Faucet water purifier

Abstract

The utility model discloses a faucet water purifier which comprises a shell, a water purification filter element and a switching valve assembly, the switching valve assembly comprises a valve seat and a switching valve element which are arranged in the shell, the valve seat is provided with a valve cavity, a water inlet channel, a raw water channel and a water purification channel, the switching valve assembly further comprises a valve plate and the water purification valve element, and the valve plate is connected between the valve cavity and the water inlet channel. A water through hole is formed in the valve plate; the water purification valve element is connected to the switching valve element and synchronously rotates along with the switching valve element so as to open or close the water passing hole. When the switching valve core rotates until the water inlet channel is disconnected from the raw water channel, the water purification valve core opens the water through hole in the valve plate; and when the switching valve core rotates until the water inlet channel is communicated with the raw water channel, the water purification valve core closes the water through hole in the valve plate. The faucet water purifier is simple in structure, low in production cost, stable in water outlet flow and good in user experience.

Description

Technical Field

[0001] This application relates to the field of water purification equipment technology, specifically a faucet water purifier. Background Technology

[0002] As living standards continue to improve, people have increasingly higher requirements for drinking water quality. Most ordinary households have water purification devices installed, the most common being faucet water purifiers and water filter purifiers. Faucet water purifiers are typically installed on kitchen faucets, where tap water is filtered and purified by the purifier's filter before being discharged for user use. However, these faucet water purifiers generally have only one outlet, meaning the tap water must pass through the filter before flowing out. This results in a shorter lifespan for the filter cartridge and higher operating costs.

[0003] In reality, water used for handwashing or washing dishes can be used directly without purification, thus extending the lifespan of the filter cartridge. Therefore, a type of faucet water purifier has emerged on the market that can dispense both purified and raw water. Its structure generally includes a filter and a water circuit switching valve. The filter and the switching valve are connected by a screw-on mechanism, and the switching valve is connected to the faucet. Raw water is discharged from the bottom of the switching valve, while purified water is discharged from the bottom of the filter. However, the aforementioned faucet water purifiers have relatively complex water circuit switching valve structures, resulting in higher production costs. Furthermore, the complex setup and switching between the purified and raw water circuits within the switching valve leads to unstable water flow from the outlet, resulting in a poor user experience. Utility Model Content

[0004] The technical problem to be solved by this application is to overcome the defects of the above-mentioned related technologies and provide a faucet water purifier with simple structure, low production cost, stable water flow, and good user experience.

[0005] The technical solution of this application is to provide a faucet water purifier having the following structure: including...

[0006] Housing and water filter element;

[0007] A switching valve assembly includes a valve seat and a switching valve core disposed within a housing. The valve seat has a valve cavity, an inlet channel, a raw water channel, and a purified water channel. The purified water channel includes an inflow channel communicating with the inlet of the purified water filter element and an outflow channel communicating with the outlet of the purified water filter element. The switching valve core is rotatably connected within the valve cavity to allow the inlet channel to communicate with either the raw water channel or the purified water channel. The switching valve assembly also includes...

[0008] The system includes a valve plate and a purified water valve core. The valve plate is connected between the valve chamber and the inflow channel, and the valve plate is provided with a water passage hole. The purified water valve core is connected to the switching valve core and rotates synchronously with the switching valve core to open or close the water passage hole. When the switching valve core rotates to the point where the inlet channel is disconnected from the raw water channel, the purified water valve core opens the water passage hole on the valve plate. And when the switching valve core rotates to the point where the inlet channel is connected to the raw water channel, the purified water valve core closes the water passage hole on the valve plate.

[0009] In some embodiments, the water purification valve core is connected to the switching valve core.

[0010] The end of the water purification valve core is provided with a water passage hole that communicates with the inner cavity of the switching valve core along the circumferential direction. The end of the water purification valve core near the valve plate is sealed and fitted to the valve plate to close the inflow channel. When the water purification valve core rotates with the switching valve core to the point where the water passage hole communicates with the water inlet, the inflow channel is opened.

[0011] In some embodiments, an annular boss extending into the valve cavity is provided at the inlet of the inflow channel, and an annular mounting groove is formed between the annular boss and the inner wall of the valve cavity. An annular sealing body is connected in the annular mounting groove, and the annular sealing body is sealed and fitted to the valve plate.

