JP2011050921A - Granulating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the efficiency of granulation treatment and to uniformize the quality of granules. <P>SOLUTION: In the granulating device 10, since a fixed amount of sheet-like object to be treated which is supplied inside a hopper 34 to capacity is crushed and granulated by a device body 12, the quality of the granules is uniformized. Also, since the amount of the sheet-like object to be treated which can be supplied to the device body 12 (treatment tank 16) by one supply work can be increased by an amount corresponding to the volume of the hopper 34, the efficiency of the granulation treatment is improved. Also, the flow-down of the sheet-like object to be treated from the inside of the hopper 34 to the inside of the treatment tank 16 is regulated by an agitator 80 provided inside the hopper 34, and the sheet-like object to be treated inside the hopper 34 is forcibly made to flow down into the treatment tank 16 by rotating the agitator 80 by an agitation motor 88. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a granulating apparatus that crushes a sheet-like object to be processed (for example, a synthetic resin sheet or a synthetic resin film) supplied into a processing tank and forms it into granules.

  In a conventional granulating apparatus (for example, refer to Patent Document 1), a predetermined amount of processed material such as a used synthetic resin sheet is supplied into the processing tank, and the lid of the processing tank is closed, and the processing tank is provided in the processing tank. The blades and the rotary blade are rotated to crush the workpiece. Then, when the surface of the crushed pieces is semi-gelled by the collision friction between the crushed pieces, a certain amount of cooling water is sprayed into the treatment tank. Thereby, the surface of a crushing piece is rapidly cooled and the granular granulated material rounded as a whole is manufactured.

JP-A-48-64552

  By the way, in the actual work site using the granulation apparatus as described above, in order to improve the efficiency of the granulation process, the blade body and the rotary blade body are rotated with the lid of the treatment tank being opened, and the object to be processed there Are being introduced one after another. The material to be processed is repeatedly crushed, reduced in volume, and charged, and efficiently processed in large quantities. However, since the object to be processed is manually input, the amount of the object to be processed is not constant, and the ratio of the cooling water amount to the amount of the object to be processed is not uniform. For this reason, there is a problem that the degree of cooling and the particle size are not uniform, and the quality (eg, bulk specific gravity) of the granulated product is not uniform.

  In view of the above facts, the present invention has an object to obtain a granulating apparatus capable of improving the efficiency of the granulation treatment and uniforming the quality of the granulated product.

  The granulating apparatus according to the invention described in claim 1 is provided above the processing tank, the apparatus main body for crushing the sheet-like object to be processed supplied into the processing tank and forming it into a granular shape, and the processing tank. A hopper to which the object to be processed is supplied inside the tank, a stirring member that is provided in the hopper and agitates the object to be processed in the hopper by rotating, and the stirring member is rotated. The stirring member is rotatably supported with respect to the hopper, and is rotated by the driving source, each of which has a longitudinal axis direction of the rotating shaft, and the rotation A plurality of swiveling portions that are arranged in the circumferential direction of the rotating shaft on the outer side in the radial direction of the shaft, and that turn around the axis of the rotating shaft when the rotating shaft rotates; Projecting radially outward of the rotating shaft It is characterized by having a stirring portion that is rotated integrally.

  In the granulating apparatus according to claim 1, a sheet-like object to be processed (for example, a synthetic resin sheet) supplied into the hopper is provided in a processing tank provided below the hopper and communicated with the hopper. Supplied (flows down). The sheet-like object to be processed supplied into the processing tank is crushed by the apparatus main body and formed into a granular shape. For this reason, for example, if a sheet-like object to be processed is fully supplied into the hopper and then the apparatus main body is operated, a certain amount of the sheet-like object to be supplied supplied is crushed and granulated. The quality of the granulated product can be made uniform. And since the quantity of the sheet-like processed material which can be supplied to a processing tank by one supply operation | work can be increased only by the part of the volume of a hopper, the efficiency of a granulation process can be improved.

  Furthermore, in this granulator, the stirring member provided in the hopper interferes with the workpiece in the hopper. For this reason, for example, the flow of the sheet-like object to be processed from the hopper into the treatment tank can be regulated or suppressed by the stirring member. Further, when the rotating shaft of the stirring member is rotated by the drive source, the stirring portion protruding outward in the radial direction of the rotating shaft is rotated integrally with the rotating shaft. Thereby, the sheet-like workpiece in the hopper is agitated and forcibly pushed into the treatment tank. Therefore, the supply of the sheet-like object to be processed from the hopper to the processing tank can be controlled.

  In addition, the agitation member of this granulation apparatus has a plurality of swivel portions, each of which has a longitudinal axis in the direction of the rotating shaft and is arranged in the circumferential direction of the rotating shaft outside in the radial direction of the rotating shaft. The plurality of revolving parts revolve around the axis of the rotating shaft when the rotating shaft rotates. Since these turning parts turn (rotate) around the rotating shaft at a speed faster than the outer peripheral surface of the rotating shaft, it is possible to prevent or suppress the sheet-like workpiece from being wound around the stirring member.

