Dyeing apparatus with filtering function

Abstract

The utility model discloses a dyeing device with filter function, its characterized in that, including dyeing tank, dye liquor pipeline and filter component, dye liquor pipeline one end communicates with the bottom of dyeing tank, and after returning dyeing tank after filter component, filter component communicates with dye liquor pipeline and is used for filtering the impurity in dye liquor pipeline, including the filter element and fine filter piece that connect in proper order, and the filter element includes at least one conical filter screen, the utility model discloses the conical filter screen structure in the filter element is introduced, utilizes its inclined plane configuration to make big granule impurity slide along gravity, has greatly reduced the risk of filter screen blockage, has strengthened the continuous operation ability of equipment, has prolonged the maintenance cycle.

Description

Technical Field

[0001] This utility model relates to the field of printing and dyeing, and in particular to a dyeing device with a filtering function. Background Technology

[0002] In existing dyeing and finishing equipment technology, recycling dye liquor is a common energy-saving and consumption-reducing method, widely used in the textile printing and dyeing industry. However, during the use of dye liquor, due to factors such as fibers shed from the fabric, pigment sedimentation, and auxiliary agent residues, a large number of particulate impurities, colloids, and fine suspended matter are often mixed in the dye liquor. If these impurities are not removed in time, they will not only affect the uniformity of dyeing, leading to quality problems such as color spots and color differences in the fabric, but also easily clog pipelines, nozzles, valves, and other parts, reducing equipment operating efficiency, and even causing equipment failure and increasing maintenance costs.

[0003] Therefore, existing technologies commonly incorporate filtration components in dye liquor circulation pipelines, with common forms including mesh filters, cartridge filters, and sedimentation filters. Among these, mesh filters are widely used due to their simple construction and ease of cleaning. However, traditional flat mesh filters are prone to clogging when faced with high-concentration, high-viscosity dye liquors or large particulate impurities, leading to a rapid decline in filtration efficiency and requiring frequent shutdowns for cleaning, severely impacting continuous production. Even with multi-layer cartridge filters, problems such as short cartridge replacement cycles and high operating costs persist. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a dyeing device with a filtration function, thereby solving the problem of easy clogging of the filtration component in the dyeing device.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A dyeing apparatus with filtration function includes a dyeing tank, dye liquor pipeline and a filtration assembly;

[0007] One end of the dye solution pipeline is connected to the bottom of the dyeing tank, and the other end returns to the dyeing tank after passing through the filter assembly.

[0008] The filtration assembly is connected to the dye liquor pipeline and is used to filter impurities in the dye liquor pipeline. It includes a coarse filter element and a fine filter element connected in sequence. The coarse filter element includes at least one conical filter screen.

[0009] In some embodiments, the coarse filter element further includes a rotating shaft and a first driving member; the rotating shaft is connected to the apex of the conical filter screen; the first driving member is drivenly connected to the rotating shaft and is used to control the rotation of the rotating shaft.

[0010] In some embodiments, the coarse filter element further includes a collection box connected to the bottom end of the conical filter screen.

[0011] In some embodiments, the collection box is a ring-shaped collection box.

[0012] In some embodiments, the collection box includes at least one inlet pipe and at least one outlet pipe.

[0013] In some embodiments, the coarse filter element further includes a scraper that is rotatably connected to the conical filter screen and at least partially abuts against the conical filter screen.

[0014] In some embodiments, the scraper is provided with an elastic support mechanism for adjusting its contact pressure with the conical filter screen.

[0015] In some embodiments, the bottom edge of the conical filter screen has a flanged structure.

[0016] In some embodiments, the fine filter element comprises a multilayer filter membrane structure, with the filtration precision of each layer increasing sequentially.

[0017] The beneficial effects of this utility model are as follows: It provides a dyeing device with a filtration function. The key is that the dye liquor is drawn from the bottom of the dyeing tank, passes through a filtration assembly equipped with coarse and fine filter elements, and then flows back into the dyeing tank. This combined coarse and fine filtration method effectively removes large particulate impurities, preventing equipment blockage. Furthermore, the fine filter element further purifies the dye liquor, improving its quality and enhancing the color uniformity and quality stability of the dyed products. In particular, the introduction of a conical filter structure in the coarse filter element, utilizing its inclined surface, allows large particulate impurities to slide off due to gravity, greatly reducing the risk of filter blockage, enhancing the continuous operation capability of the equipment, and extending the maintenance cycle. Attached Figure Description

[0018] Figure 1 This is an assembly diagram of a dyeing device with a filtering function in one embodiment.

