CN212188049U - Composite filter element and water purifier - Google Patents

Abstract

The utility model relates to a composite filter element and purifier. The composite filter element includes: the filter comprises a shell, a first filter element arranged in the shell, and a second filter element and a third filter element arranged in the first filter element; a first water flowing channel communicated with the filtering channel of the first filter element is formed between the first filter element and the shell in an enclosing manner, a second water flowing channel communicated with the filtering channel of the third filter element is arranged in the third filter element, the first water flowing channel is a raw water channel, and the second water flowing channel is a pure water channel; the filtering channel of the second filter element is communicated between the filtering channel of the first filter element and the filtering channel of the third filter element. First filter core, the integrated setting of second filter core and third filter core are in same shell, and the filtration passageway of these three filter cores communicates in proper order, can satisfy the multiple-stage filtration demand of purifier, can also reduce the number of the filter core of purifier simultaneously, reduces the inner space of purifier, reduces the whole volume of purifier, also can reduce the inside filter core interface figure of purifier, and then can reduce the risk of leaking.

Description

Composite filter element and water purifier

Technical Field

The utility model relates to an electrical apparatus technical field especially relates to a combined filter core and purifier.

Background

With the increasing attention on health concepts, people pay more attention to water safety, and therefore the water purifier is widely used. At present, in order to guarantee the filtering effect of a water purifier, a mode of connecting multiple stages of filter elements in series is generally adopted to gradually purify raw water. However, the above filter element combination mode not only causes the volume of the water purifier to be large, but also causes water leakage due to more interfaces.

SUMMERY OF THE UTILITY MODEL

Based on this, it is necessary to provide a composite filter element and a water purifier aiming at the problems that the water purifier is large in size and water leakage is easily caused by more interfaces in the filter element combination mode.

A composite filter element, comprising: the filter comprises a shell, a first filter element arranged in the shell, and a second filter element and a third filter element arranged in the first filter element;

a first flowing water channel communicated with the filtering channel of the first filter element is formed between the first filter element and the shell in a surrounding manner, and a second flowing water channel communicated with the filtering channel of the third filter element is arranged in the third filter element, wherein the first flowing water channel is a raw water channel and the second flowing water channel is a pure water channel, or the first flowing water channel is a pure water channel and the second flowing water channel is a raw water channel;

the filtering channel of the second filter element is communicated between the filtering channel of the first filter element and the filtering channel of the third filter element.

As above compound filter core, first filter core, second filter core and the integrated setting of third filter core are in same shell, and the filtration passageway of these three filter cores is relatively independent and communicate in proper order, can satisfy the multistage filtration demand of purifier, can also reduce the number of the filter core of purifier simultaneously, reduce the inner space of purifier, reduce the whole volume of purifier, also can reduce the inside filter core interface figure of purifier, and then can reduce the risk of leaking.

In one embodiment, the first water flowing channel is a raw water channel, and the second water flowing channel is a pure water channel;

the first filter core is the reverse osmosis filter core, the second filter core is the carbon-point filter core, the third filter core is the ultrafiltration membrane filter core.

In one embodiment, the first cartridge comprises: the first shell and a first inner core of which the upper end and the lower end are respectively connected with the first shell and the outer shell;

the first shell and the third filter element are matched and surrounded to form a waste water channel;

and a water passing cavity communicated with the filtering channel is arranged in the first inner core, and the top and the bottom of the water passing cavity are respectively communicated with the wastewater channel and the first flowing water channel.

In one embodiment, the first housing includes: an end cover and waterproof cloth;

the tarpaulin is connected between the end cover and the first inner core.

In one embodiment, a clamping boss is arranged on the bottom wall of the shell;

the clamping boss is clamped into the central hole of the first inner core.

In one embodiment, the lower end of the second filter element is sleeved in the central hole of the first inner core, and the upper end of the second filter element extends into the third filter element.

In one embodiment, the second filter element is provided with a water passing groove which is communicated with the central hole of the first inner core along the axial direction.

In one embodiment, a water gap is formed between the upper end of the second filter element and the side wall of the third filter element.

In one embodiment, the outer wall of the second filter element is provided with a limiting part, and the limiting part abuts against the inner wall of the third filter element.

In one embodiment, the third cartridge includes: a second shell and a second inner core;

the second shell is abutted against the top wall of the first inner core and matched with the first shell to form the waste water channel, the upper cavity of the second shell forms the second water flowing channel, and the upper ends of the second inner core and the second filter element are both arranged in the lower cavity of the second shell.

