Ultrafiltration concentrator

Abstract

The utility model discloses an ultrafiltration concentrator which comprises a first cover body, a second cover body and a mounting frame body, the first cover body and the second cover body are respectively mounted on two sides of the mounting frame body, an ultrafiltration membrane is mounted on one side, facing the first cover body, of the mounting frame body, and liquid absorption fiber paper is mounted on one side, facing the second cover body, of the mounting frame body. A liquid inlet which is communicated with an inner cavity of the first cover body and is perpendicular to the ultrafiltration membrane is formed in the top end of the first cover body, a plurality of supporting plates are installed in the inner cavity of the first cover body, and the free ends of the supporting plates abut against the ultrafiltration membrane. According to the utility model, the liquid inlet is vertical to the ultrafiltration membrane, so that the feed liquid flows in parallel to the membrane surface of the ultrafiltration membrane, the feed liquid is not limited to be gathered and permeated in a certain area of the ultrafiltration membrane, but permeates through the whole membrane surface of the ultrafiltration membrane, and intercepted substances are not gathered and continuously accumulated in the same area of the ultrafiltration membrane; therefore, the total filtration resistance of the ultrafiltration membrane is continuously increased, and the membrane flux is gradually reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of ultrafiltration equipment, and more specifically, to an ultrafiltration concentrator. Background Art

[0002] The principle of ultrafiltration concentration is a membrane separation technology based on pressure difference. The ultrafiltration membrane is used as the filtration medium. Under a certain pressure, when the feed liquid flows through the membrane surface, the densely distributed micropores on the surface of the ultrafiltration membrane only allow solvents and small molecules to pass through, while larger substances such as suspended matter, colloids, large molecular organic matter, etc. are retained on the liquid inlet side of the membrane to form a concentrated liquid.

[0003] Existing ultrafiltration concentration devices generally adopt the method of vertically flowing the feed liquid through the membrane surface. The retained substances gather in the same area of ​​the membrane surface and continue to accumulate, causing the total resistance of membrane filtration to continue to increase and the membrane flux to gradually decrease. At the same time, due to the pressure difference on both sides of the membrane, the stability of the membrane is affected to a certain extent.

[0004] Therefore, it is necessary to propose a new solution to solve the above problems. Utility Model Content

[0005] The utility model aims to overcome the deficiencies of the above-mentioned prior art and to provide an ultrafiltration concentrator, which arranges the liquid inlet perpendicular to the ultrafiltration membrane so that the feed liquid flows parallel to the membrane surface of the ultrafiltration membrane, so that the feed liquid is not limited to a certain area of ​​the ultrafiltration membrane to gather and pass through, but the entire membrane surface of the ultrafiltration membrane is passed through, and the trapped substances will not gather and accumulate in the same area of ​​the ultrafiltration membrane, thereby causing the total resistance of the ultrafiltration membrane to continue to increase and the membrane flux to gradually decrease; at the same time, since the feed liquid flows tangentially on the surface of the ultrafiltration membrane, the substances deposited on the surface of the ultrafiltration membrane can be taken away, slowing down the growth rate of the filtration resistance, and is suitable for concentrating large molecules in liquids that are sensitive to shear forces, such as urine and cerebrospinal fluid.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An ultrafiltration concentrator comprises a first cover body, a second cover body and an installation frame body, wherein the first cover body and the second cover body are respectively installed on two sides of the installation frame body, an ultrafiltration membrane is installed on the side of the installation frame body facing the first cover body, and liquid-absorbing fiber paper is installed on the side of the installation frame body facing the second cover body, a liquid inlet connected to the inner cavity of the first cover body and perpendicular to the ultrafiltration membrane is provided at the top of the first cover body, a plurality of support plates are installed in the inner cavity of the first cover body, and the free ends of the support plates are abutted against the ultrafiltration membrane, a concentrated liquid discharge port is provided at the bottom end of the first cover body and connected to the inner cavity of the first cover body, and a sealing plug is installed at the concentrated liquid discharge port.

[0008] Furthermore, the support plates are respectively located on both sides of the inner cavity of the first cover.

[0009] Furthermore, the support plate is arranged to be inclined toward the concentrated liquid discharge port, and a flow channel opening is formed between the ends of the support plate on both sides.

[0010] Furthermore, the support plates on both sides are staggered.

