CN209951157U - Floor nozzle for a wet cleaning appliance - Google Patents

Abstract

The utility model discloses a ground suction nozzle for wet cleaning equipment, which comprises a shell with a suction opening, a fluid output channel and a small particle liquid catching device arranged at the lower part of the shell, wherein the small particle liquid catching device is elastically connected at the lower part of the shell, a suction channel communicated with the suction opening is defined on the shell, the suction channel can suck dirty fluid on the ground to be cleaned into the suction channel by means of suction force, the small particle liquid catching device comprises a front flexible scraping lip strip and a rear flexible scraping lip strip which are arranged side by side from front to back, the front flexible scraping lip strip and the rear flexible scraping lip strip both extend along the left and right directions, a liquid inlet gap is formed between the front flexible scraping lip strip and the rear flexible scraping lip strip, the liquid inlet gap is communicated with the suction channel, the small particle liquid catching device floats along the up and down direction, so that the front flexible scraping lip strip and the rear flexible scraping lip strip are always tightly attached to, has good water absorption effect.

Description

Floor nozzle for a wet cleaning appliance

Technical Field

The utility model belongs to the technical field of ground cleaning device, in particular to a ground suction nozzle for wet-type cleaning device.

Background

Conventional wet cleaning devices, such as floor washers, typically utilize a suction nozzle to clean and soil the floor to be cleaned. In the prior art, such equipment usually needs the user to repeatedly and continuously move the suction nozzle back and forth to suck up dirty liquid on the ground as far as possible, but because the suction is limited and the structure of the suction nozzle is arranged, the small particle liquid remained on the ground is difficult to suck up, so that the ground drying effect is poor after cleaning, and the residual water stain can easily cause secondary pollution.

Chinese patent publication No. CN108652519A discloses a "floor brush machine cleaning and dust collecting machine", which is operated by pumping clean water into a clean water tank through a water pump and spraying the clean water into a rolling brush cavity through a water spray nozzle, so as to wet a rolling brush and facilitate the rolling brush to scrub the ground. For the convenience of clearing away the foul solution on ground, on this washing dust catcher's scrubbing brush, set up preceding, two sets of wind channels in back and the preceding, the back dust blocking piece that correspond and accomplish the soil pick-up work, specifically do: when the floor brush moves forwards, the front dust-blocking piece is opened, large-particle dust and wastewater enter the forward air inlet and the rolling brush cavity from the front dust-blocking piece, and the rear dust-blocking piece vertically scrapes the ground and blocks the dust and wastewater which are not cleaned in time in the floor brush; when the scrubbing brush moves backwards, the rear dust-blocking piece is opened, large-particle dust and wastewater enter the rear air inlet and the rolling brush cavity from the rear air inlet, and the front dust-blocking piece vertically scrapes the ground and blocks the dust and wastewater inside the scrubbing brush, which are not cleaned in time, inside the scrubbing brush. In a word, this washs dust absorption scrubbing brush and washs dust catcher through the setting of two air intakes, double air duct and wind channel spacer to cooperation front and back fender dirt piece, make the even balance of flow, the suction of front and back air intake. The front air inlet, the rear air inlet and the suction capacity are not distinguished, the floor brush can only ensure that the same cleaning and dirt absorbing functions can be realized in the forward and backward moving process of the floor brush, and small-particle liquid remained on the ground cannot be thoroughly removed.

One "surface cleaning apparatus" disclosed in publication No. CN206434268U defines a suction nozzle in its brush roll chamber in fluid communication with the foot conduit and is configured to draw liquid and debris from the brush roll and surface to be cleaned. The suction nozzle defines a dirty air inlet through a working air path or a recovery path of the vacuum cleaner. The suction nozzle is further fluidly connected to the canister assembly by a foot conduit and a flexible conduit hose; the rear scraping blade is arranged at the rear part of the brush roller, but after the brush roller cleans and sucks dirt on the ground to be cleaned, a small part of sewage still flows to the rear scraping blade, and then the scraping blade only plays a role in scraping the ground to be cleaned, and the dirt sucking capability is omitted, so that water stain can still be remained on the ground to be cleaned, and the use of a user on the ground is influenced.

