A water purifier with ultrafiltration membrane self-cleaning function

Abstract

This utility model discloses a water purifier with a self-cleaning function for ultrafiltration membranes, including a shell, an ultrafiltration membrane for filtration housed within the shell, and a water pump motor. It includes a rotating drum structure housed within the shell, with an internal cleaning mechanism and an external cleaning structure for cleaning the ultrafiltration membrane. The internal cleaning mechanism, located at the center of the rotating drum structure, includes a central rod with bristles. The external cleaning structure, located inside the rotating drum structure, cleans the outer side of the ultrafiltration membrane. This water purifier with a self-cleaning function, through the rotation of the rotating drum structure, drives the bristles of the internal cleaning mechanism and the external cleaning structure to work synchronously, enabling comprehensive and continuous cleaning of both the inner and outer sides of the ultrafiltration membrane. This avoids the problem of incomplete cleaning of the middle and end ultrafiltration membranes caused by uneven force during pulsed water flow cleaning.

Description

Technical Field

[0001] This utility model relates to the field of self-cleaning water purifier technology, specifically a water purifier with an ultrafiltration membrane self-cleaning function. Background Technology

[0002] Water purifiers arose from people's need for clean drinking water. Initially, they were mostly basic filtration devices that could remove sediment, residual chlorine, and other contaminants from the water. With technological advancements, processes such as ultrafiltration and reverse osmosis have been gradually applied, effectively removing bacteria, heavy metals, and other pollutants. Today, they are becoming more intelligent, providing smart reminders for filter replacement while continuously improving water purification rates to better adapt to various water usage scenarios.

[0003] A water purifier disclosed in patent application number 202110083314.2 relates to the field of water purification technology. The water purifier includes a housing, a filter element, and a rotating impeller. The filter element is installed inside the housing and is used to produce purified water. The upper cover of the housing has a water inlet and a fixing post, the fixing post being located inside the upper cover and fixedly connected to it. The rotating impeller is rotatably mounted on the fixing post and located between the water inlet and the water inlet end of the filter element. Furthermore, all blades in the rotating impeller are inclined blades. During the filter element cleaning process, the water purifier can generate a pulsed flushing water flow through the rotating impeller, which can better clean the filter element, improve cleaning efficiency, thereby preventing filter element clogging and extending the filter element's service life.

[0004] Although the water purifier can clean the ultrafiltration membrane by rinsing with pulsed water flow, the pulsed water flow has a high initial strength and a low later strength, resulting in only the initial part of the ultrafiltration membrane being cleaned, while the middle and other parts of the ultrafiltration membrane are not thoroughly cleaned. Utility Model Content

[0005] The purpose of this invention is to provide a water purifier with an ultrafiltration membrane self-cleaning function to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a water purifier with an ultrafiltration membrane self-cleaning function, comprising a housing, wherein an ultrafiltration membrane for filtration is disposed within the housing, and a water pump motor, comprising:

[0007] A rotating drum structure is disposed in the outer shell, and the rotating drum structure is provided with an internal cleaning mechanism and an external cleaning structure for cleaning the ultrafiltration membrane;

[0008] The internal cleaning mechanism is located at the center of the rotating drum structure and includes a central rod with bristles on the central rod.

[0009] An external cleaning structure, located inside the rotating drum structure, is used to clean the outer side of the ultrafiltration membrane.

[0010] Preferably, the inner side of the rotating drum structure is provided with a guide groove for backflow after cleaning the ultrafiltration membrane, and the guide groove is provided with a discharge port.

[0011] Preferably, the internal cleaning mechanism further includes a first connecting plate disposed at the water outlet end of the rotating drum structure and a second connecting plate disposed at the water inlet end of the rotating drum structure, wherein the centers of the first connecting plate and the second connecting plate are connected to the central rod.

[0012] Preferably, the outer cleaning structure includes a mounting base disposed on the inner wall of the rotating drum structure, and the mounting base is provided with a cleaning block for cleaning the outer side of the ultrafiltration membrane.

[0013] Preferably, the outer side of the rotating cylinder structure is provided with a collar groove, a connecting collar is provided on the collar groove, a connecting rod is provided on the connecting collar, and the connecting rod is connected to the inner wall of the outer shell.

[0014] Preferably, the rotating drum structure is rotatable within the connecting collar, and the rotating drum structure can drive the internal cleaning mechanism and the external cleaning structure to rotate synchronously.

[0015] Preferably, the water inlet end of the rotating drum structure is provided with a rotating ring, and the inner side of the rotating ring is provided with fan blades.

[0016] Preferably, the fan blades and the pump motor are positioned correspondingly.

