Material raking mechanism, material turning device and disc dryer

Abstract

The utility model provides a material raking mechanism, a material turning device and a disc dryer. The raking mechanism comprises a raking frame assembly, an anti-resistance balancing weight and wear-resistant raking blades; the anti-resistance balancing weight is fixedly installed at the end, away from the rake rod, of the rake frame assembly. Part of the anti-resistance balancing weight extends out of the two opposite sides of the harrow frame assembly, and an abutting limiting face is formed. The abrasion-resistant harrow blades are attached to the abutting limiting face and fixedly connected with the harrow frame assembly, when resistance borne by the abrasion-resistant harrow blades is increased, the abrasion-resistant harrow blades can transmit the resistance to the resistance balancing weight through the abutting limiting face, and the resistance balancing weight limits the positions of the abrasion-resistant harrow blades through the abutting limiting face by means of the gravity of the resistance balancing weight. By means of the technical scheme, the situation that the wear-resisting rake blades twist or turn over can be reduced, so that the wear-resisting rake blades and the materials are kept at a fixed angle, the stir-frying effect of the wear-resisting rake blades on the battery precursor materials is more stable, and finally the influence on the drying efficiency of the battery precursor materials is reduced.

Description

Technical Field

[0001] This disclosure relates to the technical field of battery precursor production, and in particular to a rake mechanism, a turning device, and a disc dryer. Background Technology

[0002] Battery precursor materials need to be dried before formal application. Currently, most manufacturers use a rake structure for disc dryers, as disclosed in Chinese patent document CN220871406U, to stir-fry the battery precursor materials. However, because battery precursor materials with a moisture content of 5% to 20% tend to accumulate during the stirring process, the resistance generated by this accumulation can cause the rake blades of the aforementioned rake structure to twist and rotate relative to the rake frame body at a certain angle. This reduces the stirring effect of the rake blades on the battery precursor materials, ultimately resulting in a decrease in the drying efficiency of the battery precursor materials. Utility Model Content

[0003] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide a rake mechanism, a turning device and a disc dryer that provide stable material turning effect and high baking efficiency.

[0004] The purpose of this disclosure is achieved through the following technical solution:

[0005] A material scraping mechanism, comprising:

[0006] A rake frame assembly for mounting on a rake handle;

[0007] An anti-resistance counterweight is fixedly installed on the rake frame assembly at one end away from the rake rod; a portion of the anti-resistance counterweight extends out of opposite sides of the rake frame assembly and forms a resisting and limiting surface;

[0008] The wear-resistant rake blade is fitted to the supporting and limiting surface and is fixedly connected to the rake frame assembly; the wear-resistant rake blade is used to stir-fry materials.

[0009] In some embodiments, the rake frame assembly includes a rigid frame and an elastic frame connected together, the elastic frame being connected to the rake rod; the resistance counterweight is fixedly mounted on the rigid frame, and the wear-resistant rake blade is fixedly connected to the rigid frame.

[0010] In some embodiments, the rigid frame includes a horizontal main plate and a vertical end plate; the horizontal main plate is connected to the elastic frame; the vertical end plate is fixedly installed on the horizontal main plate at one end away from the elastic frame and is perpendicular to the horizontal main plate; the resistance counterweight and the wear-resistant rake blade are locked and fixed to the vertical end plate by a first fastening component and together abut against the horizontal main plate.

[0011] In some embodiments, the elastic frame includes an elastic support bar and two hoops; the middle of the elastic support bar is bent to form an installation bend; the installation bend is locked and fixed to the transverse main board by a second fastening assembly; each of the hoops is fixedly disposed at one end of the elastic support bar and is used to be sleeved on the rake rod.

[0012] In some embodiments, the second fastening assembly includes an adjusting bolt and a locking nut, and the transverse main plate has an adjusting hole; the screw of the adjusting bolt passes through the adjusting hole; the mounting hook is provided on the peripheral wall of the screw; the locking nut is threadedly connected to the end of the screw and locks and fixes the elastic support bar and the transverse main plate.

