An ink recovery device

Abstract

The utility model provides a kind of ink recovery device, it includes inkjet along ink flow path sequentially arranged, recovery tank, recovery pump, first filter, ink container, ink supply pump, second filter and ink cartridge, inkjet includes nozzle and nozzle mounting seat, nozzle mounting seat has inkjet cavity and located in the recovery cavity and air inlet cavity of inkjet cavity opposite two sides, air inlet cavity is configured as the high-pressure gas that is blown to the inkjet end of nozzle with the directional airflow of inhaled, and residual ink of inkjet end is swept to recovery cavity, recovery cavity is connected with recovery tank.This ink recovery device of the utility model not only realizes ink recycling, but also realizes nozzle self-cleaning function, avoids the operation requirement of traditional manual wiping.

Description

Technical Field

[0001] This utility model belongs to the technical field of recycling devices, specifically relating to an ink recycling device. Background Technology

[0002] In the field of inkjet printing or coding equipment, the design of the ink recovery system directly affects the economics of equipment operation and the stability of print quality. Currently, the industry's prevalent technical bottlenecks are mainly reflected in the following two aspects: First, conventional printhead maintenance uses periodic ink pressing, which involves applying high pressure to force out the ink accumulated in the nozzles. While this solution achieves nozzle cleaning, it inevitably results in a significant waste of ink. Second, for the treatment of residual ink on the printhead surface, the mainstream process still relies on manual wiping. This method has significant technical drawbacks: on the one hand, the uncertainty in the operator's pressure control can easily cause mechanical damage to the precision coating on the printhead surface, significantly shortening the printhead's lifespan; on the other hand, the fibrous residue that may be generated from the wiping material can clog the nozzles, affecting inkjet accuracy.

[0003] In existing technologies, such as the ink recycling device disclosed in patent CN213891839U, although ink recycling and reuse have been achieved to a certain extent, they still cannot get rid of the dependence on manual ink wiping operations in practical applications and have failed to fundamentally solve the risk of human damage during printhead maintenance. Utility Model Content

[0004] The purpose of this invention is to provide a novel ink recovery device that can not only recover ink but also clean residual ink from the printhead surface without requiring manual wiping.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An ink recovery device includes an inkjet printer, a recovery tank, a recovery pump, a first filter, an ink storage container, an ink supply pump, a second filter, and an ink cartridge arranged sequentially along the ink flow path.

[0007] The inkjet printer includes a printhead and a printhead mounting base. The printhead mounting base has an inkjet chamber and a recovery chamber and an air inlet chamber located on opposite sides of the inkjet chamber.

[0008] The printhead is disposed inside the inkjet chamber;

[0009] The air intake chamber is configured to allow the incoming high-pressure gas to form a directional airflow that blows towards the inkjet end of the printhead and sweeps residual ink from the inkjet end to the recovery chamber. It includes a first air intake channel, a second air intake channel, and a third air intake channel arranged sequentially along the gas flow path.

[0010] The first air intake channel is connected to a high-pressure air source.

[0011] The cross-sectional area of ​​the second air intake channel is larger than that of the first air intake channel to form a gas buffer section, thereby ensuring uniform pressure throughout the cavity.

[0012] The third air intake channel extends in a direction perpendicular to the second air intake channel, and its end opening faces the front inlet of the recovery chamber to form an L-shaped airflow deflection structure.

[0013] The recycling chamber is connected to the recycling tank.

[0014] In some embodiments, the printhead mounting base includes a mounting base body, a first baffle, and a second baffle. The mounting base body has an inwardly recessed region, and the inkjet chamber, the recovery chamber, and the air inlet chamber are formed within the recessed region. The first baffle is mounted on the recessed region where the air inlet chamber is located, and together with the inner wall of the recessed region, defines the third air inlet channel. The second baffle is mounted on the recessed region where the recovery chamber is located, and together with the inner wall of the recessed region, defines the complete collection space forming the recovery chamber.

[0015] In some preferred embodiments, the second baffle extends toward the air intake chamber and, together with the inner wall of the recessed area, forms a recovery section located directly below the bottom of the inkjet chamber. Further, the second baffle is L-shaped.

[0016] In some embodiments, the mating surface between the first baffle and the mounting base body is provided with a first sealing structure, and the mating surface between the second baffle and the mounting base body is provided with a second sealing structure. The first sealing structure and the second sealing structure include, but are not limited to, sealing rings.

