Self-recovery sintering sagger device and sintering system
By using a self-recovering sintering sagger device, lithium iron phosphate powder is introduced into the recovery zone while boiling in the sintering zone, solving the problem of powder falling to the bottom of the kiln, realizing the recovery of powder and stable operation of the kiln, and reducing production costs.
Patent Information
- Application Number
- CN202423056020.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2034-12-11
AI Technical Summary
During the high-temperature solid-state sintering process of lithium iron phosphate, the powder material boils and tumbles in the sagger, causing some powder to fall from the sides of the sagger to the bottom of the kiln, resulting in material waste and abnormal kiln operation, requiring frequent shutdowns for cleaning.
Design a self-recovering sintering sagger device, comprising a sagger body, an isolation layer, and a cover plate. The isolation layer divides the cavity into a sintering zone and a recovery zone. The cover plate covers the top of the cavity. When the material boils in the sintering zone, it crosses the isolation layer and enters the recovery zone, preventing it from falling to the bottom of the kiln. Combined with reinforcing ribs, the strength and service life of the device are improved.
It enables the self-recycling of lithium iron phosphate powder, avoids accumulation at the bottom of the kiln, reduces material waste, ensures normal operation of the kiln, and reduces production costs and downtime frequency.
Smart Images
Figure CN223636646U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to lithium battery processing technical field, especially self -recovery sintering sagger device and sintering system. BACKGROUND
[0002] With the continuous development of new energy electric vehicles, the market share of electric vehicles is higher and higher. In the field of electric vehicles, due to the pursuit of low cost, the positive material lithium iron phosphate with low price, long endurance and high cycle times is pursued by the market. Behind the continuous cost reduction, high requirements are put forward to the lithium iron phosphate positive powder manufacturers. Under the premise of continuously improving performance, it is necessary to continuously reduce the cost, which becomes the research topic of each positive powder material manufacturer.
[0003] In the high-temperature solid-phase sintering process of lithium iron phosphate, the powder material will boil and roll in the sagger. In this process, the boiling powder material will lift the cover plate of the sagger. A small part of the powder may fall from both sides of the sagger to the bottom of the kiln. In the continuous sintering process, the powder at the bottom of the kiln will accumulate more and more. The accumulation of powder at the bottom of the kiln not only causes waste of materials, but also affects the normal operation of the kiln. The kiln needs to be stopped every month for cleaning and equipment maintenance, which greatly affects normal production. SUMMARY
[0004] The utility model aims at at least solves one of the prior art technical problems. Therefore, the utility model provides a self -recovery sintering sagger device, and a sintering system is provided.
[0005] The utility model solves the technical problem of the solution scheme:
[0006] In the first aspect, the utility model provides a self -recovery sintering sagger device, comprising:
[0007] Sagger main part, provided with the cavity of the opening towards the upper;
[0008] Isolation layer, the isolation layer is located in the cavity, and the cavity is divided into sintering area and recovery area, the recovery area is arranged around the outer periphery of the sintering area, and the upper end surface of the isolation layer is lower than the upper end surface of the sagger main part;
[0009] Cover plate, the cover plate covers the upper of the cavity, and is detachably connected with the upper end surface of the sagger main part.
[0010] The utility model discloses at least has the following beneficial effects: sintering area is used to load material, when sintering, the upper portion of cavity is closed with apron, when the material boils and rolls in sintering area, can cross the isolation layer and flow to the recovery area, because of being provided with recovery area, will not directly drop to the bottom of kiln, thereby can avoid the powder accumulation condition of kiln bottom surface, and the kiln can normally operate, need not regularly stop kiln and stop production to clean the bottom of furnace, also can avoid the waste of material.
[0011] As a further improvement of the above technical solution, the end face of the cover plate towards the cavity is provided with a boss, the outer edge of the boss forms a clamping groove, and the outer peripheral wall of the boss abuts against the inner peripheral wall of the saggar body.
