JP4966990B2 - Trommel waste sorting device, waste treatment facility, and waste sorting method - Google Patents

Description

  The present invention relates to a trommel waste sorting device, a waste treatment facility equipped with the trommel waste sorting device, and a waste separation method using the trommel waste sorting device. The present invention relates to a trommel-type waste sorting apparatus, a waste treatment facility, and a waste sorting method that are used to sort out organic matter from waste containing organic matter that can be treated.

Conventionally, a trommel type waste sorting apparatus has been used for the purpose of sorting and collecting useful materials from crushed waste from which waste such as household waste and industrial waste is crushed.
In this trommel type waste sorting device, a rotating drum having a through-hole in a cylindrical side wall is horizontally provided in a state of being horizontal, downwardly inclined, or upwardly inclined, and this rotating drum is rotated. As a result, the crushing waste stored inside is moved from one end side of the rotating drum to the other end side and discharged, and part of the crushing waste passes through the through-hole during the movement. It is configured to be discharged out of the rotating drum.
That is, in the trommel type waste sorting device, fine and high specific gravity of the crushed waste passes through the through-hole and is discharged out of the rotary drum, and the low specific gravity and high bulk passes through the rotary drum as it is. Are separated by being discharged.

In recent years, organic materials such as raw garbage discharged from households and food waste discharged from food factories have been collected and studied for effective use in biological treatment such as methane fermentation and composting. Such organic substances generally have a high water content and are easily crushed, so that they easily pass through the through-holes of the rotating drum. A trommel waste sorting apparatus is used as a means for sorting the organic substances.
However, in general, waste is often stored and discarded in a plastic bag or the like, and the crushed waste is mixed with sheet-like waste plastics and the like generated by breaking the plastic bag.

On the other hand, Patent Document 1 describes that a sheet-like object is promoted by forming an air flow in the direction of the center (rotation axis) of the rotary drum using a blower.
In Patent Document 1, a nozzle is provided on the bottom surface of the chamber in the latter half of the rotating drum, and air is blown from the outside of the rotating drum toward the center of the rotating drum, whereby a lightweight object is floated and separated.
The invention according to Patent Document 1 is an invention whose main purpose is the separation of coarse trash. Therefore, in the case of the purpose of sorting organic substances such as raw trash, the unidirectional movement in the first half of the rotating drum is thus performed. The method of forming an air flow and forming the air flow from the outside to the inside through the through hole in the second half is difficult to efficiently separate the sheet-like material from the organic material that can be used effectively, and expects an improvement in the recovery efficiency of the organic material Is difficult.

JP-A-10-94757

  An object of the present invention is to improve the separation performance of organic matter such as garbage, and to improve the recovery efficiency of organic matter that can be biologically processed.

  The present invention relating to a trommel type waste sorting apparatus for solving the above-mentioned problems is used for separating crushed waste containing biologically treatable organic matter, and is provided with a through hole in a cylindrical side wall and rotated around an axis. Rotating drums that can be formed are provided horizontally, and the crushing waste is rotated from the one end side of the rotating drum by rotating the rotating drum in a state where the crushing waste is housed inside. The crushing waste containing the organic substance that is moved to the other end side, passes through the through-hole and is discharged to the outside of the rotating drum, and the other end side moves to the other end side within the rotating drum. A trommel-type waste sorting device which is configured to be separated into crushed waste discharged from the air and further includes a blower for generating an air flow in the rotary drum, Tube The tube body has one end portion positioned on one end portion side of the rotating drum and the other end portion positioned in an intermediate portion from one end portion to the other end portion of the rotating drum. A rotating drum is provided so that the gas flowing in from one end can be discharged from the other end, and the tube is bent by discharging the gas from the other end. Thus, a flexible tube is used so that the gas discharge direction can be changed at random.

  In addition, the present invention relating to a waste treatment facility for solving the above problems is used for separating crushed waste containing organic matter that can be biologically treated, and has a through-hole in a cylindrical side wall and rotates around an axis. Rotating drums that can be formed are provided horizontally, and the crushing waste is rotated from the one end side of the rotating drum by rotating the rotating drum in a state where the crushing waste is housed inside. The crushing waste containing the organic substance that is moved to the other end side, passes through the through-hole and is discharged to the outside of the rotating drum, and the other end side moves to the other end side within the rotating drum. A waste treatment facility having a trommel-type waste sorting device, which is configured to be separated into crushed waste discharged from the air and further includes a blower for generating an airflow in the rotating drum. The Tromme The type waste sorting apparatus includes a tube in the rotating drum, and the tube has one end positioned on one end of the rotating drum and the other end on one end of the rotating drum. It is located in the middle part from the other end part, and is provided in the rotating drum so that the gas introduced from the one end part by the blower can be discharged from the other end part side, Is characterized in that a flexible tube is used so that bending can be caused by discharging gas from the other end side and the discharging direction of the gas can be changed randomly.

