Bipolar membrane electrodialysis device

Abstract

The utility model relates to the technical field of water treatment, and discloses a bipolar membrane electrodialysis device which comprises a box body and a plurality of bipolar membranes fixedly arranged in the box body, a water inlet pipe is fixedly arranged at the top of the box body, and a water outlet pipe is fixedly arranged at the bottom of the box body. Cleaning mechanisms are arranged in the box body and located on the upper surfaces of the bipolar membranes; a base is arranged below the box body, supporting seats are symmetrically and fixedly arranged at the top of the base, the box body is located between the two supporting seats, the two sides of the box body are rotationally connected with the two supporting seats through rotating shafts correspondingly, and a limiting mechanism is arranged at the end of one rotating shaft. According to the utility model, a plurality of bipolar membranes do not need to be disassembled, the plurality of bipolar membranes can be conveniently and synchronously cleaned, the cleaning strength is reduced, and meanwhile, the reverse flushing function is realized, the cleaning quality is improved, and the sewage treatment quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, in particular to a bipolar membrane electrodialysis device. Background Art

[0002] Bipolar membrane electrodialysis technology is a high-efficiency membrane separation technology developed on the basis of electrodialysis. It innovatively combines electrodialysis technology and bipolar membrane technology and is widely used in many engineering fields such as environmental engineering, chemical engineering, bioengineering and food engineering. It is mainly used to convert salt in aqueous solution into corresponding acid and alkali without introducing new components. In the field of water treatment, bipolar membrane electrodialysis technology is often used as a technology for recycling high-concentration wastewater, which reduces wastewater discharge and also recycles resources. Therefore, bipolar membrane electrodialysis technology has been widely used in recent years.

[0003] For example, the patent number CN216799395U discloses a bipolar membrane electrodialysis lactic acid device, including an electrodialysis box, a bipolar membrane frame is detachably provided inside the electrodialysis box through a first mounting mechanism, and a bipolar membrane mechanism is detachably provided inside the bipolar membrane frame through a second mounting mechanism; the first mounting mechanism includes a first motor fixedly provided at the bottom of the electrodialysis box, and a first screw arranged inside the electrodialysis box and rotated by the first motor; the second mounting mechanism includes a second motor fixedly provided at the bottom of the electrodialysis box, a rotating block arranged inside the electrodialysis box and rotated by the second motor, and a second screw arranged inside the bipolar membrane frame and engageable with the rotating block; the bipolar membrane mechanism includes a frame arranged inside the bipolar membrane frame, and a membrane body arranged inside the frame.

[0004] In the above scheme, in order to clean the bipolar membrane mechanism, the interior of the bipolar membrane mechanism housing is disassembled, and although cleaning is possible, the cleaning intensity is increased due to the large number of bipolar membrane mechanisms. To this end, a bipolar membrane electrodialysis device is proposed. Utility Model Content

[0005] The utility model aims to solve the problems raised by the background technology and proposes a bipolar membrane electrodialysis device.

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

[0007] A bipolar membrane electrodialysis device comprises a box body and a plurality of bipolar membranes fixedly arranged inside the box body, a water inlet pipe is fixedly arranged on the top of the box body, a water outlet pipe is fixedly arranged on the bottom of the box body, and a cleaning mechanism is arranged inside the box body and on the upper surfaces of the plurality of bipolar membranes; a base is arranged below the box body, a support seat is symmetrically fixedly arranged on the top of the base, the box body is located between the two support seats, and both sides of the box body are rotatably connected to the two support seats through a rotating shaft, and a limiting mechanism is arranged at the end of one of the rotating shafts.

[0008] Preferably, the cleaning mechanism includes a cylinder, a pull rod, a pull plate and a brush. A pull rod is provided inside the box and on the upper surface of multiple bipolar membranes. One end of the pull rod is fixedly connected to the pull plate. The brush is fixedly arranged on the lower surface of the pull plate and is arranged in contact with the bipolar membrane. One end of the pull rod away from the pull plate extends to the outside of the box and is fixedly provided with the same connecting plate. The cylinder is fixedly arranged on the side wall of the box, and the end of the piston rod of the cylinder is fixedly connected to the connecting plate.

[0009] Preferably, a sealing sleeve is fixedly embedded in the side wall of the box body, and the rod wall of the pull rod slides through the interior of the sealing sleeve.

[0010] Preferably, the side walls of the box body and the tops of the plurality of bipolar membranes are provided with slag removal ports, and a sealing cover is provided inside the slag removal ports.

[0011] Preferably, a plurality of evenly distributed supporting rods are fixedly provided on the inner side wall of the box body and located below the bipolar membrane.

