Lithium iron phosphate kiln sintering device
By designing guiding and preheating components, the conveyor box is prevented from shifting and the material is preheated, thus solving the problem of insufficient sintering of lithium iron phosphate and improving battery quality and heating efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGXI JINLI TECH CO LTD
- Filing Date
- 2025-07-15
- Publication Date
- 2026-07-24
AI Technical Summary
During the sintering process of lithium iron phosphate, the conveyor box is prone to shifting, which leads to a lower temperature on one side of the material, affecting the sintering sufficiency. In addition, the lack of a preheating step affects the heating efficiency, resulting in a decrease in battery quality.
The heating tube, connecting rod and guide plate in the guiding assembly prevent the conveyor box from deviating, and the heat conduction tube, heat conduction coil and blower box in the preheating assembly guide the residual heat of the cooling box to the preheating frame to preheat the material and ensure uniform heating.
It effectively prevents the conveyor box from shifting, ensures that all parts of the material are heated synchronously, shortens the temperature rise time, and improves the sintering quality of lithium iron phosphate.
Smart Images
Figure CN224552039U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lithium iron phosphate processing technology, specifically a lithium iron phosphate kiln sintering device. Background Technology
[0002] The development of lithium iron phosphate as a cathode material for lithium-ion batteries stems from the urgent need for improved battery safety, cycle life, and cost control. Early lithium-ion battery cathode materials, such as lithium cobalt oxide, suffered from problems such as poor thermal stability and high cost.
[0003] During the conveying process, some equipment may cause the conveyor box to shift, resulting in a lower temperature on one side of the material, which leads to insufficient sintering and affects battery quality. On the other hand, the lack of a preheating step before heating affects the heating efficiency of the heating box. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a lithium iron phosphate furnace sintering device. The guide component can prevent the conveyor box from shifting during the conveying process, which would cause the material temperature on one side to be too low, resulting in insufficient sintering and affecting the battery quality. The preheating component can enable the material to reach the reaction temperature more quickly when it enters the high temperature zone, thereby improving the product quality.
[0005] The technical problem to be solved by this utility model is achieved by the following technical solution:
[0006] A lithium iron phosphate kiln sintering device includes: a conveyor frame a, a conveyor frame b disposed on one side of the conveyor frame a, two support legs connected to the bottom of both the conveyor frame a and the conveyor frame b, multiple conveyor rollers disposed between the conveyor frame a and the conveyor frame b, a preheating frame connected to the top of the conveyor frame a and the conveyor frame b, a heating box connected to one side of the preheating frame, the heating box communicating with the preheating frame, a cooling box connected to one side of the heating box, a guide assembly disposed inside the heating box to prevent material displacement inside the heating box, the guide assembly including: a heating pipe, a connecting rod and a guide plate, and a preheating assembly disposed on one side of the cooling box to guide heat from inside the cooling box to inside the preheating frame, the preheating assembly including: a heat-conducting pipe, a heat-conducting coil a and a blower box.
[0007] Preferably, the conveyor frame b has a drive groove inside, a motor a is installed on one side of the conveyor frame b, a rotating rod is driven and connected to one side of the motor a, one end of the plurality of conveying rollers is rotatably connected to one side of the conveyor frame a via a rotating shaft, the other side of the plurality of conveying rollers extends to the drive groove and is connected to a bevel gear a, a plurality of bevel gears b that are matched with the bevel gear a are connected to the outside of the rotating rod, a conveying box is provided on the top of the plurality of conveying rollers, a plurality of heating tubes are installed inside the heating box, a plurality of connecting rods are connected to both sides inside the heating box, a guide plate is provided inside the heating box, and one end of the plurality of connecting rods is connected to one side of the corresponding guide plate.
