Powder applying device and production equipment for aerogel composite material

Abstract

The utility model provides a powder applying device and production equipment for an aerogel composite material. The powder applying device comprises a stock bin assembly, a powder screening assembly and a spreading assembly. The stock bin assembly is used for containing aerogel powder. And a discharge hole is formed in the lower part of the stock bin assembly. And the discharging device is used for discharging the accommodated aerogel powder. The powder screening assembly is located below the stock bin assembly. The powder screening assembly is aligned with the discharging port in the vertical direction and used for receiving the aerogel powder discharged by the stock bin assembly and applying the aerogel powder to the upper surface of the porous base material. The spreading assembly is arranged downstream of the powder screening assembly in the advancing direction of the porous substrate. The spreading assembly comprises a scraping plate suitable for being arranged above the porous base material and is used for spreading aerogel powder applied to the upper surface of the porous base material. According to the utility model, the distribution uniformity of aerogel powder on the porous base material can be improved, so that the surface flatness and the thickness consistency of the prepared aerogel composite material can be improved.

Description

Technical Field

[0001] This utility model generally relates to the technical field of aerogel composite product production equipment, and more specifically to a powdering device and a production equipment for aerogel composite materials. Background Technology

[0002] Aerogel composites are a novel and advanced material made by combining nano-aerogel particles and fiber materials through a special process. They possess properties such as lightweight, high-efficiency thermal insulation, fire resistance, and environmental friendliness, and are widely used in fields such as construction, petroleum, and aerospace. For example, they can be applied to flame-retardant and thermal insulation structures between adjacent battery cells in new energy batteries.

[0003] In recent years, many studies have focused on preparing aerogel composites by secondary lamination of aerogel powder prepared by atmospheric pressure drying into fiber mats using special processes. One disclosed technique involves manually or electrostatically spreading aerogel powder onto fiber mats and then laminating it using a needle-punching process. However, the uneven distribution of aerogel powder on the fiber material results in poor surface flatness and thickness uniformity in the prepared aerogel composite.

[0004] Therefore, there is a need to provide a powdering device and a production equipment for aerogel composite materials to at least partially solve the above problems. Utility Model Content

[0005] The present invention includes a series of simplified concepts, which will be further explained in detail in the detailed description section. This present invention is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0006] To at least partially solve the above problems, the first aspect of this utility model provides a powder application device for applying aerogel powder to the surface of a porous substrate, the powder application device comprising:

[0007] A hopper assembly for containing aerogel powder, wherein the lower part of the hopper assembly is provided with a discharge port for discharging the contained aerogel powder;

[0008] A sieving assembly, located below the hopper assembly and vertically aligned with the outlet, is used to receive aerogel powder discharged from the hopper assembly and apply it to the upper surface of the porous substrate; and

[0009] A spreading assembly is arranged downstream of the powder sieving assembly along the travel direction of the porous substrate. The spreading assembly includes a scraper adapted to be disposed above the porous substrate for spreading aerogel powder applied to the upper surface of the porous substrate.

[0010] According to the powder application device of the first aspect of this utility model, in application, the aerogel powder is first collected and discharged through the hopper assembly. Then, the aerogel powder discharged from the hopper assembly is received by the powder sieving assembly and applied to the upper surface of the porous substrate, so that the aerogel powder is initially dispersed in the porous substrate. Next, the aerogel powder applied to the porous substrate is spread, expanded, scraped, and leveled by the spreading assembly, so that the aerogel powder is more evenly distributed in the porous substrate, and it helps to make the thickness of the aerogel powder in various parts of the porous substrate more uniform and consistent. By adopting the above technical means, the uniformity of the distribution of aerogel powder in the porous substrate can be improved, thereby improving the surface flatness and thickness consistency of the obtained aerogel composite material.

[0011] In some embodiments, the powder screening assembly includes:

[0012] A screen component, which is aligned vertically with the discharge port and is movably disposed in a transverse direction to the direction of travel;

[0013] The first reciprocating transmission component; and

[0014] A first reciprocating drive component is connected to the screen component via a first reciprocating transmission component to drive the screen component to reciprocate in the lateral direction, and to apply aerogel powder to the upper surface of the porous substrate while the screen component is reciprocating.

[0015] According to some embodiments of the powder application device of this utility model, a first reciprocating drive component drives a screen component to move in the transverse direction via a first reciprocating transmission component. This allows the screen component to apply aerogel powder to the upper surface of a porous substrate during its reciprocating motion, thereby distributing the aerogel powder laterally across the upper surface of the porous substrate and initially achieving uniform distribution of the aerogel powder on the porous substrate. Simultaneously, this helps improve the spreading efficiency and effect of the spreading component on the aerogel powder, reduces the difficulty of spreading the aerogel powder, and thus facilitates the simplification of the spreading component's structure.

[0016] In some embodiments, the hopper assembly includes:

[0017] The hopper has a feed inlet at the top and a discharge outlet at the bottom, with the discharge outlet extending laterally to the direction of travel.

[0018] A perforated plate, wherein the perforated plate has material passage holes, and the perforated plate is connected to the hopper at the discharge port; and

[0019] A stirring component is movably disposed in the chamber of the silo and is used to stir the aerogel powder located on the upper part of the porous plate.

[0020] According to some embodiments of the present invention, the powder application device can receive and contain the aerogel powder to be applied using a hopper. A perforated plate slows down the discharge speed of the aerogel powder from the outlet and allows it to be discharged in a more dispersed manner, thus facilitating the distribution of the aerogel powder on the sieving assembly and preventing rapid local accumulation of the aerogel powder on the sieving assembly. Simultaneously, an agitator stirs the aerogel powder in the hopper to prevent it from clogging the perforated plate's holes and hindering its discharge from the outlet. This also improves the uniformity of the aerogel powder distribution on the perforated plate, further facilitating the more even release of the aerogel powder onto the sieving assembly.

[0021] In some embodiments, the agitation member includes a brush roller rotatably disposed in the chamber about a rotation axis parallel to the transverse direction;

[0022] The hopper assembly also includes an agitation drive component connected to the brush roller to drive the brush roller to rotate.

[0023] According to some embodiments of the present invention, the powder application device uses the brush roller of the stirring component to stir the aerogel powder in the chamber, which can increase the contact surface with the aerogel powder, thereby improving the stirring efficiency and the fullness of stirring. At the same time, it is also beneficial to further improve the uniformity of the distribution of aerogel powder on the porous plate and the uniformity of aerogel powder on the powder screening component.

[0024] In some embodiments, the perforated plate is detachably connected to the lower part of the hopper.

[0025] According to some embodiments of the powder application device of this utility model, since the perforated plate is detachable, it is convenient to replace or disassemble the perforated plate. For example, perforated plates with different pore sizes can be selected according to the particle size of the aerogel powder, the required discharge speed, the damage condition, etc., or the perforated plate can be removed when cleaning is required.

[0026] In some embodiments, the perforated plate is located in the chamber and extends circumferentially from the brush roller.

[0027] According to some embodiments of the powder application device of the present invention, this is beneficial to increase the area of ​​the brush roller facing the perforated plate, thereby increasing the agitation rate or agitation range of the aerogel powder located on the perforated plate, so as to further reduce or avoid the aerogel powder clogging the perforated plate.

[0028] In some embodiments, the top of the hopper is provided with a feed inlet, which extends along the lateral direction;

[0029] The powdering device further includes a feeding assembly, which includes a feeding guide. The lower end of the feeding guide is movably connected to the hopper assembly in the transverse direction at the feed inlet, and the upper end of the feeding guide is adapted to be connected to a feeding device to receive aerogel powder.

[0030] According to some embodiments of the powder application device of this utility model, the aerogel powder conveyed by the feeding device is received by the feeding guide of the feeding assembly and guided from the inlet into the hopper while moving in the lateral direction. This enables the aerogel powder to be distributed in the lateral direction in the hopper, thereby improving the uniformity of the aerogel powder distribution in the lateral direction in the hopper.

[0031] In some embodiments, the feeding assembly further includes:

[0032] A second reciprocating transmission component, one end of which is connected to the feed guide component; and

[0033] A second reciprocating drive member is connected to the other end of the second reciprocating transmission member to drive the feed guide member to move in the lateral direction via the second reciprocating transmission member.