[0013] A material turning device includes a drive shaft, a rake bar, and a rake mechanism according to any of the above embodiments; the drive shaft is used to connect to the power output end of a rotary driver; the rake bar is fixedly mounted on the drive shaft, and the rake frame assembly is mounted on the rake bar.

[0014] In some embodiments, the rake bar is fitted with a wear-resistant sleeve on its outer side, and the rake frame assembly is connected to the outer wall of the wear-resistant sleeve.

[0015] In some embodiments, the rake rod is provided with a limiting pin, and the wear-resistant sheath is provided with a positioning hole; the limiting pin passes through and engages with the positioning hole.

[0016] In some embodiments, the number of the rake mechanisms is at least two, and the at least two rake mechanisms are spaced apart along the length of the rake bar.

[0017] A disc dryer includes an outer cylinder, a heating disc, a rotary drive, and a material turning device according to any of the above embodiments; the heating disc is disposed inside the outer cylinder and is used to hold and bake the material; the rotary drive is fixed at the center of the heating disc, and the transmission shaft is connected to the power output end of the rotary drive; the number of rakes is at least two; each rake is spaced apart and mounted on the peripheral wall of the transmission shaft, and extends radially along the heating disc; each rake mechanism located on the rake is slidably abutted against the heating disc.

[0018] Compared with the prior art, this disclosure has at least the following advantages:

[0019] The aforementioned rake mechanism, with its wear-resistant rake blades attached to the supporting and limiting surface of the resistance-resistant counterweight, allows the wear-resistant rake blades to transmit increased resistance to the resistance-resistant counterweight through the supporting and limiting surface when the resistance increases. The resistance-resistant counterweight then uses its own weight to limit the position of the wear-resistant rake blades through the supporting and limiting surface, reducing the occurrence of twisting or flipping of the wear-resistant rake blades. This maintains a fixed angle between the wear-resistant rake blades and the material, resulting in a more stable stirring effect of the wear-resistant rake blades on the battery precursor material, ultimately reducing the impact on the drying efficiency of the battery precursor material. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is an exploded view of a material scraping mechanism according to an embodiment of this disclosure;

[0022] Figure 2 for Figure 1 The diagram shows a cross-sectional view of the rake mechanism.

[0023] Figure 3 for Figure 1 The enlarged view shown at point A in the middle;

[0024] Figure 4 This is a schematic diagram of the structure of a material turning device according to another embodiment of the present disclosure;

[0025] Figure 5 for Figure 4 The enlarged view shown at point B in the middle;

[0026] Figure 6 This is a cross-sectional view of a disc dryer according to yet another embodiment of the present disclosure.

[0027] Figure label:

[0028] 10. Tilting device; 20. Outer cylinder; 30. Heating plate;

[0029] 100. Rake mechanism;

[0030] 110. Rake frame assembly; 1110. Rigid frame; 1111. Horizontal main plate; 1112. Vertical end plate; 1120. Flexible frame; 1121. Flexible support bar; 1101. Installation bend; 1122. Hoop;

[0031] 120. Resistance counterweight; 1210. Supporting and limiting surface;

[0032] 130. Wear-resistant rake blades; 1310. Turning section;

[0033] 140. First fastening assembly;

[0034] 150. Second fastening assembly; 1510. Adjusting bolt; 1520. Locking nut;

[0035] 200. Drive shaft; 300. Rake rod; 310. Limit pin; 400. Wear-resistant sleeve; 401. Positioning hole. Detailed Implementation

[0036] To facilitate understanding of this disclosure, a more complete description will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the present disclosure. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure.

[0037] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0039] To better understand the technical solutions and beneficial effects of this disclosure, the following detailed description is provided in conjunction with specific embodiments:

[0040] Please refer to the following: Figure 1 and Figure 2One embodiment of the rake mechanism 100 includes a rake frame assembly 110, a resistance counterweight 120, and a wear-resistant rake blade 130. The rake frame assembly 110 is mounted on a rake rod 300. The resistance counterweight 120 is fixedly mounted on the rake frame assembly 110 at one end away from the rake rod 300. A portion of the resistance counterweight 120 extends out of opposite sides of the rake frame assembly 110 and forms a support limiting surface 1210. The wear-resistant rake blade 130 is disposed in contact with the support limiting surface 1210 and is fixedly connected to the rake frame assembly 110. The wear-resistant rake blade 130 is used to stir-fry the material.

