Solid-liquid separation system of a cleaning apparatus and a cleaning apparatus

Abstract

This utility model relates to a solid-liquid separation system and cleaning equipment, including a waste tank and a negative pressure generating device. The waste tank includes a first chamber for storing solid waste and a second chamber for storing liquid waste. The waste tank is provided with a liquid passage connecting the first chamber and the second chamber. The liquid passage is configured to allow liquid waste and airflow to flow simultaneously from the first chamber to the second chamber. The negative pressure generating device acts on the second chamber to generate a migration negative pressure. Driven by the migration negative pressure, a pressure difference is formed between the first end and the second end of the liquid passage, causing the liquid waste in the first chamber to migrate to the second chamber through the liquid passage, thus achieving solid-liquid separation and storage. The solution of this utility model can solve the problems in the prior art where liquid waste is continuously carried into the next stage of the air duct, causing the cleaning equipment to spray wastewater, and the problem of the suction motor being flooded due to liquid waste entering the next stage of the air duct, thus shortening its lifespan.

Description

Technical Field

[0001] This utility model relates to the field of household cleaning appliance technology, and in particular to a solid-liquid separation system for a cleaning device and a cleaning device. Background Technology

[0002] With the development of science and technology and the economy, traditional cleaning methods can no longer meet people's current needs. Cleaning equipment has emerged, such as vacuum cleaners, cleaning robots, desktop cleaners and kitchen stove surface cleaners, which have the advantages of being lightweight, wireless and low noise. In order to adapt to the surface cleaning needs of different scenarios, existing cleaning equipment has gradually evolved from the original dry suction to the current cleaning equipment that can add water to clean the floor.

[0003] However, existing water-based cleaning equipment suffers from a fatal flaw: the powerful suction of the motor draws in both solid and liquid waste, and there's no effective solid-liquid separation solution. As liquid waste accumulates, the strong suction of the motor causes a large amount to be continuously carried into the next stage of the air duct. This results in the cleaning equipment constantly spraying out wastewater, and the continuous influx of liquid waste into the next stage's suction motor can lead to water ingress, jeopardizing its lifespan. This severely impacts cleaning efficiency and user experience. Therefore, how to achieve effective solid-liquid separation is a pressing technical problem that the cleaning equipment industry needs to solve. Utility Model Content

[0004] Therefore, it is necessary to provide a solid-liquid separation system for cleaning equipment and a cleaning equipment to solve the problems existing in the prior art.

[0005] A solid-liquid separation system for a cleaning device includes a waste tank and a negative pressure generating device. The waste tank has a waste inlet, and the negative pressure generating device includes a suction motor with its air inlet connected to the waste inlet for generating negative pressure to suck up mixed waste from the floor to be cleaned. The waste tank includes a first chamber for containing solid waste and a second chamber for containing liquid waste. The waste tank has a liquid passage that communicates with both the first and second chambers. The liquid passage includes a first end connected to the first chamber and a second end connected to the second chamber. A migration negative pressure generating device acts on the second chamber to generate migration negative pressure. Driven by the migration negative pressure, a pressure difference is formed between the first and second ends of the liquid passage, causing the liquid waste in the first chamber to migrate to the second chamber via the liquid passage. The liquid passage is configured to simultaneously allow liquid waste and airflow from the first chamber to the second chamber, achieving solid-liquid separation and storage.

[0006] Furthermore, the negative pressure generating device is the suction motor; the waste bin is provided with a first fluid outlet channel, which includes the liquid passage and the air passage; the air passage connects the second chamber and the air inlet of the suction motor, so that the negative pressure of the suction motor acts on the second chamber, causing the first fluid outlet channel to form a negative pressure. Under the action of the negative pressure, the liquid waste in the first chamber flows to the second chamber through the liquid passage; at the same time, the airflow in the first chamber can enter the second chamber through the liquid passage and be sucked out, realizing solid-liquid separation and storage.

[0007] Furthermore, the waste bin is also provided with a second fluid outlet channel; the second fluid outlet channel is connected to the air inlet of the suction motor; wherein, the negative pressure of the suction motor acts synchronously on the first fluid outlet channel and the second fluid outlet channel, so that the first chamber forms a main negative pressure suction area to suck up mixed waste; at the same time, the negative pressure of the first fluid outlet channel drives the liquid waste from the first chamber to flow from the first chamber to the second chamber along the liquid passage, realizing solid-liquid separation and storage.

[0008] Furthermore, the minimum cross-sectional area of ​​the liquid passage is smaller than the minimum cross-sectional area of ​​the second fluid outlet passage, so that the main suction force is concentrated in the first chamber.

[0009] Furthermore, the second fluid outlet channel is disposed on the side wall of the first chamber and is directly connected to the air inlet of the suction motor. The first chamber is also provided with a barrier wall to prevent mixed waste from entering the second fluid outlet channel.

[0010] Furthermore, the second fluid outlet channel is equipped with a filter screen, which is used to block solid waste from entering.

