CN212375178U - Controllable fiber and sol automatic injection composite forming device - Google Patents
Controllable fiber and sol automatic injection composite forming device Download PDFInfo
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- CN212375178U CN212375178U CN202021002269.0U CN202021002269U CN212375178U CN 212375178 U CN212375178 U CN 212375178U CN 202021002269 U CN202021002269 U CN 202021002269U CN 212375178 U CN212375178 U CN 212375178U
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Abstract
The utility model provides a controllable formula fibre and automatic spouting composite forming device of sol belongs to thermal insulation material preparation technical field, including sol preparation facilities, automatic receipts transmission and automatic set composite, sol preparation facilities is used for preparing and stores the silica sol, and automatic receipts unreel transmission is used for installation and conveying fibrofelt, automatic set composite is including automatic confession glue system and spouting mechanism, and automatic confession glue system links to each other with sol preparation facilities and spouting mechanism respectively, is equipped with the shower nozzle in the spouting mechanism, automatic receipts are unreeled the fibrofelt on the transmission and are passed spouting mechanism, and the shower nozzle setting of spouting mechanism is in one side or both sides of fibrofelt, and the silica sol among the sol preparation facilities is from the shower nozzle spouting on the fibrofelt under the automatic drive of confession glue system. By adopting the device, the aerogel content in the composite material can be effectively controlled, the waste of sol is reduced, and the production cost is reduced.
Description
Technical Field
The utility model belongs to the technical field of thermal insulation material preparation, a controllable formula fibre and automatic compound forming device of spouting of colloidal sol is related to.
Background
The silica aerogel is a nano porous light material and has excellent heat insulation performance. Compared with the traditional heat-insulating material, the silica aerogel heat-insulating material has the characteristics of small density, low heat conductivity coefficient, good heat resistance and flame retardance, good hydrophobic property, long service life, convenient construction and maintenance and the like, and the application of the silica aerogel heat-insulating material in various fields is in a rapid expansion trend in recent years. In the automatic mass production of the silica aerogel thermal insulation material, how to realize the controllable and uniform composite molding of the fiber and the sol is a key core technical guarantee for finally obtaining a uniform aerogel thermal insulation material product. The existing production process of the silicon dioxide aerogel thermal insulation material generally adopts a mode of immersing a fibrofelt into silica sol, so that the content of the aerogel in the composite material cannot be controlled, and the waste of the sol is easily caused.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a controllable formula fibre and automatic compound forming device of spouting of colloidal sol adopts the aerogel content in the device can the effective control combined material, has reduced the waste of colloidal sol, has reduced manufacturing cost.
The utility model discloses a following technical scheme realizes:
a controllable fiber and sol automatic injection composite forming device comprises a sol preparation device, an automatic winding and unwinding transmission device and an automatic composite device, wherein the sol preparation device is used for preparing and storing silica sol, the automatic winding and unwinding transmission device is used for installing and transmitting fibrofelt, the automatic composite device comprises an automatic glue supply system and an injection mechanism, the automatic glue supply system is respectively connected with the sol preparation device and the injection mechanism, a spray head is arranged on the injection mechanism, the fibrofelt on the automatic winding and unwinding transmission device penetrates through the injection mechanism, the spray head of the injection mechanism is arranged on one side or two sides of the fibrofelt, and the silica sol in the sol preparation device is injected on the fibrofelt from the spray head under the driving of the automatic glue supply system.
Further, automatic receive and release roll transmission device includes two circle rollers and several guide rolls, the fibrofelt is installed on two circle rollers and through circle roller drive and conveying, and several guide rolls set up between two circle rollers, circle roller and guide roll are parallel to each other.
Furthermore, the automatic composite device is arranged above the fibrofelt, the injection mechanism of the automatic composite device comprises one or more spray heads, the spray heads are downwards aligned with the surface of the fibrofelt, the two guide rollers are consistent in height, and the two guide rollers are respectively arranged on two sides below the spray heads and enable the fibrofelt to horizontally pass below the spray heads.