[0017] Preferably, the water pump motor is equipped with a water pump fan blade, and when the water pump motor drives the water pump fan blade, the vortex water flow can drive the rotating ring to rotate.

[0018] Preferably, at least one guide groove and one discharge port are arranged in a ring array within the rotating cylinder structure.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows: This water purifier with ultrafiltration membrane self-cleaning function, through the rotation of the rotating drum structure, drives the bristles of the internal cleaning mechanism to work synchronously with the external cleaning structure, which can perform all-round and continuous cleaning of the inner and outer sides of the ultrafiltration membrane, avoiding the problem of incomplete cleaning of the middle and end ultrafiltration membranes due to uneven force during pulse water flow cleaning, and eliminating cleaning dead corners; the guide groove and the drain port can discharge the pollutants after cleaning in a timely manner to prevent secondary pollution; the rotating drum structure is driven by a pump motor to rotate continuously, so that the cleaning force is uniform and stable, effectively improving the cleaning effect of the ultrafiltration membrane, extending its service life, and reducing the maintenance frequency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the outer structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the pump motor of this utility model;

[0022] Figure 3 This is a schematic diagram of the rotating drum structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the rotating ring of this utility model;

[0024] Figure 5 This is a schematic diagram of the ultrafiltration membrane port structure of this utility model;

[0025] Figure 6 This utility model Figure 5 A magnified structural diagram of point A in the middle.

[0026] In the diagram: 1. Outer casing; 2. Pump motor; 3. Rotary drum structure; 31. Drain port; 32. Guide groove; 4. Connecting collar; 41. Connecting rod; 42. Collar groove; 5. Internal cleaning mechanism; 51. First connecting plate; 52. Second connecting plate; 53. Central rod; 54. Brush bristles; 6. External cleaning structure; 61. Mounting base; 62. Cleaning block; 7. Ultrafiltration membrane; 8. Rotating ring; 81. Fan blade. Detailed Implementation

[0027] 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.

[0028] Please see Figures 1-6This utility model provides a technical solution: a water purifier with an ultrafiltration membrane self-cleaning function, including a shell 1. The shell 1 is mainly used to connect the connecting collar 4, so that the rotating drum structure 3 can roll in the shell 1. The shell 1 is provided with an ultrafiltration membrane 7 for filtration. The ultrafiltration membrane 7 is used to filter the water source. After a long filtration time, certain impurities will be attached to the inner and outer surfaces of the shell 1, resulting in secondary pollution. The model also includes a water pump motor 2, which has two uses: one is to pump water to the ultrafiltration membrane 7 to accelerate the filtration efficiency, and the other is to pump water to flush the ultrafiltration membrane 7, thereby removing impurities from the surface of the ultrafiltration membrane 7. While the water is flushed down, this flushing method is not entirely effective in cleaning the membrane. The water pump motor 2 is equipped with pump blades, which drive the pump blades to rotate, guiding the water flow towards the ultrafiltration membrane 7. When the pump motor 2 drives the pump blades, the vortex of water flow drives the rotating ring 8 to rotate. This not only pumps water onto the ultrafiltration membrane 7 but also rotates the rotating drum structure 3. After the pump motor 2 starts, it drives the pump blades to rotate, delivering the water to be filtered to the ultrafiltration membrane 7, accelerating the filtration efficiency. Simultaneously, the vortex formed by the water flow drives the rotating ring 8 to rotate, causing the rotating drum structure 3 to roll within the outer shell 1 via the connecting collar 4. The ultrafiltration membrane 7 filters the water flow, and after prolonged use, impurities accumulate on its inner and outer surfaces. The water pump motor 2 can simultaneously pump water to flush the surface of the ultrafiltration membrane 7 to remove impurities, but the flushing effect is not thorough, including:

[0029] The rotating drum structure 3 is housed within the outer casing 1. The rotating drum structure 3 has an internal cleaning mechanism 5 and an external cleaning structure 6 for cleaning the ultrafiltration membrane 7. An inner guide groove 32 is provided on the inner side of the rotating drum structure 3 for backflow after cleaning the ultrafiltration membrane 7. After cleaning, the wastewater in the guide groove 32 is discharged outwards by the rotating force of the rotating drum structure 3. A drain port 31 is provided on the guide groove 32. When the guide groove 32 guides the wastewater outwards, the wastewater will be discharged into the interior of the rotating drum structure 3 through the drain port 31. A rotating ring 8 is provided at the water inlet end of the rotating drum structure 3. 8 is set at one end of the rotating drum structure 3 near the pump motor 2 to ensure that the water flow driven by the pump motor 2 can drive the rotating ring 8 to rotate. When the rotating ring 8 rotates, it will drive the rotating drum structure 3 to rotate together in the connecting collar 4. The inner side of the rotating ring 8 is provided with a fan blade 81. The fan blade 81 is the main component that drives the rotating drum structure 3 to rotate, ensuring that the water flow generates sufficient rotational force when passing through the fan blade 81. The fan blade 81 and the pump motor 2 are positioned correspondingly. The guide groove 32 and the discharge port 31 are at least one and are arranged in a ring array in the rotating drum structure 3.

