Water flow switching valve and water outlet device

Abstract

The utility model provides a kind of water flow switching valve and water outlet device, water flow switching valve includes the valve body with lower opening installation groove, and the valve seat of being set in the middle passage of installation groove bottom, and the shaft rod that can be moved in installation groove is pulled;Installation groove is provided with first chamber, second chamber and third chamber from top to bottom with the increasing diameter of outer diameter in turn;Shaft rod is equipped with first sealing member, is placed in first chamber to realize the movable seal of shaft rod and valve body;Second chamber is provided with clamping pad, to limit first sealing ring in first chamber;Valve seat is set in the third chamber by snap spring.The radial insertion of snap spring is realized the quick connection of valve seat and valve body.The setting of the elastic clamping jaw of clamping pad makes clamping pad be directly installed in the bottom opening of installation groove, and first sealing member is limited and fixed, installation is convenient and fast, and it is not necessary to set a reverse buckle installation cavity in installation groove bottom, and valve body is easy to form.

Description

Technical Field

[0001] This utility model relates to the field of switching valve technology, and more specifically, to a water flow switching valve and a water outlet device. Background Technology

[0002] A flow switching valve is a device used to control the direction of water flow and is widely used in various scenarios where the water flow path needs to be switched. Among them, the pull-type flow switching valve achieves the switching of water flow by pulling up the shaft, and it typically includes a valve body, valve seat, shaft, and seals.

[0003] For example, existing switching valves, such as the one disclosed in application number 202310268689.5, are easy-to-operate switching valves and bathroom devices, which can switch water flow by lifting a shaft. However, they have the following shortcomings:

[0004] The valve body and valve seat are connected by threads. As is well known, if the two threads are not aligned during assembly, stripping can easily occur, leading to thread deformation or even failure to connect. In addition, to ensure the tightness of the connection, a torque tool is usually required to tighten the thread to ensure the tightening force.

[0005] Meanwhile, the seal between the shaft and the valve body is located in the undercut groove of the valve body. This groove is inconvenient to machine and is located deep within the valve body, making the installation of the seal difficult. Utility Model Content

[0006] In view of this, the purpose of this utility model is to provide a water flow switching valve and a water outlet device to solve the above problems.

[0007] The present invention adopts the following solution:

[0008] This application provides a water flow switching valve, including a valve body with a lower opening mounting groove, a valve seat disposed in the mounting groove, and a shaft capable of being lifted and moved within the mounting groove; the mounting groove is provided with a first chamber, a second chamber, and a third chamber with progressively increasing outer diameters from top to bottom; a first sealing element is sleeved on the shaft and placed in the first chamber to achieve a movable seal between the shaft and the valve body; a retaining pad is disposed in the second chamber, having a limiting part and a plurality of elastic retaining claws connected to the limiting part; the valve seat is disposed in the third chamber by a retaining spring, and a retaining groove is provided on its peripheral wall; through grooves are provided radially on both sides of the peripheral wall of the third chamber, penetrating the peripheral wall and communicating with the third chamber;

[0009] The pad can be inserted into the mounting groove from the bottom opening along the axial direction. After entering the second chamber, the claws elastically deform against the inner wall of the second chamber and finally engage with the second chamber to confine the first seal within the first chamber.

[0010] The snap ring has two elastic snap arms connected at one end, which can be inserted radially into the through groove and the snap groove to connect the valve seat and the valve body.

[0011] Furthermore, the pad has an annular limiting portion, and the outer periphery of the limiting portion is provided with a plurality of outwardly extending and downwardly angled elastic claws.

[0012] Furthermore, the snap ring is U-shaped in general, and the two ends of its snap-fit ​​arm are inclined outward.

[0013] Furthermore, the slot is an annular slot; the snap-fit ​​arm is provided with a snap-fit ​​part that can elastically wrap around the inner wall of the slot.

[0014] Furthermore, the valve body and the valve seat are made of plastic.

