A lithium battery furnace replacement chamber with an airflow circulation structure

Abstract

The present invention relates to the technical field of lithium battery kilns, and specifically to a lithium battery kiln replacement chamber with an airflow circulation structure, including a lithium battery kiln replacement chamber shell, a plurality of groups of linearly equidistantly distributed conveying porcelain rollers are arranged at the bottom of the lithium battery kiln replacement chamber shell, a sealing gate one, a sealing gate two and a sealing gate three are also arranged on the lithium battery kiln replacement chamber shell, and an elastic airbag is arranged on the sealing gate three; a gas circulation component, the gas circulation component includes an exhaust compression separation device arranged on the lithium battery kiln replacement chamber shell and a liquid storage tank arranged on the side wall of the lithium battery kiln replacement chamber shell and connected to the exhaust compression separation device, and a cooling plate is arranged on the liquid storage tank. The present invention extracts gas and compresses and separates gas through the exhaust compression separation device, cooperates with the cooling plate to cool the lithium battery kiln replacement chamber shell, and replenishes inert gas in the lithium battery kiln replacement chamber shell, without the need for additional replenishment, saving energy consumption of inert gas, and being more environmentally friendly.

Description

Technical Field

[0001] The invention relates to the technical field of lithium battery kilns, and in particular to a lithium battery kiln replacement chamber with an airflow circulation structure. Background Art

[0002] A lithium battery kiln is a kiln equipment used for sintering lithium battery materials, and a lithium battery kiln replacement chamber is a device installed on the feed port of a lithium battery kiln for transferring and discharging lithium battery materials.

[0003] However, during use, the lithium battery materials suddenly come into contact with the external environment, and the huge temperature difference change can easily cause the lithium battery materials to shrink and be damaged, affecting the qualified rate of the lithium battery materials after being processed and transferred out of the kiln. For this reason, the China Patent Network has published a notice number: CN116857954A, and the name is a lithium battery kiln replacement chamber with an airflow circulation structure. By providing an exhaust pipe 1, during the lithium battery material transfer process, the gas in the kiln can be gradually extracted to preheat each replacement chamber from back to front. At the same time, a left-right circulating airflow can be formed in each replacement chamber, which enhances the balanced stability of the lithium battery material during the transfer process, and is conducive to avoiding shrinkage damage caused by sudden heating and cooling during the transfer of the lithium battery material.

[0004] In the above-mentioned public documents, when the lithium battery material is taken out after cooling, the replacement chamber will be mixed with air, and the nitrogen inside will also leak out. Although the kiln exhaust is replaced with the extracted internal air so that the air in the replacement chamber is fully discharged, the overall content of inert gases such as nitrogen will be reduced, and nitrogen needs to be continuously added to the circulation system. For this reason, a lithium battery kiln replacement chamber with an airflow circulation structure is proposed. Summary of the invention

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a lithium battery kiln replacement chamber with an airflow circulation structure, which can effectively solve the problem of nitrogen loss when lithium battery materials are taken out in the prior art, which requires continuous addition and increases energy consumption.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] The present invention provides a lithium battery kiln replacement chamber with an airflow circulation structure, comprising:

[0008] A lithium battery kiln replacement chamber shell for providing a sealed space for conveying lithium battery materials, wherein a plurality of groups of conveying ceramic rollers are linearly and equidistantly distributed at the bottom of the lithium battery kiln replacement chamber shell, and a sealing gate 1, a sealing gate 2 and a sealing gate 3 are also provided on the lithium battery kiln replacement chamber shell, and the sealing gate 1, the sealing gate 2 and the sealing gate 3 are sequentially distributed from the discharge end to the feed end, and an elastic airbag for pushing the lithium battery material when expanding is provided on the sealing gate 3;

[0009] A gas circulation component, the gas circulation component includes an exhaust compression separation device arranged on the shell of the lithium battery kiln replacement chamber and located between the sealing gate one and the sealing gate two, and a liquid storage tank arranged on the side wall of the shell of the lithium battery kiln replacement chamber and connected to the exhaust compression separation device, and the liquid storage tank is provided with a cooling plate for gradually cooling the lithium battery material in the shell of the lithium battery kiln replacement chamber.

