CN216933025U

CN216933025U - Backflow-preventing dirt cleaning device for cleaning equipment

Info

Publication number: CN216933025U
Application number: CN202123178175.6U
Authority: CN
Inventors: 龚筱芳
Original assignee: Suzhou Womow Intelligent Technology Co Ltd
Current assignee: Suzhou Womow Intelligent Technology Co Ltd
Priority date: 2021-12-16
Filing date: 2021-12-16
Publication date: 2022-07-12
Anticipated expiration: 2031-12-16

Abstract

The utility model discloses a backflow-preventing dirty cleaning device for cleaning equipment, which comprises a container main body, and an air suction opening and a dirty inlet which are arranged on the container main body, wherein a cyclone separation chamber and a storage chamber are sequentially arranged in the container main body from top to bottom, a first through opening is formed at the intersection of the storage chamber and the cyclone separation chamber, the cross section of the lower end of the cyclone separation chamber is gradually reduced from top to bottom and extends to the first through opening, the air suction opening and the dirty inlet are respectively communicated with the cyclone separation chamber, and under the action of suction force at the air suction opening, sewage mixed with garbage enters the cyclone separation chamber from the dirty inlet and spirally flows downwards into the storage chamber along the cyclone separation chamber. The cyclone separation chamber can prevent liquid in the storage chamber from flowing back and the like, sewage and garbage are conveniently separated from air flow better under the action of the spiral, the sewage and the garbage are not easy to attach to the inner wall of the container main body, the cross section of the lower end of the cyclone separation chamber is gradually reduced from top to bottom, and the spiral action can be ensured to be more uniform and constant.

Description

Backflow-preventing dirt cleaning device for cleaning equipment

Technical Field

The present invention relates to a cleaning device, and more particularly, to a backflow prevention dirt cleaning apparatus for a cleaning device.

Background

Early ground cleaning tools used by people were brooms, mops, etc., which relied primarily on manual operation by people to accomplish the cleaning. With the rapid development of science and technology and the continuous progress of society, the living conditions of people are continuously improved, the requirements on living environment are higher and higher, and the cleaning concept is more and more emphasized, so that the requirements of people on ground cleaning equipment are also gradually improved, such as dust collectors, floor washing machines, floor mopping machines, rolling brush type cleaning equipment and the like. In order to better clean up garbage, dirt and the like attached to the ground, existing cleaning equipment is generally provided with a water supply system and the like to clean cleaning tools such as cleaning rollers and the like, and then sewage is pumped into corresponding cleaning devices such as a sewage bucket and the like to be collected and treated. But cleaning device such as current cleaning device's bilge tub, because there is the defect structurally, cause sewage backward flow easily, the air current backward flow etc. rubbish in the sewage is easy to be attached on cleaning device's such as bilge tub inner wall, it is very troublesome to clear up, it is very inconvenient to operate, waste time and energy, rubbish etc. in sewage and the sewage is difficult for completely separating with the air current, get into corresponding suction device easily, block up the pipeline even, damage equipment etc. have reduced the stability of product, reliability, clean effect, life etc., can not satisfy people's higher and higher demand, influence the application and the development of product.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a backflow-preventing dirt cleaning device for cleaning equipment, which can solve at least one of the technical problems, and the technical scheme of the utility model is as follows:

the utility model provides a dirty cleaning device of anti-return for cleaning equipment, including container body and the suction opening of setting in container body and advance dirty mouthful, container body is interior from last to having set gradually whirlwind separation chamber and storage chamber down, the intersection of storage chamber and whirlwind separation chamber forms first opening, the cross section of whirlwind separation chamber lower extreme reduces gradually and extends to first opening from last to down, suction opening and advance dirty mouthful communicate with whirlwind separation chamber respectively, under the suction effect of suction opening department, the sewage that has mixed rubbish gets into whirlwind separation chamber from advancing dirty mouthful and along whirlwind separation chamber spiral downward inflow storage chamber, the sewage that has mixed rubbish is final with the air current separation, under the state that container body level was emptyd, the minimum that stores the chamber is less than the minimum of first opening.

In some embodiments, the suction opening is located at the top center of the cyclone separation chamber, the cyclone separation chamber sequentially comprises a first chamber and a second chamber from top to bottom, the cross section of the first chamber is equal from top to bottom, the cross section of the second chamber is gradually reduced from top to bottom and extends to the first port, and the dirt inlet is communicated with the first chamber.

In some embodiments, the suction opening is connected to a suction line which extends into the cyclone chamber.

