Liquid drainage system and cleaning equipment

Abstract

The utility model relates to a liquid drainage system and cleaning equipment, the liquid drainage system comprises a liquid storage device, a communicating pipeline, a pump body unit and a first one-way valve body, and the liquid storage device is constructed to be provided with a liquid storage cavity used for temporarily storing liquid and a liquid outlet used for discharging the liquid; part of the communicating pipeline is configured to be arranged at the position higher than the highest water level in the liquid storage cavity; the first one-way valve body is arranged at a position higher than the highest water level in the liquid storage cavity; the first one-way valve body is provided with a first communication port and a second communication port; the first communicating port is configured to communicate with a communicating pipeline, and the second communicating port is configured to communicate with the outside; and a passage in the direction from the second communication port to the first communication port is configured to allow conduction under the action of external force. The liquid drainage system and the cleaning equipment are simple in structure, low in production cost and capable of effectively controlling liquid drainage.

Description

Technical Field

[0001] This disclosure relates to the field of cleaning technology, and more specifically, to a drainage system and cleaning equipment. Background Technology

[0002] Cleaning equipment is widely used in modern life, from homes to industries, and its efficient and convenient cleaning functions are loved by users. As an indispensable part of cleaning equipment, the drainage system is responsible for the safe and effective discharge of wastewater generated during the cleaning process, playing a vital role in ensuring cleaning effectiveness and environmental hygiene. However, existing drainage systems often suffer from complex structures and high costs, which not only increase the difficulty of manufacturing the equipment but also raise the user's operating costs. Furthermore, the complex control logic makes the operation and maintenance of the drainage system difficult, prone to malfunctions, and affects the normal operation of the equipment. Utility Model Content

[0003] In view of this, the present disclosure provides a drainage system and a cleaning device to address the technical deficiencies existing in the prior art.

[0004] To achieve the above objectives, the present disclosure adopts the following technical solution:

[0005] According to a first aspect of this disclosure, a drainage system is provided, comprising:

[0006] A liquid storage device, the liquid storage device being configured to have a liquid storage chamber for temporarily storing liquid and a liquid outlet for discharging liquid;

[0007] A connecting pipe is provided, wherein the inlet of the connecting pipe is connected to the outlet of the connecting pipe, and the outlet of the connecting pipe is configured for draining liquid; wherein, a portion of the connecting pipe is configured to be positioned above the highest water level in the storage chamber.

[0008] A pump unit, which is disposed in a connecting pipe and configured to discharge liquid from a storage chamber through the connecting pipe;

[0009] A first one-way valve body is positioned above the highest water level in the storage chamber; the first one-way valve body has a first connecting port and a second connecting port; the first connecting port is configured to connect with the connecting pipeline, and the second connecting port is configured to connect with the outside; wherein, the passage from the second connecting port to the first connecting port is configured to allow conduction under the action of external force.

[0010] In one embodiment of this disclosure, the connecting conduit includes, in the direction of liquid flow:

[0011] A first conduit, configured to communicate with the liquid outlet, wherein at least a portion of the first conduit is configured to extend downward at an angle;

[0012] The second pipeline has one end configured to connect with the first pipeline, and the position where it connects with the first pipeline forms an inflection point; the second pipeline is configured to extend upward from the inflection point to a position higher than the highest water level in the liquid storage chamber.

[0013] In one embodiment of this disclosure, the first one-way valve body is configured to communicate with a position in the second pipeline above the highest water level in the storage chamber.

[0014] In one embodiment of this disclosure, a tee is provided in the second pipeline at a position higher than the highest water level in the liquid storage chamber, and the first one-way valve body is configured to communicate with the tee through a bypass pipeline.

[0015] In one embodiment of this disclosure, a second one-way valve body is provided upstream of the first one-way valve body in the connecting pipeline. The second one-way valve body is configured to allow liquid in the connecting pipeline to flow only towards the drain port.

[0016] In one embodiment of this disclosure, the second one-way valve body is disposed in a downwardly extending portion of the first pipeline; and in the direction of liquid flow, the second one-way valve body is configured to extend downwardly.

