Composite filter element of water purifier

Abstract

The utility model discloses a composite filter element of a water purifier, which comprises a filter element shell and relates to the field of purifier design, an inserting nozzle is formed at one end of the filter element shell, a sealing ring is formed on the inner side of the inserting nozzle, a main filter element is detachably mounted in the filter element shell, and the tail end of the main filter element is hermetically mounted in the sealing ring of the inserting nozzle; a water inlet and a water purifying port are formed in the outer end of the inserting nozzle, the inner end of the water inlet leads to the outer side of the sealing ring, and the inner end of the water purifying port leads into the sealing ring; an isolation plastic pipe is fixedly mounted in the middle of the main filter element, a purified water inlet and a purified water outlet are formed in the outer end of the insertion nozzle, an auxiliary filter element is fixedly mounted in the isolation plastic pipe, the middle of the auxiliary filter element leads into the purified water outlet, and the purified water inlet leads between the isolation plastic pipe and the auxiliary filter element; compared with the prior art, the utility model has the beneficial effects that the double-layer filtering effect of a single filter element is realized, the number of the filter elements of the whole filtering system is reduced, and meanwhile, the filtering effect of double filter elements can be achieved.

Description

Technical Field

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

[0002] The water purification filter element realizes the filtration of water flow by directly passing the water flow through the filter element. In the prior art (publication number: CN106422447B, publication date: March 1, 2019), a filter element, a filter element assembly and a water purification device are disclosed, which can increase the time for water flow to pass through the filter element, thereby improving the filtration effect. However, in this filtration scheme and the existing filter element schemes, there is only one filtration flow path. When filtering the water source into drinking water, it needs to go through multiple layers of filtration. Therefore, multiple existing filter elements need to be arranged side by side and connected in series through a water path to achieve effective filtration. This method will cause the water purifier to occupy a large space. Therefore, it is necessary to make full use of the internal space of the water purifier and redesign it. Content of the Utility Model

[0003] The utility model overcomes the above deficiencies and provides a technical solution that can solve the above problems.

[0004] A composite water purifier filter element includes a filter element housing. One end of the filter element housing is formed with a plug-in nozzle, and a sealing ring is formed inside the plug-in nozzle. A main filter element is detachably installed inside the filter element housing, and the tail end of the main filter element is sealed and installed in the sealing ring of the plug-in nozzle.

[0005] An inlet and a purified water outlet are formed at the outer end of the plug-in nozzle. The inner end of the inlet leads to the outside of the sealing ring, and the inner end of the purified water outlet leads to the inside of the sealing ring. The outer side wall of the main filter element and the inner wall of the filter element housing are spaced apart from each other. The water enters the sealing ring after passing through the main filter element.

[0006] An isolation plastic pipe is fixedly installed in the middle of the main filter element. A double-hole connector is sealed and installed at the tail end of the isolation plastic pipe. A purified water inlet and a purified water outlet are formed at the outer end of the plug-in nozzle. The inner ends of the purified water inlet and the purified water outlet are respectively connected to the double-hole connector. A secondary filter element is fixedly installed inside the isolation plastic pipe. The middle of the secondary filter element leads to the double-hole connector of the purified water outlet. The double-hole connector of the purified water inlet leads to the space between the isolation plastic pipe and the secondary filter element. The water enters the purified water outlet after passing through the secondary filter element.

[0007] Further: A positioning disk is sleeved and installed at the tail end of the main filter element. At least three first protruding edges are formed on the outer side of the positioning disk, and the at least three first protruding edges are circularly arranged with each other. The positioning disk is in clearance fit with the filter element housing through the at least three first protruding edges.

[0008] Furthermore, a front cover is sleeved and installed at the front end of the main filter element, an end cover is installed in a spiral fit at the front end of the filter element housing, and the front cover is installed in the end cover with a clearance fit.

[0009] Furthermore, at least three second convex edges are formed on the outer side of the double-hole connector, and at least three second convex edges are arranged in a circular array with each other. The double-hole connector is installed at the tail end inside the main filter element through at least three second convex edges.

[0010] Furthermore, a connecting pipe part is connected to the tail end of the secondary filter element, and the middle part of the secondary filter element is connected to the double-hole connector through the connecting pipe part.

