A water-based ink delamination prevention device for decorative paper

Abstract

The utility model belongs to water-based ink production technical field especially relates to a decorative paper water-based ink anti -delamination device, including grinding mechanism and stirring mechanism. Grinding mechanism includes chassis, sand mill barrel, installation cylinder and filter bowl, and the filter bowl one end is equipped with filter screen, and the installation cylinder one end has the connecting pipe extension to the filter bowl inside, and the outer wall of connecting pipe is equipped with the blowback tray, and the blowback tray is located in the installation cylinder, and a plurality of slit type air outlet openings are set up on the blowback tray, and the blowback pipe penetrates installation cylinder and filter bowl and is communicated with blowback tray, is used for on -line cleaning filter screen and realizes the impurity backflow and grinds again. The stirring mechanism constitutes the circulation loop with grinding mechanism through the circulating pump. The device through the collaborative configuration of blowback tray and slit type air outlet opening, combines the integrated processing of stirring circulation, realizes filter screen on -line cleaning and impurity recycling, solves the problem that filter screen is blocked and needs to stop and wash, improves the ink anti -delamination effect and production continuity.

Description

Technical Field

[0001] This utility model belongs to the field of water-based ink production technology, and in particular relates to a device for preventing delamination of water-based ink for decorative paper. Background Technology

[0002] In the decorative paper printing industry, water-based inks have become a core material to replace traditional solvent-based inks due to their advantages of being "environmentally friendly and solvent-free with high color saturation." Through the uniform mixing of pigment particles, water-based resin, additives, and water, a wear-resistant and weather-resistant printing layer is formed on the surface of decorative paper, making it widely used in furniture panels, flooring veneers, and other applications. The "stability" of water-based inks directly determines printing quality: if the ink separates, it will lead to uneven printing colors, blurred patterns, and even ink clogging in the printing press, causing batches of decorative paper to be scrapped.

[0003] To improve the uniformity of water-based inks, existing production equipment typically employs methods such as stirring and circulation to treat the ink. For example, some equipment is equipped with a stirring mechanism to reduce the settling speed of pigments, and then a circulation system continuously recirculates the ink to improve the overall dispersion and stability of the ink. In some devices, grinding and filtering components are also installed to further refine the particles and improve the ink structure.

[0004] Existing water-based ink anti-separation devices are prone to clogging of the filter screen during the grinding cycle by ink impurities. The filter screen needs to intercept impurities and insufficiently ground coarse particles in the ink, but these impurities and coarse particles tend to accumulate on the surface of the filter screen pores, forming a "filter cake layer," which increases the resistance to ink flow. At this time, it is necessary to stop the machine, disassemble the filter screen, clean it with a high-pressure water gun or solvent, and then reinstall and adjust it. Each clogging treatment takes a long time, which not only interrupts the anti-separation process but also affects ink quality and production efficiency. Utility Model Content

[0005] In view of the technical problems existing in the background art, the present invention provides a device for preventing delamination of water-based inks for decorative paper.

[0006] To achieve the above objectives, the technical solution provided by this utility model is as follows: A device for preventing delamination of water-based ink for decorative paper includes a grinding mechanism and a stirring mechanism. The grinding mechanism includes a base frame, a grinding cylinder is fixedly installed at the upper end of the base frame, a mounting cylinder is connected to one end of the grinding cylinder by a flange, a filter cylinder is fixedly installed inside the mounting cylinder, and a filter screen is provided at one end of the filter cylinder. One end of the mounting cylinder is connected to a connecting pipe, and the other end of the connecting pipe extends into the interior of the filter cylinder. A backflush disc is fitted on the outer wall of the connecting pipe, and several slit-type air jets are opened on the backflush disc. A backflush pipe is installed on one side of the mounting cylinder, and one end of the backflush pipe passes through the mounting cylinder and the filter cylinder in sequence and extends into the interior to communicate with the backflush disc. This is used for online cleaning of the filter screen and realizing the return of impurities for re-grinding.

[0007] Optionally, a second solenoid valve is fitted to the other end of the backflush pipe, an air compressor is fixedly connected to one side of the base frame, the output end of the air compressor is fixedly connected to the second solenoid valve, and a one-way valve is installed on one side of the top of the sand mill cylinder to maintain the pressure balance inside the sand mill cylinder during the backflush process.

[0008] Optionally, the stirring mechanism includes a support frame, the bottom end of which is fixedly connected to one side of the top of the base frame, and a stirring cylinder is fixedly connected to the top of the support frame. A first solenoid valve is fitted at the discharge port at the bottom of the stirring cylinder, and the bottom end of the first solenoid valve is connected to the input end of the grinding cylinder.

