Coagulating bath liquid preparation system applied to meta-aramid fiber spinning section

Abstract

The invention discloses a coagulating bath liquid preparation system applied to a meta-position aramid fiber spinning section, which comprises a preparation liquid circulating cooling liquid tank, a condensation mechanism is arranged outside the preparation liquid circulating cooling liquid tank, a circulating liquid inlet is arranged at the top end of the preparation liquid circulating cooling liquid tank, and a liquid outlet is arranged at the bottom end of the preparation liquid circulating cooling liquid tank. A circulating liquid outlet is formed in the bottom end of the blending liquid circulating cooling liquid tank, a stirrer is mounted in the blending liquid circulating cooling liquid tank and is driven to rotate by a first rotating motor at the top end of the blending liquid circulating cooling liquid tank, and a plurality of annular grooves are formed in the outer wall of the blending liquid circulating cooling liquid tank. The space layout is optimized, the structure is compact, the whole system structure is compact, the layout of all parts is reasonable, and the space is effectively utilized. Meanwhile, through the modular design, all the components are easy to maintain and replace, and the long-term operation cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of meta-aramid fiber spinning, and in particular to a coagulation bath liquid preparation system applied to a meta-aramid fiber spinning section. Background Art

[0002] The spinning process includes metered spinning, coagulation and plasticization stretching. The process uses ethylene glycol aqueous solution to cool down (control the temperature at about 10°C). In the coagulation process, the spinning solution is coagulated and formed under the action of a coagulation bath (a mixture of DMAC and water) to form a filament bundle.

[0003] In the spinning process, after the spinning solution is extruded from the spinneret, the solvent DMAC in the spinning solution diffuses into the spinning solution in the coagulation bath and the coagulant water, causing a phase change and transforming into primary fibers. The coagulation bath is a mixture of DMAC and water, the concentration of DMAC in the coagulation bath is about 60%, and the temperature is controlled at about 10°C. Since the solvent DMAC in the spinning solution diffuses into the coagulation bath and the coagulant water diffuses into the spinning solution, the concentration of DMAC in the coagulation bath will continue to increase. Therefore, a coagulation bath liquid preparation system is equipped with a coagulation bath storage tank, a heat exchanger, a mixing tank, a delivery pump and other equipment to continuously replenish pure water and circulate continuously to ensure that the concentration and temperature of the coagulation bath remain stable for a long time. The device structure in the prior art is complex, the floor space is large, and the jacket cooling method is generally adopted. Due to the integral structure, it is not convenient to replace, maintain and repair each component later, and the use cost is high. Summary of the invention

[0004] In order to solve the problems mentioned in the above background technology, the present invention provides a coagulation bath liquid preparation system applied to the meta-aramid fiber spinning section.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A coagulation bath preparation system used in a meta-aramid fiber spinning section comprises a preparation liquid circulating coolant tank, wherein a condensing mechanism is installed outside the preparation liquid circulating coolant tank, a circulating liquid inlet is provided at the top end of the preparation liquid circulating coolant tank, a circulating liquid outlet is provided at the bottom end of the preparation liquid circulating coolant tank, an agitator is installed inside the preparation liquid circulating coolant tank, and the agitator is driven to rotate by a first rotating motor at the top end of the preparation liquid circulating coolant tank.

[0007] Preferably, a plurality of annular grooves are provided on the outer wall of the preparation liquid circulating coolant tank, and the annular grooves are evenly distributed from top to bottom. The condensation mechanism includes two pairs of arc cooling tube groups, and the two pairs of arc cooling tube groups are aligned and clamped on both sides of the preparation liquid circulating coolant tank. The arc cooling tube group includes a plurality of cooling bends, and the cooling bends correspond to the annular grooves one by one.

[0008] Preferably, the cooling bend located at the top is connected to a coolant inlet and outlet pipe, one group of arc-shaped cooling tube groups is located on the cooling bend at the bottom and a first plug-in connector is installed, and another group of arc-shaped cooling tube groups is located on the cooling bend at the bottom and a second plug-in connector is installed, the first plug-in connector is plug-matched with the second plug-in connector, and the cooling bends are connected in series in a serpentine manner between the ends through series tubes.

[0009] Preferably, a plurality of stirring branches are fixed on the stirrer, and the stirring branches are evenly distributed from top to bottom on the stirrer.

