BOPP film drying device

Abstract

The utility model relates to the field of BOPP film drying, and discloses a BOPP film drying device which comprises a drying bin, a containing space is arranged in the drying bin, a first electric heating tube and a second electric heating tube are sequentially arranged in the containing space from top to bottom, a plurality of flow guide fans are arranged between the first electric heating tube and the second electric heating tube side by side, and the flow guide fans are connected with the first electric heating tube and the second electric heating tube. A plurality of flow guide fans are arranged between the first electric heating pipe and the second electric heating pipe, the air outlet directions of every two adjacent flow guide fans are opposite, the first opening is located above the first electric heating pipe, and the second opening is located below the second electric heating pipe. And the air outlet directions of the adjacent fans are opposite to be matched with the specific shape of the accommodating space, so that an up-and-down circulating airflow channel is formed in the accommodating space. According to the design, heat energy between the two electric heating pipes can be effectively utilized, and the drying efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of BOPP film drying, and in particular to a BOPP film drying device. Background Technology

[0002] The principle of BOP film drying mainly relies on hot air convection or infrared radiation heating to evaporate the moisture or solvent on the film surface.

[0003] The prior art (authorized publication number CN207831870U) discloses a BOPP film surface drying device, which mainly uses a temperature controller to control the first heating wire and the second heating wire to achieve electric heating, thereby drying the BOPP film. However, since there is a space between the first heating wire and the second heating wire, after the surface temperature of the heating wire rises, it will emit heat energy in the form of infrared radiation. The BOPP film will only be close to one side of the first heating wire or the second heating wire. Obviously, the existing device lacks the ability to utilize the heat energy generated between the first heating wire and the second heating wire, and cannot efficiently utilize the heat energy. Utility Model Content

[0004] The purpose of this invention is to provide a BOPP film drying device to solve the problem that in existing drying devices, during the drying process of transporting BOPP film, the BOPP film only approaches one side of the first or second heating wire, lacking utilization of the heat energy generated between the first and second heating wires, thus failing to efficiently utilize heat energy. The specific technical solution is as follows:

[0005] A BOPP film drying device includes a drying chamber with an internal accommodating space. A first heating element and a second heating element are arranged sequentially from top to bottom within the accommodating space. Several parallel-arranged airflow guide fans are positioned between the first and second heating elements, with adjacent fans having opposite airflow directions. The inner walls of the accommodating space form a rounded rectangular shape. The drying chamber has opposing first and second end faces. A first through-hole is located at the top of both the first and second end faces, and a second through-hole is located at the bottom of both end faces. The first opening is positioned above the first heating element, and the second opening is positioned below the second heating element.

[0006] As an improvement to the above technical solution, it also includes an unwinding mechanism and a winding mechanism, wherein the unwinding mechanism is located in front of the first opening and the winding mechanism is located in front of the second opening.

[0007] As an improvement to the above technical solution, a bracket is connected within the accommodating space, and the first heating element, the second heating element, and the airflow fan are respectively connected to the bracket.

[0008] As an improvement to the above technical solution, the drying chamber is equipped with a temperature controller, and the first heating element, the second heating element, and the guide fan are electrically connected to the temperature controller.

[0009] As an improvement to the above technical solution, it also includes a first traction roller and a second traction roller. The unwinding mechanism and the first traction roller are disposed at opposite ends of the drying chamber, and the unwinding mechanism and the first traction roller are respectively opposite to the first opening of the first end face and the second end face. The winding mechanism and the second traction roller are disposed at opposite ends of the drying chamber, and the winding mechanism and the second traction roller are respectively opposite to the second opening of the first end face and the second end face.

[0010] As an improvement to the above technical solution, both the first opening and the second opening are flat.

[0011] As an improvement to the above technical solution, a first slider and a second slider that slide in cooperation with the first opening are inserted into the first opening, and a third slider and a fourth slider that slide in cooperation with the second opening are inserted into the second opening.

