Fiber coloring equipment and fiber coloring method

Abstract

The embodiment of the invention provides fiber coloring equipment and a fiber coloring method, and relates to the technical field of fiber coloring. The fiber coloring equipment comprises a first container device, an air pressure adjusting assembly and a first switch valve. The first container device is internally provided with a first cavity, and the first cavity is used for loading a hollow fiber material and a liquid coloring agent so that the coloring agent can immerse the hollow fiber material; the first container device is further provided with a first communication opening, the first communication opening is communicated with the first cavity, the first communication opening is connected with one end of a first switch valve, and the other end of the first switch valve is used for being connected with a coloring agent storage device. The air pressure adjusting assembly is connected with the first container device and used for adjusting the air pressure in the first cavity so that the air pressure in the first cavity can be converted between the positive pressure and the negative pressure. In this way, the inner cavity of the tubular hollow fiber can be filled with the coloring agent conveniently, so that all positions of the inner cavity of the tubular hollow fiber can be colored conveniently.

Description

Technical Field

[0001] This application relates to the field of fiber coloring technology, and in particular to a fiber coloring device and a fiber coloring method. Background Technology

[0002] Fibers can be used to improve strength and stiffness and can be applied to various structural components. Colored fibers are fibers with color effects, which can be obtained through fiber coloring treatment. Applying colored fibers to structural components can not only improve the strength and stiffness of the components, but also give them a rich and colorful appearance.

[0003] In related technologies, one end of a tubular hollow fiber can be immersed in a liquid colorant, and the liquid colorant can be drawn into the inner cavity of the tubular hollow fiber by utilizing the capillary effect, thereby achieving the coloring of the tubular hollow fiber and obtaining colored fiber.

[0004] However, in some scenarios, it is difficult to fill the inner cavity of the tubular hollow fiber with liquid colorant using the capillary effect, resulting in difficulty in coloring certain parts of the inner cavity of the tubular hollow fiber. Summary of the Invention

[0005] This application provides a fiber coloring device and a fiber coloring method, which facilitates the filling of the inner cavity of the tubular hollow fiber with colorant, so as to color various positions in the inner cavity of the tubular hollow fiber.

[0006] A first aspect of this application provides a fiber coloring apparatus, comprising a first container device, a pressure regulating component, and a first switching valve. The first container device has a first chamber for loading hollow fiber material and liquid colorant, allowing the colorant to immerse the hollow fiber material. The first container device also has a first connecting port, which communicates with the first chamber and is connected to one end of the first switching valve. The other end of the first switching valve is used to connect to a colorant storage device. The pressure regulating component is connected to the first container device and is used to regulate the air pressure within the first chamber, allowing the air pressure within the first chamber to switch between positive and negative pressure.

[0007] The embodiments provided in this application allow the air pressure in the first chamber to be switched between positive and negative pressure via an air pressure regulating component. This facilitates the extraction of air from the inner cavity of the target fiber and provides greater pressure for the liquid colorant to be injected into the inner cavity of the target fiber. This reduces the resistance caused by the gas inside the target fiber to the flow of the colorant into the fiber, and also allows the colorant to overcome the resistance within the fiber and fill the inner cavity, thus facilitating coloring at various locations on the target fiber. Furthermore, the air pressure regulating component's switching between positive and negative pressure in the first chamber also facilitates the intake and exhaust of the colorant within the first chamber.

[0008] In one possible implementation, the pressure regulating assembly includes a second switching valve, a third switching valve, a first vacuum pump, and a gas supply device. The first container device also has a second connection port and a third connection port, both of which communicate with a first chamber. The second connection port is connected to one end of the second switching valve, and the other end of the second switching valve is connected to the first vacuum pump, which is used to extract gas from the first chamber through the open second switching valve and the second connection port. The third connection port is connected to one end of the third switching valve, and the other end of the third switching valve is connected to the gas supply device, which is used to supply gas into the first chamber through the open third switching valve and the third connection port.

[0009] This makes it easier to regulate the air pressure in the first chamber.

[0010] In one possible implementation, the first container device includes a first outer container and a first inner container. The first outer container has a first chamber, and the first inner container is disposed within the first chamber. The first chamber includes a first space located within the first inner container and a second space located outside the first inner container. The top of the first inner container has a first opening, and the first space and the second space communicate through the first opening. The first space is used to hold hollow fiber material and a liquid colorant, allowing the colorant to impregnate the hollow fiber material. The first inner container has a first connecting port, which communicates with the first space. The first outer container has a second connecting port and a third connecting port, both of which communicate with the second space.

[0011] Thus, the first space connects to the second space through the first opening at the top, preventing the colorant and hollow fiber material loaded in the first space from easily entering the second space. The second connecting port connects to the first space through both the second space and the first opening, preventing the colorant and hollow fiber material from being sucked into the first vacuum pump. The third connecting port connects to the first space through both the second space and the first opening, facilitating the pressure of the gas supplied by the gas supply device on the liquid surface of the colorant, thereby forcing the colorant into the inner cavity of the target fiber. Furthermore, it avoids the problem of difficulty or uneven filling of the colorant within the target fiber due to an increased gas content caused by the gas supplied by the gas supply device. Additionally, the positions of the second and third connecting ports are relatively flexible.

[0012] In one possible implementation, the first outer container includes a first tank body and a first lid. The top of the first tank body has a second opening, and the first lid is openable and closable and fits onto the top of the first tank body, sealing the second opening. The first tank body and the first lid form a first chamber, and a first inner container is connected to the first tank body.

[0013] In this way, hollow fiber materials can be easily accessed and removed through the second opening. Furthermore, the first can lid is attached to the top of the first can body, which facilitates pressure resistance of the first outer container. It also facilitates cleaning and maintenance of the first chamber.

[0014] In one possible implementation, both the second and third connecting ports are located on the first tank body.

[0015] In this way, the second and third connecting ports will not shift as the first can lid is opened and closed, which facilitates the connection of the second and third switching valves, the first vacuum pump and the gas supply device with the first external container.

[0016] In one possible implementation, the first inner container is detachably connected to the first tank body, and the first switch valve is detachably connected to the first communication port.

[0017] Thus, when using different colorants for coloring, the corresponding first inner container can be replaced to avoid different colorants interfering with each other when loaded into the same first inner container. Furthermore, the first inner container can be removed from the first tank for inspection and cleaning, making inspection and cleaning of the first inner container relatively easy.

[0018] In one possible implementation, the fiber dyeing apparatus further includes a first connecting pipe. A first tank has a first through-hole, and the first connecting pipe passes through the first through-hole and is sealed to the first tank. One end of the first connecting pipe is located inside the first tank and is detachably connected to a first communication port, while the other end of the first connecting pipe is located outside the first tank and is connected to a first switching valve, which is detachably connected to the first communication port via the first connecting pipe.

[0019] Thus, the first switching valve is located outside the first chamber, and its performance is not affected by changes in air pressure within the first chamber.

[0020] In one possible implementation, the fiber coloring apparatus further includes a material rack disposed within a first chamber, the material rack being used to fix hollow fiber material.

[0021] In this way, the material rack can support the hollow fiber material, facilitating the entry of the colorant into the inner cavity of the target fiber. Furthermore, once the hollow fiber material is fixed by the material rack, it is less prone to movement, which is beneficial for the stable coloring of the hollow fiber material by the colorant.

[0022] In one possible implementation, a filter is provided at the first connection port.

[0023] This facilitates the filtration of the colorant as it flows out of the first chamber, preventing fallen fibers and other debris from flowing out of the first chamber with the colorant and reducing the risk of problems such as blockage of the colorant flow path or failure of the first switching valve.

[0024] In one possible implementation, the fiber dyeing apparatus further includes a first air pressure detection device disposed in a first chamber, the first air pressure detection device being used to detect the air pressure within the first chamber.

[0025] This makes it easier to control the air pressure in the first chamber, so as to control the fiber coloring process based on the air pressure in the first chamber.

[0026] In one possible implementation, the fiber coloring apparatus further includes a colorant storage device. The colorant storage device includes a second container device. The second container device has a second chamber for storing liquid colorant. The second container device has a fourth connection port and a fifth connection port, both of which communicate with the second chamber. The fourth connection port is connected to a first switching valve, and the fifth connection port is used to allow gas to enter and exit the second chamber.

[0027] This facilitates the flow of colorant stored in the second chamber into the first chamber to color the hollow fiber material. Furthermore, it allows the colorant to flow back into the second chamber for storage after coloring the hollow fiber material, enabling it to be reused in the next coloring cycle.

[0028] In one possible implementation, the colorant storage device further includes a stirring mechanism. The stirring mechanism is disposed within a second chamber and is used to stir the colorant stored within the second chamber.

[0029] In this way, the stirring mechanism can expel the gas from the colorant in the second chamber, reducing the gas content of the colorant and making it less likely to cause problems such as difficulty or uneven filling of the colorant into the target fiber due to high gas content. In addition, it can also mix the pigment that has settled due to long-term standing evenly, so as to facilitate uniform coloring of the target fiber.

[0030] In one possible implementation, the colorant storage device further includes a fourth switching valve, a fifth switching valve, and a second vacuum pump. A fifth connection port is connected to the fourth switching valve. The second container device also has a sixth connection port communicating with a second chamber. The sixth connection port is connected to one end of the fifth switching valve, and the other end of the fifth switching valve is connected to the second vacuum pump, which is used to extract gas from the second chamber through the open fifth switching valve and the sixth connection port.

[0031] Thus, by using a second vacuum pump to extract the gas from the second chamber, it is easier to remove the gas stirred by the stirring mechanism from the colorant from the second chamber. In addition, the second vacuum pump can reduce the gas pressure in the second chamber to a negative pressure, which is beneficial for extracting gas from the colorant during the stirring process of the stirring mechanism, thereby reducing the gas content of the colorant.

