WO2020010961A1 - Composite filter cartridge and water purifying device - Google Patents

Abstract

A composite filter cartridge (1), the composite filter cartridge (1) comprising a shell (10), an isolating assembly (20), a first filtering material (30) and a second filtering material (40). The shell (10) is internally provided with a filtering chamber (100); the isolating assembly (20) is provided inside of the filtering chamber (100) and divides the filtering chamber (100) into a first filtering chamber (130) and a second filtering chamber (140) that are independent of each other; the first filtering chamber (130) has a water inlet channel (131), a confluence channel (132) and a water outlet channel (133) that are successively in communication with each other; the first filtering material (30) is provided inside of the water inlet channel (131); and the second filtering material (40) is provided inside of the second filtering chamber (140).

Description

Composite filter and water purification equipment

Cross-reference to related applications

This application is based on Chinese patent applications with application numbers of 201810744325.9, 201810744408.8, 201821081983.6, 201821081916.4, and 201821081893.7, and the filing date is July 09, 2018, and claims the priority of the Chinese patent application, the entire content of the Chinese patent application This application is incorporated herein by reference.

Technical field

The invention relates to the field of water purification equipment, in particular to a composite filter element and water purification equipment.

Background technique

With the continuous improvement of people's living standards, people's requirements for water quality are getting higher and higher, so water purification equipment such as water purifiers have also attracted much attention. The existing water purifier is gradually developing towards miniaturization. The multi-stage filter element filtration system in the water purifier is often implemented by a composite filter element structure, so as to reduce the volume of the filter element and improve the water purification effect. the goal of.

In order to meet the user's filtering needs for multiple water qualities, multiple filter cavities can be formed inside the composite filter element, so that the composite filter element has multiple independent filter channels to achieve filtration of different water qualities. However, for the composite filter element, the filter material is located in the corresponding filter cavity, and the water flow easily passes through the filter material near the water inlet and outlet of the filter cavity, and the flow of water in other positions of the filter material is poor. , Which in turn will lead to poor overall utilization of the filter material.

Summary of the invention

The main object of the present invention is to propose a composite filter element for water purification equipment, which aims to improve the overall utilization rate of the first filter material in the composite filter element.

In order to achieve the above object, the composite filter element provided by the present invention includes: a housing with a filter cavity therein; an isolation component disposed in the filter cavity, and separating the filter cavity into a first filter cavity and a first filter cavity which are independent of each other. Two filter chambers; the first filter chamber has a water inlet channel, a confluence channel, and a water outlet channel which are sequentially connected; the casing is provided with a first water inlet connected with the water inlet channel, and the first water inlet is connected with the water inlet channel; A first water outlet communicating with the water outlet channel, the casing is further provided with a second water inlet and a second water outlet communicating with the second filter cavity; a first filter material is provided in the water inlet channel And is located between the first water inlet and the confluence channel; and a second filter material is disposed in the second filter cavity and is located between the second water inlet and the second water outlet between.

In some embodiments of the present invention, the first filter medium has opposite ends, the first water inlet is disposed near one end of the first filter material, and the water inlet of the convergence channel is close to the first The other end of a filter medium is provided.

In some embodiments of the present invention, the isolation assembly includes: a middle barrel provided in the housing, and a lower end of the middle barrel is provided with a water outlet; a confluence barrel is located in the housing and is sleeved on the housing; The lower end of the middle barrel, the combiner channel is formed in the combiner barrel, and the combiner channel communicates with the water outlet; and the inner barrel is located in the medium barrel, and the second filter cavity is formed inside the inner barrel. Wherein the space between the inside of the casing and the outside of the middle barrel constitutes the water inlet channel, and the combiner barrel is located below the water inlet channel; between the outside of the internal barrel and the inside of the middle barrel The interval forms the water outlet channel, and the water passing port communicates with the water outlet channel.

In some embodiments of the present invention, the busbar includes: a barrel body, the upper end of which is open; the busbar is provided on the inner peripheral surface of the barrel body along the axial direction of the barrel body, and the busbar A plurality of gaps are provided along the circumferential direction of the barrel body, and a bust is formed between two adjacent bus bars; the outer surface of the middle bucket is in contact with the bus bars, and the bottom of the middle bucket A gap is formed between the end surface and the lower end surface of the barrel body, the sink gap is in communication with the water inlet, and the lower end of the sink groove is in communication with the sink gap to form the sink channel; the sink groove The upper end is connected to the water inlet channel to form a water inlet of the confluence channel.

In some embodiments of the present invention, a first interface extends downward from a lower end surface of the barrel body, and the first interface communicates with the convergence gap; a lower end surface of the intermediate barrel faces downward along the water passing opening. A second interface is extended, the second interface is located within the first interface, and the second interface is in communication with the first interface.

In some embodiments of the present invention, the casing includes: an outer barrel, an upper end of which is open, and the middle barrel and the combiner barrel are both located in the outer barrel; At the upper end of the outer tub, the filter element joint is provided with the first water inlet, the first water outlet, the second water inlet, and the second water outlet.

In some embodiments of the present invention, the first filter medium is provided in a cylindrical shape and is sleeved on the outer side of the middle tub. There is a gap between them; the internal space of the first filter material is in communication with the confluence channel, and the external space of the first filter material is in communication with the first water inlet.

In some embodiments of the present invention, an upper portion of the middle bucket has an annular baffle plate extending outward in a circumferential direction thereof, and a gap is provided between the annular baffle plate and an inner peripheral surface of the outer bucket; The first filter material is located between the annular water blocking plate and the combiner bucket, and an upper end surface of the first filter material is in abutting contact with the annular water plate, and a lower end surface of the first filter material It is in sealing contact with the upper end of the combiner barrel.

In some embodiments of the present invention, a support cylinder frame is also sleeved between the first filter material and the middle tub, and there is a gap between the support cylinder frame and an outer peripheral surface of the middle tub. The support cylinder frame has a plurality of water outlets; the first filter material is sleeved on the outside of the support cylinder frame, or the first filter material is wound and disposed on the outside of the support cylinder frame.

In some embodiments of the present invention, the second filter medium is arranged in a cylindrical shape, and an internal space of the second filter medium is communicated with the second water outlet, and an external space of the second filter medium is The second water inlet is connected.

In some embodiments of the present invention, the lower end of the inner barrel is spaced from the lower end of the middle barrel, and the lower end of the inner barrel extends downward with a support portion, and the support portion abuts the lower end of the middle barrel. Pick up.

In some embodiments of the present invention, the support portion includes an annular flange extending downward in a circumferential direction of the inner tub, and the water inlet is located inside the annular flange; an inner surface of a lower end of the middle tub is convex An abutting rib is provided, and the abutting rib is in abutment with the annular flange, so that a first water gap is defined between the annular flange and the lower end of the bucket, and the first A water passing gap connects the water passing port and the water outlet channel.

In some embodiments of the present invention, a lower end surface of the inner tub and the lower end surface of the middle tub abut, and a second water-passing gap is formed at the abutting surface of the inner tub and the middle tub, and the second A water passing gap communicates with the water passing port and the water outlet channel.

In some embodiments of the present invention, an isolation component is provided in the filter cavity and divides the filter cavity into a first filter cavity and a second filter cavity which are independent of each other, and the first filter cavity has a A connected water inlet channel, a confluence channel, a secondary filtering channel, and a water outlet channel; the casing is provided with a first water inlet connected to the water inlet channel and a first outlet connected to the water outlet channel A water inlet, the housing is further provided with a second water inlet and a second water outlet that communicate with the second filter cavity; a first filter material is provided in the water inlet channel and is located in the first Between a water inlet and the confluence channel; a second filter material provided in the second filter cavity and between the second water inlet and the second water outlet; and a third filter material, provided In the secondary filtering channel.

In some embodiments of the present invention, the third filter medium is provided in a cylindrical shape, an upper end surface of the third filter medium is in abutting contact with a lower end surface of the inner tub, and a lower end surface of the third filter medium is in contact with The lower end surface of the middle tub is hermetically abutted; the internal space of the third filter medium is in communication with the water outlet, and the external space of the third filter medium is in communication with the water outlet channel.

In some embodiments of the present invention, the lower end surface of the inner tub has an annular flange extending downward along its circumferential direction, the third filter material is located inside the annular flange, and an outer peripheral surface of the third filter material There is a gap with the inner peripheral surface of the annular flange; the lower end surface of the middle bucket is convexly provided with an abutting rib, and the abutting rib is in abutment with the annular flange so that A first water-passing gap is defined between the annular flange and the bottom end of the middle tub, and the first water-passing gap is used to communicate the inner and outer sides of the annular flange.

In some embodiments of the present invention, the composite filter element further includes a first end cap and a second end cap, and the first end cap is located between an upper end surface of the third filter material and a lower end surface of the inner tub. The first end cover is in abutting contact with the upper end surface of the third filter medium; the second end cover is disposed between the lower end surface of the third filter medium and the lower end surface of the tub; Two end covers are in contact with the lower end surface of the third filter medium, and the second end cover is provided with a first opening corresponding to the water inlet, and the first opening communicates with the water outlet and the third filter material. Interior space.

In some embodiments of the present invention, the second end cap extends downward along the edge of the first opening with a first drainage interface, and the first drainage interface is sealed and penetrates the water inlet, so that the first A drainage interface communicates with the internal space of the convergence channel and the third filter medium.

In some embodiments of the present invention, the third filter medium is a granular filter medium, and the composite filter element further includes a filter bucket provided between the inner bucket and the middle bucket, and the inside of the filter bucket is filled. There is the third filter material, and a second drainage interface extends from a lower end of the filter barrel toward the bottom, and the second drainage interface is sealed and penetrates the water inlet to communicate the convergence channel and the inside of the filter barrel; A second opening is provided on the outer peripheral surface of the filter bucket near its upper end, and the second opening communicates with the water outlet channel and the inside of the filter bucket.

In some embodiments of the present invention, the lower end of the inner bucket has an annular flange extending downward along its circumferential direction, the filter bucket is located inside the annular flange, and an outer peripheral surface of the filter bucket and the annular flange There is a gap between the inner peripheral surfaces of the middle barrel; an abutment rib is convexly protruded from the lower end surface of the middle barrel, and the abutment rib is in contact with the annular flange, so that the annular flange and the A first water-passing gap is defined between the bottom ends of the middle barrels, and the first water-passing gap is used to communicate the inner and outer sides of the annular flange.

In some embodiments of the present invention, the filter element joint includes: a body, the body having an open portion that is open downward, the open portion is used to connect the filter element, and the open portion includes the body A cylindrical cavity defined by an outer plate, the first cavity and the second cavity in a closed loop are radially disposed in the cylindrical cavity, and the second rib is disposed on the first cavity On the outer periphery of the rib, the first flow guide groove is closed to form a first flow channel groove. A first flow hole is provided in the first flow passage groove, and between the second flow guide rib and the first flow guide groove. A second flow channel groove is formed, a second flow hole is provided in the second flow channel groove, and a connection between the first flow guide rib and the second flow guide rib is provided between the first flow guide rib and the second flow guide groove. A first reinforcing rib of the second guide rib; a joint portion located on the body and opposite to the open portion; a water flow channel is provided inside the joint portion; and the joint portion is provided with a A third flow hole communicating with the first flow hole and a fourth flow hole communicating with the second flow hole.

