A ball milling equipment

Abstract

The present invention relates to the technical field of ball milling equipment, in particular to a ball milling equipment; comprising a ball mill, a first feed pipe is connected to the left side of the ball mill, a discharge pipe is connected to the right side of the ball mill, the first feed pipe and the discharge pipe are both rotatably connected to the ball mill, a second feed pipe is connected to the upper end of the first feed pipe, and the ball mill is rotatably arranged on a frame; a material processing device comprises a receiving barrel connected to the lower end of the discharge pipe, a magnetic separation mechanism and a slow-down mechanism are arranged in the receiving barrel; by arranging the material processing device at the discharge of the ball mill, steel balls and materials that have undergone grinding operations can be directly separated and collected separately, and the steel balls can directly enter the cylinder of the ball mill after being cleaned, and multi-step operations can be completed by one device, simplifying the cumbersomeness of existing multi-device operations, so as to solve the problem of large floor space occupied by multiple devices at the same time.

Description

Technical Field

[0001] The invention relates to the technical field of ball milling equipment, in particular to a ball milling equipment. Background Art

[0002] The ball mill usually consists of a rotating cylinder, grinding media (usually steel balls or other metal balls) and the feed and discharge ports of the material mixture. In the rotating cylinder, when the ball mill rotates at a certain wheel speed, the grinding media (hereinafter referred to as steel balls) and the material are lifted together under the action of centrifugal force and friction, generating impact, shear, friction and rolling grinding motions, thereby achieving the grinding effect on the material.

[0003] When the ball mill is discharging materials, usually all the steel balls are poured out at once, which is convenient for cleaning the materials attached to the surface of the ball mill medium and for checking and replacing the ball mill medium. However, when grinding relatively small materials, there is no need to frequently replace the steel balls. After each grinding operation, the steel balls only need to be cleaned on the surface before re-entering the cylinder of the ball mill. The existing operation method requires pouring all the steel balls out to separate the steel balls and materials and cleaning the steel balls in steps, which requires multiple devices to be completed in steps. It will be necessary to feed and discharge the steel balls in different devices many times, which is time-consuming and labor-intensive. In addition, multiple devices occupy a large area and the multi-step operation method is cumbersome. Therefore, it is necessary to improve the ball mill equipment in one step. Summary of the invention

[0004] The present invention provides a ball milling device, which solves the problems existing in the background technology.

[0005] The present invention provides a ball milling device, comprising a ball mill, a first feed pipe is connected to the left side of the ball mill, a discharge pipe is connected to the right side of the ball mill, the first feed pipe and the discharge pipe are both rotatably connected to the ball mill, a second feed pipe is connected to the upper end of the first feed pipe, and the ball mill is rotatably arranged on a frame; a material processing device comprises a receiving barrel connected to the lower end of the discharge pipe, the receiving barrel is composed of two upper and lower cylindrical barrels that are connected and have different diameters, the cylindrical barrel at the lower end is fixedly connected to the outer wall of the cylindrical barrel at the upper end, a magnetic separation mechanism and a material buffer mechanism are arranged in the receiving barrel, and the lower side wall of the receiving barrel is provided with a magnetic separation mechanism and a material buffer mechanism. A discharge port is provided at the end; a magnetic separation mechanism is provided below the discharge pipe to perform magnetic separation operations on the steel balls; a material retarding mechanism is provided below the magnetic separation mechanism to separate the ground materials and at the same time temporarily support the steel balls; wherein the magnetic separation mechanism comprises a dividing cone fixedly connected to the inner wall of the receiving barrel, the bottom end of the dividing cone is fixedly connected to a magnetic table, the arc-shaped surface of the magnetic table has a magnetic setting, a receiving groove is provided at the bottom end of the magnetic table, a collecting barrel is rotatably connected to the receiving groove, and a plurality of scraping plates are fixedly connected to the outer wall of the collecting barrel circumferentially and passing through the interior of the collecting barrel.

