A pressurizing device for gel membrane production

Abstract

This utility model discloses a pressurizing device for gel membrane production, belonging to the field of gel membrane production technology. The device includes an air compressor, the output end of which is connected to a buffer device. The buffer device includes an outer cylinder, inside which is an airbag assembly. The airbag assembly consists of multiple interconnected airbags with progressively increasing internal pressure. An airflow channel is provided inside the outer cylinder to facilitate gas flow. One end of the airflow channel is connected to the air compressor output, and the other end is connected to a delivery pipe for connection to an external device. This utility model features an airbag assembly with a stepped pressure compensation mechanism. This layered buffer structure decomposes a single large pressure change into multiple small adjustments, effectively reducing the deformation of individual airbags and minimizing fatigue damage, thereby significantly extending the service life of the entire pressurizing system and ensuring production stability.

Description

Technical Field

[0001] This utility model relates to the field of gel membrane production technology, and in particular to a pressurizing device for gel membrane production. Background Technology

[0002] Gel film production is a process of creating a thin film with a three-dimensional network structure from polymer materials using specific techniques. In the production process, the polymer solute is first dissolved in a suitable solvent to prepare a solution, and then additives such as crosslinking agents are added. The solution is then uniformly dispersed through stirring and ultrasonication. Subsequently, the solution is evenly spread onto the surface of a substrate using a casting method. After drying and curing, the solvent evaporates, and crosslinking reactions occur between the polymer chains, forming a stable three-dimensional network gel structure. This ultimately yields a gel film with certain strength, flexibility, and functional properties.

[0003] In the casting process, the polyamic acid solution is first defoamed under vacuum. Then, the defoamed solution is carefully placed in a stainless steel solution tank. An air compressor is turned on to generate pressure, which is transmitted through pre-connected piping. Under pressure, the solution is slowly forced out of the stainless steel tank and continuously transported along the piping. Finally, the solution is precisely pressed into a specially designed spout reservoir on the front of the casting head, preparing for subsequent uniform casting and film formation.

[0004] In the process of pressurizing gas using an air compressor to transport polyamic acid solutions, pressure instability often occurs. Therefore, a buffer device is typically installed between the air compressor and the storage tank. However, existing buffer devices mostly use a single air bladder for buffering. The buffering capacity of this single air bladder is limited; while it can balance vibrations during transport, it generates significant pressure shocks when the air compressor is turned on and off, and when valves are switched. These shocks cause significant deformation of the single air bladder, and over time, this accelerates bladder fatigue, leading to a reduced lifespan of the pressurization system. Utility Model Content

[0005] This invention provides a pressurizing device for gel membrane production, which solves the problem in existing pressurizing systems where significant pressure shocks occur during compressor start-up, shutdown, and valve switching. These shocks cause substantial deformation of individual air bladders, leading to increased fatigue of the air bladders and a reduced lifespan of the pressurizing system over time.

[0006] A pressurizing device for gel film production includes an air compressor. The output end of the air compressor is connected to a buffer device. The buffer device includes an outer cylinder. An airbag assembly is disposed inside the outer cylinder. The airbag assembly consists of multiple sets of interconnected airbags. The air pressure inside the multiple sets of airbags increases sequentially. An airflow channel is disposed inside the outer cylinder to facilitate gas flow. One end of the airflow channel is connected to the output end of the air compressor, and the other end is connected to a delivery pipe that connects to an external device.

[0007] As a further embodiment of this utility model: the airbag assembly includes a high-pressure airbag, a low-pressure airbag, and a medium-pressure airbag located between the high-pressure airbag and the low-pressure airbag.

[0008] As a further embodiment of this utility model: the high-pressure airbag, the medium-pressure airbag, and the low-pressure airbag are all cylindrical structures, the cylindrical structure includes an outer wall and an inner wall, and the outer wall and the inner wall are sealed together, the gas is stored between the outer wall and the inner wall, the high-pressure airbag, the medium-pressure airbag, and the low-pressure airbag are arranged coaxially from the outside to the inside, and the airflow channel is located in the middle of the low-pressure airbag.

[0009] As a further embodiment of this utility model: three sets of inflation valves are provided on one side of the outer cylinder, which are respectively connected to the high-pressure airbag, the medium-pressure airbag and the low-pressure airbag.

[0010] As a further embodiment of this utility model: three sets of air pressure sensors are provided on one side of the outer cylinder, which are respectively connected to the high-pressure airbag, the medium-pressure airbag and the low-pressure airbag.

