Heating reaction device for producing biomass hard carbon

Abstract

The utility model relates to a heating reaction device for producing biomass hard carbon, which comprises a feed pipe, a carbonization pipe arranged at one end of the feed pipe, a screening pipe arranged at one end, far away from the feed pipe, of the carbonization pipe, and a main shaft rotationally arranged in the feed pipe, the carbonization pipe and the screening pipe, the carbonization pipe is rotationally arranged between the feeding pipe and the screening pipe, the carbonization pipe heats materials to be carbonized to form long and thin fiber hard carbon and fine hard carbon particles, the screening pipe screens out the hard carbon particles from the fiber hard carbon, and a spiral blade, a cutting blade and a piston assembly are arranged on the main shaft. The spiral blade pushes materials to move, and the cutting blade cuts fiber hard carbon; the piston assembly prevents the fiber hard carbon from blocking the hole.

Description

Technical Field

[0001] The utility model relates to the technical field of battery hard carbon negative electrode materials, in particular to a heating reaction device for producing biomass hard carbon. Background Art

[0002] Hard carbon refers to carbon materials that cannot be converted into graphite after high-temperature treatment above 2800°C. Compared with soft carbon, hard carbon has good cycle performance due to its low sodium storage potential, high reversible specific capacity and highly disordered structure, which is beneficial to improving the voltage and energy density of the whole battery. Therefore, it is more suitable as the negative electrode material of the battery. Currently, the commonly used hard carbon precursors are mainly bio-based polymer materials, such as bamboo, coconut shell, starch, walnut shell, wine lees, etc. At the same time, chemical raw materials such as anthracite, asphalt, phenolic resin, etc. can also be used.

[0003] A Chinese utility model with application number CN202322889201.9 discloses a device for preparing hard carbon negative electrode materials for batteries, including a rotating drum and a heating chamber. The rotating drum includes a feed seal, a main drum, a discharge seal and a drive assembly. The drive assembly drives the main drum to rotate, and the lees pass through the feed seal and enter the carbonization section from the feed section of the main drum to be heated and carbonized in the heating chamber, and then enter the screening section of the main drum to screen and separate the fine hard carbon particles, which are discharged from the primary discharge port of the discharge seal, while the slender fibrous hard carbon continues to move in the main drum to the secondary discharge port of the discharge seal, thereby realizing automatic separation of biomass hard carbon after carbonization is completed, and preparing hard carbon particles that can be directly used as hard carbon negative electrode materials for batteries.

[0004] However, the inventors found that the device has the following problems: 1. The slender fiber hard carbon is easy to get stuck at the secondary discharge port; 2. It is difficult to repair when there is a problem with the discharge. Utility Model Content

[0005] The purpose of the utility model is to provide a heating reaction device for producing biomass hard carbon in view of the deficiencies in the prior art, to solve the problem of material jamming at the discharge port by arranging a piston assembly, and to solve the problem of difficult maintenance by arranging an openable top cover.

[0006] In view of the above technical problems, the technical solution adopted by the utility model is as follows: a heating reaction device for producing biomass hard carbon, including a feed pipe, a carbonization tube arranged at one end of the feed pipe, a screening tube arranged at an end of the carbonization tube away from the feed pipe, and a main shaft rotatably arranged in the feed pipe, the carbonization tube and the screening tube, the feed pipe is used to receive materials, the carbonization tube is rotatably arranged between the feed pipe and the screening tube, the carbonization tube heats the material to carbonization to form elongated fibrous hard carbon and fine hard carbon particles, the screening tube screens the hard carbon particles out of the fibrous hard carbon, the main shaft is provided with spiral blades, cutting blades and piston assemblies, the spiral blades push the material to move, and the cutting blades cut the fibrous hard carbon; the piston assembly prevents the fibrous hard carbon from clogging the holes.

[0007] As a preference, a feed channel is provided above the feed pipe, a discharge valve is provided in the feed channel, and a base is provided below the feed pipe.

[0008] As a preferred embodiment, a heating chamber is provided below the carbonized tube, and a mounting seat is provided on the side of the heating chamber away from the base; a driving motor is fixed on the mounting seat, a gear is fixed on the rotating shaft of the driving motor, a gear ring is sleeved on the carbonized tube, and the gear ring meshes with the gear, a plurality of groups of supporting rollers are fixed on the base and the mounting seat, and the number of supporting rollers in each group is not less than two, the carbonized tube is rotatably arranged on the supporting rollers, and the carbonized tube is also fixedly connected to a hole tube, and the hole tube is located in the screening tube.

