An aerogel powder drying device and method

Abstract

The present invention relates to the technical field of aerogel powder drying equipment, and specifically relates to an aerogel powder drying equipment and method, which includes a drying barrel. A sealing cover is detachably installed at the upper end of the drying barrel. A central tube is fixedly installed at the inner end of the drying barrel. A feeding hole is formed on the outer surface of the central tube, and the feeding hole is located below the inner side of the drying barrel. An inner cylinder is fixedly installed at the inner end of the drying barrel. A partition net is fixedly installed at the upper end of the inner cylinder. A stabilizing plate is fixedly installed at the inner end of the inner cylinder. A plurality of crushing boxes are fixedly installed at the bottom end of the stabilizing plate. A crushing device capable of disassembling the agglomerated aerogel powder is arranged inside each crushing box. A plurality of evaporation barrels are fixedly installed at the bottom end of the stabilizing plate, and the evaporation barrels are located between two crushing boxes. Through the vibration of the fine screen, the agglomerated aerogel powder is vibrated, so that the agglomerated aerogel powder is scattered under the action of vibration, and finally the efficiency during the drying process is maximized.

Description

Technical Field

[0001] The present invention relates to the technical field of aerogel powder drying equipment, and particularly to an aerogel powder drying equipment and method. Background Art

[0002] Aerogel is a porous material with low density, high specific surface area, high porosity and good thermal insulation performance. Due to its excellent properties, aerogel is widely used in fields such as thermal insulation, catalyst carriers, adsorption materials, sensors, etc. However, in the preparation process of aerogel, especially in the drying link, there are often some technical problems. In the traditional aerogel preparation process, the sol-gel method is used to synthesize aerogel, and the solvent is removed by supercritical drying technology to obtain the final aerogel material. Although supercritical drying can effectively avoid the structural collapse of aerogel, its equipment is complex, costly and energy-consuming, resulting in limited application of this technology in large-scale production.

[0003] After retrieval, it is found that the prior art publication number is CN 118442779 A, which discloses an aerogel powder drying equipment and method, including a water dripping prevention mechanism. The water dripping prevention mechanism also includes a tank body. An annular mounting block is fixedly sleeved on the outer wall of the tank body, and a heating coil is fixedly connected to the inner wall of the annular mounting block; this solution utilizes the circular top of the dome. When the water in the aerogel powder evaporates to form water droplets, they will move outward along the inner wall of the dome, avoiding the water droplets at the top from dripping down into the aerogel powder. When drying the aerogel powder, the heating coil heats the air in the tank body, so that the water in the aerogel powder evaporates into water vapor. The water vapor will move upward and contact the inner wall of the top of the dome. When the high-temperature and high-humidity gas contacts the cold air, small water droplets will be generated and adsorbed on the inner wall of the dome. The small water droplets will be affected by the shape of the dome and flow downward along the inner wall of the dome to the annular inclined plate.

[0004] Therefore, based on the above retrieval and in combination with the existing technology, when the above solution is used, scraping the inner wall of the tank body with a scraper will cause a problem. The outer surface of the support arm connected to the scraper will also be contaminated with aerogel powder. Then, when the aerogel powder is first poured in, it will adhere to the outer surface of the support arm, making the cleaning work need to be carried out more frequently. Especially in a high-humidity and high-dust environment, the cleaning operation is more cumbersome, which will gradually increase the wear of the scraper and the support arm. Over time, the materials of the scraper or the support arm may age, be damaged, or even need to be replaced, increasing the cost and frequency of equipment maintenance. For this reason, we propose an aerogel powder drying equipment and method. Summary of the Invention

[0005] The purpose of the present invention is to provide an aerogel powder drying equipment and method to solve the problems raised in the above background art.