  Furthermore, according to the present invention relating to the waste separation method for solving the above-mentioned problem, a through hole is provided in a cylindrical side wall of a crushed waste obtained by crushing a waste containing a biologically treatable organic matter. A trommel type waste sorting apparatus, further comprising a rotating drum horizontally arranged around a shaft and further provided with an air blower for generating an air flow in the rotating drum. The crushing waste is moved from one end side to the other end side of the rotating drum by introducing into the rotating drum and rotating the rotating drum, and the air flow is generated in the rotating drum by the blower. Crushed waste containing organic matter that passes through the through-hole and is discharged to the outside of the rotating drum, and crushed waste that moves to the other end side of the rotating drum and is discharged from the other end side Sorting A waste separation method to be performed, wherein the trommel-type waste sorting apparatus includes a tubular body in the rotating drum, and the tubular body has one end portion on one end side of the rotating drum. The other end is positioned at an intermediate portion from one end of the rotating drum to the other end, and the gas introduced from the one end by the blower can be discharged from the other end. In addition, a flexible pipe is used in the pipe body so that bending can be caused by discharging gas from the other end side and the discharge direction of the gas can be changed randomly. The separation is carried out while stirring the crushed waste in the rotating drum by the gas wind force whose discharge direction is changed randomly.

Explaining the trommel type waste sorting device, the crushed waste contained in the rotating drum moves from the stable state at the bottom of the rotating drum to the side following the movement of the side wall accompanying the rotation of the rotating drum. It will be in a slightly lifted state, and after that, it will not be able to follow the movement of the side wall and will collapse to the opposite side to the rotation direction (bottom side of the rotating drum).
At this time, when the crushed waste collapses on the side wall having the through-hole opened, a part of the crushed waste passes through the through-hole and the remaining crushed waste is slightly advanced.
And this is repeated and it is comprised so that it may be divided into the crushing waste which passes a through-hole, and the crushing waste advanced to the other end part side.
If the sheet-like material is mixed here, the through-holes are blocked and the organic matter is prevented from being discharged to the outside through the through-holes. It is effective for improving the recovery efficiency.

  When the crushed waste contains sheet-like waste (for example, sheet-like waste plastics, rubber sheets, cloth) and organic matter that can be biologically treated, for example, sheet-like waste plastics are usually It is located in a relatively upper part of the crushed waste and is not easily exposed to the wind blown through the through-hole as in the invention described in Patent Document 1, and in many cases, other crushed waste It is in a state where a part is sandwiched and is restrained to some extent.

In addition, when wind flows from the outside of the rotating drum through the through hole, the waste that closes the through hole moves, and when the through hole opens, the crushed waste moves with the wind pressure due to the airflow. Becomes harder to expect.
Furthermore, if a gap is originally formed between the crushed waste and the wind from the outside of the rotating drum flows into the rotating drum through the gap, it hardly contributes to the movement of the crushed waste. Result.

Here, in the present invention, a tubular body is provided in the rotating drum, and gas is discharged from the end of the tubular body positioned at an intermediate portion from one end to the other end of the rotating drum. Since the pipe is bent by the discharge of the gas and the gas discharge direction is changed randomly, the gas is randomly blown from the pipe to the crushed waste at the bottom of the rotating drum. A thing is agitated and a bulky thing such as a sheet-like thing is lifted by an air current.
In addition, since the crushed waste is agitated by blowing gas directly from the tube body to the crushed waste, the wind force soars the sheet-like material compared to the case of Patent Document 1 in which air is blown from the outside of the rotating drum. Can be used effectively.

  In other words, sheet-like waste plastics and the like are efficiently lifted in the rotating drum, and separation from organic matter such as garbage is promoted, so that the recovery efficiency of organic matter that can be biologically processed can be improved.

The block diagram which shows the apparatus structure of the waste disposal facility concerning this embodiment. The front view which shows the structure of the trommel type waste sorting device which concerns on one Embodiment. The top view (a) and front view (b) which show the internal structure of the trommel type waste sorter | selector which concerns on the same embodiment. Sectional drawing which shows the structure of the other end part of a tubular body. The fragmentary sectional view which shows an example of the control member which controls the bending of a tubular body. The front view which shows the usage condition of the control member shown in FIG.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a block diagram showing the apparatus configuration of a waste treatment facility according to the present embodiment. As shown in this figure, the waste treatment facility 1 of the present embodiment is accommodated in a plastic bag or the like. Wastes such as food waste and food waste discharged from food factories are introduced from outside the system through the waste introduction route L1, and useful substances contained in the introduced waste, for example, biological treatment is possible. Organic materials, metals, sheet waste plastics, etc. are selected and used effectively.

