CN115944249A - Be applied to cleaning device's sewage case - Google Patents

Abstract

The invention discloses a sewage tank applied to cleaning equipment, which comprises a tank body, a tank cover and a water filtering basket component, wherein the tank cover can be assembled at the top of the tank body in a detachable mode, the water filtering basket component is arranged in the tank body, a first probe component and a second probe component which are used for detecting water level information in the tank body are arranged below the tank cover, and the water filtering basket component can isolate the first probe component and/or the second probe component from conductive impurities. Based on the arrangement, the first probe assembly and/or the second probe assembly are not easy to contact with conductive impurities or even can not contact with the conductive impurities, so that a closed loop path with interference property is avoided, and the detection precision of the water level is improved.

Description

Be applied to cleaning device's sewage case

Technical Field

The invention relates to the technical field of cleaning equipment, in particular to a sewage tank applied to the cleaning equipment.

Background

At present, a floor washing machine with a water spraying function can effectively clean the floor, so that the floor washing machine is favored by consumers. A scrubber machine typically includes a body, a clean water tank, a dirty water tank, a sprinkler system in communication with the clean water tank, and a motor in communication with the dirty water tank for providing suction. When the floor washing machine is used, the water spraying system sprays clean water to the ground to wet pollutants on the ground, and sewage is sucked into the sewage tank by suction force provided by the motor; in addition, the scrubber can also clean the sewage originally existing on the ground by utilizing suction.

Referring to fig. 1, the water level detection structure adopted by the conventional sewage tank is as follows: the positive pole water level sensing probe a and the negative pole water level sensing probe b are arranged in the sewage tank c and are electrically connected with the power supply and the controller; when the water level in the sewage tank c simultaneously contacts the positive water level sensing probe a and the negative water level sensing probe b, a closed loop path can be formed, and the subsequent controller sends out 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 conductive impurities d (such as metal wires, noodles and the like) with large length are adhered to the two probes at the same time, the controller can be caused to give an alarm by mistake, so that the detection precision of the water level is influenced.

Disclosure of Invention

The invention aims to provide a sewage tank applied to cleaning equipment to solve the problem that a water level detection structure is prone to false alarm.

In order to achieve the purpose, the invention adopts the following technical scheme:

a waste tank comprising: the water level sensor comprises a box body and a box cover which can be assembled at the top of the box body in a detachable mode, wherein a first probe assembly and a second probe assembly which are used for detecting water level information in the box body are arranged below the box cover, and the second probe assembly is positioned above the first probe assembly;

the water filtering device is characterized by further comprising a water filtering basket assembly arranged in the box body, wherein the water filtering basket assembly can isolate the first probe assembly and/or the second probe assembly from conductive impurities so as to avoid a closed loop path with interference properties.

Preferably, the water filtering basket assembly comprises a water filtering basket for filtering water liquid, and the water filtering basket divides the cavity of the box body into an upper space and a lower space; the water filtering basket filters water liquid when the water liquid enters the lower space from the upper space;

wherein the first probe assembly is disposed in the lower space, the first probe assembly including a first probe and a second probe.

Preferably, an inserting and matching guide structure is constructed between the water filtering basket and the box body, or the inner section of the box body is constructed into a special-shaped section, and the inserting and matching outer surface of the water filtering basket is constructed into a profiling structure matched with the special-shaped section;

an inserting and matching guide structure is constructed between the box cover and the box body, or the inner section of the box body is constructed into a special-shaped section, and the inserting and matching outer surface of the box cover is constructed into a profiling structure matched with the special-shaped section.

Preferably, the water filtering basket assembly comprises a water filtering basket for filtering water liquid and a handle part connected to the top of the water filtering basket; the handle structure is the guard shield structure, the structural water hole that has of guard shield, the guard shield structure can cover and locate the outside of second probe subassembly is used for blockking the contact of second probe subassembly and electrically conductive debris.

Preferably, the shield structure is capable of being combined with part of the case lid to form a shield cavity for receiving the second probe assembly, or

The shield structure can be combined with a portion of the case lid and a portion of the case body into a shield cavity for receiving the second probe assembly.

Preferably, the handle portion has an upper end width larger than a lower end width thereof.

Preferably, the handle portion is detachably integrated with the water filtering basket.

Preferably, the tank body is configured with a fluid passage disposed substantially in a height direction thereof, one end of the fluid passage being formed as a sump inlet and the other end being formed as a chamber inlet;

the inner wall of the box body is provided with a first supporting platform and/or the outer wall of the fluid channel is provided with a second supporting platform, and the first supporting platform and the second supporting platform are used for limiting the downward movement of the water filtering basket relative to the box body;

when the water filtering basket and the box cover are both installed on the box body, the shield cover buckles the second probe assembly.

