Sewage tank of scrubber and scrubber

Abstract

The present application relates to the field of cleaning equipment, and provide a kind of sewage tank of scrubber and scrubber, scrubber includes floor brush main body, the sewage tank is arranged on the floor brush main body, the sewage tank includes: shell, the shell is formed for accommodating sewage sewage cavity;Probe for detecting water level, the probe is equipped with two, the probe includes installation end and contact end, the probe is bent and extends from the installation end to the contact end;The installation end of two probe is fixed on the side wall or bottom wall of the shell respectively, and the contact end is located in the sewage cavity for detecting the water level of sewage.The present application can solve the defects that probe structure and installation mode in the prior art have great limitations, and detection reliability is low, realize optimization probe structure and installation mode, expand the application scenario of probe.

Description

TECHNICAL FIELD

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

[0002] In the use process of the scrubber, the sewage tank as a sewage collection component, the real-time and accurate detection of the water level inside is the key to ensure the normal operation of the scrubber, if the full water state cannot be identified in time, it is easy to cause sewage overflow, pollute the cleaned ground or damage the internal components of the machine body, therefore, water level monitoring and alarm triggering need to be realized through the full water detection structure.

[0003] At present, the full water detection methods of the sewage tank of the scrubber mainly include two types: one is the contact detection based on the probe, and the other is the float detection, Hall detection and optical detection. In the detection method of the latter, the detection structure cannot be effective for a long time in the dirty environment, for example, the float is easy to be blocked by the garbage (such as hair and debris) in the sewage, which causes the float to be stuck and fail; the dirty (such as sewage residue and stain deposition) attached to the tank wall of the sewage tank for a long time blocks the optical signal, which causes the optical detection to fail. In comparison, the probe detection method of the former is relatively reliable, but still has the following disadvantages.

[0004] The existing sewage tank is usually arranged on the machine body of the scrubber, the sewage tank adopts a long barrel shape, the probe is fixedly installed on the upper cover of the sewage tank and arranged in the vertical direction from top to bottom, the probe itself is designed as a vertical strip-shaped structure, the probe has a relatively long length, and is only suitable for the long barrel-shaped sewage tank, so that the probe structure and the installation method have great limitations. SUMMARY

[0005] The present application provides a sewage tank of a scrubber and the scrubber, which are used to solve the defects of great limitations of the probe structure and the installation method in the prior art and low detection reliability, realize optimization of the probe structure and the installation method, and expand the application scenarios of the probe.

[0006] The present application provides a sewage tank of a scrubber, the scrubber comprising a brush main body, the sewage tank being arranged on the brush main body, the sewage tank comprising:

[0007] a housing, a sewage cavity for containing sewage being formed in the housing;

[0008] a probe for detecting the water level, two probes being arranged, the probe comprising an installation end and a contact end, the probe extending in a bent manner from the installation end to the contact end;

[0009] the installation ends of the two probes being fixed to the side wall or the bottom wall of the housing respectively, and the contact ends being located in the sewage cavity for detecting the water level of the sewage.

[0010] According to the present invention, a wastewater tank for a floor scrubber has two probes disposed on both sides of the housing along a first direction, and the two probes are offset along a second direction of the housing.

[0011] According to the present invention, a wastewater tank for a floor scrubber has two probes arranged diagonally along the housing.

[0012] According to the present invention, the wastewater tank of a floor scrubber has two probes installed on the bottom wall of the housing;

[0013] Alternatively, both probes may be mounted on the side wall of the housing;

[0014] Alternatively, one of the two probes may be mounted on the bottom wall of the housing, and the other on the side wall of the housing.

[0015] According to the present invention, a wastewater tank for a floor scrubber includes an upper cover and a lower cover, the upper cover being fitted onto the top opening of the lower cover, and the lower cover having a bottom wall and a side wall extending upward from the bottom wall.

[0016] Both probes are mounted on the bottom wall of the lower shell;

[0017] Alternatively, both probes may be mounted on the side wall of the lower shell;

[0018] Alternatively, one of the two probes may be mounted on the bottom wall of the lower housing, and the other on the side wall of the lower housing.

[0019] According to the present invention, a wastewater tank for a floor scrubber includes a probe comprising a first extension having the mounting end and a second extension having the contact end. The second extension extends downward toward the bottom of the housing and is parallel to or perpendicular to the first extension.

