Filtering device for printing ink conveying pump

Abstract

The utility model relates to the technical field of printing ink delivery pumps, and discloses a filtering device for a printing ink delivery pump, which comprises a movable base, the upper end of the movable base is fixedly connected with a bracket, the upper end of the bracket is fixedly connected with a frame seat, the upper end of the frame seat is fixedly connected with a filtering assembly, and the left side of the filtering assembly is provided with an ink inlet pipe. According to the filtering device for the ink conveying pump, the first filter cylinder and the second filter cylinder filter ink twice, filtered impurities are located in the first filter cylinder and the second filter cylinder, after a filtering assembly is used for a certain time, the filtering assembly can be subjected to back flushing cleaning, a first three-way valve and a second three-way valve are started, an ink inlet pipe and a cleaning outlet pipe are communicated, and therefore the filtering effect is improved. The ink outlet pipe is communicated with the cleaning inlet pipe, the cleaning inlet pipe is connected with external cleaning equipment, cleaning liquid is injected, the cleaning liquid enters the filter shell, the liquid carries out back washing on the second filter cylinder and the first filter cylinder, impurities are discharged along with the cleaning liquid through the cleaning outlet pipe, and washing can be completed without disassembling the filter assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of ink transfer pumps, in particular to a filtering device for an ink transfer pump. Background Art

[0002] Ink is widely used in the printing industry, including fields such as books, magazines, newspapers, packaging, labels, advertising, etc. An ink transfer pump is a device used to transfer ink from a storage container or mixing tank to a printing device. The ink transfer pump needs to use pipe fittings to transfer the ink, and the ink transfer pump usually needs to be equipped with an effective filtering device to ensure that the transferred ink is clean and free of impurities.

[0003] The filtering device of a traditional ink transfer pump is usually not convenient for disassembly and maintenance. It is more difficult to maintain after long-term use. Therefore, a filtering device for an ink transfer pump needs to be designed so that operators can more easily perform repairs and replace internal components, reducing the difficulty and time cost of maintenance. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a filtering device for an ink transfer pump, which can effectively solve the problems in the prior art.

[0005] The technical solution adopted by the utility model is: a filtering device for an ink transfer pump, including a moving base, a bracket is fixedly connected to the upper end of the moving base, a frame base is fixedly connected to the upper end of the bracket, a filtering component is fixedly connected to the upper end of the frame base, an ink inlet pipe is arranged on the left side of the filtering component, the right interface of a three-way valve I is fixedly connected to the left side of the ink inlet pipe, the left interface of the three-way valve I is fixedly connected to an ink transfer pipe I, the rear interface of the three-way valve I is fixedly connected to a cleaning outlet pipe, an ink outlet pipe is arranged on the right side of the filtering component, the left interface of a three-way valve II is fixedly connected to the right side of the ink outlet pipe, the rear interface of the three-way valve II is fixedly connected to a cleaning inlet pipe, the right interface of the three-way valve II is fixedly connected to an ink transfer pipe II, and an ink transfer pump is fixedly connected to the upper end of the moving base;

[0006] The output end of the ink delivery pump is fixedly connected with an ink delivery pipe three, and a controller is arranged at the front end of the bracket; the filtering component includes a filtering shell, a connecting groove, a top cover, a rotating wheel, a connecting convex edge, a sealing edge, a sealing ring, a support column, a clamping seat, a clamping groove, a pressing ring, a mounting edge one, a mounting edge two, a filter cartridge one and a filter cartridge two. A connecting groove is formed in the inner wall of the filtering shell, a top cover is arranged at the upper end of the filtering shell, a rotating wheel is arranged at the upper end of the top cover, a connecting convex edge and a sealing edge are arranged at the lower end of the top cover, a sealing ring is arranged between the connecting convex edge and the sealing edge, a support column is fixedly connected to the lower end of the top cover, a clamping seat is fixedly connected to the lower end of the support column, a clamping groove is formed in the outer side of the clamping seat, a pressing ring is arranged inside the clamping groove, a mounting edge one and a mounting edge two are fixedly connected to the lower end of the clamping seat, and a filter cartridge one and a filter cartridge two are arranged at the lower end of the clamping seat.

[0007] Preferably, threads are provided on both the outer side of the connecting convex edge and the inner wall of the connecting groove. The connecting convex edge is threadedly connected with the filtering shell, and the space between the connecting convex edge and the sealing edge is adapted to the filtering shell.