[0019] Figure 2 This is a cross-sectional view of a dyeing device with a filtering function in one of the embodiments;

[0020] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0021] Figure 4 This is a schematic diagram showing the cooperation between the scraper and the conical filter screen;

[0022] Figure 5 Another schematic diagram showing the cooperation between the scraper and the conical filter screen;

[0023] Label Explanation:

[0024] 1. Dyeing tank; 2. Dye liquor pipeline; 3. Filter assembly; 31. Coarse filter element; 311. Conical filter screen; 3111. Flanged structure; 312. Rotating shaft; 313. First driving component; 314. Collection box; 3141. Water inlet pipeline; 3142. Sewage discharge pipeline; 315. Scraper; 32. Fine filter element. Detailed Implementation

[0025] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0026] Please refer to Figures 1 to 3 A dyeing device with filtration function includes a dyeing tank 1, a dyeing liquid pipeline 2, and a filter assembly 3.

[0027] One end of the dyeing solution pipeline 2 is connected to the bottom of the dyeing tank 1, and the other end returns to the dyeing tank 1 after passing through the filter assembly 3;

[0028] The filter assembly 3 is connected to the dyeing liquid pipeline 2 and is used to filter impurities in the dyeing liquid pipeline 2. It includes a coarse filter element 31 and a fine filter element 32 connected in sequence. The coarse filter element 31 includes at least one conical filter screen 311.

[0029] As described above, the beneficial effects of this utility model are as follows: It provides a dyeing device with a filtration function, the key of which is to draw the dye liquor from the bottom of the dyeing tank 1, pass it through the filter assembly 3 equipped with a coarse filter element 31 and a fine filter element 32, and then return it to the dyeing tank 1. This structure effectively forms a closed-loop filtration circulation system. Through the combination of coarse and fine filtration, large particulate impurities can be effectively removed to prevent equipment blockage. On the other hand, the fine filter element 32 further purifies the dye liquor, improves the quality of the dye liquor, and is conducive to improving the color uniformity and quality stability of the dyed products. In particular, the introduction of a conical filter screen 311 structure in the coarse filter element 31, with its inclined surface structure, allows large particulate impurities to slide off under gravity, greatly reducing the risk of filter screen blockage, enhancing the continuous operation capability of the equipment, and extending the maintenance cycle.

[0030] Please refer to Figure 2 and Figure 3 In some embodiments, the coarse filter element 31 further includes a rotating shaft 312 and a first driving member 313; the rotating shaft 312 is connected to the apex of the conical filter screen 311; the first driving member 313 is connected to the rotating shaft 312 in a transmission manner and is used to control the rotation of the rotating shaft 312.

[0031] As described above, the addition of a rotating shaft 312 and a driving device to the conical filter screen 311 enables the filter screen to rotate. This structure generates centrifugal force during the rotation of the filter screen, thereby assisting impurities to be thrown outwards or slide downwards, accelerating the separation speed of impurities from the filter screen. Combined with the gravity sliding characteristics of the conical filter screen 311 itself, this dual effect significantly improves filtration efficiency and effectively inhibits impurity adhesion, further reducing the probability of clogging.

[0032] In some embodiments, the coarse filter element 31 further includes a collection box 314, which is connected to the bottom end of the conical filter screen 311.

[0033] As described above, the addition of a collection box 314 connected to the bottom of the conical filter 311 allows for the centralized collection of impurities filtered out during the filtration process. This facilitates subsequent periodic cleaning and treatment, prevents secondary contamination or impurity backflow, and improves the hygiene and ease of maintenance of the dye liquor filtration system. This structure, combined with the natural sliding direction of the conical filter 311, allows impurities to be automatically guided to the collection position, reducing the frequency of manual intervention.

[0034] In some embodiments, the collection box 314 is an annular collection box 314.

[0035] As described above, designing the collection box 314 as a ring structure fully utilizes the space around the bottom of the conical filter 311, achieving uniform collection of impurities that slide down from the sides. Compared to a conventional box-shaped structure, the ring-shaped collection box 314 fits the shape of the bottom of the filter more closely, preventing impurities from scattering into the equipment before being fully guided into the box. Furthermore, the ring structure facilitates a compact layout in situations with limited installation space, improving the integration of the device and the overall integration of the filtration system.

