Filtering device and water purifying equipment

Abstract

The utility model provides a filtering device and water purifying equipment, and the filtering device comprises a mounting base body which is provided with a first water passing channel; the first elastic water stop structure can be vertically and movably arranged on the first water flow channel and is provided with a first water stop working position for closing the first water flow channel and a first communication working position for opening the first water flow channel; the filter element is detachably arranged on the mounting base body, the filter element is provided with a raw water cavity, a purified water cavity and a second water flowing channel, and the second water flowing channel is communicated with the raw water cavity or the purified water cavity; the second elastic water stop structure can be vertically and movably arranged in the second water flow channel and is provided with a second water stop working position for closing the second water flow channel and a second communication working position for opening the second water flow channel; in the process that the filter element is installed on the installation base body, the lower end of the second elastic water stop structure abuts against the upper end of the first elastic water stop structure so as to communicate the second water passing flow channel with the first water passing flow channel. The power supply can be saved, and the influence of power failure is avoided.

Description

Technical Field

[0001] This application relates to the field of water purification technology, and in particular, to a filtering device and a water purification device. Background Art

[0002] A water purification device is a device that filters and purifies raw water through a filter element to meet the drinking water standard. Among them, the filter element in the water purification device generally has a certain service life, and users need to regularly replace the filter element that reaches the service life.

[0003] Currently, in order to facilitate the connection of the filter element to the water supply device and the water using device, a water sealing structure is provided on the filter element. The water sealing structure is used to close or open the water inlet and outlet on the filter element. A valve assembly is provided on the base for installing the filter element. The valve assembly is used to close or open the water inlet and outlet interfaces on the base. After the filter element is installed on the base, the water sealing structure opens the water inlet and outlet, the valve assembly conducts and opens the water inlet and outlet interfaces, so that the water inlet and outlet are connected to the water inlet and outlet interfaces, realizing the connection of the filter element to the water supply device and the water using device. However, the above valve assembly needs to be controlled by a controller to conduct and close during water production, consuming power. Utility Model Content

[0004] Embodiments of this application provide a filtering device and a water purification device to solve the problem of power consumption in the related art. The technical solutions are as follows:

[0005] In a first aspect, embodiments of this application provide a filtering device, including:

[0006] An installation base body, the installation base body has a first water flow channel, and the first water flow channel is used to connect a water supply device or a water using device;

[0007] A first elastic water sealing structure, the first elastic water sealing structure is vertically movably arranged on the first water flow channel, the first elastic water sealing structure has a first water sealing position for closing the first water flow channel and a first connection position for opening the first water flow channel, and the first elastic water sealing structure can maintain the first water sealing position under its own elastic action;

[0008] A filter element, the filter element is detachably arranged on the installation base body, the filter element has a raw water chamber, a purified water chamber and a second water flow channel, and the second water flow channel connects the raw water chamber or the purified water chamber;

[0009] A second elastic water sealing structure, the second elastic water sealing structure is vertically movably arranged in the second water flow channel, the second elastic water sealing structure has a second water sealing position for closing the second water flow channel and a second connection position for opening the second water flow channel, and the second elastic water sealing structure can maintain the second water sealing position under its own elastic action;

[0010] During the process of installing the filter element on the installation base, the lower end of the second elastic water stop structure abuts against the upper end of the first elastic water stop structure, so that the first elastic water stop structure is switched from the first water stop position to the first communication position under the thrust of the second elastic water stop structure, and the second elastic water stop structure is switched from the second water stop position to the second communication position under the thrust of the first elastic water stop structure, so as to connect the second water flow channel and the first water flow channel.

[0011] In one embodiment, the first elastic water stop structure includes:

[0012] A first water stop base body, which is vertically movably arranged on the first water flow channel;

[0013] A first water stop elastic member, the lower end of the first water stop elastic member is connected to the installation base, and the upper end of the first water stop elastic member is connected to the first water stop base body;

[0014] A first sealing ring, which is arranged on the first water stop base body. When the first elastic water stop structure is in the first water stop position, the first sealing ring abuts against the first water flow channel to close the first water flow channel. When the first elastic water stop structure is in the first communication position, the first sealing ring is disengaged from abutting against the first water flow channel and is in clearance fit with the first water flow channel to open the first water flow channel.

