Water tank and cleaning device

Abstract

The water tank and the cleaning equipment provided by the present disclosure belong to the technical field of cleaning equipment. The water tank comprises a tank body, a dirt suction channel, a negative pressure channel and a barrier. The tank body has a solid-liquid separation cavity and a sewage cavity, which are connected through a sewage discharge pipeline. The dirt suction channel is used to connect the dirt suction port of the cleaning equipment and the solid-liquid separation cavity. The negative pressure channel is used to connect the negative pressure mechanism of the cleaning equipment and the solid-liquid separation cavity, so that the negative pressure is transmitted to the dirt suction channel. The barrier is arranged in the solid-liquid separation cavity and is used to block the liquid drop flow path along the wall surface of the solid-liquid separation cavity or its containing component towards the negative pressure channel. The water tank and the cleaning equipment provided by the present disclosure introduce the barrier in the solid-liquid separation cavity, which is used to cut off the climbing path of the liquid drop formed along the inner wall of the cavity or the wall surface of its containing component to the negative pressure channel, so that the liquid drop adhered to the wall surface can be effectively prevented from entering the negative pressure channel under the traction of the negative pressure.

Description

Technical Field

[0001] This disclosure belongs to the field of cleaning equipment technology, specifically relating to a water tank and cleaning equipment. Background Technology

[0002] Cleaning equipment with a floor-washing function typically wet-washes the floor using a roller brush and spray system mounted on the cleaning head. Then, a negative pressure mechanism (such as a suction fan) inside the equipment creates suction to collect wastewater and impurities from the cleaned surface into a water tank. In this way, the cleaning equipment can simultaneously clean both solid waste and liquid pollutants.

[0003] However, during use, the water tank of this type of cleaning equipment creates a gas-liquid mixture inside because wastewater and airflow are simultaneously drawn into the tank. This is especially true when the suction is strong or the volume of wastewater is large, as the airflow can easily carry away a large number of water droplets or mist. These droplets, under the influence of the high-speed airflow, can then enter the main unit. When moisture enters the main unit, it can easily damage the internal electrical equipment. Utility Model Content

[0004] The purpose of this disclosure is to provide a water tank and cleaning equipment that can effectively separate water and air, reducing the risk of water entering the main unit of the cleaning equipment.

[0005] To achieve the above objectives, the technical solution provided in this disclosure is as follows:

[0006] In a first aspect, this disclosure provides a water tank, comprising a tank body, a suction channel, a negative pressure channel, and a barrier; the tank body has a solid-liquid separation chamber and a sewage chamber, the sewage chamber and the solid-liquid separation chamber being connected by a sewage discharge pipe, the sewage in the solid-liquid separation chamber being transported to the sewage chamber through the sewage discharge pipe; the suction channel is disposed in the tank body and is used to connect the suction port of a cleaning device with the solid-liquid separation chamber, allowing dirt sucked in from the suction port of the cleaning device to enter the solid-liquid separation chamber through the suction channel; the negative pressure channel is used to connect the negative pressure mechanism of the cleaning device with the solid-liquid separation chamber, so that the negative pressure generated by the negative pressure mechanism is transmitted to the suction channel through the solid-liquid separation chamber; the barrier is disposed in the solid-liquid separation chamber and is used to block the flow path of droplets flowing along the wall of the solid-liquid separation chamber or the wall of the receiving component in the solid-liquid separation chamber to the negative pressure channel.

[0007] In one or more embodiments, the water tank further includes a solid-liquid separator housed in the solid-liquid separation chamber, the solid-liquid separator being used to separate the sludge stream sucked in through the suction channel into solid and liquid components, the barrier including a first barrier portion protruding from the side wall of the solid-liquid separator toward the inner side of the solid-liquid separator.

[0008] In one or more embodiments, the solid-liquid separator includes a first sidewall disposed opposite to the outlet of the suction channel, and a second sidewall connected to the first sidewall and located on the side of the outlet of the suction channel, wherein both the first sidewall and the second sidewall are provided with the first blocking portion.

[0009] In one or more embodiments, the sidewall and / or bottom wall of the solid-liquid separator are provided with filter holes for filtering solid contaminants; and / or the bottom of the solid-liquid separator is provided with a support portion, which is supported on the bottom wall of the solid-liquid separation chamber to form a space for accommodating wastewater between the bottom wall of the solid-liquid separator and the bottom wall of the solid-liquid separation chamber; and / or the sidewall of the solid-liquid separator is provided with a handle.

[0010] In one or more embodiments, the water tank further includes a cover disposed on the tank body and closably connected to the tank body, the cover covering the sewage chamber and the solid-liquid separation chamber; the barrier includes a second barrier portion protruding from the bottom surface of the cover toward the solid-liquid separation chamber.

[0011] In one or more embodiments, the second barrier includes: a first baffle rib disposed opposite to the outlet of the suction channel; a second baffle rib located on the outlet side of the suction channel and between the suction channel and the negative pressure channel; an arc-shaped third baffle rib connecting the first baffle rib and the second baffle rib; and a fourth baffle rib disposed inside the third baffle rib and extending along the height direction of the third baffle rib; wherein the first baffle rib, the second baffle rib and the third baffle rib surround and block the airflow path from the suction channel along the wall of the cover to the negative pressure channel.

[0012] In one or more embodiments, the cover is provided with a negative pressure port for connecting the negative pressure channel and the negative pressure mechanism, a filter screen is provided at the inlet of the negative pressure channel communicating with the solid-liquid separation chamber, and a filter HEPA is provided at the outlet of the negative pressure channel communicating with the negative pressure port.

