Water-air separation device, sewage recovery assembly and cleaning device

Abstract

The application discloses a water-gas separation device, a sewage recovery assembly and a cleaning equipment. The water-gas separation device comprises an outer body and an inner body. The outer body has a cavity, and an air inlet and a water outlet are arranged on the outer body and connected with the cavity and a liquid storage cavity respectively. The inner body extends into the cavity and has an air outlet at the lower end and connected with a negative pressure device. A centrifugal air duct is formed between the outer body and the inner body. When the negative pressure device works, the mixed gas flow in the sewage tank flows into the water-gas separation device through the air inlet. Under the joint action of centrifugal force and gravity, the water in the mixed gas flow is thrown to the inner wall of the outer body and flows to the liquid storage cavity, and the gas in the mixed gas flow is sucked into the air outlet. In the application, the centrifugal force and gravity of the mixed gas flow are utilized to realize the separation of the gas and the liquid. On the one hand, the application does not need a separation motor, and the cost is low. On the other hand, the application does not need to consume additional electric energy to realize the water-gas separation action, and the endurance time of the cleaning equipment is prolonged.

Description

Technical Field

[0001] This invention belongs to the field of cleaning equipment technology, specifically relating to a water-air separation device, a wastewater recovery component, and cleaning equipment. Background Technology

[0002] In existing cleaning equipment, to prevent water vapor from being drawn into the negative pressure fan component along with the airflow, a separation motor needs to be installed in the wastewater tank to drive the separation basket to rotate, thus separating water and air. The separated airflow flows to the fan component, while the liquid remains in the wastewater tank. This solution requires components such as the separation motor, resulting in a complex structure. On the one hand, this leads to higher production and maintenance costs for the cleaning equipment; on the other hand, the separation motor consumes additional electrical energy to achieve water-air separation, affecting the operating time of the cleaning equipment. Summary of the Invention

[0003] Therefore, the technical problem to be solved by the present invention is to provide a water-gas separation device, a wastewater recovery component, and a cleaning equipment that does not require an electric drive mechanism and has a good water-gas separation effect.

[0004] To solve the above-mentioned technical problems, the present invention provides a water-air separation device for cleaning equipment, the water-air separation device comprising: An external body having a cavity, the external body including side walls and a bottom wall, the side walls being located on the outer periphery of the cavity, the bottom wall being located at the lower end of the cavity, an air inlet being provided on the side walls, and a water outlet being provided on the side walls and / or the bottom wall, the air inlet connecting the cavity to a chamber for containing wastewater, and the water outlet connecting the cavity to a storage chamber; and... The inner body has its lower end extending into the cavity. There are gaps between the inner body and the side wall and the bottom wall. An air outlet is provided at the lower end of the inner body. The air outlet is connected to a negative pressure device. A centrifugal air duct is formed between the periphery of the inner body and the side wall. The centrifugal air duct connects the air inlet and the air outlet.

[0005] Optionally, the outer body and the inner body are respectively arranged in a cylindrical shape extending axially in the vertical direction, and the centrifugal air duct is distributed in a ring between the inner periphery of the outer body and the outer periphery of the inner body.

[0006] Optionally, the external body further includes a guide wall disposed on the outside of the side wall, the guide wall having a guide channel, the air inlet end of the guide channel communicating with the cavity, the air outlet end communicating with the air inlet, and the guide channel extending at least in a section adjacent to the air outlet in a direction parallel to the tangent of the centrifugal air duct.

[0007] Optionally, the guide wall includes an inner wall section, the inner side of which is adjacent to the guide channel and extends outward from the air inlet along the tangential direction of the side wall.

[0008] Optionally, the air inlet is provided, and the air inlet is located on one side of the air outlet in the tangential direction; or, The air inlet is provided in two parts, and both air inlets are located on the side of the air outlet.

[0009] Optionally, the air outlet is not higher than the lowest point of the air inlet.

[0010] Optionally, the water outlet is located on the side wall and adjacent to the bottom wall.

[0011] Optionally, the inner body has a flange protruding towards the side wall, and the flange is arranged around the outer periphery of the air outlet.

[0012] To address the aforementioned technical problems, the present invention provides a wastewater recovery component for use in cleaning equipment, the wastewater recovery component comprising: A sewage tank has a cavity for holding sewage; A suction tube connecting the cavity and the suction port of the cleaning assembly; and, The water-gas separation device described above is located at the upper end of the sewage tank.

[0013] Optionally, the cavity also includes a cover, the upper side of which is open, the cover being detachably placed over the open, and the water-air separation device being disposed on the cover.

[0014] Optionally, the cover has an installation cavity located above the container cavity, the water-air separation device is disposed in the installation cavity, and an exhaust cavity is also formed in the installation cavity to connect the container cavity and the air inlet. The exhaust cavity is located on the radial side of the water-air separation device, and an exhaust port is opened on the lower side of the cover to connect the exhaust cavity and the container cavity.

[0015] Optionally, the suction pipe extends vertically, with the lower end forming a suction port and the upper end forming a sludge inlet within the cavity. The sludge inlet is located below the cover, and a separator is provided between the sludge inlet and the exhaust port. The separator extends downward from the lower side of the cover, so that the airflow flowing into the cavity from the sludge inlet bypasses the separator downward and then flows upward to the exhaust port.