[0011] As a further embodiment of this utility model: the bottom of the air compressor is provided with a base for fixing the air compressor and the outer cylinder.

[0012] As a further embodiment of this utility model: the outer cylinder is disposed at the bottom of the air compressor, and the output end of the air compressor is provided with a connecting pipe that communicates with the end of the outer cylinder.

[0013] As a further embodiment of this utility model: the two ends of the outer cylinder are provided with outwardly extending conical sidewalls at the positions where they connect with the connecting pipe and the conveying pipe.

[0014] As a further embodiment of this utility model: the high-pressure airbag, the medium-pressure airbag, and the low-pressure airbag are all spherical and are arranged concentrically from the inside to the outside.

[0015] As a further embodiment of this utility model: the high-pressure airbag, medium-pressure airbag, and low-pressure airbag are all made of fluororubber or aramid fiber and fluororubber composite material.

[0016] The beneficial effects of this utility model are:

[0017] 1. This utility model incorporates an airbag assembly with a stepped pressure compensation mechanism. The low-pressure airbag, with its thin-walled elastic structure, deforms rapidly, preferentially absorbing minute pressure changes such as high-frequency pulsations generated by mechanical forces, thus preventing sudden and significant changes in system pressure. The medium-pressure airbag, with moderate elasticity and rigidity, intervenes when pressure fluctuations intensify, balancing medium-frequency fluctuations and preventing significant deformation of the low-pressure airbag. The high-pressure airbag, utilizing its large volume, slowly absorbs pressure and reduces pressure spikes when system pressure rises significantly or when low-frequency impacts occur. This layered buffering structure decomposes a single large pressure change into multiple small adjustments, effectively reducing the deformation of individual airbags, minimizing airbag fatigue damage, and thus significantly extending the service life of the entire pressurization system, ensuring production stability.

[0018] 2. In use, this utility model features three sets of inflation valves and pressure sensors on one side of the outer cylinder, which are respectively connected to the high-pressure, medium-pressure, and low-pressure airbags. The pressure sensors can detect pressure changes inside the airbags in real time and accurately feed the data back to the control system. Once the pressure of any airbag falls below the set value, the control system will immediately remind the operator to inflate it, ensuring that the airbags are always at a suitable pressure and maintain a good cushioning effect. Attached Figure Description

[0019] Figure 1 A schematic diagram of the overall structure of a pressurizing device for gel membrane production provided by this utility model;

[0020] Figure 2 A schematic diagram of the outer structure of the buffer device of a pressurizing device for gel membrane production provided by this utility model;

[0021] Figure 3 This is a schematic diagram of the longitudinal section structure of a pressure device and buffer device for gel membrane production provided by this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Base; 2. Air compressor; 3. Connecting pipe; 4. Delivery pipe; 5. Buffer device; 501. Outer cylinder; 502. Airbag assembly; 5021. High-pressure airbag; 5022. Medium-pressure airbag; 5023. Low-pressure airbag; 503. Inflation valve; 504. Air pressure sensor; 505. Airflow channel. Detailed Implementation

[0024] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0025] like Figures 1 to 3As shown in the figure, this utility model provides a pressurizing device for gel film production, including an air compressor 2, the output end of which is connected to a buffer device 5. The buffer device 5 includes an outer cylinder 501, inside which an airbag assembly 502 is disposed. When the pressure of the gas supply system increases, it will squeeze the airbag assembly 502, causing the airbag assembly 502 to contract. When the pressure of the gas supply system decreases, the airbag assembly 502 expands due to the internal pressure, thereby ensuring the relative stability of the system pressure. The airbag assembly 502 is composed of multiple sets of interconnected airbags, in which the internal air pressure is arranged in a stepped manner. The outer cylinder 501 is also provided with an airflow channel 505 to facilitate gas flow. One end of the airflow channel 505 is connected to the output end of the air compressor 2, and the other end is connected to a delivery pipe 4 that connects to an external device. The multiple sets of airbags with stepped air pressure form a stepped pressure compensation mechanism. When the system pressure fluctuates, each layer of buffer bags will respond in sequence according to the pre-set pressure threshold, decomposing the originally large single pressure change into multiple small adjustments. The principle is similar to the pressure gradient transition principle of the buffer room in the clean room of the electronics industry, thereby effectively reducing the impact of pressure shock on the system.

