Water purification filter element capable of being switched for use

Abstract

The water purification filter element comprises a filter bottle with an opening in the upper side and a bottle cap installed on the filter bottle in a sealed mode, a filter element is placed in the filter bottle, the bottle cap is provided with a water inlet and a water outlet, and an installation cavity communicated with the water inlet and the water outlet is formed in the center of the bottle cap. A filter hole communicated with the filter bottle is formed in the bottom of the mounting cavity, and a switching valve for switching the filter hole and the water outlet is hermetically mounted in the mounting cavity, so that a user can flexibly switch water paths according to actual requirements, and water flow is guided to the water outlet to be directly discharged in water use scenes such as dish washing and ground flushing without purification, so that the loss of the filter element is effectively reduced, and the service life of the filter element is prolonged. The service life of the filter element is prolonged, the replacement frequency and the use cost of the filter element are greatly reduced, meanwhile, the overall operation load of the water purifier can be reduced, the aging speed of internal components of the water purifier is effectively delayed, the service life of the whole machine is prolonged, the equipment maintenance and replacement frequency is reduced, and the balance between the water purification requirement and the equipment maintenance cost is truly achieved.

Description

Technical Field

[0001] This utility model relates to a water purifier, and more particularly to a switchable water filter cartridge. Background Technology

[0002] In modern urban homes where space is at a premium, small kitchens are extremely cramped, typically equipped with only one faucet to handle all water usage throughout the day, from rinsing rice and cooking porridge in the morning and washing fruits and vegetables to rinsing pots and pans and wiping greasy stovetops in the evening. When residents choose to install a water purifier to improve water quality, they often directly replace the existing faucet due to space constraints. However, this installation method brings a series of problems: daily operations that do not require filtration, such as washing dishes and rinsing the floor, must use purified water, which not only significantly increases the frequency of filter replacement and operating costs, but also shortens the lifespan of the water purifier due to overload. This creates a contradiction between the original intention of improving water quality and actual use, turning the device, which was supposed to improve the quality of life, into a troublesome "consumable hog." Summary of the Invention

[0003] In order to overcome the shortcomings of the existing technology, this utility model provides a switchable water purification filter element.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A switchable water purification filter cartridge includes a filter bottle with an opening at the top and a cap sealed on the filter bottle. The filter cartridge is placed inside the filter bottle. The cap has an inlet and an outlet. The center of the cap has an installation cavity communicating with the inlet and outlet. The bottom of the installation cavity has a filter hole communicating with the filter bottle. A switching valve for switching the filter hole and the outlet is sealed inside the installation cavity.

[0006] The switching valve includes a mounting base, in which a movable rod that slides up and down by rotation is installed. The upper end of the movable rod extends from the top surface of the mounting base and is fixedly mounted with a lever. The lower end of the movable rod is fixed with a sealing element for blocking either the filter hole or the outlet.

[0007] The bottom of the mounting base is provided with a recessed cavity that can be sealed or opened by the sealing element, and the side wall of the recessed cavity is provided with a straight discharge hole that communicates with the water outlet.

[0008] The top surface of the mounting base is provided with a through hole, and a metal sleeve is sealed and installed in the through hole. The metal sleeve is provided with an internal thread, and the movable rod is provided with an external thread corresponding to the internal thread. The external thread is threadedly connected to the internal thread.

[0009] The mounting cavity is provided with a positioning groove, and the mounting base is provided with a positioning block corresponding to the positioning groove, the positioning block being slidably inserted into the positioning groove.

[0010] The beneficial effects of this utility model are as follows: This utility model includes a filter bottle with an opening on the upper side and a bottle cap sealed and installed on the filter bottle. A filter element is placed inside the filter bottle. The bottle cap is provided with an inlet and an outlet. The center of the bottle cap is provided with an installation cavity communicating with the inlet and outlet. The bottom of the installation cavity is provided with a filter hole communicating with the filter bottle. A switching valve for switching the filter hole and the outlet is sealed and installed in the installation cavity. Users can flexibly switch the water path according to actual needs. In water use scenarios that do not require purification, such as washing dishes and rinsing the floor, the water flow is directed to the outlet for direct discharge, effectively reducing the wear of the filter element, extending the service life of the filter element, and significantly reducing the frequency of filter element replacement and usage costs. At the same time, it can also reduce the overall operating load of the water purifier, effectively slow down the aging rate of the internal components of the water purifier, extend the service life of the whole machine, reduce the frequency of equipment maintenance and replacement, and truly achieve a balance between water purification needs and equipment maintenance costs. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0012] Figure 1 This is a cross-sectional schematic diagram of the present invention;

[0013] Figure 2 This is an exploded view of the switching valve;

[0014] Figure 3 This is one of the waterway diagrams of this utility model;

[0015] Figure 4 This is the second schematic diagram of the waterway of this utility model;

[0016] Figure 5 This is a cross-sectional view of the bottle cap. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0018] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0019] The following describes some embodiments of the present invention with reference to the accompanying drawings.

