JP6875980B2 - Sieve machine with rotating drum - Google Patents

Description

The present invention relates to a sieving machine equipped with a rotating drum.

A sieving machine equipped with a rotating drum may be provided as an apparatus for sorting various processed materials such as crushed stones, ores, other lumps, and granules according to their particle sizes. This sieving machine is also called trommel, and is provided on the downstream side of crushers such as ball mills and rod mills and crushers, and the processed products that have been crushed or crushed are further sorted according to their size (particle size). doing.

The sieving machine is composed of a tubular rotating drum having a large number of through holes on the side surface, which is used sideways, and the processed object is passed through the through holes while rotating the rotating drum around the cylinder axis. It is divided into those that do not pass through the through holes (see, for example, Patent Documents 1 to 4).

Japanese Unexamined Patent Publication No. 2004-154719 (see paragraph 0012 on page 3, FIG. 1, etc.) Japanese Unexamined Patent Publication No. 2012-1330877 (see paragraph 0042 of page 10, FIG. 5, etc.) Japanese Unexamined Patent Publication No. 2015-134317 (see paragraph 0018 of page 4, FIG. 1, etc.) Japanese Unexamined Patent Publication No. 2004-298835 (see paragraph 0011 on page 3, FIG. 1, etc.)

In the sieving machine equipped with the above-mentioned rotary drum, the processed material is sorted into those that pass through the through holes of the rotary drum and those that do not pass through the through holes, that is, sort in two stages (two types) according to the particle size. be able to.

However, in this device, in order to change the boundary of the particle size that sorts the processed material in two stages, the net attached to the rotating drum must be changed to another net with a different size of through hole. There's a problem. It takes time and effort to replace the net, and it is not preferable in terms of operation to stop the equipment each time it is replaced.

Therefore, an object of the present invention is to make it possible to easily change the boundary of the particle size of the sorted product when the processed product is sorted by a sieving machine equipped with a rotating drum.

In order to solve the above problems, the present invention includes a first rotating drum having a first through-hole group and a second through-hole group having a maximum diameter smaller than that of the first through-hole group. A second rotating drum, a charging unit for charging the processed material into the first rotating drum, and a first discharging unit for discharging the processed material that is charged from the charging unit and does not pass through the first through-hole group. , Passing through the first through-hole group and the second through-hole group to discharge the processed material that passes through the first through-hole group and does not pass through the second through-hole group. The third discharge unit that discharges the processed material and the processed material discharged from the second discharge unit are selectively directed to at least the first chute on the first discharge unit side or the second chute on the third discharge unit side. A sieving machine equipped with a switching means having a guiding function was adopted.

At this time, another rotating drum is arranged between the outer peripheral surface of the first rotating drum and the inner peripheral surface of the second rotating drum, and the other rotating drum has the maximum diameter of the first through-hole group. A large-diameter discharge group having a maximum diameter between the maximum diameter of the second through-hole group is provided, and the second discharge unit discharges a processed material that does not pass through the through-hole group of the other rotating drum. The switching means is divided into a unit and a small-diameter discharge unit that discharges a processed material that passes through the through-hole group of the other rotary drum, and the switching means collects the processed material discharged from the large-diameter discharge unit and the small-diameter discharge unit. Guide the processed material discharged to either the first chute or the second chute, or the processed material discharged from the large-diameter discharge part to the first chute, and the processed material discharged from the small-diameter discharge part to the second chute. A configuration having a function can be adopted.

In each of these aspects, the switching means can adopt a configuration having a function of guiding the processed material discharged from the second discharge unit to the first chute and a third chute different from the second chute. ..

In each of these aspects, the second rotating drum is arranged on the outer periphery of the first rotating drum, the input portion is arranged at one axial end of the inner peripheral portion of the first rotating drum, and the first discharging portion is The second discharge portion is arranged at one end or the other end in the axial direction of the inner peripheral portion of the first rotary drum, and the second discharge portion is in the axial direction between the outer peripheral surface of the first rotary drum and the inner peripheral surface of the second rotary drum. It is possible to adopt a configuration in which the third discharge portion is arranged at one end or the other end and is arranged on the outer peripheral portion of the second rotating drum.

Further, the switching means can adopt a configuration in which the processed material discharged from the second discharge unit is guided by the guide plate operated by the actuator.

