CN210710976U - A kind of water purifier and water purifier composite filter element - Google Patents

Abstract

The utility model discloses a composite filter element for a water purifier, which comprises an inner shell and a coarse filter assembly arranged on the outer periphery of the inner shell, and also includes a mouthfeel filter assembly and a fine filter assembly arranged in the inner casing, and the fine filter assembly is arranged in the mouthfeel filter assembly The two ends of the inner shell are respectively provided with coarse filtration water outlet holes for draining the coarse filtration water to the fine filtration assembly, so that the fine filtration water filtered by the fine filtration assembly flows from the two ends of the mouthfeel filtration assembly into the mouthfeel filtration assembly. The mouthfeel filter assembly is provided with a water purification pipe for draining the purified water filtered by the mouthfeel filter assembly to the outside of the inner shell. The increase in the number of fine filtration components and the ability of the mouthfeel filtration component to achieve bidirectional filtration increases the volume of finely filtered water that can be filtered by the mouthfeel filtration component per unit time, so the filtration speed is high. The utility model discloses a water purifier comprising a composite filter element of a water purifier.

Description

A kind of water purifier and water purifier composite filter element

technical field

The utility model relates to the technical field of purification, in particular to a composite filter element of a water purifier. The utility model also relates to a water purifier comprising the above-mentioned composite filter element.

Background technique

The improvement of consumers' health awareness makes water purifiers widely used in life and work. Considering the convenience of filter element replacement and the compactness of the filter element structure, the existing water purifier filter elements mostly use composite filter elements. Filter cartridges with various functions complement each other's advantages in order to obtain drinking water with a higher degree of purification.

Referring to FIG. 1, the existing water purifier composite filter element includes an outer cylinder body 01, an inner cylinder body 02, a pre-filter element 03, a membrane filter element 04 and a rear filter element 05, wherein the pre-filter element 03 is provided in the outer cylinder body 01 Between the inner cylinder 02 and the inner cylinder 02, the membrane filter element 04 is arranged in the inner cylinder 02, and a part of the rear filter element 05 is arranged in the inner cylinder 02. The key point is that the inner cylinder 02 is provided with only one membrane filter element 04, and The membrane filter element 04 is only provided at one end of the rear filter element 05 . Specifically, the raw water is filtered by the pre-filter element 03, and the primary filtered water is drained to the outside of the composite filter element. In the rear filter element 05, drinking water with a higher degree of purification is obtained after being filtered three times by the rear filter element 05.

However, there are many deficiencies in the existing composite filter elements of water purifiers. For example, the membrane filter 3 is only arranged at one end of the rear filter element 05, so that the secondary filtered water filtered by the membrane filter element 04 can only flow into the rear filter element 05 from one end of the rear filter element 05. Obviously, the number of membrane filter elements 04 is relatively high. less, resulting in slower filtration speed; further, the secondary filtered water can only flow into the rear filter element 05 in one direction, so that the volume of the secondary filtered water that can be filtered by the rear filter element 05 per unit time is relatively small, so that the filtration The speed is further slowed down.

Therefore, how to improve the filtering speed of the existing water purifier composite filter element is a technical problem to be solved urgently by those skilled in the art.

Utility model content

In view of this, the purpose of this utility model is to provide a water purifier and a composite filter element thereof, both ends of the mouthfeel filter assembly are provided with fine filter assemblies, the number of fine filter assemblies is increased, and the finely filtered water can be filtered from the two ends of the mouthfeel filter assembly. The end flows into the mouthfeel filter assembly, so the filtration rate is high.

Its specific plan is as follows:

The utility model provides a composite filter element for a water purifier, which comprises an inner shell and a coarse filter assembly arranged on the outer periphery of the inner shell and used for filtering out coarsely filtered water, and also includes a mouthfeel filter assembly and a fine filter assembly arranged in the inner shell. The filter assembly is arranged at both ends of the mouthfeel filter assembly, so that the finely filtered water filtered by the fine filter assembly flows into the mouthfeel filter assembly from both ends of the mouthfeel filter assembly, and the two ends of the inner shell are respectively provided with the coarse filtered water to drain to the fine filter assembly. The coarse filter water outlet hole of the mouthfeel filter assembly is provided with a water purification pipe for draining the purified water filtered by the mouthfeel filter assembly to the outside of the inner shell.

Preferably, the mouthfeel filter assembly includes a mouthfeel filter element and a mouthfeel abutting end cap located at one end of the mouthfeel filter element close to the water purification pipe, the mouthfeel abutting end cover having an outer peripheral surface that is in contact with the mouthfeel water collecting hole provided in the center of the mouthfeel filter assembly and The limit groove of the mouthfeel end cover whose inner side is opposed to the water purification pipe is provided with a water purification drainage hole for connecting the mouthfeel water collecting hole and the water purification pipe.

Preferably, the mouthfeel filter assembly further includes a mouthfeel filter shell covering the outer periphery of the mouthfeel filter element, and both ends of the mouthfeel filter shell are provided with fine filtration accommodating grooves for defining the fine filter assembly.

Preferably, both ends of the mouthfeel filter shell are provided with finely filtered water outlet holes for finely filtered water to flow out, and between the mouthfeel filter end cap and the mouthfeel filter shell is provided with a finely filtered water outlet that communicates with the finely filtered water outlet holes. There is a fine filter water pipe slot flow channel connected with the fine filter water general flow channel between the fine filter water collection pipe installed with the water purification pipe and the water purification pipe and between the water purification pipe and the fine filter water outlet hole.