[0006] To achieve the above object, the present invention provides the following technical solutions: An aerogel powder drying device and method, including a drying barrel, the upper end of the drying barrel is detachably installed with a sealing cover, the bottom end of the drying barrel is fixedly installed with a support frame, and a hot air blower is arranged on the right side of the support frame. A central pipe is fixedly installed inside the drying barrel, and the central pipe is fixedly connected to the air outlet of the hot air blower through an air delivery pipe. The outer surface of the central pipe is provided with a feeding hole, and the feeding hole is located below the inner side of the drying barrel. An inner barrel is fixedly installed inside the drying barrel, and a partition net capable of screening out agglomerated aerogel powder is fixedly installed at the upper end of the inner barrel. A stabilizing plate is fixedly installed inside the inner barrel, and a plurality of crushing boxes are fixedly installed at the bottom end of the stabilizing plate. A crushing device capable of disassembling the agglomerated aerogel powder is arranged inside each crushing box. A plurality of evaporation barrels are fixedly installed at the bottom end of the stabilizing plate, and the evaporation barrels are located between two crushing boxes.

[0007] As a further solution of the present invention, the crushing device includes a coarse sieve mesh, the coarse sieve mesh is fixedly installed at the upper end of the discharge shell through bolts, a fine sieve mesh is arranged below the coarse sieve mesh, and the coarse sieve mesh and the fine sieve mesh are connected through a matching sleeve. The bottom end of the fine sieve mesh is fixedly installed with a discharge shell, and the discharge shell is slidably connected to the crushing box. By arranging the coarse sieve mesh and the fine sieve mesh, larger particles can be preliminarily screened first, and then smaller particles can be finely crushed and screened, gradually reducing the size of the large materials, thereby improving the overall crushing efficiency and uniformity.

[0008] As a further solution of the present invention, a vibrating rack is fixedly installed at one end of the crushing box close to the fine sieve mesh, a sliding block is slidably installed at the rear end of the fine sieve mesh, the sliding block corresponds to the vibrating rack, a contact wheel is rotatably installed at the bottom end of the sliding block, and the outer surface of the contact wheel is in contact with the outer surface of the teeth above the vibrating rack. Through the cooperation of the vibrating rack and the sliding block, uniform vibration can be generated above the fine sieve mesh, thereby effectively dispersing the agglomerated aerogel powder, helping to reduce the agglomeration phenomenon of the aerogel powder, and improving the solution efficiency.

[0009] As a further solution of the present invention, a partition board is fixedly installed inside the evaporation barrel, a boiling cavity is arranged between the lower part of the partition board and the evaporation barrel, a heat conduction pipe is fixedly connected to the outer surface of the evaporation barrel, and one end of the heat conduction pipe far away from the evaporation barrel is closely attached to the outer wall of the central pipe. A guiding pipe is fixedly connected to the upper end of the partition board, a limiting plate is fixedly installed at the upper end inside the guiding pipe, and a gas discharge pipe is fixedly installed at the bottom end of the limiting plate.

[0010] As a further solution of the present invention, a movable plug is slidably sleeved on the outer surface of the air release pipe, and the movable plug is connected to the limiting plate through a return spring. After the gas inside the boiling chamber expands, the movable plug is pushed upward. The movable plug is connected to the limiting plate through the return spring, and the expanding gas can push the movable plug upward to automatically release excessive gas.

[0011] As a further solution of the present invention, an air release cavity is provided at the inner end of the air release pipe. The air release cavity is located at the upper inner side of the air release pipe. A guide rod is inserted through the inner end of the air release pipe. The guide rod is located below the air release cavity. An activity cavity is provided at the inner end of the air release pipe. A movable ring is fixedly installed on the outer surface of the guide rod, and the movable ring is located inside the activity cavity.

[0012] As a further solution of the present invention, a rectangular hole is provided on the outer surface of the air release pipe. An unlocking block is slidably installed in the rectangular hole. A triangular block is fixedly installed at the left end of the unlocking block. The inclined surface of the triangular block contacts the upper end of the movable ring. An air release hole is provided on the outer surface of the air release pipe, and the air release hole is communicated with the air release cavity. A sealing ball is provided inside the air release cavity, and the sealing ball is connected to the guide rod through a return wire. The unlocking block in the rectangular hole can accurately control the movement of the movable ring by contacting the inclined surface of the triangular block. When the gas pressure reaches the preset value, the cooperation of the unlocking block and the triangular block makes the air release process more accurate, avoiding problems such as excessive gas release or untimely air release, thereby ensuring the stable operation of the equipment.

