Composite cleaning device for electrodialysis system

Abstract

The utility model discloses a composite cleaning device used in an electrodialysis system, which relates to the technical field of electrodialysis, and comprises a dialysis box body, a plurality of ionic membranes are fixedly arranged in the dialysis box body, and an electrode water chamber, a concentrated water chamber and a fresh water chamber are formed in the dialysis box body through the plurality of ionic membranes; the two electrode water chambers are positioned on two sides in the dialysis box body; the concentrated water chamber is adjacent to the fresh water chamber; cleaning plates are arranged in the concentrated water chamber and the fresh water chamber, triangular valves are fixedly mounted at the positions, corresponding to the cleaning plates, of the outer wall of the dialysis box body, and liquid inlet cavities, air inlet cavities and communicating cavities are formed in the triangular valves; through the arrangement of a baffle and a sealing rubber pad in a triangular valve, cleaning liquid and nitrogen can be sequentially supplied into the cleaning plate through the triangular valve, the nitrogen can further clean and blow-dry the cleaning liquid and impurities left in the ionic membrane and the cleaning plate, the influence of the cleaning liquid on next dialysis is avoided, the cleaning effect on the ionic membrane is improved, and the service life of the cleaning plate is prolonged. And the cleaning efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of electrodialysis technology, and in particular to a composite cleaning device for an electrodialysis system. Background Technology

[0002] During the operation of electrodialysis equipment, the deionization and impurity removal processes inevitably lead to membrane fouling, affecting membrane performance. To restore membrane performance, common methods used include membrane stack flushing, chemical cleaning, and manual cleaning by disassembling the membrane stack.

[0003] An electrodialysis desalination device disclosed in Chinese patent CN215916999U includes a dialysis tank with tank fixing plates on both sides. An ion-exchange membrane is installed inside the dialysis tank, forming an electrode water chamber, a concentrate chamber, and a desalination chamber through the ion-exchange membrane. A cleaning mechanism is also provided inside the dialysis tank. The bottom of the dialysis tank is open, and a lower fixing tank is installed at the bottom of the dialysis tank. The cleaning mechanism is located between the ion-exchange membranes. The ion-exchange membrane includes a liquid guide plate body, which is hollow inside. Liquid guide holes are opened on both sides of the outer wall of the liquid guide plate body. An outlet pipe and an inlet pipe are respectively provided at the upper and lower ends of the liquid guide plate body.

[0004] When the existing device is in use, the solution is sprayed onto the ion membrane through the liquid guide hole to clean the ion membrane. However, simply spraying the solution onto the ion membrane for cleaning has a very small cleaning effect and cannot achieve deep cleaning. In addition, some of the waste liquid generated during the cleaning process will remain in the main body of the liquid guide plate and cannot be discharged, thus contaminating the material to be purified, interfering with the normal electrodialysis purification process, and affecting the next dialysis.

[0005] To address the aforementioned problems, this invention proposes a composite cleaning device for use in electrodialysis systems. Utility Model Content

[0006] To address the problems existing in the background technology, this utility model proposes a composite cleaning device for electrodialysis systems.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a composite cleaning device for an electrodialysis system, comprising a dialysis tank, wherein multiple ion exchange membranes are fixedly installed inside the dialysis tank, and an electrode water chamber, a concentrate chamber, and a desalination chamber are formed inside the dialysis tank through the multiple ion exchange membranes; two electrode water chambers are located on both sides inside the dialysis tank; two concentrate chambers are arranged on both sides of the desalination chamber; a cleaning plate is provided in both the concentrate chamber and the desalination chamber; a triangular valve is fixedly installed on the outer wall of the dialysis tank at the position corresponding to the cleaning plate, and each triangular valve has an inlet chamber, an air inlet chamber, and a connecting chamber inside; the connecting chambers are all connected to the corresponding cleaning plates; a cleaning liquid inlet pipe and an air inlet pipe are fixedly connected to the outside of the triangular valve.