[0008] Through the above technical solution, the connecting convex edge and the sealing edge are provided. When the top cover is installed on the filtering shell, the groove between the connecting convex edge and the sealing edge is corresponding to the filtering shell. Rotate the rotating wheel to threadedly lock the connecting convex edge with the filtering shell until the upper end of the filtering shell is in tight contact with the sealing ring. The sealing ring is deformed by the force extrusion and fills the gap between the filtering shell, the connecting convex edge and the sealing edge to ensure the sealing performance. The assembly method of threaded connection is convenient for disassembly, and the inside of the filtering shell can be quickly disassembled for maintenance.

[0009] Preferably, the outer diameter of the clamping seat is the same as the inner diameter of the filtering shell, and the outer diameter of the pressing ring is larger than the outer diameter of the clamping seat.

[0010] Through the above technical solution, the pressing ring is provided. When the top cover is installed on the filtering shell, the pressing ring is in interference fit with the filtering shell to seal the gap between the filtering shell and the clamping seat, so that the ink must pass through the filtering when passing through the filtering component. Start the ink delivery pump, and the ink is pumped into the filtering shell through the ink inlet pipe, enters the filter cartridge one between the clamping seat and the top cover, and the ink after secondary filtering by the filter cartridge one and the filter cartridge two is pumped out through the ink outlet pipe, the ink delivery pipe two and the ink delivery pipe three.

[0011] Preferably, both the sealing ring and the pressing ring are made of nitrile rubber.

[0012] Through the above technical solution, the pressing ring made of nitrile rubber is provided, which has strong oil resistance and prolongs the service life.

[0013] Preferably, the mounting edge two is threadedly connected with the filter cartridge two, and the mounting edge one is threadedly connected with the filter cartridge one.

[0014] Through the above technical solution, the filter cartridge two and the filter cartridge one are installed by a threaded connection method, which is convenient for disassembly, replacement, cleaning and maintenance.

[0015] Preferably, the filtration aperture of the first filter cartridge is larger than that of the second filter cartridge, and both the first three-way valve and the second three-way valve adopt "T"-shaped three-way valves.

[0016] Through the above technical solution, the filtration aperture of the first filter cartridge is larger than that of the second filter cartridge, and the ink is filtered twice during filtration. The impurities filtered out are located inside the first filter cartridge and the second filter cartridge, and the first filter cartridge and the second filter cartridge can be detached for maintenance.

[0017] Preferably, the input end of the ink delivery pump is fixedly connected to the outlet pipe, and the controller is electrically connected to the first three-way valve, the second three-way valve, and the ink delivery pump.

[0018] Through the above technical solution, the first three-way valve and the second three-way valve are provided. After the filter assembly is used for a certain period of time, the filter assembly can be backflushed and cleaned. Start the first three-way valve and the second three-way valve to connect the inlet pipe and the cleaning outlet pipe to each other, close the first ink delivery pipe, connect the outlet pipe and the cleaning inlet pipe to each other, close the second ink delivery pipe, connect the cleaning inlet pipe to an external cleaning device, inject cleaning liquid, the cleaning liquid enters the interior of the filter housing, the liquid performs backflushing on the second filter cartridge and the first filter cartridge, and the impurities are discharged through the cleaning outlet pipe along with the cleaning liquid. The cleaning effect is good, and the filter assembly can be flushed without being disassembled.

[0019] Compared with the prior art, the present utility model provides a filtering device for an ink delivery pump, which has the following beneficial effects:

[0020] 1. For the filtering device for an ink delivery pump, a connecting flange and a sealing flange are provided. When the top cover and the filter housing are installed, the groove between the connecting flange and the sealing flange corresponds to the filter housing. Rotate the runner to thread-lock the connecting flange and the filter housing until the upper end of the filter housing is in tight contact with the sealing ring. The sealing ring is deformed by the force extrusion and fills the gap between the filter housing, the connecting flange and the sealing flange to ensure the sealing performance. The assembly method of threaded connection is convenient for disassembly, and the interior of the filter housing can be quickly disassembled for maintenance. When the top cover and the filter housing are installed, the pressing ring and the filter housing are in interference fit to seal the gap between the filter housing and the clamping seat, so that the ink must pass through the filter assembly during filtration. The structure is ingenious. The second filter cartridge and the first filter cartridge are installed by means of threaded connection, which is convenient for disassembly, replacement and maintenance;

