A drying apparatus and method for preparing flat es fibers

Abstract

The application discloses a kind of drying device and method for preparing flat ES fiber, it is related to fiber raw material drying processing technical field, including vertical lifting frame, the side of the vertical lifting frame is provided with rack, and the top of the rack is fixed with drying oven, and the lower end of the drying oven is installed with guide hopper, the side outer wall of the guide hopper near vertical lifting frame is installed with flap material controller one, the outlet end of flap material controller one and the right side outer wall of vertical lifting frame are interconnected, the right side outer wall of the upper end of vertical lifting frame is installed with and the top inlet of drying oven is interconnected with inclined chute.The application makes that polymer chip raw material is continuously lifted, dispersed, swept, collected and recycled again, to form a closed loop continuous processing flow, drying is uniform and thorough, all polymer chip raw material can reach and stabilize at the extremely low moisture content required by process, effectively ensure the stability of subsequent melt viscosity and excellent die spinnability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fiber raw material drying treatment, in particular to a drying device and method for preparing flat ES fiber. BACKGROUND

[0002] The drying treatment of flat ES fiber raw material is a key step to ensure fiber quality and production stability. Since the polymer chip is prone to absorb moisture during storage and transportation, if it is directly put into the high-temperature extrusion stage without drying, the moisture will quickly vaporize to form steam bubbles, causing uneven melt and triggering the hydrolytic degradation of molecular chains, which seriously affects the mechanical properties of the fiber. Therefore, a scientific and reasonable drying process must be used to remove the moisture in the raw material. The commonly used drying methods include hot air circulation drying and vacuum drying. The former uses dry air to continuously remove moisture by controlling appropriate temperature and humidity, ensuring uniform drying of the raw material. The latter realizes efficient water evaporation at a lower temperature by reducing the environmental pressure, reducing the degradation risk of heat-sensitive materials. During the drying process, the temperature, time and air flow rate should be reasonably adjusted to ensure that the moisture is completely removed, while avoiding excessive temperature causing thermal degradation of the material. After drying, the raw material needs to be sealed and stored in time to prevent re-moisture absorption and contamination;

[0003] As disclosed in the application publication No. CN117906367A, a kind of polyamide 6 fiber preparation with raw material drying device and its drying method, including drying oven, the front and rear sides of the top middle part of the drying oven are fixedly connected with feed inlet, the top of the drying oven is provided with air inlet on the left and right sides in matrix, the top of the inner cavity of the drying oven is fixedly connected with oil cylinder, the bottom of the output shaft of the oil cylinder is fixedly installed with fixed guide rail, by the adjusting effect of the turning component, by adjusting the turning shovel to vertical state, and relying on the input hot air realizes material drying, and the power of air realizes the relative departure of two turning shovels, the automatic paving of material is realized by the action of turning shovel, the whole process is automatically completed and can be carried out simultaneously with drying, avoid the problem that traditional device material appears to accumulate when drying affects drying effect, however, the above technical scheme is still gathered in drying oven in the process of use, polymer chip is usually in granular or flaky shape, when hot air circulation drying, due to gravity, chip raw material often naturally settles and gathers at the bottom or some areas of drying oven, forming dense accumulation, when hot air flows through drying oven, the first contact is the top material layer, this part of material can directly receive the heating and moisture evaporation of hot air, while the lower layer of material is covered by the upper layer of material, and the hot air is difficult to penetrate directly, resulting in blocked heat transfer, and the moisture is difficult to escape quickly, forming a drying dead angle, and the material is mixed violently in the moment of turning action of turning component, but during the action interval, the material is in static accumulation state again, and the amount of material that can be affected and exchanged by each turning is limited, and a considerable part of the material always stays in the core area where the air flow cannot effectively penetrate, so that the final moisture content required by the process cannot be reached. SUMMARY

[0004] The purpose of the present application is to provide a drying device and method for preparing flat ES fibers. The polymer chip raw material is continuously fed into the drying oven by the bucket lifting assembly and the inclined chute in the vertical lifting frame. The polymer chip raw material is first dispersed by the double three-blade spreader at the top of the drying oven. The hot air stream is supplied by the heat supply assembly through the tube-type ring spray assembly into the drying oven. The material at various stages of the falling process is sprayed and dried by the tube-type ring spray assembly. The dried material is again fed into the vertical lifting frame through the guide hopper and the flap material controller, and is continuously and cyclically fed back to the drying oven for processing, to achieve cyclic drying of the material, thereby solving the problems raised in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: a drying device for preparing flat ES fibers, comprising:

[0006] The vertical lifting frame is provided with a rack on one side, and a drying box is fixed to the top end of the rack, and a guide hopper is installed at the lower end of the drying box, a flap material controller I is installed on the outer wall of the side of the guide hopper, the outlet end of the flap material controller I and the right outer wall of the vertical lifting frame are in communication with each other, an inclined chute is installed on the upper right outer wall of the vertical lifting frame and is in communication with the top inlet of the drying box, a belt hopper lifting assembly is arranged in the vertical lifting frame and is used to send materials into the inclined chute, a reduction motor is installed on the lower back wall of the vertical lifting frame and is used to drive the belt hopper lifting assembly to work, and a discharging valve is installed at the bottom end of the guide hopper.

