A forming production device for pre-oxidized silk cloth

Abstract

The present invention discloses a forming and production device for preoxidized silk cloth, which relates to the field of carbon fiber production. In this solution, heat from multiple temperature zones accumulates upward due to thermal evaporation. Compared with the traditional method, the heat accumulated upward is helpful to maintain the temperature of the upper higher temperature zone, and reduce the mutual influence of ambient temperature caused by the movement of the preoxidized silk cloth between multiple temperature zones; at the same time, the two ends of the flow valve are connected to the return air duct and the exhaust air duct of the adjacent circulation unit. Under the positive and negative pressure of the air inlet and outlet, part of the air flow in the upper high-temperature temperature zone is automatically compensated for the ambient temperature through the air flow in the circulation unit to the relatively low-temperature temperature zone below, so that the difference between the ambient temperature and the thermal radiation temperature of the surface of the preoxidized silk cloth is greatly reduced, forming a collaborative preoxidation thermal field with radiation heating as the main and compensation heat flow as the auxiliary, which greatly ensures the uniformity of the preoxidation treatment and shortens the overall preoxidation heating time.

Description

Technical Field

[0001] The invention relates to the field of carbon fiber production, in particular to a molding production device for pre-oxidized fiber cloth. Background Art

[0002] As an intermediate product in carbon fiber manufacturing, pre-oxidized silk cloth requires weaving of raw silk during the production process, which can then be cooled and reeled after pre-oxidation treatment. However, in current molding production, the pre-oxidation step widely adopts a horizontal pre-oxidation furnace, which maintains the pre-oxidation process through independent heat radiation and hot air circulation in multiple temperature zones inside. However, the temperature has the characteristic of evaporating upward. The horizontal structure makes the temperature concentrated at the top, and hot air circulation is required to avoid heat accumulation. The pre-oxidation environment temperature inside the pre-oxidized silk cloth is greatly different from the actual heat radiation irradiation temperature, resulting in poor pre-oxidation uniformity. It often requires a longer pre-oxidation time and more temperature intervals in a similar temperature range to achieve the uniformity standard.

[0003] The core challenge facing pre-oxidized silk cloth production currently lies in the difficulty of balancing temperature uniformity during the heat treatment process with the efficiency and cleanliness of the quenching process. Traditional multi-zone pre-oxidation equipment utilizes a centralized air circulation system, which leads to severe airflow interference between the various temperature zones. Heat accumulation in high-temperature zones can easily lead to localized overoxidation, while reactions in low-temperature zones lag. This leads to large temperature fluctuations between these zones, which not only reduces product crystallization uniformity but also forces the system to rely on energy-intensive electrical compensatory heating.

[0004] In the rapid cooling stage, the existing air cooling technology is inefficient, and it takes too long to cool down to a safe temperature, which can easily cause internal stress in the material. Although direct water cooling can speed up the process, the residual impurities in the cooling water will contaminate the fabric surface, forming strength defects in the subsequent carbonization, and one-sided cooling can easily cause the fabric surface to shrink and deform. Summary of the Invention

[0005] The purpose of the present invention is to solve the problem of low reliability of the current pre-oxidized wire cloth forming process and to propose a forming production device for pre-oxidized wire cloth.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a pre-oxidized silk cloth forming production device, comprising a pre-oxidation box consisting of an insulation shell, a heat treatment chamber, and two insulation side doors, wherein a temperature uniformity component and a quenching box are installed on one side of the pre-oxidation box, and further comprising a quenching component disposed in the quenching box, wherein a plurality of temperature zones are provided inside the heat treatment chamber, and the temperature uniformity component comprises a circulation unit that circulates the plurality of temperature zones separately and a flow valve that connects adjacent circulation units;

[0007] The quenching assembly includes a vaporization power assembly and a temperature isolation assembly. The vaporization power assembly includes a water tank installed on the top of the heat treatment chamber and a water vapor separator connected thereto, as well as a high-speed air nozzle and an atomizing nozzle for spraying water vapor to cool the pre-oxidized wire cloth;

[0008] The quench box includes two guide frames symmetrically arranged on both sides of the pre-oxidized wire cloth, and a plurality of air holes are opened on the guide frames;

[0009] Heat from multiple temperature zones accumulates upwards, and the two ends of the flow valve automatically compensate for the temperature by directing the air flow from the high-temperature zone circulation unit to the low-temperature zone under the action of positive and negative pressure at the inlet and outlet of the adjacent circulation units.

