Preparation device of aerogel powder

Abstract

The invention relates to the technical field of aerogel powder preparation, in particular to an aerogel powder preparation device which comprises a main box body and a tank body fixedly connected to the rear side of the upper end of the main box body. A plurality of rows of discharging holes which are circumferentially distributed at equal intervals are formed in the positions, corresponding to the tank body, of the upper wall of the main box body, and a smashing mechanism used for smashing aerogel blocks is arranged in the tank body. According to the aerogel powder preparation device, the follow-up classifying and screening time of aerogel powder can be effectively shortened, the smashing mechanism and the discharging mechanism are used in cooperation, smashing and screening in the aerogel powder preparation process are integrally combined, the aerogel powder preparation efficiency is remarkably improved, the overall structure is simple, the automation degree is high, and time and labor are saved in use.

Description

Technical Field

[0001] The invention relates to the technical field of aerogel powder preparation, and in particular to a device for preparing aerogel powder. Background Art

[0002] Aerogel is an ultra-light solid material with extremely low density and high porosity. It is formed by replacing the liquid component in the gel with gas. Aerogel powder refers to the powdered form of aerogel. The general preparation of aerogel powder includes the following steps:

[0003] 1. Preparation of precursor solution: First, you need to prepare a suitable precursor solution, which is usually done by dissolving appropriate chemical reagents in a solvent. For silica aerogel, the commonly used precursor is ethyl orthosilicate or similar silicon source compounds.

[0004] 2. Sol-gel process: In this stage, the precursor solution forms a wet gel with a three-dimensional network structure through hydrolysis and condensation reactions.

[0005] 3. Aging treatment: In order to improve the mechanical strength of the gel and reduce shrinkage during drying, the wet gel is usually aged by adjusting the temperature and humidity conditions.

[0006] 4. Supercritical drying equipment: This is the core part of aerogel preparation. Traditional aerogel preparation uses supercritical carbon dioxide drying technology, which involves placing the wet gel into an autoclave and filling it with liquid carbon dioxide, then gradually raising the temperature and pressure to above the supercritical point of carbon dioxide. In this state, the interface between liquid and gas disappears, and the solvent in the gel can be removed without surface tension without destroying its fine structure. Afterwards, the pressure is slowly reduced to allow the carbon dioxide to escape, leaving behind a porous aerogel solid.

[0007] 5. Crushing and grading: The obtained block aerogel needs to be crushed into powder form, and then screened or graded according to the particle size requirements.

[0008] It seems that the formation of the final aerogel powder is determined by the crushing and grading steps. In the prior art, two types of equipment are needed to complete the aerogel block crushing and grading steps. The first step is to crush the aerogel block with a crusher, and the second step is to grade and screen the aerogel powder with a screening device. During the whole process, the aerogel powder needs to be continuously moved, which is troublesome to operate and the work efficiency needs to be improved. In addition, the existing aerogel block crushers mostly use rotary cutting, which has a limited crushing range. Aerogel blocks that cannot be rotary cut are easily accumulated in the edge area of ​​the crushing tank, and secondary cleaning is required later, which wastes working time. Summary of the invention

[0009] Technical problem to be solved: The present invention provides a device for preparing aerogel powder, which can solve the above-mentioned problems.

[0010] Technical solution: In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a device for preparing aerogel powder, comprising a main box body and a tank body fixedly connected to the rear side of the upper end of the main box body, a feed valve port for feeding aerogel block raw materials is fixedly installed on the upper side of the tank body, a plurality of rows of feed holes equidistantly distributed in a circle are opened on the upper wall of the main box body corresponding to the position of the tank body, a crushing mechanism for crushing aerogel blocks is arranged inside the tank body, and a feed discharge mechanism for classifying and discharging the crushed aerogel powder is arranged inside the main box body.

