Air knife capable of discharging air uniformly

Abstract

An air knife capable of evenly discharging air comprises an air knife shell, an air uniformizing plate assembly and a lip assembly, the air uniformizing plate assembly is arranged in the air knife shell and used for conducting step-by-step pressure uniformizing on high-speed airflow, and the lip assembly is arranged at the air outlet position of the air knife shell, movably connected with the air knife shell, moves in the width direction of the air knife shell and used for adjusting the air outlet amount. Compared with the prior art, the internal space of the air knife shell is divided through the air uniformizing plate assembly, so that a plurality of cavities are formed between the air knife shell and the air uniformizing plate assembly, compressed air enters the air knife shell and sequentially flows through the cavities formed between the air uniformizing plate assembly and the air knife shell, and segmented pressure uniformizing is conducted on the compressed air through the air uniformizing plate assembly; the air knife shell and the lip assembly are arranged in a split mode, the lip assembly is independently moved in the width direction of the air knife shell, the size of the air outlet slit is changed, the straightness of the air outlet slit of the lip assembly is not affected, and uniform air outlet is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery production equipment technology, specifically to an air knife that provides uniform airflow. Background Technology

[0002] In the coating process of lithium battery production, a slurry needs to be coated on the surface of the substrate to form a wet film. The wet film is then dehydrated and dried to ensure stable adhesion to the substrate surface. To improve production efficiency and accelerate the drying rate of the wet film, an air knife device is often used to speed up the drying process.

[0003] Air knives utilize the Coanda effect to transform compressed air entering at the inlet into a high-speed airflow curtain at the outlet for cleaning or drying object surfaces. In existing air knife structures, the air knife housing and lip are generally a single integrated structure. Adjusting the lip slit width typically involves applying external force directly to the air knife structure, causing structural deformation of the lip. This results in poor straightness at the lip slit, affecting the uniformity of the airflow and consequently impacting the drying effect of the wet film. Furthermore, the direct connection between the air inlet and outlet of the air knife structure prevents the smooth regulation of turbulent compressed air, leading to uneven airflow velocity at the outlet and further affecting the drying effect of the wet film.

[0004] Therefore, it is necessary to improve upon the above-mentioned issues. Utility Model Content

[0005] To address the above shortcomings, the technical problem to be solved by this utility model is to provide an air knife with uniform airflow that can stabilize the internal airflow, adjust the slit width without affecting the lip structure, and improve the uniformity of airflow at the air knife outlet.

[0006] To solve the above technical problems, the technical solution adopted by this utility model is: a uniform air outlet air knife, including an air knife housing, an air distribution plate assembly and a lip assembly; the air distribution plate assembly is disposed inside the air knife housing and is used to uniformly pressurize the high-speed airflow step by step; the lip assembly is disposed at the air outlet of the air knife housing and is movably connected to the air knife housing, and moves along the width direction of the air knife housing to adjust the air outlet volume.

[0007] As a preferred embodiment of this utility model, the lip assembly 3 includes two symmetrically arranged air outlet adjustment components. Each air outlet adjustment component includes a flexible connecting part and an air outlet part, with the air outlet part inclined to the flexible connecting part.

[0008] As a preferred embodiment of this utility model, a plurality of mating grooves are formed on the flexible connection part, and the plurality of mating grooves are arranged along the length direction of the flexible connection part.

[0009] As a preferred embodiment of this utility model, a plurality of waist-shaped holes are formed on the flexible connecting part, and the waist-shaped holes are located between two adjacent mating grooves.

[0010] As a preferred embodiment of the present invention, the flexible connection part is further provided with a plurality of first mounting holes, the first mounting holes being located at the bottom of the mating groove, and the adjacent first mounting holes being spaced apart by mating grooves.

[0011] As a preferred embodiment of this utility model, the air outlet of the air knife housing extends outward to form a number of docking blocks, which are arranged along the length of the air knife housing.

[0012] As a preferred embodiment of this utility model, the bottom of the air knife housing has a plurality of second mounting holes, which are located between two adjacent mating blocks.

[0013] As a preferred embodiment of this utility model, a plurality of first lip adjustment holes and a plurality of second lip adjustment holes are arranged at intervals on the air knife housing; the plurality of first lip adjustment holes and the plurality of second lip adjustment holes are distributed on a plurality of mating blocks, and only one first lip adjustment hole or one second lip adjustment hole is distributed on each mating block.

