JPH0216118Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a device for introducing waste into an incinerator, which is suitable for injecting radioactive solid waste generated from nuclear power plants, etc. into an incinerator. be.

(Conventional technology) Combustible radioactive waste generated from nuclear power plants, etc. is packed into polyethylene bags to make it easier to handle and to prevent scattering. Normally, the waste is thrown into the water and incinerated. As shown in Japanese Patent Publication No. 58-43719, a charging device for this purpose is a furnace lid with an opening provided above the charging port so as to be slidable by a cylinder. Attach a bottomless bucket to the top and integrally with the furnace lid, and with the furnace lid closing the input port of the incinerator, put the bagged objects into the bucket, and the furnace lid will slide to open the incinerator. An incinerator is known in which the bagged objects fall into the incinerator when the incinerator matches the input port.

However, if the bag is torn when being poured into the bucket, the contents may scatter onto the furnace lid or get caught in the sliding parts, and the lower part of the bucket, which is provided in close contact with the bottom surface of the bucket, may The ends of the polyethylene bags were caught between the partition plate and the top surface of the furnace lid and were welded together due to high heat, causing problems such as the furnace lid becoming unable to operate.

(Problems that the invention attempts to solve) This invention solves the conventional problems as mentioned above,
Even if the bag were torn, the contents would not be scattered onto the furnace lid, and there would be no risk of malfunction due to the edges of the bag getting caught. It was completed with a purpose.

(Means for Solving the Problems) The present invention provides an airtight box between the inlet at the top of the incinerator and the hopper outlet of the waste hopper which is eccentric with respect to the inlet, and the inside of the airtight box is A furnace lid with an opening and a bottomless bucket supported above the opening of the furnace lid are provided to be slidable, and when the bucket is located directly below the hopper outlet, the bottom surface of the bucket is A slide damper is installed on the lower surface of the hopper outlet protruding into the airtight box, and a perforated partition plate is installed on the upper surface of the bucket that presses the lower surface of the slide damper with spring force. It is characterized by:

(Example) Next, the present invention will be explained in detail with reference to the illustrated embodiment. 1 is an incinerator, 2 is an inlet provided at the top of the furnace, and 3 is a waste bag that has been packed in a bag made of polyethylene or the like. The waste hopper 4 for feeding is the hopper outlet, and as shown in the figure, the input port 2 and the hopper outlet 4 are located at eccentric positions. Reference numeral 5 denotes an airtight box provided between the hopper outlet 4 and the inlet 2 of the incinerator 1, and is intended to prevent radioactive waste from scattering to the outside from this part. Reference numeral 6 denotes a refractory furnace lid installed inside the airtight box 5, and a cylinder 7 installed on the side allows the lid to be connected between the position shown in FIG. 1 and the position shown in FIG. It is something that can slide. The furnace lid 6 is provided with an opening 8 corresponding to the inlet 2 of the incinerator 1, and in the position shown in FIG. 1, the furnace lid 6 closes the inlet 2 of the incinerator 1, and in the position shown in FIG. When it slides, the opening 8 is the input port 2.
The bag stuffing is placed into the furnace in accordance with the 9 is an arm 1 placed above the opening 8 of the furnace lid 6.
It is a bottomless bucket supported by 0 and is supported with a sufficient gap between it and the furnace lid 6. It is preferable that the bucket 9 has a plurality of ventilation holes 11 formed in its lower part covered with a wire mesh. A lower partition plate 12 is fixed inside the airtight box 5 to close the lower surface of the bucket 9 when the bucket 9 is located directly below the hopper outlet 4 as shown in FIG. On the other hand, the cylinder 1 is located on the bottom surface of the hopper outlet 4.
A slide damper 14 is provided which is slid by 3. A perforated partition plate 16 is provided on the upper surface of the bucket 9 to press the lower surface of the slide damper 14 by the force of a spring 15, so that the slide damper 14 is pressed against the lower surface of the hopper outlet 4. As shown in the figure, it is preferable that the lower surface of the bucket 9 and the end surface of the lower partition plate 12 be chamfered so that a gap is created between the two in the state shown in FIG.
It is preferable that a sufficient gap is also formed between the furnace cover 6 and the furnace cover 6.

