Heat exchange device for meta-position aramid fiber production

Abstract

The utility model discloses a heat exchange device for meta-position aramid fiber production, which comprises a blending liquid circulating cooling liquid tank, a condensation mechanism is arranged outside the blending liquid circulating cooling liquid tank, a circulating liquid inlet is arranged at the top end of the blending liquid circulating cooling liquid tank, and a circulating liquid outlet is arranged at the bottom end of the blending 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 the stirrer is driven by a first rotating motor at the top end of the blending liquid circulating cooling liquid tank to rotate; a plurality of annular grooves are formed in the outer wall of the blending liquid circulating cooling liquid tank and are distributed at equal intervals from top to bottom. According to the utility model, the operation convenience is improved, the cooling pipe group capable of being quickly connected and disassembled is designed, and the cooling pipe group is quickly assembled and disassembled through the combination of the arc-shaped pressing plate, the telescopic rod and the arc-shaped clamping piece. Therefore, not only is the maintenance process simplified, but also the downtime is shortened, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of meta-aramid fiber production, in particular to a heat exchange device for meta-aramid fiber production. Background Art

[0002] The spinning process includes metering and spinning, solidification molding, and plasticizing and stretching. In this process, an ethylene glycol aqueous solution is used for cooling (the temperature is controlled at about 10°C). In the solidification molding process, the spinning dope solidifies under the action of a coagulation bath (a mixture of DMAC and water) to form a tow.

[0003] When the spinning dope is extruded from the spinneret holes during the spinning and forming process, the solvent DMAC in the spinning dope diffuses into the coagulation bath and the coagulant water into the spinning dope, causing a phase change and transforming into nascent fibers. The coagulation bath is a mixture of DMAC and water, and the concentration of DMAC in the coagulation bath is about 60% or so, and the temperature is controlled at about 10°C. Since the solvent DMAC in the spinning dope diffuses into the coagulation bath and the coagulant water into the spinning dope, the concentration of DMAC in the coagulation bath will continuously increase. Therefore, a set of coagulation bath liquid preparation system is equipped with equipment such as a coagulation bath storage tank, a heat exchanger, a preparation tank, and a transfer pump. Pure water is continuously supplemented and circulated to ensure that the concentration and temperature of the coagulation bath remain stable for a long time. The device in the prior art has a complex structure, a large floor area, and generally adopts a jacket cooling method. Since it is an integral structure, it is not convenient to replace, maintain, and repair each component subsequently, and the use cost is relatively high. Summary of the Utility Model

[0004] In order to solve the problems mentioned in the above background art, the utility model provides a heat exchange device for meta-aramid fiber production.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A heat exchange device for meta-aramid fiber production includes a preparation liquid circulating coolant tank. The external of the preparation liquid circulating coolant tank is provided with a condensation mechanism. The top of the preparation liquid circulating coolant tank is provided with a circulating liquid inlet, and the bottom of the preparation liquid circulating coolant tank is provided with a circulating liquid outlet. A stirrer is installed inside the preparation liquid circulating coolant tank, and the stirrer is driven to rotate by a first rotating motor at the top of the preparation liquid circulating coolant tank.

[0007] A plurality of annular grooves are provided on the outer wall of the preparation liquid circulating coolant tank, and the annular grooves are equidistantly distributed from top to bottom. The condensation mechanism includes two pairs of arc-shaped cooling pipe groups, and the two pairs of arc-shaped cooling pipe groups are clamped on both sides of the liquid preparation circulating coolant tank in an aligned manner. The arc-shaped cooling pipe group includes a plurality of cooling elbows, and the cooling elbows correspond to the annular grooves one by one.

[0008] Preferably, a coolant inlet and outlet pipe is connected to the uppermost cooling elbow. A first socket is installed on the lowermost cooling elbow of one set of arc-shaped cooling pipe groups, and a second socket is installed on the lowermost cooling elbow of the other set of arc-shaped cooling pipe groups. The first socket and the second socket are in plug-in matching, and the cooling elbows are connected in a serpentine series through a series pipe between the head and the tail.

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

[0010] Preferably, the relative positions of the cooling elbows in the arc-shaped cooling pipe groups are fixed by connecting bars.

[0011] Preferably, a plurality of threaded sleeves are fixed on the outer wall of the dispensing liquid circulating coolant tank between adjacent annular grooves. Locking holes are provided at positions corresponding to the threaded sleeves on the connecting bar, and locking bolts are installed in the locking holes, and the locking bolts extend into the threaded sleeves.

