Aerogel material supercritical drying apparatus

Abstract

The utility model discloses a kind of aerogel material supercritical drying device, including high-pressure reaction kettle, the high-pressure reaction kettle bottom fixedly connected support leg, the high-pressure reaction kettle side wall is communicated feed pipe, the high-pressure reaction kettle top fixedly connected drive motor, the drive motor bottom fixedly connected transmission shaft, the transmission shaft bottom fixedly connected fixed inclined plate, the fixed inclined plate one side fixedly connected electric rotary rod.The utility model relates to supercritical drying technical field;When drive motor works, the wet gel in cooling box interior can cool cooling to drive motor, at the same time, the heat generated by drive motor can be used to preheat wet gel, and then improve subsequent wet gel reaction rate, in addition, by the synergic cooperation of drive motor, transmission shaft, fixed inclined plate, electric rotary rod and stirring blade, high-viscosity wet gel in high-pressure reaction kettle can be all-around stirred, and solvent replacement efficiency is further improved.

Description

Technical Field

[0001] This utility model relates to the field of supercritical drying technology, specifically a supercritical drying device for aerogel materials. Background Technology

[0002] The supercritical drying device for aerogel materials is the core equipment for drying aerogel precursors using supercritical fluid technology. Its core objective is to efficiently prepare aerogel materials with high porosity, low density, and high specific surface area while avoiding the damage to the gel nanopores caused by surface tension resulting from solvent evaporation in traditional drying.

[0003] When using high-viscosity wet gels, existing supercritical drying devices for aerosol gel materials suffer from reduced equipment efficiency due to the low natural diffusion efficiency of high-viscosity wet gels.

[0004] To address these issues, this invention provides a supercritical drying apparatus for aerogel materials. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a supercritical drying device for aerogel materials, which solves the aforementioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a supercritical drying device for aerogel materials, comprising a high-pressure reactor, a support leg fixedly connected to the bottom of the high-pressure reactor, a feed pipe connected to the side wall of the high-pressure reactor, a drive motor fixedly connected to the top of the high-pressure reactor, a transmission shaft fixedly connected to the bottom of the drive motor, a fixed inclined plate fixedly connected to the bottom of the transmission shaft, an electric rotating rod fixedly connected to one side of the fixed inclined plate, multiple stirring blades fixedly connected to the side wall of the electric rotating rod, the multiple stirring blades being equally spaced, a discharge pipe connected to the bottom of the high-pressure reactor, a cooling box fixedly connected to the top of the high-pressure reactor, and a conveying pipe connected to the bottom of the cooling box.

[0007] Preferably, the inner wall of the cooling box is fixedly connected to the side wall of the drive motor, and a first solenoid valve is provided on the material conveying pipe.

[0008] Preferably, the high-pressure reactor has multiple infrared radiation heating tubes fixedly connected to its side wall, and the multiple infrared radiation heating tubes are arranged at equal intervals.

[0009] Preferably, a pressure sensor is fixedly connected to the bottom of the fixed inclined plate, and a display screen is fixedly connected to the side wall of the high-pressure reactor.

[0010] Preferably, a sealing ring is fixedly connected to the side wall of the high-pressure reactor, and the side wall of the sealing ring is rotatably connected to the side wall of the drive shaft. The sealing ring is made of fluororubber.

[0011] Preferably, the discharge pipe is equipped with a second solenoid valve, and the side wall of the sealing ring is fixedly connected to the side wall of the conveying pipe.

[0012] This invention provides a supercritical drying device for aerogel materials, which has the following advantages compared with the prior art:

[0013] (1) In this supercritical drying device for aerogel materials, after the high-pressure supercritical fluid enters the high-pressure reactor through the feed pipe, the internal feed pump is started. The feed pump transports the high-viscosity wet gel inside to the high-pressure reactor through the feed pipe. At this time, the high-pressure reactor can be started to process the mixture of the feed material and the material inside the high-pressure reactor. Since the natural diffusion rate of the high-viscosity wet gel is slow, the drive motor can be started. The drive motor drives the stirring blades to rotate through the transmission shaft, the fixed inclined plate and the electric rotating rod. Then the electric rotating rod is started to drive the stirring blades to rotate, so that multiple stirring blades can stir the high-viscosity wet gel inside the high-pressure reactor in all directions, thereby improving the solvent replacement efficiency inside the high-pressure reactor. By setting a second solenoid valve, the opening and closing of the discharge pipe can be automatically controlled, thereby further improving the automation level of the equipment.