[0010] The temperature isolation component controls the steam volume in the water tank. After the steam enters the water vapor separator, the residual steam convection forms a siphon when cooling the pre-oxidized wire cloth between the two guide frames. The external airflow is sucked through several air holes and evenly contacts both sides of the pre-oxidized wire cloth. At the same time, under the action of steam pressure, the condensed water is pressurized and atomized at the position of the atomizing nozzle and evaporates after contacting the pre-oxidized wire cloth due to heat.

[0011] As a further description of the above technical solution: the heat treatment chamber includes a chamber body with an insulation shell and two insulation side doors, and a number of transmission rollers are rotatably installed in the chamber body, a plurality of insulation plates are fixed on the inner wall of the chamber body for cooperating with the transmission rollers to separate temperature intervals, and a heat radiator is installed on the insulation plate, and a heat conductive cover is installed on one side of the heat treatment chamber.

[0012] As a further description of the above technical solution: it also includes a driving component that drives the pre-oxidized wire cloth to move in multiple folds with low tension through a transmission roller in the heat treatment chamber, and the driving component includes a sealing plate fixed to the inner wall of the chamber body, one end of the transmission roller rotates on the sealing plate, and one end of the transmission roller is fixed with a driven chain disc that is synchronously driven by a chain, and a number of supporting chain discs are provided in the chain to support it, and a precision control motor for driving it is installed on one side of the corresponding supporting pressure plate.

[0013] As a further description of the above technical solution: the temperature uniforming component also includes a mounting bracket fixed on the corresponding insulation side door, and the mounting bracket is equipped with a power assembly for driving the circulation unit.

[0014] As a further description of the above technical solution: the circulation unit includes a pressure chamber fixed on a mounting frame, and centrifugal fan blades are rotatably arranged in the pressure chamber, the bottom of the pressure chamber is connected to an air inlet hood, and the air inlet hood and one side of the pressure chamber are respectively connected to an exhaust duct and a return air duct, and the exhaust duct and the return air duct are respectively located on both sides of the corresponding temperature range and connected.

[0015] As a further description of the above technical solution: the power assembly includes two drive shafts axially fixed to a number of centrifugal fan blades, and driven wheels are fixed to the top of the two drive shafts. It also includes a driver fixed on the mounting frame, and the output shaft of the driver is equipped with a driving wheel that cooperates with the two driven wheels.

[0016] As a further description of the above technical solution: the top end of the flow valve is connected to the end of the return air duct in the high-pressure area of ​​the upper circulation unit, and the bottom end is connected to the end of the exhaust air duct in the low-pressure area of ​​the lower circulation unit.

[0017] As a further description of the above technical solution: the vaporization power assembly further includes a condenser pipe connected to the water tank and the water vapor separator, and a pressure reducing valve is provided at the connection between the water vapor separator and the high-speed gas nozzle.

[0018] As a further description of the above technical solution: the temperature isolation component includes a thermal insulation orifice plate fixed on the inner wall of the warehouse body and a thermal insulation slide plate that slides against the thermal insulation orifice plate to control its aperture opening. One end of the thermal insulation slide plate is provided with a plurality of springs for elastically supporting it, and a steel wire rope for pulling its displacement is fixed on the thermal insulation slide plate.

[0019] As a further description of the above technical solution: the quenching box also includes a box body and a baffle forming a partition between the guide frame and the box body, an air outlet hood is installed on one side of the box body, and a pre-cooling roller is installed on the inner wall of the box body to pre-cool the pre-oxidized wire cloth and form a partition.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0021] When this solution is in use, the heat of multiple temperature zones accumulates upward due to thermal evaporation, and the temperature zone formed by the insulation board dividing the warehouse body gradually increases in temperature from bottom to top. Compared with the traditional method, the heat accumulated upward is helpful to maintain the temperature of the upper higher temperature zone, and reduce the mutual influence of the ambient temperature caused by the movement of the pre-oxidized wire cloth between multiple temperature zones; at the same time, the two ends of the flow valve are connected to the return air duct and the exhaust duct of the adjacent circulation unit. Under the positive and negative pressure of the air inlet and outlet, part of the air flow in the upper high-temperature temperature zone is automatically compensated for the ambient temperature through the air flow in the circulation unit to the relatively low-temperature temperature zone below, so that the difference between the ambient temperature and the thermal radiation temperature of the surface of the pre-oxidized wire cloth is greatly reduced, forming a synergistic pre-oxidation thermal field with radiation heating as the main method and compensation heat flow as the auxiliary method, which greatly ensures the uniformity of the pre-oxidation treatment and shortens the overall pre-oxidation heating time.