[0013] In one or more embodiments, the cover is provided with an exhaust port connecting the sewage chamber and the negative pressure generator. The negative pressure generator can generate negative pressure in the sewage chamber to draw the sewage in the solid-liquid separation chamber into the sewage chamber through the sewage discharge pipe.

[0014] In one or more embodiments, one end of the sewage discharge pipe is connected to a drain outlet located near the bottom wall of the solid-liquid separation chamber, and the other end is connected to an inlet pipe of the sewage chamber. The outlet of the inlet pipe is located near the top of the sewage chamber, and the height of the outlet of the inlet pipe is higher than that of the drain outlet.

[0015] In one or more embodiments, the sewage pipe is arranged along the bottom wall of the tank, and the outlet of the liquid inlet pipe is provided with a one-way valve to prevent sewage backflow.

[0016] In one or more embodiments, the cover is provided with an electrode for monitoring the liquid level in the sewage chamber, the electrode protruding into the sewage chamber, and a retaining structure is provided around the electrode.

[0017] In one or more embodiments, the housing further includes a clean water chamber, and the housing is provided with a water outlet communicating with the cleaning head of the cleaning equipment, so that clean water in the clean water chamber can be delivered to the cleaning head through the water outlet.

[0018] Secondly, this disclosure provides a cleaning device, which includes a main unit, a cleaning head, and a water tank as described above, the water tank being detachably installed on the cleaning head; the main unit includes a negative pressure mechanism and a suction pipe, the suction pipe connecting the negative pressure mechanism and the negative pressure channel of the water tank; the cleaning head includes a roller brush and a suction port disposed adjacent to the roller brush, one end of the suction channel of the water tank is connected to the suction port, and the other end of the suction channel is connected to the solid-liquid separation chamber.

[0019] The water tank and cleaning equipment provided in this disclosure, by introducing a barrier in the solid-liquid separation chamber, can cut off the migration path of droplets formed along the inner wall of the chamber or the wall of its containing component to the negative pressure channel. This can effectively prevent droplets adhering to the wall from entering the negative pressure channel under negative pressure traction, and avoid droplets being drawn into the main unit of the cleaning equipment with the airflow, thus preventing damage to electrical components. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments recorded in this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is an exploded view of a water tank in one embodiment of the present disclosure;

[0022] Figure 2 This is a cross-sectional view of a water tank from one perspective in one embodiment of this disclosure;

[0023] Figure 3 This is a cross-sectional view of the water tank from another perspective in one embodiment of this disclosure;

[0024] Figure 4 This is a schematic diagram from one perspective of an embodiment of the present disclosure after the cover of the water tank has been removed;

[0025] Figure 5 This is a schematic diagram from another perspective of one embodiment of the present disclosure after the water tank cover has been removed;

[0026] Figure 6 This is a schematic diagram of a solid-liquid separation element in one embodiment of the present disclosure;

[0027] Figure 7 This is a schematic diagram of the cover in one embodiment of the present disclosure;

[0028] Figure 8 This is a cross-sectional view of a cleaning device according to an embodiment of the present disclosure;

[0029] Figure 9 This is a disassembly diagram of the water tank and cleaning head in one embodiment of the present disclosure.

[0030] Explanation of key figure labels:

[0031] 100-Water tank, 1-Tank body, 11-Solid-liquid separation chamber, 12-Sewage chamber, 13-Sewage discharge pipe, 14-Interval space, 15-Inlet pipe, 16-One-way valve, 17-Clear water chamber, 171-Outlet, 2-Sewage suction channel, 3-Negative pressure channel, 31-Filter screen, 32-Filter HEPA filter, 4-Barrier component, 41-First barrier part, 42-Second barrier part, 421-First baffle, 422-Second baffle , 423-Third baffle, 424-Fourth baffle, 5-Solid-liquid separation component, 51-First sidewall, 52-Second sidewall, 53-Filter hole, 54-Support part, 55-Handle, 6-Cover, 61-Negative pressure port, 62-Exhaust port, 63-Electrode, 64-Enclosure structure, 200-Main unit, 201-Negative pressure mechanism, 202-Suction pipe, 300-Cleaning head, 301-Roller brush, 302-Sludge suction port. Detailed Implementation

[0032] To enable those skilled in the art to better understand the technical solutions in this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this disclosure.

[0033] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.

[0034] It should be noted that when an element is described as being "fixed to" another element, it can be directly attached to 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. In the embodiments shown in this disclosure, directional representations such as up, down, left, right, front, and back are relative and are used to explain the relative structure and movement of different components in this disclosure. These representations are appropriate when the components are in the positions shown in the figures. However, if the description of the component positions changes, then these representations are considered to change accordingly.

[0035] In existing floor cleaning equipment with a scrubbing function, a water tank structure is commonly used to collect wastewater and impurities from the cleaning surface. Its working principle involves using a negative pressure mechanism within the main unit to create suction, drawing wastewater and solid debris into the water tank. However, the gas-liquid mixture created in this way, once inside the water tank, can easily cause wastewater to migrate with the airflow. Water droplets and mist can condense or adhere to various surfaces inside the water tank and, under negative pressure, enter the main unit along the air path. This problem increases the risk of water entering the main unit of the cleaning equipment, potentially damaging the internal electrical components.