[0009] As a preference, the bottom of the sieve tube is provided with a first discharge hole, a second discharge hole and a third discharge hole in the discharge direction, and discharge channels are connected below the first discharge hole, the second discharge hole and the third discharge hole, and the diameter of the sieve holes of a section of the orifice tube located above the first discharge hole is smaller than the diameter of the sieve holes of another section of the orifice tube located above the second discharge hole.

[0010] As a preferred embodiment, a motor is provided at one end of the sieve tube, and the main shaft is fixedly connected to the motor.

[0011] on the rotating shaft.

[0012] Preferably, the piston assembly comprises a connecting rod and a movable block, the main shaft is provided with an eccentric shaft above the third discharge hole, the large end of the connecting rod is rotatably connected to the eccentric shaft, and the small end of the connecting rod is rotatably connected to the movable block.

[0013] Preferably, the sieve tube is provided with an openable top cover.

[0014] As a preferred embodiment, limit blocks are provided on both sides of the movable block in the rotation direction, and the limit blocks are connected

[0015] in the sieve tube.

[0016] Beneficial effects of the utility model:

[0017] 1. The piston assembly is set to solve the problem of material jamming at the discharge port and reduce the failure rate;

[0018] 2. The problem of difficult maintenance is solved by setting an openable top cover.

[0019] 3. By setting up independently rotating main shaft and carbonizing tube, the material can be heated more evenly and the efficiency can be improved.

[0020] In summary, the equipment has the advantages of low failure rate, convenient maintenance, high efficiency, etc., and is particularly suitable for the field of battery hard carbon negative electrode material technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a structural schematic diagram of a heating reaction device for producing biomass hard carbon;

[0023] Figure 2 A partial view of a heating reaction device for producing biomass hard carbon;

[0024] Figure 3 for Figure 2 A local enlargement of the middle A;

[0025] Figure 4 is a schematic diagram of the structure of the piston assembly;

[0026] Figure 5 Schematic diagram of the working of the piston assembly Figure 1 ;

[0027] Figure 6 Schematic diagram of the working of the piston assembly Figure 2 ;

[0028] Figure 7 It is a partial view of the screen tube;

[0029] Figure 8 The structural diagram of the main axis;

[0030] Fig. 9 for Figure 8 A partial enlarged view of point B in the middle.

[0031] The attached drawings are marked as follows: 1. Feed pipe; 11. Inlet channel; 12. Base; 13. Discharge valve; 2. Carbonization tube; 21. Heating chamber; 22. Mounting seat; 23. Drive motor; 24. Gear; 25. Gear ring; 26. Support roller; 27. Orifice tube; 3. Screening tube; 31. First discharge hole; 32. Second discharge hole; 33. Third discharge hole; 34. Discharge channel; 35. Top cover; 4. Main shaft; 41. Spiral blade; 42. Cutting blade; 43. Piston assembly; 44. Motor; 45. Connecting rod; 46. Movable block; 47. Eccentric shaft; 48. Limit block. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0035] Embodiment 1:

[0036] like Figures 1 to 9As shown, a heating reaction device for producing biomass hard carbon includes a feed pipe 1, a carbonizing tube 2 arranged at one end of the feed pipe 1, a screening tube 3 arranged at an end of the carbonizing tube 2 away from the feed pipe 1, and a main shaft 4 rotatably arranged in the feed pipe 1, the carbonizing tube 2 and the screening tube 3, wherein the feed pipe 1 is used to receive materials, the carbonizing tube 2 is rotatably arranged between the feed pipe 1 and the screening tube 3, the carbonizing tube 2 heats the materials to carbonization to form elongated fibrous hard carbon and fine hard carbon particles, the screening tube 3 screens the hard carbon particles out of the fibrous hard carbon, the main shaft 4 is provided with a spiral blade 41, a cutting blade 42 and a piston assembly 43, the spiral blade 41 pushes the material to move, the cutting blade 42 cuts the fibrous hard carbon; the piston assembly 43 prevents the fibrous hard carbon from blocking the holes.

[0037] like Figure 1 As shown in FIG. 2 , a feed channel 11 is arranged above the feed pipe 1, a discharge valve 13 is arranged in the feed channel 11, and a base 12 is arranged below the feed pipe 1.

