JP2015105095A - Opening method of bag storing stored object - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an opening method of a bag storing a stored object which is excellent in safety and work efficiency.SOLUTION: A bag storing a stored object (a flexible container bag 2) is opened by cutting the bag from the outside by a water jet. After moving the bag by a hoist and placing the bottom surface of the bag on a conveying surface of a belt conveyor 30, the bag is conveyed. Nozzles 40A, 40B of a water jet device 40 are disposed between one conveyor 31 and the other conveyor 32 provided with an interval along a conveying direction. After the bottom surface of the bag is cut by jetting the water jet by jetting ports 40a, 40b of the nozzles when the bottom surface of the bag passes between one conveyor and the other conveyor, and when the bag goes beyond the belt conveyor 30 and is suspended in the air by the hoist 10, the bottom surface of the bag which has been cut is opened by the weight of the stored object, and the stored object falls down.

Description

  The present invention relates to a method for opening a bag containing an object to be stored.

As a bag for storing and transporting objects to be stored such as radioactive waste and industrial waste, for example, a bag called a highly durable flexible container bag is known (see Patent Document 1).
And as a method of opening the flexible container bag which accommodated the to-be-contained object, the method of fusing the bottom face of a flexible container bag with a heater (refer patent document 2 etc.), The method of cut | disconnecting the bottom face of a flexible container bag with a blade (patent document) 3; 4; 5 etc.) are known.

JP 2012-121629 A Japanese Patent Laid-Open No. 10-114317 Japanese Patent Laid-Open No. 11-292044 JP 2004-323115 A JP 2009-96545 A

However, when a combustible material is contained as an object to be contained, the method of fusing with a heater may cause a fire, which is problematic in terms of safety. In addition, when a hard material such as metal or stone is contained as an object to be contained, the method of cutting with a blade may damage the blade, which is problematic in terms of work efficiency.
The present invention provides a method of opening a bag containing an object to be stored, which is excellent in safety and work efficiency.

In the method for opening a bag containing an item to be stored according to the present invention, the bag containing the item to be stored was cut from the outside of the bag with a water jet and the bag was opened. Since the bag is cut in a state where the object to be stored in the bag and the nozzle of the water jet device are not in contact with each other, an unsealing method with excellent safety and work efficiency can be provided.
The method for opening a bag containing an object to be stored according to the present invention is such that the bag containing the object to be stored is moved by a hoist equipped with a suspension device and a traversing device, and the bottom surface of the bag is placed on the conveyor conveying surface. After that, the bag is transported by the traversing device and the conveyor, and the nozzle of the water jet device is arranged between one conveyor and the other conveyor provided at intervals along the transport direction. When the bottom surface of the bag containing the bag passes between one conveyor and the other conveyor, a water jet is sprayed from the nozzle outlet and the bottom surface of the bag is cut from the outside of the bag. Since the bottom of the bag that has been cut is opened by the weight of the object to be suspended when the object is suspended in the air by the hoist suspension device, Safety, or Is excellent in working efficiency, the cutting operation of the bottom of the bag containing the contained object, and, thereby the automation of the opening work of the bottom of the cut bag.

(A) is a top view which shows an opening device, (b) is a front view which shows an opening device. The top view which shows the cutting method. (A) thru | or (c) is operation | movement explanatory drawing which shows the cutting method, (d); (e) is a figure which shows the example of formation of a cutting line. The front view which shows the structure of the conveyor and water jet apparatus of an opening apparatus. Explanatory drawing which shows a cutting | disconnection state. The perspective view which shows the example of arrangement | positioning of the nozzle of a water jet apparatus. Operation | movement explanatory drawing which shows the cutting | disconnection method.

