JP2005219864A - Telescopic joint and conveyance device equipped with it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a conveyance device provided with a telescopic joint having durability and stable quality, capable of securely absorbing relative displacement in many directions due to vibration in all the directions between a fixed body and a vibration body, preventing leakage of a powder-like and liquid-like conveyed body completely to convey it stably, reducing the number of parts to simplify a structure, and providing satisfactory assembly property and maintenance property. <P>SOLUTION: This conveyance device provided with the telescopic joint is constituted in such a way that the telescopic joint for reducing transmission of vibration between the vibration body and the fixed body is provided in a conveyance passage connecting the fixed body capable of storing granular or powder-like or liquid-like conveyed body inside it with the vibration body capable of applying vibration to the conveyed body. The telescopic joint has rubber bellows which are integrally molded like a telescopic tube by curving a thin plate made of a rubber material in a single layer or many layers and a flange part fixed to both end parts of the rubber bellows and connected with the fixed body or the vibration body so that it is freely deformed in many directions due to relative displacement of the vibration body and the fixed body. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention is applied to a transport device for transporting waste or ash to an incinerator or melting furnace, and adds a fixed body capable of accommodating a granular, powdery, or liquid transported body therein, and a transported body. A vibration body that can be vibrated is connected by a conveyance path interposing an expansion joint for vibration reduction, and the object to be conveyed is conveyed between the fixed body and the vibration body through the conveyance path with the expansion joint. The present invention relates to a transport device including a configured expansion joint.

In the waste treatment equipment, the ash and garbage that are to be conveyed are vibrated and dispersed to the melting furnace or incinerator while being dispersed in the ash and garbage to the incinerator. A vibrating conveyor is installed.
5 to 7 show a conventional example of an apparatus for transporting ash to a melting furnace, FIG. 7 is a schematic cross-sectional view of the vicinity of an expansion joint in the apparatus for transporting ash to a melting furnace, and FIG. FIG. 5 is a cross-sectional view of the main part of the expansion joint (cross-sectional view taken along the line BB in FIG. 6).

In FIG. 7, 10 is an ash storage tank (conveyed body storage tank) in which ash as a transported body is stored, 20 is a vibrating conveyor installed below the ash storage tank 10, and 30 is provided below the ash storage tank. Expansion joints installed between the ash outlet and the ash inlet of the vibrating conveyor 20. An ash conveyance path 18 is formed inside the expansion joint 30.
In such a conveying apparatus, the ash carried out from the ash storage tank 10 is sent to the vibration conveyor 20 and is conveyed while being dispersed in a small amount by being vibrated in the vibration conveyor 20, and is illustrated from the ash outlet of the vibration conveyor 20. Not transported to the melting furnace side.

5 to 6 show an example of the expansion joint 30, in which 40 is a bellows having a rectangular cross section formed of an inorganic fiber cloth and formed in a bellows shape, and both ends of the bellows 40 are rectangular pressers. The plate 31 is fixed via a gasket 35 and a cored gasket 38.
Reference numeral 33 denotes a bolt that is installed between the presser plates 31 and fixes the presser plate 31 to both ends, and 34 is a nut for fixing the presser plate 31. Reference numeral 39 denotes a protective ring for protecting the bellows 40 fitted on the outer periphery of the valley portion of the bellows 40.

  Further, in Patent Document 1 (Japanese Patent Laid-Open No. 8-94046), an expansion joint is connected below the outlet duct of the waste crusher, and a vibration conveyor is installed below the expansion joint. A waste conveying device is disclosed in which the vibration of the pipe is absorbed by an expansion joint to suppress the transmission of vibration to the outlet duct side.

JP-A-8-94046

  In the apparatus for transferring ash to a melting furnace having a vibrating conveyor as shown in FIG. 5, the expansion joint 30 has repeated relative displacement between the vibrating conveyor 20 side and the fixed ash storage tank 10 side. By virtue of this, vibration force acts on the holding plate 31 constituting the flange portion of the expansion joint 30 from an obliquely upward direction (usually a direction inclined by about 30 ° with respect to a plane perpendicular to the transport direction). A torsional force is repeatedly applied to the bellows 40.

