Sealed leakproof faucet

Abstract

The utility model discloses a sealed leakproof faucet which comprises a faucet shell, the faucet shell comprises a hollow pipe body and a water outlet pipe which are communicated with each other, and the water outlet pipe is arranged on the side portion of the pipe wall of the hollow pipe body. The water passing valve seat is arranged in the hollow pipe body and abuts against an axial limiting part on the pipe wall of the hollow pipe body so as to be axially limited by a certain height in the hollow pipe body; the water control core is supported and mounted in the hollow main body through the water passing valve seat; according to the technical scheme, the structure is simple, disassembly and assembly are convenient, the valve element is communicated with the water outlet pipe to directly discharge water, the sealing rings are arranged on the peripheries of the water passing valve seat and the water control core respectively, and after the water control core is installed in the hollow pipe body, a closed drainage area surrounding the periphery of the water control core is formed between the two sealing rings. The drainage area can directly cover and communicate with a water inlet of the water outlet pipe on the side of the hollow pipe body, and a water control core does not need to be rotated for adjustment and alignment.

Description

Technical Field

[0001] The utility model relates to the technical field of faucets, in particular to a sealed water leakage prevention faucet. Background Art

[0002] As the faucet products disclosed in the patent documents of CN209278587U and CN208331335U, these faucet products are widely used in the market. Their structures mainly include a faucet housing and a valve core seat. The valve core seat includes an integrally formed hot water inlet pipe, a cold water inlet pipe, and an "L"-shaped water outlet hole. The valve core seat is inserted into the interior of the housing from bottom to top, and a sealing ring is arranged at the contact position between the water outlet hole and the water outlet pipe to improve the sealing performance, so that the water outlet hole and the water outlet pipe are conducted to achieve sealed water outlet.

[0003] Although the above products can effectively prevent internal water leakage during the entire water outlet process to solve the problem of water accumulation in the faucet, their structures have many defects: First, after the valve core seat is installed in the faucet housing, in order to ensure the alignment of the water outlet hole and the water outlet pipe, that is, to ensure that the water path can be smoothly connected to prevent water blockage after assembly, manual rotation and adjustment are required during the assembly process until the water outlet hole of the valve core seat and the water inlet of the water outlet pipe are aligned. The assembly is cumbersome, time-consuming and laborious; Second, after the valve core seat is installed in the faucet housing, welding is usually used for fixation to prevent the valve core seat from falling out of the faucet housing, resulting in extremely troublesome disassembly and assembly during repair; Third, although the water outlet effect can be achieved by the cooperation of the water outlet hole on the valve core seat and the water outlet pipe, the processing of such a water outlet hole is difficult, especially since the valve core seat itself is relatively large, the clamping process required during processing further increases the processing difficulty and the manufacturing cost is high; Fourth, defective products are inevitable during the processing of the valve core seat products. Most of these products can only be scrapped and reprocessed. Since the overall volume of the valve core seat is relatively large, the corresponding scrapping cost is also increased, resulting in waste of materials.

[0004] In view of this, the existing faucet structure needs to be further improved and enhanced. Summary of the Utility Model

[0005] The utility model provides a sealed water leakage prevention faucet with a simple structure and convenient disassembly and assembly. The water is directly discharged through the valve core connected to the water outlet pipe. During installation, the valve core is directly installed in the hollow tube body, and the installation can be completed without rotation and adjustment for alignment, which is time-saving and labor-saving. The main technical solutions are as follows:

[0006] A leak-proof faucet, comprising a faucet housing, the faucet housing includes a hollow tube body and a water outlet pipe that are interconnected, and the water outlet pipe is arranged on the side of the wall of the hollow tube body; a water passing valve seat, which is arranged inside the hollow tube body and abuts against the axial limiting portion on the wall of the hollow tube body to be axially limited at a certain height inside the hollow tube body; a water control core, which is supported and installed inside the hollow main body through the water passing valve seat. Sealing rings that are in abutting fit with the inner wall surface of the hollow tube body are respectively arranged on the outer circumferences of the water passing valve seat and the water control core. A drainage area surrounding the outer circumference of the water control core is formed between the two sealing rings, and at least a part of the water inlet of the water outlet pipe is covered and communicated by the drainage area; when adjusting the water output of the water control core, the water flow is discharged into the water outlet pipe through the drainage area.