Preferably, the water filtering basket divides the chamber of the box body into an upper space and a lower space; the water filtering basket filters water liquid when the water liquid enters the lower space from the upper space;

wherein the first probe assembly is disposed in the headspace; first probe subassembly includes first probe and second probe, the outside of first probe is provided with the protecting crust, offer the inlet guide that is used for separating the electrically conductive debris of fender on the protecting crust, water liquid can flow through the inlet guide.

Preferably, the outer surface of the protective shell is substantially in the shape of an inverted cone.

Preferably, the water diversion port comprises a bottom water diversion port positioned at the bottom of the protective shell and a side water diversion port positioned at the side part of the protective shell;

the first probe is completely arranged in the protective shell, and the length of the first probe which can be contacted with water liquid is not less than 8mm.

Preferably, the distance between the lower end of the first probe and the lower end of the protective shell is more than 3 mm.

Preferably, the width of the side water diversion port is set to be more than 3 mm.

Preferably, the outer surface of the first probe is attached to the inner surface of the casing, or the minimum distance between the outer surface of the first probe and the inner surface of the casing is not less than 2mm.

As a preferred scheme, the first probe is electrically connected with a first probe body, and the second probe is electrically connected with a second probe body; the first probe body and the second probe body are connected to the bottom of the box cover, and insulating layers are arranged on the outer sides of the first probe body and the second probe body.

Preferably, the distance between the first probe and the second probe is 30mm-150mm; the creepage distance between the first probe and the second probe is more than 80 mm.

Preferably, the height of the insulating layer is 50mm or more.

Preferably, the tank body is configured with a fluid channel arranged substantially along the height direction thereof, one end of the fluid channel is formed as a wastewater tank inlet, and the wastewater tank inlet is arranged at the bottom of the tank body;

the sewage tank is arranged on the machine body from back to front, the top surface of the tank cover is a first combining surface inclining downwards from back to front, and the bottom surface of the tank body is a second combining surface inclining upwards from back to front.

Preferably, a placing seat is arranged at the lower part of the second combining surface, and the plane where the bottom end of the placing seat is located is basically vertical to the height direction of the sewage tank.

Preferably, the placing seat is in a U-shaped structure, and the front end of the U-shaped structure is configured as the opening end of the U-shaped structure.

The invention has the beneficial effects that:

the water filter basket assembly in this application can keep apart first probe assembly and/or second probe assembly and electrically conductive debris to closed loop path that has avoided producing the interference property. Furthermore, the invention not only effectively isolates conductive impurities, but also improves the detection precision of the water level, strengthens the installation stability of the water filtering basket component, and the like through a series of modes of constructing the handle part into a shield structure, arranging the first probe component in the lower space, arranging a protective shell at the outer side of the first probe, and the like.

Drawings

FIG. 1 is a schematic view of a water level detecting structure in the background art;

FIG. 2 is a schematic view showing the entire structure of a waste water tank according to an embodiment of the present invention;

FIG. 3 is a sectional view showing a side view of the waste water tank of FIG. 2;

FIG. 4 is a sectional view showing a front view of the sump of FIG. 2;

FIG. 5 is a schematic view of a cover according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of the structure of the case according to an embodiment of the present invention;

FIG. 7 is a schematic structural view of a water filter basket assembly according to an embodiment of the present invention;

FIG. 8 is a schematic view of a water filter basket according to an embodiment of the present invention;

FIG. 9 is a schematic structural view of a shield structure according to an embodiment of the present invention;

FIG. 10 is a schematic view of a handle portion in combination with a water filter basket according to an embodiment of the present invention;

FIG. 11 is a sectional view showing a front view of a waste water tank according to an embodiment of the present invention;

FIG. 12 is a schematic view of the structure of a first probe and a second probe in one embodiment of the present invention;

FIG. 13 is a front view in structural cross-section of the first and second probes of FIG. 12;

FIG. 14 is a cross-sectional view of a front view of a first probe in accordance with an embodiment of the present invention;

FIG. 15 is a schematic structural diagram of a placement base according to an embodiment of the present invention;

FIG. 16 is a schematic top view of the case according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means 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 with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do 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 thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The invention provides a sewage tank which is applied to cleaning equipment; the cleaning device may be, but is not limited to, a multi-function cleaner, a floor scrubber, a window wiper, or a steam mop.

Taking the cleaning device as a floor washing machine for example: the scrubber includes a body having a cleaning element (e.g., a floor brush) mounted at a first end of the body, a handle configured at a second end of the body, and a liquid treatment assembly mounted on the body. The liquid treatment component can comprise a motor, a clean water tank, a sewage tank, a water spraying system and the like. The motor, clean water tank and water injection system are well known to those skilled in the art and will not be described in detail herein.

When the floor washing machine is used, the water spraying system sprays clean water from the clean water tank to the ground so as to moisten pollutants on the ground; the suction force provided by the motor sucks water into the sewage tank to clean the floor. In addition, the floor washing machine can also utilize suction force to suck water liquid originally existing on the ground into the sewage tank so as to clean the ground.

