Special filter pressing device for offset printing ink processing raw materials

Abstract

The invention is applicable to the technical field of filter pressing devices, and provides a special filter pressing device for offset printing ink processing raw materials, which comprises a feeding cylinder, a feeding pipe is fixedly mounted on one side wall of the feeding cylinder, a discharge port is integrally formed in the bottom wall of the feeding cylinder, a filter screen cylinder is detachably and fixedly mounted in the discharge port, a filter screen assembly is arranged in the filter screen cylinder, and a filter screen is arranged in the filter screen assembly. A plurality of layers of filter screen assemblies are arranged, each layer of filter screen assembly is movably connected with a cleaning brush plate, a filter pressing mechanism is further arranged in the feeding cylinder, a driving rod is fixedly mounted at the bottom of the filter pressing mechanism, and the driving rod is movably connected with the plurality of cleaning brush plates. Therefore, impurities on the filter screen assembly are scraped and swept, and the problem that follow-up ink cannot circulate due to the fact that the impurities block the filter holes is avoided.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of filter pressing devices, and particularly relates to a filter pressing device special for processing of offset ink raw materials. BACKGROUND

[0002] Offset ink is an important material for printing of packaging materials, and it displays patterns and characters on a printing material through printing. Offset ink includes main components and auxiliary components, which are uniformly mixed and repeatedly rolled into a viscous colloidal fluid. With the steady development of the offset printing market in China, offset ink has also developed rapidly. In the production process of offset ink, a filter pressing device is needed to remove impurities in the processing raw materials.

[0003] The Chinese utility model patent with the publication number CN206793164U discloses a filter pressing device special for processing of offset ink raw materials, which comprises a base, a filter pressing cylinder and a sealing end cover. The bottom of the base is provided with universal wheels. The filter pressing cylinder is internally provided with a high-temperature-resistant filter bag. The filter bag is loaded with uniformly distributed activated carbon particles. The inner wall of the sealing end cover is provided with a ceramic heating lamp. One side of the filter pressing cylinder is provided with a discharge pipe. The other side of the filter pressing cylinder is provided with an inert gas tank and a gas pump. The filter pressing device has a scientific and reasonable structure, is safe and convenient to use, and can form a negative pressure environment in the filter pressing cylinder by blowing inert gas into the filter pressing cylinder through the gas pump, so that the offset ink raw materials can be filtered to remove impurities under the pressure of the high-temperature-resistant filter bag. The filter pressing device has good filter pressing effect, is simple and convenient to operate, saves time and effort, and can heat the offset ink raw materials to maintain or improve the temperature of the offset ink raw materials, prevent the offset ink raw materials from solidifying, and improve the filtration speed of the offset ink raw materials.

[0004] However, the above device has the following technical problems in actual use:

[0005] Firstly, in the above device, the offset ink is introduced into the filter bag, the internal pressure of the filter bag is increased to filter the offset ink, and the offset ink without impurities is discharged along the filter bag. However, in the filter pressing process, the impurities contained in the offset ink may adhere to the inner wall of the filter bag, so that the subsequent offset ink cannot flow smoothly. In addition, the above device lacks a cleaning device for the impurities, so that the subsequent qualified offset ink cannot be discharged, and the cost is wasted.

[0006] Secondly, in the above device, the heating lamp is arranged on the inner top wall of the sealing end cover. Although the heating lamp can heat the inside of the filter pressing cylinder, the heat cannot be quickly transferred to the inside of the filter bag due to the certain spacing between the sealing end cover and the filter bag, so that the offset ink in the filter bag cannot be quickly heated, and the offset ink may still solidify, which affects the subsequent flow. SUMMARY

[0007] The application provides a special pressure filtration device for offset printing ink processing raw materials, aiming at solving the problem of lacking of scraping and cleaning device for ink impurities in the filter bag of the device mentioned in the background art, so that the impurities are easily adhered to the inner wall of the filter bag, thereby affecting the discharge of subsequent qualified ink, and the heating lamp and the filter bag in the device have a certain spacing, so that the heat cannot be quickly transferred to the inside of the filter bag, thereby the ink in the inside of the filter bag cannot be quickly heated.

