Long glass fiber production drawing equipment and drawing process

Abstract

A long glass fiber production drawing equipment and a drawing process belong to the field of glass fiber production technology. In order to solve the problem that the raw fiber tube that has not been pre-dried needs to be dried for a long time, the present invention provides a waste heat utilization box. The waste heat utilization box heats the air in the air inlet cavity with the help of the heat overflowed from the melting furnace. Under the action of the hot air pump, the hot air in the air inlet cavity enters the air outlet cavity through the air through hole, and then enters the air outlet main pipe through the connecting pipe. The hot air enters the drying cylinder from the air outlet hole and the air inlet hole. The hot air output from the air outlet holes on the symmetrically arranged air outlet main pipe directly collides with the hot air in the air inlet hole, and dries the glass fiber along the inner wall of the drying cylinder that is inclined upward. During this period, a part of the hot air is dissipated from the overflow hole to the drying box, so as to ensure the temperature in the drying box, reduce the subsequent drying time of the raw fiber tube, utilize the heat overflowed from the melting furnace, and reduce energy consumption.

Description

Technical Field

[0001] The present invention relates to the technical field of glass fiber production, and in particular to a long glass fiber production drawing device and a drawing process. Background Art

[0002] Glass fiber is an inorganic, non-metallic material with excellent properties, available in a wide variety. Its advantages include excellent insulation, strong heat resistance, good corrosion resistance, and high mechanical strength, but its disadvantages include brittleness and poor wear resistance. The diameter of a single fiber ranges from a few microns to more than 20 microns, equivalent to 1 / 20-1 / 5 of a human hair. Each fiber strand is composed of hundreds or even thousands of individual filaments. Glass fiber is commonly used as a reinforcement in composite materials, electrical insulation and thermal insulation materials, circuit boards, and other applications in various sectors of the national economy.

[0003] In the existing glass fiber raw yarn production process, the mineral material is melted and flows out from the leak plate. After passing through the spray system, oiling system, and beam splitting system, it is wound into a hollow cylindrical yarn ball by the drawing machine. However, the wetting liquid will be sprayed during the drawing process, and the raw yarn tube needs to be dried subsequently. Application number: CN201910166539.7 discloses a glass fiber drawing machine. After the oiler 16 is oiled, the drawing operation is performed on the drawing roller. The raw yarn tube is not pre-dried in advance, which makes the drying time too long, the production efficiency is too low, and the energy consumption cost is too high.

[0004] To solve the above problems, a long glass fiber production drawing equipment and a drawing process are proposed. Summary of the Invention

[0005] The object of the present invention is to provide a long glass fiber production drawing device and a drawing process, which can solve the problem in the above background technology that the raw fiber tube that has not been pre-dried in advance needs to be dried for a long time.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a long glass fiber production drawing equipment, comprising a mounting frame 1, a melting furnace 2 is fixedly mounted on the top of the mounting frame 1, a waste heat drying component 3 is arranged between the mounting frames 1, and a cooling component 4 is arranged at the bottom of the melting furnace 2; the waste heat drying component 3 includes a waste heat utilization box 31 fixedly mounted on the side wall of the melting furnace 2, a drying box 32 is fixedly mounted between the mounting frames 1, a heat conduction box 33 is fixedly mounted on the top of the drying box 32, a drying box 34 is fixedly mounted on the top of the drying box 32, and a plurality of equidistant and uniformly arranged on the drying box 32 and the heat conduction box 33. Drying through holes 35, and several drying cylinders 36 corresponding to the drying through holes 35 are fixedly installed in the drying box 32; air outlet pipes 37 are symmetrically arranged on both sides of the drying cylinder 36, and several air outlet holes 371 are opened on the air outlet pipe 37 near the side of the drying cylinder 36, and air inlet holes 361 are opened on the side wall of the drying cylinder 36 near the air outlet pipe 37, and an overflow hole 362 is opened on the top of the drying cylinder 36. A hot air pump 315 connected to the air outlet cavity 313 is fixedly installed at the bottom of the waste heat utilization box 31, and the hot air pump 315 is connected to the center of the air outlet pipe 37 through a connecting pipe 316 that runs through the drying box 32.

