Aerogel powder drying equipment and method

Abstract

The invention relates to the technical field of aerogel powder drying equipment, in particular to aerogel powder drying equipment and method.The aerogel powder drying equipment comprises a drying barrel, a sealing cover is detachably installed at the upper end of the drying barrel, a center pipe is fixedly installed at the inner end of the drying barrel, and a feeding hole is formed in the outer surface of the center pipe and located in the lower portion of the inner side of the drying barrel; an inner barrel is fixedly mounted at the inner end of the drying barrel, a separation net is fixedly mounted at the upper end of the inner barrel, a stabilizing disc is fixedly mounted at the inner end of the inner barrel, a plurality of grinding boxes are fixedly mounted at the bottom end of the stabilizing disc, grinding devices capable of disassembling caked aerogel powder are arranged in the grinding boxes, and a plurality of evaporation barrels are fixedly mounted at the bottom end of the stabilizing disc; and the evaporation barrel is located between the two grinding boxes, through vibration of the fine screen mesh, blocky aerogel powder is vibrated, the blocky aerogel powder is scattered under the vibration effect, and finally efficiency maximization in the drying process is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of aerogel powder drying equipment, and in particular 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 properties. Due to its excellent performance, aerogel is widely used in thermal insulation, catalyst carriers, adsorption materials, sensors and other fields. However, the preparation process of aerogel, especially the drying process, often faces some technical difficulties. In the traditional aerogel preparation process, aerogel is synthesized by the sol-gel method, 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-intensive, which limits the application of this technology in large-scale production.

[0003] After searching, it was found that the prior art publication number is CN 118442779 A, ​​which discloses an aerogel powder drying device and method, including an anti-drip mechanism, and the anti-drip mechanism also includes a tank body, an annular mounting block is fixedly sleeved on the outer wall of the tank body, and a heating ring is fixedly connected to the inner wall of the annular mounting block; the scheme uses the circular setting of the top of the dome, and the water in the aerogel powder evaporates to generate water droplets, which will move outward along the inner wall of the dome to prevent the top water droplets from dripping downward into the aerogel powder. When the aerogel powder is dried, the heating ring heats the air in the tank body, so that the water in the aerogel powder evaporates into water vapor, and the water vapor moves upward and contacts the inner wall of the top of the dome. When the high-temperature and high-humidity gas contacts the cold air, small water droplets are generated and adsorbed on the inner wall of the dome. The small water droplets are affected by the shape of the dome and flow downward along the inner wall of the dome and flow onto the annular inclined plate.

[0004] Therefore, based on the above search and in combination with the existing technology, when the above scheme is used, a scraper is used to scrape the inner wall of the tank body, which will cause a problem. The outer surface of the support arm connected to the scraper will also be stained with aerogel powder. Then, when the aerogel powder is first poured in, it will already adhere to the outer surface of the support arm, making the cleaning work need to be performed more frequently, especially in high humidity and high dust environments. The cleaning operation is more cumbersome, and the wear of the scraper and the support arm will gradually increase. Over time, the material 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 device and method. Summary of the invention

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

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an aerogel powder drying device and method, comprising a drying barrel, a sealing cover is detachably mounted on the upper end of the drying barrel, a support frame is fixedly mounted on the bottom end of the drying barrel, and a hot air blower is arranged on the right side of the support frame, a central tube is fixedly mounted on the inner end of the drying barrel, and the central tube is fixedly connected to the air outlet of the hot air blower through an air supply pipe, a feed hole is opened on the outer surface of the central tube, and the feed hole is located at the lower inner side of the drying barrel, an inner cylinder is fixedly mounted on the inner end of the drying barrel, a partition net capable of screening out agglomerated aerogel powder is fixedly mounted on the upper end of the inner cylinder, a stabilizing plate is fixedly mounted on the inner end of the inner cylinder, a plurality of crushing boxes are fixedly mounted on the bottom end of the stabilizing plate, a crushing device capable of dismantling agglomerated aerogel powder is arranged inside the crushing boxes, and a plurality of evaporating barrels are fixedly mounted on the bottom end of the stabilizing plate, and the evaporating barrel is located between two crushing boxes.

[0007] As a further solution of the present invention, the crushing device includes a coarse screen, which is fixedly installed on the upper end of the discharge shell by bolts, and a fine screen is arranged below the coarse screen, and the coarse screen and the fine screen are connected by a matching sleeve, and the bottom end of the fine screen is fixedly installed with a discharge shell, and the discharge shell is slidably connected to the crushing box. By arranging the coarse screen and the fine screen, larger particles can be preliminarily screened first, and then smaller particles can be finely crushed and screened, and the size of large pieces of material can be gradually reduced, 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 screen, and a sliding block is slidably installed at the rear end of the fine screen, and 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 contacts the outer surface of the teeth above the vibrating rack. The vibrating rack can generate uniform vibration above the fine screen through the cooperation with the sliding block, thereby effectively breaking up the agglomerated aerogel powder, which helps to reduce the agglomeration of aerogel powder and improve the solution efficiency.

