Drainage structure, cleaning device and method for controlling the proportion of liquids

Abstract

The application provides a drainage structure, a cleaning device and a method for controlling liquid proportioning. The drainage structure comprises a plurality of cavities, each of which comprises a water inlet, a water outlet and a venting port arranged between the water inlet and the water outlet; a collecting pipe, the water outlets of the plurality of cavities being in communication with the collecting pipe; a driving assembly comprising a driving motor and a driving member, the driving member being configured to be driven by the driving motor to reciprocate between the plurality of cavities; and an elastic waterproof membrane, the elastic waterproof membrane being arranged at the venting port and located in a movement path of the driving member, the driving member reciprocating to compress or stretch the elastic waterproof membrane, so that the elastic waterproof membrane has a compressed state and a stretched state. The drainage structure of the application has good drainage continuity and can realize proportioning of different solutions, meet more use scenarios, is not prone to blockage during long-time use and has good use experience.

Description

Technical Field

[0001] This invention relates to the field of cleaning appliances, and more particularly to drainage structures, cleaning equipment, and methods for controlling liquid ratios. Background Technology

[0002] As people's work pace accelerates and their living standards continue to rise, they are increasingly accustomed to using smart cleaning appliances to replace manual labor in tasks such as sweeping, vacuuming, and mopping. Among these, new intelligent robot vacuums and mops are particularly popular.

[0003] Cleaning equipment, such as robotic vacuum cleaners and floor scrubbers, features functions like temporary wastewater collection, storage, and automatic discharge. An internal pump discharging the wastewater into the sewer system significantly enhances the user experience. However, existing cleaning equipment suffers from complex internal drainage pipe structures, and most can only draw in one type of liquid, unable to simultaneously draw in and mix two. Furthermore, when used for wastewater discharge, the wastewater is directly discharged through the pump, which, over time, can become clogged or entangled with hair, affecting drainage efficiency.

[0004] In view of this, it is indeed necessary to provide a drainage structure, cleaning equipment, and a method for controlling the liquid ratio to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a drainage structure that is simple in structure and has high drainage efficiency.

[0006] To achieve the above objectives, the present invention provides a drainage structure for use in cleaning equipment, comprising:

[0007] Multiple cavities, each cavity including an inlet, an outlet, and a vent disposed between the inlet and the outlet;

[0008] The manifold is connected to the outlets of the plurality of cavities;

[0009] A drive assembly includes a drive motor and a drive element, the drive element being configured to be driven by the drive motor to reciprocate between the plurality of cavities;

[0010] An elastic waterproof membrane is disposed at the vent and within the movement path of the drive member. The drive member reciprocates to compress or stretch the elastic waterproof membrane, so that the elastic waterproof membrane has a compressed state and a stretched state.

[0011] As a further improvement of the present invention, the elastic waterproof membrane is fixedly installed at the vent and sealed to the vent. The driving member is fixedly connected to the elastic waterproof membrane. During the reciprocating motion, the driving member changes the state of the elastic waterproof membrane so that the elastic waterproof membrane switches between a compressed state and a stretched state.

[0012] As a further improvement of the present invention, the driving member includes a connecting portion and a connecting arm extending from the connecting portion to each vent, the connecting arm being fixedly connected to the elastic waterproof membrane.

[0013] As a further improvement of the present invention, the driving assembly includes an eccentric device, which is rotatably connected to the driving motor. The eccentric device is provided with a protrusion, and the connecting part is a strip-shaped hole. The protrusion is inserted into the strip-shaped hole. The driving motor rotates to drive the eccentric device to rotate, thereby driving the driving component to reciprocate. The eccentricity of the eccentric device can be changed by adjusting the position of the protrusion on the eccentric device.

[0014] As a further improvement of the present invention, the manifold includes multiple inlets and one outlet. The inlets are respectively connected to the outlets of the multiple cavities. The liquid in the cavities is mixed by the manifold and then flows out through the outlet.

