CN116425411B

CN116425411B - Microfiber glass wool blowing molding device

Info

Publication number: CN116425411B
Application number: CN202310367471.5A
Authority: CN
Inventors: 张卫平
Original assignee: Shanxi Huakang Green Building Materials Co ltd
Current assignee: Shanxi Huakang Green Building Materials Co ltd
Priority date: 2023-04-07
Filing date: 2023-04-07
Publication date: 2024-11-08
Anticipated expiration: 2043-04-07
Also published as: CN116425411A

Abstract

The invention discloses a microfiber glass wool blowing molding device, which belongs to the technical field of thermal insulation fiber material production equipment; it comprises a cavity; a raw material melting zone, a melt homogenizing zone, a melt blowing zone and a melt molding zone are arranged in the cavity; the raw material melting zone is connected with the melt homogenizing zone; a feeding port is arranged at the top of the raw material melting zone; a first-level bottom burning gun is connected to the bottom of the raw material melting zone; a second-level bottom burning gun is connected to the bottom of the melt homogenizing zone; the melt homogenizing zone is connected with the melt blowing zone through a melt outlet; a plurality of blowing holes are arranged at the bottom of the melt blowing zone; the blowing holes are connected with an auxiliary gas channel and a gas channel; the top of the melt blowing zone is connected with the melt molding zone; a fiber filament outlet is arranged in the melt molding zone; the depth of the melt blowing zone is 5-150mm; the device realizes the one-time completion of raw material melting, homogenizing, blowing and molding, and does not need to pass through a wire state, thereby reducing the problem of wire doubling generated during wire drawing and wire arrangement.

Description

Microfiber glass wool jetting forming device

Technical Field

The invention belongs to the technical field of heat-insulating fiber material production equipment, and particularly relates to a microfiber glass wool injection molding device.

Background

The core process of the microfiber glass wool industry is that primary wires with the diameter of 0.2-0.5mm are formed by a wire drawing bushing after a crucible furnace is melted by an injector, and microfiber glass wool with the diameter of 0.2-3.5um is formed under the action of high-temperature high-speed hot air flow. The existing blowers are all blowers with a combustion chamber structure, and the working principle is as follows: the gas and air (or oxygen-enriched air) enter the burner combustion chamber of the burner according to a certain pressure and a certain proportion, high-temperature flue gas generated by complete combustion in the burner combustion chamber is sprayed out at a high speed with the narrow slit length of 300-400mm and the wide slit width of 4-15mm at the tail end of the combustion chamber to form high-temperature high-speed belt-type hot air flow, and primary filaments with the diameter of 0.2-0.5mm fed by the conveying device are sprayed into microfiber glass with the diameter of 0.2-3.5 mu m, and the working principle is shown in the figure 1. In fig. 1, the device specifically comprises a raw material bin 21, wherein the bottom of the raw material bin 21 is connected with a raw material melting crucible furnace 22, and a wire drawing bushing 23 is arranged at the bottom of the raw material melting crucible furnace 22; the raw material melting crucible furnace 22 is also connected with a crucible furnace transformer 210 and a bushing transformer 211; the mixer 26 is connected with a blower 27; the blower 27 is connected with a wire drawing power roller 25; the primary filaments 24 blown from the bushing 23 pass through the drawing power roller 25 and form microfibrous glass wool 28 by the hot air flow blown by the blower 27, and finally enter the settling drum 29.

The existing belt injection molding technology has the following defects: 1. before blowing, the molten material is required to be drawn and discharged through a drawing bushing plate, a great deal of labor force is required, and meanwhile, in order to prevent doubling, the material is required to be manually attended. 2. A large amount of heat energy generated by the combustion of the fuel in the combustion chamber is absorbed by the combustion chamber walls, resulting in a large amount of heat energy loss. 3. The temperature of the whole injector is increased after the combustion chamber wall absorbs heat, and the interlayer water jacket must be made to be cooled and protected so as to facilitate personnel operation and environmental temperature, and a large amount of water resource consumption is caused despite the water recycling. 4. The high-temperature high-speed hot air flow combusted by the combustion chamber is sprayed out from the flame spraying port to generate larger Xiao Sheng and about 120 dB, so that the sound wave propagation pollution is caused, and the method is very unfavorable for operators and surrounding environments.