[0017] In one embodiment of this disclosure, the pump unit is disposed in the first pipeline upstream of the second one-way valve body, and the outlet of the pump unit is configured to be higher in the height direction than the inlet of the second one-way valve body.

[0018] In one embodiment of this disclosure, the inflection point is configured to be no higher than the bottom of the reservoir in the height direction.

[0019] In one embodiment of this disclosure, the connecting conduit further includes a third conduit communicating with the second conduit, the third conduit being configured to extend downward from the location where it is connected to the second conduit.

[0020] According to a second aspect of this disclosure, a cleaning device is provided, including a body and a cleaning element disposed on the body, the cleaning element being configured to clean a work surface; and a drainage system as described above is provided on the body.

[0021] The drainage system disclosed herein has a portion of the connecting pipe positioned above the highest water level in the storage chamber. This prevents liquid in the storage chamber from being discharged through the connecting pipe when the pump unit stops. Furthermore, after the drainage process is complete, the connecting pipe is unidirectionally connected to the outside via a first one-way valve, thereby emptying the liquid in the connecting pipe and preventing dripping from the drain port. This drainage system requires only one electric mechanism, has a simple structure, low production cost, and effectively controls the drainage process.

[0022] Other features and advantages of this disclosure will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a drainage system provided in one embodiment of the present disclosure;

[0024] Figure 2 This is a schematic diagram of a drainage system provided in an embodiment of the present disclosure in a non-draining state;

[0025] Figure 3 This is a schematic diagram of a drainage system in a drainage state according to an embodiment of this disclosure;

[0026] Figure 4 This is a schematic diagram of a drainage system provided in an embodiment of the present disclosure in the drainage completed state.

[0027] 1-Liquid storage device; 11-Liquid storage chamber; 12-Liquid outlet; 2-Connecting pipeline; 21-First pipeline; 22-Second pipeline; 23-Third pipeline; 3-Pump unit; 4-First one-way valve body; 41-First connecting port; 42-Second connecting port; 5-T-way; 6-Bypass pipeline; 7-Second one-way valve body; 8-Sponge; 9-Drainage port. Detailed Implementation

[0028] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present disclosure.

[0029] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this disclosure or its application or use.

[0030] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0032] The specific embodiments of this disclosure are described below with reference to the accompanying drawings.

[0033] In this article, terms such as "up," "down," "front," "back," "left," and "right" are used only to indicate the relative positional relationship between related parts, rather than to define the absolute position of these related parts.

[0034] In this article, "first," "second," etc., are used only to distinguish one another, and not to indicate degree of importance, order, or prerequisite for each other.

[0035] In this document, terms such as “equal” and “same” are not strict mathematical and / or geometric limitations, but also include errors that are understandable to those skilled in the art and permissible in manufacturing or use.

[0036] This disclosure provides a drainage system applicable to cleaning equipment such as handheld cleaning devices, robotic vacuum cleaners, and window cleaning robots. The drainage system includes a liquid storage device, connecting pipes, a pump unit, and a first one-way valve. The liquid storage device has a storage chamber for temporarily storing liquid, such as a wastewater tank or a clean water tank for the cleaning equipment, and also includes a liquid outlet for discharging liquid.

[0037] The connecting pipeline has an inlet and an outlet. The inlet of the connecting pipeline is connected to the outlet of the storage device. Liquid in the storage chamber exits through the outlet, enters through the inlet of the connecting pipeline, and exits through the outlet. A pump unit is installed in the connecting pipeline to provide power for liquid discharge. During discharge, the pump unit can control the pumping speed and flow rate. Part of the connecting pipeline is configured to be positioned above the highest water level in the storage chamber. This ensures that when the pump unit is not operating, the liquid level in the connecting pipeline remains the same as the liquid level in the storage chamber, preventing liquid in the storage chamber from draining out of the connecting pipeline. This avoids the need for electrically actuated valves such as solenoid valves to close the pipeline.

