CN220834506U - Composite filter element and water purifying equipment - Google Patents

Abstract

The utility model discloses a composite filter element and water purifying equipment, wherein the composite filter element comprises a filter flask, a filter flask cover and a filter flask cover; the filter bottle cover is covered with the filter bottle, the filter bottle cover is provided with an avoidance port, the filter core cover is arranged at the avoidance port, and the filter core cover is detachably connected with the filter bottle cover; the filter cover is provided with a plurality of first water flow passages, the filter cover is provided with a plurality of second water flow passages, at least part of the outlet ends of the first water flow passages are in sealing connection with the inlet ends of the second water flow passages, and the area of the outlet ends of the first water flow passages is smaller than that of the inlet ends of the second water flow passages. The composite filter element can solve the technical problem that the flow passage opening on the filter element cover is easily misplaced in the vertical direction after being butted with the flow passage opening on the filter element cover, and the water outlet effect of the composite filter element is affected.

Description

Composite filter element and water purifying equipment

Technical Field

The utility model relates to the technical field of water purifying equipment, in particular to a composite filter element and water purifying equipment.

Background

The integrated compounding of the filter element of the existing water purifying equipment is a development trend of the water purifying equipment in the future, the front filter element, the reverse osmosis filter element and the rear filter element are integrated into one filter unit, the reduction of the whole size of the water purifying equipment can be realized, the occupied space of the water purifying equipment is reduced, and the miniaturization of the water purifying equipment is realized. Because the service lives of the pre-filter element and the post-filter element are generally lower than those of the reverse osmosis filter element, the pre-filter element and the post-filter element are required to be replaced frequently, and therefore, the pre-filter element and the post-filter element are arranged to be detachable relative to the whole composite filter element by the prior part of water purifying equipment so as to be convenient for replacing the pre-filter element and the post-filter element independently.

The filter cover of the composite filter element comprises a filter cover and a filter element cover, wherein the filter cover is arranged to be detachable relative to the filter cover, and the filter element cover is detached, so that the functions of replacing the front filter element and the rear filter element are realized. Because the filter element cover is detachable relative to the filter element cover, and the filter element cover is arranged relative to the front filter element and the rear filter element, the filter element cover is required to be provided with corresponding flow passages so as to be in butt joint with the flow passages on the filter element cover to form a complete water flow path. However, because the action force of the water pressure received in the filter flask can shake up and down when the front filter element and the rear filter element are used, the runner opening on the filter flask cover and the runner opening on the filter element cover are staggered in the up-down direction, and the two openings cannot be completely abutted, so that the water outlet effect of the composite filter element is affected.

Disclosure of utility model

The utility model mainly aims to provide a composite filter element, and aims to solve the technical problem that after a runner port on a filter element cover is in butt joint with a runner port on the filter element cover, the runner port is easy to misplace in the up-down direction, and the water outlet effect of the composite filter element is affected.

In order to achieve the above purpose, the composite filter element provided by the utility model comprises a filter flask, a filter flask cover and a filter flask cover; the filter bottle cover is covered with the filter bottle, the filter bottle cover is provided with an avoidance port, the filter core cover is arranged at the avoidance port, and the filter core cover is detachably connected with the filter bottle cover; the filter cover is provided with a plurality of first water flow passages, the filter cover is provided with a plurality of second water flow passages, at least part of the outlet ends of the first water flow passages are in sealing connection with the inlet ends of the second water flow passages, and the area of the outlet ends of the first water flow passages is smaller than that of the inlet ends of the second water flow passages.

In an embodiment, the filter element cover is provided with a plurality of sinking grooves, the notch of the sinking groove is correspondingly arranged with the outlet end of the first water flow passage, and the notch area of the sinking groove is larger than the area of the outlet end of the first water flow passage.

In an embodiment, the filter element cover is further provided with a plurality of waist-shaped grooves, the waist-shaped grooves are correspondingly arranged with the outlet end of the first water flowing channel, the sinking grooves are formed in the bottoms of the waist-shaped grooves, and the notch area of the sinking grooves is smaller than the bottom area of the waist-shaped grooves.

In an embodiment, the filter element cover is further provided with a water passing channel, and the waist-shaped groove, the sink groove and the water passing channel are communicated to form the second water passing channel.

In one embodiment, the waist-shaped groove extends in an up-down direction.

In an embodiment, the composite filter element further comprises a plurality of sealing rings disposed in the plurality of waist-shaped grooves.

In one embodiment, the sealing ring protrudes from the notch of the waist-shaped groove.

In an embodiment, the area formed by surrounding the inner edge of the sealing ring is larger than the notch area of the sinking groove.

In an embodiment, the height of the inner edge of the sealing ring is greater than the height of the outlet end of the first water flow passage.

In an embodiment, the height of the outlet end of the first water flow channel is one half to four fifth of the height of the inner edge of the sealing ring.

In an embodiment, the width of the inner edge of the sealing ring is larger than the width of the outlet end of the first water flow passage.

In an embodiment, the sealing ring is made of rubber or silica gel.

In an embodiment, the filter cover is provided with a clamping groove, the filter cover is provided with a clamping part, and the clamping part is in limit fit with the clamping groove.

In an embodiment, the composite filter element further comprises a filter element handle, and the filter element handle is rotatably connected with the filter element cover.

The utility model also provides water purifying equipment, which comprises the composite filter element. The composite filter element comprises a filter flask, a filter flask cover and a filter flask cover; the filter bottle cover is covered with the filter bottle, the filter bottle cover is provided with an avoidance port, the filter core cover is arranged at the avoidance port, and the filter core cover is detachably connected with the filter bottle cover; the filter cover is provided with a plurality of first water flow passages, the filter cover is provided with a plurality of second water flow passages, at least part of the outlet ends of the first water flow passages are in sealing connection with the inlet ends of the second water flow passages, and the area of the outlet ends of the first water flow passages is smaller than that of the inlet ends of the second water flow passages.

