Cooling mechanism for small-hole-number super-coarse-denier single filament

Abstract

The utility model discloses a cooling mechanism for a small-hole-number super-coarse-denier single filament, and relates to the technical field of spinning. The cooling mechanism for the small-hole-number super-coarse-denier single filament comprises an air bellow and an extended air duct. And the extended air duct is detachably connected to the bottom of the air bellow. The plurality of extended air ducts extend in the vertical direction; the lengthened air duct comprises a straight duct section and an air outlet section, the straight duct section is located above the air outlet section, and a plurality of through holes are formed in the side wall of the air outlet section and evenly distributed in the axial direction and the circumferential direction. According to the cooling mechanism for the small-hole-number super-coarse-denier single filament, the cooling distance can be prolonged, and the purpose of uniform cooling can be achieved.

Description

Technical Field

[0001] This specification relates to the field of spinning technology, and in particular to a cooling mechanism for ultra-coarse denier monofilaments with a low number of pores. Background Technology

[0002] Currently, among civilian chemical fiber filaments, for polyester FDY (Fully Drawn Yarn), a super coarse denier monofilament with a small number of pores, the monofilament fineness generally exceeds 16D, such as 200D / 12f. The monofilament fineness = 200 / 12 = 16.6. Twelve fiber monofilaments are combined to form a filament with a fineness of 200D. Due to its special rigidity and toughness, it is generally used to make home textiles, bag fabrics, tent fabrics, etc. If an irregular cross-section is added (such as flat, wavy flat, etc.), it can also be made into a stiff wool variety of fleece, which has a considerable product premium.

[0003] In principle, FDY with extra-thick monofilaments is difficult to cool evenly. Traditional ring-blown cooling has a short cooling zone distance, generally only about 50cm, which is sufficient for cooling ordinary civilian polyester fibers, such as 30D / 24f and 50D / 72f, where the monofilament is around 1D. However, for special varieties with monofilaments exceeding 16D, a longer cooling zone distance is required, and traditional ring-blown cooling equipment and processes cannot achieve uniform cooling. Although side-blown cooling can achieve a longer cooling distance, it is a unilateral airflow method, which cannot achieve uniform cooling for thick polyester FDY monofilaments. This results in faster cooling on the windward side and slower cooling on the leeward side, leading to differential cooling stress and unstable internal tension of the filament. Utility Model Content

[0004] In view of the shortcomings of the prior art, one object of this specification is to provide a cooling mechanism for ultra-coarse denier monofilaments with few pores, which can both extend the cooling distance and achieve uniform cooling.

[0005] To achieve the above objectives, this specification provides a cooling mechanism for ultra-coarse denier monofilaments with a low porosity, comprising:

[0006] bellows;

[0007] An extended air duct is detachably connected to the bottom of the air box; a plurality of the extended air ducts extend vertically; the extended air duct includes a straight section and an air outlet section, the straight section is located above the air outlet section, and the side wall of the air outlet section is provided with a plurality of through holes, the plurality of through holes being evenly distributed in the axial and circumferential directions.

[0008] In a preferred embodiment, the diameter of the through hole is 0.3cm to 0.5cm.

[0009] In a preferred embodiment, the spacing between adjacent through holes is 0.5cm to 1.0cm.

[0010] In a preferred embodiment, the top of the straight section is provided with a connecting part, the outer diameter of which is larger than the diameter of the straight section; the connecting part is provided with a plurality of screw holes.

[0011] In a preferred embodiment, the plurality of screw holes are evenly distributed in the circumferential direction, and the connecting part is fixedly connected to the bottom of the air box by screws, the screws being inserted into the screw holes.

[0012] In a preferred embodiment, the diameters of the straight section and the air outlet section are equal.

[0013] In a preferred embodiment, the lengths of the straight section and the air outlet section are equal.

[0014] In a preferred embodiment, the length of the extended ventilation duct is 90cm to 110cm.

[0015] In a preferred embodiment, the length of the extended ventilation duct is 100cm.