[0012] In some embodiments, the switching valve core is provided with a first water inlet, a second water inlet, and a water outlet. The first water inlet and the second water inlet are arranged side by side and distributed along the circumference of the switching valve core. When the first water inlet is connected to the water inlet channel, the water outlet is connected to the raw water channel. When the second water inlet is connected to the water inlet channel, the water outlet is disconnected from the raw water channel.

[0013] In some embodiments, a sealing gasket is connected to the inner wall of the valve cavity outside the water outlet, and the sealing gasket is provided with a through hole corresponding to the water outlet. When the water outlet and the through hole are connected, the outer circumference of the through hole is sealed with the outer circumference of the water outlet.

[0014] In some embodiments, a fixed disk is connected to the valve seat, the fixed disk having a central hole communicating with the valve cavity, the switching valve core having a connecting shaft extending outward along the axial direction, the connecting shaft being rotatably connected in the central hole, and a knob being connected to the outer end of the connecting shaft.

[0015] In some embodiments, the end face of the fixed plate near the knob is provided with a plurality of position slots along the circumference, and the knob is connected to an axially movable elastic pin, with the free end of the elastic pin elastically abutting against the position slot.

[0016] In some embodiments, a hollow support is sealed at the inlet of the water inlet channel, and a filter screen is connected to the inlet of the support.

[0017] In some embodiments, the water filter element is threaded onto the housing.

[0018] In some embodiments, a water outlet cover is welded to the housing at the outlet of the raw water channel and the outflow channel, and the water outlet cover is provided with an outlet corresponding to the outlet of the raw water channel and the outflow channel, respectively.

[0019] In summary, compared with related technologies, the faucet water purifier of this application has the following advantages: The faucet water purifier connects the inlet channel to the raw water channel or the purified water channel by rotating the switching valve core. Therefore, users can select to use raw water or purified water by rotating the switching valve core, which is very convenient. Furthermore, the switching valve assembly includes a valve plate and a purified water valve core. The purified water valve core is connected to the switching valve core and rotates synchronously with the switching valve core to open or close the water passage on the valve plate. Specifically, when the switching valve core rotates to the point where the inlet channel is disconnected from the raw water channel, the purified water valve core opens the water passage on the valve plate; and when the switching valve core rotates to the point where the inlet channel is connected to the raw water channel, the purified water valve core closes the water passage on the valve plate. In other words, this faucet water purifier opens or closes the water purification channel by linking the water purification valve core and the switching valve core, avoiding the need to control the opening or closing of the water purification channel solely through the switching valve core, thus simplifying the structure of the switching valve core. Furthermore, by cooperating with the valve plate to control the opening or closing of the water purification channel, the water flow from the inlet channel into the purification channel is more stable, the noise level is lower, and the water flow rate is more consistent, resulting in a better user experience. In addition, the overall structure of this faucet water purifier is simple, easy to assemble, and has a lower production cost. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of one embodiment of a faucet water purifier according to this application.

[0021] Figure 2 This is a cross-sectional structural schematic diagram of an embodiment of a faucet water purifier according to this application.

[0022] Figure 3 This is a cross-sectional view of another embodiment of a faucet water purifier according to this application.

[0023] Figure 4 This is a schematic diagram of the valve seat structure of an embodiment of a faucet water purifier according to this application.

[0024] Figure 5 This is a three-dimensional cross-sectional view of the valve seat of a faucet water purifier according to Embodiment 1 of this application.

[0025] Figure 6This is a schematic diagram of the knob installation structure of an embodiment of a faucet water purifier according to this application.

[0026] Figure 7 This is a schematic diagram of the structure of a second embodiment of a faucet water purifier according to this application.

[0027] Figure 8 This is a cross-sectional structural schematic diagram of a second embodiment of a faucet water purifier according to this application.

