Waste ink recycling device for green printing

Abstract

The utility model discloses a waste ink recycling device for green printing, which comprises a shell and a feed port arranged at the top of the shell, a crushing cavity, a fine grinding cavity and a stirring cavity are arranged in the shell in sequence, a rotating shaft is arranged on a vertical center line in the shell, crushing teeth are arranged on the rotating shaft in the crushing cavity, and the stirring cavity is arranged in the crushing cavity. A plurality of lower grinders are evenly distributed on the circumference of the lower portion in the fine grinding cavity, grooves are formed in the lower grinders, upper grinders are arranged in the grooves in a matched mode, a discharging pipe is arranged in the middles of the upper grinders in a penetrating mode, a driving gear is arranged on the rotating shaft in the fine grinding cavity, and a driven gear meshed with the driving gear is arranged on the discharging pipe. An overflow pipe with the lower end communicated with the stirring cavity is arranged on the outer side of the lower mill, an overflow hole communicated with the overflow pipe is formed in the side wall of the upper part of the lower mill, a stirring rod is arranged on the rotating shaft in the stirring cavity, and a discharge pipe is arranged at the bottom of the stirring cavity. In conclusion, the printing ink recovery device has the advantages of high working efficiency, uniform concentration of recovered printing ink and high recovery rate.

Description

Technical Field

[0001] This utility model relates to the field of ink recycling technology, specifically to a green printing waste ink recycling device. Background Technology

[0002] Green printing refers to a printing method that uses environmentally friendly materials and processes, generates less pollution during the printing process, saves resources and energy, and ensures that printed materials are easily recycled, reusable, biodegradable, and have minimal impact on the ecological environment. Green printing requires harmony with the environment, including the use of environmentally friendly printing materials, clean printing production processes, the safety of printed materials for users, and the recycling and reusability of printed materials. Ink is a homogeneous mixture composed of colorants, binders, fillers, and additives. It is a colored, fluid, paste-like adhesive that can be printed and dried on the substrate. The ink source is mainly stored in the ink bath. The ink surface is easily exposed to air, which can lead to oxidation, skinning, and hardening, affecting the printing effect and even rendering the ink unusable. It is generally disposed of as waste, resulting in resource waste and environmental pollution. To prevent ink waste, waste ink recycling devices are used for recycling and reuse. However, existing ink recycling devices suffer from low efficiency, uneven ink concentration after filtration, and low recovery rates. Therefore, it is an objective need to develop a green printing waste ink recycling device that has high working efficiency, uniform ink concentration, and high recovery rate. Utility Model Content

[0003] The purpose of this invention is to provide a green printing waste ink recycling device with high working efficiency, uniform ink concentration, and high recovery rate.

[0004] The purpose of this utility model is achieved as follows: It includes a housing and a feed inlet located at the top of the housing. The interior of the housing is divided into a crushing chamber, a fine grinding chamber, and a stirring chamber from top to bottom by a partition. A rotating shaft is installed on the vertical center line inside the housing. The upper end of the rotating shaft is connected to a drive mechanism, and the lower end is rotatably connected to the bottom of the housing. Crushing teeth are installed on the rotating shaft in the crushing chamber. Multiple lower mills are evenly distributed around the lower circumference of the fine grinding chamber. Each lower mill has a groove, and an upper mill is fitted into the groove. A feed pipe is inserted through the middle of each upper mill, and the upper end of the feed pipe communicates with the crushing chamber. A drive gear is installed on the rotating shaft in the fine grinding chamber, and a driven gear meshing with the drive gear is installed on the feed pipe. An overflow pipe with its lower end communicating with the stirring chamber is installed on the outer side of each lower mill. An overflow hole communicating with the overflow pipe is machined on the upper side wall of the lower mill. A stirring rod is installed on the rotating shaft in the stirring chamber, and a discharge pipe is installed at the bottom of the stirring chamber.

[0005] Furthermore, the crushing teeth inside the crushing chamber are arranged in multiple layers at intervals.

[0006] Furthermore, a separation plate is provided in the fine grinding chamber between the driven gear and the upper grinding mill.

[0007] Furthermore, the upper part is hemispherical.

[0008] Furthermore, a drain is provided at the center of the bottom of the lower mill, and a gate valve is provided on the drain. The lower end of the drain is connected to the mixing chamber.

