Sewage tank and cleaning device

Abstract

The present application relates to a kind of sewage tank and cleaning device, the sewage tank includes: tank, which is provided with sewage collection space;Filter piece, detachably arranged in the sewage collection space;First conductive group, arranged on the filter piece, including two first conductive bodies spaced apart Two first conductive bodies can be electrically connected with the first conductive component on the fuselage when the sewage tank is connected with the fuselage;And first resistor, electrically connected between two first conductive bodies.When the tank and filter piece are not assembled on the machine body of cleaning device, the voltage value detected by the main control board is different from when the tank and filter piece are assembled on the machine body, to determine whether the filter piece is missing, and a signal is sent to the user when the filter piece is missing, so as to avoid the missing of the tank and filter piece.

Description

TECHNICAL FIELD

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

[0002] With the development of economy and the progress of society, people's demand for the quality of life is getting higher and higher, and various cleaning devices are applied to people's life. Common cleaning devices include vacuum cleaners, robot sweepers and scrubbers. Among them, the scrubber is widely used because of its washing and mopping functions.

[0003] The scrubber includes a water tank, a water spraying system, a sewage tank and a recovery system. The water spraying system is in communication with the water tank, and the recovery system is in communication with the sewage tank. When the scrubber is working, the water spraying system sprays water, and the recovery system sucks the sewage into the sewage tank for collection. The sewage tank includes a tank body and a filter element. The filter element is arranged in the tank body and is used to filter solid waste contained in the sewage, so as to separate the solid waste and the sewage, facilitate the separate pouring of the solid waste and the sewage, and avoid the clogging of the sewage tank and the discharge device such as a toilet or a sink.

[0004] However, when the solid waste and the sewage are poured separately, the sewage tank needs to be taken off the machine body, and the filter element needs to be taken out of the tank body of the sewage tank for cleaning. However, when the scrubber is used again, the user needs to reassemble the sewage tank on the machine body, and there is often a situation of missing the filter element, which causes the solid waste and the sewage to mix without being filtered during use, so that the dry and wet waste cannot be separated, and the user experience is poor when cleaning the sewage tank. In one case, the filter element is provided with an anti-backflow structure, and if the filter element is forgotten, the anti-backflow function of the sewage tank cannot be realized. SUMMARY

[0005] Therefore, it is necessary to provide a sewage tank and a cleaning device capable of preventing the missing of the filter element in view of the problem of missing the filter element in the prior art.

[0006] A sewage tank applied to a cleaning device, the cleaning device including a machine body and a floor brush assembly arranged on the machine body, the sewage tank including:

[0007] a tank body including a main body and a cover body, the cover body and the main body constituting a sewage collection space in communication with the floor brush assembly

[0008] a filter element arranged in the sewage collection space in a detachable manner;

[0009] a first conductive group arranged on the filter element and including two first conductive bodies arranged at intervals, the two first conductive bodies being electrically connected with a first conductive part on the machine body when the sewage tank is connected with the machine body; and

[0010] a first resistor electrically connected between the two first conductive bodies.

[0011] In one of the embodiments, the filter member comprises a filter plate separating the dirt collecting space into a first space and a second space, the first space being in communication with an external space and the second space.

[0012] The two first conductive bodies extend axially into the second space, and at least a portion of each of the first conductive bodies is exposed in the second space.

[0013] In one of the embodiments, the sewage tank further comprises a first waterproof sleeve connected with the filter member and sleeved on the two first conductive bodies and covering the first resistor.

[0014] In one of the embodiments, the filter member comprises a filter plate separating the dirt collecting space into a first space and a second space, the first space being in communication with an external space and the second space; each of the first conductive bodies is threaded through the filter plate.

[0015] The first waterproof sleeve comprises a first waterproof portion and a second waterproof portion, the first waterproof portion being arranged in the first space and connected with the filter plate, and the second waterproof portion being arranged in the second space and connected with the filter plate.

[0016] Each of the first conductive bodies comprises a first portion and a second portion connected with each other, the first portion being arranged in the first space, and the second portion being arranged in the second space, the first waterproof portion being sleeved on the two first portions, the second waterproof portion being sleeved on the two second portions, and the first waterproof portion and / or the second waterproof portion covering the first resistor.

[0017] In one of the embodiments, the first waterproof portion is integrally formed with the filter plate; and / or the second waterproof portion is welded with the filter plate.

[0018] In one of the embodiments, the first waterproof portion has a receiving groove, the filter plate is provided with a receiving opening in communication with the receiving groove, a portion of the second waterproof portion is received in the receiving groove through the receiving opening, the second waterproof portion and a groove wall of the receiving groove define a receiving space, and the first resistor is received in the receiving space.

[0019] In one of the embodiments, the sewage tank further comprises a first conductive sheet and a second conductive sheet, one end of the first resistor is electrically connected with one of the first conductive bodies through the first conductive sheet, and the other end of the first resistor is electrically connected with the other of the first conductive bodies through the second conductive sheet.

[0020] In one of the embodiments, the sewage tank further comprises a second electrically-conductive set arranged on the tank body, the second electrically-conductive set comprising two second electrically-conductive bodies arranged at intervals and capable of being electrically connected with the first electrically-conductive parts;

[0021] The two first electrically-conductive bodies are capable of being in contact with the two second electrically-conductive bodies respectively in the axial direction, and one of the first electrically-conductive bodies is electrically connected with the first electrically-conductive parts through one of the second electrically-conductive bodies.

[0022] In one of the embodiments, the cover body is detachably arranged on the opening of the main body.

[0023] The second electrically-conductive set is arranged on the cover body.

[0024] In one of the embodiments, at least part of each of the first electrically-conductive bodies is movably connected with the filter member, and / or at least part of each of the second electrically-conductive bodies is movably connected with the tank body.

[0025] The sewage tank further comprises elastic members arranged on the tank body and / or the filter member, each of the elastic members being capable of exerting an elastic force to facilitate the close contact between each of the first electrically-conductive bodies and the corresponding second electrically-conductive body.

[0026] In one of the embodiments, at least part of the second electrically-conductive bodies is movably connected with the tank body, the elastic members are arranged on the tank body, and the first electrically-conductive bodies are fixedly connected with the filter member.

[0027] In one of the embodiments, the outer circumferential surface of the second electrically-conductive body is convexly provided with an outer convex portion, one end of the elastic member is in abutment with the cover body, and the other end is in abutment with the outer convex portion; the sewage tank comprises a second waterproof sleeve connected with the tank body and sleeved on the two second electrically-conductive bodies.

[0028] When the first electrically-conductive bodies are not in contact with the second electrically-conductive bodies, the outer convex portion is in abutment with the stepped portion of the second waterproof sleeve, and the elastic member is elastically deformed under the compression of the stepped portion; when the first electrically-conductive bodies are in contact with the second electrically-conductive bodies, the first electrically-conductive bodies exert a force on the second electrically-conductive bodies, the second electrically-conductive bodies compress the elastic members, and the elastic members generate an elastic restoring force to facilitate the close contact between the first electrically-conductive bodies and the second electrically-conductive bodies.

[0029] In one of the embodiments, when the first electrically-conductive bodies are not in contact with the second electrically-conductive bodies, the second electrically-conductive bodies protrude axially out of the second waterproof sleeve under the elastic restoring force of the elastic members.

[0030] In one of the embodiments, the second conductive body is fixedly connected with the box body, and the elastic member is arranged on the filter element; and the first conductive body is movably connected with the filter element at one end close to the second conductive body.

[0031] In one of the embodiments, the elastic member is a spring, and the spring is sleeved on at least part of the first conductive body and / or at least part of the second conductive body.

[0032] In one of the embodiments, the sewage tank further comprises a second waterproof sleeve connected with the box body and sleeved on the two second conductive bodies.

