Ball feeding device of ball mill

Abstract

The utility model discloses a ball feeding device of a ball mill, which relates to the technical field of ball mills and comprises a bottom plate, a ball milling structure, bearing supports, a grinding cylinder suspended between the bearing supports, mounting shafts fixedly arranged at two ends of the grinding cylinder, a grinding motor positioned on one side of the bearing supports, and a material pipe mounted in the grinding cylinder in a penetrating manner, the material screening structure comprises a mounting frame, a supporting frame fixedly arranged below the mounting frame and at the upper end of the bottom plate, a screen fixedly arranged in the mounting frame and a vibration motor located below the mounting frame; the lifting structure comprises a lifting motor, a bearing box located on one side of the lifting motor, a screw located at the output end of the lifting motor and a nut located on the outer wall of one side of the bearing box. According to the automatic ball feeding device, the screening structure and the lifting structure are utilized, the problems that after raw materials are ground, grinding balls need to be manually separated, cleaned and added, in the process, the balls cannot be cleaned thoroughly, and the labor intensity is large are solved, and automatic separation and ball feeding of the grinding balls are achieved.

Description

Technical Field

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

[0002] A ball mill is a device used to grind solid materials into powder or particles. It usually consists of a rotating container with grinding media, such as steel balls, in which the raw materials are ground by the rotation of the container and the friction of the grinding media. The ground raw materials are discharged together with the grinding media, and the grinding balls need to be screened before they can be used again.

[0003] A Chinese patent discloses a ball mill (authorization announcement number CN209156002U), which includes a ball mill tank and a frame. The ball mill tank is a hollow cylindrical structure, one end of the ball mill tank is closed, and the other end is provided with a feed port, and the feed port is provided with a sealing end cover; the frame is provided with two driving rollers for placing the ball mill tank, the driving rollers are in an inclined state, one side of the frame is provided with a base, one end of the driving roller is fixed on the side wall of the base, and the top of the base is provided with a positioning mechanism for tightening with the closed end of the ball mill tank. The utility model drives the driving roller to rotate through a motor, and the two driving rollers drive the ball mill tank to rotate and support it. Since the driving roller is inclined and cooperates with the positioning mechanism to limit the ball mill tank, it is ensured that when the ball mill tank rotates, it will not be displaced along the axial direction of the driving roller. The structure is simple and the installation and disassembly are very convenient.

[0004] This patented technology has the advantage of convenient disassembly and assembly when used, but it still has some shortcomings after use. After the raw materials are ground, they are discharged together with the grinding balls and mixed with the raw materials. They need to be screened out before loading. The following problems exist in this process: 1. The efficiency of manual separation of grinding balls and raw materials is low, and the raw materials adhered to the outer wall of the grinding balls are not easy to clean. When grinding different raw materials, the raw materials adhered to the grinding body are prone to cross infection; 2. The separated raw materials need to be re-added to the grinding equipment by the staff, which increases the labor cost. Therefore, the technical personnel in this field provide a ball mill adding device to solve the problems raised in the above background technology. Utility Model Content

[0005] The purpose of the utility model is to provide a ball adding device for a ball mill to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the utility model provides a ball mill adding device, comprising a bottom plate,

[0007] The ball mill structure includes bearing brackets fixedly mounted on the upper end of the bottom plate and symmetrically distributed, a grinding cylinder suspended between the bearing brackets, mounting shafts fixedly mounted on both ends of the grinding cylinder, a grinding motor located on one side of the bearing bracket and rotatably mounted with the mounting shaft, and a material pipe penetrating and mounted inside the upper and lower ends of the grinding cylinder;

[0008] The screening structure includes a mounting frame located below the grinding cylinder, a support frame fixed below the mounting frame and above the bottom plate, a screen fixed inside the mounting frame, and a vibration motor located below the mounting frame;

[0009] as well as;

[0010] The lifting structure includes a lifting motor fixed on the upper end of the bottom plate, a receiving box located on one side of the lifting motor, a screw located at the output end of the lifting motor, and a nut located on the outer wall of one side of the receiving box and rotatably sleeved on the outer wall of the screw.

[0011] Furthermore, a collecting trough is provided at the upper end of the bottom plate, and the collecting trough is located directly below the mounting frame and the supporting frame;

[0012] Specifically, the collecting tank collects the raw materials discharged after grinding.

[0013] Furthermore, one end of the installation shaft is rotatably inserted into the bearing bracket, and a control valve is provided inside the material pipe;

[0014] Specifically, the mounting shaft rotates inside the bearing bracket to rotationally support the grinding cylinder, and the control valve controls the opening and closing of the material pipe.