[0016] In a preferred embodiment, the air box is provided with an annular filter element, and the filament bundle passes through the center of the annular filter element to reach the extended air duct; the cold zone distance of the cooling mechanism is 130cm~150cm. Beneficial effects

[0017] The cooling mechanism for ultra-coarse single-denier monofilaments with a low number of pores provided in this embodiment extends the cooling distance by setting an extended air duct below the air box. The extended air duct includes a straight section and an air outlet section arranged vertically. The straight section is a sealed air duct without holes, allowing the cooling air to continue cooling the filament bundle even after descending from the air box. The side wall of the air outlet section has multiple through holes for air outlet; that is, the straight section is an air duct that passes through the air outlet holes. This extends the cooling process while increasing heat dissipation, preventing the hot air from the molten filaments extruded by the spinneret from failing to diffuse around the filament bundle in a timely manner after heat exchange between the cooling air and the molten filaments.

[0018] The extended air duct provided in this embodiment, with its unique structure, can not only extend the cooling distance, but also prevent the ambient wind from interfering with the filament bundle inside the air duct. It is like putting a turtleneck sweater on the filament bundle, which helps to stabilize the tension of the filament bundle during cooling (because there are few ultra-coarse denier monofilaments, the spinning tension is small, and they are easily disturbed by the ambient wind and shake, resulting in uneven extrusion molding), thus achieving the purpose of uniform cooling.

[0019] Specific embodiments of the present invention are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of the present invention can be adopted. It should be understood that the scope of the embodiments of the present invention is not limited thereto.

[0020] Features described and / or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

[0021] It should be emphasized that the term "including / comprises" as used herein refers to the presence of a feature, whole, step, or component, but does not exclude the presence or addition of one or more other features, wholes, steps, or components. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of a cooling mechanism for ultra-coarse denier monofilaments with few pores provided in this embodiment;

[0024] Figure 2 This is a schematic diagram of an extended ventilation duct provided in this embodiment.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Bellows; 2. Extended bellows; 21. Straight section; 22. Air outlet section; 221. Through hole; 23. Connecting part; 231. Screw hole; 3. Wire bundle. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0028] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or may be interposed with another element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or may be interposed with another element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] Please see Figure 1 and Figure 2 This application provides a cooling mechanism for ultra-coarse denier monofibrils with a low number of pores, comprising: a wind box 1 and an extended wind duct 2.

[0031] The system includes multiple extension ducts 2, each corresponding to a wire bundle 3. The extension ducts 2 are detachably connected to the bottom of the air box 1. The multiple extension ducts 2 extend vertically. Each extension duct 2 includes a straight section 21 and an air outlet section 22. The straight section 21 is located above the air outlet section 22. The sidewall of the air outlet section 22 has multiple through holes 221, which are evenly distributed axially and circumferentially.

[0032] The cooling mechanism for ultra-coarse denier monofilaments with few pores provided in this embodiment extends the cooling distance by setting an extension duct 2 below the air box 1. The extension duct 2 includes a vertically arranged straight section 21 and an air outlet section 22. The straight section 21 is a sealed air duct without holes, allowing the cooling air to continue cooling the filament bundle 3 even after descending from the air box 1. The side wall of the air outlet section 22 has multiple through holes 221 for air outlet; that is, the straight section 21 is an air duct that passes through the air outlet holes. This extends the cooling process while increasing heat dissipation, preventing the hot air from failing to diffuse around the filament bundle 3 after heat exchange between the cooling air and the molten filaments extruded by the spinneret.

[0033] The extended air duct 2 provided in this embodiment, with its unique structure, can not only extend the cooling distance, but also prevent the ambient wind from interfering with the filament bundle 3 inside the air duct. It is like putting a turtleneck sweater on the filament bundle 3, which helps to stabilize the tension of the filament bundle 3 during cooling (because there are few ultra-coarse denier monofilaments, the spinning tension is small, and they are easily disturbed by the ambient wind and shake, resulting in uneven extrusion molding), thus achieving the purpose of uniform cooling.

