Cast film hot air drying box

Abstract

The utility model discloses a cast film hot air drying box which comprises a plurality of connected drying box bodies, drying channels are arranged in the drying box bodies, the drying channels are communicated with one another, bottom frames are arranged in the drying channels, every two adjacent bottom frames are connected with one another, and the bottom frames are connected with a hot air inlet pipe and a hot air outlet pipe. A first vent hole and a second vent hole which are communicated with a hot air inlet pipe and a hot air outlet pipe are formed in the inner side wall of the bottom frame; the hot air outlet pipe is connected with a main exhaust pipe through a branch pipe; a carrier tape for conveying a blank film is arranged in the drying channel and is attached to the upper surface of the bottom frame; a third vent hole and a fourth vent hole are formed in the inner side faces, located on the two sides of the drying channel, in the drying box body, the drying box body is connected with a circulating air outlet pipe and a circulating air inlet pipe which are communicated with the third vent hole and the fourth vent hole, the circulating air outlet pipe is connected with a branch pipe, the circulating air inlet pipe is connected with a main exhaust pipe and a main exhaust pipe, and the main exhaust pipe is connected with a circulating fan. The drying efficiency and the drying uniformity can be greatly improved, and the drying effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of cast film drying, in particular to a cast film hot air drying box. Background Art

[0002] When a tape casting machine is operating, the mixed slurry flows from a trough onto a carrier belt. The relative motion between the carrier belt and the casting blade forms a green film. The green film, along with the carrier belt, is then fed into a drying oven, where the solvent evaporates, ultimately forming a film with a certain strength and toughness. Existing drying ovens mostly use a straight-through structure with a long internal drying channel. This prevents the hot air from drying the green film evenly and results in significant heat loss. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a cast film hot air drying box, which aims to solve the technical problems in the prior art that the existing drying box is a straight-through structure, the long internal drying channel cannot achieve uniform drying of the blank film, and the heat loss is relatively large.

[0004] The technical solution of the utility model is: a cast film hot air drying oven, comprising a plurality of connected drying oven boxes, each of which is provided with a drying channel, the drying channels are interconnected, a bottom frame is provided in each drying channel, two adjacent bottom frames are connected to each other, a hot air inlet pipe and a hot air outlet pipe are connected to each bottom frame, and a first vent and a second vent are provided on the inner side wall of each bottom frame, which are respectively connected to the hot air inlet pipe and the hot air outlet pipe, and each hot air outlet pipe is connected to the main exhaust pipe through a branch pipe. ; A carrier belt for transporting the blank film is provided in the drying channel, and the carrier belt moves in contact with the upper surface of the bottom frame; a third air vent and a fourth air vent are respectively opened on the inner side surfaces on both sides of the drying channel in each drying box body, and each drying box body is connected to a circulating air outlet pipe and a circulating air inlet pipe respectively connected to the third air vent and the fourth air vent, each circulating air outlet pipe is respectively connected to the corresponding branch pipe, and each circulating air inlet pipe is respectively connected to the main exhaust pipe, and the main exhaust pipe and the main exhaust pipe are respectively connected to the air inlet and air outlet of the circulating fan.

[0005] Furthermore, a main air inlet pipe is provided on one side of the drying box body in the present invention, and each of the hot air inlet pipes passes through the drying box body and is connected to the main air inlet pipe.

[0006] Furthermore, the branch pipe in the present invention is vertically arranged on the other side of the drying box body, and the hot air outlet pipe passes through the drying box body and is connected to the lower end of the branch pipe.

[0007] Furthermore, the third vent hole and the fourth vent hole in the present invention are both located above the blank film and the carrier tape, the circulating air outlet duct is located above the hot air outlet duct and is connected to the lower end of the branch pipe, and the circulating air inlet duct is arranged on the same side as the main air inlet duct.

[0008] Furthermore, in the present invention, an air chamber is provided in the drying box body, which is connected with the third vent hole and the fourth vent hole respectively.

[0009] Furthermore, the circulation fan in the present invention is installed on the top of the drying box body, and the main exhaust pipe and the main exhaust pipe are respectively arranged on both sides of the circulation fan.

[0010] Furthermore, in the present invention, each of the drying box bodies is provided with baffles at both ends of the drying channel, and the baffles are installed at the top of the drying channel above the blank film and the carrier tape.

