A quick drain residual water mechanism

Abstract

This utility model relates to the technical field of shower head (overhead spray) drainage, and in particular to a device for quickly draining residual water, comprising a main body having an inlet chamber and an outlet chamber, an inner body, a sealing element, and a return spring. The sealing element includes a plug, a first sealing part, and a second sealing part, used to close the inlet channel and connect the drain chamber to the atmosphere, respectively. When the water is turned off, the return spring drives the sealing element to return to its original position, opening the drain chamber and the air inlet chamber to quickly drain residual water; when the water is turned on, the water flow pushes the sealing element to close the drain chamber and the air inlet chamber, opening the inlet channel. This device ensures stable movement of the sealing element through guide strips, buckles, and other structures, and utilizes raised features to accelerate the water shut-off time. This utility model can effectively reduce residual water retention in the cavity, reduce the risk of bacterial growth, and requires no electricity, has a simple structure and low cost, significantly improving user experience and safety.

Description

Technical Field

[0001] This utility model relates to a mechanism for quickly draining residual water. Background Technology

[0002] In modern bathroom fixtures, the showerhead, as an indispensable water-using device in daily life, directly impacts user satisfaction through its user experience and safety. However, existing showerheads suffer from a significant technical problem in actual use: after the user finishes using the showerhead and turns off the water, residual water often remains inside. This residual water may suddenly flow out when the showerhead is shaken or bumped, causing unnecessary inconvenience to the user. Furthermore, when the showerhead is turned on again, the residual water may spray directly onto the user, severely affecting the user experience. In addition, residual water remaining in the showerhead cavity for extended periods can easily breed bacteria and accumulate impurities, potentially causing discomfort when sprayed again, thus reducing the overall showerhead user experience.

[0003] Currently, there is no efficient and convenient solution on the market to completely solve this problem. Traditional shower head designs typically rely on gravity drainage, but this method is inefficient, especially in complex structures or at specific installation angles, making it difficult to completely empty the cavity. Some products attempt to improve drainage by adding extra drain holes or modifying the structural design, but these methods often suffer from structural complexity, high costs, or inconvenience in operation, and cannot fundamentally solve the need for rapid drainage of residual water.

[0004] Meanwhile, the current drainage system cannot achieve stable and synchronous ventilation and drainage, which easily leads to leaks or slow drainage. Moreover, the drainage process also discharges a large amount of water from the pipes, creating a waterless appearance. This means that when water is turned on again, the empty section must be filled before water can flow out, making it impossible to achieve a rapid response. In addition, this phenomenon can easily generate noise when filling with water, leading users to speculate that the noise is caused by problems with the product, the pipes, or the water pressure, causing discomfort and annoyance to users. Summary of the Invention

[0005] In order to solve the above-mentioned technical problems, the purpose of this utility model is to provide a mechanism for quickly draining residual water.

[0006] This utility model is achieved through the following technical solution:

[0007] A rapid residual water drainage mechanism includes a body having an inlet chamber and an outlet chamber, wherein water can flow from the inlet chamber to the outlet chamber. The body is provided with an outlet hole communicating with the outlet chamber. The body also includes an inlet channel that allows water to flow from the inlet chamber to the outlet chamber. The body further includes a drain chamber and an air inlet chamber communicating with the outlet chamber. The mechanism also includes a sealing element that can be disposed within the outlet chamber and is movable within the outlet chamber. The sealing element includes a plug, a first sealing portion, and a second sealing portion. The plug is configured such that when the body is closed... When the body is in a water-filled state, it can block the water inlet channel; the first sealing part is configured to cooperate with the drain chamber to determine whether the water in the outlet chamber flows into the drain chamber; the second sealing part is configured to cooperate with the air inlet chamber to determine whether the atmosphere is connected to the outlet chamber through the air inlet chamber; it also includes a reset member, which is configured to cooperate with the sealing member. When the body is in a water-closed state, the reset member drives the sealing member to move so that the plug can block the water inlet channel; when the body is in a water-filled state, the water flow can act on the plug to drive the sealing member to move so as to open the water inlet channel for water flow.

[0008] This utility model also includes an inner body disposed within the main body, a water outlet cavity formed between the inner body and the water outlet panel of the main body, a water inlet channel disposed at the inner body, and a channel with a gradually increasing diameter in the direction of water flow formed in the water inlet channel; the inner body is also provided with an air inlet hole, which is configured to communicate with the air inlet cavity.