In some embodiments of the present invention, a third guide rib is further provided radially in the cylindrical cavity, the third guide rib is disposed on the outer periphery of the second guide rib, and the second guide rib A third flow channel groove is formed between the rib and the third flow guiding rib, and a fourth flow channel groove is formed between the third flow guiding rib and the outer plate of the body, and the third flow channel groove A fifth flow hole is provided therein, a sixth flow hole is provided in the fourth flow channel groove, and a seventh flow hole communicating with the fifth flow hole and a sixth flow hole are provided on the joint portion. The eighth circulation hole communicating with the hole.

In some embodiments of the present invention, the first reinforcing rib includes a supporting portion and a limiting portion extending from a free end of the supporting portion in a direction away from the joint portion, and the limiting portion is closely adjacent to the limiting portion. The inner wall of the second guide rib is disposed.

In some embodiments of the present invention, a second reinforcing rib connecting the second guiding rib and the third guiding rib is provided between the second guiding rib and the third guiding rib, A reinforcing portion is further provided between an end of the second reinforcing rib near the joint portion and the third guide rib.

In some embodiments of the present invention, a third reinforcing rib connecting the third guiding rib and the outer plate is provided between the third guiding rib and the outer plate of the body, and the first The distances from the lower ends of the reinforcing ribs, the second reinforcing ribs, and the third reinforcing ribs to the joint portion are sequentially increased.

In some embodiments of the present invention, the outer plate of the main body has a capped end remote from the joint portion, and an end surface of the capped end is provided with two annular grooves extending along a circumferential direction thereof.

In some embodiments of the present invention, the two annular grooves are an inner groove and an outer groove, respectively, and the capped ends corresponding to the inner grooves are located below the capped ends corresponding to the outer grooves.

In some embodiments of the present invention, the first guide rib, the second guide rib, the third guide rib, and the outer plate are all arranged in a circular ring shape.

In some embodiments of the present invention, the distance between the first diversion rib, the second diversion rib, the third diversion rib, the lower end of the outer plate and the joint portion increases in sequence.

The invention also provides a water purification device, which includes a composite filter element, the composite filter element includes a housing, an isolation component, a first filter material, and a second filter material; a filter cavity is provided in the housing; and the isolation component is provided in Inside the filter cavity, and separating the filter cavity into a first filter cavity and a second filter cavity which are independent from each other; the first filter cavity has a water inlet channel, a confluence channel and a water outlet channel which are communicated in sequence; The housing is provided with a first water inlet connected to the water inlet channel and a first water outlet connected to the water outlet channel, and the housing is further provided with a communication with the second filter cavity. A second water inlet and a second water outlet; the first filter material is provided in the water inlet channel and is located between the first water inlet and the confluence channel; and the second filter material is provided In the second filter cavity and between the second water inlet and the second water outlet.

In the technical solution of the present invention, the first filter material is set in the water inlet channel. The purified water filtered by the first filter material first needs to pass through the confluence channel, and then flows to the water outlet channel, and is finally discharged from the first water outlet. Because of the setting of a confluence channel, the confluence channel can continue to collect and purify the purified water passing through the first filter material, slowing down the flow rate of the water when passing through the first filter material, so that the water to be purified can be evenly distributed from the The passage of various positions, that is, the better filtration effect can be achieved in each position of the first filter material, thereby improving the overall utilization of the first filter material, and avoiding, for example, the first filter material due to local excessive consumption of the first filter material The overall life of the filter reduces the risk, which can significantly improve the filtering effect of the first filter medium, and also guarantee the normal working life of the first filter medium.

Additional aspects and advantages of the present application will be given in part in the following description, part of which will become apparent from the following description, or be learned through practice of the present application.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, wherein

1 is a schematic structural diagram of an embodiment of a composite filter element of the present invention;

2 is a cross-sectional view of an embodiment of the composite filter element of the present invention;

3 is an exploded view of an embodiment of the composite filter element of the present invention;

4 is a sectional view of an embodiment of the composite filter element of the present invention;

FIG. 5 is a schematic structural diagram of a supporting cylinder frame according to an embodiment of the composite filter element of the present invention; FIG.

FIG. 6 is a schematic structural diagram of a combined bucket of a composite filter element of the present invention; FIG.

FIG. 7 is a cross-sectional view of a combined bucket of the composite filter element of the present invention;

FIG. 8 is a schematic structural diagram of an inner barrel of a composite filter element of the present invention;

Figure 9 is a sectional view of Figure 8;

10 is a schematic diagram of the installation of a second filter element, an upper end cover, and a lower end cover of an embodiment of the composite filter element of the present invention;

11 is a schematic diagram of a water flow direction of a composite filter element according to an embodiment of the present invention;

12 is a schematic diagram of the internal structure of another embodiment of the composite filter element of the present invention;

13 is a schematic structural diagram of an inner tub of a composite filter element according to another embodiment of the composite filter element of the present invention;

14 is a schematic diagram of the internal structure of the inner bucket in FIG. 13;

FIG. 15 is a schematic diagram of a water flow direction of the composite filter element in FIG. 12.

16 is a schematic structural diagram of another embodiment of a composite filter element of the present invention;

17 is a schematic diagram of the internal structure installation of the composite filter element in FIG. 16;

18 is a schematic diagram of the installation of the third filter element, the first end cover, and the second end cover in FIG. 16;

19 is a schematic diagram of a water flow direction of the composite filter element in FIG. 17;

20 is a schematic diagram of the internal structure of still another embodiment of the composite filter element of the present invention;

21 is an exploded view of the composite filter element in FIG. 20;

22 is a schematic structural diagram of a filter bucket of the composite filter element in FIG. 20;

23 is a schematic diagram of a water flow direction of the composite filter element in FIG. 20;

24 is a schematic structural diagram of a filter element joint of the present invention;

25 is a plan view of a filter element joint of the present invention;

26 is a schematic structural view of a filter element joint according to another aspect of the present invention;

FIG. 27 is a partially enlarged view at A in FIG. 26; FIG.

FIG. 28 is a schematic structural view of another aspect of the filter element joint of the present invention; FIG.

FIG. 29 is a partially enlarged view at B in FIG. 28; FIG.

FIG. 30 is a schematic structural view from another perspective of the top view of the filter element joint of the present invention;

Reference signs:

Label	name	Label		name
1	Composite filter	710	Second limit flange
10	case	910	Second drainage interface
20	Isolate components	920	Second opening
30	First filter	131	Water inlet channel
40	Second filter	132	Confluence channel
50	Support tube rack	133	Outlet channel
60	Upper end cap	134	Secondary filtering channel
70	Lower end cap	211	Water outlet
80	Third filter	212	Second interface
80a	First end cap	213	Ring flap
80b	Second end cap	214	Abutment
90	Filter bucket	215	First water gap
100	Filter cavity	221	Barrel
110	Outer bucket	222	Bus bar
120	Filter connector	223	Confluence
130	First filter cavity	224	Convergence gap
140	Second filter cavity	225	First interface
210	Medium bucket	232	Ring flange
220	Confluence bucket	501	Water outlet
230	Inner barrel	801	Third limit flange

310	First sub filter	802	First opening
320	Second sub filter	803	First drainage interface
610	First stop flange	804	Fourth limit flange
620	Filter interface	231	Support
216	Second passing gap	Zh		Zh
1	Composite filter	111	First diversion rib
11	Ontology	113	Third diversion rib
112	Second diversion rib	114a	Inner groove
114	Outboard	115	First stiffener
114b		Outer groove	115b		Limiting Department
115a
Support	117	Strengthening Department
116	Second rib	11a	First circulation hole
118	Third rib	11c	Fifth circulation hole
11b	Second circulation hole	12	Joint section
11d	Sixth circulation hole	122	Fourth circulation hole
121	Third circulation hole	124	Eighth circulation hole
123	Seventh circulation hole	II	Second runner groove
I	First runner groove	IV	Fourth runner groove
III	Third runner groove	Zh	Zh

detailed description

In the following, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

It should be noted that if there is a directional indication (such as up, down, left, right, front, back, etc.) in the embodiment of the present invention, the directional indication is only used to explain in a specific posture (as shown in the accompanying drawings) (Shown) the relative positional relationship and movement of each component, etc., if the specific posture changes, the directivity indication will change accordingly.

In addition, if there are descriptions related to "first", "second", etc. in the embodiment of the present invention, the descriptions of "first", "second", etc. are only used for description purposes, and cannot be understood as instructions or hints Its relative importance or implicitly indicates the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but must be based on those that can be realized by a person of ordinary skill in the art. When the combination of technical solutions conflicts or cannot be achieved, such a combination of technical solutions should be considered non-existent. , Is not within the scope of protection claimed by the present invention.

The invention proposes a composite filter element, which is suitable for water purification equipment. The water purification equipment may be a device such as a water purifier or a water purifier. The composite filter element is installed in the water purification equipment to realize water purification and purification.

In an embodiment of the present invention, referring to FIG. 1 to FIG. 11, the composite filter element 1 includes:

The housing 10 is provided with a filtering cavity 100 therein;

An isolation assembly 20 is provided in the filter cavity 100 and divides the filter cavity 100 into a first filter cavity 130 and a second filter cavity 140 which are independent from each other; the first filter cavity 130 has an inlet connected in sequence. A water inlet 131, a confluence channel 132, and a water outlet channel 133; the casing 10 is provided with a first water inlet connected to the water inlet channel 131 and a first water outlet connected to the water outlet channel 133; The casing 10 is further provided with a second water inlet and a second water outlet that are in communication with the second filter cavity 140;

The first filter material 30 is disposed in the water inlet channel 131 and is located between the first water inlet and the confluence channel 132; and

A second filter material 40 is disposed in the second filter cavity 140 and is located between the second water inlet and the second water outlet.

The composite filter element 1 is installed in a water purification device. The composite filter element 1 has two mutually independent filtering channels, thereby realizing filtration of various water qualities to meet users' water requirements for various water qualities. The composite filter element 1 specifically includes The housing 10, the isolation module 20, the first filter medium 30 and the second filter medium 40, wherein a filter cavity 100 is formed inside the housing 10, and the isolation module 20 separates the filter cavity 100 into mutually independent first filter cavities 130 and the second filter cavity 140, that is, the first filter cavity 130 and the second filter cavity 140 respectively have independent flow channels, and the inflow and outflow of water do not interfere with each other. The first filter cavity 130 has a water inlet channel 131, a confluence channel 132, and a water outlet channel 133 which are sequentially connected to each other. The casing 10 is provided with a first water inlet connected to the water inlet channel 131 and communicated with the water outlet channel 133. The first water outlet, the first filter material 30 is located in the water inlet channel 131. In this way, the water to be purified enters the water inlet channel 131 from the first water inlet, and after filtering by the first filter material 30, flows to the convergence channel 132, It then flows from the water outlet channel 133 to the first water outlet. The casing 10 is also provided with a second water inlet and a second water outlet that are in communication with the second filter cavity 140. The second filter material 40 is located in the second filter cavity 140 and is located between the second water inlet and the second water outlet. In this way, after the purified water enters the second filter cavity 140 from the second water inlet, it is filtered by the second filter material 40, and then flows out through the second water outlet.