[0006] In one possible implementation, the material buffering mechanism includes a material dividing frame, a ring groove is provided at the bottom end of the upper cylindrical tube of the receiving tube, the material dividing frame is connected to the ring groove through a spring, a vibration motor is arranged at the upper end of the material dividing frame and in the ring groove, the bottom end of the material dividing frame is a circular plate structure with sieve holes, and the collecting tube is movably arranged through the bottom end of the material dividing frame.

[0007] In one possible implementation, the bottom end of the collecting barrel is rotatably connected to a distribution pipe, which consists of a cylindrical structure at the upper end and two symmetrical semi-cylindrical structures at the lower end. A distribution rod is fixedly connected to the connection between the bottom end of the cylindrical structure and the two semi-cylindrical structures. The two semi-cylindrical structures are inclined from top to bottom away from the center, and the bottom ends of the two semi-cylinders pass through the bottom end of the receiving barrel and are fixedly connected to the bottom end of the receiving barrel.

[0008] In one possible implementation, the middle of the material distribution rod is rotatably connected to a cylindrical rod, the cylindrical rod is arranged along the axial direction of the receiving barrel, the cylindrical rod is located at the receiving barrel and has multiple buffer rods staggered circumferentially from top to bottom, and a driving assembly is arranged at the upper end of the cylindrical rod.

[0009] In one possible implementation, the drive assembly includes a rotating motor fixedly connected to the upper end of the cylindrical rod, the rotating motor is fixedly connected to the receiving groove at the bottom end of the magnetic table, a driving gear is fixedly connected to the cylindrical rod near the upper end, the driving gear is meshingly connected to the connecting gear, the connecting shaft of the connecting gear is rotatably connected to the receiving groove, and the connecting gear is meshingly connected to the internal gear ring arranged on the inner wall of the upper end of the collecting tube.

[0010] In one possible implementation, the scraper plate is a U-shaped structure, and the side of the scraper plate close to the magnetic table is inclined toward the other side of the scraper plate, and the outer side of the side plate of the scraper plate close to the magnetic table is set close to the curved outer wall of the magnetic table, and the inner wall of the other side of the scraper plate has an arc-shaped structure in cross section.

[0011] In a possible implementation, the buffer rod is composed of a plurality of rods of different lengths. The buffer rods are made of hard material and flexible material alternately arranged, and the spacing between the hard material buffer rods at the same height is greater than the diameter of the steel ball.

[0012] In one possible implementation, the two semi-cylindrical structures at the lower end of the material distribution pipe have a sieve plate structure with through holes on the opposite side, and the side away from the two semi-cylindrical structures is a semi-arc structure, and a plurality of arc balls are fixedly connected to the inner wall of the semi-arc structure.

[0013] In one possible implementation, it also includes a fixed seat arranged at the bottom end of the frame, the outer wall of the material receiving barrel is fixedly connected to the right side of the fixed seat, the bottom end of the material receiving barrel is fixedly connected to a ball receiving pipe, the right side of the ball receiving pipe is connected to the bottom end of the material distribution pipe, the middle of the ball receiving pipe is inclined from right to left, the upper end of the left side of the ball receiving pipe is connected to the first feeding pipe, and a screw conveyor is arranged on the inner side of the ball receiving pipe.

[0014] The above one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:

[0015] 1. A ball milling device provided according to an embodiment of the present invention can directly separate the steel balls and materials after grinding and collect them separately by arranging a material processing device at the discharge of the ball mill. The steel balls can directly enter the cylinder of the ball mill after cleaning. Multi-step operations can be completed by one device, simplifying the cumbersome operation of existing multiple devices and solving the problem of large floor space occupied by multiple devices at the same time.

[0016] 2. A ball mill provided according to an embodiment of the present invention can collect and clean steel balls while separating materials through a magnetic separation mechanism, and can simultaneously scrape the steel balls and clean the surfaces of the steel balls through a drive. The overall structural design is simple and has high practicality.

[0017] 3. A ball milling device provided according to an embodiment of the present invention can brush and clean the surface of a steel ball by setting buffer rods of different lengths and a combination of hard and flexible materials. The steel ball can be impacted at the moment it contacts the hard material, so that the material adhering to the surface of the steel ball can be loosened, making it convenient for the flexible material to be brushed. This cleaning method is simple in design, convenient and quick, and has a good cleaning effect on the surface of the steel ball. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a ball milling device provided by an embodiment of the present invention from a first perspective.

