CN114405280A

CN114405280A - End cover, filter element and water purifying device

Info

Publication number: CN114405280A
Application number: CN202210016560.0A
Authority: CN
Inventors: 陈伟明; 郑跃东; 黄廷健
Original assignee: Foshan Midea Qinghu Water Purification Equipment Co ltd; Midea Group Co Ltd
Current assignee: Foshan Midea Qinghu Water Purification Equipment Co ltd; Midea Group Co Ltd
Priority date: 2022-01-07
Filing date: 2022-01-07
Publication date: 2022-04-29
Anticipated expiration: 2042-01-07
Also published as: CN114405280B

Abstract

The invention relates to the technical field of water purification, and provides an end cover, a filter element and a water purification device. The end cap is used for the reverse osmosis membrane element of filter core, first runner has between the shell inner wall of end cap and filter core, the end cap includes: the cover body component is provided with an installation cavity, the installation cavity is used for accommodating the end part of a reverse osmosis membrane group of a reverse osmosis membrane element, the end surface of the cover body component is provided with an installation hole and a wastewater water outlet hole, the installation hole is used for installing a central pipe of the reverse osmosis membrane element, and the wastewater water outlet hole is used for discharging wastewater generated by filtering of the reverse osmosis membrane group; and the pipe component is connected to the end face of the cover body component and is used for being connected with the inner shell of the filter element, and the pipe component is communicated with the mounting hole and the wastewater water outlet hole. The invention can effectively isolate water paths such as water inlet, waste water, drinking water and the like in the filter element, improves the filtering effect, and has the characteristics of simple structure, low cost, high reliability and the like.

Description

End cover, filter element and water purifying device

Technical Field

The invention relates to the technical field of water purification, in particular to an end cover, a filter element and a water purification device.

Background

The water purifier generally takes raw water and tap water as inlet water, and drinking water can be obtained by filtering through different filter elements. The filter core includes the reverse osmosis membrane element, and the reverse osmosis membrane element mainly includes center tube and reverse osmosis membrane group, and reverse osmosis membrane group is along center tube circumference winding on the center tube, and reverse osmosis membrane group includes multilayer reverse osmosis membrane piece to filter intaking, produce drinking water and waste water, the drinking water passes through the center tube and discharges, and waste water passes through the waste water outlet of filter core and discharges.

In the related art, when the reverse osmosis membrane element is installed in the filter element, water paths such as water inlet, waste water and drinking water are easy to interfere with each other, so that the filtering effect is poor.

Disclosure of Invention

The present invention has been made to solve at least one of the problems occurring in the related art. Therefore, the end cover is used for the reverse osmosis membrane element of the filter element, can effectively isolate water paths such as water inflow, waste water and drinking water in the filter element, avoids mutual interference, improves the filtering effect, and has the characteristics of simple structure, low cost, high reliability and the like.

The invention also provides a filter element.

The invention also provides a water purifying device.

An end cap according to an embodiment of a first aspect of the present invention for a reverse osmosis membrane element of a filter cartridge, the end cap having a first flow path between the end cap and an inner wall of a housing of the filter cartridge, the end cap comprising: the cover body component is provided with an installation cavity, the installation cavity is used for accommodating the end part of a reverse osmosis membrane group of a reverse osmosis membrane element, the end surface of the cover body component is provided with an installation hole and a wastewater water outlet hole, the installation hole is used for installing a central pipe of the reverse osmosis membrane element, and the wastewater water outlet hole is used for discharging wastewater generated by filtering of the reverse osmosis membrane group; and the pipe component is connected to the end face of the cover body component and is used for being connected with the inner shell of the filter element, and the pipe component is communicated with the mounting hole and the wastewater water outlet hole.

According to the end cover provided by the embodiment of the invention, the reverse osmosis membrane element for the filter element is arranged in the filter element, namely the end cover is arranged in the filter element, and a first flow passage is formed between the end cover and the inner wall of the shell of the filter element, so that water can flow conveniently; the mounting cavity of the cover body part can be used for containing the end part of the reverse osmosis membrane group of the reverse osmosis membrane element, the mounting cavity is connected to the end face of the cover body part through a pipe part and is connected with the inner shell of the filter element so as to assemble the reverse osmosis membrane element inside the filter element, the end face of the cover body part is provided with a mounting hole and a wastewater water outlet hole, the mounting hole can be used for mounting a central pipe of the reverse osmosis membrane element so as to facilitate the central pipe to pass through, and the wastewater water outlet hole can discharge wastewater generated by filtering of the reverse osmosis membrane group; the pipe component is communicated with the mounting hole and the wastewater outlet hole. During operation, water such as raw water, running water and the like enters through a water inlet of the filter element, enters the reverse osmosis membrane group through a first flow channel between the end cover and the inner wall of the filter element shell, and then enters the central pipe through the reverse osmosis membrane group, and then flows to a drinking water outlet of the filter element through the central pipe to be discharged, and wastewater generated by filtering the reverse osmosis membrane group flows to a wastewater outlet of the filter element from the end part of the reverse osmosis membrane group through a wastewater water outlet hole of the cover body part and an inner cavity of the pipe part to be discharged. Therefore, the end cover provided by the embodiment of the invention can effectively isolate water paths such as water inlet, wastewater and drinking water in the filter element, avoids mutual interference, improves the filtering effect, and has the characteristics of simple structure, low cost, high reliability and the like.

According to an embodiment of the invention, the cover member and the tube member are integrally formed.

According to one embodiment of the invention at least two of said waste water outlet apertures are annularly arranged around said mounting aperture.

According to one embodiment of the invention, the inner wall of the mounting cavity of the cover body component is provided with a sealing glue layer for being in sealing connection with the end part of the reverse osmosis membrane group.

According to one embodiment of the invention, the outer wall of the pipe part is provided with a receiving groove for mounting the sealing ring.

According to one embodiment of the present invention, the receiving groove has at least two grooves.

According to an embodiment of the invention, the cross-sectional area of the cover part is larger than the cross-sectional area of the tube part.

A filter cartridge according to an embodiment of the second aspect of the invention includes an end cap as described above.