[0015] In one embodiment, the first water flow channel has a tapered section, and the cross section of the tapered section gradually decreases from bottom to top, and the first sealing ring can abut against the tapered section.

[0016] In one embodiment, a limiting portion is provided on the outer side wall of the first water stop base body, and the outer diameter of the limiting portion gradually decreases from bottom to top. The limiting portion can abut against the tapered section to limit the first elastic water stop structure on the first water flow channel.

[0017] In one embodiment, the first water stop base body has a water passage, the water passage is located above the first sealing ring, the lower end of the water passage penetrates the outer side wall of the first water stop base body, and the lower end of the water passage penetrates the upper end of the first water stop base body. When the first elastic water stop structure is in the first communication position, the lower end of the water passage is communicated with the first water flow channel, and the upper end of the water passage is communicated with the second water flow channel.

[0018] In one embodiment, a first annular positioning groove is provided on the outer side wall of the first water stop base body, and the first annular positioning groove is matched with the first sealing ring.

[0019] In one embodiment, the filter element is provided with a second sealing ring, and the second sealing ring is located on one side close to the lower end of the second water flow passage;

[0020] When the second elastic water stop structure is in the second water stop position, the second elastic water stop structure abuts against the second sealing ring to close the second water flow passage; when the second elastic water stop structure is in the second communication position, the second elastic water stop structure is disengaged from abutting against the second sealing ring to open the second water flow passage;

[0021] The installation base body is provided with an annular protrusion, and the annular protrusion is arranged around the upper end of the second water flow passage. When the first elastic water stop structure is in the first communication position, at least a part of the annular protrusion is inserted into the second sealing ring and is in interference fit with the second sealing ring.

[0022] In one embodiment, the second elastic water stop structure includes:

[0023] A second water stop base body, which is vertically movably arranged on the second water flow passage. When the second elastic water stop structure is in the second water stop position, the second water stop base body abuts against the second sealing ring to close the second water flow passage; when the second elastic water stop structure is in the second communication position, the second water stop base body is disengaged from abutting against the second sealing ring to open the second water flow passage;

[0024] A second water stop elastic member, the upper end of which is connected to the filter element, and the lower end of which is connected to the second water stop base body.

[0025] In one embodiment, the side wall of the second water flow passage has a plurality of water inlets, the water inlets are located above the second sealing ring, the water inlets communicate with the raw water chamber or the purified water chamber, and the plurality of water inlets are arranged in sequence around the vertical center line of the second water flow passage.

[0026] In a second aspect, an embodiment of the present application provides a water purification device, including the above-mentioned filtering device.

[0027] The advantages or beneficial effects in the above technical solutions at least include:

[0028] For the filtration device of the present utility model, when the filter element is installed on the installation base, the lower end of the second elastic water stop structure can abut against the upper end of the first elastic water stop structure, so that the first elastic water stop structure is pushed by the second elastic water stop structure and switches from the first water stop position to the first communication position, realizing the opening of the first water flow channel, enabling the first water flow channel to communicate with the water supply device or the water using device. At the same time, the second elastic water stop structure is pushed by the first elastic water stop structure and switches from the second water stop position to the second communication position, realizing the opening of the second water flow channel, enabling the second water flow channel to communicate with the raw water chamber or the purified water chamber. At the same time, the second water flow channel is connected to the first water flow channel, so that the water supply device is connected to the raw water chamber, and the raw water output by the water supply device is conveyed to the filter element, or the water using device is connected to the purified water device, and the purified water formed by the filter element is output to the water using device for use. It realizes the opening of the first water flow channel and the second water flow channel during the installation process, making the waterway connection more convenient. There is no need for a controller to control the opening of the first water flow channel, which saves more power and is not affected by power failure, and the connection reliability is higher. When disassembling the filter element, the filter element is removed from the installation base, the second elastic water stop structure is disengaged from abutting against the first elastic water stop structure, and the second elastic water stop structure resets from the second communication position to the second water stop position under its own elastic action to reliably seal the second water flow channel and achieve water stop. At the same time, the first elastic water stop structure switches from the first communication position to the first water stop position under its own elastic action to reliably seal the first water flow channel and achieve water stop. It realizes the closing of the first water flow channel and the second water flow channel during the disassembly process. There is no need for a controller to control the closing of the first water flow channel, which saves more power and is not affected by power failure, and the water stop reliability is higher.