[0012] Preferably, the limiting mechanism includes a limiting plate and a limiting bolt, the limiting plate is fixedly arranged on the end of the rotating shaft, the limiting bolt is inserted into the side wall of the limiting plate, and the side wall of the support seat is provided with a limiting screw hole matching the limiting bolt.

[0013] Preferably, the number of the limiting screw holes is two, and the two limiting screw holes are arranged in an upper and lower angle distribution.

[0014] Preferably, the support seat is a triangular seat.

[0015] Preferably, the brush is made of nylon bristles.

[0016] Compared with the prior art, the utility model provides a bipolar membrane electrodialysis device, which has the following beneficial effects:

[0017] 1. The bipolar membrane electrodialysis device is provided with a cylinder, a pull rod, a pull plate, a brush and a connecting plate. The cylinder can drive the connecting plate to move during the telescopic action, and the connecting plate can simultaneously drive multiple pull rods to move. The multiple pull rods can drive multiple pull plates to move, so that multiple brushes move and clean the surfaces of multiple bipolar membranes, so that impurities on the surfaces of the multiple bipolar membranes are cleaned to one side, thereby facilitating direct manual cleaning without the need to disassemble and clean the multiple bipolar membranes, thereby reducing the intensity of cleaning.

[0018] 2. The bipolar membrane electrodialysis device is provided with a support seat and a rotating shaft. After cleaning the surface of the bipolar membrane, the box body is rotated through the rotating shaft to interchange the positions of the water inlet pipe and the water outlet pipe. Then, by connecting the water supply pipe with the water inlet pipe, multiple bipolar membranes inside the box body can be reversely flushed, thereby improving the cleaning effect of the bipolar membrane.

[0019] The parts not involved in the device are the same as the existing technology or can be implemented by using the existing technology. The utility model does not need to disassemble multiple bipolar membranes, which is convenient for simultaneous cleaning of multiple bipolar membranes, reduces the cleaning intensity, and at the same time has a backwashing function, which improves the cleaning quality and improves the sewage treatment quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a bipolar membrane electrodialysis device proposed by the utility model;

[0021] Figure 2 for Figure 1 A cross-sectional view of the middle box;

[0022] Figure 3 for Figure 1 Schematic diagram of the structure of the middle support seat.

[0023] In the figure: 1. box body; 2. bipolar membrane; 3. water inlet pipe; 4. water outlet pipe; 5. base; 6. support seat; 7. rotating shaft; 8. cylinder; 9. pull rod; 10. pull plate; 11. brush; 12. connecting plate; 13. sealing sleeve; 14. sealing cover; 15. support rod; 16. limit plate; 17. limit bolt; 18. limit screw hole. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0026] Example 1

[0027] Reference Figure 1-2 A bipolar membrane electrodialysis device comprises a box body 1 and a plurality of bipolar membranes 2 fixedly arranged inside the box body 1, a plurality of evenly distributed support rods 15 are fixedly arranged on the inner side wall of the box body 1 and located below the bipolar membranes 2, and the support rods 15 can increase the use strength of the bipolar membranes 2, a water inlet pipe 3 is fixedly arranged on the top of the box body 1, a water outlet pipe 4 is fixedly arranged on the bottom of the box body 1, a cleaning mechanism is arranged inside the box body 1 and on the upper surfaces of the plurality of bipolar membranes 2, the cleaning mechanism comprises a cylinder 8, a pull rod 9, a pull plate 10 and a brush 11, a pull rod 9 is arranged inside the box body 1 and on the upper surfaces of the plurality of bipolar membranes 2, one end of the pull rod 9 is fixedly connected to the pull plate 10, the brush 11 is fixedly arranged on the lower surface of the pull plate 10, and the brush 11 is arranged in contact with the bipolar membrane 2, the brush 11 is made of nylon bristles, the nylon material has high use strength and is not easy to fall off, and the ends of the plurality of pull rods 9 away from the pull plate 10 extend to the outside of the box body 1 and are fixedly provided with the same A connecting plate 12 is provided, and the cylinder 8 is fixedly arranged on the side wall of the box body 1, and the piston rod end of the cylinder 8 is fixedly connected to the connecting plate 12. The cylinder 8 can drive the connecting plate 12 to move during the telescopic action, and the connecting plate 12 can simultaneously drive multiple pull rods 9 to move, and multiple pull rods 9 can drive multiple pull plates 10 to move, so that multiple brushes 11 move and clean the surfaces of multiple bipolar membranes 2, so that the impurities on the surfaces of multiple bipolar membranes 2 are cleaned to one side, so as to facilitate manual direct cleaning; a sealing sleeve 13 is fixedly embedded in the side wall of the box body 1, and the rod wall of the pull rod 9 slides through the interior of the sealing sleeve 13, and the sliding sealing sleeve 13 can make the pull rod 9 and the box body 1 sealed and slidably connected to avoid water leakage; the side wall of the box body 1 and the upper part of the multiple bipolar membranes 2 are all provided with a slag removal port, and a sealing cover 14 is provided inside the slag removal port, and the impurities on the surface of the bipolar membrane 2 can be cleaned by opening the sealing cover 14.

