Water-soluble film steel belt casting machine

Abstract

The utility model discloses a water-soluble film steel belt casting machine which comprises a plurality of sections of drying ovens for drying film-making liquid, namely a first section of drying oven, a second section of drying oven, a third section of drying oven and a steel belt for conveying the film-making liquid, an upper-layer steam pipe for providing a high-temperature heat source and a lower-layer steam pipe for providing a low-temperature heat source are arranged in each section of drying oven; the two sides of the first-section drying oven and the two sides of the second-section drying oven are provided with first draught fans used for pumping hot air on the lower layer to the upper layer and conducting transverse circulation, and the tops of the first-section drying oven and the second-section drying oven are provided with second draught fans used for pumping moisture in the drying ovens out of the drying ovens. A third fan for pumping lower-layer hot air to the top of the third-section drying oven is arranged on one side of the third-section drying oven, and a fourth fan for longitudinally circulating the hot air in the third-section drying oven is arranged on one side, far away from the second-section drying oven, of the third-section drying oven. According to the utility model, the three drying ovens are used for gradually drying, heating, quickly dehumidifying and drying film-making liquid, so that the film-making quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a film production equipment technical field, concretely relates to a water-soluble film steel belt casting machine. BACKGROUND

[0002] The water-soluble film steel belt casting machine is a special equipment for producing water-soluble film (such as PVA film), and its core process is to realize solution flow casting molding by taking steel belt as a continuous transmission carrier.

[0003] The existing water-soluble film steel belt casting machine has the defects of poor drying effect and ineffective dehumidification, resulting in low quality of film production, high energy consumption and other defects. UTILITY MODEL CONTENTS

[0004] In view of the above technical deficiencies, the utility model aims at providing a water-soluble film steel belt casting machine to solve the defects of poor drying effect and ineffective dehumidification of the existing water-soluble film steel belt casting machine, resulting in low quality of film production, high energy consumption and other defects.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme: the utility model provides a water-soluble film steel belt casting machine, which comprises multiple drying ovens for drying film production liquid: first drying oven, second drying oven, third drying oven and steel belt for conveying film production liquid, each drying oven is provided with upper steam pipe for providing high-temperature heat source and lower steam pipe for providing low-temperature heat source, the two sides of the first drying oven and the second drying oven are provided with first fan for pumping lower hot air to the upper layer and performing horizontal circulation, the top of the first drying oven and the second drying oven is provided with second fan for pumping the moisture in the drying oven out of the oven, one side of the third drying oven is provided with third fan for pumping lower hot air to the top of the third drying oven, and the side of the third drying oven away from the second drying oven is provided with fourth fan for making the hot air in the third drying oven circulate longitudinally.

[0006] Preferably, the upper steam pipe is three layers.

[0007] Preferably, the outside of each drying oven is provided with an outer sealing plate, and the outer sealing plate is a heat preservation plate.

[0008] Preferably, the top of each drying oven is provided with a heat preservation cover plate.

[0009] Preferably, the side of each drying oven is provided with an inspection port.

[0010] Preferably, the drying oven is provided with an adjusting mechanism for adjusting the tightness of the steel belt, and the adjusting mechanism comprises a top screw rod and a dovetail groove, the top screw rod and the dovetail groove cooperate with each other, and the tightness of the steel belt is adjusted by twisting the top screw rod.

[0011] Preferably, the drying oven is provided with a rubber roller for supporting the steel belt.

[0012] Preferably, the steel belt is provided with a die head for spraying the film forming liquid.

[0013] The beneficial effects of the utility model lie in: the utility model realizes rapid dehumidification and efficient drying of the film forming liquid through upper high-temperature heating and lower low-temperature heating of the first and second sections of ovens, transverse circulation of hot air at two sides and rapid discharge of moisture in the oven at the top.

[0014] The utility model discloses through third section oven upper high-temperature heating, lower low-temperature heating and hot air horizontal and vertical double circulation, realize rapid dehumidification and efficient drying under the action of hot air double circulation, thereby provide the quality of the film made. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without paying creative labor.

[0016] Figure 1 It is the whole structure schematic diagram of the utility model.

[0017] Figure 2 It is the sectional view structure schematic diagram of the utility model. Figure 1

[0018] Figure 3 It is the sectional view structure schematic diagram of the utility model. Figure 1

[0019] Figure 4 It is the side fan air draft flow direction schematic diagram of the first section oven and the second section oven.

[0020] Figure 5 It is the top fan air draft flow direction schematic diagram of the first section oven and the second section oven.

[0021] Figure 6 It is the side fan air draft flow direction schematic diagram of the third section oven.

[0022] Figure 7 It is the schematic diagram of the other side of the whole structure of the utility model.