It will be appreciated that the sump tank is configured as part of the air channel in the scrubber: the air flow may enter the interior of the waste tank from the waste tank inlet 1111 of the waste tank; under the action of gravity, centrifugal force, etc., dry garbage, water liquid, impurities mixed in the water liquid, etc. are retained in the sewage tank, and the air flow can be discharged out of the sewage tank through the sewage tank outlet 120 of the sewage tank.

Referring to fig. 2, 3 and 6, the foul water tank of the present application includes a tank body 11 and a tank cover 12; a chamber part capable of containing water and sundries is formed in the box body 11 and is provided with an open top port 1103; the case cover 12 is detachably installed in the ceiling port 1103 to dispose water, impurities, or clean the chamber. When the cover 12 is closed over the top opening 1103, the chamber section communicates with the outside only by means of the sump inlet 1111 and the sump outlet 120.

As an embodiment of the application, a first probe assembly and a second probe assembly are arranged in a cavity part; referring to fig. 4 and 5, the 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 all fixed on the case cover 12 and extend downwards at the bottom of the case cover 12; thus, the first and second probe assemblies can be removed with the tank cover 12 to facilitate cleaning of the components of the waste tank.

Further, the first probe 211, the second probe 212, the third probe 221, and the fourth probe 222 are respectively portions of the first probe, the second probe, the third probe, and the fourth probe, which are in contact with the outside world and are electrically conductive. Wherein the first probe 211 and the second probe 212 constitute the first probe assembly 21, and the third probe 221 and the fourth probe 222 constitute the second probe assembly 22.

The second probe assembly 22 is arranged on the upper front side or the upper rear side of the first probe assembly 21; with particular reference to the embodiment of FIG. 3, the second probe assembly 22 is located on the upper rear side of the first probe assembly 21.

When the water level contacts the first probe 211 and the second probe 212 at the same time, a closed-loop electric path can be formed, and water level information is detected; when the water level contacts the third probe 221 and the fourth probe 222 at the same time, a closed-loop electric path can be formed to detect the water level information. The first probe and the third probe can be anode water level sensing probes or cathode water level sensing probes; correspondingly, the second probe and the fourth probe are negative water level sensing probes or positive water level sensing probes.

In a specific application scene, the water liquid X accumulates in the cavity from bottom to top under the action of gravity; when the water level contacts the first probe 211 and the second probe 212, it indicates that the accumulated amount of the water liquid in the chamber has reached a predetermined value, and if the water liquid is continuously filled into the chamber, the water liquid may be discharged out of the wastewater tank through the wastewater tank outlet 120; when the waste water tank is inclined due to excessive use or accidentally dumped, the water level contacts the third probe 221 and the fourth probe 222, indicating that the waste water tank is deflected by a relatively large amount in the vertical direction, and the water may be discharged out of the waste water tank through the waste water tank outlet 120. In the above situation, a countermeasure function, such as shutdown (turning off the motor to interrupt the suction force), may be activated.

Referring to fig. 13, as an embodiment of the present invention, the first probe further includes a first probe body 213 electrically connected to the first probe 211, and an insulating layer 23 is disposed outside the first probe body 213. The first probe 213 may be a wire, and the insulating layer 23 is disposed outside the first probe 213 by injection molding; the first probe 213 may also be a hollow or solid conductive rod, and is connected with the first probe 211 into a whole, and the insulating layer 23 is disposed outside the first probe 213 by injection molding, spraying insulating paint, spraying insulating glue, and coating.

For the convenience of production and cost saving, the first probe 211 and the first probe body 213 are preferably an integrally formed conductive rod.

Further, the second probe also comprises a second probe body 214 electrically connected with the second probe 212, and an insulating layer 23 is arranged on the outer side of the second probe body 214; wherein, the second probe 214 can be defined by the same structure as the first probe 213.

Referring to fig. 3 and 6, in the present application, a tank body 11 is formed with a fluid channel 111, one end of the fluid channel 111 is formed as a sump inlet 1111, and the other end is formed as a chamber inlet 1112; water liquid, sundries and the like sequentially flow through the sewage tank inlet 1111 and the cavity inlet 1112 and then enter the cavity.

In order to avoid the conductive impurities from causing interference to the first probe assembly and/or the second probe assembly, as shown in fig. 3 and 4, a water filtering basket assembly 3 is arranged in the cavity and comprises a water filtering basket 31 and a handle part 32 connected to the top of the water filtering basket 31, the water filtering basket 31 can be installed in the cavity through the top opening 1103, and the handle part 32 is convenient for a user to install the water filtering basket 31 in a hand-held mode.

In one embodiment, water filtration basket 31 divides the chamber into an upper space 1101 and a lower space 1102, with chamber inlet 1112 disposed in upper space 1101; during the process of water entering the lower space 1102 from the upper space 1101, at least a portion of the impurities in the upper space 1101 will be trapped above the water filter basket 31.