[0038] The disclosed drainage system includes a first one-way valve body positioned above the highest water level in the storage chamber. This first one-way valve body has a first connecting port and a second connecting port. The first connecting port is connected to a connecting pipe, and the second connecting port is connected to the outside. The passage from the second connecting port to the first connecting port is configured to allow conduction under external force. Because the first one-way valve body only allows conduction from the second connecting port to the first connecting port, during drainage, liquid in the connecting pipe cannot be discharged through the first or second connecting port; it can only be discharged from the drain port of the connecting pipe. When drainage stops, due to the siphon effect of the drainage pipe, some liquid will still be discharged. At this time, under the gravity of the residual liquid in the connecting pipe, the first one-way valve body opens, allowing outside air to enter the connecting pipe through the first one-way valve body. This allows the residual liquid in the connecting pipe to be quickly discharged, preventing dripping or leakage.

[0039] The liquid discharge system disclosed herein controls the discharge of liquid through a pump unit and requires only one electric mechanism to achieve the function of liquid discharge. It also solves the problems of leakage and dripping through a first one-way valve body. Its structure is simple and its production cost is low.

[0040] This disclosure provides a cleaning device including a body and cleaning elements disposed on the body. The cleaning elements are cleaning components that act on a working surface, such as a roller brush or a cloth. The body is equipped with a drainage system as described above. In one application scenario, the drainage system can be used to discharge wastewater generated after the body cleans the cleaning elements.

[0041] For ease of understanding, please refer to the following: Figures 1 to 4 The specific structure and working principle of the drainage system and cleaning equipment disclosed herein will be described in detail with reference to one embodiment.

[0042] like Figure 1As shown, according to a first aspect of this disclosure, a drainage system is provided that can be applied to cleaning equipment such as handheld cleaning devices, robotic vacuum cleaners, and window cleaning robots. Specifically, the drainage system of this disclosure includes a liquid storage device 1, a connecting pipe 2, a pump unit 3, and a first one-way valve body 4. The liquid storage device is configured to have a liquid storage chamber 11 for temporarily storing liquid and a liquid outlet 12 for discharging liquid; the inlet of the connecting pipe 2 is connected to the outlet 12, and the drain port 9 of the connecting pipe 2 is configured for draining liquid. A portion of the connecting pipe 2 is configured to be positioned above the highest water level in the liquid storage chamber 11. Pump unit 3 is disposed in connecting pipe 2 and is configured to discharge liquid in storage chamber 11 through connecting pipe 2; first one-way valve body 4 is disposed at a position higher than the highest water level in storage chamber 11; first one-way valve body 4 has a first connecting port 41 and a second connecting port 42; the first connecting port 41 is configured to communicate with connecting pipe 2, and the second connecting port 42 is configured to communicate with the outside; wherein, the passage from the second connecting port 42 to the first connecting port 41 is configured to allow conduction under the action of external force.

[0043] Specifically, the drainage system includes a storage device 1. In this embodiment, the storage device 1 can be a clean water tank, a wastewater tank, or a device for storing other liquids, without any limitation. The storage device 1 is provided with a storage chamber 11, which is used to temporarily store liquids. For example, when the drainage system of this disclosure is applied to the wastewater discharge system of cleaning equipment, the storage device 1 can be the wastewater tank of the cleaning equipment, and its storage chamber 11 is also used to store the dirt collected by the cleaning equipment.

[0044] A liquid outlet 12 is provided on the liquid storage device 1. In this embodiment, the liquid outlet 12 is located at the bottom of the liquid storage device 1. During the discharge process, the liquid gathers at the bottom of the liquid storage device 1 due to gravity and is discharged from the liquid outlet 12. Of course, those skilled in the art will know that the liquid outlet 12 can also be located at the bottom of the side wall of the liquid storage device 1, which will not be described in detail here.

[0045] The inlet of the connecting pipe 2 is connected to the outlet 12 of the liquid storage device 1, allowing liquid to be discharged from the outlet 12 of the liquid storage device 1, enter the connecting pipe 2 from the inlet, and then be discharged from the outlet 9 of the connecting pipe 2. The pump unit 3 is disposed in the connecting pipe 2 and is used to draw liquid stored in the liquid storage chamber 11 into the connecting pipe 2 and then discharge it from the connecting pipe 2. In this embodiment, the pump unit 3 can be a centrifugal pump or a gear pump; no limitation is made here.