[0009] In this invention, the water inlet channel is horizontally arranged in the water outlet cavity, and the sealing element is configured to move horizontally in the water outlet cavity, so that the water flow that enters the water inlet cavity vertically can be directly changed to flow horizontally into the water inlet channel.

[0010] In this utility model, the first sealing part is configured as a first sealing ring sleeved on one lateral end of the sealing member, and the first sealing ring is configured to realize whether the water outlet chamber and the drain chamber are connected; the second sealing part is configured as a second sealing ring sleeved on the other lateral end of the sealing member, and the second sealing ring is configured to realize whether the water outlet chamber is connected to the atmosphere; the plug, the first sealing part and the second sealing part can move synchronously, and the water outlet chamber can be synchronously connected to or separated from the atmosphere and the drain chamber.

[0011] In this utility model, the plug is disposed in the middle of the sealing member located between the first sealing part and the second sealing part, the reset member is configured as a reset spring, the sealing member is provided with a connecting post, and the reset spring is configured to be sleeved on the outer periphery of the connecting post and abut against the sealing member.

[0012] In this invention, the plug, the first sealing part, and the second sealing part are located on the same axial direction; or: the plug, the first sealing part, the second sealing part, and the connecting column are located on the same axial direction.

[0013] In this utility model, the lower end of the inner body is recessed upward to form an installation space, the sealing element can be disposed in the installation space, the inner body located in the installation space is provided with a guide strip, and the sealing element is provided with a buckle that can engage with the guide strip.

[0014] In this utility model, the lower end face of the guide strip is provided with a first guide slope, and the upper end face of the buckle is provided with a second guide slope. The buckle is configured to be connected to the sealing element via a connecting piece. The first guide slope can cooperate with the second guide slope to connect the sealing element and the inner body together.

[0015] This utility model also includes a matching water inlet ball head and a ball head nut. The middle part of the inner body is recessed to form a water inlet cavity. A sealing gasket is disposed between the outer periphery of the ball head and the inner body. The ball head nut is configured to be inserted into the body and screwed into the upper outer periphery of the inner body.

[0016] In this utility model, the main body is provided with a mounting hole, and the water inlet ball head can be installed into the main body through the mounting hole and connected with the inner body. A boss is provided on the inner circumference of the mounting hole, and a flange is provided on the outer circumference of the ball head nut. After the ball head nut is screwed into the inner body, the flange can abut against the boss. The axial direction of the ball head nut is not parallel to the axial direction of the water inlet cavity.

[0017] The present invention provides a quick-drainage mechanism for residual water, which has the following advantages: Through the above technical solution, the device can effectively intercept water flow when the water is turned off, thus draining residual water from the outlet chamber. This reduces the need to simultaneously drain water from the inlet chamber and pipes, preventing water waste, shortening drainage time, and reducing the possibility of residual water remaining in the chamber for extended periods and breeding bacteria. The entire device requires no electricity, has a simple structure, and is low in cost. The introduction of vents accelerates the discharge of residual water, thereby improving user experience and safety. Attached Figure Description

[0018] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a perspective view of the present invention when applied to a top sprayer.

[0020] Figure 2 This is an exploded view of the present invention when applied to a top sprayer.

[0021] Figure 3 This is a cross-sectional view of the present invention when water is flowing through it.

[0022] Figure 4 This is a cross-sectional view of the water-cooled section in this utility model.

[0023] Figure 5 This is a schematic diagram of the fit between the water inlet ball head and the inner body in this utility model.

[0024] Figure 6 This is a schematic diagram of the sealing element in this utility model.

[0025] Figure 7 This is a schematic diagram of the inner body of this utility model.

[0026] Figure 8 This is a schematic diagram of the connection between the inner body and the sealing element in this utility model. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0028] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] Referring to the accompanying drawings, this utility model provides a quick-draining residual water device, which includes a body 1, an inlet chamber 2, an outlet chamber 3, an inlet channel 4, a drain chamber 5, an air inlet chamber 6, a sealing element 7, a plug 8, a first sealing part 9, a second sealing part 10, a return spring 11, a connecting column 12, an inner body 13, an outlet panel 14, an air inlet 15, an installation space 16, a guide strip 17, a buckle 18, a first guide slope 19, a second guide slope 20, a connecting piece 21, an inlet ball head 22, a ball head nut 23, a sealing gasket 24, a mounting hole 25, a boss 26, a flange 27, and an outlet 28. This device can be applied to the installation of shower heads or overhead spray products.

