CN215383730U - Water tank structure of floor washing machine and floor washing machine - Google Patents

Abstract

The utility model belongs to the technical field of household appliances, and particularly relates to a water tank structure of a floor washing machine and the floor washing machine, which comprise a sewage tank and a clean water tank, wherein the sewage tank is used for collecting sewage recovered by the floor washing machine, and the clean water tank is used for providing water for washing the floor washing machine; the water purifying tank is arranged in the sewage tank and is of a negative pressure contraction structure, and the water purifying tank contracts inwards when the internal pressure of the water purifying tank is smaller than the external pressure; the water purification tank is provided with a water supply pipe used for being connected with a water pump of the floor washing machine. The floor washing machine comprises the water tank structure. The two water tanks of the floor washing machine only need the installation space of one water tank, so that the overall volume of the floor washing machine can be reduced, the overall cost can be reduced, and the floor washing machine is smaller and more exquisite.

Description

Water tank structure of floor washing machine and floor washing machine

Technical Field

The utility model belongs to the technical field of household appliances, and particularly relates to a water tank structure of a floor washing machine and the floor washing machine.

Background

The floor washing machine is a common household appliance at present, is used for washing and mopping the floor, reduces the workload of a user, and is widely applied and popularized. Two water tanks are arranged in the floor washing machine, one water tank is used for storing water for washing the floor, and the other water tank is used for recovering sewage and fine garbage. Two water tanks of present floor cleaning machine are mutual independent setting, and its space that occupies is big, and then leads to floor cleaning machine whole day bottom bulky.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a water tank structure of a floor washing machine and the floor washing machine, and aims to solve the problem that the existing floor washing machine is large in integral volume due to the fact that two water tanks are arranged.

In order to achieve the above purpose, the water tank structure of the floor washing machine provided by the embodiment of the utility model comprises a sewage tank and a clean water tank, wherein the sewage tank is used for collecting sewage recovered by the floor washing machine, and the clean water tank is used for providing water for washing the floor washing machine; the water purifying tank is arranged in the sewage tank and is of a negative pressure contraction structure, and the water purifying tank contracts inwards when the internal pressure of the water purifying tank is smaller than the external pressure; the water purification tank is provided with a water supply pipe used for being connected with a water pump of the floor washing machine.

Furthermore, the water purifying tank is of a soft rubber inner container structure.

Further, the water purifying tank comprises a connecting plate, a soft rubber bag and a sealing cover; the mouth of the soft rubber bag is hermetically connected to the bottom of the connecting plate, a water gap is formed in the connecting plate, and the sealing cover is used for sealing the water gap; the connecting plate is fixedly arranged at the opening of the sewage tank; the water supply pipe penetrates through the connecting plate and extends into the soft rubber bag.

Further, the sewage tank comprises a cylinder body and a cover body, wherein a connecting ring extending downwards is arranged at the edge of the cover body and used for extending into the opening of the cylinder body, and a sealing ring is sleeved on the connecting ring and used for sealing the opening of the cylinder body; the connecting plate is arranged on the cover body.

Further, the top of lid is provided with the cavity of undercut, the bottom of cavity is provided with the through-hole, the upper end of soft plastic bag passes the through-hole, the oral area of soft plastic bag is outwards turned over and is rolled over and form the spacing collar, the spacing collar laminating is in the bottom of cavity, the connecting plate is located be used for compressing tightly in the cavity the spacing collar.

Further, the water purifying tank comprises a top cover, a water bag and a sealing cover; the sewage tank is of a cylindrical structure; the top cover is used for covering the opening part of the sewage tank; the bottom of the top cover is provided with a connecting part extending downwards, the water bag is sleeved on the connecting part, the top cover is provided with a water port communicated with an inner cavity of the water bag, and the sealing cover is used for covering the water port; the water supply pipe penetrates through the top cover and extends into the water bag.

