CN215899557U

CN215899557U - Centrifugal separation unit, centrifugal separation structure, ground washing assembly and ground washing machine

Info

Publication number: CN215899557U
Application number: CN202121113838.3U
Authority: CN
Inventors: 方剑强; 郑建明; 王胜林
Original assignee: Ningbo Fujia Industrial Co Ltd
Current assignee: Ningbo Fujia Industrial Co Ltd
Priority date: 2021-03-15
Filing date: 2021-05-22
Publication date: 2022-02-25
Anticipated expiration: 2031-05-22
Also published as: CN115067827A; CN215899556U; CN215899555U; CN215899558U; CN115067826A; CN115067825A; CN115067828A

Abstract

The utility model provides a centrifugal separation unit, which comprises a gas inlet and a centrifugal separation cavity, wherein a gas-liquid mixture from the gas inlet enters the centrifugal separation cavity, the centrifugal separation cavity separates gas from liquid by utilizing the rotating centrifugal force of the gas-liquid mixture, a separated gas flow is discharged from a gas outlet, the centrifugal separation cavity is provided with a liquid outlet, the liquid outlet is provided with a one-way valve which is opened towards one side of a sewage bucket in a one-way mode, when the centrifugal separation unit works, the one-way valve seals the liquid outlet, when the centrifugal separation unit stops working, the one-way valve opens the liquid outlet so that sewage can be discharged to the sewage bucket through the liquid outlet, when the centrifugal separation unit works, the liquid outlet of the centrifugal separation cavity is separated from the sewage bucket, and when the centrifugal separation unit stops working, the liquid outlet of the centrifugal separation cavity is opened so that the sewage can be discharged into the sewage bucket; also provides a centrifugal separation structure, which adopts the centrifugal separation unit; also provides a ground washing assembly which is provided with the centrifugal separation structure; a floor washing machine is also provided, and the floor washing machine is provided with the floor washing assembly.

Description

Centrifugal separation unit, centrifugal separation structure, ground washing assembly and ground washing machine

Technical Field

The utility model relates to the technical field of cleaning electric appliances, in particular to a centrifugal separation unit, a centrifugal separation structure, a floor washing assembly and a floor washing machine.

Background

The separation structure is the core subassembly of scrubber, and the effect of separation structure lies in carrying out gas-liquid separation with the aqueous vapor mixture that clean end clean ground produced, and sewage is then stayed the slop pail by the separation, and the air after the separation is then taken out by the fan, arranges in the environment to realize whole work flow.

The separation structure which is commonly used at present is a separation cover structure, the separation cover structure comprises an air inlet and a separation cover, a gas-liquid mixture from the air inlet is sucked into a sewage bucket and is blocked by an opening of the separation cover, the separation cover separates gas from liquid by using the blocking effect of the separation cover, the separation cover structure has the advantages of large circulation and difficulty in blocking, but the gas-liquid separation effect is not high, so that a fan and related parts are required to have good waterproof performance, and otherwise, faults can be caused.

In order to obtain a better separation effect, a centrifugal separation structure is tried to be used for gas-liquid separation, but the existing scheme has a problem that whether the centrifugal separation structure works or not, a liquid outlet of a cyclone cavity (centrifugal separation cavity) and a sewage bucket (recovery tank) are required to be in a always communicated state, in addition, a gas outlet needs to be arranged in a downward gas outlet mode, so that the centrifugal separation purpose is realized, and the better separation effect is realized.

In addition to the design limitation of the direct connection, the prior art is not favorable for constructing a nested separation structure with multiple separation units, for example, according to the characteristics of the above technology, the air inlet needs to be directly connected to the separation unit, and cannot pass through the slop pail before entering the separation unit, so when accommodating the centrifugal separation unit or multiple separation units in one slop pail, the problems of complex structure, incompact structure and the like are caused because of the need of isolation arrangement, and thus complex pipeline design is required. In addition, according to the characteristics of the prior art, the arrangement position of the air inlet is limited. In addition, according to the characteristics of the prior art, the airflow flow path has more turns, and the airflow can not flow more smoothly.

The applicant makes a deeper study, breaks through the limitation of the existing thinking, and provides a technical scheme of a centrifugal separation unit, a centrifugal separation structure, a ground washing assembly and a ground washing machine.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a centrifugal separation unit, wherein when the centrifugal separation unit works, a liquid outlet of a centrifugal separation cavity is separated from a sewage bucket, and when the centrifugal separation unit stops working, the liquid outlet of the centrifugal separation cavity is opened to discharge sewage into the sewage bucket; also provides a centrifugal separation structure, which adopts the centrifugal separation unit; also provides a ground washing assembly which is provided with the centrifugal separation structure; a floor washing machine is also provided, and the floor washing machine is provided with the floor washing assembly.

Compared with the prior art, the centrifugal separation unit comprises the air inlet and the centrifugal separation cavity, the air-liquid mixture from the air inlet enters the centrifugal separation cavity, the centrifugal separation cavity separates the air from the liquid by utilizing the rotating centrifugal force of the air-liquid mixture, the separated air flow is discharged from the air outlet, the centrifugal separation cavity is provided with the liquid discharge port, the liquid discharge port is provided with the one-way valve which is opened towards one side of the sewage bucket in one way, when the centrifugal separation unit works, the one-way valve seals the liquid discharge port, and when the centrifugal separation unit stops working, the one-way valve opens the liquid discharge port to discharge sewage to the sewage bucket through the liquid discharge port.

As a modification, the liquid discharge port is located at the bottom of the centrifugal separation chamber.

As an improvement, the gas-liquid mixture from the gas inlet enters the centrifugal separation cavity from the bottom and/or the peripheral wall of the centrifugal separation cavity.

As an improvement, the bottom of the centrifugal separation cavity is provided with a first cyclone which guides the gas-liquid mixture from the gas inlet into the centrifugal separation cavity to form a cyclone.

As the improvement, the bottom of the centrifugal separation cavity is connected with a second air inlet pipe, and the second air inlet pipe is used for increasing the distance between the air inlet and the first cyclone.

As an improvement, the bottom of the centrifugal separation cavity is connected with a third air inlet pipe, a second cyclone is arranged in the third air inlet pipe, and the second cyclone guides the gas-liquid mixture from the air inlet into the centrifugal separation cavity to form cyclone.

As an improvement, a diffusion cover is arranged at the inlet of the centrifugal separation cavity and guides the gas-liquid mixture coming from the third gas inlet pipe to diffuse into the centrifugal separation cavity.