However, in the conventional expansion joint 30 shown in FIGS. 5 to 6, since the bellows 40 is formed of an inorganic fiber cloth and is formed in a bellows shape, the relative displacement in the ash conveyance direction due to the vibration of the vibration conveyor 20 is reduced. While it has sufficient strength against repetition, it cannot absorb the twist associated with the vibration force from above, and the strength against the twisting force of the bellows 40 itself made of inorganic fiber cloth is small. .
Accordingly, in such a conventional expansion joint 30, cracks are likely to occur in the bellows crests or troughs due to the torsional force as described above, thereby reducing the durability of the bellows 40 and the cracks. As a result of this, leakage of the conveyed object occurs from the bellows 40.

Further, in the conventional expansion joint 30, the bellows 40 formed in a bellows shape, the presser plate 31 that fixes both ends of the bellows 40, the gasket 35, the cored gasket 38, the bolts 33 for fastening, and It consists of a number of parts such as nuts 34 and protective rings 39. The number of parts is complicated and the structure is complicated. The mounting and dismounting to the ash storage tank 10 side and the vibrating conveyor 20 side are complicated, and assembly and maintenance are easy. Not good.
The waste transport apparatus disclosed in Patent Document 1 also has the same problems as described above.

  Therefore, in view of the problems of the prior art, the present invention can absorb multi-directional relative displacement due to vibrations in all directions between the fixed body and the vibrating body, and has a high durability and stable quality. In addition, it is possible to provide stable expansion by completely preventing leakage of any object to be transported, such as powder and liquid, and with a small number of parts, a simple structure, good assembly and maintenance. It is an object of the present invention to provide a transport device provided.

  The present invention achieves such an object, a vibrating body that vibrates and conveys a granular, powdery, or liquid conveyed object, a connected object that accommodates or passes through the conveyed object, and An expansion joint provided between the vibration body, the expansion joint is integrally formed in a tubular shape that can be expanded and contracted by bending a thin plate made of a rubber material into a single layer or multiple layers, and the vibration body and the connected body It is configured to be deformable in multiple directions by relative displacement with the body.

In this invention, specifically, the following configuration is preferable.
That is, a fixed body that can accommodate a granular, powdery, or liquid transported body therein and a vibrating body that can vibrate the transported body are connected by a transport path, and the vibrating body is connected to the transport path. Expansion joints that relieve transmission of vibration between the fixed body and the fixed body, and are configured to transfer the transported body between the fixed body and the vibrating body through the transport path. The expansion joint includes: a rubber bellows in which a thin plate made of a rubber material is bent into a single layer or multiple layers so as to be integrally formed into a stretchable tube and a transport path is formed therein; and the rubber bellows And a flange portion that is fixed to both ends of the plate and coupled to the fixed body or the vibrating body, and is configured to be deformable in multiple directions by relative displacement between the vibrating body and the fixed body.
Here, the to-be-connected body should just be an object connected with conveyance apparatuses, such as a fixed body and another conveyance apparatus.

The present invention also includes a rubber bellows integrally formed in a tubular shape that can be expanded and contracted by bending a thin plate made of a rubber material into a single layer or multiple layers, and a guide tube provided inside the rubber bellows. It is in the expansion joint characterized by this.
Here, preferably, the guide tube is fixed to the rubber bellows only on one side and the outer diameter is narrowed toward the other end.

According to this invention, the rubber bellows in which the flange portion coupled to the connected body or the vibrating body is fixed to both ends is integrally formed into a tube that can be expanded and contracted by bending a thin plate made of a rubber material into a single layer or multiple layers. Since the expansion joint is formed by molding, the deformability with respect to the relative displacement in the vertical, horizontal, and diagonal directions between the vibrating body and the connected body due to the vibration of the vibrating body, that is, relative displacement in all directions is provided. It becomes large, and it becomes possible to absorb the multi-directional relative displacement due to the vibration with certainty, and also to sufficiently absorb the vibration accompanied by the impact.
Further, since the rubber bellows is formed by seamless integral molding, the quality is stable and the durability is increased.

Further, since the rubber bellows is formed by integrally molding a thin plate made of a rubber material into a single layer or multiple layers and expanding and contracting into a tube that can be expanded and contracted, the sealing property is good. A carrier that is likely to leak, such as a liquid or liquid carrier, can be stably conveyed while completely preventing leakage.
Furthermore, since the expansion joint can be configured by simply fixing the flange portions to both ends of the integrally formed rubber bellows, the number of parts is small, the structure is simple, and the attachment to and removal from the fixed body or vibrating body is easy. it can.

