A sewage tank applied to a cleaning device

Abstract

The application discloses a sewage tank applied to a cleaning device, which comprises a tank body, a tank cover detachably arranged on the top of the tank body and a filter basket assembly arranged in the tank body, a first probe assembly and a second probe assembly for detecting water level information in the tank body are arranged below the tank cover, and the filter basket assembly can isolate the first probe assembly and / or the second probe assembly from conductive sundries. Based on the above arrangement, the first probe assembly and / or the second probe assembly are not easy to contact or even cannot contact the conductive sundries, so that an interference closed loop path is avoided, and the detection precision of the water level is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cleaning equipment, in particular to a sewage tank applied to cleaning equipment. BACKGROUND

[0002] At present, the scrubber with water spraying function can clean the ground more effectively, so it is favored by consumers. The scrubber usually comprises a machine body, a clean water tank, a sewage tank, a water spraying system communicated with the clean water tank and a motor communicated with the sewage tank to provide suction. When the scrubber is used, the water spraying system sprays clean water to the ground to wet the pollutants on the ground, and the suction provided by the motor sucks the sewage into the sewage tank; in addition, the scrubber can also use the suction to clean the sewage originally existing on the ground.

[0003] REFERENCE Figure 1 The water level detection structure adopted by the existing sewage tank is as follows: a positive water level sensing probe a and a negative water level sensing probe b are arranged in the sewage tank c and are electrically connected with a power supply and a controller; when the water level in the sewage tank c contacts the positive water level sensing probe a and the negative water level sensing probe b at the same time, a closed loop path can be formed, and the controller can send a signal corresponding to the water level information. In the existing design, the positive water level sensing probe and the negative water level sensing probe are exposed in the sewage tank, and when the conductive impurities d (such as metal wires and noodles) with a relatively large length are adhered to the above two probes at the same time, the controller will be wrongly alarmed, thereby affecting the detection accuracy of the water level. SUMMARY

[0004] The present application aims to provide a sewage tank applied to cleaning equipment to solve the problem that the water level detection structure is prone to false alarm.

[0005] To achieve the above purpose, the present application adopts the following technical solutions:

[0006] A sewage tank comprises a tank body and a tank cover detachably arranged on the top of the tank body, a first probe assembly and a second probe assembly for detecting water level information in the tank body are arranged below the tank cover, and the second probe assembly is arranged above the first probe assembly.

[0007] The sewage tank further comprises a water filter basket assembly arranged in the tank body, which can isolate the first probe assembly and / or the second probe assembly from conductive impurities to avoid the formation of a closed loop path with interference.

[0008] As a preferred solution, the water filter basket assembly comprises a water filter basket for filtering water, which separates the cavity of the tank body into an upper space and a lower space; the water filter basket filters the water when the water enters from the upper space to the lower space.

[0009] The first probe assembly is arranged in the lower space and comprises a first probe and a second probe.

[0010] As a preferred solution, a plug-in guide structure is arranged between the water filter basket and the box body, or an inner section of the box body is configured as a special-shaped section, and a plug-in outer surface of the water filter basket is configured as a profiled structure matching the special-shaped section.

[0011] A plug-in guide structure is arranged between the box cover and the box body, or an inner section of the box body is configured as a special-shaped section, and a plug-in outer surface of the box cover is configured as a profiled structure matching the special-shaped section.

[0012] As a preferred solution, the water filter basket assembly comprises a water filter basket for filtering water and a handle part connected to a top of the water filter basket; the handle part is configured as a shield structure, a water passing hole is arranged on the shield structure, and the shield structure can be arranged outside the second probe assembly to prevent the second probe assembly from contacting conductive impurities.

[0013] As a preferred solution, the shield structure can be combined with part of the box cover to form a shield cavity for accommodating the second probe assembly, or

[0014] The shield structure can be combined with part of the box cover and part of the box body to form a shield cavity for accommodating the second probe assembly.

[0015] As a preferred solution, an upper end of the handle part has a width greater than that of a lower end.

[0016] As a preferred solution, the handle part is detachably combined with the water filter basket as a whole.

[0017] As a preferred solution, a fluid channel is arranged on the box body substantially along a height direction of the box body, one end of the fluid channel is formed as a sewage tank inlet, and the other end is formed as a cavity part inlet.

[0018] A first support table is arranged on an inner wall of the box body and / or a second support table is arranged on an outer wall of the fluid channel, and the first support table and the second support table are used to limit a downward movement amount of the water filter basket relative to the box body.

[0019] When the water filter basket and the box cover are both mounted on the box body, the shield covers the second probe assembly.

[0020] As a preferred solution, the water filter basket separates a cavity part of the box body into an upper space and a lower space, and the water filter basket filters water when water enters the lower space from the upper space.

[0021] The first probe assembly is arranged in the upper space; the first probe assembly comprises a first probe and a second probe, and the first probe is provided with a protective shell on the outer side, and a water inlet for blocking conductive sundries is formed on the protective shell, and water can flow through the water inlet.

[0022] As a preferred solution, the outer surface of the protective shell is substantially in the shape of an inverted cone.

