A flat precured yarn production apparatus

Abstract

The application relates to a flat pre-oriented yarn production device and relates to the technical field of chemical fiber spinning devices. The device comprises a rack, a drying and crushing box, a sealing cover plate, a feeding port and a discharging box, further comprises a drying unit and a crushing unit, the drying unit comprises an upper layer mesh belt, a middle layer mesh belt, a lower layer mesh belt, a first driving motor, a second driving motor, a third driving motor and a drying mechanism; the crushing unit comprises a first crushing roller, a second crushing roller and a driving assembly. The material of the flat pre-oriented yarn production device enters the drying and crushing box through the feeding port first, is subjected to step-by-step drying treatment of the upper layer mesh belt, the middle layer mesh belt and the lower layer mesh belt, then reaches the crushing unit, is crushed by the first crushing roller and the second crushing roller, and finally is discharged through the discharging box, so that the whole process treatment from feeding to discharging is realized.

Description

Technical Field

[0001] This application relates to the field of chemical fiber spinning equipment technology, and in particular to a flat pre-oriented yarn production equipment. Background Technology

[0002] Pre-oriented yarn (POY) is an important intermediate product in chemical fiber production. Traditional POY is mostly circular in cross-section, while flat pre-oriented yarn, due to its special cross-sectional shape, has better luster, coverage, and softness, and is widely used in high-end textiles. Existing POY production equipment mostly uses circular spinnerets, which makes it difficult to directly produce flat cross-section yarns. Moreover, problems such as uneven cooling and yarn vibration are prone to occur during the spinning process, affecting product quality.

[0003] The related technology, disclosed in CN218812286U, provides a flat, porous, semi-dull, pre-oriented yarn production equipment, relating to the field of polyester spinning technology. This equipment includes a polymerization reaction unit and a spinning unit arranged sequentially. This invention stabilizes the cooling air supplied by the air conditioning fan through three sets of first pressure stabilizing boxes. The air supply is highly stable, detected by a first pressure sensor and adjusted in real-time by a first solenoid valve. The air then passes through a second pressure stabilizing box and is introduced into a ring-blown air cooler via an air pipe. Pressure fluctuations are minimized by real-time detection and adjustment via a second pressure sensor and a second solenoid valve. By reducing the size of the oil nozzle orifice in the oiler, the occurrence of abnormal product degradation, such as yarn jumping out of the oil nozzle, yarn breakage, and machine lint caused by wind interference, can be greatly reduced.

[0004] Regarding the design features of the flat pre-oriented yarn production equipment mentioned above, the inventors discovered that during the transportation of raw materials such as polyester chips, blockages may occur due to high material moisture content and agglomeration, affecting the normal supply of raw materials and consequently impacting production efficiency and product quality. Utility Model Content

[0005] In order to address the problem that current flat pre-oriented yarn production equipment has inherent design features, the inventors have discovered that during the transportation of raw materials such as polyester chips, blockages may occur due to high material moisture content and agglomeration, affecting the normal supply of raw materials and consequently impacting production efficiency and product quality. Therefore, this application provides a flat pre-oriented yarn production equipment.

[0006] The flat pre-oriented yarn production equipment provided in this application adopts the following technical solution: it includes a frame, a drying and crushing box fixedly installed on the upper end face of the frame, a sealing cover plate installed on the upper end face of the drying and crushing box, a feed inlet that passes through the sealing cover plate and connects to the drying and crushing box, and a discharge box installed on the lower end face of the drying and crushing box. It also includes a drying unit installed in the upper part of the drying and crushing box and a crushing unit installed in the lower part of the inner cavity of the drying and crushing box.

[0007] The drying unit is configured in the direction of material descent as follows: an upper mesh belt, a middle mesh belt, a lower mesh belt, a first drive motor for driving the upper mesh belt, a second drive motor for driving the middle mesh belt, a third drive motor for driving the lower mesh belt, and drying mechanisms respectively arranged between the upper, middle, and lower mesh belts.