[0013] As a further solution of the present invention, a cooling barrel is fixedly installed at the right end of the guide pipe. A pressure relief pipe is fixedly connected to the upper end of the cooling barrel. The free end of the pressure relief pipe is fixedly connected to the air release pipe. A diversion pipe is fixedly connected to the bottom end of the cooling barrel, and the diversion pipe is communicated with the isolation plate. A heat-resistant sleeve is slidably installed inside the cooling barrel. The pressure relief pipe of the cooling barrel is connected to the air release pipe. By releasing the excessive gas pressure through the air release pipe, the cooling barrel can effectively reduce the temperature inside the equipment through the cooling medium flowing inside it.

[0014] As a further solution of the present invention, a traction rod is fixedly installed at the bottom end of the heat-resistant sleeve, and a siphon cover is fixedly installed at the end of the traction rod away from the heat-resistant sleeve. A rubber ring with buoyancy is fixedly installed inside the heat-resistant sleeve.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. When the present invention is used, through the vibration of the fine screen, the agglomerated aerogel powder is vibrated, so that the agglomerated aerogel powder is dispersed under the action of vibration, and finally the efficiency in the drying process is maximized;

[0017] 2. When the present invention is in use, the aerogel powder is blown out by blowing high-speed hot air flow from bottom to top and forms a scattered state, which greatly increases the contact area between the powder and hot air, improves the heat transfer efficiency, and at the same time can avoid the particles from adhering to each other in lumps due to moisture or static electricity adsorption, helping to maintain the particle uniformity and fluidity of the product;

[0018] 3. The present invention also has the ability to reduce the adhesion problem to the drying cylinder wall under the push of the scattered powder in the hot air flow, reduce the difficulty of cleaning and maintenance. At the same time, the powder is in a suspended state, increasing the volume utilization rate of the drying cylinder, and can handle a larger batch of materials without increasing the equipment volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of an aerogel powder drying device;

[0020] Figure 2 is a schematic structural diagram inside the drying barrel;

[0021] Figure 3 is a schematic structural diagram at the stabilizing disk;

[0022] Figure 4 is an exploded view of the crushing device;

[0023] Figure 5 is a schematic structural diagram at the vibrating rack;

[0024] Figure 6 is a schematic structural diagram inside the stabilizing disk;

[0025] Figure 7 is a schematic structural diagram at the wire wheel and the negative pressure sleeve;

[0026] Figure 8 is a schematic structural diagram inside the guide pipe;

[0027] Figure 9 is a schematic structural diagram inside the evaporation barrel;

[0028] Figure 10 is a schematic structural diagram inside the air discharge pipe;

[0029] Figure 11 is a schematic structural diagram inside the cooling barrel;

[0030] Figure 12 is an enlarged schematic structural diagram inside the cooling barrel.

[0031] In the figure: 1. Drying barrel; 2. Sealing cover; 3. Support frame; 4. Discharge cover; 5. Hot air blower; 6. Air delivery pipe;

[0032] 101. Central pipe; 102. Feed hole; 103. Partition net; 104. Inner cylinder;

[0033] 201, Stable disk; 202, Crushing box; 203, Coarse sieve; 204, Fitting sleeve; 205, Fine sieve; 206, Discharge housing; 207, Thread spool; 208, Return line; 209, Traction line; 210, Vibration rack; 211, Slide block; 212, Screw rod; 213, Negative pressure sleeve;

[0034] 301, Evaporation barrel; 302, Heat conduction tube; 303, Boiling chamber; 304, Partition board; 305, Guide tube; 306, Limiting plate; 307, Air release pipe; 308, Return spring; 309, Movable plug; 310, Air release chamber; 311, Sealing ball; 312, Movable ring; 313, Locking spring; 314, Unlocking block; 315, Guide rod; 316, Return line; 317, Air release hole;

