Liquid passing structure and cleaning equipment

Abstract

The embodiment of the utility model provides a liquid passing structure and cleaning equipment, and the liquid passing structure comprises a liquid passing cavity which is provided with a first inlet and outlet and a second inlet and outlet; the one-way valve is connected with the first inlet and outlet of the liquid passing cavity and is configured to be closed in the direction from the first inlet and outlet of the liquid passing cavity to the second inlet and outlet of the liquid passing cavity; and the filtering piece is arranged at the side part of the liquid passing cavity and is communicated with the liquid passing cavity, so that liquid in dirty liquid flows into the liquid passing cavity from the filtering piece at the side part of the liquid passing cavity and then is discharged from a second inlet / outlet of the liquid passing cavity under the condition that the one-way valve is closed. According to the liquid passing structure, dirt in the dirty liquid is prevented from being discharged along with liquid in the dirty liquid, and the discharging efficiency of the liquid in the dirty liquid is improved.

Description

Technical Field

[0001] This application belongs to the field of sewage cleaning technology, and more specifically, relates to a liquid-passing structure and cleaning equipment. Background Technology

[0002] Traditional pool vacuum cleaners, after cleaning the pool's filth, need to be lifted out of the pool. At this point, the vacuum cleaner's cavity is filled with waste liquid. To prevent the filth from being flushed out with the liquid, traditional vacuum cleaners use a semi-open, sealed design for the cavity's flow channel. This design prevents the liquid from draining quickly, requiring a person to hold the cleaning equipment filled with waste liquid for an extended period while waiting for it to drain. Utility Model Content

[0003] The purpose of this application is to provide a liquid-passing structure and cleaning device to prevent dirt in the sewage from being discharged with the liquid in the sewage and to improve the discharge efficiency of the liquid in the sewage.

[0004] In a first aspect, embodiments of this application provide a liquid-permeable structure, including:

[0005] The liquid passage chamber has a first inlet and a second inlet / outlet;

[0006] A one-way valve, connected to the first inlet / outlet of the liquid passage chamber, is configured to close in the direction from the first inlet / outlet of the liquid passage chamber to the second inlet / outlet of the liquid passage chamber;

[0007] A filter element is provided on the side of the liquid passage chamber and communicates with the liquid passage chamber so that when the one-way valve is closed, the liquid in the sewage flows into the liquid passage chamber through the filter element on the side of the liquid passage chamber and then discharges from the second inlet and outlet of the liquid passage chamber.

[0008] Furthermore, the flow cross-section of the filter element is larger than the flow cross-section of the second inlet and outlet of the liquid passage chamber.

[0009] Furthermore, the one-way valve is configured such that the second inlet / outlet of the liquid passage chamber opens toward the first inlet / outlet of the liquid passage chamber, so that when the one-way valve is open, a portion of the liquid in the sewage flows sequentially through the second inlet / outlet of the liquid passage chamber, the first inlet / outlet of the liquid passage chamber, and the one-way valve before being discharged from the first inlet / outlet of the liquid passage chamber; another portion of the liquid in the sewage flows sequentially through the second inlet / outlet of the liquid passage chamber and the filter element before being discharged from the side of the liquid passage chamber.

[0010] Furthermore, the one-way valve includes a connecting part and a baffle plate. The connecting part is fixedly connected to the side of the first inlet / outlet of the liquid passage chamber. The connecting part is rotatably connected to the baffle plate so that when liquid is discharged from the liquid passage chamber, the baffle plate rotates to the first inlet / outlet of the liquid passage chamber and closes the first inlet / outlet of the liquid passage chamber. When liquid is introduced into the liquid passage chamber, the baffle plate moves away from the first inlet / outlet of the liquid passage chamber and opens the first inlet / outlet of the liquid passage chamber.

[0011] Furthermore, the one-way valve includes a fixing member, a folding member, and a sealing member; the fixing member is rotatably connected to the sealing member through the folding member, so that when the sealing member is rotated to the first inlet / outlet of the liquid passage chamber, the sealing member seals the first inlet / outlet of the liquid passage chamber;

[0012] The first inlet / outlet side of the liquid passage cavity is provided with a connecting hole; the fixing member is provided with a connecting member; the connecting member includes a rod, one end of which has a protrusion, so that when the protrusion squeezes the connecting hole from one side to the other side of the connecting hole, the fixing member and the protrusion will lock the wall of the first inlet / outlet side of the liquid passage cavity on the outside of the rod.