[0019] Figure 2 It is a cross-sectional view of a partial structure of a ball mill provided by an embodiment of the present invention.

[0020] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0021] Figure 4 yes Figure 2 Enlarged view of point B in the middle.

[0022] Figure 5 yes Figure 2 Front view of the structure.

[0023] Figure 6 It is a schematic diagram of a scraper plate structure of a ball mill provided in an embodiment of the present invention.

[0024] In the figure: 1. ball mill; 11. first feed pipe; 12. discharge pipe; 13. second feed pipe; 2. frame; 21. fixed seat; 3. material handling device; 30. receiving barrel; 31. magnetic separation mechanism; 311. material distribution cone; 312. magnetic table; 313. collecting barrel; 3131. material distribution pipe; 3132. material distribution rod; 3133. sieve plate; 314. ball scraper; 32. material buffer mechanism; 321. material distribution frame; 322. spring; 323. round plate; 33. discharge port; 34. cylindrical rod; 35. buffer rod; 36. driving assembly; 361. rotating motor; 362. driving gear; 363. connecting gear; 364. inner gear ring; 4. ball receiving pipe. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar improvements without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] See also Figure 1 , Figure 2 and Figure 4A ball milling device includes a ball mill 1, a first feed pipe 11 is connected to the left side of the ball mill 1, a discharge pipe 12 is connected to the right side of the ball mill 1, the first feed pipe 11 and the discharge pipe 12 are both rotatably connected to the ball mill 1, a second feed pipe 13 is connected to the upper end of the first feed pipe 11, and the ball mill 1 is rotatably arranged on a frame 2; a material processing device 3 includes a receiving barrel 30 connected to the lower end of the discharge pipe 12, and the receiving barrel 30 is composed of two upper and lower cylindrical barrels connected and having different diameters. The receiving barrel 30 is composed of a cylindrical barrel, the cylindrical barrel at the lower end is fixedly connected to the outer wall of the cylindrical barrel at the upper end, a magnetic separation mechanism 31 and a material buffering mechanism 32 are arranged in the receiving barrel 30, and a discharge port 33 is arranged at the lower end of the side wall of the receiving barrel 30; the magnetic separation mechanism 31 is arranged below the discharge pipe 12, and performs magnetic separation operations on the steel balls; the material buffering mechanism 32 is arranged below the magnetic separation mechanism 31, separates the ground materials and at the same time plays a temporary supporting role for the steel balls, so as to facilitate the subsequent magnetic separation of the steel balls. A fixed seat 21 is provided at the bottom end of the frame 2, and the outer wall of the material receiving barrel 30 is fixedly connected to the right side of the fixed seat 21, which plays a further fixing and supporting role for the material receiving barrel 30. The bottom end of the material receiving barrel 30 is fixedly connected to the ball receiving pipe 4, and the right side of the ball receiving pipe 4 is connected to the bottom end of the material distribution pipe 3131. The middle of the ball receiving pipe 4 is inclined from right to left, and the upper end of the left side of the ball receiving pipe 4 is connected to the first feeding pipe 11, and a screw conveyor is provided on the inner side of the ball receiving pipe 4 (not shown in the figure).

[0027] During operation, at the beginning, the steel balls and the materials to be ground are introduced into the ball mill 1 through the second feed pipe 13. After grinding by the ball mill 1, the ground materials and the steel balls are discharged from the discharge pipe 12. The materials and the steel balls enter the receiving barrel 30 together, and the steel balls are adsorbed and collected by the magnetic separation mechanism 31. The ground materials continue to descend through the buffer mechanism 32, and are discharged from the receiving barrel 30 through the discharge port 33 for collection. At the same time, the buffer mechanism 32 temporarily supports the steel balls that are not collected in time until the magnetic separation mechanism 31 adsorbs the steel balls. The adsorbed steel balls enter the interior of the magnetic separation mechanism 31 for surface cleaning, and then enter the ball receiving pipe 4. The cleaned steel balls are transported from the ball receiving pipe 4 to the first feed pipe 11 through a screw conveyor to facilitate the next round of grinding operations.

