Humidifying system of rotary offset press

Abstract

The utility model relates to a humidifying system of a rotary offset press, and belongs to the technical field of paper printing. The humidifying system of the rotary offset press comprises a humidifying chamber, an atomization humidifying system and a uniform air guide mechanism, an inlet and an outlet are formed in the two ends of the humidifying chamber respectively, and the atomization humidifying system is installed on one side of the humidifying chamber; the uniform air guide mechanism comprises an air guide pipe and two convection fan sets, the air guide pipe is fixedly connected to the air outlet end of the atomization humidification system, and the air outlet end of the air guide pipe is fixedly connected and communicated with two air distribution pipes; the atomization humidification system conveys water vapor to the humidification chamber through an air guide pipe and an air distribution pipe, and the two convection fan sets form circulating air flow. Airflow takes away moisture when flowing through the inner wall of the humidifying chamber, and condensation of the inner wall is reduced; the water vapor collides with atomized water vapor in the water vapor spraying area, so that the water vapor is uniformly attached to the surface of paper, rapid wetting is realized, and the humidifying effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of paper printing technology, and in particular to a humidification system for a rotary offset printing press. Background Technology

[0002] Rotary offset printing presses employ a continuous rotary-to-rotary printing structure, achieving high-speed roll-to-roll printing through the cooperation of the printing plate cylinder and the blanket cylinder. This makes them particularly suitable for high-volume, fine-grained color printing. To ensure print quality, the paper needs to be humidified before printing. The main functions of this humidification treatment include: compensating for fiber stretching and deformation caused by changes in ambient humidity, eliminating static electricity in the paper, and improving ink adhesion. Modern rotary offset printing press humidification systems typically consist of core components such as a humidification chamber, a water purification unit, an ultrasonic atomizing device, a centrifugal fan, and airflow distribution ducts.

[0003] While existing systems use fans to accelerate the delivery of atomized water vapor to the humidification chamber, flaws in the airflow organization design easily lead to uneven airflow distribution within the chamber. This condition causes condensation to accumulate on the ceiling of the humidification chamber, contaminating the paper surface and affecting subsequent printing quality. Utility Model Content

[0004] Therefore, it is necessary to provide a new humidification system for rotary offset printing presses to address the problem of uneven airflow distribution in existing humidification systems, which affects the quality of subsequent printing.

[0005] A humidification system for a rotary offset printing machine includes: a humidification chamber, an atomizing humidification system, and a uniform air guiding mechanism. The humidification chamber has an inlet and an outlet at both ends, and the atomizing humidification system is installed on one side of the humidification chamber.

[0006] In one embodiment, the uniform air guiding mechanism includes an air guiding pipe and two sets of convection fan units. The air guiding pipe is fixedly connected to the air outlet of the atomizing humidification system. The air outlet of the air guiding pipe is fixedly connected to and communicates with two air distribution pipes. One end of the air distribution pipe extends into the interior of the humidification chamber. The two air distribution pipes are symmetrically distributed on both sides of the center point of the humidification chamber. The two sets of convection fan units are respectively fixedly connected to the inner top wall and inner bottom wall of the humidification chamber. Each set of convection fan units consists of two units and is symmetrically distributed on both sides of the air guiding pipe. The air guiding direction of two adjacent convection fan units is the same as the direction of the convection fan units guiding the air guiding pipe.

[0007] In one embodiment, the uniform air guiding mechanism further includes two blocking components. The blocking component near the inlet includes two sets of electric cylinders. The two sets of electric cylinders are respectively fixedly connected to the inner top wall and inner bottom wall of the humidification chamber. The output end of the electric cylinder is fixedly connected to a baffle that contacts the vertical inner wall of the humidification chamber. The two baffles are symmetrically distributed on both sides of the inlet, and the baffles are wider than the width of the inlet.

[0008] In one embodiment, each group of electric cylinders consists of two cylinders, which are symmetrically distributed on both sides of the center point of the baffle.

[0009] In one embodiment, rollers are rotatably connected to the opposite ends of the two baffles, the length of which is greater than the width of the inlet.

[0010] In one embodiment, the surface of the roller is covered with a protective sleeve, which is a plastic material component.

[0011] In one embodiment, the surface of the air distribution pipe is fixedly connected to and communicates with uniformly distributed diversion pipes, the openings of which face the center point of the humidification chamber.

[0012] In one embodiment, the outlet end of the air guide pipe is fixedly connected to and communicates with a diversion valve, and the inlet ends of the two air distribution pipes are respectively fixedly connected to and communicate with two outlet ends of the diversion valve.

[0013] Beneficial effects

[0014] The aforementioned humidification system for the rotary offset printing press utilizes an atomizing humidification system that delivers water vapor to the humidification chamber via air ducts and distribution pipes. Two sets of convection fans create a circulating airflow. As the airflow passes over the inner wall of the humidification chamber, it carries away moisture, reducing condensation. In the water vapor spraying area, the airflow collides with the atomized water vapor, promoting even adhesion of the water vapor to the paper surface, achieving rapid wetting and improving the humidification effect.

