Suction cooling device for nylon yarn production

Abstract

The utility model relates to the technical field of chemical fiber tow production, in particular to a suction cooling device for polyamide yarn production, which comprises a cooling cabin, a spinning mechanism, a flow guide unit and a cooling unit. The flow guide unit is fixedly arranged in the cooling cabin body, the flow guide unit comprises a suction module and a drainage module, the suction module sucks air and generates downward airflow acting on fiber yarns through the drainage module, and the cooling unit comprises a liquid cooling control cabinet, a cooling pipe and a cooling liquid pipeline; the cooling unit enters the cooling pipe through the cooling liquid pipeline to cool the surrounding air, and then the fibers are cooled under the driving of the flow guide unit. And by arranging the downward air duct, the situation that in the production process, jet monomers are attached to the air outlet to affect the stability of cooling airflow is prevented, the production efficiency is improved, the fiber yarn forming yield is increased, and the fiber yarn cooling forming efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical fiber tow production, in particular to a suction cooling device for nylon filament production. Background Art

[0002] For a long time, side blowing has been used as the cooling method in the production of chemical fiber filaments. The energy consumption accounts for a large part of the production cost of filaments. The demand for products such as nylon filaments is increasing, and the development of new chemical fiber filaments is moving towards high-value-added differential fibers. Higher requirements are put forward for the cooling blowing conditions, and the traditional side blowing cooling device can no longer meet the process requirements of filament products. The ring blowing device not only has the advantage of uniform air reception for each bundle of filaments, but also can reduce energy consumption, effectively solving the problem of wind energy loss caused by the large blowing area of side blowing. Therefore, the ring blowing cooling technology has high commercial value and broad application prospects, and has been more and more widely used in practice.

[0003] However, when some special filaments such as nylon filaments PA6 and PA66 are produced by a spinneret, a large amount of monomers, low molecular weight polymers, etc. will volatilize. For example, in the production of nylon fibers, when direct spinning is carried out, the content of volatiles such as monomers and low molecular weight polymers in the melt is about 10%, and it is generally about 2% in indirect spinning. When these volatiles such as monomers and low molecular weight polymers come into contact with the outside world and are cooled and crystallized, they will adhere to the spinneret and contaminate the surface of the spinneret, which not only deteriorates the working environment of the spinning chamber, affects the normal production of the tow and the quality of the spun tow, but also shortens the normal service life of the spinneret. The above-mentioned volatiles such as monomers and low molecular weight polymers will also enter the ring blowing system along with the produced tow, crystallize in large quantities when encountering cold air, and adhere to and block the ventilation holes, affecting the uniformity of the cooling air in the ring blowing system, affecting the quality of the tow, and greatly shortening the normal service life of the wire mesh cylinder. Moreover, it is very time-consuming and laborious to clean the wire mesh cylinder in the later stage.

[0004] In summary, how to avoid the occurrence of the above-mentioned adverse phenomena when using the ring blowing cooling system to produce the above-mentioned special filaments has become a key technical problem that needs to be solved urgently when using the ring blowing method to cool and produce the above-mentioned special filaments at present. Content of the Utility Model

[0005] The utility model aims at the deficiencies in the prior art and provides a suction cooling device for nylon filament production that can control the discharge of materials. The device includes a cooling cabin body. The upper end of the cooling cabin body is connected to a spinning mechanism. The spinning mechanism includes an extrusion nozzle for extruding and forming molten fiber filaments. It also includes a diversion unit and a cooling unit. The diversion unit is fixedly arranged in the cooling cabin body. The diversion unit includes a suction module and a diversion module. The suction module inhales gas and generates a downward air flow acting on the fiber filaments through the diversion module. The cooling unit includes a liquid cooling control cabinet, cooling pipes, and a coolant pipeline. The cooling unit enters the cooling pipes through the coolant pipeline to cool the surrounding air, and then cools the fiber filaments under the drive of the diversion unit.

[0006] Preferably, the suction module includes a driving motor, a diversion fan, and an air guiding housing. The air guiding housing is installed at the positioning opening on the side wall of the cooling cabin body, and a plurality of air inlet holes are arranged on the air guiding housing.

[0007] Preferably, the driving motor is fixedly arranged in the air guiding housing. The output shaft of the driving motor controls the rotation of the diversion fan. The front part of the air guiding housing is connected to the diversion module. The diversion fan inhales the air flow from the air inlet holes and blows it into the diversion module.

[0008] Preferably, the diversion module includes a diversion cover. The diversion cover is annularly arranged below the extrusion nozzle. An annular air duct is arranged inside the diversion cover. The diversion cover is provided with an air outlet communicating with the air duct, and the air outlet is annular.

[0009] Preferably, the air outlet is integrally arranged on the side wall of the diversion cover, and the air outlet is arranged vertically downward.

[0010] Preferably, an installation opening is arranged on one side of the diversion cover, and the installation opening is butt-connected and communicated with the air guiding housing.