[0041] It is understandable that, since the wear-resistant rake blade 130 is attached to the abutting and limiting surface 1210 of the resistance counterweight 120, when the resistance of the wear-resistant rake blade 130 increases, the wear-resistant rake blade 130 can transmit the resistance to the resistance counterweight 120 through the abutting and limiting surface 1210. The resistance counterweight 120 uses its own weight to limit the position of the wear-resistant rake blade 130 through the abutting and limiting surface 1210, which can reduce the occurrence of twisting or flipping of the wear-resistant rake blade 130, thereby keeping the wear-resistant rake blade 130 at a fixed angle with the material, so that the stirring effect of the wear-resistant rake blade 130 on the battery precursor material is more stable, and ultimately reduces the impact on the drying efficiency of the battery precursor material.

[0042] Please see Figure 1 In some embodiments, a portion of the edge of the wear-resistant rake blade 130 extends to form a retaining and limiting surface 1210, thus forming a turning portion 1310. The turning portion 1310 is used to contact and turn the material. It is understood that because the turning portion 1310 is formed by the retaining and limiting surface 1210 extending from a portion of the edge of the wear-resistant rake blade 130, contact with the material by the turning portion 1310 can keep the resistance counterweight 120 away from the material, thereby reducing wear between the resistance counterweight 120 and the material. If the resistance counterweight 120 is a metal part, the amount of metal foreign matter introduced can also be reduced. In other embodiments, the wear-resistant rake blade 130 is a polytetrafluoroethylene (PTFE) rake blade. PTFE rake blades have a low coefficient of friction, making them less prone to wear when in contact with the material, and wear will not introduce metal foreign matter. Of course, the specific material of the wear-resistant rake blade 130 is not limited here, and those skilled in the art can make other choices as needed.

[0043] Please see Figure 2In some embodiments, the rake frame assembly 110 includes a rigid frame 1110 and an elastic frame 1120 connected together. The elastic frame 1120 is used to connect to the rake rod 300. The resistance counterweight 120 is fixedly installed on the rigid frame 1110, and the wear-resistant rake blade 130 is fixedly connected to the rigid frame 1110. It can be understood that since the rigid frame 1110 is connected to the rake rod 300 through the elastic frame 1120, and the wear-resistant rake blade 130 is fixedly connected to the rigid frame 1110, when the material turning part 1310 of the wear-resistant rake blade 130 experiences excessive resistance, the resistance acts on the rigid frame 1110, causing the elastic frame 1120 to deform. This allows the wear-resistant rake blade 130 to be lifted by the accumulated material, reducing the contact area and lowering the resistance, ultimately reducing the occurrence of the wear-resistant rake blade 130 breaking due to excessive resistance.

[0044] Please see Figure 2 In some embodiments, the rigid frame 1110 includes a horizontal main plate 1111 and a vertical end plate 1112; the horizontal main plate 1111 is connected to the elastic frame 1120; the vertical end plate 1112 is fixedly installed on the horizontal main plate 1111 at one end away from the elastic frame 1120 and is perpendicular to the horizontal main plate 1111; the resistance counterweight 120 and the wear-resistant rake blade 130 are locked and fixed to the vertical end plate 1112 by the first fastening assembly 140 and together abut against the horizontal main plate 1111. It is understood that because the resistance counterweight 120 and the wear-resistant rake blade 130 are locked and fixed to the vertical end plate 1112 by the first fastening assembly 140, the wear-resistant rake blade 130 can fit together more tightly. Simultaneously, because the vertical end plate 1112 is perpendicular to the horizontal main plate 1111, and the resistance counterweight 120 and the wear-resistant rake blade 130 abut against the horizontal main plate 1111, the wear-resistant rake blade 130 can be more securely confined in a direction perpendicular to the horizontal main plate 1111. At this time, the wear-resistant rake blade 130 can maintain a perpendicularity to the plane where the material is located during operation, enabling more efficient turning of the material and accelerating the drying speed. In some embodiments, the first fastening assembly 140 consists of bolts and nuts; however, this is not limited, and those skilled in the art can make other choices. In other embodiments, the first fastening component 140 can be spot-welded to the anti-resistance counterweight 120, the wear-resistant rake blade 130, or the vertical end plate 1112, which can reduce the occurrence of metal foreign objects generated by fretting wear among the first fastening component 140, the anti-resistance counterweight 120, the wear-resistant rake blade 130, and the vertical end plate 1112.

