A glass wool centrifugal fiber forming machine

Abstract

The present invention proposes a glass wool centrifugal fiberizing machine, comprising: a frame; a centrifugal assembly including a centrifuge and a driving device, the centrifuge including a disc and a barrel, the disc having a centrifugal chamber connected to the inner cavity of the barrel, a plurality of glass liquid spray holes on the side wall of the disc, the barrel being vertically rotatably arranged on the frame, and the driving device being used to drive the centrifuge to rotate; an internal combustion assembly including a fixed frame and an internal combustion tube body, the internal combustion tube body being coaxially inserted in the barrel body, the upper end of the internal combustion tube body being fixedly connected to the frame through the fixed frame, the lower end of the internal combustion tube body extending into the centrifugal chamber, the tube wall of the internal combustion tube body being provided with an air intake chamber connected to the centrifugal chamber along its axial direction, and an air inlet connected to the air intake chamber being provided on the upper side wall of the internal combustion tube body. The glass wool centrifugal fiberizing machine disclosed by the present invention will not cause the risk of glass liquid overflowing from the centrifuge, thereby ensuring that the glass liquid can efficiently participate in fiberization and avoiding the waste of glass liquid raw materials.

Description

Technical Field

[0001] The invention relates to the technical field of glass wool production, and in particular to a glass wool centrifugal fiber-forming machine. Background Art

[0002] In the glass wool production process, the centrifuge is where the glass fiber is finally produced, and this is the key to the quality control of the glass fiber. Temperature control is the key to quality control. Only constant temperature and air pressure, as well as the speed of the centrifuge, can pull out glass fibers of constant thickness. As time goes by and the load changes, the power supply will also fluctuate, which will affect the temperature of the liquid glass in the leak plate and the spindle speed. Similarly, the composition of the input natural gas and changes in pressure will also cause changes in air pressure and temperature. Changes in these factors will cause changes in the diameter of the final output glass fiber, thereby affecting the quality of the glass fiber.

[0003] For example, the patent with publication number CN105819681A discloses a glass wool centrifuge heat compensation device and method, which heats the molten glass in the centrifuge by adding an auxiliary burner into the centrifuge, thereby reducing the viscosity of the molten glass and making it easier to refine the glass fibers. However, the auxiliary burner is eccentrically arranged in the centrifuge, and the thin stream of molten glass falls eccentrically into the centrifuge. During the high-speed rotation of the centrifuge, the molten glass is thrown toward the peripheral wall of the centrifuge and collides with the auxiliary burner, causing part of the molten glass to splash out from the top opening of the centrifuge. This part of the molten glass cannot participate in the fiber forming process, resulting in a waste of molten glass raw materials. Summary of the invention

[0004] In view of this, the present invention proposes a glass wool centrifugal fiberizing machine to solve the problem that an auxiliary burner is eccentrically arranged in the existing glass wool centrifugal fiberizing machine. During the centrifugal throwing out of the molten glass, the molten glass will collide with the auxiliary burner, and there is a risk that part of the molten glass will splash out from the top opening of the centrifuge, resulting in the splashed glass being unable to participate in the fiberizing process, resulting in a waste of glass liquid raw materials.

[0005] The technical solution of the present invention is achieved in this way:

[0006] The present invention provides a glass wool centrifugal fiber-forming machine, comprising:

[0007] frame;

[0008] A centrifugal assembly, wherein the centrifugal assembly comprises a centrifuge and a driving device, wherein the centrifuge comprises a disc and a barrel, wherein the barrel is vertically fixedly arranged at the center of the top surface of the disc, wherein the disc has a centrifugal chamber connected to the inner cavity of the barrel, wherein the side wall of the disc is provided with a plurality of glass liquid spray holes connected to the centrifugal chamber, wherein the barrel is vertically rotatably arranged on a frame, wherein the driving device is fixedly arranged on the frame and used for driving the centrifuge to rotate;

[0009] The internal combustion assembly includes a fixing frame and an internal combustion tube body, wherein the internal combustion tube body is coaxially inserted in the cylinder body, the internal combustion tube body and the cylinder body are gap-matched, the upper end of the internal combustion tube body is fixedly connected to the frame through the fixing frame, the lower end of the internal combustion tube body extends into the centrifugal chamber, an air intake chamber connected to the centrifugal chamber is opened in the tube wall of the internal combustion tube body along its axial direction, and an air intake port connected to the air intake chamber is opened on the upper side wall of the internal combustion tube body.

[0010] On the basis of the above technical solution, preferably, the air intake chamber is arranged around the tube wall of the internal combustion tube body.

[0011] On the basis of the above technical solution, preferably, a first air guide cover is fixedly provided at the lower end of the internal combustion tube body, the first air guide cover is located in the centrifugal chamber, the upper end of the first air guide cover is connected to the inner cavity of the internal combustion tube body, the lower end diameter of the first air guide cover is larger than the upper end diameter of the first air guide cover, a first air guide chamber connected to the air inlet chamber is surrounded by the hood wall of the first air guide cover, and a plurality of first air outlet holes connected to the first air guide chamber are provided on the bottom inner wall of the first air guide cover.