[0029] The above summary is only for the purpose of the specification and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present application will be readily apparent by reference to the drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In the drawings, unless otherwise specified, the same reference numerals throughout the several views represent the same or similar components or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in the present application and should not be regarded as limiting the scope of the present application.

[0031] Figure 1 is a schematic three-dimensional structure diagram of the filtration device of the present utility model;

[0032] Figure 2 is a cross-sectional view of the filtration device of the present utility model;

[0033] Figure 3 isFigure 2 Partial enlarged view at location A in

[0034] Figure 4 Schematic three - dimensional structure diagram of the filter element in the present utility model.

[0035] Reference numerals

[0036] 1. Mounting base; 11. First water flow channel; 111. Gradual change section; 12. Annular protrusion; 13. Water path transfer structure; 14. Base; 15. Main housing; 2. First elastic water - stop structure; 21. First water - stop base; 211. Limiting part; 212. Water - passing channel; 213. First annular positioning groove; 22. First elastic water - stop member; 23. First sealing ring; 3. Filter element; 31. Second water flow channel; 311. Water - passing port; 4. Second elastic water - stop structure; 41. Second water - stop base; 42. Second elastic water - stop member; 5. Second sealing ring. Detailed implementation manners

[0037] In the following text, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and the description are regarded as being exemplary in nature rather than restrictive.

[0038] Refer to Figures 1 - 4 , which shows a filtering device in a preferred embodiment of the present utility model, including:

[0039] Mounting base 1, the mounting base 1 has a mounting cavity and a first water flow channel 11, the upper end of the first water flow channel 11 extends into the mounting cavity, and the first water flow channel 11 is used to connect a water supply device or a water - using device;

[0040] First elastic water - stop structure 2, the first elastic water - stop structure 2 is vertically movably arranged on the first water flow channel 11, the first elastic water - stop structure 2 has a first water - stop position for closing the first water flow channel 11 and a first connection position for opening the first water flow channel 11, and the first elastic water - stop structure 2 can maintain the first water - stop position under its own elastic action;

[0041] Filter element 3, the filter element 3 is detachably arranged on the mounting base 1, that is, the filter element 3 is detachably arranged in the mounting cavity, the filter element 3 has a raw water cavity, a purified water cavity and a second water flow channel 31, and the second water flow channel 31 communicates with the raw water cavity or the purified water cavity;

[0042] The second elastic water stop structure 4 is vertically movably arranged in the second water flow channel 31. The second elastic water stop structure 4 has a second water stop position for closing the second water flow channel 31 and a second communication position for opening the second water flow channel 31. The second elastic water stop structure 4 can maintain the second water stop position under its own elastic action;

[0043] During the installation of the filter element 3 on the installation base 1, the lower end of the second elastic water stop structure 4 abuts against the upper end of the first elastic water stop structure 2, so that the first elastic water stop structure 2 is switched from the first water stop position to the first communication position under the thrust of the second elastic water stop structure 4, and the second elastic water stop structure 4 is switched from the second water stop position to the second communication position under the thrust of the first elastic water stop structure 2, so as to connect the second water flow channel 31 and the first water flow channel 11.

