A preparation process of an aerogel thermal insulation material

Abstract

The present invention discloses a process for preparing aerogel thermal insulation material, which performs all-round process optimization from the glue preparation, solidification, drying and replacement processes of the aerogel, and effectively improves the production efficiency of the aerogel thermal insulation material: the present invention adopts a separate compartment design of a mixing compartment and a stirring compartment, and utilizes a fan-shaped rotating plate structure to realize a design similar to a rotary switch, so that mixing and glue injection in the glue preparation process are carried out simultaneously, which effectively saves the time of the glue preparation process; the present invention designs a solidification compartment according to the static solidification time of the aerogel, so that the aerogel completes solidification during the transportation process, and at the same time utilizes the semi-sealed structure of the solidification compartment body and the spraying solvent to slow down the volatilization speed of the solvent in the aerogel, which can prevent the aerogel from cracking due to excessive solvent volatilization; the present invention adopts a movable reaction compartment design for the replacement and drying of the aerogel, and utilizes a sliding combination of the reaction compartment, the replacement compartment and the drying compartment to realize the assembly line production of the aerogel thermal insulation material.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal insulation materials, in particular to a preparation process of aerogel thermal insulation materials. Background Art

[0002] Application of aerogel Aerogel exhibits excellent properties in thermal, electrical, optical, acoustic, adsorption and catalysis, which gives it broad application prospects in aerospace, building energy conservation, chemical industry, electronics and electrical engineering, biomedicine and other fields.

[0003] Aerogel is currently the best thermal insulation material in the world. Utilizing the thermal insulation properties of aerogel, new high-efficiency thermal insulation composite materials can be produced for use in energy-saving buildings. They have excellent thermal insulation, fire retardancy, sound insulation, and light transmission properties. In high-rise buildings, aerogel can reduce the weight of the building. Aerogel can be combined with ordinary glass and made into a thin film on the glass surface, which can effectively improve the energy-saving and thermal insulation effects. At the same time, aerogel particles can be encapsulated in laminated glass sheets to make materials similar to sandwich structures, which can replace existing building materials (such as architectural glass, curtain walls, etc.). Transparent aerogel can also be used to make the covering layer of solar collectors, greatly improving the utilization rate of solar energy. In addition, aerogel and its composite materials can also be widely used as insulation materials for high-temperature equipment, pipelines, and high-speed aircraft. Among the many excellent properties of aerogel, the application of thermal properties is the first choice. Therefore, aerogel thermal insulation materials remain the main application field and direction.

[0004] However, the development of aerogel is still in its early stages. Currently, there are few industrial aerogel production lines, and the production line standards for aerogel thermal insulation materials are not unified, resulting in a relatively slow development of the aerogel industry. At the same time, due to the characteristics of aerogel, the traditional aerogel production process has a low degree of automation, making it difficult to achieve assembly line production, which greatly affects production efficiency.

[0005] In view of this, we proposed a preparation process for aerogel thermal insulation materials, and carried out comprehensive process optimization from the aerogel preparation, solidification, drying and replacement processes, effectively improving the production efficiency of aerogel thermal insulation materials.

[0006] The information disclosed in this background technology section is only intended to enhance understanding of the overall background of the invention and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the Invention

[0007] In order to solve the problems raised in the above background technology, the technical solution of the present invention proposes a preparation process of aerogel thermal insulation material, which performs comprehensive process optimization from the aerogel preparation, solidification, drying and replacement processes, effectively improving the production efficiency of aerogel thermal insulation material.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A process for preparing an aerogel thermal insulation material comprises the following steps:

[0010] 1. Glue preparation stage:

[0011] S1. Glue preparation: The precursor solutions for preparing aerogel are respectively introduced into the raw material bin in the feeding structure of the glue preparation area, and the first switch is turned on by the motor component to respectively introduce the precursor solutions in the raw material bin into the mixing bin in the mixing structure through the feeding hole. After the mixing is completed, the rotating shaft and the rotating plate are rotated to rotate the rotating plate into the hollow layer of the first partition, and the colloidal solution in the mixing bin is further introduced into the stirring bin from the vacancy left by the rotation of the rotating plate. At the same time, the rotation of the rotating shaft can drive the stirring shaft to rotate together to stir the colloidal solution entering the stirring bin;

[0012] S2. Glue injection: The shells for preparing the aerogel thermal insulation material are placed in the middle of the positioning plates on the first transmission belt, and the shells are moved to the lower end of the discharge hole by the transmission of the first transmission belt. The second switch is turned on by the motor assembly to allow the colloidal solution to be introduced into the shell through the discharge hole to complete the glue injection;

[0013] The glue preparation area includes a feeding structure for loading the precursor solution, a batching structure for mixing the glue, and a motor assembly. The feeding structure is located above the batching structure.