[0023] As a preferred solution, the water inlet comprises a bottom water inlet at the bottom of the protective shell and a side water inlet at the side of the protective shell.

[0024] The first probe is entirely arranged in the protective shell, and the length of the first probe capable of contacting water is not less than 8 mm.

[0025] As a preferred solution, the distance between the lower end of the first probe and the lower end of the protective shell is more than 3 mm.

[0026] As a preferred solution, the width of the side water inlet is more than 3 mm.

[0027] As a preferred solution, the outer surface of the first probe is arranged in close contact with the inner surface of the protective shell, or the minimum distance between the outer surface of the first probe and the inner surface of the protective shell is not less than 2 mm.

[0028] As a preferred solution, a first probe body is electrically connected to the first probe, and a second probe body is electrically connected to the second probe; the first probe body and the second probe body are both connected to the bottom of the cover, and the outer side of the first probe body and the second probe body are both provided with an insulating layer.

[0029] As a preferred solution, the distance between the first probe and the second probe is 30-150 mm, and the creepage distance between the first probe and the second probe is more than 80 mm.

[0030] As a preferred solution, the height of the insulating layer is more than 50 mm.

[0031] As a preferred solution, a fluid channel is formed on the box body and extends substantially along the height direction of the box body, one end of the fluid channel is formed as a sewage tank inlet, and the sewage tank inlet is arranged at the bottom of the box body.

[0032] The sewage tank is installed on the fuselage from back to front, the top surface of the cover is formed as a first joint surface that is inclined downward from back to front, and the bottom surface of the box body is formed as a second joint surface that is inclined upward from back to front.

[0033] As a preferred solution, a placement seat is arranged at the lower part of the second joint surface, and the plane where the bottom end of the placement seat is located is substantially perpendicular to the height direction of the sewage tank.

[0034] As a preferred solution, the placing seat is configured as a U-shaped structure, and the front end of the U-shaped structure is configured as an open end.

[0035] Advantages of the present application:

[0036] The water filter basket assembly in the present application can isolate the first probe assembly and / or the second probe assembly from the conductive impurities, thereby avoiding the formation of a closed loop path with interference properties. Further, the present application configures the handle part as a shield structure, configures the first probe assembly in the lower space, and provides a protective shell on the outside of the first probe, and a series of methods, which not only effectively isolates the conductive impurities, but also improves the detection accuracy of the water level, and strengthens the installation stability of the water filter basket assembly, etc. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 is a schematic diagram of a water level detection structure in the background art;

[0038] Figure 2 is a schematic diagram of the overall structure of a sewage tank in an embodiment of the present application;

[0039] Figure 3 is a side view structural section view of the sewage tank in the present application; Figure 2

[0040] Figure 4 is a front view structural section view of the sewage tank in the present application; Figure 2

[0041] Figure 5 is a schematic diagram of the structure of a tank cover in an embodiment of the present application;

[0042] Figure 6 is a schematic diagram of the structure of a tank body in an embodiment of the present application;

[0043] Figure 7 is a schematic diagram of the structure of a water filter basket assembly in an embodiment of the present application;

[0044] Figure 8 is a schematic diagram of the structure of a water filter basket in an embodiment of the present application;

[0045] Figure 9 is a schematic diagram of the structure of a shield structure in an embodiment of the present application;

[0046] Figure 10 is a schematic diagram of the combination of a handle part and a water filter basket in an embodiment of the present application;

[0047] Figure 11 is a front view structural section view of a sewage tank in an embodiment of the present application;

[0048] Figure 12 ​​is a structural schematic view of the first probe and the second probe in an embodiment of the present application;

[0049] Figure 13 is Figure 12 is a front structural sectional view of the first probe and the second probe in the embodiment of the present application;

[0050] Figure 14 is a front structural sectional view of the first probe in an embodiment of the present application;

[0051] Figure 15 is a structural schematic view of the placing seat in an embodiment of the present application;

[0052] Figure 16 is a top structural schematic view of the box in an embodiment of the present application. DETAILED DESCRIPTION

[0053] The present application will be further described below in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, for the convenience of description, only the parts related to the present application are shown in the drawings, but not all the structures.

[0054] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or detachably connected, or integrated; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0055] In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "above" and "on" of the first feature to the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "under" and "under" of the first feature to the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0056] In the description of the embodiments, the terms "upper", "lower", "right", "left", and the like, orientation or positional relationships are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only used to distinguish in description, and have no special meaning.

[0057] The present application provides a sewage tank, which is applied to a cleaning device; the cleaning device can be a multifunctional vacuum cleaner, a scrubber, a window cleaner or a steam mop, but is not limited thereto.

[0058] Taking the scrubber as an example, the scrubber comprises a machine body, a cleaning member (e.g. a floor brush) is installed at a first end of the machine body, a handle is configured at a second end of the machine body, and a liquid treatment assembly is installed on the machine body. The liquid treatment assembly can comprise a motor, a clean water tank, a sewage tank, a water spraying system and the like. The motor, the clean water tank and the water spraying system are well known to those skilled in the art, and will not be described herein.