[0036] Based on an in-depth analysis of the aforementioned problems, this disclosure proposes a novel technical approach: establishing a dual mechanism for gas-liquid separation and droplet blocking within the water tank. On one hand, through cavity partitioning and pathway design, liquid and airflow have clearly defined flow paths within the tank, thereby reducing the probability of liquid being carried by the airflow. On the other hand, blocking and guiding designs are introduced at the interface between the airflow path and the liquid migration path, making it difficult for droplets condensed or adhered to the walls to enter the negative pressure pathway along the walls or component surfaces. Through the synergistic effect of these two aspects, a structure that can efficiently collect wastewater while effectively blocking droplet migration is achieved, thereby reducing the risk of water ingress into the main unit.

[0037] Reference Figures 1 to 5 As shown, in one embodiment of this disclosure, the water tank 100 can be integrated into a vacuum cleaner or other suction-type cleaning device as a floor cleaning function accessory. The water tank 100 includes a tank body 1, a suction channel 2, a negative pressure channel 3, and a barrier 4.

[0038] The housing 1 has a solid-liquid separation chamber 11 and a sewage chamber 12, which are connected by a sewage pipe 13. Sewage in the solid-liquid separation chamber 11 is transported to the sewage chamber 12 through the sewage pipe 13. A suction channel 2 is located in the housing 1 and is used to connect the suction port of the cleaning equipment with the solid-liquid separation chamber 11. Dirt sucked in from the suction port of the cleaning equipment can enter the solid-liquid separation chamber 11 through the suction channel 2. A negative pressure channel 3 is used to connect the negative pressure mechanism of the cleaning equipment with the solid-liquid separation chamber 11, so that the negative pressure generated by the negative pressure mechanism is transmitted to the suction channel 2 through the solid-liquid separation chamber 11. A barrier 4 is located in the solid-liquid separation chamber 11 and is used to block the flow path of droplets along the wall of the solid-liquid separation chamber 11 or the wall of the component contained in the solid-liquid separation chamber 11 to the negative pressure channel 3. Figure 1 The dotted line with an arrow indicates the direction of airflow in the water tank.

[0039] The tank 1 is equipped with a solid-liquid separation chamber 11 and a sewage chamber 12, which are connected by a sewage pipe 13. This allows the gas-liquid mixture entering the water tank 100 to settle and separate in the solid-liquid separation chamber 11, while the liquid portion is guided by the pipeline to the sewage chamber 12 for centralized collection, avoiding stagnation in the negative pressure gas path. The sewage pipe 13 is preferably arranged along the bottom area of ​​the tank 1, with its connection end to the solid-liquid separation chamber 11 close to the lower part of the solid-liquid separation chamber 11, so that the separated sewage can be discharged smoothly. The connection end to the sewage chamber 12 can be arranged in the relatively higher part of the sewage chamber 12, which geometrically expands the liquid static pressure path and reduces the possibility of backflow and reflux.

[0040] The suction channel 2 is located in the housing 1 and connects the suction port of the cleaning head of the cleaning equipment with the solid-liquid separation chamber 11. Its outlet faces the inside of the separation chamber, allowing wastewater and solid impurities from the cleaning surface to preferentially enter the separation chamber to complete the phase separation process. The suction channel 2 and the negative pressure channel 3 work together functionally, with the former handling the suction of waste and the latter handling the transmission of negative pressure.

[0041] The negative pressure channel 3 is used to introduce the negative pressure from the negative pressure mechanism of the cleaning equipment (such as a suction fan) into the solid-liquid separation chamber 11, so that the suction force is transmitted to the suction channel 2 through the solid-liquid separation chamber 11. The outlet of the suction channel 2 and the inlet of the negative pressure channel 3 are located near the top of the solid-liquid separation chamber 11, thereby maintaining suction capacity without direct contact with a large area of ​​liquid. To avoid secondary entrainment of liquid by the airflow, the connection position and orientation of the negative pressure channel 3 on the solid-liquid separation chamber 11 side can be non-directly opposite to the outlet of the suction channel 2 or have a certain spatial misalignment, so that the negative pressure can be effectively transmitted without forming a straight water-carrying path.

[0042] The barrier 4 installed in the solid-liquid separation chamber 11 is a component that suppresses the risk of water ingress into the main unit of the cleaning equipment. Its function is not limited to intercepting droplets from a single wall surface. It can block and guide the path of droplets to various surfaces inside the solid-liquid separation chamber 11 that may form droplets, including the inner wall of the solid-liquid separation chamber 11, the bottom wall of the cover 6, and the outer surface of the receiving components (referring to structural components that are received in the solid-liquid separation chamber 11 and whose surfaces may be attached to droplets and affect the gas-liquid separation effect, such as the solid-liquid separator 5) contained in the solid-liquid separation chamber 11. When droplets condense on the surface under the influence of airflow disturbance and heat exchange (the airflow generated during the suction process carries away heat) and crawl along the wall under the action of airflow, the barrier 4 forms a physical barrier in the wall extension area between the suction channel 2 and the negative pressure channel 3, making it difficult for droplets to crawl along the wall to the side of the negative pressure channel 3. Under the blocking effect of the barrier 4, the direction of movement is changed, and under the action of gravity, it falls back to the bottom of the solid-liquid separation chamber 11, and finally transfers to the sewage chamber 12 through the sewage pipe 13, thereby reducing the risk of droplets entering the main unit of the cleaning equipment through the negative pressure channel 3.