Specifically, a crushing device 10 for crushing the waste introduced through the waste introduction path L1 and a trommel type waste sorting device 20 for sorting the useful materials are provided.
The trommel waste sorting device 20 is introduced with the crushed waste crushed by the crushing device 10 through the crushed waste introduction path L2, and the crushed waste has a relatively specific gravity such as organic matter that can be biologically treated. Large, yet more crushed waste that has been crushed by the crushing apparatus 10 is separated from crushed waste that has a relatively low specific gravity and is bulky, such as sheet-like waste plastics that are generated by breaking plastic bags. It is configured accordingly.
That is, the trommel type waste sorting apparatus 20 is configured such that crushed waste containing a large amount of organic matter that can be biologically treated (hereinafter also referred to as “first crushed waste”), sheet-shaped waste plastics, and the like. It is configured to separate crushed waste (hereinafter also referred to as “second crushed waste”) that is contained more than the waste.
In addition, about paper, what was cut | disconnected finely and softened with the water | moisture content is collect | recovered as a 1st crushing waste mainly biologically processed, and is utilized for biological treatment. On the other hand, sheet-like (not only sheet-like but also bulky) paper is collected as the second crushed waste and incinerated or made into resources.

  Then, the waste treatment facility 1 of the present embodiment removes small metal dust such as bolts contained in the first crushed waste sorted by the Trommel type waste sorting device 20 together with organic matter, so that the first In order to make the crushed waste more suitable for biological treatment, the magnetic separator 30 (hereinafter also referred to as “first magnetic separator 30”) and the first crushed waste from the trommel waste sorter 20 And a first crushing waste path L3 for supplying to the magnetic separator 30.

  In addition, the waste treatment facility 1 of the present embodiment is configured to dispose of large metal garbage such as a beverage can contained in the second crushed waste sorted by the trommel type waste sorting device 20 together with sheet-like waste plastics. After the removal, the second crushed waste is removed from the magnetic separator 40 (hereinafter also referred to as “second magnetic separator 40”) and the trommel waste separator 20 so that the sheet-like waste plastics can be recovered. A second crushing waste path L4 for supplying to the magnetic separator 40;

  Then, the metals collected by the first magnetic separation device 30 and the second magnetic separation device 40 for removing small metal dust from the first crushed waste are washed or separated for each material. And a metal waste path L5, L6 (hereinafter referred to as “metal waste processing paths 50” for supplying metals from the respective magnetic separators 30 and 40 to the metal processing apparatus 50. The waste treatment facility 1 includes a “first metal waste path L5” and a “second metal waste path L6”, respectively.

  Moreover, the waste treatment facility 1 in the present embodiment is configured such that the first pulverized waste, which is made more suitable for biological treatment by removing foreign substances by the first magnetic separation device 30, is subjected to microbial treatment such as methane fermentation and composting. And a biological treatment waste path L7 for introducing the first crushing waste into the biological treatment device 60.

Furthermore, the waste treatment facility 1 of the present embodiment has a plastic sheet collecting device 70 for collecting sheet-like waste plastics from the second crushed waste from which metals have been removed by the second magnetic sorting device 40. And a waste plastics processing device 80 for cleaning the waste plastics recovered by the plastics sheet recovery device 70 to make it easier to reuse.
Then, the waste treatment facility 1 is supplied with the second crushing waste from the second magnetic sorting device 40 to the plastics sheet collecting device 70 through the waste plastics collecting path L8, and the waste plastics processing device. 80 is configured such that waste plastics is supplied from the plastics sheet collecting device 70 through the collected waste plastics path L9. The plastics sheet collecting device 70 collects the waste plastics. It is configured so that the subsequent waste can be discharged out of the system through the waste discharge route L10.

  Next, the trommel type waste sorting apparatus 20 will be described more specifically with reference to FIGS.

FIG. 2 is a front view of the trommel waste sorting apparatus 20, and FIG. 3 is a plan view (a) and a front view (b) showing the internal structure of the trommel waste sorting apparatus 20.
FIG. 4 is a cross-sectional view showing a state of the other end portion of the tubular body installed in the rotary drum of the trommel type waste sorting apparatus 20.
Further, FIG. 5 is a partial cross-sectional view showing an example of a regulating member provided to hold the tubular body in the rotating drum and regulate the bending direction thereof.

As shown also in these drawings, the trommel type waste sorting apparatus 20 in the present embodiment rotates inside the organic waste contained in the crushed waste so as to sort and use it effectively. The drum 24 is provided in a horizontal state, and the rotary drum 24 is provided in a state covered with a chamber 25.
The rotating drum 24 has a cylindrical side wall 24w provided with a large number of through holes, and is provided in the chamber 25 so as to be rotated around the central axis C.
Further, the trommel type waste sorting apparatus 20 in the present embodiment is provided with a tube body 24c along the central axis C of the rotary drum 24, and is used for forming an air flow inside the tube body 24c. A blower (not shown) is provided.