In the present invention, preferably, the rubber bellows is formed in a wave shape in which an enlarged diameter portion and a reduced diameter portion are alternately connected in the direction of the conveyance path, and a ring-shaped protective ring is provided at an appropriate position of the reduced diameter portion. It is attached.
According to this structure, the rubber bellows is formed in a wave shape in which the expanded diameter portion and the reduced diameter portion are alternately connected to each other in the direction of the conveyance path, so that the vertical direction and the horizontal direction between the fixed body and the vibrating body are formed. Further, the deformability of the rubber bellows with respect to the relative displacement in the oblique direction is increased, and it is possible to sufficiently absorb large amplitude vibrations in the vibrating body.
In addition, since a ring-shaped protective ring is attached at an appropriate position of the reduced diameter portion, it is possible to avoid the collapse and distortion due to the softness of the rubber bellows.

In the present invention, preferably, a guide cylinder is provided inside the rubber bellows, and the guide cylinder is formed in a cylindrical shape and in which the conveyance path is formed.
Here, the guide tube is not limited to a circular shape or a rectangular shape in cross section, and may be formed in a hollow shape.
According to this configuration, the transported body transported along the transport path is transported while colliding with the inner surface of the guide cylinder, so that the transported body can be prevented from directly colliding with the inner surface of the rubber bellows by the guide cylinder. Therefore, it is possible to prevent the rubber bellows from being damaged due to the collision of the transported body.

Preferably, in the invention, the guide cylinder, which is formed in a cylindrical shape inside the rubber bellows and in which the conveyance path is formed, is fixed to the rubber bellows only at one end, and has an outer shape toward the other end. It is squeezed.
If comprised in this way, the contact with the said guide cylinder and the said rubber bellows can be prevented, and the failure | damage of the rubber bellows accompanying the friction with this guide cylinder can be prevented.

In addition, as an invention in which the expansion joint is applied to a transport device provided with a vibration conveyor, an expansion joint is interposed in a granular or powder transported body housed in a transported body storage tank made of a fixed body. It is configured to be carried into a vibrating conveyor installed below the transported object storage tank through a transport path, transported while applying vibration to the transported object in the vibrating conveyor, and carried out of the vibrating conveyor. In the conveying device provided with the expansion joint, the expansion joint is a rubber bellows in which a thin plate made of a rubber material is bent into a single layer or multiple layers and integrally formed into a stretchable tube, and a conveyance path is formed therein, A flange portion fixed to both ends of the rubber bellows and coupled to the transported object storage tank or the vibration conveyor; and by relative displacement between the vibration conveyor and the transported object storage tank A conveying device having an expansion joint, wherein the rubber bellows is provided with a guide cylinder formed in a cylindrical shape and having the conveying path formed therein. suggest.
In this invention, it is preferable that the expansion joint is also installed between an exit of a transported body of the vibration conveyor and an external member connected to the vibration conveyor.

According to this invention, the rubber bellows in which the flange portions coupled to the transported object storage tank or the vibration conveyor are fixed to both ends are formed into a tubular shape that can be expanded and contracted by bending a thin plate made of a rubber material into a single layer or multiple layers. Since the expansion joint is formed by integral molding, the vertical, horizontal, and diagonal relative displacement between the vibrating conveyor and the transported object storage tank due to the vibration of the vibrating conveyor, that is, deformation with respect to relative displacement in all directions In addition to being able to reliably absorb multidirectional relative displacement due to the vibrations, it is also possible to sufficiently absorb vibrations with impacts.
In particular, in the transfer device provided with the vibration conveyor, the vibration load acts on the rubber bellows obliquely from above in the direction of twisting the expansion joint due to the vibration of the vibration conveyor. Although it is easy to cause destruction, in this invention, as described above, the rubber bellows has a large deformability with respect to relative displacement in all directions, so that it has sufficient strength against vibration load accompanied by torsion.

