Filter element

Abstract

The utility model relates to a filter element. The filter element comprises an outer shell, a first partition piece, a second partition piece, a plurality of filter pieces and a water inlet and outlet unit, the outer shell is provided with a raw water inlet and a filtered water outlet; the interior of the outer shell is divided into a containing cavity, a water storage cavity and an air cavity through the first partition piece and the second partition piece, and the water storage cavity is located between the containing cavity and the air cavity. The filtering piece and the water inlet and outlet unit are arranged in the accommodating cavity; the raw water inlet is communicated and connected with the water inlet side of the filtering part, water filtered by the filtering part flows into the water inlet end of the water inlet and outlet unit, the water inlet and outlet unit is communicated and connected with the water storage cavity, and the water outlet end of the water inlet and outlet unit is connected with the filtered water outlet. The filter element disclosed by the utility model can avoid installation inconvenience caused by external connection with a water storage barrel, the whole water purifier is more compact, the installation space is saved, the water drinking health of a user is facilitated, and the use cost of the user is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of water purification, in particular to a filter element. Background Art

[0002] Existing water purifiers mainly use multi-stage filter elements to filter raw water, and the filtered water is then delivered to users for drinking. In this process, in order to avoid the problem of insufficient water production leading to slow water supply to customers, an external water storage tank is generally installed to store the filtered water in the water storage tank in advance. When the user needs water, the water in the water storage tank can be output to the user first, while the filter element produces water to replenish the water in the water storage tank. However, the use of an external water storage barrel will have the following problems: first, the volume of the water storage barrel is generally large, and it needs to occupy a certain space under the kitchen. If the space under the kitchen is relatively narrow, it may even be difficult to place it; secondly, the filtered water is likely to be contaminated again during the process of being transported to the water storage barrel. In order to ensure the healthy use of water by users, the filter component needs to be installed again at the inlet and outlet of the water storage barrel, which undoubtedly increases the cost of the water purifier; in addition, after long-term use, the water storage barrel is prone to breed bacteria and even accumulate dirt, which is not conducive to people's drinking water health. Even though many manufacturers currently provide various cleaning settings for water storage barrels, the cleaning is not thorough enough after all, and the production cost of the entire water purifier is increased. If it is replaced frequently, the user's usage cost will inevitably increase. Utility Model Content

[0003] Based on this, the purpose of the utility model is to provide a filter element. By arranging a water storage chamber and an air chamber inside the filter element, the filtered water after being filtered by the filter element is directly stored in the water storage chamber. The filtered water in the water storage chamber can be directly delivered to the user for use, avoiding the installation inconvenience caused by an external water storage barrel. The entire water purifier is more compact, saving installation space, and only requires one filtration, saving production costs; at the same time, the pressure of the air chamber on the water storage chamber is used to press the water in the water storage chamber out, so that a large flow of water can be discharged by the user; in addition, the water storage chamber can be replaced regularly along with the entire filter element, which is more conducive to the user's drinking health and reduces the user's use cost.

[0004] A filter element, comprising:

[0005] An outer shell, a first partition, a second partition, a plurality of filters and a water inlet and outlet unit;

[0006] The outer shell is provided with a raw water inlet and a filtered water outlet;

[0007] The first partition and the second partition divide the interior of the outer shell into a receiving chamber, a water storage chamber and an air chamber, and the water storage chamber is located between the receiving chamber and the air chamber;

[0008] The filter element and the water inlet and outlet unit are arranged in the accommodating cavity; the raw water inlet is conductively connected to the water inlet side of the filter element, and the water filtered by the filter element flows into the water inlet end of the water inlet and outlet unit. The water inlet and outlet unit is conductively connected to the water storage cavity, and its water outlet end is connected to the filtered water outlet.

[0009] Furthermore, the water inlet and outlet unit includes a water inlet central pipe and a water outlet central pipe;

[0010] The water inlet concentrator is arranged at the water outlet side of the filter element, and a first through hole is opened on the tube wall, and water flows into the water inlet concentrator through the first through hole; the first partition is opened with a connecting hole, and the water outlet end of the water inlet concentrator extends to the water storage chamber through the connecting hole;

[0011] The water outlet concentrating pipe is inserted into the water inlet concentrating pipe, the water inlet end of the concentrating pipe extends to the water storage cavity, and the water outlet end is connected to the water filter outlet.

