Double-layer backflow prevention sealing structure of a recycled ink cartridge

Abstract

The utility model discloses a kind of double-layer anti-reflux sealing structures of regenerative ink cartridge, belong to printer consumables technical field, including storage box, ink adding port and ink outlet, further include anti-reflux mechanism and protection mechanism, anti-reflux mechanism includes check box, its inside rotationally connected with shaft, fixed with baffle and limiting plate on the shaft, the blocking block for abutting limiting plate is provided in check box inner wall, multiple check boxes are integrated by fixed frame, fixed frame is slidably connected using fixed plate and the fixed plate groove on storage box, protection mechanism is composed of honeycomb board of covering storage box and the buffer rubber pad of setting in box body four corners, and sealing cap, sealing column and sealing ring combination is used to seal ink outlet.The utility model solves the problem of ink backflow, poor protection and unreliable sealing, has the advantages of reliable anti-reflux, convenient installation and maintenance, strong anti-collision ability and good sealing.

Description

Technical Field

[0001] This utility model relates to the field of printer consumables technology, and in particular to a double-layer anti-backflow sealing structure for regenerated ink cartridges. Background Technology

[0002] As a common office and home device, printers consume a huge amount of ink cartridges. In order to save costs and respond to the call for environmental protection, recycled ink cartridges have emerged. By cleaning, repairing and refilling old ink cartridges, the recycling of resources is realized.

[0003] During the use of regenerated ink cartridges, ink needs to be stably delivered from the storage cartridge to the printer printhead. However, due to pressure fluctuations in the ink supply lines during printer breaks, power on / off, or cleaning procedures, a pressure difference is created between the storage cartridge and the printer. This pressure difference causes the ink that has been delivered to the printer lines to flow back into the storage cartridge, which is known as ink backflow.

[0004] Ink backflow can have serious adverse consequences. On the one hand, the backflowing ink can carry air into the ink supply line, forming air bubbles, which can cause defects such as broken lines and white streaks during printing. On the other hand, in color printing structures, the backflow of ink of one color can contaminate the ink supply channels of other colors, causing color mixing and seriously affecting print quality. Some existing regenerated ink cartridges lack a dedicated and reliable anti-backflow structure, and cannot fundamentally eliminate this problem.

[0005] As containers for storing liquid ink, existing regenerated ink cartridges have relatively simple sealing designs at the ports, making it difficult to maintain complete sealing reliability during long-term use or transportation. This poses a risk of ink leakage, which not only wastes consumables but also damages the delicate electronic components inside the printer. It is necessary to address issues such as ink backflow and inadequate sealing.

[0006] Therefore, this utility model proposes a double-layer anti-backflow sealing structure for regenerated ink cartridges to overcome the shortcomings of the prior art. Utility Model Content

[0007] In view of the problems in the prior art, such as ink backflow affecting print quality and unreliable port sealing posing a risk of leakage, the present invention aims to provide a double-layer anti-backflow sealing structure for regenerated ink cartridges with an improved structure that can effectively solve the above problems.

[0008] This utility model provides a double-layer anti-backflow sealing structure for regenerated ink cartridges, including: a storage box with an ink filling port at the top and an ink outlet at the bottom, and an anti-backflow mechanism.

[0009] The backflow prevention mechanism enables unidirectional ink flow and includes a check box connected to the ink outlet via a connecting pipe for delivering ink.

[0010] Furthermore, the check box is equipped with a mechanical one-way valve structure, which includes a rotating shaft rotatably connected inside the check box, and a baffle plate and a limiting plate fixedly connected to the rotating shaft. At the same time, a blocking block is fixedly installed on the inner wall of the check box. When the ink flows forward, it pushes the baffle plate to drive the rotating shaft to rotate and open the channel. When the ink attempts to flow back, the reverse pressure pushes the baffle plate and drives the limiting plate to rotate through the rotating shaft until the limiting plate is stopped by the blocking block, thereby closing the backflow channel.

[0011] Preferably, the regenerated ink cartridge double-layer anti-backflow sealing structure also includes a fixing frame, and multiple anti-backflow boxes are integrated and fixedly connected to the fixing frame for easy unified management and installation.

[0012] Preferably, in order to achieve quick assembly and disassembly, a fixed plate groove is provided on the side wall of the storage box, and a fixed plate is correspondingly fixedly connected to the side wall of the fixing frame. The fixed plate can slide in the fixed plate groove, thereby realizing the convenient installation and disassembly of the entire anti-backflow mechanism module.