[0016] Optionally, the air inlet area of ​​the exhaust port is S1, and the area of ​​the suction port is S0, where S1 is greater than or equal to 2S0; and / or, The air inlet area is S2, and the area of ​​the suction port is S0, where S2 is less than S0.

[0017] Optionally, it also includes a solid-liquid separation screen, which is disposed in the cavity to divide the cavity into an upper region and a lower region arranged sequentially from top to bottom, and the sewage inlet is located in the upper region.

[0018] Optionally, the wastewater recycling assembly has an upright state extending vertically along the direction of gravity and a horizontal state extending forward and backward along the direction of gravity. In the horizontal state, the front side of the wastewater tank is higher than the rear side, and the suction port and the exhaust port are both located relatively close to the front side of the wastewater tank, so that in the horizontal state, the suction port and the exhaust port are both higher than the liquid level in the cavity.

[0019] Optionally, a baffle plate is provided at the bottom of the cavity, and in the flat state, the upper side of the baffle plate is lower than the lowest point of the exhaust port.

[0020] Optionally, the mounting cavity also includes an overflow cavity, and an overflow port is provided on the lower side of the cover to connect the overflow cavity and the container. The overflow port is located behind the exhaust port so that, in the lying position, the liquid in the container flows into the overflow cavity from the overflow port. A wave-damping net is provided between the overflow port and the solid-liquid separation net and located in the container. The overflow port, the wave-damping net, and the solid-liquid separation net are distributed at intervals from top to bottom.

[0021] Optionally, the overflow chamber is located behind the exhaust chamber, and the overflow chamber and the exhaust chamber are separated by a water-blocking wall. The water-blocking wall extends downward into the cavity and is arranged around the outer periphery of the overflow port together with the partition. The water-blocking wall, the partition and the wave-damping net are arranged in pairs and connected.

[0022] Optionally, the mounting cavity further includes the liquid storage cavity, and the liquid storage cavity and the exhaust cavity are spaced apart in the circumferential direction of the water-air separator; and / or, The air inlet is located at the upper front end of the exhaust cavity.

[0023] To address the above problems, the present invention provides a cleaning device, comprising: A cleaning component, wherein the cleaning component is provided with a suction port; As described above in the wastewater recovery assembly, wherein the suction pipe connects the suction port and the cavity; and... A negative pressure device is located above the wastewater recycling assembly and is connected to the air outlet.

[0024] The technical solution provided by this invention has the following advantages: The water-air separator comprises an outer body and an inner body. The outer body has a cavity with an air inlet connecting to the cavity and a water outlet connecting to the liquid storage cavity. The inner body extends into the cavity and has an air outlet at its lower end connecting to a negative pressure device. A centrifugal duct is formed between the outer and inner bodies. When the negative pressure device is working, the mixed airflow above the liquid surface of the sewage tank flows into the water-air separator from the air inlet under the action of negative pressure. In the centrifugal duct, it flows towards the air outlet along a roughly spiral trajectory. Under the combined action of centrifugal force and gravity, the water in the mixed airflow is thrown onto the inner wall of the outer body and then flows from the water outlet into the liquid storage cavity, which is separated from the cavity. The gas in the mixed airflow is drawn into the air outlet and flows downstream to the negative pressure device.

[0025] In the embodiments provided by the present invention, the wastewater recycling component adopts an active cyclone separation method to separate the water and air in the mixed airflow flowing towards the blower component. The separation of gas and liquid is achieved by utilizing the centrifugal force and gravity generated by the mixed airflow itself as it flows through the water and air separation device. On the one hand, there is no need for components such as separation motors, which reduces costs and facilitates maintenance. On the other hand, no additional power is required for the water and air separation action, which can extend the operating time of the cleaning equipment. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a three-dimensional structural diagram of the first embodiment of the wastewater recycling component provided by the present invention; Figure 2 for Figure 1 A three-dimensional exploded view of the wastewater recycling component; Figure 3 for Figure 1 A cross-sectional view of the wastewater recovery component from front to back, showing the wastewater recovery component in an upright position; Figure 4 for Figure 1 A cross-sectional view of the wastewater recovery component in the horizontal direction, showing the wastewater recovery component lying flat. Figure 5 for Figure 2 A three-dimensional structural diagram of a water-gas separation unit; Figure 6 for Figure 5 3D exploded view of the water-gas separation unit; Figure 7 for Figure 2 A three-dimensional structural diagram of the wastewater tank; Figure 8 Bit Figure 2 A partial three-dimensional structural diagram of the wastewater recycling component; Figure 9 This is a three-dimensional structural diagram of the second embodiment of the wastewater recycling component provided by the present invention; Figure 10 for Figure 9 A three-dimensional exploded view of the wastewater recycling component; Figure 11 for Figure 10 3D structural exploded view of the water-gas separation unit Figure 12 Bit Figure 9 A cross-sectional view of the wastewater recovery component from front to back, showing the wastewater recovery component in an upright position; Figure 13 for Figure 9 A cross-sectional view of the wastewater recovery component in the horizontal direction, showing the wastewater recovery component lying flat.