[0010] Furthermore, the elastic airbag is located on a side of the sealing gate three facing the sealing gate two, and the sealing gate three is provided with an air inlet hole communicating with the outside.

[0011] Furthermore, the air inlet end of the air extraction and compression separation device extends into the shell of the lithium battery kiln replacement chamber and is located between sealing gate one and sealing gate two. When sealing gate two is opened and sealing gate one and sealing gate three are closed, the air extraction and compression separation device extracts air to generate negative pressure in the shell of the lithium battery kiln replacement chamber, and the elastic airbag on sealing gate three expands and pushes the lithium battery material into between sealing gate one and sealing gate two.

[0012] Furthermore, an air guide groove is provided on the shell of the lithium battery kiln replacement chamber, and multiple groups of the conveying porcelain rollers are connected by a transmission mechanism, and impellers extending into the air guide groove are provided on both sides of the conveying porcelain rollers.

[0013] Furthermore, the gas circulation component also includes a gas pipe 1, and the exhaust end of the gas pipe 1 extends into the gas guide groove. The gas pipe 1 is used to introduce the recovered gas into the gas guide groove to drive the conveying porcelain roller to rotate.

[0014] Furthermore, the liquid storage tank is connected to the air extraction compression separation device through the air supply pipe 2, a plurality of air vents connected to the liquid storage tank are provided on the cooling plate, and an electrically controlled valve is provided at the air inlet end of the air vents, and an exhaust hole connected to the air vents is provided on the side of the cooling plate away from the liquid storage tank.

[0015] Furthermore, a speed reducer is provided between the impeller and the conveying porcelain roller to slow down the moving speed of the lithium battery material on the conveying porcelain roller when the impeller rotates.

[0016] Furthermore, a protective shell covering the gas circulation assembly is provided on the top of the lithium battery kiln replacement chamber shell, and a cylinder for driving sealing gate one, sealing gate two and sealing gate three is provided inside the protective shell.

[0017] Furthermore, a controller is provided in the protective shell, and the controller is respectively communicated with the cylinders on sealing gate one, sealing gate two and sealing gate three. The controller is used to control the rising of sealing gate one and sealing gate three when sealing gate two descends, and the falling of sealing gate one and sealing gate three when sealing gate two rises. Beneficial Effects

[0018] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects:

[0019] 1. The gas at the discharge end is extracted and compressed and separated by the gas extraction compression separation equipment. The shell of the lithium battery kiln replacement chamber is cooled down by the cooling plate. At the same time, the shell of the lithium battery kiln replacement chamber is supplemented with inert gas. No additional supplement is required, which saves energy consumption of inert gas and is more environmentally friendly.

[0020] Second, the gas is extracted by the air extraction and compression separation equipment, and the staggered lifting and lowering of the sealing gates 1, 2 and 3 are coordinated to prevent the air from entering the shell of the lithium battery kiln replacement chamber, thereby preventing the oxygen in the air from reacting with the high-temperature lithium battery materials, effectively protecting the lithium battery materials in the shell of the lithium battery kiln replacement chamber, and the automatic movement of the lithium battery materials is realized by the elastic airbag on the sealing gate 3 in combination with the air extraction and compression separation equipment, which is more convenient;

[0021] 3. After the vacuum compression separation equipment compresses and separates the gas, it generates high-velocity gas through vaporization, and cooperates with the impeller and transmission mechanism on the conveying porcelain roller to drive the conveying porcelain roller to automatically rotate to convey the lithium battery material, which simplifies the structure again, reduces the use of energy equipment, and reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a partial cross-sectional view of the present invention;

[0025] Figure 3 It is a schematic diagram of the installation of 25 on 1 of the present invention;

[0026] Figure 4 for Figure 3 The enlarged view of point A in the middle;

[0027] Figure 5 It is a schematic diagram of the partial structure of the present invention 14;

[0028] Figure 6 It is a partial cross-sectional view of the present invention 13;

[0029] Figure 7 It is a schematic diagram of the connection structure of 24 and 25 of the present invention.

