A nanofiltration membrane module suitable for leachate treatment

Abstract

The utility model discloses a kind of nanofiltration membrane module suitable for leachate treatment, it is related to leachate treatment technical field, including support frame, the front of the support frame is fixedly installed with nanofiltration mechanism, connection mechanism is provided on the nanofiltration mechanism;The nanofiltration mechanism includes cylinder, the cylinder is fixedly installed in the front of support frame, the top of the cylinder is fixedly installed with support, the top of the support is fixedly installed with driving motor.The utility model is in the design of nanofiltration mechanism and connection mechanism whole, if nanofiltration piece needs to be cleaned, two insertion tubes are first quick release, then inject clean water from the connecting pipe mouth at top, simultaneously control driving motor work, by the transmission of rotating shaft and connecting frame drive rotating nanofiltration piece below inner ring to rotate, by the centrifugal force of reverse-flow clean water cooperation rotation, nanofiltration piece can be quickly and effectively automatically cleaned, without nanofiltration piece disassembly.

Description

Technical Field

[0001] This utility model relates to the field of leachate treatment technology, and specifically to a nanofiltration membrane module suitable for leachate treatment. Background Technology

[0002] Landfill leachate is a high-concentration organic wastewater formed during the landfilling or dumping of municipal solid waste due to rainwater infiltration, the release of moisture from the waste itself, biodegradation reactions, and groundwater reverse osmosis. Its composition is complex, containing high concentrations of organic matter, ammonia nitrogen, heavy metals, and pathogenic microorganisms, with a pollution intensity up to 100 times that of urban sewage. The water quality dynamically changes with the age of the landfill, initially characterized by high COD, followed by an increase in ammonia nitrogen and salinity. Direct discharge without treatment will severely pollute soil and groundwater, causing irreversible ecological damage. Nanofiltration membrane modules are used in landfill leachate treatment. These modules are pressure-driven membrane separation devices based on nanofiltration technology, with a core composed of a composite membrane with a pore size of 1-2 nanometers.

[0003] Traditional nanofiltration membrane modules do not have convenient cleaning functions. After a period of use, the nanofiltration membrane needs to be cleaned. During the cleaning process, the nanofiltration membrane needs to be disassembled inside the device, which is time-consuming, labor-intensive, and inefficient. Utility Model Content

[0004] The purpose of this invention is to provide a nanofiltration membrane module suitable for leachate treatment, so as to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A nanofiltration membrane assembly suitable for leachate treatment includes a support frame, on the front of which a nanofiltration mechanism is fixedly mounted, and a connecting mechanism is provided on the nanofiltration mechanism. The nanofiltration mechanism includes a cylinder, which is fixedly mounted on the front of a support frame. A support is fixedly mounted on the top of the cylinder, and a drive motor is fixedly mounted on the top of the support. A rotating shaft is rotatably connected to the bottom of the support. The output shaft of the drive motor is fixedly connected to the top of the rotating shaft. The bottom of the rotating shaft extends into the inner cavity of the cylinder and is fixedly connected to a connecting frame. An inner support ring is fixedly mounted on the inner wall of the cylinder, and a rotating inner ring is rotatably connected to the inner wall of the inner support ring. The connecting frame is fixedly mounted on the top of the rotating inner ring.

[0006] Preferably, the top of the rotating inner ring has a through hole, the bottom of the rotating inner ring has an internally threaded ring fixedly installed, the bottom of the internally threaded ring is threadedly connected to a connector, and the bottom of the connector is fixedly connected to a nanofiltration element.

[0007] Preferably, a frame is fixedly installed on the outer wall of the cylinder, an insert block is movably inserted into the inner cavity of the frame, a connecting arm is fixedly installed on the outer wall of the insert block, a cover plate is fixedly installed at the end of the connecting arm, and the cover plate is movably inserted into the front of the cylinder.

