Filtering device for UV ink-jet ink

Abstract

The utility model relates to the technical field of UV ink-jet ink filtering, in particular to a filtering device for UV ink-jet ink. The filtering device for the UV ink-jet ink comprises a bottom frame, a connecting frame, a first filtering net, a discharging pipe, a frame body, a feeding pipe, a second filtering net, a rotating shaft, a scraping plate, a connecting rod, a lifting frame, a power assembly and a shaking assembly, the top of the bottom frame is connected with the connecting frame, the top of the connecting frame is connected with the frame body, the right side of the top of the frame body is connected with the feeding pipe, and the right side of the top of the frame body is connected with the second filtering net. A discharging pipe is connected to the middle of the bottom of the connecting frame, and a second filter screen is connected to the upper side in the connecting frame. When the scraper rotates to clean the second filter screen, the bulges on the lifting frame are repeatedly pushed into the filter holes of the second filter screen through the lifting frame which shakes up and down, so that blockages can be loosened from the filter holes, the blockages can be more easily scraped by the scraper, the blockages, especially particles which are embedded deeply, can be more thoroughly cleaned, and residues are reduced.

Description

Technical Field

[0001] This utility model relates to the field of UV inkjet ink filtration technology, and in particular to a filtration device for UV inkjet ink. Background Technology

[0002] UV inkjet inks need to be ejected through tiny printheads during the printing process, so the purity of the ink is extremely important. Any impurities can clog the printheads, affecting print quality and machine lifespan. To ensure ink quality, filtration devices are typically used to remove particulate matter, sediment, and other impurities from the ink.

[0003] As the filtration process continues, the filter screen in the filtration unit may gradually become clogged, leading to a decrease in filtration efficiency. Therefore, regular cleaning using a cleaning device is necessary. Traditional cleaning devices typically use mechanical scrapers to remove impurities from the filter screen. These scrapers are usually installed inside the filtration unit and are driven by a motor to move periodically, scraping off particles adhering to the filter screen surface. However, because the scraper relies primarily on physical scraping to remove clogs from the filter screen surface, its cleaning effect is limited for deeply embedded or highly adhesive particles. This results in the need for multiple scrapings to achieve the desired cleaning effect, increasing cleaning time and costs. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings, the technical problem of this utility model is to provide a filter device for UV inkjet ink.

[0005] The technical solution is as follows: A filtration device for UV inkjet ink includes a base frame, a connecting frame, a first filter screen, an outlet pipe, a frame body, an inlet pipe, a second filter screen, a rotating shaft, a scraper, a connecting rod, a lifting frame, a power component, and a vibration component. The connecting frame is connected to the top of the base frame, and the frame body is connected to the top of the connecting frame. The inlet pipe is connected to the top right side of the frame body, and the outlet pipe is connected to the bottom middle of the connecting frame. The second filter screen is connected to the upper side of the connecting frame, and the first filter screen is connected to the lower side of the connecting frame. The rotating shaft is rotatably connected to the middle of the frame body, and the scraper is connected to the bottom of the rotating shaft. The scraper is in close contact with the top surface of the second filter screen. The connecting rod is slidably connected inside the rotating shaft, passes through the rotating shaft, and is connected to the bottom of the lifting frame. The lifting frame is located below the second filter screen and in front of the scraper. The vibration component and the power component are provided on the top of the frame body.

[0006] To further explain, the top surface of the lifting frame has multiple protrusions that engage with the filter holes of the second filter screen.

[0007] To further explain, a compartment is provided on the left side of the connecting frame, and the rotating shaft is located inside the compartment and is not connected to the internal cavity of the frame. However, the scraper is connected to the cavity, and the position where the second filter screen fits into the compartment is open.

[0008] To further explain, the power assembly includes a motor, pulleys, and a flat belt. The motor is installed on the top left side of the frame, and pulleys are connected to both the motor output shaft and the upper side of the rotating shaft. A flat belt is wound between the pulleys.

[0009] To further explain, the vibration assembly includes a connecting frame, a connecting plate, and a spring. The connecting frame is connected to the top of the frame near the rotating shaft. The bottom surface of the connecting frame has multiple semi-circular grooves. The top of the connecting rod is connected to the connecting plate. A semi-circular part is provided on one side of the top of the connecting plate. The semi-circular part contacts and engages with the semi-circular groove on the connecting frame. A spring connects the connecting rod to the inside of the rotating shaft.

[0010] To further explain, it also includes a collection frame, which is slidably connected to the left side of the connecting frame. The collection frame is connected to the compartment of the frame, and its top surface is in contact with the bottom surface of the scraper, with the scraper blocking the collection frame.

