Coagulating bath interval filament dividing device

Abstract

The invention provides a coagulating bath interval filament dividing device which comprises a coagulating bath tank used for containing coagulating bath solution, and a spinning channel is arranged in the coagulating bath tank. The spinning nozzles extend into the spinning channel, the spinning channel is provided with at least two channels which are connected with each other, and each channel is internally provided with one spinning nozzle; the distance between the spinning nozzle and the top of the spinning channel and the distance between the spinning nozzle and the bottom wall of the spinning channel are at least larger than the radius of the spinning nozzle. Through the arrangement, preliminarily formed tows in the spinning channel are completely soaked in a solution, cannot be influenced by water wave shaking and cannot touch any part, so that interference of the tows in a water bath in the forming process is eliminated, stable forming of the tows is achieved, and the tows are prevented from intersecting and being broken; and the quality of generated tows is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of spinning production, and particularly relates to a solidification bath interval filament separating device. BACKGROUND

[0002] In the manufacturing process of chemical fibers, wet spinning as an important spinning technology is widely used in the production of various fibers. However, in the wet spinning process, especially in the link of generating a filament bundle by using a spinning duct, the filament bundle is easily affected by water wave shaking and other factors, resulting in poor quality of the generated filament bundle, which becomes a key factor restricting the further development of the wet spinning technology.

[0003] In wet spinning, a spinning dope forms a stream through a spinneret, and then enters a solidification bath for solidification and molding. In this process, the spinning duct as an important channel connecting the spinneret and the solidification bath has a crucial influence on the generation quality of the filament bundle. Specifically, the air flow, temperature distribution, humidity control and other factors in the spinning duct will directly or indirectly affect the generation quality of the filament bundle; among them, water wave shaking is a common phenomenon in the spinning duct.

[0004] In the existing solidification bath device, the spinning dope is sprayed into the spinning duct through the spinneret under a certain pressure to form a filament bundle; therefore, the liquid flow in the spinning duct is easy to form water waves, and then the filament bundle is affected by unstable forces during the generation process, thereby causing problems such as deviation and shaking, resulting in a decrease in the generation quality of the filament bundle.

[0005] Therefore, it is a technical problem to be solved by those skilled in the art to design a solidification bath device capable of improving the stability in the filament bundle production process and ensuring the molding quality of the filament bundle.

[0006] Therefore, the present application is proposed. SUMMARY

[0007] The present application provides a solidification bath interval filament separating device, which solves the problem that the spinning duct in the existing solidification bath device interferes with the filament bundle during its travel in the spinning duct, resulting in poor generation quality of the filament bundle.

[0008] To solve the above technical problems, the basic idea of the technical solution of the present application is as follows:

[0009] A solidification bath interval filament separating device comprises a solidification bath tank for containing a solidification bath solution, and a spinning duct arranged in the solidification bath tank; a spinneret extends into the interior of the spinning duct, and the spinning duct has at least two channels connected with each other, and each channel is provided with one spinneret; the distance between the spinneret and the top of the spinning duct and the bottom wall of the spinning duct is at least greater than the radius of the spinneret.

[0010] Further, the spinneret is arranged at one end of the spinning channel and in the middle region in the direction of the height of the coagulation bath solution; the gap between the side wall of the channel and the outer periphery of the spinneret is less than the outer periphery radius of the spinneret.

[0011] Preferably, the gap between the outer periphery of the spinneret and the side wall of the two side channels in the width direction is equal.

[0012] Further, the ratio of the width and height of the spinning channel is greater than 1:1.2 and less than 1:10; the ratio of the width of the spinning channel and the width of the coagulation bath tank is greater than 1:8.

[0013] Preferably, the ratio of the width and height of the spinning channel is greater than 1:1.5 and less than 1:8; the ratio of the width of the spinning channel and the width of the coagulation bath tank is greater than 1:10.

[0014] More preferably, the ratio of the width and height of the spinning channel is greater than 1:1.8 and less than 1:6; the ratio of the width of the spinning channel and the width of the coagulation bath tank is greater than 1:10 and less than 1:15.

