CN211669541U - Production system of nanometer micropore combined material - Google Patents
Production system of nanometer micropore combined material Download PDFInfo
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- CN211669541U CN211669541U CN202020809773.5U CN202020809773U CN211669541U CN 211669541 U CN211669541 U CN 211669541U CN 202020809773 U CN202020809773 U CN 202020809773U CN 211669541 U CN211669541 U CN 211669541U
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Abstract
The utility model provides a nanometer micropore combined material's production system, including airtight room, fluidizer, powder recovery unit, powder jar, the powder injection device of cavity needle in the area and the transport mechanism of fibrofelt, transport mechanism passes airtight room, powder injection device set up in the airtight room, the fluidizer is provided with air intlet and powder import, the fluid outlet of fluidizer connects pipeline, pipeline from the outside penetrate airtight room with powder injection device's feed inlet links to each other, the air exit of airtight room passes through the pipe connection powder recovery unit. The production system has the advantages of low product equipment investment, no use of solvent and supercritical process.
Description
Technical Field
The utility model belongs to the technical field of insulation material, concretely relates to nanometer micropore combined material's production system.
Background
The aerogel and the products thereof are rapidly developed in recent years, the silica aerogel is produced on a large scale and popularized, the market scale of the aerogel and the products thereof in the world is 30-40 hundred million dollars at present, and 50-60 million dollars are expected to be reached by 2020. Although the development is rapid, the popularization is difficult due to the high price, and the share of the total market scale in the market of the heat insulation energy-saving material is small.
In addition, the current production system of aerogel composite felt mainly comes from American ASPEN, adopts a sol-gel method, firstly dissolves silicon dioxide in a solvent, immerses the silicon dioxide in an alkali-free glass fiber felt or other high-performance fiber felts in a fluid mode, then gels in the fiber felts, and then replaces the solvent through the solvent after the gelation is finished, and then carries out supercritical drying, solvent removal and solvent replacement by air to obtain the aerogel composite felt. The process uses a large amount of solvent, and is not environment-friendly; on the other hand, in the process of producing the composite felt, the volume of various fiber felts is large, and the fiber felts are immersed in a large amount of solvent and subjected to supercritical drying, which is very unfavorable for cost control.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a nanometer micropore combined material's production system, this production system mix air and powder material in the fluidization equipment, make powder material fluidization, through powder injection device with the fluid injection fibrofelt in, do not need liquid solvent, the combined material who makes is a nanometer micropore type combined material, the coefficient of thermal conductivity is low, is very close the thermal insulation performance of the compound felt of aerogel.
In order to realize the purpose of the utility model, the utility model adopts the following technical scheme:
a production system of aerogel nanometer microporous composite material, which comprises a closed room, a fluidization device, a powder recovery device, a powder tank, a powder injection device with a hollow needle and a conveying mechanism of fibrofelt, the conveying mechanism penetrates through the closed room, the powder injection device is arranged in the closed room, the fluidizing device is provided with an air inlet and a powder inlet, a fluid outlet of the fluidizing device is connected with a conveying pipeline, the conveying pipeline penetrates into the closed room from the outside and is connected with the feed inlet of the powder injection device, the air outlet of the closed room is connected with the powder recovery device through a pipeline, the powder outlet of the powder recovery device is connected with the powder tank, the powder tank is connected with the powder inlet of the fluidization device, the powder tank is also provided with a powder replenishing port, and the conveying mechanism is provided with a pressure roller.
The utility model mixes and stirs the nanometer powder material and the air in the fluidization equipment to form the even fluid; under the action of airflow, injecting the powder material into the fiber felt through the hollow needle, so that the powder material enters the interior of the fiber felt and fills gaps among fibers; and pressing the fiber felt by a pressure roller to fill the interior of the fiber felt with the powder material to form a compact airtight heat-insulating material.
The injection process of powder is accomplished in airtight room, can collect a large amount of dust that produce in the production process, avoids air pollution can pass through powder recovery unit recycle with powder material simultaneously.
Fluidization device is including a jar body, fan and nozzle, the bottom of the jar body is provided with the nozzle, the top of the jar body is provided with the fluid outlet, the entrance point of nozzle is provided with air inlet and powder import, the exit end of nozzle is internal towards the jar, the outside both sides of the jar body are provided with a fan respectively, the intake pipe is connected to the one end of fan, and the outlet duct is connected to the other end of fan, jar body top both sides are provided with the gas outlet of connecting corresponding outlet duct respectively, jar body bottom both sides are provided with the air inlet of connecting corresponding intake pipe respectively.
