CN112842169A

CN112842169A - Floor cleaning machine

Info

Publication number: CN112842169A
Application number: CN202110148534.9A
Authority: CN
Inventors: 杨勇
Original assignee: Shenzhen 3irobotix Co Ltd
Current assignee: Shenzhen 3irobotix Co Ltd
Priority date: 2021-02-03
Filing date: 2021-02-03
Publication date: 2021-05-28

Abstract

A floor scrubber, comprising: a cleaning seat including a cleaning roller; a body, a cleaning water tank, and a recovery water tank; the handle assembly is connected to the body and used for being held by a user; one end of the dirty recovery pipeline is connected with the cleaning seat part, and the other end of the dirty recovery pipeline is communicated with the recovery water tank; the suction assembly is arranged on the body and used for forming negative pressure so as to recycle the sewage collected by the cleaning roller to the recycling water tank through the sewage recycling pipeline; the clean seat portion includes preceding dirty entry, back dirty entry to and the drainage piece that communicates respectively with preceding dirty entry and back dirty entry, and the drainage piece includes the drainage tube, and the drainage tube communicates with dirty recovery tube way through the upper shed of its upper end, and the drainage tube communicates with preceding dirty entry and back dirty entry through the lower shed of its lower extreme, has contained angle alpha between the extending direction of drainage tube and the working face of clean seat portion, and contained angle alpha is less than 90. The application provides a floor cleaning machine can reduce sewage and climb the degree of difficulty, improves sewage recovery efficiency.

Description

Floor cleaning machine

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of cleaning equipment, in particular to a floor washing machine.

[ background of the invention ]

The floor washing machine is increasingly popular with the majority of users as a cleaning household appliance, and generally comprises a body and a cleaning seat part. The internal recovery water tank and the clean water tank of setting to and be used for the main motor of suction, clean seat portion is including being used for holding in the palm the cleaning roller of wiping, for the clean efficiency of guarantee, generally sets up two cleaning rollers. Clean water is sprayed to the cleaning roller with fluff through the built-in water pipe, and the cleaning roller rotates at a high speed to mop the ground.

In order to recover the sewage discharged by the cleaning roller as soon as possible, the cleaning seat part of the product is often provided with a front suction opening and a rear suction opening, so that the floor cleaning is completed quickly and efficiently. The main motor provides power, negative pressure and air flow are formed in the suction port and the dirt recovery pipeline, then sewage after the cleaning roller drags the ground enters the dirt recovery pipeline through the suction ports arranged in the front and at the back of the cleaning seat part, water in the suction port and the pipeline is driven to enter the recovery water tank, and the washing, dragging and sucking processes are completed.

Although this kind of product is very high-efficient when clean, and is time-saving, but under the unchangeable condition of main power source power, because the suction inlet is divided for two suction inlets in front and back by original single suction inlet, so, for single suction inlet, must can reduce the flow of air and to the vacuum on ground, and simultaneously, because two cleaning roller are clean more high-efficient, so under the same condition, the sewage through dirty recovery pipeline in the unit interval will be more than single suction inlet, in the twinkling of an eye that the product was shut down, can remain a small amount of sewage in the pipeline, these sewage can be along with the pipeline stream meeting ground, give the user and produce not good experience.

And, dirty recovery tube must have certain length, at the in-process that sewage passes through suction inlet and dirty recovery tube entering recycling bin, must last sewage to exist, in-process on the ground is being mopped to the user, sewage is from the suction inlet to the recycling bin needs certain time, and the length of this time has directly decided user's experience impression, if retrieve too slowly, if want to accomplish the duration that sewage recovery then must increase main motor and could accomplish, perhaps there is more water and can't be retrieved to the recycling bin and flow back to ground, no matter which kind of circumstances can all lead to the fact poor experience impression for the user.

