Self-cleaning faucet control valve and self-cleaning faucet applying same

Abstract

The present application relates to a kind of self-cleaning faucet control valve and the self-cleaning faucet of application thereof, comprising: valve body, with water inlet;Valve core assembly, including valve sleeve and valve core, valve sleeve has water passage;Rotary sleeve, rotatably arranged in the bottom of valve body, with the lower end of valve core is linked;Valve body water inlet includes the first water inlet connected with the cold water channel of faucet and the second water inlet connected with the hot water channel of faucet, water passage includes the first water passage opposite to first water inlet and the second water passage opposite to second water inlet, the upper end of valve core has the gap portion for water flow, during the rotation of valve core, gap portion can be opposite at least one of first water passage and second water passage to make control valve be in water passing state and be misaligned arrangement with first water passage and second water passage to make control valve be in water cut state.Cold water, hot water and cold-hot mixed water can be switched and used by user rotating rotary sleeve, improve the use experience of user.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of control valves, in particular to a self-cleaning faucet control valve installed at the water outlet of a faucet for self-cleaning and a self-cleaning faucet using the same. BACKGROUND

[0002] A conventional faucet control valve is installed in a faucet and is opened and closed by operating a handle on the faucet. However, after repeated operation of the handle, various dirt and bacteria will inevitably be generated on the handle, especially for a handle-type faucet installed in a public place, which will be more obvious, thus requiring cleaning personnel to clean or disinfect in time. For this reason, people have designed an induction faucet, which can better overcome the defects of the conventional faucet since the induction faucet does not need to contact the handle. However, the induction sensor in the induction faucet is prone to damage and often cannot be used normally and reliably.

[0003] Therefore, people have designed a self-cleaning faucet control valve, such as the control valve disclosed in the Chinese patent publication No. CN204961877U, which includes a valve body installed in the water outlet of a faucet, an inner thread formed around a water flow channel in the water outlet of the faucet, a water passing hole provided at one end of the valve body, a valve rod provided at the other end of the valve body, an outer thread formed on the outer circumferential surface of one end of the valve body and matched with the inner thread, and a water outlet hole provided on the side surface of the valve body. In use, the water flowing out of the water outlet hole on the outer circumferential surface of one end of the valve body can automatically wash the valve rod at the other end of the valve body, thereby achieving the purpose of self-cleaning handle. However, since the tap water in the faucet has a certain pressure, when the tap water in the faucet flows out of the water outlet hole on the outer circumferential surface of the valve body, the water pressure will first be radially ejected outward, and then will fall down due to gravity, which will cause splashing of water, disordered and non-concentrated water flow, and different radial ejection distances due to different water pressures. Obviously, such a design will affect the normal use of water below the faucet to some extent, and most of the water flow does not flow down along the valve body wall, so the cleaning effect is not very ideal.

[0004] For example, application No. CN202021987353.2 (authorized publication No. CN213332535U) discloses a self-cleaning faucet control valve, which comprises a valve body, a valve core, and a valve rod capable of driving the valve core and partially exposed to the valve body. The upper end of the valve body is provided with a water inlet. Its characteristics are that it further comprises an upper valve sleeve and a lower valve sleeve, the upper valve sleeve is located above the lower valve sleeve and can be installed at the water outlet of the faucet, the top of the upper valve sleeve is provided with a water passing hole connected with the water inlet of the valve body, the lower valve sleeve can be linked with the valve rod, the lower valve sleeve has a large diameter section at the upper part and a small diameter section at the lower part, a radial wall is formed between the large diameter section and the small diameter section, a plurality of drainage holes are arranged on the radial wall in a circumferential direction, and a drainage port is arranged on the wall surface of the valve body to communicate with the valve cavity and the drainage hole. In the state after the valve core is opened, the water in the valve cavity can fall along the outer wall of the small diameter section through the drainage hole from the drainage port, so that the purpose of self-cleaning operation part is achieved, and the axial length of the large diameter section and the small diameter section is reasonably selected to meet the needs of different users.

[0005] The self-cleaning faucet control valve in the above patent still has some deficiencies. First, the control valve can only realize the on-off function of water flow, but cannot realize the switching use of cold water, hot water and cold-hot mixed water. Therefore, an additional cold-hot water control valve is needed to meet the use requirements, which increases the use cost of users. Second, during the self-cleaning process of the valve rod, if the water flow is large, the water flow will surge upward between the outer sleeve and the large diameter section of the lower valve sleeve, so that the outer wall surface of the outer sleeve is often in a wet state, increasing the health risk. SUMMARY

[0006] The first technical problem to be solved by the present application is to provide a self-cleaning faucet control valve capable of realizing the switching use of cold water, hot water and cold-hot mixed water in view of the status of the prior art.

[0007] The second technical problem to be solved by the present application is to provide a self-cleaning faucet control valve capable of effectively avoiding the excessive surge of water flow to wet other components during use in view of the status of the prior art.

[0008] The third technical problem to be solved by the present application is to provide a self-cleaning faucet applying the self-cleaning faucet control valve in view of the status of the prior art.