The prior patent CN 113308795A relates to an on-line continuous production system of a glass microfiber heat-insulating plate core material and a continuous production method by using the system, wherein the production system comprises a melting furnace, a fiber forming centrifuge, a cotton collecting machine, a glue spraying system, a shaping system and an on-line cutting device. Specifically, the mixture is sent into a kiln melting tank for melting treatment to prepare glass liquid; glass liquid is sent into a bushing plate and a centrifugal disc through a glass liquid material channel according to the production flow, the glass liquid is centrifugally moved in the centrifugal disc rotating at high speed, and is thrown out through small holes of the centrifugal disc to freely fall, and glass microfibers with uniform diameters are prepared under the traction effect of high-temperature blowing air flow. However, the diameter of the glass microfiber prepared by centrifugation cannot reach the micron level, and the glass microfiber is only suitable for preparing a board core material by hot press molding treatment.

Disclosure of Invention

The invention overcomes the defects of the prior art and provides a microfiber glass wool injection molding device.

In order to achieve the above purpose, the present invention is realized by the following technical scheme.

The microfiber glass wool jetting and forming device comprises a cavity; a raw material melting area, a melt homogenizing area, a melt blowing area and a melt forming area are arranged in the cavity; the raw material melting zone is communicated with the melt homogenizing zone; a feed inlet is arranged at the top of the raw material melting zone; the bottom of the raw material melting zone is connected with a primary bottom burning gun; the bottom of the melt homogenizing zone is connected with a secondary bottom burning gun; the melt homogenizing zone is connected with the melt blowing zone through a melt outlet; the bottom of the melt blowing zone is provided with a plurality of blowing holes; the injection hole is connected with a combustion-supporting gas channel and a fuel gas channel; the top of the melt blowing zone is communicated with the melt forming zone; the melt forming area is provided with a fiber outlet; the depth of the melt blowing zone is 5-150mm.

Further, the melt outlet is connected with a side wall of the melt blowing zone near the bottom.

Further, the caliber of the melt outlet is 3-15mm.

Further, the diameter of the fuel gas channel is 1-10mm, and the diameter of the combustion-supporting gas channel is 1-30mm.

Further, the gas channel and the combustion-supporting gas channel are connected to the premixing channel together; the premixing passage is connected to the blowing holes through a pulse valve.

Further, the diameter of the blowing hole is 2-35mm.

Further, a flue gas outlet is arranged at the top of the melt homogenizing zone.

Further, the outer wall of the cavity is a water-cooled wall outer wall.

Further, the melt outlet is provided in the middle of the side wall of the melt homogenizing zone.

Further, the flow ratio of the fuel gas entering through the fuel gas channel to the auxiliary fuel gas entering through the combustion-supporting gas channel is 1:1-1.5.

Compared with the prior art, the invention has the following beneficial effects:

The invention adopts the mixture of fuel and combustion-supporting substances to provide high-temperature high-speed smoke power, the power smoke is blown from the bottom of the melt, and the power smoke penetrates through the melt from bottom to top. Directly dragging the melt into microfiber glass cotton with the diameter of 0.2-3.5 mu m, and a primary yarn process is not needed. The device is energy-saving and the noise is remarkably reduced. The raw materials are melted, homogenized, blown and molded at one time, and the state of primary yarn is not needed, so that the yarn doubling problem generated in the yarn drawing and yarn discharging process is reduced, and the consumption of energy sources is reduced.

Drawings

Fig. 1 is a schematic structural view of a prior art micro-fiber glass wool injection molding apparatus.

Fig. 2 is a schematic structural view of a microfiber glass wool injection molding device according to the present invention.

Fig. 3 is an enlarged view of a in fig. 2.

In the figure, a 1-charging hole, a 2-water wall outer wall, a 3-raw material melting area, a 4-melt homogenizing area, a 5-primary bottom burning gun, a 6-secondary bottom burning gun, a 7-gas channel, an 8-combustion supporting gas channel, a 9-blowing hole, a 10-melt blowing area, a 11-liquid level line, a 12-melt forming area, a 13-housing, a 14-melt outlet, a 15-fiber filament outlet, a 16-premixing channel and a 17-smoke outlet.

