CN220779206U - A filter device with self-cleaning filter element and a water purifier - Google Patents

Abstract

The utility model discloses a filter device with a self-cleaning filter element, comprising: a raw water inlet pipe, a first filter structure with a first filter element, a clean water outlet pipe, a clean water inlet pipe, a second filter structure with a second filter element, and a first water pump; the raw water inlet pipe, the first filter structure, and the clean water outlet pipe are connected in sequence; and the clean water inlet pipe and the second filter structure are connected in sequence. The first filter element separates the first filter structure into a raw water filter chamber and a clean water accommodating chamber. The second filter element separates the second filter structure into an impurity retention chamber and a clean water accommodating chamber. The raw water filter chamber is connected to the impurity retention chamber through a first pipe. The clean water accommodating chamber is connected to the clean water accommodating chamber through a second pipe. The first water pump is used to drive the water in the raw water filter chamber into the impurity retention chamber. The filter device with a self-cleaning filter element adopts the above filter element, and its filter element does not need to be frequently replaced, thereby reducing the use cost of the water purifier. The utility model also discloses a water purifier.

Description

A filter device with self-cleaning filter element and a water purifier

Technical Field

The utility model relates to the technical field of water dispensers, in particular to a filtering device with a self-cleaning filter element and a water purifier.

Background technique

Drinking water purifiers rely on their excellent filtering system to provide drinking water directly. However, they have an obvious disadvantage: after the filter element has been filtering impurities for a long time, its filtering function will decline, so the filter element needs to be replaced frequently, which increases the cost of using the drinking water purifier.

Utility Model Content

In order to overcome at least one of the defects of the prior art described above, the utility model provides a filtering device with a self-cleaning filter element, wherein the filter element does not need to be replaced regularly, thereby reducing the use cost of the water purifier.

In order to overcome at least one defect of the above-mentioned prior art, the utility model provides a water purifier, which adopts the above-mentioned filter element self-cleaning filtering device, and its filter element does not need to be replaced frequently, thereby reducing the use cost of the water purifier.

The technical solution adopted by the utility model to solve one of the problems is:

A filter device with a self-cleaning filter element, comprising: a raw water inlet pipe, a first filter structure with a first filter element, a clean water outlet pipe, a clean water inlet pipe, a second filter structure with a second filter element, and a first water pump;

The raw water inlet pipe, the first filtering structure, and the purified water outlet pipe are connected in sequence;

The clean water inlet pipe and the second filtering structure are connected in sequence;

The first filter element divides the first filter structure into a raw water filter chamber and a purified water accommodating chamber;

The second filter element divides the second filter structure into an impurity retention chamber and a clean water accommodating chamber;

The raw water filtering chamber is connected to the impurity retention chamber via a first pipe;

The purified water accommodating chamber is connected to the clean water accommodating chamber via a second pipe;

The first water pump is used to drive the water in the raw water filter chamber into the impurity retention chamber.

Furthermore, the first pipeline is connected to a first one-way valve, and the first one-way valve is used to allow the water in the raw water filter chamber to flow to the impurity retention chamber.

Furthermore, the first pipeline is also connected to a first on-off control valve.

Furthermore, the second pipeline is connected to a second one-way valve, and the second one-way valve is used to allow water in the clean water accommodating chamber to flow to the purified water accommodating chamber.

Furthermore, the first water pump is connected to the second pipeline.

Furthermore, the cleaning water inlet pipe is connected to a second water pump.

Furthermore, the filter element self-cleaning filtering device also includes a drain pipe, which is connected to the impurity retention chamber; and the drain pipe is connected to a third water pump.

Furthermore, the filter element self-cleaning filtering device also includes a raw water main pipe, and the raw water inlet pipe and the clean water inlet pipe are both connected to the raw water main pipe.

Furthermore, the filter element self-cleaning filtering device also includes a backwashing water tank, the clean water outlet pipe is connected to the backwashing water tank, and the backwashing water tank is connected to the clean water containing chamber through the backwashing pipe; the clean water outlet pipe is connected to a fourth water pump.

The technical solution adopted by the utility model to solve the second problem is:

A water purifier comprises the aforementioned filter element self-cleaning filter device.

