Dry-jet wet-spinning spinneret anti-condensation device

Abstract

The utility model discloses an anti-condensation device for a dry-jet wet-spinning spinneret. The anti-condensation device comprises a coagulating basin and a negative pressure absorption device, a mounting frame is mounted on the coagulating tank, and a spinning mechanism is mounted on the mounting frame; the negative pressure absorption device is installed on the installation frame and comprises a pair of absorption mechanisms, vacuum generators are arranged above the pair of absorption mechanisms, a control valve cavity is connected between the absorption mechanisms and the vacuum generators, an adjusting valve assembly is installed in the control valve cavity, and one sides of the pair of vacuum generators are connected with a compressed air pipe. An exhaust cavity is formed in the side, away from the compressed air pipe, of the vacuum generator, vacuum meters are installed on the pair of absorption mechanisms, a high-pressure spraying cavity and a suction cavity are formed in the vacuum generator, and a through hole is formed between the suction cavity and the exhaust cavity. According to the utility model, the vacuum negative pressure cavity device is additionally arranged around the spinning nozzle to absorb sulfoxide steam released by single-wire trickles on the surface of the spinning nozzle, so that the formation of moisture condensation is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of carbon fiber production technology, specifically relating to a device for preventing condensation in dry-jet and wet-jet spinning spinnerets. Background Technology

[0002] Dry-jet wet spinning is a solution spinning technology that combines the characteristics of dry spinning and wet spinning. It is widely used in the production of high-performance fibers, especially in the field of carbon fiber. This process involves extruding the spinning solution from the spinneret through an air layer (dry section) and then entering a coagulation bath for coagulation, thereby forming fibers.

[0003] The characteristic of dry-jet wet spinning is that the spinneret is outside the solidified liquid surface. The monofilament streams ejected from the spinneret plate pass through an air section before entering the solidified liquid. In the air section, the monofilament streams diffuse, and the dimethyl sulfoxide in the streams is released. Under the influence of temperature, some dimethyl sulfoxide vapor is released. The temperature around the spinneret is relatively low, resulting in heat exchange. As a result, condensation forms on the spinneret surface. If condensation occurs on the spinneret surface, the water droplets formed by the condensation will come into contact with the monofilament streams, causing filament breakage.

[0004] Therefore, in order to address the above-mentioned technical problems, it is necessary to provide a device for preventing condensation in dry-jet and wet-jet spinning spinnerets.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0006] The purpose of this invention is to provide a device for preventing condensation on dry-jet and wet-jet spinning spinnerets, which can solve the problem of condensation forming on the spinneret surface.

[0007] To achieve the above objectives, a specific embodiment of this utility model provides a device for preventing condensation in dry-jet and wet-spinning spinnerets, comprising: a coagulation tank and a negative pressure absorption device;

[0008] A mounting frame is installed on the solidification tank, a spinneret mechanism is installed on the mounting frame, and a first guide roller and a second guide roller are provided on the solidification tank.

[0009] The negative pressure absorption device is mounted on a mounting frame and includes a pair of absorption mechanisms, which are respectively located on both sides of the mounting frame. A vacuum generator is installed above each of the absorption mechanisms. A control valve chamber is connected between the absorption mechanism and the vacuum generator. An adjusting valve assembly is installed in the control valve chamber. A compressed air pipe is connected to one side of each of the vacuum generators. An exhaust chamber is located on the side of the vacuum generator away from the compressed air pipe. A vacuum gauge is installed on each of the absorption mechanisms. A high-pressure ejection chamber and an intake chamber are provided inside the vacuum generator. The high-pressure ejection chamber is connected to the compressed air pipe, and the intake chamber is connected to the control valve chamber. One end of the high-pressure ejection chamber is located in the intake chamber, and the radius of the end of the high-pressure ejection chamber located in the intake chamber gradually decreases. A through hole is provided between the intake chamber and the exhaust chamber, and the high-pressure ejection chamber is connected to the exhaust chamber.

[0010] In one or more embodiments of this utility model, both ends of the mounting bracket are fixed with connecting clamps, which are clamped on the side wall of the solidification tank. By clamping the connecting clamps onto the solidification tank, the mounting bracket is installed onto the solidification tank.

[0011] In one or more embodiments of this utility model, a feed hopper is provided above the spinneret mechanism and multiple spinnerets are provided at the bottom. Raw materials are added to the spinneret mechanism through the feed hopper and then the fibers are ejected through the spinnerets.

[0012] In one or more embodiments of this utility model, a pair of connecting members are fixed between the absorption mechanism and the mounting frame, and the absorption mechanism is fixed on the mounting frame by the connecting members.

[0013] In one or more embodiments of this utility model, the regulating valve assembly includes a control rod, one end of which is fixed with a stop plug inside the control valve cavity. The stop plug is moved up and down by the control rod to adjust the gas flow rate and control the negative pressure in the absorption mechanism.

