Water tank and its filter components and cleaning machine

Abstract

This application relates to the field of cleaning technology, providing a water tank, its filter assembly, and a cleaning machine. The water tank includes a tank body with an inlet and an outlet. The filter assembly is adapted to be disposed inside the tank body and is used to filter liquid entering the tank body through the inlet or flowing out of the tank body through the outlet. The filter assembly includes a filter cylinder, a cover, and a scale inhibitor. One end of the filter cylinder is an open end with an opening, and the peripheral wall of the filter cylinder has filter holes. The cover is disposed at the open end of the filter cylinder and covers the open end. The cover has a water passage hole communicating with the inner cavity of the filter cylinder. The scale inhibitor is disposed in the inner cavity of the filter cylinder. The filter assembly of the water tank provided by this application can improve the cleaning effect of the cleaning machine.

Description

Technical Field

[0001] This application belongs to the field of cleaning technology, and more specifically, relates to a water tank and its filter assembly and a cleaning machine. Background Technology

[0002] Cleaning machines are used to clean tableware, drinking containers (such as water cups and baby bottles), and other items. Cleaning machines are usually equipped with a water tank for storing cleaning solution, which can be added to the cleaning chamber through a water delivery assembly.

[0003] To improve the cleanliness of the cleaning fluid added to the cleaning chamber, the inlet or outlet of the water tank is usually equipped with a filter structure to filter the cleaning fluid. However, the filter structure in this technology only filters impurities in the cleaning fluid and cannot remove metal ions. Metal ions in the cleaning fluid can easily cause scale buildup on the items being cleaned, thus affecting the cleaning effect. Utility Model Content

[0004] The purpose of this application is to provide a water tank, its filter assembly, and a cleaning machine to improve the cleaning effect.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: In a first aspect, this application provides a filter assembly for a water tank. The water tank includes a tank body with an inlet and an outlet. The filter assembly is adapted to be disposed inside the tank body and is used to filter liquids entering the tank body through the inlet or flowing out of the tank body through the outlet. The filter assembly includes a filter cylinder, a cover, and a scale inhibitor. One end of the filter cylinder is an open end with an opening, and the peripheral wall of the filter cylinder is provided with filter holes. The cover is disposed at the open end of the filter cylinder and covers the open end. The cover is provided with a water passage hole communicating with the inner cavity of the filter cylinder. The scale inhibitor is disposed in the inner cavity of the filter cylinder.

[0006] Through the above technical solution, the filter assembly can use a filter cartridge to filter the cleaning fluid entering the tank through the inlet or flowing out through the outlet, ensuring that the tank provides clean cleaning fluid. Furthermore, the scale inhibitor can polymerize metal ions in the cleaning fluid, which helps reduce or even prevents cleaning fluid containing metal ions from being discharged from the tank into the cleaning machine. This helps prevent scale buildup on the items being cleaned, thereby improving the cleaning effect.

[0007] Therefore, the filter assembly of the water tank provided in this application can improve the cleaning effect of the cleaning machine.

[0008] In some implementations, the water passage is configured to allow liquid to pass through while blocking scale inhibitors.

[0009] This prevents the scale inhibitor from being discharged through the water passage, thus avoiding it from entering the cleaning machine.

[0010] In some embodiments, the scale inhibitor is granular, the water passage is an elongated hole, the length of the water passage is larger than the particle size of the scale inhibitor, and the maximum width of the water passage is smaller than the particle size of the scale inhibitor.

[0011] In this way, the water passage hole can block the scale inhibitor and help prevent the scale inhibitor from clogging the water passage hole, thus facilitating the discharge of cleaning fluid from the water passage hole.

[0012] In some embodiments, a connecting groove recessed towards the inside of the filter cartridge is provided on the side of the cover away from the inner cavity of the filter cartridge, and the connecting groove communicates with the water passage hole. In this way, the cleaning fluid can enter the connecting groove after being discharged from the water passage hole, and then be discharged from the connecting groove. This helps to avoid the mating surface between the cover and the inner wall of the housing affecting the discharge of the cleaning fluid after the filter assembly is installed.

