Cotton lifting device of cotton collecting machine for mineral wool and using method of cotton lifting device

Abstract

The invention discloses a mineral wool collecting machine cotton lifting device and a using method thereof, and belongs to the technical field of mineral wool product manufacturing. The mineral wool collecting machine cotton lifting device comprises a ring pipe support, a plurality of rectangular ring pipes are arranged on the ring pipe support, each rectangular ring pipe comprises a ring pipe outer shell and a ring pipe inner shell, and the upper portions of the ring pipe outer shells and the upper portions of the ring pipe inner shells are connected in a sealed mode; the lower portion of the annular pipe inner shell inclines by a certain angle in the direction away from the annular pipe outer shell and forms an air chamber with the annular pipe outer shell. A first arc-shaped structure bent towards the annular pipe inner shell is arranged at the bottom of the annular pipe outer shell, a second arc-shaped structure bent towards the annular pipe outer shell is arranged at the bottom of the annular pipe inner shell, and the bottom of the first arc-shaped structure and the bottom of the second arc-shaped structure are arranged at a certain interval and matched to form an annular gap. According to the invention, a bladeless gas flow design is adopted, so that the slag balls or overweight crude fibers generated by the centrifugal machine are not influenced to continuously descend and fall into the scraper for separation while upflow is provided to drive a part of mineral wool fibers to return to the adsorption area of the cotton collector, the waste of raw materials is reduced, and the production efficiency is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of mineral wool product manufacturing, and in particular to a mineral wool collector and a use method thereof. Background Art

[0002] In mineral wool production, a cotton collector (also known as a cotton collection chamber or fiber collection equipment) collects the mineral wool fibers ejected from a centrifuge, evenly distributes them, and transports them to the next process. The collection power comes primarily from the air blown from the centrifuge and the negative pressure adsorption generated by the collector's negative pressure chamber. However, current collectors have the following problems with mineral wool fiber adsorption: First, insufficient fiber adsorption will lead to waste of raw materials. The negative pressure field of the cotton collector has a significant "edge attenuation effect", that is, after the vertical distance from the cotton collecting mesh exceeds a certain area, the negative pressure value decays to below the effective adsorption threshold. The initial speed of the centrifuge throwing out the fiber is relatively fast. When some fibers reach the negative pressure area, their kinetic energy has not yet fully decayed, causing them to break through the adsorption boundary. That is, the synergistic effect of the centrifuge blow-off wind and the negative pressure adsorption force of the cotton collector has physical limitations. The thrust from the centrifuge blow-off wind and the adsorption force of the cotton collector's negative pressure chamber are insufficient, making it easy for some clumped mineral wool fibers to fall directly under the action of gravity and unable to gather on the cotton collector, resulting in raw material loss. Second, there is a conflict between the fiber radiation trajectory and the effect of gravity. Since the mineral wool fibers thrown out during the centrifugal fiber forming process are fan-shaped, the mineral wool fibers with horizontal or downward radiation directions are more likely to escape from the adsorption area of ​​the cotton collector under the combined effect of gravity, and fall prematurely before reaching the negative pressure area of ​​the cotton collector. Traditional negative pressure adsorption cannot effectively cover this type of movement trajectory and falls onto the scraper below, making it impossible for the mineral wool fibers to gather on the cotton collector, resulting in raw material waste; Third, there is a technical contradiction between slag ball separation and fiber recovery. When the melt produced by the furnace is centrifuged into fibers by the centrifuge, some slag balls or heavy coarse fibers will be produced. These slag balls or coarse fibers do not meet the shape and size requirements of the mineral wool product fibers. The existing equipment relies on gravity for natural separation and cannot effectively separate the slag balls and coarse fibers that do not meet the product standards to the scraper for recovery. It is impossible to ensure that qualified fibers enter the cotton collection area. That is, the existing technology lacks a physical screening mechanism, which results in slag balls being mixed into the finished product or fibers being mistakenly entered into the waste.