[0008] Preferably, an electrode water inlet pipe is fixedly connected to the upper end of the dialysis chamber at the position corresponding to the electrode water chamber; an electrode water drain pipe is fixedly connected to the lower end of the dialysis chamber at the position corresponding to the electrode water chamber; an electrode plate is fixedly installed on the inner wall of the dialysis chamber corresponding to the two electrode water chambers; and conductive rods are fixedly connected to both sides of the outer wall of the dialysis chamber. The electrode plates and conductive rods are fixedly connected by connectors.

[0009] Preferably, a concentrated water inlet pipe is fixedly connected to the upper end of the dialysis tank at the position corresponding to the concentrated water chamber; a concentrated water outlet pipe is fixedly connected to the lower end of the dialysis tank at the position corresponding to the concentrated water chamber; a fresh water inlet pipe is fixedly connected to the upper end of the dialysis tank at the position corresponding to the fresh water chamber; and a fresh water outlet pipe is fixedly connected to the lower end of the dialysis tank at the position corresponding to the fresh water chamber.

[0010] Preferably, the cleaning plate is hollow, and multiple spray holes are provided on both sides of the cleaning plate.

[0011] Preferably, both the liquid inlet chamber and the air inlet chamber are connected to the connecting chamber; a rotating shaft is fixedly installed inside the triangular valve at the corner corresponding to the liquid inlet chamber and the air inlet chamber; a baffle is rotatably installed on the rotating shaft, and sealing gaskets are fixedly installed on both sides of the baffle.

[0012] Preferably, the cleaning fluid inlet pipe is connected to the inside of the inlet chamber; the air inlet pipe is connected to the inside of the air inlet chamber.

[0013] Beneficial effects

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This composite cleaning device for electrodialysis systems, through a baffle and sealing gasket inside a triangular valve, allows for the sequential supply of cleaning fluid and nitrogen gas to the cleaning plate. The nitrogen gas further cleans and dries the residual cleaning fluid and impurities inside the ion exchange membrane and the cleaning plate, preventing the cleaning fluid from affecting the next dialysis cycle, thus improving the cleaning effect on the ion exchange membrane and ultimately increasing cleaning efficiency. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:

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

[0018] Figure 2 This is a schematic internal cross-sectional view of the present invention;

[0019] Figure 3 This is a cross-sectional view of the triangular valve of this utility model;

[0020] Figure 4 This utility model Figure 3 Enlarged schematic diagram of part A in the middle.

[0021] Reference numerals in the attached diagram: 1. Dialysis chamber; 2. Electrode water chamber; 3. Concentrate chamber; 4. Desalinate chamber; 5. Ion exchange membrane; 6. Electrode plate; 7. Conductive connecting rod; 8. Concentrate inlet pipe; 9. Concentrate outlet pipe; 10. Desalinate inlet pipe; 11. Desalinate outlet pipe; 12. Cleaning plate; 13. Spray nozzle; 14. Angle valve; 15. Cleaning solution inlet pipe; 16. Air inlet pipe; 17. Liquid inlet chamber; 18. Air inlet chamber; 19. Connecting chamber; 20. Baffle; 21. Sealing gasket. Detailed Implementation

[0022] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0023] Please see Figure 1-4 This utility model provides a technical solution: a composite cleaning device for an electrodialysis system, comprising a dialysis tank 1, with multiple ion exchange membranes 5 fixedly installed inside the dialysis tank 1. The ion exchange membranes 5 form an electrode water chamber 2, a concentrate chamber 3, and a desalination chamber 4 inside the dialysis tank 1. Two electrode water chambers 2 are located on both sides inside the dialysis tank 1. Two concentrate chambers 3 are located on both sides of the desalination chamber 4.

[0024] An electrode water inlet pipe is fixedly connected to the upper end of the dialysis tank 1 at the position corresponding to the electrode water chamber 2. An electrode water drain pipe is fixedly connected to the lower end of the dialysis tank 1 at the position corresponding to the electrode water chamber 2.

