A cleaning machine and a cleaning method thereof

Abstract

The present invention discloses a cleaning machine and a cleaning method thereof, wherein the cleaning machine comprises: a machine body, a liquid storage chamber for storing cleaning liquid and a waste liquid chamber for storing recycled sewage built in the machine body, a spraying system, a scrubbing system, a vacuum adsorption system and a drying system are sequentially arranged on the bottom side of the machine body along the front-back direction thereof; wherein a circulation system is also arranged in the machine body, and the circulation system comprises a first extraction device connected between the liquid storage chamber and the waste liquid chamber, and the first extraction device is used to extract the cleaning liquid component in the sewage in the waste liquid chamber and transport it to the liquid storage chamber. The cleaning machine forms a complete cleaning process by combining the spraying system, the scrubbing system, the vacuum adsorption system and the drying system, thereby improving the cleaning efficiency, reducing the waste of cleaning liquid by recycling, purifying and reusing the waste liquid through the circulation system, and reducing the consumption of cleaning liquid due to the recycling and reusing of the cleaning liquid, thereby reducing the operating cost.

Description

Technical Field

[0001] The present invention relates to the technical field of cleaning machines, and in particular to a cleaning machine and a cleaning method thereof. Background Art

[0002] As an efficient cleaning equipment, floor cleaning machines have been widely used in various places. Most of the existing floor cleaning machines have basic functions such as spraying cleaning liquid and mopping the floor. These devices are usually driven by a motor to rub the ground with a roller brush to clean the ground. The cleaning liquid is supplied from a water tank and sprayed evenly on the ground through a nozzle. Then the roller brush wipes the ground, and the vacuum motor generates a high-speed airflow to suck sewage and garbage into the sewage tank, thereby separating garbage from sewage.

[0003] Although the existing floor cleaning machines have significantly improved their cleaning efficiency and functions, they still have some obvious defects. Specifically, the cleaning fluid usage efficiency of the existing floor cleaning machines is low. After most of the cleaning fluid is sprayed on the ground, only a small part of it is actually involved in the cleaning process. The rest is not effectively utilized and is recovered by the vacuum adsorption system along with the sewage, and finally discharged to the external environment, resulting in a waste of cleaning fluid. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a cleaning machine and a cleaning method thereof to solve the problem that the cleaning fluid utilization efficiency of the existing floor cleaning machine is low. After most of the cleaning fluid is sprayed onto the ground, only a small part of it is actually involved in the cleaning process, and the rest is not effectively utilized and is recovered by the vacuum adsorption system together with the sewage, and finally discharged into the external environment, resulting in a technical problem of waste of cleaning fluid.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] In a first aspect, an embodiment of the present invention provides a cleaning machine, comprising: a machine body, wherein the machine body is provided with a liquid storage chamber for storing cleaning liquid and a waste liquid chamber for storing recycled sewage, and a bottom side of the machine body is provided with a spraying system, a scrubbing system, a vacuum adsorption system and a drying system in sequence along the front-rear direction thereof, wherein the spraying system is connected to the liquid storage chamber and is used to spray the cleaning liquid in the liquid storage chamber onto the ground, the scrubbing system is used to rub and clean the ground, the vacuum adsorption system is connected to the waste liquid chamber and is used to suck the sewage on the ground into the waste liquid chamber, and the drying system is used to dry the ground;

[0007] Among them, a circulation system is also arranged in the body, and the circulation system includes a first extraction device connected between the liquid storage chamber and the waste liquid chamber, and the first extraction device is used to extract the cleaning liquid component in the sewage in the waste liquid chamber and transport it to the liquid storage chamber.

[0008] Furthermore, the liquid storage chamber is divided into a main chamber, an auxiliary chamber and a liquid outlet chamber by a partition, the main chamber is connected to the liquid outlet chamber by a first pipeline, and a first solenoid valve and a first pump are successively arranged in the first pipeline from the main chamber to the liquid outlet chamber, the first solenoid valve is used to open or close the pipeline from the main chamber to the first pump, and the first pump is used to pump the liquid in the main chamber to the liquid outlet chamber; the auxiliary chamber is connected to the liquid outlet chamber by a second pipeline, and a second solenoid valve and a second pump are successively arranged in the second pipeline from the auxiliary chamber to the liquid outlet chamber, the second solenoid valve is used to open or close the pipeline from the auxiliary chamber to the second pump, and the second pump is used to pump the liquid in the auxiliary chamber to the liquid outlet chamber.

[0009] Furthermore, a filtering system is provided between the vacuum adsorption system and the waste liquid chamber, the filtering system comprising a primary filtering device and a secondary filtering device, a plurality of filtering screens are arranged in sequence along the liquid flow direction inside the primary filtering device, and an activated carbon adsorbent is filled inside the secondary filtering device;

[0010] The liquid inlet of the first extraction device is connected to the waste liquid chamber through a third pipeline, and the liquid outlet of the first extraction device is connected to the auxiliary chamber. A third solenoid valve and a third pump are successively arranged in the third pipeline from the waste liquid chamber to the first extraction device. The third solenoid valve is used to open or close the pipeline from the waste liquid chamber to the third pump. The third pump is used to pump the liquid in the waste liquid chamber to the first extraction device. The first extraction device is used to receive the sewage in the waste liquid chamber and transport the cleaning liquid components obtained after extraction to the auxiliary chamber.

[0011] Furthermore, the circulation system also includes a second extraction device, the liquid inlet of the second extraction device is connected to the auxiliary chamber through a fourth pipeline, the liquid outlet of the second extraction device is connected to the auxiliary chamber through a fifth pipeline, and a fourth solenoid valve and a fourth pump are successively arranged in the fourth pipeline from the auxiliary chamber to the second extraction device. The fourth solenoid valve is used to open or close the pipeline from the auxiliary chamber to the second extraction device, the fourth pump is used to pump the liquid in the auxiliary chamber to the second extraction device, and the second extraction device is used to receive the liquid in the auxiliary chamber and transport it to the auxiliary chamber after extraction.

[0012] Furthermore, a first liquid level sensor is arranged in the main cavity, a second liquid level sensor is arranged in the auxiliary cavity, a third liquid level sensor is arranged in the liquid outlet cavity, and a fourth liquid level sensor is arranged in the waste liquid cavity; wherein a conductivity sensor is also arranged in the auxiliary cavity.

