Foam device and closestool

Abstract

The foam device comprises a water outlet piece, a rectification piece and a liquid suction piece, the water outlet piece is provided with a first water inlet, a first flow channel, a first water outlet, an air suction port, a second water inlet and a second water outlet, the air suction port is formed in the side, opposite to the first water inlet, of the rectification piece, and the second water outlet is formed between the rectification piece and the first water inlet; the second water inlet is formed in one side, back to the first water inlet, of the rectifying part; the rectifying part is arranged in the first flow channel and provided with at least one overflowing hole, the total water passing sectional area of the overflowing hole is smaller than that of the first flow channel, the water inlet end of the liquid suction part is communicated with the second water outlet, the water outlet end of the liquid suction part is communicated with the second water inlet, the second flow channel comprises a first equal-diameter section and a second equal-diameter section, and the diameter of the first equal-diameter section is larger than that of the second equal-diameter section. And a liquid suction port is formed in the second equal-diameter section. Water, liquid and gas can be mixed more sufficiently, the whipping effect is better, equipment such as an impeller is not needed, the device is simple in structure, and miniaturization of the device is facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of toilet, in particular to a foam device and a toilet. BACKGROUND

[0002] Foam devices (such as foam shields) are commonly used in intelligent toilets to generate foam for cleaning the toilet bowl or covering the water seal to prevent odor from escaping and to avoid splashing water from the water seal onto the user during the defecation process. In some prior art, a variable-diameter pipeline is provided in the foam device to change the flow rate of the water flow to generate negative pressure, thereby sucking in gas and foam liquid to achieve mixing and whipping. However, this technology often affects the effect of the generated foam due to poor mixing effect. In some other prior art, an electric motor is used in combination with an impeller to achieve sufficient mixing and whipping effect. However, the use of the electric motor requires high sealing performance of the foam device and makes the overall structure of the foam device more complex, which is not conducive to the miniaturization of the foam device. SUMMARY

[0003] The present application provides a foam device and a toilet, which aims to solve the technical problem that the use of an electric motor and an impeller in the foam device in the prior art leads to a complex structure of the foam device and is not conducive to miniaturization.

[0004] To achieve the above-mentioned purpose, the first aspect of the present application provides a foam device, comprising: a water outlet member comprising a first water inlet, a first flow channel and a first water outlet connected in sequence; a flow regulating member arranged in the first flow channel, wherein at least one flow hole is arranged on the flow regulating member, and the total water passage area of the at least one flow hole is smaller than the water passage area of the first flow channel; wherein the water outlet member further comprises an air inlet, a second water inlet and a second water outlet, the air inlet is arranged on the side of the flow regulating member away from the first water inlet, so that when the water flow flows out of the flow regulating member, the gas can enter the first flow channel from the air inlet, the second water outlet is arranged between the flow regulating member and the first water inlet, and the second water inlet is arranged on the side of the flow regulating member away from the first water inlet; a liquid suction member arranged with a water inlet end, a second flow channel and a water outlet end in the water flow direction, wherein the water inlet end is connected with the second water outlet, the water outlet end is connected with the second water inlet, the second flow channel is arranged with a first constant-diameter section and a second constant-diameter section in the water flow direction, the diameter of the first constant-diameter section is greater than that of the second constant-diameter section, and the second constant-diameter section is arranged with a liquid suction port for connecting with a foam liquid source.

[0005] According to the first aspect of the present application, the gas-water mixing in the first flow channel and the first mixing of the water and liquid in the second flow channel are simultaneously performed, and the gas-water mixture and the water-liquid mixture are mixed again in the first flow channel and whipped. The multiple mixing processes can make the water and liquid mix more fully, and the whipping effect of the mixed gas is better. The dense foam can be formed without using a whipping device such as an impeller. The device structure is simple, and the miniaturization of the device is facilitated. In addition, the liquid suction and gas suction are performed by using the pressure difference formed when the water flow passes through the channels with different diameters during the operation of the device. The liquid pump for sucking the foam liquid or the gas pump for inputting the gas is not needed, and the device structure is further simplified.

[0006] According to some embodiments of the present application, when the water flow flows out from the overflow hole, the side of the flow rectifying member opposite to the first water inlet forms a negative pressure area, and the gas suction port and the second water inlet are both in the negative pressure area.

[0007] According to some embodiments of the present application, the connecting line between the gas suction port and the second water inlet is perpendicular to the first flow channel.

