Automatic adding device for grinding medium of ore grinding machine

Abstract

The utility model relates to the technical field of mining machinery, and discloses an automatic grinding medium adding device of an ore grinding machine, which comprises a plurality of ball storage components for storing grinding balls with different sizes and a lifting component for lifting the grinding balls. By arranging the ball storage assembly, the rotating angle of the stepping motor can be controlled, then the ball outlet amount is controlled, and after the grinding balls are discharged, other grinding balls contained in a ball storage barrel can be automatically filled and fall into a ball storage groove; meanwhile, the grinding balls are cleaned through the cleaning brush, and it is guaranteed that the surfaces of the grinding balls are clean; by arranging the non-slip mat, when the ball distributing frame rotates, the grinding balls can rotate in the vertical direction due to friction force between the grinding balls and the non-slip mat, and the cleaning range of the cleaning brush is further widened and the cleaning effect is improved in cooperation with rotation in the horizontal direction; by arranging the lifting assembly, the discharged grinding balls can be lifted and transported in sequence; in the lifting period, due to limiting of the conveying claw plates, the grinding balls can be effectively prevented from sliding off.

Description

Technical Field

[0001] The utility model relates to the technical field of mining machinery, in particular to an automatic adding device for grinding media of a grinding mill. Background Art

[0002] The particle size composition of the grinding product of the ore dressing plant is the precondition of flotation, which directly affects the flotation efficiency and flotation index, and the filling rate and gradation of the grinding media in the mill are the key factors that directly affect the particle size composition of the grinding product. Therefore, in the actual production process of the ore dressing plant, as the grinding media in the mill is consumed, it is necessary to regularly and quantitatively replenish the grinding media of specific specifications and models, and sometimes it is also necessary to adjust the filling rate and gradation of the grinding media in the mill according to the changes in the properties of the original ore.

[0003] In the existing process, grinding balls are usually added by manual counting, which is prone to confusion. Since the addition port of the mill is usually set at the top, it is also necessary for personnel to carry it manually, resulting in a high labor intensity. In addition, some grinding balls may have impurities attached to their surface. If they are added directly, they will be mixed with the ore in the subsequent work process, affecting its quality. Therefore, they need to be cleaned when adding. Utility Model Content

[0004] The utility model aims to provide an automatic adding device for grinding media of a grinding mill, so as to solve the problems that counting confusion and impurities on the surface of grinding balls are easy to occur when adding balls manually.

[0005] The utility model is realized through the following technical scheme: an automatic grinding medium adding device for a grinding mill comprises a plurality of ball storage components for storing grinding balls of different sizes and a lifting component for lifting the grinding balls.

[0006] The ball storage assembly includes a ball storage barrel, which is rotatably connected to a ball distribution rack, and the ball distribution rack is connected to the ball storage barrel through a stepping motor installed on the ball storage barrel. The outer wall of the ball distribution rack fits the inner wall of the ball storage barrel, and the ball distribution rack is provided with a plurality of ball storage slots, and the ball storage slots are provided with limit strips; the ball distribution rack is rotatably connected to a plurality of cleaning brushes, and movable gears are installed on the cleaning brushes, and a fixed gear is installed on the ball storage barrel, and the fixed gear is meshed with the movable gear; a filter plate is installed on the ball storage barrel, and a ball outlet hole is provided on the side wall of the ball storage barrel, and a ball baffle plate is provided at a position corresponding to the ball outlet hole.

[0007] In order to better realize the utility model, further, a slag discharge valve is provided on the side wall of the ball storage barrel.

[0008] In order to better implement the utility model, further, the filter plate is arranged with a tilted surface in contact with the grinding balls.

[0009] To better implement the present utility model, further, an anti-slip pad is coated on the filter plate, and the anti-slip pad is made of any one of rubber, plastic, and silica gel.

[0010] To better implement the present utility model, further, a conical plate is installed on the ball distribution rack.