[0034] According to some embodiments of the present invention, the powdering device drives the feeding guide to reciprocate in the lateral direction via the second reciprocating drive component and the second reciprocating transmission component. This eliminates the need for manual intervention, thereby reducing labor intensity and improving production efficiency.

[0035] In some embodiments, the spreading assembly further includes a support platform for supporting the porous substrate, the support platform being located below the scraper and spaced apart from the scraper in the vertical direction;

[0036] The scraper includes a first plate portion and a second plate portion arranged opposite to each other, the first plate portion and the second plate portion being arranged to intersect and form a clamping opening, the clamping opening being opposite to the hopper assembly in the direction of travel.

[0037] According to some embodiments of the powder application device of this utility model, by setting a support platform below the scraper, the porous substrate passing through the spreading component can be supported, so that the porous substrate below the scraper is more flat, thereby improving the uniformity of the scraper spreading the aerogel powder and ensuring the consistency of the thickness of the aerogel powder in each part.

[0038] In some embodiments, the spreading assembly further includes a spacing adjustment member connected between the support platform and the scraper, operable to change the spacing between the scraper and the support platform in the vertical direction.

[0039] According to some embodiments of the present invention, the powder application device, by setting a spacing adjustment component, facilitates the adjustment of the spacing between the scraper and the support platform according to production needs, thereby helping to change the thickness of the aerogel powder spread on the porous substrate.

[0040] In some embodiments, the scraper further includes an intermediate plate portion connected between the first plate portion and the second plate portion.

[0041] The spreading components also include:

[0042] A first spacing adjustment member is disposed between the end of the first plate portion away from the intermediate plate portion and the support platform, for adjusting the spacing between the end of the first plate portion away from the intermediate plate portion and the support platform in the vertical direction.

[0043] A second spacing adjustment member is disposed between the end of the second plate portion away from the intermediate plate portion and the support platform. The second spacing adjustment member is used to adjust the spacing in the vertical direction between the end of the second plate portion away from the intermediate plate portion and the support platform.

[0044] A third spacing adjustment component is disposed between the intermediate plate and the support platform, and the third spacing adjustment component is used to adjust the spacing between the intermediate plate and the support platform in the vertical direction.

[0045] According to some embodiments of the present invention, the powdering device is provided with a first spacing adjustment member, a second spacing adjustment member and a third spacing adjustment member, so as to facilitate the corresponding adjustment of the vertical spacing between the first plate and the support platform, the second plate and the support platform and the intermediate plate and the support platform.

[0046] A second aspect of this utility model provides a production equipment for aerogel composite materials, the production equipment for aerogel composite materials comprising:

[0047] An unwinding device for unwinding the porous substrate in a roll shape;

[0048] A winding device, which is arranged at intervals with the unwinding device along the travel direction, is used to wind up a porous substrate impregnated with aerogel powder and to pull the porous substrate to move along the travel direction.

[0049] The powdering device described above is located between the unwinding device and the winding device along the travel direction;

[0050] A powder impregnation apparatus is located between a powder application device and a winding device along the travel direction. The powder impregnation apparatus includes an upper electrode component, a lower electrode component, and an AC power supply assembly. The upper electrode component and the lower electrode component are arranged vertically spaced and opposite to each other to define an impregnation channel suitable for the porous substrate to pass through. The upper electrode component and the lower electrode component are connected to the AC power supply assembly to generate an alternating electric field in the impregnation channel, thereby impregnating the aerogel powder into the porous substrate.

[0051] According to the production equipment for aerogel composite materials according to the second aspect of this utility model, after the porous substrate is unwound by the unwinding device, it sequentially passes through a powder application device and a powder impregnation device, and is finally wound up by a winding device. When the porous substrate passes through the powder application device, aerogel powder is applied to the porous substrate and spread. When the porous substrate passes through the powder impregnation device, the aerogel powder and the porous substrate bond under the action of an alternating electric field to form an aerogel composite material. By adopting the above-mentioned technical means, the automated production of aerogel composite materials can be achieved, and the surface flatness and thickness uniformity of the obtained aerogel composite material are better.

[0052] In some embodiments, the production equipment for aerogel composite materials further includes:

[0053] A surface cleaning device, located between the powder impregnation device and the winding device along the travel direction, is used to remove residual aerogel powder on the surface of the porous substrate that is not bonded to the porous substrate.

[0054] According to some embodiments of the present invention, the production equipment for aerogel composite materials can remove aerogel powder that is not bonded to the porous substrate and is left on the surface of the porous substrate by adding a surface cleaning device.

[0055] In some embodiments, the production equipment for aerogel composite materials further includes:

[0056] A powder recovery device includes a collection component and a return component. The collection component is arranged correspondingly to at least one of the powder application device, the powder impregnation device, the surface cleaning device, and the winding device to collect aerogel powder. The return component is connected to the inlet of the hopper component to return the collected aerogel powder to the hopper component.

[0057] According to some embodiments of the aerogel composite material production equipment of this utility model, the aerogel powder that failed to adhere to or bond to the porous substrate during the production process is recovered by the collection component of the powder recovery device, and the collected aerogel powder is returned to the silo component for utilization by the return component. This can improve the utilization rate of aerogel powder, reduce waste, and lower costs. Attached Figure Description

[0058] The following drawings, which illustrate embodiments of the present invention, are incorporated herein as part of the present invention for understanding the invention. The drawings show embodiments of the present invention and their descriptions, serving to explain the principles of the present invention. In the drawings,

[0059] Figure 1 This is a front view of a production equipment for aerogel composite materials according to a preferred embodiment of the present invention;

[0060] Figure 2 for Figure 1 A top view of the production equipment for aerogel composite materials shown;

[0061] Figure 3 This is a front view of a production apparatus for aerogel composite materials according to another preferred embodiment of the present invention;

[0062] Figure 4 This is a top view of a production apparatus for aerogel composite materials according to another preferred embodiment of the present invention;

[0063] Figure 5 This is a perspective view of a powdering device without a spreading component according to a preferred embodiment of the present invention;

[0064] Figure 6 for Figure 5 The diagram shows a cross-sectional view of a powdering apparatus excluding the spreading components.

[0065] Figure 7 for Figure 6 A three-dimensional view of the perforated plate in the image;

[0066] Figure 8 A perspective view of a spreading component according to a preferred embodiment of the present invention;

[0067] Figure 9 for Figure 8 A three-dimensional view of the scraper in the middle;

[0068] Figure 10 This is a schematic diagram showing the connection between the electrode assembly and the AC power supply assembly according to a preferred embodiment of the present invention.

[0069] Figure 11 for Figure 10 A schematic diagram of the upper electrode component in the diagram; and

[0070] Figure 12 for Figure 10 and Figure 11 A schematic diagram of the structure of the electrical insulating shell.

[0071] Explanation of reference numerals in the attached figures:

[0072] 100: Unwinding device; 101: First unwinding guide roller

[0073] 102: Second unwinding guide roller; 110: Powdering device

[0074] 111: Feeding assembly; 111a: Feed guide component

[0075] 112: Hopper assembly 112a: Hopper

[0076] 112a1: Inlet 112a2: Outlet

[0077] 112a3: Compartment; 112b: Perforated plate

[0078] 112b1: Feed passage; 112c: Agitator component

[0079] 113: Powder sieving assembly; 113a: Screen component

[0080] 113b: First reciprocating transmission component; 113c: First reciprocating drive component

[0081] 114: Spreading Component 114a: Support Platform

[0082] 114b: Scraper 114b1: First plate section

[0083] 114b11: First bend; 114b12: First connecting hole

[0084] 114b2: Second plate section; 114b21: Second bending section

[0085] 114b22: Second connecting hole; 114b3: Clamp.

