Membrane element permeability testing device

Abstract

The utility model discloses a membrane element permeability testing device, which belongs to the technical field of membrane element testing and comprises an upper end cover and a lower end cover, a membrane is arranged between the upper end cover and the lower end cover, a sleeving mechanism is sleeved on the outer sides of the upper end cover and the lower end cover, and a rotating groove is arranged on the top surface of the upper end cover. According to the device disclosed by the utility model, when the permeability is tested, the gear is driven to rotate through the servo motor, the rotating ring, the feeding channel and the material guide hose are driven to rotate by utilizing the meshing transmission between the gear and the inner gear ring, and raw material liquid or gas is respectively guided into the plurality of counter bore grooves through the material guide hose and the feeding channel; raw material liquid or gas with the same pressure is intermittently guided into the inner cavity of the upper end cover through the plurality of counter bore grooves, and the raw material liquid or gas is uniformly distributed by utilizing the distributor, so that the uniformity of the pressure borne by the membrane at the lower part of the upper end cover is effectively ensured, and the practicability of the membrane element permeability testing device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of membrane element testing, and more specifically to a membrane element permeability performance testing device. Background Art

[0002] The membrane element is a separation core composed of a separation membrane, but it does not have a pressure-resistant shell and cannot be directly operated on the device. For example, if the microfiltration membrane is made into a pleated skirt tube, it cannot be used alone and is called a pleated skirt microfiltration element; if the ultrafiltration membrane is composited on a sintered polyethylene support tube, it cannot be used alone and is called a tubular ultrafiltration element. A guide layer is sandwiched between two flat membranes, and the three sides are sealed into a bag shape. A special grid is placed on the membrane bag and wound on a porous filtrate collection tube to make a roll element. The ultrafiltration membrane is called a roll ultrafiltration element, and the reverse osmosis membrane is called a roll reverse osmosis element. The membrane element is the core part, and its performance directly affects the operation effect and reliability of the entire separation system. Therefore, the permeability performance of the membrane element needs to be tested after production.

[0003] After searching, the invention patent with announcement number CN106621827A discloses a flat membrane permeability performance test assembly, including an upper end cover, a lower end cover, a distributor, a membrane and a support plate; the distributor is arranged in a cavity formed by the upper end cover and the lower end cover, the distributor forms a feed cavity with the upper end cover, and forms a permeate cavity with the lower end cover, and a permeate channel is provided on the distributor; the upper end cover is provided with a feed channel, which is connected to the feed cavity, and the lower end cover is provided with a permeate channel, which is connected to the permeate cavity; the membrane is located below the distributor; the support plate is arranged below the membrane; the membrane assembly of this patent has a simple structure and a compact design, and uses a distributor to evenly disperse the raw gas in the membrane separation cavity, which not only improves the effective distribution of the raw material on the membrane surface and improves the separation efficiency of the membrane, but also avoids the "short circuit" phenomenon that the raw gas does not fully contact the membrane and directly enters the permeate channel during the operation of the membrane assembly, and can also suppress the concentration polarization phenomenon on the membrane surface.

[0004] However, the above patents still have the following shortcomings: although the raw liquid or gas entering from the feed channel can be distributed by the distributor, there is a pressure difference in the distribution flow process, which makes the flat membrane located under the feed channel subject to greater pressure, and the flat membrane far from the feed channel subject to less pressure, which will also affect the quality of the flat membrane performance test; in addition, the convenience of fixing the upper end cover and the lower end cover by the combination of bolts and nuts is not good, and the installation and disassembly are more cumbersome. For this reason, we propose a membrane element permeability performance test device. Utility Model Content

[0005] In view of the problems existing in the prior art, the utility model aims to provide a membrane element permeability performance testing device.

