Filtering device and ink-jet printing equipment

Abstract

The utility model belongs to the technical field of ink-jet printing equipment, and relates to a filtering device which comprises a box body, a recycling mechanism and an air exhaust mechanism. A cavity is formed in the box body; the recycling mechanism is arranged in the box body and comprises a recycling part and a filtering part, the recycling part is arranged in the cavity, the recycling part is provided with a collecting groove with an opening, and the filtering part is arranged on the recycling part and is opposite to the opening; the air exhaust mechanism is arranged on the box body and communicated with the cavity. The utility model further relates to ink-jet printing equipment. The ink filtering effect can be improved, the ink recycling quality is improved, and then ink recycling is achieved.

Description

Technical Field

[0001] This application relates to the field of inkjet printing equipment technology, and more specifically, to a filtration device and an inkjet printing device. Background Technology

[0002] Inkjet printing technology mass-produces displays by jetting less than tens of petaliters of ink. Compared to vapor deposition, which vaporizes organic materials in a vacuum, inkjet printing offers advantages such as production under normal pressure, less ink dripping onto the substrate, and improved material utilization efficiency.

[0003] Ink residue in inkjet printers can affect the printing process. Currently, during the cleaning of inkjet printers, residual ink can be recovered and reused for printing. However, the recovered ink contains impurities and air bubbles, resulting in poor performance. Utility Model Content

[0004] This application provides a filtration device and an inkjet printing device.

[0005] To address the aforementioned technical problems, this application provides a filtration device that employs the following technical solution:

[0006] A filtration device includes a housing, a recovery mechanism, and an air extraction mechanism;

[0007] A cavity is formed inside the box;

[0008] The recycling mechanism is located inside the cavity. The recycling mechanism includes a recycling component and a filter component. The recycling component is located inside the cavity and has a collection groove with an opening. The filter component is located on the recycling component and is arranged opposite to the opening.

[0009] The air extraction mechanism is located on the housing and communicates with the cavity.

[0010] Furthermore, the recycling mechanism also includes a fixed base and a lifting assembly. The fixed base is disposed in the cavity, the lifting assembly is disposed on the fixed base, the recycling component is disposed on the lifting assembly, and the lifting assembly drives the recycling component to move relative to the cavity.

[0011] Furthermore, the lifting assembly includes a drive component, a drive wheel, and a movable seat;

[0012] The driving component is mounted on the housing; the driving wheel is mounted on the fixed base and connected to the driving end of the driving component; the movable base is mounted on the driving wheel and the recycling component is mounted on the movable base; the driving component drives the driving wheel to rotate, thereby causing the movable base to move relative to the cavity.

[0013] Furthermore, the recycling mechanism also includes a support assembly, which includes a guide shaft, at least one guide member, and at least one support member;

[0014] The guide shaft is disposed on the movable seat and is perpendicular to the moving direction of the movable seat; the guide member is movably connected to the guide shaft; one end of the support member is rotatably connected to the fixed seat and the other end is rotatably connected to the guide member.

[0015] Furthermore, the movable seat is provided with at least one limiting groove on the side facing the fixed seat, the guide shaft is at least partially exposed in the limiting groove, the guide member is located in the limiting groove, and the guide member slides along the guide shaft in the limiting groove.

[0016] Furthermore, the support assembly also includes an elastic reset member, which is disposed on the guide shaft. One end of the elastic reset member is connected to the guide member, and the other end is connected to the groove wall of the limiting groove.

[0017] Furthermore, the sidewall of the filter element abuts against the inner wall of the cavity, and the filter element divides the cavity into a first cavity and a second cavity;

[0018] The filter element is provided with a plurality of filter holes, and the first cavity is connected to the collection tank through the filter holes; and / or

[0019] The recovery component is provided with a liquid guiding hole, and the collection tank is connected to the second cavity through the liquid guiding hole; and / or

[0020] The housing is provided with an inlet pipe and an outlet pipe. The inlet pipe is located on the housing and is connected to the first cavity. The outlet pipe is located on the housing and is connected to the second cavity.