Embodiment 1
With reference to FIG. 1 thru | or FIG. 3, the opening apparatus 1 for implement | achieving the opening method of the bag which accommodated the to-be-contained object which concerns on Embodiment 1 is demonstrated.
The unsealing apparatus 1 includes a suspension unit that suspends a bag that accommodates an object to be stored, a circulation movement guide unit that circulates and moves the suspension unit, a conveyance unit that conveys a bag that accommodates an object suspended by the suspension unit, The apparatus includes a water jet device 40, a suspension unit, a transport unit, and a control unit that controls the water jet device 40.
The object to be contained is, for example, radioactive waste 8, and the radioactive waste 8 is, for example, radioactive waste 8 such as soil, combustible material, incombustible material, metal, or the like to which the radioactive material is attached.
The bag is, for example, a highly durable flexible container bag 2 containing the radioactive waste 8.
The opening device 1 is provided in the intermediate storage facility 3, for example.
For example, in order to remove radioactive material that has fallen into the topsoil, the topsoil of several tens of centimeters is stripped, and the stripped soil, etc. (radioactive waste 8 such as soil with radioactive material attached) is placed in the flexible container bag 2 and intermediate Until the storage facility 3 is completed, it is temporarily placed in the temporary storage area. Then, as shown in FIG. 1, the opening device 1 is installed in the completed intermediate storage facility 3, and the flexible container bag 2 containing the radioactive waste 8 is transported to the intermediate storage facility 3 by a transport vehicle 4 such as a truck. The flexible container bag 2 is opened by the opening device 1 installed in the intermediate storage facility 3, and the radioactive waste 8 stored in the flexible container bag 2 is stored in the radioactive waste storage unit 5 of the intermediate storage facility 3. To do.

  For example, as shown in FIG. 1, the unsealing device 1 includes a hoist 10, a travel guide rail 20 as a circulation movement guide means, a belt conveyor 30 as a conveyor, a water jet device 40, a hoist 10, and a belt conveyor 30. , And a control device (not shown) as a control means for controlling the water jet device 40.

The hoist 10 is a traverse hoist provided with a suspension device 11, a traverse device 12, and a control device (not shown).
The traveling guide rail 20 is configured by an I-shaped beam such as an endless I-shaped steel which is attached to a ceiling (not shown) and forms an annular path capable of circulating and guiding the hoist 10 on a horizontal plane.
The belt conveyor 30 includes a front belt conveyor 31 and a rear belt conveyor 32.
The hanging means is constituted by the hoisting device 11 of the hoist 10, and the conveying means is constituted by the traversing device 12 of the hoist 10, the traveling guide rail 20, and the belt conveyor 30.

The hoist 10 is, for example, a monorail hoist in which a rail that forms an annular path capable of circulating and guiding the hoist 10 on a horizontal plane is formed by the lower flange 21 of the I-shaped beam and the suspension device 11 is traversed.
The hoist 10 includes, for example, a hoisting machine that winds and unwinds the rope 14, a suspension device 11 that includes a hook 13 that is attached to the rope 14 to hook the flexible container bag 2, and the suspension device 11. In order to achieve this, a traverse vehicle 15 that travels on the travel guide rail 20, a traverse device 12 that includes a traverse speed reducer, a brake, and the like, and a suspension device 11 and a control device (not shown) that controls the traverse device 12 are provided. .

The water jet device 40 includes a pump 40X that generates high-pressure water, two nozzles 40A and 40B, a pipe 40Y that connects the pump and the two nozzles 40A and 40B in a communicable manner, and a control device that is not shown in the figure. The high pressure water generated by the pump 40X is jetted as a water jet from the jet nozzles 40a; 40b of the two nozzles 40A; 40B through the pipe 40Y.
The water jet is, for example, a thin water flow in which water pressurized to about 300 MPa by the pump 40X is ejected through the ejection ports 40a; 40b having a diameter of about 0.1 mm to 1 mm.