Since the gravity of water is greater than that of air and the velocity of water in the duct is less than the velocity of air, water rises along the duct only in a manner that climbs along the walls of the duct. In the product of current single suction inlet floor cleaning machine, the structure in its wind channel is mostly single wind channel, the wind channel front end is generally unanimous with the direction of suction inlet, the wind channel is the same with the direction that sewage flows promptly, because the wind channel rear end needs the certain angle of lifting during in-service use, so the wind channel has the angle of an tilt up, but wind channel and suction inlet direction also are unanimous on the overall direction, like this with regard to furthest's the influence of the gravity of having reduced water to the floor cleaning machine function of absorbing water, sewage recovery efficiency is high, make the user obtain fine experience. However, for a floor washing machine with double suction ports, the air duct structure cannot adopt the single suction port scheme, and if the water in the front dirty inlet and the water in the rear dirty inlet are simply collected to the main suction port, the influence of gravity on the water is difficult to overcome, so that the sewage climbing is difficult, and the water which is not timely recovered in the air duct when a product is stopped flows back to the ground, so that the secondary cleaning requirement is met, and the use experience of a user is reduced.

[ summary of the invention ]

The invention aims to provide a floor washing machine, which improves the sewage recovery efficiency, reduces the risk of sewage backflow to the ground and improves the user experience.

The purpose of the invention is realized by the following technical scheme:

a floor scrubber, comprising:

a cleaning seat comprising a cleaning roller for mopping a floor, the cleaning roller comprising a front cleaning roller and a rear cleaning roller;

the body is arranged above the cleaning seat part and is movably connected with the cleaning seat part, and the body also comprises a cleaning water tank for providing cleaning water and a recovery water tank for recovering the cleaned sewage;

the handle assembly is connected to the body and used for being held by a user;

one end of the dirty recovery pipeline is connected with the cleaning seat part, and the other end of the dirty recovery pipeline is communicated with the recovery water tank;

the suction assembly is arranged on the body and used for forming negative pressure so as to recover the sewage collected by the cleaning roller to the recovery water tank through the sewage recovery pipeline;

the cleaning seat part comprises a front dirty inlet arranged facing the front cleaning roller, a rear dirty inlet arranged facing the rear cleaning roller and a drainage piece respectively communicated with the front dirty inlet and the rear dirty inlet, the drainage piece comprises a drainage tube, the drainage tube is communicated with the lower end of the dirty recovery pipeline through an upper opening at the upper end of the drainage tube, the drainage tube is communicated with the front dirty inlet and the rear dirty inlet through a lower opening at the lower end of the drainage tube, an included angle alpha is formed between the extending direction of the drainage tube and the working surface of the cleaning seat part, the included angle alpha is smaller than 90 degrees, under the action of negative pressure, sewage collected by the cleaning roller is sucked by the front dirty inlet and the rear dirty inlet, collected to the drainage piece, enters the drainage tube through the lower opening and obliquely ascends along the inner surface of the drainage tube, and finally flows into the recovery water tank.

In one embodiment, the draft tube has a central axis along which the draft tube extends obliquely upwardly.

In one embodiment, the central axis is angled from the working surface in the range of 30 ° to 70 °.

In one embodiment, the draft tube is inclined toward the rear cleaning roller.

In one embodiment, the lower opening is located between the front dirty inlet and the rear dirty inlet.

In one embodiment, the lower opening is substantially equidistant from the front and rear dirty inlets.

In one embodiment, the drainage member further comprises a liquid collection part arranged below the lower opening, and the liquid collection part is provided with a liquid collection cavity used for storing sewage flowing down from the lower opening after the suction assembly stops working.

In one embodiment, the projection of the lower opening onto the working surface falls within the range of the projection of the liquid collection chamber onto the working surface.

In one embodiment, the front dirty inlet has a front abutment wall at the abutting intersection with the lower opening, the rear dirty inlet has a rear abutment wall at the abutting intersection with the lower opening, and the bottom of the liquid collecting part is configured to be lower than the front abutment wall and/or the rear abutment wall.

In one embodiment, the liquid collecting part and the drainage tube are integrally manufactured into one piece.

Compared with the prior art, the invention has the following beneficial effects: the application provides a floor washing machine, through set up intercommunication suction inlet and dirty recovery pipeline's drainage piece on clean seat portion, the working face slope setting of the relative clean seat portion of drainage tube with drainage piece for climb upwards along the internal surface slope of drainage tube during sewage recovery, can reduce the degree of difficulty that sewage climbed, improve sewage recovery efficiency.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Wherein:

FIG. 1 is a schematic illustration of a scrubber as provided in an embodiment of the present application.

FIG. 2 is a schematic cross-sectional view of the scrubber shown in FIG. 1.