Or the injection mechanism comprises two vertical hollow plates and a plurality of spray heads, the tops of the hollow plates are communicated with the automatic glue supply system, the plurality of spray heads are horizontally connected to the inner side surfaces of the two hollow plates, a horizontal strip-shaped hole is formed in the single-side hollow plate, the width of the strip-shaped hole is larger than that of the fibrofelt, and the fibrofelt penetrates out of the injection mechanism from the strip-shaped hole after vertically penetrating through the spray head gaps of the two hollow plates.
Furthermore, the spray heads are connected to the middle and the lower portion of the hollow plate, the height of the strip-shaped holes is larger than that of the spray heads, and the shape and the trend of the fibrofelt in the injection mechanism are adjusted through the guide rollers.
Furthermore, the liquid level sprayed by the spray head is fan-shaped, and the fan-shaped spraying angle is 10-80 degrees; the injection pressure is 0.1-0.6 MPa; the distance between the spray head and the surface of the fiber felt is 10-100 mm.
Further, the automatic glue supply system comprises a liquid storage tank and a flow pump, and the winding speed and the flow pump of the automatic winding and unwinding transmission device are controlled to operate through a controller.
The composite molding device also comprises a drying device.
The utility model discloses in, the flow pump of adoption, the controller, sol preparation facilities receive and releases the transmission device automatically and be current structure or equipment, and its structure and theory of operation are no longer detailed here.
A method for controllable fiber and sol automatic injection composite molding in aerogel thermal insulation material production comprises the following steps:
mixing a silicon precursor, an alcohol solvent and water, stirring in a sol preparation device under the action of a catalyst I, adding a catalyst II for reaction to prepare silica sol, and installing a fibrofelt on an automatic winding and unwinding transmission device;
uniformly spraying and injecting the silica sol into pores of the fibrofelt through an automatic compounding device to obtain a fiber/silica sol composite material;
and keeping the fiber/silica sol composite material for a period of time to form gel, and drying to obtain the fiber/silica aerogel thermal insulation material.
The preparation method of the silica sol comprises the following steps: mixing the silicon precursor, alcohol solvent and water in proportion, and adding a catalyst to react to obtain the silica sol.
Further, the silicon precursor is one or more of tetraethoxysilane, methyl orthosilicate, methyl trimethoxysilane, methyl triethoxysilane, dimethyl dimethoxysilane, dimethyl diethoxysilane, trimethyl methoxysilane and trimethyl ethoxysilane, and the alcohol solvent is one or more of methanol, ethanol and isopropanol.
Further, the mass ratio of the silicon precursor to the alcohol solvent to the water is 1: 0.8-15: 0.25-0.6, the first catalyst is any one of hydrochloric acid, nitric acid, acetic acid and oxalic acid, and the second catalyst is ammonia water.
Further, the fiber felt is one or more mixed fibers of alkali-free fibers, aluminum silicate fibers, basalt fibers, mullite fibers, quartz fibers, high-silicon-oxygen fibers and alumina fibers, and the width of the fiber felt is 200-2500 mm; the winding speed of the automatic winding and unwinding transmission device is 0.01-5 m/min.
Further, the glue injection amount of the silica sol is 50% -100% of the saturated glue content in the pores of the fibrofelt, the silica sol injection mode of the automatic compounding device comprises single-sided injection and double-sided injection, the single-sided injection is adopted when the thickness of the fibrofelt is less than 12mm, and the double-sided injection is adopted when the thickness of the fibrofelt is 8-25 mm.
Further, the drying process of the fiber/silica sol composite material adopts any one of normal pressure drying, alcohol supercritical drying and carbon dioxide supercritical drying.
