JP6226761B2 - Rotary sieve - Google Patents

Description

  The present invention relates to a rotary sieve machine that rotationally drives a sieve body to classify an object to be processed, and more particularly, to a rotary sieve machine that has a function of preventing clogging of the sieve body.

  Conventionally, rotary sieves have been used in a wide range of fields in order to sort workpieces based on dimensions. As the rotary sieve machine, a cylindrical sieve body having a predetermined aperture in the body, a casing that accommodates the sieve body, a drive device that rotationally drives the sieve body around a central axis, and the above An input part for introducing the object to be processed inside the sieve body, a first discharge part for discharging the object to be processed that has passed through the through hole of the sieve body from the casing, and an object to be processed remaining inside the sieve body. Some have a second discharge portion that discharges from the casing.

  In this rotary sieve machine, the sieve body is installed with the central axis inclined with respect to the horizontal plane, and the workpiece is introduced by the introduction unit from the opening of the end surface facing the upper side of the inclination direction of the sieve body, and is introduced. The workpiece is classified by the sieve body while moving in the rotating sieve body toward the lower side in the inclined direction. That is, an object to be processed that is smaller than the through hole of the sieve body passes through the through hole and is discharged from the first discharge port, while an object to be processed that is larger than the through hole of the sieve body has And is discharged from the second discharge portion. In this way, it is divided into a small-sized workpiece to be passed through the sieve body and a large-sized workpiece to be passed through the sieve body.

  In this type of rotary sieving machine, the object to be treated may adhere to the sieving body and become clogged. In order to prevent clogging of the sieve body, Patent Document 1 proposes a rotary sieve machine provided with a brush that comes into contact with the body of the sieve body from the outside. In this rotary sieve machine, the brush having a cylindrical shape is arranged in parallel with the sieve body, and this brush is rotationally driven at the same peripheral speed as the peripheral speed of the sieve body to be brought into contact with the sieve body. Thereby, the to-be-processed object adhering to the sieving body is pushed down from the outside of the sieving body to the inside, and the to-be-processed object is removed from the sieving body.

JP-A-10-272424

  However, in the above rotary sieving machine in which the brush is provided on the outside of the sieve main body, when the object to be processed contains a relatively large amount of moisture, the object to be processed that has been pushed down to the inside of the sieve main body by the brush It tends to be difficult to remove the object to be treated and adhered to the inside of the sieve body with a brush. As a result, there is a problem that the effect of preventing clogging tends to be insufficient.

  Then, the subject of this invention is providing the rotary sieve which can fully exhibit the clogging prevention effect, even if a to-be-processed object contains comparatively much moisture.

In order to solve the above-mentioned problem, the rotary sieve machine of the present invention has a cylindrical sieve body having a through hole in the body portion and arranged with the central axis inclined with respect to the horizontal plane,
A driving device for rotationally driving the sieve body around a central axis;
A casing for housing the sieve body,
An input unit for supplying an object to be processed into the sieve body;
A first discharge part for discharging the workpiece that has passed through the through hole of the sieve body from the casing;
A second discharge part for discharging the object to be processed remaining in the sieve body from the casing through the end face of the sieve body;
A brush disposed inside the sieve body and in contact with the inner surface of the body of the sieve body;
It is arranged outside the above-mentioned sieve body, and is provided with an air spraying part which blows air toward the inside of this sieve body.

  According to the said structure, the sieve main body accommodated in the casing is rotationally driven with a drive device, and a to-be-processed object is thrown into the upper part of the inclination direction with respect to the horizontal surface of this sieve main body by the injection | throwing-in part. The object to be processed put into the sieve body is classified into larger and smaller ones than the through holes of the sieve body as it moves in the sieve body from the upper side inclined to the horizontal plane to the lower side. . That is, an object to be processed that is smaller than the through hole of the sieve body falls to the outside of the sieve body through the through hole, and is discharged from the casing by the first discharge. On the other hand, the object to be processed which is larger than the through hole of the sieve body remains in the sieve body, and is discharged out of the casing by the second discharge part through the lower end face in the inclination direction with respect to the horizontal plane of the sieve body. When the amount of moisture in the workpiece to be put into the sieve body is relatively large, the workpiece may adhere to the rotationally driven sieve body and may be rotationally driven together with the sieve body. Here, since the rotary sieving apparatus of the present invention includes the brush and the air blowing unit, the object to be processed attached to the sieving body can be effectively removed. That is, the object to be treated attached to the sieve body is swept away from the sieve body by the brush disposed inside the sieve body and in contact with the inside of the body of the sieve body. Moreover, the to-be-processed object adhering to the sieve main body is blown off from the sieve main body by the air blown to the inner side of the sieve main body from the air spraying part arrange | positioned on the outer side of the sieve main body. In this way, the object to be treated attached to the sieve body is effectively separated by the brush inside the sieve body and the air blown from the outside of the sieve body. By the way, if a relatively large amount of water remains in the object to be processed detached from the sieve body, the object to be processed may reattach to the sieve body. However, when the object to be processed detached from the sieve main body comes into contact with the air flow blown from the air blowing section, the water content is reduced and it becomes difficult to reattach to the sieve main body. As a result, the amount of the object to be processed attached to the sieve body can be effectively reduced, and clogging of the sieve body can be effectively prevented. Thus, by providing a brush and an air spraying part, in addition to the effect of sweeping out the object to be processed by the brush, the effect of blowing off the object to be processed by the air from the air spraying part and the effect of reducing the amount of moisture can be achieved. As a result, clogging of the sieve body can be effectively prevented.

