Drying mechanism for edible film and casting production device

Abstract

The utility model discloses an edible film drying mechanism and a casting production device, the edible film drying mechanism comprises a drying cavity, a conveyor belt used for bearing an edible film, a heating assembly and a fan, the heating assembly and the fan are arranged in the drying cavity, and the heating assembly comprises a first heating unit and a second heating unit which are arranged up and down; the first heating unit and the second heating unit are arranged on the upper side and the lower side of the conveying belt correspondingly, the draught fan is used for adjusting the temperature in the drying cavity so that the upper surface and the lower surface of the edible film on the conveying belt can be heated and dried at the same time, the drying efficiency can be improved, and it is guaranteed that the drying temperature in the drying cavity is kept within a certain production specification range; effective chemical components of the edible film are prevented from being damaged, and meanwhile it can be guaranteed that the water content of the dried edible film is within the production specification range.

Description

Technical Field

[0001] The utility model relates to the field of edible film production, in particular to a drying mechanism for edible films and a casting production device. Background Art

[0002] Edible films, simply referred to as edible membranes, can be prepared by the casting method, such as collagen films.

[0003] In the drying chamber of the existing drying mechanism for edible films, hot air circulation is simply provided above the conveyor belt. However, due to the strong thermosensitivity, high water content, and high latent heat of evaporation of collagen itself, and the setting temperature of the hot air cannot be too high to avoid damaging collagen. Thus, the hot air cannot directly heat the part of the edible film in contact with the conveyor belt, easily resulting in the water content of the dried collagen film still being too high, and an edible film product that cannot be completely dried cannot be obtained. Summary of the Utility Model

[0004] Therefore, to solve the above problems, the utility model provides a drying mechanism for edible films and a casting production device, which can ensure that the water content of the dried edible film is within the production specification range.

[0005] To achieve the above object, the technical solution provided by the utility model is as follows:

[0006] The utility model provides a drying mechanism for edible films, including a drying chamber, a conveyor belt for carrying edible films, and a heating component and a fan arranged in the drying chamber; the heating component includes a first heating unit and a second heating unit arranged up and down, and the first heating unit and the second heating unit are respectively arranged on the upper and lower sides of the conveyor belt; the fan is used to adjust the temperature in the drying chamber.

[0007] Further, both the first heating unit and the second heating unit are infrared heating tubes, and the infrared wave number emitted by the first heating unit is less than the infrared wave number emitted by the second heating unit.

[0008] Further, the drying mechanism includes a temperature sensor for monitoring the real-time temperature in the drying chamber, and the temperature sensor controls the rotation speed of the corresponding fan to adjust the temperature in the drying chamber.

[0009] Further, the drying chamber includes multiple drying zones with different drying temperatures for edible films, and each drying zone is provided with the heating component, the fan, and the temperature sensor.

[0010] Further, the conveyor belt is a heat-conducting steel belt.

[0011] The utility model provides a casting production device for an edible film, which includes the drying mechanism of the above-mentioned edible film and a coating mechanism for casting the edible film into a film; the coating mechanism corresponds to the feeding port of the drying mechanism; the coating mechanism includes a casting blade, and a gap is provided between the casting blade and the conveyor belt.

[0012] Furthermore, a film peeling mechanism for peeling the edible film from the conveyor belt is arranged at the discharge port of the drying mechanism. The film peeling mechanism includes a pressing roller and an air knife assembly. The roller surface of the pressing roller abuts against the conveyor belt to form a pressing arrangement for the edible film on the conveyor belt; the air cutting direction of the air knife assembly corresponds to the connection between the pressing roller and the conveyor belt.

[0013] Furthermore, the air knife assembly is an air knife equipped with a humidifier to humidify the air flow blown out by the air knife.

[0014] Furthermore, a winding mechanism for winding the edible film is arranged at the discharge port of the drying mechanism, and the film peeling mechanism is located between the drying mechanism and the winding mechanism.