  The chamber 25 has a rectangular parallelepiped shape having a size capable of forming a predetermined gap between the inner wall surface and the outer surface of the side wall of the rotating drum 24, and a base that covers the rotating drum 24 from the lower surface side. And a cover portion 25c that covers the rotary drum 24 from the side surface and the top surface.

The rotating drum 24 is supported from below by rollers 24r fixed to the base portion 25b so as to be rotatable. The rollers 24r are paired on one end side and the other end side of the rotating drum, respectively. The pair of rollers 24 r are provided so as to be spaced apart in the horizontal direction (vertical direction in FIG. 3A) at a distance shorter than the diameter of the rotating drum 24.
The rotating drum 24 is provided to rotate in the direction of arrow W in the figure by rotating the roller 24r by a driving device (not shown) such as a motor.

  Instead of such a rotating drum 24, a shaft body is provided along the central axis C, the shaft body and the side wall 24w are connected by a support beam or the like, and the side wall 24w is rotated by rotating the shaft body. Although a rotating drum to be rotated can be used, the rotating drum 24 in this embodiment may be obstructed by a support beam or the like when a lightweight object moves to the other end side of the rotating drum in a floating state. It is excellent in a low point.

In addition, the trommel waste sorting apparatus 20 according to the present embodiment is configured so that the crushed waste brought about by the crushed waste introduction path L2 is rotated from one end side of the rotating drum 24 (left side in FIG. 3B) as viewed from the front. A waste chute 21 is provided so that the waste chute 21 can be introduced into the interior of 24.
Then, by rotating the rotary drum 24 by the driving device, the crushed waste introduced to the one end side can be moved to the other end side so that the trommel waste sorting device 20 in this embodiment can be moved. The rotating drum 24 is arranged in an inclined state in which the other end side is at a lower position than the one end side.

That is, the direction in which the central axis C of the rotating drum 24 extends is not horizontal, but is inclined slightly downward from one end side toward the other end side. Promotion has been made.
The tilt angle (θ1) is not particularly limited, and can be any angle from −10 degrees to +10 degrees from the horizontal direction (virtual line H in the figure), for example.
This angle varies depending on the material to be treated. When the waste to be separated is low in moisture and is easy to separate organic matter and sheet-like waste, it can be crushed by making it downward in the horizontal direction (0 to +10 degrees). Waste can be quickly separated, and the processing efficiency is increased.
Also, if there is a lot of moisture in the crushed waste and it is difficult to separate organic matter and sheet-like waste, the dwell time in the rotating drum is lengthened by making it upward in the horizontal direction (-10 to -1 degree). In addition, it is possible to easily separate the sheet-like waste and improve the collection efficiency.

By rotating the rotating drum 24 arranged in this way, the first crushed waste containing a large amount of organic matter such as garbage is dropped onto the base portion 25b of the chamber 25 through the through hole. The trommel type waste sorting apparatus 20 of the present embodiment is provided with an undershoot 22 that is opened in the base portion 25b of the chamber 25 and extends downward from the opening, and the first crushing waste is the undershoot. 22 is configured to be discharged toward the first magnetic separator 30.
In addition, the trommel waste sorting apparatus 20 according to this embodiment is configured so that the second crushing waste that has moved through the inside of the rotating drum to the other end side of the rotating drum 24 without passing through the through hole is the other of the rotating drum 24. An opening is provided below the end portion, and the discharge chute 23 extending downward from the opening is discharged toward the second magnetic sorting device 40.

The tube 24c is then positioned in the middle portion of the other end portion 24c ₂ together to position the one end portion 24c ₁ at one end of the rotary drum from one end of the rotary drum toward the other end.
Then, the tube body 24c is one end 24c ₁ is connected to a blower tube 24p extending from the blower, is equipped so as to introduce the gas therein through blowpipe 24p from the blower, the other Since the end 24c ₂ is an open end, an air flow from the one end 24c ₁ to the other end 24c ₂ is formed by the blower, and the air flow is discharged from the opening of the other end 24c ₂ . It is configured accordingly.
Moreover, this tube 24c, flexible variable Tou tube is formed to be freely bent used in at least a portion having, caused bending by discharging the gas from the other end portion 24c ₂ It is formed so that the gas discharge direction can be changed randomly.
Examples of the flexible tube constituting the tube body 24c include a tube that is bent with an elastic body such as rubber, or a hard resin tube or a metal tube formed with a corrugated structure.