[0009] The technical scheme adopted by the present application to solve the first technical problem is as follows: a self-cleaning faucet control valve, comprising:

[0010] a valve body having a valve cavity with an open lower end and a water inlet at the upper end and communicating with the valve cavity;

[0011] A valve core assembly is arranged in a valve cavity of the valve body, comprising a valve sleeve and a valve core, the upper end of the valve sleeve is provided with a water passing hole opposite to the water inlet, the valve core is in the form of a rod as a whole and is rotatably arranged in the valve sleeve for controlling the water flow passing through the water passing hole, the lower end of the valve core is exposed outside the valve sleeve, the wall of the valve sleeve is provided with a water inlet, and the valve sleeve and the inner wall of the valve body define a water passing flow channel for connecting the water inlet and the lower end opening of the valve body.

[0012] A rotating sleeve is rotatably arranged at the bottom of the valve body and is connected with the lower end of the valve core, the rotating sleeve has an upper sleeve part which is open and can be arranged outside the valve body and a lower sleeve part which is open and has a smaller diameter than the upper sleeve part, a radial wall is formed between the upper and lower sleeve parts, a plurality of drainage holes are arranged on the radial wall in a circumferential direction, the drainage holes are connected with the water passing flow channel, and when the valve core is in an open state, the water entering the water passing flow channel falls along the outer wall of the lower sleeve part through the drainage holes.

[0013] The water inlet of the valve body comprises a first water inlet connected with the cold water channel of the faucet and a second water inlet connected with the hot water channel of the faucet, the water passing hole also has two, i.e. a first water passing hole opposite to the first water inlet and a second water passing hole opposite to the second water inlet, the upper end of the valve core has a notch part for water flow, at least part of the notch part can be opposite to at least one of the first water passing hole and the second water passing hole during rotation of the valve core so that the control valve is in a water passing state, and the notch part is arranged away from the first water passing hole and the second water passing hole so that the control valve is in a water cutting state.

[0014] In order to assemble and fix the valve core assembly in the valve body, the valve sleeve is in the form of a cylinder as a whole, the outer wall has a first step part which is large at the upper end and small at the lower end, a limiting stopper is threadedly connected to the inner wall of the lower end opening of the valve body, the limiting stopper is arranged outside the lower part of the valve sleeve and abuts against the first step part of the valve sleeve, so that the valve sleeve is pressed in the valve body, and the upper part of the valve sleeve and the inner wall of the valve body define the water passing flow channel.

[0015] In order to guide the water in the water passing flow channel to the lower opening of the valve body, the upper surface of the limiting stopper is provided with limiting protrusions arranged in a circumferential direction, the limiting protrusions abut against the first step part of the valve sleeve, so that a first flow gap is defined between the limiting stopper and the valve sleeve and is connected with the water passing flow channel.

[0016] In order to realize the assembly of the valve core, the valve sleeve and the rotating sleeve, and better control the rotation of the valve core through the rotating sleeve, the inner wall of the valve sleeve is formed into a stepped hole with a large upper part and a small lower part, the valve core is in a whole column shape and has a second stepped part with a large upper part and a small lower part on the outer wall, the valve core is arranged in the stepped hole, and the second stepped part is in abutment with the shoulder of the stepped hole, the rotating sleeve is internally provided with a baffle, the baffle is provided with a mounting hole in non-circular cooperation with the lower end of the valve core, and a fastener is arranged on the lower end of the valve core below the baffle to position the lower sleeve part on the valve core.

[0017] In order to realize the fixation of the valve sleeve relative to the valve body and avoid the rotation of the valve sleeve together with the valve core, the upper end of the valve sleeve is in abutment with the inner wall of the valve body, and one of the two is provided with a positioning protrusion, and the other is provided with a positioning hole for inserting the positioning protrusion.

[0018] In order to facilitate the assembly of the valve core and other components into the valve sleeve, the valve sleeve comprises a valve sleeve body with an open upper end and a valve cover connected to the upper end of the valve sleeve body in a buckle connection manner, the valve cover is provided with the first water passing hole and the second water passing hole, and the positioning protrusion is arranged on the valve cover.

[0019] In order to better realize the rotation cooperation with the valve core, the valve core assembly further comprises a valve sheet, the valve sheet is provided with a third water passing hole opposite to the first water passing hole and a fourth water passing hole opposite to the second water passing hole, an annular sealing member is arranged on the outer peripheral wall of the valve sheet, the annular sealing member is in contact with the inner wall of the valve sleeve, and the upper end of the valve core is in abutment with the valve sheet.

[0020] In order to integrally connect the control valve to the faucet, the upper end of the valve body is provided with an external thread part for being screwed with the water outlet of the faucet.

