JP2003080105A - Feeder of material to be crushed - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a feeder of materials to be crushed which feeds the materials to be crushed to a crusher after removing iron slugs and iron pieces contaminated therein during feeding of the materials to be crushed. SOLUTION: The feeder 31 of the materials to be crushed for feeding the materials to be crushed to the crusher crushing the materials comprises a vibrating box 7 having an opening part 11 in one end part for discharging the materials to be crushed and moving them to the direction of the opening part 11 by vibration, an inclined plate 12 installed at the opening part 11 of the vibrating box 7 so as to form a gentle slope obliquely downward from the horizontal, and a magnet 30 attached to the inclined plate 12 for absorbing the iron pieces contaminated in the materials to be crushed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pulverized material supply device.

[0002]

2. Description of the Related Art Pruned branches and leaves, trees, or thinned wood,
As an effective use method of waste wood such as construction waste wood, branches and leaves, trees, thinned wood, waste wood is crushed into fine chips, which are laid on parks and walking roads to prevent summer drying, and chips are used for trees. There is a method of using it around the trees as compost to help grow trees. It may also be used for the straw of livestock. In recent years, there is an increasing demand for a crusher for finely crushing branches and leaves, trees, thinned wood, and waste wood.
FIG. 2 shows a hammer crusher 1 described as an example of a crusher.
FIG. The hammer crusher 1 includes a vibration constant quantity feeder 2, a feeding belt conveyor 3, a hopper 4, a crushing device 5,
It has a discharge conveyor 6. The objects to be crushed such as branches and leaves, which are supplied to the vibration constant quantity feeder 2 by a wheel loader, a hydraulic excavator or the like, are supplied by the vibration constant quantity feeder 2 to one end of the feeding belt conveyor 3 at a constant amount per hour. The material to be crushed is conveyed obliquely upward on the feeding belt conveyor 3 and falls into a hopper 4 arranged so as to be connected to the other end of the feeding belt conveyor 3 and is arranged below the hopper 4. It is crushed by the crushing device 5 and discharged by the discharge conveyor 6. FIG. 3 shows a cross-sectional view taken along the line AA of FIG. 2 to describe the configuration of the vibration constant quantity feeder 2. The vibrating box 7 to which the material to be crushed is supplied is attached to a mount 9 via a spring 8, and an opening 11 is provided at one end of the vibrating box 7. A vibration generator 10 is provided on the outer surface of the bottom of the vibrating box 7 to vibrate the vibrating box 7 in the direction of the arrow in the figure to move the object to be crushed toward the opening 11. Below the opening 11, a feeding belt conveyor 3 is installed, and a guide 13 is provided so that the pulverized material does not scatter other than the feeding belt conveyor 3.

FIG. 4 shows a Y view of FIG. The crushing device 5 and the electric motor 14 are mounted on a frame 15, and a pulley 16 provided on an output shaft of the electric motor 14 and a pulley 18 provided on a main shaft 17 of the crushing device 5 are connected by a belt 19. . FIG. 5 shows a sectional BB view of FIG. The crushing device 5 has a case 20, a body blade 21, a crushing blade 22, a connecting member 23, a main shaft 17, and a screen 24. Spindle 1
A crushing blade 22 having a rectangular shape is rotatably attached to an end portion of a connecting member 23 that rotates integrally with 7, and a plurality of body blades 21 having a rectangular cross section are provided on an inner peripheral surface of a case 20 having a cylindrical cross section.
Are arranged along the longitudinal direction of the case 20. The crushing blade 22 is attached so that a predetermined gap is formed between the tip of the crushing blade 22 and the rectangular corner of the body blade 21. At the lower part of the case 20, a screen 24 having a screen diameter in which the size of the grid is a predetermined size is attached. The hopper 4 is connected to the upper portion of the crushing device 5. The crushed object conveyed by the charging belt conveyor 3 falls in the hopper 4, is sandwiched in the gap between the body blade 21 and the rotating crushing blade 22, and is crushed (referred to as pinching). Of the crushed crushed materials, those having a size smaller than the screen diameter pass through the screen 24, fall on the discharge conveyor 6, and are discharged. The crushed material larger than the screen diameter is repeatedly pinched until it becomes smaller than the screen diameter.

