Aerogel felt pad preparation system
By designing the aerogel felt pad preparation system, using sealing devices and non-contact accelerators and other technical means, the problem of volatility and spillage of activators and modifiers is solved, and efficient and environmentally friendly aerogel felt pad preparation is achieved, meeting the needs of industrial production.
Patent Information
- Application Number
- CN202421619846.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-09
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-07-09
AI Technical Summary
The existing aerogel felt pad preparation equipment has problems of volatilization and spillage of activators and modifiers, resulting in increased production risks and unstable device operation.
A kind of aerogel felt pad preparation system is designed, including raw and auxiliary material devices, gel aging devices, replacement devices, modification drying devices and sealing devices. The sealing devices prevent the volatility and overflow of the replacement liquid and the modified liquid, and the non-contact accelerator and ultrasonic modified accelerator are used to improve production efficiency and safety.
Effectively prevent the volatility and spillover of activators and modifiers, ensure production safety, improve production efficiency, reduce environmental pollution, and meet the needs of large-scale industrial production.
Smart Images
Figure CN223170878U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of aerogel material preparation, and particularly relates to a preparation system for aerogel felt pads. Background Art
[0002] Aerogel is a solid material with a nano-porous structure, having excellent properties such as low density, low thermal conductivity, and high specific surface area, and is widely used in the fields of heat insulation, adsorption, catalysis, energy storage, etc. Among them, as an important application form of aerogel, aerogel felt pads are more suitable for industrial production and application due to their good softness, high mechanical strength, and easy processing.
[0003] Traditional preparation processes for aerogel felt pads usually adopt an intermittent production method, which has many drawbacks, such as a long production cycle, complex processes, low production efficiency, etc., and it is difficult to meet the requirements of large-scale production. In addition, halogen-containing chemical reagents are often used in traditional processes, which not only increases production costs but also causes environmental pollution. At present, the market demand for aerogel felt pads is increasing continuously, and there is an urgent need for an efficient, environmentally friendly, and automated continuous preparation equipment and method to improve production efficiency, reduce production costs, and reduce the negative impact on the environment.
[0004] Currently, there has also appeared a continuous modification equipment for aerogel felt pads, which can achieve chlorine-free and alcohol-free aerogel modification and drying. However, this equipment does not have a corresponding sealing structure, which is prone to the volatilization and spillage of activators and modifiers, resulting in an increase in production risks and affecting the operation of different regional modules. Summary of the Utility Model
[0005] The main purpose of the utility model is to propose a preparation system for aerogel felt pads, aiming to solve the problem of volatilization and spillage of activators and modifiers in existing aerogel preparation equipment.
[0006] To achieve the above object, a preparation system for aerogel felt pads proposed by the utility model includes:
[0007] A raw and auxiliary material device, which is used to generate a sol composite material;
[0008] A gel aging device, which is arranged on one side of the raw and auxiliary material device, and is used to solidify and age the sol composite material;
[0009] A replacement device, which is arranged on one side of the gel aging device, and is used to make the aged gel material loaded with a replacement liquid;
[0010] A modified drying device is provided on one side of the replacement device. The modified drying device is used to modify and dry the gel material loaded with the replacement liquid to produce an aerogel felt pad.
[0011] Three sealing devices. There are three sealing devices. The first sealing device is arranged on the feeding side of the replacement device, the second sealing device is arranged between the discharging side of the replacement device and the feeding side of the modified drying device, and the third sealing device is arranged on the discharging side of the modified drying device.
[0012] A conveying device that sequentially passes through the gel aging device, the first sealing device, the replacement device, the second sealing device, the modified drying device, and the third sealing device. The conveying device is used to convey the materials in the previous device to the next device.
[0013] In one embodiment, the sealing device includes a bent tubular structure, and the bent tubular structure is filled with a sealing liquid.