A water purifier, the water purifier comprising: a composite filter element according to any one of the preceding claims.

As above purifier, first filter core, second filter core and the integrated setting of third filter core are in same shell, and the filtration passageway of these three filter cores is relatively independent and communicate in proper order, can satisfy the multistage filtration demand of purifier, can also reduce the number of the filter core of purifier simultaneously, reduce the inner space of purifier, reduce the whole volume of purifier, also can reduce the inside filter core interface figure of purifier, and then can reduce the risk of leaking.

Drawings

Fig. 1 is a schematic structural view of a composite filter element according to an embodiment of the present invention;

fig. 2 is a schematic view of an internal water flow direction of the composite filter element according to an embodiment of the present invention.

Wherein the content of the first and second substances,

100-a housing;

110-clamping the boss;

120-a housing body;

130-a bottom cover;

200-a first filter element;

210-a first housing;

211-end cap;

212-tarpaulin;

220-a first inner core;

220 a-water passing cavity;

220 b-center hole;

300-a second filter element;

300 a-water passing tank;

300 b-a water gap;

310-a limiting part;

400-a third filter element;

410-a second housing;

420-a second inner core;

l1 — first flow channel;

l2-second flow channel;

l3-waste water channel.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1, fig. 1 shows a schematic structural diagram of a composite filter element in an embodiment of the present invention, an embodiment of the present invention provides a composite filter element, including: the filter comprises a shell 100, a first filter element 200 arranged in the shell 100, and a second filter element 300 and a third filter element 400 arranged in the first filter element 200; a first water flow channel L1 formed to be communicated with the filtering channel of the first filter element 200 is enclosed between the first filter element 200 and the housing 100, and a second water flow channel L2 communicated with the filtering channel of the second filter element 300 is provided in the second filter element, wherein the first water flow channel L1 is a raw water channel and the second water flow channel L2 is a pure water channel, or the first water flow channel L1 is a pure water channel and the second water flow channel L2 is a raw water channel; the filtering passage of the second filter element 300 is communicated between the filtering passage of the first filter element 200 and the filtering passage of the third filter element 400. It is understood that the filtering passages of the first, second and third cartridges 200, 300 and 400 are used to filter impurities, such as bacteria, inorganic substances, minerals, etc., in water.

It should be noted that, the embodiment of the utility model provides an in the composite filter element is applied to the purifier, can with the water route board intercommunication of purifier, wherein have on the water route board with the raw water passageway of outside water source intercommunication and with the pure water passageway of the pure water mouth intercommunication of purifier. In the following, taking the first flow passage L1 of the composite filter element as the raw water passage and the second flow passage L2 as the pure water passage as an example, how the composite filter element filters raw water step by step is described:

during the use, communicate the water route board of composite filter element and purifier earlier, specifically be: the first flow channel L1 of the composite filter element communicates with the raw water channel of the water channel plate and the second flow channel L2 communicates with the pure water channel of the water channel plate. Referring to fig. 2, fig. 2 shows a schematic view of an internal water flow direction of the composite filter element in an embodiment of the present invention, raw water flows into the first water flow channel L1 of the composite filter element through the raw water channel of the water channel plate, and is sequentially filtered step by step through the filtering channels of the first filter element 200, the second filter element 300, and the third filter element 400. The filtered raw water (i.e., pure water) flows into the pure water passage of the water passage plate through the second water passage L2 of the composite filter element.

As above described composite filter element, first filter element 200, second filter element 300 and third filter element 400 are integrated to be set up in same shell 100, and the filtration passageway of these three filter elements is relatively independent and communicate in proper order, can satisfy the multistage filtration demand of purifier, can also reduce the number of the filter core of purifier simultaneously, reduces the inner space of purifier, reduces the whole volume of purifier, also can reduce the inside filter core interface figure of purifier, and then can reduce the risk of leaking.