[0007] The double-position three-blade bulk material assembly is arranged at an upper position in the drying box, a tubular ring spray assembly is installed in the drying box below the double-position three-blade bulk material assembly, a hot air supply assembly is installed on the back wall of the drying box and is in communication with the air inlet end of the tubular ring spray assembly, a chain wheel three-shaft transmission assembly is installed between the belt hopper lifting assembly, the double-position three-blade bulk material assembly and the tubular ring spray assembly and is used to power connection, and a PLC control panel is electrically connected to the input end of the reduction motor, the hot air supply assembly and the flap material controller I and is installed on one side of the surface of the guide hopper.

[0008] Preferably, an upwardly-open feeding port is installed on the left outer wall of the vertical lifting frame, a flap material controller II is installed at the top opening position of the feeding port, a flap material controller III is installed at the top end of the flap material controller II, and a material storage box is installed at the top end of the flap material controller III; the flap material controller II, the flap material controller III and the flap material controller I have the same structure, and the input end of the flap material controller II and the flap material controller III is electrically connected to the output end of the PLC control panel.

[0009] Preferably, the flap material controller I includes an outer material box installed between the left outer wall of the guide hopper and the right outer wall of the vertical lifting frame, an inner guide material bladder fixed to the right port of the outer material box, and a stepping motor installed on one side of the surface of the outer material box; the driving shaft of the stepping motor extends into the inner part of the outer material box and is fixed with a gate plate; and the input end of the stepping motor is electrically connected to the output end of the PLC control panel.

[0010] Preferably, the belt hopper lifting assembly includes a lower multi-wedge roller, an upper multi-wedge roller and a multi-wedge belt installed between the lower multi-wedge roller and the upper multi-wedge roller, which are rotatably installed at the upper and lower positions in the vertical lifting frame; a plurality of scooping hoppers are installed at equal intervals on the outer wall of the multi-wedge belt; the driving shaft of the reduction motor is fixedly connected to one end of the lower multi-wedge roller; and the lower multi-wedge roller transmits rotary power to the double-position three-blade bulk material assembly and the tubular ring spray assembly through the chain wheel three-shaft transmission assembly.

[0011] Preferably, the double-position three-blade bulk material assembly comprises two rotating shafts rotatably installed at the upper position inside the drying box through the bearing seat, a semicircular screen frame fixed inside the drying box below the two rotating shafts, and a belt wheel transmission structure installed between the two rotating shafts, a transmission shaft is rotatably installed on the left outer wall of the drying box, a bevel gear reversing transmission structure for power connection is installed between the end of the transmission shaft and one of the bevel gear reversing transmission structures, and one end of the transmission shaft is connected with the chain wheel type three-shaft transmission assembly and the bucket type material lifting assembly.

[0012] Preferably, the semicircular screen frame is made of a stainless steel component.

[0013] Preferably, the column tube type ring spray assembly comprises a plurality of shunt pipes rotatably installed inside the drying box and a plurality of nozzles installed on the outer wall of one side of the shunt pipe, the extension line of the central axis of the shunt pipe and the extension line of the central axis of the rotating shaft are perpendicular on the vertical projection plane, one end of the shunt pipe penetrates to the outside of the drying box and is provided with a belt pulley, a transmission belt is sleeved between a plurality of belt pulleys, and one end of one of the shunt pipes is connected with the chain wheel type three-shaft transmission assembly and the bucket type material lifting assembly.

[0014] Preferably, the hot air supply assembly comprises a hollow back frame fixed on the back of the drying box, a plurality of heating chambers installed on the back wall of the hollow back frame, and a communication pipe installed at the lower end of the plurality of heating chambers, an electric heating pipe is installed in the heating chamber, a temperature sensor is installed on the inner wall of one side of the heating chamber, a conveying pump is installed on one side of the back of the hollow back frame, the air inlet end of the conveying pump is connected with one end of the communication pipe, the air outlet end of the conveying pump extends to the inside of the hollow back frame through a pipeline, one end of the shunt pipe away from the belt pulley extends to the inside of the hollow back frame, the electric heating pipe and the input end of the conveying pump are electrically connected with the output end of the PLC control panel, and the output end of the temperature sensor is electrically connected with the input end of the PLC control panel.

[0015] Preferably, three pulp plates are fixed on the outer circumferential surface of the rotating shaft at equal intervals.

[0016] The application also provides a drying method for preparing flat ES fibers using the drying device for preparing flat ES fibers.

[0017] S101: After confirming that the device is in good condition, start the device through the PLC control panel, and set the hot air supply temperature of the hot air supply assembly, the speed of the reduction motor, the working time of the device, and the opening and closing degree of the first flap material controller. A part of the rotary power of the reduction motor is directly transmitted to the belt bucket type material lifting assembly, and the other part of the rotary power of the reduction motor is transmitted to the double-position three-blade type bulk material assembly and the tube type ring spray assembly through the chain wheel type three-axis transmission assembly. At this time, the belt bucket type material lifting assembly starts to continuously scoop up the wet material from the vertical material lifting frame and convey it to the inlet at the top of the drying box through the inclined chute. The moment the material enters the drying box, the double-position three-blade type bulk material assembly at the top completely scatters the falling slice blocks, forming a uniform and dispersed waterfall-like material curtain.