As the improvement, the bottom in centrifugal separation chamber is connected with the third inlet pipe, is equipped with the second cyclone in the third inlet pipe to, the bottom in centrifugal separation chamber is equipped with first cyclone, and the gas-liquid mixture that the air inlet was come passes through second cyclone, the direction of first cyclone in proper order and gets into centrifugal separation chamber and form the whirlwind.

As an improvement, the centrifugal separation cavity is provided with an air outlet pipe, the air outlet pipe is axially sleeved with the centrifugal separation cavity, an inlet of the air outlet pipe is positioned above the bottom of the centrifugal separation cavity, and the air outlet pipe is used for guiding the airflow in the centrifugal separation cavity to the top of the centrifugal separation cavity to be discharged.

As an improvement, an axial flow channel is arranged at the lower side of the bottom of the centrifugal separation cavity along the axial direction of the centrifugal separation cavity, the gas inlet axially conveys a gas-liquid mixture through the axial flow channel, and the gas-liquid mixture enters the centrifugal separation cavity from the bottom and/or the peripheral wall of the centrifugal separation cavity.

As an improvement, the bottom of the centrifugal separation cavity is provided with an inlet of a gas-liquid mixture, and a separation part is arranged between the inlet and the inlet of the gas outlet pipe.

As an improvement, the bottom of the centrifugal separation cavity is provided with an inlet of a gas-liquid mixture, the inlet is provided with a partition part, and an annular partition flow passage is formed between the partition part and the inlet.

As an improvement, the annular interval flow passages are arranged in a diameter-variable mode.

As an improvement, the annular interval flow passage is provided with at least one narrowing section, the narrowing section is arranged between the inlet and the outlet of the annular interval flow passage, and the diameters of the inlet and the outlet are larger than the diameter of the narrowing section.

As an improvement, the peripheral wall of the centrifugal separation cavity is provided with a collecting chamber, the collecting chamber is provided with a liquid outlet, and the collecting chamber is used for collecting sewage and discharging the sewage into a sewage bucket through the liquid outlet.

As an improvement, the collection chamber is provided with tangential guide surfaces which are tangentially arranged to the rotating circumferential surface of the centrifugal separation chamber.

As an improvement, the collecting chamber is provided with a flow baffle plate, the height of the flow baffle plate is higher than the bottom of the collecting chamber, or the collecting chamber is provided with a flow baffle plate in the whirlwind rotating direction, the height of the flow baffle plate is higher than the bottom of the collecting chamber, the centrifugal separation cavity is provided with an air outlet pipe, the air outlet pipe is axially sleeved with the centrifugal separation cavity, and the height of the flow baffle plate is higher than the air inlet of the air outlet pipe.

As an improvement, the flow baffle is arranged at the cyclone outlet of the collecting chamber and is a constituent part of the rotating circumferential surface of the centrifugal separation cavity.

As an improvement, a baffle wall is arranged at an outlet of the centrifugal separation cavity, a flow guide channel is arranged on the baffle wall, the outlet is communicated with the air outlet through the flow guide channel, and the flow guide channel is used for prolonging the circulation distance of the air flow.

As an improvement, the outlet is positioned at the top of the centrifugal separation cavity, and the flow guide channel is arranged between the baffle wall and the top.

After adopting the structure, compared with the prior art, the utility model has the following advantages: the centrifugal separation chamber is equipped with the leakage fluid dram, this leakage fluid dram is equipped with the check valve to one-way opening of slop pail one side, when centrifugal separation unit during operation, this check valve seals the leakage fluid dram, when centrifugal separation unit stop work, this check valve opens the leakage fluid dram and supplies sewage to pass through the leakage fluid dram and arrange to the slop pail, the structural scheme who carries out one-way flowing back according to different operating condition has been proposed on the one hand, on the other hand, after designing like this, structural optimization design and the change for follow-up centrifugal separation unit provide very big convenience, for example, be favorable to constructing nested separation structure, can simplify the structure simultaneously at the separation structure who constructs nested formula, improve compact structure etc.. In addition, the change of the setting position of the air inlet is facilitated, and the limitation is small. In addition, the structure with a smoother airflow flow path is favorably designed, so that the airflow can flow more smoothly.

Compared with the prior art, the utility model also provides a separation structure comprising the centrifugal separation unit.

As a refinement, the separation structure comprises a plurality of separation units, wherein at least one centrifugal separation unit is included.

As a modification, the separation units are disposed in the slop pail and are sequentially disposed along the axial direction of the slop pail.

As an improvement, the separation structure comprises a plurality of stages of separation units which are communicated in sequence, and the final stage adopts a centrifugal separation unit.

As a modification, the separation structure includes a first separation unit as a preceding stage separation unit and a second separation unit as a succeeding stage separation unit; the first separation unit adopts a separation cover structure, and the second separation unit adopts a centrifugal separation structure; the first separation unit comprises a separation cover and a first air inlet pipe which are distributed up and down, and the first air inlet pipe is used for inputting a preceding stage gas-liquid mixture; the second separation unit comprises a centrifugal separation cavity and a second air inlet pipe which are distributed from top to bottom, the air inlet end of the second air inlet pipe is positioned above the separation cover, the air outlet end of the second air inlet pipe is positioned in the centrifugal separation cavity, or the second separation unit comprises the centrifugal separation cavity and the air inlet end of the centrifugal separation cavity, and the centrifugal separation cavity is positioned above the separation cover.

As an improvement, part or all of the centrifugal separation unit is positioned in the sewage bucket, the gas-liquid mixture sequentially passes through the sewage bucket and the centrifugal separation unit, and the gas flow separated by the centrifugal separation chamber is discharged from the gas outlet of the centrifugal separation unit, or the gas-liquid mixture directly passes through the centrifugal separation unit and the gas flow separated by the centrifugal separation chamber is discharged from the gas outlet of the centrifugal separation unit.

As an improvement, the first separation unit and the second separation unit are distributed upwards along the axial direction of the slop pail, the first air inlet pipe extends upwards from the bottom of the slop pail along the axial direction of the slop pail, an annular space formed between the first air inlet pipe and the slop pail serves as a liquid storage cavity, sewage separated by the first separation unit and the second separation unit is finally discharged into the liquid storage cavity, the gas-liquid mixture sequentially passes through the first air inlet pipe, the separation cover, the slop pail, the second air inlet pipe and the centrifugal separation cavity, and the gas flow separated by the centrifugal separation cavity is discharged from the gas outlet of the centrifugal separation unit, or the gas-liquid mixture sequentially passes through the first air inlet pipe, the separation cover, the slop pail and the centrifugal separation cavity, and the gas flow separated by the centrifugal separation cavity is discharged from the gas outlet of the centrifugal separation unit.

