JP2003154286A - Electrical crushing apparatus and method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an electrical crushing apparatus and a method by which throughput in electrical crushing is improved. SOLUTION: The electrical crushing apparatus 1 is provided with a conveyer 5 for transporting a material 27 to be crushed by a transporting belt 3 having a plurality of through holes on the transporting surface, a treating vessel 11 in which an insulating liquid 9 is stored and at least the crushing treatment range 7 of the conveyer 5 is dipped into the liquid 9, a fixed electrode 13 provided below the crushing treatment range 7 of the conveyer 5 in the treating vessel 11, a rod like counter electrode 15 provided to face the fixed electrode 13 across the crushing treatment range 7 of the conveyer 5 and a high voltage generating means 16 for imparting high voltage between the fixed electrode 13 and the counter electrode 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric crushing apparatus and an electric crushing method for electrically crushing an object to be crushed by an electric discharge generated between electrodes, and more specifically, to a crushing treatment area of a conveyor for conveying the object to be crushed. The present invention relates to a technique that enables continuous processing of a crushed object by sandwiching the crushed material with upper and lower electrodes.

[0002]

2. Description of the Related Art Conventionally, an electric crushing method for crushing an object to be crushed by lightning discharge has been known. This method is carried out by arranging the material to be crushed between the electrodes facing each other and applying a high voltage to cause the discharge generated between the opposing electrodes to act on the material to be crushed. For example, when the material to be crushed is rock, the tensile strength is significantly smaller than the compressive strength. From this, by passing a lightning discharge through the crushed material,
It is possible to destroy explosive thermal expansion by causing air and moisture in the micro voids inside the explosive object to cause explosive thermal expansion, and applying a tensile load due to this explosive thermal expansion to the explosive object to destroy it. . In addition, in the crushing by lightning discharge, even if the lightning discharge does not pass through the crushed object, the surrounding medium may be changed by the lightning discharge, and the crushed object may be crushed by the shock wave at that time.

An example of such an electric crushing device utilizing lightning discharge is disclosed in Japanese Patent Application Laid-Open No. 60-118252. In this electric crushing device, the bucket for containing the crushed object can be moved up and down from the end of the carry-in conveyor to the vicinity of the fixed electrode in the processing tank by the elevating device. A movable electrode is movably supported above the fixed electrode by a moving device. The movable electrode retreats so that it does not interfere with the descending operation of the bucket when the bucket descends above the fixed electrode, and after the bucket is lifted after the crushed material is put into the processing tank, the fixed electrode The movable electrode is moved to a position opposed to.

In this electric crushing device, when the object to be crushed conveyed from the conveyor is accommodated in the bucket in a predetermined amount, the bucket is lowered and the object to be crushed is put into the processing tank. When the bucket is lifted and taken out of the processing tank after the crushed object is charged, the movable electrode advances to a predetermined position and faces the fixed electrode with the crushed object interposed therebetween. By applying a voltage between the fixed electrode and the movable electrode in this state, a lightning discharge is generated between the electrodes, and this lightning discharge is applied to the crushed object, so that the crushed object can be crushed. It was

[0005]

However, the above-described conventional electric crushing apparatus performs batch crushing because it carries out batch-type processing in which a fixed amount of a crushed object is stored in a bucket and put into a processing tank. However, it was difficult to improve the crushing capacity. Also, if a large amount of crushed material is put into the processing tank in order to increase the processing capacity, the height of the crushed material accumulated increases, the distance between the fixed electrode and the movable electrode increases, and a constant electric field is generated. A large amount of applied voltage is required to maintain strength (in order to cause a lightning discharge phenomenon), which causes a problem in capital investment and safety. Furthermore, since the material to be crushed is put into the liquid in the processing tank, the material to be crushed has a smaller specific gravity than the liquid such as resin or wood, or the waste material or porous body of electrical appliances having a closed casing, etc. In the case of a substance containing air inside, the material to be crushed floats in the processing tank, and there is a problem that electric crushing becomes impossible. The present invention has been made in view of the above circumstances, and a first object thereof is to obtain an electric crushing device and an electric crushing method capable of increasing the processing capacity by electric crushing. A second object is to obtain an electric crushing device and an electric crushing method with high electric crushing efficiency. A third object is to obtain an electric crushing device capable of crushing even an object to be crushed, which is lighter than the liquid stored in the processing tank.