[0021] The technical scheme adopted by the present application to solve the second technical problem is that the inner wall of the radial wall of the rotating sleeve is further provided with a first annular wall extending upward, the height of the first annular wall is lower than the height of the upper sleeve part, and a first annular groove is formed between the inner wall of the upper sleeve part and the first annular wall, the bottom of the valve body is provided with a second annular groove extending vertically and having an open lower part, the first annular wall extends into the second annular groove of the valve body, so as to form a buffer flow channel therebetween, the drain holes are divided into two groups, namely the first drain holes located on the inner side of the first annular wall and the second drain holes located on the outer side of the first annular wall, and the first drain holes and the second drain holes are in communication through the buffer flow channel.

[0022] In the preferred embodiment, the first drainage holes located inside the first annular wall have multiple groups arranged radially in sequence along the radial wall, and after the rotating sleeve is assembled with the valve body and the valve core assembly, a foaming cavity is formed in the space above the radial wall of the rotating sleeve, when water flows through the valve core assembly and flows into the foaming cavity, the water is fully impacted, and then dispersed through the multiple groups of first drainage holes to form a moderate foaming water flow out of the foaming cavity, which can more comprehensively and fully wash the outer wall of the lower sleeve part of the rotating sleeve. In addition, during the process of water flowing out through the above-mentioned multiple groups of first drainage holes, bubbles are also generated when any two adjacent streams collide with each other, achieving the effect of full foaming. With this structure, the dedicated foamer component does not need to be additionally provided, and the foaming function can be achieved, saving material cost and assembly cost.

[0023] The structure design of the above-mentioned buffer flow channel effectively avoids excessive water flow from the upper edge of the upper sleeve part to wet the outer wall surface of the upper sleeve part during use, and the user can operate the upper sleeve part of the rotating sleeve (which can be used as a dry switch because it will not be wet) and the lower sleeve part of the rotating sleeve (which can be used as a wet switch because it can be cleaned) during actual operation. On this basis, a gap is formed between the inner wall of the upper sleeve part of the rotating sleeve and the outer wall of the lower part of the valve body, which is connected to the buffer flow channel, and external air can enter the control valve through the gap, so that the water flow can be more fully foamed.

[0024] Because the connection position of the lower sleeve part of the rotating sleeve and the radial wall is at the middle position of the area of the first drainage holes on the radial wall, the outer peripheral wall of the lower sleeve part of the rotating sleeve can be fully washed during water outlet, achieving a good effect of complete cleaning, and changing the complex structure of the original control valve outer layer washing and inner layer water passing structure and the additional assembly of the foaming device.

[0025] The technical scheme adopted by the present application to solve the third technical problem is: a self-cleaning faucet, comprising a faucet body having a mounting end and a water outlet, a cold water channel and a hot water channel extending from the mounting end to the water outlet are arranged in the faucet body, and a self-cleaning faucet control valve is arranged in the faucet body, the valve body of the control valve is connected with the water outlet of the faucet body, the cold water channel is communicated with a first water inlet of the valve body, and the hot water channel is communicated with a second water inlet of the valve body.

[0026] Compared with the prior art, the advantages of the present application are:

[0027] 1. The water inlet of the self-cleaning faucet control valve includes a first water inlet and a second water inlet, wherein the first water inlet can be connected with the cold water channel of the faucet, the second water inlet can be connected with the hot water channel of the faucet, the water passing hole of the valve sleeve also has two corresponding ones, that is, the first water passing hole opposite to the first water inlet and the second water passing hole opposite to the second water inlet, the user rotates the rotating sleeve, which can drive the valve core to rotate, at least part of the notch part of the valve core can be opposite to at least one of the first water passing hole and the second water passing hole during the rotation of the valve core, so that the control valve is in the water passing state and the first water passing hole and the second water passing hole are all misaligned to make the control valve in the water cutting state, that is, the cold water, hot water and cold-hot mixed water switching use can be realized, the user's use experience is improved, and the outer wall of the lower sleeve part of the rotating sleeve can be cleaned comprehensively during use, so that the user's water is cleaner and more sanitary.

[0028] 2. The installation mode of the original faucet and the cold-hot water switching valve is changed, the control valve is directly installed at the water outlet of the faucet or integrally connected with the water outlet of the faucet, and the cold-hot water mixing is realized at the water outlet of the faucet, which is convenient to install and saves a lot of faucet resources.

[0029] 3. The control valve is directly installed at the water outlet of the faucet, which also effectively shortens the distance between the original water outlet of the faucet and the water flow switch, so that the user can use water immediately and the user experience is improved. Especially after the user finishes using water, the control valve at the water outlet of the faucet can be directly operated to be closed immediately, compared with the switch in the prior art which is operated at a position far away from the water outlet of the faucet, the waste of water flow is avoided, and the purpose of water saving is achieved.

