Energy-saving drying machine for PET film
By introducing a drying mechanism and an exhaust mechanism into the PET film dryer, the problem of difficult water vapor discharge from under the PET film is solved, the drying effect is improved, and an energy-saving drying process is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU XINNANJIE TECH CO LTD
- Filing Date
- 2025-07-13
- Publication Date
- 2026-05-22
AI Technical Summary
In existing PET film dryers, moisture at the contact point between the bottom of the PET film and the transition platform is difficult to expel during drying, resulting in reduced drying efficiency. Furthermore, the moisture generated remains inside the drying chamber, affecting the drying effect.
An energy-saving dryer for PET film was designed, comprising a drying mechanism and an exhaust mechanism. The drying mechanism blows hot air from above the PET film through a support plate, an arc strip, and a channel to expel water vapor below. The exhaust mechanism quickly discharges water vapor through an exhaust bend and a heat-conducting plate, and uses the heat-conducting plate to preheat the incoming air to save energy.
This improves the drying effect of PET film, prevents moisture from remaining in the drying chamber, and achieves an energy-saving drying process.
Smart Images
Figure CN224266725U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of drying equipment technology, specifically to an energy-saving dryer for PET film. Background Technology
[0002] PET film is a thin film made from polyethylene terephthalate (PET). PET film is lightweight, high-strength, transparent, has good gas barrier properties, and is non-toxic and odorless. It also possesses good durability, robustness, and high toughness, and can withstand both high and low temperature environments. PET film is widely used in various fields. It is commonly used in packaging materials, such as carriers for vacuum metallization. After metallization, it is coated with adhesive and laminated with paper to form so-called metallized cardboard. During the PET film production process, it needs to be dried to remove excess moisture and ensure the quality of the PET film.
[0003] The Chinese utility model patent with authorization announcement number "CN219838088U" is specifically "a PET film strip dryer". When dealing with PET film strips of different thicknesses, the working height of the drying device can be adjusted by raising and lowering an electric telescopic rod, thereby adjusting the drying intensity in a timely manner, greatly reducing the difference in drying effect and minimizing the impact on subsequent processing.
[0004] The above-mentioned device has the following defects:
[0005] When drying PET film, the moisture at the contact point between the PET film and the transition platform below the PET film is difficult to expel due to obstruction, resulting in poor drying effect.
[0006] Without an exhaust system, excessive moisture generated during drying remains inside the drying chamber, affecting the drying effect on the PET film. Utility Model Content
[0007] In view of the above-mentioned shortcomings of the existing technology, the present invention provides an energy-saving PET film dryer, which can effectively solve the problems mentioned in the background art.
[0008] To achieve the above objectives, this utility model provides the following technical solution:
[0009] This utility model provides an energy-saving PET film dryer, comprising:
[0010] A drying box, wherein a support leg is fixedly connected to the bottom of the drying box, two symmetrically distributed material troughs are opened on the outside of the drying box, and two sets of symmetrically distributed traction rollers are provided on the outside of the drying box;
[0011] The drying mechanism includes a box body fixedly connected to the top of the drying chamber, a fan fixedly connected to the top of the box body, a support plate fixedly connected to the inside of the drying chamber, arc-shaped strips evenly distributed fixedly connected to the top of the support plate, a heating box provided inside the drying chamber, and a heating tube fixedly connected to the inside of the heating box.
[0012] The exhaust mechanism includes an exhaust bend fixedly connected to the inside of the drying chamber, and a heat-conducting plate extending into the exhaust bend is provided on the outside of the exhaust bend.
[0013] Preferably, the bottom of the box is fixedly connected to a connecting pipe that communicates with the inside of the box, and the other end of the connecting pipe passes through the top of the drying box and the top of the heating box, and communicates with the inside of the heating box.
[0014] Preferably, a filter cover is fixedly connected to the top of the box, and a filter screen is provided in the middle of the filter cover.
[0015] Preferably, the bottom of the heating box is provided with an air outlet groove, and the air outlet grooves are distributed at equal intervals on the bottom of the heating box.
[0016] Preferably, the top of the support plate has a through slot, and the through slots are densely distributed at equal intervals on the top of the support plate.
[0017] Preferably, the exhaust bend is fixedly connected to a cover at one end near the support plate, and the exhaust bend communicates with the interior of the cover.
[0018] Preferably, the end of the exhaust bend away from the cover extends through the top of the drying oven and the outside of the box, and the heat-conducting plate is disposed inside the box.
[0019] The technical solution provided by this utility model has the following advantages compared with the known prior art:
[0020] 1. This utility model, through the setting of the drying mechanism, can blow heated air from above the PET film surface when drying the PET film. Through the setting of the support plate, arc strip and through groove, the water vapor under the PET film can also be discharged under the action of hot air, thus ensuring the drying effect of the PET film.