[0013] In a second aspect, an embodiment of the present invention provides a cleaning method, which is applied to the cleaning machine as described above, and comprises the following steps:

[0014] Starting the spraying system and controlling the spraying system to spray the cleaning liquid in the liquid storage chamber onto the ground;

[0015] Starting the scrubbing system and controlling the scrubbing system to rub against the ground to clean the ground;

[0016] Starting the vacuum adsorption system and controlling the vacuum adsorption system to suck the sewage on the ground into the waste liquid chamber;

[0017] Starting the drying system and controlling the drying system to blow air toward the ground to dry the ground;

[0018] The circulation system is started to control the first extraction device to extract the cleaning liquid component in the sewage in the waste liquid chamber and transport it to the liquid storage chamber.

[0019] Furthermore, the starting of the spraying system and controlling the spraying system to spray the cleaning liquid in the liquid storage chamber onto the ground include the following steps:

[0020] Control the first solenoid valve to conduct the first pipeline, so that the first pump pumps the liquid in the main chamber to the liquid outlet chamber;

[0021] The second solenoid valve is controlled to conduct the second pipeline, and the second pump draws the liquid in the auxiliary chamber to the liquid outlet chamber.

[0022] Furthermore, the controlling the first extraction device to extract the cleaning liquid component from the sewage in the waste liquid chamber and transport it to the liquid storage chamber includes the following steps:

[0023] The first extraction device is started, and the third solenoid valve is controlled to connect the third pipeline. The third pump draws the liquid in the waste liquid chamber to the first extraction device. The first extraction device performs extraction and purification operations on the liquid therein and delivers the cleaning liquid components after extraction and purification to the auxiliary chamber.

[0024] Furthermore, the cleaning method further comprises the following steps:

[0025] The second extraction device is started, the fourth solenoid valve is controlled to connect the fourth pipeline, and the fourth pump sucks the liquid in the auxiliary chamber to the second extraction device. The second extraction device performs an extraction and purification operation on the liquid therein and delivers the cleaning liquid components after extraction and purification to the auxiliary chamber.

[0026] Furthermore, the cleaning method further comprises the following steps:

[0027] Acquire and analyze the detection signal of the first liquid level sensor to obtain the liquid level height of the main chamber. If the liquid level height of the main chamber is lower than the preset value of the minimum liquid level of the main chamber, control the first solenoid valve to close the first pipeline, and the first pump stops operating;

[0028] Acquire and analyze the detection signal of the second liquid level sensor to obtain the liquid level height of the auxiliary chamber. If the liquid level height of the auxiliary chamber is lower than the preset value of the auxiliary chamber minimum liquid level, control the second solenoid valve to close the second pipeline and stop the second pump. If the liquid level height of the auxiliary chamber is higher than the preset value of the auxiliary chamber maximum liquid level, control the third solenoid valve to close the third pipeline, stop the third pump, and stop the first extraction device.

[0029] Acquire and analyze the detection signal of the third liquid level sensor to obtain the liquid level height of the liquid outlet chamber. If the liquid level height of the liquid outlet chamber is lower than the preset value of the lowest liquid level of the liquid outlet chamber, an alarm is issued; if the liquid level height of the liquid outlet chamber is higher than the preset value of the highest liquid level of the liquid outlet chamber, the first solenoid valve is controlled to close the first pipeline, the second solenoid valve is controlled to close the second pipeline, and the first pump and the second pump are controlled to stop operating;

[0030] The detection signal of the conductivity sensor is acquired and analyzed to obtain the purity of the auxiliary chamber liquid. If the purity of the auxiliary chamber liquid is lower than the preset purity value of the cleaning liquid, the fourth solenoid valve is controlled to connect the fourth pipeline, and the fourth pump sucks the liquid in the auxiliary chamber to the second extraction device. The second extraction device performs an extraction and purification operation on the liquid therein and delivers the extracted and purified liquid to the auxiliary chamber. If the purity of the auxiliary chamber liquid is higher than the preset purity value of the cleaning liquid, the fourth solenoid valve is controlled to close the fourth pipeline, the fourth pump stops operating, and the second extraction device stops operating.

[0031] The cleaning machine of the present invention forms a complete cleaning process by combining a spraying system, a scrubbing system, a vacuum adsorption system and a drying system, thereby improving cleaning efficiency. The waste of cleaning liquid is reduced by recycling, purifying and reusing the waste liquid through the circulation system. Due to the recycling and reuse of the cleaning liquid, the consumption of the cleaning liquid is reduced, thereby reducing the operating cost.

[0032] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A three-dimensional view of a cleaning machine according to an embodiment of the present invention;

[0034] Figure 2 A bottom view of a cleaning machine according to an embodiment of the present invention;

[0035] Figure 3It is a side view of a cleaning machine according to an embodiment of the present invention;

[0036] Figure 4 This is a schematic diagram of the internal structure of a cleaning machine according to an embodiment of the present invention;

[0037] Figure 5 This is a schematic diagram of the distribution structure of the liquid storage chamber and the waste liquid chamber of the cleaning machine according to an embodiment of the present invention;

[0038] Figure 6 It is a schematic diagram of the structure of the extraction unit of the cleaning machine according to an embodiment of the present invention;

[0039] Figure 7 A flow chart of a cleaning method according to an embodiment of the present invention;

[0040] Figure 8 This is a first sub-flow chart of the cleaning method according to an embodiment of the present invention;

[0041] Fig. 9 It is a second sub-flow chart of the cleaning method according to an embodiment of the present invention;

[0042] Fig.10 The third sub-flow chart of the cleaning method according to the embodiment of the present invention;

[0043] Fig.11 This is the fourth sub-flow chart of the cleaning method according to an embodiment of the present invention.