[0015] Furthermore, a hopper is provided at one end of the material pipe, and a guide surface is provided on the inner wall of the grinding cylinder, and the lower part of the guide surface is inclined toward the center of the grinding cylinder;

[0016] Specifically, the opening diameter of the material hopper lifting material pipe is convenient for receiving the input grinding balls, and when the grinding cylinder is discharged, the material flows through the guide surface to the material pipe with the opening facing downward.

[0017] Furthermore, the upper end of the support frame is provided with springs which are equidistantly distributed and connected to the mounting frame at the upper end, and the upper end of the vibration motor is provided with a fixing plate, which is fixedly placed at the lower end of the mounting frame;

[0018] Specifically, the mounting frame is elastically mounted on the supporting frame through a spring, and the vibration motor is fixed through a fixing plate.

[0019] Furthermore, the screen is inclined, a volleyball opening is provided at one end of the installation frame, and the lower part of the inclined surface of the screen faces the volleyball opening;

[0020] Specifically, during the screening process of the raw materials, the intercepted grinding balls flow to a lower position and converge, and are discharged through the discharge port.

[0021] Furthermore, a fixing frame is provided at the upper end of the bottom plate, guide rails are provided at the front and rear sides of the lower end of the fixing frame, sliders are provided at the front and rear ends of the receiving box and are slidably installed inside the guide rails, and the upper end of the screw rod is rotatably installed on the inner wall of the upper end of the fixing frame;

[0022] Specifically, the receiving box is longitudinally slidably guided by the slider, and the upper end is rotationally supported when the screw is rotated.

[0023] Furthermore, a valve tube is provided at the lower end of the receiving box, and a transfer groove corresponding to the material tube at the output end is provided on one side above the grinding cylinder, and the valve tube and the transfer groove are both inclined, and the lower part of the inclined surface of the valve tube corresponds to the transfer groove;

[0024] Specifically, the valve tube guides the grinding balls inside the receiving box and controls its opening and closing through the internal valve. When opened, the grinding balls can flow by themselves, and are received by the transfer trough and then transported to the feeding pipe.

[0025] Compared with the prior art, the utility model has the following beneficial effects: the ball mill rotates under the driving of the grinding motor, the grinding body rotates and the grinding medium rubs to grind the raw materials, which are then transported to the grinding cylinder after grinding, the screen inside the screening structure screens the raw materials, and the grinding balls are intercepted, and the screen in the screening structure is shaken by the cooperation of the vibration motor and the spring when in use, and the raw materials adhered to the outer wall of the grinding ball are separated during the shaking process, so that the raw materials adhered to the grinding ball are avoided, which is easy to cause cross infection when grinding different raw materials;

[0026] At the same time, the separated and cleaned grinding bodies are guided into the receiving box, which is lifted by the lifting structure. After being lifted to the specified height, they are guided into the grinding cylinder through the transfer trough, thus avoiding manual loading and manual separation and cleaning of the grinding balls. The whole process is automated, reducing manual intervention and the labor intensity of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic diagram of a three-dimensional structure, a schematic diagram of a main three-dimensional structure;

[0028] Figure 2 is a schematic diagram of a three-dimensional structure, a schematic diagram of a three-dimensional structure viewed from above;

[0029] Figure 3 Schematic diagram of the three-dimensional structure: a schematic diagram of the main cross-sectional view of the ball mill structure;

[0030] Figure 4 It is a three-dimensional structural schematic diagram of the main section of the screening material structure from an upward perspective;

[0031] Figure 5 The three-dimensional structure schematic diagram enhances the local main view of the structure.

[0032] In the figure:

[0033] 100, bottom plate; 101, collecting tank;

[0034] 200, ball mill structure; 201, bearing bracket; 202, grinding cylinder; 203, grinding motor; 204, mounting shaft; 205, flow guide surface; 206, material pipe; 207, control valve; 208, hopper;

[0035] 300, screening material structure; 301, mounting frame; 302, screening mesh; 303, volleyball opening; 304, fixing plate; 305, vibration motor; 306, spring; 307, supporting frame;

[0036] 400, lifting structure; 401, transfer trough; 402, lifting motor; 403, nut; 404, fixing frame; 405, screw rod; 406, receiving box; 407, guide rail; 408, valve pipe. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] See also Figure 1-5 , the utility model provides a technical solution:

[0039] See also Figure 1-Figure 4 As shown, a ball mill ball adding device comprises a bottom plate 100,