[0023] ​​Explanation of reference numerals in the attached drawings: 1. First drying oven section; 2. Second drying oven section; 3. Third drying oven section; 4. Steel belt; 5. First layer steam pipe; 6. Lower layer steam pipe; 7. First fan; 8. Second fan; 9. Third fan; 10. Fourth fan; 11. Outer sealing plate; 12. Insulation cover plate; 13. Inspection port; 14. Top screw; 15. Dovetail groove; 16. Rubber roller; 17. Die head. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example:

[0026] like Figures 1-7 As shown, this utility model provides a water-soluble film casting machine using a steel belt, comprising multiple drying ovens for drying film-forming liquids: a first drying oven 1, a second drying oven 2, a third drying oven 3, and a steel belt 4 for conveying the film-forming liquid.

[0027] In this embodiment, each oven section is equipped with an upper steam pipe 5 that provides a high-temperature heat source and a lower steam pipe 6 that provides a low-temperature heat source. Correspondingly, each oven section has an air inlet on one side and an air outlet on the opposite side. The oven can be supplied with steam by an external steam boiler or other equipment, which enters the steam pipe through the air inlet and is discharged through the air outlet. The steam boiler is existing technology and will not be described in detail here. The upper steam pipe 5 and the lower steam pipe 6 of each oven section are connected by connecting pipes.

[0028] The upper steam pipe 5 is used to provide a heat source of 140 degrees Celsius to the film-forming liquid to dry the film-forming liquid into a film. In this embodiment, the upper steam pipe 5 has three layers. The lower steam pipe 6 is used to provide a heat source of 80-100 degrees Celsius to the film to dry the film.

[0029] In this embodiment, the first drying oven 1 and the second drying oven 2 are equipped with a first fan 7 on both sides to draw hot air from the lower layer to the upper layer and circulate it horizontally to speed up the drying process.

[0030] The top of the first drying oven 1 and the second drying oven 2 are equipped with a second fan 8 to draw the moisture inside the oven to the outside, thereby achieving rapid dehumidification;

[0031] A third fan 9 is installed on one side of the third oven 3 to draw the lower layer of hot air to the top of the third oven 3, so that the hot air is directly facing the steel belt 4 and blown vertically onto the surface of the film to carry out horizontal hot air circulation in order to speed up drying.

[0032] And the third section oven 3 is away from the second section oven 2 side is provided with the fourth fan 10 that makes the hot air in the third section oven 3 longitudinal circulation.

[0033] The film-forming liquid is in liquid state in the first section oven 1 and the second section oven 2, and is dried into a film in the third section oven 3.

[0034] In the embodiment, the material of the steel belt 4 is 304, 316 or other mirror stainless steel, and the steel belt 4 runs clockwise and stably. The running mode of the steel belt 4 is the prior art, for example, a driving roller is sleeved on the steel belt 4, and a motor provides power to pull the steel belt 4 to move at a constant speed.

[0035] In the embodiment, the plurality of fans are all provided with rotating power by motors, and the plurality of fans are different in size and motor power for rotating. Among them, the first fan 7 and the second fan 8 adopt KL-750 motors, the third fan 9 adopts a 1100W, 380V motor, and the fourth fan 10 adopts a 4KW variable frequency motor.

[0036] In the embodiment, the outer side of each section oven is provided with an outer sealing plate 11, which can be welded with the oven as a whole. The outer sealing plate 11 is used for dust prevention and protection of the interior of the whole equipment. The outer sealing plate 11 is a heat preservation plate, which is heat-insulated by using aluminum silicate, rock wool purification heat preservation plate, etc. Even if the internal temperature of the oven is as high as 140 degrees Celsius, the temperature on the surface is only 30-40 degrees Celsius.

[0037] In the embodiment, the top of each section oven is provided with a heat preservation cover plate 12, which can be lifted by a handle at any time to play the role of protection, sealing, heat preservation and heat insulation. The material of the heat preservation cover plate 12 is the same as that of the outer sealing plate 11.

[0038] In the embodiment, the side of each section oven is provided with an inspection hole 13 for daily maintenance and repair of the equipment and internal dust removal of the oven.

[0039] In the embodiment, the steel belt deviation alarm mechanism can be provided on each section oven. The steel belt deviation causes the travel switch contact to move a certain distance to trigger the alarm. The core of the steel belt deviation alarm mechanism is to detect and trigger the alarm through the following mechanical and electrical linkage: steel belt edge → contact detection rod → connecting rod / lever → travel switch → PLC / alarm circuit. After the deviation is corrected, the detection rod can be pulled back to the original position by the spring to reset the travel switch. The steel belt deviation alarm mechanism is the prior art, and will not be described in detail here.

[0040] In the embodiment, the oven is provided with an adjusting mechanism for adjusting the tightness of the steel belt 4. The adjusting mechanism includes a top screw rod 14 and a dovetail groove 15. The top screw rod 14 cooperates with the dovetail groove 15 to adjust the tightness of the steel belt 4 by twisting the top screw rod 14, and also can correct the deviation of the steel belt.

[0041] In this embodiment, each section of the oven is provided with a rubber roller 16 supporting the steel belt.