[0009] As a further solution of the present invention, an isolation plate is fixedly installed on the inner end of the evaporating barrel, a boiling chamber is provided between the bottom of the isolation plate and the evaporating barrel, a heat conduction pipe is fixedly connected to the outer surface of the evaporating barrel, and the end of the heat conduction pipe away from the evaporating barrel is tightly fitted with the outer wall of the center tube, the upper end of the isolation plate is fixedly connected to a guide tube, a limiting plate is fixedly installed on the inner upper end of the guide tube, and an air release pipe is fixedly installed on the bottom end of the limiting plate.

[0010] As a further solution of the present invention, a movable plug is provided on the sliding sleeve of the outer surface of the vent pipe, and the movable plug is connected to the limit plate by a reset spring. After the gas inside the boiling chamber expands, the movable plug is pushed upward. The movable plug is connected to the limit plate by the reset spring. After the gas expands, it can push the movable plug to move upward, automatically releasing excess 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, and the air release cavity is located at the inner upper end of the air release pipe. A guide rod is passed through the inner end of the air release pipe, and the guide rod is located below the air release cavity. An movable cavity is provided at the inner end of the air release pipe, and a movable ring is fixedly installed on the outer surface of the guide rod, and the movable ring is located in the movable 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 on the left end of the unlocking block, the slope surface of the triangular block contacts the upper end of the movable ring, and an air release hole is provided on the outer surface of the air release pipe, the air release hole is connected to the air release chamber, and a sealing ball is provided inside the air release chamber, the sealing ball is connected to the guide rod through a reset line, and the unlocking block in the rectangular hole contacts the slope surface of the triangular block, which can accurately control the movement of the movable ring. When the gas pressure reaches the preset value, the cooperation of the unlocking block and the triangular block makes the deflation process more accurate, avoiding the problem of excessive gas release or untimely deflation, thereby ensuring the stable operation of the equipment.

[0013] As a further solution of the present invention, a cooling barrel is fixedly installed on 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 relief pipe, the bottom end of the cooling barrel is fixedly connected to a guide pipe, and the guide pipe is connected to 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 relief pipe, and the excessive gas pressure is released through the air relief 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 on the bottom end of the heat-resistant sleeve, and a siphon cover is fixedly installed on the end of the traction rod away from the heat-resistant sleeve, and a buoyant rubber ring is fixedly installed inside the heat-resistant sleeve.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. When the present invention is used, the aerogel powder that has been agglomerated is vibrated by the vibration of the fine screen, so that the aerogel powder that has been agglomerated is broken up under the action of the vibration, and finally the efficiency of the drying process is maximized; 2. When the present invention is used, the aerogel powder is blown out by blowing a high-speed hot air flow from bottom to top, and the aerogel powder is scattered, which greatly increases the contact area between the powder and the hot air, improves the heat transfer efficiency, and can also prevent the particles from sticking to each other due to moisture or electrostatic adsorption, which helps to maintain the particle uniformity and fluidity of the product; 3. The present invention also has the function of reducing the adhesion problem of the scattered powder to the wall of the drying cylinder under the promotion of hot air flow, reducing the difficulty of cleaning and maintenance, and at the same time, the powder is in a suspended state, which increases the volume utilization rate of the drying cylinder and can process larger batches of materials without increasing the volume of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an aerogel powder drying device; Figure 2 It is a schematic diagram of the structure inside the drying barrel; Figure 3 It is a structural schematic diagram of the stabilizing disk; Figure 4 This is a disassembled diagram of the crushing device; Figure 5 It is a structural schematic diagram of the vibration rack; Figure 6 It is a schematic diagram of the structure inside the stabilizing disk; Figure 7 It is a structural schematic diagram of the wire wheel and the negative pressure sleeve; Figure 8 is a schematic diagram of the structure inside the guide tube; Fig. 9 This is a schematic diagram of the internal structure of the evaporation barrel; Fig.10 It is a schematic diagram of the structure inside the vent pipe; Fig.11 This is a schematic diagram of the internal structure of the cooling barrel; Fig.12 This is a schematic diagram of the enlarged structure inside the cooling barrel.