[0028] Explanation of reference numerals in the attached figures: 1-Wastewater recovery component; 10-Water-air separator; 101-Cavity; 102-Centrifugal air duct; 103-Air inlet; 104-Water outlet; 105-Air outlet; 11-External body; 111-Side wall; 112-Bottom wall; 12-Internal body; 121-Flanged edge; 13-Guide wall; 130-Guide channel; 131-Air inlet end; 132-Air outlet end; 14-Filter screen; 20-Wastewater tank; 21-Cavity; 211- Upper section; 212-Lower section; 30-Cover; 301-Exhaust vent; 302-Overflow vent; 31-Cover body; 32-Cover cap; 310-Installation cavity; 311-Exhaust cavity; 312-Liquid storage cavity; 313-Overflow cavity; 40-Suction pipe; 41-Sewage suction port; 42-Sewage inlet; 50-Support cylinder; 51-Divider; 52-Solid-liquid separation net; 53-Wave net; 54-Water barrier; 60-Wave baffle; 70-Wave net. Detailed Implementation

[0029] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0030] It should be noted that the terms "first," "second," etc., in the specification, claims, and drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0031] In this invention, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0032] This invention provides a cleaning device with a wastewater recovery function. The specific type of the cleaning device is not limited, and it can be, for example, a mopping robot, a sweeping robot, or a floor scrubber. The cleaning device includes a cleaning component, a wastewater recovery component 1, and a negative pressure device. The cleaning component has a suction port connected to the negative pressure device, used to extract wastewater from the surface being cleaned by the cleaning device under the action of the negative pressure device. After the wastewater enters the wastewater recovery component 1, gas-liquid separation occurs. Solid impurities and water are stored in the wastewater recovery component 1, while the airflow is drawn downstream to the negative pressure device under the action of negative pressure. The cleaning component may also include cleaning parts such as a rag, a roller brush, or an adhesive strip, and may also include a water spray structure, a cleaning liquid dispenser, or other liquid dispensing parts to ensure thorough cleaning of the surface being cleaned by the cleaning device. The structure and material of the wastewater recovery component 1 are not limited, but it at least includes a wastewater tank 20 for storing water and a water-air separation device 10 for separating water in the airflow. Negative pressure devices are used to provide negative pressure to drive the flow of fluids (including sewage, mixed gases, and airflows). Their specific type is not limited; for example, they can be fan components or vacuum pumps.

[0033] Please see Figures 1 to 8 This invention provides a first embodiment of a water-air separation device 10 applied to the aforementioned cleaning equipment, and a wastewater recovery component 1 including the water-air separation device 10. In one embodiment provided by this invention, the cleaning equipment may be a floor scrubber. In the following description, the technical solution provided by this invention will be specifically illustrated using a floor scrubber as the cleaning equipment. It is understood that the specific solutions of the water-air separation device 10 and wastewater recovery component 1 provided by this invention are not limited to floor scrubbers, but can also be applied to other types of cleaning equipment provided by this invention.

[0034] In one embodiment, the cleaning device may include an operating handle. A cleaning component is disposed at the lower end of the operating handle for cleaning close to the ground. A wastewater recovery component 1 and a negative pressure device are disposed on the handle for easier operation when holding the operating handle for cleaning. Preferably, the operating handle and the cleaning component are rotatably connected, so that the cleaning device can have a normal working state with the operating handle upright, and a low-position working state with the operating handle rotated downward to be substantially parallel to the ground, or with only a small angle to the ground. In the low-position working state, the cleaning component can be easily inserted into crevices such as under furniture, thereby achieving thorough cleaning of hard-to-reach areas and improving the user experience.

[0035] It should be noted that, unless otherwise specified, the descriptions of orientation in this invention apply only to the cleaning equipment in normal use and under normal working conditions. Under specific circumstances, they may also apply to the cleaning equipment in a low-position working condition. However, all directional descriptions do not apply to the cleaning equipment during production, assembly, debugging, transportation, etc.

[0036] Please see Figure 1 and Figure 2 The wastewater recovery assembly 1 provided by the present invention includes a wastewater tank 20, a suction pipe 40, and a water-air separation device 10. The shape and material of the wastewater tank 20 are not limited, and it has a cavity 21 for storing wastewater. The suction pipe 40 connects the cavity 21 and the suction port of the cleaning assembly, so that the sewage from the cleaning surface is sucked into the suction port and flows into the cavity 21. The water-air separation device 10 is disposed at the upper end of the wastewater tank 20 and is used to absorb the mixed airflow (containing water and gas) above the liquid surface in the cavity 21. Under the action of the water-air separation device 10, the mixed airflow is separated into gas and liquid, wherein the gas continues to flow to the negative pressure device, while the liquid is left in the wastewater recovery assembly 1.

[0037] The following describes specific embodiments of the water-air separation device 10 provided by the present invention. The directional descriptions apply to the cleaning equipment in its normal operating state. The up-down direction refers to a direction approximately parallel to the direction of gravity, or at an angle not exceeding 45 degrees to the direction of gravity. Up refers to the direction extending away from gravity, and down refers to the direction extending towards gravity. Furthermore, the descriptions of high and low are all based on the direction of gravity.