[0011] Furthermore, at least three third convex edges are formed on the outer side of the connecting pipe part, and at least three third convex edges are arranged in a circular array with each other. The connecting pipe part is installed at the tail end inside the isolation plastic pipe through at least three second convex edges.

[0012] Furthermore, the water inlet, the purified water outlet, the pure water inlet, and the pure water outlet are arranged staggeredly with each other.

[0013] Furthermore, the secondary filter element adopts a carbon rod.

[0014] Furthermore, the main filter element includes a PP folded filter element and a sintered carbon rod. The sintered carbon rod is fixedly installed inside the PP folded filter element. The PP folded filter element is detachably installed inside the filter element housing. The isolation plastic pipe is fixedly installed inside the sintered carbon rod.

[0015] Furthermore, a one-way valve is fixedly installed inside the water inlet.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows: Water source enters between the filter element housing and the main filter element through the water inlet. Since the inner wall of the filter element housing and the main filter element are arranged separately, the water flow will flow to the outer side of the entire main filter element, thereby increasing its contact area and increasing the filtration speed. The filtered water flow will flow to the middle of the main filter element and be output as purified water through the purified water outlet. At this time, pure water can be obtained. Then, the pure water is input between the inner wall of the isolation plastic pipe and the secondary filter element through the pure water inlet. Similarly, after the water flow passes through the secondary filter element, it is output from the pure water outlet, realizing the effect of double-layer filtration of a single filter element, reducing the number of filter elements in the entire filtration system, and at the same time ensuring its filtration effect.

[0017] Additional aspects and advantages of the present utility model will be given in part in the following description, will become apparent in part from the following description, or will be understood through the practice of the present utility model. Description of the Drawings

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0019] Figure 1 is a schematic structural diagram of the present invention when installed in a water purifier;

[0020] Figure 2 is a schematic structural diagram of the present invention;

[0021] Figure 3 is Figure 2 an exploded structural diagram of;

[0022] Figure 4 is a schematic cross-sectional structural diagram of the first position of the present invention;

[0023] Figure 5 is a schematic cross-sectional structural diagram of the second position of the present invention;

[0024] Figure 6 is Figure 5 an enlarged structural diagram of part A of;

[0025] As shown in the figure: 1. Filter element housing; 2. Plug-in nozzle; 3. Sealing ring; 4. Main filter element; 41. PP folded filter element; 42. Sintered carbon rod; 5. Water inlet; 6. Purified water outlet; 7. Isolation plastic pipe; 8. Double-hole connector; 9. Pure water inlet; 10. Pure water outlet; 11. Sub-filter element; 12. Positioning disk; 13. First raised edge; 14. Front cover; 15. End cover; 16. Second raised edge; 17. Pipe fitting; 18. Third raised edge; 19. Check valve. Detailed implementation manners

[0026] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention.

[0027] Generally, the components of the embodiments of the present invention described and shown in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents the selected embodiments of the present invention.

[0028] Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0029] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0030] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0031] As Figures 1-6 shown, a water purifier composite filter element of the present utility model includes a filter element housing 1. One end of the filter element housing 1 is formed with a plug-in nozzle 2, and a sealing ring 3 is formed inside the plug-in nozzle 2. A main filter element 4 is detachably installed inside the filter element housing 1, and the tail end of the main filter element 4 is hermetically installed inside the sealing ring 3 of the plug-in nozzle 2;

[0032] The outer end of the plug-in nozzle 2 is formed with a water inlet 5 and a purified water outlet 6. The inner end of the water inlet 5 leads to the outside of the sealing ring 3, and the inner end of the purified water outlet 6 leads to the inside of the sealing ring 3. The outer side wall of the main filter element 4 and the inner wall of the filter element housing 1 are arranged separately from each other, and the water inlet 5 conveys water to the inside of the sealing ring 3 after passing through the main filter element 4;