[0006]

In order to achieve the above object, an electric crushing apparatus according to claim 1 of the present invention is a conveyor for conveying an object to be crushed by a conveyor belt having a plurality of through holes on a conveying surface. A treatment tank for storing an insulating liquid and immersing at least a crushing treatment area of the conveyor in the liquid, a fixed electrode provided below the crushing treatment area of the conveyor in the treatment tank, and a crushing treatment of the conveyor A rod-shaped counter electrode provided so as to face the fixed electrode across the region,
A high voltage generating means for applying a high voltage is provided between the fixed electrode and the counter electrode.

[0007] In this electric crushing device, the material to be crushed is supplied onto a conveyor belt having a through hole, and when the material to be crushed reaches the processing tank by the conveyor belt, it is fixed above and below the crushing processing area of the conveyor. A high voltage is applied to the electrode and the counter electrode, and a discharge is generated between the fixed electrode and the counter electrode, which passes through the through hole of the conveyor belt. That is, the material to be crushed passes through this discharge, and is electrically crushed by dielectric breakdown at that time. Therefore, it is possible to perform the electric crushing process on the crushed object in the state of being transferred by the conveyor, and it becomes possible to perform the continuous processing which could not be performed by the batch process of crushing the crushed object by a fixed amount. The ability is greatly improved.

An electric crushing apparatus according to a second aspect of the invention is characterized in that a plurality of the counter electrodes are provided so as to correspond to the through holes in the crushing processing region of the conveyor.

In this electric crushing device, all the counter electrodes coincide with the through holes at the same time, and a voltage is applied in a state where the counter electrodes coincide with the through holes, so that the conveyor belt does not intervene in a pseudo manner. Discharge becomes possible. Also,
By providing a plurality of counter electrodes, discharges can be generated at a plurality of locations at the same time, the probability that lightning discharge passes through the inside of the crushed object increases, and processing with high electric crushing efficiency becomes possible.

An electric crusher according to a third aspect of the invention is characterized in that the counter electrode is supported so as to be movable toward and away from the conveyor belt.

In this electric crusher, the discharge conditions can be set optimally for the thickness and strength of the crushed object by freely combining the distance between the opposing electrodes and the applied voltage. Further, creeping discharge that occurs when the height of the discharge is relatively large can be suppressed, and efficient electric crushing can be realized.

An electric crushing apparatus according to a fourth aspect is characterized in that the fixed electrode is formed by a plurality of rod-shaped electrodes corresponding to the respective counter electrodes.

In this electric crushing device, both the fixed electrode and the counter electrode can be rod-shaped, and by doing so, lightning discharge is generated between the tips of the rod-shaped electrodes which are vertically opposed to each other on the same straight line. It becomes easier to determine the direction in which the lightning discharge occurs through the crushed object (the direction in which the detour direction with respect to the crushed object is excluded).

According to a fifth aspect of the present invention, in the electric crushing apparatus, an upper conveyor having a pressing and conveying belt that holds the crushed object at least with the conveying belt in the crushing processing area is provided above the conveyor. Characterize.

In this electric crushing device, the conveyor belt in the crushing processing area of the conveyor located in the liquid in the processing tank is
The upper conveyor is pressed from above, and the material to be crushed on the conveyor belt moves in the conveying direction in the processing tank while being sandwiched between the conveyor belt and the upper conveyor.
As a result, even an object to be crushed, which has a lower specific gravity than the liquid in the processing tank, can be electrically crushed in the conveyed state without floating on the liquid surface. In addition, by sandwiching the crushed material between the conveyor belt and the upper conveyor, the crushed material that has been supplied in pieces can be compressed to a high density, increasing the probability that lightning discharge will pass through the crushed material. Therefore, efficient electric crushing becomes possible.