[0007] Furthermore, a fixed partition plate 311 is fixedly installed in the waste heat utilization box 31 , and the fixed partition plate 311 divides the waste heat utilization box 31 into an air inlet chamber 312 and an air outlet chamber 313 . An air through hole 314 is provided above the fixed partition plate 311 .

[0008] Furthermore, the heat conduction box 33 is connected to the drying box 34. A tilted fixed inclined plate 331 is fixedly installed in the heat conduction box 33. The fixed inclined plate 331 is tilted away from the drying box 34. An air hole 332 corresponding to the drying through hole 35 is opened on the fixed inclined plate 331.

[0009] Furthermore, the drying box 34 is filled with a desiccant 341 , and the drying box 34 is connected to a return air pipe 317 , the other end of the return air pipe 317 passes through the bottom end of the waste heat utilization box 31 to the air inlet cavity 312 .

[0010] Furthermore, the bottom end of the melting furnace 2 is connected to a discharge pipe 21, and a plurality of pairs of slots 211 are fixedly installed on the outer wall of the discharge pipe 21. A wire drawing leakage plate 22 is provided below the discharge pipe 21, and a plurality of transmission channels 221 are provided in the wire drawing leakage plate 22. An insert block 222 is fixedly installed on the top of the wire drawing leakage plate 22, and the insert block 222 cooperates with the slot 211. An installation hole 223 is provided on the insert block 222. The wire drawing leakage plate 22 is fixedly connected to the discharge pipe 21 by a fastening bolt passing through the installation hole 223.

[0011] Furthermore, the cooling assembly 4 includes an electric telescopic rod 41 fixedly installed under the mounting frame 1, and a cooling box 42 is fixedly installed at the movable end of the electric telescopic rod 41. The cooling box 42 is arranged below the drawing leak plate 22. A number of cooling holes 421 are evenly and equidistantly opened on the cooling box 42, and a number of cooling cylinders 422 corresponding to the cooling holes 421 are fixedly installed in the cooling box 42.

[0012] Furthermore, a sliding rod 43 is fixedly installed under the mounting frame 1, and the cooling box 42 is slidably sleeved on the sliding rod 43. A cooling pipe 44 is fixedly installed in the cooling box 42, and the cooling pipe 44 is arranged on the outside of the cooling cylinder 422. The cooling pipe 44 is connected to a circulation pipe 45 at both ends.

[0013] Furthermore, the diameter of the air outlet 371 gradually increases from the center to both sides, the diameter of the air inlet 361 is larger than the diameter of the air outlet 371, and the inner diameter of the drying cylinder 36 gradually increases from bottom to top.

[0014] Furthermore, the transmission channel 221 , the cooling through hole 421 , the drying through hole 35 and the air hole 332 correspond to each other one by one and have the same diameter. A drawing roller 5 placed below the drying box 32 is provided between the mounting frames 1 .

[0015] Another technical solution proposed by the present invention is to provide a long glass fiber production drawing process, comprising the following steps:

[0016] S1: First, the discharge pipe 21 and the wire drawing plate 22 are fixedly connected by tightening bolts. The electric telescopic rod 41 is adjusted to adjust the cooling box 42 to a suitable position. The circulation pipe 45 is connected to the external cold water source so that the cold water circulates in the cooling pipe 44 and the circulation pipe 45. At the same time, the hot air pump 315 is started so that the hot air circulates in the connecting pipe 316 and the return pipe 317.

[0017] S2: Qualified ingredients are placed in the melting furnace 2. The qualified ingredients are heated at high temperature to form uniform, defect-free and qualified glass liquid. The produced glass liquid passes through the transmission channel 221 on the drawing plate 22 to form glass fibers.