According to the filter element provided by the embodiment of the invention, the end cover is used for a reverse osmosis membrane element of the filter element, namely the end cover is arranged in the filter element, and a first flow passage is arranged between the end cover and the inner wall of the shell of the filter element, so that water inflow and circulation are facilitated; the mounting cavity of the cover body part can be used for containing the end part of the reverse osmosis membrane group of the reverse osmosis membrane element, the mounting cavity is connected to the end face of the cover body part through a pipe part and is connected with the inner shell of the filter element so as to assemble the reverse osmosis membrane element inside the filter element, the end face of the cover body part is provided with a mounting hole and a wastewater water outlet hole, the mounting hole can be used for mounting a central pipe of the reverse osmosis membrane element so as to facilitate the central pipe to pass through, and the wastewater water outlet hole can discharge wastewater generated by filtering of the reverse osmosis membrane group; the pipe component is communicated with the mounting hole and the wastewater outlet hole. During operation, water such as raw water, running water and the like enters through a water inlet of the filter element, enters the reverse osmosis membrane group through a first flow channel between the end cover and the inner wall of the filter element shell, and then enters the central pipe through the reverse osmosis membrane group, and then flows to a drinking water outlet of the filter element through the central pipe to be discharged, and wastewater generated by filtering the reverse osmosis membrane group flows to a wastewater outlet of the filter element from the end part of the reverse osmosis membrane group through a wastewater water outlet hole of the cover body part and an inner cavity of the pipe part to be discharged. Therefore, the filter element provided by the embodiment of the invention has a good filtering effect.

According to the third aspect of the embodiment of the invention, the water purifying device comprises a frame and the filter element, wherein the filter element is arranged on the frame.

According to the water purifying device provided by the embodiment of the invention, the filtering effect can be improved through the filter element.

According to one embodiment of the invention, the filter further comprises a locking assembly arranged on the frame and used for locking the filter element.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

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

Fig. 1 is a schematic view illustrating an internal structure of a disassembled front case of a water purifying device according to an embodiment of the present invention;

FIG. 2 is a schematic view of an internal structure of a disassembled side casing of a water purifying device according to an embodiment of the present invention;

FIG. 3 is a schematic view of the installation of a locking assembly provided by an embodiment of the present invention;

FIG. 4 is a structural schematic diagram of a perspective view of a locking assembly provided by an embodiment of the present invention;

FIG. 5 is a schematic structural view of another perspective of the locking assembly provided by the embodiment of the present invention;

figure 6 is a schematic structural view of a lock body according to an embodiment of the present invention;

figure 7 is a schematic structural view of another perspective of the lock body provided by the embodiment of the present invention;

FIG. 8 is a schematic view of a latch according to an embodiment of the present invention;

FIG. 9 is a schematic view of another embodiment of the latch of the present invention;

FIG. 10 is a schematic structural diagram of a push rod provided in an embodiment of the present invention;

FIG. 11 is one of the schematic structural illustrations of the locking assembly in the locked condition provided by the embodiment of the present invention;

FIG. 12 is a second schematic structural view of the locking assembly in a locked state according to the embodiment of the present invention;

FIG. 13 is one of the schematic structural illustrations of the locking assembly in an unlocked condition provided by the embodiment of the present invention;

FIG. 14 is a second schematic structural view of the locking assembly in an unlocked state according to the embodiment of the present invention;

FIG. 15 is a schematic view of a cartridge according to an embodiment of the present invention;

FIG. 16 is a schematic structural view of a handle provided by an embodiment of the present invention;

FIG. 17 is one of the assembly views of a handle and cartridge provided by embodiments of the present invention;

FIG. 18 is a second schematic view of the assembly of the handle and cartridge provided by the embodiment of the present invention;

FIG. 19 is a third schematic view of the assembly of the handle and cartridge provided by the embodiment of the present invention;

fig. 20 is one of the assembly views of a locking assembly and cartridge arrangement provided by embodiments of the present invention;

fig. 21 is a second schematic view of the assembly of the locking assembly and the filter cartridge assembly provided by the embodiment of the invention;

FIG. 22 is a schematic structural view of an end cap provided by an embodiment of the present invention;

FIG. 23 is a front view of an end cap provided by an embodiment of the present invention;

FIG. 24 is a cross-sectional view of FIG. 23;

FIG. 25 is a top view of an end cap provided by an embodiment of the present invention;

FIG. 26 is a cross-sectional view of a cartridge provided in accordance with an embodiment of the present invention;

reference numerals:

100: a locking assembly; 101: a lock body; 102: locking; 103: a first elastic member; 104: a rotating part;

105: a locking portion; 106: a first abutting portion; 107: a push rod; 108: a second abutting portion;

109: a second elastic member; 110: a first mounting portion; 111: a second mounting portion; 112: a connecting portion;

113: a sliding shaft; 114: a guide hole; 115: positioning the boss; 116: positioning holes; 117: a butt joint groove;

118: a first abutment wall; 119: a first wall; 120: a second wall; 121: an accommodating cavity;

122: a limiting groove; 123: a limiting part; 124: a third mounting portion; 125: a filter element; 126: a handle;

127: a locking groove; 128: a pushing part; 129: a stopper groove; 130: a stopper portion;

131: a second abutment wall; 132: a frame; 133: a filter element installation chamber; 134: a first positioning groove;

135: a second positioning groove; 136: a front housing; 137: a rear housing; 138: a side casing; 139: a top shell;

140: a bottom case; 141: an inlet; 142: a groove; 143: avoiding the notch; 144: a rotating groove;

145: a fastening hole; 146: a rotating shaft; 147: rotating the hole; 148: a limiting bracket; 149: a limiting hole;

200: an end cap; 201: a housing; 202: a first flow passage; 203: a cover member; 204: a pipe member;

205: a mounting cavity; 206: a reverse osmosis membrane set; 207: mounting holes; 208: a waste water outlet;

209: a central tube; 210: an inner shell; 211: a water inlet; 212: a drinking water outlet;

213: a waste water outlet; 214: an accommodating groove; 215: an abutting portion; 216: a second flow passage;

217: a first sleeve; 218: a second sleeve; 219: and a water through hole.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.

