Adjustable drying oven air knife structure

Abstract

The utility model discloses an adjustable drying oven air knife structure, which relates to the technical field of drying ovens, and comprises a shell, an air return base plate arranged in the shell, an air outlet baffle plate, an adjusting piece, a slit baffle plate and a slit opening degree adjusting mechanism, the position of the air outlet baffle on the air return base plate can be adjusted, the opening degree of the air outlet can be changed, and the air outlet flow of the air outlet can be adjusted; through the arrangement of the slit baffle and the slit opening degree adjusting mechanism, the rotation angle of the slit baffle can be controlled, the opening degree of the slit air outlet can be conveniently controlled, and therefore the air outlet flow of the slit air outlet is controlled, the single air outlet amount is upgraded to the variable air outlet amount, so that different pole piece positions accurately receive the temperature requirements, and the same drying effect is achieved; and the cracking problem caused by excessive drying and drying rate difference in the thinned area is avoided.

Description

Technical Field

[0001] This utility model relates to the field of oven technology, and in particular to an adjustable oven air knife structure. Background Technology

[0002] As a representative of modern energy storage technology, lithium batteries' performance and application scope are directly related to the development of multiple fields such as electric vehicles, wearable devices, and energy storage power stations.

[0003] Film drying is a crucial step following slurry coating. This process primarily involves drying the slurry uniformly coated on the positive and negative current collectors. The quality of the dry film interface directly impacts the performance and safety of lithium-ion batteries, and oven drying technology plays a vital role in manufacturing electrodes with stable and uniform interfaces. Currently, traditional oven structures are mainly suspension drying systems, with key units consisting of an air supply system, an exhaust system, the oven body, air nozzles, and an outer casing. Airflow enters the air knife through the air supply system, passes through the flow equalization sieve, and converges in the converging channel. The pressure is higher at this point, while the pressure at the air knife outlet is lower. Therefore, under pressure, the airflow exits from the narrow slit outlet and is directed towards the electrode. The flow equalization sieve and the converging channel effectively organize and equalize the chaotic airflow, demonstrating the flow equalization characteristics of the air knife.

[0004] Traditional air knife structures can be referenced. Figure 1 As shown, the structure includes an air knife housing 1-1, a return air substrate 1-2, a flow equalization hole 1-3, and a wall slit air outlet 1-4. However, the air knife structure in this prior art has a single air outlet direction and air volume, which can easily lead to poor drying quality of the electrode surface. In addition, the size of the air outlet is fixed, and the air outlet speed cannot be controlled. Utility Model Content

[0005] The purpose of this invention is to provide an adjustable oven air knife structure to solve the above-mentioned technical problems.

[0006] The technical solution adopted in this utility model is as follows:

[0007] An adjustable oven air knife structure includes an outer shell, a return air base plate disposed within the outer shell, and further includes an air outlet baffle, an adjusting member, a slit baffle, and a slit opening adjustment mechanism. The return air base plate is provided with a plurality of the air outlet baffles, the adjusting member is connected to the air outlet baffles, the slit baffle is disposed at the slit air outlet at the lower end of the outer shell, and the slit opening adjustment mechanism is disposed on the outer shell and connected to the slit baffle.

[0008] Preferably, the air outlet baffle is provided with several ventilation holes.

[0009] Preferably, the adjusting component includes a screw, one end of which is rotatably connected to the air outlet baffle, and the screw is threadedly connected to the housing.

[0010] As a further preferred embodiment, the screw extends through the housing, and a handle is provided at the other end of the screw.

[0011] As a further preferred embodiment, one end of the screw is provided with a movable joint, and the screw is connected to the air outlet baffle through the movable joint.

[0012] As a further preferred embodiment, the screw has axially spaced scale lines on its sidewall.

[0013] Preferably, both ends of the slit baffle are rotatably connected to the outer casing via a pivot.

[0014] Preferably, the slit opening adjustment mechanism includes a knob, a limiting mechanism, a movable rod, and a first limiting block. The side wall of the housing has a mounting groove, and a limiting post is provided inside the mounting groove. The limiting post is hollow in the middle, and a plurality of limiting holes are provided on the outer wall of the limiting post. The limiting mechanism is located in the mounting groove and the limiting post. A plurality of first limiting blocks are provided on the side of the knob near the mounting groove. The movable rod passes through the knob and is connected to the limiting mechanism.