Preferably, it also includes a casing disposed on the outer periphery of the coarse filter assembly, and between the guide end of the casing and the inner casing, two ends are respectively arranged against the guide end and the inner casing for guiding raw water, purified water and waste water to independently flow through The deflector end cap on the deflector end.

Preferably, the diversion end is provided with mutually independent raw water inlet holes, clean water outlet holes and waste water outlet holes, a raw water flow channel is arranged between the outer casing and the coarse filter assembly, and between the inner casing and the fine filter assembly and between the inner casing and the inner casing. The mouthfeel filter components are provided with interconnected waste water flow channels, and between the diversion end cover and the diversion end are provided an annular raw water holding cavity for connecting the raw water flow channel and the raw water inlet hole, and an annular raw water accommodating cavity for connecting the waste water flow channel and the waste water. The annular waste water accommodating cavity of the water outlet, the annular raw water accommodating cavity and the annular waste water accommodating cavity are coaxially and independently arranged, and the end of the water purification pipe away from the mouthfeel filter assembly is inserted into the purified water outlet hole.

Preferably, an annular coarsely filtered water accommodating cavity communicated with the coarsely filtered water outlet hole is provided between the inner shell and the guide end cover, and the annular waste water accommodating cavity and the annular coarsely filtered water accommodating cavity are coaxially and independently arranged.

Preferably, one end of the guide end cover close to the coarse filter assembly is provided with a coarse filter accommodating groove for accommodating the coarse filter assembly, and also includes a limit end cover arranged opposite to the guide end cover, and the limit end cover has the same width as the coarse filter assembly. Coarse filter limiting grooves which are opposite to each other and fine filtering limiting grooves which are offset with the fine filtering components.

Preferably, the guide end cap and the inner shell are of a one-piece structure.

The utility model also provides a water purifier, comprising a raw water tank, a waste water tank and any one of the above-mentioned composite filter elements of the water purifier, wherein the raw water tank and the waste water tank are respectively connected with the composite filter element of the water purifier. Compared with the background technology, the composite filter element of the water purifier provided by the present invention includes a coarse filter assembly, a fine filter assembly and a mouthfeel filter assembly. In the fine filter assembly at both ends of the filter assembly, the fine filtered water filtered by the fine filter assembly flows into the taste filter assembly from both ends of the taste filter assembly, and the purified water filtered by the taste filter assembly flows out from the water purification pipe.

Obviously, the increase of the fine filter assembly increases the volume of the coarsely filtered water that can be filtered per unit time, and the filtration speed increases significantly; further, due to the improvement of the inner shell structure and the increase of the water purification pipe, the two ends of the taste filter assembly are increased. Both can be equipped with fine filter components, so that the fine filtered water can flow into the taste filter components from both ends of the taste filter components, so that the taste filter components can achieve two-way filtration, thereby increasing the volume of fine filtered water that can be filtered by the taste filter components per unit time. , the filtration speed has naturally increased. Therefore, the filtration speed of the composite filter element of the water purifier provided by the present invention is relatively high.

The water purifier including the composite filter element provided by the present invention has the same beneficial effects, which will not be repeated here.

Description of drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description It is only an embodiment of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained according to the provided drawings without creative efforts.

1 is a cross-sectional view of an existing composite filter element;

2 is a structural diagram of a water purifier composite filter element provided by a specific embodiment of the present utility model;

Fig. 3 is the sectional view of Fig. 2;

Fig. 4 is another sectional view of Fig. 2;

Fig. 5 is a partial enlarged view of E in Fig. 4;

Fig. 6 is the structural diagram of the inner shell in Fig. 2;

Fig. 7 is another structural diagram of the inner shell 2 in Fig. 2;

Fig. 8 is the front view of Fig. 6;

Fig. 9 is the sectional view along A-A in Fig. 8;

Fig. 10 is a C-C sectional view in Fig. 8;

Fig. 11 is the bottom view of Fig. 6;

Figure 12 is a sectional view along the line B-B in Figure 11;

Fig. 13 is the sectional view in the direction D-D in Fig. 11;

Figure 14 is a cross-sectional view of the mouthfeel filter assembly in Figure 2;

FIG. 15 is a cross-sectional view of the limiting end cap in FIG. 2 .

The reference numbers are as follows:

The outer cylinder body 01, the inner cylinder body 02, the front filter element 03, the membrane filter element 04 and the rear filter element 05;

Outer shell 1, inner shell 2, coarse filter assembly 3, fine filter assembly 4, mouthfeel filter assembly 5, water purification pipe 6, diversion end cap 7 and limit end cap 8;

the housing body 101 and the shielding end cover 102;

Raw water inlet hole 111, raw water flow channel 112, annular raw water baffle 113, annular raw water accommodating cavity 114 and raw water abutting protrusion 115;

Waste water outlet hole 121, waste water flow channel 122, annular waste water baffle 123, annular waste water accommodating cavity 124 and waste water connection hole 125;

The water purification water outlet hole 131, the water purification pipe abutting protrusion 132 and the annular coarsely filtered water accommodating cavity 133;

Roughly filtered water outlet hole 21 and annular waste water abutting plate 22;

The coarse filter element 31, the coarse filter water collection pipe 32, the coarse filter water drainage hole 33 and the coarse filter water flow channel 34;

Fine filtration water collecting hole 41, fine filtration filter element 42, fine filtration water collecting pipe 43, fine filtration water diversion hole 44, fine filtration end cap 45 and coarse filtration water diversion hole 46;

