JP2017026414A - Flexible container bag breaking device and bag breaking method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bag breaking device for automatically breaking a flexible container in which a radiation contaminated soil is infilled and separating a flexible container (bag-broken container) and a soil after the bag is broken, without requiring an operator.SOLUTION: The flexible container bag breaking device is provided that is for use in a bag breaking step of breaking bag of the flexible container filled with a radiation contaminated soil and separating filled substance and a bag-broken container. The flexible container bag breaking device comprises: cutting means for forming a cut at a lower part of the side surface of the flexible container; and conveyance means provided at both sides along the advancing direction of the flexible container formed with the cut and set so as to sandwich both side surfaces of the flexible container, and further comprises a stacking tray provided downward of the advancing direction of the flexible container.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a bag breaking device that automatically breaks a flexible container filled with radiation-contaminated soil without requiring an operator and separates the broken bag container from the soil.

  The decontamination product generated in the decontamination work in Fukushima Prefecture is currently stored in a large storage container in a large storage container. These decontamination wastes are separated, transported and stored in intermediate storage facilities such as storage and volume reduction.

In such an intermediate storage facility, in order to reduce the volume of the removed product, it is essential to take out the decontaminated product from the flexible container.
The flexible container (capacity 1m ³ ) filled with the decontamination product generated in the decontamination work is squeezed by the operator, tied with a binding string, and placed in a temporary storage area. The total amount is estimated to reach 28 million m ³ , and flexible containers filled with decontamination removal products are expected to reach tens of millions of bags. It is being considered to process this at an intermediate storage facility under a five-year plan. For this purpose, 300t / h processing is desired, and the goal is to break 3 bags per minute.

However, such a flexible container transportation and bag breaking work cannot be achieved at all by manual work because of the exposure of workers, time restrictions, and inefficiency.
For this reason, the advent of a method or apparatus capable of continuously and efficiently breaking a flexible container filled with radiation-contaminated soil has been desired.

  For example, Patent Document 1 (Japanese Patent Application Laid-Open No. 9-156622) discloses an apparatus that breaks a bag while moving a synthetic resin film bag containing solid waste such as radioactive pollutants and general waste on a belt conveyor. Yes, an ultrasonic or heater type cutter means is used, and the cutter means is supported by the support means so as to be able to oscillate in parallel with the moving direction of the synthetic resin film bag, and is oscillated in parallel with the moving direction of the synthetic resin film bag. A configuration is disclosed in which a movable resin can be moved, and a cutting line is made in accordance with the movement of the synthetic resin film bag.

  Patent Document 2 (Japanese Unexamined Patent Application Publication No. 2015-105095) discloses a method of opening with a water jet as a method of opening a flexible container bag for storing and transporting objects to be stored such as radioactive waste and industrial waste. Is disclosed.

Japanese Unexamined Patent Publication No. 9-156622 JP-A-2015-105095

  In the prior art as described above, a slinging operation is required, and human power is used for the separation work of the bag breaking container and the filling material. Therefore, in terms of safety and efficiency, it is not always necessary. It was not enough.

  For this reason, there has been a demand for the emergence of a device that improves the safety of workers and reduces the exposure of workers by non-contact, high-speed, continuous and efficient bag breaking and sorting.

The flexible container bag breaking apparatus according to the present invention is:
A flexible container bag breaking device used in a bag breaking process for separating a flexible container in which radiation-contaminated soil is filled, and separation of the filled material and the broken bag container,
Cutting means for forming a cut at the lower side of the flexible container;
Transport means provided on both sides along the traveling direction of the flexible container in which the cut is formed, and set so as to sandwich the side surface of the flexible container,
And a stacking tray that is provided below the flexible container in the traveling direction and collects the contents.

In one aspect of the transporting means that transports the flexible container while sandwiching the side surfaces thereof, the distance between them is gradually narrowed toward the traveling direction.
One aspect of the conveying means is a chain conveyor, a roller conveyor, or a belt conveyor.