According to the technical scheme, the composite filter element comprises a filter flask, a filter flask cover and a filter flask cover; the filter bottle cover is covered with the filter bottle, the filter bottle cover is provided with an avoidance port, the filter core cover is arranged at the avoidance port, and the filter core cover is detachably connected with the filter bottle cover; the filter cover is provided with a plurality of first water flow passages, the filter cover is provided with a plurality of second water flow passages, at least part of the outlet ends of the first water flow passages are in sealing connection with the inlet ends of the second water flow passages, and the area of the outlet ends of the first water flow passages is smaller than that of the inlet ends of the second water flow passages. So set up, can make filter core lid can rock from top to bottom for the filter flask lid, but because the area of the entrance point of second flow channel is greater than the area of the exit end of first runner, when consequently filter core lid rocks in upper and lower direction, also can not influence the water volume of first flow channel and second flow channel to can guarantee the play water effect of compound filter core.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a composite filter element according to an embodiment of the present utility model;

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

FIG. 3 is a cross-sectional view of the composite cartridge of FIG. 1;

FIG. 4 is an enlarged view of FIG. 3 at A;

FIG. 5 is a water flow path diagram of the composite cartridge of FIG. 1;

FIG. 6 is a cross-sectional view of the composite cartridge of FIG. 3 with the internal structure removed;

FIG. 7 is an exploded view of the filter cap assembly of FIG. 2;

FIG. 8 is a schematic view of a first filter assembly according to the present utility model;

FIG. 9 is an enlarged view at B in FIG. 8;

FIG. 10 is an exploded view of the first filter assembly of FIG. 8;

FIG. 11 is a schematic view of the cartridge cover and cartridge handle of FIG. 10;

FIG. 12 is a cross-sectional view of the first filter assembly of FIG. 8;

FIG. 13 is an enlarged view of FIG. 12 at C;

FIG. 14 is a schematic view of a second filter assembly of the present utility model;

FIG. 15 is an exploded view of the second filter assembly of FIG. 14;

Fig. 16 is a cross-sectional view of the second filter assembly of fig. 14.

Reference numerals illustrate:

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if the meaning of "and/or" is presented throughout this document, it is intended to include three schemes in parallel, taking "a and/or B" as an example, including a scheme, or B scheme, or a scheme where a and B meet simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The utility model provides an embodiment of a composite filter element, which is used for being installed in water purifying equipment to filter raw water (namely tap water) passing through the composite filter element, so that the water quality meets the requirements of users and is used by the users.

Referring to fig. 1 to 16, a composite filter element 10 according to the present utility model includes a filter flask 100, a first filter assembly 200, a second filter assembly 300, and a filter cap assembly 400; the filter bottle 100 is internally provided with a containing cavity 110, the first filter assembly 200 and the second filter assembly 300 are arranged in the containing cavity 110, and the first filter assembly 200 is positioned in the second filter assembly 300, or the second filter assembly 300 is positioned in the first filter assembly 200, or the first filter assembly 200 is positioned at one side of the second filter assembly 300. It should be noted that, the first filter assembly 200 and the second filter assembly 300 are respectively disposed in two independent chambers in the filter flask 100, that is, a first chamber 111 and a second chamber 112 are formed in the accommodating cavity 110, the first filter assembly 200 is disposed in the first chamber 111, and the second filter assembly 300 is disposed in the second chamber 112. The filter bottle 100 is in a barrel shape, the upper end of the filter bottle is provided with an opening, and the filter cover assembly 400 at least covers the opening. The filter cap assembly 400 is provided with at least one water inlet end and at least one water outlet end, both of which are in communication with the receiving chamber 110.

Referring to fig. 3 and 6, specifically, the first filter assembly 200 and the second filter assembly 300 are disposed in the accommodating cavity 110 of the filter flask 100; the first filter assembly 200 may include a pre-filter element 221, a post-filter element 222, and both the pre-filter element 221 and the post-filter element 222, the first filter assembly 200 may filter out impurities contained in water and/or improve the taste of water, the second filter assembly 300 may include a reverse osmosis filter element 310, and the second filter assembly 300 may filter out solutes such as salt ions in water, thereby reducing the concentration of solutes such as salt ions in water and reducing the TDS value of raw water.

Referring to fig. 1 to 7, the filter cap assembly 400 includes a filter cap 410, a filter cap handle 420, a decoration cap 430 and an adapter 440, wherein the filter cap handle 420 is rotatably connected with the filter cap 410, and the decoration cap 430 covers the filter cap 410. The filter bottle cap 410 is provided with a first water inlet 411, a first water outlet 412, a second water inlet 413, a second water outlet 414 and a wastewater outlet 415. Correspondingly, the first water inlet 411 is a raw water inlet, i.e. a water inlet communicated with the water inlet side of the pre-filter 221, for inflow of raw water; the first water outlet 412 is a water outlet communicated with the water outlet side of the pre-filter 221, and is used for water filtered by the pre-filter 221 to flow out; the second water inlet 413 is a water inlet communicated with the water inlet side of the reverse osmosis filter element 310, and water flows into the first chamber 111 through the second water inlet 413 after the water flow is pressurized by the pump, and is filtered through the reverse osmosis filter element 310; the wastewater outlet 415 is a water outlet of the wastewater filtered by the reverse osmosis filter element 310, and is mainly used for the wastewater flowing out after passing through the reverse osmosis filter element 310.