[0046] Part of the connecting pipe 2 is positioned above the highest water level in the storage chamber 11. When the drainage system is not in a drainage state, due to the principle of communicating vessels, the liquid level in the connecting pipe 2 is the same as that in the storage chamber 11, and it will not exceed the highest position of the connecting pipe. This ensures that when the pump unit 3 is stopped, the liquid in the storage chamber 11 will not be discharged from the drain port 9 of the connecting pipe. When drainage is required, the pump unit 3 operates, causing the liquid to exceed the highest position of the connecting pipe and be discharged from its drain port 9.

[0047] To prevent uncontrolled or abnormal drainage, the drainage system is equipped with a first one-way valve body 4. This first one-way valve body 4 is positioned above the highest water level in the storage chamber 11. It has a first connecting port 41 and a second connecting port 42. The first connecting port 41 connects to the connecting pipe 2, and the second connecting port 42 connects to the outside. The passage from the second connecting port 42 to the first connecting port 41 is allowed to remain open under external force. In other words, the passage from the first connecting port 41 to the second connecting port 42 is always closed, preventing liquid in the connecting pipe 2 from being discharged outwards through the first one-way valve body 4 during drainage.

[0048] When drainage ends or stops abnormally midway, even if the pump unit 3 stops working, because one end of the connecting pipe 2 is connected to the bottom of the liquid storage device 1, and part of the connecting pipe 2 is higher than the highest water level in the liquid storage chamber 11, the liquid in the connecting pipe 2 still maintains a certain height difference. The siphon effect will cause the liquid to continue to flow outward through the connecting pipe 2, leading to uncontrolled and abnormal drainage. By setting the first one-way valve body 4, when drainage ends or stops abnormally midway, the liquid will form a negative pressure in the connecting pipe 2 during the continued outward discharge process. Under the action of the negative pressure, the passage from the second connecting port 42 to the first connecting port 41 will be opened, and outside air will enter the connecting pipe. This can block the siphon effect of the connecting pipe and allow the liquid in the downward extension of the connecting pipe to be quickly discharged from the drain port 9, thereby avoiding the problems of dripping and leakage at the drain port.

[0049] Figures 2 to 4 A schematic diagram of the drainage system of this disclosure is shown. For example... Figure 2 As shown, when the liquid storage chamber 11 of the drainage system is full of liquid and no liquid is being drained, the pump unit 3 does not work, and the connecting pipe 2 maintains the same liquid level as the liquid in the liquid storage chamber 11. Since part of the connecting pipe 2 is constructed to be positioned above the highest water level in the liquid storage chamber 11, the liquid will not flow out at this time. Figure 3 As shown, when the drainage system is in the drainage state, the pump unit 3 starts working, the first one-way valve 4 is in the closed state, and the pump unit 3 draws the liquid in the storage chamber 11 into the connecting pipe 2, and the liquid is discharged through the drain port 9. Figure 4As shown, when drainage stops, there may be two situations: one is the normal end of drainage, and the other is the abnormal stop of drainage in the middle. At this time, the pump unit 3 stops working, the first one-way valve 4 is in the open state, and the connecting pipe 2 will continue to drain due to the siphon effect. Meanwhile, outside air will enter the connecting pipe 2 from the first one-way valve 4, blocking the siphon effect and allowing the liquid at the corresponding position in the connecting pipe 2 to flow out quickly, thereby avoiding the problem of dripping or leaking at the drain port.

[0050] In one specific embodiment of this disclosure, reference is made to Figure 1 In the direction of liquid flow, the connecting pipe 2 includes a first pipe 21 and a second pipe 22. The first pipe 21 is configured to communicate with the liquid outlet 12, and at least a portion of the first pipe 21 is configured to extend downward at an angle. One end of the second pipe 22 is configured to communicate with the first pipe 21, and the position where it communicates with the first pipe 21 forms an inflection point. The second pipe 22 is configured to extend upward from the inflection point to a position higher than the highest water level in the liquid storage chamber 11.