[0011] To better implement the present utility model, further, the lifting assembly includes a grinding ball slideway, which is connected to the ball outlet holes on multiple ball storage barrels, and a limiting claw plate is arranged on the grinding ball slideway; the lifting assembly further includes a bracket, on which a slide rail, a servo motor, and a sprocket are arranged. The servo motor is in transmission connection with one sprocket, a chain is sleeved on the two sprockets, a sliding frame is slidably connected to the slide rail, a transport claw plate is slidably connected to the sliding frame, the transport claw plate is rotatably connected to the chain, and the transport claw plate forms a cooperation with the limiting claw plate; an adding slideway is installed on the servo motor, and a limiting claw plate is arranged on the adding slideway.

[0012] Compared with the prior art, the present utility model has the following advantages and beneficial effects:

[0013] (1) By setting the ball storage assembly, the present utility model can control the rotation angle of the stepping motor, thereby controlling the ball discharge amount. After the grinding balls are discharged, the remaining grinding balls in the ball storage barrel will automatically fill the position and fall into the ball storage groove; at the same time, the grinding balls are cleaned by the cleaning brush to ensure the cleanliness of the surface of the grinding balls.

[0014] (2) By setting the anti-slip pad, when the ball distribution rack rotates, the grinding balls will generate a vertical rotation due to the friction with the anti-slip pad, cooperating with the horizontal rotation, so as to further strengthen the cleaning range of the cleaning brush and improve the cleaning effect.

[0015] (3) By setting the lifting assembly, the present utility model can sequentially lift and transport the discharged grinding balls and then perform the adding operation, reducing the labor intensity of personnel; during the lifting process, due to the limitation of the transport claw plate, the grinding balls can be effectively prevented from slipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0017] Figure 2 It is a cross-sectional view of the structure of the ball storage assembly.

[0018] Figure 3 It is a schematic diagram of the structure of the ball distribution rack.

[0019] Figure 4 It is a schematic diagram of the structure of the fixed gear, movable gear, and cleaning brush.

[0020] Figure 5It is a schematic diagram of the filter plate and cleaning brush structure.

[0021] Figure 6 It is Figure 2 a partial enlarged schematic diagram at position A in

[0022] Figure 7 It is a schematic diagram of the lifting component structure.

[0023] Figure 8 It is a partial structure schematic diagram of the lifting component.

[0024] Among them: 1 - ball storage component; 2 - lifting component; 101 - ball storage barrel; 102 - stepping motor; 103 - conical plate; 104 - ball dividing frame; 105 - ball blocking plate; 106 - filter plate; 107 - limiting strip; 108 - fixed gear; 109 - movable gear; 110 - cleaning brush; 111 - slag discharge valve; 201 - grinding ball slideway; 202 - limiting claw plate; 203 - transport claw plate; 204 - sliding frame; 205 - slide rail; 206 - servo motor; 207 - chain; 208 - adding slideway; 209 - bracket; 210 - sprocket. Specific implementation manners

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] Embodiment 1:

[0027] This embodiment provides an automatic grinding medium adding device for a grinding mill, specifically as Figures 1-6 shown, including a plurality of ball storage components 1 for storing grinding balls of different sizes and a lifting component 2 for lifting the grinding balls.

[0028] The ball storage component 1 includes a ball storage barrel 101, a ball dividing frame 104 is rotatably connected to the ball storage barrel 101, the ball dividing frame 104 is in transmission connection with a stepping motor 102 installed on the ball storage barrel 101, the outer wall of the ball dividing frame 104 is attached to the inner wall of the ball storage barrel 101, a plurality of ball storage grooves are provided on the ball dividing frame 104, and limiting strips 107 are provided on the ball storage grooves; a plurality of cleaning brushes 110 are rotatably connected to the ball dividing frame 104, a movable gear 109 is fixedly installed on the cleaning brush 110, a fixed gear 108 is fixedly installed on the ball storage barrel 101, and the fixed gear 108 is engaged with the movable gear 109; a filter plate 106 is fixedly installed on the ball storage barrel 101, a ball outlet hole is opened on the side wall of the ball storage barrel 101, and a ball blocking plate 105 is provided at a position corresponding to the ball outlet hole.

