JP2005177689A - Rotary drum structure of rotary treatment machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotary drum structure of a rotary treatment machine which is capable of mixing a material to be treated with effective agitation. <P>SOLUTION: The rotary drum structure of the rotary treatment machine has a polygonal cross section rotatively symmetrical with the round of the central axis and is provided with the hollow tubular drum itself 3A to rotate the central axis towards the one direction by reclining the central axis to approximately horizontal direction and a plurality of agitation plates 3B protruded vertically to the inside of the drum itself from the planar part constituting each arm of the polygon of the inner wall of the drum itself. Each agitation plate is installed near to the front of the rotary direction of the drum itself from the center of each arm. Therefore, the cross section becomes horizontal at the transferred position to the upper level than the central axis when the rotary drum is rotated and the material to be treated is scraped up and is allowed to fall. Thus, it is possible that the material to be treated is effectively agitated to enhance the fermentation, the decomposition and the chemical reaction and can be treated in a short time. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a rotary processing machine for processing an object to be processed in a horizontal rotating drum, for example, a rotating drum used for a rotary fermenter for fermenting while processing an object to be processed such as garbage by rotating the rotating drum. Related to the structure.

  Conventionally, in order to decompose household waste, household waste such as seafood and vegetable waste discharged from restaurants and food factories, or waste such as chicken manure discharged from poultry farms, A waste treatment apparatus has been developed that ferments and decomposes these wastes together with a decomposition treatment agent containing microorganisms such as bacteria into a rotating drum and rotates and rotates the rotating drum.

For example, in the household waste disposal apparatus described in Patent Document 1, baffle plates are protruded radially inward from each vertex position of a rotary drum having a polygonal cross section, and the rotation drum is rotated by these baffle plates. The household waste housed in the rotating drum is agitated.
JP 2003-80205 A

  However, in the prior art as described in Patent Document 1 described above, each apex position of the rotary drum having a polygonal cross section is a baffle plate that stirs an object to be processed such as domestic waste provided in the rotary drum. Since the workpiece that has been scraped up by the baffle plate rises beyond the height of the rotation center of the rotating drum, the tip of the workpiece is directed downward. Therefore, there has been a problem that the workpiece to be scraped up immediately slides down and a sufficient stirring / mixing effect cannot be obtained.

  Therefore, an object of the present invention is to solve the problems of the prior art as described above, and to provide a rotating drum structure of a rotary processing machine capable of efficiently stirring and mixing an object to be processed.

  In order to achieve the above object, in the rotary drum structure of the rotary processing machine of the present invention, a hollow cylindrical drum body having a polygonal cross section that is rotationally symmetric about a central axis, and the multiple inner wall surfaces of the drum body. A plurality of stirrer plates vertically projecting from the flat part constituting each side of the square toward the inside of the drum body, each stirrer plate from the center of each side in the cross section of the drum body It is biased forward in the direction of rotating the drum body.

  In the rotary drum structure of the rotary processing machine of the present invention, the drum body is formed so that the stirring plate is elongated in the longitudinal direction of the drum body, and its start end precedes the direction of rotating the drum body from the end side. It is desirable to be inclined in the longitudinal direction with respect to the central axis line.

  According to the rotating drum structure of the rotary processing machine according to claim 1, when the rotating drum rotates in the horizontal direction, the cross section thereof becomes horizontal in a position where the stirring plate has moved to a position higher than its central axis. Therefore, the processing object in the rotary drum can be scraped up and dropped, and the stirring effect can be enhanced. As a result, the processing object such as garbage is decomposed into microorganisms such as bacteria. Moreover, since it can be effectively mixed with air, fermentation and decomposition of the object to be processed are promoted, and the object to be processed can be processed in a short time.

  Further, according to the rotating drum structure of the rotary processing machine according to claim 2, since the processing object can be gradually moved in the longitudinal direction while stirring the processing object, While being continuously put into the rotating drum from one end of the rotating drum, the processed object can be taken out from the other end, and a large amount of objects to be processed can be processed continuously and efficiently. Can do.