[0032] In one possible implementation, the second container device includes a second outer container and a second inner container. The second outer container has a second chamber, and the second inner container is disposed within the second chamber. The second chamber includes a third space located within the second inner container and a fourth space located outside the second inner container. The top of the second inner container has a third opening, and the third and fourth spaces communicate through the third opening. The third space is used to store liquid colorant, and a stirring mechanism is disposed within the third space to stir the colorant stored therein. The second inner container has a fourth connecting port, which communicates with the third space. The second outer container has a fifth connecting port and a sixth connecting port, which communicates with the fourth space.

[0033] Thus, the third space is connected to the fourth space through the opening at the top of the third space, making it difficult for the colorant loaded in the third space to enter the fourth space. The sixth connecting port is connected to the third space through the fourth space and the third opening, making it difficult for the colorant to be sucked into the second vacuum pump. In addition, the position of the sixth connecting port is relatively flexible.

[0034] In one possible implementation, the fifth connection is located at the top of the second outer container, and the vertical projection of the fifth connection is located within the vertical projection of the third opening.

[0035] This facilitates the injection of colorant into the third space through the fifth connection port, eliminating the need for a separate connection port for colorant injection.

[0036] In one possible implementation, a guide tube is provided in the second chamber, one end of which is connected to the fifth communication port, and the other end of which is located in the third space. The fifth communication port is connected to the third space through the guide tube, and the guide tube is located above the stirring mechanism.

[0037] This facilitates the injection of colorant into the third space through the fifth connecting port, and the colorant injected into the second chamber through the fifth connecting port is less likely to flow into the fourth space.

[0038] In one possible implementation, the second outer container includes a second tank body and a second lid. The top of the second tank body has a fourth opening, and the second lid is closable and fits onto the top of the second tank body, sealing the fourth opening. The second tank body and the second lid form a second chamber. The second inner container is detachably connected to the second tank body, and the first switching valve is detachably connected to the fourth communication port.

[0039] This facilitates cleaning and maintenance of the second chamber. Furthermore, the second lid fits onto the top of the second tank, improving the pressure resistance of the outer container. Additionally, when using different colorants sequentially, the corresponding inner container can be replaced to prevent interference between different colorants stored in the same inner container. Moreover, the inner container can be removed from the second tank, further reducing the difficulty of cleaning and maintenance of it.

[0040] A second aspect of this application provides a fiber coloring method, employing the fiber coloring equipment described in any of the above embodiments, the method comprising the steps of:

[0041] After the hollow fiber material is loaded into the first chamber of the fiber coloring equipment, the air pressure in the first chamber is reduced to a first preset value by the air pressure regulating component of the fiber coloring equipment. The hollow fiber material includes the target fiber, which is a tubular hollow fiber. The openings at both ends of the target fiber are connected to the first chamber. The first preset value is less than 1 standard atmosphere.

[0042] After the air pressure in the first chamber drops to the first preset value, the first switch valve of the fiber coloring device is switched from the closed state to the open state so that the liquid colorant enters the first chamber through the first connection port of the fiber coloring device.

[0043] After the hollow fiber material loaded in the first chamber is submerged in the colorant, the first switch valve is switched from the open state to the closed state.

[0044] After the first switch valve switches from the open state to the closed state, the air pressure in the first chamber is increased to a second preset value through the air pressure regulating component, wherein the second preset value is greater than 1 standard atmosphere.

[0045] After the air pressure in the first chamber is increased to the second preset value, the air pressure in the first chamber is maintained at the second preset value for a preset time so that the inner cavity of the target fiber is filled with liquid colorant to obtain colored fiber material intermediate.

[0046] The colored fiber material intermediate is post-processed to obtain the colored fiber material, wherein the colored fiber material includes the target fiber and the colorant, and the inner wall of the target fiber is covered by the colorant.

[0047] The fiber coloring method provided in this application embodiment can switch the air pressure in the first chamber between positive and negative pressure through an air pressure regulating component. This facilitates the extraction of air from the inner cavity of the target fiber and provides greater pressure for the liquid colorant to be injected into the inner cavity of the target fiber. This reduces the resistance caused by the gas in the inner cavity of the target fiber to the flow of the colorant into the inner cavity of the target fiber, and also facilitates the colorant to overcome the resistance in the target fiber and fill the inner cavity of the target fiber. This allows for coloring of various positions of the target fiber, resulting in a colored fiber material whose inner wall is covered by the colorant.

[0048] In one possible implementation, the first preset value is less than 1 Pa.

[0049] This allows the gas inside the target fiber to be evacuated before the colorant enters the inner cavity of the target fiber, so that the colorant can fill the inner cavity of the target fiber.

[0050] In one possible implementation, the second preset value is greater than or equal to 0.2 MPa and less than or equal to 1 MPa.

[0051] This allows for a larger pressure difference between the inner cavity of the target fiber and the first chamber, facilitating the filling of the target fiber's inner cavity with the colorant. Furthermore, it also promotes safe operation of the equipment.

[0052] In one possible implementation, the preset time is greater than or equal to 30 minutes.

[0053] This provides sufficient time for the liquid colorant to flow within the target fiber, allowing the inner cavity of the target fiber to be filled with the liquid colorant.

[0054] In one possible implementation, before switching the first switching valve of the fiber coloring device from a closed state to an open state to allow the liquid colorant to enter the first chamber through the first connection port of the fiber coloring device, the method further includes the step of:

[0055] The liquid colorant stored in the second chamber of the fiber coloring equipment is stirred by the stirring mechanism of the fiber coloring equipment.

[0056] In this way, the gas in the colorant in the second chamber can be expelled, reducing the gas content of the colorant and making it less likely to cause problems such as difficulty or uneven filling of the colorant into the target fiber due to high gas content. In addition, pigments that have settled due to long-term standing can be mixed evenly to facilitate uniform coloring of the target fiber.

[0057] In one possible implementation, before switching the first switching valve of the fiber coloring device from a closed state to an open state to allow the liquid colorant to enter the first chamber through the first connection port of the fiber coloring device, the method further includes the step of:

[0058] Close the fourth switch valve of the fiber coloring equipment, open the fifth switch valve and the second vacuum pump of the fiber coloring equipment, and reduce the air pressure in the second chamber to the third preset value, wherein the third preset value is less than 1 standard atmosphere.

[0059] Thus, by using a second vacuum pump to extract the gas from the second chamber, it is easier to remove the gas stirred by the stirring mechanism from the colorant from the second chamber. In addition, the second vacuum pump can reduce the gas pressure in the second chamber to a negative pressure, which is beneficial for extracting gas from the colorant during the stirring process of the stirring mechanism, thereby reducing the gas content of the colorant.

[0060] In one possible implementation, after maintaining the air pressure in the first chamber at a second preset value for a preset time to fill the cavity of the target fiber with liquid colorant to obtain a colored fiber material intermediate, the method further includes the step of:

[0061] Switch the first switch valve from the closed state to the open state, and use the air pressure in the first chamber to discharge the colorant in the first chamber through the first connecting port.

[0062] This facilitates the removal of the colorant after the hollow fiber material has been colored, making it easier to extract the colored fiber material intermediate. Attached Figure Description

[0063] Figure 1 This is a schematic diagram of a fiber coloring apparatus provided in an embodiment of the present application before the colorant enters the first chamber;

[0064] Figure 2 for Figure 1 A schematic diagram of hollow fiber material loaded in the first chamber of the fiber coloring equipment provided in the diagram being immersed in colorant;

[0065] Figure 3 for Figure 1 A schematic diagram of the fiber coloring equipment provided in the diagram when the colorant is discharged from the first chamber;

[0066] Figure 4 A schematic diagram of a colorant storage device provided in an embodiment of this application;

[0067] Figure 5 An external schematic diagram of a fiber dyeing apparatus provided in an embodiment of this application;

[0068] Figure 6 for Figure 5 An external schematic diagram of the fiber dyeing equipment provided in the image;

[0069] Figure 7 This is a cross-sectional schematic diagram of a fiber dyeing device provided in an embodiment of this application;

[0070] Figure 8 This is a cross-sectional schematic diagram of another fiber dyeing device provided in an embodiment of this application;

[0071] Figure 9 A cross-sectional schematic diagram of another fiber dyeing device provided in the embodiments of this application;

[0072] Figure 10 This is a process flow diagram of a fiber coloring method provided in an embodiment of this application.

[0073] Explanation of reference numerals in the attached figures:

[0074] 10. Colorant storage device; 20. Hollow fiber material; 30. Colorant;

[0075] 100. First container device; 110. First outer container; 111. First tank body; 1111. Second connecting port; 1112. Third connecting port; 112. First tank lid; 113. First locking mechanism; 120. First inner container; 121. First connecting port; 122. Filter; 130. First chamber; 131. First space; 132. Second space; 140. Material rack;

[0076] 200. Pressure regulating component; 210. Second switching valve; 220. Third switching valve; 230. First vacuum pump; 240. Gas supply device;

[0077] 300, First switching valve; 310, First connecting pipe; 320, Second connecting pipe;

[0078] 400. Second container device; 410. Second outer container; 411. Second tank body; 4111. Sixth connecting port; 412. Second tank cover; 4121. Fifth connecting port; 413. Second locking mechanism; 420. Second inner container; 421. Fourth connecting port; 430. Second chamber; 431. Third space; 432. Fourth space; 440. Guide pipe;

[0079] 500. Stirring mechanism; 510. Stirring motor; 520. Transmission rod;

[0080] 610. Fourth switching valve; 620. Fifth switching valve; 630. Second vacuum pump; 640. Pressure relief valve;

[0081] 710. First air pressure detection device; 720. Second air pressure detection device. Detailed Implementation

[0082] The terminology used in the implementation section of this application is only for explaining specific embodiments of this application and is not intended to limit this application. The implementation of the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0083] Colored fibers can be used in structural components of electronic devices, home appliances, vehicles, and other products to improve the strength, rigidity, and appearance of these components. Colored fibers are formed by filling the inner cavity of tubular hollow fibers with a coloring agent. Colored fibers formed by filling the inner cavity of tubular hollow fibers with a coloring agent have advantages such as easy control over the color of the formed fibers and the coloring agent being less prone to wear.