[0022] At the same time, during the temperature compensation from top to bottom, the excess airflow at the bottom is discharged through the feed port on the left and collected by the heat conductive cover. Under the evaporation of the hot air, the hot air flows into the top of the temperature isolation component and heats the water tank. In conjunction with the change in the opening of the temperature isolation component, the airflow can flow downward to compensate, completing the internal reverse circulation of the airflow from top to bottom. At the same time, the opening of the temperature isolation component changes, and the heat can be radiated through the heating water tank, realizing the exhaust heat recovery and actively controlling the steam volume of the water tank.

[0023] The steam in the water tank is partially condensed after passing through the condenser tube, and the mixture of steam and condensed water enters the water vapor separator. After the steam is blocked by the pressure reducing valve inside, the residual steam is convected between the two guide frames through two high-speed air nozzles, and forms a siphon effect at the opening position when cooling the pre-oxidized wire cloth, so that the small space between the two guide frames forms a negative pressure. The external air flow is sucked through several air holes and evenly contacts both sides of the pre-oxidized wire cloth to achieve uniform cooling. At the same time, under the action of the pressure reducing valve, high pressure is formed in the water vapor separator, and the clean condensed water is pressurized and evenly sprayed on the surface of the pre-oxidized wire cloth through the atomizing nozzle, so that it is quickly cooled. This method realizes multi-stage rapid cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0025] Figure 2 It is a three-dimensional cross-sectional schematic diagram of the present invention;

[0026] Figure 3 A three-dimensional schematic diagram of another viewing angle of the present invention;

[0027] Figure 4 It is a schematic cross-sectional view of the present invention;

[0028] Figure 5 This is a schematic diagram of the layout of different temperature zones formed by the temperature uniformity component on the insulation board of the present invention;

[0029] Figure 6 It is an overall schematic diagram of the temperature uniforming assembly of the present invention;

[0030] Figure 7 This is a schematic diagram of the cooperation between the circulating unit and the power assembly of the present invention;

[0031] Figure 8 It is a three-dimensional cross-sectional schematic diagram of the quench box of the present invention;

[0032] Figure 9 It is a three-dimensional cross-sectional schematic diagram of the quenching component of the present invention.

[0033] Legend:

[0034] 10. Pre-oxidation box; 11. Insulation shell; 12. Insulation side door; 13. Heat treatment chamber; 131. Chamber body; 132. Conveyor roller; 133. Insulation board; 134. Heat radiator;

[0035] 20. Drive assembly; 21. Closing plate; 22. Precision control motor; 23. Supporting chainring; 24. Driven chainring;

[0036] 30. Temperature uniformity assembly; 31. Circulation unit; 311. Pressure chamber; 312. Exhaust duct; 313. Return air duct; 314. Air inlet hood; 315. Centrifugal fan blades; 32. Powertrain; 321. Driver; 322. Driving wheel; 323. Driven wheel; 324. Drive shaft; 33. Flow valve; 34. Mounting bracket;

[0037] 40. Rapid cooling assembly; 41. Vaporization power assembly; 411. Water tank; 412. Condenser; 413. Water vapor separator; 414. High-speed air nozzle; 415. Atomizing nozzle; 416. Pressure reducing valve; 42. Temperature isolation assembly; 421. Insulation orifice plate; 422. Insulation slide plate; 423. Spring; 424. Wire rope;

[0038] 50. Quick cooling box; 51. Box body; 52. Guide frame; 53. Air hole; 54. Baffle; 55. Air outlet cover; 56. Pre-cooling roller;

[0039] 60. Pre-oxidized silk cloth; 70. Thermal conductive cover. DETAILED DESCRIPTION

[0040] 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.