[0008] The application is implemented as follows: a special pressure filtration device for offset printing ink processing raw materials, comprising: a feeding cylinder, a feeding pipe is fixedly installed on one side wall of the feeding cylinder, the feeding pipe is communicated with external ink conveying equipment, a feeding valve is fixedly installed on the feeding pipe, a discharge port is integrally formed on the bottom wall of the feeding cylinder, a filter screen cylinder is detachably fixedly installed in the discharge port, a discharge pipe is fixedly installed on the filter screen cylinder, and a discharge valve is fixedly installed on the discharge pipe, wherein, a filter screen assembly is arranged in the inside of the filter screen cylinder, the filter screen assembly is provided with multiple layers, a cleaning brush plate is movably connected to each layer of the filter screen assembly, a pressure filtration mechanism is further arranged in the inside of the feeding cylinder, a driving rod is fixedly installed at the bottom of the pressure filtration mechanism, the driving rod is movably connected with multiple cleaning brush plates, the multiple cleaning brush plates are controlled to rotate horizontally by the driving rod, a gas supplement assembly is arranged on the side wall of the feeding cylinder and is communicated with external nitrogen conveying equipment to supplement nitrogen into the feeding cylinder; in this scheme, the ink is guided into the feeding cylinder through the feeding pipe, and then flows to the filter screen cylinder through the discharge port, at this time, the pressure in the inside of the filter screen cylinder is increased by the downward movement of the pressure filtration mechanism, the qualified ink layer by layer falls and is finally discharged through the discharge pipe, the impurities are intercepted on each layer of the filter screen assembly, and the driving rod drives each layer of the cleaning brush plate to rotate in the process of downward movement of the pressure filtration assembly, so that the impurities on the filter screen assembly are scraped, thereby avoiding the problem that the filter holes are blocked by the impurities and the subsequent ink cannot flow.

[0009] In addition, the electric heating wire is arranged on each scraper in the device, when the electric heating wire works, the heat generated by the electric heating wire is directly transferred to the ink, so that the heat preservation or heating operation of the ink can be quickly performed, the heating process is rapid and does not consume too much time, and the problem of ink condensation is effectively avoided.

[0010] Preferably, each layer of the filter screen assembly comprises: an annular part fixedly installed on the inner wall of the filter screen cylinder, an annular block is arranged in the middle of the annular part, a plurality of connecting blocks are fixedly connected between the outer peripheral wall of the annular block and the inner peripheral wall of the annular part, the connecting blocks are equiangularly distributed, and a filter screen mesh is arranged between every two adjacent connecting blocks; in this scheme, a through hole concentric with the center part of the rotating ring is formed in the center of the annular block, the driving rod can penetrate through the through hole, and the annular block can also support the rotating ring above to ensure the stability during horizontal rotation of the rotating ring.

[0011] Preferably, the mesh aperture of the upper layer of the plurality of screen meshes is larger than the mesh aperture of the lower layer of the plurality of screen meshes; in this way, the ink is filtered layer by layer, which increases the filtering quality and reduces the burden of the single layer of screen meshes, thereby avoiding the problem of poor ink flow caused by excessive impurities.

[0012] Preferably, the cleaning brush plate comprises a rotating ring arranged above the annular block, a plurality of scrapers are fixedly installed on the outer wall of the rotating ring at equal angles, and the bottom wall of the scraper abuts against the screen mesh. The annular block is further integrally formed with an annular limiting block on the top wall, and the bottom wall of the rotating ring is provided with an annular limiting groove corresponding to the annular limiting block, and the annular limiting block slides in the annular limiting groove. In this scheme, the rotating ring is rotatably connected above the annular block through the mutual sliding of the annular limiting block and the annular limiting groove. When the driving rod controls the rotation of the rotating ring, the rotating ring drives the plurality of scrapers on the outer wall thereof to rotate horizontally, and the abutting contact between the bottom wall of the scraper and the top of the screen mesh scrapes off the impurities trapped on the screen mesh, thereby avoiding the influence of the filter hole blockage on the subsequent flow of the ink.

[0013] Preferably, an electric heating wire is fixedly installed on the outer wall of each scraper along the length thereof; in this scheme, the electric heating wire arranged on the outer side of each scraper can directly and quickly transfer heat to the ink, thereby avoiding the problem of condensation of the ink and ensuring that the filtered ink can quickly flow through the screen mesh.