In addition, because the subaerial unevenness's such as ceramic tile seam microcosmic surface that often has, the distance of seam crossing suction inlet to ground can change, and this also can to a great extent influence dust absorption effect, and the too big dust absorption efficiency of distance reduces, can not effectively clean, and the too little frictional force that then can make between flexible lip strip and the ground of scraping increases, and the operation is more arduous.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model aims at providing a can with treat clean ground real time contact and clean better ground suction nozzle that is used for wet-type cleaning device of effect.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme:

a floor nozzle for a wet cleaning appliance, comprising:

a housing defining a suction channel therein, said suction channel having an opening in an underside of said housing, said suction channel being capable of drawing dirt and liquid particles from a floor surface to be cleaned into said opening by means of a suction force;

the fluid output channel is used for outputting cleaning fluid outwards;

the small particle liquid catching device is arranged on the lower portion of the shell and is positioned in front of or behind the opening, the small particle liquid catching device comprises a front flexible scraping lip strip and a rear flexible scraping lip strip which are arranged side by side in the front and the rear, the front flexible scraping lip strip and the rear flexible scraping lip strip both extend in the left-right direction, a liquid inlet gap is formed between the front flexible scraping lip strip and the rear flexible scraping lip strip, and the liquid inlet gap is communicated with the suction channel;

the method is characterized in that: the ground suction nozzle also comprises a floating mechanism, and the small particle liquid catching device is elastically arranged at the lower part of the shell through the floating mechanism, so that the front flexible scraping lip strip and the rear flexible scraping lip strip are always tightly attached to the ground to be cleaned.

Among the above-mentioned technical scheme, preferred, tiny particle liquid trapping apparatus include a base, preceding flexibility scrape the lip strip and the back flexibility scrape the lip strip and all install the base on, the base on be provided with the communicating perforating hole in feed liquor gap, the perforating hole with suction channel between be connected with the bellows.

The floating mechanism comprises a return spring which is abutted and contacted between the bottom of the shell and the base.

In the above technical solution, preferably, the floating mechanism further includes a guide post fixedly disposed at the bottom of the housing and extending in the vertical direction, and a slider slidably disposed on the guide post, and the base and the slider are fixed to each other.

In the above technical solution, preferably, the return spring is a compression spring or a spring plate.

The lower edges of the front flexible scraping lip strip and the rear flexible scraping lip strip protrude out of the lower surface of the shell.

Preceding flexible lip strip of scraping have one and be located preceding the limit of scraping of bottommost, flexible lip strip of scraping of back have one and be located the back of bottommost and scrape the limit, preceding scrape the limit and scrape the limit with the back and all be in the planar below in opening place to make when the ground suction nozzle is used on treating clean ground, preceding scrape limit and/or back scrape partly on the limit with treat clean ground interference fit, preceding scrape limit and/or back scrape another part on the limit with treat and clean ground between form at least one narrow passageway, tiny particle liquid can via narrow passageway inhale the feed liquor gap in.

In the above technical solution, preferably, when the floor nozzle is used on a floor to be cleaned, a part of the front scraping edge is in interference fit with the floor to be cleaned, and at least one narrow channel is formed between another part of the front scraping edge and the floor to be cleaned, and the rear scraping edge is in interference fit with the floor to be cleaned.

In the above technical solution, preferably, the front scraping edge has a plurality of gaps penetrating from front to back, and the gaps are communicated with the liquid inlet gap; when the ground suction nozzle is used on the ground to be cleaned, the front scraping edge of the part between every two adjacent notches is in interference fit with the ground to be cleaned, and the corresponding narrow channel is formed between each notch and the ground to be cleaned.

In the above technical solution, preferably, a plurality of protrusions are arranged on the front surface of the front scraping edge at intervals along the left-right direction; when the ground suction nozzle is used on the ground to be cleaned, the protrusions are in interference fit with the ground to be cleaned, and a corresponding narrow channel is formed between a part of the front scraping edge between every two adjacent protrusions and the ground to be cleaned.

The utility model discloses a flexible lip strip of scraping in the front constructs a feed liquor gap that is linked together with the suction channel between the flexible lip strip of scraping in the back, make in the tiny particle liquid trapping apparatus can inhale the suction channel with treating the subaerial liquid particle of cleanness, through setting up tiny particle liquid trapping apparatus elasticity in the casing lower part, make preceding flexible lip strip of scraping and back flexible lip strip of scraping all the time with treat that clean ground is closely laminated, can adapt to the ground of unevenness, good water absorption effect has, and littleer frictional force, the cleaning efficiency is higher more laborsaving.

