Degradable polyester fiber production device

Abstract

The utility model discloses a degradable polyester fiber production device which comprises a screw extruder, a slice drying tower, a master batch drying tower and a batching machine, the slice drying tower and the master batch drying tower are both connected to the batching machine through pipelines, the batching machine is connected to the screw extruder through a pipeline, and a temperature control conveying pipeline is adopted as a connecting pipeline of the master batch drying tower and the batching machine. The temperature control conveying pipeline comprises a main pipe body and an air cooling assembly, the main pipe body can circulate and convey master batches, the air cooling assembly is installed on the main pipe body, and the air cooling assembly can convey cooling air into the main pipe body. The device can ensure normal production of degradable polyester fibers, and the temperature control conveying pipeline has the advantages of being convenient and fast to assemble and disassemble, and facilitates daily maintenance work.

Description

Technical Field

[0001] The utility model relates to the technical field of spinning production, and more specifically, to a degradable polyester fiber production device. Background Art

[0002] At present, the global polyester industry is growing rapidly. my country is the world's largest polyester (PET) producer and consumer. The annual output of polyester fiber has increased year by year, and the total polyester production capacity has exceeded 60 million tons. The development of the polyester industry has raised an unavoidable problem for people: the source of materials and waste treatment. According to incomplete statistics, the annual accumulation of waste textiles in my country exceeds 20 million tons, but the recycling rate is less than 10%. At present, enterprises use waste textiles as raw materials to produce recycled differentiated polyester fibers, realizing closed-loop production and effectively solving the problem of textile recycling.

[0003] In the production process of a variety of differentiated functional fibers, different functional masterbatches need to be added. These degradable masterbatches have the characteristics of low viscosity and low melting point. The high-temperature masterbatches after drying need to be transported through channel pipes. In the transportation pipes, friction will occur between the masterbatches and between the masterbatches and the pipe walls. The friction will cause the temperature of the masterbatch to rise and melt and stick together, which will greatly affect the normal production of spinning. It is a difficult problem that needs to be solved urgently in the production of degradable polyester fibers. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the above-mentioned prior art and provide a degradable polyester fiber production device. The device controls the temperature of the masterbatch through an air-cooling structure design, so that the circulation problem of the low-melting-point masterbatch in the pipeline is better solved. The device can ensure the normal production of the degradable polyester fiber.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A degradable polyester fiber production device comprises a screw extruder, a chip drying tower, a masterbatch drying tower, and a batching machine. The chip drying tower and the masterbatch drying tower are both connected to the batching machine through pipelines, and the batching machine is connected to the screw extruder through pipelines. The connecting pipeline between the masterbatch drying tower and the batching machine adopts a temperature-controlled conveying pipeline, and the temperature-controlled conveying pipeline comprises a main pipe and an air-cooling component. The main pipe can circulate and convey masterbatch. The air-cooling component is installed on the main pipe and can convey cooling air into the main pipe.

[0007] Furthermore, the air cooling component includes an air inlet pipeline and an air return pipeline, the air inlet pipeline and the air return pipeline are both connected to the interior of the main pipe body, and the air inlet pipeline is installed with a control valve.

[0008] Furthermore, the temperature-controlled conveying pipeline also includes a circulation pipe seat, which is inserted into the main pipe body. The circulation pipe seat includes an upper disk body and a lower disk body, and the upper disk body and the lower disk body are arranged in parallel. A plurality of circulation pipes are connected and installed between the upper disk body and the lower disk body. The inner hole of the circulation pipe is through, and the masterbatch can be circulated and transported through the circulation pipe.

[0009] Furthermore, the inner hole diameter of the circulation tube is set to 1.3-1.5 times the standard masterbatch particle size.

[0010] Furthermore, the temperature-controlled conveying pipeline also includes a material guide seat and a threaded pressure plate, a mounting groove is opened at one end of the main body, the outer diameter size of the upper disk body of the circulation tube seat matches the inner diameter size of the mounting groove, the outer diameter size of the lower disk body of the circulation tube seat matches the inner hole size of the main body, the upper disk body is clamped in the mounting groove, the material guide seat is stacked on the top of the upper disk body, the mounting groove is provided with a threaded section, the threaded pressure plate is threadedly connected to the mounting groove, the threaded pressure plate can be pressed and installed on the material guide seat, and a plurality of material guide holes are opened on the material guide seat, and the number and opening positions of the material guide holes match the circulation tube.

[0011] Furthermore, the material guide hole is a tapered hole, the size of the small opening of the material guide hole matches the size of the inner hole of the circulation tube, and the material guide seat is installed with the small opening of the material guide hole facing the circulation tube seat.

[0012] Furthermore, the upper disk body is provided with a plurality of positioning holes, the material guide seat is connected with a plurality of positioning pins, and the positioning pins can be inserted into the positioning holes one by one, and at this time, the small openings of the material guide holes can be connected with the inner holes of the circulation pipe.