The mouthfeel water collecting hole 51, the mouthfeel filter element 52, the mouthfeel filter shell 53, the mouthfeel filter end cover 54, the fine filtration water outlet hole 55, the fine filtration water general flow channel 56, the fine filtration holding tank 57 and the fine filtration water pipe slit flow channel 58 ;

The mouthfeel abutting end cap 541, the mouthfeel end cap limiting groove 542 and the water purification drainage hole 543;

The annular raw water abutting plate 71 and the coarse filter accommodating tank 72;

Coarse filter limit slot 81 and fine filter limit slot 82.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

In order to make those skilled in the art better understand the solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

Please refer to FIGS. 2 to 15. FIG. 2 is a structural diagram of a water purifier composite filter element provided by a specific embodiment of the present invention; FIG. 3 is a cross-sectional view of FIG. 2; FIG. 4 is another cross-sectional view of FIG. 2; It is a partial enlarged view of E in Fig. 4; Fig. 6 is a structural diagram of the inner shell in Fig. 2; Fig. 7 is another structural diagram of the inner shell 2 in Fig. 2; Fig. 8 is a front view of Fig. 6; Fig. 9 is a diagram Figure 10 is a cross-sectional view of C-C in Figure 8; Figure 11 is a bottom view of Figure 6; Figure 12 is a cross-sectional view of B-B in Figure 11; Figure 13 is a cross-sectional view of D-D in Figure 11; Figure 14 is a cross-sectional view of the mouthfeel filter assembly in FIG. 2 ; FIG. 15 is a cross-sectional view of the limiting end cap in FIG. 2 .

The embodiment of the present utility model discloses a composite filter element for a water purifier, which includes three functional filter elements: a coarse filter element 3, a fine filter element 4 and a mouthfeel filter element 5, wherein the coarse filter element 3 can be used to filter out rust and rust in raw water. Sediment and other impurities can also be used to adsorb different colors, odors, residual chlorine and other organic substances in the raw water, so that the raw water becomes coarsely filtered water after being filtered by the coarse filter element 3. The fine filter assembly 4 can be used to intercept bacteria, viruses, heavy metals, etc. contained in the coarsely filtered water, so that the coarsely filtered water is filtered by the fine filter assembly 4 into finely filtered water. The mouthfeel filter assembly 5 can be activated carbon, which can be used to remove volatile organic compounds, residual chlorine and can be used to retain trace amounts of calcium, silicic acid, carbonic acid, etc. The mouthfeel filter assembly 5 becomes purified water for users to use after being filtered. The types of the coarse filter assembly 3 , the fine filter assembly 4 and the mouthfeel filter assembly 5 can be determined according to actual requirements and the prior art, and are not specifically limited here.

The present invention also includes an inner shell 2. It should be noted that, compared with the existing composite filter element, the present invention makes corresponding improvements to the structure of the inner shell 2. The coarsely filtered water is drained to the coarsely filtered water outlet hole 21 of the fine filter assembly 4, and the fine filter assembly 4 and the mouthfeel filter assembly 5 are both arranged in the cavity of the inner shell 2 to prepare for the mouthfeel filter assembly 5 to realize the bidirectional filtration function . In addition, according to the position of the coarsely filtered water outlet hole 21, the coarsely filtered water outlet hole 21 includes a top coarsely filtered water outlet hole arranged at the top end of the inner shell 2 and a bottom end coarsely filtered water outlet hole arranged at the bottom end of the inner shell 2, so as to attach Fig. 3 is an example, the structure of the top coarsely filtered water outlet hole is different from that of the bottom coarsely filtered water outlet hole, and the top coarsely filtered water outlet hole is specifically a circular through hole passing through the inner shell 2 along the axial direction of the inner shell 2, The bottom end coarsely filtered water outlet hole includes at least one, each bottom end coarsely filtered water outlet hole is L-shaped, and the two ends of each bottom end coarsely filtered water outlet hole can be used to communicate with the outer peripheral surface of the inner shell 2 and the device respectively. The fine filter assembly 4 at the bottom of the mouthfeel filter assembly 5. Specifically, the bottom end of the inner shell 2 is provided with four evenly distributed bottom coarsely filtered water outlet holes. Of course, the structure and number of the bottom coarsely filtered water outlet holes are not limited to this.

The inner arm of the inner shell 2 is provided with a plurality of fine filtration limiting protrusions arranged in an annular shape, each fine filtration limiting protrusion abuts against the mouthfeel filter assembly 5 so as to limit the mouthfeel filter assembly 5 .

Further, in order to facilitate the replacement of the fine filter assembly 4 and the mouthfeel filter assembly 5, the present invention also sets the inner shell 2 into a separate type, including an upper inner shell and a lower inner shell, wherein the upper inner shell and the lower inner shell are Use interference or threaded connections, or other types of detachable connection structures. It should be further explained that a sealing ring can be added at the connection between the upper inner shell and the lower inner shell to ensure that the inner shell 2 has good sealing performance.

The fine filter assembly 4 is arranged at both ends of the mouthfeel filter assembly 5 , so that the finely filtered water filtered by the fine filter assembly 4 flows into the mouthfeel filter assembly 5 from both ends of the mouthfeel filter assembly 5 . Preferably, each end of the mouthfeel filter assembly 5 is provided with a set of fine filter assemblies 4, of course, the number of the fine filter assemblies 4 provided at both ends of the mouthfeel filter assembly 5 is not limited herein. Compared with the existing composite filter element, obviously, the number of fine filter components 4 is increased, so that the volume of coarsely filtered water that can be filtered per unit time is increased, and the filtering speed is significantly increased.