Drawings

Fig. 1 is a perspective view of embodiment 1 of the present invention;

FIG. 2 is an exploded schematic view of the floor nozzle of FIG. 1;

FIG. 3 is a schematic view of the internal structure of the floor nozzle of embodiment 1 of the present invention;

FIG. 4 is a top cross-sectional schematic view of the floor nozzle of FIG. 1;

FIG. 5 is a schematic cross-sectional view of the small particle liquid trap shown in FIG. 2;

FIG. 6 is an exploded schematic view of the front and rear flexible scraping lip strips of the small particle liquid trap shown in FIG. 2;

FIG. 7 is a schematic cross-sectional view of the small particle liquid trap shown in FIG. 3;

FIG. 8 is a schematic view of the front and rear flexible scraping lip strips of the small particle liquid catch assembly shown in FIG. 3 as the floor nozzle is moved forward over the floor to be cleaned;

FIG. 9 is an enlarged partial schematic view at A of FIG. 8;

FIG. 10 is a schematic view of the front and rear flexible scraping lip strips of the small particle liquid catch assembly shown in FIG. 3 as the floor nozzle is moved rearwardly over the floor to be cleaned;

FIG. 11 is an enlarged partial schematic view at B of FIG. 10;

FIG. 12 is a schematic left sectional view of a floor nozzle according to embodiment 2 of the present invention;

fig. 13 is a schematic perspective view of a small particle liquid trap device according to embodiment 2 of the present invention;

FIG. 14 is a schematic cross-sectional view of the liquid catch device shown in FIG. 13 (showing the inner wall surface of the front wiper lip;

FIG. 15 is an exploded schematic view of the front and rear flexible scraping lip strips of the small particle liquid trap shown in FIG. 13;

FIG. 16 is a schematic cross-sectional view of the small particle liquid trap shown in FIG. 12;

FIG. 17 is a schematic view of the front and rear flexible scraping lip strips of the small particle liquid catch assembly shown in FIG. 12 as the floor nozzle is moved forward over the floor to be cleaned;

FIG. 18 is an enlarged partial schematic view at C of FIG. 17;

FIG. 19 is a schematic view of the front and rear flexible scraping lip strips of the small particle liquid catch assembly shown in FIG. 12 as the floor nozzle is moved rearwardly over the floor to be cleaned;

FIG. 20 is an enlarged partial schematic view at E of FIG. 19;

wherein: 100. a ground suction nozzle; 11. a housing; 12. rolling and brushing; 13. a small particle liquid capture device; 14. a drive motor; 15. a suction channel; 16. an opening; 17. a base; 18. a front flexible lip scraping strip; 19. a rear flexible lip scraping strip; 20. front scraping; 21. scraping edges; 22. a liquid inlet gap; 23. a narrow passageway; 24. a notch; 25. separating ribs; 26. a protrusion; 27. a recess; 28. a through hole; 29. a roller brush cavity; 30. a front support wheel; 31. a rear support wheel; 32. a floating mechanism; 33. a flexible hose; 34. a return spring; 35. a guide post; 36. a slide block.

Detailed Description

To explain the technical content, structural features, achieved objects and functions of the present invention in detail, the following detailed description is made with reference to the accompanying drawings.

Example 1

The floor nozzle 100 of the present embodiment is primarily intended for use in a wet cleaning apparatus such as a floor cleaning machine, a floor scrubber, and the like, and embodiment 1 will be described in detail with reference to fig. 1-11. In this embodiment, the upper, lower, left, right, front and rear are respectively corresponding to the position relationships of the floor suction nozzle shown in fig. 1 and 2, and the axial direction is the direction in which the rolling brush shown in fig. 2 extends left and right.

As shown in fig. 1, 2 and 4, the floor nozzle 100 includes a housing 11, a fluid outlet channel (not shown), a roller brush 12, a small particle fluid capturing device 13 and a driving device 14.

