JPH11319609A - Unit for feeding ball to ball mill - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the unit for feeding balls to a ball mill capable of exactly measuring the number of balls and feeding smoothly the balls and also hardly causing a trouble resulted from clogging of the balls. SOLUTION: In the ball feed unit to the ball mill 18 consisting of a shute 2 discharging the ball by rotating, an orientating machine 5 disposed at a front of the shute 2, arranging the balls discharged from the shute 2 and carrying out them to a carrying-out mechanism and a transporting machine transporting the balls carried out from the carrying-out mechanism and charging them to the ball mill 18, a weir plate 17 enable of discharging only one bank of balls is provided at a tip of the shute 2 and the orientating machine 5 is formed in a form like rod freely rotatable around a central axis and a notch in a form like gutter having a divide on its surface is formed in an axial direction. Moreover in the ball feed unit of the ball mill 18, a feed passage 16 in which at least three round rods are arranged side by side in parallel with a desired distance is disposed preferably at the tip part of the transporting machine.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for supplying a ball to a ball mill for pulverizing solids with the ball.

[0002]

2. Description of the Related Art In general, when pulverizing a solid material with a ball mill, it is necessary to add a desired amount of several types of steel balls having different diameters each time the ball is operated for a predetermined time. Conventionally,
The operation of supplying the ball has been performed in such a manner that an operator manually inputs a desired amount of the ball into the ball mill during or after the operation of the ball mill is temporarily stopped. However, this work is not only time-consuming, but also involves heavy work in a place with a poor working environment.

As a countermeasure, for example, Japanese Utility Model Laid-Open No. 5-490
A ball supply device as described in No. 46 has been developed.
As shown in FIGS. 1 and 2, the apparatus includes a plurality of rotatable chutes 2, 12 each having a ball 4, 4 having a different diameter.
a (4a is not shown) is always stored. Then, for example, when it becomes necessary to supply the ball 4 to the ball mill 18, the desired chute is rotated and inclined, and a gutter-like shape of a cylindrical aligning machine 5 disposed in front of the chute as shown in FIG. Align the notches 5a in a line.

Next, when the aligning machine 5 is rotated, the balls 4 in the notches 5a fall onto the chain conveyor 6 disposed below, are horizontally carried out, and are transferred to the front bucket conveyor 8. . At this time, the number of balls is measured by the photoelectric tube 9 disposed at the tip of the chain conveyor 6, and when the number reaches the set number, the chain conveyor 6 and the aligning machine 5 stop, and the chute 2 returns to the horizontal state. A supply path 15 made of an iron plate and bent is provided in front of the bucket conveyor 8 as shown in FIG. 6 so that a supplied desired amount of balls is put into a ball mill. . It should be noted that the same supply as described above can be performed for the ball 4a.

[0005] However, in the above-mentioned ball mill supply device, balls having different diameters can be automatically supplied by a required amount, but sometimes, as shown in FIG. There may be a case where a plurality of balls 4 are superimposed on 5a. In this state,
If the balls 4 drop onto the chain conveyor 6, an error may occur in the measurement of the number of balls, or the supply path 15 in front of the ball mill 18
In some cases, the ball 4 was clogged, causing a failure of the device.

[0006]

SUMMARY OF THE INVENTION According to the present invention, it is possible to supply a ball smoothly by accurately measuring the number of balls, and to eliminate a failure due to a blockage of the ball during the supply of the ball. An object of the present invention is to provide a ball supply device for a ball mill.

[0007]

A ball supply device for a ball mill according to the present invention comprises a chute for rotating and discharging a ball, and a chute disposed in front of the chute for discharging and discharging the ball discharged from the chute. In a ball supply device to a ball mill comprising an aligning machine for unloading to a mechanism and a transfer machine for transferring and charging the ball unloaded by the unloading mechanism to a ball mill, a single line of balls can be discharged to the tip of the chute. A dam plate is provided, and the aligner is formed in a rod shape rotatable about a central axis, and a gutter-shaped notch having a partition on its surface is formed in the axial direction.

Further, in the above-described apparatus for supplying balls to a ball mill, it is preferable that a supply path in which at least three round bars are arranged in parallel at a desired interval is provided at the tip of the transfer machine.

[0009]

According to the above-mentioned ball supply device,
It is possible to discharge a certain number of balls without the balls overlapping or staying, and to improve the counting accuracy of the number of balls to be supplied.

[0010] Further, by providing the supply path in which the round bars are juxtaposed, even when the gradient of the supply path is small or the shape of the supply path is curved, the balls roll along the chute and are smoothly moved one by one sequentially. It will be charged into a ball mill.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described based on specific embodiments, but the present invention is not limited to these embodiments.

The structure of the ball supply device according to the present invention is, for the most part, similar to that of the above-described ball supply device, as shown in FIGS.

That is, the first chute 2 is provided above the gantry 1.
The chute 2 is rotatably supported at its lower front end. The chute 2 has an electric jack 3 attached to the back of the bottom surface, and can be tilted. Shoot 2
At the front end of the ball, a weir plate 17 having an air gap slightly larger than the diameter of the ball 4 is provided so that the ball is not supplied to the notch 5a of the aligning machine 5 described later.