[0033] In one of the embodiments, the sewage tank further comprises a second conductive group arranged on the box body, and the second conductive group comprises two second conductive bodies arranged at intervals and capable of being electrically connected with the second conductive components on the fuselage when the sewage tank is connected with the fuselage.

[0034] The sewage tank further comprises a second resistor electrically connected between the two second conductive bodies.

[0035] In one of the embodiments, the filter element comprises a filter plate, and the filter plate divides the sewage storage space into a first space and a second space, and the first space is in communication with the second space and an external space.

[0036] The sewage tank further comprises an anti-backflow structure connected with the filter plate, and sewage from the external space into the first space can at least pass through the anti-backflow structure to enter the second space for storage, and the anti-backflow structure can prevent sewage in the second space from flowing therethrough to enter the first space.

[0037] A cleaning device comprising a fuselage and a sewage tank as described in any one of the above embodiments, and the sewage tank is detachably assembled on the fuselage; the cleaning device further comprises a main control board electrically connected with the first conductive components on the fuselage, and the main control board is used to determine whether the filter element is installed in the sewage tank according to the voltage threshold interval to which the first voltage value belongs, and the first voltage value is the voltage value between the first conductive components.

[0038] In one of the embodiments, the sewage tank further comprises a second conductive group arranged on the box body, and the second conductive group comprises two second conductive bodies arranged at intervals and capable of being electrically connected with the second conductive components on the fuselage when the sewage tank is connected with the fuselage.

[0039] The sewage tank further comprises a second resistor electrically connected between the two second conductive bodies.

[0040] The main control board is further configured to determine whether the sewage tank is installed on the machine body according to a voltage threshold interval to which the second voltage value belongs, the second voltage value being a voltage value between the second conductive component.

[0041] In one of the embodiments, the main control board is further configured to determine whether the sewage tank is full according to a voltage threshold interval to which the first voltage value belongs.

[0042] The sewage tank and the cleaning device, since the filter is provided with the first conductive group, the first resistor is electrically connected between the two first conductive bodies of the first conductive group. The main control board can detect the voltage difference (i.e. the first voltage value) between the first conductor component (terminal or pin) connected with the first conductive body as the positive electrode and the first conductor component (terminal or pin) connected with the first conductive body as the negative electrode. When the tank body and the filter are not assembled on the machine body of the cleaning device, the first voltage value detected by the main control board is different from that when the tank body and the filter are assembled on the machine body, so as to determine whether the filter is missing. When the filter is missing, a signal is sent to the user, so as to avoid the missing of the tank body and the filter. BRIEF DESCRIPTION OF DRAWINGS

[0043] Figure 1 An axonometric view of the sewage tank according to an embodiment of the present application;

[0044] Figure 2 A structure view of the cleaning device provided with the sewage tank shown in FIG. 1; Figure 1

[0045] Figure 3 A sectional view of the sewage tank shown in FIG. 1; Figure 1

[0046] A sectional view of the sewage tank shown in FIG. 1; Figure 4 Figure 1 A circuit principle view for detecting whether the tank body and the filter of the sewage tank shown in FIG. 1 are missing;

[0047] Figure 5 Figure 1 A structure view of the main control board shown in FIG. 1;

[0048] Figure 6 A structure view of the main control board shown in FIG. 1; Figure 1

[0049] Figure 7 A sectional view of the sewage tank shown in FIG. 1; Figure 1

[0050] A sectional view of the sewage tank shown in FIG. 1; Figure 8 Figure 1 A sectional view of the sewage tank shown in FIG. 1;

[0051] Figure 9 ​​​​​for Figure 8 A structural diagram of the structure shown from another perspective;

[0052] Figure 10 for Figure 1 Another partial structural diagram of the sewage tank shown;

[0053] Figure 11 for Figure 1 The image shows another cross-sectional view of the sewage tank.

[0054] Figure 12 for Figure 1 A cross-sectional view of the sewage tank shown in the image when the first conductor is not connected to the second conductor;

[0055] Figure 13 for Figure 1 The diagram shows a cross-sectional view of the sewage tank when the first conductor and the second conductor are connected.

[0056] Explanation of reference numerals in the attached figures:

[0057] 100. Sewage tank; 10. Tank body; 11. Sewage channel; 12. Sewage collection space; 121. First space; 122. Second space; 13. Main body; 131. Bottom wall; 132. Sewage pipe; 133. Side wall; 14. Cover; 141. Airflow channel; 142. Inlet; 20. Filter element; 21. Filter plate; 211. First hole group; 212. Second hole group; 213. Receiving port; 22. Baffle wall; 23. Socket pipe; 30. First conductive group; 31. First conductor; 40. First 50. Resistor; 61. Filter screen; 61. Anti-backflow valve; 611. Connector; 612. Flat valve body; 613. Flat surface; 70. First waterproof sleeve; 71. First waterproof part; 711. Receiving groove; 72. Second waterproof part; 73. Receiving space; 80. First conductive sheet; 90. Second conductive sheet; 110. Second conductive group; 111. Second conductor; 112. Outward protrusion; 120. Second waterproof sleeve; 123. Stepped part; 130. Baffle structure; 1301. Baffle port; 140. Elastic element. Detailed Implementation

[0058] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0059] In the description of the application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the device or element 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 application.

[0060] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0061] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. 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.

[0062] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0063] It is to be understood that when an element such as a layer, region or substrate is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element or intervening elements can be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements present. It will be understood that, although the terms "first", "second", etc. can be used herein to describe various elements, these elements should not be limited by these terms since such elements are commonly known to have temporal meanings as well. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be understood that the terms "comprises" and / or "comprising", or "includes" and / or "including" when used herein, specify the presence of stated features, integers, steps, operations, elements, or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof.

[0064] Referring to Figure 1 and Figure 2 , an embodiment of the present application provides a sewage tank 100 for a cleaning device 200, specifically, the cleaning device 200 is a scrubber. It should be understood that in other embodiments, the type of the cleaning device 200 is not limited.

[0065] The cleaning device 200 comprises a machine body 300 having a first end and a second end arranged oppositely, the first end of the machine body 300 is provided with a brush assembly, and the second end of the machine body 300 is provided with a handle. When the cleaning device 200 is used, a user holds the handle to push the cleaning device 200 to move, and at the same time, a roller brush in the brush assembly rolls around an axis to bring the garbage on the ground into the cleaning device 200 and collect it, so as to realize the cleaning of the ground.

[0066] Specifically, the cleaning device 200 further comprises a main control board arranged on the machine body 300, a clean water tank 400, the sewage tank 100 and a recovery system, the cleaning device 200 further comprises a water spraying system arranged on the brush assembly, the water spraying system is communicated with the clean water tank 400, the recovery system is communicated with the sewage tank 100, and the brush assembly, the water spraying system and the recovery system are electrically connected with the main control board. When the cleaning device 200 works, the main control board controls the water spraying system to spray water to the ground and / or the roller brush, the roller brush rolls to wash and mop the ground, and the recovery system sucks the sewage formed after washing and mopping into the sewage tank 100 for collection, so as to realize the cleaning of the ground. Of course, in another embodiment of the present application, the above-mentioned clean water tank 400 can also be arranged on the brush assembly.

[0067] Referring to Figure 3 , the sewage tank 100 comprises a tank body 10, the tank body 10 is provided with a sewage collecting space 12, the sewage collecting space 12 is communicated with the brush assembly, and under the action of the recovery system, the sewage formed after washing and mopping of the brush assembly flows to the sewage collecting space 12 to be collected.

[0068] In an embodiment, the box 10 is further provided with a sewage passage 11, which is in communication with the floor brush assembly and the sewage collecting space 12. Under the action of the recovery system, the sewage formed after the floor brush assembly is used to mop is flowed from the sewage passage 11 to the sewage collecting space 12 to be collected. It should be understood that in other embodiments, the box 10 can also not be provided with the sewage passage 11, and the sewage formed after the floor brush assembly is used to mop is flowed from the sewage inlet on the side wall of the sewage collecting space 12 to the sewage collecting space 12 to be collected.

