Concentration device with nanofiltration membrane filtering mechanism

Abstract

The utility model discloses a concentration device with a nanofiltration membrane filtering mechanism, which belongs to the technical field of nanofiltration membrane concentration devices, and comprises an outer barrel, an upper cover, a stirring pressurizing mechanism, a pressurizing air pump, a nanofiltration membrane filtering mechanism, a nanofiltration membrane filtering mechanism and a nanofiltration membrane filtering mechanism, the air inlet is hermetically connected with the air inlet through an air delivery pipe. The technical key points are as follows: a stock solution is filtered and concentrated by an inner filter cartridge and a bottom filter cover, in the filtering and concentrating process, a driving motor in a stirring and pressurizing mechanism can drive a pressurizing paddle assembly to rotate and extrude the stock solution to flow downwards, and meanwhile, a pressurizing air pump works to pump air into the device, so that the pressure borne by the stock solution in the inner filter cartridge can be remarkably increased; in addition, when the pressurization paddle assembly rotates, the adhesion objects on the inner wall of the inner filter cylinder can be scraped off with high efficiency, interference of external equipment is not needed, and the device is simple, efficient and free of noise.

Description

Technical Field

[0001] This utility model relates to the technical field of nanofiltration membrane concentration devices, specifically a concentration device with a nanofiltration membrane filtration mechanism. Background Technology

[0002] Nanofiltration membrane concentration devices, also known as nanofiltration membrane concentration separation equipment, are advanced membrane separation technology devices mainly used for the concentration and separation of solutions. The working principle of a nanofiltration membrane concentration device is that, driven by a pressure difference, small molecules (such as water and some ions) in the solution pass through the nanofiltration membrane, while large molecules (such as organic matter and polymers) are retained, thereby achieving solution concentration and separation.

[0003] Utility model patent CN220294446U discloses a nanofiltration membrane concentration device. It uses a vibrator to vibrate the outer cylinder, which drives the nanofiltration membrane assembly in the inner cavity to vibrate synchronously, making it easier to shake off the substances attached to the surface of the nanofiltration membrane. At the same time, the motor drives the rotating shaft, which drives the driven conical wheel to mesh with the driven conical wheel and drive the drive shaft to rotate. This, in turn, stirs the raw liquid in the nanofiltration membrane assembly through the prisms on multiple sets of stirring rods, improving the efficiency of the raw liquid passing through the nanofiltration membrane assembly and reducing the speed at which substances in the raw liquid adhere to the nanofiltration membrane, thus reducing the rate of micropore blockage of the nanofiltration membrane and improving the filtration efficiency of the raw liquid.

[0004] Although the above-mentioned device can increase the filtration speed by stirring the raw liquid, it still mainly relies on the gravity of the liquid itself for permeation filtration. This method makes the filtration speed relatively limited, and the filtration speed is slower the more concentrated the liquid. In addition, the device relies on an external vibrator to vibrate the internal nanofiltration membrane to shake off the substances attached to its surface. However, this method will generate a lot of noise during use and is also prone to loosening of the overall connection of the device. Most importantly, for highly viscous substances, due to their light weight, they usually cannot be easily shaken off. Therefore, in order to address the above problems, a concentration device with a nanofiltration membrane filtration mechanism is proposed. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a concentration device with a nanofiltration membrane filtration mechanism. This nanofiltration membrane concentration device filters and concentrates the raw liquid through an internal inner filter cartridge and a bottom filter cover. During the filtration and concentration process, the drive motor in the agitation and pressurization mechanism can drive the pressurization paddle assembly to rotate, squeezing the raw liquid downwards. At the same time, the pressurization air pump works to pump air into the device. The above measures can significantly increase the pressure on the raw liquid in the inner filter cartridge and significantly improve the filtration speed. In addition, when the pressurization paddle assembly rotates, it can efficiently scrape off the adhering substances on the inner wall of the inner filter cartridge without relying on the intervention of external equipment. This solves the technical problems of existing technologies that usually rely mainly on the gravity of the liquid itself for permeation filtration, resulting in a relatively limited filtration speed, and the relatively inefficient method of cleaning the internal nanofiltration membrane by relying on an external vibrator.