[0026] Specifically, the airbag assembly 502 includes a high-pressure airbag 5021, a low-pressure airbag 5023, and a medium-pressure airbag 5022 located between the high-pressure airbag 5021 and the low-pressure airbag 5023. In this embodiment, the pressures of the low-pressure airbag 5023, the medium-pressure airbag 5022, and the high-pressure airbag 5021 are pre-inflated in sequence with a certain gradient, for example, a gradient of 0.2MPa / 0.5MPa / 0.8MPa. This setting allows the airbags at different pressure levels to play different buffering roles against pressure fluctuations of different frequencies and amplitudes.

[0027] In the first embodiment of this solution, the high-pressure airbag 5021, medium-pressure airbag 5022, and low-pressure airbag 5023 are all cylindrical structures. This cylindrical structure includes an outer wall and an inner wall, with a sealed connection between the outer and inner walls, storing the gas within the space between them. In terms of arrangement, the high-pressure airbag 5021, medium-pressure airbag 5022, and low-pressure airbag 5023 are arranged coaxially from the outside to the inside, with the airflow channel 505 located in the middle of the low-pressure airbag 5023. When airflow passes through the airflow channel 505, pressure fluctuations occur in the system, and the airbags at different pressure levels play their respective roles. The low-pressure layer preferentially absorbs minor fluctuations, while the medium and high-pressure layers intervene sequentially. This layered structure effectively prevents a single buffer bag from rupturing due to instantaneous high-pressure impact. For example, the high-frequency pulsations generated by the machinery itself will be preferentially absorbed by the 0.2MPa low-pressure airbag 5023, whose thin-walled elastic structure can deform quickly and adapt rapidly to pressure changes; the mid-frequency fluctuations of vibration generated during transportation will be balanced by the 0.5MPa medium-pressure airbag 5022, whose elasticity and rigidity are moderate, which can avoid resonance and large deformation of the low-pressure airbag 5023; the low-frequency impacts generated during valve switching will be slowly absorbed by the 0.8MPa high-pressure airbag 5021 using its large volume, reducing the peak pressure change and thus protecting the entire system from damage caused by large pressure fluctuations.

[0028] In addition, to facilitate real-time monitoring of pressure changes inside the airbags and timely inflation to ensure the device's effectiveness, three sets of inflation valves 503 and pressure sensors 504 are installed on one side of the outer cylinder 501. These valves are connected to the high-pressure airbag 5021, the medium-pressure airbag 5022, and the low-pressure airbag 5023, respectively. The pressure sensors 504 can sense pressure changes inside the airbags in real time and feed the data back to the control system. When the pressure is lower than the set value, the control system will remind the operator to inflate the airbags to ensure they are always at the appropriate pressure.

[0029] In terms of the overall layout of the device, a base 1 is provided at the bottom of the air compressor 2 to fix the air compressor 2 and the outer cylinder 501. The outer cylinder 501 is located at the bottom of the air compressor 2, thereby reducing the space occupied by the device. A connecting pipe 3 is provided at the output end of the air compressor 2, which is connected to the end of the outer cylinder 501. The gas is transported from the air compressor 2 to the buffer device 5 through the connecting pipe 3. Both ends of the outer cylinder 501 are provided with outwardly extending conical sidewalls at the positions where they connect to the connecting pipe 3 and the conveying pipe 4. This is used to reduce the resistance during airflow, allowing the gas to flow more smoothly in the device and improving the working efficiency of the entire pressurization system.

[0030] In the second specific embodiment, the high-pressure airbag 5021, medium-pressure airbag 5022, and low-pressure airbag 5023 are all spherical and concentrically arranged from the inside to the outside. Compared with the cylindrical structure in the first embodiment, the spherical structure is connected to the mounting base only on one side, making it easier to remove from the mounting base after deflation, thus facilitating the maintenance of the airbags. When the airbags need to be inspected, repaired, or replaced, the spherical structure allows for easier disassembly and installation, reducing maintenance time and difficulty.

[0031] Regarding the material selection for the airbags, the high-pressure airbag 5021, medium-pressure airbag 5022, and low-pressure airbag 5023 can be made of fluororubber. Fluororubber has good corrosion resistance, high-temperature resistance, and sealing properties, which can meet the performance requirements of the airbags in the gel membrane production process. Among them, the high-pressure airbag 5021 and the medium-pressure airbag 5022 are preferably made of aramid fiber and fluororubber composite material. This composite material combines the high strength of aramid fiber, which can further ensure the strength of the airbag sidewall, making the airbag less prone to rupture when subjected to high pressure, thereby improving the stability of the entire pressurization device.