One aspect of the cutting means is a metal blade, a water jet cutter, or a laser cutter.
As another aspect, a transport band for introducing a flexible container is connected to the bag breaking apparatus, and the transport band has a mechanism for measuring the radioactive concentration of the flexible container.

  As yet another aspect, a transporting zone for introducing a flexible container is connected to the bag breaking device, and a transfer mechanism is provided that automatically unloads and moves the flexible container from the flexible container transporting vehicle to the transporting belt.

The bag breaking method according to the present invention is:
It is characterized in that the filling and the sacking container are separated from each other by pulling so as to sandwich the side of the flexible container and squeeze the contents while providing a cut in the lower side of the flexible container filled with radiation-contaminated soil. To do.

  According to the present invention, a cut is formed in the lower part of the side surface of the flexible container, and the flexible container with the cut is squeezed from the conveying means set so as to sandwich both side surfaces along the traveling direction. By pulling in this way, the filling material and the broken bag container are automatically separated.

  For this reason, the bag breaking apparatus of the present invention does not use the human power of the worker at the time of bag breaking / sorting, and can perform bag breaking / sorting efficiently in a non-contact, high-speed, continuous and efficient manner. The safety is also improved. Therefore, it is possible to process 3 bags per minute.

The schematic of the one aspect | mode of the flexible container bag breaking apparatus concerning this invention is shown. The schematic of another one aspect | mode of the flexible container bag breaking apparatus concerning this invention is shown. The schematic of another one aspect | mode of the flexible container bag breaking apparatus concerning this invention is shown. The schematic of the transfer apparatus (flexible container transfer apparatus) for flexible containers concerning this invention is shown. The conceptual diagram of the flexible container bag breaking apparatus by this invention is shown. The conceptual diagram of the flexible container bag breaking apparatus by this invention is shown.

Hereinafter, although the flexible container bag breaking apparatus of this invention is demonstrated, referring FIGS. 1-6, this invention is not limited to these drawings at all.
[Bag breaker]
The bag breaking apparatus according to the present invention is an apparatus used in a bag breaking process for performing bag breaking of a flexible container in which an inner filling material is filled, and separating the inner filling material from the bag breaking container.

The inclusion in the flexible container is, for example, radiation-contaminated soil collected by decontamination, and the contaminated soil includes dead trees, grass and the like in addition to soil and gravel.
The flexible container is not particularly limited, and has a volume and strength capable of filling a heavy weight of about 1 ton, and is composed of a sheet and a belt woven with chemical fibers such as polyethylene, polypropylene, vinyl chloride, and vinyl acetate. . A rectangular or cylindrical shape is used as the shape, but is not limited thereto.

FIG. 1 shows an example of an embodiment of the flexible container bag breaking apparatus according to the present invention. As shown in FIG. 1, the bag breaking apparatus 1 according to the present invention includes a cutting means 3 for forming a cut in the flexible container 2, and
Conveying means 4 provided on both sides along the traveling direction of the flexible container in which the cut is formed, and set to sandwich the side surface of the flexible container;
And a stacking tray 5 that is provided below the direction of travel of the flexible container and collects the contents.

  For example, as shown in FIG. 1, a flexible container transporting means 11 such as a conveyor for introducing the flexible container 2 is connected to the bag breaking apparatus 1, and the flexible container 2 ( An inclined guide path 7 for separating the inner filling from the flexible container 2 may be provided at the lower part of the conveying means 4 for sandwiching the side surface of the bag-breaking container). A sieve member 8 such as a grizzle may be provided on the upper portion of the stacking tray 5 for the purpose of preventing mixing of broken bag container fragments.

  Furthermore, in the lowering of the collecting tray 5, an inclusion transport means 9 such as a conveyer for transporting the sorted inclusions such as soil may be provided. Further, even if a bag breaking container transporting means 10 such as a conveyor for transporting the bag breaking container 2 after separating the inner filling material to the collection field, it is provided so as to be connected to the end of the transporting means 4. Good.