[0004]

However, the prior art of the hammer crusher 1 has the following problems. The iron ingots and iron pieces mixed in the crushed material are often separated and eliminated by a magnetic separator that adsorbs only the magnetic material while being conveyed on the feeding belt conveyor 3, but all iron ingots and iron pieces are eliminated. It is difficult to do so, and it may be mixed in the crushing device 5. The iron ingots and iron pieces mixed in the crushing device 5 are continuously beaten in the crushing device 5 until the screen diameter becomes equal to or smaller than the screen diameter.
At this time, the inside of the crushing device 5, the crushing blade 22, and the body blade 21 may be damaged, which causes a problem that the life of the crushing device 5 is short and the maintenance cost is expensive. Further, if the iron ingot and the iron piece continue to be beaten, there is a problem that they become red hot and easily become a fire seed, and the pulverized material easily ignites.

The present invention has been made in view of the above problems, and removes iron ingots and iron pieces mixed in the object to be ground when the object to be ground is supplied to the crushing device and supplies the material to be ground. An object is to provide a material supply device.

[0006]

Means for Solving the Problems, Actions and Effects To achieve the above object, a first aspect of the present invention is to provide a crushing object supply device for supplying a crushing object to a crushing device for crushing an crushing object. The vibration box has an opening through which the object to be crushed is carried out, and the vibration box moves the object to be crushed toward the opening by vibration, and the opening of the vibration box is provided with a gentle slope from horizontal to diagonally downward. It is configured to include an inclined plate and a magnet that is attached to the inclined plate and that adsorbs iron pieces mixed in the object to be crushed.

According to the first aspect of the present invention, since the inclined plate which is horizontal and inclined and has the magnet attached thereto is vibrating, the crushed material passes over the magnet while spreading and leveling the thickness. Since the crushed object has a uniform thickness through which the magnetic force of the magnet is sufficiently spread, the crushed object including the iron ingot and the iron piece is adsorbed by the magnet. As a result, the amount of iron ingots and iron pieces that enter the crusher is reduced, and the chance of damage to the inside of the crusher is reduced. Further, since iron ingots and iron pieces that are easily ignited are reduced, it is also effective in preventing ignition of the object to be crushed.

A second invention is based on the first invention, wherein the magnet is
A plurality of them are arranged on the inclined plate with a predetermined distance from each other.

According to the second aspect of the invention, since the plurality of magnets are arranged at a predetermined distance, the number of edge portions where the lines of magnetic force are concentrated increases, and the lines of magnetic force are more evenly distributed than those of one large magnet. To be done. As a result, it is possible to efficiently adsorb the crushed object including the iron ingot and the iron piece.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION With reference to FIG. 1, the structure of a pulverized material supply device 31 of the present embodiment will be described. It should be noted that, of the constituent elements in FIG. 1, the same constituent elements as those described in FIGS. 2 to 5 are designated by the same reference numerals, and description thereof will be omitted. Material to be ground supply device 3
As shown in FIG. 1 (a), the opening 11 of the vibration box 7 of the vibration constant quantity feeder 2 described in FIG. 3 has a gentle slope with an angle θ from the horizontal of 45 degrees or less, for example, 30 degrees. The inclined plate 12 is attached so as to form Then, as shown in FIG. 1B, four magnets 30 are attached to the tip of the inclined plate 12 with a predetermined distance from each other.