[0014] In one embodiment, the bent tubular structure includes a first sealing tube that slopes downward and a second sealing tube that is connected to the first sealing tube and slopes upward.
[0015] In one embodiment, the sealing device further includes a horizontally arranged feeding section and a discharging section. The feeding section is arranged at one end of the bent tubular structure, and the discharging section is arranged at the other end of the bent tubular structure.
[0016] In one embodiment, the gel aging device includes a connected gel device and an aging device. A curing accelerator is provided on the gel device, and an aging accelerator is provided on the aging device; and / or,
[0017] A replacement accelerator is provided on the replacement device.
[0018] In one embodiment, both the curing accelerator and the aging accelerator are non-contact accelerators, and the non-contact accelerator is one or more of a microwave accelerator, an infrared radiator, and a radio frequency radiator.
[0019] In one embodiment, the modified drying device includes a connected modification device and a drying device. A modification accelerator is provided on the modification device, and a hot gas conveying pipeline is arranged in the drying device. An air outlet hole facing the conveying device is provided on the hot gas conveying pipeline.
[0020] In one embodiment, there are two hot gas conveying pipelines. One of the hot gas conveying pipelines is arranged above the conveying device, and the other hot gas conveying pipeline is arranged below the conveying device.
[0021] In one embodiment, the modified accelerator is a flange-type ultrasonic modified accelerator.
[0022] In one embodiment, the aerogel felt pad preparation system further includes a product post-treatment device, and the product post-treatment device includes a refinement processing module and a packaging module.
[0023] The technical solution of the present utility model realizes the storage of raw and auxiliary materials, the preparation of sol, and the compounding of sol and substrate by adopting a raw and auxiliary material device. The preparation raw materials of the aerogel felt pad are the compound of sol and substrate. The present utility model adopts a raw and auxiliary material device to realize the preparation of the preparation raw materials of the aerogel felt pad, and can obtain a sol composite material. Specifically, the raw and auxiliary material device includes a sol module, and the preparation of the sol composite material is completed in the sol module; a pump pumps the sol composite material into a gel aging device, and the gel aging device can perform solidification treatment and aging treatment on the sol composite material to obtain a gel composite material; a conveying device drives the gel composite material through a first sealing device and into a replacement device, and the replacement liquid contained in the replacement device, namely a phase transfer agent and a catalyst, can enter the gel composite material, so that the gel composite material is loaded with the phase transfer agent and the catalyst, which can accelerate the modification speed in the subsequent modification stage and improve the modification effect in the latter stage; the conveying device drives the gel composite material after replacement treatment through a second sealing device and into a modified drying device, and after the gel composite material after replacement treatment is subjected to modified drying treatment, a rough product of the aerogel felt pad is obtained; the conveying device drives the rough product of the aerogel felt pad through a third sealing device and into a product post-treatment device. The present utility model is provided with sealing devices between the feeding side of the replacement device, the discharging side of the replacement device and the feeding side of the modified drying device, and on the discharging side of the modified drying device, which can effectively prevent the volatilization and dispersion of the replacement liquid and the modified liquid, ensure the safety of production, and will not affect the normal operation of other devices. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.