[0008] The crushing unit includes a first crushing roller connected to the drying and crushing box, a second crushing roller disposed opposite to the first crushing roller, and a drive assembly for driving the first crushing roller and the second crushing roller.

[0009] By adopting the above technical solution, the material first enters the drying and crushing chamber through the feed inlet, and undergoes gradual drying treatment through the upper mesh belt, middle mesh belt and lower mesh belt. Then it reaches the crushing unit, where it is crushed by the first crushing roller and the second crushing roller. Finally, the material is discharged through the discharge box, thus realizing the whole process of material processing from feeding to discharging.

[0010] As a preferred embodiment, the drying mechanism is configured as a hot air duct circulating dryer, with the temperature of the upper mesh belt area being 75-85℃ and the wind speed being 1.2-1.8m / s;

[0011] The temperature in the middle mesh belt area is 95-105℃, and the wind speed is 2.0-3.0m / s;

[0012] The temperature in the lower mesh belt area is 55-65℃, and the wind speed is 0.5-1.0m / s.

[0013] By adopting the above technical solution, the hot air duct circulating drying mechanism achieves efficient material drying by adjusting the temperature and air velocity in different zones. The upper conveyor belt zone is set at a temperature of 75-85℃ and an air velocity of 1.2-1.8 m / s, suitable for preliminary preheating and drying of materials with low heat sensitivity, effectively improving drying efficiency and reducing heat damage. The middle conveyor belt zone is set at a temperature of 95-105℃ and an air velocity of 2.0-3.0 m / s, suitable for materials with high heat sensitivity, ensuring uniform heating and preventing localized overheating, thereby maintaining the quality and structural integrity of the material. The lower conveyor belt zone is controlled at a temperature of 55-65℃ and an air velocity of 0.5-1.0 m / s, suitable for materials with extremely high heat sensitivity, effectively drying materials at lower temperatures and greatly protecting them from heat damage.

[0014] As a preferred embodiment, the first drive motor, the second drive motor, and the third drive motor are each configured as servo motors. The speed ratio range of the first drive motor is 0.5-2.0 times the reference speed. The speed of the middle mesh belt is set to 0.6-0.8 times that of the upper mesh belt, and the speed of the lower mesh belt is 1.1-1.3 times that of the upper mesh belt.

[0015] By adopting the above technical solution, the first, second, and third drive motors are configured as servo motors. Precise control of each motor's speed enables accurate speed adjustment between different layers of the conveyor belt. Specifically, the first drive motor can adjust its speed within a range of 0.5 to 2.0 times the base speed, ensuring the overall flexibility and adaptability of the equipment. The middle conveyor belt is set to 0.6 to 0.8 times the speed of the upper conveyor belt, effectively improving the stability and uniformity of material passage and reducing potential uneven heating or cooling problems caused by excessive speed differences. Simultaneously, the lower conveyor belt's operating speed is set to 1.1 to 1.3 times that of the upper conveyor belt. This not only accelerates the processing but also improves overall production efficiency while ensuring stable material temperature.

[0016] As a preferred embodiment, a first crushing rotor is uniformly arranged on the outer periphery of the first crushing roller, and a second crushing rotor is uniformly arranged on the outer periphery of the second crushing roller. The tooth shape of the first crushing rotor and the second crushing rotor is a trapezoidal shearing tooth with a tooth apex angle of 55-65°. The first crushing rotor and the second crushing rotor are respectively staggered with each other.

[0017] By adopting the above technical solution, the first crushing rotor, with its outer circumference evenly arranged, and the second crushing rotor, with its outer circumference evenly arranged, jointly undertake the function of crushing the raw materials. The trapezoidal shear teeth design gives the crushing rotor stronger shearing and compressing capabilities. The trapezoidal shear teeth with a tooth tip angle of 55-65° effectively increase the contact strength between materials, improve crushing efficiency, and reduce material adhesion, resulting in more uniform and thorough crushing. The staggered arrangement of the first and second crushing rotors allows for more thorough fine crushing of the material during mutual compression, improving both the crushing effect and reducing energy consumption. This design, by enhancing shearing and compressing actions, effectively improves crushing efficiency and the quality of material processing.