[0043] In one exemplary embodiment, reference is made to Figures 1 to 3 As shown, the solid-liquid separation chamber 11 contains a solid-liquid separator 5, which is used to separate the solid and liquid flow of sewage sucked in through the sewage suction channel 2. The barrier 4 includes a first barrier part 41, which protrudes from the side wall of the solid-liquid separator 5 toward the inside of the solid-liquid separator 5.

[0044] The solid-liquid separator 5 is spatially arranged corresponding to the outlet of the suction channel 2, so that the gas-liquid mixture (sewage flow) entering through the suction channel 2 first enters the volume defined by the solid-liquid separator 5 to complete the primary separation. Solid waste is trapped in the solid-liquid separator 5, and the sewage gathers to the bottom of the solid-liquid separation chamber 11 under the action of gravity and the inner wall, while the gas continues to be drawn by negative pressure to the negative pressure channel 3.

[0045] When wastewater enters the solid-liquid separator 5, it may condense into droplets on the sidewall due to airflow impact or surface tension, and flow along the wall of the solid-liquid separator 5, tending towards the inlet of the negative pressure channel 3. To inhibit the migration of droplets or along the wall towards the negative pressure channel 3 under negative pressure, a barrier 4 is arranged on the path of the droplets crawling along the wall towards the negative pressure channel 3, wherein the first barrier part 41 protrudes inward from the sidewall of the solid-liquid separator 5, forming a flange structure on the inner wall of the solid-liquid separator 5. On the one hand, the flange structure changes the local geometric continuity and wetting boundary conditions of the sidewall. That is, the originally smooth wall surface is cut off by the first barrier part 41, the contact angle of the droplet at the flange is changed, and the liquid film formed by the droplet adhering to the wall surface can no longer cross the wall surface by relying on the continuous wetting effect. This interrupts the continuous crawling and confluence of the droplet on the inner wall of the solid-liquid separator 5, causing the droplet to gather and fall back at the flange, thereby stopping its further crawling along the wall surface. On the other hand, it can weaken the shearing and re-entraining effect of the airflow on the wall on the tiny droplets, reducing the probability of the droplet entering the negative pressure channel 3 side along the wall surface of the solid-liquid separator 5.

[0046] Specifically, refer to Figure 1 and Figure 6 As shown, the solid-liquid separator 5 includes a first sidewall 51 disposed opposite to the outlet of the suction channel 2, and a second sidewall 52 connected to the first sidewall 51 and located on the side of the outlet of the suction channel 2. Both the first sidewall 51 and the second sidewall 52 are provided with a first blocking part 41.

[0047] The solid-liquid separator 5 is spatially arranged to form a flow-facing region (first sidewall 51) facing the outlet of the suction channel 2 and a flow-guiding region (second sidewall 52) extending downstream to the side of the outlet of the suction channel 2. The first sidewall 51, directly opposite the outlet of the suction channel 2, preferentially receives the high-momentum gas-liquid mixture ejected from the outlet, allowing the initial impact kinetic energy to be rapidly thinned and diffused on the wall surface. Solid particles are more easily trapped after localized stalling, while liquid droplets are transformed into fine streams flowing along the wall or falling back due to wall wetting. The second sidewall 52, connected to it, extends downstream to the side of the outlet of the suction channel 2, effectively creating a downstream buffer channel within the separator. This allows the liquid entrained in the decelerated gas-liquid mixture to fall back to the lower region of the solid-liquid separation chamber 11 under gravity as it continues to move forward.

[0048] To suppress the dripping or liquid film from creeping into the negative pressure channel 3, a first barrier 41 is provided on both the first sidewall 51 and the second sidewall 52 to change the continuity of the wall surface, interrupt the continuous creeping of the liquid film, and force the liquid to gather and drip at the protrusion formed by the first barrier 41.

[0049] Furthermore, referring to Figure 2 and Figure 6As shown, the solid-liquid separator 5 has filter holes 53 on its side wall and bottom wall for filtering solid dirt; the bottom of the solid-liquid separator 5 has a support part 54, which is supported on the bottom wall of the solid-liquid separation chamber 11 to form a space 14 for accommodating sewage between the bottom wall of the solid-liquid separator 5 and the bottom wall of the solid-liquid separation chamber 11; the side wall of the solid-liquid separator 5 has a handle 55.

[0050] The filter holes 53 on the side wall of the solid-liquid separator 5 receive the incoming flow impact from the suction channel 2, trapping larger particles and fibrous dirt, while allowing liquid to pass through quickly and fall down the wall; the filter holes 53 on the bottom wall provide a vertical discharge channel after the liquid has completed the initial settling, shortening the residence time of the liquid inside the separator and reducing the chance of it being entrained by the airflow again.

[0051] The support 54 at the bottom of the solid-liquid separator 5 abuts against the bottom wall of the solid-liquid separation chamber 11, forming a space 14. This space 14 serves as both a wastewater collection area and a liquid supply tank for the sewage pipe 13. The support 54 is arranged to avoid the bottom filter hole 53 and the drainage path. It can be annular or multi-point supported to distribute stress, reduce dead angles of contact with wastewater, and reduce scale buildup through a smooth transition. During the separation process, after the liquid flows out through the filter hole 53, the buffer area provided by the space 14 prevents the solid waste collected in the solid-liquid separator 5 from being soaked in the wastewater.

