Lower tuyere structure and drying oven

Abstract

The utility model belongs to the technical field of drying ovens, and particularly relates to a lower tuyere structure which comprises a tuyere body and a tuyere cover, the tuyere body comprises an air inlet end and an air outlet end, the air outlet end is used for facing a pole piece, an air inlet is formed in the air inlet end, two air outlets are formed in the air outlet end, and the two air outlets are located on the upstream and the downstream of the pole piece belt conveying direction respectively; the guide plate is mounted on the outer side of the tuyere body; the air uniformizing plate is mounted in the tuyere body, and the mounting position of the air uniformizing plate corresponds to the position above the air inlet; wherein the flow guide plate is positioned on one side of the tuyere body downstream along the pole piece belt running direction; the air nozzle has the beneficial effects that the flow guide plate is arranged on the air nozzle body to play a downward flow guide role on hot air flowing out from the air outlet, so that the acting force of a lower wind field on a pole piece is reduced, the upper wind field and the lower wind field of the pole piece can be kept consistent, the pole piece is prevented from shaking, and lithium precipitation caused by shaking marks is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of ovens, and particularly relates to a lower air nozzle structure and an oven. Background Art

[0002] In the production process of battery electrodes, electrode coating is a very important link. After coating, the electrodes usually need to be dried using an oven. Multiple upper air nozzles and lower air nozzles are arranged inside the hull of the oven. The coated electrodes pass through between the upper and lower air nozzles of the oven, and the upper and lower air nozzles blow air on both sides of the electrodes for drying respectively.

[0003] In the prior art, due to the inconsistent air fields generated by the upper air nozzles and lower air nozzles inside the hulls of most ovens, the lower air field is usually larger than the upper air field, resulting in the electrodes shaking when passing through the oven, and the electrodes generating shake marks leading to lithium deposition, thus easily causing lithium ions to fail to be normally embedded in the negative electrode, affecting the battery performance. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a lower air nozzle structure and an oven for solving the above technical problems in view of the above existing technical problems.

[0005] In view of this, the utility model provides a lower air nozzle structure, including:

[0006] An air nozzle body, the air nozzle body includes an air inlet end and an air outlet end. The air outlet end is the end for facing the electrode. An air inlet is provided on the air inlet end, and two air outlets are provided on the air outlet end. The two air outlets are respectively located upstream and downstream of the electrode running direction.

[0007] A guide vane, the guide vane is installed outside the air nozzle body;

[0008] An air equalizing plate, the air equalizing plate is installed inside the air nozzle body, and its installation position corresponds to above the air inlet;

[0009] Wherein, the guide vane is located on one side of the air nozzle body along the downstream of the electrode running direction.

[0010] Further, it further includes:

[0011] A wind guiding plate, the wind guiding plate is arranged inside the air nozzle body;

[0012] Wherein, the wind guiding plate includes two arc-shaped guiding surfaces, the air nozzle body includes two inclined guiding surfaces, and an air outlet is formed between the arc-shaped guiding surface and the inclined guiding surface.

[0013] Further, the air equalizing plate includes:

[0014] A plate body, the plate body is installed inside the air nozzle body, and its installation position corresponds to above the air inlet;

[0015] A plurality of air distribution holes are arranged on the plate body in a linear array.

[0016] Furthermore, the plate body is detachably installed inside the air nozzle body.

[0017] Furthermore, the air distribution hole is any one of a circular hole, a square hole or a kidney-shaped hole.

[0018] Furthermore, the flow guide plate is detachably installed on the air nozzle body.

[0019] Furthermore, a flow guide structure that is bent downward and obliquely is provided at one end of the flow guide plate away from the air nozzle body.

[0020] Furthermore, the angle at which the flow guide structure is bent downward and obliquely is α, and α is 30° - 60°.

[0021] Furthermore, the number of air inlets is several, and an air distribution plate is correspondingly provided above each air inlet.

[0022] An oven includes the lower air nozzle structure of any one of the above.