Preferably, the air inlet of the fluidizing apparatus is connected to an air storage tank by an air compressor.
Powder injection device includes elevating system, fluid tank and first well hollow needle, the top is connected to the fluid tank elevating system, the fluid tank is provided with the connection pipeline's feed inlet, pipeline is the hose, the bottom surface equipartition of fluid tank has a plurality of pinholes, and each pinhole all connects one first well hollow needle, first well hollow needle is towards the fibrofelt.
Preferably, a pinhole plate is arranged right below the fluid box, and pinholes corresponding to the first hollow needles are arranged on the pinhole plate.
The utility model discloses another optional technical scheme is equipped with powder injection device respectively side by side in fibrofelt's top and below, powder injection device is including blockking a section of thick bamboo, fixed bolster and setting up the licker-in on transport mechanism, the licker-in corresponds the fibrofelt setting, the licker-in is one end open-ended hollow structure, the surface equipartition of licker-in has a plurality of pinholes, and each pinhole all connects a second hollow needle, block a section of thick bamboo and set up with the licker-in with the axle center and be located the licker-in, one side of blockking a section of thick bamboo is provided with axial opening, and this opening side is just to fibrofelt and the border of opening side is provided with the sealing strip, the sealing strip is with the inside wall; the blind end that blocks a section of thick bamboo sets up in the blind end of licker-in, the open end that blocks a section of thick bamboo is provided with wears out the inlet pipe of licker-in open end, the lateral wall of inlet pipe with be provided with the sealing washer between the licker-in open end inside wall, the inlet pipe is connected the fixed bolster, the access connection of inlet pipe pipeline.
Preferably, the sealing strip and the sealing ring are polytetrafluoroethylene strips.
Preferably, the fiber mat is provided with a backing sheet on the other side corresponding to the spike roll.
The powder recovery device is a bag-type dust collector.
The beneficial effects of the utility model reside in that:
1. the system is suitable for injecting fluidized nanometer microporous powder and air into a fiber felt through a hollow needle under the action of airflow and filling the fluidized nanometer microporous powder and the air into gaps of materials, and the powder and the fiber felt are adhered together under the action of force after being pressed, so that the air is prevented from flowing in fiber gaps, the heat transfer caused by air convection is avoided, the heat conductivity coefficient of the materials reaches 0.025W/(m.k) and is far lower than that of the traditional various heat-insulating materials, and the heat-insulating materials are equivalent to aerogel composite felts obtained by a supercritical drying method.
2. The system of the utility model can utilize the existing aerogel powder, nano-silica powder, gas phase silica and other nano-powder raw materials which are produced in large scale to fill and seal the gap of the fibrofelt, the investment of product equipment is small, and no solvent or supercritical process is used; the powder injection device is arranged in the closed room, the powder material in the closed room is recovered through the powder recovery device, and the recovered powder material is conveyed to the fluidization device, so that the cyclic utilization is realized.
3. A nozzle is arranged at a feed inlet of the fluidization device, fluid is sprayed into the tank body at a high speed through the nozzle, negative pressure is formed around the nozzle, and powder materials are directly sucked into the tank body from a powder inlet; meanwhile, the tank body is internally provided with a certain pressure, and the fluid can automatically enter the conveying pipeline from the fluid outlet at the top of the tank body under the action of the pressure, so that a pressure pump is not needed, and the energy is saved.
4. The outer two sides of the fluidization device are respectively provided with a fan, the inner part of the tank body is from bottom to top, the outer part of the tank body forms airflow circulation from top to bottom, so that light powder in the tank body cannot be settled, and the powder and air can be fully mixed uniformly.
Drawings
FIG. 1 is a schematic diagram of the construction of the nanoporous composite production system of examples 4 and 5.
FIG. 2 is a schematic diagram of the structure of the nanoporous composite production system of examples 6-8.
FIG. 3 is a schematic view of the structure of a fluidizing apparatus.
Fig. 4 is a schematic structural view of the powder injection device of examples 6 to 8.
Fig. 5 is a schematic sectional view of the powder injection device according to embodiments 6 to 8.
Detailed Description
In order to illustrate the technical solution of the present invention more clearly and in detail, the present invention is further described below by referring to the following embodiments. The following examples are only for the purpose of specifically illustrating the method of implementing the present invention, and do not limit the scope of the present invention.