[0011] The crushing mechanism includes a rotating shaft rotatably connected to the center of the top wall of the tank body, a spreading shaft section is fixedly connected to the lower end of the rotating shaft, the lower end of the spreading shaft section is rotatably connected to the top wall of the main box body, the rotating shaft and the spreading shaft section are hollow structures, the upper section of the spreading shaft section is connected to a plurality of crushing rollers by rotating equidistantly in a circle of a rotating rod, a plurality of conical teeth are fixedly connected to the crushing rollers, the lower section of the spreading shaft section is connected to a plurality of toggle shafts by rotating equidistantly in a circle of a rotating rod, spiral sections are fixedly connected to the outer periphery of both ends of the toggle shaft, and the spiral directions of the spiral sections at both ends are opposite, a rotation component for controlling the rotation of the toggle shaft and the crushing roller is jointly arranged inside the rotating shaft and the spreading shaft section, and a driving component for controlling its rotation is arranged at the upper end of the rotating shaft.

[0012] The unloading mechanism includes a discharge port 1 opened on the front side wall of the main box body, and discharge ports 2, 3 and 4 opened on the left side wall of the main box body from front to back. A grading and screening component for gradedly feeding the crushed aerogel powder into each discharge port is arranged inside the main box corresponding to each discharge port.

[0013] As a preferred technical solution of the present invention, the self-rotation component includes a fixed frame fixedly connected to the top wall of the tank body, the fixed frame is fixedly connected with a downwardly extending built-in shaft at a position corresponding to the central axis of the tank body, the built-in shaft is fixedly connected with a bevel gear six at a position above the central axis of the crushing roller, a plurality of bevel gears five are equidistantly meshed with the lower side of the bevel gear six, the bevel gears five are fixedly connected to the inner end of the rotating rod connected to the crushing roller in a one-to-one manner, the built-in shaft is fixedly connected with a bevel gear three at a position below the central axis of the toggle shaft, a plurality of bevel gears four are equidistantly meshed with the upper side of the bevel gear three, and the bevel gears four are fixedly connected to the inner end of the rotating rod connected to the toggle shaft in a one-to-one manner.

[0014] As a preferred technical solution of the present invention, the driving assembly includes a bevel gear 1 fixedly connected to the upper side of the rotating shaft, the outer periphery of the bevel gear 1 is meshedly connected with a bevel gear 2, the bevel gear 2 is fixedly connected to the output end of the driving motor, and the driving motor is fixedly connected to the top wall of the tank body.

[0015] As a preferred technical solution of the present invention, a loose hole component for controlling the opening and closing of the feed hole is provided at the lower side of the feed hole.

[0016] As a preferred technical solution of the present invention, the loosening hole assembly includes a mounting ring that is colinear with the central axis of the tank body, a plurality of arms are fixedly connected to the outer wall of the mounting ring at equal intervals on the circumference, a plurality of loosening heads are fixedly connected to the upper ends of the arms corresponding to a row of feed holes one by one, a plurality of connecting strips inclined to the central axis thereof are fixedly connected to the lower side of the mounting ring, a plurality of connecting strips are fixedly connected to the lower ends of a support seat that is colinear with the central axis of the mounting ring, a ball head is hinged at the lower center of the support seat, the ball head is fixedly connected to the output end of the electric push rod 2, the lower end of the electric push rod 2 is fixedly connected to the fixing plate, and the fixing plate is fixedly connected to the rear side wall of the main box body.

[0017] As a preferred technical solution of the present invention, an electric push rod 1 is also provided on the fixed plate, the upper end of the electric push rod 1 is hinged on the support seat, and the lower end of the electric push rod is hinged on the fixed plate.

[0018] As a preferred technical solution of the present invention, the grading screening assembly includes a three-stage screen plate tilted upward and backward, and two bottom support plates are fixedly connected to the lower side of the three-stage screen plate. The two bottom support plates are respectively arranged between discharge port two and discharge port three and between discharge port three and discharge port four. The lower ends of the two bottom support plates are commonly fixedly connected with a sliding plate, which is fixedly connected to the inner wall of the main box body and tilted toward the lower left.

[0019] As a preferred technical solution of the present invention, a plurality of spring seats are equidistantly fixedly connected to the lower left and right sides of the three-stage screen plate, the lower ends of the spring seats are fixedly connected to the support plates, the support plates are fixedly connected to the inner wall of the main box body, and a plurality of vibration motors are fixedly connected to the lower side of the three-stage screen plate.

[0020] As a preferred technical solution of the present invention, the three-stage sieve plate is divided into three sections at equal intervals, and the apertures of the three sections arranged from front to back are gradually reduced.

