Filtering device for offset printing fountain solution

Abstract

The utility model relates to the technical field of fountain solution filtration, and discloses an offset printing fountain solution filtering device which comprises a filtering tank, a tank cover is arranged at the upper end of the filtering tank, a liquid inlet pipe is arranged at the upper end of the tank cover, the lower end of the outer side of the filtering tank is communicated with a liquid outlet pipe, and a filtering mechanism is arranged on the inner side of the filtering tank. A filtering mechanism is arranged in the filtering tank and used for filtering the fountain solution entering the filtering tank, a cleaning mechanism is arranged in the liquid inlet pipe and used for cleaning the filtering mechanism, the filtering mechanism comprises a mounting frame and a filtering net, the mounting frame is arranged in the filtering tank, and the filtering net is arranged on the inner side of the mounting frame and used for filtering the fountain solution; the cleaning mechanism comprises a mounting plate, a rotating rod, a rotating blade and a cleaning brush; the mounting plate is arranged at the lower end in the tank cover; when the fountain solution filtering device is used, the filter screen can be automatically cleaned while the fountain solution is filtered, so that the cleaning effect on the filter screen is better, and the filtering effect on the fountain solution cannot be influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of fountain solution filtration, in particular to a filtering device for offset printing fountain solution. Background Art

[0002] During the printing process, offset printing fountain solution plays a role in dampening, moisturizing, and preventing ink condensation. Since the recovered offset printing fountain solution may contain some solid particles or impurities, it needs to be filtered before it can be reused.

[0003] For example, the Chinese utility model patent with the announcement number "CN212523307U" discloses "a fully automatic fountain solution waste liquid filtering device, comprising a liquid box, a filter box is provided on one side of the liquid box, a cleaning mechanism is fixedly provided inside the filter box; the cleaning mechanism comprises a conical filter screen, a semi-annular frame is provided on the outer side of the filter box, a plurality of through holes are provided on the filter box, and an ink absorbing sponge is provided inside the filter box. The utility model can clean the solid impurities in the cavity by pulling the semi-annular frame outward, and pull the ink absorbing sponge outward. At the same time, the handle is pulled, and the handle drives the two U-shaped rods to move toward the ink absorbing sponge through the traction rope, and then the U-shaped rod drives the cylinder to clamp the ink absorbing sponge. The ink in the ink absorbing sponge can be discharged by pulling the ink absorbing sponge back and forth, thereby avoiding the replacement of the filter screen and the ink absorbing sponge, and saving production costs."

[0004] Regarding the aforementioned related technologies, the method of allowing impurities to naturally fall along the conical filter screen onto the inner wall of the filter box is ineffective. Because the fountain solution continuously flows during the filtration process, impurities often fail to fall completely along the filter screen and instead accumulate on the filter surface or inner wall, blocking the filtration channel and affecting the filtration effect of the fountain solution. Therefore, those skilled in the art have provided a filtering device for offset printing fountain solution to address the problems raised in the aforementioned background technology.

[0005] The above information disclosed in this background technology is only used to increase the understanding of the background technology of this application. Therefore, it may contain information that does not constitute the prior art known to ordinary technicians in this field. Utility Model Content

[0006] In order to solve the problem that the treatment effect is poor by allowing impurities to naturally fall along the conical filter screen to the inner wall of the filter box, since the fountain solution continues to flow during the filtration process, impurities often cannot fall completely along the filter screen smoothly, but will accumulate on the surface or inner wall of the filter screen, thereby blocking the filter channel, which will affect the filtration effect of the fountain solution, the utility model provides a filtering device for offset printing fountain solution.

[0007] The filtering device for offset printing fountain solution provided by the utility model adopts the following technical solution: the filtering device for offset printing fountain solution comprises:

[0008] The filter tank has a tank cover at its upper end, a liquid inlet pipe at the upper end of the tank cover, and a liquid outlet pipe at the lower end of the outer side of the filter tank;

[0009] A filtering mechanism is provided inside the filter tank and is used to filter the fountain solution entering the filter tank; and

[0010] The cleaning mechanism is arranged inside the liquid inlet pipe and is used for cleaning the filtering mechanism.

[0011] Preferably, the filter mechanism includes a mounting frame and a filter screen. The mounting frame is arranged inside the filter tank, and the filter screen is arranged inside the mounting frame for filtering the fountain solution.