  In the rotary sieve machine according to an embodiment, the brush is formed in a cylindrical shape, a central axis is arranged in parallel with the central axis of the sieve body, and is rotated around the central axis.

  According to the embodiment, the object to be processed attached to the inside of the cylindrical sieve body is effectively swept out by the cylindrical brush that is driven to rotate about the central axis. Here, the cylindrical brush has a bristle extending radially outward from the outer peripheral side of the central axis, and the tip of the bristle is formed so as to form a cylindrical shape as a whole. it can.

  In one embodiment, the brush includes a rotating shaft into which a rotational force is introduced, and a plurality of brush units attached to the rotating shaft and connected in the extending direction of the rotating shaft.

  According to the above embodiment, since the brush is formed with the rotating shaft and the plurality of brush units, when a part of the brush hair is worn or damaged, the brush unit corresponding to the worn or damaged part is provided. Since replacement may be performed, the repair cost for brush wear can be reduced.

  In one embodiment of the rotary sieve, the brush unit is externally fitted to the rotary shaft and is engaged with each other so as not to move relative to each other in the circumferential direction, and an outer peripheral surface of the shaft cover piece. With planted bristles.

  According to the above embodiment, the brush can be easily formed by sequentially inserting the shaft cover pieces of the plurality of brush units through the rotating shaft and engaging them. Here, among the plurality of brush units, all the brush units are moved in the circumferential direction with respect to the rotation axis only by fixing the shaft cover pieces of the brush units located at both ends in the axial direction to the rotation axis. Can be fixed impossible.

  In the rotary sieve machine according to an embodiment, the air blowing unit is reciprocally driven in a direction parallel to the central axis of the sieve body.

  According to the above embodiment, air is blown to the sieve body that is rotationally driven around the central axis from the air blowing part that is driven to reciprocate in a direction parallel to the central axis of the sieve body. The processed material can be effectively removed.

  The rotary sieve of one embodiment is formed so that an object to be processed swept out by the brush is in contact with air from the air blowing unit.

  According to the said embodiment, the to-be-processed object swept out by the brush contacts the air from an air spraying part, and the water contained in a to-be-processed object reduces effectively. Therefore, it is possible to effectively prevent the inconvenience that the object to be processed detached from the sieve body reattaches to the sieve body.

  In the rotary sieve of one embodiment, the air blowing part has an elongated air outlet that extends in a direction parallel to the central axis of the sieve body.

  According to the above embodiment, air is blown from the elongated air outlet extending in the direction parallel to the central axis of the sieve body to the sieve body that is rotationally driven around the central axis. Can be effectively removed.

  In the rotary sieve machine according to one embodiment, a plurality of the air blowing parts are arranged in a direction parallel to the central axis of the sieve body.

  According to the above embodiment, the plurality of air blowing portions arranged in a direction parallel to the central axis of the sieve body, from the outside to the inside of the rotationally driven sieve body, at a plurality of locations in the direction parallel to the central axis. Can blow air. Accordingly, the object to be processed attached to the sieve body can be effectively removed.

  In the rotary sieve machine of one embodiment, a plurality of the air blowing parts are arranged in a direction parallel to the circumferential direction of the sieve body or a direction inclined with respect to the circumferential direction.

  According to the above-described embodiment, a plurality of air blowing portions arranged in a direction parallel to the circumferential direction of the sieve body or a direction inclined with respect to the circumferential direction are arranged in the circumferential direction from the outside to the inside of the sieve body that is rotationally driven. You can blow air to the place. Accordingly, the object to be processed attached to the sieve body can be effectively removed.

  The rotary sieve machine of one embodiment has an auxiliary air spraying part that blows air on the contact part between the brush and the sieve body.

  According to the above-described embodiment, air is blown to the contact portion between the brush and the sieve main body by the auxiliary air blowing unit, so that the object to be treated attached to the sieve main body can be effectively swept away from the sieve main body. it can. Here, the auxiliary air blowing part may blow air from the outside of the sieve body to the contact part between the brush and the sieve body, and also blow air from the inside of the sieve body to the contact part between the brush and the sieve body. May be. When air is blown from the inside of the sieve body to the contact part between the brush and the sieve body, an air outlet is provided on the rotating shaft of the brush, and air is blown out radially outward from the air outlet of this rotating shaft It is preferable to do this.