The embodiment of the utility model provides an in one or more technical scheme, following technological effect or advantage have at least:
the utility model relates to an automatic spouting composite forming device of controllable formula fibre and colloidal sol, adopt automatic receipts and unreel transmission device conveying fibrofelt, the fibrofelt is through automatic set composite, spouting mechanism in the automatic set composite adopts single face or two-sided spouting mode with the silica sol spraying in the fibrofelt, through adjusting automatic transmission speed and the shower nozzle injection angle of unreeling transmission device, the shower nozzle height, injection pressure can control the injecting glue volume, realize different materials, different thickness, the even complex of different breadth fibrofelt and silica sol, the waste of colloidal sol has been reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of a controllable fiber and sol automatic injection composite molding device according to the present invention;
FIG. 2 is a schematic view of an automatic compounding device according to embodiment 1 of the present invention;
fig. 3 is a schematic view of an automatic compounding device according to embodiment 2 of the present invention.
In the figure: the method comprises the following steps of 1-a sol preparation device, 2-an automatic winding and unwinding transmission device, 21-a round roller, 22-a guide roller, 3-an automatic compounding device, 31-an automatic glue supply system, 32-a spraying mechanism, 33-a spray head, 34-a hollow plate, 35-a strip-shaped hole, 4-a fiber felt, 5-a controller and 6-a drying device.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments and examples, and the advantages and various effects of the present invention will be more clearly apparent from the description. It will be understood by those skilled in the art that the present embodiments and examples are illustrative of the present invention, and are not to be construed as limiting the invention.
Throughout the specification, unless otherwise specifically noted, terms used herein should be understood as having meanings as commonly used in the art. Accordingly, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. If there is a conflict, the present specification will control.
Unless otherwise specifically stated, various raw materials, reagents, instruments, equipment and the like used in the present invention are commercially available or can be prepared by an existing method.
The embodiment of the utility model provides a technical scheme is for solving above-mentioned technical problem, and the general thinking is as follows:
in order to reduce the waste to the sol, reach and adjust combined material sol content as required, improve the compound degree of consistency of fibrofelt and silica sol, the utility model provides a controllable formula fibre and the automatic compound forming device that insufflates of sol, adopt the mode of single face or two-sided spraying, accessible fibrofelt receive and releases the roll speed, spray pressure, shower nozzle injection angle and shower nozzle height, the coordinated control of shower nozzle functioning speed, realize different materials, different thickness, the even complex of different breadth fibrofelt and silica sol, easy operation is convenient, after the gel, dry, obtain even fibre reinforcing aerogel combined material, reduced the waste of sol simultaneously, and the production cost is reduced.
The method and the apparatus for the controllable fiber and sol automatic injection composite molding in the production of aerogel thermal insulation material according to the present application will be described in detail with reference to the following embodiments.
Example 1
A controllable fiber and sol automatic injection composite forming device comprises a sol preparation device 1, an automatic winding and unwinding transmission device 2 and an automatic composite device 3, wherein the sol preparation device 1 is used for preparing and storing silica sol, the automatic winding and unwinding transmission device 2 is used for installing and conveying a fibrofelt 4, the automatic composite device 3 comprises an automatic glue supply system 31 and an injection mechanism 32, the automatic glue supply system 31 is respectively connected with the sol preparation device 1 and the injection mechanism 32, a spray head 33 is arranged on the injection mechanism 32, the fibrofelt 4 on the automatic winding and unwinding transmission device 2 penetrates through the injection mechanism 32 in an injection mode, the spray head 33 of the injection mechanism 32 is arranged on one side or two sides of the fibrofelt 4, and the silica sol in the sol preparation device 1 is injected onto the fibrofelt 4 from the spray head 33 under the driving of the automatic glue supply system 31.
Further, automatic receive and release roll transmission device 2 includes two circle rollers 21 and several guide rolls 22, fibrofelt 4 installs on two circle rollers 21 and through the drive of circle roller 21 and conveying, and several guide rolls 22 set up between two circle rollers 21, circle roller 21 is parallel to each other with guide roll 22.