[0038] Please refer to the following: Figures 2 to 6In one embodiment, the water-air separation device 10 provided by the present invention includes an outer body 11 and an inner body 12. The outer body 11 has a cavity 101, preferably arranged in a cylindrical space extending axially in the vertical direction, such as a cylinder, an elliptical cylinder, or an irregular cylinder. Preferably, the inner wall of the cavity 101 is arc-shaped to reduce airflow resistance in the cavity 101 and to facilitate the generation of centripetal force. The outer body 11 includes side walls 111 and a bottom wall 112. A side wall 111 extends circumferentially around the cavity 101, and a bottom wall 112 is located at the lower end of the cavity 101. An air inlet 103 is provided on the side wall 111, and a water outlet 104 is provided on the side wall 111 and / or the bottom wall 112. The air inlet 103 connects the cavity 101 to the chamber 21 of the wastewater tank 20, and the water outlet 104 connects the cavity 101 to the liquid storage chamber 312. The liquid storage chamber 312 is separated from the chamber 21 and is open to the atmosphere. The lower end of the inner body 12 extends into the cavity 101. There is a gap between the inner body 12, the side wall 111, and the bottom wall 112. An air outlet 105 is provided at the lower end of the inner body 12. The air outlet 105 is used to connect to the negative pressure device. The outer periphery of the inner body 12 and the side wall 111 form a centrifugal air duct 102. The specific shape of the outer periphery of the inner body 12 can also be various, as long as it can define a ring-shaped channel together with the inner side of the side wall 111. Preferably, the outer periphery of the inner body 12 is arc-shaped. The outer body 11 and the inner body 12 are respectively arranged in a cylindrical shape extending axially in the vertical direction. The centrifugal air duct 102 is distributed in a ring between the inner periphery of the outer body 11 and the outer periphery of the inner body 12. Preferably, the centrifugal air duct is basically arranged in a circular space so that the airflow therein is guided to flow around a circular trajectory and generate centrifugal force. The centrifugal duct 102 connects the air inlet 103 and the air outlet 105. Preferably, the sidewall 111 of the outer body 11 is cylindrical and the inner body 12 is cylindrical, so that the cross-section of the centrifugal duct 102 is basically annular. This facilitates manufacturing and provides a centrifugal duct 102 with the least resistance and the largest flow rate in a minimal volume, which is beneficial to airflow and the generation of centripetal force.

[0039] In this embodiment, when the negative pressure device is working, the mixed airflow above the liquid surface in the cavity 21 of the sewage tank 20 flows into the water-air separator 10 from the air inlet 103 under the action of negative pressure. In the centrifugal air duct 102, it flows towards the air outlet 105 along a roughly spiral trajectory. Under the combined action of centrifugal force and gravity, the water in the mixed airflow is thrown onto the inner wall of the outer body 11, and then flows into the storage chamber 312, which is separated from the cavity 21, from the water outlet 104. The gas in the mixed airflow is sucked into the air outlet 105 in the center of the cavity 101 and flows to the negative pressure device downstream. The remaining liquid also falls onto the bottom wall 112 of the cavity 101 under the action of gravity. In this embodiment, the wastewater recycling component 1 adopts an active cyclone separation method. The water-air separation device 10 separates the mixed airflow flowing towards the blower component. The gas-liquid separation is achieved by utilizing the centrifugal force and gravity generated by the mixed airflow itself as it flows through the water-air separation device 10. On the one hand, there is no need for components such as separation motors, which reduces costs and facilitates maintenance. On the other hand, no additional power is required for the water-air separation action, which can extend the operating time of the cleaning equipment.

[0040] Furthermore, please refer to the following: Figure 3 , Figure 5 and Figure 6 The air outlet 105 is not higher than the lowest point of the air inlet 103. In this way, the mixed airflow flowing into the centrifugal air duct 102 will not immediately flow into the air outlet 105. Instead, it will undergo sufficient gas-liquid separation in the centrifugal air duct 102 through centrifugal force to obtain a dry airflow free of water. The dry airflow will then flow downward and then upward into the air outlet 105. In this way, under the action of gravity, the liquid in the mixed airflow is more likely to be deposited into the cavity 101 and flow into the liquid storage cavity 312, instead of flowing into the air outlet 105, thus enhancing the separation effect of the water-air separation device 10.

[0041] In another embodiment, please refer to [reference needed]. Figure 3 , Figure 5 and Figure 6 The inner body 12 has a flange 121 protruding towards the side wall 111, and the flange 121 is arranged around the outer periphery of the air outlet 105. In this embodiment, the airflow entering through the air inlet 103 may be partially blown to the outer peripheral surface of the inner body 12. At this time, the liquid accumulates on the outer peripheral surface of the inner body 12. Under the action of the flange 121, it will not be sucked into the air outlet 105, but will be thrown to the inner side of the side wall 111 under the guidance of the flange 121 and the centripetal force of the airflow. In this way, the liquid is further prevented from being sucked into the air outlet 105, and the separation effect of the water-air separation device 10 is enhanced.

[0042] In another embodiment, please refer to [reference needed]. Figure 3 , Figure 5 and Figure 6The outlet 104 is located on the side wall 111 and is adjacent to the bottom wall 112. In this embodiment, the liquid storage chamber 312 is located on one side of the water-air separator 10 in the radial direction and is connected to the chamber 101 through the outlet 104 located at the bottom of the side wall 111, thereby preventing liquid residue in the water-air separator and making the overall structure of the wastewater recovery assembly 1 more compact.

[0043] It should be noted that the above three embodiments can be implemented individually or in combination.