FIG. 3 is a schematic top view of the cleaning seat portion of the scrubber of FIG. 1.

Fig. 4 is an enlarged schematic view of the cross-sectional structure of the scrubber in fig. 2 at the cleaning seat a.

[ detailed description ] embodiments

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be further noted that, for the convenience of description, only some of the structures related to the present application are shown in the drawings, not all of the structures. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "comprising" and "having," as well as any variations thereof, in this application are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

An embodiment of the present application provides a scrubber 100. Referring to fig. 1-4, a scrubber 100 includes a handle assembly 12, a body 10, a cleaning seat 30, and a suction assembly 20.

Wherein, the main body 10 is disposed above the cleaning seat 30 and movably connected with the cleaning seat 30. And a handle assembly 12 connected to the main body 10 at an end away from the cleaning seat 30 for a user to operate and hold. The user grips the handle assembly 12 and thereby maneuvers the cleaning seat 30 over the floor to perform a cleaning task.

In this embodiment, the body 10 is elongated, the handle assembly 12 is connected to the upper end of the body 10, the cleaning seat 30 is connected to the lower end of the body 10, and the body 10 and the cleaning seat 30 are rotatably disposed by the adaptor 15, so that the handle assembly 12 and the body 10 can rotate relative to the cleaning seat 30, thereby changing the operation angle and flexibly adjusting the washing posture.

Referring to fig. 4, the cleaning shoe 30 includes a housing 37 and a cleaning roller provided on the housing 37. Specifically, the number of the cleaning rollers is two, and the cleaning rollers are a front cleaning roller 341 and a rear cleaning roller 342, which are connected to power and can be driven to rotate at a high speed to mop the floor. The housing 37 has opposite front and rear portions, a front cleaning roller 341 is provided at the front portion of the housing 37, and a rear cleaning roller 342 is provided at the rear portion of the housing 37. In this embodiment, the front cleaning roller 341 and the rear cleaning roller 342 are disposed in parallel, and are at least partially accommodated in the housing 37, and a space is provided between the front cleaning roller 341 and the rear cleaning roller 342 to form an installation space.

The cleaning seat portion 30 further includes a water spray plate disposed in the installation space between the front cleaning roller 341 and the rear cleaning roller 342. Specifically, the water spray plates include a front water spray plate 361 disposed adjacent to the front cleaning roller 341 and a rear water spray plate 362 disposed adjacent to the rear cleaning roller 342, and the water spray plates spray liquid in the air or on the ground or the corresponding cleaning roller. In this embodiment, the water spray plates include a front water spray plate 361 disposed to face the front cleaning roller 341 and a rear water spray plate 362 disposed to face the rear cleaning roller 342, so that the liquid sprayed from the front water spray plate 361 acts on the front cleaning roller surface and the liquid sprayed from the rear water spray plate 362 acts on the rear cleaning roller surface, thereby facilitating wetting of the cleaning roller.

The cleaning seat 30 is further provided with a suction port for sucking the residual sewage on the ground after cleaning, thereby recovering the sewage, so that the water spray plate sprays water outwards, and the sewage after cleaning is recovered through the suction port, thereby performing a cyclic process of washing, dragging and sucking the ground.

The body 10 further includes a cleaning water tank 50 and a recovery water tank 40. The cleaning water tank 50 is used to store cleaning water, and communicates with the front and rear

water spray plates

361 and 362 for wetting the cleaning roller and the floor. And the recovery water tank 40 is used for recovering the cleaned sewage.

The suction assembly 20 is used to create a negative pressure to draw the sewage on the floor into the recovery water tank 40. The floor washing machine 100 further comprises a dirt recovery pipeline 13, one end of the dirt recovery pipeline 13 is communicated with the recovery water tank 40, the other end of the dirt recovery pipeline 13 is communicated with the suction port of the cleaning seat portion 30, under the action of negative pressure, the sewage on the ground is sucked through the suction port, flows into the recovery water tank 40 through the dirt recovery pipeline 13 and is temporarily stored in the recovery water tank 40. In a particular embodiment, the suction assembly 20 includes a motor 21 and an impeller (not shown), the motor 21 driving the impeller to rotate to generate the negative pressure. In another embodiment, the pumping assembly 20 may also employ a vacuum pump to create the negative pressure.