[0008] According to some embodiments of the present application, the first flow channel further comprises a first oscillation cavity, and the first oscillation cavity is arranged between the second water inlet and the second water outlet.

[0009] According to some embodiments of the present application, the second flow channel further comprises a tapered section connected between the water inlet end and the water outlet end, and the hole diameter of the tapered section gradually decreases from the water inlet end to the water outlet end.

[0010] According to some embodiments of the present application, the second flow channel further comprises a second oscillation cavity, and the second oscillation cavity is arranged between the second constant-diameter section and the water outlet end.

[0011] According to some embodiments of the present application, further comprising: a switch valve arranged between the liquid suction member and the foam liquid source, the switch valve comprising a liquid inlet end, a liquid passing cavity and a liquid outlet end, the liquid inlet end being connected with the foam liquid source, the liquid outlet end being connected with the liquid suction port of the liquid suction member, and the foam liquid entering the liquid passing cavity from the liquid inlet end can flow to the liquid suction member from the liquid outlet end; a piston assembly arranged in the liquid passing cavity to control the opening and closing between the liquid inlet end and the liquid outlet end.

[0012] According to some embodiments of the present application, the piston assembly comprises an elastic member and a piston, and the piston comprises a driving plate, a rod portion and a plug head connected in sequence. The switch valve further comprises a water passing cavity, a water inlet hole communicating with a water source is arranged on a side of the water passing cavity away from the liquid passing cavity, a through hole is arranged on a side of the water passing cavity close to the liquid passing cavity, the rod part is slidingly arranged in the through hole, the driving plate is arranged in the water passing cavity, the plug head is arranged in the liquid passing cavity, the elastic member abuts between the driving plate and an inner wall where the through hole is located to provide an elastic force away from the liquid passing cavity to the driving plate, and the plug head closes the liquid passing cavity when the water source is closed.

[0013] According to some embodiments of the present application, the outer peripheral wall of the rod part and the through hole are clearance fit to form a liquid changing channel, and the driving plate and the inner peripheral wall of the water passing cavity are clearance fit.

[0014] According to some embodiments of the present application, an annular protruding rib is arranged on the inner wall of the water passing cavity close to the liquid passing cavity, the annular protruding rib is arranged around the through hole, and a projection of the driving plate covers the annular protruding rib in the axial direction of the rod part.

[0015] A second aspect embodiment of the present application provides a toilet, comprising the above-mentioned foam device.

[0016] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings. Figure 1 An overall schematic view of the foam device provided by an embodiment of the present application is shown; Figure 2 A structural schematic view of the water outlet provided by an embodiment of the present application is shown; Figure 3 A structural schematic view of the liquid suction provided by an embodiment of the present application is shown; Figure 4 A structural schematic view of the rectifier provided by an embodiment of the present application is shown; Figure 5 A structural schematic view of the shell of the switch valve provided by an embodiment of the present application is shown; Figure 6 A structural schematic view of the switch valve provided by an embodiment of the present application is shown; REFERENCE NUMERALS 100, water outlet; 110, first flow channel; 111, first oscillation cavity; 120, first water inlet; 130, second water inlet; 140, air suction port; 150, first water outlet; 160, second water outlet 200, rectifying member; 210, overflow hole; 300, liquid suction member; 310, water inlet end; 320, second flow channel; 321, first constant diameter section; 322, tapered section; 323, second constant diameter section; 324, liquid suction port; 325, second oscillation cavity; 330, water outlet end; 400, on-off valve; 410, liquid passing cavity; 411, liquid inlet end; 412, liquid outlet end; 420, water passing cavity; 421, water inlet hole; 430, partition plate; 431, through hole; 432, liquid changing passage; 433, annular convex rib; 500, piston assembly; 510, piston; 511, driving plate; 512, rod portion; 513, plug head; 520, elastic member. DETAILED DESCRIPTION

[0018] Embodiments of the present application are described in detail below with reference to examples illustrated in the accompanying drawings, in which the same or similar components or components having the same or similar functions are denoted by the same or similar reference numerals throughout. The embodiments described below by reference to the accompanying drawings are exemplary and are intended to explain the present application, and should not be construed as limiting the present application.