[0008] Preferably, the top of the preheating frame is connected to an isolation frame a, the bottom of the isolation frame a communicates with the top of the preheating frame, a sealing plate is horizontally arranged inside the isolation frame a, a baffle is arranged inside the isolation frame a, one side of the baffle is in contact with one side of the sealing plate, an electric push rod is connected to the top of the preheating frame, one end of the electric push rod is connected to an L-shaped rod, one end of the L-shaped rod extends into the interior of the isolation frame a and connects with the top of the baffle, an isolation frame b is connected to the bottom of the preheating frame, the top of the isolation frame b communicates with the bottom of the preheating frame, one end of the baffle passes through the preheating frame and extends into the interior of the isolation frame b, a support frame is arranged at the bottom of the isolation frame b, and the cooling... A heat-conducting pipe is connected to one side of the cooling box, and the other end of the heat-conducting pipe is connected to one side of the preheating frame. A heat-conducting coil a is installed inside the cooling box. A heat-conducting rod is connected to one side of the heat-conducting coil a. One end of the heat-conducting rod extends into the heat-conducting pipe and is connected to a heat-conducting coil b. A connecting plate is connected to one side of the cooling box. A blower box is installed on the top of the connecting plate. A filter plate is installed on one side of the blower box. A motor b is installed inside the blower box. A rotating seat is driven by one side of the motor b. Multiple fan blades are connected to the outside of the rotating seat. A blower pipe is connected to one side of the blower box. One end of the blower pipe is connected to the heat-conducting pipe, and the blower pipe and the heat-conducting coil b are on the same axis.
[0009] The beneficial effects of this utility model are:
[0010] The advantage of this invention is that by using the heating tube, connecting rod and guide plate in the guide assembly, it is possible to prevent the conveyor box from shifting during the conveying process, which would cause the material to be at a lower temperature on one side, resulting in insufficient sintering and affecting the battery quality.
[0011] Secondly, by setting up the heat-conducting pipe, heat-conducting coil a, and blower box in the preheating component, the residual heat of the cooling box can be guided to the inside of the preheating frame to preheat the material to be heated in advance, so that the material can reach the reaction temperature more quickly when it enters the high-temperature zone, thereby improving product quality. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0013] Figure 2 This is a front sectional view of the overall structure of this utility model.
[0014] Figure 3 This is a half-sectional view of the overall structure of this utility model.
[0015] Figure 4 This is a schematic cross-sectional view of the heat pipe of this utility model.
[0016] Figure 5 This is a half-sectional schematic diagram of the drive groove of this utility model.
[0017] Figure 6 This utility model Figure 3 Enlarged view of point A.
[0018] Figure 7 This utility model Figure 3 Enlarged view of point B.
[0019] Figures 1-7 In the middle section: 1. Conveyor frame a; 101. Conveyor frame b; 102. Support leg; 103. Preheating frame; 104. Heating box; 105. Cooling box; 2. Drive slot; 201. Motor a; 202. Rotating rod; 3. Conveyor roller; 301. Bevel gear a; 302. Bevel gear b; 303. Conveyor box; 4. Heating tube; 401. Connecting rod; 402. Guide plate; 5. Isolation frame a; 501. Sealing plate; 502. Baffle; 503. Electric push rod; 504. L-shaped rod; 6. Isolation frame b; 601. Support frame; 7. Heat conduction tube; 701. Heat conduction coil a; 702. Heat conduction rod; 703. Heat conduction coil b; 704. Connecting plate; 705. Air box; 706. Filter plate; 707. Motor b; 708. Rotary seat; 709. Fan blade; 710. Air pipe. Detailed Implementation
[0020] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0021] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments.
[0022] like Figures 1-7As shown, a lithium iron phosphate kiln sintering device includes a conveyor frame a1, a conveyor frame b101 on one side of conveyor frame a1, two support feet 102 connected to the bottom of both conveyor frame a1 and conveyor frame b101, multiple conveyor rollers 3 between conveyor frame a1 and conveyor frame b101, a preheating frame 103 connected to the top of conveyor frame a1 and conveyor frame b101, a heating box 104 connected to one side of preheating frame 103, the heating box 104 communicating with the preheating frame 103, a cooling box 105 connected to one side of heating box 104, a guide assembly inside heating box 104 to prevent material displacement inside heating box 104, the guide assembly including: heating pipe 4, connecting rod 401 and guide plate 402, a preheating assembly on one side of cooling box 105 to guide heat from inside cooling box 105 to inside preheating frame 103, the preheating assembly including: heat conducting pipe 7, heat conducting coil a701 and air blowing box 705.