[0015] As a further improvement of the present invention, each inlet is provided with a first one-way valve, each outlet is provided with a second one-way valve, and the outlet of the manifold is provided with a third one-way valve. The first one-way valve, the second one-way valve, and the third one-way valve are installed in the same direction and are configured to allow liquid to flow in from the inlet and out from the outlet.

[0016] As a further improvement of the present invention, the drainage structure includes a first cavity and a second cavity, the first cavity includes a first vent, the second cavity includes a second vent, both the first vent and the second vent are fixedly connected to the elastic waterproof membrane, and the driving member is configured to reciprocate between the first cavity and the second cavity.

[0017] As a further improvement of the present invention, when the elastic waterproof membrane at the first vent is in a compressed state, the elastic waterproof membrane at the second vent is in a stretched state; when the elastic waterproof membrane at the first vent is in a stretched state, the elastic waterproof membrane at the second vent is in a compressed state.

[0018] As a further improvement of the present invention, the movement path of the drive rod is a straight line, and an outer cover is connected to the first vent and the second vent respectively. A connection port is provided on the side of the outer cover near the drive member, and the connecting arm passes through the connection port to connect with the elastic waterproof membrane.

[0019] As a further improvement of the present invention, the driving component includes a swing arm, the swing arm having a rotation center, and the driving motor drives the swing arm to perform reciprocating circular arc motion around the rotation center as the axis.

[0020] Another object of the present invention is to provide a cleaning device having the above-described drainage structure.

[0021] To achieve the above objectives, the present invention provides a cleaning device including the drainage structure described above.

[0022] Another object of the present invention is to provide a method for controlling the liquid ratio.

[0023] To achieve the above objectives, the present invention provides a method for controlling liquid ratio, applied to the aforementioned cleaning equipment. The cleaning equipment includes a manifold, multiple cavities, and a driving component. Each cavity includes an inlet, an outlet, and a vent disposed between the inlet and the outlet. The method includes:

[0024] During the reciprocating motion cycle, when the driving component moves away from the first partial cavity, the first partial cavity is in a water-absorbing state. The inlet of the first partial cavity draws in the i-th type of liquid with a volume of Vi from the outside, where i = {1, ..., n} and n is the total number of the first partial cavities. The second partial cavity discharges the j-th type of liquid with a volume of Vj to the manifold through the outlet, where j = {1, ..., m} and m is the total number of the second partial cavities.

[0025] When the driving component moves toward the first partial cavity, the first partial cavity is in a drainage state. The outlet of the first partial cavity discharges a volume of the i-th type of liquid, Vi, into the manifold, where i = {1, ..., n} and n is the total number of the first partial cavities. The second partial cavity draws in a volume of the j-th type of liquid, Vj, from the outside through the inlet, where j = {1, ..., m} and m is the total number of the second partial cavities.

[0026] Repeat the above steps until the cycle stops, and output the mixed solution in the manifold to the cleaning device.

[0027] As a further improvement of the present invention, the cleaning device includes a first cavity and a second cavity. The volume of the first liquid drawn in by the first cavity is V1 = 1 / 3 * (S * h1), where S is the area of ​​the elastic waterproof membrane and h1 is the stroke of the elastic waterproof membrane of the first cavity. The volume of the second liquid drawn in by the second cavity is V2 = 1 / 3 * (S * h2), where h2 is the stroke of the elastic waterproof membrane of the second cavity.

[0028] As a further improvement of the present invention, the drainage structure includes an eccentric device with an eccentricity of R, where 2R = h1 + h2. By changing the eccentricity of the eccentric device, the volume V1 of the first liquid drawn into the first cavity and the volume V2 of the second liquid drawn into the second cavity can be changed.

[0029] As a further improvement of the present invention, the concentration of the first liquid in the mixed solution is C = V1*N / (V1*N+V2*N)*100% = h1 / (h1+h2).