Further, the automatic compounding device 3 is arranged above the fiber mat 4, the injection mechanism 32 of the automatic compounding device 3 includes one or more nozzles 33, the nozzles 33 are directed downward at the surface of the fiber mat 4, the two guide rollers 22 are provided and have the same height, and the two guide rollers 22 are respectively arranged on two sides below the nozzles 33 and enable the fiber mat 4 to horizontally pass below the nozzles 33.
Further, the liquid surface sprayed by the spray head 33 is fan-shaped, and the fan-shaped spraying angle is 10-80 degrees; the injection pressure is 0.1-0.6 MPa; the distance between the spray nozzle 33 and the surface of the fiber felt 4 is 10-100 mm.
Further, the automatic glue supply system 31 comprises a liquid storage tank and a flow pump, and the winding speed and the flow pump of the automatic winding and unwinding transmission device 2 are controlled by a controller 5 to operate.
The composite molding device also comprises a drying device.
Example 2
A controllable fiber and sol automatic injection composite forming device comprises a sol preparation device 1, an automatic winding and unwinding transmission device 2 and an automatic composite device 3, wherein the sol preparation device 1 is used for preparing and storing silica sol, the automatic winding and unwinding transmission device 2 is used for installing and conveying a fibrofelt 4, the automatic composite device 3 comprises an automatic glue supply system 31 and an injection mechanism 32, the automatic glue supply system 31 is respectively connected with the sol preparation device 1 and the injection device, a spray head 33 is arranged on the injection mechanism 32, the fibrofelt 4 on the automatic winding and unwinding transmission device 2 penetrates through the injection mechanism 32, the spray head 33 of the injection mechanism 32 is arranged on one side or two sides of the fibrofelt 4, and the silica sol in the sol preparation device 1 is injected on the fibrofelt 4 from the spray head 33 under the driving of the automatic glue supply system 31.
Further, automatic receive and release roll transmission device 2 includes two circle rollers 21 and several guide rolls 22, fibrofelt 4 installs on two circle rollers 21 and through the drive of circle roller 21 and conveying, and several guide rolls 22 set up between two circle rollers 21, circle roller 21 is parallel to each other with guide roll 22.
Further, the injection mechanism 32 comprises two vertical hollow plates 34 and a plurality of spray heads 33, the tops of the hollow plates 34 are communicated with the automatic glue supply system 31, the plurality of spray heads 33 are horizontally connected to the inner side surfaces of the two hollow plates 34, a horizontal strip-shaped hole 35 is formed in the single-side hollow plate 34, the width of the strip-shaped hole 35 is larger than that of the fiber felt 4, and the fiber felt 4 vertically penetrates through the gap between the spray heads 33 of the two hollow plates 34 upwards and then horizontally penetrates out of the injection mechanism 32 from the strip-shaped hole 35.
Further, the spray heads 33 are connected to the middle and the lower part of the hollow board 34, the height of the strip-shaped holes is greater than that of the spray heads 33, and the shape and the direction of the fiber mat 4 in the injection mechanism 32 are adjusted by a plurality of guide rollers 22.
Further, the liquid surface sprayed by the spray head 33 is fan-shaped, and the fan-shaped spraying angle is 10-80 degrees; the injection pressure is 0.1-0.6 MPa; the distance between the spray nozzle 33 and the surface of the fiber felt 4 is 10-100 mm.
Further, the automatic glue supply system 31 comprises a liquid storage tank and a flow pump, and the winding speed and the flow pump of the automatic winding and unwinding transmission device 2 are controlled by a controller 5 to operate.