In order to increase the entire capacity of the housing 11, it is preferable that the volume of the lower space 1102 is larger than the volume of the upper space 1101; therefore, a larger amount of sewage can be accommodated, and the time for single use of the cleaning equipment is ensured.

With reference to fig. 8, the first probe 211 and the second probe 212 are disposed in the lower space 1102, and the water filtering basket 31 is provided with a probe through hole 311 for passing the first probe 213 and the second probe 214; it is understood that the bottom end of the insulating layer 23 may be attached to the upper end of the probe through hole 311, may be disposed in the probe through hole 311, and may also extend to the lower side of the probe through hole 311. Therefore, the conductive impurities are not easy to or even can not contact with the first probe 211 and/or the second probe 212, and a closed loop path with interference property is further avoided, so that the detection precision of the water level is improved.

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 assembly structure of the water filtering basket 31 and the tank body 11 and the assembly structure of the tank cover 12 and the tank body 11 are all configured to be a fool-proof structure, so that the assembly efficiency is improved, and the user experience is improved.

Specifically, inserting guide structures are respectively configured between the water filtering basket 31 and the box body 11 and between the box cover 12 and the box body 11. For example, one of the water filtering basket 31 and the box body 11 is provided with a vertical first guide groove, and the other one is provided with a first guide strip which can be matched with the first guide groove, when the first guide groove and the first guide strip are combined, the only combined position of the water filtering basket 31 and the box body 11 can be effectively limited in the circumferential direction, so that the foolproof effect is achieved; obviously, a plug-in guide structure is constructed between the box cover 12 and the box body 11, and the fool-proof effect can be achieved as well. Since the position of the first probe assembly 21 relative to the box cover 12 and the position of the probe through hole 311 relative to the water filtering basket 31 are fixed, the first probe assembly 21 can be smoothly aligned with the probe through hole 311 in the preset position.

In addition, the inner section (i.e., the cavity section) of the box body 11 may be configured to be irregular, and the outer surface of the water filter basket 31 and the outer surface of the box cover 12 may be configured to be a contour structure adapted to the irregular section, so as to achieve the foolproof effect. For example, the inner cross section of the case 11 is configured to be a trapezoidal structure, a triangular (non-regular triangular) structure, an irregular shape, or the like, and the configuration to be a foolproof structure is not suitable for, for example, a rectangle (there are two mounting directions), a regular triangle (there are three mounting directions), a square (there are four mounting directions), a circle (there are an infinite number of mounting directions), or the like.

Referring to fig. 16, in an embodiment, the irregular internal cross-sectional shape includes a first curve segment 1121, a second curve segment 1122 opposite to the first curve segment 1121, and a third curve segment 1123 and a fourth curve segment 1124 which are symmetrically disposed; wherein, the third curve segment 1123 and the fourth curve segment 1124 are connected to the first curve segment 1121 and the first curve segment 1121 to form a closed inner contour, and meanwhile, the first curve segment 1121 and the second curve segment 1122 are asymmetrically arranged (may be selected to be respectively composed of different numbers/curvatures of arcs); the outer contour of the fitting portion of the water filter basket 31 and the outer contour of the fitting portion of the box cover 12 correspond to the inner contour lines. Thus, the cover 12, the water filter basket 31 and the housing 11 all have a unique mating state, thereby ensuring that the first probe assembly 21 can be quickly aligned with the probe penetration hole 311.

In one embodiment, as shown in fig. 3 and 7, the handle portion 32 is configured as a shield structure that is disposed on the exterior of the second probe assembly 22.

The shield structure can be combined with part of the case lid 12 to form a shield cavity for receiving the second probe assembly 22; alternatively, the shield structure can be combined with part of the lid 12 and part of the case 11 to form a shield cavity for receiving the second probe assembly 22; wherein the shield structure is configured with water through holes communicating the shield cavity and the upper space 1101.

It can be understood that when the waste water tank is tilted in an overuse or accidentally dumped, water can enter the shield cavity through the water through holes and contact the third probe 221 and the fourth probe 222, and at least some of the impurities in the upper space 1101 will be intercepted outside the shield structure by the shield structure, so as to avoid creating a closed loop passage with interference properties.

Specifically, referring to FIG. 9, the shield structure may be configured to be open only on the top side, with the top side engaging the bottom of the snap-fit lid 12; the water through holes are formed in the non-opening part of the protective cover structure. For example, the rear side 322, the front side 323, the bottom side and the two side sides 321 of the shield structure are provided with enclosing plates, and the water through holes are opened on at least one of the rear enclosing plate, the front enclosing plate, the bottom enclosing plate and the two side enclosing plates. Specifically, in the embodiment shown in fig. 9, the water through holes are formed in the front side enclosing plate, the bottom side enclosing plate and the two side enclosing plates.