[0084] Among them, tubular hollow fiber refers to fiber with a tubular structure, that is, tubular hollow fiber has a hollow inner cavity that extends along the extension direction of tubular hollow fiber and passes through both ends of tubular hollow fiber.

[0085] In related technologies, one end of a tubular hollow fiber can be immersed in a liquid colorant, and the liquid colorant can be drawn into the inner cavity of the tubular hollow fiber by utilizing the capillary effect, thereby achieving the coloring of the tubular hollow fiber and obtaining colored fiber.

[0086] However, due to the resistance of the gas inside the tubular hollow fiber and the resistance of the inner wall of the tubular hollow fiber, it is difficult to fill the inner cavity of the tubular hollow fiber with liquid colorant by using the capillary effect when the inner diameter of the tubular hollow fiber is small, the length of the tubular hollow fiber is long, or the viscosity of the colorant is high. This makes it difficult to color some parts of the inner cavity of the tubular hollow fiber.

[0087] Figure 1 This is a schematic diagram of a fiber coloring apparatus provided in an embodiment of this application before the colorant enters the first chamber.

[0088] like Figure 1 As shown, based on this, this application embodiment provides a fiber coloring device, which includes a first container device 100, the first container device 100 having a first chamber 130, the first chamber 130 being used to load hollow fiber material 20 and liquid colorant 30, so that the colorant 30 can immerse the hollow fiber material 20.

[0089] Hollow fiber material 20 refers to a material comprising tubular hollow fibers. For example, hollow fiber material 20 may include, but is not limited to, fiber yarn, fiber fabric, fiber-reinforced composite material, etc.

[0090] The hollow fiber material 20 loaded into the first chamber 130 includes the target fiber to be colored. The target fiber is a tubular hollow fiber, and the openings at both ends of the target fiber are connected to the first chamber 130.

[0091] For example, the target fiber is a fiber with a certain degree of transparency. In some examples, the target fiber can be a transparent fiber. In other examples, the target fiber can also be a translucent fiber.

[0092] For example, the target fiber may include, but is not limited to, glass fiber, quartz fiber, carbon fiber, ceramic fiber, organic fiber, etc.

[0093] For example, the length of the target fiber can be greater than or equal to 1 cm. For instance, the length of the target fiber can be greater than or equal to 3 cm. Or, the length of the target fiber can be greater than or equal to 5 cm. Or, the length of the target fiber can be greater than or equal to 10 cm. Or, the length of the target fiber can be greater than or equal to 20 cm. Or, the length of the target fiber can be greater than or equal to 50 cm. Or, the length of the target fiber can be greater than or equal to 100 cm.

[0094] For example, the inner diameter of the target fiber can be less than or equal to 20 μm. For instance, the inner diameter of the target fiber can be less than or equal to 10 μm. Or, the inner diameter of the target fiber can be less than or equal to 8 μm. Or, the inner diameter of the target fiber can be less than or equal to 5 μm. Or, the inner diameter of the target fiber can be less than or equal to 3 μm.

[0095] For example, the liquid colorant 30 may include, but is not limited to, water-based colorants, resin-based colorants, alcohol-based colorants, aldehyde-based colorants, etc. Specifically, water-based colorants refer to colorants 30 with water as the base, resin-based colorants refer to colorants 30 with resin as the base, alcohol-based colorants refer to colorants 30 with alcohol as the base, and aldehyde-based colorants refer to colorants 30 with aldehyde as the base.

[0096] For example, the liquid colorant 30 may include, but is not limited to, a coloring solution, a coloring suspension, a coloring colloid, etc. In some examples, the liquid colorant 30 may include a liquid matrix and a dye dissolved in the matrix. In some examples, the liquid colorant 30 may include a liquid matrix and particulate pigments suspended in the matrix.

[0097] For example, colorant 30 can be a colorant with a fixed color or a colorant whose color can be changed under certain conditions.

[0098] For example, colorant 30 may include fluorescent colorant or highlight colorant.

[0099] In this embodiment, the first container device 100 is a pressure-resistant container device, capable of withstanding pressure changes from negative to positive. The fiber dyeing equipment also includes a pressure regulating component 200 and a first switching valve 300. The first container device 100 further has a first connecting port 121, which communicates with a first chamber 130. The first connecting port 121 is connected to one end of the first switching valve 300, and the other end of the first switching valve 300 is used to connect to a colorant storage device 10, which stores liquid colorant 30. When the first switching valve 300 is closed, the first chamber 130 becomes a sealed chamber. The pressure regulating component 200 is connected to the first container device 100 and is used to regulate the pressure within the first chamber 130, allowing the pressure within the first chamber 130 to switch between positive and negative pressure. Positive pressure refers to pressure greater than one standard atmosphere, and negative pressure refers to pressure less than one standard atmosphere.

[0100] In this way, the air pressure regulating component 200 can switch the air pressure in the first chamber 130 between positive and negative pressure. This facilitates the extraction of air from the inner cavity of the target fiber and provides greater pressure for the liquid colorant 30 to be injected into the inner cavity of the target fiber. This reduces the resistance caused by the gas inside the target fiber to the flow of the colorant 30 into the target fiber, and also facilitates the colorant 30 overcoming the resistance within the target fiber to fill the inner cavity, thus enabling coloring at various locations on the target fiber. Furthermore, the air pressure regulating component 200's switching of the air pressure in the first chamber 130 between positive and negative pressure also facilitates the intake and exhaust of the colorant 30 within the first chamber 130.

[0101] Specifically, hollow fiber material 20 can be loaded into the first chamber 130 when the first switch valve 300 is in the closed state. After the hollow fiber material 20 is loaded into the first chamber 130, the air pressure in the first chamber 130 is adjusted to a negative pressure by the air pressure regulating component 200, so that the gas in the inner cavity of the target fiber is extracted and the air pressure in the inner cavity of the target fiber decreases. After the gas in the inner cavity of the target fiber is extracted, the first switch valve 300 is switched from the closed state to the open state, so that the colorant 30 in the colorant storage device 10 flows into the first chamber 130 through the first connecting port 121. Under the action of the pressure difference between the inner cavity of the target fiber and the first chamber 130, the colorant 30 flowing into the first chamber 130 will be forced into the inner cavity of the target fiber. Before the colorant 30 enters the inner cavity of the target fiber, the gas in the target fiber has been extracted, so it will not obstruct the flow of the colorant 30 in the inner cavity of the target fiber, which is conducive to the colorant 30 filling the inner cavity of the target fiber.

[0102] After the colorant 30 has submerged the hollow fiber material 20, the first switch valve 300 is switched from the open state to the closed state. Then, the air pressure in the first chamber 130 is adjusted to a positive pressure by the air pressure regulating component 200 to increase the pressure difference between the inner cavity of the target fiber and the first chamber 130. In this way, the colorant 30 can be further forced into the inner cavity of the target fiber by the gas in the first chamber 130. The large pressure difference between the inner cavity of the target fiber and the first chamber 130 is conducive to the colorant 30 overcoming the resistance in the target fiber and filling the inner cavity of the target fiber.

[0103] Thus, even in scenarios where the inner diameter of the tubular hollow fiber is small, the length of the tubular hollow fiber is long, or the viscosity of the colorant 30 is high, the inner cavity of the target fiber can be filled with liquid colorant 30, so as to achieve coloring of all positions in the inner cavity of the target fiber.

[0104] For example, the first container device 100 can withstand pressure changes from vacuum to greater than or equal to 1 MPa.

[0105] In some examples, the fiber coloring apparatus may include a colorant storage device 10.

[0106] In other examples, the fiber coloring apparatus may not include the colorant storage device 10, which is independent of the fiber coloring apparatus and is detachably connected to the first switching valve 300.

[0107] In some possible embodiments, the colorant storage device 10 includes a second container device 400. The second container device 400 has a second chamber 430 for storing liquid colorant 30. The second container device 400 has a fourth connection port 421 and a fifth connection port 4121, both of which are connected to the second chamber 430. The fourth connection port 421 is connected to a first switching valve 300. The fifth connection port 4121 is used to allow gas to enter and exit the second chamber 430 to balance the air pressure between the second chamber 430 and the outside of the second container device 400. The fifth connection port 4121 may be located above the fourth connection port 421. When the first switching valve 300 is in the open state, the first chamber 130 is connected to the second chamber 430, and the colorant 30 can flow between the first chamber 130 and the second chamber 430.

[0108] This facilitates the flow of the colorant 30 stored in the second chamber 430 into the first chamber 130 to color the hollow fiber material 20. Furthermore, it also facilitates the return of the colorant 30 to the second chamber 430 for storage after coloring the hollow fiber material 20, allowing the colorant 30 returned to the second chamber 430 to be reused in the next coloring process.

[0109] For example, the fifth connection port 4121 may be located on top of the second container device 400.

[0110] In some examples, during the coloring process of hollow fiber material 20, the fifth port 4121 can be connected to the outside atmosphere.