As shown in FIG. 2, the space | interval 35 between the conveyance direction termination | terminus 33 of the front | former stage belt conveyor 31 and the conveyance direction start end 34 of the back | latter stage belt conveyor 32 is set to a dimension larger than the diameter of the nozzle 40A; 40B.
As shown in FIG. 1B, the two nozzles 40 </ b>A; 40 </ b> B are installed such that the injection ports 40 a; 40 b are positioned below the conveying surfaces of the front belt conveyor 31 and the rear belt conveyor 32 and face upward. As shown in FIG. 2, the nozzles 40 </ b>A; 40 </ b> B have injection ports 40 a; 40 b between the conveyance direction end 33 of the front belt conveyor 31 and the conveyance direction start end 34 of the rear belt conveyor 32. It is comprised so that it can move on the horizontal surface along the direction orthogonal to.
One nozzle 40A has a position corresponding to one side end 30a in the width direction of the belt conveyor 30 and a center in the width direction of the belt conveyor 30 on a horizontal plane along a direction orthogonal to the conveying direction F of the conveying means in the space 35. As shown by an arrow G in FIG. 2, the water jet can be ejected upward from the ejection port 40a of the nozzle 40A while reciprocating between the position and the position corresponding to the position.
The other nozzle 40B has a position corresponding to the other side end 30b in the width direction of the belt conveyor 30 and the width of the belt conveyor 30 on the horizontal plane along the direction orthogonal to the conveying direction F of the conveying means in the space 35. As shown by an arrow H in FIG. 2, the water jet can be ejected upward from the ejection port 40b of the nozzle 40B while moving back and forth between the position corresponding to the center position in the direction.