[0023] The heating pipe 4, connecting rod 401, and guide plate 402 in the guiding assembly prevent the conveying box 303 from shifting during the conveying process, which would cause the material to be sintered too slowly on one side, resulting in insufficient sintering and affecting battery quality. Secondly, the heat-conducting pipe 7, heat-conducting coil a701, and blower box 705 in the preheating assembly can guide the residual heat of the cooling box 105 into the preheating frame 103, preheating the material to be heated in advance, so that the material can reach the reaction temperature more quickly when it enters the high-temperature zone, thus improving product quality.
[0024] The conveyor frame b101 has a drive groove 2 inside. A motor a201 is installed on one side of the conveyor frame b101. A rotating rod 202 is connected to the side of the motor a201. One end of multiple conveyor rollers 3 is rotatably connected to one side of the conveyor frame a1 via a rotating shaft. The other side of the multiple conveyor rollers 3 extends to the drive groove 2 and is connected to a bevel gear a301. Multiple bevel gears b302 that are matched with bevel gears a301 are connected to the outside of the rotating rod 202. A conveyor box 303 is set on the top of the multiple conveyor rollers 3. Multiple heating tubes 4 are installed inside the heating box 104. Multiple connecting rods 401 are connected to both sides of the heating box 104. A guide plate 402 is set inside the heating box 104. One end of the multiple connecting rods 401 is connected to one side of the corresponding guide plate 402.
[0025] During material heating, motor a201 drives the rotating rod 202 to rotate. The bevel gear b302 on the rotating rod 202 meshes with the bevel gear a301 fixed at the end of the conveyor roller 3, thereby driving all the conveyor rollers 3 to rotate synchronously and convey the conveyor box 303. The conveyor rollers 3 transport the conveyor box 303 into the preheating frame 103. At this time, the electric push rod 503 extends, driving the L-shaped rod 504 and the baffle 502 to move vertically within the isolation frames a5 and b6, causing the baffle 502 to rise. Then, the conveyor rollers 3 transport the conveyor box 303... 03 is conveyed into the heating chamber 104. Since the guide plates 402 on both sides of the heating chamber 104 are rigidly fixed to the inner wall of the chamber through the connecting rod 401, forming a narrow limiting channel, when the conveyor box 303 carrying the material enters the heating chamber 104, the parallel inner wall of the guide plate 402 will continuously clamp the two sides of the conveyor box 303, forcibly restricting its horizontal displacement, ensuring that the conveyor box 303 always moves axially in the center under the conveying of the conveyor roller 3, avoiding uneven heating caused by one side being close to the chamber wall, and ensuring that the sintering reaction of each part of the material is completed synchronously.
[0026] The preheating frame 103 has an isolation frame a5 connected to its top, with the bottom of the isolation frame a5 communicating with the top of the preheating frame 103. A sealing plate 501 is horizontally arranged inside the isolation frame a5, and a baffle 502 is also arranged inside the isolation frame a5, with one side of the baffle 502 fitting against one side of the sealing plate 501. An electric push rod 503 is connected to the top of the preheating frame 103, with one end of the electric push rod 503 connected to an L-shaped rod 504. One end of the L-shaped rod 504 extends into the isolation frame a5 and connects to the top of the baffle 502. An isolation frame b6 is connected to the bottom of the preheating frame 103, with the top of the isolation frame b6 communicating with the bottom of the preheating frame 103. One end of the baffle 502 penetrates the preheating frame 103 and extends into the isolation frame b6. A support frame 601 is arranged at the bottom of the isolation frame b6. A heat pipe is connected to one side of the cooling box 105. 7. The other end of the heat pipe 7 is connected to one side of the preheating frame 103. A heat-conducting coil a701 is installed inside the cooling box 105. A heat-conducting rod 702 is connected to one side of the heat-conducting coil a701. One end of the heat-conducting rod 702 extends into the heat pipe 7 and is connected to a heat-conducting coil b703. A connecting plate 704 is connected to one side of the cooling box 105. A blower box 705 is installed on the top of the connecting plate 704. A filter plate 706 is installed on one side of the blower box 705. A motor b707 is installed inside the blower box 705. A rotating seat 708 is driven and connected to one side of the motor b707. Multiple fan blades 709 are connected to the outside of the rotating seat 708. A blower pipe 710 is connected to one side of the blower box 705. One end of the blower pipe 710 is connected to the heat pipe 7, and the blower pipe 710 and the heat-conducting coil b703 are on the same axis.