[0009] Furthermore, heating elements are installed at the bottom of the crushing chamber and inside the lower mill.

[0010] Furthermore, the upper surface of the lower grinding wheel and the lower surface of the upper grinding wheel are fitted with protruding teeth, the cross-section of which is triangular.

[0011] Furthermore, the feed pipe has a segmented structure, with the segments connected by mating flanges, and an adjusting ring plate is installed between the mating flanges.

[0012] Furthermore, the bottom of the crushing chamber and the bottom of the mixing chamber are connected by a circulation pipe, and a circulation pump is installed on the circulation pipe.

[0013] When this invention is in operation, waste ink for green printing is fed into the crushing chamber through the feed inlet. At this time, the drive mechanism is activated, first driving the rotating shaft to rotate. When the rotating shaft rotates, it drives the crushing teeth, the drive gear, and the stirring rod to rotate synchronously. The drive gear drives the driven gear to rotate, the driven gear drives the feed pipe to rotate, and the feed pipe drives the upper mill to rotate. When the waste ink enters the crushing chamber, under the action of the crushing teeth, the ink that has condensed into lumps is broken up and stirred, breaking the ink into smaller particles. Then, it falls from the feed pipe between the upper and lower mills. During the rotation of the upper mill, the ink particles are ground and refined to meet the requirements for reuse. After grinding, the ink continuously moves upward, enters the overflow pipe through the overflow hole, and falls into the stirring chamber. The stirring rod is used to stir the ink, averaging the ink concentration, so that the recovered ink has a uniform concentration. Finally, it is discharged from the discharge pipe. In this invention, a crushing chamber, a fine grinding chamber, and a stirring chamber are sequentially arranged to crush, grind, and stir the waste ink. The entire process is automated, resulting in high efficiency. After a series of treatments, the ink is thoroughly ground and mixed, ensuring that clumps and peeling within the waste ink are crushed and dissolved, yielding reusable ink with a high recovery rate and uniform ink concentration. The treatment effect is good and meets the requirements for recycling. In summary, this invention has the advantages of high efficiency, uniform ink concentration, and high recovery rate. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the convex tooth 17 in this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the mating flange 18 in this utility model;

[0017] In the diagram: 1-shell, 2-crushing chamber, 3-fine grinding chamber, 4-stirring chamber, 5-rotating shaft, 6-crushing teeth, 7-lower mill, 8-upper mill, 9-feeding pipe, 10-driving gear, 11-driven gear, 12-overflow pipe, 13-stirring rod, 14-separation plate, 15-discharge pipe, 16-heating element, 17-convex tooth, 18-pairing flange, 19-adjusting ring plate, 20-circulation pipe. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings, but this description is not intended to limit the present invention in any way. Any changes or improvements made based on the present invention shall fall within the protection scope of the present invention.

[0019] like Figures 1-3 As shown, this utility model includes a housing 1 and a feed inlet located at the top of the housing 1. The interior of the housing 1 is divided into a crushing chamber 2, a fine grinding chamber 3, and a stirring chamber 4 from top to bottom by a partition. The crushing chamber 2 is used to crush blocky ink, the fine grinding chamber 3 is used to grind the ink, and the stirring chamber 4 is used to stir and mix the ground ink to achieve an average ink concentration. A rotating shaft 5 is arranged on the vertical center line inside the housing 1. The upper end of the rotating shaft 5 is connected to a drive mechanism, which is existing technology and can use a geared motor. The lower end is rotatably connected to the bottom of the housing 1. The rotating shaft 5 in the crushing chamber 2 is provided with crushing teeth 6, and multiple lower grinding teeth 7 are evenly distributed around the lower circumference of the fine grinding chamber 3. The lower mill 7 is provided with a groove, and the upper mill 8 is fitted inside the groove. A feed pipe 9 is provided through the middle of the upper mill 8. The upper end of the feed pipe 9 is connected to the crushing chamber 2. A drive gear 10 is provided on the rotating shaft 5 in the fine grinding chamber 3. A driven gear 11 that meshes with the drive gear 10 is provided on the feed pipe 9. An overflow pipe 12 with its lower end connected to the stirring chamber 4 is provided on the outer side of the lower mill 7. An overflow hole connected to the overflow pipe 12 is machined on the upper side wall of the lower mill 7. The ink after grinding overflows from the overflow hole into the overflow pipe 12 and falls into the stirring chamber 4 through the overflow pipe 12. A stirring rod 13 is provided on the rotating shaft 5 in the stirring chamber 4. A discharge pipe is provided at the bottom of the stirring chamber 4.

