Powder ball mill

Abstract

The utility model discloses a powder ball mill, which comprises a support frame, a ball milling barrel, a feed / discharge port and a sealing cover, and further comprises a collecting box arranged on the support frame, and the top opening end of the collecting box is tightly abutted against the circumferential outer wall of the ball milling barrel; the filter screen is fixed on the inner wall of the collecting box and is used for blocking the metal balls; and the powder collecting pipe is connected to the bottom of the collecting box. According to the powder collecting device, stable collecting of material powder can be achieved, the risk of powder flying is reduced, and therefore the risk of environmental pollution is reduced.

Description

Technical Field

[0001] The utility model relates to the field of ball mills, in particular to a powder ball mill. Background Art

[0002] At present, the main preparation methods for synthesizing perovskite luminophores are solution method and high-temperature calcination method. The high-temperature calcination method is suitable for large-scale preparation of high-efficiency and high-stability perovskite luminophores. The perovskite precursor is reacted and melted at high temperature, and then cooled and crystallized in the micro / mesoporous template to form perovskite nanocrystals. Due to the coating effect of the micro / mesoporous template, these perovskite nanocrystals have stable optical properties. However, since high-temperature calcination easily causes the micro / mesoporous template to cluster and bond, the perovskite luminophores obtained by the existing high-temperature calcination preparation technology are relatively large in size, usually in the order of tens to hundreds of microns, which limits the further application of these perovskite luminophores in inkjet printing, Micro LED, and light conversion films. Our company obtains small-sized perovskite luminophores by post-ball milling the perovskite luminophores obtained by the high-temperature calcination method.

[0003] The ball mill in the prior art usually includes a support frame and a ball mill cylinder, the ball mill cylinder is provided with a material inlet and discharge port, and a sealing cover capable of sealing the material inlet and discharge port is provided on the ball mill cylinder. The material and metal balls are put into the ball mill cylinder through the material inlet and discharge port, and then the sealing cover is connected to the ball mill cylinder, and then the driving mechanism on the support frame is used to control the rotation of the ball mill cylinder to achieve material grinding.

[0004] When the powder needs to be collected, the sealing cover is removed, and the driving mechanism on the support frame controls the ball mill cylinder to rotate, and the inlet and outlet are downward, at which time the material can be discharged through the inlet and outlet. In this process, the driving mechanism on the support frame controls the ball mill cylinder to swing back and forth to fully discharge the powder.

[0005] However, when the ball mill body reciprocates, powder will fly after being discharged from the inlet and outlet, which is not conducive to subsequent powder collection and cleaning operations and needs to be improved. Utility Model Content

[0006] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a powder ball mill that can achieve stable collection of material powder while reducing the risk of powder flying to avoid pollution to the production environment.

[0007] The above technical purpose of the utility model is achieved through the following technical solutions: a powder ball mill, including a support frame, a ball mill cylinder, a feed and discharge port and a sealing cover, the ball mill also includes:

[0008] A collecting box is arranged on the supporting frame, and the top opening end of the collecting box is tightly abutted against the circumferential outer wall of the ball mill cylinder;

[0009] A filter screen is fixed on the inner wall of the collection box and is used to block the metal balls;

[0010] A powder collection tube connected to the bottom of the collection box;

[0011] The middle part of the filter screen is arched upwards, and the upper surface of the filter screen forms a guide surface.

[0012] In a preferred example, the utility model can be further configured as follows: metal ball collecting pipes are respectively connected to both sides of the collecting box, and the metal ball collecting pipes are arranged along the tangent direction of the guide surface to achieve smooth collection of metal balls.

[0013] In a preferred example, the utility model can be further configured as follows: the middle position of the bottom wall of the collection box is recessed downward to form a guide surface, and the powder collection pipe is connected to the lowest end of the bottom of the collection box.

[0014] In a preferred example, the utility model can be further configured as follows: the collection box is vertically slidably connected to the support frame, and a control member for controlling the vertical movement of the collection box is provided on the support frame.

[0015] In a preferred example, the utility model can be further configured as follows: the control component includes two symmetrically arranged electric push rods, the tail ends of the electric push rods are fixed to the supporting frame, and the telescopic ends are fixed to the bottom of the collection box.

[0016] In a preferred example, the utility model can be further configured as follows: an elastic sealing ring is fixedly connected to the top opening of the collecting box to improve the sealing performance between the collecting box and the ball mill cylinder.