[0003] Fourth, in the existing technology, an auxiliary fan is introduced between the cotton collector and the centrifuge, such as a side blower is set to lift the mineral wool fibers. However, in this method, the impeller fan will generate non-uniform turbulence, destroying the directional arrangement of the mineral wool fibers, and the lateral airflow changes the movement trajectory of the fibers, resulting in edge accumulation of the cotton collector and deviation in the thickness of the mineral wool fibers. In addition, the high temperature and high humidity environment can easily cause scaling of the impeller, requiring frequent shutdowns for cleaning, insufficient equipment utilization, and affecting production efficiency. Summary of the Invention

[0004] In response to the problems existing in the prior art, the present invention provides a cotton lifting device for a mineral wool collector and a method for using the device. By arranging the cotton lifting device between the centrifuge and the cotton collector and adopting a bladeless gas flow design, it not only satisfies the purpose of providing an upward airflow to drive a part of the mineral wool fibers to return to the adsorption area of ​​the cotton collector, but also does not affect the slag balls or overly heavy coarse fibers generated by the centrifuge to continue to descend and fall into the scraper to achieve separation, thereby reducing raw material waste and ensuring production efficiency.

[0005] The technical solutions of the present invention are as follows: In a first aspect of the present invention, a cotton collecting machine and cotton lifting device for mineral wool is provided, comprising a ring tube bracket, on which a plurality of groups of rectangular ring tubes are provided, wherein the rectangular ring tubes comprise a ring tube outer shell and a ring tube inner shell, the upper parts of the ring tube outer shell and the ring tube inner shell are sealed and connected, and the lower part of the ring tube inner shell is inclined at a certain angle away from the ring tube outer shell to form an air chamber with the ring tube outer shell; the bottom of the ring tube outer shell is provided with a first arc structure bent toward the ring tube inner shell, and the bottom of the ring tube inner shell is provided with a second arc structure bent toward the ring tube outer shell, and the bottoms of the first arc structure and the second arc structure are arranged at a certain distance to cooperate to form an annular gap. In some embodiments of the present invention, the ring tube support is arranged at the lower part of the negative pressure adsorption area of ​​the cotton collector and the upper part of the scraper, and the plurality of groups of rectangular ring tubes are arranged in parallel and side by side on the ring tube support. In some embodiments of the present invention, it further includes a gas source, a gas storage tank and several gas circuits, the gas source is connected to the gas storage tank through a pipeline, the gas storage tank is connected to the several gas circuits, and the several gas circuits are respectively connected to several groups of rectangular ring tubes. In some embodiments of the present invention, an air inlet pipe is provided at one end of the rectangular annular tube and communicates with the air chamber in the rectangular annular tube, and the air inlet pipe is connected to the air path. In some embodiments of the present invention, a ring tube support structure is provided at the other end of the rectangular ring tube, and the ring tube support structure is arranged on a ring tube bracket. In some embodiments of the present invention, the plurality of groups of rectangular ring tubes are respectively arranged on the ring tube brackets by U-shaped bolts. In some embodiments of the present invention, the lower portion of the annular tube inner shell is inclined 5-10 degrees away from the annular tube outer shell, and the outer surface of the annular tube inner shell is configured as a smooth transition structure. In some embodiments of the present invention, the width of the annular gap is set to 1-5 mm.

[0006] In some embodiments of the present invention, the annular tube outer shell and the annular tube inner shell are made of corrosion-resistant materials. In a second aspect of the present invention, a method for using a mineral wool collector and a lifting device is provided, comprising: The ring tube bracket is set at the lower part of the negative pressure adsorption area of ​​the cotton collector and the upper part of the scraper, and several groups of rectangular ring tubes are set according to actual conditions; The compressed air generated by the starting gas source is input into the gas storage tank, which can store a certain amount of compressed air and maintain a stable pressure; The gas storage tank introduces flowing gas into several groups of rectangular ring tubes through several air paths. After the air chamber is filled with gas, it is ejected upward through the annular gap along the inner shell surface of the ring tube to form a high-speed airflow, and drives the airflow in the middle position of the rectangular ring tube to flow upward, forming a stable and continuous upward airflow in the entire internal cross-section of the rectangular ring tube to provide lift for the mineral wool fibers.

[0007] One or more technical solutions of the present invention have the following beneficial effects: First, it significantly improves the fiber collection efficiency and reduces the waste of raw materials. Through the optimization of the adsorption force field, the device sprays high-speed airflow through the annular gap, and forms a stable low-pressure area above the gap based on the Bernoulli effect. The effective adsorption range of the cotton collector is extended downward, so that the horizontal or downward radiating mineral wool fibers can obtain secondary upward power, and the fiber capture rate is improved compared with the traditional solution. At the same time, by setting up a gravity sedimentation countermeasure mechanism, that is, the laminar rising airflow formed in the center of the rectangular ring tube, the sedimentation dynamic characteristics of the mineral wool fibers are accurately matched, and the problem of fiber shedding caused by gravity is completely solved.