[0013] Preferably, the structure further includes a protective mechanism for providing comprehensive physical protection for the storage box and for reliably sealing the ports.

[0014] Preferably, as part of the protective mechanism, it includes a honeycomb panel covering the outer surface of the storage box. Utilizing the lightweight, high strength, and cushioning properties of the honeycomb structure, it effectively absorbs and disperses energy when the storage box is subjected to external impact or drop, thus protecting the integrity of the box structure.

[0015] Preferably, as another part of the protective mechanism, it also includes multiple cushioning pads set at the four corners of the storage box, which use their elasticity to specifically absorb the impact force of corner collisions, providing protection for the most vulnerable parts of the storage box.

[0016] Preferably, to ensure the tightness of the ink outlet, the protective mechanism also includes a sealing cap that is threadedly connected to the ink outlet.

[0017] Preferably, to further improve the reliability of the seal, the sealing structure also includes a sealing post and a sealing ring. The sealing post is inserted into the sealing cover to increase the stability of the threaded connection and prevent loosening. The sealing ring is sandwiched between the sealing cover and the ink outlet. It fills all the tiny gaps by deforming under pressure during tightening, thus achieving a highly reliable sealing effect.

[0018] Preferably, to facilitate the stable installation of the entire structure inside the printer, a base pad is also fixedly connected to the bottom of the storage box.

[0019] This utility model has the following beneficial effects: 1. This utility model solves the problem of ink backflow in existing regenerated ink cartridges, which affects print quality, by setting an anti-backflow mechanism. The rotating shaft inside the anti-backflow box drives the baffle plate to rotate in one direction, and the limiting plate and blocking block restrict its reverse rotation. This achieves the goal of ensuring unidirectional ink flow, improving the reliability of anti-backflow and printing stability.

[0020] 2. This utility model integrates and fixes multiple check boxes by setting a fixing frame, and uses the fixing plate on the fixing frame to slide with the fixed plate groove on the storage box, which solves the problems of scattered anti-backflow components, inconvenient installation and maintenance in the prior art, and achieves convenient installation and disassembly and simplified maintenance process.

[0021] 3. This utility model solves the problem of poor protection of the ink cartridge body and damage due to collision or drop in the prior art by setting a protective mechanism, using a honeycomb plate to cover the storage box and setting buffer pads at the four corners of the box. It achieves the technical effect of effectively buffering impact and significantly improving the impact resistance and drop resistance of the storage box. By adopting a combination structure of sealing cover, sealing post and sealing ring to seal the ink outlet, it solves the problem of unreliable ink outlet sealing and ink leakage risk in the prior art. It achieves multiple reliable seals and effectively prevents ink overflow. Attached Figure Description

[0022] Figure 1 This is a perspective view of a double-layer anti-backflow sealing structure for a regenerated ink cartridge proposed in this utility model; Figure 2 This is a front view of a double-layer anti-backflow sealing structure for a regenerated ink cartridge proposed in this utility model; Figure 3 This is a side view of a double-layer anti-backflow sealing structure for a regenerated ink cartridge proposed in this utility model; Figure 4 This is a cross-sectional view of the check box of a double-layer anti-backflow sealing structure for regenerated ink cartridges proposed in this utility model.

[0023] Legend: 1. Storage box; 2. Base pad; 3. Ink filling port; 4. Anti-backflow mechanism; 401. Check box; 402. Rotating shaft; 403. Baffle plate; 404. Fixing frame; 405. Limiting plate; 406. Blocking block; 407. Fixing plate; 408. Fixed plate slot; 409. Connecting pipe; 5. Protective mechanism; 501. Honeycomb panel; 502. Buffer pad; 503. Sealing cover; 504. Sealing post; 505. Sealing ring; 6. Ink outlet. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model. Example

[0025] Please refer to Figures 1 to 4 This utility model provides a double-layer anti-backflow sealing structure for regenerated ink cartridges, which aims to solve the problems of ink backflow, poor protection, and unreliable port sealing in existing regenerated ink cartridges.