[0015] As a further preferred embodiment, the limiting mechanism includes a limiting sleeve, springs, limiting rods, and second limiting blocks. The limiting sleeve is disposed in the mounting groove and located outside the limiting post. One end of the limiting sleeve is provided with a plurality of the springs, which are connected to the inner wall of the mounting groove. A plurality of the limiting rods are provided on the inner wall of the limiting sleeve, which pass through the limiting hole and are connected to the movable rod. The other end of the limiting sleeve is provided with a plurality of the second limiting blocks.

[0016] As a further preferred embodiment, the slit opening adjustment mechanism further includes a connecting shaft and a connecting rod. One end of the connecting rod is connected to the connecting shaft, and the other end of the connecting rod is connected to the slit baffle. The connecting shaft is connected to the knob and is eccentrically positioned relative to the knob. An arc-shaped hole is provided on the side wall of the housing, and the connecting shaft passes through the arc-shaped hole.

[0017] The above technical solution has the following advantages or beneficial effects:

[0018] In this invention, the position of the air outlet baffle on the return air substrate can be adjusted by setting the air outlet baffle and the adjusting component, thereby changing the opening of the air outlet and adjusting the air outlet speed. The slit baffle and slit opening adjustment mechanism can control the blocking width of the slit baffle, making it easier to control the opening of the slit air outlet, thereby controlling the air outlet speed and air volume. This upgrades the single air volume to a variable air volume, allowing different electrode positions to accurately receive the temperature requirements, achieving the same drying effect and avoiding over-drying in the thinned area and cracking caused by differences in drying rate. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a wind knife in the prior art;

[0020] Figure 2 This is a schematic diagram of the adjustable oven air knife structure in this utility model;

[0021] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 This is a schematic diagram of the outer shell structure in this utility model;

[0023] Figure 5 yes Figure 4 Enlarged view of point B in the middle;

[0024] Figure 6 This is a schematic diagram showing the cooperation between the slit baffle and the slit opening adjustment mechanism in this utility model;

[0025] Figure 7 This is a schematic diagram of the cooperation between the knob and the limiting mechanism in this utility model.

[0026] In the diagram: 1-1, air knife housing; 1-2, return air base plate; 1-3, air distribution hole; 1-4, wall slit air outlet; 1, housing; 2, return air base plate; 3, air outlet baffle; 4, adjusting component; 401, screw; 402, handle; 403, movable joint; 5, slit baffle; 6, slit opening adjustment mechanism; 601, knob; 602, limiting mechanism; 603, movable rod; 604, first limiting block; 605, mounting groove; 606, limiting post; 607, limiting hole; 608, limiting sleeve; 609, spring; 610, limiting rod; 611, second limiting block; 612, connecting shaft; 613, connecting rod; 614, indicator; 615, angle scale; 616, arc-shaped hole; 7, rotating shaft. Detailed Implementation

[0027] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] Figure 1 This is a schematic diagram of the structure of a wind knife in the prior art; Figure 2 This is a schematic diagram of the adjustable oven air knife structure in this utility model; Figure 3 yes Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the outer shell structure in this utility model; Figure 5 yes Figure 4 Enlarged view of point B in the middle; Figure 6 This is a schematic diagram showing the cooperation between the slit baffle and the slit opening adjustment mechanism in this utility model; Figure 7 This is a schematic diagram showing the interaction between the knob and the limiting mechanism in this utility model. Please refer to [link / reference]. Figures 2 to 7The diagram illustrates a preferred embodiment of an adjustable oven air knife structure, comprising a housing 1, a return air base plate 2 disposed within the housing 1, and further including an air outlet baffle 3, an adjusting member 4, a slit baffle 5, and a slit opening adjustment mechanism 6. The return air base plate 2 is provided with a plurality of air outlet baffles 3, the adjusting member 4 is connected to the air outlet baffles 3, a slit baffle 5 is provided at the slit air outlet at the lower end of the housing 1, and the slit opening adjustment mechanism 6 is provided on the housing 1, connected to the slit baffle 5. In this embodiment, see [reference needed]. Figure 2 As shown, the return air base plate 2 inside the outer casing 1 has flow equalization holes, and the air outlet baffle 3 is located at the upper end of the return air base plate 2, or at the lower end of the return air base plate 2, to block part of the flow equalization holes. This allows adjustment of the air outlet opening at the lower end of the air knife structure, thereby changing the air outlet speed and thus the air outlet volume, achieving control of the air outlet volume. The adjusting component 4 can control the movement of the air outlet baffle 3 on the return air base plate 2, so as to control the position of the air outlet baffle 3 on the return air base plate 2. Different positions of the air outlet baffle 3 on the return air base plate 2 result in different air outlet openings.

