Concentric dual shaft basket bead mill

Abstract

The utility model relates to a concentric double-shaft basket type bead mill, including base, be provided with lifting base in the base, lifting base one end is provided with grinding device, the grinding device includes with the fixed connection of lifting base fixed sleeve, fixed sleeve outside fixed connection has the sealing top cap, the inside of fixed sleeve from outside to inside is provided with mill basket rotary drum and pivot successively, the mill basket rotary drum bottom is hung and is provided with mill basket, and the whole body of mill basket is provided with a plurality of filter screens, the mill basket bottom is provided with a circle of stirring fan blade, the lower extreme of pivot stretches into mill basket and is provided with spiral conveyer belt, spiral conveyer belt below, pivot terminal fixed connection has the turbine rotor, and the whole body of turbine rotor is provided with a plurality of the clearance that can pass through material, and turbine rotor outside fixed connection has a plurality of bar pin, the movable material cylinder that can be provided outside grinding device. The utility model discloses reasonable in structure, and the high viscosity material can be better conveyed through spiral conveyer belt conveying material.

Description

Technical Field

[0001] This utility model relates to the field of wet grinding equipment, and in particular to a concentric double-shaft basket bead mill. Background Technology

[0002] A basket mill is a grinding device, typically composed of a grinder, grinding basket, pump impeller, dispersing disc, grinding beads, and drive unit. It is suitable for materials such as coatings, inks, paints, and battery slurries. Its working principle is as follows: the grinder, pump impeller, and dispersing disc rotate at high speed. The grinder drives the grinding beads and materials to generate intense shearing and collision, achieving the effects of grinding, dispersing, and agglomerating the materials. Simultaneously, the ground material is sucked out of the grinding basket by the strong suction of the pump impeller and then dispersed by the dispersing disc. This cycle repeats, achieving ideal grinding results in a short time. However, existing basket mills have the following problems: the dispersing disc and pump impeller are usually smaller than the diameter of the grinding basket, making them unsuitable for large-capacity feed cylinders; when grinding high-viscosity materials, the material enters the grinding basket slowly and may clog the opening, resulting in low grinding efficiency; the grinding basket is usually a fixed structure, making cleaning cumbersome. Utility Model Content

[0003] To overcome the shortcomings of the existing technology mentioned above, this utility model provides a concentric double-shaft basket-type bead mill.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a concentric double-shaft basket bead mill, including a base, a lifting base is arranged inside the base, and a grinding device is arranged at one end of the lifting base. The grinding device includes a fixed sleeve fixedly connected to the lifting base, and a sealing top cover is fixedly connected to the outside of the fixed sleeve. The top surface of the sealing top cover has a feed port, a vacuum port and a temperature measuring port. Inside the fixed sleeve, from the outside to the inside, there are a grinding basket rotating cylinder driven by a grinding basket motor and a rotating shaft driven by a grinding motor. The bottom of the grinding basket rotating cylinder is suspended by a connecting rod. The grinding basket is equipped with several filter screens around its perimeter. A ring of stirring blades is located at the bottom of the grinding basket. The lower end of the rotating shaft extends into the grinding basket and is fitted with a spiral conveyor belt. A turbine rotor is fixedly connected below the spiral conveyor belt and at the end of the rotating shaft. The turbine rotor has several gaps around its perimeter for material to pass through. Several pins are fixedly connected to the outside of the turbine rotor. Several grinding beads are placed between the grinding basket and the turbine rotor. The central axes of the grinding basket and the rotating shaft are located on the same straight line. A movable material cylinder is provided outside the grinding device. The cavity inside the movable material cylinder is a stirring cavity.

[0005] Preferably, a thermometer is installed inside the temperature measuring port to detect the temperature inside the movable material cylinder. When the temperature exceeds the set value, the grinding device stops working.

[0006] Preferably, the vacuum port is connected to an external vacuum pump station, which performs vacuum treatment on the stirring cavity.

[0007] Preferably, the lifting base is driven by a hydraulic lifting pump station.

[0008] Preferably, the top surface of the grinding basket is concave in the center. When the material to be stirred enters the stirring cavity, the material on the top surface of the grinding basket will enter the inside of the grinding basket along the top surface, thereby improving the feeding efficiency.

[0009] Preferably, the gap of the turbine rotor is smaller than the diameter of the grinding beads to prevent the grinding beads from entering the turbine rotor from the gap.

[0010] Preferably, the gaps in the filter screen are trapezoidal, so that the ground material will not re-enter the grinding basket from the filter screen after it has been discharged.

[0011] Preferably, the grinding motors are driven to rotate the shaft by a belt, and the grinding basket motor is driven to rotate the grinding basket drum by a sprocket.

[0012] Preferably, the movable material cylinder is fitted with a cooling device around its body and below. The cooling device includes a cooling shell, a cooling water jacket is installed inside the cooling shell, and a number of heat dissipation fins are provided inside the cooling water jacket for auxiliary cooling. The heat dissipation efficiency is further improved by the cooling water jacket and the heat dissipation fins.

