JPH038372Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a magnetic material removal device for removing magnetic material mixed in a utility object.

[Background technology and its problems]

For example, iron scraps mixed in a coal block not only reduce crushing efficiency when producing pulverized coal from the coal block, but also impede smooth operation of a burner. Also,
It can also cause damage to the mill. As described above, magnetic substances such as iron scraps and nails mixed in useful objects such as coal blocks, feed, and pebbles are foreign substances or impurities and must be removed as they cause many disadvantages.

Conventionally, known means for removing magnetic substances mixed in such utility objects include inserting a magnetic substance into the utility object or arranging magnetic substances to face the utility object during transport. It is being

However, the former method results in oversized equipment, resulting in poor working efficiency and uneconomical performance. The latter must employ a magnetic body such as a strong electromagnet. Furthermore, since there is little chance that the magnetic material, which is a mixture of both, will encounter the magnetic material, there is a problem that only a portion of the magnetic material in the utility object is excluded, making it impractical.

[Purpose of invention]

The present invention was devised in order to eliminate the above-mentioned conventional problems, and its purpose is to provide a magnetic material removal device with high removal efficiency.

[Means and actions for solving problems]

The present invention solves the conventional problems by agitating the utility object while transporting it and increasing the chances of it approaching the magnetic means.

For this reason, there is a need for a transfer means that continuously or intermittently transfers the utility object, and a magnetic force for attracting and removing the magnetic material in the utility object disposed opposite to the utility object being transferred by the transfer means. and a stirring means that engages with the utility object being transferred by the transfer means and stirs the utility object, the magnetic material in the utility object being transferred moves toward the magnetic force means. The above purpose is achieved by configuring the system to provide the following information.

Here, stirring is applied to the utility object that is being transferred continuously or intermittently by the transfer means, and the magnetic material in the utility object is given a motion so as to approach the magnetic force means, so that the mixed magnetic material is removed during the transfer. Opportunities for face-to-face approach to the magnetic force means are provided uniformly regardless of the location in the utility object. Therefore, since the magnetic force means can reliably attract and attract the approaching magnetic body, the removal efficiency can be dramatically improved.

〔Example〕

Embodiments of the magnetic material removal device according to the present invention will be described with reference to the drawings.

(First embodiment) The magnetic material removal device of this embodiment is shown in Fig. 1 and Fig. 2.
As shown in the figure, it is composed of a transfer means 10, a magnetic force means 20, and a stirring means 30.

The transfer means 10 is of a conveyor type and is formed of a support roller 16, a guide roller 17, a drive roller 18, and an endless belt 11 rotatably supported by these rollers 16, 17, and 18.
Both edges of the belt 11 in the width direction are slightly higher than the center portion (not shown). Therefore, the coal block 1, which is a utility object, supplied from the supply hopper 7 at the starting end side 2 becomes a layer with a constant thickness on the placing surface 12 of the belt 11, and is transferred to the terminal end side 3 in the right direction in FIG. It is accommodated in the receiving hopper 8. Note that the discharging means of the supply hopper 7, other intermediately disposed guide rollers, drive control means, etc. are omitted.

Further, the magnetic force means 20 is configured to
It is formed from an electromagnet and removes the magnetic material 5 such as iron scrap mixed in by magnetic force while adsorbing it, and the effective attracting surface 21 is approximately equal to the length L of the transfer means 10 in the moving direction and the width of the belt 11. It is determined as the product of width W. In addition, the magnetic means 20 has its effective attracting surface 21 supported by an elevating mechanism (not shown) so as to be able to approach and separate from the mounting surface 12, and the magnetic body 5 attracted thereto.
For the convenience of eliminating the transfer means, the transfer means is configured to be able to reciprocate in a direction perpendicular to the transfer direction. Here, the magnetic force means 20 is a stirring means 3 to be described later.
0 and the magnetic force means 2
0 is longer than the stirring means 30 on the upstream and downstream sides of the transporting direction of the transporting means 10. As a result, the left side (that is, the upstream side) of the stirring means 30 in FIG.
A surface layer collection area Au for adsorbing and collecting the magnetic material 5 mixed in the surface layer of the coal lump 1 being transferred is formed, and also on the right side (downstream side), a stirring means 30 is formed. A bottom layer collection area AL is formed to adsorb and collect the magnetic material 5 mixed in the bottom layer of the stirred and reversed coal block 1 (which was the bottom layer on the upstream side). . Therefore, at the location where the stirring means 30 is disposed, the magnetic force means 20 is located at the most during stirring.
An intermediate layer collection area Am is formed for adsorbing and collecting the magnetic material 5 mixed in the intermediate layer of the coal block 1, that is, the portion approached by the coal block 1. This intermediate layer collection area is equal to the stirring area.