[0015] Most preferably, the ratio of the width and height of the spinning channel is greater than 1:2 and less than 1:4; the ratio of the width of the spinning channel and the width of the coagulation bath tank is greater than 1:10 and less than 1:12.

[0016] Further, the spinning channels are arranged in the horizontal direction with a spacing equal to or less than the width of one spinning channel.

[0017] Preferably, the spacing between the two adjacent spinning channels is less than the width of one channel.

[0018] Further, a spacing plate extending in the spinning direction is arranged in each spinning channel to form two adjacent channels; the spacing plate forms the common side wall of the two adjacent channels.

[0019] Preferably, the side walls of the two adjacent channels are parallel and have the same spacing.

[0020] Further, the two spinnerets arranged in the two adjacent channels are connected to the same spinning liquid feeding pipe near the outer side of the channel, or each is connected to a spinning liquid feeding pipe.

[0021] Preferably, the outer periphery diameters of the two spinnerets are equal.

[0022] Further, the plurality of spinning channels are provided with two layers, and the adjacent upper and lower spinning channels are arranged in a staggered manner; the lower spinneret and the upper spinneret face the same direction.

[0023] Preferably, the lower spinneret is arranged near the side of the upper spinneret connected to the spinning liquid feeding pipe.

[0024] Further, the bottom wall of the upper spinning duct is provided with a clamping groove, which is clamped with the top of the side wall of the lower spinning duct.

[0025] Further, the spinning duct comprises a fixed section and a pulling section which is slidably connected to the fixed section; the pulling section is arranged at one end of the spinning duct close to the spinneret;

[0026] Preferably, the length of the pulling section extending along the spinning direction is less than the length of the fixed section extending along the spinning direction.

[0027] Further, the pulling section is arranged close to the outside of the fixed section; the outer wall of the fixed section is provided with a protruding structure extending along the spinning direction, the inner wall of the pulling section is provided with a sliding groove matched with the protruding structure, and the protruding structure is clamped in the sliding groove; preferably, the pulling section is in an E-shaped structure.

[0028] After the above technical scheme is adopted, the present application has the following beneficial effects compared with the prior art:

[0029] 1. In the present application, the spinneret arranged inside the spinning duct is arranged at a position with a distance from the top of the spinning duct and the bottom wall of the spinning duct being at least greater than the radius of the spinneret, so that the spinneret is completely immersed in the solution in the coagulation bath, and the initially formed filaments in the spinning duct are not affected by the water wave and do not touch any components, so as to eliminate the interference of the filament forming process in the water bath and avoid filament breakage; at the same time, the spinning duct is arranged to have at least two channels connected with each other, and one spinneret is arranged in each channel, so as to avoid the crossing of the filaments and further realize the stable formation of the filaments and greatly improve the quality of the filament generation.

[0030] 2. In the present application, the spinneret is arranged in the middle region in the height direction of the coagulation bath solution, and the gap between the outer periphery of the spinneret and the side wall of the channel is less than the outer periphery radius, so that the compact arrangement between the spinneret and the spinning duct can further reduce the influence of the water wave on the filament generation process and help the stable formation of the filaments.

[0031] 3. In the present application, the spacer plate extending along the direction of the spinneret is arranged in the middle of the spinning duct, so that at least two channels are formed inside the same spinning duct, each channel corresponds to one spinneret, and the adjacent spinnerets are separated by the spacer plate, which can play a role in separating the filaments and is more intuitive, facilitating the operation of the process personnel and improving the stability of the filament production; at the same time, the spinning duct can be used in cooperation with single spinneret and double spinneret, etc., improving the compatibility of different styles of spinnerets.

[0032] 4、The present application realizes the purpose of fully utilizing the internal space of the coagulation bath tank by arranging a plurality of spinning ducts staggered in upper and lower two layers, so that the production spindle position is dense; and each channel corresponding to the spinning nozzle is completely isolated, so that the cross-influence of the tows formed in the adjacent channels is avoided, and the spinning quality is further improved.