[0011] The beneficial effects of this utility model are: 1. When the scraper rotates to clean the second filter screen, the protrusions on the lifting frame that shakes up and down repeatedly push into the filter holes of the second filter screen, which can loosen the blockage from the filter holes and make it easier for the scraper to remove it. This can remove the blockage more thoroughly, especially those particles that are embedded deeply, thereby reducing the residue.

[0012] 2. The lifting frame's raised vibration action ensures that each filter hole is thoroughly cleaned, avoiding the problem of incomplete cleaning in certain areas that may occur with traditional scrapers. This not only improves the uniformity of cleaning but also ensures the cleaning effect on the entire surface of the second filter screen. Attached Figure Description

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0014] Figure 2 This is a partial sectional view of the first embodiment of this utility model.

[0015] Figure 3 This is a partial three-dimensional structural diagram of the present invention.

[0016] Figure 4 This is a second partial sectional view of the present invention.

[0017] In the attached diagram: 1-base frame, 2-connecting frame, 3-first filter screen, 4-discharge pipe, 5-frame, 6-feed pipe, 7-second filter screen, 8-motor, 9-pulley, 10-flat belt, 11-rotating shaft, 12-scraper, 13-collecting frame, 14-connecting frame, 15-connecting disc, 16-connecting rod, 17-spring, 18-lifting frame. Detailed Implementation

[0018] The above-described solution will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of this application. The implementation conditions used in the embodiments may be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are generally those in routine experiments.

[0019] Example: A filter device for UV inkjet ink, such as Figure 1-Figure 4 As shown, the system includes a base frame 1, a connecting frame 2, a first filter screen 3, a discharge pipe 4, a frame 5, a feed pipe 6, a second filter screen 7, a rotating shaft 11, a scraper 12, a connecting rod 16, a lifting frame 18, a power assembly, and a vibration assembly. The connecting frame 2 is connected to the top of the base frame 1, and the frame 5 is connected to the top of the connecting frame 2. The feed pipe 6 is connected to the top right side of the frame 5, and the discharge pipe 4 is connected to the bottom center of the connecting frame 2. A second filter screen 7 for primary ink filtration is detachably connected to the upper side of the connecting frame 2, and a first filter screen 3 for secondary ink filtration is detachably connected to the lower side of the connecting frame 2. The filter holes of the first filter screen 3 are smaller than those of the second filter screen 7. A rotating shaft is rotatably connected to the middle of the frame 5. 11. A scraper 12 for cleaning blockages is connected to the bottom of the rotating shaft 11. The scraper 12 is in close contact with the top surface of the second filter screen 7. A compartment is provided on the left side of the connecting frame 2. The rotating shaft 11 is located in the compartment and is not in communication with the internal cavity of the frame 5. The scraper 12 is in communication with the cavity. The position on the second filter screen 7 that is in contact with the compartment is open. A connecting rod 16 is slidably connected inside the rotating shaft 11. The connecting rod 16 passes through the rotating shaft 11 and is connected to the bottom of the lifting frame 18. The lifting frame 18 is located below the second filter screen 7 and in front of the scraper 12. The top surface of the lifting frame 18 is provided with multiple protrusions for cleaning the filter holes. The protrusions cooperate with the filter holes of the second filter screen 7. A shaking component and a power component are provided on the top of the frame 5.

[0020] like Figure 1-Figure 3 As shown, the power assembly includes a motor 8, pulleys 9, and a flat belt 10. The motor 8 is bolted to the top left side of the frame 5. The output shaft of the motor 8 and the upper side of the rotating shaft 11 are both connected to pulleys 9. A flat belt 10 for transmitting power is wound between the pulleys 9.

[0021] like Figure 1 , Figure 2 and Figure 4 As shown, the vibration assembly includes a connecting frame 14, a connecting plate 15, and a spring 17. The connecting frame 14 is connected to the top of the frame 5 near the rotating shaft 11. The bottom surface of the connecting frame 14 has multiple semi-circular grooves. The top of the connecting rod 16 is connected to the connecting plate 15. A semi-circular part is provided on one side of the top of the connecting plate 15. The semi-circular part contacts and engages with the semi-circular groove on the connecting frame 14. A spring 17 is connected between the connecting rod 16 and the inside of the rotating shaft 11.

[0022] like Figure 1 and Figure 2As shown, it also includes a collection frame 13. The left side of the connecting frame 2 is slidably connected to the collection frame 13 for collecting impurities and blockages. The collection frame 13 is connected to the compartment of the frame 5, and its top surface is in contact with the bottom surface of the scraper 12. The scraper 12 blocks the collection frame 13, so that the ink will not flow into the collection frame 13 during normal ink filtration.

[0023] When filtering ink, first connect the external pipe to the feed pipe 6 and connect the pump pipe to the discharge pipe 4. Ink is injected into the frame 5 through the feed pipe 6. The ink will pass through the second filter screen 7 for the first filtration, which can remove larger particles, such as dust or incompletely dissolved pigment particles. After filtration, it passes through the first filter screen 3 for the second filtration, which can remove even finer particles. Finally, the filtered ink flows into the discharge pipe 4, and the pump draws the filtered ink into the collection container. This can achieve multi-stage filtration of ink.