[0015] Furthermore, a feeding mechanism is arranged at the feeding port of the coating mechanism. The feeding mechanism is used for homogenizing and emulsifying the raw materials of the edible film to form an edible film slurry.

[0016] Through the technical solution provided by the utility model, the following beneficial effects are achieved:

[0017] By arranging the first heating unit and the second heating unit on the upper and lower sides of the conveyor belt respectively, the first heating unit and the second heating unit can heat the upper and lower sides of the conveyor belt simultaneously, so as to realize the simultaneous heating and drying of the upper and lower surfaces of the edible film on the conveyor belt, improve the drying efficiency, and then adjust the temperature in the drying chamber through the fan to ensure that the drying temperature in the drying chamber is maintained within a certain production specification range, so as to avoid damaging the effective chemical components of the edible film, and at the same time ensure that the water content of the dried edible film is within the production specification range. Description of the Drawings

[0018] Figure 1 Shown is a schematic diagram of the casting production device for the edible film in the embodiment. Detailed Embodiments

[0019] To further illustrate each embodiment, the present utility model provides accompanying drawings. These drawings are part of the disclosure of the present utility model, mainly used to illustrate the embodiments, and can be combined with the relevant descriptions in the specification to explain the operating principle of the embodiments. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementation manners and the advantages of the present utility model. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0020] The present utility model will be further described below in conjunction with the accompanying drawings and specific implementation manners.

[0021] Refer to Figure 1 As shown, this embodiment provides a casting production device for an edible film (hereinafter simply referred to as the casting production device) to realize the production of edible film products through the casting process.

[0022] The casting production device includes a drying mechanism for the edible film. The drying mechanism for the edible film is simply referred to as the drying mechanism 1. The drying mechanism 1 includes a drying chamber 11, a conveyor belt 2 for carrying the edible film 7, and a heating component and a blower 14 arranged in the drying chamber 11. The heating component includes a first heating unit 12 and a second heating unit 13 arranged up and down. The first heating unit 12 and the second heating unit 13 are respectively arranged on the upper and lower sides of the conveyor belt 2, and the blower 14 is used to adjust the temperature in the drying chamber 11.

[0023] In this embodiment, the edible film 7 is a collagen film produced by the casting process. After casting and forming, the edible film 7 adheres to the upper side of the conveyor belt 2. Specifically, the conveyor belt 2 is a heat-conducting steel belt to further ensure that the bottom of the edible film 7 can be quickly heated by heat conduction during drying, and the conveyor belt 2 passes through the drying chamber 11 to realize material transportation. In addition, the upper wall of the drying chamber 11 is usually provided with ventilation holes communicating with the heat and waste discharge pipeline to timely discharge the water vapor in the drying chamber 11 to the outside.

[0024] By arranging the first heating unit 12 and the second heating unit 13 on the upper and lower sides of the conveyor belt 2 respectively, the first heating unit 12 and the second heating unit 13 can heat the upper and lower sides of the conveyor belt 2 simultaneously, so as to realize simultaneous heating and drying of the upper and lower surfaces of the edible film 7 on the conveyor belt 2, improve the drying efficiency, and then adjust the temperature in the drying chamber 11 through the blower 14 to ensure that the drying temperature in the drying chamber 11 is maintained within a certain production specification range, so as to avoid damaging the effective chemical components of the edible film 7, such as avoiding other chemical reactions of the collagen component due to excessive temperature after heating, and at the same time ensuring that the water content of the dried edible film 7 is within the production specification range.

[0025] In another preferred embodiment, both the first heating unit 12 and the second heating unit 13 are a plurality of infrared heating tubes, and the wave number of the infrared rays emitted by the first heating unit 12 is less than that of the infrared rays emitted by the second heating unit 13.

[0026] During specific implementation, the wavelength of the infrared rays emitted by the first heating unit 12 is 8 to 15 μm. Compared with infrared rays of a smaller wavelength, although the radiation energy power of the infrared rays with a larger wavelength emitted by the first heating unit 12 is lower, its penetration ability is relatively stronger, which is more conducive to effectively heating the water in the edible film 7 to accelerate the evaporation and removal of the water in the edible film 7.