[0012] Furthermore, the water inlet and outlet unit also includes a non-return structure;

[0013] An abutting annular surface is provided inside the water inlet concentrating pipe, and the non-return structure is arranged between the abutting annular surface and the end of the water outlet end of the water inlet concentrating pipe, so that water flows from the water inlet concentrating pipe into the water storage chamber in one direction.

[0014] Furthermore, the anti-return structure includes a first baffle, a second baffle and an elastic member;

[0015] The first baffle is slidably connected to the water outlet collecting pipe, and its outer diameter is between the inner ring radius and the outer ring radius of the abutting annular surface; the second baffle is fixedly connected to one end of the water outlet collecting pipe close to the water storage chamber, and the elastic member is clamped between the first baffle and the second baffle.

[0016] Furthermore, an abutting annular surface is provided inside the water inlet concentrating pipe, and a spring sheet is provided at one end of the abutting annular surface facing the water outlet cavity;

[0017] The spring sheet is fixedly arranged on the water outlet central pipe, and its outer diameter is between the inner ring radius and the outer ring radius of the abutting annular surface.

[0018] Furthermore, the inner wall of the outer shell is provided with a matching first annular connecting piece and a second annular connecting piece;

[0019] One end of the first annular connecting member is fixedly connected to the inner wall of the outer shell, and one end of the second annular connecting member abuts against the inner wall of the outer shell;

[0020] An edge portion of the second partition is sandwiched between the first annular connecting member and the second annular connecting member.

[0021] Furthermore, a plurality of first positioning holes are arranged at intervals in the circumferential direction near the edge of the second partition;

[0022] The first annular connecting member and the second annular connecting member are provided with a plurality of matching positioning protrusions and second positioning holes at intervals in the circumferential direction;

[0023] The surfaces opposite to the first annular connecting member and the second annular connecting member are provided with matching annular grooves and annular convex clamping members.

[0024] Furthermore, the end of the water inlet end of the water outlet concentrating pipe is connected to a guide pipe, and the inner wall of the water inlet end of the guide pipe is bent away from the center of the guide pipe to form a water guide arc surface.

[0025] Furthermore, a stirring element is provided in the water storage chamber;

[0026] The stirring member includes a rotating part and a connecting rod, the rotating part is connected to the connecting rod rotating shaft, the rotating part is directly opposite to the water outlet end of the water inlet concentrating pipe, and the two ends of the connecting rod are fixedly connected to the inner wall of the water storage cavity.

[0027] Furthermore, a sealing ring is provided on the edge of the second annular connecting member, and the sealing ring abuts against the inner wall of the outer shell.

[0028] The beneficial effects of the utility model are:

[0029] (1) By arranging a water storage chamber and an air chamber inside the filter element, the filtered water after being filtered by the filter element is directly stored in the water storage chamber, and the filtered water in the water storage chamber can be directly delivered to the user for use, avoiding the installation inconvenience caused by an external water storage tank. The entire water purifier is more compact, saving installation space, and only one filtration is required, saving production costs; at the same time, the water in the water storage chamber is pressed out by the pressure of the air chamber on the water storage chamber, so that a large flow of water can be discharged by the user; in addition, the water storage chamber can be replaced regularly along with the entire filter element, which is more conducive to the user's drinking water health and reduces the user's use cost;

[0030] (2) When the water purifier is in standby mode for a long time, the impurity ions in the raw water on the water inlet side of the filter element will gradually diffuse into the filtered water on the water outlet side of the filter element. By providing a check structure or spring near the water outlet end of the water inlet concentrator, it is possible to prevent the filtered water in the water storage chamber from circulating back to the filtered water in the water inlet concentrator for mixing and then returning to the water storage chamber, thereby causing the TDS value of the entire water storage chamber to be too high.

[0031] (3) By designing the first annular connecting member and the second annular connecting member for fixing the second partition, the stability of the connection of the second partition is enhanced, and the sealing performance of the second partition is improved to ensure that the water in the water storage cavity does not penetrate into the air cavity;

[0032] (4) By arranging a guide pipe at the water inlet end of the water outlet collecting pipe, the resistance of water flowing out of the water storage chamber is reduced, thereby increasing the water output and water output speed of the water outlet collecting pipe;

[0033] (5) By arranging a stirring element just below the water outlet end of the water inlet collecting pipe, the impact force of the water flow entering the water storage chamber is used to rotate the rotating part of the stirring element, so that the newly prepared filtered water and the originally stored water in the water storage chamber are mixed more fully, thereby avoiding the long-term retention of water in some areas of the water storage chamber.