Next, a cutting method will be described.
First, the hook 13 of the hoist 10 is hooked on the handle 2b of the flexible container bag 2 on the loading platform 6 of the transport vehicle 4 that has transported the flexible container bag 2 containing the radioactive waste 8 to the intermediate storage facility 3 (FIG. 1 ( Hanging state A) shown in b).
Then, the hoisting device 11 of the hoist 10 is operated, the flexible container bag 2 is lifted and moved to the transport surface of the front belt conveyor 31 (moving state B shown in FIG. 1B), and the flexible container bag 2 After placing the bottom surface 2a of the first container on the transport surface 31a of the front belt conveyor 31 (unloading / installation state C shown in FIG. 1B), the flexible container bag 2 is moved with the hoist 10 so that the flexible container bag 2 does not fall down. While being supported, the flexible container bag 2 is transported toward the rear belt conveyor 32 while the hoist 10 traveling speed of the hoist 10 and the transport speed of the belt conveyor 30 are made the same.
For example, when it is detected by a sensor outside the figure that the bottom surface 2a of the flexible container bag 2 has reached the conveyance direction end 33 of the front belt conveyor 31, it is shown in FIGS. 2 and 3 (a) :( b). As described above, the nozzle 40A is moved while moving the injection port 40a of one nozzle 40A from a position corresponding to one side end 30a in the width direction of the belt conveyor 30 until it reaches a position corresponding to the center position in the width direction of the belt conveyor 30. The water jet is jetted from the jet nozzle 40a, and the jet nozzle 40b of the other nozzle 40B is positioned from the position corresponding to the other side end 30b in the width direction of the belt conveyor 30 to the position corresponding to the center position in the width direction of the belt conveyor 30. The water jet is ejected from the ejection port 40b of the nozzle 40B while being moved until reaching. Thereafter, as shown in FIG. 3C, a position corresponding to one side end 30 a in the width direction of the belt conveyor 30 from a position corresponding to the center position in the width direction of the belt conveyor 30 from the injection port 40 a of one nozzle 40 </ b> A. The water jet is ejected from the ejection port 40a of the nozzle 40A while being moved until it reaches the position of the nozzle 40B. A water jet is ejected from the ejection port 40b of the nozzle 40B while being moved until it reaches a position corresponding to the other side end 30b, whereby an “x” -shaped cutting line C1; C2 is formed on the bottom surface 2a of the flexible container bag 2; , And the bottom surface 2a of the flexible container bag 2 is cut into a “x” shape.
Specifically, the flexible container bag 2 is transported from the transport surface 31a of the front belt conveyor 31 to the transport surface 32a of the rear belt conveyor 32 by the transport means, and the one nozzle 40A and the other nozzle 40B are moved toward and away from each other. The bottom surface 2a of the flexible container bag 2 is cut into an “x” shape by spraying water jets from the nozzles 40A; 40b of the nozzles 40A; 40B while moving in the direction (shown in FIG. 1B). Bottom cut state D).
That is, by adjusting the transport speed of the transport means for transporting the flexible container bag 2 and the moving speed of the two nozzles 40A and 40B by a control device (not shown), for example, transport to the bottom surface 2a of the flexible container bag 2 Two cutting lines C1; C2 that intersect the direction X at 45 ° and are orthogonal to each other, that is, “X” -shaped cutting lines are formed.
The bottom surface 2a of the flexible container bag 2 is placed on the transport surface 31a of the front belt conveyor 31 so that the center position in the width direction of the transport surface 31a of the front belt conveyor 31 coincides with the center of the bottom surface 2a of the flexible container bag 2. In this case, it is preferable because the “X mark” -shaped cutting line C1; C2 in which the center of the bottom surface 2a of the flexible container bag 2 and the center of the X mark coincide can be formed.
After the cutting, the flexible container bag 2 is transported beyond the end 32E of the rear belt conveyor 32 and is suspended in the air by the hoisting device 11 of the hoist 10 (the bottom opening shown in FIG. 1B). In state E), the bottom 2a of the cut flexible container bag 2 is opened by the weight of the radioactive waste 8 (contained object), and the radioactive waste 8 falls into the radioactive waste storage section 5 below. .
During and after cutting of the bottom surface 2a of the flexible container bag 2, the bottom surface 2a of the flexible container bag 2 is placed on the transport surface 31a; 32a of the belt conveyor 30, and the cutting line Since the width of C1; C2 is as thin as about 0.1 mm to 1 mm, the bottom surface 2 a of the flexible container bag 2 is not opened (bottom omission) until the flexible container bag 2 exceeds the end 32 E of the rear belt conveyor 32.
And the used flexible container bag 2 cut | disconnected is open | released from the hook 13, is dropped to the collection | recovery part 7, and is collect | recovered (the flexible container bag open state F shown in FIG.1 (b)). In this case, if a grip-type hook is used as the hook 13, the flexible container bag 2 can be dropped by releasing the state in which the control device (not shown) is holding the flexible container bag 2 with the hook. . Further, even when a hook-shaped hook as shown in FIG. 1 is used as the hook 13, a hook-shaped hook having a structure capable of opening the flexible container bag 2 by a control device outside the figure is used. Thus, the flexible container bag 2 can be dropped.
Thereafter, the rope 14 of the hoist 10 is pulled up to set the hoist 10 to the initial state (the hoist initial state G shown in FIG. 1B), and then the hoist 10 is circulated to the position of the transport vehicle 4 (FIG. 1). State (H) in which the hoist shown in (b) is circulated), the next flexible container bag 2 is opened or the opening process is terminated.

