CN215516901U

CN215516901U - Filter core and water purification system

Info

Publication number: CN215516901U
Application number: CN202122169774.5U
Authority: CN
Inventors: 陶林兵
Original assignee: Foshan Micro Midea Filter Manufacturing Co Ltd
Current assignee: Foshan Micro Midea Filter Manufacturing Co Ltd
Priority date: 2021-09-08
Filing date: 2021-09-08
Publication date: 2022-01-14
Anticipated expiration: 2031-09-08

Abstract

The utility model provides a filter element and a water purification system. The filter element comprises a first shell and a second shell, wherein a raw water inlet, a purified water outlet, a purified water inlet and a purified water outlet are formed in the first shell, a first filter body is arranged in the first shell, and a first central pipe is arranged in the first filter body; the second shell is arranged in the first central pipe, a second filter body is also arranged in the second shell, and a second central pipe is arranged in the second filter body; a raw water inlet cavity communicated with the raw water inlet is formed between the first shell and the first filter body; a purified water outlet cavity communicated with the purified water outlet is formed between the first central tube and the second shell; a purified water inlet cavity communicated with the purified water inlet is formed between the second shell and the second filter body, and the second central pipe is communicated with the purified water outlet; the filtering precision of the first filtering body is smaller than that of the second filtering body. Therefore, the utility model solves the problem that the filter element in the prior art is difficult to meet the requirement of multiple water use of users.

Description

Filter core and water purification system

Technical Field

The utility model relates to the technical field of water purification, in particular to a filter element and a water purification system comprising the filter element.

Background

In the prior art, users have various water demands, such as different water quality requirements on domestic water and drinking water. In the prior art, the filtration of domestic water and drinking water is often realized through the mode that sets up multistage filter core. However, this method has the defects of large occupied space, low water yield and the like, and is difficult to satisfy the requirement of multiple water consumption of users. That is, the filter element in the prior art is difficult to meet the requirement of multiple water consumption of users.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a filter element and a water purification system comprising the same, and aims to solve the problem that the filter element in the prior art is difficult to meet the requirement of multiple water use of a user.

In order to solve the above problems, the present invention provides a filter element. The filter element comprises a first shell and a second shell, wherein a raw water inlet, a purified water outlet, a purified water inlet and a purified water outlet are formed in the first shell, a first filter body is arranged in the first shell, and a first central pipe is arranged in the first filter body; the second shell is arranged in the first central pipe, a second filter body is further arranged in the second shell, and a second central pipe is arranged in the second filter body; a raw water inlet cavity communicated with the raw water inlet is formed between the first shell and the first filter body; a purified water outlet cavity communicated with the purified water outlet is formed between the first central tube and the second shell; a purified water inlet cavity communicated with the purified water inlet is formed between the second shell and the second filter body, and the second central pipe is communicated with the purified water outlet; the filtering precision of the first filtering body is smaller than that of the second filtering body.

In an alternative embodiment, the first filter is a PAC filter and the second filter is an RO filter.

In an optional embodiment, the raw water inlet, the purified water outlet, the purified water inlet, and the purified water outlet are all disposed on an upper end surface of the first housing, the first central tube, the second housing, and the second central tube all extend upward and respectively form a first extension tube, a second extension tube, and a third extension tube, and the first extension tube, the second extension tube, and the third extension tube are all connected to an upper end surface of the first housing.

In an optional embodiment, a third casing is arranged in the third extending pipe, a third filter body is arranged in the third casing, a third central pipe communicated with the pure water outlet is arranged in the third filter body, the first casing is further provided with a wastewater outlet, and a wastewater outlet cavity communicated with the wastewater outlet is formed between the third extending pipe and the third casing.

In an alternative embodiment, a limit ring is formed between the first extension pipe and the first central pipe, and the upper end face of the first filter body is connected with the lower end face of the limit ring in a sealing manner.

In an alternative embodiment, the upper end of the second extension pipe is hermetically connected to the upper end surface of the first housing, and the lower end of the second extension pipe is hermetically connected to the second housing.

In an alternative embodiment, the diameter of the third extension pipe is larger than that of the second central pipe, and a connecting plate is arranged between the third extension pipe and the second central pipe, and a waste water through hole is arranged on the connecting plate and is communicated with the waste water outlet cavity.

In an alternative embodiment, the third filter is a carbon rod filter.

In an optional embodiment, a check valve is arranged at the pure water outlet.

The utility model also provides a water purification system, which comprises the filter element.

In an optional embodiment, the water purification system further comprises a booster pump.