[0033] Meanwhile, the present application has simple structure, remarkable effect and is suitable for popularization and use.

[0034] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0035] The accompanying drawings, which are part of the present application, serve to further understand the present application, and the illustrative embodiments of the present application and their descriptions serve to explain the present application but do not constitute improper limitations on the present application. Obviously, the accompanying drawings in the following description are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor. In the drawings:

[0036] Figure 1 It is a whole structure schematic view of the coagulation bath interval filament separation device in the embodiment of the present application;

[0037] Figure 2 It is a structure schematic view of the spinning duct in the embodiment of the present application;

[0038] Figure 3 It is a structure schematic view of the spinning duct in another embodiment of the present application;

[0039] Figure 4 It is a structure schematic view of the drawing section in the embodiment of the present application.

[0040] Main element description in the drawing:

[0041] 1, coagulation bath tank; 2, spinning duct; 201, side wall; 202, bottom wall; 21, channel; 211, fixed section; 212, drawing section; 3, spinning nozzle; 31, upper layer spinning nozzle; 32, lower layer spinning nozzle; 4, interval plate; 5, spinning liquid feeding pipe.

[0042] It should be noted that these drawings and written descriptions are not intended to limit the concept range of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments will be clearly and completely described below with reference to the drawings of the embodiments of the present application. The following embodiments are used to illustrate the present application but not to limit the scope of the present application.

[0044] In the description of the present application, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0045] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] The embodiment discloses a coagulation bath interval filament device, which is applied to a spinning mechanical equipment, and the spinning mechanical equipment can be any type of existing equipment; the coagulation bath device comprises a coagulation bath tank 1 for containing a coagulation bath solution, and a spinning duct 2 is arranged in the coagulation bath tank 1; a spinneret 3 is arranged in the spinning duct 2, and a spinning solution stream pressed out of capillary holes of the spinneret 3 generates a solidification reaction after entering the coagulation bath, and is used for forming a filament bundle.

[0047] As shown in Figures 1 to 4 In the embodiment of the present application, a plurality of spinning ducts 2 are arranged in the coagulation bath tank 1, and a plurality of spinnerets 3 are correspondingly arranged in the plurality of spinning ducts 2, and the distance between the spinneret 3 and the top of the spinning duct 2 and the bottom wall 202 of the spinning duct is at least greater than the radius of the spinneret 3, for example, for expansion and description; of course, in the embodiment, the position of the spinneret 3 can be specifically arranged according to the height of the spinning duct 2, so as to ensure that the spinneret is arranged at a position having a certain depth in the spinning duct 2, and has a certain distance from the bottom wall of the spinning duct 2.

[0048] As shown in Figure 1As shown, in the implementation of the present application, one end of the spinning duct 2 is fixed on the coagulation bath tank 1, and the opposite end is internally provided with the same spinneret 3; moreover, the spinning duct 2 has two adjacent channels 21 connected with each other, and each channel 21 is provided with one spinneret 3; the distance between the spinneret 3 and the top of the channel 21 and the bottom wall 202 of the channel 21 is at least greater than the radius of the spinneret 3; so that the spinneret is completely immersed in the solution in the coagulation bath tank 1, and has a certain distance from the liquid surface of the coagulation bath solution, thereby making the initially formed filaments in the spinning duct 2 not be affected by water wave shaking, and not touching any components, so as to eliminate the interference of the filament forming process in the water bath, and avoid the generation of broken filaments; avoid the crossing of the filaments, and further realize the stable formation of the filaments, and greatly improve the quality of the filament generation.

[0049] Specifically, in the embodiment, the gap between the side wall 201 of the channel 21 and the outer periphery of the spinneret 3 is less than the outer periphery radius, so that the spinneret 3 is compactly arranged in each channel 21 in the horizontal direction, and the side wall 201 can block more water wave shaking for the spinneret 3, further reducing the influence of water wave shaking during the filament generation, and helping the stable formation of the filaments.