[0008] Second, it achieves precise dynamic separation of slag balls and fibers. Through density gradient separation, the rising airflow has a weak force on the slag balls, while the lifting efficiency of qualified fibers is much higher than that of slag balls, which reduces the slag content of the product. At the same time, an interference-free falling channel is set up, and the bladeless design ensures zero airflow interference in the falling path of the slag balls. Combined with the airflow velocity gradient distribution in the center of the ring tube, free sedimentation conditions are created for heavy particles, and the sorting accuracy is several times higher than that of traditional equipment.

[0009] Third, breaking through the technical bottleneck of air flow uniformity, this device suppresses turbulence, and the rectangular long-side jets are superimposed in the central area to form a uniform velocity field. The turbulence intensity is effectively reduced compared to the impeller fan, and the mineral wool is laid more evenly on the cotton collector mesh belt, and the difference in product density is smaller. At the same time, the angle and slope design of the inner shell of the ring tube has a directional wall attachment effect, which makes most of the air flow flow along the wall, avoiding the disorder of fiber trajectory caused by air flow diffusion. Fourth, the device provided by the present invention has adaptability to extreme environments. The rectangular ring tube made of 304 stainless steel can withstand high temperature, high humidity and acid-base corrosion environments, has a short maintenance cycle, and high equipment utilization rate; and the rectangular ring tube can achieve self-cleaning and anti-clogging. The high-speed airflow at the edge of the annular gap automatically blows away the deposited fibers. Continuous operation reduces the amount of cotton accumulation, completely solving the performance degradation problem caused by scaling of the traditional fan impeller. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the overall structure of a mineral wool collector and lifting device provided in Example 1 of the present invention; Figure 2 This is a schematic cross-sectional view of a rectangular ring tube provided in Example 1 of the present invention; Figure 3 This is a schematic structural diagram of the rectangular ring tube provided in Example 1 of the present invention.

[0011] In the figure: 1. Gas source; 2. Gas storage tank; 3. Gas line; 4. Ring pipe bracket; 5. Rectangular ring pipe; 6. U-shaped bolt; 7. Air inlet pipe; 8. Ring pipe outer shell; 9. Ring pipe inner shell; 10. Ring pipe support. DETAILED DESCRIPTION

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Example 1 In a typical embodiment of the present invention, a cotton lifting device for a mineral wool collector is proposed, comprising a ring tube bracket 4, on which several groups of rectangular ring tubes 5 are provided, and the rectangular ring tubes 5 include a ring tube outer shell 8 and a ring tube inner shell 9, the upper parts of the ring tube outer shell 8 and the ring tube inner shell 9 are sealed and connected, and the lower part of the ring tube inner shell 9 is inclined at a certain angle away from the ring tube outer shell 8 to form an air chamber with the ring tube outer shell 8; the bottom of the ring tube outer shell 8 is provided with a first arc structure bent toward the ring tube inner shell 9, and the bottom of the ring tube inner shell 9 is provided with a second arc structure bent toward the ring tube outer shell 8, and the bottoms of the first arc structure and the second arc structure are arranged at a certain distance to cooperate to form an annular gap. This arrangement enables efficient airflow generation: the dual-arc design works synergistically, with the outer arc compressing the airflow to accelerate injection, while the inner arc guides the airflow to flow along the wall, significantly increasing the outlet airflow velocity and expanding the low-pressure adsorption range.

[0014] Dynamic sorting enhancement: The inclined air chamber structure forms a centripetal flow field, so that the light fibers are sucked into the central rising air flow, and the heavy slag balls fall freely along the outside of the gap, realizing the precise separation of fibers and slag balls.

[0015] Flow field stability guarantee: The hyperbolic curvature guide effectively suppresses airflow diffusion, eliminates vortex generation, and forms a uniform and stable laminar updraft.

