Foam liquid valve, foaming device and toilet

Abstract

The utility model discloses a kind of foam liquid valve, foaming device and closestool, including valve body and switching component, baffle is equipped in valve body, to be separated into liquid passage and foam liquid passage, connecting hole is equipped on baffle, liquid inlet hole connected with drive liquid source is equipped on liquid passage, foam liquid passage is equipped with bubble inlet and bubble outlet, bubble inlet is connected with foam liquid source, bubble outlet is connected with foaming device, switching component includes switching piece and elastic piece, switching piece includes driving block, connecting rod and piston, connecting rod is slid in connecting hole, driving block is equipped in liquid passage, driving block is matched with the inner peripheral wall gap of liquid passage, piston is used to open and close foam liquid passage, elastic piece is resisted between driving block and baffle, connecting rod and connecting hole are equipped with commutation passage, drive liquid enters foam liquid passage first than foam liquid.The utility model discloses a kind of foam liquid valve, can be inner wall wetting to avoid bonding, and avoid foam liquid agglomerate after valve, affect switch, without user regular dismounting and cleaning, use is very convenient.

Description

Technical Field

[0001] This utility model relates to the field of valves, and in particular to a foam liquid valve, a foaming device, and a toilet. Background Technology

[0002] Foam shields are commonly used in smart toilets to clean or cover the water seal surface. During foam generation, foam liquid needs to be delivered to the target location to mix with water and agitate. Therefore, the storage device for the foam liquid needs to be connected to the corresponding structure within the foam shield. When the smart toilet does not need the foam shield function, this connection needs to be closed, often requiring a switching valve or a switching valve. In some existing technologies, the valve opening and closing is often driven by a motor, which complicates the foam liquid valve structure. Furthermore, various parts and components within the valve are prone to adhesion to the foam liquid as it passes through, and after the valve is closed, the remaining foam liquid can easily clump and evaporate, affecting the valve's normal opening and closing and the user experience. Summary of the Invention

[0003] This utility model proposes a foam liquid valve, a foaming device, and a toilet, aiming to solve the technical problems in the prior art where various positions and components inside the foam liquid valve are prone to adhesion when foam liquid passes through, and the foam liquid left behind after the valve is closed is prone to clumping and evaporation, affecting the normal opening and closing of the valve and the user experience.

[0004] To achieve the above objectives, a first aspect of this utility model provides a foam liquid valve, comprising:

[0005] The valve body is provided with a partition to divide the valve body into a liquid passage and a foam liquid passage. The partition is provided with a connection hole for fluid to pass through. The liquid passage is provided with a liquid inlet hole connected to a driving liquid source. The other end of the liquid inlet hole is provided with a foam inlet and a foam outlet on the foam liquid passage. The foam inlet is used to connect to the foam liquid source, and the foam outlet is used to connect to the foaming device.

[0006] A switching assembly includes a switching element and an elastic element. The switching element includes a drive block, a connecting rod, and a piston connected in sequence. The connecting rod is slidably disposed in the connecting hole, and the drive block is disposed in the liquid passage with a clearance fit between the drive block and the inner peripheral wall of the liquid passage. The piston is movably disposed in the foam liquid passage for blocking or opening the foam inlet and the foam outlet. The elastic element abuts against the drive block and the partition plate. When the driving liquid flows into the liquid passage, the drive block can compress the elastic element and move under the impact of the driving liquid, so that the piston releases the blockage of the foam inlet and the foam outlet. The connecting rod and the inner peripheral wall of the connecting hole form a flow exchange channel, and the driving liquid enters the foam liquid passage before the foam liquid.

[0007] The foam liquid valve provided according to the first aspect of this utility model can control the flow of foam liquid while simultaneously wetting the inner wall before the foam liquid enters to prevent adhesion, and preventing the foam liquid from clumping after the flow stops, thus avoiding affecting the subsequent opening and closing of the foam liquid valve. Therefore, it eliminates the need for regular disassembly and cleaning by the user, making it very convenient to use.

[0008] According to some embodiments of the present invention, an annular rib is provided on the side of the partition near the liquid passage, the annular rib is arranged around the connecting hole, and the projection of the driving block covers the annular rib in the axial direction of the connecting rod.

[0009] According to some embodiments of the present invention, the outer peripheral wall of the connecting rod is provided with ribs, and the ribs are parallel to the axis of the connecting rod.

[0010] According to some embodiments of the present invention, the valve body includes a bottom wall and a side wall, the foam liquid channel is formed by the partition, the bottom wall and the side wall, the foam liquid channel gradually expands from the partition to the bottom wall so that the foam liquid channel is frustoconical, and the foam inlet and the foam outlet are disposed on the side wall;

[0011] The piston includes a first side for sealing the foam inlet and a second side for sealing the foam outlet, the shapes of which are adapted to the sidewalls of the foam liquid channel.

