Production system of heat insulation fiber felt
By designing the production system of thermal insulation fiber felt, using air-laid and powder spraying technology, the production process is simplified, the existing aerogel thermal insulation material production methods and high equipment requirements are solved, and low-cost and efficient thermal insulation material production is achieved.
Patent Information
- Application Number
- CN202421600424.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-08
- Publication Date
- 2025-04-18
- Estimated Expiration
- 2034-07-08
AI Technical Summary
The production methods of existing aerogel insulation materials are complex and have high equipment requirements, resulting in high production costs.
A production system for insulating fiber felt was designed, including loosening machines, solid-phase fluidization equipment, dust cage air-flow machine, grid laying machine and high-speed mixer. Through air-flow machine and powder spraying processes, the production process is simplified and equipment requirements are reduced.
The uniform dispersion of fibers and uniform distribution of aerogel powder are achieved, which reduces production costs, is simple in equipment, small in investment, and ensures good thermal insulation performance.
Smart Images
Figure CN222771081U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of thermal insulation materials, and in particular relates to a production system of thermal insulation fiber felt. Background Art
[0002] Aerogel is the lightest solid material known in the world. It has a wide range of applications in aerospace, national defense, green building, energy, environmental management, solar thermal utilization, etc. due to its extremely low thermal conductivity, durability, high temperature resistance, explosion-proof and other characteristics. The existing production method of aerogel insulation materials generally adopts the method of first preparing silica aerogel glue and then immersing the substrate in it. This method has a relatively complicated production process and high requirements for production equipment. Utility Model Content
[0003] In order to solve the above technical problems, the utility model provides a production system of thermal insulation fiber felt, which has simple equipment and small investment.
[0004] In order to achieve the purpose of the utility model, the technical solution adopted by the utility model is:
[0005] A production system for thermal insulation fiber felt comprises an opener, a solid phase fluidization device, a dust cage type air-laid web-forming machine, a web-laying machine and a high-speed mixer, wherein the opener is connected to the solid phase fluidization device via a pipeline, the discharge port of the solid phase fluidization device is connected to a fiber nozzle group, the dust cage type air-laid web-laying machine is connected to the web-laying machine via a conveying curtain; the fiber nozzle group is arranged above the dust cage, a stripping roller is arranged on the discharge side of the dust cage, the stripping roller is located at the feed end of the conveying curtain, a powder nozzle group is arranged above the conveying curtain, the powder nozzle group is connected to the high-speed mixer via a pipeline, and a shaping roller is arranged on the output curtain of the web-laying machine.
[0006] The dust cage described in the utility model is a mesh cage.
[0007] The solid phase fluidization equipment of the utility model is a fluidized bed or a fluidized tank.
[0008] The conveying curtain of the utility model comprises an upper conveying curtain and a lower conveying curtain, the upper conveying curtain comprises a horizontal curtain and an inclined curtain, the discharge port of the inclined curtain faces the lower conveying curtain, and a pressure roller is arranged on the lower conveying curtain close to the discharge port; the powder nozzle group is arranged above the upper conveying curtain and / or the lower conveying curtain.
[0009] The nozzle of the fiber nozzle of the utility model is in the shape of an elongated strip, with a width of 0.5-2mm and a length of 50-80mm. The aperture of the powder nozzle is 1-3mm, which is adapted to the shapes of the monofilament fiber and the nanometer powder.
[0010] The production system of the utility model further comprises an air compressor, and the feed inlets of the solid phase fluidization equipment, the fiber nozzle group and the powder nozzle group are respectively connected to the air compressor through an air supply pipeline.
[0011] The feeding pipelines connected to the discharge ports of the opener and the high-speed mixer of the utility model are both provided with blowers to provide wind force for feeding.
[0012] The beneficial effects of the utility model are:
[0013] 1. The utility model first breaks up the large fiber clusters through the opening machine to form small and uniform fiber bundles, and then completely disperses them into single filaments through the airflow of the solid phase fluidization equipment. The airflow blows away without mechanical friction and force, the fibers will not be damaged, and the performance is maintained well. Then, the airflow forms a web, which fully ensures that the fiber performance is not reduced, so that the performance of the final product is better.
[0014] 2. By setting a powder spray head group above the conveyor curtain, the aerogel nano powder is evenly sprayed on the surface of the fiber mesh, and then the multi-layer superposition and pressing are performed by the web laying machine. The powder is evenly distributed in the final molded product and the material performance is stable. The single-layer fiber mesh is sprayed with aerogel powder, and the supercritical drying device of the traditional process is not required. The equipment is simple and the investment is small.