In some embodiments, the exhaust duct is provided with air inlet holes, all of which are covered by a first filter screen for blocking sewage and garbage from entering the exhaust duct, the exhaust duct passes through the first chamber, and the lower end of the exhaust duct extends into the second chamber.

In some embodiments, the air suction opening is connected with a second connecting pipe, the second connecting pipe is positioned above the container body, and the cross section of the inner cavity at the upper end of the second connecting pipe is gradually reduced from top to bottom.

In some embodiments, the top of the container body is provided with an upper cover, the suction opening is provided in the upper cover, and the second connection pipe is integrally formed with the upper cover.

In some embodiments, the bottom of the container body is provided with a drain that communicates with the bottom of the storage chamber.

In some embodiments, the container body includes a separation bucket and a storage bucket, the cyclone separation chamber is an inner chamber of the separation bucket, the storage chamber is an inner chamber of the storage bucket, a cover plate connected with a top of the storage bucket is arranged at a bottom of the separation bucket, and the first through opening is located on the cover plate.

In some embodiments, the bottom of the cover plate is provided with a first protrusion protruding downward, and the first through opening is located on the first protrusion.

In some embodiments, the bottom of the cover plate is provided with a first connecting sleeve connected with the storage barrel, the first protrusion is located in the first connecting sleeve, and a first sealing ring is arranged between the first connecting sleeve and the storage barrel.

The beneficial effects of the utility model are: in the using process, the dirty cleaning device is arranged on corresponding cleaning equipment such as a floor cleaning machine, a floor wiping machine and the like, an air suction opening is connected with a corresponding suction device such as an exhaust fan and the like, sewage mixed with garbage is generated after the cleaning equipment cleans the ground, the sewage mixed with the garbage enters a cyclone separation cavity from an air inlet under the action of suction force at the air suction opening, then the sewage mixed with the garbage and air flow spirally flow downwards into a storage cavity, the sewage mixed with the garbage is finally separated from spiral air flow, the sewage mixed with the garbage is deposited in the storage cavity, the air flow spirally flows from the bottom to the top in the middle of the storage cavity and the cyclone separation cavity, finally the air flow flows out from the air suction opening, the sewage, the garbage and the air flow are better separated through the spiral effect, the sewage and the garbage are not easy to be attached to the inner wall of a container main body, the cleanness and the like in the container main body can be better ensured, sewage and rubbish also are difficult for getting into corresponding suction device, block up the pipeline even, damage equipment etc. even, the cross section of whirlwind separation chamber lower extreme reduces from last to lower gradually, sewage and the air current spiral that has rubbish along with mixing flow downwards, can compensate spiral speed, can guarantee that the screw action is more even, it is constant etc., also be convenient for rubbish and sewage better with air current separation etc. under the state that the container subject level was emptyd, the minimum of storage chamber is less than the minimum of first opening, so when toppling over at container subject slope or level, can also prevent the liquid backward flow etc. of storage intracavity, thereby the stability of product has been improved, safety, reliability, clean effect, long service life etc., can satisfy people's demand that is higher and higher, the application and the development of product have been enlarged.

In addition, in the technical solutions of the present invention, the technical solutions can be implemented by adopting a conventional means in the art, unless otherwise specified.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a sectional view of a backflow preventing contamination cleaning device for a cleaning apparatus according to an embodiment of the present invention.

Fig. 2 is a partial enlarged view of a portion a of fig. 1 according to an embodiment of the present invention.

Fig. 3 is a sectional view of a horizontal toppling state of the backflow preventing dirt cleaning device for the cleaning apparatus according to the embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a backflow prevention dirt cleaning device for a cleaning apparatus according to an embodiment of the present invention.

Fig. 5 is an exploded view of a backflow preventing contamination cleaning device for a cleaning apparatus according to an embodiment of the present invention.

Fig. 6 is a schematic structural view of an exhaust duct according to an embodiment of the present invention.

