JPS61124437A - Discharge device for powdery material - Google Patents

Abstract

PURPOSE:To prevent exposure of a contaminated surface to which powder dust is adhered, by a method wherein, in a discharge device for a powdery material containing a radioactive material in a reactor facility, a discharge container is connected to a filling container through a double sealed filling pipe. CONSTITUTION:The discharge port of a discharge container 1 is coupled with a discharge control valve 2 and a communicating pipe 3, and a blind cover 4 is installed to the forward end of the discharge port to doubly seal a powdery material. A guide 30, adapted to install the discharge container 1 thereon, and a valve opening and closing device 31, which automatically opens and closes the discharge control valve, are locted to the upper end of a cradle 15. An enclosure box 16 is formed in a hollow forming a rectangular parallel piped, and an upper flange 18 is attached thereto. A charge pipe 23, through which a filling container 25 receiving the powdery material and a filling control valve 24 are intercoupled, is located to the lower part of the enclosure box. A blind cover opening and closing box 19, a filling pipe 21, and a rail 26, serving to horizontally move then, are provided in the enclosure box, and a cylinder 22, serving to move the blinder cover opening and closing box 19 and the filling pipe 21 in the direction of an arrow mark 46, is attached to the external side of the enclosure box.

Description

[Detailed description of the invention] [Field of application of the invention] The present invention relates to a container for transporting powder or granular material (hereinafter referred to as a discharge container).

This invention relates to a discharge device for discharging powder and granular material filled into a container (hereinafter referred to as a filling container) into another container, hopper, storage tank, or the like (hereinafter referred to as a filling container).

[Background of the invention]

In order to transfer the powder or granular material to another location or temporarily store it, it is necessary to fill the powder into a discharge container and then discharge the powder and granule from the discharge container into another filling container. It is being done. In this case, after arranging the discharge port of the discharge container to face the input port of the filling container, open the blind cover of the discharge port, and then open the discharge pulp (provided on the side of the discharge container) to perform the discharge operation. However, the opening and closing operations of this blind lid and the opening and closing operations of the discharged pulp are normally performed manually.

Particularly in industries that handle hazardous powder and granular materials containing radioactive materials, it is necessary to handle blind lids and discharge pulp reliably, so there is a strong tendency for these operations to be performed manually.

However, when handling powder or granular materials, it is very difficult to prevent the diffusion of dust. Moreover, the dust generated during the operation of discharging the powder from the container is undesirable because it is inhaled by the worker and has an adverse effect on the human body.

In particular, in industries that handle hazardous powder and granular materials such as waste treatment equipment at nuclear facilities, automation of equipment is particularly required to reduce exposure, and research and development of highly reliable automated equipment is required. It is progressing.

Unexamined Japanese Patent Publication No. 1983 as a prior art related to filling and storage of powder and granular materials
-93100 is disclosed. However, this technique is a manual device and is not applicable.

As another example, FIG. 11 shows a sectional view of the simplest discharge device used in general industries that handle powder and granular materials.

In FIG. 11, the pedestal 15 is composed of a container handling device 101 for grasping the discharge container 1, a drive device 100 for raising and lowering the handling device 101t, and a container reversing device 107 for vertically reversing the discharge container 1. ing. The discharge container 1 has a conical opening 104 at the top.
This makes it easy to insert.

The filling container 25 that receives the powder and granules has an inverted conical receiving opening 1 at the top of the container to facilitate receiving the powder and granules.
05.

Here, the operation of the discharge device configured as described above will be described. A cart 1 moves a discharge container 1 filled with powder and granules.
06, the container is transported to the container nodding device 101,
Next, the discharge container 1 is grabbed and the drive device 100
Lift it in the direction of 02 and stop lifting completely at a predetermined height. Next, the filling container 25 is carried into the vicinity directly below the discharge container 1 lifted by the transfer cart 106. Next, the discharge container is reversed in the 103 direction by the discharge container reversing device 107 and the powder is discharged into the filling container 25 . After the discharge is completed, the filling container 25 is carried out by the transfer cart 106.

This method has the disadvantage that there is no connection between the discharge container 1 and the filling container 25, and the discharge route for the powder and granules is open, so that a large amount of dust is spread around.