[0012] According to some embodiments of the present invention, the diameter of the piston gradually expands from the connecting rod in a direction away from the connecting rod, so that the side shape of the piston is adapted to the side wall of the foam liquid channel. When the piston blocks the foam inlet and the foam outlet, the piston divides the foam liquid channel into a first chamber and a second chamber, and the first chamber communicates with the connecting hole.

[0013] According to some embodiments of the present invention, the piston is provided with a first through hole connecting the first cavity and the second cavity.

[0014] According to some embodiments of the present invention, when the piston blocks the foam inlet and the foam outlet, the piston divides the foam liquid channel into a first chamber and a second chamber, the first chamber being connected to the connecting hole;

[0015] The piston further includes at least a third side surface, which, together with the side wall, forms a second through hole that connects the first cavity and the second cavity.

[0016] A second aspect of this utility model provides a foaming device, comprising: a foaming component and the aforementioned foam liquid valve, wherein the foaming component is provided with an air inlet, and the foaming device further comprises:

[0017] The suction tube is provided with a first inlet, a first flow channel and a first outlet in sequence. The first outlet is connected to the foaming component. The first flow channel includes a first equal-diameter flow channel and a tapered flow channel. The first equal-diameter flow channel is disposed between the tapered flow channel and the first outlet. The larger diameter end of the tapered flow channel is connected to the first inlet, and the smaller diameter end is connected to the first equal-diameter flow channel. The first equal-diameter flow channel is provided with a suction port connected to the foam outlet.

[0018] According to the second aspect of the present invention, the foaming device fully utilizes the pressure difference formed by water flowing through channels of different diameters to absorb liquid, without the need for an additional liquid pump to drive the foam liquid, which helps to simplify the device structure.

[0019] According to some embodiments of this utility model, the foaming component is sequentially provided with a second water inlet, a second flow channel, and a second water outlet. A rectifier is provided in the second flow channel, and the rectifier is provided with at least one rectifier hole. The total water passage cross-sectional area of ​​at least one rectifier hole is smaller than the water passage cross-sectional area of ​​the second flow channel. The air inlet is provided between the rectifier hole and the second water outlet so that when water flows out from the rectifier, air can enter the second flow channel from the air inlet.

[0020] According to some embodiments of the present invention, the foaming component further includes a third water inlet and a third water outlet. The third water outlet is disposed between the second water inlet and the rectifier, and the third water inlet is disposed between the second water outlet and the rectifier. The third water outlet is connected to the first water inlet, and the third water inlet is connected to the first water outlet.

[0021] According to some embodiments of this utility model, when water flows out from the rectifier hole, a negative pressure zone is formed on the side of the rectifier facing away from the second water inlet, and both the air inlet and the third water inlet are in the negative pressure zone.

[0022] According to some embodiments of the present invention, the connecting line between the air inlet and the third water inlet is perpendicular to the second flow channel.

[0023] A third aspect of this utility model provides a toilet, including: the foam liquid valve described above, and / or, the foaming device described above.

[0024] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0025] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0026] Figure 1 An exploded view of the foam liquid valve provided in an embodiment of the present invention is shown;

[0027] Figure 2 A schematic diagram of the structure of the foam liquid valve provided in an embodiment of this utility model is shown;

[0028] Figure 3 A schematic diagram of the valve body provided in an embodiment of the present invention is shown;

[0029] Figure 4 A schematic diagram of a piston provided in an embodiment of the present invention is shown;

[0030] Figure 5 A schematic diagram of another structure of the piston provided in an embodiment of the present invention is shown;

[0031] Figure 6 This diagram illustrates another structural schematic of the foam liquid valve provided in an embodiment of the present invention;

[0032] Figure 7 A schematic diagram of the foaming device provided in an embodiment of this utility model is shown;

[0033] Figure 8 A schematic diagram of the structure of the suction tube provided in an embodiment of this utility model is shown;

[0034] Figure 9 A schematic diagram of the structure of the foaming component provided in an embodiment of this utility model is shown;

[0035] Figure 10A schematic diagram of the structure of the rectifier provided in this embodiment of the present invention is shown;

[0036] Figure label:

[0037] 1000, Foam liquid valve;

[0038] 100. Valve body; 110. Baffle plate; 111. Connecting hole; 112. Flow exchange channel; 113. Annular rib; 120. Side wall; 130. Bottom wall; 140. Liquid passage; 141. Liquid inlet; 150. Foam liquid channel; 151. Foam inlet; 152. Foam outlet; 153. First chamber; 154. Second chamber;