  A granulating apparatus according to a second aspect of the present invention is the granulating apparatus according to the first aspect, characterized in that the width of the agitating portion increases from the distal end side toward the proximal end side. Yes.

  In the granulating apparatus according to claim 2, since the width of the stirring portion of the stirring member increases from the distal end side toward the proximal end side and is formed in a taper shape, the stirring portion forms a sheet. The workpiece can be pushed smoothly into the treatment tank.

  A granulating apparatus according to a third aspect of the present invention is the granulating apparatus according to the first or second aspect, wherein a plurality of the agitating portions are provided side by side in the axial direction of the rotating shaft. These stirring sections are arranged so as to be shifted from each other in the circumferential direction of the rotation shaft.

  In the granulating apparatus according to claim 3, when the rotation shaft of the stirring member is rotated, the plurality of stirring portions arranged in the axial direction of the rotation shaft rotate integrally with the rotation shaft. Since these agitating portions are arranged so as to be shifted from each other in the circumferential direction of the rotation shaft, the sheet-like workpieces in the hopper can be agitated effectively.

  The granulating apparatus according to the invention of claim 4 is provided above the processing tank, the apparatus main body for crushing the sheet-like object to be processed supplied into the processing tank and forming it into a granular shape, and the processing A hopper to which the object to be processed is supplied into an interior communicating with the tank, a rotating shaft provided in the hopper and supported to be rotatable with respect to the hopper, and an agitation projecting outward in the radial direction of the rotating shaft A stirring member that stirs the workpiece in the hopper by being rotated, a drive source that rotates the stirring member, and a rotation direction of the stirring member that controls operation of the drive source And a control device for pausing the rotation of the stirring member for a predetermined time during the reversal until it is determined that the object to be processed in the hopper has decreased below a predetermined amount. It is characterized by that.

  In the granulating apparatus according to claim 4, a sheet-like object to be processed (for example, a synthetic resin sheet) supplied into the hopper is provided in a processing tank provided below the hopper and communicated with the hopper. Supplied (flows down). The sheet-like object to be processed supplied into the processing tank is crushed by the apparatus main body and formed into a granular shape. For this reason, for example, if a sheet-like object to be processed is fully supplied into the hopper and then the apparatus main body is operated, a certain amount of the sheet-like object to be supplied supplied is crushed and granulated. The quality of the granulated product can be made uniform. And since the quantity of the sheet-like processed material which can be supplied to a processing tank by one supply operation | work can be increased only by the part of the volume of a hopper, the efficiency of a granulation process can be improved.

  Furthermore, in this granulator, the stirring member provided in the hopper interferes with the workpiece in the hopper. For this reason, for example, the flow of the object to be processed from the inside of the hopper into the processing tank can be regulated or suppressed by the stirring member. Further, when the rotating shaft of the stirring member is rotated by controlling the operation of the drive source by the control device, the stirring portion protruding outward in the radial direction of the rotating shaft is rotated integrally with the rotating shaft. Thereby, the sheet-like to-be-processed object in a hopper is stirred, and is forcedly pushed into a processing tank. Therefore, the supply of the object to be processed from the hopper to the processing tank can be controlled.

  Moreover, in this granulation apparatus, the rotation direction of the stirring member is alternately reversed by the control device controlling the operation of the drive source. Thereby, the bias | inclination of the sheet-like to-be-processed object in a hopper by rotating a stirring member to one direction can be prevented. In addition, the control device pauses the rotation of the stirring member for a predetermined time when the rotation direction of the stirring member is alternately reversed until it is determined that the sheet-like workpiece in the hopper has decreased to a predetermined amount or less. Thereby, winding of the sheet-like to-be-processed object to a stirring member can be prevented or suppressed. In other words, if the rotation direction of the stirring member is continuously and alternately reversed, the sheet-like workpiece may be wound so as to be squeezed onto the rotating shaft of the stirring member, but the stirring member is reversed when the stirring member is reversed. When the rotation of the member is temporarily stopped, the narrowing of the sheet-like object to be processed becomes loose during the stop time. Thereby, when a stirring member rotates again, a sheet-like processed material can be shaken off from a stirring member.

  On the other hand, when the sheet-like object to be processed in the hopper is reduced to less than a predetermined amount, the pause time is omitted, and the rotation direction of the stirring member is continuously reversed alternately. In this state, the amount of the sheet-like object to be pushed into the treatment tank from the hopper is reduced, and the sheet-like object that has dropped to the lower side of the stirring member, that is, the treatment tank side is lowered (the treatment tank side) by the stirring member. ). Thereby, it is suppressed that the sheet-like to-be-processed object which fell to the lower side of the stirring member floats to the hopper side. In addition, by rotating the rotation direction of the stirring member alternately and alternately, small pieces of the sheet-like object to be processed attached to the stirring member can be shaken off.

  The granulation apparatus according to the invention described in claim 5 is the granulation apparatus according to claim 4, further comprising a temperature detector that detects the temperature in the processing tank, and the control device is provided for the temperature detector. When the detected temperature is equal to or higher than a set temperature, it is determined that the object to be processed in the hopper is reduced to a predetermined amount or less.

