Lithium iron phosphate sintered powder discharging device

Abstract

The invention discloses a lithium iron phosphate sintered powder discharging device, and relates to the technical field of material conveying, the lithium iron phosphate sintered powder discharging device comprises a transferring mechanism, the transferring mechanism comprises a first linear stroke mechanism arranged on a U-shaped seat, a plurality of sliding blocks arranged in an array and a plurality of inserting plates, the first linear stroke mechanism is connected with the multiple sliding blocks, and two supporting plates are arranged at the tops of the sliding blocks; a rotating shaft is rotationally arranged between the two supporting plates, and one end of the rotating shaft is fixedly connected with the corresponding inserting plate. The conveying table conveys a plurality of saggars in the direction of the receiving box, a window is formed in one side of the conveying tail end of the conveying table, and inserting grooves are formed in the sides, facing the window, of the saggars; a second linear travel mechanism is arranged in the supporting seat, is connected with the U-shaped seat and is used for moving the U-shaped seat, so that the inserting plates are inserted into the corresponding inserting grooves; the first linear stroke mechanism is used for horizontally moving the multiple saggars at the window to the position above the material receiving box, and the turnover mechanism is arranged on the U-shaped base, connected with the multiple rotating shafts and used for driving the multiple rotating shafts. According to the scheme, multiple saggars can be turned over and discharged at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of material transportation, especially to the turnover discharging of materials, and specifically relates to a discharging device for lithium iron phosphate sintered powder. Background Art

[0002] The preparation process of lithium iron phosphate is as follows: Mix raw materials to form precursor powder; Load the precursor powder into a sagger; Level the precursor powder, and then use criss-cross knives to divide it into multiple pieces; Transfer multiple saggers to a kiln for sintering in sequence; After sintering, transfer the saggers to a turnover discharging device in sequence, and use the turnover discharging device to pour out the sintered powder in the sagger. The problem is that the existing turnover discharging device can only hold one sagger at a time and turn it over for discharging, and cannot turn over and discharge multiple saggers simultaneously. Summary of the Invention

[0003] To solve the deficiencies of the existing technology, the present invention provides a discharging device for lithium iron phosphate sintered powder, which can turn over and discharge multiple saggers simultaneously.

[0004] To achieve the purpose of the present invention, the following scheme is proposed:[[]]END]] A discharging device for lithium iron phosphate sintered powder includes a conveying table, a turnover mechanism, a transfer mechanism, and a receiving box.

[0005] The transfer mechanism includes a first linear travel mechanism arranged on a U-shaped seat, a plurality of sliders arranged in an array, and a plurality of inserting plates. The first linear travel mechanism is connected to multiple sliders simultaneously. Two support plates are provided on the top of the slider. A rotating shaft is rotatably arranged between the two support plates. One end of the rotating shaft penetrates through the support plate and is fixedly connected to the corresponding inserting plate. The conveying table is arranged at the outer end of the receiving box and is used to convey multiple saggers towards the direction where the receiving box is located. A window is provided on one side of the tail end of the conveying table for avoiding a plurality of inserting plates. The bottom surface of the window is higher than the table surface of the conveying table. A slot is provided on one side of the sagger facing the window. The U-shaped seat is arranged on the top of the support seat. A second linear travel mechanism is arranged in the support seat. The second linear travel mechanism is connected to the U-shaped seat and is used to move the U-shaped seat so that the inserting plate is inserted into the corresponding slot. A first inclined surface is provided on the outer end of the slot and on the side facing the receiving box. A second inclined surface is provided at the end of the inserting plate. When the second inclined surface contacts and presses the corresponding first inclined surface, it is used to expand the distance between adjacent two saggers. The first linear travel mechanism is used to translate multiple saggers at the window above the receiving box. The turnover mechanism is arranged on the U-shaped seat and is connected to multiple rotating shafts to drive the multiple rotating shafts.