[0030] The beneficial effects of this invention are as follows: Compared with the prior art, the drainage structure of this invention is relatively simple. The inlet is connected to the outlet through the cavity. An elastic waterproof membrane is provided on one side of the cavity. The state of the elastic waterproof membrane in each cavity is changed by the reciprocating motion of the driving component in the driving assembly between the cavities, thereby changing the volume of each cavity. The pressure in the cavity changes with the volume change, realizing the function of sucking liquid from the outside into the cavity and discharging liquid from the cavity to the outside. It has high transmission efficiency, more stable structure, and can mix different kinds of liquids. Moreover, the elastic waterproof membrane is set at the vent of the cavity, so even with long-term use, it can avoid the drainage structure from being blocked or tangled with hair during sewage discharge, requiring no frequent maintenance and providing a better user experience. Attached Figure Description

[0031] Figure 1 This is a three-dimensional structural diagram of the drainage structure according to a preferred embodiment of the present invention.

[0032] Figure 2 yes Figure 1 A sectional view.

[0033] Figure 3 This is a cross-sectional view of the elastic waterproof membrane of the first cavity when it is under compression.

[0034] Figure 4 This is a cross-sectional view of the elastic waterproof membrane of the second cavity when it is under compression.

[0035] Figure 5 yes Figure 1 A three-dimensional structural diagram of the drive component.

[0036] Figure 6 yes Figure 1 A three-dimensional structural diagram of a medium-elasticity waterproof membrane.

[0037] Figure 7 yes Figure 1 A three-dimensional structural diagram of the driving component.

[0038] Figure 8 yes Figure 1 A three-dimensional structural diagram of a one-way valve.

[0039] Figure 9 This is a cross-sectional view of a drainage structure according to another embodiment of the present invention.

[0040] Figure 10 yes Figure 9 A three-dimensional structural diagram of the driving component.

[0041] Figure 11 This is a schematic diagram of a drainage structure according to a preferred embodiment of the present invention. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0043] It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and / or processing steps closely related to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0044] Additionally, it should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0045] Please see Figures 1 to 8 As shown, a preferred embodiment of the present invention is a drainage structure 100. The drainage structure 100 is applied in a cleaning device (not shown) or a base station (not shown). The cleaning device can be a floor scrubber, a sweeper, or other commercially available cleaning device that requires water pumping and drainage.

[0046] Multiple chambers 10, each chamber 10 including an inlet 111, an outlet 112 and a vent 13 disposed between the inlet 111 and the outlet 112;

[0047] The manifold 30 and the outlets 112 of the multiple cavities 10 are all connected to the manifold 30;

[0048] The drive assembly 50 includes a drive motor 51 and a drive element 52, the drive element 52 being driven by the drive motor 51 to reciprocate between a plurality of cavities 10.

[0049] An elastic waterproof membrane 40 is disposed at the vent 13 and located within the movement path of the drive member 52. The drive member 52 reciprocates to compress or stretch the elastic waterproof membrane 40, so that the elastic waterproof membrane 40 has a compressed state and a stretched state.

[0050] In this embodiment, the driving member 52 reciprocates between multiple cavities 10. When the driving member 52 moves into one of the cavities 10, the elastic waterproof membrane 40 at the vent 13 of that cavity 10 is compressed, reducing the volume of the cavity 10 and increasing the air pressure. The liquid temporarily stored in the cavity 10 flows out through the outlet 112 to the manifold 30. Simultaneously, the elastic waterproof membrane 40 of another cavity 10 is stretched, increasing the volume of this cavity 10 and decreasing the air pressure. The liquid in this cavity 10 flows out through the inlet 111. The process of absorbing liquid is repeated by the reciprocating motion of the drive component 52. Multiple chambers 10 respectively draw in and discharge different types of liquids, which are then mixed in the manifold 30 and discharged into the cleaning equipment for use. The reciprocating movement of the drive component 52 changes the state of the elastic waterproof membrane 40, thereby changing the volume of the multiple chambers 10 and completing the functions of drawing in and discharging liquid. Only a few parts are needed to drive the drainage structure 100 through a mechanical structure to achieve the function of drawing in and discharging liquid. It is less prone to failure and has a longer service life.