[0052] A handle 55 is provided on the side wall of the solid-liquid separator 5 for picking up and putting down the separator. Its position avoids the connection area between the main suction area and the negative pressure channel 3 to avoid disturbing the main air passage. The handle 55 can be designed in the form of a protrusion or a groove to facilitate the user's grip, so that the user can easily remove the solid-liquid separator 5 from the solid-liquid separation chamber 11 to clean the solid dirt accumulated inside.

[0053] In one exemplary embodiment, reference is made to Figure 1 , Figure 2 and Figure 7 As shown, the water tank 100 also includes a cover 6 that is disposed on the tank body 1 and is closably connected to the tank body 1. The cover 6 covers the sewage chamber 12 and the solid-liquid separation chamber 11. The barrier 4 includes a second barrier portion 42 that protrudes from the bottom surface of the cover 6 toward the solid-liquid separation chamber 11.

[0054] The cover 6 serves as the top sealing component of the water tank 100. When closed, it simultaneously covers the sewage chamber 12 and the solid-liquid separation chamber 11, forming a sealed space with the tank body 1 to ensure stable negative pressure transmission. The cover 6 preferably achieves quick opening and reliable closing through a hinge and locking mechanism. Its sealing fit with the tank body 1 can be achieved by an elastic sealing ring surrounding the periphery of the tank body 1 or by soft rubber or other sealing materials adhering to the periphery of the tank body 1, preventing gas and liquid leakage, while allowing the user to open it to clean accumulated dirt in the chamber or inspect internal components.

[0055] To reduce the tendency of droplets or liquid films from the bottom surface of the cover 6 to migrate towards the negative pressure side, a second barrier 42 is provided on the bottom surface of the cover 6. The second barrier 42 extends from the bottom surface of the cover 6 toward the solid-liquid separation chamber 11 and is located between the outlet of the suction channel 2 and the area connecting the negative pressure channel 3. It can be presented in the form of a baffle, rib, or similar protrusion to interrupt and guide the gas-liquid mixture flow close to the bottom surface of the cover 6.

[0056] The second barrier 42 alters the streamlines of the near-wall region of the bottom wall (bottom surface) of the cover 6, causing the airflow to deflect and diffuse, reducing the airflow's ability to shear and carry tiny droplets along the wall. Furthermore, its protruding structure, under the combined action of gravity and surface tension, creates an aggregation effect on the liquid film and condensate formed along the bottom wall of the cover 6, allowing droplets to fall back along the edge of the second barrier 42 to the lower region of the solid-liquid separation chamber 11, rather than crossing over to the negative pressure channel 3. After the cover 6 and the housing 1 are closed, the second barrier 42 and the first barrier 41 on the side wall of the solid-liquid separator 5 form a spatial blocking zone. The second barrier 42 primarily prevents droplets from crawling along the bottom wall of the cover 6, while the first barrier 41 primarily prevents droplets from crawling along the inner wall of the solid-liquid separator 5.

[0057] Specifically, refer to Figure 2 and Figure 7 As shown, the second barrier 42 includes: a first baffle 421 facing the outlet of the suction channel 2, a second baffle 422 located on the side of the outlet of the suction channel 2 and between the suction channel 2 and the negative pressure channel 3, an arc-shaped third baffle 423 connecting the first baffle 421 and the second baffle 422, and a fourth baffle 424 disposed inside the third baffle 423 and extending along the height direction of the third baffle 423; wherein the first baffle 421, the second baffle 422 and the third baffle 423 enclose and block the airflow path from the suction channel 2 along the wall of the cover 6 to the negative pressure channel 3.

[0058] The second barrier section 42 has a multi-ribbed composite structure in its overall design. It constructs an enclosing barrier between the outlet of the suction channel 2 and the inlet of the negative pressure channel 3, weakening the droplet crossing path through physical blocking and airflow disturbance. Specifically, the first baffle 421 is positioned directly opposite the outlet of the suction channel 2, becoming the first obstacle encountered by the gas-liquid mixture after leaving the outlet. It can directly weaken the linear impact kinetic energy of the droplets carried in the high-speed gas-liquid mixture, while causing the gas-liquid mixture to split and decelerate, thereby reducing the possibility of forward-sprayed droplets entering the negative pressure channel 3. The second baffle 422, connected to it, extends downstream to the side of the outlet of the suction channel 2, forming a downstream longitudinal barrier line. Its position is between the air passage of the suction channel 2 and the negative pressure channel 3, which can effectively cut off the near-wall airflow path from the outlet of the suction channel 2 to the inlet of the negative pressure channel 3, making it difficult for the liquid film or droplets formed along the bottom wall of the cover 6 to migrate to the negative pressure channel 3 through this path. The first baffle 421 and the second baffle 422 are smoothly transitioned by the arc-shaped third baffle 423, and the three together form a partially enclosed space. The introduction of the arc-shaped structure not only provides structural rigidity reinforcement, but also guides the gas-liquid mixture to flow around the flow and weakens the re-entrainment effect of the local vortex region, while providing curved edges for liquid droplets to fall back or gather.

[0059] To further enhance the barrier effect, a fourth baffle 424 extending along its height is provided inside the third baffle 423, forming a vertically extending barrier band. This makes it easier for liquid droplets that accumulate along the arc-shaped baffle to drip down to the bottom of the separation chamber under the action of gravity. Through the above-mentioned coordinated arrangement of multiple baffles, the second barrier part 42 forms a surrounding barrier area around the outlet of the suction channel 2. When the gas-liquid mixture flows through this area, it undergoes directional deflection and kinetic energy loss. The condensed liquid droplets on the wall are interrupted at the protruding baffles and fall back, preventing them from crawling along the bottom wall of the cover 6 to the negative pressure channel 3.