[0012] As a further improvement of the above technical solution, a gap channel is formed between the lower end face of the boss and the upper end face of the isolation layer, and the gap channel communicates with the recovery area.
[0013] As a further improvement of the above technical solution, the self-recovery sintering saggar device further comprises:
[0014] The reinforcing ribs are arranged in the recovery area, and the reinforcing ribs are connected with the outer side wall face of the isolation layer and the inner side wall face of the saggar body, respectively.
[0015] As a further improvement of the above technical solution, the recovery area is in the shape of a rectangular ring, the reinforcing ribs include first reinforcing ribs and second reinforcing ribs, the first reinforcing ribs are arranged at the four corners of the recovery area, and the second reinforcing ribs are arranged in plurality, at least one second reinforcing rib is arranged between any two adjacent first reinforcing ribs.
[0016] As a further improvement of the above technical solution, the bottom face of the recovery area is in the shape of a curved surface, and the curved surface is concave downward.
[0017] As a further improvement of the above technical solution, the cover plate is made of graphite material.
[0018] In the second aspect, the utility model provides a sintering system which comprises the self-recovery sintering saggar device according to any one of the above technical solutions.
[0019] The sintering system can realize the recovery of boiling material, avoid the overflow of boiling material to the bottom of the kiln, and thus avoid the cleaning of the bottom of the kiln, the shutdown of the kiln and the stop of production, and further save energy and reduce production cost.
[0020] As a further improvement of the above technical solution, the sintering system further comprises an automatic saggar covering machine, the automatic saggar covering machine is movably connected with the cover plate, and the automatic saggar covering machine is used for covering the cover plate to the saggar body.
[0021] As a further improvement of the above technical solution, the sintering system further comprises a sagger turning machine, which is movably connected with the sagger body and used for turning over the sagger body. BRIEF DESCRIPTION OF DRAWINGS
[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly described below. Obviously, the described drawings are only some of the embodiments of the present application, not all embodiments, and those skilled in the art can obtain other design schemes and drawings according to these drawings without creative labor.
[0023] Figure 1 is the overall structure schematic diagram of the self-recovery sintering sagger device of the embodiment of the present application;
[0024] Figure 2 is the structure schematic diagram of the sagger body of the self-recovery sintering sagger device of the embodiment of the present application;
[0025] Figure 3 is the top view of the sagger body of the self-recovery sintering sagger device of the embodiment of the present application;
[0026] Figure 4 is the internal structure schematic diagram of the self-recovery sintering sagger device of the embodiment of the present application;
[0027] Figure 5 is Figure 4 the enlarged structure schematic diagram of part A in the figure.
[0028] Reference signs: 100, sagger body; 110, sintering area; 200, cover plate; 210, boss; 220, gap channel; 300, isolation layer; 310, recovery area; 400, first reinforcing rib; 500, second reinforcing rib. DETAILED DESCRIPTION
[0029] The embodiments of the present application will be described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.
[0030] In the description of the utility model, if the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, more than and the like are understood as not including the number, above, below, within and the like are understood as including the number.If it is described to the first, the second is only used for distinguishing the purpose of technical features, and can not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.
[0031] In the description of the utility model, if the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, more than and the like are understood as not including the number, above, below, within and the like are understood as including the number.If it is described to the first, the second is only used for distinguishing the purpose of technical features, and can not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.
[0032] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installation, connection and the like should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the utility model combined with the specific content of the technical scheme.
[0033] Obviously, the described embodiments are only part of the embodiments of the utility model, not all embodiments, based on the embodiments of the utility model, the other embodiments obtained by the person skilled in the art without creative labor all belong to the protection scope of the utility model.Various technical features in the utility model can be combined interactively without mutual contradiction and conflict.
[0034] In the first aspect, the utility model embodiment proposes a self-recovery sintering saggar device, which can be applied to lithium iron phosphate sintering, can realize self-recovery of lithium iron phosphate powder, avoid lithium iron phosphate powder accumulation in the bottom of the kiln, reduce material waste, also avoid the abnormal situation of kiln operation caused by powder accumulation.
