JP2670988B2 - Discharge device with sieve for adhesive raw material and method for discharging sieve from adhesive raw material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dispensing apparatus with a sieve for an adhesive material and a method for dispensing an adhesive material sieve suitable for use in coarse scalping of raw materials such as ore and limestone. Specifically, by arranging roll screens with rotating rollers for sieving and paying out one on top of the other, it is possible to screen raw materials into products of multiple sizes. The present invention relates to an apparatus and a method for dispensing an adhesive raw material screen.

[0002]

2. Description of the Related Art Raw materials such as limestone are sieved after being mined and then finely crushed to finish products. Conventionally, such sieving and dispensing of raw materials have been carried out by a comb tooth-shaped sieve (grid river) or a mesh-shaped sieve. This sieving step also plays a role in extracting powder such as mud and clay contained in the raw material. When the raw material contains a large amount of powder such as mud and clay, the crushing efficiency of the raw material decreases due to the buffering action of the powder when the raw material is crushed, and the powder crushing device (crusher), etc. Entering the gap between each component of the equipment,
It is necessary to remove these powders as they may cause a failure.

Aside from this, a roll screen in which a plurality of rotating rollers are arranged at appropriate intervals is used for sieving and dispensing the raw material. Roll screens have features such as mass processing, energy saving, and space saving. In this roll through clean, the powder component attached to the rotating roller is scraped off by the following self-cleaning action of the rotating roller.

The self-cleaning action means that a coarse material having a size close to the interval between the rotating rollers is rotated between the adjacent rotating rollers and is rotated by the rotation of the rotating rollers to the side opposite to the rotating rollers, and is rotated at the tip thereof. The powder adhering to the roller is scraped off, or the powder adhering to the rotating roller is scraped off due to a sharp angle of the raw material when the raw material flows.

[0005]

However, in a conventional grizzly river or mesh screen, powder contained in the raw material adhering to the grizzly river or mesh is scraped off with a stick or the like. Depending on the amount of water, it is unavoidable that the powder adheres, and there is a problem that the sieving performance is remarkably deteriorated and the equipment at the subsequent stage is broken.

Further, although the conventional roll screen has a self-cleaning action, like the grizzly river and the mesh, depending on the particle size and the water content of the powder, the rotating roller itself,
Or, the raw materials are clogged between the rotating rollers, and in the worst case, the gap between the rotating rollers is clogged. There was a risk that stable plant operation would not be possible.

[0007] Therefore, an object of the present invention is to solve the above-mentioned problems, and it is possible to prevent powder from adhering to lower the sieving performance, or to cause failure due to the flow of powder to the downstream equipment. An object of the present invention is to provide a dispensing device with an adhering raw material sieving machine and an adhering raw material sieving and dispensing method that can prevent the above.

[0008]

The above object of the present invention is to provide a hopper for accumulating and appropriately discharging the adhesive raw material supplied from the outside, and a pan deck vibrating to convey the raw material discharged from the hopper. In order to screen the raw material conveyed by the pan deck, a plurality of rows of roll screens in which rows of a plurality of rotating rollers are arranged one above the other with different sieve meshes, and an oscillating means for vibrating the rotating rollers are provided. This can be achieved by a dispensing device with a sieving machine for adhesive raw materials, which is characterized by being equipped.

Further, the above object of the present invention is to supply an adhesive raw material supplied from the outside by a supply means to the vibrating pan deck, and convey the raw material discharged from the hopper by the vibrating pan deck. Then, after that, by a roll screen of a plurality of rows of different sieve meshes arranged rows of a plurality of oscillating rotary rollers are vertically stacked, the raw material supplied from the pan deck is sieved It can also be achieved by a sieve dispensing method.

[0010]

In the present invention, the rotating roller of the roll screen vibrates, so that the combined action of the rotating motion and the vibration works, and the friction caused by the relative motion between the raw material sent from the pan deck to the roll screen and the rotating roller is large. Become. This effectively separates dust particles such as mud and clay that are attached to the rotating roller, contained between the raw materials, and attached to the rough stone in the raw material from the rotary roller and the rough stone. And sieved. Therefore, clogging of the rotating roller can be prevented.