[0045] Please see Figure 2In some embodiments, the elastic frame 1120 includes an elastic support bar 1121 and two clamps 1122; the elastic support bar 1121 is bent in the middle to form an installation bend 1101; the installation bend 1101 and the transverse main plate 1111 are locked and fixed by a second fastening assembly 150; each clamp 1122 is fixedly disposed at one end of the elastic support bar 1121 and is used to fit onto the rake rod 300. It can be understood that by locking the installation bend 1101 and the transverse main plate 1111 together by the second fastening assembly 150, the transverse main plate 1111 and the elastic support bar 1121 can be tightly connected together. Simultaneously, since each end of the elastic support bar 1121 is fixedly installed with a clamp 1122, after the clamp 1122 is fitted onto the rake rod 300, a triangular structure can be formed between the elastic support bar 1121 and the rake rod 300 to enhance the installation stability and resistance of the rigid frame 1110.

[0046] Please refer to the following: Figure 2 and Figure 3 In some embodiments, the second fastening assembly 150 includes an adjusting bolt 1510 and a locking nut 1520. An adjusting screw hole (not shown) is provided on the transverse main plate 1111. The screw of the adjusting bolt 1510 passes through the adjusting screw hole. A sliding hook of the mounting bend 1101 is provided on the peripheral wall of the screw. The locking nut 1520 is threaded onto the end of the screw and locks the elastic support strip 1121 and the transverse main plate 1111. It can be understood that because the sliding hook of the mounting bend 1101 is provided on the peripheral wall of the screw, the mounting bend 1101 can slide relative to the peripheral wall of the screw, thereby allowing the wear-resistant rake blade 130 to rotate relative to the elastic frame 1120 with the rigid frame 1110, thus adjusting the angle between the wear-resistant rake blade 130 and the rake rod 300, so that the wear-resistant rake blade 130 can achieve different stirring effects on the material. Specifically, the included angle between the wear-resistant rake blade 130 and the rake rod 300 can be 5°, 10°, 15°, 20°, or 25°, and is not limited here. Those skilled in the art can also adjust it according to the stir-frying effect. In other embodiments, after the included angle between the wear-resistant rake blade 130 and the rake rod 300 is determined, the second fastening component 150 can be spot-welded to the rigid frame 1110 or the elastic frame 1120 respectively, so as to reduce the occurrence of fretting wear between the second fastening component 150, the rigid frame 1110, and the elastic frame 1120 introducing metal foreign objects.

[0047] Please see Figure 4This disclosure also provides a material turning device 10, including a drive shaft 200, a rake bar 300, and a rake mechanism 100 of any of the above embodiments; the drive shaft 200 is used to connect to the power output end of a rotary driver; the rake bar 300 is fixedly mounted on the drive shaft 200, and the rake frame assembly 110 is mounted on the rake bar 300. It can be understood that since the drive shaft 200 is connected to the power output end of the rotary driver, and the rake frame assembly 110 is mounted on the rake bar 300 fixed on the drive shaft 200, the rake bar 300 can be driven by the rotary driver to move the rake frame assembly 110, so that the wear-resistant rake blades 130 of the rake frame assembly 110 turn the material.

[0048] Please refer to the following: Figure 4 and Figure 5 In some embodiments, a wear-resistant sleeve 400 is fitted over the outer side of the rake bar 300, and the rake frame assembly 110 is connected to the outer wall of the wear-resistant sleeve 400. It is understood that by using the wear-resistant sleeve 400 on the outer side of the rake bar 300 and connecting the rake frame assembly 110 through the wear-resistant sleeve 400, the rake frame assembly 110 can be separated from the rake bar 300, reducing the introduction of metal foreign objects due to wear between the rake frame assembly 110 and the rake bar 300.