[0014] Preferably, the pressure filtration mechanism further comprises an electric push rod fixedly installed on the top wall of the feeding cylinder, a piston plate is fixedly installed on the output end of the electric push rod extending into the inner cavity of the feeding cylinder, and the side wall of the piston plate abuts against the inner wall of the feeding cylinder. The driving rod is vertically fixedly connected to the bottom wall of the piston plate, and a spiral groove is formed on the outer wall of the driving rod along the length thereof. Each rotating ring is provided with a through hole through which the driving rod penetrates, and a protrusion is fixedly connected to the inner wall of the through hole and can be inserted into the spiral groove. In this scheme, when the output end of the electric push rod is extended, the piston plate is pushed downward. If the feeding valve and the discharging valve are in the closed state at this time, the space below the piston plate is squeezed, the air pressure is increased, the increased air pressure filters the ink, the impurities in the ink are separated, and at the same time, the driving rod at the bottom of the piston plate penetrates into the through hole, the protrusion enters the spiral groove, and as the driving rod continues to move downward, the protrusion is guided by the spiral groove to control the rotation of the rotating ring, thereby achieving the scraping of the impurities on the screen mesh.

[0015] Preferably, the air supplementing assembly comprises: a gas tank fixedly installed on the outer wall of the feeding cylinder, a gas pump assembly arranged in the gas tank, an exhaust pipe communicated with the inner cavity of the feeding cylinder arranged on the gas outlet end of the gas tank, and a control valve fixedly installed on the exhaust pipe; in this scheme, when the gas pump works, nitrogen in the gas tank is filled into the exhaust pipe, the control valve is opened, and nitrogen enters the inside of the feeding cylinder (below the piston plate), so that the air pressure in the inside of the filter screen cylinder is increased, and the subsequent pressure filtration work can be conveniently and stably performed.

[0016] Preferably, an inner thread is arranged on the inner wall of the discharge port, and an outer thread matched with the inner thread is arranged on the outer wall of the top end of the filter screen cylinder; in this scheme, the filter screen cylinder can be disassembled after work through the screwing cooperation of the inner thread and the outer thread, which facilitates manual cleaning of the inside of the filter screen cylinder and also facilitates manual unified treatment of impurities.

[0017] Compared with the prior art, the beneficial effects of the pressure filtration device for processing of the special material of offset printing ink are:

[0018] 1. The device guides the printing ink into the feeding cylinder through the feeding pipe, and then the printing ink flows to the filter screen cylinder through the discharge port; at this time, the pressure filtration mechanism is lowered to increase the air pressure in the inside of the filter screen cylinder, qualified printing ink layers fall one by one and are finally discharged through the discharge pipe, and impurities are intercepted on each layer of filter screen assembly; meanwhile, the driving rod drives each layer of cleaning brush plate to rotate in the process of lowering the pressure filtration assembly, so as to scrape and sweep the impurities on the filter screen assembly, to avoid the problem that the impurities block the filter holes and cause the subsequent printing ink to be unable to flow.

[0019] 2. In the device, the electric heating wire is arranged on each scraper, when the electric heating wire works, the heat generated by the electric heating wire is directly transmitted to the printing ink, so that the heat preservation or heating operation of the printing ink can be quickly performed, the heating process is rapid and does not consume too much time, and the problem of printing ink condensation is effectively avoided. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a front view of the invention;

[0021] Figure 2 is a sectional view of the feeding cylinder in the invention;

[0022] Figure 3 is a schematic view of the filter screen cylinder in the invention;

[0023] Figure 4 is a schematic view of the filter screen assembly and the cleaning brush plate thereof in the invention;

[0024] IN THE DRAWINGS:

[0025] 1, feed cylinder; 11, feed pipe; 12, feed valve; 13, discharge port; 131, internal thread;

[0026] 2, filter screen cylinder; 21, discharge pipe; 22, discharge valve; 23, external thread;

[0027] 3, filter screen assembly; 31, annular part; 32, annular block; 33, connecting block; 34, filter screen mesh;

[0028] 4, cleaning brush plate; 41, rotating ring; 42, scraper; 43, annular limiting block; 44, annular limiting groove; 45, electric heating wire;

[0029] 5, filter pressing mechanism; 51, driving rod; 511, helical groove; 52, electric push rod; 53, piston plate; 54, protrusion;

[0030] 6, air supplement assembly; 61, air tank; 62, exhaust pipe; 63, control valve. DETAILED DESCRIPTION

[0031] The technical solutions of the present application will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application.