[0040] The ball mill structure 200 includes bearing brackets 201 fixedly mounted on the upper end of the bottom plate 100 and symmetrically distributed, a grinding cylinder 202 suspended between the bearing brackets 201, mounting shafts 204 fixedly mounted at both ends of the grinding cylinder 202, a grinding motor 203 located on one side of the bearing bracket 201 and rotatably mounted with the mounting shaft 204, and a material pipe 206 penetrating and mounted inside the upper and lower ends of the grinding cylinder 202;

[0041] The screening structure 300 includes a mounting frame 301 located below the grinding cylinder 202, a support frame 307 fixed below the mounting frame 301 and above the bottom plate 100, a screen 302 fixed inside the mounting frame 301, and a vibration motor 305 located below the mounting frame 301;

[0042] A collecting tank 101 is disposed at the upper end of the bottom plate 100 , and the collecting tank 101 is located directly below the mounting frame 301 and the supporting frame 307 ;

[0043] One end of the mounting shaft 204 is rotatably inserted into the bearing bracket 201, and a control valve 207 is provided inside the material pipe 206;

[0044] A hopper 208 is disposed at one end of the material pipe 206, and a guide surface 205 is disposed on the inner wall of the grinding cylinder 202, with the lower slope of the guide surface 205 facing the center of the grinding cylinder 202;

[0045] The upper end of the support frame 307 is provided with springs 306 which are equidistantly distributed and connected to the mounting frame 301 at the upper end, and the upper end of the vibration motor 305 is provided with a fixing plate 304 which is fixed to the lower end of the mounting frame 301;

[0046] The screen 302 is inclined, and a volleyball opening 303 is provided at one end of the mounting frame 301, and the lower part of the inclined surface of the screen 302 faces the volleyball opening 303;

[0047] In this embodiment, when the grinding balls rotate inside the grinding cylinder 202, the raw materials are ground under the action of friction and impact. The ground raw materials are easily adjusted for feeding through two material pipes 206, and the grinding balls are screened through the screening structure 300 after feeding, thereby realizing the separation of the ground raw materials and the balls. During the separation process, the screen 302 vibrates, and the raw materials adhered to the balls are shaken off, thereby avoiding manual screening and cleaning of the balls. The automated screening and cleaning reduce the workload of the staff, and improve the hygiene and safety of the grinding process by avoiding the adhesion of raw materials and reducing the problem of cross infection, thereby improving the hygiene and safety of the grinding process when grinding different raw materials.

[0048] See also Figure 1-Figure 5 ,

[0049] as well as;

[0050] The lifting structure 400 includes a lifting motor 402 fixed on the upper end of the base plate 100, a receiving box 406 located on one side of the lifting motor 402, a screw rod 405 located at the output end of the lifting motor 402, and a nut 403 located on the outer wall of one side of the receiving box 406 and rotatably sleeved on the outer wall of the screw rod 405.

[0051] A fixing frame 404 is disposed at the upper end of the bottom plate 100, and guide rails 407 are disposed at both the front and rear sides of the lower end of the fixing frame 404. Sliders slidably mounted inside the guide rails 407 are disposed at both the front and rear ends of the receiving box 406, and the upper end of the screw rod 405 is rotatably mounted on the inner wall of the upper end of the fixing frame 404;

[0052] A valve tube 408 is provided at the lower end of the receiving box 406, and a transfer groove 401 corresponding to the material tube 206 at the output end is provided on one side above the grinding cylinder 202. The valve tube 408 and the transfer groove 401 are both inclined, and the lower part of the inclined surface of the valve tube 408 corresponds to the transfer groove 401;

[0053] In this embodiment, the grinding balls after screening and cleaning are collected by receiving box 406. After receiving box 406 is lifted to a specified height, it is transported to the interior of transfer trough 401, so that the balls slide into material tube 206 with an opening facing upward and enter grinding cylinder 202, thereby realizing automatic adding of grinding balls. The cleaned grinding bodies can be redirected to grinding cylinder 202 for use, thereby realizing automatic recycling and reuse of grinding balls, avoiding manual loading, automatic lifting, reducing the workload of staff, reducing manual intervention, and reducing the probability of errors in the grinding process.