[0044] Based on the above embodiments, please continue to refer to... Figure 3 Figure 5 and Figure 6 The external main body 11 also includes a guide wall 13 disposed outside the side wall 111. The guide wall 13 has a guide channel 130. The air inlet end 131 of the guide channel 130 is used to connect to the cavity 21, and the air outlet end 132 is used to connect to the air inlet 103. The guide channel 130 extends at least in a direction parallel to the tangential direction of the centrifugal duct 102 in a section adjacent to the air outlet end 132. In this embodiment, the guide channel 130 guides the mixed gas flowing into the centrifugal duct 102 from the cavity 21, so that the airflow enters the centrifugal duct 102 tangentially, forming a high-velocity airflow. Under the guidance of the internal structure of the centrifugal duct 102, the airflow follows a spiral trajectory, making the airflow velocity in the centrifugal duct 102 faster and the centrifugal force greater, thereby enhancing the water-gas separation effect of the water-gas separation device 10.

[0045] Preferably, the guide wall 13 includes an inner wall section, the inner side of which is adjacent to the guide channel 130 and extends outward tangentially from the air inlet 103 along the side wall 111. In this way, the inner wall section effectively guides the airflow entering the air inlet 103, accelerating the airflow tangentially into the centrifugal air duct 102, and then flowing along a circular or spiral trajectory, generating centrifugal force capable of dislodging water and impurities within it.

[0046] Optionally, one air inlet 131 is provided, located on one side of the air outlet 132 in the tangential direction, thereby generating a high-velocity airflow in the guide channel. Alternatively, two air inlets 131 may be provided, both located on the side of the air outlet 132. Preferably, the two air inlets 131 are located on opposite sides of the air outlet 132 in the tangential direction, thereby increasing the airflow rate of the centrifugal duct 102 and improving the exhaust speed of the water-air separator 10.

[0047] Preferably, the filter 14 is located at the air inlet 131. This prevents solid impurities from flowing into the water-air separator 10 with the mixed gas, making the interior of the water-air separator 10 cleaner, reducing the frequency of cleaning by the user, and improving the user experience.

[0048] In one embodiment, the wastewater recycling assembly 1 includes a cover 30, with the upper side of the cavity 21 being open. The cover 30 is detachably installed over the open side, and the water-air separation device 10 is disposed on the cover 30. Thus, by making the cover 30 detachable, the interior of the cavity 21 can be thoroughly cleaned, and the water-air separation device 10 can be disassembled for cleaning and maintenance.

[0049] Preferably, the cover 30 has a mounting cavity 310 located above the cavity 21. The water-gas separator 10 is disposed within the mounting cavity 310. An exhaust cavity 311 is also formed within the mounting cavity 310, connecting the cavity 21 and the air inlet 131. The exhaust cavity 311 is located radially to the side of the water-gas separator 10. An exhaust port 301 connecting the exhaust cavity 311 and the cavity 21 is opened on the lower side of the cover 30. In this embodiment, the cover 30 also integrates an exhaust cavity 311 connecting the guide channel 130 and the cavity 21. The mixed gas in the cavity 21 first passes through the exhaust cavity 311 with a reduced cross-section and then flows into the guide channel 130 with a further reduced cross-section. This increases the flow velocity of the mixed gas, resulting in a faster airflow velocity and greater centripetal force, thereby enhancing the water-gas separation effect of the water-gas separator 10.

[0050] Optionally, please refer to Figure 2 The cover 30 includes a cover body 31 and a cap portion 32. The mounting cavity 310 is formed in the cover body 31 and is open at the top. The cap portion 32 covers the upper side of the cover body 31. The outer body 11 is integrally formed with the cover body 31, and the upper end of the inner body 12 is connected to the cap portion 32. In this embodiment, the cover 30 is designed to be detachable, allowing the cap to be removed for cleaning of the internal water-air separation device 10 and various cavities. Furthermore, the integral formation of the outer body 11 with the cover body 31 improves assembly efficiency and allows the outer body 11 to share materials with the cover 30, saving space within the cover 30 and resulting in a more compact and smaller wastewater recycling assembly 1.

[0051] In a preferred embodiment, the mounting cavity 310 further includes a liquid storage cavity 312, which is spaced apart from the exhaust cavity 311 in the circumferential direction of the water-air separation device 10. Thus, the liquid storage cavity 312 is constructed to be completely separated from the container 21 and is arranged side-by-side with the exhaust cavity 311 and the water-air separation device 10, reducing the thickness of the cover 30 while facilitating simultaneous cleaning and improving the user experience.

[0052] Furthermore, the suction pipe 40 extends vertically and can be located inside or outside the sewage tank 20. Preferably, the suction pipe 40 is attached to one side of the sewage tank 20. The lower end of the suction pipe 40 forms a suction port 41 for connecting to the suction port, and the upper end of the suction pipe 40 forms a sewage inlet 42 located within the cavity 21. The sewage inlet 42 is spaced apart from the lower side of the cover 30 and is completely offset from the exhaust port 301 in the vertical direction. In this way, the mixed sewage is sucked into the suction pipe 40 through the cleaning component. Under the action of gravity, most of the liquid and solid impurities fall into the cavity 21, while the mixed airflow containing a small amount of liquid flows into the exhaust chamber 311 and towards the water-air separator 10.

[0053] For preferred options, please refer to [link / reference]. Figure 2 and Figure 3 A separator 51 is provided between the sewage inlet 42 and the exhaust outlet 301. The separator 51 extends downward from the lower side of the cover 30, so that the airflow flowing from the sewage inlet 42 into the cavity 21 bypasses the separator 51 downwards and then flows upwards to the exhaust outlet 301. In this way, the separator 51 guides the airflow and prolongs the flow path of the mixed airflow. During the flow of the mixed airflow, most of the water and solid impurities fall into the cavity 21, while the mixed airflow with a small amount of water flows into the exhaust cavity 311 and towards the water-air separator 10.

