Tap water nanofiltration membrane deep purification device

Abstract

The utility model relates to the technical field of tap water, and discloses a tap water nanofiltration membrane deep purification device which comprises a central pipe, a first filtering hole is formed in the central pipe, a filtering opening is formed in a connecting ring, a limiting plate is fixedly installed on the outer side of a rotating shaft, and the limiting plate is located on the right side of the connecting ring. The rotating shaft is rotationally connected to the interior of the connecting ring, the spiral blade is fixedly installed on the outer side of the rotating shaft, meanwhile, the spiral blade is located in the center pipe, and the outer side of the spiral blade makes contact with the inner wall of the center pipe, so that when water flow passes through, the spiral blade is driven to rotate through the rotating effect of the rotating shaft and the connecting ring; after the first filtering holes are blocked by impurities, the impurities can be scraped off by the spiral blades and are continuously pushed to the right side, so that the situation that the first filtering holes are blocked by the impurities in the water in the central pipe is prevented.

Description

Technical Field

[0001] This utility model relates to the field of tap water technology, and more specifically, to a nanofiltration membrane deep purification device for tap water. Background Technology

[0002] Nanofiltration membranes are functional semi-permeable membranes that allow solvent molecules or certain low molecular weight solutes or low-valence ions to pass through. They are commonly used for filtering drinking water. However, after prolonged use, existing nanofiltration membranes are prone to clogging of the internal pores during water permeation due to the presence of many impurities in the water, thus affecting the filtration efficiency of the device. Utility Model Content

[0003] In order to overcome the shortcomings of the existing technology, this utility model provides a deep purification device for tap water using nanofiltration membrane, which has the advantages of preventing the permeation pores from being blocked and improving the permeation efficiency.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a nanofiltration membrane deep purification device for tap water, comprising a central tube, a first filter hole being provided inside the central tube, a connecting ring being fixedly installed on the left side of the central tube, a rotating shaft being rotatably connected inside the connecting ring, a spiral blade being fixedly installed on the outer side of the rotating shaft, the spiral blade being located inside the central tube, a filter port being provided inside the connecting ring, and a limiting plate being fixedly installed on the outer side of the rotating shaft, the limiting plate being located on the right side of the connecting ring.

[0005] As a preferred embodiment of this utility model, a first connecting component is fixedly installed on the outer side of the connecting ring. An installation groove is provided on the side of the first connecting component near the central tube. A first sealing ring is fixedly installed inside the installation groove. The diameter of the first sealing ring is equal to the diameter of the first connecting component. A tap water inlet pipe is fixedly installed at the end of the first connecting component away from the central tube.

[0006] As a preferred embodiment of this utility model, a first nanofiltration membrane is fixedly installed on the outside of the central tube, a second filter hole is opened inside the first nanofiltration membrane, a filter screen is fixedly installed on the outside of the second filter hole, a second nanofiltration membrane is fixedly installed on the outside of the filter screen, a shell is sleeved on the outside of the second nanofiltration membrane, and a water outlet pipe is fixedly installed on the outside of the shell.

[0007] As a preferred embodiment of this utility model, a second connecting component is fixedly installed on the left side of the central tube. A drain outlet is fixedly installed at the end of the second connecting component away from the central tube, and a second sealing ring is fixedly installed at the end of the second connecting component close to the central tube. The second sealing ring is located at the junction of the second connecting component and the outer shell, and the second sealing ring is in contact with both the second connecting component and the outer shell.

[0008] As a preferred embodiment of this utility model, a bracket is fixedly installed inside the sewage outlet, a telescopic rod is fixedly installed on the side of the bracket near the second connecting component, a spring is sleeved on the outside of the telescopic rod, a sealing plug is fixedly installed on the end of the spring away from the bracket, and a limit ring is fixedly installed inside the sewage outlet, with the limit ring located to the right of the sealing plug.