[0059] In use, the water spraying system sprays clean water from the clean water tank to the ground to wet the contaminants on the ground, and the suction provided by the motor sucks the water into the sewage tank to clean the ground. In addition, the suction of the scrubber can also be used to suck the water originally present on the ground into the sewage tank to clean the ground.

[0060] It can be understood that the sewage tank is configured as part of the air path in the scrubber: air flow can enter the inside of the sewage tank from the sewage tank inlet 1111 of the sewage tank; under the action of gravity, centrifugal force and the like, dry garbage, water, and sundries mixed in the water will remain in the sewage tank, and the air flow can be discharged to the outside of the sewage tank through the sewage tank outlet 120.

[0061] Referring to Figure 2 , Figure 3 and Figure 6 , the sewage tank in the present application comprises a tank body 11 and a tank cover 12; the tank body 11 forms a cavity capable of containing water and sundries therein, which has an open top opening 1103; the tank cover 12 is detachably arranged in the top opening 1103, so as to handle the water, sundries or clean the cavity. When the tank cover 12 is covered on the top opening 1103, the cavity only communicates with the outside through the sewage tank inlet 1111 and the sewage tank outlet 120.

[0062] As an embodiment of the present application, the cavity is provided with a first probe assembly and a second probe assembly; referring to Figure 4 and Figure 5The first probe assembly includes a first probe and a second probe, and the second probe assembly includes a third probe and a fourth probe. The first probe, the second probe, the third probe and the fourth probe are fixed to the cover 12 and extend downward from the bottom of the cover 12. Thus, the first probe assembly and the second probe assembly can be removed together with the cover 12, and it is more convenient to clean each component of the sewage tank.

[0063] Further, the first probe 211, the second probe 212, the third probe 221 and the fourth probe 222 are respectively the part of the first probe, the second probe, the third probe and the fourth probe which is in contact with the outside world and conducts electricity. The first probe 211 and the second probe 212 form the first probe assembly 21, and the third probe 221 and the fourth probe 222 form the second probe assembly 22.

[0064] The second probe assembly 22 is arranged above the front side or the rear side of the first probe assembly 21. Specifically, in the embodiment, the second probe assembly 22 is arranged above the rear side of the first probe assembly 21. Figure 3

[0065] When the water level contacts the first probe 211 and the second probe 212 at the same time, a closed loop electrical path can be formed to detect the water level information. When the water level contacts the third probe 221 and the fourth probe 222 at the same time, a closed loop electrical path can also be formed to detect the water level information. The first probe and the third probe can be positive water level sensing probes, or can be negative water level sensing probes. Correspondingly, the second probe and the fourth probe are negative water level sensing probes, or are positive water level sensing probes.

[0066] In a specific application scenario, due to the action of gravity, the water X accumulates from bottom to top in the cavity. When the water surface contacts the first probe 211 and the second probe 212, it indicates that the water accumulation in the cavity has reached a preset value. If the water continues to be filled into the cavity, the water may be discharged from the sewage tank through the sewage tank outlet 120. When the sewage tank is excessively used to be inclined or accidentally tilted, the water surface will contact the third probe 221 and the fourth probe 222, indicating that the deflection of the sewage tank relative to the vertical direction is large, and the water may also be discharged from the sewage tank through the sewage tank outlet 120. In the above conditions, a response function can be enabled, such as stopping (turning off the motor to interrupt the suction).

[0067] Referring to Figure 13 ​As an embodiment of the present application, the first probe further comprises a first probe body 213 electrically connected with the first probe head 211, and an insulating layer 23 is arranged on the outer side of the first probe body 213. The first probe body 213 can be an electric wire, and the insulating layer 23 is arranged on the outer side of the first probe body 213 in the form of injection molding. The first probe body 213 can also be a hollow or solid conductive rod, and the insulating layer 23 is arranged on the outer side of the first probe body 213 in the form of injection molding, spraying insulating paint, spraying insulating glue, and rubber coating.

[0068] For the convenience of production and cost saving, the first probe head 211 and the first probe body 213 are preferably integrally formed conductive rods.

[0069] Further, the second probe further comprises a second probe body 214 electrically connected with the second probe head 212, and an insulating layer 23 is arranged on the outer side of the second probe body 214. The second probe body 214 can have the same structure as the first probe body 213.

[0070] Referring to Figure 3 and Figure 6 In the present application, the box body 11 is configured with a fluid passage 111, one end of the fluid passage 111 is formed as a sewage tank inlet 1111, and the other end is formed as a cavity inlet 1112. After water, impurities, and the like flow through the sewage tank inlet 1111 and the cavity inlet 1112 in sequence, they enter the cavity.

[0071] To avoid the conductive impurities from causing an interference closed loop path to the first probe assembly and / or the second probe assembly, as shown in Figure 3 and Figure 4 , a water filter basket assembly 3 is arranged in the cavity, which comprises a water filter basket 31 and a handle 32 connected to the top of the water filter basket 31. The water filter basket 31 can be installed in the cavity through the top opening 1103, and the handle 32 facilitates the user to hold and install the water filter basket 31.

[0072] In an embodiment, the water filter basket 31 divides the cavity into an upper space 1101 and a lower space 1102, and the cavity inlet 1112 is arranged in the upper space 1101. During the process of water flowing from the upper space 1101 to the lower space 1102, at least part of the impurities in the upper space 1101 will be intercepted above the water filter basket 31.