  FIG. 1 is a perspective view showing the entire structure of a rotary fermenter showing an embodiment of the rotary drum structure of the present invention, and FIG. 2 is a plan view thereof. As shown in these drawings, the rotary fermenter is shown in FIG. Reference numeral 1 has a cylindrical casing 2 in which two rotating drums 3 that are rotationally driven in one direction around a horizontal axis are incorporated.

  In this rotary fermenter 1, raw garbage as an object to be treated is put into a front rotary drum 3 together with a decomposition treatment agent containing microorganisms and stirred in the two rotary drums 3 to ferment / It is intended to produce granular or powdered fertilizer by decomposing. Here, in FIG. 1, the left side is described as the front side of the rotary fermenter 1, and the right side is described as the rear side.

  The rotary fermenter 1 is provided with a hopper 4 for approaching the front end portion in the longitudinal direction of the cylindrical casing 2 to put garbage. The upper end of the hopper 4 is released, and a screw conveyor 5 for supplying the garbage put into the hopper 4 into the rotary drum 3 is attached along the inside of the inclined wall on the cylindrical casing 2 side. It has been.

  The screw conveyor 5 incorporates a conveying screw 5B that is rotationally driven by a motor 5A. By the rotation of the conveying screw 5B, the garbage, which is the object M to be processed, put into the hopper 4 is sent upward. Thus, the cylindrical casing 2 is introduced into the rotary drum 3 via the opening 2A on the front end face and the opening H formed near the front end face center of the front rotary drum 3 facing the opening 2A. ing.

  FIG. 3 is a cross-sectional view of the rotary fermenter 1, and as shown in this figure, the rotary drum 3 includes a hollow cylindrical drum body 3A having a regular hexagonal cross section that is rotationally symmetric about the central axis, It has a stirring plate 3B projecting vertically from the flat portion constituting each side of the regular hexagon of the inner wall surface toward the inside of the drum body.

  The agitating plate 3B has a horizontal cross section oriented horizontally toward the inner side in the radial direction of the drum body 3A in a state where the drum body 3A is rotated around the central axis in the direction of the arrow in FIG. In the cross section of the drum main body 3A, the drum main body 3A is provided to be deviated forward from the center of each side in the direction in which the drum main body 3A is rotated.

  As shown in FIG. 1, on the outer periphery in the vicinity of both end portions of each drum body 3A accommodated in a cylindrical casing 2 in the longitudinal direction, two support rings 3C are arranged as shown in FIG. Is attached concentrically to the drum body 3A with respect to the rotation center O by the rib 3D.

  These support rings 3 </ b> C are placed and held on drive support rollers 7 and 8 that are rotatably attached to the base frame 6 at two locations on the lower part of the outer peripheral surface. The base frame 6 is installed on the floor surface F and fixedly supports the cylindrical casing 2.

  These drive support rollers 7 and 8 are configured so as to rotate in synchronization with each other via a chain transmission mechanism 9, and one side is driven by a rotary drum motor 10 provided on the base frame 6 shown in FIG. 1. When the drive shaft 11 to which the drive support roller 7 is attached is driven to rotate, the drive support roller 7 fixed to the drive shaft 7 rotates, and the drive support roller 8 on the opposite side also rotates in conjunction with the same direction. The entire rotating drum 3 rotates in the direction indicated by the arrow in FIG. 3 via the ring 3C.

  As shown in FIG. 1, in the rotary drum 3 on the rear side of the rotary fermenter 1, discharge drum hatches 12 are provided at two positions on the rear end surface of the drum main body 3A so as to be freely opened and closed.

  These discharge drum hatches 12 can be opened and closed manually by opening the openable discharge hatch 13 (see FIGS. 1 and 4) provided on the end face of the cylindrical casing 2 facing them. It has become.

  When the rotating drum 3 is rotated with the discharge drum hatch 12 opened, the workpiece M processed in the drum main body 3A passes through the discharge port 14 formed below the cylindrical casing from the floor F. It is dropped on the belt conveyor 15 arranged at the position, and is conveyed to a desired place by the belt conveyor 15.

