An electrodialysis industrial wastewater treatment device

Abstract

This utility model discloses an electrodialysis industrial wastewater treatment device, including a wastewater treatment tank. Two concave plates are installed inside the wastewater treatment tank, and rectangular frames are slidably connected within the concave plates. Ion exchange membranes are installed within the rectangular frames, and the two ion exchange membranes divide the wastewater treatment tank into a freshwater chamber and two concentrated water chambers, with the two concentrated water chambers located on either side of the freshwater chamber. Holding the positioning plate and moving it upwards causes the connecting rod to move upwards. When the connecting rod moves upwards, it causes the surrounding plate, filter screen, and partition plate to move upwards, compressing the second spring in the partition plate. Then, releasing the positioning plate causes the second spring to rebound, causing the connecting rod, surrounding plate, and filter screen to move downwards. This causes the surrounding plate to impact the baffle, generating vibration. The vibration of the surrounding plate causes the filter screen to vibrate. Since the surrounding plate and filter screen are horizontally arranged, the vibration facilitates the discharge of impurities from the filter screen. Repeatedly pulling the positioning plate upwards and then releasing it further improves the discharge of impurities from the filter screen.

Description

Technical Field

[0001] This utility model relates to the field of electrodialysis technology, and in particular to an electrodialysis industrial wastewater treatment device. Background Technology

[0002] Electrodialysis industrial wastewater treatment equipment is a device that uses the principle of electrodialysis to treat industrial wastewater. The basic principle of electrodialysis is to alternately arrange cation exchange membranes and anion exchange membranes between a pair of electrodes. Under the action of an applied DC electric field, ions in the water migrate in a directional manner. Cations will gather on the cathode side and move to the concentration chamber through the cation exchange membrane; anions will gather on the anode side and move to the concentration chamber through the anion exchange membrane.

[0003] Ion exchange membranes are an important component of electrodialysis. Publication number CN 222312809 U discloses a diffusion dialysis anion exchange membrane, which has good filtration and barrier capabilities for wastewater. Therefore, the anion exchange membrane is not prone to adhering to impurities during the treatment process, thus ensuring the effectiveness of the anion exchange membrane. In addition, its structure is relatively flexible, so it is easy to disassemble and maintain, thus avoiding inconvenience during use. Furthermore, it has cleaning capabilities, so even after long-term use, the flow rate of wastewater will not be affected by the adhesion and clogging of impurities, thus ensuring the effectiveness and efficiency of wastewater treatment.

[0004] The aforementioned prior art filters impurities in wastewater by setting up a filter screen to prevent impurities from affecting the ion exchange membrane. Then, a scraper is used to clean the filter screen to prevent impurities from clogging it. However, it should be noted that when the scraper cleans the impurities on the filter screen, it only removes the impurities attached to the surface of the filter screen. Some impurities are still clogging the filter pores of the filter screen, and these impurities cannot be cleaned by scraping them back and forth with the scraper. Utility Model Content

[0005] (a) Purpose of the utility model

[0006] In view of this, the purpose of this utility model is to propose an electrodialysis industrial wastewater treatment device. The technical problem to be solved is that the existing technology filters impurities in wastewater by setting up a filter screen to prevent impurities in the wastewater from affecting the ion exchange membrane. Then, a scraper is used to clean the filter screen to prevent impurities from clogging the filter screen. However, it should be noted that when the scraper cleans the impurities on the filter screen, it only scrapes off the impurities attached to the surface of the filter screen. There are still impurities clogging the filter screen pores. These impurities cannot be cleaned by scraping back and forth with the scraper.

