Valve element and faucet

Abstract

The utility model discloses a valve core, which belongs to the technical field of kitchen and bath sanitary fittings, and is characterized in that the valve core comprises a shell, a fixed ceramic chip, a movable ceramic chip and a valve rod, the shell is provided with an inner cavity and a mounting hole which are communicated, the fixed ceramic chip is circumferentially limited in the inner cavity, and the fixed ceramic chip is provided with a water inlet runner I, a water inlet runner II and a water outlet runner; the movable ceramic chip and the valve rod are both arranged in the inner cavity, the movable ceramic chip and the fixed ceramic chip are stacked, the valve rod is connected with the movable ceramic chip, and the valve rod can drive the movable ceramic chip to rotate, so that the communication area of the first water inlet runner, the second water inlet runner and the water outlet runner is controlled; the outer end of the valve rod extends out of the mounting hole, a receding hole is formed in the valve rod, the receding hole penetrates through the fixed ceramic chip and the movable ceramic chip, and the water outlet pipe or the drawing pipe can penetrate through the receding hole. The valve element can be arranged on the side edge of the water faucet like the prior art and can also be arranged in the water faucet, the application range is wider, and the original size of the water faucet cannot be affected. The utility model further discloses a faucet.

Description

Technical Field

[0001] The utility model belongs to the technical field of kitchen and bathroom sanitary ware, and particularly relates to a valve core and a faucet. Background Art

[0002] Faucets are common equipment in kitchens and bathrooms. The main functions of faucets include controlling water flow and water pressure, adjusting water temperature, and preventing water waste. By rotating the faucet handle, users can easily adjust the size, strength, and speed of the water flow, as well as choose cold or hot water to meet the needs of different scenarios.

[0003] The Chinese patent with publication number CN216812975U discloses a split faucet, including a faucet body, a valve seat, a connector and a branch pipe. The faucet body has a cavity, and the side wall of the faucet body has a mounting hole connected to the cavity. The valve seat is axially limited in the mounting hole, and the outer end of the valve seat extends out of the mounting hole; the connector connects the branch pipe with the valve seat. A valve core and a pressure cap are arranged in the branch pipe, the valve seat is adapted to the valve core, the pressure cap is connected to the branch pipe and presses the valve core onto the valve seat, the valve seat has a water inlet interface and a water outlet interface connected to the valve core, and the valve core is used to control the on and off of the water inlet interface and the water outlet interface; the outer side of the valve core is connected to a hand wheel for controlling the opening and closing of the valve core. The faucet body is provided with a storage channel connected to the cavity, and a rollable and bendable pull-out tube is arranged in the storage channel. The length of the pull-out tube is longer than the length of the storage channel, and the pull-out tube can slide in the storage channel. The inner end of the pull-out tube is connected to the water outlet interface, and the outer end of the pull-out tube is provided with a nozzle, which is located on the outside of the storage channel. The nozzle is connected to the inside of the pull-out tube and supplies water for discharge.

[0004] The above technical solution has the following defects: the above faucet is essentially a pull-out faucet, and the opening of the valve core is controlled by a handwheel, thereby controlling the water output of the nozzle. However, in production, the structure of the above faucet is old and the spatial distribution is unreasonable, which makes it difficult to meet the increasingly abundant market demand, and its structure needs to be improved urgently. In particular, the handwheel and branch pipe are located on the side of the faucet body, occupying the lateral space of the faucet, which is not only complicated to produce and assemble, but also requires a large storage space, high transportation costs, and weak market competitiveness; in addition, due to the structure of the valve core, if the valve core is built into the faucet body, the overall volume of the faucet body will increase, and space for pipeline installation needs to be reserved in the faucet body, resulting in more materials used in the production of the faucet body, and the handwheel is also difficult to connect with the valve core, and the above valve core has a small scope of application. Utility Model Content

[0005] The purpose of the utility model is to propose a valve core in view of the above problems existing in the prior art. The first technical problem to be solved by the utility model is: how to improve the applicability of the valve core.