Example 1
As shown in fig. 1 and 2, a system for producing aerogel nano-microporous composite material comprises a closed room 8, a fluidizing device 2, a powder recovering device 3, a powder tank 4, a powder injecting device 5 with hollow needles and a conveying mechanism 6 of fibrofelt, wherein the conveying mechanism 6 penetrates through the closed room 8, the powder injecting device 5 is arranged in the closed room 8, the fluidizing device 2 is provided with an air inlet 21 and a powder inlet 22, a fluid outlet of the fluidizing device 2 is connected with a conveying pipeline 9, the conveying pipeline 9 penetrates into the closed room 8 from the outside and is connected with a feed inlet of the powder injecting device 5, an air outlet of the closed room 8 is connected with the powder recovering device 3 through a pipeline, a powder outlet of the powder recovering device 3 is connected with the powder tank 4, the powder tank 4 is connected with a powder inlet of the fluidizing device 2, the powder tank 4 is also provided with a powder replenishing port 41, and the conveying mechanism 6 is provided with a pressure roller 7.
The superfine powder material and air are fully mixed and stirred in the fluidizing device 2 to form uniform fluid; the fiber felt 1 reaches the position of the fluidization device 2 under the transmission of the transmission mechanism 6, under the action of air flow, superfine powder is injected into the fiber felt 1 through the hollow needle of the powder injection device 5, so that powder materials enter the interior of the fiber felt 1 and gaps among fibers are filled; the fiber mat is pressed by a pressure roll 7 so that the interior of the fiber mat is filled with the powder material to form a dense air-impermeable heat insulating material. In the whole process, the powder material in the environment is discharged along with the air flow from the air outlet of the closed room through the exhaust fan, is recovered through the powder recovery device 3, is conveyed to the fluidization device 2, and is recycled through the powder tank 4. The powder tank 4 is also provided with a powder replenishment port 41 for replenishing the powder material.
The conveying mechanism may be a conventional conveying device such as a conveyor belt.
Example 2
This example is based on example 1:
as shown in fig. 3, the fluidizing device 2 includes a tank 27, a blower 24 and a nozzle 23, the nozzle 23 is disposed at the bottom of the tank 27, a fluid outlet is disposed at the top of the tank 27, the air inlet 21 and the powder inlet 22 are disposed at the inlet end of the nozzle 23, the outlet end of the nozzle 23 faces the tank 27, the blower 24 is disposed at each of two sides of the outside of the tank 27, one end of the blower 24 is connected to an air inlet pipe 25, the other end of the blower 24 is connected to an air outlet pipe 26, two sides of the top of the tank 27 are respectively provided with an air outlet connected to the corresponding air outlet pipe 26, and two sides of the bottom of the tank 27 are respectively provided with.
A nozzle 23 is arranged at a feed inlet of the fluidization device 2, fluid is sprayed into the tank body 27 at a high speed through the nozzle 23, negative pressure is formed around the nozzle, and powder materials are directly sucked into the tank body 27 from the powder inlet 22; at the same time, the tank 27 has a certain pressure, and the fluid will automatically enter the delivery pipe 9 from the fluid outlet at the top of the tank 27 under the pressure.
The two sides of the outer part of the tank body 27 are respectively provided with the fan 24, the inner part of the tank body 27 is from bottom to top, and the outer part of the tank body 27 forms airflow circulation from top to bottom, so that the light powder in the tank body 27 circulates inside and outside the tank body along with the airflow, does not settle, is more beneficial to the full and uniform mixing of the powder and air, and ensures the full fluidization of the powder and the air.
The utility model discloses a fan be conventional roots's fan.
Example 3
This example is based on example 2:
the air inlet 21 of the fluidising arrangement 2 is connected to an air storage tank 12 via an air compressor 11. The air is directly pressurized by the air compressor, and the pressurized air is directly sprayed into the tank body 27 from the nozzle 23 at a high speed, so that a certain pressure is provided in the tank body 27. The automatic powder suction and the powder conveying to the powder injection device can be realized by adjusting the pressure of the air compressor, the flow velocity of the fluid is controlled, a pressure pump is not needed, and the energy is saved.
The utility model discloses an air compressor machine be Sichuan Jiemeisi mechanical equipment limited's air compressor machine.