[0013] The fastener, the connector, the folding member, and the sealing member are integrally formed.

[0014] Furthermore, the filter element includes:

[0015] A framework with channels;

[0016] And a filter screen for covering the channels of the frame;

[0017] The frame is connected to the side of the fluid passage chamber.

[0018] Furthermore, the side of the fluid passage cavity is provided with an installation port; the installation port is provided with a slot, and the outer side of the frame is provided with a locking block. The frame and the installation port are connected by the slot and the locking block; or the installation port is provided with a sliding groove, the sliding groove is provided with a locking block, and the outer side of the frame is provided with a slider. When the outer side of the frame slides in the sliding groove, the slider squeezes the locking block, so that the slider is deformed and slides into the sliding groove to restore its shape and is locked into the sliding groove by the locking block.

[0019] Furthermore, the mounting opening is a rectangular structure; two sliding grooves are provided on a pair of opposite sides of the mounting opening; the frame is a rectangular structure, and two sliders are respectively provided on a pair of opposite sides of the frame; when the sliders slide in the corresponding two sliding grooves on a pair of opposite sides of the frame, the sliders press the locking blocks so that the sliders are deformed and slide into the sliding grooves to restore their shape and be locked into the sliding grooves by the locking blocks.

[0020] Furthermore, the frame includes: a first fastening frame and a second fastening frame; the through holes of the first fastening frame and the second fastening frame communicate to form the channel, and the first fastening frame and the second fastening frame fasten each other to detachably fix the filter screen to the channel between the first fastening frame and the second fastening frame.

[0021] Secondly, embodiments of this application provide a cleaning device, comprising:

[0022] The aforementioned liquid-passing structure;

[0023] The suction nozzle is connected to the liquid-passing structure via a connecting channel;

[0024] And a pumping device, used to generate suction so that the sewage in the suction nozzle is drawn into the liquid passage chamber of the liquid passage structure through the suction nozzle and opens the one-way valve under the action of suction.

[0025] The liquid-flowing structure and cleaning device of this application embodiment, during liquid discharge, the waste liquid flows from the closed direction of the one-way valve to the one-way valve, and after being blocked by the one-way valve, flows to the filter element on the side of the liquid-flowing chamber. The flow cross-section of the filter element is larger than the flow cross-section of the second inlet and outlet of the liquid-flowing chamber. The liquid in the waste liquid flows into the liquid-flowing chamber through the filter element and then exits from the second inlet and outlet of the liquid-flowing chamber, while the dirt in the waste liquid cannot enter the liquid-flowing chamber through the filter element. Therefore, the liquid-flowing structure avoids the dirt in the waste liquid from being discharged with the liquid in the waste liquid and improves the discharge efficiency of the liquid in the waste liquid. Attached Figure Description

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

[0027] Figure 1 This is a three-dimensional structural diagram of a fluid-passing structure connected by connecting channels, taken from one perspective.

[0028] Figure 2 This is a three-dimensional structural diagram of a fluid-passing structure connected by connecting channels, from another perspective.

[0029] Figure 3 for Figure 2 A 3D structural diagram with the check valve and filter removed.

[0030] Figure 4 for Figure 3 A magnified view of part X.

[0031] Figure 5 for Figure 1 A bottom view.

[0032] Figure 6 for Figure 5 A schematic diagram of the structure of section AA in the middle.

[0033] Figure 7 A schematic diagram of the structure after the filter screen is installed on the first fastening frame.

[0034] Figure 8 This is a three-dimensional structural diagram of the first fastening frame.

[0035] Figure 9 This is a structural schematic diagram of the second fastening frame from one perspective.

[0036] Figure 10 This is the left view of the second fastening frame.

[0037] Figure 11 This is a structural schematic diagram of the second fastening frame from another perspective.

[0038] Figure 12 This is a schematic diagram of a one-way valve according to one embodiment.

[0039] Figure 13 This is a schematic diagram of the cleaning equipment.

[0040] Figure 14 This is a three-dimensional structural diagram of a one-way valve according to another embodiment.

[0041] Figure 15 This is a schematic diagram of a one-way valve installed in a fluid passage chamber, according to another embodiment.