[0012] Further, preferably, the bottom end of the first air guide cover is bent upward to form a second air guide cover, and a second air guide chamber connected to the first air guide chamber is arranged around the cover wall of the second air guide cover, and a plurality of second air outlet holes connected to the second air guide chamber are arranged on the bottom inner wall of the second air guide cover.

[0013] Furthermore, preferably, the angle α between the first air deflector and the horizontal direction is set to 0° to 45°, and the angle β between the second air deflector and the horizontal direction is set to 45° to 90°.

[0014] On the basis of the above technical solution, preferably, it also includes a combustion chamber, which is arranged around the top of the disc and fixedly connected to the frame, and the flame airflow nozzle of the combustion chamber includes a first guide surface close to the cylinder and a second guide surface away from the cylinder, the second guide surface is inclined toward the glass liquid nozzle, the first guide surface is perpendicular to the horizontal plane, and the angle γ between the second guide surface and the vertical direction is set to 0.1°~10°.

[0015] Further, preferably, a plurality of exhaust holes are provided on the top surface of the disk body close to the cylinder body, the top surface of the disk body has a drainage hood, a drainage cavity connected to the exhaust holes is formed between the drainage hood and the top surface of the disk body, and an air guide hole corresponding to the flame airflow nozzle is provided on the side of the drainage cavity away from the cylinder body.

[0016] On the basis of the above technical solution, preferably, a stretching wind disk surrounding the outer peripheral side of the disk body is also provided at the bottom of the combustion chamber, a wind cavity for introducing high-pressure air is opened inside the stretching wind disk, at least one stretching air port is opened on the side of the stretching wind disk facing the disk body, the stretching air port is inclined downward, and a cut-off wind disk surrounding the outer peripheral side of the disk body is also provided at the bottom of the stretching wind disk, and a cut-off wind port inclined downward is opened on the side of the cut-off wind disk facing the disk body.

[0017] Preferably, a plurality of bearings are arranged at intervals along the vertical direction between the cylinder and the internal combustion tube body, at least one dynamic seal is also arranged between the cylinder and the internal combustion tube body, and a funnel for receiving the glass liquid flow is also fixedly arranged at the top end of the internal combustion tube body.

[0018] Preferably, a first guide portion is provided between the inner bottom surface and the inner wall of the centrifugal chamber, a second guide portion is provided between the inner top surface and the inner wall of the centrifugal chamber, the cross-sectional shape of the glass liquid spray hole is a truncated cone structure, and the outer diameter of the glass liquid spray hole is smaller than the inner diameter.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) By coaxially inserting the internal combustion tube body into the centrifuge, the internal combustion tube body remains in a fixed position in the centrifuge, and the glass liquid can fall in through the top of the internal combustion tube body, and then fall vertically into the centrifugal chamber through the internal combustion tube body, ensuring that the glass liquid enters the centrifugal chamber and is in the center position. During the high-speed rotation of the centrifuge, the glass liquid in the centrifugal chamber can be evenly thrown out to the surroundings. At the same time, natural gas can be introduced into the air inlet chamber through the first air inlet. After the natural gas flows into the centrifugal chamber through the bottom end of the internal combustion tube body, it can be ignited, thereby heating the glass liquid in the centrifugal chamber. By increasing the temperature of the glass liquid, the continuity of its molten state is ensured, so that the glass liquid in the centrifugal chamber meets the temperature required for centrifugal fiberization. Since the internal combustion tube is located at the center of the centrifugal chamber, the glass liquid is always thrown out to the surroundings away from the internal combustion tube during the centrifugal process, and the glass liquid will not collide with the internal combustion tube, which can ensure that the glass liquid is stable during the centrifugal process. At the same time, the top surface of the disk is in a closed state, and the glass liquid is only thrown out through the glass liquid spray hole, which will not cause the risk of glass liquid overflowing from the centrifuge, thereby ensuring that the glass liquid in the centrifuge can efficiently participate in glass wool fiberization and avoid waste of glass liquid raw materials;

[0021] (2) The air inlet chamber is arranged in a surrounding manner inside the tube wall of the internal combustion tube body. Thus, the interior of the tube wall of the entire internal combustion tube body is arranged hollow. In this way, after the natural gas is sprayed out from the bottom end of the internal combustion tube body, it can be released in a ring state around the internal combustion tube body, thereby uniformly heating the glass liquid in the centrifugal chamber. During the filling and centrifugal process of the glass liquid, all positions of the glass liquid around the internal combustion tube body can be heated, thereby improving the temperature consistency of the glass liquid after heating, thereby ensuring the diameter consistency of the glass liquid after centrifugal fiberization;