[0018] S102: The tube type ring spray assembly sprays high-temperature dry hot air from multiple angles around the entire falling material curtain, ensuring that every slice is swept by high-speed airflow in all directions, and the moisture is instantly evaporated and taken away by the exhaust system.

[0019] S103: The dried material falls to the bottom of the drying box and is collected by the guide hopper. The first flap material controller accurately controls the discharge flow, and finally falls back into the vertical material lifting frame, completing a cycle. After that, the process of lifting, dispersing, spraying, and falling back repeats, realizing the cyclic drying of the material.

[0020] S104: After completing the drying of the material, turn off the first flap material controller and stop the work of the hot air supply assembly through the PLC control panel. The belt bucket type material lifting assembly conveys the last batch of material to the drying box and the guide hopper. Open the discharge valve and convey the high-quality dried slice with qualified moisture content to the downstream extruder hopper.

[0021] Compared with the prior art, the flat ES fiber preparation drying device and method has the advantages that: the polymer chip raw material is continuously sent into the drying box by the vertical lifting frame, the bucket lifting assembly, the inclined chute, the double-position three-blade bulk material assembly, the hot air supply assembly, the column tube type ring spraying assembly, the guide hopper, the flap material controller I and the discharge valve, etc. The polymer chip raw material is first dispersed by the double-position three-blade bulk material assembly at the top of the drying box, and then the hot air flow is sent into the drying box through the column tube type ring spraying assembly by the hot air supply assembly, and the raw material at each position during the falling process is sprayed and dried by the column tube type ring spraying assembly. The dried raw material is again sent into the vertical lifting frame through the guide hopper and the flap material controller I, and is continuously and circularly sent back to the drying box for processing, so as to realize large-scale circulation drying of the material. The polymer chip is not accumulated in the drying box waiting for the hot air to pass through the surface, but is continuously lifted, dispersed, sprayed, collected and recycled, thereby forming a closed continuous processing flow. The drying is uniform and thorough, and all the polymer chip raw materials can reach and stabilize at the extremely low water content required by the process, effectively ensuring the stability of the subsequent melt viscosity and excellent die spinnability. The mechanical properties, such as strength and elongation, of the finally produced ES fiber are more consistent and reliable.

[0022] The polymer chip raw material is continuously transported to the drying box by the bucket lifting assembly and the inclined chute, realizing continuous feeding and circulation processing of the material. The continuous circulation of the material flow effectively avoids the static accumulation of the raw material in the drying box, reduces the problem of difficult penetration of hot air and drying dead angle caused by accumulation. The raw material is exposed to the hot air environment in continuous motion, promoting uniform evaporation of water, significantly improving the uniformity and efficiency of drying. The double-position three-blade bulk material assembly effectively disperses the polymer chip entering the drying box, preventing the raw material from forming lumps or thick layer accumulation at the inlet. The dispersed raw material is distributed in the drying box in a more uniform state. This "particle level" contact efficiency cannot be matched by any static stirring drying, greatly increasing the contact area of the raw material and the hot air, ensuring that the heat history and drying conditions received by each chip in the whole batch of material are almost completely consistent, thereby ensuring the extreme uniformity of the water content of the final product, and providing raw material with excellent consistency for subsequent spinning.

[0023] Secondly, the hot air supply assembly and the column tube type ring spraying assembly uniformly spray hot air to the raw material at each position during the falling process, realizing efficient use of hot air. In traditional drying processes, hot air is often concentrated in certain areas, leading to uneven drying. The column tube type ring spraying design can cover a wider space, ensuring that the raw material can receive the action of hot air in the entire falling path, thereby promoting rapid evaporation and removal of water, and improving the drying speed of the device.

[0024] Finally, through the cooperation of the material guide hopper and the flap control device one, the flow and flow direction of the material in the drying process are effectively controlled, the stable conveying and uniform distribution of the material in the circulation process are ensured, that is, the conveying speed of the material is adjusted according to the needs, the material is prevented from being too fast accumulated or too slow retained, the flow state of the material is further optimized, and the continuity of the drying process is further optimized, meanwhile, the material is repeatedly exposed to the hot air for multiple times, so that the moisture can be gradually evaporated and carried away, the re-dampening phenomenon caused by insufficient drying at one time is avoided, and the drying quality of the raw material is further ensured. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a schematic diagram of the front view structure of the present application.

[0026] Figure 2 It is a schematic diagram of the three-dimensional structure of the present application Figure One .

[0027] Figure 3 It is a schematic diagram of the three-dimensional structure of the present application Figure Two .

[0028] Figure 4 It is a schematic diagram of the upper and lower isometric three-dimensional structure of the present application.

[0029] Figure 5 It is a schematic diagram of the front view structure of the present application.

[0030] Figure 6 It is a schematic diagram of the three-dimensional sectional structure of the present application.

[0031] Figure 7 It is a schematic diagram of the three-dimensional structure of the present application Figure Three .

[0032] Figure 8 It is a schematic diagram of the three-dimensional structure of the drying oven of the second embodiment of the present application.

[0033] Figure 9 It is a schematic diagram of the three-dimensional structure of the double-position three-blade bulk material total of the second embodiment of the present application Figure One .