[0042] Figure 16 This is a schematic diagram illustrating the installation principle of a one-way valve according to another embodiment.

[0043] The following are the labeling elements in the figure:

[0044] 1-Liquid passage structure, 2-Liquid pump device, 3-Handle, 4-Suction nozzle, 5-Connecting channel, 6-Blocking position, 11-Liquid passage chamber, 111-Locking block, 112-Slide groove, 12-One-way valve, 13-Filter element, 121-Baffle, 122-Blocking position, 123-Hinge, 124-Fastener, 131-Push-pull element, 132-First fastening frame, 133-Second fastening frame, 1321-First slider, 1 322-Second slider, 1323-Filter screen, 1324-Gap, 1325-First groove, 1326-Second groove, 1327-Third groove, 1331-First step block, 1332-Second step block, 1333-Third step block, 1334-Snap-fit ​​block, 140-Sealing element, 141-Folding element, 142-Fixing element, 143-Connecting element, 144-Mushroom head, 145-Narrowing opening, 146-Side wall. Detailed Implementation

[0045] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0046] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0047] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "level", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0048] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0049] Pool cleaning equipment is an important tool for maintaining the hygiene and cleanliness of pools. Depending on their function and usage, it mainly includes traditional cleaning tools and shore-based pool vacuum cleaners.

[0050] A shore-based manual pool vacuum cleaner is a type of vacuuming device that requires the user to operate it at the poolside. It cleans the pool by manually controlling the movement of the suction head.

[0051] A fully automatic pool vacuum cleaner is an intelligent cleaning device with powerful suction and filtration capabilities. It can autonomously clean the pool bottom, walls, and waterline, while filtering out dirt, sand, algae, and other impurities from the pool water. The fully automatic pool vacuum cleaner is also equipped with filters and water pumps to remove impurities from the pool water.

[0052] However, after traditional pool vacuum cleaners have finished cleaning the dirt and grime from the pool, they need to be lifted out of the pool. At this point, the vacuum cleaner's cavity is filled with waste liquid. To prevent dirt from being flushed out with the waste liquid during drainage, the cavity's flow channel uses a semi-open, sealed design. This design means the liquid inside the cavity cannot drain quickly, requiring someone to hold the cleaning equipment filled with waste liquid for an extended period while waiting for it to drain.

[0053] To prevent contaminants in the wastewater from being discharged along with the liquid in the wastewater and to improve the discharge efficiency of the liquid in the wastewater, in a first aspect, embodiments of this application provide a liquid-passing structure, see below. Figure 1-6 As shown, the liquid-passing structure includes a liquid-passing chamber 11, a one-way valve 12, and a filter element 13. The liquid-passing chamber has a first inlet and a second inlet; the one-way valve is connected to the first inlet and the second inlet of the liquid-passing chamber and is configured to close in the direction from the first inlet to the second inlet; and the filter element is disposed on the side of the liquid-passing chamber and communicates with the liquid-passing chamber, so that when the one-way valve is closed, liquid in the sewage flows into the liquid-passing chamber through the filter element on the side of the liquid-passing chamber and then discharges from the second inlet; the flow cross-section of the filter element is larger than the flow cross-section of the second inlet and the second inlet of the liquid-passing chamber.

[0054] Specifically, see Figure 6 As shown, the first inlet and the second inlet are located on the left and right sides of the liquid passage chamber 11, respectively. The second inlet on the left side of the liquid passage chamber 11 is connected to the connecting channel 5, and the first inlet on the right side of the liquid passage chamber 11 is connected to the one-way valve. Specifically, the one-way valve 12 can be connected to the upper side of the liquid passage chamber 11. Figure 6 The solid lines in the diagram indicate the flow direction of the waste liquid when it enters the liquid passage structure, while the dashed lines indicate the flow direction of the liquid when it exits the liquid passage structure.

[0055] The one-way valve is configured to be open when dirty liquid flows from the second inlet to the first inlet of the liquid passage chamber; and closed when dirty liquid flows from the second inlet to the first inlet of the liquid passage chamber. The filter element 13 is located on the lower part near the right end of the liquid passage chamber and communicates with the liquid passage chamber 11.