[0014] In one or more embodiments of this utility model, a pair of fixing rings are fixed inside the absorption mechanism, and the control rod slides up and down on the pair of fixing rings. The fixing rings are used to install the control rod, and the control rod slides up and down along the fixing rings.

[0015] In one or more embodiments of this utility model, a turbine sleeve is installed between a pair of fixed rings, and the turbine sleeve is threadedly connected to the control rod. Rotating the turbine sleeve drives the control rod to move up and down.

[0016] In one or more embodiments of this utility model, a worm gear is installed inside the absorption mechanism, and the worm gear meshes with the turbine sleeve. By rotating the worm gear, the turbine sleeve is driven to rotate.

[0017] In one or more embodiments of this utility model, the worm gear is provided with a handle fixed outside the absorption mechanism, and the handle is used to drive the worm gear to rotate.

[0018] In one or more embodiments of this utility model, the control rod is provided with a slot, and a retaining bar that matches the slot is fixed on the fixing ring. The retaining bar slides in the slot, thereby restricting the control rod so that it can only slide up and down relative to the fixing ring and cannot rotate. After the control rod cannot rotate, the turbine sleeve can drive the control rod to move up and down after the turbine sleeve is rotated.

[0019] Compared with the prior art, this utility model adds a vacuum negative pressure chamber device around the spinneret to absorb the sulfoxide vapor released by the single filament stream on the spinneret surface, thus avoiding the formation of condensation. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a perspective view of an anti-condensation device for a dry-jet wet-spinning spinneret according to an embodiment of the present invention;

[0022] Figure 2 This is a perspective view of another aspect of a dry-jet wet-spinning spinneret anti-condensation device according to one embodiment of the present invention.

[0023] Figure 3 This is a schematic diagram of the mounting bracket in one embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the negative pressure absorption device in one embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the absorption mechanism in one embodiment of the present invention;

[0026] Figure 6 for Figure 5 The structural diagram shown at point A in the middle;

[0027] Figure 7 This is a schematic diagram of the absorption mechanism from another perspective in one embodiment of the present invention;

[0028] Figure 8 for Figure 7 The structural diagram shown at point B in the middle;

[0029] Figure 9 This is a three-dimensional cross-sectional view of a vacuum generator in one embodiment of the present invention.

[0030] Explanation of key figure labels:

[0031] 1-Coagulation tank, 101-First guide roller, 102-Second guide roller, 103-Mounting frame, 104-Connecting clamp, 105-Spinning mechanism, 106-Feed hopper, 107-Spinning head, 2-Negative pressure absorption device, 201-Absorption mechanism, 202-Connector, 203-Vacuum gauge, 204-Control valve chamber, 205-Vacuum generator, 206-Regulating valve assembly, 207-Fixing ring, 208-Turbine sleeve, 209-Control lever, 210-Flow stop plug, 211-Wheel shaft, 212-Handle, 213-Clamping strip, 214-Clamping strip groove, 215-High pressure ejection chamber, 216-Suction chamber, 217-Exhaust chamber, 218-Compressed air pipe. Detailed Implementation

[0032] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0033] like Figures 1 to 9 As shown, an embodiment of the present invention provides a device for preventing condensation in a dry-jet wet-spinning spinneret, comprising: a coagulation tank 1 and a negative pressure absorption device 2.

[0034] like Figures 1 to 3 As shown, a mounting frame 103 is installed on the coagulation tank 1, and a spinneret mechanism 105 is installed on the mounting frame 103. The mounting frame 103 is used to support the spinneret mechanism 105, which is used for spinning fibers. A first guide roller 101 and a second guide roller 102 are provided on the coagulation tank 1. The first guide roller 101 and the second guide roller 102 are used to assist the extruded fibers in being cooled in the coagulation tank 1. After being extruded from the spinneret mechanism 105, the fibers enter the coagulation tank 1 downwards, then pass around the bottom outer ring of the second guide roller 102, and then pass around the upper outer ring of the first guide roller 101, before being introduced into the next processing step.

[0035] like Figures 1 to 3As shown, both ends of the mounting frame 103 are fixed with connecting clamps 104. The connecting clamps 104 are clamped on the side wall of the solidification tank 1, thereby mounting the mounting frame 103 onto the solidification tank 1. A feed hopper 106 is provided above the spinneret mechanism 105, and multiple spinnerets 107 are provided at the bottom. Raw materials are added to the spinneret mechanism 105 through the feed hopper 106, and then the fibers are ejected through the spinnerets 107.