[0020] According to the present invention, a wastewater tank for a floor scrubber has an isolation cover fitted around the lower contact end of the second extension section, the isolation cover circumferentially surrounding the contact end, and an opening at the bottom of the isolation cover to communicate with the wastewater chamber.

[0021] According to the present invention, the wastewater tank of a floor scrubber is provided, wherein the isolation cover is a silicone component;

[0022] The bottom of the isolation cover is lower than the contact end;

[0023] The isolation cover has through holes or gaps on its side walls.

[0024] According to the present invention, a wastewater tank for a floor scrubber includes a probe comprising a needle body and an insulating outer shell covering the outside of the needle body, wherein the contact end of the needle body for detecting water level is exposed.

[0025] The insulating outer shell is provided with a mounting part, and the isolation cover is fitted onto the mounting part.

[0026] The present invention also provides a floor scrubbing machine, including a handheld part, a body and a floor brush, wherein the handheld part, the body and the floor brush are connected in sequence, the floor brush includes a floor brush body, and the floor scrubbing machine also includes a wastewater tank as described above, wherein the wastewater tank is disposed on the floor brush body.

[0027] The present invention provides a wastewater tank and a floor scrubber, and provides a detection structure and installation method for the wastewater tank on the floor brush. Unlike the traditional wastewater tank that is set on the machine body, the wastewater tank of the present invention is set on the floor brush. The wastewater tank has a flat structure and a small overall height, which puts forward higher requirements for the structure and installation of the probe. Traditional probes are difficult to apply to this flat wastewater tank.

[0028] The probe of this invention is bent and extended with its mounting end fixed to the side wall or bottom wall of the housing. Compared with the existing long strip probes that are vertically mounted on the top cover of the sewage tank, it can be arranged without relying on the vertical space inside the sewage tank. The bent probe can be adjusted by bending the angle so that the contact end can accurately extend into the target detection position of the sewage cavity. This solves the defect that the existing probes can only be adapted to regular long cylindrical sewage tanks and greatly improves the flexibility of sewage tank structure design.

[0029] The probe can be flexibly positioned by bending it into different shapes, and the probe is directly fixed to the side wall or bottom wall of the housing, which avoids changes in the position of the probe's contact end. For example, when the existing probe is installed on the cover of the sewage tank, the cover may be forgotten to be closed, not installed properly, or may be displaced due to vibration during use, which will cause the contact position of the probe to change and thus affect the reliability of water level detection. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of the sewage tank provided by the present invention;

[0032] Figure 2 This is a cross-sectional schematic diagram of the probe provided by the present invention;

[0033] Figure 3 This is one of the schematic diagrams of the dual-probe layout provided by the present invention;

[0034] Figure 4 This is the second schematic diagram of the dual-probe layout provided by the present invention;

[0035] Figure 5 This is the third schematic diagram of the dual-probe layout provided by the present invention;

[0036] Figure 6 This is the fourth schematic diagram of the dual-probe layout provided by the present invention.

[0037] Figure label:

[0038] 10. Housing; 101. Top cover; 102. Bottom housing; 11. Wastewater chamber; 12. Probe; 121. Mounting end; 122. Contact end; 123. First extension section; 124. Second extension section; 125. Third extension section; 126. Needle body; 127. Insulating outer shell; 128. Mounting part; 13. Insertion post; 14. Sealing ring; 15. Isolation cover; 151. Opening. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0040] In the description of this invention, it should be understood that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0041] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0042] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] The liquid level detection probe of this invention is suitable for the sewage tank on the floor brush and can detect the water level of the sewage tank. Of course, it can also detect when the tank is full. It is also suitable for detecting other flat water tanks, such as detecting the water level of the clean water tank.

[0044] like Figures 1 to 6 As shown, the present invention provides a wastewater tank for a floor scrubber. The floor scrubber includes a floor brush body, and the wastewater tank is disposed on the floor brush body. The wastewater tank includes:

[0045] The housing 10 has a sewage chamber 11 formed inside it for containing sewage;

[0046] The probe 12 for detecting water level is provided in two, each probe 12 including a mounting end 121 and a contact end 122, and the probe 12 extends in a bent manner from the mounting end 121 to the contact end 122.

