Self-cleaning faucet

Abstract

The self-cleaning faucet comprises a shell, a valve element assembly and a handle, the valve element assembly is installed in a pipe opening of the shell, the valve element assembly comprises a valve body, a water inlet and a water outlet, the water inlet and the water outlet are formed in the two sides of the valve body respectively, a movable piece for controlling the water inlet to be opened and closed is arranged in the valve body, and the handle is rotatably arranged at the position of the pipe opening of the shell. The handle is internally provided with a water outlet pipeline, an end cap and a faucet water opening, wherein the water outlet pipeline is communicated with the water outlet. The water inlet of the valve body, the moving plate, the water outlet, the rotary adjusting piece, the handle and the water inlet end of the water outlet pipeline in the handle are all located on the same straight line, so that the waterway structure is simple, and the shell and the valve element assembly are easier and more convenient to manufacture, machine and assemble; and moreover, the adjusting handle and the faucet are integrated, so that the faucet structure is simplified, the cost is saved, and a self-cleaning effect can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of faucets, and more specifically refers to a self-cleaning faucet. Background Art

[0002] Faucet is the common name for water valve. As the terminal control element of the water supply system, it is used to control the water flow and the on-off switch. It is an indispensable product in life. The control valve of a traditional faucet is installed in the faucet, and the control valve is opened and closed by operating the handle on the faucet. However, due to the frequent operation of the handle, the handle will inevitably be contaminated with various dirt or bacteria, especially in public places with a large flow of people, where faucets are frequently used and the number of people in contact is complex, making this problem more prominent. Therefore, people designed induction faucets. Since induction faucets do not require contact with the handle, they can better solve the defects of traditional faucets. However, induction faucets are expensive, have a slow water output response, and the sensor is easily damaged and malfunctions, and often cannot be used normally.

[0003] For this reason, self-cleaning faucets have appeared on the market, such as the Chinese invention patent with application number 202111332429.7, which is a stainless steel self-cleaning faucet. By designing a No. 2 water pipe, a cleaning chamber, a spring, a push slider and other structures, water is diverted from the control valve to the water handle to complete self-cleaning. However, the internal structure of the faucet is quite complicated, the manufacturing process is cumbersome and difficult, and the cost is high. Or, as in the Chinese utility model patent with application number 201920702931.4, a push-type self-cleaning faucet is hinged to the front end of the water flow channel. The push switch controls the opening and closing of the valve through the pry rod linkage, so that the water flows through the upper surface of the push switch to achieve a certain degree of cleaning effect. However, the cleaning effect of the faucet is poor, the water flow cannot be controlled, and the push switch and its linked pry rod, ratchet structure, internal connecting rod and other structures are complex and precise, the assembly process is difficult, and the stability of the push connecting rod structure is poor. Long-term and frequent pressing actions are prone to cause the connecting rod to be dislocated and broken, and the failure rate is high. Utility Model Content

[0004] The utility model aims to provide a self-cleaning faucet to solve the problems of the existing self-cleaning faucet having a complex structure, poor stability and durability, etc.

[0005] The utility model adopts the following technical solutions:

[0006] A self-cleaning faucet comprises a shell, a valve core assembly and a handle, wherein the valve core assembly is installed in the shell, the valve core assembly comprises a valve body and a water inlet and a water outlet respectively arranged on both sides of the valve body, a ceramic assembly which supports each other and cooperates to control the water flow rate is arranged in the valve body, the ceramic assembly comprises a static plate, a dynamic plate and a supporting seal, the supporting seal supports the static plate so that the static plate and the dynamic plate are in close contact, the water inlet is arranged on the static plate, the static plate is clamped in the valve body, and the dynamic plate is rotatably supported on the static plate; the handle is rotatably arranged at the water outlet position of the shell and is fixedly connected to the dynamic plate, and the rotating angle of the dynamic plate and the static plate is controlled to open and close the water outlet, a water outlet pipeline connected to the water outlet is also arranged in the handle, end caps and faucet water outlets are respectively arranged at both ends of the handle, and the water outlet pipeline is respectively connected to the end caps and the faucet water outlet.

