A kiln for glass fiber production with multi-stage heating function

Abstract

The present invention discloses a kiln for glass fiber production with a multi-stage heating function, which relates to the technical field of kilns and comprises a kiln body; a mixing component for mixing powdered raw materials with a diluted binder to form a mixture; a granulating component for making the mixture into granules; a drying component for drying and preliminarily heating the prepared granules using the waste heat from the kiln exhaust; and a sintering component for sintering the dried granules to decompose the binder and simultaneously complete the secondary heating of the granules. The present invention provides a granulating component, and before adding the raw materials to the kiln body, the raw materials are mixed and granulated in the process, so that the raw materials exist in the kiln in the form of granules, thereby avoiding the situation where the powdered raw materials fly around when subjected to the impact of flames. In addition, there are larger gaps between the granular raw materials compared to the powder, and the flame can burn into the raw material particles through the gaps between the raw material particles, thereby improving the melting effect.

Description

Technical Field

[0001] The present invention relates to the technical field of kilns, and in particular to a kiln for producing glass fibers with a multi-stage heating function. Background Art

[0002] A kiln is an industrial equipment that processes materials through high-temperature calcination or melting processes. It is usually built with refractory materials (such as high-alumina bricks, chrome bricks, etc.) and is widely used in ceramics, glass, cement, metal processing and other fields. Its main function is to complete the physical and chemical reactions of materials (such as melting, sintering, clarification, etc.) by controlling the temperature, atmosphere and pressure curve, and ultimately form products with specific properties.

[0003] Glass fiber is an inorganic non-metallic material with excellent performance. Its production process uses silicon dioxide, aluminum oxide, calcium oxide, magnesium oxide, alkali metal oxides, boron oxide, and other additives as raw materials and is made through high-temperature melting, drawing, winding, weaving and other processes. Among them, among the raw materials of glass fiber, silicon dioxide (silica sand), aluminum oxide (bauxite or calcined alumina), calcium oxide (limestone), magnesium oxide (dolomite), alkali metal oxides (soda ash or potash), boron oxide (boric acid or borax) and other additives such as clarifiers (sulfates) are usually in powder form. In particular, the mineral raw materials need to be crushed to a certain fineness for uniform mixing and melting.

[0004] The kiln needs to use flames to spray raw materials to melt them. The flame itself has a certain airflow impact, which causes powder to fly when it acts directly on the raw materials, resulting in the escape of raw materials (such as alkali metal oxides, borides, etc.) from the kiln, causing the loss of effective ingredients, destroying the preset chemical ratio, and affecting the physical properties of the glass fiber (such as strength and heat resistance); secondly, the raised powder may be deposited on the upper part of the kiln (such as the vault, flue), forming nodules or blockages, reducing thermal efficiency and increasing maintenance costs, and being discharged with the exhaust gas, resulting in particulate pollution; thirdly, if the raised powder is not completely melted, it may form unmelted particles, streaks or bubbles, affecting the uniformity and mechanical properties of the glass fiber; finally, the gaps between powdered raw materials are smaller, so the flame can only directly act on the surface raw materials, and the molten liquid produced after the surface raw materials are melted will coat the inner raw materials, thereby affecting the melting effect. Summary of the Invention

[0005] The object of the present invention is to provide a kiln for glass fiber production with a multi-stage heating function to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A kiln for producing glass fiber with a multi-stage heating function comprises a kiln body; further comprising: a mixing component for mixing powdered raw materials with a diluted binder to form a mixture; a granulating component arranged below the mixing component for forming the mixture into granules; a drying component for utilizing the waste heat of the kiln body exhaust to dry and preliminarily heat the prepared granules; a sintering component for sintering the dried granules to decompose the binder and simultaneously complete the secondary heating of the granules; the mixing component comprises a mixing tank, the top of the inner wall of the mixing tank is rotatably connected to a hollow shaft, the outside of the hollow shaft is fixedly connected to a rotating rack, mixing motors are symmetrically fixedly installed at both ends of the rotating rack, the output ends of the mixing motors are fixedly connected to spiral stirring rods, the top of the mixing tank is fixedly connected to a transmission box, the top of the mixing tank is fixedly installed with a drive motor, the output end of the drive motor extends to the interior of the transmission box and is fixedly connected to a first bevel gear, the outer wall of the hollow shaft is fixedly connected to a second bevel gear, and the second bevel gear is meshed with the first bevel gear.

[0008] By adopting the above technical solution, a granulating component is set up. Before the raw materials are added to the kiln body, the raw materials are first mixed and granulated in the process, so that the raw materials exist in the kiln in the form of particles, thereby avoiding the situation where the powdered raw materials fly around when hit by flames. In addition, there are larger gaps between the granular raw materials than between the powders, which avoids the situation where only the peripheral raw materials can be melted first during the combustion of the powdered raw materials, resulting in clumping. At the same time, the flame can burn into the inside through the gaps between the raw material particles, thereby improving the melting effect.

[0009] A further improvement of the technical solution of the present invention is that: the mixing component also includes a dilution tank, the dilution tank is fixedly connected to the top of the inner wall of the mixing tank, a filling port is provided on the top of the dilution tank, the top of the hollow shaft passes through the top of the transmission box and is fixedly connected to a rotary joint, a nozzle is installed at the bottom end of the hollow shaft, the hollow shaft passes through the dilution tank and is rotatably connected to the dilution tank, a stirring blade is fixedly connected to the outer wall of the hollow shaft and located inside the dilution tank, a feeding structure for regularly extracting binder from the dilution tank to the mixing tank is provided on the top of the mixing tank, and a discharge pipe with an electric valve is provided at the lower end of the mixing tank; the two spiral stirring rods have different lengths.

[0010] By adopting the above technical solution, a dilution tank is provided to dilute the binder in advance, and then the diluted binder is sprayed into the powder raw material regularly using the feeding structure, thereby reducing the occurrence of clumping.