[0006] The beneficial effects of the present invention are as follows: The structure of the existing sagger is improved, and a special-shaped slot is provided on one side thereof; the distance between two adjacent saggers can be adjusted by the extrusion of the inclined surface between the insertion plate and the slot. At this time, the insertion plate plays a role in adjusting the distance between the saggers, so as to realize the turnover discharging of the saggers subsequently; after the insertion plate is completely inserted into the corresponding slot, the insertion plate plays a role in carrying and transporting, and the first linear travel mechanism can be used to translate multiple insertion plates and multiple saggers above the receiving box, and then the turnover mechanism is used to turn over multiple insertion plates, so as to realize the turnover discharging of multiple saggers, and the structural cooperation is very ingenious. Brief Description of the Drawings

[0007] Figure 1 Shows the structure diagram of the discharging device; Figure 2 Shows the top view of the discharging device; Figure 3 Shows the structure diagram of the sagger; Figure 4 Shows the schematic diagram of the slot of the sagger; Figure 5 Shows the connection structure diagram of the slider, the regulating rod, the guiding rod, the worm gear and the worm; Figure 6 Shows the front view of the discharging device with a retaining bar and a pressing rod; Figure 7 Shows the state diagram of the pressing rod causing the retaining bar to turn over; Figure 8 Shows the state diagram when the insertion plate is just inserted into the slot; Figure 9 Shows the state diagram when the insertion plate is completely inserted into the slot; Figure 10 Shows the state diagram when multiple saggers are moved above the receiving box; Figure 11 Shows the state diagram of the sagger turning over and discharging; Figure 12 Shows the right view of the conveying channel conveying the sagger; Reference Numerals: Conveying Table - 1, Window - 11, Extension Plate - 12, Retaining Bar - 13, Turning-over Mechanism - 2, Motor - 21, Regulating Rod - 22, Main Rod - 221, Ridge - 222, Worm Gear - 23, Worm - 24, Transfer Mechanism - 3, First Linear Travel Mechanism - 31, Slide Block - 32, Support Plate - 321, Rotating Shaft - 322, Groove - 323, Insertion Plate - 33, Second Inclined Surface - 331, U-shaped Seat - 34, Guiding Rod - 341, Second Linear Travel Mechanism - 36, Inverted L-shaped Plate - 37, Pressing Rod - 38, Support Seat - 39, Sagger - 4, Slot - 41, First Inclined Surface - 411, Receiving Box - 5, Conveying Channel - 6, Conveying Wheel - 61. Detailed Description of the Invention

[0008] AsFigure 1 As shown in the figure, this embodiment provides a discharging device for lithium iron phosphate sintered powder, including a conveying table 1, a flipping mechanism 2, a transfer mechanism 3, and a receiving box 5.

[0009] Specifically, as Figure 1 shown, the conveying table 1 is located at the outer end of the receiving box 5. The tabletop of the conveying table 1 is higher than that of the receiving box 5. The conveying table 1 is used to convey a plurality of crucibles 4 in the direction of the receiving box 5. The crucibles 4 contain sintered materials. There is a window 11 on one side of the tail end of the conveying table 1. The bottom surface of the window 11 is higher than the tabletop of the conveying table 1. The purpose of this design is that at the window 11, the inner wall of the conveying table 1 still has a limiting effect on the crucible 4.

[0010] Specifically, as Figure 1 、 Figure 3 、 Figure 4 shown, a slot 41 is provided on one side of the crucible 4 facing the window 11. A first inclined surface 411 is provided on the outer end of the slot 41 and on the side facing the receiving box 5. The width of the outer end of the slot 41 is greater than that of the inner end of the slot 41 (as Figure 4 shown).

[0011] Specifically, as Figures 2 - 4 shown, the transfer mechanism 3 includes a U-shaped seat 34, a first linear travel mechanism 31, three sliders 32, three plug plates 33, a support seat 39, and a second linear travel mechanism 36. The second linear travel mechanism 36 is arranged in the support seat 39. The U-shaped seat 34 is arranged on the top of the support seat 39, and the bottom surface of the U-shaped seat 34 is closely attached to the support seat 39. The second linear travel mechanism 36 is connected to the U-shaped seat 34 and is used to move the U-shaped seat 34 in the direction of the conveying table 1. The moving direction of the U-shaped seat 34 is perpendicular to the conveying direction of the conveying table 1. The first linear travel mechanism 31 is arranged on the top of the U-shaped seat 34. The three sliders 32 are arranged in an array along the long axis direction of the first linear travel mechanism 31. The first linear travel mechanism 31 is simultaneously connected to the three sliders 32 and is used to horizontally move the three sliders 32. The moving direction of the three sliders 32 is parallel to the conveying direction of the conveying table 1. The bottom surface of the slider 32 is closely attached to the U-shaped seat 34. Two support plates 321 are provided on the top of the slider 32. A rotating shaft 322 is rotatably arranged between the two support plates 321. One end of the rotating shaft 322 penetrates through the support plate 321 and is fixedly connected to the corresponding plug plate 33. The plug plate 33 horizontally points to the window 11. The window 11 is used to avoid the three plug plates 33. A second inclined surface 331 is provided on the end of the plug plate 33 and on the side facing the receiving box 5. When the plug plate 33 is inserted into the corresponding slot 41 and the second inclined surface 331 presses against the corresponding first inclined surface 411, it is used to expand the distance between two adjacent crucibles 4 so as to subsequently flip and discharge the crucible 4 on the plug plate 33.

