Filter element cleaning structure and water purifier

Abstract

The utility model discloses a filter element cleaning structure which comprises a shell (1) in a barrel shape; the filter element (2) is axially arranged in the shell (1), and an interlayer (10) is formed between the filter element (2) and the shell (1); the water purifier is characterized in that at least two spray pipes (3) which are arranged in the circumferential direction of the filter element (2) at intervals are arranged in the interlayer (10), each spray pipe (3) extends in the axial direction of the filter element (2), each spray pipe (3) is provided with at least two first spray holes (31) which are formed in the length direction of the spray pipe (3) at intervals, and the first spray holes (31) face the filter element (2); and the water outlet end of the previous spray pipe (3) is connected with the water inlet end of the next spray pipe (3) through a connecting pipe (30). The utility model further discloses a water purifier applying the filter element cleaning structure. Compared with the prior art, the filter element cleaning structure does not need manual operation and is high in cleaning efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of purification equipment, in particular to a filter element cleaning structure and a water purifier. Background Art

[0002] At present, water purifiers have become a common household appliance. Various water purifiers are available on the market. One of the key core structures of a water purifier is its filter with a water purification membrane. The filter generally includes a housing and a filter element arranged in the housing. The housing has a water inlet port, a water purification port and a wastewater port. Tap water enters the housing through the water inlet port. After the filter element purifies the water, the purified water is discharged through the water purification port, and the wastewater is discharged through the wastewater port. For details, please refer to

[0003] As the use time increases, impurities in the water will clog the filter element and make it saturated. At this time, the filter element needs to be removed from the housing for cleaning. Existing water purifiers have made improvements in the structure of replacing the filter element to achieve the purpose of convenient placement. For details, please refer to the Chinese application "A quick installation filter element structure" with patent number CN202010782112.2.

[0004] However, in the above scheme, each cleaning requires manual operation, and the cleaning efficiency is low. Utility Model Content

[0005] The first technical problem to be solved by the utility model is to provide a filter element cleaning structure which does not require manual operation and has high cleaning efficiency in view of the current status of the prior art.

[0006] The second technical problem to be solved by the utility model is to provide a water purifier using the filter element cleaning structure.

[0007] The utility model solves the above-mentioned first technical problem by adopting the following technical solution: a filter element cleaning structure, comprising:

[0008] The shell is cylindrical and has a water inlet, a clean water outlet and a waste water outlet; and

[0009] A filter element is axially arranged in the housing, and an interlayer is formed between the outer wall of the filter element and the inner wall of the housing;

[0010] It is characterized in that: at least two nozzles are arranged at intervals along the circumference of the filter element in the interlayer, each of the nozzles extends along the axial direction of the filter element, and at least two first spray holes are opened on the nozzle and arranged at intervals along its length direction, the first spray holes face the filter element, and the water outlet end of the previous nozzle is connected to the water inlet end of the latter nozzle through a connecting pipe.

[0011] In order to spread the cleaning water flow around the entire filter element and ensure the cleaning and flushing effect, the interlayer is provided with an internally hollow annular float, which is arranged around the outer periphery of the filter element, and has at least two second spray holes arranged at intervals along its circumferential direction on its inner peripheral wall;

[0012] The annular float is provided with lugs corresponding to the nozzles, and each lug can be slidably sleeved on the outer periphery of the corresponding nozzle.

[0013] In order to accelerate the water flow and push the annular float to move downward while achieving the purpose of scrubbing, the spray pipe is arranged vertically and the second spray hole is arranged obliquely upward.

[0014] In order to push the annular float to move downward, at least two third spray holes are arranged at intervals along the circumference of the annular float on the top wall.

[0015] In order to ensure that the annular float can always obtain water flow from the nozzle to assist its movement during movement, the height of the annular float in the inner cavity of the lug is recorded as a, and the distance between two adjacent first nozzles is recorded as b. The relationship between a and b satisfies: a>b.

[0016] In order to facilitate the introduction of cleaning water and the discharge of waste water, the shell is provided with a cleaning port, the water inlet end of the nozzle located at the front is fluidly connected to the cleaning port, and the water outlet end of the nozzle located at the back is fluidly connected to the waste water port.

[0017] In order to simplify the nozzle structure, there are two nozzles, which are located on both sides of the filter element respectively. The connecting pipe is a curved pipe and extends along the circumference of the filter element. The two ends of the connecting pipe are respectively connected to the bottom ends of the two nozzles.