[0021] Beneficial effects:

[0022] 1. The pulverizing mechanism adopted in the present invention can automatically push the aerogel blocks in the position that is difficult for the crushing roller to be processed into the crushing range of the crushing roller through the toggle action of the toggle shaft, effectively ensuring the crushing effect of the crushing roller and the comprehensive crushing of the aerogel blocks. At the same time, it can effectively avoid the situation where the aerogel powder blocks the feed hole, significantly reduce the dredging frequency of the feed hole, and further ensure the preparation efficiency of the aerogel powder.

[0023] 2. The feeding mechanism used in the present invention can automatically and finely classify the aerogel powder according to the particle size, the working steps are simple, and the subsequent classification and screening time of the aerogel powder can be effectively saved.

[0024] 3. The pulverizing mechanism and the feeding mechanism adopted in the present invention are used in combination to integrate the pulverizing and screening in the preparation of aerogel powder, which significantly improves the production efficiency of aerogel powder. The overall structure is simple and the degree of automation is high, which saves time and effort in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure from the first viewing angle of the present invention.

[0027] Figure 2 It is a schematic diagram of the stereoscopic cross-sectional structure from a second viewing angle of the present invention.

[0028] Figure 3 It is a front cross-sectional structural schematic diagram of the present invention.

[0029] Figure 4 It is a structural schematic diagram of the three-stage sieve plate of the present invention.

[0030] Figure 5 It is a schematic diagram of the cross-sectional three-dimensional structure of the interior of the tank body of the present invention.

[0031] Figure 6 It is a schematic diagram of the three-dimensional connection structure of the dialing shaft, the crushing roller and the self-rotating component of the present invention.

[0032] Figure 7 It is a schematic diagram of the three-dimensional connection structure of the loose hole assembly of the present invention.

[0033] In the figure: 1. Main box; 11. Feeding hole; 12. Loose hole assembly; 121. Mounting ring; 122. Support arm; 123. Fixing plate; 124. Loose head; 125. Electric push rod 1; 126. Ball head; 127. Electric push rod 2; 128. Support seat; 129. Connecting strip; 2. Tank; 3. Feeding valve port; 4. Feeding mechanism; 41. Feeding port 1; 42. Feeding port 2; 43. Feeding port 3; 44. Feeding port 4; 45. Grading and screening assembly; 451. Three-stage sieve plate; 452. Vibrating electric machine; 453, spring seat; 454, support plate; 46, bottom support plate; 47, sliding plate; 5, crushing mechanism; 51, rotating shaft; 52, expanding shaft section; 53, crushing roller; 531, cone teeth; 54, toggle shaft; 541, spiral section; 55, driving assembly; 551, bevel gear one; 552, driving motor; 553, bevel gear two; 56, rotation assembly; 561, built-in shaft; 562, fixed frame; 563, bevel gear three; 564, bevel gear four; 565, bevel gear five; 566, bevel gear six. DETAILED DESCRIPTION

[0034] The embodiments of the present invention are described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways as defined and covered by the claims.

[0035] See also Figure 1 , Figure 2 and Figure 5 A device for preparing aerogel powder comprises a main box body 1 and a tank body 2 fixedly connected to the rear side of the upper end of the main box body 1, a feed valve port 3 for feeding aerogel block raw materials is fixedly installed on the upper side of the tank body 2, a plurality of rows of feed holes 11 equidistantly distributed in a circle are opened on the upper wall of the main box body 1 at a position corresponding to the tank body 2, a crushing mechanism 5 for crushing aerogel blocks is arranged inside the tank body 2, and a feed discharge mechanism 4 for classifying and discharging the crushed aerogel powder is arranged inside the main box body 1.

