Continuous drying device for aerogel material

Abstract

The utility model discloses an aerogel material continuous drying device which comprises a workbench, the top of the workbench is fixedly connected with a drying kettle and a buffer kettle, and the drying kettle is located on the left side of the buffer kettle. By arranging a drying kettle, a buffer kettle, a feeding pipe, a heating plate, a pressure sensor, a temperature sensor, a front connecting pipe, a front sucking pump, a front connecting valve, a rear connecting pipe, a rear sucking pump, a rear connecting valve, a drying box, a drying pipe, a booster pump, a booster pipe and an exhaust pipe, an aerogel mixture is put into the drying kettle, and the interior of the drying kettle is heated and pressurized to complete drying. The method comprises the following steps of: adding a new mixture into a drying kettle, discharging high-temperature and high-pressure gas into a buffer kettle, discharging the aerogel in the drying kettle, adding the new mixture, feeding the gas in the buffer kettle back into the drying kettle, and drying the aerogel in the drying kettle again, so that the heating and pressurizing time is greatly shortened, the continuous drying of the aerogel is realized, and the drying efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aerogel production, in particular to a continuous drying device for aerogel materials. Background Art

[0002] Aerogel is a lightweight, porous solid material with a controllable structure composed of colloidal particles or polymer molecules that are aggregated together. It has the characteristics of ultra-low density, extremely high porosity and large specific surface area, as well as low dielectric constant and low thermal conductivity. Due to the large number of pores inside, the volume density of aerogel is very small, and it is one of the lightest solid materials known. However, due to the excessive number of pores inside, it contains a large amount of water. Existing aerogels are generally dried by supercritical drying.

[0003] In the existing supercritical drying method of aerogel, the aerogel is generally dried by mixing aerogel with anhydrous ethanol, replacing the water inside the aerogel with anhydrous ethanol, and then separating the anhydrous ethanol from the aerogel through high temperature and high pressure. However, this method requires repeated heating and pressurization of the drying device, which takes a lot of time and makes it impossible to achieve rapid and continuous drying, resulting in low efficiency in the preparation of aerogel. Utility Model Content

[0004] The utility model provides a continuous drying device for aerogel materials, wherein a mixture of aerogels is put into a drying kettle, and the temperature and pressurization in the drying kettle are increased to complete drying, and then the high-temperature and high-pressure gas is discharged into a buffer kettle, and a new mixture is added after the aerogel in the drying kettle is discharged, and then the gas in the buffer kettle is returned to the drying kettle, and the aerogel in the drying kettle is dried again, thereby greatly reducing the heating and pressurization time, realizing continuous drying of the aerogel, and greatly improving the drying efficiency.

[0005] In order to achieve the above-mentioned purpose, a continuous drying device for aerogel materials is provided, comprising: a workbench, a drying kettle and a buffer kettle are fixedly connected to the top of the workbench, the drying kettle is located on the left side of the buffer kettle, a feed pipe is fixedly connected to the top of the drying kettle, a discharge pipe is fixedly connected to the bottom of the drying kettle, a heating plate is fixedly connected to the inner side wall of the drying kettle, a pressure sensor and a temperature sensor are fixedly connected to the inner top surface of the drying kettle, a front connecting pipe and a rear connecting pipe are fixedly connected between the drying kettle and the buffer kettle, and the circumferential surface of the front connecting pipe is fixedly connected to the buffer kettle. A front vacuum pump and a front connecting valve are fixedly connected, a rear vacuum pump and a rear connecting valve are fixedly connected on the circumferential surface of the rear connecting pipe, a drying box is arranged on the left side of the drying kettle, the right side wall of the drying box is fixedly connected to the drying kettle through a drying pipe, a booster pump is arranged in front of the drying box, the booster pump is fixedly connected to the drying kettle through a booster pipe, an exhaust pipe is fixedly connected on the circumferential surface of the buffer kettle, a pressure relief valve is arranged on the circumferential surface of the exhaust pipe, the exhaust pipe is located on the right side of the front connecting pipe and the rear connecting pipe, and a support is fixedly connected to the bottom of the workbench.

[0006] According to the aerogel material continuous drying device, the front air pump, the rear air pump, the drying box and the booster pump are all fixedly connected to the workbench.