[0027] The wavelength of the infrared rays emitted by the second heating unit 13 is 2 to 8 μm. Compared with infrared rays of a larger wavelength, the radiation energy power of the infrared rays with a smaller wavelength emitted by the second heating unit 13 is greater, which can more effectively heat the air on the lower side of the conveyor belt 2 to ensure that the temperature rise in the area on the lower side of the conveyor belt 2 is promptly responded to, and then heat the conveyor belt 2 faster and indirectly heat the bottom of the edible film 7, while forming a shorter heating-up time and effectively ensuring the uniformity and consistency of the overall heating of the edible film 7.

[0028] Further preferably, the drying mechanism 1 further includes a temperature sensor 15 for monitoring the real-time temperature in the drying chamber 11, and the temperature sensor 15 controls the rotation speed of the corresponding blower 14 to adjust the temperature in the drying chamber 11 so as to maintain the temperature in the drying chamber 11 within the production specified range of the edible film 7.

[0029] In this specific embodiment, the drying chamber 11 includes three drying zones with different drying temperatures for the edible film, namely, a first drying zone 111, a second drying zone 112, and a third drying zone 113 in sequence along the conveying direction of the conveyor belt 2. Each drying zone is provided with a heating component, a blower 14, and a temperature sensor 15.

[0030] Through the coordination of the heating component, the blower 14, and the temperature sensor 15 by the total control system of the casting production device, the drying temperature range of the first drying zone 111 is between 40 and 60 °C, the drying temperature range of the second drying zone 112 is between 60 and 100 °C, and the drying temperature range of the third drying zone 113 is between 20 and 40 °C, that is, a segmented drying of low temperature - high temperature - low temperature is formed. In the second drying zone 112 with a higher drying temperature, a combined drying method such as steel belt heating, hot air drying, and infrared drying is used to effectively remove the water in the collagen film coated on the steel belt.

[0031] In another preferred embodiment, the casting production device further includes a coating mechanism 3 for casting and forming an edible film. The coating mechanism 3 corresponds to the feeding port of the drying mechanism 1. The coating mechanism 3 includes a casting blade 31, and the casting blade 31 and the conveyor belt 2 are arranged with a gap therebetween to form a film from the edible film slurry through the casting process.

[0032] More specifically, a feeding mechanism 6 is provided at the feeding port of the coating mechanism 3. The feeding mechanism 6 is used for homogenizing and emulsifying the raw materials of the edible film 7 to form an edible film slurry, and through the feeding mechanism 6, the edible film slurry is conveyed to the feeding port of the coating mechanism 3.

[0033] A film peeling mechanism 4 for peeling the edible film 7 from the conveyor belt 2 is provided at the discharge port of the drying mechanism 1. The film peeling mechanism 4 includes a pressing roller 41 and a wind cutting assembly 42. The roller surface of the pressing roller 41 abuts against the conveyor belt 2 to form a pressing arrangement on the edible film 7 on the conveyor belt 2, so that the edible film 7 on the conveyor belt 2 undergoes a certain deformation after being abutted by the pressing roller 41, and then more air gaps are formed between the edible film 7 and the conveyor belt 2, thereby effectively reducing the adhesion force between the edible film 7 and the conveyor belt 2, facilitating subsequent wind cutting and peeling.

[0034] The wind cutting direction of the wind cutting assembly 42 corresponds to the connection between the pressing roller 41 and the conveyor belt 2, so that the air flow blown out by the wind cutting assembly 42 is aligned with the pressing portion of the edible film 7 to achieve film peeling by a wind knife, that is, the edible film 7 on the conveyor belt 2 is more likely to fall off, facilitating subsequent winding. Compared with the prior art where a scraper is used to peel the film and the steel belt is damaged by the scraper, the wind knife peeling in this embodiment will not damage the steel belt or the edible film 7, and can also achieve continuous film peeling production, further ensuring the production efficiency.