[0012] It should be noted here that both the first linear travel mechanism 31 and the second linear travel mechanism 36 are conventional mechanisms. For example, a telescopic rod is driven by a cylinder or an oil cylinder, and the structure and principle thereof will not be elaborated in detail in the present invention.

[0013] Specifically, the flipping mechanism 2 is arranged on the U-shaped seat 34, and the flipping mechanism 2 is connected to three rotating shafts 322 for driving the three rotating shafts 322.

[0014] The usage method is as follows: S1. The conveying table 1 conveys a plurality of saggers 4 towards the direction where the receiving box 5 is located, and stops the saggers 4 at a specific position, and note that the slots 41 of the saggers 4 all face the side of the window 11.

[0015] S2. The second linear travel mechanism 36 moves the U-shaped seat 34 towards the direction where the conveying table 1 is located. The first linear travel mechanism 31, the three sliders 32 and the three inserting plates 33 on the U-shaped seat 34 move as a whole with the U-shaped seat 34. After the inserting plates 33 pass through the window 11, they gradually insert into the corresponding slots 41. Taking Figure 8 as an example, there are three saggers 4 at the window 11. The second inclined surface 331 of the left inserting plate 33 first contacts the first inclined surface 411 of the left saggar 4. At this time, the second inclined surface 331 of the middle inserting plate 33 has not contacted the first inclined surface 411 of the middle saggar 4, and the second inclined surface 331 of the right inserting plate 33 has not contacted the first inclined surface 411 of the right saggar 4. More precisely, at this time, the right inserting plate 33 is directly aligned with the inner end of the slot 41 of the right saggar 4. In the following process, the left inserting plate 33 first squeezes the left saggar 4 to cause the left saggar 4 to move leftward, and then the middle inserting plate 33 squeezes the middle saggar 4 to cause the middle saggar 4 to move leftward, and the moving distance of the left saggar 4 is greater than that of the middle saggar 4, while the right inserting plate 33 directly inserts into the inner end of the slot 41 of the right saggar 4. In Figure 9 , at this time, the three inserting plates 33 are completely inserted into the corresponding slots 41, and there is a gap between adjacent two saggers 4.

[0016] S3. The first linear travel mechanism 31 moves the three sliders 32 and the three inserting plates 33 towards the direction where the receiving box 5 is located until the three saggers 4 are translated above the receiving box 5, and the state is as Figure 10 shown.

[0017] S4. The flipping mechanism 2 simultaneously drives the three rotating shafts 322 to cause the three saggers 4 to flip and discharge materials.

[0018] S5. The three saggers 4 are separated from the inserting plates 33 by a pushing mechanism or other means.

[0019] S6. The conveying table 1 continues to convey a plurality of saggers 4 towards the direction where the receiving box 5 is located. At the same time, the second linear travel mechanism 36 resets the U-shaped seat 34, and the first linear travel mechanism 31 resets the three sliders 32, and the state returns toFigure 1 , start the next round of loop.

[0020] In step S1, the conveying table 1 stops the sagger 4 at a specific position, and the specific implementation method is as follows: As Figure 6 shown, a stop bar 13 is provided at the end face of the conveying end of the conveying table 1. The bottom end of the stop bar 13 is rotatably connected to the conveying table 1. A torsion spring is provided at the rotation connection of the stop bar 13 and the conveying table 1 to keep the stop bar 13 in a vertical state. The stop bar 13 is used to stop the sagger 4 on the conveying table 1. A horizontal pressure bar 38 is provided on the inverted L-shaped plate 37 corresponding to the position of the stop bar 13. The top surface of the pressure bar 38 is flush with the tabletop of the conveying table 1. When the insertion plate 33 moves towards the direction where the sagger 4 is located, the pressure bar 38 is used to make the stop bar 13 flip towards the extension plate 12, thereby releasing the restriction of the stop bar 13 on the sagger 4.