[0036] See also Figure 5 The crushing mechanism 5 includes a rotating shaft 51 rotatably connected to the center of the top wall of the tank body 2, and an expanding shaft section 52 is fixedly connected to the lower end of the rotating shaft 51, and the lower end of the expanding shaft section 52 is rotatably connected to the top wall of the main box body 1. The rotating shaft 51 and the expanding shaft section 52 are hollow structures. The upper section of the expanding shaft section 52 is rotatably connected to a plurality of crushing rollers 53 through a rotating rod circumferentially equidistantly, and the crushing rollers 53 are fixedly connected to a plurality of toggle shafts 54 through a rotating rod circumferentially equidistantly. The crushing rollers 53 are fixedly connected, and the lower section of the expanding shaft section 52 is rotatably connected to a plurality of toggle shafts 54 through a rotating rod circumferentially equidistantly. The outer periphery of the toggle shaft 54 ​​is fixedly connected with a spiral section 541 at both ends, and the spiral directions of the spiral sections 541 at both ends are opposite. The rotating shaft 51 and the expanding shaft section 52 are jointly provided with a rotation component 56 for controlling the rotation of the toggle shaft 54 ​​and the crushing roller 53, and the upper end of the rotating shaft 51 is provided with a driving component 55 for controlling its rotation.

[0037] During specific operation, the crushing roller 53 rotates around the central axis of the tank body 2, so that the crushing roller 53 fully covers the aerogel blocks at the bottom of the tank body 2 through the destructive effect of the conical teeth 531, thereby achieving the effect of crushing the aerogel blocks.

[0038] See also Figure 1 and Figure 2 The unloading mechanism 4 includes a discharge port 1 41 opened on the front side wall of the main box body 1, and a discharge port 2 42, a discharge port 3 43 and a discharge port 44 opened on the left side wall of the main box body 1 from front to back. A grading screening component 45 for graded feeding of the crushed aerogel powder into each discharge port is arranged inside the main box body 1 corresponding to each discharge port.

[0039] During specific operation, aerogel powders of different particle sizes are discharged through discharge port 1 41 , discharge port 2 42 , discharge port 3 43 and discharge port 4 44 , so as to achieve the effect of grading and screening the aerogel powders.

[0040] See also Figure 5 and Figure 6The self-rotation component 56 includes a fixing frame 562 fixedly connected to the top wall of the tank body 2, the fixing frame 562 is fixedly connected with a downwardly extending built-in shaft 561 at a position corresponding to the central axis of the tank body 2, the built-in shaft 561 is located at a position above the central axis of the crushing roller 53 and is fixedly connected with a six-bevel gear 566, a plurality of five-bevel gears 565 are equidistantly meshed with the lower side of the six-bevel gear 566, and the five-bevel gears 565 are fixedly connected to the inner end of the rotating rod connected to the crushing roller 53 one by one, the built-in shaft 561 is located at a position below the central axis of the toggle shaft 54 ​​and is fixedly connected with a three-bevel gear 563, a plurality of four-bevel gears 564 are equidistantly meshed with the upper side of the three-bevel gear 563, and the four-bevel gears 564 are fixedly connected to the inner end of the rotating rod connected to the toggle shaft 54 ​​one by one.

[0041] During specific operation, the rotation of the rotating shaft 51 causes it to rotate around the bevel gear six 566 and the bevel gear three 563 at the same time, thereby driving the bevel gear five 565 and the bevel gear four 564 to rotate around the built-in shaft 561, and the self-rotation of the bevel gear five 565 and the bevel gear four 564 drives the crushing roller 53 and the toggle shaft 54 ​​to rotate, and the aerogel blocks are quickly crushed by the combined revolution and self-rotation of the crushing roller 53, and the rotation of the toggle shaft 54 ​​drives the spiral segments 541 at both ends to rotate, and the aerogel blocks at the edge of the side wall of the tank body 2 and the outside of the side wall of the expanded shaft segment 52 are continuously concentrated to the middle of the toggle shaft 54, which can increase the mobility of the aerogel blocks and improve the crushing effect, and push the edge aerogel blocks to the middle of the crushing roller 53 to ensure that the aerogel blocks are within the crushing range of the crushing roller 53.

[0042] See also Figure 5 The driving assembly 55 includes a bevel gear 551 fixedly connected to the upper side of the rotating shaft 51, and the outer periphery of the bevel gear 551 is meshedly connected with a bevel gear 553, and the bevel gear 553 is fixedly connected to the output end of the driving motor 552, and the driving motor 552 is fixedly connected to the top wall of the tank body 2.

[0043] During specific operation, the bevel gear 2 553 is controlled to rotate by driving the motor 552 , and the bevel gear 2 553 drives the bevel gear 1 551 to rotate to control the rotation shaft 51 .