[0025] Figure 1 It is a schematic structural diagram of an embodiment of an aerogel felt pad preparation system provided by the present utility model;
[0026] Figure 2 For Figure 1 the structural diagram of the aging device in
[0027] Figure 3 is Figure 1 a schematic structural diagram of the sealing device in
[0028] Figure 4 is Figure 1 a schematic structural diagram of the replacement device in
[0029] Figure 5 is Figure 1 a schematic structural diagram of the modification device in
[0030] Figure 6 is Figure 5 a top - view structural diagram of the flanged ultrasonic modification accelerator in
[0031] Figure 7 is Figure 5 a side - view structural diagram of the flanged ultrasonic modification accelerator in
[0032] Figure 8 is Figure 1 a schematic structural diagram of the drying device in
[0033] Explanation of the reference numerals in the attached drawings:
[0034] 100, aerogel felt pad preparation system; 1, raw and auxiliary material device; 1A, sol module; 2, gel aging device; 2A, gel device; 2B, aging device; 2B1, first housing; 2B2, non - contact aging accelerator; 3, sealing device; 3A, first sealing tube; 3B, second sealing tube; 3C, sealing liquid; 3D, feeding section; 3E, discharging section; 4, replacement device; 4A, second housing; 4B, flanged ultrasonic replacement accelerator; 4C, replacement liquid supplement device; 5, modification and drying device; 5A, modification device; 5A1, third housing; 5A2, flanged ultrasonic modification accelerator; 5A3, modifier supplement device; 5B, drying device; 5B1, fourth housing; 5B2, exhaust drying device; 5B3, hot gas conveying pipeline; 5B4, air outlet; 6, product post - treatment device; 6A, fine - processing module; 6B, packaging module; 7, waste treatment device; 8, recycling device; 9, heating system; 10, gas supply system; 11, conveying device.
[0035] The realization of the purpose, functional features and advantages of the present utility model will be further described in conjunction with embodiments with reference to the accompanying drawings. Specific embodiments
[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
[0037] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.
[0038] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.
[0039] The traditional preparation process of aerogel felt pads usually adopts an intermittent production method, which has many drawbacks, such as a long production cycle, complex process, low production efficiency, etc., and it is difficult to meet the needs of large-scale production. In addition, halogen-containing chemical reagents are often used in the traditional process, which not only increases the production cost but also causes environmental pollution. At present, the market demand for aerogel felt pads is increasing continuously, and there is an urgent need for an efficient, environmentally friendly, and automated continuous preparation equipment and method to improve production efficiency, reduce production costs, and reduce the negative impact on the environment. At present, there has also appeared a continuous modification equipment for aerogel felt pads, which can achieve chlorine-free and alcohol-free aerogel modification and drying. However, this equipment does not have a corresponding sealing structure, which easily leads to the volatilization and spillage of activators and modifiers, resulting in an increase in production risks and affecting the operation of different regional modules.
[0040] In view of this, the present invention proposes an aerogel felt pad preparation system, aiming to solve the problem of volatilization and spillage of activators and modifiers in existing aerogel preparation equipment.
[0041] Please refer to Figure 1 In an embodiment of the present utility model, the aerogel felt pad preparation system 100 includes: a raw and auxiliary material device 1, a gel aging device 2, a replacement device 4, a modification and drying device 5, a sealing device 3, and a conveying device 11. The raw and auxiliary material device 1 is used to generate a sol composite material; the gel aging device 2 is arranged on one side of the raw and auxiliary material device 1, and the gel aging device 2 is used to cure and age the sol composite material; the replacement device 4 is arranged on one side of the gel aging device 2, and the replacement device 4 is used to make the aged gel material carry a replacement liquid; the modification and drying device 5 is arranged on one side of the replacement device 4, and the modification and drying device 5 is used to modify and dry the gel material carrying the replacement liquid to obtain an aerogel felt pad; there are three sealing devices 3. The first sealing device 3 is arranged on the feeding side of the replacement device 4, the second sealing device 3 is arranged between the discharging side of the replacement device 4 and the feeding side of the modification and drying device 5, and the third sealing device 3 is arranged on the discharging side of the modification and drying device 5; the conveying device 11 sequentially passes through the gel aging device 2, the first sealing device 3, the replacement device 4, the second sealing device 3, the modification and drying device 5, and the third sealing device 3, and the conveying device 11 is used to convey the material in the previous device to the next device.