[0021] 2. The filtering device for the ink transfer pump has a larger filtering pore size of the first filter cartridge than that of the second filter cartridge, and performs two-stage filtering during ink filtration. The impurities filtered out are located inside the first and second filter cartridges. After the filtering component has been used for a certain period of time, the filtering component can be backflushed and cleaned. By activating the first three-way valve and the second three-way valve, the ink inlet pipe is connected to the cleaning outlet pipe, the first ink delivery pipe is closed, the ink outlet pipe is connected to the cleaning inlet pipe, the second ink delivery pipe is closed, the cleaning inlet pipe is connected to an external cleaning device, and cleaning liquid is injected. The cleaning liquid enters the interior of the filter housing, and the liquid performs backflushing on the second and first filter cartridges. The impurities are discharged through the cleaning outlet pipe along with the cleaning liquid, and the cleaning effect is good. The filter component can be flushed without being disassembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic three-dimensional structure of the present utility model Figure I ;

[0023] Figure 2 is a schematic three-dimensional structure of the present utility model Figure II ;

[0024] Figure 3 is an enlarged schematic structural view of the filtering component of the present utility model;

[0025] Figure 4 is a schematic three-dimensional sectional structural view of the filtering component of the present utility model;

[0026] Figure 5 is a schematic disassembled structural view of the filtering component of the present utility model.

[0027] Wherein: 1. Moving base; 2. Bracket; 3. Frame seat; 4. Filtering component; 401. Filter housing; 402. Connection groove; 403. Top cover; 404. Runner; 405. Connecting flange; 406. Sealing flange; 407. Sealing ring; 408. Support pillar; 409. Clamping seat; 410. Card slot; 411. Compression ring; 412. First mounting edge; 413. Second mounting edge; 414. First filter cartridge; 415. Second filter cartridge; 5. Ink inlet pipe; 6. First three-way valve; 7. First ink delivery pipe; 8. Cleaning outlet pipe; 9. Ink outlet pipe; 10. Second three-way valve; 11. Cleaning inlet pipe; 12. Second ink delivery pipe; 13. Ink transfer pump; 14. Third ink delivery pipe; 15. Controller. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0029] Example 1: As Figures 1-5 shown, the filtering device for an ink delivery pump provided by the present utility model includes a moving base 1. A bracket 2 is fixedly connected to the upper end of the moving base 1. A frame base 3 is fixedly connected to the upper end of the bracket 2. A filtering assembly 4 is fixedly connected to the upper end of the frame base 3. An ink inlet pipe 5 is arranged on the left side of the filtering assembly 4. The right interface of a three-way valve 1 6 is fixedly connected to the left side of the ink inlet pipe 5. The left interface of the three-way valve 1 6 is fixedly connected to an ink delivery pipe 1 7. The rear interface of the three-way valve 1 6 is fixedly connected to a cleaning outlet pipe 8. An ink outlet pipe 9 is arranged on the right side of the filtering assembly 4. The left interface of a three-way valve 2 10 is fixedly connected to the right side of the ink outlet pipe 9. The rear interface of the three-way valve 2 10 is fixedly connected to a cleaning inlet pipe 11. The right interface of the three-way valve 2 10 is fixedly connected to an ink delivery pipe 2 12. An ink delivery pump 13 is fixedly connected to the upper end of the moving base 1;

[0030] The output end of the ink delivery pump 13 is fixedly connected to an ink delivery pipe 3 14. A controller 15 is arranged at the front end of the bracket 2. The filtering assembly 4 includes a filtering shell 401, a connecting groove 402, a top cover 403, a runner 404, a connecting flange 405, a sealing flange 406, a sealing ring 407, a support column 408, a clamping seat 409, a clamping groove 410, a pressing ring 411, a mounting flange 1 412, a mounting flange 2 413, a filter cartridge 1 414 and a filter cartridge 2 415. A connecting groove 402 is formed on the inner wall of the filtering shell 401. A top cover 403 is arranged at the upper end of the filtering shell 401. A runner 404 is arranged at the upper end of the top cover 403. A connecting flange 405 and a sealing flange 406 are arranged at the lower end of the top cover 403. A sealing ring 407 is arranged between the connecting flange 405 and the sealing flange 406. The lower end of the top cover 403 is fixedly connected to a support column 408. The lower end of the support column 408 is fixedly connected to a clamping seat 409. A clamping groove 410 is formed on the outer side of the clamping seat 409. A pressing ring 411 is arranged inside the clamping groove 410. The lower end of the clamping seat 409 is fixedly connected to a mounting flange 1 412 and a mounting flange 2 413. A filter cartridge 1 414 and a filter cartridge 2 415 are arranged at the lower end of the clamping seat 409.