The positions of the first water inlet, the first water outlet, the second water inlet, and the second water outlet on the housing 10 may be determined according to the internal structure of the first filter cavity 130 and the second filter cavity 140, and the housings may be separately provided. Anywhere on 10. Of course, the first water inlet, the first water outlet, the second water inlet, and the second water outlet are preferably arranged centrally at one end of the casing 10 to facilitate waterway connection and avoid excessively complicated waterway connection pipes in the water purification equipment.

It should be noted that, in the above embodiment, for the first filter cavity 130, the first filter material 30 is disposed in the water inlet channel 131, and the purified water filtered by the first filter material 30 first needs to pass through the merge channel 132. After the confluence, it can flow to the water outlet channel 133 and finally be discharged from the first water outlet. Since a collecting channel 132 is provided, the collecting channel 132 can continue to collect and purify the purified water passing through the first filter material 30. In this process, the water flow will be concentrated in the collecting channel 132, so that the water pressure in the collecting channel 132 increases. Therefore, the flow velocity of the water passing through the first filter medium 30 is slowed down, so that the water to be purified can uniformly pass through various positions of the first filter medium 30, that is, each position of the first filter medium 30 can achieve better The filtering effect further improves the overall utilization rate of the first filter medium 30 to avoid the risk of reducing the overall life of the first filter medium 30 due to local excessive consumption of the first filter medium 30, which can significantly improve the filtration of the first filter medium 30 The effect also guarantees the normal working life of the first filter medium 30.

In order to further improve the overall utilization rate of the first filter medium 30 so that the water to be purified can pass through the first filter medium 30 more uniformly, in this embodiment, for the first filter medium 30, the first filter medium 30 has a relative At both ends, the first water inlet is set near one end of the first filter material 30, and the water inlet of the merge channel 132 is set near the other end of the first filter material 30. Because the first water inlet and the water inlet of the manifold 132 are located on both sides of the first filter material 30, in this way, when the water flows from the first water inlet to the water inlet of the manifold 132, the water can pass through the first more evenly. The filter medium 30 avoids the defect that the partial life of the first filter medium 30 is too short, so that the overall utilization rate of the first filter medium 30 is greatly improved.

Further, in this embodiment, the above-mentioned isolation assembly 20 includes a middle bucket 210, a combine bucket 220, and an inner bucket 230, wherein: the medium bucket 210 is disposed in the casing 10, and the lower end of the medium bucket 210 is provided with a water outlet 211; the combine bucket 220 is located in the casing 10 and is sleeved on the lower end of the middle barrel 210. A combiner channel 132 is formed in the combiner barrel 220, and the combiner channel 132 is connected to the water outlet 211. The inner barrel 230 is located in the middle barrel 210 and the second inside the inner barrel 230 Filter chamber 140; the space between the inside of the casing 10 and the outside of the middle barrel 210 constitutes a water inlet passage 131, and the combiner barrel 220 is located below the water inlet channel 131; the space between the outside of the inner barrel 230 and the inside of the middle barrel 210 constitutes a water outlet passage 133, The water inlet 211 communicates with the water outlet passage 133.

It can be understood that the upper end of the bus barrel 220 is open, the bus barrel 220 is sleeved on the lower end of the middle barrel 210, the bus barrel 220 and the middle barrel 210 are disposed together in the casing 10, and the inner barrel 230 is disposed in the middle barrel. Inside 210, a vertical water inlet channel 131 is formed between the inner peripheral surface of the casing 10 and the outer peripheral surface of the middle tub 210, and a vertical direction is formed between the outer side of the inner tub 230 and the inner side of the middle tub 210. A water outlet channel 133 is provided, and a combiner channel 132 is formed in the combiner barrel 220, and the combiner channel 132 and the lower end of the inlet channel 131 are in communication with each other; the bottom of the middle bucket 210 is connected to the combiner bucket 220 through the water outlet 211 provided on the lower end surface thereof. The interior of the communication is connected, so that the water passing port 211 communicates the confluence channel 132 and the water outlet channel 133. At this time, the first water inlet and the first water outlet are both located at the upper end of the casing 10, the water to be purified enters the water inlet passage 131 from the first water inlet, and the purified water filtered by the first filter material 30 is subject to the pressure of the water flow and Under the influence of its own gravity, it flows downward. Purified water is concentrated and merged from the confluence channel 132, and then the purified water flows upward through the water outlet channel 133 to the first water outlet to realize the filtering process of the water flow in the first filter cavity 130.

Further, in the embodiment, the above-mentioned combine bucket 220 preferably has the following structure:

Referring to FIGS. 2 to 4, and combining 6 and FIG. 7 and FIG. 11, the bus barrel 220 includes a barrel body 221 and a bus bar 222, and the upper end of the barrel body 221 is open. The bus bar 222 is provided along the axial direction of the barrel body 221. On the inner peripheral surface of the barrel body 221, a plurality of bus bars 222 are provided at intervals along the circumferential direction of the barrel body 221. A bus groove 223 is formed between two adjacent bus bars 222; an outer surface of the middle barrel 210 and the bus bars 222 abut against each other. The lower end of the middle barrel 210 and the lower end of the barrel body 221 form a bus gap 224. The bus gap 224 communicates with the water inlet 211, and the lower end of the bus tank 223 communicates with the bus gap 224 to form a bus channel 132. The upper end of the groove 223 communicates with the water inlet channel 131 to form a water inlet of the confluence channel 132.

When the collecting bucket 220 is set at the lower end of the middle bucket 210, the collecting rib 222 will abut against the outer surface of the middle bucket 210, and then a collecting groove 223 is formed between two adjacent collecting ribs 222; The lower end surface of the barrel body 221 extends in the direction of the water outlet 211, so that the formed sink 223 can directly communicate with the water outlet 211; or the bus bar 222 is provided only on the inner peripheral surface of the barrel 221, and the bottom of the middle barrel 210 A bus gap 224 is formed at an interval between the end surface and the lower end surface of the barrel body 221, and the bus groove 223 and the water passage 211 are communicated through the bus gap 224. In this embodiment, it is preferable that the bus gap 224 and the bus groove 223 communicate with each other, thereby forming the bus channel 132 described above.

It should be noted that the water inlet channel 131 is formed on the upper side of the combiner barrel 220, and the upper end of the combiner tank 223 can communicate with the water inlet channel 131, that is, the upper end of the combiner tank 223 is the water inlet of the combiner channel 132.

In order to ensure that the combining bucket 220 has a better combining and collecting effect, in this embodiment, the lower end surface of the bucket body 221 has a first interface 225 extending downward, and the first interface 225 communicates with the combining gap 224. 225, a certain water collecting and converging space is formed on the lower side of the barrel 221, which is more convenient for the concentrated converging of the water flow. A second interface 212 extends downward from the lower end of the bucket 210 along the water inlet 211, and the second interface 212 is located in the first interface 225. The radial dimension of the second interface 212 is smaller than the radial dimension of the first interface 225. The second interface 212 is in communication with the first interface 225, so that the water flows to the water outlet channel 133 in the tub 210 through the second interface 212.

Further, in this embodiment, the above-mentioned casing 10 may specifically include an outer barrel 110 and a filter element connector 120; wherein: the upper end of the outer barrel 110 is open, and the middle barrel 210 and the combiner barrel 220 are both disposed in the outer barrel 110 The filter element joint 120 is sealed and closed on the upper end of the outer tub 110, and the filter element joint 120 is provided with a first water inlet, a first water outlet, a second water inlet and a second water outlet.

The filter element joint 120 may be detachably connected to the upper end of the outer tub 110 in a sealed manner, so as to realize the removal of the filter element, so as to subsequently replace the first filter material 30 and the second filter material 40. Because the filter element joint 120 is provided with a first water inlet, a first water outlet, a second water inlet, and a second water outlet, it is also more convenient to connect the water channel of the composite filter element 1 at this time, and the intricate setting of the connection water circuit is avoided. Great inconvenience in water purification equipment.

In this embodiment, since the water inlet channel 131 is formed between the middle barrel 210 and the outer barrel 110, the water inlet channel 131 is arranged in a ring shape at this time. In order to facilitate the placement of the first filter medium 30, the first filter medium 30 is It is arranged in a cylindrical shape and is sleeved on the outside of the middle barrel 210, and there is a gap between the inner peripheral surface of the first filter material 30 and the outer peripheral surface of the middle barrel 210. The internal space of the first filter material 30 is in communication with the collecting channel 132. The external space of a filter medium 30 communicates with the first water inlet. In this way, the water to be purified entering from the first water inlet can penetrate from the outer peripheral surface of the first filter medium 30 to the inside of the first filter medium 30. Centralized convergence is performed through the convergence channel 132.

In order to facilitate the installation of the first filter element, in the present embodiment, the upper portion of the middle bucket 210 has an annular baffle plate 213 extending outward along its circumferential direction, and the annular baffle plate 213 and the inner peripheral surface of the outer barrel 110 There is a gap; the first filter medium 30 is located between the annular baffle plate 213 and the combiner bucket 220, and the upper end surface of the first filter medium 30 is in abutment with the annular water plate, and the lower end face of the first filter medium 30 and the combiner bucket 220 The upper end of the seal abuts. It can be understood that the bus groove 223 on the bus barrel 220 is located inside the first filter medium 30, so that it is convenient to communicate the internal space of the first filter medium 30 with the bus channel 132. In addition, since the upper and lower ends of the first filter medium 30 are respectively restricted by the annular baffle plate 213 and the combiner bucket 220, the first filter medium 30 is firmly clamped between the annular baffle plate 213 and the combiner bucket 220, Furthermore, the first filter material 30 is prevented from shaking in the water inlet channel 131, so that the structure of the composite filter element 1 is more stable.

In this embodiment, the upper end of the outer barrel 110 is connected to the filter element joint 120, the upper end of the middle barrel 210 is connected to the filter element joint 120, and the upper end of the inner barrel 230 is also connected to the filter element joint 120. In this way, the water inlet passage 131 can be made The upper end of the connector is in communication with the first water inlet on the filter element joint 120, and the upper end of the water outlet channel 133 is in communication with the first water outlet on the filter element joint 120. In order to prevent the ring-shaped water baffle plate 213 on the middle bucket 210 from blocking the water inlet passage 131, a certain gap is reserved between the ring-shaped water baffle plate 213 and the inner peripheral surface of the outer barrel 110, thereby facilitating the flow of water along the water inlet passage. 131 flows downwards.

It should be noted that the first filter medium 30 is provided in a cylindrical shape, and the first filter medium 30 may be a PAC roll paper filter material, a PP cotton filter material, a carbon rod, or a carbon fiber composite filter material. It can be understood that, in order to enhance the purification effect of the first filter material 30, the first filter material 30 can also be formed by stacking multiple core materials on each other. For example, the first filter material 30 includes a radial direction inward. The first sub-filter material 310 and the second sub-filter material 320, which are arranged in this order, can be PAC roll paper filter material, PP cotton filter material, carbon rod or carbon fiber composite filter material. The first sub-filter material 310 and the second sub-filter material 320 have different types of filter materials, so that the water to be purified can realize filtration of multiple filter materials and improve the water quality of the purified water.