After adopting the structure, compared with the prior art, the utility model has the following advantages: adopt centrifugal separation unit, on the one hand provide a novel separation structure, on the other hand centers on the separation structure that centrifugal separation unit found, can improve compact structure degree, in addition, accomplish compact structure simultaneously, still be favorable to establishing the better separation structure of separation effect.

Compared with the prior art, the utility model further provides a floor washing assembly which comprises a cleaning part and a support, wherein the cleaning part is connected with the support, the cleaning part is communicated and connected with the separating structure through a first flow passage, the separating structure is connected with the support, the support is provided with a second flow passage, the separating structure is communicated and connected with the second flow passage, and the second flow passage is used for being communicated and connected with a suction source.

As an improvement, the cleaning device also comprises a clean water barrel, a third flow passage is arranged between the clean water barrel and the cleaning part, the third flow passage is used for conveying water in the clean water barrel to the cleaning part for use, and the third flow passage is provided with a water shortage detection sensor.

As an improvement, the floor washing assembly is used as a functional assembly of the dust collector and is detachably connected with the dust collector, wherein the bracket is provided with a detachable connecting structure detachably connected with the dust collector, and the detachable connecting structure enables the second flow passage to be detachably communicated and connected with the dust collector.

After adopting the structure, compared with the prior art, the utility model has the following advantages: adopt the isolating construction, on the one hand put forward a neotype subassembly of washing ground, on the other hand, centers on the isolating construction establish wash ground subassembly, can improve compact structure degree, in addition, accomplish compact structure simultaneously, still be favorable to establishing the better subassembly of washing ground of separation effect.

Compared with the prior art, the utility model also provides a floor washing machine which comprises a suction source, wherein the suction source is connected with the floor washing assembly.

As an improvement, the suction source adopts a handheld dust collector which is detachably connected with the floor washing assembly.

After adopting the structure, compared with the prior art, the utility model has the following advantages: the novel floor scrubber is proposed on the one hand, on the other hand centers on the floor scrubber that the floor scrubber subassembly found, can improve compact structure degree, in addition, accomplish compact structure simultaneously, still be favorable to constructing the better floor scrubber of separation effect.

Drawings

Fig. 1 is a perspective view of a separation structure.

Fig. 2 is a perspective view of the upper part of the slop pail (shown with a separate cover and float mechanism).

Figure 3 is a perspective view of the lower portion of the slop pail (with the separating hood and float mechanism removed).

Fig. 4 is a perspective view of the peripheral wall with the upper portion of fig. 2 removed.

Fig. 5 is a perspective view of the top view of fig. 4.

Fig. 6 is a perspective view mainly showing a related structure in the centrifugal separation chamber.

Fig. 7 is a second perspective view mainly showing the related structure in the centrifugal separation chamber.

Fig. 8 is a perspective view mainly showing the blocking wall.

Fig. 9 is a perspective view of the inside of the centrifugal separation chamber.

Fig. 10 is a perspective view of a floor washing assembly.

Fig. 11 is a perspective view of fig. 10 with the cover removed.

FIG. 12 is a cross-sectional view of the floor scrubbing assembly.

Fig. 13 is a partially enlarged schematic view of fig. 12 mainly showing a separation structure.

Fig. 14 is a perspective view of the suction source using the main body of the hand-held cleaner.

FIG. 15 is a schematic perspective view mainly showing a structure in which a tangential introduction port is used for cyclone formation.

FIG. 16 is a cross-sectional schematic view of another scrubber.

Fig. 17 is an enlarged view a of fig. 16.

The reference number indicates that 1-sewage bucket, 1.1-upper part, 1.2-lower part, 2-separation cover, 3-first air inlet pipe, 4-centrifugal separation cavity, 4.1-collection chamber, 4.2-one-way valve, 4.3-tangential guide surface, 5-second air inlet pipe, 6-air inlet end, 7-air outlet end, 8-floating mechanism, 9-top, 10-first flow passage, 11-second flow passage, 12-third flow passage, 13-cleaning part, 14-bracket, 15-rear cover, 16-water pump, 17-water shortage detection sensor, 18-plug pipe, 19-button, 20-clamping bulge, 21-electric connection terminal, 22-clear water bucket, 23-air humidity detection sensor, 24-exhaust pipe, 24-air outlet pipe, 25-air outlet, 26-air inlet, 27-handheld cleaner main body, 28-top cover, 29-baffle, 30-flow guide side wall, 31-air outlet pipe, 32-first cyclone, 33-flow guide channel, 34-flow baffle, 35-guide structure, 36-tangential inlet, 37-plug-in suction port, 38-fan, 39-filter, 40-handle, 41-second cyclone, 42-third air inlet pipe, 43-diffusion cover, 44-narrowing section and 45-base.

Detailed Description

The following description is presented to disclose the utility model so as to enable any person skilled in the art to practice the utility model. The embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the utility model, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the utility model.

The utility model is described in further detail below:

the first embodiment is as follows:

as shown in fig. 1, a schematic perspective view of a separation structure is disclosed, which includes a slop pail 1 and one or more separation units, wherein if there are multiple separation units, the airflow channels of the separation units are sequentially communicated, and the slop water separated by the separation units is discharged into the slop pail 1.

In this example, adopt the design of a slop pail 1, be equipped with two separating element in this slop pail 1, can realize like this that the separation is effectual, can also control the size of structure better simultaneously, in addition, adopt the design of a slop pail 1, be favorable to the dismouting to clear up, convenience of customers uses. Of course, more than two separate units are possible, and the slop pail 1 may be more than one.

As shown in fig. 13, two separation units, namely a first separation unit and a second separation unit, are arranged in the slop pail 1, the first separation unit adopts a separation cover structure, and the second separation unit adopts a centrifugal separation structure; the first separation unit comprises a separation cover 2 and a first air inlet pipe 3 which are distributed up and down, and the first air inlet pipe 3 is used for inputting a front-stage gas-liquid mixture; in this example, the second separation unit includes a centrifugal separation chamber 4 and a second air inlet pipe 5 which are distributed up and down, an air inlet end 6 of the second air inlet pipe 5 is located above the separation cover 2, an air outlet end 7 of the second air inlet pipe 5 is located in the centrifugal separation chamber 4, other structures are also possible, for example, the second air inlet pipe 5 is eliminated, the second separation unit includes the centrifugal separation chamber 4 and the air inlet end 6 arranged in the centrifugal separation chamber 4, and the centrifugal separation chamber 4 is located above the separation cover 2. By adopting the combination of the first separation unit and the second separation unit, the separation effect can be further optimized, and the size of the structure can be further controlled.