[0069] The sewage tank 100 further comprises a filter 20 detachably arranged in the sewage collecting space 12. The filter 20 can filter the solid garbage contained in the sewage, so as to realize the separation of the sewage and the solid garbage. When the garbage is dumped, the filter 20 is taken out of the box 10, the solid garbage can be separately dumped into the garbage basket, and the sewage in the box 10 is dumped into the discharge device such as a toilet or a sink, so as to effectively prevent the discharge device such as the toilet or the sink from being blocked.

[0070] In an embodiment, referring to Figure 4 The sewage tank 100 further comprises a first conductive group 30 arranged on the filter 20, which comprises two first conductive bodies 31 arranged at intervals. Specifically, the sewage tank 100 further comprises a first resistor 40 electrically connected between the two first conductive bodies 31. Of course, the first conductive group 30 can also comprise three or more first conductive bodies 31 arranged at intervals, at least two first conductive bodies 31 comprising at least one first conductive body 31 with a positive pole and at least one first conductive body 31 with a negative pole, and at least one first conductive body 31 with a positive pole and one first conductive body 31 with a negative pole are electrically connected at one end of all the first conductive bodies 31 with the same polarity, and the other end is suspended, at least one first conductive body 31 with a positive pole and one first conductive body 31 with a negative pole are electrically connected to the above-mentioned first resistor 40.

[0071] The first resistor 40 can be an element made of a conductive material. Preferably, the first resistor 40 is a resistor with a resistance value.

[0072] Specifically, the first conductive components are provided on the body 300, and the two first conductive bodies 31 can be electrically connected with the first conductive components on the body 300 when the sewage tank 100 is connected with the body 300. The main control board can detect the voltage difference (i.e., the first voltage value) between the first conductive component (terminal or pin) connected with the first conductive body 31 as the positive electrode and the first conductive component (terminal or pin) connected with the first conductive body 31 as the negative electrode. In a specific embodiment, the first conductive body 31 as the negative electrode is grounded, and the main control board determines whether the filter 20 is missing by detecting the first voltage value of the first conductive component (the first voltage value is the voltage value between the two ends of the first conductive component) connected with the first conductive body 31 as the positive electrode, and thus sends a corresponding signal. That is, the main control board can determine whether the filter 20 is installed in the tank body 10 of the sewage tank 100 according to the voltage threshold interval of the first voltage value. The working principle of the cleaning device will be described in detail below. Figure 5

[0073] Figure 5 The above is the circuit schematic diagram of the cleaning device. The working principle of the cleaning device will be described in detail below. Figure 5 As shown in the figure, Figure 5 Figure 5 The middle chip U1 and the power filter capacitor C1 constitute a processing module in the main control board. Figure 5 The equivalent circuit formed by the resistors R3, R5, R7, R8, R9, the triode Q1, the capacitor C2, and the first conductive component Electrode In forms a water level electrode voltage detection circuit module. In Figure 5 The resistors R1, R2, R4, and R6 connected with the pins of the chip U1 having a serial port function are also included in the cleaning device, so that the U1 can output the water level state information of the water tank to other chips or modules.

[0074] Specifically, after the cleaning device is turned on, the chip U1 controls the triode Q1 to be turned on through the resistors R5 and R3. When Q1 is turned on, a loop is formed by VDD→Q1→R7→R9→GND.

[0075] When the sewage tank 100 is installed on the body 300, the two pins of the first conductive component Electrode In are connected in parallel across the two ends of R9. The first conductive component Electrode In also has a certain resistance value, which is formed by the conductive body, the first resistor 40, and the sewage in the sewage tank 100. If this resistance value is Re, then for the above-mentioned circuit, a new loop is added: VDD→Q1→R7→Re→GND. At this time, the total loop is equivalent to VDD→Q1→R7→R9 / / Re (R9 is connected in parallel with Re)→GND.

[0076] ​​Since the resistance value of Re equivalent resistance varies according to the state of the sewage tank 100 and the filter 20, and Figure 5 The specific parameter values of other electronic components are fixed, such as the voltage value of VDD, the resistance values of each resistance R1 to R9, the capacitance values of capacitors C1 and C2, and the voltage drop of the transistor Q1. Therefore, as long as the voltage value of Re to GND is obtained, the corresponding equivalent state of Re can be calculated.

[0077] In addition, since R8 and C2 are a low-pass filter circuit, the voltage value at both ends can be transmitted to the voltage detection module of the chip U1 after R9 is connected in parallel with Re. Then the processing module can perform a series of calculations and determinations according to this voltage, so as to determine whether the sewage tank 100 is missing or the filter 20 is missing, and obtain the actual state of the water level in the sewage tank 100.

[0078] Based on this, in combination with the above hardware circuit and principle analysis, the processing module can determine whether the sewage tank 100 is missing or the filter 20 is missing and the water level state of the sewage tank 100 by controlling the water level electrode voltage detection module, driving Q1 to open, and then reading the voltage value at both ends of the first conductive part Electrode In through R8 and C2.

[0079] Further, in order to facilitate the description, the voltage value of VDD is set to 3.3V and the voltage drop of Q1 is set to 0.1V in this embodiment.

[0080] Thus, it is convenient to describe the process of the processing module judging various states based on the voltage value of the detected water level electrode voltage detection circuit module.

[0081] Specifically, based on the above-described principles, it can be known that the voltage value read by the chip U1 through R8 and C2 is different in different states. Different voltage values correspond to different states of the sewage tank 100. According to Figure 5 As shown in the circuit principle diagram, the voltage value read by U1 can be represented by the following formula (1):

[0082]

[0083] Since all other parameters except Re are known, each state of Re corresponds to a state of the voltage value U. The specific analysis is as follows:

[0084] 1) When the sewage tank 100 (including the tank body 10 and the filter 20) is not installed or the sewage tank 100 is not installed in place, or only the tank body 10 is installed without the filter 20,

[0085] At this time, the first conductive component Electrode In is equivalent to an open circuit, and the equivalent resistance Re between the two electrode interfaces is equivalent to infinity. Thus, the above formula (1) can be simplified as:

[0086]

[0087] At this time, the voltage U read by U1 is D1.

[0088] 2) When the sewage tank 100 (including the tank body 10 and the filter 20) is installed in place, but there is little sewage in the sewage tank 100,

[0089] At this time, the two electrode interfaces of the first conductive component Electrode In are connected to the two conductive bodies of the sewage tank 100. Since there is little sewage in the sewage tank 100 at this time, no matter how the sewage tank 100 is shaken, the sewage will not reach the conductive body at the fullness warning line. Therefore, the equivalent resistance Re between the two electrode interfaces of the first conductive component is composed of the two conductive bodies and the first resistor 40. Since the materials used by the conductive bodies and the first resistor 40 are fixed in actual application, the resistance value of the equivalent resistance Re composed of the conductive bodies and the first resistor 40 is also relatively fixed. Based on the above parameters, the equivalent resistance Re composed of the conductive bodies and the first resistor 40 is about 300K through calculation in the embodiment, and the voltage U read by U1 is D2 by substituting other parameters into the calculation. D2 is less than D1.

[0090] 3) When the sewage tank 100 is installed in place, and the sewage tank 100 is full of sewage

[0091] At this time, the two electrode interfaces of the first conductive component Electrode In are connected to the two conductive bodies of the sewage tank 100. Since the sewage tank 100 is full of sewage, i.e., exceeds the warning line, the equivalent resistance Re between the two electrode interfaces of the first conductive component is composed of the conductive bodies, the first resistor 40, and the sewage resistance. The resistance of the sewage is usually about 40K, which is equivalent to the value of the equivalent resistance Re at this time, which is about 35K.

[0092] By substituting the actual parameters, it can be calculated that the voltage U read by U1 at this time is D3, and D5 is less than D2.