[0010] Preferably, the relative positions of the cooling bends in the arc-shaped cooling tube group are fixed by connecting strips, a first arc-shaped bracket is fixed on the connecting strip, and an arc-shaped pressure plate is fixed on the top of the first arc-shaped bracket.

[0011] Preferably, two horizontal drive boxes are fixed to the top and bottom ends of the prepared liquid circulating coolant tank, the horizontal drive boxes are provided with two output ends, and the two output ends are fixed with second arc-shaped brackets, an arc-shaped clamping piece is provided below the second arc-shaped bracket, and a telescopic rod is provided between the second arc-shaped bracket and the arc-shaped clamping piece.

[0012] Preferably, the telescopic rod has sliding damping, a clamping groove is formed at the bottom end of the arc-shaped clamping member, and one side of the arc-shaped pressing plate extends into the clamping groove.

[0013] Preferably, a horizontally arranged bidirectional threaded rod is rotatably installed inside the horizontal driving box, and two sliding blocks are installed on the external threads of the bidirectional threaded rod. A connecting rod is fixed at one end of the two sliding blocks away from each other, and the connecting rod is movably extended to the outside of the horizontal driving box and fixed to the second arc-shaped bracket.

[0014] Preferably, a first bevel gear is fixed at the middle position of the bidirectional threaded rod, a drive rod is rotatably mounted on the horizontal drive box, one end of the drive rod extends into the horizontal drive box and is fixed with a second bevel gear, and the first bevel gear is meshed with the second bevel gear.

[0015] Preferably, the other end of the driving rod extends to the outside of the horizontal driving box and is fixed with a first spur gear, a synchronous gear is provided between the two first spur gears, the first spur gear is meshed with the synchronous gear, a second rotating motor is fixed on the mixing liquid circulating coolant tank, a second spur gear is fixed to the output end of the second rotating motor, and the second spur gear is meshed with the synchronous gear.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. Improve mixing efficiency and uniformity: By installing a stirrer and multiple stirring branches on it, and setting a first rotary motor drive on the top of the stirrer, the mixing efficiency and uniformity of the coagulation bath can be significantly improved. This helps to ensure the stability of the coagulation bath composition during the spinning process and improve the quality of the fiber product.

[0018] 2. Enhanced cooling effect: The external condensation mechanism is adopted, including multiple pairs of arc-shaped cooling tube groups, which are closely matched with the annular grooves on the outer wall of the mixing liquid circulation coolant tank to form an efficient heat exchange system. The coolant circulates in the cooling elbow, effectively absorbs the heat in the tank, reduces the temperature of the coagulation bath, and meets the strict requirements of the spinning process for temperature control.

[0019] 3. Improve operational convenience: The cooling tube group is designed with quick connection and disassembly. Through the combination of arc-shaped pressing plate, telescopic rod and arc-shaped clamp, the cooling tube group can be quickly installed and disassembled. This not only simplifies the maintenance process, but also reduces downtime and improves production efficiency.

[0020] 4. Realize synchronous drive and precise control: The transmission system composed of bidirectional threaded rods, bevel gears, spur gears and synchronous gears is used to realize the synchronous movement of the horizontal drive boxes on both sides. This design ensures the stability and synchronization of the cooling tube group during the clamping process, and improves the overall accuracy and reliability of the system.

[0021] 5. Optimized space layout and compact structure: The entire system has a compact structure, and the layout of each component is reasonable, which effectively utilizes the space. At the same time, through modular design, each component is easy to maintain and replace, reducing long-term operating costs.

[0022] 6. Improve production efficiency and product quality: Due to the significant improvement in mixing efficiency and cooling effect, as well as the enhancement of operational convenience, this solution helps to improve the production efficiency of the meta-aramid fiber spinning section. At the same time, stable coagulation bath composition and temperature control help to improve the quality and consistency of fiber products. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a first perspective stereogram of the present invention;

[0025] Figure 2 It is a second viewing angle stereogram of the present invention;

[0026] Figure 3 It is a cross-sectional view of the mixing liquid circulating cooling liquid tank of the present invention;

[0027] Figure 4 It is a first-view stereoscopic diagram of the condensation mechanism of the present invention;

[0028] Figure 5 A second perspective perspective view of the condensing mechanism of the present invention;

[0029] Figure 6 It is a schematic diagram of the structure of the cooling elbows of the present invention connected in series through series pipes;

[0030] Figure 7 It is an enlarged detail view of the position of the horizontal drive box of the present invention;

[0031] Figure 8 It is a schematic diagram of the internal structure of the horizontal drive box of the present invention;