[0011] Furthermore, the inlet of the second fluid outlet channel is located on the inner wall of the first chamber to avoid the intake of settled liquid waste.

[0012] Furthermore, the second fluid outlet channel and the first fluid outlet channel are independently configured, and the second fluid outlet channel and the first fluid outlet channel are connected in parallel to the air inlet of the suction motor.

[0013] Furthermore, the air passage is formed in the waste bin and extends to the air inlet of the suction motor, directly communicating with the suction motor.

[0014] Furthermore, the second fluid outlet channel and the sewage inlet are designed to be located on the same side of the sewage tank.

[0015] Furthermore, the liquid passage is the only airflow connection path between the first chamber and the second chamber.

[0016] Furthermore, the liquid passage begins at the bottom of the first chamber and connects to the second chamber after being raised by a flow channel containing at least a portion of it.

[0017] Furthermore, the liquid passage is raised from the bottom of the first chamber to the upper part of the second chamber by an L-shaped or U-shaped flow channel, and the inlet end of the liquid passage in the second chamber is located above the liquid surface in the second chamber to prevent liquid backflow.

[0018] Furthermore, one end of the liquid passage is provided with a one-way valve, which only allows liquid to flow from the first chamber to the second chamber.

[0019] Furthermore, the migration negative pressure generating device is a second negative pressure motor, which is connected to the second chamber. Under the action of the second negative pressure motor, migration negative pressure is formed at the first end and the second end.

[0020] Furthermore, the migration negative pressure generating device is a negative pressure pump. Under the action of the negative pressure pump, the air pressure at the second end is less than the air pressure at the first end, so that an airflow pressure difference is formed between the first end and the second end.

[0021] Furthermore, the negative pressure pump is connected to the second end, and the negative pressure pump directly draws air from the second end; or, the negative pressure pump is connected to the second chamber, and the negative pressure pump directly draws air from the second chamber.

[0022] Furthermore, the first chamber is also equipped with a garbage bag for collecting solid waste, and the garbage bag can be independently and detachably installed in the first chamber.

[0023] Furthermore, the first chamber and the second chamber are arranged horizontally side by side, or the first chamber and the second chamber are arranged vertically in layers.

[0024] Furthermore, the waste bin is internally divided into a first chamber and a second chamber by a partition structure, and the first chamber and the second chamber are integrally formed.

[0025] Furthermore, the first chamber and the second chamber are independent of each other, and the first chamber and the second chamber can be detachably connected to each other independently.

[0026] This solution also provides a cleaning device, which includes the above-mentioned solid-liquid separation system, and includes a wet and dry vacuum cleaner. The cleaning device can be a floor scrubber, carpet cleaner, cleaning robot, desktop cleaner, or kitchen stove surface cleaner.

[0027] This solution also provides another cleaning device, which includes the above-mentioned solid-liquid separation system and a sludge inlet pipe. The sludge inlet pipe is connected to the suction motor to guide the garbage on the surface to be cleaned into the sludge tank. The air passage is directly connected to the sludge inlet pipe. Under the negative pressure of the suction motor, the airflow in the second chamber first enters the sludge inlet pipe and is then sucked into the suction motor along the sludge inlet pipe.

[0028] In the above embodiment, the internal space of the waste bin is divided into a first chamber for holding solid waste and a second chamber for holding liquid waste. The two chambers are connected by a liquid passage. The liquid waste in the first chamber is guided to the second chamber by migration negative pressure and airflow pressure difference to achieve solid-liquid separation. This solves the problem in the prior art where a large amount of liquid waste enters the next stage air duct with the airflow, causing the next stage air duct to be damaged by water spray and suction motor.

[0029] The solution cleverly uses negative pressure to guide liquid waste in the first chamber to the second chamber for solid-liquid separation. Furthermore, the design of the liquid passage allows airflow to enter the second chamber along the passage, correcting the airflow path and eliminating turbulence. This reduces the amount of liquid waste carried away by the airflow in the second chamber, further reducing the amount of liquid waste entering the next stage of the air duct. Consequently, it reduces the risk of wastewater spraying from the cleaning equipment and damage to the suction motor.

[0030] In a further implementation, a first fluid outlet channel and a second fluid outlet channel are designed for the waste bin. The second fluid outlet channel is located in the first chamber, while the first fluid outlet channel runs through both the first and second chambers. This design allows the main suction force of the cleaning equipment's suction motor to act directly on the first chamber through the second fluid outlet channel, thereby reducing the distance the negative pressure suction source needs to reach the first chamber. This maximizes the preservation of the cleaning equipment's air performance, ensuring sufficient suction power to draw mixed waste into the first chamber and improve the cleaning performance of the equipment. The first fluid outlet duct diverts a portion of the negative pressure suction from the suction motor. This negative pressure drives the liquid waste in the first chamber to flow into the second chamber, thus separating solid and liquid waste from the mixed waste for easier cleaning. Simultaneously, because the negative pressure suction from the first fluid outlet duct only accounts for a small portion of the suction motor's negative pressure suction, a large amount of liquid waste remains in the second chamber due to its larger capacity. The main suction power of the suction motor is distributed to the first chamber through the second fluid outlet duct. Since the first fluid outlet duct is not the primary source of negative pressure suction for the motor, its suction is insufficient to allow liquid waste to flow out of the second chamber and back into the suction motor with the airflow. This reduces the amount of liquid waste entering the suction motor, perfectly solving the problems of wastewater spraying and motor burnout in cleaning equipment. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the cleaning equipment structure provided in one embodiment of the present utility model;