[0039] 200. Switching component; 210. Elastic element; 220. Switching element; 221. Drive block; 222. Connecting rod; 2221. Rib; 223. Piston; 2231. First side; 2232. Second side; 2233. Third side; 2234. First through hole; 2235. Second through hole;

[0040] 2000, Foaming device;

[0041] 300, Foaming component; 310, Air inlet; 320, Second water inlet; 330, Second flow channel; 340, Second water outlet; 350, Rectifier; 351, Rectifier hole; 360, Third water inlet; 370, Third water outlet;

[0042] 400. Suction pipe; 410. First inlet; 420. First flow channel; 421. First equal-diameter flow channel; 422. Gradually narrowing flow channel; 423. Second equal-diameter flow channel; 424. Suction port; 430. First outlet. Detailed Implementation

[0043] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0044] refer to Figure 1 and Figure 2 In some specific embodiments of this utility model, a foam liquid valve 1000 is provided, which can control the passage of foam liquid and wet the inner wall of the valve before the foam liquid passes through, and drain or dilute the remaining foam liquid after the foam liquid passes through, so as to avoid the adhesion and clumping of foam liquid inside the valve.

[0045] The foam liquid valve 1000 provided by this utility model can be applied to some foaming devices 2000 that need to be connected to a foam liquid source to foam the foam liquid for use, such as the foam shield of a smart toilet, the foaming device 2000 of the toilet's washing water circuit, or devices such as faucets and shower heads that need to foam soap, disinfectant, etc. into foam for users to clean and disinfect.

[0046] refer to Figures 1-3 The foam liquid valve 1000 provided in some specific embodiments of this utility model includes a valve body 100 and a switching component 200.

[0047] The valve body 100 is a hollow structure, with an internal cavity. A partition 110 extends from the inner wall of the valve body 100 to divide the cavity into a liquid passage 140 and a foam liquid passage 150. The partition 110 also has a connecting hole 111 penetrating through it, allowing fluid to flow between the liquid passage 140 and the foam liquid passage 150 through the connecting hole 111. The liquid passage 140 has an inlet hole 141 connected to a driving liquid source, which can be water or other pressurized liquid. The driving liquid enters the liquid passage 140 through the inlet hole 141. Specifically, the inlet hole 141 can be positioned opposite the connecting hole 111. The foam channel is provided with a foam inlet 151 and a foam outlet 152. The foam inlet 151 is connected to the foam liquid source, and the foam outlet 152 is connected to the foaming device 2000 that needs to use the foam liquid. Thus, the foam liquid can enter the foam liquid channel 150 from the foam inlet 151 and then flow to the foaming device 2000 from the foam outlet 152.

[0048] It is understandable that there are many ways to drive the foam liquid flow. For example, a liquid pump can be set on the foam liquid source side to drive the foam liquid flow, or a liquid extraction device can be set on the foam outlet 152 side or on the foaming device 2000 to draw the foam liquid flow.

[0049] The switching assembly 200 includes a switching element 220 and an elastic element 210. The elastic element 210 can be configured as a spring. The switching element 220 includes a driving block 221, a connecting rod 222, and a piston 223 connected in sequence. The connecting rod 222 is slidably disposed in the connecting hole 111. When the connecting rod 222 is disposed in the connecting hole 111, the driving block 221 is disposed in the liquid passage 140. The driving block 221 can be configured as a flat plate, with its two sides facing the connecting hole 111 and the liquid inlet hole 141, respectively. When the driving fluid flows in from the liquid inlet hole 141, it can impact the driving block 221 to make it have a tendency to move. Furthermore, there is a clearance fit between the driving block 221 and the inner peripheral wall of the liquid passage 140, and the driving fluid can flow through the gap to the side of the driving block 221 near the connecting hole 111. Piston 223 is movably disposed in foam liquid channel 150 for blocking or opening foam inlet 151 and foam outlet 152. Elastic member 210 abuts between drive block 221 and partition 110. When drive liquid flows into liquid channel 140, drive block 221 can compress elastic member 210 and move under the impact of drive liquid, so that piston 223 releases the blockage of foam inlet 151 and foam outlet 152.

[0050] The connecting rod 222 and the inner wall of the connecting hole 111 form a flow exchange channel 112. Therefore, even if the connecting rod 222 passes through the connecting hole 111, it will not completely block the connecting hole 111. Liquids in the liquid passage 140 and the foam liquid passage 150 can flow freely through the connecting hole 111, and the driving liquid enters the foam liquid passage before the foam liquid.