[0014] As a preferred embodiment of this utility model, the air distribution plate assembly includes a first air distribution plate and a second air distribution plate arranged in parallel, with the first air distribution plate and the second air distribution plate perpendicular to the inner wall of the air knife housing.

[0015] As a preferred embodiment of this utility model, the first air distribution plate is formed with an array of first air distribution holes, and the second air distribution plate is formed with an array of second air distribution holes.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: by dividing the internal space of the air knife housing by the air equalization plate assembly, multiple cavities are formed between the air knife housing and the air equalization plate assembly. Compressed air enters the air knife housing and flows through the cavities formed between the air equalization plate assembly and the air knife housing in sequence. The air equalization plate assembly performs segmented pressure equalization on the compressed air, so that the compressed air forms a stable airflow. By separately setting the air knife housing and the lip assembly, the lip assembly can be moved independently along the width direction of the air knife housing to change the size of the air outlet slit without affecting the straightness of the air outlet slit of the lip assembly, thus ensuring uniform air outlet. Attached Figure Description

[0017] Figure 1 A front view of an air knife with uniform airflow provided in an embodiment of this application;

[0018] Figure 2 for Figure 1 Sectional view along the middle AA direction;

[0019] Figure 3 This is a schematic diagram of the structure of the air outlet regulating component provided in the embodiments of this application;

[0020] Figure 4 This is a schematic diagram of the structure of the air knife housing provided in an embodiment of this application;

[0021] Figure 5 A top view of the first air distribution plate provided in an embodiment of this application;

[0022] Figure 6 A top view of the second air distribution plate provided in an embodiment of this application;

[0023] Figure 7 A schematic diagram of the structure of an air knife with uniform airflow provided in an embodiment of this application;

[0024] Reference numerals: 1. Air knife housing; 1-1. Connecting block; 1-2. Second mounting hole; 1-3. First lip adjustment hole; 1-4. Second lip adjustment hole; 2. Air distribution plate assembly; 2-1. First air distribution plate; 2-11. Second air distribution plate; 2-2. Second air distribution hole; 2-21. Lip assembly; 3. Air outlet adjustment component; 3-1. Flexible connection part; 3-11. Connecting groove; 3-111. Waist-shaped hole; 3-112. First mounting hole; 3-113. Air outlet part; 3-12. Detailed Implementation

[0025] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0026] The following description provides examples and does not limit the scope, applicability, or examples set forth in the claims. Changes may be made to the function and arrangement of the described elements without departing from the scope of this application. Various processes or components may be appropriately omitted, substituted, or added to the examples. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Furthermore, features described with respect to some examples may be combined into other examples.

[0027] like Figure 1 and Figure 2 As shown, a uniformly vented air knife includes an air knife housing 1, a uniform air distribution plate assembly 2, and a lip assembly 3. The uniform air distribution plate assembly 2 is disposed inside the air knife housing 1 and is used to uniformly pressurize the high-speed airflow step by step. The lip assembly 3 is disposed at the air outlet of the air knife housing 1 and is movably connected to the air knife housing 1. It moves along the width direction of the air knife housing 1 and is used to adjust the airflow volume.

[0028] Specifically, the air distribution plate assembly 2 divides the internal space of the air knife housing 1 into multiple cavities. Compressed air enters the air knife housing 1 and flows sequentially through the cavities formed between the air distribution plate assembly 2 and the air knife housing 1. The air distribution plate assembly 2 segments and evenly presses the compressed air, thus forming a stable airflow. The lip assembly 3 is separately set from the air knife housing 1. The size of the air outlet slit can be changed by moving the lip assembly 3 independently along the width direction of the air knife housing 1 without affecting the straightness of the air outlet slit of the lip assembly 3, thus ensuring uniform airflow.

[0029] like Figure 2 As shown, the lip assembly 3 includes two symmetrically arranged air outlet regulating components 3-1. Each air outlet regulating component 3-1 includes a flexible connecting part 3-11 and an air outlet part 3-12, with the air outlet part 3-12 inclined to the flexible connecting part 3-11. The flexible connecting part 3-11 and the air outlet part 3-12 are an integral structure. The flexible connecting part 3-11 is connected to the air knife housing 1, and the air outlet part 3-12 is located below the flexible connecting part 3-11. A slit is formed between the two symmetrically arranged air outlet parts 3-12, and the airflow inside the air knife housing 1 is blown out from the slit.