[0021] Furthermore, the bottom surface of the cavity forms a guide slope that gradually decreases in height from the center to both sides, and the lowest point of the guide slope has a drain outlet, which is connected to the drain pipe; and / or,

[0022] The housing also includes a flow guiding structure, one end of which is connected to the liquid guiding hole and the other end of which is connected to the liquid drain pipe.

[0023] Furthermore, the air extraction mechanism includes an air pump, an air intake pipe, a water-proof component, and an exhaust pipe;

[0024] The air pump is mounted on the housing. One end of the air intake pipe is connected to the air inlet of the air pump, and the other end is connected to the cavity. The water-proof component is located at the end of the air intake pipe connected to the cavity. The exhaust pipe is connected to the exhaust end of the air pump.

[0025] To address the aforementioned technical problems, this application also provides an inkjet printing device, which employs the following technical solution:

[0026] An inkjet printing device includes a filter as described above.

[0027] Compared with the prior art, the embodiments of this application have the following main advantages:

[0028] This application can improve the filtration effect of ink, improve the quality of ink recycling, and thus realize the recycling and reuse of ink. Attached Figure Description

[0029] To more clearly illustrate the solution of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of the filtering device according to an embodiment of this application;

[0031] Figure 2 This is a cross-sectional schematic diagram of the filtering device according to an embodiment of this application;

[0032] Figure 3 This is a cross-sectional schematic diagram of a filtering device according to another embodiment of this application;

[0033] Figure 4 This is a schematic diagram of the structure of the recycling mechanism according to an embodiment of this application;

[0034] Figure 5 This is a schematic diagram of the exhaust mechanism according to an embodiment of this application.

[0035] Figure label:

[0036] 1. Housing; 11. Cavity; 111. First Cavity; 112. Second Cavity; 12. Support Base; 121. Guide Surface; 13. Shell; 14. Top Cover; 15. Liquid Inlet Pipe; 16. Liquid Outlet Pipe; 17. Connecting Protrusion; 18. Connecting Groove; 19. Flow Guiding Structure; 2. Recovery Mechanism; 21. Recovery Component; 211. Collection Tank; 212. Liquid Guide Hole; 22. Filter Component; 221. Filter Hole; 23. Fixed Base; 24. Lifting Assembly; 241. Drive Component; 242. Drive Wheel; 243. Movable Base; 2431. Limiting Groove; 244. Rotating Shaft; 25. Support Assembly; 251. Guide Shaft; 252. Guide Component; 253. Support Component; 3. Air Extraction Mechanism; 31. Air Pump; 32. Air Inlet Pipe; 33. Water Separator; 34. Exhaust Pipe. Detailed Implementation

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0038] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0039] Since inkjet printers use a large amount of ink during the inkjet printing process, it is necessary to recycle the ink during and after the inkjet printing work to avoid material waste and environmental pollution.

[0040] Existing inkjet printing equipment filters typically only have a recycling function. During the inkjet printing process, the ink often contains various impurities and air. Therefore, the ink directly recycled by existing filters cannot be used directly and requires further processing before it can be recycled. The processing steps are complex and costly.

[0041] In view of the problems existing in the above background technology, the present application provides a filtering device applied to inkjet printing equipment.

[0042] Please see Figure 1 As shown in the figure, this application provides a filtration device, including a housing 1, a recovery mechanism 2 and an air extraction mechanism 3.

[0043] Please see Figures 1 to 3 As shown, in some embodiments, a cavity 11 is formed inside the housing 1; the recycling mechanism 2 is disposed inside the cavity 11, the recycling mechanism 2 includes a recycling component 21 and a filter component 22, the recycling component 21 is disposed inside the cavity 11, and the recycling component 21 is provided with a collection groove 211 with an opening; the filter component 22 is disposed on the recycling component 21 and is disposed opposite to the opening; the air extraction mechanism 3 is disposed on the housing 1 and communicates with the cavity 11.

