Built-in water purification and reverse osmosis filtration faucet

Abstract

The invention relates to the technical field of water treatment, in particular to a built-in water purification and reverse osmosis filtration faucet which comprises a water outlet head and a purification assembly. The purification assembly comprises a mounting cylinder, a reverse osmosis filter element, a purified water outlet pipe, a sewage outlet pipe, a water inlet pipe, a water inlet valve and a connecting pipe; through the mounting cylinder, the purified water outlet pipe is communicated with the water outlet of the reverse osmosis filter element, the sewage outlet pipe is communicated with the sewage outlet of the reverse osmosis filter element, and the water inlet pipe is communicated with the water inlet of the reverse osmosis filter element; one end of the water inlet valve is communicated with the water inlet pipe, the other end of the water inlet valve is communicated with the connecting pipe, the connecting pipe is used for being communicated with tap water, the water inlet valve is opened, the tap water enters the reverse osmosis filter element, purified water flows from the purified water outlet pipe to the water outlet head to be discharged, and concentrated water is discharged from the sewage outlet pipe; therefore, the faucet has the water purification function, is compact in overall structure and small in occupied space, and meets the requirements of consumers.

Description

Technical Field

[0001] The invention relates to the technical field of water treatment, and in particular to a built-in water purification and reverse osmosis filtering faucet. Background Art

[0002] Reverse osmosis is a process that uses a pressure higher than the osmotic pressure as a driving force, and utilizes the selective permeability of a selective membrane that can only pass water but not solutes, to separate water molecules from solutes in a water body. Reverse osmosis water purifiers mainly use reverse osmosis membrane technology. Its working principle is to apply a certain pressure to water, so that water molecules and ionic mineral elements pass through the reverse osmosis membrane, while most of the inorganic salts, heavy metals, organic matter, bacteria, viruses, etc. dissolved in the water cannot pass through the reverse osmosis membrane, thereby strictly separating the pure water that has passed through and the concentrated water that cannot pass through.

[0003] Existing faucets generally do not have the function of purifying water. The tap water is first passed into a dedicated reverse osmosis water purifier, filtered and purified through reverse osmosis membrane technology, and then supplied to the faucet. However, using this method, the overall size is large, which takes up more kitchen space and cannot meet consumer needs. Summary of the invention

[0004] The purpose of the present invention is to provide a built-in water purification and reverse osmosis filtering faucet, which has a water purification function and a compact overall structure, occupies less space, and meets consumer needs.

[0005] To achieve the above-mentioned object, the present invention provides a built-in water purification and reverse osmosis filtration faucet, comprising a water outlet;

[0006] Also included is a purification component;

[0007] The purification assembly includes a mounting cartridge, a reverse osmosis filter element, a clean water outlet pipe, a sewage outlet pipe, a water inlet pipe, a water inlet valve and a connecting pipe;

[0008] The installation cylinder is located at one side of the water outlet head; the reverse osmosis filter element is arranged in the installation cylinder; the clean water outlet pipe is connected with the water outlet head and the installation cylinder, and is located at one side of the installation cylinder; the sewage outlet pipe is connected and arranged at the bottom of the installation cylinder; the water inlet pipe is connected and arranged at the top of the installation cylinder; the water inlet valve is fixedly arranged at the top of the installation cylinder and is connected with the water inlet pipe; the connecting pipe is connected and arranged at one side of the water inlet valve.

[0009] Wherein, the installation cylinder comprises a shell, a packaging shell, a plurality of first threaded cylinders, a plurality of screws, a docking piece, a first plug-in cylinder and a second plug-in cylinder;

[0010] The shell is fixedly arranged at the bottom of the water inlet valve; the packaging shell is located at one side of the shell; a plurality of the first threaded barrels are respectively fixedly arranged inside the shell; a plurality of the screws are respectively threadedly connected with the plurality of the first threaded barrels and respectively pass through the packaging shell; the docking piece is arranged inside the shell and is connected with the water inlet pipe, and the docking piece is used to connect the water inlet pipe with the water inlet of the reverse osmosis filter element; the first plug-in cylinder is fixedly arranged at the bottom of the shell and is connected with the clean water outlet pipe, and the water outlet of the reverse osmosis filter element is plugged into the first plug-in cylinder; the second plug-in cylinder is fixedly arranged at the bottom of the shell and is connected with the sewage outlet pipe, and the sewage outlet of the reverse osmosis filter element is plugged into the second plug-in cylinder.