[0038] It is worth mentioning here that the quantitative feeding is controlled by setting the discharge valve 13, which can also play a sealing role to avoid internal heat loss.

[0039] like Figure 1 ,2, a heating chamber 21 is arranged below the carbonized tube 2, and a mounting seat 22 is arranged on the side of the heating chamber 21 away from the base 12; a driving motor 23 is fixed on the mounting seat 22, and a gear 24 is fixed on the rotating shaft of the driving motor 23, and a gear ring 25 is sleeved on the carbonized tube 2, and the gear ring 25 meshes with the gear 24, and a plurality of groups of supporting rollers 26 are fixed on the base 12 and the mounting seat 22, and the number of each group of supporting rollers 26 is not less than two, and the carbonized tube 2 is rotatably arranged on the supporting rollers 26, and the carbonized tube 2 is also fixedly connected with a hole tube 27, and the hole tube 27 is located in the screening tube 3.

[0040] It is worth mentioning here that the heating chamber 21 heats the carbonizing tube 2 by burning fuel. By setting a rotating carbonizing tube 2, the material is heated more evenly during the carbonization process. By setting a supporting roller 26, the friction force of the carbonizing tube 2 when rolling is reduced, and the stability is improved. The hole tube 27 that rotates synchronously with the carbonizing tube 2 is not easily blocked because the top position of the material falls with gravity when it rotates.

[0041] like Figure 2As shown in Figures 3 and 7, the bottom of the screening tube 3 is provided with a first discharge hole 31, a second discharge hole 32 and a third discharge hole 33 in the discharge direction, and a discharge channel 34 is connected below the first discharge hole 31, the second discharge hole 32 and the third discharge hole 33. The diameter of the sieve holes of a section of the orifice tube 27 located above the first discharge hole 31 is smaller than the diameter of the sieve holes of another section of the orifice tube 27 located above the second discharge hole 32.

[0042] It is worth mentioning here that by setting sieve holes of different diameters on the perforated tube, hard carbon particles of different sizes produced during the carbonization process of the material can be screened, and the slender fibrous hard carbon will continue to be pushed forward by the spiral blade 41. When passing through the cutting blade 42, part of the fibrous hard carbon will be cut off and fall into the third discharge hole 33.

[0043] like Figure 3 As shown, a motor 44 is provided at one end of the sieve tube 3, and the main shaft 4 is fixed

[0044] Connected to the rotating shaft of the motor 44.

[0045] like Figure 4 As shown in ,5,6,9, the piston assembly 43 includes a connecting rod 45 and a movable block 46. The main shaft 4 is located above the third discharge hole 33 and is provided with an eccentric shaft 47. The large end of the connecting rod 45 is rotatably connected to the eccentric shaft 47, and the small end of the connecting rod 45 is rotatably connected to the movable block 46.

[0046] It is worth mentioning that the piston assembly 43 that moves up and down is provided to hammer the third discharge hole 33, so that the slender fiber hard carbon will not be stuck at the third discharge hole 33, and the volume of the piston assembly 43 is smaller than the aperture of the third discharge hole 33, which does not affect the normal feeding.

[0047] like Figure 1 As shown in Figure 2, the screening tube 3 is provided with an openable top cover 35.

[0048] It is worth mentioning that the problem of difficult maintenance is solved by providing an openable top cover 35.

[0049] When a discharging failure occurs, the operation can be stopped at any time to open the top cover 35 to check the situation inside the screening tube 3.

[0050] like Figure 3 As shown in FIGS. 5 and 6 , limit blocks 48 are provided on both sides of the movable block 46 in the rotation direction.

[0051] The limiting block 48 is connected in the screening pipe 3 .

[0052] It is worth mentioning that the limit block 48 is provided to limit the rotation of the movable block 46 so that it can only move up and down.

