Composite filter element and water purification equipment

Abstract

The utility model relates to the field of water quality purification, in particular to a composite filter element, and particularly relates to water purification equipment. A housing is included; the shell comprises a bottle body and a first cover body; the first cover body is fixedly connected to the top of the bottle body; the filter further comprises a first filter element, a second filter element and a central pipe; the central tube is fixedly connected to the interior of the bottle body; a second cover body is arranged on the central pipe; a water inlet pipe and a water outlet pipe are arranged at the top of the second cover body; the second filter element is arranged in the central pipe; the first filter element is arranged outside the central pipe; the water inlet pipe is connected with the second filter element; the first filter element is connected with the water outlet pipe; the water inlet pipe, the second filter element, the first filter element and the water outlet pipe are sequentially communicated. A plurality of filter elements are compounded into a single filter element; the volume of the single composite filter element is smaller than the total volume of the water purification equipment required to be occupied by a plurality of filter elements; and the volume of the water purification equipment can be greatly reduced. Liquid in the filter element is prevented from flowing back during replacement or maintenance through the one-way valve.

Description

TECHNICAL FIELD

[0001] The utility model relates to water quality purification field, concretely relates to a kind of filter element, especially a kind of water purification equipment. BACKGROUND

[0002] In prior art, water purification equipment mostly uses multiple filter elements to process; commercially available water purification equipment mostly uses cotton filter element, mineral / activated carbon filter element, carbon rod filter element and reverse osmosis filter element to process sequentially. This not only wastes a lot of space in filter element; but also greatly expands the volume of the whole water purification equipment. Only water purification equipment is difficult to install in actual use. SUMMARY

[0003] The utility model provides a kind of composite filter element, it is to solve the technical problem that filter element function is single in prior art, a lot of structure inner space is wasted;Meanwhile, the utility model provides a kind of book equipment, it is to solve the technical problem that water purification equipment is larger in prior art.

[0004] The utility model provides a kind of composite filter element, including shell;The shell includes bottle body and first cover body;The first cover body is fixedly connected at bottle body top;Its characterized in that, still include first filter element, second filter element and center tube;The center tube is fixedly connected in bottle body interior;Second cover body is equipped on the center tube;The second cover body top is equipped with water inlet pipe, outlet pipe;Second filter element is set in the center tube;First filter element is set in the center tube outside;Water inlet pipe is connected with second filter element;First filter element is connected with outlet pipe;Water inlet pipe, second filter element, first filter element and outlet pipe are sequentially communicated.

[0005] Further, the bottom of the center tube is provided with a water passing groove;The water passing groove is communicated with the first filter element and the second filter element;The bottom of the bottle body is provided with a second limiting groove;The water passing groove is embedded in the second limiting groove;The center tube and the bottle body are connected through the second limiting groove.

[0006] Further, the first filter element is communicated with the outlet pipe;There is a first gap between the first filter element and the bottle body;The first gap is communicated with the water passing groove;There is a second gap between the first filter element and the center tube;The second gap is communicated with the outlet pipe and the first filter element;

[0007] Further, a plurality of penetrating grooves are arranged on the inner wall of the center tube in a ring shape along the axial direction;The penetrating grooves are communicated with the second filter element and the water passing groove.

[0008] Further, a plurality of waste water pipes are arranged between the first cover body and the second cover body;The first filter element is a reverse osmosis filter element;Each waste water pipe is connected with the first filter element.

[0009] Further, the water inlet pipe is connected with a first micro check valve; the water outlet pipe is connected with a second micro check valve; and the waste water pipe is connected with a third micro check valve.

[0010] Further, the second cover lower surface and the base upper surface are provided with a fourth limiting groove; a third filter core is arranged in the bottle body; and the third filter core is arranged in the fourth limiting groove.

[0011] Further, the first gap is communicated with a fourth micro check valve outside the bottle body.

[0012] The utility model provides a kind of water purification equipment, uses above-mentioned composite filter element.

[0013] The beneficial effects of the present application are as follows:

[0014] The utility model provides a kind of composite filter element, by multiple filter elements are compounded into single filter element;The volume of single composite filter element is less than the volume of multiple filter elements required to occupy in water purification equipment;Further, the volume of water purification equipment can be greatly reduced.

[0015] The utility model provides a kind of composite filter element, by check valve prevents liquid in filter element backflow when replacing or maintaining.