Furthermore, because of this, clogging is effectively prevented in the plurality of rows of roll screens arranged above and below, so that the raw material is reliably sieved by the roll screens arranged on the upper side, The raw material screened on the upper stage side can be further screened on a roll screen having different screen meshes arranged on the lower stage side, and the function of changing the mesh screen can be sufficiently exerted.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a dispensing apparatus with a sieve for an adhesive material and a method for dispensing an adhesive material sieve according to the present invention will be described in detail with reference to FIGS. FIG. 1 is a side view showing a dispensing device with a sieving machine for adhesive raw materials according to the present invention, FIG. 2 is a view taken in the direction of arrow A in FIG. 1, and FIG. 3 is the size of sieve meshes of an upper rotary roller and a lower rotary roller. FIG. 4 is a view showing a driving method of the rotary roller, FIG. 5 is a view taken in the direction of arrow B in FIG. 1, and FIG. 6 is a view showing an operation of the dispensing device with a sieving machine for adhesive raw materials.

As shown in FIG. 1, the dispensing device 1 with a sieve for adherent raw material according to the present invention is provided with a hopper 11 for accumulating and discharging a raw material 37 (FIG. 6) supplied from the outside, A pan deck 12 is disposed on the discharge side. The pan deck 12 is for transporting the raw material 37, and as shown in FIG. 2, a flat plate 14 having a high rear end is provided on the frame 13 to prevent the raw material 37 from falling.

A multi-bed type roll screen 15 is arranged on the discharge side of the pan deck 12. Although a two-bed type roll screen 15 is shown in FIG. 1, a three-bed type or more can be used. The multi-bed type roll screen 15 is for sieving and discharging the raw material 37, and a plurality of rotating rollers 16A are arranged at predetermined intervals on the upper stage. Also, a plurality of rotating rollers 16
B are arranged at predetermined intervals.

As shown in FIG. 3, in the multi-floor type roll screen 15, a plurality of circumferential grooves 19A and 19B having the same width are provided on the upper rotary roller 16A and the lower rotary roller 16B, respectively. The circumferential grooves 19A, 19B of the rotary rollers 16A, 16B are aligned and arranged along the flow direction of the raw material 37, and the adjacent rotary rollers 16A, 16A,
16B, 16B circumferential grooves 19A, 19A, 19B, 19
The gaps 20A and 20B formed by B serve as sieves. Here, the gap 20B which is the sieve mesh of the lower rotating roller 16B is smaller than the gap 20A which is the sieve mesh of the upper rotating roller 16A.

That is, the rough stone in the raw material 37, which is larger than the sieve mesh (gap 20A) of the upper rotary roller 16A, is conveyed to the end by the rotary roller 16A and is discharged, and the rough stone in the raw material 37 (gap 20A). The small rough stones and powders such as mud and clay fall through the sieve mesh (gap 20A) to the lower rotary roller 16B side. Further, of the raw material 37 that has dropped to the lower rotation roller 16B side, rough stones larger than the sieve mesh (gap 20B) are conveyed to the end by the rotation roller 16B and discharged, and the sieve mesh (gap 20G).
B) Smaller coarse stones, powders, etc. fall from the rotating roller 16B downward and are sieved.

These rotating rollers 16A and 16B are provided with side portions 17 and 1 for supporting the pan deck 12 as shown in FIG.
8 is rotatably attached directly or via a bearing. Pan deck 12 and multi-bed roll screen 15
In order to prevent the upper raw material 37 from falling to the side,
The upper ends of the side portions 17 and 18 are higher than the pan deck 12 and the multi-floor roll screen 15.