  The rotary sieve machine according to an embodiment includes a plurality of air outlets adjacent to each other in a direction parallel to the circumferential direction of the sieve body, and a direction parallel to the axial direction of the sieve body between the adjacent air outlets. A reversing drive device that reciprocates in opposite directions is provided.

  According to the embodiment, the plurality of air outlets adjacent in the direction parallel to the circumferential direction of the sieve main body are parallel to the axial direction of the sieve main body between the adjacent air outlets by the inversion driving device. Reciprocally driven in directions opposite to each other. Therefore, air can be uniformly blown to the sieve main body driven to rotate around the central axis by the plurality of air outlets.

It is a longitudinal section showing a rotary sieve machine of an embodiment of the present invention. It is a cross-sectional view of the rotary sieve of the embodiment. It is a side view which shows the air nozzle as an air spraying part. It is a bottom view of an air nozzle. It is a front view of an air nozzle. It is a side view which shows the rotating brush as a brush. It is a side view which shows the mutual connection part of the shaft cover piece of a brush unit.

  Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.

  The rotary sieve according to the embodiment of the present invention is a trommel shifter that sorts waste fragments such as municipal waste and objects to be processed such as wooden chips obtained by crushing wooden materials, based on dimensions, in particular. It is suitable for an object to be processed that contains a relatively large amount of water. In the present embodiment, a trommel shifter suitable for classification of municipal waste in which raw garbage is mixed will be described.

  As shown in the longitudinal sectional view of FIG. 1, a trommel shifter 1 according to the present embodiment includes a cylindrical screen 2 as a sieve body and a casing 10 that accommodates the cylindrical screen 2. The casing 10 is supported by the support frame 11 with the central axis inclined with respect to the horizontal plane. The support frame 11 is supported on the installation surface by the legs 12. The support frame 11 is provided with a driving device 30 that rotationally drives the cylindrical screen 2 and radial load rollers 28 and 28 that rotatably support the cylindrical screen 2. On the one end face located on the upper side in the inclination direction of the casing 10, the cylindrical object is passed through the opening of the one end face located on the upper side in the inclination direction of the cylindrical screen 2. 2 is provided. A lower part of the casing 10 is provided with a first discharge part 14 for discharging the workpiece that has passed through the cylindrical screen 2 and a second discharge part 15 for discharging the workpiece remaining in the cylindrical screen 2. ing. On the inner side of the cylindrical screen 2, a rotating brush 5 is provided as a brush in contact with the inner surface of the barrel portion of the cylindrical screen 2. In addition, a reciprocating nozzle device 4 having an air nozzle 42 as an air blowing portion that blows air inward from the outside of the body portion of the cylindrical screen 2 to the inside is provided on the outside of the cylindrical screen 2.

  The cylindrical screen 2 includes annular frames 22 and 23 disposed at both ends in the axial direction, and a plurality of axial frames 24 that are spanned between the annular frames 22 and 23 and extend parallel to the central axis. A net body 21 that forms a through hole is disposed in a body portion of a frame body that is formed by a plurality of auxiliary annular frames 25 attached to the plurality of axial frames 24. The mesh body 21 is formed by welding orthogonal axial lines and circumferential lines to each other, and is set to an opening of a reference dimension for classifying workpieces. In addition, it may replace with the net | network body 21 and may employ | adopt the board | plate material which has through-holes, such as a punching metal.

On the upper and lower annular frames 22, 23 in the inclination direction of the cylindrical screen 2, radial load rails 27, 27 extending in the circumferential direction are provided, and the radial load in contact with the surfaces of the radial load rails 27, 27 is provided. The rollers 28, 28 support the radial load of the cylindrical screen 2. Further, the annular frame 22 on the lower side in the inclination direction of the cylindrical screen 2 is provided with an axial load rail 26 extending in the circumferential direction. The axial load of the screen 2 is supported, and the axial movement of the cylindrical screen 2 is restricted. The cylindrical screen 2 is supported by the radial load rail 27 and the radial load roller 28 and the axial load rail 26 and the axial load roller 29 so as to be rotatable around the central axis. The radial load roller 28 and the axial load roller 29 are attached to the support frame 11 and the casing 10, and the radial load roller 28 attached to the support frame 11 and positioned on the upper side in the tilt direction is rotated by the driving device 30. Force is input. The radial load roller 28 is rotationally driven by the driving device 30, and the cylindrical screen 2 is rotationally driven around the central axis. The cylindrical screen 2 is driven at a peripheral speed of 0.5 to 2 m / sec depending on the object to be processed. When a to-be-processed object is a municipal waste, Preferably it is 0.8-1.7 m / sec.

