Filter element structure

Abstract

The utility model discloses a filter element structure which comprises a shell and an outer cover connected to one end of the shell in a sealing manner, an outer water inlet pipe, an outer wastewater discharge pipe and an outer water outlet pipe are arranged on the outer cover side by side, a front filter element is mounted in the shell, a bottom cover is mounted at the lower end of the front filter element in a sealing manner, and a reverse osmosis membrane filter element is mounted in the front filter element. The reverse osmosis membrane filter element comprises a water inlet end, a wastewater outlet end and a pure water outlet pipe positioned in the reverse osmosis membrane filter element, a connecting seat is hermetically mounted at the upper end of the front filter element, the upper end of the reverse osmosis membrane filter element is hermetically inserted into the lower end of the connecting seat, an inner shell is hermetically mounted at the upper end of the connecting seat, and a rear filter element is mounted in the inner shell; an inner wastewater discharge pipe and an inner purified water outlet pipe are arranged on the upper row of the inner shell and are correspondingly and hermetically inserted with the outer wastewater discharge pipe and the outer purified water outlet pipe; the multi-stage water purifier can perform multi-stage filtration on water, is good in water purification effect and small in size, and can reduce the size of the whole water purifier.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment equipment, in particular to a filter element structure used for water treatment equipment. Background Art

[0002] A water purifier, also known as a water purifier or water purifier, is a water treatment device that deeply filters and purifies water, making it suitable for drinking or daily use. It can filter out floating debris, heavy metals, bacteria, viruses, residual chlorine, sediment, rust, and microorganisms. Water filtration can be accomplished using one or more filter cartridges. The more filter cartridges, the better the water quality. Filter cartridges include PP cotton, granular activated carbon, precision compressed activated carbon, reverse osmosis membrane, ultrafiltration membrane, and post-activated carbon.

[0003] Existing water purifiers typically install multiple independent filter cartridges in series and side by side to produce purer drinking water. However, these multiple independent filter cartridges take up more space, making the water purifier larger and unable to meet the needs of some users for a compact water purifier. Furthermore, the multiple independent filter cartridges require corresponding water connection structures, which makes water leakage more likely. Each independent filter cartridge requires its own housing and other components, increasing costs and making assembly, disassembly, and replacement more difficult. Utility Model Content

[0004] In order to overcome at least one of the technical problems existing in the prior art, the utility model provides a filter element structure, which can perform multi-stage filtration of water, has good water purification effect, and is small in size, thereby reducing the overall volume of the water purifier and meeting users' needs for small water purifiers.

[0005] A filter element structure comprises an outer shell, an outer cover sealably connected to one end of the outer shell, an external water inlet pipe, an external waste water pipe and an outgoing clean water pipe are arranged side by side on the outer cover, a pre-filter element is installed in the outer shell, a bottom cover is sealably installed at the lower end of the pre-filter element, a reverse osmosis membrane filter element is installed in the pre-filter element, the reverse osmosis membrane filter element comprises a water inlet end, a waste water outlet end and a pure water outlet pipe located in the reverse osmosis membrane filter element, a connecting seat is sealably installed at the upper end of the pre-filter element, the upper end of the reverse osmosis membrane filter element is sealably plugged into the lower end of the connecting seat, an inner shell is sealably installed at the upper end of the connecting seat, a post-filter element is installed in the inner shell, an internal waste water pipe and an internal clean water pipe are arranged on the upper row of the inner shell, and the internal waste water pipe and the internal clean water pipe are sealably plugged into the external waste water pipe and the outgoing clean water pipe accordingly.

[0006] In some embodiments, an outer ring, a middle ring, and an inner ring are sequentially provided on the bottom cover and the lower end of the connecting seat. The two ends of the pre-filter element are correspondingly sealed and plugged into the outer rings of the bottom cover and the connecting seat. A plug-in tube is provided at the lower end of the reverse osmosis membrane filter element, and the plug-in tube is plugged into the inner ring of the bottom cover. A water-passing space is formed between the water inlet end of the reverse osmosis membrane filter element and the end face of the middle ring. The upper end of the reverse osmosis membrane filter element is sealed and plugged into the middle ring of the connecting seat. The pure water outlet pipe extends from the upper end of the reverse osmosis membrane filter element, and the pure water outlet pipe is plugged into the inner ring. A central pipe is provided in the middle of the upper end of the connecting seat. A pure water channel is provided between the inner ring and the central tube, one end of the pure water channel is connected with the inner ring, and the other end passes through the side wall of the central tube. An annular groove is concentrically provided on the periphery of the inner ring, and at least one wastewater channel is provided in the annular groove. The wastewater channel is connected with the inner cavity at the upper end of the central tube, and the top of the central tube is sleeved with the inner tube provided on the inner shell. The inner tube is connected with the inner waste water pipe and the outer waste water pipe. The post-filter element is sleeved on the periphery of the central tube, and the post-filter element is sleeved with the outer tube provided on the inner shell. The area between the outer tube and the inner wall of the inner shell is connected with the inner clean water pipe and the outer clean water pipe.