[0007] (II) Technical Solution

[0008] To achieve the above-mentioned technical objectives, this utility model provides an electrodialysis industrial wastewater treatment device:

[0009] It includes a wastewater treatment tank, within which two concave plates are installed. Rectangular frames are slidably connected within the concave plates, and ion exchange membranes are installed within the rectangular frames. The two ion exchange membranes divide the wastewater treatment tank into a freshwater chamber and two concentrated water chambers, with the two concentrated water chambers located on either side of the freshwater chamber. Electrode plates are installed on the inner walls of both sides of the wastewater treatment tank. Concentrated water discharge pipes are fixed to the outer sides of both sides of the wastewater treatment tank, and these pipes are connected to their respective concentrated water chambers. A wastewater inlet pipe and a freshwater discharge pipe are fixed to the top and bottom of the front of the wastewater treatment tank, respectively, and both are connected to the freshwater chambers. Multiple slots are evenly spaced within the concave plates. Multiple rectangular concave plates, corresponding to the slots, are evenly spaced on one side of the concave plates. A surrounding plate is installed at the bottom of each rectangular concave plate, and two filter screens are fixed within the surrounding plate. The rectangular concave plates, the surrounding plate, and the filter screens seal the corresponding slots.

[0010] Preferably, a baffle is fixed at both bottom edges of the rectangular concave plate, and a guide rod is fixed at the top of the baffle. The guide rod passes through the surrounding plate, and the surrounding plate is slidably fitted onto the guide rod.

[0011] Preferably, a triangular plate is fixed to the top of the rectangular concave plate, and a connecting rod is fixed together inside the plurality of surrounding plates. The connecting rod passes through the triangular plate and the rectangular concave plate and slides within the triangular plate and the rectangular concave plate.

[0012] Preferably, an L-shaped plate is fixed to one side of the top of the concave plate, a cylinder is fixed inside the L-shaped plate, a positioning plate is fixed to the top of the connecting rod, a positioning groove is provided in the positioning plate, a positioning rod is slidably connected inside the cylinder, and the positioning rod can be embedded in the positioning groove.

[0013] Preferably, a pull rod is fixed to one end of the positioning rod, the pull rod passes through the cylinder and slides inside the cylinder, and a first spring is sleeved on the outside of the pull rod, one end of the first spring abuts against the cylinder, and the other end of the first spring abuts against the positioning rod.

[0014] Preferably, a partition is fixed to the outside of the connecting rod, and a second spring is sleeved on the outside of the connecting rod. One end of the second spring abuts against the L-shaped plate, and the other end of the second spring abuts against the partition.

[0015] Preferably, two U-shaped plates are fixed to the inner walls of both sides of the sewage treatment tank, and side plates are fixed to both sides of the concave plate. The side plates can be embedded in the U-shaped plates. The U-shaped plates and side plates are fixed together by a first bolt. Multiple mounting blocks are fixed to the top of the rectangular frame. The mounting blocks and the concave plates are fixed together by a second bolt.

[0016] As can be seen from the above technical solutions, this application has the following beneficial effects:

[0017] 1. Hold the positioning plate and move it upwards to move the connecting rod upwards. When the connecting rod moves upwards, it moves the surrounding plate, filter screen, and partition upwards, causing the partition to compress the second spring. Then release the positioning plate. At this time, the rebound of the second spring will cause the connecting rod, surrounding plate, and filter screen to move downwards, causing the surrounding plate to hit the baffle, thereby generating vibration. When the surrounding plate vibrates, it causes the filter screen to vibrate. Since the surrounding plate and filter screen are set horizontally, the vibration helps to discharge impurities from the filter screen. Pulling the positioning plate upwards and then releasing it repeatedly will better discharge impurities from the filter screen.

[0018] 2. When the filter screen needs cleaning, pull the lever to move the positioning rod, causing it to move out of the positioning groove. At this time, the positioning plate, connecting rod, surrounding plate, and filter screen can be moved upward. After the impurities on the filter screen are cleaned, the bottom of the surrounding plate and the baffle are in contact. Release the lever, and under the return force of the first spring, the positioning rod is embedded in the positioning groove, thereby fixing the positioning plate. That is, the connecting rod, surrounding plate, and filter screen are fixed, so that when cleaning sewage later, the sewage must pass through the filter screen before flowing from the tank opening to the ion exchange membrane. This method allows the positioning plate to be locked or unlocked according to the working state of the filter screen. When the positioning plate is locked, the filter screen can filter impurities in the sewage. When the positioning plate is unlocked, it is convenient to clean the impurities inside the filter screen. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0020] Figure 1 A schematic diagram of the structure of an electrodialysis industrial wastewater treatment device provided by this utility model;