[0025] Electrode plates 6 are fixedly installed inside the two electrode water chambers 2 on the inner wall of the dialysis tank 1. Conductive rods 7 are fixedly connected to both sides of the outer wall of the dialysis tank 1. The electrode plates 6 and the conductive rods 7 are fixedly connected by connectors.

[0026] A concentrated water inlet pipe 8 is fixedly connected to the upper end of the dialysis tank 1 at the position corresponding to the concentrated water chamber 3. A concentrated water outlet pipe 9 is fixedly connected to the lower end of the dialysis tank 1 at the position corresponding to the concentrated water chamber 3. A fresh water inlet pipe 10 is fixedly connected to the upper end of the dialysis tank 1 at the position corresponding to the fresh water chamber 4. A fresh water outlet pipe 11 is fixedly connected to the lower end of the dialysis tank 1 at the position corresponding to the fresh water chamber 4.

[0027] Cleaning plates 12 are installed in both the concentrate chamber 3 and the desalination chamber 4. The cleaning plates 12 are fixedly connected to the inner wall of the dialysis tank 1.

[0028] The cleaning plate 12 is hollow, and multiple spray holes 13 are provided on both sides of the cleaning plate 12. The spray holes 13 correspond to the ion membrane 5.

[0029] An angle valve 14 is fixedly installed on the outer wall of the dialysis tank 1 at the position corresponding to the cleaning plate 12. The interior of each angle valve 14 is provided with a liquid inlet chamber 17, an air inlet chamber 18, and a connecting chamber 19. The connecting chamber 19 is connected to the interior of the corresponding cleaning plate 12.

[0030] Cleaning fluid inlet pipe 15 and air inlet pipe 16 are fixedly connected to the outside of the angle valve 14.

[0031] Specifically, both the liquid inlet chamber 17 and the air inlet chamber 18 are connected to the connecting chamber 19. A rotating shaft is fixedly installed inside the triangular valve 14 at the corner corresponding to the liquid inlet chamber 17 and the air inlet chamber 18. A baffle 20 is rotatably mounted on the rotating shaft, and sealing gaskets 21 are fixedly installed on both sides of the baffle 20. The baffle 20 and the sealing gaskets 21 can seal either the liquid inlet chamber 17 or the air inlet chamber 18.

[0032] The cleaning fluid inlet pipe 15 is connected to the inside of the inlet chamber 17. The air inlet pipe 16 is connected to the inside of the air inlet chamber 18.

[0033] Working principle:

[0034] In use, the solution is introduced into the electrode water chamber 2, the concentrate chamber 3, and the desalination chamber 4 inside the dialysis tank 1 through the electrode water inlet pipe, the concentrate water inlet pipe 8, and the desalination water inlet pipe 10, respectively. At the same time, the electrode plate 6 is energized, so that the ions in the desalination chamber 4 move to the concentrate chamber 3 through the ion membrane 5. The solutions in the electrode water chamber 2, the concentrate chamber 3, and the desalination chamber 4 can be discharged through the electrode water drain pipe, the concentrate drain pipe 9, and the desalination water drain pipe 11.

[0035] When cleaning of the ion exchange membrane 5 is required, after all the solution is drained, cleaning solution is pumped into the inlet chamber 17 through the cleaning solution inlet pipe 15. The cleaning solution pushes the baffle 20 to rotate, causing the baffle 20 to rotate until it contacts the air inlet chamber 18, thus sealing the air inlet chamber 18 with the baffle 20 and the sealing gasket 21. This connects the inlet chamber 17 to the connecting chamber 19. At this time, the cleaning solution enters the cleaning plate 12 through the connecting chamber 19 and is sprayed from the nozzle 13 onto the ion exchange membranes 5 on both sides, rinsing the ion exchange membranes 5. Impurities on the ion exchange membranes 5 flow downward with the cleaning solution and are eventually discharged from the corresponding concentrate drain pipe 9 and desalinate drain pipe 11.