[0054] Working principle:

[0055] The raw material and the grinding balls are transported to the grinding cylinder 202 through the material pipe 206, and then the control valve 207 closes the material pipe 206, the grinding motor 203 operates, drives the mounting shaft 204 to rotate, and the mounting shaft 204 drives the grinding cylinder 202 to rotate. During the rotation process, the grinding balls impact the raw material, and the raw material and the grinding balls rub against each other, and the particle size of the raw material becomes smaller. After the raw material is ground, one of the material pipes 206 opens downward, and the control valve 207 is opened, and the raw material and the grinding balls are discharged;

[0056] The raw material falls onto the screen 302 and falls through the pores of the screen 302. The grinding balls are too large to pass through the screen 302 and are intercepted. The raw material flows through the inclined surface of the screen 302. The vibration motor 305 operates. While the rotors at both ends rotate to generate a swinging force, the spring 306 is driven to vibrate, causing the mounting frame 301 to vibrate and the balls inside the screen 302 to jump. The raw material passes more smoothly when the raw material vibrates, and the raw material adhered to the outer wall of the grinding ball is detached when the raw material vibrates.

[0057] The grinding balls are transported to the inside of the receiving box 406 through the ball discharge port 303, and the lifting motor 402 is in operation. Because the receiving box 406 is guided by the guide rail 407 through the slider, the screw 405 pushes the nut 403, driving the receiving box 406 to be lifted to a specified height position. The valve tube 408 is located on one side above the receiving groove. The valve tube 408 is opened, and flows through the inclined surface to the inside of the transfer groove 401, slides through the transfer groove 401 to the inside of the material pipe 206, and is then transported to the grinding cylinder 202.

Claims

1. A ball mill adding device, characterized in that: comprising a bottom plate (100), The ball mill structure (200) comprises a bearing bracket (201) fixedly mounted on the upper end of the bottom plate (100) and symmetrically distributed, a grinding cylinder (202) suspended between the bearing brackets (201), a mounting shaft (204) fixedly mounted at both ends of the grinding cylinder (202), a grinding motor (203) located on one side of the bearing bracket (201) and rotatably mounted with the mounting shaft (204), and a material pipe (206) penetrating and mounted inside the upper and lower ends of the grinding cylinder (202); The screening material structure (300) comprises a mounting frame (301) located below the grinding cylinder (202), a support frame (307) fixed below the mounting frame (301) and above the bottom of the bottom plate (100), a screening mesh (302) fixed inside the mounting frame (301), and a vibration motor (305) located below the mounting frame (301); as well as; The lifting structure (400) includes a lifting motor (402) fixedly mounted on the upper end of the base plate (100), a receiving box (406) located on one side of the lifting motor (402), a screw rod (405) located at the output end of the lifting motor (402), and a nut (403) located on the outer wall of one side of the receiving box (406) and rotatably sleeved on the outer wall of the screw rod (405).

2. A ball mill adding device as claimed in claim 1, characterized in that: A collecting trough (101) is provided at the upper end of the bottom plate (100), and the collecting trough (101) is located directly below the installation frame (301) and the support frame (307).

3. A ball mill adding device as claimed in claim 1, characterized in that: One end of the installation shaft (204) is rotatably inserted into the interior of the bearing bracket (201), and a control valve (207) is arranged inside the material pipe (206).

4. A ball mill adding device as claimed in claim 1, characterized in that: A hopper (208) is provided at one end of the material pipe (206), and a guide surface (205) is provided on the inner wall of the grinding cylinder (202), wherein the lower part of the guide surface (205) faces the center of the grinding cylinder (202).

5. A ball mill adding device as claimed in claim 1, characterized in that: The upper end of the support frame (307) is provided with springs (306) which are equidistantly distributed and connected to the installation frame (301) at the upper end, and the upper end of the vibration motor (305) is provided with a fixing plate (304), and the fixing plate (304) is fixedly placed on the lower end of the installation frame (301).

6. A ball mill adding device as claimed in claim 1, characterized in that: The screen (302) is inclined, a ball-volleying opening (303) is provided at one end of the installation frame (301), and the lower part of the inclined surface of the screen (302) faces the ball-volleying opening (303).

7. A ball mill adding device as claimed in claim 1, characterized in that: A fixing frame (404) is arranged at the upper end of the bottom plate (100), guide rails (407) are arranged at the front and rear sides of the lower end of the fixing frame (404), and sliders slidably mounted inside the guide rails (407) are arranged at the front and rear ends of the receiving box (406), and the upper end of the screw rod (405) is rotatably mounted on the inner wall of the upper end of the fixing frame (404).

8. A ball mill adding device as claimed in claim 1, characterized in that: A valve tube (408) is provided at the lower end of the receiving box (406), and a transfer groove (401) corresponding to the material tube (206) at the output end is provided on the upper side of the grinding cylinder (202). The valve tube (408) and the transfer groove (401) are both inclined, and the lower part of the inclined surface of the valve tube (408) corresponds to the transfer groove (401).

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