[0041] like Figure 1 - Figure 9 As shown, the present invention provides: a forming production device for pre-oxidized silk cloth, including a pre-oxidation box 10 consisting of an insulation shell 11, a heat treatment chamber 13 and two insulation side doors 12, and a temperature uniformity component 30 and a quenching box 50 are installed on one side of the pre-oxidation box 10, and further includes a quenching component 40 arranged in the quenching box 50, the heat treatment chamber 13 is provided with multiple temperature intervals, the temperature uniformity component 30 includes a circulation unit 31 that circulates the multiple temperature intervals separately and a flow valve 33 that connects adjacent circulation units 31;

[0042] The quenching assembly 40 includes a vaporization power assembly 41 and a temperature isolation assembly 42. The vaporization power assembly 41 includes a water tank 411 mounted on the top of the heat treatment chamber 13 and a water vapor separator 413 connected thereto, as well as a high-speed air nozzle 414 and an atomizing nozzle 415 for spraying water vapor to cool the pre-oxidized wire cloth 60. By designing the exhaust gas discharged from the bottom to heat the water tank 411, the water for quenching is preheated while avoiding direct heat waste. In traditional water cooling processes, residual impurities in the water can affect the quality of the carbon fiber. However, this problem is completely avoided by combining steam purification with atomization evaporation, thereby ensuring production quality.

[0043] The quench box 50 includes two guide frames 52 symmetrically arranged on both sides of the pre-oxidized wire cloth 60, and a plurality of air holes 53 are opened on the guide frames 52;

[0044] The heat in multiple temperature zones accumulates upward, and the two ends of the flow valve 33 automatically compensate for the temperature by directing the air flow in the high-temperature zone circulation unit 31 to the low-temperature zone under the action of the positive and negative pressures at the inlet and outlet of the adjacent circulation unit 31. The device adopts a collaborative design of temperature gradient control of the pre-oxidation process and rapid cooling process. The partitioning of the heat treatment chamber 13 utilizes the principle of natural rise of hot air to allow the temperature of multiple temperature zones to increase from bottom to top. The temperature zones of traditional equipment are prone to crosstalk. Intelligent compensation is achieved by cooperating with the circulation unit 31 and the flow valve 33, so that the excess heat in the high-temperature zone automatically flows to the low-temperature zone through the pressure difference, forming a thermal field of "radiation heating as the main and compensation heat flow as the auxiliary". This design is energy-saving and improves uniformity, which is more clever than simple electric heating wire compensation.

[0045] The temperature isolation assembly 42 controls the steam volume in the water tank 411. After the steam enters the water vapor separator 413, the residual steam convects between the two guide frames 52, creating a siphon effect as it cools the pre-oxidized wire cloth 60. External airflow is drawn through the several air holes 53, evenly contacting both sides of the pre-oxidized wire cloth 60. Simultaneously, under the action of steam pressure, condensed water is pressurized and atomized at the atomizing nozzle, where it contacts the pre-oxidized wire cloth 60 and evaporates under heat. The multi-stage cooling design utilizes steam to achieve a triple cooling effect: first, high-speed steam cooling; second, the siphon effect introduces external airflow for uniform cooling; and finally, the evaporation of the atomized water achieves phase change heat absorption. In particular, the negative pressure generated by steam decompression drives the external airflow, making it more uniform, quieter, and less energy-intensive than a mechanical fan.

[0046] Specifically, such as Figure 2 As shown, the heat treatment chamber 13 includes a chamber body 131 fitted with an insulation shell 11 and two insulation side doors 12, and a number of transmission rollers 132 are rotatably installed in the chamber body 131. A plurality of insulation plates 133 for cooperating with the transmission rollers 132 to separate temperature intervals are fixed to the inner wall of the chamber body 131, and a heat radiator 134 is installed on the insulation plate 133. A heat conductive cover 70 is installed on one side of the heat treatment chamber 13.

[0047] The transmission roller 132 can transmit the pre-oxidized wire cloth 60, and the insulation plate 133 matched therewith can separate the interior of the warehouse 131 to form multiple temperature zones with different temperatures. The heat radiator 134 installed therein can heat the pre-oxidized wire cloth 60. The scheme shows a one-side installation method, and heat radiators 134 are installed on both sides of the pre-oxidized wire cloth 60, which is one of the foreseeable schemes.