[0044] See also Figure 2 and Figure 7A loose hole assembly 12 for controlling the opening and closing of the discharge hole 11 is provided at the lower side of the discharge hole 11; the loose hole assembly 12 includes a mounting ring 121 which is colinear with the central axis of the tank body 2, and a plurality of support arms 122 are fixedly connected to the outer wall of the mounting ring 121 at equal intervals on the circumference, and a plurality of loose heads 124 are fixedly connected to the upper ends of the support arms 122 corresponding to a row of discharge holes 11 one by one, and a plurality of connecting strips 129 inclined to the central axis thereof are fixedly connected to the lower side of the mounting ring 121, and a support seat 128 which is colinear with the central axis of the mounting ring 121 is fixedly connected at the lower ends of the plurality of connecting strips 129, and a ball head 126 is hinged at the lower center of the support seat 128, and the ball head 126 is fixedly connected to the output end of the second electric push rod 127, and the lower end of the second electric push rod 127 is fixedly connected to the fixing plate 123, and the fixing plate 123 is fixedly connected to the rear side wall of the main box body 1.

[0045] See also Figure 7 The fixing plate 123 is also provided with an electric push rod 125 , the upper end of the electric push rod 125 is hinged on the support seat 128 , and the lower end of the electric push rod 125 is hinged on the fixing plate 123 .

[0046] During specific operation, the loosening head 124 cooperates with the discharge hole 11 to form a closed surface. When discharging, the support seat 128 is lowered as a whole through the cooperation of the electric push rod 125 and the electric push rod 2 127, and the support seat 128 drives the mounting ring 121 to control the loosening heads 124 on each support arm 122 to descend and completely withdraw from the discharge hole 11, and the aerogel powder will enter the main box body 1 through the discharge hole 11, and part of the aerogel powder will fall on the support seat 128, the support arm 122 and the mounting ring 121, and the electric push rod 125 will reciprocate and telescope alone to control the mounting ring 121 to drive each support arm 122 to swing as a whole, and shake the aerogel powder adhered to the support seat 128, the support arm 122 and the mounting ring 121 into the main box body 1.

[0047] See also Figure 2 , Figure 3 and Figure 4 The grading screening component 45 includes a three-stage screen plate 451 tilted upward and backward, and two bottom supporting plates 46 are fixedly connected to the lower side of the three-stage screen plate 451. The two bottom supporting plates 46 are respectively arranged between the discharge port 2 42 and the discharge port 3 43 and between the discharge port 3 43 and the discharge port 4 44. The lower ends of the two bottom supporting plates 46 are commonly fixedly connected with a sliding plate 47, which is fixedly connected to the inner wall of the main box body 1 and tilted toward the lower left.

[0048] See also Figure 2 A plurality of spring seats 453 are equidistantly fixedly connected to the lower part of the left and right sides of the three-stage sieve plate 451, the lower end of the spring seat 453 is fixedly connected to the support plate 454, the support plate 454 is fixedly connected to the inner wall of the main box body 1, and a plurality of vibration motors 452 are fixedly connected to the lower side of the three-stage sieve plate 451.

[0049] See also Figure 4 The three-stage sieve plate 451 is divided into three sections at equal intervals, and the apertures of the three sections arranged from front to back are gradually reduced.

[0050] During specific operation, the vibration motor 452 drives the three-stage sieve plate 451 to vibrate, so as to perform vibration screening on the aerogel powder, which is vibrated and supported by the spring seat 453. The three-stage sieve holes of the three-stage sieve plate 451 perform three-stage screening, so that the aerogel powder is divided into four levels according to the particle fineness from fine to coarse, and enters the discharge port four 44, the discharge port three 43, the discharge port two 42 and the discharge port one 41 in sequence.

[0051] When in use: S1: open the feed valve port 3, input the aerogel block into the tank body 2 through the feed valve port 3, start the drive motor 552 and the vibration motor 452, control the rotation of the bevel gear 2 553 through the drive motor 552, and the bevel gear 1 551 is driven by the bevel gear 2 553 to rotate and control the rotation of the rotating shaft 51.