One or more technical schemes in the water tank structure of the floor washing machine provided by the embodiment of the utility model at least have the following technical effects:

1. a retractable water purifying tank is arranged in the sewage tank, and water is filled into the water purifying tank before the ground is washed, so that the water purifying tank is unfolded and filled in the sewage tank; when the land is washed, water in the clean water tank is pumped out, and sewage formed by the land washing is recycled into the sewage tank; when the water in the water purifying tank is discharged, the water purifying tank shrinks inwards, and the sewage can fill the shrinking space of the water purifying tank; therefore, the two water tanks only need the installation space of one water tank, the whole volume of the floor washing machine can be reduced, the whole cost can be reduced, and the floor washing machine is small and exquisite.

A floor washing machine comprises a floor washing machine water tank, and further comprises a mounting main body, a fan, a water pump, a chassis, a recovery pipe, a water spraying piece, a floor washing roller, a driving mechanism and an electric control assembly; a notch for forming a water tank mounting position is formed in one side of the mounting main body and used for mounting the water tank of the floor washing machine; the notch enables an installation cavity to be formed at the upper end of the installation main body, and the fan is arranged in the installation cavity; a first ventilation opening is formed in the bottom of the mounting cavity, and a second ventilation opening communicated with the first ventilation opening is formed in the top of the sewage tank; the chassis is connected to the bottom end of the mounting main body; an accommodating cavity with an opening at one side is arranged in the chassis, mounting positions extend from two sides of an opening of the accommodating cavity, the floor washing roller is rotatably connected between the two mounting positions, and the driving mechanism is arranged in the accommodating cavity and used for driving the floor washing roller to rotate; the water spraying piece is arranged at the opening part of the accommodating cavity, the water pump is arranged in the mounting main body or the accommodating cavity, the water inlet end of the water pump is connected with the water supply pipe, and the water outlet end of the water pump is connected with the water spraying piece pipeline; the bottom of the sewage tank extends upwards to form an isolation cavity, the bottom of the isolation cavity is provided with a communication position, the upper end of the isolation cavity is provided with a sewage port, one end of the recovery pipe is connected with the communication position, and the other end of the recovery pipe extends to the opening of the accommodating cavity.

Further, an air duct extends upwards from the top of the sewage tank along the second ventilation opening, a filter screen is arranged in the air duct, and the opening of the air duct is used for being attached to the bottom of the mounting cavity; an extension part extends upwards from the edge of the upper end of the sewage tank, an elastic clamping piece is arranged in the extension part, and a bayonet matched with the elastic clamping piece is arranged at the bottom of the mounting cavity; the bottom of the water tank mounting position is provided with an upward extending limiting edge for limiting the bottom of the sewage tank; the side wall of the water tank installation position is provided with a first joint connected with the water pump, and the upper end of the water supply pipe is connected with a second joint used for being connected with the first joint.

Furthermore, a support ring extends downwards from the bottom end of the mounting main body, a bottom cover is arranged at the bottom of the support ring, and the water pump is arranged in a cavity formed by the bottom cover and the support ring; the bottom of the bottom cover is provided with a connecting pipe communicated with the inside of the chassis, and the recovery pipe penetrates through the connecting pipe to be connected with the communicating position.

Furthermore, a baffle is arranged at the opening part of the accommodating cavity, an interface extending inwards is arranged on the baffle, and the recovery pipe is connected in the interface; the water spraying piece is arranged on the baffle.

Further, the water spraying piece comprises a water cavity arranged on the baffle and spray heads distributed at the front end of the water cavity, and the water cavity is connected with the water pump pipeline; the water spraying part also comprises a heating part arranged in the water cavity.

Furthermore, a mounting plate is arranged on the front side of the front end of the chassis, and the floor washing roller is arranged between the two mounting plates; the driving mechanism comprises a driving motor, a driving roller and a transmission part; the driving motor is arranged in the chassis, and the driving rolling shaft is rotatably connected to the opening of the accommodating cavity and is in frictional contact with the floor washing roller; the transmission part is connected with the driving motor and the driving roller.

Furthermore, a partition board is arranged at the opening part of the accommodating cavity, and the driving motor and the driving rolling shaft are respectively positioned at two sides of the partition board; the partition plate is provided with an inward concave groove for avoiding the driving rolling shaft.