[0034] In this embodiment, the diameter of the through hole 221 is 0.3cm to 0.5cm, which allows for better heat dissipation. Preferably, the spacing between adjacent through holes 221 is 0.5cm to 1.0cm, which extends the cooling time and increases the heat dissipation effect, allowing the hot air around the filament bundle 3 to be discharged in a timely manner, achieving uniform cooling.

[0035] like Figure 2 As shown, the top of the straight section 21 is provided with a connecting part 23. The outer diameter of the connecting part 23 is larger than the diameter of the straight section 21, thereby facilitating the connection of the extension duct 2 to the bottom of the air box 1. The connecting part 23 is provided with a plurality of screw holes 231. Preferably, there are three screw holes 231, which can not only provide a stable connection, but also facilitate quick installation and disassembly.

[0036] Specifically, the plurality of screw holes 231 are evenly distributed in the circumferential direction. The connecting part 23 is fixedly connected to the bottom of the air box 1 by screws, the screws passing through the screw holes 231. The screws enable a detachable connection between the extension air duct 2 and the bottom of the air box 1, facilitating installation and modification.

[0037] In this embodiment, the diameters of the straight section 21 and the air outlet section 22 are equal. The lengths of the straight section 21 and the air outlet section 22 in the vertical direction are equal. The only difference between the straight section 21 and the air outlet section 22 is whether or not a through hole 221 is provided on the side wall.

[0038] In other embodiments, the lengths of the straight section 21 and the air outlet section 22 in the vertical direction can be reasonably set according to the cooling and heat dissipation requirements.

[0039] Specifically, the length of the extended air duct 2 is 90cm to 110cm. Because the cooling length of a traditional air box 1 is approximately 40cm to 50cm, the cooling mechanism provided in this application, in order to achieve a cold zone distance of 130cm to 150cm (preferably approximately 140cm), sets the length of the extended air duct 2 to 90cm to 110cm. Further, the length of the extended air duct 2 is 100cm.

[0040] In this embodiment, the air box 1 can be a traditional air box used in ring-blowing cooling equipment, i.e., the air box in the prior art. This application will not provide further description of the air box 1. The cooling mechanism required in this application can be obtained by installing an extension air duct 2 at the bottom of the air box 1. The air box 1 contains a ring-blowing filter element. After the spinneret extrudes the melt, it reaches the air box 1. The air box 1 contains the ring-blowing filter element, and the filament bundle 3 passes through the center of the ring-blowing filter element and reaches the extension air duct 2. After passing through the extension air duct 2, the filament bundle 3 reaches the oil nozzle for bundling and oiling, and then proceeds to the subsequent spinning process.

[0041] The cooling mechanism provided in this embodiment can solve the problems of short cooling air blowing distance and insufficient cooling length in existing civilian yarn equipment, and solve the problem that existing processes cannot properly cool the production of monofilaments with fewer holes and larger denier than 16D. It can ensure that FDY monofilaments with fewer holes and larger denier are adequately cooled.

[0042] It should be noted that in the description of this specification, the terms "first," "second," etc., are used only for descriptive purposes and to distinguish similar objects; there is no order between them, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of this specification, unless otherwise stated, "a plurality of" means two or more.

[0043] Any numerical values ​​cited herein include all values ​​ranging from a lower limit to an upper limit, increasing by one unit, with at least two units between any lower and any higher value. For example, if the quantity of a component or the value of a process variable (e.g., temperature, pressure, time, etc.) is described as being from 1 to 90, preferably from 20 to 80, more preferably from 30 to 70, the purpose is to illustrate that values ​​such as 15 to 85, 22 to 68, 43 to 51, 30 to 32 are also explicitly listed in this specification. For values ​​less than 1, a unit is appropriately considered to be 0.0001, 0.001, 0.01, 0.1, etc. These are merely examples intended for explicit expression, and it can be assumed that all possible combinations of values ​​listed between the minimum and maximum values ​​are explicitly described in this specification in a similar manner.

