Powder coating clamp

Abstract

The invention belongs to the technical field of atomic layer deposition, and relates to a powder coating clamp, which comprises a clamping piece, a coating piece and a coating piece, a closed space is arranged in the clamping piece; the powder inner container is used for bearing dust; the powder inner container is arranged in the closed space; the air inlet is used for feeding air into the closed space; the air inlet is formed in the clamping piece and is connected with the closed space; the extraction opening is used for extracting air from the closed space; and the extraction opening is formed in the clamping piece, is close to the powder inner container and is connected with the closed space. The powder coating clamp provided by the invention is compatible with existing non-powder atomic layer deposition equipment, and powder coating can be carried out without equipment transformation; the powder clamp can be directly placed in the cavity of the non-powder atomic layer deposition equipment, and is convenient to disassemble, flexible and convenient; and the number of filter screens can be adjusted to be compatible with powder with different particle sizes.

Description

Technical Field

[0001] The invention relates to the technical field of atomic layer deposition, and in particular to a powder coating fixture. Background Art

[0002] There are many ways to coat or coat the surface of powders, among which the most widely used methods are chemical vapor deposition (CVD) and atomic layer deposition (ALD).

[0003] Chemical vapor deposition is a method of simultaneously passing one or more gaseous precursors into a reaction chamber, reacting in a gaseous environment, and finally growing a thin film on the surface of the material. Atomic layer deposition is a special chemical vapor deposition technology that forms a thin film layer by layer in the form of a single atomic layer by alternately passing gaseous precursors into a reaction chamber in the form of pulses and causing a chemical adsorption reaction on the surface of the deposited material.

[0004] As an excellent coating technology, atomic layer deposition (ALD) technology is widely used in powder surface passivation and surface modification due to its high purity, uniformity and good durability of the precipitated thin films. It is then widely used in many fields such as LED, energy storage, solar energy, etc.

[0005] Atomic layer deposition thin film coating on powders must achieve both dispersion between powders and complete coating. The main technical methods currently include: fluidized bed method (FluidizedBed), vibration (Vibration), pulsed air pressure method, rotation method, mechanical stirring method, etc.

[0006] However, the above methods can disperse the powder. Fluidized bed, vibration, rotation and mechanical stirring methods can damage the powder or film and affect the coating effect. The pulse air pressure method has poor dispersion effect and has high requirements for the pressure control of the equipment. Summary of the invention

[0007] In view of this, the present invention provides a powder coating fixture.

[0008] Specifically, the present invention is achieved through the following technical solutions:

[0009] According to a first aspect of the present invention, there is provided a powder coating fixture, comprising:

[0010] A clamping piece, used for clamping the powder liner; a closed space is provided in the clamping piece;

[0011] A powder liner, used for carrying dust; the powder liner is arranged in the enclosed space;

[0012] An air inlet, used for supplying air into the enclosed space; the air inlet is arranged on the clamping member and connected to the enclosed space;

[0013] The air extraction port is used for extracting air from the enclosed space; the air extraction port is arranged on the clamping member, close to the powder liner, and connected to the enclosed space.

[0014] Optionally, the clamping member includes: a bottom shell and an upper cover, wherein the edges of the bottom shell and the upper cover are correspondingly and tightly connected to form the enclosed space therebetween, the air inlet is arranged on the bottom shell, and the air exhaust port is arranged on the upper cover.

[0015] Optionally, the air inlet is arranged at a distal end opposite to the air extraction port.

[0016] Optionally, the aperture of the air inlet is 6 to 40 mm.

[0017] Optionally, the aperture of the air suction port is 80 to 120 mm.

[0018] Optionally, the powder liner is cylindrical.

[0019] Optionally, the diameter of the powder liner is 80-120 mm.

[0020] Optionally, the height of the powder liner is 10-20 mm.

[0021] Optionally, the powder liner includes: a lower stop ring, an upper stop ring, a lower filter screen and an upper filter screen, wherein the upper stop ring is connected to the inner wall of the enclosed space, the lower stop ring is correspondingly connected to the upper stop ring, and the through holes of the two are aligned, the lower filter screen and the upper filter screen are arranged between the lower stop ring and the upper stop ring, the upper filter screen covers the through holes of the upper stop ring, the lower filter screen covers the through holes of the lower stop ring, and the center of the air suction port, the center of the lower stop ring and the center of the upper stop ring coincide.

[0022] Optionally, the mesh sizes of the upper filter and the lower filter are 800-2000 meshes.