[0018] In order to automatically switch between water purification mode and cleaning mode according to needs, it also includes

[0019] A water inlet pipeline, the outlet end of which is connected to the water inlet;

[0020] A cleaning pipeline, the outlet end of which is connected to the cleaning port;

[0021] A water purification pipeline, the inlet end of which is connected to the water purification port; and

[0022] A wastewater pipeline, the inlet end of which is connected to the wastewater outlet;

[0023] Valves are provided on the water inlet pipeline and the cleaning pipeline, so that the filter element cleaning structure has at least two states:

[0024] In the first state, the water inlet pipeline is connected and the cleaning pipeline is blocked;

[0025] In the second state, the cleaning pipeline is connected and the water inlet pipeline is blocked.

[0026] In order to simplify the valve, the water inlet pipeline and the cleaning pipeline share the same water inlet section and three-way valve, and the three-way valve has a water inlet end, a first water outlet end and a second water outlet end. The water inlet end of the three-way valve is connected to the water inlet section shared by the water inlet pipeline and the cleaning pipeline, the first water outlet end of the three-way valve is connected to the water outlet section of the water inlet pipeline, and the second water outlet end of the three-way valve is connected to the water outlet section of the cleaning pipeline.

[0027] The technical solution adopted by the utility model to solve the second technical problem is: a water purifier using the filter element cleaning structure.

[0028] Compared with the prior art, the advantages of the utility model are:

[0029] (1) By arranging a connected spray pipe in the interlayer, cleaning water can be introduced to spray and rinse the filter element, without manual operation and with high cleaning efficiency;

[0030] (2) By setting a hollow annular float in the interlayer and sliding it on the nozzle, the spray hole on the annular float can diffuse the cleaning water flow around the entire filter element, so that the cleaning range can cover the entire filter element and ensure the cleaning and flushing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a structural schematic diagram of an embodiment of the filter element cleaning structure of the utility model;

[0032] Figure 2 for Figure 1 Schematic diagram of the three-dimensional structure of the middle shell, filter element, nozzle and annular float;

[0033] Figure 3 for Figure 2 A longitudinal cross-sectional view of

[0034] Figure 4 for Figure 2 Schematic diagram of the three-dimensional decomposition of

[0035] Figure 5 for Figure 4 Schematic diagram of the three-dimensional structure of the central nozzle and the annular float;

[0036] Figure 6 for Figure 5 Longitudinal section view of the middle annular float. DETAILED DESCRIPTION

[0037] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0038] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0039] like Figures 1 to 6 As shown, a preferred embodiment of the water purifier with a filter element cleaning structure of the utility model is shown. In this embodiment, only the filter element cleaning structure in the water purifier is shown, and other structures of the water purifier adopt conventional structures, which will not be repeated here.

[0040] The filter element cleaning structure includes a housing 1, a filter element 2, a nozzle 3, an annular float 4, a water inlet pipeline 5, a cleaning pipeline 6, a clean water pipeline 7, a waste water pipeline 8 and a three-way valve 9.

[0041] Specifically, the shell 1 is cylindrical and arranged vertically, with a water inlet 11 and a clean water outlet 12 at the top of the shell 1 , a waste water outlet 13 at the bottom of the side of the shell 1 , and a cleaning outlet 14 at the top of the side of the shell 1 .

[0042] The filter element 2 is axially arranged in the housing 1, and an interlayer 10 is formed between the outer wall of the filter element 2 and the inner wall of the housing 1. The inner cavity of the filter element 2 is fluidically connected to the above-mentioned clean water port 12, and the interlayer 10 is fluidically connected to the above-mentioned water inlet 11 and waste water port 13.

[0043] The nozzle 3 is located in the interlayer 10 and extends along the axial direction of the filter element 2. The nozzle 3 is provided with a plurality of first spray holes 31 arranged at intervals along the length direction thereof, and the first spray holes 31 face the filter element 2. There are multiple nozzles 3 and they are arranged at intervals along the circumference of the filter element 2. The water outlet end of the previous nozzle 3 is connected to the water inlet end of the next nozzle 3 through a connecting pipe 30. The water inlet end of the nozzle 3 located at the front is fluidly connected to the above-mentioned cleaning port 14, and the water outlet end of the nozzle 3 located at the back is fluidly connected to the above-mentioned wastewater port 13. In this embodiment, there are two nozzles 3, which are respectively located on both sides of the filter element 2. The connecting pipe 30 is a curved pipe and extends along the circumference of the filter element 2. The two ends of the connecting pipe 30 are respectively connected to the bottom ends of the two nozzles 3. The top end of one nozzle 3 is bent outward and extends to communicate with the above-mentioned cleaning port 14, and the top end of the other nozzle 3 is exposed in the interlayer 10 and is connected to the above-mentioned wastewater port 13 through the interlayer 10.

