Filtering device for ink preparation and capable of improving uniformity of ink particles

Abstract

The utility model relates to the technical field of printing ink filtering devices, in particular to a printing ink preparation filtering device capable of improving the uniformity of printing ink particles, which comprises an outer cylinder and a filtering assembly, and the filtering assembly comprises a rotary drum capable of rotating in the outer cylinder and throwing printing ink into the outer cylinder. The rotary drum is arranged into a plurality of filtering areas from the feeding end to the discharging end of the rotary drum, the hole diameters of filtering holes of the filtering areas from the feeding end to the discharging end of the rotary drum are gradually increased, a spiral piece is arranged on the inner wall of the rotary drum in the length direction of the rotary drum, and when the rotary drum drives the spiral piece to rotate, printing ink can flow into the discharging end from the feeding end of the rotary drum. The rotary drum capable of rotating is arranged, printing ink is thrown out of the rotary drum through rotation of the rotary drum, and due to the fact that the cleaning assembly is arranged, the situation that the printing ink blocks the filter holes is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of ink filtering devices, in particular to a filtering device for ink preparation to improve the uniformity of ink particles. Background Technique

[0002] In the field of ink preparation, the uniformity of ink particles is one of the core factors affecting printing quality. Uneven distribution of ink particles will cause problems such as color difference, spots, and adhesion differences in printed products. Especially in high-end printing fields, such as packaging printing and electronic component printing, the requirements for the uniformity of ink particles are more stringent.

[0003] In the prior art, a single-stage filtering device usually uses a filter screen with a fixed aperture, which is difficult to meet the requirements of high-precision filtering and particle uniformity control at the same time. For example, using a filter screen with a small aperture can intercept more tiny particles, but it is easy to cause the filter screen to be blocked due to particle accumulation. While a filter screen with a large aperture can maintain a higher flow rate, it cannot effectively intercept small particles, resulting in a significant particle size difference in the ink. Content of the Utility Model

[0004] The purpose of the utility model is to provide a filtering device for ink preparation to improve the uniformity of ink particles. By setting a rotating drum, the ink is thrown out of the drum through the rotation of the drum, and a cleaning component is provided to reduce the blockage of the filter holes by the ink.

[0005] To solve the problems of the prior art, the utility model provides a filtering device for ink preparation to improve the uniformity of ink particles, including an outer cylinder and a filtering component. The filtering component includes a drum that can rotate in the outer cylinder and throws the ink into the outer cylinder. The drum is provided with several filtering areas along its feed end to the discharge end, and the aperture of the filter holes in the filtering areas of the drum gradually increases along its feed end to the discharge end. A spiral blade is arranged along the length direction of the inner wall of the drum, and when the drum drives the spiral blade to rotate, the ink can flow from the feed end of the drum to the discharge end.

[0006] Preferably, a baffle is arranged inside the outer cylinder to divide its interior into several cavities, each cavity is independent, and a discharge port for the ink to fall is also arranged at the bottom of the outer cylinder corresponding to each cavity.

[0007] Preferably, the feed end of the outer cylinder is connected with a feed port, the bottom end of the feed port is connected with a feed pipe that can lead the ink in the feed port into the drum. The filtering component also includes a first support shaft arranged at the center position of the feed end of the drum, and the feed pipe passes through the first support shaft and extends into the drum. The first support shaft is a hollow shaft.

[0008] Preferably, the filtering assembly further includes a rotary driving member disposed at one end of the outer cylinder away from the feed port on the outer cylinder, and the filtering assembly further includes a second support shaft disposed at the center position of the discharge end of the drum, and the output end of the rotary driving member is connected to the second support shaft.

[0009] Preferably, the filtering assembly further includes two support members respectively sleeved on the first support shaft and the second support shaft for supporting the drum, and the support members are fixed in the outer cylinder.

[0010] Preferably, the outer cylinder is further provided with a cleaning assembly capable of removing impurities that block the filter holes of the drum, and the cleaning assembly is disposed at the upper part of the outer cylinder.

