Composite filter element, filter bottle and water purifier

Abstract

The utility model relates to the technical field of filter elements, in particular to a composite filter element, a filter bottle and a water purifier, the composite filter element comprises an upper end cover, a lower end cover, a central pipe, a PAC filter layer and a filter element shell, the central pipe is made of hollow PP melt-blown cotton and is arranged between the upper end cover and the lower end cover, the filter element shell is an activated carbon shell with a filtering function, and the PAC filter layer is arranged between the upper end cover and the lower end cover. The filter element shell circumferentially wraps the center pipe, the PAC filter layer is made of activated carbon powder and is arranged between the center pipe and the filter element shell in a filling mode, a water outlet communicated with the center pipe is formed in the upper end cover, and a sealing piece in butt joint with the water purifier is arranged at the water outlet. And the lower end cover hermetically covers the bottom ends of the central pipe, the PAC filter layer and the filter element shell. According to the utility model, the PP melt-blown cotton is arranged in the center, so that not only can a better supporting effect be achieved, but also'black water 'can be prevented, and the activated carbon powder is selected for filling, so that water can be filtered more finely after coarse filtration is carried out on the activated carbon shell.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter core technical field especially, relate to a kind of composite filter core, filter bottle and water purifier. BACKGROUND

[0002] As a kind of to the impurity in water body is purified, softening, filtering equipment, usually used in water purifier inside, by using the filter material filled in the inside of filter core, realize the step of water filtration, now widely used in the purification process of water body.

[0003] The filter material inside the filter core of the prior art is usually in a cylindrical structure. In use, the filter effect of the filter material filled inside the filter core varies with different filter materials. The quality of the filter core determines the water filtration efficiency. In addition, during long-term use of the filter material, impurities filtered from the water body will accumulate inside, not only causing internal blockage, but also seriously affecting the service life of the filter core, resulting in high replacement cost of the filter core.

[0004] On the other hand, most of the composite filter cores used in water purification are sintered activated carbon filter layers. The single sintered activated carbon filter layer not only causes filter core blockage and flow reduction during water purification, but also cannot adjust the composite filter core according to different water quality, and cannot solve the problem of filter core blockage. SUMMARY

[0005] To solve the problems in the above background art, the present application provides a composite filter core, a filter bottle and a water purifier, which can change the problem of easy blockage of the current sintered activated carbon layer composite filter core, reduce the high cost problem of the existing activated carbon fiber as a filter core, and match different filter core combinations according to the SDI value of different water quality to meet the purification needs of different water quality.

[0006] To achieve the above-mentioned purpose, the technical scheme provided by the utility model is as follows:

[0007] A composite filter core, comprising an upper end cover, a lower end cover, a center tube, a PAC filter layer and a filter core shell, wherein the center tube is a hollow PP melt-blown cotton, arranged between the upper end cover and the lower end cover, the filter core shell is an activated carbon shell with filtering effect, circumferentially wrapped outside the center tube, the PAC filter layer is activated carbon powder, filled between the center tube and the filter core shell, a water outlet is formed in the upper end cover and communicates with the center tube, the water outlet is provided with a sealing element for docking with a water purifier, and the lower end cover hermetically covers the bottom end of the center tube, the PAC filter layer and the filter core shell. Tap water flows through the filter core shell, the PAC filter layer and the center tube in sequence from the circumferential side of the composite filter core, and then flows out from the water outlet after filtration.

[0008] Compared with the prior art, the utility model discloses setting PP melt -blown cotton as the center tube in the center, can not only play better support effect, and compared with the existing plastic center tube can prevent " black water " to active carbon powder and carry out interlayer, and selects active carbon powder filling as PAC filter layer, can be more fine after active carbon shell carries out rough filtration, and the active carbon powder of different performance can be replaced and is suitable for different water quality, and the sealing element set up at the opening of upper end cover can be more convenient when replacing the core, and does not produce the phenomenon of waterway shunting.

[0009] Preferably, the filter core shell is made of activated carbon and high molecular PE. Compared with the existing sintered activated carbon filter layer, the filter core shell made of activated carbon and high molecular PE can effectively reduce the cost and perform preliminary filtration.

[0010] Specifically, the activated carbon powder is high-iodine-value activated carbon powder with an iodine value content greater than 900 mg / g. Using high-iodine-value activated carbon powder as the internal filler instead of sintered activated carbon as the main adsorbent can not only reduce the cost of the filter core, but also enable the activated carbon powder to rapidly spread to the area to be treated due to its fine granular structure, quickly adsorb pollutants, and achieve the purification goal.

[0011] Further, the top of the activated carbon powder is filled with wet carbon fibers, and the filling length proportion of the wet carbon fibers accounts for 20-50% of the activated carbon powder. For areas with a high SDI value, the adsorption capacity of the composite filter core can be improved by filling a certain proportion of wet carbon fibers at the top of the activated carbon powder layer.

[0012] Further, the water outlet protrudes from the upper end cover, the sealing element is a sealing ring arranged on the outer circumference of the water outlet, and the sealing ring is provided with at least one above.