  In the granulation apparatus according to claim 5, the control device determines that the sheet-like object to be processed in the hopper is a predetermined amount or more when the temperature in the processing tank detected by the temperature detector is lower than the set temperature. To do. On the other hand, as the crushing process in the processing tank proceeds, the temperature in the processing tank rises due to the collision friction of the crushed sheet-like object (crushed pieces). Thereby, when the temperature in the processing tank detected by the temperature detector becomes equal to or higher than the set temperature, the control device determines that the sheet-like object to be processed in the hopper has decreased to a predetermined amount or less. Therefore, it is possible to determine the amount of the sheet-like workpiece in the hopper with a simple configuration.

  As described above, in the granulation apparatus according to the present invention, the efficiency of the granulation treatment can be improved and the quality of the granulated product can be made uniform.

It is a front view of the granulation apparatus concerning a 1st embodiment of the present invention. FIG. 2 is a sectional view taken along line 2-2 of FIG. FIG. 3 is a sectional view taken along line 3-3 in FIG. 2. It is a perspective view of the agitator which is a structural member of the granulation apparatus shown by FIG. It is a front view of the stirring plate which comprises the agitator shown by FIG. It is a time chart for demonstrating rotation control of the agitator in the first half of the granulation process of the granulation apparatus which concerns on 2nd Embodiment of this invention. It is a time chart for demonstrating rotation control of the agitator in the granulation process second half of the granulation apparatus which concerns on 2nd Embodiment of this invention.

<First Embodiment>
FIG. 1 is a front view of a granulating apparatus 10 according to the first embodiment of the present invention. 2 is a cross-sectional view taken along line 2-2 of FIG. 1, and FIG. 3 is a cross-sectional view taken along line 3-3 of FIG. In FIG. 1 to FIG. 3, some members are not shown.

  The granulating apparatus 10 according to the first embodiment is a waste for crushing a sheet-like workpiece (scrap material) such as a used or unused synthetic resin sheet or a synthetic resin film into a granular shape. It is a plastic processing apparatus and includes an apparatus main body 12. Note that the unused sheet-like workpiece includes a remaining material of a processed product die-cut from a roll-shaped original product. The apparatus main body 12 has a frame 14 formed in a substantially box shape, and a processing tank 16 is attached to the upper part of the frame 14.

  The processing tank 16 is formed in a bottomed cylindrical shape, and is arranged in a state where the axial direction is along the vertical direction of the granulating apparatus 10. The upper end of the processing tank 16 is open, and a columnar main shaft 18 passes through the center of the bottom wall of the processing tank 16. The main shaft 18 is coaxially disposed with respect to the processing tank 16 and is rotatably supported by the frame 14 via a plurality of bearings. A pulley 20 is attached to the lower end portion of the main shaft 18.

  On the other hand, a main motor 22 is provided on the side of the frame 14. The main motor 22 is disposed with the output shaft protruding downward, and is supported by the frame 14 via a support member 24. A pulley (not shown) is attached to the output shaft of the main motor 22, and a plurality of belts 26 are wound around the pulley and the pulley 20 described above. For this reason, when the main motor 22 rotates the output shaft, the rotational force of the output shaft is transmitted to the main shaft 18 via the pulley, the belt 26, and the pulley 20 attached to the output shaft, so that the main shaft 18 is rotated. It has become. The main motor 22 is electrically connected to a control device (not shown) mounted on the granulation apparatus 10 and its operation is controlled by this control device.

  As shown in FIG. 2, the upper end side of the main shaft 18 protrudes into the processing tank 16, and a blade body 28 is attached to the protruding portion. The blade body 28 is formed in a long rectangular bar shape, and the main shaft 18 is inserted into a cylindrical connecting portion provided at a central portion in the longitudinal direction and is keyed. For this reason, the blade body 28 rotates integrally with the main shaft 18 with both ends in the longitudinal direction protruding in the radial direction of the main shaft 18.

  A rotary blade body 30 formed in a block shape is attached to the upper part of both end portions in the longitudinal direction of the blade body 28. The rotary blade 30 is disposed in the vicinity of the inner wall of the processing tank 16 and turns in a state where a predetermined gap is secured between the rotary blade body 30 and the inner wall of the processing tank 16.

  A fixed blade body 32 formed in a plate shape is fixed to the inner wall of the processing tank 16. The fixed blade body 32 is disposed in the vicinity of the upper side of the turning locus of the rotary blade body 30 and faces the turning locus with a predetermined gap. This gap can be adjusted by changing the thickness of a collar (not shown) disposed between the bottom wall of the processing tank 16 and the blade body 28.

  A cutting blade 30A is formed at the upper end corner of the rotating blade body 30 in the rotation direction front side (arrow A direction side in FIG. 3), and the fixed blade body 32 has a rotation blade 30 in the rotation direction rear side. A cutting blade 32A is formed at the lower end corner (on the side of the arrow A in FIG. 3).