[0007] According to the aerogel material continuous drying device, valves are arranged on the circumferential surfaces of the feed pipe, the discharge pipe, the drying pipe, the boost pipe and the exhaust pipe.

[0008] According to the aerogel material continuous drying device, the number of the pillars is multiple and evenly distributed at the four corners of the bottom of the workbench.

[0009] According to the aerogel material continuous drying device, the heating plate, the pressure sensor, the temperature sensor front connecting valve and the rear connecting valve are all electrically connected to the external controller.

[0010] According to the aerogel material continuous drying device, the exhaust pipe is connected to an external refrigeration system.

[0011] The beneficial effects of the utility model include: by arranging a drying kettle, a buffer kettle, a feed pipe, a heating plate, a pressure sensor, a temperature sensor, a front connecting pipe, a front air pump, a front connecting valve, a rear connecting pipe, a rear air pump, a rear connecting valve, a drying box, a drying pipe, a booster pump, a booster pipe and an exhaust pipe, a mixture of aerogels is put into a drying kettle, and the temperature and pressurization in the drying kettle are increased to complete drying, and then the high-temperature and high-pressure gas is discharged into the buffer kettle, and a new mixture is added after the aerogel in the drying kettle is discharged, and then the gas in the buffer kettle is returned to the drying kettle, and the aerogel in the drying kettle is dried again, thereby greatly reducing the heating and pressurizing time, realizing continuous drying of the aerogel, and greatly improving the drying efficiency.

[0012] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0014] Figure 1 This is a front view of a continuous drying device for aerogel materials according to the utility model;

[0015] Figure 2 This is a rear view of a continuous drying device for aerogel materials according to the utility model;

[0016] Figure 3 This is a cross-sectional view of a drying kettle of a continuous drying device for aerogel materials of the utility model;

[0017] Figure 4 This is a top view of a continuous drying device for aerogel materials according to the utility model.

[0018] Legend:

[0019] 1. Workbench; 2. Drying kettle; 3. Buffer kettle; 4. Feed pipe; 5. Discharge pipe; 6. Heating plate; 7. Pressure sensor; 8. Temperature sensor; 9. Front connecting pipe; 10. Front vacuum pump; 11. Front connecting valve; 12. Rear connecting pipe; 13. Rear vacuum pump; 14. Rear connecting valve; 15. Drying box; 16. Drying tube; 17. Booster pump; 18. Booster tube; 19. Exhaust pipe; 20. Support. DETAILED DESCRIPTION

[0020] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0021] Reference Figure 1-4The utility model embodiment is a continuous drying device for aerogel materials, which comprises: a workbench 1, a drying kettle 2 and a buffer kettle 3 are fixedly connected to the top of the workbench 1, the drying kettle 2 is located on the left side of the buffer kettle 3, a feeding pipe 4 is fixedly connected to the top of the drying kettle 2, a discharging pipe 5 is fixedly connected to the bottom of the drying kettle 2, a heating plate 6 is fixedly connected to the inner side wall of the drying kettle 2, a pressure sensor 7 and a temperature sensor 8 are fixedly connected to the inner top surface of the drying kettle 2 to monitor the temperature and pressure in the drying kettle 2, a front connecting pipe 9 and a rear connecting pipe 12 are fixedly connected between the drying kettle 2 and the buffer kettle 3, a front vacuum pump 10 and a front connecting valve 11 are fixedly connected to the circumferential surface of the front connecting pipe 9, and a A rear vacuum pump 13 and a rear connecting valve 14, a drying box 15 is arranged on the left side of the drying kettle 2, and the right side wall of the drying box 15 is fixedly connected to the drying kettle 2 through a drying pipe 16, which is used to dry the gas entering the drying kettle 2 from the outside, and a booster pump 17 is arranged in front of the drying box 15, and the booster pump 17 is fixedly connected to the drying kettle 2 through a booster pipe 18, an exhaust pipe 19 is fixedly connected to the circumferential surface of the buffer kettle 3, a pressure relief valve is arranged on the circumferential surface of the exhaust pipe 19, the exhaust pipe 19 is connected to the external refrigeration system, and the exhaust pipe 19 is located on the right side of the front connecting pipe 9 and the rear connecting pipe 12, and a pillar 20 is fixedly connected to the bottom of the workbench 1, and the number of the pillars 20 is set in plurality and is evenly distributed at the four corners of the bottom of the workbench 1.