[0013] In some embodiments, the bottom wall of the connecting channel is provided with a relief groove that is recessed towards the inside of the filter cartridge. In this way, the relief groove can avoid the valve core of the drain valve of the water tank, thereby facilitating the opening of the water outlet.

[0014] In some embodiments, there are multiple water passages, which are spaced apart around the clearance groove. This increases the total area of ​​the water passages, facilitating the discharge of cleaning fluid from the inside of the filter cartridge.

[0015] In some implementations, the shielding cover is fixedly connected to the filter cartridge. This increases the strength of the connection between the shielding cover and the filter cartridge, helping to prevent the shielding cover from detaching from the filter cartridge.

[0016] In some embodiments, an annular positioning groove is provided on the inner circumferential side of the opening end of the filter cartridge, and an annular positioning protrusion is provided on the outer circumferential surface of the shielding cover, the annular positioning protrusion cooperating with the annular positioning groove. And / or, an annular locking protrusion is provided on the outer periphery of the open end of the filter cartridge, which is used to engage with the housing.

[0017] In this way, the engagement of the annular positioning protrusion and the annular positioning groove increases the contact area between the filter cartridge and the cover, which helps prevent the cleaning fluid inside the filter cartridge from leaking out from the contact area. Furthermore, the filter cartridge can be snapped into the housing via an annular locking protrusion, facilitating assembly and disassembly.

[0018] Secondly, this application provides a water tank, which includes a tank body and a filter assembly according to any of the above embodiments. The filter assembly is disposed inside the tank body and connected to the inner wall of the tank body. The tank body has a water inlet and a water outlet. The open end of the filter cylinder is connected to the water outlet and surrounds the water outlet.

[0019] The water tank provided in this application has the same or similar technical effects as the filter components of any of the above embodiments, and will not be described in detail here.

[0020] Thirdly, this application provides a cleaning machine, which includes a water tank according to the above embodiments. The cleaning machine includes a cleaning chamber and a flow guide bracket installed in the cleaning chamber. The water tank is installed in the cleaning chamber and includes a water outlet valve installed at the water outlet. The flow guide bracket is used to open the water outlet valve and connects to the water outlet. The cover is provided with a relief groove that is recessed toward the inside of the filter cartridge. The relief groove is used to avoid the valve core of the water outlet valve.

[0021] The cleaning machine provided in this application has the same or similar technical effects as the water tank in the above embodiments, which will not be repeated here. Attached Figure Description

[0022] 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.

[0023] Figure 1 This is one of the three-dimensional structural schematic diagrams of the cleaning machine provided in the embodiments of this application; Figure 2 This is a second three-dimensional structural schematic diagram of the cleaning machine provided in the embodiments of this application; Figure 3 For along Figure 1 Cross-sectional view of line AA in the middle; Figure 4 For along Figure 2 Cross-sectional view of the middle BB line; Figure 5 for Figure 3 A magnified view of a portion of point C in the middle; Figure 6 for Figure 4 A magnified view of a portion of point D; Figure 7 This is a three-dimensional structural diagram of the shielding cover provided in an embodiment of this application; Figure 8 A three-dimensional structural diagram of the filter cartridge provided in an embodiment of this application; Figure 9 For along Figure 8 Cross-sectional view of the EE line; Figure 10 For along Figure 8 Cross-sectional view of the middle FF line; Figure 11 for Figure 10 A magnified view of a portion of point G in the middle; Figure 12A three-dimensional structural diagram of the outlet valve and flow guide bracket provided in the embodiments of this application; Figure 13 For along Figure 12 Cross-sectional view of the middle HH line.

[0024] The following are the labeling elements in the figure: 1000 - Cleaning machine; 100 - Cleaning chamber; 1001 - Cleaning cavity; 1002 - Water inlet; 1003 - Circulation inlet; 1004 - Circulation outlet; 200-Water tank; 10-Tank body; 101-Water storage chamber; 102-Water outlet; 20-Filter cartridge; 21-Support cartridge; 2101-Closed end; 2102-Open end; 2103-Through hole; 2104-Mounting groove; 211-Annular locking protrusion; 212-Annular positioning groove; 213-Protruding tooth; 22-Filter screen; 30-Blocking cover; 31-Annular positioning protrusion; 301-Water passage hole; 302-Connecting groove; 303-Allowing groove; 40-Scale inhibitor; 50 - Water outlet pipe; 60 - Water outlet valve; 61 - Valve core; 6101 - Annular sealing groove; 62 - Sealing ring; 63 - Spring; 300-Flow guide bracket; 310-Flow guide shell; 3101-Flow guide cavity; 311-Top rod; 320-Sealing gasket; 330-Flow guide tube; 400 - Water injection pump; 500 - Water injection components. Detailed Implementation

[0025] 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.