21-Raw material bin, 22-raw material melting crucible furnace, 23-wire drawing bushing, 24-primary wire, 25-wire drawing power roller, 26-mixer, 27-blower, 28-microfiber glass wool and 29-settling cask.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail by combining the embodiments and the drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. The following describes the technical scheme of the present invention in detail with reference to examples and drawings, but the scope of protection is not limited thereto.

Referring to fig. 2, the present embodiment proposes a microfiber glass wool injection molding apparatus comprising a cavity; the outer wall of the cavity is a water-cooled wall outer wall 2. The cavity is internally provided with a raw material melting zone 3, a melt homogenizing zone 4, a melt blowing zone 10 and a melt forming zone 12.

Specifically, the right side of the raw material melting zone 3 is communicated with a melt homogenizing zone 4; the bottom of the melt homogenizing zone 4 is higher than the bottom of the raw material melting zone 3, and the top of the melt homogenizing zone 4 is separated from the top of the raw material melting zone 3 by a water wall. A feed inlet 1 is arranged at the top of the raw material melting zone 3; the bottom of the raw material melting zone 3 is connected with a primary bottom burning gun 5; the top of the melt homogenizing zone 4 is provided with a flue gas outlet 17, and the bottom of the melt homogenizing zone 4 is connected with a secondary bottom burning gun 6; raw materials enter the bottom of a raw material melting zone 3 from a charging hole 1, the raw materials are rolled and melted under the action of high-temperature smoke generated by a primary bottom burning torch 5, the melt of the raw materials gradually rises and flows into a melt homogenizing zone 4, and the melt is further homogenized under the action of high-temperature smoke of a secondary bottom burning torch 6. The flue gas generated in the raw material melting zone 3 and the melt homogenizing zone 4 is discharged through a flue gas discharge port 17.

A melt outlet 14 is arranged in the middle of the side wall of the melt homogenizing zone 4; the aperture of the melt outlet 14 is 5mm; the melt outlet 14 is connected to the side wall of the melt blowing zone 10 near the bottom. The melt homogenized by heating in the melt homogenizing zone 4 gradually rises and diffuses into the melt blowing zone 10; the depth of the melt blowing zone 10 was 95mm. The melt homogenized in the melt homogenizing zone 4 diffuses into the melt blowing zone 10; in fig. 2, the level line 11 is the level of the melt entering the melt blowing zone 10.

A plurality of blowing holes 9 are uniformly distributed at the bottom of the melt blowing zone 10; the injection hole 9 is connected with a premixing passage 16, the premixing passage 16 is connected with a pulse valve (not shown in the figure), and the premixing passage 16 is connected with a combustion-supporting gas passage 8 and a fuel gas passage 7 (see fig. 3); the diameter of the fuel gas channel 7 is 10mm, and the diameter of the combustion-supporting gas channel 8 is 20mm. The diameter of the blowing holes 9 is 2-35mm. The top of the melt blowing zone 10 is communicated with a horizontal melt forming zone 12 through an elbow; the melt forming zone 12 is provided with an outer cover 13; the melt forming zone 12 is provided with a filament outlet 15.

After the fuel gas and the combustion-supporting gas respectively enter the premixing channel 16 and are mixed, the formed mixed gas is sprayed upwards from the spraying holes 9 at the bottom of the melt spraying zone 10 through the pulse valve through the spraying pipe; the fuel and the combustion-supporting substance provide high-temperature high-speed smoke power with the speed of 250-350m/s and the temperature of 1200-1400 ℃. The power smoke penetrates through the melt from bottom to top; the melt is directly drawn into microfiber glass wool by jetting molding power, and a primary silk process is not needed. The microfibrous glass wool is ejected through the filament outlet 15 of the melt forming section 12.

For blowing, it is also possible to use a prior art burner as shown in fig. 1, which is provided with a gas inlet and a combustion gas inlet, which, through a mixer 26, enters a burner 27, several burners 27 being in communication with the bottom of the melt blowing zone 10 for blowing the melt.