[0008] Preferably, the side of the frame is threaded with a connecting bolt, and the threaded end of the connecting bolt is in movable contact with the outer wall of the insert block.

[0009] Preferably, the connecting mechanism includes a connecting port, which is fixedly connected to the top and bottom of the cylinder, and an insert is movably inserted into the end of the connecting port.

[0010] Preferably, an assembly tube is fixedly connected to the end of the insertion tube, and a valve is fixedly connected to the middle of the assembly tube.

[0011] Preferably, a strip is fixedly installed on the outer wall of the insertion tube, and a kit is fixedly installed on the outer wall of the connecting tube opening, with the strip being movably inserted into the kit.

[0012] Preferably, a sliding limiting block is slidably connected to the inner wall of the insert, and an elastic element is fixedly installed on the inner wall of the insert, with one end of the elastic element away from the inner wall of the insert fixedly installed on the outer wall of the sliding limiting block.

[0013] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows: Through the overall design of the nanofiltration mechanism and connecting mechanism, if the nanofiltration element needs to be cleaned, firstly, the two insertion tubes are quickly disassembled, and then clean water is injected through the upper connecting tube port. At the same time, the drive motor is controlled to work, and the nanofiltration element under the rotating inner ring is rotated by the transmission of the rotating shaft and connecting frame. The reverse flow of clean water, combined with the centrifugal force generated by the rotation, can quickly and effectively clean the nanofiltration element automatically without disassembling the nanofiltration element. The cleaning and maintenance efficiency is high and the process is more convenient. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the separation structure of the cylinder and the cover plate of this utility model; Figure 3 This is a schematic diagram of the internal structure of the cylinder of this utility model; Figure 4 This is a schematic diagram of the connection structure of the nanofiltration device of this utility model; Figure 5 This is a schematic diagram of the disassembled structure of the connecting mechanism of this utility model; Figure 6 This is a schematic diagram of the structure of the sliding limit block of this utility model.

[0015] In the diagram: 1. Support frame; 2. Nanofiltration mechanism; 21. Cylinder; 22. Frame; 23. Connecting bolt; 24. Insert block; 25. Connecting arm; 26. Cover plate; 27. Inner support ring; 271. Rotating inner ring; 272. Through hole; 273. Internal threaded ring; 274. Connector; 275. Nanofiltration component; 28. Support; 281. Drive motor; 282. Rotating shaft; 283. Connecting frame; 3. Connecting mechanism; 31. Connecting port; 32. Kit; 33. Assembly pipe; 34. Valve; 35. Insert pipe; 36. Insert strip; 361. Sliding limit block; 362. Elastic element. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to embodiments: like Figures 1-6 As shown, this utility model provides a nanofiltration membrane assembly suitable for leachate treatment, including a support frame 1, a nanofiltration mechanism 2 fixedly installed on the front of the support frame 1, and a connecting mechanism 3 provided on the nanofiltration mechanism 2; The nanofiltration unit 2 includes a cylinder 21, which is fixedly installed on the front of the support frame 1. A support 28 is fixedly installed on the top of the cylinder 21, and a drive motor 281 is fixedly installed on the top of the support 28. A rotating shaft 282 is rotatably connected to the bottom of the support 28. The output shaft of the drive motor 281 is fixedly connected to the top of the rotating shaft 282. The bottom of the rotating shaft 282 extends into the inner cavity of the cylinder 21 and is fixedly connected to a connecting frame 283. An inner support ring 27 is fixedly installed on the inner wall of the cylinder 21, and a rotating inner ring 271 is rotatably connected to the inner wall of the inner support ring 27. The connecting frame 283 is fixedly installed on the top of the rotating inner ring 271. During the cleaning of the nanofiltration element 275, the drive motor 281 is controlled to work. Through the transmission of the rotating shaft 282 and the connecting frame 283, the nanofiltration element 275 below the rotating inner ring 271 can be rotated. The reverse flow of clean water, combined with the centrifugal force generated by the rotation, can quickly and effectively clean the nanofiltration element 275 automatically.