[0035] 401, Cooling barrel; 402, Pressure relief pipe; 403, Diversion pipe; 404, Heat resistant sleeve; 405, Traction rod; 406, Siphon cover; 407, Rubber ring; 408, Sealing ring; 409, Conduction groove; 410, Synchronous rod. Detailed implementation mode

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] Embodiment 1: Please refer to Figures 1 to 4 , An aerogel powder drying device and method, including a drying barrel 1. The upper end of the drying barrel 1 is detachably installed with a sealing cover 2 through a buckle. By opening the sealing cover 2, aerogel powder can be poured into the drying barrel 1 from above. The bottom end of the drying barrel 1 is fixedly installed with a support frame 3 through bolts, and a hot air blower 5 (the hot air blower 5 can blow out high-speed hot air flow to blow and dry the aerogel powder inside the drying barrel 1) is arranged on the right side of the support frame 3. A central pipe 101 is fixedly installed inside the drying barrel 1. The bottom end of the central pipe 101 is fixedly sleeved with a discharge cover 4 through a buckle, and the central pipe 101 is fixedly connected to the air outlet of the hot air blower 5 through an air delivery pipe 6. The outer surface of the central pipe 101 is provided with a feeding hole 102, and the feeding hole 102 is located below the inner side of the drying barrel 1. Specifically, the inner bottom end of the drying barrel 1 is conical, so that the aerogel powder can flow more quickly into the feeding hole 102 under the action of gravity;

[0038] An inner cylinder 104 is fixedly installed at the inner end of the drying barrel 1. A partition net 103 capable of screening out agglomerated aerogel powder is fixedly installed at the upper end of the inner cylinder 104. The partition net 103 is conical. When the aerogel powder is blown upward from the central tube 101 until it collides with the lower part of the partition net 103, the agglomerated aerogel powder is blocked, and the rest is screened out by the partition net 103. A stabilizing disk 201 is fixedly installed at the inner end of the inner cylinder 104. A plurality of crushing boxes 202 are fixedly installed at the bottom end of the stabilizing disk 201. Crushing devices capable of disassembling the agglomerated aerogel powder are arranged inside the crushing boxes 202. A plurality of evaporation barrels 301 are fixedly installed at the bottom end of the stabilizing disk 201. The evaporation barrels 301 are located between two crushing boxes 202;

[0039] As Figure 3 - Figure 5 shown, the crushing device includes a coarse screen 203. The coarse screen 203 is fixedly installed at the upper end of the discharge housing 206 by bolts. A fine screen 205 is arranged below the coarse screen 203. The coarse screen 203 and the fine screen 205 are connected by a mating sleeve 204. The mating sleeve 204 is a high-temperature resistant rubber sleeve, has anti-fatigue characteristics, and also has a certain elasticity. When the agglomerated aerogel powder falls from the coarse screen 203 onto the upper part of the fine screen 205, then through the continuous vibration of the fine screen 205 and the continuous impact under multiple agglomerated aerogel powders and below the coarse screen 203, the agglomerated aerogel powder is dispersed and screened out by the fine screen 205;

[0040] The bottom end of the fine screen 205 is fixedly welded with a discharge housing 206. The discharge housing 206 is slidably connected with the crushing box 202. The discharge housing 206 slides up and down in the crushing box 202. A vibration rack 210 is fixedly installed at one end of the crushing box 202 close to the fine screen 205. A sliding block 211 is slidably installed at the rear end of the fine screen 205. The sliding block 211 corresponds to the vibration rack 210. A contact wheel is rotatably installed at the bottom end of the sliding block 211. The outer surface of the contact wheel contacts the outer surface of the upper teeth of the vibration rack 210. Then when the sliding block 211 moves and contacts the upper teeth of the vibration rack 210, a vibration effect is generated.