[0019] Reference Figure 1 In some embodiments of the present application, a foam device is provided, which can suck in foam liquid and mix, whip and output the foam liquid with water flow and gas to form a dense foam. The foam device can be applied to various different bathroom products, such as a foam manufacturing device of a faucet, shower head, etc., to make foam of soap liquid, disinfectant liquid, etc. for users to clean, can be used as part of a toilet flushing waterway to output foam liquid to clean the inner wall of a toilet ceramic body, and can be used as a component of a foam shield of a toilet to output foam liquid to cover the surface of a water seal to prevent odor from escaping or to prevent splashing water from falling during defecation.

[0020] Reference Figure 1 、 2 , 3, 4, according to some embodiments of the present application, the foam device comprises a water outlet member 100, a rectifying member 200 and a liquid suction member 300.

[0021] The water outlet member 100 is provided with a first water inlet 120, a second water inlet 130, an air inlet 140, a first water outlet 150, a second water outlet 160 and a first flow channel 110. Specifically, the first water inlet 120, the first flow channel 110 and the first water outlet 150 are sequentially communicated.

[0022] The rectifying member 200 is arranged in the first flow channel 110. The rectifying member 200 can be an independent component assembled in the first flow channel 110 of the water outlet member 100, or can be integrally formed with the water outlet member 100. The rectifying member 200 is provided with at least one flow hole 210. Specifically, the number of the flow holes 210 can be one, two, three or more, which is not limited herein. The total water flow cross-sectional area of the flow holes 210 is smaller than the water flow cross-sectional area of the first flow channel 110.

[0023] The air inlet 140 is arranged on the side of the rectifying member 200 opposite to the first water inlet 120. Since the total water flow cross-sectional area of the flow holes 210 is smaller than the water flow cross-sectional area of the first flow channel 110, the water flow rate increases when the water flows from the first flow channel 110 into the flow holes 210. When the water flows through the rectifying member 200 and is sprayed from the flow holes 210, a negative pressure area is formed near the outlet of the flow holes 210. Therefore, the air inlet 140 is located in the negative pressure area, and the external air can be sucked into the first flow channel 110 from the air inlet 140 under the action of the negative pressure. The second water outlet 160 is arranged between the rectifying member 200 and the first water inlet 120, and the second water inlet 130 is arranged on the side of the rectifying member 200 opposite to the first water inlet 120.

[0024] The liquid suction member 300 is sequentially provided with a water inlet end 310, a second flow channel 320 and a water outlet end 330 along the flow direction of the water flowing therein. The water inlet end 310 is in communication with the second water outlet 160, and the water outlet end 330 is in communication with the second water inlet 130. Specifically, the water inlet end 310 and the water outlet end 330 can be directly communicated, or can be communicated through a connecting member such as a hose. Therefore, part of the water flowing into the water outlet member 100 can flow into the liquid suction member 300 from the second water outlet 160, and then reflows into the water outlet member 100 from the second water inlet 130 after flowing through the second flow channel 320 and the water outlet end 330. The second flow channel 320 includes a first constant-diameter section 321 and a second constant-diameter section 323 arranged along the water flow direction. That is, the second constant-diameter section 323 is arranged between the first constant-diameter section 321 and the water outlet end 330. The diameter of the first constant-diameter section 321 is greater than that of the second constant-diameter section 323. The second constant-diameter section 323 is provided with a liquid suction port 324 in communication with a foam liquid source (not shown) provided with foam liquid.

[0025] The working principle and process of the foam device provided by the embodiment will be described below. When the water flows from the first water inlet 120 into the first flow channel 110 and passes through the second water outlet 160, a part of the water flows into the liquid suction member 300 from the second water outlet 160, and the rest continues to flow along the first flow channel 110. The water flowing into the liquid suction member 300 first passes through the first equal-diameter section 321 with a large diameter and then flows into the second equal-diameter section 323 with a small diameter. Due to the decrease in the flow area, the flow rate of the water increases, resulting in a pressure in the second equal-diameter section 323 that is lower than the atmospheric pressure. At this time, the foam liquid in the foam liquid source enters the second equal-diameter section 323 from the liquid suction port 324 under the action of the atmospheric pressure and is mixed with the water flow for the first time. The mixed liquid flows into the first flow channel 110 from the second water inlet 130. On the other hand, the water flow along the first flow channel 110 increases in flow rate after passing through the flow hole 210 of the flow regulating member 200, is sprayed from the flow hole 210 and forms a negative pressure area, the external atmosphere is sucked into the water flow sprayed from the flow hole 210 to form a gas-water mixture, and is mixed with the mixed liquid from the liquid suction member 300 for the second time, and is whipped under the action of the sucked gas, thereby forming a dense foam liquid.