[0026] 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.

[0027] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "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.

[0028] 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.

[0029] Please see Figure 1 , Figure 1 This is one of the three-dimensional structural schematic diagrams of the cleaning machine 1000 provided in the embodiments of this application. The cleaning machine 1000 includes a cleaning chamber 100, and the cleaning chamber 100 has a cleaning cavity 1001 inside. That is, the cleaning cavity 1001 is disposed within the cleaning chamber 100, and items to be cleaned can be placed into the cleaning cavity 1001 for cleaning. The cleaning machine 1000 needs to add cleaning fluid to the cleaning cavity 1001 to clean the items to be cleaned. The cleaning fluid can be clean water or a mixture of clean water and detergent, etc.

[0030] Please continue reading. Figure 1 and combined Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , Figure 2 This is the second three-dimensional structural schematic diagram of the cleaning machine 1000 provided in the embodiments of this application. Figure 3 For along Figure 1 Cross-sectional view of line AA in the middle. Figure 4 For along Figure 2 Cross-sectional view of the middle BB line. Figure 5 for Figure 3 A magnified view of a portion of point C. Figure 6 for Figure 4 A magnified view of a portion of point D.

[0031] The cleaning chamber 100 is provided with a water injection hole 1002 communicating with the cleaning cavity 1001. The cleaning machine 1000 provided in this application embodiment also includes a water tank 200 and a flow guide bracket 300. The water tank 200 is installed in the cleaning chamber 100 and is provided with a water storage cavity 101 and a water inlet hole and a water outlet hole 102 communicating with the water storage cavity 101. The cleaning liquid can enter the water storage cavity 101 through the water inlet hole and be stored therein, and can be discharged to the flow guide bracket 300 through the water outlet hole 102. The cleaning liquid in the water tank 200 can be exported through the flow guide bracket 300 and enter the cleaning cavity 1001 through the water injection hole 1002.

[0032] The water tank 200 includes a tank body 10, and the tank body 10 has a water storage cavity 101 inside. That is, the water storage cavity 101 is set inside the tank body 10, the water inlet is set at the upper end of the tank body 10, and the water outlet 102 is set at the lower end of the tank body 10.

[0033] Optionally, the cleaning machine 1000 provided in this application embodiment also includes a water injection pump 400 and a water injection component 500 installed in the cleaning chamber 100. The water injection component 500 is connected to the water injection hole 1002. The water injection pump 400 can be connected to the flow guide bracket 300 and the water injection component 500 through a pipeline, so that the cleaning fluid discharged by the flow guide bracket 300 can be drawn out and injected into the cleaning chamber 1001 through the water injection component 500.

[0034] Optionally, the cleaning machine 1000 provided in this embodiment further includes a washing circulation pump (not shown in the figure). The bottom wall of the cleaning chamber 1001 has a circulation inlet 1003 and a circulation outlet 1004. The washing circulation pump can connect the circulation inlet 1003 and the circulation outlet 1004 through a pipeline. Under the action of the washing circulation pump, the cleaning liquid in the cleaning chamber 1001 can be discharged through the circulation outlet 1004 and then enter the cleaning chamber 1001 through the circulation inlet 1003, thereby enabling the cyclic cleaning of the items to be cleaned in the cleaning chamber 1001. The washing circulation pump is not the focus of this application and is not limited thereto.

[0035] Optionally, the cleaning machine 1000 provided in this application embodiment further includes a spray device (not shown in the figure). The spray device is installed on the bottom wall of the cleaning chamber 1001 and communicates with the circulation inlet 1003. In this way, under the action of the washing circulation pump, the cleaning liquid can enter the spray device from the circulation inlet 1003, thereby using the spray device to clean the items to be cleaned. The spray device is not the focus of this application and is not limited thereto.