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

[0007] A membrane element permeability performance testing device comprises an upper end cover and a lower end cover, a diaphragm is placed between the upper end cover and the lower end cover, a sleeve mechanism is sleeved on the outer sides of the upper end cover and the lower end cover, a rotating groove is opened on the top surface of the upper end cover, a plurality of countersunk grooves are opened on the bottom of the inner cavity of the rotating groove, a distributor is installed in the inner cavity of the upper end cover, a rotating ring is rotatably connected to the inner cavity of the rotating groove, an inner gear ring is arranged on the inner side of the top of the rotating ring, a servo motor is fixedly installed on the top surface of the upper end cover, a gear is fixedly sleeved on the output shaft of the servo motor, the gear and the inner gear ring are meshed with each other, a feed channel is fixedly sleeved on the rotating ring, the bottom end of the feed channel is matched with the position of the countersunk groove, and a material guide hose is fixedly sleeved on the top of the feed channel.

[0008] As a preferred solution of the utility model, the sleeve mechanism includes a sleeve ring sleeved on the outer side of the upper end cover and the lower end cover, the rear parts of the two sleeve rings are fixedly installed with hinges, the front part of one sleeve ring is fixedly connected to the first connecting seat, and the front part of the other sleeve ring is fixedly connected to the second connecting seat, the front part of the first connecting seat is provided with a connecting groove, and the front part of the second connecting seat is provided with a clamping groove, the inner cavity of the connecting groove is rotatably connected with a stud, the end part of the stud passes through the clamping groove and extends to the outer side of the second connecting seat and is threadedly installed with a butterfly nut, and the side surfaces of the upper end cover and the lower end cover are in contact with the inner wall of the sleeve ring.

[0009] As a preferred solution of the utility model, the inner cavity of the lower end cover is provided with multiple support columns, and support plates are placed on the top of the multiple support columns. The top surface of the support plate is in contact with the bottom surface of the membrane, and a permeate channel is provided at the bottom of the lower end cover.

[0010] As a preferred solution of the utility model, the top surface of the distributor is provided with a plurality of screw holes, and the top surface of the upper end cover is provided with a plurality of stepped holes, the inner cavities of the plurality of stepped holes are all sleeved with hexagon socket screws, and the bottom end of the hexagon socket screws are threadedly installed to the inner cavity of the screw hole.

[0011] As a preferred solution of the utility model, the bottom surface of the upper end cover and the top surface of the lower end cover are both provided with rubber pads.

[0012] As a preferred solution of the utility model, a pipe hole is provided in the middle of the top surface of the upper end cover, and a residual material channel is sleeved in the middle of the distributor. The top end of the residual material channel passes through the pipe hole and extends to the top of the upper end cover, and the side surface of the residual material channel is in contact with the inner wall of the pipe hole.

[0013] As a preferred solution of the utility model, the bottom surface of the rotating ring is in contact with the bottom surface of the inner cavity of the rotating groove, and the side surface of the rotating ring is in contact with the inner wall of the diaphragm.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] (1) In the utility model, during the permeability performance test, the gear is driven to rotate by a servo motor, and the meshing transmission between the gear and the inner gear ring is used to drive the rotating ring, the feed channel and the material guide hose to rotate. The raw material liquid or gas is respectively introduced into a plurality of countersunk grooves through the material guide hose and the feed channel, and the raw material liquid or gas of the same pressure is intermittently introduced into the inner cavity of the upper end cover through the plurality of countersunk grooves. The raw material liquid or gas is evenly distributed by a distributor, thereby effectively ensuring the uniformity of the pressure on the lower diaphragm of the upper end cover.

[0016] (2) In the utility model, after the diaphragm to be tested is placed between the upper end cover and the lower end cover, a set ring is put on the outer side of the upper end cover and the lower end cover, and the stud is turned to pass through the inner cavity of the clamping groove, and the butterfly nut is rotated so that its end face and the side surface of the second connecting seat are squeezed together. The two set rings are fixed to the outer side of the upper end cover and the lower end cover by utilizing the cooperation of the first connecting seat, the second connecting seat, the stud and the butterfly nut, so as to realize convenient connection of the upper end cover and the lower end cover, which has good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is an exploded view of the overall structure of the utility model;

[0019] Figure 3 It is a cross-sectional schematic diagram of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the upper end cover of the utility model;

[0021] Figure 5 It is a structural schematic diagram of the rotating ring of the utility model;

[0022] Figure 6 It is a structural schematic diagram of the suiting mechanism of the utility model;

[0023] Figure 7 For this utility model Figure 3 A is an enlarged schematic diagram;

[0024] Figure 8 For this utility model Figure 6 The enlarged schematic diagram of point B in FIG.