Further, when the first filter medium 30 is a roll-type filter medium such as a PAC roll filter medium or PP cotton, in order to facilitate the installation of the first filter medium 30, a sleeve is also set between the first filter medium 30 and the middle barrel 210. There is a support cylinder frame 50, there is a gap between the support cylinder frame 50 and the outer peripheral surface of the tub 210, the support cylinder frame 50 has a plurality of water openings 501; the first filter material 30 is sleeved on the outside of the support cylinder frame 50, or The first filter medium 30 is wound around the outside of the support cylinder holder 50. In this way, the support cylinder frame 50 can support the first filter material 30 and prevent the inner peripheral surface of the first filter material 30 from being bonded to the outer peripheral surface of the tub 210. In addition, because the support cylinder frame 50 is provided with a water opening 501, the purified water filtered by the first filter material 30 can quickly flow down the inside of the support cylinder frame 50 into the combiner barrel 220, and the water inlet channel 131 can be guaranteed. The water inside is smooth.

When the first filter medium 30 adopts a structure in which the first sub-filter medium 310 and the second sub-filter medium 320 are stacked, the second sub-filter medium 320 is preferably a PAC roll filter medium or a roll-up filter medium such as PP cotton. The type of the filter medium of the first sub-filter medium 310 is not limited. At this time, the support cylinder frame 50 is used to support the second sub-filter medium 320.

The filtering principle of the second filter cavity 140 of the composite filter element 1 is described below:

In this embodiment, the second filter medium 40 is arranged in a cylindrical shape, the second filter medium 40 is located in the inner tub 230, and the internal space of the second filter medium 40 communicates with the second water outlet, and the outer space of the second filter medium 40 It is in communication with the second water inlet.

The composite filter element 1 further includes an upper end cover 60 and a lower end cover 70. The upper end cover 60 is in sealing contact with the upper end surface of the second filter material 40, and the lower end cover 70 is in sealing contact with the lower end surface of the second filter material 40. The upper end cover 60 and the lower end cover 70 are provided, so that both sides of the inner side of the second filter medium 40 are separated from each other. The outer peripheral surface of the second filter medium 40 and the inner peripheral surface of the inner tub 230 are spaced from each other. Are connected so that the external space of the second filter medium 40 communicates with the second water inlet; the upper end cover 60 extends upwardly with a filter element interface 620 that communicates with the internal space of the second filter medium 40, and the filter element interface 620 is in phase with the filter element joint 120 The connection makes the internal space of the second filter medium 40 communicate with the second water outlet.

In order to prevent the second filter material 40 from being radially offset from the upper end cover 60 and the lower end cover 70, in this embodiment, the upper end cover 60 extends downwardly with a first limiting flange 610 arranged in a ring shape. The limiting flange 610 may be in contact with the inner peripheral surface and / or the outer peripheral surface of the upper end of the second filter material 40, thereby restricting the movement of the second filter material 40 relative to the upper end cover 60; similarly, the lower end cover 70 extends upward and presents The second limiting flange 710 is arranged in a ring shape, and the second limiting flange 710 can be in contact with the inner peripheral surface and / or the outer peripheral surface of the lower end of the second filter medium 40, thereby limiting the second filter medium 40 to the lower end cover. 70 moves.

The filter material type of the second filter material 40 is not limited. For example, the second filter material 40 may be a carbon rod, so as to eliminate odor in water.

For the above composite filter element 1, the first filter medium 30 may be a front filter medium, the second filter medium 40 is a rear filter medium, and the first filter medium 30 is preferably a PP cotton or PAC coil material, and the second filter medium 40 is preferably a carbon rod.

In a preferred embodiment of the composite filter element 1, referring to FIG. 1 to FIG. 11, the second filter medium 40 generally uses a standard specification filter medium, that is, the length and radial dimensions of the second filter medium 40 have certain requirements. For example, there are only a limited number of common carbon rod length specifications. In the design process of the composite filter element 1, when the length of the second filter medium 40 is short, in order to make the inner bucket 230 fit the second filter medium 40, at this time, the lower end of the inner bucket 230 and the lower end of the middle bucket 210 are Interval setting. In order to ensure the installation stability of the inner tub 230, a support portion 231 extends downward from the lower end of the inner tub 230. The support portion 231 abuts on the lower end of the middle tub 210, and then the support portion 231 and the lower end of the middle tub 210 are abutted to support. A supporting effect on the inner tub 230 to ensure the structural stability of the composite filter element 1.

There are many ways to structure the support portion 231. In this embodiment, the support portion 231 preferably adopts the following structure:

The supporting portion 231 includes an annular flange 232 extending downward in the circumferential direction of the inner tub 230, and the water inlet 211 is located inside the annular flange 232. The inner surface of the lower end of the middle tub 210 is provided with abutting ribs 214 and abutting ribs 214. It is in contact with the annular flange 232 such that a first water passing gap 215 is defined between the annular flange 232 and the lower end of the tub 210. The first water passing gap 215 is connected to the water outlet 211 and the water outlet channel 133. In this way, the purified water filtered by the first filter material 30 flows to the water inlet 211 through the convergence channel 132, and then is guided to the water outlet channel 133 in the inner tub 230 through the first water passing gap 215.

In another preferred embodiment of the composite filter element 1, referring to FIGS. 12 to 15, in order to reduce the structural complexity of the inner tub 230, the lower end surface of the inner tub 230 and the lower end surface of the middle tub 210 abut, and the inner tub 230 and the middle A second passing water gap 216 is formed at the abutting surface of the bucket 210, and the second passing water gap 216 is connected to the water outlet 211 and the water outlet channel 133. It should be emphasized that, compared with the previous embodiment, the lower end of the inner barrel 230 is not provided with a support portion 231, and the inner barrel 230 and the second filter material 40 are also adapted, thereby avoiding the additional design of the support portion 231 on the inner barrel 230. The design disadvantages reduce the structural complexity of the inner bucket 230.

There are various ways to form the second water passing gap 216. For example, the second water passing gap 216 may be a diversion groove opened on the surface of the inner tub 230 or the middle tub 210; or the surface of the inner tub 230 and / or the middle tub 210 may be provided. The ribs further make the second passing water gap 216 between the two.

Referring to FIG. 1 to FIG. 23, another embodiment of the composite filter element 1 is described. As shown in FIGS. 17 to 20, the composite filter element 1 includes: a housing 10 with a filter cavity 100 therein; and an isolation assembly 20 provided in the embodiment. Inside the filter cavity 100, the filter cavity 100 is divided into a first filter cavity 130 and a second filter cavity 140 which are independent of each other. The first filter cavity 130 has a water inlet channel 131, a confluence channel 132, A secondary filtering channel 134 and a water outlet channel 133; the casing 10 is provided with a first water inlet connected to the water inlet channel 131 and a first water outlet connected to the water outlet channel 133; The casing 10 is further provided with a second water inlet and a second water outlet that communicate with the second filter cavity 140; a first filter material 30 is disposed in the water inlet channel 131 and is located in the first Between a water inlet and the confluence channel 132; a second filter material 40 provided in the second filter cavity 140 and between the second water inlet and the second water outlet; and a third filter The material 80 is disposed in the secondary filtering channel 134.

The composite filter element 1 is installed in a water purification device, and the composite filter element 1 has two mutually independent filtering channels, thereby realizing filtering of various water qualities to meet users' various water quality water requirements. The composite filter element 1 specifically includes a housing 10, an isolation module 20, a first filter medium 30, a second filter medium 40, and a third filter medium 80. The filter cavity 100 is formed inside the housing 10, and the isolation module 20 is The filter cavity 100 is divided into a first filter cavity 130 and a second filter cavity 140 that are independent of each other, that is, the first filter cavity 130 and the second filter cavity 140 have independent flow channels, and the inlet and outlet water do not interfere with each other; The cavity 130 has a water inlet channel 131, a confluence channel 132, a secondary filtering channel 134, and a water outlet channel 133 which are sequentially connected to each other. The casing 10 is provided with a first water inlet connected to the water inlet channel 131 and a water outlet channel 133. The first filter medium 30 is connected to the first water outlet 131 and the third filter medium 80 is provided to the second filter channel 134. In this way, the first filter medium 30 and the third filter medium 80 are provided. A multi-stage filtering effect is formed in the first filter cavity 130, which can improve the water purification effect of the first filter cavity 130. For the first filter chamber 130, the water to be purified enters the water inlet channel 131 from the first water inlet, and after filtering by the first filter medium 30, flows to the confluence channel 132 and enters the secondary filter channel 134, and then passes through the third filter. After secondary filtering of the material 80, it finally flows from the water outlet channel 133 to the first water outlet. The casing 10 is also provided with a second water inlet and a second water outlet that are in communication with the second filter cavity 140. The second filter material 40 is located in the second filter cavity 140 and is located between the second water inlet and the second water outlet. In this way, after the purified water enters the second filter cavity 140 from the second water inlet, it is filtered by the second filter material 40, and then flows out through the second water outlet.

The positions of the first water inlet, the first water outlet, the second water inlet, and the second water outlet on the housing 10 may be determined according to the internal structure of the first filter cavity 130 and the second filter cavity 140, and the housings may be separately provided. Anywhere on 10. Of course, the first water inlet, the first water outlet, the second water inlet, and the second water outlet are preferably arranged centrally at one end of the casing 10 to facilitate waterway connection and avoid excessively complicated waterway connection pipes in the water purification equipment.

It should be noted that, in the above embodiment, for the first filter cavity 130, the first filter material 30 is disposed in the water inlet channel 131, and the purified water filtered by the first filter material 30 first needs to pass through the merge channel 132. After the confluence, it can flow to the water outlet channel 133 and finally be discharged from the first water outlet. Since a collecting channel 132 is provided, the collecting channel 132 can continue to collect and purify the purified water passing through the first filter material 30. In this process, the water flow will be concentrated in the collecting channel 132, so that the water pressure in the collecting channel 132 increases. Therefore, the flow velocity of the water passing through the first filter medium 30 is slowed down, so that the water to be purified can uniformly pass through various positions of the first filter medium 30, that is, each position of the first filter medium 30 can achieve better The filtering effect further improves the overall utilization rate of the first filter medium 30 to avoid the risk of reducing the overall life of the first filter medium 30 due to local excessive consumption of the first filter medium 30, which can significantly improve the filtration of the first filter medium 30 The effect also guarantees the normal working life of the first filter medium 30.

In addition, since the first filtering chamber 130 also has a secondary filtering channel 134, the purified water filtered by the first filtering medium 30 can be further filtered through the third filtering medium 80, which can further improve the first water outlet. The effluent water quality makes the water purification effect of the composite filter element 1 significantly improved.

In order to further improve the overall utilization rate of the first filter medium 30 so that the water to be purified can pass through the first filter medium 30 more uniformly, in this embodiment, for the first filter medium 30, the first filter medium 30 has a relative At both ends, the first water inlet is set near one end of the first filter material 30, and the water inlet of the merge channel 132 is set near the other end of the first filter material 30. Because the first water inlet and the water inlet of the manifold 132 are located on both sides of the first filter material 30, in this way, when the water flows from the first water inlet to the water inlet of the manifold 132, the water can pass through the first more evenly. The filter medium 30 avoids the defect that the partial life of the first filter medium 30 is too short, so that the overall utilization rate of the first filter medium 30 is greatly improved.