[0032] Figure 2 for Figure 1 A schematic diagram of the main components of the cleaning equipment;

[0033] Figure 3 This is a cross-sectional view of the cleaning equipment structure provided in one embodiment of the present utility model;

[0034] Figure 4 A schematic diagram of the structure of a combination of a waste bin, a negative pressure generating device, and a migration negative pressure generating device provided in one embodiment of the present utility model;

[0035] Figure 5 A schematic diagram of the structure of a combination of a waste bin, a suction motor that simultaneously serves as a negative pressure generating device and a migration negative pressure generating device, provided in one embodiment of the present utility model;

[0036] Figure 6 for Figure 5A schematic diagram of a solid-liquid separation structure that combines the cross-sectional structure of the waste bin with the suction motor, which serves as both a negative pressure generating device and a migration negative pressure generating device.

[0037] Figure 7 A schematic diagram of the structure of a combination of a waste bin, a negative pressure generating device, and a migration negative pressure generating device provided in another embodiment of the present utility model;

[0038] Figure 8 A schematic diagram of a combination of a waste bin, a suction motor that simultaneously functions as a negative pressure generating device and a migration negative pressure generating device, provided in another embodiment of this utility model;

[0039] Figure 9 for Figure 8 A schematic diagram of a solid-liquid separation structure that combines the cross-sectional structure of the waste bin with the suction motor as a negative pressure generating device and a migration negative pressure generating device.

[0040] Figure 10 for Figure 8 A schematic diagram of a solid-liquid separation structure, showing a partial cross-section of the waste bin and a combination of a suction motor as a negative pressure generating device and a migration negative pressure generating device.

[0041] Figure 11 for Figure 10 A partial enlarged view of the cross-section of the waste bin at point A;

[0042] Figure 12 A schematic diagram of the cross-sectional structure of the waste bin and its cooperation with a suction motor to achieve solid-liquid separation, provided in one embodiment of this utility model;

[0043] Figure 13 A schematic diagram of the cross-sectional structure of the waste bin and its cooperation with a suction motor to achieve solid-liquid separation, provided for another embodiment of this utility model;

[0044] Figure 14 A schematic diagram of the structure of a combination of a waste bin, a suction motor as a negative pressure generating device, and a second negative pressure motor as a migration negative pressure generating device, provided for another embodiment of the present utility model;

[0045] Figure 15 for Figure 14 A schematic diagram of a solid-liquid separation structure combining a cross-section of the waste bin structure with a suction motor as a negative pressure generating device and a second negative pressure motor as a migration negative pressure generating device.

[0046] Figure 16 A schematic diagram of the structure of a combination of a waste bin, a suction motor as a negative pressure generating device, and a negative pressure pump as a migration negative pressure generating device, provided for another embodiment;

[0047] Figure 17 for Figure 16 A cross-section of the sludge tank structure and a schematic diagram of the solid-liquid separation structure combining a suction motor as a negative pressure generating device and a negative pressure pump as a migration negative pressure generating device.

[0048] Figure 18 This is a schematic diagram of a waste bin containing a garbage bag provided in one embodiment of the present invention;

[0049] Figure 19 This is a structural diagram of a floor scrubber provided in one embodiment of the present invention.

[0050] The labels in the attached diagram are explained as follows:

[0051] 10. Solid-liquid separation system; 100. Waste tank; 101. First chamber; 1011. Baffle wall; 1012. Waste bag; 102. Second chamber; 110. Waste inlet; 1100. First fluid outlet channel; 120. Liquid passage; 1201. First end; 1202. Second end; 1200. Second fluid outlet channel; 12001. Filter screen; 121. Flow channel lifting section; 130. Air passage; 20. Negative pressure generating device; 21. Migration negative pressure generating device; 200. Suction motor; 210. Air inlet; 300. Cleaning equipment; 500. Negative pressure pump; 600. Second negative pressure motor; 700. Separation structure. Detailed Implementation

[0052] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0053] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0054] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0055] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0056] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0057] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0058] Figures 1-19 The diagram shows one or more embodiments of the present invention.

[0059] In one embodiment, such as Figures 1-6As shown, the solid-liquid separation system 10 of the cleaning equipment includes a negative pressure generating device 20 and a waste tank 100. The waste tank 100 is provided with a waste inlet 110. The negative pressure generating device 20 includes a suction motor 200. The air inlet 210 and the waste inlet 110 of the suction motor 200 are connected, and the suction motor 200 is used to generate negative pressure to suck away the mixed waste on the floor to be cleaned.