[0032] The components of the embodiments of the present application generally described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application.

[0033] Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present application.

[0034] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] Please refer to Figures 1-4 The present application provides a technical scheme: a special filter press device for offset printing ink processing raw materials, comprising: a feeding cylinder 1, a feeding pipe 11 is fixedly installed on one side wall of the feeding cylinder 1, the feeding pipe 11 is communicated with external ink conveying equipment, and a feeding valve 12 is fixedly installed on the feeding pipe 11, a discharge port 13 is integrally formed on the bottom wall of the feeding cylinder 1, a filter screen cylinder 2 is detachably fixedly installed in the discharge port 13, a discharge pipe 21 is fixedly installed on the filter screen cylinder 2, and a discharge valve 22 is fixedly installed on the discharge pipe 21, wherein a filter screen assembly 3 is arranged in the filter screen cylinder 2, the filter screen assembly 3 is provided with multiple layers, and a cleaning brush plate 4 is movably connected to each layer of the filter screen assembly 3, a filter press mechanism 5 is further arranged in the feeding cylinder 1, a driving rod 51 is fixedly installed at the bottom of the filter press mechanism 5, the driving rod 51 is movably connected with the multiple cleaning brush plates 4, the multiple cleaning brush plates 4 are controlled to rotate horizontally through the driving rod 51, and a gas supplement assembly 6 is arranged on the side wall of the feeding cylinder 1 and is communicated with external nitrogen conveying equipment to supplement nitrogen into the feeding cylinder 1.

[0037] Specifically, the feeding valve 12 and the discharge valve 22 in the device can be one-way valve bodies, the discharge end of the feeding valve 12 is located on the side close to the feeding cylinder 1, which aims to prevent the problem of material backflow caused by the increase of gas pressure in the feeding cylinder 1, and the discharge end of the discharge valve 22 is located on the side away from the feeding cylinder 1, which aims to prevent the problem of material backflow caused by the increase of gas pressure in the feeding cylinder 1.

[0038] Further, each layer of the filter screen assembly 3 comprises: an annular part 31 fixedly installed on the inner wall of the filter screen cylinder 2, an annular block 32 is arranged in the middle of the annular part 31, and the outer peripheral wall of the annular block 32 and the inner peripheral wall of the annular part 31 are fixedly connected through multiple connecting blocks 33, the multiple connecting blocks 33 are distributed at equal angles, and a filter screen net 34 is arranged between every two adjacent connecting blocks 33.

[0039] Specifically, the filter screen cylinder 2 can also be a split structure, which is composed of a plurality of annular sleeves that are threadedly connected to each other, and each annular sleeve is internally provided with a set of filter screen assemblies 3. An inner matching thread is arranged on the inner peripheral wall of the bottom end of the upper annular sleeve between the two adjacent annular sleeves, and the outer peripheral wall of the top end of the lower annular sleeve can be inserted into the bottom end of the upper annular sleeve, and the outer peripheral wall is provided with an outer connecting thread that is threadedly connected with the inner matching thread.

[0040] Furthermore, each filter screen mesh 34 can be inserted between the two adjacent connecting blocks 33 by the cooperation of buckles and slots. A plurality of slots are formed in the lengthways of the side walls of the two adjacent connecting blocks 33, and buckles are arranged on the two ends of the filter screen mesh 34 corresponding to the plurality of slots. When assembling, the buckles are inserted into the slots to complete the assembly of the filter screen mesh 34. This way facilitates the subsequent manual disassembly and cleaning of the filter screen mesh 34, and the interior of the filter screen cylinder 2 can also be cleaned for subsequent secondary use.

[0041] Furthermore, in the two layers of filter screen assemblies 3 arranged adjacent to each other, the screen hole diameters of the plurality of filter screen meshes 34 in the upper layer are larger than those of the plurality of filter screen meshes 34 in the lower layer.

