Search

CN-117984658-B - Energy-saving circulating type water-based gravure drying device

CN117984658BCN 117984658 BCN117984658 BCN 117984658BCN-117984658-B

Abstract

The invention discloses an energy-saving circulating type water-based gravure drying device which comprises a supporting component for supporting printed matters, wherein an isolation cover is arranged on the outer side of the supporting component, a drying cavity for drying printing ink of the printed matters is formed in a gap between the supporting component and the isolation cover, the periphery of the drying cavity is hermetically sealed, an air return port is arranged on one side, far away from the supporting component, of the drying cavity, a pre-drying section with a partition air nozzle is arranged between the air return port and a feeding port, a strong drying section with a main air nozzle is arranged between the air return port and a discharging port, the air return port is communicated with an air inlet of a main air blower, an air outlet of the main air blower is respectively communicated with the main air nozzle and the partition air nozzle, and an air treatment component is arranged between the air blower and the air return port. The invention adopts a drying mode combining the relatively low wind speed pre-drying and the relatively high wind speed strong drying based on closed air circulation to reduce the influence of high-speed air flow on ink marks, and simultaneously purifies and controls the temperature of the circulating air, thereby realizing energy conservation and simultaneously ensuring the quality and the drying speed of the water-based gravure.

Inventors

  • HUA ZHIXIANG
  • WEI HONGFAN
  • FENG MING
  • HONG YUSHENG
  • CAI WEI
  • HONG ZHIQIANG
  • QIN JIYAO
  • DENG GUOZHONG

Assignees

  • 杭州顶正包材有限公司
  • 昆山帆宏新材料技术有限公司
  • 广东天龙油墨有限公司

Dates

Publication Date
20260512
Application Date
20240105

Claims (10)

  1. 1. The energy-saving circulating type water-based gravure drying device is characterized by comprising a planar or arc-shaped supporting component (10) for supporting a printed matter (80), wherein an isolation cover (40) is arranged on the outer side of the supporting component (10), a gap between the isolation cover (40) and the supporting component (10) forms a drying cavity (43) for drying printing ink of the printed matter (80), the periphery of the drying cavity (43) is hermetically sealed, and two ends of the drying cavity are respectively provided with a feed inlet (41) and a discharge outlet (42) for the printed matter (80) to enter and exit; the bearing assembly (10) comprises a heating plate (11) which is close to and heats the printed matter (80), a plurality of rollers (14) which isolate the printed matter (80) from the heating plate (11) are arranged between the heating plate (11) and the printed matter (80), and the rollers (14) are in rolling contact with the printed matter (80); An air return opening (33) is arranged on one side, far away from the bearing component (10), of the drying cavity (43), a pre-drying section is arranged between the air return opening (33) and the feeding opening (41), an air blocking air nozzle (31) is arranged in the pre-drying section, a strong drying section is arranged between the air return opening (33) and the discharging opening (42), a main air nozzle (30) is arranged in the strong drying section, an air outlet of the main air nozzle (30) faces the air return opening (33), the relative speed of air flow and a printed matter (80) in the pre-drying section is lower than the relative speed of air flow and the printed matter (80) in the strong drying section, the air flow direction of the air blocking air nozzle (31) moves in the same direction as the printed matter (80), the air flow of the main air nozzle (30) reversely flows with the conveying direction of the printed matter (80), one end, far away from the isolation cover (40), of the main air nozzle (30) and the air blocking air nozzle (31) are respectively communicated with the air inlet (33) of the main air outlet (20) of the main air blower through an air outlet pipe (32); A spoiler (44) is arranged on the isolation cover (40) between the main tuyere (30) and/or the isolation tuyere 31 and the return air inlet (33); An air treatment assembly (60) is arranged between the main fan (20) and the return air inlet (33) and/or on the air outlet pipe (32), the air treatment assembly (60) at least comprises a gas-liquid separator, and an angle adjusting device is arranged on the main air nozzle (30) and/or the partition air nozzle (31).
  2. 2. The energy-saving circulating type water-based gravure drying device according to claim 1, wherein the spoiler (44) is a thin-wall arc-shaped structure, one end of the spoiler (44) is connected with the isolation cover (40), the other end is a free end, and the normal line of the arc is oriented to one side of the air return opening (33).
  3. 3. The energy-saving circulating type water-based gravure drying device according to claim 1, wherein the air return opening (33) is close to the feed opening (41), one air isolating nozzle (31) is arranged, two or more main nozzles (30) are arranged, and air quantity valves (70) are arranged on air outlet pipes (32) corresponding to the main nozzles (30) and/or the air isolating nozzles (31).
  4. 4. The energy-saving circulating type water-based gravure drying device according to claim 1, wherein a main blowing angle (a) of the main tuyere (30) is not less than 30 degrees.
  5. 5. The energy-saving circulating type water-based gravure drying device according to claim 1, wherein the air treatment assembly (60) comprises one or a combination of a purification module (61) for purifying air and a heat exchange module (62) for controlling the temperature of air.
  6. 6. The energy-saving circulating type water-based gravure drying device according to claim 5, wherein the purification module (61) comprises one or a combination of a centrifugal gas-liquid separator and an adsorption filter.
  7. 7. The energy-saving circulating type water-based gravure drying device according to claim 1 or 5, wherein the air treatment assembly (60) is arranged between the main fan (20) and the return air inlet (33), a return air fan (50) is arranged between the main fan (20) and the return air inlet (33), and an air pressure balance valve (71) is arranged between the return air fan (50) and the main fan (20).
  8. 8. The energy-saving circulating type water-based gravure drying device according to claim 1, wherein a follow-up belt (13) is arranged between the rollers (14) of the bearing assembly (10) and the printed matter (80), at least one of the rollers (14) is connected with a driver, the follow-up belt (13) is of a thin-wall annular body structure, and the follow-up belt (13) is in sliding friction-free surface contact with the printed matter (80).
  9. 9. The energy-saving circulating type water-based gravure drying device according to claim 1, wherein a wind blocking wheel (45) is arranged between the feeding port (41) and the wind blocking nozzle (31) and/or between the discharging port (42) and the main wind nozzle (30).
  10. 10. The energy-saving circulating type water-based gravure drying device according to claim 1, wherein the angle adjusting device comprises a fixed end and a rotating end for changing the relative angles of the main air nozzle (30) and the partition air nozzle (31) and the printed matter (80), the fixed end is connected with the isolation cover (40), and the rotating end is connected with the main air nozzle (30) and the partition air nozzle (31).

