Film drying and dehumidifying device and method

Abstract

The application discloses a film material drying and dehumidifying device and method, wherein the film material drying and dehumidifying device comprises a box body, an oven and a heater. The first air inlet and the first air outlet of the box body are respectively connected with a dehumidifier; the oven is arranged on one side of the box body, a side air duct is arranged on the other side of the box body, a conveying assembly is arranged in the oven and is used for conveying the film material, the second air inlet of the oven is communicated with the inside of the box body and the inside of the oven, and the second air outlet of the oven is communicated with the lower part of the side air duct and the inside of the oven. The heater is arranged in the side air duct, the heater is communicated with the upper part of the side air duct and the lower part of the side air duct, and the heater is used for heating the gas. After the hot air enters the oven from the second air inlet, the film material is preliminarily dried and dehumidified, then the heater is used for heating the hot air, the hot air enters the oven again, and the cycle drying and dehumidifying is carried out, so that the drying and dehumidifying efficiency can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of film material processing equipment, in particular to a film material drying and dehumidifying device and method. BACKGROUND

[0002] The non-heat-sensitive film material has a high initial moisture content (about 91%) and belongs to combined water, which is not easy to evaporate. The film material cannot be extruded and lifted when it is just formed, and can only be attached to a food-grade high-temperature-resistant belt for transmission. The general wet film can withstand 95 DEG C hot air. Film drying is a technical difficulty in the material production process, which directly affects the production efficiency, energy consumption and product quality.

[0003] The current drying process of the wet film generally adopts an "air source heat pump + electric auxiliary heating" mode for drying, which has relatively low energy consumption. However, due to the influence of the fact that the heat pump cannot be continuously operated at high temperature, the drying efficiency is low, the production efficiency is restricted, and it is not conducive to large-scale industrial production. SUMMARY

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application provides a film material drying and dehumidifying device which can quickly dry the film material.

[0005] The present application also provides a film material drying and dehumidifying method.

[0006] The film material drying and dehumidifying device according to the first aspect of the present application comprises:

[0007] A box body, one side of the box body is provided with a first air inlet and a first air outlet, the first air inlet and the first air outlet are connected with a dehumidifier respectively, and the first air inlet and the first air outlet are located at two ends of the box body respectively;

[0008] An oven, the oven is arranged at one side in the box body, the other side in the box body is provided with a side air duct, the oven is internally provided with a conveying assembly, the conveying assembly comprises a conveying belt, the film material is placed on the conveying belt, the conveying belt is used for conveying the film material, the upper end of the oven is provided with a second air inlet, the second air inlet is communicated with the inside of the box body and the inside of the oven, the lower end of the oven is provided with a second air outlet at one side, and the second air outlet is communicated with the lower part of the side air duct and the inside of the oven; and

[0009] A heater, the heater is arranged in the side air duct, the heater is communicated with the upper part of the side air duct and the lower part of the side air duct, and the heater is used for heating the gas.

[0010] According to the film drying and dehumidifying device, the hot air enters the oven through the second air inlet, and the film is preliminarily dried and dehumidified. Then, the hot air enters the side air duct through the second air outlet, is heated by the heater, is circulated above the heater, enters the oven through the second air inlet again, and is dried and dehumidified again. The hot air is circulated repeatedly, and the drying and dehumidifying efficiency is improved. The hot air after drying and dehumidifying can be discharged from the first air outlet on one side of the box body and recycled in the dehumidifier.

[0011] According to some embodiments of the present application, the conveying assembly further comprises a rotating roller arranged on the inner side of the conveying belt, the conveying belt comprising an upper belt and a return belt, two ends of the upper belt being connected with two ends of the return belt respectively, and the rotating roller driving the conveying belt to move.

[0012] According to some embodiments of the present application, the rotating roller is arranged with a plurality of rotating rollers at the upper end and the lower end of the oven, the plurality of rotating rollers being arranged at intervals along the length direction of the oven, and the conveying belt being arranged around the rotating rollers.

[0013] According to some embodiments of the present application, the rotating rollers at the upper end and the lower end are arranged at intervals.

[0014] According to some embodiments of the present application, the first air outlet is arranged on the box body and located above and / or below the heater.

[0015] According to some embodiments of the present application, the first air inlet is arranged on the box body and located above and / or below the heater.

[0016] According to some embodiments of the present application, the upper end of the oven is provided with an internal circulating fan, and the internal circulating fan is in communication with the second air inlet.