[0020] When this invention is in operation, waste ink for green printing is fed into the crushing chamber 2 through the feed inlet. At this time, the drive mechanism is started. The drive mechanism first drives the rotating shaft 5 to rotate. When the rotating shaft 5 rotates, it drives the crushing teeth 6, the drive gear 10 and the stirring rod 13 to rotate synchronously. The drive gear 10 drives the driven gear 11 to rotate. The driven gear 11 drives the feed pipe 9 to rotate. The feed pipe 9 drives the upper mill 8 to rotate. When the waste ink enters the crushing chamber 2, under the action of the crushing teeth 6, the ink that has condensed into lumps is broken up and stirred, and the ink is broken into smaller particles. Then, it falls from the feed pipe 9 between the upper mill 8 and the lower mill 7. During the rotation of the upper mill 8, the ink particles are ground and refined to meet the requirements of reuse. After grinding, the ink moves upward and enters the overflow pipe 12 through the overflow hole, and falls into the stirring chamber 4. The stirring rod 13 is used to stir the ink to average the ink concentration, so that the concentration of the recovered ink is uniform. Finally, it is discharged from the discharge pipe.

[0021] In this invention, a crushing chamber 2, a fine grinding chamber 3, and a stirring chamber 4 are sequentially arranged to crush, grind, and stir the waste ink. The entire process is automated and has high working efficiency. The ink after a series of treatments is fully ground and mixed, ensuring that the lumps and peeling in the waste ink are crushed and dissolved, resulting in ink that can be reused. The recovery rate is high, and the recovered ink has a uniform concentration, resulting in good treatment effect and meeting the requirements for recycling.

[0022] The crushing teeth 6 inside the crushing chamber 2 are arranged in multiple layers at intervals. The multi-layer structure of the crushing teeth 6 can improve the crushing efficiency of ink and break block ink into small particles more quickly.

[0023] A separation plate 14 is provided in the fine grinding chamber 3 between the driven gear 11 and the upper grinding chamber 8. The separation plate 14 separates the gear components and the grinding components, forming a relatively sealed gear transmission space and a relatively sealed ink grinding space. On the one hand, it can prevent ink from splashing onto the driving gear 10 and the driven gear 11, affecting the transmission efficiency of the gear components, ensuring gear transmission efficiency, and extending the service life of the gear components. On the other hand, due to the setting of the separation plate 14, the feed tube 9 has an additional fulcrum, which can prevent the feed tube 9 from skewing or shaking during rotation, improve the stability of the feed tube 9 during rotation, thereby improving the stability of the upper grinding chamber 8 during rotation, and ultimately improving the ink grinding efficiency.

[0024] Preferably, the upper grinding wheel 8 is hemispherical. The specific shape and structure of the upper grinding wheel 8 can be determined according to actual needs, and it can also be set as an inverted cone.

[0025] A drain pipe 15 is located at the center of the bottom of the lower mill 8. A gate valve is installed on the drain pipe 15, and the lower end of the drain pipe 15 is connected to the stirring chamber 4. After one cycle of ink crushing and grinding is completed, due to the structure, the ink located between the upper mill 8 and the lower mill 7 will cause a retention problem and cannot be completely discharged. On the one hand, this will cause ink waste, and on the other hand, the retained ink will deteriorate. To avoid this problem, the drain pipe 15 is set up. The gate valve on it is normally closed and only opens when all the ink is discharged to drain the retained ink.

[0026] Heating elements 16 are provided at the bottom of the crushing chamber 2 and inside the lower mill 7. The heating elements 16 dissipate heat to the outside, thereby heating the ink in the crushing chamber 2 and the fragmented ink between the upper mill 8 and the lower mill 7, so as to soften the ink and improve the crushing and grinding rate of the ink.

[0027] The upper surface of the lower mill 7 and the lower surface of the upper mill 8 are fitted with protruding teeth 17, the cross-section of which is triangular. Under the action of the protruding teeth 17, the ink is quickly and thoroughly ground and mixed, improving the ink grinding efficiency, and crushing and dissolving the clumps and peeling ink in the waste ink to obtain reusable ink.