[0073] To improve the overall capacity of the box body 11, the volume of the lower space 1102 is preferably greater than that of the upper space 1101. In this way, more sewage can be accommodated, thereby ensuring the single use time of the cleaning device.

[0074] For reference Figure 8Further, the first probe 211 and the second probe 212 are arranged in the lower space 1102, and the filter basket 31 is provided with a probe through hole 311 for guiding the first probe 213 and the second probe 214. It can be understood that the bottom end of the insulating layer 23 can be attached to the upper end of the probe through hole 311, can be arranged in the probe through hole 311, or can extend below the probe through hole 311. In this way, the conductive impurities cannot easily or even cannot contact the first probe 211 and / or the second probe 212, further avoiding the interference of the closed loop path, thereby improving the detection accuracy of the water level.

[0075] In the process of assembling the sewage tank, in order to enable the user to smoothly align the first probe assembly 21 with the probe through hole 311, the application configures the assembly structure of the filter basket 31 and the tank body 11 and the assembly structure of the tank cover 12 and the tank body 11 as foolproof structures, thereby improving the assembly efficiency and improving the user experience.

[0076] Specifically, the filter basket 31 and the tank body 11, and the tank cover 12 and the tank body 11 are all configured with plug-in guide structures. For example, one of the filter basket 31 and the tank body 11 is provided with a vertical first guide groove, and the other is provided with a first guide strip that can be matched with the first guide groove. When the first guide groove and the first guide strip are combined, they can effectively limit the unique combination position of the filter basket 31 and the tank body 11 in the circumferential direction, thereby achieving the foolproof effect. Obviously, the tank cover 12 and the tank body 11 are configured with plug-in guide structures, which can also achieve the foolproof effect. Since the position of the first probe assembly 21 relative to the tank cover 12 is fixed, and the position of the probe through hole 311 relative to the filter basket 31 is fixed, the first probe assembly 21 can be smoothly aligned with the probe through hole 311 at the preset position.

[0077] In addition, the internal cross section of the tank body 11 (i.e. the cavity cross section) can also be configured as a special-shaped cross section, and the plug-in outer surface of the filter basket 31 and the plug-in outer surface of the tank cover 12 can be configured as a profiled structure that matches the special-shaped cross section to achieve the foolproof effect. For example, the internal cross section of the tank body 11 can be configured as a trapezoidal structure, a triangular (non-right triangular) structure or an irregular shape, etc., while rectangular (there are two installation directions), right triangle (there are three installation directions), square (there are four installation directions), and circular (there are countless installation directions) are not suitable for being configured as a foolproof structure.

[0078] Referring to Figure 16In a specific embodiment, the above-mentioned irregular internal cross-sectional shape includes a first curved segment 1121, a second curved segment 1122 opposite to the first curved segment 1121, and a third curved segment 1123 and a fourth curved segment 1124 symmetrically arranged; the third curved segment 1123 and the fourth curved segment 1124 are both connected with the first curved segment 1121 to form a closed inner contour line, while the first curved segment 1121 and the second curved segment 1122 are asymmetrically arranged (may be composed of arcs with different numbers / curvatures, respectively); the outer contour of the insertion portion of the water filter basket 31 and the outer contour of the insertion portion of the box cover 12 both correspond to the above-mentioned inner contour line. In this way, the box cover 12, the water filter basket 31, and the box body 11 all have a unique insertion state, so as to ensure that the first probe assembly 21 can be quickly aligned with the probe perforation 311.

[0079] As shown in Figure 3 and Figure 7 , in an embodiment, the handle portion 32 is configured as a shield structure which covers the outside of the second probe assembly 22.

[0080] The shield structure can be combined with part of the box cover 12 to form a shield cavity for accommodating the second probe assembly 22; or, the shield structure can be combined with part of the box cover 12 and part of the box body 11 to form a shield cavity for accommodating the second probe assembly 22; wherein the shield structure is configured with a water passing hole which communicates the shield cavity and the upper space 1101.

[0081] It can be understood that when the sewage tank is excessively used to tilt or accidentally dumped, water can enter the shield cavity through the water passing hole to contact the third probe 221 and the fourth probe 222, and at least part of the sundries in the upper space 1101 will be blocked outside the shield structure, so as to avoid the formation of a closed loop path of interference nature.

[0082] Specifically, referring to Figure 9 , the shield structure can be configured to be open only on the top side, and the top side is engaged and buckled on the bottom of the box cover 12; the water passing hole is opened on the non-open part of the shield structure. For example, the back side 322, the front side 323, the bottom side, and the two side sides 321 of the shield structure are all provided with a surrounding plate, and the water passing hole is opened on at least one of the back side surrounding plate, the front side surrounding plate, the bottom side surrounding plate, and the two side side surrounding plates. In a specific embodiment, Figure 9 , the water passing hole is opened on the front side surrounding plate, the bottom side surrounding plate, and the two side side surrounding plates.