  The casing 10 has a substantially cylindrical shape that surrounds the cylindrical screen 2, and a charging portion 13 is provided on the upper end surface in the inclined direction. The input unit 13 has an opening into which the workpiece is carried in at the upper end, and a funnel-shaped inlet portion whose width decreases from the upper end downward, and the workpiece to be processed in the casing 10 connected to the inlet portion. The duct part is formed with a leading duct part, and the end part of the duct part communicates with the annular frame 23 on the upper side in the inclination direction of the cylindrical screen 2. The first discharge portion 14 has a funnel-shaped cross section that decreases in width from the upper end toward the lower end opening in the cross section perpendicular to the axis, and is formed in a hopper shape that extends from one end to the other end of the cylindrical screen 2. . The upper end of the first discharge unit 14 is opposed to the lower end of the body portion of the cylindrical screen 2, and guides an object to be processed that has dropped through the net body 21 of the cylindrical screen 2 to the lower side. It discharges out of the casing 10 from the opening. The second discharge portion 15 has a funnel-shaped cross section whose width is narrowed from the upper end toward the lower end opening in the cross section perpendicular to the axis, and is provided at the lower end portion of the casing 10 in the inclined direction to form a thin hopper shape. Is formed. The upper end of the second discharge portion 15 faces the opening of the annular frame 22 positioned on the lower side in the inclination direction of the cylindrical screen 2, and does not pass through the net body 21 of the cylindrical screen 2. The object to be processed which has remained inside and dropped from the opening of the annular frame 22 is guided downward and discharged out of the casing 10 through the opening at the lower end.

  The reciprocating nozzle device 4 is disposed outside the cylindrical screen 2 at a position facing the upper end of the body portion of the cylindrical screen 2. The reciprocating nozzle device 4 has a plurality of air nozzles 42 that blow air toward the outer surface of the body portion of the cylindrical screen 2. As shown in the longitudinal cross-sectional view of FIG. 1, the air nozzle 42 has a plurality of header pipes 41 extending parallel to the central axis of the cylindrical screen 2 so as to face the net body 21 of the trunk portion of the cylindrical screen 2. Are arranged. 2, a plurality of header pipes 41 are arranged in a direction parallel to the circumferential direction of the cylindrical screen 2, and a plurality of air nozzles 42, 42,.・ ・ Is provided. These header pipes 41, 41,... And air nozzles 42, 42,... Are arranged between the outside of the cylindrical screen 2 and the inside of the casing 10. FIG. 2 is a cross-sectional view of the cross section of the trommel shifter 1 viewed from the upper side to the lower side in the inclination direction of the cylindrical screen 2, and the casing 10 is not shown in FIG. 2. A plurality of header tubes 41, 41,... Arranged in a direction parallel to the circumferential direction of the cylindrical screen 2 are suspended by support panels 43 connected to both ends of the header tubes 41, 41,. It has been.

The reciprocating nozzle device 4 is configured to reciprocate the plurality of header tubes 41, 41,... And the air nozzles 42, 42,... In the extending direction of the central axis of the cylindrical screen 2. ing. The support panel 43 connected to both ends of the header pipe 41 has a central upper portion protruding upward in an axial view, and the protruding portion protrudes to the outside from a through hole provided in the casing 10. . A support bar 44 is spanned between the protrusions of the support panels 43, 43, and the support bar 44 is slidably supported by a slide bearing 37 installed on the outer surface of the casing 10. . The slide bearing 37 supports the support bar 44 so as to be movable in the axial direction, and a contact surface with the support bar 44 is formed of a polymer material. An air conduit 47 that guides air to be supplied to the header pipes 41, 41,... Is connected to the support panel 43 on one end side that is the upper side in the inclination direction of the casing 10. Pressurized air is supplied to the air conduit 47 by the blower 7 as indicated by an arrow A in FIG. The pressure of the pressurized air by the blower 7 can be set to 10 to 100 kPa, and the flow rate from the air nozzle 42 can be set to 0.2 to 1 m ³ / min. When the object to be processed is municipal waste mixed with raw garbage, preferably, the pressure of the pressurized air of the blower 7 can be set to 50 to 60 kPa, and the flow rate from the air nozzle 42 is 0.5 to 0.8 m ^3. / Min. As the blower 7, a Roots blower is preferably used, but another type of blower may be used. A crank mechanism 45 driven by a motor 46 installed on the outer surface of the casing 10 is connected to the support panel 43 on the other end side which is the lower side in the inclination direction of the casing 10. 45, the support panel 43 is configured to reciprocate in the axial direction with respect to the cylindrical screen 2.