Oscillating means, eccentric plates 21 and 22 in this example, are arranged on the side portions 17 and 18 on both sides of the pan deck 12. Rotation centers of the eccentric plates 21 and 22 that are offset from the center of gravity 39 are attached to both ends of a rotation shaft 23 that is rotatably attached to the side portions 17 and 18. A pulley 24 is mounted outside the eccentric plate 22 on one side of the rotating shaft 23.

On the other hand, a motor 25 is arranged at the lower left of the eccentric plate 22 in the figure. On the rotating shaft 26 of the motor 25,
A pulley 27 is attached. A belt 28 is wound around a pulley 24 of the center shaft 23 and a pulley 27 of the motor 25. Thus, the eccentric plates 21 and 22 are driven to rotate by the motor 25. Since the center of rotation of the eccentric plates 21 and 22 is displaced from the center of gravity 39, the eccentric plates 21 and 22 rotate to rotate the side portions 17 and 18, and thus the pan deck 12 and the multi-floor roll screen 1 integrated with the pan deck 12.
The vibration is generated in the fifth rotating rollers 16A and 16B.

In the above description of the oscillating means and the structure shown in the figure, the vibration is actually a rotary motion, and since the material cannot be dispensed well, the vibration is designed to be a linear motion. This is configured so that, for example, the rotary shaft is divided into two shafts, and they are rotated in opposite directions via gears or the like so as to generate a linear motion. Upper and lower rotating rollers 16A on the outflow end side of the multi-bed type roll screen 15
6B includes a motor 29A disposed outside the side portion 18,
29B (only one motor 20A is shown in FIG. 2) is connected via a universal joint, for example, universal joints 30A and 30B (only one is shown). By using the universal joints 30A and 30B, even if the rotary rollers 16A and 16B vibrate, the motors 29A and 2B
The rotation force of 9B can be reliably transmitted to the rotation rollers 16A and 16B.

As shown in FIG. 4, each of the rotating rollers 16A, 16 is provided with one sprocket 31 or two integrated sprockets 32, 33 on the end side. That is, the rotating rollers 16A and 16B at the inflow end are provided with one sprocket 31 on only one side. The second rotating roller 16A, 16B from the inflow end is provided with one sprocket 31 only on the side opposite to the rotating roller 16A, 16B at the inflow end. The rotating rollers 16A and 16B at the outflow end are provided with one sprocket 31 on each side. The intermediate rotating rollers 16A and 16B other than those described above are provided with two sprockets 32 and 33 on one side at appropriate intervals. These sprockets 32, 33 are connected to the rotating rollers 16A,
16B is provided on the same side for every other one.

One sprocket 31 of the rotary rollers 16A, 16B on the outflow end side, which is directly driven by the motors 29A, 29B, the lower sprocket 31 in the figure, and one rotary roller 16A, 16B. A chain 34 is wound around the inner sprocket 32. Sprocket 33 outside this sprocket 32
A chain 34 is wound around the sprocket 31 of the rotating rollers 16A and 16B, which are placed one by one.

The rotating rollers 16A, 16B at the outflow end
Of the other sprocket 31 and the adjacent rotating roller 16
A, the sprocket 32 inside the 16B, the chain 3
4 are wound. The sprocket 33 outside the sprocket 32 and the rotating rollers 16A, 1
A chain 34 is wound around the outer sprocket 33 of 6B. Further, the sprocket 32 inside the sprocket 33 and the rotary rollers 16A, 16 at the outflow end.
A chain 34 is wound around the B sprocket 31.

The number of teeth of the sprockets 31, 32, 33 is set so that the rotational speed gradually increases from the inflow end rotary rollers 16A, 16B to the outflow end side rotary rollers 16A, 16B. As a result, the raw material 37 can be reliably discharged by the plurality of rotating rollers 16A and 16B. Immediately below each of the rotary rollers 16A and 16B, a cleaner 36 that holds a predetermined gap 35 between the rotary rollers 16A and 16B is arranged as shown in FIG.
The cleaner 36 is formed in a comb shape with a flat plate. The cleaner 36 compulsorily scrapes off the powder components such as mud and clay adhering to the rotating rollers 16A and 16B.
The gap 35 can be easily adjusted according to the required particle size of the raw material 37 to be recovered, the raw material moisture, and the like.

