Spinning device capable of continuously switching formula, control method and automatic spinning equipment

Abstract

The invention discloses a spinning device capable of achieving continuous formula switching, a control method and automatic spinning equipment, and relates to the field of spinning equipment, the spinning device capable of achieving continuous formula switching comprises a polymerization liquid treatment unit and a spinning unit, and the polymerization liquid treatment unit comprises a first treatment assembly, a second treatment assembly and a cleaning assembly. The spinning unit comprises a spinning material collecting pipe, and the spinning material collecting pipe is connected with the first processing assembly and the second processing assembly.The spinning device capable of continuously switching the formulas can efficiently and continuously process spinning production of different formulas, uninterrupted operation is achieved, the test and production efficiency is greatly improved, and the production cost is reduced. And the requirements of modern chemical fiber wet spinning production are met.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of spinning equipment, in particular to a formula continuous switching spinning device, a control method and an automatic spinning equipment. BACKGROUND

[0002] At present, the wet spinning production of chemical fibers usually runs continuously for a single polymer formula. It is difficult to change the spinning solution formula without stopping the machine for a production line. When the spun polymer solution needs to be switched, the existing process generally adopts a shutdown process, that is, the spinning is stopped first, the residual polymer solution in the equipment and pipeline is emptied or cleaned by solvent replacement, and then the new polymer solution is introduced to restart the spinning. This process takes a long time and wastes a lot of materials. Shutdown cleaning not only reduces production efficiency, but also produces a large amount of waste liquid and waste silk. At the same time, the interruption and restart of the spinning process often leads to unstable spinning assembly temperature and hydraulic pressure, which needs to be debugged for a period of time to restore normal fiber quality, thereby affecting the smooth progress of production. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a formula continuous switching spinning device, which can efficiently and continuously process spinning production of different formulas, realize uninterrupted operation, greatly improve the test and production efficiency, and meet the needs of modern chemical fiber wet spinning production.

[0004] The formula continuous switching spinning device provided by the embodiment of the present application comprises: A polymer solution treatment unit comprising a first treatment assembly, a second treatment assembly and a cleaning assembly; The first treatment assembly comprises a first degassing kettle, a first connecting pipe, a first feeding pipe and a first discharge pipe, the first connecting pipe is connected to the first degassing kettle and is provided with a first two-way valve, and the first feeding pipe and the first discharge pipe are connected to the first connecting pipe through a first three-way valve; The second treatment assembly comprises a second degassing kettle, a second connecting pipe, a second feeding pipe and a second discharge pipe, the second connecting pipe is connected to the second degassing kettle and is provided with a second two-way valve, and the second feeding pipe and the second discharge pipe are connected to the second connecting pipe through a second three-way valve; The cleaning assembly is connected to the first degassing kettle and the second degassing kettle respectively, and is used for injecting cleaning liquid into the first degassing kettle and the second degassing kettle; and A spinning unit having a spinning collection pipe, the spinning collection pipe being connected to the first feeding pipe and the second feeding pipe through a third three-way valve.

[0005] The spinning device with continuous formula switching provided by the embodiment of the present application, the first processing assembly further comprises a first stirring mechanism, the first stirring mechanism comprises a first motor and a first stirring rod, the first motor is arranged in the first defoaming kettle and is drivingly connected to the first stirring rod, and the first stirring rod extends into the first defoaming kettle; The second processing assembly further comprises a second stirring mechanism, the second stirring mechanism comprises a second motor and a second stirring rod, the second motor is arranged in the second defoaming kettle and is drivingly connected to the second stirring rod, and the second stirring rod extends into the second defoaming kettle.

[0006] The spinning device with continuous formula switching provided by the embodiment of the present application, the polymerization liquid processing unit further comprises a first pressurizing assembly, the first pressurizing assembly is connected to the first defoaming kettle and the second defoaming kettle respectively, and is used for pressurizing the interiors of the first defoaming kettle and the second defoaming kettle.

[0007] The spinning device with continuous formula switching provided by the embodiment of the present application, the first processing assembly further comprises a first discharge valve, the first discharge valve is connected to the first discharge pipe; The second processing assembly further comprises a second discharge valve, the first discharge valve is connected to the second discharge pipe; And / or, the first discharge pipe and the second discharge pipe are both connected with waste liquid collecting members.

[0008] The spinning device with continuous formula switching provided by the embodiment of the present application, the polymerization liquid processing unit further comprises a polymerization assembly, the polymerization assembly comprises a polymerization kettle and two material conveying pipes, and the polymerization kettle is connected to the first defoaming kettle and the second defoaming kettle respectively through the two material conveying pipes.

[0009] The spinning device with continuous formula switching provided by the embodiment of the present application, the polymerization assembly further comprises a polymerization mechanism, the polymerization mechanism comprises a polymerization motor and a polymerization rod, the polymerization motor is arranged in the polymerization kettle and is drivingly connected to the polymerization rod, and the polymerization rod extends into the interior of the polymerization kettle; And / or, the polymerization liquid processing unit further comprises a second pressurizing assembly, the second pressurizing assembly is connected to the polymerization kettle and is used for pressurizing the interior of the polymerization kettle.