[0086] 114b4: Middle plate section; 114b41: Third connecting hole

[0087] 114c: First spacing adjustment component; 114c1: First support column

[0088] 114c2: First support member; 114c3: First connector

[0089] 114c4: First bolt; 114d: Second spacing adjustment component

[0090] 114d1: Second pillar; 114d2: Second support component

[0091] 114d3: Second connector; 114d4: Second bolt

[0092] 114e: Third spacing adjustment component; 114e1: Third support column

[0093] 114e2: Third support member; 114e3: Third connector

[0094] 114e4: Third bolt; 115: Frame

[0095] 120: Powder impregnation device; 121: Electrode assembly

[0096] 121a: Upper electrode component; 121b: Lower electrode component

[0097] 121c: Impregnation channel; 122: Electrically insulating shell

[0098] 122a: First shell portion; 122b: Second shell portion

[0099] 122c: Receiving cavity; 123: Electrode plate

[0100] 124: AC power supply assembly 124a: AC power supply

[0101] 124b: Transformer; 130: Surface cleaning device

[0102] 131: Cleaning brush roller; 140: Rewinding device

[0103] 141: First take-up guide roller; 142: Second take-up guide roller

[0104] 151: First recovery device; 151a: First collection assembly

[0105] 152: Second recovery device; 152a: Second collection assembly

[0106] 152b: Third collection component; 161: Porous substrate

[0107] 162: Aerogel powder; 170: Feeding device

[0108] D1: Direction of travel; D2: Perpendicular direction

[0109] D3: Lateral direction; D4: Direction of travel trajectory extension. Detailed Implementation

[0110] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that embodiments of the present invention may be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with embodiments of the present invention.

[0111] To fully understand the embodiments of this utility model, a detailed structure will be presented in the following description. Obviously, the implementation of the embodiments of this utility model is not limited to the specific details familiar to those skilled in the art.

[0112] It should be understood that the terminology used herein is intended only to describe particular embodiments and is not intended to limit the scope of the invention. The singular forms “a,” “an,” and “the” are also intended to include the plural forms unless the context clearly indicates otherwise. When the terms “comprising” and / or “including” are used in this specification, they indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof.

[0113] The ordinal numbers such as "first" and "second" used in this utility model are merely identifiers and do not have any other meaning, such as a specific order. Furthermore, for example, the term "first component" does not imply the existence of a "second component," and the term "second component" does not imply the existence of a "first component." It should be noted that the terms "upper," "lower," "front," "rear," "left," "right," "inner," "outer," and similar expressions used in this utility model are for illustrative purposes only and are not intended to be limiting.

[0114] The terms “center,” “parallel,” “perpendicular,” “aligned,” and “symmetrical” used in this invention do not have to be precise, but can include typical engineering tolerances.

[0115] The specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings, which show representative embodiments of the present invention and are not intended to limit the present invention.

[0116] See Figures 1 to 12This invention provides an aerogel composite material production apparatus. The aerogel composite material production apparatus is used to automate the production of aerogel composite materials. The apparatus may include an unwinding device 100, a powder application device 110, a powder impregnation device 120, and a winding device 140 arranged sequentially along the travel direction D1 of a porous substrate 161. The unwinding device 100 is used to unwind the rolled porous substrate 161. The winding device 140 is arranged at intervals from the unwinding device 100 along the travel direction D1 and is used to wind the porous substrate 161 impregnated with aerogel powder 162 and to pull the porous substrate 161 along the travel direction D1. The extension direction of the porous substrate 161 on the aerogel composite material production apparatus may be referred to as the travel trajectory extension direction D4. At least a portion of this travel trajectory extension direction D4 is parallel to the travel direction D1. The powder application device 110 is located between the unwinding device 100 and the winding device 140 along the travel direction D1. In other words, the powder application device 110 is located downstream of the unwinding device 100 along the travel direction D1. The powder application device 110 is used to apply aerogel powder 162 to the surface of the porous substrate 161 and to uniformly spread the aerogel powder 162 on the surface of the porous substrate. The powder impregnation device 120 is located between the powder application device 110 and the winding device 140 along the travel direction D1. The powder impregnation device 120 includes an upper electrode member 121a, a lower electrode member 121b, and an AC power supply assembly 124. The upper electrode member 121a and the lower electrode member 121b are spaced apart and arranged opposite each other in the vertical direction D2 to define an impregnation channel 121c suitable for the passage of the porous substrate 161. The upper electrode member 121a and the lower electrode member 121b are connected to the AC power supply assembly 124 to generate an alternating electric field in the impregnation channel 121c, thereby impregnating the aerogel powder 162 into the porous substrate 161.

[0117] According to the aerogel composite material production equipment of the present invention, after the unwinding device 100 unwinds the roll of porous substrate 161, it sequentially passes through the powdering device 110 and the powder impregnation device 120, and is finally wound up by the winding device 140. When the porous substrate 161 passes through the powdering device 110, aerogel powder 162 is applied to the porous substrate 161 and spread. When the porous substrate 161 passes through the powder impregnation device 120, the aerogel powder 162 and the porous substrate 161 bond under the action of an alternating electric field to form an aerogel composite material. By adopting the above-mentioned technical means, the automated production of aerogel composite materials can be achieved, and the surface flatness and thickness uniformity of the obtained aerogel composite material are better. In addition, the impregnation rate of aerogel powder 162 on the porous substrate 161 can be improved.

[0118] See Figure 1 , Figure 3 as well as Figure 4In some embodiments, the unwinding device 100 includes a pivot, such as an air shaft, for mounting a rolled porous substrate 161, and a first unwinding guide roller 101 and a second unwinding guide roller 102 for guiding the movement direction of the unwound porous substrate 161. The first unwinding guide roller 101 and the second unwinding guide roller 102 are arranged sequentially along the travel path extension direction D4. The first unwinding guide roller 101 is closer to the pivot than the second unwinding guide roller 102.

[0119] Accordingly, the winding device 140 includes another shaft, such as an air shaft for winding the porous substrate 161, and a first winding guide roller 141 and a second winding guide roller 142 for guiding the movement direction of the porous substrate 161 to be wound. The first winding guide roller 141 and the second winding guide roller 142 are arranged sequentially along the travel path extension direction D4. The first winding guide roller 141 is further away from the other shaft than the second winding guide roller 142.

[0120] The distance between the second unwinding guide roller 102 and the first winding guide roller 141 in the vertical direction D2 is zero or close to zero. That is, the second unwinding guide roller 102 and the first winding guide roller 141 are at the same or close to the same height in the vertical direction D2. The travel trajectory D4 of the porous substrate 161 located between the second unwinding guide roller 102 and the first winding guide roller 141 is parallel to or nearly parallel to the travel direction D1.

[0121] Alternatively, the unwinding device 100 and the winding device 140 can be implemented with reference to relevant equipment in the prior art.

[0122] In some embodiments, the powder application device 110 and the powder impregnation device 120 can be implemented as a single unit. In application scenarios where the powder application device 110 and the powder impregnation device 120 are implemented as a single unit, the combination of the powder application device 110 and the powder impregnation device 120 can be referred to as a powder application and impregnation unit.

[0123] See Figures 1 to 4 In some embodiments, the production equipment for aerogel composite materials may further include a surface cleaning device 130. The surface cleaning device 130 is located between the powder impregnation device 120 and the winding device 140 along the travel direction D1 of the porous substrate 161. That is, the surface cleaning device 130 is located downstream of the powder impregnation device 120 along the travel direction D1. The surface cleaning device 130 is used to remove residual aerogel powder 162 on the surface of the porous substrate 161 that is not bonded to the porous substrate 161.

[0124] According to some embodiments of the present invention, the production equipment for aerogel composite materials can remove aerogel powder 162 that is residual on the surface of the porous substrate 161 and not bonded to the porous substrate 161 by adding a surface cleaning device 130.

[0125] See Figure 1 , Figure 3 as well as Figure 4 Optionally, the surface cleaning device 130 may include a cleaning brush roller 131. The cleaning brush roller 131 is rotatably arranged about an axis parallel to the transverse direction D3. As the porous substrate 161 passes over the cleaning brush roller 131, the cleaning brush roller 131 rotates passively or actively and removes the surface of the porous substrate 161 to achieve the purpose of removing the aerogel powder 162. The active rotation of the cleaning brush roller 131 may be powered by a drive structure such as a motor.

[0126] See Figure 1 In some embodiments, the production equipment for aerogel composite materials may further include a powder recovery device. The powder recovery device may include a collection assembly and a return assembly (not shown). The collection assembly is arranged corresponding to at least one of the powder application device 110, the powder impregnation device 120, the surface cleaning device 130, and the winding device 140 to collect aerogel powder 162. The return assembly is connected to the inlet 112a1 of the hopper 112a assembly 112 to return the collected aerogel powder 162 to the hopper 112a assembly 112.