[0033] An isolation plastic pipe 7 is fixedly installed in the middle of the main filter element 4. A double-hole connector 8 is hermetically installed at the tail end of the isolation plastic pipe 7. The outer end of the plug-in nozzle 2 is formed with a purified water inlet 9 and a purified water outlet 10. The inner ends of the purified water inlet 9 and the purified water outlet 10 are respectively connected inside the double-hole connector 8. A secondary filter element 11 is fixedly installed inside the isolation plastic pipe 7. The middle part of the secondary filter element 11 leads to the double-hole connector 8 of the purified water outlet 10. The double-hole connector 8 of the purified water inlet 9 leads to the space between the isolation plastic pipe 7 and the secondary filter element 11, and the purified water inlet 9 conveys water to the inside of the purified water outlet 10 after passing through the secondary filter element 11;

[0034] The principle is as follows: Water source enters between the filter element housing 1 and the main filter element 4 through the water inlet 5. Since the inner wall of the filter element housing 1 and the main filter element 4 are arranged separately, the water flow will flow to the outer side of the entire main filter element 4, thereby increasing its contact area and filtration speed. The filtered water flow will flow to the middle of the main filter element 4 and be output as purified water through the purified water outlet 6. At this time, pure water can be obtained. Then, the pure water is input between the inner wall of the isolation plastic pipe 7 and the secondary filter element 11 through the pure water inlet 9. Similarly, after the water flow passes through the secondary filter element 11, it is output from the pure water outlet 10, achieving the effect of double-layer filtration of a single filter element, reducing the number of filter elements in the entire filtration system, and at the same time ensuring its filtration effect.

[0035] Furthermore: A positioning disk 12 is sleeved and installed at the tail end of the main filter element 4. At least three first convex edges 13 are formed on the outer side of the positioning disk 12. At least three first convex edges 13 are arranged in a circular array with each other. The positioning disk 12 is in clearance fit in the filter element housing 1 through at least three first convex edges 13. The first convex edges 13 can be used to keep a certain distance between the tail end of the main filter element 4 and the inner wall of the filter element housing 1, so that the water flow can pass through, realizing rapid filtration and preventing blockage during filtration.

[0036] Furthermore: A front cover 14 is sleeved and installed at the front end of the main filter element 4. The front end of the filter element housing 1 is helically and cooperatively installed with an end cover 15. The front cover 14 is in clearance fit in the end cover 15. The front cover 14 and the end cover 15 can be used to facilitate the installation and disassembly of the main filter element 4. After being used for a period of time, the main filter element 4 can be separately removed for cleaning or replacement. At the same time, the setting of the end cover 15 can provide positioning for the front cover 14, so that each position on the outer side wall of the entire main filter element 4 can maintain the same distance from the inner wall of the filter element housing 1, thereby enabling the water flow to be evenly distributed to the outer side of the entire main filter element 4, increasing the filtration area, and achieving the effect of rapid filtration.

[0037] Furthermore: At least three second convex edges 16 are formed on the outer side of the double-hole connector 8. At least three second convex edges 16 are arranged in a circular array with each other. The double-hole connector 8 is installed at the tail end inside the main filter element 4 through at least three second convex edges 16. A certain distance is maintained between the outer side wall of the double-hole connector 8 and the inner side of the main filter element 4 to allow the water flow to pass through, realizing rapid filtration and preventing blockage during filtration.

[0038] Furthermore: A connecting pipe member 17 is connected to the tail end of the secondary filter element 11. The middle of the secondary filter element 11 is connected to the double-hole connector 8 through the connecting pipe member 17. The pure water outlet 10 can be stably connected to the inner wall of the secondary filter element 11, and the pure water can be quickly output from the pure water outlet 10 after passing through the secondary filter element 11.

[0039] Furthermore: at least three third raised edges 18 are formed on the outer side of the connecting pipe 17, and the at least three third raised edges 18 are arranged in a circular array with each other. The connecting pipe 17 is installed at the tail end on the inner side of the isolating plastic tube 7 through at least three second raised edges 16; a certain distance is maintained between the connecting pipe 17 and the isolating plastic tube 7, so that pure water can flow through and achieve rapid filtration.

[0040] Furthermore: the water inlet 5, the purified water outlet 6, the pure water inlet 9, and the pure water outlet 10 are staggered with each other so that each inlet does not affect each other, and one filter element can achieve multiple filtering effects without the need to equip multiple filter elements to form a filtering system, thereby reducing the space occupied by the filter element.

[0041] Furthermore: the secondary filter element 11 is made of a carbon rod.