[0031] Specifically, threads are provided on both the outer side of the connecting flange 405 and the inner wall of the connecting groove 402. The connecting flange 405 is threadedly connected to the filtering shell 401. The space between the connecting flange 405 and the sealing flange 406 is adapted to the filtering shell 401. The advantage is that the connecting flange 405 and the sealing flange 406 are provided. When the top cover 403 is installed on the filtering shell 401, the groove between the connecting flange 405 and the sealing flange 406 is aligned with the filtering shell 401. The runner 404 is rotated to threadedly lock the connecting flange 405 to the filtering shell 401 until the upper end of the filtering shell 401 is in tight contact with the sealing ring 407. The sealing ring 407 is deformed by the force, filling the gap between the filtering shell 401, the connecting flange 405 and the sealing flange 406 to ensure the sealing performance. The assembly method of threaded connection is convenient for disassembly, and the inside of the filtering shell 401 can be quickly disassembled for maintenance.

[0032] Specifically, the outer diameter of the card seat 409 is the same as the inner diameter of the filter housing 401, and the outer diameter of the pressing ring 411 is larger than the outer diameter of the card seat 409. The advantage is that the pressing ring 411 is provided. When the top cover 403 and the filter housing 401 are installed, the pressing ring 411 is interference-fitted with the filter housing 401 to seal the gap between the filter housing 401 and the card seat 409, so that the ink must pass through the filtration when passing through the filtration assembly 4. Start the ink delivery pump 13, and the ink is pumped into the filter housing 401 through the ink inlet pipe 5, enters the first filter cartridge 414 between the card seat 409 and the top cover 403, and the ink after being filtered twice by the first filter cartridge 414 and the second filter cartridge 415 is pumped out after passing through the ink outlet pipe 9, the second ink delivery pipe 12 and the third ink delivery pipe 14.

[0033] Embodiment 2: As Figures 2-5 shown, as an improvement over the previous embodiment.

[0034] Specifically, both the sealing ring 407 and the pressing ring 411 are made of nitrile rubber. The advantage is that the pressing ring 411 made of nitrile rubber is provided, which has strong oil resistance and extends the service life.

[0035] Specifically, the second mounting edge 413 is threadedly connected to the second filter cartridge 415, and the first mounting edge 412 is threadedly connected to the first filter cartridge 414. The advantage is that the second filter cartridge 415 and the first filter cartridge 414 are installed by means of threaded connection, which is convenient for disassembly, replacement, cleaning and maintenance.

[0036] Specifically, the filtration aperture of the first filter cartridge 414 is larger than that of the second filter cartridge 415, and both the first three-way valve 6 and the second three-way valve 10 are "T"-shaped three-way valves. The advantage is that the filtration aperture of the first filter cartridge 414 is larger than that of the second filter cartridge 415, and the ink is filtered twice during filtration. The filtered impurities are located inside the first filter cartridge 414 and the second filter cartridge 415, and the first filter cartridge 414 and the second filter cartridge 415 can be disassembled for maintenance.

[0037] Working principle: During installation, align the groove between the connecting convex edge 405 and the sealing edge 406 with the filter housing 401. Rotate the rotating wheel 404 to thread-lock the connecting convex edge 405 with the filter housing 401 until the upper end of the filter housing 401 is in tight contact with the sealing ring 407. The sealing ring 407 is deformed under pressure and fills the gap between the filter housing 401, the connecting convex edge 405, and the sealing edge 406 to ensure sealing. The pressing ring 411 is press-fitted with the filter housing 401 to seal the gap between the filter housing 401 and the clamping seat 409. When in use, start the ink delivery pump 13 through the controller 15. When the first three-way valve 6 and the second three-way valve 10 are not powered on, the ink inlet pipe 5 is interconnected with the first ink delivery pipe 7, and the ink outlet pipe 9 is interconnected with the second ink delivery pipe 12. Ink is pumped into the filter housing 401 from the ink inlet pipe 5, enters the first filter cartridge 414 between the clamping seat 409 and the top cover 403, and the ink after secondary filtration through the first filter cartridge 414 and the second filter cartridge 415 is pumped out after passing through the ink outlet pipe 9, the second ink delivery pipe 12, and the third ink delivery pipe 14. The filtration aperture of the first filter cartridge 414 is larger than that of the second filter cartridge 415, and two-stage filtration is performed during ink filtration. After the filter assembly 4 has been used for a certain period of time, the filter assembly 4 can be backflushed and cleaned. Start the first three-way valve 6 and the second three-way valve 10 to interconnect the ink inlet pipe 5 with the cleaning outlet pipe 8, block the first ink delivery pipe 7, interconnect the ink outlet pipe 9 with the cleaning inlet pipe 11, block the second ink delivery pipe 12, connect the cleaning inlet pipe 11 to an external cleaning device, inject cleaning liquid, the cleaning liquid enters the interior of the filter housing 401, the liquid performs backflushing on the second filter cartridge 415 and the first filter cartridge 414, and impurities are discharged through the cleaning outlet pipe 8 with the cleaning liquid. The cleaning effect is good, and the filter assembly 4 can be flushed without disassembly. The second filter cartridge 415 and the first filter cartridge 414 are installed by means of threaded connection, which is convenient for disassembly and replacement.

