Water outlet device

Abstract

The invention discloses a water outlet device which comprises a water outlet piece and a plugging piece. The water outlet piece is provided with a water outlet cavity, a water outlet hole and a descaling cavity, the water outlet cavity is suitable for being communicated with the water outlet hole, the descaling cavity is suitable for storing a descaling agent, the descaling cavity is provided with a release hole, the release hole is suitable for being communicated with the water outlet cavity, water enters the descaling cavity, and after the descaling agent acts, scale is decomposed, and scale accumulation is prevented; the blocking piece is suitable for moving to block the release hole when water flows through the water outlet piece, water is prevented from entering the descaling cavity, the descaling agent is prevented from being brought out, the body health of a user is not affected, and waste is reduced. When the water outlet piece stops water, the water outlet piece moves to open the release hole, so that water is allowed to enter the descaling cavity, and the descaling effect is achieved.

Description

Technical Field

[0001] This invention relates to the field of aquatic products, and more specifically to an aquatic dispensing device. Background Technology

[0002] In existing technologies, residual water inside the showerhead remains for a long time after it is turned off, leading to limescale buildup, which in turn causes scaling and blockage of the water outlet. Descaling agents are used to remove limescale from the water system, but usually the descaling agent is always in contact with the water. The descaling agent is still working when the water is flowing. However, since the water is in a flowing state at this time, it is not easy for limescale to form. This leads to the overuse of descaling agents and waste. On the other hand, during the shower, the descaling agent will be in continuous contact with the human body for a long time, which may pose a health hazard. Summary of the Invention

[0003] The purpose of this invention is to overcome the aforementioned defects or problems existing in the prior art or to provide a material basis for overcoming the aforementioned defects or problems existing in the prior art, and to provide a water outlet device.

[0004] To achieve the above objectives, the present invention and its preferred embodiments employ the following technical solutions, but the embodiments are not limited to the following solutions: Option 1: A water outlet device, including... A water outlet component is provided with a water outlet chamber, a water outlet hole, and a descaling chamber. The water outlet chamber is adapted to communicate with the water outlet hole, the descaling chamber is adapted to store descaling agent, and the descaling chamber is provided with a release hole, which is adapted to communicate with the descaling chamber and the water outlet chamber. A plugging element is adapted to move to block the release hole when water flows through the outlet element, and to open the release hole when water stops flowing through the outlet element, so as to allow water to enter the descaling chamber.

[0005] Option 2, based on Option 1, is that the sealing member is adapted to move to block the release hole when water flows through the water outlet member under the force of water or the driving force of the driving member, and to move to open the release hole when water stops flowing through the water outlet member under the biasing force of the first biasing member or the driving force of the driving member.

[0006] Option 3, based on Option 1, the water outlet component includes a water outlet body and a storage component. The water outlet body is provided with the water outlet cavity and the water outlet hole, and the storage component is provided with the descaling cavity. The storage component is detachably connected to the water outlet body.

[0007] Option 4, based on Option 1, is that the water outlet hole is adapted to disconnect from the water outlet cavity when the water outlet cavity is stopped.

[0008] Option 5, based on Options 1 to 4, further includes a descaling component, which includes a descaling needle. The descaling component is located in the water outlet cavity and is adapted to move relative to the water outlet so that the descaling needle extends into the water outlet in a first direction or exits the water outlet in a second direction opposite to the first direction.

[0009] Option 6, based on Option 5, is adapted to move to the point where the descaling component stops water flow when the water outlet component stops, so that the descaling needle extends into the water outlet hole; the descaling component is also adapted to move to abut against the water outlet component and seal against it when the water outlet component stops water flow, so that the water outlet hole is disconnected from the water outlet cavity.

[0010] Option 7, based on Option 6, includes a water outlet nozzle that is flexible, and the descaling needle and the water outlet hole are adapted for an interference fit.

[0011] Option 8, based on Option 7, wherein the cross-sectional dimension of the water outlet gradually decreases along the first direction, the water outlet includes a central hole and several water passage grooves, each of the water passage grooves is arranged around the central hole, and the side of the water passage groove facing the center of the central hole is connected to the central hole; the dimension of the descaling needle gradually decreases along the first direction.

[0012] Option 9, based on Option 6, includes a sealing protrusion on one of the descaling component and the water outlet component, and a sealing part on the other. The sealing part has a sealing surface, and the sealing protrusion is arranged around the water inlet end of the water outlet hole and is adapted to seal with the sealing surface when the descaling needle is inserted into the water outlet hole. Preferably, the sealing protrusion or the sealing part is flexible.