[0036] Optionally, the cleaning machine 1000 provided in this application embodiment also includes a sewage pump (not shown in the figure). The sewage pump can be connected to the circulation outlet 1004 through a pipeline. After cleaning is completed, the cleaning liquid in the cleaning chamber 1001 can be discharged through the circulation outlet 1004 under the action of the sewage pump. The sewage pump is not the focus of protection in this application and is not limited here.

[0037] It is understood that the cleaning machine 1000 provided in this application embodiment can be a baby bottle cleaning machine 1000, which can be used to clean baby bottles, nipples, breast pumps or other maternal and infant products. Of course, the cleaning machine 1000 can also be used to clean food, tableware, etc.

[0038] The inventors discovered that, in order to improve the cleanliness of the cleaning fluid added to the cleaning chamber 1001, the water inlet or outlet 102 of the water tank 200 is usually equipped with a filter structure to filter the cleaning fluid. However, the filter structure in the related technology only filters impurities in the cleaning fluid and cannot remove metal ions from it. Metal ions in the cleaning fluid can easily cause scale buildup on the items to be cleaned, thus affecting the cleaning effect.

[0039] Please refer to the following: Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 , Figure 7 This is a three-dimensional structural diagram of the shielding cover 30 provided in an embodiment of this application. To solve the above-mentioned technical problems, this application provides a filter assembly for a water tank 200. The filter assembly is disposed inside the tank body 10 and is used to filter liquids entering the tank body 10 through the water inlet or flowing out of the tank body 10 through the water outlet 102.

[0040] The filter assembly includes a filter cartridge 20, a shielding cover 30, and a scale inhibitor 40. One end of the filter cartridge 20 is an open end 2102 with an opening, and the peripheral wall of the filter cartridge 20 is provided with filter holes. The shielding cover 30 is disposed at the open end 2102 of the filter cartridge 20 and covers the open end 2102. The shielding cover 30 is provided with a water passage hole 301 that communicates with the inner cavity of the filter cartridge 20. The scale inhibitor 40 is disposed in the inner cavity of the filter cartridge 20.

[0041] It is understood that the filter cylinder 20 includes a support cylinder 21 and a filter screen 22. The support cylinder 21 includes a closed end 2101 and an open end 2102, which are arranged opposite to each other along the axial direction of the support cylinder 21. The open end 2102 of the support cylinder 21 is adapted to connect to one of the water inlet hole and the water outlet hole 102, and surrounds the water inlet hole and the water outlet hole 102. The cylinder wall of the support cylinder 21 is provided with a through hole 2103. The filter screen 22 is fixedly connected to the cylinder wall and covers the through hole 2103 to filter the liquid flowing through the through hole 2103. The filter holes on the peripheral wall of the filter cylinder 20 are the mesh holes of the filter screen 22.

[0042] Through the above technical solution, the filter assembly can use the filter cartridge 20 to filter the cleaning fluid entering the tank 10 through the inlet or flowing out of the tank 10 through the outlet 102, so that the water tank 200 can provide clean cleaning fluid. In addition, the scale inhibitor 40 can polymerize metal ions in the cleaning fluid, which helps to reduce or even prevent the discharge of cleaning fluid containing metal ions from the water tank 200 into the cleaning machine 1000, thereby helping to prevent scale formation on the items to be cleaned and thus improving the cleaning effect.

[0043] Therefore, the filter assembly of the water tank 200 provided in this application embodiment can improve the cleaning effect.

[0044] Optionally, the water passage 301 is configured to allow liquid to pass through while blocking the scale inhibitor 40, so that the scale inhibitor 40 will not be discharged from the water passage 301, which helps to prevent the scale inhibitor 40 from entering the cleaning machine 1000.

[0045] Please continue reading. Figure 5 , Figure 6 and Figure 7 In some embodiments, the scale inhibitor 40 is granular, the water passage 301 is an elongated hole, the length of the water passage 301 is larger than the particle size of the scale inhibitor 40, and the maximum width of the water passage 301 is smaller than the particle size of the scale inhibitor.

[0046] In this way, the water passage hole 301 can block the scale inhibitor 40 and help prevent the scale inhibitor 40 from clogging the water passage hole 301, thereby facilitating the discharge of cleaning fluid from the water passage hole 301.