Cutting means 3
As the cutting means for the flexible container, known cutting means can be employed without any particular limitation, and specific examples include a metal blade, a water jet cutter, a laser cutter, an ultrasonic cutter, a heater knife, and the like. Among these, from the viewpoint of automatic processing, a metal blade, a water jet cutter, and a laser cutter are preferable, and the water jet cutter is more preferable in consideration of replacement of the flexible container by heat or blade spillage.

  The water jet cutter includes a pump that generates high-pressure water, a nozzle, a pipe that connects the pump and the nozzle, and a control device. The high-pressure water generated by the pump is jetted as water jets from two injection ports through the pipe. A cutting means for cutting.

  The water jet is, for example, a thin water stream in which water pressurized to about 300 MPa by a pump is ejected through an ejection port having a diameter of about 0.1 mm to 1 mm. In addition, since the cutting water generated by the water jet is absorbed into the soil, no special waste water treatment is required.

  Usually, the cutting means is supported by the support means 12. The support means 12 is composed of a portal frame and cutting means 3 installed at the tip of the frame. Even if the support means is provided with a hinge mechanism and a spring mechanism, the cutting means moves to a predetermined position in the support means during cutting, and the cutting means 3 after cutting is returned to the original position. Good.

  Although the cutting start position is not particularly limited, the side surface in the vicinity of the bottom of the flexible container is preferable from the viewpoint that the embedded material is easily discharged from its own weight. Usually, in order to make a cut from the center of the flexible container, it is desirable that the cutting means is installed in advance near the bottom of the center of the flexible container.

  Along with the movement of the flexible container, the gate-type frame of the support means 12 is opened, the cutting means is balanced on the bottom surface, moves in the circumferential (square) direction, and after cutting the flexible container, the gate-type frame is closed. To return to the original position.

Conveying means 4
The apparatus according to the present invention includes transport means 4 that sandwiches the side surface of the flexible container 2.
The conveying means 4 has a configuration in which the flexible container cut by the cutting means 3 is pulled forward with the side face interposed therebetween. The filling in the flexible container is discharged from the cut made by the cutting means 3 by its own weight. At the same time as the flexible container is pulled in the traveling direction by the transport means 4, the cutting is performed by the cutting means 3 at the same time in the lower part of the flexible container. Although cutting around the flexible container 2 is performed up to about one round, the bottom portion may be completely cut off or may be left in a connected state.

  Furthermore, it is preferable that the separation distance of the transport means 4 is gradually narrowed toward the traveling direction as shown in FIG. With such a configuration, the filling material is squeezed out from the flexible container 2, so that the remaining filling material in the flexible container can be reduced.

Although it will not restrict | limit especially as a conveyance means 4 if a flexible container can be clamped, It is preferable that they are a chain conveyor, a roller conveyor, or a belt conveyor.
Further, a pair of conveying means 4 shown in FIG. 1 is used, but is not particularly limited. Further, as shown in FIG. 2, as the conveying means 4, two or more stages of conveying means are adopted so that the separation distance is greatly narrowed at the first stage (4a) and the angle narrowed at the second stage (4b) is relaxed. It may be.

Stacking tray 5
In the apparatus according to the present invention, an accumulation tray for collecting the contents is provided below the flexible container in the traveling direction.

  The stacking tray 5 is a frame-shaped member that expands upward, and is fixed to support members provided on the left and right sides as shown in FIG. The stacking tray 5 is provided with a conveyor as a hopper that receives the inner packing separated from the flexible container, and as an inner packing conveying means 9 for carrying out the inner packing received in the hopper.

  In the upper part of the hopper, a sieve member 8 such as a comb-like grizzly or a net for separating soil from a broken bag container or a broken broken bag container is provided. A chute is provided below the hopper so as to lead to the inner material transport means 9 accumulated from the flexible container.

The bag-breaking container 2 is placed on the bag-breaking flexible container transport zone 10 and sent to the collection field.
A belt conveyor etc. are mentioned as the inside-packed material conveyance means and the bag-breaking flexible container conveyance means 10.