[0012] Preferably, the connecting bar is vertically arranged, and there are a plurality of connecting bars, and the plurality of connecting bars are annularly and arrayedly distributed outside the dispensing liquid circulating coolant tank.

[0013] Preferably, a positioning mechanism is provided between the cooling elbows on the two sets of arc-shaped cooling pipe groups, and the positioning mechanism includes a prism positioning pin and a prism positioning sleeve.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. Enhance the cooling effect: An external condensation mechanism is adopted, including multiple pairs of arc-shaped cooling pipe groups, which are closely matched with the annular grooves on the outer wall of the dispensing liquid circulating coolant tank to form an efficient heat exchange system. The coolant circulates in the cooling elbows, effectively absorbing the heat in the tank, reducing the temperature of the coagulation bath solution, and meeting the strict requirements of the spinning process for temperature control.

[0016] 2. Improve the operation convenience: The cooling pipe group with quick connection and disassembly is designed. Through the combination of an arc-shaped pressing plate, a telescopic rod and an arc-shaped clamping member, the quick installation and disassembly of the cooling pipe group are realized. This not only simplifies the maintenance process, but also reduces the downtime and improves the production efficiency.

[0017] 3. Optimize the space layout and the structure is compact: The whole system has a compact structure, the layout of each component is reasonable, and the space is effectively utilized. At the same time, through the modular design, each component is easy to maintain and replace, reducing the long-term operation cost. Description of the Drawings

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 Isometric view of the present invention;

[0020] Figure 2 Is Figure 1 Enlarged detail view of position A in

[0021] Figure 3 Schematic structural view of the condensate removal mechanism of the dispensing liquid circulating coolant tank in the present invention;

[0022] Figure 4 Cross-sectional view of the dispensing liquid circulating coolant tank of the present invention;

[0023] Figure 5 Enlarged detail view of the first perspective of the condensate removal mechanism of the present invention;

[0024] Figure 6 Enlarged detail view of the second perspective of the condensate removal mechanism of the present invention;

[0025] Figure 7 Schematic view of the mating relationship between the cooling elbow and the series pipe of the present invention;

[0026] In the figure: 1 dispensing liquid circulating coolant tank, 101 circulating liquid inlet, 102 circulating liquid outlet, 103 annular groove, 104 stirrer, 105 first rotating motor, 106 stirring branch, 2 condensate removal mechanism, 201 cooling elbow, 202 connecting strip, 203 series pipe, 204 prism locating pin, 205 prism locating sleeve, 206 first socket joint, 207 second socket joint, 208 coolant inlet and outlet pipe, 3 locking bolt. Detailed implementation manners

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0028] Embodiment

[0029] Refer toFigure 1-7 , A heat exchange device for producing meta-aramid fiber, including a dispensing liquid circulating coolant tank 1. There is a condensing mechanism 2 installed outside the dispensing liquid circulating coolant tank 1. A circulating liquid inlet 101 is provided at the top of the dispensing liquid circulating coolant tank 1, and a circulating liquid outlet 102 is provided at the bottom of the dispensing liquid circulating coolant tank 1. A stirrer 104 is installed inside the dispensing liquid circulating coolant tank 1, and the stirrer 104 is driven to rotate by a first rotating motor 105 at the top of the dispensing liquid circulating coolant tank 1;

[0030] During the use of the coagulation bath liquid, its temperature will increase. The coagulation bath liquid is introduced into the dispensing liquid circulating coolant tank 1 from the circulating liquid inlet 101 through a circulating pump, and the coagulation bath liquid is circulated and cooled by the condensing mechanism 2.

[0031] A plurality of annular grooves 103 are provided on the outer wall of the dispensing liquid circulating coolant tank 1. The annular grooves 103 are equidistantly distributed from top to bottom. The condensing mechanism 2 includes two pairs of arc-shaped cooling tube groups. The two pairs of arc-shaped cooling tube groups are clamped on both sides of the dispensing liquid circulating coolant tank 1 in alignment. The arc-shaped cooling tube group includes a plurality of cooling elbows 201, and the cooling elbows 201 correspond to the annular grooves 103 one by one;

[0032] The plurality of cooling elbows 201 are in close fit with the annular grooves 103 on the outer wall of the dispensing liquid circulating coolant tank 1 to form an efficient heat exchange system. The coolant circulates in the cooling elbows 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.