[0014] 2. Solidification stage

[0015] S3, solidification: After the glue injection is completed, the shell is continuously transported by the first transmission belt, so that the shell is moved to the solidification chamber of the solidification zone, and the colloidal liquid in the shell is allowed to stand and solidify;

[0016] The solidification zone includes a solidification chamber for static solidification of the colloidal liquid. The solidification chamber is also provided with a plurality of groups of solvent nozzles, which are used to spray solvent onto the aerogel during the solidification process to prevent the aerogel from cracking due to excessive solidification. The solidification chamber is also connected to a first liquid inlet pipe and a liquid storage tank. The plurality of solvent nozzles are respectively connected to the liquid storage tank through the first liquid inlet pipe to spray the solvent into the liquid.

[0017] 3. Replacement Phase

[0018] S4, entering the chamber: After the colloidal solution in the shell solidifies by standing, the shell continues to be transported by the first transmission belt, so that the shell moves out of the solidification chamber. Then, the first push rod on the body frame pushes the shell in the middle of the positioning plate and pushes it into the reaction chamber on the second transmission belt. The reaction chamber is rotated by the electric control shaft to rotate the reaction chamber opening from the horizontal direction to the vertical direction;

[0019] S5, replacement: The reaction chamber is moved to the replacement chamber of the replacement zone by the transmission and transportation of the second transmission belt, and the replacement liquid of liquid carbon dioxide is injected into the reaction chamber through the liquid inlet hole. The liquid carbon dioxide replacement liquid replaces the solvent inside the aerogel colloid. The reaction chamber is continued to be driven and transported by the second transmission belt. When the reaction chamber moves to a position above the through hole at the bottom of the chamber, the liquid in the reaction chamber is discharged through the bottom opening of the reaction chamber and the through hole at the bottom of the chamber. After that, the reaction chamber continues to be driven and transported by the second transmission belt and the replacement and discharge are repeated;

[0020] The replacement area includes a replacement chamber for replacing the solvent inside the aerogel, a second liquid inlet pipe and a liquid discharge pipe are connected to the outside of the replacement chamber, a plurality of groups of liquid inlet holes are opened inside the replacement chamber, and the plurality of groups of liquid inlet holes are connected to the second liquid inlet pipe for injecting liquid carbon dioxide, a first chamber opening chute is provided at the chamber opening of the replacement chamber, a chamber bottom slide is provided at the chamber bottom of the replacement chamber, and a plurality of groups of chamber bottom through holes are spaced apart at the chamber bottom of the replacement chamber, and the plurality of groups of chamber bottom through holes are respectively connected to the liquid discharge pipe for discharging the replaced liquid;

[0021] 4. Drying stage

[0022] S6, drying: After the reaction chamber has been replaced multiple times in the replacement zone, the liquid carbon dioxide in the reaction chamber is no longer discharged after the last replacement. At this time, the reaction chamber continues to be transported by the second transmission belt to move the reaction chamber to the drying chamber in the drying zone. The reaction chamber is heated by the heating plate inside the drying chamber to heat the liquid carbon dioxide inside the reaction chamber to a supercritical state. The carbon dioxide in the supercritical state in the reaction chamber is then discharged through the second exhaust pipe, completing the drying of the aerogel in the internal shell of the reaction chamber;

[0023] The drying area includes a drying chamber for drying the liquid carbon dioxide inside the aerogel. A second chamber opening chute is provided at the chamber opening of the drying chamber. A heating plate is provided inside the drying chamber for heating the liquid carbon dioxide to a supercritical state. The drying chamber is connected to a second exhaust pipe for discharging the carbon dioxide in a supercritical state.

[0024] 5. Packaging stage

[0025] S7, unloading: After the reaction chamber has been dried in the drying zone, it is continuously transported by the second transmission belt to move the reaction chamber out of the drying chamber. The reaction chamber is rotated by the electronically controlled rotating shaft, so that the direction of the reaction chamber opening is rotated from vertical to horizontal. The shell inside the reaction chamber is pushed out by the second push rod on the body frame.

[0026] S8. Packaging: Apply glue to one side of the shell aerogel, and then glue the cover plate to complete the packaging of the aerogel thermal insulation material.

[0027] In the technical solution of the present invention, the body frame includes a first transmission belt, a second transmission belt, a first exhaust pipe, a first push rod and a second push rod; the first transmission belt is provided with several groups of positioning plates, and the positioning plates are used to position the shell position for aerogel thermal insulation material; the second transmission belt is provided with several groups of mounting openings, and the mounting openings are respectively provided with electric-controlled rotating shafts, and reaction chambers are respectively rotatably installed on the electric-controlled rotating shafts, and the electric-controlled rotating shafts are used to control the rotation of the reaction chambers.

[0028] Furthermore, a reaction chamber opening is provided at one end of the reaction chamber, a plurality of opening slide bars are provided at the reaction chamber opening, a chamber bottom chute is provided at the bottom of the reaction chamber, and a bottom opening is provided at the chamber bottom chute.