[0007] Furthermore, the valve body includes a hollow tubular valve shell, an end of the valve shell in the water outlet direction is provided with a water outlet end cover, the water outlet is arranged on the water outlet end cover, the top holding seal, static plate and moving plate are installed in the valve shell in sequence, and the side of the moving plate facing the handle direction is connected with a rotating adjustment member, and the rotating adjustment member passes through the water outlet end cover and is connected to the end cap of the handle.

[0008] Preferably, the rotary adjustment member is a rotary adjustment block, one side of the rotary adjustment block is provided with a fixed block engaged with the movable plate, the other side of the rotary adjustment block is provided with a side gear platform connected to the handle, the movable plate is provided with a fixed slot cooperating with the fixed block, the inner side wall of the end cap is surrounded by internal teeth cooperating with the side gear platform, and the water outlet is arranged through the rotary adjustment block.

[0009] Further preferably, a plurality of damping bayonet holes are provided on the side of the water outlet end cover facing the end cap, and the damping bayonet holes are arranged around the central axis of the water outlet end cover as the axis, and an elastic telescopic card column cooperating with the damping bayonet holes is provided on the side of the end cap facing the water outlet end cover, and the elastic telescopic card column and the damping bayonet holes are used to prevent the handle from falling due to gravity.

[0010] Preferably, the rotation adjustment member is a rotating shaft, one end of the rotating shaft is fixedly provided with a fixed block engaged with the moving plate, the other end of the rotating shaft passes through the water outlet end cover and is fixedly connected to the handle, the moving plate is provided with a fixed groove cooperating with the fixed block, the inner bottom of the end cap is provided with an axis hole seat fixedly connected to the other end of the rotating shaft, the inner side wall of the axis hole of the axis hole seat is provided with internal teeth, and the outer side wall of the other end of the rotating shaft is provided with external teeth meshing with the internal teeth.

[0011] Further preferably, a damping limit module is provided at the center of the water outlet cover and is penetrated by the rotating shaft and is used to prevent the handle from falling due to gravity.

[0012] Furthermore, the handle is a straight handle or a quasi-inline crank, the faucet spout is arranged at the end of the handle, the end side wall of the handle is provided with a plurality of clean water holes, and the end of the faucet spout is provided with a water-blocking step.

[0013] Furthermore, when the handle is tilted to the lower limit, the moving plate in the valve body completely blocks the water inlet, and when the handle is lifted, the moving plate in the valve body opens the water inlet.

[0014] Further, the valve housing is detachably connected to the pipe opening of the shell; or the valve housing and the pipe opening of the shell are integrally formed, and the water outlet end cover is threadedly connected to the valve housing.

[0015] Furthermore, a bubbler is embedded in the water outlet pipe of the handle, and the finger-touching portion of the handle is coated with an anti-fouling coating, which is a Teflon coating or a polytetrafluoroethylene coating.

[0016] Furthermore, a water outlet block for a hand-held rotating handle is provided on the faucet water outlet, the water outlet block is a slot body structure, the slot of the water outlet block is connected to the faucet water outlet, and the slot wall of the water outlet block is provided with a plurality of cleaning water holes.

[0017] From the above description of the structure of the utility model, it can be seen that compared with the prior art, the utility model has the following advantages:

[0018] 1. The water circuit structure of the shell of the utility model is simple. The water inlet, movable plate, water outlet, rotary adjusting member, handle and water inlet end of the water outlet pipe in the handle are all located on the same straight line, making the manufacture, processing and assembly of the shell and valve core assembly simpler and more convenient. Moreover, the handle not only serves as the on-off switch for controlling the valve core assembly, but also has a built-in water outlet pipe, and a faucet water outlet is provided at the end of the handle, which can achieve self-cleaning while discharging water through the faucet water outlet.