Next, the operation of the dispensing device 1 for the adhesive raw material sieving machine will be described. As shown in FIG. 6, the raw material 37 accommodated in the hopper 11 is discharged to the pan deck 12. The pan deck 12 is vibrated in the direction from the lower left side to the upper right side in the figure by the rotation of the eccentric plate 22,
Thereby, the raw material 37 is supplied to the multi-bed roll screen 15.
Transported to the side. The transport amount of the raw material 37 of the pan deck 12 can be adjusted by changing the frequency or the amplitude.

Raw material 3 conveyed by pan deck 12
7 is supplied to the upper rotary roller 16A of the multi-bed type roll screen 15. Since the rotation speed of the upper rotary roller 16A is gradually increased from the inflow side to the discharge side, the rough stone in the raw material 37 larger than the gap 20A (sieve mesh) between the circumferential grooves 19A is reliably conveyed. Paid out. Rough stones and powder in the raw material 37 smaller than the gap 20A are
It falls from 0A and is supplied to the lower rotating roller 16B side.

Similar to the upper rotary roller 16A, the lower rotary roller 16B has the rotational speed gradually increased from the inflow side to the outflow side, and the raw material 37 larger than the gap 20B (mesh) of the circumferential groove 19B. Is transported to the end and paid out. The raw material 37 smaller than the gap 20B
And fall down. Here, from the gap 20A between the upper rotary roller 16A, the lower rotary roller 16B
Is smaller, the upper rotating roller 16
The product 40B delivered from the lower rotary roller 16B is smaller than the product 40A delivered from A.
That is, products 40A and 40B having different sizes can be obtained at the same time.

Further, adjacent rotating rollers 16A, 16B
Since there is a difference in the number of rotations, the rough stone in the raw material 37, which is slightly larger than the gaps 20A and 20B and remains between the rotating rollers 16A and 16B, rotates to the opposite side of the rotating rollers 16A and 16B. At this time, the friction between the remaining rough stone and the rotary rollers 16A and 16B on both sides of the rough stone increases,
The corners of the rough are cut off and the rough becomes smaller. As a result, the remaining raw material 37 is dropped and removed from the gaps 20A and 20B. Also, rough stones and rotating rollers 16A,
Due to the friction with 16B, dust particles such as mud and clay adhered to the rotating rollers 16A and 16B and the rough stones are scraped off. Therefore, the rotary rollers 16A and 16B are not clogged, and the products 40A and 40B have a preset size.

The vibration applied to the pan deck 12 for conveying the raw material 37 is also applied to the rotary rollers 16A and 16B of the multi-bed type roll screen 15. This vibration acts to push the raw material 37 in the discharge direction,
The raw material 37 is given a rotating and flying motion. As described above, since the rotary rollers 16A and 16B are vibrating and rotating, the vibration and the rotary motion are combined, and the raw material 37
The relative motion between the rotating roller 16A and the rotating roller 16B becomes large, the raw material 37 is sandwiched between the rotating rollers 16A and 16B, and powder such as mud and clay is transferred to the raw material 37 and the rotating roller 16A and 16B. Adherence can be prevented. As a result, the dispensed ore hardly contains any powder, so that the powder invades each part of the next step, for example, a crushing device, and breaks down. It is possible to prevent a decrease.

When the powder content contained in the raw material 37 changes, especially when the fine particles and the water content increase, the self-cleaning action of the powder content cannot be expected, and the powder content adhered to the rotary rollers 16A and 16B increases. In this case, the rotating rollers 16A, 16B
The powder adhering to the is scraped off by the cleaner 36 and is forcibly removed, so that it is possible to prevent the screening performance from deteriorating.

