A storage device for nuclear-contaminated wastewater with multiple filtration systems

Abstract

This utility model relates to the field of nuclear contaminated wastewater treatment technology, and discloses a nuclear contaminated wastewater storage device with multiple filtration functions. The device includes a storage tank, a metal filter screen fixedly connected inside the storage tank, a hydraulic cylinder (first type) fixedly connected inside the storage tank, a moving column (first type) fixedly connected to the drive end of the hydraulic cylinder (first type), a second hydraulic cylinder fixedly connected inside the storage tank, a moving column (second type) fixedly connected to the drive end of the hydraulic cylinder (second type), multiple adjusting plates (second type) fixedly connected to the outside of the moving column (first type), and multiple adjusting plates (first type) fixedly connected to the outside of the moving column (second type). A cleaning assembly is installed inside the storage tank. In this utility model, for different types of nuclear wastewater, the filter aperture of the metal filter screen needs to be adjusted. Activating the first hydraulic cylinder pulls the moving column (first type), causing the adjusting plates (second type) to move; simultaneously activating the second hydraulic cylinder pushes the moving column (second type), causing the adjusting plates (first type) to move.

Description

Technical Field

[0001] This utility model relates to the field of nuclear contaminated wastewater treatment technology, and in particular to a nuclear contaminated wastewater storage device with multiple filtration functions. Background Technology

[0002] The multi-filtration nuclear wastewater storage device is mainly used to properly store and purify nuclear wastewater. The core is a storage tank with a wastewater inlet and a feeding inlet at the top. It is equipped with an internal stirring mechanism to ensure that the added precipitant is in full contact with the nuclear wastewater, causing trace amounts of radioactive nuclides to co-precipitate. The bottom of the storage tank is connected to a first connecting pipe with a stop valve. The other end of the pipe is connected to a first filter box. The first filter screen in the box can block most of the precipitated radioactive nuclides. The wastewater enters the second filter box through a second connecting pipe and is filtered more finely by the second filter screen with smaller mesh. After meeting the standards, it is discharged from the outlet pipe, realizing the multi-stage purification and storage of nuclear wastewater.

[0003] The device operates on the principle of a synergistic mechanism of "pretreatment - multi-stage filtration - safe storage". Nuclear wastewater first enters the pretreatment tank, where a special precipitant is added. Through adsorption and co-precipitation, radioactive nuclides such as strontium and cesium are formed into flocculent precipitates. The wastewater then flows into the primary filtration unit, where large particles of precipitate are intercepted by a high-precision metal filter screen. It then enters the secondary filtration unit, where small molecule radioactive substances and heavy metal ions are adsorbed by activated carbon and ion exchange resin columns.

[0004] Nuclear wastewater has a complex composition, with significant differences in the size and concentration of radioactive particles between different batches. Filter plates with fixed pore sizes are difficult to adapt to the changing treatment needs. When dealing with small particulate pollutants, pore sizes that are too large can lead to incomplete interception, increasing the pressure on subsequent treatment. On the other hand, when treating wastewater containing a large number of large particles, fixed small pore sizes can frequently cause blockages, requiring frequent shutdowns for cleaning and reducing treatment efficiency. Therefore, a nuclear wastewater storage device with multiple filtration functions is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a nuclear contaminated wastewater storage device with multiple filtration functions, aiming to improve the problem of the inability to adjust the pore size of the filter plate in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A nuclear-contaminated wastewater storage device with multiple filtration systems includes a storage tank, a metal filter screen fixedly connected inside the storage tank, a hydraulic cylinder 1 fixedly connected inside the storage tank, a movable column 1 fixedly connected to the drive end of the hydraulic cylinder 1, a second hydraulic cylinder fixedly connected inside the storage tank, a second movable column 2 fixedly connected to the drive end of the second hydraulic cylinder, multiple adjusting plates 2 fixedly connected to the outside of the first movable column, multiple adjusting plates 1 fixedly connected to the outside of the second movable column, and a cleaning assembly installed inside the storage tank.

[0008] As a further description of the above technical solution:

[0009] The cleaning component includes a second motor, a rotating plate fixedly connected to the drive end of the second motor, a follower plate rotatably connected to the other end of the rotating plate, and a scraper rotatably connected to the other end of the follower plate.

