CN114277452B - Dry-jet wet spinning spinning equipment - Google Patents

Abstract

The invention provides a dry-jet wet-spinning spinning device, which belongs to the technical field of chemical fiber manufacturing engineering. It includes a melt pipeline, a plurality of spinneret assemblies, a cooling air pipeline, a solidification bath, and a cluster guide wire rod. The melt pipeline includes a first-type main pipeline and a plurality of first-type branch pipelines. The first-type main pipe The first branch pipeline is connected with the first kind of branch pipeline respectively; the first kind of branch pipeline is in one-to-one correspondence with the spinneret assembly, and the first kind of branch pipeline is connected with the corresponding spinneret assembly, so that after passing through a plurality of spinneret assemblies, the spinning melt multiple groups of spinning fine streams; the cooling air pipeline is used to blow air to multiple groups of spinning fine streams through multi-directional air outlets; the cluster guide rod is set in the coagulation bath so that multiple groups of spinning streams pass through the cluster guide wires After the rod completes the bundled guidewire. When it is used for spinning, the production capacity is twice that of the original spinning equipment, and, under the conditions of the production line with the same production capacity, the investment cost and floor area are both reduced.

Description

Dry-jet wet spinning spinning equipment

technical field

The invention relates to the technical field of chemical fiber manufacturing engineering, in particular to a dry-jet wet spinning spinning equipment.

Background technique

Dry-jet wet spinning is a spinning method gradually developed in the 1960s, and it is widely used in the chemical fiber industry. In the prior art, there are mainly two forms of industrialized dry-jet wet spinning spinning equipment, one is a strip-shaped spinneret with side blowing, and the other is an annular spinneret with annular blowing. Each has its own advantages and disadvantages. shortcoming. However, it is difficult for the dry-jet wet spinning method spinning equipment in the prior art to take into account the advantages of the above two forms.

Contents of the invention

In view of this, the present invention provides a kind of dry-jet wet-spinning method spinning equipment, uses it to spin, and the production capacity is twice of the spinning production capacity of the original spinning equipment, and, under the production line condition of the same production capacity, the investment cost The size and footprint are reduced, making it more suitable for practical use.

In order to achieve the above object, the technical scheme of the dry jet wet spinning method spinning equipment provided by the invention is as follows:

The dry-jet wet spinning spinning equipment provided by the present invention comprises a melt pipeline (3), a plurality of spinneret assemblies (4), a cooling air pipeline (5), a coagulation bath (7), and a cluster guide wire rod,

The melt pipeline (3) includes a first-type main pipeline and a plurality of first-type branch pipelines, and the first-type main pipeline communicates with the first-type branch pipelines respectively;

The first branch pipeline corresponds to the spinner assembly (4) one by one, and the first branch pipeline communicates with the corresponding spinneret assembly (4), so that passing through the multiple spinneret assemblies ( 4) Afterwards, the spinning melt forms multiple groups of fine spinning streams;

The cooling air pipeline (5) is used to blow air to the multiple groups of fine spinning streams through the air outlet;

The clustering guide rods are arranged in the coagulation bath (7), so that the multiple groups of fine spinning streams pass through the clustering guide rods to complete the clustering guide rods.

The dry-jet wet spinning method spinning equipment provided by the present invention can also be further realized by adopting the following technical measures.

Preferably, the specifications of the multiple spinner assemblies (4) are the same; the specifications of the multiple first branch pipelines are the same.

As preferably, the dry-jet wet spinning method spinning equipment also includes a metering pump (1) and a metering pump casing (2),

The spinning melt enters the melt pipeline (3) after passing through the metering pump (1) and the metering pump casing (2).

Preferably, the cooling air pipeline (5) includes a second-type main pipeline and multiple second-type branch pipelines, and the second-type main pipeline communicates with the multiple second-type branch pipelines respectively.

As preferably, the dry-jet wet spinning method spinning equipment also includes a cooling air distribution blowing device (6),

The cooling air distribution and blowing device (6) includes a cavity, and the cavity is provided with the air outlet;

The multiple second-type branch pipelines are respectively communicated with the cavity.

Preferably, the plurality of branch pipelines of the second type are evenly arranged on the cavity.