[0030] Figure numerals: 1. Lithium battery kiln replacement chamber shell; 101. Air guide groove; 11. Sealing gate one; 12. Sealing gate two; 13. Sealing gate three; 131. Elastic airbag; 14. Conveying porcelain roller; 141. Impeller; 142. Transmission mechanism; 2. Gas circulation component; 21. Vacuum compression separation equipment; 22. Gas pipe one; 23. Gas pipe two; 24. Liquid storage tank; 25. Cooling plate; 251. Vent; 252. Exhaust hole. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] The present invention will be further described below in conjunction with the embodiments. Example

[0033] A lithium battery kiln replacement chamber with an air circulation structure, see attached Figure 1-7 ,include:

[0034] A lithium battery kiln replacement chamber shell 1 is used to provide a sealed space for conveying lithium battery materials. A plurality of groups of linearly equidistantly distributed conveying ceramic rollers 14 are provided at the bottom of the lithium battery kiln replacement chamber shell 1. The lithium battery materials in the lithium battery kiln replacement chamber shell 1 are driven to move and gradually cool down by the rotation of the conveying ceramic rollers 14.

[0035] Specifically, an air guide groove 101 is provided on the shell 1 of the lithium battery kiln replacement chamber, and multiple groups of conveying porcelain rollers 14 are connected through a transmission mechanism 142, and impellers 141 extending into the air guide groove 101 are provided on both sides of the conveying porcelain rollers 14. When any group of impellers 141 rotates, the conveying porcelain rollers 14 can be driven to rotate, thereby realizing the continuous movement of lithium battery materials.

[0036] Furthermore, a reducer is provided between the impeller 141 and the conveying porcelain roller 14 to slow down the moving speed of the lithium battery material on the conveying porcelain roller 14 when the impeller 141 rotates, thereby preventing the lithium battery material from moving too fast in the lithium battery kiln replacement chamber shell 1, resulting in insufficient cooling or inadequate cooling, thereby improving the cooling effect.

[0037] The lithium battery kiln replacement chamber shell 1 is also provided with a sealing gate 11, a sealing gate 2 12 and a sealing gate 3 13, and the sealing gate 11, the sealing gate 2 12 and the sealing gate 3 13 are distributed in sequence from the discharge end to the feed end, wherein a protective shell covering the gas circulation component 2 is provided on the top of the lithium battery kiln replacement chamber shell 1, and a cylinder for driving the sealing gate 1 11, the sealing gate 2 12 and the sealing gate 3 13 is provided in the protective shell, and a controller is provided in the protective shell, and the controller is respectively communicated with the cylinders on the sealing gate 1 11, the sealing gate 2 12 and the sealing gate 3 13 The controller is used to control the sealing gate 11 and the sealing gate 3 13 to rise when the sealing gate 2 12 descends, and the sealing gate 11 and the sealing gate 3 13 to descend when the sealing gate 2 12 rises; the sealing gate 11, the sealing gate 2 12 and the sealing gate 3 13 are staggered and opened to realize the staged sealing of the lithium battery kiln replacement chamber shell 1, to prevent the external air from entering the lithium battery kiln replacement chamber shell 1 when the lithium battery material is removed, and to effectively prevent the oxygen in the air from reacting with the lithium battery material that has not been completely cooled down, and to protect the lithium battery material, wherein the sealing gate 3 13 is provided with a When the sealing gate 11 and the sealing gate 3 are inflated, the elastic airbag 131 pushes the lithium battery material. The elastic airbag 131 is located on the side of the sealing gate 3 13 facing the sealing gate 2 12, and the sealing gate 3 13 is provided with an air inlet hole connected to the outside world. The air inlet hole is used for the air intake and exhaust of the elastic airbag 131. When the sealing gate 1 11 and the sealing gate 3 13 are under negative pressure, the elastic airbag 131 expands. When the pressure between the sealing gate 1 11 and the sealing gate 3 13 is released, the elastic airbag 131 is reset and the gas is discharged from the air inlet hole. When the lithium battery material is ready to be removed, the sealing gate 2 12 is opened and the sealing gate 1 11 and the sealing gate 3 are closed. 13. The elastic airbag 131 on the sealing gate three 13 expands to move the lithium battery material to between the sealing gate one 11 and the sealing gate two 12, and then the sealing gate two 12 descends, and the sealing gate one 11 and the sealing gate three 13 rise a certain distance and then continue to rise to a high position after the elastic airbag 131 is reset, and then the conveying porcelain roller 14 continues to rotate to move the completely cooled lithium battery material out of the lithium battery kiln replacement chamber shell 1, and at the same time move the lithium battery material inside the lithium battery kiln replacement chamber shell 1 to between the sealing gate two 12 and the sealing gate three 13, and repeat the above operation again to move the lithium battery material out.