[0028] See also Figure 2 , Figure 3 and Figure 6The magnetic separation mechanism 31 includes a material dividing cone 311 fixedly connected to the inner wall of the material receiving barrel 30, the bottom end of the material dividing cone 311 is fixedly connected to a magnetic table 312, the arc surface of the magnetic table 312 is provided with a magnetic device, the bottom end of the magnetic table 312 is provided with a receiving groove, a collecting barrel 313 is rotatably connected in the receiving groove, and a plurality of scraping plates 314 are fixedly connected to the outer wall of the collecting barrel 313 circumferentially and passing through the inside of the collecting barrel 313. The scraping plates 314 are U-shaped structures, the side of the scraping plates 314 close to the magnetic table 312 is inclined to the other side of the scraping plates 314, and the outer side of the side plate of the scraping plates 314 close to the magnetic table 312 is arranged close to the arc outer wall of the magnetic table 312, and the inner wall of the other side of the scraping plates 314 is an arc-shaped structure in cross section.

[0029] Continue reading Figure 2 and Figure 4 The material buffer mechanism 32 includes a material dividing frame 321. An annular groove is provided at the bottom end of the upper cylindrical tube of the receiving tube 30. The material dividing frame 321 is connected to the annular groove through a spring 322. A vibration motor is provided at the upper end of the material dividing frame 321 and located in the annular groove. The bottom end of the material dividing frame 321 is a circular plate 323 structure with sieve holes, and the collecting tube 313 is movably arranged to penetrate the bottom end of the material dividing frame 321.

[0030] During operation, the ground material and steel balls are discharged from the discharge pipe 12 and enter the receiving barrel 30, where they will first contact the dividing cone 311. Under the action of the dividing cone 311, the ground material and steel balls will disperse and fall down and enter the upper end of the dividing frame 321. Under the action of the vibration motor, the dividing frame 321 will continue to vibrate in the receiving barrel 30 to facilitate the ground material to fall into the bottom end of the receiving barrel 30, while reducing the possibility of clogging of the circular plate 323 with sieve holes. Since the side of the magnetic table 312 is a magnetic structure, the steel balls will be adsorbed on the arc surface. When the scraper plate 314 rotates around the magnetic table 312, the scraper plate 314 will scrape the steel balls adsorbed on the surface of the magnetic table 312 into the U-shaped structure of the scraper plate 314. It should be noted here that the U-shaped structure is an isolation magnetic structure. The steel balls scraped into the scraper plate 314 will roll into the inside of the collecting barrel 313 along the side with an arc-shaped cross-section.

[0031] See also Figure 2 and Figure 5The middle of the material dividing rod 3132 is rotatably connected to a cylindrical rod 34, and the cylindrical rod 34 is arranged along the axial direction of the material receiving barrel 30. The cylindrical rod 34 is located at the position of the material receiving barrel 30 and has a plurality of buffer rods 35 staggered circumferentially arranged from top to bottom. The buffer rods 35 are composed of a plurality of rods of different lengths. The buffer rods 35 are staggered with hard materials and flexible materials, and the spacing between the buffer rods 35 of hard materials at the same height is greater than the diameter of the steel ball; a driving assembly 36 is arranged at the upper end of the cylindrical rod 34. The driving assembly 36 includes a rotating motor 361 fixedly connected to the upper end of the cylindrical rod 34, and the rotating motor 361 is fixedly connected to the receiving groove at the bottom end of the magnetic table 312. A driving gear 362 is fixedly connected to the cylindrical rod 34 near the upper end, and the driving gear 362 is meshedly connected to a connecting gear 363. The connecting shaft of the connecting gear 363 is rotatably connected to the receiving groove, and the connecting gear 363 is meshedly connected to an internal gear ring 364 arranged on the inner wall of the upper end of the collecting tube 313.

