Composite membrane adsorption small-scale test device

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By designing a small test device for composite film adsorption, the problems of small and medium-sized batch trial production and high-performance production of composite films are solved, film thickness uniformity and heating treatment are achieved, film preparation quality is improved, resources and time are saved, and operations are simplified.

CN222305403UActive Publication Date: 2025-01-07JIANGYIN ANCAN ELECTROCHEM EQUIP

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Patent Information

Application Number: CN202421003499.7
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-05-10
Publication Date: 2025-01-07
Estimated Expiration: 2034-05-10

AI Technical Summary

Technical Problem

During the research and development of composite films, it is difficult for the existing technology to achieve small batch trial production and stable production of high-performance composite films, resulting in frequent laboratory tests and waste of resources.

Method used

A small composite film adsorption test device is designed, including a vacuum adsorption film forming device, a film scraping device and a heating and drying device. The uniform adsorption and heating treatment of the slurry are achieved through a vacuum adsorption metering tank and a slurry adsorption net to ensure uniform film thickness. and repeatability of experiments, and provides scraping rod height adjustment and vacuum heating.

Benefits of technology

The uniform adsorption and heating treatment of the composite film are realized, the quality of film preparation is improved, the experimental development time and material cost are saved, the wet film blisters are avoided, and the operation process is simplified.

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Abstract

The utility model relates to the technical field of composite membrane preparation, in particular to a composite membrane adsorption small-scale test device which comprises a vacuum adsorption membrane forming device used for forming a composite membrane, and the vacuum adsorption membrane forming device comprises a slurry pool, an adsorption tank arranged in the slurry pool and a vacuum adsorption metering tank connected to the lower portion of the slurry pool. The interior of the slurry pool is composed of an upper slurry chamber, a middle adsorption tank mounting chamber and a lower discharging chamber which are sequentially adjacent from top to bottom, the vacuum adsorption metering tank is connected to the lower discharging chamber of the slurry pool, and the adsorption tank is mounted in the middle adsorption tank mounting chamber; a slurry adsorption net for adsorbing slurry and allowing a solvent in the slurry to penetrate through is horizontally arranged on the adsorption tank. The device is convenient for small-batch trial production of the composite film, and is good in adaptability and high in film forming quality.

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Description

Technical Field

[0001] The utility model relates to the technical field of composite membrane preparation, in particular to a composite membrane adsorption small test device. Background Art

[0002] Composite membrane is a permeable physical diaphragm, mainly used for sodium chloride electrolysis in the chlor-alkali industry. Due to its strong pollution resistance, composite membrane electrolysis is seen as a good way to solve the resource utilization of industrial by-product salt sodium chloride.

[0003] As the electrolysis industry continues to increase its requirements for composite membrane performance, the development of high-performance composite membranes suitable for different application scenarios is an urgent issue faced by technicians in this field. In order for the composite membrane to meet the ultimate requirements of mass production, it is necessary to go through many trials, continuous testing and improvements in the laboratory to form a relatively stable production process. Utility Model Content

[0004] In order to solve the above problems, the utility model proposes a composite membrane adsorption test device, which is intended to facilitate small-batch trial production of composite membranes and improve the manufacturing quality of composite membranes. The specific technical solution is as follows:

[0005] A composite membrane adsorption pilot test device includes a vacuum adsorption film-forming device for forming a composite membrane, the vacuum adsorption film-forming device includes a slurry pool, an adsorption tank arranged inside the slurry pool, and a vacuum adsorption metering tank connected below the slurry pool. The interior of the slurry pool is composed of an upper slurry chamber, a middle adsorption tank installation chamber and a lower discharge chamber adjacent to each other in sequence from top to bottom. The vacuum adsorption metering tank is connected to the lower discharge chamber of the slurry pool, the adsorption tank is installed in the middle adsorption tank installation chamber, and a slurry adsorption net for adsorbing slurry and allowing the solvent in the slurry to pass through is horizontally arranged on the adsorption tank.

[0006] Preferably, the bottom shape of the lower discharge chamber adopts a funnel bottom shape.