The housing 11 is provided at the front side thereof with a roll brush chamber 29, and the roll brush 12 is installed in the roll brush chamber 29 and rotated by the driving motor 14. A suction channel 15 is defined between the front side and the rear side of the housing 11, the suction channel 15 having an opening 16 at the lower side of the housing 11, the lower end portion of the drum brush 12 protruding outside the opening 16, the drum brush 12 being adapted to contact the floor to be cleaned and to pick up dirt and liquid particles from the floor to be cleaned during rotation of the drum brush 12 and to convey them to the opening 16. The suction channel 15 is capable of sucking dirt and liquid particles on the floor surface to be cleaned from the opening 16 into it by means of a suction force. In particular, when the floor nozzle is used on a wet cleaning appliance, its suction channel 15 communicates with a suction unit on the wet cleaning appliance, so that the suction action is performed by means of the suction unit generating a suction force of an air flow entering the suction channel 15 from the opening 16. In order to keep the opening 16 having a high suction force on the floor surface to be cleaned, it is preferred that there is a gap of 1-3mm in height between the opening 16 and the floor surface to be cleaned when the floor nozzle is used on the floor surface to be cleaned.

The liquid output channel is in fluid communication with a cleaning liquid supply system on the wet cleaning device, the cleaning liquid supply system generally comprises a liquid supply tank for storing the cleaning liquid, a pump for inputting the cleaning liquid in the liquid supply tank into the liquid output channel, and a liquid spray nozzle which is communicated with the liquid output channel and is used for outputting the cleaning liquid to the ground to be cleaned or the rolling brush 12, wherein the structures of the liquid output channel and the liquid spray nozzle are that the ground to be cleaned is cleaned by the arrangement on the ground suction nozzle, and the arrangement position can be realized in various ways, for example, the liquid output channel is arranged outside the shell, the liquid spray nozzle is arranged on the upper part of the shell and positioned on the front side of the opening, and the liquid spray nozzle outputs the cleaning liquid towards the ground to be cleaned; can also be with liquid output channel setting in the inside of casing, set up hydrojet on the internal face in casing round brush chamber, the hydrojet exports the cleaning solution towards on the round brush to moist round brush treats clean ground and scrubs, and above structure is prior art, aims at understanding the utility model discloses, do not give unnecessary details.

As shown in fig. 2 and 3, the small particle liquid trap 13 is disposed at the lower part of the housing 11 and behind the opening 16, and the small particle liquid trap 13 includes a base 17, a front flexible scraping lip strip 18 and a rear flexible scraping lip strip 19 mounted on the base 17. The lower edges of the front and rear flexible wiping lip strips 18, 19 project from the lower surface of the housing 11. The base 17 has a recess 27 in the middle of the base, the base 17 has a pair of through holes 28 on opposite side walls of the recess 27, the pair of through holes 28 are communicated with the suction passage 15 through a flexible hose 33, and the flexible hose 33 is used to keep the pair of through holes 28 airtight with the suction passage 15 all the time in the case where the small particle liquid trap 13 floats up and down. Specifically, the upper portions of the pair of through holes 28 are joined to form a pair of ports, and the nozzle of the flexible hose 33 is fitted to the pair of ports, so that the pair of through holes 28 are respectively communicated with the suction passage 15. A floating mechanism 32 is provided between the lower portion of the housing 11 and the small particle liquid trap 13. The floating mechanism 32 is used for elastically floating the small particle liquid catching device 13, so that the front flexible scraping lip strip 18 and the rear flexible scraping lip strip 19 are always tightly attached to the ground to be cleaned.

Specifically, the floating mechanism 32 includes a guide post 35 fixedly disposed at the bottom of the housing 11 and extending in the up-down direction, and a slider 36 slidably disposed on the guide post 35, the base 17 and the slider 36 are fixed to each other, a return spring 34 is disposed between the bottom of the housing 11 and the base 17 in a abutting contact manner, as shown in fig. 3, the return spring 34 is a compression spring, when a step or a protrusion occurs on the ground to be cleaned, the return spring 34 is compressed, the small particle liquid catching device 13 is flexibly raised, it is ensured that the front flexible scraping lip strip 18 and the rear flexible scraping lip strip 19 can still be tightly attached to the ground, when the ground returns to be flat, the spring is reset, and the small particle liquid catching device 13 returns to the original height. In other embodiments of the present application, the return spring 34 may be replaced by a spring plate, a tension spring, a torsion spring, or the like, and the floating mechanism may be designed as a suspended structure.