[0127] According to some embodiments of the aerogel composite material production equipment of this utility model, the aerogel powder 162 that failed to adhere to or bond to the porous substrate 161 during the production process is recovered by the collection component of the powder recovery device, and the collected aerogel powder 162 is returned to the silo 112a component 112 for utilization by the return component. This can improve the utilization rate of aerogel powder 162, reduce waste, and lower costs.

[0128] See Figures 1 to 3 Optionally, the powder recovery device may include a first recovery device 151 and a second recovery device 152. The first recovery device 151 is connected to the powder application device 110. The second recovery device 152 is connected to the powder impregnation device 120 and the surface cleaning device 130.

[0129] Furthermore, the first recovery device 151 may include a first collection component 151a. The first collection component 151a is connected to the powder application device 110 and is used to collect aerogel powder 162 that has detached from the porous substrate 161 at the powder application device 110. The first collection component 151a includes, for example, a first collection shroud member, a first suction member, and tubing. The first suction member provides suction power, which is transmitted via tubing to the first collection shroud member, allowing the first collection shroud member to receive the aerogel powder 162. The first collection shroud member may be configured in a bell shape. The first collection shroud member may be disposed below the powder impregnation device 120. The first collection shroud member may also be disposed on one or both sides of the powder application device 110 in the lateral direction D3.

[0130] The second collection device 152 may include a second collection assembly 152a. The second collection assembly 152a is connected to the powder impregnation device 120 and is used to collect aerogel powder 162 that can detach from the porous substrate 161 at the powder impregnation device 120. The second collection assembly 152a may include, for example, a second collection shroud member, a second suction member, and tubing. The second suction member provides suction power, which is transmitted via tubing to the second collection shroud member, causing the second collection shroud member to receive the aerogel powder 162. The second collection shroud member may be configured in a bell shape. The second collection shroud member may be disposed below the powder impregnation device 120. The second collection shroud member may also be disposed on one or both sides of the powder impregnation device 120 in the lateral direction D3.

[0131] The second recovery device 152 may include a third collection component 152b. The third collection component 152b is connected to the surface cleaning device 130 and is used to collect aerogel powder 162 that can detach from the porous substrate 161 at the surface cleaning device 130. The third collection component 152b includes, for example, a third collection shroud member, a third suction member, and tubing. The third suction member provides suction power, which is transmitted via tubing to the third collection shroud member, allowing the third collection shroud member to receive the aerogel powder 162. The third collection shroud member may be configured in a bell shape. Two sets of third collection shroud members may be provided. The two sets of third collection shroud members may be arranged opposite each other on both sides of the surface cleaning device 130.

[0132] See below for reference. Figures 1 to 9 The powdering apparatus 110 according to an embodiment of the present invention will be described.

[0133] like Figures 5 to 8As shown, an embodiment of this utility model provides a powder application device 110. The powder application device 110 may include a hopper 112a assembly 112, a powder sieving assembly 113, and a spreading assembly 114. The hopper 112a assembly 112 is used to contain aerogel powder 162. The lower part of the hopper 112a assembly 112 is provided with a discharge port 112a2 for discharging the contained aerogel powder 162. The powder sieving assembly 113 is located below the hopper 112a assembly 112. The powder sieving assembly 113 is aligned with the discharge port 112a2 in the vertical direction D2, and is used to receive the aerogel powder 162 discharged from the hopper 112a assembly 112 and apply it to the upper surface of the porous substrate 161. The spreading assembly 114 is arranged downstream of the powder sieving assembly 113 along the traveling direction D1 of the porous substrate 161. The spreading assembly 114 may include a scraper 114b adapted to be disposed above the porous substrate 161 for spreading aerogel powder 162 applied to the upper surface of the porous substrate 161.

[0134] According to an embodiment of the present invention, the powder application device 110 first receives and discharges aerogel powder 162 through the hopper 112a component 112. Then, the powder sieving component 113 receives the aerogel powder 162 discharged from the hopper 112a component 112 and applies it to the upper surface of the porous substrate 161, so that the aerogel powder 162 is initially dispersed in the porous substrate 161. Next, the spreading component 114 performs spreading treatments such as spreading, unfolding, and scraping on the aerogel powder 162 applied to the porous substrate 161, so that the aerogel powder 162 is more evenly distributed in the porous substrate 161, and helps to make the thickness of the aerogel powder 162 in various parts of the porous substrate 161 more uniform and consistent. By adopting the above technical means, the uniformity of the distribution of aerogel powder 162 in the porous substrate 161 can be improved, thereby improving the surface flatness and thickness consistency of the obtained aerogel composite material.

[0135] like Figure 5 and Figure 6 As shown, in some embodiments, the powder sieving assembly 113 may include a screen member 113a, a first reciprocating transmission member 113b, and a first reciprocating drive member 113c. The screen member 113a is aligned with the discharge port 112a2 in the vertical direction D2. The screen member 113a is movably disposed in a transverse direction D3, which is transverse to the travel direction D1. The first reciprocating drive member 113c is connected to the screen member 113a via the first reciprocating transmission member 113b to drive the screen member 113a to reciprocate in the transverse direction D3, and to apply the aerogel powder 162 to the upper surface of the porous substrate 161 while the screen member 113a is reciprocating.

[0136] According to some embodiments of the present invention, the powder application device 110 can drive the screen component 113a to move in the transverse direction D3 via the first reciprocating drive component 113c and the first reciprocating transmission component 113b. This allows the screen component 113a to apply aerogel powder 162 to the upper surface of the porous substrate 161 during its reciprocating motion, thereby distributing the aerogel powder 162 along the transverse direction D3 on the upper surface of the porous substrate 161 and initially achieving uniform distribution of the aerogel powder 162 on the porous substrate 161. Simultaneously, this helps improve the spreading efficiency and effect of the spreading component 114 on the aerogel powder 162, reduces the difficulty of spreading the aerogel powder 162 by the spreading component 114, and thus facilitates the simplification of the structure of the spreading component 114.

[0137] Optionally, the first reciprocating drive member 113c may be a motor. The motor is fixed to the frame 115. The first reciprocating transmission member 113b may include a disk, a connecting rod, a guide rod, and a guide sleeve. The disk is fixedly connected to the output shaft of the motor so that it can be actuated by the output shaft of the motor. The disk is rotatably connected to one end of the connecting rod so that the connecting rod can rotate relative to the disk. The rotatable connection between the disk and the connecting rod is offset from the axis of the output shaft of the motor. The other end of the connecting rod is rotatably connected to one end of the guide rod. The other end of the guide rod is fixedly connected to the screen member 113a. The screen member 113a includes a screen. The guide sleeve is fitted over the guide rod and fixed to the frame 115 to guide the movement direction of the guide rod in the transverse direction D3. When the motor starts, the disk rotates, the connecting rod swings and alternately pushes and pulls the guide rod, causing the guide rod to reciprocate linearly in the transverse direction D3, thereby causing the screen member 113a to reciprocate in the transverse direction D3.

[0138] In other embodiments, the disk may be replaced by a rod-like structure such as a crank.

[0139] See Figure 5 and Figure 6 In some embodiments, the hopper 112a assembly 112 may include a hopper 112a, a perforated plate 112b, and an agitator 112c. The hopper 112a has a feed inlet 112a1 at its top and a discharge outlet 112a2 at its bottom. The discharge outlet 112a2 extends in a transverse direction D3, which is transverse to the travel direction D1. The perforated plate 112b has multiple feed holes 112b1. The specific distribution of each feed hole 112b1 on the perforated plate 112b can be customized according to actual production needs. The perforated plate 112b is connected to the hopper 112a at the discharge outlet 112a2. The agitator 112c is movably disposed in the chamber 112a3 of the hopper 112a and is used to agitate the aerogel powder 162 located above the perforated plate 112b.

[0140] According to some embodiments of the present invention, the powder application device 110 can receive and contain the aerogel powder 162 to be applied using a hopper 112a. The perforated plate 112b slows down the discharge rate of the aerogel powder 162 from the outlet 112a2 and allows the aerogel powder 162 to be discharged in a more dispersed manner, thereby facilitating the distribution of the aerogel powder 162 on the sieving assembly 113 and preventing rapid local accumulation of the aerogel powder 162 on the sieving assembly 113. Simultaneously, the stirring member 112c agitates the aerogel powder 162 in the hopper 112a to prevent the aerogel powder 162 from being blocked by the through holes 112b1 of the perforated plate 112b, thus improving the uniformity of the aerogel powder 162 distribution on the perforated plate 112b and further facilitating the more uniform release of the aerogel powder 162 onto the sieving assembly 113.