[0026] According to the foam device provided by the embodiment of the present application, the gas-water mixture in the first flow channel 110 is mixed with the water-liquid mixture in the second flow channel 320 at the same time, and the gas-water mixture and the water-liquid mixture are mixed and whipped again in the first flow channel 110. The multiple mixing processes can make the water and liquid be mixed more fully, and the whipping effect of the mixed gas is better, so that a dense foam can be formed without using a whipping device such as an impeller, the structure of the device is simple, and the miniaturization of the device is facilitated. Moreover, the liquid suction and gas suction are completely performed by using the pressure difference formed when the water flow passes through channels with different diameters during the operation of the device, and a liquid pump or a gas pump is not needed to suck the foam liquid or input the gas, thereby further simplifying the structure of the device.

[0027] It can be understood that the second water inlet 130 can be arranged between the negative pressure area and the first water outlet 150. At this time, the mixed liquid from the liquid suction member 300 is not affected by the negative pressure area, and the gas is mixed with the water flowing through the flow regulating member 200 first and then mixed and whipped with the water-liquid mixture flowing out of the second water inlet 130.

[0028] In some specific embodiments of the present application, the second water inlet 130 is arranged adjacent to the water outlet end of the flow regulator 200. Specifically, the second water inlet 130 is arranged in the negative pressure area formed when the water flows out of the flow regulator 200. Thus, a negative pressure is formed at the second water inlet 130, and the air near the side of the second flow channel 320 close to the second water inlet 130 is sucked into the negative pressure area, so that a negative pressure is formed inside the side of the second flow channel 320 close to the second water inlet 130. In this way, the air on the side of the second flow channel 320 away from the second water inlet 130 is also sucked into the negative pressure area under the action of the negative pressure on the other side, so that a negative pressure is formed inside the second flow channel 320, which further affects the second water outlet 160 and reduces the pressure at the second water outlet 160. At this time, the water flow from the first water inlet 120 is greater due to the reduced pressure at the second water outlet 160, which can ensure the water flow and the foam liquid flow into the liquid suction member 300, and further ensure that the water and liquid mixing process is more sufficient. At this time, the water and liquid mixture entering the first flow channel 110 from the second water inlet 130 can be mixed with the gas entering the air inlet 140 and the water flow flowing out of the flow regulator 200 at the same time, and the three are mixed more sufficiently under the action of the gas and the high-speed water flow flowing out of the flow regulator 200, so that the whipping process is also more sufficient, which is beneficial to further improve the effect of whipping to form foam.

[0029] It can be understood that the specific arrangement position of the second water inlet 130 can be various, such as being arranged between the air inlet 140 and the flow regulator 200, or being arranged on the side of the air inlet 140 away from the flow regulator 200, as long as the second water inlet 130 is still in the negative pressure area.

[0030] Reference Figure 2 In some specific embodiments of the present application, the second water inlet 130 is arranged corresponding to the air inlet 140. Here, the "corresponding arrangement" specifically means that the second water inlet 130 is arranged opposite to the air inlet 140, and the connecting line between the two is perpendicular to the first flow channel 110. At this time, the water and liquid mixture flowing out of the second water inlet 130 directly collides with the entering gas and the water flow flowing out of the flow regulator 200, thereby realizing more sufficient mixing and whipping.

[0031] Reference Figure 2 In some specific embodiments of the present application, the first flow channel 110 further comprises a first oscillation cavity 111 arranged between the second water inlet 130 and the first water outlet 150. Thus, the mixture of water, liquid and gas can continuously collide and reflect with the inner wall of the first oscillation cavity 111, so that the mixing and whipping process of the mixture is more sufficient and complete, thereby forming better foam effect.

[0032] Specifically, the first oscillation cavity 111 can refer to the prior art, for example, the first oscillation cavity 111 comprises an inlet, a cavity and an outlet connected in sequence, fluid can enter the cavity from the inlet and then flow out of the outlet, the flow area of the outlet of the first oscillation cavity 111 is smaller than the flow area of the cavity of the first oscillation cavity 111, and the reduction of the outlet enables the mixture of water, liquid and gas to collide and reflect with the inner wall of the first oscillation cavity 111 continuously.