[0015] Furthermore, an inlet is provided on the side wall of the third chamber; a first outlet is provided on the side wall of the second chamber; a passage in the valve seat forms a second outlet; a first sealing step is formed between the second chamber and the third chamber, and a second sealing step is formed on the upper end face of the valve seat; a second sealing element is provided on the shaft, which can move between the first sealing step and the second sealing step under the drive of the shaft, so as to control the opening and closing of the first outlet and the second outlet with the inlet.

[0016] Furthermore, the first sealing step and the second sealing step are provided with inclined first sealing surfaces; the upper end and the lower end of the second sealing member are provided with inclined second sealing surfaces adapted to the first sealing surfaces.

[0017] Furthermore, the outer periphery of the valve body is positioned below the inlet, and sealing rings are provided above the outlet and between the inlet and the outlet to form a seal with the cavity of the outer casing.

[0018] Furthermore, an elastic element is also provided on the shaft; the elastic element is placed in the mounting groove so that the second seal abuts against the second sealing step under the action of the elastic element.

[0019] A water outlet device includes a body and a water flow switching valve installed in the mounting cavity of the body.

[0020] By adopting the above technical solution, the present invention can achieve the following technical effects:

[0021] This invention provides a water flow switching valve that achieves a quick connection between the valve seat and valve body through the radial insertion of a snap ring. Compared to existing technologies, this avoids assembly difficulties or even assembly failures caused by thread misalignment. Furthermore, the elastic claws of the snap ring allow for direct mounting through the bottom opening of the mounting groove, effectively limiting and fixing the first sealing element. This makes installation convenient and quick, and eliminates the need for an undercut mounting cavity at the bottom of the mounting groove, facilitating valve body molding. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic cross-sectional view of a water flow switching valve according to an embodiment of the present invention. Figure 1 ;

[0024] Figure 2 This is a schematic cross-sectional view of a water flow switching valve according to an embodiment of the present invention. Figure 2 ;

[0025] Figure 3 This is an exploded structural diagram of a water flow switching valve according to an embodiment of the present invention;

[0026] Figure 4 This is an exploded structural diagram of the valve body and valve seat of a water flow switching valve according to an embodiment of this utility model;

[0027] Figure 5 This is a schematic diagram of the snap ring structure of a water flow switching valve according to an embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the gasket structure of a water flow switching valve according to an embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of the valve body structure of a water flow switching valve according to an embodiment of the present invention;

[0030] Figure 8 This is a schematic cross-sectional view of the through groove of the valve body of a water flow switching valve according to an embodiment of the present invention;

[0031] Figure 9 This is a schematic diagram of the valve seat structure of a water flow switching valve according to an embodiment of the present invention;

[0032] Figure 10 This is a schematic cross-sectional view of the valve body and valve seat of a water flow switching valve according to an embodiment of the present invention.

[0033] Figure 11 This is a schematic diagram of the water outlet route of a water flow switching valve according to an embodiment of the present invention;

[0034] Figure 12 This is a schematic diagram of the water outlet route of a water flow switching valve according to an embodiment of the present invention;

[0035] Icons: Valve body 1, Valve seat 2, Shaft 3, First chamber 4, Second chamber 5, Third chamber 6, First seal 7, Gasket 8, Limiting part 9, Claw 10, Snap ring 11, Snap groove 12, Through groove 13, Snap arm 14, Snap part 15, Inlet 16, First outlet 17, Second outlet 18, First sealing step 19, Second sealing step 20, Second seal 21, Sealing ring 22, Elastic element 23. Detailed Implementation

[0036] 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. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art 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. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0037] Example