[0011] Wherein, the installation tube further comprises a first clamping block and a second clamping block;

[0012] The first clamping block is fixedly arranged inside the shell; the second clamping block is fixedly arranged on one side of the packaging shell.

[0013] Wherein, the installation tube further includes a first sealing ring and a second sealing ring;

[0014] The first sealing ring is fixedly arranged in the first plug-in tube; the second sealing ring is fixedly arranged in the second plug-in tube.

[0015] Wherein, the docking piece comprises a connecting cylinder, a second threaded cylinder, a threaded tube, a sealing ring and a third plug-in cylinder;

[0016] The connecting cylinder is fixedly arranged inside the shell and is connected with the water inlet pipe; the second threaded cylinder is fixedly arranged at the bottom of the connecting cylinder; the threaded tube is threadedly connected with the second threaded cylinder and is located in the second threaded cylinder; the sealing ring is fixedly arranged on the threaded tube and is located in the connecting cylinder; the third plug-in cylinder is fixedly arranged at the bottom of the threaded tube; the water inlet of the reverse osmosis filter element is plugged into the third plug-in cylinder.

[0017] Wherein, the docking member further comprises a mounting ring and a plurality of rotating rods;

[0018] The mounting ring is fixedly arranged on the third plug-in cylinder; and the plurality of rotating rods are respectively fixedly arranged on the mounting ring.

[0019] Wherein, the docking piece further includes a third sealing ring and a fourth sealing ring;

[0020] The third sealing ring is fixedly arranged in the third plug-in cylinder; the fourth sealing ring is fixedly arranged in the connecting cylinder.

[0021] Wherein, the water inlet valve comprises a valve body, a valve core, a handle and a connecting rod;

[0022] The valve body is fixedly arranged on the top of the shell and is connected with the water inlet pipe and the connecting pipe; the valve core is slidably arranged inside the valve body, and the valve core has a through hole; the handle is rotatably arranged on the top of the valve body; the top end of the connecting rod is rotatably connected to the handle, and the bottom end of the connecting rod is rotatably connected to the valve core.

[0023] The present invention relates to a built-in purified water and reverse osmosis filtration faucet, wherein the interior of the mounting cylinder is used to mount the reverse osmosis filter element, through which the purified water outlet pipe is connected to the water outlet of the reverse osmosis filter element, the sewage outlet pipe is connected to the sewage outlet of the reverse osmosis filter element, and the water inlet pipe is connected to the water inlet of the reverse osmosis filter element; the water inlet valve is mounted on the top of the mounting cylinder, one end of the water inlet valve is connected to the water inlet pipe, and the other end is connected to the connecting pipe, and the connecting pipe is used to connect with tap water. When in use, the water inlet valve is opened, and tap water enters the reverse osmosis filter element, and the purified pure water flows from the purified water outlet pipe to the water outlet head for discharge, and the concentrated water is discharged from the sewage outlet pipe; the whole constitutes a faucet, so that while having a water purification function, the overall structure is compact, occupies less space, and meets consumer needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0025] Figure 1 It is a structural schematic diagram of a built-in water purification and reverse osmosis filtering faucet of the present invention.

[0026] Figure 2 It is a left view of a built-in water purification and reverse osmosis filtering faucet of the present invention.

[0027] Figure 3 yes Figure 2 Cross-sectional view along the AA direction.

[0028] Figure 4 The utility model is a front view of a built-in water purification and reverse osmosis filtering faucet of the present invention.

[0029] Figure 5 yes Figure 4 Cross-sectional view along direction BB.

[0030] Figure 6 yes Figure 5 A partial enlargement of detail A.

[0031] Figure 7 yes Figure 5 A partial enlargement of detail B.

[0032] Figure 8 yes Figure 5 A partial enlargement of detail C.