[0022] (3) By fixing a first guide cover in a bell-mouth shape at the lower end of the internal combustion tube body, after the natural gas enters the air inlet chamber, it will flow downward into the first guide chamber, and then be ejected from the first air outlet hole on the bottom inner wall of the first guide cover. Since the first guide cover is in a bell-mouth shape, the first guide cover can cover a certain area of ​​the bottom surface of the centrifugal chamber. When the glass liquid enters from the internal combustion tube body and passes through the first guide cover and falls onto the bottom surface of the centrifugal chamber, the multiple first air outlet holes on the bottom surface of the first guide cover can heat the glass liquid at the bottom surface of the centrifugal chamber over a large range, and the effective area for heating the glass liquid becomes larger. In this way, on the one hand, the temperature of the heated glass liquid can be increased, and at the same time, the combustion efficiency of the natural gas can be improved;

[0023] (4) A second flow guide cover is formed by bending upward at an angle at the bottom end of the first flow guide cover, and a second flow guide chamber connected to the first flow guide chamber is arranged around the cover wall of the second flow guide cover, and a plurality of second air outlets connected to the second flow guide chamber are arranged on the bottom inner wall of the second flow guide cover. According to this arrangement, a part of the natural gas introduced into the air inlet chamber is ejected from the first air outlet to burn and heat the glass liquid covered by the bottom surface of the first flow guide cover, and another part of the natural gas enters the second flow guide chamber and is ejected from the second air outlet. The bottom surface of the second flow guide cover is inclined toward the inner wall of the centrifugal chamber, so that the natural gas ejected from the second air outlet can heat the glass liquid film on the inner wall of the centrifugal chamber during the combustion process;

[0024] (5) A plurality of exhaust holes are provided on the top surface of the disk body close to the cylinder body, and a drainage cover is provided on the top surface of the disk body. A drainage cavity connected to the exhaust holes is formed between the drainage cover and the top surface of the disk body, and a gas guide hole corresponding to the flame airflow nozzle is provided on the side of the drainage cavity away from the cylinder body. With this arrangement, the unburned natural gas in the centrifugal chamber will flow upward, enter the drainage cavity through the exhaust holes, and be introduced into the flame airflow nozzle by the gas guide hole, so that the unused natural gas in the centrifugal chamber can be fully burned at the flame airflow nozzle, which can improve the heating temperature of the flame airflow nozzle on the one hand, and avoid the waste of natural gas in the centrifugal chamber on the other hand. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a schematic diagram of the planar structure of the glass wool centrifugal fiberizing machine disclosed in the present invention;

[0027] Figure 2 for Figure 1 A partial enlarged view of the middle part;

[0028] Reference numerals:

[0029] 1. Frame; 2. Centrifugal assembly; 21. Centrifuge; 22. Driving device; 211. Plate; 212. Cylinder; 2110. Centrifugal chamber; 2111. Glass liquid spray hole; 3. Internal combustion assembly; 31. Fixing frame; 32. Internal combustion tube; 321. Air inlet chamber; 322. Air inlet; 33. First guide cover; 331. First guide chamber; 3311. First air outlet; 34. Second guide cover; 341. Second guide chamber chamber; 3411, second air outlet; 4, combustion chamber; 40, flame air flow nozzle; 401, first guide surface; 402, second guide surface; 2112, exhaust hole; 2113, guide cover; 2114, guide chamber; 2115, air guide hole; 5, stretching wind disk; 51, stretching air outlet; 6, cut-off wind disk; 61, cut-off air outlet; S, bearing; M, seal; 323, funnel; D1, first guide part; D2, second guide part. DETAILED DESCRIPTION

[0030] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] like Figure 1 As shown, combined Figure 2 The embodiment of the present invention discloses a glass wool centrifugal fiberizing machine, including a frame 1, a centrifugal component 2 and an internal combustion component 3.

[0032] Among them, the centrifugal component 2 is used to perform primary fiberization on the glass liquid. Specifically, the centrifugal component 2 in this embodiment includes a centrifuge 21 and a driving device 22. The centrifuge 21 includes a disk body 211 and a cylinder body 212. The cylinder body 212 is vertically fixed at the center of the top surface of the disk body 211. The disk body 211 has a centrifugal chamber 2110 connected to the inner cavity of the cylinder body 212. The side wall of the disk body 211 is provided with a plurality of glass liquid spray holes 2111 connected to the centrifugal chamber 2110. The cylinder body 212 is vertically rotatably arranged on the frame 1. The driving device 22 is fixedly arranged on the frame 1 to drive the centrifuge 21 to rotate.