[0010] As a further description of the above technical solution:

[0011] The storage box is externally fixedly connected to two limiting blocks, and a waste bin is slidably connected to the outside of the two limiting blocks. A movable plate is slidably connected to the outside of the two limiting blocks.

[0012] As a further description of the above technical solution:

[0013] The waste bin is fixedly connected to a locking plate on the outside, the movable plate is fixedly connected to a base on the outside, the base is fixedly connected to a fixed shaft on the inside, a torsion spring is sleeved on the outside of the fixed shaft, a pull plate is rotatably connected to the outside of the fixed shaft, and a fixed frame is rotatably connected to the outside of the pull plate.

[0014] As a further description of the above technical solution:

[0015] A motor is fixedly connected to the outside of the storage box, and a stirring rod is fixedly connected to the drive end of the motor.

[0016] As a further description of the above technical solution:

[0017] The storage box is fixedly connected to an inlet pipe and an outlet pipe.

[0018] As a further description of the above technical solution:

[0019] An activated carbon plate is fixedly connected inside the storage box; a ceramic membrane is fixedly connected inside the storage box; and an ion exchange resin is fixedly connected inside the storage box.

[0020] As a further description of the above technical solution:

[0021] The second motor is externally fixedly connected to the outside of the storage box, the first adjustment plate is externally slidably connected to the inside of the metal filter screen, and the second adjustment plate is externally slidably connected to the inside of the metal filter screen.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, for different nuclear wastewater, it is necessary to adjust the pore size of the metal filter screen. Start hydraulic cylinder one to pull moving column one, which drives adjusting plate two to move. At the same time, start hydraulic cylinder two to push moving column two, which drives adjusting plate one to move. Adjusting plate one and adjusting plate two move towards each other, changing the pore size of the metal filter screen to adapt to the filtration requirements of different nuclear wastewater.

[0024] 2. In this utility model, when there are too many large particles of impurities, the second motor is started. The second motor drives the rotating plate to rotate, the rotating plate drives the follower plate to rotate, and the follower plate drives the scraper to move, so that the scraper cleans the surface of the metal filter screen and sweeps the dirt on the surface into the waste bin. If there are too many impurities in the waste bin, the waste bin is pulled out. The waste bin drives the moving plate to move, pulls the pull plate, drives the fixed frame to rotate, so that the fixed frame is disengaged from the locking plate, and then the moving plate seals the cleaning groove of the storage box. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of a nuclear-contaminated wastewater storage device with multiple filtration functions proposed in this utility model.

[0026] Figure 2 This is a schematic diagram of the follower plate of a nuclear contaminated wastewater storage device with multiple filtration functions proposed in this utility model;

[0027] Figure 3 This is a schematic diagram of the structure of a metal filter screen for a nuclear-contaminated wastewater storage device with multiple filtration functions proposed in this utility model.

[0028] Figure 4 This is a schematic diagram of the structure of a movable plate of a nuclear-contaminated wastewater storage device with multiple filtration functions proposed in this utility model.

[0029] Figure 5 for Figure 3 Enlarged view of point A in the middle;

[0030] Figure 6 for Figure 2 Enlarged view of point B in the middle.

[0031] Legend:

[0032] 1. Storage box; 2. Inlet pipe; 3. Outlet pipe; 4. Motor 1; 5. Waste bin; 6. Moving plate; 7. Limiting block; 8. Motor 2; 9. Rotating plate; 10. Follower plate; 11. Scraper; 12. Metal filter screen; 13. Activated carbon plate; 14. Ceramic membrane; 15. Ion exchange resin; 16. Stirring rod; 17. Hydraulic cylinder 1; 18. Moving column 1; 19. Hydraulic cylinder 2; 20. Moving column 2; 21. Adjusting plate 1; 22. Adjusting plate 2; 23. Base; 24. Fixed shaft; 25. Torsion spring; 26. Pull plate; 27. Fixed frame; 28. Clamping plate. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Reference Figure 1 , Figure 3 and Figure 5 This utility model provides an embodiment of a nuclear-contaminated wastewater storage device with multiple filtration systems, comprising a storage tank 1. A metal filter screen 12 is fixedly connected inside the storage tank 1. The metal filter screen 12 is used for preliminary filtration of the nuclear-contaminated wastewater, intercepting larger particulate pollutants. A hydraulic cylinder 17 is fixedly connected inside the storage tank 1, providing linear driving force as a power source. A moving column 18 is fixedly connected to the drive end of the hydraulic cylinder 17, and the moving column 18 moves linearly under the drive of the hydraulic cylinder 17. A second hydraulic cylinder 19 is fixedly connected inside the storage tank 1, providing linear driving force as a power source. A movable column 20 is fixedly connected to the drive end of cylinder 2 19. The movable column 20 moves linearly under the drive of hydraulic cylinder 2 19. Multiple adjusting plates 22 are fixedly connected to the outside of movable column 1 18. The adjusting plates 22 move synchronously with the movement of movable column 1 18. Multiple adjusting plates 21 are fixedly connected to the outside of movable column 20. The adjusting plates 21 move synchronously with the movement of movable column 20. The outside of adjusting plates 21 is slidably connected to the inside of metal filter screen 12. The outside of adjusting plates 22 is slidably connected to the inside of metal filter screen 12. Adjusting plates 21 and 22 move towards each other to adjust the aperture of metal filter screen 12.

