Humidifying device for paper outlet of paperboard drying channel

Abstract

The utility model discloses a humidifying device for a paper outlet of a paperboard drying channel, which comprises a driving roller and a driven roller which are respectively and rotatably mounted at the inner top and the inner bottom of the paper outlet, and a plurality of air holes are uniformly formed in the surfaces of the driving roller and the driven roller. Spraying mechanisms are fixedly installed at the positions, adjacent to the driving roller and the driven roller, of the inner top and the inner bottom of the paper outlet. The paper is clamped by the driven roller and the driving roller, in the clamping process, the driven roller and the driving roller can roll the paper, and the paper is prevented from being bent and warped; water mist can be sprayed to the upper surface and the lower surface of paper through the spraying mechanism, the exhaust fan extracts air in the driving roller and the driven roller, the water mist can flow towards the driving roller and the driven roller under the negative pressure effect, it is guaranteed that the airflow direction is stable, turbulent flow is avoided, and therefore the water mist can evenly fall onto the surface of the paper. And the humidifying uniformity of the paper is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of paper processing, in particular to a humidifying device for a paper outlet of a paperboard drying channel. Background Art

[0002] During the cardboard production process, the drying tunnel's primary function is to remove excess moisture from the cardboard surface, achieving a desired dryness. However, if the drying tunnel temperature is too high or the drying time is too long, the cardboard may become over-dried, resulting in increased surface hardness, decreased flexibility, and even quality issues such as warping and cracking. Therefore, humidification at the paper exit of the drying tunnel is an effective means of improving cardboard quality and increasing product yield.

[0003] The utility model patent with patent authorization announcement number CN215164171U discloses a corrugated cardboard production humidification device. By matching the upper branch pipe, lower branch pipe, water inlet main pipe and control valve, the humidification device can adjust the number of spray heads used according to the width of the base paper, so that water resources can be effectively utilized.

[0004] However, the above device still has some shortcomings in actual use. The most obvious one is that it sprays water through a spray head, but due to the air turbulence in the direction of the paper outlet, the water mist will float out and cannot be evenly sprinkled on the paper surface, which can easily cause the paper to be too wet or too dry, resulting in warping and cracking of the paper.

[0005] Therefore, it is necessary to invent a paper outlet humidifying device for a cardboard drying channel to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a humidifying device for the paper outlet of a cardboard drying tunnel, which solves the problems in the above-mentioned background technology that the water mist cannot evenly contact the paper, the paper is prone to warping and cracking, by arranging an active roller, a driven roller, a spray mechanism and an exhaust fan.

[0007] According to one aspect of the present disclosure, the following technical solution is provided: a humidifying device for a paper outlet of a cardboard drying tunnel, comprising a driving roller and a driven roller rotatably mounted at the top and bottom of the paper outlet, respectively, wherein a plurality of air holes are evenly formed on the surfaces of the driving roller and the driven roller, and a spray mechanism is fixedly mounted at the top and bottom of the paper outlet, adjacent to the driving roller and the driven roller;

[0008] Water tanks are fixedly installed at the upper and lower ends of the paper outlet, and are used to supply water to the spray mechanisms at corresponding positions;

[0009] An exhaust fan is fixedly installed on one side of the paper outlet, and the air outlet of the exhaust fan is connected to the active roller and the driven roller through an air induced joint.

[0010] According to at least one embodiment of the present disclosure, the humidifying device for the paper outlet of the cardboard drying tunnel comprises a spray mechanism having a long box-shaped structure, a plurality of spray holes uniformly opened on its surface along the length direction, and an atomizing sheet fixedly installed inside the spray hole.

[0011] According to the humidifying device for the paper outlet of a cardboard drying tunnel in at least one embodiment of the present disclosure, a motor for driving the active roller to rotate is fixedly mounted on the outer side of the paper outlet.

[0012] According to the humidifying device for the paper outlet of the cardboard drying tunnel in at least one embodiment of the present disclosure, a convex tube is fixedly provided at one end of the driven roller and the active roller, and an air induced joint is fixedly installed at the position of the convex tube on the outer side of the paper outlet, and the convex tube is movably inserted into the air induced joint at the corresponding position.