In an optional embodiment, the water purification system further comprises a water storage barrel, the filter element is provided with a pure water outlet, and the water storage barrel is communicated with the pure water outlet.

The utility model provides a filter element and a water purification system comprising the same. Specifically, a plurality of filter bodies are integrated in the filter element. Tap water flows in from the raw water inlet and is filtered by the first filter body to obtain purified water, so that the requirement of domestic water of a user is met. And the water purification flows in from the water purification water inlet, and the second filters the filtration of body and other postpositional filtration bodies, obtains the pure water to satisfy the demand of user's drinking water. Therefore, the utility model solves the problem that the filter element in the prior art is difficult to meet the requirement of multiple water use of users.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic view of a filter cartridge according to one embodiment of the present invention;

FIG. 2 is an exploded view of the filter cartridge of FIG. 1;

FIG. 3 is a flow diagram of the filter cartridge of FIG. 1 in a first filtration mode;

FIG. 4 is a flow diagram of the cartridge of FIG. 1 in a second filtration mode;

fig. 5 is an enlarged view of a portion a in fig. 4.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Filter element	11	First filter
12	Second filter	13	Third filter body
				21	First central tube	22	Second center tube
23	Third center tube	31	First shell
				32	Second shell	33	Third casing
41	First extension pipe	42	Second extension pipe
				43	Third extension pipe	51	Sealing element
52	One-way valve	61a	Raw water inlet
				61b	Water outlet for purified water	61c	Water inlet for purified water
61d	Pure water outlet	61e	Waste water outlet
				311	Filter element cover plate	312	Lantern ring
313	Filter element shell body	314	Filter element cover
				315	Decorative strip	316	First lower end cap
317	Spacing ring	321	Second shell body
				322	Second lower end cap	331	Third upper end cover
332	Third shell body	333	Third lower end cap

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, if appearing throughout the text, "and/or" is meant to include three juxtaposed aspects, taking "A and/or B" as an example, including either the A aspect, or the B aspect, or both A and B satisfied aspects. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The present invention provides a filter cartridge 100. The filter element 100 comprises a first shell 31 and a second shell 32, wherein the first shell 31 is provided with a raw water inlet 61a, a purified water outlet 61b, a purified water inlet 61c and a purified water outlet 61d, a first filter body 11 is arranged in the first shell 31, and a first central tube 21 is arranged in the first filter body 11; the second shell 32 is arranged in the first central tube 21, the second filter 12 is further arranged in the second shell 32, and the second central tube 22 is arranged in the second filter 12; a raw water inlet cavity communicated with the raw water inlet 61a is formed between the first shell 31 and the first filter body 11; a purified water outlet cavity communicated with the purified water outlet 61b is formed between the first central tube 21 and the second shell 32; a purified water inlet cavity communicated with the purified water inlet 61c is formed between the second shell 32 and the second filter body 12, and the second central tube 22 is communicated with the purified water outlet 61 d; the filtering accuracy of the first filter body 11 is smaller than that of the second filter body 12.

According to the above structure, the filter cartridge 100 has a first filtering mode and a second filtering mode to satisfy two different filtering requirements of users. The filter cartridge 100 is applied to a water purification system, and in an embodiment, the water purification system further includes a booster pump. And the purified water outlet 61b and the purified water outlet 61d are respectively connected with a purified water tap and a purified water tap. When the user needs the domestic water, the purified water faucet is turned on, the booster pump is not started, the raw water flows into the raw water inlet cavity from the raw water inlet 61a, is filtered into the purified water after being filtered by the first filter body 11, then flows into the purified water outlet cavity from the central hole of the first central tube 21, and flows out of the purified water outlet 61b to the purified water faucet. The requirement of the user for domestic water is met.

And when the user has the demand of drinking water, the pure water tap is opened, and the booster pump is started. The purified water flows into the purified water inlet cavity from the purified water inlet 61c after being pressurized by the booster pump, and flows into the second central tube 22 through the central hole of the second central tube 22 after being pressurized and filtered by the booster pump, entering the second filter body 12 and being pressurized and filtered. And after a series of subsequent filtering processes, the water flows into the pure water faucet from the pure water outlet 61d, so that the requirement of drinking water of a user is met.

The filter cartridge 100 has a shutdown state in addition to the first and second filtration modes. Further, a water storage tank may be further provided in the water purification system using the filter cartridge 100. When the filter cartridge 100 is in a shutdown state, the booster pump is not immediately shut down. But stores the pure water in the water storage barrel. So set up, when the user opened pure water tap once more, the pure water in the water storage bucket flowed out earlier. So, the user need not wait for a long time after opening pure water tap to improve user experience.

