JP2019010632A - Rotary separator - Google Patents

Abstract

To provide a rotary separator capable of stably exhibiting the separation function of a processed product, by effectively removing a sticking object from a screen for permeating the sticking object.SOLUTION: In a rotary separator 1, a rotatingly driven cylindrical screen 5 and a rotary vane 6 are coaxially arranged in a casing 2 having an input port 23 and a discharge port. The cylindrical screen 5 comprises a screen body 51 of a regular dodecagon, and is rotatingly driven via a sprocket 17 and a pin 56 by a driving shaft 18 closely adjacently arranged on the outer peripheral side. A rotary brush 19 for contacting with an outer peripheral surface of the cylindrical screen 5 is installed on the driving shaft 18. A processed product guided into the cylindrical screen 5 from the input port 23 is agitated by the rotary vane 6, and a base body and a sticking object are separated, and a separation object is discharged to the outside by permeating through a permeation hole of the screen body 51 by centrifugal force. The separation object sticking to the outside and the inside and the permeation hole inside of the screen body 51 is removed by the rotary brush 19 rotatingly driven together with the cylindrical screen 5.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a rotary separation device that can effectively separate and remove deposits attached to a flexible substance.

  2. Description of the Related Art Conventionally, in a waste treatment process, a rotary type separation device has been used to wash waste plastic contaminated with food residues. As this type of rotary separation device, a cylindrical screen that is rotationally driven in a casing having an inlet and an outlet for a workpiece, and a rotary blade that is arranged inside the screen and is rotationally driven. A cleaning device provided is known (see, for example, Patent Document 1). In this cleaning apparatus, cleaning water is sprayed onto the object to be processed input from the input port, guided to the inside of the screen, and stirred with a rotary blade to separate the residue. The separated residue is discharged to the outside of the screen by centrifugal force generated by the rotating screen, and discharged from the lower part of the casing surrounding the screen to the outside of the apparatus. On the other hand, the waste plastic from which the residue has been separated is transported inside the screen by rotating blades and discharged out of the apparatus through a discharge port connected to the inside of the screen.

  This cleaning device is provided with a scraper for removing residues adhering to the screen. The scraper is formed of a rubber plate that is in contact with the outer peripheral surface of the screen, a plate material that supports the rubber plate, and a mounting bracket that fixes the plate material inside the casing. As the screen rotates, the scraper is formed so that the rubber plate in contact with the outer peripheral surface of the screen scrapes off residues that cannot be blown off by centrifugal force, thereby eliminating clogging of the screen.

JP 2014-223778 A

  However, the conventional rotary separation device is in contact with the outer peripheral surface of the screen in a state where the rubber plate of the scraper is stationary with respect to the casing, and the screen is rotated to remove the residue. There is a problem that it is difficult to remove the residue present on the inner side of the outer peripheral surface. In particular, when the screen is formed of a plate-like body having a through hole like punching metal, it is difficult to remove the residue remaining inside the through hole.

  Therefore, an object of the present invention is to effectively remove deposits from a screen that transmits the deposits in a rotary separation device that separates and removes deposits from a flexible workpiece such as waste plastic. An object of the present invention is to provide a rotary separation device capable of stably exhibiting the separation function of an object to be processed.

In order to solve the above-mentioned problems, the rotary separation device of the present invention has an input port for an object to be processed at one end portion and an outlet port for an object to be processed at the other end portion. A collection unit for collecting the separated product and a casing having a separated product outlet,
A perforation hole disposed rotatably in the casing, having one end communicating with the input port and the other end communicating with the discharge port, having a polygonal cross section and allowing the separated material to permeate through a peripheral surface. A cylindrical screen having a screen body provided;
A cylindrical screen drive unit that rotationally drives the cylindrical screen;
A rotary vane that is rotatably arranged inside the cylindrical screen, has a rotary shaft that is rotatably supported by being coaxially supported with the cylindrical screen, and a plurality of blades that are arranged on the outer peripheral surface of the rotary shaft. When,
A cylindrical screen cleaning unit having a cleaning body disposed so as to be in contact with the outer peripheral surface of the cylindrical screen and a cleaning body driving unit that rotationally drives the cleaning body is provided.

  According to the above configuration, an object to be treated such as waste plastic is introduced from the inlet of the casing and guided to the inside of the cylindrical screen communicating with the inlet. The object to be processed inside the cylindrical screen is fed from one end side to the other end side of the cylindrical screen while being stirred by a rotating blade of a rotating blade. As the workpiece is agitated by the blade of the rotary blade, the deposit attached to the workpiece is separated, and the separated product is separated from the deposit by receiving centrifugal force from the rotary vane. It passes through the transmission hole of the screen body of the screen and is discharged to the outside. The separated matter discharged to the outside of the cylindrical screen falls inside the casing and is collected in the lower part, and is discharged out of the casing through the discharge port. The to-be-processed object which the deposit | attachment was isolate | separated and removed and remained inside the cylindrical screen is discharged | emitted from the discharge port of the casing connected with the other end part of a cylindrical screen.