[0017] In some embodiments, the end opening of the third air intake passage is a slit-shaped opening.

[0018] In some embodiments, the outlet end of the recycling tank is connected to the inlet end of the recycling pump via a first recycling pipeline, the outlet end of the recycling pump is connected to the inlet end of the first filter via a second recycling pipeline, the outlet end of the first filter is connected to the inlet end of the ink storage container via a third recycling pipeline, the inlet end of the ink supply pump is connected to the bottom of the ink storage container via a first ink supply pipeline, the outlet end of the ink supply pump is connected to the inlet end of the second filter via a second ink supply pipeline, the outlet end of the second filter is connected to the inlet end of the ink cartridge via a third ink supply pipeline, and the outlet end of the ink cartridge is connected to the printhead via a fourth ink supply pipeline.

[0019] In some preferred embodiments, the ink recovery device further includes a first filter adapter plate and a second filter adapter plate; wherein: the first filter adapter plate has a liquid inlet channel, a liquid outlet channel, and an air inlet channel; one end of the liquid inlet channel of the first filter adapter plate is provided with a first pagoda connector and connected to the second recovery pipeline, and the other end is provided with a first quick-release interface and connected to the inlet end of the first filter; one end of the liquid outlet channel of the first filter adapter plate is provided with a second pagoda connector and connected to the third recovery pipeline, and the other end is provided with a second quick-release interface and connected to the outlet end of the first filter; one end of the air inlet channel of the first filter adapter plate is provided with a third pagoda connector and connected to an external air source ... of the air inlet channel is provided with a third quick-release interface and connected to the inlet end of the first filter. The first filter adapter plate has a third quick-release interface and is connected to the air inlet of the first filter; the second filter adapter plate has a liquid inlet channel, a liquid outlet channel and an air inlet channel. One end of the liquid inlet channel of the second filter adapter plate is provided with a fourth pagoda connector and is connected to the second ink supply pipeline, and the other end is provided with a fourth quick-release interface and is connected to the inlet end of the second filter; one end of the liquid outlet channel of the second filter adapter plate is provided with a fifth pagoda connector and is connected to the third ink supply pipeline, and the other end is provided with a fifth quick-release interface and is connected to the outlet end of the second filter; one end of the air inlet channel of the second filter adapter plate is provided with a sixth pagoda connector and is connected to the external air source pipeline, and the other end is provided with a sixth quick-release interface and is connected to the air inlet of the second filter.

[0020] Furthermore, the first quick-release interface, the second quick-release interface, the third quick-release interface, the fourth quick-release interface, the fifth quick-release interface, and the sixth quick-release interface are respectively provided with one or more sealing rings between them and the first filter inlet end, the first filter outlet end, the first filter air inlet, the second filter inlet end, the second filter outlet end, and the second filter air inlet.

[0021] In some embodiments, the first recovery pipeline, the second recovery pipeline, the third recovery pipeline, the first ink supply pipeline, the second ink supply pipeline, the third ink supply pipeline, and the fourth ink supply pipeline are all flexible tubes.

[0022] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0023] This invention utilizes a filtration system comprised of a recycling tank, a recycling pump, and a first filter to process and store waste ink generated during the ink pressing process in an ink storage container. The ink is then transported back to the printhead via an ink supply pump, a second filter, and an ink cartridge, thus achieving ink recycling. After the ink pressing process is completed, high-pressure gas precisely blows away residual ink from the printhead surface through a specially designed air inlet chamber. First, the second air inlet channel acts as an airflow buffer chamber, effectively reducing the initial impact force of the high-pressure gas and ensuring uniform pressure throughout the chamber. Subsequently, the airflow direction is optimized and adjusted by the airflow guiding structure of the third air inlet channel, ensuring stable airflow while precisely and evenly directing the airflow towards the recycling chamber, thereby guiding the residual ink into the recycling tank.