The water quality and water quantity requirements of users on domestic water and drinking water are different. Therefore, the requirements of the first filter 11 and the second filter 12 used in the present invention are different in the filtration accuracy and the filtration area. Specifically, the quality of drinking water is required to be higher than that of domestic water, that is, the filtration accuracy of the second filter 12 is higher than that of the first filter 11. In one embodiment, the first filter 11 is a PAC filter and the second filter 12 is an RO filter. Specifically, the PAC filter is formed by winding a PP film, carbon fiber, and non-woven fabric around the first center tube 21. And the RO filter body is an RO membrane, and the RO membrane sheet, the filter cloth and the filter screen are rolled on the second central tube 22 through glue. The filtration accuracy of PAC filters is around 5 μm, i.e. particles above 5 μm in size are intercepted. And the filtering precision of the RO filter body can reach 0.0001 mu m. Therefore, the PAC filter body and the RO filter body can adapt to different water quality requirements.

Further, the first filter 11 is disposed outside the second filter 12. Namely, the raw water is filtered layer by layer from outside to inside. This is because the water demand of consumers for domestic and potable water also varies. Compared with drinking water, domestic water generally requires a larger amount of water in order to meet the requirements of flushing, cleaning and the like. Therefore, the first filter 11 is disposed outside the second filter 12. Compared with the scheme of filtering from inside to outside, the filter element 10 can obtain larger domestic water volume under the same volume. Specifically, the amount of water in the PAC filter is related to its volume, surface area, and the surface of the PAC filter is used to retain foreign particles in the raw water. The larger the surface area of the water-retaining agent is, more particles can be retained, and therefore the water quantity and the service life are correspondingly increased.

The purified water is filtered by the RO filtering body, and the water quality can meet the drinking requirement. But some off-taste may be present. To further enhance the user experience. The purified water is filtered by the second filtering body 12 and then by the third filtering body 13 to improve the taste. In an alternative embodiment, the third filter 13 is a carbon rod filter.

But the waterway is convenient to be arranged. In an optional embodiment, the raw water inlet 61a, the purified water outlet 61b, the purified water inlet 61c, and the purified water outlet 61d are disposed on an upper end surface of the first housing 31. Therefore, in order to form a space for accommodating the third filter 13, the first center tube 21, the second housing 32, and the second center tube 22 all extend upward and respectively form a first extension tube 41, a second extension tube 42, and a third extension tube 43, and the first extension tube 41, the second extension tube 42, and the third extension tube 43 are all connected to the upper end surface of the first housing 31.

The first extension pipe 41, the second extension pipe 42, and the third extension pipe 43 may be separate parts, or may be integrally provided with the housing or the center pipe of the filter cartridge 100. Notably, to prevent water leakage. The sealing connection between the individual parts is of great importance. In one embodiment, the parts may be connected by a seal 51, such as a sealing ring. In another embodiment, the parts are joined by welding, such as in the form of spin-melt welding, to achieve a sealed connection.

In an alternative embodiment, a third casing 33 is disposed inside the third extending pipe 43, a third filter 13 is disposed inside the third casing 33, a third central pipe 23 communicating with the pure water outlet 61d is disposed inside the third filter 13, the first casing 31 is further provided with a waste water outlet 61e, and a waste water outlet chamber communicating with the waste water outlet 61e is formed between the third extending pipe 43 and the third casing 33.

Due to the characteristics of the RO filter, in addition to the required pure water obtained during the filtration process. Concentrated water is also produced. Specifically, the purified water flowing from the purified water inlet chamber is filtered by the second filter 12 to generate concentrated water and purified water. Pure water enters the second center tube 22 through the center hole of the second center tube 22. And flows out from the pure water outlet 61d after the subsequent treatment. And the concentrated water, namely the waste water flows into the waste water outlet cavity from the second filter body 12 and flows out from the waste water outlet 61 e.

During the assembly of the filter cartridge 100, the partial or whole structure of each housing, each central tube, and each extension tube forms the upper end cap or the lower end cap of the first filter body 11, the second filter body 12, and the third filter body 13. Thereby forming a complete waterway.

Specifically, the first housing 31 includes a cartridge body 313 and a cartridge 100 cover. The cartridge 100 cover is connected to the cartridge body 313 by spin-on welding. The filter element 100 is further provided with a decorative strip 315, and the decorative strip 315 is connected with the filter element 100 in an interference fit manner. The first housing 31 further includes a first lower end cap 316, and the first lower end cap 316 is connected to the lower end surface of the first filter body 11 through a hot melt adhesive. In an alternative embodiment, a limiting ring 317 is formed between the first extension pipe 41 and the first central pipe 21, and the upper end surface of the first filter body 11 is connected with the lower end surface of the limiting ring 317 in a sealing manner. Namely, the structure of the limiting ring 317 forms the upper end cover of the first filter body 11.