[0006] The purpose of the utility model is to propose a faucet in view of the above problems existing in the prior art. The second technical problem to be solved by the utility model is: how to improve the existing faucet to meet the new market demand.

[0007] The first technical purpose of the utility model can be achieved through the following technical solutions:

[0008] A valve core, the valve core comprises an outer shell, a fixed ceramic plate, a movable ceramic plate, and a valve stem, the outer shell has a connected inner cavity and a mounting hole, the fixed ceramic plate is circumferentially limited in the inner cavity, and the fixed ceramic plate is provided with a first water inlet channel, a second water inlet channel, and a water outlet channel; the movable ceramic plate and the valve stem are both arranged in the inner cavity, the movable ceramic plate and the fixed ceramic plate are placed overlapping, the valve stem is connected to the movable ceramic plate, the valve stem can drive the movable ceramic plate to rotate, thereby controlling the connecting area between the first water inlet channel, the second water inlet channel and the water outlet channel; the outer end of the valve stem extends out of the mounting hole, a clearance hole is opened on the valve stem, and the clearance hole passes through the fixed ceramic plate and the movable ceramic plate, and the clearance hole is for water flow, an outlet pipe or a pull-out pipe to pass through.

[0009] In the above-mentioned valve core, the relief hole is coaxially arranged with the valve stem.

[0010] In the above-mentioned valve core, the moving porcelain plate is provided with connecting hole one and connecting hole two at intervals, and the inner end of the valve stem has a water passage cavity connecting the connecting hole one and connecting hole two. After the moving porcelain plate is rotated, the connecting area between the connecting hole one and the water inlet channel one and / or the water inlet channel two, and the connecting area between the connecting hole two and the water outlet channel can be adjusted.

[0011] In the above-mentioned valve core, a base is provided at the opening of the inner cavity, and the base is penetrated by the water inlet channel 1, the water inlet channel 2, the water outlet channel, and the clearance hole; the base is provided with a clamping foot, and the fixed ceramic piece is provided with a clamping groove. After the clamping foot is connected to the clamping groove, the base limits the circumferential position of the fixed ceramic piece.

[0012] In the above-mentioned valve core, a hydroelectric power generation device is arranged in the said clearance hole.

[0013] In the valve core, a first limit block and a second limit block are arranged in the inner cavity at intervals, and a convex block is arranged on the valve stem, and the convex block can move between the first limit block and the second limit block.

[0014] In the above-mentioned valve core, a guide ring is provided on the hole wall of the mounting hole, and the inner wall of the guide ring abuts against the outer wall of the upper end of the valve stem.

[0015] The second technical purpose of the utility model can be achieved through the following technical solutions:

[0016] A faucet, comprising a base, a joint, a faucet body and the above-mentioned valve core, the base having an assembly cavity and a first water inlet hole, a second water inlet hole, a water outlet hole and a through hole connected to the assembly cavity, the valve core being arranged in the assembly cavity, the first water inlet hole being connected to the first water inlet channel, the second water inlet hole being connected to the second water inlet channel, the water outlet hole being connected to the water outlet channel, and the through hole being connected to the clearance hole; the joint connecting the base with the faucet body, a hand wheel being rotatably arranged outside the joint, the hand wheel being connected to the valve stem and being able to drive the valve stem to rotate; a pull-out tube being connected in the water outlet hole, the free end of the pull-out tube passing through the through hole, the clearance hole and the faucet body and then connected to a water spout.

[0017] In the above-mentioned faucet, a limiting groove is provided in the hand wheel, a pressure cap is provided at the outer end of the valve stem, a travel hole is provided on the side wall of the joint, a limiting rod is slidably provided in the travel hole, and the two ends of the limiting rod are respectively connected to the pressure cap and the limiting groove.