[0010] The embodiment of the present application further provides a control method, which is applied to the spinning device with continuous formula switching as described in the embodiment of the present application, the spinning device with continuous formula switching further comprises a controller used for controlling the polymerization liquid processing unit and the spinning unit, and the control method comprises the following steps: controlling the first two-way valve to open, and controlling the first three-way valve and the third three-way valve to act, so that the first connecting pipe, the first feeding pipe and the spinning collection pipe are communicated, and the polymer solution in the first defoaming kettle flows into the spinning unit through the first connecting pipe, the first feeding pipe and the spinning collection pipe; controlling the spinning unit to spin; controlling the second two-way valve to open, and controlling the second three-way valve to act, so that the second connecting pipe and the second discharge pipe are communicated, and the polymer solution in the second defoaming kettle flows into the second discharge pipe through the second connecting pipe, so as to discharge the air in the second connecting pipe; controlling the second three-way valve to act, so as to disconnect the second connecting pipe and the second discharge pipe, and make the second connecting pipe and the second feeding pipe communicated; controlling the third three-way valve to act, so as to disconnect the first feeding pipe and the spinning collection pipe, and make the second feeding pipe and the spinning collection pipe communicated, and the polymer solution in the second defoaming kettle flows into the spinning unit through the second connecting pipe, the second feeding pipe and the spinning collection pipe; controlling the first three-way valve to act, so as to disconnect the first connecting pipe and the first feeding pipe, and make the first connecting pipe and the first discharge pipe communicated, and controlling the first two-way valve to close and controlling the cleaning assembly to inject cleaning liquid into the first defoaming kettle to clean and generate waste liquid; controlling the first two-way valve to open, so that the waste liquid in the second defoaming kettle can flow out through the first connecting pipe and the first discharge pipe.

[0011] According to the control method provided by the embodiment of the present application, the step of controlling the first three-way valve to act, so as to disconnect the first connecting pipe and the first feeding pipe, and make the first connecting pipe and the first discharge pipe communicated, and controlling the first two-way valve to close and controlling the cleaning assembly to inject cleaning liquid into the first defoaming kettle to clean and generate waste liquid is: controlling the first three-way valve to act, so as to disconnect the first connecting pipe and the first feeding pipe, and make the first connecting pipe and the first discharge pipe communicated after a preset time t; controlling the first two-way valve to close and controlling the cleaning assembly to inject cleaning liquid into the first defoaming kettle to clean and generate waste liquid.

[0012] The embodiment of the present application also provides an automatic spinning device, which comprises the spinning device with continuous formula switching provided by the embodiment of the present application.

[0013] According to an embodiment of the present invention, the automated spinning equipment with continuously switching formulation includes two polymerization liquid treatment units, and the first and second feed pipes of each polymerization liquid treatment unit are connected to the spinning collection pipe through a third three-way valve.

[0014] The spinning apparatus for continuous formulation switching provided by the embodiments of the present invention has at least the following beneficial effects: When it is necessary to switch the polymerization liquid formulation, for example, from formulation A to formulation B, formulation B can be added to the second deaerator. A pre-extrusion operation is performed before switching to expel air bubbles from the second connecting pipe, preventing air bubbles from affecting the smoothness of the switching. When the spinning of the automated spinning equipment in the first deaerator is nearing completion, the spinning collection pipe is connected to the second feed pipe of the second deaerator by operating the third three-way valve. At this time, the second processing component supplies material to the spinning unit, thereby realizing the material supply switching. The entire switching process ensures a continuous supply of polymerization liquid and stable hydraulic pressure, achieving non-stop spinning switching. The pre-extrusion operation eliminates air bubbles in the pipeline, keeping the fiber traction speed and tension constant, effectively preventing fiber breakage.

[0015] Furthermore, during switching, fibers spun in the mixing zones of the two formulations at the moment of switching can be collected separately to distinguish the products. After the first deaerator completes its feeding task, the first three-way valve is activated to disconnect the first connecting pipe from the first feeding pipe, connecting the first connecting pipe to the first discharge pipe. At this time, the residual polymerization liquid in the first connecting pipe and the first deaerator can be discharged through the first discharge pipe. Then, the first two-way valve is closed, and cleaning liquid is injected into the first deaerator through the cleaning assembly to flush the vessel wall and generate waste liquid. Subsequently, the first two-way valve is opened, and the waste liquid is discharged through the first connecting pipe and the first discharge pipe. The entire cleaning process is convenient and quick, saving time. The cleaned first deaerator can then be used to feed in a new formulation to begin the next round of deaerator preparation. Through this collaborative mechanism, this device can efficiently and continuously process spinning production of different formulations, achieving uninterrupted operation and significantly improving experimental and production efficiency.

[0016] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 A connection diagram of a spinning apparatus for continuous formula switching provided for an embodiment of the present invention; Figure 2 A connection diagram of a spinning apparatus for continuous formula switching provided in another embodiment of the present invention; Figure 3This is a schematic diagram of the structure of a polymerization liquid treatment unit provided in an embodiment of the present invention.

[0018] The attached icons are numbered as follows: 100. Polymerization liquid treatment unit; 110. First processing component; 111. First degassing kettle; 112. First connecting pipe; 113. First feed pipe; 114. First discharge pipe; 115. First two-way valve; 116. First three-way valve; 117. First stirring mechanism; 118. First discharge valve; 120. Second processing component; 121. Second degassing kettle; 122. Second connecting pipe; 123. Second feed pipe; 124. Second discharge pipe; 125. Second two-way valve; 126. Second three-way valve; 127. Second stirring mechanism; 128. Second discharge valve; 130. Polymerization component; 131. Polymerization kettle; 132. Polymerization mechanism; 133. Conveying pipe; 200, spinning unit; 210, spinning feed tube; 220, third three-way valve. Detailed Implementation

[0019] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0020] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0021] In the description of this invention, the use of "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0022] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0023] Currently, wet spinning production of chemical fibers typically operates continuously with a single polymer formulation. It's difficult to change the spinning solution formulation on a production line without shutting down. When a change in the polymer solution is needed, existing processes generally involve stopping the spinning process. This involves halting spinning, draining or cleaning the equipment and pipelines of residual polymer solution, then introducing a new polymer solution and restarting spinning. This process is time-consuming and wasteful of materials. Stopping for cleaning not only reduces production efficiency but also generates large amounts of waste liquid and waste fiber. Furthermore, interruptions and restarts in the spinning process often lead to instability in the temperature and hydraulic pressure of the spinning components, requiring a period of adjustment to restore normal fiber quality, thus affecting smooth production.