Now, the stirring means 3 arranged in the above relationship
0 stirs so as to reverse the surface layer and bottom layer of the coal lump 1 transferred by the transfer means 10, and in this embodiment, the coal block 1 is stirred in a direction perpendicular to the transfer direction of the transfer means 10. A drive shaft 31 and a pair of rotating screws 3 wound around the drive shaft 31.
2 and 33, and a drive motor 35 for rotationally driving the drive shaft 31. and,
As seen in FIG.
The left rotating screws 33 and 33 are wound in opposite directions to each other, and are formed so as to be able to move the transported coal block 1 from each edge in the width direction of the belt 11 to the center while rotating and agitating it. Therefore, the rotating screw 3
Between 2 and 33, that is, in the center of the belt 11, the coal lump 1 is raised, and the surface layer, middle layer, and bottom layer of the coal lump 1 approach the effective adsorption surface 21 of the magnetic force means 20 in this order,
Thereafter, it is returned to the mounting surface 12 of the belt 11. The blade shape, number of turns, etc. of each rotating screw 32, 33 are determined so that the surface layer on the upstream side becomes the bottom layer on the downstream side.

Next, the operation of the first embodiment will be explained.

First, the set discharge amount within a unit time of the discharge means (not shown) of the supply hopper 7 and the transfer speed of the belt 11 of the transfer means 10 are set, and based on these settings, the coal lump 1, which is a utility object, is formed. Placement surface 1 of effective adsorption surface 21 of magnetic force means 20 in light of layer thickness
The height relative to 2 is adjusted by a lifting mechanism (not shown).

Next, the electromagnet of the magnetic force means 20 is activated, the drive motor 35 of the stirring means 30 is started, and the transfer means 1
Drive 0. Then, the belt 1 at the starting end side 2
The coal lumps 1 supplied to the coal block 1 form a layer of constant thickness and are sequentially transferred toward the terminal end side 3. Therefore, coal lump 1
The magnetic substance 5 mixed in the surface layer is adsorbed and collected by the magnetic force means 20 in the surface layer collection area Au and is removed from the coal mass 1. In this case, the magnetic material 5 mixed in the middle layer and the bottom layer is not attracted and collected.

When reaching the stirring area, the coal lump 1 is moved from each edge in the width direction of the belt 11 toward the center while being rotationally stirred by a pair of rotating screws 32 and 33. Since the coal block 1 is raised in the center, the magnetic material 5 mixed in the middle layer and the bottom layer has the opportunity to sequentially approach the effective attraction surface 21 of the magnetic force means 20, and as a result, it is attracted to the magnetic force means 20. be captured. In this case, most of the magnetic material 5 in the bottom layer is exposed at the top portion when passing through the stirring means 30 due to its stirring characteristics. Therefore, the magnetic material 5 mixed in the bottom layer on the upstream side is removed by the stirring means 3.
The particles are attracted and collected by the magnetic force means 20 in the bottom collection area AL, which is downstream of 0.

Therefore, according to this embodiment, since magnetic materials 5 such as iron scraps mixed in while transporting the coal lump 1, which is a useful object, are removed, the means of transporting the coal lump 1 is changed. Since it can be used as is, equipment can be simplified and it is economical.

In addition, since the stirring means 30 is provided and the coal lump 1 is stirred, not only the surface layer during transportation but also the magnetic material 5 mixed in the middle layer and the bottom layer are uniformly approached by the magnetic force means 20. In addition, the electromagnetic capacity of the magnetic means 20 can be reduced, and the operating economy can be improved. This has the effect of dramatically improving the removal efficiency compared to conventional removal means.

Further, since the stirring means 30 is formed of a pair of rotating screws 32 and 33 that move the coal mass 1 to the center, the coal lump 1 does not fall off the belt 11 of the transfer means 10, and the magnetic material 5
can be raised sufficiently, so that the removal efficiency can be further improved from this point as well.

Further, the magnetic force means 20 is attached to the mounting surface 1 of the belt 11
2 so that they can be separated from and approached, the removal efficiency can be increased in this respect as well, and the processing capacity can be expanded because it can be adapted to the layer thickness of the coal mass 1 without reducing the removal efficiency. .

(Second Embodiment) A second embodiment is shown in FIGS. 3 and 4, in which the stirring means 30 is provided in a separate form compared to the first embodiment.

In FIG. 3, the stirring means 30 is formed by a pair of guide plates 41, 41 forming an outlet opening 42 whose upstream side is open and facing downstream, and a scraper 43 whose tip portion faces the outlet opening 42. The scraper 43 has inclined surfaces 44, 44 that gradually rise toward the downstream side with respect to the bottom surface 46, and has inclined surfaces 44, 44 that are inclined to separate water in the left and right direction, and an upright surface 45 at the rear end portion, and has an outlet opening. The coal lump 1 sent out from the section 42 is raised as it goes downstream and is formed so that it can fall left and right. Note that the guide plates 41, 41 and the scraper 43 are supported by support means (not shown) so as to have a small gap from the mounting surface 12 of the belt 11.