[0054] Please see Figure 3The dashed arrows in the figure indicate the flow path of the fluid in the wastewater recovery assembly 1. The sewage is sucked into the cavity 21 from the suction pipe 40. Under the guidance of the separator 51, it first flows downward and then upward to the exhaust port 301. Most of the solid impurities and liquid in the sewage fall to the bottom of the cavity 21 before flowing into the exhaust port 311. Then, the mixed airflow with some liquid flows into the exhaust port 311 and flows into the centrifugal air duct 102 in the water-air separation device 10 under the guidance of the guide channel 130. Under the action of centrifugal force and gravity, the water and liquid are separated. The liquid flows into the storage cavity 312 under the action of centrifugal force, and the gas flows to the negative pressure device downstream through the air outlet 105. In existing technologies, even separation baskets cannot guarantee complete water-air separation. It is still necessary to install a HEPA filter upstream of the fan components to absorb water. HEPA filters have low gas throughput and high suction loss. After long-term use, HEPA filters become clogged, which will further reduce suction power. On the other hand, water-air separation is more thorough, and ordinary filter sponges can be used afterward. Compared with HEPA filters, filter sponges have high gas throughput, low suction loss, improve the suction power of the cleaning equipment, and are less prone to clogging.

[0055] Please see Figure 7 In a preferred embodiment, a portion of the upper wall of the suction pipe 40 is lower than the inlet 42, so that the upper end of the suction pipe 40 forms the inlet 42, which is oriented away from the separator 51. In this embodiment, the inlet 42 is configured to face a horizontal direction away from the separator 51, or parallel to the separator 51. This extends the path of the waste liquid flowing from the cavity 21 to the exhaust port 301, allowing as much water as possible to fall to the bottom of the cavity 21 and reducing the amount of liquid entering the water-air separator 10.

[0056] Based on the above embodiments, the air inlet area of ​​the exhaust port 301 is S1, and the area of ​​the suction port 41 is S0, where S1 is greater than or equal to 2S0. This reduces the flow velocity of the fluid flowing into the container from the suction port 41, allowing more liquid and solid impurities to fall to the bottom of the cavity 21. Furthermore, the air inlet area of ​​the air inlet end 131 is S2, where S2 is less than S0. Thus, the airflow flowing into the guide channel 130 after passing through the exhaust cavity 311 is accelerated due to the reduced cross-section, increasing the airflow velocity entering the water-air separator 10, thereby enhancing the centrifugal force in the water-air separator 10 and improving the water-air separation effect.

[0057] Preferably, the wastewater recycling device further includes a solid-liquid separation net 52, which is disposed within the cavity 21 to divide the cavity 21 into an upper region 211 and a lower region 212 arranged sequentially from top to bottom. The wastewater inlet 42 is located in the upper region 211. Thus, solid waste discharged from the wastewater inlet 42 settles on the upper part of the solid-liquid separation net 52 under gravity. When cleaning the wastewater tank 20, the solid-liquid separation net 52 can be removed to clean solid impurities separately, while the wastewater can be directly poured into the sewer without worrying about sewer blockage, improving the user experience.

[0058] Please refer to the following: Figure 3 and Figure 4 The wastewater recovery assembly 1 has an upright state extending vertically along the direction of gravity and a horizontal state extending horizontally along the direction of gravity. In the horizontal state, the front of the wastewater tank 20 is higher than the rear, and the suction port 41 and the exhaust port 301 are both positioned relatively close to the front of the wastewater tank 20, so that in the horizontal state, both the suction port 41 and the exhaust port 301 are higher than the liquid level in the cavity 21. In this embodiment, both vertical and horizontal extension along the direction of gravity and horizontal extension along the direction of gravity include cases where the extension is completely parallel to the direction of gravity and cases where the extension forms an angle with the direction of gravity, with the angle not exceeding 45 degrees. The upright state corresponds to the normal working state of the cleaning equipment, and the horizontal state corresponds to the low-position working state of the cleaning equipment. Figure 3 This diagram shows an embodiment of the wastewater recycling assembly 1 in its upright operating state. Figure 4 The diagram shows an embodiment of the wastewater recovery assembly in its horizontal operating state. The wavy dashed lines in the diagram indicate the distribution of the wastewater recovery assembly 1 in the liquid submerged. Figure 3 As shown, in the low-position working state, the wastewater recovery component 1 rotates downward relative to the upright working state, with the front side higher than the rear side. The highest liquid level in the wastewater tank 20 is set below the lowest point of the suction port 41 and the exhaust port 301. This prevents the airflow channel from being occupied by liquid, affecting suction, and allows the cleaning equipment to normally suck up the wastewater from the cleaning surface in the horizontal working state. Preferably, the air inlet 131 is located at the upper front end of the exhaust chamber 311. This extends the flow path of the mixed airflow within the exhaust chamber 311, allowing more liquid to fall back into the container 21 under gravity. It also minimizes the flow of large amounts of liquid from the guide channel 130 into the water-air separator 10 in the horizontal working state.