[0016] Furthermore, the ring tube support 4 is arranged at the lower part of the negative pressure adsorption area of ​​the cotton collector and the upper part of the scraper, and the plurality of groups of rectangular ring tubes 5 are arranged in parallel and side by side on the ring tube support 4 . This arrangement precisely positions the ring tube bracket 4 between the negative pressure zone of the cotton collector and the scraper. Multiple ring tubes are arranged in parallel to compensate for the negative pressure blind spot. This directly covers the area below the conventional cotton collector where the suction force is attenuated, intercepting falling fibers. Continuous airflow coverage: The side-by-side ring tubes form a curtain wall of rising airflow with no dead zones, perfectly matching the angle of the fiber radiation sector.

[0017] Furthermore, it also includes a gas source 1, a gas storage tank 2 and several gas paths 3, the gas source 1 is connected to the gas storage tank 2 through a pipeline, the gas storage tank 2 is connected to the several gas paths 3, and the several gas paths 3 are respectively connected to several groups of rectangular ring tubes 5. With this arrangement, gas source 1 is pressure-stabilized by gas storage tank 2 and then supplied to the ring pipe through multiple branches, which brings the following advantages: Pressure stability: Air storage tank 2 eliminates the pressure pulsation caused by the start and stop of the compressor and maintains the stability of the gap jet velocity.

[0018] Wide-width adaptability: 3 independent air paths ensure uniform airflow at the edges and center of wide-width production lines.

[0019] Furthermore, an air inlet pipe 7 is provided at one end of the rectangular annular tube 5 , communicating with the air chamber in the rectangular annular tube 5 , and the air inlet pipe 7 is connected to the air path 3 . With this arrangement, the air inlet pipe 7 is directly connected to the ring pipe air chamber to achieve the following design: Minimized flow resistance: Avoids pressure loss caused by complex piping and improves gas energy utilization. Anti-clogging design: The straight-through structure eliminates the risk of cotton accumulation in elbows and significantly extends the continuous operation cycle.

[0020] Furthermore, a ring tube support 10 structure is provided at the other end of the rectangular ring tube 5 , and the ring tube support 10 structure is arranged on the ring tube bracket 4 .

[0021] This setup, with independent support structures at the ends of the ring tube, produces key effects: Vibration control: suppresses the interference of mechanical vibration of the equipment on gap accuracy, ensuring the stability of the jet trajectory. Thermal deformation compensation: a reserved expansion gap eliminates structural stress deformation in high temperature environments.

[0022] Furthermore, the plurality of groups of rectangular ring tubes 5 are respectively arranged on the ring tube bracket 4 through U-shaped bolts 6 .

[0023] This setup, with the ring tubes secured with U-bolts, improves maintenance: a single set of ring tubes can be replaced in a very short time, minimizing production downtime. Precision guaranteed: The controlled preload ensures that the annular gap width remains within high tolerances.

[0024] Furthermore, the lower portion of the annular tube inner shell 9 is inclined 5-10 degrees away from the annular tube outer shell 8 , and the outer surface of the annular tube inner shell 9 is configured as a smooth transition structure.

[0025] This design, with its specific tilt angle and smooth surface transition, enhances the wall adhesion effect. The tilted surface guides the airflow to flow closely, significantly extending the effective range. Energy loss control: The smooth surface greatly reduces kinetic energy loss caused by boundary layer separation. Furthermore, the width of the annular gap is set to 1-5 mm.

[0026] With this setting, the specific selection of the annular gap width achieves a dual balance: energy consumption and efficiency are balanced, and compressed air consumption is controlled while maintaining a high-speed jet; anti-blocking reliability is improved, and the width design avoids the typical slag ball particle size to eliminate the risk of blockage.

[0027] Furthermore, the annular tube outer shell 8 and the annular tube inner shell 9 are made of corrosion-resistant materials.

[0028] The ring tube is made of corrosion-resistant metal material to provide chemical protection, resist the corrosion erosion of adhesive vapor and high-temperature moisture, and withstand high temperatures to maintain structural strength and dimensional stability in high-temperature environments.