[0018] S3: The glass fiber is cooled through the cooling hole 421 and the cooling cylinder 422, and the impregnation liquid is sprayed on the glass fiber at the same time;

[0019] S4: After the glass fiber passes through the drying through hole 35, the air hole 332, and the drying drum 36, the hot air pre-dries the moisture on the glass fiber. The dried glass fiber is drawn on the drawing roller 5 to complete the production of the product.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention proposes a long glass fiber production drawing equipment and drawing process. First, the discharge pipe and the drawing filter plate are fixedly connected by fastening bolts, the electric telescopic rod is adjusted to adjust the cooling box to a suitable position, the circulation pipe is connected to the external cold water source, so that the cold water circulates in the cooling pipe and the circulation pipe, and at the same time, the hot air pump is started to circulate the hot air in the connecting pipe and the return air pipe. Qualified ingredients are placed in the melting furnace. The qualified ingredients are heated at high temperature to form uniform, defect-free and qualified glass liquid. The generated glass liquid passes through the transmission tube on the drawing filter plate. The conveyor channel forms glass fiber, which is cooled through the cooling holes and the cooling cylinder, and at the same time, the glass fiber is sprayed with impregnation liquid; the waste heat utilization box heats the air in the air inlet cavity with the help of the heat overflowed from the melting furnace. Under the action of the hot air pump, the hot air in the air inlet cavity enters the air outlet cavity through the air through hole, and then enters the air outlet main pipe through the connecting pipe. The hot air enters the drying cylinder from the air outlet and air inlet holes, pre-dries the moisture on the glass fiber, reduces the subsequent drying time of the raw fiber cylinder, utilizes the heat overflowed from the melting furnace, and reduces energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a long glass fiber production drawing equipment and drawing process of the present invention;

[0023] Figure 2 Schematic diagram of the cross-sectional structure of the drying box, heat conduction box and drying box of the present invention;

[0024] Figure 3 Schematic diagram of the cross-sectional structure of the waste heat utilization box of the present invention;

[0025] Figure 4 Schematic diagram of the cross-sectional structure of the drying drum of the present invention;

[0026] Figure 5 This is a schematic structural diagram of the gas outlet main pipe of the present invention;

[0027] Figure 6 It is a structural schematic diagram of the discharge pipe and the wire drawing bushing of the present invention;

[0028] Figure 7 It is a schematic diagram of the internal structure of the cooling box of the present invention.

[0029] In the figure: 1. Mounting frame;

[0030] 2. Melting furnace; 21. Discharge pipe; 211. Slot; 22. Wire drawing plate; 221. Transmission channel; 222. Insert block; 223. Mounting hole;

[0031] 3. Waste heat drying assembly; 31. Waste heat utilization box; 311. Fixed partition plate; 312. Air inlet cavity; 313. Air outlet cavity; 314. Air passage hole; 315. Heat pump; 316. Connecting pipe; 317. Air return pipe; 32. Drying box; 33. Heat conduction box; 331. Fixed inclined plate; 332. Air passage hole; 34. Drying box; 341. Desiccant; 35. Drying passage hole; 36. Drying cylinder; 361. Air inlet hole; 362. Overflow hole; 37. Air outlet main pipe; 371. Air outlet hole;

[0032] 4. Cooling assembly; 41. Electric telescopic rod; 42. Cooling box; 421. Cooling through hole; 422. Cooling cylinder; 43. Sliding rod; 44. Cooling pipe; 45. Circulation pipe;

[0033] 5. Drawing roller. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0035] like Figure 1 - Figure 7 As shown, the following preferred technical solutions are provided:

[0036] A long glass fiber production drawing equipment includes a mounting frame 1, a melting furnace 2 is fixedly installed on the top of the mounting frame 1, a waste heat drying component 3 is set between the mounting frames 1, and a cooling component 4 is set at the bottom of the melting furnace 2; the waste heat drying component 3 includes a waste heat utilization box 31 fixedly installed on the side wall of the melting furnace 2, a drying box 32 is fixedly installed between the mounting frames 1, a heat conduction box 33 is fixedly installed on the top of the drying box 32, and a drying box 34 is fixedly installed on the top of the drying box 32. A plurality of drying through holes 35 are evenly spaced on the drying box 32 and the heat conduction box 33. Several drying cylinders 36 corresponding to the drying through holes 35 are fixedly installed in 32; air outlet pipes 37 are symmetrically arranged on both sides of the drying cylinder 36, and several air outlet holes 371 are provided on the air outlet pipe 37 near the side of the drying cylinder 36, and air inlet holes 361 are provided on the side wall of the drying cylinder 36 near the air outlet pipe 37, and an overflow hole 362 is provided on the top of the drying cylinder 36. A hot air pump 315 connected to the air outlet cavity 313 is fixedly installed at the bottom end of the waste heat utilization box 31, and the hot air pump 315 is connected to the center of the air outlet pipe 37 through a connecting pipe 316 that runs through the drying box 32.