[0033] Reference Figure 3 In some embodiments of the present application, the second flow channel 320 further comprises a tapered section 322, both ends of the tapered section 322 are in communication with the water inlet end 310 and the water outlet end 330 of the liquid suction member 300, and the hole diameter of the tapered section 322 gradually decreases from the water inlet end 310 to the water outlet end 330.

[0034] Therefore, the water flow entering the liquid suction member 300 can be gradually contracted and accelerated from the first constant-diameter section 321 into the second constant-diameter section 323, avoiding the formation of turbulent flow due to the sudden change in diameter when the water flow directly passes from the first constant-diameter section 321 to the second constant-diameter section 323, which affects the normal flow of the water flow and the liquid suction effect.

[0035] Reference Figure 3 In some embodiments of the present application, a second oscillation cavity 325 is further arranged in the second flow channel 320, and the second oscillation cavity 325 is arranged between the second constant-diameter section 323 and the water outlet end 330. Therefore, after the foam liquid is mixed with the water flow in the second constant-diameter section 323, the mixture can collide and reflect with the inner wall of the second oscillation cavity 325 continuously, so that the two are fully mixed.

[0036] Specifically, the second oscillation cavity 325 can refer to the prior art, for example, the second oscillation cavity 325 comprises an inlet, a cavity and an outlet connected in sequence, fluid can enter the cavity from the inlet and then flow out of the outlet, the flow area of the outlet of the second oscillation cavity 325 is smaller than the flow area of the cavity of the second oscillation cavity 325, and the reduction of the outlet enables the mixture of water, liquid and gas to collide and reflect with the inner wall of the second oscillation cavity 325 continuously.

[0037] Reference Figure 1 , 5, 6, in some embodiments of the present application, the foam device further comprises a switch valve 400 and a piston assembly 500, the switch valve 400 is arranged between the liquid suction member 300 and the foam liquid source, specifically, the switch valve 400 comprises a liquid inlet end 411, a liquid passing cavity 410 and a liquid outlet end 412, wherein the liquid inlet end 411 is connected with the foam liquid source, and the liquid outlet end 412 is connected with the liquid suction port 324 arranged on the liquid suction member 300, wherein the above connection can be realized by a hose, or the two ends of the switch valve 400 are directly connected with the foam liquid source and the liquid suction port 324 respectively. Thus, when the switch valve 400 is opened, the foam liquid can enter the liquid passing cavity 410 of the switch valve 400 from the liquid inlet end 411, and flow to the liquid suction port 324 from the liquid outlet end 412. The piston assembly 500 is arranged in the liquid passing cavity 410, and is used to control the opening and closing between the liquid inlet end 411 and the liquid outlet end 412, so as to control whether the foam liquid source outputs foam liquid.

[0038] It can be understood that the switch valve 400 can be controlled in various ways, for example, the driving end of the piston assembly 500 is exposed outside the switch valve 400 and is manually driven by the user, or the driving end is connected with a motor, and the user controls the switch of the motor to control the state of the piston assembly 500.

[0039] According to the embodiments of the present application, the user can select the switch of the foam liquid source by himself, when the user does not need to use the foam function, the switch valve 400 can be selected to be closed, so that the foam device realizes the function of outputting only single water flow, and provides more function selection for the user.

[0040] Reference Figure 5 and Figure 6 , in some embodiments of the present application, the piston assembly 500 comprises an elastic member 520 and a piston 510, the elastic member 520 can be a spring, the piston 510 comprises a driving plate 511, a rod part 512 and a plug head 513 connected in sequence, the driving plate 511, the rod part 512 and the plug head 513 can be integrally formed, or can be separately arranged and assembled by splicing to form the piston 510, which is not limited here.

[0041] The switch valve 400 is further provided with a water passing cavity 420, that is, the water passing cavity 420 and the liquid passing cavity 410 are both arranged in the switch valve 400, and the water passing cavity 420 and the liquid passing cavity 410 are separated by the partition plate 430 extending out of the switch valve 400. The water passing cavity 420 is provided with a water inlet hole 421 communicating with a water source on the side away from the liquid passing cavity 410, and the water passing cavity 420 is provided with a through hole 431 on the side close to the liquid passing cavity 410, that is, the through hole 431 is arranged on the partition plate 430. When the piston assembly 500 is arranged in the switch valve 400, the rod portion 512 is arranged in the through hole 431 and can slide relative to the through hole 431. At this time, the driving plate 511 is arranged in the water passing cavity 420, the plug head 513 is arranged in the liquid passing cavity 410, and the elastic member 520 is abutted between the driving plate 511 and the inner wall of the through hole 431, that is, the elastic member 520 is abutted between the driving plate 511 and the partition plate 430, thereby providing the driving plate 511 with an elastic force away from the liquid passing cavity 410. When the water source is closed and no water flows into the water passing cavity 420 through the water inlet hole 421, the driving plate 511 tends to move away from the liquid passing cavity 410 under the action of the elastic force of the elastic member 520, thereby driving the piston 510 to move, so that the plug head 513 moves to the position where the side wall of the plug head 513 blocks the liquid inlet end 411 and the liquid outlet end 412, so as to close the liquid passing cavity 410.