[0036] Nitrogen gas is then introduced into the air inlet chamber 18 through the air inlet pipe 16. The nitrogen gas pushes the baffle 20 to flip, connecting the air inlet chamber 18 with the connecting chamber 19. The liquid inlet chamber 17 is sealed by the baffle 20 and the sealing gasket 21. At this time, the nitrogen gas enters the cleaning plate 12 through the connecting chamber 19 and is sprayed from the nozzle 13 onto the ion membranes 5 on both sides. This further cleans and dries the residual cleaning liquid and impurities inside the ion membranes 5 and the cleaning plate 12. Excess cleaning liquid enters the corresponding concentrate drain pipe 9 and desalination drain pipe 11 and is eventually blown out by the nitrogen gas. At the same time, the nitrogen gas dries the concentrate drain pipe 9 and desalination drain pipe 11 to prevent residual cleaning liquid from affecting the next dialysis.

[0037] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A composite cleaning device for an electrodialysis system, comprising a dialysis tank (1), characterized in that: Multiple ion exchange membranes (5) are fixedly installed inside the dialysis chamber (1). The dialysis chamber (1) forms an electrode water chamber (2), a concentrate chamber (3), and a desalination chamber (4) through the multiple ion exchange membranes (5). Two electrode water chambers (2) are located on both sides inside the dialysis chamber (1). Two concentrate chambers (3) are located on both sides of the desalination chamber (4). Cleaning plates (12) are installed in both the concentrate chamber (3) and the desalination chamber (4). An angle valve (14) is fixedly installed on the outer wall of the dialysis chamber (1) at the position corresponding to the cleaning plate (12). The angle valve (14) is provided with an inlet chamber (17), an air inlet chamber (18), and a connecting chamber (19). The connecting chamber (19) is connected to the corresponding cleaning plate (12). A cleaning liquid inlet pipe (15) and an air inlet pipe (16) are fixedly connected to the outside of the angle valve (14).

2. The composite cleaning device for an electrodialysis system according to claim 1, characterized in that: The upper end of the dialysis tank (1) is fixedly connected to the position corresponding to the electrode water chamber (2) with an electrode water inlet pipe; the lower end of the dialysis tank (1) is fixedly connected to the position corresponding to the electrode water chamber (2) with an electrode water drain pipe; the inner wall of the dialysis tank (1) is fixedly installed with electrode plates (6) corresponding to the two electrode water chambers (2); the outer walls of the dialysis tank (1) are fixedly connected with conductive rods (7) on both sides; the electrode plates (6) and conductive rods (7) are fixedly connected by connectors.

3. The composite cleaning device for an electrodialysis system according to claim 1, characterized in that: The upper end of the dialysis tank (1) is fixedly connected to the position corresponding to the concentrated water chamber (3) with a concentrated water inlet pipe (8); the lower end of the dialysis tank (1) is fixedly connected to the position corresponding to the concentrated water chamber (3) with a concentrated water outlet pipe (9); the upper end of the dialysis tank (1) is fixedly connected to the position corresponding to the desalinated water chamber (4) with a desalinated water inlet pipe (10); and the lower end of the dialysis tank (1) is fixedly connected to the position corresponding to the desalinated water chamber (4) with a desalinated water outlet pipe (11).

4. A composite cleaning device for an electrodialysis system according to claim 1, characterized in that: The cleaning plate (12) is hollow, and multiple spray holes (13) are provided on both sides of the cleaning plate (12).

5. A composite cleaning device for an electrodialysis system according to claim 1, characterized in that: The liquid inlet chamber (17) and the air inlet chamber (18) are both connected to the connecting chamber (19); a rotating shaft is fixedly installed inside the triangular valve (14) at the corner corresponding to the liquid inlet chamber (17) and the air inlet chamber (18); a baffle (20) is rotatably installed on the rotating shaft, and a sealing gasket (21) is fixedly installed on both sides of the baffle (20).

6. A composite cleaning device for an electrodialysis system according to claim 1, characterized in that: The cleaning fluid inlet pipe (15) is connected to the inside of the inlet chamber (17); the air inlet pipe (16) is connected to the inside of the air inlet chamber (18).

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