In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The following describes a water purification apparatus according to an embodiment of the present invention with reference to the drawings.

As shown in fig. 1 to 3, the water purifying apparatus according to the embodiment of the present invention generally includes a housing, a frame 132, and a filter element structure. Wherein, the shell is detachable box structure, including preceding shell 136, backshell 137, side shell 138, top shell 139 and drain pan 140, frame 132 sets up in the inside of shell, the filter core structure sets up on frame 132, the filter core structure mainly includes filter core 125, handle 126 and locking Assembly 100, it is specific, filter core 125 sets up on frame 132, be used for filtering intaking, generally filter through setting up different filter cores 125, can obtain clean drinking water, handle 126 rotatable the setting in the tip of filter core 125, be convenient for pull filter core 125, locking Assembly 100 passes through fasteners such as bolt and installs on frame 132, be used for locking filter core 125, it is very convenient to use, can see the embodiment that says after specifically.

In the embodiment of the invention, the shell of the water purifying device is arranged into a detachable structure, so that the frame 132 and the filter element structure are convenient to mount; in normal use or normal work of the water purifying device, the locking assembly 100 can tightly lock the filter element 125, so that the filter element 125 is not separated, all water flow can be filtered by the filter element 125, and the filtering effect is further ensured; locking assembly 100 can lock and loosen filter element 125, realizes changing the core fast of purifier filter element 125, and then improves user's use experience.

According to one embodiment of the invention, the water purifying device comprises three groups of filter element structures so as to realize three-stage filtration and improve the filtration effect; and three filter core structures of group set up side by side from top to bottom along the direction of height, like this, can reduce the thickness of complete machine to guarantee that complete machine thickness is ultra-thin. In this example, the filter elements 125 of the three sets of filter element structures may respectively adopt a front PCB filter element and two RO filter elements, one of the two RO filter elements may also be replaced by an NF filter element, which can filter chemical pollutants such as antibiotics, hormones, pesticides, detergents, heavy metals, algal toxins, etc., while mineral ions smaller than the aperture of the filter element may pass through, so as to effectively retain beneficial minerals to adjust water quality.

It is understood that the number of the filter elements 125 of the present invention is not particularly limited, and may be other numbers, and generally, the larger the number is, the better the filtering effect is, and the filter elements may be designed according to actual working conditions.

According to an embodiment of the present invention, the front shell 136 may be a decorative cover to improve the aesthetic appearance of the whole device, thereby improving the user experience.

According to an embodiment of the present invention, the frame 132 is provided with a filter cartridge installation chamber 133, the filter cartridge 125 can be pushed into the filter cartridge installation chamber 133 through a left inlet 141 of the filter cartridge installation chamber 133, and two sides of the inlet 141 of the filter cartridge installation chamber 133 are respectively provided with a locking assembly 100 for locking and unlocking the filter cartridge 125 to achieve the effect of quickly replacing the filter cartridge 125; and the included angle a between the central connecting line of the two locking assemblies 100 and the horizontal plane passing through the central axis of the filter element installation chamber 133 is 30-60 degrees, as shown in fig. 3, that is, the two locking assemblies 100 are obliquely arranged relative to the whole machine, so that the thickness of the whole machine can be further thinned, and the cabinet is particularly suitable for small-space cabinets.

According to an embodiment of the present invention, the filter cartridges 125 are cylindrical, and accordingly, the filter cartridge installation chambers 133 are cylindrical, so that grooves 142 are formed between the top filter cartridge installation chamber 133 and the top housing 139, between the bottom filter cartridge installation chamber 133 and the bottom housing 140, and between two adjacent filter cartridge installation chambers 133, the locking assemblies 100 can be disposed in the grooves 142, and an included angle a between a central connecting line of two locking assemblies 100 corresponding to each filter cartridge 125 and a horizontal plane passing through a central axis of the filter cartridge installation chamber 133 is 45 °, which not only ensures that the locking assemblies 100 can effectively lock the filter cartridges 125, but also ensures that the thickness of the rack is not increased, thereby ensuring that the thickness of the whole water purification apparatus is ultra-thin, and the thickness of the housing of the water purification apparatus is substantially close to the maximum thickness of the rack 132, as shown in fig. 3.

A locking assembly of an embodiment of the present invention will be described with reference to the accompanying drawings.

As shown in fig. 4 to 14, a locking assembly 100 according to an embodiment of the present invention mainly includes: a lock body 101, a shackle 102, and a push rod 107. The lock catch 102 is rotatably disposed on the lock body 101, the first elastic member 103 is disposed between the lock catch 102 and the lock body 101, the rotating portion 104 and the locking portion 105 are disposed on the left and right sides of the lock catch 102, the rotating portion 104 of the lock catch 102 is rotatably connected to the lock body 101 to achieve hinging, and the side surface of the lock catch 102 adjacent to the locking portion 105 is provided with the first abutting portion 106.

The push rod 107 is slidably disposed on a side of the lock body 101 along a vertical direction of a central axis of the rotating portion 104 of the latch, a second abutting portion 108 is disposed at a first end of the push rod 107, the second abutting portion 108 of the push rod 107 is disposed corresponding to the first abutting portion 106 of the latch 102, and the second abutting portion 108 of the push rod 107 is adapted to push the first abutting portion 106 of the latch 102 to move along a direction of extension and retraction of the first elastic member 103, so that the locking portion 105 of the latch 102 is switched between a locking state and a releasing state. Specifically, when the second abutting portion 108 of the push rod 107 slides to abut against the first abutting portion 106, the first abutting portion 106 can be pushed open outwards, that is, the locking portion 105 of the shackle 102 moves towards the direction close to the lock body 101, so as to realize loosening; when the second abutting portion 108 of the push rod 107 slides to be separated from the first abutting portion 106, the locking portion 105 of the shackle 102 moves in a direction away from the lock body 101 under the action of the first elastic member 103, so as to achieve locking. In this example, the first elastic member 103 may be a spring, and accordingly, the acting force of the first elastic member 103 is an elastic force generated by the spring.