  The rotary separation device of the present invention can be used to treat a workpiece to which a deposit is attached to a flexible substrate and separate the substrate and the deposit. As such an object to be processed, a substrate made of a flexible material such as plastic, paper, cloth or the like, and a deposit made of a liquid such as food residue or earth and sand, a viscous material or particles, etc. Is mentioned. The rotary separation device of the present invention can be used for cleaning the object to be processed by separating the deposits from the object to be processed. The rotary separation device according to the present invention includes dry cleaning for separating the substrate and the deposit without supplying water to the object to be processed, and wet cleaning for separating the substrate and the deposit by supplying water to the object to be processed. Either of these is possible.

  Further, since the screen body of the cylindrical screen has a polygonal cross section, the outer diameter side end of the blade of the rotating blade moves closer to and away from the inner peripheral surface of the screen body as the rotating blade rotates. repeat. That is, the gap formed between the outer diameter side end of the blade of the rotating blade and the inner peripheral surface of the screen body repeats increasing and decreasing as the rotating blade rotates. Thereby, the to-be-processed object between a braid | blade and a screen body is stirred effectively, and isolation | separation of a deposit | attachment is accelerated | stimulated.

  In addition, the cleaning body is disposed so as to contact the outer peripheral surface of the cylindrical screen, and the cleaning body is rotationally driven by the cleaning body driving unit, so that the separated matter attached to the outer peripheral surface of the cylindrical screen is effectively removed. Is done. In particular, the separation adhered to the permeation holes of the screen body of the cylindrical screen is effectively removed by the contact of the rotationally driven cleaning body or by the impact and vibration generated by the rotationally driven cleaning body. Is done. Here, the cleaning body can be formed to include a rotating shaft and a plurality of linear bodies planted around the rotating shaft. Moreover, the cleaning body can be formed including a rotating shaft and a substantially cylindrical porous body fixed around the rotating shaft. Further, the cleaning body can be formed to include a rotating shaft and a plurality of flexible plate-like bodies fixed radially around the rotating shaft. Moreover, the cleaning body can be formed including a rotating shaft and a cloth fixed around the rotating shaft.

  The rotary separation device according to an embodiment is characterized in that the cylindrical screen driving unit also serves as a cleaning body driving unit of the cylindrical screen cleaning unit.

  According to the above-described embodiment, the cylindrical screen driving unit that rotationally drives the cylindrical screen drives the cleaning body of the cylindrical screen cleaning unit that cleans the cylindrical screen, so the cleaning body driving unit is provided separately. Therefore, the cylindrical screen cleaning unit can be configured with a small number of parts.

In the rotary separation device of one embodiment, the cylindrical screen drive unit is
A drive shaft disposed adjacent to the outside of the cylindrical screen and extending parallel to the central axis of the cylindrical screen;
A plurality of teeth provided on the outer periphery of the cylindrical screen;
A gear connected to the drive shaft and meshing with the teeth;
The cleaning body of the cylindrical screen cleaning unit is attached to the drive shaft of the cylindrical screen driving unit.

  According to the above embodiment, the drive shaft arranged adjacent to the outside of the cylindrical screen is rotationally driven, and the driving force is transmitted from the gear connected to the drive shaft to the teeth of the cylindrical screen, so that the cylindrical shape is The screen is driven to rotate. At the same time, the cleaning body attached to the drive shaft rotates, and the cylindrical screen is cleaned by the rotating cleaning body. In this way, since the rotation driving of the cylindrical screen and the rotation driving of the cleaning body are performed by the common drive shaft, the cylindrical screen cleaning unit can be configured with a small number of parts. For example, a plurality of teeth provided on the outer peripheral portion of the cylindrical screen is formed by a cylindrical pin, a gear connected to the drive shaft is formed by a sprocket, and the cylindrical screen is rotationally driven by pin gear driving. Is preferred. The cleaning body may be fixed and attached to the drive shaft of the cylindrical screen drive unit and may rotate in the same direction as the drive shaft, or the drive shaft of the cylindrical screen drive unit may be connected via a reversing gear. And may rotate in the opposite direction to the drive shaft.

  In one embodiment, a self-lubricating resin is provided on at least one of an end surface of the cylindrical screen and an inner side surface of the casing facing the end surface of the cylindrical screen.

  According to the above-described embodiment, the self-lubricating resin provided on one or both of the end surface of the cylindrical screen and the inner side surface of the casing, which is the inner side surface facing the end surface of the cylindrical screen, The screen is smoothly rotated while being supported in the casing.

