Solvent replacement modification device for aerogel preparation

Abstract

The solvent replacement modification device comprises a modification tank, a rotary table, a mesh cylinder, a liquid storage tank and a lifting rack, the mesh cylinder is arranged in the modification tank, the rotary table is mounted at the bottom of the modification tank below the mesh cylinder through a bearing, a first motor is mounted at the bottom end of the modification tank, and a second motor is mounted at the bottom end of the first motor. The output end of the first motor is fixedly connected with the rotary table, a clamping arm is arranged at the top end of a net barrel, a transverse frame is fixed above a cover plate, heating blocks are installed in the side walls of the modification tank, the lifting rack is arranged on one side of the modification tank, and the liquid storage tank is arranged on the other side of the modification tank. And a pump body is mounted at the top end of the liquid storage tank. The mode that centrifugal dewatering is conducted firstly and then evaporation dewatering is conducted is adopted, the dewatering efficiency is high, dewatering is more thorough, the heating time is greatly shortened, and the situation that gel cracks due to long-time heating is prevented.

Description

Technical Field

[0001] This utility model relates to the field of aerogel preparation technology, specifically to a solvent displacement modification device for aerogel preparation. Background Technology

[0002] Aerogels, nanoporous materials with ultra-low density and high porosity, have wide applications in energy, environmental protection, aerospace, and other fields due to their unique physical and chemical properties. Solvent displacement technology plays a crucial role in the preparation of aerogels.

[0003] Chinese patent CN221132185U discloses an integrated solvent displacement modification device for aerogel preparation, comprising a modification tank with an aerogel inlet and a sealing cap at the top; an upper part with an inlet pipe, a condenser pipe connected to a condensation system, and a return pipe connected to a condenser tank; and a lower part with a drain pipe; the modification tank also has a heating jacket; it further includes a modified solvent storage tank and a modifier storage tank; the outlets of the modified solvent storage tank and the modifier storage tank are respectively connected to the inlet of a static mixer via pipes, and the outlet of the static mixer is connected to the inlet pipe of the modification tank; each pipe is equipped with a valve.

[0004] Although the aforementioned device can achieve simultaneous solvent replacement and modification in one container without the need for a separate solvent replacement step, thus simplifying the process, it only uses heating to evaporate the water in the pores of the wet gel. Heating not only results in slow evaporation and low dehydration efficiency, but also incomplete dehydration. Furthermore, prolonged heating may cause the gel to crack. Therefore, improvements are urgently needed. Utility Model Content

[0005] The purpose of this invention is to provide a solvent displacement modification device for aerogel preparation, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a solvent displacement modification device for aerogel preparation, comprising a modification tank, a turntable, a mesh cylinder, a storage tank, and a lifting frame. The mesh cylinder is disposed inside the modification tank. The turntable is mounted on the bottom of the modification tank below the mesh cylinder via bearings. A first motor is installed at the bottom of the modification tank, and the output end of the first motor is fixedly connected to the turntable. A clamping arm is provided at the top of the mesh cylinder, and the clamping arm is connected to a cover plate at the top of the modification tank via a rotating shaft. A sealing ring is adhered to the bottom of the cover plate, and the sealing ring is tightly fitted to the inner wall of the modification tank. A crossbar is fixed above the cover plate. Heating blocks are installed inside the side walls of the modification tank. The lifting frame is disposed on one side of the modification tank, and the storage tank is disposed on the other side of the modification tank. A pump body is installed at the top of the storage tank, and the input end of the pump body is connected to the storage tank, and the output end of the pump body is connected to the modification tank.

[0007] Preferably, a drain pipe is installed on one side of the bottom of the modified tank, and a drain valve is installed at the connection between the drain pipe and the modified tank.

[0008] Preferably, an exhaust pipe is installed on the outer wall of the top of the modified tank.

[0009] Preferably, the top of the turntable is provided with a slot, and the slot engages with the protrusion at the bottom of the mesh cylinder.

[0010] Preferably, clamping rods are provided on both sides of the mesh cylinder, and the clamping rods engage with the limiting grooves on the outer wall of the mesh cylinder.