[0034] Figure 10 It is a schematic diagram of the three-dimensional structure of the double-position three-blade bulk material total of the second embodiment of the present application Figure Two .

[0035] Figure 11 It is a schematic diagram of the three-dimensional structure of the hot air supply total of the third embodiment of the present application.

[0036] Figure 12 It is a schematic diagram of the three-dimensional structure of the column-tube type ring spray total of the third embodiment of the present application.

[0037] In the diagram: 1. Vertical material lifting frame; 101. Inclined material channel; 102. Feed inlet; 103. Flip-plate material controller II; 104. Flip-plate material controller III; 105. Storage bin; 2. Frame; 3. Drying box; 4. Guide hopper; 5. Flip-plate material controller I; 501. Outer material bin; 502. Inner guide hopper; 503. Stepper motor; 504. Gate; 6. Discharge valve; 7. Hopper-type material lifting assembly; 701. Lower multi-wedge roller; 702. Upper multi-wedge roller; 703. Multi-wedge belt; 704. Scoop hopper; 8. Double-position three-lobe bulk material assembly; 801. Rotating shaft; 802. Pulley drive structure; 8 03. Drive shaft; 804. Bevel gear reversing transmission structure; 805. Semi-circular screen frame; 8051. Perforated screen area; 8052. Material blocking area; 806. Slurry plate; 9. Tubular ring spray assembly; 901. Diverter pipe; 902. Nozzle; 903. Pulley; 904. Drive belt; 10. Sprocket-type three-axis transmission assembly; 11. Hot air supply assembly; 1101. Hollow back frame; 1102. Conveying pump; 1103. Heating chamber; 1104. Connecting pipe; 1105. Temperature sensor; 1106. Electric heating tube; 12. PLC control panel; 13. Gear motor. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0039] Example 1, by Figures 1 to 7 The present invention provides a drying apparatus for preparing flat ES fibers, comprising a vertical lifting frame 1, a frame 2 disposed on one side of the vertical lifting frame 1, and a drying chamber 3 fixed to the top of the frame 2. A guide hopper 4 is installed at the lower end of the drying chamber 3. A flip-plate feeder 5 is installed on the outer wall of the guide hopper 4 near the vertical lifting frame 1, the outlet end of the flip-plate feeder 5 being connected to the right outer wall of the vertical lifting frame 1. An inclined feed channel 101, connected to the top inlet of the drying chamber 3, is installed on the upper right outer wall of the vertical lifting frame 1. The vertical lifting frame 1 is equipped with a bucket-type lifting assembly 7 that feeds materials into the inclined material channel 101. A geared motor 13 for driving the bucket-type lifting assembly 7 is installed on the lower back wall of the vertical lifting frame 1. The vertical lifting frame 1 has a compact structure and makes full use of vertical space. With the cooperation of the bucket-type lifting assembly 7, it realizes the vertical lifting and storage of raw materials. Thus, through the vertical design, the raw materials can be continuously and stably transported to the inlet of the drying box 3, avoiding material accumulation and blockage problems, and meeting the needs of large-scale repeated drying of materials.

[0040] The bottom end of the guide hopper 4 is provided with a discharging valve 6, and an exhaust pipe is installed on the back wall of the drying box 3 to facilitate the removal of moisture through the external exhaust system.

[0041] The double-position three-blade bulk material assembly 8 is arranged at an upper position inside the drying box 3, and a tubular ring spray assembly 9 is installed inside the drying box 3 below the double-position three-blade bulk material assembly 8. A hot air supply assembly 11 is installed on the back wall of the drying box 3 and is in communication with the air inlet end of the tubular ring spray assembly 9. A chain wheel three-shaft transmission assembly 10 is installed between the bucket-type material lifting assembly 7, the double-position three-blade bulk material assembly 8, and the tubular ring spray assembly 9 for power connection. A PLC control panel 12 is installed on one side of the surface of the guide hopper 4 and is electrically connected to the input end of the reduction motor 13, the hot air supply assembly 11, and the flap material controller 5.

[0042] An upwardly open feed inlet 102 is installed on the left outer wall of the vertical material lifting frame 1, and a flap material controller 103 is installed at the top opening position of the feed inlet 102. A flap material controller 104 is installed at the top end of the flap material controller 103, and a material storage tank 105 is installed at the top end of the flap material controller 104. The flap material controllers 103, 104, and 5 have the same structure, and the input end of the flap material controllers 103 and 104 is electrically connected to the output end of the PLC control panel 12. Workers pour the polymer chip raw material to be dried into the material storage tank 105, and workers control the closing state of the flap material controllers 104 and 103 through the reduction motor 13. When feeding, workers first open the flap material controller 104 to make it in the normally open state, and then the polymer chip raw material in the material storage tank 105 enters the flap material controller 104. Thereafter, the flap material controller 104 is in the normally closed state through the PLC control panel 12, and the flap material controller 103 is in the normally open state, so that the polymer chip raw material enters the vertical material lifting frame 1 through the flap material controller 103 and the feed inlet 102. At this time, the device is in a relatively closed state.