[0020] Reference Figure 1-5A switchable water purifier filter cartridge includes a filter bottle 1 with an open top and a cap 2 sealed on the filter bottle 1. A filter cartridge 3 is placed inside the filter bottle 1. The cap 2 has an inlet 4 and an outlet 5. A mounting cavity 6, communicating with the inlet 4 and outlet 5, is located at the center of the cap 2. A filter hole 7, communicating with the filter bottle 1, is located at the bottom of the mounting cavity 6. A switching valve 8, sealingly installed within the mounting cavity 6, allows users to flexibly switch water paths according to actual needs. In scenarios where water purification is not required, such as washing dishes or rinsing floors, the water flow can be directed to the outlet 5 for direct discharge, effectively reducing filter cartridge wear, extending filter cartridge lifespan, significantly reducing filter cartridge replacement frequency and operating costs. Simultaneously, it reduces the overall operating load of the water purifier, effectively slowing down the aging rate of internal components, extending the overall machine lifespan, reducing equipment maintenance and replacement frequency, and truly achieving a balance between water purification needs and equipment maintenance costs.

[0021] This product can be used alone. The filter element 3 is a composite filter element, which can meet the needs of daily activities such as washing rice and cooking porridge, and cleaning fruits and vegetables, but does not meet the requirements for direct drinking. It can also be used as the first stage filter of a multi-stage water purifier. The filter element 3 can be made of PP cotton or other materials commonly used in the first stage filter element of water purifiers. It is then connected in sequence to the second stage filter (such as granular activated carbon filter element), the third stage filter (such as sintered activated carbon filter element), the fourth stage filter (RO membrane), and the fifth stage filter (post-activated carbon filter element). When water is used in scenarios where purification is not required, such as washing dishes or rinsing the floor, the water flow can be directed to the outlet 5 for direct discharge, which can reduce the wear of all filter elements and extend their service life. In this structure, a three-way pipe needs to be connected to the outlet 5. One outlet of the three-way pipe is connected to the second stage filter, and the other outlet is directly connected to the faucet. In this structure, a dual-inlet faucet is used, with one outlet connected to the outlet of the fifth stage filter and the other directly connected to the three-way pipe.

[0022] The switching valve 8 includes a mounting base 9, in which a movable rod 10 is installed that slides up and down by rotation. The upper end of the movable rod 10 extends from the top surface of the mounting base 9 and is fixedly mounted with a lever part 11. The lower end of the movable rod 10 is fixed with a sealing element 12 for blocking either the filter hole 7 or the water outlet 5.

[0023] The mounting base 9 and the mounting cavity 6 can be connected by threads. During installation, a seal can be provided by wrapping with PTFE tape. In this structure, the switching valve 8 can be replaced.

[0024] The bottom of the mounting base 9 is provided with a recess 13 that is sealed or opened by the sealing element 12, and the side wall of the recess 13 is provided with a straight discharge hole 14 that communicates with the water outlet 5.

[0025] The top surface of the mounting base 9 is provided with a through hole 16, and a metal sleeve 17 is sealed and installed inside the through hole 16. Adhesive can be applied to the through hole 16 before pressing the metal sleeve 17 in, thereby improving the sealing performance. The metal sleeve 17 is provided with an internal thread, and the movable rod 10 is provided with an external thread corresponding to the internal thread. The external thread is threadedly connected to the internal thread. The movable rod 10 can also be made of metal, such as copper. The fact that both the metal sleeve 17 and the movable rod 10 are made of metal can improve the service life of the switching valve 8. At the same time, the external and internal threads machined from metal have higher precision, and when the two are combined, they can have a better sealing effect.

[0026] Furthermore, both the mounting base 9 and the bottle cap 2 need to be equipped with positioning marks 18. When the positioning marks 18 of the two are aligned, the straight discharge hole 14 will be aligned with the channel of the water outlet 5.

[0027] For example Figure 5 The channel shown in 19 is designed as a through hole structure due to the limited space of the mold during manufacturing. Then, it is sealed with a plug 20. This manufacturing process is commonly used in the manufacture of water pipes and is considered existing technology.

[0028] Furthermore, the straight discharge hole 14 can be a horizontal strip hole, increasing the area of ​​the straight discharge hole 14, so that the straight discharge hole 14 can be better aligned with the channel of the water outlet 5, while the part that is misaligned with the channel of the water outlet 5 will be blocked by the mounting cavity 6, so that there will be no water leakage.