[0047] Optionally, the water passage 301 can be a rectangular elongated hole, an arc-shaped elongated hole, or an elliptical elongated hole. Specifically, a rectangular elongated hole refers to a water passage 301 whose two long sides in the circumferential direction are parallel straight lines; an arc-shaped elongated hole refers to a water passage 301 whose two long sides in the circumferential direction are parallel arcs; and an elliptical elongated hole refers to a water passage 301 whose two long sides in the circumferential direction are opposite arcs, wherein the center of one long side faces the other long side.

[0048] Please continue reading. Figure 5 and Figure 6 In some embodiments, the side of the cover 30 away from the inner cavity of the filter cartridge 20 is provided with a connecting groove 302 that is recessed towards the inside of the filter cartridge 20, and the connecting groove 302 communicates with the water passage hole 301. In this way, the cleaning liquid can enter the connecting groove 302 after being discharged from the water passage hole 301, and it is convenient to be discharged from the connecting groove 302. This helps to avoid the mating surface between the cover 30 and the inner wall of the housing 10 after the filter assembly is installed from affecting the discharge of the cleaning liquid.

[0049] Optionally, the bottom wall of the connecting groove 302 is provided with a relief groove 303 that is recessed towards the inside of the filter cylinder 20. In this way, the relief groove 303 can avoid the valve core 61 of the drain valve of the water tank 200, thereby facilitating the opening of the water outlet 102.

[0050] Please continue reading. Figure 7 In some embodiments, there are multiple water passage holes 301, and the multiple water passage holes 301 are arranged at intervals around the clearance groove 303. This can increase the total area of ​​the water passage holes 301, which is beneficial for the cleaning liquid to be discharged from the inside of the filter cartridge 20.

[0051] In some embodiments, the cover 30 is fixedly connected to the filter cartridge 20. This improves the firmness of the connection between the cover 30 and the filter cartridge 20, and helps to prevent the cover 30 from detaching from the filter cartridge 20.

[0052] For example, the cover 30 is welded to the filter cartridge 20. For example, the cover 30 and the filter cartridge 20 are fixedly connected by screws, bolts, rivets or other fasteners.

[0053] Please continue reading. Figure 5 and Figure 6 In some embodiments, an annular positioning groove 212 is provided on the inner circumferential side of the opening end 2102 of the filter cylinder 20, and an annular positioning protrusion 31 is provided on the outer circumferential surface of the cover 30, the annular positioning protrusion 31 cooperating with the annular positioning groove 212.

[0054] In this way, the engagement of the annular positioning protrusion 31 and the annular positioning groove 212 can increase the mating area between the filter cartridge 20 and the cover 30, which helps to prevent the cleaning fluid in the filter cartridge 20 from leaking from the mating point of the annular positioning protrusion 31 and the annular positioning groove 212.

[0055] Optionally, an annular locking protrusion 211 is provided on the outer periphery of the open end 2102 of the filter cartridge 20, which is used to engage with the housing 10. It can be understood that the housing 10 is provided with a groove that mates with the annular locking protrusion 211, so that the filter cartridge 20 can be engaged with the housing 10 through the annular locking protrusion 211, which facilitates disassembly and assembly.

[0056] Please refer to the following: Figure 8 , Figure 9 , Figure 10 and Figure 11 , Figure 8 This is a three-dimensional structural diagram of the filter cartridge 20 provided in the embodiments of this application. Figure 9 For along Figure 8 Cross-sectional view of the EE line. Figure 10 For along Figure 8 Cross-sectional view of the FF line. Figure 11 for Figure 10 A magnified view of a portion of point G in the middle.

[0057] In some embodiments, the outer peripheral surface of the cylinder wall is provided with a mounting groove 2104, a through hole 2103 is provided in the bottom wall of the mounting groove 2104, and the filter screen 22 is installed in the mounting groove 2104.

[0058] The through hole 2103 penetrates the bottom wall of the mounting groove 2104, so that the cleaning fluid in the water storage chamber 101 can flow through the filter screen 22 into the support cylinder 21, so that the filter cylinder 20 can filter the cleaning fluid.