[0033] By adopting the above technical scheme, the molten glass liquid stream can fall vertically into the cylinder 212 and enter the centrifugal chamber 2110 of the disk 211. The centrifuge 21 can be driven to rotate at high speed by the driving device 22. Under the action of centrifugal force, the glass liquid is thrown out from a large number of glass liquid nozzles 2111 on the side wall of the centrifugal chamber 2110 to form continuous glass liquid thin streams, namely primary fibers. Since the cylinder 212 and the disk 211 are coaxial, the glass liquid that enters the centrifugal chamber 2110 through the cylinder 212 is initially located at the center of the centrifugal chamber 2110. During the high-speed centrifugation process, the glass liquid thin streams thrown out to the surroundings are uniform. In addition, through the arrangement of the cylinder 212, the glass liquid flowing vertically downward in the kiln can be kept warm by the cylinder 212 after entering the cylinder 212, which can reduce the temperature loss of the glass liquid in the process of flowing from top to bottom to a certain extent, so that the glass liquid can reach the fiberizing temperature after entering the centrifugal chamber 2110.

[0034] During the centrifugal process of the glass liquid, the temperature of the glass liquid in the centrifuge 21 is crucial. As time goes by and the load changes, the power supply will also fluctuate, which will affect the temperature of the liquid glass in the leak plate and the spindle speed. After the glass liquid enters the centrifugal chamber 2110, the temperature of the glass liquid drops and the viscosity increases, making it difficult to eject.

[0035] In the prior art, a centrifuge with a top opening structure is mostly used, and the centrifuge is coaxially fixedly connected with the main shaft, and then an auxiliary burner is eccentrically arranged in the centrifuge to heat the molten glass in the centrifuge. Although this method can increase the temperature of the molten glass and facilitate the molten glass to be thrown out into fibers through the glass liquid nozzle hole, during the centrifugal throwing of the molten glass, the molten glass will collide with the eccentrically arranged auxiliary burner, and there is a risk of part of the molten glass splashing out from the top opening of the centrifuge, which will cause the splashed molten glass to be unable to participate in the fiber-forming process, resulting in a problem of waste of molten glass raw materials.

[0036] To this end, the present invention provides an internal combustion component 3 on the basis of the above-mentioned scheme. Specifically, the internal combustion component 3 includes a fixing frame 31 and an internal combustion tube body 32. The internal combustion tube body 32 is coaxially inserted in the cylinder 212. The internal combustion tube body 32 and the cylinder 212 are clearance-matched. The upper end of the internal combustion tube body 32 is fixedly connected to the frame 1 through the fixing frame 31, and the lower end of the internal combustion tube body 32 extends into the centrifugal chamber 2110. An air intake chamber 321 connected to the centrifugal chamber 2110 is opened in the tube wall of the internal combustion tube body 32 along its axial direction, and an air intake port 322 connected to the air intake chamber 321 is opened on the upper side wall of the internal combustion tube body 32.

[0037] By adopting the above technical scheme, the internal combustion tube body 32 remains in position in the centrifuge 21, and the glass liquid can fall in through the top of the internal combustion tube body 32, and then fall vertically into the centrifugal chamber 2110 through the internal combustion tube body 32, ensuring that the glass liquid enters the centrifugal chamber 2110 and is in the center position. During the high-speed rotation of the centrifuge 21, the glass liquid in the centrifugal chamber 2110 can be evenly thrown out to the surroundings. At the same time, natural gas can be introduced into the air inlet chamber 321 through the first air inlet 322. After the natural gas flows into the centrifugal chamber 2110 through the bottom end of the internal combustion tube body 32, it can be ignited, thereby heating the glass liquid in the centrifugal chamber 2110. By increasing the temperature of the glass liquid, the continuity of its molten state is guaranteed, so that the glass liquid in the centrifugal chamber 2110 meets the temperature required for centrifugal fiberization. Since the internal combustion tube body 32 is located at the center of the centrifugal chamber 2110, the glass liquid is always thrown out to the surrounding areas away from the internal combustion tube body 32 during the centrifugal process. The glass liquid will not collide with the internal combustion tube body 32, which can ensure that the glass liquid is in a stable state during the centrifugal process. At the same time, the top surface of the disk body 211 is in a closed state, and the glass liquid will only be thrown out through the glass liquid spray hole 2111, and there is no risk of glass liquid overflowing from the centrifuge 21, thereby ensuring that the glass liquid in the centrifuge can efficiently participate in glass wool fiberization and avoiding waste of glass liquid raw materials.

[0038] In order to ensure that the natural gas evenly heats the glass liquid in the centrifugal chamber 2110, the solution adopted in this embodiment is to surround the air inlet chamber 321 in the tube wall of the internal combustion tube body 32. With this arrangement, the interior of the tube wall of the entire internal combustion tube body 32 is hollow, so that after the natural gas is ejected from the bottom end of the internal combustion tube body 32, it can be released in a ring state around the internal combustion tube body 32, thereby evenly heating the glass liquid in the centrifugal chamber 2110, so that during the filling and centrifugal process of the glass liquid, all positions of the glass liquid around the internal combustion tube body 32 can be heated, thereby improving the temperature consistency of the glass liquid after heating, thereby ensuring the diameter consistency of the glass liquid after centrifugal fiberization.