[0029] In the technical solution of the present invention, the feeding structure includes several groups of raw material bins and several groups of material guide pipes, and the several groups of material guide pipes are respectively located below the several groups of raw material bins; the batching structure includes a mixing bin and a stirring bin, the mixing bin is located at the upper end of the stirring bin, and the mixing bin is located below the several groups of material guide pipes. A first partition is provided between the mixing bin and the stirring bin, a second partition is provided between the mixing bin and the several groups of material guide pipes, and a third partition is provided below the stirring bin.

[0030] Furthermore, a hollow layer is provided in the middle of the first partition, and a rotating shaft is also rotatably provided in the middle of the first partition. A fan-shaped rotating plate is fixedly connected to the side of the rotating shaft, and the rotating plate can rotate in the hollow layer. The lower end of the rotating shaft is connected to a stirring shaft; several groups of feeding holes are opened on the second partition, and a first switch is also provided inside the second partition; several groups of discharging holes are opened on the third partition, and a second switch is also provided inside the third partition.

[0031] The separate compartment design for mixing and stirring can effectively improve the efficiency of glue dispensing. It should be noted that the first switch and the second switch are always in the same state. When the second switch is opened to inject glue into the shell below, the first switch is also in the open state to inject liquid into the mixing compartment for mixing. Because the rotating shaft is in a stationary state at this time, the fan-shaped rotating plate does not rotate into the hollow layer. The liquid in the mixing compartment cannot enter the mixing compartment through the gap generated when the rotating plate rotates, which can avoid affecting the colloidal liquid in the mixing compartment below.

[0032] In the technical solution of the present invention, when the reaction chamber moves to the replacement chamber in the replacement area, the chamber opening slide bar of the reaction chamber slides and is located inside the first chamber opening chute, and the chamber bottom chute is slidably combined with the chamber bottom slide bar. When the reaction chamber moves to the drying chamber in the drying area, the chamber opening slide bar of the reaction chamber slides and is located inside the second chamber opening chute. In the technical solution of the present invention,

[0033] Effective Gain: In summary, the present invention proposes a process for preparing aerogel thermal insulation materials, which optimizes the aerogel preparation, solidification, drying and replacement processes in an all-round way, effectively improving the production efficiency of aerogel thermal insulation materials:

[0034] First, the technical solution of the present invention adopts a separate compartment design of a mixing compartment and a stirring compartment, and uses a fan-shaped rotating plate structure to realize a design similar to a rotary switch, so that mixing and injection in the glue preparation process can be carried out simultaneously, which effectively saves time; second, the present invention designs a solidification compartment according to the static solidification time of the aerogel, so that the aerogel can be solidified during the transportation process. At the same time, the semi-sealed structure of the solidification compartment body and the spraying solvent are used to slow down the volatilization rate of the solvent in the aerogel, which can prevent the aerogel from cracking due to excessive volatilization of the solvent; third, the technical solution of the present invention adopts a movable reaction compartment design for the replacement and drying of the aerogel, and uses a sliding combination of the reaction compartment, the replacement compartment and the drying compartment to realize the assembly line production of aerogel thermal insulation materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 Schematic diagram of the structure of the aerogel thermal insulation material preparation equipment of the present invention Figure 1 ;

[0036] Figure 2 Schematic diagram of the structure of the aerogel thermal insulation material preparation equipment of the present invention Figure 2 ;

[0037] Figure 3 This is an enlarged schematic diagram of part of the structure of the aerogel thermal insulation material preparation equipment of the present invention Figure 1 ;

[0038] Figure 4Schematic diagram of the structure of the aerogel thermal insulation material preparation equipment of the present invention Figure 1 ;

[0039] Figure 5 Schematic diagram of the structure of the aerogel thermal insulation material preparation equipment of the present invention Figure 2 ;

[0040] Figure 6 Schematic diagram of the structure of the aerogel thermal insulation material preparation equipment of the present invention Figure 3 ;

[0041] Figure 7 This is an enlarged schematic diagram of part of the structure of the aerogel thermal insulation material preparation equipment of the present invention Figure 2 ;

[0042] Figure 8 This is an enlarged schematic diagram of part of the structure of the aerogel thermal insulation material preparation equipment of the present invention Figure 3 ;

[0043] Figure 9 This is an enlarged schematic diagram of part of the structure of the aerogel thermal insulation material preparation equipment of the present invention Figure 4 ;

[0044] Figure 10 This is an enlarged schematic diagram of part of the structure of the aerogel thermal insulation material preparation equipment of the present invention Figure 5 ;

[0045] Figure 11 Schematic diagram of the structure of the aerogel thermal insulation material preparation equipment of the present invention Figure 4 ;

[0046] Figure 12 This is an enlarged schematic diagram of part of the structure of the aerogel thermal insulation material preparation equipment of the present invention Figure 6 ;