[0051] The elastic waterproof membrane 40 is fixedly installed at the vent 13 and sealed to the vent 13. The drive component 52 is fixedly connected to the elastic waterproof membrane 40 at the vent 13. During the reciprocating motion, the drive component 52 changes the state of the elastic waterproof membrane 40 so that the elastic waterproof membrane 40 switches between a compressed state and a stretched state. The drive component 52 only reciprocates to compress / stretch the elastic waterproof membrane 40, and the connection position between the elastic waterproof membrane 40 and the vent 13 does not change. In this way, even after a long period of use, sewage (including particulate matter, hair and other impurities) in the cavity 10 will not enter the space where the drive component 52 is located. The sewage flows directly from the inlet 111 of the cavity 19 to the outlet 112, avoiding the drainage structure 100 from being blocked or entangled by hair during the sewage discharge process, improving the sewage discharge effect, extending the service life of the drainage structure 100, and improving the user experience.

[0052] The drive unit 52 includes a connecting part 521 and a connecting arm 522 extending from the connecting part 521 to each vent 13. The connecting arm 522 is fixedly connected to the elastic waterproof membrane 40. The connecting arm 522 drives the elastic waterproof membrane 40 at the vent 13 of each cavity 10 to switch between a compressed state and a stretched state. Depending on the different requirements for the proportion of liquid in each cavity 10 in the mixed solution, the length of the connecting arm 522 connected to it can be changed as needed. In this way, the degree of compression and stretching of the elastic waterproof membrane 40 in each cavity 10 is different each time, so the volume of liquid sucked into each cavity 10 is also different, which can meet more usage needs.

[0053] The drive assembly 50 includes an eccentric device 53, which is rotatably connected to the drive motor 51. The eccentric device 53 is at least partially inserted into the connecting portion 521. The rotation of the motor drives the eccentric device 53 to rotate, thereby driving the drive component 52 to reciprocate. In this embodiment, the eccentric device 53 can be an eccentric wheel; in other embodiments, it can also be other structural components, and the present invention does not limit this.

[0054] The eccentric device 53 has a protrusion 531 and a connecting part 521 that is a strip-shaped hole. The protrusion 531 is inserted into the strip-shaped hole. By adjusting the position of the protrusion 531 on the eccentric device 53, the eccentricity of the eccentric device 53 can be changed. With the rotation of the drive motor 51, the protrusion 531 on the eccentric device 53 will be displaced relative to the strip-shaped hole and drive the drive component 52 to reciprocate, thereby compressing and stretching the elastic waterproof membrane 40. The structure is simple and the assembly is relatively convenient.

[0055] The manifold 30 includes multiple inlets and one outlet 31. The inlets are connected to the outlets 112 of each cavity 10. The liquid discharged from each cavity 10 is mixed through the manifold 30 and then flows out through the outlet 31.

[0056] The inlet 111 is equipped with a first check valve 61, the outlet 112 is equipped with a second check valve 62, and the outlet 31 of the manifold 30 is equipped with a third check valve 63. The first check valve 61, the second check valve 62 and the third check valve 63 are installed in the same direction and are configured to allow liquid to flow in from the inlet 111 and flow out from the outlet 31.

[0057] When the elastic waterproof membrane 40 of the cavity 10 is in a compressed state, the first one-way valve 61 of the cavity 10 is in a closed state and the second one-way valve 62 is opened. At this time, the liquid flows into the manifold 30 through the outlet 112. When the elastic waterproof membrane 40 in the cavity 10 is in a stretched state, the first one-way valve 61 is opened and the second one-way valve 62 is in a closed state. The liquid is drawn into the cavity 10 and temporarily stored.

