JPH0123190B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a filter volume reduction processing device, which is comprised of an internal filter material with special compressive elasticity and a rectangular metal frame. This invention relates to a filter volume reduction processing device suitable for reducing the amount of water.

[Prior art]

Generally, in a nuclear power plant, a ventilation system is installed inside the power plant building to protect workers from dust, etc., and this keeps the room in a clean atmosphere at all times. An exhaust filter is installed in the section to prevent air pollution. Therefore, air pollution is prevented by replacing the exhaust filter at regular intervals. By the way, the filters replaced in this way can be individually packaged in vinyl, or the filter can be separated into compressible elastic inner filter material and a metal frame, the outer frame crushed, and then packed in a solid drum. Currently, both are stored in waste storage facilities. Therefore, since the inner filter material is bulky due to its compressive elasticity, the drum quickly becomes full, which poses a problem from the viewpoint of filter volume reduction. Furthermore, at present, most of these tasks are performed with human intervention. On the other hand, when a used filter that has been replaced at a nuclear power plant or the like is crushed, contaminants and the like are inevitably scattered into the surrounding area. Therefore, the environment for the crushing work tends to deteriorate. Incidentally, in recent years, attempts have been made to automate the work of handling contaminated materials, dangerous materials, etc. from the viewpoint of energy conservation and safety. For example, although similar equipment (or equipment) (Japanese Unexamined Patent Publication No. 148299/1983) can be found here and there as an elemental technology, no equipment has been provided that automates the integrated process of compressing, reducing volume, packaging, and sealing filters. Nakatsuta.

[Purpose of the invention]

The present invention has been made in view of the above problems,
The purpose is to provide a filter volume reduction processing apparatus that can consistently perform filter volume reduction processing, save labor, and maintain a good working environment.

[Summary of the invention]

In order to achieve the above object, the present invention provides a carrying means for carrying in and placing a filter made of a compressively elastic internal filter material and a rectangular metal frame in a predetermined position, and a carrying means for carrying in and placing a filter by the carrying means. a compression means for compressing and destroying the compressed filter, a carrying-out means for storing the filter compressed and destroyed by the compression means in a storage container, sealing the storage container, and carrying it out; control means for reducing the volume of the filter by controlling the filter, wherein the compression means includes lateral compression means for compressing the filter placed by the carry-in means from the lateral direction; and a vertical compression means for compressing the filter from the vertical direction, and the horizontal compression means is a wedge-shaped member that folds inward four sides of the rectangular metal frame of the filter placed by the carrying means. a jig, and a pushing jig for pushing inward each corner of the metal frame of the filter,
The vertical compression means has a pedestal on which the filter is placed by the carrying-in means, an outer periphery that is substantially the same as the outer periphery of the filter placed on the pedestal, and a surface facing the filter. and a compression jig having a groove around the periphery.

[Embodiments of the invention]

Hereinafter, preferred embodiments of the present invention will be described based on the drawings.

FIG. 1 is a basic configuration diagram showing an embodiment of a filter volume reduction processing apparatus according to the present invention. In FIG. 1, reference numeral 1 indicates a filter volume reduction processing device, and the filter volume reduction processing device 1 is installed in a negative pressure chamber 2, and the negative pressure chamber 2 is connected to a negative pressure maintenance device 3. There is. The filter volume reduction processing apparatus 1 includes a feed conveyor 60 that opens the entrance door 20, carries the filter 5 transferred on the transfer conveyor 4A into the negative pressure chamber 2, and places it on a predetermined position on the pedestal 71. a compression means 7 for compressing and destroying the filter 5 placed on a pedestal 71 by the loading means 6, and a filter 5' compressed and destroyed by the compression means 7. A carrying-out means 9 for storing the container 8, sealing the container 8, opening the exit door 21, and transporting the negative pressure chamber 2 to the conveyor 4B outside the negative pressure chamber 2, and each of the means 6, 7, and 9. and a control device 10 that controls the decontamination device 11 using a detection signal from a contamination measurement monitor 12.

Filter volume reduction processing device 1 configured as described above
Each component etc. will be further explained below.