[0042] Further: the main filter element 4 includes a pp folded filter element 41 and a sintered carbon rod 42, the sintered carbon rod 42 is fixedly installed on the inner side of the pp folded filter element 41, the pp folded filter element 41 is detachably installed in the filter element housing 4, and the isolation plastic tube 7 is fixedly installed on the inner side of the sintered carbon rod 42; the main filter element 4 can achieve the effect of a composite filter element, and the water flow can be filtered through the pp folded filter element 41 and the sintered carbon rod 42, and the filtering effect is better.

[0043] Furthermore: a one-way valve 19 is fixedly installed in the water inlet 5, which can effectively prevent the water source from flowing back.

[0044] This embodiment does not impose any formal restrictions on the shape, material, structure, etc. of the utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model are within the protection scope of the technical solution of the utility model.

Claims

1. A composite filter element for a water purifier, comprising a filter element housing, characterized in that: A plug-in nozzle is formed at one end of the filter element housing, a sealing ring is formed on the inner side of the plug-in nozzle, a main filter element is detachably installed in the filter element housing, and the tail end of the main filter element is sealed in the sealing ring of the plug-in nozzle; The outer end of the plug nozzle is formed with a water inlet and a water purification port, the inner end of the water inlet leads to the outside of the sealing ring, and the inner end of the water purification port leads to the inside of the sealing ring. The outer wall of the main filter element and the inner wall of the filter element shell are arranged to be separated from each other, and the water inlet passes through the main filter element and then delivers water to the sealing ring; An isolation plastic tube is fixedly installed in the middle of the main filter element, and a double-hole connector is sealed at the rear end of the isolation plastic tube. A pure water inlet and a pure water outlet are formed at the outer end of the plug nozzle, and the inner ends of the pure water inlet and the pure water outlet are respectively connected to the double-hole connector. An auxiliary filter element is fixedly installed in the isolation plastic tube, and the middle of the auxiliary filter element leads to the double-hole connector of the pure water outlet. The double-hole connector of the pure water inlet leads between the isolation plastic tube and the auxiliary filter element, and the pure water inlet is transported to the pure water outlet after passing through the auxiliary filter element.

2. The composite filter element of a water purifier according to claim 1, wherein: The tail end of the main filter element is sleeved with a positioning plate, and the outer side of the positioning plate is formed with at least three first raised edges, which are arranged in a circular array with each other. The positioning plate is fitted in the filter element housing through the gaps between the at least three first raised edges.

3. A composite filter element for a water purifier according to any one of claims 1 or 2, characterized in that: The front end of the main filter element is sleeve-mounted with a front cover, the front end of the filter element housing is spirally mounted with an end cover, and the front cover is gap-fittedly mounted in the end cover.

4. The composite filter element for a water purifier according to claim 1, wherein: At least three second raised edges are formed on the outer side of the double-hole connector, and the at least three second raised edges are arranged in a circular array with each other. The double-hole connector is installed at the rear end of the inner side of the main filter element through the at least three second raised edges.

5. A composite filter element for a water purifier according to any one of claims 1 or 4, characterized in that: The tail end of the auxiliary filter element is connected with a connecting piece, and the middle part of the auxiliary filter element is connected with a double-hole connector through the connecting piece.

6. The composite filter element for a water purifier according to claim 5, wherein: At least three third raised edges are formed on the outer side of the connecting pipe, and the at least three third raised edges are arranged in a circular array with each other. The connecting pipe is installed at the tail end of the inner side of the isolation plastic pipe through at least three second raised edges.

7. The composite filter element of a water purifier according to claim 1, wherein: The water inlet, the water purification port, the purified water inlet and the purified water outlet are arranged staggered with each other.

8. The composite filter element for a water purifier according to claim 1, wherein: The auxiliary filter element adopts a carbon rod.

9. The composite filter element of a water purifier according to claim 1, wherein: The main filter element comprises a pp pleated filter element and a sintered carbon rod, the sintered carbon rod is fixedly installed on the inner side of the pp pleated filter element, the pp pleated filter element is detachably installed in the filter element housing, and the isolation plastic tube is fixedly installed on the inner side of the sintered carbon rod.

10. A composite filter element for a water purifier according to claim 1, characterized in that: A one-way valve is fixedly installed in the water inlet.

Images