[0044] For the filtering device of the present utility model, when the filter element 3 is installed on the installation base 1, the lower end of the second elastic water stop structure 4 can abut against the upper end of the first elastic water stop structure 2, so that the first elastic water stop structure 2 is switched from the first water stop position to the first communication position under the thrust of the second elastic water stop structure 4, realizing the opening of the first water flow channel 11, enabling the first water flow channel 11 to be connected to a water supply device or a water using device. At the same time, the second elastic water stop structure 4 is switched from the second water stop position to the second communication position under the thrust of the first elastic water stop structure 2, realizing the opening of the second water flow channel 31, enabling the second water flow channel 31 to be connected to the raw water chamber or the purified water chamber. At the same time, the second water flow channel 31 is connected to the first water flow channel 11, so that the water supply device is connected to the raw water chamber, and the raw water output by the water supply device is conveyed to the filter element 3, or the water using device is connected to the purified water device, and the purified water formed by the filter element 3 is output to the water using device for use. It realizes the opening of the first water flow channel 11 and the second water flow channel 31 during the installation process, the waterway connection is convenient, there is no need for a controller to control the opening of the first water flow channel 11, more power is saved, and it is not affected by power failure, and the connection reliability is higher; when the filter element 3 is disassembled, the filter element 3 is removed from the installation base 1, the second elastic water stop structure 4 is disengaged from the first elastic water stop structure 2, and the second elastic water stop structure 4 is reset from the second communication position to the second water stop position under its own elastic action to reliably seal the second water flow channel 31 and realize water stop. At the same time, the first elastic water stop structure 2 is switched from the first communication position to the first water stop position under its own elastic action to reliably seal the first water flow channel 11 and realize water stop. It realizes the closing of the first water flow channel 11 and the second water flow channel 31 during the disassembly process, there is no need for a controller to control the closing of the first water flow channel 11, more power is saved, and it is not affected by power failure, and the water stop reliability is higher.

[0045] See Figure 3 In an embodiment, the first elastic water stop structure 2 includes:

[0046] The first water stop base body 21 is vertically movably arranged on the first water flow channel 11;

[0047] The first water stop elastic member 22, the lower end of the first water stop elastic member 22 is connected to the installation base body 1, and the upper end of the first water stop elastic member 22 is connected to the first water stop base body 21;

[0048] The first sealing ring 23 is arranged on the first water stop base body 21. When the first elastic water stop structure 2 is in the first water stop working position, the first sealing ring 23 abuts against the first water flow channel 11 to close the first water flow channel 11. When the first elastic water stop structure 2 is in the first communication working position, the first sealing ring 23 is disengaged from abutting against the first water flow channel 11 and is in clearance fit with the first water flow channel 11 to open the first water flow channel 11. Thus, when the first water stop base body 21 moves upward to the first water stop working position, the first sealing ring 23 abuts against the first water flow channel 11, so that the first elastic water stop structure 2 is in close contact with the first water flow channel 11, to reliably seal the gap between the first elastic water stop structure 2 and the first water flow channel 11 and avoid water leakage. When the first water stop base body 21 moves downward to the first communication working position, the first sealing ring 23 is disengaged from abutting against the first water flow channel 11, and the first sealing ring 23 is in clearance fit with the first water flow channel 11, ensuring that the first water flow channel 11 can be opened.

[0049] See Figure 3 , in an embodiment, the first water flow channel 11 has a tapered section 111, and the cross section of the tapered section 111 gradually decreases from bottom to top, and the first sealing ring 23 can abut against the tapered section 111. Thus, when the first elastic water stop structure 2 moves upward to the first water stop working position, the first sealing ring 23 abuts against the tapered section 111 to reliably close the first water flow channel 11. At the same time, by abutting the first sealing ring 23 against the tapered section 111, a limiting effect on the first elastic water stop structure 2 is achieved, and the first elastic water stop structure 2 can be restricted on the first water flow channel 11 to avoid the first elastic water stop structure 2 disengaging from the first water flow channel 11.

[0050] In other embodiments, the first water flow channel 11 can be divided into an upper section and a lower section, a stepped end face is formed between the upper section and the lower section, and the first sealing ring 23 abuts against the stepped end face to close the first water flow channel 11.

