A lifting and conveying device for adding steel balls to a ball mill

Abstract

The utility model relates to the technical field of mineral processing equipment for mines, and discloses a lifting and conveying device for adding steel balls to a ball mill, comprising a shell, a vertically arranged conveyor belt installed in the shell through a driving wheel, a plurality of ball scooping claws evenly distributed on the outer side of the conveyor belt, a feeding port is provided near the bottom of one side of the shell, and a discharging port is provided near the top of the other side, the bottom plates of the feeding port and the discharging port are both grilles and extend to the conveyor belt inside the shell, the grilles are arranged as a plurality of parallel strip structures and are open near one end of the conveyor belt, the distance between the grilles and the conveyor belt is less than the diameter of the steel balls, and the claws of the ball scooping claws are staggered with the grilles when passing through the grilles; the utility model can retain the steel balls entering the device on the feeding grilles, and accurately lift them to the discharging port through the ball scooping claws, thereby solving the problem that the steel balls of traditional bucket elevators are easy to fall into the bottom of the bucket elevator, and when the bucket digs up the steel balls, the bucket, the steel balls and the casing are stuck and damaged due to the rough and irregular surface of the steel balls.

Description

Technical Field

[0001] The utility model relates to the technical field of mine dressing equipment, in particular to a lifting and conveying device for adding steel balls to a ball mill. Background Art

[0002] In the process of mineral processing and grinding in mines, grinding is mainly carried out by adding grinding media into the ball mill. The grinding media is mainly steel balls. When the ball mill is operating normally, the reasonable friction between the steel balls, the steel balls and the ore, and the steel balls and the liner of the ball mill will consume the steel balls. It is necessary to add steel balls regularly to ensure the filling rate of the steel balls in the mill, so as to ensure the grinding effect. At present, there are two ways to add the worn steel balls of the ball mill on the market. One is to add the steel balls manually by the amount, and the other is to add the steel balls automatically by the automatic ball adding machine. Regardless of the form, the steel balls need to be added to the feeding port of the ball mill. The feeding port of the ball mill is set in the air higher than the ground. In order to facilitate the addition of steel balls, a platform is usually set at the feeding port to facilitate the manual addition of steel balls and the placement of the automatic ball adding machine. However, this method still requires the steel balls to be transferred from the ground to the platform by a crane. The transfer distance and height are usually more than ten meters or dozens of meters, which has a high risk factor and high labor intensity for workers. At the same time, some sites are limited in space, the platform is narrow, and the ball adding machine is not convenient to place, so the automatic addition of steel balls cannot be achieved.

[0003] The utility model patent with the authorization announcement number CN209109295U discloses a lifting and adding ball device for a ball mill, which lifts the steel balls through a lifting chain and a steel ball hopper, solving the problem of scattered steel balls in high-altitude operation in the prior art. However, in this scheme, the ball receiving bucket is arranged outside the casing, and the discharge port of the ball receiving bucket extends to the inside of the casing, corresponding to the steel ball hopper, but it can only catch the steel balls when the steel ball hopper is lifted upward to the discharge port position of the ball receiving bucket. This method has the problem that after the steel balls enter the casing, because the steel ball hopper has not yet run to the discharge port of the ball receiving bucket, the steel balls will fall to the bottom of the casing and accumulate. When the steel ball hopper scoops up the steel balls, the steel ball hopper, the steel balls, and the casing will be stuck due to the rough and irregular surface of the steel balls, which will eventually cause damage. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a lifting and conveying device for adding steel balls to a ball mill. The steel balls entering the device can be retained on the feeding grid by using the ball scooping claws to lift the balls in conjunction with the corresponding grid form, and are accurately lifted to the discharge port by the ball scooping claws, thereby solving the problem that the steel balls of traditional bucket elevators are easily dropped into the bottom of the bucket elevator, and when the bucket scoops up the steel balls, the bucket, the steel balls and the casing are stuck and damaged due to the rough and irregular surface of the steel balls.

[0005] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0006] A lifting and conveying device for adding steel balls to a ball mill comprises a shell, a vertically arranged conveyor belt is installed in the shell through a driving wheel, a plurality of ball scooping claws are evenly distributed on the outside of the conveyor belt, a material inlet is provided near the bottom of one side of the shell, and a material outlet is provided near the top of the other side, the bottom plates of the material inlet and the material outlet are both grids and extend to the conveyor belt inside the shell, the grid is arranged as a plurality of parallel strip structures and is open near one end of the conveyor belt, the distance between the grid and the conveyor belt is less than the diameter of the steel balls, and the claws of the ball scooping claws are staggered with the grid when passing through the grid.