[0028] Figure 9 This is a schematic diagram of the internal structure of a second embodiment of a faucet water purifier according to this application.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Housing; 100. Faucet Interface; 101. Connecting End; 2. Water Purifier Filter; 3. Switching Valve Assembly; 300. Valve Seat; 301. Valve Chamber; 302. Switching Valve Core; 303. Inlet Water Channel; 304. Raw Water Channel; 305. Purified Water Channel; 3050. Inflow Channel; 3051. Outflow Channel; 3052. Sealing Plate; 306. Valve Plate; 307. Purified Water Valve Core; 308. Annular Boss; 30 80. Annular mounting groove; 309. Annular sealing body; 310. Water passage hole; 311. Water through hole; 312. First water inlet hole; 313. Second water inlet hole; 314. Water outlet hole; 315. Sealing gasket; 316. Through hole; 317. Connecting shaft; 318. Support; 319. Filter screen; 320. Clean water outlet column; 4. Fixing plate; 400. Gear slot; 5. Knob; 6. Elastic pin; 7. Fastening bolt. Detailed Implementation

[0031] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0032] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to 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 the embodiments of this application based on the specific circumstances.

[0033] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0034] Example 1:

[0035] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0036] See Figures 1-6 As shown in the illustration, this application discloses a faucet water purifier, which is installed on a kitchen faucet. Its structure includes a housing 1, a water filter element 2, and a switching valve assembly 3. The housing 1 is generally made of plastic or metal and has a faucet interface 100 for connecting to the faucet. The water filter element 2 is installed on the housing 1 via a threaded connection or snap-fit, facilitating disassembly, replacement, or maintenance. Specifically, in this embodiment, the housing 1 has a threaded connection end 101, where the water filter element 2 is threadedly connected. A sealing ring is provided between the water filter element 2 and the inner wall of the connection end 101 for sealing. The water filter element 2 generally includes a shell, a filter screen assembly connected within the shell, and has a water inlet and a purified water outlet. The water filter element 2 is a prior art water filter element and will not be described in detail in this embodiment.

[0037] Further in this embodiment, see Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, a switching valve assembly 3 is installed inside the housing 1 of the faucet water purifier. The switching valve assembly 3 is fixedly connected to the housing 1 by fastening bolts 7. The switching valve assembly 3 includes a valve seat 300 and a switching valve core 302 disposed inside the housing 1. The valve seat 300 is connected to the housing 1 by fastening bolts 7. The valve seat 300 has a valve cavity 301, a water inlet channel 303, a raw water channel 304, and a purified water channel 305. The purified water channel 305 includes an inflow channel 3050 communicating with the inlet of the purified water filter element 2 and an outflow channel 3051 communicating with the outlet of the purified water filter element 2. The switching valve core 302 is rotatably connected to the valve cavity 301 so that the water inlet channel 303 communicates with the raw water channel 304 or the purified water channel 305. Specifically, the switching valve core 302 has a hollow inner cavity and is provided with a first water inlet hole 312, a second water inlet hole 313, and an outlet hole. 314. The first water inlet hole 312 and the second water inlet hole 313 are arranged side by side and distributed along the circumference of the switching valve core 302. When the first water inlet hole 312 is connected to the water inlet channel 303, the water outlet hole 314 is connected to the raw water channel 304. After the switching valve core 302 rotates, when the second water inlet hole 313 of the switching valve core 302 is connected to the water inlet channel 303, the water outlet hole 314 is disconnected from the raw water channel 304. This controls the opening and closing of the raw water channel 304. It can be understood that the faucet interface 100 on the housing 1 is connected to the water inlet channel 303 on the valve seat 300. Tap water flows into the valve cavity 301 through the water inlet channel 303 and enters the inner cavity of the switching valve core 302 through the first water inlet hole 312 or the second water inlet hole 313. When the water outlet hole 314 of the switching valve core 302 is connected to the raw water channel 304, the water flowing out of the faucet water purifier is raw water.

[0038] In this embodiment, a hollow support 318 is sealed at the inlet of the water inlet channel 303, and a filter screen 319 is connected to the inlet of the support 318. The filter screen 319 can filter larger particles of impurities in the water, preventing larger particles of impurities from entering the valve seat 300 and clogging the water flow channel.

