Flat sheet membrane drying system

Abstract

The utility model provides a flat sheet membrane drying system which comprises a fan heater, a dehumidifier and a drying device, the drying device comprises a drying unit, a drainage unit arranged below the drying unit and an air exhaust unit arranged above the drying unit, the drying unit is communicated with the fan heater through a pipeline, and the air exhaust unit is communicated with the dehumidifier through a pipeline; the drying unit comprises a plurality of first air knives arranged at intervals and second air knives arranged below the first air knives, gaps allowing the flat sheet membrane to pass through are formed between air outlets of the first air knives and air outlets of the second air knives, the plane where the flat sheet membrane is located serves as a reference plane, and the air outlets of the first air knives are downwards inclined; the air outlets of the second air knives are obliquely arranged upwards, the air outlet direction of the first air knives and the air outlet direction of the second air knives are crossed in space, and the crossing angle ranges from 45 degrees to 90 degrees. The flat sheet membrane drying device can quickly dry a flat sheet membrane, improves the drying efficiency, gets rid of the limitation of traditional natural drying, and can meet the requirement of large-scale production.

Description

Technical Field

[0001] This utility model relates to the field of flat film drying technology, and in particular to a flat film drying system. Background Technology

[0002] Flat sheet membranes are planar membrane materials made from polymer materials through specific processes. They have excellent separation performance and can achieve precise separation of mixed systems based on the differences in the physicochemical properties of substances. They are widely used in many fields such as water treatment, food and beverage processing, and biomedicine.

[0003] Traditional flat film drying mainly relies on natural air drying, which involves placing the flat film under the sun to dry naturally. This method is highly dependent on the weather; when the weather is unstable, the drying process cannot be guaranteed, and it has many drawbacks. On the one hand, it is greatly limited by weather conditions, and drying operations cannot be carried out normally in rainy weather. On the other hand, natural air drying is time-consuming, requires a lot of time costs, and has low drying efficiency, which cannot meet the current demand for large-scale and high-efficiency production. Therefore, there is an urgent need to develop a flat film drying system. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide a flat film drying system, which aims to solve the technical problems of traditional flat film drying, which adopts natural air drying, is extremely dependent on the weather, takes a long time, is inefficient, and cannot meet the current needs of large-scale and high-efficiency production.

[0005] The purpose of this utility model is to provide a flat film drying system, including a warm air blower, a dehumidifier, and a drying device. The drying device includes a drying unit, a drainage unit located below the drying unit, and an air extraction unit located above the drying unit. The drying unit is connected to the warm air blower through a pipe, and the air extraction unit is connected to the dehumidifier through a pipe.

[0006] The drying unit includes multiple spaced-apart first air knives and a second air knife located below the first air knives. A gap is provided between the air outlets of the first air knives and the air outlets of the second air knives to allow the flat film to pass through. With the plane where the flat film is located as the reference plane, the air outlets of the first air knives are inclined downwards, and the air outlets of the second air knives are inclined upwards. The air outlet directions of the first air knives and the air outlet directions of the second air knives are spatially intersected, with an intersection angle of 45°-90°.

[0007] Compared to existing technologies, the advantages of this flat film drying system are as follows: By incorporating a warm air blower, a dehumidifier, and a drying device, it achieves rapid drying of the flat film, significantly improving drying efficiency and overcoming the limitations of traditional natural air drying. This meets the needs of large-scale production. Specifically, the drying device includes a drying unit, a drainage unit, and an extraction unit. Warm air from the warm air blower enters the first and second air knives within the drying unit, heating both sides of the flat film and promoting moisture evaporation. Simultaneously, the dehumidifier, connected to the extraction unit, effectively dehumidifies the internal environment of the drying device, promptly removing rising water vapor to maintain a dry drying environment, improve drying efficiency, and ensure the drying quality of the flat film. Furthermore, the drainage unit effectively collects and discharges excess moisture, preventing backflow and ensuring stable drying operations.