  On the other hand, a hopper 34 is provided above the processing tank 16 described above. The hopper 34 is formed in a cylindrical shape having a larger diameter than the processing tank 16 and long in the axial direction, and is disposed coaxially with respect to the processing tank 16. The upper end portion of the hopper 34 is closed by the upper wall 34A, and the lower end side of the hopper 34 is drawn into a funnel shape. The lower end portion of the hopper 34 is reduced in diameter to the same extent as the diameter of the processing bath 16, and is coupled to the upper end portion of the processing bath 16. Thereby, the hopper 34 and the processing tank 16 are integrally connected, and the hopper 34 is supported by the frame 14 via the processing tank 16. Moreover, the lower end part of the hopper 34 is opening, The inside of the hopper 34 and the inside of the processing tank 16 are connecting via the said opening part.

  A workpiece input port 36 is formed in the side wall 34 </ b> B of the hopper 34. The processing object input port 36 is for supplying (inputting) an object to be processed into the hopper 34, and is opened and closed by a door 38 rotatably attached to a side wall 34B of the hopper 34. Yes.

  Further, a supply pipe 40 for supplying water into the processing tank 16 is connected to the lower end side of the hopper 34 (the drawn portion). One end of the supply pipe 40 (not shown) is connected to a water supply source (not shown), and water is supplied into the treatment tank 16 by opening an electromagnetic valve 42 attached to an intermediate portion of the supply pipe 40. The

  On the other hand, a temperature sensor 44 (temperature detector) for detecting the temperature in the processing tank 16 is attached to the side wall of the processing tank 16. The temperature sensor 44 is electrically connected to the control device described above. This control device is electrically connected to the electromagnetic valve 42, and when the temperature sensor 44 detects that the inside of the processing tank 16 has reached a predetermined temperature, the electromagnetic valve 42 is opened for a predetermined time. ing. As a result, a certain amount of water is supplied (sprayed) from the supply pipe 40 into the treatment tank 16.

  Further, a bowl-shaped discharge port 46 for discharging the granulated material granulated in the processing tank 16 to the outside of the apparatus is attached to the lower side of the side wall of the processing tank 16. Thus, the inside of the processing tank 16 communicates with the outside of the apparatus. The discharge port 46 is opened and closed by a discharge shutter 49 driven by a discharge cylinder 48.

  The discharge cylinder 48 includes a cylinder body 50 and a piston 52, and is configured to drive the piston 52 by the driving force of the discharge motor 54. The discharge shutter 49 is attached to the distal end portion of the piston 52, and relative rotation with respect to the cylinder body 50 is restricted by a detent 56 spanned between the piston 52 and the cylinder body 50. Further, the base end side of the piston 52 is covered with a bellows 58, so that intrusion of dust or the like between the piston 52 and the cylinder body 50 is prevented.

  On the other hand, an agitator 80 (stirring member) for stirring the object to be processed in the hopper 34 is provided at an intermediate portion in the vertical direction of the hopper 34. The agitator 80 is disposed above the drawn portion on the lower end side of the hopper 34 and below the central portion in the vertical direction of the hopper 34, and includes a rotating shaft 82 that traverses the hopper 34. . The rotary shaft 82 is disposed in a state where the axial direction is along the radial direction (horizontal direction) of the hopper 34, and both end portions in the axial direction penetrate the side walls 34 </ b> B of the hopper 34 and protrude outward in the radial direction of the hopper 34. .

  One end of the rotating shaft 82 in the axial direction (the left end in FIG. 2) is rotatably supported by a bearing 84 attached to the side wall 34B of the hopper 34. Further, the other axial end portion (the right end portion in FIG. 2) of the rotary shaft 82 is inserted into a gear case 86 attached to the side wall of the hopper 34, and a bearing (not shown) attached to the gear case 86 is inserted. It is rotatably supported.

  A plurality of gears (not shown) are accommodated in the gear case 86. A stirring motor 88 is attached to the upper part of the gear case 86, and the driving force of the stirring motor 88 is transmitted to the rotary shaft 82 through the plurality of gears. Thereby, the rotating shaft 82 is rotated around the axis.

  Further, as shown in FIG. 4, a plurality of (two in this embodiment) stirring plates 90 are attached to the rotating shaft 82. These stirring plates 90 are arranged side by side in the axial direction of the rotating shaft 82, and include a base portion 90A formed in a disc shape as shown in FIG. A circular through hole 92 is formed in the axial center portion of the base portion 90 </ b> A, and the rotating shaft 82 passes coaxially through the through hole 92. A flange portion (not shown) is provided at an intermediate portion in the axial direction of the rotating shaft 82, and the flange portion and the base portion 90A are fastened by bolts. Thereby, each stirring plate 90 rotates integrally with the rotating shaft 82.

  A pair of arm portions 90B (stirring portions) are provided on the outer peripheral portion of the base portion 90A. These arm portions 90B are disposed on opposite sides in the circumferential direction of the base portion 90A, and project outward in the radial direction of the rotating shaft 82. Each arm portion 90B is formed in a substantially triangular shape (tapered shape) with an R at the distal end portion, and the width dimension is increased from the distal end side toward the proximal end side. In the present embodiment, the pair of arm portions 90B provided on one stirring plate 90 and the pair of arm portions 90B provided on the other stirring plate 90 are shifted by 90 degrees in the circumferential direction of the rotating shaft 82. Arranged in a state.