[0006] The technical solution adopted by the embodiments of this application to solve its technical problem is:

[0007] A concentration device with a nanofiltration membrane filtration mechanism includes an outer barrel containing an inner filter cylinder. A bottom filter cover is connected to the bottom of the inner filter cylinder. An upper cover is placed on the inner filter cylinder and has an air inlet. An agitation and pressurization mechanism is located inside the inner filter cylinder. A pressurization pump is connected to the air inlet in a sealed manner through an air supply pipe. The agitation and pressurization mechanism includes a central connecting shaft and a drive motor mounted on the upper cover. Several sets of pressurization paddle assemblies are fixedly mounted on the central connecting shaft.

[0008] With the above-described structure, the raw liquid is filtered and concentrated using an inner filter cartridge and a bottom filter cover. During the filtration and concentration process, the drive motor in the agitation and pressurization mechanism drives the pressurization paddle assembly to rotate, squeezing the raw liquid downwards. At the same time, the pressurization air pump pumps air into the device. The combined effect of these measures can significantly increase the pressure on the raw liquid inside the inner filter cartridge, thus significantly improving the filtration speed. In addition, when the pressurization paddle assembly rotates, it can efficiently scrape off the adhering substances on the inner wall of the inner filter cartridge without relying on external equipment, making it simple, efficient, and noiseless.

[0009] In one possible implementation, the booster propeller assembly includes a collar, on the outer wall of which propeller blades are fixedly arranged in a circumferential array, and the upper end face of the propeller blades is chamfered.

[0010] With the above-mentioned structure, the drive motor drives the central shaft to rotate, which in turn drives the paddle to rotate, applying downward pressure to the raw liquid and accelerating its filtration. In addition, the beveled edge design can reduce the impact of the paddle on the raw liquid and prevent the raw liquid from splashing.

[0011] In one possible implementation, the blade end is fixedly connected to an inclined scraper plate that can fit against the inner wall of the inner filter cartridge, and the upper end of the scraper plate is beveled.

[0012] With the above-described structure, the scraper plate can rotate along with the blades, thus scraping the inner wall of the inner filter cartridge. Due to its inclined design, the scraped-off debris will fall diagonally downwards.

[0013] In one possible implementation, the inner filter cartridge has a plurality of side filter ports arranged in a circumferential array, and the inner filter cartridge is wrapped with a side nanofiltration membrane layer that can cover the side filter ports.

[0014] With the above-described structure, the original solution can come into contact with the side nanofiltration membrane layer through the side filter port, allowing small molecules to be discharged through the side nanofiltration membrane layer, thus achieving the function of filtration and concentration.

[0015] In one possible implementation, the bottom filter cover includes a funnel-shaped cover plate and a funnel-shaped base connected to the bottom end of the inner filter cylinder, with a bottom nanofiltration membrane layer sandwiched between the funnel-shaped cover plate and the funnel-shaped base.

[0016] With the above-described structure, the original solution can pass through the funnel-shaped cover plate and come into contact with the bottom nanofiltration membrane layer, allowing small molecules to be discharged through the side nanofiltration membrane layer and the funnel-shaped base, thus achieving the function of filtration and concentration.

[0017] In one possible implementation, the funnel-shaped cover and the funnel-shaped base are each provided with several corresponding through holes, and the funnel-shaped base is provided with a connected outlet for the concentrate in the middle. In addition, the bottom nanofiltration membrane layer is provided with a through hole in the middle with the same diameter as the outlet for the concentrate.

[0018] With the above-described structure, the through-holes allow the raw solution to directly contact the bottom nanofiltration membrane layer. In addition, the concentrated raw solution is discharged from the concentrated solution outlet after passing through the through-holes in the middle of the bottom nanofiltration membrane layer.