[0013] Option 10, based on Option 6, the water outlet component is provided with a connecting part arranged around the water inlet end of the water outlet hole and a sealing abutment part connected to the connecting part. The sealing abutment part is adapted to seal with the descaling needle when the descaling needle moves along the first direction. Preferably, the size of the descaling needle gradually decreases along the first direction, the inner diameter of the sealing abutment part gradually decreases along the first direction, and the sealing abutment part is adapted to deform.

[0014] As can be seen from the above description of the present invention and its preferred embodiments, compared with the prior art, the technical solution of the present invention and its preferred embodiments have the following beneficial effects due to the adoption of the following technical means: A water outlet device includes a water outlet component and a sealing component.

[0015] The water outlet component is equipped with a water outlet chamber, a water outlet hole, and a descaling chamber. The water outlet chamber is suitable for communicating with the water outlet hole, and the descaling chamber is suitable for storing descaling agent. The descaling chamber is equipped with a release hole, which is suitable for connecting the descaling chamber and the water outlet chamber, so that water enters the descaling chamber. After the descaling agent takes effect, it decomposes the scale and prevents the scale from accumulating. The sealing element is designed to move to block the release hole when water flows through the outlet, preventing water from entering the descaling chamber, carrying away the descaling agent, affecting the user's health, and reducing waste. When the water outlet is stopped, it moves to open the release hole, allowing water to enter the descaling chamber and perform the descaling effect. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments are briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a perspective view of the water outlet device in Example 1; Figure 2 This is an exploded view of the water outlet device in Example 1; Figure 3 This is a schematic diagram of the structure of the water outlet component when it is stopped in Example 1; Figure 4 for Figure 3 Enlarged view of point a in the middle; Figure 5 This is a schematic diagram showing the fit between the sealing component and the water outlet component in Example 1; Figure 6 This is a schematic diagram of the storage device in Embodiment 1; Figure 7 This is a schematic diagram of the water outlet component in Example 1 when water is flowing through it; Figure 8 for Figure 7 Enlarged view of the marked area; Figure 9 This is a schematic diagram of the structure in Embodiment 1 where the water outlet hole and the water outlet cavity are sealed and isolated. Figure 10 This is a schematic diagram of the structure of the water outlet in the first type of embodiment ① where the water outlet and the water outlet cavity are sealed and isolated. Figure 11 This is a top view of the water outlet in the first embodiment where the water outlet and water outlet cavity are sealed and isolated. Figure 12 This is a schematic diagram of the second type of structure in Embodiment 1, which seals and isolates the water outlet from the water outlet cavity. Figure 13 This is a schematic diagram of another structure in Embodiment 1 where the water outlet hole and the water outlet cavity are sealed and isolated. Figure 14 This is a schematic diagram of the structure in Example 1 where the water outlet and the water outlet cavity are sealed and isolated. Figure 3 Enlarged view of point b in the middle; Figure 15This is a schematic diagram of the structure in Example 1 where the water outlet hole and the water outlet cavity are sealed and isolated, and the water outlet is in the water outlet state at this time.

[0018] Explanation of key figure labels: Water outlet component 1; Water outlet body 11; Cover 111; Second water passage hole 1111; Water outlet nozzle 112; Water outlet hole 1121; Intermediate hole 11211; Water passage groove 11212; Sealing part 1122; Sealing surface 11221; Connecting part 1123; Sealing abutment part 1124; Support cover 113; Water inlet hole 1131; Upper valve shell 114; Sealing cone surface 1141; Lower valve shell 115; Sliding hole 1151; Storage component 12; Descaling chamber 121; Release hole 1211; Water outlet chamber 13; Blocking component 2; Valve stem 21; Plug 22; Descaling component 3; Descaling needle 31; Plate 32; Sealing protrusion 321; First biasing component 4; Second biasing component 5; First direction 6; Second direction 7. Detailed Implementation The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are preferred embodiments of the present invention and should not be considered as excluding other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and accompanying drawings of this invention is for distinguishing different objects and not for describing a specific order.

[0020] Unless otherwise expressly defined, in the claims, description, and accompanying drawings of this invention, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing the invention and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific scope of protection of this invention.

[0021] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this invention should be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection by other means or components.