In addition, according to the conveying apparatus provided with such a vibration conveyor, the rubber bellows is formed by integrally forming a thin plate made of a rubber material into a single layer or a multi-layered tube that can be expanded and contracted. Even if the transported body from the transported body storage tank is a transported body that easily leaks, such as a granular transported body as well as a granular transported body, leakage is completely prevented. Can be transported stably.
Furthermore, since the expansion joint can be configured by simply fixing the flange portions to both ends of the integrally formed rubber bellows, the number of parts is small, the structure is simple, and the mounting and removal to / from the transported object storage tank or vibration conveyor is also possible. Easy to do.

According to the present invention, since the rubber bellows is integrally molded into a stretchable tube by bending a thin plate made of a rubber material into a single layer or multiple layers, the expansion joint is configured. The relative displacement in the vertical, horizontal, and diagonal directions with the connected body, that is, the deformability against relative displacement in all directions is increased, and it is possible to reliably absorb multidirectional relative displacement due to vibrations and impact. It can absorb enough even with vibration.
Further, since the rubber bellows is formed by integrally molding a thin plate made of a rubber material into a single layer or multiple layers and expanding and contracting into a tube that can be expanded and contracted, the sealing property is good. Even for a transported body that is likely to leak, such as a solid or liquid transported body, leakage can be completely prevented and transported stably.

  Hereinafter, the present invention will be described in detail using embodiments shown in the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the component parts described in this example are not intended to limit the scope of the present invention only to specific examples unless otherwise specified. Only.

  FIG. 1 is a cross-sectional view (a cross-sectional view taken along the line AA in FIG. 2) of the expansion joint in the ash transport apparatus including the vibrating conveyor according to the embodiment of the present invention, and FIG. 2 is a plan view of the expansion joint. It is. FIG. 3 is a schematic cross-sectional configuration diagram of the vicinity of the expansion joint in the apparatus for transferring ash to the melting furnace, and FIG. 4 is a perspective view showing a connection mode between the vibration conveyor and the expansion joint.

3 and 4 showing the ash transport device according to the embodiment of the present invention, 10 is a transported object storage tank in which ash as a transport body is stored, and 20 is installed below the transported object storage tank 10. The vibration conveyor 100 is an expansion joint installed between the conveyed object outlet duct 10 a provided at the lower part of the conveyed object storage tank 10 and the conveyed object inlet of the vibrating conveyor 20.
Reference numeral 17 denotes a chute installed inside the expansion joint 100. The chute 17 is formed in a cylindrical shape and has an ash conveyance path 18 formed therein. The chute 17 allows the rubber bellows 1 of the expansion joint 100 (see FIG. 1). ) Is covered. 11 is a flange for connecting the transported object outlet duct 10 a of the transport body storage tank 10 and the expansion joint 100, and 12 is a flange for connecting the expansion joint 100 and the transported body entrance of the vibration conveyor 20.
As shown in FIG. 4, the expansion joint 100 is also interposed between the conveyed object outlet of the vibration conveyor 20 and a melting furnace side member (not shown), and is provided on the inlet side and the outlet side of the vibration conveyor 20. In both cases, the expansion joint 100 can absorb the vibration of the vibration conveyor 20. 12a is a flange for connection to the melting furnace side member.

In such a conveying apparatus, the ash carried out from the transported object storage tank 10 is sent to the vibrating conveyor 20 through the conveying path 18 in the chute 17 and is dispersed in a small amount by applying vibration in the vibrating conveyor 20. Then, it is conveyed from the conveyed object outlet of the vibrating conveyor 20 to a melting furnace (not shown).
When the ash is transported, a chute 17 formed in a cylindrical shape is provided inside the rubber bellows 1 so that the ash (conveyed body) transported on the transport path 18 collides with the inner surface of the chute 17. Therefore, the chute 17 can prevent the ash lump from directly colliding with the inner surface of the rubber bellows 1, and can prevent the rubber bellows 1 from being damaged due to the collision of the ash lump.

  In the above embodiment, the transported object storage tank 10 is disposed on the upstream side in the transport direction with respect to the rubber bellows 1 and the vibration conveyor 20 is disposed on the downstream side, but the vibration conveyor 20 is disposed upstream in the transport direction with respect to the rubber bellows 1. Alternatively, the carrier storage tank 10 may be disposed on the downstream side, and the vibration conveyor 20 may be disposed on the upstream side and the downstream side with respect to the rubber bellows 1.