[0056] When liquid needs to be discharged, the one-way valve is closed along the flow direction indicated by the dotted line, i.e., the one-way valve is sealed at the blocking position 6. Thus, when the sewage impacts the one-way valve from right to left and then flows downwards, the liquid in the sewage flows back into the lower right side of the liquid passage chamber 11 and enters the liquid passage chamber through the filter element, before being discharged from the left end of the liquid passage chamber. Due to the filtering effect of the filter element, dirt in the sewage will not enter the liquid passage chamber through the filter element, thus preventing dirt from being discharged along with the liquid. To avoid excessively long waiting times when the sewage is discharged, the flow cross-section of the filter element is larger than the flow cross-section of the second inlet and outlet of the liquid passage chamber. Optionally, the flow cross-section of the filter element is larger than the flow cross-section at the other end of the liquid passage chamber. Furthermore, the flow cross-section of the filter element is 1.2 times, 1.5 times, 1.8 times, 2 times, 2.5 times, or 3 times the flow cross-section at the other end of the liquid passage chamber; this is only an example and not a limitation.

[0057] Therefore, in this embodiment of the liquid flow structure, when the sewage flows from the right opening of the liquid flow chamber to the left opening of the liquid flow chamber, only the liquid in the sewage is discharged without discharging or discharging as little dirt as possible, thereby improving the discharge efficiency of the liquid in the sewage.

[0058] It is understood that in some embodiments, the second inlet and outlet of the liquid passage cavity of the liquid passage structure can be connected to the inlet through the connecting channel 5. The inlet can be provided with a suction nozzle, so the liquid passage cavity of the liquid passage structure can be connected to the suction nozzle through the connecting channel 5.

[0059] Therefore, in this embodiment, during liquid discharge, the waste liquid flows from the closed direction of the one-way valve to the one-way valve, and after being blocked by the one-way valve, flows to the filter element on the side of the liquid passage chamber. The liquid in the waste liquid flows into the liquid passage chamber through the filter element and then discharges from the opening of the first inlet / outlet of the liquid passage chamber. Dirt in the waste liquid cannot enter the liquid passage chamber through the filter element. Thus, the liquid passage structure prevents dirt in the waste liquid from being discharged with the liquid in the waste liquid and improves the discharge efficiency of the liquid in the waste liquid.

[0060] In some embodiments, the one-way valve is further configured such that the second inlet / outlet of the liquid passage chamber opens toward the first inlet / outlet of the liquid passage chamber, so that when the one-way valve is open, a portion of the liquid in the sewage flows sequentially through the second inlet / outlet at one end of the liquid passage chamber, the first inlet / outlet of the liquid passage chamber, and the one-way valve before being discharged from the first inlet / outlet of the liquid passage chamber; another portion of the liquid in the sewage flows sequentially through the second inlet / outlet of the liquid passage chamber and the filter element before being discharged from the side of the liquid passage chamber.

[0061] Specifically, see Figure 6As shown. The force applied to the check valve along the solid line (i.e., from left to right in the liquid flow chamber) is the opening direction of the check valve, and the force applied to the check valve 12 from right to left is the closing direction. Therefore, when the waste liquid impacts the check valve from right to left, the check valve is in the closed state, thus preventing waste liquid from flowing from the right side of the check valve to the left side. See also... Figure 6 As shown, when the sewage flows along the dotted line and impacts the one-way valve from the right side, the sewage is blocked by the one-way valve and flows downward to the filter element on the lower side of the liquid passage chamber. Thus, the liquid in the sewage enters the liquid passage chamber from below the filter element, and then the liquid in the sewage is discharged from the left end of the liquid passage chamber.

[0062] When the waste liquid flows into the liquid passage chamber along the solid line, a portion of the waste liquid will be discharged from the right end of the chamber, i.e., it will impact the check valve from left to right, opening the right outlet of the liquid passage chamber; the remaining liquid will flow back into the chamber through the filter element from the lower part of the liquid passage chamber. This method increases the flow cross-section of the waste liquid through the liquid passage chamber, thereby shortening the time the waste liquid spends passing through the liquid passage structure during inlet, and improving the inlet efficiency.