[0022] In the claims, description and accompanying drawings of this invention, the terms "comprising," "having," and variations thereof are used to mean "including but not limited to."

[0023] Example 1, refer to Figures 1-15 A water outlet device includes a water outlet component 1, a sealing component 2, a descaling component 3, a first biasing component 4, and a second biasing component 5.

[0024] The water outlet component 1 includes a water outlet body 11 and a storage component 12.

[0025] refer to Figure 2 , Figure 3 The water outlet body 11 includes a face cover 111, a water outlet 112, a support cover 113, an upper valve shell 114, and a lower valve shell 115. The face cover 111 and the support cover 113 are fixed together by snap-fit, threaded connection, or assembly by screws, forming a water outlet cavity 13. The water outlet 112 is located inside the water outlet cavity 13 and sits on the face cover 111. The water outlet 112 has a water outlet hole 1121, which communicates with the water outlet cavity 13.

[0026] The support cover 113 has a water inlet hole 1131. The upper valve shell 114 and the lower valve shell 115 are installed at the water inlet hole 1131 and fixed relative to the water inlet hole 1131, such as by welding or threaded connection. (Reference) Figure 4 The upper valve shell 114 is hollow and has a sealing cone surface 1141, the size of which gradually increases along the first direction 6. The lower valve shell 115 has a first water passage hole that allows water to pass through along the first direction 6; a sliding hole 1151 is provided in the middle of the lower valve shell 115. The upper valve shell 114 and the lower valve shell 115 are used for installing the sealing component 2. The first direction 6 is the water outlet direction.

[0027] The cover 111 is provided with a second water passage 1111 that connects the first water passage and the water outlet 13. The second water passage 1111 allows water to pass through along the second direction 7. The second direction 7 is opposite to the first direction 6.

[0028] refer to Figure 6The storage component 12 is used to store descaling agent. The storage component 12 is detachably connected to the center of the cover 111 of the water outlet 11 for easy replenishment of the descaling agent. In this embodiment, the storage component 12 is threaded into the cover 111 and sealed by a sealing ring to prevent water leakage from the water outlet chamber 13. The storage component 12 has a descaling chamber 121, which is suitable for storing descaling agent. The descaling chamber 121 has a release hole 1211, which is suitable for communicating with the water outlet chamber 13. The descaling agent can be solid particles that can dissolve slightly upon contact with water to achieve descaling, such as phosphates (e.g., calcium phosphate) and FOF descaling agents (whose working principle is based on the release of two weak organic groups that deactivate positive ions such as calcium and magnesium ions in the water and prevent scale formation through a weak electrical interference effect). To replenish the descaling agent, it can be done by removing the storage unit 12 and then replenishing it through the release hole 1211, or by removing the removable cover plate on the storage unit 12 to fully expose the descaling chamber 121.

[0029] refer to Figure 4 , Figure 5 , Figure 8 The sealing component 2 is adapted to move to block the release hole 1211 when water flows through the water outlet component 1, and to move to open the release hole 1211 when water stops flowing through the water outlet component 1, so as to allow water to enter the descaling chamber 121, dissolve the descaling agent inside, and make the descaling agent produce a descaling effect.

[0030] The sealing member 2 is adapted to move to seal the release hole 1211 under the driving force of water or the driving force of the driving member when water flows through the water outlet 1, and to move to open the release hole 1211 under the biasing force of the first biasing member 4 or the driving force of the driving member when water stops flowing through the water outlet 1. In this embodiment, to save costs, the sealing member 2 is hydraulically driven to slide along the first direction 6, and the sealing member 2 is reset by the first biasing member 4 to slide along the second direction 7. Specifically, refer to Figure 5 The sealing element 2 includes a valve stem 21 and a plug 22. Part of the valve stem 21 is located within the upper valve housing 114 and is adapted to slide within it. This part is fitted with a sealing ring to seal against the sealing cone surface 1141 under the action of the first biasing element 4 when the water outlet 1 is stopped. This ensures that the sealing element 2 can only slide under sufficiently high water pressure when water is flowing through. Another part of the valve stem 21 passes through the sliding hole 1151 and then protrudes from the lower valve housing 115 to assemble with the plug 22. The plug 22 is adapted to seal or open the release hole 1211 and has a certain degree of flexibility, such as being made of rubber. The dimensions at both ends of the sealing element 2 are larger than the dimensions of the sliding hole 1151 to prevent the sealing element 2 from detaching. In other embodiments, a sensor or switch identifies whether the water outlet 1 is stopped or flowing, and a driving element drives the sealing element 2 to move.