  Further, the agitator 80 includes a plurality of swiveling bars 94 (swivel portions) provided on the radially outer side of the rotation shaft 82. These swivel rods 94 are made of a long pipe material, and are arranged side by side at equal intervals in the circumferential direction of the rotary shaft 82 with the longitudinal direction (axial direction) being along the axial direction of the rotary shaft 82. ing. For this reason, the outer diameter dimension of the main body portion of the agitator 80 is expanded by the swivel rods 94.

  The intermediate portion in the axial direction of each swivel rod 94 passes through a through hole 96 (see FIG. 5) formed on the outer peripheral side of the base portion 90A, and is welded to the base portion 90A. Further, both ends in the axial direction of each swivel rod 94 are welded to discs 98 provided on both ends in the axial direction of the rotating shaft 82. A rotating shaft 82 passes through the axial center portion of these disks 98 coaxially.

  The stirring motor 88 that rotates the agitator 80 is electrically connected to the control device described above, and the operation is controlled by the control device. Specifically, the control device alternately reverses the rotation direction of the agitating motor 88 every predetermined operating time. Thereby, the agitator 80 repeats forward rotation and reverse rotation alternately. In this case, the operation time for forward rotation of the agitator motor 88 is set to a time for the agitator 80 to rotate 180 degrees in the forward direction, and the operation time for the reverse rotation of the agitator motor 88 is 180 degrees for the agitator 80 in the reverse direction. The rotation time is set.

  Next, the operation and effect of the first embodiment will be described.

  When using the granulating apparatus 10 having the above-described configuration, the door 38 of the processed material input port 36 of the hopper 34 is opened, and a sheet-like processed material (for example, used material) is inserted into the hopper 34 from the processed material input port 36. A so-called air cap (trade name), etc., hereinafter referred to as “sheet-like workpiece”) is introduced. The sheet-like object to be processed put into the hopper 34 is caught by the agitator 80 and is prevented from dropping into the processing tank 16.

  Then, when the sheet-like workpiece is fully supplied into the hopper 34, the door 38 of the workpiece input port 36 is closed, and an operation switch (not shown) provided in the granulating apparatus 10 is turned on. When the operation switch is turned on, the control device operates the main motor 22 to rotate the blade body 28 and also operates the stirring motor 88 to rotate the agitator 80. Thereby, the sheet-like workpiece in the hopper 34 is agitated by the plurality of arm portions 90B of the agitator 80.

  Therefore, even when the sheet-like workpieces are entangled with each other in the vicinity of the lower end opening of the hopper 34 and do not naturally fall into the processing tank 16 (when a so-called bridge occurs), the bridge is eliminated (destroyed). Therefore, the sheet-like object to be processed in the hopper 34 can be satisfactorily dropped into the processing tank 16.

  The sheet-like object to be processed dropped into the processing tank 16 is caught by the front edge in the rotational direction of the blade body 28, and the longitudinal end side (the inner wall of the processing tank 16) of the blade body 28 due to the centrifugal force accompanying the rotation. Side). The sheet-like object to be processed moved to the inner wall side of the processing tank 16 is cut and crushed between the blade edge 30A of the rotary blade body 30 and the blade edge 32A of the fixed blade body 32 and jumped upward by the blade body 28. And cutting and crushing as described above are repeated. As a result, the sheet-like workpiece is cut and crushed into crushed pieces having a size that fits in the gap between the rotary blade 30 and the fixed blade 32.

  And the sheet-like to-be-processed object which newly falls in the processing tank 16 from the inside of the hopper 34 is repeatedly crushed and volume-reduced, and is mass-processed efficiently. As a result, the sheet-like object to be processed put into the hopper 34 is reduced in volume to several tenths in the processing tank 16. The sheet-like object (crushed pieces) reduced in volume in this way is repeatedly lifted upward by the blades 28, and the crushed pieces collide with each other and the frictional heat causes the surface of each crushed piece to half. Gelled. Thereby, each crushing piece is shape | molded into the roundish granule as a whole.

  When the inside of the processing tank 16 reaches a predetermined temperature due to friction between the crushed pieces as described above, the control device opens the electromagnetic valve 42 and supplies (sprays) a certain amount of water from the supply pipe 40 into the processing tank 16. The Thereby, the surface of the crushed pieces semi-gelled as described above is rapidly cooled, and fusion between the crushed pieces is prevented. During the rapid cooling, water vapor is generated in the processing tank 16, but the water vapor is discharged from the processing tank 16 by the operation of a suction blower (not shown). The granulated material solidified by the rapid cooling is discharged to the outside of the processing tank 16 through the discharge port 46 when the discharge shutter 49 is opened by the discharge motor 54 of the discharge cylinder 48. This completes the granulation process.

  By the way, as explained in the section of the background art, in an actual work site where a conventional granulating apparatus is used, in order to improve the efficiency of the granulating process, the blade body and the rotary blade body with the lid of the processing tank being opened. Is rotated, and sheet-like objects to be processed are successively fed thereto. In this case, since the sheet-like workpiece is manually loaded into the processing tank where the rotary blade is rotating at high speed, it is necessary to ensure safety at the time of loading.

