Box-type furnace unit, split box-type furnace, integrated box-type furnace and splicing production line

Abstract

The utility model provides a box-type furnace unit which comprises a box body, a furnace door and a flange plate, the box body is of a cubic structure, a pair of opposite faces in the box body are provided with communicating openings, the flange plate is arranged on the box body, the flange plate corresponds to the communicating openings, the flange plate is used for being connected with a flange plate of another box-type furnace unit, the communicating openings are used for installing the furnace door, and the furnace door is arranged on the box body. Or the communication port is used for communicating with the communication port of another box-type furnace unit. When a test is carried out, the box-type furnace units can be separated or combined according to production process requirements and product performance requirements. When the box-type furnace units are separated, each box-type furnace unit is sealed by two furnace doors, and each box-type furnace unit can test the influence of different temperatures, air inflow and air pressure in each box body on a material fired product; when each box-type furnace unit is connected with the flange plate of another box-type furnace unit through the flange plate, the influence of the same temperature, air inflow and air pressure in a plurality of box bodies on a material fired product can be tested.

Description

Technical Field

[0001] This utility model relates to the field of kiln technology, and in particular to a box-type kiln unit, a split-type box-type kiln, and a combined box-type kiln. Background Technology

[0002] Furnace testing is a crucial step in the preparation of ternary cathode materials for lithium-ion batteries. By controlling the furnace temperature, air intake, pressure, and time, the structure, composition, purity, and performance of the materials can be optimized, thereby improving the overall performance of the battery. During the testing process, the furnace conditions need to be controlled according to the production process requirements and the performance requirements of the product.

[0003] The existing experimental kilns are all one-piece structures, which have low flexibility and cannot quickly adjust parameter requirements or switch experimental procedures. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a box-type furnace unit, which aims to solve the problem that the existing experimental kilns are all integrated structures, with low flexibility and inability to quickly adjust parameter requirements and switch experimental processes.

[0005] This utility model provides a box-type furnace unit, including a box body, a furnace door, and a flange plate. The box body has a cubic structure, and a pair of opposite faces of the box body are provided with communication openings. The flange plate is disposed on the box body and corresponds to the communication opening. The flange plate is used to connect with the flange plate of another box-type furnace unit. The communication opening is used to install the furnace door or to connect with the communication opening of another box-type furnace unit.

[0006] According to some embodiments of the present invention, the flange plate includes a first connecting edge and a second connecting edge that are connected to each other. The first connecting edge and the second connecting edge are perpendicular to each other. The first connecting edge is connected to the housing. The second connecting edge has a connecting hole, which allows bolts to be inserted to fix the second connecting edges of two adjacent box furnace units. A plurality of reinforcing plates are provided between the first connecting edge and the second connecting edge. The plurality of reinforcing plates are evenly spaced along the extension direction of the flange plate and are perpendicular to the first connecting edge and the second connecting edge.

[0007] According to some embodiments of the present invention, the box is provided with a conveying component, which is used to convey the sagger placed in the box, and the communication port is located in the conveying direction of the sagger.

[0008] According to some embodiments of the present invention, the conveying assembly includes a plurality of conveying rollers, which are rotatably connected to the box body at uniform intervals. The conveying rollers are used to carry the sagger and convey the sagger by rotating.

[0009] According to some embodiments of the present invention, the housing is connected to a duct assembly, which is used to transport hot air into the housing.

[0010] According to some embodiments of the present invention, a heating component is provided inside the box, which is used to increase the temperature inside the box.

[0011] According to some embodiments of the present invention, the box body includes vertical plates, horizontal plates, and sealing plates. There are two vertical plates, two horizontal plates, and two sealing plates. The two vertical plates are arranged opposite each other and extend in the vertical direction. The two horizontal plates are arranged opposite each other and extend in the horizontal direction. The two vertical plates and two horizontal plates are connected to each other to form a furnace cavity. The two sealing plates cover the opposite ends of the furnace cavity. The communication opening is opened on the sealing plate.