[0042] Furthermore, the cleaning brush plate 4 includes a rotating ring 41 arranged parallel to the annular block 32 above. A plurality of scrapers 42 are fixedly installed on the outer peripheral wall of the rotating ring 41 at equal angles. The bottom wall of the scraper 42 abuts against the filter screen mesh 34. The top wall of the annular block 32 is also integrally formed with a ring-shaped limiting block 43. A ring-shaped limiting groove 44 is formed in the bottom wall of the rotating ring 41 corresponding to the ring-shaped limiting block 43. The ring-shaped limiting block 43 slides in the ring-shaped limiting groove 44.

[0043] Specifically, the ring-shaped limiting groove 44 can be a T-shaped groove with a T-shaped cross section, and the cross section of the ring-shaped limiting block 43 can be a T-shaped block that is adapted.

[0044] Furthermore, an electric heating wire 45 is fixedly installed on the outer wall of each scraper 42 along the length thereof.

[0045] Specifically, the electric heating wire 45 is electrically connected to an external power supply device. The power supply device and the electric push rod 52 are both electrically connected to an external PLC controller. When the output end of the electric push rod 52 is actuated, the PLC controller drives the power supply device to supply power to the electric heating wire 45, thereby ensuring synchronous operation.

[0046] Further, the filter press mechanism 5 further comprises: an electric push rod 52 fixedly installed on the top wall of the feeding cylinder 1, an output end of the electric push rod 52 extending into the inner cavity of the feeding cylinder 1 is fixedly installed with a piston plate 53, a side wall of the piston plate 53 is in close contact with the inner wall of the feeding cylinder 1, wherein the driving rod 51 is vertically fixedly connected to the bottom wall of the piston plate 53, and a spiral groove 511 is formed in the outer wall of the driving rod 51 along the length direction of the driving rod 51, each rotating ring 41 is provided with a through hole for the driving rod 51 to pass through, and a protrusion 54 is fixedly connected to the inner wall of the through hole and is inserted into the spiral groove 511.

[0047] Further, the air supplement assembly 6 comprises: an air tank 61 fixedly installed on the outer wall of the feeding cylinder 1, the air tank 61 is provided with a gas pump assembly, the air tank 61 is provided with an exhaust pipe 62 communicated with the inner cavity of the feeding cylinder 1 at the gas outlet end of the air tank 61, and the exhaust pipe 62 is fixedly installed with a control valve 63.

[0048] Further, the inner wall of the discharge port 13 is provided with an internal thread 131, and the outer wall of the top end of the filter screen cylinder 2 is provided with an external thread 23 screwing with the internal thread 131.

[0049] The working principle and use process of the present application are as follows:

[0050] The feeding valve 12 is opened, the discharge valve 22 is closed, the ink enters into the inner part of the feeding cylinder 1 through the feeding pipe 11, and then enters into the filter screen cylinder 2;

[0051] At this time, the feeding valve 12 is closed, the air tank 61 fills the nitrogen into the feeding cylinder 1 through the exhaust pipe 62, and the output end of the electric push rod 52 pushes the piston plate 53 to move downward, when the piston plate 53 moves downward, the air pressure in the inner part of the filter screen cylinder 2 increases, so that the impurities in the ink are separated, the qualified ink is screened layer by layer and then falls into the bottom of the filter screen cylinder 2, when the piston plate 53 moves downward, the driving rod 51 is inserted into the middle through hole of each rotating ring 41, the protrusion 54 and the spiral groove 511 are in contact and drive the rotating ring 41 to rotate, the rotating ring 41 drives the plurality of scrapers 42 outside the rotating ring 41 to rotate, the impurities remaining on the filter screen 34 are scraped, and the subsequent ink is ensured to flow normally;

[0052] The heat generated by the electric heating wire 45 after being connected to the power supply is directly transmitted to the ink to warm and keep the ink, so that the ink is prevented from condensing;

[0053] After the filter pressing is completed, the discharge valve 22 is opened to discharge the qualified ink.