[0044] In this embodiment, the housing 1 includes a support base 12, a shell 13, and a top cover 14. The shell 13 is disposed on the support base 12, and the top cover 14 is disposed on the shell 13. The support base 12, the shell 13, and the top cover 14 form the cavity 11. The housing 1 adopts a split structure design to facilitate users to clean and wash the inner wall of the cavity 11 and the components located in the cavity 11, ensuring that the filter device can be used for a long time.

[0045] In this embodiment, at least a portion of the lower part of the filter element 22 is placed inside the collection groove 211 and is interference-fitted with the collection groove 211 to improve the sealing effect between the filter element 22 and the recycling element 21, and to prevent unfiltered ink from seeping into the collection groove 211 from the gap between the filter element 22 and the recycling element 21, thus affecting the filtration quality of the ink.

[0046] In this embodiment, the filter element 22 is provided with a plurality of filter holes 221, which are used to filter ink. The ink filtered through the filter holes 221 enters the collection tank 211 for collection.

[0047] This embodiment of the application achieves ink recycling by setting a recycling mechanism 2 in the housing 1. The recycling mechanism 2 is equipped with a filter element 22 to filter the ink, thereby improving the quality of ink recycling and facilitating ink reuse. By setting an air extraction mechanism 3, the chamber 11 is evacuated during the ink filtration and recycling process to remove air mixed in with the ink, thereby improving the ink filtration effect, improving the quality of ink recycling, and ultimately realizing the reuse of ink.

[0048] Please see Figure 2 As shown, in some embodiments, the end of the housing 13 facing the support base 12 and the end facing the upper cover 14 are both provided with connecting protrusions 17. The support base 12 and the upper cover 14 are both provided with connecting grooves 18 that correspond to and cooperate with the connecting protrusions 17. Through the interference fit between the connecting protrusions 17 and the connecting grooves 18, a sealed connection is achieved between the housing 13 and the support base 12, as well as a sealed connection is achieved between the upper cover 14 and the housing 13.

[0049] In other embodiments, the housing 13 may be configured to form a connecting groove 18, and the support base 12 and the upper cover 14 may be provided with connecting protrusions 17, as long as the upper cover 14, housing 13 and support base 12 are sealed together.

[0050] In this embodiment, the connection between the connecting protrusion 17 and the connecting groove 18 enables the housing 1 to have the advantages of a split-type assembly structure while also having good sealing performance to prevent ink leakage.

[0051] Please see Figure 2 , Figure 3 As shown, in some embodiments, the collection tank 211 has a flared structure facing the filter element 22, the end of which is fitted against the inner wall of the cavity 11.

[0052] This embodiment of the application guides the ink filtered by the filter element 22 by setting the shape of the opening end of the collection tank 211, promotes the smooth flow of ink, avoids the accumulation of bubbles and foam, and improves the quality of ink recycling.

[0053] Please see Figures 2-4 As shown, in some embodiments, the filter element 22 completely covers the opening of the collection tank 211, the side wall of the filter element 22 abuts against the inner wall of the cavity 11, and the filter element 22 divides the cavity 11 into a first cavity 111 and a second cavity 112. By setting the side wall of the filter element 22 to abut against the inner wall of the cavity 11, it is ensured that the ink can completely enter the collection tank 211, and unfiltered ink is prevented from penetrating downwards through the filter element 22, thus affecting the filtration quality of the ink.

[0054] The first cavity 111 is connected to the collection tank 211 through the filter hole 221; the recovery component 21 is provided with at least one liquid guiding hole 212, and the collection tank 211 is connected to the second cavity 112 through the liquid guiding hole 212.