[0031] The two ends of the first biasing member 4 act on the lower valve housing 115 and the valve stem 21 respectively, and apply a force to the sealing member 2 in the second direction 7 (i.e., away from the sealing hole). The first biasing member 4 can be a mechanism that applies a unidirectional force to the sealing member 2, such as a spring, rubber, or a magnetic component that achieves this force through magnetism.

[0032] refer to Figure 3 , Figure 7 The descaling component 3 is used for descaling the water outlet 1121. The descaling component 3 includes a plate 32 and a descaling needle 31 protruding from the plate 32. The descaling component 3 is located in the water outlet cavity 13 and is adapted to move relative to the water outlet 1121 so that the descaling needle 31 extends into the water outlet 1121 along the first direction 6 or exits the water outlet 1121 along the second direction 7 opposite to the first direction 6. When it extends into the water outlet 1121, it achieves descaling of the water outlet 1121. When it exits the water outlet 1121, it ensures the water flow rate of the water outlet 1121. Specifically, when water enters the outlet chamber 13 through the second water passage 1111, it pushes the descaling component 3 to slide along the second direction 7, causing the descaling needle 31 to retract from the outlet hole 1121 (it can retract completely, but generally, to keep the product size small, only a portion retracts to allow water flow). When water stops (no more water enters through the inlet hole 1131), under the action of the second biasing component 5, the descaling component 3 slides along the first direction 6, causing the descaling needle 31 to enter the outlet hole 1121, thus achieving descaling of the outlet hole 1121. The two ends of the second biasing component 5 act on the descaling component 3 and the support cover 113 respectively to apply a force along the first direction 6 to the descaling component 3. Its mechanism principle is the same as that of the first biasing component 4.

[0033] To ensure the descaling agent dissolves fully in water and improves the descaling effect, the water outlet 1121 is adapted to disconnect from the water outlet chamber 13 when the water outlet chamber 13 is stopped, so as to prevent water from flowing out of the water outlet chamber 13.

[0034] The descaling component 3 is adapted to move to the point that the descaling needle 31 extends into the water outlet hole 1121 when the water outlet component 1 stops flowing; the descaling component 3 is also adapted to move to the point that it abuts against the water outlet component 1 and seals with it when the water outlet component 1 stops flowing, so that the water outlet hole 1121 is disconnected from the water outlet cavity 13.

[0035] For example ①Reference Figures 9-11The water outlet component 1 includes a water outlet nozzle 112, which is flexible. The descaling needle 31 is adapted to be interference-fitted with the water outlet 1121, thereby completely sealing the water outlet 1121 and disconnecting it from the water outlet chamber 13. Preferably, the cross-sectional dimension of the water outlet 1121 gradually decreases along the first direction 6, which facilitates the insertion and guidance of the descaling needle 31 and ensures that the end of the water outlet 1121 can be interference-fitted with the descaling needle 31 to achieve a seal. Preferably, the water outlet 1121 includes a central hole 11211 and several water passage grooves 11212. Each water passage groove 11212 is arranged around the central hole 11211, and the side of the water passage groove 11212 facing the center of the central hole 11211 communicates with the central hole 11211, making the water outlet 1121 form a sawtooth shape. Meanwhile, the size of the descaling needle 31 gradually decreases along the first direction 6. Since the soft rubber outlet holes 1121 are serrated, when the conical descaling needle 31 on the descaling component 3 moves downwards to discharge slag, the interference fit between the descaling needle 31 and the serrated outlet holes 1121 compresses the water outlet area, achieving immediate shut-off. Furthermore, the serrated feature, after reaching a certain level of engagement with the descaling needle 31, effectively seals the water flow. Even before fully reaching the end of its stroke, the water path is blocked, resulting in higher efficiency for immediate shut-off compared to traditional technologies.

[0036] ②Reference Figure 12 , Figure 13 One of the descaling component 3's plate 32 and the water outlet component 1's nozzle 112 is provided with a sealing protrusion 321, and the other is provided with a sealing part 1122. The sealing part 1122 has a sealing surface 11221. The sealing protrusion 321 is arranged around the water inlet end of the water outlet 1121 and is adapted to seal with the sealing surface 11221 when the descaling needle 31 is inserted into the water outlet 1121, thereby achieving a corresponding seal. The sealing protrusion 321 or the sealing part 1122 is flexible so that it can deform to make the two fit more tightly and the sealing effect better.