[0033] In this embodiment, the main body 1 serves as the core structure of the entire device, internally designed with an inlet chamber 2 and an outlet chamber 3 for the function of introducing and discharging water. The inlet chamber 2 and outlet chamber 3 are connected by an inlet channel 4, which is located on the inner body 13 and forms a channel structure with a gradually increasing diameter along the water flow direction. This allows the plug to gradually reduce the water flow from the inlet channel into the outlet chamber when the water is turned off, until it is completely blocked. This reduces the impact of water pressure on the seal, enabling a rapid response to block the inlet channel. Simultaneously, only residual water in the outlet chamber is discharged, while water in the inlet chamber and pipes is not discharged, saving water. This design effectively reduces the resistance of water flowing through the inlet channel 4, increases the water flow velocity, and reduces energy loss. The inner body 13 is located inside the body 1 and together with the water outlet panel 14 forms the water outlet cavity 3. The water outlet panel 14 is provided with multiple water outlet holes 28 for dispersing and spraying water to the outside. Note that a drain hole can also be provided on the water outlet panel. This drain hole is only connected to the drain cavity and its diameter is much larger than that of the water outlet hole to achieve rapid drainage.

[0034] The sealing element 7 is assembled inside the main body 1 and can move laterally within the water outlet chamber 3. The sealing element 7 consists of a plug 8, a first sealing part 9, and a second sealing part 10. These components can be a single unit, allowing for synchronized movement when water pressure pushes out or the inlet channel is closed. It can simultaneously seal and open the drain chamber and the air inlet chamber, preventing one chamber from opening while the other closes, thus avoiding leakage or slow drainage and ensuring the overall stability of the product's drainage. Specifically, the plug 8 is located in the middle of the sealing element 7 and is used to close the water inlet channel 4 when the water is off; the first sealing part 9 is a first sealing ring fitted at one end of the sealing element 7, used to control the connection between the water outlet chamber 3 and the drain chamber 5; the second sealing part 10 is a second sealing ring fitted at the other end of the sealing element 7, used to control the connection between the water outlet chamber 3 and the air inlet chamber 6. The design of the first sealing part 9 and the second sealing part 10 allows the sealing element 7 to simultaneously open or close the drain chamber 5 and the air inlet chamber 6 during movement, thereby ensuring the functional requirements of the device under different operating conditions.

[0035] The reset spring 11 (reset component) is a key component for driving the seal 7 to reset. It can also be a component that uses an elastic sheet to achieve reset. The reset spring is sleeved on the outer periphery of the connecting post 12 on the seal 7, with one end abutting against the seal 7 and the other end abutting against the inner body 13. When the device is in the water-off state, the reset spring 11 pushes the seal 7 to its initial position, allowing the plug 8 to close the water inlet channel 4 during use. Simultaneously, the first sealing part 9 and the second sealing part 10 can simultaneously or separately open the drain chamber 5 and the air inlet chamber 6, enabling rapid discharge of residual water. In the water-through state, the water flow acts on the plug 8, overcoming the elastic force of the reset spring 11 and pushing the seal 7 to move. At this time, the first sealing part 9 and the second sealing part 10 respectively close the drain chamber 5 and the air inlet chamber 6, opening the water inlet channel 4 to allow normal water flow. The water flows to the outlet chamber and out of the outlet hole, allowing the user to shower.

[0036] The lower end of the inner body 13 is recessed upward to form an installation space 16 for accommodating the seal 7 and related components. A guide strip 17 is provided on the inner body 13 within the installation space 16, while a snap fastener 18 is provided on the seal 7. The snap fastener 18 is connected to the seal 7 via a connecting piece 21, which can be an elastic piece to facilitate engagement between the snap fastener and the guide strip. A first guide slope 19 is provided on the lower end face of the guide strip 17, and a second guide slope 20 is provided on the upper end face of the snap fastener 18. The first guide slope 19 and the second guide slope 20 cooperate to achieve quick engagement between the snap fastener and the guide strip, ensuring good guidance and stability of the seal 7 during movement. This design not only improves the movement accuracy of the seal 7 and ensures coaxial movement of the entire assembly, but also avoids sealing failure caused by seal 7 misalignment. Preferably, a pair of guide sleeves and snap fasteners are provided.