[0038] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Filter device for an ink delivery pump, comprising a moving base (1), characterized in that: The upper end of the mobile base (1) is fixedly connected with a bracket (2), the upper end of the bracket (2) is fixedly connected with a frame base (3), the upper end of the frame base (3) is fixedly connected with a filtering assembly (4), a ink inlet pipe (5) is arranged on the left side of the filtering assembly (4), the right interface of a three-way valve one (6) is fixedly connected to the left side of the ink inlet pipe (5), the left interface of the three-way valve one (6) is fixedly connected with an ink conveying pipe one (7), the rear interface of the three-way valve one (6) is fixedly connected with a cleaning outlet pipe (8), an ink outlet pipe (9) is arranged on the right side of the filtering assembly (4), the left interface of a three-way valve two (10) is fixedly connected to the right side of the ink outlet pipe (9), the rear interface of the three-way valve two (10) is fixedly connected with a cleaning inlet pipe (11), the right interface of the three-way valve two (10) is fixedly connected with an ink conveying pipe two (12), and an ink conveying pump (13) is fixedly connected to the upper end of the mobile base (1). The output end of the ink conveying pump (13) is fixedly connected with an ink conveying pipe three (14), and a controller (15) is arranged at the front end of the bracket (2); the filtering assembly (4) includes a filtering shell (401), a connecting groove (402), a top cover (403), a runner (404), a connecting convex edge (405), a sealing edge (406), a sealing ring (407), a support column (408), a clamping seat (409), a clamping groove (410), a pressing ring (411), a mounting edge one (412), a mounting edge two (413), a filter cartridge one (414) and a filter cartridge two (415). A connecting groove (402) is formed in the inner wall of the filtering shell (401), a top cover (403) is arranged at the upper end of the filtering shell (401), a runner (404) is arranged at the upper end of the top cover (403), a connecting convex edge (405) and a sealing edge (406) are arranged at the lower end of the top cover (403), a sealing ring (407) is arranged between the connecting convex edge (405) and the sealing edge (406), a support column (408) is fixedly connected to the lower end of the top cover (403), a clamping seat (409) is fixedly connected to the lower end of the support column (408), a clamping groove (410) is formed on the outer side of the clamping seat (409), a pressing ring (411) is arranged inside the clamping groove (410), a mounting edge one (412) and a mounting edge two (413) are fixedly connected to the lower end of the clamping seat (409), and a filter cartridge one (414) and a filter cartridge two (415) are arranged at the lower end of the clamping seat (409).

2. The filtering device for an ink delivery pump according to claim 1, characterized in that: Threads are provided on both the outer side of the connecting convex edge (405) and the inner wall of the connecting groove (402), and the connecting convex edge (405) is in threaded connection with the filtering shell (401). The space between the connecting convex edge (405) and the sealing edge (406) is adapted to the filtering shell (401).

3. The filtering device for an ink delivery pump according to claim 1, characterized in that: The outer diameter of the clamping seat (409) is the same as the inner diameter of the filtering shell (401), and the outer diameter of the pressing ring (411) is larger than the outer diameter of the clamping seat (409).

4. The filtering device for an ink delivery pump according to claim 1, wherein: Both the sealing ring (407) and the pressing ring (411) are made of nitrile rubber.

5. The filtering device for an ink delivery pump according to claim 1, wherein: The installation edge two (413) is threadedly connected to the filter cartridge two (415), and the installation edge one (412) is threadedly connected to the filter cartridge one (414).

6. The filtering device for an ink delivery pump according to claim 1, characterized in that: The filtration aperture of the filter cartridge one (414) is larger than that of the filter cartridge two (415), and both the three-way valve one (6) and the three-way valve two (10) adopt "T"-shaped three-way valves.

7. The filtering device for an ink delivery pump according to claim 1, characterized in that: The input end of the ink delivery pump (13) is fixedly connected to the ink outlet pipe (9), and the controller (15) is electrically connected to the three-way valve one (6), the three-way valve two (10), and the ink delivery pump (13).

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