[0034] In order to better understand and implement the present invention, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A schematic diagram of the external structure of the filter element provided in an embodiment of the present application;

[0036] Figure 2 A top view of the filter element provided in an embodiment of the present application;

[0037] Figure 3 A front view of the filter element provided in an embodiment of the present application and a cross-sectional view along the AA direction thereof;

[0038] Figure 4 An exploded view of the filter element structure provided in the embodiment of the present application;

[0039] Figure 5 An exploded view of the installation location of the second partition provided in an embodiment of the present application;

[0040] Figure 6 for Figure 3 The enlarged view of point B in the middle;

[0041] Figure 7 A structural diagram of the water inlet and outlet concentrators provided in the embodiment of the present application;

[0042] Figure 8 An installation diagram of a flow guide tube provided for a further embodiment of the present application;

[0043] Fig. 9 An installation diagram of a stirring member provided for a further embodiment of the present application;

[0044] Fig.10 A front view of a rotating portion provided for a further embodiment of the present application.

[0045] In the figure: 10-outer shell; 11-raw water inlet; 12-filter water outlet; 13-accommodating chamber; 14-water storage chamber; 141-stirring member; 1411-rotating part; 1412-connecting rod; 15-air cavity; 20-first partition; 20a-connecting hole; 30-second partition; 30a-first positioning hole; 31-first annular connecting member; 31a-second positioning hole; 31b-annular groove; 32-second annular connecting member; 321-positioning convex ; 322-annular clamping piece; 40-filter element; 41-first filter element; 42-second filter element; 43-third filter element; 50-water inlet and outlet unit; 51-water inlet concentrator; 51a-first through hole; 51b-butt annular surface; 511-water inlet section; 512-water outlet section; 52-water outlet concentrator; 521-clamping piece; 522-flow guide pipe; 53-non-return structure; 531-first baffle; 532-second baffle; 533-elastic member. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0047] In the description of the present invention, it should be noted that the terms "vertical direction", "upper", "lower", "horizontal" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, "first", "second", "third", and "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0048] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, or a connection through an intermediate medium, or the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] Existing water purifiers generally use external water storage tanks to solve the problem of insufficient water output when users use water. However, external water storage tanks have the problems of large space occupation, inconvenient cleaning for long-term use, and high replacement costs. To address this problem, technicians came up with the idea of ​​setting a water storage chamber in the filter element. The filter element filters the tap water and directly transports the water to its own water storage chamber, and the water in the water storage chamber is then provided to the user. At the same time, considering the water pressure when the water in the water storage chamber is output to the user, the sealing of the water storage chamber, and the water quality in the water storage chamber, the internal structure of the filter element needs to be optimized to improve the filter element performance and enhance the user experience.

[0050] Based on this, the utility model provides a filter element, which stores water filtered by the filter element in the water storage chamber by arranging a water storage chamber and an air chamber inside the filter element, thereby avoiding the installation inconvenience caused by an external water storage barrel, and the entire water purifier is more compact and saves installation space; when the user needs water, the pressure of the air chamber on the water storage chamber is used to press the water in the water storage chamber out, so as to realize a large flow of water outflow for the user; and the water storage chamber can be replaced regularly along with the entire filter element, which is more conducive to the user's drinking water health and reduces the user's use cost.

[0051] Please also see Figures 1 to 4 The embodiment of the present application provides a filter element, including an outer shell 10, a first partition 20, a second partition 30, a plurality of filter elements 40 and an inlet and outlet water unit 50. The first partition 20, the second partition 30, the plurality of filter elements 40 and the inlet and outlet water unit 50 are all arranged in the inner cavity of the outer shell 10.

[0052] In this embodiment, the outer shell 10 is provided with a raw water inlet 11 and a filtered water outlet 12. The outer shell 10 is specifically a cylindrical shell, including a side wall, a bottom cover and a top cover, and the raw water inlet 11 and the filtered water outlet 12 are specifically provided on the top cover, which is convenient for the installation of the entire filter element and the connection of the user's water pipe and faucet.