[0048] Specifically, such as Figure 2 As shown, it also includes a driving component 20 that drives the pre-oxidized wire cloth 60 to move in multiple folds with low tension through a transmission roller 132 in the heat treatment chamber 13. The driving component 20 includes a sealing plate 21 fixed to the inner wall of the chamber body 131, and one end of the transmission roller 132 rotates on the sealing plate 21, and one end of the transmission roller 132 is fixed with a driven chain plate 24 that is synchronously driven by a chain, and a number of supporting chain plates 23 are provided in the chain to support it, and a precision control motor 22 is installed on one side of the corresponding supporting pressure plate to drive it.

[0049] The precise control of the precision motor 22 supports the chainring 23, and the driven chainring 24 is rotated by the chain drive. The low-tension folding conveying of the transmission can reduce the deformation caused by the tension of the pre-oxidized silk cloth 60.

[0050] Specifically, such as Figure 5 As shown, the temperature uniforming component 30 further includes a mounting frame 34 fixed on the corresponding heat-insulating side door 12 , and a power assembly 32 for driving the circulation unit 31 is mounted on the mounting frame 34 .

[0051] Specifically, such as Figure 6 As shown, the circulation unit 31 includes a pressure chamber 311 fixed on a mounting frame 34, and a centrifugal fan blade 315 is rotatably arranged in the pressure chamber 311. The bottom of the pressure chamber 311 is connected to an air inlet cover 314, and the air inlet cover 314 and one side of the pressure chamber 311 are respectively connected to an exhaust pipe 312 and a return air pipe 313, and the exhaust pipe 312 and the return air pipe 313 are respectively located on both sides of the corresponding temperature range and connected.

[0052] The centrifugal fan blades 315 rotate in the pressure chamber 311, creating a negative pressure in the air inlet hood 314, causing the air inlet hood 314 to extract air in the corresponding temperature range through the exhaust pipe 312, and at the same time, the air is returned to the temperature range through the return air pipe 313 connected to the pressure chamber 311. During this process, a heating wire is installed in the return air pipe 313 of the top circulation unit 31 for active temperature compensation. At the same time, temperature sensors are installed in all exhaust pipes 312 to monitor the ambient temperature in all temperature ranges.

[0053] At the same time, when necessary, there is a valve (not shown in the figure) on the lower surface of the air inlet cover 314. When the valve is opened, air can be admitted under the action of negative pressure, or it can be directly connected to an oxygen cylinder for use.

[0054] The power assembly 32 includes two drive shafts 324 axially fixed to a plurality of centrifugal blades 315, and a driven wheel 323 is fixed to the top of each of the two drive shafts 324. It also includes a driver 321 fixed on the mounting frame 34, and the output shaft of the driver 321 is equipped with a driving wheel 322 that cooperates with the two driven wheels 323 for transmission.

[0055] By setting up a power assembly 32, the driver 321 rotates the two driven wheels 323 through the driving wheel 322, and the driven wheels 323 rotate with the corresponding driving shafts 324, which can rotate multiple centrifugal fan blades 315 at the same time, keeping the air circulation rate in multiple temperature ranges consistent, and meeting the requirements of uniform environmental temperature control.

[0056] Specifically, such as Figure 6 As shown, the top end of the flow valve 33 is connected to the end of the return air pipe 313 in the high-pressure area of ​​the upper circulation unit 31, and the bottom end is connected to the end of the exhaust air pipe 312 in the low-pressure area of ​​the lower circulation unit 31.

[0057] By setting the flow valve 33, the opening of the flow valve 33 can be controlled so that the ventilation volume can be changed. Its two ends are respectively connected to the high-pressure area and the low-pressure area, which can meet the guidance and regulation of the airflow from high pressure to low pressure.

[0058] Specifically, such as Figure 4 As shown, the vaporization power assembly 41 further includes a condenser pipe 412 communicating with a water tank 411 and a water vapor separator 413 , and a pressure reducing valve 416 is provided at a portion of the water vapor separator 413 communicating with a high-speed air nozzle 414 .

[0059] By setting up the condenser 412, the steam can be partially condensed and clean condensed water can be extracted to meet the practical needs of subsequent cooling. At the same time, the pressure reducing valve 416 is used to reduce the pressure of the steam, maintain a high-pressure environment in the water vapor separator 413, and use the pressure to pressurize the condensed water into atomized form and spray it out.