In FIG. 1, reference numeral 100 is a detection means for detecting that the filter 5 is present on the transfer conveyor 4A and outputting a detected presence signal S100;
01 is a position detecting means that detects that the filter 5 is placed at a predetermined position on the pedestal 71 and outputs a detected position signal S101. Further, 102 is a detection means that detects that a predetermined amount of volume-reduced filters 5' are accommodated in the container 8 and outputs a detection signal S102. These detection means 100 to 102
The detection signals S100 to S102 from the control means 10 are electrically connected to be taken into the control means 10.

The compression means 7 includes a vertical compression means 72 for vertically compressing and breaking the filter 5 placed on the pedestal 71 by the carrying means 6, and a vertical compression means 72 for compressing and destroying the filter 5 on the pedestal 71 from the lateral direction. and a lateral compression means 76 for compressive destruction.

In other words, the longitudinal compression means 72 includes the pedestal 71 and
It is configured to include a filter compression jig 74 and a filter press ring 75, each of which is fixed to the sliding shafts of cylinders 72 and 73 provided in the upper part of the drawing, and is movable up and down in the drawing. Further, the lateral compression means 76 includes a cylinder 77 that is fixed to a sliding shaft of a cylinder 78 and is movable up and down as shown in the figure.
The jig 79 is fixed to the sliding shaft of the cylinder 78 and is capable of reciprocating in the lateral direction in the figure.

Furthermore, the carrying-out means 9 stores the filter 5' compressed by the compression means 7 in the container 8, and stores the filter 5' compressed by the compression means 7 in the container 8.
It consists of a gripping and sealing means 90 that seals the container 8 when a certain amount is reached, and a conveyor 92 as a carrying means that carries out the container 8 sealed by this means 91.

The operation of the embodiment of the filter volume reduction processing apparatus constructed with such components will be described below with reference to FIGS. 2 to 4.

In the figure, the exhaust filter 5 is connected to the inlet conveyor 4.
Transported by A. When this filter 5 is detected by the detection means 100, a presence signal S100 is output from the detection means 100, and this and the operation signals of each device of the processing device 1 are taken into the control means 10,
Output signal S2 to open the entrance door 20 if operational
00 is issued from the control means 10 and the door 20 is opened. Then, the filter 5 is pushed into the negative pressure chamber 2 by a pushing means (not shown). The filter 5 is operated by a carry-in means 6 in the processing apparatus 1, for example, a feed conveyor 60, and when it is placed at a predetermined position on a compression pedestal 71, the control means 10 is activated by a position detection signal S101 from a detection means 101. It is stopped by stopping the feed conveyor 60. Since it is known from the detection signal S101 that the filter 5 is placed at a fixed position on the compression pedestal 71,
The control means 10 outputs an output signal S as shown in the second diagram.
105, the sliding shaft of the cylinder 77 is first lowered to vertically move the filter compression jigs 78 and 79 to their home positions. After that, the control means 10 outputs an output signal S104, and the compression jig 7
By driving the filter 9, the filter 5 is compressed from multiple directions until the maximum diagonal dimension of the filter 5 reaches a predetermined size. In response to the compression end signal S203, the compression jig 79 is returned to its original position, and the cylinder 77 is
returns the compression jig 79 and cylinder 78 to their normal positions. When the cylinder 77 returns to its home position, a home position signal S202 is output.

Next, as shown in FIG. 3, the control means 10:
Lowering filter press ring 75 instruction signal S10
7, the cylinder 73 is slid to be lowered. Naturally, the press ring 75 covers the filter 5 compressed by the compression jig 79. Thereafter, the filter compression jig 74 compresses the film in a direction perpendicular to the direction compressed by the compression jig 79.

When the compression completion signal S106 to a predetermined dimension is output, the control means 10 first starts returning the filter press ring 75 to the normal position by the signal S204, removes the tight state of the outer periphery of the filter into the ring 75, and then returns the filter press ring 75 to the normal position by the signal S205. The compression jig 74 is controlled to be returned to the normal position (FIG. 3).

The filter 5 on the compression pedestal 71 that has completed compression volume reduction receives the predetermined position return signal S202 of each compression jig.
Control means 1 by S203, S204, S205
0 controls the gripping and sealing means 9, and by means of this means 9, the containers 8 are stored in a stacked state (FIG. 4).

