Recovery system

Abstract

To provide a technique which can suitably recover objects to be treated.SOLUTION: A recovery system recovers objects to be treated. The recovery system comprises: a conveyance device for conveying plural saggers carried out from a heat treatment furnace in a state of being arranged in plural rows in a row direction orthogonal to a conveyance direction for conveying the plural saggers; and a recovery device for simultaneously recovering the objects to be treated from the plural saggers conveyed by the conveyance device in a state where the plural saggers are arranged in the plural rows.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] The technology disclosed herein relates to a recovery system. [Background technology]

[0002] Patent Document 1 discloses a recovery system that includes a transport device that transports saggers removed from a heat treatment furnace, and a recovery device that recovers materials to be treated from the saggers transported by the removal device. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 7041300 Summary of the Invention [Problem to be solved by the invention]

[0004] In the above recovery system, the recovery device recovers the materials from one sagger in one operation. Therefore, if multiple saggers are transported in multiple rows, multiple recovery operations are required to recover the materials from each of the multiple saggers.

[0005] This specification discloses a technique that allows the material to be preferably recovered. [Means for solving the problem]

[0006] In a first aspect of the technology disclosed herein, a recovery system recovers materials to be treated, the recovery system including a conveying device that conveys a plurality of saggers removed from a heat treatment furnace while the saggers are arranged in a plurality of rows in a row direction perpendicular to a conveying direction of the saggers, and a recovery device that simultaneously recovers the materials from the saggers conveyed by the conveying device while the saggers are arranged in the plurality of rows.

[0007] According to the above configuration, the recovery device simultaneously recovers the materials from the plurality of saggers arranged in a plurality of rows in the column direction, thereby making it possible to recover the materials from each of the plurality of saggers with a small number of recovery operations. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a schematic diagram of a heat treatment furnace and a recovery device according to an embodiment of the present invention. [Figure 2] FIG. 2 is a side view of the conveying device, the lid removing device, and the sagger of the embodiment. [Figure 3] FIG. 2 is a top view of the conveying device, the lid removing device, and the sagger of the embodiment. [Figure 4] FIG. 2 is a top view of the conveying device, the de-stage device, and the sagger of the embodiment. [Figure 5] FIG. 10 is a side view of the conveying device, the de-stage device, and the saggers in the embodiment when the lifter is raised. [Figure 6] FIG. 10 is a side view of the conveying device, the de-stage device, and the saggers in the embodiment when the lifter is lowered. [Figure 7] FIG. 2 is a side view of the conveying device, the crushing device, and the sagger of the embodiment. [Figure 8] FIG. 2 is a top view of the transport device, recovery device, and sagger of the embodiment. [Figure 9] FIG. 10 is a side view of the conveying device, the recovery device, and the sagger in the embodiment, when the support member is in the non-supporting position and the second pressing member is in the non-contact position. [Figure 10] FIG. 10 is a side view of the conveying device, the recovery device, and the sagger before the lifter rotates in the embodiment. [Figure 11] FIG. 10 is a view of the transport device, recovery device, and sagger of the embodiment as viewed in the second transport direction. [Figure 12] 10 is a diagram showing the stopper, the lifter, the first pressing portion, and the second pressing member of the embodiment as viewed from above. FIG. [Figure 13]FIG. 10 is a side view of the transport device, the recovery device, and the sagger in the embodiment, when the support member is in the non-support position and the second pressing member is in the abutting position. [Figure 14] FIG. 10 is a side view of the conveying device, the recovery device, and the sagger after the lifter has rotated in the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] The main features of the embodiments described below are listed below. Note that the technical elements described below are independent technical elements that exhibit technical utility alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing.

[0010] In a second aspect of the technology disclosed in this specification, in the first aspect described above, the recovery device includes a recovery container that recovers the materials to be processed, and a lifter that lifts the plurality of saggers from the transport device while the saggers are arranged in the plurality of rows. The lifter moves the materials to be processed in the lifted saggers to the recovery container. According to the above configuration, the materials to be processed can be simultaneously recovered from each of the plurality of saggers with a simple configuration using a lifter.