[0038] The gas circulation component 2 includes an exhaust compression separation device 21 arranged on the lithium battery kiln replacement chamber shell 1 and located between the sealing gate 1 11 and the sealing gate 2 12. The exhaust compression separation device 21 is used to extract the gas between the sealing gate 1 11 and the sealing gate 2 12, wherein the air inlet end of the exhaust compression separation device 21 extends into the lithium battery kiln replacement chamber shell 1 and is located between the sealing gate 1 11 and the sealing gate 2 12. When the sealing gate 2 12 is opened and the sealing gate 1 11 and the sealing gate 3 13 are closed When the lithium battery furnace replacement chamber shell 1 is closed, the air extraction compression separation device 21 extracts air to generate negative pressure in the lithium battery furnace replacement chamber shell 1, and the elastic airbag 131 on the sealing gate three 13 expands and pushes the lithium battery material into between the sealing gate one 11 and the sealing gate two 12. When the lithium battery material in the lithium battery furnace replacement chamber shell 1 is moved out, air will enter. At this time, the air extraction compression separation device 21 extracts the air and the inert gas in the lithium battery furnace replacement chamber shell 1 at the same time and compresses and separates them. The side wall of the lithium battery furnace replacement chamber shell 1 and the air extraction compression separation device 21 are arranged on the side wall of the lithium battery furnace replacement chamber shell 1 and are connected to the air extraction compression separation device 21. The liquid storage tank 24 connected to the device 21 is used to store the liquefied inert gas after separation. The liquid storage tank 24 is provided with a cooling plate 25 for gradually cooling the lithium battery material in the lithium battery kiln replacement chamber shell 1. Specifically, the liquid storage tank 24 is connected to the air extraction compression separation device 21 through the gas transmission pipe 23. The cooling plate 25 is provided with a plurality of vents 251 connected to the liquid storage tank 24, and the air inlet end of the vent 251 is provided with an electric control valve. By controlling the opening of the electric control valve to release pressure, the liquefied inert gas is instantly vaporized, and the gas absorbs heat and enters the vaporization process. The gas enters the vent hole 251 to cool down the shell 1 of the lithium battery kiln replacement chamber. On the other hand, since the side of the cooling plate 25 away from the liquid storage tank 24 is provided with an exhaust hole 252 connected with the vent hole 251, the gas after heat exchange enters the shell 1 of the lithium battery kiln replacement chamber from the exhaust hole 252, which not only reduces the stability inside the shell 1 of the lithium battery kiln replacement chamber when passing through the cooling plate 25, but also rises to a certain temperature when reaching the exhaust hole 252, thereby preventing the performance of the lithium battery material from being affected by excessive temperature difference when entering the shell 1 of the lithium battery kiln replacement chamber.