[0024] To address the aforementioned problems, embodiments of the present invention propose a spinning device with continuous formula switching, applicable to automated spinning equipment. The specific structure and function of the spinning device with continuous formula switching provided by the embodiments of the present invention will be described below with reference to text and accompanying drawings.

[0025] Reference Figures 1 to 3 According to an embodiment of the present invention, a spinning apparatus for continuous formula switching includes a polymerization liquid treatment unit 100 and a spinning unit 200. The polymerization liquid treatment unit 100 includes a first treatment component 110, a second treatment component 120, a degassing component, and a cleaning component. The first treatment component 110 includes a first degassing vessel 111, a first connecting pipe 112, a first feed pipe 113, and a first discharge pipe 114. The first connecting pipe 112 is connected to the first degassing vessel 111, and a first two-way valve 115 is provided on the first connecting pipe 112 for controlling the opening and closing of the first connecting pipe 112. The first feed pipe 113 and the first discharge pipe 114 are connected to the first connecting pipe 112 through a first three-way valve 116. By operating the first three-way valve 116, the communication state between the first feed pipe 113, the first discharge pipe 114, and the first connecting pipe 112 can be changed.

[0026] The structure of the second processing component 120 is similar to that of the first processing component 110, including a second degassing vessel 121, a second connecting pipe 122, a second feeding pipe 123, and a second discharging pipe 124. The second connecting pipe 122 is connected to the second degassing vessel 121 and is equipped with a second two-way valve 125 to control the opening and closing of the second connecting pipe 122. The second feeding pipe 123 and the second discharging pipe 124 are connected to the second connecting pipe 122 through a second three-way valve 126. By operating the second three-way valve 126, the connection state of the second feeding pipe 123, the second discharging pipe 124, and the second connecting pipe 122 can be changed.

[0027] The degassing assembly includes a negative pressure pump, which is connected to the first degassing vessel 111 and the second degassing vessel 121 via pipelines. Its function is to degas the polymer solution added to the degassing vessel, remove air bubbles from the polymer solution, and ensure the quality of the polymer solution.

[0028] The cleaning assembly includes a liquid pump, which is connected to the first deaeration vessel 111 and the second deaeration vessel 121 via pipes, respectively, to inject cleaning liquid into the first deaeration vessel 111 and the second deaeration vessel 121 to clean the vessel walls and residual polymer liquid.

[0029] The spinning unit 200 has a spinning collection pipe 210, which is connected to a first feed pipe 113 and a second feed pipe 123 via a third three-way valve 220. By operating the third three-way valve 220, the connection state between the spinning collection pipe 210 and the first feed pipe 113 and the second feed pipe 123 can be changed, thereby enabling the supply of polymerization liquids with different formulations to the spinning unit 200.

[0030] In actual production, it is assumed that in the initial state, the first deaerator 111 supplies the polymerization solution of formulation A to the spinning unit 200. When it is necessary to switch to formulation B, formulation B is first added to the second deaerator 121, and then the deaerator assembly is started to deaerate formulation B.

[0031] After degassing of Formulation B, a pre-extrusion operation is performed. The second two-way valve 125 is opened, and the second three-way valve 126 is switched to the state leading to the second discharge pipe 124, connecting the inner cavity of the second degassing vessel 121 with the second connecting pipe 122 and the second discharge pipe 124. At this time, the polymerization liquid of Formulation B in the second degassing vessel 121 flows into the second connecting pipe 122 and the second discharge pipe 124, squeezing out the air bubbles in the second connecting pipe 122 and ensuring no air bubbles remain in the pipeline, thus preparing for a smooth transition later.

[0032] After pre-extrusion is completed, the second three-way valve 126 is operated to connect the second connecting pipe 122 and the second feeding pipe 123, while the second two-way valve 125 is kept open to maintain the connection between the second connecting pipe 122 and the second feeding pipe 123. At this time, the second degassing kettle 121 is ready to feed material to the spinning unit 200.

[0033] When the spinning of formula A in the first deaeration vessel 111 is nearing completion, the third three-way valve 220 is operated to switch from the originally connected first feed pipe 113 to the second feed pipe 123, connecting the spinning collection pipe 210 to the second feed pipe 123 of the second deaeration vessel 121. At this time, the second processing component 120 supplies material to the spinning unit 200 independently, thereby realizing the material supply switch. During the entire switching process, because the pre-extrusion operation eliminates air bubbles in the pipeline, the polymer liquid flow can be continuously and stably supplied, the fiber traction speed and tension are constant, and fiber breakage is effectively prevented.

[0034] After the switch is completed, a special collection device can be set up to collect the fibers spun in the mixing zone of the two formulas at the moment of the switch so as to distinguish the products.

[0035] After the first degassing vessel 111 completes the feeding of formula A, the first three-way valve 116 is activated to disconnect the first connecting pipe 112 from the first feeding pipe 113, connecting the first connecting pipe 112 to the first discharge pipe 114. At this time, the residual polymer liquid in the first connecting pipe 112 and the first degassing vessel 111 can be discharged through the first discharge pipe 114. Then, the first two-way valve 115 is closed, the cleaning assembly is started, and cleaning liquid is injected into the first degassing vessel 111 to flush the vessel wall and generate waste liquid. Subsequently, the first two-way valve 115 is opened to connect the first connecting pipe 112 to the first discharge pipe 114, and the waste liquid is discharged. The entire cleaning process is automatically completed by a pre-set program without manual intervention. After cleaning, the first degassing vessel 111 can be fed with a new formula to begin the next round of degassing preparation.

[0036] Through the alternating operation of the first degassing vessel 111 and the second degassing vessel 121, the seamless switching of feeding, and the coordinated mechanism of automatic cleaning and circulation, this device can efficiently and continuously process spinning production of different formulations, achieve uninterrupted operation, greatly improve the efficiency of testing and production, and meet the needs of modern chemical fiber wet spinning production.