[0019] 2. The self-cleaning effect of the utility model is remarkable. When the handle is tilted to the lower limit, the faucet is in the closed state. When the handle is lifted, the faucet is in the open state. At the same time, a cleaning water hole is designed at the faucet water outlet. After the faucet is used, when the faucet is turned off, the handle tilted downward can allow the water retained in the handle to continue to flow out, and through the bubbler arranged in the handle, the water retained in the handle is prevented from being lost quickly, ensuring that the retained water can seep out from the cleaning water hole to thoroughly clean the end of the handle.

[0020] 3. The valve core assembly of the utility model is designed with structures such as a damping bayonet or a damping limit module to control and position the rotation range of the handle, thereby controlling the opening and closing size of the water inlet and achieving water flow regulation of the faucet.

[0021] 4. The utility model has an anti-fouling coating on the end of the handle, that is, the finger-touching part of the handle. The anti-fouling coating is preferably a Teflon coating or a polytetrafluoroethylene coating. The anti-fouling coating made of the above materials has a strong anti-adhesion ability, which can effectively reduce the adhesion of grease, bacteria, and dirt to the faucet spout, and is conducive to the water flow to take away grease, bacteria and dirt. In addition, the anti-fouling coating can also play an obvious indication effect, reminding the user to touch the handle at this position.

[0022] 5. In order to further improve the self-cleaning ability, the utility model can also be provided with a water outlet block for holding and rotating the handle on the faucet outlet, and the faucet outlet is replaced by the water outlet block. The inwardly concave curved groove wall is used to reduce the hand-held touch area, and a certain water outlet gap is left between the top surface of the water outlet block and the handle. The water outlet gap can be used to assist water outlet and further improve the self-cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural schematic diagram of the first embodiment of the utility model.

[0024] Figure 2 This is a schematic diagram of the first embodiment of the utility model.

[0025] Figure 3 This is a schematic diagram of the structure of a rotary adjustment block according to a first embodiment of the utility model.

[0026] Figure 4 This is a schematic diagram of the decomposition of the valve core assembly of Example 1 of the utility model.

[0027] Figure 5 This is a schematic diagram of the decomposition of the second embodiment of the utility model.

[0028] Figure 6 This is a schematic diagram of the exploded view of the rotating shaft, the water outlet end cover and the end cap of the second embodiment of the utility model.

[0029] Figure 7 This is a schematic diagram of the first design structure of the water outlet block in Example 3 of the utility model.

[0030] Figure 8 This is a schematic diagram of the second design structure of the water outlet block in Example 3 of the utility model.

[0031] Fig. 9 This is a schematic diagram of the third design structure of the water outlet block in Example 3 of the utility model.

[0032] Among them, the numbers in the figure are: shell 10, step 11, top holding seal 12, water inlet 21, water outlet 22, moving plate 23, fixed slot 231, valve housing 241, static plate 242, water outlet end cover 243, rotary adjustment block 25, fixed block 251, side gear table 252, damping bayonet 26, elastic telescopic clamping column 27, rotating shaft 28, damping limit module 29, handle 30, end cap 31, shaft hole seat 311, faucet water outlet 32, water blocking step 33, cleaning water hole 34, water outlet block 40. DETAILED DESCRIPTION

[0033] The specific implementation of the embodiment of the utility model is described below with reference to the accompanying drawings.

[0034] Embodiment 1

[0035] Reference Figure 1 and Figure 2 A self-cleaning faucet includes a shell 10, a valve core assembly and a handle 30. The valve core assembly is installed in the pipe mouth of the shell 10. The shell 10 is preferably a tubular structure. The pipe mouth at one end of the shell 10 is provided with a threaded joint connected to a water supply pipeline, and the pipe mouth at the other end is provided with a step 11 for assembling the valve core assembly. The shell 10 of the utility model can be installed in a water supply pipeline at normal temperature, and can also be used in a hot and cold water supply pipeline with a hot and cold valve, or in a water supply pipeline equipped with a thermostatic valve, so as to be used in winter.