[0042] The technical solution of the present utility model realizes the storage of raw and auxiliary materials, the preparation of sol, and the compounding of sol and substrate by adopting the raw and auxiliary material device 1. The preparation raw material of the aerogel felt pad is the compound of sol and substrate. The present utility model adopts the raw and auxiliary material device 1 to realize the preparation of the preparation raw material of the aerogel felt pad, and can prepare the sol composite material. Specifically, the raw and auxiliary material device 1 includes a sol module 1A, and the preparation of the sol composite material is completed in the sol module 1A; the pump pumps the sol composite material into the gel aging device 2, and the gel aging device 2 can carry out solidification treatment and aging treatment on the sol composite material to obtain the gel composite material; the conveying device 11 drives the gel composite material to pass through the first sealing device 3 and enter the displacement device 4. The displacement liquid contained in the displacement device 4, namely the phase transfer agent and the catalyst, can enter the gel composite material, so that the gel composite material is loaded with the phase transfer agent and the catalyst, which can accelerate the modification speed in the subsequent modification stage and improve the modification effect in the subsequent modification stage; the conveying device 11 drives the gel composite material after displacement treatment to pass through the second sealing device 3 and enter the modification and drying device 5. After the gel composite material after displacement treatment is subjected to modification and drying treatment, the rough aerogel felt pad is obtained; the conveying device 11 drives the rough aerogel felt pad to pass through the third sealing device 3 and enter the product post-treatment device. The present utility model is provided with sealing devices 3 between the feeding side of the displacement device 4, the discharging side of the displacement device 4 and the feeding side of the modification and drying device 5, and on the discharging side of the modification and drying device 5, which can effectively prevent the volatilization and overflow of the displacement liquid and the modification liquid, ensure the safety of production, and will not affect the normal operation of other devices. Specifically, the conveying device 11 can be a conveyor belt.
[0043] In order to better meet the continuous production, the aerogel felt pad preparation system of the present utility model further includes a product post-treatment device 6, a waste treatment device 7, a recovery device 8, a heating system 9, and a gas supply system 10. The product post-treatment device 6 includes a refinement treatment module 6A and a packaging module 6B. The conveying device 11 conveys the rough aerogel felt pad to the refinement treatment module 6A to perform forming, pressing and other treatments on the rough aerogel felt pad to obtain the aerogel felt pad. The conveying device 11 conveys the aerogel felt pad to the packaging module 6B to perform packaging treatment on the finally obtained aerogel felt pad. The waste treatment device 7 is used to treat the three wastes generated in the whole production section; the recovery device 8 is used to collect the materials generated in the whole production section for reuse, improving the resource utilization rate; the heating system 9 supplies heat to the devices that need heat source work through pipelines, and the gas supply system 10 supplies gas to the devices that need gas source work through pipelines. The above devices and systems are all prior arts and will not be elaborated here.
[0044] In order to better cure and age the sol composite, the gel aging device 2 of the present utility model includes a gel device 2A and an aging device 2B that are connected and communicate with each other. A curing accelerator is provided on the gel device 2A, and a non-contact aging accelerator is provided on the aging device 2B. It should be noted that the connected gel device 2A and aging device 2B means that the gel device 2A and the aging device 2B are connected and communicated so that the conveying device 11 can convey the material from the gel device 2A to the inside of the aging device 2B. In the gel device 2A, after the sol composite is cured, a non-flowable gel-like composite is formed. After the gel-like composite is further aged, a stable gel composite is formed. The structures of the gel device 2A and the aging device 2B are the same. For the convenience of description, the structure of the aging device 2B will be described here. Refer to Figure 2 , the aging device 2B includes a first housing 2B1 and a non-contact aging accelerator 2B2. A feed port is provided at the top of the first housing. The sol composite in the sol module 1A is pumped to the feed port and then falls into the inner cavity of the first housing. The inner cavity of the first housing forms a working space for aging treatment. The conveying device 11 penetrates through the working space for aging treatment. The non-contact aging accelerator is provided on the outer wall of the first housing. The non-contact aging accelerator can be one or more of microwave, infrared radiation, and radio frequency radiation. It can be understood that the curing accelerator can be one or more of microwave, infrared radiation, and radio frequency radiation.