[0017] Furthermore, such as Figure 4 As shown, a through hole 272 is provided at the top of the rotating inner ring 271, and an internal threaded ring 273 is fixedly installed at the bottom of the rotating inner ring 271. A connector 274 is threadedly connected to the bottom of the internal threaded ring 273, and a nanofiltration element 275 is fixedly connected to the bottom of the connector 274. Through the connection relationship between the internal threaded ring 273 and the connector 274, the user can rotate and disassemble the nanofiltration element 275 at the bottom of the rotating inner ring 271.

[0018] Furthermore, such as Figure 2As shown, a frame 22 is fixedly installed on the outer wall of the cylinder 21. An insert 24 is movably inserted into the inner cavity of the frame 22. A connecting arm 25 is fixedly installed on the outer wall of the insert 24. A cover plate 26 is fixedly installed at the end of the connecting arm 25. The cover plate 26 is movably inserted into the front of the cylinder 21. A connecting bolt 23 is threadedly connected to the side of the frame 22. The threaded end of the connecting bolt 23 movably abuts against the outer wall of the insert 24. Before rotating and disassembling the nanofiltration element 275 by rotating the bottom of the inner ring 271, the connecting bolt 23 is loosened to release the fixed state of the insert 24 inside the frame 22. Then the insert 24 can be pulled out from the inside of the frame 22, and the cover plate 26 can be removed at the same time. Then the nanofiltration element 275 can be disassembled and assembled. Rubber strips are connected around the cover plate 26. In the initial state, the rubber strips are used to seal the connection between the cylinder 21 and the cover plate 26.

[0019] Furthermore, such as Figure 3 , Figure 5 As shown, the connecting mechanism 3 includes a connecting port 31, which is fixedly connected to the top and bottom of the cylinder 21. An insert tube 35 is movably inserted into the end of the connecting port 31, and an assembly tube 33 is fixedly connected to the end of the insert tube 35. A valve 34 is fixedly connected to the middle of the assembly tube 33. During normal use, the leachate to be treated is connected to the end of the lower assembly tube 33, and the treated leachate is output from the pipe connected to the end of the upper assembly tube 33. During this process, the leachate can enter the interior of the nanofiltration element 275 from the outside to achieve the filtration function.

[0020] Furthermore, such as Figure 3 , Figure 5 , Figure 6 As shown, a strip 36 is fixedly installed on the outer wall of the insertion tube 35, and a kit 32 is fixedly installed on the outer wall of the connecting port 31. The strip 36 is movably inserted into the kit 32. A sliding limit block 361 is slidably connected to the inner wall of the strip 36, and an elastic element 362 is fixedly installed on the inner wall of the strip 36. The end of the elastic element 362 away from the inner wall of the strip 36 is fixedly installed on the outer wall of the sliding limit block 361. If the nanofiltration element 275 needs to be cleaned, the two valves 34 should be closed first to stop the leachate treatment. In its working state, the sliding limit block 361 is pushed into the insert 36, and then the insert 36 is pulled out from the kit 32, thereby quickly disconnecting the two inserts 35. Then, clean water is injected from the upper connecting pipe port 31, and at the same time, the drive motor 281 is controlled to drive the nanofiltration element 275 to rotate. The reverse flow of clean water, combined with the centrifugal force generated by the rotation, can quickly and effectively clean the nanofiltration element 275 automatically. The wastewater generated during cleaning will be output from the lower connecting pipe port 31.

[0021] The working principle of this nanofiltration membrane module, which is suitable for leachate treatment, will be explained in detail below.