[0017] In summary, the utility model has the following beneficial effects:

[0018] 1. By arranging a collecting box abutting against the ball mill cylinder on the supporting frame, and the inlet and outlet can be located in the collecting box, when the ball mill cylinder swings back and forth, the material powder is discharged into the collecting box through the inlet and outlet, and then discharged through the powder collecting pipe, so as to realize the stable collection of material powder, reduce the risk of powder flying, and thus reduce the risk of environmental pollution;

[0019] 2. The metal balls are blocked by the filter, collected by the metal ball collection tube, and the material powder is collected by the powder collection tube, thereby realizing the automatic classification and collection of metal balls and material powder. There is no need for subsequent sorting of metal balls, which reduces the burden on staff and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an embodiment;

[0021] Figure 2 yes Figure 1 Structural cross-section view.

[0022] Figure numerals: 1. Support frame; 2. Ball mill cylinder; 3. Inlet and outlet; 4. Sealing cover; 5. Lifting ring; 6. Collecting box; 7. Filter screen; 8. Powder collecting tube; 9. Guide surface; 10. Metal ball collecting tube; 11. Guide surface; 12. Control part; 121. Electric push rod; 13. Sealing ring. DETAILED DESCRIPTION

[0023] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0024] Reference Figure 1 , Figure 2 A powder ball mill comprises a support frame 1, on which a ball mill cylinder 2 is rotatably connected, and the ball mill cylinder 2 is arranged horizontally. The ball mill cylinder 2 is provided with a feed and discharge port 3 for feeding and discharging operations. A sealing cover 4 is connected to the ball mill cylinder 2 by fastening screws, and the sealing cover 4 can close the feed and discharge port 3. At the same time, a plurality of lifting rings 5 ​​are fixedly connected to the support frame 1.

[0025] Reference Figure 1 , Figure 2 The ball mill also includes a collecting box 6 arranged on the supporting frame 1, wherein the collecting box 6 is located below the ball mill cylinder 2, and the top opening end of the collecting box 6 is tightly abutted against the circumferential outer wall of the ball mill cylinder 2, so that the material powder and metal balls can be discharged into the collecting box 6 through the feed and discharge port 3.

[0026] Reference Figure 1 , Figure 2 A filter screen 7 is fixedly connected to the inner wall of the collection box 6, and the filter screen 7 is used to block the metal balls to achieve automatic separation of material powder and metal balls during the collection process. At the same time, a powder collection pipe 8 is connected to the bottom of the collection box 6 for the material powder to be discharged.

[0027] When the material needs to be ground, the ball mill cylinder 2 is first rotated to set the discharge port 3 upward. Then the powder material and metal balls to be ball milled are put into the ball mill cylinder 2 through the discharge port 3, and then the sealing cover 4 is connected to the ball mill cylinder 2, and then the driving mechanism on the support frame 1 is used to control the rotation of the ball mill cylinder 2 to achieve material grinding.

[0028] When the material powder needs to be collected, the sealing cover 4 is removed, and the ball mill cylinder 2 is controlled to rotate by the driving mechanism on the support frame 1, and the feed and discharge port 3 is directed to the collection box 6. At this time, the metal balls and materials are discharged into the collection box 6 through the feed and discharge port 3, the filter screen 7 blocks the metal balls, and the material powder is discharged through the powder collection pipe 8. In this process, the reciprocating swing of the ball mill cylinder 2 is controlled by the driving mechanism on the support frame 1, but it is necessary to ensure that the feed and discharge port 3 is always directed to the collection box 6 so that the powder can be fully discharged. It should be pointed out that the driving mechanism can be a servo motor that can rotate forward or reverse, and the servo motor can be controlled by a PLC controller. This is a prior art and is only briefly described here.

[0029] By arranging a collecting box 6 on the supporting frame 1 to abut against the ball mill cylinder 2, and the direction of the inlet and discharge port 3 can be located in the collecting box 6, when the ball mill cylinder 2 swings back and forth, the material powder is discharged into the collecting box 6 through the inlet and discharge port 3, and then discharged through the powder collection pipe 8, thereby realizing the stable collection of the material powder, reducing the risk of powder flying, and thus reducing the risk of environmental pollution.

[0030] Reference Figure 1 , Figure 2 , the middle part of the filter screen 7 is arched upward, and a guide surface 9 is formed on the upper surface of the filter screen 7, so that the metal ball and the material powder can slide along the guide surface 9, and the metal ball can roll to the two sides of the filter screen 7, so as to reduce the risk of material piling on the filter screen 7 and ensure the filtering effect. In addition, when the metal ball falls to the arched middle part of the filter screen 7, the filter screen 7 will be deformed under the impact of the metal ball, which will cause the powder originally attached to the filter screen 7 to vibrate, so as to further accelerate the separation of the powder originally attached to the filter screen 7 to the powder collection pipe 8.