  In one embodiment, a self-lubricating resin is provided on at least one of an outer peripheral surface of the cylindrical screen and a support member that is installed inside the casing and supports the outer peripheral surface of the cylindrical screen. It has been.

  According to the embodiment, the cylindrical screen is placed in the casing by the self-lubricating resin provided on either or both of the outer peripheral surface of the cylindrical screen and the support member that supports the outer peripheral surface of the cylindrical screen. It is rotated smoothly in a supported state.

  In one embodiment, the rotating blade includes a blade group composed of a plurality of blades having the same length arranged at equal angles at the same axial position of the rotating shaft. A plurality of blades are arranged at equal intervals in the axial direction, and the blade placement angle is set to be shifted between adjacent blade groups by half the blade placement angle in the same blade group.

  According to the above embodiment, as the rotating blades are rotated by half the blade arrangement angle, the tips of the blades of every other blade group in the axial direction are in contact with the inner peripheral surface of the cylindrical screen sequentially. Release. Therefore, the number of times that the inner peripheral surface of the cylindrical screen and the tip of the blade are brought into contact with and separated from each other can be increased with a relatively small number of blades, and the workpiece can be efficiently stirred and fed in the axial direction. In addition, since the tip positions of the blades are aligned for every other blade group in the axial direction, the tips of these blades can be repeatedly contacted and separated simultaneously with the inner peripheral surface of the cylindrical screen, effectively. Stirring can be performed.

  In the rotary separation device according to an embodiment, the number of blades forming the blade group at the end on the inlet side is the number of blades forming the blade group at the central portion in the axial direction of the rotation shaft. Is set larger than.

  According to the above-described embodiment, the force generated by the blade group at the end portion on the input port side is larger than the force generated by the blade group at the central portion in the axial direction of the rotation shaft. Can be effectively sucked into the cylindrical screen.

  In one embodiment, the rotary blade has an inclination angle with respect to a plane passing through the center of the rotary shaft of the blade forming the blade group at the end on the discharge port side. It is set larger than the inclination angle of the blades forming the blade group.

  According to the above embodiment, since the force generated by the blade group at the end on the discharge port side is larger than the force generated by the blade group at the center of the rotating shaft, the object to be processed is tubular from the discharge port. It can be effectively discharged out of the screen.

  In the rotary separation device according to an embodiment, the plurality of blade groups located at the end of the rotary blade on the discharge port side are set to have a larger inclination angle as the blade is closer to the discharge port.

  According to the above-described embodiment, the force generated by the blade group at the end on the discharge port side is generated as the blade closer to the discharge port generates more effectively. Can be discharged.

It is a longitudinal section showing a rotation separation device of an embodiment of the present invention. It is a cross-sectional view which shows a rotation separation apparatus. It is a plane sectional view showing a rotation separation device. It is a side view which shows the cylindrical screen of a rotation separation apparatus. It is a figure which shows the upper part of the end surface of the casing of a rotation separation apparatus. It is a figure which shows the rotary blade of a rotation separation apparatus. It is a figure which shows the clearance gap between a cylindrical screen and a rotary blade.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a longitudinal sectional view showing a rotary separating apparatus according to an embodiment of the present invention, FIG. 2 is a transverse sectional view showing the rotary separating apparatus according to the embodiment, and FIG. 3 is a plan sectional view showing the rotary separating apparatus according to the embodiment. FIG. The rotary separation device 1 according to the embodiment attaches a substrate to an object to be treated, such as a liquid, a viscous material, and a granular material, on a flexible substrate such as plastic, paper, and cloth. Used to separate kimonos.

  The rotary separation device 1 has a casing 2 having an inlet for an object to be processed at one end and an outlet for discharging an object to be processed at the other end, and is rotatably disposed in the casing 2. Rotation as a polygonal tubular screen 5, a rotating blade 6 rotatably disposed inside the tubular screen 5, and a cleaning body disposed so as to be in contact with the outer peripheral surface of the tubular screen 5. A brush 19 is provided.