[0043] The flap material controller 5 includes an outer material tank 501 installed between the left outer wall of the guide hopper 4 and the right outer wall of the vertical material lifting frame 1, an inner guide material tank 502 fixed at the right side port of the outer material tank 501, and a stepping motor 503 installed on one side of the surface of the outer material tank 501. The drive shaft of the stepping motor 503 extends into the interior of the outer material tank 501 and is fixed with a gate 504. The input end of the stepping motor 503 is electrically connected to the output end of the PLC control panel 12.

[0044] Taking the plate control material ware 5 as an example, the polymer chip raw material in the guide hopper 4 enters the inner guide bung 502, at this time the gate plate 504 is pressed on the outlet end of the inner guide bung 502, the staff controls the step motor 503 to work through the speed reducer 13, the step motor 503 drives the gate plate 504 to overturn, and then the outlet end of the inner guide bung 502 is opened, at this time the guide hopper 4 and the vertical material lifting frame 1 are connected, and the smooth transition of the material is realized.

[0045] When discharging, the staff needs to control the plate control material ware 5 to close, so that the polymer chip raw material is retained in the drying box 3 and the guide hopper 4, then the discharge valve 6 is opened, and the dried material can be discharged.

[0046] The bucket type material lifting assembly 7 includes a lower multi-wedge roller 701, an upper multi-wedge roller 702 rotatably installed at upper and lower positions inside the vertical material lifting frame 1, and a multi-wedge belt 703 installed between the lower multi-wedge roller 701 and the upper multi-wedge roller 702, a plurality of bucket scoops 704 are equidistantly installed on the outer wall of the multi-wedge belt 703, the driving shaft of the speed reducer 13 is fixedly connected with one end of the lower multi-wedge roller 701, and the lower multi-wedge roller 701 transmits rotary power to the double-position three-blade material scattering assembly 8 and the column tube type ring spraying assembly 9 through the chain wheel type three-shaft transmission assembly 10.

[0047] The drying method for preparing the flat ES fiber of the embodiment uses the drying device for preparing the flat ES fiber described above, and includes the following steps:

[0048] S101: After confirming that the device is in good condition, the staff starts the device through the PLC control panel 12, sets the hot air supply temperature of the hot air supply assembly 11, the rotating speed of the speed reducer 13, the device working time, and the opening and closing degree of the plate control material ware 5, a part of the rotary power of the speed reducer 13 is directly transmitted to the bucket type material lifting assembly 7, and the chain wheel type three-shaft transmission assembly 10 also transmits another part of the rotary power of the speed reducer 13 to the double-position three-blade material scattering assembly 8 and the column tube type ring spraying assembly 9, at this time the bucket type material lifting assembly 7 starts to continuously scoop the wet material from the vertical material lifting frame 1, and the wet material is transported to the inlet at the top of the drying box 3 through the inclined material channel 101, at the moment when the material enters the drying box 3, the double-position three-blade material scattering assembly 8 at the top completely scatters the falling chip clumps to form a uniform and dispersed waterfall-shaped material curtain;

[0049] S102: The column tube type ring spraying assembly 9 sprays high-temperature dry hot air from multiple angles around to the entire falling material curtain, ensuring that each chip is swept by high-speed airflow from all directions, and the moisture is instantly evaporated and taken away by the exhaust system;

[0050] S103: The dried material falls to the bottom of the drying box 3 and is collected by the guide hopper 4. The discharge flow rate is precisely controlled by the flip-plate material controller 5, and finally falls back into the vertical lifting frame 1 to complete one cycle. Then the process of lifting, dispersing, spraying, and falling back is repeated to achieve large-scale circulating drying of the material.

[0051] S104: After the material drying is completed, the staff will turn off the flap feeder 5 and stop the hot air supply assembly 11 through the PLC control panel 12. The bucket-type material lifting assembly 7 will transport the last batch of material to the drying box 3 and the guide hopper 4. The staff will open the discharge valve 6 and transport all the high-quality dried slices with qualified moisture content (which have reached extremely low and uniform moisture content) to the downstream extruder hopper.

[0052] Example 2, based on Example 1, is... Figure 8 , Figure 9 and Figure 10 The double-position three-lobe bulk material assembly 8 includes two rotating shafts 801 rotatably mounted inside the drying box 3 at an upper position via bearing seats, a semi-circular screen frame 805 fixed inside the drying box 3 below the two rotating shafts 801, and a belt drive structure 802 installed between the two rotating shafts 801. Three slurry plates 806 are fixed in a ring at equal intervals on the outer circumference of the rotating shafts 801.

[0053] A drive shaft 803 is rotatably mounted on the left outer wall of the drying chamber 3. A bevel gear reversing transmission structure 804 is installed between the end of the drive shaft 803 and one of the bevel gear reversing transmission structures 804 for power connection. One end of the drive shaft 803 is powered through a sprocket-type three-axis transmission assembly 10 and a bucket-type material lifting assembly 7. When the polymer chip raw material is fed into the drying chamber 3 and received by the semi-circular screen frame 805, the drive shaft 803 receives the rotational power from the geared motor 13 through the sprocket-type three-axis transmission assembly 10. Then, the drive shaft 803 drives one of the rotating shafts 801 to rotate through the bevel gear reversing transmission structure 804, while the other rotating shaft 801 rotates synchronously in the same direction under the drive of the pulley transmission structure 802. At this time, the rotating shaft 801 continuously moves the polymer chip raw material retained in the semi-circular screen frame 805 through the slurry plate 806.