As shown in fig. 5 and 6, the front flexible scraping lip strip 18 and the rear flexible scraping lip strip 19 are arranged side by side in front and back and both extend in the left-right direction, the front flexible scraping lip strip 18 has a front scraping edge 20 located at the lowermost end, the rear flexible scraping lip strip 19 has a rear scraping edge 21 located at the lowermost end, wherein the front scraping edge 20 and the rear scraping edge 21 are both located below the plane of the opening 16, a liquid inlet gap 22 is formed between the front flexible scraping lip strip 18 and the rear flexible scraping lip strip 19, and the liquid inlet gap 22 is communicated with the suction channel 15. In order to satisfy the liquid suction capability of the liquid inlet slit 22 under the low power suction condition, the width D of the liquid inlet slit 22 in this example is set to be between 0.5 and 5 mm.

As shown in fig. 3 and 7 to 11, when the floor nozzle is used on the floor to be cleaned, a part of the front scraping edge 20 is in interference fit with the floor to be cleaned, another part of the front scraping edge forms at least one narrow channel 23 with the floor to be cleaned, at least a part of the rear scraping edge 21 is in interference fit with the floor to be cleaned, and small-particle liquid can be sucked into the liquid inlet gap 22 through the narrow channel 23. The term "interference fit" as used herein means that when the floor nozzle is used on the floor to be cleaned, the front scraping edge 20 or the rear scraping edge 21 will be pressed against the floor after being deformed, that is, when the floor nozzle is not in contact with the floor, the front scraping edge 20 or the rear scraping edge 21 is in a natural state and is located at a position lower than a "base surface" where the bottom of the nozzle is pressed against the floor, and the "base surface" in this case is defined by lower edges of the front and rear sets of support wheels 30 and 31.

Specifically, as shown in fig. 8 and 9, the outer wall surface of the front scraping edge 20 and the outer wall surface of the rear scraping edge 21 are both provided with protrusions 26, when the floor suction nozzle is used on the floor to be cleaned and moves forward, all the protrusions 26 on the front scraping edge 20 are in interference fit with the floor to be cleaned, a narrow channel 23 is formed between a part between two adjacent protrusions 26 on the front scraping edge 20 and the floor to be cleaned, and then substantially all the rear scraping edge 21 is in interference fit with the floor to be cleaned, so that small liquid particles on the floor to be cleaned can only be sucked into the liquid inlet gap 22 from the narrow channel 23 on one side of the front scraping edge 20 and finally be sucked away by the suction channel 15. Referring to fig. 10 and 11, when the floor nozzle is used on the floor to be cleaned and moves backward, all the protrusions 26 on the rear scraping edge 21 are in interference fit with the floor to be cleaned, a narrow channel 23 is formed between the part between two adjacent protrusions 26 on the rear scraping edge 21 and the floor to be cleaned, and substantially all the front scraping edge 20 is in interference fit with the floor to be cleaned, so that liquid particles on the floor to be cleaned can be sucked into the liquid inlet gap 22 only from the narrow channel 23 on one side of the rear scraping edge 21 and finally is sucked away by the suction channel 15.

In order to suck the liquid particles on the floor to be cleaned away as much as possible and keep the floor to be cleaned dry, the interference between the front scraping edge 20 and the floor to be cleaned is 0.5-1.5mm, and the interference between the rear scraping edge 21 and the floor to be cleaned is 1-2 mm. The rear scraping edge 21 is preferably positioned lower than the front scraping edge 20. The interference magnitude is as follows: when the ground suction nozzle is not in contact with the ground, the front scraping edge 20 or the rear scraping edge 21 is lower than the height of a base plane defined by the front and rear groups of supporting wheels 34 and 35; when the ground suction nozzle is contacted with the ground, the front scraping edge 20 or the rear scraping edge 21 is tightly attached to the ground and elastically deforms, and the elastic deformation amount deforms within the range of interference.

In order to avoid too close contact between the front flexible wiping lip strip 18 and the rear flexible wiping lip strip 19, which may result in too narrow inlet gap 22 or even in the contact of the two strips to form an air-tight seal, the front flexible wiping lip strip 18 and/or the rear flexible wiping lip strip 19 are provided with a plurality of spacing ribs 25 for spacing the front flexible wiping lip strip 18 and the rear flexible wiping lip strip 19 back and forth. The size of the spacing rib 25 is required to meet the requirement that the width D of the liquid inlet gap 22 is between 0.5 and 5mm, namely, the width of the front flexible scraping lip strip 18 and the width of the rear flexible scraping lip strip 19 in the front-rear direction are always limited to be between 0.5 and 5mm through the spacing rib 25.