[0042] In this embodiment, the steel belt 4 is provided with a die head 17 for spraying the film-forming liquid, and the film-forming thickness is adjusted to 30-100 μm through the die head 17.

[0043] Working principle:

[0044] Adjust the film-forming thickness of the die head 17, spray the film-forming liquid, and adjust the uniformity of the film thickness to cover the upper surface of the steel belt 4;

[0045] The steel belt 4 rotates clockwise, smoothly bringing the film-forming liquid to the upper layer of the first section of the oven 1, which is dried under the heating of the upper three layers of steam pipes 5;

[0046] At the same time, the left and right fans draw the low-temperature hot air from the lower layer into the upper layer air duct, enabling the hot air in the first section of the oven 1 to independently circulate and accelerate the drying of the film-forming liquid;

[0047] At the same time, the fan at the top of the first section of the oven 1 can exhaust the moisture in the oven to the outside of the oven, and also promote the circulation of the hot air in the oven, accelerating the evaporation of the moisture in the film-forming liquid;

[0048] The steel belt 4 continues to rotate clockwise, smoothly bringing the film-forming liquid to the upper layer of the second section of the oven 2, which is continuously dried under the heating of the upper three layers of steam pipes 5;

[0049] At the same time, the left and right fans draw the low-temperature hot air from the lower layer into the upper layer air duct, enabling the hot air in the second section of the oven 2 to independently circulate and accelerate the drying of the film-forming liquid;

[0050] At the same time, the fan at the top of the second section of the oven 2 can exhaust the moisture in the oven to the outside of the oven, and also promote the circulation of the hot air in the oven, accelerating the evaporation of the moisture in the film-forming liquid;

[0051] The steel belt 4 continues to rotate clockwise, smoothly bringing the film-forming liquid to the upper layer of the third section of the oven 3, which is continuously dried under the heating of the upper three layers of steam pipes 5;

[0052] At the same time, one of the fans on the side draws the low-temperature hot air from the lower layer to the top of the oven, and the hot air is directly blown vertically onto the surface of the film, enabling the hot air in the third section of the oven to circulate horizontally and vertically, and the hot air in the third section of the oven to circulate horizontally and vertically, accelerating the drying and forming the film-forming liquid into a film on the upper layer of the third section of the oven 3; Figure 6

[0053] The steel belt 4 continues to rotate clockwise and enters the lower layer of the third section of the oven 3 for low-temperature drying;

[0054] ​The steel belt 4 continues to rotate clockwise, and enters the lower layer of the second section box 2 to continue low-temperature drying;

[0055] The steel belt 4 continues to rotate clockwise, and enters the lower layer of the first section box 1 to only perform 2394mm low-temperature drying, and then the film is naturally cooled;

[0056] Finally, the film is peeled off from the steel belt 4.

[0057] Obviously, various modifications and changes can be made to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and changes fall within the scope of the present application claims and their equivalents, it is intended to include such modifications and changes in the present application.

Claims

1. An aqueous film forming steel belt caster characterized by, The invention discloses a drying oven for drying and film-forming liquid, which comprises a plurality of drying sections, a steel belt (4) for conveying the film-forming liquid, an upper steam pipe (5) for providing high-temperature heat source and a lower steam pipe (6) for providing low-temperature heat source arranged in each drying section, a first fan (7) arranged on both sides of the first drying section (1) and the second drying section (2) for pumping the lower hot air to the upper layer and performing horizontal circulation, a second fan (8) arranged on the top of the first drying section (1) and the second drying section (2) for pumping the moisture in the drying oven to the outside, a third fan (9) arranged on one side of the third drying section (3) for pumping the lower hot air to the top of the third drying section (3), and a fourth fan (10) arranged on the side of the third drying section (3) away from the second drying section (2) for performing vertical circulation of the hot air in the third drying section (3).

2. A water-soluble film strip casting machine as claimed in claim 1, characterized in that The upper steam pipe (5) is three-layered.

3. A water film steel belt caster as claimed in claim 1 wherein, An outer sealing plate (11) is arranged on the outer side of each drying section, and the outer sealing plate (11) is a heat-insulating plate.

4. A water film steel belt caster as claimed in claim 1 wherein, A heat-insulating cover plate (12) is arranged on the top of each drying section.

5. A water film steel belt caster as claimed in claim 1 wherein, An inspection opening (13) is arranged on the side of each drying section.

6. A water film steel belt caster as claimed in claim 1 wherein, An adjusting mechanism is arranged on the drying oven for adjusting the tightness of the steel belt (4), which comprises a top screw rod (14) and a dovetail groove (15), the top screw rod (14) and the dovetail groove (15) are matched with each other, and the tightness of the steel belt (4) is adjusted by rotating the top screw rod (14).

7. A water film steel belt caster as claimed in claim 1 wherein, A rubber roller (16) is arranged on the drying oven for supporting the steel belt.

8. A water film steel belt caster as claimed in claim 1 wherein, A die (17) for spraying the film-forming liquid is arranged on the steel belt (4).

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