[0018] As a preferred embodiment, the side wall of the drying and crushing chamber is provided with an anti-winding comb plate. The comb plate has a tooth spacing of 20mm, extends to 1 / 3 of the gap between the first crushing rotor and the second crushing rotor, and forms a 45° angle with the rotation direction of the first crushing rotor and the second crushing rotor.

[0019] By adopting the above technical solution, the sidewalls of the drying and crushing chamber are designed with anti-winding comb plates, the main function of which is to prevent materials from entangled on the rotors during the crushing process. The comb teeth on the comb plate have a spacing of 20mm. This spacing effectively prevents fine particles and fibrous materials from embedding between the first and second crushing rotors, avoiding clumping and ensuring smooth crushing. The depth of the comb teeth is just right, extending into 1 / 3 of the gap between the first and second crushing rotors, effectively intercepting entangled materials without excessively interfering with the normal operation of the rotors. In addition, the comb plate forms a 45° angle with the rotation direction of the rotor. This design helps to better guide the material flow and further reduce the possibility of entanglement. This design effectively solves the problem of increased equipment failure and maintenance frequency caused by material entanglement during the crushing process, improving the operating efficiency and service life of the equipment.

[0020] As a preferred embodiment, the drive assembly includes a first gear connected to the first crushing roller, a second gear connected to the second crushing roller, and a crushing motor directly connected to the first crushing roller. The crushing motor is configured as a geared motor and is fixedly mounted on the frame.

[0021] By adopting the above technical solution, the crushing motor provides power and, after reduction, directly drives the first crushing roller to rotate via the first gear; then, the second gear drives the second crushing roller to rotate through meshing, thereby achieving efficient crushing of materials. This design not only improves the crushing effect but also ensures the safe operation of the system and reasonable control of energy consumption.

[0022] As a preferred embodiment, the system also includes temperature and humidity sensors respectively disposed in the upper, middle and lower mesh belts;

[0023] A current monitoring module electrically connected to the crushing motor;

[0024] And a controller electrically connected to the temperature and humidity sensor and the current monitoring module;

[0025] The temperature and humidity sensor adjusts the speed of each conveyor belt via the controller based on the moisture content feedback.

[0026] The current monitoring module triggers the speed of the crushing motor through the controller based on the crushing current value.

[0027] By adopting the above technical solution, both the temperature and humidity sensors and the current monitoring module communicate with the controller. The controller adjusts the speed of each conveyor belt based on the data fed back by the temperature and humidity sensors, and simultaneously controls the speed of the crushing motor based on the crushing current value provided by the current monitoring module. Specifically, the temperature and humidity sensors are responsible for detecting the moisture content of the material and feeding the detection results back to the controller, which then adjusts the conveyor belt speed to optimize the drying effect. The current monitoring module monitors the current changes during the crushing process. When the current exceeds the normal range, the controller triggers the crushing motor to slow down or accelerate to ensure the safety and efficiency of the crushing process.

[0028] As a preferred embodiment, it also includes a waste heat recovery channel unit installed on the sealing cover plate to guide the high-temperature waste gas in the middle mesh belt to the upper mesh belt.

[0029] By adopting the above technical solution, the sealing cover ensures the airtightness of the device and prevents heat leakage. The waste heat recovery channel unit, as a key component, ensures that the exhaust gas can be smoothly transferred from the middle mesh belt to the upper mesh belt through effective airflow guidance, thereby achieving effective heat reuse. The overall working principle is as follows: During equipment operation, the high-temperature exhaust gas on the middle mesh belt is guided to a position adjacent to the upper mesh belt through the waste heat recovery channel unit. The waste heat is used to assist in the drying or heating process of the upper mesh belt, avoiding energy loss caused by direct heat emission, improving the energy utilization efficiency of the entire system, and achieving the goal of energy conservation and emission reduction.