[0030] 4. The control valve does not need to additionally add a special bubbler part, and the bubbling function can be achieved through its own structure, which saves material cost and assembly cost. The multiple groups of first drain holes on the rotating sleeve of the control valve can disperse the water flow to form a moderate foaming water flow out of the foaming cavity, which can comprehensively flush the outer wall of the lower sleeve part of the rotating sleeve and improve the comfort experience of the user's sanitary water use. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a schematic diagram of the three-dimensional structure of the control valve in embodiment 1 of the application;

[0032] Figure 2 It is a schematic diagram of the three-dimensional structure of the control valve in embodiment 1 of the application from another angle;

[0033] Figure 3 It is a vertical sectional view of the control valve in embodiment 1 of the application;

[0034] Figure 4An exploded view of the control valve in Embodiment 1 of the present application;

[0035] Figure 5 An exploded view of the valve core assembly of the control valve in Embodiment 1 of the present application;

[0036] Figure 6 A structural schematic view of the faucet body in Embodiment 1 of the present application;

[0037] Figure 7 A perspective structural schematic view of the rotating sleeve of the control valve in Embodiment 2 of the present application;

[0038] Figure 8 A perspective sectional view of the rotating sleeve of the control valve in Embodiment 2 of the present application. DETAILED DESCRIPTION

[0039] The present application will be further described in conjunction with the embodiments with reference to the accompanying drawings.

[0040] In the specification and claims of the present application, directional terms are used, such as "front", "back", "up", "down", "left", "right", "side", "top", "bottom", etc., to describe various example structural parts and elements of the present application, but these terms are used only for the convenience of description and are determined based on the example orientation shown in the drawings. Since the disclosed embodiments of the present application can be arranged in different directions, these directional terms are only for illustration and should not be considered as limiting, such as "up" and "down" are not necessarily limited to the direction opposite or consistent with the direction of gravity.

[0041] Embodiment 1

[0042] Referring to Figures 1-5 , the self-cleaning faucet control valve includes a valve body 10, a valve core assembly 2, and a rotating sleeve 50, the valve core assembly 2 is arranged in the valve body 10, and specifically includes a valve sleeve 20 and a valve core 24 and a valve sheet 25 arranged in the valve sleeve 20.

[0043] Referring to Figure 4 , the valve body 10 is a cylindrical structure, and a valve cavity 100 with an open lower end is formed in the hollow interior of the valve body 10, and the valve core assembly 2 is arranged in the valve cavity 100 of the valve body 10. The upper end of the valve body 10 has a water inlet port in communication with the valve cavity 100, and the water inlet port has two, which are a first water inlet port 11a and a second water inlet port 11b. The upper part of the valve body 10 also has an external thread part 14 for mounting at the water outlet of the faucet, wherein the faucet has a hot water channel (specifically a hot water pipe) for hot water outflow and a cold water channel (specifically a cold water pipe) for cold water outflow, and the cold water channel can be connected with the first water inlet port 11a, and the hot water channel can be connected with the second water inlet port 11b.

[0044] Referring toFigure 5 The valve sleeve 20 of the valve core assembly 2 comprises a valve sleeve body 21 with an open upper end and a valve cover 22 connected to the upper end of the valve sleeve body 21 in a snap 222 connection. Specifically, the outer periphery of the valve cover 22 has a snap 222, and the open upper end of the valve sleeve body 21 has a snap hole 214 for snap connection with the snap 222. After the valve cover 22 is opened, the valve core 24, valve disc 25 and other components can be conveniently assembled into the valve sleeve body 21.

[0045] After the valve core assembly 2 is assembled into the valve body 10, the upper end of the valve sleeve 20 (i.e. the valve cover 22) abuts against the upper part of the inner wall of the valve body 10. Specifically, in order to avoid the valve sleeve 20 rotating in the circumferential direction (when the valve core 24 rotates), the outer wall surface of the valve cover 22 has two upwardly extending positioning protrusions 221, and correspondingly, the inner wall of the valve body 10 has two positioning holes 12 for the positioning protrusions 221 to be inserted into. In order to ensure the stability of the valve core assembly 2 in the valve body 10 and avoid the problem of shaking, the positioning protrusions 221 are two, and the positioning holes 12 on the inner wall of the valve body 10 are also two.

[0046] The valve cover 22 also has a first water passing hole 220a opposite the first water inlet 11a of the valve body 10 and a second water passing hole 220b opposite the second water inlet 11b of the valve body 10.

[0047] The valve sleeve body 21 is also generally cylindrical, and the outer wall of the valve sleeve body 21 has a first stepped portion 211 that is large at the top and small at the bottom. Correspondingly, the inner wall of the valve sleeve body 21 has a stepped hole 212 that is large at the top and small at the bottom, and the stepped hole 212 has a shoulder. The valve core 24 is generally cylindrical, and the outer wall of the valve core 24 has a second stepped portion 241 that is large at the top and small at the bottom. The valve core 24 is arranged in the stepped hole 212 of the valve sleeve body 21, and the second stepped portion 241 abuts against the shoulder of the stepped hole 212. After the valve core 24 is assembled in place, the lower end of the valve core 24 protrudes out of the lower end of the valve sleeve body 21 and is connected to the rotating sleeve 50 by a fastener 43 (the specific connection structure is described below).

[0048] The peripheral wall of the valve sleeve body 21 has water passing holes 213 arranged in the circumferential direction in sequence and at intervals. The water passing holes 213 are opposite to the notch portion 240 of the upper part of the valve core 24. The notch portion 240 of the valve core 24 is described in detail below.