  Moreover, even if the collection tray 5 is provided with the inclined guide path 7 for the purpose of preventing the broken container or its fragments from being mixed into the separated inclusions or blocking the hopper of the collection tray 5. Good. The inclined guide path 7 is provided at an inclination angle that makes it easy for the bag-breaking container to slide down on the bag-breaking flexible container conveying means 10.

Flexible container transport means 11
A flexible container conveying means 11 for introducing the flexible container 2 may be connected to the bag breaking apparatus 1.

  Specific examples of the flexible container transport means 11 include a belt conveyor, a chain conveyor, and a roller conveyor. The flexible container 2 is placed on the flexible container transport means 11 and sent to the bag breaking apparatus 1 according to the present invention.

  In order to measure the radioactivity concentration before entering the bag breaking apparatus 1 according to the present invention, a radioactivity concentration measurement mechanism 13 may be provided in the middle of the conveyance path by the flexible container conveyance means 11 as shown in FIG. . Although FIG. 3 is provided with a radioactivity concentration measuring mechanism in the bag breaking apparatus of FIG.

  The radioactivity concentration measurement mechanism 13 is composed of a shielding chamber 14 and a radioactivity measurement device 15, and when a flexible container containing radioactivity of a predetermined concentration or more is included, it is separated into another path depending on the radioactivity concentration measurement result. Thus, mixing into the bag breaking apparatus 1 of the present invention can be prevented.

  As shown in FIG. 4, the flexible container transport unit 11 is also provided with a transfer mechanism that automatically unloads and moves from the flexible container transport vehicle to the transport belt.

  FIG. 4 is a schematic view of an apparatus for automatically unloading the flexible container loaded with the radiation-contaminated soil loaded on the flexible container transport vehicle to the flexible container transport means 11.

  When the loading platform of a flexible container transport vehicle such as a truck is laid on the platform, the extruded body (pusher) of the transfer device (flexible transfer device) for the flexible container slides and pushes the flexible container to the platform. The platform itself is included in the flexible container transport means 11.

  The flexible container transfer device includes an elevating mechanism, and the height is adjusted to push out the flexible container 2 from a position substantially the same as the loading platform. An inclined platform called a chute is installed on the platform side of the transport vehicle, and the flexible container pushed out through the chute is carried to the platform. The chute is provided with a roller and a stopper, and is configured to promote movement of the flexible container and stop at a predetermined position.

  The platform may constitute a part of the flexible container conveying means 11, for example, a chain conveyor, and may be replaced by being slid on the belt conveyor in the middle.

  In addition, after the loading platform of the flexible container transport vehicle is laid on the platform, the moving guide is passed to the flexible container transport vehicle and pushed out accurately by the pusher, and the bending of the extruded flexible container is corrected. May be.

If such a transfer mechanism is used, an operation such as a sling is not required, and it is possible to unload, unpack, and sort the bag more non-contactly and at a high speed and continuously.
The concept of the operation of the bag breaking apparatus according to the present invention as described above is shown in FIGS. FIG. 5 is a conceptual diagram showing an outline of each operation in the apparatus of FIG. 1 and FIG. 6 is the apparatus of FIG.

  5 and 6, the flexible container 2 is transported by the transport means 11 as shown in the process (1). At this time, the cutting means 3 may be open or closed. Then, as shown in the step (2), the cutting means is positioned near the central portion and the lower bottom surface of the flexible container 2 and starts to cut. At the same time, the flexible container 2 is fed forward by being sandwiched between transport means 4 such as a conveyor (FIG. 5), 4a and 4b (FIG. 6). As shown in steps (3) and (4), the flexible container 2 is further cut while changing the position of the cutting means 3 in accordance with the progress of the flexible container 2. The inclusions such as the soil inside the container are discharged from the break due to their own weight, and the extraction is started. The taken inner filling is sent out of the bag breaking apparatus from the collecting tray 5 through the inner filling conveying means 9. As shown in the step (5), the bag breaking container 2 is fed by the sieving member 8 through the inclined guide path 7 by the sieving member 8 through the inclined guide path 7.