[0051] like Figure 1 As shown, specifically, the connecting pipe 2 includes a first pipe 21 and a second pipe 22. The first pipe 21 is connected to the outlet 12, and at least a portion of the first pipe 21 extends downwards at an angle in the horizontal direction. This arrangement helps guide the smooth flow of liquid and also allows for the initial separation of some heavier impurities using gravity. One end of the second pipe 22 is connected to the first pipe 21, and the position where it connects to the first pipe 21 forms an inflection point. The second pipe 22 is constructed to extend upwards from the inflection point to a position higher than the highest water level in the storage chamber 11. In one application scenario of this embodiment, the drainage system is used in cleaning equipment, and the storage device 1 is the wastewater tank in the cleaning equipment. By setting an inflection point on the connecting pipe 2, liquid is always present at the inflection point of the connecting pipe 2, thereby preventing the odor from spreading outwards from the storage chamber 11.

[0052] like Figures 1 to 2 As shown, in one embodiment of this disclosure, the inflection point is configured to be no higher than the bottom of the liquid storage cavity 11 in the height direction.

[0053] Specifically, the inflection point is set at a position no higher than the bottom of the liquid storage chamber 11. This ensures that when the pump unit 3 is stopped, the liquid in the liquid storage chamber 11 can at least flow and remain at the inflection point. This prevents the odor in the liquid storage chamber 11 from escaping through the inflection point, thereby effectively isolating and blocking odors and improving the user experience.

[0054] like Figures 2 to 4As shown, in one embodiment of this disclosure, a second one-way valve body 7 is provided in the connecting pipe 2 upstream of the first one-way valve body 4. The second one-way valve body 7 is configured to allow liquid in the connecting pipe 2 to flow only towards the drain port 9.

[0055] To further prevent backflow in the connecting pipe 2, a second one-way valve 7 is installed upstream of the first one-way valve 4. Specifically, the second one-way valve 7 is positioned before the inflection point. This way, heavy impurities in the liquid will settle at the inflection point instead of accumulating in the second one-way valve 7, reducing the risk of blockage. The second one-way valve 7 is configured to allow liquid in the connecting pipe 2 to flow only towards the drain port 9. When liquid is discharged from the storage device 1, it moves from the first pipe 21 to the second pipe 22 under its own weight and the suction force of the pump unit 3. During this process, it flows through the second one-way valve 7. Liquid passing through the second one-way valve 7 can only continue to flow towards the drain port 9, thus preventing backflow.

[0056] In one embodiment of this disclosure, a second one-way valve body 7 is disposed in a portion of the first conduit 21 that extends at an angle downward; and in the direction of liquid flow, the second one-way valve body 7 is configured to extend at an angle downward.

[0057] like Figures 2 to 4 As shown, as previously described, the second one-way valve body 7 ensures that the liquid flows in only one direction, preventing backflow into the reservoir 11 and helping to maintain the stability and reliability of the entire system. Because the second one-way valve body 7 extends downwards at an angle in the direction of liquid flow, the liquid flows more smoothly through it, ensuring stable liquid flow. When the liquid passes through the inclined second one-way valve body 7, heavier impurities are more likely to deposit at the bottom of the pipe, preventing impurities from accumulating inside the second one-way valve body 7.

[0058] like Figures 2 to 4 As shown, in one embodiment of this disclosure, the pump unit 3 is disposed in the first pipeline 21 upstream of the second one-way valve body 7, and the outlet of the pump unit 3 is configured to be higher in the height direction than the inlet of the second one-way valve body 7. Positioning the pump unit 3 upstream of the second one-way valve body 7 ensures that during the drainage process, the liquid carrying some impurities will flow downwards through the second one-way valve body 7 into the first pipeline 21, preventing foreign matter from accumulating inside the pump unit 3, thereby improving the service life of the pump unit 3. Furthermore, configuring the outlet of the pump unit 3 to be higher in the height direction than the inlet of the second one-way valve body 7 utilizes gravity to reduce resistance to liquid flow and improve the overall efficiency of the system.