[0036] Reference Figures 2 to 4 The valve core assembly includes a valve body and a water inlet 21 and a water outlet 22 respectively arranged on both sides of the valve body. A ceramic assembly is arranged in the valve body, which supports each other and cooperates to control the water flow. The ceramic assembly includes a static plate 242, a dynamic plate 23 and a supporting seal 12. The supporting seal 12 supports the static plate 242 so that the static plate 242 and the dynamic plate 23 are in close contact. The water inlet 21 is arranged on the static plate 242, and the static plate 242 is clamped and fixed in the valve body. The dynamic plate 23 is rotatably supported on the static plate 242 and controls the opening and closing of the water inlet 21; the handle 30 is rotatably arranged at the water outlet position of the housing 10, and is fixedly connected to the dynamic plate 23, and controls the rotation angle of the dynamic plate 23 and the static plate 242 to open and close the water outlet 21.

[0037] Reference Figure 1The handle 30 adopts a straight handle or a crank handle similar to a straight handle. A water outlet pipe connected to the water outlet 22 is also provided in the handle 30. End caps 31 and faucet water outlets 32 are respectively provided at both ends of the handle 30. The water outlet pipes are respectively connected to the end caps 31 and the faucet water outlets 32. When the handle 30 is tilted to the lower limit, the moving piece 23 in the valve body completely blocks the water inlet 21. When the handle 30 is lifted, the moving piece 23 in the valve body opens the water inlet 21. The faucet water outlet 32 ​​is arranged at the end of the handle 30. The side wall of the end of the handle 30 is provided with a plurality of clean water holes 34. The clean water holes 34 are preferably arranged on the side wall of the bottom surface of the end of the handle 30. A water blocking step 33 is provided at the end of the faucet water outlet 32. The water blocking step 33 can reduce the speed of water when the handle 30 is just opened, so that part of the water can seep out from the clean water hole 34.

[0038] A bubbler (not shown) is embedded in the water outlet pipe of the handle 30. The bubbler refers to a device that has a foaming effect on water flow and saves water. Its structure is a prior art and will not be described in detail here. In addition to allowing the flowing water and air to be fully mixed, thereby reducing the impact of the water flow and saving water, the bubbler of the utility model can also play an unexpected role during self-cleaning, which will be discussed in detail later.

[0039] In addition, since the faucet spout 32 of the handle 30 is frequently touched as a switch in addition to discharging water, in order to further provide a self-cleaning effect and at the same time remind the user to touch the position, the utility model is coated with an anti-fouling coating at the end of the handle 30, that is, the position of the faucet spout 32, and the coating range of the anti-fouling coating includes the inner and outer side walls of the faucet spout 32. The anti-fouling coating is preferably a Teflon coating or a polytetrafluoroethylene coating. The anti-fouling coating made of the above materials has a strong anti-adhesion ability, which can effectively reduce the adhesion of grease, bacteria, and dirt to the faucet spout 32, and at the same time facilitates the water flow to carry away grease, bacteria and dirt. In addition, the anti-fouling coating can also play an obvious indication effect, reminding the user to touch the handle 30 at this position.

[0040] Reference Figures 2 to 4 , the structure of the valve core assembly of this embodiment is further expanded below: the valve body of the valve core assembly includes a hollow tubular valve housing 241, one end of the valve housing 32 in the water outlet direction is provided with a water outlet end cover 243, and the water outlet 22 is provided on the water outlet end cover 243. In some embodiments of the utility model, the valve housing 241 and the water outlet end cover 243 are designed to be integrally formed, the static piece 242 is fixed in the valve housing 241 by snap connection, and then the valve housing 241 can be fixedly installed in the pipe mouth of the housing 10 by threaded connection or other detachable connection methods. In other embodiments, the valve housing 241 can also be integrally formed and injection molded in the pipe mouth of the housing 10, and the housing 10 and the water outlet end cover 243 are provided with mutually matching threads, and the other parts of the valve core assembly are first installed in the valve housing 241, and finally the water outlet end cover 243 is screwed to the pipe mouth of the housing 10 by thread.