[0035] In the embodiment, referring to Figure 1 And Figure 2 The self-recovery sintering saggar device comprises a saggar main body 100, an isolation layer 300 and a cover plate 200.The saggar main body 100 is provided with a cavity opening upward, the isolation layer 300 is arranged in the cavity, and the cavity can be divided into a sintering area 110 and a recovery area 310, the recovery area 310 is arranged around the outer periphery of the sintering area 110, and the upper end surface of the isolation layer 300 is lower than the upper end surface of the saggar main body 100.
[0036] The cover plate 200 is used to cover the cavity of the sagger main body 100 in the sagger sintering process, which covers the top of the cavity and is detachably connected with the upper end surface of the sagger main body 100. When the cavity is covered by the cover plate 200, the material in the cavity can be prevented from overflowing due to boiling during the sintering process.
[0037] It can be understood that the sintering area 110 is used to place the lithium iron phosphate powder. In use, the lithium iron phosphate powder is loaded to be flush with the upper end surface of the isolation layer 300. The self-recycling sagger sintering device loaded with the lithium iron phosphate powder is sent into the kiln for heating. During the high-temperature sintering process, the lithium iron phosphate material boils and rolls after reaching the boiling point. The material at the edge of the sintering area 110 can cross the upper end surface of the isolation layer 300 and fall into the recycling area 310, instead of directly falling to the bottom of the kiln, thereby avoiding the accumulation of powder on the bottom of the kiln.
[0038] It can be understood that the powder entering the recycling area 310 will also continue to be heated and sintered. After sintering is completed, the sagger main body 100 is directly turned over, and the powder in the recycling area 310 and the sintering area 110 is poured out, thereby realizing the recycling of the powder, which is simple and convenient to operate.
[0039] In some embodiments, referring to Figure 4 and Figure 5 , the middle part of the cover plate 200 is provided with a boss 210, which is downwardly protruding. A clamping groove is formed at the edge of the boss 210, which is matched with the side wall surface of the sagger main body 100. When the cover plate 200 is covered on the sagger main body 100, the boss 210 is attached to the inner wall of the cavity, and the position of the cover plate 200 is limited, thereby avoiding the movement of the cover plate 200 relative to the sagger main body 100. Especially when the lithium iron phosphate powder in the cavity boils, the cover plate 200 can be prevented from being pushed open to expose the upper end opening of the cavity, and the powder boiling and falling to the bottom of the kiln can be further avoided.
[0040] In this embodiment, a gap channel 220 is formed between the lower end surface of the boss 210 and the upper end surface of the isolation layer 300, which is communicated with the recycling area 310. When the powder boils, the powder can enter the recycling area 310 through the preset gap channel 220, further avoiding the upward pushing of the cover plate 200, and making it more convenient for the powder to fall into the recycling area 310 for recycling.
[0041] In some embodiments, referring to Figure 2 and Figure 3 , the self-recycling sagger sintering device further comprises a reinforcing rib, which is arranged in the recycling area 310. The inner side of the reinforcing rib is connected with the outer side wall surface of the isolation layer 300, and the outer side of the reinforcing rib is connected with the sagger main body 100.
[0042] The reinforcing ribs are used to increase the strength of the whole self-recycling sintering saggar device, effectively prevent the saggar body 100 and the isolation layer 300 from cracking due to stress deformation, and effectively prolong the service life of the self-recycling sintering saggar device.
[0043] In the embodiment, the cross section of the saggar body 100 is rectangular, the cross section of the sintering area 110 in the middle of the cavity is also rectangular, and the recycling area 310 formed by the side wall of the saggar body 100 and the isolation layer 300 is a rectangular ring. The reinforcing ribs include first reinforcing ribs 400 and second reinforcing ribs 500. The first reinforcing ribs 400 are provided with four first reinforcing ribs 400, and each first reinforcing rib 400 is arranged at a corner of the recycling area 310. The second reinforcing ribs 500 are also provided with four second reinforcing ribs 500, and each second reinforcing rib 500 is arranged between two adjacent first reinforcing ribs 400, thereby dividing the recycling area 310 between the two first reinforcing ribs 400 into two parts.