In the present invention, a first rotating drum and a second rotating drum having through holes having different diameters are used, and the processed material is divided into a first discharge part, a second discharge part, and a third discharge part in order according to the particle size. Since the processed material discharged from the second discharge part is guided to the first discharge part side and the third discharge part side by the switching means, the particle size of the processed material is sorted and discharged. You will be able to easily change the boundaries of.

Longitudinal sectional view showing an embodiment of the present invention Enlarged view of the main part of FIG. (A) is an enlarged view of the main part of another embodiment, and (b) is a reference view. Enlarged view of the main part showing still another embodiment

An embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, this embodiment is provided on the downstream side of a ball mill M for crushing a processed product using a large number of balls N, and the processed product that has been crushed by the ball mill M is further reduced in size (grains). It is a rotary drum type sieving machine 1 that sorts according to the diameter).

In the ball mill M, the rotational force from the drive source D of the motor or the like is transmitted to the mill body through the roller R, and the mill body rotates. Due to the rotation of the mill body, the balls N housed inside collide with the processed material, and the processed material is finely crushed. The crushed processed product is sent from the mill discharge unit to the sieve machine 1.

In the configuration of the sieving machine 1, a plurality of tubular rotary drums 10 and 20 provided with a large number of through holes 11 and 21 on the side surfaces are used with their tubular axial directions oriented sideways, and each rotary drum 10 and 20 is used as a tubular shaft. While rotating around, the processed material is sorted into those that pass through the through holes 11 and 21 and those that do not pass through the through holes 11 and 21.

In this embodiment, two rotating drums 10 and 20 are used. Specifically, the first rotating drum 10 having the first through-hole group 11 and the second rotating drum 20 having the second through-hole group 21 arranged on the outer periphery of the first rotating drum 10 are provided. I have.

The maximum diameter of the through hole of the first through hole group 11 of the first rotating drum 10 is w1, and the maximum diameter of the through hole of the second through hole group 21 of the second rotating drum 20 is w2 (w2 <w1). It has become. The diameters of the through holes of the first through hole group 11 are all unified with the maximum diameter w1, and the diameters of the through holes of the second through hole group 21 are also unified with the maximum diameter w2.

Further, in this embodiment, the two rotating drums 10 and 20 are coaxial, and the cylinder shaft of the first rotating drum 10 and the cylinder shaft of the second rotating drum 20 are positioned in a straight line. The positional relationship between the shafts may be changed according to the specifications and application of the sieving machine.

At one end of the first rotating drum 10 in the tubular axis direction, a charging portion 2 for charging a processed object into the inner peripheral portion (space inside the first rotating drum 10) of the first rotating drum 10 is arranged. .. The charging section 2 is connected to the mill discharging section of the ball mill M.

The processed material charged from the charging unit 2 is divided into a processed material that does not pass through the first through-hole group 11 and a processed material that passes through the first through-hole group 11. The processed material that does not pass through the first through-hole group 11 is discharged from the first discharge portion A provided at the other end of the inner peripheral portion of the first rotary drum 10 in the tubular axis direction. The processed material that has passed through the first through-hole group 11 moves to the inner peripheral portion of the second rotating drum 20 (the space between the outer peripheral surface of the first rotating drum 10 and the inner peripheral surface of the second rotating drum 20). To do.

The first discharging portion A may be arranged on the same side as the charging portion 2 in the inner peripheral portion of the first rotating drum 10, that is, at one end in the tubular axis direction. In this case, at one end of the inner peripheral portion of the first rotating drum 10 in the tubular axis direction, the charging portion 2 may be arranged on the upper side and the first discharging portion A may be arranged on the lower side.

The processed product that has moved to the inner peripheral portion of the second rotating drum 20 is divided into a processed product that does not pass through the second through-hole group 21 and a processed product that passes through the second through-hole group 21. The processed material that does not pass through the second through-hole group 21 is discharged from the second discharge portion B provided at the other end of the inner peripheral portion of the second rotating drum 20 in the tubular axis direction.

In this embodiment, one end in the tubular axial direction of the inner peripheral portion of the second rotating drum 20 is closed by the end face plate 3, but the second discharging portion B is the cylinder of the inner peripheral portion of the second rotating drum 20. It may be arranged at one end in the axial direction.