[0047] Figure 13 This is an enlarged schematic diagram of part of the structure of the aerogel thermal insulation material preparation equipment of the present invention Figure 7 ;

[0048] Figure 14 Schematic diagram of the structure of the aerogel thermal insulation material preparation equipment of the present invention Figure 5 ;

[0049] Figure 15 Schematic diagram of the structure of the aerogel thermal insulation material preparation equipment of the present invention Figure 6 ;

[0050] Figure 16 Schematic diagram of the structure of the aerogel thermal insulation material preparation equipment of the present invention Figure 7 ;

[0051] Figure 17 This is an enlarged schematic diagram of part of the structure of the aerogel thermal insulation material preparation equipment of the present invention Figure 8 ;

[0052] Figure 18 This is an enlarged schematic diagram of part of the structure of the aerogel thermal insulation material preparation equipment of the present invention Figure 9 ;

[0053] Figure 19 This is a process flow chart of a process for preparing an aerogel thermal insulation material of the present invention;

[0054] In the figure: 100, body frame; 110, first transmission belt; 111, positioning plate; 120, second transmission belt; 121, installation opening; 122, reaction chamber; 122-1, reaction chamber opening; 122-2, chamber opening slide; 122-3, chamber bottom slide; 122-4, bottom opening; 123, electric control shaft; 130, first exhaust pipe; 140, first push rod; 150, second push rod; 200, glue mixing area; 210, feeding structure; 211, raw material chamber; 212, material guide pipe; 220, mixing structure; 221, mixing chamber; 222, stirring chamber; 223, first partition; 223-1, hollow layer; 224, shaft; 224-1, rotating plate; 22 5. Stirring shaft; 230. Motor assembly; 231. Second partition; 231-1. Feed hole; 231-2. First switch; 232. Third partition; 232-1. Feed hole; 232-2. Second switch; 300. Solidification zone; 310. Solidification chamber; 320. Solvent nozzle; 330. First liquid inlet pipe; 340. Liquid storage chamber; 400. Replacement zone; 410. Replacement chamber; 411. First chamber opening chute; 412. Liquid inlet; 413. Chamber bottom slide; 414. Chamber bottom through hole; 415. Drain pipe; 420. Second liquid inlet pipe; 500. Drying zone; 510. Drying chamber; 511. Second chamber opening chute; 520. Second exhaust pipe; 530. Heating plate. DETAILED DESCRIPTION

[0055] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions 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 embodiments described below are only 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 making creative work are within the scope of protection of the present invention.

[0056] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0057] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0058] In addition, in the description of the present invention, “several” means two or more than two, unless otherwise clearly and specifically defined.

[0059] In order to solve the problems raised in the above-mentioned background technology, the embodiment of the present invention proposes a preparation process for aerogel thermal insulation material, which performs comprehensive process optimization from the aerogel preparation, solidification, drying and replacement processes, effectively improving the production efficiency of aerogel thermal insulation material: First, the technical solution of the embodiment of the present invention adopts a separate compartment design of a mixing chamber and a stirring chamber, and uses a fan-shaped rotating plate structure to realize a design similar to a rotary switch, so that mixing and injection in the glue preparation process can be carried out simultaneously, effectively saving time; second, the embodiment of the present invention designs a solidification chamber according to the static solidification time of the aerogel, so that the aerogel completes solidification during the transportation process, and at the same time uses the semi-sealed structure of the solidification chamber body and the spraying solvent to slow down the volatilization rate of the solvent in the aerogel, which can prevent the aerogel from cracking due to excessive solvent volatilization; third, the technical solution of the embodiment of the present invention adopts a movable reaction chamber design for the replacement and drying of the aerogel, and uses a sliding combination of the reaction chamber, the replacement chamber and the drying chamber to realize the assembly line production of aerogel thermal insulation material.

[0060] like Figure 19 As shown, this embodiment provides a process for preparing an aerogel thermal insulation material, comprising the following steps:

[0061] 1. Glue preparation stage:

[0062] S1. Glue preparation: The precursor solutions for preparing aerogel are respectively introduced into the raw material bin 211 in the feeding structure 210 of the glue preparation area 200, and the first switch 231-2 is controlled by the motor assembly 230 to open and introduce the precursor solutions in the raw material bin 211 into the mixing bin 221 in the mixing structure 220 through the feed hole 231-1. After the mixing is completed, the rotating shaft 224 and the rotating plate 224-1 are rotated to rotate the rotating plate 224-1 into the hollow layer 223-1 of the first partition 223, and further the colloidal solution in the mixing bin 221 enters the stirring bin 222 from the vacant position after the rotating plate 224-1 is rotated. At the same time, the rotation of the rotating shaft 224 can drive the stirring shaft 225 to rotate together to stir the colloidal solution entering the stirring bin 222;

[0063] S2. Glue injection: The shells for preparing the aerogel thermal insulation material are placed in the middle of the positioning plates 111 on the first transmission belt 110. The shells are moved to the lower end of the discharge hole 232-1 by the transmission of the first transmission belt 110. The second switch 232-2 is turned on by the motor assembly 230 to allow the colloidal solution to be introduced into the shell through the discharge hole 232-1 to complete the glue injection.