The second water outlet 414 may be a water outlet that communicates with the water outlet side of the reverse osmosis filter element 310, or may be a water outlet that communicates with the water outlet side of the post-filter element 222. When the first filter assembly 200 includes only the pre-filter element 221, the second water outlet 414 is used as a water outlet of the pure water filtered by the reverse osmosis filter element 310, and may be directly communicated with the pure water outlet side of the reverse osmosis filter element 310, so as to allow the pure water to flow out; when the first filter assembly 200 includes only the post-filter element 222, or includes both the pre-filter element 221 and the post-filter element 222, the second water outlet 414 is used as the water outlet of the pure water filtered by the post-filter element 222, and the pure water filtered by the reverse osmosis filter element 310 should flow into the post-filter element 222 for filtering again, and at this time, the second water outlet 414 is communicated with the water outlet side of the post-filter element 222.

Referring to fig. 7, further, filter bottle handles 417 are disposed on opposite sides of the filter bottle cap 410, the filter bottle handles 420 are disposed in a substantially U-shape, filter bottle handle switching portions 420a are disposed on two ends of the filter bottle handle 420, and the filter bottle handle switching portions 420a are disposed in the filter bottle handle 417 and rotatable with respect to the filter bottle handle 417, so that the filter bottle handles 420 are rotatable with respect to the filter bottle cap 410, so that a user can conveniently handle the composite filter element 10 directly through the filter bottle handles 420. The decorative cover 430 covers the filter cap 410, and mainly covers the outer wall surfaces of the plurality of water channels of the filter cap 410, so as to ensure the consistency of the appearance of the composite filter element 10.

Referring to fig. 8 to 13, the first filter assembly 200 includes a cartridge cover 210, a filter cartridge 220, a water outlet pipe 230, a welding tab 240, an upper end cap 250, a lower end cap 260, a cartridge handle 270, and a partition 280. The filter element cover 210 is in sealing connection with the upper end cover 250, the filter element 220 is disposed between the upper end cover 250 and the lower end cover 260, and the filter element 220 may be a pre-filter element 221, or a post-filter element 222, or may include both the pre-filter element 221 and the post-filter element 222. When the filter element 220 includes both the pre-filter element 221 and the post-filter element 222, the pre-filter element 221 and the post-filter element 222 may be disposed up and down, or may be disposed left and right, or may be disposed inside and outside, and the specific position is not limited. The pre-filter element 221 and the post-filter element 222 are separated by the separating member 280, so that when the first filter assembly 200 is installed in the water purifying apparatus for use, the separating member 280 encloses with other structures in the composite filter element 10 to form a first filter cavity and a second filter cavity which are independent of each other, and the pre-filter element 221 and the post-filter element 222 are respectively arranged in the first filter cavity and the second filter cavity, so that a water flow path passing through the pre-filter element 221 and a water flow path passing through the post-filter element 222 are not affected by each other.

When the filter cartridge 220 includes both the pre-cartridge 221 and the post-cartridge 222, since the pre-cartridge 221 is used for filtering most of impurities in raw water, the volume of the pre-cartridge 221 needs to be set larger, and the water passing through the post-cartridge 222 is filtered twice by the pre-cartridge 221 and the reverse osmosis cartridge 310, so that the solute content in the water is extremely small, and the overall volume of the post-cartridge 222 can be set smaller, therefore, the pre-cartridge 221 and the post-cartridge 222 are arranged in the up-down direction, and the filtering effect of the pre-cartridge 221 and the post-cartridge 222 can be ensured. Specifically, the pre-filter 221 is located above the post-filter 222, that is, the pre-filter 221 is disposed near the filter cover 210, and the post-filter 222 is disposed on a side of the pre-filter 221 away from the filter cover 210.

Referring to fig. 3 and 10, the pre-filter 221 and the post-filter 222 are hollow and tubular, wherein one end of the pre-filter 221 is connected to the upper end cover 250, the other end is connected to the upper surface of the partition 280, and the connection between the pre-filter 221 and the upper end cover 250 and the partition 280 is glued to avoid that water flows directly flow through the connection between the pre-filter 221 and the upper end cover 250 and the partition 280 without being filtered by the pre-filter 221, and of course, the pre-filter 221 and the upper end cover 250 and the partition 280 may be connected by other means, which is not limited in particular. The separator 280 may be configured in a cylindrical shape, and the post-filter 222 is disposed in the cylindrical separator 280, and the pre-filter 221 and the post-filter 222 are separated by the separator 280. The cylindrical separator 280 has an opening at the bottom for the post cartridge 222 to be placed into the separator 280, and is sealed by the lower end cap 260. The post-filter element 222 disposed inside the cylindrical partition 280 is glued to the top inside the partition 280 and the lower end cap 260, respectively, so as to prevent water from flowing directly through the junction between the post-filter element 222 and the top inside the partition 280 and the lower end cap 260 without filtering by the post-filter element 222, and of course, the post-filter element 222 and the top inside the partition 280 and the lower end cap 260 may be connected in other manners, which is not particularly limited.

Referring to fig. 3, the length of the pre-filter 221 is greater than the length of the post-filter 222 to ensure the filtering effect of the pre-filter 221 and the post-filter 222. Further, the length of the pre-filter 221 is 2-3 times the length of the post-filter 222.

It should be noted that, in order to ensure the compactness and miniaturization of the structure of the first filter assembly 200, since the pre-filter element 221 is in a hollow cylindrical shape, and the post-filter element 222 is disposed below the pre-filter element 221, a water outlet pipe 230 may be disposed inside the pre-filter element 221, one end of the water outlet pipe 230 is communicated with the water outlet side of the post-filter element 222, and the other end is communicated with the water outlet channel on the filter element cover 210, so that the water inlet channel and the water outlet channel of the first filter assembly 200 may be integrated on the filter element cover 210, thereby ensuring the compactness of the structure of the first filter assembly 200, and realizing miniaturization of the first filter assembly 200 and the composite filter element 10 provided with the first filter assembly 200. In order to ensure the independence of the water outlet flow path of the rear filter element 222 and the water outlet flow path of the front filter element 221, the tightness of the two ends of the water outlet pipe 230 can be ensured by arranging corresponding sealing structures, for example, two welding pieces 240 are respectively connected with the filter element cover 210 and the partition piece 280 to form a sealing piece groove of the sealing piece, and the sealing piece is arranged in the sealing piece groove to limit the position of the sealing piece, and simultaneously, the two ends of the water outlet pipe 230 are sealed by the sealing action of the sealing piece.