[0060] The waste bin 100 includes a first chamber 101 for storing solid waste and a second chamber 102 for storing liquid waste. Mixed waste can enter the first chamber 101 through the inlet 110. It is understood that the mixed waste can include solid waste, liquid waste, and airflow. This mixed waste is first sucked into the first chamber 101 from the ground by a suction motor 200. The suction motor 200 generates negative pressure to guide the mixed waste from the inlet 110 into the first chamber 101. To achieve separate storage of solid and liquid waste, the waste bin 100 is provided with a liquid passage 120, which connects the first chamber 101 and the second chamber 102. It is understood that one end of the liquid passage 120 is connected to the first chamber 101, and the other end is connected to the second chamber 102. Specifically, the liquid passage 120 includes a first end 1201 connecting to the first chamber 101 and a second end 1202 connecting to the second chamber 102. The liquid passage 120 is configured to allow liquid debris and airflow to flow simultaneously from the first chamber 101 to the second chamber 102. If the liquid debris is initially drawn out only when the first chamber is full, only liquid debris and a small amount of airflow may be drawn into the second chamber at the same time. However, as the liquid level drops to a height near the first end of the liquid passage, more liquid debris and airflow are drawn into the second chamber simultaneously. Furthermore, if the liquid debris is drawn into the second chamber immediately upon entering the first chamber without waiting for it to accumulate to a high level, a relatively large amount of liquid debris and airflow will also be drawn into the second chamber simultaneously.

[0061] It should be noted that the form of the liquid passage 120 is not limited to the form shown in the attached figure. The liquid passage 120 can be a pipe, channel, through hole, or flow channel formed by the stacking of internal components of the waste tank 100 that can pass liquid waste and airflow. All of these should be within the definition of the liquid passage 120.

[0062] like Figures 5-12As shown, the solid-liquid separation system also includes a migration negative pressure generating device 21. The migration negative pressure generating device 21 acts on the second chamber 102 to generate a migration negative pressure. Under the drive of the migration negative pressure, a pressure difference is formed between the first chamber 101 and the second chamber 102, further creating a pressure difference between the first end 1201 and the second end 1202 of the liquid passage 120. This pressure difference can be an airflow pressure difference, a liquid pressure difference, or a fluid pressure difference, etc. Due to the existence of this pressure difference, liquid waste in the first chamber 101 can migrate through the liquid passage 120 to the second chamber 102 under the action of the pressure difference, achieving solid-liquid separation and storage.

[0063] The solid-liquid separation system 10 of this solution separates liquid waste from solid waste, preventing the continuous accumulation of mixed waste and thus avoiding the problem of large amounts of liquid waste being carried away by the airflow into the next stage of the air duct, causing sewage spraying or motor burnout.

[0064] like Figures 4-13 As shown, in some embodiments, the migration negative pressure generating device 21 is also a suction motor 200, sharing the same suction motor 200 with the negative pressure generating device 20. That is, the suction motor 200 serves as both the negative pressure generating device 20 and the migration negative pressure generating device 21. In implementation, the second chamber 102 can be connected to the air inlet 210 of the suction motor 200 to form an air passage 130. In the implemented scheme, the air passage 130 can be directly connected to the air inlet 210 of the suction motor, or it can be indirectly connected to the air inlet 210 to create negative pressure in the second chamber 102. While the air passage 130 primarily exhausts air, it can also discharge a small amount of liquid following the airflow. Because a liquid passage 120 is provided between the first chamber 101 and the second chamber 102, a pressure difference with a migrating negative pressure can be formed between the first end 1201 and the second end 1202, allowing liquid waste to flow from the first chamber 101 to the second chamber 102 through the liquid passage 120. Furthermore, the liquid passage 120 is configured to simultaneously allow liquid waste and airflow from the first chamber 101 to the second chamber 102, achieving the separate storage of solid and liquid waste in the mixed waste in the first chamber 101. The liquid passage 120 can be a pipe, a slit, a hole, or other structure that connects the two chambers. In some embodiments, the liquid passage 120 can be located inside the waste bin or extend outside the waste bin. In some of these implementations, the negative pressure exerted by the suction motor 200 on the second chamber 102 creates a negative pressure within it. This allows liquid waste from the first chamber 101 to be drawn into the second chamber 102 through the liquid passage 120. Simultaneously, a portion of the airflow from the first chamber 101 enters the second chamber 102 through the liquid passage 120 and is then sucked out by the suction motor 200. Figures 4-13The suction motor 200 shown draws suction from the second chamber 102. This design divides the internal space of the waste bin 100 into a first chamber 101 for solid waste and a second chamber 102 for liquid waste. The two chambers are connected by a liquid passage 120. A negative pressure mechanism cleverly guides the liquid waste from the first chamber 101 into the second chamber 102 for solid-liquid separation and storage. Furthermore, the design of the liquid passage 120 ensures that airflow enters the second chamber 102 along the passage, correcting the airflow path and eliminating turbulence. This reduces the risk of liquid waste being carried away by the airflow after entering the second chamber 102, thus minimizing liquid waste entering the next exhaust duct. This reduces the amount of wastewater sprayed from the cleaning equipment, lowers the risk of damage to the suction motor 200, and increases the equipment's lifespan.