[0018] In the above-mentioned faucet, the hand wheel is coaxially arranged with the base, and the hand wheel is flush with the outer wall of the base.

[0019] In summary, the beneficial effects of the present invention compared with the prior art are as follows:

[0020] The clearance hole arranged on the valve core can allow the pull-out tube or the conventional water outlet pipe to pass through, so that the valve core can be set on the side of the faucet like the prior art, or the valve core can be built into the faucet, which has a wider range of applications and will not affect the original volume of the faucet; in addition, the valve stem is not affected by the clearance hole and can drive the moving porcelain to rotate normally, the original function of the valve core to adjust, open and close the faucet has not changed, the faucet can be coaxially distributed with the handwheel, and can meet the increasingly abundant market demand; there is no difficult-to-polish corner design on the faucet, and the technical solution with high production difficulty has been abandoned from the research and development stage, making processing easier. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the structure of the valve core in the embodiment;

[0022] Figure 2 for Figure 1 A cross-sectional schematic diagram of

[0023] Figure 3 is a schematic diagram of the bottom structure of the housing in the embodiment;

[0024] Figure 4 is a cross-sectional schematic diagram of a housing in an embodiment;

[0025] Figure 5 for Figure 1 Schematic diagram of the explosion structure;

[0026] Figure 6 It is a partial structural schematic diagram of the valve core;

[0027] Figure 7 It is a schematic diagram after the fixed ceramic piece and the moving ceramic piece are superimposed;

[0028] Figure 8 for Figure 7 One of the changing state diagrams (the direction of the arrow is the rotation direction of the moving ceramic piece);

[0029] Fig. 9 for Figure 7 The second diagram of the changing state (the direction of the arrow is the rotation direction of the moving ceramic piece);

[0030] Fig.10 This is a schematic diagram of the top structure of the base in the embodiment;

[0031] Fig.11 This is a schematic diagram of the external structure of a faucet in the embodiment;

[0032] Fig.12 for Fig.11 A cross-sectional schematic diagram of

[0033] Fig.13 for Fig.12 Schematic diagram of some structures;

[0034] Fig.14 It is a partial structural diagram of a faucet;

[0035] Fig.15 It is a cross-sectional schematic diagram of the base, joint and handwheel in the coordinated state.

[0036] Reference numerals: 100, housing; 110, inner cavity; 111, limit block 1; 112, limit block 2; 120, mounting hole; 121, guide ring;

[0037] 200, fixed ceramic piece; 210, water inlet channel 1; 220, water inlet channel 2; 230, water outlet channel; 240, card slot;

[0038] 300, moving ceramic piece; 310, connecting hole 1; 320, connecting hole 2;

[0039] 400, valve stem; 410, clearance hole; 420, water passage cavity; 430, convex block; 440, latching tooth; 450, pressure cap;

[0040] 500, base; 510, foot;

[0041] 600, base; 610, assembly cavity; 620, water inlet hole 1; 621, water supply pipe; 630, water inlet hole 2; 640, water outlet hole; 641, pulling tube; 642, water nozzle; 650, through hole;

[0042] 700, joint; 710, travel hole; 711, limit rod;

[0043] 800, faucet body;

[0044] 900, hand wheel; 910, limit slot. DETAILED DESCRIPTION

[0045] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0046] A valve core, such as Figures 1 to 9 As shown, the valve core includes a housing 100, a fixed ceramic piece 200, a movable ceramic piece 300 and a valve stem 400. The housing 100 has a connected inner cavity 110 and a mounting hole 120. The fixed ceramic piece 200 is circumferentially limited in the inner cavity 110. The fixed ceramic piece 200 has an inlet flow channel 1 210, an inlet flow channel 2 220, and an outlet flow channel 230. The movable ceramic piece 300 and the valve stem 400 are both arranged in the inner cavity 110, and the movable ceramic piece 300 and the fixed ceramic piece 200 are overlapped. The inner end of the valve stem 400 is clamped with the moving porcelain piece 300, and the valve stem 400 can drive the moving porcelain piece 300 to rotate, thereby controlling the connection area of ​​the water inlet channel 1 210, the water inlet channel 220 and the water outlet channel 230; the outer end of the valve stem 400 extends out of the mounting hole 120, and a clearance hole 410 is opened on the valve stem 400, and the clearance hole 410 passes through the fixed porcelain piece 200 and the moving porcelain piece 300, and the clearance hole 410 is for water flow, outlet pipe or pull-out pipe to pass through.