In order to improve the portability of the floor washing machine 100, a battery pack 60 is used to supply power, and referring to fig. 2, the battery pack 60 is disposed in the body 10 and electrically connected to the motor to provide power for the operation of the motor.

The body 10 communicates the recovery tank 40 with the suction port of the cleaning seat 30 through the soil recovery pipe 13 to form a soil recovery passage, and communicates the cleaning tank 50 with the cleaning seat 30 through a clean water supply line (not shown) to form a cleaning water supply passage. Wherein dirty recovery pipeline 13 and clear water supply line are flexible hose, pass adapter 15, are connected with clean seat 30, can be along with adapter 5's rotation and the adjustment gesture of adaptability.

Clear water sprays on cleaning roller or subaerial, and the cleaning roller drags and wipe the back and produce sewage, for the convenience of sewage is retrieved by the suction as fast as possible, reduces sewage and leads to ground secondary pollution's risk. In an embodiment, referring to fig. 4, the suction port of the cleaning seat portion 30 includes a front dirty inlet 330 and a rear dirty inlet 332, the front dirty inlet 330 is disposed to face the front cleaning roller 341, the rear dirty inlet 332 is disposed to face the rear cleaning roller 342, and the cleaning seat portion 30 further includes a drainage member 38 respectively communicating with the front dirty inlet 330 and the rear dirty inlet 332. Specifically, the front end of the drainage member 38 communicates with the front dirty inlet 330, the rear end of the drainage member 38 communicates with the rear dirty inlet 332, the drainage member 38 includes a drainage tube 381, the lower end of the drainage tube 381 has a lower opening 380, the drainage tube 381 communicates with the lower end of the dirty recovery pipe 13 through an upper opening 3810 at the upper end thereof, the lower opening 380 communicates with both the front dirty inlet 330 and the rear dirty inlet 332, and the lower opening 380 is located between the front dirty inlet 330 and the rear dirty inlet 332 and is substantially the same as the distance from the front dirty inlet 330 and the rear dirty inlet 332. An included angle alpha is formed between the extending direction of the drainage tube 381 and the working surface of the cleaning seat portion 30, and the included angle alpha is smaller than 90 degrees, wherein the drainage member 38, the front suction back 330 and the back dirty inlet 332 are all positioned between the front cleaning roller 341 and the back cleaning roller 342, under the action of negative pressure, the sewage collected by the front cleaning roller 341 and the back cleaning roller 342 is sucked by the front dirty inlet 330 and the back dirty inlet 332, collected to the drainage member 38, enters the drainage tube 381 through the lower opening 380, obliquely ascends along the inner surface of the drainage tube 381, then flows through the dirty recovery pipeline 13, finally flows into the recovery water tank 40, and is temporarily stored in the recovery water tank 40. Specifically, the inner surface of the drainage tube 381 and the working surface of the cleaning seat 30 are obliquely arranged, and the drainage tube 381 is arranged in a non-vertical manner, so that the sewage can be supported by the inner surface of the connection switch 381 during climbing, and the climbing efficiency of the sewage along with the airflow is improved.

This floor cleaning machine that real-time example provided leads to setting up drainage piece 38 and will preceding dirty entry 330 and back dirty entry 332 and dirty recovery pipeline 13 three intercommunication, drainage piece 38 communicates dirty recovery pipeline 13 through the drainage tube 381 that the slope set up to, among the sewage recovery process, climb upwards along the internal surface slope of drainage tube 381, improved the efficiency that sewage climbed, thereby reduced the sewage and flow back to ground and lead to ground secondary pollution's risk.

Specifically, the draft tube 381 is a regular tubular shape having a central axis along which the draft tube 381 extends obliquely upward. More specifically, the draft tube 381 is inclined toward the rear cleaning roller 342. Preferably, the included angle between the central axis and the working surface of the cleaning seat 30 is 30-70 degrees, which is more convenient for the sewage to climb.