Referring to fig. 8 to 13, further, the whole first filter assembly 200 is integrally disposed, the filter element cover 210 is located at the top of the whole first filter assembly 200, the filter element cover 210 is connected to the upper end cover 250, and the fit between the filter element cover 210 and the upper end cover 250 may be a sealing connection, an adhesive connection, or other connection manners. The first filter assembly 200 further includes a filter handle 270, the filter handle mounting grooves 214 are disposed on opposite sides of the filter cover 210, the filter handle 270 is disposed in a substantially U-shape, two ends of the filter handle 270 are provided with filter handle adapting portions 270a, and the filter handle adapting portions 270a are disposed in the filter handle mounting grooves 214 and rotatable relative to the filter handle mounting grooves 214, so that the filter handle 270 is rotatable relative to the filter cover 210, and the service life of the filter cartridge 220 is shorter when compared with that of the reverse osmosis filter cartridge 310, considering that the filter cartridge 220, i.e. the pre-filter cartridge 221 and/or the post-filter cartridge 222, the filter cartridge 220 can be detached from the composite filter cartridge 10 by lifting the filter handle 270 when the service life of the filter cartridge 220 expires, which is convenient for users.

Referring to fig. 5 to 7, further, the filter cap 410 may be provided with a relief port 416, and the filter cap 210 is disposed at the relief port 416 for mounting the first filter assembly 200. The filter element cover 210 is disposed corresponding to the first chamber 111, and the filter element cover 210 may be an independent component, disposed at the avoidance port 416 and detachably connected to the filter element cover 410, where when the first filter element 200 is replaced, only the filter element cover 210 needs to be removed, and then the first filter element 200 needs to be replaced; alternatively, the filter cartridge cover 210 may be used as part of the first filter assembly 200, the filter cartridge cover 210 may be coupled to the filter cartridge 220, and the entire filter cartridge 220 may be directly carried out by removing the filter cartridge cover 210 to allow replacement of the first filter assembly 200. It should be emphasized that the connection manner of the filter element cover 210 and the filter element 220 may be a direct connection manner or an indirect connection manner, for example, a connection manner is performed between the filter element cover 210 and the filter element 220 through the upper end cover 250, which is not limited in any way.

Referring to fig. 3 to 6, fig. 14 to 16, the second filter assembly 300 includes a reverse osmosis filter element 310, a central tube 340, a reverse osmosis top cover 320 and a reverse osmosis bottom cover 330, wherein the reverse osmosis filter element 310 is sleeved on the outer wall surface of the central tube 340, the reverse osmosis filter element 310 is arranged between the reverse osmosis top cover 320 and the reverse osmosis bottom cover 330, the upper end and the lower end of the reverse osmosis filter element 310 are fixed through the reverse osmosis top cover 320 and the reverse osmosis bottom cover 330, and further, the reverse osmosis top cover 320 and the reverse osmosis bottom cover 330 are further provided with reverse osmosis filter element 310 grooves for embedding the end parts of the reverse osmosis filter element 310; thus, reverse osmosis top cap 320 and reverse osmosis bottom cap 330 cooperate to secure reverse osmosis cartridge 310 within filter flask 100.

Referring to fig. 3 to 5, the second filter assembly 300 is disposed in the accommodating chamber 110, the accommodating chamber 110 is partitioned into a first chamber 111 and a second chamber 112 by the central tube 340, the second chamber 112 is disposed at the outer periphery of the first chamber 111, specifically, the central tube 340 is disposed in a hollow cylindrical shape, the first chamber 111 is formed inside the central tube 340, and the second chamber 112 is formed outside the hollow tube. The first filter assembly 200 is disposed in the first chamber 111, a first water passing gap 610 is formed between the pre-filter element 221 and the inner wall surface of the central tube 340, the first water passing gap 610 is communicated with the first water inlet 411, the second filter assembly 300 is disposed in the second chamber 112, a second water passing gap 620 is formed between the reverse osmosis filter element 310 and the inner wall surface of the filter flask 100, and the second water passing gap 620 is communicated with the second water inlet 413.

When the filter cartridge 220 of the first filter assembly 200 includes the pre-cartridge 221 and the post-cartridge 222, the partition 280 partitions the first chamber 111 into a first filter chamber and a second filter chamber that are independent of each other, the pre-cartridge 221 is placed in the first filter chamber, and the post-cartridge 222 is placed in the second filter chamber to ensure that the water flow path through the pre-cartridge 221 and the water flow path through the post-cartridge 222 do not interfere with each other. Further, the first water passing hole 340a may be further formed at the position of the central tube 340 corresponding to the second filter cavity, so that the pure water filtered by the reverse osmosis filter element 310 may flow into the second filter cavity directly through the second water passing hole 280a, and be filtered again through the rear filter element 222, without setting a separate pipeline between the pure water outlet side of the reverse osmosis filter element 310 and the water inlet side of the rear filter element 222, so as to achieve compactness of the structure of the composite filter element 10, and the first water passing hole 340a is communicated with the first chamber 111 and the second filter cavity, so that the path from the pure water outlet side of the reverse osmosis filter element 310 to the water inlet side of the rear filter element 222 is further shortened, and the water outlet efficiency of the composite filter element 10 is improved.

