Filter element and water purifier

Abstract

The utility model discloses a filter element and water purifier relates to water purification field, including collector tube and filter membrane, a plurality of filter membrane is wound along the circumference of collector tube in order to form the stack structure on collector tube, filter membrane along the winding direction has first end and the second end that sets up relative to first end, the first end and the second end are at least partially joined to form a closed loop. The utility model has the advantages of long service life and convenience in use.

Description

Technical Field

[0001] The utility model relates to the technical field of water purification, and particularly relates to a filter element and a water purifier. Background Art

[0002] The filter element is the core filtering component of the water purifier. Through the filtering function of the filter element, harmful substances such as impurities, peculiar smells, residual chlorine, bacteria, and viruses in water can be removed, so as to provide safer and healthier drinking water.

[0003] The most common filter element is a disposable filter element, which is discarded after completing the filtering task. Therefore, waste is generated every time the filter element is replaced, increasing the amount of garbage disposal and causing a certain burden on the environment. This is contrary to the current advocated environmental protection and energy-saving concepts.

[0004] Therefore, in the related art, a filter element with multiple filter membrane units appears. When the outer membrane unit filters for a period of time, the user can manually tear off the used membrane unit, improving the utilization rate and service life of the filter element. However, impurities and particulate matters are likely to penetrate into the next layer of the filter membrane unit in this kind of filter element, accelerating the loss of the membrane unit and shortening the service life of the filter element. Summary of the Utility Model

[0005] The utility model aims to solve one of the technical problems in the related art to a certain extent. For this purpose, the utility model provides a filter element and a water purifier, which have the advantages of long service life and convenient use.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A filter element includes a liquid collecting pipe and filter membranes. Multiple filter membranes are sequentially wound around the circumferential direction of the liquid collecting pipe to form a stacked structure on the liquid collecting pipe. The filter membrane has a first end and a second end opposite to the first end along the winding direction, and at least part of the first end and the second end are joined to form a closed loop.

[0008] In this application, multiple filter membranes are sequentially wound around the liquid collecting pipe to form a stacked structure for filtering liquid. A single filter membrane is wound around the circumferential direction of the liquid collecting pipe. The filter membrane has a first end and a second end opposite to each other. At least part of the first end and the second end are combined to form a closed loop, preventing impurities and particulate matters from penetrating into the next layer, having a long service life, and a single filter membrane can be torn off by separating the first end and the second end, which is convenient to use.

[0009] Optionally, a connecting portion is provided at the first end, and at least part of the second end is fixedly connected to the connecting portion.

[0010] Optionally, an extending portion is formed at the first end relative to the closed loop.

[0011] Optionally, the thickness of the filter membrane is 0.2 to 0.8 mm.

[0012] Optionally, the filter membrane is provided with a first tear hole band and a second tear hole band disposed opposite to the first tear hole band, and both the first tear hole band and the second tear hole band extend from the first end to the second end.

[0013] Optionally, the filter membrane further includes a first side portion and a second side portion, and both the first side portion and the second side portion are disposed between the first end and the second end; the filter element further includes a first end cap and a second end cap, the first end cap is joined to the first side portion, and the second end cap is joined to the second side portion.

[0014] Optionally, a hot melt adhesive layer is provided between the first side portion and the first end cap and between the second side portion and the second end cap.

[0015] Optionally, the liquid collecting tube is a carbon rod or a carbon fiber rod.

[0016] Optionally, the filter membrane is non-woven fabric.

[0017] In addition, the present utility model further provides a water purifier, including a main body and a filter element installed in the main body, and the filter element includes the filter element described in any one of the foregoing items. The beneficial effect reasoning process of the filter element provided by the present utility model is similar to that of the foregoing water purifier, and will not be elaborated herein.

[0018] These features and advantages of the present utility model will be disclosed in detail in the following specific embodiments and the drawings. The best embodiments or means of the present utility model will be elaborated in combination with the drawings, but it is not a limitation to the technical solution of the present utility model. In addition, these features, elements and components appear in multiple in each of the following texts and drawings, and are marked with different symbols or numbers for convenience of representation, but all represent components with the same or similar structures or functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present utility model will be further described below with reference to the drawings:

[0020] Figure 1 is a schematic structural diagram of the filter membrane in the present utility model;

[0021] Figure 2 is an assembly schematic diagram of the filter membrane and the liquid collecting tube in the present utility model;

[0022] Figure 3 is an assembly schematic diagram of the filter membrane and the end cap in the present utility model.

[0023] Among them, 1. Filter membrane; 11. First end; 111. Connecting part; 112. Protruding part; 12. Second end; 13. First side part; 14. Second side part; 15. First tear hole belt; 16. Second tear hole belt; 2. First end cap; 3. Second end cap; 4. Liquid collecting pipe. Detailed implementation manners

[0024] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions from beginning to end. Based on the embodiments in the implementation manners, it is intended to explain the present utility model and should not be construed as a limitation to the present utility model.

[0025] As used in this specification, the phrase "in one embodiment" or "example" or "instance" means that a particular feature, structure, or characteristic described in connection with the embodiment itself can be included in at least one embodiment of the present patent disclosure. The appearances of the phrase "in one embodiment" in various positions in the specification do not necessarily refer to the same embodiment.