[0047] The mounting ends 121 of the two probes 12 are respectively fixed to the side wall or bottom wall of the housing 10, and the contact end 122 is located in the sewage chamber 11 for detecting the water level of the sewage.

[0048] Specifically, the wastewater tank needs to match the shape of the floor brush, adopting a flat structure. Mounting the wastewater tank on the brush allows for more space within the machine body to accommodate other structural elements or reduce its overall size. Furthermore, the reduced height of the wastewater tank from the ground allows for a closer weight distribution, lowering the overall center of gravity and reducing the effort required to push the machine. This also prevents the risk of swaying or tipping due to instability during operation, improving safety. The closer proximity of the wastewater tank to the ground significantly shortens the connection path between the suction components and the tank, facilitating faster and more thorough collection of wastewater and preventing issues like wastewater residue or delayed collection caused by longer paths.

[0049] like Figure 2As shown, the probe 12 is entirely located in the sewage chamber 11. Its contact end 122 is provided with a water level detection contact, and the part of the mounting end 121 that extends out of the housing 10 is provided with a signal transmission contact. The signal transmission contact is electrically connected to the external detection structure. The liquid level in the sewage chamber 11 increases from bottom to top. When the liquid level rises to contact the water level detection contact, the signal transmission contact is connected to the external detection structure, triggering a full water alarm.

[0050] like Figure 2 As shown, taking the probe 12 installed on the bottom wall of the housing 10 as an example, the bottom wall of the housing 10 is provided with an upwardly protruding insertion post 13, and the mounting end 121 is inserted into the insertion post 13 for fixation. Furthermore, in order to improve the sealing performance and prevent leakage, a sealing ring 14 is provided between the insertion post 13 and the mounting end 121, thereby ensuring the sealing performance of the sewage tank.

[0051] In existing wastewater tanks, two probes are symmetrically positioned. Wastewater enters the tank through a suction device, and the liquid level is prone to surges or continuous fluctuations due to the suction impact. Furthermore, the liquid level fluctuates during the back-and-forth pushing and pulling motion of the floor scrubber. These situations cause a brief rise in the liquid level. When the two probes are positioned on the same water level line (extending along the left-right direction of the floor brush), the liquid level may briefly rise and then simultaneously contact the contact points of both probes (before the tank is actually full), falsely triggering the conduction signal and causing a false full alarm. This disrupts the continuous cleaning operation of the floor scrubber and increases the frequency of user intervention. To address this false alarm problem, this invention optimizes the position of the two probes to reduce the risk of false alarms.

[0052] In a preferred embodiment of the present invention, the two probes 12 are disposed on both sides of the housing 10 along the first direction, and the two probes 12 are staggered along the second direction of the housing 10.

[0053] The first direction A is the left-right direction (i.e., the length direction) of the housing 10 or the floor brush, and the second direction B is the front-back direction (i.e., the width direction) of the housing 10 or the floor brush. When the floor scrubber sucks in sewage or is used in a push-pull motion, the liquid surface in the sewage tank will surge or fluctuate (the surge will mostly cause a momentary bulge in the liquid surface along the front-back direction of the housing 10). If the two probes 12 are aligned in the front-back direction, the surge can easily submerge the contact ends 122 of the two probes 12 at the same time, causing the circuit to mis-conduct. However, after the two probes 12 of the present invention are staggered in the front-back direction, the surge can only briefly touch the contact end 122 of one of the probes 12, and cannot make both contact ends 122 contact the sewage at the same time. Structurally, this avoids the core triggering condition of the simultaneous conduction of the two probes 12, which is a false alarm, and can greatly reduce the probability of false alarm caused by momentary surge.

[0054] like Figures 3 to 6As shown, the two probes 12 are located on the left and right sides of the housing 10 (first direction A) and are staggered in the front-back direction (second direction B), forming an asymmetrical detection layout that is separated to the left and right and staggered to the front and back. This layout places the two contact ends 122 in different spatial positions within the sewage chamber 11, making it difficult for liquid surface fluctuations (such as local eddies or surges) to affect the two staggered contact ends 122 simultaneously, thereby improving the accuracy of water full detection.

[0055] In some embodiments, the two probes 12 are arranged along the diagonal of the housing 10. Specifically, the two probes 12 are located on the diagonal, either at the two furthest ends of the diagonal or at any position on the diagonal (ensuring that the two probes 12 are located on both sides of the center of the diagonal).