[0059] like Figures 1 to 4As shown, in one embodiment of this disclosure, the first one-way valve body 4 is configured to communicate with a position in the second pipeline 22 that is above the highest water level in the liquid storage chamber 11.

[0060] Specifically, when the drainage system is in the drainage state, under the action of the pump unit 3, liquid flows from the outlet 12 of the storage device 1 into the first pipe 21 of the connecting pipe 2, and flows to the position in the second pipe 22 that is higher than the highest water level in the storage chamber 11. When drainage stops, the pump unit 3 stops working. At this time, the second pipe 22 will continue to drain under the siphon effect. The first one-way valve 4 is in the open state. Since the first one-way valve 4 is connected to the position in the second pipe 22 that is higher than the highest water level in the storage chamber 11, outside air enters the first one-way valve 4 and moves towards the drainage port 9, cutting off the liquid flow from the position in the second pipe 22 that is higher than the highest water level in the storage chamber 11, thus stopping the drainage. This effectively prevents possible dripping after drainage is completed, improving the efficiency of the entire drainage system and the user experience.

[0061] In addition, such as Figure 1 As shown in the figure, in one embodiment of this disclosure, to effectively avoid the whistling sound generated when air enters the air inlet of the first one-way valve body 4, a sponge 8 is provided in the air inlet. Specifically, the diameter of the air inlet of the first one-way valve body 4 is small, only about 5 mm. When air enters quickly through such a small diameter, it easily generates high-speed airflow, causing turbulence and eddies to form inside and around the hole, thus triggering resonance. This resonance causes the vibration of air molecules to intensify, generating a whistling sound, which seriously affects the user experience of the system. As a porous material, the sponge 8 has good sound absorption properties, which can absorb sound wave energy and convert it into heat energy, thereby weakening or eliminating the whistling sound. At the same time, the porous structure of the sponge 8 can buffer the airflow, reduce the turbulence and impact of the airflow, and further reduce noise. The physical isolation layer formed by the sponge 8 in the air inlet can block or reduce the direct impact of the airflow on the wall of the air inlet, reduce the noise generated by the airflow impact, and improve the user experience of the system.

[0062] like Figures 2 to 4 As shown, in one embodiment of this disclosure, a tee 5 is provided in the second pipeline 22 at a position higher than the highest water level in the liquid storage chamber 11, and the first one-way valve body 4 is configured to be connected to the tee 5 through a bypass pipeline 6.

[0063] Specifically, in the drainage system, in order to more accurately control the drainage process and effectively prevent the liquid from continuing to flow out after the drainage is completed, a three-way valve 5 is provided in the second pipeline 22 at a position higher than the highest water level in the storage chamber 11, and the first one-way valve body 4 is connected to the three-way valve 5 through the bypass pipeline 6.

[0064] When the drainage system needs to drain, pump unit 3 starts, using suction to draw liquid from storage device 1 into first pipe 21 through outlet 12. The liquid then flows along first pipe 21 to second pipe 22 and is discharged from outlet. When the drainage operation is complete, pump unit 3 stops working. Although pump unit 3 no longer provides power, the liquid level in second pipe 22 has exceeded the highest water level in storage chamber 11, creating a siphon effect that allows liquid to continue flowing out along second pipe 22. At this time, outside air enters bypass pipe 6 through first one-way valve body 4, reaches tee 5 through bypass pipe 6, and then enters second pipe 22, thereby blocking the flow of liquid and effectively interrupting the siphon effect, ensuring the stability and reliability of the system.

[0065] like Figures 1 to 4 As shown, in one embodiment of this disclosure, the connecting conduit 2 further includes a third conduit 23 connected to the second conduit 22, the third conduit 23 being configured to extend downward from the position connected to the second conduit 22.

[0066] Specifically, one end of the third pipe 23 is connected to the second pipe 22, and the other end is connected to or serves as the drain port 9. The third pipe 23 extends downward from the point of connection with the second pipe 22, accelerating liquid discharge by utilizing gravity and improving the overall discharge efficiency of the drainage system. It should be noted that this disclosure is for descriptive convenience only, and defines the first, second, and third pipes functionally. In practical applications, more pipe sections may be used to connect components such as the pump unit and check valve. Furthermore, to ensure smooth drainage, bends in the pipes are made as smoothly as possible, which will not be specifically described here.