[0014] (2) In this supercritical drying device for aerogel materials, as the working time of the drive motor increases, the surface temperature of the drive motor will gradually rise. The wet gel inside the cooling box can cool the drive motor. At the same time, the drive motor can also preheat the wet gel inside the cooling box. In this way, the subsequent replacement process of wet gel and high-pressure supercritical fluid can be accelerated, thereby shortening the drying time. By setting multiple infrared radiation heating tubes, the wet gel can be directly radiated and heated to form a synergistic effect of external and internal heat, which can improve the heating rate of the wet gel. When the high-pressure reactor processes the wet gel and high-pressure supercritical fluid, the pressure sensor is set to monitor the internal pressure of the high-pressure reactor in real time and display it intuitively on the screen. In this way, the staff can know the internal pressure of the high-pressure reactor more clearly and prevent the internal pressure of the high-pressure reactor from exceeding the threshold. By setting a sealing ring made of fluororubber, the sealing ring can have stronger corrosion resistance and better sealing performance. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a supercritical drying device for aerogel materials according to this utility model;

[0016] Figure 2 This is a schematic diagram of the position and structure of the infrared radiation heating tube of this utility model;

[0017] Figure 3 This is a schematic diagram of the position and structure of the first solenoid valve of this utility model;

[0018] Figure 4 This is a utility model Figure 3 Enlarged view of point A in the image.

[0019] In the diagram: 1. High-pressure reactor; 2. Support leg; 3. Feed pipe; 4. Drive motor; 5. Transmission shaft; 6. Fixed inclined plate; 7. Pressure sensor; 8. Electric rotating rod; 9. Stirring blade; 10. Cooling box; 11. Feed pipe; 12. First solenoid valve; 13. Sealing ring; 14. Display screen; 15. Infrared radiation heating tube; 16. Discharge pipe; 17. Second solenoid valve. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example:

[0022] Please see Figure 1 - Figure 4 A supercritical drying device for aerogel materials includes a high-pressure reactor 1, a support leg 2 fixedly connected to the bottom of the high-pressure reactor 1, a feed pipe 3 connected to the side wall of the high-pressure reactor 1, a drive motor 4 fixedly connected to the top of the high-pressure reactor 1, a transmission shaft 5 fixedly connected to the bottom of the drive motor 4, a fixed inclined plate 6 fixedly connected to the bottom of the transmission shaft 5, an electric rotating rod 8 fixedly connected to one side of the fixed inclined plate 6, multiple stirring blades 9 fixedly connected to the side wall of the electric rotating rod 8, the multiple stirring blades 9 being arranged at equal intervals, a discharge pipe 16 connected to the bottom of the high-pressure reactor 1, a cooling box 10 fixedly connected to the top of the high-pressure reactor 1, and a conveying pipe 11 connected to the bottom of the cooling box 10.

[0023] It should be noted that after the high-pressure supercritical fluid enters the high-pressure reactor 1 through the feed pipe 3, the internal feed pump is started. The feed pump transports the high-viscosity wet gel inside to the high-pressure reactor 1 through the feed pipe 11. At this time, the high-pressure reactor 1 can be started to process the mixture of the feed material and the material inside the high-pressure reactor 1. Since the natural diffusion rate of the high-viscosity wet gel is slow, the drive motor 4 can be started. The drive motor 4 drives the stirring blades 9 to rotate through the transmission shaft 5, the fixed inclined plate 6 and the electric rotating rod 8. Then the electric rotating rod 8 is started to drive the stirring blades 9 to rotate, so that multiple stirring blades 9 can stir the high-viscosity wet gel inside the high-pressure reactor 1 in all directions, thereby improving the solvent replacement efficiency inside the high-pressure reactor 1.

[0024] In an optional embodiment: the inner wall of the cooling box 10 is fixedly connected to the side wall of the drive motor 4, and a first solenoid valve 12 is provided on the material conveying pipe 11.

[0025] It should be noted that as the operating time of the drive motor 4 increases, the surface temperature of the drive motor 4 will gradually rise. The wet gel inside the cooling box 10 can cool the drive motor 4. At the same time, the drive motor 4 can also preheat the wet gel inside the cooling box 10. In this way, the subsequent replacement process of the wet gel with the high-pressure supercritical fluid can be accelerated, thereby shortening the drying time.

[0026] In an optional embodiment: a plurality of infrared radiation heating tubes 15 are fixedly connected to the side wall of the high-pressure reactor 1, and the plurality of infrared radiation heating tubes 15 are arranged at equal intervals.

[0027] It should be noted that by setting multiple infrared radiation heating tubes 15, the wet gel can be directly radiated and heated to form a synergistic effect of external and internal heat, thereby improving the heating rate of the wet gel.

[0028] In an optional embodiment: a pressure sensor 7 is fixedly connected to the bottom of the fixed inclined plate 6, and a display screen 14 is fixedly connected to the side wall of the high-pressure reactor 1.

[0029] It should be noted that when the high-pressure reactor 1 processes wet gel and high-pressure supercritical fluid, the internal pressure of the high-pressure reactor 1 is monitored in real time by setting pressure sensor 7 and displayed intuitively on display screen 14. In this way, the staff can know the internal pressure of the high-pressure reactor 1 more clearly and prevent the internal pressure of the high-pressure reactor 1 from exceeding the threshold.

[0030] In an optional embodiment: a sealing ring 13 is fixedly connected to the side wall of the high-pressure reactor 1, and the side wall of the sealing ring 13 is rotatably connected to the side wall of the drive shaft 5. The sealing ring 13 is made of fluororubber.