As shown in fig. 1, in some embodiments of the present invention, the first flow channel L1 is a raw water channel, and the second flow channel L2 is a pure water channel; the first filter element 200 is a reverse osmosis filter element, the second filter element 300 is a carbon rod filter element, and the third filter element 400 is an ultrafiltration membrane filter element. The raw water is primarily filtered by the first filter element 200 to remove impurities such as bacteria, inorganic substances, minerals (e.g., calcium carbonate, calcium sulfate, silicon) and the like in the raw water, secondarily filtered by the second filter element 300 to remove residual chlorine in the raw water and improve taste, and finally filtered by the third filter element 400 for three times to remove carbon particles carried by the raw water flowing through the second filter element 300, so as to ensure filtering effect and improve water quality.

Further, as shown in fig. 1, in some embodiments of the present invention, the first filter element 200 includes: a first case 210 and a first core 220 having an upper end connected to the first case 210 and a lower end connected to the outer case 100; a waste water channel L3 is formed between the first shell 210 and the third filter element 400; a water passing cavity 220a communicated with the filtering channel of the first inner core 220 is arranged in the first inner core 220, the top of the water passing cavity 220a is communicated with a waste water channel L3, and the bottom of the water passing cavity 220a is communicated with a first water flowing channel L1. As shown in fig. 2, raw water flows into the bottom of the outer shell 100 through the first water flow channel L1 and flows upwards into the water passing cavity 220a of the first core 220, in the process of flowing through the water passing cavity 220a, the raw water after primary filtration flows into the central through hole of the first core 220 through the filtration channel, and wastewater (i.e. wastewater with high concentration of impurities) flows upwards into the wastewater channel L3 for collection, so as to facilitate subsequent treatment, thereby preventing impurities in the raw water from blocking the filtration channel of the first core 220 and ensuring the water yield of the water purifier. It should be noted that the waste water passage L3 of the composite filter element is communicated with the waste water passage of the water channel plate.

As can be appreciated, first inner core 220 includes: the first inner core shell and the Reverse Osmosis membrane, namely RO (Reverse Osmosis) membrane are sleeved in sequence from outside to inside. Wherein, the clearance between first inner core casing and the reverse osmosis membrane constitutes crosses water cavity 220a, has a plurality of filtration passageways on the reverse osmosis membrane, and the filtration precision can reach 0.0001 micron.

In particular to some embodiments of the present invention, as shown in fig. 1, the first housing 210 includes: end caps 211 and tarpaulins 212; the tarpaulin 212 is connected between the end cap 211 and the first core 220. The end cap 211 is covered on the outside of the second filter element 300, the first inner core 220 is connected with the second filter element 300, and then the waterproof cloth 212 is rolled up and fixed between the end cap 211 and the first inner core 220 by using the back glue, so that the first filter element 200 and the second filter element 300 can be conveniently and quickly disassembled. When the waterproof cloth is applied, the waterproof cloth 212 can be wound for a plurality of circles, so that water leakage is avoided.

Alternatively, the tarpaulin 212 may be a Polyethylene (PE) film, and the tarpaulin 212 has a certain strength to support the end cap 211 above the first core 220.

In some embodiments of the present invention, as shown in fig. 1, a clamping boss 110 is disposed on the bottom wall of the housing 100; the chucking protrusions 110 are snapped into the central hole 220b of the first core 220. The clamping boss 110 of the outer shell 100 is inserted into the central hole 220b of the first inner core 220, so as to block the central hole 220b of the first inner core 220, and prevent the raw water filtered by the first inner core 220 from flowing out of the central hole 220b of the first inner core 220 into the first water flow passage L1. It is understood that the outer contour of the clamping boss 110 is matched with the structure of the central hole 220b of the first inner core 220, for example, if the central hole 220b of the first inner core 220 is a circular hole, the outer contour of the clamping boss 110 is a circular shape matched with the circular hole. In addition, after the boss 110 to be clamped is clamped into the central hole 220b of the first inner core 220, a water passing gap 300b is formed between the first inner core 220 and the bottom wall of the outer shell 100, so that the raw water enters the water passing cavity 220a of the first inner core 220 through the first water flowing channel L1.

As an example, as shown in fig. 1, the housing 100 includes: a case body 120 and a bottom cover 130; the top of the housing body 120 has a first opening and the bottom has a second opening; the bottom cover 130 is covered at the second opening and is provided with a clamping boss 110; the first housing 210 protrudes outside the first opening. Further, the housing body 120 includes a large diameter section and a small diameter section that are communicated with each other, the inner and outer diameters of the large diameter section are both larger than the inner and outer diameters of the small diameter section, and a step surface is provided between the large diameter section and the small diameter section, the small diameter section of the housing 100 is inserted into the waterway plate, and it can be determined that the composite filter element is assembled on the waterway plate when the step surface of the housing 100 is abutted against the waterway plate.