[0017] According to the second aspect of the embodiments of the present application, the film drying and dehumidifying method is applied to the film drying and dehumidifying device, and the drying and dehumidifying device comprises:

[0018] The box body is provided with a first air inlet and a first air outlet on one side, the first air inlet and the first air outlet are connected with a dehumidifier respectively, and the first air inlet and the first air outlet are located at two ends of the box body respectively.

[0019] an oven is arranged at one side of the cabinet, the other side of the cabinet is arranged with a side air duct, the oven is internally arranged with a conveying assembly, the conveying assembly comprises a conveying belt, the conveying belt is used for placing a film material, the conveying belt is used for conveying the film material, an upper end of the oven is arranged with a second air inlet, the second air inlet is communicated with the inside of the cabinet and the inside of the oven, a lower end of the oven is arranged with a second air outlet at one side, the second air outlet is communicated with the lower part of the side air duct and the inside of the oven, and a heater is arranged in the side air duct, the heater is communicated with the upper part of the side air duct and the lower part of the side air duct, and the heater is used for heating gas.

[0020] a heater is arranged in the side air duct, the heater is communicated with the upper part of the side air duct and the lower part of the side air duct, and the heater is used for heating gas;

[0021] an internal circulation fan is arranged at the second air inlet, the internal circulation fan is communicated with the inside of the cabinet and the inside of the oven;

[0022] wherein the first air outlet is located above and / or below the heater, and the first air inlet is located above and / or below the heater;

[0023] The film drying and dehumidifying method comprises the following steps:

[0024] Step one: turn on the dehumidifier, the heater and the internal circulation fan, and turn on the conveying assembly, and the drying and dehumidifying device is in a starting state;

[0025] Step two: the dehumidifier enters hot air after dehumidification into the inside of the cabinet through the first air inlet, the heater performs secondary heating on the hot air, the internal circulation fan discharges the hot air in the inside of the cabinet into the inside of the oven, and the hot air performs drying and dehumidifying on the film on the conveying assembly;

[0026] Step three: the hot air is discharged from the second air outlet to the lower part of the side air duct, the heater performs cyclic heating on the hot air after dehumidification and drying, and the hot air is discharged back into the oven or the dehumidifier from the first air outlet, and the hot air is cyclically utilized.

[0027] According to the film drying and dehumidifying method, the hot air is preliminarily dried and dehumidified after entering the oven from the second air inlet in step three, and then the hot air is heated by the heater, and the hot air is cyclically heated above the heater, and then the hot air enters the oven through the second air inlet again, and the hot air is cyclically dried and dehumidified, so that the drying and dehumidifying efficiency is improved. The hot air after drying and dehumidifying can be discharged back into the dehumidifier from the first air outlet at one side of the cabinet for recycling.

[0028] According to some embodiments of the present application, when the first air inlet is located above the heater and / or below the heater, the step two comprises:

[0029] The dehumidifier enters the hot air after dehumidification from the first air inlet above and / or below the heater into the cabinet, the heater performs secondary heating on the hot air, and the inner circulating fan transports the hot air after secondary heating into the oven through the second air inlet, and the hot air after secondary heating performs drying and dehumidification on the film material on the conveying assembly.

[0030] According to some embodiments of the present application, when the first air outlet is located above the heater and / or below the heater, the step three comprises:

[0031] The hot air after drying and dehumidification of the film material is discharged from the second air outlet to the lower part of the side air duct, the heater performs circulating heating on the hot air and discharges it into the side air duct above the heater, and the heated hot air is again introduced into the oven from the inner circulating fan or directly transported back into the dehumidifier from the first air outlet above and / or below the heater, for hot air recycling.

[0032] Additional aspects and advantages of the present application will be given, partially in the following description, partially will become obvious from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0033] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description, taken in conjunction with the accompanying drawings, in which:

[0034] Figure 1 The internal schematic diagram of the film drying and dehumidifying device according to the first aspect of the present application;

[0035] Figure 2 The internal schematic diagram of the oven of the film drying and dehumidifying device shown; Figure 1 The internal schematic diagram of the oven of the film drying and dehumidifying device shown;

[0036] Figure 3 The internal schematic diagram of the oven of the film drying and dehumidifying device shown; Figure 2 The schematic diagram of the conveying belt in the oven;

[0037] Figure 4 The flowchart of the film drying and dehumidifying method according to the second aspect of the present application.

[0038] REFERENCE NUMERALS:

[0039] Cabinet 10; first air inlet 11; first air outlet 12; side air duct 13;

[0040] Oven 20; conveyor belt 21; upper belt 211; return belt 212; second air inlet 22; second air outlet 23;

[0041] Heater 30; inner circulating fan 40. DETAILED DESCRIPTION

[0042] Embodiments of the present application are described in detail below with reference to the attached drawings, which show by way of example, embodiments in which the same or similar elements have the same or similar reference numbers. The embodiments described below are examples only, and are not to be construed as limiting the present application.