[0011] The cam is fixedly mounted on the top of the mixing tank, and the cam is connected to the first piston plate at the bottom of the inner wall of the metering cylinder, and the second piston plate is connected to the second piston plate at the upper end of the inner wall of the metering cylinder. A linkage rod is fixedly connected between the first piston plate and the second piston plate, and a strip groove is provided in the middle position of the metering cylinder. A tension spring is fixedly connected between the bottom of the first piston plate and the bottom of the inner wall of the metering cylinder. The upper end of the metering cylinder is fixedly connected to the valve body, and a release tube is provided on the side of the valve body away from the metering cylinder. A spherical valve core is rotatably connected between the inner walls of the valve body, a through hole is provided in the middle position of the valve core, and the central axis of the valve core extends to the outside of the valve body and is fixedly connected to the transmission gear, the outer wall of the metering cylinder is fixedly connected to the slide rail, and the outer wall of the slide rail is slidably connected to the slider, and one side of the slider is fixedly connected to the rack, which is meshed with the transmission gear; the side wall of the linkage rod is fixedly connected to the movable rod, and the movable rod is away from the linkage rod. The end extends to the outside of the metering cylinder through a strip groove and is fixedly connected to an L-shaped plate, and one side of the L-shaped plate is fixedly connected to two push plates; the top of the mixing tank is fixedly connected to a piston cylinder, and a third piston plate is slidably connected between the inner wall of the piston cylinder, and the piston cylinder is provided with an air inlet pipe and an air outlet pipe, and the air inlet pipe and the air outlet pipe are both provided with a one-way valve, and the end of the air inlet pipe away from the piston cylinder is connected to the upper end of the metering cylinder through a pipe; a liquid extraction hole is opened at the position of the hollow shaft located in the dilution tank, and the inside of the liquid extraction hole and the position of the hollow shaft near the nozzle are both provided with a one-way valve, one side of the transmission box is rotatably connected to a turntable, and the side wall of the turntable is rotatably connected to a rocker, the bottom of the rocker extends to the interior of the piston cylinder and is rotatably connected to the top of the third piston plate, the central axis of the turntable extends to the interior of the transmission box and is fixedly connected to a third bevel gear, the third bevel gear is meshed with the second bevel gear, and the lower end of the metering cylinder is communicated with the top of the rotary joint through a pipe.

[0012] By adopting the above technical solution, the hollow shaft is linked with the feeding structure, and the metering cylinder is used to accumulate energy (air pressure) during the mixing process. At the same time, the hollow shaft extracts the binder and releases it when a certain threshold is reached, so that the binder is sprayed from the nozzle into the mixing tank under the action of air pressure.

[0013] A further improvement of the technical solution of the present invention is that: a fixed plate is fixedly connected to the top of the mixing tank, a hanging pin is fixedly connected to one side of the fixed plate, two limit columns are fixedly connected to the fixed plate on the side where the hanging pin is located, the fixed plate is rotatably connected to the side where the hanging pin is located, a tension spring is suspended between the end of the rocker rod and the hanging pin, the rack part has no teeth, and a sliding sleeve is inserted through the part of the rack without teeth, the end of the rocker rod is fixedly connected to a sliding rod, the sliding rod passes through the sliding sleeve and is slidably connected to the inner wall of the sliding sleeve.

[0014] By adopting the above technical solution, a valve core auxiliary rotation structure is also designed based on the extrusion method of the adhesive, which can simultaneously drive the slide rod to move upward through the sliding sleeve during the movement of the rack, thereby causing the rocker arm to swing, wherein the hanging pin is on the central axis of the two limit columns. Before the rocker arm swings across the central axis of the two limit columns, the rocker arm is subject to a certain resistance to the push by the tension spring. When the rocker arm swings across the position of the central axis of the two limit columns, the elastic force direction of the tension spring suddenly changes to the direction of pulling the rocker arm to swing upward, thereby causing the rocker arm to swing upward quickly, and driving the rack to move upward quickly through the sliding rod, thereby driving the transmission gear to rotate quickly, so that the valve core can be quickly rotated to a state where it is completely opposite to the release tube, so that the air pressure on the upper part of the metering cylinder can be quickly released, while avoiding the problem of slow reset speed of the first piston plate.

[0015] A further improvement of the technical solution of the present invention is that the granulating component comprises a granulator, an output end of the granulator is provided with a template, and a cross-shaped die hole is opened on the template.

[0016] By adopting the above technical solution, a cross-shaped die hole is set, so that the end face of the particles is a cross-shaped columnar structure when extruded. The gaps between them after irregular stacking are larger, making it easier for the flame to penetrate into the interior through the gaps between the particles, thereby improving the combustion efficiency.

[0017] A further improvement of the technical solution of the present invention is that: the drying component includes a support frame and a heat exchanger, one side of the inner wall of the support frame is fixedly connected to a wheel core, the inner wall of the support frame is rotatably connected to the wheel frame on the side opposite to the wheel core, the wheel core is slidingly connected to the inner wall of the wheel frame, the two bottom surfaces of the wheel frame are arranged as a filter structure, a plurality of partitions are fixedly connected to the inner side of the wheel frame, the partitions are arranged in a ring shape inside the wheel frame, a feeding motor is fixedly installed on one side of the support frame, the output end of the feeding motor is fixedly connected to the central axis of the wheel frame, two fixing rings are symmetrically fixedly connected to the top of the support frame, the inner side of the fixing ring is fixedly connected to an air outlet pipe, the heat exchanger is connected to the air outlet pipe through a pipe, and is connected to the exhaust port of the kiln body through a pipe; the top of the wheel core is fixedly connected to a discharge port, and one side of the wheel core is fixedly connected to a discharge pipe connected to the discharge port; the discharge pipe is connected to the input end of the sintering component, and the output end of the sintering component is connected to the feeding port of the kiln body through an external feeder.

[0018] The above technical solution is adopted, by setting a relatively rotatable wheel frame, and setting a partition on the inner side of the wheel frame to divide the interior of the wheel frame into chambers of the same size, the wheel seat is in contact with the inner wall of the wheel frame at a position of two-thirds of the arc length, so that when the wheel frame rotates to the position of contact with the wheel seat, the particles in the corresponding chamber cannot fall out; specifically, by controlling the operation of the feeding motor, the wheel frame is driven to rotate, and the particles are transported along with the rotation of the wheel frame until they are transported to the top of the wheel seat. At this time, the particles fall into the discharge port and fall into the sintering component through the discharge pipe, wherein the sintering component is a rotary kiln, which can sinter the particles. The sintering temperature is higher than the drying temperature and lower than the temperature inside the kiln. On the one hand, it can decompose the binder, and on the other hand, it can perform a second stage heating on the raw materials to avoid cracking and generating powder of the raw materials during the sintering process. wherein, the rotary kiln can be partially provided with a heat source by recovering the waste heat of the kiln, and a compensating heating structure is additionally provided inside it to ensure that the temperature reaches the sintering temperature.