[0030] As a preferred embodiment, the discharge port of the discharge box is equipped with an adjustable screen plate, and the screen hole size can be switched online from Φ5 to 15mm by a pneumatic device.

[0031] By adopting the above technical solution, when it is necessary to adjust the screen hole size, the user only needs to start the pneumatic device to drive the screen hole on the screen plate to adjust the corresponding size, ensuring that the material particle size meets the requirements every time it is discharged.

[0032] In summary, this application includes the following beneficial technical effects:

[0033] 1. The frame provides a stable foundation for the entire equipment; the drying and crushing chamber is used to hold the materials during the drying and crushing process; the sealing cover and feed inlet ensure smooth material input while maintaining the airtightness of the chamber; the discharge chamber is used to collect and discharge the dried and crushed materials.

[0034] 2. The drying unit includes an upper mesh belt, a middle mesh belt, a lower mesh belt, and three independent drive motors: a first drive motor, a second drive motor, and a third drive motor. The upper mesh belt, the middle mesh belt, and the lower mesh belt enable the material to pass through different drying stages in sequence, thereby improving the drying efficiency of the material layer by layer.

[0035] 3. The crushing unit consists of two opposing first and second crushing rollers and a drive assembly, which can effectively crush materials. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the overall structure of a flat pre-oriented yarn production equipment according to this application;

[0037] Figure 2 This application relates to a flat pre-oriented yarn production equipment. Figure 1 Another structural diagram from another perspective;

[0038] Figure 3 This is a partial half-sectional view of the overall structure of a flat pre-oriented yarn production equipment according to this application;

[0039] Figure 4 This application relates to a flat pre-oriented yarn production equipment. Figure 3 A structural schematic diagram of the front view.

[0040] Explanation of reference numerals in the attached drawings: 100, frame; 11, drying and crushing chamber; 12, discharge chamber; 101, feed inlet; 102, waste heat recovery unit; 31, upper mesh belt; 311, first drive motor; 32, middle mesh belt; 321, second drive motor; 33, lower mesh belt; 331, third drive motor; 41, drying unit; 42, temperature and humidity sensor; 51, first crushing roller; 511, first gear; 52, second crushing roller; 521, second gear; 53, crushing motor; 61, first crushing rotor; 62, second crushing rotor; 63, comb plate. Detailed Implementation

[0041] The present application will be further described in detail below with reference to the accompanying drawings.

[0042] Please refer to details. Figure 1 , Figure 2, Figure 3 and Figure 4 This application discloses a flat pre-oriented yarn production equipment. It includes a frame 100, a drying and crushing box 11 fixedly disposed on the upper end face of the frame 100, a sealing cover plate disposed on the upper end face of the drying and crushing box 11, a feed inlet 101 passing through the sealing cover plate and connected to the drying and crushing box 11, and a discharge box 12 disposed on the lower end face of the drying and crushing box 11. It also includes a drying unit 41 disposed in the upper part of the drying and crushing box 11 and a crushing unit disposed in the lower part of the inner cavity of the drying and crushing box 11.

[0043] The drying unit 41 is configured in sequence according to the falling direction of the material: an upper mesh belt 31, a middle mesh belt 32, a lower mesh belt 33, a first drive motor 311 for driving the upper mesh belt 31, a second drive motor 321 for driving the middle mesh belt 32, a third drive motor 331 for driving the lower mesh belt 33, and drying mechanisms respectively arranged in the intervals of the upper mesh belt 31, the middle mesh belt 32, and the lower mesh belt 33.