[0007] In some embodiments, at least one sealing ring is sleeved on both the internal waste water pipe and the internal clean water pipe.

[0008] In some embodiments, a U-shaped groove is provided at the top of the outer cover, and the external water inlet pipe, external waste water pipe and external clean water pipe are arranged side by side in the U-shaped groove, and the height of the external water inlet pipe, external waste water pipe and external clean water pipe is lower than or equal to the top plane of the outer cover.

[0009] In some embodiments, the housing is a hollow tube with an opening at the top, and the pre-filter element and the post-filter element are hollow tubes with openings at both ends.

[0010] In some embodiments, the front filter element is a PP cotton filter element or a carbon fiber filter element, and the rear filter element is an activated carbon filter element.

[0011] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the present application combined with the connector seat;

[0014] Figure 2 It is a schematic diagram of the three-dimensional structure of this application;

[0015] Figure 3 It is a side structural diagram of this application;

[0016] Figure 4 It is a schematic diagram of the split structure of this application;

[0017] Figure 5 yes Figure 4 Schematic diagram of further split structure;

[0018] Figure 6 yes Figure 5 Enlarged view of point A in the middle;

[0019] Figure 7 yes Figure 6 Schematic diagram of the split structure;

[0020] Figure 8 It is a schematic diagram of the three-dimensional structure of the reverse osmosis membrane filter element;

[0021] Figure 9 It is a schematic diagram of the three-dimensional structure of the inner shell;

[0022] Figure 10 1. It is a top view schematic diagram of the three-dimensional structure of the connecting seat;

[0023] Figure 11 1. It is a schematic diagram of the top plan structure of the connecting seat;

[0024] Figure 12 1. It is a schematic diagram of the three-dimensional structure of the connecting seat when viewed from above;

[0025] Figure 13 It is a schematic diagram of the upward plan structure of the connecting seat.

[0026] Reference numerals:

[0027] Shell 1;

[0028] Outer cover 2, external water inlet pipe 200, external waste water pipe 201, clean water pipe 202, U-shaped groove 203;

[0029] Pre-filter element 3, bottom cover 4;

[0030] Reverse osmosis membrane filter element 5, water inlet end 500, wastewater outlet end 501, pure water outlet pipe 502, water flow space 503, plug-in pipe 504;

[0031] Connecting seat 6, outer ring 600, middle ring 601, inner ring 602, central tube 603, pure water channel 604, annular groove 605, waste water channel 606;

[0032] Inner shell 7, inner waste water pipe 700, inner clean water pipe 701, inner pipe 702, outer pipe 703;

[0033] Rear filter element 8, connector seat 9, sealing ring 10. DETAILED DESCRIPTION

[0034] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0035] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientations or positional relationships indicated by terms such as "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", and "outside", are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0036] In the description of this utility model, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0037] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0038] Reference Figures 1-13, a filter element structure, the filter element is cylindrical, which includes a shell 1, an outer cover 2 sealed and connected to the top of the shell 1, an external water inlet pipe 200, an external waste water pipe 201 and an outgoing clean water pipe 202 are arranged side by side on the outer cover 2, a pre-filter element 3 is installed in the shell 1, a bottom cover 4 is sealed and installed at the lower end of the pre-filter element 3, a reverse osmosis membrane filter element 5 is installed in the pre-filter element 3, the reverse osmosis membrane filter element 5 includes a water inlet end 500, a waste water outlet end 501 and a reverse osmosis membrane filter element located at 5, the pure water outlet pipe 502 in the middle of the interior is sealed with a connecting seat 6 at the upper end of the pre-filter element 3, the upper end of the reverse osmosis membrane filter element 5 is sealed and plugged into the lower end of the connecting seat 6, the inner shell 7 is sealed and installed at the upper end of the connecting seat 6, the post-filter element 8 is installed in the inner shell 7, and the inner waste water pipe 700 and the inner clean water outlet pipe 701 are arranged on the upper row of the inner shell 7. The inner waste water pipe 700 and the inner clean water outlet pipe 701 are sealed and plugged into the external waste water pipe 201 and the outgoing clean water pipe 202 respectively.