The processed material that has passed through the second through-hole group 21 is discharged to the outer peripheral portion of the second rotating drum 20 (outside the outer peripheral surface of the second rotating drum 20). The outer peripheral portion of the second rotating drum 20 is referred to as a third discharge portion C of the processed material. The processed material that has passed through both the first through-hole group 11 and the second through-hole group 21 is discharged from the third discharge unit C. That is, the particle size of the processed material discharged from each discharge unit is the first discharge unit A (particle size ≥ w1), the second discharge unit B (w1> particle size ≥ w2), and the third discharge unit C (w2>. Particle size).

In the second discharge section B, the processed material discharged from the second discharge section B is selectively transferred to at least the first chute X on the first discharge section A side or the second chute Y on the third discharge section C side. A switching means 30 having a guiding function is provided.

In this embodiment, the switching means 30 uses the guide plate 31 operated by the actuator 32 to discharge the processed material discharged from the second discharge unit B into the first chute X or the third discharge unit C on the first discharge unit A side. It can be selectively guided to the second shoot Y on the side. The processed material guided to the first discharge unit A side by the switching means 30 moves to the next process through the first chute X together with the processed material discharged from the first discharge unit A. Further, the processed material guided to the third discharge unit C side by the switching means 30 moves to the next process through the second chute Y together with the processed material discharged from the third discharge unit C.

In this way, the processed material discharged from the second discharge section B is selectively guided to the first chute X on the first discharge section A side or the second chute Y on the third discharge section C side, thereby causing the sieving machine. The boundary of the particle size of the processed product selected into two in 1 can be easily switched between w1 and w2. As a result, it is not necessary to replace the net of the rotating drum when changing the particle size of the sorting.

That is, if the switching means 30 is switched to the first discharge unit A side, the boundary of the particle size of the processed material sorted into the two groups becomes the maximum diameter w1 of the through hole 11 of the first rotating drum 10, and the switching means 30 Is switched to the third discharge unit C side, the boundary of the particle size of the processed products sorted into the two groups becomes the maximum diameter w2 of the through hole 21 of the second rotating drum 20.

As the actuator 32, various actuators such as an electric actuator in which the rod moves forward and backward when energized, a fluid actuator in which the rod moves forward and backward due to the pressure of the fluid, and the like can be adopted. Further, as the drive source of the switching means 30, a driving force of a motor or an internal combustion engine may be adopted in addition to the actuator for advancing and retreating the rod. Further, an operation unit for manually operating the guide plate 31 may be provided.

Further, the input portion 2 has a third maximum diameter larger than the through hole of the first through hole group 11 and a diameter that does not allow the ball N to pass through (the maximum diameter is w0. The ball diameter ≥ w0). A ball catching means 5 having a through-hole group 5a is provided. By providing the ball catching means 5, the ball N is suppressed from entering the sieving machine 1. When the ball N is worn and the particle size is reduced, the ball N passes through the through hole of the third through hole group 5a. However, since the ball N is a magnetic material such as iron, it can be separated from the processed material by utilizing the magnetic force of the magnet thereafter. For example, if the diameter of the ball N that has passed through the through hole of the third through hole group 5a is w0> ball diameter> w1, the ball N is discharged from the first discharge unit A together with the processed material. The balls N are appropriately replenished in the ball mill M.

In this embodiment, the first rotary drum 10 and the second rotary drum 20 have a tapered shape in which the inner diameter gradually expands toward the discharge portions A and B provided at the ends in the tubular axis direction, respectively. Since the bottom surface has a downward slope toward each of the discharge portions A and B, the discharge of the processed material is promoted. Further, the watering device 4 arranged on the inner peripheral portion of the first rotating drum 10 makes it easy for the processed material to pass through the through holes 11 and 21 and easily head toward the discharge portions A and B at the end in the tubular axis direction. Is considered.

Further, in this embodiment, two rotating drums, a first rotating drum 10 and a second rotating drum 20, are used to form three discharge parts, a first discharge part A, a second discharge part B, and a third discharge part C. The structure is set so that the processed material discharged from the second discharge part B having an intermediate particle size is switched to the first discharge part A side having a large particle size or the third discharge part C side having a small particle size, for example. , The number of rotating drums used can be three or more. As a result, the boundary of the particle size to be set can be set in a wider range in multiple stages.