[0037] ③Reference Figure 14 , Figure 15 The water outlet 112 of the water outlet component 1 is provided with a connecting part 1123 surrounding the water inlet end of the water outlet hole 1121 and a sealing abutment part 1124 connected to the connecting part 1123. The sealing abutment part 1124 is adapted to seal with the descaling needle 31 when the descaling needle 31 moves along the first direction 6, so that water cannot enter the water inlet end of the water outlet hole 1121 from the gap between the sealing abutment part 1124 and the descaling needle 31.

[0038] Preferably, the size of the descaling needle 31 gradually decreases along the first direction 6, and the inner diameter of the sealing contact portion 1124 gradually decreases along the first direction 6. The sealing contact portion 1124 is adaptable to deformation and, when combined with the connecting portion 1123, forms approximately a V-shape. During the downward movement of the descaling component 3 to discharge slag, due to the force of the second biasing component 5 and the conical shape of the descaling needle 31, after moving to a certain depth, it makes an interference fit with the sealing contact portion 1124, achieving independence between the water outlet 1121 and the water outlet chamber 13, thus achieving immediate shut-off. Since the inner diameter of the sealing contact portion 1124 gradually decreases along the first direction 6 and has a certain elastic deformation capability, it does not affect the upward movement of the descaling component 3 in the water-flow state. After the sealing contact portion 1124 reaches a certain degree of cooperation with the descaling needle 31, it can effectively achieve sealing. Even before the descaling component 3 has completely moved to the end of its stroke, it can already achieve water circuit blockage, which is more efficient than traditional technology in achieving immediate shut-off.

[0039] When using, refer to Figure 7 , Figure 8 When water flows through the outlet component 1, the sealing component 2 slides along the first direction 6 under the action of water force, opening the water passage and sealing the release hole 1211. This prevents the descaling agent in the descaling chamber 121 from dissolving in the water and flowing out with the water, thus protecting the user's health and reducing waste. Water enters the outlet chamber 13 through the inlet hole 1131, the first through hole, and the second through hole 1111. Upon entry, it pushes the descaling component 3 to slide along the second direction 7, causing the descaling needle 31 to retract from the outlet hole 1121, allowing water to flow out from the outlet chamber 13 through the outlet hole 1121. (Reference) Figure 3 , Figure 4 When the water circuit is closed, under the action of the first biasing component 4, the sealing component 2 slides along the second direction 7, opening the release hole 1211, and water enters the descaling chamber 121 to dissolve the descaling agent and descale the water outlet chamber 13 (which is discharged with the water when the water is turned on again); at the same time, under the action of the second biasing component 5, the descaling needle 31 extends into the water outlet hole 1121 to achieve a seal.

[0040] Compared with the prior art, this embodiment has the following beneficial effects: In one exemplary embodiment, a water outlet device includes a water outlet component 1 and a sealing component 2.

[0041] The water outlet component 1 is provided with a water outlet chamber 13, a water outlet hole 1121 and a descaling chamber 121. The water outlet chamber 13 is adapted to communicate with the water outlet hole 1121. The descaling chamber 121 is adapted to store descaling agent. The descaling chamber 121 is provided with a release hole 1211. The release hole 1211 is adapted to communicate with the water outlet chamber 13, so that water enters the descaling chamber 121. After the descaling agent takes effect, it decomposes the scale and prevents the scale from accumulating. The sealing component 2 is adapted to move to block the release hole 1211 when water is flowing through the water outlet 1, preventing water from entering the descaling chamber 121 and carrying out the descaling agent, which could affect the user's health and reduce waste. When water is stopped from flowing through the water outlet 1, it moves to open the release hole 1211 to allow water to enter the descaling chamber 121 and produce a descaling effect.

[0042] In one exemplary embodiment, the water outlet 1121 is adapted to disconnect from the water outlet cavity 13 when the water outlet cavity 13 is stopped, to prevent water from flowing out of the water outlet cavity 13, so that the descaling agent can fully react with the residual water in the water outlet cavity 13 and improve the descaling effect.