[0039] Further in this embodiment, see again Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the switching valve assembly 3 also includes a valve plate 306 and a purified water valve core 307. The valve plate 306 is connected between the valve chamber 301 and the inflow channel 3050 of the purified water channel 305, and the valve plate 306 is provided with a water passage hole 310. The purified water valve core 307 is connected to the switching valve core 302 and rotates synchronously with the switching valve core 302 to open or close the water passage hole 310. When the switching valve core 302 rotates to the point where the inlet channel 303 is disconnected from the raw water channel 304, the purified water valve core 307 opens the water passage hole 310 on the valve plate 306; and when the switching valve core 302 rotates to the point where the inlet channel 303 is connected to the raw water channel 304, the purified water valve core 307 closes the water passage hole 310 on the valve plate 306. In this embodiment, the valve plate 306 and the purified water valve core 307 constitute an independent valve assembly for controlling the water in the valve chamber 301 or the switching valve core 302 to enter the purified water channel 305. When the water inlet channel 303 is connected to the purified water channel 305, the raw water channel 304 is closed. At this time, the water flowing out of the faucet water purifier is purified water after being filtered by the water purification filter element 2.

[0040] In the above embodiment, the faucet water purifier connects the inlet channel 303 with the raw water channel 304 or the purified water channel 305 by rotating the switching valve core 302. Therefore, the user can select to use raw water or purified water by rotating the switching valve core 302, which is very convenient. In addition, the switching valve assembly 3 includes a valve plate 306 and a purified water valve core 307. The purified water valve core 307 is connected to the switching valve core 302 and rotates synchronously with the switching valve core 302 to open or close the water passage 310 on the valve plate 306. Specifically, when the switching valve core 302 rotates to the point where the inlet channel 303 is disconnected from the raw water channel 304, the purified water valve core 307 opens the water passage 310 on the valve plate 306; and when the switching valve core 302 rotates to the point where the inlet channel 303 is connected to the raw water channel 304, the purified water valve core 307 closes the water passage 310 on the valve plate 306. In other words, this faucet water purifier opens or closes the water purification channel 305 by linking the water purification valve core 307 and the switching valve core 302, avoiding the need to control the opening or closing of the water purification channel 305 solely through the switching valve core 302, thus simplifying the structure of the switching valve core 302. Furthermore, by cooperating with the valve plate 306 to control the opening or closing of the water purification channel 305, the water flow from the inlet channel 303 into the water purification channel 305 becomes more stable, quieter, and the water flow rate is stable, resulting in a better user experience. In addition, the faucet water purifier has a simple overall structure, is easy to assemble, and has a low production cost.

[0041] In this embodiment, the water purification valve core 307 is connected to the end of the switching valve core 302, and the water purification valve core 307 has a water passage hole 311 communicating with the inner cavity of the switching valve core 302 along the circumferential direction. The end of the water purification valve core 307 near the valve plate 306 is sealed and fitted to the valve plate 306 to close the inflow channel 3050, and opens the inflow channel 3050 when the water purification valve core 307 rotates with the switching valve core 302 until the water passage hole 311 communicates with the water passage hole 310. By rotating the water purification valve core 307 relative to the valve plate 306, the water passage hole 311 on the water purification valve core 307 is opened or closed by misalignment with the water passage hole 310 on the valve plate 306, thereby realizing the on / off control of the inflow channel 3050.

[0042] For example, see Figure 2 and Figure 4 As shown, the valve plate 306 is a circular plate with two circumferentially distributed water passage holes 310. The shape of the water purification valve core 307 is adapted to it, and the water purification valve core 307 abuts and seals against the valve plate 306. The water purification valve core 307 has two circumferentially distributed water passage holes 311. When the water purification valve core 307 rotates to the point where the two water passage holes 311 and the two water passage holes 310 are respectively connected, the inflow channel 3050 of the water purification channel 305 opens, and the water can enter the water purification filter element 2 through the inflow channel 3050 for filtration and purification, and then flow out through the outflow channel 3051. When the water purification valve core 307 rotates to the point where the two water passage holes 311 and the two water passage holes 310 are respectively misaligned, the seal between the water purification valve core 307 and the valve plate 306 closes the water purification channel 305.

[0043] To improve the sealing effect of the valve plate 306 and the water purification valve core 307 on the water purification channel 305, in this embodiment, see... Figure 2 and Figure 5 As shown, an annular boss 308 extending into the valve cavity 301 is provided at the inlet of the inflow channel 3050, and an annular mounting groove 3080 is formed between the annular boss 308 and the inner wall of the valve cavity 301. An annular sealing body 309 is connected in the annular mounting groove 3080, and the annular sealing body 309 is sealed and fitted to the valve plate 306. This arrangement provides a better seal between the valve plate 306 and the inner wall of the valve cavity 301, preventing water from overflowing or leaking from the gap between the valve plate 306 and the inner wall of the valve cavity 301.