[0041] Example 2: Please refer to Figure 6 、 Figure 8 、 Figure 9 、 Figure 10, An aerogel powder drying device and method. Based on Example 1, a partition plate 304 is fixedly installed at the inner end of the evaporation barrel 301. A boiling chamber 303 is provided between the lower part of the partition plate 304 and the evaporation barrel 301. A heat conduction pipe 302 is fixedly connected to the outer surface of the evaporation barrel 301, and one end of the heat conduction pipe 302 away from the evaporation barrel 301 is closely attached to the outer wall of the central pipe 101 (the central pipe 101 is made of metal). Both the boiling chamber 303 and the inside of the heat conduction pipe 302 are filled with an easily boiling liquid (such as perfluoromethylcyclohexane liquid, the boiling point of this liquid is around 50°C - 60°C, and it is not flammable). The upper end of the partition plate 304 is fixedly connected to a guide pipe 305. A limiting plate 306 is fixedly installed at the upper inner side of the guide pipe 305, and an air release pipe 307 is fixedly welded to the bottom end of the limiting plate 306;

[0042] A movable plug 309 is slidably sleeved on the outer surface of the air release pipe 307. Specifically, a rectangular block is fixedly installed at the inner end of the movable plug 309. A rectangular groove is formed on the outer surface of the air release pipe 307, and the rectangular block is located in the rectangular groove, so that when the movable plug 309 moves up and down on the outer surface of the air release pipe 307, it will not rotate. A high-temperature resistant sealing ring is fixedly sleeved on the outer surface of the movable plug 309 and is closely attached to the inner wall of the guide pipe 305 to increase airtightness. The movable plug 309 and the limiting plate 306 are connected by a return spring 308. After the gas in the boiling chamber 303 expands, it pushes the movable plug 309 upward, and then compresses the return spring 308;

[0043] As Figure 5 、 Figure 7 、 Figure 8 、 Figure 9 shown, more specifically, a wire wheel 207 is rotatably installed at one end of the crushing box 202 away from the central pipe 101. A return material wire 208 is wound around the outer surface of the wire wheel 207, and the free end of the return material wire 208 is fixedly connected to the right end of the sliding block 211. A traction wire 209 is fixedly connected to the upper end of the movable plug 309. A wire hole is formed at the inner end of the limiting plate 306, and the traction wire 209 passes through the wire hole and is fixedly connected to the left end of the sliding block 211. A sliding hole is formed at the inner end of the central pipe 101. A negative pressure sleeve 213 is slidably installed in the sliding hole, and a limiting block is fixedly installed on the outer surface of the negative pressure sleeve 213. A limiting groove is formed in the sliding hole, and the limiting block is located in the limiting groove, so that the negative pressure sleeve 213 will not rotate during the sliding process. A spiral rod 212 is welded to one end of the wire wheel 207 close to the negative pressure sleeve 213, and a convex block is fixedly installed at the inner end of the negative pressure sleeve 213. The convex block is embedded in the chute on the outer surface of the spiral rod 212, so that when the negative pressure sleeve 213 slides, the spiral rod 212 can rotate;

[0044] Please refer to Figure 9 、 Figure 10, an air release cavity 310 is formed at the inner end of the air release pipe 307. The air release cavity 310 is located at the upper inner side of the air release pipe 307. A guide rod 315 is inserted through the inner end of the air release pipe 307. The guide rod 315 is located below the air release cavity 310. A plurality of stabilizing blocks are fixedly installed on the outer surface of the guide rod 315. The stabilizing blocks are in contact with the inner wall of the air release pipe 307, enabling the guide rod 315 to always maintain stability. It should be noted that the diameter of the guide rod 315 is smaller than the inner diameter of the air release pipe 307, and the outer surface of the guide rod 315 does not contact the inner wall of the air release pipe 307. An activity cavity is formed at the inner end of the air release pipe 307. An activity ring 312 is fixedly installed on the outer surface of the guide rod 315. The activity ring 312 is located within the activity cavity. The activity ring 312 is connected to the air release pipe 307 through a locking spring 313. A rectangular hole is formed on the outer surface of the air release pipe 307. An unlocking block 314 is slidably installed within the rectangular hole. A triangular block is fixedly installed at the left end of the unlocking block 314. The slope surface of the triangular block contacts the upper end of the activity ring 312. Then, when the unlocking block 314 moves leftward, under the extrusion of the triangular block, the activity ring 312 moves downward. If the activity plug 309 leaves from the position of the rectangular hole, then the activity ring 312 moves upward under the elastic force of the locking spring 313 and pushes the unlocking block 314 rightward;