[0009] Optionally, a circulation pump is fixedly connected to one side of the support frame. The input end of the circulation pump is connected to the other end of the connecting pipe through a pipe, and the output end of the circulation pump is connected to the upper side of the mixing drum through a pipe.

[0010] Optionally, a cylinder cover is bolted to the top of the mixing drum, and a stirring rod is rotatably connected to the center of the bottom end of the cylinder cover. A second variable frequency motor is fixedly installed at the top of the cylinder cover, and the output end of the second variable frequency motor is connected to the stirring rod for transmission.

[0011] Optionally, a heating jacket is fitted on the outside of the mixing drum, and a temperature sensor is embedded in the inner wall of the mixing drum.

[0012] Optionally, a grinding roller is rotatably connected to one end of the inside of the grinding cylinder, and a fixed frame is installed at the other end of the inside of the grinding cylinder. The other end of the grinding roller is rotatably connected to the center of the fixed frame.

[0013] Optionally, a transmission box is fixedly connected to one end of the base frame. A pair of synchronous pulleys are rotatably connected inside the transmission box. The pair of synchronous pulleys are connected by a synchronous belt. The central shaft of one of the synchronous pulleys is fixedly connected to one end of the grinding roller. A first variable frequency motor is fixedly connected to the bottom side of the transmission box. The output end of the first variable frequency motor is connected to the other synchronous pulley.

[0014] Optionally, a tensioning pulley is rotatably connected inside the transmission box on the side near the synchronous belt, and the tensioning pulley abuts against the outer side of the synchronous belt.

[0015] This utility model has the following advantages and beneficial effects: This invention achieves online cleaning and impurity reuse of the filter screen by constructing a synergistic cleaning system of a backflush disc, slit-type air jets, and a backflush pipe within the grinding mechanism. First, the backflush disc is fitted onto the outer wall of the connecting pipe and located inside the filter cartridge, with several slit-type air jets on its surface. The backflush pipe passes through the mounting cylinder and the filter cartridge and connects to the backflush disc, forming a reverse airflow path from the inside out. High-pressure gas is ejected from the slit-type air jets in a fan shape, uniformly impacting the inner surface of the filter screen and instantly peeling off the filter cake layer. The blown-off impurities flow back to the grinding cylinder for further grinding until they meet the pore size requirements. This solves the problem of traditional solutions requiring machine shutdown for disassembly and cleaning of the filter screen, achieving online cleaning and extending the filter screen's service life. The overall structure achieves synergistic mixing, grinding, filtering, circulation, and online cleaning of water-based inks, improving ink anti-segregation effects and production continuity, and ensuring the printing quality of decorative paper. Attached Figure Description

[0016] Figure 1 The overall structure of the water-based ink anti-delamination device for decorative paper of this utility model Figure 1 ; Figure 2 The overall structure of the water-based ink anti-delamination device for decorative paper of this utility model Figure 2 ; Figure 3 This is a structural diagram of the grinding mechanism of this utility model; Figure 4 This is a partial view of the anti-delamination device for water-based inks on decorative paper according to this utility model. Figure 1 ; Figure 5 This is a partial view of the anti-delamination device for water-based inks on decorative paper according to this utility model. Figure 2 .

[0017] Reference numerals in the attached drawings: 1. Grinding mechanism; 101. Base frame; 102. First variable frequency motor; 103. Transmission box; 104. Grinding cylinder; 105. Air compressor; 106. Second solenoid valve; 107. Mounting cylinder; 108. Connecting pipe; 109. Filter cylinder; 110. Fixing frame; 111. Grinding roller; 112. Backflush disc; 113. Backflush pipe; 114. Synchronous pulley; 115. Tensioning pulley; 116. One-way valve; 117. Filter screen; 118. Slit-type air nozzle; 2. Stirring mechanism; 201. Support frame; 202. Circulating pump; 203. Stirring cylinder; 204. Cylinder cover; 205. Second variable frequency motor; 206. Temperature sensor; 207. Stirring rod; 208. Heating jacket; 209. First solenoid valve. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0020] Example like Figures 1-5 As shown, a device for preventing delamination of water-based ink for decorative paper includes a grinding mechanism 1 and a stirring mechanism 2. The grinding mechanism 1 includes a base frame 101, and a grinding cylinder 104 is fixedly installed on the upper end of the base frame 101. The grinding cylinder 104 has a cylindrical structure. The grinding cylinder 104 is welded and fixed to the support seat on the top of the base frame 101 via a flange. The grinding cylinder 104 is filled with zirconia ceramic grinding beads as grinding media, which are used to perform high-intensity impact, shearing and grinding on the pigment agglomerates in the water-based ink. A mounting cylinder 107 is connected to a flange at one end of the grinding cylinder 104. The mounting cylinder 107 is bolted to the discharge end of the grinding cylinder 104 via a flange. An oil-resistant rubber sealing ring is provided at the flange interface to ensure reliable sealing at the connection and prevent ink leakage. A filter cylinder 109 is fixedly installed inside the mounting cylinder 107. The filter cylinder 109 is a cylindrical filter assembly, and a filter screen 117 is provided at one end of the filter cylinder 109.