[0039] During use, the external water inlet pipe 200, the external waste water pipe 201 and the external clean water pipe 202 are plugged into the joint seat 9 of the water purifier. The pressurized tap water enters the outer shell 1 through the external water inlet pipe 200, and the tap water enters the middle hole of the pre-filter element 3 after the initial filtration through the tube wall of the pre-filter element 3. The primary filtered water then enters from the lower end of the reverse osmosis membrane filter element 5, and then the secondary filtered water enters the middle hole of the filter element through the connecting seat 6. The secondary filtered water is filtered three times through the tube wall of the post-filter element 8, and then flows out through the internal clean water pipe 701 and the external clean water pipe 202 for user use; the wastewater generated during filtration by the reverse osmosis membrane filter element 5 flows out through the upper end face, and then is discharged through the internal waste water pipe 700 and the external waste water pipe 201. This application can perform three-stage filtration on water, with good water purification effect. Its small size reduces the volume of the entire water purifier, achieves portability, and meets users' needs for small water purifiers.

[0040] In some embodiments, an outer ring 600, a middle ring 601, and an inner ring 602 are concentrically arranged on the bottom cover 4 and the lower end of the connecting seat 6. The two ends of the pre-filter element 3 are correspondingly sealed and plugged into the outer ring 600 of the bottom cover 4 and the connecting seat 6. Tap water must be filtered through the tube wall of the pre-filter element 3 before entering the middle hole of the pre-filter element 3, and then flow into the reverse osmosis membrane filter element 5. A plug-in tube 504 is concentrically arranged in the middle of the lower end of the reverse osmosis membrane filter element 5. The plug-in tube 504 is plugged into the inner ring 601 of the bottom cover 4. 02, so that the two are connected and fixed, a water space 503 is formed between the water inlet end 500 of the reverse osmosis membrane filter element 5 and the end face of the middle ring 601, and the primary filtered water after the primary filtration by the pre-filter element 3 can enter from the water inlet end 500 of the reverse osmosis membrane filter element 5 after passing through the water space 503; the upper end of the reverse osmosis membrane filter element 5 is sealed and plugged into the middle ring 601 of the connecting seat 6, and the pure water outlet pipe 502 extends from the upper end of the reverse osmosis membrane filter element 5, and the pure water outlet pipe 502 is plugged into the inner ring 602, and is connected to the connecting seat. 6 is provided with a central tube 603 in the middle of the upper end, and a pure water channel 604 is provided between the inner ring 602 and the central tube 603, which is roughly L-shaped or arc-shaped. One end of the pure water channel 604 is connected to the inner ring 602, and the other end of the pure water channel 604 passes through the side wall of the central tube 603. The water in the pure water pipe 502 flows through the pure water channel 604 to the middle hole of the rear filter element 8. The water filtered by the rear filter element 8 flows out through the inner clean water pipe 701 and the outer clean water pipe 202; the outer end of the inner ring 602 is connected to the inner ring 602, and the other end of the pure water channel 604 passes through the side wall of the central tube 603. An annular groove 605 is concentrically opened, and three wastewater channels 606 are opened in the annular groove 605, which vertically penetrate the bottom wall of the central tube 603. The wastewater channel 606 is connected with the inner cavity of the upper end of the central tube 603. The wastewater flowing out from the wastewater outlet 501 of the reverse osmosis membrane filter element 5 passes through the wastewater channel 606 and the inner cavity of the upper end of the central tube 603, and then flows out from the internal wastewater pipe 700 and the external wastewater pipe 201. The wastewater channel 606 is not connected with the pure water channel 604 to prevent the wastewater from mixing with the pure water. The top of the central tube 603 is sleeved with the inner tube 702 arranged inside the inner shell 7, the inner tube 702 is connected to the internal waste water pipe 700 and the external waste water pipe 201, the post filter element 8 is sleeved on the periphery of the central tube 603, the post filter element 8 is sleeved with the outer tube 703 arranged on the inner shell 7, and the area between the outer tube 703 and the inner wall of the inner shell 7 is connected to the internal clean water pipe 701 and the external clean water pipe 202.

[0041] In some embodiments, two stacked sealing rings 10 are sleeved on the internal waste water pipe 700 and the internal clean water pipe 701 to improve the sealing and anti-leakage performance.

[0042] In some embodiments, a U-shaped groove 203 is provided at the top of the outer cover 2, and its two ends pass straight through the side wall of the outer cover 2. The external water inlet pipe 200, the external waste water pipe 201 and the external clean water pipe 202 are all arranged side by side in the U-shaped groove 203. The heights of the external water inlet pipe 200, the external waste water pipe 201 and the external clean water pipe 202 are lower than or equal to the top plane of the outer cover 2. When the outer cover 2 falls to the ground or collides with other objects, damage to the external water inlet pipe 200, the external waste water pipe 201 and the external clean water pipe 202 can be avoided or reduced, preventing them from breaking and improving their service life.