[0037] Pre-drying the moisture on the glass fiber can reduce the subsequent drying time of the raw fiber drum, improve production efficiency and reduce energy consumption costs.

[0038] A fixed partition plate 311 is fixedly installed in the waste heat utilization box 31 . The fixed partition plate 311 divides the waste heat utilization box 31 into an air inlet chamber 312 and an air outlet chamber 313 . An air passage hole 314 is provided above the fixed partition plate 311 .

[0039] The heat conduction box 33 is connected to the drying box 34. A fixed inclined plate 331 is fixedly installed in the heat conduction box 33. The fixed inclined plate 331 is inclined away from the drying box 34. An air hole 332 corresponding to the drying through hole 35 is opened on the fixed partition plate 331.

[0040] The drying box 34 is filled with a desiccant 341 . The drying box 34 is connected to an air return pipe 317 . The other end of the air return pipe 317 passes through the bottom end of the waste heat utilization box 31 to the air inlet cavity 312 .

[0041] The diameter of the air outlet 371 gradually increases from the center to both sides, the diameter of the air inlet 361 is larger than the diameter of the air outlet 371, and the inner diameter of the drying cylinder 36 gradually increases from bottom to top.

[0042] The waste heat utilization box 31 heats the air in the air inlet chamber 312 with the help of the heat overflowed from the melting furnace 2, thereby utilizing the overflow energy and reducing energy consumption. At the same time, the hot air returns to the drying box 34 along the fixed partition plate 311, and the desiccant 341 absorbs the moisture in the hot air.

[0043] The hot air output from the outlet holes 371 on the symmetrically arranged outlet main pipe 37 directly collides with the hot air in the air inlet hole 361, and dries the glass fiber along the upward inclined inner wall of the drying cylinder 36. During this period, part of the hot air is dissipated from the overflow hole 362 to the drying box 32 to ensure the temperature inside the drying box 32.

[0044] The dried hot air enters the heat conduction box 33, and then enters the drying box 34 along the fixed inclined plate 331. The desiccant 341 absorbs the moisture in the hot air, and then the dried hot air returns to the air inlet cavity 312 through the return air pipe 317. The aperture of the air outlet 371 gradually increases from the center to the two sides to ensure that the air output of each air outlet 371 is consistent.

[0045] The bottom end of the melting furnace 2 is connected to a discharge pipe 21, and a plurality of pairs of slots 211 are fixedly installed on the outer wall of the discharge pipe 21. A wire drawing leakage plate 22 is arranged below the discharge pipe 21, and a plurality of transmission channels 221 are arranged in the wire drawing leakage plate 22. An insert block 222 is fixedly installed on the top of the wire drawing leakage plate 22, and the insert block 222 cooperates with the slot 211. A mounting hole 223 is opened on the insert block 222. The wire drawing leakage plate 22 is fixedly connected to the discharge pipe 21 by a fastening bolt passing through the mounting hole 223.

[0046] Through the cooperation between the slot 211 and the insert block 222 , the discharge pipe 21 and the wire drawing bushing 22 are tightly connected after being fixed by the fastening bolts.

[0047] The cooling assembly 4 includes an electric telescopic rod 41 fixedly installed under the mounting frame 1, and a cooling box 42 is fixedly installed at the movable end of the electric telescopic rod 41. The cooling box 42 is arranged under the drawing leak plate 22. A number of cooling holes 421 are evenly spaced on the cooling box 42, and a number of cooling cylinders 422 corresponding to the cooling holes 421 are fixedly installed in the cooling box 42.

[0048] A sliding rod 43 is fixedly installed below the mounting frame 1, and a cooling box 42 is slidably sleeved on the sliding rod 43. A cooling pipe 44 is fixedly installed in the cooling box 42. The cooling pipe 44 is arranged on the outside of the cooling cylinder 422, and the first and second ends of the cooling pipe 44 are connected to a circulation pipe 45.

[0049] The transmission channel 221 , the cooling through hole 421 , the drying through hole 35 and the air hole 332 correspond to each other one by one and have the same diameter. A drawing roller 5 placed below the drying box 32 is provided between the mounting frames 1 .