[0063] Optionally, the one-way valve includes a connecting part and a baffle plate. The connecting part is fixedly connected to the side of the first inlet / outlet of the liquid passage chamber. The connecting part is rotatably connected to the baffle plate so that when liquid is discharged from the liquid passage chamber, the baffle plate rotates to the first inlet / outlet of the liquid passage chamber and closes the first inlet / outlet of the liquid passage chamber. When liquid is introduced into the liquid passage chamber, the baffle plate moves away from the first inlet / outlet of the liquid passage chamber and opens the first inlet / outlet of the liquid passage chamber.

[0064] See Figure 12 As shown, in one embodiment, the one-way valve includes a connecting part 122 and a baffle 121. The connecting part 122 is fixedly connected to the upper part on the right side of the liquid passage chamber. Optionally, the connecting part is hinged to the baffle 121 via a hinge part 123, and the connecting part is connected to the upper part of one end of the liquid passage chamber via a fastener 124.

[0065] When liquid is discharged, the baffle 121 rotates to the right end of the liquid passage chamber, closing the right end of the liquid passage chamber, thereby preventing the sewage from being discharged from the right end of the liquid passage chamber during discharge. Due to the blocking effect of the one-way valve on the sewage, after the sewage is filtered by the filter element, the liquid in the sewage finally enters the liquid passage chamber from the lower part of the liquid passage chamber and then exits from the left end of the liquid passage chamber. When liquid is entering the liquid passage chamber, the baffle moves away from the right end of the liquid passage chamber under the impact of the incoming sewage, thereby opening the right end of the liquid passage chamber, and part of the liquid in the sewage passes through the filter element 13 from the lower part of the right end of the liquid passage chamber.

[0066] See Figure 14-16As shown, in another embodiment, the one-way valve includes a fixing member 142, a folding member 141, and a sealing member 140; the fixing member 142 is rotatably connected to the sealing member 140 via the folding member 141, so that when the sealing member is rotated to the first inlet / outlet of the liquid passage chamber, the sealing member seals the first inlet / outlet of the liquid passage chamber.

[0067] The first inlet / outlet side of the liquid passage cavity is provided with a connecting hole; the fixing member is provided with a connecting member; the connecting member 143 includes a rod, one end of which has a protrusion, so that when the protrusion squeezes the connecting hole from one side to the other side of the connecting hole, the fixing member and the protrusion will hold the wall of the first inlet / outlet side of the liquid passage cavity on the outside of the rod.

[0068] The fastener, the connector, the folding member, and the sealing member are integrally formed.

[0069] Specifically, see Figure 14-16 As shown, the check valve is a quick-release integrated check valve, assembled and fixed without screws or any auxiliary materials; the check valve is integrally molded. The material used can be elastic and flexible materials such as plastic. The check valve includes a fixing component 142, a folding component 141, and a sealing component 140; the fixing component 142 and the sealing component 140 can be plate-shaped materials; the fixing component and the sealing component are rotatably connected through the folding component to achieve sealing and opening operations of the first inlet and outlet of the liquid passage chamber.

[0070] The connector on the fastener includes a rod and a protrusion at one end of the rod.

[0071] Optionally, the connector can be a mushroom head 144 with a constriction 145. The sidewall of the first inlet / outlet of the liquid chamber has a connecting hole. During installation, the mushroom head 144 squeezes the connecting hole from the outside of the first inlet / outlet of the liquid chamber, enlarging the diameter of the connecting hole. After the mushroom head enters the liquid chamber through the connecting hole, the connecting hole returns to its original shape, thereby locking the sidewall of the first inlet / outlet of the liquid chamber onto the constriction, thus fixing the fastener to the sidewall 146 of the liquid chamber. Optionally, there are multiple connecting holes and multiple mushroom heads with constrictions.

[0072] Using the above method, the check valve can be assembled and fixed without screws or any auxiliary materials, and it is also convenient for quick disassembly and replacement of the check valve.

[0073] See Figure 7-11 As shown, in some embodiments, the filter element includes a frame and a filter screen 1323; the frame has channels; the filter screen is used to cover the channels of the frame; the frame is connected to the side of the liquid passage chamber.

[0074] A filter screen is provided on the frame; the frame is connected to the side of the liquid passage chamber.

[0075] It is understood that there can be one or more filter elements. When there are multiple filter elements, they can be located in one or more places within the liquid passage chamber. Optionally, the filter element can also be arranged in a ring shape on the side of the liquid passage chamber. For example, the filter element can be a spiral structure, spirally arranged along the side wall of the liquid passage chamber; the filter element can also be a closed ring structure arranged on the side wall of the liquid passage chamber, without limitation.