[0060] In one exemplary embodiment, reference is made to Figure 1 , Figure 4 , Figure 5 and Figure 7 As shown, the cover 6 is provided with a negative pressure port 61 for connecting the negative pressure channel 3 and the negative pressure mechanism. A filter screen 31 is provided at the inlet of the negative pressure channel 3 and the solid-liquid separation chamber 11, and a filter HEPA filter 32 is provided at the outlet of the negative pressure channel 3 and the negative pressure port 61.

[0061] The cover 6 serves as the top sealing component of the water tank 100, and the negative pressure port 61 on it is the interface connecting the negative pressure channel 3 to the negative pressure mechanism of the cleaning equipment (such as a suction fan). Through the negative pressure port 61, the suction force generated by the negative pressure mechanism can be transmitted to the inside of the water tank 100, so that the sewage suction channel 2 and the solid-liquid separation chamber 11 are in a negative pressure environment, thereby driving sewage and impurities to be sucked into the water tank 100 from the cleaning surface.

[0062] To prevent impurities in the airflow from entering the main unit of the cleaning equipment, the negative pressure channel 3 is designed with a dual filtration structure: Firstly, a filter screen 31 is installed at its inlet, which connects to the solid-liquid separation chamber 11, to intercept solid particles, such as hair, dust, or debris, that may be carried by the airflow. This filter screen 31 can be made of metal wire mesh or high-strength plastic mesh, has good gas permeability, and is installed close to the inlet of the negative pressure channel 3. Secondly, a HEPA filter 32 is further installed at the outlet of the negative pressure channel 3 leading to the negative pressure port 61 to intercept fine water vapor, droplets, or particles that may still remain in the airflow.

[0063] Furthermore, referring to Figure 1 , Figure 3 and Figure 7 As shown, the cover 6 is also provided with an exhaust port 62 that connects the sewage chamber 12 and the negative pressure generator. The negative pressure generator can generate negative pressure in the sewage chamber 12 to draw the sewage in the solid-liquid separation chamber 11 into the sewage chamber 12 through the sewage pipe 13.

[0064] After the cover 6 is closed and sealed to the housing 1, the exhaust port 62 becomes the gas passage for the sewage chamber 12 to the outside. During operation, a negative pressure generator (such as a vacuum pump) creates negative pressure in the sewage chamber 12 through the exhaust port 62, thus lowering the chamber pressure of the sewage chamber 12 than that of the solid-liquid separation chamber 11, creating a pressure difference. Combined with the conduction path of the sewage discharge pipe 13, the pressure difference causes the sewage that has settled and collected in the solid-liquid separation chamber 11 to be drawn along the discharge pipe 13 and transferred to the sewage chamber 12 for centralized collection.

[0065] In one exemplary embodiment, reference is made to Figure 3 and Figure 5 As shown, one end of the sewage pipe 13 is connected to the drain port provided on the bottom wall of the adjacent solid-liquid separation chamber 11, and the other end is connected to the outlet of the inlet pipe 15 provided on the top of the adjacent sewage chamber 12. The outlet height of the inlet pipe 15 is higher than that of the drain port.

[0066] The drain pipe 13 serves as a channel connecting the solid-liquid separation chamber 11 and the sewage chamber 12 inside the water tank 100. One end of the drain pipe is connected to the drain port near the bottom wall of the solid-liquid separation chamber 11, and the other end is connected to the top area of ​​the sewage chamber 12 through the outlet of the inlet pipe 15. The drain port is adjacent to the bottom wall of the solid-liquid separation chamber 11, which can directly collect the sewage that has been filtered by the solid-liquid separator 5 and settled at the bottom of the chamber, ensuring that the liquid is efficiently discharged at the lowest point. The outlet of the inlet pipe 15 is located near the top of the sewage chamber 12, and its height is higher than that of the drain port, forming a vertical height difference. This height difference design can prevent liquid backflow. By placing the outlet of the inlet pipe 15 at a higher position, the sewage settles downward under gravity after entering the sewage chamber 12, making it difficult for it to flow back into the solid-liquid separation chamber 11.

[0067] Specifically, refer to Figure 5 As shown, the sewage pipe 13 is arranged along the bottom wall of the box 1, and the outlet of the liquid inlet pipe 15 is provided with a one-way valve 16 to prevent sewage backflow.

[0068] The drain pipe 13 can extend along the bottom wall or the side wall near the bottom of the tank 1 in a straight line or with a slight bend. One end is connected to the drain port near the bottom wall of the solid-liquid separation chamber 11, and the other end leads to the top area of ​​the sewage chamber 12 through the outlet of the inlet pipe 15. The arrangement of the drain pipe 13 along the bottom wall reduces the height of the drain pipe 13, making it easier for the liquid to flow under pressure difference. It also makes full use of the low space inside the tank 1 and reduces the occupation of other functional areas.

[0069] The inlet pipe 15 serves as an extension of the drain pipe 13, with its outlet located at the top of the sewage chamber 12, forming a high-level discharge point. A one-way valve 16, in the form of a mechanical valve or diaphragm, is installed at the outlet of the inlet pipe 15. This one-way valve 16 opens during normal drainage, allowing sewage in the separation chamber to enter the sewage chamber 12; while when drainage ends, the one-way valve 16 closes, preventing the liquid in the sewage chamber 12 from flowing back into the drain pipe 13 and the solid-liquid separation chamber 11.