[0009] As a preferred embodiment of this utility model, there are multiple filter ports, all of which are located on the right side of the spiral blade and on the left side of the limiting plate.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] 1. This utility model has a rotating shaft rotatably connected inside the connecting ring, and a spiral blade is fixedly installed on the outside of the rotating shaft. At the same time, the spiral blade is located inside the central tube and the outside of the spiral blade is in contact with the inner wall of the central tube. When water flows through, it will drive the spiral blade to rotate through the rotation of the rotating shaft and the connecting ring. When impurities block the first filter hole, they will be scraped open by the spiral blade and pushed to the right, thereby preventing the impurities in the water inside the central tube from blocking the first filter hole.

[0012] 2. This utility model features a bracket fixedly installed inside the drain outlet. A telescopic rod is fixedly installed on the side of the bracket near the second connecting component. A spring is sleeved on the outside of the telescopic rod. A sealing plug is fixedly installed on the end of the spring away from the bracket. A limiting ring is fixedly installed inside the drain outlet, located to the right of the sealing plug. The limiting ring is circular. When the pressure inside the central tube is high enough, it will squeeze the sealing plug towards the telescopic rod, causing the telescopic rod to contract. At the same time, tap water containing impurities will be discharged out through the drain outlet, achieving the effect of timely removal of impurities. Meanwhile, the spring constantly squeezes the sealing plug towards the limiting ring, ensuring that the internal pressure of the central tube remains sufficient. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0015] Figure 3 This is a partial structural cross-sectional view of the present invention;

[0016] Figure 4 This utility model Figure 3 Enlarged schematic diagram of the structure at point A;

[0017] Figure 5 This utility model Figure 3 Enlarged schematic diagram of the structure at point B.

[0018] In the diagram: 1. Central tube; 2. First filter hole; 3. Connecting ring; 4. Rotating shaft; 5. Spiral blade; 6. Filter port; 7. Limiting plate; 8. Mounting groove; 9. First sealing ring; 10. First connecting assembly; 11. Tap water inlet pipe; 12. First nanofiltration membrane; 13. Second filter hole; 14. Filter screen; 15. Second nanofiltration membrane; 16. Outer shell; 17. Outlet pipe; 18. Second sealing ring; 19. Second connecting assembly; 20. Drain outlet; 21. Bracket; 22. Telescopic rod; 23. Spring; 24. Sealing plug; 25. Limiting ring. Detailed Implementation

[0019] 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.

[0020] like Figures 1 to 5 As shown, this utility model provides a deep purification device for tap water using nanofiltration membrane, including a central tube 1, a first filter hole 2 opened inside the central tube 1, a connecting ring 3 fixedly installed on the left side of the central tube 1, a rotating shaft 4 rotatably connected inside the connecting ring 3, a spiral blade 5 fixedly installed on the outside of the rotating shaft 4, the spiral blade 5 being located inside the central tube 1, a filter port 6 opened inside the connecting ring 3, and a limiting plate 7 fixedly installed on the outside of the rotating shaft 4, the limiting plate 7 being located on the right side of the connecting ring 3.

[0021] The spiral blade 5 rotates with the action of the water flow through the rotation of the shaft 4 and the connecting ring 3. At this time, the impurities in the water are continuously pushed to the left. Meanwhile, the outer side of the spiral blade 5 contacts the inner wall of the central tube 1. Thus, when impurities block the first filter hole 2, they are scraped open by the spiral blade 5 and pushed to the right, thereby preventing the impurities in the water inside the central tube 1 from blocking the first filter hole 2.

[0022] The first connecting component 10 is fixedly installed on the outer side of the connecting ring 3. The first connecting component 10 has an installation groove 8 on the side near the central pipe 1. The first sealing ring 9 is fixedly installed inside the installation groove 8. The diameter of the first sealing ring 9 is equal to the diameter of the first connecting component 10. A tap water inlet pipe 11 is fixedly installed at the end of the first connecting component 10 away from the central pipe 1.

[0023] The end of the tap water inlet pipe 11 furthest from the first connecting component 10 is connected to the circulation pump. Its main function is to start the circulation pump to inject tap water into the interior of the central pipe 1 through the tap water inlet pipe 11. Generally, because the circulation pump is a one-way circulation, it increases the pressure inside the central pipe 1, so that the water inside the central pipe 1 can quickly permeate outward, thereby improving the permeation efficiency.