[0013] Further, the water outlet is recessed in the upper end cover, and the sealing element is a gasket arranged in the water outlet.

[0014] Further, the filter core shell is circumferentially provided with folded PP cotton within the upper end cover and the lower end cover.

[0015] Further, the lower end cover is provided with a boss integrated with the lower end cover in the middle, and the boss is inserted into the bottom of the center tube.

[0016] A filter bottle includes a shell and any of the above composite filter cores arranged in the shell.

[0017] A water purifier includes a water purifier body and the above filter bottle arranged on the body.

[0018] The utility model has the beneficial effects that:

[0019] 1. Setting PP meltblown cotton as the central tube not only provides better support, but also, compared to existing plastic central tubes, can separate the activated carbon powder to prevent the release of "black water".

[0020] 2. By selecting activated carbon powder with high iodine value as the filler for the PAC filter layer, the water can be filtered more finely after the activated carbon shell performs coarse filtration. Furthermore, different activated carbon powders with different properties can be used to adapt to different water qualities.

[0021] 3. The sealing element at the opening of the upper cover makes it easier to replace the core and prevents water flow diversion.

[0022] 4. Folded PP cotton is placed on the outer layer of the filter element shell, which can act as a barrier to intercept large particles of impurities in advance and improve the service life of the composite filter element. Attached Figure Description

[0023] Figure 1 This is a cross-sectional view of the composite filter element in Embodiment 1 of this utility model;

[0024] Figure 2 This is a cross-sectional view of the composite filter element in Embodiment 2 of this utility model;

[0025] Figure 3 This is a cross-sectional view of the composite filter element in Embodiment 3 of this utility model;

[0026] Figure 4 This is a cross-sectional view of the composite filter element in Embodiment 4 of this utility model;

[0027] Figure 5 This is a cross-sectional view of the composite filter element in Embodiment 5 of this utility model.

[0028] In the diagram, 1-upper cap, 101-outlet, 2-lower cap, 201-protrusion, 3-center tube, 4-PAC filter layer, 5-filter cartridge shell, 6-gasket, 7-sealing ring, 8-wet carbon fiber, and 9-folded PP cotton. Detailed Implementation

[0029] The technical solutions of this utility model will now be clearly and completely described with reference to the accompanying drawings. The components of this utility model, typically described and shown in the drawings herein, can be arranged and designed in various different configurations. Therefore, the following detailed description of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0030] Embodiment 1

[0031] Referring to Figure 1 The composite filter element includes an upper end cover 1 and a lower end cover 2, and a center tube 3, a PAC filter layer 4 and a filter element shell 5 are sequentially arranged from inside to outside between the upper end cover 1 and the lower end cover 2. An outlet 101 is formed in the upper end cover 1, and a gasket 6 is arranged on the outlet 101 to facilitate replacement of the filter element and prevent water from being diverted. A boss 201 is arranged in the middle of the lower end cover 2 and is integrally formed with the lower end cover 2. The boss 201 is inserted and fixed with the bottom of the center tube 3 to relatively seal the bottom of the center tube 3 and prevent water leakage.

[0032] The top of the center tube 3 communicates with the outlet 101 of the upper end cover 1, and the bottom of the center tube 3 is inserted and fixed with the boss 201 of the lower end cover 2. The center tube 3 is a hollow PP melt-blown cotton. Compared with the prior art of using a perforated plastic tube as a center tube, the center tube 3 can better support other filter layers, and can prevent the activated carbon powder from being discharged as “black water” compared with the existing plastic center tube. The PAC filter layer 4 is filled with high-iodine-value activated carbon powder having an iodine value content greater than 900 mg / g between the center tube 3 and the filter element shell 5. The high-iodine-value activated carbon powder is used as an internal filler to replace sintered activated carbon as the main adsorbent material, which not only reduces the cost of the filter element but also enables the activated carbon powder to rapidly spread to the area to be treated due to its fine granular structure, quickly adsorb pollutants and achieve the purification goal. The filter element shell 5 is made of activated carbon and high-molecular PE. Compared with the existing sintered activated carbon filter layer, the filter element shell prepared from activated carbon and high-molecular PE can effectively reduce the cost and perform preliminary filtration. Thus, tap water flows through the filter element shell 5, the PAC filter layer 4 and the center tube 3 in sequence from the periphery of the composite filter element, and is discharged from the outlet 101 of the upper end cover 1 after being filtered.

[0033] Most filter elements on the market currently use CTO carbon rods as filter materials. The composite filter element of the present application can effectively adsorb COD, chloroform, carbon tetrachloride and other substances by using a dry carbon fiber shell and activated carbon powder as a combination. By adding carbon powder to the dry activated carbon as a composite group, not only can the residual chlorine be completely adsorbed, but also COD and other substances can be effectively adsorbed, thereby reducing the cost while ensuring the removal capacity of pollutants.