Further, as shown in fig. 1, in some embodiments of the present invention, the lower end of the second filter element 300 is sleeved in the central hole 220b of the first inner core 220, and the lower end of the second filter element 300 extends into the third filter element 400. Therefore, the whole second filter element 300 is not required to be arranged in the central hole 220b of the first inner core 220, the raw water filtered by the first inner core 220 can smoothly flow into the second filter element 300 from the central hole 220b of the first inner core 220 for secondary filtration, and the whole second filter element 300 is not required to be arranged in the third filter element 400, so that the volume of the third filter element 400 is reduced, the structure of the composite filter element is more compact, and the volume of the composite filter element can be further reduced.

In some embodiments of the present invention, as shown in fig. 1, the second filter element 300 is axially provided with a water passing groove 300a communicating with the central hole 220b of the first inner core 220. The primary filtered raw water flows into the water passing groove 300a of the second filter element 300 through the center hole 220b of the first inner core 220, and then passes through the filtering passage of the second filter element 300 to be secondarily filtered. Wherein, have many the filtration passageways of buckling on the carbon-point filter core, through set up water groove 300a on second filter core 300, can shorten the raw water after the primary filtration and pass through the filterable route of carbon-point filter core, shorten the length of filtering the passageway promptly to improve the water yield of water dispenser under the prerequisite of guaranteeing quality of water.

Alternatively, as shown in fig. 1, the water passing groove 300a may be a circular groove coaxially disposed with the first inner core 220.

Further, in some embodiments of the present invention, as shown in fig. 1, a water gap 300b is provided between the upper end of the second filter element 300 and the side wall of the third filter element 400. The primary filtered raw water may be secondarily filtered through the filtering passages at the middle side and the top of the second filter element 300 and discharged. Therefore, the effective filtering area of the third filter element 400 can be increased, and the water yield of the water dispenser can be improved.

Further, in some embodiments of the present invention, as shown in fig. 1, the outer wall of the second filter element 300 is provided with a limiting portion 310; the limiting portion 310 abuts against the inner wall of the third filter element 400. Therefore, the limiting part 310 can limit the third filter element 400 in the circumferential direction, so that the third filter element 400 is prevented from shaking due to the water passing gap 300b between the upper end of the second filter element 300 and the side wall of the third filter element 400, and the use performance of the composite filter element is improved.

Alternatively, the stopper 310 may be a boss formed on the outer wall of the second cartridge 300. It is understood that the boss has the same profile as the third filter element 400, for example, if the third filter element 400 has a circular profile, the boss is a circular boss matching the circular profile. The outer diameter of the boss may be respectively the same as the inner diameter of the lower end of the second housing 410 and the bore diameter of the central hole 220b of the first inner core 220, which is convenient for the processing and production of the second filter element 300 and the assembly of the second filter element 300.

Further, in some embodiments of the present invention, as shown in fig. 1, the third filter element 400 includes: a second shell 410 and a second core 420; the second shell 410 is abutted against the top wall of the first inner core 220, a waste water channel L3 is formed between the second shell 410 and the first shell 210 in a matching manner, the upper inner cavity of the second shell 410 is a second water flowing channel L2, and the upper ends of the second inner core 420 and the second filter element 300 are arranged in the lower inner cavity of the second shell 410. The second housing 410 and the second core 420 are first combined together to form the third filter element 400, the lower end of the second filter element 300 is inserted into the central hole 220b of the first core 220 and connected, and then the upper end of the second filter element 300 is inserted into the lower inner cavity of the second housing 410 until the top wall of the first core 220 abuts against the second housing 410, so that the assembly of the second filter element 300 is realized.

Optionally, the upper end of the second shell 410 protrudes out of the first opening of the housing body 120, so as to facilitate the rotation and the assembly of the composite filter element and the external water passage plate. In addition, the inner and outer diameters of the upper end of the second housing 410 are smaller than the inner and outer diameters of the lower end.