[0064] like Figure 3 As shown, the glue preparation area 200 includes a feeding structure 210 for loading a precursor solution, a mixing structure 220 for mixing the glue, and a motor assembly 230. The feeding structure 210 is located above the mixing structure 220.

[0065] 2. Solidification stage

[0066] S3, solidification: After the glue injection is completed, the shell is continuously transported by the first transmission belt 110, so that the shell is moved to the solidification chamber 310 of the solidification zone 300, and the colloidal liquid in the shell is allowed to stand and solidify;

[0067] like Figure 8 and Figure 9 As shown, the solidification zone 300 includes a solidification chamber 310 for static solidification of the colloidal liquid. Several groups of solvent nozzles 320 are also provided in the solidification chamber 310. The several groups of solvent nozzles 320 are used to spray solvent onto the aerogel during the solidification process to prevent the aerogel from cracking due to excessive solidification. The solidification chamber 310 is also connected to a first liquid inlet pipe 330 and a liquid storage chamber 340. Several groups of solvent nozzles 3200 are respectively connected to the first liquid inlet pipe 330 and the liquid storage chamber 340 for spraying the solvent.

[0068] 3. Replacement Phase

[0069] S4. Entering the chamber: After the colloidal solution in the housing solidifies by standing, the housing is further transported by the first transmission belt 110 to move the housing out of the solidification chamber 310. Then, the first push rod 140 on the body frame 100 pushes the housing between the positioning plate 111 and into the reaction chamber 122 on the second transmission belt 120. The reaction chamber 122 is rotated by the electric control shaft 123 to rotate the reaction chamber 122, so that the direction of the reaction chamber opening 122-1 rotates from the horizontal direction to the vertical direction.

[0070] S5. Replacement: The reaction chamber 122 is moved to the replacement chamber 410 of the replacement zone 400 by the second transmission belt 120. Liquid carbon dioxide replacement fluid is injected into the reaction chamber 122 through the liquid inlet 412. The liquid carbon dioxide replacement fluid replaces the solvent in the aerogel colloid. The reaction chamber 122 is then continuously transported by the second transmission belt 120. When the reaction chamber 122 is above the chamber bottom through-hole 414, the liquid in the reaction chamber 122 is discharged through the bottom opening 122-4 and the chamber bottom through-hole 414. The reaction chamber 122 is then continuously transported by the second transmission belt 120 and the replacement and discharge processes are repeated.

[0071] like Figure 13 、 Figure 14 、 Figure 15 and Figure 16 As shown, the replacement area 400 includes a replacement chamber 410 for replacing the solvent inside the aerogel. The replacement chamber 410 is externally connected to a second liquid inlet pipe 420 and a liquid discharge pipe 415. Several groups of liquid inlet holes 412 are opened inside the replacement chamber 410. Several groups of liquid inlet holes 412 are connected to the second liquid inlet pipe 420 for injecting liquid carbon dioxide. A first chamber opening chute 411 is provided at the chamber opening of the replacement chamber 410. The bottom of the replacement chamber 410 is provided with a chamber bottom slide 413, and the bottom of the replacement chamber 410 is further spaced apart with several groups of chamber bottom through holes 414. Several groups of chamber bottom through holes 414 are respectively connected to the liquid discharge pipe 415 for discharging the replaced liquid.

[0072] 4. Drying stage

[0073] S6, drying: After the reaction chamber 122 has undergone multiple replacements in the replacement zone 400, the liquid carbon dioxide in the reaction chamber 122 is no longer discharged after the last replacement. At this time, the reaction chamber 122 continues to be transported by the second transmission belt 120, so that the reaction chamber 122 is moved to the drying chamber 510 of the drying zone 500. The heating plate 530 in the drying chamber 510 heats the reaction chamber 122, so that the liquid carbon dioxide in the reaction chamber 122 is heated to a supercritical state. The carbon dioxide in the supercritical state in the reaction chamber 122 is then discharged through the second exhaust pipe 520, thereby completing the drying of the aerogel in the inner shell of the reaction chamber 122.

[0074] like Figure 17 As shown, the drying area 500 includes a drying chamber 510 for drying the liquid carbon dioxide inside the aerogel. A second chamber opening chute 511 is provided at the chamber opening of the drying chamber 510. A heating plate 530 is provided inside the drying chamber 510 for heating the liquid carbon dioxide to a supercritical state. The drying chamber 510 is connected to a second exhaust pipe 520 for discharging the carbon dioxide in the supercritical state.