[0007] The utility model is a composite film adsorption test device which also includes a film scraping device for forming a flat composite film. The film scraping device includes a film scraping moving ruler and a film scraping rod connected below the film scraping moving ruler and arranged horizontally.

[0008] Preferably, the scraper device is provided with a scraper rod height adjuster for adjusting the height position of the scraper rod, the scraper rod height adjuster includes a pair of adjustment screws arranged at intervals and connected between the scraper movable ruler and the scraper rod, the scraper movable ruler is provided with a pair of screw mounting holes, the lower ends of the pair of adjusting screws are respectively fixedly connected to the scraper rod, and the upper ends of the pair of adjusting screws are correspondingly inserted into the pair of screw mounting holes on the scraper movable ruler and then fixed by nuts.

[0009] Wherein, the nut comprises an upper nut and a lower nut which are threadedly connected to the adjusting screw and respectively abut against the upper side surface and the lower side surface of the film scraping rod.

[0010] Preferably, a pair of height gauges for measuring the height position of the scraping rod in the up and down directions are also provided on the scraping moving ruler.

[0011] Preferably, the altimeter is a dial indicator.

[0012] The utility model discloses a composite membrane adsorption test device, which also includes a heating device for heating and drying the composite membrane. The heating device includes a heating cover and a heating element arranged on the inner top surface of the heating cover.

[0013] Preferably, the heating element is an electric heating wire heater or an infrared carbon fiber heater.

[0014] In the utility model, the upper end of the slurry pool is open, so that a film scraping device or a heating device can be easily installed.

[0015] Wherein, when the film scraping device is working, the film scraping movable ruler thereof moves to be close to the upper end surface of the slurry pool, and the film scraping rod is parallel to the slurry adsorption net on the adsorption tank.

[0016] Wherein, when the heating device is working, the heating cover covers the upper opening of the slurry pool.

[0017] In the utility model, the bottom of the peripheral edge of the adsorption tank and the bottom of the peripheral edge of the inner side of the middle adsorption tank installation chamber on the slurry pool are sealed and connected via a sealing gasket.

[0018] Preferably, the adsorption tank is fixed to the middle adsorption tank installation chamber of the slurry pool by means of a sealing gasket, a stud and a nut.

[0019] In the utility model, the upper end of the vacuum adsorption metering tank is connected to the lower discharge chamber of the slurry pool through a vacuum adsorption valve; the vacuum adsorption metering tank is externally connected to a vacuum system through a vacuum pipeline.

[0020] In the utility model, a liquid discharge valve is arranged at the lower end of the vacuum adsorption metering tank, and a liquid collecting bucket is movably arranged below the liquid discharge valve.

[0021] In the utility model, the slurry pool is overheadly arranged on a bracket.

[0022] The adsorption tank in the utility model has no bottom, which is convenient for the liquid in the slurry to penetrate. Four support plates are welded in the adsorption tank, and a diamond net as a slurry adsorption net is welded on the support plate to ensure the flatness of the diamond net. Four studs are welded on the lower sealing surface of the adsorption tank. After the studs pass through the sealing gasket and the bottom of the slurry pool, the adsorption tank is fastened to the slurry pool with nuts to ensure the seal between the adsorption tank and the slurry pool.

[0023] The method of using the utility model is as follows:

[0024] Place the adsorption tank in the slurry pool and seal it with the slurry pool through sealing gaskets, studs and nuts; close the vacuum adsorption valve and the drain valve; the slurry enters the slurry pool through the slurry holes on the slurry pool, and slide the scraper to make the slurry evenly distributed on the adsorption tank; turn on the vacuum system and the vacuum adsorption valve. As the vacuum degree in the vacuum adsorption metering tank increases, the solid material in the slurry gradually deposits on the adsorption tank, and the solvent in the slurry enters the vacuum adsorption metering tank through the adsorption tank. Observe the state and volume of the slurry in the vacuum adsorption metering tank to determine whether the adsorption is successful. If the adsorption is successful, continue to adsorb until film is formed. If not, collect the material in the vacuum adsorption metering tank through the liquid collecting bucket and re-mix and stir it with the material on the adsorption tank, and adsorb it again to avoid wasting materials. After the adsorption is completed, the vacuum system is turned off, the liquid volume in the vacuum adsorption metering tank is read, and then the liquid release valve is opened to completely release the liquid for analysis. At the same time, the scraping device is removed, and the heating treatment device is placed on the slurry pool. The composite membrane is heated and dried under a vacuum state to avoid problems such as membrane blistering caused by the inability of internal water vapor to evaporate due to the drying of the outer layer of the wet film.