[0032] When working, the rotating motor 361 is started, which will drive the cylindrical rod 34 to rotate. The cylindrical rod 34 simultaneously drives the multiple buffer rods 35 to rotate in the collecting tube 313 to clean the surface of the steel balls that fall in. Since the buffer rods 35 are arranged in different lengths, the surfaces of the steel balls that fall at the same time can be cleaned at multiple angles. Moreover, the buffer rods 35 are staggered with hard materials and flexible materials. When the steel balls fall, they will be instantly blocked by the hard materials, and the adhesion on the surface of the steel balls will be improved. The ground material becomes loose after collision, and it is easier to fall off when the flexible material comes into contact; while the cylindrical rod 34 rotates, the driving gear 362 also rotates synchronously, the driving gear 362 engages with the connecting gear 363 to rotate, and the connecting gear 363 will drive the inner gear ring 364 to rotate, and then drive the collecting barrel 313 to rotate, and the collecting barrel 313 will rotate at a different speed from the cylindrical rod 34. When the collecting barrel 313 rotates, it will synchronously drive the scraper plate 314 to rotate, and the scraper plate 314 rotates around the surface of the magnetic table 312.

[0033] See also Figure 2 and Figure 5 The bottom end of the collecting barrel 313 is rotatably connected to a material distribution pipe 3131, which is composed of a cylindrical structure at the upper end and two symmetrical semi-cylindrical structures at the lower end. The two semi-cylindrical structures at the lower end of the material distribution pipe 3131 have a sieve plate 3133 structure with through holes on the opposite side, and the side away from the two semi-cylindrical structures is a semi-circular arc structure, and the inner wall of the semi-circular arc structure is fixedly connected to a plurality of arc-shaped balls. A material distribution rod 3132 is fixedly connected to the connection between the bottom end of the cylindrical structure and the two semi-cylindrical structures. Both semi-cylindrical structures are tilted from top to bottom away from the center. The bottom ends of the two semi-cylindrical structures penetrate the bottom end of the receiving barrel 30 and are fixedly connected to the bottom end of the receiving barrel 30.

[0034] During operation, the collecting barrel 313 rotates at the upper end of the distribution tube 3131, and the steel balls inside and the materials adhered to the surface of the steel balls will be scattered and fall into the distribution tube 3131. The two semi-cylindrical structures are arranged to slow down the falling speed of the falling materials so that they can pass through the sieve plate 3133 structure with through holes and enter the receiving barrel 30 for unified collection. The inner wall of the semi-circular arc structure is provided with a plurality of arc balls. When the steel balls touch the arc balls during the falling process, they will rebound onto the sieve plate 3133 structure, which will shake the sieve plate 3133 structure and facilitate the falling of the materials. After passing through the distribution tube 3131, the steel balls enter the ball receiving tube 4 to separate the steel balls from the ground materials and further clean the surface of the steel balls.