[0033] 1-water outlet, 2-installation cylinder, 3-reverse osmosis filter element, 4-pure water outlet pipe, 5-sewage outlet pipe, 6-water inlet pipe, 7-water inlet valve, 8-connecting pipe, 201-shell, 202-encapsulation shell, 203-first threaded cylinder, 204-screw, 205-docking piece, 206-first plug-in cylinder, 207-second plug-in cylinder, 208-first clamping block, 209-second clamping block, 210-first sealing ring, 211-second sealing ring, 2051-connecting cylinder, 2052-second threaded cylinder, 2053-threaded pipe, 2054-sealing ring, 2055-third plug-in cylinder, 2056-installation ring, 2057-rotating rod, 2058-third sealing ring, 2059-fourth sealing ring, 701-valve body, 702-valve core, 703-handle, 704-connecting rod. 7021 - Through hole. DETAILED DESCRIPTION

[0034] See also Figure 1-Figure 8 ,in, Figure 1 It is a structural schematic diagram of a built-in water purification and reverse osmosis filtering faucet of the present invention. Figure 2 It is a left view of a built-in water purification and reverse osmosis filtering faucet of the present invention. Figure 3 yes Figure 2 Cross-sectional view along the AA direction. Figure 4 The utility model is a front view of a built-in water purification and reverse osmosis filtering faucet of the present invention. Figure 5 yes Figure 4 Cross-sectional view along direction BB. Figure 6 yes Figure 5 A partial enlargement of detail A. Figure 7 yes Figure 5 A partial enlargement of detail B. Figure 8 yes Figure 5 A partial enlargement of detail C.

[0035] The present invention provides a built-in water purification and reverse osmosis filtering faucet: comprising a water outlet 1; further comprising a purification component; the purification component comprises a mounting tube 2, a reverse osmosis filter element 3, a clean water outlet pipe 4, a sewage outlet pipe 5, a water inlet pipe 6, a water inlet valve 7 and a connecting pipe 8; the mounting tube 2 comprises a shell 201, a packaging shell 202, a plurality of first threaded tubes 203, a plurality of screws 204, a docking piece 205, a first plug-in tube 206 and a second plug-in tube 207; the mounting tube 2 also comprises a first clamping block 208 and a second clamping block 209; the mounting tube 2 also comprises a first sealing ring 210 and a second sealing ring 211; the docking piece 205 includes a connecting tube 2051, a second threaded tube 2052, a threaded tube 2053, a sealing ring 2054 and a third plug-in tube 2055; the docking piece 205 also includes a mounting ring 2056 and a plurality of rotating rods 2057; the docking piece 205 also includes a third sealing ring 2058 and a fourth sealing ring 2059; the water inlet valve 7 includes a valve body 701, a valve core 702, a handle 703 and a connecting rod 704; the valve core 702 has a through hole 7021; through the above scheme, while having a water purification function, the overall structure is compact, occupies less space, and meets the needs of consumers.

[0036] Furthermore, the mounting cylinder 2 is located on one side of the water outlet head 1; the reverse osmosis filter element 3 is arranged in the mounting cylinder 2; the clean water outlet pipe 4 is connected to the water outlet head 1 and to the mounting cylinder 2, and is located on one side of the mounting cylinder 2; the sewage outlet pipe 5 is connected and arranged at the bottom of the mounting cylinder 2; the water inlet pipe 6 is connected and arranged at the top of the mounting cylinder 2; the water inlet valve 7 is fixedly arranged at the top of the mounting cylinder 2 and is connected to the water inlet pipe 6; the connecting pipe 8 is connected and arranged on one side of the water inlet valve 7.

[0037] In this embodiment, the interior of the mounting cylinder 2 is used to mount the reverse osmosis filter element 3, through the mounting cylinder 2, the clean water outlet pipe 4 is connected to the water outlet of the reverse osmosis filter element 3, the sewage outlet pipe 5 is connected to the sewage outlet of the reverse osmosis filter element 3, and the water inlet pipe 6 is connected to the water inlet of the reverse osmosis filter element 3; the water inlet valve 7 is mounted on the top of the mounting cylinder 2, one end of the water inlet valve 7 is connected to the water inlet pipe 6, and the other end is connected to the connecting pipe 8, and the connecting pipe 8 is used to connect tap water. When in use, the water inlet valve 7 is opened, and tap water enters the reverse osmosis filter element 3, and the purified pure water flows from the clean water outlet pipe 4 to the water outlet head 1 for discharge, and the concentrated water is discharged from the sewage outlet pipe 5; the whole constitutes a faucet, so that while having the water purification function, the overall structure is compact, occupies less space, and meets consumer needs.