[0075] 5. Packaging stage

[0076] S7, unloading: After drying in the drying zone 500, the reaction chamber 122 is further transported by the second transmission belt 120 to move the reaction chamber 122 out of the drying chamber 510. The reaction chamber 122 is rotated by the electrically controlled rotating shaft 123, so that the direction of the reaction chamber opening 122-1 is rotated from the vertical direction to the horizontal direction. The shell inside the reaction chamber 122 is pushed out by the second push rod 150 on the machine frame 100.

[0077] S8. Packaging: Apply glue to one side of the shell aerogel, and then glue the cover plate to complete the packaging of the aerogel thermal insulation material.

[0078] In this embodiment, if Figure 1 、 Figure 2 、 Figure 12 and Figure 18 As shown, the body frame 100 includes a first transmission belt 110, a second transmission belt 120, a first exhaust pipe 130, a first push rod 140 and a second push rod 150; Figure 7 As shown, the first transmission belt 110 is provided with a plurality of positioning plates 111, such as Figure 10 As shown, a plurality of mounting openings 121 are formed on the second transmission belt 120 , and an electric-controlled rotating shaft 123 is respectively disposed in the mounting openings 121 , and a reaction chamber 122 is rotatably mounted on the electric-controlled rotating shaft 123 .

[0079] Specifically, such as Figure 11 As shown, a reaction chamber opening 122-1 is provided at one end of the reaction chamber 122, a plurality of chamber opening slide bars 122-2 are provided at the reaction chamber opening 122-1, a chamber bottom chute 122-3 is provided at the bottom of the reaction chamber 122, and a bottom opening 122-4 is provided at the chamber bottom chute 122-3.

[0080] In this embodiment, if Figure 4 As shown, the feeding structure 210 includes several groups of raw material bins 211 and several groups of material guide pipes 212, and the several groups of material guide pipes 212 are respectively located below the several groups of raw material bins 211; the batching structure 220 includes a mixing bin 221 and a stirring bin 222, the mixing bin 221 is located at the upper end of the stirring bin 222, and the mixing bin 221 is located below the several groups of material guide pipes 212, a first partition 223 is provided between the mixing bin 221 and the stirring bin 222, a second partition 231 is provided between the mixing bin 221 and the several groups of material guide pipes 212, and a third partition 232 is provided below the stirring bin 222.

[0081] Specifically, such as Figure 6As shown, a hollow layer 223-1 is provided in the middle of the first partition 223, and a rotating shaft 224 is rotatably provided in the middle of the first partition 223. A fan-shaped rotating plate 224-1 is fixedly connected to the side of the rotating shaft 224. The rotating plate 224-1 can rotate in the hollow layer 223-1. The lower end of the rotating shaft 224 is connected to a stirring shaft 225; Figure 5 As shown, the second partition 231 is provided with several groups of feed holes 231-1, and the interior of the second partition 231 is also provided with a first switch 231-2; the third partition 232 is provided with several groups of discharge holes 232-1, and the interior of the third partition 232 is also provided with a second switch 232-2.

[0082] Among them, when the reaction chamber 122 moves to the replacement chamber 410 of the replacement area 400, the chamber opening slide 122-2 of the reaction chamber 122 slides and is located inside the first chamber opening slide 411, and the chamber bottom slide 122-3 is slidably combined with the chamber bottom slide 413. When the reaction chamber 122 moves to the drying chamber 510 of the drying area 500, the chamber opening slide 122-2 of the reaction chamber 122 slides and is located inside the second chamber opening slide 511.