[0026] Reference Figures 1 to 4 A double-layer anti-backflow sealing structure for regenerated ink cartridges includes a storage box 1. The storage box 1 has an ink filling port 3 at the top and an ink outlet 6 at the bottom. The structure also includes an anti-backflow mechanism 4, which includes a check box 401. The check box 401 is connected to the ink outlet 6 through a connecting pipe 409. A rotating shaft 402 is rotatably connected inside the check box 401. A baffle plate 403 and a limiting plate 405 are fixedly connected to the rotating shaft 402. A blocking block 406 is fixedly provided on the inner wall of the check box 401. The blocking block 406 is used to abut against the limiting plate 405 when the rotating shaft 402 rotates in the opposite direction, thereby preventing ink backflow.

[0027] Please refer to Figure 1 , Figure 2 and Figure 3 To achieve integrated installation of the anti-backflow mechanism 4, the anti-backflow mechanism 4 also includes a fixing frame 404, and multiple check boxes 401 are fixedly connected to the fixing frame 404. Correspondingly, a fixed plate groove 408 is provided on the side wall of the storage box 1, and a fixing plate 407 is fixedly connected to the side wall of the fixing frame 404. In the assembled state, the fixing plate 407 is slidably connected in the fixed plate groove 408. This sliding connection method allows the entire anti-backflow mechanism 4 to be easily installed on or removed from the storage box 1, greatly improving the convenience of maintenance.

[0028] To further enhance the overall reliability of the structure, the structure also includes a protective mechanism 5, as shown in the reference. Figure 2 and Figure 3 The protective mechanism 5 includes a honeycomb panel 501 covering the outer surface of the storage box 1, and cushioning pads 502 fixedly connected to the four corners of the storage box 1. The honeycomb panel 501, with its structural characteristics and the elasticity of the cushioning pads 502, can effectively absorb the impact force and provide cushioning protection when the storage box 1 is subjected to external force collision or accidental drop.

[0029] At the same time, refer to Figure 2 The protective mechanism 5 also includes a sealing cover 503 for sealing the ink outlet 6. The sealing cover 503 and the ink outlet 6 are connected by threads. To further enhance the reliability of the seal, the protective mechanism 5 also includes a sealing post 504 and a sealing ring 505. The sealing post 504 is inserted into the sealing cover 503 to increase the connection stability, and the sealing ring 505 is sandwiched between the sealing cover 503 and the ink outlet 6. The gap is filled by compression deformation to ensure that the ink outlet 6 is tightly sealed.

[0030] In addition, to facilitate the stable installation of the entire structure inside the printer, a base pad 2 is also fixedly connected to the bottom of the storage box 1.

[0031] As a preferred implementation method, for ease of integrated installation and management, refer to Figure 1 and Figure 2 The anti-backflow mechanism 4 also includes a fixed frame 404, multiple anti-backflow boxes 401 are fixedly connected to the fixed frame 404, a fixed plate groove 408 is provided on the side wall of the storage box 1, and a fixed plate 407 is fixedly connected to the side wall of the fixed frame 404 accordingly, and the fixed plate 407 is slidably connected in the fixed plate groove 408. As a preferred embodiment, to improve the impact resistance of storage box 1, refer to Figures 1 to 3 The structure also includes a protective mechanism 5. Specifically, the protective mechanism 5 includes a honeycomb panel 501 covering the outer surface of the storage box 1 and a buffer pad 502 fixedly connected to the four corners of the storage box 1. The two work together to provide comprehensive collision protection for the storage box 1. As a preferred embodiment, to ensure the sealing reliability of the ink outlet 6, refer to Figure 2 The protective mechanism 5 also includes a sealing cover 503 for sealing the ink outlet 6. The sealing cover 503 and the ink outlet 6 are connected by threads. To achieve double sealing, the mechanism also includes a sealing post 504 and a sealing ring 505. The sealing post 504 is inserted into the sealing cover 503 to enhance the connection stability, and the sealing ring 505 is sandwiched between the sealing cover 503 and the ink outlet 6 to ensure the reliability of the seal. As a preferred embodiment, to facilitate stable installation of the entire structure on the printer equipment, refer to... Figure 3 The bottom of storage box 1 is fixedly connected to a bottom pad 2.