According to an embodiment of the present invention, the "second abutting portion 108 is disposed corresponding to the first abutting portion 106" may be understood as follows: in the locked state, the second abutment 108 of the push rod 107 is located above the first abutment 106 of the shackle 102, as shown in fig. 20; in the unclamped state, the second abutment 108 of the push rod 107 moves down to the side of the first abutment 106 and pushes it out, as shown in fig. 21.

According to the locking assembly 100 of the embodiment of the invention, the lock catch 102 is provided with the rotating part 104 and the locking part 105 which are oppositely arranged, the rotating part 104 is rotatably connected with the lock body 101, so that the lock catch 102 rotates on the lock body 101, the first elastic member 103 is arranged between the lock body 101 and the lock catch 102, under the action force of the first elastic member 103, the initial state of the lock catch 102 is the locking state, the push rod 107 positioned on the side surface of the lock body 101 slides along the vertical direction of the central axis of the rotating part 104, the second abutting part 108 of the push rod 107 can push the first abutting part 106 of the lock catch 102 to move along the telescopic direction of the first elastic member 103, so that the first abutting part 106 is pushed open outwards, and the locking part 105 of the lock catch 102 is driven to move outwards towards the direction close to the lock body 101, and is switched to the loosening state; in other words, when the second abutting portion 108 of the push rod 107 slides to abut against the first abutting portion 106, the first abutting portion 106 can be pushed outwards, that is, the locking portion 105 of the shackle 102 moves towards the lock body 101, so as to realize unlocking; when the second abutting portion 108 of the push rod 107 slides to be separated from the first abutting portion 106, the locking portion 105 of the shackle 102 moves in a direction away from the lock body 101 under the action of the first elastic member 103, so as to achieve locking. Therefore, when the locking assembly 100 of the invention is used, the locking state and the unlocking state can be switched by only pushing the push rod 107, so that the core can be easily and conveniently replaced, the core replacing efficiency is improved, and the use experience of a user is also improved.

According to an embodiment of the present invention, as shown in fig. 4 and 5, a second elastic member 109 is disposed at a second end of the push rod 107 away from the second abutting portion 108, when the push rod 107 is slid to return, the second abutting portion 108 of the push rod 107 is separated from the first abutting portion 106 of the latch 102, and the latch 102 returns to the locked state under the action of the first elastic member 103. The second elastic piece 109 is arranged, so that the push rod 107 can be conveniently reset in a sliding mode, and the state can be switched. In this example, the second elastic member 109 may be a spring, and accordingly, the acting force of the second elastic member 109 is an elastic force generated by the spring.

According to an embodiment of the present invention, as shown in fig. 4-10, the lock body 101 has a first mounting portion 110 and a second mounting portion 111 arranged in parallel on the same side, and the first mounting portion 110 has a guiding hole 114.

The push rod 107 is further provided with a connecting part 112 and a sliding shaft 113, the connecting part 112 is arranged along the radial direction of the push rod 107, a first end of the connecting part 112 is connected with a second end of the push rod 107, and the connecting part 112 is positioned between the first mounting part 110 and the second mounting part 111; the sliding shaft 113 is connected to the second end of the connecting portion 112, and the sliding shaft 113 is parallel to the push rod 107, specifically, the sliding shaft 113 extends in a direction away from the second abutting portion 108, and the sliding shaft 113 is slidably disposed in the guide hole 114 of the first mounting portion 110; the second elastic element 109 is sleeved on the sliding shaft 113, and two ends of the second elastic element 109 are respectively abutted against the first mounting portion 110 and the connecting portion 112. In the locked state, the connecting portion 112 abuts against the second mounting portion 111 under the urging force of the second elastic member 109, and in the unlocked state, the second elastic member 109 is in a compressed state by receiving the urging force of the push rod 107, so that the connecting portion 112 is separated from the second mounting portion 111.

According to an embodiment of the present invention, as shown in fig. 6 and 10, the second mounting portion 111 of the lock body 101 is disposed adjacent to the first abutting portion 106 of the shackle 102, the connecting portion 112 of the push rod 107 is provided with a positioning boss 115, the second mounting portion 111 of the lock body 101 is provided with a positioning hole 116, and the positioning hole 116 is matched with the positioning boss 115. In a locked state, under the action of the second elastic element 109, the positioning boss 115 can be clamped into the positioning hole 116 to position the push rod 107, so that the stability of the push rod is improved; in the released state, the second elastic member 109 is in a compressed state due to the pushing force of the push rod 107, and the positioning boss 115 can be disengaged from the positioning hole 116.

According to one embodiment of the present invention, as shown in fig. 6 and 7, the outer end of the first mounting portion 110 of the lock body 101 may or may not be connected to the outer end of the second mounting portion 111. In this example, the outer end of the first mounting portion 110 is connected to the outer end of the second mounting portion 111 to improve the overall structural strength.

According to an embodiment of the present invention, as shown in fig. 7, the second mounting portion 111 of the lock body 101 is provided with an escape notch 143 to facilitate the passage of the push rod 107, and to avoid interference with the sliding of the push rod 107.

According to an embodiment of the present invention, as shown in fig. 6 and 7, the lock body 101 is provided with a limiting bracket 148 at the other side relative to the first mounting portion 110, the number of the limiting brackets 148 is not particularly limited, in this example, the two limiting brackets 148 are provided, the filter cartridge mounting chamber 133 is provided with a limiting groove adapted to the limiting bracket 148, and the limiting bracket 148 is inserted into the limiting groove, so that the limiting of the locking assembly 100 can be achieved, the dislocation can be avoided, the pressure-resistant locking capability can be ensured, the filter cartridge 125 is not easy to be removed, and the occurrence of a water leakage event can be avoided.

According to one embodiment of the present invention, as shown in fig. 8-10, the first abutting portion 106 of the shackle 102 is provided with an abutting groove 117, and the second abutting portion 108 of the push rod 107 is provided with a first abutting wall 118 that mates with the abutting groove 117. Specifically, in the locked state, under the action of the second elastic element 109, the first abutting portion 106 is separated from the second abutting portion 108, and accordingly, the first abutting wall 118 is separated from the abutting groove 117; in the released state, the second elastic element 109 is in a compressed state due to the pushing force of the push rod 107, the first abutting portion 106 abuts against the second abutting portion 108, the first abutting wall 118 is snapped into the abutting groove 117, and the lock catch 102 is pushed open, so that the first abutting wall 118 can be snapped into or out of the abutting groove 117 according to the locked or released state.