[0023] The beneficial effects of the present utility model are as follows:

[0024] By providing a flow guide plate on the air nozzle body to play a role in downwardly guiding the hot air flowing out from the air outlet, the acting force of the lower air field on the electrode sheet is reduced, so that the upper and lower air fields of the electrode sheet can be kept consistent, thereby preventing the electrode sheet from shaking and avoiding the generation of shaking marks leading to lithium deposition. Description of the Drawings

[0025] Figure 1 is a schematic diagram of the overall structure of the lower air nozzle of the present utility model;

[0026] Figure 2 is a schematic diagram of the internal structure of the lower air nozzle of the present utility model;

[0027] Figure 3 is a schematic diagram of the air outlet flow direction of the lower air nozzle of the present utility model;

[0028] Figure 4 is a schematic diagram of the internal structure of the oven of the present utility model;

[0029] The marks in the figure are shown as:

[0030] 1. Air nozzle body; 11. Air inlet; 12. Air outlet; 13. Inclined flow guide surface; 2. Flow guide plate; 21. Flow guide structure; 3. Air distribution plate; 31. Air distribution hole; 4. Air guide plate; 41. Arc-shaped flow guide surface. Detailed Embodiments

[0031] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.

[0032] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments of the present application. For the convenience of description, the dimensions of each part shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0033] Embodiment 1:

[0034] This embodiment provides a lower air nozzle structure, including:

[0035] An air nozzle body 1, the air nozzle body 1 includes an air inlet end and an air outlet end, the air outlet end is the end for facing the electrode sheet, an air inlet 11 is provided on the air inlet end, and two air outlets 12 are provided on the air outlet end, and the two air outlets 12 are respectively located upstream and downstream of the electrode sheet running direction;

[0036] A flow guide plate 2, the flow guide plate 2 is installed outside the air nozzle body 1;

[0037] An air equalizing plate 3, the air equalizing plate 3 is installed inside the air nozzle body 1, and its installation position corresponds to the upper part of the air inlet 11;

[0038] Among them, the flow guide plate 2 is located on one side of the air nozzle body 1 downstream along the electrode sheet running direction.

[0039] In this technical solution, the electrode sheet passes through the inside of the oven, and the hot air generated in the oven is blown out through the upper and lower air nozzles to blow the upper and lower film surfaces of the electrode sheet respectively, so as to achieve a drying effect on the electrode sheet. The lower air nozzle is composed of an air nozzle body 1, a flow guide plate 2, and an air equalizing plate 3. The air nozzle body 1, the flow guide plate 2, and the air equalizing plate 3 are all made of stainless steel materials with heat resistance and relatively high structural strength. The upper air nozzle can be designed to have the same structure as the lower air nozzle but without the flow guide plate 2, or can be designed as a conventional air nozzle structure in the prior art, which is not limited in this application.

[0040] As Figure 3 shown, when the lower air nozzle works, the hot air generated by the oven enters the inside of the air nozzle body 1 through the air inlet 11 of the air nozzle body 1, and then is discharged through the two air outlets 12. The hot air discharged from the two air outlets 12 will flow along the arrow direction, blow the pole piece upward from below the pole piece to dry the pole piece, and then the hot air is guided by the flow guide plate 2 to flow downward of the pole piece, reducing the upward wind force exerted on the pole piece by the hot air, thereby preventing the pole piece from shaking when running in the oven.

[0041] The air inlet 11 is located at the bottom of the air nozzle body 1. An air distribution plate 3 is arranged inside the air nozzle body 1, and the air distribution plate 3 is correspondingly installed above the air inlet 11. The hot air entering the air nozzle body 1 from the air inlet 11 needs to pass through the air distribution plate 3 before being discharged from the two air outlets 12. By setting the air distribution plate 3 to adjust the diversion of the hot air in the air nozzle body 1 and then evenly discharging it from the air outlets 12, it can improve the air flow distribution of the hot air to a certain extent and also reduce the noise generated by uneven air flow when the hot air flows through the air nozzle body 1.