[0043] In some embodiments, the outer shell 1 is a hollow tube with an opening at the top, the outer cover 2 is sealed and installed at the opening of the outer shell 1, and the front filter element 3 and the rear filter element 8 are hollow tubes with openings at both ends. This structural design facilitates the installation and disassembly of various components, and is conducive to achieving the best filtering effect and reducing the volume.

[0044] In some embodiments, the pre-filter element 3 is a PP cotton filter element, a carbon fiber filter element, a cotton-carbon composite filter element, etc., which can be used to remove various visible objects, dust and impurities in tap water to achieve primary filtration; the reverse osmosis membrane filter element 5 can be used to remove bacteria, viruses, spores and other substances in the water to achieve secondary filtration; the post-filter element 8 is an activated carbon filter element, which can be used to further improve the taste, remove odors, and achieve tertiary filtration.

[0045] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. Although the embodiments of the present invention have been shown and described, ordinary technicians in this field can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and purpose of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A filter element structure comprising a housing and an outer cover sealed to one end of the housing, characterized in that: An external water inlet pipe, an external waste water pipe and an outgoing clean water pipe are arranged side by side on the outer cover, a pre-filter element is installed in the outer shell, a bottom cover is seal-mounted at the lower end of the pre-filter element, a reverse osmosis membrane filter element is installed in the pre-filter element, the reverse osmosis membrane filter element comprises a water inlet end, a waste water outlet end and a pure water outlet pipe located in the reverse osmosis membrane filter element, a connecting seat is seal-mounted at the upper end of the pre-filter element, the upper end of the reverse osmosis membrane filter element is seal-plugged into the lower end of the connecting seat, an inner shell is seal-mounted at the upper end of the connecting seat, a post-filter element is installed in the inner shell, an internal waste water pipe and an internal clean water pipe are arranged on the upper row of the inner shell, and the internal waste water pipe and the internal clean water pipe are seal-plugged into the external waste water pipe and the outgoing clean water pipe accordingly.

2. The filter element structure according to claim 1, wherein: An outer ring, a middle ring, and an inner ring are sequentially arranged on the bottom cover and the lower end of the connecting seat. The two ends of the pre-filter element are correspondingly sealed and plugged into the outer rings of the bottom cover and the connecting seat. A plug-in pipe is provided at the lower end of the reverse osmosis membrane filter element, and the plug-in pipe is plugged into the inner ring of the bottom cover. A water-passing space is formed between the water inlet end of the reverse osmosis membrane filter element and the end face of the middle ring. The upper end of the reverse osmosis membrane filter element is sealed and plugged into the middle ring of the connecting seat. The pure water outlet pipe extends from the upper end of the reverse osmosis membrane filter element, and the pure water outlet pipe is plugged into the inner ring. A central pipe is provided in the middle of the upper end of the connecting seat. A pure water channel is provided between the central tube, one end of the pure water channel is connected with the inner ring, and the other end passes through the side wall of the central tube. An annular groove is concentrically provided on the periphery of the inner ring, and at least one wastewater channel is provided in the annular groove. The wastewater channel is connected with the inner cavity at the upper end of the central tube, and the top of the central tube is sleeved with the inner tube provided on the inner shell, and the inner tube is connected with the inner waste water pipe and the outer waste water pipe. The post-filter element is sleeved on the periphery of the central tube, and the post-filter element is sleeved with the outer tube provided on the inner shell. The area between the outer tube and the inner wall of the inner shell is connected with the inner clean water pipe and the outer clean water pipe.

3. The filter element structure according to claim 1 or 2, characterized in that: At least one sealing ring is sleeved on the internal waste water pipe and the internal clean water pipe.

4. The filter element structure according to claim 3, wherein: A U-shaped groove is provided on the top of the outer cover, and the external water inlet pipe, external waste water pipe and external clean water pipe are arranged side by side in the U-shaped groove. The height of the external water inlet pipe, external waste water pipe and external clean water pipe is lower than or equal to the top plane of the outer cover.

5. The filter element structure according to claim 4, wherein: The outer shell is a hollow tube body with an opening at the top, and the front filter element and the rear filter element are hollow tube bodies with openings at both ends.

6. The filter element structure according to claim 5, wherein: The front filter element is a PP cotton filter element or a carbon fiber filter element, and the rear filter element is an activated carbon filter element.

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