[0021] Figure 2 A cross-sectional structural diagram of the rectangular frame and concave plate provided by this utility model;

[0022] Figure 3 A cross-sectional structural diagram of the concave plate provided by this utility model;

[0023] Figure 4 A partial structural schematic diagram of an electrodialysis industrial wastewater treatment device provided by this utility model;

[0024] Figure 5 Provided by this utility model Figure 2 A schematic diagram of the structure at point A in the middle.

[0025] Figure Descriptions: 1. Wastewater treatment tank; 2. Concave plate; 3. Rectangular frame; 4. Ion exchange membrane; 5. Freshwater chamber; 6. Concentrated water chamber; 7. Electrode plate; 8. Concentrated water discharge pipe; 9. Freshwater discharge pipe; 10. Wastewater inlet pipe; 11. Groove; 12. Rectangular concave plate; 13. Enclosure plate; 14. Filter screen; 15. Baffle plate; 16. Guide rod; 17. Triangular plate; 18. Connecting rod; 19. L-shaped plate; 20. Positioning plate; 21. Cylinder; 22. Positioning rod; 23. Positioning groove; 24. Pull rod; 25. First spring; 26. Partition plate; 27. Second spring; 28. U-shaped plate; 29. ​​Side plate; 30. First bolt; 31. Mounting block; 32. Second bolt. Detailed Implementation

[0026] The following description is exemplary in nature and is not intended to limit the scope, application, or use of this disclosure. It should be understood that in all these figures, the same or similar reference numerals indicate the same or similar parts and features. The figures are merely schematic representations of the concept and principles of embodiments of this disclosure and do not necessarily show the specific dimensions and scale of the various embodiments of this disclosure. Certain details or structures of embodiments of this disclosure may be exaggerated in particular portions of certain figures.

[0027] Reference Figure 1-5 :

[0028] In one embodiment of this utility model, an electrodialysis industrial wastewater treatment device is provided, including a wastewater treatment tank 1. Two concave plates 2 are disposed within the wastewater treatment tank 1, and rectangular frames 3 are slidably connected within the concave plates 2. Ion exchange membranes 4 are installed within the rectangular frames 3, dividing the wastewater treatment tank 1 into a freshwater chamber 5 and two concentrated water chambers 6. The two concentrated water chambers 6 are located on both sides of the freshwater chamber 5. Electrode plates 7 are installed on the inner walls of both sides of the wastewater treatment tank 1. Concentrated water discharge pipes 8 are fixed to the outer sides of both sides of the wastewater treatment tank 1, and the concentrated water discharge pipes 8 are connected to the corresponding concentrated water chambers 6. A wastewater inlet pipe 10 and a freshwater discharge pipe 9 are fixed to the top and bottom of the front of the wastewater treatment tank 1, respectively, and the freshwater discharge pipes 9 and the wastewater inlet pipe 10 are connected to the corresponding concentrated water chambers 6. The water inlet pipe 10 is connected to the fresh water chamber 5. Multiple slots 11 are equally spaced in the concave plate 2. Multiple rectangular concave plates 12 corresponding to the slots 11 are fixed at equal intervals on one side of the concave plate 2. A surrounding plate 13 is provided at the bottom of the rectangular concave plate 12. Two filter screens 14 are fixed in the surrounding plate 13. The rectangular concave plate 12, the surrounding plate 13, and the filter screens 14 seal the corresponding slots 11. Two U-shaped plates 28 are fixed on both sides of the inner wall of the sewage treatment tank 1. Side plates 29 are fixed on both sides of the concave plate 2. The side plates 29 can be embedded in the U-shaped plates 28. The U-shaped plates 28 and the side plates 29 are fixed together by the first bolt 30. Multiple mounting blocks 31 are fixed on the top of the rectangular frame 3. The mounting blocks 31 and the concave plate 2 are fixed together by the second bolt 32.