  The casing 2 has a substantially rectangular parallelepiped appearance. A rectangular parallelepiped-shaped screen accommodating space 20 a that accommodates most of the cylindrical screen 5 is formed in the upper part inside the casing 2. On the other hand, the inner lower portion of the casing 2 is provided with two inner walls 21 and 21 which are inclined so as to be connected to each other at the center of the lower end when viewed from one end portion toward the other end portion. In the meantime, a separated material collection space 20b is formed as a collection unit that collects separated materials connected to the lower portion of the screen accommodating space 20a. A screw conveyor 12 extending in the longitudinal direction of the casing 2 is provided at the lower end of the separated product collection space 20b, and the separated product is discharged to the end on the other end side in the feed direction of the screw conveyor 12. A separated product outlet 13 is provided. An input port 23 for an object to be processed is opened on an end surface 22 of one end portion of the casing 2, and an input unit 3 for inputting an object to be processed from the outside to the rotary separation device 1 is connected to the input port 23. Has been. This insertion part 3 has a generally inverted square frustum shape and is formed in a hopper shape with an open upper end. A discharge port for an object to be processed is opened at the end face of the other end of the casing 2, and a discharge duct 4 is connected to the discharge port. The discharge duct 4 extends in the transverse direction of the casing 2. It is connected to the. A cleaning substrate discharge port for discharging the cleaned substrate to the outside of the rotary separation device 1 is provided at the end of the screw conveyor 11 in the feeding direction.

  The cylindrical screen 5 has a polygonal cylindrical screen body 51 having a regular dodecagonal cross section. As shown in the side view of FIG. 4, the cylindrical screen 5 includes annular end frames 52, 52 positioned at both ends in the axial direction, and the end frames 52, 52 extending in the axial direction. The screen body 51 is held by a skeleton composed of a plurality of axial frames 54, 54 spanned between them and an annular central frame 53 located at the center in the axial direction. The screen body 51 is formed of punching metal, and when the object to be processed is waste plastic from municipal waste, a screen having a diameter of 3 mm or more and 10 mm or less can be used. 3 and 4, the screen body 51 is hatched in a hatched portion. However, the material of the screen body 51 is not particularly limited. In addition to the punching metal, a metal net or resin is used. It may be formed of a punching board made of resin, a net made of resin, or the like. Moreover, the cylindrical screen may have a polygonal cross section of not less than a dodecagon but not less than a dodecagon and not more than a hexagon.

  At one end of the cylindrical screen 5, pins 56 as a plurality of teeth for driving the cylindrical screen 5 are provided. The pin 56 has a cylindrical shape, and is arranged on the end surface of the annular flange 55 fixed so as to surround the outer peripheral surface of one end of the cylindrical screen 5, in a direction parallel to the axial direction of the cylindrical screen 5. It is fixed to be concentric with 5. The pin 56 meshes with the sprocket 17 as a gear, and the driving force is transmitted from the sprocket 17 so that the cylindrical screen 5 is rotationally driven. The cylindrical screen 5 is rotationally driven in the direction opposite to the rotary blade 6.

  A drive shaft 18 that drives the cylindrical screen 5 is disposed on the outer peripheral side of the cylindrical screen 5. The drive shaft 18 is disposed above the side of the cylindrical screen 5 and extends parallel to the central axis of the cylindrical screen 5. The drive shaft 18 is disposed so as to penetrate both end surfaces of the casing 2, and is rotatably supported by bearings disposed outside the both end surfaces of the casing 2. A sprocket 17 is fixed in the vicinity of the end face 22 on one end side of the drive shaft 18, and the sprocket 17 meshes with a pin 56 of the cylindrical screen 5. The drive shaft 18 is rotationally driven by a motor M disposed outside the casing 2, and the driving force is transmitted to the pin 56 via the sprocket 17 to rotationally drive the cylindrical screen 5. The motor M, the drive shaft 18, the sprocket 17 and the pin 56 constitute a cylindrical screen drive unit.

  The cylindrical screen 5 to be rotationally driven is supported in the axial direction on the end surface of the end frame 52 and is supported in the radial direction on the peripheral surface of the central frame 53. FIG. 5 is a view showing the upper part of the end face on one end side of the casing 2, and is a view showing a part of the support structure that supports the end of the cylindrical screen 5. As shown in FIG. 5, an annular sliding plate 24 is arranged on the end surface of the casing 2 at a position facing the end frame 52 of the cylindrical screen 5. The sliding plate 24 is made of stainless steel, and is adapted to support an axial load by contacting an end frame 52 of the rotating cylindrical screen 5. An annular bearing plate 58 made of a self-lubricating resin is fixed to the surface of the end frame 52 of the cylindrical screen 5 on the sliding plate 24 side. The bearing plate 58 may be made of PTFE (polytetrafluoroethylene) resin, PPS (polyphenylene sulfide) resin, PAR (polyarylate) resin, or the like. By using the bearing plate 58 formed of a resin having a self-lubricating property and a small friction coefficient, the cylindrical screen 5 is stabilized by a small amount of friction while supporting the load in the axial direction by the sliding plate 24. And can be rotated. Although the bearing plate 58 is provided on the cylindrical screen 5, it may be provided on the end surface of the casing 2.

