A production system of a water-washing resistant silica aerogel composite thermal insulation fabric

Abstract

This invention relates to the field of composite fabric production technology and provides a production system for a water-resistant silica aerogel composite thermal insulation fabric. The system includes a substrate, a coating roller disposed within the substrate, and two pressing rollers disposed within the substrate. The substrate contains two sets of first cleaning mechanisms and two sets of second cleaning mechanisms. The first cleaning mechanism includes a strip-shaped component and a first scraper strip disposed on the strip-shaped component and in close contact with the pressing rollers. Several suction nozzles capable of absorbing slurry are arranged on both ends of the strip-shaped component for sucking up the slurry scraped off by the first scraper strip. The second cleaning mechanism includes a base platform that can move towards / away from the composite fabric and a second scraper strip disposed on the base platform. The base platform has an inner groove for collecting the scraped-off slurry. This system solves the problem of overflowing silica aerogel slurry contaminating the pressing rollers and the composite fabric, and also allows for the recycling of overflowing silica aerogel slurry, avoiding waste of production materials.

Description

Technical Field

[0001] This invention relates to the field of composite fabric production technology, specifically a production system for a water-resistant silica aerogel composite thermal insulation fabric. Background Technology

[0002] With the rapid development of science and technology and the continuous improvement of people's living standards, the functional requirements for textiles are also increasing. In particular, in the field of down jackets, the demand for thermal insulation performance is particularly prominent. Silica aerogel, as a material with excellent thermal insulation performance, has broad application prospects in the field of thermal insulation fabrics due to its high specific surface area, low thermal conductivity, and water resistance.

[0003] In the production process of water-resistant silica aerogel composite thermal insulation fabric, the prepared silica aerogel slurry is first coated on the base fabric, and then a layer of fabric is covered. The fabric is then pressed by pressing rollers. During pressing, due to the squeezing action, the silica aerogel slurry often overflows from both sides of the fabric. This not only adheres to and contaminates the pressing rollers, requiring frequent machine stops for cleaning and affecting pressing efficiency, but also contaminates the composite fabric itself, reducing product quality and appearance. In addition, the overflowing silica aerogel slurry also causes material waste.

[0004] Therefore, this invention proposes a production system for silica aerogel composite thermal insulation fabric to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a production system for a water-resistant silica aerogel composite thermal insulation fabric to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A production system for a water-resistant silica aerogel composite thermal insulation fabric includes a substrate, a coating roller disposed in the substrate, and two pressing rollers disposed in the substrate. The substrate is provided with two sets of first cleaning mechanisms and two sets of second cleaning mechanisms. The two sets of first cleaning mechanisms correspond to the two pressing rollers respectively and are used to clean the silica aerogel slurry adhering to the pressing rollers. The two sets of second cleaning mechanisms correspond to the two sides of the pressed composite fabric respectively and are used to clean the overflowing slurry.

[0008] The first cleaning mechanism includes a strip and a first scraper provided on the strip and in close contact with the pressing roller. Several suction nozzles for absorbing slurry are arranged on both ends of the strip for sucking up the slurry scraped off by the first scraper.

[0009] The second cleaning mechanism includes a base that can move away from / approach the composite fabric and a second scraper provided on the base, the base having an inner groove for collecting the scraped slurry.

[0010] In one alternative: a telescopic component is provided between the base and the base body.

[0011] In one alternative: each of the suction nozzles is provided with an independent on / off valve.

[0012] In one alternative: the substrate is provided with a collection box and a suction fan whose discharge end is connected to the inside of the collection box; the strip is hollow inside and connected to each suction nozzle; a guide pipe is provided between the strip and the bottom of the filter cartridge and the suction end of the suction fan; wherein the guide pipe between the bottom of the filter cartridge and the suction fan is a flexible hose.

[0013] In one alternative: the collection box is equipped with a filter cartridge for filtering out contaminants entrained in the recycled slurry.

[0014] In one alternative: the filter cartridge is rotatably disposed in the collection box, and the collection box is provided with a fixed propeller, the propeller being directly opposite the discharge port of the suction fan.