[0052] S2: The rotating shaft 51 rotates to rotate around the bevel gear 6 566 and the bevel gear 3 563, thereby driving the bevel gear 5 565 and the bevel gear 4 564 to rotate around the internal shaft 561, and the self-rotation of the bevel gear 5 565 and the bevel gear 4 564 drives the crushing roller 53 and the toggle shaft 54 ​​to rotate, and the aerogel blocks are quickly crushed by the combined revolution and self-rotation of the crushing roller 53, and the rotation of the toggle shaft 54 ​​drives the spiral sections 541 at both ends to rotate to continuously concentrate the aerogel blocks at the edge of the side wall of the tank body 2 and the outside of the side wall of the expanded shaft section 52 to the middle of the toggle shaft 54, and at the same time, the crushing roller 53 rotates around the central axis of the tank body 2, so that the crushing roller 53 fully covers the aerogel blocks at the bottom of the tank body 2 through the destructive effect of the cone teeth 531.

[0053] S3: In the working state, the loosening head 124 cooperates with the discharge hole 11 to form a closed surface. When discharging, the support seat 128 is lowered as a whole through the cooperation of the electric push rod 125 and the electric push rod 2 127, and the support seat 128 drives the mounting ring 121 to control the loosening heads 124 on each support arm 122 to descend and completely withdraw from the discharge hole 11. The aerogel powder will enter the main box body 1 through the discharge hole 11, and part of the aerogel powder will fall on the support seat 128, the support arm 122 and the mounting ring 121. The electric push rod 125 reciprocates and telescopes alone to control the mounting ring 121 to drive each support arm 122 to swing as a whole, and shake the aerogel powder adhered to the support seat 128, the support arm 122 and the mounting ring 121 into the main box body 1.

[0054] S4: The vibration motor 452 drives the three-stage sieve plate 451 to vibrate, so as to perform vibration screening on the aerogel powder. The spring seat 453 performs vibration support, and the three-stage sieve holes of the three-stage sieve plate 451 perform three-stage screening, so that the aerogel powder is divided into four levels according to the particle fineness from fine to coarse, and enters the discharge port four 44, the discharge port three 43, the discharge port two 42 and the discharge port one 41 in sequence.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for preparing aerogel powder, comprising a main box (1) and a tank (2) fixedly connected to the rear side of the upper end of the main box (1), a feed valve (3) for feeding aerogel block raw materials is fixedly installed on the upper side of the tank (2), and a plurality of rows of feed holes (11) equidistantly distributed in a circle are provided on the upper wall of the main box (1) at a position corresponding to the tank (2), characterized in that: The tank body (2) is provided with a crushing mechanism (5) for crushing aerogel blocks, and the main box body (1) is provided with a feeding mechanism (4) for classifying and feeding the crushed aerogel powder; The crushing mechanism (5) comprises a rotating shaft (51) rotatably connected to the center of the top wall of the tank body (2); the lower end of the rotating shaft (51) is fixedly connected to an expansion shaft section (52); the lower end of the expansion shaft section (52) is rotatably connected to the top wall of the main box body (1); the rotating shaft (51) and the expansion shaft section (52) are hollow structures; the upper section of the expansion shaft section (52) is rotatably connected to a plurality of crushing rollers (53) via a rotating rod at equal intervals; the crushing rollers (53) are fixedly connected to a plurality of cone teeth (531); The lower section of the expansion shaft section (52) is connected to a plurality of toggle shafts (54) by means of a rotating rod, and the two ends of the toggle shaft (54) are fixedly connected to the periphery thereof, and the spiral sections (541) at the two ends have opposite spiral directions. A rotation assembly (56) for controlling the rotation of the toggle shaft (54) and the crushing roller (53) is provided inside the rotating shaft (51) and the expansion shaft section (52), and a driving assembly (55) for controlling the rotation thereof is provided at the upper end of the rotating shaft (51); The unloading mechanism (4) comprises a first unloading port (41) provided on the front side wall of the main box body (1), and a second unloading port (42), a third unloading port (43) and a fourth unloading port (44) provided on the left side wall of the main box body (1) in sequence from front to back. A grading screening assembly (45) for grading the crushed aerogel powder into each unloading port is arranged inside the main box body (1) corresponding to each unloading port.