[0013] Furthermore, one side of the material guide seat has an uneven structure, and the uneven structure is designed on the side of the disk where the large opening of the material guide hole is located, and the large opening position of the material guide hole corresponds to the concave point of the disk surface.

[0014] Furthermore, a ventilation space is formed between the main pipe and the flow pipe, and the air inlet pipeline and the air return pipeline are both connected to the ventilation space.

[0015] The beneficial effects of the utility model are:

[0016] 1. The utility model is designed with a temperature-controlled conveying pipeline to solve the problem of conveying masterbatches. The circulation pipe in the temperature-controlled conveying pipeline can only accommodate a single masterbatch to pass through, which can effectively reduce the circulation friction problem between masterbatches. At the same time, a large number of circulation pipes will not affect the transportation of masterbatches. The temperature-controlled conveying pipeline is also designed with an air-cooling structure, which cools the circulation pipe by inputting a controllable flow of cold air. The cooling effect directly affects the masterbatch circulating in the pipe, and solves the problem of friction and temperature rise between the masterbatch and the pipeline wall. The use of the temperature-controlled conveying pipeline can greatly improve the fluidity of the masterbatch, solve the problem of conveying the masterbatch, and ensure the normal production of degradable polyester fibers.

[0017] 2. The temperature-controlled delivery pipeline of the utility model has the advantages of convenient assembly and disassembly, which is conducive to daily maintenance work. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a structural schematic diagram of a degradable polyester fiber production device in this embodiment;

[0019] Figure 2 is a cross-sectional structural diagram of the temperature-controlled delivery pipeline in this embodiment;

[0020] Figure 3 is a cross-sectional structural diagram of the main pipe body in this embodiment;

[0021] Figure 4 is a cross-sectional structural diagram of the flow pipe seat in this embodiment;

[0022] Figure 5 It is a cross-sectional structural diagram of the material guide seat in this embodiment.

[0023] Figure numerals: screw extruder 1, chip drying tower 2, masterbatch drying tower 3, batching machine 4, temperature control conveying pipeline 5, main body 51, mounting groove 511, threaded section 512, air cooling component 52, air inlet duct 521, return air duct 522, control valve 523, circulation pipe seat 53, upper disk body 531, positioning hole 5311, lower disk body 532, circulation pipe 533, material guide seat 54, material guide hole 541, positioning pin 542, threaded pressure plate 55, ventilation space 56. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] like Figure 1-Figure 5The biodegradable polyester fiber production device shown in the figure includes a screw extruder 1, a chip drying tower 2, a masterbatch drying tower 3, and a batching machine 4. The chip drying tower 2 is used for drying the regenerated semi-light chip material, and the masterbatch drying tower 3 is used for drying the degradable functional masterbatch. The chip drying tower 2 and the masterbatch drying tower 3 are both connected to the batching machine 4 through pipelines. The dried regenerated semi-light chips and degradable masterbatch are both transported to the batching machine 4. The batching machine 4 is connected to the screw extruder 1 through pipelines. In the batching machine 4, the chips and the masterbatch are mixed according to the weight ratio, and then output to the screw extruder 1 for the biodegradable polyester fiber. In the production, in the present device, there is a frictional temperature rise in the masterbatch conveying link. The temperature rise of the masterbatch will cause melting and adhesion, which will greatly affect the normal production of spinning and is a difficult problem that needs to be solved urgently in the production of degradable polyester fibers. In the present device, the connecting pipeline of the masterbatch drying tower 3 and the batching machine 4 adopts a temperature-controlled conveying pipeline 5 to solve the temperature rise problem of the masterbatch during transportation. The temperature-controlled conveying pipeline 5 includes a main body 51 and an air-cooling component 52. The main body 51 can circulate and convey the masterbatch. The air-cooling component 52 is installed on the main body 51. The air-cooling component 52 can convey cooling air into the main body 51. Figure 3 As shown, the air cooling component 52 includes an air inlet duct 521 and an air return duct 522, both of which are connected to the interior of the main body 51, the air inlet duct 521 is responsible for inputting cooling air, and the return air duct 522 is used to discharge hot air, and the input cold air can cool the masterbatch to keep its integrity, so as to improve its fluidity in the pipeline, and a control valve 523 is installed on the air inlet duct 521, and the control valve 523 can control the cooling air flow to meet the requirements of precise cooling. Although the above scheme can improve the fluidity of the masterbatch in the pipeline, it has very high requirements for the cooling air, and the cooling air needs to be clean and dry, otherwise the input cooling air will contaminate the masterbatch, wet the masterbatch, and have a counter-effect. When the cooling air has extremely high requirements, the modification cost is relatively high.