[0015] Workers adjust the length of the electric cylinder to move the baffles, causing the rollers to fit against the paper. The two sets of baffles and rollers work together to dynamically seal the inlet and outlet while ensuring the paper passes through. This reduces moisture leakage from the humidification chamber and prevents external impurities from entering, thus stabilizing the environment inside the humidification chamber. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0019] Figure 3 This is a partial structural schematic diagram of the uniform air guiding mechanism in this utility model;

[0020] Figure 4 This is an exploded schematic diagram of the blocking component in this utility model.

[0021] Figure label:

[0022] 100. Humidification chamber; 110. Inlet; 120. Outlet; 200. Atomizing humidification system; 300. Uniform air guiding mechanism; 310. Air guide pipe; 320. Convection fan unit; 330. Air distribution pipe; 340. Baffle assembly; 341. Electric cylinder; 342. Baffle; 343. Roller; 344. Protective sleeve; 350. Diverter pipe; 360. Diverter valve. Detailed Implementation

[0023] 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 only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this specification are for illustrative purposes only and do not represent the only possible implementation.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0028] The following is combined Figures 1-4 This invention describes a humidification system for a rotary offset printing machine.

[0029] In one embodiment, a humidification system for a rotary offset printing machine includes: a humidification chamber 100, an atomizing humidification system 200, and a uniform air guiding mechanism 300. The humidification chamber 100 has an inlet 110 and an outlet 120 at its two ends, respectively, and the atomizing humidification system 200 is installed on one side of the humidification chamber 100.

[0030] The atomizing humidification system 200 includes an atomizing device, a mist conveying device, and a humidification device. The atomizing device mainly consists of a water source, a water purifier, and an ultrasonic humidifier. The water purifier is connected to the water source, and the ultrasonic humidifier is connected to the water purifier. The humidification chamber 100 contains a temperature controller and a humidity controller, both of which are installed inside the humidification chamber 100.

[0031] Component selection: The ultrasonic humidifier uses a high-frequency ultrasonic humidifier with a frequency of 1.7MHz, the water purifier uses a reverse osmosis water purifier, and the air duct 310 and air distribution duct 330 both use pressure-resistant pipes with an inner diameter of 50mm.

[0032] Working process and main principle: Water from the source is purified by a water purifier and then enters the ultrasonic humidifier. The ultrasonic humidifier atomizes the water into tiny water droplets, which are then transported to the humidification chamber 100 through PVC pipes by a fan. Printed paper enters the humidification chamber 100 through the paper inlet, absorbs moisture evenly in the temperature and humidity-controlled chamber, and then exits through the paper outlet, completing the humidification process.

[0033] Operating procedures and precautions:

[0034] S1: Install a water purifier and connect it to the water source to ensure that the water quality meets the requirements;

[0035] S2: Connect the ultrasonic humidifier to the water purifier and turn on the power;

[0036] S3: Start the fan and adjust the air volume to evenly deliver the atomized water to the humidification chamber 100;

[0037] S4: Feed the printing paper into the humidification chamber 100 through the paper inlet, and adjust the temperature and humidity controller to the set value;

[0038] S5: Monitor the humidification effect and adjust the atomized water volume or air volume as necessary.

[0039] Replaceable parts: PVC pipes can be replaced with stainless steel pipes, and ultrasonic humidifiers can be replaced with centrifugal atomizers.

[0040] The optimized solution can adopt a multi-stage humidification chamber 100 design, that is, a pre-humidification chamber 100 is added in front of the main humidification chamber 100. The pre-humidification chamber 100 adopts a low-pressure spray humidification method, while the main humidification chamber 100 adopts an ultrasonic atomization humidification method. The two-stage humidification can further improve the uniformity and efficiency of humidification.

[0041] like Figure 2 , Figure 3 As shown, the uniform air guiding mechanism 300 includes an air guiding pipe 310 and two sets of convection fan units 320. The air guiding pipe 310 is fixedly connected to the air outlet of the atomizing humidification system 200. The air outlet of the air guiding pipe 310 is fixedly connected to and communicates with two air distribution pipes 330. One end of the air distribution pipe 330 extends into the interior of the humidification chamber 100. The two air distribution pipes 330 are symmetrically distributed on both sides of the center point of the humidification chamber 100. The two sets of convection fan units 320 are respectively fixedly connected to the inner top wall and inner bottom wall of the humidification chamber 100. Each set of convection fan units... There are two fan units 320, which are symmetrically distributed on both sides of the air duct 310. The air guiding direction of the two adjacent convection fan units 320 is the same as the direction of the convection fan units 320 to the air duct 310. The surface of the air distribution pipe 330 is fixedly connected and connected to uniformly distributed diverter pipes 350. The opening of the diverter pipes 350 faces the center point of the humidification chamber 100. The air outlet end of the air duct 310 is fixedly connected and connected to a diverter valve 360. The air inlet ends of the two air distribution pipes 330 are respectively fixedly connected and connected to two of the air outlet ends of the diverter valve 360.