[0065] like Figures 7-13 As shown, in another embodiment, a fluid outlet channel can be provided inside the waste bin 100, including a first fluid outlet channel 1100 and a second fluid outlet channel 1200. The first fluid outlet channel 1100 includes a liquid passage 120 and an air passage 130. This design allows the first fluid outlet channel 1100 to pass through the first chamber 101 and the second chamber 102. The second fluid outlet channel 1200 communicates with the first chamber 101. In implementation, the second fluid outlet channel 1200 can be located on the outer wall of the first chamber 101, such as a side wall, top wall, or bottom wall, or it can be designed within the space / gap between the first chamber 101 and the second chamber 102. Figure 13 As shown, the second fluid outlet channel 1200 can be directly connected to the suction motor 200 or indirectly connected, for example, through other components with a certain thickness for transition. Of course, considering the need to increase the negative pressure of the second fluid outlet channel, a direct connection design is preferred. Adding a thin mesh for transition can also be classified as a direct connection. The negative pressure generated by the suction motor 200 can act simultaneously / synchronously on the first fluid outlet channel 1100 and the second fluid outlet channel 1200, making the first chamber 101 form the main suction area to suck up mixed waste. At the same time, the air passage 130 is used to discharge the airflow in the second chamber 102, making the second chamber 102 form a negative pressure. In this way, the negative pressure of the first fluid outlet channel 1100 can drive the liquid waste from the first chamber 101 to the second chamber 102 along the liquid passage 120, realizing solid-liquid separation and storage. In other embodiments, the second fluid outlet channel 1200 may also be located near or on the outer wall of the second chamber 102, as long as the second fluid outlet channel 1200 is connected to the suction motor 200.

[0066] By designing a second fluid outlet channel 1200 parallel to the first fluid outlet channel 1100, the airflow is divided, which can reduce the amount of airflow entering the second chamber 102 from the first chamber 101, prevent more gas from entering and carrying away liquid waste in the second chamber 102, and further contribute to the stability of the airflow in the second chamber 102. To ensure a more stable airflow within the second chamber 102, the design ensures that the minimum cross-sectional area of ​​the liquid passage 120 is smaller than the minimum cross-sectional area of ​​the second fluid outlet passage 1200. Alternatively, the average width of the liquid passage 120 can be smaller than the average width of the second fluid outlet passage 1200. This design allows the main suction force of the suction motor 200 to be concentrated in the first chamber 101. This design enables the main suction force of the suction motor 200 to act directly on the first chamber 101 through the second fluid outlet passage 1200, thereby reducing the distance between the negative pressure suction source and the first chamber 101. This maximizes the protection of the air performance of the cleaning equipment, ensuring sufficient suction for cleaning work. The stronger suction force draws mixed waste into the first chamber 101, improving the cleaning performance of the cleaning equipment. Meanwhile, the first fluid outlet duct 1100 diverts a portion of the negative pressure suction from the suction motor 200. Based on Bernoulli's principle in fluid mechanics, the design utilizes the principle that higher flow velocity results in lower pressure. This principle is applied to achieve negative pressure in the second chamber 102, as the flow velocity at the suction motor inlet is higher than elsewhere. Experiments showed that this negative pressure does not need to occupy a large portion of the suction motor's negative pressure; a small amount is sufficient to create negative pressure in the second chamber 102. This drives the liquid waste in the first chamber 101 to flow into the second chamber 102, thus separating solid and liquid waste from the mixed waste for easier cleaning. Furthermore, because the negative pressure suction from the first fluid outlet duct 1100 only accounts for a small portion of the negative pressure suction from the suction motor 200... A small portion of the suction force, after the liquid waste flows into the second chamber 102, remains largely inside because the second chamber has a larger capacity for liquid waste. This allows the main suction force of the suction motor 200 to be applied to the first chamber 101 through the second fluid outlet 1100. The first fluid outlet 1100 is not where most of the negative pressure suction of the suction motor 200 is located, thus ensuring the stability of the airflow within the second chamber 102 and further reducing turbulence. Because the negative pressure suction within the second chamber 102 is small, it is insufficient to allow the liquid waste to flow out of the second chamber 102 and back into the suction motor 200 along with the airflow, thereby reducing the amount of liquid waste entering the suction motor 200 and perfectly solving the problems of wastewater spraying and motor burnout in cleaning equipment.

[0067] To prevent the second fluid outlet duct 1200 from being blocked by mixed debris, in some embodiments, a barrier wall 1011 can be provided in the first chamber 101 to prevent mixed debris from entering the second fluid outlet duct 1200, such as... Figure 9 As shown. The barrier wall 1011 can block most of the mixed waste. It can not only prevent most of the solid waste from clogging the second fluid outlet channel 1200, but also prevent most of the liquid waste from flowing out of the second fluid outlet channel 1200 and into the suction motor 200.