In summary, the filter element self-cleaning filter device provided by the utility model has the following technical effects:

1) By adding a second filtering structure, the raw water filtering chamber is connected to the impurity retention chamber through a first pipe, and the purified water containing chamber is connected to the clean water containing chamber through a second pipe; thus, when cleaning, the impurities remaining on the first filter element can be flushed back into the impurity retention chamber by providing power through the first water pump, thereby achieving the purpose of cleaning the first filter element and reducing the use cost.

2) Moreover, when the second filter element is also slightly clogged, it is not necessary to replace the second filter element. The second filter element only needs to be replaced when the second filter element basically loses its filtering function, thereby reducing the cost of use.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a filter device with a self-cleaning filter element according to a first embodiment of the utility model;

FIG. 2 is a filter device with a self-cleaning filter element according to a second embodiment of the present invention.

The meanings of the reference numerals are as follows:

1. Raw water inlet pipe; 2. First filter element; 3. First filter structure; 4. Clean water outlet pipe; 5. Clean water inlet pipe; 6. Second filter element; 7. Second filter structure; 8. First water pump; 9. Raw water filter chamber; 10. Clean water storage chamber; 11. Impurity retention chamber; 12. Clean water storage chamber; 13. First pipeline; 14. Second pipeline; 15. First non-return valve; 16. First on-off control valve; 17. Second non-return valve; 18. Second water pump; 19. Drain pipe; 20. Third water pump; 21. Raw water main pipe; 22. Backwash water storage tank; 23. Backwash pipe; 24. Fourth water pump; 25. Second on-off control valve.

Detailed ways

For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

First embodiment:

Referring to Figure 1, a filter device with self-cleaning filter element in this embodiment includes: a raw water inlet pipe 1, a first filter structure 3 with a first filter element 2, a clean water outlet pipe 4, a clean water inlet pipe 5, a second filter structure 7 with a second filter element 6, and a first water pump 8.

The raw water inlet pipe 1 , the first filtering structure 3 , and the purified water outlet pipe 4 are connected in sequence, so that in normal use, water passes through the raw water inlet pipe 1 , the first filtering structure 3 , and the purified water outlet pipe 4 in sequence.

The clean water inlet pipe 5 and the second filter structure 7 are connected in sequence. When cleaning, the clean water inlet pipe 5 is used to input clean water into the second filter structure 7.

The first filter element 2 divides the first filter structure 3 into a raw water filter chamber 9 and a clean water accommodating chamber 10 .

The second filter element 6 divides the second filter structure 7 into an impurity retention chamber 11 and a clean water accommodating chamber 12 .

The raw water filtering chamber 9 is connected to the impurity retention chamber 11 via a first pipe 13 .

The purified water accommodating chamber 10 is connected to the clean water accommodating chamber 12 via a second pipe 14 .

The first water pump 8 is used to drive the water in the raw water filtering chamber 9 into the impurity retention chamber 11 .

During normal water use, the water flows in the following direction: raw water inlet pipe 1 → first filter structure 3 (filtered by first filter element 2) → purified water outlet pipe 4. The purified water outlet pipe 4 is connected to the faucet for direct drinking.

When the first filter element 2 is clogged by a large amount of impurities, the impurities accumulate in the raw water filter chamber 9. During cleaning, the first water pump 8 provides power so that the water flows in the following directions: clean water accommodating chamber 12 → second pipe 14 → clean water accommodating chamber 10 → first filter element 2 → raw water filter chamber 9 → first pipe 13 → impurity retention chamber 11 → clean water accommodating chamber 12. After multiple cycles, the impurities in the raw water filter chamber 9 are transferred to the impurity retention chamber 11. In this way, the filtering function of the first filter element 2 is basically restored, so that the impurities in the water can continue to be filtered at a large flow rate (i.e., efficiently).

Among them, in this embodiment, the raw water filter chamber 9 and the clean water containing chamber 10 are respectively located on the opposite sides of the first filter element 2; and in an alternative arrangement, the raw water filter chamber 9 can be surrounded by the clean water containing chamber 10; or, the clean water containing chamber 10 can be surrounded by the raw water filter chamber 9.