[0012] The beneficial effects of this invention are as follows: This device, by setting several air-guiding fans between the first and second heating elements and aligning the airflow directions of adjacent fans with the specific shape of the accommodating space, forms an upward and downward circulating airflow channel within the accommodating space. This design effectively utilizes the heat energy between the two heating elements, improving drying efficiency.

[0013] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Of course, implementing any product or method of this application does not necessarily require achieving all of the advantages described above at the same time. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of 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 only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the structure of the accommodating space of this utility model.

[0017] Figure 3 This is a schematic diagram of the first opening of this utility model.

[0018] Figure 4 This is a schematic diagram of the temperature controller of this utility model.

[0019] In the diagram: 1. Drying chamber; 2. First heating element; 3. Second heating element; 4. Guide fan; 5. Unwinding mechanism; 6. Winding mechanism; 7. First traction roller; 8. Second traction roller; 9. Temperature controller; 11. Accommodation space; 12. First opening; 13. Second opening; 111. Support; 121. First slider; 122. Second slider. Detailed Implementation

[0020] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and 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.

[0021] Currently used drying devices typically employ parallel-arranged heating elements, with the BOPP film being heated sequentially by bending along a path to approach each element. However, in this structure, the heat energy between two heating elements cannot be effectively utilized, resulting in high energy consumption and low drying efficiency. Therefore, it is necessary to provide an improved drying device to enhance heat utilization efficiency and drying effect.

[0022] Please see Figures 1-4 In this embodiment of the invention, a BOPP film drying device includes a drying chamber 1. The drying chamber 1 has an internal accommodating space 11. From top to bottom, the accommodating space 11 is provided with a first heating element 2 and a second heating element 3. Several parallel-arranged airflow guide fans 4 are arranged between the first heating element 2 and the second heating element 3. The airflow directions of adjacent airflow guide fans 4 are opposite. The inner wall of the accommodating space 11 forms a rounded rectangular shape to improve airflow flow and uniformity. Specifically, this invention, by arranging several airflow guide fans 4 between the first heating element 2 and the second heating element 3, and ensuring that the airflow directions of adjacent fans are opposite, combined with the specific shape of the accommodating space 11, forms an upward and downward circulating airflow channel within the accommodating space 11. This design effectively utilizes the heat energy between the two heating elements, improving drying efficiency.

[0023] The drying chamber 1 has a first end face and a second end face that are opposite each other. The top of the first end face and the second end face have a through opening 12, and the bottom of the first end face and the second end face have a through opening 13. The first opening 12 is located above the first heating tube 2, and the second opening 13 is located below the second heating tube 3. The unwinding mechanism 5 is located in front of the first opening 12, and the winding mechanism 6 is located in front of the second opening 13. The unwinding mechanism 5 is located in front of the first opening 12 to provide continuous input of BOPP film; the winding mechanism 6 is located in front of the second opening 13 to collect the dried BOPP film.

[0024] In some embodiments, a bracket 111 is connected inside the accommodating space 11. The first heating element 2, the second heating element 3, and the guide fan 4 are respectively connected to the bracket 111. The structural design of the bracket 111 ensures the stability of the first heating element 2, the second heating element 3, and the guide fan 4, and ensures the stability and reliability of the device during operation.

[0025] Preferably, the drying chamber 1 is equipped with a temperature controller 9. The first electric heating tube 2, the second electric heating tube 3, and the guide fan 4 are electrically connected to the temperature controller 9. By setting the temperature controller 9 to be electrically connected to the electric heating tube and the guide fan 4, real-time monitoring and precise adjustment of temperature can be achieved, thereby ensuring the stability and safety of the drying process. The specific operating principle is that the guide fan 4 is started simultaneously when the first electric heating tube 2 or the second electric heating tube 3 is started, or the guide fan 4 is started after the first electric heating tube 2 or the second electric heating tube 3 has been started for a certain period of time.