Example 2

In order to simplify the description and avoid redundant description, this embodiment only describes the differences from embodiment 1, and as shown in fig. 12 and 13, embodiment 2 differs from embodiment 1 in that the front scraping edge 20 has a plurality of front-back through notches 24, the notches 24 communicate with the liquid inlet gap 22, a plurality of spacers 25 are provided only on the inner wall surface of the front scraping edge 20, the plurality of spacers 25 are arranged at equal intervals along the length direction of the front scraping edge 20, and protrusions 26 are provided only on the outer wall surface of the rear scraping edge 21. Preferably, two gaps 24 are provided between two adjacent spacer ribs 25. Referring to fig. 12, 15 and 16, when the floor nozzle is used on the floor to be cleaned, the portion between two adjacent notches 24 on the front scraping edge 20 is in interference fit with the floor to be cleaned, and a narrow channel 23 is formed between the notches 24 and the floor to be cleaned. Preferably, the height of the gap 24 is 0.5-1 mm.

Specifically, as shown in fig. 17 and 18, when the floor suction nozzle is used on the floor to be cleaned and moves forward, a narrow channel 23 is formed between a gap 24 between two adjacent ribs 25 on the front scraping edge 20 and the floor to be cleaned, a portion of the front scraping edge 20 except the gap 24 is in interference fit with the floor to be cleaned, and all the ribs 25 on the inner wall surface of the front scraping edge 20 are in abutting contact with the inner wall surface of the rear scraping edge 21, so that a distance for the air flow to pass through is always reserved between the front scraping edge 20 and the rear scraping edge 21, and substantially all the rear scraping edge 21 is in interference fit with the floor to be cleaned, so that small liquid particles on the floor to be cleaned can be sucked into the liquid inlet gap 22 only from the narrow channel 23 on one side of the front scraping edge 20 and are finally sucked away by the suction channel 15. As shown in fig. 19 and 20, when the floor suction nozzle is used on the floor to be cleaned and moves backward, the front scraping edge 21 is in interference fit with the floor to be cleaned, a narrow channel 23 is formed between a part between two adjacent protrusions 26 on the rear scraping edge 21 and the floor to be cleaned, and the inner wall surface of the part of the rear scraping edge 21 except the protrusions 26 is fitted with and blocks all the gaps 24 of the front scraping edge 20, so that small liquid particles on the floor to be cleaned can be sucked into the liquid inlet gap 22 only from the narrow channel 23 on one side of the rear scraping edge 21 and are finally sucked away by the suction channel 15.

In the ground suction nozzle in the scheme, the opening of the suction channel on the front side of the ground suction nozzle is mainly used for sucking and removing large-particle liquid dirt on the ground to be cleaned, and the small-particle liquid which is not sucked up by the opening of the suction channel can be supplemented and sucked by the small-particle liquid catching device, so that the ground to be cleaned is kept dry. In both the above embodiments 1 and 2, the rolling brush is disposed at the opening of the suction channel, and the large-particle liquid on the ground to be cleaned is picked up and sent to the opening by the rolling brush, in other embodiments, the rolling brush may not be disposed, and the flat suction nozzle may be disposed to connect with the suction channel instead of the rolling brush to suck the large-particle liquid on the ground to be cleaned, and then the small-particle liquid catching device on the rear side is used to suck the dirt on the ground to be cleaned for the second time, so as to remove the small-particle liquid on the ground to be cleaned, thereby keeping the ground to be cleaned dry. Further, in addition to the structures of the front and rear flexible lip strips described in the above embodiments 1 and 2, in other embodiments, a notch or a protrusion structure may be provided only on the front flexible lip strip to form a narrow passage with the floor to be cleaned.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims (10)