[0053] The first partition 20 and the second partition 30 are arranged in the inner cavity of the outer shell 10. The first partition 20 and the second partition 30 divide the inner cavity of the outer shell 10 into a receiving cavity 13, a water storage cavity 14 and an air cavity 15. The receiving cavity 13 and the air cavity 15 are arranged at both ends of the inner cavity of the outer shell 10, and the water storage cavity 14 is arranged between the receiving cavity 13 and the air cavity 15. More specifically, the receiving cavity 13 is located at one end of the inner cavity of the outer shell 10 facing the top cover, and the air cavity 15 is located at one end of the inner cavity of the outer shell 10 facing the bottom cover. The receiving cavity 13 and the water storage cavity 14 are separated by the first partition 20, and the water storage cavity 14 and the air cavity 15 are separated by the second partition 30. The receiving cavity 13 is used to install the filter element 40 and the water inlet and outlet unit 50, the water storage cavity 14 is used to store filtered water after being filtered by the filter element 40, and the air cavity 15 is used to store gas.

[0054] The shape and size of the first partition 20 match the inner wall of the outer shell 10 so that its edge is fixed to the inner wall of the outer shell 10. The connection between the first partition 20 and the inner wall of the outer shell 10 needs to be sealed. It can be sealed with rubber with good adsorption properties, or it can be integrated. It is preferably integrated. On the one hand, it can support the components installed in the accommodating chamber 13 to improve the stability of the installation. On the other hand, it can better separate the raw water before filtration and the filtered water after filtration to obtain purer filtered water. The first partition 20 is provided with a connecting hole 20a, and the accommodating chamber 13 is connected to the water storage chamber 14 through the connecting hole 20a.

[0055] The second partition 30 is made of elastic material, and its shape and size match the inner wall of the outer shell 10 so that its edge is fixed to the inner wall of the outer shell 10 .

[0056] Please also see Figure 5 and Figure 6 In this embodiment, in order to facilitate the connection of the second partition 30 and ensure the sealing between the water storage chamber 14 and the air chamber 15 to prevent water from penetrating into the air chamber 15, the second partition 30 is connected by a snap connection. Specifically, the inner wall of the outer shell 10 is provided with a matching first annular connector 31 and a second annular connector 32. One end of the first annular connector 31 is fixedly connected to the inner wall of the outer shell 10, preferably connected as a whole, and the other end extends toward the center direction of the inner part of the outer shell 10; one end of the second annular connector 32 abuts against the inner wall of the outer shell 10, and the other end extends toward the center direction of the inner part of the outer shell 10. The edge portion of the second partition 30 is clamped between the first annular connector 31 and the second annular connector 32. It should be noted that the second annular connector 32 can move along the inner wall of the outer shell 10 to facilitate the clamping of the edge of the second partition 30.

[0057] In order to further fix the second partition 30, a plurality of first positioning holes 30a are arranged at intervals in the circumferential direction near the edge of the second partition 30, and the second annular connector 32 is matched with a plurality of positioning protrusions 321 arranged at intervals in the circumferential direction, and the positioning protrusions 321 are arranged on the opposite surface of the second annular connector 32 and the first annular connector 31, and the first annular connector 31 is provided with a plurality of second positioning holes 31a at intervals in the circumferential direction, and the second positioning holes 31a are arranged on the opposite surface of the first annular connector 31 and the second annular connector 32, or the first positioning protrusions 321 are arranged on the first annular connector 31, and the second positioning holes 31a are arranged on the second annular connector 32. In addition, the opposite surface of the first annular connector 31 and the second annular connector 32 is provided with a matching annular groove 31b and an annular clamping member 322. In the installed state, the positioning protrusion 321 passes through the first positioning hole 30a and is clamped in the second positioning hole 31a, and the edge of the second partition 30 is clamped in the annular groove 31b with the annular clamping member 322. Through the above multiple clamping methods, not only can the second partition 30 be firmly connected, but also the sealing between the water storage chamber 14 and the air chamber 15 can be ensured.

[0058] Furthermore, a sealing ring is provided around the edge of the second annular connecting member 32 , and the sealing ring abuts against the inner wall of the outer shell 10 to further improve the sealing performance between the water storage cavity 14 and the air cavity 15 .

[0059] Furthermore, since the first partition 20 and the second partition 30 are in direct contact with the filtered water, the first partition 20 and the second partition 30 are both made of materials suitable for human health. The first partition 20 is preferably made of stainless steel, such as stainless steel 304, 316, etc., and the second partition 30 is preferably butyl rubber, which not only has good elasticity but is also non-toxic and odorless. In addition, in order to avoid dangerous accidents such as explosion of the gas in the air cavity 15, the gas filled in the air cavity 15 is an inert gas, such as nitrogen, argon, etc. It can be understood that the size of the water storage chamber 14 can be determined according to the water storage capacity requirements of different users, and the size of the water storage chamber 14 can be changed by changing the connection position of the second partition 30 in the internal cavity of the outer shell 10.