The tube body 24c causes the crushed waste to rise in the rotating drum by the wind force generated by the gas discharge, and also causes the bending by utilizing the reaction caused by the gas discharge, thereby randomly changing the gas discharge direction. By doing so, the crushed waste is provided to stir in the rotating drum.
Therefore, it is preferable that the tubular body 24c can be bent by a relatively weak force and is formed in such a manner that fatigue fracture or the like hardly occurs even if it is repeatedly bent. In this respect, the tubular body The entire 24c is preferably constituted by a flexible tube such as a rubber tube.
From the viewpoint of raising the crushed waste and separating the sheet waste and organic matter such as garbage, the position where the other end c ₂ of the tubular body 24 c is arranged is one end of the rotating drum. Although it is not particularly limited as long as it is an intermediate part from the (inlet side) to the other end (outlet side), the sheet-like waste is separated earlier from the crushed waste introduced into the rotating drum. From the viewpoint of effective use of the rotating drum, it is preferably from the one end side of the rotating drum until it reaches half of the entire length of the rotating drum, more preferably 1/4.

Further, the tube 24c, in order to Kase random bending of using recoil of the wind discharged from the other end 24c _2, as shown in FIG. 4, the other end portion 24c _2, wall 24cw It is preferable that a through-hole 24ch penetrating through is provided.
By providing the through-hole 24ch in the tube wall 24cw in this way, gas is also blown out from the through-hole 24ch, and the tubular body 24c is subjected to a lateral force by blowing out the gas from the through-hole 24ch. It becomes.
Therefore, the stress (rebound) in the direction opposite to the blowing direction of the air flow acting by the main air flow Fm discharged from the opening 24x on the other end 24c ₂ side and the side stress due to the air flow Fs from the through hole 24ch Can be bent more vigorously to stir the crushed waste in the rotating drum and lift the sheet.

The through-hole 24ch is not required to be uniformly arranged on the entire circumference leading end of the other end portion 24c _2, for example, when bisected tube 24c watching the opening of the other end portion 24c ₂ from the front The through-holes 24ch may be unevenly distributed so that the other side has a larger amount of gas blowout than the other side.
In this way, by providing the through-hole 24ch in a state of being biased to the tube wall 24cw, random bending due to gas blowing is easily generated in the tube body 24c, and crushing waste is stirred (up of sheet-like waste). The effect on can be improved.
In such a point, the through-hole 24ch is set so that an air volume of 80% or more of the gas discharged from the tube wall 24cw is blown from a range that is within 90 degrees with respect to the center of the opening of the tube body 24. More preferably, it is unevenly distributed.
Furthermore, the formation location of the through-hole 24ch in the length direction of the tube body 24 is not limited to a location very close to the tip, and usually the tube 24c is bent within 30 cm from the tip of the tube 24. It can work effectively.

The tube 24c, in order to exhibit such functions, for example, in the case the whole of the tube 24c is such a rubber tube, is simply considered that arranging the other end portion 24c ₂ as free end .
Examples of the blower for exhibiting such an action include those using a general fan, blower, and compressor.
For example, when the tubular body 24c is a rubber tube having an outer diameter of about 1 to 10 cm and a thickness of about 0.5 to 5 mm, the blower usually introduces crushed waste per unit time. A random airflow change suitable for agitation of the crushed waste can be generated in the rotating drum by carrying out air blowing of about 0.5 to 40 m ³ / min with respect to the amount of 1 t / h.
Further, the present invention is not limited to this case, and the amount of air blown from the blower can be adjusted depending on the type of the flexible tube or the like, and a random change in the airflow discharge direction can be appropriately generated.

When the other end 24c ₂ is simply disposed as a free end, the tube body 24c collides with the crushing waste moving in the rotary drum. For example, the pipe is formed by a metal piece or the like in the crushing waste. The body 24c may be damaged.
Moreover, as a result of being able to bend relatively freely, there is a possibility that gas is discharged in the direction opposite to the moving direction of the crushed waste (toward one end of the rotating drum) and blown the crushed waste upstream. Have.

  In order to efficiently separate organic matter that can be treated with biological material, it is important that the waste material in the form of a sheet is lifted and separated from the organic matter that can be treated with biological material. Even if it is lifted up, it can be expected to have a certain degree of effectiveness in separating organic substances, but in order to perform more efficient separation, the sheet-like waste is moved to the other end side of the rotating drum 24 more quickly. It is preferable to discharge from the discharge chute 23.

For this reason, for example, as shown in FIG. 3 and the like, the support member 24s fixes the central portion of the rotating drum 24 at a position slightly retracted from the other end 24c ₂ toward the one end 24c ₁ and bends by blowing air. It is preferable to restrict the formation of the airflow in the direction opposite to the moving direction of the crushed waste by using only the portion ahead of the support member 24s.
In this case, it is possible to usually, the contact prevention the other end portion 24c ₂ and the crushed waste during blowing by the length from the support member 24s to the distal or less the radius of the rotating drum 24.