[0036] Specifically, the collection box 314 has an annular structure with a rectangular or U-shaped cross-section, surrounding the bottom edge of the conical filter screen 311. To ensure a proper fit, the inner diameter of the annulus is slightly larger than the outer diameter of the bottom edge of the filter screen, and it is connected to the filter screen support via snaps or threads. After sliding through the conical surface, impurities are evenly guided radially into the cavity of the annular collection box 314. This annular structure distributes impurities near multiple drain ports within a 360-degree range, helping to balance the drain load and avoid localized blockages. The annular collection box 314 may have an anti-backflow structure (such as a guide plate or an integrated mesh) to prevent backflow into the filter chamber, ensuring the unidirectional and closed nature of the filtration path.

[0037] In some embodiments, the collection box 314 includes at least one inlet pipe 3141 and at least one outlet pipe 3142.

[0038] As described above, by installing an inlet pipe 3141 and a drain pipe 3142 on the collection box 314, the separation, sedimentation, and automatic discharge of impurities can be achieved, improving the system's automation level. The inlet pipe 3141 can be used to periodically introduce cleaning fluid or water flow to flush the inner wall, preventing long-term accumulation and scaling. The drain pipe 3142 facilitates the centralized discharge of collected impurities, reducing the frequency of manual cleaning and preventing operators from coming into contact with harmful dyes or sediment, thus enhancing safety.

[0039] Preferably, the collection box 314 has multiple interfaces on its side wall, one or more of which serve as water inlets connected to an external cleaning pump or dye liquor replenishment system. When cleaning is required, these inlets can be opened via a control valve, allowing the cleaning liquid to flow along the annular path of the collection box 314, flushing away dye liquor residue adhering to the inner wall. Additionally, at least one drain pipe 3142 is provided, connected to a wastewater recovery system or waste liquid storage tank, to remove deposited impurities by gravity or pump suction. Check valves and solenoid control valves can be installed between the inlet and outlet pipes to prevent backflow and ensure reliable operation of the automatic control system. This structure can be integrated into the overall operating system via a programmable control module to achieve timed or sensor-based cleaning and draining functions.

[0040] Please refer to Figure 4 and Figure 5 In some embodiments, the coarse filter element 31 further includes a scraper 315, which is rotatably connected to the conical filter screen 311 and at least partially abuts against the conical filter screen 311.

[0041] As described above, the scraper 315 on the conical filter screen 311, maintaining at least partial contact, allows for physical cleaning of the filter surface as the screen rotates. This is particularly effective in removing viscous or easily adhered dye liquor impurities (such as fibers and colloidal residues). This structure solves the problem that gravity and centrifugal force alone are insufficient to completely remove impurities, further improving filtration efficiency and maintaining stable filtration accuracy.

[0042] Preferably, the scraper 315 is disposed on the outside of the conical filter screen 311, arranged along the surface of the filter screen, and can be made of a flexible material (such as polytetrafluoroethylene or silicone) to scrape the filter screen without damaging it. A rotating connector (such as a bushing or universal joint) is provided between the scraper 315 and the filter screen, allowing the scraper 315 to slide and swing within a certain range on the conical surface to adapt to different positions of the filter screen. When the conical filter screen 311 rotates, the scraper 315 slides and wipes the surface of the filter screen, scraping off attached particles or flocs, causing them to detach from the filter screen and enter the collection area. This structure is particularly suitable for processing high-concentration or high-viscosity dye liquors, and can significantly extend the continuous operating time of the equipment.

[0043] In some embodiments, the scraper 315 is provided with an elastic support mechanism for adjusting its contact pressure with the conical filter screen 311.

[0044] As described above, the elastic support mechanism on the scraper 315 allows for dynamic adjustment of the contact pressure, ensuring it adheres well to the filter screen surface while preventing fatigue or even damage to the filter screen structure due to excessive contact. This pressure adjustment mechanism also adapts to different batches of dye liquor, impurity concentrations, and filter screen wear conditions, enabling long-term stable operation.

[0045] Preferably, the scraper 315 is connected to the bracket via an elastic support structure, which can take the form of a spring, rubber shock absorber, or air bladder. This structure maintains appropriate pressure during filter rotation and provides a buffering function. At different stages of use, the elastic mechanism can adjust the pressure via a screw clamping mechanism, an electrically controlled push rod, or a pneumatic pressure regulator. For example, when the detection system detects a decrease in filter rotation speed or abnormal vibration of the scraper 315, it can automatically increase or decrease pressure for precise control. This structure not only improves the adaptability of the scraper 315 to impurity removal but also reduces mechanical wear and energy consumption during equipment operation.