[0051] See Figure 3, in one embodiment, a limiting portion 211 is provided on the outer sidewall of the first water stop base body 21. The limiting portion 211 is located above the first sealing ring 23. The outer diameter of the limiting portion 211 gradually decreases from bottom to top. The limiting portion 211 can abut against the tapered section 111 to limit the first elastic water stop structure 2 on the first water flow channel 11. In this way, when the first elastic water stop structure 2 moves upward to the first water stop working position, by abutting the limiting portion 211 against the tapered section 111, on the one hand, it can reliably limit the first elastic water stop structure 2 from detaching from the first water flow channel 11, improving the connection reliability between the first elastic water stop structure 2 and the installation base body 1. On the other hand, it can play a certain sealing role by abutting the limiting portion 211 against the tapered section 111, thereby improving the water stop reliability.

[0052] See Figure 3 , in one embodiment, the first water stop base body 21 has a water passage 212. The water passage 212 is located above the first sealing ring 23. The lower end of the water passage 212 penetrates the outer sidewall of the first water stop base body 21, and the lower end of the water passage 212 penetrates the upper end of the first water stop base body 21. When the first elastic water stop structure 2 is in the first communication working position, the lower end of the water passage 212 communicates with the first water flow channel 11, and the upper end of the water passage 212 communicates with the second water flow channel 31. In this way, when the first elastic water stop structure 2 and the second elastic water stop structure 4 abut against each other, and when the first elastic water stop structure 2 is in the first communication working position and the second elastic water stop structure 4 is in the second communication working position, the first water flow channel 11 and the second water flow channel 31 can be communicated through the water passage 212. Among them, since the water passage 212 is provided on the first water stop base body 21, the cross-sectional area of the water passage 212 can be made close to the cross-sectional area of the first water stop base body 21, which can improve the water flow rate and thus improve the water inlet and outlet efficiency.

[0053] In other embodiments, the above-mentioned water passage 212 can also be provided between the outer sidewall of the first water stop base body 21 and the first water flow channel 11.

[0054] See Figure 3 , in one embodiment, the outer sidewall of the first water stop base body 21 has a first annular positioning groove 213. The first annular positioning groove 213 cooperates with the first sealing ring 23 to position the installation of the first sealing ring 23 to ensure that the first sealing ring 23 can reliably abut against the first water flow channel 11.

[0055] See Figure 3 , in one embodiment, the filter element 3 is provided with a second sealing ring 5. The second sealing ring 5 is located on one side close to the lower end of the second water flow channel 31;

[0056] When the second elastic water stop structure 4 is in the second water stop working position, the second elastic water stop structure 4 abuts against the second sealing ring 5 to close the second water flow channel 31. When the second elastic water stop structure 4 is in the second communication working position, the second elastic water stop structure 4 is disengaged from the second sealing ring 5 to open the second water flow channel 31;

[0057] The installation base 1 is provided with an annular protrusion 12, and the annular protrusion 12 is arranged around the upper end of the second water flow channel 31. When the first elastic water stop structure 2 is in the first communication working position, at least part of the annular protrusion 12 is inserted into the second sealing ring 5 and is in interference fit with the second sealing ring 5. In this way, the gap between the second elastic water stop structure 4 and the second sealing ring 5 can be sealed by the second elastic water stop structure 4 abutting against the second sealing ring 5, so as to reliably close the second water flow channel 31, and the water stop reliability is higher. In addition, when the first water flow channel 11 and the second water flow channel 31 are communicated, the gap between the installation base 1 and the filter element 3 can be reliably sealed by the interference fit between the annular protrusion 12 and the second sealing ring 5, effectively avoiding the water leakage problem during the use of the filter element 3.