In order to enable the purified water filtered by the mouthfeel filter assembly 5 to be discharged smoothly, the mouthfeel filter assembly 5 is provided with a water purification pipe 6, and the water purification pipe 6 passes through the fine filter assembly 4 from one end of the mouthfeel filter assembly 5, and the water purification pipe One end of 6 is communicated with the mouthfeel water collecting hole 51 provided in the center of the mouthfeel filter assembly 5. The mouthfeel water collecting hole 51 can be used to store the purified water filtered by the mouthfeel filter assembly 5, so that the water purification pipe 6 can connect the mouthfeel water collecting hole 51. The purified water inside is drained to the outside of the inner shell 2 to facilitate the discharge of purified water. It should be noted here that the water purification pipe 6 may be provided at one end of the mouthfeel filter assembly 5, or may be disposed at both ends of the mouthfeel filter assembly 5, which is specifically set according to the implementation situation. In this specific embodiment, the water purification pipe 6 is preferably arranged at the bottom end of the mouthfeel filter assembly 5, so that the purified water can quickly flow out of the water purification pipe 6 under the action of gravity, which is beneficial to further improve the filtration speed. Of course, a fine filter tube for discharging fine filtered water can also be inserted into the center of the fine filter assembly 4 .

The coarsely filtered water filtered by the coarse filter assembly 3 flows into the fine filter assemblies 4 located at both ends of the mouthfeel filter assembly 5 from the coarsely filtered water outlet holes 21 provided at both ends of the inner shell 2 respectively. The filtered water flows into the mouthfeel filter assembly 5 from both ends of the mouthfeel filter assembly 5, and the purified water filtered by the mouthfeel filter assembly 5 flows out from the water purification pipe 6, thereby realizing triple filtration of the raw water.

It should be noted that, for the present invention, the increase of the filtration speed is not a simple superposition of the fine filter assembly 4. Considering the factors such as the three purification functions and the ease of disassembly, the fine filter in the present invention is not simply superimposed. The addition of the components 4 makes the structure of the inner shell 2 change accordingly, and at the same time, a water purification pipe 6 is added.

Due to the improvement of the structure of the inner shell 2 and the increase of the water purification pipe 6, both ends of the mouthfeel filter assembly 5 can be provided with the fine filter assembly 4, so that the finely filtered water can flow into the mouthfeel filter assembly 5 from both ends of the mouthfeel filter assembly 5. , so that the mouthfeel filter assembly 5 realizes two-way filtration, so that the volume of finely filtered water that can be filtered by the mouthfeel filter assembly 5 per unit time increases, and the filtration speed naturally increases. Therefore, the filtration speed of the composite filter element of the water purifier provided by the present invention is relatively high.

Preferably, the mouthfeel filter assembly 5 includes a mouthfeel filter element 52 and a mouthfeel filter shell 53 covering the outer periphery of the mouthfeel filter element 52. Considering the convenience of replacing the mouthfeel filter element 52, the mouthfeel filter shell 53 is a split structure, that is, the mouthfeel filter shell 53 It includes an upper mouthfeel filter shell and a lower mouthfeel filter shell, wherein the upper mouthfeel filter shell and the lower mouthfeel filter shell are connected by interference connection or screw connection, and of course other types of detachable connections are also possible. Similarly, a sealing ring may also be added at the connection between the upper mouthfeel filter shell and the lower mouthfeel filter shell, so as to ensure that the mouthfeel filter shell 53 has good sealing performance. The mouthfeel filter element 52 is preferably in a cylindrical shape, and the mouthfeel filter element 52 has a mouthfeel water collecting hole 51 axially penetrating through the mouthfeel filter element 52 in the center. It becomes purified water, and the purified water is stored in the mouthfeel water collecting hole 51 .

Both ends of the mouthfeel filter shell 53 are provided with mouthfeel transition pipes, and the two mouthfeel transition pipes are inserted into the fine filtration water collecting holes 41 provided in the center of the adjacent fine filter assembly 4, and the mouthfeel transition pipe center is provided with a filter along the mouthfeel. The finely filtered water outlet hole 55 extending axially of the shell 53, the finely filtered water outlet hole 55 is communicated with the finely filtered water collection hole 41, so that the finely filtered water outlet hole 55 guides the finely filtered water flow inlet in the finely filtered water collection hole 41 inside the filter housing 53 . In addition, it should be added that the taste transition pipe can also be used to define the fine filter assembly 4 to limit the radial movement of the fine filter assembly 4 relative to the taste filter assembly 5 .

The mouthfeel filter assembly 5 includes mouthfeel filter end caps 54 disposed in the mouthfeel filter shell 53 and located at both ends of the mouthfeel filter element 52. A general flow channel 56 for fine filtration water is provided between the mouthfeel filter end cover 54 and the mouthfeel filter shell 53. The water general flow channel 56 is communicated with the finely filtered water outlet hole 55 , so that the finely filtered water flowing out of the finely filtered water outlet hole 55 flows into the mouthfeel filter element 52 from the outer periphery of the mouthfeel filter element 52 . Specifically, the general flow channel 56 for finely filtered water is the gap between the outer peripheral surface of the mouthfeel filter end cover 54 and the inner side surface of the mouthfeel filter shell 53 . In order to ensure that the general flow channel 56 of the finely filtered water is unobstructed, a number of finely filtered water abutting protrusions that abut against the inner side of the mouthfeel filter shell 53 can be added on the outer periphery of the mouthfeel filter end cover 54 .