[0016] The utility model provides a kind of composite filter element, by check valve air supplement, when needing to pull out filter element, it is ensured that filter element can be installed and pulled out, to avoid damaging water purification equipment.

[0017] The utility model provides a kind of composite filter element, a carbon rod is further arranged in the center tube, further purifies liquid flowing through filter element, and additional installation space is not required.

[0018] The utility model also provides a kind of water purification equipment, by built-in composite filter element, the occupied space is greatly reduced. DETAILED DESCRIPTION

[0019] Figure 1 It is the structure schematic view of embodiment 1 of a kind of composite filter element of the utility model;

[0020] Figure 2 It is the structure schematic view of water passage of embodiment 1 of a kind of composite filter element of the utility model;

[0021] Figure 3 It is the structure schematic view of center tube of embodiment 1 of a kind of composite filter element of the utility model;

[0022] Figure 4 It is the center tube sectional view of embodiment 1 of a kind of composite filter element of the utility model;

[0023] Figure 5A center tube structure schematic view of embodiment 2 of the composite filter element of the utility model;

[0024] Figure 6 A structure schematic view of embodiment 3 of the composite filter element of the utility model;

[0025] Wherein, 1 - shell, 11 - bottle body, 111 - second limit slot, 12 - first cover, 121 - first limit slot, 13 - fourth micro check valve flow, 2 - first filter element, 21 - waste water pipe, 211 - third micro check valve, 3 - second filter element, 31 - base, 32 - third limit slot, 33 - fourth limit slot;4 - center tube, 41 - second cover, 42 - tube body, 43 - permeation groove, 44 - water passage, 45 - water inlet pipe, 451 - first micro check valve, 46 - water outlet pipe, 461 - second micro check valve, 5 - third filter element. Specific implementation

[0026] Embodiment 1:

[0027] Referring to Figure 1 , the embodiment provides a composite filter element, which comprises a shell 1, a first filter element 2, a second filter element 3 and a center tube 4;The shell 1 comprises a bottle body 11 and a first cover 12;The first cover 12 is provided with a first limit slot 121;The first limit slot 121 is embedded with the top of the bottle body 11;The bottom of the bottle body 11 is provided with a second limit slot 111;The bottom of the center tube 4 is embedded with the second limit slot 111;

[0028] Referring to Figure 2 And Figure 3 , the center tube 4 comprises a second cover 41, a tube body 42, a permeation groove 43, a water passage 44, a water inlet pipe 45 and a water outlet pipe 46;The second cover 41 is installed on the top of the tube body 42;The water inlet pipe 45 and the water outlet pipe 46 are arranged on the top of the second cover 41;10 permeation grooves 43 are axially arranged on the inner wall of the tube body 42;The first filter element 2 is arranged outside the tube body 42;A second gap is arranged between the first filter element 2 and the tube body 42, and the second gap is communicated with the water outlet pipe 46;There is a first gap between the first filter element 2 and the inner wall of the bottle body 11;The second filter element 3 is arranged on the inner surface of the tube body 42;The second filter element 3 is communicated with the permeation groove 43;The bottom of the second filter element 3 is provided with a base 31;The base 31 is provided with a third limit slot 32 embedded with the second filter element 3;The water passage 44 is arranged at the bottom of the tube body 42;The water passage 44 is communicated with the first gap;The water passage 44 is communicated with each permeation groove 43;The bottom of the water passage 44 is embedded in the second limit slot 111;The first filter element 2 is a reverse osmosis filter element;The first filter element 2 is communicated with a waste water pipe 21;The second filter element 3 is an activated carbon filter element.

[0029] The first micro one-way valve 451 is arranged in the water inlet pipe 45; the second micro one-way valve 461 is arranged in the water outlet pipe 46; and the third micro one-way valve 211 is arranged in the waste water pipe 21. The flow direction of the first micro one-way valve 451 is towards the filter core. The flow directions of the second micro one-way valve 461 and the third micro one-way valve 211 are both towards the outside of the filter core.

[0030] The embodiment provides a water purification device comprising the composite filter core.

[0031] The working process of the embodiment is as follows:

[0032] The water purification process is as follows: the first micro one-way valve 451 is open, and the un-purified water enters the second filter core 3 from the water inlet pipe 45 and is purified to become purified water; the purified water flows into the first gap from the permeation tank 43 through the water tank 44; the purified water enters the first filter core 2 from the first gap to become pure water; the second micro one-way valve 461 is open, and the pure water flows out from the water outlet pipe 46; and the third micro one-way valve 211 is closed.