  The support structure that supports the end of the cylindrical screen 5 includes four support rollers 15, 15, 15, 15 arranged on the outer peripheral side of the sliding plate 24. The support rollers 15 are arranged at an equal angle of 90 ° so as to surround the sliding plate 24. The support roller 15 includes a cylindrical metal rotating body that rotates in contact with the outer periphery of the end frame 52 of the cylindrical screen 5, a bearing that rotatably supports the rotating body, and an end portion on the bearing. It has a biasing body that applies a biasing force in the radial direction of the frame 52 and biases the end frame 52 of the cylindrical screen 5 with a rotating body. With these four support rollers 15, the outer periphery of the end frame 52 of the cylindrical screen 5 is urged and supported in the radial direction so that the cylindrical screen 5 rotates stably. .

  The sliding plate 24 that supports the cylindrical screen 5 in the axial direction is formed with a notch recess 25 at a circumferential position where the roller 15 is arranged and radially inside the rotating body of the roller 15. ing. The notch recess 25 is formed in a substantially trapezoidal shape when viewed from the outer peripheral side of the sliding plate 24 toward the center, and is formed with a thickness reduced from the surface. The trapezoidal cutout recess 25 is formed such that the long side of the trapezoid coincides with the outer peripheral edge of the sliding plate 24. When the cylindrical screen 5 is driven to rotate, the workpiece that has entered between the bearing plate 58 of the cylindrical screen 5 and the sliding plate 24 has an outer diameter along the oblique side of the trapezoidal cutout recess 25. It is formed to be discharged to the side.

  An end support frame 17 that supports the outer peripheral portion of the end frame 52 of the cylindrical screen 5 is disposed on the end surface of the casing 2 so as to follow a semicircular portion below the annular slide plate 24. . The end support frame 17 has an angle-shaped cross section, and is formed in an arc shape along the outer periphery of the sliding plate 24 when viewed in the axial direction. The end support frame 17 is fixed so that one angled flange is in close contact with the end surface of the casing 2 and the other flange supports the outer peripheral portion of the end frame 52 of the cylindrical screen 5. Is formed.

  A central support frame 60 that supports the outer peripheral surface of the central portion in the axial direction of the cylindrical screen 5 is provided inside the casing 2. The central support frame 60 has a T-shaped cross section formed by overlapping angle-shaped members and one flange of each other, and is formed in a semicircular shape when viewed in the axial direction. As shown in FIG. 4, a cylindrical bearing plate formed on the outer peripheral surface of the central frame 53 with a self-lubricating resin similar to the bearing plate 58 at the end is formed in the central portion of the cylindrical screen 5 in the axial direction. 59 is fixed. The cylindrical screen 5 is formed to be rotatable in a state in which the bearing plate 59 at the center of the cylindrical screen 5 is in contact with the central support frame 60. Thereby, the cylindrical screen 5 can be stably driven to rotate with little friction while supporting the radial load of the cylindrical screen 5. The bearing plate 59 is provided on the cylindrical screen 5, but may be provided on the central support frame 60. In this manner, the cylindrical screen 5 supports the axial load by the bearing plate 58 and the sliding plate 24 at the end, and supports the radial load by the bearing plate 59 and the central support frame 60 at the central portion. It is supposed to be.

  A rotating brush 19 for cleaning the cylindrical screen 5 is attached to the drive shaft 18 of the cylindrical screen drive unit. The rotating brush 19 has a cylindrical core material as a rotating shaft and bristles that are a plurality of linear bodies that are planted on the outer peripheral surface of the core material and extend in the radial direction. It is fixed by fitting outside. The bristles of the rotating brush 19 are made of metal, resin, or vegetable fiber. The rotating brush 19 has a length extending over the entire axial direction of the screen body 51 so as to contact the outer peripheral surface of the screen body 51 of the cylindrical screen 5. The drive shaft 18 rotates to drive the cylindrical screen 5 and the rotary brush 19 rotates to clean the cylindrical screen 5. The rotation direction of the rotary brush 19 is the same as the rotation direction of the drive shaft 18 and is set opposite to the rotation direction of the cylindrical screen 5. Thus, the motor M and the drive shaft 18 of the cylindrical screen drive unit also serve as a cleaning body drive unit that rotationally drives the rotary brush 19. Here, a reversing gear is provided between the core of the rotating brush 19 and the drive shaft 18 to reverse the rotating direction of the rotating brush 19 and the rotating direction of the driving shaft 18 so that the rotating brush 19 and the cylindrical screen 5 are in the same direction. It may be rotated. In addition to the rotating brush 19, the cleaning body can include a rotating shaft and a substantially cylindrical porous body fixed around the rotating shaft. As the porous body, a resin sponge or the like can be used, and as the cleaning body, a rotating shaft and a plurality of flexible plate-like bodies fixed radially around the rotating shaft are provided. Can be formed. As the flexible plate-like body, a plate-like rubber can be used. Moreover, as a cleaning body, it can form including a rotating shaft and the cloth fixed around the rotating shaft.