[0060] Accordingly, the elastic deformation of the second partition 30 changes with the amount of water in the water storage chamber 14, causing the air pressure of the air chamber 15 to change. When the amount of water in the water storage chamber 14 increases, the second partition 30 deforms toward the air chamber 15 to compress the gas in the air chamber 15. When the water in the water storage chamber 14 needs to be used, the gas in the air chamber 15 exerts pressure on the water in the water storage chamber 14 due to the compression, so that the water is pressed out of the water storage chamber 14; when the amount of water in the water storage chamber 14 gradually decreases with the use of the user, the second partition 30 gradually recovers toward the side of the accommodating chamber 13, and the air pressure of the air chamber 15 decreases accordingly. At this time, the filter element re-supplies water to the water storage chamber 14.

[0061] See also Figure 4 , the filter element 40 is arranged in the accommodating chamber 13, and the raw water inlet 11 is connected to the water inlet side of the filter element 40. The filter element 40 can be provided with only one filter element for primary filtration, or multiple filter elements for multi-stage filtration according to different user needs, so as to obtain better quality water. In this embodiment, three filter elements 40 are provided, namely the first filter element 41, the second filter element 42 and the third filter element 43. The first filter element 41 specifically adopts folded PP cotton, which is used for primary filtration of raw water, and can intercept sediment, rust, insect cysts, suspended matter, and large particle rate substances. The second filter element 42 specifically adopts sintered carbon rod, which is used for secondary filtration of water filtered by the first filter element 41, and can adsorb particulate matter, residual chlorine, some organic matter, discoloration, and odor to improve the taste; the third filter element 43 specifically adopts inner layer PP cotton, which is used for tertiary filtration of water after the second filter element 42, and can filter out carbon particles. The first filter element 41, the second filter element 42 and the third filter element 43 are all cylindrical and are arranged in sequence from the outside to the inside, with adjacent side surfaces abutting against each other. A first water flow gap is formed between the outer side surface of the first filter element 41 and the inner wall of the outer shell 10, and the raw water inlet 11 is connected to the first water flow gap. Raw water enters the first water flow gap from the raw water inlet 11. Since the first filter element 41 is cylindrical, preferably, there are multiple raw water inlets 11, which are arranged circumferentially on the top cover, so that raw water can flow from multiple raw water inlets 11 to the first water flow gaps at different positions at the same time, thereby improving the filtration efficiency.

[0062] The water inlet and outlet unit 50 is arranged in the accommodating chamber 13, the raw water inlet 11 is connected to the water inlet side of the filter element 40, the water filtered by the filter element 40 flows into the water inlet end of the water inlet and outlet unit 50, the water inlet and outlet unit 50 is connected to the water storage chamber 14, and its water outlet end is connected to the filtered water outlet 12. Specifically, the water inlet and outlet unit 50 includes a water inlet concentrator 51 and a water outlet concentrator 52. The water inlet concentrator 51 is arranged on the water outlet side of the filter element 40, and a first through hole 51a is opened on its pipe wall. The water filtered by the filter element 40 flows into the water inlet concentrator 51 through the first through hole 51a, and the water outlet end of the water inlet concentrator 51 extends to the water storage chamber 14 through the connecting hole 20a, thereby, the water filtered by the filter element 40 enters the water storage chamber 14 through the water inlet concentrator 51. The outlet concentrating pipe 52 is inserted into the inlet concentrating pipe 51, and its inlet end extends to the water storage chamber 14, and its outlet end is connected to the filtered water outlet 12. Preferably, the outer diameter of the outlet concentrating pipe 52 is smaller than the inner diameter of the inlet concentrating pipe 51, and the filter element 40, the inlet concentrating pipe 51 and the outlet concentrating pipe 52 are coaxially arranged in sequence from outside to inside.

[0063] Furthermore, when the water purifier is in standby mode for a long time, the impurity ions in the raw water on the water inlet side of the filter element 40 will gradually diffuse into the water on the water outlet side of the filter element 40. In order to prevent the water in the water storage chamber 14 from circulating back to the filtered water in the water inlet concentrator 51, and then returning to the water storage chamber 14 after mixing, thereby causing the TDS value of the entire water storage chamber 14 to be high, the water inlet and outlet unit 50 also includes a non-return structure 53. The interior of the water inlet concentrator 51 is provided with an abutting annular surface 51b, and the non-return structure 53 is arranged between the abutting annular surface 51b and the end of the water outlet end of the water inlet concentrator 51, so that the water flows from the water inlet concentrator 51 into the water storage chamber 14 in one direction.

