Sheet drying device

Abstract

The utility model relates to the field of sheet production and manufacturing, in particular to a sheet drying device, which is provided with a sheet channel for sheets to pass through, and comprises an upper heating mantle, a lower heating mantle, a plurality of lower heating pipes, a plurality of lower heating pipes, a plurality of lower heating pipes, a plurality of lower heating pipes and a plurality of lower heating pipes, wherein the upper heating mantle is provided with a first mantle body and a plurality of upper heating pipes are fixedly arranged on the first mantle body; the lower heating cover can move relative to the upper heating cover, the lower heating cover is provided with a second cover body and a plurality of lower heating pipes fixedly installed on the second cover body, and the lower heating pipes are close to the sheet channel; and the fan unit comprises a plurality of upper fans fixed to the upper heating cover and a plurality of lower fans fixed to the lower heating cover, and the upper fans and the lower fans are in fluid communication with the sheet channel. The plurality of upper fans form forced convection between the upper side surface of the sheet and the upper heating pipe so as to quickly dry a coating on the upper side surface of the sheet; and the plurality of lower fans form forced convection between the lower side surface of the sheet and the lower heating pipe so as to quickly dry a coating on the lower side surface of the sheet.

Description

Technical Field

[0001] The utility model relates to the field of sheet material production and manufacturing, in particular to a sheet material drying device for drying double-sided surface coatings of a sheet material. Background Art

[0002] There are currently sheets with double coatings. These coatings are formed by applying a coating to both sides of a substrate and then drying it. Sheet drying equipment dries and removes moisture from the surface coatings of the sheet. In actual use, sheet drying equipment can cause uneven coating thickness on sheet surfaces with high fluidity (such as silicone oil coatings), resulting in lower quality finished sheets if the coatings cannot be dried quickly. Utility Model Content

[0003] The purpose of the utility model is to provide a novel sheet material drying device, which can quickly dry the surface coatings on both sides of the sheet material, and is particularly suitable for sheets with surface coatings having high fluidity.

[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sheet drying device, formed with a sheet channel for sheets to pass through, the sheet drying device comprising: an upper heating hood, having a first hood body and a plurality of upper heating tubes fixedly mounted on the first hood body, the upper heating tubes being close to the sheet channel; a lower heating hood, movable relative to the upper heating hood, the lower heating hood having a second hood body and a plurality of lower heating tubes fixedly mounted on the second hood body, the lower heating tubes being close to the sheet channel; and a fan unit, comprising a plurality of upper fans fixed to the upper heating hood and a plurality of lower fans fixed to the lower heating hood, the upper fans and the lower fans being fluidically connected to the sheet channel.

[0005] In the above technical solution, preferably, the sheet drying device further comprises a pair of opening and closing cylinders, each of which comprises a cylinder body and a cylinder shaft that is retractable relative to the cylinder body. One of the first cover body and the second cover body is fixedly connected to the cylinder body, and the other of the first cover body and the second cover body is fixedly connected to the cylinder shaft. It is further preferred that the lower heating cover further comprises a pair of cylinder seats fixedly mounted on the second cover body, the second cover body having a pair of through holes formed therein, the cylinder body fixedly mounted on the cylinder seats, the cylinder shaft passing through the through holes and fixedly connected to the first cover body. It is further preferred that a high-temperature resistant buffer pad is disposed between the upper heating cover and the lower heating cover.

[0006] In the above technical solution, preferably, the several upper heating tubes are arranged in sequence at intervals along the moving direction of the sheet, and each of the upper heating tubes extends along the width direction of the sheet; the several lower heating tubes are arranged in sequence at intervals along the moving direction of the sheet, and each of the lower heating tubes extends along the width direction of the sheet.

[0007] In the above technical solution, preferably, the upper heating cover also includes an upper insulation pad arranged between the first cover body and the plurality of upper heating tubes; the lower heating cover also includes a lower insulation pad arranged between the second cover body and the plurality of lower heating tubes.

[0008] In the above technical solution, preferably, the first cover body and the second cover body are both made of stainless steel.

[0009] In the above technical solution, preferably, the upper heating tube and the lower heating tube are both quartz heating tubes.

[0010] In the above technical solution, preferably, both the upper fan and the lower fan are axial flow fans.

[0011] In the above technical solution, preferably, the upper heating cover and / or the lower heating cover are equipped with a thermocouple thermometer to detect the temperature of the sheet channel.

[0012] The sheet drying device provided by the technical solution of the present invention can heat the air on both sides of the sheet through a plurality of upper heating tubes and a plurality of lower heating tubes respectively. A plurality of upper fans form forced convection between the upper surface of the sheet and the upper heating tubes to quickly dry the coating on the upper surface of the sheet; a plurality of lower fans form forced convection between the lower surface of the sheet and the lower heating tubes to quickly dry the coating on the lower surface of the sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A top view of the sheet drying device provided by the utility model;

[0014] Figure 2 for Figure 1 A front view of the sheet drying device shown;

[0015] Figure 3 for Figure 2 The sheet drying device is shown in a cross-sectional view at AA.