[0017] In the figure: 1. Drying barrel; 2. Sealing cover; 3. Support frame; 4. Discharge cover; 5. Hot air blower; 6. Air pipe; 101, center tube; 102, feed hole; 103, separation net; 104, inner tube; 201, stabilizing plate; 202, crushing box; 203, coarse screen; 204, matching sleeve; 205, fine screen; 206, discharge shell; 207, wire wheel; 208, return line; 209, traction line; 210, vibration rack; 211, sliding block; 212, spiral rod; 213, negative pressure sleeve; 301, evaporation barrel; 302, heat conduction pipe; 303, boiling chamber; 304, isolation plate; 305, guide tube; 306, limit plate; 307, vent pipe; 308, reset spring; 309, movable plug; 310, vent chamber; 311, sealing ball; 312, movable ring; 313, locking spring; 314, unlocking block; 315, guide rod; 316, reset line; 317, vent hole; 401. Cooling barrel; 402. Pressure relief pipe; 403. Flow guide pipe; 404. Heat-resistant sleeve; 405. Traction rod; 406. Siphon cover; 407. Rubber ring; 408. Sealing ring; 409. Conducting groove; 410. Synchronous rod. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments 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 creative work are within the scope of protection of the present invention.

[0019] Example 1: Please refer to Figure 1 to Figure 4 , an aerogel powder drying device and method, comprising a drying barrel 1, a sealing cover 2 is detachably mounted on the upper end of the drying barrel 1 through a buckle, and the sealing cover 2 is opened so that the aerogel powder can be poured from the top of the drying barrel 1, a support frame 3 is fixedly mounted on the bottom end of the drying barrel 1 through bolts, and a hot air blower 5 is arranged on the right side of the support frame 3 (the hot air blower 5 can blow out a high-speed heat flow to achieve the aerogel powder inside the drying barrel 1 to be blown away and dried), a central tube 101 is fixedly mounted on the inner end of the drying barrel 1, a discharge cover 4 is fixedly mounted on the bottom end of the central tube 101 through a buckle, and the central tube 101 is fixedly connected to the air outlet of the hot air blower 5 through an air supply pipe 6, and a feed hole 102 is opened on the outer surface of the central tube 101, and the feed hole 102 is located at the lower inner side of the drying barrel 1, and specifically, the inner bottom end of the drying barrel 1 is conical, so that the aerogel powder can flow into the feed hole 102 more quickly under the action of gravity; An inner cylinder 104 is fixedly installed at the inner end of the drying barrel 1, and 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, the agglomerated aerogel powder is blocked until it collides with the bottom of the partition net 103, and the rest is screened out by the partition net 103. A stabilizing plate 201 is fixedly installed at the inner end of the inner cylinder 104, and a plurality of crushing boxes 202 are fixedly installed at the bottom end of the stabilizing plate 201. The crushing devices capable of disassembling the agglomerated aerogel powder are arranged inside the crushing boxes 202. A plurality of evaporating barrels 301 are fixedly installed at the bottom end of the stabilizing plate 201, and the evaporating barrel 301 is located between two crushing boxes 202. like Figure 3 - Figure 5 As shown, the crushing device includes a coarse screen 203, which is fixedly installed on the upper end of the discharge shell 206 by bolts, and a fine screen 205 is arranged below the coarse screen 203, and the coarse screen 203 and the fine screen 205 are connected by a matching sleeve 204, and the matching sleeve 204 is a high-temperature resistant rubber sleeve, and has anti-fatigue characteristics, and also has a certain elasticity. When the agglomerated aerogel powder falls from the coarse screen 203 to the top of the fine screen 205, it is then continuously vibrated by the fine screen 205 and continuously impacted by multiple agglomerated aerogel powders and the bottom of the coarse screen 203, so that the agglomerated aerogel powder is broken up and screened out by the fine screen 205; A discharge shell 206 is fixedly welded to the bottom end of the fine screen 205, and the discharge shell 206 is slidably connected to the crushing box 202. The discharge shell 206 slides up and down in the crushing box 202, and a vibrating 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, and the sliding block 211 corresponds to the vibrating rack 210. A contact wheel is rotatably installed at the bottom end of the sliding block 211, and the outer surface of the contact wheel contacts the outer surface of the teeth above the vibrating rack 210. When the sliding block 211 moves, it contacts the teeth above the vibrating rack 210 and produces a vibration effect.