[0055] Please see Figures 1-3 As shown, in some embodiments, the housing 1 is provided with an inlet pipe 15 and an outlet pipe 16. The inlet pipe 15 is provided on the housing 1 and is connected to the first cavity 111; the outlet pipe 16 is provided on the housing 1 and is connected to the second cavity 112.

[0056] Please see Figure 2 As shown, in some embodiments, the bottom surface of the cavity 11 forms a guide slope 121 whose height gradually decreases from the middle to both sides, and the lowest point of the guide slope 121 has a drain port, which is connected to the drain pipe 16.

[0057] In this embodiment, by setting the shape of the bottom surface of the cavity 11, the filtered ink can flow to the drain port under the guidance of the guide slope 121 and be discharged through the drain pipe 16.

[0058] Please see Figure 3As shown, in other embodiments, the housing 1 further includes a flow guiding structure 19, one end of which is connected to the liquid guiding hole 212 and the other end is connected to the drain pipe 16.

[0059] Specifically, the flow guiding structure 19 is preferably a flexible flow guiding tube, one end of which is connected to the liquid guiding hole 212 and the other end is connected to the liquid draining pipe 16.

[0060] In other embodiments, the filtered ink is guided through the flow guide structure 19 to the drain pipe 16, thereby preventing the filtered ink from contacting the components in the second cavity 112 during the discharge process, thus avoiding secondary contamination of the ink and affecting the filtration quality of the ink.

[0061] Based on the filtration device described above, in order to further optimize the filtration effect of the filtration device, the embodiments of this application also include the following structure:

[0062] Please see Figures 2-4 As shown, the recycling mechanism 2 also includes a fixed base 23 and a lifting assembly 24.

[0063] The fixing seat 23 is disposed inside the cavity 11. In this embodiment, the fixing seat 23 is disposed on the support seat 12, and the guide slope 121 is gradually inclined downward from the fixing seat 23 to both sides.

[0064] The lifting assembly 24 is mounted on the fixed base 23, and the recovery component 21 is mounted on the lifting assembly 24. The lifting assembly 24 drives the recovery component 21 to move relative to the cavity 11.

[0065] In this embodiment, a lifting component 24 is provided in the recycling mechanism 2. The lifting component 24 controls the recycling component 21 to move up and down relative to the cavity 11 in the box 1 during the ink recycling process. This improves the filtration speed of the filter component 22 and also disperses the aggregates deposited on the filter component 22, thereby preventing the aggregates from clogging the filter holes 221 of the filter component 22 and ensuring the filtration quality of the ink.

[0066] Please continue reading Figures 2-4 As shown, in some embodiments, the lifting assembly 24 includes a drive member 241, a drive wheel 242, and a movable seat 243.

[0067] In some embodiments, the driving member 241 is disposed on the housing 1. In this embodiment, the housing 1 is provided with a bracket, and the driving member 241 is disposed on the bracket. The driving end of the driving member 241 passes through the housing 1 and enters the cavity. Furthermore, the lifting assembly 24 also includes a rotating shaft 244, which is disposed on the driving end of the driving member 241.

[0068] In some embodiments, the drive wheel 242 is mounted on the fixed base 23 and is connected to the drive end of the drive member 241. In this embodiment, the drive wheel 242 is mounted on the rotating shaft 244, and the drive member 241 drives the rotating shaft 244 to rotate, thereby causing the drive wheel 242 to rotate synchronously around the axis of the rotating shaft 244.

[0069] The movable seat 243 is disposed on the drive wheel 242, and the recycling component 21 is disposed on the movable seat 243. In this embodiment, the movable seat 243 is provided with a mounting groove (not shown in the figure). The mounting groove matches the bottom surface shape of the recycling component 21 so as to position the recycling component 21 in the mounting groove and improve the installation stability of the recycling component 21. Furthermore, the movable seat 243 is provided with a coaxial through hole corresponding to the position of the liquid guiding hole 212 so that the ink in the collection tank 211 can enter the second cavity 112.