[0083] Referring to Figure 5 and 7For example, the shroud structure can be configured to be open only on the top side and the front side, the bottom of the box cover 12 is configured with a downwardly extending baffle 122, the top side of the shroud structure is engaged and fastened to the bottom of the box cover 12, the front side of the shroud structure is engaged and fastened to the baffle 122, and the water passage is formed in the non-opened part of the shroud structure. For example, the rear side 322, the bottom side, and the two side sides 321 of the shroud structure are provided with a surrounding plate, and the water passage is formed in at least one of the rear side surrounding plate, the bottom side surrounding plate, and the two side sides surrounding plate.

[0084] Of course, the shroud structure can also be configured to be open only on the top side and the rear side (the top side of the shroud structure is engaged and fastened to the bottom of the box cover 12, and the rear side of the shroud structure is engaged and fastened to the inner wall of the box body 11), or configured to be open on the top side, the front side, and the rear side (the top side of the shroud structure is engaged and fastened to the bottom of the box cover 12, the front side of the shroud structure is engaged and fastened to the baffle 122, and the rear side of the shroud structure is engaged and fastened to the inner wall of the box body 11).

[0085] For the user to easily take the handle part 32 from the cavity, the upper end width L of the handle part 32 is greater than the lower end width of the handle part 32, and the handle part 32 is configured as a shroud structure. Figure 10 In view of this, when the handle part 32 is configured as a shroud structure, it is also beneficial to effectively isolate the second probe assembly 22 from the conductive impurities. Specifically, the projection of the handle part 32 in the front-rear direction can include at least a substantially trapezoidal, semicircular, or triangular portion.

[0086] Continuing to refer to Figure 10 The shroud structure is detachably combined with the water filtering basket 31 as a whole, which is not only beneficial to manufacturing and production, but also to later maintenance or cleaning. Specifically, the shroud structure is configured with an embedding groove 320, and the water filtering basket 31 is configured with an embedding block 313 that can cooperate with the embedding groove 320; the embedding block 313 is provided with a clamping block 3131, and the clamping block 3131 can be clamped in the embedding groove 320 to reinforce the connection between the shroud structure and the water filtering basket 31. In addition, the embedding groove 320 is arranged on the water filtering basket 31, and the embedding block 313 is arranged on the shroud structure, which also has the above-mentioned effect, and the present application will not be repeated.

[0087] In a specific application scenario, when the first probe 211 and the second probe 212 are arranged in the lower space 1102, the first probe 211 and the second probe 212 can be isolated by the water filtering basket 31, thereby avoiding the interference of the closed loop path. However, if there is too much garbage mixed in the water, the garbage may completely block the water filtering basket 31, so that the subsequent water entering the upper space 1101 cannot pass through the water filtering basket 31 and fall into the lower space 1102; in this case, even if the upper space is full of water and garbage, the first probe 211 and the second probe 212 still cannot contact the water, and cannot accurately identify the water level.

[0088] The following embodiments are used to solve the above technical problems, referring to Figure 11The first probe 211 and the second probe 212 are arranged in the upper space 1101, and the outer side of the first probe 211 and / or the second probe 212 is provided with a protective shell 4. The protective shell 4 is provided with a water inlet 40, and water can flow through the water inlet 40 to contact the first probe 211 and / or the second probe 212. Based on the above arrangement, the conductive impurities need to pass through the water inlet 40 to contact the probe part, that is, the protective shell 4 can block the conductive impurities, not only avoiding the interference of the closed loop path, but also even if the water filter basket 31 is blocked, the water can still contact the first probe 211 and the second probe 212 as the water level rises.

[0089] The protective shell 4 is arranged on the outer side of the first probe 211, for example. Figure 12 As an embodiment of the present application, the water inlet 40 includes a bottom water inlet 41 arranged at the bottom of the protective shell 4. In this way, as the water level rises, water can contact the first probe 211 from the bottom, and can have a better blocking effect on the side of the first probe 211.

[0090] Referring to Figure 13 Further, the protective shell 4 is formed with a space for accommodating the first probe 211, and the first probe 211 is arranged in the protective shell 4. That is, the length of the space is not less than the length of the first probe 211, which can further reduce the risk of the first probe 211 contacting the conductive impurities. Preferably, the distance h between the lower end of the first probe 211 and the lower end of the protective shell 4 is greater than or equal to 3 mm. In this way, even if the conductive impurities touch the lower end of the protective shell, there is still a certain distance from the first probe 211.

[0091] Further, the first probe 211 has a length g, which is not less than 8 mm. It can be understood that the bottom area of the first probe 211 is limited, and it is easy to stick to the attached matter in sewage. If only the bottom surface of the first probe 211 contacts the water, it is easy to cause detection error. Therefore, the above-mentioned limitation that the length of the first probe is not less than 8 mm is that the length of the first probe that can contact the water is not less than 8 mm, so as to ensure the accuracy of the water level detection. Based on the above arrangement, there must be a gap between the first probe 211 and the protective shell 4 for water to flow through. When the above gap is small, it is easy to be blocked by foreign matter, which is not convenient for the user to clean. Therefore, the present application limits the minimum distance k (refer to Figure 14 ) between the outer surface of the first probe 211 and the inner surface of the protective shell 4 to be not less than 2 mm.