[0051] It is understandable that before the driving fluid enters the fluid passage 140, the elastic element 210 abutting between the driving block 221 and the partition 110 can be in a fully extended state, that is, neither compressed nor stretched. At this time, the piston 223 is in a state of blocking the bubble inlet 151 and the bubble outlet 152, and is not subject to the force of the elastic element 210. Alternatively, when the piston 223 is in a state of blocking the bubble inlet 151 and the bubble outlet 152, the driving block 221 compresses the elastic element 210, putting it in a compressed state.

[0052] The working principle and process of the foam liquid valve 1000 provided in this embodiment are explained below:

[0053] When no driving fluid enters the liquid passage 140, the piston 223 blocks the foam inlet 151 and the foam outlet 152, and the elastic element 210 is in a compressed state or neither stretched nor compressed. At this time, even if a device for driving the flow of foam liquid is provided on the foam liquid source side or the foaming device 2000 side, the foam liquid still cannot flow to the foaming device 2000.

[0054] When the driving fluid enters the liquid passage 140, part of the driving fluid flows through the gap between the driving block 221 and the inner peripheral wall of the liquid passage 140 to the connecting hole 111, and then through the exchange channel 112 into the foam liquid channel 150. Before the foam liquid enters the foam liquid channel 150, it wets the inner wall of the foam liquid channel 150. Part of the driving fluid impacts the driving block 221, causing it to move against the spring force, thereby driving the piston 223 to move. This causes the piston 223 to gradually open the foam inlet 151 and the foam outlet 152. Therefore, when the foam liquid enters, it will not stick due to the dryness of the inner wall, making it difficult to clean. Thus, the foam liquid can enter the foaming device 2000 through the foam liquid valve 1000 for foaming and is available for user use.

[0055] Understandably, when foam liquid valves are applied to toilets, faucets, and other sanitary ware, the ware is also equipped with a first driving device and a second driving device (neither shown), such as a liquid pump. The first driving device can be connected to a driving liquid source to drive the driving liquid into the inlet hole 141, and the second driving device can be connected to a foam liquid source to drive the foam liquid into the foam liquid channel 150. Therefore, the first driving device can first drive the driving liquid into the inlet hole 141, and the driving liquid enters the foam liquid channel 150 through the exchange channel 112 to wet the inner wall of the foam liquid channel 150. Then, the second driving device drives the foam liquid into the foam liquid channel 150, thereby preventing the foam liquid from sticking together.

[0056] Understandably, the driving of the driving fluid and foaming liquid by the first and second driving devices can be controlled by software programs. For example, the first driving device can be started first for a preset time (to ensure complete wetting) before the second driving device starts. Alternatively, the first and second driving devices can be controlled by two independent switches, allowing the user to choose to control the first driving device to start before the second driving device, thereby ensuring the wetting effect.

[0057] When the driving fluid source is turned off, the driving block 221 gradually resets under the elastic force of the spring, and the piston 223 gradually moves in the direction close to the connection hole 111 and gradually blocks the foam inlet 151 and the foam outlet 152. At this time, the foam liquid remaining in the foam liquid channel 150 can be squeezed into the liquid passage 140 through the exchange channel 112 and mixed and diluted with the driving fluid remaining therein, so as to avoid clumping in the foam liquid channel 150 and affecting the opening and closing of the subsequent foam liquid valve 1000.

[0058] The foam liquid valve 1000 provided in this embodiment of the invention can control the flow of foam liquid, while simultaneously wetting the inner wall before the foam liquid enters to prevent adhesion, and preventing the foam liquid from clumping after the flow stops, thus avoiding affecting the subsequent opening and closing of the foam liquid valve 1000. Therefore, it eliminates the need for users to periodically disassemble and clean it, making it very convenient to use.

[0059] refer to Figure 2 and Figure 3 In some specific embodiments of this utility model, an annular rib 113 is provided on the side of the partition 110 near the liquid passage 140. The annular rib 113 is generally arranged to extend out in the direction close to the liquid inlet 141. The connecting hole 111 is surrounded by the annular rib 113. In the axial direction of the connecting rod 222, the projection of the driving block 221 completely covers the annular rib 113.

[0060] Therefore, the spring presses against the drive block 221 and the partition 110. Thus, even if the spring is compressed to its limit, the drive block 221 cannot completely seal the connection hole 111. Therefore, when the foam liquid valve 1000 is open, the drive liquid will continuously flow into the foam liquid channel 150 through the connection hole 111. As a result, the foam liquid will be continuously diluted, affecting the subsequent foaming process. Furthermore, the hydraulic pressure of the drive liquid will increase the pressure in the foam liquid channel 150, thereby affecting the entry of foam liquid at the foam inlet 151.