The reference numerals in the drawings indicate that the container body 1, the separation barrel 101, the storage barrel 102, the cover plate 103, the first protrusion 104, the first connecting sleeve 105, the first sealing ring 106, the cyclone separation chamber 11, the first chamber 111, the second chamber 112, the upper cover 12, the sewage discharge outlet 13, the storage chamber 14, the first port 15, the air suction opening 2, the sewage inlet 3, the air suction pipe 4, the air inlet 41, the first filter screen 42, the first connecting portion 43, the first connecting pipe 5, the second connecting pipe 6, the first tank body 61, and the sewage discharge valve 7.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating some embodiments of the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", "both ends", "both sides", "bottom", "top", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the elements referred to must have a particular orientation or be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first," "second," "upper," "lower," "primary," "secondary," and the like are used for descriptive purposes only and may be used for purposes of simplicity in more clearly distinguishing between various components and not to indicate or imply relative importance.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are used broadly and can be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, or connected through the inside of two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 6, a backflow-preventing and dirt-cleaning device for a cleaning device according to the present invention is schematically shown, and is mainly used for a corresponding cleaning device such as a floor washing machine, a floor wiping machine, etc. This dirty cleaning device includes container body 1, and container body 1 can be other suitable containers among staving, box or the prior art, is provided with suction opening 2 and advances dirty mouthful 3 on the container body 1, has set gradually whirlwind separation chamber 11 and storage chamber 14 from last under to in the container body 1, and suction opening 2 and advance dirty mouthful 3 respectively with whirlwind separation chamber 11 intercommunication, storage chamber 14 and whirlwind separation chamber 11's intersection form first opening 15. The cross-section of the lower end of the cyclonic separating chamber 11 decreases from top to bottom and extends to the first port 15, for example in the form of an inverted cone or other suitable shape known in the art.

Referring to fig. 3, in a state where the container body 1 is horizontally tilted, the lowest point of the storage cavity 14 is lower than the lowest point of the first through opening 15, and the lowest point of the storage cavity 14 and the lowest point of the first through opening 15 have a certain height difference, for example, the first through opening 15 is eccentric to the storage cavity 14, the storage cavity 14 is tapered, or the storage cavity 14 has another suitable shape in the prior art.

In the using process, the dirty cleaning device is arranged on a corresponding cleaning device such as a floor cleaning machine, a floor scrubbing machine and the like, the suction opening 2 is connected with a corresponding suction device such as a suction fan and the like, sewage mixed with garbage is generated after the cleaning device cleans the ground, the sewage mixed with the garbage enters the cyclone separation cavity 11 from the sewage inlet 3 under the action of suction force at the suction opening 2, then the sewage mixed with the garbage and airflow spirally flow downwards into the storage cavity 14, the sewage mixed with the garbage is finally separated from spiral airflow, the sewage mixed with the garbage is deposited in the storage cavity 14, the airflow spirally flows from the middle parts of the storage cavity 14 and the cyclone separation cavity 11 from bottom to top in sequence, finally the airflow flows out from the suction opening 2, the sewage, the garbage and the airflow are better separated by the spiral effect, the sewage and the garbage are not easy to attach to the inner wall of the container main body, the cleanness and the like in the container main body 1 can be better ensured, sewage and rubbish also be difficult for getting into corresponding suction device, block up the pipeline even, damage equipment etc. and the cross section of 11 lower extremes of cyclone chamber reduces from last to down gradually, along with the sewage and the air current spiral that have rubbish mix are to the downflow, can compensate spiral speed, can guarantee that the screw action is more even, constant etc. the rubbish of also being convenient for and sewage better with air current separation etc.. Since the lowest point of the storage chamber 14 is lower than the lowest point of the first port 15 in a state where the container body 1 is horizontally tilted, it is possible to prevent the liquid in the storage chamber 14 from flowing backward when the container body 1 is tilted or horizontally tilted, and it is safer and more reliable, and the height difference between the lowest point of the storage chamber 14 and the lowest point of the first port 15 can be made as large as possible, and the backflow preventing effect and the like are more preferable, while satisfying other structural properties of the cyclone suction type container body.

The air suction opening 2 is positioned at the top center of the cyclone separation cavity 11, the cyclone separation cavity 11 sequentially comprises a first cavity 111 and a second cavity 112 from top to bottom, the cross section of the first cavity 111 is equal from top to bottom, the cross section of the second cavity 112 is gradually reduced from top to bottom and extends to a first port 15, the dirt inlet 3 is communicated with the first cavity 111, under the action of suction force at the air suction opening 2, sewage mixed with garbage enters the first cavity 111 of the cyclone separation cavity 11 from the dirt inlet 3, then sewage mixed with garbage and airflow sequentially flow downwards along the first cavity 111 and the second cavity 112 in a spiral manner, the first cavity 111 can ensure that liquid can enter more uniformly and stably, the spiral effect is better, the sewage mixed with garbage and the airflow spirally flow downwards, the spiral speed can be compensated, the second cavity 112 can ensure that the spiral effect is more uniform, constant and the like, and is also convenient for better separating garbage and sewage from airflow and the like, but also facilitates prevention of liquid backflow, gas backflow, and the like when the container body 1 is tilted or tipped.