[0021] In addition, note two points: First, when the insertion plate 33 moves towards the direction where the sagger 4 is located, before the second inclined surface 331 of the insertion plate 33 contacts the corresponding first inclined surface 411, the stop bar 13 has been flipped to the horizontal state (as Figure 8 shown), which is convenient for adjusting the spacing of the saggers 4 next; Second, when the three insertion plates 33 are completely inserted into the corresponding slots 41, the adjustment of the spacing of the three saggers 4 is completed. At this time, there is a gap between two adjacent saggers 4, and the width of this gap is smaller than the thickness of the stop bar 13. The purpose of this design is: during the process of the three saggers 4 translating towards the receiving box 5, even if the pressure bar 38 has disengaged from the stop bar 13, the stop bar 13 will be pressed by these three saggers 4, and the stop bar 13 will not flip up from the gap between these three saggers 4 until these three saggers 4 completely leave the conveying table 1, and the stop bar 13 will flip up under the action of the torsion spring and return to the vertical state.

[0022] In step S3, during the process of translating the sagger 4 from the conveying table 1 to above the receiving box 5, in order to further improve the stability of the sagger 4 during translation, the following measures are taken in this embodiment: First, as Figure 5 , Figure 6 , Figure 9 shown, the insertion plate 33 is connected to the corresponding rotating shaft 322 through the inverted L-shaped plate 37, and the insertion plate 33 is connected to the end face of the horizontal section of the inverted L-shaped plate 37. The outer wall of the vertical section of the inverted L-shaped plate 37 is connected to the rotating shaft 322. The thickness of the end face of the horizontal section of the inverted L-shaped plate 37 is greater than the height of the slot 41. When the insertion plate 33 is completely inserted into the corresponding slot 41, the end face of the horizontal section of the inverted L-shaped plate 37 closely adheres to the sagger 4; Second, as Figure 2 , Figure 10As shown in the figure, an extension plate 12 is provided on the end face of the conveying end of the conveying table 1. The extension plate 12 extends horizontally to the material receiving box 5, and the extension plate 12 is located above the material receiving box 5. During the process of the first linear travel mechanism 31 moving the three crucibles 4 above the material receiving box 5, the side of the crucible 4 facing away from the window 11 is closely attached to the extension plate 12.

[0023] Through the restriction of the crucible 4 by the end face of the horizontal section of the inverted L-shaped plate 37 and the extension plate 12, the stability of the crucible 4 during translation is greatly improved, and the stability of the crucible 4 during the process of flipping and discharging can also be improved; as Figure 11 shown in the figure, after the crucible 4 is flipped 180°, the position of the crucible 4 is lower than the extension plate 12, which is convenient for the next step of detaching the crucible 4.

[0024] In step S4, the specific implementation method of the flipping mechanism 2 is as follows: as Figure 2 、 Figure 5 shown in the figure, the flipping mechanism 2 includes a motor 21, a regulating rod 22, three worm wheels 23 and three worm shafts 24. The regulating rod 22 is rotatably arranged between the two inner walls of the U-shaped seat 34. The motor 21 is arranged at the outer end of the U-shaped seat 34. The output shaft of the motor 21 is used to drive the regulating rod 22. The regulating rod 22 includes a main rod 221 and two convex strips 222 arranged on the side wall of the main rod 221. The regulating rod 22 passes through the first through holes of the three sliders 32. The maximum outer diameter of the regulating rod 22 is greater than the inner diameter of the first through holes, so as to ensure that the regulating rod 22 can rotate in the first through holes, and the sliders 32 can also slide along the regulating rod 22. In order to further improve the stability of the sliders 32, a guide rod 341 is arranged between the two inner walls of the U-shaped seat 34. The guide rod 341 passes through the second through holes of the three sliders 32. The three worm shafts 24 are coaxially and slidably arranged on the regulating rod 22. A groove 323 is arranged at the top of the slider 32. The worm shaft 24 is limited in the corresponding groove 323. The worm wheel 23 is coaxially and fixedly arranged on the corresponding rotating shaft 322. The worm wheel 23 meshes with the corresponding worm shaft 24.