Further, in this embodiment, the above-mentioned isolation assembly 20 includes a middle bucket 210, a combine bucket 220, and an inner bucket 230, wherein: the medium bucket 210 is disposed in the casing 10, and the lower end of the medium bucket 210 is provided with a water outlet 211; the combine bucket 220 is located in the casing 10 and is sleeved on the lower end of the middle barrel 210. A combiner channel 132 is formed in the combiner barrel 220, and the combiner channel 132 is connected to the water outlet 211. The inner barrel 230 is located in the middle barrel 210 and the second inside the inner barrel 230 The filter cavity 140 is formed with a secondary filtering channel 134 spaced between the lower end surface of the inner barrel 230 and the lower surface of the middle barrel 210; the space between the inside of the casing 10 and the outside of the middle barrel 210 constitutes a water inlet channel 131, and the collecting barrel 220 It is located below the water inlet passage 131; the space between the outside of the inner bucket 230 and the inside of the middle bucket 210 constitutes a water outlet passage 133; the upstream of the secondary filter passage 134 is connected to the water outlet 211, and the downstream of the secondary filter passage 134 communicates with the water outlet passage 133.

It can be understood that the upper end of the bus barrel 220 is open, the bus barrel 220 is sleeved on the lower end of the middle barrel 210, the bus barrel 220 and the middle barrel 210 are disposed together in the casing 10, and the inner barrel 230 is disposed in the middle barrel. Inside 210, a vertical water inlet channel 131 is formed between the inner peripheral surface of the casing 10 and the outer peripheral surface of the middle barrel 210, and a vertical arrangement is formed between the outer side surface of the inner barrel 230 and the inner side surface of the middle barrel 210. A secondary filtering channel 134 is formed between the lower water outlet channel 133 and the lower end of the inner barrel 230 and the lower end of the middle barrel 210. A combining channel 132 is formed in the combining barrel 220. The combiner channel 132 communicates with the lower end of the water inlet channel 131; the bottom of the middle barrel 210 communicates with the combiner channel 132 in the combiner barrel 220 through the water outlet 211 provided on the lower end surface, that is, the secondary filter channel 134 connects the combiner channel 132 和 出 水道 133。 132 and the outlet channel 133.

In this embodiment, the first water inlet and the first water outlet are both located at the upper end of the casing 10, the water to be purified enters the water inlet passage 131 from the first water inlet, and the purified water after the preliminary filtering by the first filter material 30 is subjected to The pressure of the water flow and its own gravity flow downwards. Purified water is concentrated and merged from the confluence channel 132, and then the purified water passes through the confluence channel 132 and enters the secondary filtration channel 134, and then undergoes secondary filtration by the third filter material 80. Then, it flows upward from the water outlet channel 133 to the first water outlet to realize the filtering process of the water flow in the first filter cavity 130.

Further, referring to FIG. 2 to FIG. 4, in combination with FIG. 6, FIG. 7, and FIG. 17 to FIG. 20, in the embodiment, the above-mentioned busbar 220 preferably has the following structure:

The busbar 220 includes a barrel body 221 and a bus bar 222. The upper end of the barrel body 221 is open; the bus bar 222 is provided on the inner peripheral surface of the barrel body 221 along the axial direction of the barrel body 221; A plurality of busbars 223 are formed between two adjacent busbars 222 at an interval. The outer surface of the middle barrel 210 abuts the busbars 222, and the lower end surface of the middle barrel 210 and the lower end surface of the barrel body 221 The bus gap 224 is formed at intervals. The bus gap 224 communicates with the water inlet 211. The lower end of the bus tank 223 communicates with the bus gap 224 to form a bus channel 132. The upper end of the bus tank 223 communicates with the water inlet channel 131 to form the water inlet of the bus channel 132. .

When the collecting bucket 220 is set at the lower end of the middle bucket 210, the collecting rib 222 will abut against the outer surface of the middle bucket 210, and then a collecting groove 223 is formed between two adjacent collecting ribs 222; The lower end surface of the barrel body 221 extends in the direction of the water outlet 211, so that the formed sink 223 can directly communicate with the water outlet 211; or the bus bar 222 is provided only on the inner peripheral surface of the barrel 221, and the bottom of the middle barrel 210 A bus gap 224 is formed at an interval between the end surface and the lower end surface of the barrel body 221, and the bus groove 223 and the water passage 211 are communicated through the bus gap 224. In this embodiment, it is preferable that the bus gap 224 and the bus groove 223 communicate with each other, thereby forming the bus channel 132 described above.

It should be noted that the water inlet channel 131 is formed on the upper side of the combiner barrel 220, and the upper end of the combiner tank 223 can communicate with the water inlet channel 131, that is, the upper end of the combiner tank 223 is the water inlet of the combiner channel 132.

In order to ensure that the combining bucket 220 has a better combining and collecting effect, in this embodiment, the lower end surface of the bucket body 221 has a first interface 225 extending downward, and the first interface 225 communicates with the combining gap 224. 225, a certain water collecting and converging space is formed on the lower side of the barrel 221, which is more convenient for the concentrated converging of the water flow. A second interface 212 extends downward from the lower end of the bucket 210 along the water inlet 211, and the second interface 212 is located in the first interface 225. The radial dimension of the second interface 212 is smaller than the radial dimension of the first interface 225. The second interface 212 is in communication with the first interface 225, so that water flows through the second interface 212 to the secondary filtering channel 134 in the tub 210.

The structure of the secondary filtering channel 134 in this embodiment is specifically described below:

The secondary filtering channel 134 is formed between the lower end of the inner tub 230 and the lower end of the middle tub 210. The upstream of the secondary filtering path 134 communicates with the water inlet 211 at the bottom of the middle tub 210, and the downstream of the secondary filtering path 134 is connected to the middle tub 210. The inner water outlet channel 133 communicates.

Referring to FIG. 17, FIG. 19, and FIG. 20, in a preferred embodiment:

The third filter medium 80 is preferably arranged in a cylindrical shape. The upper end surface of the third filter medium 80 is in sealing contact with the lower end surface of the inner tub 230, and the lower end surface of the third filter medium 80 is in sealing contact with the lower end surface of the middle tub 210. The two sides of the inner side of the third filter medium 80 are isolated from each other, and the internal space of the third filter medium 80 is communicated with the water outlet 211, and the outer space of the third filter medium 80 is communicated with the water outlet channel 133.

It can be understood that the water flow in the convergence channel 132 flows into the internal space of the third filter medium 80 through the water port 211, and after filtering by the third filter medium 80, the water flow passes from the external space of the third filter medium 80 to the water outlet channel 133. Flow to the first outlet.

Further, since there is a gap between the lower end of the inner tub 230 and the middle tub 210, in order to effectively support the inner tub 230, the lower end surface of the inner tub 230 extends along the circumferential direction thereof with an annular flange 232 downward, and the third filter material 80 is located at the annular protrusion. The inner side of the edge 232 has a gap between the outer peripheral surface of the third filter material 80 and the inner peripheral surface of the annular flange 232; the lower end surface of the middle barrel 210 is provided with abutting ribs 214 protruding upward, and abutting ribs 214 It is in contact with the annular flange 232, so that a first water passing gap 215 is defined between the annular flange 232 and the bottom end of the tub 210. The first water passing gap 215 is used to communicate the inner and outer sides of the annular flange 232.

The abutment of the annular flange 232 with the lower end of the middle tub 210 can cause the inner tub 230 to be supported by the middle tub 210, which can effectively avoid risks such as the inner tub 230 falling down or the third tub 80 being crushed by the inner tub 230. In order to prevent the annular flange 232 from obstructing the flow of water in the secondary filtering channel 134, abutting ribs 214 are provided upward on the lower end surface of the middle tub 210 so that the annular flange 232 is connected to the abutting ribs 214. A first water-passing gap 215 may be formed between the annular flange 232 and the lower end surface of the middle tub 210, thereby ensuring the smooth flow of water in the external space of the third filter medium 80, so that the purified water filtered by the third filter medium 80 is directed. The water outlet passage 133 flows.

Further, as shown in FIG. 18 to FIG. 20, for the third filter medium 80 mentioned above, in order to facilitate the installation of the third filter medium 80, the composite filter element 1 further includes a first end cover 80 a and a second end cover 80 b. The cover 80a is located between the upper end surface of the third filter medium 80 and the lower end surface of the inner tub 230. The first end cover 80a is in abutting contact with the upper end surface of the third filter medium 80; the second end cover 80b is provided on the third filter medium 80 Between the lower end surface of the middle barrel 210 and the lower end surface of the middle barrel 210, the second end cover 80b is in contact with the lower end surface of the third filter medium 80. The second end cover 80b is provided with a first opening 802 corresponding to the water inlet 211, and the first opening 802 Connected through the water inlet 211 and the internal space of the third filter medium 80. In this way, the third filter medium 80 can be prevented from being directly installed in contact with the middle tub 210 and the inner tub 230, so as to reduce the manufacturing accuracy of the middle tub 210 and the inner tub 230.

For the first end cover 80a and the second end cover 80b, in order to prevent the third filter material 80 from being radially displaced from the third end cover 80a, the first end cover 80a extends downwardly with a third limiting protrusion arranged in a ring shape. Edge 801, the third limiting flange 801 can be in contact with the inner peripheral surface and / or the outer peripheral surface of the upper end of the third filter material 80, thereby restricting the movement of the third filter material 80 relative to the first end cover 80a; The second end cover 80b extends upward with a fourth limiting flange 804 arranged in a ring shape, and the fourth limiting flange 804 can abut against the inner peripheral surface and / or the outer peripheral surface of the lower end of the third filter material 80. Furthermore, the movement of the third filter medium 80 relative to the second end cover 80b is restricted.

In order to facilitate the communication between the internal space of the third filter material 80 and the collecting channel 132, in this embodiment, the second end cap 80b extends downward along the edge of the first opening 802, and the first drainage interface 803 is sealed. Pass through the water port 211, so that the first drainage interface 803 communicates with the internal space of the convergence channel 132 and the third filter material 80. In this way, water leakage between the first opening 802 and the water port 211 can be avoided to prevent the convergence channel There is a risk that the water in 132 can directly flow to the water outlet passage 133 without being filtered by the third filter medium 80.

In this embodiment, it should be noted that the third filter medium 80 is provided in a roll shape, and the third filter medium 80 may be a PAC roll paper filter material, a PP cotton filter material, a carbon rod, or a carbon fiber composite filter material.

Referring to FIGS. 20 to 23, in another preferred embodiment:

The third filter medium 80 is preferably a granular filter medium. In order to facilitate the setting of the third filter medium 80, the composite filter element 1 further includes a filter bucket 90 provided between the inner bucket 230 and the middle bucket 210. The inside of the filter bucket 90 is filled with the first filter bucket 90. Three filter materials 80, the lower end of the filter bucket 90 is extended with a second drainage interface 910, and the second drainage interface 910 is sealed through the water port 211 to communicate the confluence channel 132 and the inside of the filter barrel 90; the outer peripheral surface of the filter barrel 90 is close to A second opening 920 is provided at a position of an upper end thereof, and the second opening 920 communicates with the water outlet passage 133 and the inside of the filter bucket 90.