In one embodiment, the draft tube 381 has a connecting section connected to the contaminant recovery conduit 13 and a necked section communicating below the connecting section, the necked section having a smaller flow area than the connecting section. That is, the flow area of the lower necked-down segment is small, and the portion of the lower end of the draft tube 381 is thin, thereby facilitating the improvement of the flow velocity of the air flow at the lower end of the draft tube 381, improving the efficiency of the air flow to lift up the sewage collected to the draft tube 38, and ensuring that the sewage can be sucked into the draft tube 381 through the lower opening 380. Specifically, the connection section is sleeved outside the dirty recovery pipeline 13 and is in threaded connection with the dirty recovery pipeline 13.

Further, the flow area of the necking segment that will be located the top sets to the flow area who is greater than the necking segment that is located the below, and the flow area of necking segment everywhere is inconsistent promptly, and the flow area who is located the necking segment of bottommost is minimum to this department's air current velocity is the biggest, upwards extends more, and its flow area increases is favorable to improving the flux, and guarantee sewage recovery volume improves clean efficiency.

In this embodiment, the front contamination inlet 330, the lower opening 380, and the rear contamination inlet 332 are sequentially arranged along the front-rear direction, and the distances between the lower opening 380 and the front contamination inlet 330 and the rear contamination inlet 332 are substantially the same.

The dirty entry 330 before the adjacent position of preceding cleaning roller 341 is established, and the dirty entry 332 after the adjacent position of back cleaning roller 342 is established, and the sewage of the cleaning roller of being convenient for and ground contact position can be retrieved by the suction as early as possible, improves sewage recovery efficiency, the clean effect of guarantee. To ensure the sewage suction efficiency, further, the front soil inlet 330 is faced to a portion of the outer surface below the axis of the front cleaning roller 341, and the rear soil inlet 332 is faced to a portion of the outer surface below the axis of the rear cleaning roller 342. This position is adjacent to the position where the scrub roller contacts the floor where the contaminated water is generated and collected, and the front and rear contaminated

inlets

330 and 332 can timely recover the contaminated water.

In a specific embodiment, the projection of the front dirty inlet 330 on the working surface of the cleaning seat 30 has an overlapping portion with the projection of the front cleaning roller 341 on the working surface, and correspondingly, the projection of the rear dirty inlet 332 on the working surface of the cleaning seat 30 has an overlapping portion with the projection of the rear cleaning roller 342 on the working surface. Thus, the front soil inlet 330 is adjacent to the front cleaning roller 341, the rear soil inlet 332 and the rear cleaning roller 342, and the recovery efficiency of the soil is ensured to be high.

In one embodiment, the rotation directions of the front cleaning roller 341 and the rear cleaning roller 342 are set to be opposite, and the front cleaning roller 341 is set to rotate counterclockwise and the rear cleaning roller 342 rotates clockwise with reference to the state of the floor washing machine shown in fig. 4, and in the case where the front cleaning roller 341 and the rear cleaning roller 342 are driven to rotate, the linear velocity direction of the position where the front cleaning roller 341 contacts the floor surface is directed to the side of the front soil inlet 330, and the linear velocity direction of the position where the rear cleaning roller 342 contacts the work surface is directed to the side of the rear soil inlet 332. Therefore, along with the moving direction of the sewage driven by the rotation of the cleaning roller, the sewage can move towards the corresponding suction opening direction under the action of inertia, the sewage recovery efficiency is improved, and the cleaning effect is ensured.

It can be understood that the clean water tank 50 can provide clean water for mopping the floor, the clean water is sprayed onto the cleaning roller with fluff through the built-in clean water supply pipeline, the cleaning roller rotates at high speed to mop the floor, then the sewage after the cleaning roller mops the floor enters the pipeline through the suction ports arranged at the front and the back of the cleaning seat part 30, the power is provided by the motor, negative pressure and air flow are formed in the suction port and the dirt recovery pipeline 13, the water in the suction port and the dirt recovery pipeline 13 is driven to enter the recovery water tank 40, and the processes of washing, mopping and sucking are completed. But dirty recovery tube 13 must have certain length, in the in-process that sewage gets into recovery tank 40 through suction opening and dirty recovery tube 13, it must be that each district section of dirty recovery tube all has sewage to exist continuously, when the user accomplishes a work, when closing the scrubber, because suction assembly 20 stop work, the speed of rivers in dirty recovery tube 13 is slower than the speed that the air flows, at this moment can remain in dirty recovery tube 13 a small amount of sewage and must not be retrieved completely, when suction assembly 20 stop work, sewage flows to ground under the effect of gravity, the sewage that flows can drip on ground, lead to ground secondary pollution, it is clean to need the user to adopt other means, it is very bad to use experience.