[0058] In this embodiment, the first check valve 61, the second check valve 62, and the third check valve 63 are all duckbill valves. The duckbill valve is made of silicone and includes an annular mounting portion 611 and a flat valve port 612 connected to the annular mounting portion 611. The annular mounting portion 611 is used to install the duckbill valve on the inlet 111, the outlet 112, and the output port 31. The flat valve port 612 restricts the flow direction of the water. In other embodiments, other types of check valves can be used, as long as they have a one-way flow function; this invention does not impose any limitations on this.

[0059] The elastic waterproof membrane 40 is a deformable elastic diaphragm that can be compressed by the drive member 52 to undergo elastic deformation. The elastic waterproof membrane 40 includes an annular edge 42 and a central portion 43 protruding outward from the annular edge 42.

[0060] In some embodiments, the drainage structure 100 includes a first cavity 11 and a second cavity 12. The first cavity 11 includes a first vent 131, and the second cavity 12 includes a second vent 132. Both the first vent 131 and the second vent 132 are fixedly connected to the elastic waterproof membrane 40. The driving member 52 is configured to reciprocate between the first cavity 11 and the second cavity 12. When the elastic waterproof membrane 40 at the first vent 131 is in a compressed state, the elastic waterproof membrane 40 at the second vent 132 is in a stretched state; when the elastic waterproof membrane 40 at the first vent 131 is in a stretched state, the elastic waterproof membrane 40 at the second vent 132 is in a compressed state.

[0061] Furthermore, the drive rod moves along a straight line. An outer cover 70 is connected to the vent. The end of the outer cover 70 near the drive component 52 has a connection port. The connecting arm 522 passes through the connection port and connects to the elastic waterproof membrane 40. The inner diameter of the connection port is the same as that of the connecting arm 522. The connecting arm 522 passes through the connection port and is restricted to moving only along the straight line where the axes of the two connection ports are located, without any deviation.

[0062] like Figures 9-10 As shown, in some embodiments, the driving member 52' ​​includes a rocker arm 523, which has a rotation center and performs reciprocating circular arc motion around the rotation center. The driving motor 51 drives the rocker arm 523 to perform reciprocating circular arc motion around the rotation center, and the movement path of the driving member 52' ​​is arc-shaped.

[0063] The driving component 52' moves in a swinging manner via the swing arm 523. The length of the swing arm 523 can be set according to the actual structure and needs. The swing arm 523, which is connected to the swing arm connecting part 521 on the connecting frame 80, is more energy-efficient during use. The drive motor 51 only needs a small rotation to drive the driving component 52' to swing in a large amplitude. Moreover, through the swinging motion, the swing speed of the driving component 52' can be controlled more precisely, thereby better controlling the flow rate in the cavity of the drainage structure 100 and controlling the working efficiency of the drainage structure 100.

[0064] The drainage structure 100 also includes a connecting frame 80, one end of which is provided with a rocker arm connecting part 521. The rocker arm 523 is connected to the rocker arm connecting part 521 and performs a reciprocating circular arc motion with the rocker arm connecting part 521 as the axis.

[0065] Figure 11 In a specific embodiment of the drainage structure 100 of the present invention, multiple cavities 10 are provided on both sides of the driving member 52. The driving member 52 reciprocates left and right. When the driving member 52 moves to the right, that is... Figure 11 In the current state, the elastic waterproof membrane 40 of the multiple cavities 10 on the right side is in a compressed state, the volume of the right cavity 10 decreases, and the right cavity 10 discharges liquid into the manifold 30 through the outlet 112. At the same time, the elastic waterproof membrane 40 of the multiple cavities 10 on the left side is in a stretched state, the volume of the left cavity 10 increases, and the left cavity 10 draws in liquid from the outside through the inlet 111 and temporarily stores it therein. When the driving component moves to the left, the elastic waterproof membrane 40 of the multiple cavities 10 on the left side is in a compressed state, the volume of the left cavity 10 decreases, and the left cavity 10 discharges liquid into the manifold 30 through the outlet 112. At the same time, the elastic waterproof membrane 40 of the multiple cavities 10 on the right side is in a stretched state, the volume of the right cavity 10 increases, and the right cavity 10 draws in liquid from the outside through the inlet 111 and temporarily stores it therein.