[0059] Based on the previous embodiment, the wastewater recycling component 1 provided by the present invention also has an anti-surge structure to prevent waves generated by the movement of the cleaning equipment during the lying-down state from flowing into the exhaust channel and being sucked into the negative pressure device. Specifically, in one embodiment, please refer to... Figure 4A wave deflector 60 is provided at the bottom of the cavity 21, protruding upwards. In the flat position, the upper side of the wave deflector 60 is lower than the lowest point of the exhaust port 301. In this embodiment, the wave deflector 60 serves to suppress waves. Water may collide with the bottom of the cavity 21, generating upward surging waves. The wave deflector 60 can disperse these waves, ensuring that the wave crest does not exceed the exhaust port 301, thereby preventing wave surges.

[0060] Furthermore, please continue to refer to 3 and Figure 6 The mounting cavity 310 also includes an overflow cavity 313. An overflow port 302, connecting the overflow cavity 313 and the container 21, is provided on the lower side of the cover 30. The overflow port 302 is located behind the exhaust port 301, allowing liquid in the container 21 to flow into the overflow cavity 313 from the overflow port 302 in the lying-down state. In this embodiment, the remaining space within the cover 30 is used to construct an overflow cavity 313 positioned lower than the exhaust port 311 in the lying-down working state, allowing water to flow into the overflow cavity 313 without accumulating excessively and flowing into the exhaust port 311. Thus, the extra space in the cover 30 absorbs any excess wastewater that may occur in the lying-down working state, preventing surges.

[0061] For optimal results, please refer to the following: Figure 3 and Figure 8 A wave-damping net 53 is provided within the cavity 21 between the overflow outlet 302 and the solid-liquid separation net 52. The overflow outlet 302, the wave-damping net 53, and the solid-liquid separation net 52 are distributed at intervals from top to bottom. In this embodiment, the wave-damping net 53 blocks solid impurities outside the overflow cavity 313, making the overflow cavity 313 easier to clean and improving the user experience. At the same time, the wave-damping net 53 also plays a role in suppressing wave height, further improving the anti-surge effect.

[0062] Based on the previous embodiment, please continue to refer to Figure 8 The overflow chamber 313 is located behind the exhaust chamber 311. The overflow chamber 313 and the exhaust chamber 311 are separated by a water-blocking wall 54. The water-blocking wall 54 extends downward into the cavity 21 and, together with the separator 51, surrounds the outer periphery of the overflow outlet 302. The water-blocking wall 54, the separator 51, and the anti-surge net 53 are arranged in pairs and connected. In this embodiment, the water-blocking wall 54, the separator 51, and the anti-surge net 53 enclose a space on the lower side of the anti-surge outlet. This space further accommodates more liquid storage space that can be completely separated from the exhaust chamber 311, improving the anti-surge effect of the sewage recovery device.

[0063] Further, please refer to Figure 8The wastewater recycling device also includes a support cylinder 50 with an open front side. The support cylinder 50 is connected to the lower side of the cover 30 and is integrally formed with the separator 51, the water-blocking wall 54, the anti-wave net 53, and the solid-liquid separation net 52. In this embodiment, the support is fixed to the lower side of the cover 30, so that when the cover 30 is installed on the upper side of the wastewater tank 20, the support is inserted into the wastewater tank 20. When the cover 30 is removed, the support, the anti-wave net 53, and the solid-liquid separation net 52 are removed and washed together, making it convenient for users to clean.

[0064] Please see Figures 9 to 13 The present invention also provides a second embodiment of a water-air separation device 10 applied to the above-mentioned cleaning equipment, and a wastewater recovery assembly 1 including the water-air separation device 10. In this embodiment, the guide channel 130 has two air inlets 131, which are respectively located on both sides of the air inlet 103 in the tangential direction of the cavity 101. The exhaust chamber 311 and the exhaust port 301 are respectively provided with two, and the separator 51 is respectively provided between each exhaust port 301 and the wastewater inlet 42. In this embodiment, the arrangement of two exhaust channels increases the exhaust volume of the water-air separation device 10, thereby improving the suction effect of the cleaning equipment. In the second embodiment, the other structures of the water-air separation device 10 and the wastewater recovery assembly 1 are substantially the same as those in the first embodiment. The beneficial effects of the water-air separation device 10 and the wastewater recovery assembly 1 in the first embodiment are as described above and will not be repeated here.

[0065] Based on the previous embodiment, preferably, a wave-blocking net 70 is also provided between the wave-blocking net 53 and the solid-liquid separation net 52. The wave-blocking net 70 further plays the role of dispersing waves and improving the anti-surge effect.