[0045] An air release hole 317 is formed on the outer surface of the air release pipe 307. The air release hole 317 is communicated with the air release cavity 310. A sealing ball 311 is arranged inside the air release cavity 310. The sealing ball 311 is connected to the guide rod 315 through a reset wire 316. A heat-resistant sealing gasket is fixedly sleeved on the outer surface of the sealing ball 311. If the unlocking block 314 jams the activity ring 312, the guide rod 315 pulls the sealing ball 311 through the reset wire 316, making the sealing ball 311 unable to move. On the contrary, the guide rod 315 moves upward under the elastic force of the locking spring 313, making the reset wire 316 in a slack state. Then, when the activity plug 309 continuously moves upward and exposes the air release hole 317, the high-pressure gas quickly enters the air release cavity 310, and the high-speed air flow pushes the sealing ball 311 away.

[0046] Example 3: Please refer to Figure 9 , Figure 11 , Figure 12, an aerogel powder drying device and method. Based on Example 2, the right end of the guiding tube 305 is fixedly installed with a cooling barrel 401 through a clamp. The upper end of the cooling barrel 401 is fixedly connected with a pressure relief pipe 402. The free end of the pressure relief pipe 402 is fixedly connected with the air release pipe 307 and communicates with the air release cavity 310. The bottom end of the cooling barrel 401 is fixedly connected with a diversion pipe 403, and the diversion pipe 403 communicates with the partition plate 304. A heat-resistant sleeve 404 is slidably installed inside the cooling barrel 401. A plurality of holes are formed on the outer surface of the heat-resistant sleeve 404 to facilitate the downward flow of liquid. A traction rod 405 is fixedly installed at the bottom end of the heat-resistant sleeve 404, and a siphon cover 406 is fixedly installed at one end of the traction rod 405 away from the heat-resistant sleeve 404;

[0047] The upper end of the diversion pipe 403 passes through the inside of the cooling barrel 401 and extends upward for a certain distance. Then, when the liquid inside the cooling barrel 401 accumulates to a certain volume, the siphon cover 406 moves upward. Under the siphon effect, all the liquid inside the cooling barrel 401 can be discharged through the diversion pipe 403. A rubber ring 407 with buoyancy is fixedly installed inside the heat-resistant sleeve 404, and the heat-resistant sleeve 404 protects the rubber ring 407 to prevent the steam ejected from above from damaging the rubber ring 407. A sealing ring 408 is fixedly installed inside the diversion pipe 403. A synchronous rod 410 passes through the inner end of the sealing ring 408, and the upper end of the synchronous rod 410 is fixedly connected to the bottom end of the siphon cover 406. A conduction groove 409 is formed on the outer surface of the synchronous rod 410. When the synchronous rod 410 moves upward, the conduction groove 409 is located above the sealing ring 408, thereby realizing the flow of the liquid inside the cooling barrel 401 and preventing the high-pressure gas inside the boiling cavity 303 from flowing back through the diversion pipe 403.