[0013] According to the humidifying device for the paper outlet of the cardboard drying tunnel of at least one embodiment of the present disclosure, a through hole is provided on the surface of the air induced joint, and the through hole is connected to the air outlet of the exhaust fan through an air duct.

[0014] According to the humidifying device for the paper outlet of the cardboard drying tunnel in at least one embodiment of the present disclosure, a mechanical seal is provided inside the air induced joint, and the mechanical seal is sleeved on the surface of the convex pipe.

[0015] The technical effects and advantages of this utility model are:

[0016] The paper is clamped by the driven roller and the active roller. During the clamping process, the driven roller and the active roller can roll the paper to prevent it from bending or warping.

[0017] Water mist can be sprayed onto the upper and lower surfaces of the paper through the spray mechanism, and the exhaust fan extracts the air inside the active roller and the driven roller. Under the action of negative pressure, the water mist can flow toward the active roller and the driven roller, ensuring the stability of the airflow direction and no turbulence, so that the water mist can fall evenly on the surface of the paper, ensuring the uniformity of the paper humidification. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings illustrate exemplary embodiments of the present disclosure and together with the description serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0019] Figure 1 The figure is a schematic diagram of the overall structure of a humidifying device for a paper outlet of a cardboard drying tunnel according to one embodiment of the present disclosure.

[0020] Figure 2 It is a cross-sectional view of a humidifying device at a paper outlet of a cardboard drying tunnel according to one embodiment of the present disclosure.

[0021] Figure 3The present invention is a schematic diagram of the structure of an air induction joint and a convex pipe of a humidifying device for a paper outlet of a cardboard drying tunnel according to an embodiment of the present invention.

[0022] The specific reference numerals in the figure are:

[0023] 1. Paper outlet; 2. Driven roller; 21. Air hole; 22. Convex pipe; 3. Active roller; 4. Spray mechanism; 41. Spray hole; 5. Water tank; 6. Motor; 7. Exhaust fan; 8. Air induced joint; 81. Through hole; 82. Mechanical seal; 9. Air duct. DETAILED DESCRIPTION

[0024] For descriptive purposes, this disclosure may use spatially relative terms such as "below," "beneath," "beneath," "below," "above," "upper," and "side (e.g., as in "sidewall")," to describe the relationship of one component to another (other) component as shown in the accompanying drawings. The spatially relative terms are intended to encompass different orientations of the device in use, operation, and / or manufacture in addition to the orientation depicted in the accompanying drawings. For example, if the device in the drawings is turned over, a component described as "below" or "beneath" another component or feature would then be oriented "above" the other component or feature. Thus, the exemplary term "below" can encompass both "above" and "below" orientations. Furthermore, the device may be otherwise oriented (e.g., rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein interpreted accordingly.

[0025] like Figure 1-3 As shown, the present disclosure discloses a humidifying device for a paper outlet of a cardboard drying tunnel, comprising a driving roller 3 and a driven roller 2 rotatably mounted at the top and bottom of a paper outlet 1, respectively. A plurality of air holes 21 are evenly formed on the surfaces of the driving roller 3 and the driven roller 2. A spray mechanism 4 is fixedly mounted at the top and bottom of the paper outlet 1 adjacent to the driving roller 3 and the driven roller 2.

[0026] The upper and lower ends of the paper outlet 1 are fixedly mounted with water tanks 5, which are used to supply water to the spray mechanisms 4 at corresponding positions;

[0027] An exhaust fan 7 is fixedly installed on one side of the paper outlet 1 , and the air outlet of the exhaust fan 7 is connected to the active roller 3 and the driven roller 2 through an air induced joint 8 .

[0028] Furthermore, in order to discharge the water in the form of mist with smaller particles, in this embodiment, the spray mechanism 4 is a long box-shaped structure, and a plurality of spray holes 41 are evenly opened on its surface along the length direction. An atomizing sheet is fixedly installed inside the spray hole 41. The atomizing sheet performs high-frequency oscillation atomization and sprays the water evenly on the paper in the form of mist, which can accurately control the humidification amount and avoid over-wetting of the cardboard.