[0021] One end of the mounting cylinder 107 is connected to a connecting pipe 108, which is connected to the outlet pipe seat on the side wall of the mounting cylinder 107 via a threaded joint. One end of the connecting pipe 108 extends into the interior of the filter cartridge 109. A backflush disc 112 is fitted onto the outer wall of the connecting pipe 108, and the backflush disc 112 is located inside the mounting cylinder 107. The backflush disc 112 is a circular stainless steel disc with several slit-type air jets 118. Several radial slits are evenly distributed along the surface of the backflush disc 112, penetrating the thickness of the disc. Compared with the traditional round hole injection structure, the slit-type air jets 118 can form a flat fan-shaped airflow jet, with a larger coverage area and more uniform airflow distribution, avoiding the local high-speed impact and blind zone problems that are easy to occur with round hole injection.

[0022] A backflush pipe 113 is installed on one side of the mounting cylinder 107. One end of the backflush pipe 113 extends through the mounting cylinder 107 and the filter cylinder 109 to the inside, and the end is connected to the air inlet pipe seat at the center of the backflush disc 112. The connection method is threaded connection, and the interface is sealed with polytetrafluoroethylene sealing tape.

[0023] This backflush system forms a complete airflow path: "backflush pipe 113 → backflush disc 112 → slit-type jet nozzle 118 → inner surface of filter screen 117," used for online cleaning of the filter screen and achieving impurity recirculation and re-grinding. When the filter screen 117 experiences increased filtration resistance due to impurity blockage, high-pressure gas is input through the backflush pipe 113 into the internal cavity of the backflush disc 112, and then ejected at high speed from the slit-type jet nozzle 118, forming a fan-shaped jet that evenly impacts the inner surface of the filter screen 117. This removes the "filter cake layer" and impurity particles adhering to the filter screen. The blown-off impurities fall back into the grinding cylinder 104, mix with the grinding media, and continue grinding until the particle size is reduced to a level that can pass through the filter screen 117. This solves the problem of traditional solutions requiring shutdown for disassembly and cleaning of the filter screen, achieving true online cleaning and impurity recirculation and re-grinding.

[0024] Furthermore, a second solenoid valve 106 is fitted to the other end of the backflush pipe 113. An air compressor 105 is fixedly connected to one side of the base frame 101. The output end of the air compressor 105 is fixedly connected to the second solenoid valve 106. A one-way valve 116 is installed on one side of the top of the grinding cylinder 104. The second solenoid valve 106 controls the opening and closing of the backflush pipe 113 and precisely regulates the backflush timing. When backflushing is performed, the one-way valve 116 maintains the internal pressure balance of the grinding cylinder 104, ensuring the stability of the grinding and backflushing process. The one-way valve 116 allows gas to be discharged unidirectionally from the inside of the grinding cylinder 104. During the backflushing process, when the backflush airflow increases the internal pressure of the grinding cylinder, excess gas is discharged through the one-way valve, thereby maintaining pressure balance.

[0025] Furthermore, the stirring mechanism 2 includes a support frame 201. The bottom end of the support frame 201 is fixedly connected to one side of the top end of the base frame 101 by anchor bolts. The top end of the support frame 201 is fixedly connected to a stirring drum 203. The bottom outlet of the stirring drum 203 is fitted with a first solenoid valve 209. The bottom end of the first solenoid valve 209 is connected to the input end of the grinding drum 104 through a stainless steel bend. All pipe connections are sealed with flanges to ensure a firm connection and no leakage.

[0026] Furthermore, a circulation pump 202 is fixedly installed on one side of the support frame 201 for conveying the fine ink after grinding. The output end of the circulation pump 202 is connected to the upper side of the mixing drum 203 through a stainless steel pipe. The fine ink after grinding and filtering is drawn in by the circulation pump 202 and pumped back to the top of the mixing drum 203. In the mixing drum, it is mixed with the ink to be ground or newly added raw materials. After being evenly dispersed under the action of the stirring rod 207, it enters the sand mill 104 again through the first solenoid valve 209 for the next round of grinding. This cycle repeats, and with each cycle, the particle size of the pigment particles in the ink gradually decreases, and the dispersion uniformity gradually improves.