As shown in fig. 2, 3, 4 and 13, the first separating unit and the second separating unit are coaxially disposed, and in this example, specifically, the second separating unit and the first separating unit are vertically disposed in the axial direction of the slop pail 1, the first separating unit is a front stage separating unit, and the second separating unit is a rear stage separating unit. Thus, the separation effect can be further optimized compared to the aforementioned structure, and the size of the structure can be further controlled.

As shown in fig. 2, the separation cover 2 is connected to a floating mechanism 8, the floating mechanism 8 is used for driving the separation cover 2 to move up and down according to the sewage level, the top 9 of the separation cover 2 is used for closing/opening the air inlet end 6 of the second air inlet pipe 5 according to the sewage level, when the sewage reaches a certain height, the top 9 of the separation cover 2 moves up to the position where the air inlet end 6 of the second air inlet pipe 5 is closed, so that the sewage is prevented from being sucked into the second air inlet pipe 5 due to continuous work, and a suction source is sucked, and the height is defined as the height that the sewage is full, and the sewage needs to be poured for use. To guide the movement of the separating hood 2, a guiding structure 35 is also attached to the separating hood 2, which guiding structure 35 is in guiding engagement with the inner surface of the sewage bucket 1. The guide structure 35 and the floating mechanism 8 can adopt various structures, wherein the guide structure 35 is a guide plate, and the floating mechanism 8 is a floater structure.

As shown in fig. 1, 2 and 3, the slop pail 1 includes upper and lower parts, which are detachably connected, respectively an upper part 1.1 and a lower part 1.2, and between the upper and lower parts, separate units are accommodated, so that the user can clean the inside of the slop pail 1 more conveniently. Further, the upper part 1.1 is provided with a rear separating unit, which is connected to the upper part 1.1 and can be removed from the keg 1 together with the upper part 1.1, thus further facilitating the user to clean the interior of the keg 1 and the separating units.

The detachable connection in this case is very convenient by the rotary clamping at the connection end between the upper part 1.1 and the lower part 1.2.

As shown in fig. 1, 2, 3, and 13, the separating hood structure includes an air inlet 26 and a separating hood 2, the gas-liquid mixture from the air inlet 26 enters the slop pail 1 through the air outlet end 7 of the first air inlet pipe 3, the separating hood 2 changes the direction of the gas-liquid mixture by its blocking action, in this case, downward, so that most of the sewage is left in the slop pail 1, i.e., in the annular liquid storage cavity formed between the first air inlet pipe 3 and the slop pail 1, and the air flow bypasses the separating hood 2 due to the suction of the suction source and then continues upward, thereby realizing a certain gas-liquid separation. In other words, the sewage and the impurities go down and the air goes up through the first blocking, so that the separation purpose is realized, and meanwhile, the airflow flowing to the next-stage separation unit is facilitated.

As shown in fig. 4, 5, 6, 7, 8, 9, and 13, the centrifugal separation structure includes a gas inlet 26 and a centrifugal separation chamber 4, in this example, the gas inlet end 6 of the second gas inlet pipe 5 is the gas inlet 26, the gas-liquid mixture from the gas inlet 26 enters the centrifugal separation chamber 4 through the gas outlet end 7 of the second gas inlet pipe 5, the centrifugal separation chamber 4 separates the gas from the liquid by the centrifugal force of the gas-liquid mixture rotating, in this example, in order to form the centrifugal rotation, the centrifugal separation chamber 4 is provided with a first cyclone 32 at the gas outlet end 7 of the second gas inlet pipe 5, and the gas-liquid mixture enters the centrifugal separation chamber 4 through the first cyclone 32 to form the centrifugal rotation, thereby implementing the centrifugal separation. Other structures can be adopted for forming the cyclone, for example, as shown in fig. 15, the centrifugal separation chamber 4 is provided with a tangential inlet 36, the tangential inlet 36 is communicated with the second air inlet pipe 5, and the gas-liquid mixture from the second air inlet pipe 5 is guided through the tangential inlet 36 to form the cyclone. As shown in fig. 16 and 17, the bottom of the centrifugal separation chamber 4 is connected to a third air inlet pipe 42, a second cyclone 41 is disposed in the third air inlet pipe 42, the second cyclone 41 guides the gas-liquid mixture from the air inlet 26 into the centrifugal separation chamber 4 to form a cyclone, the third air inlet pipe 42 is equivalent to the second air inlet pipe 5, and the air inlet 26 is the air inlet end 6 of the second air inlet pipe 5. For example, the bottom of the centrifugal separation chamber 4 is connected with a third air inlet pipe 42, a second cyclone 41 is arranged in the third air inlet pipe 42, the bottom of the centrifugal separation chamber 4 is provided with a first cyclone 32, and the gas-liquid mixture from the air inlet sequentially passes through the second cyclone 41 and the first cyclone 32 to enter the centrifugal separation chamber to form a cyclone.

As shown in fig. 9 and 13, the peripheral wall of the centrifugal separation chamber 4 is provided with a collection chamber 4.1, the collection chamber 4.1 is provided with a liquid outlet, and the collection chamber 4.1 is used for collecting sewage and discharging the sewage into the sewage bucket 1 through the liquid outlet, so that better separation can be realized and the sewage can be discharged to the sewage bucket 1. Furthermore, as shown in fig. 9, the collecting chamber 4.1 is provided with tangential guide surfaces 4.3 which are arranged tangentially to the circumferential surface of rotation of the centrifugal separation chamber, which enables the cyclone to enter the collecting chamber 4.1 better, resulting in a better separation. Furthermore, as shown in fig. 6, 7 and 13, the air outlet pipe 31 is arranged in the centrifugal separation cavity 4, and the air outlet pipe 31 is axially sleeved with the centrifugal separation cavity 4, so that air flow formed by the air outlet pipe 31 flows upwards and downwards from the air outlet pipe 31, the separated sewage is favorably kept in the centrifugal separation cavity 4, and meanwhile, the rotating air flow has enough time to separate and cannot be directly discharged. Furthermore, as shown in fig. 13, the collecting chamber 4.1 is provided with a baffle plate 34, and the height of the baffle plate 34 is higher than the bottom of the collecting chamber 4.1, so that the rotating airflow entering the collecting chamber 4.1 can be blocked to facilitate the separation of the sewage and remain in the collecting chamber 4.1. Furthermore, as shown in fig. 13, the collecting chamber 4.1 is provided with a baffle plate 34, in this embodiment, the baffle plate 34 is disposed at the cyclone outlet of the collecting chamber 4.1, and the baffle plate 34 is a constituent part of the rotating circumferential surface of the centrifugal separation chamber 4, the structure is compact, the wall surface of the baffle plate 34 at one side of the centrifugal separation chamber 4 does not affect the cyclone of the centrifugal separation chamber 4, the height of the baffle plate 34 is higher than the bottom of the collecting chamber 4.1, the centrifugal separation chamber 4 is provided with an air outlet pipe 31, the air outlet pipe 31 is axially sleeved with the centrifugal separation chamber 4, and the height of the baffle plate 34 is higher than the air inlet 26 of the air outlet pipe 31, so that the rotating air flow entering the collecting chamber 4.1 can be blocked to a certain extent, which is beneficial to separating the sewage and remaining in the collecting chamber 4.1, and at the same time, the separated sewage is not easy to enter the air outlet pipe 31 again, thereby ensuring the separation performance.