[0049] Referring to Figure 3In order to assemble the valve core assembly 2 into the valve body 10, a limit stop 40 is threadedly connected to the inner wall of the lower end opening of the valve body 10, the limit stop 40 has a through hole in the middle portion, the limit stop 40 is sleeved on the lower portion of the valve sleeve 20 and abuts against the first step portion 211 of the valve sleeve 20, so that the valve sleeve 20 is pressed against the valve body 10. The upper portion (i.e. the large diameter portion) of the valve sleeve body 21 has a gap with the inner wall of the valve body 10, and the annular gap forms a water flow passage 30 for water flow.

[0050] In order to lead the water in the water flow passage 30 out of the lower opening of the valve body 10, the upper surface of the limit stop 40 has limit protrusions 41 arranged in a circumferential direction, the limit protrusions 41 abut against the bottom surface of the first step portion 211 of the valve sleeve body 21, so that a first flow gap 421 is defined between the limit stop 40 and the bottom surface of the valve sleeve body 21 and communicates with the water flow passage 30. The inner wall of the through hole of the limit stop 40 and the lower portion of the valve sleeve 20 form a second flow gap 422, preferably, the outer peripheral wall of the lower portion of the valve sleeve 20 has water flow grooves 420 extending longitudinally and arranged in a circumferential direction, and the water flow grooves 420 collectively constitute the second flow gap 422 which communicates with the first flow gap 421. The water in the valve sleeve 20 can enter the lower port of the valve body 10 through the water outlet 213, the water flow passage 30, the first flow gap 421 and the second flow gap 422 in sequence.

[0051] A foaming cavity 400 is formed in the space above the radial wall of the rotating sleeve 50, and the foaming cavity 400 communicates with the external air. Specifically, the inner wall of the upper sleeve portion 51 of the rotating sleeve 50 and the outer wall of the lower portion of the valve body 10 further form a gap 80 (see Figure 3 ) which communicates with the buffer flow passage 57 (to be described below), and the gap 80 can allow the external air to enter the foaming cavity 400, so that the water flow can be more fully foamed.

[0052] The second flow gap 422 described above is opposite to and communicates with the foaming cavity 400, and when the water flow passes through the water flow grooves 420 constituting the second flow gap 422, the water flow enters the foaming cavity 400 in a jetting manner and collides with each other, and since the foaming cavity 400 communicates with the external air, the water flow can be fully foamed to form foamed mist water.

[0053] Referring to Figure 3In order to better realize the rotation cooperation with the valve core 24, the valve disc 25 is arranged in the valve sleeve body 21 and abuts against the upper portion of the valve core 24, and the valve disc 25 is provided with a third water passing hole 251 opposite to the first water passing hole 220a of the valve cover 22 and a fourth water passing hole 252 opposite to the second water passing hole 220b of the valve cover 22. The outer circumferential wall of the valve disc 25 is sleeved with the annular sealing member 26, and after the valve disc 25 and the annular sealing member 26 are assembled into the valve sleeve body 21, the annular sealing member 26 is in contact with the inner wall of the valve sleeve 20, so that the valve disc 25 cannot rotate with the valve core 24 during the rotation adjustment of the valve core 24.

[0054] The diameter of the upper end of the valve core 24 is matched with the valve disc 25, and the upper end is provided with a longitudinally extending notch portion 240, and the cross section of the notch portion 240 is substantially triangular. During the rotation of the valve core 24, at least part of the notch portion 240 can be opposite to at least one of the first water passing hole 220a and the second water passing hole 220b to make the control valve in the water passing state, and the notch portion 240 can be opposite to both of the first water passing hole 220a and the second water passing hole 220b to make the control valve in the water cutting state.

[0055] That is, the shape and size of the notch portion 240 of the valve core 24 can be reasonably designed, so that during the rotation of the valve core 24, the notch portion 240 of the valve core 24 can be opposite to the first water passing hole 220a of the valve cover 22 (that is, opposite to the third water passing hole 251 of the valve disc 25), and the water passing state is cold water flowing out; or the notch portion 240 of the valve core 24 can be opposite to the second water passing hole 220b of the valve cover 22 (that is, opposite to the fourth water passing hole 252 of the valve disc 25), and the water passing state is hot water flowing out; of course, the notch portion 240 of the valve core 24 can also be opposite to both of the first water passing hole 220a and the second water passing hole 220b of the valve cover 22 to realize the purpose of passing cold and hot mixed water, and of course, in this state, the rotation fine adjustment of the valve core 24 can adjust the flow of cold water and hot water, and further realize the temperature adjustment of the cold and hot mixed water.

