A ball milling apparatus for the production of polycrystalline cubic boron nitride materials

Abstract

This utility model relates to the field of polycrystalline cubic boron nitride (PCB) material production technology, and particularly to a ball milling device for PCB material production. The device includes a ball milling support, a ball milling cylinder rotatably mounted on the support, and a driving device below the ball milling cylinder. The key feature is that a feeding device is located at the left end of the ball milling cylinder, and a sealing cap is detachably screwed onto its right side. A discharging device is located in the middle of the ball milling cylinder, comprising a plurality of discharging holes evenly distributed on the cylinder wall. An annular receiving groove is fitted onto the ball milling cylinder and fixed to the ball milling support, with the discharging holes located inside the annular receiving groove. This ball milling device for PCB material production has high ball milling efficiency.

Description

Technical Field

[0001] This utility model relates to the field of polycrystalline cubic boron nitride material production technology, and in particular to a ball milling device for producing polycrystalline cubic boron nitride materials. Background Technology

[0002] Polycrystalline cubic boron nitride (PCB) is a synthetic superhard material with cubic boron nitride as its core component, widely used in the machining of high-hardness materials. In the preparation of PCB using cubic boron nitride, ball milling is required to refine the particles and increase the contact area with other catalysts. Existing ball milling equipment generates a large amount of dust during the process and suffers from low milling efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a ball milling device for the production of polycrystalline cubic boron nitride materials, which has high ball milling efficiency.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] A ball milling apparatus for producing polycrystalline cubic boron nitride material includes a ball milling support, a ball milling cylinder rotatably mounted on the ball milling support, a drive device located below the ball milling cylinder, a feeding device located at the left end of the ball milling cylinder, and a sealing cap that can be detachably screwed onto its right side.

[0006] A discharge device is provided in the middle of the ball mill cylinder. The discharge device includes a plurality of discharge holes, which are evenly opened on the cylinder wall of the ball mill cylinder. An annular receiving groove is fitted on the ball mill cylinder and fixed on the ball mill support. The discharge holes are located inside the annular receiving groove.

[0007] Two annular limiting grooves are formed on the wall of the ball mill cylinder. The annular receiving groove is limited inside the two annular limiting grooves. A discharge pipe is provided below the annular receiving groove, and a spiral discharge machine is horizontally provided below the discharge pipe.

[0008] As an improvement: a rotary joint is connected to the feed inlet of the ball mill cylinder, the rotary joint is fixed on the ball mill support, a screw feeder is horizontally arranged on the left side of the rotary joint, a feed pipe is arranged above the screw feeder, and an electric valve is arranged on the feed pipe.

[0009] As an improvement: the driving device includes a drive motor, which is horizontally fixed on the ball mill support. The rotor of the drive motor is connected to a reducer. A transmission gear is fixed on the output shaft of the reducer. The transmission gear meshes with a driven rack, which is fixed on the outer wall of the ball mill cylinder.

[0010] As an improvement, several protrusions are evenly distributed on the inner wall of the ball mill cylinder.

[0011] As an improvement, the inside of the ball mill cylinder is filled with a plurality of first grinding balls and second grinding balls, wherein the diameter of the first grinding balls is larger than the diameter of the second grinding balls.

[0012] In summary, this utility model has the following beneficial effects:

[0013] 1. During the ball milling process, the qualified particles produced by the ball mill can be discharged into the annular receiving groove through the discharge hole, and then discharged into the screw conveyor through the discharge pipe to be transported to the designated position, thereby improving the ball milling efficiency;

[0014] 2. The device employs a sealed design during ball mill feeding, ball milling, and ball mill discharge to effectively prevent dust from overflowing.

[0015] 3. The ball milling efficiency can be improved by uniformly distributing several protrusions inside the ball mill cylinder and filling the inside of the ball mill cylinder with grinding balls of different diameters. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this utility model, the accompanying drawings used in the description of the embodiments or prior art will be briefly introduced below.

[0017] Figure 1 A schematic diagram of the overall structure of a ball milling device for the production of polycrystalline cubic boron nitride material;

[0018] Figure 2 A schematic cross-sectional view of a ball milling apparatus for the production of polycrystalline cubic boron nitride material;

[0019] Figure 3 for Figure 2 Schematic diagram of part A in the middle;

[0020] The components include: 1. Ball mill support; 2. Ball mill cylinder; 3. Sealing cover; 4. Discharge hole; 5. Annular receiving groove; 6. Annular limiting groove; 7. Discharge pipe; 8. Screw discharge machine; 9. Rotary joint; 10. Screw feeder; 11. Feed pipe; 12. Electric valve; 13. Drive motor; 14. Reducer; 15. Transmission gear; 16. Driven rack; 17. Protrusion block; 18. First grinding ball; 19. Second grinding ball. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings.

[0022] Please refer to Figures 1-3A ball milling device for producing polycrystalline cubic boron nitride material includes a ball milling support 1, a ball milling cylinder 2 rotatably mounted on the ball milling support 1, a driving device below the ball milling cylinder 2, a feeding device at the left end of the ball milling cylinder 2, and a detachable and screw-on sealing cover 3 on the right side, with an exhaust hole on the sealing cover 3.