According to a sixth aspect of the electric crushing method of the present invention, at least the crushing treatment area of a conveyor equipped with a conveyor belt having a plurality of through holes on its conveying surface is immersed in the liquid in the treatment layer to sandwich the crushing treatment area. A high voltage is applied between a fixed electrode provided on the lower side and a bar-shaped counter electrode provided on the upper side, which is an electric crushing method for crushing the object to be crushed on the conveyor belt in the crushing treatment area, It is characterized in that the conveying operation of the conveying belt is stopped at a position where the through hole coincides with the counter electrode and the high voltage is applied. Further, this operation may be repeated for each different through hole.

In this electric crushing method, the conveying operation of the conveyor belt is stopped at the position where the through hole coincides with the counter electrode, and a high voltage is applied between the fixed electrode and the counter electrode to crush the object to be crushed. By applying the voltage to the crushed material a plurality of times, the discharge can be repeatedly applied to the same location of the crushed material. Thereby, even if the crushed object is not destroyed by one discharge, it is possible to increase the chances of crushing the crushed object by subjecting the crushed object to a plurality of discharges.

According to a seventh aspect of the electric crushing method of the present invention, at least the crushing treatment area of a conveyor equipped with a conveyor belt having a plurality of through holes on its conveying surface is immersed in the liquid in the treatment layer to sandwich the crushing treatment area. A high voltage is applied between a fixed electrode provided on the lower side and a bar-shaped counter electrode provided on the upper side, which is an electric crushing method for crushing the object to be crushed on the conveyor belt in the crushing treatment area, The high voltage is applied at each timing when the through holes are aligned with the counter electrode while the transport belt is being transported. In this case, it is preferable to dispose a plurality of counter electrodes not only in the width direction of the conveyor belt but also in the conveyor direction of the conveyor belt.

In this electric crushing method, a high voltage is applied between the fixed electrode and the counter electrode at each timing when the through holes are aligned with the counter electrode while the transfer belt is being conveyed, and the transfer belt is continuously operated. It enables electric crushing. Therefore, when a plurality of counter electrodes are arranged in the transport direction of the transport belt, it is possible to repeatedly apply a plurality of discharges to substantially the same location on the crushed object each time the crushed object passes through the counter electrode. As a result, reliable and quick electric crushing of the crushed object becomes possible.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of an electric crushing apparatus and an electric crushing method according to the present invention will be described in detail below with reference to the drawings. 1 is a configuration diagram of a main part of an electric crushing device according to a first embodiment of the present invention, FIG. 2 is a perspective view showing a positional relationship between a through hole of a conveyor belt and a counter electrode, and FIG. 3 is a counter electrode. FIG. 7A is an operation explanatory view showing the retracted state in FIG.

As shown in FIG. 1, an electric crushing device 1 according to this embodiment includes a conveyor 5 having a conveyor belt 3,
A processing tank 11 in which at least the crushing processing area 7 of the conveyor 5 is immersed in the liquid 9, a fixed electrode 13 which is a ground electrode provided below the crushing processing area 7 in the processing tank 11, and a crushing processing area of the conveyor 5. Counter electrode 15, which is provided so as to face fixed electrode 13 with sandwiching 7, and fixed electrode 13 and counter electrode 15
A high-voltage pulse generator (high-voltage generator) 16 for applying a high-voltage pulse between the high-voltage pulse generator 16 and the high-voltage pulse generator 16;
Switch circuit 18 for switching lightning discharge by connecting / disconnecting between the counter electrode 15 and the counter electrode 15, and the switch circuit 18
And a control device 17 for controlling the generation timing of lightning discharge, etc. by on / off control.