[0011] Preferably, in the cooling unit, a heat dissipation component, a water pump, and a valve are arranged inside the liquid cooling control cabinet. The cooling pipes are spirally fixed inside the cooling cabin body. The upper and lower water ports of the cooling pipes are communicated with the liquid cooling control cabinet through the coolant pipeline.

[0012] Preferably, installation holes are arranged on the side wall of the cooling cabin body for installing the coolant pipeline.

[0013] Preferably, positioning openings are arranged on the side wall of the cooling cabin body, and a fixing frame is fixedly arranged on the inner side wall of the cooling cabin body for fixing the diversion unit.

[0014] Preferably, a cooling chamber door is provided on the side wall of the cooling chamber.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: by providing a downward air duct, it prevents the injection monomers during the production process from adhering to the air outlet, which affects the stability of the cooling air flow, reduces the maintenance cost, and improves the production efficiency; the uniform air flow generated by the annular air duct replaces the lateral air flow to avoid uneven stress on the polyamide fiber during the curing process, resulting in uneven stress on the fiber filaments and improving the yield of the formed fiber filaments; by setting a cooling circulation pipeline in combination with the air flow diverted by the downward air duct, the cold air acts downward on the fiber filaments, improving the efficiency of cooling and forming the fiber filaments. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will discuss the drawings required for use in the description of the embodiments or the prior art. Obviously, the technical solutions described in conjunction with the drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other embodiments and their drawings can be obtained based on these embodiments shown in the drawings.

[0017] Figure 1 It is a schematic diagram of the use state of a suction cooling device for polyamide filament production of the present utility model.

[0018] Figure 2 It is a schematic diagram of the internal use state of a suction cooling device for polyamide filament production of the present utility model.

[0019] Figure 3 It is a schematic diagram of the overall structure of a suction cooling device for polyamide filament production of the present utility model.

[0020] Figure 4 It is a schematic diagram of the diversion unit of a suction cooling device for polyamide filament production of the present utility model.

[0021] Figure 5 It is a partial cross-sectional schematic diagram of a suction cooling device for polyamide filament production of the present utility model.

[0022] Figure 6 It is a schematic diagram of the structure of the suction module of a suction cooling device for polyamide filament production of the present utility model.

[0023] Figure 7 It is a cross-sectional schematic diagram of the diversion cover of a suction cooling device for polyamide filament production of the present utility model.

[0024] In the figure: 1 - cooling cabin, 2 - fairing, 21 - mounting opening, 22 - air duct, 23 - air outlet, 24 - fixing bracket, 3 - air guiding housing, 31 - air inlet hole, 32 - driving motor, 33 - air guiding fan, 4 - cooling pipe, 5 - liquid cooling control cabinet, 51 - coolant pipeline, 6 - extrusion nozzle, 7 - fiber filament. Detailed implementation manners

[0025] The technical solutions of each embodiment of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments described in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope protected by the present utility model.

[0026] An embodiment of the present utility model provides a suction cooling device for nylon filament production, as Figures 1 to 7 shown, which includes a cooling cabin 1, a guiding unit and a cooling unit. The upper end of the cooling cabin 1 is communicated with a spinning mechanism, and the spinning mechanism includes an extrusion nozzle 6, which extrudes the molten fiber filament 7 downward to form and enters the lower cooling device. A guiding unit is fixedly arranged in the cooling cabin 1, and the guiding unit includes a suction module and a guiding module. The suction module sucks in gas and generates a downward air flow acting on the fiber filament 7 through the guiding module. The cooling unit includes a liquid cooling control cabinet 5, a cooling pipe 4 and a coolant pipeline 51. The liquid cooling control cabinet 5 controls the operating state of the refrigerant. The coolant pipeline 51 is filled with liquid refrigerant. The cooling unit enters the cooling pipe 4 through the coolant pipeline 51 to cool the downward air flow generated by the guiding unit, and then cools the fiber filament 7.

[0027] A cooling cabin door is arranged on the side wall of the cooling cabin 1. A positioning opening is arranged on the side wall of the cooling cabin 1. A fixing bracket 24 is fixedly arranged on the inner side wall of the cooling cabin 1, and the fixing bracket 24 is used to fix the guiding unit. An installation hole is arranged on the side wall of the cooling cabin 1, and the installation hole is used to install the coolant pipeline 51.

[0028] The suction module includes a driving motor 32, an air guiding fan 33 and an air guiding housing 3. The air guiding housing 3 is installed at the positioning opening on the side wall of the cooling cabin 1, and a plurality of air inlet holes 31 are arranged on the air guiding housing 3. The driving motor 32 is fixedly arranged in the air guiding housing 3, and the output shaft of the driving motor 32 controls the rotation of the air guiding fan 33. The front part of the air guiding housing 3 is communicated with the guiding module, and the air guiding fan 33 sucks in air from the air inlet holes 31 and blows it into the guiding module.