[0012] This utility model also provides a split-type box furnace, including any of the box furnace units described above, wherein the box body has a vent hole for conveying external gas into the box body, and the furnace door is installed on a pair of opposite faces of two adjacent box furnace units.

[0013] This utility model also provides a combined box furnace, including any of the box furnace units described above. The box body has a vent hole for conveying external gas into the box body. Two adjacent box furnace units are spliced ​​together by the flange plate so that the communication port on one opposite side of the box furnace unit is connected. The furnace door is installed at the communication port on the other opposite side of the box furnace unit.

[0014] This utility model also provides a splicing production line, including the box furnace unit described in any of the above claims, wherein the box body has a vent hole for conveying external gas into the box body, and two adjacent box furnace units are spliced ​​together by the flange plate so that the communication ports on opposite surfaces of the box furnace units are connected.

[0015] Beneficial Effects: This utility model provides a box-type furnace unit, including a box body, a furnace door, and flange plates. The box body has a cubic structure, with connecting openings on a pair of opposite faces. Flange plates are mounted on the box body, corresponding to the connecting openings. The flange plates are used to connect to flange plates of another box-type furnace unit. The connecting openings are used to install furnace doors or to connect with connecting openings of other box-type furnace units. During testing, the various box-type furnace units can be separated or combined according to production process requirements and product performance requirements.

[0016] This utility model also provides a split box furnace. When the various box furnace units are separated, each box furnace unit has two furnace doors for sealing. Each box furnace unit can test the effects of different temperatures, air intake, and air pressures inside each box on the fired products.

[0017] This utility model also provides a combined box furnace. When each box furnace unit is connected to the flange plate of another box furnace unit through a flange plate, the effects of the same temperature, air intake, and air pressure in multiple boxes on the fired products of materials can be tested.

[0018] This utility model also provides a splicing production line. When not in testing, two or more box-type furnace units are connected in series into a long kiln production line (the sealed furnace door positions at the beginning and end are directly connected into the production line) as a section of the production line. This can extend the original firing production line and improve the utilization rate of the box-type furnace units. When not in testing, the box-type furnace units can also be used as part of the production line for flexible production and testing. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the box-type furnace unit of this utility model;

[0021] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0022] Figure 3 This is a schematic diagram of the structure of the split-type box furnace of this utility model;

[0023] Figure 4 This is a schematic diagram of the combined box furnace of this utility model.

[0024] In the diagram: 1. Box body; 11. Connecting port; 12. Vertical plate; 13. Horizontal plate; 14. Sealing plate; 15. Vent hole; 2. Furnace door; 3. Flange plate; 31. First connecting edge; 32. Second connecting edge; 321. Connecting hole; 33. Reinforcing plate; 4. Conveyor roller; 5. Air duct assembly; 6. Heating assembly. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0026] Please see Figures 1 to 4 This utility model provides a box-type furnace unit, including a box body 1, a furnace door 2, and a flange plate 3. The box body 1 has a cubic structure, and a pair of opposite faces of the box body 1 are provided with a communication port 11. The flange plate 3 is provided on the box body 1, and the flange plate 3 corresponds to the communication port 11. The flange plate 3 is used to connect with the flange plate 3 of another box-type furnace unit. The communication port 11 is used to install the furnace door 2, or to connect with the communication port 11 of another box-type furnace unit.

[0027] Understandably, during testing, the various box furnace units can be separated or combined according to production process requirements and product performance requirements. When the various box furnace units are separated, each box furnace unit has two furnace doors 2 for sealing, and each box furnace unit can test the effect of different temperatures, air intake volumes, and air pressures within each chamber 1 on the fired products. When each box furnace unit is connected to another box furnace unit via flange plates 3, the effect of the same temperature, air intake volume, and air pressure within multiple chambers 1 on the fired products can be tested.