Centrifugal separation chamber 4 utilizes the rotatory centrifugal force of gas-liquid mixture with gas-liquid separation, can obtain better separation effect, simultaneously, collects room 4.1's setting, collects room 4.1 on the one hand and has promoted gas-liquid separation, and on the other hand makes the sewage that centrifugal separation came out concentrate to collecting room 4.1 fast, greatly improves the separation effect, consequently has better gas-liquid separation performance.

The liquid outlet of the collecting chamber 4.1 is provided with a one-way valve 4.2, when the centrifugal separation unit works, the one-way valve 4.2 seals the liquid outlet, when the centrifugal separation unit stops working, the one-way valve 4.2 opens the liquid outlet for discharging sewage to the slop pail through the liquid outlet, therefore, when the centrifugal separation unit works, the air flow in the slop pail 1 can be ensured not to be directly strung into the centrifugal separation chamber 4 through the sewage outlet, on the other hand, the negative pressure of the centrifugal separation chamber 4 is higher than that of the slop pail 1, so that the negative pressure generated by the fan 38 is taken as a high-efficiency suction source, the energy utilization rate is high, thereby the air flow is stronger, when the centrifugal separation unit stops working, the one-way valve 4.2 opens the liquid outlet for discharging sewage to the slop pail 1. In conclusion, the scheme of the utility model is beneficial to preventing the centrifugal separation unit and the sewage bucket 1 from influencing each other. In this example, the one-way valve 4.2 is a rubber or silica gel valve plate, when the centrifugal separation unit works, the one-way valve 4.2 automatically closes the liquid discharge port by using the pressure difference between the centrifugal separation chamber 4 and the slop pail 1, and when the centrifugal separation unit stops working, the one-way valve 4.2 is opened in one way along with the reduction or disappearance of the pressure difference to discharge the sewage to the slop pail 1. Of course, the one-way valve 4.2 can also be in other structures, and the control structure for one-way opening can also be in other structures, so that the one-way opening control device can be applied to all the requirements of the scheme of the utility model.

As can be seen from the axial arrangement of the separation unit and with reference to the drawings, the discharge opening is located in the bottom of the centrifugal separation chamber 4 in this example, so that when the centrifugal separation unit stops operating, the one-way valve 4.2 opens the discharge opening, the sewage can naturally flow to the slop pail 1, and the path is shortest. The bottom arrangement is combined with the arrangement of the collecting chamber 4.1, namely the liquid outlet is positioned at the bottom of the collecting chamber 4.1, so that better separation and pollution discharge effects can be achieved.

As can be seen from the foregoing, the centrifugal separation chamber 4 is connected at the bottom thereof with a second air inlet pipe 5, and the second air inlet pipe 5 is used for increasing the distance between the air inlet end 6 and the first cyclone 32, so that the cyclone acceleration is facilitated, and in addition, the sewage left in the slop pail 1 is not easy to be blown into the first cyclone 32 again or further into the centrifugal separation chamber 4.

The centrifugal separation unit of the present invention can be used alone, and the first separation unit is not necessarily required, in which case the first gas inlet pipe 3 is only responsible for the gas-liquid mixture, and then the gas-liquid mixture floods the slop pail 1, and due to the rising characteristic of the gas flow, it will further enter the centrifugal separation chamber 4 through the second gas inlet pipe 5 or the third gas inlet pipe 42 for separation.

In this example, the basic structure of the centrifugal separation chamber 4 includes a body and a top cover 28, the lower end of the body is connected with the second air inlet pipe 5, and the top cover 28 closes the upper end opening of the body, that is, fig. 6 is connected with the upper body and the second air inlet pipe 5, which is shown in fig. 4.

In this example, the flow guide passage 33 is provided only in the last stage separation unit, but is not limited to this example.

The specific structure of the flow guide channel 33 arranged in the last stage of separation unit is as follows: the upside of the top cover 28 is also connected with a baffle 29, the baffle 29 and the top cover 28 are provided with a flow guide channel 33, the lower surface of the baffle 29 is a baffle wall, the top cover 28 is provided with a through hole as an air flow channel, the outlet of the air flow channel is the baffle wall, the baffle wall is provided with the flow guide channel 33, the outlet is communicated with the discharge port through the flow guide channel 33, the flow guide channel 33 is used for prolonging the circulation distance of the air flow, plays a certain buffering role on the air flow, and is beneficial to preventing sewage from entering, thus being beneficial to protecting the suction source. The flow guide channel 33 comprises a flow guide side wall 30, in this case the flow guide side wall 30 divides the flow guide channel 33 into two channels and discharges the air flow through the two air outlets 25.

In this embodiment, as can be seen from the foregoing and with reference to the accompanying drawings, the centrifugal separation chamber 4 is provided with an air outlet pipe 31, the air outlet pipe 31 is axially sleeved with the centrifugal separation chamber 4, an inlet of the air outlet pipe 31 is located above the bottom of the centrifugal separation chamber 4, and the air outlet pipe 31 is used for guiding the air flow in the centrifugal separation chamber 4 to the top of the centrifugal separation chamber 4 to be discharged. Therefore, the air outlet is smooth, the air flow is facilitated, in addition, the arrangement structure is facilitated, and the structure is compact.

Furthermore, an axial flow channel, namely the second air inlet pipe 5 or the third air inlet pipe 42, is arranged along the axial direction of the centrifugal separation chamber 4 at the lower side of the bottom of the centrifugal separation chamber 4, the air inlet end 6 axially conveys the gas-liquid mixture through the axial flow channel, and the gas-liquid mixture enters the centrifugal separation chamber from the bottom and/or the peripheral wall of the centrifugal separation chamber. Like this, the setting of combining outlet duct 31 more is favorable to the air current to flow, is favorable to the improvement of separation effect simultaneously, is favorable to the effective utilization of the suction negative pressure energy that forms to the suction source, in addition, more is favorable to arrangement structure, more is favorable to compact structure.