[0011] Preferably, the cleaning assembly includes a plurality of air outlet plates respectively corresponding to the filtering areas in the drum, the air outlet plates are disposed directly above the drum, an air inlet pipe is connected to each air outlet plate, and a plurality of air outlet holes for spraying gas onto the drum are distributed on each air outlet plate.

[0012] Preferably, the cross-section of the air outlet plate is designed to be arc-shaped.

[0013] The beneficial effects of the present utility model compared with the prior art are as follows:

[0014] 1. In this application, a high-efficiency multi-stage dynamic filtering system is constructed by arranging a rotatable drum in the outer cylinder. When the ink enters the drum, it first flows through the initial filtering area with smaller filter hole diameters. As the drum rotates, under the action of centrifugal force, the ink is thrown out. The spiral fins provided on the inner wall of the drum play a key guiding role, causing the ink to gradually flow along a spiral path to the subsequent filtering areas. This design enables the ink to sequentially pass through filtering areas with different pore diameters during the flowing process, realizing the classification filtering of ink particles with different particle sizes. Smaller particles are filtered in the initial stage, and larger particles are filtered in the subsequent stage. Through this progressive filtering method, unevenly sized particles in the ink are effectively removed, significantly improving the uniformity of the ink;

[0015] 2. To solve the common problem of filter hole blockage in traditional filtering equipment, a cleaning assembly is designed in this application. The cleaning assembly consists of air outlet plates corresponding to each filtering area and air inlet pipes. The air inlet pipes are connected to an external air source (such as an air pump). When the filter holes on the drum are blocked, the air source works, and high-pressure gas is introduced into the air outlet plates. The high-pressure gas forms a high-speed air flow beam through the air outlet holes on the air outlet plates and directly acts on the surface of the filter holes of the drum. Through the impact force and shear force of the air flow, the ink particles blocked in the filter holes are instantly peeled off. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the first three-dimensional structural schematic diagram of the filtering device for ink preparation to improve the uniformity of ink particles of the present utility model;

[0017] Figure 2 It is the second three-dimensional structure diagram of the filtering device for ink preparation to improve the uniformity of ink particles of the present utility model;

[0018] Figure 3 It is the exploded structure diagram of the filtering device for ink preparation to improve the uniformity of ink particles of the present utility model;

[0019] Figure 4 It is the semi-sectional structure diagram of the outer cylinder of the filtering device for ink preparation to improve the uniformity of ink particles of the present utility model;

[0020] Figure 5 It is the semi-sectional structure diagram of the rotating drum of the filtering device for ink preparation to improve the uniformity of ink particles of the present utility model;

[0021] Figure 6 It is the three-dimensional structure diagram of the cleaning component of the filtering device for ink preparation to improve the uniformity of ink particles of the present utility model.

[0022] The reference numerals in the figure are: 1. outer cylinder; 11. feed inlet; 111. feed pipe; 12. discharge outlet; 13. baffle; 2. filtering component; 21. rotating drum; 211. spiral blade; 212. first support shaft; 213. second support shaft; 22. support member; 23. rotation driving member; 3. cleaning component; 31. air outlet plate; 311. air outlet hole; 32. air inlet pipe. Specific embodiments

[0023] In order to further understand the features, technical means, specific purposes and functions achieved by the present utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Refer to Figures 1-6 As shown, the present utility model provides a filtering device for ink preparation to improve the uniformity of ink particles, which includes an outer cylinder 1 and a filtering component 2. The filtering component 2 includes a rotating drum 21 that can rotate in the outer cylinder 1 and fling the ink into the outer cylinder 1. The rotating drum 21 is provided with a plurality of filtering areas along its feed end to discharge end, and the aperture of the filter holes in the filtering areas of the rotating drum 21 gradually increases along its feed end to discharge end. A spiral blade 211 is arranged on the inner wall of the rotating drum 21 along its length direction. When the rotating drum 21 drives the spiral blade 211 to rotate, the ink can flow from the feed end of the rotating drum 21 to the discharge end.