According to an embodiment of the present invention, as shown in fig. 10, the first abutting wall 118 of the second abutting portion 108 of the push rod 107 includes a first wall 119 and a second wall 120, the first wall 119 and the second wall 120 are integrally formed, the first wall 119 is adapted to abut against an end surface of the abutting groove 117 of the first abutting portion 106 of the lock 102, and the second wall 120 is adapted to abut against an inner wall of the abutting groove 117 of the first abutting portion 106. Specifically, during the opening process, the first wall 119 first abuts against the end surface of the abutting groove 117 to preliminarily eject the lock catch 102, and corresponds to a lifted state of the handle 126 shown in fig. 18, at this time, the handle 126 is disposed obliquely with respect to the central axis of the filter element 125; continue to mention handle 126, then second wall 120 and the inner wall butt of butt groove 117 to jack up hasp 102 completely, the state is mentioned to handle 126 that corresponds fig. 19 shows, handle 126 sets up along the axis of filter core 125 this moment for handle 126 is even along filter core 125 axis direction atress, thereby can pull whole filter core 125 comparatively steadily and deviate from filter core installation room 133, prevents to receive the collision at the in-process filter core 125 that takes out, and then fine protection filter core 125.

According to an embodiment of the present invention, the first wall 119 of the first abutting wall 118 of the push rod 107 may be an inclined wall, or an arc wall protruding outward, and may be designed according to actual conditions; the second wall 120 may be adapted to the inner wall of the abutment groove 117. In this example, the second wall 120 of the first abutment wall 118 of the push rod 107 and the inner wall of the abutment slot 117 of the first abutment 106 of the latch 102 are both straight walls.

According to an embodiment of the present invention, as shown in fig. 4-7, the lock body 101 is formed with a receiving cavity 121, and the shackle 102 is rotatably disposed in the receiving cavity 121. Specifically, the first elastic element 103 and the part of the latch 102 having the rotating portion 104 are disposed in the accommodating cavity 121, and the other part of the latch 102 having the first abutting portion 106 and the locking portion 105 extends outside the accommodating cavity 121.

According to an embodiment of the present invention, as shown in fig. 6 and 7, the edge of the opening side of the accommodating cavity 121 of the lock body 101 is provided with a limiting portion 123; as shown in fig. 9, a limiting groove 122 is disposed at an inner edge of the lock catch 102, and the limiting portion 123 is adapted to the limiting groove 122 for limiting the rotation of the lock catch 102. Specifically, when the lock catch 102 is disposed in the accommodating cavity 121 of the lock body 101, the limiting portion 123 can be clamped into the limiting groove 122, so that the lock catch 102 rotates in the accommodating cavity 121 at a certain rotation angle, the lock catch 102 is prevented from being separated from the accommodating cavity 121 under the action of the first elastic member 103, and the overall assembly performance is improved. The rotation angle of the lock catch 102 can be designed according to actual conditions.

According to an embodiment of the present invention, as shown in fig. 7, the left side of the receiving cavity 121 of the lock body 101 is provided with a rotating slot 144 for connecting with the rotating portion 104 of the shackle 102 to facilitate the rotation of the shackle 102. In this example, the rotating portion 104 is a rotating shaft.

According to an embodiment of the present invention, as shown in fig. 7 and 8, the receiving cavity 121 of the lock body 101 is provided with a first positioning groove 134 near the right side of the locking part 105; hasp 102 is equipped with second constant head tank 135, and second constant head tank 135 sets up with first constant head tank 134 is relative, and the both ends of first elastic component 103 set up respectively in first constant head tank 134 and second constant head tank 135, realize the location to first elastic component 103 to through being close to locking portion 105 setting with first elastic component 103, can exert the effort to hasp 102 better, in order to improve locking effect.

According to an embodiment of the present invention, as shown in fig. 6, the lock body 101 of the present invention is further provided with a third mounting portion 124 adjacent to the left side of the rotating portion 104, and the third mounting portion 124 is integrally formed with the lock body 101. The third mounting portion 124 is provided with a fastening hole 145, and the third mounting portion 124 can be mounted to the cartridge mounting chamber 133 by a fastening member such as a bolt, thereby achieving the integral assembly of the locking assembly 100. In this example, there are two fastening holes 145, and other numbers are possible.

According to an embodiment of the present invention, the third installation portion 124 is further provided with a limiting hole 149, the filter element installation chamber 133 is provided with a limiting post adapted to the limiting hole 149, when the third installation portion is installed, the limiting hole 149 is connected to the limiting post to realize the positioning of the lock body 101, and then the third installation portion is fixed by a fastening member such as a bolt. Through the arrangement, the stability of the locking assembly 100 can be further improved, so that the locking capacity of the filter element 125 is improved, the stability of the filter element 125 is ensured, and the water leakage event is avoided. In this example, the number of the stopper holes 149 is two, but may be other numbers.

The operation of the locking assembly 100 of the above-described embodiment of the present invention will be generally described, and generally includes a locked state and an unlocked state.

And (3) locking state: as shown in fig. 11 and 12, the second abutting portion 108 of the push rod 107 is separated from the first abutting portion 106 of the striker 102 by the urging force of the second elastic member 109, and the striker 102 is separated from the lock body 101 by the urging force of the first elastic member 103, and the locking is achieved by the locking portion 105.

A loosening state: as shown in fig. 13 and 14, the push rod 107 is pushed to compress the second elastic member 109, the second abutting portion 108 of the push rod 107 abuts against the first abutting portion 106 of the lock catch 102, and further the first elastic member 103 is compressed to drive the lock catch 102 to rotate outward in a direction close to the lock body 101, so as to achieve releasing.