[0033] Among them, a coolant inlet and outlet pipe 208 is connected to the cooling elbow 201 at the uppermost position. A first plug connector 206 is installed on the cooling elbow 201 at the lowermost position of one group of arc-shaped cooling tube groups, and a second plug connector 207 is installed on the cooling elbow 201 at the lowermost position of the other group of arc-shaped cooling tube groups. The first plug connector 206 and the second plug connector 207 are inserted and matched, and the heads and tails of the respective cooling elbows 201 are connected in series in a snake shape through a series pipe 203;

[0034] The first plug connector 206 and the second plug connector 207 are inserted and matched, enabling the two groups of arc-shaped cooling tube groups to be connected in series, and they can be conveniently combined and separated. After the coolant passes through one of the coolant inlet and outlet pipes 208, it then flows through each cooling elbow 201 in a snake shape in turn, and finally flows out from the other coolant inlet and outlet pipe 208. The coolant can exchange heat with the coagulation bath liquid more fully, improving the heat exchange effect.

[0035] Among them, a plurality of stirring branches 106 are fixed on the stirrer 104. The stirring branches 106 are equidistantly distributed from top to bottom on the stirrer 104 and can stir the coagulation bath solution, which can significantly improve the mixing efficiency and uniformity of the coagulation bath solution. This helps to ensure the stability of the composition of the coagulation bath solution during the spinning process, improve the quality of the fiber product, and can ensure the uniformity of the internal temperature of the coagulation bath solution, improving the cooling effect on the coagulation bath solution.

[0036] Among them, the relative positions of the cooling elbows 201 in the arc-shaped cooling pipe group are fixed by connecting bars 202. A plurality of threaded sleeves 107 are fixed on the outer wall of the dispensing liquid circulating coolant tank 1 between adjacent annular grooves 103. Locking holes are provided at positions corresponding to the threaded sleeves 107 on the connecting bar 202. Locking bolts 3 are installed in the locking holes, and the locking bolts 3 extend into the threaded sleeves 107. The connecting bar 202 is vertically arranged, and there are a plurality of connecting bars 202, which are annularly arrayed outside the dispensing liquid circulating coolant tank 1. The cooling elbows 201 can be tightly fixed on the outer wall of the dispensing liquid circulating coolant tank 1, improving the heat exchange effect and being convenient for disassembly and assembly.

[0037] Among them, a positioning mechanism is provided between the cooling elbows 201 on the two arc-shaped cooling pipe groups. The positioning mechanism includes a prism positioning pin 204 and a prism positioning sleeve 205. The prism positioning pin 204 can be inserted into the prism positioning sleeve 205 to improve the installation stability.

[0038] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] The control method of the present utility model is automatically controlled by a controller. The control circuit of the controller can be realized by simple programming of those skilled in the art. The provision of power supply also belongs to the common knowledge in this field. Moreover, the present utility model is mainly used to protect mechanical devices. Therefore, the control method and circuit connection of the present utility model will not be explained in detail herein.

[0041] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A heat exchange device for meta-aramid fiber production, comprising a mixing liquid circulating coolant 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); 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 to the annular grooves (103).

2. The heat exchange device for producing meta-aramid fiber according to claim 1, 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).

3. The heat exchange device for producing meta-aramid fiber 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).

4. The heat exchange device for producing meta-aramid fiber according to claim 3, characterized in that: The relative positions of the cooling elbows (201) in the arc-shaped cooling tube group are fixed by connecting strips (202).

5. The heat exchange device for producing meta-aramid fiber according to claim 3, characterized in that: A plurality of threaded sleeves (107) are fixed between adjacent annular grooves (103) on the outer wall of the mixing liquid circulating coolant tank (1), a locking hole is provided on the connecting strip (202) at a position corresponding to the threaded sleeve (107), a locking bolt (3) is installed in the locking hole, and the locking bolt (3) extends into the threaded sleeve (107).

6. A heat exchange device for producing meta-aramid fiber according to claim 5, characterized in that: The connecting strip (202) is arranged vertically, and a plurality of connecting strips (202) are provided, and the plurality of connecting strips (202) are distributed in a circular array outside the mixing liquid circulating coolant tank (1).

7. The heat exchange device for producing meta-aramid fiber according to claim 2, characterized in that: The cooling elbows (201) on the two groups of arc-shaped cooling tube groups are provided with positioning mechanisms between each other, and the positioning mechanisms include prism positioning pins (204) and prism positioning sleeves (205).

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