[0020] Example 2: Please refer to Figure 6 , Figure 8 , Fig. 9 , Fig.10 , an aerogel powder drying device and method, based on the embodiment 1, an isolation plate 304 is fixedly installed at the inner end of the evaporation barrel 301, a boiling chamber 303 is arranged between the lower part of the isolation plate 304 and the evaporation barrel 301, a heat conducting pipe 302 is fixedly connected to the outer surface of the evaporation barrel 301, and the end of the heat conducting pipe 302 away from the evaporation barrel 301 is tightly fitted with the outer wall of the central tube 101 (the central tube 101 is made of metal), the boiling chamber 303 and the heat conducting pipe 302 are filled with a boiling liquid (such as perfluorohexanone liquid, which has a boiling point of about 50°C to 60°C and is not flammable), the upper end of the isolation plate 304 is fixedly connected to a guide tube 305, a limit plate 306 is fixedly installed on the inner upper end of the guide tube 305, and a venting pipe 307 is fixedly welded to the bottom end of the limit plate 306; The outer surface of the vent pipe 307 is slidably sleeved with a movable plug 309. Specifically, a rectangular block is fixedly installed on the inner end of the movable plug 309. A rectangular groove is provided on the outer surface of the vent pipe 307. The rectangular block is located in the rectangular groove, so that the movable plug 309 will not rotate when moving up and down on the outer surface of the vent pipe 307. A high-temperature resistant sealing ring is fixedly sleeved on the outer surface of the movable plug 309, and it is tightly fitted with the inner wall of the guide tube 305 to increase the air tightness. The movable plug 309 is connected to the limit plate 306 through a reset spring 308. After the gas inside the boiling chamber 303 expands, the movable plug 309 is pushed upward, and then the reset spring 308 is compressed. like Figure 5 , Figure 7 , Figure 8 , Fig. 9 As shown, more specifically, a wire wheel 207 is rotatably mounted on one end of the crushing box 202 away from the central tube 101, a return wire 208 is wound on the outer surface of the wire wheel 207, and the free end of the return wire 208 is fixedly connected to the right end of the sliding block 211, the upper end of the movable plug 309 is fixedly connected to the traction wire 209, the inner end of the limit plate 306 is provided with a wire hole, and the traction wire 209 is fixedly connected to the left end of the sliding block 211 after passing through the wire hole, and the inner end of the central tube 101 is provided with a sliding hole, and the sliding hole is provided with a sliding hole. A negative pressure sleeve 213 is slidably installed, and a limiting block is fixedly installed on the outer surface of the negative pressure sleeve 213, a limiting groove is provided 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 on the inner end of the negative pressure sleeve 213, and the convex block is embedded in the sliding groove on the outer surface of the spiral rod 212, so that when the negative pressure sleeve 213 slides, the spiral rod 212 can rotate; See also Fig. 9 , Fig.10The inner end of the air release pipe 307 is provided with an air release cavity 310, and the air release cavity 310 is located at the inner upper end of the air release pipe 307. The inner end of the air release pipe 307 is penetrated by a guide rod 315, and 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, and the stabilizing blocks are fitted with the inner wall of the air release pipe 307, so that the guide rod 315 can always remain stable. It is worth noting 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. The inner end of the air release pipe 307 is provided with an active cavity, and the outer surface of the guide rod 315 is fixedly installed with The movable ring 312 is located in the movable cavity. The movable ring 312 is connected to the vent pipe 307 through a locking spring 313. A rectangular hole is provided on the outer surface of the vent pipe 307. An unlocking block 314 is slidably installed in the rectangular hole. A triangular block is fixedly installed 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. When the unlocking block 314 moves to the left, the movable ring 312 moves downward under the pressure of the triangular block. If the movable plug 309 leaves the rectangular hole, the movable ring 312 moves upward under the elastic force of the locking spring 313 and pushes the unlocking block 314 to the right. An air leakage hole 317 is provided on the outer surface of the air leakage pipe 307, and the air leakage hole 317 is connected to the air leakage chamber 310, and a sealing ball 311 is provided inside the air leakage chamber 310. The sealing ball 311 is connected to the guide rod 315 by a reset line 316, and a heat-resistant sealing rubber pad is fixedly sleeved on the outer surface of the sealing ball 311. If the unlocking block 314 jams the movable ring 312, the guide rod 315 pulls the sealing ball 311 through the reset line 316, so that the sealing ball 311 cannot move. On the contrary, the guide rod 315 moves upward under the elastic force of the locking spring 313, so that the reset line 316 is in a relaxed state. Then, when the movable plug 309 continues to move upward and exposes the air leakage hole 317, the high-pressure gas quickly enters the air leakage chamber 310, and the high-speed airflow pushes the sealing ball 311 away.