Example 4
This example is based on example 1:
as shown in fig. 1, the powder injection device 5 includes an elevating system 10, a fluid tank 51 and a first hollow needle 42, the fluid tank 51 is connected to the upper side of the elevating system 10, the fluid tank 51 is provided with a feed inlet for connecting the conveying pipeline 9, the conveying pipeline 9 is a hose, a plurality of pinholes are uniformly distributed on the bottom surface of the fluid tank 51, each pinhole is connected to one first hollow needle 42, and the first hollow needle 42 faces the fiber mat 1.
The fiber felt 1 reaches the position of the fluidization device 2 under the transmission of the transmission mechanism 6, the lifting mechanism 10 descends to enable the first hollow needle 42 to penetrate into the fiber felt 1, and the superfine powder is injected into the fiber felt 1 through the first hollow needle 42 to enable the powder material to enter the interior of the fiber felt 1; the lifting mechanism 10 is lifted, the first hollow needle 42 leaves the fiber felt 1, the fiber felt 1 is conveyed forwards continuously, and the lifting is repeated in this way, so that the injection process of the powder material in the fiber felt 1 is completed. The transport mechanism may be provided with a plurality of powder injection devices 5.
The lifting mechanism can be in a conventional push-pull driving mode such as an air cylinder.
Powder recovery unit 3 is the sack cleaner, and conventional powder recovery unit all is applicable to the utility model discloses. The utility model discloses a bag-type dust collector of Hebei Sheng Fei environmental protection equipment limited company.
Example 5
This example is based on example 4:
a needle hole plate 53 is arranged right below the fluid tank 51, and needle holes corresponding to the first hollow needles 42 are arranged on the needle hole plate 53. When the first hollow needles 42 penetrate the fiber mat, the first hollow needles are inserted into needle holes of the needle hole plate 53, so that the first hollow needles are not damaged, and meanwhile, the needle hole plate 53 below the fiber mat 1 also plays a role in stress.
Example 6
This example is based on example 1:
as shown in fig. 2-5, powder injection devices 5 are respectively arranged above and below the fiber mat 1 side by side, each powder injection device 5 includes a blocking cylinder 56, a fixing support 57 and a licker-in 54 arranged on the conveying mechanism 6, the licker-in 54 is arranged corresponding to the fiber mat 1, the licker-in 54 is of a hollow structure with an open end, a plurality of pinholes are uniformly distributed on the outer surface of the licker-in 54, each pinhole is connected with a second hollow needle 55, the blocking cylinder 56 and the licker-in 54 are coaxially arranged and are located in the licker-in 54, an axial opening is arranged on one side of the blocking cylinder 56, the opening side faces the fiber mat 1, sealing strips 59 are arranged around the edge of the opening side, and the sealing strips 59 are abutted to the inner side wall of the licker-in 54; the closed end of the blocking cylinder 56 is arranged at the closed end of the licker-in 54, the open end of the blocking cylinder 56 is provided with a feed pipe 561 which penetrates out of the open end of the licker-in 54, a sealing ring 58 is arranged between the outer side wall of the feed pipe 561 and the inner side wall of the open end of the licker-in 54, the feed pipe 561 is connected with the fixed support 57, and the inlet of the feed pipe 561 is connected with the conveying pipeline 9.
The licker-in 54 is rolled above the fiber felt 1, the blocking cylinder 56 is fixedly arranged above the fiber felt 1 through the fixing support 57, the opening side of the blocking cylinder 56 is opposite to the fiber felt 1, the conveying pipeline 9 is connected with a feeding pipe 561 of the blocking cylinder 56, fluid is fed into the blocking cylinder 56, and powder materials are penetrated into the fiber felt 1 through the second hollow needle 55 on the opening side so as to enter the fiber felt 1; when the second hollow needle 55 leaves the fiber mat 1, i.e., leaves the open side of the blocking cylinder 56, the powder material is blocked by the blocking cylinder 56 and does not go out of the powder.
The sealing strips 59 are arranged on the periphery of the edge of the opening side and abut against the inner side wall of the licker-in 54, so that powder materials can be prevented from entering a gap between the licker-in 54 and the blocking cylinder 56, and the second hollow needle 55 is prevented from leaking powder after leaving the fiber felt; a sealing ring 58 is arranged between the outer side wall of the discharge pipe 561 of the blocking cylinder 56 and the inner side wall of the opening end of the licker-in roll 54, and also plays a role in preventing powder materials from entering a gap between the licker-in roll 54 and the blocking cylinder 56.
Example 7
This example is based on example 6:
the sealing strip 59 and the sealing ring 58 are made of teflon. The PTFE strips are soft, which is beneficial to sealing, and meanwhile, the friction is small, which is convenient for dynamic sealing.