[0011] In a third aspect of the technology disclosed in this specification, in the second aspect described above, each of the plurality of saggers has an opening at its upper end. The lifter moves the materials to the collection container by inverting the lifted saggers. According to the above configuration, the materials can be easily collected from each of the plurality of saggers by inverting the saggers.

[0012] In a fourth aspect of the technology disclosed in this specification, in the third aspect described above, the recovery device further includes a pressing member that contacts the upper surface of each of the plurality of saggers. The lifter includes a support member that supports the lower surface of each of the plurality of saggers. According to the above configuration, the pressing member contacts the upper surface of the saggers, thereby preventing the saggers from falling from the recovery device when the saggers are inverted.

[0013] In a fifth aspect of the technology disclosed in this specification, in the fourth aspect described above, the pressing member moves between a contact position where it contacts the upper surfaces of the multiple sacks and a non-contact position where it does not contact the upper surfaces of the multiple sacks. When the lifter inverts the multiple sacks while the pressing member is in the contact position, the pressing member inverts along with the multiple sacks. According to the above configuration, the multiple sacks are inverted when the pressing member is in the contact position, thereby preventing the sacks from falling out of the recovery device. Furthermore, when the pressing member is in the non-contact position, it does not contact the upper surfaces of the sacks, thereby preventing interference between the sacks and the pressing member.

[0014] In a sixth aspect of the technology disclosed in the present specification, in any one of the second to fifth aspects, the width of the collection opening of the collection container in the row direction is greater than the width of the plurality of saggers in the row direction when the plurality of saggers are arranged in the rows. According to the above configuration, when the objects to be processed are collected in the collection container, it is possible to prevent the objects from falling out of the collection container.

[0015] In a seventh aspect of the technology disclosed herein, in any one of the first to sixth aspects, the recovery device further includes a pair of side clamps that align the plurality of saggers in the row direction when the saggers are arranged in the rows. When the saggers are not aligned in the row direction, the objects to be processed may fall out of the recovery device. With the above configuration, the objects to be processed can be prevented from falling out of the recovery device.

[0016] In an eighth aspect of the technology disclosed in this specification, in any one of the first to seventh aspects, the recovery device further includes a stopper that can abut against each of the plurality of saggers in the conveying direction and adjusts the positions of the plurality of saggers in the conveying direction. If the positions of the plurality of saggers in the conveying direction are not adjusted, the objects to be processed may fall out of the recovery device. With the above configuration, it is possible to prevent the objects to be processed from falling out of the recovery device.

[0017] (Example) The recovery system 10 shown in FIG. 1 recovers materials 6 from saggers 4 removed from a heat treatment furnace 2. As multiple saggers 4 pass through the heat treatment furnace 2, the materials 6 are fired. As shown in FIG. 2, each sagger 4 has a roughly rectangular box shape with an opening 4a at its upper end. The materials 6 may be, for example, raw materials for ceramic capacitors or cathode or anode materials for lithium-ion batteries. As shown in FIGS. 1 and 2, in this embodiment, the multiple saggers 4 are stacked two at a time and arranged in six rows in a row direction D1. These saggers are then transported from the heat treatment furnace 2 to a recovery device 42. A lid 8 is attached to the uppermost sagger 4 of the two stacked saggers 4. In a modified example, the number of saggers 4 stacked vertically may be three or more, or the saggers 4 may not be stacked vertically. The number of rows of saggers 4 arranged in row direction D1 may be two to five, or seven or more. Furthermore, the upper sagger 4 of two stacked saggers 4 may not have a lid 8 attached.

[0018] As shown in FIG. 1, the recovery system 10 includes a conveying device 14. The conveying device 14 conveys a plurality of saggers 4 removed from the heat treatment furnace 2, arranged in a plurality of rows (six rows in this embodiment) in a row direction D1. As shown in FIG. 2, the conveying device 14 includes a plurality of conveying rollers 16. The plurality of conveying rollers 16 are rotatable. As the conveying rollers 16 rotate, the plurality of saggers 4 are conveyed on the conveying rollers 16 in a conveying direction D2. The conveying direction D2 is perpendicular to the row direction D1.