Furthermore, the bottom of the centrifugal separation chamber 4 is provided with an inlet for the gas-liquid mixture, and a partition is provided between the inlet and the inlet of the gas outlet pipe 31, in this case, the partition is the first cyclone 32, so that on one hand, the gas-liquid mixture does not directly flow into the gas outlet pipe 31, on the other hand, the gas-liquid mixture can enter the gas outlet pipe 31 after the centrifugal separation chamber 4 performs cyclone, which is more beneficial to improving the separation efficiency, and on the other hand, the first cyclone 32 is used as the partition, which simplifies the structure.

Further, the bottom of the centrifugal separation chamber 4 is provided with an inlet for the gas-liquid mixture, the inlet is provided with a partition, and an annular partition flow passage is formed between the partition and the inlet, so that the flow of the gas-liquid mixture is facilitated. In this example, the annular spaced flow passages accommodate the cyclone blades of the first cyclones 32.

In order to have stronger cyclone, the annular spacing flow passage can also be arranged to be arranged in a diameter-variable manner, for example, the annular spacing flow passage is provided with at least one narrowing section 44, the narrowing section 44 is arranged between the inlet and the outlet of the annular spacing flow passage, and the diameters of the inlet and the outlet are all larger than the diameter of the narrowing section, so that the airflow can be accelerated by the narrowing section 44, and the diameters of the inlet and the outlet are all larger than the diameter of the narrowing section, thereby being beneficial to forming stronger cyclone.

Example two:

the second embodiment is another separation structure, and compared with the first embodiment, the second embodiment further includes a gas humidity detection sensor 23.

The gas outlet 25 of the separation unit is provided with a gas humidity detection sensor 23, or at least the exhaust pipe 24 communicated with the gas outlet 25 of the last stage of separation unit is provided with the gas humidity detection sensor 23, the gas humidity detection sensor 23 is arranged along the exhaust pipe 24 or close to one side of the separation unit, in this example, as shown in fig. 1 and 5, the exhaust pipe 24 communicated with the gas outlet 25 of the last stage of separation unit is provided with the gas humidity detection sensor 23, and the gas humidity detection sensor 23 is arranged close to one side of the separation unit, so that the suction source can be further protected, the suction source is prevented from being damaged due to too large humidity, and the gas humidity detection sensor is arranged close to one side of the separation unit, so that the gas humidity detection sensor can be found as early as possible, the suction source can be stopped in time, and the protection of the suction source is more facilitated.

The exhaust pipe 24 is mainly used for connection to a suction source, and in the second embodiment, only the lower end of the exhaust pipe 24 is illustrated for illustration, and the length of the exhaust pipe 24 is designed as required, so that the gas humidity detection sensor 23 can be disposed along the exhaust pipe 24.

Example three:

the third embodiment is a floor washing assembly, which comprises a cleaning part 13 and a bracket 14, wherein the cleaning part 13 is connected with the bracket 14, the cleaning part 13 is communicated with a separating structure through a first flow passage 10, the separating structure is connected with the bracket 14, the bracket 14 is provided with a second flow passage 11, the separating structure is communicated with the second flow passage 11, and the second flow passage 11 is used for being communicated with a suction source.

In this example, as shown in fig. 11, 12 and 13, the cleaning portion 13 is a rolling brush structure which drags the floor while the suction source sucks in dirt through the flow passage when cleaning the floor, and sucks in the gas-liquid mixture if water is present on the floor, or the cleaning portion 13 is a wet cleaning portion 13 and presses the cleaning portion 13 with a blade, so that the blade pushes out the dirt while dragging the floor, and the gas-liquid mixture is sucked in when the suction source sucks.

In order to continuously wet the cleaning part 13, a water injection nozzle is arranged on the circumference of the cleaning part 13 and connected with a clean water barrel 22 through a third flow channel 12, in this example, the clean water barrel 22 is arranged coaxially with and above the separating structure.

The third flow channel 12 is a water delivery hose which is provided with a water pump 16 and a water shortage detection sensor 17, and the cleaning part 13 and the suction source can be stopped working in time through signals obtained by the detection of the water shortage detection sensor 17, or information such as water shortage, water adding requirement and water existence is prompted to a user.

The water hose, the water pump 16 and the water shortage detection sensor 17 are mainly arranged in the rear cover 15 of the bracket 14, so that the production and the manufacture are convenient on one hand, and the overall appearance of the floor washing assembly is designed on the other hand.

The power for rotating the cleaning part 13 may be supplied by a battery or a suction source.

Example four:

the fourth embodiment is a floor washing assembly, which is used as a functional assembly of the vacuum cleaner, in other words, the floor washing assembly is used as a floor washing working head of the vacuum cleaner, compared with the third embodiment.

The floor washing assembly is used as a functional assembly of the dust collector and is detachably connected with the dust collector, wherein the bracket 14 is provided with a detachable connecting structure detachably connected with the dust collector, and the detachable connecting structure enables the second flow passage 11 to be detachably communicated with the dust collector.

Removable connection include the grafting pipe 18, button 19, joint arch 20, as shown in fig. 14, to peg graft pipe 18 and handheld vacuum cleaner host 27 grafting suction inlet 37 plug-in connection, when inserting, joint arch 20 can be pushed down by grafting suction inlet 37 internal surface, peg graft pipe 18 can insert smoothly in the grafting suction inlet 37, be equipped with in the grafting suction inlet 37 with the protruding 20 complex sunken of joint, when the grafting of grafting pipe 18 targets in place, then joint arch 20 realizes the locking with sunken cooperation, under the condition of not pressing button 19, peg graft pipe 18 and grafting suction inlet 37 can't the alternate segregation, button 19 is connected with joint arch 20, when pressing button 19, then can drive joint arch 20 withdrawal, thereby realize joint arch 20 and sunken alternate segregation. The structure realizes reliable detachable connection of the floor cleaning assembly and the handheld dust collector main body 27 on one hand, and realizes communication connection between the second flow passage 11 and the suction source on the other hand, so that the handheld dust collector main body 27 is used as the suction source.

In order to realize the power supply and control by the handheld cleaner host 27, the floor washing assembly is further provided with an electric connecting terminal 21, when the inserting pipe 18 is inserted and connected with the inserting suction port 37, the electric connecting terminal 21 is electrically connected with the handheld cleaner host 27 and a control signal circuit, so that on one hand, the electric power consumption part of the floor washing assembly is supplied with power, on the other hand, the electric power consumption part can be controlled by the handheld cleaner host 27, the electric power consumption part comprises the cleaning part 13, the water pump 16, various sensors and the like, and signals acquired by the sensors are transmitted to a control module of the handheld cleaner host 27 through electric connection for decision making of the control module.