According to the opening method according to the first embodiment, the bottom surface 2a of the flexible container bag 2 containing the radioactive waste 8 is cut from the outside of the flexible container bag 2 with a water jet to open the bottom surface 2a of the flexible container bag 2. Since the radioactive waste 8 accommodated in the flexible container bag 2 and the nozzles 40A and 40B are not in contact with each other, the bottom surface 2a of the flexible container bag 2 is cut off without causing a fire. And the opening method excellent in work efficiency can be provided.
In addition, the flexible container bag 2 containing the radioactive waste 8 is suspended by the hoist 10 provided with the suspension device 11 and the traversing device 12, and the bottom surface 2 a of the flexible container bag 2 is conveyed on the transport surface 31 a of the front belt conveyor 31. The flexible container bag 2 is transported by the traversing device 12 and the front belt conveyor 31 and placed between the front belt conveyor 31 and the rear belt conveyor 32 provided at intervals along the transport direction. When the nozzle 40A; 40B of the water jet device 40 is disposed and the bottom surface 2a of the flexible container bag 2 containing the radioactive waste 8 passes between the front belt conveyor 31 and the rear belt conveyor 32, the nozzle 40A; Water jet from 40B injection port 40a; 40b The bottom surface 2a of the flexible container bag 2 was cut from the outside of the flexible container bag 2, and the flexible container bag 2 was suspended in the air by the lifting device 11 of the hoist 10 beyond the end 32E of the rear belt conveyor 32. In this state, the bottom surface 2a of the cut flexible container bag 2 is opened by the weight of the radioactive waste 8 so that the radioactive waste 8 falls, so that the radioactive waste 8 is accommodated. The cutting operation of the bottom surface 2a of the flexible container bag 2 and the opening operation of the cut bottom surface 2a of the flexible container bag 2 can be automated. Then, by realizing the automation, it becomes possible to realize an unsealing method that is not easily affected by the radioactive waste 8.
Further, the “×” -shaped cutting line C1; C2 is formed on the bottom surface 2a of the flexible container bag 2 by a single cutting step of adjusting the conveying speed of the conveying means and the moving speed of the two nozzles 40A; 40B. Therefore, the cutting process can be minimized and an unsealing method with a small number of processes can be realized.

The nozzles 40 </ b> A and 40 </ b> B are disposed at positions corresponding to one side end 30 a in the width direction of the belt conveyor 30 on the horizontal plane along the direction orthogonal to the conveying direction F of the conveying means in the space 35. A cutting line is formed on the bottom surface 2a of the flexible container bag 2 by injecting the water jet upward from the injection port 40a; 40b while moving between the position corresponding to the other side end 30b in the width direction You may make it do. In this way, it is possible to reliably form at least two cutting lines that intersect the bottom surface 2a of the flexible container bag 2, and the opening operation becomes smooth.
Further, in the first embodiment, it is not always necessary to form the “x” -shaped cutting line on the bottom surface 2a of the flexible container bag 2, and by setting the moving speeds of the two nozzles 40A; By forming the cutting lines C11; C21 as shown in FIG. 3 (d), or by setting the moving speed of the two nozzles 40A; 40B faster, the number of cutting lines as shown in FIG. The cutting lines C12 and C22 that can increase the number of places where the cutting lines are provided may be formed. If a cutting line that can increase the number of cutting lines and the locations where the cutting lines are provided, such as the cutting lines C12 and C22, the opening operation becomes smoother.

Embodiment 2
The hoist 10, the travel guide rail 20 as the circulation movement guide means, the belt conveyor 30A as the conveyor, the water jet device 40D, and the control means for controlling the hoist 10, the belt conveyor 30A and the water jet device 40D are not shown. The opening method using the opening device of the structure provided with this control apparatus may be sufficient.

The hoist 10 and the travel guide rail 20 are the same as those described in the first embodiment.
As shown in FIG. 4, the belt conveyor 30 </ b> A includes a front belt conveyor 31, a rear belt conveyor 32, and an intermediate belt conveyor 36 installed between the front belt conveyor 31 and the rear belt conveyor 32. is there.

The water jet device 40D includes a pump 40X that generates high-pressure water, a Y-direction cutting nozzle 41A, an X-direction Z-direction cutting nozzle 42A, and a pipe 40Y1 that connects the pump 40X and the Y-direction cutting nozzle 41A so as to communicate with each other. And a pipe 40Y2 that connects the pump 40X and the X-direction Z-direction cutting nozzle 42A so that they can communicate with each other, and a control device (not shown), and the high-pressure water generated by the pump 40X passes through the pipe 40Y1 to the Y-direction cutting nozzle 41A. This is a device for injecting the high pressure water generated by the pump 40X as a water jet from the injection port 42a of the nozzle 42A for cutting in the X direction and Z direction through the pipe 40Y2.
That is, the water jet device 40D is different from the water jet device 40 of the first embodiment in that the water jet device 40D includes a Y direction cutting nozzle 41A and an X direction Z direction cutting nozzle 42A. The same as the water jet device 40 of No. 1.
The X direction is a direction along the conveying direction of the belt conveyor 30A on the horizontal plane, the Y direction is a direction orthogonal to the X direction on the horizontal plane, and the Z direction is the X direction and the Y direction. The direction is orthogonal, that is, the vertical direction.