Claims

1. A wastewater recovery assembly for use in cleaning equipment, the wastewater recovery assembly comprising: A sewage tank has a cavity for holding sewage; The suction tube connects the cavity and the suction port of the cleaning component; And a water-air separation device, wherein the water-air separation device is located at the upper end of the sewage tank; The water-gas separation device includes: An external body having a cavity, the external body including side walls and a bottom wall, the side walls being located on the outer periphery of the cavity, the bottom wall being located at the lower end of the cavity, an air inlet being provided on the side walls, and a water outlet being provided on the side walls and / or the bottom wall, the air inlet connecting the cavity to a chamber for containing wastewater, and the water outlet connecting the cavity to a storage chamber; and... The inner body extends into the cavity at its lower end. There are gaps between the inner body and the side wall and the bottom wall. An air outlet is provided at the lower end of the inner body. The air outlet is connected to a negative pressure device. A centrifugal air duct is formed between the periphery of the inner body and the side wall. The centrifugal air duct connects the air inlet and the air outlet. The outer body and the inner body are respectively arranged in a cylindrical shape extending axially in the vertical direction, and the centrifugal air duct is distributed in a ring between the inner periphery of the outer body and the outer periphery of the inner body. The external body also includes a flow guide wall disposed on the outside of the side wall. The flow guide wall has a flow guide channel. The air inlet end of the flow guide channel is connected to the cavity, and the air outlet end is connected to the air inlet. The flow guide channel extends at least in a direction parallel to the tangent of the centrifugal air duct in a section adjacent to the air outlet end. The wastewater recycling assembly also includes a cover, the upper side of the cavity is open, the cover is detachably installed on the open side, and the water-air separation device is installed on the cover; the cover has an installation cavity, the installation cavity is located above the cavity, the water-air separation device is installed in the installation cavity, and an exhaust cavity is also formed in the installation cavity, connecting the cavity and the air inlet, the exhaust cavity is located radially in front of the water-air separation device, and an exhaust port is opened on the lower side of the cover, connecting the exhaust cavity and the cavity; the cross-section of the exhaust cavity is smaller than the cross-section of the cavity, the cross-section of the guide channel is smaller than the cross-section of the exhaust cavity, and the air inlet is located at the upper front end of the exhaust cavity.

2. The wastewater recovery assembly as described in claim 1, characterized in that, The guide wall includes an inner wall section, the inner side of which is adjacent to the guide channel and extends outward from the air inlet along the tangential direction of the side wall.

3. The wastewater recovery component as described in claim 2, characterized in that, The air inlet is provided, and the air inlet is located on the side of the air outlet in the tangential direction; or, The air inlet is provided in two parts, and both air inlets are located on the side of the air outlet.

4. The wastewater recovery assembly as described in any one of claims 1 or 2, characterized in that, The air outlet is not higher than the lowest point of the air inlet.

5. The wastewater recovery assembly as described in any one of claims 1 or 2, characterized in that, The water outlet is located on the side wall and adjacent to the bottom wall.

6. The wastewater recovery assembly as described in any one of claims 1 or 2, characterized in that, The inner body has a flange protruding towards the side wall, and the flange is arranged around the outer periphery of the air outlet.

7. The wastewater recovery assembly as described in claim 1, characterized in that, The suction pipe extends vertically, with its lower end forming a suction port and its upper end forming a sludge inlet located within the cavity. The sludge inlet is located below the cover, and a separator is provided between the sludge inlet and the exhaust port. The separator extends downward from the lower side of the cover, allowing airflow flowing from the sludge inlet into the cavity to bypass the separator and then flow upward toward the exhaust port.

8. The wastewater recovery assembly as described in claim 7, characterized in that, The air inlet area of ​​the exhaust port is S1, and the area of ​​the suction port is S0, where S1 is greater than or equal to 2S0; and / or, The air inlet area is S2, and the area of ​​the suction port is S0, where S2 is less than S0.

9. The wastewater recovery assembly as described in claim 7, characterized in that, It also includes a solid-liquid separation mesh, which is disposed in the cavity to divide the cavity into an upper region and a lower region arranged sequentially from top to bottom, and the sewage inlet is located in the upper region.

10. The wastewater recovery assembly as described in claim 9, characterized in that, The wastewater recovery assembly has an upright state extending vertically along the direction of gravity and a horizontal state extending forward and backward along the direction of gravity. In the horizontal state, the front side of the wastewater tank is higher than the rear side, and the suction port and the exhaust port are both located relatively close to the front side of the wastewater tank, so that in the horizontal state, the suction port and the exhaust port are both higher than the liquid level in the cavity.

11. The wastewater recovery assembly as described in claim 10, characterized in that, The bottom of the cavity is provided with an upward-protruding anti-surge plate. In the flat position, the upper side of the anti-surge plate is lower than the lowest point of the exhaust port.

12. The wastewater recovery assembly as described in claim 11, characterized in that, The mounting cavity also has an overflow cavity. An overflow port is opened on the lower side of the cover to connect the overflow cavity and the container. The overflow port is located behind the exhaust port so that when the container is in the lying position, the liquid in the container flows into the overflow cavity from the overflow port. A wave-blocking net is provided between the overflow port and the solid-liquid separation net and is located in the container. The overflow port, the wave-blocking net and the solid-liquid separation net are distributed at intervals from top to bottom.

13. The wastewater recovery assembly as described in claim 12, characterized in that, The overflow chamber is located behind the exhaust chamber. The overflow chamber and the exhaust chamber are separated by a water-blocking wall. The water-blocking wall extends downward into the cavity and, together with the partition, surrounds the outer periphery of the overflow port. The water-blocking wall, the partition, and the wave-damping net are arranged in pairs and connected.

14. The wastewater recovery assembly as described in any one of claims 7 to 13, characterized in that, The mounting cavity also includes the liquid storage cavity, and the liquid storage cavity and the exhaust cavity are spaced apart in the circumferential direction of the water-air separation device.

15. A cleaning device, characterized in that, include: A cleaning component, wherein the cleaning component is provided with a suction port; The wastewater recovery assembly as claimed in any one of claims 7 to 14, wherein the suction pipe communicates the suction port and the cavity; and, A negative pressure device is located above the wastewater recycling assembly and is connected to the air outlet.

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