[0024] This invention not only enables ink recycling and reuse, but also achieves a self-cleaning function for the printhead, eliminating the need for traditional manual wiping. Attached Figure Description

[0025] Figure 1 A simplified structural diagram of the ink recovery device provided in Example 1;

[0026] Figure 2 This is a schematic diagram of the inkjet printer provided in Example 1;

[0027] Figure 3 A cross-sectional view of the inkjet printer provided in Example 1;

[0028] Figure 4 A cross-sectional view of the first filter provided in Embodiment 1;

[0029] Figure 5 A cross-sectional view of the second filter provided in Embodiment 1;

[0030] Among them, 1. Inkjet printer; 11. Printhead; 12. Mounting base body; 121. Recessed area; 122. Inkjet chamber; 123. Recovery chamber; 1231. Recovery section; 124. Air inlet chamber; 1241. First air inlet channel; 1242. Second air inlet channel; 1243. Third air inlet channel; 13. First baffle; 14. Second baffle; 15. First sealing structure; 16. Second sealing structure;

[0031] 2. Recovery pump;

[0032] 3. First filter; 31. First filter adapter plate; 311. First pagoda connector; 312. Second pagoda connector; 313. Third pagoda connector; 314. First quick-release interface; 315. Second quick-release interface; 316. Third quick-release interface; 32. First filter inlet end; 33. First filter outlet end; 34. First filter air inlet;

[0033] 4. Ink storage container;

[0034] 5. Ink supply pump;

[0035] 6. Second filter; 61. Second filter adapter plate; 611. Fourth pagoda connector; 612. Fifth pagoda connector; 613. Sixth pagoda connector; 614. Fourth quick-release interface; 615. Fifth quick-release interface; 616. Sixth quick-release interface; 62. Second filter inlet end; 63. Second filter outlet end; 64. Second filter air inlet;

[0036] 7. Ink cartridges;

[0037] 81. First ink recovery pipeline; 82. Second ink recovery pipeline; 83. Third ink recovery pipeline; 84. First ink supply pipeline; 85. Second ink supply pipeline; 86. Third ink supply pipeline; 87. Fourth ink supply pipeline;

[0038] 9. Recycling tank. Detailed Implementation

[0039] The present invention will be further described below with reference to embodiments, but the present invention is not limited to the following embodiments. The implementation conditions used in the embodiments can be further adjusted according to different requirements of specific use, and the implementation conditions not specified are conventional conditions in the industry. The technical features involved in the various embodiments of the present invention can be combined with each other as long as they do not conflict with each other.

[0040] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0041] In the description of the embodiments of this utility model, it should be understood that the terms "inner" and "outer" indicate the orientation or positional relationship defined by the distance relative to the center of the device or component. Inner is the position closer to the center of the device or component, and outer is the position farther away from the center of the device or component. They are only used to facilitate the description of the embodiments of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0043] The following disclosure provides many different implementations or examples for different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of the present invention; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0044] Example 1

[0045] An ink recycling device, such as Figure 1 As shown, it includes an inkjet printer 1, a recovery tank 9, a recovery pump 2, a first filter 3, an ink storage container 4, an ink supply pump 5, a second filter 6, and an ink cartridge 7 arranged sequentially along the ink flow path.

[0046] The inkjet printer 1 includes a printhead 11 and a printhead mounting base. The printhead mounting base has an inkjet chamber 122 and a recovery chamber 123 and an air intake chamber 124 located on opposite sides of the inkjet chamber 122. The printhead 11 is disposed within the inkjet chamber 122, and its specific structure can be found in the prior art. The air intake chamber 124 is configured to allow the incoming high-pressure gas to form a directional airflow that blows towards the inkjet end of the printhead 11 and sweeps residual ink from the inkjet end to the recovery chamber 123. The air intake chamber 124 includes a first air intake channel 1241, a second air intake channel 1242, and a third air intake channel 1243 arranged sequentially along the gas flow path. The first air intake channel 1241 is connected to a high-pressure gas source, specifically through a pipeline. Preferably, a solenoid valve is installed on this pipeline to control the on / off state of the pipeline. The cross-sectional area of ​​the second air intake channel 1242 is larger than that of the first air intake channel 1241 to form a gas buffer section. The third air intake channel 1243 extends perpendicularly to the second air intake channel 1242, and its end opening faces the front inlet of the recovery chamber 123 to form an L-shaped airflow deflection structure. The recovery chamber 123 is connected to the recovery trough 9.

[0047] To ensure unobstructed flow of ink in the printhead 11 and stable ink flow, ink pressing is typically required. The waste ink generated during the pressing process is processed and stored in the ink storage container 4 through a filtration system consisting of the recovery tank 9, the recovery pump 2, and the first filter 3. Subsequently, the recycled ink is returned to the ink cartridge 7 via the ink supply pump 5 and the second filter 6, achieving ink recycling.