Referring to fig. 5 and 7, the shroud structure may be configured to be open only on the top and front sides, with the bottom of the case lid 12 configured with a downwardly extending baffle 122; the top side of the shield structure is engaged and buckled at the bottom of the box cover 12, and the front side of the shield structure is engaged and buckled on the baffle 122; the water through holes are formed in the non-opening part of the protective cover structure. For example, the rear side 322, the bottom side and the two side sides 321 of the shield structure are provided with enclosing plates, and the water through holes are formed in at least one of the rear side enclosing plate, the bottom side enclosing plate and the two side enclosing plates.

Of course, the shield structure may be configured to be open only on the top side and the back side (the shield structure top side engaging buckle is mounted on the bottom of the case lid 12 and the shield structure back side engaging buckle is mounted on the inner wall of the case body 11), or to be open on all of the top side, the front side, and the back side (the shield structure top side engaging buckle is mounted on the bottom of the case lid 12, the shield structure front side engaging buckle is mounted on the baffle 122, and the shield structure back side engaging buckle is mounted on the inner wall of the case body 11).

To facilitate the user's removal of the handle portion 32 from the cavity, referring to FIG. 10, the present application defines that the handle portion 32 has an upper end width L greater than a lower end width thereof; in view of this, when the handle portion 32 is configured as a shroud structure, effective isolation of the second probe assembly 22 from conductive debris is also facilitated. Specifically, the handle portion 32 may include at least a substantially trapezoidal, semicircular, or triangular portion in a front-rear projection.

With continued reference to fig. 10, the shield structure is removably integrated into the filter basket 31 to facilitate not only manufacturing but also later maintenance or cleaning. Specifically, the shield structure is provided with a caulking groove 320, and the water filtering basket 31 is provided with an insert 313 which can be matched with the caulking groove 320; the insert block 313 is provided with a block 3131, and the connection relationship between the shield structure and the water filtering basket 31 can be reinforced by clamping the block 3131 in the insert groove 320. In addition, the above effects can also be obtained by disposing the caulking groove 320 on the water filtering basket 31 and disposing the insert 313 on the shield structure, which is not described in detail herein.

In a specific application scenario, when the first probe 211 and the second probe 212 are disposed in the lower space 1102, the first probe 211 and the second probe 212 can be isolated by the water filtering basket 31, so as to avoid a closed loop path of interference properties. However, if there is too much trash mixed in the water liquid, the trash may completely block the water filtering basket 31, so that the water liquid subsequently 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 filled with the water and the impurities, the first and second probes 211 and 212 may not contact the water, and the water level may not be accurately recognized.

Referring to fig. 11, the first probe 211 and the second probe 212 are disposed in the upper space 1101, a protective shell 4 is disposed outside the first probe 211 and/or the second probe 212, a water inlet 40 is opened on the protective shell 4, and water can flow through the water inlet 40 and electrically 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 diversion port 40 to be in contact with the probe part, namely the protective shell 4 can separate and block the conductive impurities, so that not only is a closed loop passage with interference property avoided, but also even if the water filtering basket 31 is blocked, the water liquid can still contact the first probe 211 and the second probe 212 along with the rise of the water level.

The following description will be given taking an example in which the sheath 4 is provided outside the first probe 211: referring to fig. 12, as an embodiment of the present application, the water guide opening 40 includes a bottom water guide opening 41, and the bottom water guide opening 41 is disposed at the bottom of the protective shell 4; thus, along with the increase of the water level, the water can contact the first probe 211 from the bottom, and can play a better blocking effect at the side part thereof.

Referring to fig. 13, further, a space for accommodating the first probe 211 is formed in the protective case 4, and the first probe 211 is entirely disposed in the protective case 4; that is, the length of the space is not less than the length of the first probe 211, so that the risk of the first probe 211 contacting conductive impurities can be further reduced. Preferably, the distance h between the lower end of the first probe 211 and the lower end of the sheath 4 is 3mm or more, so that even if the conductive foreign matter touches the lower end of the sheath, a certain distance is left from the first probe 211.

Still further, the first probe 211 has a length g, which is not less than 8mm. It can be appreciated that the first probe 211 has a limited bottom area and is easily adhered to the attachment in the contaminated water, and if only the bottom surface of the first probe 211 is contacted with the water, the detection is easily misaligned; therefore, the length of the first probe is not less than 8mm, and the length of the first probe contacting with the water liquid is not less than 8mm, so that the accuracy of water level detection can be ensured. Based on the above arrangement, a gap is formed between the first probe 211 and the casing 4 for allowing water to flow; when the gap is small, the foreign matter is easy to be inserted, and the cleaning by a user is inconvenient, so that the minimum distance k (refer to fig. 14) between the outer surface of the first probe 211 and the inner surface of the protective shell 4 is not less than 2mm.