For example, apart from the first rotating drum 10 and the second rotating drum 20, another rotating drum (third rotating drum) is arranged between the first rotating drum 10 and the second rotating drum 20, and the third rotating drum is arranged. The maximum diameter of the third through-hole group provided in the above is set to w3 between the maximum diameter w1 of the first through-hole group and the maximum diameter w2 of the second through-hole group (w1> w3> w2). As a result, the particle size of the processed material discharged from each discharge part is set to the first discharge part A (particle size ≥ w1) located on the innermost side and the third discharge part C (w2>) located on the outermost side. The second discharge part B located in the middle of the second discharge part B is set as the particle size), and the large diameter discharge part (w1> particle size ≥ w3) and the small diameter discharge part (w3> particle size) are set according to the particle size of the processed product. Divide into two parts of ≧ w2).

Then, regarding the processed material discharged from the second discharge part B, both the large diameter discharge part (w1> particle size ≧ w3) and the small diameter discharge part (w3> particle size ≧ w2) are both the large diameter discharge part A. Switch to the (particle size ≧ w1) side or the third discharge part C (w2> particle size) side of the small diameter particle size, or only the processed material discharged from the large diameter discharge part (w1> particle size ≧ w3). (1) A configuration in which only the processed material discharged from the discharge unit A (particle size ≥ w1) and the small diameter discharge unit (w3> particle size ≥ w2) is switched to the small diameter third discharge unit C (w2> particle size) side. Therefore, the boundary of the particle size of the processed product sorted into two by the sieving machine 1 can be easily switched to three stages of w1, w3, and w2.

Another embodiment is shown in FIG. 3 (a). In this embodiment, the switching means 30 has a function of guiding the processed material discharged from the second discharge unit B to a third chute Z different from the first chute X and the second chute Y. is there.

That is, the switching means 30 selects the processed material discharged from the second discharge part B having an intermediate particle size among the three discharge parts of the first discharge part A, the second discharge part B, and the third discharge part C. , The setting is to switch to the first chute X on the first discharge part A side of the large diameter particle size or the second chute Y on the third discharge part C side of the small diameter particle size (hereinafter referred to as "selection setting"). As a further additional switching function, a setting for switching the processed material discharged from the second discharge unit B so as to be guided to a third chute Z different from the first chute X and the second chute Y (hereinafter, "independent setting"". ). As a result, as in the case of the reference example shown in FIG. 3 (b), the processed material discharged from the second discharge unit B is screened independently of the first discharge unit A and the third discharge unit C. It can also be set.

As a specific configuration of the switching means 30, for example, in FIG. 3A, the processed material discharged from the second discharge unit B is the first chute X on the first discharge unit A side having a large diameter or the particle size. The first switching means 30a for switching to the second chute Y on the third discharge portion C side of the small diameter particle size, the second switching means 30b provided below (downstream side) of the first switching means 30a, and the third. It is configured to include the switching means 30c.

The first switching means 30a, the second switching means 30b, and the third switching means 30c are guided by the guide plates 31a, 31b, 31c operated by the actuator 32, respectively, as in the above-described embodiment. It can be configured to set the direction to be taken.

Partition walls 41 and 42 are provided on both sides of the first switching means 30a. Further, a partition wall 43 is provided between the second switching means 30b and the third switching means 30c.

First, in the selection setting, the guide plate 31b of the second switching means 30b is in a state in which the tip thereof is tilted toward the central partition wall 43 as shown by a chain line in the drawing. Further, the guide plate 31c of the third switching means 30c is also in a state in which the tip thereof is tilted toward the partition wall 43.

In this selection setting, when the processed material from the second discharge unit B is set to be guided to the first chute X, the first switching means 30a is set on the first discharge unit A side, that is, the guide plate 31a. It is assumed that the tip of the above is tilted toward the partition wall 42 on the right side in the drawing. As a result, the processed material from the second discharge unit B is guided to the first chute X on the left side of the partition wall 41 by the guide plate 31b of the second switching means 30b. At this time, the guide plate 31c of the third switching means 30c may be located away from the partition wall 43 side as shown by the solid line in the figure.