[0007] As a further implementation method, the shell is vertically arranged, a driving wheel is provided at the top end of the shell, a driven wheel is provided at the bottom end, and the conveyor belt is installed on the driving wheel and the driven wheel.

[0008] As a further implementation, the driving wheel is supported by a driving wheel axle, the driven wheel is supported by a driven wheel axle, a driving motor is provided at the driving wheel axle, and the driving motor is connected to the driving wheel axle.

[0009] As a further implementation, the feed inlet is higher than the driven wheel, and the height of the discharge outlet is not higher than the height of the driving wheel.

[0010] As a further implementation, the ball scooping claw includes a mounting plate and claw fingers, and a plurality of claw fingers are arranged in parallel and mounted on the conveyor belt through the mounting plate.

[0011] As a further implementation, the spacing between the fingers is the same as the spacing between the strip structures of the grid.

[0012] As a further implementation, a feed detection sensor is provided on the shell near the feed inlet.

[0013] As a further implementation, a discharge detection sensor is provided at the discharge port.

[0014] As a further implementation, the ball-receiving surface of the claw finger is concave.

[0015] As a further implementation method, the claw index quantity is determined according to the diameter of the steel balls conveyed and the number of the steel balls.

[0016] The beneficial effects of the above utility model are as follows:

[0017] 1. The utility model can retain the steel balls entering the device on the feeding grid by using the ball-lifting claws to lift the balls in combination with the corresponding grid form, and accurately lift them to the discharge port by using the ball-lifting claws, thereby solving the problem that the steel balls of the traditional bucket elevator easily fall into the bottom of the bucket, and when the bucket digs up the steel balls, the bucket, the steel balls and the casing are stuck and damaged due to the rough and irregular surface of the steel balls.

[0018] 2. The utility model installs a vertical steel ball lifting and conveying device on the workshop floor to achieve the height lifting of steel balls added manually or by a ball adding machine from the ground to the feeding port of the ball mill, thereby solving the safety hazard of high-altitude transportation of steel balls and reducing the labor intensity of workers.

[0019] 3. The control system of the utility model can integrate the operation signal of the driving motor and the sensor signal. The control system can control the operation and stop of the lifting and conveying device, and count and alarm the in and out situation of the steel balls. At the same time, the control system can interlock with the peripheral ball adding machine and ball mill signal to control the start and stop, thereby realizing the automatic control of the whole process of adding balls. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0021] Figure 1 It is a schematic diagram of the overall structure of a lifting and conveying device for adding steel balls to a ball mill in an embodiment of the utility model;

[0022] Figure 2 It is a partial structural schematic diagram of the lifting and conveying device in the embodiment of the utility model.

[0023] In the figure: the distances or sizes between parts are exaggerated to show the positions of various parts, and the schematic diagram is for reference only.

[0024] Wherein: 1. Shell, 2. Feed port, 3. Discharge port, 4. Ball receiving grid, 5. Ball discharge grid, 6. Driving wheel, 7. Driven wheel, 8. Conveyor belt, 9. Ball catching claw, 10. Driving motor, 11. Driving wheel shaft, 12. Driven wheel shaft, 13. Feed detection sensor, 14. Discharge detection sensor; 401. Grid, 901. Mounting plate, 902. Claw finger. DETAILED DESCRIPTION

[0025] It should be noted that the following detailed descriptions are all illustrative and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0026] Embodiment 1

[0027] In a typical implementation of the present invention, reference is made to Figure 1-Figure 2As shown, a lifting and conveying device for adding steel balls to a ball mill comprises a shell 1, a vertically arranged conveyor belt is installed in the shell 1 through a driving wheel, a plurality of ball scooping claws are evenly distributed on the outside of the conveyor belt, a feed port 2 is provided near the bottom of one side of the shell 1, a discharge port 3 is provided near the top of the other side, the bottom plates of the feed port 2 and the discharge port 3 are both grilles 401 and extend to the conveyor belt 8 inside the shell 1, the grille 401 is arranged as a plurality of parallel strip structures and is open on one side close to the conveyor belt 8, the distance between the grille 401 and the conveyor belt 8 is less than the diameter of the steel balls, and the claw fingers 902 of the ball scooping claws 9 are staggered with the grille 401 when passing through the grille 401.