[0025] After the ink enters the filtering device, it first enters the drum 21 of the filtering component 2. The drum 21 starts to rotate, and under the action of centrifugal force, the ink is thrown towards the outer wall of the drum 21. Since multiple filtering areas are arranged on the drum 21 from the feed end to the discharge end, and the pore diameters of the filter holes gradually increase, when the ink passes through these areas, smaller particles will first pass through the filter holes with smaller pore diameters and be thrown out of the drum 21 into the outer cylinder 1, while larger particles will continue to flow forward to reach the next filtering area with a slightly larger pore diameter, and so on, realizing multi-stage filtering of the ink, gradually separating particles of different sizes, thereby improving the uniformity of the ink particles. At the same time, the spiral fins 211 on the inner wall of the drum 21 rotate with the drum 21, pushing the ink to flow from the feed end to the discharge end, ensuring that the ink can fully contact each filtering area throughout the drum 21, making the filtering process more efficient and uniform. Finally, the ink after multi-stage filtering is thrown into the outer cylinder 1 for collection, completing the entire filtering process.

[0026] Inside the outer cylinder 1, there are baffles 13 for dividing its interior into several cavities, each cavity being independent, and at the bottom of the outer cylinder 1, there are also discharge ports 12 corresponding to each cavity for the ink to fall.

[0027] The interior of the outer cylinder 1 is divided into several independent cavities. The main purpose of this design is to cooperate with the ink thrown out from different filtering areas of the drum 21, so that inks with different particle sizes can enter the corresponding cavities respectively, avoiding the mixing of inks with different particle sizes, further ensuring the uniformity of the ink particles after multi-stage filtering, and facilitating the subsequent separate treatment or collection of inks with different particle sizes.

[0028] The feed end of the outer cylinder 1 is connected with a feed port 11, and at the bottom end of the feed port 11, there is a feed pipe 111 capable of leading the ink in the feed port 11 into the drum 21. The filtering component 2 further includes a first support shaft 212 arranged at the central position of the feed end of the drum 21, and the feed pipe 111 passes through the first support shaft 212 and extends into the drum 21, and the first support shaft 212 is a hollow shaft.

[0029] The ink to be filtered enters the device from the feed port 11 and is conveyed through the feed pipe 111 connected to the bottom end of the feed port 11. Since the feed pipe 111 passes through the first support shaft 212 arranged at the central position of the feed end of the drum 21 and extends into the drum 21, the ink can be smoothly led into the interior of the drum 21.

[0030] The filtering component 2 further includes a rotary drive member 23 disposed at one end of the outer cylinder 1 away from the feed port 11 on the outer cylinder 1. The filtering component 2 further includes a second support shaft 213 disposed at the center position of the discharge end of the drum 21. The output end of the rotary drive member 23 is connected to the second support shaft 213. The filtering component 2 further includes two support members 22 respectively sleeved on the first support shaft 212 and the second support shaft 213 for supporting the drum 21, and the support members 22 are fixed in the outer cylinder 1.

[0031] The rotary drive member 23 starts to work, and its output end drives the connected second support shaft 213 to rotate. Since the first support shaft 212 and the second support shaft 213 respectively support the drum 21 from the feed end and the discharge end of the drum 21, and both are further stabilized in the outer cylinder 1 through the support members 22, the drum 21 can rotate stably as the second support shaft 213 rotates.

[0032] The outer cylinder 1 is further provided with a cleaning component 3 capable of removing impurities that block the filter holes of the drum 21. The cleaning component 3 is disposed on the upper part of the outer cylinder 1. The cleaning component 3 includes a plurality of air outlet plates 31 respectively corresponding to the filtering areas in the drum 21. The air outlet plates 31 are disposed directly above the drum 21. An air inlet pipe 32 is connected to each air outlet plate 31, and a plurality of air outlet holes 311 for spraying gas onto the drum 21 are distributed on each air outlet plate 31. The cross-section of the air outlet plate 31 is designed to be arc-shaped to be adapted to the shape of the drum 21.