By providing the filter bucket 90, the granular third filter material 80 can be filled in the filter bucket 90. The lower end of the filter bucket 90 is provided with a second drainage interface 910, and the water in the convergence channel 132 is introduced into the filter bucket 90. The third filter medium 80 filters the water flow; the upper end of the filter bucket 90 is provided with a second opening 920 to facilitate the water in the filter bucket 90 filtered by the third filter medium 80 to be led out of the filter bucket 90 and finally pass through the water outlet channel 133 Flow to the first outlet.

It can be understood that, because the lower end of the inner barrel 230 and the lower end of the middle barrel 210 have a certain distance, the filter barrel 90 can be installed between the inner barrel 230 and the middle barrel 210. The upper end surface of the filter barrel 90 is preferably better than the inner barrel 230. The lower end faces of the abutment can further support the inner tub 230 together to prevent the inner tub 230 from falling down and improve the structural stability of the composite filter element 1. In order to prevent the second opening 920 on the filter bucket 90 from being covered and blocked by the lower end surface of the inner bucket 230, the second opening 920 of the filter bucket 90 is preferably provided on the outer peripheral surface of the filter bucket 90, and the outer peripheral surface of the filter bucket 90 and the middle bucket 210 There is a gap between the inner peripheral surfaces of the inner peripheral surface, so that the second opening 920 can communicate with the water outlet channel 133.

Further, in order to prevent the inner bucket 230 from being overweight and crushing the filter bucket 90, in this embodiment, the lower end of the inner bucket 230 extends downward along its circumferential direction with an annular flange 232, and the annular flange 232 abuts against the lower end surface of the middle bucket 210. Then, to support the inner bucket 230. Wherein, the filter bucket 90 is located inside the annular flange 232, and there is a gap between the outer peripheral surface of the filter bucket 90 and the inner peripheral surface of the annular flange 232; the lower end surface of the middle bucket 210 is provided with an abutting rib 214 facing upward, The abutting rib 214 abuts the annular flange 232, so that a first water gap 215 is defined between the annular flange 232 and the bottom end of the tub 210. The first water gap 215 is used to communicate with the annular flange 232. Inside and outside. In order to prevent the annular flange 232 from obstructing the flow of water in the secondary filtering channel 134, abutting ribs 214 are provided upward on the lower end surface of the middle tub 210 so that the annular flange 232 is connected to the abutting ribs 214. A first water-passing gap 215 may be formed between the annular flange 232 and the lower end surface of the middle bucket 210, thereby ensuring smooth water flow outside the filter bucket 90, so that the purified water filtered by the third filter material 80 is directed to the water outlet channel 133. flow.

In this embodiment, the third filter material 80 is preferably an activated carbon particle filter material.

Further, in the above embodiment, the above-mentioned casing 10 may specifically include the outer barrel 110 and the filter element joint 120; wherein: the upper end of the outer barrel 110 is disposed open, and the middle barrel 210 and the combiner barrel 220 are both disposed in the outer barrel 110 The filter element joint 120 is sealed and closed on the upper end of the outer tub 110, and the filter element joint 120 is provided with a first water inlet, a first water outlet, a second water inlet and a second water outlet.

The filter element joint 120 may be detachably connected to the upper end of the outer tub 110 in a sealed manner, so as to realize the removal of the filter element, so as to subsequently replace the first filter material 30 and the second filter material 40. Because the filter element joint 120 is provided with a first water inlet, a first water outlet, a second water inlet, and a second water outlet, it is also more convenient to connect the water channel of the composite filter element 1 at this time, and the intricate setting of the connection water circuit is avoided. Great inconvenience in water purification equipment.

In this embodiment, since the water inlet channel 131 is formed between the middle barrel 210 and the outer barrel 110, the water inlet channel 131 is arranged in a ring shape at this time. In order to facilitate the placement of the first filter medium 30, the first filter medium 30 is It is arranged in a cylindrical shape and is sleeved on the outside of the middle barrel 210, and there is a gap between the inner peripheral surface of the first filter material 30 and the outer peripheral surface of the middle barrel 210. The internal space of the first filter material 30 is in communication with the collecting channel 132. The external space of a filter medium 30 communicates with the first water inlet. In this way, the water to be purified entering from the first water inlet can penetrate from the outer peripheral surface of the first filter medium 30 to the inside of the first filter medium 30. Centralized convergence is performed through the convergence channel 132.

In order to facilitate the installation of the first filter material 30, in the present embodiment, the upper portion of the middle bucket 210 has an annular baffle plate 213 extending outward along its circumferential direction, and the annular baffle plate 213 and the inner peripheral surface of the outer barrel 110 There is a gap between them; the first filter material 30 is located between the annular water blocking plate 213 and the collecting bucket 220, and the upper end surface of the first filter material 30 is in abutment with the annular water plate, and the lower end surface of the first filter material 30 is The upper end of the barrel 220 is hermetically abutted. It can be understood that the bus groove 223 on the bus barrel 220 is located inside the first filter medium 30, so that it is convenient to communicate the internal space of the first filter medium 30 with the bus channel 132. In addition, since the upper and lower ends of the first filter medium 30 are respectively restricted by the annular baffle plate 213 and the combiner bucket 220, the first filter medium 30 is firmly clamped between the annular baffle plate 213 and the combiner bucket 220, Furthermore, the first filter material 30 is prevented from shaking in the water inlet channel 131, so that the structure of the composite filter element 1 is more stable.

In this embodiment, the upper end of the outer barrel 110 is connected to the filter element joint 120, the upper end of the middle barrel 210 is connected to the filter element joint 120, and the upper end of the inner barrel 230 is also connected to the filter element joint 120. In this way, the water inlet passage 131 can be made The upper end of the connector is in communication with the first water inlet on the filter element joint 120, and the upper end of the water outlet channel 133 is in communication with the first water outlet on the filter element joint 120. In order to prevent the ring-shaped water baffle plate 213 on the middle bucket 210 from blocking the water inlet passage 131, a certain gap is reserved between the ring-shaped water baffle plate 213 and the inner peripheral surface of the outer barrel 110, thereby facilitating the flow of water along the water inlet passage. 131 flows downwards.

It should be noted that the first filter medium 30 is provided in a cylindrical shape, and the first filter medium 30 may be a PAC roll paper filter material, a PP cotton filter material, a carbon rod, or a carbon fiber composite filter material. It can be understood that, in order to enhance the purification effect of the first filter material 30, the first filter material 30 can also be formed by stacking multiple core materials on each other. For example, the first filter material 30 includes a radial direction inward. The first sub-filter material 310 and the second sub-filter material 320, which are arranged in this order, can be PAC roll paper filter material, PP cotton filter material, carbon rod or carbon fiber composite filter material. The first sub-filter material 310 and the second sub-filter material 320 have different types of filter materials, so that the water to be purified can realize filtration of multiple filter materials and improve the water quality of the purified water.

Further, when the first filter medium 30 is a roll-type filter medium such as a PAC roll filter medium or PP cotton, in order to facilitate the installation of the first filter medium 30, a sleeve is also set between the first filter medium 30 and the middle barrel 210. There is a support cylinder frame 50, there is a gap between the support cylinder frame 50 and the outer peripheral surface of the tub 210, the support cylinder frame 50 has a plurality of water openings 501; the first filter material 30 is sleeved on the outside of the support cylinder frame 50, or The first filter medium 30 is wound around the outside of the support cylinder holder 50. In this way, the support cylinder frame 50 can support the first filter material 30 and prevent the inner peripheral surface of the first filter material 30 from being bonded to the outer peripheral surface of the tub 210. In addition, because the support cylinder frame 50 is provided with a water opening 501, the purified water filtered by the first filter material 30 can quickly flow down the inside of the support cylinder frame 50 into the combiner barrel 220, and the water inlet channel 131 can be guaranteed. The water inside is smooth.

When the first filter medium 30 adopts a structure in which the first sub-filter medium 310 and the second sub-filter medium 320 are stacked, the second sub-filter medium 320 is preferably a PAC roll filter medium or a roll-up filter medium such as PP cotton. The type of the filter medium of the first sub-filter medium 310 is not limited. At this time, the support cylinder frame 50 is used to support the second sub-filter medium 320.

The filtering principle of the second filter cavity 140 of the composite filter element 1 is described below:

In this embodiment, referring to FIG. 10 and combining FIG. 2, FIG. 3, FIG. 11, FIG. 12, FIG. 13, and FIG. 15, the second filter medium 40 is arranged in a cylindrical shape, and the second filter medium 40 is located in the inner tub 230. The internal space of the second filter medium 40 is in communication with the second water outlet, and the external space of the second filter medium 40 is in communication with the second water inlet.

The composite filter element 1 further includes an upper end cover 60 and a lower end cover 70. The upper end cover 60 is in sealing contact with the upper end surface of the second filter material 40, and the lower end cover 70 is in sealing contact with the lower end surface of the second filter material 40. The upper end cover 60 and the lower end cover 70 are provided, so that both sides of the inner side of the second filter medium 40 are separated from each other. The outer peripheral surface of the second filter medium 40 and the inner peripheral surface of the inner tub 230 are spaced apart. Are connected so that the external space of the second filter medium 40 communicates with the second water inlet; the upper end cover 60 extends upwardly with a filter element interface 620 that communicates with the internal space of the second filter medium 40, and the filter element interface 620 is in phase with the filter element joint 120 The connection makes the internal space of the second filter medium 40 communicate with the second water outlet.

In order to prevent the second filter material 40 from being radially offset from the upper end cover 60 and the lower end cover 70, in this embodiment, the upper end cover 60 extends downwardly with a first limiting flange 610 arranged in a ring shape. The limiting flange 610 may be in contact with the inner peripheral surface and / or the outer peripheral surface of the upper end of the second filter material 40, thereby restricting the movement of the second filter material 40 relative to the upper end cover 60; similarly, the lower end cover 70 extends upward and presents The second limiting flange 710 is arranged in a ring shape, and the second limiting flange 710 can be in contact with the inner peripheral surface and / or the outer peripheral surface of the lower end of the second filter medium 40, thereby limiting the second filter medium 40 to the lower end cover. 70 moves.

The filter material type of the second filter material 40 is not limited. For example, the second filter material 40 may be a carbon rod, so as to eliminate odor in water.

In addition, for the composite filter element 1 described above, the first filter medium 30 and the third filter medium 80 may be a front filter medium, and the second filter medium 40 is a rear filter medium, wherein the first filter medium 30 is preferably PP cotton. Or PAC coil, the third filter medium 80 is preferably PP cotton or PAC coil, and the second filter medium 40 is preferably a carbon rod.