[0038] Furthermore, the shell 201 is fixedly arranged at the bottom of the water inlet valve 7; the encapsulation shell 202 is located on one side of the shell 201; multiple first threaded barrels 203 are respectively fixedly arranged inside the shell 201; multiple screws 204 are respectively threadedly connected with multiple first threaded barrels 203, and respectively pass through the encapsulation shell 202; the docking piece 205 is arranged inside the shell 201 and is connected with the water inlet pipe 6, and the docking piece 205 is used to dock and connect the water inlet pipe 6 with the water inlet of the reverse osmosis filter element 3; the first plug-in barrel 206 is fixedly arranged at the bottom of the shell 201 and is connected with the clean water outlet pipe 4, and the water outlet of the reverse osmosis filter element 3 is plugged into the first plug-in barrel 206; the second plug-in barrel 207 is fixedly arranged at the bottom of the shell 201 and is connected with the sewage outlet pipe 5, and the sewage outlet of the reverse osmosis filter element 3 is plugged into the second plug-in barrel 207.

[0039] In this embodiment, the packaging shell 202 is detachably mounted on one side of the shell body 201 by connecting multiple screws 204 and multiple first threaded cylinders 203, so that the packaging shell 202 can be opened to replace the reverse osmosis filter element 3; the docking piece 205 is used to connect the water inlet pipe 6 and the water inlet of the reverse osmosis filter element 3, and the water outlet of the reverse osmosis filter element 3 can be plugged into the first plug-in cylinder 206 to connect with the clean water outlet pipe 4; the sewage outlet of the reverse osmosis filter element 3 can be plugged into the second plug-in cylinder 207 to connect with the sewage outlet pipe 5.

[0040] Furthermore, the first clamping block 208 is fixedly disposed inside the housing 201 ; and the second clamping block 209 is fixedly disposed on one side of the packaging shell 202 .

[0041] In this embodiment, the first clamping block 208 and the second clamping block 209 have the same shape and both have arc-shaped openings, which are adapted to the shape of the reverse osmosis filter element 3. After the packaging shell 202 is covered, the first clamping block 208 and the second clamping block 209 clamp the reverse osmosis filter element 3 from both sides, so that the reverse osmosis filter element 3 is more stably installed in the shell 201.

[0042] Furthermore, the first sealing ring 210 is fixedly disposed in the first plug-in barrel 206 ; the second sealing ring 211 is fixedly disposed in the second plug-in barrel 207 .

[0043] In this embodiment, the first sealing ring 210 is squeezed by the water outlet of the reverse osmosis filter element 3, and is used to seal the gap between the water outlet of the reverse osmosis filter element 3 and the first plug-in cylinder 206; the second sealing ring 211 is squeezed by the sewage outlet of the reverse osmosis filter element 3, and is used to seal the gap between the sewage outlet of the reverse osmosis filter element 3 and the second plug-in cylinder 207.

[0044] Furthermore, the connecting cylinder 2051 is fixedly arranged inside the shell 201 and is connected to the water inlet pipe 6; the second threaded cylinder 2052 is fixedly arranged at the bottom of the connecting cylinder 2051; the threaded tube 2053 is threadedly connected to the second threaded cylinder 2052 and is located in the second threaded cylinder 2052; the sealing ring 2054 is fixedly arranged on the threaded tube 2053 and is located in the connecting cylinder 2051; the third plug-in cylinder 2055 is fixedly arranged at the bottom of the threaded tube 2053; the water inlet of the reverse osmosis filter element 3 is plugged into the third plug-in cylinder 2055.

[0045] In this embodiment, the connecting cylinder 2051 is connected to the water inlet pipe 6, and the second threaded cylinder 2052 is used to threadably install the threaded tube 2053. Rotating the threaded tube 2053 can drive the third plug-in cylinder 2055 to rise and fall. When it is necessary to take out the reverse osmosis filter element 3, the packaging shell 202 is opened, and the threaded tube 2053 is rotated to drive the third plug-in cylinder 2055 to move up and no longer dock with the water inlet of the reverse osmosis filter element 3. Then, the reverse osmosis filter element 3 is moved up, so that the water outlet and the sewage outlet are respectively moved out from the first plug-in cylinder 206 and the second plug-in cylinder 207, that is, The reverse osmosis filter element 3 can be taken out; when installing the reverse osmosis filter element 3, the water outlet and the sewage outlet of the reverse osmosis filter element 3 are respectively inserted into the first plug-in cylinder 206 and the second plug-in cylinder 207 for communication, and at this time, the water inlet of the reverse osmosis filter element 3 is located directly below the third plug-in cylinder 2055, and then the threaded tube 2053 is rotated to drive the third plug-in cylinder 2055 to move downward and dock with the water inlet of the reverse osmosis filter element 3. The water inlet pipe 6 is connected to the water inlet of the reverse osmosis filter element 3 through the connecting cylinder 2051, the threaded tube 2053 and the third plug-in cylinder 2055.