[0022] like Figures 1-6 As shown, during use, the leachate pipe to be treated is connected to the end of the lower assembly pipe 33. The treated leachate is output from the pipe connected to the end of the upper assembly pipe 33. During this process, the leachate can enter the interior of the nanofiltration element 275 from the outside to achieve the filtration function. If the nanofiltration element 275 needs to be cleaned, first close the two valves 34 to stop the leachate treatment operation, push the sliding limit block 361 into the interior of the insert 36, and then pull the insert 36 out of the kit 32 to quickly disconnect the two inserts 35. Then, inject the leachate into the upper connecting pipe port 31. Clean water is used to drive the drive motor 281 to rotate the nanofiltration element 275. The reverse flow of clean water, combined with the centrifugal force generated by the rotation, can quickly and effectively clean the nanofiltration element 275 automatically. The wastewater generated during cleaning will be output from the connecting pipe 31 below. If the nanofiltration element 275 needs to be replaced, loosen the connecting bolt 23 to release the fixed state of the insert 24 inside the frame 22. Then the insert 24 can be pulled out from the inside of the frame 22. At the same time, remove the cover plate 26. The user can rotate and disassemble the nanofiltration element 275 from the bottom of the rotating inner ring 271.

[0023] It should be noted that, in the description of this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joint" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0024] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A nanofiltration membrane module suitable for leachate treatment, characterized in that: Includes a support frame, on the front of which a nanofiltration mechanism is fixedly mounted, and on which a connecting mechanism is provided; The nanofiltration mechanism includes a cylinder, which is fixedly mounted on the front of a support frame. A support is fixedly mounted on the top of the cylinder, and a drive motor is fixedly mounted on the top of the support. A rotating shaft is rotatably connected to the bottom of the support. The output shaft of the drive motor is fixedly connected to the top of the rotating shaft. The bottom of the rotating shaft extends into the inner cavity of the cylinder and is fixedly connected to a connecting frame. An inner support ring is fixedly mounted on the inner wall of the cylinder, and a rotating inner ring is rotatably connected to the inner wall of the inner support ring. The connecting frame is fixedly mounted on the top of the rotating inner ring.

2. A nanofiltration membrane module suitable for leachate treatment according to claim 1, characterized in that: The top of the rotating inner ring has a through hole, and the bottom of the rotating inner ring has an internally threaded ring fixedly installed. The bottom of the internally threaded ring is threadedly connected to a connector, and the bottom of the connector is fixedly connected to a nanofiltration element.

3. A nanofiltration membrane module suitable for leachate treatment according to claim 1, characterized in that: A frame is fixedly installed on the outer wall of the cylinder, and a plug is movably inserted into the inner cavity of the frame. A connecting arm is fixedly installed on the outer wall of the plug, and a cover plate is fixedly installed at the end of the connecting arm. The cover plate is movably inserted into the front of the cylinder.

4. A nanofiltration membrane module suitable for leachate treatment according to claim 3, characterized in that: The side of the frame is threaded with a connecting bolt, and the threaded end of the connecting bolt is in movable contact with the outer wall of the insert block.

5. A nanofiltration membrane module suitable for leachate treatment according to claim 1, characterized in that: The connecting mechanism includes a connecting port, which is fixedly connected to the top and bottom of the cylinder, and an insert is movably inserted into the end of the connecting port.

6. A nanofiltration membrane module suitable for leachate treatment according to claim 5, characterized in that: An assembly tube is fixedly connected to the end of the insertion tube, and a valve is fixedly connected to the middle of the assembly tube.

7. A nanofiltration membrane module suitable for leachate treatment according to claim 6, characterized in that: A strip is fixedly installed on the outer wall of the cannula, and a kit is fixedly installed on the outer wall of the connecting tube opening. The strip is movably inserted into the kit.

8. A nanofiltration membrane module suitable for leachate treatment according to claim 7, characterized in that: A sliding limiting block is slidably connected to the inner wall of the insert, and an elastic element is fixedly installed on the inner wall of the insert. The end of the elastic element away from the inner wall of the insert is fixedly installed on the outer wall of the sliding limiting block.

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