[0039] In addition, the gas circulation component 2 also includes a gas pipe 22, and the exhaust end of the gas pipe 22 extends into the gas guide groove 101. The gas pipe 22 is used to introduce the recovered gas into the gas guide groove 101 to drive the conveying porcelain roller 14 to rotate. After the gas is compressed and separated by the vacuum compression separation device 21, the liquefied air containing oxygen is introduced into the gas guide groove 101. The liquefied air vaporizes and increases its volume in an instant, generating a fast-flowing airflow in the gas guide groove 101, thereby driving the impeller 141 to rotate, and cooperating with the transmission mechanism 142 to drive the conveying porcelain roller 14 to rotate and convey the lithium battery material in the lithium battery kiln replacement chamber shell 1.

[0040] Working principle: When the lithium battery material in the lithium battery kiln replacement chamber shell 1 moves to the discharge end, the cylinder controls the sealing gate 1 11 and the sealing gate 3 13 to rise. When the lithium battery material moves between the sealing gate 2 12 and the sealing gate 3 13, the sealing gate 1 11 and the sealing gate 3 13 are closed and the sealing gate 2 12 is opened, and the exhaust compression separation device 21 is started to exhaust. At this time, the sealing gate 1 11 to the sealing gate 3 13 ends in the lithium battery kiln replacement chamber shell 1 are in a negative pressure state. At the same time, the elastic airbag 131 is squeezed by the external gas, and the elastic airbag 131 expands to push the lithium battery material to move between the sealing gate 1 11 and the sealing gate 2 12. Then the sealing gate 2 12 descends to seal the space between the sealing gate 1 11 and the sealing gate 2 12. The sealing gate 1 11 and the sealing gate 3 13 first rise for a period of time to release the air. The air pressure from the sealing gate 2 12 to the sealing gate 3 13 end is released, and the elastic airbag 131 is reset and retracted, and then the sealing gate 1 11 and the sealing gate 3 13 continue to rise to a high position, and the vacuum compression separation device 21 works to respectively discharge the separated compressed gas through the gas pipe 1 22 and the gas pipe 2 23, and the inert gas compressed liquid is introduced into the liquid storage tank 24, and discharged through the vent 251 to cooperate with the cooling plate 25 to cool the lithium battery kiln replacement chamber shell 1, and at the same time, the inert gas after heat exchange is introduced into the lithium battery kiln replacement chamber shell 1 again through the exhaust hole 252, and the lithium battery kiln replacement chamber shell 1 is supplemented with inert gas, and at the same time, the non-inert gas compressed liquid is introduced into the air guide groove 101, and then a high-speed airflow is formed to blow the impeller 141, thereby cooperating with the transmission mechanism 142 to drive the conveying porcelain roller 14 to transport the lithium battery material.

[0041] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A lithium battery kiln replacement chamber with an airflow circulation structure, characterized in that: include: A lithium battery kiln replacement chamber shell (1) for providing a sealed space for conveying lithium battery materials, wherein a plurality of groups of conveying ceramic rollers (14) are provided at the bottom of the lithium battery kiln replacement chamber shell (1) and are linearly and equidistantly distributed, and a sealing gate 1 (11), a sealing gate 2 (12) and a sealing gate 3 (13) are also provided on the lithium battery kiln replacement chamber shell (1), and the sealing gate 1 (11), the sealing gate 2 (12) and the sealing gate 3 (13) are distributed in sequence from the discharge end to the feed end, and the sealing gate 3 (13) is provided with an elastic air bag (131) for pushing the lithium battery material when expanding; A gas circulation assembly (2), the gas circulation assembly (2) comprising an exhaust compression separation device (21) arranged on a lithium battery furnace replacement chamber shell (1) and located between a sealing gate 1 (11) and a sealing gate 2 (12), and a liquid storage tank (24) arranged on a side wall of the lithium battery furnace replacement chamber shell (1) and connected to the exhaust compression separation device (21), wherein the liquid storage tank (24) is provided with a cooling plate (25) for gradually cooling the lithium battery material in the lithium battery furnace replacement chamber shell (1).