[0046] In some embodiments, the bottom edge of the conical filter 311 is provided with a flange structure 3111.

[0047] As can be seen from the above description, the flange structure 3111 at the bottom edge of the conical filter 311 helps to effectively guide the slipping dye liquor into the circulation pipeline, avoids the phenomenon of dye liquor flowing into the collection box 314 and being accidentally discharged, and improves the utilization rate of dye liquor.

[0048] In some embodiments, the fine filter element 32 includes a multilayer filter membrane structure, with the filtration accuracy of each filter membrane increasing sequentially.

[0049] As described above, by employing a multi-layered filter membrane structure with progressively increasing filtration precision in the fine filter element 32, graded filtration can be achieved. Each filter membrane intercepts impurities with different particle sizes, forming a gradient filtration path and preventing impurities from accumulating in a single layer and causing blockage. Simultaneously, layer-by-layer filtration also helps extend the service life of each filter membrane, improving the overall system's filtration throughput and precision control capabilities.

[0050] Preferably, the fine filter element 32 is positioned behind the coarse filter element 31, employing a stacked filter cartridge or filter sheet structure. Each filter membrane layer has a specific pore size, such as 80 micrometers for the first layer, 40 micrometers for the second layer, and 10 micrometers for the third layer. The filter membrane material can be made of polypropylene, PTFE, or stainless steel mesh, materials resistant to dye liquor corrosion. The installation method can be a detachable or cartridge filter structure, facilitating periodic replacement or backwashing. This structure enables deep filtration of smaller particles, colloidal substances, and microfibers in the dye liquor, making it particularly suitable for fine dyeing and finishing processes with extremely high requirements for the finished product.

[0051] Please refer to Figures 1 to 5 Embodiment 1 of this utility model is as follows:

[0052] A dyeing device with filtration function is used in the printing and dyeing process to purify circulating dye liquor in real time. The device includes: a dyeing tank 1, a dye liquor pipeline 2, and a filter assembly 3.

[0053] The dyeing tank 1 is used to hold dye liquor and fabric to be dyed. The bottom of the tank is provided with an outlet, which is connected to the filter assembly 3 through the dye liquor pipeline 2. The outlet is used to draw out the dye liquor in the tank and return it to the dyeing tank 1 after filtration to form a circulation loop.

[0054] The filter assembly 3 is provided with a coarse filter element 31 and a fine filter element 32 in sequence along the flow direction of the dye liquor. The coarse filter element 31 includes a conical filter screen 311, a rotating shaft 312, a first driving element 313, a scraper 315, an elastic support mechanism, and a collection box 314. The fine filter element 32 is a multi-layer progressive pore size filter membrane structure.

[0055] Specifically, the coarse filter element 31 uses a conical filter screen 311 as the primary filtration medium. The filter screen is arranged in a conical shape, with its top facing the incoming flow direction and its large end facing downwards, and is fixed to the filter screen support frame. It is used to initially intercept large particulate impurities in the dye liquor. The top of the filter screen is connected to a rotating shaft 312, which is supported in the device housing by a bearing assembly and driven by a first driving component 313 (such as an electric motor) to achieve rotation. During the rotation of the filter screen, radial centrifugal force is generated, which helps to throw out impurities attached to the surface of the filter screen, further reducing the probability of clogging.

[0056] To further enhance the cleaning effect, a scraper 315 structure is provided on the outer wall of the conical filter screen 311. The scraper 315 abuts against the outer surface of the filter screen, and its support is mounted on the outer frame of the equipment via an elastic support mechanism, providing adjustable contact pressure. The elastic support mechanism may include a spring or an air bladder device, which can be manually or electrically adjusted to ensure that the scraper 315 maintains a proper fit as the filter screen rotates, promptly removing attached impurities and maintaining the permeability of the filter screen.

[0057] The bottom of the conical filter screen 311 features an integrated flange structure 3111, with the flange extending outward to form a liquid-retaining ring. This ring guides residual liquid back into the pipeline instead of entering the collection box 314 along with impurities. An annular collection box 314 is connected to the outer bottom of the conical filter screen 311. The collection box 314 has a rectangular cross-section and uniformly surrounds the filter screen circumferentially. The collection box 314 receives particulate impurities that fall after being processed by the filter screen and scraper 315, and is equipped with multiple inlets and outlets: the inlets connect to the cleaning fluid pipeline for periodically rinsing the inner wall of the box; the outlets connect to the wastewater treatment module for automatic discharge of sediment. The inlets and outlets are equipped with check valves, solenoid valves, and other components, enabling programmed control and supporting timed cleaning or contamination threshold triggering.