[0054] The rotating paddle plate 806 disperses the raw materials into a more uniform distribution, preventing them from agglomerating and piling up. This increases the contact area between the raw materials and the hot air, promotes uniform drying, reduces drying dead zones, and improves drying efficiency and product quality.

[0055] The bottom end of the semicircular screen frame 805 is provided with a hole screen area 8051 at the left and right positions, and the bottom end of the semicircular screen frame 805 between the two hole screen areas 8051 is provided with a material blocking area 8052. The semicircular screen frame 805 is made of stainless steel material. The polymer chip raw material is pushed by the slurry plate 806 and falls through the hole screen area 8051 into the drying box 3, at this time, a material curtain is formed, and contacts with the hot air flow sprayed by the column-tube type ring spray assembly 9.

[0056] In example three, on the basis of example two, the column-tube type ring spray assembly 9 is given by Figure 11 and Figure 12 The column-tube type ring spray assembly 9 includes a plurality of shunt pipes 901 rotatably installed inside the drying box 3 through a bearing seat and a plurality of nozzles 902 installed on the outer wall of one side of the shunt pipe 901. The extension line of the central axis of the shunt pipe 901 and the extension line of the central axis of the rotating shaft 801 are perpendicular on the vertical projection plane. One end of the shunt pipe 901 penetrates to the outside of the drying box 3 and is provided with a belt pulley 903. A plurality of belt pulleys 903 are sleeved with a transmission belt 904. One end of one of the shunt pipes 901 is power-connected with the chain wheel type three-axis transmission assembly 10 and the bucket type material lifting assembly 7 through the chain wheel type three-axis transmission assembly 10 and the bucket type material lifting assembly 7.

[0057] The high-speed airflow can enter the shunt pipe 901 and continuously spray out through the nozzle 902, so that the material curtain can be sprayed and dried. During the process, the end of one of the shunt pipes 901 is power-connected with the chain wheel type three-axis transmission assembly 10, and the shunt pipe 901 drives the remaining shunt pipes 901 to rotate through the belt pulley 903 and the transmission belt 904. In this way, the multiple pipes rotate together and uniformly spray hot air flow to each area in the drying box 3 and the material guide hopper 4, realizing full coverage of hot air.

[0058] The spraying mode of the column-tube type ring spray assembly 9 can effectively remove the moisture on the surface of the raw material, enhance the heat exchange efficiency, and ensure the uniformity of hot air spraying and avoid local overheating due to the compact design structure of the column-tube type.

[0059] The hot air supply assembly 11 comprises a hollow back frame 1101 fixed on the back of the drying box 3, a plurality of heating chambers 1103 installed on the back wall of the hollow back frame 1101, and a plurality of communication pipes 1104 installed at the lower end of the heating chambers 1103. An electric heating pipe 1106 is installed in the heating chamber 1103. A temperature sensor 1105 is installed on the inner wall of one side of the heating chamber 1103. A delivery pump 1102 is installed on one side of the back of the hollow back frame 1101. The air inlet end of the delivery pump 1102 is connected with one end of the communication pipe 1104. The air outlet end of the delivery pump 1102 extends to the inside of the hollow back frame 1101 through a pipeline. The end of the shunt pipe 901 away from the pulley 903 extends to the inside of the hollow back frame 1101. The electric heating pipe 1106 and the input end of the delivery pump 1102 are electrically connected with the output end of the PLC control panel 12. The output end of the temperature sensor 1105 is electrically connected with the input end of the PLC control panel 12. When the hot air supply assembly 11 works, the staff turns on the electric heating pipe 1106 and the delivery pump 1102 through the PLC control panel 12. The electric heating pipe 1106 continuously heats the air in the heating chamber 1103. The delivery pump 1102 generates suction and continuously pumps hot air into the hollow back frame 1101. The hollow back frame 1101 continuously supplies hot air flow for the column tube type ring spray assembly 9. The temperature in the heating chamber 1103 is detected by the temperature sensor 1105 and fed back to the PLC control panel 12. Thus, it can be flexibly adjusted according to different raw materials and process requirements.