[0029] In a second aspect of the present invention, a method for using a mineral wool collector and a lifting device is provided, comprising: The ring tube bracket 4 is set at the lower part of the negative pressure adsorption area of ​​the cotton collector and the upper part of the scraper, and several groups of rectangular ring tubes 5 are set according to actual conditions; After starting the gas source 1 to generate compressed air, it is input into the gas storage tank 2. The gas storage tank 2 can store a certain amount of compressed air and maintain a stable pressure; The gas storage tank 2 introduces flowing gas into several groups of rectangular annular tubes 5 through several gas paths 3. After the gas chamber is filled with gas, it is ejected upward along the surface of the annular tube inner shell 9 through the annular gap to form a high-speed airflow, and drives the airflow in the middle position of the rectangular annular tube 5 to flow upward together, forming a stable and continuous upward airflow in the entire internal cross-section of the rectangular annular tube 5 to provide lift for the mineral wool fibers.

[0030] The above method can achieve precise and adjustable lift force, meet the needs of conventional fiber lifting, lift larger mass fiber clusters, and realize fine control of fibers with different specific gravities; it has energy synergy benefits, sharing the factory compressed air system to reduce additional energy consumption, and the air tank 2 buffer ensures instantaneous airflow response; it can ensure production continuity, and the airflow establishment time is significantly shorter than that of traditional fans, avoiding production interruptions caused by equipment startup.

[0031] In this embodiment, after the air chamber is filled with compressed air, air is ejected from a 2 mm annular gap, forming a high-speed airflow and generating an annular negative pressure area, which draws in the bottom air.

[0032] The outside of the annular tube inner shell 9 is designed to have a certain slope, guiding the high-speed airflow to flow at high speed along its surface, further increasing the gas flow rate and forming a negative pressure around the airflow, driving the airflow in the middle position of the rectangular annular tube to flow upward, and finally forming a stable and continuous upward airflow in the entire rectangular annular tube cross-section.

[0033] The exhaust volume and exhaust parameters of the air compressor used in the air source 1 can meet the continuous consumption requirements of the rectangular ring tube 5.

[0034] The volume of the gas storage tank 2 is large enough to store a certain amount of compressed gas and provide a stable gas pressure for the continuous consumption of the rectangular ring tube 5.

[0035] Since the working position of the rectangular ring tube 5 is at the lower part of the negative pressure collection area of ​​the cotton collector, a high temperature and high humidity environment is formed here due to the spraying of the centrifuge binder, the evaporation of water in the lower scraper, and the high temperature of the melt itself, which is easy to cause corrosion to the metal. Therefore, the ring tube outer shell 8 and the ring tube inner shell 9 of the rectangular ring tube 5 are made of stainless steel 304 to avoid corrosion.

[0036] In order to strengthen the central wind force of the rectangular ring tube 5 , the rectangular ring tube 5 is designed as a whole with a rectangular structure, so that the high-speed airflows on the long sides on both sides can be superimposed to form a combined force.

[0037] To ensure the airflow from the 2mm gap more easily adheres to the outer surface of the annular tube inner shell 9, the outer surface of the annular tube inner shell 9 adopts a smooth transition. At the same time, the angle of the bevel is set at about 7 degrees, guiding the airflow to flow closely and extending the effective range.

[0038] First, it significantly improves the fiber collection efficiency and reduces the waste of raw materials. Through the optimization of the adsorption force field, the device sprays high-speed airflow through the annular gap, and forms a stable low-pressure area above the gap based on the Bernoulli effect. The effective adsorption range of the cotton collector is extended downward, so that the horizontal or downward radiating mineral wool fibers can obtain secondary upward power, and the fiber capture rate is improved compared with the traditional solution. At the same time, by setting up a gravity sedimentation countermeasure mechanism, that is, the laminar rising airflow formed in the center of the rectangular ring tube, the sedimentation dynamic characteristics of the mineral wool fibers are accurately matched, and the problem of fiber shedding caused by gravity is completely solved.

[0039] Second, it achieves precise dynamic separation of slag balls and fibers. Through density gradient separation, the rising airflow has a weak force on the slag balls, while the lifting efficiency of qualified fibers is much higher than that of slag balls, which reduces the slag content of the product. At the same time, an interference-free falling channel is set up, and the bladeless design ensures zero airflow interference in the falling path of the slag balls. Combined with the airflow velocity gradient distribution in the center of the ring tube, free sedimentation conditions are created for heavy particles, and the sorting accuracy is several times higher than that of traditional equipment.