[0044] The crushing unit includes a first crushing roller 51 connected to the drying and crushing chamber 11, a second crushing roller 52 opposite to the first crushing roller 51, and a drive assembly for driving the first crushing roller 51 and the second crushing roller 52. The frame 100 provides a stable foundation support for the entire equipment. The drying and crushing chamber 11 is used to contain materials during the drying and crushing process. The sealing cover and feed inlet 101 ensure smooth material input while maintaining airtightness inside the chamber. The discharge chamber 12 is used to collect and discharge materials that have undergone drying and crushing treatment. The drying unit 41 includes an upper mesh belt 31, a middle mesh belt 32, a lower mesh belt 33, and independent first drive motors 311, 321, and 331. The upper mesh belt 31, middle mesh belt 32, and lower mesh belt 33 enable materials to pass through different drying stages sequentially, improving the drying efficiency of the materials layer by layer. The crushing unit consists of two oppositely arranged first crushing rollers 51 and second crushing rollers 52 and a drive assembly, which can effectively crush materials. The overall working principle is as follows: the material first enters the drying and crushing box 11 through the feed inlet 101, and is gradually dried by the upper mesh belt 31, the middle mesh belt 32 and the lower mesh belt 33. Then it reaches the crushing unit, where it is crushed by the first crushing roller 51 and the second crushing roller 52. Finally, the material is discharged through the discharge box 12, thus realizing the whole process of material processing from feeding to discharging.

[0045] In one embodiment, please refer to [specific example]. Figure 1 and Figure 2 The drying mechanism is set as a hot air duct circulating dryer, with the temperature of the upper mesh belt zone 31 at 75-85℃ and the wind speed at 1.2-1.8m / s;

[0046] The temperature in zone 32 of the middle layer mesh belt is 95-105℃, and the wind speed is 2.0~3.0m / s;

[0047] The lower conveyor belt zone 33 has a temperature of 55-65℃ and an air velocity of 0.5-1.0 m / s. The hot air duct circulating drying mechanism achieves efficient material drying by adjusting the temperature and air velocity in different zones. The upper conveyor belt zone 31 has a temperature of 75-85℃ and an air velocity of 1.2-1.8 m / s, suitable for preliminary preheating and drying of materials with low heat sensitivity, effectively improving drying efficiency and reducing heat damage. The middle conveyor belt zone 32 has a temperature of 95-105℃ and an air velocity of 2.0-3.0 m / s, suitable for materials with high heat sensitivity, ensuring uniform heating and preventing localized overheating, thus maintaining the quality and structural integrity of the material. The lower conveyor belt zone 33 has a temperature of 55-65℃ and an air velocity of 0.5-1.0 m / s, suitable for materials with extremely high heat sensitivity, effectively drying materials at lower temperatures and greatly protecting them from heat damage. The overall working principle is as follows: through the hot air duct circulation system, hot air of different temperatures and wind speeds is applied to the upper mesh belt 31, the middle mesh belt 32 and the lower mesh belt 33 respectively, to ensure that the materials in each layer can obtain suitable drying conditions, thereby achieving a high-efficiency, uniform and low-heat-damage drying effect.

[0048] In one embodiment, please refer to [specific example]. Figure 1 and Figure 2 The first drive motor 311, the second drive motor 321, and the third drive motor 331 are all configured as servo motors. The speed regulation range of the first drive motor 311 is 0.5-2.0 times the base speed. The speed of the middle mesh belt 32 is set to 0.6-0.8 times that of the upper mesh belt 31, and the speed of the lower mesh belt 33 is 1.1-1.3 times that of the upper mesh belt 31. By precisely controlling the speed of each motor, accurate speed adjustment between different layers of the mesh belt is achieved. Specifically, the first drive motor 311 can adjust its speed within a range of 0.5 to 2.0 times the base speed as needed, ensuring the overall flexibility and adaptability of the equipment. The middle mesh belt 32 is set to 0.6 to 0.8 times the speed of the upper mesh belt 31, effectively improving the stability and uniformity of material passage and reducing potential non-uniform heating or cooling problems caused by excessive speed differences. Meanwhile, the operating speed of the lower mesh belt 33 is set to 1.1 to 1.3 times that of the upper mesh belt 31. This not only accelerates the processing but also improves overall production efficiency while ensuring stable material temperature.