[0037] It should be noted that before switching the feed, the polymerization liquid in the first degassing tank 111 and the second degassing tank 121 must be fully degassed in order to avoid fiber breakage caused by the bubbles in the polymerization liquid.

[0038] Optionally, both the polymerization liquid treatment unit 100 and the spinning unit 200 are controlled by a controller. The controller can automatically control the start and stop of each component and the opening and closing of each valve, thereby enabling functions such as automated switching and automated cleaning.

[0039] Optionally, the first three-way valve 116, the second two-way valve 125, and the third three-way valve 220 are all three-way two-way valves.

[0040] Reference Figures 1 to 3 According to the spinning apparatus for continuous formula switching provided in the embodiments of the present invention, the first processing component 110 is provided with a first stirring mechanism 117. The first stirring mechanism 117 includes a first motor and a first stirring rod. Specifically, the first motor is mounted on the first degassing vessel 111 by fasteners, and its output shaft is driven by the first stirring rod. The first stirring rod extends into the internal space of the first degassing vessel 111. When the first motor is started, it drives the first stirring rod to rotate, thereby fully stirring the polymerization liquid in the first degassing vessel 111, ensuring that the polymerization liquid can be uniformly mixed during the degassing process and improving the degassing efficiency.

[0041] Similarly, the second processing unit 120 is also equipped with a second stirring mechanism 127. A second motor is mounted on the second degassing vessel 121, and its output shaft is connected to the second stirring rod to achieve a driving function. The second stirring rod extends into the interior of the second degassing vessel 121. Under the action of the second motor, the second stirring rod rotates, stirring the polymerization liquid inside the second degassing vessel 121. This ensures that the polymerization liquid inside the second degassing vessel 121 is uniformly mixed, further guaranteeing the stability and reliability of the spinning device during continuous switching of polymerization liquids.

[0042] It should be noted that during the cleaning process, after the cleaning components inject the cleaning solution into the first degassing vessel 111 and the second degassing vessel 121, the first stirring mechanism 117 and the second stirring mechanism 127 are operated. The first stirring rod and the second stirring rod agitate the cleaning solution so that the cleaning solution washes the vessel wall and residual polymer solution, which helps to improve the cleaning effect.

[0043] Reference Figures 1 to 3 According to the spinning apparatus with continuous formula switching provided in the embodiments of the present invention, the polymerization liquid treatment unit 100 further includes a first pressurizing component, which is connected to the internal spaces of two degassing kettles via pipes or other means. During the feeding stage, the first pressurizing component is activated, applying pressure to the inside of the first degassing kettle 111 or the second degassing kettle 121. Due to the increased pressure inside the kettle, the polymerization liquid, under pressure, can be more smoothly and quickly extruded and transported to the spinning unit 200 through the connected pipes and conveying pipes 133, effectively ensuring the timeliness and stability of the feeding, avoiding feeding interruptions or delays caused by poor flow of the polymerization liquid, thereby improving the efficiency of the entire spinning process. During the cleaning stage, when the first deaeration vessel 111 or the second deaeration vessel 121 needs to be cleaned, the first pressurizing component pressurizes the vessel, so that the waste liquid generated during the cleaning process can be quickly discharged from the first deaeration vessel 111 or the second deaeration vessel 121 under pressure, which greatly shortens the waste liquid discharge time, reduces the total cleaning time, further improves the cleaning efficiency, and thus improves the production efficiency and operational stability of the entire spinning device.

[0044] Reference Figure 1 and Figure 2According to the spinning apparatus for continuous formula switching provided in the embodiments of the present invention, the first processing component 110 further includes a first discharge valve 118, which is tightly connected to the first discharge pipe 114. In actual operation, by controlling the opening and closing state of the first discharge valve 118, the on / off state of the first discharge pipe 114 can be precisely controlled. When the first discharge valve 118 is in the closed state, a sealed space is formed inside the first discharge pipe 114, which can effectively prevent the polymer liquid from leaking and external impurities from entering, thereby ensuring the good sealing performance of the first discharge pipe 114. During the pre-extrusion operation of the spinning device, the first discharge valve 118 is opened during the extrusion process, allowing the polymer liquid in the first degassing vessel 111 to flow into the first connecting pipe 112 and the first discharge pipe 114, squeezing out the air bubbles in the first connecting pipe 112. After the pre-extrusion operation is completed, the first discharge valve 118 is closed, thereby ensuring that the first discharge pipe 114 maintains good sealing performance, which can prevent the pre-extrusion effect from being affected by polymer liquid leakage or external interference, thus ensuring that the entire spinning device can operate stably and efficiently in the pre-extrusion stage and achieve good usage results.

[0045] Optionally, during the cleaning process, the first discharge valve 118 is opened, allowing waste liquid to be discharged through the first connecting pipe 112. After the waste liquid is discharged, the first discharge valve 118 is closed, effectively preventing external impurities from entering the first connecting pipe 112.

[0046] Reference Figure 1 and Figure 2 According to the spinning apparatus with continuously switching formulations provided in the embodiments of the present invention, the second processing component 120 further includes a second discharge valve 128, and a first discharge valve 118 is connected to the second discharge pipe 124. In actual operation, by controlling the opening and closing state of the second discharge valve 128, the on / off state of the second discharge pipe 124 can be precisely controlled. When the second discharge valve 128 is closed, a sealed space is formed inside the second discharge pipe 124, effectively preventing leakage of the polymerization liquid and the entry of external impurities, thereby ensuring good sealing performance of the second discharge pipe 124. During the pre-extrusion operation of the spinning apparatus, during the extrusion process, the second discharge valve 128 is opened, allowing the polymerization liquid in the second degassing vessel 121 to flow into the second connecting pipe 122 and the second discharge pipe 124, squeezing out the air bubbles in the second connecting pipe 122; after the pre-extrusion operation is completed, the second discharge valve 128 is closed, thereby maintaining good sealing performance of the second discharge pipe 124, preventing the pre-extrusion effect from being affected by polymer leakage or external interference, and thus ensuring that the entire spinning apparatus can operate stably and efficiently during the pre-extrusion stage, achieving good performance.