[0043] In the description of the present application, it is to be understood that, in relation to the orientation description, for example, the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, and is only for the purpose of facilitating the description of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0044] In the description of the present application, the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, more than, etc. are understood as not including the number, above, below, etc. are understood as including the number. If it is described as first, second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of technical features indicated.

[0045] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be broadly understood, and those skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0046] Referring to Figures 1 to 3, according to the first aspect of the present application, the film drying and dehumidifying device, film drying and dehumidifying device includes: box 10, oven 20 and heater 30. Box 10 is provided with a first air inlet 11 and a first air outlet 12 on one side, the first air inlet 11 and the first air outlet 12 are connected with the dehumidifier (not shown in the figure), the first air inlet 11 and the first air outlet 12 are located at both ends of the box 10 respectively; Oven 20 is arranged in one side of the box 10, the other side of the box 10 is provided with a side air duct 13, the oven 20 is internally provided with a conveying assembly, the conveying assembly includes a conveying belt 21, the film is placed on the conveying belt 21, the conveying belt 21 is used for conveying the film, the upper end of the oven 20 is provided with a second air inlet 22, the second air inlet 22 is communicated with the inside of the box 10 and the inside of the oven 20, the lower end of the oven 20 is provided with a second air outlet 23 on one side, the second air outlet 23 is communicated with the lower part of the side air duct 13 and the inside of the oven 20; The heater 30 is arranged in the side air duct 13, the heater 30 is communicated with the upper part of the side air duct 13 and the lower part of the side air duct 13, and the heater 30 is used for heating the gas.

[0047] Specifically, as shown in the figure, the dehumidifier dries and heats the air, and then discharges the hot air from the first air inlet 11 at the upper end of the box 10 into the box 10. The hot air fills the inside of the box 10, and when the hot air reaches the second air inlet 22 above the top of the oven 20, it enters the oven 20 from the second air inlet 22 and passes through the conveying assembly inside the oven 20, and the film is placed on the conveying assembly. The dry hot air can take away part of the moisture on the film, and at the same time heat the film to evaporate the moisture inside, so as to preliminarily dry and dehumidify the film.

[0048] After passing through the film, the hot air is discharged from the second air outlet 23 on the right lower end of the oven 20; the hot air discharged from the second air outlet 23 enters the lower part of the side air duct 13, and the heater 30 in the middle of the side air duct 13 can heat the humid hot air again; after the hot air is heated by the heater 30, the hot air is discharged above the heater 30, i.e. in the upper part of the side air duct 13, and then returns to the upper part of the inside of the box 10. The hot air can pass through the second air inlet 22 together with the fresh hot air from the dehumidifier, enter the oven 20, and dry and dehumidify the film on the conveying assembly, so as to achieve the purpose of drying and dehumidifying the film. Thus, the drying and dehumidifying efficiency can be improved, and the energy consumption can be reduced.

[0049] It should be noted that the hot air after participating in the drying and dehumidifying process can be discharged from the first air outlet 12 on the right side of the box 10 back to the dehumidifier for recycling. The number and position of the first air outlet 12 can not be specifically limited.

[0050] Reference Figures 2 to 3In some embodiments of the present application, the conveying assembly further comprises rotating rollers (not shown in the figure), the conveying belt 21 is arranged outside the rotating rollers, the conveying belt 21 comprises an upper belt 211 and a return belt 212, the two ends of the upper belt 211 are connected to the two ends of the return belt 212 respectively, and the rotating rollers drive the conveying belt 21 to move. The upper belt 211 and the return belt 212 are connected end to end to form a closed loop circulation conveying, which can continuously dry and dehumidify the film material. Further, the rotating rollers are arranged on the upper side of the oven 20, and a plurality of rotating rollers are arranged on the lower side of the oven 20. It should be noted that the number of rotating rollers on the upper and lower sides is not specifically limited and can complete the conveying of the conveying belt 21. For example, a plurality of rotating rollers are arranged along the length direction of the oven 20, i.e. the front-rear direction shown in the figure, and the rotating rollers on the upper and lower sides are arranged in the same way. At this time, the conveying belt 21 is arranged on the rotating rollers and can be alternately arranged on the upper and lower sides in sequence or first arranged on the upper rotating rollers and then arranged on the lower rotating rollers. More specifically, the rotating rollers at the upper and lower ends are arranged at intervals, and the conveying belt 21 is alternately arranged on the upper and lower sides in sequence, which can effectively increase the area of the conveying belt 21 and place more film materials for drying and dehumidifying. In addition, the arrangement of the conveying belt 21 can effectively use the volume of the oven 20. When hot air enters the oven 20 from the second air inlet on the upper side of the oven 20, the hot air can uniformly pass through each part of the upper belt 211, thereby effectively drying and dehumidifying the film material on the surface of the conveying belt 21.