[0059] In addition, the mounting groove 2104 can limit the movement of the filter screen 22, which helps to improve the connection strength between the filter screen 22 and the cylinder wall, thereby improving the reliability of the filter cylinder 20.

[0060] In some embodiments, the bottom wall of the mounting groove 2104 is provided with a protrusion 213, the protrusion 213 surrounds the through hole 2103 and is spaced apart from the side wall of the mounting groove 2104.

[0061] It is understood that the cross-section of the protruding tooth 213 can be triangular or trapezoidal, and the protruding tooth 213 can fit against the edge of the filter screen 22. For example, the filter screen 22 is provided with a recess that mates with the protruding tooth 213; for example, the protruding tooth 213 can deform the filter screen 22, so that the side of the filter screen 22 facing the bottom wall of the mounting groove 2104 forms a recess that mates with the protruding tooth 213.

[0062] In this way, the mounting groove 2104 can increase the contact area with the filter screen 22 by using the protrusion 213, which is beneficial to improving the connection strength between the filter screen 22 and the cylinder wall, and also beneficial to improving the connection sealing between the mounting groove 2104 and the filter screen 22.

[0063] Optionally, the thickness of the filter screen 22 is equal to the depth of the mounting groove 2104. The outer surface of the filter screen 22 can be flush with the outer circumferential surface of the cylinder wall, or the outer surface of the filter screen 22 can protrude from the outer circumferential surface of the cylinder wall. That is, the filter screen 22 can fill the mounting groove 2104. The impurities filtered out by the filter screen 22 are not easy to accumulate in the mounting groove 2104, which helps to avoid clogging the filter screen 22 and thus improves the filtration effect.

[0064] For example, the outer surface of the filter screen 22 is aligned with the outer peripheral surface of the cylinder wall.

[0065] In some embodiments, the filter screen 22 is welded to the cylinder wall, for example, the filter screen 22 is ultrasonically welded to the cylinder wall, which helps to improve the firmness of the connection between the filter screen 22 and the cylinder wall.

[0066] In other embodiments, the filter screen 22 is integrally formed with the cylinder wall. In this way, the filter cylinder 20 provided in this application embodiment does not suffer from weak connection strength between the filter screen 22 and the cylinder wall, thus increasing the connection strength. In other embodiments, the filter screen 22 can be bonded to the cylinder wall, which facilitates the connection between the filter screen 22 and the cylinder wall and helps to reduce production costs.

[0067] In other embodiments, the filter screen 22 can be fixedly connected to the cylinder wall by threaded connectors, for example, the filter screen 22 can be fixedly connected to the cylinder wall by screws, which makes it easy to replace the filter screen 22 and thus facilitates the maintenance of the filter cylinder 20.

[0068] In some embodiments, the thickness of the filter screen 22 is greater than or equal to 0.1 mm and less than or equal to 0.3 mm. This allows the filter cartridge 20 to achieve a good filtration effect on the cleaning liquid. Furthermore, while meeting the filtration requirements, the thickness of the filter screen 22 is not greater than 0.3 mm, which helps to reduce manufacturing costs.

[0069] Optionally, the thickness of the filter screen 22 is greater than or equal to 0.1 mm and less than or equal to 0.2 mm.

[0070] Optionally, the thickness of the filter screen 22 is greater than or equal to 0.2 mm and less than or equal to 0.3 mm.

[0071] Optionally, the thickness of the filter screen 22 is greater than or equal to 0.15 mm and less than or equal to 0.25 mm.

[0072] Optionally, the thickness of the filter screen 22 can be 0.1mm, 0.125mm, 0.15mm, 0.175mm, 0.2mm, 0.225mm, 0.25mm, 0.275mm, 0.3mm, etc.

[0073] Optionally, the mesh count of the filter screen 22 is greater than or equal to 20 and less than or equal to 200, which helps to improve the filtration effect on fine impurities.

[0074] Optionally, the mesh count of filter 22 is greater than or equal to 100 and less than or equal to 200.

[0075] Optionally, the mesh count of filter 22 is greater than or equal to 50 and less than or equal to 100.

[0076] Optionally, the mesh count of filter 22 is greater than or equal to 20 and less than or equal to 50.