[0023] The technical solution provided by the present invention brings at least the following beneficial effects:

[0024] The powder coating fixture provided in the present application is compatible with existing non-powder atomic layer deposition equipment, and powder coating can be performed without equipment modification; the powder fixture can be placed directly inside the cavity of the non-powder atomic layer deposition equipment, which is easy to disassemble and flexible; the filter mesh size can be adjusted to be compatible with powders of different particle sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0027] Figure 1 A schematic structural diagram of a powder coating fixture provided by an embodiment of the present invention;

[0028] Figure 2 An exploded view of a powder coating fixture provided by an embodiment of the present invention;

[0029] Figure 3 A schematic structural diagram of a powder liner in a powder coating fixture provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Figure 1 A powder coating fixture suitable for an embodiment of the present invention is schematically shown.

[0032] Reference Figure 1-3 As shown, the present application provides a powder coating fixture, comprising:

[0033] A clamping piece, used to clamp the powder liner 104; a closed space is provided in the clamping piece;

[0034] A powder liner 104 is used to carry dust; the powder liner 104 is arranged in the enclosed space;

[0035] An air inlet 102, used for supplying air into the enclosed space; the air inlet 102 is disposed on the clamping member and connected to the enclosed space;

[0036] The air extraction port 103 is used for extracting air from the enclosed space; the air extraction port 103 is arranged on the clamping member, close to the powder liner 104, and connected to the enclosed space.

[0037] In the embodiment of the present application, during operation, the outside of the powder coating fixture is the reaction chamber of the atomic layer deposition equipment (not shown in the figure), and the reaction chamber is a cross-flow reaction chamber, one side is an air inlet, and the other side is an exhaust port. The air inlet 102 of the powder coating fixture is connected to the air inlet of the reaction chamber, and the exhaust port 103 is connected to the exhaust port of the reaction chamber. The powder 204 is placed in the middle position inside the powder liner 104, and the powder liner 104 is placed in a confined space and close to the exhaust port 103. The air inlet 102 is connected to the reaction chamber and the exhaust port 103. During the powder coating process, the gaseous precursor enters the confined space through the air inlet 102, and reacts and adsorbs with the powder in the powder liner 104, and the excess precursor and side reactants are extracted out of the cavity through the exhaust port 103.

[0038] The embodiment of the present application relates to a specially designed powder coating fixture, which is mainly used in the field of atomic layer deposition technology, especially in the coating process of powder. The following is a detailed description of the invention and its advantages:

[0039] Clamp: used to clamp and fix the powder liner. Design features: The internal design has a closed space to ensure that the gas flow and reaction environment during the coating process are controllable.

[0040] Powder liner: used to carry the dust or powder material to be coated. Position: set inside the closed space of the clamp.

[0041] Gas inlet: used to introduce the gas or precursor required for coating into the confined space. Position: set on the clamp and connected to the confined space.

[0042] Gas extraction port: used to extract gas from the confined space to maintain gas flow and pressure control during the coating process. Location: set on the clamp, close to the powder liner, and connected to the confined space. This design helps to more effectively remove the waste gas after the reaction while maintaining a stable gas environment around the powder liner.

[0043] Technical advantages

[0044] Compatibility: The powder coating fixture of the embodiment of the present application is compatible with existing non-powder atomic layer deposition equipment, and the powder coating process can be achieved without additional modification or adjustment of the equipment. Ease of use: The fixture is designed to be placed directly inside the cavity of the non-powder atomic layer deposition equipment. It is not only easy to install, but also easy to disassemble and replace, which improves the flexibility and operational efficiency of the coating process. Flexibility: The mesh size of the filter in the fixture can be adjusted as needed to be compatible with powder materials of different particle sizes. This design enables the fixture to be suitable for a variety of powder coating needs, improving the versatility and practicality of the equipment.

[0045] Application Scenario

[0046] It is applicable to various fields requiring powder coating, such as material science, electronic engineering, biomedicine, etc. In particular, in applications requiring precise coating of tiny particles or powders of complex shapes, the fixture of the present invention has significant advantages.

[0047] In summary, the powder coating fixture of the embodiment of the present application not only improves the efficiency and quality of powder coating, but also opens up new possibilities for the application of atomic layer deposition technology in the field of powder coating through its compatibility, ease of use and flexibility.

[0048] Exemplarily, the clamping member includes: a bottom shell 100 and an upper cover 101, wherein the edges of the bottom shell 100 and the upper cover 101 are correspondingly sealed and connected to form the enclosed space therebetween, the air inlet 102 is arranged on the bottom shell 100, and the air exhaust port 103 is arranged on the upper cover 101.