[0036] like Figures 4 to 9 As shown, the negative pressure absorption device 2 is mounted on the mounting frame 103. The negative pressure absorption device 2 includes a pair of absorption mechanisms 201, which are respectively located on both sides of the mounting frame 103. The absorption mechanisms 201 generate a vacuum negative pressure effect through the vacuum generator 205, and then draw away the sulfoxide vapor around the lower end of the spinneret 105 to prevent condensation from forming on the bottom surface of the spinneret 105, which could lead to filament breakage at the spinneret. A vacuum generator 205 is provided above each of the pair of absorption mechanisms 201. A control valve chamber 204 connects the absorption mechanism 201 and the vacuum generator 205. A regulating valve assembly 206 is installed in the control valve chamber 204. The control valve chamber 204 connects the absorption mechanism 201 and the vacuum generator 205. The vacuum generator 205 generates a vacuum negative pressure effect in the absorption mechanism 201. The regulating valve assembly 206 is used to adjust the gas flow rate, thereby controlling the magnitude of the vacuum negative pressure in the absorption mechanism 201.

[0037] like Figures 4 to 9 As shown, a pair of vacuum generators 205 are connected to a compressed air pipe 218 on one side. An exhaust chamber 217 is provided on the side of the vacuum generator 205 away from the compressed air pipe 218. A vacuum gauge 203 is installed on each of the pair of absorption mechanisms 201. The end of the compressed air pipe 218 away from the vacuum generator 205 is used to connect compressed air and transmit the compressed air to the vacuum generator 205, thereby generating a vacuum negative pressure effect in the vacuum generator 205. The exhaust chamber 217 is used to exhaust air, and the vacuum gauge 203 is used to monitor the magnitude of the vacuum negative pressure in the absorption mechanism 201.

[0038] like Figures 4 to 9As shown, the vacuum generator 205 is equipped with a high-pressure ejection chamber 215 and an intake chamber 216. The high-pressure ejection chamber 215 is connected to the compressed air pipe 218, and the intake chamber 216 is connected to the control valve chamber 204. One end of the high-pressure ejection chamber 215 is located in the intake chamber 216, and the radius of the end of the high-pressure ejection chamber 215 located in the intake chamber 216 gradually decreases. A through hole is provided between the intake chamber 216 and the exhaust chamber 217, and the high-pressure ejection chamber 215 is connected to the exhaust chamber 217. After the high-pressure ejection chamber 215 is connected to the compressed air, the compressed air is blown into the exhaust chamber 217 at high speed through the end of the high-pressure ejection chamber 215 located in the intake chamber 216. When the compressed air is blown into the exhaust chamber 217 at high speed from the high-pressure ejection chamber 215, it drives the gas in the intake chamber 216 to flow into the exhaust chamber 217, thereby creating a vacuum negative pressure effect in the intake chamber 216, which in turn drives the absorption mechanism 201 to generate a vacuum negative pressure effect.

[0039] like Figures 4 to 9 As shown, a pair of connecting members 202 are fixed between the absorption mechanism 201 and the mounting frame 103, thereby fixing the absorption mechanism 201 to the mounting frame 103. The regulating valve assembly 206 includes a control rod 209. One end of the control rod 209, located within the control valve chamber 204, is fixed with a stop plug 210. By moving the stop plug 210 up and down with the control rod 209, the gas flow rate is adjusted, thereby controlling the magnitude of the negative pressure within the absorption mechanism 201. A pair of fixing rings 207 are fixed within the absorption mechanism 201. The control rod 209 slides up and down on the pair of fixing rings 207. The fixing rings 207 are used to mount the control rod 209, and the control rod 209 slides up and down along the fixing rings 207.

[0040] like Figures 4 to 9 As shown, a turbine sleeve 208 is installed between a pair of fixed rings 207. The turbine sleeve 208 is threadedly connected to a control rod 209. Rotating the turbine sleeve 208 causes the control rod 209 to move up and down. A vortex rod 211 is installed inside the absorption mechanism 201. The vortex rod 211 meshes with the turbine sleeve 208. Rotating the vortex rod 211 causes the turbine sleeve 208 to rotate. A handle 212 is fixed to the outside of the absorption mechanism 201 on the vortex rod 211. The handle 212 is used to drive the vortex rod 211 to rotate.

[0041] like Figures 4 to 9 As shown, a slot 214 is cut into the control rod 209, and a retaining strip 213 that matches the slot 214 is fixed on the fixing ring 207. The retaining strip 213 slides in the slot 214, thereby restricting the control rod 209 so that the control rod 209 can only slide up and down relative to the fixing ring 207 and cannot rotate. After the control rod 209 cannot rotate, the turbine sleeve 208 can drive the control rod 209 to move up and down after rotating the turbine sleeve 208.

[0042] Working principle: When using this device, the compressed air pipe 218 needs to be connected to compressed air. In specific use, the raw material is first added to the spinneret 105 through the feed hopper 106. After the fiber is ejected from the spinneret 105, it enters the solidification tank 1 downward for cooling. Then the fiber passes around the bottom outer ring of the second guide roller 102, and then passes around the upper outer ring of the first guide roller 101, and then is introduced into the next processing step.