  As shown in FIG. 4, the distance 35a between the conveyance direction end 33 of the front belt conveyor 31 and the conveyance direction start end 36a of the intermediate belt conveyor 36 is set to a dimension larger than the diameter of the Y-direction cutting nozzle 41A. At the same time, the distance 35b between the conveyance direction end 36E of the intermediate belt conveyor 36 and the conveyance direction start end 34 of the rear belt conveyor 32 is set to be larger than the diameter of the X-direction Z-direction cutting nozzle 42A.

  The nozzle 41A for cutting in the Y direction is installed such that the injection port 41a is positioned below the conveying surfaces 31a; It is configured to be movable along the Y direction in a space 35 a between the conveyance direction end 33 of the conveyor 31 and the conveyance direction start end 36 a of the intermediate belt conveyor 36.

The X-direction and Z-direction cutting nozzles 42 </ b> A are configured to convey the intermediate belt conveyor 36 and the rear belt conveyor 32 at the injection port 42 a 35 b between the conveyance direction end 36 </ b> E of the intermediate belt conveyor 36 and the conveyance direction start end 34 of the rear belt conveyor 32. The injection port 42a faces upward in a state where it is provided so as to be vertically movable below the surface 36c; 32a and above the transport surface 36c; 32a, and is positioned below the transport surface. In addition to being set to a state, it is configured by an expansion / contraction rotary nozzle that is set so that the injection port 42a faces the front (front belt conveyor 31 side) in a state positioned above the transport surface 36c; 32a ( (See FIG. 7).
Note that only one X-direction and Z-direction cutting nozzle 42A may be provided in a space 35b between the conveyance direction end 36E of the intermediate belt conveyor 36 and the conveyance direction start end 34 of the rear belt conveyor 32, or FIG. As shown in FIG. 5, a plurality of the belts 35 may be provided at predetermined intervals along the Y direction at a distance 35b between the conveyance direction end 36E of the intermediate belt conveyor 36 and the conveyance direction start end 34 of the rear belt conveyor 32. When only one X-direction and Z-direction cutting nozzle 42A is provided, the intermediate belt conveyor 36 and the rear belt conveyor 32 are located 35b between the conveyance direction end 36E of the intermediate belt conveyor 36 and the conveyance direction start end 34 of the rear belt conveyor 32. If it is provided at the center position in the width direction or near the center position in the width direction, the center of the bottom surface 2a of the flexible container bag 2 or a cutting line passing through the vicinity of the center can be formed.