Further, in the selection setting, when the processed material from the second discharge unit B is set to be guided to the second chute Y, the first switching means 30a is set on the third discharge unit C side, that is, the guide plate. It is assumed that the tip of 31a is tilted toward the partition wall 41 on the left side in the drawing. As a result, the processed material from the second discharge unit B is guided to the second chute Y on the right side of the partition wall 42 by the guide plate 31c of the third switching means 30c. At this time, the guide plate 31b of the second switching means 30b may be located away from the partition wall 43 side as shown by the solid line in the figure.

Next, in the independent setting, the tip of the guide plate 31b of the second switching means 30b is set at a position (upright state) away from the central partition wall 43 side, as shown by a solid line in the drawing. Further, the guide plate 31c of the third switching means 30c is also set at a position where the tip thereof is separated from the partition wall 43 side (upright state).

As a result, the processed material from the second discharge unit B passes through the space sandwiched between the guide plate 31b of the second switching means 30b and the guide plate 31c of the third switching means 30c, and is between the partition walls 41 and 42. Guided to the third shoot Z. At this time, the guide plate 31a of the first switching means 30a may be tilted toward the partition wall 42 shown by the solid line in the figure, or may be tilted toward the partition wall 41 shown by the chain line in the figure. Good. Alternatively, the guide plate 31a may be at an intermediate position (upright state) between the position indicated by the solid line in the figure and the position indicated by the chain line in the figure.

Further, another embodiment is shown in FIG. In this embodiment, the switching means 30 has a function of guiding the processed material discharged from the second discharge unit B to a third chute Z different from the first chute X and the second chute Y. It is the same as the embodiment of.

The switching means 30 makes a large amount of the processed material discharged from the second discharge part B having an intermediate particle size among the three discharge parts of the first discharge part A, the second discharge part B, and the third discharge part C. A selection setting is made to switch to the first chute X on the first discharge part A side of the diameter particle size or the second chute Y on the third discharge part C side of the small diameter particle size, and as a further additional switching function, the second discharge part The processed material discharged from B can be set independently so as to be guided to a third chute Z different from the first chute X and the second chute Y.

As shown in FIG. 4, the switching means 30 uses the processed material discharged from the second discharge unit B as the first chute X on the side of the first discharge unit A having a large diameter or the third discharge unit having a small diameter. The configuration includes a fourth switching means 30d for switching to the second chute Y on the C side, and a fifth switching means 30e provided below (downstream side) of the fourth switching means 30d.

The fourth switching means 30d and the fifth switching means 30e may be configured to set the direction in which the processed object is guided by, for example, the guide plates 31d and 31e operated by the actuator, respectively, as in the above-described embodiment. it can. Further, partition walls 41 and 42 are provided on both sides of the fourth switching means 30d and the fifth switching means 30e.

In the selection setting, when the processed material from the second discharge unit B is set to be guided to the first chute X, the fourth switching means 30d is set on the first discharge unit A side, that is, the guide plate 31d. It is assumed that the tip is tilted toward the partition wall 42 on the right side in the drawing. As a result, the processed material from the second discharge unit B is guided to the first chute X on the left side of the partition wall 41 by the guide plate 31d of the fourth switching means 30d. At this time, the guide plate 31e of the fifth switching means 30e may be at any position.

Further, in the selection setting, when the processed material from the second discharge unit B is set to be guided to the second chute Y, the fourth switching means 30d and the fifth switching means 30e are set on the third discharge unit C side. That is, the tip of the guide plate 31d is in an upright state along the partition wall 41 side on the left side in the drawing, and the tip of the guide plate 31e is in a state in which the tip is tilted toward the partition wall 41 side on the left side in the drawing. As a result, the processed material from the second discharge unit B is guided to the second chute Y on the right side of the partition wall 42 by the guide plate 31e of the fifth switching means 30e.

Next, in the independent setting, the tip of the guide plate 31d of the fourth switching means 30d is in an upright state along the partition wall 41 side on the left side in the drawing, and the guide plate 31e of the fifth switching means 30e is also the tip thereof. Is in an upright state along the partition wall 42 side on the right side in the figure.

As a result, the processed material from the second discharge unit B passes through the space sandwiched by the guide plate 31d of the fourth switching means 30d, the guide plate 31e of the fifth switching means 30e, and the partition walls 41 and 42. , Is guided to the lower third chute Z between the partition walls 41 and 42.