[0044] Description of reference numerals:

[0045] 1. Machine body; 11. Liquid storage chamber; 111. Main chamber; 112. Auxiliary chamber; 1121. Auxiliary water chamber; 1122. Auxiliary agent chamber; 113. Liquid outlet chamber; 12. Waste liquid chamber; 13. Water outlet tank; 14. Ventilation hole; 2. Spraying system; 3. Brushing system; 31. Brush roller; 4. Vacuum adsorption system; 41. Squeegee; 5. Drying system; 51. Fan; 52. Second motor; 6. Circulation system; 61. First extraction device; 62. Second extraction device; 63. Extraction unit; 631. Outer tube; 632. Inner tube; 633. Insert tube; 634. First heating gap; 6341. First heating element; 635. First circulation gap; 636. Second heating gap; 6361. Second heating element; 637. Second circulation gap; 638. Adsorption cotton; 639. Exhaust channel. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0048] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “resin”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, etc., indicating orientations or positional relationships are orientations or positional relationships based on the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0049] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0050] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be connected, detachably connected, or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0052] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0053] Please see attached Figures 1 to 6 The embodiment of the present invention provides a cleaning machine, comprising: a machine body 1, wherein the machine body 1 is provided with a liquid storage chamber 11 for storing cleaning liquid and a waste liquid chamber 12 for storing recycled sewage, and a spraying system 2, a scrubbing system 3, a vacuum adsorption system 4 and a drying system 5 are sequentially arranged on the bottom side of the machine body 1 along the front-to-back direction thereof, the spraying system 2 is connected to the liquid storage chamber 11 and is used to spray the cleaning liquid in the liquid storage chamber 11 onto the ground, the scrubbing system 3 is used to rub and clean the ground, the vacuum adsorption system 4 is connected to the waste liquid chamber 12 and is used to suck the sewage on the ground into the waste liquid chamber 12, and the drying system 5 is used to dry the ground; wherein a circulation system 6 is also arranged in the machine body 1, and the circulation system 6 comprises a first extraction device 61 connected between the liquid storage chamber 11 and the waste liquid chamber 12, and the first extraction device 61 is used to extract the cleaning liquid component in the sewage in the waste liquid chamber 12 and transport it to the liquid storage chamber 11.

[0054] In this embodiment, a cleaning liquid having isopropyl alcohol as its main component may be used, and its boiling point is about 82.5° C. Isopropyl alcohol is an environmentally friendly solvent with good dissolving and cleaning capabilities, and can effectively dissolve or loosen dirt on the ground, so that the scrubbing system 3 can be cleaned more smoothly.

[0055] In one embodiment, the waste liquid chamber 12 is detachably connected to the machine body 1, so that the user can remove the waste liquid chamber 12 from the machine body 1 for cleaning. Furthermore, the machine body 1 is provided with a cavity installation area for installing the waste liquid chamber 12, the cavity installation area corresponds to the bottom surface of the waste liquid chamber 12, and upwardly protruding positioning columns are provided at the four corners of the cavity installation area, and positioning holes corresponding to the positioning columns are provided at the four corners of the bottom surface of the waste liquid chamber 12. When the waste liquid chamber 12 is installed on the machine body 1, the cooperation of the positioning columns and the positioning holes makes the installation position of the waste liquid chamber 12 more accurate and the cooperation more stable. Furthermore, an upwardly protruding plug-in post is provided at the center of the cavity installation area, and the plug-in post is electrically connected to the power supply and control device of the cleaning machine. A plug-in hole corresponding to the plug-in post is provided at the center of the bottom surface of the waste liquid chamber 12, and an ultrasonic oscillation device electrically connected to the plug-in hole is provided inside the waste liquid chamber 12, so that when the waste liquid chamber 12 is installed on the machine body 1, the plug-in post is inserted into the plug-in hole, and the user can control the power supply through the plug-in post and the plug-in hole to be transmitted to the ultrasonic oscillation device through the control device. When the ultrasonic oscillation device is turned on, the sound waves emitted by the ultrasonic oscillation device use the liquid in the waste liquid chamber 12 as a medium to knock down the dirt attached to the inner wall of the waste liquid chamber 12, thereby achieving the purpose of cleaning the waste liquid chamber 12. Optionally, a self-cleaning button is provided on the machine body 1, and when the user presses the self-cleaning button, the control device controls the conduction between the power supply and the plug-in post.

[0056] The cleaning machine of this embodiment forms a complete cleaning process by combining the spraying system 2, the scrubbing system 3, the vacuum adsorption system 4 and the drying system 5, thereby improving the cleaning efficiency. The recycling and purification of the waste liquid by the circulation system 6 reduces the waste of the cleaning liquid. Due to the recycling and reuse of the cleaning liquid, the consumption of the cleaning liquid is reduced, thereby reducing the operating cost. In a possible implementation, after the cleaning machine is started, the spraying system 2 starts to work and sprays the cleaning liquid in the liquid storage chamber 11 evenly onto the ground, the scrubbing system 3 starts to rotate and rubs against the ground to produce a cleaning effect, the vacuum adsorption system 4 starts to work and sucks the sewage and impurities on the ground into the waste liquid chamber 12, the circulation system 6 starts to work and sucks the sewage in the waste liquid chamber 12 into the first extraction device 61 for treatment, and the treated cleaning liquid is transported back to the liquid storage chamber 11 for reuse by the spraying system 2, and the drying system 5 starts to work and evaporates the water on the ground that is not sucked away by the vacuum adsorption system 4, thereby achieving the effect of drying the ground.

[0057] Specifically, the spraying system 2 includes a spray gun assembly and a valve connected between the spray gun assembly and the liquid storage chamber 11. A water outlet trough 13 is provided on the bottom side of the machine body 1. When the spraying system 2 is started, the cleaning liquid in the liquid storage chamber 11 is sprayed out from the spray gun assembly through the valve, through the water outlet trough 13, and sprayed onto the ground. Specifically, the scrubbing system 3 includes a brush roller 31 rotatably connected to the lower side of the machine body 1, and a first motor drivingly connected to the brush roller 31. When the scrubbing system 3 is started, the first motor drives the brush roller 31 to rotate to scrub the ground. Specifically, the vacuum adsorption system 4 includes a squeegee 41 installed on the lower side of the machine body 1, and a vacuum device connected to the squeegee 41 through a pipeline. The squeegee 41 is also connected to the waste liquid chamber 12. When the adsorption system is started, the vacuum device causes the squeegee 41 to reach a negative pressure state, and the squeegee 41 scrapes the moisture on the ground into the waste liquid chamber 12. The drying system 5 includes a fan 51 installed in the machine body 1, and a second motor 52 driving the fan 51. The lower side of the machine body 1 is provided with a vent 14. When the drying system 5 is started, the second motor 52 drives the fan 51 to blow air toward the ground, and the air blows toward the ground through the vent 14 to dry the moisture on the ground. It should be explained that the above-mentioned spraying system 2, scrubbing system 3, vacuum adsorption system 4, and drying system 5 can also be implemented in other setting methods, which will not be described in detail here.