[0044] Unless otherwise stated, all ranges include the endpoints and all numbers between them. The terms "approximately" or "about" used with ranges apply to both endpoints of the range. Thus, "approximately 20 to 30" is intended to cover "approximately 20 to approximately 30," including at least the specified endpoints.

[0045] All articles and references disclosed herein, including patent applications and publications, are incorporated herein by reference for various purposes. The term “substantially constitutes…” used to describe a combination should include the identified elements, components, parts, or steps, as well as other elements, components, parts, or steps that do not substantially affect the essential novelty of the combination. The use of the terms “comprising” or “including” to describe combinations of elements, components, parts, or steps herein also contemplates embodiments substantially constituted by such elements, components, parts, or steps. The use of the term “may” herein is intended to indicate that any described attribute included by “may” is optional.

[0046] Multiple elements, components, parts, or steps can be provided by a single integrated element, component, part, or step. Alternatively, a single integrated element, component, part, or step can be divided into multiple separate elements, components, parts, or steps. The use of "a" or "an" to describe an element, component, part, or step does not imply the exclusion of other elements, components, parts, or steps.

[0047] It should be understood that the above description is for illustrative purposes and not for limitation. Many embodiments and applications beyond the provided examples will be apparent to those skilled in the art upon reading the above description. Therefore, the scope of this teaching should not be determined by reference to the above description, but rather by reference to the appended claims and the full scope of their equivalents. For purposes of completeness, all articles and references, including patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the preceding claims is not intended as a waiver of that subject matter, nor should it be construed as an indication that the inventors have not considered that subject matter as part of the disclosed utility model subject matter.

Claims

1. A cooling mechanism for ultra-thick denier monofilaments with few pores, characterized in that, include: bellows; An extended air duct is detachably connected to the bottom of the air box; a plurality of the extended air ducts extend vertically; the extended air duct includes a straight section and an air outlet section, the straight section is located above the air outlet section, and the side wall of the air outlet section is provided with a plurality of through holes, the plurality of through holes being evenly distributed in the axial and circumferential directions.

2. The cooling mechanism for ultra-coarse denier monofilaments with few pores according to claim 1, characterized in that, The diameter of the through hole is 0.3cm to 0.5cm.

3. The cooling mechanism for ultra-coarse denier monofilaments with few pores according to claim 1, characterized in that, The spacing between adjacent through holes is 0.5cm to 1.0cm.

4. The cooling mechanism for ultra-coarse denier monofilaments with few pores according to claim 1, characterized in that, The top of the straight section is provided with a connecting part, the outer diameter of which is larger than the diameter of the straight section; the connecting part is provided with multiple screw holes.

5. The cooling mechanism for ultra-coarse denier monofilaments with few pores according to claim 4, characterized in that, The plurality of screw holes are evenly distributed in the circumferential direction, and the connecting part is fixedly connected to the bottom of the air box by screws, the screws being inserted into the screw holes.

6. The cooling mechanism for ultra-coarse denier monofilaments with few pores according to claim 1, characterized in that, The diameters of the straight section and the air outlet section are equal.

7. The cooling mechanism for ultra-coarse denier monofilaments with few pores according to claim 1, characterized in that, The lengths of the straight section and the air outlet section are equal.

8. The cooling mechanism for ultra-coarse denier monofilaments with few pores according to claim 1, characterized in that, The length of the extended ventilation duct is 90cm to 110cm.

9. The cooling mechanism for ultra-coarse denier monofilaments with few pores according to claim 8, characterized in that, The length of the extended ventilation duct is 100cm.

10. The cooling mechanism for ultra-coarse denier monofilaments with few pores according to claim 1, characterized in that, The air box is equipped with an annular filter element, and the filament bundle passes through the center of the annular filter element to reach the extended air duct; the cold zone distance of the cooling mechanism is 130cm~150cm.

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