[0042] In summary, by setting the flow guide plate 2 on the air nozzle body 1 to play a downward diversion role for the hot air flowing out of the air outlet 12, reducing the acting force of the lower air field on the pole piece, enabling the upper and lower air fields of the pole piece to be consistent, thereby preventing the pole piece from shaking and avoiding the generation of shaking marks leading to lithium deposition.

[0043] Embodiment 2:

[0044] This embodiment provides a lower air nozzle structure, which has the following technical features in addition to including the technical solutions of the above embodiment.

[0045] Furthermore, it further includes:

[0046] A wind guide plate 4, and the wind guide plate 4 is arranged inside the air nozzle body 1;

[0047] Among them, the wind guide plate 4 includes two arc-shaped diversion surfaces 41, and the air nozzle body 1 includes two inclined diversion surfaces 13. An air outlet 12 is formed between the arc-shaped diversion surface 41 and the inclined diversion surface 13.

[0048] In this technical solution, as Figure 2 shown, the wind guide plate 4 is installed inside the air nozzle body 1 and is located at the air outlet end. The two arc-shaped diversion surfaces 41 are arranged on both sides of the wind guide plate 4. There are two inclined diversion surfaces 13 inside the air nozzle body 1. The two arc-shaped diversion surfaces 41 and the two inclined diversion surfaces 13 are respectively arranged in one-to-one correspondence, and two air outlets 12 are formed between the arc-shaped diversion surface 41 and the inclined diversion surface 13. Through this structural design, it plays a guiding role for the hot air flowing out of the inside of the air nozzle body 1, reducing the upward wind force exerted on the pole piece by the hot air, thereby preventing the pole piece from shaking when running in the oven.

[0049] Example 3:

[0050] This embodiment provides a lower air nozzle structure, which has the following technical features in addition to the technical solutions of the above embodiments.

[0051] Furthermore, the air distribution plate 3 includes:

[0052] A plate body, which is installed in the air nozzle body 1, and its installation position corresponds to the upper part of the air inlet 11;

[0053] A plurality of air distribution holes 31, which are arranged in a linear array on the plate body.

[0054] Furthermore, the plate body is detachably installed in the air nozzle body 1.

[0055] In this technical solution, the plate body is detachably installed and fixed in the air nozzle body 1 by setting fasteners and is located above the air inlet 11, which facilitates the disassembly, installation and maintenance of the air distribution plate 3. The hot air generated by the oven enters the inside of the air nozzle body 1 through each air distribution hole 31, and the air distribution holes 31 are used to improve the air flow distribution of the hot air, so that the hot air flow is evenly distributed through the air inlet 11.

[0056] Furthermore, the air distribution hole 31 is any one of a round hole, a square hole or an oval hole. There is no limitation on the shape of the air distribution hole 31, as long as the shape and size of each air distribution hole 31 are kept consistent.

[0057] Example 4:

[0058] This embodiment provides a lower air nozzle structure, which has the following technical features in addition to the technical solutions of the above embodiments.

[0059] Furthermore, the flow guide plate 2 is detachably installed on the air nozzle body 1.

[0060] Furthermore, the flow guide plate 2 is installed on the air nozzle body 1 by setting fasteners.

[0061] In this technical solution, the flow guide plate 2 and the air nozzle body 1 are connected and fixed by setting a plurality of fasteners. While ensuring the stable connection between the flow guide plate 2 and the air nozzle body 1, it is also convenient for the staff to disassemble and maintain the flow guide plate 2, and the practicability is high.

[0062] Example 5:

[0063] This embodiment provides a lower air nozzle structure, which has the following technical features in addition to the technical solutions of the above embodiments.

[0064] Furthermore, a flow guide structure 21 that is bent downward and obliquely is provided at one end of the flow guide plate 2 away from the air nozzle body 1.

[0065] Further, the angle of the downward inclined bend of the flow guiding structure 21 is α, and α is 30° - 60°.