[0058] Furthermore, the liquid storage chamber 11 is divided into a main chamber 111, an auxiliary chamber 112 and a liquid outlet chamber 113 by a partition. The main chamber 111 and the liquid outlet chamber 113 are connected by a first pipeline. A first solenoid valve and a first pump are successively arranged in the first pipeline from the main chamber 111 to the liquid outlet chamber 113. The first solenoid valve is used to open or close the pipeline between the main chamber 111 and the first pump. The first pump is used to pump the liquid in the main chamber 111 to the liquid outlet chamber 113; the auxiliary chamber 112 and the liquid outlet chamber 113 are connected by a second pipeline. A second solenoid valve and a second pump are successively arranged in the second pipeline from the auxiliary chamber 112 to the liquid outlet chamber 113. The second solenoid valve is used to open or close the pipeline between the auxiliary chamber 112 and the second pump. The second pump is used to pump the liquid in the auxiliary chamber 112 to the liquid outlet chamber 113. It is understandable that when the cleaning liquid in the main chamber 111 needs to be used, the first solenoid valve is opened, the first pump is started, and the cleaning liquid in the main chamber 111 is sucked to the liquid outlet chamber 113 for use by the spraying system 2; when the purified cleaning liquid in the auxiliary chamber 112 needs to be used, the second solenoid valve is opened, the second pump is started, and the cleaning liquid in the auxiliary chamber 112 is sucked to the liquid outlet chamber 113 for use by the spraying system 2. Among them, in this embodiment, the liquid storage chamber 11 is divided into the main chamber 111, the auxiliary chamber 112 and the liquid outlet chamber 113 by the partition, so as to realize the independent management of cleaning liquids in different states, and the waste liquid chamber 12 and the auxiliary chamber 112 are connected by the circulation system 6, so as to realize the reuse of waste liquid, and further improve the resource utilization efficiency.

[0059] Furthermore, a filtering system is provided between the vacuum adsorption system 4 and the waste liquid chamber 12, and the filtering system includes a primary filtering device and a secondary filtering device. A plurality of filter screens are arranged in sequence along the liquid flow direction inside the primary filtering device, and an activated carbon adsorbent is filled inside the secondary filtering device. It should be explained that the primary filtering device and the secondary filtering device proposed in this embodiment are only used as examples, and the filtering system in this scheme is not limited to only the primary filtering device and the secondary filtering device. In other embodiments, a tertiary filtering device, a quaternary filtering device, etc. may also be included. It should be pointed out that the filtering system in this scheme is designed to achieve solid-liquid separation and purification of sewage. Such filtering devices in the prior art are already relatively mature, and the tertiary filtering device and the quaternary filtering device can select the existing liquid filtering and purification devices in the prior art.

[0060] Furthermore, the liquid inlet of the first extraction device 61 is connected to the waste liquid chamber 12 through a third pipeline, the liquid outlet of the first extraction device 61 is connected to the auxiliary chamber 112, and a third solenoid valve and a third pump are successively arranged in the third pipeline from the waste liquid chamber 12 to the first extraction device 61. The third solenoid valve is used to open or close the pipeline between the waste liquid chamber 12 and the third pump. The third pump is used to pump the liquid in the waste liquid chamber 12 to the first extraction device 61. The first extraction device 61 is used to receive the sewage in the waste liquid chamber 12 and transport the cleaning liquid components obtained after extraction to the auxiliary chamber 112. It can be understood that when treating waste liquid, traditional cleaning machines often only perform simple filtration or precipitation, and the treatment effect is limited. In addition, a large amount of valuable cleaning liquid will be directly discharged, resulting in a waste of resources. However, this embodiment achieves deep purification of waste liquid by setting a filtration system and a first extraction device 61, converting it into reusable new liquid, and improving resource recovery efficiency. In one possible implementation, the vacuum adsorption system 4 sucks sewage and impurities on the ground into the waste liquid chamber 12. The waste liquid passes through the filtration system, first passes through the primary filtration device to remove solid impurities, and then passes through the secondary filtration device to remove harmful substances. The filtered waste liquid then enters the first extraction device 61 through the third pipeline. The first extraction device 61 extracts the waste liquid, evaporates the water therein, and then condenses the steam into new liquid. The extracted new liquid is transported to the auxiliary chamber 112 through the liquid outlet, waiting for the next use.

[0061] It should be explained that the purpose of designing the first extraction device 61 is to extract the cleaning liquid contained in the sewage in the waste liquid chamber 12 and transport it to the auxiliary chamber 112. Since the main component of the cleaning liquid in this embodiment is isopropanol, it has good solubility and is suitable for removing grease, dirt, etc., and its boiling point is about 82.5°C. Therefore, in this embodiment, the extraction heating temperature of the first extraction device 61 is set to 85°C, so that the isopropanol contained in the sewage in the waste liquid chamber 12 can be smoothly extracted.

[0062] Optionally, the first extraction device 61 includes a plurality of extraction units 63 of the same arrangement, wherein the extraction unit 63 includes a hollow outer tube 631, an inner tube 632 and an insertion tube 633, wherein the upper end of the outer tube 631 is open and the lower end is closed, the lower end of the inner tube 632 is open and the upper end is closed, the upper and lower ends of the insertion tube 633 are both open, the inner tube 632 is coaxially inserted in the outer tube 631, a first heating gap 634 is formed between the inner side wall of the outer tube 631 and the outer side wall of the inner tube 632, and a first flow gap 635 exists between the inner side wall of the lower end of the outer tube 631 and the lower end opening of the inner tube 632. The cannula 633 passes through the closed lower end of the outer tube 631 and the open lower end of the inner tube 632 and is coaxially inserted into the inner tube 632. A second heating gap 636 is formed between the outer wall of the cannula 633 and the inner wall of the inner tube 632. A second flow gap 637 exists between the upper opening of the cannula 633 and the upper inner wall of the inner tube 632. Therefore, the liquid introduced from the upper opening of the outer tube 631 will pass through the first heating gap 634, the first flow gap 635, the second heating gap 636, the second flow gap 637, and the hollow channel inside the cannula 633 in sequence to be finally discharged. Furthermore, a first heating element 6341 is provided in the first heating gap 634, and the first heating element 6341 is spirally wrapped around the outer side of the inner tube 632. The first heating element 6341 can be an electric heating wire, a ceramic heating element or other components that can achieve the same heating function; a second heating element 6361 is provided in the second heating gap 636, and the second heating element 6361 is spirally wrapped around the outer side of the cannula 633. The second heating element 6361 can be an electric heating wire, a ceramic heating element or other components that can achieve the same heating function. Thus, the liquid introduced from the upper opening of the outer tube 631 will first be heated by the first heating element 6341 in the first heating gap 634 at a heating temperature of 80°C. In this process, the liquid is rapidly heated, but most of it has not yet been evaporated and vaporized; further, the liquid or gas-liquid mixture heated in the first heating gap 634 passes through the first circulation gap 635 and enters the second heating gap 636, and is heated by the second heating element 6361 in the second heating gap 636 at a heating temperature of 85°C. In this process, the isopropanol in the liquid is basically evaporated and vaporized, and the steam passes through the second circulation gap 637 and passes through the upper opening of the insert tube 633 through the hollow channel inside the insert tube 633 to be discharged to the auxiliary cavity 112. Furthermore, a porous ceramic body or adsorbent cotton 638 is provided at the upper opening of the insert tube 633, and the steam will adhere to it when passing through to form liquid and then flow out through the hollow channel inside the insert tube 633. Furthermore, a discharge channel 639 is opened in the side wall of the insert tube 633, and a first end of the discharge channel 639 is connected to the second heating gap 636 and is arranged in the middle of the outer side wall of the insert tube.