[0048] After the ink pressing process is completed, the printhead 11 usually needs to be wiped manually to avoid residual ink affecting subsequent printing. Using the aforementioned air inlet chamber 124, high-pressure gas can precisely blow away residual ink from the surface of the printhead 11. Specifically, high-pressure gas is sequentially introduced into the first air inlet channel 1241, the second air inlet channel 1242 with a buffer function, and the third air inlet channel 1243 with an airflow guiding structure. This design effectively reduces the initial impact force of the high-pressure gas and stabilizes the airflow direction, ensuring that the high-pressure gas is precisely directed towards the recovery chamber 123, thereby thoroughly removing residual ink from the printhead 11 and guiding it into the recovery chamber 123, eliminating the need for manual wiping. Preferably, the cross-sectional area of ​​the second air inlet channel 1242 is 5 to 10 times that of the first air inlet channel 1241. The end opening of the third air inlet channel 1243 is a slit-shaped opening, thus forming a more uniform and stable thin-layer airflow, resulting in better performance. Furthermore, the number of first air intake channels 1241 is one, or it can be multiple channels arranged along the length or height of the second air intake channel 1242.

[0049] In this embodiment, as Figure 2 and Figure 3 As shown, the printhead mounting base specifically includes a mounting base body 12, a first baffle 13, and a second baffle 14. The mounting base body 12 has an inwardly recessed region 121, within which an inkjet chamber 122, a recovery chamber 123, and an air intake chamber 124 are formed. The first baffle 13 is detachably mounted on the recessed region 121 where the air intake chamber 124 is located, and together with the inner wall of the recessed region 121, defines a third air intake passage 1243. The second baffle 14 is detachably mounted on the recessed region 121 where the recovery chamber 123 is located, and together with the inner wall of the recessed region 121, defines a complete collection space forming the recovery chamber 123. Preferably, the second baffle 14 extends towards the air intake chamber 124 and together with the inner wall of the recessed region 121 forms a recovery section 1231 located directly below the bottom of the inkjet chamber 122. The second baffle 14 is L-shaped.

[0050] Furthermore, the mating surface between the first baffle 13 and the mounting base body 12 is provided with a first sealing structure 15, which is located on the side of the third air intake channel 1243 away from the inkjet chamber 122. The mating surface between the second baffle 14 and the mounting base body 12 is provided with a second sealing structure 16, which is located on the side of the recovery chamber 123 away from the inkjet chamber 122.

[0051] The inlet of the recycling tank 9 is connected to the recycling chamber 123 via a guide pipe (not shown in the figure), or the connection method between the two can refer to the prior art and is not specifically limited. The outlet of the recycling tank 9 is connected to the inlet of the recycling pump 2 via the first recycling pipe 81. The outlet of the recycling pump 2 is connected to the inlet of the first filter 3 via the second recycling pipe 82. The outlet of the first filter 3 is connected to the inlet of the ink storage container 4 via the third recycling pipe 83. The inlet of the ink supply pump 5 is connected to the bottom of the ink storage container 4 via the first ink supply pipe 84. The outlet of the ink supply pump 5 is connected to the inlet of the second filter 6 via the second ink supply pipe 85. The outlet of the second filter 6 is connected to the inlet of the ink cartridge 7 via the third ink supply pipe 86. The outlet of the ink cartridge 7 is connected to the printhead 11 via the fourth ink supply pipe 87. The first recovery pipe 81, the second recovery pipe 82, the third recovery pipe 83, the first ink supply pipe 84, the second ink supply pipe 85, the third ink supply pipe 86, and the fourth ink supply pipe 87 are all flexible hoses.

[0052] To ensure filtration effectiveness, filters need to be replaced periodically. However, the filter's inlet and outlet pipes are typically inserted directly into the filter's inlet and outlet ports. This design has significant drawbacks in practical use: repeated insertion and removal cause the pipe interface diameter to gradually enlarge, affecting the connection sealing performance and potentially leading to leakage risks. The applicant addresses this by using a filter adapter plate to fix the inlet and outlet pipes to the adapter plate, while a quick-release interface connects the adapter plate to the filter. This eliminates the need for repeated insertion and removal of the inlet and outlet pipes during filter replacement; the filter can be replaced simply through the quick-release interface. This simplifies the operation process, effectively avoids interface wear caused by repeated insertion and removal, extends the service life of the piping system, and ensures the reliability of the connection seals.