The conveyor 5 forms, between the start end roller 19 and the end roller 21, a circumferential track for rotating the endless conveyor belt 3 in the direction of arrow a. Guide rollers 23 and 24 for supporting the conveyor belt 3 are appropriately arranged in a circumferential path between the start roller 19 and the end roller 21. However, the guide roller 24 is a roller having a short width that contacts only the widthwise end portion of the conveyor belt 3, and does not hinder the conveyance of the placed crushed object 27. The circumferential orbit has a shape such that the central portion thereof projects downward, and the circumferential orbit portion projecting downward serves as the crushing processing region 7 and the processing tank 11
It is located inside.

As shown in FIG. 2, the conveyor belt 3 has a plurality of through holes 25. In the present embodiment, the through holes 25 are provided by using the lattice-shaped transport belt 3, but in addition to this, the transport belt 3 is formed by forming circular holes or the like at predetermined vertical and horizontal intervals in a belt-shaped rubber belt or the like. It may be one.

The processing tank 11 stores the liquid 9, and the liquid 9 can be supplied / discharged by a supply tank, a supply pump, a discharge pipe, and the like (not shown). The liquid 9 can suitably use water, oil, or the like as an insulating medium. By immersing the crushed object 27 in the liquid 9,
The crushed object 27 is placed in the liquid 9 atmosphere having a higher dielectric breakdown strength than air. As a result, the crushed object 2
The occurrence of creeping discharge that bypasses 7 is suppressed, and the crushed object 27
It is possible to more reliably generate lightning discharge to the. Further, if the crushed object 27 is immersed in the liquid 9, the crushed object 2
The microscopic voids in 7 can be blocked, and the explosive expansion generated in the microscopic voids can be effectively applied as a tensile force or a shearing force to the crushed object 27.

A fixed electrode 13 is arranged below the crushing processing area 7 of the conveyor 5 in the processing tank 11. The fixed electrode 13 has a plate-like shape which is provided in an area substantially the same as the surface of the crushing processing area 7 and has an opening hole in a part thereof, or the crushed object 2
7 in the form of strips long in the transport direction are provided at equal intervals in the width direction of the transport belt 3, or conversely, strips of long strips in the width direction of the transport belt 3 of the crushed object 27. Various forms are conceivable, such as those provided at equal intervals in the carrying direction. In the present embodiment, as an example, as shown in FIG. 2, a strip-shaped fixed electrode 1 that is long in the transport direction of the crushed object 27.
3 are provided at equal intervals in the width direction of the conveyor belt 3.

On the other hand, above the crushing processing area 7, a plurality of counter electrodes 15 are arranged in a matrix along the direction in which the crushed object 27 is conveyed and the widthwise direction of the conveyor belt 3. The counter electrode 15 is formed by vertically arranging a bar-shaped body having a sharp tip so as to be aligned with the through hole 25 of the conveyor belt 3. The counter electrode 15 is supported so as to be vertically movable by an elevating device which will be described later. As shown in FIG. 1, the high-voltage pulse generator 16 may be provided separately for each of the plurality of counter electrodes 15 arranged in a matrix, but in addition to this, the crushed object 2
The counter electrodes 15 may be provided for each row of the counter electrodes 15 along the transport direction of 7, or may be provided for each row of the counter electrodes 15 along the width direction of the transport belt 3. Further, one high voltage pulse generator 16 may be provided for all the counter electrodes. Which configuration is used is appropriately set in consideration of the amount of energy to be generated, facility cost, and the like.

A high voltage pulse is applied between the counter electrode 15 and the fixed electrode 13 from a high voltage pulse generator 16 via a switch circuit 18. The controller 17 controls the switch circuit 18 and is also connected to a drive motor (not shown) for rotating the start end roller 19 or the end roller 21 of the conveyor 5 so that the transfer belt 3 can be intermittently transferred. Conveyor 5
Drive control. This conveyor belt 3 has a counter electrode 1
5 is stopped at a position where the through hole 25 coincides with 5, and this stop operation can be controlled by, for example, the rotation angle of the drive motor or a detection value from a separately provided through hole detection sensor or the like.