[0029] Add grinding balls of multiple different specifications into different ball storage barrels 101 respectively. After that, some grinding balls fall into the ball storage grooves. When a certain amount of grinding balls need to be discharged, drive the stepping motor 102 to rotate. At this time, the ball distribution rack 104 will start to rotate self - clockwise, and at the same time drive multiple cleaning brushes 110 to rotate around the center. Since the movable gear 109 meshes with the fixed gear 108, the movable gear 109 starts to drive the cleaning brush 110 to rotate self - clockwise. The grinding balls in the ball storage grooves are restricted by the inner wall of the ball storage barrel 101, the limiting strips 107, and the cleaning brushes 110 and cannot move horizontally. Therefore, when the cleaning brush 110 rotates self - clockwise, the cleaning brush 110 starts to clean the grinding balls. At the same time, the force exerted by the cleaning brush 110 on the grinding balls causes the grinding balls to rotate self - clockwise in the horizontal direction. The impurities cleaned from the surface of the grinding balls fall to the bottom of the ball storage barrel 101 through the through - holes on the filter plate 106. When the grinding balls follow the ball distribution rack 104 and rotate to the ball outlet, due to the loss of the restriction of the inner wall of the ball storage barrel 101, under the action of centrifugal force, the cleaned grinding balls are discharged from the ball storage barrel 101.

[0030] Through the above settings, the rotation angle of the stepping motor 102 can be controlled, thereby controlling the amount of balls discharged. After the grinding balls are discharged, the remaining grinding balls contained in the ball storage barrel 101 will automatically fill the position and fall into the ball storage grooves; at the same time, the cleaning brush 110 is used to clean the grinding balls to ensure that the surface of the grinding balls is clean.

[0031] Embodiment 2:

[0032] This embodiment is further extended on the basis of Embodiment 1, specifically as Figure 6 shown, a slag discharge valve 111 is provided on the side wall of the ball storage barrel 101.

[0033] After using for a period of time, opening the slag discharge valve 111 can facilitate the cleaning of the impurities accumulated at the bottom of the ball storage barrel 101.

[0034] As Figure 6 shown, the surface of the filter plate 106 in contact with the grinding balls is inclined.

[0035] Through the inclined setting of the surface of the filter plate 106, when the grinding balls are discharged, they are not only affected by the centrifugal force but also by the gravity, which can accelerate the discharge speed of the grinding balls.

[0036] An anti - slip pad is coated on the filter plate 106, and the anti - slip pad is made of any one of rubber, plastic, and silica gel.

[0037] By setting the anti - slip pad, when the ball distribution rack 104 rotates self - clockwise, it will rotate self - clockwise in the vertical direction due to the friction with the anti - slip pad, cooperating with the self - rotation in the horizontal direction, thereby further strengthening the cleaning range of the cleaning brush 110 and improving the cleaning effect.

[0038] As Figure 2As shown, a conical plate 103 is installed on the ball distributing rack 104.

[0039] By providing the conical plate 103, the grinding balls in the ball storage barrel 101 can be scattered into the surrounding ball storage grooves under the action of gravity, preventing individual grinding balls from being unable to be discharged.

[0040] Embodiment 3:

[0041] This embodiment is further extended on the basis of Embodiment 1 and Embodiment 2. Specifically, Figures 7-8 the lifting assembly 2 includes a grinding ball slideway 201 which is inclined. The grinding ball slideway 201 is connected to the ball outlet holes on a plurality of ball storage barrels 101, and a limiting claw plate 202 is arranged on the grinding ball slideway 201; the lifting assembly 2 further includes a bracket 209, on which a slide rail 205, a servo motor 206 and a sprocket 210 are arranged. The sprocket 210 is rotatably connected to the bracket 209, the servo motor 206 is drivingly connected to one sprocket 210, a chain 207 is sleeved on the two sprockets 210, a sliding frame 204 is slidably connected to the slide rail 205, a transport claw plate 203 is slidably connected to the sliding frame 204, the transport claw plate 203 is rotatably connected to the chain 207, and the transport claw plate 203 cooperates with the limiting claw plate 202; an adding slideway 208 is installed on the servo motor 206, and a limiting claw plate 202 is arranged on the adding slideway 208.