[0008] In addition, the flat film drying system according to the present invention may also have the following additional technical features:

[0009] Furthermore, the drying unit also includes a first air inlet pipe, a second air inlet pipe arranged parallel to the first air inlet pipe, and a third air inlet pipe for communicating with the heater. The air inlet of the first air inlet pipe and the air inlet of the second air inlet pipe are respectively connected to the third air inlet pipe. The air outlet of the first air inlet pipe is connected to the first air knife, and the air outlet of the second air inlet pipe is connected to the second air knife.

[0010] Furthermore, the drying unit also includes two first protective plates and two second protective plates. The two first protective plates are respectively disposed on both sides of the drying device along the length direction. The first protective plates are provided with first through holes for the flat film to pass through. The two second protective plates are respectively disposed on both sides of the drying device along the width direction. The second protective plates are provided with a plurality of ventilation holes evenly spaced apart.

[0011] Furthermore, the drying device also includes a pressure roller unit, which includes a plurality of first pressure rollers spaced apart and a second pressure roller located directly below the first pressure rollers. A gap is provided between the first pressure rollers and the second pressure rollers for the flat film to pass through.

[0012] Furthermore, the drainage unit includes a collection tank and a drainage pipe communicating with the bottom of the collection tank. The cross-section of the collection tank is an inverted trapezoidal shape, and the dehumidifier is located below the collection tank.

[0013] Furthermore, the drainage unit also includes a plurality of third protective plates, which are arranged around the circumference of the collection tank and together form a receiving space, in which the dehumidifier is provided.

[0014] Furthermore, the air extraction unit includes a cover, a plurality of first air extraction pipes spaced apart on the cover, and a second air extraction pipe connected to the first air extraction pipes. The cover is located directly above the drying unit, and the air outlet of the second air extraction pipe is connected to the dehumidifier. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the flat film drying system of this utility model;

[0016] Figure 2 This is a schematic diagram of the flat film drying system of this utility model with part of the third protective plate removed;

[0017] Figure 3 This is a schematic diagram of the internal structure of the flat film drying system of this utility model.

[0018] The above-mentioned figures include the following reference numerals: 10-Warm air blower; 21-Drying unit; 211-First air knife; 212-Second air knife; 213-First protective plate; 214-Second protective plate; 201-First air inlet duct; 202-Second air inlet duct; 203-Third air inlet duct; 204-First through hole; 205-Second through hole; 22-Pressure roller unit; 221-First pressure roller; 222-Second pressure roller; 23-Drainage unit; 231-Collection tank; 232-Drainage pipe; 233-Third protective plate; 24-Extraction unit; 241-Cover; 242-First extraction pipe; 243-Second extraction pipe; 30-Dehumidifier; 40-Flat sheet membrane.

[0019] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0020] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0021] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] Please see Figures 1 to 3 The figure shows a flat film drying system of the present invention, including a warm air blower 10, a dehumidifier 30 and a drying device. The warm air blower 10 is used to deliver warm air to the drying device, so that the moisture on the flat film 40 evaporates into water vapor, thereby drying the flat film 40. The dehumidifier 30 is used to extract and collect the water vapor at the top of the drying device, thereby achieving the function of dehumidification.

[0024] In this embodiment, the drying device includes a drying unit 21, a drainage unit 23 located below the drying unit 21, and an extraction unit 24 located above the drying unit 21. The drying unit 21 is connected to the heater 10 via a pipe, and the extraction unit 24 is connected to the dehumidifier 30 via a pipe. Specifically, the drying unit 21 includes a plurality of spaced-apart first air knives 211 and second air knives 212 located below the first air knives 211. A gap is provided between the air outlets of the first air knives 211 and the air outlets of the second air knives 212 for the flat sheet membrane 40 to pass through. Taking the plane where the flat sheet membrane 40 is located as the reference plane, the air outlets of the first air knives 211 are inclined downwards, and the air outlets of the second air knives 212 are inclined upwards. The air outlet directions of the first air knives 211 and the air outlet directions of the second air knives 212 are spatially intersecting, with an intersection angle of 45°-90°. As a specific example, in this embodiment, the drying unit 21 includes four first air knives 211 and four second air knives 212. The second air knives 212 are located directly below the first air knives 211, with the plane where the flat film 40 is located as the reference plane. The air outlets of the first air knives 211 are arranged facing downward to the left, and the air outlets of the second air knives 212 are arranged facing upward to the left. The intersection angle between the air outlet directions of the first air knives 211 and the air outlet directions of the second air knives 212 is 50°.