[0038] Combination Figures 1 to 12As shown, this embodiment provides a water flow switching valve, including a valve body 1 with a lower opening mounting groove, a valve seat 2 disposed in the mounting groove, and a shaft 3 capable of being lifted and moved within the mounting groove; the mounting groove is provided with a first chamber 4, a second chamber 5, and a third chamber 6 with progressively increasing outer diameters from top to bottom; a first sealing element 7 is sleeved on the shaft 3 and placed in the first chamber 4 to achieve a movable seal between the shaft 3 and the valve body 1; a retaining pad 8 is provided in the second chamber 5, which has a limiting part 9 and a plurality of elastic retaining claws 10 connected to the limiting part 9; the valve seat 2 is disposed in the third chamber 6 by a retaining spring 11, and a retaining groove 12 is provided on its peripheral wall; through grooves 13 are provided radially on both sides of the peripheral wall of the third chamber 6, penetrating the peripheral wall and communicating with the third chamber 6;

[0039] The pad 8 can be inserted from the bottom opening along the axial direction of the mounting groove, and after entering the second chamber 5, the claw 10 undergoes elastic deformation due to the action of the inner wall of the second chamber 5, and finally engages with the second chamber 5 to limit the first sealing member 7 to be located in the first chamber 4.

[0040] The snap ring 11 has two elastic snap arms 14 connected at one end. The snap arms 14 can be inserted radially into the through groove 13 and the snap groove 12 to realize the connection between the valve seat 2 and the valve body 1.

[0041] Specifically, during installation, the retaining pad 8 is pushed into the mounting groove from the lower opening. The elastic retaining claw 10 retracts inward under the pressure of the inner wall of the second chamber 5. Due to the elasticity of the retaining claw 10, it will engage with the second chamber 5 after entering it, thus confining the first sealing element 7 within the first chamber 4. After the valve seat 2 is placed into the third chamber 6, the two retaining arms 14 of the retaining spring 11 are inserted radially into the through groove 13 and embedded in the annular retaining groove 12 of the valve seat 2, thereby limiting the position of the valve body 1 and the valve seat 2, and thus connecting the valve seat 2 to the valve body 1.

[0042] This solution achieves a quick connection between the valve seat 2 and the valve body 1 through the radial insertion of the retaining ring 11. Compared with existing technologies, it avoids the problems of poor assembly or even assembly failure caused by thread misalignment. Furthermore, the elastic claws 10 of the retaining gasket 8 allow it to be directly installed and locked into the bottom opening of the mounting groove, limiting and fixing the first sealing element 7. Installation is convenient and quick, and there is no need for an undercut mounting cavity at the bottom of the mounting groove, making valve body 1 easier to form.

[0043] like Figure 6 As shown, this application further proposes that the pad 8 has an annular limiting part 9, and the outer periphery of the limiting part 9 is provided with a plurality of outwardly extending and downwardly inclined elastic claws 10.

[0044] The annular limiting part 9 refers to a ring-shaped support structure arranged circumferentially around the shaft 3. Its inner diameter is larger than the outer diameter of the shaft 3 to form a clearance fit, and its outer diameter forms an interference fit with the inner wall of the second chamber 5, which is used to limit the axial movement range of the first seal 7. The outwardly extending and downwardly inclined elastic claw 10 refers to a strip-shaped elastic body extending from the outer periphery of the limiting part 9. The end of the claw 10 is inclined outward. When the pad 8 is pushed into the second chamber 5 by external force, the outer surface of the claw 10 contacts the inner wall of the second chamber 5 and generates radial compression deformation until it is fully inserted into the second chamber 5, forming an interference fit to achieve axial limiting. In this state, the upper end face of the limiting part 9 contacts the lower step of the first chamber 4, forming an axial limiting constraint on the first seal 7, preventing the seal from falling out of the working position during the lifting of the shaft 3. Through the above technical solution, this application realizes the rapid assembly and reliable fixing of the pad 8, reduces the requirements for the machining accuracy of parts, and improves the assembly efficiency.

[0045] like Figure 5 As shown, this application further proposes that the retaining spring 11 is U-shaped overall, and the two ends of the retaining arm 14 are inclined outward. The retaining groove 12 is an annular groove 12; the retaining arm 14 is provided with a retaining portion 15 that can elastically encircle the inner wall of the retaining groove 12.