Description

Energy-saving circulating type water-based gravure drying device Technical Field The invention relates to the technical field of printing and drying, in particular to an energy-saving circulating water-based gravure drying device. Background Gravure printing has a certain irreplaceability due to its outstanding printing quality, and in recent years, with the development of aqueous ink technology, aqueous ink is increasingly used in gravure printing in large quantities. However, since water is mainly used as a solvent, the water-based ink has a problem of slower drying speed compared with solvent ink, and along with development of gravure technology, the gravure speed has exceeded 600 meters/min, and the drying speed of the existing drying device has severely restricted the improvement of the water-based gravure speed. The incomplete drying of the ink during printing, such as printed matter, can lead to serious print quality problems such as moisture residue, back adhesion and the like. Therefore, it is needed to design a drying device for water-based gravure according to the characteristics of the water-based ink and gravure process. Disclosure of Invention In order to overcome the defects of the prior art, the invention aims to provide an energy-saving circulating type water-based gravure drying device, which adopts a drying mode combining relatively low-wind-speed pre-drying and relatively high-wind-speed strong drying to reduce the influence of high-speed air flow on ink marks according to the characteristics of water-based ink and gravure technology, adopts a closed air recycling mode to reduce heat loss, and simultaneously purifies and controls temperature of circulating air to realize energy conservation and ensure the quality and drying speed of water-based gravure. In order to solve the problems, the technical scheme adopted by the invention is as follows: The energy-saving circulating type water-based gravure drying device is characterized by comprising a planar or arc-shaped supporting component (10) for supporting a printed matter (80), wherein an isolation cover (40) is arranged on the outer side of the supporting component (10), a gap between the isolation cover (40) and the supporting component (10) forms a drying cavity (43) for drying printing ink of the printed matter (80), the periphery of the drying cavity (43) is hermetically sealed, and two ends of the drying cavity are respectively provided with a feed inlet (41) and a discharge outlet (42) for the printed matter (80) to enter and exit; the bearing assembly (10) comprises a heating plate (11) which is close to and heats the printed matter (80), a plurality of rollers (14) which isolate the printed matter (80) from the heating plate (11) are arranged between the heating plate (11) and the printed matter (80), and the rollers (14) are in rolling contact with the printed matter (80); An air return opening (33) is formed in one side, far away from the bearing assembly (10), of the drying cavity (43), a pre-drying section is arranged between the air return opening (33) and the feeding opening (41), a partition air nozzle (31) is arranged in the pre-drying section, a strong drying section is arranged between the air return opening (33) and the discharging opening (42), a main air nozzle (30) is arranged in the strong drying section, an air outlet of the main air nozzle (30) faces the air return opening (33), and the relative speed between air flow and a printed matter (80) in the pre-drying section is lower than that between air flow and the printed matter (80) in the strong drying section; One end of the air return opening (33) far away from the isolation cover (40) is provided with a main fan (20), the main air nozzle (30) and the partition air nozzle (31) are respectively communicated with an air outlet of the main fan (20) through an air outlet pipe (32), and an air inlet of the main fan (20) is communicated with the air return opening (33); A spoiler (44) is arranged on the isolation cover (40) between the main tuyere (30) and/or the isolation tuyere 31 and the return air inlet (33); An air treatment assembly (60) is arranged between the main fan (20) and the return air inlet (33) and/or on the air outlet pipe (32), and the air treatment assembly (60) at least comprises a gas-liquid separator. Preferably, the spoiler (44) is a thin-wall arc-shaped structure, one end of the spoiler (44) is connected with the isolation cover (40), the other end is a free end, and the normal line of the arc faces one side of the air return opening (33). Preferably, the return air inlet (33) is close to the feed inlet (41), one partition tuyere (31) is arranged, two or more main tuyere (30) are arranged, and an air quantity valve (70) is arranged on an air outlet pipe (32) corresponding to the main tuyere (30) and/or the partition tuyere (31). Preferably, the main blowing angle (a) of the main tuyere (30) is more than or equal to 30 degrees. Preferably, the