[0044] It can be understood that the first reinforcing ribs 400 arranged at the four corners of the recycling area 310 can increase the strength of the four corners of the saggar body 100, effectively prevent the saggar body 100 and the isolation layer 300 from cracking at the corners due to stress deformation, and effectively prolong the service life of the self-recycling sintering saggar device.
[0045] The arrangement of the second reinforcing ribs 500 can further avoid the deformation of the recycling area 310 between the two adjacent first reinforcing ribs 400, further avoid the cracking between the saggar body 100 and the isolation layer 300, and further improve the service life of the self-recycling sintering saggar device.
[0046] In some embodiments, referring to Figure 4 The bottom surface of the recycling area 310 is an arc surface, which is concave downward. In this way, the powder entering the recycling area 310 can be prevented from accumulating at the included angle between the isolation layer 300 and the bottom surface of the recycling area 310 or at the included angle between the inner wall of the saggar body 100 and the bottom surface of the recycling area 310, which is more conducive to the cleaning of the recycling area 310, more conducive to the recycling of the powder in the recycling area 310, and further reduces the waste of the powder.
[0047] In some embodiments, the four corners of the sintering area 110 are rounded, which can prevent the powder from accumulating at the four corners of the sintering area 110, and is more conducive to the cleaning of the sintering area 110 and the recycling of the powder.
[0048] In some embodiments, the cover plate 200 is made of graphite material. Graphite has good high-temperature resistance and is not easy to deform or damage. Moreover, graphite material has strong corrosion resistance and good thermal conductivity, and the sintering yield of lithium iron phosphate is higher.
[0049] In some embodiments, the saggar body 100 is also made of graphite material.
[0050] In another aspect, the utility model also provides a sintering system, the sintering system includes the self-recovery lithium iron phosphate saggar device of any one of the embodiments in the first aspect.
[0051] It can be understood that the sintering system also includes a heating device, a kiln and other equipment for providing heat, and during sintering, the self-recovery lithium iron phosphate saggar device is loaded with lithium iron phosphate and placed in the kiln for heating. Since the self-recovery lithium iron phosphate saggar device can avoid the situation that lithium iron phosphate overflows to the bottom of the kiln during the sintering process due to boiling, the sintering system can operate more smoothly and does not need to be shut down for cleaning the bottom of the kiln every month.
[0052] In some embodiments, the sintering system also includes an automatic saggar covering machine, the output end of the automatic saggar covering machine is movably connected with the cover plate 200 of the self-recovery sintering saggar device, and after the lithium iron phosphate is placed in the sintering area 110 of the self-recovery lithium iron phosphate saggar device, the cover plate 200 can be automatically covered on the saggar body 100, so that the cover plate 200 is buckled with the upper end of the saggar body 100 to avoid the overflow of lithium iron phosphate during the sintering process.
[0053] In some embodiments, the output end of the automatic saggar covering machine is a mechanical hand, which controls the grabbing and moving of the cover plate 200 to realize the closure between the cover plate 200 and the saggar body 100.
[0054] In some embodiments, the sintering system also includes a saggar overturning machine. The output end of the saggar overturning machine is movably connected with the saggar body 100 and can overturn the saggar body 100, so that the lithium iron phosphate loaded in the sintering area 110 and the recovery area 310 can be poured out to facilitate the collection of lithium iron phosphate.
[0055] In some embodiments, the output end of the saggar overturning machine is a mechanical hand, which is arranged on the receiving bin. After the self-recovery sintering saggar device loaded with sintered lithium iron phosphate is transferred to the saggar overturning machine by the worker, the saggar body 100 is grabbed and overturned by the output end of the saggar overturning machine, so that the lithium iron phosphate material in the sintering area 110 is poured into the receiving bin of the next process together with the lithium iron phosphate material in the recovery area 310.