[0025] The beneficial effects of the utility model are:

[0026] First, in the composite membrane adsorption test device of the utility model, the slurry adsorption net on the adsorption tank is in a horizontal fixed position, which can ensure the uniformity of the composite membrane thickness and good repeatability of the experiment.

[0027] Secondly, the utility model provides a composite membrane adsorption test device, which is provided with a membrane scraping device with an adjustable membrane scraping rod height, and can control or change the amount of membrane-making slurry, thereby producing membranes of different thicknesses.

[0028] Third, the utility model provides a composite membrane adsorption test device, which can judge whether the adsorption is successful by the state and volume of the slurry in the vacuum adsorption metering tank. Even if the adsorption is unsuccessful, a second adsorption can be performed again, which will not cause waste of the slurry and save experimental development time and material costs.

[0029] Fourthly, in the composite membrane adsorption pilot device of the utility model, after adsorption, the slurry will not remain in the device, which is beneficial to material balance.

[0030] Fifth, the utility model is a composite membrane adsorption test device, which heats the composite membrane under vacuum, thereby avoiding the problem of membrane blistering caused by the inner water vapor being unable to volatilize due to the drying of the outer layer of the wet membrane.

[0031] Sixth, the utility model provides a composite membrane adsorption test device, in which composite membrane preparation and heating and drying are all carried out in one device, and the operation is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the disassembly of a composite membrane adsorption test device of the utility model;

[0033] Figure 2 It is a structural schematic diagram of a composite membrane adsorption test device provided with a membrane scraping device according to the utility model;

[0034] Figure 3 yes Figure 1 and Figure 2 A schematic diagram of the structure of the slurry tank;

[0035] Figure 4 It is a structural schematic diagram of a composite membrane adsorption test device provided with a heating device in the utility model;

[0036] Figure 5 yes Figure 1 A partial enlarged schematic diagram of the connection structure between the slurry pool and the adsorption tank;

[0037] Figure 6 It is a structural schematic diagram of the adsorption tank;

[0038] Figure 7 Yes Figure 1 The schematic diagram of the structure after the slurry adsorption net on the top of the adsorption tank is removed.

[0039] In the figure: 1. scraper moving ruler, 2. adjusting screw, 3. height gauge, 4. scraper rod, 5. slurry pool, 5.1. upper slurry chamber, 5.2. middle adsorption tank installation chamber, 5.3. lower discharge chamber, 6. slurry adsorption net, 7. adsorption tank, 8. stud, 9. vacuum adsorption valve, 10. vacuum adsorption metering tank, 11. drain valve, 12. bracket, 13. heating cover, 14. heating element, 15. nut, 16. liquid collecting barrel, 17. sealing gasket. DETAILED DESCRIPTION

[0040] The following is a further description of the specific implementation of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0041] like Figures 1 to 7 The figure shows an embodiment of a composite membrane adsorption pilot device of the utility model, including a vacuum adsorption film-forming device for forming a composite membrane, the vacuum adsorption film-forming device including a slurry pool 5, an adsorption tank 7 arranged inside the slurry pool 5, and a vacuum adsorption metering tank 10 connected to the bottom of the slurry pool 5. The interior of the slurry pool 5 is composed of an upper slurry chamber 5.1, a middle adsorption tank installation chamber 5.2 and a lower discharge chamber 5.3 which are adjacent to each other in sequence from top to bottom. The vacuum adsorption metering tank 10 is connected to the lower discharge chamber 5.3 of the slurry pool 5, the adsorption tank 7 is installed in the middle adsorption tank installation chamber 5.2, and a slurry adsorption net 6 for adsorbing slurry and allowing the solvent in the slurry to pass through is horizontally arranged on the adsorption tank 7.

[0042] Preferably, the bottom shape of the lower discharge chamber 5.3 is a funnel bottom shape.