[0039] After the glass liquid falls vertically from the internal combustion tube body 32 to the inner bottom surface of the centrifugal chamber 2110, it will be instantly thrown out by the high-speed rotating centrifuge 21. Since the disk body 211 has a certain diameter, the glass liquid will gradually move toward the inner wall of the centrifugal chamber 2110 during the centrifugal process. At this time, the movement state of the natural gas introduced into the centrifugal chamber 2110 by the air intake chamber 321 is to directly touch the inner bottom surface of the centrifugal chamber 2110, thereby heating the glass liquid in the middle of the centrifugal chamber 2110. In this process, since the centrifugal speed of the glass liquid is very fast, the natural gas heating time for the glass liquid in the middle of the centrifugal chamber 2110 is very short, and the glass liquid is instantly thrown onto the inner wall of the centrifugal chamber 2110, resulting in an unclear increase in the temperature of the glass liquid, which also reduces the combustion efficiency of the natural gas.

[0040] To this end, the present invention adopts the following technical solution: a first air guide cover 33 is fixedly arranged at the lower end of the internal combustion tube body 32, the first air guide cover 33 is located in the centrifugal chamber 2110, the upper end of the first air guide cover 33 is connected to the inner cavity of the internal combustion tube body 32, the lower end diameter of the first air guide cover 33 is larger than the upper end diameter of the first air guide cover 33, more specifically, the first air guide cover 33 is in a bell-mouth shape, the wall thickness of the first air guide cover 33 is consistent with the wall thickness of the internal combustion tube body 32, the first air guide chamber 331 connected to the air inlet chamber 321 is surrounded by the cover wall of the first air guide cover 33, and a plurality of first air outlet holes 3311 connected to the first air guide chamber 331 are arranged on the bottom inner wall of the first air guide cover 33.

[0041] By adopting the above technical scheme, after the natural gas enters the air inlet chamber 321, it will flow downward into the first guide chamber 331, and then be ejected from the first air outlet 3311 on the bottom inner wall of the first guide cover 33. Since the first guide cover 33 is in the shape of a bell, the first guide cover 33 can cover a certain area of ​​the inner bottom surface of the centrifugal chamber 2110. When the glass liquid enters from the internal combustion tube body 32 and passes through the first guide cover 33 and falls onto the inner bottom surface of the centrifugal chamber 2110, the multiple first air outlet holes 3311 on the bottom surface of the first guide cover 33 can heat the glass liquid at the inner bottom surface of the centrifugal chamber 2110 over a large range, and the effective area of ​​the glass liquid heating becomes larger. In this way, on the one hand, the temperature of the heated glass liquid can be increased, and at the same time, the combustion efficiency of the natural gas can also be improved.

[0042] It is worth noting that the bottom diameter of the first flow guide 33 is smaller than the inner wall diameter of the centrifugal chamber 2110, and the bottom diameter of the first flow guide 33 is larger than half of the difference between the inner wall diameter of the centrifugal chamber 2110 and the outer diameter of the internal combustion tube 32. With this arrangement, the first flow guide 33 can cover a larger area of ​​the glass liquid, greatly increasing the temperature of the heated glass liquid.

[0043] It is worth noting that the distance from the bottom end of the first flow guide hood 33 to the bottom surface of the centrifugal chamber 2110 is less than or equal to half the height of the centrifugal chamber 2110. In this way, it can be ensured that after the glass liquid enters the centrifugal chamber 2110, the glass liquid film during the centrifugal process is lower than the bottom end of the first flow guide hood 33, thereby ensuring that the natural gas can effectively contact the surface of the glass liquid.

[0044] During the centrifugal throwing out of the glass liquid, the glass liquid film will adhere to the inner wall of the centrifugal chamber 2110. This part of the glass liquid will form primary fibers after being thrown out of the glass liquid nozzle hole 2111. The temperature control of this part of the glass liquid film is also very important. If the temperature of the glass liquid here is insufficient, the viscosity of the glass liquid may increase, thereby blocking the glass liquid nozzle hole 2111, resulting in some glass liquid nozzle holes 2111 being unable to throw out glass liquid thin streams.

[0045] To this end, the present invention adopts the following technical solution: Specifically, the present invention forms a second flow guide 34 at the bottom of the first flow guide 33 by tilting upward, and the second flow guide chamber 341 connected to the first flow guide chamber 331 is arranged around the wall of the second flow guide 34, and a plurality of second air outlets 3411 connected to the second flow guide chamber 341 are arranged on the bottom inner wall of the second flow guide 34. According to the arrangement, a part of the natural gas introduced into the air inlet chamber 321 is ejected from the first air outlet 3311 to burn and heat the glass liquid covered by the bottom surface of the first flow guide 33, and another part of the natural gas enters the second flow guide chamber 341 and is ejected from the second air outlet 3411. The bottom surface of the second flow guide is tilted toward the inner wall of the centrifugal chamber 2110, so that the natural gas ejected from the second air outlet 3411 can heat the glass liquid film on the inner wall of the centrifugal chamber 2110 during the combustion process.

