Ball adding device for ball milling and ball mill

Abstract

The utility model discloses a ball-milling and ball-adding device and a ball mill, and the ball-milling and ball-adding device comprises a box body used for accommodating semi-autogenous grinding steel balls; the spiral conveying mechanism is used for receiving the steel balls and conveying the steel balls to the outlet end in the axial direction of the spiral conveying mechanism, an inlet is formed in one side of the spiral conveying mechanism, and the outlet end of the spiral conveying mechanism is used for being connected with ball milling equipment; the guide mechanism is arranged between the box body and the spiral conveying mechanism, is provided with a guide surface and is used for guiding the steel balls in the box body to an inlet of the spiral conveying mechanism; and the dredging device is arranged at the ball outlet of the box body and is used for dredging the steel balls positioned at the ball outlet in the box body.

Description

Technical Field

[0001] The utility model relates to the technical field of semi-autogenous grinding, in particular to a ball milling and adding ball device. In addition, the utility model also relates to a ball mill comprising the ball milling and adding ball device. Background Art

[0002] The ball mill uses its cylinder lifting bars to lift the steel balls to a certain height, and uses the obtained kinetic energy to impact and grind the ore to achieve the purpose of material crushing.

[0003] At present, some mines still add balls to the mill manually. In actual production, if a ball adding machine is used to add steel balls, it is beneficial to improve the grinding efficiency and reduce the energy consumption of the mill. In the prior art, many ore dressing plants use ball adding machines to add steel balls, which has a good application effect, can greatly reduce the intensity of manual operation, and improve production efficiency. However, due to the large mass of the steel balls themselves, when the ball adding machine is running, the steel balls are stacked and easily stuck or blocked. Utility Model Content

[0004] The utility model provides a ball milling and adding ball device and a ball mill, so as to solve the technical problem that the existing ball adding machine is prone to stagnation and blockage during operation.

[0005] According to one aspect of the utility model, a ball milling and adding ball device is provided, comprising:

[0006] A box body for accommodating semi-self-grinding steel balls;

[0007] A screw conveying mechanism, used for receiving steel balls and conveying the steel balls to an outlet end along the axial direction of the screw conveying mechanism, an inlet is arranged on one side of the screw conveying mechanism, and the outlet end of the screw conveying mechanism is used for connecting with a ball mill;

[0008] A guide mechanism, disposed between the box body and the screw conveying mechanism, having a guide surface for guiding the steel balls in the box body to the inlet of the screw conveying mechanism;

[0009] The guiding device is arranged at the ball outlet of the box body and is used for guiding the steel balls located at the ball outlet in the box body.

[0010] As a further improvement of the above technical solution, the ball outlet of the box is arranged on the side facing the screw conveying mechanism, the guide surface is respectively connected to the ball outlet of the box and the entrance of the screw conveying mechanism, and the height of the ball outlet is greater than the diameter of a single steel ball and less than the sum of the diameters of two steel balls.

[0011] As a further improvement of the above technical solution, the bottom surface of the box body is arranged at a first slope, and the guide surface is arranged at a second slope, and the second slope is smaller than the first slope.

[0012] As a further improvement of the above technical solution, a tooth gap is provided on the bottom surface of the box body near the outlet position of the box body; the guiding device includes a rotating shaft and a first driver for driving the rotating shaft to rotate, and guiding teeth are provided on the circumference of the rotating shaft corresponding to the tooth gap, and the guiding device is used to drive the guiding teeth to swing through the tooth gap through the rotation of the rotating shaft to guide the steel ball at the outlet position of the box body.

[0013] As a further improvement of the above technical solution, the tooth gaps are evenly spaced along the length direction of the ball outlet.

[0014] As a further improvement of the above technical solution, the circumferential positions of the axially adjacent guide teeth are arranged at a preset angle.

[0015] As a further improvement of the above technical solution, the spiral conveying mechanism includes a shell, a spiral reamer arranged in the shell and a second driver for driving the spiral reamer to rotate. The bottom surface of the inner wall of the shell is an arc surface, and the pitch of the spiral reamer matches the diameter of the steel ball.

[0016] As a further improvement of the above technical solution, the screw conveying mechanism also includes a ball receiving box connected to the bottom of the shell and arranged below the outlet end of the spiral reamer, and a sensing device for detecting the falling condition of the steel ball is provided on one side of the ball receiving box.

[0017] As a further improvement of the above technical solution, the length of the ball outlet, the length of the guide surface and the length of the inlet of the spiral conveying mechanism match each other.

[0018] According to another aspect of the utility model, a ball mill is provided, which comprises the above-mentioned ball milling and adding ball device.

[0019] The utility model has the following beneficial effects:

[0020] The ball mill ball adding device contains semi-self-grinding steel balls through a box body, and the guide mechanism guides the steel balls falling out of the ball box outlet end to the screw conveying mechanism under the action of the guide surface. The start and stop of the screw conveying mechanism is controlled according to the actual ball adding amount required, thereby realizing accurate ball adding. By setting a dredging device, the steel balls at the ball outlet position of the box body are dredged, so that the steel balls blocked at the bottom of the box body are dredged until normal ball feeding is achieved, thereby ensuring stable operation of the equipment and improving production efficiency.