[0067] According to a second aspect of this disclosure, a cleaning device is provided, including a body and a cleaning element disposed on the body, the cleaning element being configured to clean a working surface; and a drainage system as described above is provided on the body.

[0068] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that this disclosure is not limited to the described order of actions, because according to this disclosure, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to this disclosure.

[0069] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0070] The preferred embodiments disclosed above are merely illustrative of this disclosure. The optional embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this disclosure. These embodiments are selected and specifically described in this disclosure to better explain the principles and practical applications of this disclosure, thereby enabling those skilled in the art to better understand and utilize this disclosure. This disclosure is limited only by the claims and their full scope and equivalents.

Claims

1. A drainage system, characterized in that, include: A liquid storage device (1) is configured to have a liquid storage chamber (11) for temporarily storing liquid and a liquid outlet (12) for discharging liquid. A connecting pipe (2) is provided, the inlet of which is connected to the outlet (12), and the outlet (9) of which is configured to drain liquid; wherein, part of the connecting pipe (2) is configured to be located at a position higher than the highest water level in the storage chamber (11); Pump body unit (3), the pump body unit (3) is disposed in the connecting pipe (2) and is configured to discharge liquid in the storage chamber (11) through the connecting pipe (2); The first one-way valve body (4) is located at a position higher than the highest water level in the liquid storage chamber (11); the first one-way valve body (4) has a first connecting port (41) and a second connecting port (42); the first connecting port (41) is configured to connect with the connecting pipe (2), and the second connecting port (42) is configured to connect with the outside; wherein, the passage from the second connecting port (42) to the first connecting port (41) is configured to allow conduction under the action of external force.

2. The drainage system according to claim 1, characterized in that, In the direction of liquid flow, the connecting pipe (2) includes: The first conduit (21) is configured to communicate with the outlet (12), and at least a portion of the first conduit (21) is configured to extend downward at an angle; The second pipeline (22) is configured to connect one end to the first pipeline (21), and the position where it connects to the first pipeline (21) forms an inflection point; the second pipeline (22) is configured to extend upward from the inflection point to a position higher than the highest water level in the liquid storage chamber (11).

3. The drainage system according to claim 2, characterized in that, The first one-way valve body (4) is configured to communicate with a position in the second pipeline (22) above the highest water level in the liquid storage chamber (11).

4. The drainage system according to claim 3, characterized in that, A tee (5) is provided in the second pipeline (22) at a position higher than the highest water level in the liquid storage chamber (11), and the first one-way valve body (4) is configured to be connected to the tee (5) through a bypass pipeline (6).

5. The drainage system according to claim 2, characterized in that, A second one-way valve body (7) is provided upstream of the first one-way valve body (4) in the connecting pipe (2). The second one-way valve body (7) is configured to allow liquid in the connecting pipe (2) to flow only towards the drain port (9).

6. The drainage system according to claim 5, characterized in that, The second one-way valve body (7) is disposed in the downwardly extending portion of the first pipeline (21); and in the direction of liquid flow, the second one-way valve body (7) is configured to extend downwardly.

7. The drainage system according to claim 6, characterized in that, The pump unit (3) is located in the first pipeline (21) upstream of the second one-way valve body (7), and the outlet of the pump unit (3) is configured to be higher in the height direction than the inlet of the second one-way valve body (7).

8. The drainage system according to claim 2, characterized in that, The inflection point is configured such that it is not higher than the bottom of the liquid storage cavity (11) in the height direction.

9. The drainage system according to claim 2, characterized in that, The connecting pipe (2) also includes a third pipe (23) connected to the second pipe (22), the third pipe (23) being configured to extend downward from the position where it is connected to the second pipe (22).

10. A cleaning device, characterized in that, It includes a body and a cleaning element disposed on the body, the cleaning element being configured to clean the working surface; and a drainage system according to any one of claims 1 to 9 is disposed on the body.

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