  In the case of the above-described working method, as described in the background art section, since the amount of the sheet-like object to be processed that is put into the processing tank is not constant, the quality of the granulated material varies. There is. That is, if a large amount of sheet-like workpieces are put into the treatment tank, frictional heat is generated by collision friction between the crushed pieces, so that it does not take much time to reach the predetermined temperature in the treatment tank. For this reason, the processing time is shortened, and the processing capacity is increased correspondingly, but the crushed pieces may be overheated. On the contrary, if a small amount of the sheet-like object to be processed is put into the processing tank, frictional heat due to collision friction between the crushed pieces is hardly generated, and it takes time until the inside of the processing tank reaches a predetermined temperature. For this reason, processing time may become long and granulation may not be successful. However, in any of the above cases, since a certain amount of water is supplied into the treatment tank, the degree of cooling and the granulation degree of the granulated product are not uniform. As a result, the quality of the granulated product (bulk specific gravity, etc.) becomes non-uniform, causing a problem of adversely affecting the selling price. In actual work sites, water is supplied manually into the treatment tank in order to make the ratio of the amount of water supplied relative to the amount of the sheet-like object to be treated. There is a problem that skill is required.

  In contrast, in the granulating apparatus 10 according to the first embodiment, as described above, the apparatus main body 12 is operated in a state where the sheet-like workpiece is fully supplied into the hopper 34, and is supplied to the full state. A certain amount of the sheet-like workpiece is crushed and granulated in the treatment tank 16. For this reason, while being able to make constant time until the crushed piece (granulated material) crushed in the processing tank 16 becomes predetermined | prescribed temperature, a fixed amount of water is supplied with respect to a fixed amount of granulated material. Can be supplied. Therefore, the degree of cooling and the granulation degree of the granulated product can be made uniform, and thereby the quality of the granulated product can be made uniform.

  Moreover, in the granulating apparatus 10 according to the first embodiment, the amount of the sheet-like workpiece that can be supplied to the processing tank 16 by one supply operation can be increased by the volume of the hopper 34. Therefore, it is possible to granulate a large amount of the sheet-like object to be processed at a time, and to improve the efficiency of the granulation process. Therefore, in order to improve the efficiency of the granulation treatment as in the prior art, there is no need to put the sheet-like workpiece into the treatment tank 16 while the rotary blade 30 or the like is rotating. Sex can be secured.

  In the first embodiment, since the agitator 80 provided in the hopper 34 interferes with the sheet-like workpiece in the hopper 34, the sheet-like workpiece flows down from the hopper 34 into the treatment tank 16. Can be regulated by the agitator 80. Further, by rotating the agitator 80 by the agitation motor 88, the sheet-like object to be processed in the hopper 34 can be forced to flow down (push in) into the processing tank 16. Therefore, the supply of the sheet-like object to be processed from the hopper 34 into the processing tank 16 can be controlled. As a result, it is possible to prevent the main motor 22 from being overloaded by suddenly supplying a large amount of the sheet-like object to be processed into the processing tank 16, and even when a bridge occurs, the bridge can be prevented. It can be eliminated (destroyed) well. That is, in the first embodiment, the input amount of the sheet-like workpiece can be made constant by the hopper 34, and the supply of the sheet-like workpiece to the treatment tank 16 can be controlled by the agitator 80. Therefore, the granulation process can be stabilized.

  In the first embodiment, since the rotation shaft 82 of the agitator 80 is disposed perpendicular to the dropping direction of the sheet-like workpiece, the sheet is placed on the agitator 80 when the sheet-like workpiece is long. Although the object to be processed may be wound, the winding can be prevented by the plurality of swiveling bars 94 provided in the agitator 80. That is, the agitator 80 includes a plurality of swiveling rods 94 (swivel portions) provided on the outer side in the radial direction of the rotating shaft 82, and a main body portion (a portion other than the stirring plate 90) of the agitator 80 by these swiveling rods 94. The outer diameter of the is expanding. Since these swiveling bars 94 swivel (rotate) around the axis of the rotating shaft 82 at a speed faster than the outer peripheral surface of the rotating shaft 82 when the agitator 80 is swung, the sheet-like workpiece is placed on the main body portion of the agitator 80. It becomes difficult to wind.

  Even when the plurality of swiveling rods 94 are omitted and the outer diameter of the rotating shaft 82 is increased, the peripheral speed of the outer peripheral surface of the rotating shaft 82 increases, and therefore, the sheet-like workpiece is hardly wound around the rotating shaft 82. In this case, however, the mass of the agitator including the rotating shaft 82 becomes heavy. In this respect, since the agitator 80 according to the first embodiment has a main body portion formed in a bowl shape by the plurality of swivel rods 94, the mass of the agitator 80 is suppressed from being unnecessarily increased, and The peripheral speed of the main body can be increased. Thereby, it can prevent or suppress that a sheet-like processed material winds around the main-body part of agitator 80, and is firmly fixed, and can supply a sheet-shaped processed material into processing tank 16 smoothly.