[0032] In the figure: 1 a mixing liquid circulation coolant tank, 101 a circulating liquid inlet, 102 a circulating liquid outlet, 103 annular grooves, 104 a stirrer, 105 a first rotating motor, 106 a stirring branch, 2 a condensing mechanism, 201 a cooling elbow, 202 a connecting strip, 203 a series pipe, 204 a prism positioning pin, 205 a prism positioning sleeve, 206 a first plug connector, 207 a second plug connector, 208 a cooling liquid inlet and outlet pipe, 209 a first arc bracket, 210 an arc pressure plate, 3 a horizontal driving box, 301 a connecting rod, 302 a second arc bracket, 303 a telescopic rod, 304 an arc clamp, 305 a bidirectional threaded rod, 306 a slider, 307 a first bevel gear, 308 a driving rod, 309 a first spur gear, 310 a second bevel gear, 311 a synchronous gear, 312 a second spur gear, and 313 a second rotating motor. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Example 1

[0035] Reference Figure 1-8, a coagulation bath preparation system used in a meta-aramid fiber spinning section, comprising a preparation liquid circulating cooling liquid tank 1, a preparation liquid circulating cooling liquid tank 1, a condensation mechanism 2 is installed outside the preparation liquid circulating cooling liquid tank 1, a circulating liquid inlet 101 is provided at the top of the preparation liquid circulating cooling liquid tank 1, a circulating liquid outlet 102 is provided at the bottom of the preparation liquid circulating cooling liquid tank 1, an agitator 104 is installed inside the preparation liquid circulating cooling liquid tank 1, and the agitator 104 is driven to rotate by a first rotating motor 105 at the top of the preparation liquid circulating cooling liquid tank 1;

[0036] The temperature of the coagulation bath liquid will increase during use. The coagulation bath liquid is introduced into the prepared liquid circulation cooling liquid tank 1 from the circulation liquid inlet 101 by a circulation pump, and the coagulation bath liquid is circulated and cooled by the condensation mechanism 2 .

[0037] Example 2

[0038] Reference Figure 1-8 The difference between this embodiment and embodiment 1 is that a plurality of annular grooves 103 are provided on the outer wall of the mixing liquid circulating coolant tank 1, and the annular grooves 103 are evenly distributed from top to bottom, and the condensing mechanism 2 includes two pairs of arc-shaped cooling tube groups, and the two pairs of arc-shaped cooling tube groups are aligned and clamped on both sides of the mixing liquid circulating coolant tank 1, and the arc-shaped cooling tube groups include a plurality of cooling elbows 201, and the cooling elbows 201 correspond to the annular grooves 103 one by one;

[0039] The plurality of cooling elbows 201 are closely matched with the annular groove 103 on the outer wall of the mixing liquid circulation cooling liquid tank 1 to form an efficient heat exchange system. The cooling liquid circulates in the cooling elbow 201, effectively absorbing the heat in the tank, reducing the temperature of the coagulation bath liquid, and meeting the strict requirements of the spinning process for temperature control.

[0040] The cooling elbow 201 at the top is connected with a coolant inlet and outlet pipe 208, one group of arc cooling pipe groups is located at the bottom of the cooling elbow 201 and is installed with a first plug connector 206, and another group of arc cooling pipe groups is located at the bottom of the cooling elbow 201 and is installed with a second plug connector 207, the first plug connector 206 is plugged and matched with the second plug connector 207, and the cooling elbows 201 are connected in serpentine series through the series connection pipe 203;

[0041] The first plug connector 206 is plugged and matched with the second plug connector 207, so that the two groups of arc-shaped cooling tube groups can be connected in series, and the two can be conveniently combined and separated. After the coolant passes through one of the coolant inlet and outlet pipes 208, it flows through each cooling elbow 201 in a serpentine shape in sequence, and finally flows out from the other coolant inlet and outlet pipe 208. The coolant can more fully exchange heat with the coagulation bath liquid, thereby improving the heat exchange effect.

[0042] Example 3

[0043] Reference Figure 1-8 The difference between this embodiment and embodiment 2 is that a plurality of stirring branches 106 are fixed on the stirrer 104, and the stirring branches 106 are evenly distributed from top to bottom on the stirrer 104, which can stir the coagulation bath liquid, and can significantly improve the mixing efficiency and uniformity of the coagulation bath liquid. This helps to ensure the stability of the coagulation bath liquid composition during the spinning process, improve the quality of the fiber product, and can ensure the uniformity of the internal temperature of the coagulation bath liquid, and improve the cooling effect of the coagulation bath liquid.