As preferably, the dry-jet wet spinning method spinning equipment also includes two windshields (9),

The two windshields (9) are respectively arranged below the two axial ends of the cavity,

The protruding length of the windshield (9) in the horizontal direction exceeds the farthest end of the spinning fluid, and the bottommost end of the windshield (9) is in the coagulation bath of the coagulation bath (7). below the face.

Preferably, the dry-jet wet-spinning spinning equipment further includes a thermal insulation jacket, and the thermal insulation jacket is arranged on the periphery of the melt pipeline (3) and/or the plurality of spinning assemblies (4).

Preferably, the dry-jet wet-spinning spinning equipment further includes a thermal insulation jacket, and the thermal insulation jacket is arranged on the periphery of the metering pump box (2).

As a preference, a medium cavity is provided inside the heat preservation jacket, and the medium cavity is filled with heat preservation medium.

Preferably, the heat preservation medium is water, and the temperature control is realized by controlling the temperature of the water.

As preferably, the spinning equipment of the dry-jet wet spinning method also includes a turning rod (11), and the turning rod (11) is arranged on the outlet edge of the coagulation bath (7),

The fine spinning stream of the bundled guide yarn passes through the turning rod (11) to complete the spinning process.

As a preference,

The clustering guide rods include a first clustering guide rod (10), and the plurality of groups of fine spinning streams all pass through the first clustering guide rods (10) to complete the clustering guide rods.

As a preference,

The clustering guide wire rods include a first clustering guide wire rods,

Each group of spinning fine streams in the plurality of groups of spinning fine streams passes through at least one clustering guide rod to complete clustering guide wires.

The dry-jet wet spinning equipment provided by the present invention adopts multiple sets of elongated spinneret assemblies, so compared with common elongated spinneret equipment, the number of spinneret holes is many times that of the original. At the same spinning speed, the production capacity of the spinning machine is many times that of the original spinning machine. Using this equipment on a production line with the same production capacity can reduce equipment investment costs and reduce civil construction investment costs.

Description of drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiment. The drawings are only for the purpose of illustrating a preferred embodiment and are not to be considered as limiting the invention. Also throughout the drawings, the same reference numerals are used to designate the same parts. In the attached picture:

Accompanying drawing 1 is the three-dimensional structure schematic diagram of the dry spray wet spinning method spinning equipment that the embodiment of the present invention provides;

Accompanying drawing 2 is the longitudinal sectional view of the dry-jet wet spinning method spinning equipment provided by the embodiment of the present invention, wherein, there is one bundle guide rod;

Accompanying drawing 3 is the partial enlarged view of part A in accompanying drawing 2;

Accompanying drawing 4 is the three-dimensional structure schematic diagram of the cooling air pipeline applied in the dry jet wet spinning method spinning equipment provided by the embodiment of the present invention;

Accompanying drawing 5 is the longitudinal sectional view of the dry-jet wet spinning method spinning equipment provided by the embodiment of the present invention, wherein, there are two cluster guide wire rods;

Accompanying drawing 6 is the longitudinal sectional view of the dry-jet wet-spinning method spinning equipment provided by the embodiment of the present invention, wherein, there are three bunching guide wire rods;

Explanation of reference signs:

1-Metering pump, 2-Metering pump box, 3-Melt pipeline, 4-Spinner assembly, 5-Cooling air pipeline, 6-Cooling air distribution blowing device, 7-Coagulation bath, 8-Coagulation bath Surface, 9-windshield, 10-the first clustering guide wire rod, 11-steering rod, 12-the second clustering guide wire rod, 13-the third clustering guide wire rod, 14-the fourth clustering guide wire rod.

detailed description

In view of this, the present invention provides a kind of dry-jet wet-spinning method spinning equipment, uses it to spin, and the production capacity is twice of the spinning production capacity of the original spinning equipment, and, under the production line condition of the same production capacity, the investment cost The size and footprint are reduced, making it more suitable for practical use.