In particular, discharge devices used in industries that handle powders harmful to the human body must have a closed connection between the discharge container and the filling container in order to prevent the spread of dust as much as possible.

Next, an example in which the discharge container and the filling container are connected in a sealed structure will be described with reference to FIGS. 12 and 13.

In FIG. 12, the pedestal 15 is composed of a container handling device 101 that grips the discharge container 1, and a drive device 100 that moves the handling device 101'e along a guide rail 108. The guide rail 108 is curved in an arc shape. The discharge container 1 that has been moved is automatically turned over.

The discharge container is composed of a discharge operation pulp 2 and a communication pipe 3 having a conical tip. The filling container 25 has an inverted conical opening 109t at the top so that the communication pipe 3 can be fitted therein.

In the discharge device shown in FIG. 12 above, the discharge container 1
Since the filling container 25 and the filling container 25 are in close contact with each other, there is little possibility that dust will scatter during the discharge operation of the powder or granular material, but the dust will still scatter from the gap.

Moreover, when each container is separated and carried out, it is not possible to capture the dust that has adhered to the inside of the liaison officer 3 or the inner surface of the opening 109 of the filling container 25, so that the dust spreads to the surrounding area during transportation, and the contaminated area There is a risk that it will expand.

Next, the example shown in FIG. 13 will be explained. Filling tube 13
0 consists of a fixed pipe 120 and a communication pipe 122,
A lower end 7/jet 128 of the fixed tube 120 is coupled to an upper end 7 flange 131 of a connecting pipe 121 provided on the pedestal 15 for guiding powder and granular material. The communication pipe 122 has a communication pipe flange 123 connected to a piston mid 125 of a cylinder 124 fixed to the upper surface of the pedestal 15 so that it can move up and down as shown by an arrow 125, and an upper end flange 127 connected to the discharge container 1. A spigot is provided so that it can be connected to the connected discharge operation valve 2. A bellows 126 made of cloth or the like is suspended around the upper end 7 lunges of the communication pipe 122 at the lower end of the pedestal 132 on which the discharge container 1 is carried and installed.

The operation of the powder discharge device constructed as described above is as follows. When the discharge container 1 is carried in and installed on the pedestal 132 by a crane or the like, the cylinder 124 is moved to push the filling pipe 130, and the communication pipe 122 is raised as shown by the arrow 127, and the discharge operation valve 7 is moved. The upper end 7 flange of the communication pipe 122 presses against the outer periphery of the flange. After that, the discharge operation valve 2 is operated in the opening direction, and the powder and granules are transferred to the connecting pipe 121,
It is discharged into the filling container 25 via the fixed pipe 120, the communication pipe 122, and the filling operation valve 24. During this discharge operation, the lower end of the bellows 126 comes into contact with the upper surface of the pedestal 15, and the air inside the bellows 126 is sucked through the suction vibro 0t. Dust scattered from the gap in the fitting part and the gap in the sliding part between the connecting pipe 122 and the fixed pipe 120 is collected.

When the discharge work is completed, the discharge operation valve 2 is operated in the closing direction, and after confirming that this valve is fully closed,
The cylinder 124 moves it downward as shown by the arrow 27.

However, even in such a powder discharge device, it is extremely difficult to completely prevent dust from leaking from the connection between the communication pipe 122 and the discharge container 1, and to recover leaked dust. . Further, when the container is separated and transported after completion of the discharge as described in FIG. 12, there is a drawback that dust adhering to the inner surface of the valve spreads to the surrounding area and enlarges the smeared area.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a powder discharge device in which a contaminated surface with dust attached thereon is not exposed.

[Summary of the invention]

In order to achieve the above object, the present invention provides a discharge port of a powder container filled with powder and granular material to be discharged, and a receiving container facing the discharge port for receiving the discharged powder and granular material. In a discharge device that is interposed between the discharge port and discharges the powder or granular material in a sealed state, the discharge port covers the space between the discharge port and the input port in a state where the discharge port is placed at a position facing the input port. A sealed box, and a lid f provided in the sealed box and provided at the opening of the input port: a lid opening/closing device that moves away from a position between the discharge port and the input port after opening, and returns to close the lid when the discharge is completed. and a connecting pipe that is provided in the sealed box and is located between the outlet and the input port after the lid opening/closing device is separated, and forms a discharge passage that communicates both openings, and is separated when the discharge is completed. It has a characteristic gold.