[0028] When a single box furnace unit is required for testing, furnace doors 2 are installed on both the left and right sides of the box furnace unit for sealing, thus forming a small, enclosed, thin, short box furnace. It is worth noting that when testing a single box furnace unit, the transmission rollers 4 may or may not be required, and it is usually used for static firing tests, suitable for small-scale tests.

[0029] According to some embodiments of this utility model, the flange plate 3 includes a first connecting edge 31 and a second connecting edge 32 connected to each other. The first connecting edge 31 and the second connecting edge 32 are perpendicular to each other. The first connecting edge 31 is connected to the housing 1, and the second connecting edge 32 has a connecting hole 321. The connecting hole 321 allows bolts to enter to fix the second connecting edges 32 of two adjacent box furnace units. In this embodiment, the flange edges on the two housings 1 are fixed together by bolts. The function of the bolts is to tighten the flange edges to form a stable connection. When tightening the bolts, a certain sequence and torque need to be followed to ensure that the force on each bolt is uniform, thereby avoiding deformation of the flange edges or uneven pressure. There is usually a sealing gasket (such as a silicone gasket) between the flange edges on the two housings 1. When the bolts tighten the flange edges, a tight contact surface is generated between the second connecting edge 32 and the gasket, which prevents gas leakage.

[0030] According to some embodiments of this utility model, a plurality of reinforcing plates 33 are provided between the first connecting edge 31 and the second connecting edge 32. These reinforcing plates 33 are evenly spaced along the extension direction of the flange plate 3, and are perpendicular to the first connecting edge 31 and the second connecting edge 32. In this embodiment, the reinforcing edges strengthen the edge portions of the first connecting edge 31 and the second connecting edge 32, making them less prone to deformation or breakage under high pressure or external force, thus effectively improving the load-bearing capacity of the flange. When tightening the flange edge, the flange edge may bend or deform under the tightening force of the bolts. The reinforcing edges help to evenly distribute the pressure, thereby preventing deformation of the flange due to uneven pressure. Furthermore, the evenly arranged reinforcing edges can improve the overall structural stability of the flange edge. Through a reasonable spacing layout, the flange edge can provide more stable support when connecting to the box furnace unit, preventing deformation or damage to the flange edge due to excessive local stress.

[0031] According to some embodiments of the present invention, the box 1 is provided with a conveying component, which is used to convey the sagger placed in the box 1, and the connecting port 11 is located in the conveying direction of the sagger.

[0032] Preferably, the conveying assembly includes a plurality of conveying rollers 4, which are rotatably connected to the housing 1 at even intervals. The conveying rollers 4 carry the crucibles and convey them by rotation. It is understood that the motor transmits power through a chain, belt, or gear, driving the conveying rollers 4 to rotate, thereby achieving smooth movement of the material on the conveying rollers 4. The conveying rollers 4 utilize gravity and friction to push the crucibles within the housing 1, thus adjusting their position. After the test is completed, a crucible entering from one connecting port 11 is pushed by the conveying rollers 4 to reach the other connecting port 11, thereby removing the crucible. During this process, the crucibles contact the roller conveyor through friction, enabling them to move smoothly during transport.

[0033] According to some embodiments of this utility model, the housing 1 is connected to a duct assembly 5, which is used to transport hot air into the housing 1. In this embodiment, the duct assembly 5 transports hot air into the housing 1 to remove volatile substances and impurities, as well as decompose organic matter. Lithium-ion battery ternary cathode materials are typically prepared by wet co-precipitation, containing a large amount of water and residual solvents (such as ammonia and deionized water). Passing in high-temperature hot air rapidly evaporates the water, preventing sudden vaporization of water during subsequent sintering, which could lead to material cracking or a loose structure. Furthermore, the hot air accelerates the decomposition of organic matter and removes volatiles, preventing their residue from forming impurity phases and affecting the material's conductivity.