[0025] Description of the numbers in the figure:

[0026] 1. Upper end cover; 2. Lower end cover; 3. Set mechanism; 4. Diaphragm; 5. Rotating groove; 6. Countersunk groove; 7. Distributor; 8. Residual material channel; 9. Rotating ring; 10. Servo motor; 11. Internal gear ring; 12. Gear; 13. Feed channel; 14. Material guide hose; 15. Set ring; 16. Hinge; 17. First connecting seat; 18. Second connecting seat; 19. Connecting groove; 20. Snap-in groove; 21. Stud; 22. Butterfly nut; 23. Rubber pad; 24. Support column; 25. Support plate; 26. Residual material channel; 27. Through-tube hole; 28. Step hole; 29. ​​Screw hole; 30. Hexagon socket screw. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings 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] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] Example:

[0031] See also Figure 1-8A membrane element permeability performance testing device comprises an upper end cover 1 and a lower end cover 2, a diaphragm 4 is placed between the upper end cover 1 and the lower end cover 2, a sheathing mechanism 3 is sleeved on the outer side of the upper end cover 1 and the lower end cover 2, a rotating groove 5 is provided on the top surface of the upper end cover 1, a plurality of countersunk grooves 6 are provided at the bottom of the inner cavity of the rotating groove 5, a distributor 7 is installed in the inner cavity of the upper end cover 1, a rotating ring 9 is rotatably connected to the inner cavity of the rotating groove 5, an inner gear ring 11 is provided on the inner side of the top of the rotating ring 9, a servo motor 10 is fixedly installed on the top surface of the upper end cover 1, a gear 12 is fixedly sleeved on the output shaft of the servo motor 10, the gear 12 and the inner gear ring 11 are meshed with each other, a feed channel 13 is fixedly sleeved on the rotating ring 9, the bottom end of the feed channel 13 is adapted to the position of the countersunk groove 6, and a material guide hose 14 is fixedly sleeved on the top of the feed channel 13.

[0032] For details, please refer to Figure 1 , Figure 2 , Figure 6 and Figure 8 The sleeve mechanism 3 includes a sleeve ring 15 sleeved on the outer side of the upper end cover 1 and the lower end cover 2, and a hinge 16 is fixedly installed on the rear of the two sleeve rings 15. The front of one sleeve ring 15 is fixedly connected to a first connecting seat 17, and the front of the other sleeve ring 15 is fixedly connected to a second connecting seat 18. A connecting groove 19 is provided at the front of the first connecting seat 17, and a clamping groove 20 is provided at the front of the second connecting seat 18. A stud 21 is rotatably connected to the inner cavity of the connecting groove 19, and the end of the stud 21 passes through the clamping groove 20 and extends to the outer side of the second connecting seat 18 and is threadedly installed with a butterfly nut 22. The side surfaces of the upper end cover 1 and the lower end cover 2 are in contact with the inner wall of the sleeve ring 15.

[0033] In this embodiment, the inner cavity heights of the connecting groove 19 and the clamping groove 20 are equal to the outer diameter of the stud 21 , thereby ensuring the stability of the stud 21 on the first connecting seat 17 and the second connecting seat 18 .

[0034] For details, please refer to Figure 2 and Figure 3 The inner cavity of the lower end cover 2 is provided with a plurality of support columns 24 , and a support plate 25 is placed on the top of the plurality of support columns 24 . The top surface of the support plate 25 is in contact with the bottom surface of the membrane 4 , and a permeate channel 26 is provided at the bottom of the lower end cover 2 .