Furthermore, the number of the water spraying pieces is two, and one water spraying piece is arranged at the upper end of the partition plate.

One or more technical schemes in the water tank structure of the floor washing machine provided by the embodiment of the utility model at least have the following technical effects:

before washing the ground, filling water into the clean water tank to enable the clean water tank to be spread and filled in the sewage tank; when the ground is washed, the driving mechanism drives the ground washing roller, the water pump sprays water in the water purification tank to the ground washing roller through the water spraying piece, so that the ground washing roller washes the ground, in the washing process, the fan enables the opening part of the accommodating cavity to form strong negative pressure, sewage on the ground and the ground washing roller returns to the sewage tank through the recovery pipe and the isolation cavity, and the recovered sewage fills the space contracted by the water purification tank; according to the floor washing machine, the water purification tank extends into the sewage tank, so that the two water tanks only need the installation space of one water tank, the overall size of the floor washing machine can be reduced, the overall cost can be reduced, and the floor washing machine is small and exquisite.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of a water tank structure of a floor washing machine according to an embodiment of the present invention.

Fig. 2 is a top view of a structure of a water tank of a floor washing machine according to an embodiment of the present invention.

Fig. 3 is a sectional view a-a of fig. 2.

Fig. 4 is a sectional view B-B of fig. 2.

Fig. 5 is a partially enlarged view of fig. 4.

Fig. 6 is an exploded view of a water tank structure of a floor washing machine according to an embodiment of the present invention.

FIG. 7 is a graph showing the results of another embodiment of the structure of the water tank of a floor washing machine according to the present invention.

Fig. 8 is a block diagram of a scrubber according to an embodiment of the present invention.

FIG. 9 is a cross-sectional view of a scrubber provided in accordance with an embodiment of the present invention.

Fig. 10 is a structural view of the mounting body of the floor washing machine according to the embodiment of the present invention.

FIG. 11 is a cross-sectional view of the mounting body of a floor washing machine according to an embodiment of the present invention.

FIG. 12 is a block diagram of a water tank portion of a floor washing machine according to an embodiment of the present invention.

FIG. 13 is a block diagram of the portion of the chassis of the scrubber tank provided in accordance with an embodiment of the present invention.

FIG. 14 is a view showing the internal structure of the chassis portion of the water tank of the floor washing machine according to the embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the embodiments of the present invention, and should not be construed as limiting the utility model.

In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.

In one embodiment of the present invention, referring to fig. 1 to 7, a tank structure 1 of a floor washing machine includes a foul water tank 100 for collecting foul water recovered from the floor washing machine, and a clean water tank 200 for supplying water for washing the floor washing machine with the water. The fresh water tank 200 is provided in the foul water tank 100, and the fresh water tank 200 has a negative pressure contraction structure, i.e., it contracts inward when the pressure inside the fresh water tank 200 is less than the external pressure. The clean water tank 200 is provided with a water supply pipe 210 for connection with a pump of a floor washing machine. The tank of the present embodiment, which employs a collapsible fresh water tank 200 provided in the foul water tank 100, fills the fresh water tank 200 with water before washing the ground, so that the fresh water tank 200 is spread and filled in the foul water tank 100; when washing the ground, the water in the clean water tank 200 is pumped out, and the sewage formed by washing the ground is recycled into the sewage tank 100; when the water in clean water tank 200 is drained, clean water tank 200 is contracted inward and the sewage fills the contracted space of clean water tank 200; therefore, the two water tanks only need the installation space of one water tank, the whole volume of the floor washing machine can be reduced, the whole cost can be reduced, and the floor washing machine is small and exquisite.

Further, the water purification tank 200 is of a soft rubber inner container structure, an organ structure or a telescopic structure.