[0093] In summary, the voltage values detected by the water level electrode voltage detection circuit module are different in different states. Based on the circuit principle and related parameters, Figure 5 the following conclusions can be obtained:

[0094] When the sewage tank 100 (including the tank body 10 and the filter 20) is not installed or is not installed in place, or only the tank body 10 is installed without the filter 20, U=D1;

[0095] When the sewage tank 100 is installed and the sewage is less, U=D2;

[0096] When the sewage tank 100 is installed and the sewage is full, exceeding the water level warning line, U=D3.

[0097] Therefore, the processing module can distinguish the above states by judging the detected voltage. For example, the intermediate value of several states can be taken as the threshold value of judgment:

[0098] When U≥3V, it is considered that the sewage tank 100 (including the tank body 10 and the filter 20) is not installed or the sewage tank 100 is not installed in place or only the tank body 10 is installed without the filter 20;

[0099] When 3V>U>1.4V, it is considered that the sewage tank 100 is installed and the sewage tank 100 is not full, i.e. the sewage in the sewage tank 100 is less;

[0100] When U≤1.4V, it is considered that the sewage tank 100 is installed and the sewage tank 100 is full, i.e. the water level in the sewage tank 100 exceeds the water level warning line.

[0101] In the above description, the above threshold values are defined as the first threshold value (Umin) 1.4V and the second threshold value (Umax) 3V from small to large.

[0102] It can be understood that, if Figure 5 If the parameters of the components in the above formula are different from the above definitions, the size of the corresponding threshold value can be recalculated and determined according to the actual size of the components, and the specific calculation principle can be referred to the above reasoning process.

[0103] In this way, the main control board can detect the first voltage value to determine whether the tank body 10 and the filter 20 are missing, and send a signal to the user when the tank body 10 and the filter 20 are missing, so as to avoid the missing of the tank body 10 and the filter 20, and facilitate the separation of solid waste and sewage.

[0104] Continuing to refer to Figure 1 The tank body 10 includes a body 13 and a cover 14, and the sewage passage 11 is arranged on the body 13 (see Figure 6 The cover 14 is detachably arranged at the opening of the body 13 and defines a sewage collecting space 12 with the body 13. In this way, the filter 20 can be easily taken out from the opening of the body 13, and the sewage collected in the tank body 10 can be easily poured out.

[0105] The body 13 comprises a bottom wall 131, a side wall 133 and a sewage pipe 132, which is connected to the inner surface of the bottom wall 131 and is arranged at an angle with the bottom wall 131. The side wall 133 is connected to the outer side of the bottom wall 131 and extends towards the same direction as the extension direction of the sewage pipe 132, and the side wall 133 is arranged around the sewage pipe 132. The cover body 14, the bottom wall 131, the side wall 133 and the sewage pipe 132 define the collection space 12. The sewage passage 11 is formed in the sewage pipe 132, the collection space 12 is in communication with the sewage outlet of the sewage passage 11, and the end of the collection space 12 in communication with the sewage outlet forms the opening of the entire box body 10 to facilitate the cover setting of the cover body 14.

[0106] Continuing to refer to Figure 3 , the cover body 14 is provided with an airflow passage 141, the inlet 142 of the airflow passage 141 is in communication with the collection space 12, and the recovery system is in communication with the outlet of the airflow passage 141 to suck air from the box body 10, so as to suck the sewage into the box body 10. In an embodiment, the sewage tank 100 further comprises a filter screen 50 arranged at the outlet of the airflow passage 141 to filter the fine solid waste contained in the gas and prevent the solid waste from blocking the motor of the recovery system.

[0107] In an embodiment, referring to Figure 7 , the filter member 20 comprises a filter plate 21. When the filter member 20 is assembled in the box body 10, the filter plate 21 divides the collection space 12 into a first space 121 and a second space 122, the first space 121 is in communication with the external space and the second space 122, and the inlet 142 of the airflow passage 141 is in communication with the first space 121.

[0108] It should be noted that the external space is a space independent of the collection space 21, which can be a space formed directly on the box body 10 or a space formed on other components.

[0109] Specifically, when the box body 10 is provided with the sewage passage 11, the sewage passage 11 serves as the external space at this time, the first space 121 is in communication with the sewage passage 11 and the second space 122, the sewage enters the first space 121 from the sewage passage 11 and flows to the second space 122 after being filtered by the filter plate 21 of the filter member 20, and the solid waste contained in the sewage is blocked and retained in the first space 121 by the filter plate 21.

[0110] It should be noted that when the cleaning device 200 works vertically, the first space 121 is located at the upper part of the second space 122, so that the sewage flows to the second space 122 through the first space 121 under the action of gravity.

[0111] The sewage tank 100 further comprises an anti-backflow structure, which is connected with the filter plate 21. The sewage entering the first space 121 from the sewage channel 11 can at least pass through the anti-backflow structure to enter the second space 122 for storage. The anti-backflow structure can prevent the sewage in the second space 122 from flowing therethrough to enter the first space 121.

[0112] For the cleaning device 200 with the sewage tank 100, when the machine body 300 is upright (for example, the angle relative to the horizontal plane is 60-110 degrees, hereinafter referred to as "upright"), the sewage can be sucked into the sewage channel 11, flow into the first space 121 from the sewage channel 11, and then enter the second space 122 through the anti-backflow structure and be stored in the lower space. When the machine body 300 is greatly inclined (for example, the angle relative to the horizontal plane is less than or equal to 30 degrees, or even the angle relative to the horizontal plane is about 2 degrees, hereinafter referred to as "flat"), the anti-backflow structure can prevent the sewage in the second space 122 from flowing back through the anti-backflow structure to enter the first space 121, so that the sewage cannot flow to the motor, and the motor will not stop rotating, and the cleaning device 200 can still work normally. Therefore, the cleaning device 200 with the sewage tank 100 can not only be used when the machine body 300 is upright, but also can be used when the machine body 300 is greatly inclined or even flat, which greatly facilitates the user.

[0113] In an embodiment, the sewage tank 100 is arranged at the rear side of the machine body 300, i.e., in the movement direction of the cleaning device 200, the sewage tank 100 is arranged at the rear of the machine body 300. In this case, a mounting area cooperating with the machine body 300 is arranged on the circumferential outer surface of the tank body 10, and the anti-backflow structure is radially away from the mounting area. From the overall perspective of the cleaning device 200, the mounting area is located at the front side of the tank body 10, and the anti-backflow structure is located at the rear side of the tank body 10. In this way, when the cleaning device 200 is flat, the anti-backflow structure is closed, so that the sewage in the second space 122 can be prevented from flowing therethrough to enter the first space 121, and the cleaning device 200 can be used normally.

[0114] It is conceivable that in other embodiments, the sewage tank 100 can also be arranged at the front of the machine body 300, as long as the flat use mode of the cleaning device 200 is adapted to the arrangement position of the anti-backflow structure. In addition, it should be noted that when the sewage tank 100 is arranged at the front side of the machine body 300, the anti-backflow structure is radially close to the mounting area. In this way, when the cleaning device 200 is flat, the anti-backflow structure is closed, so that the sewage in the second space 122 can be prevented from flowing therethrough to enter the first space 121, and the cleaning device 200 can be used normally.

[0115] Referring to Figure 8 and Figure 9Further, the filter plate 21 is provided with a first hole group 211, and the anti-backflow structure comprises an anti-backflow valve 61 installed on the filter plate 21 corresponding to the first hole group 211, which is located in the second space 122 and communicates with the first space 121 through the first hole group 211. In this way, when the machine body 300 is laid flat, the anti-backflow valve 61 prevents the sewage in the second space 122 from flowing into the first space 121. In addition, when the sewage tank 100 is cleaned, the filter 20 is taken out of the sewage collection space 12, and the area of the filter plate 21 provided with the first hole group 211 can filter out solid waste in the sewage, thereby realizing the separation of solid waste and sewage.