[0032] Working Principle: The regenerated ink cartridge double-layer anti-backflow device stores ink through the storage box 1. The bottom pad 2 of the storage box 1 is fixedly installed in a designated position on the printer. The ink filling port 3 at the top is used to add ink to the storage box 1. Multiple ink outlets 6 at the bottom of the storage box 1 are used to supply ink to the printer for printing. To prevent ink backflow during use, a check box 401 in the anti-backflow mechanism 4 stores the supplied ink. A rotating shaft 402 inside the check box 401 drives a baffle 403 to rotate. Simultaneously, limiting plates 405 on the multiple rotating shafts 402 inside the check box 401 block the baffle 403. The rotating shaft 402 can prevent the partition plate 403 from rotating without affecting the rotation of the baffle plate 403. The blocking block 406 prevents the limiting plate 405 from rotating in the opposite direction, which would cause ink backflow and affect the printing paper. The connecting pipe 409 on the outside of the check box 401 can connect to the conveying and output hoses. The fixing bracket 404 can fix multiple check boxes 401 together to prevent the check boxes 401 from being scattered and affecting the output. At the same time, the fixing plate slot 408 on the right side of the storage box 1 is slidably fixed with the fixing plate 407 on the left side of the fixing bracket 404. To remove the fixing bracket 404, the fixing bracket 404 needs to be pulled upwards, and to install it, it is the opposite. The overall mechanism improves the backflow prevention reliability of the regenerated ink cartridge and the convenience of installation and maintenance. Furthermore, to prevent damage to the storage box 1 caused by collisions, which would affect ink storage, output, and refilling, the four corners of the storage box 1 are protected by the buffer pads 502 in the protective mechanism 5 to prevent damage to the four corners of the storage box 1 due to collisions. At the same time, the honeycomb plate 501 can protect the storage box 1 from collisions. When the storage box 1 falls to the ground, the honeycomb shape can buffer the impact. In addition, to prevent ink from flowing out of the ink outlet 6, a sealing cover 503 is used for threaded connection. The main function of the sealing post 504 is to prevent the threaded connection from being unstable and causing ink to overflow. The sealing ring 505 can further seal the ink outlet 6. The overall mechanism improves the impact protection capability of the storage box 1 and the sealing reliability of the ink outlet 6.

Claims

1. A double-layer anti-backflow sealing structure for regenerated ink cartridges, comprising: Storage box (1), the top of the storage box (1) is provided with an ink filling port (3) and the bottom is provided with an ink outlet (6); The structure is characterized in that it further includes an anti-backflow mechanism (4). The anti-backflow mechanism (4) includes a check box (401), which is connected to the ink outlet (6) via a connecting pipe (409). The check box (401) is rotatably connected to a rotating shaft (402). A baffle plate (403) and a limiting plate (405) are fixedly connected to the rotating shaft (402); A blocking block (406) is fixedly provided on the inner wall of the check box (401), and the blocking block (406) is used to abut against the limiting plate (405) when the rotating shaft (402) rotates in the opposite direction.

2. The double-layer anti-backflow sealing structure for regenerated ink cartridges according to claim 1, characterized in that, The anti-backflow mechanism (4) also includes a fixing frame (404), and a plurality of the anti-backflow boxes (401) are fixedly connected to the fixing frame (404).

3. The double-layer anti-backflow sealing structure for a regenerated ink cartridge according to claim 2, characterized in that, The storage box (1) has a fixed plate groove (408) on its side wall, and a fixed plate (407) is fixedly connected to the side wall of the fixed frame (404). The fixed plate (407) is slidably connected in the fixed plate groove (408).

4. The double-layer anti-backflow sealing structure for regenerated ink cartridges according to claim 1, characterized in that, The structure also includes a protective mechanism (5).

5. The double-layer anti-backflow sealing structure for a regenerated ink cartridge according to claim 4, characterized in that, The protective mechanism (5) includes a honeycomb panel (501) covering the outer surface of the storage box (1).

6. The double-layer anti-backflow sealing structure for a regenerated ink cartridge according to claim 4, characterized in that, The protective mechanism (5) includes cushioning pads (502) disposed at the four corners of the storage box (1).

7. The double-layer anti-backflow sealing structure for a regenerated ink cartridge according to claim 4, characterized in that, The protective mechanism (5) includes a sealing cap (503) for sealing the ink outlet (6), the sealing cap (503) being threadedly connected to the ink outlet (6).

8. The double-layer anti-backflow sealing structure for a regenerated ink cartridge according to claim 7, characterized in that, The protective mechanism (5) further includes a sealing post (504) and a sealing ring (505). The sealing post (504) is inserted into the sealing cover (503), and the sealing ring (505) is sandwiched between the sealing cover (503) and the ink outlet (6).

9. The double-layer anti-backflow sealing structure for a regenerated ink cartridge according to claim 1, characterized in that, The bottom of the storage box (1) is fixedly connected to a bottom pad (2).

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