[0046] The present invention can synchronously heat the glass liquid that is centrifugally moving on the bottom surface and inner wall of the centrifugal chamber 2110 by setting the first guide cover 33 and the second guide cover 34, thereby ensuring that the temperature of the glass liquid in the centrifugal chamber 2110 is within a suitable range, reducing the viscosity of the glass liquid and making it easier to refine the glass fibers.

[0047] In the above embodiment, the angle α between the first air guide hood 33 and the horizontal direction is set to 0°~45°. According to this setting, when the angle between the first air guide hood 33 and the horizontal direction is 0°, the area of ​​molten glass covered by the first air guide hood 33 is the largest, but at this time, the second air guide hood 34 cannot be set at the end of the first air guide hood 33. When the angle between the first air guide hood 33 and the horizontal direction is greater than 45°, the area of ​​molten glass covered by the first air guide hood 33 gradually decreases. Therefore, the angle α between the first air guide hood 33 and the horizontal direction is set to the above range, which can ensure that the first air guide hood 33 has a larger coverage range while taking into account the setting of the second air guide hood 34.

[0048] In the above embodiment, the angle β between the second air guide cover 34 and the horizontal direction is set to 45°~90°. When the angle between the second air guide cover 34 and the horizontal direction is 90°, the second air guide cover 34 can only cover the upper part of the inner wall of the centrifugal chamber 2110 in the horizontal direction, but cannot cover the lower part. When the angle between the second air guide cover 34 and the horizontal direction is 45°, the second air guide cover 34 can completely cover the inner wall of the centrifugal chamber 2110. When the angle between the second air guide cover 34 and the horizontal direction is less than 45°, the second air guide cover 34 cannot partially cover the upper part of the inner wall of the centrifugal chamber 2110. Therefore, the angle β between the first air guide cover 33 and the horizontal direction is set to the above range, which can ensure that the second air guide cover 34 has a larger coverage range.

[0049] The glass wool centrifugal fiberizing machine disclosed in the present invention also includes a combustion chamber 4, which is arranged around the top of the disc 211 and fixedly connected to the frame 1, and the flame airflow nozzle 40 of the combustion chamber 4 includes a first guide surface 401 close to the cylinder 212 and a second guide surface 402 away from the cylinder 212, the second guide surface 402 is inclined toward the glass liquid nozzle 2111, the first guide surface 401 is perpendicular to the horizontal plane, and the angle γ between the second guide surface 402 and the vertical direction is set to 0.1°~10°.

[0050] The second guide surface 402 faces the glass liquid spray hole 2111, and the angle γ between the second guide surface 402 and the vertical surface (the first guide surface 401) is preferably 0.1°-10°, and more preferably 5°-7°. The first guide surface 401 is perpendicular to the horizontal plane, and the first guide surface 401 is parallel to the outer surface of the disk body 211, and the relative distance between the first guide surface 401 and the outer surface of the disk body 211 in the horizontal direction is less than or equal to 2 mm. In this way, as many flame airflows of the flame airflow nozzles 40 as possible can be directed to the glass liquid spray hole 2111, increasing the heating area, making full use of the heat of the flame airflow, thereby reducing the natural gas consumption in the centrifugal disk, and ensuring that the glass liquid spray hole 2111 maintains a high temperature, so that the spinning process proceeds smoothly. Furthermore, the lower edge of the second guide surface 402 is closer to the glass liquid nozzle 2111 than the lower edge of the first guide surface 401, which can extend the guiding distance of the flame airflow, more fully guide the flame airflow to the glass liquid nozzle 2111, and increase the utilization rate of heat.

[0051] On the basis of the above technical solution, natural gas is continuously introduced into the centrifugal chamber 2110. However, since the glass liquid is thrown out at a high speed during the centrifugal process, part of the natural gas inside the centrifugal chamber 2110 is not fully burned, resulting in increased waste of natural gas energy. Since the centrifugal chamber 2110 is in a closed state, natural gas will accumulate more and more inside the centrifugal chamber 2110, which will pose an unsafe factor.

[0052] To this end, the solution adopted in this embodiment is: a plurality of exhaust holes 2112 are opened on the side of the top surface of the disc body 211 close to the cylinder body 212, the top surface of the disc body 211 is provided with a drainage cover 2113, a drainage chamber 2114 connected to the exhaust holes 2112 is formed between the drainage cover 2113 and the top surface of the disc body 211, and a gas guide hole 2115 corresponding to the flame airflow nozzle 40 is opened on the side of the drainage chamber 2114 away from the cylinder body 212. With this arrangement, the unburned natural gas in the centrifugal chamber 2110 will flow upward, enter the drainage chamber 2114 through the exhaust holes 2112, and be introduced into the flame airflow nozzle 40 through the gas guide hole 2115, so that the unused natural gas in the centrifugal chamber 2110 is fully burned in the flame airflow nozzle 40, which can improve the heating temperature of the flame airflow nozzle 40 on the one hand, and avoid the waste of natural gas in the centrifugal chamber 2110 on the other hand.