The controller 17 drives the conveyor belt 3 and stops the conveyor belt 3 when the counter electrode 15 coincides with the position of the through hole 25. Then, in this state, the high voltage pulse generated by the high voltage pulse generator 16 is intermittently applied to the electrode 1 by the on / off control of the switch circuit 18.
It is applied multiple times between 3 and 15.

Further, the counter electrode 15 can be vertically moved up and down by an elevating device 31 shown in FIG. That is, the counter electrode 15 is supported so as to be able to move toward and away from the conveyor belt 3. The control device 17 is connected to the elevating device 31, and the elevating device 31 lowers the counter electrode 15 at the same time when the positioning of the crushing processing area 7 is completed.
To control. Further, the control device 17 controls the elevating device 31 so as to raise the counter electrode 15 after the crushing of the crushed object 27 in the crushing processing area 7 is completed (after the high-voltage pulse is applied a predetermined number of times).

An auxiliary conveyor 33 is arranged in the processing tank 11 near the bottom surface below the conveyor belt 3. The auxiliary conveyor 33 has its end side raised to the outside of the processing tank 11, receives the crushed object 27a that has been crushed into smaller pieces than the through holes 25 on the conveyor belt 3 and dropped from the through holes 25, and this 11 operates so as to be discharged to the outside.

A recovery conveyor 35 is provided below the end portions of the conveyor 5 and the auxiliary conveyor 33, and the crushed object to be crushed 2 conveyed by each of the conveyors 5 and 33.
7 is conveyed to a separation device (not shown). In the separating device, the crushed object 27 is separated according to purpose by size, specific gravity, magnetic force, wind force, electrostatic force, or the like.

Next, the operation of the electric crushing method using the electric crusher 1 will be described. First, when the material to be crushed 27 is loaded into the loading hopper 37 by a transport vehicle (not shown), the loading hopper 37 supplies the crushed material 27 to the starting end side of the conveyor 5 in an appropriate amount. The conveyor 5 moves the conveyor belt 3 in the conveying direction a to convey the crushed material 27 supplied to the starting end into the processing tank 11.

The crushed material 27 on the conveyor belt 3 is the processing tank 1.
When the crushing processing area 7 in 1 is reached, the conveying operation of the conveyor 5 is stopped. Next, the elevating device 31 is operated to lower the counter electrode 15 so as to be close to the crushed object 27, as shown in FIG. In this state, a high voltage pulse is applied between the fixed electrode 13 and the counter electrode 15. The application of the high voltage pulse is intermittently performed a plurality of times at one stop position. The lightning discharge generated between the fixed electrode 13 and the counter electrode 15 by applying the high voltage pulse is
The crushed material 27 passes through the inside of the crushed material 27, and
The air and water in the minute void explosively expand, and the crushed object 27 is crushed by the tensile force and shearing force generated at that time.

After the application of the high voltage pulse a predetermined number of times is completed, the conveyor 5 restarts the conveying operation, and the crushed object 27 is discharged to the outside of the processing tank 11. At this time, the crushed object 27 a crushed to be smaller than the through hole 25 passes between the fixed electrodes 13 and is received on the auxiliary conveyor 33, and is similarly discharged to the outside of the processing tank 11 by the auxiliary conveyor 33.

In the present embodiment, the case where the high voltage pulse is applied at only one stop position where the position of the through hole 25 of the conveyor belt 3 coincides with the counter electrode 15 has been described as an example. The electric crushing method according to the invention is not limited to this, and the step of moving the conveyor belt 3 at every formation pitch of the through holes 25 is repeated, and a high voltage pulse is intermittently applied a plurality of times at each stop position. It may be. According to such a method, lightning discharge can be more evenly passed through the entire crushed object 27, and more reliable electric crushing can be realized.

The crushed material 27 discharged from the processing tank 11
Are transferred from the ends of the conveyor 5 and the auxiliary conveyor 33 to the recovery conveyor 35. The crushed object 27 transferred to the recovery conveyor 35 is separated according to the purpose by using various means as described above.