[0030] like Figure 3 and Figure 4 As shown, a plurality of mating grooves 3-111 are formed on the flexible connecting part 3-11, and the plurality of mating grooves 3-111 are arranged along the length direction of the flexible connecting part 3-11. A plurality of mating blocks 1-1 are formed extending outward from the air outlet of the air knife housing 1, and the plurality of mating blocks 1-1 are arranged along the length direction of the air knife housing 1. Two air outlet adjusting components 3-1 are provided at the air outlet of the air knife housing 1. The air outlet adjusting components 3-1 are movably connected to the air knife housing 1 through the flexible connecting part 3-11. The mating grooves 3-111 at the end of the flexible connecting part 3-11 are aligned with the mating blocks 1-1 at the end of the air knife housing 1, which facilitates the subsequent installation of the air outlet adjusting components 3-1 onto the air knife housing 1.

[0031] Furthermore, the flexible connecting portion 3-11 has several oblong holes 3-112, which are located between two adjacent mating grooves 3-111. The bottom of the air knife housing 1 has several second mounting holes 1-2, which are located between two adjacent mating blocks 1-1. The oblong holes 3-112 at the end of the flexible connecting portion 3-111 are opposite to the second mounting holes 1-2 at the end of the air knife housing 1. The oblong holes 3-112 are through holes. -2 is a screw hole. The length of the oblong hole 3-112 is greater than the diameter of the second mounting hole 1-2. The screw or bolt passes through the oblong hole 3-112 and connects to the second mounting hole 1-2, pressing the air outlet adjustment component 3-1 onto the air knife housing 1. Since the length of the oblong hole 3-112 is greater than the diameter of the second mounting hole 1-2, the air outlet adjustment component 3-1 can move along the length of the oblong hole 3-112 on the air knife housing 1, thereby adjusting the slit width between the two symmetrically arranged air outlets 3-12.

[0032] like Figure 3 and Figure 4As shown, the flexible connecting part 3-11 also has a plurality of first mounting holes 3-113. The first mounting holes 3-113 are located at the bottom of the mating groove 3-111. Two adjacent first mounting holes 3-113 are spaced apart. The number of first mounting holes 3-113 is less than the number of mating grooves 3-111. The air knife housing 1 has a plurality of first lip adjustment holes 1-3 and a plurality of second lip adjustment holes 1-4. The plurality of first lip adjustment holes 1-3 and the plurality of second lip adjustment holes 1-4 are arranged on a plurality of mating blocks 1-1. Each mating block 1-1 has only one first lip adjustment hole 1-3 or one second lip adjustment hole 1-4. A second lip adjustment hole 1-4 is spaced apart between two adjacent first lip adjustment holes 1-3. A first lip adjustment hole 1-3 is spaced apart between two adjacent second lip adjustment holes 1-4. The first mounting hole 3-113 and the second lip adjustment hole 1-4 are both screw holes, and the first lip adjustment hole 1-3 is a through hole. The first mounting hole 3-113 and the first lip adjustment hole 1-3 are correspondingly set and connected by screws or bolts. When the screws or bolts between the first mounting hole 3-113 and the first lip adjustment hole 1-3 are tightened, the air outlet adjustment component 3-1 will move in the direction closer to the air knife housing 1. The second lip adjustment hole 1-4 is correspondingly set with the mating groove 3-111 at the bottom of the groove where there is no first mounting hole 3-113. The second lip adjustment hole 1-4 is connected with screws or bolts. When the screws or bolts on the second lip adjustment hole 1-4 are tightened, the air outlet adjustment component 3-1 will move in the direction away from the air knife housing 1. By adjusting the tightening degree of the screws or bolts set on the first lip adjustment hole 1-3 and the second lip adjustment hole 1-4, the distance between the air outlet adjustment component 3-1 and the air knife housing 1 is adjusted, thereby adjusting the slit distance between the two air outlet adjustment components 3-1.