[0070] In one exemplary embodiment, reference is made to Figure 1 and Figure 7 As shown, the cover 6 is provided with an electrode 63 for monitoring the liquid level in the sewage chamber 12. The electrode 63 protrudes into the sewage chamber 12, and a retaining structure 64 is provided around the electrode 63.

[0071] Electrode 63 protrudes downwards from the cover 6 into the sewage chamber 12, allowing its end to contact the liquid surface within the chamber. During normal operation, when the sewage level has not yet risen to the position of electrode 63, electrode 63 remains disconnected. When the liquid level rises and contacts electrode 63, the liquid's conductivity causes the electrodes to conduct, generating a corresponding electrical signal. This signal is transmitted to the main control system via the control circuit, alerting the user that the sewage in the chamber 12 is nearing full capacity and requires timely discharge or cleaning. This liquid level monitoring method relies on the conductivity of the liquid, enabling timely reflection of sewage levels and avoiding the risk of overflow due to imperceptibility to visual inspection.

[0072] To improve the accuracy of electrode 63 detection, a surrounding structure 64 is provided around its periphery. The surrounding structure 64 is cylindrical or sheath-shaped, maintaining a spaced fit with electrode 63. This ensures that the liquid does not obstruct contact with the end of electrode 63 when the liquid level rises, while effectively reducing false triggering in dynamic environments. During the operation of the cleaning equipment, the liquid in the sewage chamber 12 is often accompanied by suction disturbances, bubble surging, or water droplet splashing. Without protective measures, droplets can easily adhere briefly to the surface of electrode 63 and the wall of cover 6, forming liquid adhesion and causing momentary conductivity, leading to false judgment that the sewage chamber is full. The presence of the surrounding structure 64 is equivalent to setting up a barrier around electrode 63, reducing the probability of droplet adhesion and thus lowering the frequency of false triggering.

[0073] In one exemplary embodiment, reference is made to Figure 1 and Figure 5 As shown, the housing 1 also includes a clean water chamber 17. The housing 1 is provided with a water outlet 171 that communicates with the cleaning head of the cleaning equipment, so that the clean water in the clean water chamber 17 can be delivered to the cleaning head through the water outlet 171.

[0074] The housing 1 contains an independent clean water chamber 17, which is physically separated and sealed from the solid-liquid separation chamber 11 and the wastewater chamber 12 by an internal partition, making the water supply circuit and the recycling circuit spatially independent and avoiding cross-contamination. The clean water chamber 17 is connected to the cleaning head of the cleaning equipment through a water outlet 171 located on the housing 1. The water outlet 171 and the cleaning head can be connected by a water pressure-resistant, detergent-resistant, and bend-resistant hose. To ensure the spraying or wetting effect, an anti-clogging filter or microfiltration component can be installed inside the water outlet 171 to intercept particles and prevent nozzle clogging. Combined with the spray / leakage components of the cleaning head, the clean water chamber 17 provides a clean water source to wet the roller brush, wiping cloth area, or surface to be cleaned.

[0075] Reference Figure 1 , Figure 8 and Figure 9 As shown, this disclosure also provides a cleaning device, which includes a main unit 200, a cleaning head 300, and the aforementioned water tank 100. The water tank 100 is detachably installed on the cleaning head 300. The main unit 200 includes a negative pressure mechanism 201 and a suction pipe 202, and the suction pipe 202 connects the negative pressure mechanism 201 and the negative pressure channel of the water tank 100. The cleaning head 300 includes a roller brush 301 and a suction port 302 disposed adjacent to the roller brush 301. One end of the suction channel 2 of the water tank 100 is connected to the suction port 302, and the other end of the suction channel 2 is connected to the solid-liquid separation chamber.

[0076] The main unit 200, serving as the power center of the cleaning equipment, integrates a negative pressure mechanism 201 (such as a suction fan or vacuum pump) and a suction pipe 202. The negative pressure mechanism 201 is responsible for generating negative pressure, providing power for the entire system's suction function. The suction pipe 202 serves as the channel for transmitting negative pressure, with one end directly connected to the negative pressure mechanism 201 and the other end connected to the negative pressure channel of the water tank 100 through a negative pressure port.

[0077] The cleaning head 300 is a component of the cleaning equipment used to clean the surface, comprising a roller brush 301 and a suction port 302 adjacent to the roller brush 301. The roller brush 301 is responsible for scrubbing the surface to loosen dirt and particles. The suction port 302 is located adjacent to the roller brush 301, preferably behind it, forming a low-position suction port. The dirt and wastewater loosened by the roller brush 301 can be captured by the suction port 302 under negative pressure. The suction port 302 is connected to one end of the suction channel 2 of the water tank 100 via a pipe or interface, while the other end of the suction channel 2 leads to the solid-liquid separation chamber of the water tank 100, so that the dirt sucked in from the suction port 302 can enter the solid-liquid separation chamber.

[0078] The main function of the water tank 100 is to achieve solid-liquid separation of waste and storage of sewage. Its internal solid-liquid separation chamber 11 receives waste entering from the suction channel 2 and prevents droplets or solid waste from entering the negative pressure channel 3 through the barrier 4 and the filter structure, thus protecting the main unit 200 from liquid damage.