[0007] Preferably, the outer diameter of the water control core is smaller than the inner diameter of the hollow tube body, and there is a spacing space between the outer peripheral wall of the water control core and the inner peripheral wall of the hollow tube body, and the drainage area is formed on this spacing space.

[0008] Preferably, the sealing ring on the outer circumference of the water control core can independently divide the spacing space into upper and lower partial spaces, where the upper partial space is away from the water passing valve seat and the lower partial space is close to the water passing valve seat, and the drainage area is formed on the lower partial space.

[0009] Preferably, both the water passing valve seat and the water control core are provided with two annular grooves for placing the sealing rings. The two annular grooves are horizontally parallel and perpendicular to the axis of the hollow tube body, so that after each sealing ring is placed in the annular groove, the sealing rings are arranged parallel to each other.

[0010] Preferably, by setting the axial height position of the axial limiting portion inside the hollow tube body, the height of the water passing valve seat inside the hollow tube body can be adjusted to adjust the covering area of the water inlet corresponding to the drainage area.

[0011] Preferably, the water inlet of the water outlet pipe is located between the two sealing rings.

[0012] Preferably, the water passing valve seat is horizontally suspended inside the hollow tube body.

[0013] Preferably, the water control core has a hot water port, a cold water port, and a mixing water port. The hot water port and the cold water port are correspondingly communicated with the hot water hole and the cold water hole on the water passing valve seat, and the mixing water port is communicated with the drainage area; when the water control core discharges water, the water flow discharged from the mixing water port is directly discharged into the water outlet pipe through the drainage area.

[0014] Preferably, the water outlet direction of the mixing water port is arranged towards the axial direction of the hollow tube body.

[0015] Preferably, it further includes a limit ring, which is arranged inside the hollow tube body to axially constrain the water control core and the water passing valve seat inside the hollow tube body.

[0016] As can be seen from the above description of the present invention, compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) The present invention provides a sealed anti-leak faucet with a simple structure and convenient disassembly and assembly. The water outlet pipe is directly connected through the valve core for direct water discharge. Sealing rings are respectively arranged on the outer peripheries of the water passing valve seat and the water control core. After the water control core is installed in the hollow tube body, a sealed drainage area surrounding the outer periphery of the water control core is formed between the two sealing rings. The drainage area will directly cover and conduct the water inlet of the water outlet pipe on the side of the hollow tube body. There is no need to rotate the water control core for adjustment and alignment. When the water flows out from the water control core, the water will directly flow through the drainage area into the water outlet pipe to complete the water delivery. It is not only convenient for installation, time-saving and labor-saving, but also there will be no water leakage between the drainage area and the water outlet pipe, ensuring the sealing performance.

[0018] (2) In this technical solution, the outer diameter of the water control core is smaller than the inner diameter of the hollow tube body, and a spacing space is left between the outer peripheral wall of the water control core and the inner peripheral wall of the hollow tube body. This spacing space is used to provide space for the drainage area and has many effects: First, the structural design method is simple and practical, and the processing difficulty is extremely low. During assembly, only by inserting the water control core into the hollow tube body, the spacing space will be automatically formed, and the installation efficiency is extremely high; Second, the drainage area is located on and coincides with the spacing space. When the water flows to the outer peripheral side of the water control core, it can relieve the pressure of the water flow, preventing the water flow from discharging too fast and causing vibration inside the faucet due to impact, effectively ensuring the stability; Third, all the water discharged from the water control core flows to the drainage area, that is, the water flow surrounds the outer periphery of the water control core. After the water control core is installed in the hollow tube body, without any rotation and alignment, the water can be accurately discharged into the water outlet pipe, making the installation convenient and fast.

[0019] (3) In this technical solution, the faucet product is mainly divided into a faucet shell, a water passing valve seat and a water control core. When the manufacturer manufactures, different materials can be selected for the above components to appropriately adjust the manufacturing cost. For example, the faucet shell and the water control core can be made of plastic materials, and the water passing valve seat can be made of all copper or steel, etc. According to the selection method according to the requirements, the benefits can be effectively improved while ensuring a certain product quality.

[0020] (4) In this technical solution, by adjusting the height position of the axial limiting part, the height of the water passing valve seat inside the hollow tube body can be adjusted. Further, since the water passing valve seat is used to support the water control core, that is, the height of the drainage area on the outer periphery of the water control core can also be adjusted accordingly, and the coverage area of the drainage area corresponding to the water inlet of the water outlet pipe can also be adjusted, with a simple structure.