[0046] The U-shaped retaining ring 11 refers to a metal part with two parallel, extending elastic retaining arms 14 connected at one end. It can be made of spring steel through stamping. Its U-shaped structure can adapt to the dimensional tolerances of the through groove 13 and the retaining groove 12 through elastic deformation. The outward inclination of the two ends of the retaining arms 14 means that the ends of the retaining arms 14 are inclined away from the center of the retaining ring 11. This can be achieved by forming a preset angle through stamping. When inserted into the through groove 13, the inclined ends are guided by the inner wall of the retaining groove 12 to expand outward and smoothly pass through the retaining groove 12. Then, the retaining part 15 wraps around the inner wall of the retaining groove 12. The retaining part 15 wraps around the inner wall of the retaining groove 12, making it difficult for the retaining ring 11 to fall off. Compared with existing technologies, the traditional valve seat 2 and valve body 1 are connected by threads, requiring precise alignment of the threads and tightening with tools. This solution uses the elastic deformation of the U-shaped retaining ring 11 to achieve quick installation without the need for tools.

[0047] This application further proposes that the valve body 1 and valve seat 2 are made of plastic.

[0048] The plastic material refers to a high-molecular polymer material, preferably PA material. The valve body 1 and valve seat 2, molded from plastic material, replace the traditional metal valve body 1 and valve seat 2, significantly reducing costs while maintaining strength and functionality, thus improving market competitiveness.

[0049] In this embodiment, as Figure 2 and Figure 4As shown, an inlet 16 is provided on the side wall of the third chamber 6; a first outlet 17 is provided on the side wall of the second chamber 5; a passage in the valve seat 2 forms a second outlet 18; a first sealing step 19 is formed between the second chamber 5 and the third chamber 6, and a second sealing step 20 is formed on the upper end face of the valve seat 2; a second sealing element 21 is provided on the shaft 3, which can move between the first sealing step 19 and the second sealing step 20 under the drive of the shaft 3 to control the opening and closing of the first outlet 17 and the second outlet 18 with the inlet 16. An elastic element 23 is also provided on the shaft 3; the elastic element 23 is placed in the mounting groove so that the second sealing element 21 seals against the second sealing step 20 under the action of the elastic element 23.

[0050] The inlet 16 refers to the fluid inlet located on the side wall of the third chamber 6, which can be formed by opening a hole in the side wall of the valve body 1, for introducing external water into the valve body 1. The first outlet 17 refers to the fluid outlet located on the side wall of the second chamber 5, which can be formed by opening a hole in the side wall of the second chamber 5, for guiding water flow outward. The second outlet 18 refers to the fluid outlet formed by the central passage of the valve seat 2, which can be achieved through the central through hole of the valve seat 2, for forming another water flow output path. The first sealing step 19 refers to the annular step structure located between the second chamber 5 and the third chamber 6, for cooperating with the second sealing element 21 to achieve a seal. The second sealing step 20 refers to the annular sealing surface formed by the upper end face of the valve seat 2, which can be formed by machining the top plane of the valve seat 2, for contacting the second sealing element 21. The second seal 21 refers to the sealing structure installed on the shaft 3. Specifically, it can be a rubber ring or a silicone ring. By moving the shaft 3 up and down, it switches the contact state with the first sealing step 19 or the second sealing step 20, thereby controlling the opening and closing of the water flow path.

[0051] Specifically, such as Figure 11 and Figure 12 As shown, when the shaft 3 is in its initial position under the action of the elastic element 23, the second seal 21 is in sealing contact with the second sealing step 20, and at this time, the inlet 16 is connected to the first outlet 17. When the shaft 3 is pulled to the designated position, the second seal 21 disengages from the second sealing step 20 and is in sealing contact with the first sealing step 19, at which time the inlet 16 is connected to the second outlet 18, and the water flows out through the central channel of the valve seat 2. By moving the shaft 3 up and down, the position change of the second seal 21 between the first sealing step 19 and the second sealing step 20 realizes the switching control of the two outlets.