[0021] 2. By setting up an exhaust mechanism, the water vapor generated during the drying of PET film can be quickly discharged outside the drying chamber by the action of the cover and the exhaust bend, avoiding excessive water vapor remaining inside the drying chamber and further improving the drying effect of PET film.
[0022] 3. By setting up an exhaust mechanism and a drying mechanism, when water vapor is discharged through the exhaust bend, the heat carried in the water vapor is conducted through the heat conduction plate to preheat the air entering the box, thereby utilizing the heat generated during the drying of the PET film and achieving the purpose of energy saving. Attached Figure Description
[0023] 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.
[0024] Figure 1 This is a schematic diagram of the overall structure of the dryer of this utility model;
[0025] Figure 2 This is a schematic cross-sectional view of the drying oven of this utility model.
[0026] Figure 3 This is a schematic diagram of the support plate structure of this utility model;
[0027] Figure 4 This is a partial structural diagram of the box body of this utility model;
[0028] Figure 5 This is a partial cross-sectional view of the box body of this utility model.
[0029] The labels in the diagram represent:
[0030] 1. Drying oven; 2. Support legs; 3. Traction rollers; 4. Exhaust mechanism; 401. Exhaust bend; 402. Cover; 403. Heat-conducting plate; 5. Drying mechanism; 501. Support plate; 502. Box body; 503. Filter screen; 504. Filter cover; 505. Through groove; 506. Arc strip; 507. Heating box; 508. Air outlet slot; 509. Connecting pipe; 510. Fan; 511. Heating tube; 6. Material trough. Detailed Implementation
[0031] 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, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0032] The present invention will be further described below with reference to the embodiments.
[0033] Example 1:
[0034] Reference Figure 1-5 The first embodiment of this utility model discloses an energy-saving PET film dryer, comprising:
[0035] Drying box 1, with support legs 2 fixedly connected to the bottom of drying box 1, two symmetrically distributed material troughs 6 on the outside of drying box 1, and two sets of symmetrically distributed traction rollers 3 on the outside of drying box 1.
[0036] The feed trough 6 is used for feeding and discharging PET film during the drying process;
[0037] The traction roller 3 is used to pull the PET film during feeding or discharging, so that it can move at a uniform speed and work with the drying mechanism 5 to dry it.
[0038] The drying mechanism 5 includes a box body 502 fixedly connected to the top of the drying chamber 1, a fan 510 fixedly connected to the top of the box body 502, a support plate 501 fixedly connected to the inside of the drying chamber 1, arc-shaped strips 506 evenly distributed fixedly connected to the top of the support plate 501, a heating box 507 provided inside the drying chamber 1, and a heating tube 511 fixedly connected to the inside of the heating box 507.
[0039] The support plate 501 is used to support the PET film from the bottom during the drying process to prevent it from deforming and to ensure product quality.
[0040] Specifically, a connecting pipe 509 is fixedly connected to the bottom of the box 502 and communicates with the inside of the box 502. The other end of the connecting pipe 509 passes through the top of the drying oven 1 and the top of the heating box 507 and communicates with the inside of the heating box 507.
[0041] The connecting pipe 509 is used to connect the box 502 and the heating box 507, so that when the fan 510 is working, it can drive the outside air into the box 502, then into the connecting pipe 509, and finally into the heating box 507 to be heated.
[0042] Specifically, a filter cover 504 is fixedly connected to the top of the box 502, and a filter screen 503 is provided in the middle of the filter cover 504.
[0043] The filter cover 504 protects the fan 510 outside the box 502, and the filter screen 503 filters the air entering the box 502 to prevent impurities in the air from adsorbing onto the PET film during the drying process and affecting the quality of the PET film.
[0044] Specifically, the bottom of the heating box 507 has an air outlet slot 508, which is distributed at equal intervals on the bottom of the heating box 507.
[0045] The air outlet 508 is used to exhaust the heated air from the heating box 507 onto the PET film, heating and drying it to remove moisture and improve its performance.
[0046] Specifically, the top of the support plate 501 has a through slot 505, which is densely distributed at equal intervals on the top of the support plate 501.
[0047] The through groove 505 is used to allow moisture between the support plate 501 and the PET film to be discharged smoothly when the PET film is heated. Under the action of the arc strip 506, the PET film is prevented from directly contacting the support plate 501, thus improving the drying effect.
[0048] Example 2:
[0049] Reference Figure 1-5 This is the second embodiment of the present invention, which differs from the first embodiment in that:
[0050] The exhaust mechanism 4 includes an exhaust bend 401 fixedly connected to the inside of the drying chamber 1, and a heat-conducting plate 403 extending into the exhaust bend 401 is provided on the outside of the exhaust bend 401.
[0051] The exhaust bend 401 is used to discharge the water vapor generated during the drying of the PET film in the drying chamber 1, so as to avoid excessive water vapor remaining inside the drying chamber 1 and ensure the drying effect of the PET film.