[0049] In one embodiment, please refer to [specific example]. Figure 3 and Figure 4 The first crushing roller 51 has a first crushing rotor 61 evenly arranged on its outer periphery, and the second crushing roller 52 has a second crushing rotor 62 evenly arranged on its outer periphery. The teeth of the first crushing rotor 61 and the second crushing rotor 62 are trapezoidal shear teeth with a tooth apex angle of 55°-65°. The first crushing rotor 61 and the second crushing rotor 62 are arranged alternately. The first crushing rotor 61 evenly arranged on the outer periphery of the first crushing roller 51 and the second crushing rotor 62 evenly arranged on the outer periphery of the second crushing roller 52 jointly undertake the function of crushing the raw materials. The trapezoidal shear tooth design gives the crushing rotor a stronger shearing and extrusion capacity. The trapezoidal shear teeth with a tooth apex angle of 55°-65° can effectively increase the contact strength between materials, improve crushing efficiency, and reduce material adhesion, making crushing more uniform and thorough. The alternate arrangement of the first crushing rotor 61 and the second crushing rotor 62 allows for more thorough fine crushing of the material during mutual extrusion, which not only improves the crushing effect but also reduces energy consumption. This design effectively improves crushing efficiency and material processing quality by enhancing shearing and extrusion.

[0050] In one embodiment, please refer to [specific example]. Figure 3 The drying and crushing chamber 11 has an anti-winding comb plate 63 on its side wall. The comb plate 63 has a tooth spacing of 20mm and extends to 1 / 3 of the gap between the first crushing rotor 61 and the second crushing rotor 62, forming a 45° angle with the rotation direction of the first crushing rotor 61 and the second crushing rotor 62. The main function of the anti-winding comb plate 63 on the side wall of the drying and crushing chamber 11 is to prevent materials from winding around the rotors during the crushing process. The 20mm tooth spacing on the comb plate 63 effectively prevents fine particles and fibrous materials from embedding between the first crushing rotor 61 and the second crushing rotor 62, avoiding the formation of agglomerates and ensuring the smooth operation of the crushing process. The depth of the comb teeth is just right, extending to 1 / 3 of the gap between the first crushing rotor 61 and the second crushing rotor 62, which can effectively intercept winding materials without excessively interfering with the normal operation of the rotors. In addition, the 45° angle between the comb plate 63 and the rotation direction of the rotor helps to better guide the material flow and further reduce the possibility of winding. This design effectively solves the problem of equipment failure and increased maintenance frequency caused by material entanglement during the crushing process, thereby improving the operating efficiency and service life of the equipment.

[0051] In one embodiment, please refer to [specific example]. Figure 3 and Figure 4The drive assembly includes a first gear 511 connected to the first crushing roller 51, a second gear 521 connected to the second crushing roller 52, and a crushing motor 53 directly connected to the first crushing roller 51. The crushing motor 53 is a geared motor and is fixedly mounted on the frame 100. The crushing motor 53 provides power and, after reduction, directly drives the first crushing roller 51 to rotate via the first gear 511. Then, the second gear 521 drives the second crushing roller 52 to rotate through meshing, thereby achieving efficient crushing of materials. This design not only improves the crushing effect but also ensures the safe operation of the system and reasonable control of energy consumption.

[0052] In one embodiment, please refer to [specific example]. Figure 4 It also includes temperature and humidity sensors 42 respectively installed in the upper mesh belt 31, middle mesh belt 32 and lower mesh belt 33;

[0053] A current monitoring module electrically connected to the crushing motor 53;

[0054] And a controller electrically connected to the temperature and humidity sensor 42 and the current monitoring module;

[0055] Temperature and humidity sensor 42 adjusts the speed of each conveyor belt through the controller based on the moisture content feedback.