[0063] Optionally, the auxiliary chamber 112 of this embodiment includes a separated auxiliary water chamber 1121 and an auxiliary agent chamber 1122, the auxiliary agent chamber 1122 is connected to the lower end opening of the cannula 633, and the second end of the discharge channel 639 is connected to the auxiliary water chamber 1121, so that the liquid that has not been vaporized after being heated by the second heating gap 636 can be discharged into the auxiliary water chamber 1121 through the discharge channel 639. It can be understood that the auxiliary water chamber 1121 and the auxiliary agent chamber 1122 are respectively connected to the liquid outlet chamber 113, and both are provided with valves that can be turned on or off. It should be explained that the upper end openings of the outer tubes 631 of several identically arranged extraction units 63 are all connected to the waste liquid chamber 12, and the lower end openings of the cannula 633 are all connected to the auxiliary chamber 112. In another embodiment, the auxiliary chamber 112 is connected to the lower end opening of the insert tube 633 as a chamber for storing liquid after condensation of steam, and the second end of the discharge channel 639 is connected to the waste liquid chamber 12, so that the liquid that has not been vaporized after heating in the second heating gap 636 can be discharged into the waste liquid chamber 12 through the discharge channel 639, and the foreign matter attached to the cavity wall in the waste liquid chamber 12 can be heated and dissolved. It should be noted that if it is not specifically mentioned in this scheme that the auxiliary chamber 112 includes a separated auxiliary water chamber 1121 and an auxiliary agent chamber 1122, it is assumed that the auxiliary chamber 112 itself is used as a chamber for storing liquid after condensation of steam. It should be explained that, since the main component of the cleaning liquid selected in this embodiment is isopropanol, which has a boiling point of about 82.5°C, the liquid content of the condensed steam discharged under the heating action of the extraction unit 63 is mostly isopropanol, and the liquid content discharged from the discharge channel 639 is mostly water.

[0064] Optionally, the discharge channel 639 has a first end, a second end, and a third end, wherein the first end and the third end are both used to flow in the unvaporized liquid, and the second end is connected to the auxiliary water chamber 1121 or the waste liquid chamber 12 for discharging the liquid. Specifically, the first end of the discharge channel 639 is connected to the second heating gap 636 area and is arranged in the middle of the outer wall of the insert tube 633, and the third end of the discharge channel 639 is connected to the first flow gap 635 and is arranged at the bottom of the outer wall of the insert tube 633. Further, a normally closed solenoid valve is arranged at the third end of the discharge channel 639. During the operation of the extraction unit 63, the normally closed solenoid valve is closed, and the third end of the discharge channel 639 is not conductive; after the extraction unit 63 is finished working, the normally closed solenoid valve is opened, the third end of the discharge channel 639 is conductive, and the unvaporized liquid in the first heating gap 634 and the second heating gap 636 can be discharged through the third end of the discharge channel 639. It should be explained that the method of setting the normally closed solenoid valve and controlling the switch belongs to the prior art and will not be repeated here.

[0065] Optionally, in order to prevent the heat in the extraction unit 63 from dissipating and affecting the operation of other components in the body 1, in this embodiment, at least one circle of heat insulation material is sleeved on the outer circumference of the outer tube 631 to reduce the heat of the extraction unit 63 from dissipating outward.

[0066] Further, the circulation system 6 also includes a second extraction device 62, the liquid inlet of the second extraction device 62 is connected to the auxiliary chamber 112 through a fourth pipeline, the liquid outlet of the second extraction device 62 is connected to the auxiliary chamber 112 through a fifth pipeline, and a fourth solenoid valve and a fourth pump are successively arranged in the fourth pipeline from the auxiliary chamber 112 to the second extraction device 62. The fourth solenoid valve is used to open or close the pipeline from the auxiliary chamber 112 to the second extraction device 62, and the fourth pump is used to pump the liquid in the auxiliary chamber 112 to the second extraction device 62, and the second extraction device 62 is used to receive the liquid in the auxiliary chamber 112 and then transport it to the auxiliary chamber 112 after extraction. It can be understood that during long-term use, the cleaning liquid in the auxiliary chamber 112 may reduce its purity due to repeated recycling, thereby affecting the cleaning effect. In this embodiment, by adding the second extraction device 62, the cleaning liquid in the auxiliary chamber 112 can be purified again to solve the problem of insufficient purity. When the liquid in the auxiliary chamber 112 needs to be purified again, the fourth solenoid valve is opened, the fourth pump is started, and the liquid in the auxiliary chamber 112 is sucked into the second extraction device 62. The second extraction device 62 extracts the sucked liquid and evaporates the isopropanol therein to obtain a high-purity liquid. The high-purity liquid flows back to the auxiliary chamber 112 through the fifth pipeline, waiting for the next use. The second extraction device 62 has the same structure as the first extraction device 61.