[0045] In order to prevent the displacement liquid in the displacement device 4 from volatilizing or spilling, which may affect the safety of production and the normal operation of other devices, therefore, a first sealing device 3 is provided between the discharge side of the aging device 2B and the feed side of the displacement device 4. The conveying device 11 can penetrate through this sealing device 3 to convey the material in the aging device 2B to the inside of the displacement device 4. The structures of the three sealing devices are the same. The difference is that the sealing liquids contained in each sealing device are different according to the sealing requirements. Taking the first sealing device as an example, the structure of the sealing device will be described. Refer to Figure 3 , the sealing device 3 includes a bent tubular structure. The inner cavity of the bent tubular structure can be penetrated by the conveying device 11, and a sealing liquid 3C is contained in the bent tubular structure. Among them, the sealing liquid contained in the first sealing device is one of water, sodium sulfate solution, or acid solution; the sealing liquid contained in the second sealing device is the same as the displacement liquid in the displacement device; the sealing liquid contained in the third sealing device is water or sodium sulfate solution.
[0046] The technical solution of the present utility model adopts a bent tubular structure, which can not only better contain the sealing liquid, but also contribute to the spatial optimization of the structure, making the structure of the entire system more compact. It can be understood that the discharge end of the bent tubular structure is located above the liquid level of the displacement liquid in the displacement device 4.
[0047] Specifically, the bent tubular structure includes a first sealing tube 3A that slopes downward and a second sealing tube 3B that is connected to the first sealing tube 3A and slopes upward. It should be noted that sloping downward or upward refers to the position height of the discharge end relative to its feed end. For example, for the first sealing tube 3A, its discharge end is lower than its feed end. Therefore, the first sealing tube 3A slopes downward. Similarly, the upward-sloping second sealing tube 3B can be understood. The first sealing tube 3A and the second sealing tube 3B of the present invention form a "V" shape structure. In this way, the sealing liquid 3C can be contained more stably, and the structure is more compact, which is beneficial to the optimization of space.
[0048] In order to facilitate the conveying device 11 to pass through the first sealing device 3 more smoothly, in the direction of conveying along the conveying device 11, the cross-sectional dimensions of the first sealing tube 3A are the same; and / or, in the direction of conveying along the conveying device 11, the cross-sectional dimensions of the second sealing tube 3B are the same. Preferably, in the direction of conveying along the conveying device 11, the cross-sectional dimensions of the first sealing tube 3A are the same, and the cross-sectional dimensions of the second sealing tube 3B are the same.
[0049] In order to ensure that the first sealing device 3 can contain the sealing liquid 3C well and has a relatively compact structure, the included angle α formed between the first sealing tube 3A and the second sealing tube 3B is 40 to 75°. If the included angle formed between the first sealing tube 3A and the second sealing tube 3B is too large, the effect of containing the sealing liquid 3C is not good. Especially in the working state, conditions such as high temperature are likely to affect the height of the sealing liquid 3C; if the included angle formed between the first sealing tube 3A and the second sealing tube 3B is too small, it occupies more space and is not conducive to the optimization of space.
[0050] In order to ensure that the liquid level height of the sealing liquid 3C in the first sealing device 3 is always within the sealing tube, the height difference H between the highest point and the lowest point of the first sealing tube 3A is 1 to 3.5 m; and / or, the height difference between the highest point and the lowest point of the second sealing tube 3B is 1 to 3.5 m. Preferably, the height difference between the highest point and the lowest point of the first sealing tube 3A is 2 m, the height difference between the highest point and the lowest point of the second sealing tube 3B is 2 m, and the highest points of the first sealing tube 3A and the second sealing tube 3B are at the same horizontal height, that is, the connection line between the highest point of the first sealing tube 3A and the highest point of the second sealing tube 3B is parallel to the horizontal plane.