In the above embodiment, the sieve machine 1 is provided on the downstream side of the ball mill M, but the present invention is not limited to this embodiment, and the device arranged on the upstream side or the downstream side of the sieve machine 1 depends on the application and specifications. Can be selected as appropriate. For example, another type of crusher such as a rod mill or a discharge unit of a crusher may be connected to the charging unit 2 of the sieving machine 1 to charge the processed product into the sieving machine 1. In particular, the function of the sieving machine 1 for sorting into several kinds of particle sizes as in the present invention is suitable for processed products from a rod mill used for coarser crushing than a ball mill M.

1 Sieve machine 2 Input part 3 End face plate 10 First rotary drum 11 First through-hole group 20 Second rotary drum 21 Second through-hole group 30 Switching means 31 Induction plate 32 Actuators 41, 42, 43 Partition A First Discharge unit B 2nd discharge unit C 3rd discharge unit X 1st chute Y 2nd chute Z 3rd chute

Claims (6)

A first rotating drum (10) with a first through-hole group (11) and
A second rotating drum (20) having a second through-hole group (21) having a maximum diameter smaller than that of the first through-hole group (11).
The charging section (2) for charging the processed material into the first rotating drum (10),
A first discharge unit (A) that discharges a processed material that is charged from the charging unit (2) and does not pass through the first through-hole group (11).
A second discharge unit (B) that discharges a processed material that passes through the first through-hole group (11) and does not pass through the second through-hole group (21).
A third discharge unit (C) for discharging the processed material that has passed through the first through-hole group (11) and the second through-hole group (21).
The processed material discharged from the second discharge part (B) is sent to at least the first chute (X) on the first discharge part (A) side or the second chute (Y) on the third discharge part (C) side. A switching means (30) separated from the first rotating drum (10) having a function of selectively guiding the drum (10).
Sieve machine equipped with. The input portion (2) is connected to a mill discharge portion of a ball mill (M) accommodating a plurality of balls (N) inside.
A third through-hole group (5a) having a diameter larger than that of the first through-hole group (11) and having a diameter that does not allow the ball (N) to pass through the input portion (2). The ball catching means (5) is provided.
The sieving machine according to claim 1. Another rotating drum is arranged between the outer peripheral surface of the first rotating drum (10) and the inner peripheral surface of the second rotating drum (20).
The other rotary drum comprises a through-hole group having a maximum diameter between the maximum diameter of the first through-hole group (11) and the maximum diameter of the second through-hole group (21).
The second discharge unit (B) is a large-diameter discharge unit that discharges a processed product that does not pass through the through-hole group of the other rotary drum, and a small-diameter discharge unit that discharges a processed product that passes through the through-hole group of the other rotary drum. Divided into parts,
The switching means (30) discharges the processed material discharged from the large-diameter discharge unit and the small-diameter discharge unit to either the first chute (X) or the second chute (Y), or the large-diameter discharge unit. The sieving machine according to claim 1 or 2 , which has a function of guiding the processed material discharged from the unit to the first chute (X) and the processed material discharged from the small-diameter discharge unit to the second chute (Y). .. The switching means (30) has a function of guiding the processed material discharged from the second discharge unit (B) to a third chute (Z) different from the first chute (X) and the second chute (Y). The sieving machine according to any one of claims 1 to 3. The second rotating drum (20) is arranged on the outer circumference of the first rotating drum (10).
The charging portion (2) is arranged at one end in the axial direction of the inner peripheral portion of the first rotating drum (10).
The first discharging portion (A) is arranged at one end or the other end in the axial direction of the inner peripheral portion of the first rotating drum (10).
The second discharging portion (B) is arranged at one end or the other end in the axial direction between the outer peripheral surface of the first rotating drum (10) and the inner peripheral surface of the second rotating drum (20).
The sieving machine according to any one of claims 1 to 4 , wherein the third discharging portion (C) is arranged on the outer peripheral portion of the second rotating drum (20). The sieve according to any one of claims 1 to 5 , wherein the switching means (30) guides a processed product discharged from the second discharge unit (B) by a guide plate (31) operated by an actuator (32). Machine.

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