As described above, according to the electric crushing apparatus 1 described above, the material 27 to be crushed is conveyed by the conveyor belt 3 into the processing tank 11, and in the processing tank 11, the crushing processing area 7 of the conveyor belt 3 is conveyed. A lightning discharge is generated by applying a high voltage pulse to the fixed electrode 13 and the counter electrode 15 which are provided above and below to sandwich them. By passing this lightning discharge inside the crushed object,
The crushed object 27 can be electrically crushed. Therefore, the object to be crushed 27 under the transfer state conveyed by the conveyor 5
Electric crushing treatment can be performed on the crushed object 27
It becomes possible to carry out continuous treatment, which could not be carried out by a batch treatment in which a certain amount of electricity is crushed by a certain amount, and it is possible to greatly improve the crushing treatment capacity.

Further, all the counter electrodes 15 are simultaneously provided with the through holes 2.
The position 5 corresponds to that of the counter electrode transport belt 3
Enables lightning discharge without any intervention. By providing a plurality of counter electrodes 15, it is possible to sequentially generate lightning discharge at a plurality of locations in the crushing processing region 7, increasing the frequency (probability) of the discharge path passing through the crushed object, and Highly efficient processing is possible.

Furthermore, since the counter electrode 15 can be arranged close to the crushed object 27, the distance between the electrodes and the applied voltage can be freely combined, and the thickness and strength of the crushed object 27 can be improved. It can be set to the optimum lightning discharge condition. For example, as shown in FIG. 3A, by bringing the counter electrode 15 close to the object to be crushed 27, creeping discharge that occurs when the height of the discharge is relatively high can be suppressed, and efficient electric crushing can be realized.

Further, since the voltage is applied to the crushed object 27 in the stopped state a plurality of times, it is possible to repeatedly apply lightning discharge to the same position of the crushed object 27 a plurality of times. As a result, even if the object 27 to be crushed is not destroyed by one discharge, the probability of crushing is increased by providing the object 27 to be crushed with a plurality of lightning discharges, and the chance of crushing the object 27 to be crushed is increased. It becomes possible. Therefore, by repeatedly performing lightning discharge until the crushed object 27 is finally destroyed, the crushed object 27 can be reliably electrically crushed.

Next, a second embodiment of the electric crushing device according to the present invention will be described. FIG. 4 is a configuration diagram of a main part showing a second embodiment of an electric crushing device according to the present invention, and FIG.
FIG. 3 is a side view showing a fixed electrode and a counter electrode in the embodiment of FIG. The same members as those shown in FIGS. 1 to 3 are designated by the same reference numerals, and duplicate explanations will be omitted. In the electric crushing device 41 according to this embodiment, the fixed electrode 43 is formed in the same rod shape as the counter electrode 15. A plurality of rod-shaped fixed electrodes 43 are provided upright in the conveyance direction of the crushed object 27 and the width direction of the conveyance belt 3 so as to correspond to the counter electrode 15. Further, between the fixed electrodes 43, a lattice-shaped or rail-shaped support member 45 that supports the transport surface of the transport belt 3 is arranged.

According to this electric crushing device 41, both the counter electrode 15 and the fixed electrode 43 are rod-shaped, and lightning discharge is easily generated between the tips of the rod-shaped electrodes 15, 43 which are vertically opposed to each other on the same straight line. The direction in which the lightning discharge occurs easily becomes fixed in the direction passing through the crushed object 27 (direction excluding the detouring direction for the crushed object).

Next, a third embodiment of the electric crushing device according to the present invention will be described. FIG. 6 is a configuration diagram of essential parts showing an electric crushing device according to a third embodiment of the present invention, and FIG.
FIG. The same members as those shown in FIGS. 1 to 5 are designated by the same reference numerals, and a duplicate description will be omitted. The electric crushing device 51 according to this embodiment cooperates with the conveyor belt 3 in at least the crushing processing area 7 to hold the crushed object 27 and press the conveyor belt 5.
An upper conveyor 55 having 3 is provided above the conveyor 5.