[0083] Specific working principle: When the embodiment is working, the precursor solution for preparing aerogel is respectively introduced into the raw material bin 211 in the feeding structure 210 of the glue preparation area 200, and the first switch 231-2 is turned on by the motor assembly 230 to respectively introduce the precursor solution in the raw material bin 211 into the mixing bin 221 in the batching structure 220 through the feed hole 231-1. After the mixing is completed, the rotating shaft 224 and the rotating plate 224-1 are rotated to rotate the rotating plate 224-1 into the hollow layer 223-1 of the first partition 223, further allowing the colloidal solution in the mixing bin 221 to be discharged from the rotating plate 224-1. 1 after the rotation of the shaft 224 can drive the stirring shaft 225 to rotate together to stir the colloidal solution in the stirring chamber 222; the shells for preparing the aerogel thermal insulation material are respectively placed in the middle of the positioning plates 111 on the first transmission belt 110, and the shells are moved to the lower end of the discharge hole 232-1 by the transmission and transportation of the first transmission belt 110, and the second switch 232-2 is turned on by the motor assembly 230 to allow the colloidal solution to be introduced into the shell from the discharge hole 232-1 to complete the glue injection; after the glue injection is completed, the shells continue to be transported by the first transmission belt 110. The shell is transported by the first transmission belt 110 to move the shell into the solidification chamber 310 of the solidification zone 300, and the colloidal liquid in the shell is allowed to stand and solidify; after the colloidal solution in the shell is solidified by standing, the shell is further transported by the first transmission belt 110 to move the shell out of the solidification chamber 310, and then the first push rod 140 on the body frame 100 pushes the shell in the middle of the positioning plate 111 out and pushes it into the reaction chamber 122 on the second transmission belt 120, and the reaction chamber 122 is rotated by the electric control shaft 123 to rotate, so that the direction of the reaction chamber port 122-1 is rotated from the horizontal direction to the vertical direction; through the second transmission belt 1 The reaction chamber 122 is moved by the transmission and transportation of the second transmission belt 120 to the replacement chamber 410 of the replacement area 400. The reaction chamber 122 is filled with liquid carbon dioxide replacement liquid through the liquid inlet 412. The liquid carbon dioxide replacement liquid replaces the solvent in the aerogel colloid and continues to be transported by the second transmission belt 120. When the reaction chamber 122 moves to a position above the chamber bottom through hole 414, the liquid in the reaction chamber 122 is discharged through the bottom opening 122-4 of the reaction chamber 122 and the chamber bottom through hole 414. After that, the reaction chamber 122 continues to be transported by the second transmission belt 120 and the replacement and discharge are repeated.After the reaction chamber 122 has been replaced multiple times in the replacement zone 400, the liquid carbon dioxide inside the reaction chamber 122 is no longer discharged after the last replacement. At this time, the reaction chamber 122 continues to be transported by the second transmission belt 120, so that the reaction chamber 122 is moved to the drying chamber 510 of the drying zone 500. The heating plate 530 inside the drying chamber 510 heats the reaction chamber 122, so that the liquid carbon dioxide inside the reaction chamber 122 is heated to a supercritical state, and then the carbon dioxide in the supercritical state inside the reaction chamber 122 is discharged through the second exhaust pipe 520, completing the process. The aerogel inside the shell of reaction chamber 122 is dried. After drying in drying zone 500, reaction chamber 122 is transported by second conveyor belt 120 out of drying chamber 510. The reaction chamber 122 is rotated by electrically controlled rotating shaft 123, rotating the chamber opening 122-1 from vertical to horizontal. The shell inside reaction chamber 122 is pushed out by second push rod 150 on body frame 100. Glue is applied to one side of the aerogel shell, and after application, a cover is glued in place to complete the encapsulation of the aerogel thermal insulation material.

[0084] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A process for preparing aerogel thermal insulation material, characterized in that: The specific steps include:

1. Glue preparation stage: S1. Glue preparation: The precursor solutions for preparing aerogel are respectively introduced into the raw material bin in the feeding structure of the glue preparation area, and the first switch is turned on by the motor component to respectively introduce the precursor solutions in the raw material bin into the mixing bin in the mixing structure through the feeding hole. After the mixing is completed, the rotating shaft and the rotating plate are rotated to rotate the rotating plate into the hollow layer of the first partition, and the colloidal solution in the mixing bin is further introduced into the stirring bin from the vacancy left by the rotation of the rotating plate. At the same time, the rotation of the rotating shaft can drive the stirring shaft to rotate together to stir the colloidal solution entering the stirring bin; S2. Glue injection: The shells for preparing the aerogel thermal insulation material are placed in the middle of the positioning plates on the first transmission belt, and the shells are moved to the lower end of the discharge hole by the transmission of the first transmission belt. The second switch is turned on by the motor assembly to allow the colloidal solution to be introduced into the shell through the discharge hole to complete the glue injection; The glue preparation area includes a feeding structure for loading the precursor solution, a batching structure for mixing the glue, and a motor assembly. The feeding structure is located above the batching structure.

2. Solidification stage S3, solidification: After the glue injection is completed, the shell is continuously transported by the first transmission belt, so that the shell is moved to the solidification chamber of the solidification zone, and the colloidal liquid in the shell is allowed to stand and solidify; The solidification zone includes a solidification chamber for static solidification of the colloidal liquid. The solidification chamber is also provided with a plurality of groups of solvent nozzles, which are used to spray solvent onto the aerogel during the solidification process to prevent the aerogel from cracking due to excessive solidification. The solidification chamber is also connected to a first liquid inlet pipe and a liquid storage tank. The plurality of solvent nozzles are respectively connected to the liquid storage tank through the first liquid inlet pipe to spray the solvent into the liquid.