In order to solve the above problem, in the floor washing machine provided in an embodiment of the present application, referring to fig. 4, the drainage member 38 further includes a liquid collection part 382 disposed below the lower opening 380, and the liquid collection part 38 forms a liquid collection chamber for temporarily storing the sewage flowing down from the lower opening 380 after the suction assembly 20 stops operating. Because lower opening 380 communicates in dirty recovery tube 13's lower extreme, sewage gets into dirty recovery tube 13 through only opening 380, when suction assembly 20 stop work, the sewage in the pipeline flows to ground under the effect of gravity, flows to the album liquid portion 382 of below, temporarily stores in album liquid intracavity, consequently, can not flow subaerial, has avoided the clear trouble of secondary. Wherein, the liquid collecting part 382 and the drainage tube 381 can be integrally formed or can be separately arranged.

In order to ensure that the dirty water does not drip outside the range of the liquid collecting portion 382, the liquid collecting portion 382 is arranged such that its projection on the working surface of the cleaning seat 30 covers the projection of the lower opening 380 on the floor. That is, the projection of the lower opening 380 on the working surface of the cleaning seat 30 falls within the range of the projection of the liquid collecting portion 382 on the working surface. Further, the sump is arranged such that a projection of the lower opening 380 onto the working surface of the cleaning seat 30 covers the projection of the lower opening 380 onto the working surface, which falls within the range of the projection of the sump onto the working surface. Therein, the working surface, which is to be understood as the working surface of the cleaning seat 30, which may also be referred to as the supporting surface of the two cleaning rollers, is usually the floor surface, substantially horizontal.

In one embodiment, referring to fig. 4, the front dirty inlet 330 has a front abutment wall 3301 at the adjacent intersection with the lower opening 380, the rear dirty inlet 332 has a rear abutment wall 3321 at the adjacent intersection with the lower opening 380, and the bottom of the sump portion is configured to be lower than the front abutment wall 3301 and/or the rear abutment wall 3321. Thus, the liquid collecting part 382 is sunken towards the lower surface that is lower than the adjacent dirty inlet 330 of preceding and dirty inlet 332 of back, and sewage is stored in the liquid collecting cavity under the action of gravity, and as long as the volume of liquid collecting cavity sets up rationally, can reduce sewage overflow to the dirty inlet of preceding and dirty inlet of back on the lower surface, flow out to ground and cause the risk of pollution.

In this embodiment, referring to fig. 3 and 4, the cleaning seat 30 further includes a liquid pump for pumping the water in the cleaning water tank 50 and pressurizing the water and delivering the pressurized water to the water spray plate, wherein the cleaning water is sprayed from the water spray plate and basically acts on the corresponding cleaning roller surface. Because the floor washing machine 100 provided by the embodiment is provided with the two cleaning rollers, the water adding amount of the two cleaning rollers can be flexibly controlled, and the cleaning efficiency is improved. Further, the number of the liquid pumps is two, and the two liquid pumps include a first pressure pump 31 and a second pressure pump 32, the water inlet ends of the first pressure pump 31 and the second pressure pump 32 are both communicated with the clean water tank 50, the water outlet end of the first pressure pump 31 is communicated with the front water spray plate 361, the water outlet end of the second pressure pump 32 is communicated with the rear water spray plate 362, the first pressure pump 31 is used for sucking the water in the clean water tank and spraying the pressurized water to the front cleaning roller 341 through the front water spray plate 361, and the second pressure pump 32 is used for sucking the water in the clean water tank 50 and spraying the pressurized water to the rear cleaning roller 342 through the rear water spray plate 362.

The scrubber 100 further includes a control board (not shown) for controlling the operation frequency of the first and second pressure pumps 31 and 32, respectively, to adjust the water addition flow rates of the front and rear

water spray plates

361 and 362, respectively, thereby controlling the water addition amounts of the front and

rear cleaning rollers

341 and 342. Because the water adding of the front cleaning roller 341 and the rear cleaning roller 342 is controlled by the first pressure pump 31 and the second pressure pump 32 respectively, the water adding of the two cleaning rollers is more flexibly controlled, and the control is convenient and effective, thereby ensuring the mopping effect of the floor washing machine.