[0056] This embodiment maximizes the spatial distance between the contact ends 122 of the two probes 12. The surge generated by the floor scrubber sucking in sewage is mostly a local, unidirectional, instantaneous liquid surface bulge (such as a small fluctuation along the front-back direction), and its coverage is limited, making it difficult to reach the contact ends 122 on both sides of the diagonal at the same time. Even if the surge amplitude is large, it can only briefly touch one of the contact ends 122, and cannot make the two contact ends 122 contact with sewage at the same time. Structurally, it completely cuts off the false alarm triggering condition of the synchronous conduction of the two probes 12, and improves the resistance to surge interference.

[0057] For irregularly shaped wastewater chambers 11 designed due to space limitations of the floor scrubber brush (such as irregular rectangles or chambers with local protrusions / recesses), diagonal arrangement can utilize the diagonal space of the chamber to flexibly arrange two probes 12, which can adapt to irregular structures while maintaining the ability to resist false alarms.

[0058] Based on the above embodiments, the two probes 12 can be installed in various ways on the housing 10, and any of the following methods can be adopted.

[0059] In one embodiment, both probes 12 are mounted on the bottom wall of the housing 10. For example... Figure 3 As shown, the mounting ends 121 of both probes 12 are fixed to the bottom wall of the housing 10, and the probes 12 extend in a U-shape. The U-shaped structure can utilize the space of the bottom wall to achieve low-position installation and lifting of the contact end 122. Even if the sewage tank has a shallow cavity irregular structure, the contact end 122 can accurately reach the water full detection position without relying on the height of the side wall.

[0060] In another embodiment, both probes 12 are mounted on the sidewall of the housing 10. For example... Figure 4 As shown, the mounting ends 121 of the two probes 12 are fixed to the side wall of the housing 10, and the probes 12 extend in an L-shape.

[0061] In other embodiments, such as Figure 5 orFigure 6 As shown, one of the two probes 12 is mounted on the bottom wall of the housing 10 and extends in a U-shape, while the other is mounted on the side wall of the housing 10 and extends in an L-shape.

[0062] Furthermore, to facilitate the installation of the probe 12, the housing 10 can be formed by splicing two parts, making it easy to disassemble the housing 10 for probe 12 installation. In some embodiments, such as Figure 1 As shown, the housing 10 includes an upper cover 101 and a lower cover 102. The upper cover 101 is fitted over the top opening of the lower cover 102. The lower cover 102 has a bottom wall and side walls extending upward from the bottom wall, the side walls having a certain height. The upper cover 101 and the lower cover 102 are detachably installed, facilitating the removal of the upper cover 101 for installing the probe 12 or for emptying wastewater. A certain space is formed inside the lower cover 102 to accommodate wastewater. The lower cover 102 can have a standard or irregular shape to match the installation of the floor brush.

[0063] When the probe 12 is installed on the bottom wall of the housing 10, it can be installed on the bottom wall of the lower housing 102; when the probe 12 is installed on the side wall of the housing 10, it can be installed on the side wall of the lower housing 102. For example, the probe 12 adopts an L-shaped structure, extends laterally along the side wall and turns into the cavity. The probe 12 can be fixed at a higher position on the side wall to avoid the contact end 122 of the probe 12 being too low, so that the sewage tank can hold more sewage before triggering the full water alarm, thereby improving the space utilization of the sewage tank.

[0064] Specifically, in one embodiment, such as Figure 3 As shown, both probes 12 are mounted on the bottom wall of the lower housing 102. In another embodiment, as... Figure 4 As shown, both probes 12 are mounted on the side wall of the lower housing 102. In other embodiments, such as Figure 5 or Figure 6 As shown, one of the two probes 12 is mounted on the bottom wall of the lower shell 102, and the other is mounted on the side wall of the lower shell 102.

[0065] It is understood that the structure of the housing 10 is not limited to the above-described form. The housing 10 may also include an upper housing and a lower housing, with both the upper and lower housings having a certain height on their side walls. When the probe 12 is installed on the side wall of the housing 10, it may also be installed on the side wall of the upper housing. The two probes 12 may be located on the same component or on the upper and lower housings respectively.