[0061] According to the embodiment of this utility model, by setting the annular rib 113, when the driving block 221 moves under the action of the driving fluid, it can completely cover the annular rib 113 before the spring is compressed to the limit, so that the foam liquid channel 150 is opened, while avoiding the connection hole 111 being constantly open, which would cause the driving fluid to affect the normal passage of the foam liquid.

[0062] refer to Figure 1 In some specific embodiments of this utility model, protruding ribs 2221 are provided on the outer peripheral wall of the connecting rod 222, and the ribs 2221 are parallel to the axis of the connecting rod 222. Specifically, there can be one, two, three or more ribs 2221, which are arranged on the outer peripheral wall of the connecting rod 222. Thus, even if the ribs 2221 abut against the inner wall of the connecting hole 111, two adjacent ribs 2221 and the inner wall of the connecting hole 111 can form a flow exchange channel 112. Furthermore, by setting the ribs 2221 to abut against the inner wall of the connecting hole 111, a guiding function can also be achieved, preventing the connecting rod 222 from shifting during sliding, which would reduce the sealing effect of the piston 223.

[0063] refer to Figures 2-5In some specific embodiments of this utility model, the valve body 100 includes a bottom wall 130 and a side wall 120. The bottom wall 130 and the partition 110 are arranged opposite to each other, and the side wall 120 is arranged between the partition 110 and the bottom wall 130. It can be understood that the foam liquid channel 150 is formed by the partition 110, the bottom wall 130 and the side wall 120. The foam liquid channel 150 gradually expands from the partition 110 to the bottom wall 130. That is, the foam liquid channel 150 is roughly frustum-shaped. The foam inlet 151 and the foam outlet 152 are arranged on the side wall 120.

[0064] The piston 223 includes a first side 2231 for sealing the foam inlet 151 and a second side 2232 for sealing the foam outlet 152. Specifically, the first side 2231 and the second side 2232 are respectively provided corresponding to the foam inlet 151 and the foam outlet 152, and the shapes of the first side 2231 and the second side 2232 are adapted to the side wall 120 of the foam liquid channel 150 to ensure complete sealing during sealing.

[0065] It is understandable that if both the foam liquid channel 150 and the piston 223 are configured as equal-diameter cylindrical shapes as in the prior art, the piston 223 needs to move a certain distance before fully opening the inlet 151 and the outlet 152 (taking the same circular cross-section of the inlet and outlet as an example, the distance is at least equal to the diameter of the inlet 151 or the outlet 152). Therefore, after opening the foam liquid valve 1000, the foam liquid needs to delay for a certain period of time to reach the maximum flow rate.

[0066] According to the foam liquid valve 1000 provided in this embodiment of the present invention, by setting the foam liquid channel 150 into a frustum shape, the shape of the first side surface 2231 and the second side surface 2232 of the piston 223 is adapted to the side wall 120 of the foam liquid channel 150. As soon as the piston 223 stops blocking the inlet 151 and the outlet 152, the maximum flow cross-sectional area of ​​the inlet and outlet is exposed, thereby achieving the maximum foam liquid flow rate and avoiding the impact on the foaming effect due to the small amount of foam liquid in the early stage. On the other hand, the above-mentioned shape design can also achieve an interference fit between the side surface of the piston 223 and the side wall 120 of the foam liquid cavity, making its sealing effect better. Even if the surface of the piston 223 is worn, it can be compensated by the interference fit to avoid sealing failure, thereby extending the service life of the foam liquid valve 1000.

[0067] refer to Figures 2-4In some specific embodiments of this utility model, the diameter of the piston 223 gradually expands from the connecting rod 222 in a direction away from the connecting rod 222. That is, the piston 223 is also configured to be approximately frustum-shaped, so that the shape of the side of the piston 223 is adapted to the side wall 120 of the foam liquid channel 150. It can be understood that the first side 2231 and the second side 2232 are part of the side of the piston 223 at this time. When the piston 223 moves to the position of blocking the foam inlet 151 and the foam outlet 152, due to the frustum-shaped design of the foam liquid channel 150, the piston 223 no longer moves. At this time, the piston 223 does not directly fit with the partition 110, but divides the foam liquid channel 150 into a first cavity 153 and a second cavity 154, wherein the first cavity 153 is connected to the connecting hole 111.

[0068] Understandably, if the piston 223 is directly attached to the partition 110, a small amount of foam liquid will still be trapped between the piston 223 and the partition 110. After a period of time, this part of the foam liquid is prone to clumping, which will cause the piston 223 and the partition 110 to stick together, making it more difficult to open the foam liquid valve 1000 later.