[0079] In summary, the water tank and cleaning equipment provided in this disclosure, by introducing a barrier in the solid-liquid separation chamber, can cut off the migration path of droplets formed along the inner wall of the chamber or the wall of its containing component to the negative pressure channel. This can effectively prevent droplets adhering to the wall from entering the negative pressure channel under negative pressure traction, and avoid droplets being drawn into the main unit of the cleaning equipment with the airflow, thus preventing damage to electrical components.

[0080] It will be apparent to those skilled in the art that this disclosure is not limited to the details of the exemplary embodiments described above, and that this disclosure can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of this disclosure is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this disclosure. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0081] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A water tank, characterized in that, include: The housing has a solid-liquid separation chamber and a sewage chamber, which are connected by a sewage pipe. The sewage in the solid-liquid separation chamber is transported to the sewage chamber through the sewage pipe. A suction channel is provided in the housing and is used to connect the suction port of the cleaning equipment with the solid-liquid separation chamber. Dirt sucked in from the suction port of the cleaning equipment can enter the solid-liquid separation chamber through the suction channel. A negative pressure channel is used to connect the negative pressure mechanism of the cleaning equipment with the solid-liquid separation chamber, so that the negative pressure generated by the negative pressure mechanism is transmitted to the suction channel through the solid-liquid separation chamber. A barrier element is disposed within the solid-liquid separation chamber to block the flow path of droplets along the wall of the solid-liquid separation chamber or the wall of the receiving component in the solid-liquid separation chamber toward the negative pressure channel.

2. The water tank according to claim 1, characterized in that, It also includes a solid-liquid separator housed in the solid-liquid separation chamber, the solid-liquid separator being used to separate the sludge stream sucked in through the suction channel into solid and liquid components, the barrier including a first barrier portion that protrudes from the side wall of the solid-liquid separator toward the inner side of the solid-liquid separator.

3. The water tank according to claim 2, characterized in that, The solid-liquid separator includes a first sidewall disposed opposite to the outlet of the suction channel, and a second sidewall connected to the first sidewall and located on the side of the outlet of the suction channel. Both the first sidewall and the second sidewall are provided with the first barrier portion.

4. The water tank according to claim 2, characterized in that, The solid-liquid separator has filter holes on its sidewalls and / or bottom wall for filtering solid contaminants; and / or The bottom of the solid-liquid separator is provided with a support portion, which is supported on the bottom wall of the solid-liquid separation chamber to form a space for accommodating sewage between the bottom wall of the solid-liquid separator and the bottom wall of the solid-liquid separation chamber. and / or The solid-liquid separator is provided with a handle on its side wall.

5. The water tank according to claim 1, characterized in that, It also includes a cover that is disposed on the housing and is closably connected to the housing, the cover covering the sewage chamber and the solid-liquid separation chamber; the barrier includes a second barrier portion that protrudes from the bottom surface of the cover toward the solid-liquid separation chamber.

6. The water tank according to claim 5, characterized in that, The second barrier includes: a first baffle rib facing the outlet of the suction channel, a second baffle rib located on the side of the outlet of the suction channel and between the suction channel and the negative pressure channel, an arc-shaped third baffle rib connecting the first baffle rib and the second baffle rib, and a fourth baffle rib disposed inside the third baffle rib and extending along the height direction of the third baffle rib; wherein the first baffle rib, the second baffle rib and the third baffle rib surround and block the airflow path from the suction channel along the wall of the cover to the negative pressure channel.

7. The water tank according to claim 5, characterized in that, The cover is provided with a negative pressure port for connecting the negative pressure channel and the negative pressure mechanism. A filter screen is provided at the inlet of the negative pressure channel that connects to the solid-liquid separation chamber, and a filter HEPA is provided at the outlet of the negative pressure channel that connects to the negative pressure port.

8. The water tank according to claim 5, characterized in that, The cover is provided with an exhaust port that connects the sewage chamber and the negative pressure generator. The negative pressure generator can generate negative pressure in the sewage chamber to draw the sewage in the solid-liquid separation chamber into the sewage chamber through the sewage discharge pipe.

9. The water tank according to claim 8, characterized in that, One end of the sewage discharge pipe is connected to a drain outlet located near the bottom wall of the solid-liquid separation chamber, and the other end is connected to an inlet pipe of the sewage chamber. The outlet of the inlet pipe is located near the top of the sewage chamber, and the outlet height of the inlet pipe is higher than that of the drain outlet.

10. The water tank according to claim 9, characterized in that, The sewage discharge pipe is arranged along the bottom wall of the box, and the outlet of the liquid inlet pipe is equipped with a one-way valve to prevent sewage backflow.

11. The water tank according to claim 5, characterized in that, The cover is provided with an electrode for monitoring the liquid level in the sewage chamber. The electrode protrudes into the sewage chamber and is surrounded by a baffle structure.

12. The water tank according to claim 1, characterized in that, The housing also includes a clean water chamber, and the housing is provided with a water outlet that communicates with the cleaning head of the cleaning equipment, so that the clean water in the clean water chamber can be delivered to the cleaning head through the water outlet.

13. A cleaning device, characterized in that, The device includes a main unit, a cleaning head, and a water tank as described in any one of claims 1 to 12, wherein the water tank is detachably mounted on the cleaning head; the main unit includes a negative pressure mechanism and a suction pipe, wherein the suction pipe connects the negative pressure mechanism and the negative pressure channel of the water tank; the cleaning head includes a roller brush and a suction port disposed adjacent to the roller brush, one end of the suction channel of the water tank is connected to the suction port, and the other end of the suction channel is connected to the solid-liquid separation chamber.

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