[0111] In other examples, during the coloring process of the hollow fiber material 20, the fifth connecting port 4121 can be detachably connected to the gas collection device, making it difficult for the gas in the second chamber 430 to flow into the outside atmosphere and cause air pollution. After the coloring of the hollow fiber material 20 is completed, the gas collection device can be detached from the fifth connecting port 4121. For example, the gas collection device can be a gas collection bag.

[0112] For example, the fifth communication port 4121 can also be used to inject colorant 30 into the second chamber 430. The fifth communication port 4121 can be detachably connected to the colorant supply device. When it is necessary to inject colorant 30 into the second chamber 430, the fifth communication port 4121 can be connected to the colorant supply device. After the injection of colorant 30 into the second chamber 430 is completed, the colorant supply device can be detached from the fifth communication port 4121.

[0113] Figure 2 for Figure 1 A schematic diagram showing the hollow fiber material, loaded in the first chamber of the fiber dyeing equipment provided, being immersed in the dyeing agent. Figure 3 for Figure 1 The diagram shows the fiber coloring equipment provided in the diagram when the colorant is discharged from the first chamber.

[0114] like Figure 2 , Figure 3 As shown, and see Figure 1 After adjusting the air pressure in the first chamber 130 to a negative pressure using the air pressure regulating component 200 and extracting the gas from the target fiber of the hollow fiber material 20 loaded in the first chamber 130, the first switch valve 300 can be switched from the closed state to the open state. The negative pressure in the first chamber 130 can then be used to draw the colorant 30 stored in the second chamber 430 into the first chamber 130. At this time, gas can enter the second chamber 430 through the fifth connecting port 4121 to balance the air pressure in the second chamber 430 and outside the second container device 400. After the colorant 30 has submerged the hollow fiber material 20, the first switch valve 300 can be switched from the open state to the closed state, and then the air pressure in the first chamber 130 can be adjusted from the closed state using the air pressure regulating component 200. The air pressure inside chamber 0 is adjusted to positive pressure to color the hollow fiber material 20. After the hollow fiber material 20 is colored, the first switch valve 300 can be switched from the closed state to the open state. The positive pressure inside the first chamber 130 can be used to make the colorant 30 in the first chamber 130 flow back into the second chamber 430. At this time, the gas in the second chamber 430 flows out of the second chamber 430 through the fifth connecting port 4121 to balance the air pressure outside the second chamber 430 and the second container device 400. After all the colorant 30 in the first chamber 130 has flowed back into the second chamber 430, the first switch valve 300 is switched from the open state to the closed state. Then the colored fiber material intermediate formed by coloring the hollow fiber material 20 is taken out.

[0115] In some possible implementations, the fiber dyeing apparatus further includes a first air pressure detection device 710, which is disposed in the first chamber 130 and is used to detect the air pressure in the first chamber 130.

[0116] This makes it easier to monitor the air pressure inside the first chamber 130, so as to control the fiber coloring process based on the air pressure inside the first chamber 130.

[0117] In some possible implementations, the fiber coloring apparatus further includes a first liquid level detection device disposed within the first chamber 130, which is used to detect the liquid level of the colorant 30 within the first chamber 130.

[0118] This makes it easier to monitor the level of the colorant 30 in the first chamber 130, so as to control the fiber coloring process based on the level of the colorant 30 in the first chamber 130.

[0119] In some possible implementations, the first container device 100 may have a first observation window. This facilitates observation of the contents of the first chamber 130 from the outside of the first container device 100, and helps to obtain information such as the liquid level in the first chamber 130.

[0120] In some possible implementations, a filter 122 is provided at the first connection port 121.

[0121] This facilitates the filtration of the colorant 30 when it flows back to the second chamber 430 from the first chamber 130, preventing fallen fibers and other debris from flowing out of the first chamber 130 with the colorant 30 and reducing the likelihood of blockages in the flow path between the first chamber 130 and the second chamber 430, or failure of the first switching valve 300.

[0122] In some possible implementations, the fiber dyeing apparatus further includes a material rack 140 disposed within the first chamber 130, the material rack 140 being used to fix the hollow fiber material 20.

[0123] In this way, the material rack 140 can support the hollow fiber material 20, which facilitates the entry of the colorant 30 into the inner cavity of the target fiber. In addition, after the hollow fiber material 20 is fixed by the material rack 140, it is not easy to shake, which is conducive to the stable coloring of the hollow fiber material 20 by the colorant 30.

[0124] like Figure 1As shown, in some possible embodiments, the pressure regulating assembly 200 includes a second switching valve 210, a third switching valve 220, a first vacuum pump 230, and a gas supply device 240. The first container device 100 also has a second connection port 1111 and a third connection port 1112, both of which are connected to the first chamber 130. The second connection port 1111 is connected to one end of the second switching valve 210, and the other end of the second switching valve 210 is connected to the first vacuum pump 230. The first vacuum pump 230 is used to extract gas from the first chamber 130 through the open second switching valve 210 and the second connection port 1111 to reduce the gas pressure in the first chamber 130. The third connection port 1112 is connected to one end of the third switch valve 220, and the other end of the third switch valve 220 is connected to the gas supply device 240. The gas supply device 240 is used to supply gas into the first chamber 130 through the open third switch valve 220 and the third connection port 1112 to increase the gas pressure in the first chamber 130.

[0125] This facilitates the adjustment of the air pressure in the first chamber 130.

[0126] When the first switching valve 300, the second switching valve 210 and the third switching valve 220 are all closed, the first chamber 130 can be a sealed chamber.

[0127] When the first switch valve 300 is closed, the second switch valve 210 is open, and the third switch valve 220 is closed, the gas in the first chamber 130 can be extracted by the first vacuum pump 230 to reduce the gas pressure in the first chamber 130.

[0128] When the first switch valve 300 and the second switch valve 210 are closed and the third switch valve 220 is open, gas can be supplied into the first chamber 130 through the gas supply device 240 to increase the gas pressure in the first chamber 130.

[0129] For example, the gas supply device 240 can be an air supply device or a nitrogen supply device for supplying air or nitrogen to the first chamber 130.

[0130] For example, the gas supply device 240 may include a high-pressure gas cylinder, the output end of which is connected to a third switching valve 220.

[0131] For example, the air supply device 240 may also include an air compressor connected to a high-pressure gas cylinder, which can supply compressed air to the high-pressure gas cylinder.

[0132] In some examples, the second connection port 1111 may be located at the top of the first container device 100, and the highest liquid level in the first chamber 130 may be below the second connection port 1111, making it difficult to draw the liquid in the first chamber 130 into the first vacuum pump 230.

[0133] In some examples, the third connection port 1112 may be located at the upper part of the first container device 100, and the highest liquid level in the first chamber 130 may be below the third connection port 1112, so that the gas supplied by the gas supply device 240 can pressurize the liquid surface of the colorant 30 to force the colorant 30 into the inner cavity of the target fiber. Furthermore, it is less likely that the colorant 30 will be difficult to fill or unevenly fill within the target fiber due to an increase in the gas content of the colorant 30 caused by the gas supplied by the gas supply device 240.

[0134] In some other possible implementations, the air pressure regulating assembly 200 may also include a piston mechanism that is in communication with the first chamber 130 and can regulate the air pressure in the first chamber 130 by the piston movement of the piston mechanism.

[0135] like Figure 1 As shown, in some examples where the pressure regulating assembly 200 includes a second switching valve 210, a third switching valve 220, a first vacuum pump 230, and a gas supply device 240, the first container device 100 includes a first outer container 110 and a first inner container 120. The first outer container 110 has a first chamber 130, and the first inner container 120 is disposed within the first chamber 130. The first chamber 130 includes a first space 131 located within the first inner container 120 and a second space 132 located outside the first inner container 120. The top of the first inner container 120 has a first opening, and the first space 131 and the second space 132 communicate through the first opening. The first space 131 is used to load hollow fiber material 20 and liquid colorant 30 so that the colorant 30 can immerse the hollow fiber material 20. The first inner container 120 has a first connecting port 121, which communicates with the first space 131. The first external container 110 has a second communication port 1111 and a third communication port 1112, both of which are connected to the second space 132.

[0136] In this way, the first space 131 is connected to the second space 132 through the first opening at the top, making it difficult for the colorant 30 and hollow fiber material 20 loaded in the first space 131 to enter the second space 132. The second connecting port 1111 is connected to the first space 131 through the second space 132 and the first opening, making it difficult for the colorant 30 and hollow fiber material 20 to be sucked into the first vacuum pump 230. The third connecting port 1112 is connected to the first space 131 through the second space 132 and the first opening, so that the gas supplied by the gas supply device 240 can pressurize the liquid surface of the colorant 30 to force the colorant 30 into the inner cavity of the target fiber. In addition, it is less likely to cause problems such as difficulty or uneven filling of the colorant 30 in the target fiber due to the increased gas content of the colorant 30 caused by the gas supplied by the gas supply device 240. In addition, the positions of the second connecting port 1111 and the third connecting port 1112 are set flexibly. The second connecting port 1111 and the third connecting port 1112 can be set below the liquid level in the first chamber 130.

[0137] The first outer container 110 is a pressure-resistant container, capable of withstanding pressure changes from negative to positive. For example, the first outer container 110 can withstand pressure changes from vacuum to a pressure greater than or equal to 1 MPa.

[0138] For example, the first connection port 121 is located at the bottom of the first internal container 120.

[0139] For example, a material rack 140 is disposed within a first space 131 and is connected to a first internal container 120.

[0140] For example, filter 122 is detachably connected to first internal container 120.

[0141] In some examples, the first air pressure detection device 710 may be mounted on the first external container 110.

[0142] In some examples, the first liquid level detection device may be mounted on the first internal container 120.

[0143] In other examples, the first liquid level detection device may be located on top of the first external container 110.

[0144] In some examples, the first outer container 110 has a first viewing window.