[0053] The working process is as follows:

[0054] The worker turns on the switch, the heating chamber 21 starts to burn to preheat the carbonizing tube 2, the driving motor 23 on the mounting seat 22 drives the carbonizing tube 2 to rotate, and after preheating to the set temperature, the material enters the feeding tube 1 from the feeding channel 11, and the motor 44 drives the main shaft 4 to rotate. The rotation direction of the main shaft 4 is opposite to that of the carbonizing tube 2. The material enters the carbonizing tube 2 under the push of the spiral blade 41 on the main shaft 4. The material is heated to carbonization to form slender fibrous hard carbon and fine hard carbon particles, and is pushed by the spiral blade 41 to advance to the hole tube 27 connected to the carbonizing tube and rotates with it. The hole tube 27 is inside the screening tube 4, and the fine Small hard carbon particles are sifted out from the small sieve holes and fall into the first discharge hole 31 below, while larger particles are sifted out from the sieve holes with larger apertures and fall into the second discharge hole 32 below, and the slender fibrous hard carbon will continue to be pushed forward by the spiral blade 41. Part of the fibrous hard carbon will be cut off when passing through the cutting blade 42, and then all will fall into the third discharge hole 33. The piston assembly 43 located on the third discharge hole 33 rotates with the main shaft 4 and continuously moves up and down. The movable block 46 hammers the space at the third discharge hole 33 under the restriction of the limit block 48 to prevent jamming. Finally, all the hard carbon products are collected and discharged by the discharge channel 34.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A heating reaction device for producing biomass hard carbon, comprising a feed pipe (1), a carbonizing tube (2) arranged at one end of the feed pipe (1), a screening tube (3) arranged at one end of the carbonizing tube (2) away from the feed pipe (1), and a main shaft (4) rotatably arranged in the feed pipe (1), the carbonizing tube (2) and the screening tube (3), characterized in that: The feed pipe (1) is used to receive materials; The carbonization tube (2) is rotatably arranged between the feed tube (1) and the screening tube (3), and the carbonization tube (2) heats the material until it is carbonized to form elongated fibrous hard carbon and fine hard carbon particles; The screening tube (3) screens out the hard carbon particles from the fibrous hard carbon; The main shaft (4) is provided with a spiral blade (41), a cutting blade (42) and a piston assembly (43); the spiral blade (41) pushes the material to move, the cutting blade (42) cuts the fiber hard carbon; and the piston assembly (43) prevents the fiber hard carbon from blocking the hole.

2. A heating reaction device for producing biomass hard carbon according to claim 1, characterized in that: A feed channel (11) is provided above the feed pipe (1), a discharge valve (13) is provided in the feed channel (11), and a base (12) is provided below the feed pipe (1).

3. A heating reaction device for producing biomass hard carbon according to claim 2, characterized in that: A heating chamber (21) is provided below the carbonized tube (2), and a mounting seat (22) is provided on a side of the heating chamber (21) away from the base (12); a driving motor (23) is fixed on the mounting seat (22), a gear (24) is fixed on the rotating shaft of the driving motor (23), and a gear ring (25) is sleeved on the carbonized tube (2), the gear ring (25) meshing with the gear (24); A plurality of groups of support rollers (26) are fixed on the base (12) and the mounting seat (22), each group of support rollers (26) having no less than two support rollers, and the carbonized tube (2) is rotatably disposed on the support rollers (26); The carbonized tube (2) is also fixedly connected to a perforated tube (27), and the perforated tube (27) is located in the sieve tube (3).

4. A heating reaction device for producing biomass hard carbon according to claim 3, characterized in that: The bottom of the screening tube (3) is provided with a first discharge hole (31), a second discharge hole (32) and a third discharge hole (33) in the discharge direction, and the first discharge hole (31), the second discharge hole (32) and the third discharge hole (33) are all connected to a discharge channel (34) below. The diameter of the sieve holes of a section of the perforated tube (27) located above the first discharge hole (31) is smaller than the diameter of the sieve holes of another section of the perforated tube (27) located above the second discharge hole (32).

5. A heating reaction device for producing biomass hard carbon according to claim 1, characterized in that: A motor (44) is provided at one end of the screening tube (3), and the main shaft (4) is fixedly connected to the rotating shaft of the motor (44).

6. A heating reaction device for producing biomass hard carbon according to claim 1, characterized in that: The piston assembly (43) comprises a connecting rod (45) and a movable block (46); the main shaft (4) is provided with an eccentric shaft (47) above the third discharge hole (33); the large end of the connecting rod (45) is rotatably connected to the eccentric shaft (47); and the small end of the connecting rod (45) is rotatably connected to the movable block (46).

7. A heating reaction device for producing biomass hard carbon according to claim 1, characterized in that: The screening tube (3) is provided with an openable top cover (35).

8. A heating reaction device for producing biomass hard carbon according to claim 6, characterized in that: Limit blocks (48) are provided on both sides of the movable block (46) in the rotation direction, and the limit blocks (48) are connected to the screening tube (3).

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