Further, referring to fig. 4 to 6, an embodiment of the fresh water tank 200 specifically includes a connection plate 201, a soft adhesive bag 202, and a sealing cover 203. The mouth of the soft plastic bag 202 is hermetically connected to the bottom of the connecting plate 201, a water gap is arranged on the connecting plate 201, and the sealing cover 203 is used for sealing the water gap. The connecting plate 201 is fixedly arranged at the opening of the sewage tank 100; the water supply pipe 210 extends into the soft rubber bag 202 through the connecting plate 201. In this embodiment, the water for washing the ground is added to the soft gel bag 202 through the water gap, and after the water is filled, the water gap is sealed by the sealing cover 203. When the water pump pumps out the water in the soft rubber bag 202, the soft rubber bag 202 contracts inwards, so that the sewage can be filled in the sewage tank 100.

Further, referring to fig. 4 to 6, an embodiment of the waste water tank 100 specifically includes a cylinder 101 and a cover 102, a connecting ring 103 extending downward is disposed at an edge of the cover 102, the connecting ring 103 is used for extending into a mouth of the cylinder 101, and a sealing ring 104 is sleeved on the connecting ring 103 for sealing the mouth of the cylinder 101. The connecting plate 201 is provided on the lid 102. In this embodiment, when the foul water tank 100 is cleaned, the cover 102 is opened, so that both the cover 101 and the fresh water tank 200 can be taken out of the foul water tank 100 for cleaning and fresh water can be refilled; and the foul water is directly discharged from the foul water tank 100 and washed with respect to the foul water tank 100, thereby making it convenient to wash the fresh water tank 200 and the foul water tank 100.

Further, referring to fig. 4 to 6, an embodiment of assembling the fresh water tank 200 with the foul water tank 100 specifically includes: the top of the cover body 102 is provided with a cavity 105 which is sunken downwards, the bottom of the cavity 105 is provided with a through hole, the upper end of the soft plastic bag 202 penetrates through the through hole, the opening of the soft plastic bag 202 is turned outwards to form a limiting ring 204, the limiting ring 204 is attached to the bottom of the cavity 105, and the connecting plate 201 is arranged in the cavity 105 and used for compressing the limiting ring 204.

Further, another embodiment of the fresh water tank 200, specifically referring to fig. 1 and 7, includes a top cover 211, a water bag 212, and a sealing cover 213. The wastewater tank 100 has a cylindrical structure. The top cover 211 is adapted to cover the mouth of the waste water tank 100. The bottom of the top cover 211 is provided with a connecting part 214 extending downwards, the water bag 212 is sleeved on the connecting part 214, the top cover 211 is provided with a water gap communicated with the inner cavity of the water bag 212, and the sealing cover 213 is used for covering the water gap. The water supply tube 210 extends into the water bag 212 through the top cover 211.

Referring to fig. 1 to 14, a floor washing machine comprises the floor washing machine water tank of any one of the embodiments, and further comprises a mounting main body 300, a fan 400, a water pump 500, a chassis 600, a recovery pipe (not shown in the figures), a water spraying member 700, a floor washing drum 800, a driving mechanism 900 and an electric control assembly (not shown in the figures). One side of the mounting body 300 is provided with a cut forming a tank mounting location 301 for mounting the scrubber tank 1. The notch forms an installation cavity 302 at the upper end of the installation body 300, and the blower 400 is arranged in the installation cavity 302. A first ventilation opening 303 is formed at the bottom of the mounting cavity 302, and a second ventilation opening 110 communicated with the first ventilation opening 303 is formed at the top of the waste water tank 100. The base plate 600 is coupled to the bottom end of the mounting body 300. The floor washing machine is characterized in that an accommodating cavity 601 with an opening at one side is formed in the chassis 600, mounting positions 602 extend from two sides of a mouth of the accommodating cavity 601, the floor washing roller 800 is rotatably connected between the two mounting positions 602, and the driving mechanism 900 is arranged in the accommodating cavity 601 and used for driving the floor washing roller 800 to rotate. The water spraying member 700 is disposed at the mouth of the accommodating chamber 601, and the water pump 500 is disposed in the mounting body 300 or the accommodating chamber 601. The water inlet end of the water pump 500 is connected to the water supply pipe 210, and the water outlet end is connected to the water spraying member 700. The bottom of the sewage tank 100 extends upwards to form an isolation cavity 111, the bottom of the isolation cavity 111 is provided with a communication position 112, the upper end of the isolation cavity is provided with a sewage port, one end of the recovery pipe is connected with the communication position 112, and the other end of the recovery pipe extends to the opening of the accommodating cavity 601. In this embodiment, water is filled in fresh water tank 200 before washing the ground, so that fresh water tank 200 is spread and filled in foul water tank 100. When the floor is washed, the driving mechanism 900 is controlled by the electric control assembly to drive the floor washing roller 800, the water pump 500 sprays water in the water purifying tank 200 to the floor washing roller 800 through the water spraying piece 700, so that the floor washing roller 800 washes the floor, and in the washing process, the fan 400 enables the opening part of the accommodating cavity 301 to form strong negative pressure, so that the sewage on the floor and the floor washing roller 800 returns to the sewage tank 100 through the recovery pipe and the isolation cavity 111, specifically, when the sewage and the sundries enter the isolation cavity 111, the sewage and the sundries enter the sewage tank 100 through the sewage port, so that the sewage and the sundries are collected in the sewage tank 100. The recovered sewage fills the space where the clean water tank 200 is contracted. According to the floor washing machine, the water purification tank 200 extends into the sewage tank 100, so that only one installation space of one water tank is needed for two water tanks, the overall size of the floor washing machine can be reduced, the overall cost can be reduced, and the floor washing machine is small and exquisite.