[0145] Figure 4 This is a schematic diagram of a colorant storage device provided in an embodiment of this application.

[0146] like Figure 4As shown, in some possible embodiments, the colorant storage device 10 further includes a stirring mechanism 500. The stirring mechanism 500 is disposed in the second chamber 430 and is used to stir the colorant 30 stored in the second chamber 430.

[0147] In this way, the stirring mechanism 500 can expel the gas from the colorant 30 in the second chamber 430, thereby reducing the gas content of the colorant 30. This makes it less likely that the colorant 30 will have difficulty filling or unevenly filling the target fiber due to a high gas content. In addition, it can also mix the pigments that have settled due to long-term standing evenly, so as to facilitate uniform coloring of the target fiber.

[0148] In some examples, the gas discharged from the colorant 30 by stirring by the stirring mechanism 500 can be discharged from the second chamber 430 through the fifth communication port 4121.

[0149] In some possible implementations, the second container device 400 is a pressure-resistant container device capable of withstanding pressure changes from negative to positive. The colorant storage device 10 also includes a fourth switching valve 610, a fifth switching valve 620, and a second vacuum pump 630. A fifth connection port 4121 is connected to the fourth switching valve 610. The second container device 400 also has a sixth connection port 4111, which communicates with the second chamber 430. The sixth connection port 4111 is connected to one end of the fifth switching valve 620, and the other end of the fifth switching valve 620 is connected to the second vacuum pump 630. The second vacuum pump 630 is used to extract gas from the second chamber 430 through the open fifth switching valve 620 and the sixth connection port 4111.

[0150] In this way, the gas in the second chamber 430 is extracted by the second vacuum pump 630, which facilitates the discharge of the gas stirred by the stirring mechanism 500 from the colorant 30 from the second chamber 430. In addition, the second vacuum pump 630 can reduce the gas pressure in the second chamber 430 to a negative pressure, which is beneficial for drawing gas out of the colorant 30 during the stirring process of the stirring mechanism 500, thereby reducing the gas content of the colorant 30.

[0151] When the first switching valve 300, the fourth switching valve 610 and the fifth switching valve 620 are all closed, the second chamber 430 can be a sealed chamber.

[0152] When the first switch valve 300 is closed, the fourth switch valve 610 is closed, and the fifth switch valve 620 is open, the gas in the second chamber 430 can be extracted by the second vacuum pump 630 to reduce the gas pressure in the second chamber 430.

[0153] During the coloring process of hollow fiber material 20, the fourth switch valve 610 can be opened so that gas can enter and exit the second chamber 430 through the fifth connection port 4121. At this time, both the fifth switch valve 620 and the second vacuum pump 630 can be in the closed state.

[0154] The fourth switching valve 610 can be detachably connected to the gas collection device. During the coloring process of the hollow fiber material 20, the fifth connecting port 4121 can be detachably connected to the gas collection device through the fourth switching valve 610. After the coloring of the hollow fiber material 20 is completed, the gas collection device can be removed from the fourth switching valve 610.

[0155] The fourth switching valve 610 can be detachably connected to the colorant supply device. When it is necessary to add colorant 30 into the second chamber 430, the fifth communication port 4121 can be detachably connected to the colorant supply device through the fourth switching valve 610. After the colorant 30 has been added into the second chamber 430, the colorant supply device can be removed from the fourth switching valve 610.

[0156] In some possible implementations, the fiber dyeing apparatus further includes a second air pressure detection device 720 disposed within the second chamber 430, which is used to detect the air pressure within the second chamber 430.

[0157] This makes it easier to monitor the air pressure inside the second chamber 430, so as to control the fiber dyeing process based on the air pressure inside the second chamber 430.

[0158] In some possible implementations, the fiber coloring apparatus further includes a second liquid level detection device disposed within the second chamber 430, which is used to detect the liquid level of the colorant 30 within the second chamber 430.

[0159] This makes it easier to monitor the level of the colorant 30 in the second chamber 430, so as to control the fiber coloring process based on the level of the colorant 30 in the second chamber 430.

[0160] In some possible implementations, the second container device 400 may have a second observation window. This facilitates observation of the contents of the second chamber 430 from the outside of the second container device 400, and helps to obtain information such as the liquid level within the second chamber 430.

[0161] In some examples, the sixth connection port 4111 may be located at the top of the second container device 400, and the highest liquid level in the second chamber 430 may be below the sixth connection port 4111, making it difficult to draw the liquid in the second chamber 430 into the second vacuum pump 630.

[0162] In some possible embodiments, the second container device 400 includes a second outer container 410 and a second inner container 420. The second outer container 410 has a second chamber 430, and the second inner container 420 is disposed within the second chamber 430. The second chamber 430 includes a third space 431 located within the second inner container 420 and a fourth space 432 located outside the second inner container 420. The top of the second inner container 420 has a third opening, and the third space 431 and the fourth space 432 communicate through the third opening. The third space 431 is used to store liquid colorant 30, and a stirring mechanism 500 is disposed within the third space 431 for stirring the colorant 30 stored in the third space 431. The second inner container 420 has a fourth connecting port 421, which communicates with the third space 431. The second outer container 410 has a fifth connecting port 4121 and a sixth connecting port 4111, which communicates with the fourth space 432.

[0163] In this way, the third space 431 is connected to the fourth space 432 through the opening at the top of the third space, making it difficult for the colorant 30 loaded in the third space 431 to enter the fourth space 432. The sixth connecting port 4111 is connected to the third space 431 through the fourth space 432 and the third opening, making it difficult for the colorant 30 to be sucked into the second vacuum pump 630. In addition, the position of the sixth connecting port 4111 is relatively flexible; the sixth connecting port 4111 can be located below the liquid level in the second chamber 430.

[0164] The second outer container 410 is a pressure-resistant container that can withstand pressure changes from negative to positive.

[0165] For example, the fourth connection port 421 is located at the bottom of the second inner container 420.

[0166] In some examples, the second pressure detection device 720 may be mounted on the second external container 410.

[0167] In some examples, a second liquid level detection device may be installed on the second inner container 420.

[0168] In other examples, the second liquid level detection device may be located on top of the second external container 410.

[0169] In some examples, the second outer container 410 has a second viewing window.

[0170] Figure 5 This is an external schematic diagram from one perspective of a fiber dyeing device provided in an embodiment of this application. Figure 6 for Figure 5 An external schematic diagram of the fiber dyeing equipment provided in the image, from another perspective. Figure 7 This is a cross-sectional schematic diagram of a fiber coloring device provided in an embodiment of this application.

[0171] In some possible implementations, the first outer container 110 may be a can-shaped structure, and the first outer container 110 may include a first can body 111 and a first can lid 112. The top of the first can body 111 has a second opening, and the first can lid 112 is openable and closable and is attached to the top of the first can body 111, sealing the second opening. The first can body 111 and the first can lid 112 are used to form a first chamber 130, and the first inner container 120 is connected to the first can body 111.

[0172] In this way, the hollow fiber material 20 can be easily accessed and removed through the second opening. Furthermore, the first can lid 112 is attached to the top of the first can body 111, which facilitates the pressure resistance of the first outer container 110. Additionally, it also facilitates cleaning and maintenance of the first chamber 130.

[0173] For example, the first outer container 110 may be a first vacuum canister.

[0174] For example, the first can lid 112 can be detachably connected to the first can body 111, that is, the first can lid 112 can be completely removed from the first can body 111.

[0175] For example, the first outer container 110 also includes a first locking mechanism 113. The first can lid 112 and the first can body 111 are locked by the first locking mechanism 113. After the first locking mechanism 113 releases the locking of the first can lid 112 and the first can body 111, the first can lid 112 can be opened from the first can body 111, so that the hollow fiber material 20 can be taken out and put in through the second opening.

[0176] When the air pressure in the first chamber 130 is negative, the first can lid 112 is attracted to the first can body 111 by the negative pressure in the first chamber 130.

[0177] When the air pressure in the first chamber 130 is positive, the first can lid 112 and the first can body 111 are locked by the first locking mechanism 113, which can restrict the relative movement of the first can lid 112 and the first can body 111.

[0178] In some examples, the first can lid 112 can be detachably connected to the first can body 111 via the first locking mechanism 113.

[0179] In other examples, the first lid 112 may be hinged to the first can body 111.

[0180] In some examples, the material rack 140 can be connected to the first internal container 120 via a first lifting mechanism, which can lift the material rack 140 to facilitate the loading and unloading of the hollow fiber material 20.

[0181] For example, the first inner container 120 can be connected to the first tank 111 through the first support component, the first support component can penetrate the first tank 111, the first support component is fixed and sealed to the first tank 111, and the first support component can be supported by the bearing surface outside the first tank 111.

[0182] In some possible implementations, the second connection port 1111 and the third connection port 1112 are both located on the first tank body 111.

[0183] In this way, the second connecting port 1111 and the third connecting port 1112 will not shift with the opening and closing of the first can lid 112, which is conducive to the connection of the second switching valve 210, the third switching valve 220, the first vacuum pump 230 and the gas supply device 240 with the first external container 110.

[0184] For example, the second connection port 1111 and the third connection port 1112 are both located below the first opening, and the second connection port 1111 and the third connection port 1112 are both connected to the annular space between the side wall of the first tank 111 and the first internal container 120.

[0185] For example, the second connection port 1111 is located below the third connection port 1112.

[0186] For example, the first inner container 120 can be a trough-shaped structure, and the trough wall of the first inner container 120 is used to separate the first space 131 and the second space 132 to prevent the colorant 30 in the first space 131 from flowing into the second space 132.

[0187] For example, the first inner container 120 is located inside the first tank 111, and the first opening is located below the second opening.