[0042] Therefore, the user can control the opening and closing of the water source. When it is needed to open the switch valve 400, the water source can be opened, water flows into the water passing cavity 420 through the water inlet hole 421, and the driving plate 511 is driven to move against the elastic force of the spring, thereby driving the plug head 513 to move through the rod portion 512, so that the side wall of the plug head 513 no longer blocks the liquid inlet end 411 and the liquid outlet end 412, thereby conducting the liquid passing cavity 410 and opening the switch valve 400. At this time, if the liquid suction member 300 has water flow, the foam liquid can flow to the liquid suction member 300 through the switch valve 400. If the user only needs to output clean water, the water source is closed, and after losing the water pressure of the water source, the driving plate 511 is reset under the action of the elastic force of the spring, driving the plug head 513 to move until the side wall of the plug head 513 blocks the liquid inlet end 411 and the liquid outlet end 412 again, so as to close the switch valve 400.

[0043] Reference Figure 5 and Figure 6 In some specific embodiments of the present application, the outer peripheral wall of the rod portion 512 and the through hole 431 are in clearance fit. It can be understood that the liquid changing channel 432 is formed between the outer peripheral wall of the rod portion 512 and the inner wall of the through hole 431, the liquid changing channel 432 connects the water passing cavity 420 and the liquid passing cavity 410, and the driving plate 511 and the inner peripheral wall of the water passing cavity 420 are also in clearance fit. The water flowing from the water inlet hole 421 can flow to the side of the driving plate 511 away from the water inlet hole 421.

[0044] According to the specific embodiments of the present application, when the water flow enters the water passing cavity 420 to move the driving plate 511 and the plug 513, part of the water flow also enters the liquid passing cavity 410 through the liquid replacing passage 432. The water flow entering the liquid passing cavity 410 can soak the inner wall of the liquid passing cavity 410 when the plug 513 opens the switch valve 400, thereby avoiding the foam liquid adhering to the inner wall of the liquid passing cavity 410 when the foam liquid directly enters the liquid passing cavity 410, which is difficult to clean and affects the movement of the piston 510. Moreover, when the water source is closed and the plug 513 resets to close the switch valve 400, the foam liquid molecules remaining in the liquid passing cavity 410 can be squeezed or diffused by the plug 513, enter the water passing cavity 420 through the liquid replacing passage 432, thereby expelling or diluting the foam liquid molecules remaining in the liquid passing cavity 410, avoiding caking in the liquid passing cavity 410 and affecting the subsequent use of the switch valve 400.

[0045] Reference Figure 5 and Figure 6 In some specific embodiments of the present application, the water passing cavity 420 extends a ring-shaped protruding rib 433 surrounding the through hole 431 on the inner wall of the liquid passing cavity 410. It can be understood that the ring-shaped protruding rib 433 is arranged on the partition plate 430, and the ring-shaped protruding rib 433 can be arranged to extend substantially in the direction close to the water inlet hole 421, and in the axial direction of the rod portion 512, the projection of the driving plate 511 covers the ring-shaped protruding rib 433.

[0046] Due to the arrangement of the spring, the driving plate 511 cannot be moved to completely fit the inner wall of the liquid passing cavity 410 to close the through hole 431, so during the opening of the switch valve 400, the water flow will always enter the liquid passing cavity 410 through the liquid replacing passage 432, and the water pressure of the water flow will increase the pressure of the liquid passing cavity 410, thereby affecting the entry of the foam liquid at the liquid inlet end 411, and even the water flow will flow from the liquid inlet end 411 to the foam liquid source, polluting the foam liquid.