  And, since the wrapping of the sheet-like object to be processed around the agitator 80 is prevented or suppressed in this way, it can be avoided that a part of the sheet-like object is left in the hopper 34 without being processed, The amount of the sheet-like workpiece to be supplied into the processing tank 16 can be stabilized. Therefore, the quality of the granulated product can be made uniform also by this.

  In addition, since it is possible to impart an appropriate resistance to the sheet-like workpiece by the plurality of swiveling rods 94, the stirring action of the sheet-like workpiece by the agitator 80 and the treatment tank 16 for the sheet-like workpiece by the agitator 80 are provided. The inward pushing effect is improved. Therefore, the efficiency of the granulation process in the processing tank 16 can be improved.

  Further, in the first embodiment, the arm portion 90B of the agitator 80 has a width dimension that increases from the distal end side toward the proximal end side, and is formed in a taper shape. Therefore, the arm portion 90B forms a sheet shape. The object to be processed can be smoothly pushed into the processing tank 16.

  Further, in the first embodiment, a plurality of arm portions 90B of the agitator 80 are provided side by side in the axial direction of the rotating shaft 82, and these arm portions 90B are arranged 90 ° apart from each other in the circumferential direction of the rotating shaft 82. Yes. For this reason, when the agitator 80 rotates by 180 degrees in the forward direction and the reverse direction, the sheet-like workpiece in the hopper 34 can be stirred well, and the bridge can be effectively destroyed.

  In addition, since the rotation direction of the agitator 80 is alternately reversed, the unevenness of the sheet-like workpiece in the hopper 34 due to the rotation of the agitator 80 in one direction can be prevented.

  In the first embodiment, the plurality of swiveling rods 94 swirling around the axis of the rotating shaft 82 are constituted by long pipes and extend along the axial direction of the rotating shaft 82. Therefore, it is possible to effectively prevent or suppress the winding of the sheet-like workpiece around the rotating shaft 82 by these swiveling bars 94.

  In the first embodiment, the case where the plurality of swivel rods 94 (swivel part) of the agitator 80 is constituted by a long pipe has been described. However, the present invention is not limited to this, and the swivel part of the agitator 80 is not limited thereto. Any structure can be used as long as it rotates around the rotation shaft 82 during rotation, and the configuration can be changed as appropriate.

  In the first embodiment, the case where the agitator 80 includes two stirring plates 90 and each stirring plate 90 includes a pair of arm portions 90B (stirring portions) has been described. However, the present invention is not limited thereto. First, the number and shape of the agitation units can be changed as appropriate.

<Second Embodiment>
Next, a second embodiment of the present invention will be described. In addition, about the structure and effect | action fundamentally similar to the said 1st Embodiment, the same code | symbol as the said 1st Embodiment is provided, and the description is abbreviate | omitted.

  The granulation apparatus according to the second embodiment has basically the same configuration as that of the first embodiment, but in this embodiment, the control device is in a state where the temperature detected by the temperature sensor 44 is less than the set temperature. That is, in the first half of the process in which the temperature in the processing tank 16 has not risen, it is determined that a predetermined amount or more of the sheet-like workpiece is present in the hopper 34, and the agitation motor 88 is in accordance with the time chart shown in FIG. Control the operation of

  In this case, the control device alternately reverses the direction of rotation of the agitating motor 88 as shown in FIG. 6, but during this inversion, the agitating motor 88 is operated for a predetermined pause time t (for example, 5 seconds). Stop. Thereby, the agitator 80 repeats forward rotation and reverse rotation intermittently with a pause time t (interval). The operating time T for forward rotation and reverse rotation of the agitator 80 is set to 10 seconds, for example.

  That is, in this embodiment, the agitator 80 intermittently repeats forward and reverse rotations in the first half of processing in which a large amount of sheet-like workpieces exist around the agitator 80. Thereby, winding of the sheet-like processed material around the agitator 80 can be prevented or suppressed. That is, if the rotation direction of the agitator 80 is continuously and alternately reversed, the sheet-like workpiece may be wound around the agitator 80 so that the agitator 80 is rotated when the agitator 80 is reversed. When temporarily stopped, the narrowing of the sheet-like workpieces becomes loose during the pause time. Thereby, when the agitator 80 rotates again, the sheet-like processed material can be shaken off from the agitator 80. Therefore, it is possible to prevent or suppress the sheet-like workpiece from being wound around the agitator 80 and being firmly fixed. Further, the agitator 80 intermittently repeats forward and reverse rotations, so that the bridge can be effectively destroyed, and the sheet-like workpiece can be smoothly supplied into the processing tank 16.

  On the other hand, in the latter half of the process in which the sheet-like object (crushed pieces) is melted in the treatment tank 16, the control device raises the temperature detected by the temperature sensor 44 to a set temperature or higher so that the sheet-like material in the hopper 34 is obtained. It is determined that the object to be processed has decreased below a predetermined amount, and the operation of the stirring motor 88 is controlled according to the time chart shown in FIG.