[0060] Specifically, such as Figure 9 As shown, the temperature isolation component 42 includes a thermal insulation orifice plate 421 fixed on the inner wall of the warehouse body 131 and a thermal insulation slide 422 that slides against the thermal insulation orifice plate 421 to control its aperture opening. One end of the thermal insulation slide 422 is provided with a plurality of springs 423 for elastic support thereof, and a steel wire rope 424 for pulling its displacement is fixed on the thermal insulation slide 422.

[0061] By sliding the insulation slide plate 422 on the insulation orifice plate 421, its opening can be adjusted according to the displacement change, so that the temperature control is more stable. The spring 423 used is a high-temperature resistant spring 423. The steam volume is adjusted by the opening. The control using the wire rope 424 is more resistant to high temperatures than the electric push rod; one end of the wire rope 424 is fixed on the insulation shell 11. When the length is increased, the spring 423 is compressed, and when the length is reduced, the spring 423 is reset, which is convenient and quick to adjust.

[0062] Specifically, such as Figure 8 As shown, the quench box 50 also includes a box body 51 and a baffle 54 forming a partition between the guide frame 52 and the box body 51. An air outlet hood 55 is installed on one side of the box body 51. The air outlet hood 55 can guide and collect the superheated steam so that it can be recycled after a simple cooling process.

[0063] Pre-cooling rollers 56 are installed on the inner wall of the housing 51 to pre-cool and partition the pre-oxidized wire cloth 60. This solution utilizes a three-stage, progressively rapid cooling mechanism (approximately 300°C → approximately 200°C → approximately 100°C → within 50°C). The initial cooling of the pre-cooling rollers 56, combined with the 100°C steam, prevents embrittlement caused by direct water quenching.

[0064] During use, the insulation plate 133 cooperates with the transmission roller 132 to separate multiple temperature zones in the chamber 131, and the heat of the multiple temperature zones accumulates at the top due to thermal evaporation. The top circulation unit 31 extracts the airflow from the right side and then returns it from the left side, circulating the airflow to maintain uniform heat distribution. The outlet area of ​​the return air duct 313 of the top circulation unit 31 is equipped with a heating wire for temperature compensation of the temperature change of the chamber. Correspondingly, the exhaust ducts 312 of all circulation units 31 are equipped with temperature sensors for dynamically monitoring the temperature changes in the corresponding temperature zones.

[0065] The temperature gradually increases from bottom to top. Compared with the traditional method, the heat accumulated upward helps to maintain the temperature of the upper higher temperature zone, meet the pre-oxidation demand of gradually increasing temperature, and reduce the mutual influence of ambient temperature caused by the movement of the pre-oxidation wire cloth 60 between multiple temperature zones;

[0066] The two ends of the flow valve 33 are connected to the return air duct 313 and the exhaust air duct 312 corresponding to the adjacent circulation unit 31. Under the pressurization and decompression of the air inlet and outlet, the air flow is realized from high pressure to low pressure, and the flow rate is controlled by the flow valve 33 to realize the compensation control of the low temperature range. Part of the air flow in the upper high temperature temperature range is automatically compensated for the ambient temperature by passing the air flow in the circulation unit 31 to the relatively low temperature temperature range below, so that the difference between the ambient temperature of the pre-oxidation process and the thermal radiation temperature of the surface of the pre-oxidation wire cloth 60 is greatly reduced, forming a collaborative pre-oxidation thermal field with radiation heating as the main and compensation heat flow as the auxiliary, which greatly ensures the uniformity of the pre-oxidation treatment and shortens the overall pre-oxidation heating time.

[0067] At the same time, during the temperature compensation from top to bottom, the excess airflow at the bottom is discharged through the feed port on the left and collected by the heat conductive cover 70. Under the evaporation of the hot air, the hot airflow enters the top of the temperature isolation component 42 and heats the water tank 411. In conjunction with the change in the opening of the temperature isolation component 42, the airflow can flow downward to compensate, completing the internal reverse circulation of the airflow from top to bottom and avoiding heat loss. At the same time, the opening of the temperature isolation component 42 changes, and the heat can be radiated through the heating water tank 411 to achieve exhaust heat recovery and actively control the steam volume of the water tank 411. The steam heated by the water body can ensure the cleanliness of the water body and avoid the presence of impurities that may cause contamination during the rapid cooling process of the pre-oxidized wire cloth 60 and lead to quality problems.