[0012] Preferably, the cleaning mechanism comprises

[0013] The mounting plate is arranged at the lower end of the inner part of the tank cover, and a rotating rod is rotatably arranged at the bottom end thereof, and the bottom end of the rotating rod is rotatably connected to the upper end of the mounting frame;

[0014] A rotating blade is provided on the outer upper end of the rotating rod and is used to drive the rotating rod to rotate; and

[0015] The cleaning brush is arranged at the lower end of the outer side of the rotating rod, and the bottom end of the cleaning brush is in contact with the upper end of the filter screen, and is used for cleaning the filter screen.

[0016] Preferably, the filter tank is provided with a plurality of discharge ports distributed in a circular array, a collecting cover is provided on the outside of the filter tank at the discharge port, and the bottom end of the collecting cover is connected to a discharge pipe.

[0017] Preferably, a sealing cover is provided at the upper end of the liquid inlet pipe, and a valve is provided on the liquid outlet pipe.

[0018] Preferably, two symmetrically distributed mounting blocks are provided on the outer sides of the filter tank and the tank cover, and the two corresponding mounting blocks are connected by locking bolts.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] Through the above technical solution, the filtering device for offset printing fountain solution disclosed by the utility model is provided with a filtering mechanism, a cleaning mechanism, a discharge port and a collecting cover, and the filter net is used to conveniently filter the fountain solution entering the filter tank. At this time, the filter net can be automatically cleaned by using rotating blades, rotating rods and cleaning brushes, so that the cleaning effect of the filter net is better, and it will not affect the filtering effect of the fountain solution, thereby greatly improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of the utility model;

[0022] Figure 2 This is a schematic cross-sectional view of the utility model;

[0023] Figure 3 It is a schematic diagram of the local structure of the present utility model.

[0024] Explanation of the accompanying symbols: 1. Filter tank; 2. Tank cover; 3. Liquid inlet pipe; 4. Liquid outlet pipe; 5. Filter mechanism; 501. Mounting frame; 502. Filter screen; 6. Cleaning mechanism; 601. Mounting plate; 602. Rotating rod; 603. Rotating blade; 604. Cleaning brush; 7. Discharge port; 8. Collecting cover; 9. Discharge pipe; 10. Sealing cover; 11. Valve; 12. Mounting block; 13. Locking bolt. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] The embodiment of the utility model discloses a filtering device for offset printing fountain solution. Figure 1-3 , a filtering device for offset printing fountain solution, comprising a filter tank 1, a tank cover 2 is provided at the upper end of the filter tank 1, a liquid inlet pipe 3 is provided at the upper end of the tank cover 2, a liquid outlet pipe 4 is connected to the lower end of the outer side of the filter tank 1, a filtering mechanism 5 is provided on the inner side of the filter tank 1 for filtering the fountain solution entering the interior of the filter tank 1, and a cleaning mechanism 6 is provided inside the liquid inlet pipe 3 for cleaning the filtering mechanism 5;

[0027] Reference Figure 3 The filter mechanism 5 includes a mounting frame 501 and a filter screen 502 . The mounting frame 501 is disposed inside the filter tank 1 , and the filter screen 502 is disposed inside the mounting frame 501 for filtering the fountain solution.

[0028] By adopting the above technical solution, after the fountain solution enters the interior of the filter tank 1 through the tank cover 2 , the filter screen 502 can be used to filter the fountain solution.

[0029] Reference Figure 3The cleaning mechanism 6 includes a mounting plate 601, a rotating rod 602, a rotating blade 603 and a cleaning brush 604. The mounting plate 601 is arranged at the lower end of the inner part of the tank cover 2. The bottom end of the mounting plate 601 is rotatably provided with a rotating rod 602, and the bottom end of the rotating rod 602 is rotatably connected to the upper end of the mounting frame 501. The rotating blade 603 is arranged at the upper end of the outer side of the rotating rod 602 for driving the rotating rod 602 to rotate. The cleaning brush 604 is arranged at the lower end of the outer side of the rotating rod 602, and the bottom end of the cleaning brush 604 is in contact with the upper end of the filter screen 502 for cleaning the filter screen 502.

[0030] By adopting the above technical solution, in the process of the dampening liquid entering the filter tank 1 through the tank cover 2, the impact of the dampening liquid on the rotating blade 603 will cause the rotating blade 603 to rotate. The rotation of the rotating blade 603 can drive the rotating rod 602 to rotate. The rotation of the rotating rod 602 drives the cleaning brush 604 to rotate. The cleaning brush 604 can automatically clean the filter screen 502, so that the filter screen 502 is not easily blocked during use.

[0031] Reference Figure 1 and Figure 2 The filter tank 1 is provided with a plurality of discharge ports 7 distributed in a circular array. A collecting cover 8 is provided on the outside of the filter tank 1 at the discharge port 7, and a discharge pipe 9 is connected to the bottom end of the collecting cover 8.