[0011] Compared with the prior art, the present invention has the following advantages: the hot air drying oven of the present invention is composed of multiple drying oven bodies. While transporting the blank film, the carrier belt also divides the drying channel into two upper and lower spaces. The hot air first enters the lower space to preheat the carrier belt, helping the blank film to heat up quickly, and then the circulating fan is used to extract the hot air and redistribute it into each drying oven body. The circulating hot air can evenly dry the blank film on the carrier belt, greatly improving the drying efficiency and uniformity. The baffle designed on each drying oven body can reduce heat loss during the drying process and ensure the drying effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the present invention (wherein the arrow indicates the direction of hot air inlet);

[0013] Figure 2 This is a three-dimensional diagram of the connection of the drying box body of the utility model (wherein the arrow indicates the direction of hot air inlet);

[0014] Figure 3 This is a front view of the connection of the drying box body described in the utility model;

[0015] Figure 4 For the Figure 3 A three-dimensional sectional view taken along the AA cutting line in the main view (where the arrow indicates the direction of hot air inlet);

[0016] Figure 5 It is a schematic diagram of the specific structure of the bottom frame described in the present utility model.

[0017] Wherein: 1. Drying box body; 2. Drying channel; 3. Bottom frame; 4. Hot air inlet pipe; 5. Hot air outlet pipe; 6. First vent; 7. Main air inlet pipe; 8. Branch pipe; 9. Main exhaust pipe; 10. Fourth vent; 11. Circulating outlet pipe; 12. Circulating air inlet pipe; 13. Main exhaust pipe; 14. Circulating fan; 15. Baffle; a. Carrier tape; b. Blank film. DETAILED DESCRIPTION

[0018] The following is a detailed description of the specific implementation of the present invention with reference to the accompanying drawings.

[0019] Example:

[0020] The following is a specific embodiment of a cast film hot air drying oven according to the present invention. Figure 1 、 Figure 2 , which mainly includes a plurality of connected drying box boxes 1, refer to Figure 4 Each drying box body 1 is provided with a drying channel 2, and the drying channel 2 runs through the drying box body 1 from front to back, and the drying channels 2 are interconnected.

[0021] Each drying channel 2 is provided with a bottom frame 3, which is installed at the bottom of the drying channel 2, and two adjacent bottom frames 3 are connected to each other. Figure 4 、 Figure 5 As shown, the left side of the bottom frame 3 is connected to a hot air inlet duct 4, and the left inner wall of the bottom frame 3 is provided with a first vent 6 that communicates with the hot air inlet duct 4. There are a plurality of first vents 6, which are evenly spaced along the left inner wall of the bottom frame 3. The right side of the bottom frame 3 is connected to a hot air outlet duct 5, and the right inner wall of the bottom frame 3 is provided with a second vent 5 that communicates with the hot air outlet duct 5. There are a plurality of second vents, which are evenly spaced along the right inner wall of the bottom frame 3.

[0022] A main air inlet duct 7 is provided on the left side of the multiple connected drying box bodies 1. The hot air inlet duct 4 of each bottom frame 3 passes through the drying box body 1 and is connected to the main air inlet duct 7. A vertical branch pipe 8 is provided on the right side of each drying box body 1. The hot air outlet duct 5 of the bottom frame 3 passes through the drying box body 1 and is connected to the lower end of the corresponding branch pipe 8.

[0023] A carrier belt a for conveying the blank film b is provided in each interconnected drying channel 2 . The carrier belt a moves in contact with the upper surface of the bottom frame 3 in each drying channel 2 .

[0024] Reference Figure 3 、 Figure 4Each drying box body 1 has a third vent hole on the inner side surface located to the right of the drying channel 2. There are multiple third vent holes, evenly spaced along the length of the drying box body 1. A circulating air outlet duct 11, communicating with the third vent hole, is connected to the right side of each drying box body 1. Circulating air outlet duct 11 is located above the hot air outlet duct 5 and connected to the lower end of the corresponding branch pipe 8.

[0025] Each drying box body 1 has a fourth vent 10 formed on the inner side surface to the left of the drying duct 2. Multiple fourth vents 10 are arranged evenly spaced along the length of the drying box body 1. A circulating air inlet duct 12, communicating with the fourth vent 10, is connected to the left side of each drying box body 1. The circulating air inlet duct 12 is located on the same side as the main air inlet duct 7.

[0026] The third vent hole and the fourth vent hole 10 in each drying box body 1 are both located above the blank film b and the carrier tape a. Each drying box body 1 is provided with an air chamber connected to the third vent hole and the fourth vent hole 10 respectively.

[0027] A circulating fan 14 is mounted on the top of the drying oven housing 1. A main exhaust pipe 9 is located to the right of the circulating fan 14 and is connected to the air inlet of the circulating fan 14. A main exhaust pipe 13 is located to the left of the circulating fan 14 and is connected to the air outlet of the circulating fan 14. Each branch pipe 8 is connected to the main exhaust pipe 9, and each circulating air inlet pipe 12 is connected to the main exhaust pipe 13.