Based on the composite filter element as described above, the following is described with respect to its assembly process: the second casing 410 and the second inner core 420 are combined together by glue to form an ultrafiltration semi-finished product (namely, a third filter element 400), the lower end of the second filter element 300 is plugged into the central hole 220b of the first inner core 220 and then connected by sealant, the upper end of the second filter element 300 is plugged into the ultrafiltration semi-finished product, the end cover 211 of the first filter element 200 is covered on the ultrafiltration semi-finished product, the end cover 211 and the first inner core 220 are attached together by waterproof cloth 212 to form a reverse osmosis filtration component (namely, the first filter element 200), the clamping boss 110 on the bottom cover 130 of the outer shell 100 is plugged into the reverse osmosis filtration component, and finally the whole is placed into the outer shell body 120 of the outer shell 100 and sealed into a whole by spin-on.

The utility model also provides a water purifier, this water purifier includes: a composite filter element according to any one of the preceding claims.

As above-mentioned purifier, composite filter's first filter core 200, second filter core 300 and third filter core 400 are integrated to be set up in same shell 100, and the filtration passageway of these three filter cores is relatively independent and communicate in proper order, can satisfy the multistage filtration demand of purifier, can also reduce the number of the filter core of purifier simultaneously, reduce the inner space of purifier, reduce the whole volume of purifier, also can reduce the inside filter core interface figure of purifier, and then can reduce the risk of leaking.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (11)

1. A composite filter element, comprising: the filter comprises a shell (100), a first filter element (200) arranged in the shell (100), and a second filter element (300) and a third filter element (400) arranged in the first filter element (200);

a first water flowing channel (L1) communicated with the filtering channel of the first filter element (200) is formed between the first filter element (200) and the shell (100), a second water flowing channel (L2) communicated with the filtering channel of the third filter element (400) is arranged in the third filter element, wherein the first water flowing channel (L1) is a raw water channel, and the second water flowing channel (L2) is a pure water channel, or the first water flowing channel (L1) is a pure water channel, and the second water flowing channel (L2) is a raw water channel;

the filtering passage of the second filter element (300) is communicated between the filtering passage of the first filter element (200) and the filtering passage of the third filter element (400).

2. The composite filter element according to claim 1, wherein the first flow channel (L1) is a raw water channel and the second flow channel (L2) is a pure water channel;

the first filter element (200) is a reverse osmosis filter element, the second filter element (300) is a carbon rod filter element, and the third filter element (400) is an ultrafiltration membrane filter element.

3. The composite filter cartridge of claim 2, wherein the first filter cartridge (200) comprises: a first shell (210) and a first inner core (220) with the upper end and the lower end respectively connected with the first shell (210) and the outer shell (100);

a waste water channel (L3) is formed between the first shell (210) and the third filter element (400);

a water passing cavity (220a) communicated with the filtering channel of the first inner core (220) is arranged in the first inner core (220), and the top and the bottom of the water passing cavity (220a) are respectively communicated with the waste water channel (L3) and the first flowing water channel (L1).

4. The composite filter cartridge of claim 3, wherein the first housing (210) comprises: an end cover (211) and a waterproof cloth (212);

the tarpaulin (212) is connected between the end cap (211) and the first inner core (220).

5. A composite filter element according to claim 3, wherein a clamping boss (110) is provided on the bottom wall of the housing (100);

the clamping boss (110) is clamped into the central hole (220b) of the first inner core (220).

6. The composite filter element of claim 3, wherein the lower end of the second filter element (300) is fitted into the central bore (220b) of the first inner core (220), and the upper end of the second filter element (300) extends into the third filter element (400).

7. The composite filter element according to claim 6, wherein the second filter element (300) is provided with a water passing groove (300a) axially communicated with the central hole (220b) of the first inner core (220).

8. The composite filter element of claim 7, wherein a water gap (300b) is provided between the upper end of the second filter element (300) and the side wall of the third filter element (400).

9. The composite filter element according to claim 8, wherein a limiting part (310) is arranged on the outer wall of the second filter element (300), and the limiting part (310) is abutted against the inner wall of the third filter element (400).

10. The composite filter cartridge of claim 6, wherein the third filter cartridge (400) comprises: a second shell (410) and a second core (420);

the second shell (410) is abutted against the top wall of the first inner core (220) and is matched with the first shell (210) to form the waste water channel (L3), the upper inner cavity of the second shell (410) forms the second water flowing channel (L2), and the upper ends of the second inner core (420) and the second filter element (300) are arranged in the lower inner cavity of the second shell (410).

11. A water purifier, characterized in that the water purifier comprises: a composite filter element according to any one of claims 1 to 10.

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