[0030] The pump motor 2 drives water flow to impact the fan blades 81, causing the rotating ring 8 to rotate accordingly. The rotating drum structure 3 rotates synchronously within the outer casing 1, driving the internal cleaning mechanism 5 and the external cleaning structure 6 to act on the ultrafiltration membrane 7. During the rotation of the rotating drum structure 3, impurities generated during cleaning enter the guide groove 32 and are discharged through the annular array of discharge ports 31. The fan blades 81 correspond to the position of the pump motor 2, and the kinetic energy of the water is directly converted into the rotational force of the rotating drum structure 3; the guide groove 32 rotates with the rotating drum structure 3, forming a directional flow, and impurities are discharged through the discharge ports 31.

[0031] The internal cleaning mechanism 5 is located at the center of the rotating drum structure 3 and includes a central rod 53. The central rod 53 rotates synchronously with the rotating drum structure 3 due to the rotation of the rotating drum structure 3. The central rod 53 is equipped with bristles 54, which drive the bristles 54 connected to it to rotate, thus cleaning the inner side of the ultrafiltration membrane 7. Since there are gaps between the bristles 54, the normal filtration function of the ultrafiltration membrane 7 will not be affected. The internal cleaning mechanism 5 also includes a first connecting plate 51 located at the water outlet end of the rotating drum structure 3 and a second connecting plate 52 located at the water inlet end of the rotating drum structure 3. The first connecting plate 51 and the second connecting plate 52 are used to connect the two ends of the rotating drum structure 3, respectively. The center of the first connecting plate 51 and the second connecting plate 52 are connected to the central rod 53.

[0032] When the rotating drum structure 3 rotates, it drives the internal cleaning mechanism 5 to operate synchronously: the first connecting plate 51 and the second connecting plate 52 move in conjunction with the rotating drum structure 3, causing the central rod 53 to rotate accordingly, which in turn drives the bristles 54 to wash the inside of the ultrafiltration membrane 7. During the rotation of the bristles 54, their gaps do not interfere with the normal filtration of the ultrafiltration membrane 7, achieving coordinated operation of cleaning and filtration.

[0033] The outer cleaning structure 6, located inside the rotating drum structure 3, is used to clean the outer side of the ultrafiltration membrane 7. The outer cleaning structure 6 includes a mounting base 61 on the inner wall of the rotating drum structure 3. The mounting base 61 contains several cleaning blocks 62 for cleaning the outer side of the ultrafiltration membrane 7. These blocks are arranged in an arc shape and wrapped around the inner side of the rotating drum structure 3. This design not only allows for thorough cleaning of the outer side of the ultrafiltration membrane 7, but also enables the rotating drum structure 3 to perform a continuous scrubbing motion at a certain speed. Residual debris after scrubbing is guided into the guide groove 32 and discharged outwards through the drain port 31. The outer cleaning structure 6 operates synchronously as the rotating drum structure 3 rotates. The arc-shaped mounting base 61 drives the cleaning blocks 62, achieving thorough cleaning of the outer side of the ultrafiltration membrane 7. The kinetic energy generated by the rotation of the rotating drum structure 3 causes the cleaning blocks 62 to act on the ultrafiltration membrane 7 at a certain speed. Residual debris generated during scrubbing is guided into the guide groove 32 and finally discharged through the drain port 31.

[0034] The outer side of the rotating drum structure 3 has a collar groove 42, on which a connecting collar 4 is provided. The connecting collar 4 is positioned within the collar groove 42 and connected by a connecting rod 41, ensuring that the rotating drum structure 3 is always outside the ultrafiltration membrane 7, while inside the outer shell 1, the outer shell 1, the rotating drum structure 3, and the ultrafiltration membrane 7 are concentric. The connecting collar 4 has a connecting rod 41, which is connected to the inner wall of the outer shell 1. The rotating drum structure 3 can rotate within the connecting collar 4, thus ensuring that the ultrafiltration membrane 7 can be cleaned both inside and out. The rotating drum structure 3 can drive the internal cleaning mechanism 5 and the external cleaning structure 6 to rotate synchronously. The collar groove 42 on the outer side of the rotating drum structure 3 cooperates with the connecting collar 4, and is linked to the inner wall of the outer shell 1 through the connecting rod 41, keeping the rotating drum structure 3, the outer shell 1, and the ultrafiltration membrane 7 concentric. When the rotating drum structure 3 rotates within the connecting collar 4, it simultaneously drives the internal cleaning mechanism 5 and the external cleaning structure 6 to achieve stable brushing of the ultrafiltration membrane 7.