[0064] Please also see Figure 4 and Figure 7 The water inlet concentrator 51 includes a water inlet section 511 and a water outlet section 512. The first through hole 51a is provided in the water inlet section 511. One end of the water outlet section 512 is conductively connected to the water inlet section 511, and the other end extends to the water storage chamber 14. In this embodiment, the inner diameter of the water outlet section 512 is greater than the inner diameter of the water inlet section 511. At this time, the end of the end where the water inlet section 511 and the water outlet section 512 are connected serves as the abutting annular surface 51b. In another embodiment, the inner diameter of the water outlet section 512 is equal to the inner diameter of the water inlet section 511. A ring sheet is provided on the inner wall of the connection between the water inlet section 511 and the water outlet section 512. The side of the ring sheet facing the water inlet concentrator 51 serves as the abutting annular surface 51b.

[0065] Specifically, the anti-return structure 53 includes a first baffle 531, a second baffle 532 and an elastic member 533. The first baffle 531 and the second baffle 532 are both circular pieces. The first baffle 531 is close to the abutting annular surface 51b and is slidably connected to the outlet water collecting pipe 52 so that it can slide along the outlet water collecting pipe 52. At the same time, the outer diameter of the first baffle 531 is between the inner ring radius and the outer ring radius of the abutting annular surface 51b. The second baffle 532 is fixed to one end of the outlet water collecting pipe 52 close to the water storage chamber 14. Preferably, the outer diameter of the second baffle 532 is equal to the inner diameter of the inlet water collecting pipe 51 and is fixed to the inner wall of the inlet water collecting pipe 51. A second through hole is opened on the second baffle 532, and the water flows from the second through hole to the water storage chamber 14. Through the double fixing described above, the second baffle 532 can be prevented from loosening due to the impact of the water flow. In another embodiment, the outer diameter of the second baffle 532 is smaller than the inner diameter of the water inlet concentrated pipe 51, so that the water can flow into the water storage chamber 14 through the gap between the second baffle 532 and the water inlet concentrated pipe 51. The elastic member 533 is sandwiched between the first baffle 531 and the second baffle 532, and the elastic member 533 is preferably a spring, and the two ends of the spring are respectively abutted against the first baffle 531 and the second baffle 532. In the blocked state, the first baffle 531 abuts against the abutting annular surface 51b, and the water pressure on both sides of the first baffle 531 remains balanced and is blocked on both sides of the abutting annular surface 51b; in the water making state, the water pressure on the side of the first baffle 531 located at the water inlet section 511 is greater than the water pressure on the water outlet end 512, and the elastic member 533 is compressed by the pressure, and the first baffle 531 forms a gap with the abutting annular surface 51b. At this time, since the inner diameter of the first baffle 531 is smaller than the inner diameter of the water outlet section 512, a second water flow gap is formed between the first baffle 531 and the inner wall of the water outlet section 512. In this way, water flows from the water inlet concentrator 51 through the second water flow gap and then passes through the second through hole into the water storage chamber 14. At this time, the water pressure in the water storage chamber 14 compresses the gas in the air chamber 15, and the gas applies an opposite pressure to the water storage chamber 14. As the amount of water in the water storage chamber 14 continues to increase, the sum of the water pressure in the water storage chamber 14 and the pressure applied by the air chamber 15 gradually increases. When the sum of the water pressure in the water storage chamber 14 and the air pressure applied by the air chamber 15 is greater than the water pressure on the side of the first baffle 531 located on the water outlet section 512, the first baffle 531 abuts against the abutting annular surface 51b again. When the user is not using water, the water in the water storage chamber 14 is blocked in the water storage chamber 14 by the first baffle 531 and is difficult to enter the water inlet section 511; when the user is using water, the water in the water storage chamber 14 is pressed out of the user end from the water outlet collecting pipe 52 by the force exerted by the gas in the air chamber 15 on the second partition 30, so that the user can obtain a continuous large flow of water. As the water in the water storage chamber 14 is pressed out, the pressure gradually decreases, and the filter element 40 starts to filter water, and the filtered water enters the water inlet storage chamber 14 by opening the first baffle 531, and so on.