[0066] Regardless of whether the housing 10 includes an upper cover 101 and a lower cover 102, or whether the housing 10 includes an upper cover and a lower cover, preferably, both probes 12 are disposed on the lower cover 102 or the lower cover. Taking the probes 12 disposed on the lower cover 102 as an example, by disposing of the probes 12 on the lower cover 102, the circuit components connected to the probes 12 are also disposed on the lower cover 102, and the upper cover 101 does not carry electricity. On the one hand, the upper cover 101 can form a simple appearance, avoiding affecting aesthetics. On the other hand, the mounting end 121 of the probes 12 is fixed on the bottom wall or side wall of the lower cover 102. Only an external detection electrode needs to be disposed at the corresponding position on the bottom wall or side wall of the lower cover 102, so that the signal transmission contact of the probes 12 can be connected to the external detection electrode. This design offers several advantages. First, it makes cleaning the non-electrical cover 101 easier, eliminating the risk of touching live parts during routine cleaning and reducing potential safety hazards. Second, as the cover 101 is frequently disassembled (e.g., when emptying wastewater), repeated disassembly and reassembly could easily lead to wire breakage, electrode loosening, and circuit failure if it integrated live parts or wiring. By eliminating any electrical components or wiring on the cover 101, this risk is completely avoided. Users will not come into contact with or interfere with any circuit structure when disassembling the cover 101, improving reliability and safety. Third, the probe 12 connects to the external detection electrode via a short-distance contact on the lower shell 102, eliminating the need for wires to run from the body to the cover as with traditional cover-mounted probes. This simplifies the electrical connection structure and path. During maintenance, the probe 12 can be accessed simply by removing the cover 101, without disassembling complex wiring structures, facilitating probe 12 inspection or replacement and reducing maintenance costs.

[0067] By placing the probe 12 on the lower housing 102, this invention avoids damage to the probe 12 due to frequent disassembly and reassembly of the upper cover 101, thus extending its lifespan. The probe 12 and associated circuit components are integrated into the lower housing 102, with no circuit connection to the upper cover 101. Disassembly and reassembly of the upper cover 101 will not affect the connection structure of the probe 12, ensuring stable and reliable signal transmission. By simplifying the structure of the upper cover 101, users do not need to worry about touching the probe 12 when disassembling, assembling, or handling the upper cover 101, making operation smoother and safer. It also reduces the interference of accidental user contact with the probe 12's detection accuracy.

[0068] Based on the above implementation, the probe 12 can adopt various bending shapes to match different installation positions, thereby optimizing the shape and installation flexibility of the probe 12.

[0069] The probe 12 includes a first extension 123 having the mounting end 121 and a second extension 124 having the contact end 122, the second extension 124 extending downward toward the bottom of the housing 10.

[0070] likeFigure 2 As shown, when probe 12 has a U-shaped structure, probe 12 also includes an arc-shaped third extension 125 for connecting the first extension 123 and the second extension 124. Both the first extension 123 and the second extension 124 extend vertically, and the second extension 124 is parallel to the first extension 123. It can be understood that in other examples, the first extension 123 extends vertically, and the second extension 124 may also extend at an angle.

[0071] When the probe 12 has an L-shaped structure, the first extension segment 123 extends laterally, and the second extension segment 124 extends vertically, perpendicular to the first extension segment 123. It is understood that in other examples, the second extension segment 124 may also extend at an angle.

[0072] Furthermore, when the probe 12 has a U-shaped structure, the third extension segment 125 can extend along the left-right direction of the housing 10, or the third extension segment 125 can extend along the front-back direction of the housing 10, or the third extension segment 125 can extend obliquely (between the front-back and left-right directions) to optimize the spatial distance between the contact ends 122 of the two probes 12. For example, as Figure 3 As shown, the upper probe 12 has its third extension 125 extending obliquely, and the contact end 122 of the probe 12 faces obliquely forward. The lower probe 12 has its third extension 125 extending along the left and right direction of the housing 10, and the contact end 122 of the probe 12 faces the opposite side wall.

[0073] When both probes 12 are U-shaped probes, the third extension segments 125 of the two probes 12 can extend in the same or different directions, and the contact ends 122 of the two probes 12 can face in the same or different directions, thereby optimizing the spatial distance between the contact ends 122 of the two probes 12. When one probe 12 is a U-shaped probe and the other probe 12 is an L-shaped probe, the extension direction of the third extension segment 125 of the U-shaped probe and the orientation of the contact ends 122 of the probe 12 can be flexibly set, thereby optimizing the spatial distance between the contact ends 122 of the two probes 12.