[0021] (5) The water outlet direction of the water mixing port is set towards the axial direction of the hollow pipe body, so that the water flow discharged from the water control core can impact on the water passing valve seat for pressure relief and buffering, reducing the water flow impact force. Brief Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is an overall exploded view of the embodiment of the present invention;

[0024] Figure 2 It is a structural schematic diagram when the water control core of the embodiment of the present invention is installed Figure 1 ;

[0025] Figure 3 It is Figure 2 A partial enlarged view of the part shown as C;

[0026] Figure 4 It is a structural schematic diagram when the water control core of the embodiment of the present invention is installed Figure 2 ;

[0027] Figure 5 It is a structural schematic diagram of the water control core and the water passing valve seat of the embodiment of the present invention.

[0028] Explanation of the reference numerals in the drawings is as follows: 1. faucet housing; 11. hollow pipe body; 12. water outlet pipe; 121. water inlet; 2. water passing valve seat; 21. hot water hole; 22. cold water hole; 23. axial limiting part; 3. water control core; 31. hot water port; 32. cold water port; 33. water mixing port; 4. sealing ring; 5. limiting ring; A. drainage area; B. spacing space. Detailed Embodiments

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are the preferred embodiments of the present invention and should not be regarded as excluding other embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0030] In the claims, the description and the above drawings of the present invention, unless otherwise clearly defined, when using terms such as "first", "second" or "third", etc., are for distinguishing different objects and not for describing a specific order.

[0031] In the claims, the description and the above-mentioned drawings of the present utility model, unless otherwise clearly defined, for orientation terms, such as the use of terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise", etc. to indicate the orientation or position relationship are based on the orientation and position relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, so it should not be construed as limiting the specific protection scope of the present utility model.

[0032] In the claims, the description and the above-mentioned drawings of the present utility model, unless otherwise clearly defined, if the terms "fixed connection" or "fixedly connected" are used, they should be understood in a broad sense, that is, any connection method without displacement relationship and relative rotation relationship between the two, that is to say, it includes non-detachable fixed connection, detachable fixed connection, being integrated as a whole, and being fixedly connected through other devices or elements.

[0033] In the claims, the description and the above-mentioned drawings of the present utility model, if the terms "comprising", "having" and their variants are used, are intended to mean "including but not limited to".

[0034] Please refer to Figures 1 to 5 。

[0035] This embodiment provides a sealed leak-proof faucet, which mainly solves the problems that in the installation process of existing faucets, in order to ensure the smooth connection of the water circuit, rotation adjustment and alignment are required, the assembly process is cumbersome, and the overall manufacturing cost of the faucet product is high and the disassembly and assembly difficulty is high; the faucet structure mainly includes a faucet housing 1, a water passing valve seat 2, a water control core 3 and a limiting ring 5; among them,

[0036] The faucet housing 1 includes a hollow tube body 11 and a water outlet pipe 12 that are connected to each other. The water outlet pipe 12 is mainly welded to the side of the wall of the hollow tube body 11 by a welding method, and the water outlet pipe 12 and the hollow tube are arranged at a 90-degree angle; an axial limiting portion 23 is provided on the inner wall surface of the hollow tube body 11, and the axial limiting portion 23 is in the form of a stepped structure;

[0037] The water passing valve seat 2 mainly serves as a support for the water control core 3; the water passing valve seat 2 is arranged horizontally and suspended inside the hollow tube body 11, and abuts against the axial limiting portion 23 on the wall of the hollow tube body 11, so as to be axially limited at a certain height inside the hollow tube body 11, and the limiting height of the water passing valve seat 2 is determined by the setting position of the axial limiting portion 23;

[0038] The water control core 3 is supported and installed inside the hollow main body through the water passing valve seat 2, and its height inside the hollow main body is limited by the height of the water passing valve seat 2; sealing rings 4 that are in abutting fit with the inner wall surface of the hollow tube body 11 are respectively provided on the outer perimeters of the water passing valve seat 2 and the water control core 3. That is, when the water control core 3 and the water passing valve seat 2 are installed inside the hollow tube body 11, the sealing rings 4 on their outer perimeters will abut against the inner wall surface of the hollow tube body 11, and a sealed drainage area A surrounding the outer perimeter of the water control core 3 will be formed between the two sealing rings 4. This drainage area A can partially or completely cover and conduct the water inlet 121 of the water outlet pipe 12 on the side of the hollow main body; in this embodiment, there are two sealing rings 4 on the outer perimeters of the water passing valve seat 2 and the water control core 3, and the two form a group, and the drainage area A is formed between the two groups of sealing rings 4; in other embodiments, a single sealing ring 4 or three sealing rings 4 can be used as a group;