[0116] In an embodiment, referring to Figure 10 The anti-backflow valve 61 comprises a joint 611 and a flexible flat valve body 612, the joint 611 is installed on the filter plate 21 corresponding to the first hole group 211, and the flexible flat valve body 612 is connected with the joint 611. The outer surface of the flat valve body 612 is configured as a flat surface 613, which can close the flat valve body 612 under the pressure of the external space environment. When the sewage in the first space 121 flows through the flat valve body 612 through the first hole group 211, the flat valve body 612 is opened under the pressure of the sewage, and the sewage flows into the second space 122 for storage. When the cleaning device 200 is laid flat, the sewage in the second space 122 acts on the outer surface of the flat valve body 612 and closes the flat valve body 612, thereby preventing the sewage in the second space 122 from flowing out of the flat valve body 612.

[0117] In other embodiments, the anti-backflow valve 61 can also be an elastic valve plate connected with the filter plate 21 corresponding to the first hole group 211. When the machine body 300 is upright, the pressure of the sewage in the first space 121 on the elastic valve plate causes the elastic valve plate to deform to open the first hole group 211, and the sewage flows into the second space 122 for storage. When the machine body 300 is laid flat, the elastic valve plate elastically returns, and if there is a lot of sewage stored in the second space 122, it can press the elastic valve plate against the filter plate 21 to close the first hole group 211, thereby preventing the sewage in the second space 122 from flowing back into the first space 121.

[0118] In an embodiment, the filter plate 21 is provided with a second hole group 212, and the first space 121 and the second space 122 are freely connected through the second hole group 212. In use, the sewage can flow into the second space 122 through the first hole group 211, and the air in the second space 122 can flow to the upper space through the second hole group 212 and be sucked away by the motor, which makes the sewage flow smoothly to the second space 122. It should be understood that part of the sewage can also flow into the second space 122 from the second hole group 212. In addition, the area of the filter plate 21 provided with the second hole group 212 can also filter out solid waste, which will not be described here.

[0119] The first hole group 211 and the second hole group 212 are separated in the circumferential direction of the filter plate 21, so that when the cleaning device 200 is laid flat for use, the anti-reverse valve 61 is closed and the sewage in the second space 122 cannot flow out through the second hole group 212. In one embodiment, the first hole group 211 and the second hole group 212 are diametrically opposite, so that even if there is a large amount of sewage in the second space 122, it will not flow out through the second hole group 212.

[0120] Continuing to refer to Figure 8 and Figure 9 , the filter 20 further comprises a retaining wall 22 connected to the circumferential edge of the filter plate 21 and extending into the first space 121, the retaining wall 22 and the filter plate 21 together forming a holding space for holding solid waste. In this way, during the process of removing the filter 20 from the sewage holding space 12, the retaining wall 22 can prevent the solid waste from falling into the cabinet 10. Specifically, the retaining wall 22 is provided with a draining hole, so that not only can the solid waste be prevented from falling, but also the sewage can be discharged into the cabinet 10 as much as possible, improving the separation effect of solid waste and sewage.

[0121] The filter 20 further comprises a sleeve pipe 23 connected to the filter plate 21 and extending in the same direction as the retaining wall 22, and the retaining wall 22 surrounds the sleeve pipe 23. The sleeve pipe 23 is sleeved outside the sewage pipe 132 (see Figure 2 ) to facilitate assembly of the filter 20.

[0122] In one embodiment, the two first conductive bodies 31 extend axially into the second space 122 (see Figure 4 and Figure 7 ), and at least part of each first conductive body 31 is exposed in the second space 122. In this way, the first conductive group 30 and the first resistor 40 can not only detect whether the filter 20 is missing, but also detect whether the sewage tank 100 is full.

[0123] It should be noted that the above-mentioned full is not a state in which the entire sewage tank 100 is full, but rather the water level in the sewage tank 100 reaches a limit position. When the water level reaches the limit position, if water is added, the water in the sewage tank 100 is likely to enter the motor, causing damage to the motor or causing sewage to leak out.

[0124] The principle of detecting the fullness of the sewage tank 100 is as follows:

[0125] When the sewage tank 100 is full of sewage, i.e. the sewage level in the second space 122 reaches the limit position, the sewage contacts the two first conductive bodies 31, so that the two first conductive bodies 31 are in conduction. Since the sewage has a resistance, at this time, it is equivalent to connecting a sewage resistance in parallel with the first resistor 40. The resistance after connecting the sewage resistance in parallel with the first resistor 40 is smaller than the resistance of the first resistor 40 or the sewage. At this time, the first voltage value detected by the main control board on the machine body 300 is smaller than the first voltage value when only the first resistor 40 (i.e. the sewage is not full). The main control board determines whether the sewage tank 100 is full of sewage according to the first voltage value.

[0126] It can be understood that in other embodiments, the two first conductive bodies 31 can also not extend into the second space 122, but can be connected through other conductive components to determine whether the sewage tank 100 is full of sewage.

[0127] Referring to Figure 11 , the sewage tank 100 further comprises a first waterproof sleeve 70, which is connected with the filter element 20. Specifically, the first waterproof sleeve 70 is connected with the filter plate 21, and the two first conductive bodies 31 and the first resistor 40 are arranged in the first waterproof sleeve 70. In other words, the first waterproof sleeve 70 is arranged on the two first conductive bodies 31 and covers the first resistor 40, so as to prevent the sewage from contacting the first conductive bodies 31 during flowing from the first space 121 to the second space 122, thereby avoiding misjudgment.

[0128] It should be noted that the first waterproof sleeve 71 does not wrap the entire first conductive body 31, but only exposes the end or part of the first conductive body 31 to form a suspended end, which is used for conduction.

[0129] The first waterproof sleeve 70 is spaced from the anti-backflow structure in the circumferential direction of the filter plate 21, so that more space is provided for the first waterproof sleeve, and the first waterproof sleeve is convenient to arrange. Since the first waterproof sleeve is used to protect the first conductive group 30 and the first resistor 40, the first conductive group 30 is also spaced from the anti-backflow structure in the circumferential direction of the filter plate 21. When the cleaning device 200 is placed flat, the sewage first contacts the first conductive group 30, and in the case that there is less sewage in the second space 122, the full state of the sewage tank 100 is misjudged.

[0130] In a specific embodiment, the first waterproof sleeve 70 is opposite to the anti-backflow structure in the radial direction. In this way, when there is more sewage in the second space 122, the sewage does not contact the first conductive group 30, and the full state of the sewage tank 100 is misjudged.

[0131] The first waterproof sleeve 70 comprises a first waterproof part 71 and a second waterproof part 72, both of which are connected with the filter plate 21. The first waterproof part 71 is arranged in the first space 121 and is integrally formed with the filter plate 21, and the second waterproof part 72 is arranged in the second space 122 and is welded with the filter plate 21. In this way, the first resistor 40 and the first conductive body 31 are not only conveniently installed, but also fixed tightly to prevent water from seeping into the first waterproof sleeve 70, thereby avoiding misjudgment.

[0132] The two first conductive bodies 31 are arranged on the filter plate 21, and each first conductive body 31 comprises a first part and a second part connected with each other. The first part is arranged in the first space 121, and the second part is arranged in the second space 122. The first waterproof sleeve 70 is sleeved on the two first parts, the second waterproof sleeve 120 is sleeved on the two second parts, and the first waterproof part 71 and / or the second waterproof part 72 covers the outside of the first resistor 40. In this way, the entire outer circumferential surface of the first conductive body 31 can be prevented from contacting sewage, and on the basis of preventing misjudgment, the conductive body can be prevented from rusting.