With continued reference to fig. 12 and 13, as another embodiment of the present application, the water catchment 40 includes a side catchment 42, and the side catchment 42 is provided at a side of the casing 4; so, along with the increase of water level, water liquid can follow first probe 211 of lateral contact to can play better fender effect at its bottom. Preferably, the width i of the lateral water diversion opening 42 is set to be more than 3 mm; based on this, can guarantee the area of contact of first probe 211 with water liquid, promote detection sensitivity, can also be convenient for clean the internal surface of protecting shell 4 and/or the surface of first probe 211.

Because the lateral water inlet 42 is arranged at the lateral part of the protective shell 4, the contact length of the first probe and water liquid is not less than 8mm, and the gap between the first probe 211 and the protective shell 4 can be reserved or eliminated. That is, the outer surface of the first probe 211 can be attached to the inner surface of the casing 4, so that the foreign material is prevented from being inserted into the gap, and the portion to be cleaned is omitted. It should be noted that the above-mentioned fitting arrangement can be understood as a basic fitting arrangement, that is, a gap between the outer surface of the first probe 211 and the inner surface of the casing 4 may be zero, or a gap having a small amount and not easy to be inserted with foreign matter, for example, a gap of several tenths of millimeters.

In other embodiments, the catchment 40 may also include both a bottom catchment 41 and a side catchment 42; the bottom water inlet 41 and the side water inlet 42 may inherit the definition in the foregoing embodiments, so as to obtain better detection sensitivity, accuracy and blocking effect.

Referring to fig. 13, as an embodiment in the present application, the distance between the first probe 211 and the second probe 212 is defined to be not less than 30mm; it will be appreciated that the first probe and the second probe each have a central axis with a separation f, the separation f being not less than 30mm. Based on the restriction on the distance between the two probes, the electric conductor is limited to be capable of simultaneously contacting the two probes when the distance reaches more than 30mm, and a closed loop path with interference property is further avoided. However, when the distance between the two probes is too large, undesirable phenomena occur, such as: when water simultaneously contacts the first probe and the second probe, the overlarge distance f can cause overlarge resistance of the water for conducting current, and further the risk of the current of an electric path being too weak or even interrupted can occur; thus, the present application further defines that the first probe 211 is spaced from the second probe 212 by no more than 150mm.

In one embodiment of the present application, the protective shell 4 is connected to the bottom of the insulating layer 23. The first probe 211 is a detecting element capable of directly contacting with water, and the first probe 213 is an electrical conducting element, which does not need to contact with water; if the first probe 213 is exposed, there is a risk that conductive impurities may interfere with the accuracy of the detection; thus, by at least partially isolating the first probe 213 from the root, even if conductive impurities adhere to the insulating layer, they are not electrically conducted with the first probe 213.

Further, the height of the insulating layer is more than 50mm, that is, the wrapping height j of the insulating layer to the first probe 213 is at least 50mm from the joint of the first probe 211 and the first probe 213 to the top; therefore, the conductive impurities can be effectively prevented from being electrically connected with the first probe body. In a preferred embodiment, the length of the first probe 213 is greater than 50mm, and the insulation layer completely surrounds the first probe 213 along the circumferential direction.

As an embodiment of the present application, it is preferable to wrap the first probe body 213 by injection molding, and to integrally injection mold the insulating layer 23 and the protective shell 4, so that the production process can be optimized on the premise of ensuring the structural performance, and the first probe body can be effectively supported and fixed by the injection molding body.

Referring to fig. 5 or 11, the outer surface of the protective shell 4 is substantially in the shape of an inverted conical surface, so that water drops outside the protective shell can be accelerated, and the influence on water level detection is reduced. When the insulating layer 23 and the protective shell 4 are integrally injection-molded, water outside the insulating layer 23 can be influenced to quickly drip; to enhance the dripping effect, at least part of the outer surface defining the insulating layer 23 is also substantially in the form of an inverted cone; preferably, at least a part of the outer surface of the insulating layer 23 and the outer surface of the protective shell 4 are arranged in the same tapered surface.

As can be seen from the foregoing, when the protective shell 4 is disposed on the first probe 211 and the insulating layer is disposed on the first probe body 213, the effect of blocking conductive impurities can be effectively achieved no matter the second probe is completely exposed or the structure identical to that of the first probe is adopted; however, in order to enhance the beneficial effect and to take the aesthetic appearance of the waste water tank into consideration, it is preferable that the second probe has the same structure as the first probe, i.e. the protective shell 4 is arranged outside the second probe head 212, and the second probe body 214 is at least partially provided with an insulating layer.