[0076] To facilitate disassembly, installation, and cleaning of the filter element, the liquid passage chamber can be detachably connected to the filter element; this is not a limitation.

[0077] Optionally, in some embodiments, the side of the fluid passage cavity is provided with an installation port; the installation port is provided with a slot, and the outer side of the frame is provided with a locking block, and the frame and the installation port are connected by the slot and the locking block.

[0078] In some embodiments, the side of the liquid passage chamber is provided with an installation port; the installation port is provided with a sliding groove 112, and a locking block 111 is provided in the sliding groove. A slider is provided on the outside of the frame. When the outside of the frame slides in the sliding groove, the slider 112 presses the locking block 111, so that the slider 112 deforms and slides into the sliding groove to restore its shape and is locked into the sliding groove by the locking block. To facilitate the pushing and pulling of the filter element for disassembly and installation, a push-pull member 131 is provided on the lower side of the filter element.

[0079] See Figure 3 and 4 As shown, the mounting opening is rectangular, and two sliding grooves 112 are located on a pair of opposite sides of the mounting opening; the frame is rectangular, and two sliders are respectively located on a pair of opposite sides of the frame. When the frame slides within the corresponding two sliding grooves on a pair of opposite sides, the sliders press against the locking blocks 111, causing the sliders to deform and slide into the sliding grooves, restoring their shape and being locked into the sliding grooves 112 by the locking blocks. See [link to documentation] for the structure of the frame sliding into the sliding grooves 112. Figure 2 As shown, the structure of the frame after being disassembled from the slide groove 112 is shown in the figure. Figure 3 As shown.

[0080] Optionally, in some embodiments, to facilitate filter removal, the frame includes: a first fastening bracket 132 and a second fastening bracket 133; the through holes of the first and second fastening brackets communicate to form the channel, and the first and second fastening brackets fasten each other to detachably fix the filter between the first and second fastening brackets in the channel. The filter can be made of various materials, such as plastic or metal like stainless steel, and is not limited here.

[0081] Optionally, the first and second fastening frames are rectangular frames with a through hole in the middle, and the through hole of the first and second fastening frames has the same size and shape. When the first and second fastening frames are fastened together, the through holes of the first and second fastening frames form the channel. The filter screen is disposed at both ends or inside the channel, which is not limited here.

[0082] See Figure 7 As shown, the two sliders include a first slider 1321 and a second slider 1322. The first slider 1321 is located on the left side of the first fastening frame 132, and the second slider 1322 is located directly opposite the first fastening frame 132 and the first slider 1321. Thus, when the first fastening frame slides into the slide groove 112, the first and second sliders can deform after pressing the locking block, causing the opposite sides of the first fastening frame to slide into the slide groove 112. After entering the slide groove 112, the first and second sliders return to their original shape, thereby locking the first and second sliders in the slide groove, thus completing the detachable installation of the first fastening frame.

[0083] In some embodiments, both the first and second fastening frames are rectangular structures; the first fastening frame has straight grooves on its four sides, and the four grooves are connected end to end to form a rectangular slot; the second fastening frame has straight blocks on its four sides, and the four blocks are connected end to end to form a rectangular block; the blocks and the slots are fastened together to detachably fix the filter 1323 between the first and second fastening frames.

[0084] Optionally, the tank includes a first tank, a second tank, and a third tank; the first tank, the second tank, and the third tank are arranged sequentially to form a first stepped structure;

[0085] The card block includes a first-stage block, a second-stage block, and a third-stage block; the first-stage block, the second-stage block, and the third-stage block are arranged sequentially to form a second-step structure; when the card body and the card slot are engaged, the first-stage block engages with the first slot, the second-stage block engages with the second slot, and the third-stage block engages with the third slot.

[0086] See Figure 7 and 8 As shown, specifically, the groove includes a first groove 1325, a second groove 1326, and a third groove 1327 arranged in a stepped manner; the first groove 1325, the second groove 1326, and the third groove 1327 are arranged in a stepped manner, gradually moving towards the bottom of the first fastening frame. The four grooves are connected end to end to form a rectangular structure, so that all four sides of the first fastening frame 132 have the first groove 1325, the second groove 1326, and the third groove 1327 distributed in a stepped manner.