[0046] Furthermore, the mounting ring 2056 is fixedly disposed on the third plug-in cylinder 2055 ; and the plurality of rotating rods 2057 are respectively fixedly disposed on the mounting ring 2056 .

[0047] In this embodiment, the mounting ring 2056 is fixedly mounted on the third plug-in tube 2055 for fixing a plurality of the rotating rods 2057 . The third plug-in tube 2055 can be conveniently rotated by using the plurality of rotating rods 2057 to drive the threaded tube 2053 to rotate.

[0048] Furthermore, the third sealing ring 2058 is fixedly disposed in the third plug-in cylinder 2055 ; and the fourth sealing ring 2059 is fixedly disposed in the connecting cylinder 2051 .

[0049] In this embodiment, the third sealing ring 2058 is squeezed by the water inlet of the reverse osmosis filter element 3, and is used to seal the gap between the water inlet of the reverse osmosis filter element 3 and the third plug-in tube 2055; the fourth sealing ring 2059 is squeezed by the sealing ring 2054, and is used to seal the gap between the sealing ring 2054 and the inner wall of the connecting tube 2051 to avoid water leakage.

[0050] Furthermore, the valve body 701 is fixedly arranged on the top of the shell 201 and is connected with the water inlet pipe 6 and the connecting pipe 8; the valve core 702 is slidably arranged inside the valve body 701, and the valve core 702 has a through hole 7021; the handle 703 is rotatably arranged on the top of the valve body 701; the top end of the connecting rod 704 is rotatably connected to the handle 703, and the bottom end of the connecting rod 704 is rotatably connected to the valve core 702.

[0051] In this embodiment, the right water outlet of the valve body 701 is connected to the water inlet pipe 6, and the left water inlet is connected to the connecting pipe 8. The through hole 7021 of the valve core 702 is arranged horizontally. When the handle 703 is lifted upward, the connecting rod 704 pulls up the valve core 702, and the through hole 7021 gradually moves upward to connect the right water outlet with the left water inlet. The more the valve core 702 moves upward, the greater the tap water flow rate is, until the through hole 7021 is completely aligned with the right water outlet and the left water inlet, and the flow rate is maximum. The handle 703 is pressed down, and the connecting rod 704 drives the valve core 702 to move downward, and the through hole 7021 moves downward, and the tap water flow rate gradually decreases until the through hole 7021 no longer connects the right water outlet with the left water inlet, and it is in a closed state at this time.

[0052] The present embodiment describes a built-in purified water and reverse osmosis filtration faucet, wherein the interior of the mounting cylinder 2 is used to mount the reverse osmosis filter element 3, through which the purified water outlet pipe 4 is connected to the water outlet of the reverse osmosis filter element 3, the sewage outlet pipe 5 is connected to the sewage outlet of the reverse osmosis filter element 3, and the water inlet pipe 6 is connected to the water inlet of the reverse osmosis filter element 3; the water inlet valve 7 is mounted on the top of the mounting cylinder 2, one end of the water inlet valve 7 is connected to the water inlet pipe 6, and the other end is connected to the connecting pipe 8, and the connecting pipe 8 is used to connect tap water. When in use, the water inlet valve 7 is opened, and tap water enters the reverse osmosis filter element 3, and the purified pure water flows from the purified water outlet pipe 4 to the water outlet head 1 for discharge, and the concentrated water is discharged from the sewage outlet pipe 5; the whole constitutes a faucet, so that while having a water purification function, the overall structure is compact, occupies less space, and meets consumer needs. Furthermore, only when the water inlet valve 7 is opened, high-pressure tap water enters the structure behind the connecting pipe 8. When the water inlet valve 7 is closed, no tap water enters the structure behind the connecting pipe 8, so there is no risk of water leakage.