Example five:

the fifth embodiment is a scrubber, wherein one aspect is that after assembly, the scrubber assembly cannot be disassembled from the suction source that is dedicated for use with the scrubber, and wherein the separation structure of the present invention provides the same advantages over the prior art, including better performance, better protection of the suction source, reduced likelihood of failure of the suction source, and longer operating time of the suction source. The other type is more advanced, the floor cleaning assembly and the suction source can be separated, in order to better adapt the dust collector to serve as the suction source, the separation structure is provided with a plurality of separation units, and the air humidity detection sensor 23 is arranged, so that the purpose that the dust collector serves as the suction source is achieved.

In this example, as shown in fig. 14, the suction source is a hand-held cleaner main body 27.

The sixth embodiment is a floor washing machine which is placed on a base 45, removed from the base 45 in use and manipulated by a handle 40, and the suction source of the floor washing machine is mainly a fan 38, the fan 38 being arranged in the floor washing machine, unlike the above-mentioned embodiment which uses a main cleaner body as the suction source, and the sixth embodiment is mainly a case where the floor washing assembly and the suction source cannot be separated as indicated in the fifth embodiment, and the sixth embodiment comprises the centrifugal separation unit of the present invention:

compared with other embodiments, the main difference of this embodiment is that as shown in fig. 16 and 17, a third air inlet pipe 42 is connected to the bottom of the centrifugal separation chamber 4, a second cyclone 41 is arranged in the third air inlet pipe 42, the second cyclone 41 guides the gas-liquid mixture from the air inlet 26 into the centrifugal separation chamber 4 to form cyclone, the third air inlet pipe 42 here corresponds to the second air inlet pipe 5, and the air inlet 26 here is the air inlet end 6 of the second air inlet pipe 5.

The directional arrows in fig. 16, 17 are schematic of the general flow direction of the air flow, but the arrows in and below the collecting chamber 4.1 are primarily intended to illustrate the direction of the liquid discharge when the operation is stopped.

In addition, because the cyclone blades of the second cyclone 41 provide the structure formed by the cyclone, the annular interval flow channel does not contain the cyclone blades of the first cyclone 32, so that the annular interval flow channel is more smooth, the flow of a gas-liquid mixture is more facilitated, the cyclone is more facilitated to be enhanced, and in addition, the reducing setting of the annular interval flow channel is more effective.

In addition, the inlet of the centrifugal separation cavity 4 is provided with the diffusion cover 43, the diffusion cover 43 is used as the partition part, the diffusion cover 43 guides the gas-liquid mixture coming from the third gas inlet pipe 42 to diffuse and enter the centrifugal separation cavity 4, so that on one hand, stronger cyclone is favorably formed, on the other hand, the gas flow is favorably and smoothly whirlwind in the centrifugal separation cavity 4, and on the other hand, the diffusion cover 43 and the partition part are the same part, so that the structure is simplified, in short, the better separation effect is favorably realized, and meanwhile, the structure is simplified. In this example, the diffusion cover 43 has an inverted umbrella shape.

In addition, in the sixth embodiment, the floating mechanism 8 is eliminated, but may be additionally provided.

In addition, in the sixth embodiment, the air flow coming out of the top of the centrifugal separation unit first passes through the filter 39 and then is discharged by the fan 38, and since the fan 38 is arranged close to the top of the centrifugal separation unit, the path is short.

Other structures of the sixth embodiment can refer to other embodiments or drawings, and are not described herein.

The electric structures of the water pump 16, the sensors, the cleaning part 13 and the like adopt conventional structures, and detailed description is omitted.

In understanding the present invention, the above structure may be understood with reference to other drawings, if necessary, and will not be described herein.

The foregoing is illustrative of the present invention and all such equivalent changes and modifications in the structure, features and principles described herein are intended to be included within the scope of this invention.

Claims

1. The utility model provides a centrifugal separation unit, including air inlet and centrifugal separation chamber, the gas-liquid mixture that the air inlet was come gets into the centrifugal separation chamber, the centrifugal separation chamber utilizes the rotatory centrifugal force of gas-liquid mixture with gas-liquid separation, the air current after the separation is discharged from the gas outlet, a serial communication port, the centrifugal separation chamber is equipped with the leakage fluid dram, this leakage fluid dram is equipped with the check valve to one-way opening in slop pail one side, when the centrifugal separation unit during operation, this check valve seals the leakage fluid dram, when the centrifugal separation unit stop work, this check valve opens the leakage fluid dram and supplies sewage to pass through the leakage fluid dram and discharge to the slop pail.

2. The centrifugal separation unit of claim 1 wherein the liquid drain is located at the bottom of the centrifugal separation chamber.

3. A centrifugal separation unit according to claim 1 or 2 wherein the gas-liquid mixture from the gas inlet enters the centrifugal separation chamber from the bottom and/or peripheral wall of the chamber.

4. A centrifugal separation unit according to claim 3 wherein the bottom of the chamber is provided with a first cyclone which directs the gas-liquid mixture from the inlet into the chamber and forms a cyclone.

5. The centrifugal separation unit of claim 4 wherein a second inlet duct is connected to the bottom of the centrifugal separation chamber, the second inlet duct being adapted to increase the distance between the inlet opening and the first cyclone.

6. A centrifugal separation unit according to claim 3 wherein the bottom of the centrifugal separation chamber is connected to a third gas inlet pipe, a second cyclone being provided in the third gas inlet pipe, the second cyclone guiding the gas-liquid mixture from the gas inlet into the centrifugal separation chamber and forming a cyclone.

7. The centrifugal separation unit of claim 6 wherein the inlet of the centrifugal separation chamber is provided with a diffuser cap which directs the gas-liquid mixture from the third gas inlet to diffuse into the centrifugal separation chamber.

8. The centrifugal separation unit of claim 3, wherein the bottom of the centrifugal separation chamber is connected with a third air inlet pipe, a second cyclone is arranged in the third air inlet pipe, a first cyclone is arranged at the bottom of the centrifugal separation chamber, and the gas-liquid mixture from the air inlet is guided into the centrifugal separation chamber through the second cyclone and the first cyclone in sequence to form a cyclone.

9. The centrifugal separation unit of claim 3, wherein the centrifugal separation chamber is provided with an air outlet pipe, the air outlet pipe is axially sleeved with the centrifugal separation chamber, an inlet of the air outlet pipe is positioned above the bottom of the centrifugal separation chamber, and the air outlet pipe is used for guiding the airflow in the centrifugal separation chamber to the top of the centrifugal separation chamber to be discharged.