[0052] This application further proposes that the first sealing step 19 and the second sealing step 20 are provided with inclined first sealing surfaces; the upper and lower ends of the second sealing member 21 are provided with inclined second sealing surfaces adapted to the first sealing surfaces. The inclined sealing surfaces can be used to generate radial displacement along the inclined surfaces, thereby automatically compensating for the wear gap of the sealing surfaces under the action of water pressure and maintaining the sealing contact pressure.

[0053] This application further proposes a water flow switching valve, wherein the outer periphery of the valve body 1 is positioned below the inlet 16, and a sealing ring 22 is provided above the outlet and between the inlet 16 and the outlet to facilitate sealing with the cavity of the outer shell.

[0054] This application further proposes a water outlet device, including a main body and a water flow switching valve installed in the mounting cavity of the main body. The main body is provided with two water outlets, which are respectively connected to a first water outlet 17 and a second water outlet 18, and the water flow switching valve realizes the switching of the water path.

[0055] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions that fall within the scope of this utility model's concept are protected by this utility model.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.

Claims

1. A water flow switching valve comprising a valve body having a lower opening mounting groove, a valve seat provided in the mounting groove, and a shaft rod capable of performing a lifting movement within the mounting groove; characterized in that, The mounting groove is provided with a first chamber, a second chamber, and a third chamber with progressively increasing outer diameters from top to bottom; a first sealing element is sleeved on the shaft and placed in the first chamber to achieve a movable seal between the shaft and the valve body; a retaining pad is provided in the second chamber, which has a limiting part and multiple elastic retaining claws connected to the limiting part; the valve seat is disposed in the third chamber by a retaining spring, and a retaining groove is provided on its peripheral wall; through grooves are provided radially on both sides of the peripheral wall of the third chamber, penetrating the peripheral wall and communicating with the third chamber; The pad can be inserted into the mounting groove from the bottom opening along the axial direction. After entering the second chamber, the claws elastically deform against the inner wall of the second chamber and finally engage with the second chamber to confine the first seal within the first chamber. The snap ring has two elastic snap arms connected at one end, which can be inserted radially into the through groove and the snap groove to connect the valve seat and the valve body.

2. The water flow switching valve according to claim 1, characterized by The pad has an annular limiting portion, and the outer periphery of the limiting portion is provided with a plurality of outwardly extending and downwardly angled elastic claws.

3. The water flow switching valve according to claim 1, characterized by The snap ring is U-shaped, with both ends of its snap-fit ​​arm tilted outwards.

4. The water flow switching valve according to claim 1, characterized by The slot is an annular slot; the snap-fit ​​arm is provided with a snap-fit ​​part that can elastically wrap around the inner wall of the slot.

5. The water flow switching valve according to claim 1, wherein The valve body and the valve seat are made of plastic.

6. The water flow switching valve according to any one of claims 1 to 5, characterized by An inlet is provided on the side wall of the third chamber; a first outlet is provided on the side wall of the second chamber; a passage in the valve seat forms a second outlet; a first sealing step is formed between the second chamber and the third chamber, and a second sealing step is formed on the upper end face of the valve seat; a second sealing element is provided on the shaft, which can move between the first sealing step and the second sealing step under the drive of the shaft, so as to control the opening and closing of the first outlet and the second outlet with the inlet.

7. The water flow switching valve according to claim 6, characterized by The first sealing step and the second sealing step are provided with inclined first sealing surfaces; the upper end and the lower end of the second sealing member are provided with inclined second sealing surfaces that are adapted to the first sealing surfaces.

8. The water flow switching valve according to claim 6, wherein The outer periphery of the valve body is positioned below the water inlet, and sealing rings are provided above the water outlet and between the water inlet and the water outlet to form a seal with the cavity of the outer shell.

9. The water flow switching valve according to claim 6, characterized in that, The shaft is also provided with an elastic element; the elastic element is placed in the mounting groove so that the second sealing element seals against the second sealing step under the action of the elastic element.

10. A water outlet device, comprising a body, characterized in that, It also includes a water flow switching valve as described in any one of claims 1-9, installed in the mounting cavity of the body.

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