[0141] See Figure 6 In some optional embodiments, the agitating member 112c may include a brush roller. The brush roller is rotatably disposed in the chamber 112a3 about a rotation axis parallel to the transverse direction D3. The hopper 112a assembly 112 may also include an agitation drive member (not shown). The agitation drive member is connected to the brush roller to drive the brush roller to rotate. The agitation drive member may specifically be a motor, or a drive structure composed of a motor, reducer, etc., as long as it can drive the brush roller to rotate.

[0142] According to some embodiments of the present invention, the powder application device 110 uses the brush roller of the stirring member 112c to stir the aerogel powder 162 in the chamber 112a3, which can increase the contact surface with the aerogel powder 162, thereby improving the stirring efficiency and the fullness of stirring. At the same time, it is also beneficial to further improve the uniformity of the distribution of aerogel powder 162 on the porous plate 112b and the uniformity of aerogel powder 162 on the powder screening component 113.

[0143] Optionally, the brush roller includes a roller body and brush bristles. The brush bristles can be arranged along a certain direction on the surface of the roller body to better facilitate the transverse agitation of the aerogel powder 162, thereby improving the uniformity of the transverse distribution of the aerogel powder 162 in the hopper 112a.

[0144] See Figure 6 In some further embodiments, the perforated plate 112b is detachably connected to the lower part of the hopper 112a.

[0145] According to some embodiments of the powder application device 110 of this utility model, since the perforated plate 112b is detachable, it is convenient to replace or disassemble the perforated plate 112b. For example, a perforated plate 112b with different pore sizes can be selected according to the particle size of the aerogel powder 162, the required discharge speed, the damage condition, etc., or the perforated plate 112b can be removed when cleaning is required.

[0146] Alternatively, the perforated plate 112b may be a perforated plate made of a metal sheet such as stainless steel sheet by punching.

[0147] See Figure 6 and Figure 7 In some further embodiments, the perforated plate 112b is located in the chamber 112a3 and extends in the circumferential direction of the brush roller. That is, the perforated plate 112b is an arc-shaped bent plate.

[0148] According to some embodiments of the present invention, the powder application device 110 is designed to increase the area of ​​the brush roller facing the porous plate 112b, thereby increasing the agitation rate or agitation range of the aerogel powder 162 located on the porous plate 112b, so as to further reduce or avoid the aerogel powder 162 clogging the porous plate 112b.

[0149] In some other embodiments, the brush roller described above can be replaced by a roller with a surface structure such as raised ribs.

[0150] In some other embodiments, the agitator 112c described above may include a toggle structure that is movable in at least one of the lateral direction D3 and the travel direction D1.

[0151] See Figure 5 and Figure 6 In some embodiments, the top of the hopper 112a is provided with a feed inlet 112a1. The feed inlet 112a1 extends in the lateral direction D3. The powdering device 110 may also include a feeding assembly 111. The feeding assembly 111 includes a feeding guide 111a. The lower end of the feeding guide 111a is movably connected to the hopper 112a assembly 112 in the lateral direction D3 at the feed inlet 112a1. The upper end of the feeding guide 111a is adapted to be connected to the feeding device 170 to receive the aerogel powder 162. Those skilled in the art will understand that the feeding device 170 can be any of the prior art conveying equipment capable of conveying powdered or granular materials.

[0152] According to some embodiments of the present invention, the powdering device 110 receives aerogel powder 162 conveyed by the feeding device 170 through the feeding guide 111a of the feeding assembly 111, and guides it from the inlet 112a1 into the hopper 112a while moving in the transverse direction D3. This allows the aerogel powder 162 to be distributed in the transverse direction D3 within the hopper 112a, thereby improving the uniformity of the aerogel powder 162 distribution in the transverse direction D3 within the hopper 112a.

[0153] Optionally, the feed guide 111a can be a tube made of materials such as plastic or metal. The upper end of the feed guide 111a has a connection structure adapted to connect to the feeding device 170. The lower end of the feed guide 111a extends into the chamber 112a3 of the hopper 112a or into the feed inlet 112a1 via the feed port 112a1 to prevent the aerogel powder 162 from falling outside the hopper 112a.

[0154] In some embodiments, the feeding assembly 111 may further include a second reciprocating transmission member (not shown) and a second reciprocating drive member (not shown). One end of the second reciprocating transmission member is connected to the feeding guide member 111a. The second reciprocating drive member is connected to the other end of the second reciprocating transmission member to drive the feeding guide member 111a to move in the lateral direction D3 via the second reciprocating transmission member.

[0155] According to some embodiments of the present invention, the powder application device 110 drives the feeding guide 111a to reciprocate in the lateral direction D3 via a second reciprocating drive member and a second reciprocating transmission member. This enables the aerogel powder 162 to be guided into the chamber 112a3 of the hopper 112a and distributed laterally within the chamber 112a3. The reciprocating motion of the feeding guide 111a requires no manual intervention, reducing labor intensity and improving production efficiency.

[0156] See Figure 8 and Figure 9 In some embodiments, the spreading assembly 114 may further include a support platform 114a. The support platform 114a is used to support the porous substrate 161. The support platform 114a is located below the scraper 114b. The support platform 114a is spaced apart from the scraper 114b in the vertical direction D2. The scraper 114b may include a first plate portion 114b1 and a second plate portion 114b2 disposed opposite to each other. The first plate portion 114b1 and the second plate portion 114b2 are arranged intersectingly to form a clamp 114b3. The clamp 114b3 faces away from the hopper 112a assembly 112 in the travel direction D1.

[0157] According to some embodiments of the present invention, the powder application device 110 provides support for the porous substrate 161 that passes through the spreading component 114 by setting a support platform 114a below the scraper 114b, so that the porous substrate 161 located below the scraper 114b is more flat, thereby improving the uniformity of the spreading of aerogel powder 162 by the scraper 114b and ensuring the consistency of the thickness of each part of the aerogel powder 162.

[0158] Optionally, the support platform 114a can be constructed as a plate-like structure with a horizontal upper surface. The support platform 114a is fixed to the frame 115.

[0159] Continue reading Figure 8 and Figure 9 In some further embodiments, the scraper 114b may also include an intermediate plate portion 114b4. The two ends of the intermediate plate portion 114b4 along the transverse direction D3 are connected one-to-one to the first plate portion 114b1 and the second plate portion 114b2, so that the overall outer contour of the scraper 114b is V-shaped or other similar shapes when viewed in the vertical direction D2.

[0160] exist Figure 9 In the example shown, the intermediate plate portion 114b4 can be arc-shaped. The center of curvature of the intermediate plate portion 114b4 is located on the side of the intermediate plate portion 114b4 away from the hopper 112a assembly 112. The connection between the intermediate plate portion 114b4 and the first plate portion 114b1 and the second plate portion 114b2 is smoothly transitioned in a tangential manner. Furthermore, the scraper 114b is a one-piece molded plate. For example, the scraper 114b can be made from a metal plate through cutting and bending. Alternatively, the scraper 114b can be made from plastic through injection molding or other processes. Of course, in applications where high precision is not required, the various parts of the scraper 114b can be processed separately and then assembled.

[0161] See Figure 8 In some embodiments, the spreading assembly 114 may further include a spacing adjustment member. The spacing adjustment member is connected between the support platform 114a and the scraper 114b. The spacing adjustment member is operated to change the spacing between the scraper 114b and the support platform 114a in the vertical direction D2.

[0162] According to some embodiments of the present invention, the powder application device 110 is equipped with a spacing adjustment component, which facilitates the adjustment of the spacing between the scraper 114b and the support platform 114a according to production needs, thereby helping to change the thickness of the aerogel powder 162 spread on the porous substrate 161.

[0163] Continue reading Figure 8In some further embodiments, the spacing adjustment members are provided in three sets. The three sets of spacing adjustment members are a first spacing adjustment member 114c, a second spacing adjustment member 114d, and a third spacing adjustment member 114e.