[0047] According to some embodiments, pipes are connected to both ends of the clearance hole 410, and the clearance hole 410 is used as a flow channel for water to flow through, thereby omitting the outlet pipe or the pull-out pipe; a hydroelectric power generation device is arranged in the clearance hole 410, and the hydroelectric power generation device is a prior art. For details, please refer to a hydroelectric power generation device (publication number: CN220395885U). Pipes are connected to the water inlet and outlet of the hydroelectric power generation device, respectively, so that the hydroelectric power generation device can be used as a connecting component without affecting the normal flow of water.

[0048] In this embodiment, the clearance hole 410 is coaxially arranged with the valve stem 400, and the water inlet channel 1 210, the water inlet channel 220, and the water outlet channel 230 are distributed on the outer ring of the fixed ceramic plate 200, thereby ensuring that the areas of the water inlet channel 1 210, the water inlet channel 220, and the water outlet channel 230 will not be reduced, and the rotation axis of the valve stem 400 coincides with the central axis of the clearance hole 410, so as to avoid interference with the outlet pipe or the pull-out pipe in the clearance hole 410 when the valve stem 400 rotates. As another solution, the clearance hole 410 can also be eccentrically arranged on the housing 100, as long as it does not affect the normal rotation of the valve stem 400.

[0049] like Figure 5-Figure 9 As shown, a connection hole 1 310 and a connection hole 2 320 are provided on the movable porcelain piece 300 at intervals, and an inner end of the valve stem 400 has a water passage cavity 420 connecting the connection hole 1 310 and the connection hole 2 320, that is, the water passage cavity 420 connects the connection hole 1 310 and the connection hole 2 320, and after the movable porcelain piece 300 is rotated, the connection area between the connection hole 1 310 and the water inlet channel 1 210 and / or the water inlet channel 220, and the connection area between the connection hole 2 320 and the water outlet channel 230 can be adjusted.

[0050] A base 500 is provided at the opening of the inner cavity 110. After the base 500 is clamped with the housing 100, the base 500 presses the fixed ceramic piece 200, the movable ceramic piece 300, and the valve stem 400 tightly against the inner cavity 110. The base 500 is penetrated by the water inlet channel 1 210, the water inlet channel 2 220, the water outlet channel 230, and the clearance hole 410; the base 500 has a clamping foot 510, and the fixed ceramic piece 200 is provided with a clamping groove 240. After the clamping foot 510 is connected with the clamping groove 240, the base 500 limits the circumferential position of the fixed ceramic piece 200. In some embodiments, a sealing ring is provided between the valve stem 400 and the movable ceramic piece 300.

[0051] like Figure 3-Figure 6 As shown, a limit block 111 and a limit block 112 are arranged in the inner cavity 110, and a protrusion 430 is arranged outside the valve stem 400. The protrusion 430 can move between the limit block 111 and the limit block 112 following the rotation of the valve stem 400. The limit block 111 and the limit block 112 cooperate to limit the moving stroke of the protrusion 430, thereby limiting the rotation stroke of the valve stem 400.

[0052] A guide ring 121 is provided on the hole wall of the mounting hole 120, and the inner wall of the guide ring 121 abuts against the outer wall of the upper end of the valve stem 400. The guide ring 121 guides when the valve stem 400 rotates, thereby ensuring the stability of the rotation of the valve stem 400; the outer end of the valve stem 400 has a latching tooth 440.