[0070] In some embodiments, the drive member 241 drives the drive wheel 242 to rotate, causing the movable seat 243 to move relative to the cavity, thereby driving the recycling member 21 to move relative to the cavity. In this embodiment, under the action of gravity, the bottom surface of the movable seat 243 always abuts against the top surface of the drive wheel 242. The drive wheel 242 can be one of a teardrop-shaped cam, a Reichol triangular cam, or an eccentric wheel. By designing the outer surface contour shape of the drive wheel 242, the top surface movement path of the cam can be precisely controlled, thereby realizing the design of the activity frequency of the recycling member and improving the ink filtration effect. At the same time, using the movable seat 243 as a flat-bottomed transmission member to cooperate with the drive wheel 242 reduces the wear between the movable seat 243 and the drive wheel 242, thereby extending the service life of the drive wheel 242, and can provide smooth motion transmission, avoiding violent shaking and improving the ink filtration effect.

[0071] In this embodiment, the side wall of the movable seat 243 is fitted with the inner wall of the cavity 11 to ensure that the cavity 11 can guide the movable seat 243 to move in the vertical direction, ensuring the stability of the movable seat 243 during lifting and lowering, and improving the filtration effect of the ink.

[0072] Please continue reading Figures 2-4As shown, in some embodiments, the recycling mechanism 2 further includes a support component 25, which includes a guide shaft 251, at least one guide member 252 and at least one support member 253. In this embodiment, the number of guide members 252 and support members 253 is the same.

[0073] The guide shaft 251 is disposed on the movable seat 243 and is arranged perpendicular to the moving direction of the movable seat 243; the guide member 252 is movably connected to the guide shaft 251; one end of the support member 253 is rotatably connected to the fixed seat 23 and the other end is rotatably connected to the guide member 252.

[0074] In this embodiment, there are two support members 253. The two support members 253 are arranged symmetrically in a trumpet shape and are respectively connected to the opposite side of the movable seat 243 to support the movable seat 243.

[0075] During operation, the drive member 241 drives the drive wheel 242 to rotate, thereby driving the movable seat 243 to rise vertically relative to the cavity 11, causing the two guide members 252 to move towards each other along the guide shaft 251, and driving the two support members 253 to rotate in a closer direction; the drive member 241 further drives the drive wheel 242 to rotate, driving the movable seat 243 to fall vertically relative to the cavity 11, and the two guide members 252 to move away from each other along the guide shaft 251, driving the two support members 253 to rotate in a direction away from each other. By driving the drive wheel 242 to rotate at a set speed through the drive member 241, the movable seat 243 can reciprocate up and down relative to the cavity 11.

[0076] This embodiment of the application further provides support component 25, which provides sufficient support for the movable seat 243, thereby improving the installation stability of the movable seat 243. At the same time, the cooperation between the guide shaft 251, the guide member 252 and the support member 253 provides a certain support for the movement of the movable seat 243, thereby improving the movement stability of the movable seat 243.

[0077] In some embodiments, the movable seat 243 is provided with at least one limiting groove 2431 on the side facing the fixed seat 23, the guide shaft 251 is at least partially exposed in the limiting groove 2431, the guide member 252 is located in the limiting groove, and the guide member 252 slides along the guide shaft 251 in the limiting groove 2431.

[0078] This embodiment of the application further sets a limiting groove 2431 to limit the movement distance of the guide member 252, thereby limiting the range of motion of the movable seat 243 when it reciprocates up and down, preventing the movable seat 243 from detaching from the top of the drive wheel 242 under inertia, thus affecting the movement stability of the movable seat 243 and improving the filtration effect of the ink.

[0079] In some embodiments, the support assembly 25 further includes an elastic reset member (not shown in the figure), which is disposed on the guide shaft 251. One end of the elastic reset member is connected to the guide member 252, and the other end is connected to the groove wall of the limiting groove 2431.

[0080] In this embodiment, the elastic reset element is a linear spring.