[0069] According to the foam liquid valve 1000 provided in this utility model embodiment, by designing the shape of the foam liquid channel 150, when the piston 223 is reset to the blocking position, the first cavity 153 is still retained between the piston 223 and the partition 110. At this time, the foam liquid remaining in the first cavity 153 can permeate and mix with the driving liquid in the liquid passage 140 through the connecting hole 111, thereby diluting the concentration of the foam liquid in the first cavity 153, keeping it at a low concentration and making it difficult to clump, thus avoiding the difficulty of opening the foam liquid valve 1000 later.

[0070] refer to Figure 4 In some specific embodiments of this utility model, the piston 223 is provided with a first through hole 2234 connecting the first cavity 153 and the second cavity 154. The first through hole 2234 can be one, two, or even more. The extension shape of the first through hole 2234 is not limited here; it can be parallel to the connecting rod 222, or it can be set into a curved channel shape. It is not limited here, as long as both ends of the first through hole 2234 connect the first cavity 153 and the second cavity 154 respectively.

[0071] According to the foam liquid valve 1000 provided in this embodiment of the present invention, the first chamber 153 and the second chamber 154 are connected through the first through hole 2234, so that the foam liquid remaining in the second chamber 154 can also permeate and mix with the driving liquid in the liquid passage 140, thereby reducing the concentration of foam liquid in the second chamber 154 and making it difficult to clump. This avoids clumping due to the high concentration of foam liquid in the second chamber 154, which would affect the opening of the foam liquid valve 1000.

[0072] refer to Figure 5 and Figure 6 In some specific embodiments of this utility model, when the piston 223 blocks the inlet 151 and outlet 152, the piston 223 divides the foam liquid channel 150 into a first chamber 153 and a second chamber 154, wherein the first chamber 153 communicates with the connecting hole 111. The piston 223 also has at least a third side 2233, wherein the third side 2233 and the side wall 120 of the foam liquid channel 150 form a second through hole 2235 communicating between the first chamber 153 and the second chamber 154.

[0073] It is understandable that the third side 2233 can be of various shapes, such as a plane that is connected to the first side 2231 and the second side 2232 respectively, or a curved surface, as long as the third side 2233 can form a second through hole 2235 with the side wall 120 of the foam liquid cavity.

[0074] It is understandable that the piston 223 may also include multiple sides, such as a fourth side, thereby forming multiple second through holes 2235 with the side wall 120 of the foam liquid cavity.

[0075] refer to Figure 7 and Figure 8 In some other embodiments of this utility model, a foaming device 2000 is provided, including a foaming component 300 and the foam liquid valve 1000 mentioned above, wherein the foaming component 300 is provided with an air inlet 310.

[0076] The foaming device 2000 also includes a suction pipe 400, on which a first inlet 410, a first flow channel 420 and a first outlet 430 are sequentially arranged. The first inlet 410 can be connected to a water pump to supply water or to other water sources, which is not limited here. The first outlet 430 is connected to the foaming component 300. The first flow channel 420 includes a first equal diameter flow channel 421 and a narrowing flow channel 422. The first equal diameter flow channel 421 is arranged between the narrowing flow channel 422 and the first outlet 430. The end of the narrowing flow channel 422 with a larger diameter is connected to the first inlet 410 and the end with a smaller diameter is connected to the first equal diameter flow channel 421. The peripheral wall of the first equal diameter flow channel 421 is provided with a suction port 424 connected to the foam outlet 152.

[0077] According to the foaming device 2000 provided in this embodiment of the present invention, when water flows from the first inlet 410 through the suction pipe 400, the water flow through the narrowing channel 422 is accelerated, so the water flow velocity entering the first equal diameter channel 421 is high, resulting in the pressure in the first equal diameter channel 421 being less than atmospheric pressure. When the foam liquid valve 1000 is opened, the foam liquid in the foam liquid source is sucked into the first equal diameter channel 421 from the suction port 424 under the action of atmospheric pressure and mixed with the water flow. The mixed water-liquid mixture enters the foaming component 300 through the first outlet 430 and mixes with the gas entering from the air inlet 310 to complete foaming and form foam.

[0078] It is understandable that the suction tube 400 also includes a second equal diameter flow channel 423, the diameter of which is connected to the larger diameter section of the tapered flow channel 422.

[0079] It is understandable that the air inlet can be connected to an air source or to the outside atmosphere, as long as the gas can enter the foaming part 300 through the air inlet; no limitation is made here.