[0028] Example 2

[0029] Reference Figure 1 and 3A base 5 is provided below the box body 1, and a support seat 6 is symmetrically fixed on the top of the base 5. The support seat 6 adopts a triangular seat with high support strength. The box body 1 is located between the two support seats 6, and both sides of the box body 1 are rotatably connected to the two support seats 6 through a rotating shaft 7. A limiting mechanism is provided at the end of one of the rotating shafts 7. The limiting mechanism includes a limiting plate 16 and a limiting bolt 17. The limiting plate 16 is fixedly arranged at the end of the rotating shaft 7, and the limiting bolt 17 is inserted into the limiting plate 16. On the side wall, and the side wall of the support seat 6 is provided with a limiting screw hole 18 matched with the limiting bolt 17, the number of the limiting screw holes 18 is two, and the two limiting screw holes 18 are distributed 180° up and down. After cleaning the surface of the bipolar membrane 2, the box body 1 is rotated through the rotating shaft 7 to interchange the positions of the water inlet pipe 3 and the water outlet pipe 4. Then, by connecting the water supply pipe to the water inlet pipe 3, the multiple bipolar membranes 2 inside the box body 1 can be reversely flushed, thereby improving the cleaning effect of the bipolar membrane 2.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A bipolar membrane electrodialysis device, comprising a housing (1) and a plurality of bipolar membranes (2) fixedly arranged inside the housing (1), characterized in that: A water inlet pipe (3) is fixedly provided on the top of the box (1), a water outlet pipe (4) is fixedly provided on the bottom of the box (1), and a cleaning mechanism is provided inside the box (1) and on the upper surfaces of the plurality of bipolar membranes (2); A base (5) is provided below the box body (1), and a support seat (6) is symmetrically fixedly provided on the top of the base (5). The box body (1) is located between the two support seats (6), and both sides of the box body (1) are rotatably connected to the two support seats (6) via rotating shafts (7), and a limiting mechanism is provided at the end of one of the rotating shafts (7).

2. A bipolar membrane electrodialysis device according to claim 1, characterized in that: The cleaning mechanism comprises a cylinder (8), a pull rod (9), a pull plate (10) and a brush (11); a pull rod (9) is provided inside the box (1) and on the upper surface of multiple bipolar membranes (2); one end of the pull rod (9) is fixedly connected to the pull plate (10); the brush (11) is fixedly arranged on the lower surface of the pull plate (10), and the brush (11) is arranged in contact with the bipolar membrane (2); one end of the pull rod (9) away from the pull plate (10) extends to the outside of the box (1) and is fixedly provided with a same connecting plate (12); the cylinder (8) is fixedly arranged on the side wall of the box (1), and the end of the piston rod of the cylinder (8) is fixedly connected to the connecting plate (12).

3. A bipolar membrane electrodialysis device according to claim 2, characterized in that: A sealing sleeve (13) is fixedly embedded in the side wall of the box body (1), and the rod wall of the pull rod (9) slides through the interior of the sealing sleeve (13).

4. A bipolar membrane electrodialysis device according to claim 1, characterized in that: A slag removal port is arranged on the side wall of the box body (1) and above the plurality of bipolar membranes (2), and a sealing cover (14) is arranged inside the slag removal port.

5. A bipolar membrane electrodialysis device according to claim 1, characterized in that: A plurality of evenly distributed support rods (15) are fixedly provided on the inner side wall of the box body (1) and located below the bipolar membrane (2).

6. A bipolar membrane electrodialysis device according to claim 1, characterized in that: The limiting mechanism comprises a limiting plate (16) and a limiting bolt (17); the limiting plate (16) is fixedly arranged on the end of the rotating shaft (7); the limiting bolt (17) is plugged into the side wall of the limiting plate (16); and the side wall of the supporting seat (6) is provided with a limiting screw hole (18) matched with the limiting bolt (17).

7. A bipolar membrane electrodialysis device according to claim 6, characterized in that: The number of the limiting screw holes (18) is two, and the two limiting screw holes (18) are arranged at an angle of 180 degrees up and down.

8. A bipolar membrane electrodialysis device according to claim 1, characterized in that: The support seat (6) is a triangular seat.

9. A bipolar membrane electrodialysis device according to claim 2, characterized in that: The brush (11) is made of nylon bristles.

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