[0041] Reference Figures 2 to 4 The moving piece 23 is arranged between the static piece 242 and the water outlet end cover 243. The top seal 12, the static piece 242 and the moving piece 23 are sequentially installed in the valve housing 241. The top seal 12 is supported on the step 11 on one side and supported on the static piece 242 on the other side. The top seal 12 is preferably a rubber pad with a hollow ring structure. The side of the moving piece 23 facing the handle 30 is connected with a rotary adjustment member, and the rotary adjustment member passes through the water outlet end cover 243 and is connected with the end cap 31 of the handle 30. In this embodiment, the rotary adjustment member is a rotary adjustment block 25. The rotary adjustment block 25 is provided with a fixed block 251 engaged with the moving piece 23 on one side, and a side gear stage 252 connected with the handle 30 on the other side of the rotary adjustment block 25. The movable plate 23 is provided with a fixed slot 231 that cooperates with the fixed block 251, the side wall of the side gear platform 252 is surrounded by external teeth, the inner wall of the end cap 31 is surrounded by internal teeth that mesh with the external teeth of the side gear platform 252, and the water outlet 22 is set through the rotating adjustment block 25.

[0042] In addition, in order to further improve the connection stability between the handle 30 and the rotary adjustment member, a bolt can be passed through the end cap 31 of the handle 30 to be threadedly locked with the rotary adjustment member. In order to improve the sealing performance of the valve core assembly, a sealing ring can be provided on the outer wall of the water outlet end cover 243 or on the rotary adjustment block.

[0043] Again, refer to Figure 2 and Figure 4 In order to conveniently or accurately control the water output of the faucet of the utility model, the utility model has a plurality of damping bayonet holes 26 on the side of the water outlet end cover 243 facing the end cap 31. The damping bayonet holes 26 are arranged around the central axis of the water outlet end cover 243. The side of the end cap 31 facing the water outlet end cover 243 is provided with an elastic telescopic clamping column 27 that cooperates with the damping bayonet holes 26. The elastic telescopic clamping column 27 can be a positioning convex point made of plastic material, or an elastic telescopic clamping column 27 with a spring telescopic structure. The specific structure of the elastic telescopic clamping column 27 with a spring telescopic structure is a conventional technology for limiting the position of the clamping point in the field, which will not be described in detail here. The elastic telescopic clamping column 27 and the damping bayonet hole 26 cooperate to prevent the handle from falling due to gravity. The end of the damping bayonet hole 26 is provided with a high platform for limiting the movement of the telescopic clamping column 27.

[0044] Reference Figures 1 to 4When the faucet of the utility model is in the closed state and the handle 30 is tilted to the lower limit, the movable plate 23 in the valve body blocks the water inlet 21; when washing hands, the handle 30 is gradually lifted upward, and the handle 30 rotates upward with the center line of the end cap 31 as the axis, thereby driving the rotary adjustment block 25 to rotate, driving the movable plate 23 to rotate, so that the movable plate 23 and the water outlet 22 are gradually misaligned, and then the water outlet 22 is gradually opened; the overall lifting action can be used to adjust the water volume in sections through the damping bayonet 26, as well as the lifting amplitude and lifting state of the fixed handle 30; when the faucet is in use, since the faucet water outlet 32 ​​is directly arranged at the end of the handle 30, the faucet handle 30 can also be quickly cleaned while the water is discharged, and in order to further improve the cleaning effect, the utility model also provides a cleaning water hole 34 at the bottom of the end of the handle 30, so that the end wall of the handle 30 is cleaned. Furthermore, when the faucet is used, the handle 30 is pressed down to return to the downward tilted state. At this time, the water retained in the handle 30 can also perform a final slow cleaning on the handle 30. In particular, the utility model also embeds a bubbler in the handle 30. The bubbler can prevent the retained water in the handle 30 from being lost quickly, and ensure that the retained water can slowly seep out from the cleaning water hole 34 to thoroughly clean the end of the handle 30.