[0164] A first spacing adjustment member 114c is disposed between the end of the first plate portion 114b1 furthest from the intermediate plate portion 114b4 and the support platform 114a. The first spacing adjustment member 114c is used to adjust the spacing between the end of the first plate portion 114b1 furthest from the intermediate plate portion 114b4 and the support platform 114a in the vertical direction D2. The first spacing adjustment member 114c may include a first pillar 114c1, a first support member 114c2, a first connector 114c3, and a first bolt 114c4. The first pillar 114c1 extends in the vertical direction D2 and is fixed to the upper part of the support platform 114a. The first support member 114c2 is connected to the upper part of the first pillar 114c1 and protrudes from the first pillar 114c1 in a direction perpendicular to the vertical direction D2. The portion of the first support member 114c2 protruding from the first pillar 114c1 has a hole for the first bolt 114c4 to pass through. One end of the first connector 114c3 is connected to the first bolt 114c4 and fastened or positioned by a first nut (not shown). The other end of the first connector 114c3 is connected to the end of the first plate portion 114b1 away from the intermediate plate portion 114b4 by means of riveting, bolting, or other methods. The mounting orientation of the first bolt 114c4 is vertical in direction D2. By adjusting the position of the first nut in vertical direction D2 relative to the first bolt 114c4, the positions of the first connector 114c3 and the first plate portion 114b1 in vertical direction D2 relative to the first support 114c1 can be changed. In the illustrated example, the first support 114c1 is a profile. The first support 114c1 has a groove extending along vertical direction D2, the groove having a dovetail or T-shaped cross-section that tapers from the inside out. The first spacing adjustment member 114c may also have another bolt and another nut. The bolt head of the other bolt is located within the groove of the first support 114c1. The other bolt passes through the first connector 114c3 and the first plate portion 114b1 and connects to the other nut. Loosening the other nut changes the position of the first connector 114c3 and the first plate portion 114b1 relative to the first support column 114c1 in the vertical direction D2. Tightening the other nut maintains the position of the first connector 114c3 and the first plate portion 114b1 relative to the first support column 114c1 in the vertical direction D2. It should be noted that since the first connector 114c3 is connected to the first support member 114c2 via the first bolt 114c4 and the first nut, and the first plate portion 114b1 is connected to the first support column 114c1 via the other bolt and the other nut, both the first nut and the other nut need to be rotated and adjusted to achieve the adjustment of the position of the first plate portion 114b1 in the vertical direction D2.

[0165] The second spacing adjustment member 114d is disposed between the end of the second plate portion 114b2 away from the intermediate plate portion 114b4 and the support platform 114a. The second spacing adjustment member 114d is used to adjust the spacing between the end of the second plate portion 114b2 away from the intermediate plate portion 114b4 and the support platform 114a in the vertical direction D2. The second spacing adjustment member 114d may include a second pillar 114d1, a second support member 114d2, a second connector 114d3, and a second bolt 114d4. The second pillar 114d1 extends in the vertical direction D2 and is fixed to the upper part of the support platform 114a. The second support member 114d2 is connected to the upper part of the second pillar 114d1 and protrudes from the second pillar 114d1 in a direction perpendicular to the vertical direction D2. The portion of the second support member 114d2 protruding from the second pillar 114d1 has a hole for the second bolt 114d4 to pass through. One end of the second connector 114d3 is connected to the second bolt 114d4 and fastened or positioned by a second nut (not shown). The other end of the second connector 114d3 is connected to the end of the second plate portion 114b2 away from the intermediate plate portion 114b4 by means of riveting, bolting, or other methods. The installation orientation of the second bolt 114d4 is vertical in direction D2. By adjusting the position of the second nut in vertical direction D2 relative to the second bolt 114d4, the positions of the second connector 114d3 and the second plate portion 114b2 in vertical direction D2 relative to the second support column 114d1 can be changed. In the illustrated example, the second support column 114d1 is a profile. The second support column 114d1 has a groove extending along vertical direction D2, the groove having a dovetail or T-shaped cross-section that tapers from the inside out. The second spacing adjustment member 114d may also have another bolt and another nut. The bolt head of this other bolt is located within the groove of the second support column 114d1. The other bolt passes through the second connector 114d3 and the second plate portion 114b2 and connects to the other nut. Loosening the other nut changes the position of the second connector 114d3 and the second plate portion 114b2 relative to the second support column 114d1 in the vertical direction D2. Tightening the other nut maintains the position of the second connector 114d3 and the second plate portion 114b2 relative to the second support column 114d1 in the vertical direction D2. It should be noted that since the second connector 114d3 is connected to the second support member 114d2 via the second bolt 114d4 and the second nut, and the second plate portion 114b2 is connected to the second support column 114d1 via another bolt and another nut, both the second nut and the other nut need to be rotated for adjustment of the position of the second plate portion 114b2 in the vertical direction D2. The second support column 114d1 and the first support column 114c1 are spaced apart in the horizontal direction D3. The distance between the second pillar 114d1 and the first pillar 114c1 in the lateral direction D3 is greater than the width of the porous substrate 161.

[0166] A third spacing adjustment member 114e is disposed between the intermediate plate portion 114b4 and the support platform 114a. The third spacing adjustment member 114e is used to adjust the spacing between the intermediate plate portion 114b4 and the support platform 114a in the vertical direction D2. The third spacing adjustment member 114e may include a third pillar 114e1, a third support member 114e2, a third connector 114e3, and a third bolt 114e4. The third pillar 114e1 extends in the vertical direction D2 and is fixed to the upper part of the support platform 114a. Two third pillars 114e1 are provided. The two third pillars 114e1 are spaced apart on both sides of the intermediate plate portion 114b4 in the transverse direction D3. The spacing between the two third pillars 114e1 in the transverse direction D3 is greater than the width of the porous substrate 161. The third support member 114e2 is connected to the upper part of the third pillar 114e1. The third support member 114e2 has a hole for the third bolt 114e4 to pass through. One end of the third connector 114e3 is connected to the third bolt 114e4 and fastened or positioned by a third nut (not shown). The other end of the third connector 114e3 is connected to the intermediate plate portion 114b4 by means of riveting, bolting, or other methods. The installation orientation of the third bolt 114e4 is vertical in direction D2. By adjusting the position of the third nut in vertical direction D2 relative to the third bolt 114e4, the positions of the third connector 114e3 and the intermediate plate portion 114b4 in vertical direction D2 relative to the third support 114e1 can be changed. In the illustrated example, the third support 114e1 is a profile. The third spacing adjustment member 114e may also have another bolt and another nut. This other bolt passes through the third connector 114e3 and the intermediate plate portion 114b4 and is connected to the other nut to fasten the third connector 114e3 to the intermediate plate portion 114b4.

[0167] See Figure 8 and Figure 9 To connect the first connector 114c3 to the first plate portion 114b1, a first bent portion 114b11 extending in the transverse direction D3 is provided at the end of the first plate portion 114b1 away from the intermediate plate portion 114b4. The first bent portion 114b11 is arranged intersecting the first plate portion 114b1. The first bent portion 114b11 has a first connecting hole 114b12. The first connecting hole 114b12 is used to pass a bolt. The bolt passes through the first connector 114c3 and the first bent portion 114b11 to connect the first connector 114c3 and the first bent portion 114b11.

[0168] Continue reading Figure 8 and Figure 9To connect the second connector 114d3 to the second plate portion 114b2, a second bent portion 114b21 extending in the transverse direction D3 is provided at one end of the second plate portion 114b2 away from the intermediate plate portion 114b4. The second bent portion 114b21 is arranged intersecting with the second plate portion 114b2. The second bent portion 114b21 has a second connecting hole 114b22. The second connecting hole 114b22 is used to pass a bolt. The bolt passes through the second connector 114d3 and the second bent portion 114b21 to connect the second connector 114d3 and the second bent portion 114b21.

[0169] See also Figure 8 and Figure 9 To facilitate the connection between the third connector 114e3 and the intermediate plate portion 114b4, the intermediate plate portion 114b4 is provided with a third connecting hole 114b41. The third connecting hole 114b41 is used to pass a bolt through it. The bolt passes through the third connector 114e3 and the intermediate plate portion 114b4 to connect the third connector 114e3 and the intermediate plate portion 114b4.