Referring to fig. 10, further, the partition 280 is disposed in a barrel shape, the post-filter 222 is disposed in the partition 280, and a peripheral wall of the partition 280 and an inner wall of the first central tube 340 form the third water gap 630; the peripheral wall of the partition 280 is provided with a second water passing hole 280a, and the first chamber 111 communicates with the second filter chamber through the first water passing hole 340a and the second water passing hole 280 a. By arranging the partition 280 in a barrel shape, the rear filter element 222 arranged in the barrel-shaped partition 280 is not easy to tear when being floated up and down under the action of water pressure, thereby influencing the service life of the rear filter element 222.

The flow path of the composite filter element 10 provided by the utility model is specifically as follows:

Referring to fig. 5, raw water flows into the first water gap 610 through the first water inlet 411, is filtered by the pre-filter 221, flows out of the water outlet channel between the inner wall of the pre-filter 221 and the outer wall of the water outlet pipe 230, and flows out of the first water outlet 412. After the water flowing out from the first water outlet 412 is pressurized by the booster pump, the water flows into the second water passing gap 620 from the second water inlet 413, enters water from the side surface of the reverse osmosis filter element 310 (here, the reverse osmosis filter element 310 adopts a 3D water-saving film, if the reverse osmosis filter element 310 adopts a common filter film, the water enters from the bottom of the reverse osmosis filter element 310), is filtered by the reverse osmosis filter element 310, and then is divided into a pure water channel and a waste water channel, pure water flows into the rear filter element 222 for filtering again, and waste water flows out of the composite filter element 10 from the waste water outlet 415. The pure water flows to the third water passing gap 630 through the first water passing hole 340a on the central tube 340, then flows to the post filter element 222 through the second water passing hole 280a on the partition 280 for filtering, and the pure water filtered by the post filter element 222 flows to the water outlet tube 230 from the inside of the post filter element 222 and finally flows out from the second water outlet 414 for the user.

It should be emphasized that if the filter element 220 does not include the post-filter element 222, pure water filtered by the reverse osmosis filter element 310 directly flows out of the second water outlet 414 for the user to use.

Referring to fig. 1-7, in one embodiment of the present utility model, the composite filter cartridge 10 includes a filter flask 100, a filter flask cap 410, and a filter flask cap 210; the filter bottle cap 410 covers the filter bottle 100, the filter bottle cap 410 is provided with an avoidance port 416, the filter core cap 210 is arranged at the avoidance port 416, and the filter core cap 210 is detachably connected with the filter bottle cap 410; the filter cap 410 has a plurality of first water flow channels 410a, the filter cap 210 has a plurality of second water flow channels 210a, at least a portion of the outlet ends of the first water flow channels 410a are in sealing connection with the inlet ends of the second water flow channels 210a, and the area of the outlet ends of the first water flow channels 410a is smaller than the area of the inlet ends of the second water flow channels 210 a.

Specifically, the avoiding port 416 of the filter cap 410 is disposed corresponding to the first chamber 111, so that the filter cap 210 is disposed corresponding to the first chamber 111, and the filter cap 210 and the filter cap 410 are detachably connected, so that after the filter cap 210 is detached by a user, the first filter assembly 200 in the first chamber 111 is replaced, and the filter cap 210 can be disposed as a part of the first filter assembly 200, and by detaching the filter cap 210, the first filter assembly 200 can be detached from the first chamber 111 entirely, so that the first filter assembly 200 is replaced. Alternatively, the cartridge cover 210 may be provided as a separate reusable component, and the filter cartridge 220 in the first chamber 111 may be replaced by removing the cartridge cover 210.

Referring to fig. 1, the filter cap 410 is specifically provided with 5 first water flow channels 410a, which respectively correspond to the first water inlet 411, the first water outlet 412, the second water inlet 413, the second water outlet 414 and the wastewater outlet 415 on the filter cap 410, however, in other embodiments, the number of the first water flow channels 410a may be increased or decreased according to specific situations, which is not limited specifically. Since the filter element cover 210 is disposed corresponding to the first chamber 111, at least 2 second water flow passages 210a are disposed on the filter element cover 210 and correspond to the first water inlet 411 and the first water outlet 412, respectively, and in this embodiment, 3 second water flow passages 210a are disposed on the filter element cover 210 and correspond to the first water inlet 411, the first water outlet 412 and the second water outlet 414, respectively.

The outlet ends of 3 first water flow channels 410a in the 5 first water flow channels 410a are corresponding to and are in sealing connection with the inlet ends of 3 second water flow channels 210a corresponding to the outlet ends, so that the phenomenon of flowing water at the joint of the first water flow channels 410a and the second water flow channels 210a is avoided. In this regard, since the second water flow channel 210a is formed on the filter element cover 210, after the filter element cover 410 and the filter element cover 210 are assembled, the front filter element 221 and/or the rear filter element 222 can shake up and down due to the force of the water pressure in the first chamber 111, so that the filter element cover 210 can be driven to shake up and down, so that the butt joint between the outlet end of the first water flow channel 410a and the water inlet end of the second water flow channel 210a on the filter element cover 410 is dislocated in the up-down direction, and the two butt joints cannot be completely butted, thereby affecting the water outlet effect of the composite filter element 10. Therefore, alternatively, the area of the outlet end of the first water flow channel 410a is smaller than the area of the inlet end of the second water flow channel 210a, so that although the filter element cover 210 shakes up and down relative to the filter element cover 410, the water passing amount of the first water flow channel 410a and the second water flow channel 210a is not affected when the filter element cover 210 shakes up and down because the area of the inlet end of the second water flow channel 210a is larger than the area of the outlet end of the first flow channel, thereby ensuring the water outlet effect of the composite filter element 10.

Referring to fig. 2 and fig. 7, it should be noted that the filter cap 410 is further provided with an adapter 440, and one end of the adapter 440 is inserted into the first water flow channel 410a, and the other end is connected to a pipeline. The outlet end of the first water flow channel 410a refers to the end of the first water flow channel 410a away from the adapter 440, not specifically to the outlet end of the water flowing in the first water flow channel 410a, and similarly, the inlet end of the second water flow channel 210a refers to the end near the outlet end of the first water flow channel 410a, not specifically to the inlet end of the water flowing in the second water flow channel 210 a.