[0080] According to the embodiment of this utility model, the foaming device 2000 fully utilizes the pressure difference formed by water flowing through channels of different diameters to absorb liquid, without the need for an additional liquid pump to drive the foam liquid, which helps to simplify the device structure.

[0081] refer to Figures 7-10 In some specific embodiments of this utility model, the foaming component 300 can be supplied with water flow. Along the water flow direction, the foaming component 300 is sequentially provided with a second inlet 320, a second flow channel 330, and a second outlet 340. The second flow channel 330 is provided with a rectifier 350, and the rectifier 350 is provided with at least one rectifier hole 351. The rectifier hole 351 can be set to 1, 2, 3, or even more, which is not limited here. The total water passage cross-sectional area of ​​the rectifier hole 351 is smaller than the water passage cross-sectional area of ​​the second flow channel 330. The air inlet 310 is provided between the rectifier 350 and the second outlet 340. Since the water passage cross-sectional area of ​​the rectifier hole 351 is smaller than the water passage cross-sectional area of ​​the second flow channel 330, the water flow is accelerated and sprayed out when passing through the rectifier hole 351, and a negative pressure zone is formed near the outlet of the rectifier hole 351. Specifically, the air inlet 310 is connected to the negative pressure zone. Thus, under the action of negative pressure, the external gas enters the second flow channel 330 from the air inlet 310 and mixes with the water flow sprayed from the rectifier hole 351 and the water mixture flowing into the first outlet 430 of the self-suction pipe 400, thereby completing the foaming process.

[0082] According to the embodiment of this utility model, the foaming device 2000 fully utilizes the pressure difference formed by water flowing through channels of different diameters to draw in air, without the need to use an air pump to input gas, which helps to further simplify the device structure.

[0083] refer to Figure 9 In some specific embodiments of this utility model, the foaming component 300 is further provided with a third water inlet 360 and a third water outlet 370, wherein the third water outlet 370 is disposed between the second water inlet 320 and the rectifier 350, the third water inlet 360 is disposed between the second water outlet 340 and the rectifier 350, wherein the third water outlet 370 is connected to the first water inlet 410, and the third water outlet 370 is connected to the first water outlet 430.

[0084] Therefore, part of the water flowing into the foaming component 300 from the second inlet 320 enters the second flow channel 330, and the other part can flow into the suction pipe 400 from the third outlet 370. Thus, only one water source is needed to simultaneously satisfy the water flow in the first flow channel 420 and the second flow channel 330, without the need for an additional water source.

[0085] In some specific embodiments of this utility model, when water flows out from the rectifier hole 351, a negative pressure zone is formed on the side of the rectifier 350 facing away from the second water inlet 320, and the air inlet 310 and the third water inlet 360 are in the negative pressure zone.

[0086] According to the foaming device 2000 provided in this embodiment of the present invention, not only can gas be drawn in by utilizing the pressure difference between the negative pressure zone and the outside, but since the third inlet 360 is also connected to the negative pressure zone, air in the first flow channel 420 is drawn into the negative pressure zone, creating a negative pressure in the first flow channel 420. This negative pressure also affects the third outlet 370, reducing the pressure near the third outlet 370. Therefore, the flow rate of water flowing into the foaming component 300 from the second inlet 320 is greater than that drawn into the third outlet 370, ensuring the flow rate of water and foam liquid entering the suction pipe 400, further ensuring a more thorough water-liquid mixing process. Furthermore, the water-liquid mixture entering the foaming component 300 from the third inlet 360, the gas entering from the air inlet 310, and the gas ejected from the rectifier hole 351 can simultaneously mix in the negative pressure zone, making the mixing and foaming process more thorough and improving the foaming effect.

[0087] refer to Figure 9 In some specific embodiments of this utility model, the third water inlet 360 is correspondingly arranged with the air inlet 310. Specifically, the third water inlet 360 and the air inlet 310 are arranged opposite each other, and the connecting line between them is perpendicular to the first flow channel 420. At this time, the water-liquid mixture flowing out of the third water inlet 360, the gas drawn in from the air inlet 310, and the water flowing out from the rectifier hole 351 directly impact each other, thereby achieving more thorough mixing and agitation.

[0088] 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 element 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.

[0089] 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 at least two, such as two, three, etc., unless otherwise explicitly specified.

[0090] 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.

[0091] 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.