[0068] In one embodiment, to further prevent flow channel blockage, a filter screen 12001 can be provided in the second fluid outlet flow channel 1200, such as... Figure 12 As shown, filter 12001 is used to block solid waste from entering.

[0069] In one embodiment, in order to minimize the risk of liquid waste in the first chamber 101 entering the second fluid outlet channel 1200 and being carried into the suction motor, and to allow more liquid waste to be transferred into the second chamber 102 through the liquid passage 120, the inlet of the second fluid outlet channel 1200 can be located on the inner wall of the first chamber 101, or a higher position can be chosen. The second fluid outlet channel 1200 can extend from the inner wall of the first chamber 101 to the outer wall, allowing more space for liquid waste to settle and be guided into the second chamber 102 by the liquid passage 120, thereby preventing the suction motor 200 from sucking in settled liquid waste from the second fluid outlet channel 1200.

[0070] In one embodiment, the second fluid outlet channel 1200 and the first fluid outlet channel 1100 are independently arranged, and the second fluid outlet channel 1200 and the air passage 130 can be connected in parallel to the air inlet 210 of the suction motor. That is, the air outlets of the second fluid outlet channel 1200 and the air passage 130 can be arranged side-by-side and connected together to the air inlet 210 of the suction motor 200. The air outlets of the first fluid outlet channel 1100 and the second fluid outlet channel 1200 can be arranged side-by-side, or they can be mixed together and then sucked into the suction motor 200. In a specific implementation, a separate conduit can be provided as the air passage 130, or the air passage 130 can be formed in the waste bin 100 through an internal channel or an integrated channel, such as... Figures 9-12 The air passage 130 is formed in the waste bin 100 using an integrated channel method, etc.; regardless of the design method of the air passage 130, it can be extended to connect with the suction motor air inlet 210, so that it can connect with the suction motor 200.

[0071] To achieve a miniaturized design and save design space, in one embodiment, the second fluid outlet duct 1200 and the sewage inlet 110 are designed to be located on the same side of the sewage tank 100.

[0072] In one embodiment, the liquid passage 120 serves as the only airflow communication path between the first chamber 101 and the second chamber 102. This design can better improve the airtightness of the first chamber 101 and the second chamber 102 and help reduce turbulence in the airflow.

[0073] like Figure 9 As shown, to achieve more thorough solid-liquid separation of mixed waste, in the implementation of the scheme, the liquid passage 120 begins at the bottom of the first chamber 101. The design of the liquid passage 120 needs to include at least a flow channel lifting section 121, and then connects to the second chamber 102 after passing through at least part of the flow channel lifting section 121. The lifting of the flow channel can be vertical or inclined, continuous or through a step-like slow lifting, or a wave-like lifting, etc. Any change in the flow channel height should be considered as a flow channel lifting. This design can further correct the direction of the airflow entering the liquid passage 120 before it enters the second chamber 102, which plays a crucial role in reducing airflow turbulence. In the implementation of the scheme, the liquid passage 120 can connect the first chamber 101 and the second chamber 102 through L-shaped flow channel lifting, U-shaped (inverted U-shaped) flow channel lifting, Z-shaped flow channel lifting, etc. In one embodiment, the liquid passage 120 is elevated from the bottom of the first chamber 101 to the upper part of the second chamber 102 via an L-shaped or U-shaped flow channel. The inlet end of the liquid passage 120 within the second chamber 102 is located above the liquid surface, i.e., the second end is located above the liquid surface. This flow channel elevation design utilizes gravity and the Venturi effect to prevent backflow, which helps prevent liquid backflow. To further and more thoroughly prevent liquid diversion, a one-way valve (not shown) can be provided at one end of the liquid passage 120, allowing liquid to flow only from the first chamber 101 to the second chamber 102.

[0074] In other implementation designs, the liquid passage 120 can also be designed to connect the first chamber and the second chamber by first raising the flow channel and then lowering it, such as an inverted V shape. The raising and lowering of the flow channel can also further correct the airflow direction.

[0075] like Figures 14-15As shown, in another embodiment, the negative pressure generating device 21 is a second negative pressure motor 600, which is different from the above-mentioned suction motor 200 as the negative pressure generating device 21. The second negative pressure motor 600 has a similar function to the suction motor 200, both of which generate negative pressure. The second negative pressure motor 600 is connected to the second chamber 102 and generates negative pressure inside the second chamber 102 when the second negative pressure motor 600 is working. Under the action of the second negative pressure motor 600, the first end 1201 and the second end 1202 will also form a negative pressure, so that the liquid waste in the first chamber 101 flows from the liquid passage 120 to the second chamber 102 to achieve solid-liquid separation.