[0047] Optionally, during the cleaning process, the second discharge valve 128 is opened, allowing the waste liquid to be discharged through the second connecting pipe 122. After the waste liquid is discharged, the second discharge valve 128 is closed, effectively preventing external impurities from entering the second connecting pipe 122.

[0048] Reference Figure 1 and Figure 2 According to the spinning apparatus for continuous formula switching provided in this embodiment of the invention, both the first discharge pipe 114 and the second discharge pipe 124 are connected to waste liquid collection devices. Specifically, the waste liquid collection device can be a sealed container with sufficient volume. The container material has good corrosion resistance to cope with various chemical components that may be contained in the polymerization liquid and its waste liquid, preventing waste liquid leakage due to corrosion and damage to the environment and equipment. During installation, the ends of the first discharge pipe 114 and the second discharge pipe 124 are respectively connected tightly to the inlet of the waste liquid collection device through suitable connection interfaces to ensure good sealing at the connection and prevent leakage of waste liquid during discharge. When the spinning apparatus performs polymerization liquid switching operation, the waste liquid discharged from the first discharge pipe 114 and the second discharge pipe 124 will flow smoothly into the waste liquid collection device along the pipes. As waste liquid accumulates, the waste liquid collection device can safely and stably store this waste liquid. Once a certain amount is reached, the waste liquid in the collection device can be transferred to a special treatment site for further treatment, thereby achieving proper management of waste liquid, ensuring the normal operation of the spinning device and the safety of the surrounding environment.

[0049] Reference Figure 2 and Figure 3According to the continuously switching spinning apparatus provided in this embodiment of the invention, the polymerization liquid treatment unit 100 further includes a polymerization component 130, which includes a polymerization reactor 131. The polymerization reactor 131 is made of a material with good heat resistance and chemical corrosion resistance, such as stainless steel, to ensure that it can withstand the erosion of various chemical substances during the polymerization reaction and ensure the stable progress of the polymerization reaction. The polymerization reactor 131 is connected to the first degassing reactor 111 and the second degassing reactor 121 respectively through a conveying pipe 133. The conveying pipe 133 is selected with a smooth inner wall and corrosion resistance to reduce the resistance of the polymerization liquid during the transportation process and to prevent the polymerization liquid from remaining in the pipe or undergoing a chemical reaction. In the actual production process, the polymerization reaction is carried out in the polymerization reactor 131 according to the predetermined formula and process conditions to form a polymerization liquid that meets the requirements. Once the polymerization reaction is complete and the polymer solution meets the required quality standards for production, the operator can, based on current production needs, such as the usage of the polymer solution in the first degassing vessel 111 or the second degassing vessel 121, and the arrangement of subsequent spinning processes, control the valves (such as solenoid valves or manual ball valves) on the conveying pipe 133 to open the corresponding passages. This allows the polymer solution in the polymerization vessel 131 to be directly and quickly transferred to the first degassing vessel 111 or the second degassing vessel 121 via the conveying pipe 133. This avoids the complex transfer process of the polymer solution between different containers, reduces potential contamination and loss from intermediate steps, greatly improves the transfer efficiency of the polymer solution from preparation to subsequent processing, and thus enhances the overall production efficiency of the spinning unit.

[0050] Reference Figure 2 and Figure 3According to the continuously switching spinning apparatus provided in this embodiment of the invention, the polymerization component 130 further includes a polymerization mechanism 132. The polymerization mechanism 132 includes a polymerization motor and a polymerization rod. The polymerization motor is securely installed at a suitable position, such as the top or side of the polymerization reactor 131, by means of bolts or other fixing methods, ensuring that it will not shake or shift during operation. A drive connection is established between the polymerization motor and the polymerization rod, for example, by tightly connecting the output shaft of the polymerization motor to one end of the polymerization rod via a coupling, so that the polymerization motor can effectively transmit its rotational power to the polymerization rod. The polymerization rod extends from the connection point with the polymerization motor into the interior of the polymerization reactor 131, and its length is rationally designed according to the depth of the polymerization reactor 131 to ensure that the material in all positions within the polymerization reactor 131 can be fully stirred. During the polymerization process, the polymerization motor is started, and the polymerization motor drives the polymerization rod to rotate. The stirring blades on the polymerization rod or the polymerization rod itself will fully stir the reactants in the polymerization reactor 131, enabling the materials to be mixed uniformly, accelerating the contact and reaction rate between reactant molecules, thereby promoting the smooth progress of the polymerization reaction, improving polymerization efficiency and the quality of the polymerization liquid. When cleaning the polymerization reactor 131, the polymerization motor is also started. The rotation of the polymerization rod can stir the cleaning liquid in the polymerization reactor 131, so that the cleaning liquid can come into more comprehensive and thorough contact with the inner wall of the polymerization reactor 131 and the residual materials inside, enhancing the cleaning effect and effectively removing the residual impurities and unreacted materials in the polymerization reactor 131, providing a clean and good reaction environment for the next polymerization reaction.