  Further, the rotary drum 3 on the rear side is provided with a circular opening h that penetrates the suction pipe 16 fixed to the cylindrical casing 2 side at the center portion of the rear end surface of the drum body 3A. The suction pipe 16 is for sucking the air in the drum body 3 </ b> A by the suction blower 17, and the suction pipe 16 is connected to the suction side of the suction blower 17 through the cooling / dehumidifying passage 18.

  The exhaust side of the suction blower 17 communicates with the air intake port of the burner 20 via a pipe 19 as shown in FIG. In the burner 20, fuel is mixed into the air introduced from the pipe 19 and burned, and the high-temperature combustion gas generated here is sent to the heat exchanger 21.

  FIG. 5 is a configuration diagram of a heating system for heating the workpiece M in the rotary drum 3 with heated air. As shown in the figure, outside air is introduced into the heat exchanger 21 by an air supply blower 22. The gas is fed and heated by exchanging heat with the combustion gas discharged from the burner 20 and then introduced into the rotary drum 3.

  The combustion gas that has passed through the heat exchanger 21 passes through a gap between the cylindrical casing 2 and the rotating drum 3 and warms the rotating drum 3 from the outside, and then passes through a deodorizing tank 23 that contains activated carbon to generate odor. After being removed, it is released into the atmosphere.

Here, operation | movement of the rotary fermenter 1 comprised as mentioned above is demonstrated.
In FIG. 1, when the rotary fermenter 1 is operated, an object to be treated M (here, garbage) charged into the hopper 4 together with a decomposition treatment agent containing microorganisms is transferred to the drum body 3 </ b> A of the rotary drum 3 by the screw conveyor 5. It is sent inside.

  At this time, the front and rear rotary drums 3 connected to each other are integrally rotated by the rotary drum motor 10, and the workpiece M put into the rotary drum 3 on the front side from the screw conveyor 5 is the drum body 3 </ b> A. It is scooped up by the stirring plate 3B that rotates together.

  As shown in FIG. 3, the stirring plate 3 </ b> B is horizontally oriented in the cross-sectional direction at a position moved to a position higher than the central axis when the rotating drum 3 rotates, and thus the workpiece M in the rotating drum 3. Scoop up to a high position above and drop.

  In this way, as the rotating drum 3 rotates, the six stirring plates 3B successively scrape the processing object M and repeat the operation of dropping it from the high place, so that the processing object M is agitated. It is sufficiently mixed with the heated air sent through the heat exchanger 21 and is fermented and decomposed in a short time and moisture is removed by the action of microorganisms in the decomposition treatment agent.

  In the present embodiment, the heated air is fed into the drum body 3A through the nozzle N from the opening H to the front end surface of the drum body 3A of the front rotary drum 3, and the connecting portion between the adjacent front and rear rotary drums 3 It is structured to be sent from.

  6 is a perspective view including a partially cutaway cross section showing the structure of the connecting portion between the two front and rear rotating drums 3, and FIG. 7 is a partial cross sectional view showing the structure of the connecting portion between these rotating drums 3. As shown in these drawings, the outer peripheral surface of the rear end portion of the front drum body 3A is inclined inward and partially penetrates the inner side of the front end portion of the rear drum body 3A. In addition, on each side of the regular hexagon formed at the rear end edge of the front drum body 3A, an open / close flap 24 formed elongated along the respective side is swingably attached by a connecting shaft 25.

  As shown in FIG. 7, each of the six open / close flaps 24 swings between a support bracket 26 attached to a plurality of locations on the inner wall surface near the front end of the rear drum body 3A and the inner wall surface. In the position where the front end of the opening / closing flap 24 is in contact with the inner wall surface, a gap S formed between the outer peripheral surface of the front drum body 3A and the inner peripheral surface of the rear drum body 3A is formed. It is blocking.

On the other hand, in a state where the front end of the opening / closing flap 24 is held in contact with the support bracket 26, air can flow between the inside and outside of the rotary drum 3 through the gap S.
These opening / closing flaps 24 are automatically opened and closed by their own weights so as to close the gap S when moved downward with the rotation of the rotary drum 3 and open the gap S when moved upward. .

  Due to the structure of the connecting portion between the two adjacent front and rear rotating drums 3 as described above, when the rotating drum 3 is heated by the heated air, the connecting portion absorbs these longitudinal dimensional changes due to thermal expansion. While being able to do, it can prevent that the to-be-processed object M inside leaks outside from a connection part.