[0081] In this embodiment, the elastic reset member can be disposed near the drive wheel 242. Specifically, one end of the elastic reset member is connected to the side wall of the guide member 252 near the drive wheel 242, and the other end is connected to the groove wall of the limiting groove 2431. When the movable seat 243 is in the rising stage, the guide member 252 moves along the guide shaft 251 toward the drive wheel 242, compressing the elastic reset member. When the movable seat 243 is in the falling stage, the elastic reset member is released. Under its own elastic reset action, the elastic reset member pushes the guide member 252 to move along the guide shaft 251 away from the drive wheel 242.

[0082] In other embodiments, the elastic reset member can also be disposed on the side away from the drive wheel 242. Specifically, one end of the elastic reset member is connected to the side wall of the guide member 252 away from the drive wheel 242, and the other end is connected to the groove wall of the limiting groove 2431. When the movable seat 243 is in the rising stage, the guide member 252 moves along the guide shaft 251 toward the drive wheel 242, stretching the elastic reset member. When the movable seat 243 is in the falling stage, the elastic reset member is released, and the elastic reset member pulls the guide member 252 along the guide shaft 251 toward the direction away from the drive wheel 242 under its own elastic reset action.

[0083] In this embodiment, the elastic reset member enables the guide member 252 to move to both sides along the guide shaft 251 without external force, thereby causing the movable seat 243 to descend. Under the elastic force of the elastic reset member and the gravity of the movable seat 243 itself, the bottom surface of the movable seat 243 is always in contact with the outer surface of the drive wheel 242, thereby ensuring smooth power transmission of the drive wheel 242, improving the movement stability of the movable seat 243, and thus improving the filtration efficiency of ink.

[0084] To prevent the filtered ink from being secondary contaminated by the components of the lifting and supporting components, the embodiments of this application also include the following structural design:

[0085] Please see Figure 2 , Figure 3 As shown, in this embodiment, the projection position of the liquid guiding hole 212 on the support base 12 is located outside the lifting assembly 24 and the support assembly 25. By setting the position of the liquid guiding hole 212, the filtered ink in the collection tank 211 is prevented from dripping onto the components of the lifting assembly 24 and / or the support assembly 25, thereby avoiding secondary pollution of the filtered ink and improving the filtration quality of the ink.

[0086] Please see Figure 1 , Figure 2 , Figure 5 As shown, in some embodiments, the air extraction mechanism 3 includes an air pump 31, an air intake pipe 32, a water-blocking component 33, and an exhaust pipe 34.

[0087] The air pump 31 is mounted on the housing 1. One end of the air intake pipe 32 is connected to the air intake end of the air pump 31, and the other end is connected to the cavity 11. The water-blocking component 33 is located at the end of the air intake pipe 32 connected to the cavity 11. The exhaust pipe 34 is connected to the exhaust end of the air pump 31.

[0088] In this embodiment, the air extraction mechanism 3 is designed to extract air from the cavity 11 during the ink filtration and recycling process. This allows air mixed in with the ink to be extracted and discharged in a timely manner through the exhaust pipe 34, thereby improving the ink filtration effect, enhancing the ink recycling quality, and ultimately enabling the recycling and reuse of the ink. Furthermore, the water-blocking component 33 prevents ink from splashing into the air extraction mechanism 3.

[0089] In this embodiment, the waterproof and breathable membrane (not shown in the figure) is provided inside the water-proof component 33.

[0090] Based on the filtering device described above, this application embodiment also provides an inkjet printing device, which includes the filtering device described above.

[0091] In this embodiment, the inkjet printing equipment further includes a printing device, and the ink drain channel of the printing device is connected to the inlet pipe 15 of the filter device through a pipeline; the filter device is used to recover the ink of the printing device, and after venting and filtering, it is recycled into the recovery unit 21 for the reuse of ink.