[0042] like Figure 4As shown, the uniform air guiding mechanism 300 also includes two blocking components 340. The blocking component 340 near the inlet 110 includes two sets of electric cylinders 341. The two sets of electric cylinders 341 are respectively fixedly connected to the inner top wall and inner bottom wall of the humidification chamber 100. The output end of the electric cylinder 341 is fixedly connected to a baffle 342 that contacts the vertical inner wall of the humidification chamber 100. The two baffles 342 are symmetrically distributed on both sides of the inlet 110. The width of the baffle 342 is greater than the width of the inlet 110. Each set of electric cylinders 341 consists of two, and the two electric cylinders 341 are symmetrically distributed on both sides of the center point of the baffle 342. The opposite ends of the two baffles 342 are rotatably connected to rollers 343. The length of the rollers 343 is greater than the width of the inlet 110. The surface of the rollers 343 is covered with a protective sleeve 344, which is a plastic material component.

[0043] In this embodiment, the operator can adjust the length of the electric cylinder 341 according to the thickness and position of the paper. The electric cylinder 341 drives the connected baffle 342 to move accordingly. The baffle 342 drives the roller 343 to fit the corresponding surface of the paper. At this time, the two sets of baffles 342 and roller 343 can flexibly seal the inlet 110 and outlet 120 without affecting the passage of paper. This not only reduces the leakage of water vapor inside the humidification chamber 100, but also prevents external impurities from entering, effectively reducing the environmental variables inside the humidification chamber 100.

[0044] Working Principle: The atomizing humidification system 200 introduces water vapor into the humidification chamber 100 through the air guide pipe 310 and the air distribution pipe 330. Two sets of opposing convection fan units 320 operate synchronously: on the one hand, they draw air from inside the humidification chamber 100 to form a circulating airflow; on the other hand, they guide the airflow to the water vapor spraying area. As this airflow flows through the inner wall of the humidification chamber 100, it carries away surface moisture, significantly reducing the probability of condensation on the inner wall and thus minimizing interference with the paper's wetting quality. When the airflow reaches the core water vapor spraying area, it collides fully with the atomized water vapor. This interaction allows the water vapor to adhere more efficiently to the paper surface and promotes three-dimensional diffusion of the water vapor, ultimately achieving rapid and uniform wetting of the paper and improving the overall humidification effect.

[0045] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A humidification system for a rotary offset printing press, characterized in that, include: The humidification chamber (100) and the atomizing humidification system (200) are provided. The two ends of the humidification chamber (100) are respectively provided with an inlet (110) and an outlet (120). The atomizing humidification system (200) is installed on one side of the humidification chamber (100). A uniform air guiding mechanism (300) includes an air guiding pipe (310) and two sets of convection fan units (320). The air guiding pipe (310) is fixedly connected to the air outlet of the atomizing humidification system (200). The air outlet of the air guiding pipe (310) is fixedly connected to and communicates with two air distribution pipes (330). One end of the air distribution pipe (330) extends into the interior of the humidification chamber (100). The air distribution pipes (330) are symmetrically distributed on both sides of the center point of the humidification chamber (100). The two sets of convection fan units (320) are fixedly connected to the inner top wall and inner bottom wall of the humidification chamber (100). There are two convection fan units (320) in each set, which are symmetrically distributed on both sides of the air guide pipe (310). The air guiding direction of two adjacent convection fan units (320) is the same as the direction of the convection fan units (320) to the air guide pipe (310).

2. The humidification system for a rotary offset printing machine according to claim 1, characterized in that, The uniform air guiding mechanism (300) also includes two blocking components (340). The blocking component (340) near the inlet (110) includes two sets of electric cylinders (341). The two sets of electric cylinders (341) are respectively fixedly connected to the inner top wall and inner bottom wall of the humidification chamber (100). The output end of the electric cylinder (341) is fixedly connected to a baffle (342) that contacts the vertical inner wall of the humidification chamber (100). The two baffles (342) are symmetrically distributed on both sides of the inlet (110). The baffles (342) are wider than the width of the inlet (110).

3. The humidification system for a rotary offset printing press according to claim 2, characterized in that, Each group of electric cylinders (341) consists of two electric cylinders, which are symmetrically distributed on both sides of the center point of the baffle (342).

4. The humidification system for a rotary offset printing press according to claim 2, characterized in that, Both of the two baffles (342) are rotatably connected to rollers (343) at their opposite ends, and the length of the rollers (343) is greater than the width of the inlet (110).

5. The humidification system for a rotary offset printing press according to claim 4, characterized in that, The surface of the roller (343) is covered with a protective sleeve (344), which is a plastic material component.

6. The humidification system for a rotary offset printing press according to claim 1, characterized in that, The surface of the air distribution pipe (330) is fixedly connected to and connected to a uniformly distributed diversion pipe (350), the opening of which faces the center point of the humidification chamber (100).

7. The humidification system for a rotary offset printing press according to claim 1, characterized in that, The outlet end of the air guide pipe (310) is fixedly connected to and communicates with the diversion valve (360), and the inlet ends of the two air distribution pipes (330) are respectively fixedly connected to and communicate with two outlet ends of the diversion valve (360).

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