Further, a connecting member such as a cord or chain connecting the other end portion 24c ₂ of the rotary drum 24 and tube 24c in place of the method of using such a support member 24s as a restricting member for restricting the bending of the tube 24c It can also be used as a regulating member that regulates the bending of the tube body 24c.
For example, the other end 24c ₂ of the tubular body 24c is suspended so as to be positioned at the center of the rotating drum 24 with a chain whose one end is fixed to the top surface portion of the rotating drum 24, and below the other end 24c ₂ and on the left and right sides. In the same manner, the tube 24c and the rotating drum 24 are connected with a chain, and the upper and lower, left and right chains are connected with slack, and the movement of the other end 24c ₂ during blowing is performed. It is possible to prevent contact with the crushed waste while regulating the gas blowing direction to the other end side of the rotary drum 24 by regulating the amount of slack.

Furthermore, as shown in FIG.
The regulating member S shown in FIG. 5 includes a cylindrical portion S1 having an inner diameter that is slightly larger than the tubular body 24c, and a diameter-enlarged portion S2 spreading in a trumpet shape from the tip of the cylindrical portion S1. A through hole Sh through which the tubular body 24c can be inserted is formed in the shape portion S1.
And the said enlarged diameter part S2 has the side wall Sw which spreads in the trumpet shape from the opening edge of the through-hole Sh in the inner surface.

In the trommel type waste sorting apparatus 20 according to the present embodiment, when the restriction member S is used, as shown in FIG. 6, the diameter-enlarged portion S2 can be sufficiently accommodated in the rotating drum 24 (for example, The cylindrical portion S1 is arranged on one end side (upstream side) of the rotating drum 24, and the enlarged diameter portion S2 is located downstream of the cylindrical portion S1. Can be used.
The angle (θ2, θ2 ′) formed by the central axis C of the rotating drum 24 and the side wall Sw in the enlarged diameter portion S2 of the regulating member S is not particularly limited, but it is 90 from the viewpoint of suppressing the air flow to the upstream side. It is preferably less than 85 degrees, more preferably less than 85 degrees.
Moreover, it is preferable to set the angle of the side wall Sw so that the airflow toward the bottom surface of the rotary drum 24 is not restricted, and the shape of the enlarged diameter portion S2 is at least an angle θ2 downward from the central axis C. It is desirable that 'is 30 degrees or more, preferably 45 degrees or more.

Further, the through hole Sh in tube 24c the tip of the horn-shaped side wall Sw upon being inserted further than the tip of the other end portion 24c ₂ of the tubular body 24c downstream (the other end side of the rotary drum) By arranging so as to be located at the side, the bending of the tube body 24c is regulated by the side wall Sw, and the contact between the tube body 24c and the crushed waste can be more reliably prevented.
Moreover, by using such restriction member, for example, airflow Fs discharged from the through hole 24ch formed at the other end 24c ₂ of the tube 24c is, the other end portion of the rotating drum 24 by the side wall Sw will be extruded to the side (downstream side), the sheet material has to rise up by the main air flow Fm generated from the other end 24c ₂ of the tube 24c, it is formed toward the downstream side by the side wall Sw Can be accompanied by airflow.

Even in the aspect using the regulating member such as the support member 24s and the connecting member so far, the gas blowing direction is regulated so as to be on the other end side of the rotating drum 24. In addition, formation of an air flow from the upstream side to the downstream side (from one end side to the other end side) can be expected.
If the air flow from the upstream side to the downstream side is to be formed more reliably in the rotating drum 24, it can be realized by providing a new blower separately from the blower that blows air to the tube body 24c. However, the regulating member S shown in FIG. 5 does not require a new blower or uses a new blower because an air flow toward the downstream side is more reliably formed by the side wall Sw. However, it can be said that it is excellent in that the power used can be reduced.

In the trommel type waste sorting apparatus 20 having such a configuration, for example, even when the introduced crushing waste contains sheet-like waste plastics in addition to organic matter that can be biologically treated. Since the sheet-like waste plastics are swollen by the air flow Fm discharged from the other end 24c ₂ of the tube body 24c, the organic matter passes through the through hole of the rotating drum 24. Can be inhibited.
Even if the organic matter is swollen up by the air flow Fm, the organic matter usually contains a lot of moisture and the falling speed is higher than that of the sheet-like waste plastics. There is a low risk of obstruction.

This will be explained more specifically. Since the sheet-like waste plastics may block the through-holes and hinder the passage of the organic matter, the sheet-like waste plastic can be used to efficiently sort the organic matter. It is effective to quickly move the waste plastics to the downstream side and discharge from the discharge chute 23.
Usually, crushed waste with a small bulky apparent specific gravity, such as sheet-like waste plastics, is located relatively above the crushed waste contained in the rotary drum 24, but in many cases, The crushing waste is partly sandwiched and restrained and the restraint is released when the crushing waste cannot follow the movement of the side wall 24w due to the rotation of the rotating drum 24 and collapses. It becomes.
However, on the other hand, if a high specific gravity material falls on the sheet-like waste plastics, it will be restrained again.