[0033] like Figure 2 As shown, the air distribution plate assembly 2 includes a first air distribution plate 2-1 and a second air distribution plate 2-2 arranged in parallel. The first air distribution plate 2-1 and the second air distribution plate 2-2 are perpendicular to the inner wall of the air knife housing 1. The first air distribution plate 2-1 and the second air distribution plate 2-2 cooperate to divide the cavity inside the air knife housing 1. Compressed air enters the air knife housing 1 from the air inlet, and then undergoes the first round of pressure equalization through the first air distribution plate 2-1. Then it flows into the cavity formed by the obstruction of the first air distribution plate 2-1 and the second air distribution plate 2-2, and then undergoes the second round of pressure equalization through the second air distribution plate 2-2. It then flows to the air outlet of the air knife housing 1 and then flows through the lip assembly 3 to act on the outside.

[0034] like Figure 5 and Figure 6 As shown, the first air distribution plate 2-1 has an array of first air distribution holes 2-11, and the second air distribution plate 2-2 has an array of second air distribution holes 2-21.

[0035] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0036] Although this document frequently uses reference numerals from the accompanying drawings, such as: air knife housing 1, docking block 1-1, second mounting hole 1-2, first lip adjustment hole 1-3, second lip adjustment hole 1-4, air distribution plate assembly 2, first air distribution plate 2-1, first air distribution hole 2-11, second air distribution hole 2-21, second air distribution plate 2-2, lip assembly 3, air outlet adjustment component 3-1, flexible connection part 3-11, docking groove 3-111, waist-shaped hole 3-112, first mounting hole 3-113, and air outlet part 3-12, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. An air knife with uniform airflow, characterized in that, It includes an air knife housing (1), an air distribution plate assembly (2), and a lip assembly (3); the air distribution plate assembly (2) is disposed inside the air knife housing (1) and is used to uniformly pressurize the high-speed airflow step by step; the lip assembly (3) is disposed at the air outlet of the air knife housing (1) and is movably connected to the air knife housing (1), and moves along the width direction of the air knife housing (1) to adjust the air volume.

2. The air knife with uniform airflow according to claim 1, characterized in that, The lip assembly (3) includes two symmetrically arranged air outlet adjustment components (3-1). The air outlet adjustment component (3-1) includes a flexible connecting part (3-11) and an air outlet part (3-12). The air outlet part (3-12) is inclined to the flexible connecting part (3-11).

3. The air knife with uniform airflow according to claim 2, characterized in that, A plurality of mating grooves (3-111) are formed on the flexible connecting part (3-111), and the plurality of mating grooves (3-111) are arranged along the length direction of the flexible connecting part (3-111).

4. The air knife with uniform airflow according to claim 3, characterized in that, The flexible connecting part (3-11) has a plurality of waist-shaped holes (3-112) formed thereon, and the waist-shaped holes (3-112) are located between two adjacent mating grooves (3-111).

5. The air knife with uniform airflow according to claim 3, characterized in that, The flexible connecting part (3-11) also has a plurality of first mounting holes (3-113), the first mounting holes (3-113) are located at the bottom of the mating groove (3-111), and the mating groove (3-111) is spaced apart between adjacent first mounting holes (3-113).

6. The air knife with uniform airflow according to claim 1, characterized in that, The air outlet of the air knife housing (1) extends outward to form several docking blocks (1-1), and the several docking blocks (1-1) are arranged along the length direction of the air knife housing (1).

7. The air knife with uniform airflow according to claim 6, characterized in that, The bottom of the air knife housing (1) has several second mounting holes (1-2), which are located between two adjacent mating blocks (1-1).

8. The air knife with uniform airflow according to claim 6, characterized in that, The air knife housing (1) has a plurality of first lip adjustment holes (1-3) and a plurality of second lip adjustment holes (1-4) arranged at intervals; the plurality of first lip adjustment holes (1-3) and the plurality of second lip adjustment holes (1-4) are distributed on a plurality of docking blocks (1-1), and only one first lip adjustment hole (1-3) or one second lip adjustment hole (1-4) is distributed on one docking block (1-1).

9. The air knife with uniform airflow according to claim 1, characterized in that, The wind distribution plate assembly (2) includes a first wind distribution plate (2-1) and a second wind distribution plate (2-2) arranged in parallel, with the first wind distribution plate (2-1) and the second wind distribution plate (2-2) perpendicular to the inner wall of the wind knife housing (1).

10. The air knife with uniform airflow according to claim 9, characterized in that, The first air distribution plate (2-1) has an array of first air distribution holes (2-11), and the second air distribution plate (2-2) has an array of second air distribution holes (2-21).

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