Integrated tuyere and coating machine drying oven
By designing an integrated air nozzle and a coating machine oven, using inclined plates and uniform air mesh plates to optimize hot air circulation, combined with graphene heating plates, the problems of low drying efficiency and high power consumption in the existing technology are solved, and efficient and uniform pole drying and production stability are achieved.
Patent Information
- Application Number
- CN202422068034.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-26
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-08-26
AI Technical Summary
The drying efficiency of the existing double-layer coating machine oven is high but has a large power consumption, and it is difficult to control the uniformity of the supply air, resulting in poor uniformity of the coating thickness and easy to break the belt, affecting production continuity.
An integrated air nozzle structure is designed, including the air inlet passage and the air outlet passage, and an inclined plate is used to form the air inlet gap, combining the air uniform mesh plate and the graphene heating plate to optimize the hot air circulation path and uniformity and improve drying efficiency.
It improves the circulation efficiency and uniformity of hot air, enhances the drying effect of the pole sheet, reduces energy consumption, reduces the risk of belt breakage, and ensures the stability of production.
Smart Images
Figure CN223083200U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of coating equipment, in particular to an integrated air nozzle and a coating machine oven. Background Art
[0002] In the process of manufacturing the electrode sheet of a lithium battery, the wet slurry of the lithium battery is evenly coated on a copper foil or an aluminum foil, and after drying, an electrode sheet meeting the requirements is manufactured.
[0003] In the prior art, the mainstream design of drying in a double-layer coating machine oven adopts a structure of hot air + blowing against each other with upper and lower air nozzles. The electrode sheet is in a suspended state in the oven, and a supporting roller is provided at intervals. This method has high drying efficiency and excellent drying effect, but the power consumption of the circulation fan is large, and the control of air supply uniformity is strict. Otherwise, the coating thickness uniformity is poor, and the difficulty of the foil material running is increased, and the tape is easily broken, resulting in shutdown. Summary of the Utility Model
[0004] Based on this, it is necessary to provide an integrated air nozzle and a coating machine oven for the problems in the prior art.
[0005] An integrated air nozzle, characterized in that it includes a first side plate and a second side plate. A first opening and a second opening are formed between the first side plate and the second side plate. An intermediate plate is provided between the first side plate and the second side plate. The intermediate plate is arranged on one side of the first side plate and the second side plate, dividing the second opening into an air inlet channel and an air outlet channel. The first opening faces the side of the electrode sheet to be dried.
[0006] In one embodiment, the air inlet channel is provided with a plurality of inclined plates, and an air inlet gap is formed between adjacent inclined plates. The air inlet channel is communicated with the first opening through the air inlet gap.
[0007] In one embodiment, the air inlet gap is inclined, and the air inlet gap is inclined towards the air outlet channel.
[0008] In one embodiment, the inclined plates include a first inclined plate, a second inclined plate, a third inclined plate, and a fourth inclined plate. The first inclined plate and the fourth inclined plate are respectively fixed to the first side plate and the intermediate plate. The second inclined plate and the third inclined plate are fixed. A first air inlet gap is formed between the first inclined plate and the second inclined plate, and a second air inlet gap is formed between the third inclined plate and the fourth inclined plate.
[0009] In one embodiment, the straight line where the outer ends of the first inclined plate, the second inclined plate, the third inclined plate, and the fourth inclined plate are located is inclined, and the included angle with the horizontal direction is 10° - 30°.
[0010] In one embodiment, the integrated air nozzle includes an upper top plate which is located on one side of the second opening. The upper top plate is fixed to the first side plate and the second side plate, and the upper top plate is provided with an air inlet hole and an air outlet hole which are communicated with the air inlet channel and the air outlet channel.
[0011] In one embodiment, the air inlet channel is provided with an air distribution grid plate which is located between the air inlet hole and the inclined plate, and the air distribution grid plate is provided with a plurality of through holes.
[0012] A coating machine oven adopts the above integrated air nozzle.
[0013] In one embodiment, the oven further includes an upper air inlet chamber, an upper air return chamber and a middle air return chamber. The middle air return chamber is located below the upper air inlet chamber and the upper air return chamber. There is an upper transmission roller between the middle air return chamber and the upper air inlet chamber and the upper air return chamber. The electrode sheet to be dried moves from above the upper transmission roller, and the middle air return chamber is provided with an air return hole.