According to the technical scheme of the utility model, the composite filter element 10 comprises a filter flask 100, a filter flask cover 410 and a filter flask cover 210; the filter bottle cap 410 covers the filter bottle 100, the filter bottle cap 410 is provided with an avoidance port 416, the filter core cap 210 is arranged at the avoidance port 416, and the filter core cap 210 is detachably connected with the filter bottle cap 410; the filter cap 410 has a plurality of first water flow channels 410a, the filter cap 210 has a plurality of second water flow channels 210a, at least a portion of the outlet ends of the first water flow channels 410a are in sealing connection with the inlet ends of the second water flow channels 210a, and the area of the outlet ends of the first water flow channels 410a is smaller than the area of the inlet ends of the second water flow channels 210 a. By the arrangement, although the filter element cover 210 can shake up and down relative to the filter element cover 410, the area of the inlet end of the second water passing flow passage 210a is larger than that of the outlet end of the first flow passage, so that the water passing amount of the first water passing flow passage 410a and the second water passing flow passage 210a is not influenced when the filter element cover 210 shakes up and down, and the water outlet effect of the composite filter element 10 can be ensured.

Referring to fig. 4, 11 and 13, in an embodiment, the filter cover 210 is provided with a plurality of sink grooves 210a2, the notch of the sink groove 210a2 is disposed corresponding to the outlet end of the first water flow channel 410a, and the area of the notch of the sink groove 210a2 is larger than the area of the outlet end of the first water flow channel 410 a.

Specifically, the filter element cover 210 is provided with a plurality of settling grooves 210a2, the number of the settling grooves 210a2 is consistent with that of the second water flow channels 210a, the settling grooves 210a2 can be used as the inlet ends of the second water flow channels 210a, and correspond to the outlet ends of the first water flow channels 410a, and the area of the notch of the settling groove 210a2 is larger than the area of the outlet ends of the first water flow channels 410a, so that when the filter element cover 210 shakes up and down, the outlet ends of the first water flow channels 410a and the inlet ends of the second water flow channels 210a are guaranteed to be always in a communication state, and the outlet ends of the first water flow channels 410a or the inlet ends of the second water flow channels 210a are not blocked due to dislocation, so that the water outlet effect of the composite filter element 10 is affected.

Further, the filter element cover 210 is further provided with a plurality of waist-shaped grooves 210a1, the waist-shaped grooves 210a1 are disposed corresponding to the outlet ends of the first water flow channels 410a, the sink grooves 210a2 are formed at the bottoms of the waist-shaped grooves 210a1, and the notch area of the sink grooves 210a2 is smaller than the groove bottom area of the waist-shaped grooves 210a 1.

Specifically, the filter element cover 210 may further be provided with a plurality of waist-shaped slots 210a1, the number of the waist-shaped slots 210a1 is consistent with that of the second water flow channels 210a, the waist-shaped slots 210a1 may be used as the inlet ends of the second water flow channels 210a, which are disposed corresponding to the outlet ends of the first water flow channels 410a, the sink slots 210a2 are formed at the bottoms of the waist-shaped slots 210a1, and the slot opening areas of the sink slots 210a2 are smaller than the slot bottom areas of the waist-shaped slots 210a1, so that when the filter element cover 210 shakes up and down, the outlet ends of the first water flow channels 410a and the inlet ends of the second water flow channels 210a are always guaranteed that the communicating state will not block the outlet ends of the first water flow channels 410a or the inlet ends of the second water flow channels 210a due to dislocation, thereby affecting the water outlet effect of the composite filter element 10.

Referring to fig. 4, 11 and 13, the filter cover 210 is further provided with a water channel 210a3, and the waist-shaped groove 210a1, the sink groove 210a2 and the water channel 210a3 are communicated to form the second water channel 210a. Specifically, the aperture of the water passing channel 210a3 may be set to be identical to the aperture of the outlet end of the first water passing channel 210a3, so as to ensure the stability of the water flowing from the first water passing channel 410a to the second water passing channel 210a, and at the same time, ensure the stability of the water flowing from the second water passing channel 210a to the first water passing channel 410 a.

Referring to fig. 11, in an embodiment, the waist-shaped slot 210a1 extends along the up-down direction. By this arrangement, even when the amount of displacement of the cartridge cover 210 in the up-down direction is too large, the outlet at the junction between the cartridge cover 410 and the cartridge cover 210 is not blocked by the misalignment, and the water outlet effect of the composite cartridge 10 is not affected.

Referring to fig. 9, in an embodiment, the filter cover 210 is provided with a first water inlet port 211 and a first water outlet port 212, the pre-filter 221 is disposed in a hollow cylinder, the first water inlet port 211 is communicated with the water inlet side of the pre-filter 221, and the first water outlet port 212 is communicated with the water outlet side of the pre-filter 221. Specifically, raw water may flow into the second chamber 112 through the first water inlet 211, be filtered through the pre-filter 221, and flow out through the first water outlet 212.

Referring to fig. 1, 2, 7 and 9, in an embodiment, the filter cap 410 is further provided with a first water inlet 411, a first water outlet 412, a second water inlet 413, a second water outlet 414 and a waste water outlet 415, the filter cap 210 is further provided with a second water outlet 213, the first water inlet 211 and the first water inlet 411 are sealed and communicated, the first water outlet 212 and the first water outlet 412 are sealed and communicated, the second water outlet 213 and the second water outlet 414 are sealed and communicated, the second water inlet 413 and the water inlet side of the reverse osmosis filter element 310 are communicated, the second water outlet 414 and the water outlet side of the reverse osmosis filter element 310 are communicated, and the waste water outlet 415 and the water outlet side of the reverse osmosis filter element 310 are communicated.