[0029] The described drainage module includes a diversion cover 2, which is annularly arranged below the extrusion nozzle 6. An annular air duct 22 is arranged inside the diversion cover 2. The diversion cover 2 is provided with an annular air outlet 23 communicated with the air duct 22. The air outlet 23 is integrally arranged on the side wall of the diversion cover 2 and is arranged vertically downward. An installation port 21 is arranged on one side of the diversion cover 2, and the installation port 21 is butt-connected and communicated with the air guiding housing 3. The diversion cover 2 is annularly arranged around the fiber filament 7 to be cooled. The fixing frame 24 is a square steel bracket. One end of the fixing frame 24 is fixed on the inner wall of the cooling cabin 1, and the other end is fixed on the outer side of the diversion cover 2.

[0030] In the cooling unit, a heat dissipation component, a water pump and a valve are arranged inside the liquid cooling control cabinet 5. The cooling pipe 4 is spirally fixed inside the cooling cabin 1. The upper and lower water ports of the cooling pipe 4 are communicated with the liquid cooling control cabinet 5 through the coolant pipeline 51. The liquid cooling method is the prior art familiar to those of ordinary skill in the art and will not be elaborated here.

[0031] During use, the nozzle at the extrusion nozzle 6 extrudes the molten polyamide fiber filament 7, which passes through the cooling cabin 1 and is wound by the winding mechanism below. Inside the cooling cabin 1, the fiber filament 7 passes through the annular hollow position of the diversion cover 2. The cooling pipe 4 cools the air above the diversion cover 2. The driving motor 32 drives the air guiding fan 33 to work, introduces the air flow at the air inlet hole 31 into the air guiding housing 3, and enters the air duct 22 of the diversion cover 2 through the installation port 21, guides the air flow to be discharged from the air outlet 23, drives the air flow near the air outlet 23 to flow along the air outlet direction of the air outlet 23, and drives the air cooled by the cooling pipe 4 to act downward on the fiber filament 7 for cooling.

[0032] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description, and therefore it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0033] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only an independent technical solution. This narrative style of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A suction cooling device for nylon yarn production, comprising a cooling chamber (1), wherein the upper end of the cooling chamber (1) is connected to a spinning mechanism, wherein the spinning mechanism comprises an extrusion nozzle (6) for extruding molten fiber yarns (7) into shape, characterized in that: It also includes a flow guide unit and a cooling unit, wherein the flow guide unit is fixedly arranged in the cooling chamber (1), and the flow guide unit includes a suction module and a drainage module, wherein the suction module inhales gas and generates a downward airflow acting on the fiber filaments (7) through the drainage module, and the cooling unit includes a liquid cooling control cabinet (5), a cooling pipe (4) and a cooling liquid pipeline (51), and the cooling unit enters the cooling pipe (4) through the cooling liquid pipeline (51) to cool the surrounding air, and then cools the fiber filaments (7) under the drive of the flow guide unit.

2. The suction cooling device for nylon yarn production according to claim 1, characterized in that: The suction module comprises a drive motor (32), an air induction fan (33) and an air induction shell (3); the air induction shell (3) is mounted at a positioning opening on a side wall of the cooling chamber (1); and a plurality of air inlet holes (31) are provided on the air induction shell (3).

3. The suction cooling device for nylon yarn production according to claim 2, characterized in that: The drive motor (32) is fixedly arranged in the air induction shell (3); the output shaft of the drive motor (32) controls the rotation of the air induction fan (33); the front part of the air induction shell (3) is connected to the air induction module; the air induction fan (33) sucks air from the air inlet (31) and blows it into the air induction module.

4. The suction cooling device for nylon yarn production according to claim 3, characterized in that: The drainage module comprises a flow guide cover (2), the flow guide cover (2) is arranged in an annular shape below the extrusion nozzle (6), an annular air duct (22) is arranged inside the flow guide cover (2), and the flow guide cover (2) is provided with an air outlet (23) connected to the air duct (22), and the air outlet (23) is annular.

5. The suction cooling device for nylon yarn production according to claim 4, characterized in that: The air outlet (23) is integrally arranged on the side wall of the air deflector (2), and the air outlet (23) is arranged vertically downward.

6. The suction cooling device for nylon yarn production according to claim 5, characterized in that: A mounting opening (21) is provided on one side of the air guide cover (2), and the mounting opening (21) is butt-jointed and connected to the air induction housing (3).

7. The suction cooling device for nylon yarn production according to claim 1, characterized in that: The liquid cooling control cabinet (5) in the cooling unit is internally provided with a heat dissipation component, a water pump and a valve, the cooling pipe (4) is spirally fixed inside the cooling cabin (1), and the upper and lower water ports of the cooling pipe (4) are connected to the liquid cooling control cabinet (5) through the coolant pipeline (51).

8. The suction cooling device for nylon yarn production according to claim 1, characterized in that: The side wall of the cooling chamber (1) is provided with a mounting hole, and the mounting hole is used to mount the coolant pipeline (51).

9. The suction cooling device for nylon yarn production according to claim 1, characterized in that: The side wall of the cooling chamber (1) is provided with a positioning opening, and the inner wall of the cooling chamber (1) is fixedly provided with a fixing frame (24), and the fixing frame (24) is used to fix the guide unit.

10. The suction cooling device for nylon yarn production according to claim 1, characterized in that: The side wall of the cooling cabin body (1) is provided with a cooling cabin door.

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