[0056] The current monitoring module triggers the crushing motor 53 to rotate based on the crushing current value via the controller. Both the temperature and humidity sensor 42 and the current monitoring module communicate with the controller. The controller adjusts the speed of each conveyor belt based on the data fed back by the temperature and humidity sensor 42, and simultaneously controls the rotation speed of the crushing motor 53 based on the crushing current value provided by the current monitoring module. Specifically, the temperature and humidity sensor 42 detects the moisture content of the material and feeds the results back to the controller, which adjusts the conveyor belt speed accordingly to optimize the drying effect. The current monitoring module monitors current changes during the crushing process. When the current exceeds the normal range, the controller triggers the crushing motor 53 to slow down or accelerate to ensure the safety and efficiency of the crushing process. In summary, this system achieves dynamic optimization in the material handling process through real-time monitoring by the temperature and humidity sensor 42 and the current monitoring module, and fine-tuning by the controller, ensuring efficient and safe processing results.

[0057] In one embodiment, please refer to [specific example]. Figure 1 and Figure 2Additionally, it includes a waste heat recovery unit 102 installed on the sealing cover, which guides the high-temperature exhaust gas from the middle mesh belt 32 to the upper mesh belt 31. The sealing cover ensures the airtightness of the device, preventing heat leakage. The waste heat recovery channel unit, as a key component, ensures that the exhaust gas can be smoothly transferred from the middle mesh belt 32 to the upper mesh belt 31 through effective airflow guidance, thereby achieving effective heat reuse. The overall working principle is as follows: During equipment operation, the high-temperature exhaust gas on the middle mesh belt 32 is guided to a position adjacent to the upper mesh belt 31 through the waste heat recovery unit 102, utilizing the waste heat to assist in the drying or heating process of the upper mesh belt 31, avoiding energy loss caused by direct heat emission, improving the energy utilization efficiency of the entire system, and achieving the goal of energy saving and emission reduction.

[0058] In one embodiment, please refer to [specific example]. Figure 1 and Figure 4 The discharge port of the discharge box 12 is equipped with an adjustable screen plate (not shown in the attached figure). The screen hole size can be switched online from Φ5 to 15mm through a pneumatic device. When it is necessary to adjust the screen hole size, the user only needs to start the pneumatic device to drive the screen hole on the screen plate to adjust the corresponding size, ensuring that the material particle size meets the requirements every time it is discharged.

[0059] The implementation principle of a flat pre-oriented yarn production equipment according to an embodiment of this application is as follows: During use, the material first enters the drying and crushing chamber 11 through the feed inlet 101, and undergoes gradual drying treatment through the upper mesh belt 31, the middle mesh belt 32, and the lower mesh belt 33. Through the hot air circulation system, hot air of different temperatures and wind speeds is applied to the upper mesh belt 31, the middle mesh belt 32, and the lower mesh belt 33 respectively, ensuring that the material in each layer can obtain suitable drying conditions, thereby achieving a high-efficiency, uniform, and low-heat-damage drying effect. The crushing motor 53 provides power and, after deceleration, directly drives the first crushing roller 51 to rotate through the first gear 511. Then, the second gear 521 drives the second crushing roller 52 to rotate through meshing, thereby achieving efficient crushing of the material. The first crushing rotor 61, which is uniformly arranged on the outer periphery of the first crushing roller 51, and the second crushing rotor 62, which is uniformly arranged on the outer periphery of the second crushing roller 52, jointly undertake the function of crushing the raw materials. The trapezoidal shear teeth design gives the crushing rotor stronger shearing and compressing capabilities. The trapezoidal shear teeth with a tooth tip angle of 55-65° can effectively increase the contact strength between materials, improve crushing efficiency, and reduce material adhesion, making crushing more uniform and thorough.

[0060] During this process, temperature and humidity sensors 42 in each section of the upper mesh belt 31, middle mesh belt 32 and lower mesh belt 33 are responsible for detecting the moisture content of the material and feeding the detection results back to the controller. The controller adjusts the speed of the mesh belts accordingly to optimize the drying effect. The current monitoring module monitors the current changes during the crushing process. When the current exceeds the normal range, the controller will trigger the crushing motor 53 to slow down or speed up to ensure the safety and efficiency of the crushing process.