  FIG. 6 is a side view showing the rotary blade 6. The rotary blade 6 has a rotary shaft 61 and a plurality of blades 7, 8, 9 fixed to the outer peripheral surface of the rotary shaft 61. The blades 7, 8, 9 are formed in a rectangular shape when viewed from the front, and all extend radially when viewed from the axial direction of the rotating shaft 61. A plurality of blades 7, 8, 9 are arranged at the same axial position of the rotating shaft 61 to form a blade group. In each blade group, the blades 7, 8, 9 have the same length and are arranged at an equal angle around the rotation shaft 61. At one end of the rotary blade 6, a group of input-side blade groups is arranged, and at the other end of the rotary blade 6, two discharge-side blade groups are arranged, between the input-side blade group and the discharge-side blade group. In the middle blade group, about 10 to 30 groups are arranged. Hereinafter, the portion of the rotary blade 6 where the input blade group is disposed is referred to as an input portion, the portion where the intermediate blade group is disposed is referred to as an intermediate portion, and the portion where the discharge blade group is disposed is referred to as a discharge portion.

  The input side blade group is composed of six input side blades 7 more than the other blade groups, and these six input side blades 7 are arranged around the rotation shaft 61 at equal angles with each other. . The insertion side blade 7 is set to have an attachment angle with respect to the rotation shaft 61, that is, an inclination angle with respect to a plane passing through the center of the rotation shaft 61 larger than that of the intermediate blade 8 of the intermediate blade group. That is, the throwing blade 7 is set to have a larger inclination angle with respect to the plane passing through the center of the rotation shaft 61 than the intermediate blade 8. The attachment angle of the insertion side blade 7 can be set between 20 ° and 30 ° with respect to a plane passing through the center of the rotating shaft 61, and can be set at 27 °, for example. The input side blade 7 is subjected to mesh-like overlay welding on the surface in order to reduce wear caused by sand or metal pieces mixed in the input processing object.

  The intermediate blade group is composed of three intermediate blades 8, and these three intermediate blades 8 are arranged around the rotation shaft 61 at an equal angle with each other. The plurality of intermediate blade groups constituting the intermediate portion of the rotary blade 6 are arranged so as to be shifted by 60 °, which is half of the 120 ° arrangement angle of the intermediate blade 8, between adjacent intermediate blade groups. . That is, the intermediate blades 8a and 8b adjacent in the axial direction are set to be shifted from each other by 60 °. As a result, the intermediate blade group is set so that every other arrangement angle in the circumferential direction of the intermediate blade 8 matches. With such an arrangement, in the intermediate portion of the rotary blade 6, the front end portions of the intermediate blade 8 a and the intermediate blade 8 b are sequentially brought into contact with and separated from each other on the outer peripheral side of the rotary blade 6. Further, the tip of the intermediate blades 8a and 8b is set to pass six times for each rotation of the rotary blade 6. Further, the cylindrical screen 5 is also rotationally driven, so that the number of contact and separation between the corner of the cylindrical screen 5 and the tip of the intermediate blade 8 per unit time is increased. Further, the plurality of intermediate blade groups are arranged such that adjacent intermediate blades 8a and 8b are arranged without a gap in a side view. Thereby, a to-be-processed object is sent to an axial direction continuously. Further, the attachment angle of the intermediate blade 8 with respect to the rotation shaft 61 is set to be smaller than that of the input side blade 7 and the discharge side blade 9. The attachment angle of the intermediate blade 8 can be set between 10 ° and 20 ° with respect to a plane passing through the center of the rotation shaft 61, and can be set at 15 °, for example.

  The discharge side blade group is constituted by three discharge side blades 9, and these three discharge side blades 9 are arranged around the rotation shaft 61 at an equal angle with each other. The two discharge side blade groups constituting the discharge portion of the rotary blade 6 are arranged so as to be shifted from each other by 30 °. Further, the two groups of discharge side blade groups are set such that the arrangement positions in the axial direction overlap the discharge side blades 9 by about 40% in a side view. Thereby, the feed force of the processing object by the discharge side blade group is increased, and the processing object is effectively discharged from the discharge port. The discharge blade 9 is set so that the attachment angle with respect to the rotation shaft 61 is larger than that of the intermediate blade 8. The attachment angle of the discharge side blade 9 can be set between 20 ° and 50 ° with respect to a plane passing through the center of the rotation shaft 61. Further, of the two discharge-side blade groups of the discharge portion of the rotary blade 6, the discharge-side blade 9b closer to the discharge port has a larger attachment angle than the discharge-side blade 9a closer to the intermediate portion. Is set. The attachment angle of the discharge side blade 9a on the side close to the intermediate portion can be set between 20 ° and 35 °, and can be set at 28 °, for example. The attachment angle of the discharge side blade 9b on the side close to the discharge port can be set between 35 ° and 50 °, for example, 43 °.