[0054] The above only describes the preferred embodiments of the present application and is not used to limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A special filter-pressing device for offset ink processing raw materials, characterized in that: The utility model relates to a printing ink filtering device, including: The one side wall of feed cylinder (1) is fixedly installed with feed pipe (11), the feed pipe (11) is communicated with outside ink conveying equipment, and the feed pipe (11) is fixedly installed with feed valve (12); The bottom wall of feed cylinder (1) is integrally formed with discharge port (13), the discharge port (13) is detachably fixedly installed with filter screen cylinder (2), the filter screen cylinder (2) is fixedly installed with discharge pipe (21), and the discharge pipe (21) is fixedly installed with discharge valve (22); Wherein, the inside of filter screen cylinder (2) is provided with filter screen assembly (3), the filter screen assembly (3) is provided with multiple layers, and each layer of filter screen assembly (3) is movably connected with cleaning brush plate (4); The inside of feed cylinder (1) is also provided with filter pressing mechanism (5), the bottom is fixedly installed with driving rod (51), the driving rod (51) and multiple cleaning brush plate (4) are movably connected, multiple cleaning brush plate (4) is controlled horizontal rotation through driving rod (51); And, air supplementing assembly (6) is set up on the side wall of feed cylinder (1), and is communicated with outside nitrogen gas conveying equipment to supplement nitrogen gas to feed cylinder (1) inside.

2. The special filter-press device for processing of the offset printing ink materials according to claim 1, characterized in that: Each layer of filter screen assembly (3) includes: Annular part (31) is fixedly installed on the inner wall of filter screen cylinder (2), the middle part of annular part (31) is provided with annular block (32), and the outer peripheral wall of annular block (32) and the inner peripheral wall of annular part (31) are fixedly connected through multiple connecting blocks (33), multiple connecting blocks (33) are equiangularly distributed, and filter screen net (34) is arranged between every two adjacent connecting blocks (33).

3. The special filter-press device for processing of the offset printing ink materials according to claim 2, characterized in that: In every two adjacent layers of filter screen assembly (3), the mesh hole diameter of multiple filter screen net (34) in the upper layer is greater than the mesh hole diameter of multiple filter screen net (34) in the lower layer.

4. The special filter-press device for processing of the offset printing ink materials according to claim 2, characterized in that: The cleaning brush plate (4) includes: Rotary ring (41) is arranged above annular block (32) in parallel, multiple scrapers (42) are fixedly installed on the outer peripheral wall of rotary ring (41) equiangularly, and the bottom wall of scraper (42) abuts against filter screen net (34); Wherein, annular limiting block (43) is integrally connected on the top wall of annular block (32), and annular limiting groove (44) is formed in the bottom wall of rotary ring (41) corresponding to annular limiting block (43), and annular limiting block (43) slides in annular limiting groove (44).

5. The special filter-press device for processing of the offset printing ink materials according to claim 4, characterized by the fact that: Electric heating wire (45) is fixedly installed on the outer wall of every scraper (42) along the length thereof.

6. The special filter-press device for processing of the offset printing ink materials according to claim 4, characterized by the fact that: The filter pressing mechanism (5) further includes: Electric push rod (52) is fixedly installed on the top wall of feed cylinder (1), and the output end of electric push rod (52) extending to the inner cavity of feed cylinder (1) is fixedly installed with piston plate (53), and the side wall of piston plate (53) is attached to the inner wall of feed cylinder (1). The driving rod (51) is vertically fixed on the bottom wall of the piston plate (53), and a spiral groove (511) is formed in the outer wall of the driving rod (51) along the length direction of the driving rod (51); each rotating ring (41) is provided with a through hole for the driving rod (51) to penetrate, and a protrusion (54) is fixed on the inner wall of the through hole and is inserted into the spiral groove (511).

7. The special filter-press device for processing of the offset printing ink materials according to claim 1, characterized by the fact that: The air supplement assembly (6) comprises: An air tank (61) is fixedly installed on the outer wall of the feeding barrel (1), and an air pump assembly is arranged in the air tank (61); an exhaust pipe (62) is arranged on the air outlet end of the air tank (61) and is communicated with the inner cavity of the feeding barrel (1); and a control valve (63) is fixedly installed on the exhaust pipe (62).

8. The special filter-press device for processing of the offset printing ink materials according to claim 1, characterized by the fact that: An inner thread (131) is arranged on the inner wall of the discharge port (13), and an outer thread (23) is arranged on the outer wall of the top end of the filter screen barrel (2) and is screwed with the inner thread (131).

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