[0067] Specifically, a first liquid level sensor is provided in the main cavity 111, a second liquid level sensor is provided in the auxiliary cavity 112, a third liquid level sensor is provided in the liquid outlet cavity 113, and a fourth liquid level sensor is provided in the waste liquid cavity 12; wherein, a conductivity sensor is also provided in the auxiliary cavity 112. It is understandable that conventional cleaning machines often lack real-time liquid level monitoring, resulting in the inability to timely understand the remaining amount of liquid in the liquid storage cavity 11 and the replenishment demand, which may cause problems such as insufficient liquid supply or overflow, and conventional cleaning machines often lack real-time monitoring of the conductivity of the cleaning liquid, which may lead to poor cleaning effect or waste of resources. In this embodiment, the first liquid level sensor, the second liquid level sensor, and the third liquid level sensor are provided to monitor the liquid level changes in the main cavity 111, the auxiliary cavity 112, and the liquid outlet cavity 113 in real time, and transmit the signal to the control system. When the liquid level is lower than the preset threshold, the control system issues an alarm to prompt the operator to replenish the liquid in time; when the liquid level is higher than the preset threshold, the control system closes the relevant liquid inlet valve to prevent liquid overflow. At the same time, this embodiment also monitors the conductivity changes of the cleaning liquid in the auxiliary cavity 112 in real time by setting a conductivity sensor and transmits the signal to the control system. When the conductivity exceeds the preset range, the control system issues an alarm to prompt the operator to adjust the cleaning liquid ratio or replace it.

[0068] See also Figures 7 to 11 The embodiment of the present invention provides a cleaning method, which is applied to the cleaning machine as described above, and includes the following steps S100-S500:

[0069] S100, starting the spraying system 2, and controlling the spraying system 2 to spray the cleaning liquid in the liquid storage chamber 11 onto the ground;

[0070] S200, starting the scrubbing system 3, and controlling the scrubbing system 3 to rub against the ground to clean the ground;

[0071] S300, starting the vacuum adsorption system 4, and controlling the vacuum adsorption system 4 to suck the sewage on the ground into the waste liquid chamber 12;

[0072] S400, starting the drying system 5, and controlling the drying system 5 to blow air toward the ground to dry the ground;

[0073] S500 , starting the circulation system 6 , controlling the first extraction device 61 to extract the cleaning liquid component in the sewage in the waste liquid chamber 12 and transporting it to the liquid storage chamber 11 .

[0074] In this embodiment, the cleaning method realizes efficient, clean and environmentally friendly cleaning of the ground through the coordinated work of the spraying system 2, the scrubbing system 3, the vacuum adsorption system 4, the drying system 5 and the circulation system 6. The spraying system 2 provides sufficient wetting conditions for the scrubbing system 3, the scrubbing system 3 efficiently removes dirt and stains on the ground, the vacuum adsorption system 4 quickly removes sewage and impurities, the drying system 5 ensures that the ground is quickly dried, and the circulation system 6 realizes the purification and reuse of waste liquid. The whole process not only improves the cleaning efficiency, but also reduces the operating cost and environmental burden, which is in line with the concept of sustainable development.

[0075] Furthermore, the step S100 includes the following steps S110-S120:

[0076] S110, controlling the first solenoid valve to conduct the first pipeline, so that the first pump pumps the liquid in the main chamber 111 to the liquid outlet chamber 113;

[0077] S120 , controlling the second solenoid valve to conduct the second pipeline, and the second pump pumps the liquid in the auxiliary chamber 112 to the liquid outlet chamber 113 .

[0078] In this embodiment, by accurately controlling the operation of the first solenoid valve, the first pump, the second solenoid valve and the second pump, accurate control and mixing of the cleaning liquid in the main chamber 111 and the auxiliary chamber 112 are achieved, effectively reducing waste and pollution in the cleaning process and improving resource utilization efficiency.

[0079] Further, the step S500 includes the following steps S510:

[0080] S510, start the first extraction device 61, control the third electromagnetic valve to conduct the third pipeline, and the third pump machine sucks the liquid in the waste liquid chamber 12 to the first extraction device 61, and the first extraction device 61 performs extraction and purification operations on the liquid therein and transports the extracted and purified cleaning liquid components to the auxiliary chamber 112. By starting the first extraction device 61 and controlling the operation of the third electromagnetic valve and the third pump machine, the waste liquid in the waste liquid chamber 12 is sucked, extracted, purified and reused, which not only reduces the discharge of waste liquid and the pollution to the environment, but also improves the utilization efficiency of resources.

[0081] Furthermore, the cleaning method further comprises the following steps S520:

[0082] S520, start the second extraction device 62, control the fourth solenoid valve to conduct the fourth pipeline, and the fourth pump machine sucks the liquid in the auxiliary chamber 112 to the second extraction device 62. The second extraction device 62 performs an extraction and purification operation on the liquid therein and delivers the extracted and purified liquid to the auxiliary chamber 112. By starting the second extraction device 62 and controlling the operation of the fourth solenoid valve and the fourth pump machine, the suction, extraction, purification and reuse of the liquid in the auxiliary chamber 112 are achieved. Through the extraction and purification operation, the liquid in the auxiliary chamber 112 is effectively purified and reused, thereby improving the utilization efficiency of resources.

[0083] Furthermore, the cleaning method further comprises the following steps S600-S900:

[0084] S600, obtain and analyze the detection signal of the first liquid level sensor, and obtain the liquid level height of the main chamber 111. If the liquid level height of the main chamber 111 is lower than the preset value of the lowest liquid level of the main chamber 111, the first solenoid valve is controlled to close the first pipeline, and the first pump stops operating. It can be understood that the first liquid level sensor is used to detect the liquid level height in the main chamber 111, and converts the liquid level change into an electrical signal output for analysis by the control system. After the control system obtains the detection signal of the first liquid level sensor, it calculates the liquid level height of the main chamber 111. If the height is lower than the preset value of the lowest liquid level of the main chamber 111, an instruction is issued to close the first solenoid valve and stop the operation of the first pump, which can effectively prevent the cleaning fluid in the main chamber 111 from being over-sucked, causing the pump to run idle or be damaged, and at the same time ensure that there is enough cleaning fluid for subsequent use. Among them, the preset value of the lowest liquid level of the main chamber 111 can be one-fifth of the capacity of the main chamber 111.