[0027] Furthermore, a cover 204 is bolted to the top of the mixing drum 203. A stirring rod 207 is rotatably connected to the bottom center of the cover 204 via a bearing. A second variable frequency motor 205 is fixedly mounted to the top of the cover 204 via a flange, and the second variable frequency motor 205 is connected to the stirring rod 207 via a transmission connection. The second variable frequency motor 205 drives the stirring rod 207 to rotate at high speed. The second variable frequency motor 205, in conjunction with a reduction mechanism, achieves a suitable stirring speed to drive the stirring rod 207 to rotate, maintaining the uniform dispersion of ink inside the mixing drum and preventing pigment particles from settling and separating. The bolted cover 204 is easy to disassemble, facilitating the addition of raw materials and maintenance of the stirring rod 207.

[0028] Furthermore, a heating jacket 208 is fitted on the outer side of the mixing drum 203, and a temperature sensor 206 is embedded in the inner wall of the mixing drum 203. The heating jacket 208 adjusts the ink temperature inside the mixing drum 203 to match the optimal ink dispersion temperature, and the temperature sensor 206 monitors the temperature parameters in real time.

[0029] Furthermore, a grinding roller 111 is rotatably connected to one end of the grinding cylinder 104, and a fixing frame 110 is installed at the other end of the grinding cylinder 104. The other end of the grinding roller 111 is rotatably connected to the center of the fixing frame 110. The grinding roller 111 and the fixing frame 110 cooperate to rotate at high speed inside the grinding cylinder 104. Together with the grinding media filled inside, they refine, grind and shear the pigment particles in the ink, break up the agglomeration structure, improve the uniformity of ink dispersion, and fundamentally inhibit stratification. The fixing frame 110 ensures the stable rotation of the grinding roller 111 and avoids deviation that would lead to uneven grinding.

[0030] Furthermore, a transmission box 103 is fixedly installed at one end of the base frame 101, and a first variable frequency motor 102 is fixedly connected to the outside of the transmission box 103. The first variable frequency motor 102 achieves speed regulation through a frequency converter. A pair of synchronous pulleys 114 are rotatably connected inside the transmission box 103. The pair of synchronous pulleys 114 are connected by a synchronous belt. One side of the central shaft of one of the synchronous pulleys 114 is connected to one end of the grinding roller 111. The synchronous pulley 114 cooperates with the synchronous belt to smoothly transmit the power of the first variable frequency motor 102 to the grinding roller 111, realize precise speed change transmission, ensure the stable speed of the grinding roller 111, and adapt to the grinding needs of inks with different viscosities.

[0031] Furthermore, a tensioning pulley 115 is rotatably connected inside the transmission box 103 near the synchronous belt. The tensioning pulley 115 abuts against the outer side of the synchronous belt. The tensioning pulley 115 is always in contact with the synchronous belt, which increases the tension of the synchronous belt, prevents slippage during transmission, ensures the accuracy and stability of power transmission, and extends the service life of the synchronous belt.

[0032] Specifically, the working principle of this anti-separation device for water-based decorative paper ink is as follows: During use, the cylinder cover 204 is opened, and water-based ink raw materials are added to the stirring cylinder 203. The second variable frequency motor 205 drives the stirring rod 207 to rotate at high speed for pre-stirring. The heating jacket 208 adjusts the ink temperature to the optimal dispersion state, and the temperature sensor 206 monitors the temperature in real time. The first solenoid valve 209 is opened, and the ink flows into the grinding cylinder 104. The first variable frequency motor 102 is driven by the synchronous pulley 114, synchronous belt, and tensioning pulley 115 in the transmission box 103, driving the grinding roller 111 to rotate at high speed under the support of the fixed frame 110. This, combined with the zirconia ceramic grinding beads, refines and grinds the agglomerated particles in the ink. After shearing and grinding, the ink passes through the filter screen of filter cartridge 109 to filter impurities. The circulation pump 202 returns the filtered ink to the stirring drum 203 through the connecting pipe 108, forming an integrated treatment of stirring-grinding-filtration-circulation, which inhibits stratification from the source. When the filter screen is clogged, the air compressor 105 can be started after the ink circulates into the stirring drum 203. The second solenoid valve 106 opens, and high-pressure gas is evenly sprayed through the backflush pipe 113 and backflush disc 112 to clean the filter screen. The blown-down impurities flow back into the sand mill 104 for subsequent grinding. The one-way valve 116 ensures the pressure balance inside the sand mill 104. The whole process achieves ink anti-stratification treatment and ensures the printing quality of decorative paper.