As described above, in the dispensing device 1 with a sieving machine for adhesive raw materials according to the present invention, the multi-bed type roll screen 15 is used for sieving and dispensing the raw material 37, and the rotary rollers 16A, 16B at each stage. However, since the raw material 37 does not stay between the rotating rollers 16A and 16B, the products 40A and 40B having different sizes do not stay between the rotating rollers 16A and 16B.
The sieving and dispensing can be reliably performed in a small space.

Further, the rotation and vibration of the rotating rollers 16A and 16B cause the rotating rollers 16A and 16B and the raw material 37 to rotate.
The friction caused by the relative movement with the rotating roller 16 increases.
The powder attached to A and 16B is drawn off. Further, the powder content that is not scraped off by the raw material 37 is
Is forcibly scraped off. Therefore, it is possible to prevent the powder from entering into the respective parts of the crushing device in the next step, thereby causing a failure and preventing the crushing efficiency from being reduced due to the buffering action of the powder.

As described above, the dispensing device with an adhering raw material sieving machine and the method for adhering raw material sieving according to the present invention are stable without degrading the sieving performance even when the raw material particle size and the water content change. Since it is possible to pay out the raw material and coarse sieving (scalping), it is applicable to the raw material that contains a lot of sand and clay, the topsoil (exfoliation), the waste of construction, etc. can do.

[0034]

INDUSTRIAL APPLICABILITY The dispensing device with a sieving machine for adhesive raw materials and the adhesive raw material sieving and dispensing method of the present invention use a multi-bed type roll screen for sieving and dispensing raw materials, and Different types of products can be obtained simultaneously in a small space. Since the rotating rollers of each stage of the multi-bed type roll screen vibrate at the same time as the rotation,
Relative motion between the rough stone contained in the raw material and the rotating roller increases, friction increases, and the rough stone is prevented from being caught, and the powder particles adhering to the rotating roller are scraped off by the rough stone, so the sieving performance deteriorates. Can be prevented.

Further, according to the present invention, since clogging of the roll screen is effectively prevented, even if the roll screen is a multi-bed type roll screen having a plurality of rows arranged in the upper and lower rows, the roll screen arranged in the upper stage side. The raw materials are reliably sieved by the above, and the raw material screened on the upper stage side is further sieved by a roll screen with different sieve meshes arranged on the lower stage side. Therefore, it is possible to obtain a product having a plurality of sizes of distribution from the same raw material very reliably at the same time.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a dispensing device with a sieving machine for adhesive raw materials according to the present invention.

FIG. 2 is a schematic arrow view seen from the direction A in FIG.

FIG. 3 is a partial plan view showing a sieve mesh of a rotating roller.

FIG. 4 is a schematic plan view showing a driving method of a rotating roller.

5 is a schematic arrow view seen from the direction B in FIG. 1. FIG.

FIG. 6 is a schematic side view for explaining the operation of the dispensing device with a sieve for adherent raw material according to the present invention.

[Explanation of symbols]

 1 Discharge device with sieving machine for adhesive raw material 11 Hopper 12 Pan deck 15 Multi-bed type roll screen 16A, 16B Rotating roller 20A, 20B Gap 21, 22 Eccentric plate 25, 29A, 29B Motor 30A, 30B Universal joint 36 Cleaner

Claims (2)

(57) [Claims] 1. A hopper that accumulates and appropriately discharges an adhesive raw material supplied from the outside, a pan deck that vibrates to convey the raw material discharged from the hopper, and a sieve that conveys the raw material conveyed by the pan deck. In order to separate the rolls, a plurality of rows of roll screens in which rows of a plurality of rotary rollers are arranged one above the other are arranged in different meshes, and an oscillating means for vibrating the rotary rollers. Dispenser with sieve. 2. An adhesive raw material supplied from the outside is supplied by a supply means to the vibrating pan deck, and the raw material discharged from the hopper is conveyed by the vibrating pan deck, and then vibrated. The raw material supplied from the pan deck is sieved by a plurality of rows of roll screens having different sieve meshes in which the rows of the rotating rollers are arranged one above the other, and the raw material sieve dispensing method is characterized in that.