[0050] By arranging the electric telescopic rod 41 and the sliding rod 43 , only the vertical height of the cooling box 42 is adjusted to ensure that the transmission path 221 and the air through hole 314 are aligned.

[0051] Specifically, the glass liquid enters the discharge pipe 21 from the melting furnace 2, follows the transmission path 221 on the drawing leak plate 22 and enters the cooling cylinder 422 along the cooling through hole 421. After cooling, it enters the heat conduction box 33 from the drying through hole 35, and then enters the drying cylinder 36. After being dried with hot air, the drawing operation is carried out on the drawing roller 5.

[0052] During the drying process, the main circulation path of the hot air is: the hot air in the air inlet chamber 312 passes through the air through hole 314 to the air outlet chamber 313, enters the air outlet main pipe 37 through the connecting pipe 316, enters the drying cylinder 36 through the air outlet hole 371 and the air inlet hole 361, and then enters the heat conduction box 33 and the drying box 34, and returns to the air inlet chamber 312 through the return air pipe 317; during the hot air circulation process, part of the hot air in the drying cylinder 36 enters the drying box 32 through the overflow hole 362 to ensure the stability inside the drying box 32.

[0053] In order to further better explain the above embodiment, the present invention also provides an embodiment, a long glass fiber production drawing process, comprising the following steps:

[0054] Step 1: First, securely connect the discharge pipe 21 and the wire drawing plate 22 by tightening the bolts. Adjust the electric telescopic rod 41 to adjust the cooling box 42 to a suitable position. Connect the circulation pipe 45 to the external cold water source so that the cold water circulates in the cooling pipe 44 and the circulation pipe 45. Simultaneously, start the hot air pump 315 so that the hot air circulates in the connecting pipe 316 and the return air pipe 317.

[0055] Step 2: Qualified ingredients are placed in the melting furnace 2. The qualified ingredients are heated at high temperature to form uniform, defect-free and qualified glass liquid. The produced glass liquid passes through the transmission channel 221 on the drawing plate 22 to form glass fibers.

[0056] Step 3: The glass fiber is cooled through the cooling hole 421 and the cooling cylinder 422, and the glass fiber is sprayed with the impregnation liquid at the same time;

[0057] Step 4: After the glass fiber passes through the drying through hole 35, the air hole 332, and the drying drum 36, the hot air pre-dries the moisture on the glass fiber. The dried glass fiber is drawn on the drawing roller 5 to complete the production of the product.

[0058] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0059] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A long glass fiber production drawing device, comprising a mounting frame (1), characterized in that: A melting furnace (2) is fixedly mounted on the top of the mounting frame (1), a waste heat drying assembly (3) is arranged between the mounting frames (1), and a cooling assembly (4) is arranged at the bottom of the melting furnace (2); the waste heat drying assembly (3) comprises a waste heat utilization box (31) fixedly mounted on the side wall of the melting furnace (2), a drying box (32) is fixedly mounted between the mounting frames (1), a heat conduction box (33) is fixedly mounted on the top of the drying box (32), a drying box (34) is fixedly mounted on the top of the drying box (32), a plurality of drying through holes (35) are evenly and equidistantly opened on the drying box (32) and the heat conduction box (33), and a heat conduction box (34) is fixedly mounted inside the drying box (32). There are a plurality of drying cylinders (36) corresponding to the drying through holes (35); air outlet main pipes (37) are symmetrically arranged on both sides of the drying cylinder (36); a plurality of air outlet holes (371) are opened on the air outlet main pipe (37) close to the drying cylinder (36); an air inlet hole (361) is opened on the side wall of the drying cylinder (36) close to the air outlet main pipe (37); an air overflow hole (362) is opened on the top of the drying cylinder (36); a hot air pump (315) connected to the air outlet cavity (313) is fixedly installed at the bottom end of the waste heat utilization box (31); the hot air pump (315) is connected to the center of the air outlet main pipe (37) through a connecting pipe (316) running through the drying box (32).

2. The long glass fiber production drawing equipment according to claim 1, characterized in that: A fixed partition plate (311) is fixedly installed in the waste heat utilization box (31), and the fixed partition plate (311) divides the waste heat utilization box (311) into an air inlet chamber (312) and an air outlet chamber (313). An air passage hole (314) is provided above the fixed partition plate (311).