[0033] During the filtering process, the filter holes of the drum 21 may be blocked by impurities in the ink. At this time, the cleaning component 3 starts to work. External gas enters each air outlet plate 31 through the air inlet pipe 32 and then sprays out from the air outlet holes 311 distributed on the air outlet plate 31. Since the cross-section of the air outlet plate 31 is designed to be arc-shaped and respectively corresponds to the filtering areas of the drum 21, the gas can uniformly impact the filter holes in the corresponding filtering areas of the drum 21, flush out the impurities blocking the filter holes, and make the filter holes unblocked.

[0034] The above embodiments only represent one or several implementation manners of the present utility model, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the appended claims.

Claims

1. An ink filtering device for ink preparation to improve the uniformity of ink particles, characterized in that: It includes an outer cylinder (1) and a filtering component (2). The filtering component (2) includes a drum (21) that can rotate in the outer cylinder (1) and fling ink into the outer cylinder (1). The drum (21) is provided with a plurality of filtering areas along its feed end to discharge end, and the aperture of the filter holes in the filtering areas of the drum (21) gradually increases along its feed end to discharge end. A spiral blade (211) is arranged on the inner wall of the drum (21) along its length direction. When the drum (21) drives the spiral blade (211) to rotate, the ink can flow from the feed end of the drum (21) to the discharge end.

2. The ink preparation filtering device for improving the uniformity of ink particles according to claim 1, wherein: A baffle (13) for dividing its interior into a plurality of cavities is arranged inside the outer cylinder (1). Each cavity is independent of each other. An outlet (12) for allowing the ink to fall corresponding to each cavity is further arranged at the bottom of the outer cylinder (1).

3. The ink preparation filtering device for improving the uniformity of ink particles according to claim 1, characterized in that: The feed end of the outer cylinder (1) is connected with a feed port (11). The bottom end of the feed port (11) is connected with a feed pipe (111) that can lead the ink in the feed port (11) into the drum (21). The filtering component (2) further includes a first support shaft (212) arranged at the central position of the feed end of the drum (21). The feed pipe (111) passes through the first support shaft (212) and extends into the drum (21). The first support shaft (212) is a hollow shaft.

4. The ink preparation filtering device for improving the uniformity of ink particles according to claim 3, characterized in that: The filtering component (2) further includes a rotary drive member (23) arranged at one end of the outer cylinder (1) far away from the feed port (11) on the outer cylinder (1). The filtering component (2) further includes a second support shaft (213) arranged at the central position of the discharge end of the drum (21). The output end of the rotary drive member (23) is connected with the second support shaft (213).

5. The ink preparation filtering device for improving the uniformity of ink particles according to claim 4, characterized in that: The filtering component (2) further includes two support members (22) respectively sleeved on the first support shaft (212) and the second support shaft (213) for supporting the drum (21). The support members (22) are fixed in the outer cylinder (1).

6. The ink preparation filtering device for improving the uniformity of ink particles according to claim 1, characterized in that: A cleaning component (3) capable of removing impurities that block the filter holes of the drum (21) is further arranged on the outer cylinder (1). The cleaning component (3) is arranged at the upper part of the outer cylinder (1).

7. The ink preparation filtering device for improving the uniformity of ink particles according to claim 6, characterized in that: The cleaning component (3) includes a plurality of air outlet plates (31) respectively corresponding to the filtering areas in the drum (21). The air outlet plates (31) are arranged directly above the drum (21). An air inlet pipe (32) is connected to each air outlet plate (31). A plurality of air outlet holes (311) for spraying gas onto the drum (21) are also distributed on each air outlet plate (31).

8. The ink preparation filtering device for improving the uniformity of ink particles according to claim 7, characterized in that: The cross-section of the air outlet plate (31) is designed to be arc-shaped.

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