Air nozzles and drying equipment

Abstract

This utility model relates to a nozzle and a drying device. The nozzle has an air cavity, an air inlet at its lower end, and an air outlet at its upper end. Both the air inlet and the air outlet are connected to the air cavity. The air cavity has a first air duct, a middle air duct, and a second air duct. The first air duct, the middle air duct, and the second air duct are arranged sequentially along a first direction, which is orthogonal to the vertical direction of the nozzle. From bottom to top, the ventilation area of ​​either the first air duct or the second air duct gradually decreases, while the ventilation area of ​​the middle air duct gradually increases. The nozzle structure of this utility model is reasonably designed, and eddies are not easily generated inside the nozzle, which is beneficial to improving the drying efficiency of the electrode sheets and reducing energy consumption.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, specifically to a nozzle and a drying device. Background Technology

[0002] In the lithium battery manufacturing process, the electrodes need to be dried after coating. During electrode drying, the nozzles of the drying equipment blow air (steam) towards the electrodes to dry their surface. In related technologies, due to unreasonable nozzle structure design, eddies are easily generated inside the nozzle, resulting in low electrode drying efficiency and high energy consumption. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of this utility model propose an air nozzle with a reasonable structural design. The air nozzle is not prone to generating eddies inside, which is beneficial to improving the drying efficiency of the electrode sheet and reducing energy consumption.

[0005] An embodiment of this utility model also proposes a drying device.

[0006] The nozzle of this utility model is provided with an air cavity. The lower end of the nozzle is provided with an air inlet and the upper end of the nozzle is provided with an air outlet. Both the air inlet and the air outlet are connected to the air cavity. The air cavity is provided with a first air duct, a middle air duct and a second air duct. The first air duct, the middle air duct and the second air duct are arranged sequentially along a first direction. The first direction is orthogonal to the vertical direction of the nozzle. In the vertical direction, the ventilation area of ​​either the first air duct or the second air duct gradually decreases, and the ventilation area of ​​the middle air duct gradually increases.

[0007] According to the embodiment of the present invention, the nozzle is provided with a first air duct, a middle air duct and a second air duct arranged sequentially along a first direction in the air cavity. In the direction from bottom to top, the ventilation area of ​​either the first air duct or the second air duct gradually decreases, while the ventilation area of ​​the middle air duct gradually increases. When steam enters the air cavity from the air inlet, the steam flow velocity in the first air duct and the second air duct can be increased, while the steam flow velocity in the middle air duct can be decreased. This can reduce the eddies generated when the steam flows in the air cavity, improve the steam utilization efficiency and heating efficiency, thereby improving the drying efficiency of the electrode and reducing energy consumption.

[0008] In some embodiments, the nozzle includes a housing and an isolator. The isolator is disposed inside the housing and together with the housing defines the first air duct, the intermediate air duct, and the second air duct. The isolator is arranged close to the air inlet and has a preset distance from the air outlet along the vertical direction.

[0009] In some embodiments, the housing includes a first side plate and a second side plate, and the isolation member includes a first isolation plate and a second isolation plate. The first side plate and the second side plate are arranged opposite to each other along the first direction, and the first isolation plate and the second isolation plate are arranged opposite to each other along the first direction. The first isolation plate and the first side plate form a first air duct, and the second isolation plate and the second side plate form a second air duct. The intermediate air duct is disposed between the first isolation plate and the second isolation plate. In the direction from bottom to top, the first isolation plate extends obliquely toward the first side plate, and the second isolation plate extends obliquely toward the second side plate.

[0010] In some embodiments, the nozzle further includes a baffle plate disposed within the air cavity and above the isolation member. The baffle plate is provided with a plurality of spaced-apart air distribution holes, and at least one of the first air duct, the intermediate air duct, and the second air duct communicates with the air distribution holes.

[0011] In some embodiments, the thickness direction of the baffle plate is parallel to the vertical direction, and the upper end of the isolation member is connected to the baffle plate.

[0012] In some embodiments, the air distribution hole includes a first side hole, a middle hole, and a second side hole. The middle hole is disposed between the first side hole and the second side hole along the first direction. In a projection plane orthogonal to the thickness direction of the baffle plate, the inner diameter of at least one of the first side hole and the second side hole gradually increases in the direction away from the middle hole.

[0013] In some embodiments, the first side hole and the second side hole are both trapezoidal holes, and / or the middle hole is a circular hole.