[0032] Working Principle: Before the device is started, the airbags in the airbag assembly 502 are pre-charged to set their pressure. The low-pressure airbag 5023, medium-pressure airbag 5022, and high-pressure airbag 5021 are pre-charged to pressures of 0.2MPa, 0.5MPa, and 0.8MPa respectively, so that each airbag is in a specific initial pressure state. When the air compressor 2 is turned on, it begins to supply gas to the system. At this time, the gas enters the airflow channel 505 of the buffer device 5 through the connecting pipe 3. As the gas is continuously input, the pressure of the gas supply system gradually increases, and it begins to compress the airbag assembly 502. Since each airbag has been pre-charged to a certain pressure, and the pressure is set in a stepped manner, the low-pressure airbag 5023 will be compressed first in the initial stage of pressure increase. Its thin-walled elastic structure can quickly deform and contract to absorb part of the pressure, playing a preliminary buffering role. When the system pressure fluctuates significantly, the medium-pressure airbag 5022, with its moderate elasticity and rigidity, balances part of the pressure and prevents the low-pressure airbag 5023 from deforming drastically. If the system pressure continues to rise sharply, the high-pressure airbag 5021, with its large volume, will slowly absorb the pressure spikes, reducing the peak pressure and gradually stabilizing the system pressure, thus preventing damage to subsequent production equipment and the gel membrane production process caused by a rapid increase in pressure.

[0033] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A pressurizing device for gel film production, comprising an air compressor (2), characterized by, The output end of the air compressor (2) is connected to a buffer device (5). The buffer device (5) includes an outer cylinder (501). An airbag assembly (502) is provided inside the outer cylinder (501). The airbag assembly (502) is composed of multiple sets of airbags that are connected to each other. The air pressure inside the multiple sets of airbags increases sequentially. An airflow channel (505) is provided inside the outer cylinder (501) to facilitate gas flow. One end of the airflow channel (505) is connected to the output end of the air compressor (2), and the other end is connected to a delivery pipe (4) that is connected to an external device.

2. The pressurizing device for producing a gel film according to claim 1, wherein The airbag assembly (502) includes a high-pressure airbag (5021), a low-pressure airbag (5023), and a medium-pressure airbag (5022) located between the high-pressure airbag (5021) and the low-pressure airbag (5023).

3. The pressurizing device for producing a gel film according to claim 2, wherein The high-pressure airbag (5021), medium-pressure airbag (5022), and low-pressure airbag (5023) are all cylindrical structures, each comprising an outer wall and an inner wall, with a sealed connection between the outer and inner walls. The gas is stored between the outer and inner walls. The high-pressure airbag (5021), medium-pressure airbag (5022), and low-pressure airbag (5023) are arranged coaxially from the outside to the inside, and the airflow channel (505) is located in the middle of the low-pressure airbag (5023).

4. The pressurizing device for producing a gel film according to claim 2 or 3, wherein The outer cylinder (501) is provided with three sets of inflation valves (503) that are respectively connected to the high-pressure airbag (5021), the medium-pressure airbag (5022), and the low-pressure airbag (5023).

5. The pressurizing device for producing a gel film according to claim 4, wherein Three sets of air pressure sensors (504) are provided on one side of the outer cylinder (501) and are respectively connected to the high-pressure airbag (5021), the medium-pressure airbag (5022), and the low-pressure airbag (5023).

6. The pressurizing device for producing a gel film according to claim 1, wherein The air compressor (2) is provided with a base (1) at the bottom for fixing the air compressor (2) and the outer cylinder (501).

7. The pressurizing apparatus for producing a gel film according to claim 6, wherein The outer cylinder (501) is located at the bottom of the air compressor (2), and the output end of the air compressor (2) is provided with a connecting pipe (3) that communicates with the end of the outer cylinder (501).

8. The pressurizing device for producing a gel film according to claim 7, wherein The outer cylinder (501) has outwardly extending tapered sidewalls at both ends where it connects to the connecting pipe (3) and the conveying pipe (4).

9. A pressurizing device for gel membrane production as described in claim 2, characterized in that, The high-pressure airbag (5021), medium-pressure airbag (5022), and low-pressure airbag (5023) are all spherical and are arranged concentrically from the inside to the outside.

10. The pressurizing device for producing a gel film according to claim 3 or 9, wherein The high-pressure airbag (5021), medium-pressure airbag (5022), and low-pressure airbag (5023) are all made of fluororubber or aramid fiber and fluororubber composite material.

Images