[0044] Example 4

[0045] Reference Figure 1-8 The difference between this embodiment and embodiment 2 is that the relative positions of the cooling bends 201 in the arc-shaped cooling tube group are fixed by connecting strips 202, a first arc-shaped bracket 209 is fixed on the connecting strip 202, an arc-shaped pressure plate 210 is fixed on the top of the first arc-shaped bracket 209, the relative positions of the cooling bends are fixed by the connecting strip 202 and the first arc-shaped bracket 209, and the arc-shaped pressure plate 210 further stabilizes the cooling tube group.

[0046] Among them, two horizontal driving boxes 3 are fixed on the top and bottom ends of the mixing liquid circulating coolant tank 1, the horizontal driving box 3 is provided with two output ends, and the two output ends are fixed with a second arc-shaped bracket 302, an arc-shaped clamping piece 304 is provided below the second arc-shaped bracket 302, a telescopic rod 303 is provided between the second arc-shaped bracket 302 and the arc-shaped clamping piece 304, two horizontal driving boxes 3 are respectively provided on the top and bottom of the tank, and the arc-shaped pressure plate is clamped by the telescopic rod 303 and the arc-shaped clamping piece 304 to realize the rapid installation and disassembly of the cooling tube group.

[0047] Among them, the telescopic rod 303 has sliding damping, and a clamping groove is opened at the bottom end of the arc-shaped clamping piece 304. One side of the arc-shaped pressure plate 210 extends into the clamping groove to ensure stable clamping and smooth operation. When the length of the telescopic rod 303 is adjusted, it can be locked in the current length state without being affected by the gravity of the arc-shaped clamping piece 304.

[0048] Example 5

[0049] Reference Figure 1-8 The difference between this embodiment and embodiment 4 is that a horizontally arranged bidirectional threaded rod 305 is rotatably installed inside the horizontal driving box 3, and two sliders 306 are installed on the external threads of the bidirectional threaded rod 305. A connecting rod 301 is fixed at one end of the two sliders 306 away from each other, and the connecting rod 301 is movably extended to the outside of the horizontal driving box 3 and fixed to the second arc-shaped bracket 302. By rotating the bidirectional threaded rod 305, the two sliders 306 can be driven to move toward or away from each other, thereby driving the connecting rod 301 to move toward or away from each other.

[0050] Among them, a first bevel gear 307 is fixed at the middle position of the bidirectional threaded rod 305, a driving rod 308 is rotatably installed on the horizontal driving box 3, one end of the driving rod 308 extends into the horizontal driving box 3 and is fixed with a second bevel gear 310, the first bevel gear 307 is meshed with the second bevel gear 310, the bidirectional threaded rod is connected to the driving rod 308 through the first bevel gear 307 and the second bevel gear 310, the first spur gear 309 on the driving rod 308 is meshed with the synchronous gear 311, to realize the synchronous movement of the horizontal driving boxes on both sides.

[0051] Among them, the other end of the driving rod 308 extends to the outside of the horizontal driving box 3 and is fixed with a first spur gear 309, a synchronous gear 311 is provided between the two first spur gears 309, the first spur gear 309 is meshed with the synchronous gear 311, a second rotating motor 313 is fixed on the mixing liquid circulating coolant tank 1, a second spur gear 312 is fixed to the output end of the second rotating motor 313, the second spur gear 312 is meshed with the synchronous gear 311, and the second rotating motor 313 is meshed with the synchronous gear 311 through the second spur gear 312 to provide power for the entire driving system.

[0052] Among them, the cooling bends 201 on the two groups of arc-shaped cooling tube groups are provided with positioning mechanisms, and the positioning mechanisms include prism positioning pins 204 and prism positioning sleeves 205, which can ensure that the two groups of arc-shaped cooling tube groups are more stable when combined.

[0053] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0054] In the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0056] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A coagulation bath preparation system for use in a meta-aramid fiber spinning process, comprising a preparation liquid circulation cooling liquid tank (1), characterized in that: The mixing liquid circulating coolant tank (1) is provided with a condensing mechanism (2) on the outside of the mixing liquid circulating coolant tank (1), a circulating liquid inlet (101) is provided on the top of the mixing liquid circulating coolant tank (1), a circulating liquid outlet (102) is provided on the bottom of the mixing liquid circulating coolant tank (1), and an agitator (104) is provided inside the mixing liquid circulating coolant tank (1), and the agitator (104) is driven to rotate by a first rotating motor (105) on the top of the mixing liquid circulating coolant tank (1).