[0035] In this embodiment, the support plate 25 and the permeate channel 26 are supported by the support column 24 .

[0036] For details, please refer to Figure 3 The top surface of the distributor 7 is provided with a plurality of screw holes 29, and the top surface of the upper end cover 1 is provided with a plurality of stepped holes 28. The inner cavities of the plurality of stepped holes 28 are all sleeved with hexagon socket screws 30, and the bottom ends of the hexagon socket screws 30 are threadedly installed into the inner cavities of the screw holes 29.

[0037] In this embodiment, the distributor 7 is installed by the cooperation of the stepped hole 28, the screw hole 29 and the hexagon socket screw 30, so that the distributor 7 is installed inside the upper end cover 1, and there is a gap between the distributor 7 and the inner wall of the upper end cover 1.

[0038] For details, please refer to Figure 7 The bottom surface of the upper end cover 1 and the top surface of the lower end cover 2 are both provided with rubber pads 23.

[0039] In this embodiment, the rubber pad 23 is used to enhance the sealing between the upper end cover 1 and the lower end cover 2 , while ensuring the stability of the extrusion of the diaphragm 4 .

[0040] For details, please refer to Figure 3 and Figure 4 A through-tube hole 27 is provided in the middle of the top surface of the upper end cover 1, and a residual material channel 8 is sleeved in the middle of the distributor 7. The top end of the residual material channel 8 passes through the through-tube hole 27 and extends to the top of the upper end cover 1, and the side surface of the residual material channel 8 is in contact with the inner wall of the through-tube hole 27.

[0041] In this embodiment, the residual material channel 8 is penetrated through the pipe-penetrating hole 27 , and the waste material is discharged through the pipe-penetrating hole 27 .

[0042] For details, please refer to Figure 2 and Figure 3 The bottom surface of the rotating ring 9 is in contact with the bottom surface of the inner cavity of the rotating groove 5 , and the side surface of the rotating ring 9 is in contact with the inner wall of the diaphragm 4 .

[0043] In this embodiment, the sealing between the rotating ring 9 and the upper end cover 1 is ensured.

[0044] Working principle: When in use, first install the distributor 7 in the inner cavity of the upper end cover 1 through the stepped hole 28, the screw hole 29 and the hexagon socket screw 30, and then place the diaphragm 4 to be tested between the upper end cover 1 and the lower end cover 2, and then put the set ring 15 on the outer side of the upper end cover 1 and the lower end cover 2, and make the front part of the set ring 15 fit together, then turn the stud 21 to make it pass through the inner cavity of the clamping groove 20, turn the butterfly nut 22 so that its end face and the side of the second connecting seat 18 are squeezed together, so that the two set rings 15 are installed on the outer side of the upper end cover 1 and the lower end cover 2, and fix the upper end cover 1 and the lower end cover 2 at the same time, and then introduce the raw material liquid or gas into the countersunk groove 6 through the material guide hose 14 and the feed channel 13, and start the servo motor 10 to drive the gear 12 to rotate, and use The meshing transmission between the gear 12 and the inner gear ring 11 drives the rotating ring 9 and the feed channel 13 to rotate, so that the raw material liquid or gas injected into the feed channel 13 enters the multiple countersunk grooves 6 in turn, and the raw material liquid or gas introduced into the multiple countersunk grooves 6 enters the inner cavity of the upper end cover 1, and the raw material liquid or gas is evenly distributed through the distributor 7, so that the raw material liquid or gas enters the diaphragm 4 from the gap between the distributor 7 and the upper end cover 1, and finally, driven by the pressure of the raw material liquid or gas, the raw material liquid or gas passing through the diaphragm 4 enters the inner cavity of the lower end cover 2 and is collected, and is discharged from the permeate channel 26. At the same time, the pressure of the raw material liquid or gas discharged from the permeate channel 26 is detected for subsequent calculation of the permeability performance. The raw material liquid or gas that has not passed through the diaphragm 4 is discharged from the residual material channel 8.