[0011] Furthermore, the liquid inlet is a long waist hole extending along the direction of the support plates on both sides of the first cover body.

[0012] Furthermore, a mounting groove is formed on one side of the first cover body facing the mounting frame, and an edge of the ultrafiltration membrane abuts against the bottom of the mounting groove.

[0013] Furthermore, the bottom end surface of the first cover body is an inclined surface inclined toward the concentrated liquid discharge port.

[0014] Furthermore, the first cover body and the second cover body are transparent covers, and a scale is provided on the outer side wall of the first cover body.

[0015] Furthermore, it also includes a first bracket integrally provided on the first cover body, and a second bracket integrally provided on the second cover body.

[0016] Furthermore, the top of the second cover body is provided with an exhaust port connected to its inner cavity and perpendicular to the absorbent fiber paper, and the bottom of the second cover body is provided with a filtrate discharge port connected to its inner cavity, and the filtrate discharge port is installed with a sealing plug.

[0017] The beneficial effects of the utility model are:

[0018] 1. In the utility model, the liquid inlet is arranged perpendicular to the ultrafiltration membrane so that the feed liquid flows parallel to the membrane surface of the ultrafiltration membrane, so that the feed liquid is not limited to a certain area of ​​the ultrafiltration membrane to gather and pass through, but the entire membrane surface of the ultrafiltration membrane is passed through, and the trapped substances will not gather and accumulate in the same area of ​​the ultrafiltration membrane, thereby causing the total resistance of the ultrafiltration membrane to continue to increase and the membrane flux to gradually decrease; at the same time, since the feed liquid flows tangentially on the surface of the ultrafiltration membrane, it can take away the substances deposited on the surface of the ultrafiltration membrane, slowing down the growth rate of the filtration resistance, and is suitable for the concentration of macromolecules in liquids that are sensitive to shear force, such as urine and cerebrospinal fluid.

[0019] 2. In the utility model, by setting the support plate, on the one hand, it can support the ultrafiltration membrane to prevent the ultrafiltration membrane from deforming under the filtration pressure; on the other hand, it can play a guiding effect to avoid splashing of the feed liquid when it is introduced into the inner cavity of the first cover body, thereby achieving the effect of filtering the feed liquid while it is introduced.

[0020] 3. In the present invention, the first cover and the second cover are transparent covers, and a scale is provided on the outer wall of the first cover. The concentration status of the feed liquid can be directly observed through the first cover and the second cover; the introduction amount of the feed liquid can be controlled by the scale. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of a structure of the ultrafiltration concentrator in this embodiment;

[0022] Figure 2 This is a schematic diagram of an explosion structure of the ultrafiltration concentrator in this embodiment;

[0023] Figure 3 is a schematic cross-sectional view of the ultrafiltration concentrator in this embodiment;

[0024] Figure 4 is a structural schematic diagram of the first cover body in this embodiment;

[0025] Figure 5 Schematic diagram of the structure of the second cover body in this embodiment.

[0026] Figure numerals: first cover body 1, second cover body 2, mounting frame 3, ultrafiltration membrane 4, absorbent fiber paper 5, liquid inlet 6, support plate 7, concentrate discharge port 8, sealing plug 9, flow channel port 10, mounting groove 11, scale 12, first bracket 13, second bracket 14, exhaust port 15, filtrate discharge port 16. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Embodiment: An ultrafiltration concentrator, such as Figure 1-Figure 5 As shown, it includes a first cover body 1, a second cover body 2 and a mounting frame body 3. The first cover body 1 and the second cover body 2 are both square body structures with one end open. The mounting frame body 3 is a hollow frame structure. The first cover body 1 is installed on one side of the mounting frame body 3 through its open end, and the second cover body 2 is installed on the other side of the mounting frame body 3 through its open end. An ultrafiltration membrane 4 is installed on the side of the mounting frame body 3 facing the first cover body 1, and a liquid-absorbing fiber paper 5 is installed on the side of the mounting frame body 3 facing the second cover body 2. A liquid inlet 6 connected to its inner cavity and perpendicular to the ultrafiltration membrane 4 is provided at the top of the first cover body 1, and a plurality of support plates 7 are installed in the inner cavity of the first cover body 1. The free ends of the support plates 7 are abutted against the ultrafiltration membrane 4. A concentrated liquid discharge port 8 connected to its inner cavity is provided at the bottom end of the first cover body 1, and a sealing plug 9 is installed at the concentrated liquid discharge port 8.