[0031] It should be noted that by setting a sealing ring 13 made of fluororubber, the sealing ring 13 can have stronger corrosion resistance and better sealing performance.

[0032] In an optional embodiment: a second solenoid valve 17 is provided on the discharge pipe 16, and the side wall of the sealing ring 13 is fixedly connected to the side wall of the conveying pipe 11.

[0033] It should be noted that by setting the second solenoid valve 17, the opening and closing of the discharge pipe 16 can be automatically controlled, thereby further improving the automation level of the equipment.

[0034] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0035] During operation, after the high-pressure supercritical fluid enters the high-pressure reactor 1 through the feed pipe 3, the internal feed pump is started. The feed pump transports the high-viscosity wet gel inside through the feed pipe 11 to the high-pressure reactor 1 for distribution. At this time, the high-pressure reactor 1 can be started to process the mixture of distribution material and other materials inside the high-pressure reactor 1. Given that the natural diffusion rate of the high-viscosity wet gel is slow, the drive motor 4 can be started. The drive motor 4 drives the stirring blades 9 to rotate through the transmission shaft 5, the fixed inclined plate 6, and the electric rotating rod 8. Then, the electric rotating rod 8 is started to drive the stirring blades 9 to rotate, so that multiple stirring blades 9 can stir the high-viscosity wet gel inside the high-pressure reactor 1 in all directions, thereby improving the solvent replacement efficiency inside the high-pressure reactor 1.

[0036] As the working time of the drive motor 4 increases, the surface temperature of the drive motor 4 will gradually rise. The wet gel inside the cooling box 10 can cool the drive motor 4. At the same time, the drive motor 4 can also preheat the wet gel inside the cooling box 10. In this way, the subsequent replacement process of the wet gel with the high-pressure supercritical fluid can be accelerated, thereby shortening the drying time.

[0037] By setting multiple infrared radiation heating tubes 15, the wet gel can be directly radiated and heated to form a synergistic effect of external and internal heat, thereby improving the heating rate of the wet gel.

[0038] When the high-pressure reactor 1 processes wet gel and high-pressure supercritical fluid, the pressure sensor 7 is set to monitor the internal pressure of the high-pressure reactor 1 in real time and display it intuitively on the display screen 14. In this way, the staff can know the internal pressure of the high-pressure reactor 1 more clearly and prevent the internal pressure of the high-pressure reactor 1 from exceeding the threshold.

[0039] By setting a sealing ring 13 made of fluororubber, the sealing ring 13 can have stronger corrosion resistance and better sealing performance.

[0040] By setting a second solenoid valve 17, the opening and closing of the discharge pipe 16 can be automatically controlled, thereby further improving the automation level of the equipment.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A supercritical drying apparatus for aerogel materials, comprising a high-pressure reactor (1), characterized in that: The high-pressure reactor (1) is fixedly connected to a support leg (2) at the bottom. The side wall of the high-pressure reactor (1) is connected to a feed pipe (3). The top of the high-pressure reactor (1) is fixedly connected to a drive motor (4). The bottom of the drive motor (4) is fixedly connected to a transmission shaft (5). The bottom of the transmission shaft (5) is fixedly connected to a fixed inclined plate (6). One side of the fixed inclined plate (6) is fixedly connected to an electric rotating rod (8). The side wall of the electric rotating rod (8) is fixedly connected to multiple stirring blades (9). The multiple stirring blades (9) are arranged at equal intervals. The bottom of the high-pressure reactor (1) is connected to a discharge pipe (16). The top of the high-pressure reactor (1) is fixedly connected to a cooling box (10). The bottom of the cooling box (10) is connected to a conveying pipe (11).

2. The supercritical drying apparatus for aerogel materials according to claim 1, characterized in that: The inner wall of the cooling box (10) is fixedly connected to the side wall of the drive motor (4), and the first solenoid valve (12) is provided on the material conveying pipe (11).

3. The supercritical drying apparatus for aerogel materials according to claim 1, characterized in that: The high-pressure reactor (1) has multiple infrared radiation heating tubes (15) fixedly connected to its side wall, and the multiple infrared radiation heating tubes (15) are arranged at equal intervals.

4. The supercritical drying apparatus for aerogel materials according to claim 1, characterized in that: A pressure sensor (7) is fixedly connected to the bottom of the fixed inclined plate (6), and a display screen (14) is fixedly connected to the side wall of the high-pressure reactor (1).

5. The supercritical drying apparatus for aerogel materials according to claim 1, characterized in that: The high-pressure reactor (1) is fixedly connected to a sealing ring (13) on its side wall. The side wall of the sealing ring (13) is rotatably connected to the side wall of the drive shaft (5). The sealing ring (13) is made of fluororubber.

6. The supercritical drying apparatus for aerogel materials according to claim 5, characterized in that: The discharge pipe (16) is equipped with a second solenoid valve (17), and the side wall of the sealing ring (13) is fixedly connected to the side wall of the conveying pipe (11).

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