[Embodiments of the invention]

Next, a preferred embodiment of the powder discharge device according to the present invention will be described according to the attached example.

FIG. 1 shows a sectional view of a powder discharge device according to the present invention. In FIG. 1, the discharge port of the discharge container 1 is constructed by connecting a discharge operation valve 2 and a communication pipe 3, and a blind lid 4 is provided at the tip of the discharge port, and a good powder and granule material is double-filled into the discharge port. It's sealed.

A guide 30 for installing the discharge container at the upper end of the pedestal 15 and a valve opening/closing device 31t for automatically opening and closing the discharge operation valve are attached.

The airtight box 16 is hollow and has a substantially rectangular parallelepiped shape, and is provided with an upper flange 1B having an opening 34 to which the communication pipe 3 of the discharge container 1 and the blind lid 4t are attached. At the bottom, an input pipe 23 is provided that connects a filling container 25 for receiving powder and a filling operation valve 24 . Inside, there is a blind lid opening/closing box 19, a filling pipe 21 which is integrated with this opening/closing box 19 and attached to the side of the opening/closing box 19, and a rail for horizontally moving the blind lid opening/closing box 19 and the filling 21 in the direction of arrow 46. 26 are provided. A cylinder 22 for moving the blind lid opening/closing box 19 and the filling tube 21 in the direction of arrow 46 is attached to the external side. This blind lid opening/closing box 19 has a discharge container 1 on the upper side and a filling container 2 on the lower side.
5 is installed on the pedestal 15. or,
A suction vibro 0 is connected to the upper part of the sealed box 16, so that the air inside the sealed box 16 can be sucked as shown by an arrow 61.

The blind lid opening/closing box 19 is hollow and has a substantially rectangular parallelepiped shape, and FIG. 6 shows a cross-sectional structure of the blind lid opening/closing box 19.

In FIG. 6, there is an opening 42 at the top of the blind lid opening/closing box 19.
A ring-shaped guide 35 is provided around this opening 42. Removable bottom plate 20 at the bottom
has been established. A plurality of wheels 45 are installed on both sides of the outside for horizontally moving the blind lid opening/closing box.

Inside, there is a blind lid receiving seat 36 that closes the opening 42 and slides up and down (the blind lid receiving seat 36 has a substantially concave cylindrical shape, and a cylinder 27t, which will be described separately), is installed in the recessed part. There is,
) This blind lid receiving seat 36t houses a cylinder 28 that is driven in the direction of arrow 38 and a cylinder support 40 that supports and attaches this cylinder 28, and a stopper 39 is attached to the lower end of the guide 35. .

Filling pipe 2 integrated with blind lid opening/closing box 19
The structure of No. 1 will be explained with reference to FIG.

The filling tube 21 is attached to the blind lid opening/closing box 19 by a mounting seat 47, and an upper slide tube 50 having an inverted conical receptacle 54 at its upper portion is inserted into the inner cylindrical surface of the filling 'tf 21.

A lower slide tube 51 is inserted into the outer cylindrical surface of the filling tube 21 at the bottom. A cylinder 29 for moving the upper slide tube 50 and the lower slide tube 51 in the direction of arrow 53 is attached to the filling tube 21.

100M sealing the powder and granular material filled in the discharge container IK
The structure of No. 4 will be explained with reference to FIGS. 3, 4, and 5.

The external shape of the blind lid 4 is such that each pipe has a conical taper so that the upper outer circumferential surface of the blind lid 4 comes into close contact with the inner surface of the connecting pipe 3 and stops, and when the connecting pipe 3 and the blind lid 4 are in close contact with each other, , blind lid 4
A part of the taper is at the same position as the lower end of the connecting pipe 3. Below the conical portion, the blind cover is a cylindrical convex portion that can be fitted into a recessed portion inside the seat 36.

The inner peripheral portion is provided with a concave cylindrical notch hole 63 machined from the lower end side. The upper conical part and the lower cylindrical part are each provided with a plurality of holes 62 that penetrate from the outer periphery to the inner periphery to the notched hole 63, and each hole 62 has a conical tip and a conical hole at the other end. Column-shaped connecting pins 5 and 6 smaller than the maximum diameter are inserted. The connecting bottles 5 and 6 are configured so that a ring 65 provided near the middle between the outer diameter of the conical end portion and the cylindrical portion can slide within the hole 62 and move.