[0019] A further improvement of the technical solution of the present invention is that: a plurality of fixed sleeves are connected through the side wall of the wheel frame, the inner walls of the fixed sleeves are slidably connected with a pressure rod, one end of the pressure rod is fixedly connected with a hemispherical pressure head, the end of the pressure rod away from the pressure head extends to the inside of the wheel frame, a spiral groove is provided on the outer wall of the pressure rod, a transmission buckle is fixedly connected to the inner side of the fixed sleeve, the transmission buckle is slidably connected to the spiral groove, a spring is sleeved on the outside of the pressure rod and located between the sliding sleeve and the pressure head, a plurality of trigger rods are fixedly connected between the sides where the two fixed rings are close to each other, and the side wall of the pressure rod is located inside the wheel frame and is fixedly connected with a turning rod.

[0020] By adopting the above technical solution, a pressure rod that can move synchronously in the axial direction and the circumferential direction is provided, and cooperates with the turning rod to make the raw material drying process more uniform; specifically, during the rotation of the wheel frame, the pressure head intermittently contacts and cooperates with the trigger rod for compression, and under the extrusion action, the pressure rod moves axially, squeezing the spring, and at the same time, the spiral groove and the transmission buckle are coordinated with the axial movement of the pressure rod to make the pressure rod rotate circumferentially at the same time, so that the turning rod turns the raw material particles; after the pressure head passes the pressure rod, the pressure head is reset under the action of the spring rebound.

[0021] A further improvement of the technical solution of the present invention is that the interior of the wheel core is set as a hollow structure, the bottom of the discharge port is provided with filter holes, and the bottom of the wheel core is provided with a dust exhaust pipe.

[0022] With the above technical solution, during the drying process, there are some small-sized debris. The debris enters the discharge port along with the particles and is screened. The small-sized debris falls into the wheel core through the filter hole and is discharged from the dust exhaust pipe, while the large particles are sent out through the discharge pipe.

[0023] A further improvement of the technical solution of the present invention is that the binder is silica sol.

[0024] In the above technical solution, since a binder is required, silica sol is selected as the binder to reduce the influence of the binder on the raw material components. The silica sol is decomposed into silicon dioxide by high temperature without any harmful residue.

[0025] Due to the adoption of the above technical solution, the present invention has the following technical advancements compared to the prior art:

[0026] 1. The present invention provides a granulating component to mix and granulate the raw materials before adding them to the kiln body. This allows the raw materials to be present in the kiln in the form of particles, thereby preventing the powdered raw materials from scattering when impacted by flames. In addition, there are larger gaps between the granular raw materials than between the powdered raw materials, thus preventing the powdered raw materials from only melting the peripheral raw materials first during combustion, resulting in clumping. At the same time, the flame can pass through the gaps between the raw material particles and burn into the inside, thereby improving the melting effect.

[0027] 2. The present invention provides a dilution tank to dilute the binder first and then feed it into the mixing tank in multiple times, thereby reducing the occurrence of clumping. The hollow shaft is linked to the feeding structure. During the mixing process, the metering cylinder accumulates energy (air pressure). At the same time, the hollow shaft extracts the binder and releases it when a certain threshold is reached. The binder is then sprayed from the nozzle into the mixing tank under the action of air pressure, thereby achieving regular dosing of the binder.

[0028] 3. Based on the extrusion method of the adhesive, the present invention also designs a valve core auxiliary rotation structure, which can simultaneously drive the slide rod to move upward through the sliding sleeve during the movement of the rack, thereby causing the rocker arm to swing, wherein the hanging pin is located on the central axis of the two limit posts. Before the rocker arm swings past the central axis of the two limit posts, the rocker arm is subject to a certain degree of resistance to the push by the tension spring. When the rocker arm swings past the position of the central axis of the two limit posts, the elastic force direction of the tension spring suddenly changes to the direction of pulling the rocker arm to swing upward, thereby causing the rocker arm to swing upward rapidly, and driving the rack to move upward rapidly through the sliding rod, thereby driving the transmission gear to rotate rapidly, so that the valve core can be quickly rotated to a state where it is completely opposite to the release tube, so that the air pressure on the upper part of the metering cylinder can be quickly released, while avoiding the problem of slow reset speed of the first piston plate;

[0029] 4. The present invention provides a cross-shaped die hole, so that the end surface of the particles is a cross-shaped columnar structure when extruded. The gaps between the particles after irregular stacking are larger, making it easier for the flame to penetrate into the interior through the gaps between the particles, thereby improving the combustion efficiency.

[0030] 5. The present invention provides a drying component to utilize the waste heat of the kiln for drying during the feeding process, thereby improving energy utilization and being able to preliminarily heat the particles at a lower temperature; and provides a sintering component to decompose the binder at a temperature that can decompose the binder, while sintering and shaping the particles, and performing secondary heating on the particles. After sintering is completed, the particles are put into the kiln, so that the raw materials themselves have a certain temperature after entering the kiln, reducing the problem of cracking and dust generation during high-temperature baking, and shortening the heating time inside the kiln, thereby extending the service life of the kiln. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be further described below with reference to the accompanying drawings.

[0032] Figure 1 This is one of the schematic structural diagrams of the present invention as a whole;

[0033] Figure 2 This is the second schematic diagram of the overall structure of the present invention;

[0034] Figure 3 This is a schematic diagram of the installation structure of the mixing component, granulating component, drying component and sintering component of the present invention;

[0035] Figure 4 It is a structural schematic diagram of the drying component of the present invention;

[0036] Figure 5 It is a schematic structural diagram of the mixing component and the granulating component of the present invention;

[0037] Figure 6 This is one of the cross-sectional structural diagrams of the mixing component of the present invention;

[0038] Figure 7 This is the second schematic cross-sectional view of the mixing component of the present invention;

[0039] Figure 8 Schematic diagram of the installation structure of the pressure rod and the fixing sleeve of the present invention;

[0040] Figure 9 It is a structural schematic diagram of the template of the present invention;

[0041] Figure 10 This is a schematic diagram of the split structure of the wheel core and the wheel frame of the present invention;

[0042] Figure 11 Schematic diagram of the structure of the wheel core of the present invention;

[0043] Figure 12 For the present invention Figure 6 Enlarged view of point A in the middle;

[0044] Figure 13 For the present invention Figure 7Enlarged view of point B in the middle.