[0016] Note in the figure:

[0017] Sheet drying device;

[0018] Upper heating cover; 11, first cover body; 12, upper heating tube; 13, upper insulation pad; 14, first mounting plate;

[0019] Lower heating cover; 21, second cover body; 22, lower heating pipe; 23, lower insulation pad; 24, second mounting plate; 25, through hole;

[0020] Sheet channel;

[0021] Upper fan; 42, lower fan;

[0022] 5. Opening and closing cylinder; 51. Cylinder body; 52. Cylinder shaft. DETAILED DESCRIPTION

[0023] In order to explain the technical content, structural features, achieved objectives and effects of this application in detail, the technical solutions in the embodiments of this application will be described below in conjunction with the drawings in the embodiments of this application.

[0024] In this application, spatially relative terms such as "under," "beneath," "under," "down," "over," "up," "above," "higher," "side" (e.g., as in "sidewall"), etc., are used to describe the relationship of one element to another (other) element as shown in the accompanying drawings. 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, an element described as "under" or "beneath" other elements or features would then be positioned "over" the other elements or features. Thus, the exemplary term "under" can include both above and below orientations. Furthermore, the device can be positioned otherwise (e.g., rotated 90 degrees or at other orientations), and as such, the spatially relative descriptors used herein should be interpreted accordingly.

[0025] See Figure 1-3 This application provides a sheet drying device 100 designed to quickly dry coatings on sheet materials. As shown, the sheet drying device 100 comprises an upper heating hood 1, a lower heating hood 2 movable relative to the upper heating hood 1, a fan unit for forced convection, and a pair of opening and closing cylinders 5. The upper heating hood 1 and the lower heating hood 2 together form a sheet passage 3 through which sheets can pass through the sheet drying device 100.

[0026] The upper heating hood 1 includes a first hood body 11 and a plurality of upper heating tubes 12 fixedly mounted on the first hood body 11 and adjacent to the sheet passage 3. The plurality of upper heating tubes 12 are arranged in a sequentially spaced arrangement along the direction of sheet movement, and each upper heating tube 12 extends along the width of the sheet to uniformly heat the upper surface of the sheet.

[0027] Furthermore, the upper heating hood 1 is also provided with an upper insulation pad 13 located between the upper heating tube 12 and the first hood body 11 to reduce the heat transferred from the upper heating tube 12 to the outside, thereby improving the energy utilization rate of the sheet drying device 100 and lowering the temperature of the first hood body 11 to prevent the staff from being scalded by the first hood body 11.

[0028] The lower heating hood 2 includes a second hood body 21 and a plurality of lower heating tubes 22 fixedly mounted on the second hood body 21 and located near the sheet passage 3. The plurality of lower heating tubes 22 are arranged in a sequentially spaced arrangement along the direction of sheet movement, and each lower heating tube 22 extends along the width of the sheet to uniformly heat the lower surface of the sheet.

[0029] Similarly, the lower heating hood 2 is also equipped with a lower insulation pad 23 located between the lower heating tube 22 and the second hood body 21 to reduce the heat transferred to the outside by the lower heating tube 22, thereby improving the energy utilization rate of the sheet drying device 100 and lowering the temperature of the second hood body 22 to prevent the staff from being scalded by the second hood body 21.

[0030] Furthermore, both the upper heating tube 12 and the lower heating tube 22 provided in this embodiment are quartz heating tubes. These tubes have an outer tube (not shown) made of high-purity quartz and a heating filament mounted within the tube. Quartz heating tubes offer numerous advantages, including high-temperature resistance, corrosion resistance, and excellent thermal stability. They are particularly well-suited for drying sheet coatings, which require precise control of the drying temperature and can also cause contamination of the tubes by dripping coating.

[0031] Furthermore, the first and second covers provided in this embodiment are both made of stainless steel, so as to prevent the first and second covers from being corroded or rusted in a high temperature and high humidity environment while ensuring their strength.

[0032] Furthermore, the upper heating hood 1 and / or the lower heating hood 2 of the sheet drying device 100 provided in this embodiment are also equipped with a thermocouple thermometer (not marked in the figure) for monitoring the temperature of the sheet channel 3. The signal of the thermocouple thermometer 31 is connected to the upper and lower heating tubes to accurately control the temperature of the sheet channel 3.

[0033] The fan assembly includes a plurality of upper fans 41 respectively arranged on the upper heating cover 1 and a plurality of lower fans 42 respectively arranged on the lower heating cover 2. Specifically, the upper heating cover 1 also includes a first mounting plate 14 fixedly connected to the first cover body 11, and the plurality of upper fans 41 are fixedly mounted on the first mounting plate 14 and spaced apart in sequence along the width direction of the sheet; the lower heating cover 2 also includes a second mounting plate 24 fixedly connected to the second cover body 21, and the plurality of lower fans 42 are fixedly mounted on the second mounting plate 24 and spaced apart in sequence along the width direction of the sheet.