[0188] In some possible implementations, the second outer container 410 may be a can-shaped structure, and may include a second can body 411 and a second can lid 412. The top of the second can body 411 has a fourth opening, and the second can lid 412 is openable and closable and is attached to the top of the second can body 411, sealing the fourth opening. The second can body 411 and the second can lid 412 are used to form a second chamber 430.

[0189] This facilitates cleaning and maintenance of the second chamber 430. Furthermore, the second lid 412 is attached to the top of the second tank body 411, which helps the second outer container 410 withstand pressure.

[0190] For example, the second outer container 410 may be a second vacuum tank.

[0191] For example, the second can lid 412 can be detachably connected to the second can body 411, that is, the second can lid 412 can be completely removed from the second can body 411.

[0192] For example, the second outer container 410 also includes a second locking mechanism 413, the second lid 412 and the second body 411 are locked by the second locking mechanism 413, and after the second locking mechanism 413 releases the locking of the second lid 412 and the second body 411, the second lid 412 can be opened from the second body 411.

[0193] When the air pressure in the second chamber 430 is negative, the second can lid 412 is attracted to the second can body 411 by the negative pressure in the second chamber 430.

[0194] When the air pressure in the second chamber 430 is positive, the second can lid 412 and the second can body 411 are locked by the second locking mechanism 413, which can restrict the relative movement of the second can lid 412 and the second can body 411.

[0195] In some examples, the second can lid 412 can be detachably connected to the second can body 411 via the second locking mechanism 413.

[0196] For example, the second inner container 420 can be connected to the second tank 411 through the second support component, the second support component can penetrate the second tank 411, the second support component is fixed and sealed to the second tank 411, and the second support component can be supported by the bearing surface outside the second tank 411.

[0197] In some possible implementations, the sixth connection port 4111 is located on the second tank body 411.

[0198] In this way, the sixth connecting port 4111 will not shift with the opening and closing of the second can lid 412, which facilitates the connection between the fifth switching valve 620 and the second vacuum pump 630 and the second external container 410.

[0199] For example, the sixth connecting port 4111 is located below the third opening, and the sixth connecting port 4111 communicates with the annular space between the side wall of the second tank 411 and the second inner container 420.

[0200] For example, a fifth connection port 4121 is provided on the second can lid 412.

[0201] For example, the second inner container 420 can be a groove-shaped structure, and the groove wall of the second inner container 420 is used to separate the third space 431 and the fourth space 432 to prevent the colorant 30 in the third space 431 from flowing into the fourth space 432.

[0202] For example, the second inner container 420 is located inside the second tank 411, and the third opening is located below the fourth opening.

[0203] Figure 8 This is a cross-sectional schematic diagram of another fiber coloring device provided in an embodiment of this application.

[0204] like Figure 8 As shown, and see Figures 5-7 In some examples, the colorant storage device 10 also includes a stirring motor 510, which can be mounted on the second can lid 412. The stirring motor 510 can be connected to the stirring mechanism 500 via a transmission rod 520, and the stirring motor 510 is used to drive the stirring mechanism 500 to rotate via the transmission rod 520.

[0205] In some examples, the colorant storage device 10 also includes a pressure relief valve 640 disposed on the second external container 410.

[0206] For example, the pressure relief valve 640 may be provided on the second tank cover 412.

[0207] In some possible implementations, the first internal container 120 is detachably connected to the first tank 111, and the first switch valve 300 is detachably connected to the first communication port 121.

[0208] In this way, when different colorants 30 are used for coloring, the corresponding first internal container 120 can be replaced to avoid different colorants 30 from affecting each other when loaded into the same first internal container 120. In addition, the first internal container 120 can be removed from the first tank 111 for inspection and cleaning, making the inspection and cleaning of the first internal container 120 relatively easy.

[0209] In some examples, the first inner container 120 may be detachably connected to a first support assembly to be detachably connected to the first tank 111 via the first support assembly.

[0210] In other examples, the first container device 100 may also include a second lifting mechanism disposed inside and connected to the first tank 111. The first inner container 120 is detachably connected to the second lifting mechanism. The first inner container 120 is detachably connected to the first tank 111 through the second lifting mechanism. The second lifting mechanism can lift the first inner container 120 to facilitate the installation and removal of the first inner container 120 inside the first tank 111.

[0211] In some possible embodiments, the fiber dyeing equipment further includes a first connecting pipe 310. The first tank 111 has a first through-hole, and the first connecting pipe 310 passes through the first through-hole and is sealed to the first tank 111. One end of the first connecting pipe 310 is located inside the first tank 111 and is detachably connected to the first communication port 121. The other end of the first connecting pipe 310 is located outside the first tank 111 and is connected to the first switching valve 300. The first switching valve 300 is detachably connected to the first communication port 121 through the first connecting pipe 310.

[0212] In this way, the first switching valve 300 is located outside the first chamber 130, and the performance of the first switching valve 300 is not affected by the air pressure changes inside the first chamber 130.

[0213] In some possible implementations, the second inner container 420 is detachably connected to the second tank 411, and the first switching valve 300 is detachably connected to the fourth connecting port 421.

[0214] In this way, when different colorants 30 are used for coloring, the corresponding second inner container 420 can be replaced to avoid different colorants 30 from interfering with each other when loaded into the same second inner container 420. In addition, the second inner container 420 can be removed from the second tank 411 for inspection and cleaning, making the inspection and cleaning of the second inner container 420 relatively easy.

[0215] In some examples, the second inner container 420 may be detachably connected to the second support assembly to be detachably connected to the second tank 411 via the second support assembly.

[0216] In other examples, the second container device 400 may also include a third lifting mechanism disposed inside and connected to the second tank 411. The second inner container 420 is detachably connected to the third lifting mechanism. The second inner container 420 is detachably connected to the second tank 411 through the third lifting mechanism. The third lifting mechanism can lift the second inner container 420 to facilitate the installation and removal of the second inner container 420 inside the second tank 411.

[0217] In some possible embodiments, the fiber dyeing equipment further includes a second connecting pipe 320. The second tank 411 has a second through-hole, and the second connecting pipe 320 passes through the second through-hole, being sealed to the second tank 411. One end of the second connecting pipe 320 is located inside the second tank 411 and detachably connected to a fourth communication port 421, while the other end is located outside the second tank 411 and connected to a first switching valve 300, which is detachably connected to the fourth communication port 421 via the second connecting pipe 320.

[0218] In this way, the first switching valve 300 is located outside the second chamber 430, and the performance of the first switching valve 300 is not affected by the air pressure changes in the second chamber 430.

[0219] In some possible implementations, the fifth connection port 4121 is located at the top of the second outer container 410, and the vertical projection of the fifth connection port 4121 is located within the vertical projection of the third opening.

[0220] This facilitates the injection of colorant 30 into the third space 431 through the fifth communication port 4121, eliminating the need for a separate communication port for injecting colorant 30.

[0221] Figure 9 This is a cross-sectional schematic diagram of another fiber dyeing device provided in an embodiment of this application.

[0222] like Figure 9 As shown, in some possible embodiments, a guide pipe 440 is provided in the second chamber 430. One end of the guide pipe 440 is connected to the fifth communication port 4121, and the other end of the guide pipe 440 is located in the third space 431. The fifth communication port 4121 is connected to the third space 431 through the guide pipe 440. The guide pipe 440 is located above the stirring mechanism 500.

[0223] This facilitates the injection of colorant 30 into the third space 431 through the fifth communication port 4121, and the colorant 30 injected into the second chamber 430 through the fifth communication port 4121 is less likely to flow into the fourth space 432.

[0224] Figure 10 This is a process flow diagram of a fiber coloring method provided in an embodiment of this application.

[0225] like Figure 10 As shown, this application embodiment also provides a fiber dyeing method, employing the fiber dyeing equipment in any of the above embodiments. The method includes the following steps:

[0226] S100: After the hollow fiber material 20 is loaded into the first chamber 130 of the fiber coloring equipment, the air pressure in the first chamber 130 is reduced to a first preset value by the air pressure regulating component 200 of the fiber coloring equipment. The openings at both ends of the target fiber of the hollow fiber material 20 are connected to the first chamber 130, and the first preset value is less than 1 standard atmosphere.

[0227] Thus, as the air pressure in the first chamber 130 decreases to the first preset value, the gas in the inner cavity of the target fiber is extracted, the air pressure in the inner cavity of the target fiber decreases, and the resistance caused by the gas in the inner cavity of the target fiber to the flow of the colorant 30 into the inner cavity of the target fiber is reduced.

[0228] For example, after the first can lid 112 is opened, hollow fiber material 20 is loaded into the first chamber 130 through the second opening. Before the first can lid 112 is opened, the first switch valve 300 is in the closed state. After the hollow fiber material 20 is loaded into the first chamber 130, the first can lid 112 is placed on the first can body 111, and the first can lid 112 seals the second opening.

[0229] For example, hollow fiber material 20 is loaded into the first space 131.

[0230] For example, after the first can lid 112 is attached to the first can body 111, the second switch valve 210 can be opened, the first switch valve 300 can be closed, and the first vacuum pump 230 can be turned on, so that the first vacuum pump 230 can extract the gas in the first chamber 130 to reduce the gas pressure in the first chamber 130 to a first preset value.

[0231] S200: After the air pressure in the first chamber 130 drops to the first preset value, the first switch valve 300 of the fiber coloring device is switched from the closed state to the open state so that the liquid colorant 30 enters the first chamber 130 through the first communication port 121 of the fiber coloring device.