[0133] Further, the first waterproof part 71 has a receiving groove 711, and the filter plate 21 is provided with a receiving opening 213 (see Figure 10 ). Part of the second waterproof part 72 is received in the receiving groove 711 through the receiving opening 213, and the second waterproof part 72 and the groove wall of the receiving groove 711 define a receiving space 73 (see Figure 11 ). The first resistor 40 is received in the receiving space 73. In this way, the contact between sewage and the first resistor 40 is prevented to a greater extent, while the volume of the first protective sleeve occupying the second space 122 is reduced, thereby increasing the water volume of the second space 122.

[0134] Continuing to refer to Figure 4 , the sewage tank 100 further comprises a first conductive sheet 80 and a second conductive sheet 90, both of which are arranged in the above-mentioned receiving space 73. One end of the first resistor 40 is electrically connected with one of the first conductive bodies 31 through the first conductive sheet 80, and the other end is electrically connected with the other of the first conductive bodies 31 through the second conductive sheet 90. In this way, the two first conductive bodies 31 are conveniently electrically connected with the first resistor 40, while the first conductive sheet 80 and the second conductive sheet 90 are prevented from being contacted by sewage, thereby reducing misjudgment.

[0135] In an embodiment, the sewage tank 100 further comprises a second conductive set 110 arranged on the tank body 10, specifically, the second conductive set 110 is arranged on the cover body 14 of the tank body 10. The second conductive set 110 comprises two second conductive bodies 111 which are arranged in a spaced manner. The two first conductive bodies 31 are respectively in contact with the two second conductive bodies 111 in the axial direction, and one of the first conductive bodies 31 is electrically connected to the first conductive component through one of the second conductive bodies 111. In this way, the first conductive set 30 is conveniently electrically connected to the main control board. It should be understood that in other embodiments, the second conductive set 110 can be omitted, and the first conductive set 30 is directly electrically connected to the first conductive component.

[0136] Specifically, the first conductive body 31 and the second conductive body 111 are both probes. It should be understood that in other embodiments, the shape of the first conductive body 31 and the second conductive body 111 is not specifically limited.

[0137] Further, the sewage tank 100 further comprises a second waterproof sleeve 120 which is connected to the cover body 14, and the two second conductive bodies 111 are arranged in the second waterproof sleeve 120. In other words, the second waterproof sleeve 120 is arranged on the two second conductive bodies 111 to prevent the sewage from contacting the second conductive bodies 111 during the process of flowing from the first space 121 to the second space 122, thereby causing misjudgment.

[0138] It should be noted that the second waterproof sleeve 120 does not wrap the entire second conductive body 111, but exposes the end or part of the second conductive body 111 for electrical conduction.

[0139] In an embodiment, the sewage tank 100 further comprises a baffle structure 130 (see Figure 3 and Figure 11 ) connected to the cover body 14. The baffle structure 130 has a baffle cavity therein, one end of the baffle cavity close to the cover body 14 is closed, and the other end has a cover setting opening. The baffle structure 130 is covered outside the sewage pipe 132 through the cover setting opening. The cavity wall of the baffle cavity facing the cover setting opening has a spacing with the end surface of the sewage pipe 132 extending into the baffle cavity. One side of the side wall 133 of the baffle structure 130 facing the main body 13 forms a baffle opening 1301, and the baffle opening 1301 is in communication with the inlet 142 of the airflow passage 141. In this way, the sewage flowing out of the sewage passage 11 enters the baffle cavity, and the baffle structure 130 can guide the sewage splashing thereon to flow downward, thereby avoiding the sewage from splashing everywhere in the tank body 10. In addition, the space in the tank body 10 inhaling from the sewage passage 11 needs to bypass the baffle structure 130 to reach the inlet 142 of the airflow passage 141 on the cover body 14, thereby prolonging the flow path of the water-air mixture and improving the water-air separation effect.

[0140] In one embodiment, the second waterproof sleeve 120 is connected with the baffle structure 130, i.e. the second waterproof sleeve 120 is connected with the cover 14 through the baffle structure 130. Of course, in other embodiments, the second waterproof sleeve 120 can be directly connected with the cover 14.

[0141] Specifically, the second waterproof sleeve 120 is integrally formed with the baffle structure 130. Of course, in other embodiments, the second waterproof sleeve 120 can be separately provided with the baffle structure 130, and finally connected or welded through the connector.

[0142] The baffle port 1301 is radially opposite to the second waterproof sleeve 120, so as to avoid the gas flowing out of the baffle port 1301 from flowing to the second waterproof sleeve 120, and reduce the probability of the second conductive body 111 in the second waterproof sleeve 120 contacting the sewage.

[0143] Further, the baffle port 1301 is radially opposite to the inlet 142 of the airflow channel 141, so as to further prolong the flow path of the water-gas mixture and improve the water-gas separation effect.

[0144] In one embodiment, at least part of each first conductive body 31 is movably connected with the filter plate 21, and / or at least part of the second conductive body 111 is movably connected with the cover 14. Referring to Figure 4 The sewage tank 100 further comprises elastic members 140 provided on the cover 14 and / or the filter plate 21. Each elastic member 140 can exert an elastic force to promote the close contact between each first conductive body 31 and the corresponding second conductive body 111. In this way, the close contact between the first conductive body 31 and the second conductive body 111 in the axial direction is ensured under the action of the elastic member 140, so as to ensure the electrical connection effect.

[0145] In one specific embodiment, the elastic member 140 is a spring, the second conductive body 111 is movably provided in the second waterproof sleeve 120, i.e. the second conductive body 111 is movably connected with the cover 14 through the second waterproof sleeve 120, the elastic member 140 is sleeved outside the second conductive body 111, and the first conductive body 31 is fixedly provided in the first waterproof sleeve 70, i.e. the first conductive body 31 is fixedly connected with the filter plate 21 through the first waterproof sleeve 70. When the first conductive body 31 and the second conductive body 111 axially contact, the second conductive body 111 exerts a force on the elastic member 140, so as to promote the compression of the elastic member 140. The elastic restoring force generated by the elastic member 140 promotes the closer contact between the first conductive body 31 and the second conductive body 111.

[0146] The outer circumferential surface of the second conductive body 111 is provided with an outer protrusion 112 (see Figure 4), one end of the elastic member 140 abuts against the cover 14, and the other end abuts against the outer protrusion 112. When the first conductive body 31 is not in contact with the second conductive body 111, the outer protrusion 112 abuts against the step portion 123 of the second waterproof sleeve 120, and the elastic member 140 is elastically deformed under the compression of the outer protrusion 112. When the first conductive body 31 is in contact with the second conductive body 111, the first conductive body 31 applies a force to the second conductive body 111, the second conductive body 111 further compresses the elastic member 140, and the elastic member 140 generates an elastic restoring force to promote the close contact between the first conductive body 31 and the second conductive body 111. It should be understood that in other embodiments, the type of the elastic member 140 is not specifically limited, and the elastic member 140 can also be an object capable of generating deformation, such as rubber. Meanwhile, the position of the elastic member 140 is not limited, as long as the elastic member 140 can generate an elastic restoring force to promote the close contact between the first conductive body 31 and the second conductive body 111 when the first conductive body 31 is in contact with the second conductive body 111.

[0147] In some embodiments, when the first conductive body 31 is not in contact with the second conductive body 111, the second conductive body 111 protrudes axially from the second waterproof sleeve 120 under the elastic restoring force of the elastic member 140, and the length of the protrusion of the second conductive body 111 from the second waterproof sleeve 120 is 3 mm. When the first conductive body 31 is in contact with the second conductive body 111, the part of the second conductive body 111 protruding from the second waterproof sleeve 120 is completely or partially retracted into the second waterproof sleeve 120, and the end surface of the first waterproof sleeve 70 is in contact with the end surface of the second waterproof sleeve 120 to ensure the waterproof effect. In other embodiments, when the first conductive body 31 is not in contact with the second conductive body 111, the second conductive body 111 can also be located in the second waterproof sleeve 120, and the first conductive body 31 partially protrudes from the first waterproof sleeve 70. The first conductive body 31 protrudes into the second waterproof sleeve 120 and abuts against the second conductive body 111, and the end surface of the first waterproof sleeve 70 is in contact with the end surface of the second waterproof sleeve 120 to ensure the waterproof effect.