It should be noted that the length of the mouthfeel filter end cap 54 should not be too long to ensure that the mouthfeel filter element 52 has a larger exposed area, which is convenient for the mouthfeel filter element 52 to quickly absorb finely filtered water, and is beneficial to improve the filtration speed. Of course, a number of mouthfeel abutting protrusions that are against the end face of the mouthfeel filter element 52 can also be added on the inner side of the mouthfeel filter end cap 54, so that the finely filtered water can flow into the mouthfeel filter element 52 from the end face of the mouthfeel filter element 52, thereby making the mouthfeel filter Both the outer peripheral surface and the end surface of the filter element 52 can be used to absorb finely filtered water, thereby increasing the finely filtered water that the mouthfeel filter element 52 can absorb per unit time, which is beneficial to improve the filtration speed.

Considering that one end of the water purification pipe 6 is inserted into the mouthfeel water collecting hole 51 and the other end passes through one of the fine filter components 4, in order to prevent the purified water in the mouthfeel water collecting hole 51 and the finely filtered water of the fine filtering water collecting hole 41 In case of cross-contamination, preferably, the mouthfeel filter end cap 54 includes a mouthfeel abutting end cap 541, the mouthfeel abutting end cap 541 has a mouthfeel end cap limiting groove 542, and the mouthfeel end cap limiting groove 542 is formed by one end of the mouthfeel water collecting hole 51. Extending to the inside of the mouthfeel water collecting hole 51, the outer peripheral surface of the mouthfeel end cap limiting groove 542 is in contact with the mouthfeel water collecting hole 51, which is convenient to limit the mouthfeel filter assembly 5 and prevent the mouthfeel filter element 52 from moving radially; The inner side surface of the position groove 542 is in contact with the water purification pipe 6 to limit the radial movement of the water purification pipe 6 . In order to prevent the purified water from overflowing from the gap between the limit groove 542 of the mouthfeel end cover and the water purification pipe 6, the end of the water purification pipe 6 inserted into the limit groove 542 of the mouthfeel end cover is provided with a sealing ring. An annular sealing groove is arranged at the end of the seal, and the sealing ring is installed in the annular sealing groove.

Further, the mouthfeel end cap limiting groove 542 is provided with a water purification drainage hole 543, so that the water purification drainage hole 543 communicates with the mouthfeel water collecting hole 51 and the water purification pipe 6, and the water purification drainage hole 543 is specifically provided in the mouthfeel end cover limit The circular through hole at the bottom of the groove 542 and extending in the axial direction is, of course, not limited to this.

The number of the mouthfeel abutting end caps 541 is related to the water purification pipe 6 , and is not specifically limited here.

In order to further limit the fine filter assembly 4, both ends of the mouthfeel filter shell 53 are provided with fine filter accommodating grooves 57. Specifically, the top and bottom ends of the mouthfeel filter shell 53 are provided with annular mouthfeel limit plates. The annular groove between the inner side of the mouthpiece and the outer peripheral surface of the mouthfeel transition pipe is the fine filter accommodating groove 57 . The cross section of the fine filter accommodating groove 57 is the same as that of the fine filter assembly 4 , and preferably, the fine filter accommodating groove 57 is an annular groove. Of course, it is not limited to this. It should be noted that the annular mouthfeel limiting plate extends along the axial direction of the mouthfeel filter shell 53, and the height of the annular mouthfeel limiting plate should not be too high to ensure that the fine filter assembly 4 has a sufficiently large absorption area.

It should be noted that the fine filter assembly 4 includes two groups, and is based on the current view of accompanying drawing 3. The fine filter assembly 4 located at the top of the mouthfeel filter assembly 5 is the upper fine filter assembly, and the fine filter assembly located at the bottom of the sense filter assembly. 4 is the lower fine filter assembly.

Preferably, the fine filter assembly 4 includes a fine filter element 42 and a fine filter water collection pipe 43 passing through the fine filter element 42, and the fine filter element 42 and the fine filter water collection pipe 43 are coaxially arranged. The fine filtration water collection pipe 43 is provided with a number of fine filtered water drainage holes 44 for discharging fine filtered water. . The fine filter element 42 and the fine filter water collecting pipe 43 are all cylindrical, and a plurality of fine filtered water drainage holes 44 are evenly distributed.

The fine filter assembly 4 also includes a fine filter end cover 45 disposed at one end of the fine filter filter element 42 away from the mouthfeel filter assembly 5, and the fine filter end cover 45 is provided with a coarse filter water guide hole 46 that communicates with the coarse filter water outlet hole 21, The rough filtered water guide hole 46 is specifically a through hole provided on the end face of the fine filter end cover 45 and extending in the axial direction. It should be noted that the two fine filter end caps 45 are in clearance fit with the inner wall of the inner shell 2 .

Preferably, based on the current view of FIG. 3 , the fine filter end cover 45 includes an upper fine filter end cover arranged between the top end of the upper fine filter assembly and the top end of the inner shell 2 , and an upper fine filter end cover arranged between the bottom end of the lower fine filter assembly and the inner shell 2 lower fine filter end caps between the bottom ends. Likewise, the length of the fine filter end cover 45 should not be too long, so as to ensure that the fine filter assembly 4 has a larger water absorption area.