[0085] S700, obtain and analyze the detection signal of the second liquid level sensor to obtain the liquid level height of the auxiliary chamber 112. If the liquid level height of the auxiliary chamber 112 is lower than the preset value of the lowest liquid level of the auxiliary chamber 112, control the second solenoid valve to close the second pipeline and the second pump to stop operating; if the liquid level height of the auxiliary chamber 112 is higher than the preset value of the highest liquid level of the auxiliary chamber 112, control the third solenoid valve to close the third pipeline, the third pump to stop operating, and the first extraction device 61 to stop operating. It can be understood that the second liquid level sensor detects the liquid level height in the auxiliary chamber 112, and also outputs it to the control system through an electrical signal. The control system analyzes the signal of the second liquid level sensor. If the liquid level in the auxiliary chamber 112 is lower than the preset value of the lowest liquid level in the auxiliary chamber 112, the second solenoid valve is closed and the second pump is stopped; if it is higher than the preset value of the highest liquid level in the auxiliary chamber 112, the third solenoid valve is closed, the third pump and the first extraction device 61 are stopped to avoid excessive liquid in the auxiliary chamber 112, thereby maintaining the liquid level in the auxiliary chamber 112 within a reasonable range, thereby preventing the pump from idling and avoiding waste and pollution caused by liquid overflow.

[0086] S800, obtain and analyze the detection signal of the third liquid level sensor, obtain the liquid level height of the liquid outlet chamber 113, and if the liquid level height of the liquid outlet chamber 113 is lower than the preset value of the lowest liquid level of the liquid outlet chamber 113, an alarm is issued; if the liquid level height of the liquid outlet chamber 113 is higher than the preset value of the highest liquid level of the liquid outlet chamber 113, the first solenoid valve is controlled to close the first pipeline, the second solenoid valve is controlled to close the second pipeline, and the first pump and the second pump are stopped. It can be understood that the third liquid level sensor detects the liquid level height in the liquid outlet chamber 113 to ensure that the amount of liquid in the liquid outlet chamber 113 is moderate, neither too much to cause overflow nor too little to affect the spraying effect.

[0087] S900, acquiring and analyzing the detection signal of the conductivity sensor to obtain the purity of the liquid in the auxiliary chamber 112. If the purity of the liquid in the auxiliary chamber 112 is lower than the preset purity value of the cleaning liquid, the fourth solenoid valve is controlled to connect the fourth pipeline, and the fourth pump pumps the liquid in the auxiliary chamber 112 to the second extraction device 62. The second extraction device 62 performs an extraction and purification operation on the liquid therein and delivers the extracted and purified liquid to the auxiliary chamber 112. If the purity of the liquid in the auxiliary chamber 112 is higher than the preset purity value of the cleaning liquid, the fourth solenoid valve is controlled to close the fourth pipeline, the fourth pump stops operating, and the second extraction device 62 stops operating. It can be understood that the conductivity sensor is used to detect the conductivity of the liquid in the auxiliary chamber 112, thereby indirectly reflecting the purity of the liquid. If the purity of the liquid in the auxiliary chamber 112 is lower than the preset value of the purity of the cleaning liquid, the control system starts the fourth solenoid valve and the fourth pump to pump the liquid in the auxiliary chamber 112 to the second extraction device 62 for purification; if the purity is higher than the preset value of the purity of the cleaning liquid, the fourth solenoid valve is closed and the fourth pump and the second extraction device 62 are stopped to ensure that the purity of the liquid in the auxiliary chamber 112 meets the cleaning requirements and improve the cleaning effect.

[0088] It should be explained that the above-mentioned preset value of the minimum liquid level of the main chamber 111, the preset value of the minimum liquid level of the auxiliary chamber 112, the preset value of the maximum liquid level of the auxiliary chamber 112, the preset value of the minimum liquid level of the liquid outlet chamber 113, the preset value of the maximum liquid level of the liquid outlet chamber 113 and the preset value of the purity of the cleaning liquid can be set according to actual needs. For example, the preset value of the minimum liquid level of the main chamber 111 can be set to one-fifth of the volume of the main chamber 111, the preset value of the maximum liquid level of the auxiliary chamber 112 can be set to four-fifths of the volume of the auxiliary chamber 112, and the preset value of the purity of the cleaning liquid can be set to 80%.

[0089] The above examples are only used to further illustrate the technical content of the present invention, so that readers can understand it more easily, but it does not mean that the implementation of the present invention is limited to this. Any technical extension or re-creation made according to the present invention is protected by the present invention. The protection scope of the present invention shall be subject to the claims.

Claims

1. A cleaning machine, characterized in that: The machine body comprises: a liquid storage chamber for storing cleaning liquid and a waste liquid chamber for storing recycled sewage, a spraying system, a scrubbing system, a vacuum adsorption system and a drying system are sequentially arranged on the bottom side of the machine body along the front-back direction thereof, the spraying system is connected to the liquid storage chamber and is used to spray the cleaning liquid in the liquid storage chamber to the ground, the scrubbing system is used to rub and clean the ground, the vacuum adsorption system is connected to the waste liquid chamber and is used to suck the sewage on the ground into the waste liquid chamber, and the drying system is used to dry the ground; Wherein, the body is also provided with a circulation system, the circulation system comprising a first extraction device connected between the liquid storage chamber and the waste liquid chamber, the first extraction device being used to extract the cleaning liquid component in the sewage in the waste liquid chamber and transport it to the liquid storage chamber; The liquid storage chamber is divided into a main chamber, an auxiliary chamber and a liquid outlet chamber by a partition, the main chamber is connected with the liquid outlet chamber through a first pipeline, a first solenoid valve and a first pump are successively arranged in the first pipeline from the main chamber to the liquid outlet chamber, the first solenoid valve is used to open or close the pipeline from the main chamber to the first pump, and the first pump is used to pump the liquid in the main chamber to the liquid outlet chamber; the auxiliary chamber is connected with the liquid outlet chamber through a second pipeline, a second solenoid valve and a second pump are successively arranged in the second pipeline from the auxiliary chamber to the liquid outlet chamber, the second solenoid valve is used to open or close the pipeline from the auxiliary chamber to the second pump, and the second pump is used to pump the liquid in the auxiliary chamber to the liquid outlet chamber; A filtering system is provided between the vacuum adsorption system and the waste liquid chamber, the filtering system comprising a primary filtering device and a secondary filtering device, a plurality of filtering screens are arranged in sequence along the liquid flow direction inside the primary filtering device, and an activated carbon adsorbent is filled inside the secondary filtering device; The liquid inlet of the first extraction device is connected to the waste liquid chamber through a third pipeline, the liquid outlet of the first extraction device is connected to the auxiliary chamber, a third electromagnetic valve and a third pump are successively arranged in the third pipeline from the waste liquid chamber to the first extraction device, the third electromagnetic valve is used to open or close the pipeline from the waste liquid chamber to the third pump, the third pump is used to pump the liquid in the waste liquid chamber to the first extraction device, and the first extraction device is used to receive the sewage in the waste liquid chamber and transport the cleaning liquid components obtained after extraction to the auxiliary chamber; The first extraction device comprises a plurality of extraction units of the same arrangement, wherein the extraction units comprise a hollow outer tube, an inner tube and an insert tube, wherein the upper end of the outer tube is open and the lower end is closed, the lower end of the inner tube is open and the upper end is closed, the upper and lower ends of the insert tube are both open, the inner tube is coaxially inserted into the outer tube, a first heating gap is formed between the inner side wall of the outer tube and the outer side wall of the inner tube, and a first flow gap exists between the lower inner side wall of the outer tube and the lower opening of the inner tube; the insert tube passes through the lower end of the outer tube, which is closed, and the lower end of the inner tube is coaxially inserted into the inner tube, a second heating gap is formed between the outer side wall of the insert tube and the inner side wall of the inner tube, and a second flow gap exists between the upper end opening of the insert tube and the upper inner side wall of the inner tube; a first heating element is arranged in the first heating gap, and the first heating element is spirally wrapped around the outer side of the inner tube; a second heating element is arranged in the second heating gap, and the second heating element is spirally wrapped around the outer side of the insert tube.