[0028] Reference Figure 1 、 Figure 4 Each drying box body 1 is provided with baffles 15 at both ends of the drying channel 2. The baffles 15 are installed at the top of the drying channel 2 above the blank film b and the carrier tape a.

[0029] The hot air drying oven of this utility model is composed of multiple drying oven chambers 1. A carrier belt a is moved along the upper surface of a bottom frame 3 within each drying channel 2, feeding the blank film b into the drying chamber. The carrier belt a divides the drying channel 2 into two compartments, upper and lower. Hot air is fed from a main air inlet duct 7 into each hot air inlet duct 4. The hot air then flows through a first vent 6 and into the underside of the carrier belt a, preheating the carrier belt a and helping the blank film b to heat up quickly. Then, under the action of the circulating fan 14, the hot air below the carrier a and the air above the carrier a are drawn to the branch pipe 8 through the hot air outlet pipe 5 and the circulating air outlet pipe 11 respectively, and then further enter the main exhaust pipe 9, and then output to each circulating air inlet pipe 12 through the main exhaust pipe 13. The hot air is redistributed to each drying box body 1 for circulation. The circulating hot air flows over the blank film b, which can evenly dry the blank film b. After preheating and drying through multiple drying channels 2, the blank film b can be quickly dried and formed. The baffle 15 designed on each drying box body 1 can also reduce heat loss during the drying process to ensure the drying effect.

[0030] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those familiar with the art to understand the present invention and implement it accordingly. They are not intended to limit the scope of protection of the present invention. Any modifications based on the spirit of the main technical solution of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A cast film hot air drying oven, characterized in that: The invention comprises a plurality of connected drying box bodies (1), each of the drying box bodies (1) is provided with a drying channel (2), the drying channels (2) are interconnected, each of the drying channels (2) is provided with a bottom frame (3), two adjacent bottom frames (3) are interconnected, each bottom frame (3) is connected with a hot air inlet pipe (4) and a hot air outlet pipe (5), the inner side wall of each bottom frame (3) is provided with a first vent (6) and a second vent respectively connected with the hot air inlet pipe (4) and the hot air outlet pipe (5), each hot air outlet pipe (5) is connected to a main exhaust pipe (9) through a branch pipe (8); the drying channel (2) is provided with a blank film transporting (b) ) of the carrier tape (a), the carrier tape (a) is moved in contact with the upper surface of the bottom frame (3); a third vent hole and a fourth vent hole (10) are respectively opened on the inner side surfaces of each drying box body (1) located on both sides of the drying channel (2); each drying box body (1) is connected to a circulating air outlet pipe (11) and a circulating air inlet pipe (12) respectively connected to the third air outlet and the fourth air outlet (10); each circulating air outlet pipe (11) is respectively connected to the corresponding branch pipe (8); each circulating air inlet pipe (12) is respectively connected to the main exhaust pipe (13); the main exhaust pipe (9) and the main exhaust pipe (13) are respectively connected to the air inlet and the air outlet of the circulating fan (14).

2. A cast film hot air drying oven according to claim 1, characterized in that: A main air inlet pipe (7) is provided on one side of the drying box body (1), and each of the hot air inlet pipes (4) passes through the drying box body (1) and is connected to the main air inlet pipe (7).

3. A cast film hot air drying oven according to claim 2, characterized in that: The branch pipe (8) is vertically arranged on the other side of the drying box body (1), and the hot air outlet pipe (5) passes through the drying box body (1) and is connected to the lower end of the branch pipe (8).

4. A cast film hot air drying oven according to claim 3, characterized in that: The third vent hole and the fourth vent hole (10) are both located above the blank film (b) and the carrier tape (a), the circulating air outlet pipe (11) is located above the hot air outlet pipe (5) and connected to the lower end of the branch pipe (8), and the circulating air inlet pipe (12) is arranged on the same side as the main air inlet pipe (7).

5. The cast film hot air drying oven according to claim 4, characterized in that: An air chamber is provided in the drying box body (1) and is communicated with the third vent hole and the fourth vent hole (10) respectively.

6. The cast film hot air drying oven according to claim 1, characterized in that: The circulating fan (14) is installed on the top of the drying box body (1), and the main exhaust pipe (9) and the main exhaust pipe (13) are respectively arranged on both sides of the circulating fan (14).

7. The cast film hot air drying oven according to claim 1, characterized in that: Each drying box body (1) is provided with baffles (15) at both ends of the drying channel (2), and the baffles (15) are installed at the top of the drying channel (2) above the blank film (b) and the carrier tape (a).

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