[0068] The steam in the water tank 411 is partially condensed after passing through the condensation pipe 412. At this time, the steam is mixed with the condensed water and enters the water vapor separator 413. After the steam is blocked by the pressure reducing valve 416 in the water vapor separator 413, the residual steam is convected between the two guide frames 52 through the two high-speed air nozzles 414, and contacts both sides of the pre-oxidized wire cloth 60, carrying away the high heat on its surface to form superheated steam, making it difficult to condense in the box body 51 and discharged through the air outlet hood 55 (discharged to an external condensation device for recovery, the scheme is not shown). When cooling, the high-speed airflow at the top opening position of the two guide frames 52 produces a siphon effect below them, so that the space between the two guide frames 52 forms a negative pressure. The external airflow is acted upon by suction and enters through the openings on the front and back of the box body 51 (as shown in FIG. Figure 2 As shown, there are openings on both sides of the box body 51), after the air enters the box body 51, it passes through the plurality of air holes 53 on the two guide frames 52, forming a uniform airflow, and the airflow evenly contacts both sides of the pre-oxidized wire cloth 60 to achieve uniform cooling;

[0069] At the same time, under the action of the pressure reducing valve 416, high pressure is formed in the water vapor separator 413, and the clean condensed water is pressurized and sprayed evenly on the surface of the pre-oxidized wire cloth 60 through the atomizing nozzle 415, so that it is quickly cooled;

[0070] In summary, the pre-oxidized wire cloth 60 is first discharged and contacted with the pre-cooling roller 56 to be initially cooled to less than 300 degrees Celsius. The heat on the surface is taken away by the saturated steam after condensation and pressurization, so that its temperature drops to less than 200 degrees Celsius, and superheated steam is formed and discharged. Then the pre-oxidized wire cloth 60 contacts fine atomized water, so that the atomized water evaporates instantly without residue when it contacts its surface. Its surface temperature is quickly reduced to less than 100 degrees Celsius through the condensation and re-evaporation of water. Then, combined with the uniform airflow, the heat on the surface of the thinner pre-oxidized cloth is carried away, so that it is quickly cooled to below 50 degrees Celsius. This method realizes multi-stage rapid cooling coordination with high efficiency and reliable and stable cooling method.

[0071] 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 molding production device for preoxidized silk cloth, comprising a preoxidation box (10) consisting of an insulation shell (11), a heat treatment chamber (13) and two insulation side doors (12), and a temperature uniforming component (30) and a quenching box (50) are installed on one side of the preoxidation box (10), and further comprising a quenching component (40) arranged in the quenching box (50), wherein the heat treatment chamber (13) is provided with a plurality of temperature intervals, and wherein: The temperature-uniform component (30) includes a circulation unit (31) for independently circulating multiple temperature intervals and a flow valve (33) for communicating between adjacent circulation units (31); The heat treatment chamber (13) comprises a chamber body (131) fitted with a heat-insulating shell (11) and two heat-insulating side doors (12); The quenching assembly (40) includes a vaporization power assembly (41) and a temperature isolation assembly (42), wherein the vaporization power assembly (41) includes a water tank (411) installed on the top of the heat treatment chamber (13) and a water vapor separator (413) connected thereto, as well as a high-speed air nozzle (414) and an atomizing nozzle (415) for spraying water vapor to cool the pre-oxidized wire cloth (60); The temperature isolation component (42) includes a temperature-isolating orifice plate (421) fixed to the inner wall of the bin body (131) and a temperature-isolating slide plate (422) slidingly attached to the temperature-isolating orifice plate (421) to control the aperture of the orifice, a plurality of springs (423) for elastically supporting the temperature-isolating slide plate (422) are provided at one end thereof, and a steel wire rope (424) for pulling the temperature-isolating slide plate (422) is fixed to the temperature-isolating slide plate (422); The quench box (50) includes two guide frames (52) symmetrically arranged on both sides of the pre-oxidized wire cloth (60), and a plurality of air holes (53) are opened on the guide frames (52); The heat in multiple temperature zones accumulates upwards, and the two ends of the flow valve (33) automatically compensate the temperature by directing the air flow in the high-temperature zone circulation unit (31) to the low-temperature zone under the action of the positive and negative pressures of the air inlet and outlet of the adjacent circulation unit (31); The temperature isolation component (42) controls the steam volume of the water tank (411). After the steam enters the water vapor separator (413), the residual steam convects between the two guide frames (52) to form a siphon when cooling the pre-oxidized wire cloth (60). The external air flow is sucked through the plurality of air holes (53) and evenly contacts both sides of the pre-oxidized wire cloth (60). At the same time, under the action of steam pressure, condensed water is pressurized at the position of the atomizing nozzle and atomized to contact the pre-oxidized wire cloth (60) and then evaporated by heat.