Therefore, the locking assembly 100 of the embodiment of the invention has the characteristics of simple structure, convenient use and quick locking and unlocking. When applied to the filter cartridge 125, locking of the filter cartridge 125 can be achieved and the efficiency of replacement of the filter cartridge 125 can be improved.

The following continues the description of the cartridge arrangement of embodiments of the present invention.

As shown in fig. 15 to 21, the filter cartridge structure of the embodiment of the present invention mainly includes: cartridge 125, handle 126, and locking assembly 100 of the above-described embodiment. Wherein, both sides of the end of the filter element 125 are respectively provided with a locking groove 127, and the locking part 105 of the lock catch 102 is arranged corresponding to the locking groove 127; the rotating end of the handle 126 is rotatably connected with the end of the filter cartridge 125, and the rotating end of the handle 126 is provided with a pushing portion 128 corresponding to the second abutting portion 108 of the push rod 107, specifically, the second abutting portion 108 is located below the pushing portion 128; the handle 126 has a latching position and a lifting position, and when the handle 126 is in the latching position, corresponding to the latching state of the latch assembly 100, the latching portion 105 of the latch 102 can be snapped into the latching groove 127, as shown in fig. 20; when the handle 126 is at the lifted position, corresponding to the released state of the locking assembly 100, the pushing portion 128 of the handle 126 pushes the second abutting portion 108 of the pushing rod 107 downward, so that the second abutting portion 108 pushes the first abutting portion 106 of the lock buckle 102 outward, and the locking portion 105 of the lock buckle is disengaged from the locking slot 127, as shown in fig. 21.

According to the locking assembly 100 of the embodiment of the invention, the shackle 102 rotates on the lock body 101, the first elastic member 103 is arranged between the lock body 101 and the shackle 102, under the action force of the first elastic member 103, the initial state of the shackle 102 can be a locked state, the push rod 107 positioned on the side surface of the lock body 101 slides along the vertical direction of the central axis of the rotating part 104, the second abutting part 108 of the push rod 107 can push the first abutting part 106 of the shackle 102 to move along the telescopic direction of the first elastic member 103, so that the first abutting part 106 is pushed outwards, and the locking part 105 of the shackle 102 is driven to move outwards in the direction close to the lock body 101 to be switched to a loosened state; in other words, when the second abutting portion 108 of the push rod 107 slides to abut against the first abutting portion 106 of the shackle 102, the first abutting portion 106 of the shackle 102 may be pushed open outwards, so as to drive the locking portion 105 of the shackle 102 to move towards the direction close to the lock body 101, thereby realizing loosening; when the second abutting portion 108 of the push rod 107 slides to be separated from the first abutting portion 106 of the shackle 102, the locking portion 105 of the shackle 102 moves in a direction away from the lock body 101 under the action of the first elastic member 103, so that locking is achieved.

With reference to fig. 17 and fig. 20, when the handle 126 is at the engaging position, the pushing portion 128 of the handle 126 is separated from the second abutting portion 108 of the pushing rod 107, and the second abutting portion 108 of the pushing rod 107 is separated from the first abutting portion 106 of the latch 102 under the action of the second elastic member 109, and at this time, the locking portion 105 of the latch 102 is locked in the locking groove 127 under the action of the first elastic member 103, so as to achieve locking; as shown in fig. 18, 19 and 21, when the handle 126 is at the lifted position, the pushing portion 128 of the handle 126 abuts against the second abutting portion 108 of the push rod 107, the pushing portion 128 pushes the second abutting portion 108 downward to compress the second elastic member 109, and at the same time, the second abutting portion 108 pushes away the first abutting portion 106 of the latch 102 to compress the first elastic member 103, so that the locking portion 105 of the latch 102 is disengaged from the locking groove 127 to be released, and the handle 126 on the filter element 125 is pulled outward, so that the filter element 125 can be taken out.

In a specific opening process, the first wall 119 of the second abutting part 108 of the push rod 107 first abuts against the end surface of the abutting groove 117 of the first abutting part 106 of the lock catch 102 to preliminarily eject the lock catch 102, and the handle 126 is in an inclined lifting state shown in fig. 18; the handle 126 is lifted continuously, then the second wall 120 of the second abutting portion 108 abuts against the inner wall of the abutting groove 117 of the first abutting portion 106 to completely eject the latch 102, the handle 126 is in the horizontally lifted state shown in fig. 19, at this time, the filter cartridge 125 can be pulled out from the filter cartridge installation chamber 133 through the handle 126, after the filter cartridge 125 is taken out, the first elastic member 103 in the locking assembly 100 can restore the latch 102 to the locked state through the acting force, and the second elastic member 109 can restore the push rod 107 to the locked state through the acting force.

According to an embodiment of the present invention, as shown in fig. 15 and 16, the handle 126 is semicircular, both ends of the handle 126 are rotating ends, both rotating ends of the handle 126 are respectively provided with a rotating shaft 146, both sides of the end of the filter element 125 are respectively provided with a rotating hole, and the rotating shaft 146 is connected with the rotating hole 147 to realize the rotation of the handle 126.

According to an embodiment of the present invention, as shown in fig. 8 and 16, the back side (bottom) of the handle 126 is provided with a stop groove 129, the side surface of the latch 102 is provided with a stop portion 130, and the stop portion 130 and the first abutting portion 106 are respectively located at the upper and lower opposite sides of the latch 102. Specifically, when the handle 126 is in the engaging position, the stopping portion 130 can be engaged in the stopping groove 129 of the handle 126 to limit the rotation of the latch 102, thereby ensuring the locking stability; when the handle 126 is in the lifted position, the detent 130 can disengage the detent groove 129 of the handle 126, allowing release. Thus, the stop 130 of the latch 102 of the present invention can be correspondingly snapped into or out of the stop slot 129 depending on the latched or unlatched condition.

According to an embodiment of the present invention, as shown in fig. 4 and 21, an end surface of the second abutment portion 108 of the push rod 107 is formed with a second abutment wall 131, and the second abutment wall 131 is located on a back side of the pushing portion 128 of the knob 126. In this example, second abutment wall 131 is located below pushing portion 128, and pushing portion 128 of handle 126 may be separated from or abut second abutment wall 131 of push rod 107. Specifically, when the handle 126 is in the engaging position, the pushing portion 128 of the handle 126 is separated from the second abutting wall 131, which is a locking state; when the handle 126 is at the lifted position, the pushing portion 128 of the handle 126 abuts against the second abutting wall 131 to push the push rod 107, which is in an open state. According to the invention, the second abutting wall 131 is arranged, so that the contact area between the handle 126 and the push rod 107 can be increased, and the pushing performance is further ensured.