After arduous efforts, the inventor found that the disadvantages and advantages of the long strip spinning equipment compared with the ring spinning equipment mainly include:

First of all, the disadvantages of strip spinning equipment compared to ring spinning equipment mainly include:

First, compared with the annular plate spinning equipment, the number of spinneret holes in the equipment unit area is about half of the latter. At the same spinning speed, the number of holes determines the production capacity. Therefore, the unit production area of the strip spinning equipment is larger than that of the ring spinning equipment. This causes its cost disadvantage in terms of equipment quantity and civil construction investment.

Second, the side blowing mode of the long strip spinning equipment causes the wind field contacted by the fine spinning stream at the end and the middle part of the tow belt to be uneven. The circular spinning equipment adopts circular blowing, which is completely symmetrical from the inside to the outside, and the wind field is uniform. Therefore, the uniformity of the yarn quality of the annular plate spinning equipment is relatively better.

However, long strip spinning equipment has many advantages that ring spinning equipment does not have, including:

First, from the perspective of equipment operation performance, the long-strip spinneret assembly is installed in a tightly insulated spinning box, and the temperature of the spinneret assembly can be well controlled, thereby controlling the viscosity of the spinning solution and the pressure of the assembly , which is beneficial to increase the spinning speed.

Second, from the perspective of operation, the operation of strip spinning equipment is more convenient than that of ring spinning equipment in terms of spinning, clustering, and component replacement.

Third, from the perspective of equipment processing, the processing of the spinning components, blowing components and other components of the strip spinning equipment is less difficult and the cost is relatively low. However, each component of the ring-shaped plate spinning equipment requires high processing precision and is difficult to process, resulting in high equipment manufacturing costs.

In order to further explain the technical means and effects of the present invention to achieve the intended purpose of the invention, the specific implementation method of a dry-jet wet spinning spinning equipment proposed according to the present invention will be described below in conjunction with the accompanying drawings and preferred embodiments. , structure, feature and effect thereof, detailed description is as follows. In the following description, different "one embodiment" or "embodiment" do not necessarily refer to the same embodiment. Furthermore, the particular features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.

The term "and/or" in this article is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and/or B. The specific understanding is: A and B can be included at the same time, and A and B can be included separately. A exists, B may exist alone, and any of the above three situations can be met.

Referring to accompanying drawing 1-accompanying drawing 6, the dry-jet wet spinning method spinning equipment provided by the present invention comprises melt pipeline 3, a plurality of spinnerets 4, cooling air pipeline 5, coagulation bath 7, and bundle guide wire rod . The melt pipeline 3 includes a first-type main pipeline and a plurality of first-type branch pipelines, and the first-type main pipeline and the first-type branch pipelines are respectively communicated; the first-type branch pipelines correspond to the spinneret assembly 4 one-to-one, and, The first kind of branch pipeline communicates with the corresponding spinneret assembly 4, so that after passing through a plurality of spinneret assemblies 4, the spinning melt forms multiple groups of fine spinning streams; the cooling air pipeline 5 is used to pass through the multi-directional air outlet Groups of fine spinning streams are blown; clustering guide wire rods are set in the coagulation bath 7, so that multiple groups of spinning streams pass through the clustering guide wire rods to complete the clustering guide wires. In the present embodiment, the spinning assembly 4 includes two, and the first branch pipeline includes two. In this case, the strip spinning equipment, the ring spinning equipment and the dry spray wet The comparison table of spinning spinning equipment is as follows:

Comparison parameters Strip spinning equipment Ring plate spinning equipment The equipment mentioned in the embodiment of the present invention Single hole number/piece 33870 70000 67740 Area occupied by a single pure equipment/m² 1.8143 2.8296 2.1913 Single unit includes operating area/m² 4.1706 5.8296 4.5475 m²/10,000 holes (pure equipment) 0.5357 0.4042 0.3235 m²/10,000 holes (including operating space) 1.2314 0.8328 0.6713 15,000 tons/year production line spinning equipment covers an area/m² 800 560 436

Among them, the specifications of the multiple spinner assemblies 4 are the same; the specifications of the multiple first branch pipelines are the same. In this embodiment, the caliber, length, and number of elbows of the two first-type branch pipelines are completely the same. In this case, it can ensure that the fine spinning streams flowing out of each group of spinning assemblies 4 have a strong consistency. , so that the quality of the finished silk obtained after spinning is uniform and stable.