[0049] Please see Figure 5 In some embodiments, the rake rod 300 is provided with a limiting pin 310, and the wear-resistant sleeve 400 is provided with a positioning hole 401; the limiting pin 310 passes through and engages with the positioning hole 401. It can be understood that, since the rake rod 300 is provided with a limiting pin 310 and the wear-resistant sleeve 400 is provided with a positioning hole 401, after the wear-resistant sleeve 400 is fitted onto the rake rod 300, the limiting pin 310 can pass through the positioning hole 401 to achieve engagement and limiting, thereby reducing the occurrence of the wear-resistant sleeve 400 coming off the rake rod 300.

[0050] Please see Figure 4 In some embodiments, the number of raking mechanisms 100 is at least two, and the at least two raking mechanisms 100 are spaced apart along the length of the rake bar 300. It can be understood that since at least two raking mechanisms 100 are spaced apart along the length of the rake bar 300, when the rotary driver drives the rake bar 300 to move, the rake bar 300 can drive at least two raking mechanisms 100 to stir-fry the material synchronously at one time, thereby improving the stirring efficiency of the material.

[0051] Please see Figure 5This disclosure also provides a disc dryer, including an outer cylinder 20, a heating disc 30, a rotary drive (not shown), and a turning device 10 of any of the above embodiments; the heating disc 30 is disposed inside the outer cylinder 20 and is used to hold and bake materials; the rotary drive is fixed at the center of the heating disc 30, and a transmission shaft 200 is connected to the power output end of the rotary drive; the number of rakes 300 is at least two; each rake 300 is spaced apart and mounted on the peripheral wall of the transmission shaft 200, and extends radially along the heating disc 30; each rake mechanism 100 located on the rake 300 slides against the heating disc 30. It can be understood that by spaced apart mounting at least two rakes 300 on the peripheral wall of the transmission shaft 200, as each rake 300 extends radially along the heating disc 30, the rake mechanisms 100 on the rakes 300 can be dispersedly arranged on the heating disc 30. Furthermore, since the transmission main shaft 200 is connected to the power output end of the rotary driver located at the center of the heating plate 30, each rake mechanism 100 located on the rake bar 300 slides against the heating plate 30, so that the rotary driver can drive each rake mechanism 100 to move with the rake bar 300, thereby causing the wear-resistant rake blades 130 of each rake mechanism 100 to slide, stir and disperse the material on the heating plate 30, ultimately improving the drying efficiency of the heating plate 30 for the material.

[0052] In some embodiments, for better understanding, the usage process of the disc dryer in the above embodiments is described as follows:

[0053] First, the material is placed onto the heating plate 30 inside the outer cylinder 20. The rotary drive is started to drive the transmission main shaft 200 to rotate. The transmission main shaft 200 drives the rake bar 300 to move so that each rake mechanism 100 moves relative to the heating plate 30. The wear-resistant rake blades 130 of each rake mechanism 100 slide on the heating plate 30. The material turning part 1310 of the wear-resistant rake blade 130 abuts against the heating plate 30, which can efficiently turn and disperse the material on the heating plate 30, so as to ultimately improve the drying efficiency of the material by the heating plate 30.

[0054] Compared with the prior art, this disclosure has at least the following advantages:

[0055] The aforementioned rake mechanism 100, since the wear-resistant rake blade 130 is attached to the abutment and limiting surface 1210 of the resistance counterweight block 120, when the resistance of the wear-resistant rake blade 130 increases, the wear-resistant rake blade 130 can transmit the resistance to the resistance counterweight block 120 through the abutment and limiting surface 1210. The resistance counterweight block 120 uses its own weight to limit the position of the wear-resistant rake blade 130 through the abutment and limiting surface 1210, which can reduce the occurrence of twisting or flipping of the wear-resistant rake blade 130, thereby keeping the wear-resistant rake blade 130 and the material at a fixed angle, so that the stirring effect of the wear-resistant rake blade 130 on the battery precursor material is more stable, and ultimately reduces the impact on the drying efficiency of the battery precursor material.