[0061] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A flat pre-oriented yarn production equipment, characterized in that: The device includes a frame (100), a drying and crushing chamber (11) fixedly installed on the upper surface of the frame (100), a sealing cover plate installed on the upper surface of the drying and crushing chamber (11), a feed inlet (101) that passes through the sealing cover plate and connects to the drying and crushing chamber (11), and a discharge chamber (12) installed on the lower surface of the drying and crushing chamber (11). It also includes a drying unit (41) installed in the upper part of the drying and crushing chamber (11) and a crushing unit installed in the lower part of the inner cavity of the drying and crushing chamber (11). The drying unit (41) is configured in the following order according to the falling direction of the material: an upper mesh belt (31), a middle mesh belt (32), a lower mesh belt (33), a first drive motor (311) for driving the upper mesh belt (31), a second drive motor (321) for driving the middle mesh belt (32), a third drive motor (331) for driving the lower mesh belt (33), and drying mechanisms respectively arranged in the intervals of the upper mesh belt (31), the middle mesh belt (32), and the lower mesh belt (33); The crushing unit includes a first crushing roller (51) connected to the drying and crushing box (11), a second crushing roller (52) disposed opposite to the first crushing roller (51), and a drive assembly for driving the first crushing roller (51) and the second crushing roller (52).

2. The flat pre-oriented yarn production equipment according to claim 1, characterized in that: The drying mechanism is configured as a hot air duct circulating dryer, with the temperature of the upper mesh belt (31) area being 75-85℃ and the wind speed being 1.2-1.8m / s; The temperature in the middle mesh belt (32) area is 95-105℃, and the wind speed is 2.0-3.0m / s; The temperature in the lower mesh belt (33) area is 55-65℃ and the wind speed is 0.5~1.0m / s.

3. The flat pre-oriented yarn production equipment according to claim 2, characterized in that: The first drive motor (311), the second drive motor (321) and the third drive motor (331) are respectively set as servo motors. The speed ratio range of the first drive motor (311) is 0.5-2.0 times the reference speed. The speed of the middle mesh belt (32) is set to 0.6-0.8 times that of the upper mesh belt (31). The speed of the lower mesh belt (33) is 1.1-1.3 times that of the upper mesh belt (31).

4. The flat pre-oriented yarn production equipment according to claim 3, characterized in that: The first crushing roller (51) is uniformly provided with a first crushing rotor (61) on its outer periphery, and the second crushing roller (52) is uniformly provided with a second crushing rotor (62) on its outer periphery. The tooth shape of the first crushing rotor (61) and the second crushing rotor (62) is a trapezoidal shearing tooth with a tooth tip angle of 55°-65°. The first crushing rotor (61) and the second crushing rotor (62) are respectively staggered.

5. The flat pre-oriented yarn production equipment according to claim 4, characterized in that: The side wall of the drying and crushing box (11) is provided with an anti-winding comb plate (63). The comb plate (63) has a tooth spacing of 20mm, extends to 1 / 3 of the gap between the first crushing rotor (61) and the second crushing rotor (62), and forms a 45° angle with the rotation direction of the first crushing rotor (61) and the second crushing rotor (62).

6. The flat pre-oriented yarn production equipment according to claim 5, characterized in that: The drive assembly includes a first gear (511) connected to the first crushing roller (51), a second gear (521) connected to the second crushing roller (52), and a crushing motor (53) directly connected to the first crushing roller (51). The crushing motor (53) is configured as a reduction motor and is fixedly mounted on the frame (100).

7. A flat pre-oriented yarn production equipment according to claim 6, characterized in that: It also includes temperature and humidity sensors (42) respectively installed in the upper mesh belt (31), middle mesh belt (32) and lower mesh belt (33). A current monitoring module electrically connected to the crushing motor (53); and a controller electrically connected to the temperature and humidity sensor (42) and the current monitoring module; The temperature and humidity sensor (42) adjusts the speed of each conveyor belt through the controller based on the moisture content feedback. The current monitoring module triggers the speed of the crushing motor (53) through the controller based on the crushing current value.

8. The flat pre-oriented yarn production equipment according to claim 7, characterized in that: It also includes a waste heat recovery unit (102) installed on the sealing cover plate.

Images