[0053] Working principle of a valve core:

[0054] Assume that the water inlet channel 1 210 is connected to a cold water pipe, the water inlet channel 220 is connected to a hot water pipe, and the water outlet channel 230 is connected to a water outlet pipe or a pull-out pipe.

[0055] like Figure 7 As shown, when the valve core is in a closed state, the movable ceramic plate 300 covers the water inlet channel 1 210, the water inlet channel 220, and the water outlet channel 230; the valve stem 400 is rotated, and the limit blocks 111 and 112 limit the rotation stroke of the valve stem 400, and the valve stem 400 drives the movable ceramic plate 300 to rotate, thereby changing the positions of the connecting hole 1 310 and the connecting hole 2 320, so that the connecting hole 1 310 can gradually connect to the water inlet channel 1 210 and / or the water inlet channel 2 220, and the connecting hole 2 320 can also gradually connect to the water outlet channel 230.

[0056] like Figure 8 As shown, when the connection hole 1 310 is only connected to the water inlet channel 1 210 and the water inlet channel 220 is covered by the passive tile 300, the connection hole 2 320 is also connected to the water outlet channel 230, and the cold water flows out from the water inlet channel 1 210, the connection hole 1 310, the water cavity 420, the connection hole 2 320, and the water outlet channel 230. When the connection hole 1 310 is fully connected to the water inlet channel 1 210, the water outflow of the cold water is the largest, and when the connection hole 1 310 is only connected to a small part of the water inlet channel 1 210, the water outflow of the cold water is the smallest.

[0057] When the first connection hole 310 is connected to the first water inlet channel 210 and the second water inlet channel 220 at the same time, cold water and hot water flow out from the first connection hole 310, the water passage cavity 420, the second connection hole 320, and the water outlet channel 230 and mix;

[0058] like Fig. 9 As shown, as the valve stem 400 rotates, when the connection hole 1 310 is only connected to the water inlet channel 220 and the water inlet channel 210 is covered by the passive ceramic plate 300, the connection hole 220 is connected to the water outlet channel 230, and hot water can flow out from the water inlet channel 220, the connection hole 1 310, the water cavity 420, the connection hole 2 320, and the water outlet channel 230. Figure 7 As shown, the valve core can be closed by rotating the valve stem 400 in the opposite direction.

[0059] In other words, the opening and closing of the valve core and the water outlet temperature and water outlet flow rate can be controlled by rotating the valve stem 400.

[0060] Depending on the faucet, the water outlet pipe or the pull-out pipe in the faucet can pass through the clearance hole 410, or the valve core can be placed horizontally without using the clearance hole 410, and the valve core can be used as a regular valve core.

[0061] A faucet, such as Figures 10 to 15As shown, the faucet includes a base 600, a joint 700, a faucet body 800 and the above-mentioned valve core. The base 600 has an assembly cavity 610, a water inlet hole 1 620, a water inlet hole 2 630, a water outlet hole 640, and a through hole 650. The water inlet hole 1 620, the water inlet hole 2 630, the water outlet hole 640, and the through hole 650 are all connected to the assembly cavity 610. The valve core is arranged in the assembly cavity 610, and the water inlet hole 1 620 corresponds to and is connected to the water inlet channel 1 210, the water inlet hole 2 630 corresponds to and is connected to the water inlet channel 220, and the water outlet hole 640 Corresponding to and connected with the water outlet channel 230, the through hole 650 is connected with the give-way hole 410; the joint 700 connects the base 600 with the faucet body 800, and a hand wheel 900 is rotatably arranged outside the joint 700, and the hand wheel 900 is connected with the valve stem 400 and can drive the valve stem 400 to rotate; a pull-out tube 641 is connected to the water outlet hole 640, and the free end of the pull-out tube 641 passes through the through hole 650, the give-way hole 410, and the faucet body 800 and is connected to a water nozzle 642; both the water inlet hole 1 620 and the water inlet hole 2 630 are connected with a water supply pipe 621.