[0066] In another embodiment, in order to prevent the water circulation in the water storage chamber 14 from backflowing into the filtered water of the water inlet concentrated pipe 51, a spring is provided at one end of the abutting annular surface 51b facing the water outlet chamber 14. The spring is a circular spring, one end of which is fixed to the water outlet concentrated pipe 52, and the other end is an elastic end, which can be opened or compressed when subjected to force. Similarly, the outer diameter of the spring is between the inner ring radius and the outer ring radius of the abutting annular surface 51b. In the blocked state, the elastic end of the spring abuts the abutting annular surface 51b. When the water pressure on one side of the water inlet section 511 is greater than the water pressure on one side of the water outlet section 512, the elastic end of the spring is opened, and at this time, the water inlet section 511 and the water outlet section 512 are in an open state, and a third water gap is formed between the spring and the abutting annular surface 51b, and the water flows from the water inlet section 511 through the third water gap into the water outlet section 512, and then into the water storage chamber 14.

[0067] See also Figure 7 Furthermore, in order to facilitate the fixing of the outlet concentrated pipe 52, the outlet concentrated pipe 52 is fixed to the inlet concentrated pipe 51 by a snap connection. Specifically, a clamping member 521 is sleeved on the outer periphery of the outlet concentrated pipe 52, and a clamping groove matching the clamping member 521 is provided on the abutting annular surface 51b, and the clamping member 521 is clamped in the clamping groove.

[0068] See also Figure 8 In a further embodiment, in order to reduce the resistance of water flow when it flows out of the water storage chamber 14, thereby increasing the water output and water output speed of the water outlet collecting pipe 52, the end of the water inlet end of the water outlet collecting pipe 52 is further connected with a guide pipe 522. The guide pipe 522 is in the same straight line as the central axis of the water outlet collecting pipe 52, and the inner wall of the water inlet end is bent away from the center of the guide pipe 522 to form a water guide arc surface, which can reduce the friction resistance of water flow and facilitate the rapid flow of water.

[0069] See also Fig. 9 and Fig.10 In a further embodiment, in order to make the newly prepared filtered water mix more fully with the filtered water originally stored in the water storage chamber 14, thereby preventing the water in a part of the water storage chamber 14 from being retained in the water storage chamber 14 for a long time, a stirring member 141 is provided in the water storage chamber 14. The stirring member 141 includes a rotating part 1411 and a connecting rod 1412, and the rotating part 1411 is connected to the connecting rod 1412 by a rotating shaft. The rotating part 1411 is provided with a plurality of stirring blades arranged in a circular axis, which are used to stir the water when the rotating part 1411 rotates. The rotating part 1411 is directly opposite to the water outlet end of the water inlet concentrator 51, and the two ends of the connecting rod 1412 are fixedly connected to the inner wall of the water storage chamber 14. Therefore, when water flows into the water storage chamber 14 from the water inlet concentrator 51, the impact force of the water flow drives the rotating part 1411 to rotate, and the rotating part 1411 stirs the water in the water storage chamber 14.

[0070] Compared with the prior art, the beneficial effects of the technical solution of this application are:

[0071] (1) By arranging a water storage chamber and an air chamber inside the filter element, the filtered water after being filtered by the filter element is directly stored in the water storage chamber, and the filtered water in the water storage chamber can be directly delivered to the user for use, avoiding the installation inconvenience caused by an external water storage tank. The entire water purifier is more compact, saving installation space, and only one filtration is required, saving production costs; at the same time, the water in the water storage chamber is pressed out by the pressure of the air chamber on the water storage chamber, so that a large flow of water can be discharged by the user; in addition, the water storage chamber can be replaced regularly along with the entire filter element, which is more conducive to the user's drinking water health and reduces the user's use cost;

[0072] (2) When the water purifier is in standby mode for a long time, the impurity ions in the raw water on the water inlet side of the filter element will gradually diffuse into the filtered water on the water outlet side of the filter element. By providing a check structure or spring near the water outlet end of the water inlet concentrator, it is possible to prevent the filtered water in the water storage chamber from circulating back to the filtered water in the water inlet concentrator for mixing and then returning to the water storage chamber, thereby causing the TDS value of the entire water storage chamber to be too high.

[0073] (3) By designing the first annular connecting member and the second annular connecting member for fixing the second partition, the stability of the connection of the second partition is enhanced, and the sealing performance of the second partition is improved to ensure that the water in the water storage cavity does not penetrate into the air cavity;

[0074] (4) By arranging a guide pipe at the water inlet end of the water outlet collecting pipe, the resistance of water flowing out of the water storage chamber is reduced, thereby increasing the water output and water output speed of the water outlet collecting pipe;

[0075] (5) By arranging a stirring element just below the water outlet end of the water inlet collecting pipe, the impact force of the water flow entering the water storage chamber is used to rotate the rotating part of the stirring element, so that the newly prepared filtered water and the originally stored water in the water storage chamber are mixed more fully, thereby avoiding the long-term retention of water in some areas of the water storage chamber.