[0049] In the embodiment of the present application, the upper cover 101 is fixed to the bottom shell 100 through the threaded holes using fixing screws (not shown in the figure), which ensures the overall airtightness, facilitates disassembly, and reduces maintenance costs. The upper cover 101 and the shell 100 are both made of stainless steel or aluminum alloy materials, and the surface is a polished surface that has been polished.

[0050] Exemplarily, the air inlet 102 is disposed at a distal end opposite to the air extraction port 103 .

[0051] In the embodiment of the present application, the air inlet 102 is connected to the air inlet of the atomic layer deposition reaction chamber, and the gas precursor of the reaction is introduced into the powder liner 104 through the air inlet 102 of the shell 100 for powder coating.

[0052] Exemplarily, the aperture of the air inlet 102 is 6 to 40 mm.

[0053] In the embodiment of the present application, when the aperture of the gas inlet 102 is 6 to 40 mm, it can meet the need of connecting with the gas inlet of the atomic layer deposition reaction chamber.

[0054] Exemplarily, the diameter of the air suction port 103 is 80-120 mm.

[0055] In the embodiment of the present application, when the aperture of the gas exhaust port 103 is 80-120 mm, it can meet the need of connecting with the gas exhaust port of the atomic layer deposition reaction chamber.

[0056] Exemplarily, the powder liner 104 is cylindrical.

[0057] In the embodiment of the present application, the powder liner 104 can cover the air outlet 103 when it is cylindrical.

[0058] Exemplarily, the diameter of the powder liner 104 is 80-120 mm.

[0059] In the embodiment of the present application, when the diameter of the powder liner 104 is 80-120 mm, it can cover the air outlet 103 to prevent impurities from entering the enclosed space.

[0060] Exemplarily, the height of the powder liner 104 is 10-20 mm.

[0061] In the embodiment of the present application, when the height of the powder liner 104 is 10-20 mm, it can be installed in a confined space.

[0062] Exemplarily, the powder liner 104 includes: a lower stop ring 200, an upper stop ring 201, a lower filter 202 and an upper filter 203, wherein the upper stop ring 201 is connected to the inner wall of the enclosed space, the lower stop ring 200 is correspondingly connected to the upper stop ring 201, and the through holes of the two are aligned, the lower filter 202 and the upper filter 203 are arranged between the lower stop ring 200 and the upper stop ring 201, the upper filter 203 covers the through holes of the upper stop ring 201, and the lower filter 202 covers the through holes of the lower stop ring 200, and the center of the exhaust port 103, the center of the lower stop ring 200 and the center of the upper stop ring 201 coincide.

[0063] In the embodiment of the present application, the upper stop ring 201, the upper filter screen 203, the lower filter screen 202, and the lower stop ring 200 are fixed by fixing screws (not shown in the figure) through threaded holes, which can ensure the overall air tightness, facilitate disassembly, and reduce maintenance costs. Powder 204 is set between the lower filter screen 202 and the upper filter screen 203, and the gas enters the closed space through the air inlet 102, and then reacts and adsorbs with the powder 204 through the lower filter screen 202, and the excess precursor and side reaction products are extracted out of the cavity through the upper filter screen 203 and the air extraction port 103.

[0064] Exemplarily, the mesh sizes of the upper filter 203 and the lower filter 202 are 800-2000 meshes.

[0065] In the embodiment of the present application, the filter mesh size setting of 800-2000 mesh can meet the needs.

[0066] Detailed structure of powder coating fixture:

[0067] 1. Clamping parts

[0068] Bottom shell 100: as the bottom structure of the fixture, it forms a closed space together with the upper cover 101. The bottom shell 100 is provided with an air inlet 102 for introducing the gas or precursor required for coating.

[0069] Upper cover 101: Sealed and connected to the bottom shell 100 to form a complete closed space. The upper cover 101 is provided with an air extraction port 103 for extracting the waste gas after the reaction. The upper cover 101 is fixed to the bottom shell 100 by fixing screws to ensure air tightness.

[0070] 2. Air inlet and exhaust port

[0071] Air inlet 102: located on the bottom shell 100, connected to the air inlet of the atomic layer deposition reaction chamber. The aperture of the air inlet 102 is 6-40 mm, which meets the connection requirements.

[0072] The exhaust port 103 is located on the upper cover 101 and is connected to the exhaust port of the atomic layer deposition reaction chamber. The aperture of the exhaust port 103 is 80 to 120 mm to ensure that the exhaust gas can be discharged smoothly.