[0029] During use, the feed liquid is introduced into the inner cavity of the first cover body 1 through the liquid inlet 6, and the small molecular substances such as solvents and inorganic salts in the feed liquid are absorbed by the liquid-absorbing fiber paper 5 after passing through the holes of the ultrafiltration membrane 4, and the macromolecular substances such as proteins and polysaccharides in the feed liquid are retained by the ultrafiltration membrane 4. After standing for a period of time, the feed liquid is gradually concentrated to form a concentrated liquid. The sealing plug 9 is removed, and the concentrated liquid is discharged and collected through the concentrated liquid discharge port 8.

[0030] By setting the liquid inlet 6 perpendicular to the ultrafiltration membrane 4, the feed liquid flows parallel to the membrane surface of the ultrafiltration membrane 4, so that the feed liquid is not limited to a certain area of ​​the ultrafiltration membrane 4 to gather and penetrate, but the entire membrane surface of the ultrafiltration membrane 4 is penetrated, so that the trapped substances will not gather and accumulate in the same area of ​​the ultrafiltration membrane 4, thereby causing the total resistance of the ultrafiltration membrane 4 to continue to increase and the membrane flux to gradually decrease; at the same time, since the feed liquid flows tangentially on the surface of the ultrafiltration membrane 4, it can take away the substances deposited on the surface of the ultrafiltration membrane 4, slowing down the growth rate of the filtration resistance, which is suitable for the concentration of macromolecules in liquids sensitive to shear force such as urine and cerebrospinal fluid. By setting the support plate 7, the ultrafiltration membrane 4 can be supported to prevent the ultrafiltration membrane 4 from deforming under the filtration pressure.

[0031] As a preference, Figure 4 As shown, the support plates 7 are respectively located on both sides of the inner cavity of the first cover body 1. The above design is adopted to increase the protection area of ​​the support plate 7 for the ultrafiltration membrane 4 and improve the anti-deformation effect of the ultrafiltration membrane 4.

[0032] Preferably, the support plate 7 is tilted toward the concentrate discharge port 8, and a flow channel 10 is formed between the ends of the support plates 7 on both sides. By tilting the support plate 7, the support plate 7 not only forms an anti-deformation effect on the ultrafiltration membrane 4, but also increases the flow diversion effect to facilitate the flow of the feed liquid.

[0033] Preferably, the support plates 7 on both sides are staggered, that is, the installation position of the support plate 7 on one side is higher than the installation position of the support plate 7 on the other side; by adopting the above design, the opening size of the flow channel 10 formed between the ends of the support plates 7 on both sides can be controlled, thereby controlling the flow rate of the feed liquid, and controlling the filtration position and effect of the ultrafiltration membrane 4 when the feed liquid flows.

[0034] Preferably, the liquid inlet 6 is a long waist hole extending in the direction of the support plates 7 on both sides of the first cover body 1, that is, one side of the liquid inlet 6 extends to above the support plate 7 on one side in the inner cavity of the first cover body 1, and the other side of the liquid inlet 6 extends to above the support plate 7 on the other side in the inner cavity of the first cover body 1; with the above design, the liquid can be introduced into the inner cavity of the first cover body 1 with the help of the support plate 7, avoiding splashing of the liquid during the introduction process, and at the same time, the effect of filtering the liquid while introducing it can be achieved.

[0035] Furthermore, a mounting groove 11 is provided on one side of the first cover body 1 facing the mounting frame body 3. When the first cover body 1 and the mounting frame body 3 are connected, the edge of the ultrafiltration membrane 4 is located in the mounting groove 11 and abuts against the bottom of the mounting groove 11. By setting the mounting groove 11, the edge of the ultrafiltration membrane 4 can be fixed, further preventing the ultrafiltration membrane 4 from deforming under the filtering pressure, and further improving the anti-deformation effect of the ultrafiltration membrane 4.

[0036] Furthermore, the bottom end surface of the first cover body 1 is an inclined surface inclined toward the concentrated liquid discharge port 8; Figure 4 As shown, the concentrated liquid discharge port 8 is located at the center of the bottom end of the first cover body 1, and the bottom end surfaces on both sides of the concentrated liquid discharge port 8 are inclined toward the concentrated liquid discharge port 8, and the inclined slope is used to facilitate the discharge of the concentrated liquid.