[0076] like Figures 16-17 As shown, in another embodiment, the migration negative pressure generating device 21 is a negative pressure pump 500. That is, the suction motor 200 acts as the negative pressure generating device 20, and the negative pressure pump 500 works in conjunction with the migration negative pressure generating device 21. Optionally, the negative pressure pump 500 can be installed inside the waste tank 100, or the negative pressure pump 500 can be installed outside the waste tank 100. The negative pressure pump 500 can be connected to / communicated with the second end 1202 of the liquid passage 120. When the negative pressure pump 500 is working, the suction effect it generates can create a migration negative pressure with airflow pressure difference between the first end 1201 and the second end 1202, so as to realize that liquid waste flows from the first chamber 101 to the second chamber 102. This method can also be understood as the migration negative pressure generating device 21 acting on the second chamber 102. Since the second end 1202 is located in the second chamber 102, the connection / communication between the negative pressure pump 500 and the second end 1202 is also equivalent to the connection / communication between the negative pressure pump 500 and the second chamber 102. In other embodiments, the negative pressure pump 500 can also be connected to the second chamber 102. The negative pressure pump 500 draws air into the second chamber 102, which can also create an airflow pressure difference between the first chamber 101 and the second chamber 102 to form a migration negative pressure. This also creates an airflow pressure difference migration negative pressure between the first end 1201 and the second end 1202 of the liquid passage 120, allowing liquid waste to flow from the first chamber to the second chamber, thus achieving solid-liquid separation.

[0077] It should be noted that the migration negative pressure generating device mentioned in this utility model should not be limited to the several implementation methods provided in this solution. There are other valves or pumps, as well as other alternative implementation methods. As long as the second chamber 102 and the first chamber 101 can form a pressure difference, such as the airflow or fluid forming a pressure difference, so that liquid waste can migrate from the first chamber to the second chamber, all implementation methods should be within the scope of the migration negative pressure generating device in this solution.

[0078] In one embodiment, the first chamber 101 is also provided with a garbage bag 1012 for collecting solid waste, such as... Figure 18 As shown, the garbage bag 1012 can be independently and detachably installed in the first chamber 101, which makes it easier to dispose of garbage and convenient to clean. The garbage bag 1012 can be selectively removed at any time.

[0079] In one embodiment, the first chamber 101 and the second chamber 102 are arranged horizontally side by side; in other embodiments, the first chamber 101 and the second chamber 102 may also be arranged in an upper and lower layered manner, such as the first chamber 101 on top and the second chamber 102 on the bottom, or the order may be reversed.

[0080] For ease of design, in one embodiment, the first chamber 101 and the second chamber 102 are independent of each other, and the first chamber 101 and the second chamber 102 can be detachably connected independently. The disassembly and installation of the first chamber 101 and the second chamber 102 are also independent of each other. In other embodiments, the waste bin 100 is internally separated into the first chamber 101 and the second chamber 102 by a partition structure 700, and the first chamber 101 and the second chamber 102 are integrally molded.

[0081] This solution also provides a cleaning device 300, which includes the aforementioned solid-liquid separation system 10. The cleaning device 300 includes a wet / dry vacuum cleaner and can be a floor scrubber, carpet cleaner, cleaning robot, countertop cleaner, or kitchen surface cleaner, etc. Figure 19 The diagram shows a floor scrubbing machine according to one of the embodiments.

[0082] In one embodiment of the cleaning device 300, such as Figures 1-3 As shown, the cleaning device 300 also includes a waste inlet pipe 400, which is connected to the suction motor 200 to guide the debris from the surface to be cleaned into the waste bin 100. The air passage 130 is directly connected to the waste inlet pipe 400. Under the negative pressure of the suction motor 200, the airflow in the second chamber 102 first enters the waste inlet pipe 400, then enters the first chamber 101 along the waste inlet pipe 400, and finally is sucked into the suction motor 200.

[0083] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0084] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A solid-liquid separation system for a cleaning device, comprising a waste tank and a negative pressure generating device, wherein the waste tank is provided with a waste inlet, characterized in that: The negative pressure generating device includes a suction motor, whose air inlet is connected to the sewage inlet, for generating negative pressure to suck up mixed waste from the ground; the sewage bin includes a first chamber for containing solid waste and a second chamber for containing liquid waste; the sewage bin is provided with a liquid passage connecting the first chamber and the second chamber; the liquid passage includes a first end connecting the first chamber and a second end connecting the second chamber; the migration negative pressure generating device acts on the second chamber to generate migration negative pressure, and under the drive of the migration negative pressure, a pressure difference is formed between the first end and the second end of the liquid passage, causing the liquid waste in the first chamber to migrate to the second chamber through the liquid passage; Furthermore, the liquid passage is configured to allow liquid waste and airflow to flow simultaneously from the first chamber to the second chamber, thereby achieving solid-liquid separation storage.

2. The solid-liquid separation system according to claim 1, characterized in that, The suction motor also serves as the negative pressure generating device and the migration negative pressure generating device. The waste bin is provided with a first fluid outlet channel, which includes a liquid passage and an air passage. The air passage connects the second chamber and the air inlet of the suction motor, so that the negative pressure of the suction motor acts on the second chamber, causing the first fluid outlet channel to form a migration negative pressure. Under the action of the migration negative pressure, the liquid waste in the first chamber flows to the second chamber through the liquid passage. At the same time, the airflow in the first chamber can enter the second chamber through the liquid passage and be sucked out, realizing solid-liquid separation and storage.