[0051] Further, referring to Figure 1 , the upper end of the oven 20 is provided with an internal circulation fan 40 which is in communication with the second air inlet 22. Because the air volume of the dehumidifier is large, the hot air delivered from the dehumidifier can quickly fill the inside of the box 10. At this time, the internal circulation fan 40 arranged on the upper end of the oven 20 can be used for rapid delivery to the inside of the oven 20. Through the uniform distribution of the internal circulation fan 40 or the second air inlet 22, the hot air delivered into the oven 20 can be uniformly distributed on the vertically arranged or inclinedly arranged conveying belt 21 in the left-right direction or the front-rear direction of the conveying belt 21.

[0052] Therefore, it is worth noting that because the air volume of the dehumidifier is large (according to the general industrial dehumidifier, the air flow can fill the entire oven 20 in 0.1 s), in most areas of the entire box 10, including the side air duct 13, the inside of the oven 20 and the upper side of the inside of the box 10, the hot air of the dehumidifier is filled. The side air duct 13 and the upper belt 211 in the middle of the oven 20 have the same hot air flow in the same direction as the upper belt 211, thereby forming a large-flow transverse circulation and a longitudinal circulation double-circulation drying and dehumidifying drying mode, which is convenient for drying and dehumidifying the film material by hot air and improves the efficiency of drying and dehumidifying.

[0053] Referring to Figure 1In some embodiments of the present application, the first air outlet 12 is arranged on the cabinet 10 and above the heater 30. At this time, after the air is dried and heated by the dehumidifier, the hot air is discharged into the cabinet 10 from the first air inlet 11 at the upper rear end of the cabinet 10, and the hot air fills the upper part of the interior of the cabinet 10. When the hot air reaches the second air inlet 22 above the top of the oven 20, the hot air enters the oven 20 from the second air inlet 22 and passes through the conveying assembly in the interior of the oven 20, and the film material is placed on the conveying assembly. The dry hot air can take away part of the moisture on the film material, and at the same time, the film material is heated to evaporate the moisture inside, so as to preliminarily dry and dehumidify the film material.

[0054] After passing through the film material, the hot air is discharged from the second air outlet 23 at the lower right side of the oven 20; the hot air discharged from the second air outlet 23 enters the lower part of the side air duct 13, and the heater 30 in the middle part of the side air duct 13 can heat the humid hot air again. After the hot air is heated by the heater 30, the hot air is discharged above the heater 30, i.e. the upper part of the side air duct 13, back to the upper part of the interior of the cabinet 10, and the hot air can pass through the second air inlet 22 together with the fresh hot air delivered from the dehumidifier, enter the oven 20, and dry and dehumidify the film material on the conveying assembly, so as to achieve the purpose of drying and dehumidifying the film material. In this way, the drying and dehumidifying efficiency can be improved, and the energy consumption can be reduced. In addition, part of the hot air heated by the heater 30 flows back to the dehumidifier through the first air outlet 12 for the next cycle.

[0055] Referring to Figure 1 In some embodiments of the present application, the first air outlet 12 is arranged on the cabinet 10 and above the heater 30. At this time, after the air is dried and heated by the dehumidifier, the hot air is discharged into the cabinet 10 from the first air inlet 11 at the upper rear end of the cabinet 10, and the hot air fills the upper part of the interior of the cabinet 10. When the hot air reaches the second air inlet 22 above the top of the oven 20, the hot air enters the oven 20 from the second air inlet 22 and passes through the conveying assembly in the interior of the oven 20, and the film material is placed on the conveying assembly. The dry hot air can take away part of the moisture on the film material, and at the same time, the film material is heated to evaporate the moisture inside, so as to preliminarily dry and dehumidify the film material.