[0019] 1, the conveying device 14 includes a first section 20, a second section 22, a third section 24, a fourth section 26, a fifth section 28, and a sixth section 30. The first section 20, the second section 22, the third section 24, the fourth section 26, and the fifth section 28 are arranged in order in the conveying direction D2. The sixth section 30 is arranged in a direction substantially perpendicular to the conveying direction D2 with respect to the fifth section 28.

[0020] The first section 20 is disposed in a replacement chamber 32. The replacement chamber 32 replaces the gas in the replacement chamber 32 from atmospheric gas to air, or from air to atmospheric gas.

[0021] The recovery system 10 includes a lid removal device 36 (see Figures 2 and 3), a de-stage device 38 (see Figures 4 to 6), a crusher 40 (see Figure 7), a recovery device 42, an entrance shutter 44, and an exit shutter 46.

[0022] As shown in FIGS. 2 and 3 , the lid removal device 36 is disposed in the second section 22. The lid removal device 36 includes a stopper 50, a pair of side clamps 52, and a suction device 54. The stopper 50 is provided at the front end of the lid removal device 36 in the conveying direction D2 and abuts against the sacks 4 conveyed by the conveying device 14, thereby adjusting the positions of the sacks 4 in the conveying direction D2. After the sacks 4 abut against the stopper 50, the pair of side clamps 52 clamp the sacks 4 arranged in multiple rows in the row direction D1, thereby aligning the sacks 4 in the row direction D1. After the sacks 4 are aligned in the row direction D1, the suction device 54 removes the lids 8 from the sacks 4 by sucking them. The sagger 4 from which the lid 8 has been removed is transported to the third section 24 by the stopper 50 retracting to a position where it does not come into contact with the sagger 4 and the transport rollers 16 rotating.

[0023] As shown in FIGS. 4 to 6 , the de-stack device 38 is disposed in the third section 24. The de-stack device 38 includes a lifter 58 and a pair of clamps 60. The lifter 58 is movable between a position below the conveying rollers 16 and a position above the conveying rollers 16, and raises the stacked sacks 4 to a position above the conveying rollers 16. The pair of clamps 60 clamps the upper sack 4 of the two raised sacks 4 by sandwiching it in the conveying direction D2. After the upper sack 4 has been gripped, the lifter 58 lowers the lower sack 4 and places it on the conveying rollers 16. Next, the lower sack 4 is conveyed to the fourth section 26 by the rotation of the conveying rollers 16. Next, the lifter 58 rises to support the upper sack 4, and the pair of clamps 60 move away from the upper sack 4. Next, the lifter 58 lowers the upper sack 4 and places it on the conveying rollers 16. Finally, the upper sack 4 is conveyed to the fourth section 26 by the rotation of the conveying rollers 16.

[0024] As shown in Fig. 7, the crusher 40 is disposed in the fourth section 26. The crusher 40 crushes the material 6 to be treated by inserting pins into the material 6 in the sagger 4. After the entrance shutter 44 is opened, the sagger 4 is transported to the fifth section 28 by the rotation of the transport rollers 16.

[0025] As shown in Figure 8, the recovery device 42 is disposed in the fifth section 28. In Figures 8, 11 and 12, the sack 4 is dot-hatched to make it easier to see. The recovery device 42 includes a stopper 64, a pair of side clamps 66, a lifter 68, a plurality of (six in this embodiment) first holding parts 70, a second holding member 72, and a recovery container 74.

[0026] The stopper 64 is disposed on the conveying direction D2 side of the multiple sacks 4 carried into the recovery device 42. The stopper 64 is fixed to a base 80 of the lifter 68. The stopper 64 can simultaneously abut against the surfaces of the multiple sacks 4 on the conveying direction D2 side when the multiple sacks 4 are arranged in multiple rows in the row direction D1. The stopper 64 abuts against the multiple sacks 4, thereby adjusting the positions of the multiple sacks 4 in the conveying direction D2.