[0077] Optionally, the mesh count of the filter screen 22 can be 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, etc.

[0078] It is understood that the embodiments of this application can select a suitable filter screen 22 according to the type of items to be cleaned.

[0079] Optionally, the filter screen 22 can be a nylon filter screen 22, which can have better corrosion resistance and high temperature resistance.

[0080] Of course, in other examples, the filter 22 can also be made of other materials, for example, the filter 22 can be a stainless steel filter 22.

[0081] Please continue reading. Figure 5 and Figure 6 and combined Figure 12 and Figure 13 , Figure 12 This is a three-dimensional structural diagram of the water outlet valve 60 and the flow guide bracket 300 provided in the embodiments of this application. Figure 13 For along Figure 12 Cross-sectional view of the middle HH line.

[0082] In some embodiments, the cleaning machine 1000 provided in this application further includes a water outlet valve 60 installed at the water outlet 102. The water tank 200 may include a water outlet pipe 50 connected to the tank body 10, the water outlet pipe 50 communicating with the water outlet 102, the water outlet valve 60 being disposed inside the water outlet pipe 50, and a flow guide bracket 300 installed in the cleaning chamber 100. The flow guide bracket 300 can open the water outlet valve 60 and communicate with the water outlet 102. The water outlet pipe 50 is located below the tank body 10 and can be integrally connected to the tank body 10.

[0083] It is understood that after the cleaning machine 1000 provided in this application is assembled, the water outlet valve 60 of the water tank 200 can be opened by the flow guide bracket 300, so that the cleaning liquid in the water tank 200 can flow into the flow guide bracket 300 through the water outlet hole 102, and then the cleaning liquid in the water storage chamber 101 can be discharged.

[0084] Optionally, the outlet valve 60 includes a valve core 61, which passes through the outlet hole 102 and the outlet pipe 50, and the valve core 61 is provided with limiting structures at both ends in the axial direction of the outlet pipe 50. For example, one end of the valve core 61 is located in the water storage chamber 101 and is provided with a first limiting structure, which prevents the valve core 61 from detaching from the housing 10.

[0085] Optionally, the outlet valve 60 includes a sealing ring 62 disposed on the outer periphery of the valve core 61, the sealing ring 62 being able to seal against the wall of the outlet hole 102. The valve core 61 has an annular sealing groove 6101 on its outer periphery, and the sealing ring 62 is disposed within the annular sealing groove 6101.

[0086] Optionally, the inner diameter of the water outlet pipe 50 is larger than the diameter of the water outlet hole 102, and the water outlet pipe 50 and the water outlet hole 102 are coaxially arranged. The other end of the valve core 61 is located inside the water outlet pipe 50, and the other end of the valve core 61 is provided with a second limiting structure. The radial dimension of the second limiting structure is smaller than the inner diameter of the water outlet pipe 50 and larger than the diameter of the water outlet hole 102. In this way, the second limiting structure of the valve core 61 can move axially inside the water outlet pipe 50.

[0087] Understandably, the valve core 61 can move along the axial direction of the water outlet pipe 50 between a first position and a second position. When the valve core 61 is in the first position, the sealing ring 62 on the outer periphery of the valve core 61 seals against the wall of the water outlet 102, preventing the cleaning fluid in the water storage chamber 101 from flowing out of the water outlet 102. When the valve core 61 is in the second position, the sealing ring 62 on the outer periphery of the valve core 61 moves upward and disengages from the water outlet 102, allowing the cleaning fluid in the water storage chamber 101 to flow out of the water outlet 102.

[0088] During the process of the valve core 61 moving from the first position to the second position, the valve core 61 moves upward and the clearance groove 303 of the cover 30 can avoid the valve core 61; during the process of the valve core 61 moving from the second position to the first position, the valve core 61 moves downward.

[0089] Optionally, the outlet valve 60 includes a spring 63, which is sleeved on the outer periphery of the valve core 61 and abuts against the second limiting structure and the bottom wall of the housing 10. In this way, when the valve core 61 moves from the first position to the second position under the action of external force, the spring 63 is compressed. After the external force disappears, the valve core 61 can move from the second position to the first position under the action of the elastic force of the spring 63 and its own gravity.

