JPH0216877Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention is a waste filter unit volume reduction device that compresses and reduces the volume of used filter units contaminated with radioactive materials, for example, in order to store them. It is related to.

``Prior Art'' Filter units are often used in general industry, nuclear power industry, etc. to purify radioactive gases. These filter units are replaced at regular intervals, and the expropriated filters are stored after being reduced in volume (hereinafter referred to as volume reduction) using strict processing means to prevent the scattering of radioactive materials.

FIGS. 7 and 8 show an example of a filter unit widely used in the nuclear industry and the like. This filter unit 1 consists of a rectangular parallelepiped wooden frame 2, end plates 3, 3 that close openings at both ends of the frame 2, and a filter media 4 provided within the frame 2. are provided with pipe adapters 5, 5, respectively.

Conventionally, such processing of filter media has been carried out in an airtightly partitioned food box as follows. First, the end plates 3 are cut off from the frame 2 using a circular saw or the like. Next, a filter medium 4 is punched out from the frame 2.
This punched filter media 4 is compressed and reduced in volume using a press device. On the other hand, insert your hand into a rubber glove attached to the side wall of the food box and operate the jigsaw to cut and divide the frame 2 as shown by the two-dot chain line in FIG.

``Problem that the invention attempts to solve'' In this way, conventionally, the volume of frame 2 of the filter unit was reduced by cutting and dividing it using a jigsaw inside the food box. In addition to requiring time and effort, the process was also unsafe.

``Means for Solving the Problems'' Therefore, in the present invention, the waste filter unit volume reduction device is provided with a pedestal for receiving one side of the frame of the filter unit, and a position facing the pedestal. The above problem has been solved by providing a frame dismantling device comprising an actuator mechanism that extends toward the pedestal.

``Function'' With the waste filter unit volume reduction device configured as described above, the frame can be dismantled by placing one side of the frame of the filter unit against the pedestal of the frame dismantling device and extending the actuator mechanism. can.

Embodiments Hereinafter, the waste filter unit volume reduction device of the present invention will be described in detail with reference to the drawings.

1 to 3 show a first embodiment of the waste filter unit volume reduction device of the present invention,
Reference numeral 10 in the figure is a food box. Inside this food box 10, there are a conveyor 11, a cutting device 12, a media compression device 13, and a frame dismantling device 14.
is provided.

The food box 10 isolates the inside of the box from the outside air so that the radioactive substances in the filter unit 1 to be processed do not leak outside.
The filter unit 1 to be processed is inserted through the inlet 10a.

The conveyor 11 conveys the filter unit 1 placed in the food box 10 to a media compression device 13, a frame dismantling device 14, etc. In this example, a chain conveyor is used. The width of the two chains forming this conveyor 11 is slightly narrower than the width of the frame 2 of the filter unit 1 to be processed.

The frame dismantling device 14 has a filter unit 1
This is to dismantle frame 2. This frame dismantling device 1
4 is provided beside the center of the conveyor 11. The frame dismantling device 14 includes a pedestal 15 that receives one side of the frame 2, and an actuator mechanism 16 provided at a position facing the pedestal 15. Pedestal 15 of frame dismantling device 14 in this example
is formed from a receiving part 18 having a substantially V-shaped cross section and having a groove 17 into which the corner of the frame 2 of the filter unit 1 is fitted, and a plate-shaped seat plate 19 supporting this receiving part 18.

The actuator mechanism 16 is mounted on the pedestal 15.
A pressing member 22 having a substantially V-shaped cross section and a groove 21 having a shape substantially equal to the corner of the frame 2 is attached to the tip of the piston 20 .

The floor on which the frame dismantling device 14 is provided is provided with holes 24, 24 for feeding the dismantled frame 2 into the drum cans 23. This hole 24,2
4 is provided at a position closer to the wall of the food box 10 than the frame dismantling device 14.

The cutting device 12 is provided at a position closer to the entrance 10a of the food box 10 than the frame dismantling device 14. This cutting device 12 simultaneously cuts off the two end plates 3, 3 of the filter unit 1 transported by the conveyor 11 from the frame 2.
This cutting device 12 has two band saws 25, 25, and these band saws 25, 25 are provided on both sides of the conveyor 11 so as to intersect with the mounting surface 11a of the conveyor 11. ing. The interval between the cut portions of the band saws 25, 25 is set approximately equal to the interval between the end plates 3, 3 of the filter unit 1.

The media compression device 13 is provided at the back of the food box 10. This media compression device 13 punches and presses the media 4 in the filter unit 1 to compress it. This media compression device 13 is composed of a lifting device 26 and a press device 27.

The lifting device 26 lifts the filter unit 1 from which the end plates 3, 3 have been removed, which has been transported by the conveyor 11, to a predetermined position. It is composed of a vertical movement cylinder 29 that raises and lowers the gripping mechanism 28, and a frame portion 30 that guides the movement of the gripping mechanism 28. Frame part 30
is provided so as to be movable in the horizontal direction intersecting the conveyance direction of the conveyor 11. In addition, the gripping mechanism 2
8 is provided with a vibration device 31 that strikes the gripped filter unit 1 to give it vibration.