[0042] After the grinding balls are discharged from the ball outlet holes on the ball storage barrel 101 onto the grinding ball slideway 201, due to the inclined arrangement of the grinding ball slideway 201, the grinding balls finally gather at the limiting claw plate 202; start the servo motor 206, at this time the sprocket 210 and the chain 207 start to operate, the chain 207 drives the transport claw plate 203 and the sliding frame 204 to move upward. The transport claw plate 203 picks up the grinding balls from below the limiting claw plate 202 on the grinding ball slideway 201 and then moves upward. When approaching the top, the chain 207 drives the transport claw plate 203 to slide horizontally along the sliding frame 204. Then the transport claw plate 203 and the sliding frame 204 start to move downward. At this time, the transport claw plate 203 places the grinding balls on the adding slideway 208 from above the limiting claw plate 202 on the adding slideway 208. Subsequently, the grinding balls roll to the grinding ball adding position on the grinding mill through the adding slideway 208, while the transport claw plate 203 and the sliding frame 204 continue to move downward. When approaching the bottom, the chain 207 drives the transport claw plate 203 to slide horizontally in the reverse direction along the sliding frame 204. Then the transport claw plate 203 and the sliding frame 204 start to move upward and continue to pick up the grinding balls, and so on in a cycle.

[0043] By setting up a lifting component, the discharged grinding balls can be lifted and transported in sequence, and then the addition operation can be carried out, without manual handling, reducing the labor intensity of personnel; during the lifting process, due to the limitation of the transportation claw plate, the grinding balls can be effectively prevented from slipping.

[0044] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Any simple modification or equivalent change made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. An automatic adding device for grinding media of a grinding mill, characterized in that: It comprises a plurality of ball storage assemblies (1) for storing grinding balls of different sizes and a lifting assembly (2) for lifting the grinding balls; The ball storage assembly (1) comprises a ball storage barrel (101), the ball storage barrel (101) is rotatably connected to a ball distribution rack (104), the ball distribution rack (104) and the ball storage barrel (101) are connected to each other by a stepping motor (102) installed on the ball storage barrel (101), the outer wall of the ball distribution rack (104) is in contact with the inner wall of the ball storage barrel (101), a plurality of ball storage slots are arranged on the ball distribution rack (104), and a limit strip (107) is arranged on the ball storage slots; a plurality of cleaning brushes (110) are rotatably connected to the ball distribution rack (104), a movable gear (109) is installed on the cleaning brush (110), a fixed gear (108) is installed on the ball storage barrel (101), and the fixed gear (108) is meshed with the movable gear (109); a filter plate (106) is installed on the ball storage barrel (101), a ball outlet hole is provided on the side wall of the ball storage barrel (101), and a ball blocking plate (105) is arranged at a position corresponding to the ball outlet hole.

2. The automatic adding device for grinding media of a grinding mill according to claim 1, characterized in that: A slag discharge valve (111) is provided on the side wall of the ball storage barrel (101).

3. The automatic adding device for grinding media of a grinding mill according to claim 1, characterized in that: The filter plate (106) is arranged to be inclined on one side in contact with the grinding balls.

4. The automatic adding device for grinding media of a grinding mill according to claim 1, characterized in that: The filter plate (106) is covered with an anti-skid pad, and the material of the anti-skid pad is any one of rubber, plastic, and silica gel.

5. The automatic adding device for grinding media of a grinding mill according to claim 1, characterized in that: A conical plate (103) is mounted on the ball distribution rack (104).

6. The automatic adding device for grinding media of a grinding mill according to any one of claims 1 to 5, characterized in that: The lifting assembly (2) comprises a grinding ball slideway (201), the grinding ball slideway (201) being connected to ball outlet holes on a plurality of ball storage barrels (101), and a limit claw plate (202) being provided on the grinding ball slideway (201); the lifting assembly (2) further comprises a bracket (209), and a slide rail (205), a servo motor (206), and a sprocket (210) are provided on the bracket (209), the servo motor (206) is drivingly connected to a sprocket (210), and a chain (207) is sleeved on two sprocket wheels (210), the slide rail (205) is slidably connected to the slide frame (204), the slide frame (204) is slidably connected to the transport claw plate (203), the transport claw plate (203) is rotatably connected to the chain (207), and the transport claw plate (203) cooperates with the limit claw plate (202); an additional slideway (208) is installed on the servo motor (206), and a limit claw plate (202) is provided on the additional slideway (208).

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