Referring to fig. 11, as a specific embodiment of the present application, the insulating layer 23 is formed by injection molding integrally with the protective casing 4 and is fixedly connected to the case cover 12, and the second probe and the first probe have the same structure; as known to those skilled in the art, when the insulating layer of the first probe 213 and the insulating layer of the second probe 214 are in contact with the same bridge (e.g., the baffle 122 in fig. 5), even if the insulating layer and/or the bridge itself are not conductive, if water stains are attached to the outer surfaces of the insulating layer and the bridge, current may be conducted on the outer surfaces of the insulating layer and the bridge, which is called a creepage phenomenon.

Based on the principle that the longer the conductor length is and the larger the resistance is, the minimum creepage distance m between the first probe 211 and the second probe 212 is limited to be more than 80 mm; in this way, the influence on the accuracy of water level detection can be reduced by reducing the creepage current between the first probe 211 and the second probe 212.

Referring to fig. 3 and 4, in one embodiment, the waste tank outlet 120 is disposed on the tank cover 12 and has an outlet air intake end 121, and the outlet air intake end 121 is configured at the bottom of the tank cover 12; the fluid channel 111 is substantially arranged along the height direction of the sump, i.e. the sump inlet 1111 is arranged at the bottom of the tank 11; further, the water filtration basket 31 is opened with a passage through-hole 310, and the fluid passage 111 penetrates the water filtration basket 31 from the bottom to the top through the passage through-hole 310, so that the chamber inlet 1112 is disposed in the upper space 1101.

In one embodiment, the inner wall of the housing 11 is provided with a first supporting platform 131, and/or the outer wall of the fluid channel 111 is provided with a second supporting platform 132; after the water filter basket 31 is inserted from the top opening 1103, the downward movement of the water filter basket can be limited by the first support table 131 and/or the second support table 132, so that the upper space 1101 and the lower space 1102 are accurately partitioned.

Further, in the state that the sewage tank is assembled, the shield structure integrated with the water filtering basket 31 abuts against the bottom of the tank cover 12 to limit the upward movement of the water filtering basket 31; that is, when the filter basket 31 and the box cover 12 are both mounted on the box body 11, the shield 32 just covers and buckles the second probe assembly 22. In combination with the downward movement limiting in the above embodiment, the water filtering basket 31 can be clamped in the cavity to prevent the water filtering basket from moving up and down during use, thereby generating noise

In one embodiment, the soil tank is installed to the body from the rear to the front (referring to fig. 3, the front and rear sides of the soil tank may be determined based on the rear side of the cavity portion which is the side where the second probe assembly is provided), and the top surface of the cover 12 is configured as a first coupling surface (not shown) inclined downward from the rear to the front; the first joining surface is provided to be inclined so as to be airtightly joined to the body.

Referring to fig. 6 and 15, the sump inlet 1111 is disposed at the bottom of the tank body 11, and the bottom surface of the tank body 11 is configured as a second coupling surface 14 inclined upward from the rear to the front, which also facilitates the airtight coupling of the sump to the body; wherein the sump inlet 1111 is configured at the second coupling surface 14.

Preferably, the lower part of the second joint surface 14 is provided with a placing seat 15, when the sewage tank is taken down from the machine body, the placing seat 15 can enable the sewage tank to stand on the ground without toppling, so that the subsequent cleaning of the garbage in the sewage tank is facilitated; specifically, the plane of the bottom end of the placing seat 15 is substantially perpendicular to the height direction of the sewage tank.

Further, the placing seat 15 may be configured into a U-shaped structure, the front end of which is configured into the open end thereof; based on this, can enough satisfy the upright requirement of sewage case, can dodge the front side space of sewage case import 1111 again, so do not influence its associative performance with the fuselage. Of course, the placing seat 15 can be configured in other shapes, such as a semi-circle, two straight lines, etc., and can be configured as a plurality of support rods or support plates extending downward from the second combining surface 14; it can satisfy the vertical support sewage case, to the effective requirement of dodging of sewage case import 1111 front side space can.

For the convenience of design and manufacture, the seat 15 is preferably integrally formed with the case 11.

In order to meet the requirement of light weight of the sewage tank and the cleaning equipment, at least part of the placing seat 15 is preferably of a hollow structure, namely, a hollow structure, a groove, a shell extraction structure and other structures commonly used in the field can be adopted.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. A waste tank, comprising:

the water level sensor comprises a box body (11) and a box cover (12) which can be assembled at the top of the box body (11) in a detachable mode, wherein a first probe assembly (21) and a second probe assembly (22) which are used for detecting water level information in the box body are arranged below the box cover (12), and the second probe assembly (22) is located above the first probe assembly (21);

the water filtering device is characterized by further comprising a water filtering basket component (3) arranged in the box body (11), wherein the first probe component (21) and/or the second probe component (22) can be isolated from conductive impurities by the water filtering basket component (3) so as to avoid a closed loop path with interference properties.