[0044] The annular float 4 is located in the interlayer 10 and is arranged around the outer periphery of the filter element 2. The annular float 4 is hollow inside, and a plurality of second spray holes 41 arranged at intervals along the circumference thereof are provided on the inner circumferential wall thereof, and a plurality of third spray holes 42 arranged at intervals along the circumference thereof are provided on the top wall thereof; the annular float 4 has lugs 40 corresponding to the nozzle 3, and each lug 40 can be slidably sleeved on the outer periphery of the corresponding nozzle 3 up and down. In this embodiment, the annular float 4 is made of a light material (such as foamed PP, etc.), and its density is less than that of water, so it can float in a static fluid; the second spray holes 41 are arranged obliquely upward, and the oblique holes have a certain taper, which can accelerate the water flow and make the sprayed water flow more powerful. In addition, the water is sprayed obliquely upward, and while achieving the purpose of brushing, it pushes the annular float to move downward.

[0045] In addition, in order to ensure that the annular float 4 can always obtain water flow from the nozzle 3 to assist its movement during movement, the height of the inner cavity of the annular float 4 at the lug 40 is recorded as a, and the distance between two adjacent first spray holes 31 is recorded as b. The relationship between a and b satisfies: a>b.

[0046] The outlet end of the water inlet pipeline 5 is connected to the water inlet 11 .

[0047] The outlet end of the cleaning pipeline 6 is connected to the cleaning port 14. In this embodiment, the water inlet pipeline 5 and the cleaning pipeline 6 share the same water inlet section, and a water inlet pump 51 is installed on the water inlet section.

[0048] The inlet end of the purified water pipeline 7 is connected to the purified water port 12 .

[0049] The inlet end of the wastewater pipeline 8 is connected to the wastewater outlet 13. In this embodiment, a drain valve 81 is installed on the wastewater pipeline 8.

[0050] The three-way valve 9 has an inlet end, a first water outlet end and a second water outlet end. The inlet end of the three-way valve 9 is connected to the inlet section shared by the water inlet pipeline 5 and the cleaning pipeline 6, the first water outlet end of the three-way valve 9 is connected to the outlet section of the water inlet pipeline 5, and the second water outlet end of the three-way valve 9 is connected to the outlet section of the cleaning pipeline 6.

[0051] By adjusting the three-way valve 9, the filter element cleaning structure has at least two states:

[0052] In the first state, the water inlet pipe 5 is connected and the cleaning pipe 6 is blocked;

[0053] In the second state, the cleaning pipeline 6 is connected and the water inlet pipeline 5 is blocked.

[0054] The working principle of this embodiment is as follows:

[0055] (1) In the water purification mode, the filter element cleaning structure is switched to the first state through the three-way valve 9, the water inlet pipeline 5 is connected, and the cleaning pipeline 6 is blocked. Under the action of the water inlet pump 51, the tap water enters the interlayer 10 through the water inlet 11 through the water inlet pipeline 5, and the clean water filtered by the filter element 2 is discharged through the clean water outlet 12 and the clean water pipeline 7, and the residual waste water is discharged through the waste water outlet 13 and the waste water pipeline 8;

[0056] (2) In the cleaning mode, the filter element cleaning structure is switched to the second state through the three-way valve, the cleaning pipeline 6 is connected, and the water inlet pipeline 5 is blocked. Under the action of the water inlet pump 51, the tap water enters the nozzle 3 through the cleaning pipeline 6 through the cleaning port 14. Subsequently, part of the cleaning water is sprayed toward the filter element 2 through the first spray hole 31 to flush the stains on the surface of the filter element 2. Part of the cleaning water enters the inside of the annular float 4 through the first spray hole 31, and then is sprayed toward the filter element 2 through the second spray hole 41. During this process, the annular float 4 will float up as the water level rises, thereby diffusing the cleaning water flow to the surrounding of the entire filter element 2 to ensure the cleaning and flushing effect. Finally, the drain valve 81 is opened, and the waste water is discharged through the waste water port 13 through the waste water pipeline 8. At the same time, the cleaning water is sprayed vertically upward through the third spray hole 42, pushing the annular float 4 to move downward and reset.