[0040] Third, breaking through the technical bottleneck of air flow uniformity, this device suppresses turbulence, and the rectangular long-side jets are superimposed in the central area to form a uniform velocity field. The turbulence intensity is effectively reduced compared to the impeller fan, and the mineral wool is laid more evenly on the cotton collector mesh belt, and the difference in product density is smaller. At the same time, the 9-degree slope design of the inner shell of the ring tube has a directional wall attachment effect, which makes most of the air flow flow along the wall, avoiding the disorder of fiber trajectory caused by air flow diffusion. Fourth, the device provided by the present invention has adaptability to extreme environments. The rectangular ring tube made of 304 stainless steel can withstand high temperature, high humidity and acid-base corrosion environments, has a short maintenance cycle, and high equipment utilization rate; and the rectangular ring tube can achieve self-cleaning and anti-clogging. The high-speed airflow at the edge of the annular gap automatically blows away the deposited fibers. Continuous operation reduces the amount of cotton accumulation, completely solving the performance degradation problem caused by scaling of the traditional fan impeller.

[0041] Although the above describes the specific embodiments of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without any creative work are still within the scope of protection of the present invention.

Claims

1. A mineral wool collector and lifting device, characterized in that: It includes a ring tube bracket, on which are provided several groups of rectangular ring tubes, the rectangular ring tubes including a ring tube outer shell and a ring tube inner shell, the upper parts of the ring tube outer shell and the ring tube inner shell are sealed and connected, and the lower part of the ring tube inner shell is inclined at a certain angle away from the ring tube outer shell to form an air chamber with the ring tube outer shell; the bottom of the ring tube outer shell is provided with a first arc structure bent toward the ring tube inner shell, and the bottom of the ring tube inner shell is provided with a second arc structure bent toward the ring tube outer shell, and the bottoms of the first arc structure and the second arc structure are arranged at a certain distance to cooperate to form an annular gap.

2. A mineral wool collector and lifting device as claimed in claim 1, characterized in that: The ring tube support is arranged at the lower part of the negative pressure adsorption area of ​​the cotton collector and the upper part of the scraper, and the plurality of groups of rectangular ring tubes are arranged in parallel on the ring tube support.

3. The mineral wool collector and lifting device according to claim 1, characterized in that: It also includes a gas source, a gas storage tank and several gas circuits. The gas source is connected to the gas storage tank through a pipeline. The gas storage tank is connected to the several gas circuits. The several gas circuits are respectively connected to several groups of rectangular ring pipes.

4. A mineral wool collector and lifting device as claimed in claim 3, characterized in that: An air inlet pipe is provided at one end of the rectangular annular tube and is communicated with the air chamber in the rectangular annular tube, and the air inlet pipe is connected to the air path.

5. The mineral wool collector and lifting device according to claim 1, characterized in that: The other end of the rectangular ring tube is provided with a ring tube support structure, and the ring tube support structure is arranged on the ring tube bracket.

6. The mineral wool collector and lifting device according to claim 1, characterized in that: The plurality of groups of rectangular ring tubes are respectively arranged on the ring tube brackets through U-shaped bolts.

7. The mineral wool collector and lifting device according to claim 1, characterized in that: The lower portion of the annular tube inner shell is arranged to be inclined 5-10 degrees away from the annular tube outer shell, and the outer surface of the annular tube inner shell is arranged to be a smooth transition structure.

8. The mineral wool collector and lifting device according to claim 1, characterized in that: The width of the annular gap is set to 1-5 mm.

9. The mineral wool collector and lifting device according to claim 1, characterized in that: The annular tube outer shell and the annular tube inner shell are made of corrosion-resistant materials.

10. A method for using a mineral wool collector and a lifting device according to any one of claims 1 to 9, characterized in that: include: The ring tube bracket is set at the lower part of the negative pressure adsorption area of ​​the cotton collector and the upper part of the scraper, and several groups of rectangular ring tubes are set according to actual conditions; The compressed air generated by the starting gas source is input into the gas storage tank, which can store a certain amount of compressed air and maintain a stable pressure; The gas storage tank introduces flowing gas into several groups of rectangular ring tubes through several air paths. After the air chamber is filled with gas, it is ejected upward through the annular gap along the inner shell surface of the ring tube to form a high-speed airflow, and drives the airflow in the middle position of the rectangular ring tube to flow upward, forming a stable and continuous upward airflow in the entire internal cross-section of the rectangular ring tube to provide lift for the mineral wool fibers.

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