[0060] In use, the embodiment of the present application first confirms that the vertical lifting frame 1 is loaded with sufficient polymer chip raw materials to be dried, then visually checks the sealing of each pipeline and connection to ensure that there is no material blockage or air leakage, and the chain wheel type three-axis transmission assembly 10, the bucket type lifting assembly 7 and the flap material controller 5 run smoothly without jamming. After completing the mechanical inspection, the worker powers on the device through the PLC control panel 12 to ensure that the power part is running normally. After confirming that the device is in good condition, the worker starts the device through the PLC control panel 12 and sets the hot air supply temperature of the hot air supply assembly 11, the speed of the reduction motor 13, the working time of the device and the opening and closing degree of the flap material controller 5. The parameter setting should be combined with the specific process requirements to meet the drying efficiency and avoid overheating or mechanical damage of the raw materials. Part of the rotary power of the reduction motor 13 is directly transmitted to the bucket type lifting assembly 7, and the chain wheel type three-axis transmission assembly 10 also transmits another part of the rotary power of the reduction motor 13 to the double-position three-blade type bulk material assembly 8 and the tube type ring spray assembly 9. At this time, the bucket type lifting assembly 7 continuously scoops up the wet material from the vertical lifting frame 1 and transports it to the inlet at the top of the drying box 3 through the inclined chute 101. At the moment when the material enters the drying box 3, the double-position three-blade type bulk material assembly 8 at the top completely scatters the falling chip clumps to form a uniform and dispersed waterfall-like material curtain. At the same time, the tube type ring spray assembly 9 strongly sprays high-temperature dry hot air from multiple angles around the entire falling material curtain to ensure that each chip is swept by high-speed airflow from all directions, and the moisture is instantly evaporated and taken away by the exhaust system. The dried material falls to the bottom of the drying box 3 and is collected by the guide hopper 4, and the discharge flow is accurately controlled by the flap material controller 5, and finally falls back into the vertical lifting frame 1 to complete a cycle. After that, the process of lifting, dispersing, spraying and falling is repeated, realizing large-scale cyclic drying of the material. After completing the drying of the material, the worker closes the flap material controller 5 and stops the work of the hot air supply assembly 11 through the PLC control panel 12. The bucket type lifting assembly 7 transports the last batch of material to the drying box 3 and the guide hopper 4. The worker opens the discharge valve 6 and transports the high-quality dried chips with extremely low and uniform moisture content to the downstream extruder hopper, thereby providing reliable raw material guarantee for subsequent high-quality melt spinning.

[0061] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and illustrative figures, it should be apparent that the scope of the present application is not limited to these specific embodiments.

[0062] While the embodiments of the application have been shown and described herein, it will be understood by those skilled in the art that many changes, modifications, substitutions and alterations to these embodiments can be made without departing from the principles and spirits of the application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drying apparatus for preparing flat ES fibers, characterized in that, include: A vertical material lifting frame (1) is provided with a frame (2) on one side, and a drying box (3) is fixed at the top of the frame (2). A guide hopper (4) is installed at the lower end of the drying box (3). A flip-plate control device (5) is installed on the outer wall of the guide hopper (4) near the vertical material lifting frame (1). The outlet end of the flip-plate control device (5) is connected to the outer wall of the right side of the vertical material lifting frame (1). An inclined material channel (101) is installed on the upper right outer wall of the vertical lifting frame (1) and is connected to the top inlet of the drying box (3). The interior of the vertical lifting frame (1) is provided with a bucket-type lifting assembly (7) that feeds the material into the inclined material channel (101). A geared motor (13) for driving the bucket-type lifting assembly (7) is installed on the lower back wall of the vertical lifting frame (1). A discharge valve (6) is installed at the bottom of the guide hopper (4). A double-position tri-lobe bulk material assembly (8) is located at an upper position inside the drying chamber (3). A tubular ring spray assembly (9) is installed inside the drying chamber (3) below the double-position tri-lobe bulk material assembly (8). A hot air supply assembly (11) connected to the air inlet of the tubular ring spray assembly (9) is installed on the back wall of the drying chamber (3). A power supply is installed between the bucket-type lifting assembly (7), the double-position tri-lobe bulk material assembly (8), and the tubular ring spray assembly (9). The sprocket-type three-axis transmission assembly (10) is connected, and a PLC control panel (12) electrically connected to the input end of the geared motor (13), hot air supply assembly (11), and flip-plate material controller (5) is installed on one side of the surface of the guide hopper (4); the belt bucket type lifting assembly (7) includes a lower multi-wedge roller (701), an upper multi-wedge roller (702) rotatably installed at the upper and lower positions inside the vertical lifting frame (1), and a multi-wedge belt (703) installed between the lower multi-wedge roller (701) and the upper multi-wedge roller (702), the multi-wedge belt ( Several scooping hoppers (704) are installed at equal intervals on the outer wall of the 703. The drive shaft of the geared motor (13) is fixedly connected to one end of the lower multi-wedge roller (701). The lower multi-wedge roller (701) transmits rotational power to the double-position three-lobe bulk material assembly (8) and the tubular ring spray assembly (9) through the sprocket-type three-axis transmission assembly (10). The double-position three-lobe bulk material assembly (8) includes two rotating shafts (801) rotatably installed in the upper position inside the drying box (3) through bearing seats, and a drying... The drying box (3) has a fixed semi-circular screen frame (805) and a pulley drive structure (802) installed between two rotating shafts (801). A drive shaft (803) is rotatably installed on the left outer wall of the drying box (3). A bevel gear reversing drive structure (804) for power connection is installed between the end of the drive shaft (803) and one of the bevel gear reversing drive structures (804). One end of the drive shaft (803) is powered through a sprocket-type three-shaft drive assembly (10) and a bucket-type material lifting assembly (7).

2. The drying apparatus for preparing flat ES fibers according to claim 1, characterized in that: The vertical material lifting frame (1) has an upward-facing feed inlet (102) installed on the left outer wall. A flip-plate material controller two (103) is installed at the top opening of the feed inlet (102). A flip-plate material controller three (104) is installed at the top of the flip-plate material controller two (103). A storage box (105) is installed at the top of the flip-plate material controller three (104). The flip-plate material controller two (103), flip-plate material controller three (104), and flip-plate material controller one (5) have the same structure. The input terminals of the flip-plate material controller two (103) and flip-plate material controller three (104) are electrically connected to the output terminal of the PLC control panel (12).