[0058] See Figure 3 , in an embodiment, the second elastic water stop structure 4 includes:

[0059] A second water stop base 41, the second water stop base 41 is vertically movably arranged on the second water flow channel 31. When the second elastic water stop structure 4 is in the second water stop working position, the second water stop base 41 abuts against the second sealing ring 5 to close the second water flow channel 31. When the second elastic water stop structure 4 is in the second communication working position, the second water stop base 41 is disengaged from the second sealing ring 5 to open the second water flow channel 31;

[0060] A second water stop elastic member 42, the upper end of the second water stop elastic member 42 is connected to the filter element 3, and the lower end of the second water stop elastic member 42 is connected to the second water stop base 41. In this way, the second water stop elastic member 42 provides a driving force for the second water stop base 41 to realize reliable abutment of the second water stop base 41 and the second sealing ring 5, so that the second elastic water stop structure 4 is reliably maintained in the second water stop working position, with high structural reliability, simple and practical structure, and low cost.

[0061] See Figure 4 , in an embodiment, the side wall of the second water flow channel 31 has a plurality of water inlets 311, the water inlets 311 are located above the second sealing ring 5, the water inlets 311 communicate with the raw water chamber or the purified water chamber, and the plurality of water inlets 311 are arranged in sequence around the vertical center line of the second water flow channel 31. Since the water inlets 311 are arranged on the side wall of the second water flow channel 31, the water flow rate can be increased, and thus the water inlet and outlet efficiency can be improved.

[0062] In other embodiments, the water passing port 311 may be provided at the upper end of the second water passing channel 31.

[0063] In one embodiment, both the first water stop elastic member 22 and the second water stop elastic member 42 are springs. Of course, in other embodiments, the first water stop elastic member 22 and the second water stop elastic member 42 may also be elastic structures such as elastic sheets.

[0064] For the convenience of installing the first elastic water stop structure 2, in one embodiment, the installation base 1 includes a water path transfer structure 13, a base 14, and a main housing 15. The water path transfer structure 13 is provided at the bottom of the base 14. The water path transfer structure 13 and the base 14 enclose a first water passing channel 11. The water path transfer structure 13 has a water connection port, and the water connection port is communicated with the lower end of the first water passing channel 11. The water connection port is also used for communicating with a water supply device or a water using device. The main housing 15 is provided on the top of the base 14, and the main housing 15 and the base 14 enclose the above-mentioned installation cavity.

[0065] A preferred embodiment of the present utility model provides a water purification device, including the above-mentioned filtering device.

[0066] Due to the adoption of the above-mentioned filtering device, the water purification device of the present utility model can also achieve the opening of the first water passing channel 11 and the second water passing channel 31 during the installation process of the filter element 3, without the need for a controller to control the opening of the first water passing channel 11, which saves more power, is not affected by power failure, has higher connection reliability, and can achieve the closing of the first water passing channel 11 and the second water passing channel 31 during the disassembly process of the filter element 3, without the need for a controller to control the closing of the first water passing channel 11, which saves more power, is not affected by power failure, and has higher water stop reliability.

[0067] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0068] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present application, "a plurality" means two or more, unless otherwise specifically defined.

[0069] The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of various changes or substitutions, and these should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A filtering device, characterized in that: include: A mounting base, wherein the mounting base has a first water flow channel, and the first water flow channel is used to connect to a water supply device or a water use device; A first elastic water-stopping structure, the first elastic water-stopping structure is vertically movably disposed on the first water flow passage, the first elastic water-stopping structure has a first water-stopping position for closing the first water flow passage and a first connecting position for opening the first water flow passage, and the first elastic water-stopping structure can maintain the first water-stopping position under its own elastic action; A filter element, the filter element being detachably mounted on the mounting base, the filter element having a raw water cavity, a clean water cavity, and a second water flow channel, the second water flow channel being connected to the raw water cavity or the clean water cavity; A second elastic water-stopping structure, the second elastic water-stopping structure is vertically movably disposed in the second water flow passage, the second elastic water-stopping structure has a second water-stopping position for closing the second water flow passage and a second connecting position for opening the second water flow passage, and the second elastic water-stopping structure can maintain the second water-stopping position under its own elastic action; During the process of installing the filter element on the installation base, the lower end of the second elastic water-stop structure abuts against the upper end of the first elastic water-stop structure, so that the first elastic water-stop structure is switched from the first water-stop position to the first connecting position due to the thrust of the second elastic water-stop structure, and the second elastic water-stop structure is switched from the second water-stop position to the second connecting position due to the thrust of the first elastic water-stop structure, so as to connect the second water flow channel with the first water flow channel.