[0024] Among them, a first nanofiltration membrane 12 is fixedly installed on the outside of the central tube 1, a second filter hole 13 is opened inside the first nanofiltration membrane 12, a filter screen 14 is fixedly installed on the outside of the second filter hole 13, a second nanofiltration membrane 15 is fixedly installed on the outside of the filter screen 14, a shell 16 is sleeved on the outside of the second nanofiltration membrane 15, and a water outlet pipe 17 is fixedly installed on the outside of the shell 16.

[0025] By combining the first nanofiltration membrane 12, the filter screen 14, and the multi-layer combination of the filter screen 14, the fine impurities in the tap water are fully filtered, thereby achieving a deep purification effect. Finally, the deeply purified tap water is discharged out through the outlet pipe 17 to achieve the collection effect.

[0026] The second connecting component 19 is fixedly installed on the left side of the central tube 1. A drain outlet 20 is fixedly installed at the end of the second connecting component 19 away from the central tube 1. A second sealing ring 18 is fixedly installed at the end of the second connecting component 19 close to the central tube 1. The second sealing ring 18 is located at the junction of the second connecting component 19 and the outer shell 16. The second sealing ring 18 is in contact with the second connecting component 19 and the outer shell 16 respectively.

[0027] The main function of the second sealing ring 18 is to seal the junction between the second connecting component 19 and the outer casing 16, preventing the filtered tap water from leaking out through the junction between the second connecting component 19 and the outer casing 16.

[0028] The drain outlet 20 is equipped with a bracket 21, and a telescopic rod 22 is fixedly installed on the side of the bracket 21 near the second connecting component 19. A spring 23 is sleeved on the outside of the telescopic rod 22, and a sealing plug 24 is fixedly installed on the end of the spring 23 away from the bracket 21. A limit ring 25 is fixedly installed inside the drain outlet 20, and the limit ring 25 is located to the right of the sealing plug 24.

[0029] The limiting ring 25 is circular and its main function is to limit the sealing plug 24. When the pressure inside the central tube 1 is large enough, it will squeeze the sealing plug 24 towards the telescopic rod 22, causing the telescopic rod 22 to retract. At the same time, the tap water containing impurities will be discharged out through the drain port 20, achieving the effect of timely removal of impurities. Meanwhile, the spring 23 always squeezes the sealing plug 24 towards the limiting ring 25, so that the internal pressure of the central tube 1 can always be maintained.

[0030] There are multiple filter ports 6, all of which are located on the right side of the spiral blade 5 and on the left side of the limiting plate 7.

[0031] The main function of the limiting plate 7 is to limit the rotation of the shaft 4 and prevent the shaft 4 from shifting to the left during rotation. At the same time, the rotation of the shaft 4 will also drive the filter port 6 to rotate. When some larger impurities in the tap water are filtered, the impurities will accumulate on the right side of the filter port 6, causing the filter port 6 to become blocked. At this time, the limiting plate 7 rotates with the shaft 4, which can stir the impurities, thereby achieving the effect of keeping the filter port 6 unobstructed.

[0032] Working principle and usage process of this utility model:

[0033] First, connect the end of the tap water inlet pipe 11 away from the first connecting component 10 to the circulation pump, so that tap water is injected into the interior of the central pipe 1 through the circulation pump;

[0034] Secondly, since there is a filter port 6 inside the connecting ring 3, and the filter port 6 is located on the left side of the limiting plate 7, when the filter port 6 filters some larger impurities in the tap water, the impurities will accumulate on the right side of the filter port 6, causing the filter port 6 to become blocked. At this time, the limiting plate 7 rotates with the rotating shaft 4, which can stir the impurities, thereby achieving the effect of keeping the filter port 6 unobstructed.

[0035] Meanwhile, a rotating shaft 4 is rotatably connected inside the connecting ring 3, and a spiral blade 5 is fixedly installed on the outside of the rotating shaft 4. The spiral blade 5 is located inside the central tube 1 and the outside of the spiral blade 5 is in contact with the inner wall of the central tube 1. When water flows through, it will drive the spiral blade 5 to rotate through the rotation of the rotating shaft 4 and the connecting ring 3. When impurities block the first filter hole 2, they will be scraped open by the spiral blade 5 and pushed to the right, thereby preventing impurities in the water inside the central tube 1 from blocking the first filter hole 2. At the same time, the tap water will be squeezed through the first filter hole 2 towards the first nanofiltration membrane 12, the filter screen 14 and the second nanofiltration membrane 15 to achieve deep purification, and then discharged through the outlet pipe 17.