[0034] According to some embodiments of this utility model, a heating component 6 is provided inside the housing 1, which is used to increase the temperature inside the housing 1. In the previous embodiment, although hot air can raise the overall furnace temperature through forced convection, it is easily limited by the airflow path and furnace structure, resulting in cold spots in corners, edges, or areas with densely stacked materials. Preferably, the heating component 6 is arranged on the upper and lower sides of the transmission roller, which can directly provide radiant heat, eliminate local low-temperature areas, ensure uniform heating of materials, and avoid capacity decay due to uneven grain size. In addition, the hot air temperature is limited by the heat capacity of the gas medium (such as air or nitrogen) and the power of the heater, making it difficult to maintain a high temperature independently. By using resistance wire (silicon molybdenum rod, silicon carbide) or electromagnetic induction heating, direct radiant heat transfer is applied to the material or sagger, breaking through the bottleneck of hot air temperature rise and meeting the high-temperature sintering requirements of lithium battery ternary cathode materials.

[0035] According to some embodiments of this utility model, the housing 1 includes vertical plates 12, horizontal plates 13, and sealing plates 14. Two vertical plates 12, two horizontal plates 13, and two sealing plates 14 are provided. The two vertical plates 12 are arranged opposite each other and extend vertically, and the two horizontal plates 13 are arranged opposite each other and extend horizontally. The two vertical plates 12 and the two horizontal plates 13 are connected to each other to form a furnace cavity. The two sealing plates 14 cover the opposite ends of the furnace cavity, and the connecting opening 11 is opened on the sealing plate 14. It is worth noting that the furnace door 2 can effectively seal the furnace cavity, prevent high-temperature gas leakage, improve energy efficiency, avoid energy waste, and thus maintain a stable temperature inside the furnace cavity.

[0036] This utility model also provides a split-type box furnace, including any of the box furnace units described above. The box body 1 has ventilation holes 15 for supplying external gas into the box body 1. Furnace doors 2 are installed on a pair of opposite faces of two adjacent box furnace units. In this embodiment, the ventilation holes 15 of two adjacent box furnace units are connected by a duct assembly 5, and hot air enters the box body 1 through the ventilation holes 15. In this embodiment, each box furnace unit has two furnace doors 2 for sealing, and each box furnace unit can test the effects of different temperatures, air intake volumes, and air pressures within each box body 1 on the fired product. These parameters can be controlled by the duct assembly 5.

[0037] This utility model also provides a combined box furnace, including any of the box furnace units described above. The box body 1 has a vent 15 for supplying external gas into the box body 1. Two adjacent box furnace units are joined together by a flange plate 3 to connect the communication ports 11 on opposite sides of one box furnace unit. The furnace door 2 is installed on the communication port 11 on the other opposite side of the box furnace unit. In this embodiment, the vent 15 of two adjacent box furnace units are connected by a duct assembly 5, and hot air enters the box body 1 through the vent 15. Alternatively, a protective atmosphere enters the box body 1 through the vent 15. Since the communication ports 11 of two adjacent box furnace units are connected, the crucible can be transferred between the various box furnace units through the communication ports 11, ensuring that the test environment remains consistent across the various box furnace units. In this embodiment, two or more box furnace units are spliced ​​together to form a long box furnace (with furnace doors 2 installed at both ends for sealing). It can be used for static firing of small batches for testing; it can also be equipped with conveyor rollers 4 for transmission, making it suitable for medium and large batch production. It can be used for testing or firing different materials by continuously conveying materials into and out of different temperature ranges in the box furnace.

[0038] This utility model also provides a splicing production line, including the box-type furnace unit described in any of the above claims. The box body 1 has a vent 15 for conveying external gas into the box body 1. Two adjacent box-type furnace units are spliced ​​together via flange plates to connect the communication ports on opposite surfaces of the box-type furnace units. When not in testing mode, two or more box-type furnace units are connected in series within a long kiln production line (the original furnace door 2 positions are directly connected into the production line), serving as a segment of the production line. This extends the original firing production line and improves the utilization rate of the box-type furnace units. Furthermore, when not in testing mode, the box-type furnace units can be used as part of the production line for flexible production and testing.