[0056] The rotation sleeve 50 (specifically the lower sleeve portion 52 of the rotation sleeve 50) is an operation component for the user to rotate and adjust the valve core 24, and is rotatably arranged at the bottom of the valve body 10 and connected with the lower end of the valve core 24. Specifically, the rotation sleeve 50 of the embodiment has an upper sleeve portion 51 which is open at the upper portion and can be sleeved outside the valve body 10, and a lower sleeve portion 52 which is open at the lower portion and has a smaller diameter than the upper sleeve portion 51, wherein a radial wall 53 is formed between the upper sleeve portion 51 and the lower sleeve portion 52, a plurality of water draining holes are formed on the radial wall 53 and are distributed along the circumferential direction, the water draining holes are opposite to the lower open portion of the valve body 10, and after the water flows out from the lower open portion of the valve body 10, the water can flow out through the water draining holes and fall along the outer wall surface of the lower sleeve portion 52 to wash the outer wall surface of the lower sleeve portion 52 of the rotation sleeve 50, thereby realizing self-cleaning.

[0057] The rotating sleeve 50 is provided with a blocking wall 55, and the blocking wall 55 is provided with a mounting hole 550 which is non-circularly matched with the lower end of the valve core 24. The lower end of the valve core 24 is provided with a fastener 43 which is used to position the lower sleeve part 52 on the valve core 24. The user rotates the rotating sleeve 50 to drive the valve core 24 to rotate, thereby adjusting and realizing the switching of cold water, hot water and mixed water.

[0058] The inner wall of the radial wall 53 of the rotating sleeve 50 is further provided with a first annular wall 54 which extends upwards. Specifically, the height of the first annular wall 54 is lower than the height of the upper sleeve part 51. The gap between the first annular wall 54 and the inner wall of the upper sleeve part 51 forms a first annular groove 56. The bottom of the wall of the valve body 10 is provided with a second annular groove 13 which vertically extends and has an open lower part. The bottom of the wall of the valve body 10 which corresponds to the part outside the second annular groove 13 forms a second annular wall 15. After the rotating sleeve 50 is installed in place, the first annular wall 54 of the rotating sleeve 50 extends into the second annular groove 13 of the valve body 10, and the second annular wall 15 of the valve body 10 extends into the first annular groove 56. Thus, a buffer flow channel 57 is formed between the valve body 10 and the rotating sleeve 50, in which water flows from inside to outside and upwardly and downwardly.

[0059] In order to ensure that a gap is reserved between the rotating sleeve 50 and the valve body 10 as the buffer flow channel 57, the inner wall surface of the first annular wall 54 of the rotating sleeve 50 is provided with a support block 541 which protrudes radially inwardly. The internal space surrounded by the first annular wall 54 is provided with a support ring 60. The bottom of the support ring 60 is provided with a notch which is matched with the support block 541. After the support ring 60 is assembled in place (after the rotating sleeve 50 is fixed by the fastener 43 at the lower end of the valve core 24), the support block 541 of the rotating sleeve 50 is clamped into the notch of the support ring 60, and the upper part of the support ring 60 abuts against the edge of the bottom of the wall of the valve body 10. The outer wall diameter of the support ring 60 is smaller than the inner diameter size of the first annular wall 54, so that a gap is also reserved between the outer wall of the first annular wall 54 and the outer wall of the support ring 60.

[0060] The rotating sleeve 50 of the embodiment is provided with two groups of water drainage holes, i.e. first water drainage holes 53a which are located on the inner side of the first annular wall 54 and second water drainage holes 53b which are located on the outer side of the first annular wall 54. The first water drainage holes 53a and the second water drainage holes 53b are sequentially arranged along the circumference of the rotating sleeve 50. Specifically, the first water drainage holes 53a and the second water drainage holes 53b are communicated with the buffer flow channel 57. The arrangement of the buffer flow channel 57 plays a certain buffering role, and to some extent, avoids the water flow from gushing upwardly along the gap between the upper sleeve part 51 of the rotating sleeve 50 and the valve body 10 when the water flow is large, so that the outer wall surface of the upper sleeve part 51 of the rotating sleeve 50 is not always in a wet state, and the sanitary hidden danger is eliminated.

[0061] The specific path of the water flow is shown in the following figure. Figure 3As shown by the dashed arrows in the figure, after the valve core 24 is rotated to open, the water in the cold water channel or the hot water channel of the faucet can enter the valve sleeve 20 through the first water inlet 11a or the second water inlet 11b of the valve body 10, the first water passing hole 220a or the second water passing hole 220b of the valve sleeve 20, the third water passing hole 251 or the fourth water passing hole 252 on the valve sheet 25, and the notch part 240 of the valve core 24 in sequence, and then enter the water passing flow channel 30 formed between the valve sleeve 20 and the inner wall of the valve body 10 through the water passing hole 213 on the peripheral wall of the valve sleeve 20, and then flow into the foaming cavity 400 at the lower open position of the valve body 10 through the flow gap between the limiting baffle 40 and the valve sleeve 20, wherein part of the water flow after sufficient foaming will be discharged through the first drain hole 53a, flush the outer wall of the lower sleeve part 52 of the rotating sleeve 50, and be used by the user, and the other part of the water flow will flow along the buffer flow channel 57 and be discharged through the second drain hole 53b, which is also used to flush the outer wall of the lower sleeve part 52 of the rotating sleeve 50 and be used by the user.