[0092] Continuing to refer to Figure 12 and Figure 13As another embodiment of the present application, the water inlet 40 comprises a side water inlet 42 arranged at the side of the sheath 4; in this way, as the water level rises, the water can contact the first probe 211 from the side and can better block the bottom of the first probe 211. Preferably, the width i of the side water inlet 42 is greater than or equal to 3 mm; based on this, the contact area of the first probe 211 with the water can be ensured, the detection sensitivity can be improved, and the inner surface of the sheath 4 and / or the outer surface of the first probe 211 can be easily cleaned.

[0093] Since the side water inlet 42 is arranged at the side of the sheath 4, the length of the first probe in contact with the water can be directly ensured to be greater than or equal to 8 mm, so that the gap between the first probe 211 and the sheath 4 can be retained or cancelled. That is, the outer surface of the first probe 211 can be arranged in close contact with the inner surface of the sheath 4, which avoids the insertion of foreign matter in the gap and saves part of the position to be cleaned. It should be noted that the close contact described above can be understood as a basic close contact, that is, there can be no gap between the outer surface of the first probe 211 and the inner surface of the sheath 4, or the gap can be very small and not easy to insert foreign matter, for example, a gap of a few tenths of a millimeter.

[0094] In other embodiments, the water inlet 40 can also simultaneously comprise the bottom water inlet 41 and the side water inlet 42; wherein the bottom water inlet 41 and the side water inlet 42 can inherit the limitations in the foregoing embodiments to obtain better detection sensitivity, accuracy and blocking effect.

[0095] Referring to Figure 13 As an embodiment of the present application, the distance between the first probe 211 and the second probe 212 is limited to be greater than or equal to 30 mm; it can be understood that the first probe and the second probe each have a central axis, and the two central axes have a distance f, and the distance f is greater than or equal to 30 mm. Based on the constraint of the distance between the two probes, it is limited that the conductive body needs to be greater than or equal to 30 mm to simultaneously contact the two probes, which further avoids the interference of the closed loop path. However, when the distance between the two probes is too large, undesirable phenomena may occur, for example: when the water simultaneously contacts the first probe and the second probe, if the distance f is too large, the water resistance for conducting current will be too large, which may cause the risk of weak or even interrupted current path; therefore, the present application further limits the distance between the first probe 211 and the second probe 212 to be less than or equal to 150 mm.

[0096] In an embodiment of the present application, the shell 4 is connected to the bottom of the insulating layer 23. The first probe 211 is a detection member capable of directly contacting with water, while the first probe body 213 is an electrically conductive member which does not need to contact with water. If the first probe body 213 is exposed, there is a risk that conductive impurities will interfere with the detection accuracy. Therefore, by at least partially isolating the first probe body 213 from the root, even if the conductive impurities adhere to the insulating layer, the first probe body 213 will not be electrically connected.

[0097] Further, the height of the insulating layer is 50 mm or more, that is, from the connection between the first probe 211 and the first probe body 213 upward, the wrapping height j of the insulating layer to the first probe body 213 is at least 50 mm. In this way, the electrically conductive impurities can be effectively prevented from being electrically connected to the first probe body. In a preferred embodiment, the length of the first probe body 213 is greater than 50 mm, and the insulating layer completely wraps the first probe body 213 in the circumferential direction.

[0098] As an embodiment of the present application, the first probe body 213 is preferably wrapped by injection molding, and the insulating layer 23 and the shell 4 are integrally injection molded. In this way, the production process can be optimized under the premise of ensuring the structural performance, and the first probe can be effectively supported and fixed by the injection molded body.

[0099] Referring to Figure 5 or Figure 11 , the outer surface of the shell 4 is substantially in the shape of an inverted cone. In this way, the water on the outer side of the shell can be accelerated to drop, thereby reducing the impact on water level detection. When the insulating layer 23 and the shell 4 are integrally injection molded, the water on the outer side of the insulating layer 23 can also be affected and accelerated to drop. To enhance the dropping effect, at least part of the outer surface of the insulating layer 23 is also substantially in the shape of an inverted cone. Preferably, at least part of the outer surface of the insulating layer 23 and the outer surface of the shell 4 are arranged in the same conical surface.

[0100] As can be seen from the foregoing, when the shell 4 is arranged on the first probe 211 and the insulating layer is arranged on the first probe body 213, whether the second probe is completely exposed or adopts the same structure as the first probe, the effect of blocking the conductive impurities can be effectively achieved. However, to enhance this beneficial effect and considering the aesthetics of the sewage tank, the second probe preferably adopts the same structure as the first probe, that is, the shell 4 is arranged on the outer side of the second probe 212, and at least part of the insulating layer is arranged on the second probe body 214.

[0101] Referring to Figure 11 As a specific embodiment of the present application, the insulating layer 23 and the shell 4 are integrally injection molded and fixedly connected to the tank cover 12, and the second probe and the first probe adopt the same structure. As known by those skilled in the art, when the insulating layer of the first probe body 213 and the insulating layer of the second probe body 214 contact the same bridge (for example, the tank cover 12), the second probe body 214 will be electrically connected to the first probe body 213 through the tank cover 12. In this way, the second probe body 214 will be electrically connected to the first probe body 213 through the tank cover 12. Figure 5When the baffle 122 is wet, even if the insulating layer and / or the bridge are not conductive, if water is attached to the outer surface of the insulating layer and the bridge, the current can also conduct on the outer surface of the insulating layer and the bridge, which is called the creepage phenomenon.