(Function) In the device constructed as described above, first, as shown in FIG.
to the left to position the bucket 9 directly below the hopper outlet 4, and
After closing a slide damper 14 provided on the lower surface of the waste hopper 3, the bag filling is supplied from the waste hopper 3, and when the slide damper 14 is opened, the bag filling falls into the inside of the bucket 9. In this position, Bucket 9
Since the lower surface of the bag is closed by the lower partition plate 12, the stuffed bag will rest on the lower partition plate 12.
When the bag contents fall into the bucket 9 in this way, the perforated partition plate 16 provided on the top surface of the bucket 9 presses the bottom surface of the slide damper 14 by the force of the spring 15, and the slide damper 14 is pulled out. After that, it will come into close contact with the bottom of the hopper exit 4, so
Even if the bag were torn, the contents would surely fall into the bucket 9 and would not be scattered outside. Furthermore, even when the contents are dispersed on the slide damper 14, the slide damper 14 slides while being pressed against the hopper outlet 4 by the perforated partition plate 16, so that its upper surface is self-cleaned and the dispersed contents are To surely fall into the bucket 9 without scattering to the outside.

Next, when the furnace lid 6 and the bucket 9 are slid to the position shown in FIG.
The bag filling in the bucket 9 falls into the incinerator 1.
At this time, there is a sufficient gap between the bottom surface of the bucket bag 9 and the furnace lid 6, so there is no risk of the edges of the bag getting caught or malfunctions due to sticking of welded material. Since the inside of the furnace is normally maintained at a negative pressure, surrounding air is sucked into the furnace through this gap, and at this time, debris on the furnace lid 6 is sucked into the furnace. In particular, in the case where the ventilation hole 11 is provided in the lower part of the bucket 9 as in the embodiment, the ventilation hole 1
1 creates an air flow towards the interior of the bucket 9, which is advantageous for suctioning the dispersed contents. After the bags have been loaded into the furnace, the furnace lid 6 returns to the state shown in FIG. 1, and the same operation is repeated.

(Effect of the invention) As is clear from the above explanation, the present invention provides a perforated partition plate supported by a spring on the top surface of the bucket, and presses the bottom surface of the slide damper provided on the bottom surface of the hopper outlet. This ensures that the top surface of the bucket is sealed, and even if the bag is torn, all the contents will be thrown into the bucket and will not be scattered around. Further, since the upper surface of the slide damper slides while being pressed against the hopper outlet by the spring force, it is self-cleaned and the contents are not scattered. Moreover, in the present invention, there is a gap between the bottom surface of the bucket and the top surface of the oven lid, so even if welded material forms on the top surface of the oven lid, it will not cause malfunction, and the edges of the bag will not be damaged. Biting is also prevented. Moreover, in the state shown in FIG. 2, air is sucked into the furnace through this gap, so even if some scattered matter is present on the furnace lid, it has the effect of being sucked into the furnace by the air flow. In addition, the above-mentioned suction effect is more pronounced when a plurality of ventilation holes are provided in the lower part of the bucket as in the example. This is particularly advantageous in preventing bag fillers from being bitten.

Therefore, the present invention has extremely great practical value as it solves the problems of conventional waste input devices for this type of incinerator.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing an embodiment of the present invention, and FIG. 2 is a cross-sectional view showing the furnace lid and bucket in a slid state. 2: Inlet, 3: Waste hopper, 4: Hopper outlet, 5: Airtight box, 6: Furnace lid, 8: Opening part,
9: bucket, 11: ventilation hole, 12: lower partition plate, 14: slide damper, 16: perforated partition plate.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. An airtight box 5 is provided between the inlet 2 at the top of the incinerator and the hopper outlet 4 of the waste hopper 3 eccentrically placed with respect to the inlet, and an airtight box 5 is provided inside the airtight box 5. A furnace cover 6 with an opening 8 and a bottomless bucket 9 supported above the opening 8 of the furnace lid 6 are slidably provided, and the bucket 9 is placed directly below the hopper outlet 4. A lower partition plate 12 is fixed that closes the lower surface of the bucket 9 when the bucket 9 is positioned, and a slide damper 14 is provided on the lower surface of the hopper outlet 4 protruding into the airtight box 5, and a spring force is applied to the upper surface of the bucket 9. A device for introducing waste into an incinerator, characterized in that a perforated partition plate 16 is provided to press the lower surface of a slide damper 14. 2 The bucket 9 has a plurality of ventilation holes 11 in its lower part.
The first claim for utility model registration is
Equipment for feeding waste into the incinerator as described in Section 1. 3. The apparatus for introducing waste into an incinerator according to claim 1, wherein the lower partition plate 12 is fixed above the opening 8 of the furnace lid 6 with a gap therebetween.