[0087] See Figure 9-11 As shown, specifically, the locking blocks include a first step block 1331, a second step block 1332, and a third step block 1333 arranged in a stepped manner. The first step block 1331, the second step block 1332, and the third step block 1333 are arranged sequentially towards the bottom of the first locking frame in a stepped manner. The four locking blocks are connected end to end to form a rectangular structure, so that all four sides of the second locking frame 133 have the first step block 1331, the second step block 1332, and the third step block 1333 distributed in a stepped manner.

[0088] When the first fastening frame 132 and the second fastening frame 133 are fastened together, the first step block 1331 fastens with the first groove 1325, the second step block 1332 fastens with the second groove 1326, and the third step block 1333 fastens with the third groove 1327. This method ensures a more secure fastening between the first fastening frame 132 and the second fastening frame 133.

[0089] Optionally, the area of ​​the filter screen is smaller than the area of ​​the through hole of the first fastening frame, thereby leaving a strip-shaped gap 1324 above the through hole of the first fastening frame. A fastening block 1334 for fastening into the gap 1324 is provided at a corresponding position on the second fastening frame. This method makes the filter screen easier to disassemble and more securely fixed between the first and second fastening frames.

[0090] Secondly, embodiments of this application provide a cleaning device, see [link to relevant documentation]. Figure 13 As shown, it includes: the aforementioned liquid-passing structure 1.

[0091] The functions and effects of the technical features in this technical solution that are similar to or related to the aforementioned technical solution are similar to those in the aforementioned technical solution, and the inventive concept and beneficial effects of this technical solution are similar to those in the aforementioned technical solution, so they will not be repeated here.

[0092] Furthermore, the cleaning equipment also includes: a suction nozzle 4, a connecting channel 5, and a pumping device 2; the suction nozzle 4 is connected to the liquid passage structure through the connecting channel; the pumping device 2 is used to generate suction so that the sewage in the suction nozzle is sucked into the liquid passage chamber of the liquid passage structure through the suction nozzle and the one-way valve is opened under the action of suction.

[0093] Specifically, see Figure 13 As shown, the pumping device 2 includes a power unit and a cavity, which are connected to the liquid passage chamber 11; a handle 3 is connected to the outside of the power unit.

[0094] The power unit is located inside the cavity. When the pumping device starts, the power unit generates negative pressure within the cavity, which is transmitted to the right end of the liquid passage chamber 11. The one-way valve is opened under the action of the negative pressure. (See reference...) Figure 6 As shown, the sewage is drawn into the liquid passage chamber 11 from the left end opening of the liquid passage chamber, and then enters the cavity through the right end of the liquid passage chamber; at the same time, a small portion of the sewage liquid is drawn into the cavity from the top of the filter element under the action of negative pressure suction, thereby improving the liquid entry efficiency of the sewage liquid into the cavity.

[0095] When the waste liquid needs to be discharged from the cavity, due to the disappearance of negative pressure, the baffle 121 of the one-way valve returns to the blocking position 6 under the action of gravity, thereby sealing the right end of the liquid passage chamber. The waste liquid impacts the one-way valve from the right end to the left end, making the baffle 121 of the one-way valve better seal the right end of the liquid passage chamber, and the liquid in the waste liquid flows along... Figure 6 The dotted line enters below the filter element, passes through the filter element, and enters the cavity, eventually exiting from the left end of the cavity. This avoids the problem of dirt in the sludge being discharged with the liquid in the sludge, and improves the discharge efficiency of the liquid in the sludge.

[0096] Therefore, the liquid-passing structure of this application embodiment enables the cleaning equipment to avoid the discharge of dirt in the sewage along with the liquid in the sewage, thereby improving the discharge efficiency of the liquid in the sewage and improving the liquid inlet efficiency of the sewage into the cleaning equipment.

[0097] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A liquid-permeable structure, characterized in that, include: The liquid passage chamber has a first inlet and a second inlet / outlet; A one-way valve, connected to the first inlet and outlet of the liquid passage chamber, is configured to close in the direction from the first inlet and outlet of the liquid passage chamber to the second inlet and outlet of the liquid passage chamber; A filter element is provided on the side of the liquid passage chamber and communicates with the liquid passage chamber so that when the one-way valve is closed, the liquid in the sewage flows into the liquid passage chamber through the filter element on the side of the liquid passage chamber and then discharges from the second inlet and outlet of the liquid passage chamber.