[0034] Embodiment 2

[0035] Referring to Figure 2The composite filter element sectional view of the utility model, compared with example 1, the water outlet 101 of this embodiment is integrally arranged protruding from the upper end cover 1, two sealing rings 7 are arranged at equal intervals on the outer circumference of the water outlet 101, and the lower end of the water outlet 101 is inserted into the center tube 3 for communication and fixation, so as to meet the needs of leakage prevention and shunt prevention of different filter bottle interfaces.

[0036] Example 3

[0037] Please refer to Figure 3 The composite filter element sectional view of the utility model, compared with example 2, in order to improve the adsorption capacity of the composite filter element material, remove most of the suspended solids and particulate matters in water, and reduce the SDI value, the PAC filter layer 4 in this embodiment is composed of two parts, in addition to the high-iodine-value activated carbon powder in example 2, wet carbon fiber 8 is filled and arranged on the top of the activated carbon powder, and the filling length proportion of the wet carbon fiber 8 accounts for 20-50% of the activated carbon powder; in areas with low SDI value, the wet carbon fiber 8 filter material can be replaced by CTO sintered carbon rod / dry carbon fiber filter material, so that the filter element combination can be adjusted according to different SDI values to solve the problem of easy clogging of the filter element.

[0038] Example 4

[0039] Please refer to Figure 4 The composite filter element sectional view of the utility model, compared with example 3, in order to further improve the pre-filtering effect of the composite filter element, the folded PP cotton 9 is arranged on the outer periphery of the filter element shell 5 in a circumferential direction, and the distribution range of the folded PP cotton 9 is within the upper end cover 1 and the lower end cover 2, and the folded PP cotton 9 arranged on the outermost layer can play a barrier role for the filter element shell 5, intercept large particles in advance, and improve the service life of the composite filter element.

[0040] Example 5

[0041] Please refer to Figure 5 The composite filter element sectional view of the utility model, compared with example 4, the upper end cover 1 of the composite filter element of the utility model is the same as that in example 1, but does not include the filled wet carbon fiber 8 or CTO sintered carbon rod / dry carbon fiber filter material in example 4. Through comparison of test data, the combination of the carbon fiber layer and the activated carbon powder of the filter element shell 5 has a residual chlorine removal rate of up to 99.53%, and the adsorption effect is obviously improved compared with single CTO sintered activated carbon.

[0042] Example 6

[0043] A filter bottle comprises a shell of the filter bottle and any one of the above-mentioned composite filter elements arranged in the shell.

[0044] Example 7

[0045] A water purifier comprises a main body and a filter bottle as described in embodiment 6 arranged on the main body.

[0046] It is apparent for a person skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and not restrictive, the scope of the present application being defined by the appended claims rather than the above description, and it is intended to embrace all changes and modifications that fall within the meaning and scope of the equivalent elements of the claims. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used. Further, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the present specification is described in this way only for the sake of clarity, a person skilled in the art should consider the present specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by a person skilled in the art.

Claims

1. A composite filter cartridge, characterized by, The composite filter element comprises an upper end cover, a lower end cover, a center tube, a PAC filter layer and a filter element shell, wherein the center tube is a hollow PP melt-blown cotton, arranged between the upper end cover and the lower end cover, the filter element shell is an activated carbon shell with filtering effect, circumferentially wrapped outside the center tube, the PAC filter layer is activated carbon powder, filled and arranged between the center tube and the filter element shell, the upper end cover is provided with a water outlet communicating with the center tube, the water outlet is provided with a sealing element for docking with a water purifier, and the lower end cover tightly covers the bottom end of the center tube, the PAC filter layer and the filter element shell.

2. The composite filter cartridge of claim 1, wherein, The material of the filter element shell is prepared from activated carbon and high molecular PE.

3. The composite filter cartridge of claim 1, wherein, The activated carbon powder is high-iodine-value activated carbon powder, and the iodine value content is greater than 900 mg / g.

4. The composite filter cartridge of claim 1, wherein, The top of the activated carbon powder is filled with wet carbon fibers, and the filling length proportion of the wet carbon fibers accounts for 20-50% of the activated carbon powder.

5. The composite filter cartridge of claim 1, wherein, The water outlet is arranged protruding from the upper end cover, and the sealing element is a sealing ring arranged on the outer circumference of the water outlet, and the sealing ring is provided with at least one above.

6. The composite filter cartridge of claim 1, wherein, The upper end cover is concave to form the water outlet, and the sealing element is a gasket arranged in the water outlet.

7. The composite filter cartridge of claim 1 wherein, The filter element shell is circumferentially provided with folded PP cotton within the upper end cover and the lower end cover.

8. The composite filter cartridge of claim 1, wherein, The lower end cover is provided with a boss integrated with the lower end cover in the middle, and the boss is inserted with the bottom of the center tube.

9. A filter bottle characterized in that, The shell comprises a filter bottle and the composite filter element as claimed in any one of claims 1-8 arranged in the shell.

10. A water purifier characterized by comprising: The water purifier comprises a main body and the filter bottle as claimed in claim 9 arranged on the main body.

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