[0053] Specifically, such as Figure 4 and Figure 5As shown, the ink recovery device also includes a first filter adapter plate 31 and a second filter adapter plate 61. The first filter adapter plate 31 has a liquid inlet channel, a liquid outlet channel, and an air inlet channel. Specifically: one end of the liquid inlet channel of the first filter adapter plate 31 is equipped with a first pagoda connector 311 and connected to a second recovery pipeline 82, and the other end is equipped with a first quick-release interface 314 and connected to the inlet end 32 of the first filter. One end of the liquid outlet channel of the first filter adapter plate 31 is equipped with a second pagoda connector 312 and connected to a third recovery pipeline 83, and the other end is equipped with a second quick-release interface 315 and connected to the outlet end 33 of the first filter. One end of the air inlet channel of the first filter adapter plate 31 is equipped with a third pagoda connector 313 and connected to an external air source pipeline (not shown in the figure), and the other end is equipped with a third quick-release interface 316 and connected to the air inlet 34 of the first filter. The second filter adapter plate 61 has a liquid inlet channel, a liquid outlet channel, and an air inlet channel. One end of the liquid inlet channel of the second filter adapter plate 61 is equipped with a fourth pagoda connector 611 and connected to the second ink supply line 85, while the other end is equipped with a fourth quick-release interface 614 and connected to the second filter inlet end 62. One end of the liquid outlet channel of the second filter adapter plate 61 is equipped with a fifth pagoda connector 612 and connected to the third ink supply line 86, while the other end is equipped with a fifth quick-release interface 615 and connected to the second filter outlet end 63. One end of the air inlet channel of the second filter adapter plate 61 is equipped with a sixth pagoda connector 613 and connected to an external air source line, while the other end is equipped with a sixth quick-release interface 616 and connected to the second filter air inlet 64. The air inlet channels of the first filter adapter plate 31 and the second filter adapter plate 61 are used to introduce gas to form positive pressure inside the filter, effectively pushing the ink to flow towards the outlet end, thereby improving the filtration efficiency. In this embodiment, the air inlet, inlet end, and outlet end (34, 32, 33) of the first filter are located on the same side, and the air inlet, inlet end, and outlet end (64, 62, 63) of the second filter are located on the same side.

[0054] Preferably, the first quick-release interface 314, the second quick-release interface 315, the third quick-release interface 316, the fourth quick-release interface 614, the fifth quick-release interface 615 and the sixth quick-release interface 616 each have one or more sealing rubber rings between them and the connection ports of their respective first filter 3 or second filter 6, so as to ensure the sealing of the connection between the two.

[0055] The present utility model has been described in detail above, with the aim of enabling those skilled in the art to understand its contents and implement it. However, this description should not be construed as limiting the scope of protection of the present utility model. All equivalent changes or modifications made in accordance with the spirit and essence of the present utility model should be included within the scope of protection of the present utility model.

Claims

1. An ink recovery device, characterized by, It includes an inkjet printer (1), a recovery tank (9), a recovery pump (2), a first filter (3), an ink storage container (4), an ink supply pump (5), a second filter (6), and an ink cartridge (7) arranged sequentially along the ink flow path; The inkjet printer (1) includes a printhead (11) and a printhead mounting base. The printhead mounting base has an inkjet chamber (122) and a recovery chamber (123) and an air inlet chamber (124) located on opposite sides of the inkjet chamber (122). The printhead (11) is disposed inside the inkjet chamber (122); The air intake chamber (124) is configured to allow the incoming high-pressure gas to form a directional airflow that blows towards the inkjet end of the printhead (11) and sweeps residual ink from the inkjet end to the recovery chamber (123). The chamber includes a first air intake channel (1241), a second air intake channel (1242), and a third air intake channel (1243) arranged sequentially along the gas flow path. The first air intake channel (1241) is connected to a high-pressure air source. The cross-sectional area of ​​the second air intake channel (1242) is larger than that of the first air intake channel (1241) to form a gas buffer section. The extension direction of the third air intake channel (1243) is perpendicular to the extension direction of the second air intake channel (1242), and its end opening is directly opposite the front inlet of the recovery chamber (123) to form an L-shaped airflow deflection structure. The recycling chamber (123) is connected to the recycling tank (9).