[0026] Embodiment:

[0027] As Figure 1 and Figure 2 shown, this embodiment provides a filter element, including a liquid collecting pipe 4 and a filter membrane 1. Multiple filter membranes 1 are wound around the circumference of the liquid collecting pipe 4 in sequence to form a stacked structure on the liquid collecting pipe 4. Along the winding direction, the filter membrane 1 has a first end 11 and a second end 12 opposite to the first end 11. The first end 11 and the second end 12 are at least partially joined to form a closed ring.

[0028] In this embodiment, the filter element includes a liquid collecting pipe 4 and multiple filter membranes 1 stacked on the liquid collecting pipe 4. The liquid collecting pipe 4 is made of a material that allows liquid to pass through and is configured with a liquid outlet, that is, the liquid collecting pipe 4 has a porous structure. In addition, the liquid collecting pipe 4 not only plays the role of collecting liquid, but also can serve as a support structure to provide a stable installation foundation for the multi-layer filter membrane 1. The liquid to be filtered gradually penetrates from the outermost filter membrane 1 to the innermost filter membrane 1. The liquid filtered by the multi-layer filter membrane 1 enters the liquid collecting pipe 4, and the liquid in the liquid collecting pipe 4 is finally discharged from the liquid outlet of the filter element for subsequent use or treatment.

[0029] In the related art, the filter element uses a whole filter membrane 1 wound around the liquid collecting pipe 4 to form a structure of multiple membrane units. The membrane units are separated by an easy-to-tear line, and the easy-to-tear line is composed of multiple small holes to facilitate tearing off a single membrane unit. There is no barrier between the membrane units. Therefore, impurities and particulate matters are likely to leak from the connection between the membrane units to the next layer of membrane units, accelerating the loss of the membrane units, polluting the inner layer of membrane units, affecting the appearance and shortening the service life of the filter element. In this embodiment, the single filter membrane 1 is wound circumferentially around the liquid collecting pipe 4. The filter membrane 1 has a first end 11 and a second end 12 arranged oppositely. The first end 11 and the second end 12 are at least partially combined to form a closed ring, preventing impurities and particulate matters from infiltrating into the next layer, having a long service life, and it is convenient to use by separating the first end 11 and the second end 12 to tear off the single filter membrane 1.

[0030] It should be noted that in this embodiment, multiple filter membranes 1 are configured to be wound around the liquid collecting pipe 4 in sequence, that is, each filter membrane 1 is independently arranged. Therefore, compared with the setting method in the related art of winding a whole filter membrane 1 around the liquid collecting pipe 4 and then dividing it by an easy-to-tear line, each filter membrane 1 in this application can have a specific pore size and filter medium to intercept impurities and particulate matters of different sizes.

[0031] The first end 11 is provided with a connecting portion 111, and at least a part of the second end 12 is fixedly connected to the connecting portion 111.

[0032] In this embodiment, the first end 11 is provided with a connecting portion 111, and at least a part of the second end 12 is fixedly connected to the connecting portion 111. Specifically, in this embodiment, the first end 11 and the connecting portion 111 are welded by ultrasonic welding. The connecting portion 111 can be a welding point, or a longitudinal welding line extending along the filter membrane 1, or a longitudinal welding surface extending along the filter membrane 1. In other embodiments, other methods such as gluing can also be used for fixed connection. In other embodiments, the second end 12 may not be fixedly connected to the first end 11, but fixed by mechanical means such as a cable tie.

[0033] Such as Figure 2 and Figure 3 shown, the protruding part of the first end 11 relative to the closed ring forms a protruding portion 112.

[0034] After the second end 12 is fixedly connected to the connecting portion 111, a part of the first end 11 does not fully participate in the formation of the ring, but protrudes out of the closed ring relatively. This protruding part constitutes a liftable protruding portion 112, which is convenient for the user to lift the protruding portion 112 to quickly and conveniently separate the first end 11 and the second end 12.

[0035] The thickness of the filter membrane 1 is 0.2 - 0.8 mm.

[0036] In this embodiment, the filter membrane 1 within this thickness range can effectively intercept and remove impurities such as fine particulate matter, bacteria, and viruses while ensuring good permeability, ensuring the high efficiency of the filtering effect. The filter membrane 1 can allow a large amount of fluid to pass through quickly and effectively reduce the penetration of pollutants. Preferably, the thickness of the filter membrane 1 is 0.4 - 0.6 mm.

[0037] The filter membrane 1 is provided with a first tear hole band 15 and a second tear hole band 16 disposed opposite to the first tear hole band 15, and both the first tear hole band 15 and the second tear hole band 16 extend from the first end 11 to the second end 12.

[0038] In this embodiment, through the preset tear hole bands, users can more easily tear the filter membrane 1 along these hole bands, thus facilitating replacement or maintenance, reducing the complexity and time cost when replacing the filter membrane 1, and improving work efficiency. In addition, the tear hole bands allow the filter membrane 1 to be torn along a predetermined path, thus maintaining the structural integrity of other parts of the filter membrane 1.