In this embodiment, the impurity retention chamber 11 and the clean water containing chamber 12 are respectively located on opposite sides of the second filter element 6; in an alternative arrangement, the impurity retention chamber 11 can be surrounded by the clean water containing chamber 12; or, the clean water containing chamber 12 can be surrounded by the impurity retention chamber 11.

Obviously, by adding a second filtering structure 7, and connecting the raw water filter chamber 9 with the impurity retention chamber 11 through the first pipe 13, and connecting the clean water accommodating chamber 10 with the clean water accommodating chamber 12 through the second pipe 14; in this way, when cleaning, the impurities remaining on the first filter element 2 can be reversely flushed into the impurity retention chamber 11 through the power provided by the first water pump 8, thereby achieving the purpose of cleaning the first filter element 2 and reducing the cost of use. Moreover, when the second filter element 6 is also slightly blocked, it is not necessary to replace the second filter element 6 until the second filter element 6 basically loses its filtering function, and then the second filter element 6 needs to be replaced, thereby reducing the cost of use. It should also be noted that the blockage of the first filter element 2 will directly affect the user's water use efficiency, while the blockage of the second filter element 6 only affects the cleaning efficiency.

In this embodiment, preferably, the first pipeline 13 is connected to a first one-way valve 15, and the first one-way valve 15 is used to allow water in the raw water filter chamber 9 to flow to the impurity retention chamber 11. In this way, the first one-way valve 15 can prevent impurities in the impurity retention chamber 11 from flowing back to the raw water filter chamber 9, so as to prevent the first filter element 2 from being blocked by impurities from the impurity retention chamber 11.

In this embodiment, preferably, the first pipe 13 is also connected to a first on-off control valve 16. In this way, when water is used normally, the water flows in the following direction: raw water inlet pipe 1 → first filter structure 3 (filtered by first filter element 2) → clean water outlet pipe 4. In this way, when water is used normally, raw water will not flow along the first pipe 13, so as to improve the stability of the user's control over the water flow.

In this embodiment, preferably, the second pipe 14 is connected to a second one-way valve 17, and the second one-way valve 17 is used to allow the water in the clean water accommodating chamber 12 to flow to the purified water accommodating chamber 10. In this way, the direct drinking water that has been purified by the first filter element 2 and is located in the purified water accommodating chamber 10 will not flow to the clean water accommodating chamber 12, so as to ensure the cleanliness of the direct drinking water.

In this embodiment, preferably, the first water pump 8 is connected to the second pipe 14. It should be noted that the direct function of the first water pump 8 is to force the water in the clean water accommodating chamber 10 to flow to the raw water filter chamber 9, thereby backwashing the first filter element 2, so connecting the first water pump 8 to the second pipe 14 can reduce the loss of its effectiveness. It can be understood that, as an alternative arrangement, the first water pump 8 can be connected to the first pipe 13; or be arranged in the first filter structure 3, or be arranged in the second filter structure 7.

In this embodiment, preferably, the cleaning water inlet pipe 5 is connected to a second water pump 18. In this way, during cleaning, raw water can be pumped by the second water pump 18 so that a sufficient amount of raw water can be pumped into the second filter structure 7.

In this embodiment, preferably, in order to facilitate the discharge of dirty water, a filter element self-cleaning filter device further includes a drain pipe 19 , which is connected to the impurity retention chamber 11 ; the drain pipe 19 is connected to a third water pump 20 .

In this embodiment, preferably, a filter element self-cleaning filter device further comprises a raw water main pipe 21, and the raw water inlet pipe 1 and the clean water inlet pipe 5 are both connected to the raw water main pipe 21. In this way, a filter element self-cleaning filter device in this embodiment only needs to complete the connection between the raw water main pipe 21 and the external water source.

In this embodiment, preferably, the clean water outlet pipe 4 is connected to a second on-off control valve 25. In this way, during cleaning, the water in the clean water outlet pipe 4 can be prevented from being reversely sucked into the first filter structure 3; and the water outlet connector of the clean water outlet pipe 4 can also be prevented from being damaged by negative pressure suction.

The first on-off control valve 16 can be a manual control valve such as a ball valve, or an electric control valve such as a solenoid valve. Similarly, the second on-off control valve 25 can be a manual control valve such as a ball valve, or an electric control valve such as a solenoid valve.