The upper conveyor 55 forms, for example, a circumferential track in which an endless pressing and conveying belt 53 is stretched in an inverted trapezoidal shape. Further, like the conveyor belt 3, the pressing conveyor belt 53 is formed in a lattice shape having a plurality of through holes 25. Therefore, the counter electrode 15 has the pressing and conveying belt 53.
The fixed electrode 43 is opposed to the fixed electrode 43 through the through hole 25 and the through hole 25 of the conveyor belt 3. The pressing conveyance belt 53 is an inclined surface of the conveyance belt 3 on the loading side of the processing tank 11,
Also, on the inclined surface on the discharge side of the processing tank 11, a circumferential track is formed so as to press the conveyor belt 3 so that the crushed object 27 can be held.

In this way, the crushed object 27 sandwiched between the conveyor belt 3 and the pressing conveyor belt 53 is shown in FIG.
As shown in, it will be compressed with a predetermined pressing force,
The crushed objects 27 are conveyed in a state where the space between them is reduced and the density is high. The pressing force can be obtained by manufacturing the conveyor belt 3 and the pressing conveyor belt 53 from a rubber material and stretching them with a predetermined tension. Therefore, a supporting member for supporting the lower surface of the conveyor belt 3 can be omitted.

According to the electric crushing device 51, the upper conveyor 55 is pressed against the conveyor belt 3 in the crushing processing area 7 of the conveyor 5 from above, and the crushed object 27 placed on the conveyor belt 3 is It moves in the processing tank 11 while being sandwiched by the conveyor belt 3 and the upper conveyor 55. As a result, even the crushed object 27 such as wood having a lower specific gravity than the liquid 9 in the processing tank 11 can be electrically crushed with respect to the crushed object in the transfer state without floating on the liquid surface. In addition, by sandwiching the crushed object 27 between the conveyor belt 3 and the upper conveyor 55, the crushed object 27 can be made into a high-density lump, increasing the probability that a lightning discharge will pass through the crushed object 27. It enables efficient electric crushing.

In each of the above-mentioned embodiments, the case where the conveyor 5 is stopped every length in the conveying direction of the crushing processing area 7 and the crushed object 27 is electrically crushed intermittently has been described as an example. In the electric crushing method using each of the electric crushers described above, by changing the control from the control device 17, the counter electrode 15 is moved while the transfer belt 3 is being transferred.
Alternatively, a method of applying a high voltage pulse may be applied every time the through holes 25 coincide with each other. That is, according to such an electric crushing method, continuous electric crushing can be performed without stopping the conveyor 5 at all. In this case, by increasing the number of the counter electrodes 15, the crushed object 27 can be electrically crushed without lowering the crushing effect by lightning discharge.

[0048]

As described in detail above, according to the electric crushing apparatus of the present invention, a conveyor equipped with a conveyor belt having a through hole is used, and the crushing processing area of this conveyor is in the liquid in the processing tank. So that a high voltage is applied to the lower fixed electrode and the upper counter electrode that sandwich the crushing treatment area,
It is possible to perform the electric crushing process on the crushed object in the state of being transferred by the conveyor, and it is possible to enable the continuous processing, which is not possible with the batch process of crushing the crushed object by the constant amount. As a result, the crushing capacity of the crushed object can be greatly improved.

According to the electric crushing method of the present invention, the conveying operation of the conveying belt is stopped at the position where the through hole coincides with the counter electrode and a high voltage is applied between the fixed electrode and the counter electrode. A voltage can be applied to the crushed object in a stopped state a plurality of times, and a plurality of lightning discharges can be repeatedly applied to the same location of the crushed object. As a result, even if the object to be crushed is not destroyed by one discharge, the probability of crushing can be increased by supplying the object to be crushed multiple times.
It is possible to increase the chances of crushing the crushed object.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a main part showing a first embodiment of an electric crushing device according to the present invention.