[0047] In specific embodiments of the present application, by arranging the ring-shaped protruding rib 433, when the driving plate 511 moves in the direction close to the liquid passing cavity 410 to compress the ring-shaped protruding rib 433, the water flow can be blocked from flowing through the liquid replacing passage 432, thereby avoiding the continuous influence of the water flow on the liquid passing process. It can be understood that before the driving plate 511 moves to block the water flow, part of the water flow has already entered the liquid passing cavity 410 from the liquid replacing passage 432, so the soaking effect of the liquid passing cavity 410 can still be achieved.

[0048] In the description of this invention, 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," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0049] 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 invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0050] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," 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 invention according to the specific circumstances.

[0051] 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.

[0052] 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 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.

[0053] While embodiments of the application have been shown and described, it is to be understood that the application is not limited to the details of the embodiments described, since the scope of the application will be defined with respect to the claims and their equivalents.

Claims

1. A foam device, characterized in that, include: The water outlet component includes a first water inlet, a first flow channel, and a first water outlet connected in sequence. A rectifier is disposed in the first flow channel, and the rectifier is provided with at least one flow hole, wherein the total water flow cross-sectional area of ​​at least one flow hole is smaller than the water flow cross-sectional area of ​​the first flow channel. The water outlet further includes an air intake, a second water inlet, and a second water outlet. The air intake is located on the side of the rectifier facing away from the first water inlet, so that when water flows out of the rectifier, gas can enter the first flow channel from the air intake. The second water outlet is located between the rectifier and the first water inlet, and the second water inlet is located on the side of the rectifier facing away from the first water inlet. The liquid suction device is provided with an inlet end, a second flow channel and an outlet end along the water flow direction. The inlet end is connected to the second outlet, and the outlet end is connected to the second inlet. The second flow channel is provided with a first equal diameter section and a second equal diameter section along the water flow direction. The diameter of the first equal diameter section is larger than that of the second equal diameter section. The second equal diameter section is provided with a liquid suction port for connecting to a foam liquid source.

2. The foam device according to claim 1, characterized in that, When water flows out of the flow hole, a negative pressure zone is formed on the side of the rectifier facing away from the first water inlet, and both the air intake and the second water inlet are in the negative pressure zone.

3. The foam device according to claim 1 or 2, characterized in that, The connection line between the air intake and the second water inlet is perpendicular to the first flow channel.

4. The foam device according to claim 1, characterized in that, The first flow channel further includes a first oscillation chamber, which is disposed between the second inlet and the first outlet.

5. The foam device according to claim 1, characterized in that, The second flow channel further includes a tapering section connecting the inlet end and the outlet end, wherein the aperture of the tapering section gradually decreases from the inlet end to the outlet end.

6. The foam device according to claim 1, characterized in that, Also includes: A switching valve is disposed between the liquid suction element and the foam liquid source. The switching valve includes an inlet end, a liquid passage chamber and an outlet end. The inlet end is connected to the foam liquid source and the outlet end is connected to the liquid suction port of the liquid suction element. The foam liquid can enter the liquid passage chamber from the inlet end and then flow to the liquid suction element from the outlet end. A piston assembly is disposed in the liquid passage chamber to control the opening and closing between the liquid inlet and the liquid outlet.

7. The foam device according to claim 6, characterized in that, The piston assembly includes an elastic element and a piston, the piston including a drive plate, a rod and a plug connected in sequence; The switching valve further includes a water passage chamber, on the side of the water passage chamber facing away from the liquid passage chamber, an inlet hole for communicating with a water source is provided, and a through hole is provided on the side of the water passage chamber near the liquid passage chamber. The rod is slidably disposed in the through hole, and the drive plate is disposed in the water passage chamber. The plug is disposed in the liquid passage chamber. The elastic element abuts against the inner wall between the drive plate and the through hole to provide elastic force to the drive plate away from the liquid passage chamber. When the water source is turned off, the plug closes the liquid passage chamber.

8. The foam device according to claim 7, characterized in that, The outer peripheral wall of the rod and the inner wall of the through hole are fitted with a clearance to form a liquid exchange channel; the drive plate and the inner peripheral wall of the water passage cavity are fitted with a clearance.

9. The foam device according to claim 8, characterized in that, An annular rib is provided on the inner wall of the water passage cavity near the liquid passage cavity. The annular rib surrounds the through hole, and the projection of the drive plate covers the annular rib in the axial direction of the rod.

10. A toilet, characterized in that, Includes the foam device as described in any one of claims 1-9.

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