[0073] 3. Powder liner

[0074] Shape and size: The powder liner 104 is cylindrical, with a diameter of 80-120 mm and a height of 10-20 mm. Such a size design can not only cover the air extraction port 103 to prevent impurities from entering the confined space, but also meet the requirements of installation in a confined space.

[0075] Structure: The powder liner 104 includes a lower stop ring 200, an upper stop ring 201, a lower filter screen 202 and an upper filter screen 203. The upper stop ring 201 is connected to the inner wall of the enclosed space, and the lower stop ring 200 is correspondingly connected to the upper stop ring 201, and the through holes of the two are aligned. The lower filter screen 202 and the upper filter screen 203 are arranged between the lower stop ring 200 and the upper stop ring 201, covering the through holes of the lower stop ring 200 and the upper stop ring 201 respectively. Such a design not only ensures airtightness, but also facilitates disassembly and maintenance.

[0076] Filter mesh number: The mesh number of the upper filter 203 and the lower filter 202 is 800-2000 mesh. Such a filter mesh number setting can meet the coating requirements of powders with different particle sizes.

[0077] 5. Working Principle

[0078] During the coating process, the gas enters the enclosed space through the air inlet 102, and then passes through the lower filter 202 to react and adsorb with the powder 204. Excess precursors and side reactions are drawn out of the chamber through the upper filter 203 and the exhaust port 103. This design ensures the smooth coating process and the effective discharge of waste gas.

[0079] 6. Summary of advantages

[0080] Compatibility: The fixture design is compatible with existing non-powder atomic layer deposition equipment, without the need for equipment modification. Ease of use: The fixture is easy to disassemble and replace, reducing maintenance costs. Flexibility: The filter mesh size can be adjusted to accommodate powders of different particle sizes. Efficiency: The gas flow and reaction environment are controllable to ensure efficient coating process.

[0081] In summary, the powder coating fixture has significant advantages and broad application prospects, especially in applications where tiny particles or powders with complex shapes need to be precisely coated. The powder coating fixture provided in this application is compatible with existing non-powder atomic layer deposition equipment, and can be used for powder coating without equipment modification; the powder fixture can be directly placed inside the cavity of the non-powder atomic layer deposition equipment, which is convenient for disassembly and flexible; the mesh size of the filter can be adjusted to be compatible with powders of different particle sizes.

[0082] It should be noted that, in the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0083] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0084] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0085] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0086] The foregoing is merely a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be 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 will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A powder coating fixture, characterized in that: include: A clamping piece, used for clamping the powder liner; a closed space is provided in the clamping piece; A powder liner, used for carrying dust; the powder liner is arranged in the enclosed space; An air inlet, used for supplying air into the enclosed space; the air inlet is arranged on the clamping member and connected to the enclosed space; The air extraction port is used for extracting air from the enclosed space; the air extraction port is arranged on the clamping member, close to the powder liner, and connected to the enclosed space.

2. The powder coating fixture according to claim 1, characterized in that: The clamping member includes: a bottom shell and an upper cover, wherein the edges of the bottom shell and the upper cover are correspondingly and tightly connected to form the closed space therebetween, the air inlet is arranged on the bottom shell, and the air exhaust port is arranged on the upper cover.

3. The powder coating fixture according to claim 1, characterized in that: The air inlet is arranged at a distal end opposite to the air extraction port.

4. The powder coating fixture according to claim 1, characterized in that: The aperture of the air inlet is 6 to 40 mm.

5. The powder coating fixture according to claim 1, characterized in that: The aperture of the air extraction port is 80-120 mm.

6. The powder coating fixture according to claim 1, characterized in that: The powder liner is cylindrical.

7. The powder coating fixture according to claim 6, characterized in that: The diameter of the powder liner is 80-120 mm.

8. The powder coating fixture according to claim 6, characterized in that: The height of the powder liner is 10-20 mm.

9. The powder coating fixture according to claim 1, characterized in that: The powder liner includes: a lower gear ring, an upper gear ring, a lower filter and an upper filter, wherein the upper gear ring is connected to the inner wall of the enclosed space, the lower gear ring is correspondingly connected to the upper gear ring, and the through holes of the two are aligned, the lower filter and the upper filter are arranged between the lower gear ring and the upper gear ring, the upper filter covers the through holes of the upper gear ring, the lower filter covers the through holes of the lower gear ring, and the center of the air suction port, the center of the lower gear ring and the center of the upper gear ring coincide.

10. The powder coating fixture according to claim 9, characterized in that: The mesh numbers of the upper filter screen and the lower filter screen are 800-2000 meshes.

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