[0044] Furthermore, in this embodiment, to further prevent water leakage, a sealing gasket 315 is connected to the inner wall of the valve cavity 301 outside the water outlet 314 of the switching valve core 302, and the sealing gasket 315 is provided with a through hole 316 corresponding to the water outlet 314. When the water outlet 314 and the through hole 316 are connected, the outer circumference of the through hole 316 seals with the outer circumference of the water outlet 314. See Figure 2 and Figure 4As shown, the sealing gasket 315 is a soft, elastic sealing gasket 315, which is welded or bonded to the receiving groove on the inner wall of the valve cavity 301. When raw water is discharged, the outlet hole 314 of the switching valve core 302 is connected to the through hole 316 on the sealing gasket 315, and the raw water can flow out of the raw water channel 304 through the outlet hole 314 and the through hole 316. The sealing gasket 315 can prevent leakage or overflow when the water from the outlet hole 314 flows through the raw water channel 304.

[0045] To facilitate user switching between water purification and raw water functions by rotating valve core 302, in this embodiment, see [reference needed]. Figure 2 and Figure 6 As shown, a fixed disk 4 is connected to the valve seat 300. The fixed disk 4 has a central hole that communicates with the valve cavity 301. The switching valve core 302 has a connecting shaft 317 extending outward along the axial direction. The connecting shaft 317 is rotatably connected in the central hole, and a knob 5 is connected to the outer end of the connecting shaft 317. Rotating the knob 5 can drive the switching valve core 302 to rotate through the connecting shaft 317, so the operation is very simple and convenient.

[0046] Furthermore, in this embodiment, the end face of the fixed disk 4 near the knob 5 is provided with a plurality of circumferentially arranged position grooves 400. An axially movable elastic pin 6 is connected to the knob 5, and the free end of the elastic pin 6 elastically abuts against the position groove 400. Through the cooperation between the elastic pin 6 connected to the knob 5 and the position groove 400 on the fixed disk 4, the user can operate the knob 5 more simply and conveniently.

[0047] For example, see Figure 2 and Figure 6 As shown, the fixed plate 4 has two circumferentially distributed arc-shaped gear slots 400, which represent the raw water gear and the purified water gear respectively. The elastic pin 6 is composed of a cylindrical pin and a spring. When the knob 5 is rotated, the cylindrical pin can extend and retract axially to compress the spring and move from one gear slot 400 to the other gear slot 400.

[0048] Furthermore, in this embodiment, water outlet caps are welded to the housing 1 at the outlets of the raw water channel 304 and the outflow channel 3051, and the water outlet caps are respectively provided with water outlets corresponding to the outlets of the raw water channel 304 and the outflow channel 3051. This arrangement places the outlets of the raw water channel 304 and the outflow channel 3051 in relatively close positions, which facilitates water intake for users and makes the structure of the entire faucet water purifier more compact.

[0049] Example 2:

[0050] See Figures 7-9As shown; in this embodiment, the valve seat 300 is connected to a protruding water outlet column 320 at one end near the water filter element 2. When installing the water filter element 2, first insert the water outlet of the water filter element 2 into the water outlet column 320, and then thread the outer shell of the water filter element 2 onto the connecting end 101 of the housing 1 and press the water filter element 2 so that the water filter element 2 is held on the housing 1.

[0051] In this embodiment, the purified water outlet column 320 is hollow inside, and its inner end is connected to the outflow channel 3051 of the purified water channel 305. When the purified water filter element 2 is threaded onto the connecting end 101 of the housing 1, the purified water outlet column 320 is inserted into the purified water outlet of the purified water filter element 2 and is connected to the purified water outlet of the purified water filter element 2. Water in the inlet channel 303 flows into the valve chamber 301, and after passing through the switching valve core 302, the purified water valve core 307, and the inlet channel 3050 of the purified water channel 305, it enters the purified water filter element 2. The purified water after being filtered and purified by the purified water filter element 2 then flows out sequentially through the purified water outlet of the purified water filter element 2, the purified water outlet column 320, and the outflow channel 3051.