[0027] Before sintering, the material needs to be preheated. The high-temperature residual heat in the cooling box 105 is absorbed by the heat-conducting coil a701 immersed in the cooling medium and transferred to the heat-conducting coil b703 inside the heat-conducting pipe 7 via the heat-conducting rod 702. After the blower box 705 is started, the motor b707 drives the fan blade 709 to rotate, forcing the airflow through the blower pipe 710 into the heat-conducting pipe 7. The airflow is heated when it flows through the high-temperature heat-conducting coil b703, forming a high-temperature airflow, which is injected into the preheating frame 103 to preheat the material inside the preheating frame 103. To prevent heat loss, when the conveyor box 303 is conveyed to the preheating frame 103 by the conveyor roller 3 and passes the top of the isolation frame b6, the electric push rod 503 controls the baffle 502 to descend. Its side wall is tightly attached to the sealing plate 501, and its bottom is inserted into the isolation frame b6, effectively sealing the internal space of the preheating frame 103 and forming a preheating environment. When materials need to pass through, the electric push rod 503 lifts the baffle 502 to open the channel, and uses the residual heat to make the material temperature rise in a stepwise manner, shortening the temperature rise time after entering the heating box 104.
[0028] Working principle:
[0029] During material heating, motor a201 drives the rotating rod 202 to rotate. The bevel gear b302 on the rotating rod 202 meshes with the bevel gear a301 fixed at the end of the conveyor roller 3, thereby driving all the conveyor rollers 3 to rotate synchronously and convey the conveyor box 303. The conveyor rollers 3 transport the conveyor box 303 into the preheating frame 103. At this time, the electric push rod 503 extends, driving the L-shaped rod 504 and the baffle 502 to move vertically within the isolation frames a5 and b6, causing the baffle 502 to rise. Then, the conveyor rollers 3 transport the conveyor box 303... 03 is conveyed into the heating chamber 104. Since the guide plates 402 on both sides of the heating chamber 104 are rigidly fixed to the inner wall of the chamber through the connecting rod 401, forming a narrow limiting channel, when the conveyor box 303 carrying the material enters the heating chamber 104, the parallel inner wall of the guide plate 402 will continuously clamp the two sides of the conveyor box 303, forcibly restricting its horizontal displacement, ensuring that the conveyor box 303 always moves axially in the center under the conveying of the conveyor roller 3, avoiding uneven heating caused by one side being close to the chamber wall, and ensuring that the sintering reaction of each part of the material is completed synchronously.
[0030] Before sintering, the material needs to be preheated. The high-temperature residual heat in the cooling box 105 is absorbed by the heat-conducting coil a701 immersed in the cooling medium and transferred to the heat-conducting coil b703 inside the heat-conducting pipe 7 via the heat-conducting rod 702. After the blower box 705 is started, the motor b707 drives the fan blade 709 to rotate, forcing the airflow through the blower pipe 710 into the heat-conducting pipe 7. The airflow is heated when it flows through the high-temperature heat-conducting coil b703, forming a high-temperature airflow, which is injected into the preheating frame 103 to preheat the material inside the preheating frame 103. To prevent heat loss, when the conveyor box 303 is conveyed to the preheating frame 103 by the conveyor roller 3 and passes the top of the isolation frame b6, the electric push rod 503 controls the baffle 502 to descend. Its side wall is tightly attached to the sealing plate 501, and its bottom is inserted into the isolation frame b6, effectively sealing the internal space of the preheating frame 103 and forming a preheating environment. When materials need to pass through, the electric push rod 503 lifts the baffle 502 to open the channel, and uses the residual heat to make the material temperature rise in a stepwise manner, shortening the temperature rise time after entering the heating box 104.