[0024] As the filtration process proceeds, the filter pores of the second filter screen 7 will gradually become clogged, reducing efficiency. When cleaning is required, first ensure that all ink inside the device has been filtered before starting the motor 8. The output shaft of the motor 8 transmits power to the rotating shaft 11 through the cooperation of the pulley 9 and the flat belt 10. The rotation of the rotating shaft 11 drives the scraper 12, connecting rod 16, connecting plate 15, and lifting frame 18 to rotate as a whole. When the connecting plate 15 rotates, its semi-circular parts will contact the semi-circular grooves on the connecting frame 14 one by one, pushing the connecting plate 15 up and down through the semi-circular grooves. The spring 17 repeatedly deforms and recovers... The position of the motor 8 causes the connecting rod 16 and the lifting frame 18 to move up and down. The protrusion on the lifting frame 18 will insert into the filter holes of the second filter screen 7, thereby pushing out the particles that are blocking the filter holes. Then, the scraper 12 rotates to push the blockage, thus achieving a fine cleaning of the second filter screen 7. When rotating once, the scraper 12 pushes the blockage into the collection frame 13. The output shaft of the motor 8 can be controlled to rotate multiple times to clean the second filter screen 7 multiple times. After cleaning, the scraper 12 is controlled to return to the initial position, and then the motor 8 is turned off. Finally, the collection frame 13 is taken out to clean the impurities inside.

[0025] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Therefore, all equivalent changes made based on the content described in the claims of the present utility model should be included within the scope of the claims of the present utility model.

Claims

1. A filter device for UV inkjet ink, characterized in that: The system includes a base frame (1), a connecting frame (2), a first filter screen (3), a discharge pipe (4), a frame (5), a feed pipe (6), a second filter screen (7), a rotating shaft (11), a scraper (12), a connecting rod (16), a lifting frame (18), a power assembly, and a vibration assembly. The base frame (1) is connected to the top of the connecting frame (2), the connecting frame (2) is connected to the top of the frame (5), the feed pipe (6) is connected to the top right side of the frame (5), the discharge pipe (4) is connected to the bottom middle of the connecting frame (2), and the second filter screen is connected to the upper side inside the connecting frame (2). 7) A first filter screen (3) is connected to the lower side of the connecting frame (2). A rotating shaft (11) is rotatably connected to the middle of the frame (5). A scraper (12) is connected to the bottom of the rotating shaft (11). The scraper (12) is close to the top surface of the second filter screen (7). A connecting rod (16) is slidably connected inside the rotating shaft (11). The connecting rod (16) passes through the rotating shaft (11) and is connected to the bottom of the lifting frame (18). The lifting frame (18) is located below the second filter screen (7) and in front of the scraper (12). A shaking component and a power component are provided on the top of the frame (5).

2. The filtration device for UV inkjet ink according to claim 1, characterized in that: The top surface of the lifting frame (18) is provided with multiple protrusions, which are matched with the filter holes of the second filter screen (7).

3. A filter device for UV inkjet ink according to claim 2, characterized in that: The connecting frame (2) has a compartment on the left side, the rotating shaft (11) is located in the compartment and is not connected to the internal cavity of the frame (5), while the scraper (12) is connected to the cavity, and the position of the second filter screen (7) that is in contact with the compartment is open.

4. A filter device for UV inkjet ink according to claim 3, characterized in that: The power assembly includes a motor (8), pulleys (9) and a flat belt (10). The motor (8) is installed on the top left side of the frame (5). The output shaft of the motor (8) and the upper side of the rotating shaft (11) are both connected to pulleys (9). A flat belt (10) is wound between the pulleys (9).

5. A filter device for UV inkjet ink according to claim 4, characterized in that: The shaking assembly includes a connecting frame (14), a connecting plate (15), and a spring (17). The connecting frame (14) is connected to the top of the frame (5) near the rotating shaft (11). The bottom surface of the connecting frame (14) has multiple semi-circular grooves. The top of the connecting rod (16) is connected to the connecting plate (15). A semi-circular part is provided on one side of the top of the connecting plate (15). The semi-circular part contacts and engages with the semi-circular groove on the connecting frame (14). A spring (17) is connected between the connecting rod (16) and the inside of the rotating shaft (11).

6. A filter device for UV inkjet ink according to claim 5, characterized in that: It also includes a collection frame (13), which is slidably connected to the left side of the connecting frame (2). The collection frame (13) is connected to the compartment of the frame (5), and its top surface is in contact with the bottom surface of the scraper (12). The scraper (12) blocks the collection frame (13).

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