[0051] To ensure the strength of the first sealing tube 3A, the first sealing tube 3A is of an integrally formed structure; and / or, the second sealing tube 3B is of an integrally formed structure. Preferably, the first sealing tube 3A is of an integrally formed structure and the second sealing tube 3B is of an integrally formed structure. Further preferably, the first sealing tube 3A and the second sealing tube 3B are of an integrally formed structure.
[0052] To facilitate the conveyor belt to carry materials through the first sealing tube 3A, the cross-section of the first sealing tube 3A is circular or square; and / or, the cross-section of the second sealing tube 3B is circular or square.
[0053] To facilitate the installation of the first sealing device 3 and the smooth entry and exit of the conveying device 11 into and out of the first sealing device 3, the first sealing device 3 further includes a feeding section 3D and a discharging section 3E. The feeding section 3D is arranged at one end of the bent tubular structure, and the discharging section 3E is arranged at the other end of the bent tubular structure. It can be understood that the feeding section 3D is arranged at the feeding end of the first sealing tube 3A and is in communication with the first sealing tube 3A. The discharging section 3E is arranged at the discharging end of the second sealing tube 3B and is in communication with the second sealing tube 3B. The feeding section 3D is in communication with the discharging end of the aging device 2B, and the discharging section 3E is in communication with the feeding end of the replacement device 4.
[0054] To facilitate the installation of the first sealing device 3 and the stable entry and exit of the conveying device 11 into and out of the first sealing device 3, the feeding section 3D is arranged horizontally; and / or, the discharging section 3E is arranged horizontally. Preferably, the feeding section 3D and the discharging section 3E have the same structure and are both arranged horizontally.
[0055] The conveying device 11 drives the gel composite material to pass through the first sealing device 3 and enter the replacement device 4. Refer to Figure 4 , the replacement device 4 includes a second housing 4A, a flanged ultrasonic replacement accelerator 4B, and a replacement liquid replenishing device 4C. The inner cavity of the second housing 4A forms a working space for replacement treatment. The working space for replacement treatment is filled with a replacement liquid. The replacement liquid includes a phase transfer agent and a catalyst. The conveying device 11 passes through the lower part of the working space. The flanged ultrasonic replacement accelerator 4B is arranged at the upper part of the working space. The replacement liquid replenishing device 4C is arranged at the top of the second housing 4A. The replacement liquid replenishing device 4C is used to replenish the replacement liquid into the working space for replacement treatment according to production needs.
[0056] The technical solution of the present utility model enables the gel composite material to be in full contact with the displacement liquid in the displacement device 4, allowing the displacement liquid to enter the gel composite material more fully. The phase transfer agent helps the modifier enter the gel composite material faster and more uniformly, and the catalyst helps to enhance the subsequent modification speed, thereby contributing to accelerating the modification speed and effect in the subsequent modification stage, accelerating the discharge speed of the aqueous solution in the later stage, and preventing the influence of residual acid on the product performance. The phase transfer agent is selected from at least one of methanol, ethanol, n-propanol, isopropanol, tert-butanol, isobutanol, n-butanol, 1,3-butanediol, 1,4-butanediol, 2,3-butanediol, polyethylene glycol, polypropylene glycol, polyethylene glycol-propylene glycol block copolymer, diethylene glycol monomethyl ether, diethylene glycol monobutyl ether, triethylene glycol monomethyl ether, triethylene glycol monobutyl ether, tetraethylene glycol monomethyl ether, tetraethylene glycol monobutyl ether, acetone, 1,4-dioxane, hexane, 2-butanone; the catalyst is selected from at least one of sulfuric acid, nitric acid, phosphoric acid, formic acid, acetic acid, propionic acid, methanesulfonic acid, p-toluenesulfonic acid, benzoic acid, oxalic acid, citric acid, terephthalic acid, isophthalic acid.