2. The ink recovery device according to claim 1, characterized in that, The nozzle mounting base includes a mounting base body (12), a first baffle (13), and a second baffle (14). The mounting body (12) has an inwardly recessed area (121), and the inkjet chamber (122), the recovery chamber (123) and the air intake chamber (124) are formed in the recessed area (121); The first baffle (13) is installed on the recessed area (121) where the air intake cavity (124) is located, and together with the inner wall of the recessed area (121), defines the third air intake channel (1243); The second baffle (14) is installed on the recessed area (121) where the recycling chamber (123) is located, and together with the inner wall of the recessed area (121), it defines the complete collection space of the recycling chamber (123).

3. The ink recovery device according to claim 2, characterized in that, The second baffle (14) extends toward the air inlet cavity (124) and together with the inner wall of the recessed area (121) forms a recovery section (1231) located directly below the bottom of the inkjet cavity (122).

4. The ink recovery device according to claim 3, characterized in that, The second baffle (14) is L-shaped.

5. The ink recovery device according to claim 2, characterized in that, The first baffle (13) has a first sealing structure (15) on the mating surface with the mounting base body (12), and the second baffle (14) has a second sealing structure (16) on the mating surface with the mounting base body (12).

6. The ink recovery device according to claim 1, characterized in that, The end opening of the third air intake channel (1243) is a slit-shaped opening.

7. The ink recovery device according to claim 1, characterized in that, The outlet end of the recycling tank (9) is connected to the inlet end of the recycling pump (2) through the first recycling pipeline (81), the outlet end of the recycling pump (2) is connected to the inlet end of the first filter (3) through the second recycling pipeline (82), and the outlet end of the first filter (3) is connected to the inlet end of the ink storage container (4) through the third recycling pipeline (83). The inlet end of the ink supply pump (5) is connected to the bottom of the ink storage container (4) through the first ink supply pipeline (84), the outlet end of the ink supply pump (5) is connected to the inlet end of the second filter (6) through the second ink supply pipeline (85), the outlet end of the second filter (6) is connected to the inlet end of the ink cartridge (7) through the third ink supply pipeline (86), and the outlet end of the ink cartridge (7) is connected to the print head (11) through the fourth ink supply pipeline (87).

8. The ink recovery device according to claim 7, characterized in that, The ink recovery device further includes a first filter adapter plate (31) and a second filter adapter plate (61); wherein: The first filter adapter plate (31) has a liquid inlet channel, a liquid outlet channel and an air inlet channel. One end of the liquid inlet channel of the first filter adapter plate (31) is provided with a first pagoda connector (311) and connected to the second recovery pipeline (82), and the other end is provided with a first quick-release interface (314) and connected to the first filter inlet end (32). One end of the liquid outlet channel of the first filter adapter plate (31) is provided with a second pagoda connector (312) and connected to the third recovery pipeline (83), and the other end is provided with a second quick-release interface (315) and connected to the first filter outlet end (33). One end of the air inlet channel of the first filter adapter plate (31) is provided with a third pagoda connector (313) and connected to an external air source pipeline, and the other end is provided with a third quick-release interface (316) and connected to the first filter air inlet (34). The second filter adapter plate (61) has a liquid inlet channel, a liquid outlet channel and an air inlet channel. One end of the liquid inlet channel of the second filter adapter plate (61) is provided with a fourth pagoda connector (611) and connected to the second ink supply pipeline (85), and the other end is provided with a fourth quick-release interface (614) and connected to the second filter inlet end (62). One end of the liquid outlet channel of the second filter adapter plate (61) is provided with a fifth pagoda connector (612) and connected to the third ink supply pipeline (86), and the other end is provided with a fifth quick-release interface (615) and connected to the second filter outlet end (63). One end of the air inlet channel of the second filter adapter plate (61) is provided with a sixth pagoda connector (613) and connected to an external air source pipeline, and the other end is provided with a sixth quick-release interface (616) and connected to the second filter air inlet (64).

9. The ink recovery device according to claim 8, characterized in that, The first quick-release interface (314), the second quick-release interface (315), the third quick-release interface (316), the fourth quick-release interface (614), the fifth quick-release interface (615), and the sixth quick-release interface (616) are respectively provided with one or more sealing rings between them and the first filter inlet end (32), the first filter outlet end (33), the first filter air inlet (34), the second filter inlet end (62), the second filter outlet end (63), and the second filter air inlet (64).

10. The ink recovery device according to claim 7, characterized in that, The first recovery pipeline (81), the second recovery pipeline (82), the third recovery pipeline (83), the first ink supply pipeline (84), the second ink supply pipeline (85), the third ink supply pipeline (86), and the fourth ink supply pipeline (87) are all flexible hoses.

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