[0036] Finally, a bracket 21 is fixedly installed inside the drain outlet 20. A telescopic rod 22 is fixedly installed on the side of the bracket 21 near the second connecting component 19. A spring 23 is sleeved on the outside of the telescopic rod 22. A sealing plug 24 is fixedly installed at the end of the spring 23 away from the bracket 21. A limiting ring 25 is fixedly installed inside the drain outlet 20, and the limiting ring 25 is located to the right of the sealing plug 24. The limiting ring 25 is circular. When the pressure inside the central tube 1 is large enough, it will squeeze the sealing plug 24 towards the telescopic rod 22, causing the telescopic rod 22 to contract. At the same time, tap water containing impurities will be discharged out through the drain outlet 20, achieving the effect of timely removal of impurities. Meanwhile, the spring 23 always squeezes the sealing plug 24 towards the limiting ring 25, so that the inside of the central tube 1 can always maintain sufficient pressure.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A nanofiltration membrane deep purification device for tap water, comprising a central tube (1), characterized in that: The center tube (1) has a first filter hole (2) inside. A connecting ring (3) is fixedly installed on the left side of the center tube (1). A rotating shaft (4) is rotatably connected inside the connecting ring (3). A spiral blade (5) is fixedly installed on the outside of the rotating shaft (4). The spiral blade (5) is located inside the center tube (1). A filter port (6) is opened inside the connecting ring (3). A limiting plate (7) is fixedly installed on the outside of the rotating shaft (4). The limiting plate (7) is located on the right side of the connecting ring (3).

2. The nanofiltration membrane deep purification device for tap water according to claim 1, characterized in that: A first connecting component (10) is fixedly installed on the outside of the connecting ring (3). An installation groove (8) is provided on the side of the first connecting component (1) near the central tube (1). A first sealing ring (9) is fixedly installed inside the installation groove (8). The diameter of the first sealing ring (9) is equal to the diameter of the first connecting component (10). A tap water inlet pipe (11) is fixedly installed at the end of the first connecting component (10) away from the central tube (1).

3. The nanofiltration membrane deep purification device for tap water according to claim 1, characterized in that: A first nanofiltration membrane (12) is fixedly installed on the outside of the central tube (1). A second filter hole (13) is opened inside the first nanofiltration membrane (12). A filter screen (14) is fixedly installed on the outside of the second filter hole (13). A second nanofiltration membrane (15) is fixedly installed on the outside of the filter screen (14). A shell (16) is sleeved on the outside of the second nanofiltration membrane (15). A water outlet pipe (17) is fixedly installed on the outside of the shell (16).

4. The nanofiltration membrane deep purification device for tap water according to claim 1, characterized in that: A second connecting component (19) is fixedly installed on the left side of the central tube (1). A drain outlet (20) is fixedly installed at the end of the second connecting component (19) away from the central tube (1). A second sealing ring (18) is fixedly installed at the end of the second connecting component (19) close to the central tube (1). The second sealing ring (18) is located at the junction of the second connecting component (19) and the outer shell (16). The second sealing ring (18) is in contact with the second connecting component (19) and the outer shell (16) respectively.

5. The nanofiltration membrane deep purification device for tap water according to claim 4, characterized in that: A bracket (21) is fixedly installed inside the drain outlet (20). A telescopic rod (22) is fixedly installed on the side of the bracket (21) near the second connecting component (19). A spring (23) is sleeved on the outside of the telescopic rod (22). A sealing plug (24) is fixedly installed on the end of the spring (23) away from the bracket (21). A limiting ring (25) is fixedly installed inside the drain outlet (20). The limiting ring (25) is located to the right of the sealing plug (24).

6. The nanofiltration membrane deep purification device for tap water according to claim 1, characterized in that: There are multiple filter ports (6), all of which are located on the right side of the spiral blade (5) and on the left side of the limiting plate (7).

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