[0043] The foregoing description of the specifications and embodiments is intended to explain the scope of protection of this invention, but does not constitute a limitation on the scope of protection of this invention. Modifications, equivalent substitutions, or other improvements to the embodiments of this invention or a portion thereof that can be obtained by those skilled in the art through logical analysis, reasoning, or limited experimentation, based on the teachings of this invention or the foregoing embodiments, in conjunction with common knowledge, general technical knowledge, and / or existing technology, should all be included within the scope of protection of this invention.

Claims

1. A water outlet device, characterized by: The utility outlet (1) is provided with a water outlet cavity (13), a water outlet hole (1121) and a descaling cavity (121), the water outlet cavity (13) is adapted to communicate with the water outlet hole (1121), the descaling cavity (121) is adapted to store a descaling agent, the descaling cavity (121) is provided with a release hole (1211) adapted to communicate the descaling cavity (121) with the water outlet cavity (13); The blocking member (2) is adapted to move to block the release hole (1211) when the water outlet member (1) is in water supply, and to move to open the release hole (1211) when the water outlet member (1) is in water stop, so as to allow water to enter the descaling cavity (121). The blocking member (2) is adapted to move to block the release hole (1211) under the water force or the driving force of the driving member when the water outlet member (1) is in water supply, and to move to open the release hole (1211) under the biasing force of the first biasing member (4) or the driving force of the driving member when the water outlet member (1) is in water stop.

2. A water outlet device as claimed in claim 1, characterized in that: The water outlet member (1) comprises a water outlet body (11) and a storage member (12), the water outlet body (11) is provided with the water outlet cavity (13) and the water outlet hole (1121), the storage member (12) is provided with the descaling cavity (121), and the storage member (12) is detachably connected with the water outlet body (11).

3. A water outlet device as claimed in claim 1, characterized in that: The water outlet hole (1121) is adapted to be disconnected with the water outlet cavity (13) when the water outlet cavity (13) is in water stop.

4. A water outlet device as claimed in claim 1, characterized in that: Further comprising a descaling member (3) comprising a descaling needle (31), the descaling member (3) is located in the water outlet cavity (13) and is adapted to move relative to the water outlet hole (1121) so that the descaling needle (31) extends into or exits from the water outlet hole (1121) along a first direction (6) or a second direction (7) opposite to the first direction (6).

5. A water outlet device according to any one of claims 1 to 4, wherein: The descaling member (3) is adapted to move to make the descaling needle (31) extend into the water outlet hole (1121) when the water outlet member (1) is in water stop; the descaling member (3) is also adapted to move to sealingly engage with the water outlet member (1) when the water outlet member (1) is in water stop, so as to disconnect the water outlet hole (1121) with the water outlet cavity (13).

6. A water outlet device as claimed in claim 5, characterised in that: The water outlet member (1) comprises a water outlet nozzle (112) having flexibility, and the descaling needle (31) is adapted to interference fit with the water outlet hole (1121).

7. A water outlet device as claimed in claim 6, characterised in that: The water outlet hole (1121) gradually decreases in cross-sectional size along the first direction (6), and comprises an intermediate hole (11211) and a plurality of water passing grooves (11212), each water passing groove (11212) is arranged around the intermediate hole (11211), and one side of the water passing groove (11212) towards the center of the intermediate hole (11211) communicates with the intermediate hole (11211); the descaling needle (31) gradually decreases in size along the first direction (6).

8. A water outlet device as claimed in claim 7, characterised in that: ​ 9. A water outlet device as claimed in claim 6, characterized in that: One of the descaling member (3) and the water outlet member (1) is provided with a sealing protrusion (321), and the other is provided with a sealing portion (1122), the sealing portion (1122) is provided with a sealing surface (11221), the sealing protrusion (321) is arranged around the water inlet end of the water outlet hole (1121), and is adapted to be in sealing cooperation with the sealing surface (11221) when the descaling needle (31) extends into the water outlet hole (1121); preferably, the sealing protrusion (321) or the sealing portion (1122) is flexible.

10. A water outlet device as claimed in claim 6, characterized in that: The water outlet member (1) is provided with a connecting portion (1123) arranged around the water inlet end of the water outlet hole (1121) and a sealing abutting portion (1124) connected with the connecting portion (1123), the sealing abutting portion (1124) is adapted to be in sealing cooperation with the descaling needle (31) when the descaling needle (31) moves along the first direction (6); preferably, the size of the descaling needle (31) along the first direction (6) gradually decreases, the inner diameter of the sealing abutting portion (1124) along the first direction (6) gradually decreases, and the sealing abutting portion (1124) is adapted to deform.

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