[0232] Thus, after the first switch valve 300 is opened, the colorant 30 stored in the second chamber 430 can flow into the first chamber 130 under the attraction of the negative pressure in the first chamber 130, so as to realize the injection of the colorant 30 into the first chamber 130. During the process of gradually immersing the hollow fiber material 20, due to the pressure difference between the inner cavity of the target fiber and the first chamber 130, the colorant 30 will be pressed into the inner cavity of the target fiber, so that at least part of the inner cavity of the target fiber will be filled by the colorant 30.

[0233] For example, after the air pressure in the first chamber 130 drops to a first preset value, the second switching valve 210 and the first vacuum pump 230 are kept in the open state to maintain the air pressure in the first chamber 130 at the first preset value.

[0234] For example, colorant 30 enters the first space 131.

[0235] For example, when the first switching valve 300 is open, the fourth switching valve 610 is in the open state.

[0236] S300: After the hollow fiber material 20 loaded in the first chamber 130 is submerged in the colorant 30, the first switch valve 300 is switched from the open state to the closed state to stop the injection of colorant 30 into the first chamber 130.

[0237] S400: After the first switch valve 300 switches from the open state to the closed state, the air pressure in the first chamber 130 is increased to a second preset value by the air pressure regulating component 200, wherein the second preset value is greater than 1 standard atmosphere.

[0238] In this way, the pressure difference between the inner cavity of the target fiber and the first chamber 130 can be increased, which is conducive to further pressing the colorant 30 into the inner cavity of the target fiber to fill the part of the inner cavity of the target fiber that is not filled by the colorant 30. The larger pressure difference between the inner cavity of the target fiber and the first chamber 130 is conducive to the colorant 30 overcoming the resistance in the target fiber and filling the inner cavity of the target fiber.

[0239] For example, after the hollow fiber material 20 loaded in the first chamber 130 is immersed in the colorant 30, the first vacuum pump 230 and the second switch valve 210 can be turned off, and the third switch valve 220 and the gas supply device 240 can be turned on, so that the gas supply device 240 supplies gas into the first chamber 130 to increase the gas pressure in the first chamber 130 to a second preset value.

[0240] For example, the gas supplied by the gas supply device 240 to the first chamber 130 may be air or nitrogen.

[0241] S500: After the air pressure in the first chamber 130 is increased to the second preset value, the air pressure in the first chamber 130 is maintained at the second preset value for a preset time so that the inner cavity of the target fiber is filled with liquid colorant 30 to obtain colored fiber material intermediate.

[0242] This provides time for the liquid colorant 30 to flow within the target fiber, facilitating the filling of the inner cavity of the target fiber with the liquid colorant 30.

[0243] For example, after the air pressure in the first chamber 130 increases to the second preset value, the third switch valve 220 and the air supply device 240 can be closed to make the first chamber 130 a sealed state.

[0244] S600: Post-processing the colored fiber material intermediate to obtain the colored fiber material, wherein the colored fiber material includes the target fiber and the colorant 30, and the inner wall of the target fiber is covered by the colorant 30.

[0245] In this way, the air pressure in the first chamber 130 can be switched between positive and negative pressure by the air pressure regulating component 200, so as to extract the air in the inner cavity of the target fiber and provide greater pressure for the liquid colorant 30 to be injected into the inner cavity of the target fiber. This reduces the resistance caused by the gas in the inner cavity of the target fiber to the flow of the colorant 30 into the inner cavity of the target fiber, and also makes it easier for the colorant 30 to overcome the resistance in the target fiber and fill the inner cavity of the target fiber, so as to color each position of the target fiber and obtain a colored fiber material whose inner wall is covered by the colorant 30.

[0246] Those skilled in the art will understand that, due to factors such as curing shrinkage and overflow of colorant 30 during the post-processing of the colored fiber material intermediate, there is a certain degree of error in the coverage of the inner wall of the target fiber by colorant 30. For example, 95% or 98% of the inner wall of the target fiber is covered by colorant 30, etc., should be understood as the inner wall of the target fiber being covered by colorant 30.

[0247] In some possible implementations, the first preset value is less than 1 Pa.

[0248] This allows the gas inside the target fiber to be evacuated before the colorant 30 enters the inner cavity of the target fiber, so that the colorant 30 can fill the inner cavity of the target fiber.

[0249] In some possible implementations, the second preset value is greater than or equal to 0.2 MPa and less than or equal to 1 MPa.

[0250] This allows for a larger pressure difference between the inner cavity of the target fiber and the first chamber 130, which facilitates the filling of the inner cavity of the target fiber with the colorant 30. Furthermore, it also promotes safe operation of the equipment.

[0251] In some possible implementations, the preset time is greater than or equal to 30 minutes.

[0252] This provides sufficient time for the liquid colorant 30 to flow within the target fiber, facilitating the filling of the inner cavity of the target fiber with the liquid colorant 30.

[0253] In some possible implementations, the following step is included before step S200:

[0254] S700: The liquid colorant 30 stored in the second chamber 430 of the fiber coloring equipment is stirred by the stirring mechanism 500 of the fiber coloring equipment.

[0255] This allows the gas in the colorant 30 within the second chamber 430 to be expelled, reducing the gas content of the colorant 30 and preventing problems such as difficulty or uneven filling of the colorant 30 within the target fiber due to high gas content. Furthermore, it allows for the uniform mixing of pigments that have settled due to prolonged standing, facilitating uniform coloring of the target fiber.

[0256] In some possible implementations, the following step is included before step S200:

[0257] S800: Close the fourth switch valve 610 of the fiber coloring equipment, open the fifth switch valve 620 and the second vacuum pump 630 of the fiber coloring equipment, and reduce the air pressure in the second chamber 430 to a third preset value, wherein the third preset value is less than 1 standard atmosphere.

[0258] In this way, the gas in the second chamber 430 is extracted by the second vacuum pump 630, which facilitates the discharge of the gas stirred by the stirring mechanism 500 from the colorant 30 from the second chamber 430. In addition, the second vacuum pump 630 can reduce the gas pressure in the second chamber 430 to a negative pressure, which is beneficial for drawing gas out of the colorant 30 during the stirring process of the stirring mechanism 500, thereby reducing the gas content of the colorant 30.

[0259] For example, when the second vacuum pump 630 and the fifth switching valve 620 are turned on, the fourth switching valve 610 is in the closed state.

[0260] For example, after the stirring mechanism 500 has been stirring for a set time, the stirring mechanism 500, the second vacuum pump 630 and the fifth switch valve 620 can be closed, and the fourth switch valve 610 can be opened to adjust the air pressure in the second chamber 430 to a normal pressure state. After the air pressure in the second chamber 430 is adjusted to a normal pressure state, step S200 is then executed.

[0261] In some possible implementations, after step S500, the following step is also included:

[0262] S900: Switch the first switch valve 300 from the closed state to the open state, and use the air pressure in the first chamber 130 to discharge the colorant 30 in the first chamber 130 through the first connecting port 121.

[0263] This facilitates the removal of the colorant 30 after the hollow fiber material 20 has been colored, so that the colored fiber material intermediate can be easily removed.

[0264] For example, after the colorant 30 in the first chamber 130 is completely discharged, the first switch valve 300 can be switched from the open state to the closed state, and then the first can lid 112 can be opened to remove the colored fiber material intermediate from the first chamber 130 through the second opening.

[0265] For example, after the colorant 30 in the first chamber 130 is completely discharged, the second switch valve 210 can be opened to adjust the air pressure in the first chamber 130 to a normal pressure state.

[0266] For example, the colorant 30 discharged from the first chamber 130 is returned to the second chamber 430, and the colorant 30 returned to the second chamber 430 can be reused in the next coloring.

[0267] For example, step S600 may include: cleaning the surface of the colored fiber material intermediate to remove the colorant 30 from the surface of the colored fiber material intermediate.

[0268] In some possible implementations, colorant 30 is a resin-based colorant.

[0269] In this way, the resulting colored fiber materials are less prone to fading or discoloration.

[0270] When the colorant 30 is a resin-based colorant, step S600 includes curing the colorant 30.

[0271] Depending on the type of colorant 30, it can be cured by light curing or heat curing.

[0272] In some other possible embodiments, the colorant 30 is a water-based colorant. Step S600 includes sealing the openings at both ends of the target fiber of the colored fiber material intermediate.

[0273] In this way, the viscosity of the liquid colorant 30 is relatively low, which is beneficial for filling the inner cavity of the target fiber. In addition, the non-volatile nature of water-based colorants can easily cause fading and discoloration of colored fiber materials.

[0274] In some other possible implementations, step S600 may include drying the colored fiber material intermediate to allow the colorant 30 to adhere to the inner wall of the target fiber.

[0275] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0276] The devices or elements referred to in the embodiments of this application or implied herein must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of this application. In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0277] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the present application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0278] The term "multiple" in this article refers to two or more. The term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Furthermore, the character " / " in this article generally indicates an "or" relationship between the preceding and following related objects; in formulas, the character " / " indicates a "division" relationship between the preceding and following related objects.

[0279] It is understood that the various numerical designations used in the embodiments of this application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application.

[0280] It is understood that, in the embodiments of this application, the order of the above-mentioned process numbers does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

Claims

1. A fiber dyeing device, characterized in that, It includes a first container device (100), a pressure regulating assembly (200), and a first switching valve (300); The first container device (100) has a first chamber (130) for loading hollow fiber material (20) and liquid colorant (30) for the colorant (30) to immerse the hollow fiber material (20); The first container device (100) also has a first communication port (121), which is connected to the first chamber (130). The first communication port (121) is connected to one end of the first switching valve (300), and the other end of the first switching valve (300) is used to connect to the colorant storage device (10). The pressure regulating component (200) is connected to the first container device (100). The pressure regulating component (200) is used to regulate the pressure in the first chamber (130) so that the pressure in the first chamber (130) can be switched between positive and negative pressure.