[0028] The feed pipe 9 has a segmented structure, with the segments connected by mating flanges 18. The mating flanges 18 are an existing connection structure with mutually fitting sealing surfaces. In this device, adjusting ring plates 19 are installed between the mating flanges 18 to connect the segments of the feed pipe 9. After the device has been used for a period of time, if the surfaces of the upper grinding 8 and lower grinding 7 experience wear or become loose, the distance between them will increase, making it difficult to meet the ink grinding requirements. In this case, the mating flanges 18 can be loosened, and adjusting ring plates 19 of appropriate thickness can be replaced to adjust the distance between the upper grinding 8 and lower grinding 7 to meet the ink grinding requirements.

[0029] The bottom of the crushing chamber 2 and the bottom of the stirring chamber 4 are connected by a circulation pipe 20, on which a circulation pump is installed. During actual operation, if some of the processed ink remains granular after discharge and does not meet usage requirements, the circulation pump can be activated to pump the ink from the stirring chamber 4 back to the crushing chamber 2 for further crushing and grinding, ensuring the particle size meets the requirements for reuse.

Claims

1. A waste ink recycling device for green printing, comprising a shell (1) and a feeding port arranged at the top of the shell (1), characterized in that: The interior of the shell (1) is divided into a crushing chamber (2), a fine grinding chamber (3), and a stirring chamber (4) from top to bottom by a partition. A rotating shaft (5) is set on the vertical center line inside the shell (1). The upper end of the rotating shaft (5) is connected to a driving mechanism, and the lower end is rotatably connected to the bottom of the shell (1). Crushing teeth (6) are set on the rotating shaft (5) inside the crushing chamber (2). Multiple lower mills (7) are evenly distributed on the lower circumference of the fine grinding chamber (3). The lower mills (7) are provided with grooves, and upper mills (8) are fitted in the grooves. The middle of the upper mills (8) is provided with a lower mill. The upper end of the feed pipe (9) is connected to the crushing chamber (2). The rotating shaft (5) in the fine grinding chamber (3) is equipped with a drive gear (10). The feed pipe (9) is equipped with a driven gear (11) that meshes with the drive gear (10). The outer side of the lower mill (7) is equipped with an overflow pipe (12) whose lower end is connected to the stirring chamber (4). An overflow hole connected to the overflow pipe (12) is machined on the upper side wall of the lower mill (7). A stirring rod (13) is installed on the rotating shaft (5) in the stirring chamber (4). A discharge pipe is installed at the bottom of the stirring chamber (4).

2. The waste ink recycling device for green printing according to claim 1, characterized in that: The crushing teeth (6) in the crushing chamber (2) are arranged in multiple layers at intervals.

3. The waste ink recycling device for green printing according to claim 1, characterized in that: A separation plate (14) is provided in the fine grinding cavity (3) between the driven gear (11) and the upper grinding (8).

4. The waste ink recycling device for green printing according to claim 1, characterized in that: The upper mill (8) is hemispherical.

5. The waste ink recycling device for green printing according to claim 1, characterized in that: A drain pipe (15) is provided at the center of the bottom of the lower mill (7). A gate valve is provided on the drain pipe (15). The lower end of the drain pipe (15) is connected to the stirring chamber (4).

6. The waste ink recycling device for green printing according to claim 1, characterized in that: Heating elements (16) are provided at the bottom of the crushing chamber (2) and inside the lower mill (7).

7. The waste ink recycling device for green printing according to claim 1, characterized in that: The upper surface of the lower grinding wheel (7) and the lower surface of the upper grinding wheel (8) are provided with protruding teeth (17), and the cross section of the protruding teeth (17) is triangular.

8. The waste ink recycling device for green printing according to claim 1, characterized in that: The feed pipe (9) is a segmented structure, and the segments are connected by mating flanges (18). An adjusting ring plate (19) is provided between the mating flanges (18).

9. The waste ink recycling device for green printing according to claim 1, characterized in that: The bottom of the crushing chamber (2) and the bottom of the stirring chamber (4) are connected by a circulation pipe (20), and a circulation pump is installed on the circulation pipe (20).

Images