Example 3
Mixing ethyl orthosilicate, ethanol and water according to the ratio of 1: 12: 0.5, adding 35ml of hydrochloric acid catalyst into the mixture for 500kg in total, stirring the mixture in a sol preparation device 1 for 8 hours, and then adding 140g of ammonia water to prepare silica sol; taking an alkali-free fiber needled felt as a reinforcing fiber, wherein the breadth is 500mm, and the thickness is 20 mm; the silica sol is controllably and automatically sprayed and injected into the pores of the fiber felt 4 by an automatic compounding device 3; the specific process parameters are as follows: the winding speed is 1 m/min; the glue control amount is 85%; double-sided injection; the number of the nozzles 33 is 4 symmetrical nozzles 33; the liquid level sprayed by the spray head 33 is fan-shaped, and the fan-shaped spraying angle is 25 degrees; the injection pressure is 0.4 MPa; the distance between the spray nozzle 33 and the surface of the fiber felt 4 is 30 mm; the running speed of the spray head 33 is 10.3 m/min; the prepared fiber/silica sol composite material is kept for a period of time and then is gelled; and then placing the mixture in an ethanol supercritical drying device for drying to obtain the fiber/silicon dioxide aerogel heat insulation material. According to the standard GB/T17911-2006, the density uniformity error of the prepared aerogel heat insulation material is less than +/-5% through sampling tests.
Example 4
Mixing ethyl orthosilicate, methyltriethoxysilane, ethanol, methanol and water according to the ratio of 1: 0.1: 4.5: 1: 0.4, adding 300g of oxalic acid catalyst into 500kg of the total, stirring the mixture in a sol preparation device 1 for 4 hours, and then adding 300g of ammonia water to prepare silica sol; the aluminum silicate fiber needled felt is used as a reinforcing fiber, the breadth is 1300mm, and the thickness is 8 mm; the silica sol is controllably and automatically sprayed and injected into the pores of the fiber felt 4 by an automatic compounding device 3; the specific process parameters are as follows: the winding speed is 3 m/min; the glue control amount is 60 percent; single-sided spraying; the number of the spray heads 33 is 3; the liquid level sprayed by the spray head 33 is fan-shaped, and the fan-shaped spray angle is 60 degrees; the injection pressure is 0.3 MPa; the distance between the spray nozzle 33 and the surface of the fiber felt 4 is 40 mm; the running speed of the spray head 33 is 13.5 m/min; the prepared fiber/silica sol composite material is kept for a period of time and then is gelled; and then placing the mixture in an ethanol supercritical drying device for drying to obtain the fiber/silicon dioxide aerogel heat insulation material. According to the standard GB/T17911-2006, the density uniformity error of the prepared aerogel heat insulation material is less than +/-5% through sampling tests.
Example 5
Mixing ethyl orthosilicate, methyltriethoxysilane, trimethyltrimethoxysilane, isopropanol and water according to the ratio of 1: 0.1: 0.05: 2: 0.5, adding 400ml of acetic acid as a catalyst into 500kg of the mixture, stirring the mixture in a sol preparation device 1 for 6 hours, and adding 400g of ammonia water to react to prepare silica sol; an aluminum silicate fiber needled felt is used as a reinforcing fiber, the breadth is 500mm, and the thickness is 3 mm; the silica sol is controllably and automatically sprayed and injected into the pores of the fiber felt 4 by an automatic compounding device 3; the specific process parameters are as follows: the winding speed is 5 m/min; the glue control amount is 90 percent; single-sided spraying; the number of the spray heads 33 is 5; the liquid level sprayed by the spray head 33 is fan-shaped, and the fan-shaped spraying angle is 70 degrees; the injection pressure is 0.1 MPa; the distance between the spray nozzle 33 and the surface of the fiber felt 4 is 80 mm; the running speed of the spray head 33 is 8 m/min; the prepared fiber/silica sol composite material is kept for a period of time and then is gelled; and then placing the mixture in an ethanol supercritical drying device for drying to obtain the fiber/silicon dioxide aerogel heat insulation material. According to the standard GB/T17911-2006, the density uniformity error of the prepared aerogel heat insulation material is less than +/-5% through sampling tests.
From examples 3 to 5, it can be seen that: adopt the utility model discloses a composite forming equipment, the injecting glue volume that can effective control fibre/silica aerogel thermal insulation material, and the material degree of consistency is good, and the quality is high.