[0045] Embodiment 2

[0046] Reference Figure 5 and Figure 6 The structure of this embodiment is basically the same as that of the first embodiment, except that: the rotating adjustment member is a rotating shaft 28, one end of the rotating shaft 28 is fixedly provided with a fixed block 251 engaged with the moving plate 23, the other end of the rotating shaft 28 passes through the water outlet end cover 243 and is fixedly connected to the handle 30, the moving plate 23 is provided with a fixed slot 231 matched with the fixed block 251, the inner bottom of the end cap 31 is provided with an axis hole seat 311 fixedly connected to the other end of the rotating shaft 28, the inner side wall of the axis hole of the axis hole seat 311 is provided with internal teeth, and the outer side wall of the other end of the rotating shaft 28 is provided with external teeth meshing with the internal teeth. In order to conveniently or accurately control the water output of the faucet of the utility model, a damping limit module 29 is provided at the center of the water outlet end cover 243, which is penetrated by the rotating shaft 28 and is used to prevent the handle 30 from falling due to gravity. Preferably, the damping limit module 29 uses a conventional damping bearing on the market to control and adjust the rotation amplitude of the handle 30, thereby controlling and adjusting the water flow of the faucet.

[0047] Embodiment 3

[0048] The structure of this embodiment is basically the same as that of the first embodiment, except that: the faucet water outlet 32 ​​of this embodiment is not designed with a water blocking step 33, but a water outlet block 40 for being held and turned by the handle 30 is provided on the faucet water outlet 32, and the water outlet block 40 is a slot structure, and the slot of the water outlet block 40 is connected to the faucet water outlet 32, and the slot wall of the water outlet block 40 is provided with a plurality of cleaning water holes 34, which can be used as the water outlet end of the faucet in addition to being used to clean the water outlet block 40. In the utility model, the water outlet block 40 can be an independent part, and then fixed to the faucet water outlet 32 ​​position of the handle 30 by means of thread, clamping, etc.; it can also be integrally formed with the handle 30.

[0049] Reference Figure 7 and Fig. 9 In some embodiments, the water block 40 adopts a rectangular trough structure, and in order to reduce the contact area between the hand and the water block 40, the side wall of the rectangular trough is preferably a curved side wall structure that is concave inward. The cleaning water hole 34 can be set on any one or more sides of the water block 40. In addition, the water block 40 and the faucet water outlet 32 ​​of the handle 30 can be as follows Figure 7 The close fit shown can also be Figure 8 and Fig. 9 As shown, a certain water outlet gap is left between the top surface of the water outlet block 40 and the handle 30 , and the water outlet gap can assist in water outlet and assist in cleaning the water outlet block 40 .

[0050] The above is only a specific implementation method of the utility model, but the design concept of the utility model is not limited to this. Any non-substantial changes to the utility model using this concept shall be deemed as an infringement of the protection scope of the utility model.

Claims

1. A self-cleaning faucet, characterized in that: It includes a shell, a valve core assembly and a handle, the valve core assembly is installed in the shell, the valve core assembly includes a valve body and a water inlet and a water outlet respectively arranged on both sides of the valve body, the valve body is provided with a ceramic assembly that supports each other and cooperates to control the water flow, the ceramic assembly includes a static plate, a dynamic plate and a supporting seal, the supporting seal supports the static plate so that the static plate and the dynamic plate are in close contact, the water inlet is arranged on the static plate, the static plate is clamped in the valve body, and the dynamic plate is rotatably supported on the static plate; the handle is rotatably arranged at the water outlet position of the shell and is fixedly connected with the dynamic plate, and the rotation angle of the dynamic plate and the static plate is controlled to open and close the water outlet, a water outlet pipeline connected with the water outlet is also provided in the handle, end caps and faucet water outlets are respectively provided at both ends of the handle, and the water outlet pipeline is respectively connected with the end caps and the faucet water outlet.