[0015] In one alternative: the upper edge of the inner groove near the composite fabric is flush with the scraping side of the second scraper, a limiting plate that can move towards / away from the base is provided on the second scraper, and a sealing ring is provided between the limiting plate and the second scraper at the point where the second scraper penetrates the second scraper.

[0016] In one alternative: the production system further includes a drive mechanism for simultaneously moving the limiting plates in the two sets of second cleaning mechanisms toward / away from the corresponding base. The drive mechanism includes a connecting rod that movably passes through the two limiting plates, a lead screw rotatably disposed in the base, and a drive component for driving the lead screw to rotate. The lead screw is fitted with a threaded internal thread tube, and the end of the internal thread tube away from the lead screw is fixedly connected to the connecting rod.

[0017] Compared with the prior art, the beneficial effects of the embodiments of the present invention are as follows:

[0018] The first scraper in the first cleaning mechanism intercepts the slurry adhering to the pressing roller and absorbs the intercepted slurry through the suction nozzle, thus cleaning the pressing roller. The second scrapers in the two sets of second cleaning mechanisms contact the two sides of the pressed composite fabric respectively. When the composite fabric is transported, the overflowing slurry is scraped off by the second scraper and flows into the inner groove under gravity for temporary storage, thus cleaning the sides of the fabric. This not only solves the problem of overflowing silica aerogel slurry contaminating the pressing roller and the composite fabric, but also allows the overflowing silica aerogel slurry to be recycled, avoiding waste of production materials.

[0019] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. Furthermore, these drawings and textual descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this application to those skilled in the art through reference to specific embodiments.

[0021] Figure 1 This is a schematic diagram of the structure of the present invention.

[0022] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0023] Figure 3 This is a schematic diagram of the structure of the first cleaning mechanism in this invention.

[0024] Figure 4 This is a schematic diagram showing the arrangement of the two sets of second cleaning mechanisms in this invention.

[0025] Figure 5 for Figure 4 Enlarged view of section B in the middle.

[0026] Figure 6 This is a top sectional view of the material collection box, filter cylinder, and propeller in this invention.

[0027] Figure 7 This is a schematic diagram showing the state of the side of the composite fabric during the scraping process when there is no base or limiting plate on the side.

[0028] Figure reference numerals: 1-substrate, 2-coating roller, 3-pressing roller, 4-drive mechanism, 401-drive component, 402-screw, 403-internal threaded tube, 404-connecting rod, 5-base, 6-suction fan, 7-collection box, 8-filter cartridge, 9-propeller, 10-strip component, 11-first scraper, 12-suction nozzle, 13-shut-off valve, 14-guide tube, 15-limiting plate, 16-second scraper, 17-sealing ring, 18-inner groove, 19-telescopic component. Detailed Implementation

[0029] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0030] Please see Figures 1-5 A production system for a water-resistant silica aerogel composite thermal insulation fabric includes a substrate 1, a coating roller 2 disposed in the substrate 1, and two pressing rollers 3 disposed in the substrate 1. The substrate 1 is provided with two sets of first cleaning mechanisms and two sets of second cleaning mechanisms. The two sets of first cleaning mechanisms correspond to the two pressing rollers 3 respectively and are used to clean the silica aerogel slurry adhering to the pressing rollers 3. The two sets of second cleaning mechanisms correspond to the two sides of the pressed composite fabric respectively and are used to clean the overflowing slurry.

[0031] The first cleaning mechanism includes a strip 10 and a first scraper 11 disposed on the strip 10 and in close contact with the pressing roller 3. Several suction nozzles 12 that can absorb slurry are arranged on both ends of the strip 10 for sucking up the slurry scraped off by the first scraper 11.

[0032] The second cleaning mechanism includes a base 5 that can move away from / approach the composite fabric and a second scraper 16 provided on the base 5. The base 5 is provided with an inner groove 18 for collecting the scraped slurry.