[0056] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A harrowing mechanism (100), characterized in that, The utility model relates to a kind of resistance training equipment, including: Rake frame assembly (110), which is used to be mounted on rake rod (300); Resistance weight block (120), which is fixedly mounted on the rake frame assembly (110) away from one end of the rake rod (300);Part of the resistance weight block (120) extends out of the opposite sides of the rake frame assembly (110) and forms a resisting limiting surface (1210); Wear-resistant rake blade (130), which is arranged on the resisting limiting surface (1210) and fixedly connected with the rake frame assembly (110);The wear-resistant rake blade (130) is used for turning over materials.

2. The harvester (100) according to claim 1, characterized in that The rake frame assembly (110) includes a rigid frame body (1110) and an elastic frame body (1120) connected thereto, and the elastic frame body (1120) is used to be connected to the rake rod (300);The resistance weight block (120) is fixedly mounted on the rigid frame body (1110), and the wear-resistant rake blade (130) is fixedly connected to the rigid frame body (1110).

3. The harvester (100) according to claim 2, characterized in that The rigid frame body (1110) includes a horizontal main plate (1111) and a vertical end plate (1112);The horizontal main plate (1111) is connected to the elastic frame body (1120);The vertical end plate (1112) is fixedly mounted on the horizontal main plate (1111) away from one end of the elastic frame body (1120) and is arranged perpendicularly to the horizontal main plate (1111);The resistance weight block (120) and the wear-resistant rake blade (130) are locked and fixed with the vertical end plate (1112) by a first fastening assembly (140) and abut against the horizontal main plate (1111) together.

4. The harvester (100) according to claim 3, characterized in that The elastic frame body (1120) includes an elastic supporting strip (1121) and two hoops (1122);The middle part of the elastic supporting strip (1121) is bent to form a mounting bend (1101);The mounting bend (1101) is locked and fixed with the horizontal main plate (1111) by a second fastening assembly (150);Each of the hoops (1122) is fixedly arranged at one end of the elastic supporting strip (1121) and is used to be sleeved on the rake rod (300).

5. The harvester (100) according to claim 4, characterized in that The second fastening assembly (150) includes an angle adjusting bolt (1510) and a locking nut (1520), and an adjusting hole is formed in the horizontal main plate (1111);The screw rod of the angle adjusting bolt (1510) penetrates through the adjusting hole;The mounting bend (1101) is hooked on the peripheral wall of the screw rod;The locking nut (1520) is threadedly screwed on the end of the screw rod and locks and fixes the elastic supporting strip (1121) and the horizontal main plate (1111).

6. A material turning device (10) characterized by The rake mechanism (100) comprises a transmission main shaft (200), a rake rod (300) and the rake mechanism (100) of any one of claims 1-5; the transmission main shaft (200) is used for being connected to a power output end of a rotary driver; the rake rod (300) is fixedly arranged on the transmission main shaft (200), and the rake frame assembly (110) is mounted on the rake rod (300).

7. A device (10) according to claim 6, characterized in that An outer side of the rake rod (300) is sleeved with a wear-resistant sheath (400), and the rake frame assembly (110) is connected to an outer wall of the wear-resistant sheath (400).

8. A device (10) according to claim 7, characterized in that A limiting pin (310) is arranged on the rake rod (300), and a positioning hole (401) is arranged on the wear-resistant sheath (400); the limiting pin (310) is arranged through the positioning hole (401) and matched with the positioning hole (401).

9. A device (10) according to claim 6, characterized in that The number of the rake mechanisms (100) is at least two, and the at least two rake mechanisms (100) are distributed along a length direction of the rake rod (300).

10. A disc dryer, characterized by The turnover device (10) comprises an outer cylinder (20), a heating disc (30), a rotary driver and the turnover device (10) of any one of claims 6-9; the heating disc (30) is arranged in the outer cylinder (20), and the heating disc (30) is used for containing and baking the material; the rotary driver is fixed at a center position of the heating disc (30), the transmission main shaft (200) is connected to a power output end of the rotary driver; the number of the rake rods (300) is at least two; each rake rod (300) is mounted on a peripheral wall of the transmission main shaft (200) and extends along a radial direction of the heating disc (30) respectively; each rake mechanism (100) on the rake rod (300) is slidably abutted against the heating disc (30).

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