[0062] In some embodiments, the hydroelectric power generation device is disposed in the through hole 650 and / or the clearance hole 410. The drawing pipe 641 may also be a conventional water outlet pipe, that is, a conventional pipe without a drawing function and only used for water outlet.

[0063] The lower end of the connector 700 presses the valve core into the assembly cavity 610, thereby limiting the axial position of the valve core; in some implementations, the valve core can also be limited by other components such as a limiting ring and a retaining spring.

[0064] like Figures 13 to 15 As shown, as a preference, the hand wheel 900 is coaxially arranged with the base 600, and the hand wheel 900 is flush with the outer wall of the base 600. The outer wall of the hand wheel 900 is also provided with a pattern to increase the friction between the user's hand and the hand wheel 900, or a handle is provided on the outer wall of the hand wheel 900 for the user's hand to grasp.

[0065] In some embodiments, the outer wall of the base 600 is in the shape of a truncated cone, a cylinder or a circle.

[0066] like Fig.13 , Fig.14As shown, a limit groove 910 is provided in the hand wheel 900, a pressure cap 450 is provided at the outer end of the valve stem 400 to be engaged with the latching teeth 440, a travel hole 710 is provided on the side wall of the joint 700, a limit rod 711 is slidably provided in the travel hole 710, and both ends of the limit rod 711 are respectively connected with the pressure cap 450 and the limit groove 910. During the process of the hand wheel 900 driving the limit rod 711, the pressure cap 450 and the valve stem 400 to rotate, the travel hole 710 is only for the limit rod 711 to rotate, and the limit block 1 111 and the limit block 2 112 limit the rotation stroke of the valve stem 400, so as to realize the rotation stroke limit of the limit rod 711. The limit rod 711 can be a screw or a latch; in some embodiments, the pressure cap 450 and the hand wheel 900 can also be directly connected through the limit rod 711, so as to omit the limit groove 910.

[0067] The working principle of a faucet:

[0068] Assuming that the water inlet hole 1 620 is connected to a cold water supply pipe and the water inlet hole 2 630 is connected to a hot water supply pipe, cold water can be supplied to the water inlet hole 1 620 and the water inlet channel 1 210 , and hot water can be supplied to the water inlet hole 2 630 and the water inlet channel 2 220 .

[0069] By turning the handwheel 900, the handwheel 900 drives the limit rod 711, the pressure cap 450, and the valve stem 400 to rotate as a whole, so that the water outlet temperature and the water outlet flow rate of the water nozzle 642 can be controlled through the valve core. The water nozzle 642 can be pulled out by pulling it outward, and the pull-out tube 641 slides in the through hole 650, the make-way hole 410, and the faucet body 800, and there will be no interference between the pull-out tube 641 and the valve core.

[0070] The specific embodiments described in this article are merely examples of the spirit of the utility model; technicians in the technical field to which the utility model belongs can make various modifications or additions to the described specific embodiments or replace them in a similar manner, but will not deviate from the spirit of the utility model or exceed the scope defined by the attached claims.

Claims

1. A valve core, characterized in that: The valve core comprises an outer shell (100), a fixed ceramic plate (200), a movable ceramic plate (300), and a valve stem (400); the outer shell (100) has an inner cavity (110) and a mounting hole (120) which are connected to each other; the fixed ceramic plate (200) is circumferentially limited in the inner cavity (110); the fixed ceramic plate (200) has a first water inlet flow channel (210), a second water inlet flow channel (220), and a water outlet flow channel (230); the movable ceramic plate (300) and the valve stem (400) are both arranged in the inner cavity (110); the movable ceramic plate (300) and the fixed ceramic plate (200) are stacked and placed The valve stem (400) is connected to the movable porcelain piece (300), and the valve stem (400) can drive the movable porcelain piece (300) to rotate, so as to control the connection area between the water inlet channel 1 (210), the water inlet channel 2 (220) and the water outlet channel (230); the outer end of the valve stem (400) extends out of the mounting hole (120), and a clearance hole (410) is provided on the valve stem (400), and the clearance hole (410) passes through the fixed porcelain piece (200) and the movable porcelain piece (300), and the clearance hole (410) is for water flow, water outlet pipe or pull-out pipe to pass through.