  The air nozzle 42 of the reciprocating nozzle device 4 has an air outlet formed in an elongated shape that is long in a direction parallel to the central axis of the cylindrical screen 2. 3 is a side view of the air nozzle 42, FIG. 4 is a bottom view of the air nozzle 42, and FIG. 5 is a front view of the air nozzle 42. As shown in FIGS. 3 to 5, the air nozzle 42 has a base 42 a formed so that the base end side has a circular cross section and is connected to the header pipe 41, and the cross section has a circular flatness toward the front end. , And a distal end portion 42b which is continuous with the base portion 42a and has an elongated linear air outlet. The air nozzle 42 is manufactured by pressing the distal end portion of a cylindrical tube in a direction opposite to the radial direction to form a circular opening at the distal end portion in an elongated line shape. The air nozzle 42 is attached to the header pipe 41 such that an elongated linear air outlet is parallel to the central axis of the cylindrical screen 2.

  The rotating brush 5 is disposed on the inner side of the cylindrical screen 2 and on the downstream side of the reciprocating nozzle device 4 in the rotational direction of the cylindrical screen 2. In addition, it is preferable to arrange | position the rotating brush 5 so that it may be located in the semicircle of the upper side of the perpendicular direction of the cylindrical screen 2 in a cross section. The rotating brush 5 includes a rotating shaft 51 disposed through the cylindrical screen 2, a cylindrical shaft cover 52 that is fitted around the rotating shaft 51, and a brush planted on the outer peripheral surface of the shaft cover 52. It has bristles 53, and the outer shape of the bristles 53 is formed into a cylindrical shape. The rotating shaft 51 is rotatably supported by bearings 54 and 54 provided on both end surfaces of the casing 10. The other end, which is the lower end of the rotating shaft 51 in the inclination direction, is connected to a motor 56 via a gear box 55. The gear box 55 and the motor 56 are integrally formed geared motors and are installed on the other end surface of the casing 10. The rotating brush 5 is preferably driven to rotate at a speed 1.5 to 2 times that of the cylindrical rotating brush 2. Specifically, the rotating brush 5 is preferably driven at a peripheral speed of 0.75 to 4 m / sec, and particularly preferably 1.2 to 3.4 m / sec when the object to be processed is municipal waste. .

As shown in FIG. 6, the shaft cover 52 of the rotating brush 5 is formed by a plurality of cylindrical shaft cover pieces 521 and 522 arranged in the axial direction. The shaft cover pieces 521 and 522 are formed of end shaft cover pieces 521 used at both ends of the shaft cover 52 and intermediate shaft cover pieces 522 used at an intermediate portion between both ends of the shaft cover 52. Yes. Each of the shaft cover pieces 521 and 522 has brush hairs 53 planted on the outer peripheral surface thereof, and the end shaft cover pieces 521 and the brush hairs 53 form an end brush unit, and the intermediate shaft cover pieces 522 and the brushes are formed. The bristle 53 forms an intermediate brush unit.

  The end shaft cover piece 521 of the end brush unit has one end edge in the axial direction formed in a straight line, while the other end edge in the axial direction formed an uneven shape to form an engaging portion. The end shaft cover piece 521 is formed with a bolt hole penetrating in the radial direction, and a bolt inserted into the bolt hole is screwed into a spiral hole provided in the rotary shaft 51 to thereby end the end shaft cover. The piece 521 is fixed to the rotating shaft 51. In the intermediate shaft cover piece 522 of the intermediate brush unit, both end edges in the axial direction are uneven, and an engaging portion is formed. The end shaft cover piece 521 of one end brush unit and the end shaft cover piece 521 of the other end brush unit are fixed to the rotary shaft 51 with bolts, and the end brush unit between the end brush units at both ends is fixed. A plurality of intermediate brush units are arranged.

  FIG. 7 is a side view showing how the engaging portion of the end shaft cover piece 521 of the end brush unit engages with the engaging portion of the intermediate shaft cover piece 522 of the intermediate brush unit. The end shaft cover piece 521 and the intermediate shaft cover piece 522 are configured such that the convex portion 521a of the end shaft cover piece 521 fits into the concave portion 522b of the intermediate shaft cover piece 522 and the convex portion of the intermediate shaft cover piece 522. When 522a fits into the recess 521b of the end shaft cover piece 521, they are connected to each other in the circumferential direction so as not to move. Thus, the end shaft cover pieces 521 of the end brush units at both ends are fixed to the rotating shaft 51, and the engaging portion of the end shaft cover piece 521 and the engaging portion of the intermediate shaft cover piece 522 are engaged. At the same time, the mutual engaging portions of the intermediate shaft cover pieces 522 of the adjacent intermediate brush units are engaged with each other so that the shaft cover pieces 521 and 522 are connected to each other so as not to be relatively movable in the circumferential direction. Accordingly, all the brush units are fixed so as not to move in the circumferential direction with respect to the rotation shaft 51. The engaging portion of the end shaft cover piece 521 and the intermediate shaft cover piece 522 may be formed by, for example, a zigzag edge other than the uneven edge, and the end shaft cover piece 521 and The shape and mechanism of the engaging portion are not particularly limited as long as the intermediate shaft cover piece 522 and the intermediate shaft cover piece 522 are engaged with each other so that they cannot move relative to each other in the circumferential direction.