[0014] In some embodiments, the air nozzle further includes an air direction adjustment assembly, which includes an air vane and an adjustment knob. The air vane is rotatably mounted on the air outlet, and the adjustment knob is connected to the air vane. The adjustment knob is used to adjust the rotation angle of the air vane.

[0015] In some embodiments, there are two air outlets, which are arranged at intervals along the first direction, which is orthogonal to the vertical direction. There are two air direction adjustment components, which are respectively installed in the two air outlets.

[0016] In some embodiments, the air nozzle further includes a roller assembly, which includes a support frame and a roller body. The support frame is disposed within the air cavity, and the roller body is rotatably connected to the support frame. The roller surface of the roller body is higher than the air outlet.

[0017] In some embodiments, there are two air outlets, and the two air outlets are arranged at intervals along the first direction, the first direction being orthogonal to the vertical direction, and the roller body is disposed between the two air outlets;

[0018] In some embodiments, the roller body is adjustable in vertical position along the support frame.

[0019] Another embodiment of the drying device of the present invention includes: an oven and a nozzle, wherein the nozzle is the nozzle described in any one of the embodiments of the present invention, and the nozzle is connected to the oven.

[0020] According to the drying equipment of the present invention, since the air cavity is provided with a first air duct, a middle air duct and a second air duct arranged sequentially along a first direction, the ventilation area of ​​either the first air duct or the second air duct gradually decreases from bottom to top, while the ventilation area of ​​the middle air duct gradually increases. When steam enters the air cavity from the air inlet, the steam flow velocity in the first air duct and the second air duct can be increased, while the steam flow velocity in the middle air duct can be decreased. This can reduce the eddies generated when the steam flows in the air cavity, improve the steam utilization efficiency and heating efficiency, thereby improving the drying efficiency of the electrode sheets and reducing energy consumption. Attached Figure Description

[0021] Figure 1 This is a longitudinal cross-sectional view of the nozzle according to an embodiment of the present invention.

[0022] Figure 2 This is an internal schematic diagram of the nozzle according to an embodiment of the present invention.

[0023] Figure 3 This is a top view of the baffle plate of the nozzle according to an embodiment of the present utility model.

[0024] Figure 4 This is a partial schematic diagram of the nozzle according to an embodiment of the present utility model.

[0025] Figure label:

[0026] 1. Outer shell; 11. Air cavity; 111. First air duct; 112. Second air duct; 113. Middle air duct; 12. Air inlet; 13. Air outlet; 14. First side panel; 15. Second side panel;

[0027] 2. Isolation component; 21. First isolation plate; 22. Second isolation plate;

[0028] 3. Baffle plate; 31. Air distribution hole; 311. First side hole; 312. Second side hole; 313. Middle hole;

[0029] 4. Wind direction adjustment assembly; 41. Air vane; 42. Adjustment knob;

[0030] 5. Idler roller assembly; 51. Support frame; 52. Roller body;

[0031] 6. Fixture;

[0032] 7. Electrode. Detailed Implementation

[0033] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0034] The following is a reference appendix. Figures 1 to 4 This invention describes an embodiment of a nozzle and a drying device.

[0035] like Figures 1 to 4 As shown, the nozzle of this embodiment of the present invention has an air cavity 11, an air inlet 12 at the lower end of the nozzle, and an air outlet 13 at the upper end of the nozzle. Both the air inlet 12 and the air outlet 13 are connected to the air cavity 11. The air cavity 11 has a first air duct 111, a middle air duct 113, and a second air duct 112. The first air duct 111, the middle air duct 113, and the second air duct 112 are arranged along a first direction (e.g., ...). Figure 1 The air ducts are arranged sequentially in the left and right directions. The first direction is orthogonal to the up and down direction of the air nozzle. In the direction from bottom to top, the ventilation area (cross-sectional area) of either the first air duct 111 or the second air duct 112 gradually decreases, while the ventilation area (cross-sectional area) of the middle air duct 113 gradually increases.