[0019] In one possible implementation, the bottom of the outer barrel is fixedly provided with a plurality of inner barrel support plates arranged in a circumferential array. The upper surface of the inner barrel support plates can fit tightly against the bottom filter cover. In addition, there is a gap between adjacent inner barrel support plates.

[0020] With the above-mentioned structural form, the inner cylinder support plate can support and fix the inner filter cylinder, while the gap between the inner cylinder support plates provides the necessary structural basis for the passage of permeate.

[0021] In one possible implementation, the bottom side of the outer barrel is provided with an outlet for the permeate flowing into the barrel, and the top cover is provided with an inlet for the liquid flowing into the interior.

[0022] The above-described structure allows the filtered permeate to be discharged from the permeate outlet, while the inlet provides the necessary structural basis for the addition of the original solution.

[0023] In summary, this utility model has the following beneficial technical effects:

[0024] The inner filter cartridge and bottom filter cover are used to filter and concentrate the raw liquid. During the filtration and concentration process, the drive motor in the stirring and pressurizing mechanism can drive the pressurizing paddle assembly to rotate, squeezing the raw liquid downward. At the same time, the pressurizing air pump works to pump air into the device. The combined effect of the above measures can significantly increase the pressure on the raw liquid in the inner filter cartridge and significantly improve the filtration speed.

[0025] In addition, when the booster paddle assembly rotates, it can efficiently scrape off the adhering substances on the inner wall of the inner filter cartridge without relying on external equipment, making it simple, efficient and noiseless. Attached Figure Description

[0026] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0027] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0028] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0029] Figure 3 This is a schematic diagram of the stirring and pressurizing mechanism of this utility model;

[0030] Figure 4 This is a schematic diagram of the booster propeller assembly structure of this utility model;

[0031] Figure 5 This is a schematic diagram of the filtration and concentration structure of this utility model.

[0032] In the diagram: 1. Outer barrel; 11. Permeate outlet; 12. Inner cylinder support plate; 2. Inner filter cylinder; 21. Side filter port; 22. Side nanofiltration membrane layer; 3. Bottom filter cover; 31. Funnel-shaped cover plate; 32. Funnel-shaped base; 321. Concentrate outlet; 33. Bottom nanofiltration membrane layer; 4. Top cover; 41. Air inlet; 42. Liquid inlet; 5. Agitating and pressurizing mechanism; 51. Central connecting shaft; 52. Pressurizing paddle assembly; 521. Collar ring; 522. Paddle blade; 523. Bevel; 524. Scraper; 525. Bevel; 53. Drive motor; 6. Pressurizing air pump; 61. Air delivery pipe. Detailed Implementation

[0033] The technical solution in this application embodiment is to solve the problems mentioned in the background art, and the overall idea is as follows:

[0034] like Figure 1 - Figure 3As shown, this embodiment provides a concentration device with a nanofiltration membrane filtration mechanism, including an outer barrel 1, an inner filter cylinder 2 inside, a bottom filter cover 3 connected to the bottom of the inner filter cylinder 2, an upper cover 4 covering the inner filter cylinder 2, an air inlet 41 on the upper cover, a stirring and pressurizing mechanism 5 located inside the inner filter cylinder 2, and a pressurizing pump 6 sealed to the air inlet 41 via an air supply pipe 61. The stirring and pressurizing mechanism 5 includes a central connecting shaft 51 and a drive motor 53 mounted on the upper cover 4. Several sets of pressurizing paddle assemblies 52 are fixedly mounted on the central connecting shaft 51. The structure uses an inner filter cartridge 2 and a bottom filter cover 3 to filter and concentrate the raw liquid. During the filtration and concentration process, the drive motor 53 in the agitation and pressurization mechanism 5 can drive the pressurization paddle assembly 52 to rotate, squeezing the raw liquid downwards. At the same time, the pressurization air pump 6 works to pump air into the device. The combined effect of the above measures can significantly increase the pressure on the raw liquid in the inner filter cartridge 2 and significantly improve the filtration speed. In addition, when the pressurization paddle assembly 52 rotates, it can efficiently scrape off the adhering substances on the inner wall of the inner filter cartridge 2 without relying on the intervention of external equipment. It is simple, efficient and noiseless.