Next, a cutting method will be described.
After the bottom surface 2a of the flexible container bag 2 is placed on the transport surface 31a of the front belt conveyor 31, the process is the same as in the first embodiment until the flexible container bag 2 is transported toward the rear belt conveyor 32 side.
Then, for example, when a sensor (not shown) detects that the bottom surface 2a of the flexible container bag 2 has reached 35a between the conveyance direction end 33 of the front belt conveyor 31 and the conveyance direction start end 36a of the intermediate belt conveyor 36 (see FIG. When the flexible container bag 2 shown in FIG. 4 is in the a state), after stopping the traverse device 12 of the hoist 10 and the belt conveyor 30A, the nozzle 41A for cutting in the Y direction is moved along the Y direction while A water jet is jetted from the bottom to cut the bottom surface 2a of the flexible container bag 2 along the Y direction. Thereby, as shown to Fig.5 (a), the cutting line C4 which follows the Y direction at the bottom face 2a of the flexible container bag 2 is formed.
At this time, it is shown that the center of the bottom surface 2a of the flexible container bag 2 or the vicinity of the center has reached 35a between the conveyance direction end 33 of the front belt conveyor 31 and the conveyance direction start end 36a of the intermediate belt conveyor 36. It is preferable to form the cutting line C4 passing through the center of the bottom surface 2a of the flexible container bag 2 or the vicinity of the center so as to be detected by an outside sensor.
After the cutting in the Y direction is completed, the traveling speed of the hoist 10 by the traverse device 12 of the hoist 10 and the transport speed of the belt conveyor 30A are made the same, and the flexible container bag 2 is transported toward the rear belt conveyor 32 side. When it is detected by a sensor (not shown) that the bottom surface 2a of the container bag 2 has reached the end 36E of the conveying surface 36c of the intermediate belt conveyor 36, the traverse device 12 of the hoist 10 and the intermediate belt conveyor 36 are stopped, and the flexible container The bag 2 is stopped as shown in the state c of FIG.
Thereafter, as shown in FIG. 7 (a), the nozzle 42A for cutting in the X direction and the Z direction is moved above the conveying surfaces 36c; 32a of the intermediate belt conveyor 36 and the rear belt conveyor 32, and the injection port 42a faces forward. After the setting, as shown in FIG. 7A; FIG. 7B, the water jet 40Z is ejected from the ejection port 42a while moving the nozzle 42A downward, and the lower side of the flexible container bag 2 A cutting line C5 that reaches the bottom surface 2a along the side surface 2s is formed, and the lower side surface 2s is cut in the Z direction.
After that, as shown in FIG. 7C, the injection port 42a is set so that the injection port 42a faces upward and is positioned below the transport surfaces 36c; 32a of the intermediate belt conveyor 36 and the rear belt conveyor 32. .
Then, as shown in FIG. 7 (d), the flexible container bag 2 is conveyed toward the rear belt conveyor 32 with the traveling speed of the hoist 10 by the traverse device 12 of the hoist 10 and the conveying speed of the belt conveyor 30A being the same. Meanwhile, the water jet 40Z is jetted from the jet port 42a to form a cutting line C6 along the X direction on the bottom surface 2a of the flexible container bag 2, and the bottom surface 2a of the flexible container bag 2 is cut in the X direction.
As described above, a continuous cutting line C4 along the Y direction is formed on the bottom surface 2a of the flexible container bag 2, and a continuous cutting line in the X direction in the Z direction is continuous with the lower side surface 2s and the bottom surface 2a of the flexible container bag 2. C5; C6 is formed.
FIG. 5B shows a cutting line C4 formed on the bottom surface 2a and a plurality of X-direction and Z-direction cuttings shown in FIG. 6 in the d state after the cutting of the flexible container bag 2 shown in FIG. A plurality of cutting lines C6 formed by the nozzle 42A are shown.
After the end of cutting, it is the same as in the first embodiment.

According to Embodiment 2, the cutting line C5 reaching the bottom surface 2a along the Z direction is formed on the lower side surface 2s of the flexible container bag 2, and the lower side surface 2s is cut in the Z direction. While being excellent in safety and work efficiency, the cutting operation of the bottom surface 2a of the flexible container bag 2 containing the radioactive waste 8 and the opening operation of the bottom surface 2a of the cut flexible container bag 2 can be automated. Furthermore, the opening operation becomes smooth.
If the plurality of cutting lines C5; C6 are formed by the plurality of X-direction and Z-direction cutting nozzles 42A shown in FIG. 6, the opening operation becomes smoother.

Embodiment 3
In the second embodiment, the cutting line C5 is formed in the Z direction. However, in the second embodiment, only the bottom surface 2a of the flexible container bag 2 may be cut by forming the cutting lines C4;
According to the third embodiment, a “cross-shaped” cutting line C4; C6 on the bottom surface 2a of the flexible container bag 2, or one cutting line C4 and a plurality of cutting lines C6 as shown in FIG. Since the bottom surface 2a of the flexible container bag 2 can be cut, the safety and work efficiency are excellent, and the cutting operation and cutting of the bottom surface 2a of the flexible container bag 2 containing the radioactive waste 8 are performed. The opening operation of the bottom surface 2a of the flexible container bag 2 thus made can be automated.