[0048] The working principle of the present invention is:

[0049] During use, the wet aerogel powder is poured into the drying barrel 1, and the sealing cover 2 is fastened. Subsequently, the hot air blower 5 is started, and the high-speed hot air flow comes to the central tube 101 through the air delivery pipe 6. At this time, the aerogel powder flows through the inside of the central tube 101 along with the high-speed high-temperature air flow, and then sprays out from the upper part of the central tube 101. At this time, the powdery substance in a loose state will pass through the partition net 103, while the massive aerogel powder cannot pass through the partition net 103 and will then fall above the coarse sieve net 203 under the impact. Under the action of the temperature at the center of the central tube 101, the liquid inside the heat conduction tube 302 starts to boil, and the boiling pressure of the liquid increases, which begins to push the movable plug 309 upward;

[0050] As the movable plug 309 moves, the traction wire 209 starts to become slack. Under the action of the high-speed airflow in the central tube 101, the pressure becomes smaller, and the negative pressure sleeve 213 starts to move away from the crushing box 202. Since the negative pressure sleeve 213 starts to move, the screw rod 212 starts to rotate, driving the wire wheel 207 to rotate, and then pulling the sliding block 211 to move through the return material line 208. Subsequently, the fine sieve 205 starts to vibrate, shaking the agglomerated aerogel powder loose. The shaken aerogel powder is then screened out by the fine sieve 205 and then falls to the inner bottom end of the drying barrel 1;

[0051] Meanwhile, as the movable plug 309 continues to move upward until the air vent hole 317 is exposed, the high-pressure gas inside the boiling chamber 303 will enter the air release chamber 310 through the air vent hole 317, and then enter the cooling barrel 401 through the pressure relief pipe 402. Subsequently, under the elastic force of the return spring 308, the movable plug 309 is quickly pushed downward, and by reciprocating the movement of the movable plug 309 in this way, the traction wire 209 pulls the sliding block 211 to move, achieving the effect of continuous vibration of the fine sieve 205;

[0052] Subsequently, by opening the discharge cover 4, the collection of the dried aerogel powder can be realized.

[0053] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. An aerogel powder drying device, comprising a drying barrel (1), characterized in that: The upper end of the drying barrel (1) is detachably mounted with a sealing cover (2); the lower end of the drying barrel (1) is fixedly mounted with a support frame (3), and a hot air blower (5) is arranged on the right side of the support frame (3); the inner end of the drying barrel (1) is fixedly mounted with a central tube (101), and the central tube (101) and the air outlet of the hot air blower (5) are fixedly connected via an air supply pipe (6); the outer surface of the central tube (101) is provided with a material inlet hole (102), and the material inlet hole (102) is located at the lower inner side of the drying barrel (1); the inner end of the drying barrel (1) is fixedly mounted with a central tube (101), and the central tube (101) and the air outlet of the hot air blower (5) are fixedly connected via an air supply pipe (6); the outer surface of the central tube (101) is provided with a material inlet hole (102), and the material inlet hole (102) is located at the lower inner side of the drying barrel (1); An inner cylinder (104) is fixedly installed, a separation net (103) capable of screening out agglomerated aerogel powder is fixedly installed on the upper end of the inner cylinder (104), a stabilizing plate (201) is fixedly installed on the inner end of the inner cylinder (104), a plurality of crushing boxes (202) are fixedly installed on the bottom end of the stabilizing plate (201), a crushing device capable of dismantling agglomerated aerogel powder is arranged inside the crushing boxes (202), a plurality of evaporation barrels (301) are fixedly installed on the bottom end of the stabilizing plate (201), and the evaporation barrel (301) is located between two crushing boxes (202); An isolation plate (304) is fixedly mounted on the inner end of the evaporation barrel (301); a boiling chamber (303) is provided between the bottom of the isolation plate (304) and the evaporation barrel (301); a heat conduction pipe (302) is fixedly connected to the outer surface of the evaporation barrel (301); an end of the heat conduction pipe (302) away from the evaporation barrel (301) is tightly fitted to the outer wall of the central tube (101); a guide tube (305) is fixedly connected to the upper end of the isolation plate (304); a limit plate (306) is fixedly mounted on the inner upper end of the guide tube (305); and a venting pipe (307) is fixedly mounted on the bottom end of the limit plate (306); A movable plug (309) is slidably sleeved on the outer surface of the air release pipe (307), and the movable plug (309) is connected to the limit plate (306) via a return spring (308). When the gas inside the boiling chamber (303) expands, the movable plug (309) is pushed upwards; An air release cavity (310) is provided at the inner end of the air release pipe (307), and the air release cavity (310) is located at the inner upper end of the air release pipe (307). A guide rod (315) is passed through the inner end of the air release pipe (307), and the guide rod (315) is located below the air release cavity (310). An active cavity is provided at the inner end of the air release pipe (307), and an active ring (312) is fixedly mounted on the outer surface of the guide rod (315), and the active ring (312) is located in the active cavity. A rectangular hole is provided on the outer surface of the air release pipe (307), an unlocking block (314) is slidably mounted in the rectangular hole, a triangular block is fixedly mounted on the left end of the unlocking block (314), the slope surface of the triangular block contacts the upper end of the movable ring (312), an air release hole (317) is provided on the outer surface of the air release pipe (307), the air release hole (317) is communicated with the air release chamber (310), a sealing ball (311) is provided inside the air release chamber (310), and the sealing ball (311) is connected to the guide rod (315) via a reset line (316).