The implementation process of the device is as follows: the raw materials are added from a feed inlet 1 and fall into a raw material melting zone 3, the raw materials are rolled and melted under the action of high-temperature smoke generated by a primary bottom burning gun 5, then enter a melt homogenizing zone 4 to further homogenize the melt under the action of high-temperature smoke of a secondary bottom burning gun 6, and the smoke generated by the raw material melting zone 3 and the melt homogenizing zone 4 is discharged through a smoke discharge port 17. The melt homogenized by the melt homogenizing zone 4 flows into the melt blowing zone 10, and the melt forms microfiber glass wool with the diameter of 0.5-3.5um under the traction of high-temperature high-speed sprayed smoke, and the formed microfiber glass wool and the smoke generated by blowing enter a product collecting device zone together to separate products from the smoke.

The device adopts the mixture of fuel and combustion-supporting substances to provide high-temperature high-speed smoke power, the power smoke is blown from the bottom of the melt, and the power smoke penetrates through the melt from bottom to top. Directly dragging the melt into microfiber glass cotton with the diameter of 0.2-3.5 mu m, and a primary yarn process is not needed. The device is energy-saving and the noise is remarkably reduced. The raw materials are melted, homogenized, blown and molded at one time, and the state of primary yarn is not needed, so that the yarn doubling problem generated in the yarn drawing and yarn discharging process is reduced, and the consumption of energy sources is reduced. As the injection molding mode is changed, the noise of the injection procedure is greatly reduced by 25-30 dB. The comprehensive energy consumption is large in energy saving, and the energy saving in the link is about 650Kg of standard coal per ton.

While the invention has been described in detail in connection with specific preferred embodiments thereof, it is not to be construed as limited thereto, but rather as a result of a simple deduction or substitution by a person having ordinary skill in the art to which the invention pertains without departing from the scope of the invention defined by the appended claims.

Claims

1. A microfiber glass wool blowing molding device, characterized in that it comprises a cavity; a raw material melting zone (3), a melt homogenizing zone (4), a melt blowing zone (10), and a melt molding zone (12) are arranged in the cavity; the raw material melting zone (3) is connected to the melt homogenizing zone (4); a feeding port (1) is arranged at the top of the raw material melting zone (3); a first-stage bottom burning gun (5) is connected to the bottom of the raw material melting zone (3); a second-stage bottom burning gun (5) is connected to the bottom of the melt homogenizing zone (4); gun (6); the melt homogenization zone (4) is connected to the melt blowing zone (10) through a melt outlet (14); a plurality of blowing holes (9) are provided at the bottom of the melt blowing zone (10); the blowing holes (9) are connected to a combustion gas channel (8) and a combustion gas channel (7); the top of the melt blowing zone (10) is connected to the melt forming zone (12); the melt forming zone (12) is provided with a fiber filament outlet (15); the depth of the melt blowing zone (10) is 5-150 mm;

The melt outlet (14) is arranged in the middle of the side wall of the melt homogenization zone (4), and the melt outlet (14) is connected to the side wall of the melt blowing zone (10) near the bottom. The diameter of the melt outlet (14) is 3-15 mm.

2. The microfiber glass wool blowing molding device according to claim 1, characterized in that the diameter of the gas channel (7) is 1-10 mm, and the diameter of the combustion-supporting gas channel (8) is 1-30 mm.

3. The microfiber glass wool blowing molding device according to claim 2 is characterized in that the gas channel (7) and the auxiliary gas channel (8) are connected to the premixing channel (16); the premixing channel (16) is connected to the blowing hole (9) through a pulse valve.

4. The microfiber glass wool blowing molding device according to claim 3, characterized in that the diameter of the blowing hole (9) is 2-35 mm.

5. The microfiber glass wool blowing molding device according to claim 1, characterized in that a smoke exhaust port (17) is provided at the top of the melt homogenization zone (4).

6. The microfiber glass wool blowing molding device according to claim 1, characterized in that the outer wall of the cavity is a water-cooled wall outer wall (2).

7. The microfiber glass wool blowing molding device according to claim 1 is characterized in that the flow ratio of the fuel gas entering through the fuel gas channel (7) and the auxiliary fuel gas entering through the auxiliary fuel gas channel (8) is 1:1-1.5.