[0092] In the description of this specification, references to terms such as "some specific embodiments" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0093] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A foam liquid valve, characterized in that, include: The valve body is provided with a partition to divide the valve body into a liquid passage and a foam liquid passage. The partition is provided with a connection hole for fluid to pass through. The liquid passage is provided with a liquid inlet hole connected to a driving liquid source. The other end of the liquid inlet hole is provided with a foam inlet and a foam outlet on the foam liquid passage. The foam inlet is used to connect to the foam liquid source, and the foam outlet is used to connect to the foaming device. A switching assembly includes a switching element and an elastic element. The switching element includes a drive block, a connecting rod, and a piston connected in sequence. The connecting rod is slidably disposed in the connecting hole, and the drive block is disposed in the liquid passage with a clearance fit between the drive block and the inner peripheral wall of the liquid passage. The piston is movably disposed in the foam liquid passage for blocking or opening the foam inlet and the foam outlet. The elastic element abuts against the drive block and the partition plate. When the driving liquid flows into the liquid passage, the drive block can compress the elastic element and move under the impact of the driving liquid, so that the piston releases the blockage of the foam inlet and the foam outlet. The connecting rod and the inner peripheral wall of the connecting hole form a flow exchange channel, and the driving liquid enters the foam liquid passage before the foam liquid.

2. The foam liquid valve according to claim 1, characterized in that, The partition plate is provided with an annular rib on the side near the liquid passage. The annular rib is arranged around the connecting hole. In the axial direction of the connecting rod, the projection of the driving block covers the annular rib.

3. The foam liquid valve according to claim 1, characterized in that, The outer peripheral wall of the connecting rod is provided with ribs, which are parallel to the axis of the connecting rod.

4. The foam liquid valve according to claim 1, characterized in that, The valve body includes a bottom wall and a side wall. The foam liquid channel is formed by the partition, the bottom wall and the side wall. The foam liquid channel gradually expands from the partition to the bottom wall so that the foam liquid channel is frustum-shaped. The foam inlet and the foam outlet are provided on the side wall. The piston includes a first side for sealing the foam inlet and a second side for sealing the foam outlet, the shapes of which are adapted to the sidewalls of the foam liquid channel.

5. The foam liquid valve according to claim 4, characterized in that, The diameter of the piston gradually expands from the connecting rod in a direction away from the connecting rod, so that the side shape of the piston is adapted to the side wall of the foam liquid channel. When the piston blocks the foam inlet and the foam outlet, the piston divides the foam liquid channel into a first chamber and a second chamber, and the first chamber is connected to the connecting hole.

6. The foam liquid valve according to claim 5, characterized in that, The piston is provided with a first through hole connecting the first cavity and the second cavity.

7. The foam liquid valve according to claim 4, characterized in that, When the piston blocks the foam inlet and the foam outlet, the piston divides the foam liquid channel into a first chamber and a second chamber, the first chamber being connected to the connecting hole; The piston further includes at least a third side surface, which, together with the side wall, forms a second through hole that connects the first cavity and the second cavity.

8. A foaming device, characterized in that, include: The foaming component and the foam liquid valve as described in any one of claims 1-7, wherein the foaming component is provided with an air inlet, and the foaming device further includes: The suction tube is provided with a first inlet, a first flow channel and a first outlet in sequence. The first outlet is connected to the foaming component. The first flow channel includes a first equal-diameter flow channel and a tapered flow channel. The first equal-diameter flow channel is disposed between the tapered flow channel and the first outlet. The larger diameter end of the tapered flow channel is connected to the first inlet, and the smaller diameter end is connected to the first equal-diameter flow channel. The first equal-diameter flow channel is provided with a suction port connected to the foam outlet.

9. The foaming device according to claim 8, characterized in that, The foaming component is sequentially provided with a second water inlet, a second flow channel, and a second water outlet. A rectifier is provided in the second flow channel, and the rectifier is provided with at least one rectifier hole. The total water passage cross-sectional area of ​​the at least one rectifier hole is smaller than the water passage cross-sectional area of ​​the second flow channel. The air inlet is provided between the rectifier hole and the second water outlet so that when water flows out from the rectifier, air can enter the second flow channel from the air inlet.

10. The foaming device according to claim 9, characterized in that, The foaming component further includes a third water inlet and a third water outlet. The third water outlet is disposed between the second water inlet and the rectifier, and the third water inlet is disposed between the second water outlet and the rectifier. The third water outlet is connected to the first water inlet, and the third water inlet is connected to the first water outlet.

11. The foaming device according to claim 10, characterized in that, When water flows out from the rectifier hole, a negative pressure zone is formed on the side of the rectifier facing away from the second water inlet, and both the air inlet and the third water inlet are in the negative pressure zone.

12. The foaming apparatus according to claim 10 or 11, characterized in that, The connecting line between the air inlet and the third water inlet is perpendicular to the second flow channel.

13. A toilet, characterized in that, include: The foam liquid valve as described in any one of claims 1-7, and / or the foaming device as described in any one of claims 8-12.

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