[0011] Preferably, a bidirectional lead screw is installed inside the clamping arm, and one end of the bidirectional lead screw extends to the outside of the clamping arm and is equipped with a knob. Furthermore, sliders are threaded onto the outer walls on both sides of the bidirectional lead screw, and the bottom end of the slider is welded to the clamping rod.

[0012] Preferably, a second motor is installed at the bottom of the lifting frame, and a lifting screw is installed at the output end of the second motor. Guide rods are fixed inside the lifting frame on both sides of the lifting screw. One end of the cross frame passes through the lifting frame and is threadedly connected to the lifting screw. One end of the cross frame is slidably sleeved with the guide rod.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] The first motor drives the turntable to rotate, which in turn drives the mesh cylinder to rotate, centrifuging and dehydrating the wet gel inside the mesh cylinder. The water in the pores of the wet gel is thrown out, and the drain valve is opened to allow the water to be discharged through the drain pipe. Then, the heating block is powered on to heat the wet gel. During the heating process, the water in the pores of the wet gel is evaporated, and the water vapor is discharged through the exhaust pipe. After the water has evaporated, the pump is started to draw out the modified liquid from the storage tank and transport it into the modified tank. The wet gel is immersed in the modified liquid, which enters the pores of the wet gel to react and modify the gel. This device adopts a method of centrifugal dehydration followed by evaporation dehydration, which has high dehydration efficiency and is more thorough. It also greatly shortens the heating time and prevents the gel from cracking due to prolonged heating.

[0015] The second motor drives the lifting screw to rotate in the opposite direction, causing the crossbar to move upward along the guide rod, raising the mesh cylinder above the modification tank. Then, rotating the knob causes the bidirectional screw to rotate, causing the slider to move the clamping rod to both sides. The clamping rod separates from the limiting groove, allowing the mesh cylinder to be removed, thus facilitating the removal of the hydrogel. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the front cross-sectional structure of this utility model;

[0017] Figure 2 This is an enlarged schematic diagram of the mesh tube structure of this utility model;

[0018] Figure 3 This is a schematic diagram showing the disassembled state of the mesh cylinder of this utility model;

[0019] Figure 4 This is a side view enlarged structural schematic diagram of the lifting frame of this utility model.

[0020] In the diagram: 1. Modified tank; 101. Drain pipe; 102. Drain valve; 103. Heating block; 2. First motor; 3. Turntable; 301. Slot; 4. Mesh cylinder; 401. Protrusion; 402. Limiting groove; 5. Storage tank; 6. Pump body; 7. Exhaust pipe; 8. Cover plate; 9. Rotating shaft; 10. Clamping arm; 11. Horizontal frame; 12. Lifting frame; 13. Clamping rod; 14. Sealing ring; 15. Two-way lead screw; 16. Slider; 17. Knob; 18. Second motor; 19. Lifting lead screw; 20. Guide rod. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Therefore, the following detailed description of the embodiments of this utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0023] Please see Figure 1-4 The present invention provides an embodiment of a solvent displacement modification device for aerogel preparation, comprising a modification tank 1, a turntable 3, a mesh cylinder 4, a storage tank 5, and a lifting frame 12. The mesh cylinder 4 is disposed inside the modification tank 1. The turntable 3 is mounted on the bottom of the modification tank 1 below the mesh cylinder 4 via bearings. A first motor 2 is installed at the bottom end of the modification tank 1, and the output end of the first motor 2 is fixedly connected to the turntable 3. A clamping arm 10 is provided at the top end of the mesh cylinder 4, and the clamping arm 10 is connected to the cover plate 8 at the top end of the modification tank 1 via a rotating shaft 9. A sealing ring 14 is adhered to the bottom end of the cover plate 8, and the sealing ring 14 is tightly fitted to the inner wall of the modification tank 1. A cross frame 11 is fixed above the cover plate 8. Heating blocks 103 are installed inside the side walls of the modification tank 1.