1 to 2 showing the details of the expansion joint 100, 1 is a rubber bellows, and a thin plate made of a rubber material is bent into a double layer (may be a single layer or a triple layer or more) and can be expanded and contracted, that is, The expanded diameter portion 1c and the reduced diameter portion 1d are integrally formed in a wave shape in the direction of the conveyance path 18, and an ash conveyance path 18 is formed inside.
Reference numeral 2 denotes a bead ring to which both ends of the rubber bellows 1 are fixed. An upper bead ring 2 is fixed to the transported object outlet duct 10a by a bolt 3 and a nut 4. A lower bead ring 2 is connected to the vibrating conveyor 20. Are fixed by bolts 3 and nuts 4.

The rubber bellows 1 is provided with a ring-shaped protective ring 5 on the outer periphery of the reduced diameter portion 1d, and the diameter of the reduced diameter portion 1d is determined by the protective ring 5.
Thus, since the ring-shaped protective ring 5 is attached to the outer periphery of the reduced diameter portion 1d, the rubber bellows 1 can be prevented from falling or distorted due to the softness.
1 to 3, reference numeral 7 denotes a center line of the transport path 18.

  According to this embodiment, the rubber bellows 1 in which the bead ring (flange 2) coupled to the transported object storage tank 10 or the vibration conveyor 20 is fixed to both ends, the thin plate made of a rubber material is double-layered (single layer). Alternatively, the expansion joint 100 is formed by being integrally formed into a tube that can be bent and expanded in a curved shape, and the vertical between the vibrating conveyor 20 and the transported object storage tank 10 due to the vibration of the vibrating conveyor 20. Directional, horizontal, and diagonal relative displacements, that is, the deformability against relative displacements in all directions is increased, so that multi-directional relative displacements due to the vibrations can be reliably absorbed, and vibrations with impacts are also sufficiently absorbed. it can.

Accordingly, in such an ash transport device, the tilted upward (usually about 30 ° with respect to the plane perpendicular to the transport direction) by repeated relative displacement between the vibrating conveyor 20 side and the transported object storage tank 10 side which is a fixed body. Vibration force acts on the bead ring 2 constituting the flange portion of the expansion joint 100 from this direction, and thereby a torsional force repeatedly acts on the rubber bellows 1 of the expansion joint 100. According to this embodiment, As described above, since the rubber bellows 1 has a large deformability with respect to relative displacement in all directions, the rubber bellows 1 has a sufficient strength against a vibration load accompanied by torsion.
In addition, since the rubber bellows 1 is formed in a wave shape in which the enlarged diameter portions 1c and the reduced diameter portions 1d are alternately connected in the direction of the conveyance path 18, the conveyance object storage tank 10 side which is a fixed body and the vibration which is a vibration body are used. The deformability of the rubber bellows 1 with respect to the relative displacement in the vertical direction, the horizontal direction, and the inclination direction with the conveyor 20 becomes larger, and the large amplitude vibration in the vibration conveyor 20 can be sufficiently absorbed. .
Moreover, since the said rubber bellows 1 is formed by the integral molding with no joint, quality is stabilized.

In addition, according to this embodiment, the rubber bellows 1 is formed by integrally forming a thin plate made of a rubber material into a single layer or multiple layers that can be expanded and contracted, so that the sealing property is good. Even if the ash (conveyed object) from the conveyed object storage tank 10 is ash (conveyed object) that is easily leaked, such as a granular or liquid conveyed object, the ash (conveyed object) is leaked. It can be completely blocked and transported stably.
Furthermore, since the expansion joint 100 can be configured only by fixing the bead ring 2 to both ends of the integrally formed rubber bellows 1, the number of parts is small and the structure is simple. Easy installation and removal.

  According to the present invention, multi-directional relative displacement due to vibration between a stationary body such as a transported object storage tank or a vibrating body such as a vibrating conveyor can be reliably absorbed, and the durability is high and the quality is stable. In addition, it is possible to stably prevent leakage of any object to be transported such as powder and liquid, and to stably transport it.In addition, an expansion joint that has a small number of parts, a simple structure, good assembly and maintenance properties, etc. A transport device provided can be provided.