[0052] The heat-conducting plate 403 is used to collect the heat carried in the discharged water vapor and transfer it to the box 502 to preheat the air entering the box 502, thereby reducing the energy consumption when the heating tube 511 heats the air and achieving the purpose of energy saving.
[0053] Specifically, the exhaust bend 401 is fixedly connected to the cover 402 at one end near the support plate 501, and the exhaust bend 401 communicates with the interior of the cover 402.
[0054] The cover 402 is used to facilitate the collection of water vapor generated during the drying of PET film. When hot air blows towards the PET film from above, the hot air carries water vapor to the surroundings under the obstruction of the PET film and enters the cover 402, and is discharged through the cover 402 and the exhaust bend 401.
[0055] Specifically, the end of the exhaust bend 401 away from the cover 402 passes through the top of the drying oven 1 and the outside of the box 502, and the heat conduction plate 403 is set inside the box 502.
[0056] The exhaust bend 401 extends into the box 502 and then out of the box 502, which facilitates the use of heat through the heat conduction plate 403. At the same time, the water vapor it carries will not enter the box 502, ensuring that the air entering the box 502 is dry.
[0057] The remaining structure is the same as that in Example 1.
[0058] The workflow of this utility model is as follows:
[0059] The PET film that needs to be dried enters the drying chamber 1 under the action of two traction rollers 3 and the feed trough 6, and is discharged from the feed trough 6 on the other side.
[0060] When drying the PET film, the fan 510 and the heating tube 511 work. The fan 510 drives the air filtered by the filter screen 503 into the box 502, and then into the heating box 507 through the connecting pipe 509. The heating tube 511 heats the air in the heating box 507. The heated air is discharged through the air outlet 508 and blows evenly onto the PET film below to remove the moisture carried in the PET film.
[0061] The removed moisture forms water vapor under the action of hot air. The water vapor, along with the hot air, enters the exhaust bend 401 through the cover 402 and is discharged to the outside of the drying chamber 1 through the exhaust bend 401.
[0062] When hot air carrying water vapor flows in the exhaust bend 401, it heats the heat-conducting plate 403. The heat-conducting plate 403 transfers heat to the box 502 to preheat the air entering the box 502 and recover the heat generated during drying.
[0063] After drying, the PET film is discharged from the drying chamber 1 by the action of the traction roller 3, thus completing the drying of the PET film.
[0064] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.
Claims
1. An energy-saving dryer for PET film, characterized in that, include: Drying box (1), the bottom of the drying box (1) is fixedly connected with a support leg (2), two symmetrically distributed material troughs (6) are opened on the outside of the drying box (1), and two sets of symmetrically distributed traction rollers (3) are provided on the outside of the drying box (1). The drying mechanism (5) includes a box body (502) fixedly connected to the top of the drying box (1), a fan (510) fixedly connected to the top of the box body (502), a support plate (501) fixedly connected to the inside of the drying box (1), an arc-shaped strip (506) evenly distributed fixedly connected to the top of the support plate (501), a heating box (507) provided inside the drying box (1), and a heating tube (511) fixedly connected to the inside of the heating box (507). The exhaust mechanism (4) includes an exhaust bend (401) fixedly connected to the inside of the drying box (1), and a heat-conducting plate (403) extending into the exhaust bend (401) is provided on the outside of the exhaust bend (401).
2. The energy-saving PET film dryer according to claim 1, characterized in that, The bottom of the box body (502) is fixedly connected to a connecting pipe (509) that communicates with the inside of the box body (502). The other end of the connecting pipe (509) passes through the top of the drying oven (1) and the top of the heating box (507) and communicates with the inside of the heating box (507).
3. The energy-saving PET film dryer according to claim 1, characterized in that, A filter cover (504) is fixedly connected to the top of the box (502), and a filter screen (503) is provided in the middle of the filter cover (504).
4. The energy-saving PET film dryer according to claim 1, characterized in that, The bottom of the heating box (507) is provided with an air outlet groove (508), and the air outlet groove (508) is distributed at equal intervals on the bottom of the heating box (507).
5. The energy-saving PET film dryer according to claim 1, characterized in that, The top of the support plate (501) is provided with a through groove (505), and the through groove (505) is densely distributed at equal intervals on the top of the support plate (501).
6. The energy-saving PET film dryer according to claim 1, characterized in that, The exhaust bend (401) is fixedly connected to a cover (402) at one end near the support plate (501), and the exhaust bend (401) communicates with the inside of the cover (402).
7. The energy-saving PET film dryer according to claim 6, characterized in that, The exhaust bend (401) is located away from the cover (402) and extends through the top of the drying oven (1) and the outside of the box (502). The heat-conducting plate (403) is located inside the box (502).