The air suction opening 2 is connected with the air suction pipe 4, the air suction pipe 4 extends into the cyclone separation cavity 11, air suction is facilitated to be better performed, spiral air in the cyclone separation cavity 11 is stronger, the effect is better, and the operation is more convenient.

The exhaust pipe 4 is provided with air inlet holes 41, the size, the shape and the like of the air inlet holes 41 are determined according to specific conditions, for example, the air inlet holes 41 are uniformly distributed in the circumferential direction of the exhaust pipe 4, so that the spiral air in the cyclone separation chamber 11 is stronger, the effect is better and the like. All the air inlet holes 41 are covered by the first filter screen 42, the first filter screen 42 only allows air to pass through, and sewage and garbage cannot pass through the meshes of the first filter screen 42, so that the first filter screen 42 can block the sewage and garbage from entering the exhaust pipe 4, and the sewage and garbage can be prevented from entering a corresponding suction device, even blocking a pipeline, damaging equipment and the like. The exhaust column 4 can be the back taper, and fresh air inlet 41 sets up along the toper lateral wall of exhaust column 4, if first filter screen 42 has sewage and rubbish, sewage and rubbish also can automatic landing downwards, and difficult jam first filter screen 42 etc. is safer, reliable etc.. The exhaust pipe 4 passes through the first cavity 111, and the lower end of the exhaust pipe 4 extends into the second cavity 112, so that the spiral air in the cyclone separation cavity 11 is stronger, the effect is better, and the like. In addition, the exhaust pipe 4 may also be in other suitable shapes in the prior art, and an arc surface or an inclined surface is arranged on the outer side of the exhaust pipe 4, and the air inlet holes 41 are arranged on the arc surface or the inclined surface.

Suction opening 2 is connected with second connecting pipe 6, second connecting pipe 6 is located the top of container subject 1, the inner chamber cross section of 6 upper ends of second connecting pipe reduces from last to lower gradually, for example horn mouth etc. when being mingled with partly sewage in the air current that flows out through second connecting pipe 6, after the steam condensation, automatic landing downwards of inner wall that second connecting pipe 6 can be followed to sewage, prevent that sewage and rubbish from getting into corresponding suction device, block up the pipeline even, damage equipment etc. more safely, reliably etc.

The top of container body 1 is provided with the upper cover, and the upper cover can adopt sticky sealing connection etc. with container body 1, and suction opening 2 sets up on the upper cover, and it is more convenient etc. to operate. Further, the second connecting pipe 6 and the upper cover are integrally formed, so that the structure is more stable and reliable, and the operation is more convenient.

The top of exhaust column 4 is provided with first connecting portion 43, and first connecting portion 43 can be other suitable shapes among cylindrical or the prior art, is provided with in the second connecting pipe 6 with first connecting portion 43 matched with first cell body 61, and first connecting portion 43 inserts first cell body 61, can also carry out sticky sealed or set up buckle structure etc. more compact, firm.

The sewage inlet 3 is connected with the first connecting pipe 5, the first connecting pipe 5 is located outside the container main body 1, the first connecting pipe 5 is convenient for corresponding devices on the cleaning equipment to be connected, and the operation is more convenient.

The bottom of the container body 1 is provided with a drain outlet 13, the drain outlet 13 is communicated with the bottom of the storage cavity 14, the drain outlet 13 can be connected with a drain valve 7, the drain valve 7 is usually closed, and sewage and garbage in the container body 1 can be discharged regularly as required. In addition, under the suction effect of suction opening 2 department, if clean liquid such as clear water, washing liquid gets into cyclone 11 from advancing dirty mouthful 3, clean liquid and air current spiral downward flow can be cleaned in the container main part 1, opens blowoff valve 7 again, with the liquid discharge in the container main part 1 to realize the inside automatically cleaning of container main part 1, the operation is simpler, convenient, labour saving and time saving more etc..

Vessel 1 can be the staving, other suitable containers among box or the prior art, for example vessel 1 adopts staving structure, vessel 1 includes separation bucket 101 and storage bucket 102, whirlwind separation chamber 11 is the inner chamber of separation bucket 101, store the inner chamber of chamber 14 for storing bucket 102, the bottom of separation bucket 101 is provided with the apron 103 of being connected with the top of storing bucket 102, first opening 15 is located apron 103, apron 103 can adopt threaded connection with storage bucket 102, sticky sealing connection etc., the structure is simpler, firm, it is more convenient to operate etc.