[0050] Preferably, in the embodiment, the gap between the outer periphery of the spinneret 3 and the side wall 201 of the two side channels 21 in the width direction is equal in size.

[0051] As shown in the figure, Figure 2 In the embodiment, a spacing plate 4 is arranged between the two side walls 201 of the spinning duct 2, extending in the direction of the spinneret 3, dividing the spinning duct 2 into the above-mentioned two channels 21, and the spacing plate 4 is equivalent to the side wall 201 shared by the two channels 21.

[0052] Specifically, in the embodiment, the spinning duct 2 has an E-shaped groove structure composed of the above-mentioned two adjacent channels 21; the two channels 21 provide independent channels for each spinneret 3, facilitate filament separation, so that the filaments generated by the spinneret 3 travel in the respective channels, and the filaments do not cross each other, avoiding the spread of broken filaments and dead filaments, and further improving the quality of the filaments.

[0053] As shown in the figure, Figures 1 to 2 In the embodiment, the ratio of the width to the height of the spinning duct 2 is greater than 1:1.2 and less than 1:10; the ratio of the width of the spinning duct 2 to the width of the coagulation bath tank is greater than 1:8; and the width of each channel is half of the width of the spinning duct 2.

[0054] Preferably, in the embodiment, the ratio of the width to the height of the spinning duct 2 is greater than 1:1.5 and less than 1:8; the ratio of the width of the spinning duct 2 to the width of the coagulation bath tank 1 is greater than 1:10;

[0055] More preferably, in this embodiment, the ratio of the width to the height of the spinning channel 2 is greater than 1:1.8 and less than 1:6; the ratio of the width of the spinning channel 2 to the width of the coagulation bath 1 is greater than 1:10 and less than 1:15.

[0056] In the most preferred embodiment, the ratio of the width to the height of the spinning channel 2 is greater than 1:2 and less than 1:4; the ratio of the width of the spinning channel 2 to the width of the coagulation bath 1 is greater than 1:10 and less than 1:12.

[0057] In the above embodiments, the specific width of the spinning channel 2 can be set according to the outer circumferential diameter of the spinneret 3 and the width of the coagulation bath 1, so as to ensure that the spinning channel 2 is compactly arranged in the coagulation bath 1 in the horizontal direction, and the spinneret 3 is compactly arranged in the channel 21 of the spinning channel 2 in the horizontal direction, thereby reducing the excess space in the spinning channel 2.

[0058] Preferably, in this embodiment, the sidewall 201 of the channel is vertically arranged on the bottom wall 202 of the channel.

[0059] Specifically, in this embodiment, the gap between the spinneret 3 and the side wall 201 of the channel 21 is much smaller than the distance between the spinneret 3 and the bottom wall 202 of the channel 21. This allows the spinneret 3 to be positioned at a certain depth within the spinning channel 2, completely submerged below the liquid surface and at a distance from it, thus preventing the generated filaments from being affected by liquid surface fluctuations. At the same time, there is also a certain distance between the spinneret 3 and the bottom wall 202 of the channel 21, ensuring that the filaments do not come into contact with the bottom wall 202 of the channel 21 during the filament generation process, preventing filament breakage and thus avoiding any impact on the quality of the generated filaments.

[0060] In some specific embodiments, multiple partition plates 4 can also be provided between the two spinning channel sidewalls 201. The partition plates 4 are all parallel to the sidewalls 201 of the spinning channel 2, which can separate adjacent spinnerets 3 inside the same spinning channel 2 and divide them into any number of channels, thereby improving the compatibility of the spinning channel 2 with the spinnerets 3.

[0061] like Figure 1 As shown, in this embodiment, the ends of the two spinnerets 3 located in two adjacent channels 21 near the outside of the channel 21 are connected to the spinning solution feed pipe 5, which is used by the spinnerets 3 to generate filament bundles.