[0029] When the lever 11 is turned, the movable rod 10 rotates synchronously. Through the cooperation of the external thread and the internal thread, the movable rod 10 can move up and down, thereby blocking either the filter hole 7 or the water outlet 5 (actually the opening of the cavity 13).

[0030] Furthermore, the top surface of the mounting base 9 is provided with an indicator to remind the user whether the water is filtered water or direct tap water.

[0031] If the lever 11 is not turned to the position corresponding to the symbol, the filter hole 7 or the water outlet 5 will be opened at the same time, which is not allowed. Therefore, a clear warning label needs to be affixed to the front of the bottle cap 2.

[0032] Alternatively, by increasing the pitch of the external and internal threads, the movable rod 10 can slide up or down a sufficient distance by only bending a small angle (such as 15°) to achieve different water path switching. Or, by reducing the distance between the seal 12 and the opening of the filter hole 7 or cavity 13, the opening of the filter hole 7 or cavity 13 can be sealed by only moving the seal 12 by 1-2 mm.

[0033] The mounting cavity 6 is provided with a positioning groove, and the mounting base 9 is provided with a positioning block 15 corresponding to the positioning groove. The positioning block 15 is slidably inserted into the positioning groove. When this structure is adopted, the mounting base 9 cannot be fixed by threaded connection, but can only be fixed by fastening. An adhesive layer is applied to improve the sealing effect. In this structure, the switching valve 8 cannot be replaced, and the bottle cap 2 can only be replaced as a whole.

[0034] like Figure 4 As shown in Figure A, the water path for filtration is as follows: after entering through the inlet 4, the water flows into the mounting cavity 6, then through the gap between the seal 12 and the filter hole 7 to the filter bottle 1, and after being filtered by the filter element 3, it is finally discharged from the outlet 5.

[0035] like Figure 5 As shown in B, the water path is a straight waterway. After entering from the inlet 4, the water flows into the mounting cavity 6, then enters the cavity 13 through the gap between the seal 12 and the opening of the cavity 13, and then exits from the outlet 5 through the straight discharge hole 14.

[0036] When this product is switched to the direct drainage path, a small portion of the water entering the outlet 5 channel will mix with the filtered water that has already been filtered, causing it to become re-contaminated. However, the degree of contamination is not significant, and it can still be used normally for washing vegetables and rinsing rice. In cases where high water quality is required, such as boiling water or cooking rice, where the water will be ingested by the human body, it is advisable to collect the initial small amount of water in a container after switching to the filtered water path and use it for washing vegetables and rinsing rice.

[0037] In this invention, the term "multiple" refers to two or more items unless otherwise expressly defined. The term "and / or" as used herein includes any and all combinations of one or more of the related listed items. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0038] It should be noted that when a component is referred to as being "assembled on," "mounted on," "fixed to," or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0039] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A switchable water purification filter cartridge, comprising a filter bottle (1) with an opening at the top and a cap (2) sealed and installed on the filter bottle (1), wherein a filter cartridge (3) is placed inside the filter bottle (1), and the cap (2) is provided with an inlet (4) and an outlet (5), characterized in that The bottle cap (2) has a mounting cavity (6) at its center that communicates with the water inlet (4) and the water outlet (5). The bottom of the mounting cavity (6) has a filter hole (7) that communicates with the filter bottle (1). The mounting cavity (6) is sealed with a switching valve (8) that switches between the filter hole (7) and the water outlet (5).

2. The switchable water purification filter element according to claim 1, characterized in that... The switching valve (8) includes a mounting base (9), in which a movable rod (10) is installed that slides up and down by rotation. The upper end of the movable rod (10) extends from the top surface of the mounting base (9) and is fixedly mounted with a lever (11). The lower end of the movable rod (10) is fixed with a sealing element (12) for blocking either the filter hole (7) or the outlet (5).

3. The switchable water purification filter element according to claim 2, characterized in that... The bottom of the mounting base (9) is provided with a recess (13) which is blocked or opened by the sealing element (12), and the side wall of the recess (13) is provided with a straight discharge hole (14) that communicates with the water outlet (5).

4. The switchable water purification filter element according to claim 2 or 3, characterized in that... The top surface of the mounting base (9) is provided with a through hole (16), and a metal sleeve (17) is sealed and installed inside the through hole (16). The metal sleeve (17) is provided with an internal thread, and the movable rod (10) is provided with an external thread corresponding to the internal thread. The external thread is threadedly connected to the internal thread.

5. The switchable water purification filter element according to claim 2, characterized in that... The mounting cavity (6) is provided with a positioning groove, and the mounting base (9) is provided with a positioning block (15) corresponding to the positioning groove, and the positioning block (15) is slidably inserted into the positioning groove.

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