The utility model also discloses a water purifier, comprising the filter device with self-cleaning filter element.

Second embodiment:

Referring to Fig. 2, the second embodiment of the utility model includes the first embodiment, which is different from the first embodiment in that: a filter element self-cleaning filtering device also includes a backwashing water tank 22, the clean water outlet pipe 4 is connected to the backwashing water tank 22, and the backwashing water tank 22 is connected to the clean water accommodating chamber 12 through the backwashing pipe 23; the clean water outlet pipe 4 is connected to the fourth water pump 24. In this way, when the second filter element 6 is seriously blocked, the water in the backwashing water tank 22 can be pumped into the clean water accommodating chamber 12 by the fourth water pump 24, and then reversely passes through the second filter element 6 to discharge the impurities in the impurity retention chamber 11 along the drain pipe 19. In this way, the second filter element 6 can also be cleaned by backwashing, so that the second filter element 6 does not need to be replaced frequently, so as to further reduce the use cost.

For those skilled in the art, various other corresponding changes and deformations can be made according to the technical solutions and concepts described above, and all of these changes and deformations should fall within the protection scope of the claims of the utility model.

Claims (10)

1. A filter device with a self-cleaning filter element, characterized in that it comprises: a raw water inlet pipe (1), a first filter structure (3) having a first filter element (2), a clean water outlet pipe (4), a clean water inlet pipe (5), a second filter structure (7) having a second filter element (6), and a first water pump (8); The raw water inlet pipe (1), the first filtering structure (3), and the purified water outlet pipe (4) are connected in sequence; The clean water inlet pipe (5) and the second filtering structure (7) are connected in sequence; The first filter element (2) divides the first filter structure (3) into a raw water filter chamber (9) and a clean water storage chamber (10); The second filter element (6) divides the second filter structure (7) into an impurity retention chamber (11) and a clean water accommodating chamber (12); The raw water filtering chamber (9) is connected to the impurity retention chamber (11) via a first pipe (13); The purified water accommodating chamber (10) is connected to the clean water accommodating chamber (12) via a second pipe (14); The first water pump (8) is used to drive the water in the raw water filter chamber (9) into the impurity retention chamber (11). 2. A filter element self-cleaning filter device according to claim 1, characterized in that the first pipe (13) is connected to a first one-way valve (15), and the first one-way valve (15) is used to allow water in the raw water filter chamber (9) to flow to the impurity retention chamber (11). 3. A filter element self-cleaning filter device according to claim 2, characterized in that the first pipeline (13) is also connected to a first on-off control valve (16). 4. A filter device with a self-cleaning filter element according to claim 1, characterized in that the second pipe (14) is connected to a second one-way valve (17), and the second one-way valve (17) is used to allow water in the clean water accommodating chamber (12) to flow to the purified water accommodating chamber (10). 5. A filter element self-cleaning filter device according to claim 1, characterized in that the first water pump (8) is connected to the second pipeline (14). 6. A filter device with a self-cleaning filter element according to claim 1, characterized in that the cleaning water inlet pipe (5) is connected to a second water pump (18). 7. A filter element self-cleaning filter device according to claim 1, characterized in that the filter element self-cleaning filter device also includes a drain pipe (19), the drain pipe (19) is connected to the impurity retention chamber (11); the drain pipe (19) is connected to a third water pump (20). 8. A filter device with a self-cleaning filter element according to claim 1, characterized in that the filter device with a self-cleaning filter element also includes a raw water main pipe (21), and the raw water inlet pipe (1) and the clean water inlet pipe (5) are both connected to the raw water main pipe (21). 9. A filter device with a self-cleaning filter element according to claim 1, characterized in that the filter device with a self-cleaning filter element also includes a backwashing water tank (22), the clean water outlet pipe (4) is connected to the backwashing water tank (22), and the backwashing water tank (22) is connected to the clean water containing chamber (12) through a backwashing pipe (23); the clean water outlet pipe (4) is connected to a fourth water pump (24). 10. A water purifier, characterized by comprising a filter device with a self-cleaning filter element as claimed in any one of claims 1 to 9.