FIG. 2 is a perspective view showing a positional relationship between a through hole of a conveyor belt and a counter electrode.

FIG. 3 is an operation explanatory view showing the retracted state of the counter electrode in (a) and the lowered state in (b).

FIG. 4 is a configuration diagram of a main part showing a second embodiment of an electric crushing device according to the present invention.

FIG. 5 is a side view showing a fixed electrode and a counter electrode according to the second embodiment.

FIG. 6 is a configuration diagram of essential parts showing a third embodiment of an electric crushing device according to the present invention.

7 is a cross-sectional view taken along the line AA of FIG.

[Explanation of symbols]

1,41,51 ... Electric crusher 3 ... Conveyor belt 5 ... Conveyor 7 ... Crushing area 9 ... Liquid 11 ... Treatment tank 13, 43 ... Fixed electrode 15 ... Counter electrode 16 ... High-voltage pulse generator (high-voltage generator) 25 ... Through hole 27 ... Object to be crushed 53 ... Pressing conveyor belt 55 ... Upper conveyor

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) B09B 3/00 ZAB B09B 3/00 ZABZ (72) Inventor Toyohisa Fujita Hirota 13 Akita City Akita Prefecture 4 (72) Inventor Atsushi Shibayama 9-33-3 F-Term (reference) Tegata Kyushitacho, Akita City, Akita 4D004 AA22 CA04 CA43 CB13 CB46 CC03 CC15 4D067 CG01 EE04 EE42 GA11 GA16 4G075 AA22 AA37 BB10 CA15 CA61 DA02 EC21 ED11 ED11 ED11

Claims (7)

[Claims] 1. A conveyor for conveying an object to be crushed by a conveyor belt having a plurality of through holes on a conveying surface, and a treatment tank for storing an insulating liquid and immersing at least a crushing treatment area of the conveyor in the liquid. A fixed electrode provided below the crushing processing area of the conveyor in the processing tank, a bar-shaped counter electrode provided to face the fixed electrode across the crushing processing area of the conveyor, the fixed electrode and the facing electrode An electric crushing device comprising: a high voltage generating means for applying a high voltage between the electrode and the electrode. 2. The electric crushing device according to claim 1, wherein a plurality of the counter electrodes are provided so as to correspond to the through holes in the crushing processing region of the conveyor. 3. The electric crushing device according to claim 1, wherein the counter electrode is supported so as to be movable toward and away from the conveyor belt. 4. The electric crushing device according to claim 1, wherein the fixed electrode is formed of a plurality of rod-shaped electrodes corresponding to the respective counter electrodes. 5. An upper conveyor having a pressing conveyor belt for sandwiching the object to be crushed at least with the conveyor belt in the crushing processing area is provided above the conveyor. Item 4. The electric crushing device according to any one of items 4. 6. A fixed electrode provided at a lower portion with the crushing treatment area sandwiched therebetween by immersing at least the crushing treatment area of a conveyor having a conveyer belt having a plurality of through holes on the conveyance surface, in a liquid in a treatment layer. This is an electric crushing method of crushing the crushed object on the conveyor belt in the crushing processing area by applying a high voltage between the counter electrode and the rod-shaped counter electrode provided above, and the through holes are aligned with the counter electrode. An electric crushing method characterized in that the conveyance operation of the conveyor belt is stopped at a position and the high voltage is applied. 7. A fixed electrode provided at a lower portion with the crushing treatment region sandwiched therebetween by immersing at least the crushing treatment region of a conveyor equipped with a conveyer belt having a plurality of through holes on its conveyance surface, in a liquid in a treatment layer. A high voltage is applied between a bar-shaped counter electrode provided above and an electric crushing method for crushing the object to be crushed on the conveyor belt in the crushing area, while operating the conveyor belt. An electric crushing method characterized in that the high voltage is applied at each timing when the through holes are aligned with the counter electrode.