[0062] Referring to Figure 6 The embodiment also relates to a self-cleaning faucet, which comprises a faucet body 7 having a mounting end and a water outlet 70 and the control valve described above, the faucet body 7 is provided with a cold water channel 71 and a hot water channel 72 extending from the mounting end to the water outlet 70, the valve body 10 of the control valve can be connected at the water outlet 70 of the faucet body 7 through screw threads, the cold water channel 71 is in communication with the first water inlet 11a of the valve body 10 of the control valve, and the hot water channel 72 is in communication with the second water inlet 11b of the valve body. In another embodiment, the valve body 10 of the control valve and the faucet body 7 can also be an integral piece.

[0063] The self-cleaning faucet control valve of the embodiment integrates cold and hot switch adjustment, foaming water saving and overall self-cleaning, and can be used for water outlet control in public places and is also suitable for household use, so that the user can select dry or wet switch operation according to actual conditions, and good foaming effect improves the user's comfortable water use experience.

[0064] The self-cleaning faucet control valve and the faucet of the embodiment have the following advantages:

[0065] 1. The cold and hot water pipes are directly designed in an integral manner with the faucet body, material is saved, space is reduced, and installation is more convenient.

[0066] 2. The problem that a large amount of water is wasted before and after each hand washing due to the fact that the switch operation is different from hand washing in the prior art is avoided, the control valve is arranged at the water outlet of the faucet body, and the faucet can be used immediately after being turned on, so that a large amount of water resources is saved during long-term use.

[0067] 3. Cold and hot switch adjustment is realized at the water outlet, and water use comfort is improved.

[0068] 4. Due to its rational internal structural design, the control valve allows water to be dispersed by spraying and then converged through multi-hole diversion during the water flow process, achieving a gentle foaming and splash-free water flow. Furthermore, because the lower part of the operating sleeve (i.e., the operating handle) is located in the middle of the water outlet, the outer perimeter of the lower sleeve can be thoroughly rinsed during handwashing. This integrates multiple functions such as foaming and water saving, self-rinsing, and switching, while also saving costs. Faucets using this control valve are suitable not only for public places but also for homes, improving the effectiveness of preventing cross-infection.

[0069] 5. The control valve can also adjust the flow rate in distinct increments, allowing users to select the appropriate flow rate as needed.

[0070] 6. The control valve integrates water-saving foaming flushing switch in one place, achieving the ideal effect of safe and water-saving operation.

[0071] Example 2

[0072] See Figure 7 and Figure 8 The difference between this embodiment and embodiment 1 is that the distribution of the drain holes on the radial wall 53 of the rotating sleeve 50 is different. The first drain hole 53a located inside the first annular wall 54 has multiple sets arranged in sequence along the radial direction of the radial wall 53. Thus, during the process of water flowing out through the above-mentioned multiple sets of first drain holes 53a, any two adjacent streams collide with each other to generate bubbles, achieving the effect of a bubbler.

[0073] The multiple sets of first drainage holes 53a on the rotating sleeve 50 can achieve the foaming function without the need for additional dedicated foaming components, thus saving material and assembly costs.

Claims

1. A self-cleaning faucet control valve, comprising: a valve body (10) having a valve cavity (100) with an open lower end and a water inlet (11a; 11b) at an upper end and communicating with the valve cavity (100); a valve core assembly (2) disposed in the valve cavity (100) of the valve body (10) and including a valve sleeve (20) having a water passage hole (220a; 220b) at an upper end thereof opposite the water inlet (11a; 11b), and a valve core (24) in the form of a rod as a whole and rotatably disposed in the valve sleeve (20) for controlling the water flow on and off at the water passage hole (220a; 220b), the lower end of the valve core (24) being exposed outside the valve sleeve (20), the valve sleeve (20) having a water passage (213) formed in a wall thereof, and the valve sleeve (20) and the inner wall of the valve body (10) defining a water passage channel (30) for communicating the water passage (213) with the open lower end of the valve body (10); a rotating sleeve (50) rotatably disposed at the bottom of the valve body (10) and linked with the lower end of the valve core (24), the rotating sleeve (50) having an upper sleeve portion (51) open at an upper portion thereof and capable of being sleeved outside the valve body (10), and a lower sleeve portion (52) open at a lower portion thereof and having a smaller diameter than the upper sleeve portion (51), a radial wall (53) being formed between the upper and lower sleeve portions (52), a plurality of water discharge holes (53a; 53b) being formed in the radial wall (53) and spaced apart in a circumferential direction, the water discharge holes (53a; 53b) communicating with the water passage channel (30), and when the valve core (24) is in an open state, water entering the water passage channel (30) falls along the outer wall surface of the lower sleeve portion (52) through the water discharge holes (53a; 53b); characterized in that the water inlet (11a; 11b) of the valve body (10) includes a first water inlet (11a) for connecting with a cold water channel of the faucet and a second water inlet (11b) for connecting with a hot water channel of the faucet, the water passage holes (220a; 220b) also have two, i.e. a first water passage hole (220a) opposite the first water inlet (11a) and a second water passage hole (220b) opposite the second water inlet (11b), the upper end of the valve core (24) has a gap portion (240) for water flow, at least part of the gap portion (240) can be opposite at least one of the first water passage hole (220a) and the second water passage hole (220b) during rotation of the valve core (24) so as to make the control valve in a water passing state, and the gap portion (240) is arranged to be misaligned with the first water passage hole (220a) and the second water passage hole (220b) so as to make the control valve in a water off state. The inner wall of the radial wall (53) of the rotating sleeve (50) further has a first annular wall (54) extending upward, the height of the first annular wall (54) being lower than the height of the upper sleeve part (51), and a first annular groove (56) being formed between the inner wall of the upper sleeve part (51) and the first annular wall (54), the bottom of the valve body (10) having a second annular groove (13) extending vertically and open at the lower part, the first annular wall (54) extending into the second annular groove (13) of the valve body (10) to form a buffer flow channel therebetween, a foaming cavity being formed in the space above the radial wall of the rotating sleeve after the rotating sleeve, the valve body and the valve core assembly are assembled in place, a gap being further formed between the inner wall of the upper sleeve part of the rotating sleeve and the outer wall of the lower part of the valve body, the gap being in communication with the buffer flow channel and allowing external air to enter the control valve, the drain holes (53a; 53b) being provided in two groups, i.e. the first drain holes (53a) on the inner side of the first annular wall (54) and the second drain holes (53b) on the outer side of the first annular wall (54), the first drain holes (53a) being in communication with the second drain holes (53b) through the buffer flow channel.