Please refer to FIG. 24 to FIG. 31. In yet another embodiment of the present invention, the filter element joint 120 includes a body 11 having an opening portion which is open downward, and the opening portion is used to connect the filter element. The opening portion includes a cylindrical cavity defined by the outer plate 114 of the main body 11, and a first guiding rib 111 and a second guiding rib 112 in a closed loop shape are radially arranged in the cylindrical cavity. Two guide ribs 112 are disposed on the outer periphery of the first guide rib 111. The first guide rib 111 is closed to form a first flow channel groove I, and a first flow hole 11a is provided in the first flow channel groove I. A second flow channel groove II is formed between the second flow guiding rib 112 and the first flow guiding rib 111, and a second flow hole 11b is provided in the second flow channel groove II. A first rib 115 connecting the first diversion rib 111 and the second diversion rib 112 is provided between the diversion rib 111 and the second diversion rib 112;

A joint portion 12 is located on the body 11 and is opposite to the open portion. A water flow channel is provided inside the joint portion 12, and the joint portion 12 is provided to communicate with the first circulation hole 11 a. A third flow hole 121 and a fourth flow hole 12 communicating with the second flow hole 11b.

Specifically, the joint portion 12 and the main body 11 may be detachably connected. In this embodiment, the joint portion 12 and the main body 11 are integrally formed. The opening portion is opened downward, that is, the direction of the opening is downward. The open portion is a cylindrical cavity defined by an outer plate 114 of the body 11, the outer plate 114 is substantially circular, and the guiding ribs provided in the cylindrical cavity are not limited to only the first guiding rib 111 and The second guide rib 112 may also be provided with a third guide rib 113 or more according to requirements. Here, the case where the first guide rib 111 and the second guide rib 112 are provided is discussed first. More guide ribs will be introduced in detail.

The first flow hole 11a communicates only with the first flow channel groove I, and does not communicate with other flow channel grooves. Similarly, the second flow hole 11b also communicates with the second flow channel groove II only. The water flow channel in the joint portion 12 is preferably perpendicular to the extending direction of the open portion, so that when the water from the water flow channel flows into the body, it has a certain buffer against the water, so that the pressure on the joint portion 12 is reduced. , Which has a certain protective effect on the joint part.

In addition, any one of the first flow passage groove I and the second flow passage groove II can be used as the first inlet flow passage, and the other is used as the first outlet flow passage, and the first circulation hole 11a and the second circulation hole 11b are both One of them can be used as the first water inlet, and the other can be used as the first water outlet. Correspondingly, the first water inlet is in communication with the first water inlet channel, and the first water outlet is in communication with the first water outlet channel. The joint portion 12 is provided with a third flow hole 121 communicating with the first flow hole 11a and a fourth flow hole 122 communicating with the second flow hole 11b. There are no strict restrictions on the choice of outlet or inlet for the circulation port and the channel groove, as long as one inlet and one outlet correspond, and the inlet channel is connected to the inlet and the outlet channel is connected to the outlet. At the same time, the filter element joint 120 can also be provided with one water inlet and two water outlets. At this time, there are three flow holes in the filter element joint 120. At this time, it can generally be used as the filter element joint of the RO filter element, that is, one of them is the water inlet. One of the water outlets is a pure water outlet, and the other outlet is a waste water outlet.

In the technical solution of the present invention, the reinforcing ribs are provided between the guide ribs of the body 11 of the filter element joint 120, so that the structural strength and compression resistance of the filter element joint 120 are greatly improved, and after water enters the inside of the filter element joint 120, the filter element joint 120 It has a certain compression resistance, is not easily deformed, and will not break, thereby extending the service life of the filter element joint 120.

In a preferred embodiment, please refer to FIG. 25, FIG. 26, and FIG. 28. A third guide rib 113 is further provided radially in the cylindrical cavity, and the third guide rib 113 is disposed in the first cavity. A third flow channel groove III is formed between the second flow guiding rib 112 and the third flow guiding rib 113 on the outer periphery of the second flow guiding rib 112, and the third flow guiding rib 113 and the body 11 A fourth flow channel groove IV is formed between the outer plates 114, a fifth flow hole 11c is provided in the third flow channel groove III, and a sixth flow hole 11d is provided in the fourth flow channel groove IV. The joint portion 12 is provided with a seventh flow hole 123 communicating with the fifth flow hole 11c and an eighth flow hole 124 communicating with the sixth flow hole 11d. In this embodiment, a guide rib is added, and at the same time, two flow channel grooves are added. One of them can be selected as the second inlet flow channel, and the other is the second outlet flow channel, and the corresponding fifth and sixth circulation channels are added. The hole is also provided as an inlet and outlet corresponding to the water inlet and outlet channels, and the joint portion 12 is provided with a seventh circulation hole 123 communicating with the fifth circulation hole 11c and an eighth circulation hole communicating with the sixth circulation hole 11d. Circulation hole 124. In this embodiment, preferably, the first flow channel groove I is a first water outlet flow channel, the first flow hole 11a is a first water outlet, and the second flow channel groove II is a first water inlet flow channel. The second flow hole 11b is a second water inlet; the third flow channel groove III is a second water outlet; the fifth flow hole 11c is a second water outlet; the fourth flow channel groove IV is a second water inlet. Channel, the sixth flow hole 11d is a second water inlet.

This embodiment is provided with three flow guiding ribs, which have two mutually independent water inlet channels and two mutually independent water outlet channels, so that the effect of composite filtering can be achieved. Similarly, the body 11 may further include a fourth guide rib and a fifth guide rib, and further increase the corresponding water inlet and outlet channels. There is no strict limit on the number of the guide ribs, and it may be based on requirements. Set the corresponding number of diversion ribs, but to ensure that one more water inlet channel is required, the corresponding water outlet channel, as well as the corresponding water inlet and outlet, that is, the water inlet and outlet channels, and the water inlet and outlet To be set in pairs.

Further, in order to strengthen the structural strength of the filter element joint 120, preferably, referring to FIGS. 26 to 28, the first reinforcing rib 115 includes a supporting portion 115a and is far away from the joint from the free end of the supporting portion 115a. A limiting portion 115 b extending in the direction of the portion 12, and the limiting portion 115 b is disposed in close contact with the inner wall of the second flow guiding rib 112. Because the filter element connector 120 is installed on the filter element body 20 and the two cooperate with each other, the limiting portion 115b abuts the filter element body 20, and has a certain limit effect on the filter element body 20, and at the same time, the limiting portion 115b places the outer periphery of the filter element body 20 A gap is left between the second guide rib 112 and the water, so that water can flow in the second flow channel groove II. The first reinforcing rib 115 not only plays a role in enhancing the structural strength of the guide rib, but also has a certain steady-flow effect on the water in the second flow channel groove II, and has a certain buffer for the larger water velocity, further protecting the filter element. The joint 120 makes it more resistant to compression. Among them, eight first ribs 115 are preferably provided, and are evenly disposed in the circumferential direction of the first diversion ribs 111. There is no strict limit on the number of the first ribs 111, and it may also be set as Six, seven, etc.

In another embodiment, referring to FIG. 26 to FIG. 30, a second reinforcing rib 116 is disposed between the second guiding rib 112 and the third guiding rib 113, and the second reinforcing rib 116 is connected to the second guiding rib 112. And the third guiding rib 113, preferably, the second reinforcing rib 116 is convexly extended from the outer wall of the second guiding rib 112 to the inner wall of the third guiding rib 113, which improves the second guiding rib 112 and the first guiding rib 113. The strength of the three guide ribs 113. Further, a reinforcing portion 117 is further provided between an end of the second reinforcing rib 116 near the joint portion 12 and the third guiding rib 113.

Further, referring to FIG. 28 to FIG. 30, a third connecting rib 113 and the outer plate 114 of the main body 11 is provided with a third connecting rib between the third guiding rib 113 and the outer plate 114. The distances from the lower ends of the reinforcing ribs 118, the first reinforcing ribs 115, the second reinforcing ribs 116, and the third reinforcing ribs 118 to the joint portion 12 are sequentially increased. In this way, the installation between the filter element joint 120 and the filter element body 20 is made faster, and at the same time, increasing in order not only makes the appearance more beautiful, but also enhances the structural strength of the filter element joint 120.

In order to seal and connect the filter element joint 120 and the filter element body 20, preferably, the outer plate 114 of the body 11 has a capped end away from the joint portion 12, and an end surface of the capped end is provided with a circumferential extension. Two circular grooves. That is, the outer plate is provided in a double layer, and each layer is provided with an annular groove. The outer plate is provided in a double layer, which enhances its strength and further improves the compression resistance of the filter element joint 120. Further, the two annular grooves are respectively interposed with the inner groove 114a and the outer groove 114b, and the capping ends corresponding to the inner grooves 114a are located below the capping ends corresponding to the outer grooves 114b. That is, the outer plate 114 is provided in two layers, and the extension lengths of the two layers are different, which has a better fitting relationship with the filter element body 20.

Further, the first guide rib 111 and the second guide rib 112, the third guide rib 113, and the outer plate 114 are arranged in a circular ring shape, so that the filter element joint 120 and the filter element body 20 are easier to install when assembled, and the appearance It is more beautiful, and the flow channel groove formed by the guide ribs has a more conductive effect, and reduces the pressure on the body when the water flows into the body.

In another preferred embodiment, please refer to FIG. 26 to FIG. 28, the first guide rib 111, the second guide rib 112, the third guide rib 113, and the lower end of the outer plate 114 reach The distance between the joint parts 12 is increased in order. This arrangement makes the filter element joint 120 and the filter element body 20 easy to install and improve the assembly efficiency.

The present invention also provides a composite filter element 1 including a filter element body 20 and a filter element connector 20, and the filter element body 20 is connected to the filter element connector 120. For a specific connector of the filter element connector 120, please refer to the foregoing embodiment. All the technical solutions of the embodiments have at least all the beneficial effects brought by the technical solutions of the foregoing embodiments. When the composite filter element 1 includes only a pair of water outlets, the composite filter element 1 means that two layers of filter media are arranged in the filter element body. When the composite filter element 1 includes at least two pairs of water inlets and outlets, the composite filter element 1 includes two independently arranged filter media, as shown in FIG. 1, the composite filter element 1 includes independently spaced front filter media. And post filter.

The present invention also proposes a water purification device. The water purification device includes a composite filter element. The specific structure of the composite filter element refers to the above embodiments. Since the water purification device adopts all the technical solutions of all the above embodiments, it has at least the above implementation. All the beneficial effects brought by the technical solutions of the examples are not repeated here one by one.

The above is only a preferred embodiment of the present invention, and therefore does not limit the scope of the patent of the present invention. Any equivalent structural transformation or direct / indirect use of the description and drawings of the present invention under the inventive concept of the present invention All other related technical fields are included in the patent protection scope of the present invention.