[0014] In one embodiment, the oven further includes a graphene heating plate which is located at the side position of the upper transmission roller and is used for drying the lower side of the electrode sheet to be dried moving above the upper transmission roller.
[0015] For the above integrated air nozzle and coating machine oven, the air inlet channel and the air outlet channel are made into an integrated structure, which can greatly improve the space utilization rate. At this time, the air inlet channel and the air outlet channel form a similar independent sealing structure with the electrode sheet. The hot air flow path is from the air inlet channel to the air outlet channel, the circulation efficiency is improved, and the circulation uniformity is also greatly improved, thereby improving the drying effect of the electrode sheet. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic structural diagram of a cross-section of the integrated air nozzle of the present utility model;
[0017] Figure 2 It is a schematic structural diagram of the production line where the coating machine oven of the present utility model is located;
[0018] Figure 3 For Figure 2 the enlarged view at A in
[0019] Figure 4 It is a schematic structural diagram of a cross-section of the coating machine oven of the present utility model;
[0020] Figure 5 It is a schematic structural diagram of a cross-section of the coating machine oven of the present utility model.
[0021] Among them, 1. First side plate; 2. Second side plate; 3. First opening; 4. Second opening; 41. Air inlet channel; 42. Air outlet channel; 5. Middle plate; 6. Inclined plate; 60. Air inlet gap; 61. First inclined plate; 62. Second inclined plate; 63. Third inclined plate; 64. Fourth inclined plate; 7. Upper top plate; 71. Air inlet hole; 72. Air outlet hole; 8. Air distribution grid plate;
[0022] 100. Upper air inlet chamber; 200. Upper air return chamber; 300. Middle air return chamber; 400. Upper driving roller; 310. Air return hole; 500. Graphene heating plate. Detailed implementation manners
[0023] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will describe the detailed implementation manners of the present utility model in conjunction with the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.
[0024] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. On the contrary, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.
[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used herein in the specification of the present utility model are only for the purpose of describing specific implementation manners and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.
[0026] As Figure 1 and Figure 3 shown, an integrated air nozzle, characterized in that it includes a first side plate 1 and a second side plate 2. A first opening 3 and a second opening 4 are formed between the first side plate 1 and the second side plate 2. A middle plate 5 is provided between the first side plate 1 and the second side plate 2. The middle plate 5 is disposed on one side of the first side plate 1 and the second side plate 2, dividing the second opening 4 into an air inlet channel 41 and an air outlet channel 42. The first opening 3 faces the side of the electrode plate to be dried.
[0027] The air inlet channel 41 and the air outlet channel 42 are made into an integrated structure, which can greatly improve the space utilization rate. At this time, the air inlet channel 41 and the air outlet channel 42 form a similar independent sealing structure with the pole piece. The hot air flow path is from the air inlet channel 41 to the air outlet channel 42, the circulation efficiency is improved, and the circulation uniformity is also greatly improved, thereby improving the drying effect of the pole piece.
[0028] At this time, the middle plate 5 is arranged at one end far from the pole piece. In this way, the air inlet channel 41 and the air outlet channel 42 form a wind collecting box on the side close to the pole piece. The hot air entering from the air inlet channel 41 enters the wind collecting box and then blows on the surface of the pole piece. Then, under the action of the pole piece, the wind direction changes towards the air outlet channel 42, thus completing the drying of the pole piece.
[0029] In order to improve the drying efficiency of the hot air entering through the air inlet channel acting on the pole piece, in this embodiment, the air inlet channel 41 is provided with a plurality of inclined plates 6, and an air inlet gap 60 is formed between adjacent inclined plates 6. The air inlet channel 41 communicates with the first opening 3 through the air inlet gap 60. At this time, the inclined plates 6 are inclined, and the inclined plates 6 form a slit. Specifically, a channel is formed between two adjacent inclined plates 6. At this time, the distance between the two inclined plates 6 is greater on the side close to the air inlet channel 41 than on the side close to the pole piece, that is, the two inclined plates 6 gradually approach on the side close to the pole piece, so as to form a gradually decreasing air inlet gap 60 between the two inclined plates 6, and further form a slit at the end of the two inclined plates 6. At this time, the air inlet gap 60 is a slit, so that the hot air speed is relatively high at the position of the air inlet gap 60, and then a high-speed air flow is formed, which has the effect of increasing the drying rate when hitting the surface of the pole piece.