[0102] Based on the principle that the longer the conductor length is, the greater the resistance is, the minimum creepage distance m between the first probe 211 and the second probe 212 is limited to be greater than or equal to 80 mm; in this way, the creepage current between the first probe 211 and the second probe 212 can be weakened, thereby reducing the influence on the water level detection accuracy.

[0103] Referring to Figure 3 and Figure 4 In an embodiment, the sewage tank outlet 120 is arranged on the tank cover 12, and has an outlet air inlet end 121 which is arranged at the bottom of the tank cover 12; the fluid channel 111 is arranged substantially along the height direction of the sewage tank, that is, the sewage tank inlet 1111 is arranged at the bottom of the tank body 11; further, the filter basket 31 is provided with a channel perforation 310, and the fluid channel 111 penetrates the filter basket 31 from bottom to top through the channel perforation 310, so that the cavity inlet 1112 is arranged in the upper space 1101.

[0104] In an embodiment, the inner wall of the tank body 11 is provided with a first support platform 131, and / or the outer wall of the fluid channel 111 is provided with a second support platform 132; after the filter basket 31 is loaded from the top opening 1103, the filter basket 31 can be limited to move downward under the action of the first support platform 131 and / or the second support platform 132, thereby accurately separating the upper space 1101 and the lower space 1102.

[0105] Further, in the state that the sewage tank is assembled, the shroud structure combined with the filter basket 31 abuts against the bottom of the tank cover 12 to limit the upward movement of the filter basket 31; that is, when the filter basket 31 and the tank cover 12 are both mounted on the tank body 11, the shroud 32 covers the second probe assembly 22; in combination with the downward limiting in the above embodiment, the filter basket 31 can be clamped in the cavity to avoid upward and downward movement during use, thereby reducing noise

[0106] In an embodiment, the sewage tank is mounted on the fuselage from back to front (refer to Figure 3 Based on the fact that one side of the second probe assembly is the back side of the cavity, the front side and the back side of the sewage tank can be determined, the top surface of the tank cover 12 is configured as a first combined surface (not shown in the figure) which is inclined downward from back to front; based on the inclined arrangement of the first combined surface, the first combined surface can be combined with the fuselage in an air-tight manner.

[0107] Referring to Figure 6 and Figure 15The sewage tank inlet 1111 is arranged at the bottom of the box body 11, and the bottom surface of the box body 11 is configured as a second joint surface 14 which is inclined upward from back to front, which is also conducive to the airtight joint of the sewage tank to the fuselage; wherein the sewage tank inlet 1111 is configured on the second joint surface 14.

[0108] Preferably, the lower part of the second joint surface 14 is provided with a placing seat 15, which can make the sewage tank stand upright on the ground without falling when the sewage tank is removed from the fuselage, facilitating subsequent cleaning of the garbage in the sewage tank; specifically, the plane where the bottom end of the placing seat 15 is located is substantially perpendicular to the height direction of the sewage tank.

[0109] Further, the placing seat 15 can be configured as a U-shaped structure, and the front end of the U-shaped structure is configured as an open end; based on this, the requirement of the sewage tank standing upright can be met, and the front side space of the sewage tank inlet 1111 can be avoided, so as to not affect the joint performance with the fuselage. Of course, the placing seat 15 can also be configured as other shapes, such as semicircular, two straight lines, etc., and can also be configured as a plurality of supporting rods or supporting plates extending downward from the second joint surface 14; which can meet the requirements of upright supporting the sewage tank and effectively avoiding the front side space of the sewage tank inlet 1111.

[0110] In order to facilitate design and manufacture, the placing seat 15 is preferably integrally formed with the box body 11.

[0111] In order to guarantee the light weight requirement of the sewage tank and the cleaning device, at least part of the placing seat 15 is preferably a hollow structure, that is, a structure such as hollowing out, slotting, and shell extraction which is commonly used in the art.

[0112] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. For those skilled in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the scope of the present application. It is not necessary or possible to exhaust all embodiments here. Any modification, equivalent substitution and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A sewage tank, characterized in that, include: The enclosure (11) and the cover (12) detachable from the top of the enclosure (11) are provided with a first probe assembly (21) and a second probe assembly (22) for detecting water level information inside the enclosure (11) below the cover (12), and the second probe assembly (22) is located above the first probe assembly (21). It also includes a water filter basket assembly (3) disposed in the housing (11), the water filter basket assembly (3) being able to isolate the first probe assembly (21) and / or the second probe assembly (22) from conductive debris in order to avoid the generation of a closed-loop path with interfering properties; The first probe assembly (21) includes a first probe (211) and a second probe (212). The outer side of the first probe (211) is provided with a protective shell (4). The protective shell (4) is provided with a water inlet (40) for blocking conductive debris, and water can flow through the water inlet (40). The water inlet (40) includes a bottom water inlet (41) located at the bottom of the protective shell (4) and a side water inlet (42) located on the side of the protective shell (4). The first probe (211) is entirely located inside the protective shell (4).