[0028] like Figure 1 As shown, the shell 1 is arranged vertically, the bottom end of the shell 1 is close to the bottom surface, which is the ball receiving end, and the top end of the shell 1 is arranged at a high place. The height of the shell 1 is determined according to the actual lifting height, which is the ball adding end for adding balls into the ball mill.

[0029] A driving wheel 6 is provided at the top of the housing 1, and a driven wheel is provided at the bottom. A conveyor belt 8 is installed on the driving wheel 6 and the driven wheel 7. The driving wheel is supported by a driving wheel shaft 11. The driving wheel shaft 11 is installed on the housing 1 through a bearing. Similarly, the driven wheel is supported by a driven wheel shaft 12. A driving motor 10 is provided on the outside of the housing. The output end of the driving motor 10 is connected to the driving wheel shaft 11, and the driving wheel 6 is driven to rotate through the driving wheel shaft 11. The driving wheel 6 drives the driven wheel 7 to rotate through the conveyor belt 8. The conveyor belt 8 is vertically arranged to enable the ball catching claw 9 on the conveyor belt 8 to lift the steel ball.

[0030] The driving wheel 6 and the driven wheel 7 can be divided into a flat roller type and a two-side gear type. The roller type is suitable for conveyor belts, and the gear type is suitable for plate chain conveyor belts. The conveyor belt 8 is annularly sleeved on the driving wheel 6 and the driven wheel 7. The conveyor belt 8 can be divided into a belt type and a plate chain type. The vertical lifting of the conveyor belt is an existing technology.

[0031] like Figure 1 As shown, the conveyor belt 8 on the left side is the lifting side of the steel ball, and the other side is the descending side of the conveyor belt 8. A feed inlet 2 is provided at the bottom end of the left side of the housing 1, and a discharge outlet 3 is provided at the top end of the right side.

[0032] like Figure 1 As shown, a plurality of ball catching claws 9 are evenly arranged on the outer side of the conveyor belt 8, and the ball catching claws 9 are used to catch steel balls. When the ball catching claws 9 move to the inlet, the steel balls are picked up, and then the steel balls are lifted and moved to the outlet 3. The steel balls are sent to the ball mill through the outlet 3 to complete the addition of steel balls.

[0033] In order to ensure that the steel balls are successfully scooped up, the feed port 2 needs to be higher than the driven wheel 7 by a set distance, and the height of the discharge port 3 is not higher than the height of the driving wheel 6.

[0034] In order to ensure that the steel balls will not fall into the bottom of the shell 1 after entering the shell 1 through the feed port, the bottom plates of the feed port 2 and the discharge port 3 of this embodiment extend into the shell 1 and are arranged close to the outside of the conveyor belt 8. The bottom plate of the feed port 2 is a ball receiving grid 4, and the bottom plate of the discharge port 3 is a ball outlet grid 5. The ball receiving grid 4 is inclined, and the distance between the end of the ball receiving grid 4 and the conveyor belt 8 is less than the diameter of the steel balls. Figure 1 As shown, when the steel ball enters through the feed port 2, the steel ball falls on the inclined ball receiving grid 4 and moves to the end of the ball receiving grid 4. Under the obstruction of the conveyor belt 8, the steel ball stays at the end of the ball receiving grid 4 and does not fall to the bottom of the shell. When the ball scooping claw moves to the position of the ball receiving grid 4, the steel ball is scooped up and lifted.

[0035] The structure of this embodiment will not cause the steel balls to fall into the bottom of the shell, causing the steel ball hopper, the steel balls and the shell to get stuck.

[0036] like Figure 2 As shown, the ball scooping claw 9 includes a mounting plate 901 and claw fingers 902, one end of a plurality of claw fingers 902 is mounted on the mounting plate 901, the mounting plate 910 is mounted on the conveyor belt 8 through a bolt assembly, and the plurality of claw fingers 902 are arranged in parallel.

[0037] The ball receiving grid 4 and the ball discharging grid 5 are structured as a grid 401 near one end of the conveyor belt 8. The structure of the grid 401 is arranged as a plurality of parallel strip structures and is open near one end of the conveyor belt 8, such as Figure 2 As shown, the open setting allows the conveyor belt 8 to drive the claw fingers 902 through the grille 401, so that the claw fingers 902 of the ball scooping claw 9 can be staggered with the grille 401, and then the claw fingers 902 pass through the grille 401 and continue to rise to take away the steel balls on the grille 401.