[0045] In the figure: 1. Kiln body; 2. Granulating part; 3. Mixing tank; 4. Sintering part; 5. Wheel frame; 6. Heat exchanger; 8. Dilution tank; 9. Hollow shaft; 10. Nozzle; 11. Rotating frame; 12. Mixing motor; 13. Spiral stirring rod; 14. Stirring blade; 15. Transmission box; 16. Drive motor; 17. First bevel gear; 18. Second bevel gear; 19. Third bevel gear; 20. Turntable; 21. Rocker; 22. Piston cylinder; 23. Third piston plate; 24. Measuring cylinder; 25. Valve body; 26. Slide rail; 27. Slider; 28. Rack; 29. ​​First piston plate; 30. Second piston plate; 31. Linkage rod; 32. Strip groove; 33. Movable rod; 34. L-shaped plate; 35. Push plate; 36. Sliding sleeve; 37. Sliding rod; 38. Inlet pipe; 39. Fixed plate; 40. Hanging pin; 41. Rocker arm; 43. Limiting column; 44. Transmission gear; 45. Exhaust pipe; 46. Rotary joint; 48. Valve core; 49. Template; 50. Die hole; 51. Liquid extraction hole; 52. Support frame; 53. Wheel core; 55. Feeding motor; 56. Partition; 57. Press rod; 58. Turning rod; 59. Fixed sleeve; 60. Press head; 61. Trigger rod; 62. Transmission buckle; 63. Spiral groove; 64. Discharge port; 65. Dust exhaust pipe; 66. Air outlet pipe; 67. Discharge pipe; 68. Fixed ring. DETAILED DESCRIPTION

[0046] The present invention is described in further detail below in conjunction with the embodiments: Example 1

[0047] like Figure 1 - Figure 13 As shown, the present invention provides a kiln for glass fiber production with a multi-stage heating function, comprising a kiln body 1; further comprising: a mixing component for mixing a powdered raw material with a diluted binder to form a mixture; a granulating component 2, arranged below the mixing component, for forming the mixture into granules; a drying component for utilizing the waste heat of the exhaust gas of the kiln body 1 to dry and preliminarily heat the prepared granules; and a sintering component 4 for sintering the dried granules to decompose the binder and simultaneously complete the secondary heating of the granules.

[0048] In this embodiment, by providing a granulating component 2, the raw materials are first mixed and granulated in the process before being added to the kiln body 1, so that the raw materials exist in the kiln in the form of particles, thereby avoiding the situation where the powdered raw materials fly around when subjected to flame impact. In addition, there are larger gaps between the granular raw materials than between the powders, which avoids the situation where only the peripheral raw materials can be melted first during the combustion of the powdered raw materials, resulting in clumping. At the same time, the flame can burn into the inside through the gaps between the raw material particles, thereby improving the melting effect. Example 2

[0049] like Figure 5 、 Figure 6 and Figure 7 As shown, on the basis of Example 1, the present invention provides a technical solution: preferably, the mixing component includes a mixing tank 3, the top of the inner wall of the mixing tank 3 is rotatably connected to the hollow shaft 9, the outside of the hollow shaft 9 is fixedly connected to the rotating frame 11, and the two ends of the rotating frame 11 are symmetrically fixedly installed with a mixing motor 12, the output ends of the mixing motor 12 are fixedly connected to spiral stirring rods 13, and the lengths of the two spiral stirring rods 13 are different; the top of the mixing tank 3 is fixedly connected to a transmission box 15, the top of the hollow shaft 9 passes through the top of the transmission box 15 and is fixedly connected to a rotary joint 46, the bottom end of the hollow shaft 9 is installed with a nozzle 10, the top of the mixing tank 3 is fixedly installed with a driving motor 16, the output end of the driving motor 16 extends to the inside of the transmission box 15 and is fixedly connected to a first bevel gear 17, the outer wall of the hollow shaft 9 is fixedly connected to a second bevel gear 18, and the second bevel gear 18 is meshed with the first bevel gear 17;

[0050] The top of the inner wall of the mixing tank 3 is fixedly connected to the dilution tank 8, and a filling port is provided on the top of the dilution tank 8. The hollow shaft 9 passes through the dilution tank 8 and is rotatably connected to the dilution tank 8. The outer wall of the hollow shaft 9 and the interior of the dilution tank 8 are fixedly connected with a stirring blade 14. The top of the mixing tank 3 is provided with a feeding structure for regularly extracting binder from the dilution tank 8 to the mixing tank 3, and the lower end of the mixing tank 3 is provided with a discharge pipe with an electric valve.

[0051] In the above technical solution, the powdered raw materials need to be extruded and granulated. However, it is difficult to form stable granules by simply extruding the powder. In the actual process, a binder is usually required. However, due to its concentration limit, it is difficult to evenly distribute the binder between the powders during actual operation, and it is easy to cause agglomeration.

[0052] In this embodiment, a dilution tank 8 is provided to first dilute the binder and then regularly spray it into the powder raw material, thereby reducing the occurrence of clumping. Specifically, the powdered raw material is added through the feeding hopper on the top of the mixing tank 3, and the binder and water are added to the dilution tank 8 through the filling port for dilution. The driving motor 16 is controlled to work, driving the first bevel gear 17 to rotate, and the second bevel gear 18 and the third bevel gear 19 to rotate in sequence through engagement, wherein the rotation of the second bevel gear 18 drives the hollow shaft 9 to rotate, thereby rotating the rotating rack 11, and at the same time controlling the mixing motor 12 to work, driving the two spiral stirring rods 13 to rotate, thereby pre-mixing the powder material inside the mixing tank 3. At the same time, after water and binder are added to the dilution tank 8, the mixing (dilution) is completed as the stirring blade 14 rotates. During the powder mixing process, the diluted binder in the dilution tank 8 is regularly extracted through the feeding structure and sprayed from the nozzle 10 to the mixing tank 3 for mixing;

[0053] Among them, after the binder is diluted, its viscosity is reduced, and the nozzle 10 is set as an atomizing nozzle 10, so that the binder can more easily penetrate into the powder after being sprayed out, greatly reducing the occurrence of clumping during mixing with the powder raw material.