[0039] The limiting ring 5 is arranged inside the hollow tube body 11 and is used to axially constrain the water control core 3 and the water passing valve seat 2 inside the hollow tube body 11, prevent the water control core 3 and the water passing valve seat 2 from detaching from the faucet housing 1, ensure that the sealing ring 4 will not shift, and guarantee the sealing performance of the drainage area A; and through the constraint and fixing method of the limiting ring 5, the water control core 3, the water passing valve seat 2, and the faucet housing 1 are fixed into one body. There is no need to use the welding installation method, which is convenient for repair. The three can also be made of different materials to manufacture the faucet product, saving material costs while ensuring quality.

[0040] During use, when adjusting the water output of the water control core 3, the water flow output by the water control core 3 will directly drain into the drainage area A and then enter the water outlet pipe 12.

[0041] In this embodiment, referring to Figure 2 and Figure 3 , the outer diameter of the water control core 3 is smaller than the inner diameter of the hollow tube body 11, and there is a spacing space B between the outer peripheral wall of the water control core 3 and the inner peripheral wall of the hollow tube body 11. The drainage area A is formed on this spacing space B. The sealing ring 4 is arranged on the outer perimeter of the water control core 3. When the water control core 3 is arranged inside the hollow tube body 11, the sealing ring 4 is located on the spacing space B between the outer peripheral wall of the water control core 3 and the inner peripheral wall of the hollow tube body 11. Centered on the sealing ring 4 (equivalent to a spacer), the spacing space B is divided into two independent upper and lower spaces. The upper space is far from the water passing valve seat 2, and the lower space is close to the water passing valve seat 2. The two spaces are independent of each other, and the drainage area A is formed in the lower space. The sealing ring 4 effectively blocks the two spaces to ensure the sealing performance.

[0042] In this embodiment, referring to Figures 2 to 4 , the water passing valve seat 2 and the water control core 3 are respectively provided with two annular grooves for placing the sealing ring 4. The two annular grooves are horizontally parallel and perpendicular to the axis of the hollow tube body 11, so that after the sealing ring 4 is placed in the annular groove, the two sealing rings 4 can remain parallel and not inclined.

[0043] See Figure 3 , since there is a gap between the water control core 3, the water passing valve seat 2 and the inner wall surface of the hollow tube body 11, in order to ensure that the water control core 3 and the water passing valve seat 2 are installed in the hollow tube body 11 without shaking or tilting, the sealing rings 4 arranged in parallel on the outer periphery can not only ensure the sealing performance, but also limit and restrain the water control core 3 and the water passing valve seat 2, so that the water passing valve seat 2 and the water control core 3 are installed in the hollow tube body 11 without tilting or random displacement.

[0044] When the water control core 3 is constrained and fixed, due to the horizontal setting of the sealing ring 4, the sealing ring 4 will horizontally divide the gap space B into an upper part space and a lower part space; see 3, the water control core 3 is installed by rotating a certain angle around the axis, and the water flow discharged from the water control core 3 passes through the lower part space to be conducted with the water outlet of the water outlet pipe 12; see Figure 4 , when the water control core 3 rotates 180 degrees around the axis, the water flow discharged from the water control core 3 can still continue to be conducted with the water outlet of the water outlet pipe 12 through the lower part space; therefore, no matter what angle the water control core 3 rotates, it can be conducted with the water outlet of the water outlet pipe 12 through the lower part space, ensuring the product stability and simple installation.

[0045] In this embodiment, an axial limiting portion 23 is provided on the inner wall surface of the hollow tube body 11. The axial limiting portion 23 is an annular step structure, and the axial limiting portion 23 is used to limit the installation of the water passing valve seat 2, that is, the setting position and height of the axial limiting portion 23 determine the height of the water passing valve seat 2 in the hollow tube body 11; and the water passing valve seat 2 is used to support and install the water control core 3, and the height of the water control core 3 is also correspondingly determined by the axial limiting portion 23. Therefore, by setting the axial height position of the axial limiting portion 23 inside the hollow tube body 11, the height of the water passing valve seat 2 in the hollow tube body 11 can be adjusted, and correspondingly, the height of the drainage area A between the water passing valve seat 2 and the water control core 3 can also be adjusted, that is, by adjusting the height of the drainage area A, the coverage area of the water inlet 121 corresponding to the drainage area A can be adjusted to control the water flow rate (that is, the position height of the drainage area A determines the area of the water inlet 121 covered). In other embodiments, designing an axial limiting portion 23 that can move along the axial direction can control the water flow rate by itself, but the cost is relatively high and the practicality is not strong. Generally, the coverage area set by the manufacturer at the factory is sufficient for use.