[0056] After passing through the film material, the hot air is discharged from the second air outlet 23 at the right side of the lower end of the oven 20. The hot air discharged from the second air outlet 23 enters the lower part of the side air duct 13, and the heater 30 in the middle part of the side air duct 13 can perform secondary heating on the humid hot air. After the hot air is heated by the heater 30, the hot air is discharged to the upper part of the heater 30, i.e. the upper part of the side air duct 13, back to the upper part of the box body 10, and the hot air can pass through the second air inlet 22 together with the fresh hot air delivered from the dehumidifier into the oven 20 to dry and dehumidify the film material on the conveying assembly, thereby achieving the purpose of drying and dehumidifying the film material. Such a cycle can improve the efficiency of drying and dehumidifying and reduce energy consumption. In addition, part of the hot air delivered from the second air outlet 23 can be delivered out of the box body 10 from the first air outlet 12 and back to the dehumidifier for the next cycle.

[0057] It should be further noted that in other embodiments, the first air outlet 12 can be arranged on the box body 10 and located above and below the heater 30. Therefore, it can be understood that after the dry hot air passes through the film material, the hot air is discharged from the second air outlet 23 at the right side of the lower end of the oven 20. The heater 30 in the middle part of the side air duct 13 can perform secondary heating on the hot air and discharge it to the upper part of the heater 30. The secondary heated hot air can pass through the second air inlet 22 together with the fresh hot air delivered from the dehumidifier into the oven 20 to dry and dehumidify the film material on the conveying assembly, thereby achieving the purpose of drying and dehumidifying the film material. Such a cycle can improve the efficiency of drying and dehumidifying and reduce energy consumption. In addition, part of the hot air delivered from the second air outlet 23 can be delivered back to the dehumidifier from the first air outlet 12 above the heater 30 after being heated by the heater 30, thereby facilitating the heating and dehumidifying of the dehumidifier. The first air outlet 12 below the heater 30 can also directly deliver out of the box body 10 and back to the dehumidifier for drying and dehumidifying, waiting for the next cycle.

[0058] From the above three embodiments, it can be understood that the different setting positions of the first air outlet 12 make the air flow field distribution of the side air duct 13 and the hot air in the oven 20 meet the production requirements of the assembly line. Through numerical calculation simulation of the hot air flow field, it is found that the hot air gas delivered from the first air inlet 11 is evenly distributed in the front and rear directions and the left and right directions of the upper belt 211 in the three different arrangements of the first air outlet 12; at the same time, the gas delivered into the oven 20 by the internal circulation fan 40 is distributed in the same way in each area of the upper belt 211, which can meet the production requirements of the assembly line. In addition, it can also be understood that, compared with the case where the first air outlet 12 is located above the heater 30, the case where the first air outlet 12 is located below the heater 30 is more conducive to the discharge of the gas in the oven 20, and has the potential to save energy. Because the temperature of the gas needs to be lowered to condense the moisture, the temperature of the gas below the heater 30 is lower than that above the heater 30, so it is convenient for the gas to be discharged, and at the same time, the position of the first air outlet 12 is located on one side of the second air outlet, which also facilitates the discharge of the gas.

[0059] The above embodiments are all based on the first air inlet 11 being arranged above the heater 30, and different setting modes of the first air outlet 12 are listed. Referring to Figure 1 In other embodiments of the present application, the first air inlet 11 is arranged on the box body 10 and can also be located below the heater 30. At this time, the dehumidifier discharges the hot air from the first air inlet 11 at the lower part of the rear end of the box body 10 into the box body 10 after drying and heating the air, and the hot air fills the lower side of the side air duct 13. The hot air is subjected to secondary heating by the heater 30 and is delivered to the top of the oven 20. After the hot air reaches the second air inlet 22 above the top of the oven 20, it enters the oven 20 from the second air inlet 22 and passes through the conveying assembly inside the oven 20, and the film material is placed on the conveying assembly. The dry hot air can take away part of the moisture on the film material, and at the same time, the film material is heated to evaporate the moisture inside, so as to preliminarily dry and dehumidify the film material.

[0060] It should be noted that the first air inlet 11 is located below the heater 30, which can make the hot air subjected to secondary drying and heating by the heater 30, so that the drying and dehumidifying effect of the film material is better and the efficiency is higher.

[0061] Furthermore, in other embodiments, the first air inlet 11 can also be arranged above and below the heater 30 at the same time. Arranging the first air inlet 11 on both sides of the heater 30 30 can increase the air inlet amount and improve the efficiency of the hot air drying and dehumidifying the film material, so the setting mode of the first air inlet 11 is not limited.