[0030] At this time, since the air inlet channel 41 and the air outlet channel 42 are arranged adjacent to each other, therefore, the hot air blown out from the air inlet gap 60 needs to flow towards the air outlet channel 42 after passing through the pole piece. Therefore, in this embodiment, the air inlet gap 60 is inclined, and the air inlet gap 60 is inclined towards the air outlet channel 42. In this way, the hot air entering from the position of the air inlet gap 60 enters in an inclined direction. After blowing on the pole piece and drying the pole piece, it can quickly flow out towards the air outlet channel 42, thus completing the drying and improving the drying efficiency.
[0031] In one embodiment, regarding the specific setting of the inclined plate 6, at this time, the inclined plate 6 includes a first inclined plate 61, a second inclined plate 62, a third inclined plate 63, and a fourth inclined plate 64. The first inclined plate 61 and the fourth inclined plate 64 are respectively fixed to the first side plate 1 and the middle plate 5. The second inclined plate 62 is fixed to the third inclined plate 63. A first air inlet gap 60 is formed between the first inclined plate 61 and the second inclined plate 62, and a second air inlet gap 60 is formed between the third inclined plate 63 and the fourth inclined plate 64. There are 4 inclined plates 6, which can form two air inlet gaps 60. In this way, while ensuring the air volume of each air inlet gap 60, the outflow speed of the hot air can be increased to a certain extent, thereby improving the drying efficiency.
[0032] At this time, in order to improve the drying efficiency, in this embodiment, the straight lines where the outer ends of the first inclined plate 61, the second inclined plate 62, the third inclined plate 63, and the fourth inclined plate 64 are located are inclined, and the included angle with the horizontal direction is 10° - 30°. Specifically, at this time, the first inclined plate 61, the second inclined plate 62, the third inclined plate 63, and the fourth inclined plate 64 are inclined, and the ends of the first inclined plate 61, the second inclined plate 62, the third inclined plate 63, and the fourth inclined plate 64 (near the pole piece side) are on a straight line, and the included angle with the horizontal direction is 20° ( Figure 3 as shown in), which can prevent the hot air and the air entering the air outlet channel 42 after drying from forming eddy currents and affecting the normal drying process.
[0033] Regarding the air nozzle, it is necessary to form a hot air inlet and an air outlet channel 42. Therefore, in this embodiment, the integrated air nozzle includes an upper top plate 7. The upper top plate 7 is located at a position on one side of the second opening 4. The upper top plate 7 is fixed to the first side plate 1 and the second side plate 2. The upper top plate 7 is provided with an air inlet hole 71 and an air outlet hole 72 that communicate with the air inlet channel 41 and the air outlet channel 42. At this time, two end plates are respectively arranged at both ends of the first side plate 1 and the second side plate 2 to form an overall air nozzle structure. At the same time, an upper top plate 7 is arranged on the upper side of the first side plate 1 and the second side plate 2. The upper top plate 7 is provided with an air inlet hole 71 and an air outlet hole 72, which communicate with the air inlet channel 41 and the air outlet channel 42 respectively. In this way, two independent communication positions are formed at the position of the upper top plate 7, which are respectively communicated with the oven air inlet chamber and the return air chamber.
[0034] At the position of the air inlet channel 41, in order to ensure the uniformity of the hot air and make the pole piece drying process more stable, in this embodiment, the air inlet channel 41 is provided with an air distribution mesh plate 8. The air distribution mesh plate 8 is located between the air inlet hole 71 and the inclined plate 6. The air distribution mesh plate 8 is provided with a number of through holes. At this time, the air distribution mesh plate 8 is evenly provided with a number of through holes, so that the hot air entering from the air inlet hole 71 will first pass through the air distribution mesh plate 8, making the hot air more uniform.