[0027] The pair of side clamps 66 are spaced apart in the column direction D1, and are configured so that the multiple rows of sacks 4 brought into the recovery device 42 are placed between the pair of side clamps 66. The pair of side clamps 66 are driven by an actuator (not shown) along the column direction D1 and move toward each other, thereby clamping the multiple rows of sacks 4 in the column direction D1. As a result, two adjacent sacks 4 abut against each other in the column direction D1. After aligning the multiple sacks 4, the pair of side clamps 66 move away from each other. As a result, the multiple sacks 4 are released from the pair of side clamps 66 after alignment. In a modified example, the pair of side clamps 66 do not need to move away from each other after aligning the multiple sacks 4. In this case, the multiple sacks 4 continue to be clamped in the column direction D1 by the pair of side clamps 66.

[0028] The lifter 68 is disposed adjacent to the stopper 64 on the conveying direction D2 side. The lifter 68 is configured to simultaneously lift a plurality of saggers 4 when the saggers 4 are arranged in multiple rows. As shown in FIG. 9 , the lifter 68 includes a base 80, a support portion 82, and a pair of connecting members 84.

[0029] The base 80 is movable up and down relative to the conveying device 14. The base 80 has, for example, a plate shape extending in the column direction D1. The base 80 is arranged on the conveying direction D2 side relative to the plurality of saggers 4. The base 80 rotates about a rotation axis AX1 when driven by an actuator (not shown). The rotation axis AX1 is arranged near the upper end of the base 80. The rotation axis AX1 extends in the column direction D1.

[0030] The support unit 82 includes a plurality of support members 88 (12 in this embodiment). One end of each support member 88 is rotatably supported on the base 80. The support members 88 are driven by an actuator (not shown) to rotate about a rotation axis AX2. The rotation axis AX2 extends in the column direction D1. The rotation axis AX2 is substantially parallel to the rotation axis AX1. The support members 88 rotate between a non-support position (position shown in FIG. 9) and a support position (position shown in FIG. 10). When positioned in the non-support position, the support members 88 are spaced apart from the lower surfaces 4b of the plurality of saggers 4 arranged in multiple rows in the column direction D1. As shown in FIG. 10, the support members 88 rotate 90 degrees about the rotation axis AX2 to move from the non-support position to the support position. When positioned in the support position, the support members 88 abut against the lower surfaces 4b of the plurality of saggers 4 arranged in multiple rows in the column direction D1. As a result, multiple sacks 4 are placed on the corresponding support members 88. In a modified example, the support unit 82 may include a single support member 88, which may support all of the multiple sacks 4 arranged in multiple rows in the column direction D1. In this embodiment, as shown in FIG. 11 , the conveying roller 16 in the fifth section 28 includes multiple (six in this embodiment) divided rollers 28a divided in the column direction D1. The rightmost support member 88 is located to the right of the rightmost divided roller 28a, the leftmost support member 88 is located to the left of the leftmost divided roller 28a, and each of the remaining four support members 88 is located between two divided rollers 28a adjacent to each other in the column direction D1. Therefore, the support members 88 can rotate between the non-support position and the support position without interfering with the conveying roller 16. The conveying device 14 further includes a transmission roller 28b, which is rotated by a motor (not shown). Each of the multiple divided rollers 28a is connected to a transmission roller 28b via a chain 28c. When the transmission roller 28b rotates, the chain 28c runs around the divided rollers 28a and the transmission rollers 28b, causing the multiple divided rollers 28a to rotate simultaneously.

[0031] As shown in Fig. 8, a pair of connecting members 84 are arranged at an interval in the column direction D1. One end of the connecting member is fixed to the base 80. The pair of connecting members 84 extend from the base 80 in a direction opposite to the conveying direction D2. A plurality of saggers 4 arranged in multiple rows in the column direction D1 are arranged between the pair of connecting members 84.

[0032] The plurality of first pressing portions 70 are fixed to a base 80. The plurality of first pressing portions 70 are arranged in a row direction D1. The number of the plurality of first pressing portions 70 is the same as the number of the plurality of saggers 4 arranged in the row direction D1 (i.e., the number of rows). As shown in FIG. 9, the first pressing portions 70 are arranged above the saggers 4.