[0170] See below for reference. Figures 1 to 4 as well as Figures 10 to 12 The powder impregnation apparatus 120 according to an embodiment of the present invention will be described.

[0171] This invention provides a powder impregnation apparatus 120 for applying an alternating electric field to a porous substrate 161 to which aerogel powder 162 is attached. The powder impregnation apparatus 120 may include m electrode assemblies 121 and n AC power supply assemblies 124. m ≥ 2. n ≥ 2. Both m and n are positive integers. The electrode assemblies 121 are arranged sequentially along the travel direction D1 of the porous substrate 161. Each electrode assembly 121 may include an upper electrode member 121a and a lower electrode member 121b. The upper electrode member 121a and the lower electrode member 121b are spaced apart and arranged opposite each other in the vertical direction D2. An impregnation channel 121c suitable for the porous substrate 161 to pass through is defined between the upper electrode member 121a and the lower electrode member 121b. Each of the n AC power supply assemblies 124 is connected to a different electrode assembly 121 to generate an alternating electric field in the impregnation channel 121c of each electrode assembly 121.

[0172] According to an embodiment of the present invention, the powder impregnation apparatus 120 is provided with at least two electrode assemblies 121 arranged sequentially along the travel direction D1, and at least two AC power supply assemblies 124 are provided, with each AC power supply assembly 124 connected to a different electrode assembly 121. This allows the alternating electric field of one part of the electrode assembly 121 to be independently controllable relative to the alternating electric field of the other part of the electrode assembly 121. This facilitates adjusting the impregnation efficiency and impregnation rate of the aerogel powder 162 on the porous substrate 161 according to production needs, and prevents production from being affected by a failure of the AC power supply assemblies 124 shared by all the electrode assemblies 121.

[0173] In some embodiments, AC power supply component 124 is configured to provide alternating voltage. At least two AC power supply components 124 provide different alternating voltages.

[0174] According to some embodiments of the present invention, the powder impregnation apparatus 120 sets the alternating voltages provided by at least two AC power supply components 124 to be different, thereby making the alternating electric fields of at least a portion of the electrode components 121 different from each other, which helps to adjust the impregnation rate of aerogel powder 162 on porous substrate 161 in stages with different alternating electric fields according to production needs.

[0175] See Figure 1 , Figure 3 as well as Figure 10 Optionally, the AC power supply assembly 124 may include an AC power supply 124a and two transformers 124b. The AC power supply 124a is electrically connected to the upper electrode member 121a via one transformer 124b. The AC power supply 124a is electrically connected to the lower electrode member 121b via the other transformer 124b. When the AC power supply 124a supplies power to both the upper electrode member 121a and the lower electrode member 121b, an alternating electric field is generated between the upper electrode member 121a and the lower electrode member 121b.

[0176] like Figure 4 As shown, in some embodiments, at least two adjacent electrode assemblies 121 are at least partially offset in a lateral direction D3 that is transverse to the direction of travel D1. The lateral direction D3 is perpendicular to both the direction of travel D1 and the vertical direction D2.

[0177] According to some embodiments of the present invention, the powder impregnation apparatus 120 can alternately apply an alternating electric field to different portions of the porous substrate 161 along the transverse direction D3 to achieve the corresponding impregnation purpose. Simultaneously, it helps to broaden the distribution range of the alternating electric field in the transverse direction D3 and also facilitates a reduction in the size of a single electrode assembly 121.

[0178] See Figure 1 and Figure 3In some embodiments, m = n. n AC power supply components 124 are connected one-to-one with m electrode components 121.

[0179] According to some embodiments of the present invention, in the powder impregnation apparatus 120, each AC power supply component 124 is arranged in a one-to-one correspondence with each electrode component 121, ensuring that the alternating voltage of each electrode component 121 can be independently provided and controlled.

[0180] See Figure 10 In some embodiments, the upper electrode member 121a and the lower electrode member 121b may each include an electrically insulating shell 122 and an electrode plate 123. The electrically insulating shell 122 is constructed as a shell made of electrically insulating material. A receiving cavity 122c is formed inside the electrically insulating shell 122. The electrode plate 123 is housed in the receiving cavity 122c. The electrode plate 123 is electrically connected to the AC power supply assembly 124. The thickness direction of the electrode plate 123 is parallel to the vertical direction D2.

[0181] According to some embodiments of the present invention, the powder impregnation apparatus 120 surrounds the electrode plate 123 with an electrically insulating shell, thereby achieving insulation between the electrode plate 123 and other adjacent structures and improving electrical safety. Since the thickness direction of the electrode plate 123 is parallel to the vertical direction D2, space in the vertical direction D2 can be saved, thus improving the compactness of the powder impregnation apparatus 120 structure in the vertical direction D2 and reducing the overall size of the powder impregnation apparatus 120 in the vertical direction D2.

[0182] In some embodiments, the distance between the electrode plate 123 of the upper electrode member 121a and the electrode plate 123 of the lower electrode member 121b is a spacing distance. The spacing distances of at least two electrode assemblies 121 are not the same.

[0183] According to some embodiments of the present invention, the powder impregnation apparatus 120 can provide alternating electric fields with different electric field strengths in at least two electrode assemblies 121 by setting the interval distance between at least two electrode assemblies 121 to be different.

[0184] See Figures 10 to 12 In some embodiments, the electrical insulating shell 122 may include a first shell portion 122a and a second shell portion 122b. The second shell portion 122b is located along the vertical direction D2 on the side of the first shell portion 122a near the impregnation channel 121c. The second shell portion 122b is connected to the first shell portion 122a. The second shell portion 122b and the first shell portion 122a enclose a receiving cavity 122c.

[0185] According to some embodiments of the powder impregnation apparatus 120 of this utility model, the electrically insulating shell 122 is formed by splicing together a first shell portion 122a and a second shell portion 122b, which facilitates the separate manufacturing of the first shell portion 122a and the second shell portion 122b, and helps to improve the manufacturing accuracy and manufacturing flexibility of the first shell portion 122a and the second shell portion 122b. At the same time, it is beneficial to improve the production efficiency of the upper electrode component 121a and the lower electrode component 121b.

[0186] In some further embodiments, the first shell portion 122a is constructed to be made of tempered glass.

[0187] According to some embodiments of the present invention, the powder impregnation apparatus 120, by making the first shell portion 122a of tempered glass, can improve the structural strength of the first shell portion 122a while achieving electrical insulation, so as to be suitable for connection to the frame 115 and other structures, and is beneficial as a support structure or load-bearing structure for the upper electrode component 121a and the lower electrode component 121b.

[0188] In other embodiments, the first shell portion 122a may also be made of one of the following materials: ordinary glass, borosilicate glass, corundum, ceramic, etc.

[0189] In some embodiments, the second shell portion 122b is constructed using one of quartz glass, corundum, or ceramic.

[0190] According to some embodiments of the present invention, the powder impregnation apparatus 120, by making the second shell portion 122b of one of quartz glass, corundum, or ceramic, is able to achieve electrical insulation while being suitable for the electrode plate 123 to apply an electric field to the impregnation channel 121c.

[0191] In some preferred embodiments, the second shell portion 122b is constructed of quartz glass. The higher the purity of the quartz glass, the better.

[0192] See Figures 10 to 12 In some embodiments, the dimension of the first shell portion 122a in the vertical direction D2 is larger than the dimension of the second shell portion 122b in the vertical direction D2.

[0193] According to some embodiments of the present invention, the powder impregnation apparatus 120 can enhance the strength of the first housing portion 122a, and at the same time help the electrode plate 123 to apply an electric field to the impregnation channel 121c via the second housing portion 122b.

[0194] In some embodiments, each electrode assembly 121 has an upper electrode member 121a and a lower electrode member 121b. The upper electrode member 121a has an electrode plate 123. Correspondingly, the lower electrode member 121b also has an electrode plate 123. The electrode plates 123 of the upper electrode member 121a and the lower electrode member 121b have facing surfaces that face each other. The areas of the facing surfaces of at least two electrode assemblies 121 are not the same.

[0195] According to some embodiments of the present invention, the powder impregnation apparatus 120 can provide alternating electric fields with different electric field strengths in at least two electrode assemblies 121 by setting the areas of the opposing surfaces of at least two electrode assemblies 121 to be different from each other.