[0024] Specifically, the aged wet gel is placed into the mesh cylinder 4, the second motor 18 is started to rotate the lifting screw 19, and the crossbar 11 moves down along the guide rod 20, lowering the mesh cylinder 4 into the modification tank 1 and placing it at the top of the turntable 3. The protrusion 401 engages with the slot 301, so that the mesh cylinder 4 is engaged with the turntable 3. The cover plate 8 is lowered to the top of the modification tank 1, and the sealing ring 14 seals the cover plate 8 and the modification tank 1. Then, the first motor 2 drives the turntable 3 to rotate, and the turntable 3 drives the mesh cylinder 4 to rotate, centrifuging and dehydrating the wet gel inside the mesh cylinder 4. The water in the pores of the wet gel is thrown out, and the drain valve 102 is opened to allow the water to be discharged through the drain pipe 101.

[0025] The heating block 103 is energized to heat the wet gel. During the heating process, the moisture in the pores of the wet gel will evaporate, and the water vapor will be discharged through the exhaust pipe 7.

[0026] The lifting frame 12 is located on one side of the modified tank 1;

[0027] The storage tank 5 is located on the other side of the modification tank 1, and a pump body 6 is installed on the top of the storage tank 5. The input end of the pump body 6 is connected to the storage tank 5, and the output end of the pump body 6 is connected to the modification tank 1.

[0028] Specifically, after the water has evaporated, the pump body 6 is started to draw out the modified liquid inside the storage tank 5 and transport it into the modified tank 1. The wet gel is soaked in the modified liquid, which will enter the pores of the wet gel to react and modify the gel. The device adopts a method of first centrifugation dehydration and then evaporation dehydration, which has high dehydration efficiency and is more thorough. It also greatly shortens the heating time and prevents the gel from cracking due to prolonged heating.

[0029] A drain pipe 101 is installed on one side of the bottom of the modified tank 1, and a drain valve 102 is installed at the connection between the drain pipe 101 and the modified tank 1.

[0030] An exhaust pipe 7 is installed on the outer wall of the top of the modified tank 1;

[0031] The top of the turntable 3 is provided with a slot 301, and the slot 301 engages with the protrusion 401 at the bottom of the mesh cylinder 4;

[0032] Both sides of the net cylinder 4 are provided with clamping rods 13, and the clamping rods 13 are engaged with the limiting grooves 402 on the outer wall of the net cylinder 4;

[0033] The clamping arm 10 is equipped with a bidirectional lead screw 15, and one end of the bidirectional lead screw 15 extends to the outside of the clamping arm 10 and is equipped with a knob 17. The outer walls on both sides of the bidirectional lead screw 15 are threaded with sliders 16, and the bottom end of the sliders 16 is welded to the clamping rod 13.

[0034] A second motor 18 is installed at the bottom of the lifting frame 12, and a lifting screw 19 is installed at the output end of the second motor 18. Guide rods 20 are fixed inside the lifting frame 12 on both sides of the lifting screw 19. One end of the cross frame 11 passes through the lifting frame 12 and is threadedly connected to the lifting screw 19. One end of the cross frame 11 is slidably sleeved with the guide rod 20.

[0035] Specifically, the second motor 18 drives the lifting screw 19 to rotate in the opposite direction, causing the crossbar 11 to move upward along the guide rod 20, raising the mesh cylinder 4 above the modification tank 1. Then, the knob 17 is rotated to make the bidirectional screw 15 rotate, causing the slider 16 to drive the clamping rod 13 to move horizontally to both sides. The clamping rod 13 separates from the limiting groove 402, and the mesh cylinder 4 can be removed, making it easier to remove the hydrogel.