[0057] The "fluid communication" referred to in the present invention refers to the spatial position relationship between two parts or parts (hereinafter collectively referred to as the first part and the second part), that is, the fluid (gas, liquid or a mixture of the two) can flow from the first part along the flow path or / and be transported to the second part. The first part and the second part can be directly connected, or the first part and the second part can be indirectly connected through at least one third party. The third party can be a fluid channel such as a pipe, channel, duct, guide member, hole, groove, etc., or it can be a chamber allowing fluid to flow through, or a combination of the above.

Claims

1. A filter element cleaning structure, comprising: The housing (1) is cylindrical and has a water inlet (11), a clean water outlet (12) and a waste water outlet (13); and A filter element (2) is arranged in the housing (1) along the axial direction, and an interlayer (10) is formed between the outer wall of the filter element (2) and the inner wall of the housing (1); Features: The interlayer (10) is provided with at least two nozzles (3) arranged at intervals along the circumference of the filter element (2), each of the nozzles (3) extends along the axial direction of the filter element (2), and the nozzle (3) is provided with at least two first spray holes (31) arranged at intervals along its length direction, the first spray holes (31) face the filter element (2), and the water outlet end of the first nozzle (3) is connected to the water inlet end of the second nozzle (3) through a connecting pipe (30).

2. The filter element cleaning structure according to claim 1, characterized in that: The interlayer (10) is provided with an annular float (4) with a hollow interior, the annular float (4) is arranged around the outer periphery of the filter element (2), and the inner peripheral wall thereof is provided with at least two second spray holes (41) arranged at intervals along the circumference thereof; The annular float (4) is provided with lugs (40) corresponding to the nozzle (3), and each lug (40) can be slidably sleeved on the outer periphery of the corresponding nozzle (3) up and down.

3. The filter element cleaning structure according to claim 2, characterized in that: The nozzle (3) is arranged vertically, and the second nozzle hole (41) is arranged obliquely upward.

4. The filter element cleaning structure according to claim 2, characterized in that: The top wall of the annular float (4) is provided with at least two third spray holes (42) which are arranged at intervals along its circumference.

5. The filter element cleaning structure according to claim 2, characterized in that: The height of the inner cavity of the annular float (4) at the lug (40) is recorded as a, and the distance between two adjacent first spray holes (31) is recorded as b. The relationship between a and b satisfies: a>b.

6. The filter element cleaning structure according to any one of claims 1 to 5, characterized in that: The shell (1) is provided with a cleaning port (14), the water inlet end of the nozzle (3) located at the front is fluidically connected to the cleaning port (14), and the water outlet end of the nozzle (3) located at the rear is fluidically connected to the wastewater port (13).

7. The filter element cleaning structure according to claim 6, characterized in that: There are two nozzles (3), which are respectively located on both sides of the filter element (2); the connecting pipe (30) is a curved pipe and extends along the circumference of the filter element (2); the two ends of the connecting pipe (30) are respectively connected to the bottom ends of the two nozzles (3).

8. The filter element cleaning structure according to claim 6, characterized in that: Also includes A water inlet pipeline (5), the outlet end of which is connected to the water inlet (11); A cleaning pipeline (6), the outlet end of which is connected to the cleaning port (14); A clean water pipeline (7), the inlet end of which is connected to the clean water outlet (12); and A wastewater pipeline (8), the inlet end of which is connected to the wastewater outlet (13); The water inlet pipeline (5) and the cleaning pipeline (6) are both provided with valves, so that the filter element cleaning structure has at least two states: In the first state, the water inlet pipeline (5) is connected and the cleaning pipeline (6) is blocked; In the second state, the cleaning pipeline (6) is connected and the water inlet pipeline (5) is blocked.

9. The filter element cleaning structure according to claim 8, characterized in that: The water inlet pipeline (5) and the cleaning pipeline (6) share the same water inlet section and a three-way valve (9); the three-way valve (9) has a water inlet end, a first water outlet end and a second water outlet end; the water inlet end of the three-way valve (9) is connected to the water inlet section shared by the water inlet pipeline (5) and the cleaning pipeline (6); the first water outlet end of the three-way valve (9) is connected to the water outlet section of the water inlet pipeline (5); and the second water outlet end of the three-way valve (9) is connected to the water outlet section of the cleaning pipeline (6).

10. A water purifier using the filter element cleaning structure according to any one of claims 1 to 9.

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