[0035] like Figure 4 As shown, the booster propeller assembly 52 includes a collar 521, and the outer wall of the collar 521 is fixed with propeller blades 522 arranged in a circumferential array. The upper end face of the propeller blades 522 is machined with a chamfer 523. Through the above structure, the drive motor 53 drives the central shaft 51 to rotate, thereby driving the propeller blades 522 to rotate, applying downward pressure to the raw liquid and accelerating its filtration. In addition, the chamfer 523 can reduce the impact of the propeller blades 522 on the raw liquid and prevent the raw liquid from splashing.

[0036] In addition, a scraper 524 is fixedly connected to the end of the blade 522, which is inclined and can fit against the inner wall of the inner filter cylinder 2. The upper end of the scraper 524 is machined with a bevel 525. With the above structure, when the blade 522 rotates, the scraper 524 can rotate with it and scrape the inner wall of the inner filter cylinder 2. And because of its inclined setting, the scraped-off attachments will fall obliquely downwards when they fall.

[0037] like Figure 5 As shown, the inner filter cartridge 2 has several side filter ports 21 arranged in a circular array, and the inner filter cartridge 2 is wrapped with a side nanofiltration membrane layer 22 that can cover the side filter ports 21. Through the above structure, the raw liquid can come into contact with the side nanofiltration membrane layer 22 through the side filter ports 21, so that small molecules in it can be discharged through the side nanofiltration membrane layer 22, thereby playing the role of filtration and concentration.

[0038] In addition, the bottom filter cover 3 includes a funnel-shaped cover plate 31 and a funnel-shaped base 32 connected to the bottom end of the inner filter cylinder 2. A bottom nanofiltration membrane layer 33 is sandwiched between the funnel-shaped cover plate 31 and the funnel-shaped base 32. Through the above structure, the raw liquid can pass through the funnel-shaped cover plate 31 and come into contact with the bottom nanofiltration membrane layer 33, so that small molecules in it can be discharged through the side nanofiltration membrane layer 22 and the funnel-shaped base 32, thereby playing the role of filtration and concentration.

[0039] The funnel-shaped cover plate 31 and the funnel-shaped base 32 are provided with several corresponding through holes, and the funnel-shaped base 32 is provided with a connected concentrate outlet 321 in the middle. In addition, the bottom nanofiltration membrane layer 33 is provided with a through hole in the middle with the same diameter as the concentrate outlet 321. Through the above structure, the through hole allows the raw liquid to directly pass through and contact the bottom nanofiltration membrane layer 33. Furthermore, the concentrated raw liquid is discharged from the concentrate outlet 321 after passing through the through hole in the middle of the bottom nanofiltration membrane layer 33.

[0040] like Figure 5 As shown, the bottom of the outer barrel 1 is fixedly provided with several inner barrel support plates 12 arranged in a circular array. The upper end face of the inner barrel support plate 12 can be tightly fitted with the bottom filter cover 3. In addition, there are gaps between adjacent inner barrel support plates 12. Through the above structure, the inner barrel support plates 12 can support and fix the inner filter cylinder 2, while the gaps between the inner barrel support plates 12 provide the necessary structural basis for the passage of permeate.

[0041] like Figure 1 , Figure 5 As shown, the bottom side of the outer barrel 1 is provided with a permeate outlet 11 that connects to the inside of the barrel, and the upper cover 4 is provided with a liquid inlet 42 that connects to the inside. Through the above structure, the filtered permeate can be discharged from the permeate outlet 11, while the liquid inlet 42 provides the necessary structural basis for the addition of the original liquid.