[0148] It should be understood that in other embodiments, when the first conductive body 31 abuts against the second conductive body 111, the first waterproof sleeve 70 and the second waterproof sleeve 120 can also be partially sleeved to ensure the waterproof effect. Specifically, at least one of the first waterproof sleeve 70 and the second waterproof sleeve 120 is provided with a rubber waterproof member, and when the first conductive body 31 abuts against the second conductive body 111, the first waterproof sleeve 70 and the second waterproof sleeve 120 are partially sleeved, and at this time, the rubber waterproof member is located between the sleeved portions of the first waterproof sleeve 70 and the second waterproof sleeve 120 to further improve the waterproof effect.

[0149] In some other embodiments, the second conductive body 111 is fixedly arranged in the second waterproof sleeve 120, the first conductive body 31 is movably arranged in the first waterproof sleeve 70 at one end close to the second conductive body 111, and the elastic member 140 is arranged in the first waterproof sleeve 70. For example, the first portion and the second portion of the first conductive body 31 are connected by a soft wire, and the elastic member 140 is sleeved on the first portion. When the first portion of the first conductive body 31 axially contacts the second conductive body 111, the elastic member 140 is compressed, and the elastic restoring force generated by the elastic member 140 causes the first portion of the first conductive body 31 and the second conductive body 111 to contact more closely.

[0150] It should be understood that in some other embodiments, the first conductive body 31 and the second conductive body 111 can also be movably arranged as long as the first conductive body 31 and the second conductive body 111 can axially and closely contact each other.

[0151] Of course, in some other embodiments, the elastic member 140 can be omitted, and the first conductive body 31 and the second conductive body 111 can be fixedly arranged, and the electrical connection between the first conductive body 31 and the second conductive body 111 can also be achieved.

[0152] In an embodiment, the sewage tank 100 further comprises a second resistor (see Figure 4 ). The second resistor is electrically connected between the two second conductive bodies 111. Specifically, the resistance of the second resistor can be equal to or different from the resistance of the first resistor 40. More specifically, the second resistor can be an element made of a conductive material. Preferably, the second resistor is a resistor with a resistance value.

[0153] The fuselage 300 is also provided with a second conductive component. When the sewage tank 100 is connected to the fuselage 300, the second conductive body 111 can be electrically connected to the second conductive body 111 on the fuselage. The second resistor is electrically connected between the two second conductive bodies 111. In this way, the main control board can determine whether the tank 10 is missing by detecting the voltage value of the terminal or pin of the second conductive component connected to the second conductive body 111 as the positive electrode. That is, the main control board can determine whether the tank 10 is installed on the fuselage 300 according to the voltage threshold interval to which the second voltage value belongs. The second voltage value is the voltage value between the two second conductive bodies 111.

[0154] Specifically, as Figure 3 , Figure 4 , Figure 7In the shown embodiment, the second conductive component is the same as the first conductive component, and in this case, the first voltage value is the same as the second voltage value. In this way, the number of conductive components can be reduced, and the main control board can determine whether the filter 20 and the box 10 are installed in place through one pin. It should be understood that in other embodiments, the first conductive component and the second conductive component can also be different, and in this case, the first voltage value and the second voltage value are different. In this case, the second conductive body is separately provided, i.e., not electrically connected to the first conductive body 31. The second conductive body is a separately provided conductive body. The first conductive body 31 is electrically connected to the first conductive component through the second conductive body 111. The second conductive body is used to be electrically connected to the second conductive component.

[0155] When the box 10 of the sewage tank 100 is not assembled on the fuselage 300, in this case, the first conductive component is equivalent to an open circuit, and the equivalent resistance Re between the two electrode interfaces is infinite, so that the first voltage value detected by the main control board is the maximum. When the box 10 is assembled on the fuselage 300 but the filter 20 is not assembled, in this case, the two electrode interfaces of the first conductive component Electrode In are connected to the two conductive bodies of the sewage tank 100. Since there is little sewage in the sewage tank 100 at this time, no matter how the sewage tank 100 is shaken, the sewage will not reach the conductive body at the water fullness warning line. Therefore, the equivalent resistance Re between the two electrode interfaces of the first conductive component is composed of the two conductive bodies and the second resistor, and the first voltage value detected by the main control board is smaller. When the box 10 and the filter 20 are both assembled and the sewage is not full, the equivalent resistance Re between the two electrode interfaces of the first conductive component is composed of the two conductive bodies, the second resistor, and the first resistor 40, and the voltage value detected by the main control board is smaller than the voltage value when only the box 10 is assembled. By setting the second resistor, the cleaning device 200 has the function of separately detecting whether the box 10 is missing.

[0156] When the sewage tank 100 is full of water, i.e., when the water level in the second space 122 reaches the limit position, the sewage contacts the two first conductive bodies 31, so that the two first conductive bodies 31 are conductive. Since the sewage has a resistance, the equivalent resistance Re between the two electrode interfaces of the first conductive component is composed of the two conductive bodies, the second resistor, the first resistor 40, and the sewage resistance, and the voltage value detected by the main control board is smaller than the voltage value when the sewage tank 100 is installed. The main control board determines whether the water is full according to the voltage value.

[0157] It should be understood that in other embodiments, the resistance values of the first resistor 40 and the second resistor can also be set to other values, which are not limited herein.

[0158] In an embodiment, the sewage tank 100 further comprises a third conductive sheet and a fourth conductive sheet, one end of the second resistor is electrically connected to one of the second conductive bodies 111 through the third conductive sheet, and the other end of the second resistor is electrically connected to the other of the second conductive bodies 111 through the fourth conductive sheet. In this way, the second resistor is electrically connected to the two second conductive bodies 111 conveniently.

[0159] The second waterproof sleeve 120 is arranged outside the third conductive sheet and the fourth conductive sheet to prevent the sewage from contacting the third conductive sheet and the fourth conductive sheet, thereby reducing misjudgment. Another embodiment of the present application further provides a cleaning device 200 comprising the above sewage tank 100, and the cleaning device 200 further comprises a machine body 300, and the machine body 300 is provided with a main control board and a conductive component electrically connected to the main control board.

[0160] The sewage tank 100 comprises a tank body 10 and a filter 20, the tank body 10 is provided with a sewage collection space 12, and the filter 20 is arranged in the sewage collection space 12 and detachably connected to the tank body 10. The sewage tank 100 further comprises a first conductive group 30 and a first resistor 40, the first conductive group 30 is arranged on the filter 20 and comprises two first conductive bodies 31 arranged at intervals and capable of being electrically connected to the main control board through the conductive component, and the first resistor 40 is electrically connected between the two first conductive bodies 31.

[0161] As can be seen from the above description, the main control board can detect the first voltage value to determine whether the tank body 10 and the filter 20 are missing, and a signal is sent to prompt the user when the tank body 10 and the filter 20 are missing, so that the missing of the tank body 10 and the filter 20 can be avoided, and the separation of solid waste and sewage is facilitated.

[0162] The technical features of the above-described embodiments can be combined arbitrarily, and to make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present application.