2. The coagulation bath liquid preparation system used in the meta-aramid fiber spinning section according to claim 1, characterized in that: The outer wall of the mixing liquid circulating coolant tank (1) is provided with a plurality of annular grooves (103), and the annular grooves (103) are evenly spaced from top to bottom. The condensing mechanism (2) comprises two pairs of arc-shaped cooling tube groups, and the two pairs of arc-shaped cooling tube groups are aligned and clamped on both sides of the mixing liquid circulating coolant tank (1). The arc-shaped cooling tube groups comprise a plurality of cooling bends (201), and the cooling bends (201) correspond one-to-one to the annular grooves (103).

3. The coagulation bath liquid preparation system used in the meta-aramid fiber spinning section according to claim 2, characterized in that: The cooling bend (201) at the top is connected to a coolant inlet and outlet pipe (208), one group of arc-shaped cooling tube groups is located on the cooling bend (201) at the bottom and is equipped with a first plug connector (206), and another group of arc-shaped cooling tube groups is located on the cooling bend (201) at the bottom and is equipped with a second plug connector (207), the first plug connector (206) is plugged and matched with the second plug connector (207), and the cooling bends (201) are connected in serpentine series at the head and tail via a series connection pipe (203).

4. The coagulation bath liquid preparation system used in the meta-aramid fiber spinning section according to claim 1, characterized in that: A plurality of stirring branches (106) are fixed on the stirrer (104), and the stirring branches (106) are evenly distributed from top to bottom on the stirrer (104).

5. The coagulation bath liquid preparation system used in the meta-aramid fiber spinning section according to claim 3, characterized in that: The relative positions of the cooling bends (201) in the arc-shaped cooling tube group are fixed by connecting strips (202), a first arc-shaped bracket (209) is fixed on the connecting strip (202), and an arc-shaped pressing plate (210) is fixed on the top of the first arc-shaped bracket (209).

6. The coagulation bath liquid preparation system used in the meta-aramid fiber spinning section according to claim 5, characterized in that: Two horizontal drive boxes (3) are fixed at the top and bottom of the mixing liquid circulating coolant tank (1), the horizontal drive box (3) is provided with two output ends, and the two output ends are fixed with a second arc-shaped bracket (302), an arc-shaped clamping piece (304) is provided below the second arc-shaped bracket (302), and a telescopic rod (303) is provided between the second arc-shaped bracket (302) and the arc-shaped clamping piece (304).

7. The coagulation bath liquid preparation system used in the meta-aramid fiber spinning section according to claim 6, characterized in that: The telescopic rod (303) has sliding damping, a clamping groove is formed at the bottom end of the arc-shaped clamping member (304), and one side of the arc-shaped pressing plate (210) extends into the clamping groove.

8. The coagulation bath liquid preparation system used in the meta-aramid fiber spinning section according to claim 6, characterized in that: A horizontally arranged bidirectional threaded rod (305) is rotatably mounted inside the horizontal driving box (3), two sliders (306) are mounted on the external threads of the bidirectional threaded rod (305), a connecting rod (301) is fixed to one end of the two sliders (306) that is away from each other, and the connecting rod (301) is movably extended to the outside of the horizontal driving box (3) and fixed to the second arc-shaped bracket (302).

9. The coagulation bath liquid preparation system used in the meta-aramid fiber spinning section according to claim 8, characterized in that: A first bevel gear (307) is fixed at the middle position of the bidirectional threaded rod (305), a driving rod (308) is rotatably mounted on the horizontal driving box (3), one end of the driving rod (308) extends into the horizontal driving box (3) and is fixed with a second bevel gear (310), and the first bevel gear (307) is meshed with the second bevel gear (310).

10. The coagulation bath liquid preparation system used in the meta-aramid fiber spinning section according to claim 9, characterized in that: The other end of the driving rod (308) extends to the outside of the horizontal driving box (3) and is fixed with a first spur gear (309), a synchronous gear (311) is provided between the two first spur gears (309), the first spur gear (309) is meshed with the synchronous gear (311), a second rotating motor (313) is fixed on the mixing liquid circulating cooling liquid tank (1), a second spur gear (312) is fixed at the output end of the second rotating motor (313), and the second spur gear (312) is meshed with the synchronous gear (311).

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