  The rotary blade 6 is coaxially arranged inside the cylindrical screen 5, and the rotary shaft 61 is rotatably supported by bearings arranged outside the both end faces of the casing 2. A pulley 62 is connected to one end of the rotary shaft 61, and a rotational force is transmitted to the pulley 62 from a motor (not shown) via a V-belt, so that the rotary blade 6 is driven to rotate. As the rotary blade 6 is rotationally driven, the workpiece to be processed introduced from the inlet 23 of the casing 2 is sucked by the feeding force of the inlet blade group and sent to the other end side. The workpiece sucked and fed by the loading blade group is agitated while applying centrifugal force by the intermediate blade group to promote separation of the deposit adhered to the substrate of the workpiece and the substrate. Send the object to the other end. Further, the discharge blade group applies a force in the direction of the other end to the workpiece subjected to the separation process by the intermediate blade group and discharges it from the discharge port of the casing 2. In this way, the rotary blade 6 is formed so as to perform suction, stirring, separation, feeding and discharging with respect to the object to be processed.

  Using the rotary separator 1 having the above-described configuration, waste plastic collected as municipal waste is treated as an object to be treated, and food residue, oil, sand particles, dust, and fiber waste adhered to the waste plastic are removed. A case of cleaning will be described.

  Waste plastic is sorted out from the waste collected from homes and offices and cut into small pieces of 10mm to 150mm. In order to make this waste plastic piece available for various kinds of recycling, it is washed by the rotary separation device 1. The rotary separation device 1 performs dry cleaning for separating the substrate of the object to be processed and the deposits without supplying water into the rotary separation device 1. An object to be processed such as a cut waste plastic piece is fed into the loading unit 3. It is preferable that a predetermined amount of the particles to be treated is continuously charged into the charging unit 3 by a quantitative feeder or the like. The workpiece to be processed put into the charging unit 3 is sucked into the cylindrical screen 5 through the charging port 23 by the suction force generated by the charging blade 7 of the rotating rotary blade 6.

  The workpiece guided into the cylindrical screen 5 is stirred by the intermediate blade 8 of the rotating rotary blade 6 and receives centrifugal force and feed force in the other end direction. Here, as shown in the cross-sectional view in the direction perpendicular to the axis in FIG. 7, the distance between the tip of the rotating intermediate blade 8 and the inner peripheral surface of the screen body 51 is the maximum value at the corner 51 a of the screen body 51. While reaching D1, the minimum value D2 is reached at the center 51b of the side of the screen body 51. Thus, since the screen body 51 of the cylindrical screen 5 is a regular dodecagon, the gap between the tip of the intermediate blade 8 and the inner peripheral surface of the screen body 51 repeatedly expands and contracts, and therefore exists in this gap. As a result, the substrate and the deposit are effectively separated.

  The separated substance that is agitated by the rotating blade 6 and separated from the substrate is subjected to centrifugal force from the rotating blade 6, passes through the permeation hole of the screen body 51, and is discharged between the casing 2 and the cylindrical screen 5. And collected in the separated material collection space 20b. The separated matter collected in the separated matter collecting space 20b gathers at the lower end in the casing 2 by gravity, is sent to the other end side by the screw conveyor 12, and is discharged from the separated matter discharge port 13. The separated matter discharged from the separated matter discharge port 13 is subjected to dust treatment and wastewater treatment according to the kind of the separated matter.

  The base body from which the adhering matter is separated and removed by the rotary blade 6 is sent to the other end side by the intermediate blade 8, receives a stronger feeding force from the discharge side blade 9, and is discharged out of the casing 2 from the discharge port. . The object to be processed discharged outside the casing 2 is guided to the screw conveyor 11 through the discharge duct 4, sent in the width direction of the casing 2, and discharged from the cleaning substrate discharge port. Substrates such as waste plastic, cloth, and paper discharged from the cleaning substrate discharge port are subjected to recycling processing according to the material.