[0163] The above-described embodiments only express several embodiments of the present application, the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A sewage tank (100) applied to a cleaning device (200), the cleaning device (200) comprising a machine body (300), a floor brush assembly arranged on the machine body (300), and a main control board arranged on the machine body (300), characterized in that, The sewage tank (100) comprises: a tank body (10) comprising a body (13) and a cover (14), the cover (14) and the body (13) forming a sewage collection space (12) in communication with the brush assembly; a filter (20) detachably arranged in the sewage collection space (12); a first conductive group (30) arranged on the filter (20) and comprising two first conductive bodies (31) arranged at intervals; and a second conductive group (110) arranged on the cover (14); the two first conductive bodies (31) can be electrically connected to a first conductive component on the fuselage (300) through the second conductive group (110) when the sewage tank (100) is connected to the fuselage (300); a first resistor (40) electrically connected between the two first conductive bodies (31); wherein the main control board is electrically connected to the first conductive component on the fuselage (300), and the main control board is used to determine whether the filter (20) is installed in the tank body (10) according to a voltage threshold interval to which a first voltage value belongs, the first voltage value being a voltage value across the first conductive component.

2. The sump tank (100) according to claim 1, characterized in that The filter (20) comprises a filter plate (21) that divides the sewage collection space (12) into a first space (121) and a second space (122), the first space (121) being in communication with an external space and the second space (122); the two first conductive bodies (31) extend axially into the second space (122), and at least part of each first conductive body (31) is exposed to the second space (122).

3. The sump tank (100) according to claim 1, characterized in that The sewage tank (100) further comprises a first waterproof sleeve (70) connected to the filter (20) and sleeved around the two first conductive bodies (31) and covering the first resistor (40) outside.

4. The sump tank (100) according to claim 3, characterized in that The filter (20) comprises a filter plate (21) that divides the sewage collection space (12) into a first space (121) and a second space (122), the first space (121) being in communication with an external space and the second space (122); each first conductive body (31) is arranged through the filter plate (21); The first waterproof sleeve (70) comprises a first waterproof portion (71) and a second waterproof portion (72), the first waterproof portion (71) being arranged in the first space (121) and connected to the filter plate (21), and the second waterproof portion (72) being arranged in the second space (122) and connected to the filter plate (21); Each of the first conductive bodies (31) comprises a first part and a second part connected to each other, the first part is arranged in the first space (121), the second part is arranged in the second space (122), the first waterproof part (71) is sleeved on two first parts, the second waterproof part (72) is sleeved on two second parts, and the first waterproof part (71) and / or the second waterproof part (72) covers the first resistor (40) outside.

5. The sump tank (100) according to claim 4, characterized in that The first waterproof part (71) is integrally formed with the filter plate (21); and / or the second waterproof part (72) is welded with the filter plate (21).

6. The sump tank (100) according to claim 4, characterized in that The first waterproof part (71) has a receiving groove, the filter plate (21) is provided with a receiving opening in communication with the receiving groove, part of the second waterproof part (72) is received in the receiving groove through the receiving opening, the second waterproof part (72) and the groove wall of the receiving groove define a receiving space (73), and the first resistor (40) is received in the receiving space (73).

7. The sump tank (100) according to claim 1, characterized in that The sewage tank (100) further comprises a first conductive sheet (80) and a second conductive sheet (90), one end of the first resistor (40) is electrically connected to one of the first conductive bodies (31) through the first conductive sheet (80), and the other end of the first resistor (40) is electrically connected to the other of the first conductive bodies (31) through the second conductive sheet (90).

8. The bilge tank (100) according to any one of claims 1-7, characterized in that The second conductive group (110) comprises two second conductive bodies (111) arranged at intervals and capable of being electrically connected to the first conductive part; The two first conductive bodies (31) can be in contact with the two second conductive bodies (111) in the axial direction one by one, and one of the first conductive bodies (31) is electrically connected to the first conductive part through one of the second conductive bodies (111).

9. The sump tank (100) according to claim 8, characterized in that The cover body (14) is detachably arranged at the opening of the body (13); The second conductive group (110) is arranged on the cover body (14).

10. The sump tank (100) according to claim 8, characterized in that At least part of each of the first conductive bodies (31) is movably connected to the filter element (20), and / or at least part of each of the second conductive bodies (111) is movably connected to the tank body (10); The sewage tank (100) further comprises elastic members (140), the elastic members (140) are arranged on the tank body (10) and / or the filter element (20), and each of the elastic members (140) can exert an elastic force to make each of the first conductive bodies (31) closely contact the corresponding second conductive body (111).

11. The sump tank (100) according to claim 10, characterized in that At least part of the second conductive body (111) is movably connected to the tank body (10), the elastic member (140) is arranged on the tank body (10), and the first conductive body (31) is fixedly connected to the filter element (20).

12. The sump tank (100) according to claim 10, characterized in that The second electric conductor (111) is fixedly connected with the box body (10), the elastic member (140) is arranged on the filter element (20), and one end of the first electric conductor (31) close to the second electric conductor (111) is movably connected with the filter element (20).

13. The sump tank (100) of claim 10, wherein, The elastic member (140) is a spring, and the spring is sleeved outside at least part of the first electric conductor (31) and / or at least part of the second electric conductor (111).

14. The sump tank (100) of claim 10, wherein, The outer circumferential surface of the second electric conductor (111) is provided with an outer protruding portion (112), one end of the elastic member (140) abuts against the cover body (14), and the other end abuts against the outer protruding portion (112); the sewage tank (100) comprises a second waterproof sleeve (120), the second waterproof sleeve (120) is connected with the box body (10) and sleeved outside the two second electric conductors (111); When the first electric conductor (31) is not in contact with the second electric conductor (111), the outer protruding portion (112) abuts against the stepped portion (123) of the second waterproof sleeve (120), and the elastic member (140) is elastically deformed under the compression of the stepped portion (123); when the first electric conductor (31) is in contact with the second electric conductor (111), the first electric conductor (31) applies a force to the second electric conductor (111), the second electric conductor (111) compresses the elastic member (140), and the elastic member (140) generates an elastic restoring force to make the first electric conductor (31) and the second electric conductor (111) contact closely.

15. The sump tank (100) according to claim 14, characterized in that When the first electric conductor (31) is not in contact with the second electric conductor (111), the second electric conductor (111) protrudes axially out of the second waterproof sleeve (120) under the elastic restoring force of the elastic member (140).

16. The sump tank (100) of claim 8, wherein, The sewage tank (100) comprises a second waterproof sleeve (120), the second waterproof sleeve (120) is connected with the box body (10) and sleeved outside the two second electric conductors (111).

17. The sump tank (100) of claim 1, wherein, The sewage tank (100) further comprises a second electric conductor group (110) arranged on the box body (10), and the second electric conductor group (110) comprises two second electric conductors (111) arranged at intervals and capable of being electrically connected with a second electric component on the fuselage (300) when the sewage tank (100) is matched with the fuselage (300). The sewage tank (100) further comprises a second electric resistor electrically connected between the two second electric conductors (111).

18. The sump tank (100) of claim 1, wherein, The filter element (20) comprises a filter plate (21), the filter plate (21) divides the sewage collecting space (12) into a first space (121) and a second space (122), the first space (121) is communicated with an external space and the second space (122); The sewage tank (100) further comprises an anti-backflow structure connected with the filter plate (21), sewage entering the first space (121) from the external space can enter the second space (122) for storage at least through the anti-backflow structure, and the anti-backflow structure can prevent sewage in the second space (122) from flowing therethrough to enter the first space (121).

19. A cleaning device (200) characterized by The sewage tank (100) is detachably assembled on the fuselage (300), and the sewage tank (100) further comprises a second conductive group (110) arranged on the tank body (10), wherein the second conductive group (110) comprises two second conductive bodies (111) arranged at intervals and capable of being electrically connected with a second conductive component on the fuselage (300) when the sewage tank (100) is connected with the fuselage (300); The sewage tank (100) further comprises a second resistor electrically connected between the two second conductive bodies (111); The main control board is further configured to determine whether the tank body (10) is installed on the fuselage (300) according to a voltage threshold interval to which a second voltage value belongs, wherein the second voltage value is a voltage value between the two second conductive components.

20. The cleaning device (200) according to claim 19, characterized in that The main control board is further configured to determine whether the sewage tank (100) is full according to a voltage threshold interval to which the first voltage value belongs.

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