[0035] Reference Figure 1 and Figure 2The storage box 1 is equipped with a cleaning assembly, which includes a second motor 8. The second motor 8 serves as a power source to provide rotational driving force. A rotating plate 9 is fixedly connected to the drive end of the second motor 8. The rotating plate 9 rotates under the drive of the second motor 8. A follower plate 10 is rotatably connected to the other end of the rotating plate 9. The rotation of the rotating plate 9 causes the follower plate 10 to swing. A scraper 11 is rotatably connected to the other end of the follower plate 10. The swing of the follower plate 10 causes the scraper 11 to reciprocate and scrape the top of the metal filter screen 12. Two limiting blocks 7 are fixedly connected to the outside of the storage box 1. A waste bin 5 is slidably connected to the outside of the two limiting blocks 7. The waste bin 5 collects the cleaned waste. A moving plate is slidably connected to the outside of the two limiting blocks 7. 6. The movable plate 6 can slide along the limiting block 7 to adjust its position. The waste bin 5 is externally fixedly connected to a locking plate 28. The movable plate 6 is externally fixedly connected to a base 23, which provides installation support. The base 23 is internally fixedly connected to a fixed shaft 24. A torsion spring 25 is sleeved on the outside of the fixed shaft 24. The torsion spring 25 provides torsional force through elastic deformation. A pull plate 26 is rotatably connected to the outside of the fixed shaft 24. The pull plate 26 can rotate around the fixed shaft 24 to achieve locking or disengagement operations. A fixed frame 27 is rotatably connected to the outside of the pull plate 26. The fixed frame 27 achieves locking or disengagement with the locking plate 28 through the rotation of the pull plate 26. The motor 8 is externally fixedly connected to the outside of the storage box 1 to ensure that the motor 8 is stably fixed.

[0036] Reference Figure 2 , Figure 4 and Figure 6 The storage tank 1 is externally connected to a motor 4, which provides rotational driving force. A stirring rod 16 is fixedly connected to the drive end of the motor 4. The stirring rod 16 rotates under the drive of the motor 4 to stir the nuclear-contaminated wastewater in the storage tank 1, so that the wastewater is mixed evenly and the subsequent filtration effect is enhanced. An inlet pipe 2 is fixedly connected to the outside of the storage tank 1. The inlet pipe 2 is used to introduce the nuclear-contaminated wastewater into the storage tank 1. An outlet pipe 3 is fixedly connected to the outside of the storage tank 1. The outlet pipe 3 is used to discharge the purified water after multiple filtrations from the storage tank 1. An activated carbon plate 13 is fixedly connected inside the storage tank 1. The activated carbon plate 13 uses its adsorption properties to adsorb and filter pollutants such as organic matter and heavy metals in the wastewater. A ceramic membrane 14 is fixedly connected inside the storage tank 1. The ceramic membrane 14 uses its micropores to physically intercept and filter suspended particles, bacteria and other pollutants in the wastewater. An ion exchange resin 15 is fixedly connected inside the storage tank 1. The ion exchange resin 15 removes harmful substances such as radioactive ions in the wastewater through ion exchange.