Further, referring to fig. 9 and 12, an air duct 114 extends upward along the second air vent 110 at the top of the waste water tank 100, a filter screen is disposed in the air duct 114, and an opening of the air duct 114 is used for being attached to the bottom of the mounting cavity 302. An extending part 115 extends upwards from the edge of the upper end of the sewage tank 100, an elastic clamping piece 116 is arranged in the extending part 115, and a bayonet matched with the elastic clamping piece 116 is arranged at the bottom of the mounting cavity 302. The bottom of the water tank mounting position 301 is provided with an upward extending limiting edge 304 for limiting the bottom of the sewage tank 100; a first joint 305 connected with the water pump 500 is disposed on a side wall of the water tank installation site 301, and a second joint 117 is connected to an upper end of the water supply pipe 110 and is used for being connected with the first joint 305. In this embodiment, the water tank is detachable, specifically, when the water tank is installed in the water tank installation position 301, the bottom of the water tank is limited in the limiting edge 304, the elastic clamping piece 116 is clamped in the clamping opening, and meanwhile, the second connector 117 is connected with the first connector 305, so that the water pump 500 is communicated with the purified water tank 200; thereby realizing the disassembly and assembly of the water tank.

Further, referring to fig. 10 and 11, a support ring 306 extends downward from the bottom end of the mounting body 300, a bottom cover 307 is disposed at the bottom of the support ring 306, and the water pump 500 is disposed in a cavity formed by the bottom cover 307 and the support ring 306. The bottom of the bottom cover 307 is provided with a connecting pipe 308 communicated with the inside of the bottom plate 600, and the recovery pipe passes through the connecting pipe 308 to be communicated with the communication position 112.

Further, referring to fig. 13 and 14, a baffle 603 is disposed at a mouth of the accommodating cavity 601, an interface 604 extending inward is disposed on the baffle 603, and the recovery pipe is connected in the interface 604. The water spraying member 700 is disposed on the baffle 603. In this embodiment, the reversely extending interface 604 is disposed on the baffle 603, and the recycling pipe is connected to the interface 604, so that the sewage can completely enter the recycling pipe through the interface 604, and the sewage is prevented from being sucked into the accommodating chamber 601.

Further, referring to fig. 13 and 14, the water spray 700 includes a water chamber 701 disposed on the baffle 603 and spray heads 702 distributed at a front end of the water chamber 701, and the water chamber 701 is connected to the water pump 500. In this embodiment, water in clean water tank 200 is pumped into water chamber 701 by water pump 500, and water in water chamber 701 is sprayed out through each spray head 702.