  The trommel shifter 1 configured as described above operates as follows. First, the driving device 30 is operated, and the radial load roller 28 on the upper side in the tilt direction of the cylindrical screen 2 is rotationally driven, and the driving force is transmitted to the radial load rail 27 of the annular frame 23 to rotationally drive the cylindrical screen 2. Is done. The cylindrical screen 2 rotates counterclockwise as indicated by an arrow R1 in a cross-sectional view as viewed from the upper side to the lower side in the inclination direction of FIG. Further, the motor 56 is operated, the driving force is transmitted to the rotating shaft 51 through the gear box 55, and the rotating brush 5 is rotationally driven. The rotating brush 5 rotates clockwise as indicated by an arrow R2 in the cross-sectional view of FIG. Further, the motor 46 operates, the support panel 43 is reciprocated by the crank mechanism 45, and the header pipe 41 and the air nozzles 42, 42,... Connected to the support panel 43 are reciprocated. In addition, the blower 7 is activated, pressurized air is supplied to the air nozzle 42 through the air conduit 47 and the header pipe 41, and air is blown out from the air nozzle 42.

  After the operation of each part is started in this way, the object to be processed is carried into the inlet part of the input part 13. The object to be processed carried into the inlet portion of the input portion 13 is input into the annular frame 23 on the upper side in the inclination direction of the cylindrical screen 2 through the duct portion. The workpiece put into the cylindrical screen 2 is lifted upward along the inner surface of the cylindrical screen 2 by the rotating cylindrical screen 2 and detached from the inner surface of the cylindrical screen 2. Then, while the process of dropping is repeated, the inside of the cylindrical screen 2 moves downward in the inclined direction. Among the objects to be processed that move in the cylindrical screen 2, those whose dimensions are smaller than the openings of the mesh body 21 pass through the mesh body 21 and move downward in the casing 10. Discharged. Among the objects to be processed that move in the cylindrical screen 2, those whose dimensions are larger than the mesh openings of the mesh body 21 reach the lower annular frame 22 in the inclination direction of the cylindrical screen 2. It falls from the opening and is discharged from the second discharge portion 15. In this way, the object to be processed is classified into one that is larger and smaller than the mesh opening of the mesh body 21.

  In the case where the object to be processed has a relatively high amount of water, such as a fragment of municipal waste in which raw garbage is mixed, the object to be processed may adhere to the inside of the cylindrical screen 2. Here, according to the trommel shifter 1 of the present embodiment, the workpiece that has adhered to the cylindrical screen 2 and has reached the upper end is blown off by the pressurized air from the air nozzle 42 and detached from the cylindrical screen 2. To do. Further, the object to be processed that has adhered to the cylindrical screen 2 and has reached the contact position with the rotary brush 5 is swept away by the rotating rotary brush 5 and detached from the cylindrical screen 2. In this way, the object to be processed attached to the cylindrical screen 2 can be effectively removed by the rotating brush 5 inside the cylindrical screen 2 and the air blown from the outside of the cylindrical screen 2.

  If a relatively large amount of water remains in the object to be processed detached from the cylindrical screen 2, the object to be processed may reattach to the cylindrical screen 2. However, according to the present embodiment, the object to be processed that has detached from the cylindrical screen 2 is in contact with the air flow blown from the air nozzle 42, so that moisture is reduced and it is difficult to reattach to the cylindrical screen 2. As a result, the amount of the object to be processed attached to the cylindrical screen 2 can be effectively reduced, and clogging of the cylindrical screen 2 can be effectively prevented. As described above, according to the trommel shifter 1 of the present embodiment, in addition to the effect of sweeping the object to be processed by the rotating brush 5, the effect of blowing off the object to be processed by the air from the air nozzle 42 and the effect of reducing the amount of moisture are exhibited. Therefore, clogging of the cylindrical screen 2 can be effectively prevented.