[0092] The inkjet printing device provided in this application embodiment filters the ink through a recycling mechanism 2, thereby improving the quality of ink recycling and facilitating ink reuse. Furthermore, the air extraction mechanism 3 extracts air from the cavity during the ink filtration and recycling process, further enhancing the filtration effect and recycling quality of the ink, ultimately enabling its reuse.

[0093] Obviously, the embodiments described above are only some embodiments of this application, not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application. This application can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this application's specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the scope of patent protection of this application.

Claims

1. A filtration device, characterized in that, Includes the housing, recycling mechanism, and air extraction mechanism; A cavity is formed inside the box; The recycling mechanism is located inside the cavity. The recycling mechanism includes a recycling component and a filter component. The recycling component is located inside the cavity and has a collection groove with an opening. The filter component is located on the recycling component and is arranged opposite to the opening. The air extraction mechanism is located on the housing and communicates with the cavity.

2. The filtration device according to claim 1, characterized in that, The recycling mechanism further includes a fixed base and a lifting assembly. The fixed base is disposed in the cavity, the lifting assembly is disposed on the fixed base, the recycling component is disposed on the lifting assembly, and the lifting assembly drives the recycling component to move relative to the cavity.

3. The filtration device according to claim 2, characterized in that, The lifting assembly includes a drive component, drive wheels, and a movable seat; The driving component is mounted on the housing; the driving wheel is mounted on the fixed seat and connected to the driving end of the driving component; the movable seat is mounted on the driving wheel and the recycling component is mounted on the movable seat; the driving component drives the driving wheel to rotate, causing the movable seat to move relative to the cavity.

4. The filtration device according to claim 3, characterized in that, The recycling mechanism also includes a support assembly, which includes a guide shaft, at least one guide member, and at least one support member. The guide shaft is disposed on the movable seat and is perpendicular to the moving direction of the movable seat; the guide member is movably connected to the guide shaft; one end of the support member is rotatably connected to the fixed seat and the other end is rotatably connected to the guide member.

5. The filtration device according to claim 4, characterized in that, The movable seat is provided with at least one limiting groove on the side facing the fixed seat, the guide shaft is at least partially exposed in the limiting groove, the guide member is located in the limiting groove, and the guide member slides along the guide shaft in the limiting groove.

6. The filtration device according to claim 5, characterized in that, The support assembly also includes an elastic reset member, which is disposed on the guide shaft. One end of the elastic reset member is connected to the guide member, and the other end is connected to the groove wall of the limiting groove.

7. The filtration device according to claim 1, characterized in that, The sidewall of the filter element abuts against the inner wall of the cavity, and the filter element divides the cavity into a first cavity and a second cavity; The filter element is provided with a plurality of filter holes, and the first cavity is connected to the collection tank through the filter holes; and / or The recovery component is provided with at least one liquid guiding hole, and the collection tank is connected to the second cavity through the liquid guiding hole; and / or The housing is provided with an inlet pipe and an outlet pipe. The inlet pipe is located on the housing and is connected to the first cavity. The outlet pipe is located on the housing and is connected to the second cavity.

8. The filtration device according to claim 7, characterized in that, The bottom surface of the cavity forms a guide slope whose height gradually decreases from the middle to both sides. The lowest point of the guide slope has a drain outlet, which is connected to the drain pipe; and / or, The housing also includes a flow guiding structure, one end of which is connected to the liquid guiding hole and the other end of which is connected to the liquid drain pipe.

9. The filtration device according to claim 1, characterized in that, The air extraction mechanism includes an air pump, an air intake pipe, a water-proof component, and an exhaust pipe; The air pump is mounted on the housing. One end of the air intake pipe is connected to the air inlet of the air pump, and the other end is connected to the cavity. The water-proof component is located at the end of the air intake pipe connected to the cavity. The exhaust pipe is connected to the exhaust end of the air pump.

10. An inkjet printing device, characterized in that, Includes the filtration device according to any one of claims 1 to 9.

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