[0021] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting a part of this application 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. In the drawings:

[0023] Figure 1 It is a structural schematic diagram of a ball milling and adding ball device of a preferred embodiment of the utility model;

[0024] Figure 2 It is a side structural schematic diagram of a ball milling and adding ball device according to a preferred embodiment of the utility model.

[0025] Legend:

[0026] 1. Box body 11, tooth gap 12, ball outlet 2, guide mechanism 3, screw conveying mechanism 31, screw reamer 32, second driver 33, ball receiving box 34, induction device 35, transmission mechanism 4, first driver 5, rotating shaft 51, guide teeth. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. However, the present invention can be implemented in a variety of different ways as defined and covered below.

[0028] Figure 1 It is a structural schematic diagram of a ball milling and adding ball device of a preferred embodiment of the utility model; Figure 2 It is a side structural schematic diagram of a ball milling and adding ball device according to a preferred embodiment of the utility model.

[0029] like Figure 1 and Figure 2 As shown, the ball milling and adding ball device of this embodiment includes:

[0030] Box 1, used for accommodating semi-self-grinding steel balls;

[0031] The screw conveying mechanism 3 is used to receive the steel balls and convey the steel balls to the outlet end along the axial direction of the screw conveying mechanism 3. An inlet is arranged on one side of the screw conveying mechanism 3. The outlet end of the screw conveying mechanism 3 is used to be connected to the ball milling equipment.

[0032] The guide mechanism 2 is disposed between the box body 1 and the screw conveying mechanism 3 and has a guide surface for guiding the steel balls in the box body 1 to the entrance of the screw conveying mechanism 3;

[0033] The guiding device is arranged at the ball outlet 12 of the box body 1 and is used for guiding the steel balls located at the ball outlet 12 in the box body 1 .

[0034] The ball milling and adding device is provided with a control element, which is implemented based on the PLC controller of the prior art, and calculates the actual required ball adding amount according to the semi-autogenous grinding amount fed back by the existing ball milling equipment in actual application and the feedback signal of the monitoring system of the mill, and controls the start and stop of the screw conveying mechanism 3 to realize automatic ball adding;

[0035] The ball mill and ball adding device contains semi-self-grinding steel balls through the box body 1, and the guide mechanism 2 guides the steel balls falling out of the ball box outlet end to the screw conveying mechanism 3 under the action of the guide surface, and controls the start and stop of the screw conveying mechanism 3 according to the actual ball adding amount required, thereby realizing accurate ball adding; by setting a guiding device, the steel balls at the ball outlet 12 of the box body 1 are moved and guided, so that the steel balls blocked at the bottom of the box body 1 are moved and cleared until normal ball feeding is achieved, thereby ensuring stable operation of the equipment and improving production efficiency.

[0036] It can be understood that the length of the ball outlet 12, the length of the guide surface and the length of the inlet of the screw conveying mechanism 3 match;

[0037] In this embodiment, the ball outlet 12 of the box body 1 is arranged on the side facing the spiral conveying mechanism 3, and the guide surface is respectively connected to the ball outlet 12 of the ball box 33 and the entrance of the spiral conveying mechanism 3. The height of the ball outlet 12 is greater than the diameter of a single steel ball and less than the sum of the diameters of two steel balls, ensuring that the bottom of the ball box is a single row of balls, ensuring smooth ball discharge;

[0038] The bottom surface of the box body 1 is arranged with a first slope, and the guide surface is arranged with a second slope, and the second slope is smaller than the first slope; setting the bottom surface slope of the box body 1 to be larger can ensure that the steel balls in the ball box can fall out, and the second slope is set relatively gently to prevent the steel balls on the guide surface from rolling too fast, prevent the steel balls from being squeezed out, and reduce the impact and pressure on the screw conveying mechanism 3;

[0039] In this embodiment, a tooth gap 11 is provided on the bottom surface of the box body 1 near the outlet position of the box body 1; the drainage device includes a rotating shaft 5 and a first driver 4 for driving the rotating shaft 5 to rotate, and a drainage tooth 51 is provided on the circumference of the rotating shaft 5 corresponding to the tooth gap 11. The drainage device is used to drive the drainage tooth 51 to swing through the tooth gap 11 through the rotation of the rotating shaft 5 to move the steel ball at the outlet position of the drainage box body 1. The first driver 4 is a motor. When it drives the rotating shaft 5 to rotate, the drainage tooth 51 periodically passes through the tooth gap 11 into the ball box to move the steel ball located on the bottom surface of the ball box near the ball outlet 12, so that the steel ball is drained to between two adjacent tooth gaps 11; based on this, the tooth gaps 11 are evenly spaced along the length direction of the ball outlet 12, and the spacing of the tooth gaps 11 matches the diameter of the steel ball, thereby improving the drainage effect and effectively solving the blockage and jamming problems.