2. The device for preparing aerogel powder according to claim 1, characterized in that: The self-rotating component (56) comprises a fixing frame (562) fixedly connected to the top wall of the tank body (2); the fixing frame (562) is fixedly connected to a downwardly extending built-in shaft (561) at a position corresponding to the central axis of the tank body (2); the built-in shaft (561) is fixedly connected to a sixth bevel gear (566) at a position above the central axis of the crushing roller (53); a plurality of fifth bevel gears (565) are equidistantly meshed at the lower side of the sixth bevel gear (566); the fifth bevel gears (565) are fixedly connected to the inner end of a rotating rod connected to the crushing roller (53) in a one-to-one manner; the built-in shaft (561) is fixedly connected to a third bevel gear (563) at a position below the central axis of the shifting shaft (54); a plurality of fourth bevel gears (564) are equidistantly meshed at the upper side of the third bevel gear (563); the fourth bevel gears (564) are fixedly connected to the inner end of a rotating rod connected to the shifting shaft (54) in a one-to-one manner.

3. The device for preparing aerogel powder according to claim 1, characterized in that: The driving assembly (55) comprises a bevel gear 1 (551) fixedly connected to the upper side of the rotating shaft (51); the outer periphery of the bevel gear 1 (551) is meshedly connected with a bevel gear 2 (553); the bevel gear 2 (553) is fixedly connected to the output end of a driving motor (552); and the driving motor (552) is fixedly connected to the top wall of the tank body (2).

4. The device for preparing aerogel powder according to claim 1, characterized in that: A loose hole assembly (12) for controlling the opening and closing of the discharge hole (11) is arranged at the lower side of the discharge hole (11).

5. The device for preparing aerogel powder according to claim 4, characterized in that: The loosening hole assembly (12) comprises a mounting ring (121) which is colinear with the central axis of the tank body (2); a plurality of supporting arms (122) are fixedly connected to the outer wall of the mounting ring (121) at equal intervals on the circumference; a plurality of loosening heads (124) are fixedly connected to the upper ends of the supporting arms (122) corresponding to the respective feeding holes (11) in a row; a plurality of connecting strips (129) which are inclined toward the central axis thereof are fixedly connected to the lower side of the mounting ring (121); and a support seat (128) which is colinear with the central axis of the mounting ring (121) is fixedly connected to the lower ends of the plurality of connecting strips (129).

6. The device for preparing aerogel powder according to claim 4, characterized in that: The loose hole assembly (12) further comprises a ball head (126) hinged at the lower center of the support seat (128), the ball head (126) being fixedly connected to the output end of the second electric push rod (127), the lower end of the second electric push rod (127) being fixedly connected to the fixing plate (123), and the fixing plate (123) being fixedly connected to the rear side wall of the main box body (1).

7. The device for preparing aerogel powder according to claim 6, characterized in that: The fixing plate (123) is also provided with an electric push rod (125), the upper end of the electric push rod (125) is hinged on the support seat (128), and the lower end of the electric push rod (125) is hinged on the fixing plate (123).

8. The device for preparing aerogel powder according to claim 1, characterized in that: The grading screening assembly (45) comprises a three-stage screen plate (451) tilted upward and backward, and two bottom supporting plates (46) are fixedly connected to the lower side of the three-stage screen plate (451), and the two bottom supporting plates (46) are respectively arranged between the second discharge port (42) and the third discharge port (43) and between the third discharge port (43) and the fourth discharge port (44), and the lower ends of the two bottom supporting plates (46) are fixedly connected to a sliding plate (47), and the sliding plate (47) is fixedly connected to the inner wall of the main box body (1) and tilted toward the lower left.

9. The device for preparing aerogel powder according to claim 8, characterized in that: A plurality of spring seats (453) are fixedly connected to the lower parts of the left and right sides of the three-stage sieve plate (451) at equal intervals, the lower ends of the spring seats (453) are fixedly connected to the support plates (454), the support plates (454) are fixedly connected to the inner wall of the main box body (1), and a plurality of vibration motors (452) are fixedly connected to the lower side of the three-stage sieve plate (451).

10. The device for preparing aerogel powder according to claim 8, characterized in that: The three-stage sieve plate (451) is divided into three sections at equal intervals, and the apertures of the three sections arranged from front to back are gradually reduced.

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