[0038] It is understandable that the spacing of the claw fingers 902 is the same as the spacing of the strip structures of the grid 401, ensuring that the claw fingers 902 are arranged crosswise with the grid 401 when passing through the grid 401. The number of ball catching claws on the conveyor belt 8 is determined according to the number and speed of steel balls conveyed, and the number ranges from 2 to 100.

[0039] In order to record the added steel balls, a feed detection sensor 13 is provided on the shell 1 near the feed port 2. A discharge detection sensor 14 is provided on the shell at the discharge port 3. The sensors are divided into laser and photoelectric emission forms, which can judge whether there are steel balls passing through and count the steel balls passing through.

[0040] In order to ensure that the steel ball will not fall off after the ball catching claw 9 catches the ball, the ball receiving surface of the claw finger 902 of this embodiment can be recessed to facilitate the retention of the steel ball on the surface of the ball catching claw 9. The ball catching claw 9 can be made of metal, wear-resistant alloy, or plastic, and the shape of the claw finger 902 can be columnar or rectangular. The number of claw fingers 902 is determined according to the diameter of the steel ball and the number of steel balls to be transported.

[0041] The ball receiving grid 4 and the ball outlet grid 5 can be made of metal, wear-resistant alloy, or plastic. The thickness is set according to the amount of balls entering, and they have wear-resistant and load-bearing properties.

[0042] The operation signal of the driving motor 10, the signal of the feeding detection sensor 13 and the discharging detection sensor 14 are connected to the control system. The control system can control the operation and stop of the device, and count and alarm the steel ball in and out. At the same time, the control system can be interlocked with the peripheral ball adding machine and ball mill signal to control the start and stop.

[0043] The number of claw fingers 902 of the ball catching claw 9 of this embodiment can be determined according to actual conditions. If only one ball is caught each time, 2-3 ball catching claws 9 can be set. If multiple balls are caught each time, the number of claw fingers can be increased.

[0044] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A lifting and conveying device for adding steel balls to a ball mill, characterized in that: It includes a shell, in which a vertically arranged conveyor belt is installed through a driving wheel, a plurality of ball scooping claws are evenly distributed on the outside of the conveyor belt, a feed port is provided near the bottom on one side of the shell, and a discharge port is provided near the top on the other side, the bottom plates of the feed port and the discharge port are both grilles and extend to the conveyor belt inside the shell, the grilles are arranged as a plurality of parallel strip structures and are open near one end of the conveyor belt, the distance between the grilles and the conveyor belt is less than the diameter of the steel ball, and the claws of the ball scooping claws are staggered with the grilles when passing through the grilles.

2. The lifting and conveying device for adding steel balls to a ball mill according to claim 1, characterized in that: The shell is arranged vertically, a driving wheel is arranged at the top end of the shell, a driven wheel is arranged at the bottom end, and a conveyor belt is installed on the driving wheel and the driven wheel.

3. The lifting and conveying device for adding steel balls to a ball mill according to claim 2, characterized in that: The driving wheel is supported by a driving wheel shaft, and the driven wheel is supported by a driven wheel shaft. A driving motor is provided at the driving wheel shaft, and the driving motor is connected to the driving wheel shaft.

4. The lifting and conveying device for adding steel balls to a ball mill according to claim 2, characterized in that: The feed inlet is higher than the driven wheel, and the discharge outlet is not higher than the driving wheel.

5. The lifting and conveying device for adding steel balls to a ball mill according to claim 1, characterized in that: The ball scooping claw comprises a mounting plate and claw fingers, and a plurality of claw fingers are arranged in parallel and mounted on the conveyor belt through the mounting plate.

6. The lifting and conveying device for adding steel balls to a ball mill according to claim 5, characterized in that: The spacing between the fingers is the same as the spacing between the strip structures of the grid.

7. The lifting and conveying device for adding steel balls to a ball mill according to claim 1, characterized in that: The housing is provided with a material feeding detection sensor near the material feeding port.

8. The lifting and conveying device for adding steel balls to a ball mill according to claim 1, characterized in that: A discharge detection sensor is provided at the discharge port.

9. A lifting and conveying device for adding steel balls to a ball mill according to claim 1 or 5, characterized in that: The ball-catching surface of the claw finger is concave.

10. The lifting and conveying device for adding steel balls to a ball mill according to claim 9, characterized in that: The claw index quantity is determined according to the diameter of the steel balls conveyed and the number of the steel balls.

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