As shown in FIG. 2, the press device 27 includes a punching mechanism 32 equipped with a punching press 32a that punches out the filter media 4 from the frame 2 of the filter unit 1, and a punching mechanism 32 that punches out the filter media 4 from the frame 2 of the filter unit 1.
A primary press mechanism 34 has a primary press chamber 33 for accommodating filter media 4 in a predetermined direction, and compresses the filter media 4 accommodated in the primary press chamber 33 in a predetermined horizontal direction; a secondary press mechanism 36 that has a press chamber 35 and compresses the filter media in a substantially horizontal direction perpendicular to the compression direction of the primary press mechanism 34; and a secondary press mechanism 36 that communicates with the secondary press chamber 35 and has an opening/closing plate mechanism in its intermediate portion. It is comprised of a tertiary press mechanism 39 which has a tertiary press chamber 38 which can be opened and closed at 37, and which compresses and sends out the filter media 4 in the vertical direction. Additionally, a third
As shown in the figure, a radioactive substance recovery mechanism 40 is provided.

Next, the operation of processing a used filter unit by this waste filter unit volume reduction device will be explained.

First, the filter unit 1 is put into the food box 10 through the entrance 10a and placed on the conveyor 11. At this time, the filter unit 1 is placed so that the end plates 3, 3 are parallel to the conveying direction of the conveyor 11. Next, the conveyor 11 is operated in the forward direction. The filter unit 1 is conveyed by a conveyor 11 and passes through a cutting device 12. In this case, the end plates 3, 3 of the filter unit 1 are cut off from the frame 2 by the band saws 25, 25 of the cutting device 12. The separated end plates 3, 3 are bundled by a hand inserted through a rubber glove (not shown) provided in the food box 10, and placed in a predetermined container. After passing through the cutting device 12, the filter unit 1 is left with only the frame 2 and the filter media 4 accommodated in the frame 2.

Next, the filter unit 1 from which the end plates 3, 3 have been removed is conveyed to a media compression device 13 by a conveyor 11. During this time, the filter unit 1 is laid down so that both openings face vertically. The filter unit 1 conveyed to the media compression device 13 is gripped by the gripping mechanism 28 of the lifting device 26. It is raised to the height of the radioactive material recovery mechanism 40, and then positioned at the opening of the recovery mechanism 40 by moving the frame portion 30. After this, the vibration device 3 of the gripping mechanism 28
1, the filter unit 1 is vibrated, and the radioactive substances collected on the filter medium 4 are sieved off by the collection mechanism 40.

Next, the filter unit 1 is sent to the punching mechanism 32 by the movement of the frame portion 30 and the operation of the vertical cylinder 29. In this punching mechanism 32, the media 4 of the filter unit 1 is punched out from the frame 2 by a punching press 32a. This punched filter medium 4 falls into the primary press chamber 33 of the press device 27.

The filter media 4 dropped into this primary press chamber 33 are transferred to the primary, secondary, and tertiary press mechanisms 3.
4, 36, and 39 are sequentially compressed. After a predetermined number of compressed filter media 4 are stored in the tertiary press chamber 38, they are stored in the drum can 41 by opening the opening/closing plate mechanism 37.

On the other hand, the frame 2 with the filter media 4 punched out is placed on the conveyor 11 again by the lifting device 26. The placed frame 2 is transferred to the conveyor 11
by moving the frame dismantling device 14 in the opposite direction.
transported before. The frame 2 transported in front of the frame dismantling device 14 is placed on the pedestal of the frame dismantling device 14 by a hand inserted through a rubber glove (not shown) provided in the food box 10, as shown in FIG. 15. After this, when the actuator mechanism 16 of the frame dismantling device 14 is extended, the frame 2
is crushed and dismantled from its corners, as shown in Figure 5. As shown in FIG. 6, the disassembled frames 2 are bundled in several pieces and then stored in a drum can 23 through a hole 24 made in the floor.

"Effects of the Invention" As explained above, the waste filter unit volume reduction device of the present invention includes a pedestal that receives one side of the frame of the filter unit, and a pedestal that is provided at a position facing the pedestal and faces toward the pedestal. Since the frame dismantling device is provided with an actuator mechanism that extends, the frame of the filter unit can be easily dismantled in an extremely short period of time. Furthermore, since the frame dismantling device has no sharp parts, there is no risk of damaging rubber gloves or the like provided on the food box. Therefore, according to the waste filter unit volume reduction apparatus of the present invention, it is possible to reduce the labor required for filter unit volume reduction processing, and at the same time, it is possible to improve the safety of the volume reduction processing work and the processing efficiency.

[Brief explanation of the drawing]

Fig. 1 is a schematic block diagram showing an embodiment of the waste filter unit volume reduction device of the present invention, Fig. 2 is a schematic block diagram showing the media compression device portion of the same embodiment, and Fig. 3 is a schematic block diagram showing the media compression device portion of the same embodiment. A schematic configuration diagram showing the radioactive material recovery mechanism, FIGS. 4 and 5 are front views showing the operation of the frame dismantling device of the same embodiment, and FIG. 6 is a packaged state of the frame dismantled by the same frame dismantling device. Figure 7 is a side view of the filter unit.
FIG. 8 is a front view of the same filter unit, and FIG. 9 is a perspective view for explaining a conventional method of disassembling the frame. 1... Filter unit, 2... Frame, 3...
End plate, 4... Filter media, 10... Food box, 11... Conveyor, 12... Cutting device, 13... Media compression device, 14... Frame dismantling device, 15... Pedestal, 16... Actuator mechanism .

Claims (1)

[Scope of claim for utility model registration] A conveyor that conveys the filter unit,
A cutting device that separates the end plate of a filter unit, a media compression device that punches and presses the filter media in the filter unit, a frame dismantling device that disassembles the frame of the filter media, and a food box that houses these devices. The frame dismantling device is characterized by comprising a pedestal that receives one side of the frame of the filter unit, and an actuator mechanism that is provided at a position facing the pedestal and extends toward the pedestal. Waste filter unit volume reduction device.