[0025] The principle of the flipping mechanism 2 is as follows: when the three inserting plates 33 are completely inserted into the corresponding slots 41, and the first linear travel mechanism 31 moves the three sliders 32 and the three inserting plates 33 in the direction of the material receiving box 5, the three worm shafts 24 and the three worm wheels 23 will move along the regulating rod 22 together with the sliders 32; when the three inserting plates 33 and the three crucibles 4 are translated above the material receiving box 5, the motor 21 drives the regulating rod 22. The regulating rod 22 will not cause the sliders 32 to rotate, but the regulating rod 22 will cause the three worm shafts 24 to rotate synchronously. The worm shafts 24 will then cause the worm wheels 23 and the inserting plates 33 to rotate, realizing the flipping and discharging of the three crucibles 4.

[0026] In step S5, the detachment of the three crucibles 4 from the inserting plates 33 is specifically implemented as follows: as Figures 10 - 12As shown, the device further includes three conveying channels 6 arranged in parallel. The conveying channels 6 are provided on the support frame. The conveying channels 6 are located outside the receiving box 5. The bottom of the conveying channels 6 is suspended. Conveying wheels 61 are arrayed on both inner walls thereof. The operating principle of the conveying wheels 61 belongs to the prior art and will not be elaborated in detail here. The conveying direction of the conveying channels 6 is perpendicular to the conveying direction of the conveying table 1, and is used to receive and convey the fired crucibles 4, and one crucible 4 corresponds to one conveying channel 6.

[0027] The method is as follows: Above the receiving box 5, when the three crucibles 4 are turned over for discharging, the openings of the crucibles 4 face downward, and the crucibles 4 are lower than the bottom surface of the extension plate 12 (as Figure 11 shown); then the second linear travel mechanism 36 is used to continue moving the U-shaped seat 34 in the direction of the conveying table 1. The first linear travel mechanism 31, the three sliders 32 and the three inserting plates 33 on the U-shaped seat 34 move as a whole with the U-shaped seat 34 until the crucible 4 is delivered into the corresponding conveying channel 6. The conveying wheels 61 start to operate to separate the crucible 4 from the inserting plate 33.

[0028] As mentioned above, the bottom of the conveying channel 6 is suspended, and the crucible 4 in the conveying channel 6 is in a state with the opening facing downward. The purpose of this design is that there may be residual materials on the inner wall of the crucible, which need to be cleaned. With the opening of the crucible 4 facing downward, it is convenient to use cleaning equipment to clean the inner wall of the crucible 4.

[0029] The above embodiments are only used to illustrate the technical ideas and features of the present invention, and do not represent the only or limit the present invention. Those skilled in the art should understand that without departing from the scope of the present invention, various changes or equivalent substitutions made to the present invention all fall within the scope of protection of the present invention.

Claims

1. A lithium iron phosphate sintered powder discharging device, characterized in that: It comprises a conveying platform (1), a turning mechanism (2), a transfer mechanism (3), and a material receiving box (5); The transfer mechanism (3) comprises a first linear travel mechanism (31) arranged on a U-shaped seat (34), a plurality of sliders (32) arranged in an array, and a plurality of plug plates (33); the first linear travel mechanism (31) is connected to the plurality of sliders (32) at the same time; two support plates (321) are arranged on the top of the slider (32); a rotating shaft (322) is rotatably arranged between the two support plates (321); one end of the rotating shaft (322) passes through the support plate (321) and is fixedly connected to the corresponding plug plate (33); The conveying platform (1) is arranged at the outer end of the material receiving box (5) and is used to convey a plurality of saggers (4) toward the direction of the material receiving box (5). A window (11) is provided on one side of the conveying tail end of the conveying platform (1) for avoiding a plurality of plug plates (33). The bottom surface of the window (11) is higher than the table surface of the conveying platform (1). A slot (41) is provided on the side of the saggers (4) facing the window (11). The U-shaped seat (34) is arranged on the top of the support seat (39), and a second linear travel mechanism (36) is arranged in the support seat (39). The second linear travel mechanism (36) is connected to the U-shaped seat (34) and is used to move the U-shaped seat (34) so ​​that the plug plate (33) is inserted into the corresponding slot (41); A first inclined surface (411) is provided at the outer end of the slot (41) and at a side facing the material receiving box (5), and a second inclined surface (331) is provided at the end of the insert plate (33). When the second inclined surface (331) contacts and presses the corresponding first inclined surface (411), the distance between two adjacent saggers (4) is enlarged. The first linear travel mechanism (31) is used to translate the plurality of saggers (4) at the window (11) to above the material receiving box (5), and the turning mechanism (2) is arranged on the U-shaped seat (34), which is connected to the plurality of rotating shafts (322) and is used to drive the plurality of rotating shafts (322).