[0062] Specifically, in the embodiment, two spinning heads 3 in two adjacent channels 21 can be connected to the same spinning liquid feeding pipe 5 to form a single-group double-head spinning head 3. Of course, in the embodiment, two spinning heads 3 can be respectively connected to one spinning liquid feeding pipe 5 to form two double-group double-head spinning heads 3. The spinning ducts 2 can be used in cooperation with different types of spinning heads 3 such as single-group single-head spinning heads 2 and single-group double-head spinning heads 3, thereby improving the compatibility of the spinning heads 3.

[0063] As shown in Figure 1 the embodiment, the spinning ducts 2 are arranged in two layers in the coagulation bath tank 1, so that the internal space of the coagulation bath tank 1 can be fully utilized to make the process production spindle positions dense.

[0064] Specifically, in the embodiment, the spinning ducts 2 are arranged in two layers in the vertical direction, and the adjacent spinning ducts 2 are staggered in upper and lower layers. In addition, the side wall 201 of the lower spinning duct is arranged below the bottom wall 202 of the upper spinning duct, and is covered by the bottom wall 202 of the upper spinning duct, so that more spinning ducts 2 and spinning heads 3 can be placed in the coagulation bath tank 1, and the internal space of the coagulation bath tank 1 is further fully utilized.

[0065] Preferably, in the embodiment, the spacing between two adjacent spinning ducts 2 arranged in the same layer in the horizontal direction is less than the width of one channel 21.

[0066] In another specific embodiment, the upper end of the side wall 201 of the lower spinning duct and the lower end of the side wall of the upper spinning duct 2 close to the side of the lower spinning duct 2 can be integrally formed in the adjacent two upper and lower spinning ducts 2 of the several spinning ducts 2. Of course, they can only be fixed and placed at the relative position without being directly connected. The arrangement can be set according to the overall strength of the spinning duct 2, the fixing mode and other specific conditions. Of course, the spinning duct 2 can also be arranged in three layers or more than three layers, and each layer is staggered.

[0067] Preferably, in the embodiment, the upper and lower two layers of spinning ducts 2 arranged in the horizontal direction are staggered, and the lower spinning head 32 arranged in the lower spinning duct 2 is arranged close to the side of the upper spinning head 31 in the upper spinning duct 2 connected to the spinning liquid feeding pipe 5.

[0068] In some preferred embodiments, the bottom wall 202 of the upper spinning duct 2 is provided with a clamping groove on the outer side, which is clamped with the top of the side wall 201 of the lower spinning duct 2; two lower spinning ducts 2 are arranged on both sides of the bottom of the upper spinning duct 2 near the middle position, and the lower two spinning ducts 2 are respectively clamped with the clamping groove on the outer side of the bottom wall 202 of the upper spinning duct 2 near one side of the side wall 201 of the upper spinning duct 2, thereby providing sufficient support for the upper spinning duct 2; when the length of the spinning duct 2 is relatively long, the stable arrangement of the upper spinning duct 2 can also be ensured, so that the spinning duct 2 is kept horizontally placed, and the formation of the yarn is not affected by the gravity and other factors during the yarn production process, thereby avoiding the interference with the formation of the yarn.

[0069] In the embodiment, the spinning duct 2 further comprises a fixed section 211 and a pulling section 212, the fixed section 211 is fixed on the coagulation bath tank 1 away from one end of the spinneret 3; the pulling section 212 is arranged at one end close to the spinneret 3 and is slidably connected to the fixed section, and can slide along the length direction of the spinning duct 2.

[0070] When the yarn production process is in progress, the pulling section 212 is in an open state, and one end of the pulling section 212 extends away from the fixed section 211; when the process personnel need to replace the upper spinneret 3, since the spinneret 3 is arranged in the spinning duct 2 at a position with a certain depth, the pulling section 212 is pulled to move and contract in the spinning direction of the spinneret 3 in the spinning duct 2, thereby facilitating the personnel to disassemble and replace the lower spinneret, and improving the efficiency and convenience of the replacement of the spinneret; at the same time, when the process personnel need to replace the lower spinneret 3, the principle is the same as above, and the pulling section 212 of the upper spinning duct 2 and the pulling section 212 of the lower spinning duct 2 are pulled at the same time, thereby facilitating the personnel to disassemble and replace the lower spinneret, and further improving the efficiency and convenience of the replacement of the upper and lower spinnerets 3.