[0036] In this embodiment, the following steps are taken: First, the aged wet gel is placed into the mesh cylinder 4. The second motor 18 is started, causing the lifting screw 19 to rotate, which moves the crossbar 11 down along the guide rod 20, lowering the mesh cylinder 4 into the modification tank 1 and placing it at the top of the turntable 3. The protrusion 401 engages with the slot 301, securing the mesh cylinder 4 to the turntable 3. The cover plate 8 is lowered to the top of the modification tank 1, and the sealing ring 14 seals the cover plate 8 and the modification tank 1. Then, the first motor 2 drives the turntable 3 to rotate, which in turn drives the mesh cylinder 4 to rotate, centrifuging and dehydrating the wet gel inside the mesh cylinder 4. The water in the pores of the wet gel is ejected, and the drain valve 102 is opened to allow water to drain through the drain pipe 101. Next, the heating block 103 is energized to heat the wet gel. During the heating process, the water in the pores of the wet gel is evaporated, and the water vapor passes through... The solution is discharged through the exhaust pipe 7. After the water has evaporated, the pump body 6 is started to draw out the modified liquid from the storage tank 5 and transport it into the modified tank 1. The wet gel is soaked in the modified liquid, which enters the pores of the wet gel to react and modify the gel. The device adopts a method of first centrifugation and then evaporation to dehydrate, which has high dehydration efficiency and is more thorough. It also greatly shortens the heating time and prevents the gel from cracking due to prolonged heating. Finally, the second motor 18 drives the lifting screw 19 to rotate in the opposite direction, so that the crossbar 11 moves up along the guide rod 20 and raises the mesh cylinder 4 above the modified tank 1. Then, the knob 17 is rotated to make the bidirectional screw 15 rotate, so that the slider 16 drives the clamping rod 13 to move horizontally to both sides. The clamping rod 13 separates from the limiting groove 402, so that the mesh cylinder 4 can be removed, making it easy to take out the hydrogel.

[0037] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

Claims

1. A solvent displacement modification device for aerogel preparation, characterized in that, The system includes a modification tank (1), a turntable (3), a mesh cylinder (4), a storage tank (5), and a lifting frame (12). The mesh cylinder (4) is located inside the modification tank (1). The turntable (3) is mounted on the bottom of the modification tank (1) below the mesh cylinder (4) via bearings. A first motor (2) is installed at the bottom of the modification tank (1), and the output end of the first motor (2) is fixedly connected to the turntable (3). A clamping arm (10) is provided at the top of the mesh cylinder (4), and the clamping arm (10) is connected to the cover plate (8) at the top of the modification tank (1) via a rotating shaft (9). A sealing ring (14) is glued to the bottom of the cover plate (8). The sealing ring (14) is tightly fitted to the inner wall of the modified tank (1). A cross frame (11) is fixed above the cover plate (8). Heating blocks (103) are installed inside the side walls of the modified tank (1). The lifting frame (12) is set on one side of the modified tank (1). The storage tank (5) is set on the other side of the modified tank (1). A pump body (6) is installed at the top of the storage tank (5). The input end of the pump body (6) is connected to the storage tank (5), and the output end of the pump body (6) is connected to the modified tank (1).

2. The solvent displacement modification device for aerogel preparation according to claim 1, characterized in that: A drain pipe (101) is installed on one side of the bottom of the modified tank (1), and a drain valve (102) is installed at the connection between the drain pipe (101) and the modified tank (1).

3. The solvent displacement modification device for aerogel preparation according to claim 1, characterized in that: An exhaust pipe (7) is installed on the outer wall of the top of the modified tank (1).

4. The solvent displacement modification device for aerogel preparation according to claim 1, characterized in that: The top of the turntable (3) is provided with a slot (301), and the slot (301) engages with the protrusion (401) at the bottom of the mesh cylinder (4).

5. The solvent displacement modification device for aerogel preparation according to claim 1, characterized in that: Both sides of the net cylinder (4) are provided with clamping rods (13), and the clamping rods (13) engage with the limiting grooves (402) on the outer wall of the net cylinder (4).

6. The solvent displacement modification device for aerogel preparation according to claim 1, characterized in that: The clamping arm (10) is equipped with a bidirectional lead screw (15), and one end of the bidirectional lead screw (15) extends to the outside of the clamping arm (10) and is equipped with a knob (17). The outer walls on both sides of the bidirectional lead screw (15) are threaded with sliders (16), and the bottom end of the sliders (16) is welded to the clamping rod (13).

7. The solvent displacement modification device for aerogel preparation according to claim 1, characterized in that: The bottom of the lifting frame (12) is equipped with a second motor (18), and the output end of the second motor (18) is equipped with a lifting screw (19). Guide rods (20) are fixed inside the lifting frame (12) on both sides of the lifting screw (19). One end of the cross frame (11) passes through the lifting frame (12) and is threadedly connected to the lifting screw (19). One end of the cross frame (11) is slidably sleeved with the guide rod (20).

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