[0051] Reference Figure 2 and Figure 3According to the spinning apparatus for continuous formulation switching provided in this embodiment of the invention, the polymerization liquid treatment unit 100 further includes a second pressurizing component. The second pressurizing component is connected to the polymerization reactor 131 via a pipeline. This pipeline is made of a high-strength, pressure-resistant material, such as stainless steel, and the connection points employ a sealing method with good sealing performance, such as flange connection with a sealing gasket, to ensure that no leakage occurs during pressurization. The second pressurizing component can be a common gas pressurizing pump. When it is necessary to quickly transfer the polymerization liquid in the polymerization reactor 131 to the first degassing reactor 111 or the second degassing reactor 121, the second pressurizing component is activated. Taking a gas pressurizing pump as an example, the gas pressurizing pump starts working, delivering inert gas to the inside of the polymerization reactor 131 through the pipeline. As the compressed gas is continuously injected, the pressure inside the polymerization reactor 131 gradually increases. When the pressure inside the reactor reaches a certain level, under the action of the pressure difference, the polymerization liquid in the polymerization reactor 131 will quickly flow to the first degassing reactor 111 or the second degassing reactor 121 through the feed pipe 133. Because the second pressurizing component provides additional pressure, the flow rate of the polymer liquid is greatly accelerated. Compared with relying solely on gravity or ordinary conveying methods, the transfer time of the polymer liquid can be significantly shortened, improving the production efficiency of the entire spinning unit and ensuring that the polymer liquid can reach the subsequent processing stage in a timely and accurate manner, meeting the needs of continuous production.

[0052] Optionally, the polymerization liquid treatment unit 100 can also pressurize the first degassing vessel 111, the second degassing vessel 121 and the polymerization vessel 131 simultaneously through the same set of pressurizing components. During the pressurization process, the pressurizing components inject inert gas into the first degassing vessel 111, the second degassing vessel 121 or the polymerization vessel 131, thereby expelling the polymer liquid inside.

[0053] The present invention also proposes a control method applied to a spinning apparatus with continuously changing formulations as described in the embodiments of the present invention. The spinning apparatus with continuously changing formulations further includes a controller for controlling the polymerization liquid treatment unit 100 and the spinning unit 200. The control method includes: S100: Control the opening of the first two-way valve 115 and control the operation of the first three-way valve 116 and the third three-way valve 220 to connect the first connecting pipe 112, the first feeding pipe 113 and the spinning collection pipe 210, so that the polymerization liquid in the first degassing kettle 111 flows into the spinning unit 200 through the first connecting pipe 112, the first feeding pipe 113 and the spinning collection pipe 210; S200: Controls the spinning unit 200 to perform spinning; Understandably, in the actual production process, in the initial state, the first degassing vessel 111 supplies the polymerization liquid of formula A to the spinning unit 200, and the spinning unit 200 spins according to formula A.

[0054] S300: Control the second two-way valve 125 to open and control the second three-way valve 126 to operate, so that the second connecting pipe 122 and the second discharge pipe 124 are connected. The polymer liquid in the second degassing tank 121 flows into the second discharge pipe 124 through the second connecting pipe 122 to discharge the air in the second connecting pipe 122. Control the second three-way valve 126 to operate, so as to disconnect the connection between the second connecting pipe 122 and the second discharge pipe 124, so that the second connecting pipe 122 and the second feed pipe 123 are connected.

[0055] Understandably, when the polymerization liquid in the first degassing tank 111 decreases and it is necessary to switch to formulation B, formulation B is first added to the second degassing tank 121, and then the degassing component is started to degas formulation B.

[0056] After degassing of formulation B, a pre-extrusion operation is performed. The second two-way valve 125 is opened, and the second three-way valve 126 is switched to the state leading to the second discharge pipe 124, connecting the inner cavity of the second degassing vessel 121 to the second connecting pipe 122 and the second discharge pipe 124. At this time, the polymerization liquid of formulation B in the second degassing vessel 121 flows into the second connecting pipe 122 and the second discharge pipe 124, squeezing out the air bubbles in the second connecting pipe 122 and ensuring no air bubbles remain in the pipeline, preparing for a smooth transition later. After pre-extrusion is completed, the second three-way valve 126 is operated to connect the second connecting pipe 122 and the second feed pipe 123, while keeping the second two-way valve 125 open to maintain the connection between the second connecting pipe 122 and the second feed pipe 123. At this point, the second degassing vessel 121 is ready to feed material to the spinning unit 200.

[0057] S400: Control the third three-way valve 220 to disconnect the connection between the first feed pipe 113 and the spinning collection pipe 210, so that the second feed pipe 123 and the spinning collection pipe 210 are connected, and the polymerization liquid in the second degassing kettle 121 flows into the spinning unit 200 through the second connecting pipe 122, the second feed pipe 123 and the spinning collection pipe 210; Understandably, when the spinning of formulation A in the first deaeration vessel 111 is nearing completion, or when it is necessary to switch the spinning formulation, the controller controls the third three-way valve 220 to switch from the originally connected first feed pipe 113 to the second feed pipe 123, thereby disconnecting the connection between the first feed pipe 113 and the spinning collection pipe 210, so that the spinning collection pipe 210 is connected to the second feed pipe 123 of the second deaeration vessel 121. At this time, the second processing component 120 supplies material to the spinning unit 200, thereby realizing the material supply switch. During the entire switching process, since the pre-extrusion operation eliminates air bubbles in the pipeline, the polymer liquid flow can be continuously and stably supplied, the hydraulic pressure is also kept stable, and the fiber traction speed and tension are constant, effectively preventing fiber breakage.

[0058] It should be noted that during the switching process, a special collection device can be set up to collect the fibers spun in the mixing zone of the two formulas at the moment of switching, so as to distinguish the products.

[0059] It should be noted that a liquid level sensor can be installed in both the first degassing vessel 111 and the second degassing vessel 121. The liquid level sensor is electrically connected to the controller. The liquid level sensor can detect the liquid level information of the polymerization liquid in the first degassing vessel 111 and the second degassing vessel 121 and feed the liquid level information back to the controller so that the controller can control the switching.

