket. Through continuous circulation, highly efficient grinding is achieved.

[0003] However, existing technologies generally suffer from the following problems: Typical basket mills use a combination of a conical suction impeller and a conical grinding disc, resulting in a relatively large self-weight of the impeller and disc, easily leading to excessive load and wasted energy. Furthermore, conventional basket mills use rods or conical grinding discs as stirring rods; after grinding, the grinding beads may break into smaller fragments, which can enter the gap between the rotating shaft and the bushing or washer, damaging the grinding shaft and severely shortening the equipment's lifespan. This invention proposes a novel basket mill that solves these problems and defects. Utility Model Content

[0004] The purpose of this invention is to provide a new type of basket grinder to solve the problems of fragile beads and damaged grinding shaft in existing basket grinders mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel basket grinder, comprising a grinding unit consisting of a pull rod, a main shaft, a grinding basket, and a dispersing disc, wherein the grinding basket includes:

[0006] The upper grinding disc 5 is sleeved on the outer side of the upper part of the main shaft 2 and maintains a gap with the grinding basket 3. The upper grinding disc 5 has an upward oblique circular hole.

[0007] The lower grinding disc 6 is sleeved on the outer side of the lower part of the main shaft 2 near the bottom. The lower grinding disc 6 has a lower oblique circular hole that is opposite to the direction of the upper oblique circular hole.

[0008] The mesh plate 7 is located at the bottom opening of the grinding basket 3;

[0009] The basket cover 8 is located on the underside of the mesh plate 7 and is connected to the bottom of the grinding basket 3 by bolts;

[0010] Bushing 9 is fitted onto the outer bottom of the main shaft 2;

[0011] The static ring assembly 11 is fixedly installed on the basket cover 8;

[0012] The moving ring assembly 10 is disposed below the stationary ring assembly 11 and can achieve a small floating fit relative to the stationary ring assembly 11;

[0013] Basket 12 is installed inside the grinding basket 3 to house the upper grinding disc 5 and the lower grinding disc 6.

[0014] Preferably, the stationary ring assembly 11 includes a stationary ring upper cover 13, a stationary ring 14, a connecting screw 15, and a stationary ring lower cover 16. The stationary ring lower cover 16 is fixed to the basket cover 8 by bolts. The stationary ring 14 is sleeved inside the stationary ring upper cover 13 and installed between the stationary ring lower cover 16 and the stationary ring upper cover 13 by means of the connecting screw 15.

[0015] Preferably, the rotating ring assembly 10 includes a rotating ring mounting base 17, a cylindrical pin 18, a rotating ring 19, and a locking ring 20. The rotating ring mounting base 17 has a plurality of cylindrical holes adapted to the cylindrical pin 18. The cylindrical pin 18 is inserted into the rotating ring 19, and the rotating ring 19 is embedded in the cylindrical holes on the rotating ring mounting base 17 through the cylindrical pin 18. The locking ring 20 is threaded onto the rotating ring mounting base 17 and abuts the rotating ring 19 against the rotating ring mounting base 17.

[0016] Preferably, the stationary ring upper cover 13 and the stationary ring 14 are capable of axial floating with the moving ring 19 by no more than 0.5 mm.

[0017] Compared with the prior art, this utility model provides a novel basket grinder, which has the following beneficial effects:

[0018] 1. This utility model adopts a novel material suction and grinding structure. The upper grinding disc participates in the grinding process while rotating, allowing for simultaneous material suction and grinding, significantly improving grinding efficiency. The upward-sloping circular holes on the upper grinding disc are in the opposite direction to the downward-sloping circular holes on the lower grinding disc. During operation, grinding beads are less likely to accumulate near the grinding discs, reducing the probability of broken beads, while allowing for more thorough grinding of the material. The double-layer grinding disc design reduces the weight of the suction impeller and grinding discs, improves the motor's working efficiency, and greatly increases production efficiency.

[0019] 2. The dynamic and static ring assembly of this utility model adopts a novel separation sleeve design, which allows the dynamic ring to float slightly and adjust itself, reducing friction and solving the problems of ball jamming and frictional heat caused by spindle wear during the rotation of the grinding machine. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a cross-sectional schematic diagram of a novel basket grinder proposed in this utility model;

[0022] Figure 2 This is a schematic diagram of the cross-sectional structure of the grinding basket proposed in this utility model;

[0023] Figure 3 This is a schematic diagram of the upper grinding disc structure proposed in this utility model;

[0024] Figure 4 This is a schematic diagram of the lower grinding disc structure proposed in this utility model;

[0025] Figure 5 This is a schematic diagram of the static ring assembly structure proposed in this utility model;

[0026] Figure 6 This is a schematic diagram of the dynamic ring assembly structure proposed in this utility model;

[0027] In the diagram: 1. Tie rod; 2. Main shaft; 3. Grinding basket; 4. Dispersing disc; 5. Upper grinding disc; 6. Lower grinding disc; 7. Mesh plate; 8. Basket cover; 9. Bushing; 10. Moving ring assembly; 11. Stationary ring assembly; 12. Basket; 13. Upper cover of stationary ring; 14. Stationary ring; 15. Connecting screw; 16. Lower cover of stationary ring; 17. Moving ring mounting base; 18. Cylindrical pin; 19. Moving ring; 20. Locking ring. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] This utility model provides a novel basket grinder, the details of which are as follows:

[0030] For reference Figure 1The device mainly consists of a grinding unit composed of a pull rod 1, a main shaft 2, a grinding basket 3, and a dispersion disc 4. Its innovative design lies in the grinding basket 3, which is composed of an upper grinding disc 5, a lower grinding disc 6, a mesh plate 7, a basket cover 8, a bushing 9, a moving ring assembly 10, a stationary ring assembly 11, and a basket 12. During the operation of the grinding machine, the main shaft 2 rotates at high speed under the action of the drive system, driving the upper grinding disc 5 and the lower grinding disc 6 to rotate synchronously, forming the core motion structure of the grinding unit. At this time, the grinding media (such as grinding beads) and the material are placed together in the internal space of the grinding basket 3. Due to the rotational motion of the main shaft 2, the grinding beads achieve high-speed dispersion and impact under the action of centrifugal force and shear force, which promotes the material to be fully ground.

[0031] For reference Figure 1 The upper grinding disc 5 is fitted onto the outer side of the upper part of the main shaft 2, and a gap is maintained between it and the grinding basket 3. The gap range is twice the diameter of the selected grinding beads. Figure 1 At position a), the upper grinding disc 5 participates in the grinding work while rotating, and the material is sucked up and ground at the same time, which greatly improves the grinding efficiency.

[0032] like Figure 3 As shown, the upper grinding disc 5 has an upwardly inclined circular hole. When the upper grinding disc 5 is working, the grinding beads are thrown away along the edge of the inclined circular hole due to centrifugal force, thus preventing the phenomenon of beads leakage.

[0033] like Figure 4 As shown, the lower grinding disc 6 is sleeved on the outer side of the lower part of the main shaft 2 near the bottom; the lower grinding disc 6 has a lower oblique circular hole that is opposite to the direction of the upper oblique circular hole. The upper oblique circular hole of the upper grinding disc 5 is opposite to the direction of the lower oblique circular hole of the lower grinding disc 6. During operation, this can prevent the grinding beads from accumulating near the grinding disc, reduce the probability of broken beads, and allow the metal particles to be ground more thoroughly.

[0034] like Figure 2 As shown, the screen plate 7 is located at the bottom opening of the grinding basket 3; it is a grinding bead screening structure used to prevent the grinding beads from flowing out with the material.

[0035] like Figure 2 As shown, the basket cover 8 is located on the underside of the mesh plate 7 and is connected to the bottom of the grinding basket 3 by bolts; its setting is to prevent material leakage or displacement, and to ensure the sealing of the grinding chamber.

[0036] like Figure 2 As shown, the bushing 9 is fixedly sleeved on the bottom outer side of the spindle 2, which is equivalent to adding a replaceable protective sleeve to the spindle 2, improving the overall life and maintainability.

[0037] like Figure 2 and Figure 5As shown, the stationary ring assembly 11 is fixed to the basket cover 8. As the fixed end of the entire dynamic and stationary ring seal, the specific stationary ring assembly 11 includes an upper stationary ring cover 13, a stationary ring 14, a connecting screw 15, and a lower stationary ring cover 16. The lower stationary ring cover 16 is fixed to the basket cover 8 by bolts. The stationary ring 14 is fitted inside the upper stationary ring cover 13 and installed between the lower stationary ring cover 16 and the upper stationary ring cover 13 by means of the connecting screw 15. The lower stationary ring cover 16 and the connecting screw 15 form a firm, floating, and detachable stationary ring installation structure, which achieves the effects of sealing stability and convenient maintenance.

[0038] like Figure 2 and Figure 6 As shown, the rotating ring assembly 10 is positioned below the stationary ring assembly 11 and can achieve a small floating fit relative to the stationary ring assembly 11. The rotating ring assembly 10 includes a rotating ring mounting base 17, a cylindrical pin 18, a rotating ring 19, and a locking ring 20. Both the stationary ring 14 and the rotating ring 19 are made of hard alloy material, which is more wear-resistant. The rotating ring mounting base 17 has several cylindrical holes adapted to the cylindrical pin 18. The cylindrical pin 18 is inserted into the rotating ring 19, and the rotating ring 19 is embedded in the cylindrical holes on the rotating ring mounting base 17 through the cylindrical pin 18. The locking ring 20 is threaded onto the rotating ring mounting base 17. 7. In addition, the moving ring 19 is pressed against the moving ring mounting seat 17. There is a certain gap between the head of the connecting screw 15 and the lower pressure cover 16 of the stationary ring. The existence of this gap allows the upper pressure cover 13 of the stationary ring and the stationary ring 14 to float axially with the moving ring 19 by no more than 0.5mm when the device is working. The lower pressure cover 16 of the stationary ring is a fixed part, while the connecting screw 15 of the upper pressure cover 13 of the stationary ring and the stationary ring 14 is a movable part. It can adjust the gap with the moving ring 19 by floating slightly with the moving ring 19, thereby reducing friction and solving the problems of ball jamming, spindle 2 wear and frictional heat generation when the grinding machine is rotating.