[0035] Further preferably, the wind cutting assembly 42 is a wind knife equipped with a humidifier to humidify the air flow blown out by the wind knife. Through on-site debugging, the air flow blown out by the wind knife is always maintained within the range of relative humidity of 50 to 70%, so as to ensure that the air flow blown out by the wind knife is not too dry, thereby avoiding cracks on the surface of the peeled edible film 7, and further ensuring that the edible film 7 separated from the conveyor belt 2 is not easily broken, facilitating continuous winding.

[0036] In addition, a winding mechanism 5 for winding the edible film 7 is provided at the discharge port of the drying mechanism 1, and the film peeling mechanism 4 is located between the drying mechanism 1 and the winding mechanism 5 to wind the edible film 7 peeled from the conveyor belt 2 onto the winding roller of the winding mechanism 5.

[0037] Although the present utility model has been specifically shown and described in connection with preferred embodiments, those skilled in the art should understand that various changes can be made to the present utility model in form and detail without departing from the spirit and scope of the present utility model defined by the appended claims, and all such changes are within the protection scope of the present utility model.

Claims

1. A drying mechanism for edible film, characterized in that: It comprises a drying chamber, a conveyor belt for carrying edible film, and a heating component and a fan arranged in the drying chamber; The heating assembly comprises a first heating unit and a second heating unit which are arranged in an upper and lower manner, and the first heating unit and the second heating unit are arranged on the upper and lower sides of the conveyor belt respectively; the fan is used to adjust the temperature in the drying chamber.

2. The drying mechanism for edible film according to claim 1, characterized in that: The first heating unit and the second heating unit are both infrared heating tubes, and the infrared wave number emitted by the first heating unit is smaller than the infrared wave number emitted by the second heating unit.

3. The drying mechanism for edible film according to claim 1 or 2, characterized in that: The drying mechanism includes a temperature sensor for monitoring the real-time temperature in the drying chamber. The temperature sensor controls the rotation speed of the corresponding fan to adjust the temperature in the drying chamber.

4. The drying mechanism for edible film according to claim 3, characterized in that: The drying chamber comprises a plurality of drying zones with different edible film drying temperatures, and each drying zone is provided with the heating component, the fan and the temperature sensor.

5. The drying mechanism for edible film according to claim 1 or 2, characterized in that: The conveyor belt is a heat-conducting steel belt.

6. A casting production device for edible film, characterized in that: It comprises a drying mechanism for the edible film according to any one of claims 1 to 5 and a coating mechanism for edible film casting; the coating mechanism corresponds to the feed inlet of the drying mechanism; the coating mechanism comprises a casting scraper, and the casting scraper and the conveyor belt are arranged with a gap.

7. The edible film casting production device according to claim 6, characterized in that: The discharge port of the drying mechanism is provided with a film peeling mechanism for peeling the edible film off the conveyor belt, and the film peeling mechanism includes an extrusion roller and a wind shearing component. The roller surface of the extrusion roller presses against the conveyor belt to form an extrusion setting for the edible film on the conveyor belt; the wind shearing direction of the wind shearing component corresponds to the connection between the extrusion roller and the conveyor belt.

8. The edible film casting production device according to claim 7, characterized in that: The wind shear component is a wind knife equipped with a humidifier to humidify the airflow blown out by the wind knife.

9. The edible film casting production device according to claim 7 or 8, characterized in that: The material outlet of the drying mechanism is provided with a material receiving mechanism for rolling up the edible film, and the film peeling mechanism is located between the drying mechanism and the material receiving mechanism.

10. The edible film casting production device according to any one of claims 6 to 8, characterized in that: The feeding port of the coating mechanism is provided with a feeding mechanism, and the feeding mechanism is used to homogenize and emulsify the raw materials of the edible film to form edible film slurry.

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