2. The self-cleaning faucet control valve of claim 1, wherein: The valve sleeve (20) is in the form of a cylinder as a whole, and the outer wall has a first step part (211) which is large at the upper part and small at the lower part, the inner wall of the lower end of the valve body (10) is further threadedly connected with a limiting baffle (40), the limiting baffle (40) is sleeved outside the lower part of the valve sleeve (20) and abuts against the first step part (211) of the valve sleeve (20), so that the valve sleeve (20) is pressed against the valve body (10), and the upper part of the valve sleeve (20) and the inner wall of the valve body (10) define the water flow channel (30).

3. The self-cleaning faucet control valve of claim 2, wherein: The upper surface of the limiting baffle (40) is provided with limiting protrusions (41) which are arranged at intervals in the circumferential direction, the limiting protrusions (41) abut against the first step part (211) of the valve sleeve (20), so that the limiting baffle (40) and the valve sleeve (20) define a first flow gap (421) which is in communication with the water flow channel (30).

4. The self-cleaning faucet control valve of claim 1, wherein: The inner wall of the valve sleeve (20) forms a step hole (212) which is large at the upper part and small at the lower part, the valve core (24) is in the form of a column as a whole, and the outer wall has a second step part (241) which is large at the upper part and small at the lower part, the valve core (24) is sleeved in the step hole (212), and the second step part (241) abuts against the shoulder of the step hole (212), the rotating sleeve (50) is provided with a baffle wall (55), the baffle wall (55) is provided with a mounting hole (550) which is non-circularly matched with the lower end of the valve core (24), and the lower end of the valve core (24) below the baffle wall (55) is provided with a fastener (43) for positioning the lower sleeve part (52) on the valve core (24).

5. The self-cleaning faucet control valve of claim 1, wherein: The upper end of the valve sleeve (20) abuts against the inner wall of the valve body (10), and one of them is provided with a positioning protrusion (221), and the other is provided with a positioning hole (12) in which the positioning protrusion (221) is inserted.

6. The self-cleaning faucet control valve of claim 5, wherein: The valve sleeve (20) comprises a valve sleeve (20) body with an open upper end and a valve cover (22) connected to the upper end of the valve sleeve (20) body in a snap (222) connection manner, the valve cover (22) is provided with the first water passing hole (220a) and the second water passing hole (220b), and the positioning convex column (221) is arranged on the valve cover (22).

7. The self-cleaning faucet control valve of claim 1, wherein: The valve core assembly (2) further comprises a valve piece (25), the valve piece (25) is provided with a third water passing hole (251) opposite to the first water passing hole (220a) and a fourth water passing hole (252) opposite to the second water passing hole (220b), an annular sealing member (26) is sleeved on the outer peripheral wall of the valve piece (25), the annular sealing member (26) is in contact with the inner wall of the valve sleeve (20), and the upper end of the valve core (24) is in abutment with the valve piece (25).

8. The self-cleaning faucet control valve of claim 1, wherein: The upper end of the valve body (10) is provided with an outer threaded part (14) for being screwed with the water outlet of the faucet.

9. A self-cleaning faucet comprising a faucet body (7) having a mounting end and a water outlet (70), characterized in that: The faucet body (7) is provided with a cold water channel (71) and a hot water channel (72) extending from the installation end to the water outlet (70) and the self-cleaning faucet control valve according to any one of claims 1-8, the valve body (10) is connected with the water outlet (70) of the faucet body (7), the cold water channel (71) is in communication with the first water inlet (11a) of the valve body (10), and the hot water channel (72) is in communication with the second water inlet (11b) of the valve body (10).

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