The bag breaking apparatus according to the present invention is provided, for example, in an intermediate storage facility.
Specifically, in order to remove radioactive material that has poured onto the topsoil, the topsoil of several tens of centimeters is stripped, and the stripped soil (radioactive waste such as soil with radioactive material attached) is placed in a flexible container and placed in the middle Temporary storage in storage until the storage facility is completed. Then, the bag breaking apparatus according to the present invention is installed in the completed intermediate storage facility, the flexible container containing the radioactively contaminated soil is transported to the intermediate storage facility by a transport vehicle such as a truck, and the present invention installed in the intermediate storage facility. The flexible container is broken by the bag breaking apparatus according to the above, and the radioactively contaminated soil stored in the flexible container is stored in the radioactive waste storage unit of the intermediate storage facility. The bag-breaking container is subjected to processing such as incineration, embedding and storage according to the radioactivity concentration.

[Breaking method]
The method for breaking a bag of a flexible container according to the present invention includes the step of forming a cut in the lower side surface of the flexible container in which radiation-contaminated soil is embedded, and pulling the inner side of the flexible container so as to squeeze the contents. And bag-breaking container are separated.

In such a bag breaking method, the above-described flexible container bag breaking apparatus is used.
According to such a method, it is possible to separate the broken bag container and the filling material without requiring a slinging operation, and by automatically cutting the cut, so that the number of workers and the low exposure amount can be reduced as compared with the conventional method. In addition to being able to achieve high-speed and continuous processing in a non-contact manner, it is possible to carry out a continuous bag breaking process of 3 bags per minute, which could not be considered before.

DESCRIPTION OF SYMBOLS 1 ... Bag breaking apparatus 2 ... Flexible container 3 ... Cutting means 4 ... Conveying means 5 ... Stacking tray 6 ... Bag breaking apparatus 7 ... Inclination guide path 8 ... Sieve Member 9 ... Conveying means 10 for filling material ... Conveying means 11 for bag-breaking flexible containers ... Flexible container conveying means 12 ... Supporting means 13 ... Radioactivity concentration measuring mechanism 14 ... Shielding chamber 15 ... Radioactivity measuring device

Claims (7)

A flexible container bag breaking device used in a bag breaking process for separating a flexible container in which radiation-contaminated soil is filled, and separation of the filled material and the broken bag container,
Cutting means for forming a cut at the lower side of the flexible container;
Transport means provided on both sides along the traveling direction of the flexible container in which the cut is formed, and set so as to sandwich the side surface of the flexible container,
A flexible container bag breaking apparatus, comprising: an accumulation tray that is provided below the traveling direction of the flexible container and collects the contents.   The flexible container bag breaking apparatus according to claim 1, wherein the distance between the transporting means that sandwich and transport the side surface of the flexible container is gradually reduced toward the traveling direction.   The flexible container bag breaking apparatus according to claim 1 or 2, wherein the conveying means is a chain conveyor, a roller conveyor, or a belt conveyor.   4. The flexible container bag breaking apparatus according to claim 1, wherein the cutting means is a metal blade, a water jet cutter, or a laser cutter.   The flexible container breaking bag according to any one of claims 1 to 4, wherein a conveyance band for introducing a flexible container is connected to the bag breaking apparatus, and the conveyance band is provided with a radioactivity concentration measuring mechanism of the flexible container. apparatus.   6. A transfer belt for introducing a flexible container is connected to the bag breaking apparatus, and a transfer mechanism for automatically unloading and moving the flexible container from the flexible container transfer vehicle to the transfer band is provided. The flexible container bag-breaking device described in 1.   It is characterized in that the filling and the sacking container are separated from each other by pulling so as to sandwich the side of the flexible container and squeeze the contents while providing a cut in the lower side of the flexible container filled with radiation-contaminated soil. How to break a flexible container.

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