[0057] The conveying device 11 drives the gel composite material after displacement treatment through the second sealing device 3 and into the modification and drying device 5. After the gel composite material after displacement treatment is subjected to modification and drying treatment, a crude product of aerogel felt pad is prepared. The structure of the second sealing device 3 is the same as that of the first sealing device 3. The modification and drying device 5 includes a connected modification device 5A and a drying device 5B. The modification device 5A and the drying device 5B are connected and arranged, facilitating the conveying device 11 to convey the material processed in the modification device 5A to the drying device 5B. Refer to Figure 5 , the modification device 5A includes a third housing 5A1, a flanged ultrasonic modification accelerator 5A2, and a modifier replenishing device 5A3. The inner cavity of the third housing 5A1 forms a working space for modification treatment. The conveying device 11 penetrates through the lower part of the working space for modification treatment. The flanged ultrasonic modification accelerator 5A2 is arranged at the upper part of the working space for modification treatment. The modifier replenishing device 5A3 is arranged at the upper part of the third housing 5A1. The modifier replenishing device 5A3 is used to replenish the modifier into the working space for modification treatment according to production needs. The structure diagram of the flanged ultrasonic modification accelerator 5A2 refers to Figure 6 and Figure 7 , the flanged ultrasonic modification accelerator 5A2 is fixed in the working space for modification treatment in the third housing 5A1 through a flange. The ultrasonic waves generated by it help to accelerate the modification speed and also help to improve the modification effect. The modifier is selected from at least one of hexamethyldisiloxane, octamethytrisiloxane, decamethyldisiloxane, dodecamethylpentasiloxane, hexamethyldisilazane, cyclohexamethyltrisiloxane, cyclooctamethyltetrasiloxane, cyclodecamethylpentasiloxane.
[0058] The conveying device 11 conveys the modified gel composite material into the drying device 5B. Refer to Figure 8 The drying device 5B includes a fourth housing 5B1, an exhaust drying device 5B2, and a hot gas conveying pipeline 5B3. The inner cavity of the fourth housing 5B1 forms a working space for drying treatment. The conveying device 11 penetrates through the middle of the working space for drying treatment. There are two hot gas conveying pipelines 5B3. One of the hot gas conveying pipelines 5B3 is arranged in the upper part of the working space for drying treatment, and the other hot gas conveying pipeline 5B3 is arranged in the lower part of the working space for drying treatment, that is, the two hot gas conveying pipelines 5B3 are distributed on the upper and lower sides of the conveying device 11. The hot gas conveying pipeline 5B3 is provided with air outlet holes 5B4 facing the conveying device 11. The hot gas in the hot gas conveying pipeline 5B3 flows out through the air outlet holes 5B4 to dry the gel composite material; the exhaust drying device 5B2 is arranged on the top of the fourth housing 5B1 to timely discharge the moisture generated during the drying treatment, so as to ensure the drying effect.
[0059] The method for preparing aerogel felt by using the above aerogel preparation system includes the following steps:
[0060] S10. Mix the raw and auxiliary materials in the raw and auxiliary material device to obtain a sol composite material;
[0061] S20. Pump the sol composite material obtained in step S10 into the gel aging device to carry out solidification and aging treatment on the sol composite material to obtain a gel composite material;
[0062] S30. The conveying device 11 drives the gel composite material obtained in step S20 to pass through the first sealing device and enter the displacement device filled with displacement liquid. The gel composite material is in full contact with the displacement liquid to obtain a gel composite material loaded with displacement liquid;
[0063] S40. The conveying device drives the gel composite material loaded with displacement liquid obtained in step S30 to pass through the second sealing device and enter the modification and drying device to carry out modification and drying treatment on the gel composite material to obtain an aerogel felt pad.
[0064] Among them, in the step S20, the temperature of the solidification treatment is 0 to 100 °C, the time of the solidification treatment is 10 s to 2 h, the temperature of the aging treatment is 0 to 100 °C, and the time of the aging treatment is 1 min to 48 h; preferably, the temperature of the solidification treatment is 40 to 50 °C, the time is 40 to 50 min, the temperature of the aging treatment is 60 to 70 °C, and the time is 4 to 5 h.