[0066] In this technical solution, through this structural design, the hot air flowing through the flow guiding plate 2 is guided downward, thereby reducing the upward wind force exerted on the pole piece by the hot air and preventing the pole piece from shaking when running in the oven. Further, by setting the angle of the downward inclined bend of the flow guiding structure 21 to be α, where α is 30° - 60°, the best flow guiding effect can be ensured. It is worth mentioning that the flow guiding structure 21 on the flow guiding plate 2 can be formed by bending the flow guiding plate 2, or can be formed by obliquely welding a separate stainless steel plate at the end of the flow guiding plate 2.

[0067] Example 6:

[0068] This embodiment provides a lower air nozzle structure, which has the following technical features in addition to including the technical solution of the above embodiment.

[0069] Further, the number of air inlets 11 is several, and a wind equalizing plate 3 is correspondingly arranged above each air inlet 11.

[0070] In this technical solution, through this structural design, the hot air inflow channels of the air nozzle body 1 can be increased, the air inlet efficiency of the air nozzle body 1 can be improved, and at the same time, it can ensure that the hot air flows into the air nozzle body 1 more evenly, avoid local overheating inside the air nozzle body 1, and effectively prevent the air nozzle body 1 from being damaged.

[0071] Example 7:

[0072] This embodiment provides an oven, which includes the lower air nozzle structure of any one of the above embodiments 1 - 6.

[0073] The embodiments of the present application have been described above in conjunction with the accompanying drawings. Without conflict, the embodiments and the features in the embodiments in the present application can be combined with each other. The present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them belong to the protection scope of the present application.

Claims

1. A downwind nozzle structure, characterized in that, Comprising: A nozzle body (1), the nozzle body (1) includes an air inlet end and an air outlet end, the air outlet end is the end for facing the electrode plate, the air inlet end is provided with an air inlet (11), the air outlet end is provided with two air outlets (12), and the two air outlets (12) are respectively located upstream and downstream in the running direction of the electrode plate; A deflector plate (2), the deflector plate (2) is installed outside the nozzle body (1); An air equalizing plate (3), the air equalizing plate (3) is installed inside the nozzle body (1), and its installation position corresponds to above the air inlet (11); Wherein, the deflector plate (2) is located on one side of the nozzle body (1) downstream along the running direction of the electrode plate.

2. The downwind nozzle structure according to claim 1, characterized in that, Further comprising: A wind guide plate (4), the wind guide plate (4) is arranged inside the nozzle body (1); Wherein, the wind guide plate (4) includes two arc-shaped guiding surfaces (41), the nozzle body (1) includes two inclined guiding surfaces (13), and an air outlet (12) is formed between the arc-shaped guiding surface (41) and the inclined guiding surface (13).

3. The downwind nozzle structure according to claim 1, characterized in that, The air equalizing plate (3) includes: A plate body, the plate body is installed inside the nozzle body (1), and its installation position corresponds to above the air inlet (11); A plurality of air equalizing holes (31), the plurality of air equalizing holes (31) are arranged in a linear array on the plate body.

4. The downwind nozzle structure according to claim 3, characterized in that, The plate body is detachably installed inside the nozzle body (1).

5. The downwind nozzle structure according to claim 3, characterized in that, The air equalizing hole (31) is any one of a round hole, a square hole or a waist-shaped hole.

6. The downwind nozzle structure according to claim 1, characterized in that The deflector plate (2) is detachably installed on the nozzle body (1).

7. The downwind nozzle structure according to claim 1, characterized in that, One end of the deflector plate (2) away from the nozzle body (1) is provided with a guiding structure (21) that is inclined and bent downward.

8. The downwind nozzle structure according to claim 7, characterized in that The angle of the downward inclined bend of the guiding structure (21) is α, and the α is 30° - 60°.

9. The downwind nozzle structure according to claim 1, characterized in that The number of the air inlets (11) is several, and an air equalizing plate (3) is correspondingly arranged above each air inlet (11).

10. An oven, characterized in that, Including the lower nozzle structure according to any one of claims 1 - 9 above.

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