In order to make the fine filtered water flow smoothly into the mouthfeel filter assembly 5, fine filtration is provided between the fine filtration water collecting pipe 43 and the water purifying pipe 6 and between the water purifying pipe 6 and the fine filtered water outlet hole 55. The water pipe slit flow channel 58, the fine filtered water pipe slit flow channel 58 is communicated with the fine filtered water general flow channel 56. It should be noted that the outer periphery of the mouthfeel filter tube and the fine filter water collecting pipe 43 are provided with a sealing member, specifically, the outer circumference of the mouthfeel filter tube is provided with an annular sealing groove, and the sealing member is specifically a sealing ring installed in the annular sealing groove to prevent Finely filtered water is mixed with wastewater.

Preferably, the coarse filter assembly 3 includes a coarse filter filter element 31 and a coarse filter water collection pipe 32 passing through the coarse filter element 31 , and the coarse filter element 31 and the coarse filter water collection pipe 32 are coaxially arranged. The coarsely filtered water collecting pipe 32 is provided with a plurality of coarsely filtered water drainage holes 33 for discharging the coarsely filtered water. Several rough filtered water drainage holes 33 are evenly distributed. A coarsely filtered water flow channel 34 communicated with the coarsely filtered water outlet hole 21 is provided between the coarsely filtered water collection pipe 32 and the inner casing, so that the coarsely filtered water flow channel 34 can circulate the coarsely filtered water.

Further preferably, the present invention also includes a casing 1 arranged on the outer periphery of the coarse filter assembly 3, and one end of the casing 1 is provided with a raw water inlet hole 111, a clean water outlet hole 131 and a waste water outlet hole 121, which are independent of each other, and have a raw water inlet hole 121. One end of the hole 111 , the clean water outlet hole 131 and the waste water outlet hole 121 is called the guide end of the casing 1 . In order to facilitate the disassembly of each filter element, the casing 1 includes a casing body 101 and a shielding end cover 102 arranged opposite the diversion end. The casing body 101 and the shielding end cover 102 are connected by interference or screw connection. Of course, other types of detachable connections are also possible. structure.

In order to prevent cross-contamination of raw water, purified water and waste water, a guide end cover 7 is provided between the guide end and the inner shell 2 . In order to improve the convenience of disassembly and assembly and the sealing performance, the key improvement points of the present invention are to change the structure of the inner shell 2 , improve the structure of the outer shell 1 and add a guide end cover 7 .

In order to realize the smooth circulation of raw water, a raw water flow channel 112 for raw water to flow into the rough filter assembly 3 is provided between the casing 1 and the rough filter assembly 3, and a raw water flow channel 112 is provided between the diversion end cover 7 and the diversion end for communicating with the raw water. An annular raw water accommodating cavity 114 with the raw water inlet hole 111 . Specifically, the diversion end is provided with an annular raw water baffle 113, and the annular raw water accommodating cavity 114 is surrounded by the outer peripheral surface of the annular raw water baffle 113 and the inner side wall of the diversion end. The free end of the annular raw water baffle 113 abuts against the diversion end cover 7, and the side of the diversion end plate close to the diversion end is provided with an annular raw water abutment plate 71 whose outer peripheral surface abuts the inner side of the annular raw water baffle 113. A seal is provided between the plate 113 and the annular raw water abutting plate 71 , so that the annular raw water accommodating cavity 114 forms a closed cavity that communicates with the raw water flow channel 112 . Further, the outer peripheral surface of the diversion end cover 7 is provided with a plurality of raw water abutting protrusions 115 that abut against the inner side wall of the diversion end, so that there is a connection between the outer peripheral surface of the diversion end cover 7 and the inner wall of the diversion end for communication. The raw water connection hole of the raw water flow channel 112 and the annular raw water accommodating cavity 114 .

In order to discharge the waste water smoothly, between the inner shell 2 and the fine filter assembly 4 and between the inner shell 2 and the mouthfeel filter assembly 5, there are mutually connected waste water flow channels 122, and between the guide end cover 7 and the guide end is provided with The annular waste water accommodating cavity 124 is formed so that the annular waste water accommodating cavity 124 communicates with the waste water flow channel 122 and the waste water outlet hole 121 . Specifically, the diversion end is provided with an annular waste water baffle 123, the annular waste water baffle 123 is preferably arranged in the annular raw water baffle 113, and the annular waste water baffle 123 is coaxially arranged with the annular raw water baffle 113, and the annular waste water accommodating cavity 124 It is surrounded by the inner surface of the annular raw water abutting plate 71 and the outer peripheral surface of the annular waste water baffle 123 . The side of the guide end cover 7 close to the guide end is provided with an annular waste water abutting plate 22 whose outer peripheral surface abuts the inner side of the annular raw water baffle 113 , and a seal is provided between the annular waste water baffle 123 and the annular waste water abutting plate 22 Therefore, the annular waste water accommodating cavity 124 forms a closed cavity that communicates with the waste water flow channel 122 .

It should be noted that the end of the annular waste water abutting plate 22 away from the guide end is provided with an annular bearing plate, the annular bearing plate is disc-shaped, and the outer diameter of the annular bearing plate is smaller than the inner diameter of the inner shell 2, so that the annular bearing plate and the inner Between the inner side walls of the shell 2 there is a waste water connection hole 125 for connecting the annular waste water accommodating chamber 124 and the waste water flow channel 122 . One end of the annular support plate away from the annular waste water abutting plate 22 is fixed with a lower end cap limiting plate for defining the lower fine filter end cap. Wherein, the coarsely filtered water outlet holes 21 and the waste water connection holes 125 are alternately arranged, and the outlet of the coarsely filtered water outlet holes 21 is arranged on the inner side surface of the annular bearing plate.