[0090] Optionally, the flow guide bracket 300 includes a flow guide shell 310 and a sealing gasket 320. The flow guide shell 310 is a hollow structure with an opening at one end and a flow guide cavity 3101, with the opening communicating with the flow guide cavity 3101. The end of the flow guide shell 310 with the opening is installed in the cleaning chamber 100 and cooperates with the water outlet pipe 50, so that the cleaning fluid in the water tank 200 can enter the flow guide wall. The sealing gasket 320 can be disposed between the flow guide shell 310 and the cleaning chamber 100 and between the flow guide shell 310 and the water outlet pipe 50, thus preventing leakage of the cleaning fluid entering the flow guide shell 310.

[0091] The guide shell 310 has a push rod 311 extending toward the valve core 61 inside. During the connection between the water tank 200 and the cleaning chamber 100, the push rod 311 can push the valve core 61 from the first position to the second position.

[0092] Optionally, the flow guide bracket 300 also includes a flow guide pipe 330 installed in the flow guide shell 310. The flow guide pipe 330 is connected to the flow guide cavity 3101. The flow guide pipe 330 can export the cleaning fluid in the flow guide cavity 3101. For example, the water injection pump 400 can be connected to the flow guide pipe 330.

[0093] The above are merely specific embodiments of this application and are 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 filter assembly for a water tank, characterized in that, The water tank includes a tank body having an inlet and an outlet. The filter assembly is adapted to be disposed inside the tank body and is used to filter liquid entering the tank body through the inlet or flowing out of the tank body through the outlet. The filter assembly includes: A filter cylinder, wherein one end of the filter cylinder is an open end with an opening, and the peripheral wall of the filter cylinder is provided with filter holes; A shielding cover is disposed at the open end of the filter cylinder and covers the open end. The shielding cover has a water passage hole communicating with the inner cavity of the filter cylinder. Scale inhibitor, wherein the scale inhibitor is disposed in the inner cavity of the filter cartridge.

2. The filter assembly as described in claim 1, characterized in that, The water passage is configured to allow liquid to pass through while blocking the scale inhibitor.

3. The filter assembly as described in claim 2, characterized in that, The scale inhibitor is granular, and the water passage is an elongated hole. The length dimension of the water passage is larger than the particle size of the scale inhibitor, and the maximum width dimension of the water passage is smaller than the particle size of the scale inhibitor.

4. The filter assembly as described in claim 1, characterized in that, The shielding cover has a communicating groove recessed towards the inside of the filter cylinder on the side away from the inner cavity of the filter cylinder, and the communicating groove communicates with the water passage hole.

5. The filter assembly as described in claim 4, characterized in that, The bottom wall of the connecting groove is provided with a relief groove that is recessed towards the inside of the filter cylinder.

6. The filter assembly as described in claim 5, characterized in that, There are multiple water passage holes, and the multiple water passage holes are arranged at intervals around the avoidance groove.

7. The filter assembly according to any one of claims 1 to 6, characterized in that, The shielding cover is fixedly connected to the filter cylinder.

8. The filter assembly according to any one of claims 1 to 6, characterized in that, The filter cartridge has an annular positioning groove on the inner circumferential side of the opening end, and the shielding cover has an annular positioning protrusion on the outer circumferential surface, the annular positioning protrusion cooperating with the annular positioning groove. And / or, the outer periphery of the opening end of the filter cartridge is provided with an annular locking protrusion, which is used to engage with the housing.

9. A water tank, characterized in that, The device includes a housing and a filter assembly as described in any one of claims 1 to 8, the filter assembly being disposed inside the housing and connected to the inner wall of the housing, the housing having a water inlet and a water outlet, the open end of the filter cylinder communicating with the water outlet and surrounding the water outlet.

10. A cleaning machine, characterized in that, The cleaning machine includes the water tank as described in claim 8, and includes a cleaning chamber and a flow guide bracket installed in the cleaning chamber. The water tank is installed in the cleaning chamber and includes a water outlet valve installed at the water outlet. The flow guide bracket is used to open the water outlet valve and communicates with the water outlet. The cover is provided with a relief groove recessed towards the inside of the filter cylinder. The relief groove is used to avoid the valve core of the water outlet valve.

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