[0032] By adopting the above technical solution, the impurities cleaned from the filter 502 can enter the interior of the collection cover 8 through the discharge port 7 and then be discharged through the discharge pipe 9, making it convenient to handle the impurities.

[0033] Reference Figure 1 A sealing cover 10 is provided at the upper end of the liquid inlet pipe 3, and a valve 11 is provided on the liquid outlet pipe 4.

[0034] By adopting the above technical solution, the sealing cover 10 is used to seal the tank cover 2 . After the fountain solution is filtered, the valve 11 is opened, and the fountain solution can be discharged through the liquid outlet pipe 4 .

[0035] Reference Figure 1 Two symmetrically distributed mounting blocks 12 are provided on the outside of the filter tank 1 and the tank cover 2, and the corresponding two mounting blocks 12 are connected by locking bolts 13.

[0036] By adopting the above technical solution, the tank cover 2 and the filter tank 1 are conveniently separated by using the locking bolt 13, so that the cleaning brush 604 can be conveniently maintained or replaced regularly.

[0037] Working principle: When the utility model is in use, the fountain solution is poured into the interior of the tank cover 2 when it is recovered and filtered. After the fountain solution enters the tank cover 2, it will enter the interior of the filter tank 1. At this time, the fountain solution can be filtered using the filter screen 502. In the process of the fountain solution entering the filter tank 1 through the tank cover 2, the fountain solution impacts the rotating blade 603, causing the rotating blade 603 to rotate. The rotation of the rotating blade 603 can drive the rotating rod 602 to rotate, and the rotation of the rotating rod 602 drives the cleaning brush 604 to rotate. The cleaning brush 604 can automatically clean the filter screen 502, so that the filter screen 502 is not prone to clogging during use. Then, the impurities cleaned out of the filter screen 502 can enter the interior of the collection cover 8 through the discharge port 7, and finally be discharged through the discharge pipe 9.

[0038] When the utility model is in use, the filter screen 502 can be automatically cleaned while filtering the fountain solution, so that the cleaning effect of the filter screen 502 is better, and the filtering effect of the fountain solution is not affected.

[0039] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A filtering device for offset printing fountain solution, characterized in that: include A filter tank (1) is provided with a tank cover (2) at its upper end, a liquid inlet pipe (3) is provided at the upper end of the tank cover (2), and a liquid outlet pipe (4) is connected to the lower end of the outer side of the filter tank (1); A filtering mechanism (5) is arranged inside the filtering tank (1) and is used to filter the fountain solution entering the filtering tank (1); and The cleaning mechanism (6) is arranged inside the liquid inlet pipe (3) and is used for cleaning the filtering mechanism (5).

2. The filtering device for offset printing fountain solution according to claim 1, characterized in that: The filtering mechanism (5) comprises a mounting frame (501) and a filtering net (502); the mounting frame (501) is arranged inside the filtering tank (1); the filtering net (502) is arranged inside the mounting frame (501) and is used to filter the fountain solution.

3. The filtering device for offset printing fountain solution according to claim 2, characterized in that: Cleaning mechanism (6) includes The mounting plate (601) is arranged at the lower end of the inner part of the tank cover (2), and a rotating rod (602) is rotatably arranged at the bottom end thereof, and the bottom end of the rotating rod (602) is rotatably connected to the upper end of the mounting frame (501); A rotating blade (603) is disposed on the upper end of the outer side of the rotating rod (602) and is used to drive the rotating rod (602) to rotate; and A cleaning brush (604) is arranged at the lower end of the outer side of the rotating rod (602), and its bottom end is in contact with the upper end of the filter screen (502), and is used to clean the filter screen (502).

4. The filtering device for offset printing fountain solution according to claim 1, characterized in that: The filter tank (1) is provided with a plurality of discharge ports (7) distributed in a circumferential array, a collecting hood (8) is provided on the outside of the filter tank (1) at the discharge port (7), and a discharge pipe (9) is connected to the bottom end of the collecting hood (8).

5. The filtering device for offset printing fountain solution according to claim 1, characterized in that: A sealing cover (10) is provided at the upper end of the liquid inlet pipe (3), and a valve (11) is provided on the liquid outlet pipe (4).

6. The filtering device for offset printing fountain solution according to claim 1, characterized in that: Two symmetrically distributed mounting blocks (12) are arranged on the outside of the filter tank (1) and the tank cover (2), and the two corresponding mounting blocks (12) are connected via locking bolts (13).

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