[0033] First, a silica aerogel slurry is coated onto the composite surface of the base fabric using a coating roller 2. Then, the composite fabric is covered on top and pressed together by two pressing rollers 3 before being discharged. During the pressing process, as the pressing rollers 3 rotate, the first scraper 11 in the first cleaning mechanism intercepts the slurry adhering to the pressing rollers 3 and absorbs the intercepted slurry through the suction nozzle 12, thus cleaning the pressing rollers. The second scrapers 16 in the two sets of second cleaning mechanisms contact the two sides of the pressed composite fabric respectively. When the composite fabric is transported, the overflowing slurry is scraped off by the second scraper 16 and flows into the inner groove 18 under gravity for temporary storage, thus cleaning the edges of the fabric. This not only solves the problem of overflowing silica aerogel slurry contaminating the pressing rollers 3 and the composite fabric, but also allows for the recycling of the overflowing silica aerogel slurry, avoiding waste of production materials.

[0034] Furthermore, a telescopic component 19 is provided between the base 5 and the base body 1 (the telescopic component 19 can be a hydraulic cylinder, a pneumatic cylinder, an electric telescopic rod, etc., as long as it can realize the telescopic function, and is not limited here). The telescopic component 19 is extended and retracted to move the base 5 away from / near the fabric, so that the position of the second scraper 16 matches the actual width of the composite fabric (the scraping side of the second scraper 16 is in contact with and attached to the side of the composite fabric).

[0035] Furthermore, each of the suction nozzles 12 is provided with an independent on / off valve 13, which is a solenoid valve. The on / off valve 13 is used to open and close the suction nozzles 12. The suction nozzles 12 near the edge of the composite fabric are selectively opened according to the actual width of the composite fabric, rather than all of them being opened.

[0036] Please see Figures 1-6 In one embodiment of the present invention, the substrate 1 is provided with a collection box 7 and a suction fan 6 whose discharge end is connected to the inside of the collection box 7. The strip 10 is hollow inside and connected to each suction nozzle 12. The bottom of the strip 10 and the filter cylinder 8 are provided with a guide pipe 14 that is connected to the suction end of the suction fan 6. The guide pipe 14 between the bottom of the filter cylinder 8 and the suction fan 6 is a flexible tube. The suction fan 6 generates suction to draw the slurry intercepted by the first scraper 11 on the pressing roller 3 and the slurry flowing into the inner groove 18 to the collection box 7 for collection and subsequent processing.

[0037] Furthermore, in this embodiment, the collection box 7 is provided with a filter cartridge 8 for filtering out contaminants entrained in the recycled slurry. Moreover, the filter cartridge 8 is rotatably disposed in the collection box 7, and the collection box 7 is provided with a fixed propeller 9. The propeller 9 is directly opposite to the discharge port of the suction fan 6. When the suction fan 6 discharges slurry into the collection box 7, the airflow impacts the propeller 9, thereby driving the filter cartridge 8 to rotate. Through centrifugal force, the slurry in the filter cartridge 8 is efficiently filtered.

[0038] Please see Figure 1 , Figure 4 , Figure 5 and Figure 7 In one embodiment of the present invention, the upper edge of the inner groove 18 near the composite fabric is flush with the scraping side of the second scraper 16. The second scraper 16 is provided with a limiting plate 15 that can move towards / away from the base 5, and a sealing ring 17 is provided between the limiting plate 15 and the second scraper 16 at the point where the second scraper 16 passes through it.

[0039] In this embodiment, the position of the second scraper 16 is first adjusted so that its scraping side contacts the edge of the composite fabric. Then, the limiting plate 15 moves closer to the base 5 until it adheres to the composite fabric. At this time, both sides of the edge portion of the composite fabric are in contact with the base 5 and the limiting plate 15, respectively. Through the limiting effect of the base 5 and the limiting plate 15, the slurry is prevented from adhering to the edge of the composite fabric during scraping and cleaning (e.g., ...). Figure 7 As shown, the material cannot be effectively cleaned. The purpose of setting the sealing ring 17 is to prevent the slurry from penetrating into the gap where the limiting plate 15 is penetrated by the second scraper 16, which is difficult to clean.