In order to make the mouthfeel filter assembly 5 realize two-way water inflow, a ring-shaped coarsely filtered water holding cavity 133 connected with the coarsely filtered water outlet hole 21 is provided between the inner shell 2 and the guide end cover 7; The water pipe abuts against the protrusion 132, and the center of the water purification pipe abuts against the protrusion 132 is provided with a water purification outlet hole 131. A sealing member is provided between the outer peripheral surface of the pipe 6 and the inner surface of the water outlet hole 131 . Specifically, the outer peripheral surface of the water purification pipe 6 is provided with an annular sealing groove, and the sealing member is installed in the annular sealing groove. Wherein, the abutting protrusion 132 of the water purification pipe is arranged in the annular waste water baffle 123, and the abutting protrusion 132 of the water purification pipe is coaxially arranged with the annular waste water baffle 123, and the annular coarsely filtered water accommodating chamber 133 is abutted by the annular waste water The inner surface of the plate 22 is surrounded by the outer peripheral surface of the abutting protrusion 132 of the water purification pipe, so that the annular coarse filtered water accommodating chamber 133 forms a closed type that communicates with the coarse filtered water guide hole 46 provided in the lower fine filter end cap. cavity.

Therefore, the annular raw water accommodating cavity 114, the annular waste water accommodating cavity 124 and the annular coarsely filtered water accommodating cavity 133 are nested with each other and arranged independently, which is convenient for disassembly and assembly and makes the structure more compact.

In addition, the end of the guide end cover 7 close to the coarse filter assembly 3 is provided with a coarse filter accommodating groove 72 for accommodating the coarse filter assembly 3 . Specifically, an inner annular bearing plate and an outer annular bearing plate are provided at one end of the diversion end cover 7 close to the coarse filter assembly 3 , the inner annular bearing plate and the outer annular bearing plate are coaxially arranged, and the outer peripheral surface of the inner annular bearing plate and the outer annular bearing plate are arranged coaxially. The annular groove between the inner sides of the carrier plate is the coarse filter accommodating groove 72 .

In order to limit the coarse filter assembly 3, the present invention also includes a limit end cover 8 arranged opposite to the diversion end cover 7. The limit end cover 8 has a receiving groove for accommodating part of the inner shell 2, The coarse filter limiting groove 81 that is opposed to the coarse filter assembly 3, the coarse filter limit groove 81 and the coarse filter accommodating groove 72 are arranged opposite to each other, and the two are respectively in contact with the two ends of the coarse filter assembly 3, thereby restricting the coarse filter assembly 3 to move . Correspondingly, one end of the limit end cover 8 close to the coarse filter assembly 3 is provided with an inner annular limit plate and an outer annular limit plate, the inner annular limit plate and the outer annular limit plate are coaxially arranged, and the inner annular limit plate The annular groove between the outer side surface and the inner side surface of the outer annular limiting plate is the coarse filter limiting groove 81 .

The limit end cover 8 also has a fine filter limit groove 82 that is opposed to the fine filter assembly 4, so that the limit end cover 8 defines the position of the upper fine filter assembly. Specifically, the center of the limit end cover 8 is provided with an annular fine filter. The limit plate, the annular fine filter limit plate and the limit end cover 8 are coaxially arranged. The inner side of the annular fine filtration limiting plate is in contact with the outer peripheral surface of the fine filtration water collecting pipe 43 , and a seal is provided between the inner side of the annular fine filtration limiting plate and the outer circumferential surface of the fine filtration water collecting pipe 43 . It should be noted that the water purification pipe abutting protrusion 132 is also provided with a fine filter limiting groove 82 abutting against the fine filter assembly 4 so as to limit the position of the fine filter assembly 4 away from the limit end cover 8 .

In order to facilitate disassembly and assembly, the diversion end cover 7 and the inner shell 2 are of an integral structure, and the inner shell 2 and the diversion end cap 7 can be firmly connected as a whole by means of interference connection or welding.

The working principle of the composite filter element of the water purifier provided by the utility model is as follows:

The raw water flows into the raw water flow channel 112 through the raw water inlet hole 111. After the raw water in the raw water flow channel 112 is filtered by the coarse filter assembly 3, the filtered coarsely filtered water is discharged from the coarsely filtered water drainage hole 33 to the coarsely filtered water flow channel 34. The coarsely filtered water in the filtered water channel 34 flows into the two groups of fine filter assemblies 4 from the coarsely filtered water outlet holes 21 provided at both ends of the inner shell 2 respectively, and the finely filtered water filtered by the finely filtered assembly 4 flows from the finely filtered water drainage holes. 22 is discharged into the fine filtration water collecting hole 41, and the fine filtration water in the fine filtration water collecting hole 41 flows into the fine filtration water general flow channel 56 and the fine filtration water from the fine filtration water outlet holes 55 set at both ends of the mouthfeel filter shell 53. The water pipe slits the flow channel 58, the fine filtered water flows into the mouthfeel filter element 52 from both ends of the mouthfeel filter element 5, and the purified water filtered by the mouthfeel filter element 52 flows into the mouthfeel water collecting hole 51, and the clean water in the mouthfeel water collecting hole 51 flows into the mouthfeel water collecting hole 51. The water flows through the water purification pipe 6 to the purified water outlet hole 131, and the purified water outlet hole 131 discharges purified water;

The waste water filtered by the fine filter assembly 4 flows into the annular waste water containing cavity 124 through the waste water flow channel 122 and is discharged from the waste water outlet hole 121 .

A water purifier includes a raw water tank for holding raw water, a waste water tank for holding waste water, and the above-mentioned composite filter element of the water purifier. The raw water tank and the waste water tank are respectively connected to the composite filter element of the water purifier.