2. The filtering device according to claim 1, characterized in that: The first elastic water-stopping structure comprises: a first water-stopping matrix, the first water-stopping matrix being vertically movably disposed on the first water flow channel; a first water-stop elastic member, wherein the lower end of the first water-stop elastic member is connected to the mounting base, and the upper end of the first water-stop elastic member is connected to the first water-stop base; The first sealing ring is arranged on the first water-stopping substrate. When the first elastic water-stopping structure is in the first water-stopping position, the first sealing ring abuts against the first water flow channel to close the first water flow channel. When the first elastic water-stopping structure is in the first connecting position, the first sealing ring is disengaged from the abutment with the first water flow channel and cooperates with the gap of the first water flow channel to open the first water flow channel.

3. The filtering device according to claim 2, characterized in that: The first water flow channel has a gradient section, the cross section of which gradually decreases from bottom to top, and the first sealing ring can abut against the gradient section.

4. The filtering device according to claim 3, characterized in that: The outer wall of the first water-stopping base is provided with a limiting portion, which is located above the first sealing ring. The outer diameter of the limiting portion gradually decreases from bottom to top. The limiting portion can offset the gradient section to limit the first elastic water-stopping structure to the first water flow channel.

5. The filtering device according to claim 2, characterized in that: The first water-stopping base has a water passage, which is located above the first sealing ring. The lower end of the water passage passes through the outer wall of the first water-stopping base, and the lower end of the water passage passes through the upper end of the first water-stopping base. When the first elastic water-stopping structure is in the first connecting position, the lower end of the water passage is connected with the first water flow channel, and the upper end of the water passage is connected with the second water flow channel.

6. The filtering device according to claim 2, characterized in that: The outer side wall of the first water-stopping base has a first annular positioning groove, and the first annular positioning groove cooperates with the first sealing ring.

7. The filtering device according to claim 1, characterized in that: The filter element is provided with a second sealing ring, and the second sealing ring is located on one side close to the lower end of the second water flow channel; When the second elastic water-stopping structure is in the second water-stopping position, the second elastic water-stopping structure abuts against the second sealing ring to close the second water flow channel; when the second elastic water-stopping structure is in the second connecting position, the second elastic water-stopping structure is disengaged from the abutment with the second sealing ring to open the second water flow channel; The mounting base is provided with an annular protrusion, which is arranged around the upper end of the second water flow channel. When the first elastic water-stop structure is in the first connecting position, at least part of the annular protrusion is inserted into the second sealing ring and has an interference fit with the second sealing ring.

8. The filtering device according to claim 7, characterized in that: The second elastic water-stopping structure comprises: a second water-stopping matrix, the second water-stopping matrix being vertically movably disposed on the second water-passing passage; when the second elastic water-stopping structure is in the second water-stopping position, the second water-stopping matrix abuts against the second sealing ring to close the second water-passing passage; when the second elastic water-stopping structure is in the second connecting position, the second water-stopping matrix is ​​disengaged from the abutment with the second sealing ring to open the second water-passing passage; A second water-stopping elastic member, wherein the upper end of the second water-stopping elastic member is connected to the filter element, and the lower end of the second water-stopping elastic member is connected to the second water-stopping substrate.

9. The filtering device according to claim 8, characterized in that: The side wall of the second water flow channel has a plurality of water outlets, the water outlets are located above the second sealing ring, the water outlets are connected to the raw water chamber or the clean water chamber, and the plurality of water outlets are arranged in sequence around the vertical center line of the second water flow channel.

10. A water purification device, characterized in that: A filter device comprising any one of claims 1 to 9.

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