[0054] like Figure 6 、 Figure 7 、 Figure 12 and Figure 13 As shown, the feeding structure includes a metering cylinder 24 fixedly connected to the top of the mixing tank 3, a first piston plate 29 is slidably connected to the lower part of the inner wall of the metering cylinder 24, a second piston plate 30 is slidably connected to the upper part of the inner wall of the metering cylinder 24, a linkage rod 31 is fixedly connected between the first piston plate 29 and the second piston plate 30, a strip groove 32 is provided in the middle position of the metering cylinder 24, a tension spring is fixedly connected between the bottom of the first piston plate 29 and the bottom of the inner wall of the metering cylinder 24, a valve body 25 is fixedly connected to the upper end of the metering cylinder 24, a release tube is provided on the side of the valve body 25 away from the metering cylinder 24, and the inner walls of the valve body 25 are rotatably connected. There is a spherical valve core 48 with a through hole in the middle of the valve core 48. The central axis of the valve core 48 extends to the outside of the valve body 25 and is fixedly connected to the transmission gear 44. The outer wall of the metering cylinder 24 is fixedly connected to the slide rail 26. The outer wall of the slide rail 26 is slidably connected to the slider 27. One side of the slider 27 is fixedly connected to the rack 28, and the rack 28 is meshed with the transmission gear 44. The side wall of the linkage rod 31 is fixedly connected to the movable rod 33. The end of the movable rod 33 away from the linkage rod 31 extends to the outside of the metering cylinder 24 through the strip groove 32 and is fixedly connected to the L-shaped plate 34. One side of the L-shaped plate 34 is fixedly connected to two push plates 35.

[0055] The top of the mixing tank 3 is fixedly connected to the piston cylinder 22, and the inner wall of the piston cylinder 22 is slidably connected to the third piston plate 23. The piston cylinder 22 is provided with an air inlet pipe 38 and an air outlet pipe 45. The inside of the air inlet pipe 38 and the air outlet pipe 45 are both provided with a one-way valve. The end of the air inlet pipe 38 away from the piston cylinder 22 is connected to the upper end of the metering cylinder 24 through a pipeline; the hollow shaft 9 is located in the dilution tank 8. A liquid extraction hole 51 is opened, and the inside of the liquid extraction hole 51 and the part of the hollow shaft 9 near the nozzle 10 are A one-way valve is provided, and a turntable 20 is rotatably connected to one side of the transmission box 15. A rocker 21 is rotatably connected to the side wall of the turntable 20 at a position off-center. The bottom of the rocker 21 extends to the interior of the piston cylinder 22 and is rotatably connected to the top of the third piston plate 23. The central axis of the turntable 20 extends to the interior of the transmission box 15 and is fixedly connected to the third bevel gear 19. The third bevel gear 19 is meshed with the second bevel gear 18. The lower end of the metering cylinder 24 is connected to the top of the rotary joint 46 through a pipe.

[0056] In order to achieve the above-mentioned function of taking the adhesive at a fixed time, this embodiment is provided with a feeding structure linked with the hollow shaft 9, so that the adhesive can be sprayed synchronously according to the degree of mixing in the mixing tank 3 (the number of rotations of the hollow shaft 9);

[0057] When the third piston plate 23 moves upward, negative pressure is generated inside the piston cylinder 22. At this time, the one-way valve in the air inlet pipe 38 is opened, and the one-way valve in the air outlet tank is blocked. The piston cylinder 22 draws air to the upper part of the metering cylinder 24 through the air inlet pipe 38, so that the second piston plate 30 moves upward and drives the first piston plate 29 to move upward through the linkage rod 31. The tension spring begins to extend and accumulates potential energy. During the upward process of the first piston plate 29, air is drawn into the hollow shaft 9 through the pipeline and the rotary joint 46. At this time, the one-way valve inside the hollow shaft 9 is blocked and the one-way valve inside the liquid extraction hole 51 is opened, and the hollow shaft 9 extracts adhesive to the dilution tank 8 through the liquid extraction hole 51.

[0058] During the upward movement of the linkage rod 31, the movable rod 33 and the L-shaped plate 34 are synchronously driven to move upward, and the push plate 35 is driven to move upward. After the push plate 35 at the bottom contacts the slider 27, the above-mentioned movement continues to lift the slider 27 and drive the rack 28 to move upward, thereby driving the transmission gear 44 to rotate. The valve core 48 rotates accordingly until both ends of the through hole correspond to the release tube and the inside of the metering cylinder 24 at the same time, so that the pressure on the upper part of the metering cylinder 24 is released. At this time, the first piston plate 29 moves downward under the rebound action of the tension spring and drives the second piston plate 30 to move downward through the linkage rod 31. The downward movement of the first piston plate 29 squeezes air into the hollow shaft 9, thereby squeezing out the adhesive accumulated inside the hollow shaft 9 downward (the one-way valve in the liquid extraction hole 51 is blocked during this process), and sprayed from the nozzle 10 into the mixing tank 3;

[0059] As the above-mentioned linkage rod 31 is reset, the movable rod 33 and the L-shaped plate 34 are synchronously driven to reset, and when the push plate 35 located above contacts and presses down the slider 27, the slider 27 is driven to move downward, so that the rack 28 moves downward and drives the transmission gear 44 and the valve core 48 to rotate until the through hole no longer faces the release tube and the inside of the metering cylinder 24 at the same time, achieving blockage, so that the upper part of the metering cylinder 24 is no longer connected to the external environment, and the metering cylinder 24 can store energy again. Example 3

[0060] like Figure 7 、 Figure 12 and Figure 13 As shown, on the basis of Example 2, the present invention provides a technical solution: preferably, a fixing plate 39 is fixedly connected to the top of the mixing tank 3, a hanging pin 40 is fixedly connected to one side of the fixing plate 39, and the fixing plate 39 is fixedly connected to two limit columns 43 on the side where the hanging pin 40 is located, and the fixing plate 39 is rotatably connected to the side where the hanging pin 40 is located with a rocker arm 41, a tension spring is suspended between the end of the rocker arm 41 and the hanging pin 40, the rack 28 part has no teeth, and the part of the rack 28 without teeth is penetrated and inserted with a sliding sleeve 36, the end of the rocker arm 41 is fixedly connected to a sliding rod 37, the sliding rod 37 penetrates the sliding sleeve 36 and is slidably connected to the inner wall of the sliding sleeve 36.

