High-precision air knife for perovskite slit coating

Abstract

The utility model discloses a high-precision air knife for perovskite slit coating, and relates to the technical field of coating. The left knife lip and the right knife lip are arranged in parallel, the gasket is arranged between the left knife lip and the right knife lip, a first constant-pressure groove is formed in the upper end of the inner wall of the left knife lip, a second constant-pressure groove is formed in the first constant-pressure groove, a rectangular flow stabilizing groove is formed in the lower end of the inner wall of the left knife lip, and an air inlet hole is formed in the upper surface of the left knife lip; the air inlet is communicated with the first constant-pressure groove and the second constant-pressure groove, and mounting holes are formed in the two opposite surfaces of the left knife lip. According to the utility model, the compatibility is higher, the gasket is arranged between the left knife lip and the right knife lip, so that the thickness of the used gasket can be conveniently changed according to the actual use condition, and more choices can be provided for the volatilization rates of different solutions by customers; the air pressure of the air outlet can be regulated and controlled in a multi-stage mode by a client, the precision of the air knife is improved, and therefore the air pressure can better meet the requirements of the client.

Description

Technical Field

[0001] The utility model belongs to the technical field of coating, in particular to a high-precision wind knife used for perovskite slit coating. Background Art

[0002] In recent years, the certified efficiency of perovskite solar cells has reached 25.5%, which is almost the same as traditional silicon cells. However, there is still a certain distance from its commercial application. How to efficiently prepare a stable perovskite light-absorbing layer is the main factor limiting commercialization.

[0003] The wind knife structure and shape design of existing similar products are relatively conservative and simple, with high requirements for air pressure, and the cavity has different effects on the wind pressure at each position, which will affect the volatilization rate of the perovskite solution solvent and the uniformity of the perovskite solution film formation; secondly, the wind pressure adjustment method is single and can only be adjusted from the air source, which cannot meet the same customer's impact on the solvent volatilization rate of different solutions. The wind knife has low uniformity, which has a greater impact on the experimental results. Therefore, a high-precision wind knife for perovskite slit coating is proposed. Utility Model Content

[0004] The utility model aims to provide a high-precision wind knife for perovskite slit coating to solve the existing problems.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model discloses a high-precision wind knife for perovskite slit coating, comprising a left blade lip, a gasket and a right blade lip, wherein the left blade lip is arranged in parallel with the right blade lip, and the gasket is arranged between the left blade lip and the right blade lip, so as to facilitate the customization of gaskets of different thicknesses according to actual use conditions, and to adjust the size of the cavity between the left blade lip and the right blade lip, so as to control the wind pressure; a first constant pressure groove is provided at the upper end of the inner wall of the left blade lip, a second constant pressure groove is provided in the first constant pressure groove, a rectangular flow stabilizing groove is provided at the lower end of the inner wall of the left blade lip, a plurality of air inlet holes are provided on the upper surface of the left blade lip, and the air inlet holes are connected with the first constant pressure groove and the second constant pressure groove, and mounting holes are provided on the two opposite surfaces of the left blade lip.

[0007] Furthermore, the inner wall of the left blade lip is arranged parallel to and opposite to the inner wall of the right blade lip.

[0008] Furthermore, the tops of the left blade lip and the right blade lip are in the same horizontal plane.

[0009] Furthermore, the shape and size of the gasket are adapted to the left blade lip and the right blade lip, and the gasket cooperates with the left blade lip and the right blade lip.

[0010] Furthermore, the number of the air inlet holes is 2, and the inner wall of the right blade lip is a smooth surface.

[0011] Furthermore, a plurality of threaded holes are arranged around the left blade lip and the right blade lip, a plurality of fixing holes are arranged around a surface of the gasket, and positions of the fixing holes are adapted to the threaded holes. The left blade lip, the gasket and the right blade lip are tightly fitted by passing fixing screws through the threaded holes and the fixing holes.

[0012] The utility model has the following beneficial effects:

[0013] The utility model has higher compatibility. By arranging a gasket between the left blade lip and the right blade lip, it is convenient to replace the thickness of the gasket used according to actual usage, so that the customer has more choices for the volatilization rate of different solutions. By adopting a separate processing method for the left blade lip, the gasket and the right blade lip, the customer's multi-level regulation of the air pressure at the air outlet can be solved, the accuracy of the wind knife is improved, so that the wind pressure can better meet the customer's needs.

[0014] Aiming at the problem that the original wind knife has uneven constant pressure, the utility model adds a second constant pressure groove on the original basis, so as to improve the uniformity of the outlet wind pressure.