2. A cleaning machine according to claim 1, characterized in that: The circulation system also includes a second extraction device, wherein the liquid inlet of the second extraction device is connected to the auxiliary chamber via a fourth pipeline, and the liquid outlet of the second extraction device is connected to the auxiliary chamber via a fifth pipeline. A fourth solenoid valve and a fourth pump are successively arranged in the fourth pipeline from the auxiliary chamber to the second extraction device. The fourth solenoid valve is used to open or close the pipeline from the auxiliary chamber to the second extraction device, and the fourth pump is used to pump the liquid in the auxiliary chamber to the second extraction device. The second extraction device is used to receive the liquid in the auxiliary chamber and transport it to the auxiliary chamber after extraction.

3. A cleaning machine according to claim 2, characterized in that: A first liquid level sensor is arranged in the main cavity, a second liquid level sensor is arranged in the auxiliary cavity, a third liquid level sensor is arranged in the liquid outlet cavity, and a fourth liquid level sensor is arranged in the waste liquid cavity; wherein a conductivity sensor is also arranged in the auxiliary cavity.

4. A cleaning method, characterized in that: The cleaning machine as claimed in claim 3 comprises the following steps: Starting the spraying system and controlling the spraying system to spray the cleaning liquid in the liquid storage chamber onto the ground; Starting the scrubbing system and controlling the scrubbing system to rub against the ground to clean the ground; Starting the vacuum adsorption system and controlling the vacuum adsorption system to suck the sewage on the ground into the waste liquid chamber; Starting the drying system and controlling the drying system to blow air toward the ground to dry the ground; The circulation system is started to control the first extraction device to extract the cleaning liquid component in the sewage in the waste liquid chamber and transport it to the liquid storage chamber.

5. A cleaning method according to claim 4, characterized in that: The starting of the spraying system and controlling the spraying system to spray the cleaning liquid in the liquid storage chamber onto the ground include the following steps: Control the first solenoid valve to conduct the first pipeline, so that the first pump pumps the liquid in the main chamber to the liquid outlet chamber; The second solenoid valve is controlled to conduct the second pipeline, and the second pump draws the liquid in the auxiliary chamber to the liquid outlet chamber.

6. A cleaning method according to claim 4, characterized in that: The step of controlling the first extraction device to extract the cleaning liquid component from the sewage in the waste liquid chamber and transporting it to the liquid storage chamber comprises the following steps: The first extraction device is started, and the third solenoid valve is controlled to connect the third pipeline. The third pump draws the liquid in the waste liquid chamber to the first extraction device. The first extraction device performs extraction and purification operations on the liquid therein and delivers the cleaning liquid components after extraction and purification to the auxiliary chamber.

7. A cleaning method according to claim 4, characterized in that: The cleaning method further comprises the following steps: The second extraction device is started, the fourth solenoid valve is controlled to connect the fourth pipeline, and the fourth pump sucks the liquid in the auxiliary chamber to the second extraction device. The second extraction device performs an extraction and purification operation on the liquid therein and delivers the cleaning liquid components after extraction and purification to the auxiliary chamber.

8. A cleaning method according to claim 4, characterized in that: The cleaning method further comprises the following steps: Acquire and analyze the detection signal of the first liquid level sensor to obtain the liquid level height of the main chamber. If the liquid level height of the main chamber is lower than the preset value of the minimum liquid level of the main chamber, control the first solenoid valve to close the first pipeline, and the first pump stops operating; Acquire and analyze the detection signal of the second liquid level sensor to obtain the liquid level height of the auxiliary chamber. If the liquid level height of the auxiliary chamber is lower than the preset value of the auxiliary chamber minimum liquid level, control the second solenoid valve to close the second pipeline and stop the second pump. If the liquid level height of the auxiliary chamber is higher than the preset value of the auxiliary chamber maximum liquid level, control the third solenoid valve to close the third pipeline, stop the third pump, and stop the first extraction device. Acquire and analyze the detection signal of the third liquid level sensor to obtain the liquid level height of the liquid outlet chamber. If the liquid level height of the liquid outlet chamber is lower than the preset value of the lowest liquid level of the liquid outlet chamber, an alarm is issued; if the liquid level height of the liquid outlet chamber is higher than the preset value of the highest liquid level of the liquid outlet chamber, the first solenoid valve is controlled to close the first pipeline, the second solenoid valve is controlled to close the second pipeline, and the first pump and the second pump are controlled to stop operating; The detection signal of the conductivity sensor is acquired and analyzed to obtain the purity of the auxiliary chamber liquid. If the purity of the auxiliary chamber liquid is lower than the preset purity value of the cleaning liquid, the fourth solenoid valve is controlled to connect the fourth pipeline, and the fourth pump sucks the liquid in the auxiliary chamber to the second extraction device. The second extraction device performs an extraction and purification operation on the liquid therein and delivers the extracted and purified liquid to the auxiliary chamber. If the purity of the auxiliary chamber liquid is higher than the preset purity value of the cleaning liquid, the fourth solenoid valve is controlled to close the fourth pipeline, the fourth pump stops operating, and the second extraction device stops operating.

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