[0035] When the water purifier with ultrafiltration membrane self-cleaning function is in use, the pump motor 2 drives the water flow to impact the fan blade 81, which drives the rotating ring 8 to rotate. This causes the rotating drum structure 3 to rotate inside the outer shell 1 through the engagement of the collar groove 42 and the connecting collar 4. The outer shell 1, the rotating drum structure 3, and the ultrafiltration membrane 7 remain concentric. When the rotating drum structure 3 rotates, it simultaneously drives the first connecting plate 51, the second connecting plate 52, and the central rod 53 of the internal cleaning mechanism 5 to rotate, so that the bristles 54 wash the inner side of the ultrafiltration membrane 7. The gaps in the bristles 54 do not affect filtration. At the same time, it drives the mounting base 61 and the cleaning block 62 of the outer cleaning structure 6 to clean the outer side of the ultrafiltration membrane 7 without dead angles. The impurities generated during cleaning enter the guide groove 32 as the rotating drum structure 3 rotates, and are finally discharged through the drain port 31 of the annular array.

[0036] 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 water purifier having a self-cleaning function of ultrafiltration membrane, comprising a housing (1), an ultrafiltration membrane (7) for filtration being arranged in the housing (1), and a pump water motor (2), characterized in that, include: A rotating drum structure (3) is provided in the outer shell (1), and the rotating drum structure (3) is provided with an internal cleaning mechanism (5) and an external cleaning structure (6) for cleaning the ultrafiltration membrane (7). The internal cleaning mechanism (5) is located at the center of the rotating drum structure (3) and includes a central rod (53) with bristles (54) on the central rod (53). The outer cleaning structure (6) is located inside the rotating drum structure (3) and is used to clean the outer side of the ultrafiltration membrane (7).

2. The water purifier with self-cleaning function of ultrafiltration membrane according to claim 1, characterized in that: The inner side of the rotating drum structure (3) is provided with a guide groove (32) for backflow after cleaning the ultrafiltration membrane (7), and a drain port (31) is provided on the guide groove (32).

3. The water purifier with self-cleaning function of ultrafiltration membrane according to claim 1 or 2, characterized in that: The internal cleaning mechanism (5) further includes a first connecting plate (51) located at the water outlet end of the rotating drum structure (3) and a second connecting plate (52) located at the water inlet end of the rotating drum structure (3), the center of the first connecting plate (51) and the second connecting plate (52) being connected to the center rod (53).

4. The water purifier with self-cleaning function of ultrafiltration membrane according to claim 1 or 2, characterized in that: The outer cleaning structure (6) includes a mounting base (61) disposed on the inner wall of the rotating drum structure (3), and a cleaning block (62) for cleaning the outer side of the ultrafiltration membrane (7) is provided in the mounting base (61).

5. The water purifier with self-cleaning function of ultrafiltration membrane according to claim 1, characterized in that: The outer side of the rotating drum structure (3) is provided with a collar groove (42), a connecting collar (4) is provided on the collar groove (42), a connecting rod (41) is provided on the connecting collar (4), and the connecting rod (41) is connected to the inner wall of the outer shell (1).

6. The water purifier with self-cleaning function of ultrafiltration membrane according to claim 5, characterized in that: The rotating drum structure (3) rotates in the connecting collar (4), and the rotating drum structure (3) drives the internal cleaning mechanism (5) and the external cleaning structure (6) to rotate synchronously.

7. The water purifier with self-cleaning function of ultrafiltration membrane according to claim 1, characterized in that: The water inlet end of the rotating drum structure (3) is provided with a rotating ring (8), and the inner side of the rotating ring (8) is provided with fan blades (81).

8. The water purifier with self-cleaning function of ultrafiltration membrane according to claim 7, characterized in that: The fan blades (81) and the pump motor (2) are positioned correspondingly.

9. The water purifier with self-cleaning function of ultrafiltration membrane according to claim 8, characterized in that: The water pump motor (2) is equipped with a water pump fan blade. When the water pump motor (2) drives the water pump fan blade, the vortex water flow drives the rotating ring (8) to rotate.

10. The water purifier with self-cleaning function of ultrafiltration membrane according to claim 2, characterized in that: The guide groove (32) and the drain port (31) are at least one and are arranged in a ring array in the rotating cylinder structure (3).

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