Further, the water spraying member 700 further includes a heating member disposed in the water chamber 701. In this embodiment, the heating element heats water into steam and sprays the steam onto the floor washing drum 800 and the ground, thereby increasing the floor washing effect.

Further, referring to fig. 13 and 14, a mounting plate 606 is provided at a front side of a front end of the chassis 600, and the floor washing drum 800 is disposed between the mounting plates 606. The driving mechanism 900 includes a de-driving motor 901, a driving roller 902, and a transmission 903. The driving motor 901 is arranged in the chassis 600, and the driving roller 902 is rotatably connected to the mouth of the accommodating cavity 601 and is in frictional contact with the floor washing drum 800. The transmission member 903 is connected to the driving motor 901 and the driving roller 902. In this embodiment, the driving motor 901 drives the ground washing drum 800 to rotate, so as to achieve the function of washing the ground. And the ground washing roller 800 is installed between the two installation plates 606, so that the length of the ground washing roller 800 can be close to that of the chassis 600, and further, the wall corner and other positions can be cleaned, and the cleaning effect is ensured.

Further, a partition 607 is further disposed at the mouth of the accommodating cavity 601, and the driving motor 900 and the driving roller 902 are respectively located at two sides of the partition 607. The spacer 607 is provided with an inwardly recessed groove for avoiding the driving roller 902. In this embodiment, the partition 607 prevents the sewage from entering the accommodating chamber 601 to pollute the driving mechanism.

Further, referring to fig. 13 and 14, the number of the water spraying members 700 is two, and one water spraying member 700 is disposed at the upper end of the separation plate 607. In this embodiment, the water spray member 700 is provided on the partition 607, so that the floor washing drum 800 can be completely cleaned.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (14)

1. A water tank structure of a floor washing machine comprises a sewage tank and a clean water tank, wherein the sewage tank is used for collecting sewage recovered by the floor washing machine, and the clean water tank is used for providing water for washing the floor washing machine; the water purifying device is characterized in that the water purifying tank is arranged in the sewage tank, the water purifying tank is of a negative pressure contraction structure, and the water purifying tank contracts inwards when the pressure inside the water purifying tank is smaller than the external pressure; the water purification tank is provided with a water supply pipe used for being connected with a water pump of the floor washing machine.

2. The floor washing machine tank structure according to claim 1, characterized in that: the water purifying tank is of a soft rubber inner container structure.

3. The floor washing machine tank structure according to claim 1, characterized in that: the water purifying tank comprises a connecting plate, a soft rubber bag and a sealing cover; the mouth of the soft rubber bag is hermetically connected to the bottom of the connecting plate, a water gap is formed in the connecting plate, and the sealing cover is used for sealing the water gap; the connecting plate is fixedly arranged at the opening of the sewage tank; the water supply pipe penetrates through the connecting plate and extends into the soft rubber bag.

4. The floor washing machine tank structure according to claim 3, characterized in that: the sewage tank comprises a cylinder body and a cover body, wherein a connecting ring extending downwards is arranged at the edge of the cover body and used for extending into the opening of the cylinder body, and a sealing ring is sleeved on the connecting ring and used for sealing the opening of the cylinder body; the connecting plate is arranged on the cover body.

5. The floor washing machine water tank structure according to claim 4, characterized in that: the top of lid is provided with the cavity of undercut, the bottom of cavity is provided with the through-hole, the upper end of soft plastic bag passes the through-hole, the oral area of soft plastic bag is outwards turned over and is rolled over and form the spacing collar, the spacing collar laminating is in the bottom of cavity, the connecting plate is located be used for compressing tightly in the cavity the spacing collar.

6. The floor washing machine tank structure according to claim 1, characterized in that: the water purifying tank comprises a top cover, a water bag and a sealing cover; the sewage tank is of a cylindrical structure; the top cover is used for covering the opening part of the sewage tank; the bottom of the top cover is provided with a connecting part extending downwards, the water bag is sleeved on the connecting part, the top cover is provided with a water port communicated with an inner cavity of the water bag, and the sealing cover is used for covering the water port; the water supply pipe penetrates through the top cover and extends into the water bag.