[0060] S500: Control the first three-way valve 116 to disconnect the connection between the first connecting pipe 112 and the first feeding pipe 113, so that the first connecting pipe 112 is connected to the first discharge pipe 114, and control the first two-way valve 115 to close and control the cleaning assembly to inject the cleaning liquid into the first defoaming kettle 111 for cleaning and generate waste liquid. Understandably, after the first degassing vessel 111 completes the feeding task of formula A, the first three-way valve 116 is activated to disconnect the connection between the first connecting pipe 112 and the first feeding pipe 113, connecting the first connecting pipe 112 to the first discharge pipe 114. At this time, the polymer liquid remaining in the first connecting pipe 112 and the first degassing vessel 111 can be discharged through the first discharge pipe 114. Then, the first two-way valve 115 is closed, the cleaning assembly is started, and cleaning liquid is injected into the first degassing vessel 111 to flush the vessel wall and generate waste liquid.

[0061] S600: Control the opening of the first two-way valve 115 so that the first connecting pipe 112 and the first discharge pipe 114 are connected, and the waste liquid in the second degassing vessel 121 can flow out through the first connecting pipe 112 and the first discharge pipe 114.

[0062] Understandably, after cleaning, the first two-way valve 115 is opened to connect the first connecting pipe 112 and the first discharge pipe 114, discharging the waste liquid. The entire cleaning process is automatically completed by a pre-set program, requiring no manual intervention. After cleaning, the first degassing vessel 111 can be used to add a new formula and begin preparation for the next round of degassing.

[0063] Optionally, during the entire process of liquid supply, switching, and cleaning, inert gas can be injected into the first degassing vessel 111 and the second degassing vessel 121 through the first pressurizing component to pressurize them, thereby ensuring the flow of polymer liquid or waste liquid in the pipeline.

[0064] According to the control method provided in the embodiment of the present invention, S500: controlling the first three-way valve 116 to disconnect the connection between the first connecting pipe 112 and the first feeding pipe 113, so that the first connecting pipe 112 is connected to the first discharge pipe 114, and controlling the first two-way valve 115 to close and controlling the cleaning assembly to inject cleaning liquid into the first defoaming kettle 111 for cleaning and generating waste liquid are as follows: S501: Control the first three-way valve 116 to disconnect the connection between the first connecting pipe 112 and the first feeding pipe 113, and connect the first connecting pipe 112 and the first discharge pipe 114 for a preset time t. S502: Control the first two-way valve 115 to close, and control the cleaning assembly to inject cleaning fluid into the first deaerator 111 for cleaning and generate waste liquid.

[0065] Understandably, the first connecting pipe 112 and the first discharge pipe 114 are connected for a preset time t. Within this preset time t, the residual polymer liquid in the first connecting pipe 112 and the first degassing vessel 111 can be discharged through the first discharge pipe 114. Then, the first two-way valve 115 is closed, the cleaning assembly is started, and cleaning liquid is injected into the first degassing vessel 111 to flush the vessel wall and generate waste liquid. Subsequently, the first two-way valve 115 is opened to connect the first connecting pipe 112 and the first discharge pipe 114, and the waste liquid is discharged. The entire cleaning process is automatically completed by a pre-set program without manual intervention. After cleaning, the first degassing vessel 111 can be used to add a new formula and begin the next round of degassing preparation.

[0066] Optionally, the interval time t can be 1 minute, 3 minutes, 5 minutes, etc., which can be set according to actual production needs.

[0067] The present invention also proposes an automated spinning device, which includes a spinning apparatus for continuous formula switching. The specific structure of the spinning apparatus for continuous formula switching is as described in the above embodiments. Since the automated spinning device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0068] Reference Figure 3 The automated spinning equipment provided according to the embodiments of the present invention includes two polymerization liquid treatment units 100. The first feed pipe 113 and the second feed pipe 123 of each polymerization liquid treatment unit 100 are connected to the spinning collection pipe 210 through a third three-way valve 220.

[0069] In actual production, the two polymerization liquid processing units 100 work in concert to achieve uninterrupted material supply. When the polymerization liquid in one polymerization liquid processing unit 100 is being transported to the spinning collection pipe 210 through its first feed pipe 113 or second feed pipe 123 via the third three-way valve 220 to provide raw materials for the spinning process, the other polymerization liquid processing unit 100 can simultaneously perform pre-treatment work such as polymerization liquid preparation and degassing. When the polymerization liquid supplied by the former is nearly exhausted, the automatic control system precisely controls the switching of the third three-way valve 220 to quickly switch the supply source to the latter, ensuring that there is always a sufficient supply of polymerization liquid in the spinning collection pipe 210, avoiding production stoppages due to supply interruptions, and greatly improving production efficiency.

[0070] Meanwhile, the existence of two independent polymerization liquor processing units 100 allows each unit to prepare polymerization liquor according to different formulations and process parameters. This enables flexible switching between different polymerization liquor formulations based on market demand or product characteristics during production. For example, when producing two fiber products with different properties, the two polymerization liquor processing units 100 can be controlled to prepare polymerization liquors with different formulations, and the process can be switched at appropriate times via the third three-way valve 220, allowing for more formulation options and meeting diverse production needs.

[0071] Of course, the present invention is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A spinning device with continuously switching formulations, characterized in that, include: The polymerization liquid treatment unit (100) includes a first treatment component (110), a second treatment component (120), and a cleaning component; The first processing component (110) includes a first degassing vessel (111), a first connecting pipe (112), a first feeding pipe (113), and a first discharge pipe (114). The first connecting pipe (112) is connected to the first degassing vessel (111) and is provided with a first two-way valve (115). The first feeding pipe (113) and the first discharge pipe (114) are connected to the first connecting pipe (112) through a first three-way valve (116). The second processing component (120) includes a second degassing vessel (121), a second connecting pipe (122), a second feeding pipe (123), and a second discharge pipe (124). The second connecting pipe (122) is connected to the second degassing vessel (121) and is provided with a second two-way valve (125). The second feeding pipe (123) and the second discharge pipe (124) are connected to the second connecting pipe (122) through a second three-way valve (126). The cleaning assembly is connected to the first deaeration vessel (111) and the second deaeration vessel (121) respectively, and is used to inject the cleaning liquid into the first deaeration vessel (111) and the second deaeration vessel (121). and The spinning unit (200) has a spinning collection tube (210), which is connected to the first feed tube (113) and the second feed tube (123) respectively through a third three-way valve (220).