[0053] It is worth noting that due to the arrangement of the first flow guide 33 and the second flow guide 34, the glass liquid can be prevented from passing through the above-mentioned flow guide hoods and through the exhaust hole 2112 during the centrifugal process, which further avoids the risk of centrifugal overflow of the glass liquid inside the centrifugal chamber. At the same time, even if the glass liquid collides with the first flow guide hood 33 and the second flow guide hood 34, since the exhaust hole 2112 is above the first flow guide hood 33, it is difficult for the glass liquid to enter the exhaust hole 2112.

[0054] The glass wool centrifugal fiberizing machine disclosed in the present invention also includes a stretching wind disc 5, which is arranged at the bottom of the combustion chamber 4 and is arranged around the outer peripheral side of the disc body 211. The interior of the stretching wind disc 5 is provided with a wind cavity for introducing high-pressure air, and the stretching wind disc 5 is provided with at least one stretching air port 51 on the side facing the disc body 211. According to this arrangement, the high-pressure air inside the air cavity is blown out from the stretching air port 51 and contacts the formed glass fiber filaments to straighten the glass fiber filaments. The stretching air port 51 is arranged obliquely downward. After the glass fiber filaments are formed, they move to the outer side and lower side of the disc body 211 under the action of their own gravity. At this time, the stretching air port 51 is directly opposite to the glass fiber filaments, thereby effectively straightening the glass fiber filaments.

[0055] The bottom of the stretching air disc 5 is also provided with a cutting air disc 6 surrounding the outer peripheral side of the disc body 211, and the cutting air disc 6 is provided with a cutting air port 61 inclined downwardly on one side of the disc body 211. By introducing high-pressure air into the cutting air disc 6 and passing through the inclined cutting air port 61, the glass fiber filaments can be cut.

[0056] In this embodiment, the angle between the stretching vent 51 and the vertical direction is greater than 5 degrees and less than or equal to 45 degrees, and the angle between the cutting vent 61 and the stretching vent is set correspondingly, and the corresponding setting method is as follows: if the angle of the cutting vent 61 is 45 degrees, then the angle of the stretching vent 51 is 45 degrees, and if the angle of the cutting vent 61 is 25 degrees, then the offset angle of the stretching vent 51 is 23 degrees. This structure cuts and stretches together, and the cutting and pulling integrated design makes the fiber fineness stretching uniform, and the fiber length pulling and cutting are easier to adjust, which can improve the disadvantage of different fiber lengths. In combination with the above-mentioned flame tilting method, the cutting and pulling effects are better.

[0057] As some optional embodiments, a plurality of bearings S are arranged between the cylinder 212 and the internal combustion tube body 32 at intervals along the vertical direction. Thus, by setting the bearings S, it is ensured that the internal combustion tube body 32 is coaxially arranged in the centrifuge 21, and the internal combustion tube body 32 and the centrifuge 21 can rotate relative to each other, thereby preventing the lower end of the internal combustion tube body 32 from swinging in the centrifuge 21, thereby improving the reliability of the centrifugal fiberizing machine during operation. At least one dynamic seal M is also arranged between the cylinder 212 and the internal combustion tube body 32. By setting the dynamic seal M, it is possible to prevent the natural gas in the centrifugal chamber 2110 from leaking upward through the gap between the cylinder 212 and the internal combustion tube body 32.

[0058] In this embodiment, a funnel 323 for receiving the glass liquid flow is fixedly provided at the top of the internal combustion tube body 32 . Thus, when the glass liquid flow falls vertically, it can be received and guided by the funnel 323 .

[0059] As some optional embodiments, there is a first guide portion D1 between the inner bottom surface and the inner side wall of the centrifugal chamber 2110. With this arrangement, during the centrifugal process of the glass liquid in the centrifugal chamber 2110, it can smoothly pass through the first guide portion D1 to the inner side wall of the centrifugal chamber 2110, so as to avoid the glass liquid being blocked at the corner between the inner bottom surface and the inner side wall of the centrifugal chamber 2110, and also avoid the glass liquid gathering at the above corner. There is a second guide portion D2 between the inner top surface and the inner side wall of the centrifugal chamber 2110, so that the glass liquid film on the inner side of the centrifugal chamber 2110 can climb to the inner top surface of the centrifugal chamber 2110 through the second guide portion D2 when climbing upward, and fall into the centrifugal chamber 2110 under the action of gravity, so as to avoid gathering at the corner between the inner top surface and the inner side wall of the centrifugal chamber 2110.