[0062] It is emphasized that the setting position of the first air inlet 11 and the setting position of the first air outlet 12 do not affect each other, and can be simultaneously arranged below or above the heater 30, or can be arranged above or below the heater 30 respectively, or even can be simultaneously arranged with one or two, etc., which can not be specifically limited in the embodiment of the present application, but it is necessary to explain that when the first air outlet 12 and the first air inlet 11 are provided with two, the first air outlet 12 and the first air inlet 11 should be arranged on the upper and lower sides of the heater 30 respectively.

[0063] Preferably, when the first air inlet 11 and the first air outlet 12 are simultaneously arranged below the heater 30, the hot air enters from below the heater 30, can be secondarily heated by the heater 30, can improve the effect and efficiency of drying and dehumidifying, and the hot air transported back to the dehumidifier from the first air outlet 12 is more helpful for the exhaust of the gas in the oven 20, and has the potential of saving energy.

[0064] Referring to Figure 4 , according to the film drying and dehumidifying method of the second aspect embodiment of the present application, the film drying and dehumidifying method is applied to a film drying and dehumidifying device, and the drying and dehumidifying device comprises: a box body 10, an oven 20, and a heater 30, and an internal circulating fan 40. One side of the box body 10 is provided with a first air inlet 11 and a first air outlet 12, the first air inlet 11 and the first air outlet 12 are connected to a dehumidifier respectively, and the first air inlet 11 and the first air outlet 12 are located at two ends of the box body 10 respectively; the oven 20 is arranged on one side in the box body 10, and the other side in the box body 10 is provided with a side air duct 13, the oven 20 is internally provided with a conveying assembly, the conveying assembly comprises a conveying belt 21, the film material is placed on the conveying belt 21, the conveying belt 21 is used for conveying the film material, the upper end of the oven 20 is provided with a second air inlet 22, the second air inlet 22 communicates the inside of the box body 10 and the inside of the oven 20, and the lower end of the oven 20 is provided with a second air outlet 23 on one side, the second air outlet 23 communicates the lower part of the side air duct 13 and the inside of the oven 20; the heater 30 is arranged in the side air duct 13, the heater 30 communicates the upper part of the side air duct 13 and the lower part of the side air duct 13, and the heater 30 is used for heating the gas; the internal circulating fan 40 is arranged at the second air inlet 22, and the internal circulating fan 40 communicates the inside of the box body 10 and the inside of the oven 20; wherein the first air outlet 12 is located on the upper side of the heater 30 and / or the lower side of the heater 30, and the first air inlet 11 is located above the heater 30 and / or below the heater 30.

[0065] From the above device, the dehumidifier will air drying heating, hot air from the box 10 rear end of the first air inlet 11 in the box 10, hot air in the box 10 inside the upper part, hot air to the oven 20 top of the second air inlet 22, after the delivery of the internal circulation fan 40, from the second air inlet 22 into the oven 20 and through the oven 20 inside the conveying assembly, and the conveying assembly on the film material, dry hot air can be on the film material to take away part of the moisture, while heating the film material, so that the internal moisture evaporation, so that the film material for preliminary drying.

[0066] And then through the film material, hot air from the oven 20 lower end of the right side of the second air outlet 23; from the second air outlet 23 of the hot air into the lower part of the side air duct 13, and the heater 30 in the middle of the side air duct 13 can be heated to the hot air twice; the use of heater 30 for hot air heating, hot air discharge to the heater 30 above, that is, the upper part of the side air duct 13, back to the inside of the box 10 upper part, hot air can be accompanied by fresh from the dehumidifier conveying hot air together through the second air inlet 22, into the oven 20, on the film material drying on the conveying assembly, so as to achieve the purpose of film drying, so the cycle can improve the efficiency of drying, but also can reduce energy consumption.

[0067] In addition, because the first air outlet 12 can be arranged on the upper side and / or lower side of the heater 30, when the hot air is discharged from the second air outlet 23 and enters the lower part of the side air duct 13, it can be returned to the dehumidifier through the first air outlet 12 below the heater 30, or it can be heated by the heater 30 and delivered to the upper part of the side air duct 13, and returned to the dehumidifier through the first air outlet 12 above the heater 30.

[0068] Therefore, the film drying and dehumidifying method can include the following steps:

[0069] Step 1: turn on the dehumidifier, the heater 30 and the internal circulation fan 40, and turn on the conveying assembly, and the drying and dehumidifying device is in the starting state;

[0070] Step 2: the dehumidifier enters the heated hot air into the box 10 through the first air inlet, and the internal circulation fan 40 discharges the hot air in the box 10 to the inside of the oven 20, and the hot air dries and dehumidifies the film on the conveying assembly;

[0071] Step 3, hot air from the second air outlet 23 to the lower part of the side air duct 13, the heater 30 will be heated after the dehumidification and drying of the hot air, and then discharged back to the oven 20 or discharged back to the dehumidifier from the first air outlet 12, for hot air recycling.