2. The valve core according to claim 1, characterized in that: The clearance hole (410) is coaxially arranged with the valve stem (400).

3. The valve core according to claim 1, characterized in that: The movable porcelain plate (300) is provided with a connection hole 1 (310) and a connection hole 2 (320) at intervals, and the inner end of the valve stem (400) has a water passage cavity (420) that is connected to the connection hole 1 (310) and the connection hole 2 (320). After the movable porcelain plate (300) is rotated, the connection area between the connection hole 1 (310) and the water inlet channel 1 (210) and / or the water inlet channel 2 (220), and the connection area between the connection hole 2 (320) and the water outlet channel (230) can be adjusted.

4. The valve core according to claim 1, characterized in that: A base (500) is provided at the opening of the inner cavity (110), and the base (500) is penetrated by the water inlet channel 1 (210), the water inlet channel 2 (220), the water outlet channel (230), and the clearance hole (410); the base (500) is provided with a clamping foot (510), and the fixed ceramic sheet (200) is provided with a clamping groove (240). After the clamping foot (510) is connected to the clamping groove (240), the base (500) limits the circumferential position of the fixed ceramic sheet (200).

5. The valve core according to any one of claims 1 to 4, characterized in that: A hydroelectric power generation device is arranged in the clearance hole (410).

6. The valve core according to claim 1, characterized in that: A limit block 1 (111) and a limit block 2 (112) are arranged in the inner cavity (110) at intervals, and a protrusion (430) is arranged on the valve stem (400), and the protrusion (430) can move between the limit block 1 (111) and the limit block 2 (112).

7. The valve core according to claim 1, characterized in that: A guide ring (121) is provided on the hole wall of the mounting hole (120), and the inner wall of the guide ring (121) abuts against the outer wall of the upper end of the valve stem (400).

8. A faucet, characterized in that: The faucet comprises a base (600), a joint (700), a faucet body (800) and a valve core according to any one of claims 1 to 7, wherein the base (600) has an assembly cavity (610) and a water inlet hole 1 (620), a water inlet hole 2 (630), a water outlet hole (640) and a through hole (650) connected to the assembly cavity (610), the valve core is arranged in the assembly cavity (610), the water inlet hole 1 (620) is connected to the water inlet channel 1 (210), the water inlet hole 2 (630) is connected to the water inlet channel 2 (220), and the water outlet hole (640) is connected to the through hole (650). The water outlet channel (230) is provided with a through hole (650) connected to the clearance hole (410); the joint (700) connects the base (600) with the faucet body (800); a hand wheel (900) is rotatably arranged outside the joint (700); the hand wheel (900) is connected to the valve stem (400) and can drive the valve stem (400) to rotate; a pull-out tube (641) is connected inside the water outlet hole (640); the free end of the pull-out tube (641) passes through the through hole (650), the clearance hole (410) and the faucet body (800) and is connected to a water nozzle (642).

9. The faucet according to claim 8, characterized in that: A limit groove (910) is provided in the hand wheel (900), a pressure cap (450) is provided at the outer end of the valve stem (400), a travel hole (710) is provided on the side wall of the joint (700), a limit rod (711) is slidably provided in the travel hole (710), and two ends of the limit rod (711) are respectively connected to the pressure cap (450) and the limit groove (910).

10. The faucet according to claim 8, characterized in that: The hand wheel (900) is coaxially arranged with the base (600), and the hand wheel (900) is flush with the outer wall of the base (600).

Images