[0037] Working principle: Nuclear-contaminated wastewater enters the interior of storage tank 1 through inlet pipe 2, passes through metal filter screen 12 to remove large particulate impurities, then passes through activated carbon plate 13, which adsorbs organic pollutants and some radionuclides, then passes through ceramic membrane 14, which intercepts colloidal radioactive substances, and finally passes through ion exchange resin 15 to remove soluble radioactive ions such as strontium and cesium through ion exchange. At the same time, motor 4 is started, which drives stirring rod 16 to stir the water in storage tank 1.

[0038] When there are too many large particles of impurities, start motor 28. Motor 28 drives rotating plate 9 to rotate, rotating plate 9 drives follower plate 10 to rotate, and follower plate 10 drives scraper 11 to move, so that scraper 11 cleans the surface of metal filter screen 12 and cleans the dirt on the surface of metal filter screen 12 into the interior of waste bin 5. When there are too many impurities inside waste bin 5, pull out waste bin 5. Waste bin 5 drives moving plate 6 to move together, pulls pull plate 26, drives fixed frame 27 to rotate, so that fixed frame 27 disengages from locking plate 28, so that moving plate 6 seals the cleaning groove of storage box 1.

[0039] Different types of nuclear wastewater require different pore sizes for the metal filter screen 12. Activating hydraulic cylinder 17 pulls moving column 18, which in turn moves adjusting plate 22. Activating hydraulic cylinder 29 pushes moving column 20, which in turn moves adjusting plate 21. Adjusting plate 21 and adjusting plate 22 move towards each other, thereby changing the pore size of the metal filter screen 12.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A storage device for nuclear-contaminated wastewater with multiple filtration systems, comprising a storage tank (1), characterized in that: A metal filter screen (12) is fixedly connected inside the storage box (1). A hydraulic cylinder (17) is fixedly connected inside the storage box (1). A moving column (18) is fixedly connected to the drive end of the hydraulic cylinder (17). A hydraulic cylinder (19) is fixedly connected inside the storage box (1). A moving column (20) is fixedly connected to the drive end of the hydraulic cylinder (19). Multiple adjusting plates (22) are fixedly connected to the outside of the moving column (18). Multiple adjusting plates (21) are fixedly connected to the outside of the moving column (20). A cleaning component is provided inside the storage box (1).

2. The nuclear contaminated wastewater storage device with multiple filtration according to claim 1, characterized in that: The cleaning assembly includes a second motor (8), a rotating plate (9) is fixedly connected to the driving end of the second motor (8), a follower plate (10) is rotatably connected to the other end of the rotating plate (9), and a scraper (11) is rotatably connected to the other end of the follower plate (10).

3. The nuclear contaminated wastewater storage device with multiple filtration according to claim 1, characterized in that: The storage box (1) is fixedly connected to two limiting blocks (7) on the outside, and a waste bin (5) is slidably connected to the outside of the two limiting blocks (7). A moving plate (6) is slidably connected to the outside of the two limiting blocks (7).

4. A nuclear-contaminated wastewater storage device with multiple filtration according to claim 3, characterized in that: The waste bin (5) is fixedly connected to the outside of a locking plate (28), the movable plate (6) is fixedly connected to the outside of a base (23), the base (23) is fixedly connected to the inside of a fixing shaft (24), the fixing shaft (24) is fitted with a torsion spring (25), the fixing shaft (24) is rotatably connected to the outside of a pull plate (26), and the pull plate (26) is rotatably connected to a fixing frame (27).

5. A nuclear-contaminated wastewater storage device with multiple filtration according to claim 1, characterized in that: The storage box (1) is fixedly connected to a motor (4), and the drive end of the motor (4) is fixedly connected to a stirring rod (16).

6. A nuclear-contaminated wastewater storage device with multiple filtration according to claim 1, characterized in that: The storage box (1) is fixedly connected to the outside of a water inlet pipe (2) and a water outlet pipe (3).

7. A nuclear-contaminated wastewater storage device with multiple filtration according to claim 1, characterized in that: An activated carbon plate (13) is fixedly connected inside the storage box (1), a ceramic membrane (14) is fixedly connected inside the storage box (1), and an ion exchange resin (15) is fixedly connected inside the storage box (1).

8. A nuclear-contaminated wastewater storage device with multiple filtration according to claim 2, characterized in that: The external of the second motor (8) is fixedly connected to the outside of the storage box (1), the external of the first adjustment plate (21) is slidably connected to the inside of the metal filter screen (12), and the external of the second adjustment plate (22) is slidably connected to the inside of the metal filter screen (12).

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