[0033] As shown in FIG. 12, the first pressing unit 70 has a plurality of first claws 92 (two in this embodiment). In a modified example, the first pressing unit 70 may have a single first claw 92. The first claw 92 extends from the base 80 in the direction opposite to the conveying direction D2. The two first claws 92 are spaced apart in the row direction D1. The first claw 92 faces the upper surface 4c of the sack 4. The first claw 92 can abut against the upper surface 4c. The two first claws 92 abut against two of the four corners 4d of the upper surface 4c that are located on the conveying direction D2 side. When the sack 4 is viewed from above, the two first claws 92 do not block the opening 4a of the sack 4.

[0034] As shown in FIG. 8, the second pressing member 72 is disposed between the pair of connecting members 84 in the row direction D1. The second pressing member 72 is rotatably supported at the other end of the pair of connecting members 84. The second pressing member 72 has a plurality of second pressing portions 96 (six in this embodiment). The second pressing portions 96 are aligned in the row direction D1. The number of the second pressing portions 96 is the same as the number of sacks 4 aligned in the row direction D1 (i.e., the number of rows). The second pressing portions 96 are disposed apart from the first pressing portion 70 in the direction opposite to the conveying direction D2.

[0035] As shown in FIG. 9 , when the second holding portion 96 is viewed in the column direction D1, the second holding portion 96 has a substantially L-shape. The second holding portion 96 includes a base 98 and a plurality of (two in this embodiment) second claws 100. In a modified example, the second holding portion 96 may include a single second claw 100. The base 98 is driven by an actuator (not shown) to rotate about a rotation axis AX3 disposed at one end of the base 98. This causes the second holding portion 96 to rotate about the rotation axis AX3. The rotation axis AX3 extends in the column direction D1. The rotation axis AX3 is substantially parallel to the rotation axis AX1. In this embodiment, the bases 98 of the multiple second holding portions 96 are integrally formed. Therefore, the multiple second holding portions 96 simultaneously rotate about the rotation axis AX3. In a modified example, the bases 98 of the multiple second holding portions 96 may be separate bodies. The second claws 100 extend from the other end of the base 98. The second claws 100 are substantially perpendicular to the base 98. As shown in Fig. 12, the two second claws 100 are spaced apart in the column direction D1. The second claws 100 face the first claws 92 in the conveying direction D2.

[0036] As shown in FIG. 9, the second pressing portion 96 rotates between a non-contact position (the position shown in FIG. 9) and a contact position (the position shown in FIG. 13). When the second pressing portion 96 is in the non-contact position, it is positioned below the upper end of the conveying roller 16. Therefore, the second pressing portion 96 does not contact the sack 4 being conveyed by the conveying roller 16. Furthermore, when the second pressing portion 96 is in the non-contact position, the second claw 100 does not face the upper surface 4c of the sack 4. Therefore, when the second pressing portion 96 is in the non-contact position, the second claw 100 does not contact the upper surface 4c. As shown in FIG. 13, the second pressing portion 96 rotates 90 degrees about the rotation axis AX3 to move from the non-contact position to the contact position. When the second pressing portion 96 is in the contact position, the second claw 100 is positioned above the upper surface 4c of the sack 4. 12, when the second pressing portion 96 is in the abutment position, the second claws 100 face the upper surface 4c of the sack 4. Therefore, when the second pressing portion 96 is in the abutment position, the second claws 100 can abut against the upper surface 4c. When the second pressing portion 96 is in the abutment position, the two second claws 100 abut against two of the four corners 4d of the upper surface 4c that are located in the direction opposite to the conveying direction D2. When the sack 4 is viewed from above, the two second claws 100 do not block the opening 4a of the sack 4.

[0037] As shown in Fig. 8, the collection container 74 is disposed adjacent to the lifter 68 on the conveying direction D2 side. The collection container 74 is a container that collects the materials 6 in the saggers 4. The collection container 74 has a collection port 104 that extends in the row direction D1. The width of the collection port 104 in the row direction D1 is greater than the overall width in the row direction D1 of the multiple saggers 4 that are arranged in multiple rows in the row direction D1.