[0056] In some embodiments, the sintering system also includes a cover plate taking machine, the output end of the cover plate taking machine is movably connected with the cover plate 200, and the cover plate 200 can be grabbed and moved before the saggar overturning action to realize the separation between the cover plate 200 and the saggar body 100, so as to open the upper end of the cavity to facilitate the subsequent saggar overturning action.
[0057] In some embodiments, the sintering system further comprises a conveying line for conveying the recycled sintering pot device, after the recycled sintering pot device is arranged on the conveying line, the conveying line drives the recycled sintering pot device to pass through the automatic pot covering machine, the kiln, the pot uncovering machine and the pot overturning machine in sequence, so that the automation degree of sintering processing can be improved, the labor intensity of workers can be reduced, and the labor cost can be reduced.
[0058] The sintering system is used for sintering lithium iron phosphate, the boiling materials can be recycled, the materials are prevented from overflowing to the bottom of the kiln, the dust cleaning work of the bottom of the kiln is not needed, the kiln is not needed to be stopped, the energy saving and environmental protection are achieved, and the production cost is reduced.
[0059] The preferred embodiments of the present application are described in detail above, but the present application is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the present application. The equivalent modifications or replacements are all included in the scope defined by the claims of the present application.
Claims
1. A self-reclaiming sintering pot device, characterized by, The self-recycling sintering saggar device comprises: a saggar body (100) provided with a cavity open upward; an isolation layer (300) provided in the cavity and separating the cavity into a sintering area (110) and a recycling area (310), the recycling area (310) being arranged around the outer periphery of the sintering area (110), and the upper end surface of the isolation layer (300) being lower than the upper end surface of the saggar body (100); a cover plate (200) covering the cavity and detachably connected with the upper end surface of the saggar body (100).
2. The self-reclaiming sintering saggar device of claim 1, wherein, The end surface of the cover plate (200) towards the cavity is provided with a boss (210), and the outer peripheral wall of the boss (210) abuts against the inner peripheral wall of the saggar body (100).
3. The self-reclaiming sintering saggar device of claim 2, wherein, The lower end surface of the boss (210) and the upper end surface of the isolation layer (300) form a gap channel (220) in communication with the recycling area (310).
4. The self-reclaiming sintering saggar device of claim 1, wherein, The self-recycling sintering saggar device further comprises: a reinforcing rib provided in the recycling area (310), and connected with the outer lateral wall surface of the isolation layer (300) and the inner lateral wall surface of the saggar body (100) respectively.
5. The self-reclaiming sintering saggar device of claim 4, wherein, The recycling area (310) is in the shape of a rectangular ring, the reinforcing rib comprises a first reinforcing rib (400) and a second reinforcing rib (500), the first reinforcing rib (400) is arranged at each of the four corners of the recycling area (310), and a plurality of second reinforcing ribs (500) are arranged, at least one second reinforcing rib (500) being arranged between any two adjacent first reinforcing ribs (400).
6. The self-reclaiming sintering saggar device of claim 1, wherein, The bottom surface of the recycling area (310) is in the shape of a concave arc surface.
7. The self-reclaiming sintering saggar device of claim 1, wherein, The cover plate (200) is made of graphite material.
8. A sintering system characterized by, The sintering system comprises the self-recycling sintering saggar device.
9. The sintering system of claim 8, wherein, The sintering system further comprises an automatic saggar covering machine, the automatic saggar covering machine being movably connected with the cover plate (200), and the automatic saggar covering machine being used for covering the cover plate (200) onto the saggar body (100).
10. The sintering system of claim 8, wherein, The sintering system further comprises a saggar overturning machine, the saggar overturning machine being movably connected with the saggar body (100), and the saggar overturning machine being used for overturning the saggar body (100).