[0025] Furthermore, the drying unit 21 also includes a first air inlet duct 201, a second air inlet duct 202 arranged parallel to the first air inlet duct 201, and a third air inlet duct 203 for connecting to the heater 10. The air inlet of the first air inlet duct 201 and the air inlet of the second air inlet duct 202 are respectively connected to the third air inlet duct 203. The air outlet of the first air inlet duct 201 is connected to the first air knife 211, and the air outlet of the second air inlet duct 202 is connected to the second air knife 212.

[0026] Furthermore, the drying unit 21 also includes two first protective plates 213 and two second protective plates 214. The two first protective plates 213 are respectively located on both sides of the drying device in the length direction. The first protective plates 213 are provided with first through holes 204 for the flat film 40 to pass through. The two second protective plates 214 are respectively located on both sides of the drying device in the width direction. The second protective plates 214 are provided with a plurality of second through holes 205 evenly spaced on them. The second through holes 205 are used to connect the inside of the drying device with the outside atmosphere.

[0027] Furthermore, the drying device also includes a pressure roller unit 22, which includes a plurality of spaced-apart first pressure rollers 221 and a second pressure roller 222 located directly below the first pressure rollers 221. A gap is provided between the first pressure rollers 221 and the second pressure rollers 222 for the flat film 40 to pass through. As a specific example, in this embodiment, the pressure roller unit 22 includes three first pressure rollers 221 and three second pressure rollers 222. More specifically, a first pressure roller 221 is located at the center of the four first air knives 211, and a first pressure roller 221 is located on both sides of the four first air knives 211. In actual use, the first pressure rollers 221 and the second pressure rollers 222 cooperate with each other to apply appropriate pressure to both sides of the flat film 40 to ensure that the surface of the flat film 40 remains flat during the drying process.

[0028] Furthermore, the drainage unit 23 includes a collection tank 231 and a drainage pipe 232 communicating with the bottom of the collection tank 231, so as to effectively collect and discharge excess moisture on the flat sheet membrane. The dehumidifier 30 is located below the collection tank 231, and the cross-section of the collection tank 231 is an inverted trapezoidal shape. The inverted trapezoidal structure helps to guide the water flow to converge at the bottom center of the collection tank 231, making the drainage smoother and ensuring drainage efficiency.

[0029] Furthermore, the drainage unit 23 also includes a plurality of third protective plates 233, which are arranged around the circumference of the collection tank 231, and the plurality of third protective plates 233 together form a receiving space, in which a dehumidifier 30 is provided.

[0030] Furthermore, the extraction unit 24 includes a cover 241, a plurality of first extraction pipes 242 spaced apart on the cover 241, and a second extraction pipe 243 connected to the first extraction pipes 242. The cover 241 is located directly above the drying unit 21, and the outlet of the second extraction pipe 243 is connected to the dehumidifier 30 to effectively collect the gas generated by the drying unit 21. As a specific example, in this embodiment, three first extraction pipes 242 are spaced apart on the cover 241 to ensure uniform extraction, so that the water vapor generated during the drying process can be collected in a timely and rapid manner, improving dehumidification efficiency, maintaining a dry drying environment, ensuring the drying effect, and preventing the accumulation of water vapor from affecting the normal drying process.

[0031] In practical use, the operating principle of the flat film drying system of this utility model is as follows: When the flat film 40 is placed in the drying device and located in the gap between the first air knife 211 and the second air knife 212, the dehumidifier 30 and the heater 10 are started. The warm air generated by the heater 10 will sequentially pass through the third air inlet channel, the second air inlet pipe 202, and the first air inlet pipe 201, flowing into the second air knife 212 and the first air knife 211 respectively, and then reaching the two sides of the flat film 40, heating the two sides of the flat film 40, causing the moisture carried by the flat film 40 to evaporate into water vapor, thus achieving the purpose of quickly drying the flat film 40. During the drying process, the water vapor spontaneously rises to the top of the drying device. Under the action of the dehumidifier 30's suction function, it enters the dehumidifier 30 through the three first suction pipes 242 and the second suction pipes 243 on the cover 241, thereby achieving the purpose of dehumidification. In addition, excess water on the flat sheet membrane 40 will automatically drip into the collection tank 231 below and eventually be discharged through the drain pipe 232.