[0065] In the step S30, the temperature during the displacement treatment is 0 to 75 °C, and the time of the displacement treatment is 10 min to 24 h; preferably, the temperature during the displacement treatment is 40 to 50 °C, and the time of the displacement treatment is 3 to 4 h.
[0066] In the step S40, the temperature during the modification treatment is 0 to 75 °C, the time of the modification treatment is 1 min to 5 h, the temperature during the drying treatment is 0 to 300 °C, and the drying time is 10 s to 3 h; preferably, the temperature during the modification treatment is 50 to 60 °C, the time of the modification treatment is 2 to 3 h, the temperature during the drying treatment is 120 to 160 °C, and the drying time is 40 to 50 min.
[0067] The above are only exemplary embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made under the technical concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.
Claims
1. An aerogel felt pad preparation system, characterized in that Comprising: Raw and auxiliary material device, which is used to generate sol composite material; Gel aging device, which is arranged on one side of the raw and auxiliary material device, and is used to solidify and age the sol composite material; Replacement device, which is arranged on one side of the gel aging device, and is used to make the aged gel material loaded with replacement liquid; Modifying and drying device, which is arranged on one side of the replacement device, and is used to modify and dry the gel material loaded with replacement liquid to obtain aerogel felt pad; Three sealing devices, the first sealing device is arranged on the feeding side of the replacement device, the second sealing device is arranged between the discharging side of the replacement device and the feeding side of the modifying and drying device, and the third sealing device is arranged on the discharging side of the modifying and drying device; Conveying device, which sequentially penetrates through the gel aging device, the first sealing device, the replacement device, the second sealing device, the modifying and drying device, and the third sealing device, and is used to convey the materials in the previous device to the next device.
2. The aerogel felt pad preparation system according to claim 1, wherein, The sealing device includes a bent tubular structure, and the bent tubular structure is filled with sealing liquid.
3. The aerogel felt pad preparation system according to claim 2, characterized in that The bent tubular structure includes a first sealing pipe inclined downward and a second sealing pipe connected to the first sealing pipe and inclined upward.
4. The aerogel felt pad preparation system according to claim 2, wherein The sealing device further includes a horizontally arranged feeding section and a discharging section, the feeding section is arranged at one end of the bent tubular structure, and the discharging section is arranged at the other end of the bent tubular structure.
5. The aerogel felt mat preparation system according to claim 1, characterized in that, The gel aging device includes a connected gel device and an aging device, a curing accelerator is arranged on the gel device, and an aging accelerator is arranged on the aging device; and / or, A replacement accelerator is arranged on the replacement device.
6. The aerogel felt pad preparation system according to claim 5, wherein Both the curing accelerator and the aging accelerator are non-contact accelerators, and the non-contact accelerator is one or more of a microwave accelerator, an infrared radiator, and a radio frequency radiator.
7. The aerogel felt pad preparation system according to claim 1, characterized in that, The modifying and drying device includes a connected modifying device and a drying device, a modifying accelerator is arranged on the modifying device, a hot gas conveying pipeline is arranged in the drying device, and air outlet holes facing the conveying device are arranged on the hot gas conveying pipeline.
8. The aerogel felt pad preparation system according to claim 7, characterized in that, There are two hot gas conveying pipelines, one of the hot gas conveying pipelines is arranged above the conveying device, and the other hot gas conveying pipeline is arranged below the conveying device.
9. The aerogel felt pad preparation system according to claim 7, characterized in that, The modifying accelerator is a flange type ultrasonic modifying accelerator.
10. The aerogel felt pad preparation system according to claim 1, characterized in that, The aerogel felt pad preparation system further includes a product post-treatment device, and the product post-treatment device includes a refinement processing module and a packaging module.