  Further, an outer air blowing guide 27 that expands in a conical shape toward the front is provided at the front end edge of the rear drum body 3A, and the outer surface near the rear end of the front drum body 3A An inner air blowing guide 28 is provided that expands in a conical shape toward the front so as to be positioned substantially concentrically inside the air blowing guide 27.

  An annular gap S ′ formed between the outer blowing guide 27 and the inner blowing guide 28 communicates with the gap S, and these gaps S and S ′ are fixedly supported on the base frame 6 side. It faces a number of nozzle holes 30 formed on the peripheral surface of the annular duct 29.

  The annular duct 29 communicates with the heat exchanger 21 shown in FIG. 5, and the air blown into the heat exchanger 21 from the outside by the blower blower 22 and heated here is ejected from these nozzle holes 30. It passes through the gaps S and S ′ and is introduced into the drum 3A from a position where the opening / closing flap 24 is open.

  Further, in the present embodiment, each stirring plate 3B is formed to be elongated in the longitudinal direction of the drum body 3A, and the start end (front side) precedes the rotation direction of the drum body 3A from the end side (rear side). In this way, it is attached in a positional relationship twisted with respect to the central axis.

  That is, when the stirring plate 3B has its starting end side (front end side) scooped up the workpiece M and its cross section is substantially horizontal, the end side (rear end side) is not yet horizontal. In addition, since the workpiece M placed on the stirring plate 3B starts to fall from the start end side with the rotation of the drum body 3A because the tilt is slightly inclined toward the end side, the drop start position is on the end side. Gradually move toward. By such an operation, as the rotary drum 3 rotates, the workpiece M in the drum main body 3A is gradually sent toward the terminal side.

  With such a structure, the movement of the workpiece M in the rotary drum 3 is performed very slowly with respect to the rotation of the rotary drum 3, so that a spiral blade or the like is provided on the inner peripheral surface of the drum body 3A. The number of rotations of the rotary drum 3 per unit movement amount of the object to be processed M can be increased as compared with the case where the object to be processed M is moved by the rotation of 3. As a result, the workpiece M can be sufficiently stirred and mixed while the workpiece M moves from the front end side to the rear end side of the two continuous rotary drums 3.

  On the other hand, the heated air introduced into the rotary drum 3 heats and drys the workpiece M, and then is a suction pipe inserted into the end side of the drum body 3A on the downstream side in the moving direction of the workpiece M. 16 is sucked by the suction blower 17 and passes through the cooling and dehumidifying passage 18 where it is cooled and the contained moisture is removed.

  As shown in FIG. 5, this air is mixed with fuel by a burner 20 to become combustion gas. At this time, the substance generating the odor generated from the workpiece M is almost decomposed by combustion. As described above, the combustion gas heats the outside air sent into the rotary drum 3 by the heat exchanger 21 and then passes between the rotary drum 3 and the cylindrical casing 2 and is discharged from the deodorizing tank 23 to the atmosphere. Is done. The air taken out from the drum main body 3 </ b> A through the suction pipe 16 is almost completely deodorized by combustion in the burner 20, but is more completely deodorized by the deodorizing tank 23.

  As the workpiece M moves while being stirred in the drum main body 3A as the rotary drum 3 rotates, it gradually ferments and decomposes to change into a granular or powdery fertilizer with high density. Then, when the inside of the rear rotating drum 3 has moved to its end portion, the rotation of the rotating drum 3 is temporarily stopped, and the discharge hatch 13 provided at the rear end portion of the cylindrical casing 2 is opened. The discharge drum hatch 12 provided near the outer periphery of the rear end surface of the rear drum body 3 is opened.

  In this way, when the rotary drum 3 is driven to rotate again in a state where the discharge drum hatch 12 is opened, the processed material M that has been processed and becomes fertilizer is gradually discharged from the discharge drum hatch 12 to the outside of the drum body 2. Then, it falls onto the belt conveyor 15 from the opening formed in the lower surface of the rear end of the cylindrical casing 2, and is conveyed to a desired place by the belt conveyor 15.