[0052] It is easy to understand that, in order to facilitate the injection molding of the outflow channel 3051, an opening is formed on the valve seat 300 during injection molding, which is connected to the outflow channel 3051 and is provided along the length of the outflow channel 3051. Therefore, after the valve seat 300 is injection molded, a sealing plate 3052 is welded to the opening to seal it.

[0053] The other technical solutions in this embodiment are the same as those in Embodiment 1 above, and will not be described again in this embodiment.

[0054] In the description of the embodiments of this application, it should be noted that the terms "inner" and "outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0055] In the description of this application, the references to terms such as "an embodiment," "some embodiments," "in this embodiment," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. 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 a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0056] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A faucet water purifier characterized by: Comprising a housing and a water purification filter element; a switching valve assembly comprising a valve seat and a switching valve core arranged in the housing, the valve seat having a valve cavity, a raw water inlet channel, a raw water channel and a purified water channel, the purified water channel comprising an inflow channel communicated with the inlet of the water purification filter element and an outflow channel communicated with the outlet of the water purification filter element; the switching valve core being rotatably connected in the valve cavity to make the raw water inlet channel communicated with the raw water channel or the purified water channel; the switching valve assembly further comprising a valve plate and a purified water valve core, the valve plate being connected between the valve cavity and the inflow channel, and the valve plate being provided with a water passing hole; the purified water valve core being connected on the switching valve core and rotating synchronously with the switching valve core to open or close the water passing hole; when the switching valve core is rotated to disconnect the raw water inlet channel from the raw water channel, the purified water valve core opens the water passing hole on the valve plate; and when the switching valve core is rotated to make the raw water inlet channel communicated with the raw water channel, the purified water valve core closes the water passing hole on the valve plate.

2. The faucet water purifier of claim 1, wherein: The purified water valve core is connected on the end of the switching valve core, and the purified water valve core is provided with a water passing hole communicated with the inner cavity of the switching valve core in the circumferential direction, and the end of the purified water valve core close to the valve plate is sealingly fitted with the valve plate to close the inflow channel, and when the purified water valve core is rotated with the switching valve core to make the water passing hole communicated with the water passing hole, the inflow channel is opened.

3. The faucet water purifier of claim 2, wherein: An annular boss extending into the valve cavity is arranged at the inlet of the inflow channel, and an annular mounting groove is formed between the annular boss and the inner wall of the valve cavity, and an annular sealing body is connected in the annular mounting groove.

4. The faucet water purifier of claim 1, wherein: The switching valve core is provided with a first raw water inlet hole, a second raw water inlet hole and a water outlet hole, the first raw water inlet hole and the second raw water inlet hole are arranged side by side and distributed along the circumferential direction of the switching valve core, when the first raw water inlet hole is communicated with the raw water inlet channel, the water outlet hole is communicated with the raw water channel, and when the second raw water inlet hole is communicated with the raw water inlet channel, the water outlet hole is disconnected from the raw water channel.

5. The faucet water purifier of claim 4, wherein: A sealing gasket is connected on the inner wall of the valve cavity outside the water outlet hole, and a through hole corresponding to the water outlet hole is arranged on the sealing gasket, when the water outlet hole is communicated with the through hole, the outer circumference of the through hole is sealed with the outer circumference of the water outlet hole.

6. The faucet water purifier of claim 1, wherein: A fixed disc is connected on the valve seat, the fixed disc has a central hole communicated with the valve cavity, the switching valve core has a connecting shaft extending outwardly in the axial direction, the connecting shaft is rotatably connected in the central hole, and the outer end of the connecting shaft is connected with a knob.

7. The faucet water purifier of claim 6, wherein: A plurality of gear grooves are arranged on the end face of the fixed disc close to the knob in the circumferential direction, an axially movable elastic pin is connected on the knob, and the free end of the elastic pin is elastically abutted in the gear groove.

8. The faucet water purifier of claim 1, wherein: A hollow support is sealingly sleeved on the inlet of the raw water inlet channel, and a filter screen is connected at the inlet of the support.

9. The faucet water purifier of claim 1, wherein: The water purification filter element is threadedly connected on the housing.

10. The faucet water purifier of claim 1, wherein: A water outlet cover is welded on the housing at the outlet of the raw water channel and the outflow channel, and the water outlet cover is respectively provided with a water outlet corresponding to the outlet of the raw water channel and the outflow channel.

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