Wherein, the dry jet wet spinning method further includes a metering pump 1 and a metering pump box 2 . The spinning melt enters the melt pipeline 3 after passing through the metering pump 1 . In this case, the metered spinning melt is more in line with production requirements.

Wherein, the cooling air pipeline 5 includes a second-type main pipeline and a plurality of second-type branch pipelines. The second-type main pipeline communicates with multiple second-type branch pipelines respectively. In this embodiment, there are two branch pipes of the second type, and the geometric structures such as the pipe diameter, the number of elbows, and the length of the pipes of the second branch pipes are completely consistent. In this case, the level of the distribution blowing device can be more strictly guaranteed. The direction of the blowing wind field is uniform. The dry-jet wet-spinning spinning equipment also includes a cooling air distribution blowing device 6 . The cooling air distribution and blowing device 6 includes a cavity, and an air outlet is arranged on the cavity; two second-type branch pipelines are respectively connected with the cavity, and the two second-type branch pipelines are evenly arranged on the cavity. In this embodiment, the connecting positions of the two branch pipelines and the cavity are respectively located at 1/4 positions from the axial ends of the cavity. In this case, the wind blown through the cavity can be made more uniform.

Wherein, the dry jet wet spinning method spinning equipment also includes two windshields 9 . Two windshields 9 are arranged below the two axial ends of the cavity respectively, the protruding length of the windshield 9 in the horizontal direction exceeds the farthest end of the spinning fluid, and the bottom end of the windshield 9 is in the coagulation bath 7 below the level of the coagulation bath. In this case, in the spinning process, after the cooling wind encounters the fine spinning stream, due to the relatively large resistance, part of the wind detours to the horizontal direction perpendicular to the blowing direction, where it is in contact with the baffle. The wind plates 9 meet to prevent the cooling wind from escaping laterally, thereby forming a positive pressure zone in the square space surrounded by the two rows of tows and the two windshields, ensuring that the wind field acts on the tows relatively uniformly. The quality of the finished silk obtained from the silk process is also more favorable.

Wherein, the dry-jet wet spinning method spinning equipment also includes a thermal insulation jacket, and the thermal insulation jacket is arranged on the periphery of the melt pipeline 3 and/or a plurality of spinning assemblies 4, and the dry-jet wet spinning method spinning equipment also includes a thermal insulation clip The heat preservation jacket is arranged on the periphery of the metering pump casing 2. A medium cavity is arranged in the heat preservation jacket, and the medium cavity is filled with heat preservation medium. In this embodiment, the heat preservation medium is water, and the temperature control is realized by controlling the temperature of the water. In this embodiment, in order to facilitate the adjustment of the spinning speed, the spinner assembly 4 is separately provided with a hot water insulation jacket, and the temperature is controlled independently, so as to adapt to high-speed spinning of high-viscosity melts.

Wherein, the dry jet wet spinning method spinning equipment also includes a steering rod 11 . The steering rod 11 is arranged on the edge of the exit of the coagulation bath 7, and the fine spinning flow of the bundled guide yarn passes through the steering rod 11 to complete the spinning process.

Wherein, the clustering guide rods include the first clustering guide rods 10, and the multiple groups of fine spinning streams all pass through the first clustering guide rods 10 to complete the clustering guide rods; the clustering guide rods include the first clustering guide rods, and the multiple groups Each group of spinning fine streams in the spinning streams passes through at least one clustering guide rod to complete clustering guide wires. As shown in Figure 2, there is one cluster guide wire rod 10, and there are two spinning fine streams; Guide wire rod 13, wherein, the first fine spinning stream bundles the guide wires through the second clustering guide wire rod 12, and the second spinning fine stream bundles the guide wires through the third clustering guide wire rod 13; as shown in Figure 6, the clustering The guide wire rods include three, which are respectively the second bundle guide wire rod 12, the third bundle guide wire rod 13, and the fourth bundle guide wire rod 14, wherein the first fine spinning stream is bundled and guided by the second bundle guide wire rod 12. filaments, the second spun fine stream passes through the fourth converging guide wire rod 14 and the third converging guide wire rod 13 to constrict the guide wires in sequence. Wherein, the setting quantity of the bundle guide wire rod is set according to the tolerance degree of the tow to bypassing the wrap angle of the bundle guide wire rod.