3. The long glass fiber production drawing equipment according to claim 1, characterized in that: The heat conduction box (33) is connected to the drying box (34), and a fixed inclined plate (331) is fixedly installed in the heat conduction box (33). The fixed inclined plate (331) is inclined from the drying box (34) to the direction away from the drying box (34), and an air hole (332) corresponding to the drying through hole (35) is opened on the fixed inclined plate (331).

4. The long glass fiber production drawing equipment according to claim 3, characterized in that: The drying box (34) is filled with a desiccant (341), and the drying box (34) is connected to a return air pipe (317). The other end of the return air pipe (317) passes through the bottom end of the waste heat utilization box (31) to the air inlet cavity (312).

5. The long glass fiber production drawing equipment according to claim 4, characterized in that: The bottom end of the melting furnace (2) is connected to a discharge pipe (21), and a plurality of pairs of slots (211) are fixedly installed on the outer wall of the discharge pipe (21). A wire drawing leakage plate (22) is provided below the discharge pipe (21), and a plurality of transmission paths (221) are provided in the wire drawing leakage plate (22). An insert block (222) is fixedly installed on the top of the wire drawing leakage plate (22), and the insert block (222) cooperates with the slot (211). A mounting hole (223) is provided on the insert block (222), and the wire drawing leakage plate (22) is fixedly connected to the discharge pipe (21) by a fastening bolt passing through the mounting hole (223).

6. The long glass fiber production drawing equipment according to claim 5, characterized in that: The cooling assembly (4) includes an electric telescopic rod (41) fixedly mounted below the mounting frame (1), a cooling box (42) fixedly mounted on the movable end of the electric telescopic rod (41), the cooling box (42) being arranged below the wire drawing plate (22), a plurality of cooling through holes (421) being evenly and equidistantly formed on the cooling box (42), and a plurality of cooling cylinders (422) corresponding to the cooling through holes (421) being fixedly mounted in the cooling box (42).

7. The long glass fiber production drawing equipment according to claim 6, characterized in that: A sliding rod (43) is fixedly installed below the mounting frame (1), the cooling box (42) is slidingly sleeved on the sliding rod (43), a cooling pipe (44) is fixedly installed in the cooling box (42), the cooling pipe (44) is arranged outside the cooling cylinder (422), and the cooling pipe (44) is connected to a circulation pipe (45) at its head and end.

8. The long glass fiber production drawing equipment according to claim 1, characterized in that: The diameter of the air outlet (371) gradually increases from the center to both sides, the diameter of the air inlet (361) is larger than the diameter of the air outlet (371), and the inner diameter of the drying cylinder (36) gradually increases from bottom to top.

9. The long glass fiber production drawing equipment according to claim 6, characterized in that: The transmission path (221), the drying through hole (35), the air hole (332) and the cooling through hole (421) correspond to each other and have the same diameter. A drawing roller (5) placed below the drying box (32) is provided between the mounting frames (1).

10. A drawing process for the long glass fiber production drawing equipment according to claim 7, characterized in that: The following steps are involved: S1: First, the discharge pipe (21) and the wire drawing plate (22) are fixedly connected by tightening bolts, the electric telescopic rod (41) is adjusted to adjust the cooling box (42) to a suitable position, the circulation pipe (45) is connected to the external cold water source, so that the cold water circulates in the cooling pipe (44) and the circulation pipe (45), and at the same time, the hot air pump (315) is started to circulate the hot air in the connecting pipe (316) and the return air pipe (317); S2: placing qualified ingredients into a melting furnace (2), heating the qualified ingredients at high temperature to form a uniform, defect-free and qualified glass liquid, and the generated glass liquid passes through a transmission path (221) on a drawing plate (22) to form glass fibers; S3: The glass fiber is cooled through the cooling through hole (421) and the cooling cylinder (422), and the impregnation liquid is sprayed on the glass fiber at the same time; S4: After the glass fiber passes through the drying through hole (35), the air hole (332), and the drying drum (36), the hot air pre-dries the moisture on the glass fiber. The dried glass fiber is drawn on the drawing roller (5) to complete the production of the product.

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