[0058] Downstream of the coarse filter element 31, a fine filter element 32 is provided as a high-precision filtration structure. The fine filter element 32 adopts a multi-layer membrane structure, with progressively smaller pore sizes between the membranes, decreasing from 80μm to 10μm. Each membrane layer is made of corrosion-resistant materials such as polypropylene fiber membranes, PTFE membranes, and stainless steel microporous membranes. The filter element is removable and replaceable, suitable for backwashing or replacement operations. This graded membrane filtration system can effectively remove impurities such as microparticles, fine fibers, and colloids from the dyeing liquor, ensuring the cleanliness of the dyeing liquor when it is returned to the dyeing tank 1.

[0059] The above structures together constitute a complete dye liquor filtration and circulation system. The dye liquor is drawn from the bottom of dyeing tank 1, filtered sequentially through coarse and fine filtration sections, and then returned to dyeing tank 1 for the next dyeing cycle. This system effectively avoids problems such as clogging and uneven coloring caused by the accumulation of impurities in the dye liquor, extends the service life of the dye liquor, reduces the frequency of replacement, thereby reducing dye and water consumption and improving dyeing quality and process stability. The device has a compact structure, a high degree of automation, and is suitable for various continuous or intermittent dyeing and finishing production lines, especially for high-end textile processing processes with high requirements for dye liquor cleanliness and consistency.

[0060] In summary, the dyeing device with filtration function provided by this utility model achieves efficient removal of impurities of different particle sizes in the dye liquor by setting a filtration assembly composed of coarse and fine filter elements in the dye liquor circulation path, significantly improving the cleanliness of the dye liquor and the dyeing quality. The conical filter structure in the coarse filter element, combined with gravity sliding and centrifugal action, reduces the risk of filter clogging; together with the scraper and elastic support mechanism, it continuously removes attached impurities and keeps the filtration unobstructed.

[0061] In addition, the annular collection box can collect fallen impurities and, combined with the inlet and outlet pipes, has automatic cleaning and sewage discharge functions, improving the system's ease of maintenance and automation level. The fine filter adopts a multi-layer progressive structure to achieve deep filtration of particulate impurities, effectively extending the service life of the dye liquor and reducing the frequency of replacement.

[0062] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A dyeing apparatus with a filtering function, characterized in that, Includes dyeing tank, dye liquor pipeline and filter assembly; One end of the dye solution pipeline is connected to the bottom of the dyeing tank, and the other end returns to the dyeing tank after passing through the filter assembly. The filtration assembly is connected to the dye liquor pipeline and is used to filter impurities in the dye liquor pipeline. It includes a coarse filter element and a fine filter element connected in sequence. The coarse filter element includes at least one conical filter screen.

2. The dyeing device with filtering function according to claim 1, characterized in that, The coarse filter element further includes a rotating shaft and a first driving member; the rotating shaft is connected to the apex of the conical filter screen; the first driving member is connected to the rotating shaft for transmission and is used to control the rotation of the rotating shaft.

3. A dyeing device with a filtering function according to claim 2, characterized in that, The coarse filter element also includes a collection box, which is connected to the bottom end of the conical filter screen.

4. A dyeing apparatus with a filtering function according to claim 3, characterized in that, The collection box is a ring-shaped collection box.

5. A dyeing apparatus with a filtering function according to claim 4, characterized in that, The collection box includes at least one inlet pipe and at least one outlet pipe.

6. A dyeing apparatus with a filtering function according to claim 3, characterized in that, The bottom edge of the conical filter screen has a flanged structure.

7. A dyeing apparatus with a filtering function according to claim 1, characterized in that, The coarse filter element also includes a scraper, which is rotatably connected to the conical filter screen and at least partially abuts against the conical filter screen.

8. A dyeing apparatus with a filtering function according to claim 7, characterized in that, The scraper is provided with an elastic support mechanism for adjusting the contact pressure between it and the conical filter screen.

9. A dyeing apparatus with a filtering function according to claim 1, characterized in that, The fine filter element comprises a multi-layered filter membrane structure, with the filtration precision of each layer increasing sequentially.

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