[0031] During electrode coating, the material in the thinned areas on both sides of the electrode is slightly thinner than in the middle, and dries faster under the same conditions. This can easily cause nearby undried slurry to move to the sides, or cause over-drying of the sides due to less material, leading to cracking. In this embodiment, a slit baffle 5 is placed inside the slit outlet. The slit opening adjustment mechanism 6 controls the rotation of the slit baffle 5, thereby controlling the width of the slit baffle 5 and the opening of the slit outlet. This allows for control of the airflow speed at the slit outlet, ensuring that different positions on the electrode receive the required temperature precisely, achieving the same drying effect and preventing over-drying in the thinned areas or cracking of the electrode surface material due to differences in drying rates.

[0032] Furthermore, as a preferred embodiment, the air outlet baffle 3 is provided with several ventilation holes. The shape of the ventilation holes can be the same as the shape of the flow equalization holes. When the air outlet baffle 3 is moved, the ventilation holes can be directly opposite the flow equalization holes or partially overlap with the flow equalization holes, or the non-perforated area on the air outlet baffle 3 can cover the flow equalization holes, thus achieving different blocking effects and thereby controlling the air outlet speed.

[0033] Furthermore, in a preferred embodiment, the adjusting component 4 includes a screw 401, one end of which is rotatably connected to the air outlet baffle 3, and the screw 401 is threadedly connected to the housing 1. A threaded hole is provided on the side wall of the housing 1 for engaging with the screw 401. By rotating the screw 401, the screw 401 drives the air outlet baffle 3 to move, thereby changing the position of the air outlet baffle 3 on the return air base plate 2 and achieving different blocking effects.

[0034] Furthermore, as a preferred embodiment, the screw 401 penetrates the outer casing 1, and a handle 402 is provided at the other end of the screw 401. The handle 402 can be integrally formed with the screw 401, and the screw 401 can be easily controlled to rotate.

[0035] Furthermore, as a preferred embodiment, one end of the screw 401 is provided with a movable joint 403, and the screw 401 is connected to the air outlet baffle 3 through the movable joint 403. The movable joint 403 is fixedly connected to the air outlet baffle 3, while one end of the screw 401 is rotatably connected to the movable joint 403. A limit ring is provided inside the movable joint 403, and one end of the screw 401 is connected to the limit ring. The limit ring can rotate inside the movable joint 403 but will not disengage from the movable joint 403, nor will it move axially relative to the movable joint 403. Specifically, one end of the movable joint 403 is fixedly connected to the air outlet baffle 3, and the other end of the movable joint 403 is provided with an opening. The inner diameter of the opening is smaller than the inner diameter of the movable joint 403, and the outer wall of the limit ring contacts the inner wall of the movable joint 403. The outer diameter of the limit ring is larger than the inner diameter of the opening.

[0036] Furthermore, as a preferred embodiment, the screw 401 has axially spaced scale lines on its side wall. The scale lines can be arranged in three rows, distributed circumferentially along the screw 401, with each row also axially distributed. This ensures easy observation of the scale lines even after the screw 401 has rotated. The scale lines facilitate control of the movement distance of the air outlet baffle 3, allowing for a more intuitive assessment of the air outlet opening.

[0037] For example Figure 2As shown, the flow equalization holes and ventilation holes are defined along the length of the return air substrate 2 as the width direction. In this embodiment, the width of the flow equalization holes and the spacing between two adjacent flow equalization holes are fixed, as are the width of the ventilation holes and the spacing between two adjacent air outlets. When the air outlet baffle 3 is in its initial position, the ventilation holes and flow equalization holes are completely aligned, meaning that the orthographic projection of the ventilation holes on the horizontal plane completely coincides with the orthographic projection of the flow equalization holes on the horizontal plane. At this time, the air outlet baffle 3 does not play a role in adjusting the airflow of the air outlet. At this time, the scale "0" on the screw 401 is aligned with the side wall of the outer casing 1, and the screw reading is "0". When rotating the screw 401, the screw 401 will enter the outer casing 1, thereby pushing the air outlet baffle 3 to move. At this time, the movement distance of the screw 401 can be observed according to the scale on the screw 401, thereby obtaining the movement distance of the air outlet baffle 3, and then the alignment relationship between the ventilation holes and flow equalization holes can be determined. For example, when the reading on screw 401 is even, the ventilation hole and the flow equalization hole are completely aligned, and the outlet baffle 3 does not regulate the airflow at the outlet. When the reading on screw 401 is odd, the non-perforated area on the outlet baffle 3 completely covers the flow equalization hole. When the reading on screw 401 is between odd and even, the non-perforated area on the outlet baffle 3 will cover the flow equalization hole to varying degrees, thereby achieving the effect of regulating the airflow speed at the outlet.