[0074] The shape of probe 12 is not limited to U-shape or L-shape. It can also be bent into other shapes according to the placement location, height requirements, etc. For example, probe 12 can first extend horizontally along the side wall, then extend upward, and then turn downward.

[0075] Based on the above embodiment, an isolation cover 15 is provided on the outer side of the lower contact end 122 of the second extension section 124. The isolation cover 15 surrounds the contact end 122 in the circumferential direction, and the bottom of the isolation cover 15 is provided with an opening 151 to communicate with the sewage chamber 11.

[0076] like Figure 2As shown, by setting up an isolation cover 15, which surrounds the contact end 122 circumferentially, leaving only the bottom opening 151 connected to the sewage chamber 11, a one-way detection channel is formed where only the water flow below the bottom opening 151 can reach the contact end. When the floor scrubber is working, the inner wall of the sewage chamber 11 is prone to generating a water film that climbs along the wall, lateral splashing water when sewage is sucked in, or lateral water flow generated by local vortices. These water flows (all of which are causes of false alarms) are blocked by the circumferential sidewall of the isolation cover 15 and cannot contact the contact end 122. Structurally, this accurately filters out the water flow that enters from the bottom opening 151 when the actual water level rises, avoiding misleading detection caused by non-target water flows. The surge generated by sewage suction is mostly a lateral or oblique impact. The circumferential sidewall of the isolation cover 15 can directly block the lateral impact force of the surge, preventing the surge from instantly engulfing the contact end 122.

[0077] When the sewage tank is truly full, the liquid level will rise steadily from bottom to top, gradually filling the interior of the isolation cover 15 through the bottom opening 151, ensuring stable contact between the contact end 122 and the sewage, ensuring normal circuit conduction, and triggering the true full water alarm.

[0078] Furthermore, the isolation cover 15 has through holes or gaps on its sidewalls. When the liquid level rises to the opening 151, this prevents the formation of a water film due to excessive air pressure inside the isolation cover 15, which could cause the water full detection to fail. Preferably, the through holes or gaps are located close to the opening 151, allowing air pressure balancing to be initiated as soon as the liquid level contacts the opening 151. This eliminates resistance and allows the liquid level to rise synchronously with the overall water level of the sewage chamber 11, ensuring that the contact end 122 accurately triggers the detection at the preset water full position without delay or failure.

[0079] Furthermore, the bottom of the isolation cover 15 is lower than the contact end 122, and the through hole or gap is set close to the opening 151. It can only participate in the air pressure balance when the liquid level rises to near the opening 151, and will not allow lateral surges or water flowing up the wall to enter the cover through the through hole / gap and come into contact with the contact end 122. This preserves the core function of the isolation cover 15 in blocking non-target water flow and preventing false alarms.

[0080] The isolation hood 15 can be equipped with only through holes, only gaps, or both, with the number and location determined according to actual needs. By controlling the size of the through holes or gaps, only airflow is allowed, while large amounts of sewage are prevented from entering, thus avoiding the introduction of new false alarm risks due to through holes / gaps, achieving both air pressure balance and false alarm resistance.

[0081] Furthermore, the inner diameter of the isolation cover 15 increases from top to bottom, forming a funnel-shaped structure that is narrow at the top and wide at the bottom. When the liquid level rises to the bottom opening 151 of the isolation cover 15, the sewage can flow smoothly into the cover along the inclined inner wall. The funnel-shaped structure can guide the water flow to the contact end 122, ensuring that the liquid level stably covers the contact end 122 when the cover is full, rather than accumulating locally inside the cover, further reducing detection deviations caused by uneven water flow distribution. Moreover, the narrow-at-the-top and wide-at-the-bottom structure can expand the lower space inside the cover, making it easier for air inside the cover to flow to the bottom when the liquid level rises, and to be quickly discharged through the through holes / gap, avoiding the formation of high pressure due to air stagnation in the upper part (narrow diameter area) of the cover.