  In the rotary separation device 1 of this embodiment, as the cylindrical screen 5 is driven to rotate, the rotary brush 19 that contacts the outer surface of the cylindrical screen 5 is driven to rotate. Thereby, the separated matter attached to the outer surface of the screen body 51 of the cylindrical screen 5 is effectively removed from the screen body 51 by the rotary brush 19. Further, when the bristles of the rotating brush 19 enter the inside of the transmission hole of the screen body 51, the separated matter attached to the transmission hole is effectively removed. In addition, the regular dodecagonal screen body 51 tends to collect the object to be processed inside the corner portion. However, when the bristles of the rotating brush 19 enter the transmission holes of the screen body 51, the object to be processed enters the inside of the screen body 51. Can be removed. As a result, it is possible to effectively prevent the inconvenience that the processing capacity is lowered due to the substrate and the separated matter adhering to the cylindrical screen 5. As described above, according to the rotary separation device 1 of the present embodiment, the rotary brush 19 as a cleaning body is driven to rotate, so that not only the outer surface of the screen body 51 but also the object adhered to the inside or the inner surface of the transmission hole. The processed material can also be effectively removed. Further, when a cleaning plate having a flexible plate-like body, such as a rubber plate, fixed radially on the rotation shaft is used, the cleaning body rotates in contact with the screen body 51 of the cylindrical screen 5. By being driven, an impact or vibration is applied to the screen body 51, and the object to be processed attached to the outer surface, the transmission hole, or the inner surface of the screen body 51 can be effectively removed.

  In this embodiment, dry cleaning is performed in which water is not added to the object to be processed, but a water supply nozzle is provided in the vicinity of the inlet 23 of the casing 2 to remove dirt by adding water to the object to be processed. May be. That is, wet cleaning may be performed. Moreover, you may mix a detergent with water according to the kind of deposit | attachment.

DESCRIPTION OF SYMBOLS 1 Rotation separator 2 Casing 4 Discharge duct 5 Cylindrical screen 6 Rotating blade 7 Input side blade 8 Intermediate blade 9 Discharge side blade 11, 12 Screw conveyor 18 Cylindrical screen drive shaft 19 Rotating brush 51 Cylindrical screen body 61 Rotating shaft of rotating blade

Claims (9)

It has a processing object input port at one end and a processing object discharge port at the other end, and has a collecting part for collecting the separation from the processing object and a separation outlet at the lower part. A casing,
A perforation hole disposed rotatably in the casing, having one end communicating with the input port and the other end communicating with the discharge port, having a polygonal cross section and allowing the separated material to permeate through a peripheral surface. A cylindrical screen having a screen body provided;
A cylindrical screen drive unit that rotationally drives the cylindrical screen;
A rotary vane that is rotatably arranged inside the cylindrical screen, has a rotary shaft that is rotatably supported by being coaxially supported with the cylindrical screen, and a plurality of blades that are arranged on the outer peripheral surface of the rotary shaft. When,
A rotary separation device comprising: a cleaning body disposed so as to be in contact with the outer peripheral surface of the cylindrical screen; and a cylindrical screen cleaning section having a cleaning body driving section that rotationally drives the cleaning body. The rotary separation device according to claim 1,
The rotary separation device, wherein the cylindrical screen driving unit also serves as a cleaning body driving unit of the cylindrical screen cleaning unit. The rotary separation device according to claim 1,
The cylindrical screen drive unit is
A drive shaft disposed adjacent to the outside of the cylindrical screen and extending parallel to the central axis of the cylindrical screen;
A plurality of teeth provided on the outer periphery of the cylindrical screen;
A gear connected to the drive shaft and meshing with the teeth;
A rotary separation device, wherein a cleaning body of the cylindrical screen cleaning unit is attached to a drive shaft of the cylindrical screen driving unit. The rotary separation device according to any one of claims 1 to 3,
A rotary separation device, wherein a self-lubricating resin is provided on at least one of an end surface of the cylindrical screen and an inner surface of the casing facing the end surface of the cylindrical screen. The rotary separation device according to any one of claims 1 to 3,
A rotation characterized in that a self-lubricating resin is provided on at least one of the outer peripheral surface of the cylindrical screen and a support member that is installed inside the casing and supports the outer peripheral surface of the cylindrical screen. Separation device. The rotary separation device according to any one of claims 1 to 3,
The rotating blade includes a plurality of blade groups each having a plurality of blades of the same length arranged at equal angles at the same axial position of the rotating shaft at equal intervals in the axial direction of the rotating shaft. A rotation separation device, which is configured by being arranged and has a blade arrangement angle shifted by a half of a blade arrangement angle in the same blade group between adjacent blade groups. The rotary separation device according to claim 6,
In the rotary blade, the number of blades forming the blade group at the end on the inlet side is set to be larger than the number of blades forming the central blade group in the axial direction of the rotary shaft. Rotating separation device characterized. The rotary separation device according to claim 6,
The rotating blade has an inclination angle with respect to a plane passing through the center of the rotating shaft of the blade forming the blade group at the end on the discharge port side, and the blade forming the blade group in the central portion in the axial direction of the rotating shaft. A rotation separation device characterized by being set to be larger than an inclination angle. The rotary separation device according to claim 8,
The rotation separating apparatus according to claim 1, wherein the plurality of blade groups located at the end of the rotary blade on the discharge port side have a larger inclination angle as the blade is closer to the discharge port.

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