Finally, it should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (8)
1. The controllable fiber and sol automatic injection composite forming device is characterized by comprising a sol preparation device (1), an automatic winding and unwinding transmission device (2) and an automatic composite device (3), wherein the sol preparation device (1) is used for preparing and storing silica sol, the automatic winding and unwinding transmission device (2) is used for installing and transmitting a fiber felt (4), the automatic composite device (3) comprises an automatic glue supply system (31) and an injection mechanism (32), the automatic glue supply system (31) is respectively connected with the sol preparation device (1) and the injection mechanism (32), the injection mechanism (32) is provided with a spray head (33), the fiber felt (4) on the automatic winding and unwinding transmission device (2) penetrates through the injection mechanism (32), the spray head (33) of the injection mechanism (32) is arranged on one side or two sides of the fiber felt (4), and the silica sol in the sol preparation device (1) is injected to the fiber from the spray head (33) under the driving of the automatic glue supply system (31) On the felt (4).
2. A controllable automatic injection composite molding device for fiber and sol according to claim 1, wherein the automatic winding and unwinding transmission device (2) comprises two round rollers (21) and a plurality of guide rollers (22), the fiber felt (4) is installed on the two round rollers (21) and is driven and transmitted by the round rollers (21), the plurality of guide rollers (22) are arranged between the two round rollers (21), and the round rollers (21) and the guide rollers (22) are parallel to each other.
3. A controllable automatic fiber and sol injection composite molding device according to claim 2, wherein the automatic composite device (3) is disposed above the fiber mat (4), the injection mechanism (32) of the automatic composite device (3) comprises one or more nozzles (33), the nozzles (33) are aligned downward with the surface of the fiber mat (4), the two guide rollers (22) are provided at the same height, the two guide rollers (22) are respectively disposed at two sides below the nozzles (33) and enable the fiber mat (4) to horizontally pass below the nozzles (33).
4. The automatic controllable fiber and sol injection composite molding device as claimed in claim 2, wherein the injection mechanism (32) comprises two vertical hollow plates (34) and a plurality of nozzles (33), the tops of the hollow plates (34) are communicated with the automatic glue supply system (31), the plurality of nozzles (33) are horizontally connected to the inner side surfaces of the two hollow plates (34), a horizontal strip-shaped hole (35) is formed in one side of each hollow plate (34), the width of each strip-shaped hole (35) is larger than that of the fiber mat (4), and the fiber mat (4) vertically penetrates through the gap between the nozzles (33) of the two hollow plates (34) upwards and then horizontally penetrates out of the injection mechanism (32) from the strip-shaped hole (35).
5. A controllable automatic injection composite molding device for fiber and sol according to claim 4, wherein the nozzles (33) are connected to the middle and lower parts of the hollow plate (34), the height of the strip-shaped holes (35) is greater than that of the nozzles (33), and the shape and orientation of the fiber mat (4) in the injection mechanism (32) are adjusted by a plurality of guide rollers (22).
6. The controllable automatic fiber and sol injection composite molding device as claimed in claim 1, wherein the liquid surface sprayed by the spray head (33) is fan-shaped, and the fan-shaped spray angle is 10-80 °; the injection pressure is 0.1-0.6 MPa; the distance between the spray head (33) and the surface of the fibrofelt (4) is 10-100 mm.
7. The automatic controllable fiber and sol injection composite molding device as claimed in claim 1, wherein said automatic glue supply system (31) comprises a liquid storage tank and a flow pump, and the winding speed and the flow pump of said automatic winding and unwinding transmission device (2) are controlled by a controller (5).
8. A controllable automatic fiber and sol injection composite molding apparatus as claimed in claim 1, further comprising a drying device (6).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115893974A (en) * | 2021-08-20 | 2023-04-04 | 巩义市泛锐熠辉复合材料有限公司 | Apparatus and method for preparing aerogel felt |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115893974A (en) * | 2021-08-20 | 2023-04-04 | 巩义市泛锐熠辉复合材料有限公司 | Apparatus and method for preparing aerogel felt |
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