[0039] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of the equivalent elements of the claims are intended to be included within this application. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0040] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A box-type furnace unit, characterized in that: The furnace includes a housing (1), a furnace door (2), and a flange plate (3). The housing (1) is a cubic structure. A pair of opposite faces of the housing (1) are provided with a communication port (11). The flange plate (3) is provided on the housing (1) and corresponds to the communication port (11). The flange plate (3) is used to connect with the flange plate (3) of another box furnace unit. The communication port (11) is used to install the furnace door (2) or to connect with the communication port (11) of another box furnace unit.

2. The box-type furnace unit according to claim 1, characterized in that: The flange plate (3) includes a first connecting edge (31) and a second connecting edge (32) that are connected to each other. The first connecting edge (31) and the second connecting edge (32) are perpendicular to each other. The first connecting edge (31) is connected to the box body (1). The second connecting edge (32) has a connecting hole (321) for bolts to be inserted to fix the second connecting edges (32) of two adjacent box furnace units. A plurality of reinforcing plates (33) are provided between the first connecting edge (31) and the second connecting edge (32). The plurality of reinforcing plates (33) are evenly spaced along the extension direction of the flange plate (3). The reinforcing plates (33) are perpendicular to the first connecting edge (31) and the second connecting edge (32).

3. The box-type furnace unit according to claim 1, characterized in that: The box (1) is equipped with a conveying component for conveying a sagger placed inside the box (1), and the connecting port (11) is located in the conveying direction of the sagger.

4. The box-type furnace unit according to claim 3, characterized in that: The conveying assembly includes several conveying rollers (4), which are rotatably connected to the box (1) at uniform intervals. The conveying rollers (4) are used to carry the sagger and convey the sagger by rotating.

5. The box-type furnace unit according to claim 1, characterized in that: The housing (1) is connected to a duct assembly (5), which is used to deliver hot air into the housing (1).

6. The box-type furnace unit according to claim 1, characterized in that: The housing (1) is equipped with a heating component (6), which is used to increase the temperature inside the housing (1).

7. The box-type furnace unit according to claim 1, characterized in that: The box body (1) includes vertical plates (12), horizontal plates (13) and sealing plates (14). There are two vertical plates (12), two horizontal plates (13) and two sealing plates (14). The two vertical plates (12) are arranged opposite each other and extend in the vertical direction. The two horizontal plates (13) are arranged opposite each other and extend in the horizontal direction. The two vertical plates (12) and the two horizontal plates (13) are connected to each other to form a furnace cavity. The two sealing plates (14) cover the opposite ends of the furnace cavity. The communication port (11) is opened on the sealing plate (14).

8. A split-type box furnace, comprising at least two box furnace units as described in any one of claims 1-7, characterized in that: The box body (1) has a ventilation hole (15) for conveying external gas into the box body (1). The furnace door (2) is installed on a pair of opposite faces of two adjacent box furnace units.

9. A combined box-type furnace, comprising at least two box-type furnace units as described in any one of claims 1-7, characterized in that: The box body (1) has a ventilation hole (15) for conveying external gas into the box body (1). Two adjacent box furnace units are spliced ​​together by the flange plate (3) so that the communication port (11) on one opposite side of the box furnace unit is connected. The furnace door (2) is installed on the communication port (11) on the other opposite side of the box furnace unit.

10. A splicing production line, comprising at least two box-type furnace units as described in any one of claims 1-7, characterized in that: The box body (1) has a vent (15) for conveying external gas into the box body (1). Two adjacent box furnace units are spliced ​​together by the flange plate (3) so that the communication port (11) on one opposite surface of the box furnace unit is connected.

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