[0082] The isolation cover 15 can be made of silicone. Silicone has excellent elasticity and deformation capacity, and when installed, it can fit tightly to the relevant parts of the probe 12, preventing lateral water flow (such as surges or water films along the wall) from seeping into the isolation cover 15 and contacting the probe 12 due to installation gaps, thus enhancing the anti-false alarm capability. Moreover, when the floor scrubber is working, the vibration of the floor brush can easily cause the probe 12 to collide and rub against impurities (such as debris and hair) in the wastewater tank. The soft texture of silicone can wrap around the contact end 122 to form a buffer layer, preventing the probe 12 (if made of metal) from being scratched or deformed by vibration and impurity impact, thus extending the service life of the probe 12.

[0083] Furthermore, the probe 12 includes a needle body 126 and an insulating shell 127 surrounding the needle body 126, with the contact end 122 for detecting water level exposed. The needle body 126 is bent into a certain shape from the first extension 123 to the second extension 124. The needle body 126 can be made of metal or conductive special plastic, and can be cylindrical or flat, depending on actual needs. The insulating shell 127 covers most of the area of ​​the needle body 126, with the water level detection contact and signal transmission contact of the needle body 126 exposed to meet the conditions for forming a conductive circuit. When the insulating shell 127 is installed with the insertion post 13 on the housing 10 at the position corresponding to the mounting end 121, a sealing ring 14 can be fitted on the insulating shell 127 to ensure the sealing at that position.

[0084] Furthermore, such as Figure 2 As shown, the insulating housing 127 is provided with a mounting portion 128, and the isolation cover 15 is fitted onto the mounting portion 128. Thus, the insulating housing 127 serves both as insulation and protection, and also provides a mounting point for the isolation cover 15, making the overall structure of the probe 12 compact. Precise fixation by the isolation cover 15 prevents false alarm failure caused by displacement. Furthermore, the design of the mounting portion 128 allows for quick and easy mounting of the isolation cover 15 without complex positioning, reducing production assembly difficulty. During maintenance, only the isolation cover 15 needs to be removed from the mounting portion 128 to clean the contact end 122 of the probe 12, without disassembling the entire probe 12, improving maintenance convenience.

[0085] The isolation cover 15 and the mounting part 128 can be assembled through a snap-fit ​​structure, a threaded fit structure, etc., to achieve a secure fixation while facilitating installation and disassembly.

[0086] The present invention also provides a floor scrubbing machine, including a handheld part, a body, and a floor brush, wherein the handheld part, the body, and the floor brush are connected in sequence, the floor brush includes a floor brush body, and the floor scrubbing machine further includes a wastewater tank disposed on the floor brush body. The wastewater tank adopts the wastewater tank described in the above embodiments and examples; therefore, the floor scrubbing machine possesses all the beneficial technical effects of the above embodiments and examples, which will not be elaborated further here.

[0087] The wastewater tank of the present invention is integrated on the floor brush and is designed as a flat structure with low height and larger horizontal dimensions. The long stroke design of the traditional probe 12 will cause its contact end 122 to exceed the range of the wastewater chamber 11 and cannot be installed or will be completely submerged by wastewater and lose its detection significance. Therefore, it cannot be applied to the wastewater tank of the present invention.

[0088] The probe 12 of this invention adopts a bent design, and the mounting end 121 can be flexibly fixed to the side wall or bottom wall of the sewage tank without relying on vertical space. For irregular shapes such as local depressions, inclined side walls, and internal protrusions that may exist in flat structures, the contact end 122 can be accurately positioned at the water full detection position (such as the highest liquid level in a flat cavity) by adjusting the bending angle and extension direction of the probe 12. Even if the internal space of the sewage tank is designed to be extremely irregular due to the integration requirements of the floor brush, the probe 12 can still avoid obstacles through a flexible non-vertical installation path, ensuring that the detection point matches the actual water full level, thus solving the problem that traditional probes are only suitable for long cylindrical water tanks. By optimizing the layout of the two probes 12 and using staggered or diagonal arrangement, false alarms can be avoided and the water full can be accurately determined regardless of the usage state of the floor scrubber (such as violent surges caused by rapid movement or liquid level shift during inclined cleaning), thereby improving the reliability of detection.