[0037] The inlet ball head 22 cooperates with the ball head nut 23 to realize the water input function. The middle of the inner body 13 is recessed to form the water inlet cavity 2. A sealing gasket 24 is provided between the outer periphery of the inlet ball head 22 and the inner body 13 to prevent water leakage. The ball head nut 23 is inserted into the body 1 and screwed into the upper outer periphery of the inner body 13. The axis A of the ball head nut is not parallel to the axis B of the water inlet cavity, which restricts the swing direction and angle of the device, so that the water outlet on one side of the drain cavity and the water outlet on the other side of the device form a height difference, thereby realizing a specific angle adjustment function, so that water can be quickly discharged from the drain cavity when the water is turned off. A mounting hole 25 is provided on the top of the body 1. The inlet ball head is inserted into the body 1 through the mounting hole 25 and connected to the inner body 13. A boss 26 is provided on the inner circumference of the mounting hole 25, located below the top of the mounting hole. A flange 27 is provided on the outer circumference of the ball head nut 23. When the ball head nut 23 is screwed into the inner body 13, the flange 27 abuts against the boss 26, providing a fixing function. After installation, the upper end face of the flange is flush with the upper end face of the body. The seal is pressed into the inner body by a snap-fit, allowing the seal to slide laterally on the inner body without falling off. The ball head nut is directly threaded into the outer shell from the top, which eliminates the need for disassembly of the outer shell, resulting in a more integrated and cleaner appearance.

[0038] The water outlet 28 has a raised feature inside, meaning that during use, the height of the water outlet in the water outlet chamber is higher than the bottom surface of the water outlet chamber, which accelerates the water stoppage time of the water outlet 28. When the water flow stops, the raised feature can quickly block the water flow from the water outlet, reducing the possibility of water remaining inside the water outlet 28, and enabling residual water to flow quickly to the drainage chamber, thereby further improving the drainage efficiency of the device. In addition, the air inlet 15 is provided on the inner body 13 and communicates with the air inlet chamber 6 to introduce air. In the water-off state, air enters the air inlet chamber 6 through the air inlet 15 and communicates with the water outlet chamber 3 through the second sealing part 10 to form an airflow channel. This design can significantly accelerate the discharge speed of residual water and shorten the drainage time.

[0039] The working principle of this utility model is as follows: When the device is in a waterless state, the return spring 11 pushes the seal 7 to move to the initial position, the plug 8 closes the water inlet channel 4, and at the same time, the first sealing part 9 and the second sealing part 10 open the drain chamber 5 and the air inlet chamber 6 respectively, so that the residual water in the outlet chamber 3 can be discharged through the drain chamber 5, while air enters the outlet chamber 3 through the air inlet chamber 6, forming an airflow-assisted drainage effect. When the device is filled with water, the water flows in from the water inlet chamber 2, passes through the water inlet channel 4 and enters the outlet chamber 3. The water flow acts on the plug 8, overcoming the elastic force of the return spring 11 and pushing the seal 7 to move. At this time, the first sealing part 9 and the second sealing part 10 close the drain chamber 5 and the air inlet chamber 6 respectively, the water inlet channel 4 is opened, and the water is sprayed to the outside through the water outlet. When the device shuts off the water again, the water flow stops, the reset spring 11 pushes the seal 7 to reset, the plug 8 re-closes the water inlet channel 4, and at the same time the first sealing part 9 and the second sealing part 10 open the drain chamber 5 and the air inlet chamber 6 respectively, completing the discharge process of residual water.

[0040] The rapid residual water drainage device in this embodiment achieves rapid emptying of residual water from the cavity through the aforementioned technical solution. It requires no electricity, has a simple structure, and is low in cost, making it suitable for large-scale application. Simultaneously, the introduction of vents significantly accelerates the drainage speed of residual water, reducing the possibility of bacterial growth and thus improving user experience and safety.

[0041] It should be noted that: the inlet channel is horizontally configured within the outlet cavity, and the sealing element is configured to move horizontally within the outlet cavity. Water flowing vertically into the inlet cavity can be directly redirected to flow horizontally into the inlet channel. Normally, water flows vertically, but in this invention, the water flowing vertically is directly redirected to flow horizontally and enters through the inlet channel. Simultaneously: the plug, the first sealing part, and the second sealing part are located on the same axial direction; or: the plug, the first sealing part, the second sealing part, and the connecting column are located on the same axial direction, which can be horizontal. This ensures that the force exerted by the water on the plug is the same as or parallel to the direction of movement (or force) of the sealing element (plug, first sealing part, second sealing part, return spring). This reduces the conversion of force direction, allowing water to directly act on and drive the sealing element as a whole to move. In other words, the sealing element and the main body are centrally installed, preventing eccentricity, resulting in more stable drainage performance, and preventing leakage of structural components when the sealing element expands or contracts.