[0072] In step three, after the hot air from the second air inlet 22 enters the oven 20, the film material is preliminarily dried and dehumidified, and then enters the side air duct 13 from the second air outlet 23. The hot air is heated by the heater 30, circulated to the upper side of the heater 30, and enters the oven 20 again through the second air inlet 22 to be dried and dehumidified. The hot air is circulated repeatedly to improve the drying and dehumidifying efficiency. The dried and dehumidified hot air is discharged from the first air outlet 12 on one side of the cabinet 10 to the dehumidifier for recycling.

[0073] Specifically, in some embodiments of the present application, when the first air inlet 11 is located above and / or below the heater 30, step two includes:

[0074] The dehumidifier enters the cabinet 10 from the first air inlet 11 above the heater 30, and the heater 30 performs secondary heating on part of the hot air. The inner circulating fan 40 transports the secondary heated hot air into the oven 20 through the second air inlet 22, and the secondary heated hot air is used to dry and dehumidify the film material on the conveying assembly;

[0075] Or also includes: the dehumidifier enters the cabinet 10 from the first air inlet 11 below the heater 30, and the heater 30 performs secondary heating on all hot air. The inner circulating fan 40 transports the secondary heated hot air into the oven 20 through the second air inlet 22, and the secondary heated hot air is used to dry and dehumidify the film material on the conveying assembly;

[0076] It can also include: the dehumidifier enters the cabinet 10 from the first air inlet 11 above and below the heater 30, and the dried hot air is transported into the cabinet 10 from both sides at the same time, which can increase the air intake and improve the efficiency of drying and dehumidifying the film material.

[0077] Similarly, in other embodiments of the present application, when the first air outlet 12 is located above and / or below the heater 30, step three includes:

[0078] The hot air is discharged from the second air outlet 23 to the lower part of the side air duct 13, the heater 30 circulates and heats the dehumidified and dried hot air and discharges it into the side air duct 13 on the upper side of the heater 30, and the heated hot air enters the oven 20 again from the inner circulating fan 40 to be dried and dehumidified and flows back to the dehumidifier from the first air outlet 12 above the heater 30;

[0079] Or also includes: the hot air is discharged from the second air outlet 23 to the lower part of the side air duct 13, the heater 30 circulates and heats the dehumidified and dried hot air and discharges it into the side air duct 13 on the upper side of the heater 30 and flows back to the dehumidifier from the first air outlet 12 above the heater 30.

[0080] It can also include: hot air from the second air outlet 23 to the lower part of the side air duct 13, the heater 30 will be after the drying of the hot air cycle heating and discharge to the heater 30 side of the upper air duct 13, the heated hot air from the inner circulating fan 40 again into the oven 20 drying and dehumidification and at the same time from the heater 30 above and below the first air outlet 12 back to the dehumidifier.

[0081] The above-mentioned embodiments provide a method, which can be understood that the heater 30 in the film drying and dehumidifying device in the embodiment of the application is matched with the setting position of the different first air outlet 12 and the first air inlet 11, which can realize the purpose of hot air internal circulation and repeated use, can improve the drying and dehumidifying efficiency of the film, and can also reduce the energy consumption of the dehumidifier.

[0082] The embodiments of the application are described in detail above in combination with the drawings, but the application is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by those skilled in the art without departing from the purpose of the application.

Claims

1. A film material drying and dehumidifying device characterized by comprising: The application relates to a film material drying and dehumidifying device. The box body (10) is provided with a first air inlet (11) and a first air outlet (12) on one side, the first air inlet (11) and the first air outlet (12) are connected with dehumidifiers respectively, and the first air inlet (11) and the first air outlet (12) are located at two ends of the box body (10) respectively. An oven (20) is arranged on one side in the box body (10), the other side in the box body (10) is provided with a side air duct (13), the oven (20) is internally provided with a conveying assembly, the conveying assembly comprises a conveying belt (21), the conveying belt (21) is used for placing a film material, the conveying belt (21) is used for conveying the film material, second air inlets (22) are uniformly arranged on the upper end of the oven (20) along the length direction of the oven (20), the second air inlets (22) are communicated with the inside of the box body (10) and the inside of the oven (20), and a second air outlet (23) is arranged on one side of the lower end of the oven (20), the second air outlet (23) is communicated with the lower part of the side air duct (13) and the inside of the oven (20). The conveying assembly further comprises rotating rollers, the conveying belt (21) is arranged outside the rotating rollers, the conveying belt (21) comprises an upper belt (211) and a return belt (212), the two ends of the upper belt (211) are connected with the two ends of the return belt (212) respectively, and the rotating rollers drive the conveying belt (21) to move; the rotating rollers are arranged at the upper end and the lower end of the oven (20), the rotating rollers are arranged at intervals along the length direction of the oven (20), the rotating rollers at the upper end and the lower end are arranged at intervals, and the conveying belt (21) is arranged around the rotating rollers; and A heater (30) is arranged in the side air duct (13), the heater (30) is communicated with the upper part of the side air duct (13) and the lower part of the side air duct (13), and the heater (30) is used for heating gas.