[0061] Since in the above technical solution, it is necessary to use the linkage rod 31 to move and drive the valve core 48 to rotate to achieve conduction and blocking, but in order to control the speed of adhesive extrusion, the size of the piston cylinder 22 needs to be limited (cross-sectional area), so that the two spiral stirring rods 13 can rotate more times during the mixing process before releasing the adhesive, avoiding the problem of excessive release frequency. However, the conduction of the valve core 48 needs to be driven by the above-mentioned air pressure. If the air pressure accumulation is too slow, the valve core 48 will be slowly and slightly conducted. In this state, the internal pressure of the metering cylinder 24 can only be released slowly, thereby affecting the reset speed of the first piston plate 29 and directly slowing down the extrusion speed of the adhesive.

[0062] In this embodiment, based on the extrusion method of the adhesive, a valve core 48 auxiliary rotation structure is also designed, which can simultaneously drive the slide rod 37 to move upward through the slide sleeve 36 during the movement of the rack 28, thereby causing the rocker arm 41 to swing, wherein the hanging pin 40 is on the central axis of the two limit columns 43. Before the rocker arm 41 swings past the central axis of the two limit columns 43, the rocker arm 41 is subjected to a certain resistance to the push by the tension spring. When the rocker arm 41 swings past the position of the central axis of the two limit columns 43, the elastic force direction of the tension spring suddenly changes to the direction of pulling the rocker arm 41 to swing upward, thereby causing the rocker arm 41 to swing upward quickly, and drive the rack 28 to move upward quickly through the slide rod 37, thereby driving the transmission gear 44 to rotate quickly, so that the valve core 48 can rotate quickly to a state where it is completely opposite to the release tube, so that the air pressure on the upper part of the metering cylinder 24 can be quickly released, while avoiding the problem of slow reset speed of the first piston plate 29. Example 4

[0063] like Figure 5 and Figure 9 As shown, based on Example 3, the present invention provides a technical solution: preferably, the granulating component 2 includes a granulator, and a template 49 is provided at the output end of the granulator, and a cross-shaped die hole 50 is opened on the template 49.

[0064] The solution requires granulating the powdered raw materials first. However, the granules formed by traditional granulators are usually regular cylinders or spheres. The gaps between them are small, and the flame cannot penetrate the surface of the raw materials into the interior, resulting in uneven heating.

[0065] In this embodiment, by setting a cross-shaped die hole 50, the end face of the particles is a cross-shaped columnar structure when extruded. After irregular stacking, the gaps between them are larger, making it easier for the flame to penetrate into the interior through the gaps between the particles, thereby improving the combustion efficiency. Example 5

[0066] like Figure 4 、 Figure 10 and Figure 11As shown, based on Example 4, the present invention provides a technical solution: preferably, the drying component includes a support frame 52 and a heat exchanger 6, one side of the inner wall of the support frame 52 is fixedly connected to a wheel core 53, the inner wall of the support frame 52 is rotatably connected to the side opposite to the wheel core 53 with a wheel frame 5, the wheel core 53 is slidably connected to the inner wall of the wheel frame 5, the two bottom surfaces of the wheel frame 5 are both set as filter structures, the inner side of the wheel frame 5 is fixedly connected to a plurality of partitions 56, the partitions 56 are arranged in a ring shape inside the wheel frame 5, and a feeding motor 55 is fixedly installed on one side of the support frame 52. The feeding motor 55 The output end is fixedly connected to the central axis of the wheel frame 5, and two fixing rings 68 are symmetrically fixedly connected to the top of the support frame 52. The inner side of the fixing ring 68 is fixedly connected to the air outlet pipe 66. The heat exchanger 6 is connected to the air outlet pipe 66 through a pipeline, and is connected to the exhaust port of the kiln body 1 through a pipeline; the top of the wheel core 53 is fixedly connected to the discharge port 64, and one side of the wheel core 53 is fixedly connected to a discharge pipe 67 connected to the discharge port 64; the discharge pipe 67 is connected to the input end of the sintering component 4, and the output end of the sintering component 4 is connected to the feeding port of the kiln body 1 through an external feeder.

[0067] In the above technical solution, the raw materials just after extrusion granulation have a low degree of adhesion and are easily dispersed after being disturbed. To ensure the efficiency of granulation processing while reducing damage to the granules, a drying line is a more suitable drying method. It can dry the granules during transportation and can reduce damage to the granules. However, some unbonded fine particles still exist after granulation. Using a traditional drying line can easily cause dust to fly everywhere, thus affecting the working environment.

[0068] By setting a relatively rotatable wheel frame 5 and setting a partition 56 on the inner side of the wheel frame 5 to divide the interior of the wheel frame 5 into chambers of the same size, the wheel seat contacts the position of two-thirds of the arc length of the inner wall of the wheel frame 5, so that when the wheel frame 5 rotates to the position of contact with the wheel seat, the particles in the corresponding chamber cannot fall out; specifically, by controlling the operation of the feeding motor 55, the wheel frame 5 is driven to rotate, and the particles are transported along with the rotation of the wheel frame 5 until they are transported to the top of the wheel seat. At this time, the particles fall into the discharge port 64 and fall into the sintering component 4 through the discharge pipe 67, wherein the sintering component 4 is a rotary kiln, which can sinter the particles. The sintering temperature is higher than the drying temperature and lower than the temperature inside the kiln. On the one hand, it can decompose the binder, and on the other hand, it can perform a second stage of heating on the raw materials to avoid cracking and producing powder in the raw materials during the sintering process. wherein the rotary kiln can be partially heated by the waste heat recovery of the kiln, and a compensating heating structure is additionally provided inside it to ensure that the temperature reaches the sintering temperature;

[0069] During the above-mentioned feeding process of the particles as the wheel frame 5 rotates, air is blown to the wheel frame 5 through the air outlet pipe 66 to dry the particles in the chamber. The air outlet pipe 66 is connected to the air outlet of the heat exchanger 6, and the heat source input end of the heat exchanger 6 is connected to the exhaust port of the kiln. During the operation of the kiln, the waste heat of the flue gas heats the air input to the heat exchanger 6 through heat exchange and is discharged to the air outlet pipe 66, thereby providing hot air to dry the particles and performing primary heating at the same time to avoid cracking caused by sudden high-temperature melting or sintering, and also to avoid the problem of a large amount of water vapor generated by drying inside the kiln affecting the melting effect.