[0053] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A built-in water purification and reverse osmosis filtration faucet, comprising a water outlet; characterized in that: Also included is a purification component; The purification assembly includes a mounting cartridge, a reverse osmosis filter element, a clean water outlet pipe, a sewage outlet pipe, a water inlet pipe, a water inlet valve and a connecting pipe; The installation cylinder is located at one side of the water outlet head; the reverse osmosis filter element is arranged in the installation cylinder; the clean water outlet pipe is connected with the water outlet head and the installation cylinder, and is located at one side of the installation cylinder; the sewage outlet pipe is connected and arranged at the bottom of the installation cylinder; the water inlet pipe is connected and arranged at the top of the installation cylinder; the water inlet valve is fixedly arranged at the top of the installation cylinder and is connected with the water inlet pipe; the connecting pipe is connected and arranged at one side of the water inlet valve.

2. A built-in water purification and reverse osmosis filtration faucet as claimed in claim 1, characterized in that: The installation cylinder comprises a shell, a packaging shell, a plurality of first threaded cylinders, a plurality of screws, a docking piece, a first plug-in cylinder and a second plug-in cylinder; The shell is fixedly arranged at the bottom of the water inlet valve; the packaging shell is located at one side of the shell; a plurality of the first threaded barrels are respectively fixedly arranged inside the shell; a plurality of the screws are respectively threadedly connected with the plurality of the first threaded barrels and respectively pass through the packaging shell; the docking piece is arranged inside the shell and is connected with the water inlet pipe, and the docking piece is used to connect the water inlet pipe with the water inlet of the reverse osmosis filter element; the first plug-in cylinder is fixedly arranged at the bottom of the shell and is connected with the clean water outlet pipe, and the water outlet of the reverse osmosis filter element is plugged into the first plug-in cylinder; the second plug-in cylinder is fixedly arranged at the bottom of the shell and is connected with the sewage outlet pipe, and the sewage outlet of the reverse osmosis filter element is plugged into the second plug-in cylinder.

3. A built-in water purification and reverse osmosis filtration faucet as claimed in claim 2, characterized in that: The mounting tube also includes a first clamping block and a second clamping block; The first clamping block is fixedly arranged inside the shell; the second clamping block is fixedly arranged on one side of the packaging shell.

4. A built-in water purification and reverse osmosis filtration faucet as claimed in claim 3, characterized in that: The installation tube also includes a first sealing ring and a second sealing ring; The first sealing ring is fixedly arranged in the first plug-in tube; the second sealing ring is fixedly arranged in the second plug-in tube.

5. A built-in water purification and reverse osmosis filtration faucet as claimed in claim 4, characterized in that: The docking piece includes a connecting cylinder, a second threaded cylinder, a threaded tube, a sealing ring and a third plug-in cylinder; The connecting cylinder is fixedly arranged inside the shell and is connected with the water inlet pipe; the second threaded cylinder is fixedly arranged at the bottom of the connecting cylinder; the threaded tube is threadedly connected with the second threaded cylinder and is located in the second threaded cylinder; the sealing ring is fixedly arranged on the threaded tube and is located in the connecting cylinder; the third plug-in cylinder is fixedly arranged at the bottom of the threaded tube; the water inlet of the reverse osmosis filter element is plugged into the third plug-in cylinder.

6. A built-in water purification and reverse osmosis filtration faucet as claimed in claim 5, characterized in that: The docking member also includes a mounting ring and a plurality of rotating rods; The mounting ring is fixedly arranged on the third plug-in cylinder; and the plurality of rotating rods are respectively fixedly arranged on the mounting ring.

7. A built-in water purification and reverse osmosis filtration faucet as claimed in claim 6, characterized in that: The docking piece also includes a third sealing ring and a fourth sealing ring; The third sealing ring is fixedly arranged in the third plug-in cylinder; the fourth sealing ring is fixedly arranged in the connecting cylinder.

8. A built-in water purification and reverse osmosis filtration faucet as claimed in claim 7, characterized in that: The water inlet valve comprises a valve body, a valve core, a handle and a connecting rod; The valve body is fixedly arranged on the top of the shell and is connected with the water inlet pipe and the connecting pipe; the valve core is slidably arranged inside the valve body, and the valve core has a through hole; the handle is rotatably arranged on the top of the valve body; the top end of the connecting rod is rotatably connected to the handle, and the bottom end of the connecting rod is rotatably connected to the valve core.

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