[0021] Example 3: Please refer to Fig. 9 , Fig.11 , Fig.12, an aerogel powder drying device and method, based on Example 2, a cooling barrel 401 is fixedly installed on the right end of a guide tube 305 through a clamp, 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 release pipe 307, and is communicated with the air release chamber 310, a guide pipe 403 is fixedly connected to the bottom end of the cooling barrel 401, and the guide pipe 403 is communicated with the isolation plate 304, a heat-resistant sleeve 404 is slidably installed inside the cooling barrel 401, a plurality of holes are provided on the outer surface of the heat-resistant sleeve 404 to facilitate the downward flow of liquid, a traction rod 405 is fixedly installed on the bottom end of the heat-resistant sleeve 404, and a siphon cover 406 is fixedly installed on the end of the traction rod 405 away from the heat-resistant sleeve 404; The upper end of the guide pipe 403 is passed through the cooling barrel 401 and extends upward for a distance. When the liquid in the cooling barrel 401 accumulates to a certain volume, the siphon cover 406 moves upward. Under the siphon effect, the liquid in the cooling barrel 401 can be discharged through the guide pipe 403. A buoyant rubber ring 407 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 403, and a synchronization rod 410 is passed through the inner end of the sealing ring 408, and the upper end of the synchronization rod 410 is fixedly connected to the bottom end of the siphon cover 406. A conduction groove 409 is opened on the outer surface of the synchronization rod 410. When the synchronization rod 410 moves upward, the conduction groove 409 is located above the sealing ring 408, thereby realizing the flow of liquid inside the cooling barrel 401, and preventing the high-pressure gas inside the boiling chamber 303 from flowing back through the guide tube 403.

[0022] The working principle of the present invention is: When in use, the wet aerogel powder is poured into the drying barrel 1, and the sealing cover 2 is fastened, and then the hot air blower 5 is started, and the high-speed heat flow comes into the central tube 101 through the air pipe 6. At this time, the aerogel powder flows through the interior of the central tube 101 along with the high-speed high-temperature airflow, and then it is sprayed out from the top of the central tube 101. At this time, the powdery substance that is already in a loose state will pass through the partition net 103. Then, when the block aerogel powder cannot pass through the partition net 103, it will fall above the coarse screen 203 under impact. Then, under the action of the temperature at the center of the central tube 101, the liquid inside the heat conduction tube 302 begins to boil, and the boiling pressure of the liquid increases, and it begins to push the movable plug 309 to move upward; As the movable plug 309 moves, the traction line 209 begins to relax. Under the action of the high-speed airflow in the central tube 101, the pressure decreases, and the negative pressure sleeve 213 begins to move away from the crushing box 202. As the negative pressure sleeve 213 begins to move, the spiral rod 212 begins to rotate, and drives the wire wheel 207 to rotate, which pulls the sliding block 211 to move through the return line 208, and then the fine screen 205 begins to vibrate, shaking off the agglomerated aerogel powder. The aerogel powder after shaking off will be sieved out by the fine screen 205, and then fall into the inner bottom end of the drying barrel 1; At the same time, as the movable plug 309 continues to move upward until the air leakage hole 317 is exposed, the high-pressure gas inside the boiling chamber 303 will enter the air leakage chamber 310 through the air leakage hole 317, and then enter the cooling barrel 401 through the pressure relief pipe 402. Then, under the elastic force of the return spring 308, the movable plug 309 is quickly pushed downward, and the reciprocating movement of the movable plug 309 allows the traction line 209 to pull the sliding block 211 to move, so that the fine screen 205 has an uninterrupted vibration effect; Then, by opening the discharge cover 4, the dried aerogel powder can be collected.

[0023] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed in the present invention, which should be covered by 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).

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 1, characterized in that: 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).

5. The aerogel powder drying device according to claim 4, characterized in that: 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 upward.

6. The aerogel powder drying device according to claim 5, characterized in that: The inner end of the air vent pipe (307) is provided with an air vent cavity (310), and the air vent cavity (310) is located at the inner upper end of the air vent pipe (307). A guide rod (315) is passed through the inner end of the air vent pipe (307), and the guide rod (315) is located below the air vent cavity (310). The inner end of the air vent pipe (307) is provided with an active cavity, and a movable ring (312) is fixedly mounted on the outer surface of the guide rod (315), and the movable ring (312) is located in the active cavity.

7. The aerogel powder drying device according to claim 6, characterized in that: 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).

8. The aerogel powder drying device according to claim 4, 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).

9. The aerogel powder drying device according to claim 8, 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).

10. A method for using an aerogel powder drying device, used for an aerogel powder drying device according to any one of claims 1 to 9, 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), and then will fall onto the top of the coarse screen (203) under 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, and then begins 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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