[0038] As shown in FIG. 10 , the recovery device 42 further includes a degassing device 110 and a dust collector 112. The degassing device 110 and the dust collector 112 are fixed to the recovery container 74. In a modified example, the degassing device 110 and the dust collector 112 may be connected to the recovery container 74 via a duct. The degassing device 110 suppresses pressure fluctuations within the recovery container 74, thereby preventing the objects 6 from scattering. The dust collector 112 collects the objects 6 and the like that have scattered within the recovery container 74.

[0039] The flow of collection of the objects 6 by the collection device 42 will be described. As shown in Fig. 8, as the transport rollers 16 rotate, the multiple saggers 4 are transported to the collection device 42 in a state of being arranged in multiple rows in the row direction D1, and come into contact with the stopper 64. This adjusts the positions of the multiple saggers 4 in the transport direction D2.

[0040] Next, the pair of side clamps 66 move in directions approaching each other. As a result, the multiple rows of sacks 4 are clamped between the pair of side clamps 66. As a result, the multiple sacks 4 are aligned in the row direction D1. At this time, as shown in FIG. 9, the first claws 92 are positioned above the upper surfaces 4c of the sacks 4 and face the upper surfaces 4c. The first claws 92 are also spaced apart from the upper surfaces 4c.

[0041] Next, as shown in Figure 13, the second pressing member 72 rotates from the non-contact position to the contact position. That is, the multiple second pressing parts 96 simultaneously rotate from the non-contact position to the contact position. As a result, the second claws 100 are positioned above the upper surface 4c of the sagger 4 and face the upper surface 4c. The second claws 100 are also spaced apart from the upper surface 4c.

[0042] Next, as shown in FIG. 10 , the support member 88 rotates from the non-support position to the support position. As a result, the support member 88 abuts against the lower surfaces 4b of the multiple sacks 4 lined up in the column direction D1, supporting the multiple sacks 4 simultaneously. The support member 88 also abuts the supported multiple sacks 4 against the multiple first claws 92 and the multiple second claws 100. As a result, each of the multiple sacks 4 is sandwiched between the support member 88 and the first claws 92 and between the support member 88 and the second claws 100. As a result, the multiple sacks 4 are gripped by the support member 88 and the multiple first claws 92 and the multiple second claws 100. Next, the lifter 68 rises. As a result, the multiple sacks 4 lined up in the column direction D1 are lifted simultaneously. 12, when the sack 4 is held by the support member 88, the plurality of first claws 92, and the plurality of second claws 100, all of the four corners 4d of the top surface 4c are in contact with the first claws 92 or the second claws 100. Furthermore, when the sack 4 is viewed from above, the opening 4a of the sack 4 is not blocked by the first claws 92 or the second claws 100.

[0043] Next, as shown in FIG. 14 , the lifter 68 rotates 180 degrees around the rotation axis AX1 together with the multiple first pressers 70 and second pressers 72. As a result, the lifter 68, the multiple first pressers 70, and the second pressers 72 are inverted, and the multiple sacks 4 arranged in multiple rows in the column direction D1 are also inverted simultaneously. As a result, the multiple sacks 4 are placed on the collection ports 104 of the collection container 74, and the openings 4a of the multiple sacks 4 face downward. As a result, the objects 6 are simultaneously moved from the multiple sacks 4 to the collection container 74 and collected in the collection container 74. Furthermore, because the width of the collection port 104 in the column direction D1 is greater than the overall width of the multiple sacks 4 arranged in multiple rows in the column direction D1, the objects 6 can be prevented from falling out of the collection container 74. Furthermore, when the lifter 68 is turned upside down, the first pressing portion 70 and the second pressing member 72 are disposed below the sack 4, so that the sack 4 can be prevented from falling.

[0044] Next, the lifter 68 rotates 180 degrees around the rotation axis AX1 together with the plurality of first presser members 70 and second presser members 72, and then descends. Next, the support member 88 rotates from the support position to the non-support position, and then the second presser member 72 rotates from the abutting position to the non-abutting position. As a result, the plurality of sacks 4 are simultaneously placed on the conveying device 14 in a state where they are arranged in multiple rows in the row direction D1. Finally, as shown in FIG. 1, after the exit shutter 46 is opened, the plurality of sacks 4 are conveyed from the fifth section 28 to the sixth section 30 by the rotation of rollers (not shown) different from the conveying rollers 16.