3. Replacement Phase S4, entering the chamber: After the colloidal solution in the shell solidifies by standing, the shell continues to be transported by the first transmission belt, so that the shell moves out of the solidification chamber. Then, the first push rod on the body frame pushes the shell in the middle of the positioning plate and pushes it into the reaction chamber on the second transmission belt. The reaction chamber is rotated by the electric control shaft to rotate the reaction chamber opening from the horizontal direction to the vertical direction; S5, replacement: The reaction chamber is moved to the replacement chamber of the replacement zone by the transmission and transportation of the second transmission belt, and the replacement liquid of liquid carbon dioxide is injected into the reaction chamber through the liquid inlet hole. The liquid carbon dioxide replacement liquid replaces the solvent inside the aerogel colloid. The reaction chamber is continued to be driven and transported by the second transmission belt. When the reaction chamber moves to a position above the through hole at the bottom of the chamber, the liquid in the reaction chamber is discharged through the bottom opening of the reaction chamber and the through hole at the bottom of the chamber. After that, the reaction chamber continues to be driven and transported by the second transmission belt and the replacement and discharge are repeated; The replacement area includes a replacement chamber for replacing the solvent inside the aerogel, a second liquid inlet pipe and a liquid discharge pipe are connected to the outside of the replacement chamber, a plurality of groups of liquid inlet holes are opened inside the replacement chamber, and the plurality of groups of liquid inlet holes are connected to the second liquid inlet pipe for injecting liquid carbon dioxide, a first chamber opening chute is provided at the chamber opening of the replacement chamber, a chamber bottom slide is provided at the chamber bottom of the replacement chamber, and a plurality of groups of chamber bottom through holes are spaced apart at the chamber bottom of the replacement chamber, and the plurality of groups of chamber bottom through holes are respectively connected to the liquid discharge pipe for discharging the replaced liquid; 4. Drying stage S6, drying: After the reaction chamber has been replaced multiple times in the replacement zone, the liquid carbon dioxide in the reaction chamber is no longer discharged after the last replacement. At this time, the reaction chamber continues to be transported by the second transmission belt to move the reaction chamber to the drying chamber in the drying zone. The reaction chamber is heated by the heating plate inside the drying chamber to heat the liquid carbon dioxide inside the reaction chamber to a supercritical state. The carbon dioxide in the supercritical state in the reaction chamber is then discharged through the second exhaust pipe, completing the drying of the aerogel in the internal shell of the reaction chamber; The drying area includes a drying chamber for drying the liquid carbon dioxide inside the aerogel. A second chamber opening chute is provided at the chamber opening of the drying chamber. A heating plate is provided inside the drying chamber for heating the liquid carbon dioxide to a supercritical state. The drying chamber is connected to a second exhaust pipe for discharging the carbon dioxide in a supercritical state.

5. Packaging stage S7, unloading: After the reaction chamber has been dried in the drying zone, it is continuously transported by the second transmission belt to move the reaction chamber out of the drying chamber. The reaction chamber is rotated by the electronically controlled rotating shaft, so that the direction of the reaction chamber opening is rotated from vertical to horizontal. The shell inside the reaction chamber is pushed out by the second push rod on the body frame. S8. Packaging: Apply glue to one side of the shell aerogel, and then glue the cover plate to complete the packaging of the aerogel thermal insulation material.

2. The process for preparing aerogel thermal insulation material according to claim 1, characterized in that: The body frame includes a first transmission belt, a second transmission belt, a first exhaust pipe, a first push rod and a second push rod; the first transmission belt is provided with several groups of positioning plates, and the second transmission belt is provided with several groups of mounting openings, and the mounting openings are respectively provided with electric-controlled rotating shafts, and reaction chambers are respectively rotatably installed on the electric-controlled rotating shafts.

3. The process for preparing aerogel thermal insulation material according to claim 2, characterized in that: A reaction chamber opening is provided at one end of the reaction chamber, a plurality of chamber opening slide bars are provided at the reaction chamber opening, a chamber bottom chute is provided at the bottom of the reaction chamber, and a bottom opening is provided at the chamber bottom chute.

4. The process for preparing aerogel thermal insulation material according to claim 1, characterized in that: The feeding structure includes several groups of raw material bins and several groups of material guide pipes, and the several groups of material guide pipes are respectively located below the several groups of raw material bins; the batching structure includes a mixing bin and a stirring bin, the mixing bin is located at the upper end of the stirring bin, and the mixing bin is located below the several groups of material guide pipes. A first partition is provided between the mixing bin and the stirring bin, a second partition is provided between the mixing bin and the several groups of material guide pipes, and a third partition is provided below the stirring bin.

5. The process for preparing aerogel thermal insulation material according to claim 4, characterized in that: A hollow layer is provided in the middle of the first partition, and a rotating shaft is also provided in the middle of the first partition. A fan-shaped rotating plate is fixedly connected to the side of the rotating shaft, and the rotating plate can rotate in the hollow layer. The lower end of the rotating shaft is connected to a stirring shaft; several groups of feeding holes are provided on the second partition, and a first switch is also provided inside the second partition; several groups of discharging holes are provided on the third partition, and a second switch is also provided inside the third partition.

6. The process for preparing aerogel thermal insulation material according to claim 3, characterized in that: When the reaction bin moves to the replacement bin in the replacement area, the bin opening slide bar of the reaction bin slides and is located inside the first bin opening chute, and the bin bottom chute is slidably combined with the bin bottom slide bar. When the reaction bin moves to the drying bin in the drying area, the bin opening slide bar of the reaction bin slides and is located inside the second bin opening chute.

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