[0037] The first cover body 1 and the second cover body 2 are transparent covers, that is, they are made of transparent plastic. The concentration status of the feed liquid can be directly observed through the first cover body 1 and the second cover body 2; a scale 12 is provided on the outer wall of the first cover body 1, and the scale 12 can be used to control the introduction amount of the feed liquid, such as controlling the introduction amount of the feed liquid within 20 ml.

[0038] Furthermore, the above-mentioned ultrafiltration concentrator also includes a first bracket 13 integrally provided on the first cover body 1, and a second bracket 14 integrally provided on the second cover body 2, and the first bracket 13 and the second bracket 14 have the same structure; through the arrangement of the first bracket 13 and the second bracket 14, the ultrafiltration concentrator is supported to facilitate the ultrafiltration concentrator to be placed stably on the workbench, thereby facilitating the ultrafiltration concentrator to filter and concentrate the feed liquid.

[0039] Preferably, the top of the second cover body 2 is provided with an exhaust port 15 connected to the inner cavity thereof and perpendicular to the absorbent fiber paper 5, and the bottom of the second cover body 2 is provided with a filtrate discharge port 16 connected to the inner cavity thereof, and the filtrate discharge port 16 is installed with a sealing plug 9. The inner cavity of the second cover body 2 can be used to store the filtrate overflowed from the absorbent fiber paper 5 by dialysis, and the filtrate can be discharged from the filtrate discharge port 16 according to demand.

[0040] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. An ultrafiltration concentrator, comprising a first cover (1), a second cover (2) and a mounting frame (3), characterized in that: The first cover body (1) and the second cover body (2) are respectively installed on two sides of the installation frame (3); an ultrafiltration membrane (4) is installed on the side of the installation frame (3) facing the first cover body (1); and a liquid-absorbing fiber paper (5) is installed on the side of the installation frame (3) facing the second cover body (2). The top of the first cover body (1) is provided with a liquid inlet (6) connected to its inner cavity and perpendicular to the ultrafiltration membrane (4); a plurality of support plates (7) are installed in the inner cavity of the first cover body (1); the free ends of the support plates (7) are in contact with the ultrafiltration membrane (4); the bottom of the first cover body (1) is provided with a concentrated liquid discharge port (8) connected to its inner cavity; and a sealing plug (9) is installed at the concentrated liquid discharge port (8).

2. An ultrafiltration concentrator according to claim 1, characterized in that: The support plates (7) are respectively located on two sides of the inner cavity of the first cover body (1).

3. An ultrafiltration concentrator according to claim 2, characterized in that: The support plate (7) is arranged to be inclined toward the concentrated liquid discharge port (8), and a flow channel opening (10) is formed between the ends of the support plate (7) on both sides.

4. An ultrafiltration concentrator according to claim 3, characterized in that: The support plates (7) on both sides are arranged in a staggered manner.

5. The ultrafiltration concentrator according to claim 2, characterized in that: The liquid inlet (6) is a long waist hole extending in the direction of the support plates (7) on both sides of the first cover body (1).

6. The ultrafiltration concentrator according to claim 1, characterized in that: A mounting groove (11) is provided on one side of the first cover body (1) facing the mounting frame body (3), and the edge of the ultrafiltration membrane (4) abuts against the bottom of the mounting groove (11).

7. The ultrafiltration concentrator according to claim 1, characterized in that: The bottom end surface of the first cover body (1) is an inclined surface inclined toward the concentrated liquid discharge port (8).

8. The ultrafiltration concentrator according to claim 1, characterized in that: The first cover body (1) and the second cover body (2) are transparent cover bodies, and a scale (12) is provided on the outer side wall of the first cover body (1).

9. The ultrafiltration concentrator according to claim 1, characterized in that: It also includes a first bracket (13) integrally provided on the first cover body (1), and a second bracket (14) integrally provided on the second cover body (2).

10. The ultrafiltration concentrator according to claim 1, characterized in that: The top end of the second cover body (2) is provided with an exhaust port (15) which is connected to the inner cavity thereof and is perpendicular to the absorbent fiber paper (5); the bottom end of the second cover body (2) is provided with a filtrate discharge port (16) which is connected to the inner cavity thereof; and the filtrate discharge port (16) is provided with a sealing plug (9).

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