The water purifier and its composite filter element provided by the present invention have been introduced in detail above. In this paper, specific examples are used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only used to help understand the present invention. The novel method and its core idea; at the same time, for those skilled in the art, according to the idea of the present utility model, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be It is understood as a limitation of the present invention.

Claims (10)

1. A composite filter element for a water purifier, characterized in that it comprises an inner shell (2) and a coarse filter assembly (3) arranged on the outer periphery of the inner shell (2) and used to filter out coarsely filtered water, and further comprising a The mouthfeel filter assembly (5) and the fine filter assembly (4) in the inner shell (2), the fine filter assembly (4) is provided at both ends of the mouthfeel filter assembly (5) to allow the fine filter The finely filtered water filtered by the component (4) flows into the mouthfeel filter assembly (5) from both ends of the mouthfeel filter assembly (5), and the two ends of the inner shell (2) are respectively provided with the coarse filter The water is drained to the coarsely filtered water outlet hole (21) of the fine filter assembly (4), and the taste filter assembly (5) is provided with the clean water filtered by the taste filter assembly (5) to drain to the The water purification pipe (6) outside the inner shell (2). 2. The water purifier composite filter element according to claim 1, characterized in that, the mouthfeel filter assembly (5) comprises a mouthfeel filter element (52) and a mouthfeel filter element (52) located near the water purification A mouthfeel abutting end cap (541) at one end of the pipe (6), the mouthfeel abutting end cover (541) having an outer peripheral surface abutting against a mouthfeel water collecting hole (51) provided in the center of the mouthfeel filter assembly (5) and A mouthfeel end cap limiting groove (542) whose inner side is abutted against the water purification pipe (6), and the mouthfeel end cap limiting groove (542) is provided with a mouthpiece for connecting the mouthfeel water collecting hole (51) with the The water purification drain hole (543) of the water purification pipe (6). 3. The composite filter element for a water purifier according to claim 2, wherein the mouthfeel filter assembly (5) further comprises a mouthfeel filter shell (53) covering the outer periphery of the mouthfeel filter element (52), and the mouthfeel filter Both ends of the mouthfeel filter shell (53) are provided with fine filter accommodating grooves (57) for defining the fine filter assembly (4). 4. The water purifier composite filter element according to claim 3, characterized in that, both ends of the mouthfeel filter shell (53) are provided with finely filtered water outlet holes (55) for the finely filtered water to flow out, Between the mouthfeel filter end cover (54) and the mouthfeel filter shell (53), a general flow channel (56) for finely filtered water that communicates with the finely filtered water outlet hole (55) is provided, and the purified water is installed Between the fine filtration water collecting pipe (43) of the pipe (6) and the water purification pipe (6) and between the water purification pipe (6) and the fine filtered water outlet hole (55), there are provided with all the The fine filtered water pipe slit flow channel (58) communicated with the fine filtered water general flow channel (56). 5. The composite filter element for a water purifier according to any one of claims 1 to 4, characterized in that it further comprises a casing (1) disposed on the outer periphery of the coarse filter assembly (3), wherein the outer casing (1) has a Between the guide end and the inner casing (2), two ends are respectively arranged against the guide end and the inner casing (2), and are used to guide raw water, purified water and waste water to independently flow through the guide end caps (7). 6 . The composite filter element of a water purifier according to claim 5 , wherein the diversion end is provided with a raw water inlet hole ( 111 ), a clean water outlet hole ( 131 ) and a waste water outlet hole ( 121 ) that are independent of each other. ), a raw water channel (112) is provided between the outer shell (1) and the coarse filter assembly (3), and between the inner shell (2) and the fine filter assembly (4) and the inner A waste water flow channel (122) that communicates with each other is provided between the shell (2) and the mouthfeel filter assembly (5), and between the guide end cover (7) and the guide end An annular raw water accommodating cavity (114) between the raw water flow channel (112) and the raw water inlet hole (111) and an annular waste water accommodating cavity for communicating the waste water flow channel (122) and the waste water outlet hole (121) (124), the annular raw water accommodating chamber (114) and the annular waste water accommodating chamber (124) are coaxially and independently arranged, and the end of the water purification pipe (6) away from the mouthfeel filter assembly (5) is inserted in the purified water outlet hole (131). 7. The water purifier composite filter element according to claim 6, characterized in that, between the inner shell (2) and the guide end cover (7), there is a water outlet hole (21) connected to the coarsely filtered water ) connected to the annular coarse filtered water accommodating cavity (133), the annular waste water accommodating cavity (124) and the annular coarse filtration water accommodating cavity (133) are coaxially and independently arranged. 8 . The water purifier composite filter element according to claim 7 , characterized in that, one end of the guide end cover ( 7 ) close to the coarse filter assembly ( 3 ) is provided with a space for accommodating the coarse filter assembly ( 3 ). ), further comprising a limit end cover (8) disposed opposite to the diversion end cover (7), the limit end cover (8) having the same function as the coarse filter assembly ( 3) Coarse filter limiting grooves (81) that are in contact with each other and fine filtering limiting grooves (82) that are opposed to the fine filter assembly (4). 9 . The composite filter element for a water purifier according to claim 8 , wherein the guide end cover ( 7 ) and the inner shell ( 2 ) are of an integral structure. 10 . 10. A water purifier, characterized in that it comprises a raw water tank, a waste water tank and the composite filter element of the water purifier according to any one of claims 1 to 9, wherein the raw water tank and the waste water tank are respectively connected with the purifier. The water heater composite filter element is connected.

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