[0036] According to the embodiment of the present invention, since the air cavity 11 is provided with a first air duct 111, a middle air duct 113 and a second air duct 112 arranged sequentially along a first direction, the ventilation area of ​​either the first air duct 111 or the second air duct 112 gradually decreases from bottom to top, while the ventilation area of ​​the middle air duct 113 gradually increases. When steam enters the air cavity 11 from the air inlet 12, the steam flow velocity in the first air duct 111 and the second air duct 112 can be increased, while the steam flow velocity in the middle air duct 113 can be decreased. This can reduce the eddies generated when the steam flows in the air cavity 11, improve the steam utilization efficiency and heating efficiency, thereby improving the drying efficiency of the electrode 7 and reducing energy consumption.

[0037] Understandably, according to Venturi's principle, when a fluid passes through a gradually narrowing cross-section, its velocity increases; conversely, when a fluid passes through a gradually increasing cross-section, its velocity decreases. Since the first air duct 111 and the second air duct 112 are located on either side of the intermediate air duct 113, and their cross-sections gradually decrease from bottom to top, the steam velocity on both sides of the air chamber 11 can be increased. Conversely, since the intermediate air duct 113 is located between the first air duct 111 and the second air duct 112, and its cross-section gradually increases from bottom to top, the steam velocity in the middle of the air chamber 11 can be decreased.

[0038] In other words, the steam velocity is high in the side region of the air cavity 11 and low in the middle region of the air cavity 11, which makes it less likely for eddies to be generated in the air cavity 11, that is, the effect of eddies is smaller, thereby improving steam utilization efficiency and heating efficiency.

[0039] Optionally, the nozzle includes a housing 1 and an isolator 2. The isolator 2 is disposed inside the housing 1. The isolator 2 and the housing 1 together define a first air duct 111, an intermediate air duct 113 and a second air duct 112. The isolator 2 is arranged close to the air inlet 12 and has a preset distance from the air outlet 13 in the vertical direction.

[0040] It is understandable that, such as Figure 1 and Figure 2 As shown, the isolator 2 is located in the lower region of the air cavity 11. The isolator 2 divides the lower region of the air cavity 11 into three parts (first air duct 111, second air duct 112, and second air duct 112). Since the isolator 2 is arranged close to the air inlet 12, the isolator 2 can guide the steam that has just entered the air cavity 11, so that the steam is discharged from the first air duct 111, the second air duct 112, and the second air duct 112 respectively. Since the isolator 2 has a preset distance from the air outlet 13 in the vertical direction, the steam discharged from the first air duct 111, the second air duct 112, and the second air duct 112 can be mixed again before being discharged from the air outlet 13, which helps to improve the uniformity of the steam discharged from the air outlet 13.

[0041] like Figure 2As shown, the outer casing 1 includes a first side plate 14 and a second side plate 15, and the isolation member 2 includes a first isolation plate 21 and a second isolation plate 22. The first side plate 14 and the second side plate 15 are arranged opposite to each other along a first direction, and the first isolation plate 21 and the second isolation plate 22 are also arranged opposite to each other along the first direction. The first isolation plate 21 and the first side plate 14 form a first air duct 111, and the second isolation plate 22 and the second side plate 15 form a second air duct 112. An intermediate air duct 113 is disposed between the first isolation plate 21 and the second isolation plate 22. In the direction from bottom to top, the first isolation plate 21 extends obliquely toward the first side plate 14, and the second isolation plate 22 extends obliquely toward the second side plate 15. This simplifies the structure of the isolation member 2 and facilitates its processing and manufacturing.

[0042] Optionally, such as Figure 1 and Figure 2 As shown, the nozzle also includes a baffle plate 3, which is disposed in the air cavity 11 and located above the isolation member 2. The baffle plate 3 is provided with a plurality of spaced air distribution holes 31, and at least one of the first air duct 111, the intermediate air duct 113 and the second air duct 112 is connected to the air distribution holes 31.

[0043] like Figure 1 and Figure 2 As shown, the first air duct 111, the intermediate air duct 113, and the second air duct 112 are connected to air distribution holes 31 at different locations. It can be understood that the airflow discharged from the first air duct 111, the intermediate air duct 113, and the second air duct 112 can be evenly distributed through multiple air distribution holes 31 to make the airflow velocity discharged from the air outlet 13 more uniform.

[0044] like Figure 1 and Figure 2 As shown, the thickness direction of the baffle plate 3 is parallel to the vertical direction, and the upper end of the separator 2 is connected to the baffle plate 3. It can be understood that both the upper and lower end faces of the baffle plate 3 are parallel to the horizontal plane. Because the upper end of the separator 2 is connected to the baffle plate 3, steam from different air ducts can be collected after passing through the baffle plate 3. This allows the steam flowing upwards through the baffle plate 3 to be more uniform, increasing steam utilization and reducing steam loss.