[0013] Preferably, the movable material cylinder is equipped with casters at the bottom, which makes it easy to replace the material cylinder with a different capacity according to actual needs, making it convenient to use.

[0014] The beneficial effects of this utility model are that, through the concentric double-shaft design, after the bead mill has finished grinding and discharged the material, it is only necessary to rotate the grinding basket and the rotating shaft again to throw off the material attached to the grinding basket and the rotating shaft, which is convenient for cleaning; the stirring fan blades drive the material to roll upward, which can be applied to large-capacity material cylinders; the spiral conveyor belt can better transport high-viscosity materials and prevent material blockage. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the internal structure of this utility model;

[0017] Figure 2 This is a top view of the present invention;

[0018] Figure 3 This is a perspective view of the grinding device of this utility model;

[0019] Figure 4 yes Figure 1 A magnified view of a section at point A in the middle;

[0020] Figure 5 yes Figure 4 A magnified view of a section at point B in the middle;

[0021] In the diagram, 1. Base; 2. Lifting base; 3. Grinding device; 4. Fixed sleeve; 5. Grinding basket motor; 6. Grinding basket drum; 7. Grinding motor; 8. Rotating shaft; 9. Connecting rod; 10. Grinding basket; 11. Filter screen; 12. Stirring fan blade; 13. Spiral conveyor belt; 14. Turbine rotor; 15. Pin; 16. Movable material cylinder; 17. Stirring cavity; 18. Feed inlet; 19. Cooling water jacket; 20. Heat sink; 21. Casters; 22. Hydraulic lifting pump station; 23. Vacuum port; 24. Temperature measuring port; 25. Sealed top cover. Detailed Implementation

[0022] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0023] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features for a similar purpose, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0024] like Figure 1-5 The concentric double-shaft basket bead mill shown includes a base 1, a lifting base 2 inside the base 1, and a grinding device 3 at one end of the lifting base 2. The grinding device 3 includes a fixed sleeve 4 fixedly connected to the lifting base 2, and a sealing top cover 25 fixedly connected to the outside of the fixed sleeve. The top surface of the sealing top cover 25 has a feed inlet 18, a vacuum port 23, and a temperature measuring port 24. Inside the fixed sleeve 4, from the outside to the inside, there are a grinding basket rotating cylinder 6 driven by a grinding basket motor 5 and a rotating shaft 8 driven by a grinding motor 7. A grinding basket 10 is suspended from the bottom of the grinding basket rotating cylinder 6 by a connecting rod 9. The grinding basket 10 is provided with several filters around its perimeter. The grinding basket 10 has a ring of stirring blades 12 at its bottom. The lower end of the rotating shaft 8 extends into the grinding basket 10 and is fitted with a spiral conveyor belt 13. A turbine rotor 14 is fixedly connected below the spiral conveyor belt 13 and at the end of the rotating shaft 8. The turbine rotor 14 has several gaps around its body for material to pass through. Several pins 15 are fixedly connected to the outside of the turbine rotor 14. Several grinding beads are placed between the grinding basket 10 and the turbine rotor 14. The central axes of the grinding basket 10 and the rotating shaft 8 are on the same straight line. A movable material cylinder 16 is provided outside the grinding device 3. The cavity inside the movable material cylinder 16 is a stirring cavity 17.

[0025] A thermometer is installed inside the temperature measuring port 24. The temperature inside the movable material cylinder 16 is detected by the thermometer. When the temperature exceeds the set value, the grinding device 3 stops working.

[0026] The vacuum port 23 is connected to an external vacuum pump station, which performs vacuum treatment on the stirring cavity 17.

[0027] The operating time of the grinding device 3 is controlled by an external control panel.

[0028] The lifting base 2 is driven by a hydraulic lifting pump station 22.

[0029] The top surface of the grinding basket 10 is concave in the center. When the material to be stirred enters the stirring cavity 17, the material on the top surface of the grinding basket 10 will enter the interior of the grinding basket 10 along the top surface of the grinding basket 10, thereby improving the feeding efficiency.

[0030] The gap of the turbine rotor 14 is smaller than the diameter of the grinding beads to prevent the grinding beads from entering the interior of the turbine rotor 14 through the gap.

[0031] The gaps in the filter screen 11 are trapezoidal, so that the ground material will not re-enter the grinding basket 10 from the filter screen 11 after it has been discharged.

[0032] The grinding motors 7 drive the rotating shaft 8 to rotate via belts, and the grinding basket motor 5 drives the grinding basket drum 6 to rotate via sprockets.

[0033] The movable material cylinder 16 is fitted with a cooling device around its body and below. The cooling device includes a cooling shell, a cooling water jacket 19 is installed inside the cooling shell, and a number of heat dissipation fins 20 are provided inside the cooling water jacket 19 for auxiliary cooling. The cooling water jacket 19 and the heat dissipation fins 20 further improve the heat dissipation efficiency.