2. The aerogel powder drying device according to claim 1, characterized in that: The crushing device comprises a coarse screen (203), the coarse screen (203) being fixedly mounted on the upper end of a discharge shell (206) by means of bolts, a fine screen (205) being arranged below the coarse screen (203), and the coarse screen (203) and the fine screen (205) being connected via a matching sleeve (204), a discharge shell (206) being fixedly mounted on the bottom end of the fine screen (205), and the discharge shell (206) being slidably connected to a crushing box (202).

3. The aerogel powder drying device according to claim 2, characterized in that: A vibrating rack (210) is fixedly mounted on one end of the crushing box (202) close to the fine screen (205), a sliding block (211) is slidably mounted on the rear end of the fine screen (205), the sliding block (211) corresponds to the vibrating rack (210), a contact wheel is rotatably mounted on the bottom end of the sliding block (211), and the outer surface of the contact wheel contacts the outer surface of the teeth on the upper side of the vibrating rack (210).

4. The aerogel powder drying device according to claim 3, characterized in that: A cooling barrel (401) is fixedly installed at the right end of the guide tube (305); a pressure relief pipe (402) is fixedly connected to the upper end of the cooling barrel (401); a free end of the pressure relief pipe (402) is fixedly connected to the air relief pipe (307); a flow guide pipe (403) is fixedly connected to the bottom end of the cooling barrel (401); the flow guide pipe (403) is connected to the isolation plate (304); and a heat-resistant sleeve (404) is slidably installed inside the cooling barrel (401).

5. The aerogel powder drying device according to claim 4, characterized in that: A traction rod (405) is fixedly mounted on the bottom end of the heat-resistant sleeve (404), and a siphon cover (406) is fixedly mounted on one end of the traction rod (405) away from the heat-resistant sleeve (404), and a buoyant rubber ring (407) is fixedly mounted inside the heat-resistant sleeve (404).

6. A method for using an aerogel powder drying device, used for the aerogel powder drying device according to claim 5, characterized in that: The following steps are involved: S1: The high-speed heat flow enters the central tube (101) through the air delivery pipe (6), and the aerogel powder flows through the central tube (101) along with the high-speed high-temperature air flow, and then is ejected from the top of the central tube (101). The loose powder will pass through the partition net (103), and the block aerogel powder will not be able to pass through the partition net (103). Then, the block aerogel powder will fall onto the top of the coarse screen (203) under the impact. Then, under the action of the temperature at the center of the central tube (101), the liquid inside the heat transfer tube (302) begins to boil, and the boiling pressure of the liquid increases, which starts to push the movable plug (309) to move upward; S2: When the sliding block (211) moves, the fine screen (205) starts to vibrate, thereby shaking off the agglomerated aerogel powder. The shaken aerogel powder is sieved out by the fine screen (205) and then falls into the inner bottom of the drying barrel (1).

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