[0039] It should be noted that when the rotating ring assembly 10 rotates around the main shaft 2, if there is friction, minor impact or media erosion, the force is applied to the bushing 9 rather than the main shaft 2 body, so as to avoid damage to the main shaft 2.

[0040] like Figure 2 As shown, basket 12 is installed inside grinding basket 3 to accommodate upper grinding disc 5 and lower grinding disc 6. Its structure effectively accommodates upper grinding disc 5, lower grinding disc 6 and grinding beads, forming a closed grinding system, which improves safety and stability.

[0041] The working principle and usage process of this utility model are as follows: In one implementation process, the grinding basket 3 is completely immersed in the metal granular material to be processed. After the motor is started, it drives the main shaft 2 to rotate, causing the upper grinding disc 5 and the lower grinding disc 6, which are set outside the main shaft 2, to rotate synchronously. During the rotation, the upper grinding disc 5 generates suction, which draws the metal granular material into the basket 12, and together with the grinding beads, it undergoes high-speed impact and shearing between the upper grinding disc 5 and the lower grinding disc 6. The upper grinding disc 5 and the lower grinding disc 6 are respectively provided with upwardly inclined circular holes and downwardly inclined circular holes in opposite directions, which can effectively prevent the grinding beads from accumulating and improve the flowability and grinding efficiency of the granular material.

[0042] Meanwhile, the moving ring assembly 10 located at the bottom of the main shaft 2 can slightly float relative to the stationary ring assembly 11 during operation, thereby automatically adjusting the gap between the moving ring assembly 10 and the stationary ring assembly 11 while maintaining a sealed state. This effectively reduces operating friction and heat generation, preventing wear or jamming of the main shaft 2. After thorough grinding, the refined metal powder is discharged through the mesh plate 7 under centrifugal force, completing a full working cycle.

[0043] Throughout the entire operation, this device, relying on its inherent material suction and grinding structure and dynamic-static separation floating seal design, achieves stable and efficient grinding operations, significantly extending the equipment's service life and effectively improving grinding quality and material handling capacity.

[0044] It should be noted that the dual-grinding disc structure design of the present invention enhances the grinding ability of the grinding beads. The grinding beads are made of high-purity zirconia beads, which can be mainly used for grinding and processing metal particles, but are not limited to metals. They can also be used for experimental formula research and manufacturing in industries such as ink, paint, printing and dyeing coatings, pharmaceuticals, architectural coatings, and dairy products.

[0045] 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. A new type of basket mill comprising a grinding unit consisting of a draw bar (1), a main shaft (2), a grinding basket (3) and a dispersion disc (4), characterized in that, The grinding basket (3) includes: The upper grinding disc (5) is sleeved on the outer side of the upper part of the main shaft (2) and maintains a gap with the grinding basket (3). The upper grinding disc (5) has an upward oblique circular hole. The lower grinding disc (6) is sleeved on the outer side of the lower part of the main shaft (2) near the bottom. The lower grinding disc (6) has a lower oblique circular hole that is opposite to the direction of the upper oblique circular hole. The mesh plate (7) is located at the bottom opening of the grinding basket (3); The basket cover (8) is located on the underside of the mesh plate (7) and is connected to the bottom of the grinding basket (3) by bolts; A bushing (9) is fitted onto the outer bottom of the main shaft (2); The static ring assembly (11) is fixedly installed on the basket cover (8); The moving ring assembly (10) is disposed below the stationary ring assembly (11) and can achieve a small floating fit relative to the stationary ring assembly (11); The basket (12) is installed inside the grinding basket (3) to accommodate the upper grinding disc (5) and the lower grinding disc (6).

2. A new type of basket mill according to claim 1, characterized in that: The stationary ring assembly (11) includes a stationary ring upper cover (13), a stationary ring (14), a connecting screw (15), and a stationary ring lower cover (16). The stationary ring lower cover (16) is fixed to the basket cover (8) by bolts. The stationary ring (14) is sleeved inside the stationary ring upper cover (13) and installed between the stationary ring lower cover (16) and the stationary ring upper cover (13) by means of the connecting screw (15).

3. A novel basket mill according to claim 2, characterized in that: The moving ring assembly (10) includes a moving ring mounting base (17), a cylindrical pin (18), a moving ring (19), and a locking ring (20). The moving ring mounting base (17) has several cylindrical holes adapted to the cylindrical pin (18). The cylindrical pin (18) is inserted into the moving ring (19), and the moving ring (19) is embedded in the cylindrical holes on the moving ring mounting base (17) through the cylindrical pin (18). The locking ring (20) is threaded onto the outside of the moving ring mounting base (17) and presses the moving ring (19) against the moving ring mounting base (17).

4. A novel basket mill according to claim 3, characterized in that: The pressure cap (13) on the stationary ring and the stationary ring (14) are capable of axial floating with the moving ring (19) by no more than 0.5 mm.

Images