[0033] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for preventing delamination of water-based inks on decorative paper, characterized in that: It includes a grinding mechanism (1) and a stirring mechanism (2). The grinding mechanism (1) includes a base frame (101). A sand mill cylinder (104) is fixedly installed on the upper end of the base frame (101). A mounting cylinder (107) is connected to one end of the sand mill cylinder (104) by a flange. A filter cylinder (109) is fixedly installed inside the mounting cylinder (107). A filter screen (117) is provided at one end of the filter cylinder (109). One end of the mounting cylinder (107) is connected to a connecting pipe (108), and one end of the connecting pipe (108) extends into the interior of the filter cartridge (109). A backflush disc (112) is fitted on the outer wall of the connecting pipe (108). Several slit-type air jets (118) are opened on the backflush disc (112). A backflush pipe (113) is installed on one side of the mounting cylinder (107). One end of the backflush pipe (113) passes through the mounting cylinder (107) and the filter cartridge (109) in sequence and extends into the interior to communicate with the backflush disc (112), which is used for online cleaning of the filter screen and realizing the return of impurities for re-grinding.

2. The device for preventing delamination of water-based ink on decorative paper according to claim 1, characterized in that: The other end of the backflush pipe (113) is fitted with a second solenoid valve (106). An air compressor (105) is fixedly connected to one side of the base frame (101). The output end of the air compressor (105) is fixedly connected to the second solenoid valve (106). A one-way valve (116) is installed on one side of the top of the sand mill (104) to maintain the pressure balance inside the sand mill (104) during the backflush process.

3. The device for preventing delamination of water-based ink on decorative paper according to claim 2, characterized in that: The stirring mechanism (2) includes a support frame (201), the bottom end of which is fixedly connected to one side of the top end of the base frame (101), and a stirring cylinder (203) is fixedly connected to the top end of the support frame (201). A first solenoid valve (209) is fitted at the bottom outlet of the stirring cylinder (203), and the bottom end of the first solenoid valve (209) is connected to the input end of the grinding cylinder (104).

4. The device for preventing delamination of water-based ink on decorative paper according to claim 3, characterized in that: A circulation pump (202) is fixedly connected to one side of the support frame (201). The input end of the circulation pump (202) is connected to the other end of the connecting pipe (108) through a pipe. The output end of the circulation pump (202) is connected to the upper side of the stirring drum (203) through a pipe.

5. The device for preventing delamination of water-based ink on decorative paper according to claim 4, characterized in that: The top of the mixing drum (203) is bolted with a cover (204), and a stirring rod (207) is rotatably connected to the bottom center of the cover (204). A second variable frequency motor (205) is fixedly installed on the top of the cover (204), and the output end of the second variable frequency motor (205) is connected to the stirring rod (207) for transmission.

6. The device for preventing delamination of water-based inks on decorative paper according to claim 5, characterized in that: The stirring cylinder (203) is fitted with a heating sleeve (208) on the outside, and a temperature sensor (206) is embedded in the inner wall of the stirring cylinder (203).

7. The device for preventing delamination of water-based ink on decorative paper according to claim 1, characterized in that: A grinding roller (111) is rotatably connected to one end of the inside of the grinding cylinder (104), and a fixing frame (110) is installed at the other end of the inside of the grinding cylinder (104). The other end of the grinding roller (111) is rotatably connected to the center of the fixing frame (110).

8. The device for preventing delamination of water-based ink on decorative paper according to claim 1, characterized in that: A transmission box (103) is fixedly connected to one end of the base frame (101). A pair of synchronous pulleys (114) are rotatably connected inside the transmission box (103). The pair of synchronous pulleys (114) are connected by a synchronous belt. The central axis of one of the synchronous pulleys (114) is fixedly connected to one end of the grinding roller (111). A first variable frequency motor (102) is fixedly connected to the bottom side of the transmission box (103). The output end of the first variable frequency motor (102) is connected to the other synchronous pulley (114) for transmission.

9. A device for preventing delamination of water-based inks on decorative paper according to claim 8, characterized in that: The transmission box (103) has a tensioning pulley (115) rotatably connected to the side of the synchronous belt, and the tensioning pulley (115) abuts against the outer side of the synchronous belt.

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