[0034] Each upper fan 41 and each lower fan 42 are in fluid communication with the sheet channel 3. The upper fans 41 create forced convection between the upper heating tube 12 and the upper surface of the sheet, accelerating the drying of the coating on the upper surface of the sheet. The lower fans 42 create forced convection between the lower heating tube 22 and the lower surface of the sheet, accelerating the drying of the coating on the lower surface of the sheet.

[0035] Furthermore, each of the upper fans 41 and lower fans 42 provided in this embodiment is an axial flow fan. This type of fan has a large flow rate and a low wind pressure, and is particularly suitable for drying fluid surface coatings.

[0036] A pair of opening and closing cylinders 5 is used to realize the opening and closing of the upper heating cover 1 and the lower heating cover 2. Specifically, a pair of cylinder seats (not marked in the figure) are fixedly mounted on the second cover body 21 and are provided with a pair of through holes 25. Each opening and closing cylinder 5 has a cylinder body 51 fixedly set on the cylinder seat and a cylinder shaft 52 that can be extended and retracted relative to the cylinder body 51. Each cylinder shaft 52 passes through the through hole 25 of the second cover body 21 and is fixedly connected to the first cover body 11. Thus, the pair of opening and closing cylinders 5 can drive the upper heating cover 1 and the lower heating cover 2 to separate and merge relative to each other, so that the staff can load the sheet. In other embodiments, the cylinder body of the opening and closing cylinder can also be fixedly connected to the first cover body, while the cylinder shaft is fixedly connected to the second cover body.

[0037] Furthermore, a high-temperature buffer pad (not marked in the figure) is arranged between the first and second covers to prevent the first and second covers from colliding violently and damaging the heating tube when the pair of opening and closing cylinders 5 merge the first and second covers.

[0038] The above embodiments are intended only to illustrate the technical concepts and features of this application. Their purpose is to enable those familiar with the art to understand the content of this application and implement it accordingly. They are not intended to limit the scope of protection of this application. Any equivalent changes or modifications made in accordance with the spirit of this application shall be included in the scope of protection of this application.

Claims

1. A sheet drying device, having a sheet passage for the sheet to pass through, characterized in that: The sheet drying device comprises: An upper heating cover comprises a first cover body and a plurality of upper heating tubes fixedly mounted on the first cover body, wherein the upper heating tubes are close to the sheet channel; a lower heating cover movable relative to the upper heating cover, the lower heating cover comprising a second cover body and a plurality of lower heating tubes fixedly mounted on the second cover body, the lower heating tubes being close to the sheet passage; and The fan group includes a plurality of upper fans fixed to the upper heating cover and a plurality of lower fans fixed to the lower heating cover. The upper fans and the lower fans are both fluidically connected to the sheet channel.

2. The sheet drying device according to claim 1, characterized in that: It also includes a pair of opening and closing cylinders, which have a cylinder body and a cylinder shaft that can be extended and retracted relative to the cylinder body. One of the first cover body and the second cover body is fixedly connected to the cylinder body, and the other of the first cover body and the second cover body is fixedly connected to the cylinder shaft.

3. The sheet drying device according to claim 2, characterized in that: The lower heating cover also includes a pair of cylinder seats fixedly mounted on the second cover body. The second cover body is provided with a pair of through holes. The cylinder body is fixedly mounted on the cylinder seats. The cylinder shaft passes through the through holes and is fixedly connected to the first cover body.

4. The sheet drying device according to any one of claims 1 to 3, characterized in that: A high-temperature resistant buffer pad is arranged between the upper heating cover and the lower heating cover.

5. The sheet drying device according to claim 1, characterized in that: Several of the upper heating tubes are arranged in sequence at intervals along the moving direction of the sheet, and each of the upper heating tubes extends along the width direction of the sheet; several of the lower heating tubes are arranged in sequence at intervals along the moving direction of the sheet, and each of the lower heating tubes extends along the width direction of the sheet.

6. The sheet drying device according to claim 1 or 5, characterized in that: The upper heating cover further includes an upper insulation pad arranged between the first cover body and the plurality of upper heating tubes; the lower heating cover further includes a lower insulation pad arranged between the second cover body and the plurality of lower heating tubes.

7. The sheet drying device according to claim 1, characterized in that: The first cover body and the second cover body are both made of stainless steel.

8. The sheet drying device according to claim 1, characterized in that: The upper heating tube and the lower heating tube are both quartz heating tubes.

9. The sheet drying device according to claim 1, characterized in that: The upper fan and the lower fan are both axial flow fans.

10. The sheet drying device according to claim 1, characterized in that: The upper heating cover and / or the lower heating cover are equipped with thermocouple thermometers to detect the temperature of the sheet channel.

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