[0039] The filter membrane 1 further includes a first side portion 13 and a second side portion 14, and both the first side portion 13 and the second side portion 14 are disposed between the first end 11 and the second end 12; the filter element further includes a first end cap 2 and a second end cap 3, and the first end cap 2 is joined to the first side portion 13, and the second end cap 3 is joined to the second side portion 14.

[0040] In this embodiment, the end caps are used to seal and support the filter membrane 1, protecting the filter membrane 1 from external dust and other pollutants. In addition, the liquid collecting pipe 4 can also be fixed to the end caps. By joining the first side portion 13 with the first end cap 2 and the second side portion 14 with the second end cap 3, the overall structure of the filter membrane 1 is strengthened, which helps to resist the influence of external factors such as fluid pressure and vibration on the filter membrane 1 and extends its service life.

[0041] There are hot melt adhesive layers between the first side portion 13 and the first end cap 2, and between the second side portion 14 and the second end cap 3.

[0042] In this embodiment, the hot melt adhesive layer melts and solidifies at high temperature, and can form a strong bond, ensuring a tight bond between the first side portion 13 and the second side portion 14 of the filter membrane 1 and the first end cap 2 and the second end cap 3 respectively. Users remove the middle part of the filter membrane 1 by tearing the first tear hole band 15 and the second tear hole band 16, while the first side portion 13 and the second side portion 14 of the filter membrane 1 remain connected to the end caps.

[0043] The liquid collecting pipe 4 is a carbon rod or a carbon fiber rod.

[0044] In this embodiment, the liquid collecting pipe 4 can be a carbon rod or a carbon fiber rod. The carbon rod has strong adsorbability, and its internal porous structure endows it with a strong adsorption capacity, which can adsorb and remove impurities or pollutants in the liquid. It can maintain good stability in a variety of chemical environments and is not prone to react with the components in the liquid. The carbon fiber rod has high strength, high modulus, low density and excellent corrosion resistance.

[0045] The filter membrane 1 is non-woven fabric.

[0046] In this embodiment, the filter membrane 1 is non-woven fabric, which is formed by randomly or directionally arranging fibers to form a network structure and has a large number of tiny pores, so it has good air permeability and filtration performance. In other embodiments, the filter membrane 1 can also be an artificial synthetic fiber material, such as polypropylene, polyacrylonitrile, polyvinyl formaldehyde and polytetrafluoroethylene, etc.

[0047] This embodiment also provides a water purifier, which includes a main body and a filter element installed on the main body, and the filter element includes the aforementioned filter element.

[0048] In this embodiment, when the water purifier works, raw water enters the interior of the main body through the water inlet. After being filtered layer by layer by the filter element, harmful substances such as impurities and odors in the water are removed, and finally clean drinking water is obtained. Users can pick up the purified water through the water outlet for use.

[0049] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Those skilled in the art should understand that the present utility model includes but is not limited to the content described in the drawings and the above specific implementation manner. Any modification that does not deviate from the functional and structural principles of the present utility model will be included in the scope of the claims.

Claims

1. A filter element, comprising a liquid collecting tube (4) and a filter membrane (1), characterized in that: A plurality of filter membranes (1) are sequentially wound along the circumference of the liquid collecting pipe (4) to form a stacked structure on the liquid collecting pipe (4); the filter membrane (1) has a first end (11) and a second end (12) arranged opposite to the first end (11) along the winding direction; the first end (11) and the second end (12) are at least partially joined to form a closed loop.

2. The filter element according to claim 1, characterized in that: The first end (11) is provided with a connecting portion (111), and the second end (12) is at least partially fixed to the connecting portion (111).

3. The filter element according to claim 2, characterized in that: The first end (11) forms a protruding portion (112) relative to the closed loop.

4. The filter element according to claim 1, characterized in that: The thickness of the filter membrane (1) is 0.2-0.8 mm.

5. The filter element according to any one of claims 1 to 4, characterized in that: The filter membrane (1) is provided with a first tear hole band (15) and a second tear hole band (16) arranged opposite to the first tear hole band (15), and the first tear hole band (15) and the second tear hole band (16) both extend from the first end (11) to the second end (12).

6. The filter element according to any one of claims 1 to 4, characterized in that: The filter membrane (1) further comprises a first side portion (13) and a second side portion (14), wherein the first side portion (13) and the second side portion (14) are both arranged between the first end (11) and the second end (12); the filter element further comprises a first end cover (2) and a second end cover (3), wherein the first end cover (2) is joined to the first side portion (13), and the second end cover (3) is joined to the second side portion (14).

7. The filter element according to claim 6, characterized in that: A hot melt adhesive layer is provided between the first side portion (13) and the first end cover (2), and between the second side portion (14) and the second end cover (3).

8. The filter element according to any one of claims 1 to 4, characterized in that: The liquid collecting tube (4) is a carbon rod or a carbon fiber rod.

9. The filter element according to any one of claims 1 to 4, characterized in that: The filter membrane (1) is a non-woven fabric.

10. A water purifier, comprising a body and a filter element installed on the body, characterized in that: The filter element comprises the filter element according to any one of claims 1 to 9.

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