The above-described steps (operations) are repeated until the amount in the container 8 reaches a predetermined amount. The contents of the container 8 are determined by detecting the overall weight or the height of the stacked filters by the detection means 102;
The container is sealed by the container sealing means 91 in response to the signal S102 indicating that the predetermined amount has been reached.

The sealed container 8' is decontaminated by the decontamination start signal S201.
The control means 10 operates the decontamination device 11, and the decontamination device 11 decontaminates the outer surface of the container. In response to the completion signal S103, the control means 10 drives the conveyor 92 to transfer the container 8' to the contamination monitor 12.
Move to the position. Here, if contamination is detected, the control means 10 controls the conveyor 92 to return to the decontamination device 11 again for decontamination. The good signal S103 of the contamination monitor 12 is transmitted to the control means 10.
As a result, the exit door 21 is opened by the opening/closing signal S208, and the waste is carried out as a waste container by the carry-out conveyor 4B.

In addition, when compressing with the compression jigs 74 and 79,
Although there is a risk that contaminants and the like may be scattered, the volume reduction treatment device 1 is installed in a negative pressure chamber 2, and moreover, the negative pressure maintenance device of the fan blower function is connected to the negative pressure chamber 2 through a passage 30 provided at a predetermined location. Needless to say, since it is connected to 3 and is suctioned with negative pressure, it is possible to prevent it from spreading to the surrounding area.

FIG. 5 is a perspective view showing a specific example of the lateral compression means used in the filter volume reduction processing apparatus according to the present invention.

In FIG. 5, wedge-shaped jigs 79A are disposed on the outer periphery of the metal frame 51 of the rectangular filter 5 so as to be in contact with approximately the center of each side thereof, and a wedge-shaped jig 79A is provided at each corner thereof. A pushing jig 79B is arranged so as to be in contact with it. These jigs 79A and 79B are fixed to the sliding shafts of cylinders 78A and 78B.

To explain the action of such a jig, as shown in FIG. 7, a wedge-shaped jig 79A is brought into contact with the side surface of the filter 4, and the wedge-shaped jig 79A is operated as indicated by the arrow 300 in FIG. , as shown in FIGS. 6 and 7, a metal frame 5 which is the outer peripheral frame
1 is incorporated into the internal filter 52. Next, a little later, as shown in Fig. 8, the corner pushing jig 79B is
and as shown by arrow 400 in FIG.
Activate the jig 79B. As shown in the figure, this corner pushing jig 79B has a blunt shape, and has a structure that holds the corner of the filter 5 while expanding outward so as to reduce the gap with the container 8. There is. These two jigs 79A and 7
By continuing to press 9B, as shown in FIGS. 6 and 9, the unformed filter 5 can be formed into a four-part flower-shaped filter 5' using the wedge-shaped jig as a guide.

By compressing and reducing the volume of a product formed using eight jigs 79 before compression volume reduction, it can be compressed with a relatively small load, the gap between it and the storage container 8 is small, and , since the contact area between the compressively elastic internal filter material 52 and the metal frame 51 increases,
The elastic internal filter material 52 is less likely to recover after being compressed.

By compressing and reducing the volume of the filter 5 using the jig 79 of this embodiment, the volume can be reduced to 1/15 to 1/20, which has the effect of greatly increasing the storage capacity of the storage container. .

FIG. 10 is a perspective view showing a specific example of the longitudinal compression means used in the filter volume reduction processing apparatus according to the present invention. FIG. 11 is a sectional view showing a compression jig used in the compression means.

As shown in FIG. 10, the filter 5 before compression volume reduction
Place the filter press ring 7 on the pedestal 71.
5 is set, a force is applied from the cylinder 72 to the compression jig 74 to compress the pre-compression volume reduction filter 5. This compression jig 74 is provided with a groove 741, as shown in FIG.
A projecting (convex) portion 742 is provided at the center of 41. That is, the compression jig 74 compresses the filter 5 before volume reduction.
The convex portion 742 compresses the central portion of the groove 741, and at the same time, the metal frame 51 of the filter 5 can be compressed while being bent by the outer peripheral surface 743 of the groove 741.

If the filter 5 is compressed and reduced in volume using the above-mentioned compression jig 74, the gap between the storage container 8 and the filter 5' after the volume reduction is reduced, so that the filter 5 can be efficiently stored, and the filter 5 after the compression can be stored. Restoration is less likely.