[0022] The front vacuum pump 10, the rear vacuum pump 13, the drying box 15 and the booster pump 17 are all fixedly connected to the workbench 1. Valves are arranged on the circumferential surfaces of the feed pipe 4, the discharge pipe 5, the drying pipe 16, the booster pipe 18 and the exhaust pipe 19. The front connecting valve 11 and the rear connecting valve 14 of the heating plate 6, the pressure sensor 7 and the temperature sensor 8 are all electrically connected to the external controller.

[0023] Working principle: put the aerogel mixture into the drying kettle 2, start the heating plate 6 and the booster pump 17 to increase the temperature and pressure in the drying kettle 2. The high temperature and high pressure vaporize the anhydrous ethanol and the water and separate them from the aerogel, so that the aerogel is completely dried. Start the front vacuum pump 10 to discharge the gas in the drying kettle 2 into the buffer kettle 3. At this time, the rear connecting valve 14 is closed, and the buffer kettle 3 can retain most of the pressure and temperature. When the gas in the drying kettle 2 is completely discharged, open the valve on the drying pipe 16 to cool the aerogel in the drying kettle 2. After being discharged from the discharge pipe 5, a new aerogel mixture is added from the feed pipe 4, and the gas in the buffer kettle 3 is sent back to the drying kettle 2 through the rear vacuum pump 13 and the rear connecting pipe 12. At this time, the front connecting valve 11 is closed, and the aerogel in the drying kettle 2 is dried again. Such repeated operations can retain most of the heat and pressure, thereby realizing continuous and rapid drying of the aerogel. When the pressure in the buffer kettle 3 is too high, the pressure relief valve on the exhaust pipe 19 is opened to discharge part of the gas into the external refrigeration system to recover the anhydrous ethanol.

[0024] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A continuous drying device for aerogel materials, comprising: A workbench (1), characterized in that a drying kettle (2) and a buffer kettle (3) are fixedly connected to the top of the workbench (1), the drying kettle (2) is located on the left side of the buffer kettle (3), a feed pipe (4) is fixedly connected to the top of the drying kettle (2), a discharge pipe (5) is fixedly connected to the bottom of the drying kettle (2), a heating plate (6) is fixedly connected to the inner side wall of the drying kettle (2), a pressure sensor (7) and a temperature sensor (8) are fixedly connected to the inner top surface of the drying kettle (2), a front connecting pipe (9) and a rear connecting pipe (12) are fixedly connected between the drying kettle (2) and the buffer kettle (3), a front vacuum pump (10) and a front connecting valve (11) are fixedly connected to the circumferential surface of the front connecting pipe (9), A rear air extraction pump (13) and a rear connecting valve (14) are fixedly connected on the circumferential surface of the rear connecting pipe (12); a drying box (15) is arranged on the left side of the drying kettle (2); the right side wall of the drying box (15) is fixedly connected to the drying kettle (2) via a drying pipe (16); a booster pump (17) is arranged in front of the drying box (15); the booster pump (17) is fixedly connected to the drying kettle (2) via a booster pipe (18); an exhaust pipe (19) is fixedly connected on the circumferential surface of the buffer kettle (3); a pressure relief valve is arranged on the circumferential surface of the exhaust pipe (19); the exhaust pipe (19) is located on the right side of the front connecting pipe (9) and the rear connecting pipe (12); and a support (20) is fixedly connected to the bottom of the workbench (1).

2. The continuous drying device for aerogel materials according to claim 1, characterized in that: The front air suction pump (10), the rear air suction pump (13), the drying box (15) and the booster pump (17) are all fixedly connected to the workbench (1).

3. The continuous drying device for aerogel materials according to claim 1, characterized in that: Valves are arranged on the circumferential surfaces of the feed pipe (4), the discharge pipe (5), the drying pipe (16) and the boost pipe (18).

4. The continuous drying device for aerogel materials according to claim 1, characterized in that: The number of the pillars (20) is multiple and evenly distributed at the four corners of the bottom of the workbench (1).

5. The continuous drying device for aerogel materials according to claim 1, characterized in that: The heating plate (6), the pressure sensor (7), the temperature sensor (8), the front connecting valve (11) and the rear connecting valve (14) are all electrically connected to an external controller.

6. The aerogel material continuous drying device according to claim 1, characterized in that: The exhaust pipe (19) is connected to an external refrigeration system.

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