In the filter element structure of the embodiment of the invention, the handle 126 is matched with the locking assembly 100, the push rod 107 of the locking assembly 100 can be pushed by the handle 126 to lock and unlock the locking assembly 100, when the service life of the filter element 125 expires and the filter element 125 needs to be replaced, the purpose of tripping the filter element 125 can be achieved by only lifting the handle 126 on the filter element 125, the filter element to be replaced is pulled out, a new filter element is directly pushed into the filter element installation chamber 133, and the lock catch 102 of the locking assembly 100 can automatically lock the filter element 125 under the action of the first elastic member 103. Therefore, the invention can realize easy and convenient core replacement.

According to another embodiment of the present invention, as shown in fig. 22-26, the present invention further provides an end cap 200 for a reverse osmosis membrane element of a filter element 125, the end cap 200 having a first flow path 202 between the end cap 200 and an inner wall of a housing 201 of the filter element 125, the end cap 200 mainly comprising: a cover member 203 and a tube member 204. Wherein, the cover body 203 is formed with an installation cavity 205, the installation cavity 205 is used for accommodating the end part of the reverse osmosis membrane group 206 of the reverse osmosis membrane element, in this example, as shown in fig. 26, the installation cavity 205 is connected with the upper end of the reverse osmosis membrane group 206, the end surface of the cover body 203 is provided with an installation hole 207 and a wastewater water outlet 208, the installation hole 207 is used for installing a central pipe 209 of the reverse osmosis membrane element, and the wastewater water outlet 208 is used for discharging wastewater filtered by the reverse osmosis membrane group 206; the pipe member 204 is connected to an end surface of the cover member 203 for connection with the inner casing 210 of the filter cartridge 125, and the pipe member 204 communicates with the mounting hole 207 and the waste water outlet hole 208. It will be appreciated that the tube member 204 of the present invention has a hollow interior for facilitating the passage of waste water.

According to the end cap 200 of the embodiment of the invention, a reverse osmosis membrane element for the filter element 125, namely, the end cap 200 is installed inside the filter element 125, and a first flow passage 202 is formed between the end cap 200 and the inner wall of the shell 201 of the filter element 125, so that water can flow conveniently; the end part of the reverse osmosis membrane group 206 of the reverse osmosis membrane element can be accommodated in the installation cavity 205 of the cover body part 203, the reverse osmosis membrane element is connected to the end surface of the cover body part 203 through the pipe part 204 and is connected with the inner shell 210 of the filter element 125, so that the reverse osmosis membrane element is assembled inside the filter element 125, the end surface of the cover body part 203 is provided with an installation hole 207 and a wastewater water outlet hole 208, the installation hole 207 can be provided with a central pipe 209 of the reverse osmosis membrane element, the central pipe 209 can conveniently pass through, and the wastewater water outlet hole 208 can discharge wastewater generated by filtering of the reverse osmosis membrane group 206; the pipe member 204 communicates with the mounting hole 207 and the waste water outlet hole 208. During operation, inflow water such as raw water and tap water enters through the water inlet 211 of the filter element 125, enters the reverse osmosis membrane set 206 through the first flow channel 202 between the end cover 200 and the inner wall of the shell 201 of the filter element 125, drinking water generated by filtration through the reverse osmosis membrane set 206 enters the central tube 209, then flows to the drinking water outlet 212 of the filter element 125 through the central tube 209 and is discharged, and waste water generated by filtration through the reverse osmosis membrane set 206 flows to the waste water outlet 213 of the filter element 125 from the end part of the reverse osmosis membrane set 206 through the waste water outlet hole 208 of the cover part 203 and the inner cavity of the pipe part 204 and is discharged. Therefore, the end cap 200 of the embodiment of the present invention can effectively isolate water paths such as water inlet, wastewater and drinking water inside the filter element 125, avoid mutual interference thereof, improve the filtering effect, and have the characteristics of simple structure, low cost, high reliability, etc.

In the related art, the upper end covers of the reverse osmosis membrane elements are two, the two upper end covers are connected in a sealing mode through the adhesive tapes, one upper end cover is used for being connected with the reverse osmosis membrane elements, the reverse osmosis membrane elements are sealed, the other upper end cover is used for forming a water channel, when the adhesive tapes between the two upper end covers are sealed and invalid, the water channel and the water channel are easy to interfere with each other, the filtering effect is influenced, the reliability is low, the number of parts is large, the cost is high, and the structure is complex.

In order to solve the above technical problems, the cover member 203 and the pipe member 204 of the end cap 200 according to the embodiment of the present invention are integrally formed, and when mounting, only one end cap needs to be mounted on the reverse osmosis membrane element, so that the sealing assembly and the isolation of the internal water path of the reverse osmosis membrane element can be simultaneously achieved.

According to one embodiment of the invention, as shown in fig. 25, at least two waste water outlet holes 208 are arranged around the mounting hole 207 for adjusting the waste water flow, and generally, the more waste water outlet holes 208, the larger the flow.

According to an embodiment of the present invention, the mounting hole 207 is located at the center of the cover member 203, which facilitates mounting of the center tube 209, resulting in a more compact structure.

According to an embodiment of the present invention, the inner wall of the mounting cavity 205 of the cover member 203 is provided with a sealant layer for sealing and connecting with the end of the reverse osmosis membrane group 206, so as to improve the sealing effect, avoid the mutual interference of water paths, and thus improve the filtering effect.

According to an embodiment of the present invention, as shown in fig. 23, the outer wall of the pipe member 204 is provided with a receiving groove 214 for receiving a sealing ring, so that when the pipe member 204 is coupled to the inner casing 210 of the filter cartridge 125, the sealing performance can be improved, and the water paths can be prevented from interfering with each other, thereby improving the filtering effect.