[0043] The composite film adsorption test device of this embodiment also includes a film scraping device for forming a flat composite film, and the film scraping device includes a film scraping moving ruler 1 and a film scraping rod 4 connected below the film scraping moving ruler 1 and arranged horizontally.

[0044] Preferably, the scraper device is provided with a scraper rod height adjuster for adjusting the height position of the scraper rod 4, the scraper rod height adjuster includes a pair of adjustment screws 2 connected between the scraper movable ruler 1 and the scraper rod 4, the scraper movable ruler 1 is provided with a pair of screw mounting holes, the lower ends of the pair of adjusting screws 2 are respectively fixedly connected to the scraper rod 4, and the upper ends of the pair of adjusting screws 2 are correspondingly inserted into the pair of screw mounting holes on the scraper movable ruler 1 and fixed by nuts 15.

[0045] The nut 15 includes an upper nut and a lower nut which are threadedly connected to the adjusting screw 2 and respectively abut against the upper side and the lower side of the film scraping rod 4 .

[0046] Preferably, a pair of height measuring devices 3 for measuring the height position of the film scraping rod 4 in the up and down directions are also provided on the film scraping moving ruler 1 .

[0047] Preferably, the altimeter 3 is a dial indicator.

[0048] The composite membrane adsorption pilot device of this embodiment further includes a heating device for heating and drying the composite membrane. The heating device includes a heating cover 13 and a heating element 14 arranged on the inner top surface of the heating cover 13 .

[0049] Preferably, the heating element 14 is an electric heating wire heater or an infrared carbon fiber heater.

[0050] In this embodiment, the upper end of the slurry pool 5 is open, which can facilitate the installation of a scraping device or a heating device.

[0051] When the film scraping device is working, the film scraping movable ruler 1 moves to abut against the upper end surface of the slurry pool 5 , and the film scraping rod 4 is parallel to the slurry adsorption net 6 on the adsorption tank 7 .

[0052] When the heating device is working, the heating cover 13 covers the upper opening of the slurry pool 5 .

[0053] In this embodiment, the bottom of the peripheral edge of the adsorption tank 7 and the bottom of the peripheral edge of the middle adsorption tank installation chamber 5.2 on the slurry pool 5 are sealed and connected via a sealing gasket 17.

[0054] Preferably, the adsorption tank 7 is fixed to the middle adsorption tank installation chamber 5.2 of the slurry pool 5 by means of a sealing gasket 17, a stud 8 and a nut.

[0055] In this embodiment, the upper end of the vacuum adsorption metering tank 10 is connected to the lower discharge chamber 5.3 of the slurry pool 5 through a vacuum adsorption valve 9; the vacuum adsorption metering tank 10 is connected to an external vacuum system through a vacuum pipeline.

[0056] In this embodiment, a liquid discharge valve 11 is disposed at the lower end of the vacuum adsorption metering tank 10 , and a liquid collecting barrel 16 is movably disposed below the liquid discharge valve 11 .

[0057] In this embodiment, the slurry pool 5 is suspended on a bracket 12 .

[0058] The adsorption tank 7 in this embodiment has no bottom, which is convenient for the liquid in the slurry to penetrate. Four support plates are welded in the adsorption tank 7, and a diamond mesh serving as the slurry adsorption net 6 is welded on the support plate to ensure the flatness of the diamond mesh. Four studs 8 are welded on the lower sealing surface of the adsorption tank 7. After the studs 8 pass through the sealing gasket 17 and the bottom of the slurry pool 5, the adsorption tank 7 is fastened to the slurry pool 5 with nuts to ensure the seal between the adsorption tank 7 and the slurry pool 5.