[0029] In order to realize the automatic movement of the paper, in this embodiment, a motor 6 for driving the active roller 3 to rotate is fixedly installed on the outer side of the paper outlet 1.

[0030] In order to ensure that the driven roller 2 and the active roller 3 can smoothly discharge air during the rotation process and play a role in guiding the direction of the water mist, in this embodiment, a convex tube 22 is fixedly provided at one end of the driven roller 2 and the active roller 3, and an air induced joint 8 is fixedly installed at the position of the convex tube 22 on the outside of the paper outlet 1, and the convex tube 22 is movably inserted into the air induced joint 8 at the corresponding position.

[0031] Furthermore, in this embodiment, a through hole 81 is opened on the surface of the air induced joint 8, and the through hole 81 is connected to the air outlet of the exhaust fan 7 through the air duct 9.

[0032] Furthermore, in order to ensure sealing, the air inside the driven drum 2 and the active drum 3 can be discharged by the exhaust fan 7 through the induced draft joint 8. In this embodiment, a mechanical seal 82 is provided inside the induced draft joint 8, and the mechanical seal 82 is sleeved on the surface of the convex tube 22.

[0033] The specific operation steps are as follows: the paper entering the paper outlet 1 from the drying tunnel is clamped by the driven roller 2 and the driving roller 3, and water mist is sprayed on the upper and lower surfaces of the paper through the spray mechanism 4. The exhaust fan 7 is started to extract the air inside the driving roller 3 and the driven roller 2, so that under the action of negative pressure, the water mist can flow to the position of the driving roller 3 and the driven roller 2, so that the water mist can evenly fall on the surface of the paper.

[0034] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments / methods or examples. In addition, those skilled in the art may combine and combine different embodiments / methods or examples described in this specification and the features of different embodiments / methods or examples, unless they are contradictory.

[0035] 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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0036] Those skilled in the art will appreciate that the above embodiments are merely intended to clearly illustrate the present disclosure and are not intended to limit the scope of the present disclosure. Other changes or modifications may be made based on the above disclosure, and such changes or modifications are still within the scope of the present disclosure.

Claims

1. A humidifying device for a paper outlet of a cardboard drying tunnel, characterized in that: It includes a driving roller and a driven roller rotatably mounted at the top and bottom of the paper outlet respectively, a plurality of air holes are evenly opened on the surfaces of the driving roller and the driven roller, and a spray mechanism is fixedly mounted at the top and bottom of the paper outlet adjacent to the driving roller and the driven roller; Water tanks are fixedly installed at the upper and lower ends of the paper outlet, and are used to supply water to the spray mechanisms at corresponding positions; An exhaust fan is fixedly installed on one side of the paper outlet, and the air outlet of the exhaust fan is connected to the active roller and the driven roller through an air induced joint.

2. The humidifying device for the paper outlet of the cardboard drying tunnel according to claim 1, characterized in that: The spray mechanism is a long strip box-shaped structure, a plurality of spray holes are evenly opened on its surface along the length direction, and an atomizing sheet is fixedly installed inside the spray hole.

3. The humidifying device for the paper outlet of a cardboard drying tunnel according to claim 1, characterized in that: A motor for driving the active roller to rotate is fixedly installed on the outer side of the paper outlet.

4. The humidifying device for the paper outlet of a cardboard drying tunnel according to claim 1, characterized in that: One end of the driven roller and the active roller are both fixedly provided with a convex tube, and an air induced joint is fixedly installed at the convex tube position outside the paper outlet, and the convex tube is movably inserted into the air induced joint at the corresponding position.

5. The humidifying device for the paper outlet of the cardboard drying tunnel according to claim 4, characterized in that: A through hole is provided on the surface of the air induced joint, and the through hole is connected to the air outlet of the exhaust fan through an air duct.

6. The humidifying device for the paper outlet of a cardboard drying tunnel according to claim 4, characterized in that: The inside of the induced draft joint is provided with a mechanical seal, which is sleeved on the surface of the convex pipe.

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