[0042] The foregoing description illustrates and describes preferred embodiments of the present invention. As previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or related technical or knowledge. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A rapid residual water drainage mechanism, comprising a body having an inlet chamber and an outlet chamber, wherein water flow from the inlet chamber can flow into the outlet chamber, and the body is provided with an outlet hole that communicates with the outlet chamber, characterized in that, The main body is also equipped with a water inlet channel, which enables the water in the water inlet chamber to flow to the water outlet chamber. The main body is also equipped with a drain chamber and an air inlet chamber that can communicate with the water outlet chamber. It also includes a sealing element that can be configured within the water outlet chamber and is movable within the water outlet chamber; the sealing element includes a plug, a first sealing part, and a second sealing part; wherein: the plug is configured to block the water inlet channel when the body is in the water-off state; the first sealing part is configured to cooperate with the drain chamber to determine whether the water flow in the water outlet chamber flows into the drain chamber; the second sealing part is configured to cooperate with the air inlet chamber to determine whether the atmosphere is connected to the water outlet chamber through the air inlet chamber; It also includes a reset component, which is configured to connect with a seal. When the main body is in the water-off state, the reset component drives the seal to move so that the plug can block the water inlet channel. When the main body is in a water-flow state, the water flow can act on the plug to drive the seal to move, thereby opening the water inlet channel for water flow.

2. The rapid residual water drainage mechanism according to claim 1, characterized in that, It also includes an inner body disposed within the main body, and a water outlet cavity is formed between the inner body and the water outlet panel of the main body. The water inlet channel is disposed in the inner body, and the water inlet channel has a channel whose diameter gradually increases according to the direction of water flow. The inner body is also provided with an air inlet hole, which is configured to communicate with the air inlet cavity.

3. The rapid residual water drainage mechanism according to claim 2, characterized in that, The water inlet channel is arranged laterally in the water outlet chamber, and the sealing element is configured to move laterally in the water outlet chamber, so that the water flow that enters the water inlet chamber vertically can be directly changed to flow laterally into the water inlet channel.

4. A rapid residual water drainage mechanism according to claim 2 or 3, characterized in that, The first sealing part is configured as a first sealing ring sleeved on one lateral end of the sealing member, and the first sealing ring is configured to enable the water outlet chamber and the drain chamber to be connected; the second sealing part is configured as a second sealing ring sleeved on the other lateral end of the sealing member, and the second sealing ring is configured to enable the water outlet chamber to be connected to the atmosphere; the plug, the first sealing part and the second sealing part can move synchronously, and the water outlet chamber can be synchronously connected to or separated from the atmosphere and the drain chamber.

5. The rapid residual water drainage mechanism according to claim 4, characterized in that, The plug is disposed in the middle of the sealing member located between the first sealing part and the second sealing part. The reset member is configured as a reset spring. The sealing member is provided with a connecting post. The reset spring is configured to be sleeved on the outer periphery of the connecting post and abut against the sealing member.

6. The rapid residual water drainage mechanism according to claim 5, characterized in that, The plug, the first sealing part, and the second sealing part are located in the same axial direction; or: the plug, the first sealing part, the second sealing part, and the connecting column are located in the same axial direction.

7. A rapid residual water drainage mechanism according to any one of claims 2, 3, 5, and 6, characterized in that, The lower end of the inner body is recessed upward to form an installation space. The sealing element can be disposed in the installation space. A guide strip is disposed on the inner body located in the installation space. A buckle that can engage with the guide strip is disposed on the sealing element.

8. The rapid residual water drainage mechanism according to claim 7, characterized in that, The lower end face of the guide strip is provided with a first guide slope, and the upper end face of the buckle is provided with a second guide slope. The buckle is configured to be connected to the seal via a connecting piece. The first guide slope can cooperate with the second guide slope to connect the seal to the inner body.

9. A rapid residual water drainage mechanism according to claim 8, characterized in that, It also includes a matching inlet ball head and a ball head nut. The inner body has a recessed inlet cavity in the middle. A sealing gasket is disposed between the outer periphery of the ball head and the inner body. The ball head nut is configured to be inserted into the body and screwed into the outer periphery of the upper end of the inner body.

10. A rapid residual water drainage mechanism according to claim 9, characterized in that, The main body is provided with a mounting hole, through which the water inlet ball head can be inserted into the main body and connected with the inner body. A boss is provided on the inner circumference of the mounting hole, and a flange is provided on the outer circumference of the ball head nut. After the ball head nut is screwed into the inner body, the flange can abut against the boss. The axial direction of the ball head nut is not parallel to the axial direction of the water inlet cavity.

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