3. The solid-liquid separation system according to claim 2, characterized in that, The waste bin is also provided with a second fluid outlet channel; the second fluid outlet channel is connected to the air inlet of the suction motor; wherein, the negative pressure of the suction motor acts synchronously on the first fluid outlet channel and the second fluid outlet channel, so that the first chamber forms a main negative pressure suction area to suck up mixed waste; at the same time, the negative pressure of the first fluid outlet channel drives the liquid waste from the first chamber to flow from the first chamber to the second chamber along the liquid passage, realizing solid-liquid separation and storage.

4. The solid-liquid separation system according to claim 3, characterized in that, The minimum cross-sectional area of ​​the liquid passage is smaller than the minimum cross-sectional area of ​​the second fluid outlet passage, so that the main suction force of the suction motor is concentrated in the first chamber.

5. The solid-liquid separation system according to claim 4, characterized in that, The second fluid outlet channel is located on the side wall of the first chamber and is directly connected to the air inlet of the suction motor. The first chamber is also equipped with a barrier wall to prevent mixed waste from entering the second fluid outlet channel.

6. The solid-liquid separation system according to claim 5, characterized in that, The second fluid outlet channel is equipped with a filter screen, which is used to block solid waste from entering.

7. The solid-liquid separation system according to claim 4, characterized in that, The inlet of the second fluid outlet is located on the inner wall of the first chamber to avoid drawing in settled liquid waste.

8. The solid-liquid separation system according to claim 4, characterized in that, The first fluid outlet channel and the second fluid outlet channel are independently configured, and the second fluid outlet channel and the air passage are connected in parallel to the air inlet of the suction motor.

9. The solid-liquid separation system according to claim 8, characterized in that, The air passage is formed in the waste bin and extends to the air inlet of the suction motor, and is directly connected to the suction motor.

10. The solid-liquid separation system according to claim 9, characterized in that, The second fluid outlet and the sewage inlet are located on the same side of the sewage tank.

11. The solid-liquid separation system according to claim 2, characterized in that, The liquid passage is the only airflow connection path between the first chamber and the second chamber.

12. The solid-liquid separation system according to claim 2, characterized in that, The liquid passage begins at the bottom of the first chamber and connects to the second chamber after being raised by a flow channel containing at least a portion of it.

13. The solid-liquid separation system according to claim 12, characterized in that, The liquid passage is raised from the bottom of the first chamber to the upper part of the second chamber by an L-shaped or U-shaped flow channel, and the inlet end of the liquid passage in the second chamber is located above the liquid surface in the second chamber to prevent liquid backflow.

14. The solid-liquid separation system according to claim 2, characterized in that, One end of the liquid passage is equipped with a one-way valve, which only allows liquid to flow from the first chamber to the second chamber.

15. The solid-liquid separation system according to claim 1, characterized in that, The migration negative pressure generating device is a second negative pressure motor, which is connected to the second chamber. Under the action of the second negative pressure motor, migration negative pressure is formed at the first end and the second end.

16. The solid-liquid separation system according to claim 1, characterized in that, The migration negative pressure generating device is a negative pressure pump, which acts on the second chamber to create migration negative pressure at the first end and the second end.

17. The solid-liquid separation system according to claim 16, characterized in that: The negative pressure pump is connected to the second end; the negative pressure pump directly draws air from the second end; or, the negative pressure pump is connected to the second chamber, and the negative pressure pump draws air from the second chamber.

18. The solid-liquid separation system according to claim 1, characterized in that, The first chamber is also equipped with a garbage bag for collecting solid waste, which can be independently and detachably installed in the first chamber.

19. The solid-liquid separation system according to claim 1, characterized in that, The first chamber and the second chamber are arranged horizontally side by side, or the first chamber and the second chamber are arranged vertically in layers.

20. The solid-liquid separation system according to claim 19, characterized in that, The waste bin is divided into a first chamber and a second chamber by a partition structure, and the first chamber and the second chamber are integrally formed.

21. The solid-liquid separation system according to claim 19, characterized in that, The first chamber and the second chamber are independent of each other, and the first chamber and the second chamber can be detachably connected to each other independently.

22. A cleaning device, characterized in that, The cleaning equipment includes the solid-liquid separation system according to any one of claims 1-21, the cleaning equipment includes a wet and dry vacuum cleaner, and the cleaning equipment can be a floor scrubber, carpet cleaner, cleaning robot, tabletop cleaner or kitchen stove surface cleaner.

23. A cleaning device, characterized in that, The cleaning equipment includes a waste inlet pipe and a solid-liquid separation system as described in claim 3. The waste inlet pipe is connected to the suction motor to guide the garbage on the surface to be cleaned into the waste tank. The air passage is directly connected to the waste inlet pipe. Under the negative pressure of the suction motor, the airflow in the second chamber first enters the waste inlet pipe and is then sucked into the suction motor along the waste inlet pipe.

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