Claims (30)

1. A composite filter element for water purification equipment is characterized in that the composite filter element includes:

   Housing with filter cavity inside;

   An isolation component is provided in the filter cavity, and separates the filter cavity into a first filter cavity and a second filter cavity which are independent from each other; the first filter cavity has a water inlet channel, a confluence channel, and A water outlet channel; the housing is provided with a first water inlet connected to the water inlet channel and a first water outlet connected to the water outlet channel; the housing is further provided with the first water inlet A second water inlet and a second water outlet connected with the two filter chambers;

   A first filter material disposed in the water inlet channel and located between the first water inlet and the confluence channel; and

   A second filter material is disposed in the second filter cavity and is located between the second water inlet and the second water outlet.
2. The composite filter element according to claim 1, wherein the first filter material has opposite ends, the first water inlet is disposed near one end of the first filter material, and the inlet of the convergence channel is A water outlet is provided near the other end of the first filter medium.
3. The composite filter element according to claim 2, wherein the isolation component comprises:

   The middle barrel is set in the casing, and the lower end of the middle barrel is provided with a water outlet;

   A combiner barrel, which is located in the casing and is sleeved on the lower end of the middle bucket, the combiner channel is formed with the combiner channel, and the combiner channel communicates with the water outlet; and

   An inner bucket is located in the middle bucket, and the second filter cavity is formed inside the inner bucket;

   Wherein, the interval between the inside of the casing and the outside of the middle bucket constitutes the water inlet channel, and the collecting bucket is located below the inlet channel; the interval between the outside of the inner barrel and the inside of the middle bucket The water outlet channel is formed, and the water outlet is connected to the water outlet channel.
4. The composite filter element according to claim 3, wherein the combiner barrel comprises:

   The barrel body is open at the upper end;

   A plurality of bus bars are provided on the inner peripheral surface of the bucket body along the axial direction of the bucket body, and a plurality of bus bars are provided at intervals along the circumferential direction of the bucket body, between two adjacent bus bars. Forming a sink

   The outer surface of the middle bucket is in contact with the bus bar, and a gap is formed between the lower end face of the middle bucket and the lower end face of the bucket body. The lower end of the sink is in communication with the sink gap to form the sink channel; the upper end of the sink is in communication with the water inlet channel to form the water inlet of the sink channel.
5. The composite filter element according to claim 4, wherein a lower end of the barrel body extends downward with a first interface, and the first interface communicates with the bus gap;

   A second interface extends downward from the lower end of the middle bucket along the water inlet, the second interface is located in the first interface, and the second interface is in communication with the first interface.
6. The composite filter element according to claim 3, wherein the housing comprises:

   The outer barrel is open at the upper end, and the middle barrel and the confluence barrel are both disposed in the outer barrel;

   A filter element joint is sealedly closed on the upper end of the outer tub, and the filter element joint is provided with the first water inlet, the first water outlet, the second water inlet, and the second water outlet.
7. The composite filter element according to claim 6, wherein the first filter medium is arranged in a cylindrical shape and is sleeved on the outer side of the middle tub, and the inner peripheral surface of the first filter medium and the middle There is a gap between the outer peripheral surfaces of the barrel;

   The internal space of the first filter material is in communication with the confluence channel, and the external space of the first filter material is in communication with the first water inlet.
8. The composite filter element according to claim 7, wherein an upper portion of the middle bucket has an annular baffle plate extending outward along its circumferential direction, and the annular baffle plate and an inner peripheral surface of the outer bucket There is a gap between

   The first filter material is located between the annular water blocking plate and the combiner bucket, and an upper end surface of the first filter material is in abutting contact with the annular water plate, and a lower end surface of the first filter material It is in sealing contact with the upper end of the combiner barrel.
9. The composite filter element according to claim 7, wherein a support cylinder frame is further sleeved between the first filter material and the intermediate barrel, and the support cylinder frame is between the support cylinder frame and an outer peripheral surface of the intermediate barrel. With a gap, the support cylinder frame has a plurality of water outlets;

   The first filter material is sleeved on the outside of the support cylinder frame, or the first filter material is wound and disposed on the outside of the support cylinder frame.
10. The composite filter element according to claim 3, wherein the second filter material is arranged in a cylindrical shape, and an internal space of the second filter material is in communication with the second water outlet, and the second filter material The external space is in communication with the second water inlet.
11. The composite filter element according to any one of claims 3 to 10, wherein the lower end of the inner tub is disposed at a distance from the lower end of the middle tub, and a support portion extends downward from the lower end of the inner tub. The support portion is in contact with a lower end of the middle tub.
12. The composite filter element according to claim 11, wherein the support portion includes an annular flange extending downward along a circumferential direction of the inner tub, and the water outlet is located inside the annular flange;

    The inner surface of the lower end of the middle barrel is provided with abutting ribs, and the abutting ribs are in contact with the annular flange, so that the annular flange and the lower end of the middle barrel are defined. A first water-passing gap is formed, and the first water-passing gap communicates with the water-passing port and the water-passing channel.
13. The composite filter element according to any one of claims 3 to 10, wherein the lower end surface of the inner barrel and the lower end surface of the middle barrel are in contact with each other, and the abutting surfaces of the inner barrel and the middle barrel are formed There is a second water passing gap, and the second water passing gap communicates the water passing port and the water outlet channel.
14. The composite filter element according to claim 1, wherein:

    An isolation component is provided in the filter cavity and divides the filter cavity into a first filter cavity and a second filter cavity which are independent from each other. The first filter cavity has a water inlet channel, a confluence channel, and A secondary filtering channel and a water outlet channel; the casing is provided with a first water inlet connected to the water inlet channel and a first water outlet connected to the water outlet channel; A second water inlet and a second water outlet that are in communication with the second filter cavity;

    A first filter material disposed in the water inlet channel and located between the first water inlet and the confluence channel;

    A second filter material disposed in the second filter cavity and located between the second water inlet and the second water outlet; and

    A third filter material is disposed in the secondary filtering channel.
15. The composite filter element according to claim 14, wherein the third filter material is arranged in a cylindrical shape, and an upper end surface of the third filter material is in abutting contact with a lower end surface of the inner tub, and the third filter material is in a cylindrical shape. The lower end surface of the material is in abutting contact with the lower end surface of the middle barrel;

    An internal space of the third filter medium is in communication with the water outlet, and an external space of the third filter medium is in communication with the water outlet channel.
16. The composite filter element according to claim 15, wherein the lower end surface of the inner barrel has an annular flange extending downward along its circumferential direction, the third filter material is located inside the annular flange, and the third There is a gap between the outer peripheral surface of the filter material and the inner peripheral surface of the annular flange;

    An abutment rib is convexly provided on the lower end of the middle barrel, and the abutment rib is in abutment with the annular flange, so that a space is defined between the annular flange and the bottom end of the intermediate barrel. A first water-passing gap, which is used to communicate the inner and outer sides of the annular flange.
17. The composite filter element according to claim 15, wherein the composite filter element further comprises a first end cap and a second end cap, and the first end cap is located on an upper end surface of the third filter material and the inner tub. Between the lower end faces, the first end cover and the upper end face of the third filter medium are in sealing contact;

    The second end cover is disposed between the lower end surface of the third filter medium and the lower end surface of the middle tub, the second end cover is in contact with the lower end surface of the third filter medium, and the second end The cover is provided with a first opening corresponding to the water inlet, and the first opening communicates with the internal space of the water inlet and the third filter medium.
18. The composite filter element according to claim 17, wherein the second end cover extends downward along the edge of the first opening with a first drainage interface, and the first drainage interface is sealed and penetrates the water inlet, In this way, the first drainage interface communicates with the internal space of the convergence channel and the third filter medium.
19. The composite filter element according to claim 14, wherein the third filter material is a granular filter material, and the composite filter element further comprises a filter barrel provided between the inner barrel and the middle barrel, wherein The inside of the filter bucket is filled with the third filter material, and the lower end of the filter bucket is extended with a second drainage interface, and the second drainage interface is sealed and penetrates the water inlet to connect the collecting channel and the filter. Connected inside the barrel;

    A second opening is provided on the outer peripheral surface of the filter bucket near its upper end, and the second opening communicates with the water outlet channel and the inside of the filter bucket.
20. The composite filter element according to claim 19, wherein the lower end of the inner barrel has an annular flange extending downward along its circumferential direction, the filter barrel is located inside the annular flange, and an outer peripheral surface of the filter barrel and the There is a gap between the inner peripheral surfaces of the annular flange;

    An abutment rib is convexly provided on the lower end of the middle barrel, and the abutment rib is in abutment with the annular flange, so that a space is defined between the annular flange and the bottom end of the intermediate barrel. A first water-passing gap, which is used to communicate the inner and outer sides of the annular flange.
21. The composite filter element according to claim 6, wherein the filter element joint comprises:

    A body, the body having a downwardly-opening opening portion for connecting a filter element, the opening portion including a cylindrical cavity defined by an outer plate of the body, and an inner diameter of the cylindrical cavity A first guide rib and a second guide rib are provided in a closed loop direction. The second guide rib is disposed on the outer periphery of the first guide rib. The first guide rib is closed to form a first guide rib. A first-grade channel groove, a first flow hole is provided in the first flow channel groove, a second flow channel groove is formed between the second flow guide rib and the first flow guide rib, and the second flow channel groove A second circulation hole is provided therein, and a first reinforcing rib connecting the first guiding rib and the second guiding rib is provided between the first guiding rib and the second guiding rib;

    A joint portion is located on the body and is opposite to the open portion. A water flow channel is provided inside the joint portion, and the joint portion is provided with a third flow hole communicating with the first flow hole. And a fourth flow hole communicating with the second flow hole.
22. The composite filter element according to claim 21, wherein a third guide rib is further provided radially in the cylindrical cavity, and the third guide rib is disposed on the outer periphery of the second guide rib, so that A third flow channel groove is formed between the second flow guide rib and the third flow guide rib, and a fourth flow channel groove is formed between the third flow guide rib and the outer plate of the body. A fifth flow hole is provided in the third flow channel groove, a sixth flow hole is provided in the fourth flow channel groove, and a seventh flow hole communicating with the fifth flow hole is provided on the joint portion, and An eighth flow hole communicating with the sixth flow hole.
23. The composite filter element according to claim 22, wherein the first reinforcing rib comprises a supporting portion and a limiting portion extending from a free end of the supporting portion in a direction away from the joint portion, the limiting portion The part is arranged close to the inner wall of the second guide rib.
24. The composite filter element according to claim 23, wherein a connection between the second flow guide rib and the third flow guide rib is provided between the second flow guide rib and the third flow guide rib. A second reinforcing rib is further provided with a reinforcing portion between an end of the second reinforcing rib near the joint portion and the third flow guiding rib.
25. The composite filter element according to claim 24, wherein a third reinforcing rib connecting the third guiding rib and the outer plate is provided between the third guiding rib and the outer plate of the body. , The distances from the lower ends of the first stiffeners, the second stiffeners, and the third stiffeners to the joint portion are sequentially increased.
26. The composite filter element according to claim 21, wherein the outer plate of the main body has a capped end away from the joint portion, and an end surface of the capped end is provided with two annular recesses extending along a circumferential direction thereof. groove.
27. The composite filter element according to claim 26, wherein the two annular grooves are an inner groove and an outer groove, respectively, and a capping end corresponding to the inner groove is located at a capping corresponding to the outer groove. Underside of the end.
28. The composite filter element according to claim 22, wherein the first guide rib, the second guide rib, the third guide rib, and the outer plate are all arranged in a circular ring shape.
29. The composite filter element according to claim 21, wherein the distance between the first guide rib, the second guide rib, the third guide rib, the lower end of the outer plate and the joint portion increases in order.
30. A water purification device, comprising a composite filter element according to any one of claims 1-29.

Images