  In addition, when there is enough time for the workpiece M to move from the front end to the rear end in the two rotary drums 3, the discharge drum hatch 12 is opened from the start of the operation of the rotary fermenter 1. By doing so, the workpiece M can be processed continuously.

  Moreover, in the thing of embodiment mentioned above, although the rotating drum 3 is used, connecting two front and back in series, when processing a lot of to-be-processed objects M continuously, between two front and back One or more rotating drums 3 ′ shown in FIG. 8 may be connected in series. The front end of the rotary drum 3 ′ has the same structure as the front end of the rear rotary drum 3 in FIG. 1, and the rear end has the same structure as the rear end of the front rotary drum 3. It has become.

  In the case where one or more rotary drums 3 ′ are arranged between the front and rear rotary drums 3, the annular duct 29 described above is arranged for each connecting portion between the rotary drums, and the drums are started therefrom. Heated air is introduced into the main body 3A.

  Further, driving support rollers 7 and 8 shown in FIG. 3 are arranged at portions facing the respective support rings 3C provided on the rotary drum 3 ′, and the rotary drum 3 ′ is arranged on the front and rear rotary drums 3 ′. And a structure that can be driven to rotate synchronously.

  In the above-described embodiment, the rotating drum 3 or the drum body 3A of the rotating drum 3 ′ has a hollow cylindrical shape having a regular hexagonal cross section that is rotationally symmetric about the central axis. The shape may be other rotationally symmetric polygonal cross-sections, for example, cross-sectional shapes such as regular tetragons and regular octagons.

  The rotating drum structure of the rotary processing machine of the present invention can be particularly suitably used for a rotary fermenter that manufactures fertilizer by stirring and fermenting an object to be processed in the rotary drum. Further, the present invention can also be used for a rotary processing machine that stirs and mixes a workpiece with a similar structure or causes a chemical reaction to the workpiece while stirring.

It is a side view including a partially cutaway section of a rotary fermenter having a rotary drum structure of the present invention. It is a top view of the rotary fermenter which has the rotating drum structure of this invention. It is a cross-sectional view of the rotary fermenter having the rotary drum structure of the present invention. It is a rear view of the rotary fermenter which has the rotating drum structure of this invention. It is a heating system block diagram of the rotary fermenter which has the rotating drum structure of this invention. It is a perspective view containing the partially notched cross section which shows the structure of the connection part between rotary drums. It is a fragmentary sectional view which shows the structure of the connection part between rotary drums. It is a perspective view which shows the rotating drum structure in other embodiment of this invention.

Explanation of symbols

1 Rotary fermenter (rotary processing machine)
DESCRIPTION OF SYMBOLS 2 Cylindrical casing 2A Opening part 3 Rotating drum 3A Drum main body 3B Stirring plate 3C Support ring 3D Rib 3 Opening part 4 Hopper 5 Screw conveyor 5A Motor 5B Conveying screw 6 Base frame 7, 8 Drive support roller 9 Chain transmission mechanism 10 Rotating drum Motor 11 Drive shaft 12 Discharge drum hatch 13 Discharge hatch 14 Discharge port 15 Belt conveyor 16 Suction pipe 17 Suction blower 18 Cooling dehumidification passage 19 Pipe 20 Burner 21 Heat exchanger 22 Air supply blower 23 Deodorizing tank 24 Opening / closing flap 25 Connecting shaft 26 Support Bracket 27 Outer air guide 28 Inner air guide 29 Annular duct 30 Nozzle hole

Claims (2)

A hollow cylindrical drum body having a polygonal cross section rotationally symmetric about a central axis;
A plurality of stirring plates projecting vertically from the flat portion constituting each side of the polygon of the inner wall surface of the drum body toward the inside of the drum body;
Each of the stirring plates is provided in the transverse section of the drum body so as to be biased forward from the center of each side in the direction in which the drum body is rotated.   The stirring plate is formed in an elongated shape in the longitudinal direction of the drum body, and is provided so as to be inclined in the longitudinal direction with respect to the central axis of the drum body so that the start end side precedes the end side in the direction in which the drum body is rotated. The rotary drum structure of the rotary processor according to claim 1.

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