[0026] Therefore, the utility model further improves the structure of the temperature control delivery pipeline 5, such as Figure 4 As shown, the temperature-controlled conveying pipeline 5 also includes a circulation pipe seat 53, which is inserted into the main body 51. The circulation pipe seat 53 includes an upper plate body 531 and a lower plate body 532. The upper plate body 531 and the lower plate body 532 are arranged in parallel. A plurality of circulation pipes 533 are connected and installed between the upper plate body 531 and the lower plate body 532. The inner holes of the circulation pipes 533 are through. After the circulation pipe seat 53 is installed, the upper plate body 531 and the lower plate body 532 block the two ends of the main body 51, and the masterbatch can only be circulated and transported from the circulation pipe 533. The inner hole diameter of the circulation pipe 533 is set to 1.3-1.5 times the particle size of the standard masterbatch, which does not affect the fluidity of the masterbatch and allows the masterbatch to pass through one by one. This can greatly reduce the probability of friction between the masterbatch and the probability of temperature rise in this regard. Figure 2As shown, a ventilation space 56 is formed between the main body 51 and the circulation tube 533, and the air inlet duct 521 and the air return duct 522 are both connected to the ventilation space 56. The cooling air input by the air inlet duct 521 flows on the outside of the circulation tube 533, and the masterbatch is transported inside the circulation tube 533. The cooling air does not contact the masterbatch, but a cooling effect can still be formed (the circulation tube 533 is made of a material with good temperature conductivity). In this way, the cooling air does not need to have very high requirements, which can greatly save the modification cost and meet the production needs. Moreover, the direct cooling of the tube wall of the circulation tube 533 is also beneficial to controlling the temperature rise generated by the masterbatch and the tube wall of the circulation tube 533. The utility model designs a large number of circulation tubes 533, which does not affect the transportation of the masterbatch.

[0027] like Figure 2 As shown, the temperature-controlled conveying pipeline 5 also includes a material guide seat 54 and a threaded pressure plate 55. A mounting groove 511 is provided at one end of the main body 51. The outer diameter of the upper plate 531 of the circulation tube seat 53 matches the inner diameter of the mounting groove 511. The outer diameter of the lower plate 532 of the circulation tube seat 53 matches the inner hole size of the main body 51. The lower plate 532 of the circulation tube seat 53 plays a guiding role during insertion. The outer diameter of the upper plate 531 of the circulation tube seat 53 is larger than the lower plate 532. The upper plate 531 is clamped in the mounting groove 511, which can play a role in installation and positioning of the circulation tube seat 53. The material guide seat 54 is stacked on the upper plate 531. The mounting groove 511 is provided with a threaded section 512. The threaded pressure plate 55 is threadedly connected to the mounting groove 511. The threaded pressure plate 55 can be tightly installed on the material guide. On the seat 54, when the temperature-controlled conveying pipeline 5 is assembled, the circulation pipe seat 53 is first inserted, and then the material guide seat 54 is installed, and finally the threaded pressure plate 55 is screwed in and tightened, so that the above three are firmly pressed together. The combined structure is very simple, which is conducive to the assembly and disassembly operations of the temperature-controlled conveying pipeline 5 (after long-term use, an impurity layer will adhere to the outer tube wall of the circulation pipe 533, affecting the cooling effect, so daily maintenance and disassembly of the temperature-controlled conveying pipeline 5 are required). A plurality of material guide holes 541 are provided on the material guide seat 54. The number and position of the material guide holes 541 match those of the circulation pipe 533. The inner hole diameter of the circulation pipe seat 53 is relatively small. In order to facilitate the smooth entry of the masterbatch into the circulation pipe 533 for transportation, the material guide hole 541 structure of the material guide seat 54 is specially designed to meet the demand for drainage.

[0028] like Figure 5 As shown, the material guide hole 541 is a tapered hole, and the size of the small mouth of the material guide hole 541 matches the size of the inner hole of the circulation tube 533. The material guide seat 54 is installed with the small mouth of the material guide hole 541 facing the circulation tube seat 53. After the material guide seat 54 is stacked, the small mouth of the material guide hole 541 is connected to the inner hole of the circulation tube 533 on the circulation tube seat 53, and the large mouth of the material guide hole 541 faces the outlet end of the masterbatch drying tower 3, so that the masterbatch can be smoothly introduced.

[0029] like Figure 4 As shown, the upper plate 531 is provided with a plurality of positioning holes 5311. Figure 5 As shown, a plurality of positioning pins 542 are connected to the material guide seat 54, and the positioning pins 542 are installed on the overlapping surface of the material guide seat 54 and the upper disk body 531. The positioning pins 542 can be inserted into the positioning holes 5311 one by one, so as to ensure that the small opening of the material guide hole 541 is connected with the inner hole of the flow tube 533 on the flow tube seat 53 after overlapping, so as to ensure the normal flow of the masterbatch.