Example 8
This example is based on example 6:
the fiber mat 1 is provided with a back sheet 61 on the other side corresponding to the taker-in roll 54. The pressure is applied when the lickerin roll 54 is rolled.
The utility model discloses the connected mode that does not mention is conventional connected modes such as welding, screw thread, riveting and screw.
The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (9)
1. A production system of nano microporous composite material is characterized by comprising a closed room, a fluidization device, a powder recovery device, a powder tank, a powder injection device with a hollow needle and a conveying mechanism of fibrofelt, the conveying mechanism penetrates through the closed room, the powder injection device is arranged in the closed room, the fluidizing device is provided with an air inlet and a powder inlet, a fluid outlet of the fluidizing device is connected with a conveying pipeline, the conveying pipeline penetrates into the closed room from the outside and is connected with the feed inlet of the powder injection device, the air outlet of the closed room is connected with the powder recovery device through a pipeline, the powder outlet of the powder recovery device is connected with the powder tank, the powder tank is connected with the powder inlet of the fluidization device, the powder tank is also provided with a powder replenishing port, and the conveying mechanism is provided with a pressure roller.
2. The system for producing nano-microporous composite material according to claim 1, wherein the fluidizing device comprises a tank, a blower and a nozzle, the nozzle is arranged at the bottom of the tank, the fluid outlet is arranged at the top of the tank, the air inlet and the powder inlet are arranged at the inlet end of the nozzle, the outlet end of the nozzle faces the inside of the tank, the blower is arranged at each of two sides of the outside of the tank, one end of the blower is connected with the air inlet pipe, the other end of the blower is connected with the air outlet pipe, the two sides of the top of the tank are respectively provided with an air outlet connected with the corresponding air outlet pipe, and the air inlet connected with the corresponding air inlet pipe is.
3. The nanoporous composite material production system according to claim 1, wherein the air inlet of the fluidization device is connected to an air storage tank via an air compressor.
4. The nanoporous composite material production system according to claim 1, wherein the powder injection device comprises a lifting mechanism, a fluid box and a first hollow needle, the fluid box is connected with the lifting mechanism, the fluid box is provided with a feed inlet for connecting the conveying pipeline, the conveying pipeline is a hose, a plurality of pinholes are uniformly distributed on the bottom surface of the fluid box, each pinhole is connected with one first hollow needle, and the first hollow needles face the fiber felt.
5. The nanoporous composite material production system according to claim 4, wherein a pinhole plate is arranged right below the fluid box, and the pinhole plate is provided with pinholes corresponding to the first hollow needles.
6. The system for producing the nano-microporous composite material according to claim 1, wherein powder injection devices are respectively arranged above and below a fiber felt side by side, each powder injection device comprises a blocking cylinder, a fixed support and a licker-in arranged on a conveying mechanism, the licker-in is arranged corresponding to the fiber felt, the licker-in is of a hollow structure with an opening at one end, a plurality of pinholes are uniformly distributed on the outer surface of the licker-in, each pinhole is connected with a second hollow needle, the blocking cylinder and the licker-in are coaxially arranged and are positioned in the licker-in, one side of the blocking cylinder is provided with an axial opening, the opening side is opposite to the fiber felt, the edge of the opening side is provided with a sealing strip, and the sealing strip is abutted against the inner side wall of the licker; the blind end that blocks a section of thick bamboo sets up in the blind end of licker-in, the open end that blocks a section of thick bamboo is provided with wears out the inlet pipe of licker-in open end, the lateral wall of inlet pipe with be provided with the sealing washer between the licker-in open end inside wall, the inlet pipe is connected the fixed bolster, the access connection of inlet pipe pipeline.
7. The nanoporous composite material production system according to claim 6, wherein the sealing strip and the sealing ring are polytetrafluoroethylene strips.
8. The nanoporous composite material production system according to claim 7, wherein the fiber mat is provided with a backing plate on the other side corresponding to the lickerin roll.
9. The system for producing a nanoporous composite material according to claim 1, wherein the powder recovery device is a bag-type dust collector.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111487944A (en) * | 2020-05-15 | 2020-08-04 | 成都硕屋科技有限公司 | Production system and method of nano microporous composite material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111487944A (en) * | 2020-05-15 | 2020-08-04 | 成都硕屋科技有限公司 | Production system and method of nano microporous composite material |
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