[0031] The material of the filter screen 7 can be hard metal wire mesh or hard silica gel. In addition, after seeing this application, those skilled in the art are also motivated to choose other suitable materials to constitute the filter screen 7 of this application, and this simple material replacement is still within the protection scope of this application.

[0032] In addition, the reasons for selecting hard metal wire mesh or hard silicone in this application are: 1. It is necessary to provide a certain hardness support so that the metal ball can be guided to the two sides of the filter screen 7 along the arc-shaped contour that arches upward in the middle; 2. When the metal ball falls from the discharge port 3, there will be a certain impact force. At this time, the filter screen needs to meet the characteristics of impact resistance, and at the same time, it can also produce a certain degree of deformation under the external impact of the metal ball to promote the vibration of the powder attached to the filter screen 7.

[0033] Reference Figure 1 , Figure 2Metal ball collecting pipes 10 are respectively connected to both sides of the collecting box 6, and the metal ball collecting pipes 10 are arranged along the tangent direction of the guide surface 9, so that the metal balls can roll along the guide surface 9 and be discharged through the metal balls, thereby realizing the smooth collection of the metal balls.

[0034] Reference Figure 1 , Figure 2 The middle part of the bottom wall of the collecting box 6 is recessed downward to form a guide surface 11, and the powder collecting pipe 8 is connected to the lowest end of the bottom of the collecting box 6 (i.e., the bottom end of the guide surface 11), so that the material powder in the collecting box 6 can be discharged smoothly through the powder collecting pipe 8, thereby improving production efficiency.

[0035] Reference Figure 1 , Figure 2 The collecting box 6 is vertically slidably connected to the supporting frame 1, and a control member 12 for controlling the vertical movement of the collecting box 6 is provided on the supporting frame 1. When the material is ground, the collecting box 6 can be controlled by the control member 12 to slide downward and separate the collecting box 6 from the ball mill cylinder 2, so as to reduce the risk of friction between the collecting box 6 and the ball mill cylinder 2, thereby increasing the service life.

[0036] Reference Figure 1 , Figure 2 The control member 12 includes a plurality of symmetrically arranged electric push rods 121, the tail ends of the electric push rods 121 are fixed to the support frame 1, and the telescopic ends are fixed to the bottom of the collection box 6, thereby realizing the smooth lifting operation of the collection box 6.

[0037] Reference Figure 1 , Figure 2 An elastic sealing ring 13 is fixedly connected to the top opening of the collecting box 6 to improve the sealing between the collecting box 6 and the ball mill cylinder 2, reduce the risk of material powder escaping through the gap between the collecting box 6 and the ball mill cylinder 2, further reduce the risk of powder flying, and maintain the workshop environment.

[0038] The specific embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make modifications to the embodiments without any creative contribution as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A powder ball mill, comprising a support frame (1), a ball mill cylinder (2), a material inlet and outlet (3) and a sealing cover (4), characterized in that: The ball mill also includes: A collecting box (6) is arranged on the supporting frame (1), and the top opening end of the collecting box (6) is tightly in contact with the circumferential outer wall of the ball mill cylinder (2); A filter screen (7) is fixed on the inner wall of the collection box (6) and is used to block the metal balls; A powder collection tube (8) connected to the bottom of the collection box (6); The middle part of the filter screen (7) is arched upwards, and the upper surface of the filter screen (7) forms a guide surface (9).

2. A powder ball mill according to claim 1, characterized in that: Metal ball collection pipes (10) are respectively connected to both sides of the collection box (6), and the metal ball collection pipes (10) are arranged along the tangent direction of the guide surface (9) to achieve smooth collection of metal balls.

3. A powder ball mill according to claim 1, characterized in that: The middle part of the bottom wall of the collecting box (6) is recessed downward to form a guide surface (11), and the powder collecting pipe (8) is connected to the lowest end of the bottom of the collecting box (6).

4. A powder ball mill according to claim 1, characterized in that: The collection box (6) is vertically slidably connected to the support frame (1), and a control member (12) for controlling the vertical movement of the collection box (6) is provided on the support frame (1).

5. A powder ball mill according to claim 4, characterized in that: The control member (12) comprises two symmetrically arranged electric push rods (121), the tail ends of the electric push rods (121) are fixed to the support frame (1), and the telescopic ends are fixed to the bottom of the collection box (6).

6. A powder ball mill according to claim 4, characterized in that: An elastic sealing ring (13) is fixedly connected to the top opening of the collecting box (6) to improve the sealing performance between the collecting box (6) and the ball mill cylinder (2).

Images