1. A floor nozzle for a wet cleaning appliance, comprising:

-a housing (11), said housing (11) defining a suction channel (15), said suction channel (15) having an opening (16) in the underside of said housing (11), said suction channel (15) being capable of drawing dirt and liquid particles from a floor surface to be cleaned into said opening (16) by means of a suction force;

the fluid output channel is used for outputting cleaning fluid outwards;

the small particle liquid catching device (13) is arranged at the lower part of the shell (11) and is positioned in front of or behind the opening (16), the small particle liquid catching device (13) comprises a front flexible scraping lip strip (18) and a rear flexible scraping lip strip (19) which are arranged side by side from front to back, the front flexible scraping lip strip (18) and the rear flexible scraping lip strip (19) both extend along the left-right direction, a liquid inlet gap (22) is formed between the front flexible scraping lip strip (18) and the rear flexible scraping lip strip (19), and the liquid inlet gap (22) is communicated with the suction channel (15);

the method is characterized in that: the ground suction nozzle also comprises a floating mechanism (32), and the small particle liquid catching device (13) is elastically arranged at the lower part of the shell (11) through the floating mechanism (32) so that the front flexible scraping lip strip (18) and the rear flexible scraping lip strip (19) are always tightly attached to the ground to be cleaned.

2. A floor nozzle for a wet cleaning appliance according to claim 1, characterized in that: granule liquid trapping apparatus (13) include a base (17), preceding flexibility scrape lip strip (18) and back flexibility scrape lip strip (19) and all install base (17) on, base (17) on be provided with feed liquor gap (22) communicating perforating hole (28), perforating hole (28) with suction channel (15) between be connected with expansion hose (33).

3. A floor nozzle for a wet cleaning appliance according to claim 2, characterized in that: the floating mechanism (32) comprises a return spring (34) which is in abutting contact between the bottom of the shell (11) and the base (17).

4. A floor nozzle for a wet cleaning appliance according to claim 3, characterized in that: the floating mechanism (32) further comprises a guide post (35) fixedly arranged at the bottom of the shell (11) and extending along the vertical direction, and a sliding block (36) arranged on the guide post (35) in a sliding manner, wherein the base (17) and the sliding block (36) are fixed together.

5. A floor nozzle for a wet cleaning appliance according to claim 3, characterized in that: the return spring (34) is a compression spring or a spring sheet.

6. A floor nozzle for a wet cleaning appliance according to claim 1, characterized in that: the lower edges of the front flexible scraping lip strip (18) and the rear flexible scraping lip strip (19) are protruded out of the lower surface of the shell (11).

7. A floor nozzle for a wet cleaning appliance according to claim 6, characterized in that: the front flexible scraping lip strip (18) is provided with a front scraping edge (20) positioned at the lowermost end, the rear flexible scraping lip strip (19) is provided with a rear scraping edge (21) positioned at the lowermost end, the front scraping edge (20) and the rear scraping edge (21) are both positioned below the plane of the opening (16), when the floor suction nozzle is used on the floor to be cleaned, one part of the front scraping edge (20) and/or the rear scraping edge (21) is in interference fit with the floor to be cleaned, the other part of the front scraping edge (20) and/or the rear scraping edge (21) and the floor to be cleaned form at least one narrow channel (23), and small-particle liquid can be sucked into the liquid inlet gap (22) through the narrow channel (23).

8. A floor nozzle for a wet cleaning appliance according to claim 7, characterized in that: when the floor suction nozzle is used on the floor to be cleaned, one part of the front scraping edge (20) is in interference fit with the floor to be cleaned, at least one narrow channel (23) is formed between the other part of the front scraping edge and the floor to be cleaned, and the rear scraping edge (21) is in interference fit with the floor to be cleaned.

9. A floor nozzle for a wet cleaning appliance according to claim 7, characterized in that: the front scraping edge (20) is provided with a plurality of gaps (24) which are communicated with each other in a front-back direction, and the gaps (24) are communicated with the liquid inlet gap (22); when the floor suction nozzle is used on the floor to be cleaned, the partial front scraping edge (20) between the two adjacent notches (24) is in interference fit with the floor to be cleaned, and the corresponding narrow channel (23) is formed between the notch (24) and the floor to be cleaned.

10. A floor nozzle for a wet cleaning appliance according to claim 7, characterized in that: a plurality of bulges (26) distributed at intervals along the left-right direction are arranged on the front surface of the front scraping edge (20); when the floor suction nozzle is used on the floor to be cleaned, the bulges (26) are in interference fit with the floor to be cleaned, and the corresponding narrow channel (23) is formed between the partial front scraping edge (20) between every two adjacent bulges (26) and the floor to be cleaned.

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