[0034] The movable material cylinder 16 is equipped with casters 21 at the bottom, which makes it easy to replace the material cylinder with other capacities according to actual needs, making it convenient to use. Specific Implementation

[0035] In use, the lifting base 2 drives the grinding device 3 to descend into the movable material cylinder 16. The sealing top cover 25 is in contact with the top surface of the movable material cylinder 16. At this time, the stirring cavity 17 is a closed space. Then, the material to be ground is injected into the movable material cylinder 16 through the inlet 18. The external grinding basket motor 5 drives the grinding basket drum 6 to rotate the grinding basket 10. The grinding motor 7 drives the rotating shaft 8 to drive the turbine rotor 14, the spiral conveyor belt 13 to rotate relative to the grinding basket 10. The material is transported to the turbine rotor 14 under the action of the spiral conveyor belt 13, and then transported to the grinding basket 10 through the gap of the turbine rotor 14. Then, the material is ground under the action of the pin 15 and the grinding beads. The ground material is discharged from the filter screen 11 into the stirring cavity 17. At the same time, the unground material will be turned up by the action of the stirring fan blade 12 and enter the turbine rotor 14 through the spiral conveyor belt 13, and the cycle repeats.

[0036] This design is ingenious. Through a concentric double-shaft design, after grinding and discharging the material, the bead mill only needs to inject cleaning fluid while simultaneously rotating the grinding basket and shaft again to fling off any material adhering to the ends of the basket and shaft, facilitating cleaning. The stirring blades drive the material upwards, making it suitable for large-capacity material cylinders. The spiral conveyor belt transports high-viscosity materials more effectively, preventing material blockage. The stirring cavity is a vacuum, sealed space, effectively suppressing foaming of the ground material. Furthermore, the control panel allows operators to easily and conveniently set the operating time and duration of the grinding device, facilitating control over grinding fineness and quality. This application uses hydraulic lifting to elevate the grinding device, and the internal structure facilitates subsequent maintenance and repair, requiring no specialized technicians. The casters allow for easy replacement of the movable material cylinder, enabling the substitution of cylinders with different capacities to meet actual usage needs. The cooling device effectively prevents overheating of the mechanical parts and prevents material decomposition at high temperatures, ensuring grinding quality while maintaining the viscosity stability of the material.

[0037] This invention is not limited to the specific embodiments described above. This invention extends to any new feature or combination disclosed in this specification, as well as any new method or process step or combination disclosed herein.

Claims

1. A concentric double-shaft basket-type bead mill, characterized in that: The device includes a base (1), a lifting base (2) inside the base (1), and a grinding device (3) at one end of the lifting base (2). The grinding device (3) includes a fixed sleeve (4) fixedly connected to the lifting base (2). A sealing top cover (25) is fixedly connected to the outside of the fixed sleeve. The top surface of the sealing top cover (25) is provided with a feed inlet (18), a vacuum port (23), and a temperature measuring port. Inside the fixed sleeve (4), from the outside to the inside, there are a grinding basket rotating cylinder (6) driven by a grinding basket motor (5) and a rotating shaft (8) driven by a grinding motor (7). The bottom of the grinding basket rotating cylinder (6) is suspended by a connecting rod (9) with a grinding basket (10). Several filter screens (11) are provided around the grinding basket (10). A ring of stirring blades (12) is provided at the bottom of the grinding basket (10). The lower end of the rotating shaft (8) extends into the grinding basket (10) and is fitted with a spiral conveyor belt (13). A turbine rotor (14) is fixedly connected below the spiral conveyor belt (13) and at the end of the rotating shaft (8). Several gaps are opened around the turbine rotor (14) for materials to pass through. Several pins (15) are fixedly connected to the outside of the turbine rotor (14). Several grinding beads are placed between the grinding basket (10) and the turbine rotor (14). The central axis of the grinding basket (10) and the rotating shaft (8) is located on the same straight line. A movable material cylinder (16) is provided outside the grinding device (3). The cavity inside the movable material cylinder (16) is a stirring cavity (17).

2. The concentric double-shaft basket-type bead mill according to claim 1, characterized in that: A temperature measuring instrument is installed inside the temperature measuring port (24).

3. The concentric double-shaft basket-type bead mill according to claim 1, characterized in that: The top surface of the grinding basket (10) is concave in the center.

4. The concentric double-shaft basket-type bead mill according to claim 1, characterized in that: The gap of the turbine rotor (14) is smaller than the diameter of the grinding beads.

5. A concentric double-shaft basket-type bead mill according to claim 1, characterized in that: The gaps in the filter (11) are trapezoidal.

6. A concentric double-shaft basket-type bead mill according to claim 1, characterized in that: The grinding motors (7) drive the rotating shaft (8) to rotate via belts, and the grinding basket motor (5) drives the grinding basket drum (6) to rotate via sprockets.

7. A concentric double-shaft basket-type bead mill according to claim 1, characterized in that: The movable material cylinder (16) is fitted with a cooling device around its body and below. The cooling device includes a cooling shell, a cooling water jacket (19) is installed inside the cooling shell, and a number of heat sinks (20) for auxiliary cooling are provided inside the cooling water jacket (19).

8. A concentric double-shaft basket-type bead mill according to claim 1, characterized in that: The movable material cylinder (16) is equipped with casters (21) at the bottom.

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