[0070] like Figure 4 、 Figure 8 and Figure 10 As shown, preferably, the side wall of the wheel frame 5 is penetrated by a plurality of fixed sleeves 59, and the inner walls of the fixed sleeves 59 are slidably connected with a pressure rod 57, one end of the pressure rod 57 is fixedly connected with a hemispherical pressure head 60, and the end of the pressure rod 57 away from the pressure head 60 extends to the inside of the wheel frame 5, and a spiral groove 63 is provided on the outer wall of the pressure rod 57, and a transmission buckle 62 is fixedly connected to the inner side of the fixed sleeve 59, and the transmission buckle 62 is slidably connected to the spiral groove 63. A spring is sleeved on the outside of the pressure rod 57 and is located between the sliding sleeve 36 and the pressure head 60. A plurality of trigger rods 61 are fixedly connected between the sides of the two fixed rings 68. The side wall of the pressure rod 57 is located inside the wheel frame 5 and is fixedly connected with a turning rod 58.

[0071] The raw materials need to be transported by the rotation of the wheel frame 5 to transport the granular raw materials, and at the same time, they are dried during the transportation process. In order to improve the drying effect, this solution also provides a pressure rod 57 that can move synchronously in the axial direction and the circumferential direction, and cooperates with the turning rod 58 to make the raw material drying process more uniform; specifically, during the rotation of the wheel frame 5, the pressure head 60 intermittently contacts and squeezes with the trigger rod 61. Under the extrusion action, the pressure rod 57 moves axially, squeezing the spring, and at the same time, the axial movement of the pressure rod 57 cooperates with the spiral groove 63 and the transmission buckle 62 to make the pressure rod 57 rotate circumferentially at the same time, so that the turning rod 58 turns the raw material particles; after the pressure head 60 passes the pressure rod 57, the pressure head 60 is reset under the action of the spring rebound.

[0072] like Figure 10 and Figure 11 As shown, preferably, the interior of the wheel core 53 is set to a hollow structure, the bottom of the discharge port 64 is provided with filter holes, and the bottom of the wheel core 53 is provided with a dust exhaust pipe 65.

[0073] During the drying process, there are some small-sized debris, which enter the discharge port 64 along with the particles and are screened. The small-sized debris falls into the wheel core 53 through the filter holes and is discharged from the dust exhaust pipe 65, while the large particles are sent out through the discharge pipe 67. Example 6

[0074] Based on Example 1, the present invention provides a technical solution: preferably, the binder is silica sol.

[0075] Since a binder is needed, in order to reduce the impact of the binder on the raw material composition, silica sol is selected as the binder. After being heated at 850-900℃ for 15-20 minutes, silica sol decomposes into silicon dioxide (a component of glass fiber) without any harmful residue.

[0076] It is important to note that during the operation, the amount of silica raw material used needs to be reduced accordingly according to the amount of binder used.

[0077] The above generally describes the present invention in detail. However, it is obvious to those skilled in the art that modifications or improvements may be made based on the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A kiln for glass fiber production with a multi-stage heating function, comprising a kiln body (1); characterized in that: Also includes: A mixing component, used for mixing powdered raw materials with diluted binder to form a mixture; A granulating component (2) is arranged below the mixing component and is used to form the mixed material into granules; A drying component for drying and preliminarily heating the produced particles using the waste heat from the exhaust of the kiln body (1); A sintering component (4) is used to sinter the dried particles to decompose the binder and simultaneously complete the secondary heating of the particles; The mixing component comprises a mixing tank (3), the top of the inner wall of the mixing tank (3) is rotatably connected to a hollow shaft (9), the outside of the hollow shaft (9) is fixedly connected to a rotating frame (11), the two ends of the rotating frame (11) are symmetrically fixedly mounted with mixing motors (12), the output ends of the mixing motors (12) are both fixedly connected to spiral stirring rods (13), the top of the mixing tank (3) is fixedly connected to a transmission box (15), the top of the mixing tank (3) is fixedly mounted with a driving motor (16), the output end of the driving motor (16) extends to the inside of the transmission box (15) and is fixedly connected to a first bevel gear (17), the outer wall of the hollow shaft (9) is fixedly connected to a second bevel gear (18), and the second bevel gear (18) is meshedly connected to the first bevel gear (17); The mixing component further comprises a dilution tank (8), the dilution tank (8) being fixedly connected to the top of the inner wall of the mixing tank (3), a filling port being provided on the top of the dilution tank (8), the top of the hollow shaft (9) passing through the top of the transmission case (15) and being fixedly connected to a rotary joint (46), a nozzle (10) being installed at the bottom end of the hollow shaft (9), the hollow shaft (9) passing through the dilution tank (8) and being rotatably connected to the dilution tank (8), a stirring blade (14) being fixedly connected to the outer wall of the hollow shaft (9) and located inside the dilution tank (8), a feeding structure for regularly extracting a binder from the dilution tank (8) to the mixing tank (3) being provided on the top of the mixing tank (3), a feeding pipe with an electric valve being provided at the lower end of the mixing tank (3); and the two spiral stirring rods (13) having different lengths.