[0046] In this embodiment, the water inlet 121 of the water outlet pipe 12 is located between the two sealing rings 4 and is conducted with the sealed drainage cavity between the two sealing rings 4, so the sealing effect can be ensured.

[0047] In this embodiment, see Figure 1 and Figure 5, the water control core 3 has a hot water port 31, a cold water port 32, and a mixing water port 33. When the water control core 3 and the water passing valve seat 2 are installed in the hollow tube body 11, the hot water port 31 and the cold water port 32 are correspondingly communicated with the hot water hole 21 and the cold water hole 22 on the water passing valve seat 2, and the mixing water port 33 is communicated with the drainage area A; the water outlet direction of the mixing water port 33 is set towards the axial direction of the hollow tube body 11, that is, the water outlet direction of the mixing water port 33 corresponds to the water passing valve seat 2, and the water flow can directly impact on the water passing valve seat 2 for pressure relief. When the water control core 3 discharges water, the water flow discharged from the mixing water port 33 is directly discharged into the water outlet pipe 12 from the drainage area A.

[0048] In this embodiment, the water passing valve seat 2 serves to support the water control core 3, connect the external water pipes, and conduct the water control core 3, and is not used for direct drainage. That is, the water passing valve seat 2 only has the hot water hole 21 and the cold water hole 22, and there is no need to process the water outlet hole, saving the processing and manufacturing cost. Moreover, the more holes are processed on a component, the more likely it is to leak water and the stability decreases; therefore, in this embodiment, the water passing valve seat 2 does not play a role in discharging water, but the water control core 3 is used for direct drainage, reducing the risk of water leakage; when inspecting the qualified rate of the faucet product, if it is found that the water passing valve seat 2 leaks due to cracking or holes, the overall volume of this kind of water passing valve seat 2 is small, and the direct replacement cost is small.

[0049] The working principle and usage process of the present utility model:

[0050] During installation, refer to Figure 1 , prepare the faucet housing 1, the water passing valve seat 2, the water control core 3, and the limit ring 5, and respectively sleeved the two groups of sealing rings 4 on the outer peripheries of the water passing valve seat 2 and the water control core 3; first, press the water control core 3 on the upper end of the water passing valve seat 2 to make the hot water port 31 and the cold water port 32 of the water control core 3 correspond to the hot water hole 21 and the cold water hole 22 on the water passing valve seat 2 to complete the installation of the two; then, refer to Figure 2 and Figure 3 , insert the water passing valve seat 2 and the water control core 3 into the hollow tube body 11 until the bottom of the water passing valve seat 2 abuts against the axial limiting portion 23 to be restricted from axial movement to complete the installation. During this process, the water passing valve seat 2 and the water control core 3 do not need any alignment and rotation. Even if the rotation angle of the water control core 3 when inserted into the hollow tube body 11 is in the form of Figure 4 , the water flow can still be smoothly conducted and discharged from the drainage area A; after that, screw the limit ring 5 into the hollow tube body 11 to restrain and fix the water passing valve seat 2 and the water control core 3; finally, insert the external cold and hot water pipes from the bottom of the hollow tube body 11 into the hot water hole 21 and the cold water hole 22 of the water passing valve seat 2 to conduct the hot water port 31 and the cold water port 32 of the water control core 3, that is, complete the installation.