[0045] (effect) In the above embodiment, the recovery device 42 simultaneously recovers the materials 6 from the plurality of saggers 4, with the saggers 4 arranged in multiple rows in the row direction D1. This allows the materials 6 to be recovered from each of the multiple saggers 4 with fewer recovery operations.

[0046] (Correspondence) The second pressing member 72 is an example of a "pressing member."

[0047] (Variation) In one embodiment, the second pressing member 72 is not limited to a configuration that rotates, but may be configured to slide linearly, for example.

[0048] In one embodiment, the support member 88 is not limited to a pivotable configuration, but may be slidable linearly, for example.

[0049] In one embodiment, the recovery device 42 may not include a pair of side clamps 66. In this configuration, among the multiple saggers 4 arranged in the row direction D1, two adjacent saggers 4 may be spaced apart in the row direction D1.

[0050] In one embodiment, the retrieval device 42 may not include a stopper 50 .

[0051] In one embodiment, when the sagger 4 is held by the support member 88, the plurality of first claws 92, and the plurality of second claws 100, two or more of the four corners 4d of the upper surface 4c may be in contact with the first claws 92 or the second claws 100.

[0052] In one embodiment, the collection device 42 does not have to include a plurality of first pressing portions 70.

[0053] Although specific examples of the technology disclosed in this specification have been described in detail above, these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and variations of the specific examples exemplified above. Furthermore, the technical elements described in this specification or drawings exhibit technical utility alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. Furthermore, the technology exemplified in this specification or drawings simultaneously achieves multiple objectives, and achieving one of those objectives itself has technical utility. [Explanation of symbols]

[0054] 2: Heat treatment furnace 4: Sack 4a:Aperture 4b: Bottom surface 4c:Top surface 6: Object to be treated 10: Collection system 14:Transportation device 42: Recovery device 64: Stopper 66: Side clamp 68: Lifter 70: First holding part 72: Second holding member 74: Collection container 82: Support part 84: Connection member 88: Support member 92: First claw 96: Second holding part 100: Second claw 104: Collection port AX1, AX2, AX3: Rotating axes D1: Column direction D2: Transport direction

Claims

1. A recovery system for recovering materials to be treated, a conveying device that conveys the plurality of saggers conveyed from the heat treatment furnace in a state where the saggers are arranged in a plurality of rows in a row direction perpendicular to a conveying direction in which the plurality of saggers are conveyed; a recovery device that simultaneously recovers the materials to be treated from the plurality of saggers transported by the transport device while the plurality of saggers are arranged in the plurality of rows.

2. The recovery device includes: a collection container for collecting the object to be treated; a lifter that lifts the plurality of saggers from the conveying device while the plurality of saggers are arranged in the plurality of rows, The collection system according to claim 1 , wherein the lifter moves the objects to be processed in the lifted saggers to the collection container.

3. Each of the plurality of saggers has an opening at an upper end; The collection system according to claim 2 , wherein the lifter moves the objects to the collection container by inverting the lifted saggers.

4. the recovery device further includes a pressing member that contacts an upper surface of each of the plurality of saggers; The recovery system according to claim 3 , wherein the lifter includes a support member that supports a lower surface of each of the plurality of saggers.

5. the pressing member moves between an abutting position where it abuts against the upper surfaces of the plurality of saggers and a non-abutting position where it does not abut against the upper surfaces of the plurality of saggers; The recovery system according to claim 4 , wherein when the lifter inverts the plurality of saggers while the pressing member is in the abutting position, the pressing member inverts together with the plurality of saggers.

6. The collection system according to claim 2 , wherein a width of the collection opening of the collection container in the row direction is larger than a width of the plurality of saggers in the row direction when the plurality of saggers are arranged in the rows.

7. The recovery system according to claim 1 , wherein the recovery device further comprises a pair of side clamps that align the plurality of saggers in the row direction when the plurality of saggers are arranged in the rows.

8. The recovery system according to claim 1 , further comprising a stopper that can abut against each of the plurality of saggers in the conveying direction and adjusts the position of the plurality of saggers in the conveying direction.

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