It is sectional drawing in alignment with the conveyance direction of the expansion joint in the ash conveying apparatus provided with the vibration conveyor which concerns on the Example of this invention (AA sectional view taken on the line in FIG. 2). It is a top view of the expansion joint. It is a general | schematic cross-section block diagram of the expansion-joint vicinity of the conveying apparatus of the ash to the melting furnace in the said Example. It is a perspective view which shows the connection aspect of the vibration conveyor and expansion joint in the said Example. It is principal part sectional drawing (BB sectional drawing in FIG. 6) of the expansion joint which concerns on a prior art. It is a top view of the expansion joint which concerns on a prior art. It is a general | schematic cross-section block diagram of the expansion joint vicinity in the ash conveyance apparatus to the melting furnace which concerns on a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Expansion joint 1 Rubber bellows 1c Expanded diameter part 1d Reduced diameter part 2 Bead ring 3 Bolt 4 Nut 5 Protective ring 10 Conveyed object storage tank 10a Conveyed object exit duct 11, 12 Flange 17 Chute 18 Conveyance path 20 Vibration conveyor

Claims (8)

  A vibrating body that vibrates and conveys a granular, powdery, or liquid carrier, and an expansion joint that is provided between the vibrator and the connected body that can accommodate or pass the carrier inside. The expansion joint is integrally formed into a tube that can be expanded and contracted by bending a thin plate made of rubber material into a single layer or multiple layers, and can be deformed in multiple directions by relative displacement between the vibrating body and the connected body It is comprised by this, The conveying apparatus provided with the expansion joint characterized by the above-mentioned.   A fixed body that can accommodate a granular, powdery, or liquid transported body inside and a vibrating body that can vibrate the transported body are connected by a transport path, and the vibrator is fixed to the transport path. An expansion joint that relaxes transmission of vibration between the body and an expansion joint that is configured to transport the transported body between the fixed body and the vibration body through the transport path is provided. The expansion joint includes a rubber bellows in which a thin plate made of a rubber material is bent into a single layer or multiple layers and integrally formed into an expandable / contractible tube, and a conveyance path is formed therein, and both ends of the rubber bellows And a flange portion fixed to the fixed portion or coupled to the fixed body or the vibrating body, and configured to be deformable in multiple directions by relative displacement between the vibrating body and the fixed body. Conveying device with a joint.   The rubber bellows is formed by curving into a wave shape in which an enlarged diameter portion and a reduced diameter portion are alternately connected in the direction of the conveyance path, and a ring-shaped protective ring is attached to an appropriate position of the reduced diameter portion. A conveying device comprising the expansion joint according to claim 1.   2. A transport apparatus having an expansion joint according to claim 1, wherein a guide cylinder is provided in the rubber bellows and is formed in a cylindrical shape and in which the transport path is formed.   A granular or powdery object to be transported accommodated inside a transported object storage tank made of a fixed body is carried into a vibrating conveyor installed below the transported object storage tank through a transport path in which an expansion joint is interposed. In the conveying device having an expansion joint configured to convey the object to be conveyed while applying vibration to the object to be conveyed in the vibration conveyor, and to carry it out of the vibration conveyor, the expansion joint is made of a rubber material. A rubber bellows that is integrally molded into a stretchable tube by bending a thin plate into a single layer or multiple layers, and a conveyance path is formed inside, and fixed to both ends of the rubber bellows and coupled to the transported object storage tank or vibration conveyor And is configured to be deformable in multiple directions by relative displacement between the vibrating conveyor and the transported object storage tank, and further in a cylindrical shape inside the rubber bellows. By conveying apparatus having a expansion joint, wherein said that the conveying path is provided with a guide cylinder which is formed therein.   6. The conveying apparatus with an expansion joint according to claim 5, wherein the expansion joint is installed between a conveyance object outlet of the vibration conveyor and an external member connected to the vibration conveyor.   An expansion joint comprising: a rubber bellows integrally formed in a tubular shape that can be expanded and contracted by bending a thin plate made of a rubber material into a single layer or multiple layers; and a guide tube provided inside the rubber bellows .   The expansion joint according to claim 7, wherein the guide tube is fixed to the rubber bellows only on one side, and has an outer diameter reduced toward the other end.

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