Specifically, to facilitate the installation of the composite filter element 10 and the pipeline, the first water inlet 411, the first water outlet 412, the second water inlet 413, the second water outlet 414 and the waste water outlet 415 for connection with the pipeline are integrated on the filter bottle cap 410, and to facilitate the connection of the pipeline, the adapter 440 may be correspondingly arranged at the first water inlet 411, the first water outlet 412, the second water inlet 413, the second water outlet 414 and the waste water outlet 415 for connection with the pipeline. Because the pre-filter assembly 200 is removable with respect to the filter flask 100, a corresponding interface is also provided on the cartridge cover 210 to create a finished flow path. Specifically, the first water inlet port 211 is in sealed conduction with the first water inlet 411, the first water outlet port 212 is in sealed conduction with the first water outlet 412, the second water outlet port 213 is in sealed conduction with the second water outlet 414, the second water inlet 413 is in communication with the water inlet side of the reverse osmosis filter element 310, the second water outlet 414 is in communication with the water outlet side of the reverse osmosis filter element 310, and the wastewater outlet 415 is in communication with the water outlet side of the reverse osmosis filter element 310.

The flow path of the water flow in the composite filter element 10 is as follows: flows in from the first water inlet 411, flows to the front filter element 221 through the first water inlet 211 for filtering, then flows to the first water outlet 212, and then flows to the first water outlet 412 for outflow. The water flowing out from the first water outlet 412 flows in from the second water inlet 413 under the pressurization action of the booster pump, is filtered by the reverse osmosis filter element 310 and then flows out from the wastewater water outlet 415 in two ways, and flows out from the second water outlet 213 to the second water outlet 414 in the other way. The waterway scheme of the invention has reasonable design, the utilization rate of the waterway layout space in the filter flask 100 is high, and more space can not be occupied, so that the sizes of the pre-filter element 221 and the reverse osmosis filter element 310 in the filter flask can be made larger when the whole size of the composite filter element 10 is unchanged, and the waterway flux of the composite filter element 10 is improved.

Referring to fig. 4, 11 and 13, in an embodiment, the composite filter element 10 further includes a plurality of sealing rings 500, and the plurality of sealing rings 500 are disposed in the plurality of waist-shaped grooves 210a 1. Specifically, to ensure tightness at the junction between the outlet end of the first water flow channel 410a and the inlet end of the second water flow channel 210a, the composite filter element 10 is further disposed on a plurality of sealing rings 500, and the number of the sealing rings 500 is identical to that of the waist-shaped grooves 210a1 and all the sealing rings are disposed in the waist-shaped grooves 210a 1.

Referring to fig. 9, 11 and 13, it is worth mentioning that the sealing ring 500 protrudes from the notch of the waist-shaped groove 210a 1. By means of the arrangement, when the filter element cover 210 is installed at the avoiding opening 416 of the filter element cover 410, the sealing ring 500 can enable the butt joint of the outlet end of the first water flow channel 410a and the inlet end of the second water flow channel 210a to be in sealing butt joint through elastic deformation, and meanwhile the filter element cover 210 is prevented from easily shaking relative to the filter element cover 410 in the up-down direction. The material of the seal ring 500 may be rubber or silica gel, but may be other materials, which is not particularly limited.

In an embodiment, the area formed by the inner periphery of the sealing ring 500 is larger than the notch area of the countersink 210a 2. Specifically, in order to avoid that the inner edge of the sealing ring 500 excessively affects the flow rate of the water flow, the inner edge of the sealing ring 500 is formed to have a larger area than the notch area of the sink 210a 2.

In one embodiment, the height of the inner edge of the sealing ring 500 is greater than the height of the outlet end of the first water flow channel 410 a. By such arrangement, when the filter element cover 210 shakes in the vertical direction, the outlet end of the first water flow channel 410a is not blocked by the sealing ring 500, so as to affect the water outlet effect of the composite filter element 10.

Further, the height of the outlet end of the first water flow channel 410a is one half to four fifths of the height of the inner edge of the sealing ring 500.

In one embodiment, the width of the inner edge of the sealing ring 500 is greater than the width of the outlet end of the first water flow channel 410 a. Specifically, to prevent the cartridge cover 210 from shaking in a horizontal direction with respect to the cartridge cover 410, the sealing ring 500 shields the outlet end of the first water flow path 410a, and thus the width of the inner edge of the sealing ring 500 is set to be greater than the width of the outlet end of the first water flow path 410 a.

Referring to fig. 7 and 11, in an embodiment, the filter cap 410 is provided with a clamping groove 418, the filter cap 210 has a clamping portion 215, and the clamping portion 215 is in limit fit with the clamping groove 418. Specifically, the inlet end of the second water flow channel 210a is disposed on the clamping portion 215, and the clamping portion 215 is in limit fit with the clamping groove 418, so that at least part of the outlet end of the first water flow channel 410a is in sealed connection with the inlet end of the second water flow channel 210a, thereby realizing the conduction of the flow path.

Further, the connection between the groove wall of the locking groove 418 and the upper surface of the filter cap 410 is chamfered. By this arrangement, the filter cartridge cap 210 can be guided when the engaging portion 215 is engaged with the engaging groove 418 of the filter cartridge cap 410, and the seal ring 500 protrudes out of the notch of the waist-shaped groove 210a1, so that the chamfer can also guide the seal ring 500 engaged between the filter cartridge cap 410 and the filter cartridge cap 210.

Referring to fig. 9-11, in one embodiment, the composite cartridge 10 further includes a cartridge handle 270, the cartridge handle 270 being rotatably coupled to the cartridge cover 210. Further, filter element handle mounting grooves 214 are formed in two opposite sides of the filter element cover 210, filter element handle switching portions 270a are formed in two ends of the filter element handle 270, and the filter element handle switching portions 270a are rotatably arranged in the filter element handle mounting grooves 214.