  Further, the trommel shifter 1 of the present embodiment rotates the cylindrical screen 2 counterclockwise as indicated by the arrow R1, while rotating the rotating brush 5 clockwise as indicated by the arrow R2, as shown in the cross-sectional view of FIG. Then, air is blown toward the cylindrical screen 2 from the air nozzle 42 disposed on the upper end side of the cylindrical screen 2. Accordingly, in the region T illustrated in FIG. 2, the object to be processed is swept out by the rotary brush 5 and the air from the air nozzle 42 is effectively brought into contact with the swept object to be processed. The amount can be effectively reduced. That is, the rotary brush 5 is rotationally driven in the direction opposite to the cylindrical screen 2, and the air nozzle 42 that blows air on the cylindrical screen 2 is disposed upstream of the rotary brush 5 in the rotational direction of the cylindrical screen 2. To do. Thus, after the air from the air nozzle 42 is blown onto the object to be processed adhered to the cylindrical screen 2, the object to be processed is swept out by the rotary brush 5, and the air from the air nozzle 42 is applied to the swept object to be cleaned. Can be sprayed again. Therefore, it is possible to effectively reduce the water content of the object to be processed and prevent reattachment to the cylindrical screen 2.

  In another embodiment, the rotary brush 5 is rotationally driven in the same direction as the cylindrical screen 2, and the air nozzle 42 that blows air on the cylindrical screen 2 is rotated in the rotational direction of the cylindrical screen 2 rather than the rotary brush 5. You may arrange | position in the downstream of. Thereby, the to-be-processed object adhering to the cylindrical screen 2 is swept out with the rotary brush 5, and the air from the air nozzle 42 is sprayed on the swept-out to-be-processed object, and the moisture content of a to-be-processed object can be reduced. .

  The rotating brush 5 and the cylindrical screen 2 preferably have a relative peripheral speed of 0.5 to 5 m / sec in any case where they are driven in the opposite direction and the same direction. In the case where the object to be treated is municipal waste, it is particularly preferably 1.5 to 3 m / sec.

Moreover, in the said embodiment, although the cylindrical rotating brush 5 rotated around a central axis was used as a brush, the shape of the rotating brush 5 may be other shapes, such as a star-shaped cross section. Further, on the outer peripheral side of the rotary shaft 51, it may be those bristles 53 planted screw spiral. Further, the brush need not be driven to rotate. When the brush is not driven to rotate, a fixed brush is used in which brush hairs extending toward the inner surface of the cylindrical screen 2 are planted on a plate-like support member disposed facing the inner surface of the cylindrical screen 2. be able to.

  Further, an air nozzle as an auxiliary air spraying portion may be arranged at a contact portion where the cylindrical screen 2 and the rotating brush 5 or the fixed brush contact, and air may be blown to the contact portion between the cylindrical screen 2 and the brush. . Thereby, the to-be-processed object adhering to the cylindrical screen 2 can be effectively swept out. You may arrange | position the air nozzle as said auxiliary | assistant air spray part in any of the inner side of the cylindrical screen 2, and an outer side. When an air nozzle is disposed inside the cylindrical screen 2, pressurized air is circulated through the rotating shaft 51 of the rotating brush 5, an air blowing hole penetrating the rotating shaft 51 and the shaft cover 52 is provided, and this air blowing Air can be blown out from the hole toward the radially outer side of the rotating brush 5.

  Moreover, in the said embodiment, although the reciprocating nozzle apparatus 4 reciprocated simultaneously the several header pipe | tube 41 arranged in the circumferential direction of the cylindrical screen 2 in the same direction, the several header pipe | tube 41 is an adjacent header pipe | tube. 41 may be reciprocated in opposite directions. As a reversal drive device that reciprocally drives adjacent header pipes 41 in opposite directions, two crank mechanisms having a phase of 180 ° are connected to the output shaft of the motor, and each crank mechanism is connected to the plurality of header pipes 41. Any one connected to every other can be used. Further, the plurality of header tubes 41 may be fixed to the casing 10 without reciprocating driving. When fixing the plurality of header pipes 41 to the casing 10, the air nozzles 42, 42,... Provided on the plurality of header pipes 41 are installed between adjacent header pipes 41 in the extending direction of the header pipe 41. It is preferable to install them in a staggered pattern.

  Further, in the above embodiment, a plurality of header pipes 41 provided with a plurality of air nozzles 42 are installed in the circumferential direction of the cylindrical screen 2, but the number of header pipes 41 may be one.

  Moreover, in the said embodiment, although the air nozzle 42 installed in the header pipe | tube 41 as an air spraying part was provided, the air spraying part is comprised by the blowing hole which cuts off the header pipe | tube 41 and blows out pressurized air. Also good.

  In the above embodiment, the reciprocating nozzle device 4 reciprocally drives the header pipe 41 and the air nozzle 42 using the motor 46 and the crank mechanism 45. However, the reciprocating drive is performed by various driving devices such as a hydraulic cylinder and a linear actuator. You may do.