[0029] It should be noted that the two electrode plates 7 are the anode plate and the cathode plate, respectively, and the ion exchange membranes 4 in the two rectangular frames 3 are the anion exchange membrane and the cation exchange membrane, respectively. The industrial wastewater treatment equipment provided in this embodiment has the same treatment principle as the existing electrodialysis. Both use two relatively arranged electrode plates 7 to form an electric field and use two ion exchange membranes 4 to selectively screen anions and cations in the wastewater, thereby achieving the purpose of removing heavy metal ions from the wastewater.

[0030] Among them, baffles 15 are fixed at both bottom edges of the rectangular concave plate 12, and guide rods 16 are fixed at the top of the baffles 15. The guide rods 16 pass through the surrounding plate 13, and the surrounding plate 13 is slidably fitted on the guide rods 16. A triangular plate 17 is fixed at the top of the rectangular concave plate 12, and a connecting rod 18 is fixed in the multiple surrounding plates 13. The connecting rod 18 passes through the triangular plate 17 and the rectangular concave plate 12 and slides within the triangular plate 17 and the rectangular concave plate 12.

[0031] Furthermore, an L-shaped plate 19 is fixed to one side of the top of the concave plate 2, and a cylinder 21 is fixed inside the L-shaped plate 19. A positioning plate 20 is fixed to the top of the connecting rod 18, and a positioning groove 23 is provided in the positioning plate 20. A positioning rod 22 is slidably connected inside the cylinder 21. The positioning rod 22 can be embedded in the positioning groove 23. A pull rod 24 is fixed to one end of the positioning rod 22. The pull rod 24 passes through the cylinder 21 and slides inside the cylinder 21. A first spring 25 is sleeved on the outside of the pull rod 24. One end of the first spring 25 abuts against the cylinder 21, and the other end of the first spring 25 abuts against the positioning rod 22. A partition plate 26 is fixed to the outside of the connecting rod 18, and a second spring 27 is sleeved on the outside of the connecting rod 18. One end of the second spring 27 abuts against the L-shaped plate 19, and the other end of the second spring 27 abuts against the partition plate 26.

[0032] In this embodiment, the filter screen 14 protects the ion exchange membrane 4 during use. The filter screen 14 blocks impurities in the wastewater, preventing impurities from adhering to the ion exchange membrane 4 during wastewater treatment, thus extending its service life and cleaning cycle. When the filter screen 14 has filtered out a large amount of impurities and needs cleaning, first pull the lever 24 to move the positioning rod 22, causing the positioning rod 22 to move out of the positioning groove 23. Then, the positioning plate 20 can be grasped and moved upwards. As the positioning plate 20 moves upwards, the connecting rod 18 moves upwards, which in turn moves the surrounding plate 13 and the filter screen 14 upwards. The guide rod 16 restricts the upward movement path of the enclosure 13 and the filter screen 14. When the connecting rod 18 moves upward, it drives the partition 26 to move upward, causing the partition 26 to compress the second spring 27. Then the positioning plate 20 is released. At this time, the elasticity of the second spring 27 drives the connecting rod 18, the enclosure 13, and the filter screen 14 to move downward, causing the enclosure 13 to hit the baffle 15, thereby generating vibration. When the enclosure 13 vibrates, it drives the filter screen 14 to vibrate. Since the enclosure 13 and the filter screen 14 are set horizontally, the vibration is conducive to the discharge of impurities in the filter screen 14. By repeatedly pulling the positioning plate 20 upward and then releasing it, the impurities in the filter screen 14 can be discharged better.

[0033] After the impurities on the filter screen 14 are cleaned, the bottom of the enclosure 13 and the baffle 15 are attached together. Then, the pull rod 24 is released. At this time, the positioning rod 22 is moved by the rebound force of the first spring 25, so that the positioning rod 22 is embedded in the positioning groove 23, thereby fixing the positioning plate 20. That is, the connecting rod 18, the enclosure 13, and the filter screen 14 are fixed, so that when cleaning the sewage later, the sewage must pass through the filter screen 14 before it can flow from the groove 11 to the ion exchange membrane 4.