[0045] Optionally, such as Figure 2 and Figure 3As shown, the air distribution hole 31 includes a first side hole 311, a central hole 313, and a second side hole 312. The central hole 313 is disposed between the first side hole 311 and the second side hole 312 along a first direction. In the projection plane orthogonal to the thickness direction of the baffle plate 3, the inner diameter of at least one of the first side hole 311 and the second side hole 312 gradually increases in the direction away from the central hole 313. Since the inner diameter of at least one of the first side hole 311 and the second side hole 312 gradually increases in the direction away from the central hole 313, the steam velocity and flow rate on the left and right sides of the air chamber 11 can be greater than the steam velocity and flow rate at the center, which is beneficial to improving the steam utilization rate and reducing the steam flow resistance.

[0046] For example, the inner diameter of the first side hole 311 and the inner diameter of the second side hole 312 both gradually increase in the direction away from the middle hole 313.

[0047] For example, the first side hole 311 and the second side hole 312 are both trapezoidal holes, and the middle hole 313 is a round hole. Figure 3 As shown, the shorter side of the two parallel sides of the trapezoidal hole is arranged closer to the middle hole 313, and the longer side of the two parallel sides of the trapezoidal hole is arranged further away from the middle hole 313.

[0048] like Figure 3 As shown, there are multiple first side holes 311, second side holes 312 and intermediate holes 313. Multiple first side holes 311 are arranged at intervals along the length direction of the baffle plate 3, multiple second side holes 312 are arranged at intervals along the length direction of the baffle plate 3, and multiple intermediate holes 313 are arranged at intervals along the length direction and the width direction of the baffle plate 3.

[0049] Optionally, such as Figure 1 and Figure 4 As shown, the air nozzle also includes an airflow direction adjustment component 4, which includes an air vane 41 and an adjustment knob 42. The air vane 41 is rotatably mounted on the air outlet 13, and the adjustment knob 42 is connected to the air vane 41. The adjustment knob 42 is used to adjust the rotation angle of the air vane 41. It can be understood that the adjustment knob 42 changes the airflow direction of the air outlet 13 by adjusting the rotation angle of the air vane 41, thereby improving the airflow effect of the air nozzle and expanding its applicability.

[0050] like Figure 1 and Figure 2 As shown, there are two air outlets 13, arranged at intervals along a first direction, which is orthogonal to the vertical direction. There are two airflow direction adjustment components 4, each installed within one of the two air outlets 13. Figure 2As shown, during the drying process, the electrode 7 moves in the left-right direction. Since the two air outlets 13 are arranged at intervals in the left-right direction, the drying efficiency of the electrode 7 can be improved. In addition, the air outlets 13 can be adjusted in airflow direction by different airflow adjustment components 4 to further improve the airflow effect of the nozzles.

[0051] Optionally, such as Figure 1 and Figure 2 As shown, the air nozzle also includes a roller assembly 5, which includes a support frame 51 and a roller body 52. ​​The support frame 51 is located inside the air cavity 11, and the roller body 52 is rotatably connected to the support frame 51. The roller surface of the roller body 52 is higher than the air outlet 13. Since the roller body 52 can rotate relative to the support frame 51, the roller body 52 can support the electrode 7 to improve the stability of the electrode 7 during movement. Furthermore, the roller body 52 can adjust the flatness of the electrode 7 without affecting its drying process.

[0052] For example, the roller 52 can be rotated by a motor.

[0053] Optionally, such as Figure 1 and Figure 2 As shown, there are two air outlets 13, which are arranged at intervals along a first direction orthogonal to the vertical direction. The roller body 52 is located between the two air outlets 13. Since the roller body 52 is located between the two air outlets 13, the electrode 7 can be supported at the middle position of the two air outlets 13 to ensure the stability of the electrode 7 when it moves.

[0054] For example, the roller 52 is adjustable in vertical position along the support frame 51, thereby adjusting the height of the roller 52 according to actual production needs.

[0055] In other examples, the roller 52 is a fixed roller 52, that is, the height of the roller 52 is not adjustable.