[0015] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A schematic diagram of the structure of a high-precision air knife for perovskite slit coating;

[0018] Figure 2 It is a schematic diagram of the structure of the left blade lip and the gasket;

[0019] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0020] 1-left blade lip, 2-gasket, 3-right blade lip, 4-first constant pressure groove, 5-second constant pressure groove, 6-rectangular flow stabilizing groove, 7-air inlet hole, 8-mounting hole, 9-threaded hole, 10-fixing hole. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present invention, it should be understood that the terms "upper", "middle", "outer", "inner" and the like indicating directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limitations on the present invention.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] See also Figure 1-2 As shown, the utility model is a high-precision wind knife for perovskite slit coating, comprising a left blade lip 1, a gasket 2 and a right blade lip 3. The left blade lip 1 and the right blade lip 3 are arranged in parallel, and the gasket 2 is arranged between the left blade lip 1 and the right blade lip 3, so that it is convenient to customize the gasket 2 of different thicknesses according to actual use conditions, and adjust the size of the cavity between the left blade lip 1 and the right blade lip 3, so as to control the wind pressure; a first constant pressure groove 4 is provided at the upper end of the inner wall of the left blade lip 1, and a second constant pressure groove 5 is provided in the first constant pressure groove 4, so that the compressed air coming out of the air source can quickly achieve uniform pressure at various places when entering the wind knife; a rectangular flow stabilizing groove 6 is provided at the lower end of the inner wall of the left blade lip 1, so as to stabilize the airflow and thus stabilize the wind pressure; a plurality of air inlet holes 7 are provided on the upper surface of the left blade lip 1, so as to connect with the external air source; the air inlet holes 7 are connected with the first constant pressure groove 4 and the second constant pressure groove 5, and mounting holes 8 are provided on the opposite surfaces of the left blade lip 1, so as to facilitate the installation and fixation of the wind knife and its knife holder.

[0025] The inner wall of the left blade lip 1 and the inner wall of the right blade lip 3 are arranged parallel to each other, and the tops of the left blade lip 1 and the right blade lip 3 are in the same horizontal plane.

[0026] The shape and size of the gasket 2 are adapted to the left blade lip 1 and the right blade lip 3 , and the gasket 2 cooperates with the left blade lip 1 and the right blade lip 3 .

[0027] Among them, the number of air inlet holes 7 is 2, and the inner wall of the right blade lip 3 is a smooth surface; a plurality of threaded holes 9 are arranged around the left blade lip 1 and the right blade lip 3, and a plurality of fixing holes 10 are arranged around a surface of the gasket 2, and the positions of the fixing holes 10 are adapted to the threaded holes 9. The left blade lip 1, the gasket 2 and the right blade lip 3 are tightly fitted by passing fixing screws through the threaded holes 9 and the fixing holes 10.

[0028] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0029] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A high-precision air knife for perovskite slit coating, comprising a left knife lip (1), a gasket (2) and a right knife lip (3), characterized in that: The left blade lip (1) and the right blade lip (3) are arranged in parallel, the gasket (2) is arranged between the left blade lip (1) and the right blade lip (3), the upper end of the inner wall of the left blade lip (1) is provided with a first constant pressure groove (4), the first constant pressure groove (4) is provided with a second constant pressure groove (5), the lower end of the inner wall of the left blade lip (1) is provided with a rectangular flow stabilizing groove (6), the upper surface of the left blade lip (1) is provided with a plurality of air inlet holes (7), the air inlet holes (7) are connected with the first constant pressure groove (4) and the second constant pressure groove (5), and the left blade lip (1) is provided with mounting holes (8) on two opposite surfaces.

2. The high-precision air knife for perovskite slit coating according to claim 1, characterized in that: The inner wall of the left blade lip (1) and the inner wall of the right blade lip (3) are arranged parallel to each other.

3. The high-precision air knife for perovskite slit coating according to claim 1, characterized in that: The tops of the left blade lip (1) and the right blade lip (3) are located in the same horizontal plane.

4. The high-precision air knife for perovskite slit coating according to claim 1, characterized in that: The shape and size of the gasket (2) are adapted to the left blade lip (1) and the right blade lip (3), and the gasket (2) cooperates with the left blade lip (1) and the right blade lip (3).

5. The high-precision air knife for perovskite slit coating according to claim 1, characterized in that: The number of the air inlet holes (7) is 2, and the inner wall of the right blade lip (3) is a smooth surface.

6. The high-precision air knife for perovskite slit coating according to claim 1, characterized in that: The left blade lip (1) and the right blade lip (3) are both provided with a plurality of threaded holes (9) on their peripheries, and the gasket (2) is provided with a plurality of fixing holes (10) on its periphery. The positions of the fixing holes (10) are adapted to the threaded holes (9). The left blade lip (1), the gasket (2) and the right blade lip (3) are tightly fitted together by passing fixing screws through the threaded holes (9) and the fixing holes (10).

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