[0032] In summary, the beneficial effects of this flat film drying system are as follows: by incorporating a warm air blower, a dehumidifier, and a drying device, it achieves rapid drying of the flat film, overcoming the limitations of traditional natural air drying and meeting the needs of large-scale production. Specifically, the drying device includes a drying unit, a drainage unit, and an extraction unit. The warm air output from the warm air blower enters the first and second air knives within the drying unit, heating both sides of the flat film and promoting the evaporation of moisture from both surfaces. Simultaneously, by connecting the dehumidifier to the extraction unit, effective dehumidification of the internal environment of the drying device is achieved, promptly removing rising water vapor, maintaining a dry drying environment, improving drying efficiency, and ensuring the drying quality of the flat film. Furthermore, the drainage unit effectively collects and discharges excess moisture, preventing backflow and ensuring stable drying operations.

[0033] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this utility model application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model application should be determined by the appended claims.

Claims

1. A flat film drying system, characterized in that, The device includes a heater, a dehumidifier, and a drying device. The drying device includes a drying unit, a drainage unit located below the drying unit, and an exhaust unit located above the drying unit. The drying unit is connected to the heater via a pipe, and the exhaust unit is connected to the dehumidifier via a pipe. The drying unit includes multiple spaced-apart first air knives and a second air knife located below the first air knives. A gap is provided between the air outlets of the first air knives and the air outlets of the second air knives to allow the flat film to pass through. With the plane where the flat film is located as the reference plane, the air outlets of the first air knives are inclined downwards, and the air outlets of the second air knives are inclined upwards. The air outlet directions of the first air knives and the air outlet directions of the second air knives are spatially intersected, with an intersection angle of 45°-90°.

2. The flat film drying system according to claim 1, characterized in that, The drying unit further includes a first air inlet pipe, a second air inlet pipe arranged parallel to the first air inlet pipe, and a third air inlet pipe for connecting to the heater. The air inlet of the first air inlet pipe and the air inlet of the second air inlet pipe are respectively connected to the third air inlet pipe. The air outlet of the first air inlet pipe is connected to the first air knife, and the air outlet of the second air inlet pipe is connected to the second air knife.

3. The flat film drying system according to claim 1, characterized in that, The drying unit further includes two first protective plates and two second protective plates. The two first protective plates are respectively located on both sides of the drying device along its length. The first protective plates are provided with first through holes for the flat film to pass through. The two second protective plates are respectively located on both sides of the drying device along its width. The second protective plates are provided with a plurality of ventilation holes evenly spaced apart.

4. The flat film drying system according to claim 1, characterized in that, The drying device further includes a pressure roller unit, which includes a plurality of first pressure rollers spaced apart and a second pressure roller located directly below the first pressure rollers. A gap is provided between the first pressure rollers and the second pressure rollers for the flat film to pass through.

5. The flat film drying system according to claim 1, characterized in that, The drainage unit includes a collection tank and a drainage pipe communicating with the bottom of the collection tank. The cross-section of the collection tank is an inverted trapezoidal shape, and the dehumidifier is located below the collection tank.

6. The flat film drying system according to claim 5, characterized in that, The drainage unit also includes a plurality of third protective plates, which are arranged around the circumference of the collection tank and together form a receiving space, in which the dehumidifier is installed.

7. The flat film drying system according to claim 1, characterized in that, The air extraction unit includes a cover, a plurality of first air extraction pipes spaced apart on the cover, and a second air extraction pipe connected to the first air extraction pipes. The cover is located directly above the drying unit, and the outlet of the second air extraction pipe is connected to the dehumidifier.

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