[0038] Furthermore, as a preferred embodiment, the two ends of the slit baffle 5 are rotatably connected to the housing 1 via a pivot 7. Mounting holes for mounting the pivot 7 are provided on the side wall of the housing 1, facilitating the rotation of the slit baffle 5.

[0039] Furthermore, as a preferred embodiment, the slit opening adjustment mechanism 6 includes a knob 601, a limiting mechanism 602, a movable rod 603, and first limiting blocks 604. The side wall of the outer casing 1 has a mounting groove 605, and a limiting post 606 is disposed inside the mounting groove 605. The limiting post 606 is hollow in the middle, and its outer wall has several limiting holes 607. The limiting mechanism 602 is disposed within the mounting groove 605 and the limiting post 606. Several first limiting blocks 604 are disposed on the side of the knob 601 near the mounting groove 605. The movable rod 603 passes through the knob 601 and is connected to the limiting mechanism 602. In this embodiment, see... Figure 3 As shown, an angle scale 615 is provided on the outer wall of the outer casing 1, and an indicator 614 is provided on the side wall of the knob 601. This facilitates reading the rotation angle of the knob 601, thereby facilitating the control of the rotation angle of the slit baffle 5. Different rotation angles of the slit baffle 5 result in different blocking widths (areas) of the slit baffle 5. A through hole is provided in the middle of the knob 601, and a movable rod 603 is located in the through hole and can move axially within the through hole. The movable rod 603 can drive the limiting mechanism 602 to move axially.

[0040] Furthermore, as a preferred embodiment, the limiting mechanism 602 includes a limiting sleeve 608, springs 609, limiting rods 610, and second limiting blocks 611. The limiting sleeve 608 is disposed within the mounting groove 605 and located outside the limiting post 606. One end of the limiting sleeve 608 is provided with several springs 609, which are connected to the inner wall of the mounting groove 605. Several limiting rods 610 are provided on the inner wall of the limiting sleeve 608, which pass through the limiting hole 607 and are connected to the movable rod 603. The other end of the limiting sleeve 608 is provided with several second limiting blocks 611. The springs 609 are fixedly connected to the side of the mounting groove 605 away from the knob 601. The springs 609 can push the limiting sleeve 608 to move, allowing the second limiting blocks 611 on the limiting sleeve 608 to extend out of the mounting groove 605. In this configuration, a limiting groove is formed between two adjacent first limiting blocks 604, and the second limiting block 611 can enter the limiting groove and abut against the outer wall of the two adjacent first limiting grooves. This configuration enables the knob 601 to be automatically locked and prevents the knob 601 from shaking.

[0041] The cooperation between the limiting rod 610 and the limiting hole 607 allows the limiting rod 610 to move axially along the limiting post 606 within the limiting hole 607, preventing circumferential rotation of the limiting rod 610 and thus preventing circumferential rotation of the limiting sleeve 608. This ensures that the limiting sleeve 608 can only move axially along the limiting post 606. Furthermore, the side wall of the limiting rod 610 abuts against the inner wall of the limiting hole 607, preventing the limiting sleeve 608 from wobbling.

[0042] Furthermore, as a preferred embodiment, the slit opening adjustment mechanism 6 also includes a connecting shaft 612 and a connecting rod 613. One end of the connecting rod 613 is connected to the connecting shaft 612, and the other end of the connecting rod 613 is connected to the slit baffle 5. The connecting shaft 612 is connected to the knob 601. The connecting shaft 612 is eccentrically positioned relative to the knob 601. An arc-shaped hole 616 is provided on the side wall of the housing 1, and the connecting shaft 612 passes through the arc-shaped hole 616. The connecting rod 613 is arranged in a "︿" shape, and the connecting shaft 612 is rotatably connected to the connecting rod 613. The angle scale 615 and the mounting groove 605 are located on opposite sides of the arc-shaped hole 616. Because the connecting shaft 612 and the knob 601 are eccentrically positioned, rotating the knob 601 can drive the connecting shaft 612 to slide within the arc-shaped hole 616. The connecting shaft 612 will then drive the slit baffle 5 to rotate around the axis of the rotating shaft 7 via the connecting rod 613, thereby adjusting the opening of the slit air outlet. Because the connecting shaft 612 and the knob 601 are eccentrically positioned, the connecting shaft 612 will not come into contact with the first limiting block 604 or the second limiting block 611 when sliding within the arc-shaped hole 616.