According to an embodiment of the present invention, the receiving groove 214 is at least two to further improve the sealing performance.

According to an embodiment of the present invention, as shown in fig. 24, the cross-sectional area of the cover member 203 is larger than the cross-sectional area of the pipe member 204. Through the design, the reverse osmosis membrane element with larger size can be assembled to improve the filtering effect.

According to an embodiment of the present invention, as shown in fig. 25 and 26, at least two abutting portions 215 are uniformly distributed on the outer wall of the cover body 203 of the end cover 200, and the abutting portions 215 abut against the inner wall of the housing 201 of the filter element 125, so that a circumferential first flow channel 202 is formed between the end cover 200 and the inner wall of the housing 201 of the filter element 125. In this example, the number of the abutting portions 215 is four, but may be other numbers, and may be adjusted according to actual conditions.

Generally, a second flow channel 216 is arranged between the outer side of the reverse osmosis membrane set 206 and the inner wall of the shell 201 of the filter element 125, the second flow channel 216 is communicated with the first flow channel 202, and the inlet water flows through the first flow channel 202 and the second flow channel 216 through the water inlet 211 of the filter element 125 and then flows into the reverse osmosis membrane set 206 in the radial direction for filtering.

According to another embodiment of the present invention, as shown in fig. 26, there is also provided a filter cartridge 125 including the end cap 200 of the above-described embodiment. Specifically, the filter element 125 further includes: the water treatment device comprises an outer shell 201, an inner shell 210 and a reverse osmosis membrane element, wherein the inner shell 210 is arranged at the upper end in the outer shell 201, a water inlet 211, a waste water outlet 213 and a drinking water outlet 212 are arranged on the upper side of the inner shell 210 side by side, a first sleeve 217 and a second sleeve 218 are coaxially arranged on the lower side of the inner shell 210, the first sleeve 217 is positioned on the outer side of the second sleeve 218, the second sleeve 218 is communicated with the drinking water outlet 212, an end cover 200 is arranged in the outer shell 201 and provided with a first flow channel 202 between the end cover 200 and the inner wall of the outer shell 201, the first flow channel 202 is communicated with the water inlet 211, a pipe component 204 of the end cover 200 is embedded in the first sleeve 217 and is in sealing connection through a sealing ring, the pipe component 204 is communicated with the waste water outlet 213, and at the moment, a waste water outlet 208 of a cover body 203 of the end cover 200 is communicated with the waste water outlet 213.

The reverse osmosis membrane element is arranged in the shell 201 and mainly comprises a central pipe 209 and a reverse osmosis membrane group 206, a water passing hole 219 is formed in the pipe wall of the central pipe 209, the upper end of the central pipe 209 penetrates through the mounting hole 207 of the cover body part 203 of the end cover 200 to be embedded into the second sleeve 218 and is in sealed connection through a sealing ring, at the moment, the central pipe 209 is communicated with the drinking water outlet 212, the reverse osmosis membrane group 206 is wound on the pipe wall of the central pipe 209 and forms a second flow channel 216 with the shell 201, and the second flow channel 216 is communicated with the water inlet 211 through the first flow channel 202.

According to an embodiment of the present invention, the cross-sectional area of the water inlet 211 is larger than that of the waste water outlet 208, so as to form a membrane front pressure, increase the pressure at the front end (upper end) of the reverse osmosis membrane set 206, and further improve the reverse osmosis filtration effect.

As shown in fig. 26, the working principle of the filter cartridge 125 according to the embodiment of the present invention substantially includes: the inlet water such as raw water, tap water and the like enters through the water inlet 211 of the filter element 125, flows into the reverse osmosis membrane set 206 for filtering through the first flow channel 202 and the second flow channel 216 in the radial direction, the filtered drinking water enters the central tube 209 through the water through hole 219 of the central tube 209, then flows to the drinking water outlet 212 of the filter element 125 through the central tube 209 and is discharged, and the filtered waste water flows to the waste water outlet 213 of the filter element 125 from the upper end of the reverse osmosis membrane set 206 through the waste water outlet hole 208 of the cover body 203 of the end cover 200 and the inner cavity of the pipe component 204 and is discharged. Therefore, the water paths of the inlet water, the waste water, the drinking water and the like in the filter element 125 are not affected with each other, the filtering effect is good, and the filter element has the characteristics of simple structure, low cost, high reliability and the like.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. An end cap for a reverse osmosis membrane element of a filter cartridge, the end cap having a first flow path between the end cap and an inner wall of a housing of the filter cartridge, the end cap comprising:

the cover body component is provided with an installation cavity, the installation cavity is used for accommodating the end part of a reverse osmosis membrane group of a reverse osmosis membrane element, the end surface of the cover body component is provided with an installation hole and a wastewater water outlet hole, the installation hole is used for installing a central pipe of the reverse osmosis membrane element, and the wastewater water outlet hole is used for discharging wastewater generated by filtering of the reverse osmosis membrane group;

and the pipe component is connected to the end face of the cover body component and is used for being connected with the inner shell of the filter element, and the pipe component is communicated with the mounting hole and the wastewater water outlet hole.

2. The end closure of claim 1, wherein said cap member and said tube member are integrally formed.

3. The end cap of claim 1, wherein at least two of the waste outlet apertures are circumferentially disposed about the mounting aperture.

4. The end cap of claim 1, wherein the mounting cavity of the cover member is provided with a sealant layer on an inner wall thereof for sealing connection with an end of the reverse osmosis membrane stack.

5. An end closure according to claim 1, wherein the outer wall of the tubular member is provided with a receiving groove for mounting a sealing ring.

6. The end cap of claim 5, wherein the receiving recess is at least two.

7. An end cap according to any of claims 1 to 6, wherein the cross-sectional area of the cover member is greater than the cross-sectional area of the tube member.

8. A filter cartridge comprising the end cap of any one of claims 1-7.

9. A water purification unit comprising a housing and the cartridge of claim 8, wherein the cartridge is disposed in the housing.

10. The water purification apparatus of claim 9, further comprising a locking assembly disposed on the housing for locking the filter element.