2. The lithium battery kiln replacement chamber with an airflow circulation structure according to claim 1, characterized in that: The elastic airbag (131) is located on the side of the sealing gate three (13) facing the sealing gate two (12), and the sealing gate three (13) is provided with an air inlet hole communicating with the outside.

3. The lithium battery kiln replacement chamber with an airflow circulation structure according to claim 2 is characterized in that: The air inlet end of the air extraction compression separation device (21) extends into the lithium battery kiln replacement chamber shell (1) and is located between the sealing gate one (11) and the sealing gate two (12). When the sealing gate two (12) is opened and the sealing gate one (11) and the sealing gate three (13) are closed, the air extraction compression separation device (21) extracts air to generate negative pressure in the lithium battery kiln replacement chamber shell (1), and the elastic air bag (131) on the sealing gate three (13) expands and pushes the lithium battery material into between the sealing gate one (11) and the sealing gate two (12).

4. The lithium battery kiln replacement chamber with an airflow circulation structure according to claim 1, characterized in that: An air guide groove (101) is provided on the housing (1) of the lithium battery kiln replacement chamber, and a plurality of groups of the conveying porcelain rollers (14) are connected in transmission via a transmission mechanism (142), and impellers (141) extending into the air guide groove (101) are provided on both sides of the conveying porcelain rollers (14).

5. The lithium battery kiln replacement chamber with an airflow circulation structure according to claim 4, characterized in that: The gas circulation assembly (2) further comprises a gas delivery pipe (22), wherein the exhaust end of the gas delivery pipe (22) extends into the gas guide groove (101), and the gas delivery pipe (22) is used to guide the recovered gas into the gas guide groove (101) to drive the conveying porcelain roller (14) to rotate.

6. The lithium battery kiln replacement chamber with an airflow circulation structure according to claim 1, characterized in that: The liquid storage tank (24) is connected to the air extraction compression separation device (21) via the second air supply pipe (23); the cooling plate (25) is provided with a plurality of groups of vent holes (251) connected to the liquid storage tank (24); an electric control valve is provided at the air inlet end of the vent holes (251); and an exhaust hole (252) connected to the vent holes (251) is provided on a side of the cooling plate (25) away from the liquid storage tank (24).

7. The lithium battery kiln replacement chamber with an airflow circulation structure according to claim 4, characterized in that: A speed reducer is provided between the impeller (141) and the conveying porcelain roller (14), which slows down the moving speed of the lithium battery material on the conveying porcelain roller (14) when the impeller (141) rotates.

8. The lithium battery kiln replacement chamber with an airflow circulation structure according to claim 1, characterized in that: The top of the lithium battery kiln replacement chamber shell (1) is provided with a protective shell covering the gas circulation component (2), and a cylinder for driving a sealing gate 1 (11), a sealing gate 2 (12) and a sealing gate 3 (13) is provided inside the protective shell.

9. The lithium battery kiln replacement chamber with an airflow circulation structure according to claim 8, characterized in that: A controller is provided in the protective shell, and the controller is respectively connected to the cylinders on the sealing gate 1 (11), the sealing gate 2 (12) and the sealing gate 3 (13). The controller is used to control the sealing gate 1 (11) and the sealing gate 3 (13) to rise when the sealing gate 2 (12) descends, and to control the sealing gate 1 (11) and the sealing gate 3 (13) to descend when the sealing gate 2 (12) rises.

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