2. The lithium iron phosphate sintered powder discharging device according to claim 1, characterized in that: The turning mechanism (2) comprises a motor (21), a regulating rod (22), a plurality of worm wheels (23) and a plurality of worms (24); the regulating rod (22) is rotatably arranged between two inner walls of a U-shaped seat (34); the motor (21) is arranged at the outer end of the U-shaped seat (34); its output shaft is used to drive the regulating rod (22); the regulating rod (22) comprises a main rod (221) and two convex strips (222) arranged on its side wall; the regulating rod (22) passes through the first through holes of all sliders (32); the maximum outer diameter of the regulating rod (22) is greater than the inner diameter of the first through hole; the plurality of worms (24) are coaxially and slidably arranged on the regulating rod (22); a groove (323) is arranged at the top of the slider (32); the worms (24) are limited in the corresponding grooves (323); the worm wheels (23) are coaxially and fixedly arranged on the corresponding rotating shaft (322); the worm wheels (23) are meshed with the corresponding worms (24).

3. The lithium iron phosphate sintered powder discharging device according to claim 1, characterized in that: The bottom surface of the slider (32) is in close contact with the U-shaped seat (34), a guide rod (341) is provided between two inner walls of the U-shaped seat (34), and the guide rod (341) passes through the second through holes of all the sliders (32).

4. The lithium iron phosphate sintered powder discharging device according to claim 1, characterized in that: The inserting plate (33) is connected to the corresponding rotating shaft (322) through the inverted L-shaped plate (37), and the inserting plate (33) is connected to the end face of the transverse section of the inverted L-shaped plate (37), and the outer wall of the longitudinal section of the inverted L-shaped plate (37) is connected to the rotating shaft (322), and the thickness of the end face of the transverse section of the inverted L-shaped plate (37) is greater than the height of the slot (41). When the inserting plate (33) is completely inserted into the corresponding slot (41), the end face of the transverse section of the inverted L-shaped plate (37) is closely attached to the sagger (4).

5. The lithium iron phosphate sintered powder discharging device according to claim 4, characterized in that: An extension plate (12) is provided on the end surface of the conveying tail end of the conveying platform (1). When the first linear travel mechanism (31) translates the plurality of saggers (4) to above the material receiving box (5), the side of the saggers (4) facing away from the window (11) is in close contact with the extension plate (12).

6. The lithium iron phosphate sintered powder discharging device according to claim 5, characterized in that: The end surface of the conveying tail end of the conveying platform (1) is provided with a stop bar (13), the bottom end of the stop bar (13) is rotatably connected to the conveying platform (1), and a torsion spring is provided at the rotation connection between the two, which is used to keep the stop bar (13) in a vertical state. The stop bar (13) is used to stop the sagger (4) on the conveying platform (1), and a horizontal pressure rod (38) is provided on the inverted L-shaped plate (37) at a position corresponding to the stop bar (13), and the top surface of the pressure rod (38) is flush with the table surface of the conveying platform (1). When the plug plate (33) moves in the direction of the sagger (4), the pressure rod (38) is used to flip the stop bar (13) in the direction of the extension plate (12).

7. The lithium iron phosphate sintered powder discharging device according to claim 6, characterized in that: When the inserting plate (33) is completely inserted into the corresponding slot (41), a gap exists between two adjacent saggers (4), and the width of the gap is smaller than the thickness of the blocking bar (13).

8. The lithium iron phosphate sintered powder discharging device according to claim 6, characterized in that: The invention also comprises a plurality of parallel conveying channels (6), which are arranged on a support frame and located outside a material receiving box (5). The bottom of the conveying channel (6) is suspended in the air, and conveying wheels (61) are arranged on the inner walls on both sides thereof. Above the material receiving box (5), when the plurality of saggers (4) are turned over and discharged by using the turning mechanism (2), the saggers (4) are lower than the bottom surface of the extension plate (12), and one sagger (4) corresponds to one conveying channel (6), which is used to receive and convey the saggers (4).

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