[0015] 3. Set up upper and lower conveying curtains. The fiber web obtained from the dust cage after one peeling is too thick and difficult to peel completely. Use upper and lower peeling rollers for secondary peeling and then convey it through the upper and lower conveying curtains respectively. The two peelings make the fiber web more uniform and the peeling more complete. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the production system of the thermal insulation fiber felt of the utility model.
[0017] Figure 2 Schematic diagram of the production system of the thermal insulation fiber felt of Example 4.
[0018] Figure 3 This is a schematic diagram of the structure of the upper and lower conveying curtains of Example 2.
[0019] Figure 4 It is a structural schematic diagram of the fiber nozzle group of the utility model.
[0020] Figure numerals: 1. opener; 2. solid phase fluidization equipment; 3. dust cage type airflow web forming machine; 4. web laying machine; 5. conveying curtain; 6. fiber nozzle group; 7. powder nozzle group; 8. high-speed mixer; 9. peeling roller; 10. shaping roller; 11. feeding pipe; 12. output curtain; 13. air blower; 14. air supply pipe; 15. air compressor; 16. pressure roller; 17. transmission roller; 31. dust cage; 51. upper conveying curtain; 52. lower conveying curtain; 511. horizontal curtain; 512. inclined curtain; 61. nozzle. DETAILED DESCRIPTION
[0021] In order to explain the purpose and technical solution of the utility model more clearly and in detail, the utility model is further described below through relevant embodiments. The following embodiments are only for specific explanation of the implementation method of the utility model, and do not limit the protection scope of the utility model.
[0022] Example 1
[0023] like Figure 1 As shown, a production system of an insulating fiber felt includes an opener 1, a fluidized bed, a dust cage type air-laid web-forming machine 3, a web-laying machine 4 and a high-speed mixer 8, wherein the opener 1 is connected to a solid phase fluidization device 2 through a pipeline, the discharge port of the solid phase fluidization device 2 is connected to a fiber nozzle group 6, and the dust cage type air-laid web-laying machine 3 is connected to the web-laying machine 4 through a conveying curtain; the fiber nozzle group 6 is arranged above the dust cage 31, and a stripping roller 9 is arranged on the discharge side of the dust cage 31, and the stripping roller 9 is located at the feed end of the conveying curtain 5, and a powder nozzle group 7 is arranged above the conveying curtain 5, and the powder nozzle group 7 is connected to the high-speed mixer 8 through a pipeline, and a shaping roller 10 is arranged on the output curtain 12 of the web-laying machine 4.
[0024] The fibers are first broken up into large fiber clusters by an opener 1 to form small and uniform fiber bundles, and then the small fiber bundles are blown apart by the airflow of the solid phase fluidization device 2 to form monofilament fibers. The monofilament fibers are evenly spread on the dust cage 31 of the airflow laminating machine through a fiber nozzle 6 to form a fiber web. The fiber web peeled off from the dust cage 31 enters the conveying curtain 5, and the powder nozzle group 7 above the conveying curtain 5 evenly sprays the aerogel composite powder onto the single-layer fiber web, which is then sent to the laminating machine 4 for layer-by-layer laying. After being laid to a specified thickness, it is pressed into a felt by the pressing roller 10 on the output curtain 12.
[0025] Example 2
[0026] This embodiment is based on embodiment 1:
[0027] like Figure 3 As shown, the dust cage 31 is a mesh cage, which helps to separate the fibers and the gas, and at the same time can ensure that the airflow inside the dust cage is uniform, so that the fibers are evenly webbed.
[0028] The conveying curtain 5 includes an upper conveying curtain 51 and a lower conveying curtain 52, the upper conveying curtain 51 includes a horizontal curtain 511 and an inclined curtain 512, the discharge port of the inclined curtain 512 faces the lower conveying curtain 52, and a pressure roller 16 is arranged on the lower conveying curtain 52 close to the discharge port; the powder nozzle group 7 is arranged above the upper conveying curtain 51 and the lower conveying curtain 52.
[0029] The fiber web obtained from the mesh cage after one peeling is too thick and difficult to peel completely. It is peeled twice using two upper and lower peeling rollers and then transported through the upper and lower conveying curtains respectively. The two peelings make the fiber web more uniform and the peeling more complete.