An aligning machine 5 is provided in front of the chute 2. As shown in FIG. 3, the aligning machine 5 is cylindrical, has a length that covers the entire width of the chute 2, and is partially formed with a notch 5a. The aligner 5 is driven by a motor 7 via a chain 7a.
Can rotate around the central axis (FIG. 1). The notch 5a is formed in a gutter shape having a size slightly larger than the diameter of the ball 4, and a partition 5b is provided between the notches 5a so as to be separated for each ball 4. The height of the upper end of the aligning machine 5 is such that the ball 4 is
Is slightly higher than the bottom surface of the chute 2 so as not to fall into the aligning machine 5 from above. Above the aligning machine 5, the weir plate 17 of the chute 2 is located.

A chain conveyor 6 longer than the length of the aligning machine 5 is provided below and in front of the aligning machine 5, and is driven by a motor (not shown). Further, a photoelectric tube 9 is disposed at a ball discharge portion of the chain conveyor 6, and the photoelectric tube 9 is moved by the chain conveyor 6 to measure the number of balls 4 to be discharged. Conveyor 6 stops and shoot 2
Is a configuration for returning horizontally.

A bucket conveyor 8 is provided in front of the chain conveyor 6, and a supply path 16 which is inclined in a curved manner is provided from a tip portion of the bucket conveyor 8 to a position above a loading port of the ball mill 18. In the supply path 16, as shown in FIG. 4, four round bars 16a are arranged in parallel at desired intervals.
The ball 4 moves in the space between the round bars 16a. The round bar 16a may be provided so that the ball 4 can be moved, and the number thereof is appropriate as long as it is at least three or more. The shape of the supply path 16 is appropriate, and is not limited to the cylindrical shape as shown in FIG.

Further, at a position adjacent to the first chute 2, the weir plate 17 and the aligning machine 5, a second chute 12 having a structure similar to these and having a size corresponding to the diameter of the second ball 4a is provided. A weir plate 19 and an aligner 13 are provided, and a second chain conveyor 14 having a photoelectric tube 10 at a discharge portion is provided below the chain conveyor 6. The aligning machine 13 is rotatable around a central axis by a motor 11.
The above devices may be increased or decreased as necessary, such as the type of ball used.

Next, the operation of the ball supply device will be described. First, balls 4 and 4a having different diameters are loaded and stored in the chutes 2 and 12, respectively. Then, when the chain conveyor 6 and the bucket conveyor 8 are started, and the electric jack 3 is started to tilt the chute 2, the balls 4 are blocked by the aligning machine 5 and the weir plate 17.

In this state, the motor 7 is started and the aligning machine 5 is started.
Is rotated, the balls 4 are loaded in the cutouts 5a in tandem, and the balls 4 are separately loaded one by one in the cutouts 5a by the partitions 5b. In addition, weir plate 17
Therefore, the ball 4 does not overlap with the notch 5a. Then, when the aligning machine 5 is further rotated, the balls 4 fall onto the chain conveyor 6 and are carried out. At this time, the other balls 4 in the chute 2 are closed by the cylindrical portion of the aligning machine 5.

On the other hand, the balls 4 conveyed by the chain conveyor 6 are transferred to the bucket conveyor 8 while being measured one by one by the photoelectric tube 9 at the front end. The ball mill 18 is smoothly moved one by one. Further, the aligning machine 5 is continuously rotated to load the balls 4 sequentially into the ball mill 18, and when the balls 4 reach a desired amount, the aligning machine 5 and the chain conveyor 6 are stopped, and the chute 2 is returned to the horizontal.

If necessary, the second chute 12, the second aligner 13, and the second chain conveyor 14 are driven in the same manner as described above, and a desired amount of balls 4a of different types is added. In addition, the ball charging operation to the ball mill 18 is performed regardless of whether the ball mill 18 is operating or stopped.
It can be done at any time. Control of each device can be performed automatically or manually by a control panel (not shown).

[0022]

As described above in detail, the apparatus for supplying a ball to a ball mill according to the present invention has the above-described configuration, so that the number of balls can be accurately measured and the balls can be supplied smoothly. There is an effect that a failure due to blockage of the ball at the time of supply can be eliminated.

Further, by using the above-mentioned ball supply device, the operation of charging the ball into the ball mill can be performed by remote control at any time irrespective of the operation or stoppage of the ball mill. In addition, the work efficiency of the ball mill is improved, and a practically remarkable effect is obtained.

[Brief description of the drawings]

FIG. 1 is a front view of a ball supply device according to the present invention.

FIG. 2 is a view taken along line (A)-(A) of FIG.

FIG. 3 is a perspective view of a main part of the aligning machine.

FIG. 4 is a view taken along line (B)-(B) of FIG. 1;

FIG. 5 is a perspective view of a main part of a conventional aligning machine.

FIG. 6 is a perspective view of a conventional supply path.

[Explanation of symbols]

 2 Chute 4 Ball 5 Aligner 5a Notch 5b Partition 6 Chain conveyor 8 Bucket conveyor 9 Phototube 16 Supply path 16a Round bar 17 Weir plate 18 Ball mill

Claims (2)

[Claims] 1. A chute for rotating and ejecting a ball, an aligning machine disposed in front of the chute, for aligning and ejecting the ball ejected from the chute to an ejection mechanism, and ejected by the ejection mechanism. In a ball supply device for a ball mill, comprising a transfer device for transferring and charging a ball to a ball mill, a weir plate capable of discharging a single line of balls is provided at the tip of the chute, and the aligning device is arranged around a central axis. A ball supply device for a ball mill, comprising a rotatable rod shape and a gutter-shaped notch having a partition on its surface formed in an axial direction. 2. A ball supply apparatus for a ball mill according to claim 1, wherein a supply path in which at least three round bars are arranged in parallel at a desired interval is disposed at a tip end of said transporter. .