[0066] The present invention also provides a method for controlling the liquid ratio, the method specifically comprising:

[0067] During the reciprocating motion cycle, when the driving component moves away from the first cavity, the first cavity is in a water-absorbing state. The inlet of the first cavity draws in the i-th type of liquid with a volume of Vi from the outside, where i = {1, ..., n} and n is the total number of the first cavity. The second cavity discharges the j-th type of liquid with a volume of Vj into the manifold through the outlet, where j = {1, ..., m} and m is the total number of the second cavity.

[0068] When the driving component moves toward the direction of the first cavity, the first cavity is in a drainage state. The outlet of the first cavity discharges the i-th type of liquid with a volume of Vi into the manifold, where i = {1, ..., n} and n is the total number of the first cavities. The second cavity draws in the j-th type of liquid with a volume of Vj from the outside through the inlet, where j = {1, ..., m} and m is the total number of the second cavities.

[0069] Repeat the above steps until the circulation stops, then output the mixed solution in the manifold to the cleaning equipment.

[0070] In some embodiments, the cycle stopping condition may be that the corresponding input liquid volume in each cavity 10 reaches a preset value. In other embodiments, the cycle stopping condition may also be that the volume of the mixed solution in the manifold 30 reaches a preset value. The cycle stopping condition can be set according to the actual situation, and the present invention does not limit it.

[0071] The area of ​​the elastic waterproof membrane 40 is S. When the drainage structure 100 includes a first cavity 11 and a second cavity 12, the stroke of the elastic waterproof membrane 40 connected to the first vent 131 of the first cavity 11 is h1, and the stroke of the elastic waterproof membrane 40 connected to the second vent 132 of the second cavity 12 is h2. Therefore, the volume of liquid absorbed by the first cavity 11 in a single operation is V1 = 1 / 3 * (S * h1), and the volume of liquid absorbed by the second cavity 12 in a single operation is V2 = 1 / 3 * (S * h2). The concentration of the first liquid in the first cavity 11 in the mixed solution in the manifold 30 is C = V1 * N / (V1 * N + V2 * N) * 100% = h1 / (h1 + h2). The eccentricity of the eccentric device 53 is R, so 2R = h1 + h2. Therefore, by changing the eccentricity of the eccentric device 53 or the length of the connecting arm 522, the final concentration of the mixed solution can be changed.

[0072] The specific working principle of the drainage structure 100 of the present invention is as follows:

[0073] When used to absorb cleaning fluid, the drive unit 52 reciprocates between the first cavity 11 and the second cavity 12. When the drive unit 52 moves towards the first cavity 11, the elastic waterproof membrane 40 at the first vent 131 of the first cavity 11 is compressed, reducing the volume of the first cavity 11 and increasing the air pressure inside. The first liquid, with a temporary volume of V1, stored in the first cavity 11 flows out through the outlet 112 into the manifold 30. Simultaneously, the second cavity 12... When the elastic waterproof membrane 40 is stretched, the volume of the second cavity 12 increases, the air pressure inside the second cavity 12 decreases, and the second cavity 12 absorbs a second solution of volume V2 from the outside through the inlet 111. When the driving component 52 moves towards the second cavity 12, the elastic waterproof membrane 40 of the second cavity 12 is compressed, the volume of the second cavity 12 decreases, the air pressure inside the second cavity 12 increases, and the second solution of volume V2 temporarily stored inside the second cavity 12... Liquid flows out through outlet 112 into manifold 30. Simultaneously, the elastic waterproof membrane 40 of the first cavity 11 is stretched, increasing the volume of the first cavity 11 and decreasing the air pressure inside. The first cavity 11 absorbs a volume of liquid V1 from the outside through inlet 111. The above process is repeated N times by the reciprocating motion of the drive component 52. The first cavity 11 and the second cavity 12 respectively draw in different types of liquids, which are then mixed in the manifold 30 to obtain a mixed liquid, which is then discharged into the cleaning equipment for use. The reciprocating movement of the drive component 52 changes the state of the elastic waterproof membrane 40, thereby changing the volume of the first cavity 11 and the second cavity 12, completing the functions of liquid suction and discharge. After mixing the liquid in the manifold 30, it is discharged outward. Only a few parts are needed to drive the drainage structure 100 through a mechanical structure to achieve the function of liquid suction and discharge, making it less prone to failure and with a longer service life.

[0074] The drainage structure 100 can also be used to absorb sewage. An inlet pipe (not shown) is installed on the inlet 111. The inlet pipe is connected to the cleaning equipment through the inlet. During the reciprocating motion of the drive component 52, when the first chamber 11 sucks up sewage through the inlet pipe, the second chamber 12 discharges sewage outward through the outlet 112 and the manifold 30. When the second chamber 12 sucks up sewage through the inlet pipe, the first chamber 11 discharges sewage outward through the outlet 112 and the manifold 30. This ensures the continuity of water pumping and drainage, bringing a smooth user experience.

[0075] In summary, in the drainage structure 100 of the present invention, the inlet 111 is connected to the outlet 112 through the cavity 10. An elastic waterproof membrane 40 is provided on one side of the cavity 10. The reciprocating motion of the drive member 52 in the drive assembly 50 between the cavities 10 changes the state of the elastic waterproof membrane 40 in each cavity 10, thereby changing the volume of each cavity 10. The pressure inside the cavity 10 changes with the volume change, realizing the function of sucking liquid into the cavity 10 from the outside and discharging liquid from the cavity 10 to the outside. It has high transmission efficiency, more stable structure, and can achieve mixing of different types of liquids. Moreover, the elastic waterproof membrane 40 is set at the vent 13 of the cavity 10, so even with long-term use, the drainage structure 100 can be prevented from being blocked or tangled with hair during sewage discharge, requiring no frequent maintenance and providing a better user experience.

[0076] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A drainage structure applied to a cleaning device, characterized by, include: Multiple cavities, each cavity including an inlet, an outlet and a vent between the inlet and the outlet, each inlet being provided with a first one-way valve and each outlet being provided with a second one-way valve, the first one-way valve and the second one-way valve being installed in the same direction and configured to allow liquid to flow in from the inlet and out from the outlet; The manifold is connected to the outlets of the plurality of cavities; A drive assembly includes a drive motor and a drive element, the drive element being configured to be driven by the drive motor to reciprocate between the plurality of cavities; The elastic waterproof membrane is a deformable elastic diaphragm. The elastic waterproof membrane is installed at the vent and sealed to the vent. The elastic waterproof membrane is fixedly connected to the driving component and located within the movement path of the driving component. The driving component reciprocates to compress or stretch the elastic waterproof membrane, so that the elastic waterproof membrane has a compressed state and a stretched state and switches between the compressed state and the stretched state.

2. The drainage structure according to claim 1, wherein, The drive component includes a connecting portion and connecting arms extending from the connecting portion to each vent, the connecting arms being fixedly connected to the elastic waterproof membrane.

3. The drainage structure of claim 2, wherein, The drive assembly includes an eccentric device rotatably connected to the drive motor. The eccentric device has a protrusion, and the connecting part is a strip-shaped hole. The protrusion is inserted into the strip-shaped hole. The drive motor rotates to drive the eccentric device to rotate, thereby driving the drive component to reciprocate. The eccentricity of the eccentric device can be changed by adjusting the position of the protrusion on the eccentric device.