DESCRIPTION OF SYMBOLS 1 Trommel shifter 2 Cylindrical screen 4 Reciprocating nozzle apparatus 5 Rotating brush 7 Blower 10 Casing 11 Support frame 12 Leg part 13 Input part 14 1st discharge part 15 2nd discharge part 21 Net body 22,23 of a cylindrical screen Cylindrical screen Annular frame 27 Diameter load rail 28 of cylindrical screen Diameter load roller 26 Axis load rail 29 of cylindrical screen Axis load roller 30 Drive device 41 Header tube 42 of reciprocating nozzle device Air nozzle 43 of reciprocating nozzle device Support of reciprocating nozzle device Panel 44 Reciprocating nozzle device support rod 45 Reciprocating nozzle device crank mechanism 46 Reciprocating nozzle device motor 51 Rotating brush shaft 52 Rotating brush shaft cover 53 Rotating brush bristles 55 Rotating brush gear box 56 Rotating brush motor

Claims (12)

A cylindrical sieve main body having a through hole in the body portion and arranged with the central axis inclined with respect to the horizontal plane;
A driving device for rotationally driving the sieve body around a central axis;
A casing for housing the sieve body,
An input unit for supplying an object to be processed into the sieve body;
A first discharge part for discharging the workpiece that has passed through the through hole of the sieve body from the casing;
A second discharge part for discharging the object to be processed remaining in the sieve body from the casing through the end face of the sieve body;
A brush disposed inside the sieve body and in contact with the inner surface of the body of the sieve body;
Disposed outside side of the sieve body, and an air blowing portion for blowing air toward the outer surface of the body portion of the sieve body,
The rotary sieving machine is characterized in that the air blowing unit is reciprocated in a direction parallel to the central axis of the sieve body . The rotary sieve according to claim 1,
The rotary sieve is characterized in that the brush is formed in a cylindrical shape, a central axis is arranged in parallel with the central axis of the sieve body, and is rotated around the central axis. The rotary sieve according to claim 2,
The brush has a rotating shaft into which a rotational force is introduced, and a plurality of brush units attached to the rotating shaft and connected in the extending direction of the rotating shaft. In the rotary sieve according to claim 3,
The brush unit has a shaft cover piece that is externally fitted to the rotating shaft, is engaged with each other and cannot be moved relative to the circumferential direction, and brush hairs planted on the outer peripheral surface of the shaft cover piece. Rotating sieve machine characterized by. The rotary sieve according to claim 2,
The rotary sieve machine characterized in that the object to be processed swept out by the brush is formed so as to come into contact with the air from the air blowing unit. The rotary sieve according to claim 1,
The rotary sieving machine, wherein the air blowing part has an elongated air outlet extending in a direction parallel to the central axis of the sieve body. The rotary sieve according to claim 1,
A plurality of the air blowing parts are arranged in a direction parallel to the central axis of the sieve body. The rotary sieve according to claim 1,
The air blowing unit, rotary sifter, characterized by being a plurality arranged in parallel toward direction and the circumferential direction of the sieve body. The rotary sieve according to claim 1,
A rotary sieving machine comprising an auxiliary air blowing part for blowing air to a contact part between the brush and the sieve body. The rotary sieve according to claim 7 ,
Reversal drive for reciprocally driving a plurality of air outlets adjacent in a direction parallel to the circumferential direction of the sieve body in directions opposite to each other between the adjacent air outlets in a direction parallel to the axial direction of the sieve body A rotary sieve having a device. A cylindrical sieve main body having a through hole in the body portion and arranged with the central axis inclined with respect to the horizontal plane;
A driving device for rotationally driving the sieve body around a central axis;
A casing for housing the sieve body,
An input unit for supplying an object to be processed into the sieve body;
A first discharge part for discharging the workpiece that has passed through the through hole of the sieve body from the casing;
A second discharge part for discharging the object to be processed remaining in the sieve body from the casing through the end face of the sieve body;
A brush disposed inside the sieve body and in contact with the inner surface of the body of the sieve body;
An air blowing part that is arranged outside the sieve body and blows air toward the outer surface of the body part of the sieve body;
With
A rotary sieving machine comprising an auxiliary air blowing part for blowing air to a contact part between the brush and the sieve body. A cylindrical sieve main body having a through hole in the body portion and arranged with the central axis inclined with respect to the horizontal plane;
A driving device for rotationally driving the sieve body around a central axis;
A casing for housing the sieve body,
An input unit for supplying an object to be processed into the sieve body;
A first discharge part for discharging the workpiece that has passed through the through hole of the sieve body from the casing;
A second discharge part for discharging the object to be processed remaining in the sieve body from the casing through the end face of the sieve body;
A brush disposed inside the sieve body and in contact with the inner surface of the body of the sieve body;
An air blowing part that is arranged outside the sieve body and blows air toward the outer surface of the body part of the sieve body;
With
A plurality of the air blowing parts are arranged in a direction parallel to the central axis of the sieve body,
Reversal drive for reciprocally driving a plurality of air outlets adjacent in a direction parallel to the circumferential direction of the sieve body in directions opposite to each other between the adjacent air outlets in a direction parallel to the axial direction of the sieve body A rotary sieve having a device.

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