[0071] In some possible embodiments, the pulling section 212 is only arranged at one end of the upper spinning duct 2.

[0072] Preferably, in the embodiment, the length of the pulling section 212 extending in the spinning direction is less than the length of the fixed section 211 extending in the spinning direction.

[0073] As shown in Figures 2 to 4 In the embodiment, the pulling section 212 is arranged close to the outer side of the fixed section 211; of course, it can also be arranged on the inner side of the fixed section 211.

[0074] Specifically, in the embodiment, the outer side wall of the fixed section 211 is provided with a protruding structure extending in the spinning direction, the inner side wall of the pulling section 211 is provided with a sliding groove matched with the protruding structure, and the protruding structure is clamped in the sliding groove.

[0075] Preferably, in the embodiment, the pulling section 212 and the bottom of the fixed section 211 are each provided with a clamping groove protruding inwardly and matching with each other, so that the matching degree between the pulling section 212 and the fixed section 211 is higher, and when the process personnel pull the pulling section 212, the clamping groove can play a guiding role to improve the smoothness of the pulling section 212 when moving.

[0076] In some preferred embodiments, the partition plate 4 includes a fixed partition plate arranged in the fixed section 211 and a movable partition plate arranged in the pulling section 212; the pulling section 212 is an E-shaped groove structure.

[0077] Specifically, in the above preferred embodiment, the fixed partition plate 41 includes a hollow structure with openings at both ends formed by the bottom wall of the fixed section 211 extending vertically upward, the pulling section 211 is arranged outside the fixed section 211, and the movable partition plate is arranged inside the hollow structure; the thickness of the movable partition plate 42 is smaller than the thickness of the hollow structure, and the two are arranged compactly, when the pulling section 212 is moved, the movable partition plate is clamped in the hollow structure, this installation structure is stable, further improving the stability of the pulling section 212 during sliding, and avoiding large fluctuations in the coagulation bath solution, facilitating the user to replace the spinneret 3, and also being conducive to maintaining the stability of the coagulation bath system.

[0078] In another possible embodiment, one side of the pulling section 212 is provided with an opening, which can be sleeved on one side of the end of the fixed section 211 to realize pulling movement with the fixed section 211, and the connection mode is set according to specific conditions to ensure the stability and smoothness of the pulling section 212 during movement.

[0079] In the embodiment, the spinneret 3 is compactly arranged at a position with a certain depth in the spinning duct 2, which has a certain distance from the top and bottom wall 202 of the spinning duct 2 placed completely in the coagulation bath solution, and also has a very small gap with the side wall, which can avoid the influence of water wave shaking and will not touch any part; it can not only ensure the stability of the generated yarn, but also fully utilize the space in the coagulation bath tank 1 to greatly improve the quality of the generated yarn.

[0080] The above only describes the preferred embodiments of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above with the preferred embodiments, it is not intended to limit the present application, and any skilled person in the art can make some changes or modifications to the above-mentioned technical content without departing from the scope of the technical solution of the present application to obtain equivalent embodiments with equivalent changes. The embodiments in the above embodiments can be further combined or replaced, as long as they do not deviate from the content of the technical solution of the present application, and any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present application are still within the scope of the present application.

Claims

1. A coagulation bath interval filament separation device, comprising a coagulation bath tank (1) for containing coagulation bath solution, a spinning duct (2) arranged in the coagulation bath tank (1), and a spinneret (3) extending into the spinning duct (2), characterized in that: the spinning duct (2) has at least two channels (21) connected to each other, and one spinneret (3) is arranged in each channel (21); and the distance between the spinneret (3) and the top of the spinning duct (2) and the bottom wall (202) of the spinning duct is at least greater than the radius of the spinneret (3).