2. The glass fiber production kiln with multi-stage heating function according to claim 1, characterized in that: The feeding structure comprises a metering cylinder (24) fixedly connected to the top of the mixing tank (3), a first piston plate (29) is slidably connected to the lower part of the inner wall of the metering cylinder (24), a second piston plate (30) is slidably connected to the upper part of the inner wall of the metering cylinder (24), a linkage rod (31) is fixedly connected between the first piston plate (29) and the second piston plate (30), a strip groove (32) is provided at the middle position of the metering cylinder (24), a tension spring is fixedly connected between the bottom of the first piston plate (29) and the bottom of the inner wall of the metering cylinder (24), a valve body (25) is fixedly connected to the upper end of the metering cylinder (24), a release tube is provided on the side of the valve body (25) away from the metering cylinder (24), and a spherical valve core is rotatably connected between the inner walls of the valve body (25). (48), a through hole is provided in the middle of the valve core (48), the central axis of the valve core (48) extends to the outside of the valve body (25) and is fixedly connected to the transmission gear (44), the outer wall of the metering cylinder (24) is fixedly connected to the slide rail (26), the outer wall of the slide rail (26) is slidably connected to the slider (27), one side of the slider (27) is fixedly connected to the rack (28), and the rack (28) is meshed with the transmission gear (44); the side wall of the linkage rod (31) is fixedly connected to the movable rod (33), the end of the movable rod (33) away from the linkage rod (31) extends to the outside of the metering cylinder (24) through the strip groove (32) and is fixedly connected to the L-shaped plate (34), and one side of the L-shaped plate (34) is fixedly connected to two push plates (35); The top of the mixing tank (3) is fixedly connected to a piston cylinder (22), and a third piston plate (23) is slidably connected between the inner walls of the piston cylinder (22). An air inlet pipe (38) and an air outlet pipe (45) are provided on the piston cylinder (22), and a one-way valve is provided inside the air inlet pipe (38) and the air outlet pipe (45). The end of the air inlet pipe (38) away from the piston cylinder (22) is connected to the upper end of the metering cylinder (24) through a pipeline; the portion of the hollow shaft (9) located in the dilution tank (8) is provided with a liquid extraction hole (51), and the interior of the liquid extraction hole (51) and the hollow shaft (9) near the nozzle (10) are connected. ) are provided with a one-way valve, one side of the transmission box (15) is rotatably connected to a turntable (20), a side wall of the turntable (20) is rotatably connected to a rocker (21) at a position off-center, the bottom of the rocker (21) extends to the interior of the piston cylinder (22) and is rotatably connected to the top of the third piston plate (23), the central axis of the turntable (20) extends to the interior of the transmission box (15) and is fixedly connected to a third bevel gear (19), the third bevel gear (19) is meshed with the second bevel gear (18), and the lower end of the metering cylinder (24) and the top of the rotary joint (46) are connected through a pipeline.

3. The glass fiber production kiln with multi-stage heating function according to claim 2, characterized in that: The top of the mixing tank (3) is fixedly connected to a fixed plate (39), one side of the fixed plate (39) is fixedly connected to a hanging pin (40), the fixed plate (39) is located on the side where the hanging pin (40) is located and is fixedly connected to two limit columns (43), the fixed plate (39) is located on the side where the hanging pin (40) is located and is rotatably connected to a rocker (41), a tension spring is suspended between the end of the rocker (41) and the hanging pin (40), the rack (28) part has no teeth, and the part of the rack (28) without teeth is penetrated and inserted with a sliding sleeve (36), the end of the rocker (41) is fixedly connected to a sliding rod (37), the sliding rod (37) penetrates the sliding sleeve (36) and is slidably connected to the inner wall of the sliding sleeve (36).

4. The glass fiber production kiln with multi-stage heating function according to claim 3, characterized in that: The granulation component (2) comprises a granulator, and a template (49) is provided at the output end of the granulator, and a cross-shaped die hole (50) is opened on the template (49).

5. The glass fiber production kiln with multi-stage heating function according to claim 4, characterized in that: The drying component comprises a support frame (52) and a heat exchanger (6), one side of the inner wall of the support frame (52) is fixedly connected to a wheel core (53), the side of the inner wall of the support frame (52) opposite to the wheel core (53) is rotatably connected to a wheel frame (5), the wheel core (53) is slidably connected to the inner wall of the wheel frame (5), both bottom surfaces of the wheel frame (5) are configured as filter structures, the inner side of the wheel frame (5) is fixedly connected to a plurality of partitions (56), the partitions (56) are arranged in a ring shape inside the wheel frame (5), a feeding motor (55) is fixedly mounted on one side of the support frame (52), the output end of the feeding motor (55) is connected to the central axis of the wheel frame (5), and the output end of the feeding motor (55) is connected to the central axis of the wheel frame (5). The support frame (52) is fixedly connected with two fixed rings (68) symmetrically fixedly connected at the top, and an air outlet pipe (66) is fixedly connected to the inner side of the fixed ring (68). The heat exchanger (6) is connected to the air outlet pipe (66) through a pipe, and is connected to the exhaust port of the kiln body (1) through a pipe; the top of the wheel core (53) is fixedly connected with a discharge port (64), and one side of the wheel core (53) is fixedly connected with a discharge pipe (67) connected to the discharge port (64); the discharge pipe (67) is connected to the input end of the sintering component (4), and the output end of the sintering component (4) is connected to the feeding port of the kiln body (1) through an external feeder.

6. The glass fiber production kiln with multi-stage heating function according to claim 5, characterized in that: The side wall of the wheel frame (5) is connected with a plurality of fixed sleeves (59), and the inner wall of the fixed sleeve (59) is slidably connected with a pressure rod (57), one end of the pressure rod (57) is fixedly connected with a hemispherical pressure head (60), and the end of the pressure rod (57) away from the pressure head (60) extends to the inside of the wheel frame (5), and the outer wall of the pressure rod (57) is provided with a spiral groove (63), and the inner side of the fixed sleeve (59) is fixedly connected with a transmission buckle (62), and the transmission buckle (62) is slidably connected to the spiral groove (63). A spring is sleeved on the outside of the pressure rod (57) and located between the sliding sleeve (36) and the pressure head (60), and a plurality of trigger rods (61) are fixedly connected between the two sides of the fixed rings (68) that are close to each other. The side wall of the pressure rod (57) is located inside the wheel frame (5) and is fixedly connected with a turning rod (58).

7. The glass fiber production kiln with multi-stage heating function according to claim 6, characterized in that: The interior of the wheel core (53) is configured as a hollow structure, a filter hole is provided at the bottom of the discharge port (64), and a dust exhaust pipe (65) is provided at the bottom of the wheel core (53).

8. The glass fiber production kiln with multi-stage heating function according to claim 1, characterized in that: The binder is silica sol.

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