2. The film drying and dehumidifying device according to claim 1, wherein The first air outlet (12) is arranged on the box body (10) and located above and / or below the heater (30).

3. The film drying and dehumidifying device according to claim 1 or 2, characterized in that, The first air inlet (11) is arranged on the box body (10) and located above and / or below the heater (30).

4. The film drying and dehumidifying device according to claim 1, wherein The upper end of the oven (20) is provided with an internal circulation fan (40), and the internal circulation fan (40) is communicated with the second air inlet (22).

5. A method of drying and dehumidifying a film material, characterized by, The application relates to a film material drying and dehumidifying device. The box body (10) is provided with a first air inlet (11) and a first air outlet (12) on one side, the first air inlet (11) and the first air outlet (12) are connected with dehumidifiers respectively, and the first air inlet (11) and the first air outlet (12) are located at two ends of the box body (10) respectively. An oven (20) is arranged on one side of the cabinet (10), the other side of the cabinet (10) is arranged with a side air duct (13), the oven (20) is internally arranged with a conveying assembly, the conveying assembly comprises a conveying belt (21), the film material is placed on the conveying belt (21), the conveying belt (21) is used for conveying the film material, the upper end of the oven (20) is arranged with a second air inlet (22), the second air inlet (22) is communicated with the inside of the cabinet (10) and the inside of the oven (20), the lower end of the oven (20) is arranged with a second air outlet (23) on one side, the second air outlet (23) is communicated with the lower part of the side air duct (13) and the inside of the oven (20); and A heater (30) is arranged in the side air duct (13), the heater (30) is communicated with the upper part of the side air duct (13) and the lower part of the side air duct (13), and the heater (30) is used for heating the gas; An internal circulation fan (40) is arranged at the second air inlet (22), and the internal circulation fan (40) is communicated with the inside of the cabinet (10) and the inside of the oven (20); Wherein, the first air outlet (12) is located above and / or below the heater (30); the first air inlet (11) is located above and / or below the heater (30); The film drying and dehumidifying method comprises the following steps: Step one: turn on the dehumidifier, the heater (30) and the internal circulation fan (40), and turn on the conveying assembly at the same time, and the drying and dehumidifying device is in the starting state; Step two: the dehumidifier enters the inside of the cabinet (10) through the first air inlet (11) after the dehumidified hot air, the heater (30) heats the hot air again, and the internal circulation fan (40) discharges the hot air in the inside of the cabinet (10) to the inside of the oven (20), and the hot air on the conveying assembly dries and dehumidifies the film material; Step three: the hot air is discharged from the second air outlet (23) to the lower part of the side air duct (13), the heater (30) circulates and heats the dehumidified and dried hot air, and discharges it back to the oven (20) or from the first air outlet (12) back to the dehumidifier, for hot air recycling.

6. The method of claim 5, wherein the film is a polyethylene film. When the first air inlet (11) is located above and / or below the heater (30), the step two comprises: The dehumidifier enters the hot air after dehumidification from the first air inlet (11) above and / or below the heater (30) into the cabinet (10), the heater (30) performs secondary heating on the hot air, the inner circulating fan (40) delivers the hot air after secondary heating into the oven (20) through the second air inlet (22), and the hot air after secondary heating performs drying and dehumidification on the film material on the conveying assembly.

7. The film drying and dehumidifying method according to claim 5 or 6, wherein When the first air outlet (12) is located above and / or below the heater (30), the step three includes: The hot air after drying and dehumidification for the film material is discharged from the second air outlet (23) to the lower part of the side air duct (13), the heater (30) performs circulating heating on the hot air and discharges it into the side air duct (13) on the upper side of the heater (30), and the heated hot air is again delivered into the oven (20) from the inner circulating fan (40) or directly delivered back into the dehumidifier from the first air outlet (12) above and / or below the heater (30), for hot air recycling.

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