10. The centrifugal separation unit according to claim 9, wherein the lower side of the bottom of the centrifugal separation chamber is provided with an axial flow channel arranged in the axial direction of the centrifugal separation chamber, the gas inlet port axially conveys the gas-liquid mixture through the axial flow channel, and the gas-liquid mixture enters the centrifugal separation chamber from the bottom and/or the peripheral wall of the centrifugal separation chamber.

11. A centrifugal separation unit according to claim 9 wherein the bottom of the chamber is provided with an inlet for the gas-liquid mixture, the inlet being spaced from the inlet of the outlet duct.

12. A centrifugal separation unit according to claim 3 wherein the bottom of the chamber is provided with an inlet for the gas-liquid mixture, the inlet being provided with a partition forming an annular partition flow path therebetween.

13. A centrifugal separation unit as claimed in claim 12 wherein the annular spacer flow passages are tapered.

14. A centrifugal separation unit according to claim 13 wherein the annular partition flow passage is provided with at least one narrowing, the narrowing being provided between the inlet and outlet of the annular partition flow passage, and the inlet and outlet each having a diameter greater than the diameter of the narrowing.

15. The centrifugal separation unit according to claim 1 or 2, wherein the peripheral wall of the centrifugal separation chamber is provided with a collection chamber, the collection chamber being provided with a liquid discharge port, the collection chamber being adapted to collect and discharge the contaminated water into the contaminated water bucket through the liquid discharge port.

16. The centrifugal separation unit of claim 15 wherein the collection chamber is provided with tangential guide surfaces designed tangentially to the circumferential plane of rotation of the centrifugal separation chamber.

17. The centrifugal separation unit of claim 15 wherein the collection chamber has a baffle plate that is higher than the bottom of the collection chamber, or wherein the collection chamber has a baffle plate in the direction of the cyclonic rotation that is higher than the bottom of the collection chamber, and wherein the centrifugal separation chamber has an outlet tube that is axially nested with the centrifugal separation chamber, the baffle plate having a height that is higher than the inlet of the outlet tube.

18. The centrifugal separation unit of claim 17 wherein a baffle is provided at the cyclone outlet of the collection chamber, and the baffle is an integral part of the rotating circumferential surface of the centrifugal separation chamber.

19. A centrifugal separation unit according to claim 1 or 2 wherein the outlet of the centrifugal separation chamber is provided with a baffle wall provided with a flow directing channel, said outlet communicating with the air outlet via the flow directing channel, the flow directing channel being adapted to extend the distance of flow of the air stream.

20. A centrifugal separation unit according to claim 19 wherein the outlet is located at the top of the centrifugal separation chamber, the baffle wall and the top having said flow directing passage therebetween.

21. A separation structure using the centrifugal separation unit according to any one of claims 1 to 20, comprising the centrifugal separation unit.

22. The separation structure of claim 21, wherein the separation structure comprises a plurality of separation units, including at least one centrifugal separation unit.

23. The separation structure of claim 22, wherein the separation units are provided in the slop pail and are arranged in sequence in an axial direction of the slop pail.

24. The separation structure of claim 22 wherein the separation structure comprises a plurality of sequentially connected separation units, the last stage employing a centrifugal separation unit.

25. The separation structure according to claim 24, wherein the separation structure comprises a first separation unit as a preceding stage separation unit and a second separation unit as a succeeding stage separation unit; the first separation unit adopts a separation cover structure, and the second separation unit adopts a centrifugal separation structure; the first separation unit comprises a separation cover and a first air inlet pipe which are distributed up and down, and the first air inlet pipe is used for inputting a preceding stage gas-liquid mixture; the second separation unit comprises a centrifugal separation cavity and a second air inlet pipe which are distributed from top to bottom, the air inlet end of the second air inlet pipe is positioned above the separation cover, the air outlet end of the second air inlet pipe is positioned in the centrifugal separation cavity, or the second separation unit comprises the centrifugal separation cavity and the air inlet end of the centrifugal separation cavity, and the centrifugal separation cavity is positioned above the separation cover.

26. The separation structure according to any one of claims 21 to 25, wherein part or all of the centrifugal separation unit is located in the slop pail, and the gas-liquid mixture passes through the slop pail, the centrifugal separation unit in sequence, and the gas flow separated by the centrifugal separation chamber is discharged from the gas outlet of the centrifugal separation unit, or the gas-liquid mixture passes directly through the centrifugal separation unit, and the gas flow separated by the centrifugal separation chamber is discharged from the gas outlet of the centrifugal separation unit.

27. The separation structure of claim 26, wherein the first separation unit and the second separation unit are distributed upward and downward along the axis of the slop pail, the first air inlet pipe extends upward from the bottom of the slop pail along the axis of the slop pail, an annular space formed between the first air inlet pipe and the slop pail serves as a liquid storage chamber, the sewage separated by the first separation unit and the second separation unit is finally discharged into the liquid storage chamber, the gas-liquid mixture sequentially passes through the first air inlet pipe, the separation cover, the slop pail, the second air inlet pipe and the centrifugal separation chamber, and the gas flow separated by the centrifugal separation chamber is discharged from the gas outlet of the centrifugal separation unit, or the gas-liquid mixture sequentially passes through the first air inlet pipe, the separation cover, the slop pail and the centrifugal separation chamber, and the gas flow separated by the centrifugal separation chamber is discharged from the gas outlet of the centrifugal separation unit.

28. A floor washing assembly employing a separating structure according to any of claims 21 to 27, comprising a cleaning portion and a support, wherein the cleaning portion is connected to the support, the cleaning portion is in communication with the separating structure via a first flow passage, the separating structure is connected to the support, the support is provided with a second flow passage, the separating structure is in communication with the second flow passage, and the second flow passage is adapted to be in communication with a suction source.

29. The floor washing assembly according to claim 28, further comprising a clean water tub, wherein a third flow passage is provided between the clean water tub and the cleaning part, the third flow passage is used for conveying water in the clean water tub to the cleaning part, and the third flow passage is provided with a water shortage detection sensor.

30. The floor cleaning assembly of claim 28, wherein the floor cleaning assembly is a functional assembly of a vacuum cleaner and is detachably connected to the vacuum cleaner, wherein the bracket is provided with a detachable connection structure detachably connected to the vacuum cleaner, and the detachable connection structure enables a detachable communication connection between the second flow passage and the vacuum cleaner.

31. A floor washing machine incorporating a floor washing assembly according to any of claims 28 to 30 and including a suction source, wherein the suction source is connected to the floor washing assembly.

32. The floor washing machine of claim 31, wherein the suction source is a hand-held cleaner that is removably coupled to the floor washing assembly.