4. The drainage structure of claim 1, wherein, The manifold includes multiple inlets and one outlet. The inlets are connected to the outlets of the multiple cavities respectively. The liquid in the cavities is mixed through the manifold and then flows out through the outlet.

5. The drainage structure of claim 4, wherein, A third check valve is provided at the output port of the manifold, and the first check valve, the second check valve and the third check valve are installed in the same direction.

6. The drainage structure of claim 2, wherein, The drainage structure includes a first cavity and a second cavity. The first cavity includes a first vent, and the second cavity includes a second vent. Both the first vent and the second vent are fixedly connected to the elastic waterproof membrane. The driving component is configured to reciprocate between the first cavity and the second cavity.

7. The drainage structure of claim 6, wherein, When the elastic waterproof membrane at the first vent is in a compressed state, the elastic waterproof membrane at the second vent is in a stretched state; when the elastic waterproof membrane at the first vent is in a stretched state, the elastic waterproof membrane at the second vent is in a compressed state.

8. The drainage structure of claim 6, wherein, The movement path of the drive component is a straight line. The first vent and the second vent are respectively connected to an outer cover. The outer cover is provided with a connection port on the side near the drive component. The connecting arm passes through the connection port and connects to the elastic waterproof membrane.

9. The drainage structure of claim 6, wherein, The driving component includes a swing arm with a rotation center, and the driving motor drives the swing arm to perform reciprocating circular arc motion around the rotation center as the axis.

10. A cleaning device, characterized in that, Includes the drainage structure described in any one of claims 1 to 9.

11. A method for controlling liquid ratio, applied to the cleaning equipment of claim 10, characterized in that, The cleaning device includes a manifold, multiple cavities, and a drive component. Each cavity includes an inlet, an outlet, and a vent located between the inlet and the outlet. The cleaning device includes a first cavity and a second cavity. The method includes: During the reciprocating motion cycle, when the driving component moves away from the first cavity, the first cavity is in a water-absorbing state. The inlet of the first cavity draws in the i-th type of liquid with a volume of Vi from the outside, where i = {1, ..., n} and n is the total number of the first cavities. The second cavity discharges the j-th type of liquid with a volume of Vj to the manifold through the outlet, where j = {1, ..., m} and m is the total number of the second cavities. When the driving component moves toward the first cavity, the first cavity is in a drainage state. The outlet of the first cavity discharges a volume of the i-th type of liquid, Vi, into the manifold, where i = {1, ..., n} and n is the total number of the first cavities. The second cavity draws in a volume of the j-th type of liquid, Vj, from the outside through the inlet, where j = {1, ..., m} and m is the total number of the second cavities. Repeat the above steps until the cycle stops, and output the mixed solution in the manifold to the cleaning device.

12. The method of claim 11, wherein, The volume of the first liquid drawn into the first cavity is V1 = 1 / 3 * (S * h1), where S is the area of ​​the elastic waterproof membrane and h1 is the stroke of the elastic waterproof membrane of the first cavity. The volume of the second liquid drawn into the second cavity is V2 = 1 / 3 * (S * h2), where h2 is the stroke of the elastic waterproof membrane of the second cavity.

13. The method of controlling the proportioning of liquids according to claim 12, wherein, The drainage structure includes an eccentric device with an eccentricity of R, where 2R = h1 + h2. By changing the eccentricity of the eccentric device, the volume V1 of the first liquid drawn into the first cavity and the volume V2 of the second liquid drawn into the second cavity can be changed.

14. The method of controlling the proportioning of liquids according to claim 13, wherein, The concentration of the first liquid in the mixed solution is C = V1*N / (V1*N+V2*N)*100% = h1 / (h1+h2).

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