[0040] Furthermore, in this embodiment, the production system also includes a drive mechanism 4 for simultaneously moving the limiting plates 15 in the two sets of second cleaning mechanisms closer to / away from the corresponding base 5. The drive mechanism 4 includes a connecting rod 404 that movably passes through the two limiting plates 15, a lead screw 402 rotatably disposed in the base 1, and a drive component 401 for driving the lead screw 402 to rotate (the drive component 401 is a rotating device such as a motor or geared motor in the prior art, which is prior art and will not be described in detail here). A threaded tube 403 with a threaded fit is fitted on the rod 402, and the end of the threaded tube 403 away from the lead screw 402 is fixedly connected to the connecting rod 404. The connecting rod 404 is movably engaged with the two limiting plates 15 to meet the position adjustment requirements of the base 5. Under the threaded engagement of the lead screw 402 and the threaded tube 403, the connecting rod 404 can be moved away from / closer to the base 5 by the drive member 401 driving the lead screw 402 to rotate, thereby realizing that the two limiting plates 15 move away from / closer to the corresponding base 5 at the same time.

[0041] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A production system for a water-resistant silica aerogel composite thermal insulation fabric, comprising a substrate (1), a coating roller (2) disposed in the substrate (1), and two pressing rollers (3) disposed in the substrate (1), characterized in that, The substrate (1) is provided with two sets of first cleaning mechanisms and two sets of second cleaning mechanisms. The two sets of first cleaning mechanisms correspond to two pressing rollers (3) respectively and are used to clean the silica aerogel slurry adhering to the pressing rollers (3). The two sets of second cleaning mechanisms correspond to the two sides of the pressed composite fabric respectively and are used to clean the overflowing slurry. The first cleaning mechanism includes a strip (10) and a first scraper (11) disposed on the strip (10) and in close contact with the pressing roller (3). Both ends of the strip (10) are provided with a plurality of suction nozzles (12) that can absorb slurry, for sucking up the slurry scraped off by the first scraper (11). The second cleaning mechanism includes a base (5) that can move away from / approach the composite fabric and a second scraper (16) provided on the base (5), wherein the base (5) is provided with an inner groove (18) for collecting the scraped slurry. The substrate (1) is provided with a collection box (7) and a suction fan (6) whose discharge end is connected to the inside of the collection box (7). The strip (10) is hollow inside and connected to each suction nozzle (12). The bottom of the strip (10) and the filter cylinder (8) are provided with a guide pipe (14) that is connected to the suction end of the suction fan (6). The guide pipe (14) between the bottom of the filter cylinder (8) and the suction fan (6) is a flexible hose. The collection box (7) is equipped with a filter cartridge (8) for filtering out contaminants carried in the recycled slurry; The filter cartridge (8) is rotatably disposed in the collection box (7), and the collection box (7) is provided with a fixed propeller (9), which is directly opposite to the discharge port of the suction fan (6); The upper edge of the inner groove (18) near the composite fabric is flush with the scraping side of the second scraper (16). The second scraper (16) is provided with a limiting plate (15) that can move towards / away from the base (5). A sealing ring (17) is provided between the limiting plate (15) and the second scraper (16) at the point where the second scraper (16) passes through it. The production system also includes a drive mechanism (4) for moving the limiting plates (15) in the two sets of second cleaning mechanisms simultaneously toward / away from the corresponding base (5). The drive mechanism (4) includes a connecting rod (404) that movably passes through the two limiting plates (15), a lead screw (402) rotatably disposed in the base (1), and a drive component (401) for driving the lead screw (402) to rotate. The lead screw (402) is fitted with a threaded internal thread tube (403), and the end of the internal thread tube (403) away from the lead screw (402) is fixedly connected to the connecting rod (404).

2. The production system for water-resistant silica aerogel composite thermal insulation fabric according to claim 1, characterized in that, A telescopic component (19) is provided between the base (5) and the base (1).

3. The production system for water-resistant silica aerogel composite thermal insulation fabric according to claim 1, characterized in that, Each of the suction nozzles (12) is equipped with an independent on / off valve (13).

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