Therefore, the sheet-shaped waste plastics is lifted up by the air flow generated from the tube body 24c, and the sheet-shaped waste plastics are slowly dropped as compared with the high specific gravity material. It can suppress that a high specific gravity falls and a sheet-like waste plastics is restrained again.
In this way, the sheet-like waste plastics are slowly dropped, and in the meantime, the sheet-like waste plastics are entrained in the air flow toward the other end of the rotating drum 24 and greatly downstream. Can be moved.
And the sheet-like waste plastics moved to the downstream side can be discharged out of the system from the discharge chute 23.

By this, the factor which inhibits passage of the through-hole of organic substance is reduced, and more organic substance can be contained in the 1st crushing waste.
For example, when performing methane fermentation etc. as biological treatment, the yield of methane gas can be increased.
Moreover, in the present embodiment, the biological treatment is performed after removing small metals such as bolts and nuts that are easily mixed into the first crushing waste by the first magnetic separation device 30. The organic substance recovery suitable for biological treatment can be expected.

Moreover, it becomes easy to collect | recover the waste with higher utilization value from a 2nd crushing waste because the organic substance mixed in a 2nd crushing waste reduces.
For example, plastic bags used for storing waste are waste plastics having a relatively constant quality, and can be reused by providing a plastic sheet collecting device 70 for collecting sheet-like waste plastics. It is possible to collect waste plastics of a certain quality that is easy to do.
In addition, as described above, mixing of organic substances into the second crushing waste is reduced, and large metals such as empty cans that are easily mixed into the second crushing waste are removed by the second magnetic sorting device 40. Since the plastic sheet is collected after that, the collection efficiency of the plastic sheet can be improved.

As such a plastics sheet collection | recovery apparatus 70, the vibration sieve with a large sieve can be utilized, for example.
In addition, when a device that combines wind separation by blowing wind from the side on the vibrating screen or blowing upward from the bottom of the vibrating screen is used instead of the vibrating screen alone. Sheet-like waste plastics can be collected more efficiently.
As another plastic sheet recovery device 70, a plurality of rotating shafts provided with a plurality of hooking blades are spanned in parallel with the upper opening of the box-like container (for example, two axes). The thing of the system which sorts the crushing waste which passes between shafts, and the sheet-like waste plastics excluded outside a box-shaped container with this hook blade is mentioned.
Or what uses a roller screen is also employable.
In addition, other sheet-like waste may be separated using the same apparatus.

In addition, since the metals recovered by the first magnetic sorting device 30 and the second magnetic sorting device 40 can be effectively used, the amount of waste finally discharged can be reduced. It can be said that the processing equipment is not only excellent in processing efficiency but also effective in reducing the environmental load.
In particular, in the second magnetic separator 40, metal that does not pass through the through hole of the rotary drum 24 is recovered, but as such metal, there are many cans such as steel cans, and valuable metal that is easy to reuse is recovered. be able to.
An eddy current separation device may be separately provided to recover the aluminum can.
Moreover, in order to promote agitation and separation in the rotating drum by exposing it to a strong spiral flow (circumferential airflow) at the front stage of the rotating drum, it is possible to effectively use the through hole provided at the rear stage of the rotating drum. This increases the separation efficiency of the rotating drum.

  Therefore, while crushing waste obtained by crushing waste containing organic matter that can be biologically treated, the crushing waste in the rotating drum is agitated by using such a trommel type waste sorting device. By performing the organic matter separation, waste can be separated with high efficiency.

  Although not described in detail here, conventionally known matters are employed as technical matters relating to the trommel type waste sorting device, waste treatment facility, and waste separation method, as long as the effects of the present invention are not significantly impaired. It is possible to change the configuration to the above example as appropriate.

For example, in the waste treatment facility of the present invention, the first magnetic separation device and the second magnetic separation device are not essential components, and may be installed as necessary, and only one of them is installed. May be.
Similarly, a metal processing apparatus is not an essential component, and a metal processing apparatus may be provided in each of the first magnetic sorting apparatus and the second magnetic sorting apparatus.