While preferred embodiments of the invention have been described, additional changes and modifications to these embodiments can be made by those skilled in the art once the basic inventive concept is appreciated. Therefore, it is intended that the appended claims be construed to cover the preferred embodiment as well as all changes and modifications which fall within the scope of the invention.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims (11)

1. a dry jet wet spinning method spinning equipment, is characterized in that, comprises melt line (3), a plurality of spinnerets (4), cooling air line (5), coagulation bath (7) and Cluster guide wire rod, The melt pipeline (3) includes a first-type main pipeline and a plurality of first-type branch pipelines, and the first-type main pipeline communicates with the first-type branch pipelines respectively; The first branch pipeline corresponds to the spinner assembly (4) one by one, and the first branch pipeline communicates with the corresponding spinneret assembly (4), so that passing through the multiple spinneret assemblies ( 4) Afterwards, the spinning melt forms multiple groups of fine spinning streams; The cooling air pipeline (5) is used to blow air to the multiple groups of fine spinning streams through the multi-directional air outlets; The clustering guide rods are arranged in the coagulation bath (7), so that the clustering guide wires are completed after the multiple groups of fine spinning streams pass through the clustering guide rods; The cooling air pipeline (5) includes a second-type main pipeline and multiple second-type branch pipelines, and the second-type main pipeline communicates with the multiple second-type branch pipelines respectively; It also includes a cooling air distribution blower (6), The cooling air distribution and blowing device (6) includes a cavity, and the cavity is provided with the multi-directional air outlet; The plurality of second-type branch pipelines are respectively communicated with the cavity; Also includes two wind deflectors (9), The two windshields (9) are respectively arranged below the two axial ends of the cavity, The protruding length of the windshield (9) in the horizontal direction exceeds the farthest end of the fine spinning stream, and the bottommost end of the windshield (9) is in the coagulation bath of the coagulation bath (7). below the liquid level. 2. The dry-jet wet spinning method spinning equipment according to claim 1, characterized in that, the specifications of the plurality of spinning assemblies (4) are the same; the specifications of the plurality of first branch pipelines are the same. 3. dry jet wet spinning method spinning equipment according to claim 1, is characterized in that, also comprises metering pump (1) and metering pump casing (2), The spinning melt enters the melt pipeline (3) after passing through the metering pump (1) and the metering pump casing (2). 4. The spinning equipment according to claim 1, characterized in that, the plurality of second-type branch pipelines are evenly arranged on the cavity. 5. The dry-jet wet-spinning method spinning equipment according to claim 1, characterized in that, it also includes a thermal insulation jacket, and the thermal insulation jacket is arranged on the melt pipeline (3) and/or a plurality of nozzles. the periphery of the wire assembly (4). 6 . The spinning equipment according to claim 3 , further comprising a thermal insulation jacket, the thermal insulation jacket is arranged on the periphery of the metering pump box ( 2 ). 7. The spinning equipment according to claim 5 or 6, characterized in that, a medium chamber is arranged in the heat preservation jacket, and the heat preservation medium is filled in the medium chamber. 8. The dry jet wet spinning method spinning equipment according to claim 7, characterized in that, the heat preservation medium is water, and the temperature control is realized by controlling the water temperature. 9. dry-jet wet spinning method spinning equipment according to claim 1, is characterized in that, described dry-jet wet spinning method spinning equipment also comprises steering rod (11), and described steering rod (11) is arranged on The outlet edge of the coagulation bath (7), The fine spinning stream of the bundled guide yarn passes through the turning rod (11) to complete the spinning process. 10. dry jet wet spinning method spinning equipment according to claim 1, is characterized in that, The clustering guide rods include a first clustering guide rod (10), and the plurality of groups of fine spinning streams all pass through the first clustering guide rods (10) to complete the clustering guide rods. 11. dry jet wet spinning method spinning equipment according to claim 1, is characterized in that, The clustering guide wire rods include a first clustering guide wire rods, Each group of spinning fine streams in the plurality of groups of spinning fine streams passes through at least one clustering guide rod to complete clustering guide wires.

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