[0076] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and the utility model is also intended to include these modifications and modifications.

Claims

1. A filter element, characterized in that: include: An outer shell, a first partition, a second partition, a plurality of filters and a water inlet and outlet unit; The outer shell is provided with a raw water inlet and a filtered water outlet; The first partition and the second partition divide the interior of the outer shell into a receiving chamber, a water storage chamber and an air chamber, and the water storage chamber is located between the receiving chamber and the air chamber; The filter element and the water inlet and outlet unit are arranged in the accommodating cavity; the raw water inlet is conductively connected to the water inlet side of the filter element, and the water filtered by the filter element flows into the water inlet end of the water inlet and outlet unit. The water inlet and outlet unit is conductively connected to the water storage cavity, and its water outlet end is connected to the filtered water outlet.

2. The filter element according to claim 1, characterized in that: The water inlet and outlet unit includes a water inlet central pipe and a water outlet central pipe; The water inlet concentrator is arranged at the water outlet side of the filter element, and a first through hole is opened on the tube wall, and water flows into the water inlet concentrator through the first through hole; the first partition is opened with a connecting hole, and the water outlet end of the water inlet concentrator extends to the water storage chamber through the connecting hole; The water outlet concentrating pipe is inserted into the water inlet concentrating pipe, the water inlet end of the concentrating pipe extends to the water storage cavity, and the water outlet end is connected to the water filter outlet.

3. The filter element according to claim 2, characterized in that: The water inlet and outlet unit also includes a non-return structure; An abutting annular surface is provided inside the water inlet concentrating pipe, and the non-return structure is arranged between the abutting annular surface and the end of the water outlet end of the water inlet concentrating pipe, so that water flows from the water inlet concentrating pipe into the water storage chamber in one direction.

4. The filter element according to claim 3, characterized in that: The anti-return structure comprises a first baffle, a second baffle and an elastic member; The first baffle is slidably connected to the water outlet collecting pipe, and its outer diameter is between the inner ring radius and the outer ring radius of the abutting annular surface; the second baffle is fixedly connected to one end of the water outlet collecting pipe close to the water storage chamber, and the elastic member is clamped between the first baffle and the second baffle.

5. The filter element according to claim 2, characterized in that: The interior of the water inlet central pipe is provided with an abutting annular surface, and one end of the abutting annular surface facing the water storage cavity is provided with an elastic sheet; The spring sheet is fixedly arranged on the water outlet central pipe, and its outer diameter is between the inner ring radius and the outer ring radius of the abutting annular surface.

6. The filter element according to any one of claims 2 to 5, characterized in that: The inner wall of the outer shell is provided with a first annular connecting piece and a second annular connecting piece that match each other; One end of the first annular connecting member is fixedly connected to the inner wall of the outer shell, and one end of the second annular connecting member abuts against the inner wall of the outer shell; An edge portion of the second partition is sandwiched between the first annular connecting member and the second annular connecting member.

7. The filter element according to claim 6, characterized in that: A plurality of first positioning holes are arranged at intervals in the circumferential direction near the edge of the second partition; The first annular connecting member and the second annular connecting member are provided with a plurality of matching positioning protrusions and second positioning holes at intervals in the circumferential direction; The surfaces opposite to the first annular connecting member and the second annular connecting member are provided with matching annular grooves and annular convex clamping members.

8. The filter element according to any one of claims 2 to 5, characterized in that: The end of the water inlet end of the water outlet concentrating pipe is connected with a guide pipe, and the inner wall of the water inlet end of the guide pipe is bent away from the center of the guide pipe to form a water guide arc surface.

9. The filter element according to any one of claims 2 to 5, characterized in that: A stirring element is provided in the water storage chamber; The stirring member includes a rotating part and a connecting rod, the rotating part is connected to the connecting rod rotating shaft, the rotating part is directly opposite to the water outlet end of the water inlet concentrating pipe, and the two ends of the connecting rod are fixedly connected to the inner wall of the water storage cavity.

10. The filter element according to claim 7, characterized in that: A sealing ring is provided on the edge of the second annular connecting member, and the sealing ring abuts against the inner wall of the outer shell.

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