[0056] Another embodiment of the drying device of this utility model includes: a drying oven and an air nozzle, wherein the air nozzle is the air nozzle of this utility model, and the air nozzle is connected to the drying oven. Figure 1 and Figure 2 As shown, a fixing frame 6 is provided on the lower end face of the outer shell 1. The fixing frame 6 is arranged circumferentially around the air inlet 12 and is detachably connected to the oven.

[0057] According to the drying equipment of the present invention, since the air cavity 11 is provided with a first air duct 111, an intermediate air duct 113 and a second air duct 112 arranged sequentially along a first direction, the ventilation area of ​​either the first air duct 111 or the second air duct 112 gradually decreases from bottom to top, while the ventilation area of ​​the intermediate air duct 113 gradually increases. When steam enters the air cavity 11 from the air inlet 12, the steam flow rate in the first air duct 111 and the second air duct 112 can be increased, while the steam flow rate in the intermediate air duct 113 can be decreased. This can reduce the eddies generated when the steam flows in the air cavity 11, improve the steam utilization efficiency and heating efficiency, thereby improving the drying efficiency of the electrode 7 and reducing energy consumption.

[0058] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0059] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0060] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0061] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0062] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0063] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A blow nozzle characterized by, The nozzle has an air cavity, an air inlet at its lower end, and an air outlet at its upper end. Both the air inlet and the air outlet are connected to the air cavity. The air cavity has a first air duct, a middle air duct, and a second air duct. The first air duct, the middle air duct, and the second air duct are arranged sequentially along a first direction, which is orthogonal to the vertical direction of the nozzle. From bottom to top, the ventilation area of ​​either the first air duct or the second air duct gradually decreases, while the ventilation area of ​​the middle air duct gradually increases.

2. A tuyere according to claim 1, characterised in that The air nozzle includes a housing and an isolator. The isolator is disposed inside the housing. The isolator and the housing together define the first air duct, the intermediate air duct and the second air duct. The isolator is arranged close to the air inlet and has a preset distance from the air outlet along the vertical direction.

3. A tuyere according to claim 2, characterised in that The outer casing includes a first side plate and a second side plate, and the isolation member includes a first isolation plate and a second isolation plate. The first side plate and the second side plate are arranged opposite to each other along the first direction, and the first isolation plate and the second isolation plate are arranged opposite to each other along the first direction. The first isolation plate and the first side plate form a first air duct, and the second isolation plate and the second side plate form a second air duct. The intermediate air duct is disposed between the first isolation plate and the second isolation plate. In the direction from bottom to top, the first isolation plate extends obliquely toward the first side plate, and the second isolation plate extends obliquely toward the second side plate.

4. A windbox according to claim 2, characterised in that The air nozzle also includes a baffle plate, which is disposed inside the air cavity and located above the isolation member. The baffle plate is provided with a plurality of spaced air distribution holes, and at least one of the first air duct, the intermediate air duct and the second air duct communicates with the air distribution holes.

5. A windbox according to claim 4, characterised in that The air distribution hole includes a first side hole, a middle hole, and a second side hole. The middle hole is disposed between the first side hole and the second side hole along the first direction. In a projection plane orthogonal to the thickness direction of the baffle plate, the inner diameter of at least one of the first side hole and the second side hole gradually increases in the direction away from the middle hole.

6. The nozzle according to any one of claims 1-5, characterized in that, The air nozzle also includes an air direction adjustment component, which includes an air vane and an adjustment knob. The air vane is rotatably mounted on the air outlet, and the adjustment knob is connected to the air vane. The adjustment knob is used to adjust the rotation angle of the air vane.

7. A windbox according to claim 6, characterised in that There are two air outlets, which are arranged at intervals along the first direction, which is orthogonal to the vertical direction. There are two air direction adjustment components, which are respectively installed in the two air outlets.

8. A tuyere according to any one of claims 1 to 5, characterised in that The air nozzle also includes a roller assembly, which includes a support frame and a roller body. The support frame is disposed in the air cavity, and the roller body is rotatably connected to the support frame. The roller surface of the roller body is higher than the air outlet.

9. A windbox according to claim 8, characterised in that There are two air outlets, and the two air outlets are arranged at intervals along the first direction, which is orthogonal to the vertical direction. The roller body is disposed between the two air outlets. And / or, the roller body is adjustable in vertical position along the support frame.

10. A drying apparatus, characterized by, include: Oven; The air nozzle is the air nozzle according to any one of claims 1-9, and the air nozzle is connected to the oven.

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