[0030] like Figure 5 As shown, one side of the material guide seat 54 has an uneven structure. The uneven structure is designed on the side of the material guide hole 541 where the large opening is located (that is, the end face facing the outlet end of the masterbatch drying tower 3). The large opening of the material guide hole 541 corresponds to the concave points of the material guide hole 541, so that the masterbatch can slide down along the convex points of the material guide hole and smoothly fall into the material guide hole 541. The convex points of the material guide surface are arc-shaped. Since the material guide surface is uneven, the masterbatch will not remain on the material guide surface. After the masterbatch hits the arc-shaped material guide surface, it can fall naturally. This design helps to improve the pass rate of the masterbatch on the material guide seat 54.

[0031] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A degradable polyester fiber production device, characterized in that: The invention comprises a screw extruder (1), a chip drying tower (2), a masterbatch drying tower (3), and a batching machine (4). The chip drying tower (2) and the masterbatch drying tower (3) are both connected to the batching machine (4) through pipelines. The batching machine (4) is connected to the screw extruder (1) through pipelines. The connecting pipeline between the masterbatch drying tower (3) and the batching machine (4) adopts a temperature-controlled conveying pipeline (5). The temperature-controlled conveying pipeline (5) comprises a main pipe body (51) and an air-cooling component (52). The main pipe body (51) can circulate and convey the masterbatch. The air-cooling component (52) is installed on the main pipe body (51). The air-cooling component (52) can convey cooling air into the main pipe body (51).

2. A degradable polyester fiber production device according to claim 1, characterized in that: The air cooling component (52) comprises an air inlet pipeline (521) and an air return pipeline (522), wherein the air inlet pipeline (521) and the air return pipeline (522) are both connected to the interior of the main pipe (51), and the air inlet pipeline (521) is installed with a control valve (523).

3. A degradable polyester fiber production device according to claim 2, characterized in that: The temperature-controlled conveying pipeline (5) further comprises a circulation pipe seat (53), wherein the circulation pipe seat (53) is inserted into the main pipe body (51), and the circulation pipe seat (53) comprises an upper disk body (531) and a lower disk body (532), wherein the upper disk body (531) and the lower disk body (532) are arranged in parallel, and a plurality of circulation pipes (533) are connected and installed between the upper disk body (531) and the lower disk body (532), wherein the inner hole of the circulation pipe (533) is through-hole, and the masterbatch can be circulated and conveyed through the circulation pipe (533).

4. A degradable polyester fiber production device according to claim 3, characterized in that: The inner hole diameter of the circulation tube (533) is set to be 1.3-1.5 times the particle size of the standard master batch.

5. The degradable polyester fiber production device according to claim 3, characterized in that: The temperature-controlled delivery pipeline (5) further comprises a material guide seat (54) and a threaded pressure plate (55); a mounting groove (511) is provided at one end of the main body (51); the outer diameter of the upper plate (531) of the circulation pipe seat (53) matches the inner diameter of the mounting groove (511); the outer diameter of the lower plate (532) of the circulation pipe seat (53) matches the inner hole size of the main body (51); the upper plate (531) is clamped in the mounting groove (511). The material guide seat (54) is stacked on the upper disk body (531), the installation groove (511) is provided with a threaded section (512), the threaded pressure plate (55) is threadedly connected to the installation groove (511), and the threaded pressure plate (55) can be tightly installed on the material guide seat (54), and the material guide seat (54) is provided with a plurality of material guide holes (541), and the number and opening positions of the material guide holes (541) match the flow pipe (533).

6. A degradable polyester fiber production device according to claim 5, characterized in that: The material guide hole (541) is a tapered hole, the small opening size of the material guide hole (541) matches the inner hole size of the circulation tube (533), and the material guide seat (54) is installed with the small opening of the material guide hole (541) facing the circulation tube seat (53).

7. The degradable polyester fiber production device according to claim 5, characterized in that: The upper disk body (531) is provided with a plurality of positioning holes (5311), and the material guide seat (54) is connected with a plurality of positioning pins (542). The positioning pins (542) can be inserted into the positioning holes (5311) one by one, and at this time, the small opening of the material guide hole (541) can be connected with the inner hole of the circulation pipe (533).

8. The degradable polyester fiber production device according to claim 5, characterized in that: One side of the material guide seat (54) has an uneven structure, and the uneven structure is designed on the side of the material guide hole (541) where the large opening is located. The large opening of the material guide hole (541) is located at a corresponding concave point on the plate surface.

9. The degradable polyester fiber production device according to claim 3, characterized in that: A ventilation space (56) is formed between the main pipe (51) and the circulation pipe (533), and the air inlet pipe (521) and the air return pipe (522) are both connected to the ventilation space (56).

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