2. The waste water tank of claim 1,

the water filtering basket assembly (3) comprises a water filtering basket (31) for filtering water liquid, the water filtering basket (31) divides the chamber of the box body (11) into an upper space (1101) and a lower space (1102); the water filtering basket (31) filters water liquid when the water liquid enters the lower space (1102) from the upper space (1101);

wherein the first probe assembly (21) is arranged in the lower space (1102), the first probe assembly (21) comprising a first probe (211) and a second probe (212);

preferably, a plug-in guiding structure is configured between the water filtering basket (31) and the box body (11), or the inner section of the box body (11) is configured into a special-shaped section, and the plug-in outer surface of the water filtering basket (31) is configured into a profiling structure matched with the special-shaped section;

an inserting and matching guide structure is constructed between the box cover (12) and the box body (11), or the inner section of the box body (11) is constructed into a special-shaped section, and the inserting and matching outer surface of the box cover (12) is constructed into a profiling structure matched with the special-shaped section.

3. The waste water tank of claim 1,

the water filtering basket component (3) comprises a water filtering basket (31) for filtering water liquid and a handle part (32) connected to the top of the water filtering basket (31); the handle part (32) is constructed into a shield structure, a water through hole is constructed on the shield structure, and the shield structure can be covered outside the second probe assembly (22) and used for preventing the second probe assembly (22) from contacting with conductive sundries;

preferably, the shield structure is capable of being combined with a portion of the case lid (12) to form a shield cavity for receiving 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);

preferably, the upper end width of the handle part (32) is larger than the lower end width thereof;

preferably, the handle part (32) is detachably integrated with the water filtering basket (31).

4. The waste water tank as claimed in claim 3,

the tank body (11) is provided with a fluid channel (111) arranged along the height direction of the tank body, one end of the fluid channel (111) is formed into a sewage tank inlet (1111), and the other end is formed into a cavity part inlet (1112);

a first supporting platform (131) is arranged on the inner wall of the box body (11) and/or a second supporting platform (132) is arranged on the outer wall of the fluid channel (111), and the first supporting platform (131) and the second supporting platform (132) are used for limiting the downward movement amount of the water filtering basket (31) relative to the box body (11);

when the water filtering basket (31) and the box cover (12) are installed on the box body (11), the second probe assembly (22) is covered and buckled by the protective cover (32).

5. The waste water tank as claimed in claim 3,

the water filtration basket (31) divides a cavity of the box body (11) into an upper space (1101) and a lower space (1102); the water filtering basket (31) filters water liquid when the water liquid enters the lower space (1102) from the upper space (1101);

wherein the first probe assembly (21) is arranged in the upper space (1101); the first probe assembly (21) comprises a first probe (211) and a second probe (212), a protective shell (4) is arranged on the outer side of the first probe (211), a water diversion port (40) used for separating and blocking conductive impurities is formed in the protective shell (4), and water can flow through the water diversion port (40);

preferably, the outer surface of the protective shell (4) is substantially in the shape of an inverted cone.

6. The waste water tank as claimed in claim 5,

the water inlet (40) comprises a bottom water inlet (41) positioned at the bottom of the protective shell (4) and a side water inlet (42) positioned at the side of the protective shell (4);

the first probe (211) is completely arranged in the protective shell (4), and the length of the first probe (11) which can be contacted with water liquid is not less than 8mm;

preferably, the distance between the lower end of the first probe (211) and the lower end of the protective shell (4) is more than 3 mm;

preferably, the width of the side water diversion port (42) is set to be more than 3 mm;

preferably, the outer surface of the first probe (211) is attached 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 2mm.

7. The wastewater tank according to claim 2 or 5,

a first probe body (213) is electrically connected to the first probe (211), and a second probe body (214) is electrically connected to the second probe (212); the first probe body (213) and the second probe body (214) are connected to the bottom of the box cover (12), and an insulating layer (23) is arranged on the outer sides of the first probe body (213) and the second probe body (214);

preferably, the distance between the first probe (211) and the second probe (221) is 30mm-150mm; the creepage distance between the first probe (211) and the second probe (221) is more than 80 mm;

preferably, the height of the insulating layer is 50mm or more.

8. The waste water tank as claimed in claim 1,

the tank body (11) is provided with a fluid channel (111) arranged along the height direction of the tank body, one end of the fluid channel (111) is formed into a sewage tank inlet (1111), and the sewage tank inlet (1111) is arranged at the bottom of the tank body (11);

the sewage tank is arranged on the machine body from back to front, the top surface of the tank cover (12) is configured into a first combining surface inclined downwards from back to front, and the bottom surface of the tank body (11) is configured into a second combining surface (14) inclined upwards from back to front.

9. The waste water tank of claim 8,

the lower part of the second combining surface (14) is provided with a placing seat (15), and the plane of the bottom end of the placing seat (15) is basically vertical to the height direction of the sewage tank.

10. The waste water tank of claim 9,

the placing seat (15) is constructed into a U-shaped structure, and the front end of the U-shaped structure is configured into the opening end of the U-shaped structure.

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