Specifically, the filter element handle 270 is generally U-shaped, two ends of the filter element handle 270 are provided with a filter element handle adapting portion 270a, and the filter element handle adapting portion 270a is disposed in the filter element handle mounting groove 214 and is rotatable relative to the filter element handle mounting groove 214, so that the filter element handle 270 is rotatable relative to the filter element cover 210, and the service life of the filter element 220 is short in consideration of the fact that the filter element 220, that is, the pre-filter element 221 and/or the post-filter element 222, is compared with the reverse osmosis filter element 310, when the service life of the filter element 220 expires, the whole pre-filter assembly 200 can be detached from the composite filter element by lifting the filter element handle 270, so that the use is convenient for users.

Referring to fig. 7 and 11, in one embodiment, the filter handle mounting slot 214 extends along the length of the filter cap 210 to form a sliding space, and the filter handle adapter 270a is slidable within the filter handle mounting slot 214. Further, the filter bottle cap 410 is provided with a limiting groove 419 on two opposite sides, the filter handle 270 is provided with a limiting table 270b on two opposite sides, the limiting groove 419 and the limiting table 270b are in limiting fit in an up-down direction, the filter handle 270 has a first position where the limiting table 270b slides into the limiting groove 419, and a second position where the limiting table 270b slides out of the limiting groove 419. Specifically, the filter element handle adapting portion 270a may slide in the filter element handle mounting groove 214, and when the front filter element 221 needs to be removed and replaced for that user, the filter element handle 270 needs to be slid from the first position to the second position, and then the filter element handle 270 is turned to be lifted. When the filter cartridge handle 270 slides to the first position, the limiting groove 419 and the limiting table 270b are in limiting fit in the up-down direction, so that the filter cartridge handle 270 cannot directly rotate in the up-down direction.

Referring to fig. 10, in an embodiment, the filter element handle 270 is disposed in a U shape, and an inner wall surface of the filter element handle 270 abuts against at least a portion of an outer wall surface of the filter element cover 210. The inner wall surface of the filter element handle 270 is abutted with part of the outer wall surface of the filter element cover 210, so that the composite filter element 10 can be miniaturized by compactly arranging, reasonably constructing and reasonably utilizing the space.

Referring to fig. 12, further, the upper surface of the cartridge handle 270 is flush with the upper surface of the cartridge cover 210. Specifically, the upper surface of the cartridge handle 270 is flush with the upper surface of the cartridge cover 210, ensuring consistency of the upper surface of the pre-filter assembly 200. The upper surface of the cartridge handle 270 is flush with the upper surface of the cartridge cover 210, which refers to the condition when the cartridge handle 270 is in the first position.

The utility model also provides water purifying equipment, which comprises the composite filter element. The specific structure of the composite filter element refers to the above embodiments, and because the water purifying device adopts all the technical solutions of all the embodiments, the water purifying device at least has all the beneficial effects brought by the technical solutions of the embodiments, and the description is omitted herein. Wherein the water purifying device is a water purifying machine, a direct drinking machine or a water purifier.

The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims (15)

1. A composite filter cartridge, the composite filter cartridge comprising:

A filter flask;

The filter bottle cover is covered on the filter bottle and is provided with an avoidance port; and

The filter element cover is arranged at the avoidance port and is detachably connected with the filter element cover;

The filter cover is provided with a plurality of first water flow passages, the filter cover is provided with a plurality of second water flow passages, at least part of the outlet ends of the first water flow passages are in sealing connection with the inlet ends of the second water flow passages, and the area of the outlet ends of the first water flow passages is smaller than that of the inlet ends of the second water flow passages.

2. The composite filter element of claim 1, wherein the filter element cover is provided with a plurality of countersinks, wherein the notches of the countersinks are arranged corresponding to the outlet end of the first water flow channel, and the notch area of the countersinks is larger than the area of the outlet end of the first water flow channel.

3. The composite filter element of claim 2, wherein the filter element cover is further provided with a plurality of waist-shaped grooves, the waist-shaped grooves are arranged corresponding to the outlet ends of the first water flow channels, the sinking grooves are formed at the bottoms of the waist-shaped grooves, and the opening areas of the sinking grooves are smaller than the bottom areas of the waist-shaped grooves.

4. A composite filter element as claimed in claim 3 wherein the filter element cover is further provided with a water passage, the waist-shaped groove, the sink groove and the water passage communicating to form the second water passage.

5. A composite filter element as recited in claim 3, wherein said waist-shaped groove extends in an up-down direction.

6. A composite filter element as recited in claim 3, further comprising a plurality of seal rings disposed within the plurality of waist-shaped grooves.

7. The composite filter element of claim 6, wherein the seal ring protrudes from the notch of the waist-shaped groove.

8. The composite filter element of claim 6, wherein the inner edge of the seal ring defines an area greater than the slot opening area of the countersink.

9. The composite filter element of claim 6, wherein the height of the inner edge of the seal ring is greater than the height of the outlet end of the first water flow passage.

10. The composite filter element of claim 9, wherein the outlet end of the first water flow passage has a height of from one half to four fifths of the height of the inner edge of the seal ring.

11. The composite filter element of claim 6, wherein the seal ring has an inner edge with a width greater than a width of the outlet end of the first water flow passage.

12. The composite filter element of claim 6, wherein the seal ring is made of rubber or silica gel.

13. The composite filter element of claim 6, wherein the filter cap is provided with a snap groove, the filter cap having a snap portion that is in positive engagement with the snap groove.

14. The composite filter element of claim 13, further comprising a filter element handle rotatably coupled to the filter element cover.

15. A water purification apparatus comprising a composite filter element according to any one of claims 1 to 14.