[0089] The present invention provides a wastewater tank and a floor scrubber, and provides a detection structure and installation method for the wastewater tank on the floor brush. Unlike the traditional wastewater tank that is set on the machine body, the wastewater tank of the present invention is set on the floor brush. The wastewater tank has a flat structure and a small overall height. This places higher demands on the structure and installation of the probe 12. The traditional probe 12 is difficult to apply to this flat wastewater tank.

[0090] The probe 12 of the present invention is bent and extended, and the mounting end 121 is fixed to the side wall or bottom wall of the housing 10. Compared with the existing long strip probes that are vertically mounted on the cover of the sewage tank, it can be arranged without relying on the vertical space inside the sewage tank. The bent probe 12 can be adjusted by adjusting the bending angle so that the contact end 122 can be accurately inserted into the target detection position of the sewage cavity 11. This solves the defect that the existing probe 12 can only be adapted to regular long cylindrical sewage tanks, and greatly improves the flexibility of sewage tank structure design.

[0091] The probe 12 can be flexibly positioned by bending it into different shapes. Moreover, the probe 12 is directly fixed to the side wall or bottom wall of the housing 10, which avoids changes in the position of the contact end 122 of the probe 12. For example, when the existing probe is installed on the cover of the sewage tank, the cover of the sewage tank may be forgotten to be closed, not installed properly, or may be displaced due to vibration during use, which will cause the contact position of the probe to change and thus affect the reliability of water level detection.

[0092] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wastewater tank for a floor scrubber, the floor scrubber comprising a floor brush body, characterized in that, The wastewater tank is mounted on the main body of the floor brush and has a flat structure. The wastewater tank includes: A housing, wherein a sewage cavity is formed within the housing for containing sewage; A probe for detecting water level, comprising two probes, each probe including a mounting end and a contact end, the probe extending in a bent manner from the mounting end to the contact end; The mounting ends of the two probes are respectively fixed to the side wall or bottom wall of the housing, and the contact end is located inside the sewage chamber for detecting the water level of the sewage; The two probes are disposed on both sides of the housing along a first direction, and the two probes are staggered along a second direction of the housing. The first direction is the left-right direction of the floor brush, and the second direction is the front-back direction of the floor brush.

2. The wastewater tank of the floor scrubber according to claim 1, characterized in that, The two probes are arranged diagonally along the housing.

3. The wastewater tank of the floor scrubber according to claim 1, characterized in that, Both probes are mounted on the bottom wall of the housing; Alternatively, both probes may be mounted on the side wall of the housing; Alternatively, one of the two probes may be mounted on the bottom wall of the housing, and the other on the side wall of the housing.

4. The wastewater tank of the floor scrubber according to claim 1 or 2, characterized in that, The housing includes an upper cover and a lower shell, the upper cover being fitted onto the top opening of the lower shell, and the lower shell having a bottom wall and side walls extending upward from the bottom wall; Both probes are mounted on the bottom wall of the lower shell; Alternatively, both probes may be mounted on the side wall of the lower shell; Alternatively, one of the two probes may be mounted on the bottom wall of the lower housing, and the other on the side wall of the lower housing.

5. The wastewater tank of the floor scrubber according to claim 4, characterized in that, The probe includes a first extension having the mounting end and a second extension having the contact end. The second extension extends downward toward the bottom of the housing. The second extension is parallel to the first extension or perpendicular to the first extension.

6. The wastewater tank of the floor scrubber according to claim 5, characterized in that, An isolation cover is fitted around the lower contact end of the second extension section, the isolation cover is circumferentially surrounding the contact end, and the bottom of the isolation cover is provided with an opening to communicate with the sewage chamber.

7. The wastewater tank of the floor scrubber according to claim 6, characterized in that, The isolation cover is made of silicone. The bottom of the isolation cover is lower than the contact end; The isolation cover has through holes or gaps on its side walls.

8. The wastewater tank of the floor scrubber according to claim 6, characterized in that, The probe includes a needle body and an insulating outer shell wrapped around the outside of the needle body, with the contact end of the needle body for detecting water level exposed. The insulating outer shell is provided with a mounting part, and the isolation cover is fitted onto the mounting part.

9. A floor scrubbing machine, comprising a handheld unit, a body, and a floor brush, wherein the handheld unit, the body, and the floor brush are connected sequentially, and the floor brush comprises a brush body, characterized in that, The floor scrubber also includes a wastewater tank as described in any one of claims 1-8, the wastewater tank being disposed on the floor brush body.

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