A stopper 64 is provided in the hole 62, and the connecting bottle 5
This limits the outward movement of 6 and 6. Coil springs 7 and 8 are attached to the cylindrical parts of the connecting bottles 5 and 6, and concave spring seats 9 and 10 are inserted to cover the outer peripheries of the coil springs 7 and 8 and fit into the holes 62. There is. A concave cylindrical slide ring 11 that fits into the cylindrical notch hole 63 of the blind lid 4 and can slide up and down is inserted. The outer cylindrical surface of this slide ring 11 has a groove 66 with a concave intermediate portion. A coil spring 12 is attached to the inside of the cylinder of this slide ring.
is installed and the slide ring is 11'! l: Always press downwards, and insert this slide ring 1 at the bottom of the notch hole 63.
A stopper 13 is provided to prevent the item from falling off.

The blind lid 4 configured as described above functions as follows to seal the powder inside the discharge container 1. A ring-shaped groove 13 is provided at the same height as the hole 12 provided in the blind lid 4 so that the connecting pipe 3 and the blind lid 4 are in close contact with each other at a part of the conical taper, and the conical end of the connecting pin 5 is fitted into the connecting pipe 3 and the blind lid 4. is being processed.

The connecting pin 5 hits a stopper 64 in the hole 12 and a ring 65 provided in the middle of the connecting pin, and acts as a stopper. At this time, the conical portion at the tip is coupled to the groove 13 of the communication tube 3. In order to maintain this state, a compressive force is applied to the coil spring 7 via the spring seat 9 by the height difference of the convex portion provided on the upper side of the outer cylinder of the slide ring 11, thereby pushing the connecting bottle 5 outward. Further, the upper convex portion of the slide ring 11 is pushed downward by a coil spring 12 mounted inside the slide ring 11 so that the upper convex portion is always in contact with the spring seat 9. When the connecting pipe 3 and the blind lid 4 are connected and sealed, the spring seat 10 of the lower connecting pipe 6 of the blind lid 4 is in contact with the recess of the slide ring 11, and the coil spring 8 is closed without compressive force. Lid 4
The tip of the connecting pin 6 is located inside the outer diameter of the cylindrical portion.

The discharge container 1, which is sealed by fully closing the blind lid 4 installed on the upper side of the pedestal 15 and the discharge operation valve 2, is attached to the upper 7 flange 18 of the closed box 16. The state at this time is shown in FIG.

The blind lid receiving seat 3G of the blind lid opening/closing box 19 is in close contact with the opening 34 of the upper 7 langes and the lower cylindrical portion of the blind lid 4Q, and the upper surface of the blind lid receiving seat 36 is in contact with the lower conical end surface of the blind lid 4. They are also in close contact. At this time, a ring-shaped groove 14 is machined in the concave surface of the blind lid receiving seat 36 that fits into the lower cylindrical portion of the blind lid 4 so that the tip of the connecting pin 6 fits therein.

The piston rod of the cylinder 27 installed in the blind cover seat 36 moves in the direction of the arrow 37 shown in FIG. 4, and the slide ring 11 is pushed upward. At this time, the contact position of the spring seat 9 that is in contact with the concave and convex portion of the outer cylinder of the slide ring 11 changes with the concave portion, and the contact position of the spring seat 1o with the lower convex portion changes. As a result, the concave-convex stepped coil spring 7 is extended, and the connecting pin 5 that has been fitted with the connecting pipe 3 is moved to the fluorescent side where the coil spring 7 is extended, and the connection between the connecting pipe 3 and the blind lid 4 is released.

The coil spring 8 is compressed in the opposite direction, and the connecting pin 6 is pushed out and fitted next to the blind cover seat 36 , so that the blind cover 4 becomes integral with the blind cover seat 36 .