[0051] In use, the hot water port 31 and the cold water port 32 of the water control core 3 are opened through a faucet handle (not shown in the figure) connected to the water control core 3, so that water flows out from the mixing port 33 and enters the drainage area A around the water control core 3. The water flowing through the drainage area A will directly drain into the water outlet pipe 12 to complete the faucet water outlet. The utility model has a simple structure and is convenient for disassembly and assembly. The water outlet pipe 12 is directly connected through the valve core for direct drainage. Sealing rings 4 are respectively arranged on the outer circumferences of the water passing valve seat 2 and the water control core 3. After the water control core 3 is installed in the hollow pipe body 11, a sealed drainage area A surrounding the outer circumference of the water control core 3 is formed between the two sealing rings 4. The drainage area A will directly cover and conduct the water inlet 121 of the water outlet pipe 12 on the side of the hollow pipe body 11. There is no need to rotate the water control core 3 for adjustment and alignment. When the water in the water control core 3 is discharged, the water will directly drain into the water outlet pipe 12 through the drainage area A to complete the water flow transportation. It is not only convenient for installation, time-saving and labor-saving, but also there will be no water leakage between the drainage area A and the water outlet pipe 12, and the sealing performance is guaranteed.

[0052] The above description of the specification and the embodiments is used to explain the protection scope of the present invention, but does not constitute a limitation to the protection scope of the present invention. Through the inspiration of the present invention or the above embodiments, those of ordinary skill in the art, in combination with common general knowledge, ordinary technical knowledge in the art and / or the prior art, can obtain modifications, equivalent replacements or other improvements to the embodiments of the present invention or some of its technical features through logical analysis, reasoning or limited experiments, which should all be included within the protection scope of the present invention.

Claims

1. A sealed and leak-proof faucet, characterized in that: include The faucet housing comprises a hollow tube body and a water outlet pipe which are interconnected, wherein the water outlet pipe is arranged on the side of the tube wall of the hollow tube body; A water valve seat, which is arranged inside the hollow tube body and abuts against an axial limiting portion on the tube wall of the hollow tube body, so as to be axially limited to a certain height inside the hollow tube body; The water control core is supported and installed inside the hollow main body through the water flow valve seat. The outer peripheries of the water flow valve seat and the water control core are respectively provided with sealing rings that abut against the inner wall of the hollow tube body. A drainage area surrounding the outer periphery of the water control core is formed between the two sealing rings. At least a part of the water inlet of the water outlet pipe is covered and connected by the drainage area. When the water outlet of the water control core is adjusted, the water flows through the drainage area and is discharged into the water outlet pipe.

2. A sealed and leakproof faucet as claimed in claim 1, characterized in that: The outer diameter of the water control core is smaller than the inner diameter of the hollow tube body. There is a spacing space between the outer peripheral wall of the water control core and the inner peripheral wall of the hollow tube body. The drainage area is formed on the spacing space.

3. A sealed and leakproof faucet as claimed in claim 2, characterized in that: The sealing ring on the outer periphery of the water control core can independently separate the spacing space into upper and lower spaces, wherein the upper space is far away from the water valve seat and the lower space is close to the water valve seat, and the drainage area is formed on the lower space.

4. A sealed and leakproof faucet as claimed in claim 3, characterized in that: The water valve seat and the water control core are respectively provided with two annular grooves for placing the sealing rings. The two annular grooves are arranged horizontally and in parallel and perpendicular to the axis of the hollow tube body, so that after each sealing ring is placed in the annular groove, each sealing ring is arranged parallel to each other.

5. The sealed and leak-proof faucet according to claim 2, characterized in that: By setting the axial height position of the axial limiting portion inside the hollow tube body, the height of the water valve seat inside the hollow tube body can be adjusted to adjust the coverage area of ​​the water inlet corresponding to the drainage area.

6. A sealed and leakproof faucet as claimed in claim 2, characterized in that: The water inlet of the water outlet pipe is located between the two sealing rings.

7. The sealed and leak-proof faucet according to claim 2, characterized in that: The water valve seat is horizontally suspended in the hollow tube body.

8. The sealed and leak-proof faucet according to claim 2, characterized in that: The water control core has a hot water inlet, a cold water inlet, and a mixed water inlet. The hot water inlet and the cold water inlet are correspondingly connected to the hot water hole and the cold water hole on the water valve seat, and the mixed water inlet is connected to the drainage area. When the water control core discharges water, the water discharged from the mixed water inlet is directly discharged from the drainage area to the water outlet pipe.

9. A sealed and leakproof faucet as claimed in claim 8, characterized in that: The water outlet direction of the water mixing port is arranged toward the axial direction of the hollow tube body.

10. A sealed and leakproof faucet according to any one of claims 1 to 9, characterized in that: It also includes a limiting ring, which is arranged in the hollow tube body to axially constrain the water control core and the water valve seat inside the hollow tube body.

Images