And the second housing 32 includes a second shell and a second lower end cap. The second lower end cover is connected with the lower end face of the second filter body 12 through hot melt adhesive. In an alternative embodiment, the upper end of the second extension pipe 42 is hermetically connected to the upper end surface of the first housing 31, and the lower end of the second extension pipe 42 is hermetically connected to the second housing 32. In an alternative embodiment, the diameter of the third extension pipe 43 is larger than that of the second central pipe 22, and a connecting plate is arranged between the third extension pipe 43 and the second central pipe 22, and the connecting plate is provided with a waste water through hole communicated with the waste water outlet cavity. Except the waste water through holes, the other connecting plates are connected with the second filter body 12 in a sealing way. In this way, the connecting plate functions as an upper end cap for the second filter body 12.

In an alternative embodiment, a check valve 52 is disposed at the pure water outlet 61 d. When the filter element 100 is assembled on the whole water path of a water purifier and the like, the ejector rod in the one-way valve 52 is jacked up, so that the filter element 100 is communicated with the whole water path. When the filter element 100 needs to be disassembled, the push rod in the one-way valve 52 is reset, and the sealing element 51 is arranged on the push rod, so that the water flow in the filter element 100 is prevented from leaking to the outside. And the user experience is improved. To assemble the one-way valve 52, the cartridge 100 is further provided with a cartridge cover 311. The filter element cover plate 311 is welded and fixed to the first housing body by ultrasonic welding, so that the check valve 52 and the corresponding seal ring are fixed to the filter element housing body 313. The check valve 52 and the sealing ring are prevented from being separated in the pressure bearing process of the filter element 100. In one embodiment, a collar 312 is also disposed on the cartridge body 313.

The present invention also proposes a water purification system comprising a filter cartridge 100 as described above. The specific structure of the filter cartridge 100 is described with reference to the above embodiments. Since the filter element 100 adopts all technical solutions of all the embodiments, at least all the beneficial effects brought by the technical solutions of the embodiments are achieved, and are not described in detail herein.

The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A filter cartridge, comprising:

the device comprises a first shell, a second shell and a third shell, wherein a raw water inlet, a purified water outlet, a purified water inlet and a purified water outlet are formed in the first shell, a first filter body is arranged in the first shell, and a first central pipe is arranged in the first filter body;

the second shell is arranged in the first central pipe, a second filter body is further arranged in the second shell, and a second central pipe is arranged in the second filter body;

a raw water inlet cavity communicated with the raw water inlet is formed between the first shell and the first filter body; a purified water outlet cavity communicated with the purified water outlet is formed between the first central tube and the second shell; a purified water inlet cavity communicated with the purified water inlet is formed between the second shell and the second filter body, and the second central pipe is communicated with the purified water outlet;

the filtering precision of the first filtering body is smaller than that of the second filtering body.

2. The filter cartridge of claim 1, wherein the first filter body is a PAC filter body and the second filter body is an RO filter body.

3. The filter element of claim 1, wherein the raw water inlet, the purified water outlet, the purified water inlet and the purified water outlet are disposed on an upper end surface of the first housing, the first central tube, the second housing and the second central tube extend upward and respectively form a first extension tube, a second extension tube and a third extension tube, and the first extension tube, the second extension tube and the third extension tube are all connected to the upper end surface of the first housing.

4. The filter element of claim 3, wherein a third housing is arranged in the third extension pipe, a third filter body is arranged in the third housing, a third central pipe communicated with the pure water outlet is arranged in the third filter body, the first housing is further provided with a waste water outlet, and a waste water outlet cavity communicated with the waste water outlet is formed between the third extension pipe and the third housing.

5. The filter element of claim 4, wherein the diameter of the third extension pipe is larger than the diameter of the second center pipe, and a connecting plate is arranged between the third extension pipe and the second center pipe, and is provided with a waste water through hole which is communicated with the waste water outlet cavity.

6. The filter cartridge of claim 5, wherein the third filter body is a carbon rod filter body.

7. The filter element of claim 1, wherein a one-way valve is arranged at the pure water outlet.

8. A water purification system, comprising a cartridge according to any one of claims 1 to 7.

9. The water purification system of claim 8, further comprising a booster pump.

10. The water purification system of claim 9, further comprising a water storage tank, wherein the filter element is provided with a pure water outlet, and the water storage tank is communicated with the pure water outlet.