Next, as shown in FIG. 6, the cylinder 28 in the blind lid opening/closing box 16 moves the blind lid catch seat 36t integrated with the blind lid 4 in the direction shown by the arrow 38 below the lower end of the upper 7 flange 18. do. After confirming that it has been moved, the cylinder 22 provided on the outside of the sealed box 16 is used to close the blind lid opening/closing box 19.
t-move in the direction shown by arrow 46; At this time, the filling pipe 21 integrated with the blind lid opening/closing box 19 is inserted into the upper part of the storage box 16.
The flange 18 is automatically set to the position of the opening 34. After confirming that the blind lid opening/closing box 19 has been moved, move the cylinder 29 attached to the filling tube 21 as shown in FIGS. , the upper slide tube 51 comes into close contact with the lower end of the upper 7 flange 18, and the opening 3
Cover 4. The lower slide tube 51 is inserted into the input port 23 at the bottom of the storage box 16, and the discharge container 1 and the filling tube 25 are connected via the filling tube 21, as shown in FIG. After confirming the connection, as shown in Figure 10, open the discharge operation valve 2.
In order to open the cylinder 32, move the rotary shaft 58 connected to the pulp opening/closing handle 55 in the direction of the arrow 56,
It is coupled to the pulp opening/closing handle 55. The valve is opened by the drive device 33 and the powder is discharged. At this time, the desired air inside the storage box is sucked in the direction of the arrow 61 via the suction vibro 0.

When the discharge of the powder and granular material is completed, the blind lid opening/closing box 19 returns to its original position by following the procedure substantially in reverse to the above-described operation, and the opening 34 of the upper 7 langes 18 of the storage box 16 is connected to the blind lid receiving seat 36. The inside of the storage box is sealed tightly.

In such an embodiment, the area A in direct contact with the powder
(Refer to Figure 10) In addition, there is no external VC exposure at all in area B, which may be indirectly contaminated by leaked powder, and the contamination of the surrounding area by dust can be completely eliminated. . Since the above-mentioned method can prevent dust from scattering, it is possible to omit a conventionally required dust collection device, etc., and this has great effects in terms of economy and equipment space.

〔Effect of the invention〕

According to the present invention, it is possible to prevent contamination around the device from a place where the surface contaminated by dust is not exposed.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing an embodiment of the powder discharge device according to the present invention, Fig. 2 is a configuration diagram of a discharging container, Fig. 3 is a partial sectional view showing the structure of a blind lid, and Fig. 4 Figure 5 is a partial sectional view showing the state in which the blind lid is combined with the blind lid receiver, Figure 5 is a partial sectional view showing the discharge container attached to the storage box, and Figure 6 is the removal and movement of the blind lid from the discharge container. 7 is a sectional view taken along line I-I in FIG. 1, FIG. 8 is a diagram showing the structure of the filling tube, and FIG. 9 is a sectional view showing the filling container after moving the blind lid opening/closing box. Fig. 10 is a partially enlarged view showing the state in which the preparation for discharging the powder into the filling tube container is completed; The figure is a sectional view showing the first example of the simplest conventional discharge device used in general industry that handles powder and granular materials, FIG. 12 is a sectional view showing the second conventional example, and FIG. 13 is the conventional example. It is a sectional view showing a third example. 1... Discharge container, 2... Discharge operation pulp, 3...
Communication pipe, 4... Blind lid, 15... Frame, 16... Closed box 1.19... Blind lid opening/closing box, 21... Filling pipe, 2
2... Cylinder, 23... Input pipe, 24... Filling operation pulp, 25... Filling container, 27... Cylinder, 28... Cylinder, 29... Cylinder,
31...Pulp opening/closing device.

Claims (1)

[Claims] 1. Interposed between the discharge port of a discharge container filled with powder and granular material to be discharged and the input port of a filling container that faces the discharge port and receives the discharged powder and granular material. A discharge device for discharging the powder or granular material in a sealed state, comprising: a sealed box that covers a space between the discharge port and the input port with the discharge port placed in a position facing the input port; and the sealed box. a lid opening/closing device that opens a lid provided in the opening of the input port, leaves a position between the discharge port and the input port, and returns to close the lid when the discharge is completed; and a filling pipe that is located between the discharge port and the input port to form a discharge path that communicates both openings after the lid opening/closing device is separated, and a filling pipe that is separated when discharge is completed. Excretion device of the body. 2. A powder discharge device according to claim 1, wherein the lid opening/closing device is placed in a sealed box and further sealed by the sealed box.