According to this embodiment, the metal frame 51 of the filter 5
is appropriately mixed with the internal filter material 52, so
This has a remarkable effect on preventing the filter 5 from being restored after compression.

The embodiments of the present invention are as described above.

In addition, in the above embodiment, as shown in FIG.
Although it is a filter volume reduction processing device, the volume reduction processing device 1
And the room 2 may be made into one section of the building. It goes without saying that the embodiments of the present invention may be used in combination with an automatic exhaust filter replacement device (Japanese Patent Laid-Open No. 10498/1983).

Furthermore, in this embodiment, the compression means 7 is composed of the horizontal compression means 76 and the vertical compression means 72, but this simply indicates the positional relationship between the vertical compression means 72 and the horizontal compression means 76. However, the arrangement relationship is not limited to each name.

〔Effect of the invention〕

According to the present invention, a filter consisting of a compressively elastic internal filter material and a rectangular metal frame is compressed and deformed into a flower shape in two steps using a wedge-shaped jig and a pushing jig of the lateral compression means, and then, In order to compress the groove of the longitudinal compression means with the surrounding compression jig and pedestal, the central part (internal filter material part) of the flower-shaped filter and the metal frame part are further compressed and deformed in one step. Ru. Therefore, the contact area between the easily-restored internal filter material and the plastically deformed metal frame is increased, and restoration after compression can be prevented.
Moreover, the volume can be sufficiently reduced through the above three steps. Since the filter can be compressed and reduced in volume consistently and automatically, it is possible to save labor and maintain a good working environment.

[Brief explanation of drawings]

FIG. 1 is a basic configuration diagram showing a filter volume reduction processing apparatus according to the present invention, FIGS. 2 to 4 are explanatory diagrams shown to explain the operation of an embodiment according to the present invention, and FIG. A perspective view showing the specific configuration of the lateral compression means used in the filter volume reduction processing device according to the above, and FIGS. 9 and 9 are explanatory diagrams shown to explain the action of the horizontal compression means, and FIG. 10 is a perspective view showing the specific configuration of the vertical compression means used in the filter volume reduction processing device according to the present invention. 11 are cross-sectional views showing the same compression jig. 1... Filter volume reduction processing device, 2... Negative pressure chamber,
5... Filter, 6... Carrying means, 7... Compressing means, 8... Storage container, 9... Carrying out means, 10...
Control means, 11... Decontamination device, 12... Contamination measurement monitor, 72... Vertical compression means, 71... cradle, 74... Compression jig, 75... Filter press ring, 76... Horizontal direction Compression means, 79...Jig.

Claims (1)

[Claims] 1. Carrying means for carrying in and placing a filter made of compressively elastic internal filter material and a rectangular metal frame in a predetermined position, and a filter carried and placed by the carrying means. A compression means for compressing and destroying the filter, a carrying-out means for storing the filter compressed and broken by the compression means in a storage container, sealing the storage container and carrying it out, and controlling the operation of each of the means in a predetermined order. A control means for reducing the volume of the filter;
In the filter volume reduction processing apparatus, the compression means includes a lateral compression means for compressing the filter placed by the carrying means in the lateral direction, and a vertical compression means for compressing the filter in the vertical direction. The lateral compression means includes a wedge-shaped jig for inwardly folding four sides of the rectangular metal frame of the filter placed by the carrying means, and a wedge-shaped jig for folding inward the four sides of the rectangular metal frame of the filter placed by the carrying-in means; Equipped with a pushing jig to push inward,
The longitudinal compression means has a pedestal on which the filter is placed by the carrying-in means, an outer circumference that is substantially the same as the outer periphery of the filter placed on the pedestal, and a surface facing the filter. 1. A filter volume reduction processing device comprising: a compression jig having a groove around the periphery of the filter. 2. In the filter volume reduction processing apparatus according to claim 1, the carrying-out means grasps the filter compressed by the compression means and stores it in the storage container, and when the storage container reaches a certain amount, A filter volume reduction processing apparatus comprising: a gripping and sealing means for sealing the storage container; and a conveying means for carrying out the storage container sealed by the gripping and sealing means.