2. The spinning apparatus for continuous formula switching according to claim 1, characterized in that, The first processing component (110) further includes a first stirring mechanism (117), which includes a first motor and a first stirring rod. The first motor is located in the first degassing vessel (111) and is driven by the first stirring rod. The first stirring rod extends into the interior of the first degassing vessel (111). The second processing component (120) further includes a second stirring mechanism (127), which includes a second motor and a second stirring rod. The second motor is located in the second degassing vessel (121) and is driven by the second stirring rod, which extends into the interior of the second degassing vessel (121).

3. The spinning apparatus for continuous formula switching according to claim 1, characterized in that, The polymerization liquid treatment unit (100) further includes a first pressurization component, which is connected to the first degassing vessel (111) and the second degassing vessel (121) respectively, for pressurizing the interior of the first degassing vessel (111) and the second degassing vessel (121).

4. The spinning apparatus for continuous formula switching according to claim 1, characterized in that, The first processing component (110) further includes a first discharge valve (118), which is connected to the first discharge pipe (114). The second processing component (120) further includes a second discharge valve (128), wherein the first discharge valve (118) is connected to the second discharge pipe (124). And / or, both the first discharge pipe (114) and the second discharge pipe (124) are connected to waste liquid collection devices.

5. The spinning apparatus for continuous formula switching according to any one of claims 1 to 4, characterized in that, The polymerization liquid treatment unit (100) further includes a polymerization component (130), which includes a polymerization kettle (131) and two feed pipes (133). The polymerization kettle (131) is connected to the first degassing kettle (111) and the second degassing kettle (121) through the two feed pipes (133).

6. The spinning apparatus for continuous formula switching according to claim 5, characterized in that, The polymerization assembly (130) also includes a polymerization mechanism (132), which includes a polymerization motor and a polymerization rod. The polymerization motor is located in the polymerization reactor (131) and is driven by the polymerization rod, which extends into the interior of the polymerization reactor (131). And / or, the polymerization liquid treatment unit (100) further includes a second pressurization component connected to the polymerization vessel (131) for pressurizing the interior of the polymerization vessel (131).

7. A control method applied to a spinning apparatus for continuous formulation switching as described in any one of claims 1 to 6, the spinning apparatus for continuous formulation switching further comprising a controller for controlling the polymerization solution treatment unit (100) and the spinning unit (200), characterized in that, The control method includes: The first two-way valve (115) is opened, and the first three-way valve (116) and the third three-way valve (220) are operated to connect the first connecting pipe (112), the first feeding pipe (113) and the spinning collection pipe (210). The polymer liquid in the first degassing kettle (111) flows into the spinning unit (200) through the first connecting pipe (112), the first feeding pipe (113) and the spinning collection pipe (210). Control the spinning unit (200) to perform spinning; The second two-way valve (125) is opened and the second three-way valve (126) is activated to connect the second connecting pipe (122) and the second discharge pipe (124). The polymer liquid in the second degassing kettle (121) flows into the second discharge pipe (124) through the second connecting pipe (122) to discharge the air in the second connecting pipe (122). The second three-way valve (126) is activated to disconnect the connection between the second connecting pipe (122) and the second discharge pipe (124) so ​​that the second connecting pipe (122) and the second feed pipe (123) are connected. Control the third three-way valve (220) to disconnect the connection between the first feed pipe (113) and the spinning collection pipe (210), so that the second feed pipe (123) and the spinning collection pipe (210) are connected, and the polymer liquid in the second degassing kettle (121) flows into the spinning unit (200) through the second connecting pipe (122), the second feed pipe (123) and the spinning collection pipe (210). Control the first three-way valve (116) to disconnect the first connecting pipe (112) from the first feeding pipe (113), so that the first connecting pipe (112) is connected to the first discharge pipe (114), and control the first two-way valve (115) to close, and control the cleaning assembly to inject the cleaning liquid into the first defoaming kettle (111) for cleaning and generate waste liquid; By controlling the opening of the first two-way valve (115), the waste liquid in the second degassing vessel (121) can flow out through the first connecting pipe (112) and the first discharge pipe (114).

8. The control method according to claim 7, characterized in that, The steps of controlling the first three-way valve (116) to disconnect the first connecting pipe (112) from the first feeding pipe (113), connecting the first connecting pipe (112) to the first discharge pipe (114), and controlling the first two-way valve (115) to close and controlling the cleaning assembly to inject cleaning liquid into the first defoaming kettle (111) for cleaning and generating waste liquid are as follows: Control the first three-way valve (116) to disconnect the connection between the first connecting pipe (112) and the first feeding pipe (113), so that the first connecting pipe (112) and the first discharge pipe (114) are connected for a preset time t; The first two-way valve (115) is closed, and the cleaning assembly is controlled to inject cleaning fluid into the first defoaming vessel (111) for cleaning and generate waste liquid.

9. An automated spinning device, characterized in that, The spinning apparatus includes a formulation switching device as described in any one of claims 1 to 8.

10. The automated spinning equipment according to claim 9, characterized in that, The spinning device with continuous formula switching includes two polymer liquid treatment units (100), and the first feed pipe (113) and the second feed pipe (123) of each polymer liquid treatment unit (100) are connected to the spinning collection pipe (210) through a third three-way valve (220).

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