Here, the magnetic substance 5 mixed in the surface layer of the coal lump 1 transferred by the belt 11 is transferred to the surface layer collection area Au and the stirring area Am which is raised as it approaches the outlet opening 42 shown in FIG. is attracted and collected by the magnetic force means 20 in the first half of the outlet opening part 4.
2, the magnetic material 5 in the intermediate layer is collected in the stirring region Am. Further, after passing through the scraper 43, the magnetic material 5 mixed in the bottom layer is collected on the upstream side.

Therefore, in the case of this second embodiment as well, since the coal mass 1 can be raised and reversed and agitated, it has the effect of increasing the removal efficiency as in the case of the first embodiment, and it also requires no power and has a simple structure. I can do it.

(Third Embodiment) A third embodiment is shown in FIG. 5, in which a rotating shaft 51 is disposed in a direction perpendicular to the conveying direction of the belt 11 of the conveying means 10, and a plurality of blade members 52 extend in the radial direction. Stirring means 3 having a water wheel type structure in which are arranged at equal intervals.
This is the case where it is set to 0. Other structures are the same as in the first embodiment. In addition, the claw part 5
3 may be omitted and the blade member 52 itself may have a hemispherical shape.

Therefore, since the vane member 52 pumps up and stirs the coal mass 1 transferred by the belt 11, it has the effect of increasing the removal efficiency as in the case of the previous embodiment. Further, this stirring means 30 has the effect of uniformly stirring the belt 11 in the width direction.

In each of the above embodiments, the transfer means 10 is formed by a conveyor consisting of an endless belt 11, but the point is that any means that can transfer the coal lumps 1 in layers may be used, so any type of means may be used. be able to.

Further, the stirring means 30 is not limited to the structure disclosed above, and may have a scoop-type batch type structure, etc., as long as it can stir so that the layered form of the coal lump 1 transferred by the transfer means 10 changes. It is also desirable to arrange a plurality of units in series on the transfer means. Of course, the relative positional relationship with the conveying means 10 can be selected arbitrarily, so that, for example, the drive shaft 31 and the rotating shaft 51 in the first and third embodiments may not be perpendicular to the conveying direction of the belt 11, but may be crossed as long as the width direction thereof can be covered. It can also be installed.

Further, although the magnetic force means 20 is an electromagnet, it can also be implemented as a permanent magnet. however,
If an electromagnet is used, the magnetic force can be adjusted and the magnetic material 5 that has been attracted and collected can be easily removed.

Furthermore, the utility object is not limited to the coal lump 1, but can be widely applied as long as it is not in a form that cannot be stirred, such as a one-piece object. For example, feed, pebbles, etc. may be used. In particular, with the present invention, it is possible to effectively eliminate iron ingots with a high specific gravity that have fallen to the bottom layer of feed, etc. with a low specific gravity, which was considered to be the most difficult object in conventional structures.

(Effects of the Invention) The present invention has an excellent effect of dramatically increasing removal efficiency since the useful object is stirred while being transferred.

[Brief explanation of drawings]

Fig. 1 is an overall side view showing a first embodiment of the magnetic material removal device according to the present invention, Fig. 2 is a partially sectional front view based on the arrow line - in Fig. 1, and Fig. 3 is a different stirring FIG. 4 is a perspective view of the appearance of the scraper of the second embodiment, and FIG. 5 is a plan view of the main part of the third embodiment, which is a different stirring means. FIG. 1...Charcoal lump that is a useful object, 5...Magnetic material, 1
0... Transfer means, 12... Placement surface, 20... Magnetic force means, 30... Stirring means, 32, 33... Rotating screw, 41... Guide plate, 42... Outlet opening part, 43... Scraper , 44... Inclined surface, 51... Rotating shaft of water turbine structure.

Claims (1)

[Claims for Utility Model Registration] (1) A means for transporting a utility object continuously or intermittently; magnetic force means for attracting and displacing the body; and stirring means for stirring the utility object transferred by the transfer means and bringing the magnetic material in the utility object closer to the magnetic force means, and the magnetic force A magnetic material removal device characterized in that the means is disposed above the stirring means, and the length of the magnetic means is longer than the stirring means in the upstream and downstream sides of the transporting direction of the transporting means. (2) In claim 1 of the utility model registration claim, the stirring means moves the utility object in a direction that intersects the transfer direction of the transfer means and toward the center of the mounting surface of the transfer means. What is claimed is: 1. A magnetic material removal device comprising: a rotating screw formed to be able to move; (3) In claim 1 of the utility model registration claim, a pair of guide plates are formed so that the stirring means can collect the utility objects being transferred toward the center of the placement surface of the transfer means. and a scraper disposed at the outlet opening of the guide plate and having an inclined surface that slopes upward on the downstream side. (4) Claim 1 of the utility model registration claim is characterized in that the agitating means has a water wheel type structure in which the rotating shaft is disposed in a direction perpendicular to the transfer direction of the transfer means. Magnetic material removal device. (5) The magnetic material removal device according to any of claims 1 to 4 of the utility model registration claim, wherein the useful object is a lump of coal.