[0033] The second filter core purification process is as follows: the first micro one-way valve 451 and the third micro one-way valve 211 are open, the second micro one-way valve 461 is closed, the purified water enters the second filter core 3 and flows out from the waste water pipe 21.

[0034] Embodiment 2

[0035] The embodiment provides a composite filter core, and the difference between the embodiment and the embodiment 1 is that the second cover body 41 and the base 31 are provided with a fourth limiting groove 33; the central pipe 4 is provided with a third filter core 5; the third filter core 5 is arranged in the fourth limiting groove 33; and the third filter core 5 is a carbon rod.

[0036] The embodiment provides a water purification device comprising the composite filter core.

[0037] The working process of the embodiment is as follows:

[0038] The difference between the embodiment and the embodiment 1 is that the un-purified water contacts the third filter core 5 before entering the first filter core 2, and is purified by the carbon rod for the first time.

[0039] Embodiment 3

[0040] The embodiment provides a composite filter core, and the difference between the embodiment and the embodiment 1 is that the fourth micro one-way valve 13 is arranged in the fourth micro one-way valve 13 which is in communication with the bottle body (11); and the flow direction of the fourth micro one-way valve 13 is from the outside to the water outlet pipe 45.

[0041] The embodiment provides a water purification device comprising the composite filter core.

[0042] The working process of the embodiment is as follows:

[0043] When the composite filter needs to be pulled out, the fourth micro check valve (13) will cause the external gas to enter the first gap due to the difference in pulling force caused by pulling, preventing the internal and external pressure difference from causing the filter to be unable to be pulled out.

Claims

1. A composite filter element comprising a housing (1); the housing (1) comprising a bottle body (11) and a first cover (12); the first cover (12) being fixedly connected to the top of the bottle body (11); characterized in that, It also includes a first filter element (2), a second filter element (3) and a center tube (4); the center tube (4) is fixedly connected to the inside of the bottle body (11); the center tube (4) is provided with a second cover (41); the top of the second cover (41) is provided with a water inlet pipe (45) and a water outlet pipe (46); the second filter element (3) is arranged in the center tube (4); the first filter element (2) is arranged outside the center tube (4); the water inlet pipe (45) is connected with the second filter element (3); the first filter element (2) is connected with the water outlet pipe (46); the water inlet pipe (45), the second filter element (3), the first filter element (2) and the water outlet pipe (46) are sequentially communicated.

2. The composite filter element of claim 1, wherein The bottom of the center tube (4) is provided with a water passing groove (44); the water passing groove (44) communicates the first filter element (2) and the second filter element (3); the bottom of the bottle body (11) is provided with a second limiting groove (111); the water passing groove (44) is embedded in the second limiting groove (111); the center tube (4) and the bottle body (11) are connected through the second limiting groove (111).

3. The composite filter element of claim 2, wherein, The first filter element (2) communicates with the water outlet pipe (46); there is a first gap between the first filter element (2) and the bottle body (11); the first gap communicates with the water passing groove (44); there is a second gap between the first filter element (2) and the center tube; the second gap communicates with the water outlet pipe and the first filter element.

4. The composite filter element of claim 2 wherein, The inner wall of the center tube (4) is axially provided with a plurality of penetration grooves (43) in a ring-like array; the penetration grooves (43) communicate the second filter element (3) and the water passing groove (44).

5. The composite filter element of claim 1 wherein, A plurality of waste water pipes (21) are arranged between the first cover (12) and the second cover (41); the first filter element (2) is a reverse osmosis filter element; each waste water pipe (21) is connected with the first filter element (2).

6. The composite filter element of claim 5 wherein, The water inlet pipe (45) is connected with a first micro check valve (451); the water outlet pipe (46) is connected with a second micro check valve (461); the waste water pipe (21) is connected with a third micro check valve (211).

7. The composite filter element of claim 1 wherein, The lower surface of the second cover (41) and the upper surface of the base (31) are provided with a fourth limiting groove (33); a third filter element (5) is arranged in the bottle body (11); the third filter element (5) is arranged in the fourth limiting groove (33).

8. The composite filter element of claim 3 wherein, The fourth micro check valve (13) is arranged outside the bottle body (11) and communicates with the first gap.

9. A water purification apparatus characterized by comprising: Use the composite filter element according to any one of claims 1 to 8.

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