2. The sewage tank according to claim 1, characterized in that, The filter basket assembly (3) includes a filter basket (31) for filtering water, the filter basket (31) dividing the cavity of the housing (11) into an upper space (1101) and a lower space (1102); the filter basket (31) filters the water as it enters the lower space (1102) from the upper space (1101); The first probe assembly (21) is disposed in the lower space (1102).

3. The sewage tank according to claim 2, characterized in that, The filter basket (31) and the box (11) are provided with a mating guide structure, or the internal cross section of the box (11) is constructed as an irregular cross section, and the mating outer surface of the filter basket (31) is constructed as a conformal structure that matches the irregular cross section. The lid (12) and the box body (11) are provided with a mating guide structure, or the internal cross section of the box body (11) is constructed as an irregular cross section, and the mating outer surface of the lid (12) is constructed as a conformal structure that matches the irregular cross section of the box body (11).

4. The sewage tank according to claim 1, characterized in that, The filter basket assembly (3) includes a filter basket (31) for filtering water and a handle (32) connected to the top of the filter basket (31); the handle (32) is constructed as a protective cover structure, the protective cover structure is constructed with water passage holes, the protective cover structure can cover the outside of the second probe assembly (22) to prevent the second probe assembly (22) from contacting conductive debris.

5. The sewage tank according to claim 4, characterized in that, The protective structure can be combined with part of the box cover (12) to form a protective cavity for accommodating the second probe assembly (22), or The protective structure can be combined with part of the box cover (12) and part of the box body (11) to form a protective cavity for accommodating the second probe assembly (22).

6. The sewage tank according to claim 4, characterized in that, The upper width of the handle (32) is greater than its lower width.

7. The sewage tank according to claim 4, characterized in that, The handle (32) is detachably integrated with the filter basket (31) as a whole.

8. The sewage tank according to claim 4, characterized in that, The box (11) is provided with a fluid channel (111) arranged basically along its height direction. One end of the fluid channel (111) is formed as a sewage tank inlet (1111), and the other end is formed as a cavity inlet (1112). The inner wall of the housing (11) is provided with a first support platform (131) and / or the outer wall of the fluid channel (111) is provided with a second support platform (132). The first support platform (131) and the second support platform (132) are used to limit the downward movement of the filter basket (31) relative to the housing (11). When the filter basket (31) and the box cover (12) are both installed on the box body (11), the protective cover structure covers and fastens the second probe assembly (22).

9. The sewage tank according to claim 4, characterized in that, The filter basket (31) divides the cavity of the box (11) into an upper space (1101) and a lower space (1102); the filter basket (31) filters the water when the water enters the lower space (1102) from the upper space (1101); The first probe assembly (21) is disposed in the lower space (1102).

10. The sewage tank according to claim 1, characterized in that, The outer surface of the protective shell (4) is basically inverted conical.

11. The sewage tank according to claim 1, characterized in that, The length of the first probe (211) that can contact the water liquid is not less than 8 mm.

12. The sewage tank according to claim 1, characterized in that, The distance between the lower end of the first probe (211) and the lower end of the protective shell (4) is more than 3mm.

13. The sewage tank according to claim 1, characterized in that, The width of the side inlet (42) is set to be 3mm or more.

14. The sewage tank according to claim 1, characterized in that, The outer surface of the first probe (211) is fitted to the inner surface of the protective shell (4), or The minimum distance between the outer surface of the first probe (211) and the inner surface of the protective shell (4) is not less than 2 mm.

15. The sewage tank according to claim 1, characterized in that, The first probe (211) is electrically connected to a first probe body (213), and the second probe (212) is electrically connected to a second probe body (214); the first probe body (213) and the second probe body (214) are both connected to the bottom of the box cover (12), and the outer sides of the first probe body (213) and the second probe body (214) are provided with an insulating layer (23).

16. The sewage tank according to claim 15, characterized in that, The distance between the first probe (211) and the second probe (212) is 30mm-150mm; the creepage distance between the first probe (211) and the second probe (212) is more than 80mm.

17. The sewage tank according to claim 15, characterized in that, The height of the insulating layer is 50 mm or more.

18. The sewage tank according to claim 1, characterized in that, The box (11) is provided with a fluid channel (111) arranged substantially along its height direction, one end of the fluid channel (111) is formed as a sewage tank inlet (1111), and the sewage tank inlet (1111) is disposed at the bottom of the box (11); The sewage tank is installed on the machine body from back to front. The top surface of the tank cover (12) is constructed as a first joint surface that slopes downward from back to front, and the bottom surface of the tank body (11) is constructed as a second joint surface (14) that slopes upward from back to front.

19. The sewage tank according to claim 18, characterized in that, The lower part of the second mating surface (14) is provided with a placement seat (15), and the plane at the bottom of the placement seat (15) is basically perpendicular to the height direction of the sewage tank.

20. The sewage tank according to claim 19, characterized in that, The placement seat (15) is constructed in a U-shape, with the front end of the U-shape configured as its open end.

Images