[0045] The above is only a preferred specific implementation method of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the utility model according to the technical solution and improved ideas of the utility model, which should be included in the protection scope of the utility model.

Claims

1. A membrane element permeability testing device, comprising an upper end cover (1) and a lower end cover (2), characterized in that: A diaphragm (4) is placed between the upper end cover (1) and the lower end cover (2); a sleeve mechanism (3) is sleeved on the outer sides of the upper end cover (1) and the lower end cover (2); a rotating groove (5) is provided on the top surface of the upper end cover (1); a plurality of countersunk grooves (6) are provided at the bottom of the inner cavity of the rotating groove (5); a distributor (7) is installed in the inner cavity of the upper end cover (1); a rotating ring (9) is rotatably connected to the inner cavity of the rotating groove (5); a rotating ring (9) is provided on the inner side of the top end of the rotating ring (9); An inner gear ring (11) is arranged, a servo motor (10) is fixedly mounted on the top surface of the upper end cover (1), a gear (12) is fixedly sleeved on the output shaft of the servo motor (10), the gear (12) and the inner gear ring (11) are meshed with each other, a feed channel (13) is fixedly sleeved on the rotating ring (9), the bottom end of the feed channel (13) is adapted to the position of the counterbore groove (6), and a material guide hose (14) is fixedly sleeved on the top end of the feed channel (13).

2. A membrane element permeability testing device according to claim 1, characterized in that: The sleeve mechanism (3) comprises a sleeve ring (15) sleeved on the outer sides of the upper end cover (1) and the lower end cover (2); hinges (16) are fixedly installed at the rear of the two sleeve rings (15); the front of one sleeve ring (15) is fixedly connected to a first connecting seat (17); the front of the other sleeve ring (15) is fixedly connected to a second connecting seat (18); the front of the first connecting seat (17) is provided with a connecting groove (19); the front of the second connecting seat (18) is provided with a clamping groove (20); the inner cavity of the connecting groove (19) is rotatably connected to a stud (21); the end of the stud (21) passes through the clamping groove (20) and extends to the outer side of the second connecting seat (18) and is threadedly installed with a butterfly nut (22); the side surfaces of the upper end cover (1) and the lower end cover (2) are in contact with the inner wall of the sleeve ring (15).

3. A membrane element permeability testing device according to claim 1, characterized in that: The inner cavity of the lower end cover (2) is provided with a plurality of support columns (24), and a support plate (25) is placed on the top of the plurality of support columns (24). The top surface of the support plate (25) is in contact with the bottom surface of the membrane (4), and a permeate channel (26) is provided at the bottom of the lower end cover (2).

4. A membrane element permeability testing device according to claim 1, characterized in that: The top surface of the distributor (7) is provided with a plurality of screw holes (29), and the top surface of the upper end cover (1) is provided with a plurality of stepped holes (28). The inner cavities of the plurality of stepped holes (28) are all provided with hexagon socket screws (30), and the bottom ends of the hexagon socket screws (30) are threadedly installed in the inner cavities of the screw holes (29).

5. A membrane element permeability testing device according to claim 1, characterized in that: The bottom surface of the upper end cover (1) and the top surface of the lower end cover (2) are both provided with rubber pads (23).

6. A membrane element permeability testing device according to claim 1, characterized in that: A pipe hole (27) is provided in the middle of the top surface of the upper end cover (1), and a residual material channel (8) is sleeved in the middle of the distributor (7). The top end of the residual material channel (8) passes through the pipe hole (27) and extends to the top of the upper end cover (1), and the side surface of the residual material channel (8) is in contact with the inner wall of the pipe hole (27).

7. A membrane element permeability testing device according to claim 1, characterized in that: The bottom surface of the rotating ring (9) fits with the bottom surface of the inner cavity of the rotating groove (5), and the side surface of the rotating ring (9) fits with the inner wall of the diaphragm (4).

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