2. The coagulation bath interval filament separation device according to claim 1, characterized in that: the spinneret (3) is arranged at one end of the spinning duct (2) and in the middle region in the height direction of the coagulation bath solution; the gap between the side wall (201) of the channel (21) and the outer periphery of the spinneret (3) is less than the outer periphery radius of the spinneret (3); and preferably, the gap between the outer periphery of the spinneret (3) and the side wall (201) of the two side channels in the width direction is equal.

3. The coagulation bath interval filament separation device according to claim 2, characterized in that: the ratio of the width to the height of the spinning duct (2) is greater than 1:1.2 and less than 1:10, and the ratio of the width of the spinning duct (2) to the width of the coagulation bath tank (1) is greater than 1:8; preferably, the ratio of the width to the height of the spinning duct (2) is greater than 1:1.5 and less than 1:8, and the ratio of the width of the spinning duct (2) to the width of the coagulation bath tank (1) is greater than 1:10; more preferably, the ratio of the width to the height of the spinning duct (2) is greater than 1:1.8 and less than 1:6, and the ratio of the width of the spinning duct (2) to the width of the coagulation bath tank (1) is greater than 1:10 and less than 1:15; and most preferably, the ratio of the width to the height of the spinning duct (2) is greater than 1:2 and less than 1:4, and the ratio of the width of the spinning duct (2) to the width of the coagulation bath tank (1) is greater than 1:10 and less than 1:

12.

4. The coagulation bath interval filament separation device according to claim 3, characterized in that: the spinning ducts (2) are arranged in the horizontal direction at intervals, and the interval between two adjacent spinning ducts (2) is equal to or less than the width of one spinning duct (2); and preferably, the interval between two adjacent spinning ducts (2) is less than the width of one channel (21).

5. The coagulation bath interval filament separation device according to any one of claims 1 to 4, characterized in that: one interval plate (4) extending in the spinning direction is arranged in each spinning duct (2) to form two adjacent channels (21); the interval plate (4) forms the common side wall (201) of the two adjacent channels (21); and preferably, the side walls (201) of the two adjacent channels (21) are parallel and have the same interval.

6. The coagulation bath interval filament separation device according to claim 5, characterized in that: the two spinnerets (3) arranged in the two adjacent channels (21) are connected to the same spinning solution feeding pipe (5) or each connected to a spinning solution feeding pipe (5) at the end close to the outside of the channel (21). ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Preferably, the outer circumferential diameters of the two spinnerets (3) are equal.

7. The coagulation bath interval filament separating device according to claim 6, characterized in that: The spinning ducts (2) are provided with two layers, and the adjacent upper and lower spinning ducts (2) are staggered arranged; The lower spinneret (32) and the upper spinneret (31) are oriented in the same direction; Preferably, the lower spinneret (32) is arranged close to the side of the upper spinneret (31) connected with the spinning dope feeding pipe (5).

8. The coagulation bath interval filament separating device according to claim 7, characterized in that: The bottom wall (202) of the upper spinning duct (2) is provided with a clamping groove on the outer side, and the top of the side wall (201) of the lower spinning duct (2) is clamped.

9. The coagulation bath interval filament separating device according to claim 8, characterized in that: The spinning duct (2) comprises a fixed segment (211) and a pull-out segment (212) slidably connected to the fixed segment (211); The pull-out segment (212) is arranged at one end of the spinning duct (2) close to the spinneret (3); Preferably, the length of the pull-out segment (212) extending along the spinning direction is less than the length of the fixed segment (211) extending along the spinning direction.

10. The coagulation bath interval filament separating device according to claim 9, characterized in that: The pull-out segment (212) is arranged close to the outer side of the fixed segment (211); The outer side wall of the fixed segment (211) is provided with a protruding structure extending along the spinning direction, and the inner side wall of the pull-out segment (211) is provided with a sliding groove matched with the protruding structure, and the protruding structure is clamped in the sliding groove; Preferably, the pull-out segment (212) is an E-shaped groove.

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