2. The fiber dyeing equipment according to claim 1, characterized in that, The pressure regulating assembly (200) includes a second switching valve (210), a third switching valve (220), a first vacuum pump (230), and a gas supply device (240); The first container device (100) also has a second communication port (1111) and a third communication port (1112), both of which are connected to the first chamber (130); The second connection port (1111) is connected to one end of the second switch valve (210), and the other end of the second switch valve (210) is connected to the first vacuum pump (230). The first vacuum pump (230) is used to extract the gas in the first chamber (130) through the open second switch valve (210) and the second connection port (1111). The third connection port (1112) is connected to one end of the third switch valve (220), and the other end of the third switch valve (220) is connected to the gas supply device (240). The gas supply device (240) is used to supply gas into the first chamber (130) through the opened third switch valve (220) and the third connection port (1112).

3. The fiber dyeing equipment according to claim 2, characterized in that, The first container device (100) includes a first outer container (110) and a first inner container (120); The first outer container (110) has the first chamber (130) inside, and the first inner container (120) is disposed inside the first chamber (130); The first chamber (130) includes a first space (131) located inside the first inner container (120) and a second space (132) located outside the first inner container (120). The top of the first inner container (120) has a first opening. The first space (131) and the second space (132) are connected through the first opening. The first space (131) is used to load the hollow fiber material (20) and the liquid colorant (30) so that the colorant (30) can immerse the hollow fiber material (20). The first internal container (120) has the first communication port (121), which is connected to the first space (131); The first external container (110) has a second communication port (1111) and a third communication port (1112), both of which are connected to the second space (132).

4. The fiber dyeing equipment according to claim 3, characterized in that, The first external container (110) includes a first can body (111) and a first can lid (112); The first tank (111) has a second opening at the top, and the first can lid (112) is openable and closable and attached to the top of the first tank (111). The first can lid (112) seals the second opening. The first tank (111) and the first can lid (112) are used to form the first chamber (130). The first inner container (120) is connected to the first tank (111).

5. The fiber dyeing equipment according to claim 4, characterized in that, The second connecting port (1111) and the third connecting port (1112) are both located on the first tank (111).

6. The fiber dyeing equipment according to claim 4 or 5, characterized in that, The first internal container (120) is detachably connected to the first tank (111), and the first switch valve (300) is detachably connected to the first communication port (121).

7. The fiber dyeing equipment according to claim 6, characterized in that, It also includes a first connecting pipe (310); The first tank (111) has a first through hole, and the first connecting pipe (310) passes through the first through hole. The first connecting pipe (310) is sealed to the first tank (111). One end of the first connecting pipe (310) is located inside the first tank (111) and is detachably connected to the first communication port (121). The other end of the first connecting pipe (310) is located outside the first tank (111) and is connected to the first switch valve (300). The first switch valve (300) is detachably connected to the first communication port (121) through the first connecting pipe (310).

8. The fiber dyeing apparatus according to any one of claims 1-7, characterized in that, It also includes a material rack (140), which is disposed in the first chamber (130) and is used to fix the hollow fiber material (20).

9. The fiber dyeing apparatus according to any one of claims 1-8, characterized in that, A filter (122) is provided at the first connection port (121).

10. The fiber dyeing apparatus according to any one of claims 1-9, characterized in that, It also includes a first air pressure detection device (710), which is disposed in the first chamber (130) and is used to detect the air pressure in the first chamber (130).

11. The fiber dyeing apparatus according to any one of claims 1-10, characterized in that, It also includes the colorant storage device (10); The colorant storage device (10) includes a second container device (400); The second container device (400) has a second chamber (430) for storing the liquid colorant (30); The second container device (400) has a fourth connection port (421) and a fifth connection port (4121), both of which are connected to the second chamber (430). The fourth connection port (421) is connected to the first switch valve (300), and the fifth connection port (4121) is used to supply gas to enter and exit the second chamber (430).

12. The fiber dyeing equipment according to claim 11, characterized in that, The colorant storage device (10) also includes a stirring mechanism (500); The stirring mechanism (500) is disposed in the second chamber (430) and is used to stir the colorant (30) stored in the second chamber (430).

13. The fiber dyeing equipment according to claim 12, characterized in that, The colorant storage device (10) further includes a fourth switching valve (610), a fifth switching valve (620), and a second vacuum pump (630); The fifth communication port (4121) is connected to the fourth switching valve (610); The second container device (400) also has a sixth communication port (4111) that is connected to the second chamber (430). The sixth communication port (4111) is connected to one end of the fifth switching valve (620), and the other end of the fifth switching valve (620) is connected to the second vacuum pump (630). The second vacuum pump (630) is used to extract gas from the second chamber (430) through the open fifth switching valve (620) and the sixth communication port (4111).

14. The fiber dyeing equipment according to claim 13, characterized in that, The second container device (400) includes a second outer container (410) and a second inner container (420); The second outer container (410) has a second chamber (430), and the second inner container (420) is disposed within the second chamber (430); The second chamber (430) includes a third space (431) located inside the second inner container (420) and a fourth space (432) located outside the second inner container (420). The top of the second inner container (420) has a third opening. The third space (431) and the fourth space (432) are connected through the third opening. The third space (431) is used to store the liquid colorant (30). The stirring mechanism (500) is disposed in the third space (431) and is used to stir the colorant (30) stored in the third space (431). The second internal container (420) has the fourth communication port (421), which is connected to the third space (431); The second external container (410) has the fifth communication port (4121) and the sixth communication port (4111), the sixth communication port (4111) being connected to the fourth space (432).

15. The fiber dyeing equipment according to claim 14, characterized in that, The fifth connecting port (4121) is located at the top of the second outer container (410), and the projection of the fifth connecting port (4121) in the vertical direction is located within the projection of the third opening in the vertical direction.

16. The fiber dyeing apparatus according to claim 14 or 15, characterized in that, The second chamber (430) is provided with a guide pipe (440), one end of which is connected to the fifth communication port (4121), and the other end of which is located in the third space (431). The fifth communication port (4121) is connected to the third space (431) through the guide pipe (440), and the guide pipe (440) is located above the stirring mechanism (500).

17. The fiber dyeing apparatus according to any one of claims 14-16, characterized in that, The second external container (410) includes a second tank body (411) and a second tank lid (412); The second tank (411) has a fourth opening at the top, and the second can lid (412) is openable and closable on the top of the second tank (411). The second can lid (412) seals the fourth opening. The second tank (411) and the second can lid (412) are used to form the second chamber (430). The second inner container (420) is detachably connected to the second tank (411), and the first switch valve (300) is detachably connected to the fourth communication port (421).

18. A fiber dyeing method, characterized in that, The fiber dyeing apparatus according to any one of claims 1-17 includes the following steps: After the hollow fiber material (20) is loaded into the first chamber (130) of the fiber coloring device, the air pressure in the first chamber (130) is reduced to a first preset value by the air pressure regulating component (200) of the fiber coloring device. The hollow fiber material (20) includes a target fiber, which is a tubular hollow fiber. The openings at both ends of the target fiber are connected to the first chamber (130). The first preset value is less than 1 standard atmosphere. After the air pressure in the first chamber (130) drops to the first preset value, the first switch valve (300) of the fiber coloring device is switched from the closed state to the open state so that the liquid colorant (30) enters the first chamber (130) through the first communication port (121) of the fiber coloring device. After the hollow fiber material (20) loaded in the first chamber (130) is submerged in the colorant (30), the first switch valve (300) is switched from the open state to the closed state. After the first switch valve (300) switches from the open state to the closed state, the air pressure in the first chamber (130) is increased to a second preset value by the air pressure regulating component (200), wherein the second preset value is greater than 1 standard atmosphere; After the air pressure in the first chamber (130) is increased to the second preset value, the air pressure in the first chamber (130) is kept at the second preset value for a preset time so that the inner cavity of the target fiber is filled with the liquid colorant (30) to obtain a colored fiber material intermediate. The colored fiber material intermediate is post-processed to obtain the colored fiber material, wherein the colored fiber material includes the target fiber and the colorant (30), and the inner wall of the target fiber is covered by the colorant (30).

19. The method according to claim 18, characterized in that, The first preset value is less than 1 Pa.

20. The method according to claim 18 or 19, characterized in that, The second preset value is greater than or equal to 0.2 MPa and less than or equal to 1 MPa.

21. The method according to any one of claims 18-20, characterized in that, The preset time is greater than or equal to 30 minutes.

22. The method according to any one of claims 18-21, characterized in that, Before switching the first switching valve (300) of the fiber dyeing device from the closed state to the open state, so that the liquid colorant (30) enters the first chamber (130) through the first communication port (121) of the fiber dyeing device, the method further includes the following steps: The liquid colorant (30) stored in the second chamber (430) of the fiber coloring device is stirred by the stirring mechanism (500) of the fiber coloring device.

23. The method according to claim 22, characterized in that, Before switching the first switching valve (300) of the fiber dyeing device from the closed state to the open state, so that the liquid colorant (30) enters the first chamber (130) through the first communication port (121) of the fiber dyeing device, the method further includes the following steps: Close the fourth switch valve (610) of the fiber coloring device, open the fifth switch valve (620) and the second vacuum pump (630) of the fiber coloring device, and reduce the air pressure in the second chamber (430) to a third preset value, wherein the third preset value is less than 1 standard atmosphere.

24. The method according to any one of claims 18-23, characterized in that, After maintaining the air pressure in the first chamber (130) at the second preset value for a preset time to fill the inner cavity of the target fiber with the liquid colorant (30) to obtain a colored fiber material intermediate, the method further includes the following steps: Switch the first switch valve (300) from the closed state to the open state, and use the air pressure in the first chamber (130) to discharge the colorant (30) in the first chamber (130) through the first communication port (121).

Images