[0023] A discharge device is provided in the middle of the ball mill cylinder 2. The discharge device includes several discharge holes 4. The discharge holes 4 are evenly opened on the cylinder wall of the ball mill cylinder 2. An annular receiving groove 5 is fitted on the ball mill cylinder 2. The annular receiving groove 5 is fixed on the ball mill support 1. The ball mill cylinder 2 is rotatably set inside the annular receiving groove 5. The discharge holes 4 are located inside the annular receiving groove 5.

[0024] Two annular limiting grooves 6 are opened on the cylinder wall of the ball mill cylinder 2. An annular receiving groove 5 is limited inside the two annular limiting grooves 6. A discharge pipe 7 is provided below the annular receiving groove 5. A spiral discharge machine 8 is horizontally provided below the discharge pipe 7.

[0025] In this embodiment, during the ball milling process, the qualified particles produced by the ball mill can be discharged into the annular receiving groove 5 through the discharge hole 4, and then discharged into the screw conveyor 8 through the discharge pipe 7 to be transported to the designated position, thereby improving the ball milling efficiency.

[0026] A rotary joint 9 is connected to the feed inlet of the ball mill cylinder 2. The rotary joint 9 is fixed to the ball mill support 1. A screw feeder 10 is horizontally arranged on the left side of the rotary joint 9. A feed pipe 11 is arranged above the screw feeder 10 and is connected to an external storage tank. An electric valve 12 is installed on the feed pipe 11. In this embodiment, the device adopts a sealed setting at each stage of ball mill feeding, ball milling, and ball mill discharge, which can effectively prevent dust from overflowing.

[0027] The driving device includes a drive motor 13, which is horizontally fixed on the ball mill support 1. The rotor of the drive motor 13 is connected to a reducer 14, and a transmission gear 15 is fixed on the output shaft of the reducer 14. The transmission gear 15 meshes with a driven rack 16, which is fixed to the outer wall of the ball mill cylinder 2. In this embodiment, the drive motor 13 is used to drive the ball mill cylinder 2 to rotate, thereby realizing ball milling.

[0028] A plurality of protrusions 17 are evenly distributed on the inner wall of the ball mill cylinder 2. The interior of the ball mill cylinder 2 is filled with a plurality of first grinding balls 18 and second grinding balls 19, wherein the diameter of the first grinding balls 18 is larger than the diameter of the second grinding balls 19. In this embodiment, the even distribution of the protrusions 17 within the ball mill cylinder 2 and the filling of the ball mill cylinder 2 with grinding balls of different diameters can improve the ball milling efficiency.

[0029] Working principle: Open the electric valve 12 and inject the material to be ball-milled into the screw feeder 10 through the feed pipe 11. Under the action of the screw feeder 10, the material enters the ball mill cylinder 2.

[0030] When the drive motor 13 is turned on, it drives the ball mill cylinder 2 to rotate. Under the action of the first grinding ball 18, the second grinding ball 19 and the protrusion block 17, the material is ball-milled into small particles.

[0031] The qualified particles produced by the ball mill can be discharged into the annular receiving groove 5 through the discharge hole 4, and then into the screw conveyor 8 through the discharge pipe 7 to be transported to the designated position.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A ball milling apparatus for producing polycrystalline cubic boron nitride material, comprising a ball milling support, a ball milling cylinder rotatably mounted on the ball milling support, and a driving device disposed below the ball milling cylinder, characterized in that, A feeding device is provided at the left end of the ball mill cylinder, and a sealing cover can be detachably screwed on its right side; A discharge device is provided in the middle of the ball mill cylinder. The discharge device includes a plurality of discharge holes, which are evenly opened on the cylinder wall of the ball mill cylinder. An annular receiving groove is fitted on the ball mill cylinder and fixed on the ball mill support. The discharge holes are located inside the annular receiving groove. Two annular limiting grooves are formed on the wall of the ball mill cylinder. The annular receiving groove is limited inside the two annular limiting grooves. A discharge pipe is provided below the annular receiving groove, and a spiral discharge machine is horizontally provided below the discharge pipe.

2. The ball mill apparatus for producing poly crystalline cubic boron nitride material according to claim 1, wherein A rotary joint is connected to the feed inlet of the ball mill cylinder. The rotary joint is fixed on the ball mill support. A screw feeder is horizontally arranged on the left side of the rotary joint. A feed pipe is arranged above the screw feeder. An electric valve is arranged on the feed pipe.

3. The ball mill apparatus for producing poly crystalline cubic boron nitride material according to claim 1, wherein The driving device includes a drive motor, which is horizontally fixed on the ball mill support. The rotor of the drive motor is connected to a reducer, and a transmission gear is fixed on the output shaft of the reducer. The transmission gear meshes with a driven rack, which is fixed on the outer wall of the ball mill cylinder.

4. The ball mill apparatus for producing poly crystalline cubic boron nitride material according to claim 1, wherein Several protrusions are evenly distributed on the inner wall of the ball mill cylinder.

5. The ball mill apparatus for producing poly crystalline cubic boron nitride material according to claim 1, wherein The inside of the ball mill cylinder is filled with a plurality of first grinding balls and second grinding balls, wherein the diameter of the first grinding balls is larger than the diameter of the second grinding balls.

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