2. The forming and production device of a pre-oxidized silk cloth according to claim 1, characterized in that: A plurality of transmission rollers (132) are rotatably mounted in the chamber body (131), a plurality of temperature-isolating plates (133) for cooperating with the transmission rollers (132) to separate temperature zones are fixed to the inner wall of the chamber body (131), and a heat radiator (134) is mounted on the temperature-isolating plates (133), and a heat-conducting cover (70) is mounted on one side of the heat treatment chamber (13).

3. The forming and production device of a pre-oxidized silk cloth according to claim 2, characterized in that: The invention also includes a driving assembly (20) for driving the pre-oxidized wire cloth (60) to move in a heat treatment chamber (13) through a transmission roller (132) in a low-tension multiple folding manner, wherein the driving assembly (20) includes a sealing plate (21) fixed to the inner wall of the chamber body (131), one end of the transmission roller (132) passes through and rotates on the sealing plate (21), and one end of the transmission roller (132) is fixed with a driven toothed disc (24) synchronously driven by a chain, and a plurality of supporting toothed discs (23) supporting the supporting disc are provided in the chain, and a precision control motor (22) for driving the supporting disc is installed on one side of the corresponding supporting pressure plate.

4. The forming and production device of a pre-oxidized silk cloth according to claim 1, characterized in that: The temperature-uniform component (30) further comprises a mounting frame (34) fixed on the corresponding heat-insulating side door (12), and a power assembly (32) for driving the circulation unit (31) is mounted on the mounting frame (34).

5. The forming and production device of a pre-oxidized silk cloth according to claim 4, characterized in that: The circulation unit (31) includes a pressure chamber (311) fixed on a mounting frame (34), and a centrifugal fan blade (315) is rotatably provided in the pressure chamber (311). The bottom of the pressure chamber (311) is connected to an air inlet cover (314), and the air inlet cover (314) and one side of the pressure chamber (311) are respectively connected to an exhaust pipe (312) and a return air pipe (313). The exhaust pipe (312) and the return air pipe (313) are respectively located on both sides of the corresponding temperature range and are connected.

6. The forming and production device of a pre-oxidized silk cloth according to claim 5, characterized in that: The power assembly (32) includes two drive shafts (324) axially fixed to a plurality of centrifugal blades (315), and driven wheels (323) are fixed to the top ends of the two drive shafts (324). The power assembly (32) also includes a driver (321) fixed on the mounting frame (34), and the output shaft of the driver (321) is equipped with a driving wheel (322) that is in transmission cooperation with the two driven wheels (323).

7. The forming and production device of a pre-oxidized silk cloth according to claim 5, characterized in that: The top end of the flow valve (33) is connected to the end of the return air pipe (313) in the high-pressure area of ​​the upper circulation unit (31), and the bottom end is connected to the end of the exhaust air pipe (312) in the low-pressure area of ​​the lower circulation unit (31).

8. The forming and producing device of a pre-oxidized silk cloth according to claim 2, characterized in that: The vaporization power assembly (41) further comprises a condenser (412) communicating with the water tank (411) and the water vapor separator (413), and a pressure reducing valve (416) is provided at a position of the water vapor separator (413) communicating with the high-speed air nozzle (414).

9. The forming and producing device of a pre-oxidized silk cloth according to claim 1, characterized in that: The quench box (50) further comprises a box body (51) and a baffle (54) forming a partition between the guide frame (52) and the box body (51); an air outlet hood (55) is installed on one side of the box body (51); and a pre-cooling roller (56) is installed on the inner wall of the box body (51) for pre-cooling the pre-oxidized wire cloth (60) and forming a partition.

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