3. The drying apparatus for preparing flat ES fibers according to claim 2, characterized in that: The flip-plate material controller (5) includes an outer material box (501) installed between the left outer wall of the guide hopper (4) and the right outer wall of the vertical lifting frame (1), an inner guide hopper (502) fixed at the right port of the outer material box (501), and a stepper motor (503) installed on one side of the surface of the outer material box (501). The drive shaft of the stepper motor (503) extends into the interior of the outer material box (501) and is fixed with a gate (504). The input end of the stepper motor (503) is electrically connected to the output end of the PLC control panel (12).

4. The drying apparatus for preparing flat ES fibers according to claim 1, characterized in that: The semi-circular screen frame (805) has perforated areas (8051) at the left and right positions of the bottom end, and a baffle area (8052) is provided at the bottom end of the semi-circular screen frame (805) between the two perforated areas (8051). The semi-circular screen frame (805) is made of stainless steel.

5. The drying apparatus for preparing flat ES fibers according to claim 1, characterized in that: The tubular ring spray assembly (9) includes several diversion pipes (901) rotatably installed inside the drying chamber (3) via bearing seats and several nozzles (902) installed on the outer wall of one side of the diversion pipes (901). The extension line of the central axis of the diversion pipe (901) and the extension line of the central axis of the rotating shaft (801) are perpendicular to each other on the vertical projection plane. One end of the diversion pipe (901) extends through to the outside of the drying chamber (3) and is equipped with a pulley (903). A transmission belt (904) is fitted between several pulleys (903). One end of one of the diversion pipes (901) is powered by a sprocket-type three-axis transmission assembly (10) and a bucket-type material lifting assembly (7).

6. The drying apparatus for preparing flat ES fibers according to claim 5, characterized in that: The hot air supply assembly (11) includes a hollow back frame (1101) fixed to the back of the drying chamber (3), several heating chambers (1103) installed on the back wall of the hollow back frame (1101), and connecting pipes (1104) installed at the lower ends of the heating chambers (1103). Electric heating tubes (1106) are installed inside the heating chambers (1103). A temperature sensor (1105) is installed on one inner wall of one side of the heating chamber (1103). A delivery pump (1102) is installed on one side of the back of the hollow back frame (1101) to deliver... The air inlet of the pump (1102) is connected to one end of the connecting pipe (1104). The air outlet of the delivery pump (1102) extends through a pipe into the interior of the hollow back frame (1101). The end of the diverter pipe (901) away from the pulley (903) extends into the interior of the hollow back frame (1101). The input end of the electric heating tube (1106) and the delivery pump (1102) are electrically connected to the output end of the PLC control panel (12). The output end of the temperature sensor (1105) is electrically connected to the input end of the PLC control panel (12).

7. The drying apparatus for preparing flat ES fibers according to claim 1, characterized in that: Three paddle plates (806) are fixed in a ring at equal intervals on the outer circumference of the rotating shaft (801).

8. A drying method for preparing flat ES fibers, using the drying apparatus for preparing flat ES fibers as described in any one of claims 1-7, characterized in that: Includes the following steps: S101: Start the device through the PLC control panel (12) and set the hot air supply temperature of the hot air supply assembly (11), the speed of the geared motor (13), the working time of the device and the opening and closing degree of the flip plate control device (5). Part of the rotational power of the geared motor (13) is directly transmitted to the bucket-type lifting assembly (7). At the same time, the chain wheel type three-axis transmission assembly (10) will also transmit another part of the rotational power of the geared motor (13) to the double-position three-blade bulk material assembly (8) and the tube-type ring spray assembly (9). At this time, the bucket-type lifting assembly (7) starts to continuously scoop up the wet material from the vertical lifting frame (1) and transport it to the top entrance of the drying box (3) through the inclined material channel (101). The moment the material enters the drying box (3), the double-position three-blade bulk material assembly (8) at the top completely breaks up the falling slices and clumps, forming a layer of uniformly dispersed waterfall-like material curtain. S102: The tubular ring spray assembly (9) powerfully sprays high-temperature drying hot air from multiple angles onto the entire falling screen, ensuring that each slice is swept by high-speed airflow from all directions, and the moisture is instantly evaporated and carried away by the exhaust system. S103: The dried material falls to the bottom of the drying box (3) and is collected by the guide hopper (4). The discharge flow rate is precisely controlled by the flip plate control device (5), and finally falls back into the vertical lifting frame (1) to complete one cycle. Then the process of lifting, dispersing, spraying, and falling back is repeated to realize the cyclic drying of the material. S104: After the material drying is completed, the flip plate feeder (5) is turned off and the hot air supply assembly (11) is stopped through the PLC control panel (12). The bucket-type material lifting assembly (7) transports the last batch of material to the drying box (3) and the guide hopper (4). The discharge valve (6) is opened to transport all the high-quality dried chips with qualified moisture content to the downstream extruder hopper.

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