2. A self-cleaning faucet according to claim 1, characterized in that: The valve body includes a hollow tubular valve shell, one end of the valve shell in the water outlet direction is provided with a water outlet end cover, the water outlet is arranged on the water outlet end cover, the top holding seal, static plate and movable plate are installed in the valve shell in sequence, the side of the movable plate facing the handle direction is connected with a rotating adjustment member, the rotating adjustment member passes through the water outlet end cover and is connected with the end cap of the handle.

3. A self-cleaning faucet according to claim 2, characterized in that: The rotary adjustment member is a rotary adjustment block, one side of the rotary adjustment block is provided with a fixed block engaged with the movable plate, the other side of the rotary adjustment block is provided with a side gear platform connected to the handle, the movable plate is provided with a fixed slot matched with the fixed block, the inner side wall of the end cap is surrounded by internal teeth matched with the side gear platform, and the water outlet is arranged through the rotary adjustment block.

4. A self-cleaning faucet according to claim 3, characterized in that: A plurality of damping bayonet holes are provided on the side of the water outlet end cover facing the end cap, and the damping bayonet holes are arranged around the central axis of the water outlet end cover as the axis. An elastic telescopic clamping column cooperating with the damping bayonet holes is provided on the side of the end cap facing the water outlet end cover, and the elastic telescopic clamping column and the damping bayonet holes are used to prevent the handle from falling due to gravity.

5. The self-cleaning faucet according to claim 2, characterized in that: The rotary adjustment member is a rotating shaft, one end of the rotating shaft is fixedly provided with a fixed block engaged with the moving plate, the other end of the rotating shaft passes through the water outlet end cover and is fixedly connected to the handle, the moving plate is provided with a fixed slot that cooperates with the fixed block, the inner bottom of the end cap is provided with an axis hole seat fixedly connected to the other end of the rotating shaft, the inner side wall of the axis hole of the axis hole seat is provided with internal teeth, and the outer side wall of the other end of the rotating shaft is provided with external teeth meshing with the internal teeth.

6. A self-cleaning faucet according to claim 5, characterized in that: A damping limit module is provided at the center of the water outlet cover and is penetrated by the rotating shaft and is used to prevent the handle from falling due to gravity.

7. The self-cleaning faucet according to claim 1, characterized in that: The handle is a straight handle or a quasi-straight handle, the faucet spout is arranged at the end of the handle, the end side wall of the handle is provided with a plurality of clean water holes, and the end of the faucet spout is provided with a water blocking step.

8. The self-cleaning faucet according to claim 1, characterized in that: When the handle is tilted to the lower limit, the moving plate in the valve body completely blocks the water inlet. When the handle is lifted, the moving plate in the valve body opens the water inlet. A bubbler is embedded in the water outlet pipe of the handle, and the finger-touched part of the handle is coated with an anti-fouling coating.

9. The self-cleaning faucet according to claim 2, characterized in that: The valve housing is detachably connected to the pipe opening of the shell; or the valve housing and the pipe opening of the shell are integrally formed, and the water outlet end cover is threadedly connected to the valve housing.

10. The self-cleaning faucet according to claim 1, characterized in that: The faucet water outlet is provided with a water outlet block for holding a rotating handle, the water outlet block is a slot body structure, the slot of the water outlet block is connected with the faucet water outlet, and the slot wall of the water outlet block is provided with a plurality of cleaning water holes.

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