[0030] The nozzle of the fiber nozzle of the utility model is in the shape of an elongated strip, with a width of 0.5 mm and a length of 50 mm, and the aperture of the powder nozzle is 1 mm.
[0031] Example 3
[0032] This embodiment is based on embodiment 1:
[0033] The solid phase fluidization equipment 2 is a fluidization tank.
[0034] like Figure 3 As shown, the conveying curtain 5 includes an upper conveying curtain 51 and a lower conveying curtain 52, the upper conveying curtain 51 includes a horizontal curtain 511 and an inclined curtain 512, the discharge port of the inclined curtain 512 faces the lower conveying curtain 52, and a pressure roller 16 is arranged on the lower conveying curtain 52 near the discharge port; the powder nozzle group 7 is arranged above the upper conveying curtain 51 and the lower conveying curtain 52.
[0035] The nozzle of the fiber nozzle of the utility model is in the shape of an elongated strip, with a width of 1 mm and a length of 60 mm, and the aperture of the powder nozzle is 2 mm.
[0036] Example 4
[0037] This embodiment is based on embodiment 1:
[0038] like Figure 2 As shown, the production system further includes an air compressor 15, and the feed inlets of the solid phase fluidization device 2, the fiber nozzle group 6 and the powder nozzle group 7 are respectively connected to the air compressor 15 through an air supply duct 14. The air compressor is provided to provide pressure for high-speed feeding.
[0039] The feed pipe 11 connected to the discharge ports of the opener 1 and the high-speed mixer 8 is provided with a blower 13 .
[0040] The nozzle of the fiber nozzle of the utility model is in the shape of an elongated strip, with a width of 2mm and a length of 80mm, and the aperture of the powder nozzle is 3mm.
[0041] The structure of the fiber nozzle group of the utility model is shown in Figure 4 , the structure of the powder nozzle group is the same.
[0042] The opener, fluidized bed, fluidized tank, air-laying machine, web-laying machine and high-speed mixer in the utility model are all conventional equipment in the art.
[0043] The connection methods not mentioned in the present invention are conventional connection methods such as welding, threaded connection, riveting, clamping, bonding, etc.
[0044] The above-mentioned embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.
Claims
1. A production system for thermal insulation fiber felt, characterized in that: It includes an opener, a solid-phase fluidization device, a dust cage type air-flow web-forming machine, a web-laying machine and a high-speed mixer. The opener is connected to the solid-phase fluidization device through a pipeline. The discharge port of the solid-phase fluidization device is connected to a fiber nozzle group. The dust cage type air-flow web-laying machine is connected to the web-laying machine through a conveying curtain. The fiber nozzle group is arranged above the dust cage. A stripping roller is arranged on the discharge side of the dust cage. The stripping roller is located at the feed end of the conveying curtain. A powder nozzle group is arranged above the conveying curtain. The powder nozzle group is connected to the high-speed mixer through a pipeline. A shaping roller is arranged on the output curtain of the web-laying machine.
2. The production system of the thermal insulation fiber felt according to claim 1, characterized in that: The dust cage is a mesh cage.
3. The production system of the thermal insulation fiber felt according to claim 1, characterized in that: The solid phase fluidization equipment is a fluidized bed or a fluidized tank.
4. The production system of the thermal insulation fiber felt according to claim 1, characterized in that: The conveying curtain includes an upper conveying curtain and a lower conveying curtain, the upper conveying curtain includes a horizontal curtain and an inclined curtain, the discharge port of the inclined curtain faces the lower conveying curtain, and a pressure roller is arranged on the lower conveying curtain close to the discharge port; the powder nozzle group is arranged above the upper conveying curtain and / or the lower conveying curtain.
5. The production system of thermal insulation fiber felt according to claim 1, characterized in that: It also includes an air compressor, and the feed inlets of the solid phase fluidization equipment, the fiber nozzle group and the powder nozzle group are respectively connected to the air compressor through an air supply pipeline.
6. The production system of the thermal insulation fiber felt according to claim 1, characterized in that: The feeding pipelines connected to the discharge ports of the opener and the high-speed mixer are both provided with blowers.
7. The production system of thermal insulation fiber felt according to claim 1, characterized in that: The nozzle of the fiber nozzle is in the shape of an elongated strip, with a width of 0.5-2 mm and a length of 50-80 mm. The aperture of the powder nozzle is 1-3 mm.