[0042] The working principle and usage process of this utility model:

[0043] The inner filter cartridge 2 and the bottom filter cover 3 are used to filter and concentrate the raw liquid. During the filtration and concentration process, the drive motor 53 in the stirring and pressurizing mechanism 5 can drive the pressurizing paddle assembly 52 to rotate. When the paddle 522 in the pressurizing paddle assembly 52 rotates, it will squeeze the raw liquid to flow downward. At the same time, the pressurizing air pump 6 works to pump air into the device. The combined effect of the above measures can significantly increase the pressure on the raw liquid in the inner filter cartridge 2 and significantly improve the filtration speed.

[0044] In addition, when the blade 522 rotates, the scraper 524 can rotate along with it, which can scrape the inner wall of the inner filter cartridge 2. Due to its inclined setting, the scraped-off deposits will fall diagonally downwards when they fall, so it can scrape off the deposits on the inner wall of the inner filter cartridge 2 more efficiently without the need for external equipment intervention. It is simple, efficient and noiseless.

[0045] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A concentration device having a nanofiltration membrane filtration mechanism, characterized by, Include: The outer barrel (1) is internally provided with an inner filter cylinder (2), and the bottom of the inner filter cylinder (2) is connected with a bottom filter cover (3); The upper cover (4) is provided on the inner filter cylinder (2), and an air inlet (41) is provided thereon; The stirring supercharging mechanism (5) is arranged in the inner filter cylinder (2); The supercharging gas pump (6) is in sealed connection with the air inlet (41) through the gas conveying pipe (61); Wherein, the stirring supercharging mechanism (5) includes a middle connecting shaft (51) and a driving motor (53) arranged on the upper cover (4), and a plurality of groups of supercharging paddle assemblies (52) are fixedly arranged on the middle connecting shaft (51).

2. The concentration device with nanofiltration membrane filtration mechanism according to claim 1, characterized in that: The supercharging paddle assembly (52) includes a sleeve ring (521), and a plurality of paddle blades (522) arranged in a circumferential array are fixedly arranged on the outer wall of the sleeve ring (521), and an inverted edge (523) is processed on the upper end surface of the paddle blade (522).

3. The concentration device with nanofiltration membrane filtration mechanism according to claim 2, characterized in that: The end of the paddle blade (522) is fixedly connected with a scraping plate (524) which is arranged obliquely and can be attached to the inner wall of the inner filter cylinder (2), and a bevel (525) is processed on the upper end of the scraping plate (524).

4. The concentration device having a nanofiltration membrane filtration mechanism according to claim 1, characterized in that: A plurality of side filter openings (21) arranged in a circumferential array are formed on the inner filter cylinder (2), and the inner filter cylinder (2) is wrapped with a side nanofiltration membrane layer (22) which can cover the side filter openings (21).

5. The concentration device having a nanofiltration membrane filtration mechanism according to claim 1, characterized in that: The bottom filter cover (3) includes a funnel-shaped cover plate (31) and a funnel-shaped base (32) connected with the bottom end of the inner filter cylinder (2), and a bottom nanofiltration membrane layer (33) is arranged between the funnel-shaped cover plate (31) and the funnel-shaped base (32).

6. The concentration device having a nanofiltration membrane filtration mechanism according to claim 5, characterized in that: A plurality of through holes corresponding in up and down are formed on the funnel-shaped cover plate (31) and the funnel-shaped base (32), and a concentrated liquid discharge port (321) is arranged in the middle of the funnel-shaped base (32), and a through hole with the same caliber as the concentrated liquid discharge port (321) is formed in the middle of the bottom nanofiltration membrane layer (33).

7. The concentration device having a nanofiltration membrane filtration mechanism according to claim 1, characterized in that: A plurality of inner cylinder support plates (12) arranged in a circumferential array are fixedly arranged on the bottom of the outer barrel (1), and the upper end surface of the inner cylinder support plate (12) can be tightly attached to the bottom filter cover (3), and in addition, there is a gap between adjacent inner cylinder support plates (12).

8. The concentration device having a nanofiltration membrane filtration mechanism according to claim 1, characterized in that: The bottom side of the outer barrel (1) is provided with a permeate discharge port (11) communicating with the inside of the barrel, and the upper cover (4) is provided with a liquid inlet (42) communicating with the inside.

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