[0035] In another embodiment of the present utility model, there is provided a coating machine oven, as Figures 2 to 5 shown, which adopts the above-mentioned integrated air nozzle. Specifically, the oven further includes an upper air inlet chamber 100, an upper air return chamber 200 and a middle air return chamber 300. The middle air return chamber 300 is located below the upper air inlet chamber 100 and the upper air return chamber 200. A upper transmission roller 400 is provided between the middle air return chamber 300 and the upper air inlet chamber 100 and the upper air return chamber 200. The electrode sheet to be dried moves from the upper side of the upper transmission roller 400. The middle air return chamber 300 is provided with air return holes 310. At this time, the upper air inlet chamber 100 is communicated with the air inlet hole 71 of the integrated air nozzle, and the upper air return chamber 200 is communicated with the air outlet hole 72 of the integrated air nozzle, so as to realize air inlet and air return at the position of the integrated air nozzle, and thus realize the drying of the electrode sheet. At the same time, a middle air return chamber 300 is further provided on the other side of the electrode sheet. The air return holes 310 on one side of the middle air return chamber 300 are arranged opposite to the other side of the electrode sheet, so that the stable operation of the electrode sheet can be ensured.
[0036] At the same time, in order to improve the drying efficiency on the other side of the electrode sheet, in this embodiment, the oven further includes a graphene heating plate 500. The graphene heating plate 500 is located at the side position of the upper transmission roller 400 and is used for drying the lower side of the electrode sheet to be dried moving from the upper side of the upper transmission roller 400. The graphene heating plate 500 has the characteristics of fast heating up, strong penetration, energy saving and not relying on hot air, etc., and can quickly heat the electrode sheet, thereby improving the drying efficiency of the oven.
[0037] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.
[0038] The above-described embodiments only represent several implementation manners of the present utility model, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.
Claims
1. An integrated air nozzle, characterized in that, It includes a first side plate and a second side plate. A first opening and a second opening are formed between the first side plate and the second side plate. An intermediate plate is provided between the first side plate and the second side plate. The intermediate plate is arranged on one side of the first side plate and the second side plate, dividing the second opening into an air inlet channel and an air outlet channel. The first opening faces the side of the pole piece to be dried.
2. The integrated nozzle according to claim 1, wherein, A plurality of inclined plates are provided in the air inlet channel. An air inlet gap is formed between adjacent inclined plates. The air inlet channel is communicated with the first opening through the air inlet gap.
3. The integrated nozzle according to claim 2, characterized in that, The air inlet gap is inclined. The air inlet gap is inclined towards the air outlet channel.
4. The integrated nozzle according to claim 2 or 3, characterized in that, The inclined plates include a first inclined plate, a second inclined plate, a third inclined plate, and a fourth inclined plate. The first inclined plate and the fourth inclined plate are respectively fixed to the first side plate and the intermediate plate. The second inclined plate is fixed to the third inclined plate. A first air inlet gap is formed between the first inclined plate and the second inclined plate. A second air inlet gap is formed between the third inclined plate and the fourth inclined plate.
5. The integrated air nozzle according to claim 4, wherein, The straight line where the outer ends of the first inclined plate, the second inclined plate, the third inclined plate, and the fourth inclined plate are located is inclined, and the included angle with the horizontal direction is 10° - 30°.
6. The integrated air nozzle according to claim 5, characterized in that, The integrated air nozzle includes an upper top plate. The upper top plate is located on one side of the second opening. The upper top plate is fixed to the first side plate and the second side plate. The upper top plate is provided with an air inlet hole and an air outlet hole communicated with the air inlet channel and the air outlet channel.
7. The integrated nozzle according to claim 6, characterized in that, An air distribution grid plate is provided in the air inlet channel. The air distribution grid plate is located between the air inlet hole and the inclined plates. The air distribution grid plate is provided with a number of through holes.
8. A coating machine oven, characterized in that, The integrated air nozzle according to any one of claims 1 - 7 is adopted.
9. The coating machine oven according to claim 8, characterized in that, The oven further includes an upper air inlet chamber, an upper air return chamber, and a middle air return chamber. The middle air return chamber is located below the upper air inlet chamber and the upper air return chamber. A transmission roller is provided between the middle air return chamber and the upper air inlet chamber and the upper air return chamber. The pole piece to be dried moves from above the transmission roller. The middle air return chamber is provided with an air return hole.
10. The coating machine oven according to claim 9, characterized in that, The oven further includes a graphene heating plate. The graphene heating plate is located on the side of the transmission roller and is used for drying the lower side of the pole piece to be dried moving above the transmission roller.