[0035] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, an integral connection, or a sliding connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A ball milling device, comprising a ball mill (1), characterized in that: A first feed pipe (11) is connected to the left side of the ball mill (1), and a discharge pipe (12) is connected to the right side of the ball mill (1). The first feed pipe (11) and the discharge pipe (12) are both rotatably connected to the ball mill (1). A second feed pipe (13) is connected to the upper end of the first feed pipe (11), and the ball mill (1) is rotatably arranged on the frame (2). The material processing device (3) comprises a material receiving barrel (30) connected to the lower end of the discharge pipe (12), the material receiving barrel (30) being composed of two upper and lower cylindrical barrels connected to each other and having different diameters, the lower cylindrical barrel being fixedly connected to the outer wall of the upper cylindrical barrel, a magnetic separation mechanism (31) and a material slowing mechanism (32) being arranged in the material receiving barrel (30), and a discharge port (33) being arranged at the lower end of the side wall of the material receiving barrel (30); A magnetic separation mechanism (31) is arranged below the discharge pipe (12) and performs magnetic separation on the steel balls; The material retarding mechanism (32) is arranged below the magnetic separation mechanism (31) to separate the ground material and to temporarily support the steel balls; The magnetic separation mechanism (31) comprises a material distribution cone (311) fixedly connected to the inner wall of the material receiving barrel (30), the bottom end of the material distribution cone (311) is fixedly connected to a magnetic platform (312), the arc surface of the magnetic platform (312) is provided with a magnetic device, the bottom end of the magnetic platform (312) is provided with a receiving groove, a collecting barrel (313) is rotatably connected in the receiving groove, and a plurality of scraping plates (314) are fixedly connected to the outer wall of the collecting barrel (313) in a circumferential direction and passing through the interior of the collecting barrel (313); The bottom end of the collecting barrel (313) is rotatably connected to a material distribution pipe (3131), which is composed of a cylindrical structure at the upper end and two symmetrical semi-cylindrical structures at the lower end. A material distribution rod (3132) is fixedly connected to the connection between the bottom end of the cylindrical structure and the two semi-cylindrical structures. The two semi-cylindrical structures are both inclined from top to bottom away from the center. The bottom ends of the two semi-cylinders penetrate the bottom end of the receiving barrel (30) and are fixedly connected to the bottom end of the receiving barrel (30). The middle of the material distribution rod (3132) is rotatably connected to a cylindrical rod (34), which is arranged along the axial direction of the material receiving barrel (30). The cylindrical rod (34) is located at the position of the material receiving barrel (30) and has a plurality of buffer rods (35) staggered circumferentially arranged from top to bottom. The upper end of the cylindrical rod (34) is provided with a driving assembly (36); The buffer rod (35) is composed of a plurality of rods of different lengths. The buffer rods (35) are staggeredly arranged with hard materials and flexible materials. The spacing between the buffer rods (35) of hard materials at the same height is greater than the diameter of the steel ball. The two semi-cylindrical structures at the lower end of the material distribution pipe (3131) have a sieve plate (3133) structure with through holes on one side opposite to the other, and a semi-arc structure on the other side away from the two semi-cylindrical structures, and a plurality of arc-shaped balls are fixedly connected to the inner wall of the semi-arc structure; The material slowing mechanism (32) comprises a material distribution frame (321), the bottom end of the upper cylindrical tube of the material receiving tube (30) is provided with an annular groove, the material distribution frame (321) is connected to the annular groove through a spring (322), a vibration motor is arranged at the upper end of the material distribution frame (321) and located in the annular groove, the bottom end of the material distribution frame (321) is a circular plate (323) structure with sieve holes, and the collecting tube (313) is movably arranged to penetrate the bottom end of the material distribution frame (321).

2. A ball milling device according to claim 1, characterized in that: The driving assembly (36) comprises a rotating motor (361) fixedly connected to the upper end of the cylindrical rod (34); the rotating motor (361) is fixedly connected to a receiving groove at the bottom end of the magnetic table (312); a driving gear (362) is fixedly connected to the cylindrical rod (34) near the upper end; the driving gear (362) is meshedly connected to a connecting gear (363); a connecting shaft of the connecting gear (363) is rotatably connected to the receiving groove; and the connecting gear (363) is meshedly connected to an internal gear ring (364) provided on the inner wall of the upper end of the collecting tube (313).

3. A ball milling device according to claim 1, characterized in that: The scraper plate (314) is of a U-shaped structure. The side of the scraper plate (314) close to the magnetic platform (312) is arranged to be inclined toward the other side of the scraper plate (314). The outer side of the side plate of the scraper plate (314) close to the magnetic platform (312) is arranged close to the arc-shaped outer wall of the magnetic platform (312). The inner wall of the other side of the scraper plate (314) is of an arc-shaped structure in cross section.

4. A ball milling device according to claim 1, characterized in that: It also includes a fixed seat (21) arranged at the bottom end of the frame (2), the outer wall of the material receiving barrel (30) is fixedly connected to the right side of the fixed seat (21), the bottom end of the material receiving barrel (30) is fixedly connected to a ball receiving pipe (4), the right side of the ball receiving pipe (4) is connected to the bottom end of the material distribution pipe (3131), the middle of the ball receiving pipe (4) is inclined from right to left, the upper end of the left side of the ball receiving pipe (4) is connected to the first feeding pipe (11), and a screw conveyor is arranged on the inner side of the ball receiving pipe (4).

Images