[0196] In some embodiments, the electrode plate 123 of the upper electrode member 121a and the electrode plate 123 of the lower electrode member 121b have facing surfaces that face each other. The facing surfaces of each electrode assembly 121 have the same area. This facilitates standardized manufacturing and installation using the same or similar assembly methods. Consequently, it helps to reduce the manufacturing and installation difficulties of each electrode assembly 121.

[0197] See below for reference. Figures 1 to 12 The powder application and impregnation unit according to an embodiment of the present invention and the production equipment for aerogel composite materials having the powder application and impregnation unit will be described.

[0198] An embodiment of this utility model provides a powder application and impregnation unit. The powder application and impregnation unit may include the powder application device 110 and the powder impregnation device 120 described above. The powder application device 110 is used to apply aerogel powder 162 to the upper surface of a porous substrate 161. The powder impregnation device 120 is arranged downstream of the powder application device 110 along the traveling direction D1 of the porous substrate 161 to apply an alternating electric field to the porous substrate 161 with aerogel powder 162 attached in the impregnation channel 121c.

[0199] The powder application and impregnation unit according to the embodiments of this utility model facilitates the production, sale, and installation of the powder application device 110 and the powder impregnation device 120 as a whole in application scenarios, and is conducive to more convenient transformation and upgrading of existing production equipment.

[0200] See Figure 3 The production equipment for aerogel composite materials provided according to some embodiments of the present invention includes at least two powder application and impregnation units. Each powder application and impregnation unit is arranged sequentially along the travel direction D1. This results in the powder application device 110 and the powder impregnation device 120 being arranged in an overlapping manner along the travel direction D1.

[0201] According to some embodiments of the aerogel composite material production equipment of this utility model, by setting at least two powder application and impregnation units, it is possible to alternately apply aerogel powder 162 to a porous substrate 161 and impregnate the porous substrate 161 with aerogel powder 162, which helps to improve the impregnation rate of aerogel powder 162 in the porous substrate 161. At the same time, it is also convenient to achieve the purpose of impregnating aerogel powder 162 of different particle sizes in different powder application and impregnation units, so as to accommodate the production needs of more aerogel composite materials.

[0202] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of the invention. Terms such as “set” appearing herein can refer to either a component being directly attached to another component or a component being attached to another component via an intermediary. A feature described in one embodiment may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.

[0203] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit this utility model to the described embodiments. Those skilled in the art will understand that many more variations and modifications can be made based on the teachings of this utility model, and all such variations and modifications fall within the scope of protection claimed by this utility model.

Claims

1. A powder application device for applying aerogel powder to a surface of a porous substrate, characterized by, The powdering device includes: A hopper assembly for containing aerogel powder, wherein the lower part of the hopper assembly is provided with a discharge port for discharging the contained aerogel powder; A sieving assembly, located below the hopper assembly and vertically aligned with the outlet, is used to receive aerogel powder discharged from the hopper assembly and apply it to the upper surface of the porous substrate; and A spreading assembly is arranged downstream of the powder sieving assembly along the travel direction of the porous substrate. The spreading assembly includes a scraper adapted to be disposed above the porous substrate for spreading aerogel powder applied to the upper surface of the porous substrate.

2. The powdering device according to claim 1, characterized in that, The powder screening component includes: A screen component, which is aligned vertically with the discharge port and is movably disposed in a transverse direction to the direction of travel; The first reciprocating transmission component; and A first reciprocating drive component is connected to the screen component via a first reciprocating transmission component to drive the screen component to reciprocate in the lateral direction, and to apply aerogel powder to the upper surface of the porous substrate while the screen component is reciprocating.

3. The powdering device according to claim 1, characterized in that, The hopper assembly includes: The hopper has a feed inlet at the top and a discharge outlet at the bottom, with the discharge outlet extending laterally to the direction of travel. A perforated plate, wherein the perforated plate has material passage holes, and the perforated plate is connected to the hopper at the discharge port; and A stirring component is movably disposed in the chamber of the silo and is used to stir the aerogel powder located on the upper part of the porous plate.

4. The powdering device according to claim 3, characterized in that, The agitation component includes a brush roller, which is rotatably disposed in the chamber about a rotation axis parallel to the transverse direction. The hopper assembly also includes an agitation drive component connected to the brush roller to drive the brush roller to rotate.

5. The powdering device according to claim 3, characterized in that, The perforated plate is detachably connected to the lower part of the hopper.

6. The powdering device according to claim 4, characterized in that, The perforated plate is located in the chamber and extends circumferentially from the brush roller.

7. The powdering device according to claim 1, characterized in that, The top of the hopper is provided with a feed inlet, which extends laterally along the direction of travel. The powdering device further includes a feeding assembly, which includes a feeding guide. The lower end of the feeding guide is movably connected to the hopper assembly in the transverse direction at the feed inlet, and the upper end of the feeding guide is adapted to be connected to a feeding device to receive aerogel powder.

8. The powdering device according to claim 7, characterized in that, The feeding assembly further includes: A second reciprocating transmission component, one end of which is connected to the feed guide component; and A second reciprocating drive member is connected to the other end of the second reciprocating transmission member to drive the feed guide member to move in the lateral direction via the second reciprocating transmission member.

9. The powdering device according to claim 1, characterized in that, The spreading assembly also includes a support platform for supporting the porous substrate. The support platform is located below the scraper and is spaced apart from the scraper in the vertical direction. The scraper includes a first plate portion and a second plate portion arranged opposite to each other, the first plate portion and the second plate portion being arranged to intersect and form a clamping opening, the clamping opening being opposite to the hopper assembly in the direction of travel.

10. The powdering device according to claim 9, characterized in that, The spreading assembly also includes a spacing adjustment member connected between the support platform and the scraper, which is operable to change the spacing between the scraper and the support platform in the vertical direction.

11. The powdering device according to claim 9, characterized in that, The scraper also includes an intermediate plate portion, which is connected between the first plate portion and the second plate portion. The spreading components also include: A first spacing adjustment member is disposed between the end of the first plate portion away from the intermediate plate portion and the support platform, for adjusting the spacing between the end of the first plate portion away from the intermediate plate portion and the support platform in the vertical direction. A second spacing adjustment member is disposed between the end of the second plate portion away from the intermediate plate portion and the support platform. The second spacing adjustment member is used to adjust the spacing in the vertical direction between the end of the second plate portion away from the intermediate plate portion and the support platform. A third spacing adjustment component is disposed between the intermediate plate and the support platform, and the third spacing adjustment component is used to adjust the spacing between the intermediate plate and the support platform in the vertical direction.

12. An apparatus for producing an aerogel composite material, characterized by comprising: The production equipment for the aerogel composite material includes: An unwinding device for unwinding the porous substrate in a roll shape; A winding device, which is arranged at intervals with the unwinding device along the travel direction, is used to wind up a porous substrate impregnated with aerogel powder and to pull the porous substrate to move along the travel direction. The powdering device according to any one of claims 1 to 11, wherein the powdering device is located between the unwinding device and the winding device along the travel direction; A powder impregnation apparatus is located between a powder application device and a winding device along the travel direction. The powder impregnation apparatus includes an upper electrode component, a lower electrode component, and an AC power supply assembly. The upper electrode component and the lower electrode component are arranged vertically spaced and opposite to each other to define an impregnation channel suitable for the porous substrate to pass through. The upper electrode component and the lower electrode component are connected to the AC power supply assembly to generate an alternating electric field in the impregnation channel, thereby impregnating the aerogel powder into the porous substrate.

13. The production apparatus for aerogel composites according to claim 12, characterized in that The production equipment for aerogel composite materials also includes: A surface cleaning device, located between the powder impregnation device and the winding device along the travel direction, is used to remove residual aerogel powder on the surface of the porous substrate that is not bonded to the porous substrate.

14. The production apparatus for aerogel composites according to claim 13, characterized in that The production equipment for aerogel composite materials also includes: A powder recovery device includes a collection component and a return component. The collection component is arranged correspondingly to at least one of the powder application device, the powder impregnation device, the surface cleaning device, and the winding device to collect aerogel powder. The return component is connected to the inlet of the hopper component to return the collected aerogel powder to the hopper component.

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