[0043] During equipment operation, compressed air is transmitted to the high-pressure ejection chamber 215 via the compressed air pipe 218. Then, the compressed air is blown into the exhaust chamber 217 at high speed through one end of the high-pressure ejection chamber 215 located in the suction chamber 216. When the compressed air is blown into the exhaust chamber 217 at high speed from the high-pressure ejection chamber 215, it drives the gas in the suction chamber 216 to flow into the exhaust chamber 217, thereby creating a vacuum negative pressure effect in the suction chamber 216. This, in turn, creates a vacuum negative pressure effect in the absorption mechanism 201. The absorption mechanism 201 draws away the sulfoxide vapor around the lower end of the spinneret mechanism 105, preventing condensation from forming on the bottom surface of the spinneret mechanism 105 and causing filament breakage at the spinneret plate.

[0044] During equipment operation, the vacuum pressure inside the absorption mechanism 201 can be observed through the vacuum gauge 203. Then, the gas flow rate and vacuum pressure can be adjusted through the regulating valve assembly 206. During the adjustment process, it is only necessary to turn the handle 212. The handle 212 drives the vortex rod 211 to rotate, and the vortex rod 211 drives the turbine sleeve 208 to rotate. The rotation of the turbine sleeve 208 drives the control rod 209 to move up and down, and the control rod 209 drives the stop plug 210 to move up and down, thereby adjusting the gas flow rate at the control valve chamber 204, and thus adjusting the negative pressure inside the absorption mechanism 201.

[0045] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0046] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for preventing condensation in a dry-jet / wet-spinning spinneret, characterized in that, include: A solidification tank, on which a mounting frame is installed, on which a spinning mechanism is installed, and on which a first guide roller and a second guide roller are provided; A negative pressure absorption device is mounted on a mounting frame. The negative pressure absorption device includes a pair of absorption mechanisms, which are respectively located on both sides of the mounting frame. A vacuum generator is installed above each of the absorption mechanisms. A control valve chamber is connected between the absorption mechanism and the vacuum generator. An adjusting valve assembly is installed in the control valve chamber. A compressed air pipe is connected to one side of each of the vacuum generators. An exhaust chamber is located on the side of the vacuum generator away from the compressed air pipe. A vacuum gauge is installed on each of the absorption mechanisms. A high-pressure ejection chamber and an intake chamber are provided inside the vacuum generator. The high-pressure ejection chamber is connected to the compressed air pipe, and the intake chamber is connected to the control valve chamber. One end of the high-pressure ejection chamber is located in the intake chamber, and the radius of the end of the high-pressure ejection chamber located in the intake chamber gradually decreases. A through hole is provided between the intake chamber and the exhaust chamber, and the high-pressure ejection chamber is connected to the exhaust chamber.

2. The anti-condensation device for dry-jet and wet-jet spinning spinnerets according to claim 1, characterized in that, Both ends of the mounting bracket are fixed with connecting clamps, which are clamped onto the side wall of the solidification tank.

3. The anti-condensation device for dry-jet and wet-jet spinning spinnerets according to claim 1, characterized in that, The spinning mechanism is equipped with a feed hopper at the top and multiple spinnerets at the bottom.

4. The anti-condensation device for dry-jet and wet-jet spinning spinnerets according to claim 1, characterized in that, A pair of connectors are fixed between the absorption mechanism and the mounting frame.

5. The anti-condensation device for dry-jet and wet-jet spinning spinnerets according to claim 1, characterized in that, The regulating valve assembly includes a control rod, and a stop plug is fixed to one end of the control rod located inside the control valve cavity.

6. The anti-condensation device for dry-jet and wet-jet spinning spinnerets according to claim 5, characterized in that, The absorption mechanism has a pair of fixed rings, and the control rod slides up and down on the pair of fixed rings.

7. The anti-condensation device for dry-jet and wet-jet spinning spinnerets according to claim 6, characterized in that, A turbine sleeve is installed between the pair of fixed rings, and the turbine sleeve is threadedly connected to the control rod.

8. The anti-condensation device for dry-jet and wet-jet spinning spinnerets according to claim 7, characterized in that, The absorption mechanism is equipped with a vortex rod, which meshes with the turbine sleeve.

9. A device for preventing condensation in a dry-jet / wet-spinning spinneret according to claim 8, characterized in that, The worm gear is fixed to the outside of the absorption mechanism with a handle.

10. A device for preventing condensation in a dry-jet wet-spinning spinneret according to claim 9, characterized in that, The control rod has a slot for a retaining strip, and a retaining strip that matches the slot is fixed on the fixing ring.

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