  In this case, as shown in FIG. 7, the control device alternately reverses the rotation direction of the agitating motor 88 every predetermined operating time T (for example, 10 seconds) in a state where the above-described pause time t is omitted. As a result, the agitator 80 continuously repeats forward rotation and reverse rotation.

  That is, in the latter half of the processing, most of the sheet-like processed material is reduced in the processing tank 16 and a space is generated around the agitator 80 (the sheet-like processed material around the agitator 80 is reduced). The rotational direction of the agitator 80 is continuously and alternately reversed. In this state, the amount of the sheet-like object to be pushed into the processing tank 16 from the hopper 34 is reduced, and the sheet-like object that has dropped to the lower side of the agitator 80, that is, the processing tank 16 side is lowered by the agitator 80 ( It is pushed into the treatment tank 16 side). Thereby, since the sheet-like object to be processed that has dropped to the lower side of the agitator 80 is suppressed from floating to the hopper 34 side, the efficiency of the crushing process in the processing tank 16 is improved. Further, by rotating the rotation direction of the agitator 80 continuously and alternately, small pieces of the sheet-like object to be processed attached to the agitator 80 can be shaken off. Thereby, it is possible to prevent the small pieces from being shaken off, complete the granulation process, and prevent the small pieces from being mixed into the granulated product when the granulated product is discharged. Therefore, the quality of the granulated product can be made more uniform.

  As described above, in the second embodiment, by changing the operation control of the agitator 80 in the first half and the second half of the process, it is possible to achieve both prevention of winding of the sheet-like workpiece around the agitator 80 and improvement of the processing efficiency. Can do. Moreover, since it is set as the structure fundamentally similar to the said 1st Embodiment, the effect similar to the said 1st Embodiment is also obtained.

  In the second embodiment, the control device determines the amount of the sheet-like workpiece in the hopper 34 based on the temperature detected by the temperature sensor 44. However, the present invention is not limited to this. The controller may determine the amount of the sheet-like workpiece in the hopper 34 based on the elapsed time from the start of operation. Further, for example, in the latter half of the processing, the control device determines the amount of the sheet-like object to be processed in the hopper 34 by detecting a change in which the load current of the stirring motor 88 decreases or a change in which the load current of the main motor 22 decreases. It may be configured.

  In the first embodiment and the second embodiment described above, the case where the rotation angle of the agitator 80 in the forward direction and the rotation angle in the reverse direction are both set to 180 degrees has been described. The rotation angle of the agitator 80 can be appropriately changed. For example, the rotation angle in the positive direction of the agitator 80 may be set slightly larger than 180 degrees so that the rotation range of the agitator 80 is shifted every cycle.

DESCRIPTION OF SYMBOLS 10 Granulation apparatus 12 Apparatus main body 16 Processing tank 34 Hopper 44 Temperature sensor (temperature detector)
80 Agitator (stirring member)
82 Rotating shaft 88 Stirring motor (drive source)
90B arm (stirring section)
94 Revolving bar (revolving part)

Claims (5)

An apparatus main body that crushes the sheet-like workpiece supplied into the processing tank and forms it into a granular shape,
A hopper that is provided above the processing tank and in which the object to be processed is supplied to the inside communicating with the processing tank;
A stirring member provided in the hopper and rotated to stir the object to be processed in the hopper;
A drive source for rotating the stirring member;
With
The stirring member is
A rotating shaft supported rotatably with respect to the hopper and rotated by the driving source;
Each of the plurality of shafts has a longitudinal axis direction of the rotary shaft, and is provided side by side in the circumferential direction of the rotary shaft on the outer side in the radial direction of the rotary shaft. The swivel of
A stirring portion that protrudes radially outward of the rotating shaft from the plurality of swiveling portions and is rotated integrally with the rotating shaft;
A granulating apparatus characterized by comprising:   The granulation apparatus according to claim 1, wherein the agitation section has a width dimension that increases from the distal end side toward the proximal end side.   The said stirring part is provided with two or more along with the axial direction of the said rotating shaft, The said several stirring part is mutually shifted | deviated and arrange | positioned in the circumferential direction of the said rotating shaft. Item 3. The granulating apparatus according to Item 2. An apparatus main body that crushes the sheet-like workpiece supplied into the processing tank and forms it into a granular shape,
A hopper that is provided above the processing tank and in which the object to be processed is supplied to the inside communicating with the processing tank;
A rotating shaft provided in the hopper and supported rotatably with respect to the hopper and a stirring portion protruding outward in the radial direction of the rotating shaft, and the workpiece in the hopper by being rotated A stirring member for stirring,
A drive source for rotating the stirring member;
The rotation direction of the stirring member is alternately reversed by controlling the operation of the drive source, and the reversal is performed for a predetermined time until it is determined that the object to be processed in the hopper has decreased below a predetermined amount. A control device for stopping the rotation of the stirring member;
A granulator equipped with.   A temperature detector for detecting the temperature in the processing tank is provided, and the control device reduces the object to be processed in the hopper to less than a predetermined amount when the temperature detected by the temperature detector is equal to or higher than a set temperature. The granulating apparatus according to claim 4, wherein the granulating apparatus is determined.

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