Embodiment 4
Opening comprising a hoist equipped with a device for rotating the suspended flexible container bag in the vertical direction about the center line of the flexible container bag, a belt conveyor, and a nozzle provided on the side of the belt conveyor Using the device, rotate the flexible container bag suspended by the hoist and placed on the conveyor surface of the belt conveyor around the center line of the flexible container bag as the center of rotation. By spraying a water jet on the outer peripheral surface, an annular cutting line is formed on the lower outer peripheral surface of the flexible container bag, and after cutting, the flexible container bag is moved into the air above the radioactive waste storage unit by means of transport. Of the bag being cut The side portions may be caused to fall together with the contained object in the weight of the contained object.

A roller conveyor may be used as the conveyor.
Moreover, what is necessary is just to circulate the hoist 10 one or more.
Moreover, the bag should just be a bag formed with the material which can be cut | disconnected with a water jet.
In addition, the items to be stored in the bag are other than radioactive waste, for example, industrial waste such as metallic waste, wood waste, stone waste, powder waste, fluid waste, etc. There is no particular limitation.

In the method of the present invention, after the bag containing the objects to be stored is suspended by a hoist equipped with a suspension device and a traversing device, the bottom surface of the bag is placed on the transport surface of the conveyor, and then the traversing device, the conveyor, The bag is transported by the water jet nozzle between the one conveyor and the other conveyor provided at intervals along the transport direction, and the bottom surface of the bag containing the objects to be stored is one side. After passing between the other conveyor and the other conveyor, a water jet is sprayed from the nozzle outlet and the bottom of the bag is cut from the outside of the bag (ie, the bag is stopped between the conveyor and the conveyor). After the bottom surface is cut or the bottom surface is cut while moving the bag), the bag is cut when it is suspended in the air by the hoist suspension device over the conveyor And opening the bottom of the weight of the contained object may be such that the contained object from falling.
For example, it is preferable to form two cutting lines that intersect at least the bottom surface of the bag so that the bottom surface of the bag is opened (bottomed out) by the weight of the object to be contained. In this case, it is preferable to form at least two cutting lines that intersect at or near the center of the bottom surface of the bag.
Further, in the method of the present invention, the side and bottom surfaces of the bag are cut as in Embodiment 2 so that the bottom side of the bag is opened (bottom-out) by the weight of the object to be stored, What is necessary is just to form the cyclic | annular cutting line centering on the centerline of the bag extended like 4 to the up-down direction.

1 opening device, 2 flexible container bag (bag),
2a bottom surface of flexible container bag, 10 hoist, 11 lifting device,
12 traverse device, 30 belt conveyor (conveyor),
31 Pre-stage belt conveyor (one conveyor),
32 Subsequent belt conveyor (the other conveyor), 31a; 32a conveying surface,
40 Water jet device, 40A; 40B, nozzle, 40a;

Claims (2)

  A method of opening a bag containing an object to be stored, wherein the bag containing the object to be stored is cut from the outside of the bag with a water jet to open the bag.   After the bag containing the objects to be stored is moved by a hoist equipped with a suspension device and a traversing device and the bottom surface of the bag is placed on the transport surface of the conveyor, the bag is transported by the traversing device and the conveyor, and the transport direction The nozzles of the water jet device are arranged between one conveyor and the other conveyor, which are spaced apart from each other, so that the bottoms of the bags containing the objects to be stored are located between the one conveyor and the other conveyor. When passing between, the water jet is ejected from the nozzle outlet and the bottom of the bag is cut from the outside of the bag, and then the bag goes over the conveyor and is suspended in the air by the hoist suspension device. A method for opening a bag containing an object to be stored, wherein the bottom of the bag being cut is opened by the weight of the object to be stored and the object to be dropped falls.

Images