[0060] In this embodiment, the cross-sectional shape of the glass liquid spray hole 2111 is a truncated cone structure, and the outer diameter of the glass liquid spray hole 2111 is smaller than the inner diameter. In this way, after the glass liquid passes through the glass liquid spray hole 2111 of the above structure, the diameter of the glass fiber thrown out is thinner.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A glass wool centrifugal fiberizing machine, characterized in that: include: Rack (1); A centrifugal assembly (2), the centrifugal assembly (2) comprising a centrifuge (21) and a driving device (22), the centrifuge (21) comprising a disc (211) and a barrel (212), the barrel (212) being vertically fixedly arranged at the center of the top surface of the disc (211), the disc (211) having a centrifugal chamber (2110) in communication with the inner cavity of the barrel (212), the side wall of the disc (211) being provided with a plurality of glass liquid spray holes (2111) in communication with the centrifugal chamber (2110), the barrel (212) being vertically rotatably arranged on a frame (1), the driving device (22) being fixedly arranged on the frame (1) and being used for driving the centrifuge (21) to rotate; An internal combustion assembly (3) comprises a fixing frame (31) and an internal combustion tube body (32), wherein the internal combustion tube body (32) is coaxially inserted into a cylinder body (212), the internal combustion tube body (32) and the cylinder body (212) are clearance-matched, the upper end of the internal combustion tube body (32) is fixedly connected to the frame (1) through the fixing frame (31), the lower end of the internal combustion tube body (32) extends into the centrifugal chamber (2110), an air intake chamber (321) connected to the centrifugal chamber (2110) is provided in the tube wall of the internal combustion tube body (32) along its axial direction, and an air intake port (322) connected to the air intake chamber (321) is provided on the upper side wall of the internal combustion tube body (32); The air intake chamber (321) is arranged around the wall of the internal combustion tube body (32); A first air guide cover (33) is fixedly arranged at the lower end of the internal combustion tube body (32); the first air guide cover (33) is located in the centrifugal chamber (2110); the upper end of the first air guide cover (33) is communicated with the inner cavity of the internal combustion tube body (32); the lower end diameter of the first air guide cover (33) is larger than the upper end diameter of the first air guide cover (33); a first air guide chamber (331) communicated with the air inlet chamber (321) is arranged around the cover wall of the first air guide cover (33); and a plurality of first air outlet holes (3311) communicated with the first air guide chamber (331) are arranged on the bottom inner wall of the first air guide cover (33); The bottom end of the first air guide cover (33) is bent upwardly to form a second air guide cover (34); a second air guide chamber (341) connected to the first air guide chamber (331) is arranged around the cover wall of the second air guide cover (34); a plurality of second air outlet holes (3411) connected to the second air guide chamber (341) are arranged on the bottom inner wall of the second air guide cover (34); an angle α between the first air guide cover (33) and the horizontal direction is set to 0° to 45°, and an angle β between the second air guide cover (34) and the horizontal direction is set to 45° to 90°; The device also comprises a combustion chamber (4), the combustion chamber (4) being arranged around the top of the disc body (211) and being fixedly connected to the frame (1), the flame airflow nozzle (40) of the combustion chamber (4) comprising a first guide surface (401) close to the barrel body (212) and a second guide surface (402) away from the barrel body (212), the second guide surface (402) being inclined toward the glass liquid nozzle hole (2111), the first guide surface (401) being perpendicular to a horizontal plane, and the angle γ between the second guide surface (402) and the vertical direction being set to be 0.1° to 10°; A plurality of exhaust holes (2112) are provided on a side of the top surface of the disk body (211) close to the cylinder body (212); a flow guide cover (2113) is provided on the top surface of the disk body (211); a flow guide cavity (2114) connected to the exhaust holes (2112) is formed between the flow guide cover (2113) and the top surface of the disk body (211); and an air guide hole (2115) corresponding to the flame airflow nozzle (40) is provided on a side of the flow guide cavity (2114) away from the cylinder body (212); A first guide portion (D1) is provided between the inner bottom surface and the inner side wall of the centrifugal chamber (2110), a second guide portion (D2) is provided between the inner top surface and the inner side wall of the centrifugal chamber (2110), the cross-sectional shape of the glass liquid spray hole (2111) is a truncated cone structure, and the outer diameter of the glass liquid spray hole (2111) is smaller than the inner diameter.

2. The glass wool centrifugal fiberizing machine according to claim 1, characterized in that: The bottom of the combustion chamber (4) is also provided with a stretching wind disk (5) surrounding the outer peripheral side of the disk body (211); the interior of the stretching wind disk (5) is provided with a wind cavity for introducing high-pressure air; the stretching wind disk (5) is provided with at least one stretching wind port (51) on the side facing the disk body (211); the stretching wind port (51) is arranged obliquely downward; the bottom of the stretching wind disk (5) is also provided with a cut-off wind disk (6) surrounding the outer peripheral side of the disk body (211); the cut-off wind disk (6) is provided with a cut-off wind port (61) obliquely downward on the side facing the disk body (211).

3. The glass wool centrifugal fiberizing machine according to claim 1, characterized in that: A plurality of bearings (S) are arranged at intervals in the vertical direction between the cylinder (212) and the internal combustion tube (32), at least one dynamic seal (M) is also arranged between the cylinder (212) and the internal combustion tube (32), and a funnel (323) for receiving a flow of glass liquid is also fixedly arranged at the top of the internal combustion tube (32).

Images