[0026] To ensure more efficient use of space, this utility model also includes a first traction roller 7 and a second traction roller 8. The unwinding mechanism 5 and the first traction roller 7 are located at opposite ends of the drying chamber 1, and the unwinding mechanism 5 and the first traction roller 7 correspond to the first opening 12 of the first end face and the second end face, respectively. The winding mechanism 6 and the second traction roller 8 are located at opposite ends of the drying chamber 1, and the winding mechanism 6 and the second traction roller 8 correspond to the second opening 13 of the first end face and the second end face, respectively. That is, the unwinding mechanism 5 releases the BOPP film, the BOPP film enters the drying chamber 1, passes over the first heating tube 2, and then leads the BOPP film out of the drying chamber 1. The BOPP film then passes through the first traction roller 7 and the second traction roller 8 in sequence before entering the drying chamber 1 again, passes under the second heating tube 3, and finally returns to the winding mechanism 6.

[0027] To prevent excessive heat loss inside the drying chamber 1, preferably, both the first opening 12 and the second opening 13 are flat. The first opening 12 has a first slider 121 and a second slider 122 that slide in cooperation with it. The second opening 13 has a third slider and a fourth slider that slide in cooperation with it. Specifically, the first slider 121 and the second slider 122 can be relatively close or far apart, and the third slider and the fourth slider can be relatively close or far apart. By changing the distance between the first slider 121 and the second slider 122 and the distance between the third slider and the fourth slider, BOPP films of different widths can be matched, thus avoiding excessive heat loss due to excessively wide openings.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A BOPP film drying apparatus, characterized by, The drying bin is internally provided with a containing space, the containing space is sequentially provided with a first electric heating pipe and a second electric heating pipe from top to bottom, a plurality of parallelly arranged flow guide fans are arranged between the first electric heating pipe and the second electric heating pipe, the air outlet directions of adjacent two flow guide fans are opposite, the inner wall of the containing space is enclosed into a round rectangular shape, the drying bin has opposite first and second end faces, the top of the first and second end faces is provided with a first opening penetrating therethrough, the bottom of the first and second end faces is provided with a second opening penetrating therethrough, the first opening is above the first electric heating pipe, and the second opening is below the second electric heating pipe.

2. A BOPP film drying apparatus as claimed in claim 1, wherein: The drying bin is internally provided with a containing space, the containing space is sequentially provided with a first electric heating pipe and a second electric heating pipe from top to bottom, a plurality of parallelly arranged flow guide fans are arranged between the first electric heating pipe and the second electric heating pipe, the air outlet directions of adjacent two flow guide fans are opposite, the inner wall of the containing space is enclosed into a round rectangular shape, the drying bin has opposite first and second end faces, the top of the first and second end faces is provided with a first opening penetrating therethrough, the bottom of the first and second end faces is provided with a second opening penetrating therethrough, the first opening is above the first electric heating pipe, and the second opening is below the second electric heating pipe.

3. A BOPP film drying device as claimed in claim 1, wherein: The containing space is connected with a support, and the first electric heating pipe, the second electric heating pipe and the flow guide fan are connected with the support.

4. The BOPP film drying apparatus as claimed in claim 1, wherein: The drying bin is provided with a temperature controller, and the first electric heating pipe, the second electric heating pipe and the flow guide fan are electrically connected with the temperature controller.

5. A BOPP film drying apparatus as claimed in claim 2, wherein: The drying bin is internally provided with a containing space, the containing space is sequentially provided with a first electric heating pipe and a second electric heating pipe from top to bottom, a plurality of parallelly arranged flow guide fans are arranged between the first electric heating pipe and the second electric heating pipe, the air outlet directions of adjacent two flow guide fans are opposite, the inner wall of the containing space is enclosed into a round rectangular shape, the drying bin has opposite first and second end faces, the top of the first and second end faces is provided with a first opening penetrating therethrough, the bottom of the first and second end faces is provided with a second opening penetrating therethrough, the first opening is above the first electric heating pipe, and the second opening is below the second electric heating pipe.

6. A BOPP film drying apparatus as claimed in claim 1, wherein: The first opening or the second opening is flat.

7. A BOPP film drying apparatus as claimed in claim 5, wherein: The first opening is inserted with a first sliding block and a second sliding block which are in sliding fit with the first opening, and the second opening is inserted with a third sliding block and a fourth sliding block which are in sliding fit with the second opening.

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