7. A floor washing machine is characterized by comprising the water tank structure of the floor washing machine as claimed in any one of claims 1 to 6, and further comprising a mounting main body, a fan, a water pump, a chassis, a recovery pipe, a water spraying piece, a floor washing roller, a driving mechanism and an electric control assembly; a notch for forming a water tank mounting position is formed in one side of the mounting main body and used for mounting the water tank of the floor washing machine; the notch enables an installation cavity to be formed at the upper end of the installation main body, and the fan is arranged in the installation cavity; a first ventilation opening is formed in the bottom of the mounting cavity, and a second ventilation opening communicated with the first ventilation opening is formed in the top of the sewage tank; the chassis is connected to the bottom end of the mounting main body; an accommodating cavity with an opening at one side is arranged in the chassis, mounting positions extend from two sides of an opening of the accommodating cavity, the floor washing roller is rotatably connected between the two mounting positions, and the driving mechanism is arranged in the accommodating cavity and used for driving the floor washing roller to rotate; the water spraying piece is arranged at the opening part of the accommodating cavity, the water pump is arranged in the mounting main body or the accommodating cavity, the water inlet end of the water pump is connected with the water supply pipe, and the water outlet end of the water pump is connected with the water spraying piece pipeline; the bottom of the sewage tank extends upwards to form an isolation cavity, the bottom of the isolation cavity is provided with a communication position, the upper end of the isolation cavity is provided with a sewage port, one end of the recovery pipe is connected with the communication position, and the other end of the recovery pipe extends to the opening of the accommodating cavity.

8. The floor scrubber of claim 7, wherein: an air duct extends upwards from the top of the sewage tank along the second ventilation opening, a filter screen is arranged in the air duct, and the opening of the air duct is attached to the bottom of the mounting cavity; an extension part extends upwards from the edge of the upper end of the sewage tank, an elastic clamping piece is arranged in the extension part, and a bayonet matched with the elastic clamping piece is arranged at the bottom of the mounting cavity; the bottom of the water tank mounting position is provided with an upward extending limiting edge for limiting the bottom of the sewage tank; the side wall of the water tank installation position is provided with a first joint connected with the water pump, and the upper end of the water supply pipe is connected with a second joint used for being connected with the first joint.

9. The floor scrubber of claim 7, wherein: a support ring extends downwards from the bottom end of the mounting main body, a bottom cover is arranged at the bottom of the support ring, and the water pump is arranged in a cavity formed by the bottom cover and the support ring; the bottom of the bottom cover is provided with a connecting pipe communicated with the inside of the chassis, and the recovery pipe penetrates through the connecting pipe to be connected with the communicating position.

10. The floor washing machine according to any one of claims 7-9, characterized in that: a baffle is arranged at the opening part of the accommodating cavity, an interface extending inwards is arranged on the baffle, and the recovery pipe is connected in the interface; the water spraying piece is arranged on the baffle.

11. The floor scrubber of claim 10, wherein: the water spraying piece comprises a water cavity arranged on the baffle and spray heads distributed at the front end of the water cavity, and the water cavity is connected with the water pump pipeline; the water spraying part also comprises a heating part arranged in the water cavity.

12. The floor washing machine according to any one of claims 7-9, characterized in that: the front side of the front end of the chassis is provided with a mounting plate, and the ground washing roller is arranged between the two mounting plates; the driving mechanism comprises a driving motor, a driving roller and a transmission part; the driving motor is arranged in the chassis, and the driving rolling shaft is rotatably connected to the opening of the accommodating cavity and is in frictional contact with the floor washing roller; the transmission part is connected with the driving motor and the driving roller.

13. The scrubber of claim 12, wherein: the opening part of the accommodating cavity is also provided with a partition plate, and the driving motor and the driving rolling shaft are respectively positioned at two sides of the partition plate; the partition plate is provided with an inward concave groove for avoiding the driving rolling shaft.

14. The floor scrubber of claim 13, wherein: the number of the water spraying pieces is two, and one water spraying piece is arranged at the upper end of the partition plate.

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