2. The liquid-passing structure according to claim 1, characterized in that, The flow cross-section of the filter element is larger than the flow cross-section of the second inlet and outlet of the liquid passage chamber.

3. The liquid-passing structure according to claim 1, characterized in that, The one-way valve is also configured such that the second inlet / outlet of the liquid passage chamber opens toward the first inlet / outlet of the liquid passage chamber, so that when the one-way valve is open, a portion of the liquid in the sewage flows sequentially through the second inlet / outlet of the liquid passage chamber, the first inlet / outlet of the liquid passage chamber, and the one-way valve before being discharged from the first inlet / outlet of the liquid passage chamber; another portion of the liquid in the sewage flows sequentially through the second inlet / outlet of the liquid passage chamber and the filter element before being discharged from the side of the liquid passage chamber.

4. The liquid-passing structure according to claim 1, characterized in that, The one-way valve includes a connecting part and a baffle. The connecting part is fixedly connected to the side of the first inlet / outlet of the liquid passage chamber. The connecting part is rotatably connected to the baffle so that when liquid is discharged from the liquid passage chamber, the baffle rotates to the first inlet / outlet of the liquid passage chamber and closes the first inlet / outlet of the liquid passage chamber. When liquid enters the liquid passage chamber, the baffle is moved away from the first inlet / outlet of the liquid passage chamber, thereby opening the first inlet / outlet of the liquid passage chamber.

5. The liquid-passing structure according to claim 1, characterized in that, The one-way valve includes a fixing member, a folding member, and a sealing member; the fixing member is rotatably connected to the sealing member through the folding member, so that when the sealing member is rotated to the first inlet / outlet of the liquid passage chamber, the sealing member seals the first inlet / outlet of the liquid passage chamber. The first inlet / outlet side of the liquid passage cavity is provided with a connecting hole; the fixing member is provided with a connecting member; the connecting member includes a rod, one end of which has a protrusion, so that when the protrusion squeezes the connecting hole from one side to the other side of the connecting hole, the fixing member and the protrusion will lock the wall of the first inlet / outlet side of the liquid passage cavity on the outside of the rod. The fastener, the connector, the folding member, and the sealing member are integrally formed.

6. The liquid-passing structure according to claim 1, characterized in that, The filter element includes: A framework with channels; And a filter screen for covering the channels of the frame; The frame is connected to the side of the fluid passage chamber.

7. The liquid-passing structure according to claim 6, characterized in that, The side of the fluid passage cavity is provided with an installation port; the installation port is provided with a slot, and the outer side of the frame is provided with a locking block. The frame and the installation port are connected by the slot and the locking block; or the installation port is provided with a sliding groove, the sliding groove is provided with a locking block, and the outer side of the frame is provided with a slider. When the outer side of the frame slides in the sliding groove, the slider squeezes the locking block, so that the slider is deformed and slides into the sliding groove to restore its shape and is locked into the sliding groove by the locking block.

8. The liquid-passing structure according to claim 7, characterized in that, The mounting opening is rectangular; two sliding grooves are located on a pair of opposite sides of the mounting opening; the frame is rectangular, and two sliders are located on a pair of opposite sides of the frame; when the sliders slide within the corresponding two sliding grooves on a pair of opposite sides of the frame, the sliders press the locking blocks, causing the sliders to deform and slide into the sliding grooves to restore their shape and be locked into the sliding grooves by the locking blocks.

9. The liquid-passing structure according to claim 6, characterized in that, The frame includes: a first fastening frame and a second fastening frame; the through holes of the first fastening frame and the second fastening frame communicate to form the channel, and the first fastening frame and the second fastening frame fasten each other to detachably fix the filter screen to the channel between the first fastening frame and the second fastening frame.

10. A cleaning device, characterized in that, include: The liquid-passing structure according to any one of claims 1-9; The suction nozzle is connected to the liquid-passing structure via a connecting channel; And a pumping device, used to generate suction so that the sewage in the suction nozzle is drawn into the liquid passage chamber of the liquid passage structure through the suction nozzle and opens the one-way valve under the action of suction.

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