[0040] Furthermore, the circumferential positions of the axially adjacent grooming teeth 51 are arranged at a preset angle, and the angle can be determined according to the number of grooming teeth 51 arranged circumferentially at the corresponding position of each tooth gap 11, so that the steel ball between the two tooth gaps 11 is staggered by the grooming teeth 51 on both sides, thereby improving the grooming effect;

[0041] In this embodiment, the spiral conveying mechanism 3 includes a shell, a spiral reamer 31 disposed in the shell, and a second driver 32 for driving the spiral reamer 31 to rotate. The bottom surface of the inner wall of the shell is an arc surface, and the pitch of the spiral reamer 31 matches the diameter of the steel ball; the second driver 32 is a motor, which is connected to the spiral reamer 31 through a transmission mechanism 35 such as a reducer; the spiral conveying mechanism can convey steel balls based on the working principle of the auger, and control the number of revolutions of the spiral reamer driven by the driving mechanism through the control element to control the conveying quantity of steel balls, thereby realizing accurate ball addition;

[0042] In this embodiment, the screw conveying mechanism 3 also includes a ball receiving box 33 connected to the bottom of the shell and arranged below the outlet end of the screw reamer 31. A sensing device 34 for detecting the falling condition of the steel ball is provided on one side of the ball receiving box 33. The sensing device 34 is connected to the control element. When the ball box is blocked when the screw conveying mechanism 3 is in the working state, the sensing device 34 cannot sense the output of the steel ball. The opening of the drainage device is controlled according to the time when the sensing device 34 senses no ball output, and the drainage device is stopped when the steel ball output is sensed, thereby effectively reducing energy consumption.

[0043] 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 ball milling device, characterized in that: include: A box (1) for accommodating semi-self-grinding steel balls; A screw conveying mechanism (3) is used to receive the steel balls and convey the steel balls to an outlet end along the axial direction of the screw conveying mechanism (3); an inlet is arranged on one side of the screw conveying mechanism (3); and the outlet end of the screw conveying mechanism (3) is used to be connected to a ball mill; A guide mechanism (2) is arranged between the box body (1) and the screw conveying mechanism (3), and has a guide surface for guiding the steel balls in the box body (1) to the entrance of the screw conveying mechanism (3); The guiding device is arranged at the ball outlet (12) of the box body (1) and is used for guiding the steel balls located at the ball outlet (12) in the box body (1).

2. The ball milling and adding ball device according to claim 1, characterized in that: The ball outlet (12) of the box body (1) is arranged on a side facing the screw conveying mechanism (3), the guide surface is respectively connected to the ball outlet (12) of the box body (1) and the entrance of the screw conveying mechanism (3), and the height of the ball outlet (12) is greater than the diameter of a single steel ball and less than the sum of the diameters of two steel balls.

3. The ball milling and adding ball device according to claim 2, characterized in that: The bottom surface of the box body (1) is arranged at a first slope, and the guide surface is arranged at a second slope, wherein the second slope is smaller than the first slope.

4. The ball milling and adding ball device according to claim 1, characterized in that: The bottom surface of the box body (1) is provided with a tooth gap (11) near the outlet position of the box body (1); the drainage device comprises a rotating shaft (5) and a first driver (4) for driving the rotating shaft (5) to rotate; drainage teeth (51) are provided on the circumference of the rotating shaft (5) corresponding to the tooth gap (11); the drainage device is used to drive the drainage teeth (51) to swing through the tooth gap (11) through the rotation of the rotating shaft (5) to move the steel ball at the outlet position of the box body (1).

5. The ball milling and adding ball device according to claim 4, characterized in that: The tooth gaps (11) are evenly spaced along the length direction of the ball outlet (12).

6. The ball milling and adding ball device according to claim 5, characterized in that: The circumferential positions of the axially adjacent guide teeth (51) are arranged at a preset angle.

7. The ball milling and adding ball device according to claim 1, characterized in that: The screw conveying mechanism (3) comprises a housing, a screw reamer (31) arranged in the housing, and a second driver (32) for driving the screw reamer (31) to rotate. The bottom surface of the inner wall of the housing is an arc-shaped surface, and the pitch of the screw reamer (31) matches the diameter of the steel ball.

8. The ball milling and adding ball device according to claim 7, characterized in that: The screw conveying mechanism (3) further comprises a ball receiving box (33) connected to the bottom of the shell and arranged below the outlet end of the screw reamer (31); a sensing device (34) for detecting the falling condition of the steel ball is arranged on one side of the ball receiving box (33).

9. The ball milling and adding ball device according to any one of claims 1 to 8, characterized in that: The length of the ball outlet (12), the length of the guide surface and the length of the inlet of the screw conveying mechanism (3) match each other.

10. A ball mill, characterized in that: The ball milling and adding ball device according to any one of claims 1 to 9 is used.

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