DESCRIPTION OF SYMBOLS 1 Waste treatment facility 10 Crushing device 20 Trommel type waste sorting device 21 Waste chute 22 Undershoot 23 Discharge chute 24 Rotating drum 24c Tube 24c ₁ One end 24c ₂ Other end 24ch Through hole 24cw Tube wall 24r Roller 24s Support Material 24w Side wall 24x Opening 25 Chamber 25b Base part 25c Cover part 30 Magnetic sorting apparatus 40 Magnetic sorting apparatus 50 Metal processing apparatus 60 Biological processing apparatus 70 Plastics sheet collection apparatus 80 Waste plastic processing apparatus C Central axis Fm Airflow Fs Airflow S Regulating member S1 Cylindrical portion S2 Large diameter portion Sh Through hole Sw Side wall H Horizontal axis L1 Waste introduction route L2 Crushed waste introduction route L3 Crushed waste route L4 Crushed waste route L5 Metal waste route L6 Metal waste route L7 Biological treatment waste route L8 Waste plastics recovery route L Collected waste plastics route L10 waste discharge path

Claims (6)

A crushing waste containing organic matter that can be bioprocessed is used for separation, and is provided with a rotating drum that is provided with a through hole in a cylindrical side wall and is rotatable around an axis. The crushing waste is moved from one end side to the other end side of the rotating drum by rotating the rotating drum in a state where the waste is accommodated inside, and passes through the through-hole and out of the rotating drum. It is configured to be separated into crushed waste containing discharged organic matter, and crushed waste discharged from the other end side by moving to the other end side in the rotating drum, A trommel type waste sorting device further provided with a blower for generating an air flow in a rotating drum,
A tube body is provided in the rotating drum, and the tube body has an end portion located on one end portion side of the rotating drum, and the other end portion between the one end portion and the other end portion of the rotating drum. It is located in the rotary drum so that the gas introduced from the one end by the blower can be discharged from the other end, and the tube has gas from the other end. A trommel type waste sorting apparatus, wherein a flexible tube is used so that bending can be caused by discharging gas and the gas discharge direction can be changed randomly.   The trommel type waste sorting apparatus according to claim 1, wherein the other end of the tubular body is provided with a through-hole penetrating the tubular wall.   The regulating member which regulates the bending of the said pipe body is further provided so that it can prevent that gas is discharged | emitted from the other end part of the said pipe body toward the one end part side of a rotating drum. Trommel type waste sorting apparatus as described.   As the restricting member, a restricting member having a through hole into which the tubular body can be inserted and a side wall extending in a trumpet shape from the opening edge of the through hole toward the other end side of the rotating drum is provided, In addition, the tubular member is inserted into the through hole so that the tip end portion of the trumpet-shaped side wall is located on the other end side of the rotating drum with respect to the other end portion of the tubular body, and the restriction member is provided. The trommel type waste sorting apparatus according to claim 3. A crushing waste containing organic matter that can be bioprocessed is used for separation, and is provided with a rotating drum that is provided with a through hole in a cylindrical side wall and is rotatable around an axis. The crushing waste is moved from one end side to the other end side of the rotating drum by rotating the rotating drum in a state where the waste is accommodated inside, and passes through the through-hole and out of the rotating drum. It is configured to be separated into crushed waste containing discharged organic matter, and crushed waste discharged from the other end side by moving to the other end side in the rotating drum, A waste treatment facility having a trommel type waste sorting device further comprising a blower for generating an air flow in a rotating drum,
The trommel-type waste sorting apparatus includes a tubular body in the rotating drum. The tubular body has one end positioned on one end of the rotating drum and the other end of the rotating drum. It is located in an intermediate part from one end part to the other end part, and is provided in the rotating drum so that the gas introduced from the one end part by the blower can be discharged from the other end part side, and the tube A waste treatment facility characterized in that a flexible pipe is used on the body so that bending can be caused by discharging gas from the other end side to change the discharge direction of the gas at random. A crushing waste obtained by crushing a waste material containing organic matter that can be treated with a biological material is provided with a rotating drum that is provided with a through-hole in a cylindrical side wall and is rotatable around an axis. And introducing into the rotating drum of a trommel-type waste sorting apparatus further provided with a blower for generating air flow in the rotating drum, and rotating the rotating drum to crush the crushing The waste is moved from one end side to the other end side of the rotating drum, and the air flow is generated in the rotating drum by the blower, and the organic matter discharged through the through hole is discharged outside the rotating drum. A waste separation method for carrying out separation between crushing waste and crushing waste discharged from the other end side by moving to the other end side in the rotating drum,
The trommel-type waste sorting apparatus includes a tubular body in the rotating drum. The tubular body has one end positioned on one end of the rotating drum and the other end of the rotating drum. It is located in an intermediate part from one end part to the other end part, and is provided in the rotating drum so that the gas introduced from the one end part by the blower can be discharged from the other end part side, and the tube In the body, a flexible tube is used so that bending can be caused by discharging gas from the other end side and the discharging direction of the gas can be changed randomly, and the discharging direction is changed randomly. A waste separation method, wherein the separation is carried out while stirring the crushed waste in a rotating drum with a gaseous wind power.

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