[0034] The exemplary implementation of the solution proposed in this disclosure has been described in detail above with reference to preferred embodiments. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the spirit of this disclosure, and various combinations can be made to the various technical features and structures proposed in this disclosure without exceeding the protection scope of this disclosure, which is determined by the appended claims.

Claims

1. An electrodialysis industrial wastewater treatment device, comprising a wastewater treatment tank (1), characterized in that, The wastewater treatment tank (1) is provided with two concave plates (2), and a rectangular frame (3) is slidably connected inside the concave plates (2). An ion exchange membrane (4) is installed inside the rectangular frame (3). The two ion exchange membranes (4) divide the wastewater treatment tank (1) into a freshwater chamber (5) and two concentrated water chambers (6). The two concentrated water chambers (6) are located on both sides of the freshwater chamber (5). Electrode plates (7) are installed on the inner walls of both the left and right sides of the wastewater treatment tank (1). Concentrated water discharge pipes (8) are fixed on the outer sides of both the left and right sides of the wastewater treatment tank (1), and the concentrated water discharge pipes (8) are connected to the corresponding concentrated water chambers (6). The top and bottom of the front of the treatment tank (1) are respectively fixed with a sewage inlet pipe (10) and a fresh water outlet pipe (9), and both the fresh water outlet pipe (9) and the sewage inlet pipe (10) are connected to the fresh water chamber (5). Multiple slots (11) are equally spaced in the concave plate (2). Multiple rectangular concave plates (12) corresponding to the slots (11) are equally spaced on one side of the concave plate (2). A surrounding plate (13) is provided at the bottom of the rectangular concave plate (12). Two filter screens (14) are fixed in the surrounding plate (13). The rectangular concave plate (12), the surrounding plate (13), and the filter screens (14) seal the corresponding slots (11). The rectangular concave plate (12) has baffles (15) fixed at both bottom edges, and a guide rod (16) fixed at the top of the baffle (15). The guide rod (16) passes through the surrounding plate (13), and the surrounding plate (13) is slidably fitted on the guide rod (16). A triangular plate (17) is fixed to the top of the rectangular concave plate (12), and a connecting rod (18) is fixed in the interior of the multiple surrounding plates (13). The connecting rod (18) passes through the triangular plate (17) and the rectangular concave plate (12) and slides within the triangular plate (17) and the rectangular concave plate (12). An L-shaped plate (19) is fixed to one side of the top of the concave plate (2), and a cylinder (21) is fixed inside the L-shaped plate (19). A positioning plate (20) is fixed to the top of the connecting rod (18), and a positioning groove (23) is provided inside the positioning plate (20). A positioning rod (22) is slidably connected inside the cylinder (21), and the positioning rod (22) can be embedded in the positioning groove (23). A partition plate (26) is fixed on the outside of the connecting rod (18), and a second spring (27) is sleeved on the outside of the connecting rod (18). One end of the second spring (27) abuts against the L-shaped plate (19), and the other end of the second spring (27) abuts against the partition plate (26).

2. The electrodialysis industrial wastewater treatment equipment according to claim 1, characterized in that, One end of the positioning rod (22) is fixed with a pull rod (24). The pull rod (24) passes through the cylinder (21) and slides inside the cylinder (21). A first spring (25) is sleeved on the outside of the pull rod (24). One end of the first spring (25) abuts against the cylinder (21), and the other end of the first spring (25) abuts against the positioning rod (22).

3. The electrodialysis industrial wastewater treatment equipment according to claim 1, characterized in that, The sewage treatment tank (1) has two U-shaped plates (28) fixed on both sides of its inner wall. The concave plate (2) has side plates (29) fixed on both sides. The side plates (29) can be embedded in the U-shaped plates (28). The U-shaped plates (28) and the side plates (29) are fixed together by a first bolt (30). The top of the rectangular frame (3) has multiple mounting blocks (31). The mounting blocks (31) and the concave plate (2) are fixed together by a second bolt (32).

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