Referring to fig. 3, the first and second pressure pumps 31 and 32 are respectively disposed on the left and right sides of the casing 37. Specifically, the first pressure pump 31 is disposed on the right side of the housing 37, and the second pressure pump 32 is disposed on the left side of the housing 37, that is, one liquid pump is disposed on each of the left and right sides of the housing 37, and the two liquid pumps in the cleaning seat 30 are reasonably arranged, which is beneficial to the uniform volume and miniaturization of the cleaning seat 30. The positions of the first pressure pump 31 and the second pressure pump 32 may be interchanged, the first pressure pump 31 may be in communication with the rear water jet plate 362, and the second pressure pump 32 may be in communication with the front water jet plate 361, which is not limited herein. The terms "left" and "right" refer to the directions of the arrows shown in fig. 3 as "front" directions, the left side of the body as left, and the right side as right, respectively, when the user operates the floor washing machine 100. In the embodiments of the present application, the terms "upper", "lower", "front", "rear", "left", "right", and the like are used with reference to the state of the floor washing machine shown in fig. 1, and the above description is only for illustrative purposes and should not be construed as limiting the present application.

The first pressure pump 31 and the second pressure pump 32 are both located between the front cleaning roller 341 and the rear cleaning roller 342. Since the front cleaning roller 341 and the rear cleaning roller 342 have a space therebetween to form an existing installation space, the first pressure pump 31 and the second pressure pump 32 are both disposed in the space, and the influence on the volume of the cleaning seat 30 is small, so that the cleaning seat 30 is more compact.

Specifically, the first pressure pump 31 and the second pressure pump 32 are disposed in the housing 37 and are symmetrical to each other, so that the mass distribution of the cleaning seat 30 is balanced, and the cleaning seat is not exposed, and the appearance of the cleaning seat is more beautiful.

In this embodiment, continuing to refer to fig. 3, the cleaning seat includes a three-way valve 35, and the three-way valve 35 includes a first port, a second port, and a third port. Wherein, the first port is communicated with the clean water tank 50 through a first inlet tube 391, the second port is communicated with the water inlet end of the first pressure pump 31 through a second inlet tube 392, and the third port is communicated with the water inlet end of the second pressure pump 32 through a third inlet tube 393. The first booster pump 31 is communicated with the front water spray plate 361 through a first water outlet pipe 394, and the second booster pump 32 is communicated with the rear water spray plate 362 through a second water outlet pipe 395. The first water inlet pipe 391 may also be directly connected to the clean water tank 50, i.e. as a part of the clean water supply pipeline, connected between the three-way valve 35 and the clean water tank 50.

The above is only one embodiment of the present invention, and any other modifications based on the concept of the present invention are considered as the protection scope of the present invention.

Claims

1. A floor scrubber, comprising:

the handle assembly is connected to the body and used for being held by a user;

2. The floor scrubber of claim 1, wherein the draft tube has a central axis, the draft tube extending obliquely upward along the central axis.

3. The scrubber of claim 2, wherein the central axis is angled from the work surface in a range of 30 ° to 70 °.

4. The floor scrubber of claim 2, wherein the draft tube is angled toward the rear scrub roller.

5. The floor scrubber of claim 1, wherein the lower opening is located between the front dirty inlet and the rear dirty inlet.

6. The floor scrubber of claim 5, wherein the lower opening is approximately the same distance from the front dirty inlet and the rear dirty inlet.

7. The floor washing machine of claim 1, wherein the drain further comprises a sump portion disposed below the lower opening, the sump portion having a sump cavity for storing contaminated water flowing down the lower opening after the suction assembly is deactivated.

8. The floor scrubber of claim 7, wherein a projection of the lower opening onto the work surface falls within a range of a projection of the sump chamber onto the work surface.

9. The floor washing machine of claim 7, wherein the forward dirty inlet has a forward adjacent wall at an adjacent intersection with the lower opening, and the rearward dirty inlet has a rearward adjacent wall at an adjacent intersection with the lower opening, and wherein the bottom of the sump portion is configured to be lower than the forward and/or rearward adjacent walls.

10. The floor scrubber of claim 7, wherein the sump portion is integrally formed with the draft tube.