[0031] The foregoing has provided a detailed description of a lithium iron phosphate kiln sintering apparatus according to the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. 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. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. A lithium iron phosphate kiln sintering apparatus, characterized in that, include: A conveyor frame a (1) is provided on one side of the conveyor frame a (1), and two support feet (102) are connected to the bottom of both the conveyor frame a (1) and the conveyor frame b (101). Multiple conveyor rollers (3) are provided between the conveyor frame a (1) and the conveyor frame b (101). A preheating frame (103) is connected to the top of the conveyor frame a (1) and the conveyor frame b (101). A heating box (104) is connected to one side of the preheating frame (103). The heating box (104) communicates with the preheating frame (103). A cooling box (105) is connected to one side of the heating box (104). The guide assembly installed inside the heating box (104) prevents the material from shifting inside the heating box (104). The guide assembly includes: heating tube (4), connecting rod (401) and guide plate (402). The preheating component, located on one side of the cooling box (105), guides the heat inside the cooling box (105) to the preheating frame (103). The preheating component includes a heat-conducting pipe (7), a heat-conducting coil a (701), and a blower box (705).
2. The lithium iron phosphate kiln sintering apparatus according to claim 1, characterized in that, The conveyor frame b (101) has a drive slot (2) inside. A motor a (201) is installed on one side of the conveyor frame b (101), and a rotating rod (202) is driven to one side of the motor a (201).
3. The lithium iron phosphate kiln sintering apparatus according to claim 2, characterized in that, One end of each of the multiple conveying rollers (3) is rotatably connected to one side of the conveying frame a (1) via a rotating shaft. The other side of the multiple conveying rollers (3) extends to the drive groove (2) and is connected to a bevel gear a (301). Multiple bevel gears b (302) that are used in conjunction with the bevel gear a (301) are connected to the outside of the rotating rod (202). A conveying box (303) is provided on the top of the multiple conveying rollers (3).
4. The lithium iron phosphate kiln sintering apparatus according to claim 1, characterized in that, The heating box (104) is equipped with multiple heating tubes (4), and multiple connecting rods (401) are connected to both sides of the heating box (104). A guide plate (402) is provided inside the heating box (104), and one end of each of the multiple connecting rods (401) is connected to one side of the corresponding guide plate (402).
5. The lithium iron phosphate kiln sintering apparatus according to claim 1, characterized in that, The preheating frame (103) is connected to an isolation frame a (5) at the top. The bottom of the isolation frame a (5) is connected to the top of the preheating frame (103). A sealing plate (501) is horizontally arranged inside the isolation frame a (5). A baffle (502) is arranged inside the isolation frame a (5). One side of the baffle (502) is in contact with one side of the sealing plate (501). An electric push rod (503) is connected to the top of the preheating frame (103). One end of the electric push rod (503) is connected to an L-shaped rod (504). One end of the L-shaped rod (504) extends into the isolation frame a (5) and is connected to the top of the baffle (502).
6. The lithium iron phosphate kiln sintering apparatus according to claim 5, characterized in that, The bottom of the preheating frame (103) is connected to an isolation frame b (6). The top of the isolation frame b (6) is connected to the bottom of the preheating frame (103). One end of the baffle (502) passes through the preheating frame (103) and extends into the interior of the isolation frame b (6). A support frame (601) is provided at the bottom of the isolation frame b (6).
7. The lithium iron phosphate kiln sintering apparatus according to claim 1, characterized in that, A heat-conducting pipe (7) is connected to one side of the cooling box (105), and the other end of the heat-conducting pipe (7) is connected to one side of the preheating frame (103). A heat-conducting coil a (701) is installed inside the cooling box (105). A heat-conducting rod (702) is connected to one side of the heat-conducting coil a (701). One end of the heat-conducting rod (702) extends into the heat-conducting pipe (7) and is connected to a heat-conducting coil b (703). A connecting plate (704) is connected to one side of the cooling box (105), and a blower is installed on the top of the connecting plate (704). The air blower box (705) has a filter plate (706) on one side. The air blower box (705) is equipped with a motor b (707). The motor b (707) is connected to a rotating seat (708) on one side. Multiple fan blades (709) are connected to the outside of the rotating seat (708). The air blower box (705) is connected to a blower pipe (710) on one side. One end of the blower pipe (710) is connected to the heat-conducting pipe (7), and the blower pipe (710) and the heat-conducting coil b (703) are on the same axis.