[0043] When it is necessary to adjust the opening of the air outlet, the screw 401 can be rotated by the handle 402, so that the screw 401 moves the air outlet baffle 3 relative to the return air base plate 2. By observing the scale line on the screw 401, it can be determined whether the flow equalization hole on the return air base plate 2 is aligned with the ventilation hole on the air outlet baffle 3, thereby changing the opening of the air outlet and controlling the air outlet speed.

[0044] When it is necessary to control the opening of the slit air outlet, press the movable rod 603 first. The movable rod 603 will drive the limiting rod 610 to move, and the limiting rod 610 will drive the limiting sleeve 608 to move, causing the limiting sleeve 608 to compress the spring 609. This causes the second limiting block 611 to follow the limiting sleeve 608 into the mounting groove 605. At this time, the first limiting block 604 and the second limiting block 611 separate, making it easier to rotate the knob 601. Then, by rotating the knob 601, the opening can be adjusted according to the indicator 614 and the angle. The scale 615 is used to determine the rotation angle of the slit baffle 5. After it is rotated to the correct position, the movable rod 603 can be released. At this time, the limiting sleeve 608, under the push of the spring 609, automatically drives the second limiting block 611 to enter between the two adjacent first limiting blocks 604, thereby automatically locking the knob 601 and preventing the knob 601 from rotating. This locks the optimal position of the slit baffle 5 and controls the opening of the slit air outlet, thus changing the air outlet speed and air volume.

[0045] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adjustable oven air knife structure, comprising a shell and a return air base plate disposed within the shell, characterized in that, The air outlet baffle, the adjusting piece, the slit baffle and the slit opening adjusting mechanism are arranged on the air return base plate, the adjusting piece is connected with the air outlet baffle, the slit baffle is arranged at the slit air outlet of the lower end of the shell, the slit opening adjusting mechanism is arranged on the shell and connected with the slit baffle.

2. The adjustable oven air knife structure of claim 1, wherein, A plurality of air holes are arranged on the air outlet baffle.

3. The adjustable oven air knife structure of claim 1, wherein, The adjusting piece comprises a screw rod, one end of the screw rod is rotatably connected with the air outlet baffle, and the screw rod is threadedly connected with the shell.

4. The adjustable oven air knife structure of claim 3, wherein, The screw rod penetrates the shell, and the other end of the screw rod is provided with a handle.

5. The adjustable oven air knife structure of claim 3, wherein, One end of the screw rod is provided with a movable joint, and the screw rod is connected with the air outlet baffle through the movable joint.

6. The adjustable oven air knife structure of claim 3, wherein, Scale lines are arranged on the side wall of the screw rod in the axial direction.

7. The adjustable oven air knife structure of claim 1, wherein, Both ends of the slit baffle are rotatably connected with the shell through a rotating shaft.

8. The adjustable oven air knife structure of claim 1, wherein, The slit opening adjusting mechanism comprises a knob, a limiting mechanism, a movable rod and a first limiting block, an installation groove is arranged on the side wall of the shell, a limiting column is arranged in the installation groove, the middle part of the limiting column is hollow, a plurality of limiting holes are arranged on the outer wall of the limiting column, the limiting mechanism is arranged in the installation groove and the limiting column, a plurality of first limiting blocks are arranged on the side of the knob close to the installation groove, and the movable rod penetrates the knob and is connected with the limiting mechanism.

9. The adjustable oven air knife structure of claim 8, wherein, The limiting mechanism comprises a limiting sleeve, a spring, a limiting rod and a second limiting block, the limiting sleeve is arranged in the installation groove and located outside the limiting column, one end of the limiting sleeve is provided with a plurality of springs, the springs are connected with the inner wall of the installation groove, a plurality of limiting rods are arranged on the inner wall of the limiting sleeve, the limiting rods pass through the limiting holes and are connected with the movable rod, and the other end of the limiting sleeve is provided with a plurality of second limiting blocks.

10. The adjustable oven air knife structure of claim 8, wherein, The slit opening adjusting mechanism further comprises a connecting shaft and a connecting rod, one end of the connecting rod is connected with the connecting shaft, the other end of the connecting rod is connected with the slit baffle, the connecting shaft is connected with the knob, the connecting shaft is eccentrically arranged relative to the knob, an arc-shaped hole is arranged on the side wall of the shell, and the connecting shaft penetrates the arc-shaped hole.

Images