The operation and effect of this embodiment will be described. The object to be crushed put in the vibrating box 7 gradually moves toward the opening 11 while being diffused to the bottom surface of the vibrating box 7 by the vibration of the vibration generator 10 and leveling the thickness. Since the inclined plate 12 attached to the opening 11 has a gentle slope and vibrates integrally with the vibrating box 7, the object to be crushed moves on the inclined plate 12 at the tip of the inclined plate 12. Even when passing at a low speed towards,
The object to be crushed has such a thickness that the magnetic force of the magnet 30 is sufficiently distributed. Then, the crushed object including the iron ingot and the iron piece is attracted to the magnet 30. As a result, the amount of iron ingots and iron pieces that enter the crushing device 5 decreases, and the chances of damaging the inside of the crushing device 5, the crushing blade 22, and the body blade 21 decrease. Further, since iron ingots and iron pieces that are easily ignited are reduced, it is also effective in preventing ignition of the object to be crushed. In a general magnet, magnetic force lines are concentrated on the edge portion. Therefore, when a plurality of small magnets 30 are arranged at a predetermined distance as in the present embodiment, a plurality of edge portions are formed to form one large magnet. The magnetic field lines are evenly distributed, and the crushed object including iron ingots and iron pieces can be more efficiently absorbed.

In the present embodiment, the vibrating box 7 of the pulverized material supply device 31 supplies the pulverized material in a fixed amount, but the present invention is not limited to this. The same effect can be obtained with the vibration box 7 that does not supply. Further, the present embodiment can be applied to a vibrating box having a sieve. Further, in the present embodiment, an example in which four magnets 30 are attached to the inclined plate 12 has been described. Although a plurality of magnets 30 to be attached are desirable,
Even one can be applied.

As described above, according to the present invention, in the crushed material supply device for supplying the crushed material to the crushing device for crushing the crushed material, the one end has the opening through which the crushed material is carried out, A vibrating box that moves the object to be crushed toward the opening, an inclined plate that is provided in the opening of the vibration box with a gentle slope from the horizontal to the lower side, and an iron piece that is attached to the inclined plate and mixed into the object to be crushed. And a magnet that attracts the magnet.
As a result, the inclined plate, which is horizontal and inclined and has a magnet attached thereto, vibrates, so that the material to be crushed passes over the magnet while spreading and leveling the thickness. Since the crushed object has a uniform thickness through which the magnetic force of the magnet is sufficiently spread, the crushed object including the iron ingot and the iron piece is adsorbed by the magnet. As a result, the amount of iron ingots and iron pieces that enter the crusher is reduced, and the chance of damage to the inside of the crusher is reduced. Further, since iron ingots and iron pieces that are easily ignited are reduced, it is also effective in preventing ignition of the object to be crushed.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a pulverized material supply device.

FIG. 2 is an explanatory diagram of a hammer crusher.

3 is a sectional AA view of FIG. 2. FIG.

FIG. 4 is a Y view of FIG. 2.

5 is a cross-sectional BB view of FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Hammer crusher, 2 ... Vibration constant quantity feeder, 3 ... Input belt conveyor, 4 ... Hopper, 5 ... Crushing device, 6 ... Discharge conveyor, 7 ... Vibration box, 8 ... Spring, 9 ... Stand, 10 ... Vibration generator , 11 ... Aperture, 12 ... Inclined plate, 13 ... Guide, 14 ... Electric motor, 15 ... Stand, 16 ... Pulley, 1
7 ... Spindle, 18 ... Pulley, 19 ... Belt, 20 ... Case, 21 ... Body blade, 22 ... Grinding blade, 23 ... Communication member, 2
4 ... Screen, 30 ... Magnet, 31 ... Grinding object supply device.

Claims (2)

[Claims] 1. A crushed object supply device for supplying a crushed object to a crushing device for crushing an object to be crushed, which has an opening at one end for discharging the object to be crushed A vibrating box that moves in the direction, an inclined plate that is provided in the opening of the vibrating box with a gentle slope from horizontal to diagonally downward, and a magnet that is attached to the inclined plate and that attracts iron pieces mixed in the crushed object. An apparatus for supplying a material to be crushed, which is provided. 2. The pulverized material supply device according to claim 1, wherein a plurality of magnets are provided on the inclined plate with a predetermined distance from each other.