[0059] The method of using this embodiment is as follows:

[0060] Place the adsorption tank 7 in the slurry pool 5, and seal it with the slurry pool 5 through the sealing gasket 17, the stud 8 and the nut; close the vacuum adsorption valve 1 and the drain valve 11; the slurry enters the slurry pool 5 through the 6 slurry holes on the slurry pool 5, and slides the scraper moving ruler 1 to make the slurry evenly distributed on the adsorption tank 7; turn on the vacuum system, open the vacuum adsorption valve 9, and as the vacuum degree in the vacuum adsorption metering tank increases, the solid material in the slurry gradually deposits on the adsorption tank 7, and the solvent in the slurry enters the vacuum adsorption metering tank 10 through the adsorption tank 7. Observe the state and volume of the slurry in the vacuum adsorption metering tank 10 to determine whether the adsorption is successful. If the adsorption is successful, continue to adsorb until the film is formed. If not, collect the material in the vacuum adsorption metering tank 10 through the liquid collecting bucket and remix and stir it with the material on the adsorption tank 7, and adsorb it again without wasting materials. After the adsorption is completed, the vacuum system is turned off, the liquid volume in the vacuum adsorption metering tank 10 is read, and then the liquid release valve 11 is opened to completely release the liquid for analysis. At the same time, the scraping device is removed, and the heating treatment device is placed on the slurry pool 5. The composite membrane 6 is heated and dried under a vacuum state to avoid problems such as membrane blistering caused by the inability of internal water vapor to evaporate due to the drying of the outer layer of the wet film.

[0061] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A composite membrane adsorption test device, characterized in that: It comprises a vacuum adsorption film-forming device for forming a composite film, the vacuum adsorption film-forming device comprises a slurry pool, an adsorption tank arranged inside the slurry pool, and a vacuum adsorption metering tank connected to the bottom of the slurry pool. The interior of the slurry pool is composed of an upper slurry chamber, a middle adsorption tank installation chamber and a lower discharge chamber which are adjacent to each other in sequence from top to bottom. The vacuum adsorption metering tank is connected to the lower discharge chamber of the slurry pool, the adsorption tank is installed in the middle adsorption tank installation chamber, and a slurry adsorption net for adsorbing slurry and allowing the solvent in the slurry to pass through is horizontally arranged on the adsorption tank.

2. A composite membrane adsorption test device according to claim 1, characterized in that: The invention also comprises a film scraping device for forming a flat composite film, wherein the film scraping device comprises a film scraping moving ruler and a film scraping rod connected below the film scraping moving ruler and arranged horizontally.

3. A composite membrane adsorption test device according to claim 2, characterized in that: The scraper device is provided with a scraper rod height adjuster for adjusting the height position of the scraper rod, the scraper rod height adjuster includes a pair of adjustment screws arranged at intervals and connected between the scraper moving ruler and the scraper rod, the scraper moving ruler is provided with a pair of screw mounting holes, the lower ends of the pair of adjusting screws are respectively fixedly connected to the scraper rod, and the upper ends of the pair of adjusting screws are correspondingly inserted into the pair of screw mounting holes on the scraper moving ruler and then fixed by nuts.

4. A composite membrane adsorption test device according to claim 3, characterized in that: A pair of height measuring devices for measuring the height position of the film scraping rod in the up and down directions are also arranged on the film scraping moving ruler.

5. A composite membrane adsorption test device according to claim 4, characterized in that: The altimeter is a dial indicator.

6. A composite membrane adsorption test device according to claim 1, characterized in that: The invention also comprises a heating device for heating and drying the composite film, wherein the heating device comprises a heating cover and a heating element arranged on the inner top surface of the heating cover.

7. A composite membrane adsorption test device according to claim 1, characterized in that: The bottom of the peripheral edge of the adsorption tank and the bottom of the peripheral edge of the inner side of the middle adsorption tank installation chamber on the slurry pool are sealed and connected via a sealing gasket.

8. A composite membrane adsorption test device according to claim 1, characterized in that: The adsorption tank is fixed on the middle adsorption tank installation chamber of the slurry pool through a sealing gasket, a stud and a nut.

9. A composite membrane adsorption test device according to claim 1, characterized in that: The upper end of the vacuum adsorption metering tank is connected to the lower discharge chamber of the slurry pool through a vacuum adsorption valve; the vacuum adsorption metering tank is connected to an external vacuum system through a vacuum pipeline.

10. A composite membrane adsorption test device according to claim 9, characterized in that: A liquid discharge valve is arranged at the lower end of the vacuum adsorption metering tank, and a liquid collecting bucket is movably arranged below the liquid discharge valve.