The bottom of apron 103 is provided with downward convex first bulge 104, and first opening 15 is located first bulge 104 to make first opening 15 protrusion in storage chamber 14, can prevent backward flow etc. better, safer, stable, reliable. The bottom of the cover plate 103 is further provided with a first connecting sleeve 105 connected with the storage barrel 102, the first protruding portion 104 is located in the first connecting sleeve 105, a first sealing ring 106 can be further arranged between the first connecting sleeve 105 and the storage barrel 102, connection is more convenient and tight, and the structure is more compact, stable and reliable.

Compared with the prior art, the utility model has the advantages that: the sewage and the garbage are convenient to be better separated from the airflow through the spiral effect, the sewage and the garbage are not easy to be attached to the inner wall of the container main body, the cleanness and the like in the container main body 1 can be better ensured, and the sewage and the garbage are not easy to enter a corresponding suction device or even block a pipeline or damage equipment; the cross section of the second cavity 112 is gradually reduced from top to bottom, the air suction opening 2 is positioned in the center of the top of the cyclone separation cavity 11, the dirt inlet 3 is communicated with the first cavity 111, the first cavity 111 can ensure that liquid can enter more uniformly and stably, the spiral effect is better, sewage mixed with garbage and airflow spirally flow downwards, the second cavity 112 can compensate the spiral speed, the spiral effect can be ensured to be more uniform and constant, the garbage and the sewage can be better separated from the airflow, and the like; in a state where the container body 1 is horizontally tilted, the lowest point of the reservoir chamber 14 is lower than the lowest point of the first port 15, and the lowest point of the reservoir chamber 14 and the lowest point of the first port 15 have a certain height difference, so that it is possible to prevent the liquid in the reservoir chamber 14 from flowing backward or the like when the container body 1 is tilted or horizontally tilted; the first filter screen 42 on the exhaust pipe 4 can prevent sewage and garbage from entering the exhaust pipe 4, the exhaust pipe 4 can be in an inverted cone shape, the air inlet holes 41 are arranged along the conical outer side wall of the exhaust pipe 4, and the sewage and garbage on the first filter screen 42 can automatically slide downwards; the air suction opening 2 is connected with a second connecting pipe 6, the cross section of an inner cavity at the upper end of the second connecting pipe 6 is gradually reduced from top to bottom, and sewage can automatically slide down along the inner wall of the second connecting pipe 6; the sewage outlet 13 and the sewage valve 7 are convenient for discharging sewage and garbage in the container body 1 regularly as required; therefore, the stability, safety, reliability, cleaning effect, service life and the like of the product are improved, the higher and higher requirements of people can be met, and the application and development of the product are enlarged.

The above embodiments of the present invention are only for illustrating the technical solutions of the present invention, and not for limiting the same, it should be understood that modifications or substitutions for those skilled in the art can be made on the basis of the above description without departing from the inventive concept, and all such modifications and substitutions should fall within the protection scope of the appended claims. In this case all the details may be replaced with equivalent elements, and the materials, shapes and dimensions may be any.

Claims

1. A dirty cleaning device of anti-return for cleaning equipment, characterized in that, include vessel (1) and set up suction opening (2) and advance dirty mouthful (3) on vessel (1), from last cyclone chamber (11) and storage chamber (14) have set gradually under to in vessel (1), storage chamber (14) with the junction of cyclone chamber (11) forms first opening (15), the cross section of cyclone chamber (11) lower extreme reduces gradually and extends to from last to under to first opening (15), suction opening (2) with advance dirty mouthful (3) respectively with cyclone chamber (11) intercommunication under the suction effect of suction opening (2) department, sewage that has mixed with rubbish follow advance dirty mouthful (3) and get into cyclone chamber (11) and follow cyclone chamber (11) spiral flows downwards in store chamber (14), the sewage mixed with the garbage is finally separated from the airflow, and the lowest point of the storage cavity (14) is lower than that of the first through opening (15) in a state that the container body (1) is horizontally poured.

2. The device for preventing back-flow dirty cleaning for cleaning equipment according to claim 1, wherein the suction opening (2) is located at a top center of the cyclone separation chamber (11), the cyclone separation chamber (11) sequentially comprises a first chamber (111) and a second chamber (112) from top to bottom, a cross section of the first chamber (111) is equal from top to bottom, a cross section of the second chamber (112) is gradually reduced from top to bottom and extends to the first through opening (15), and the dirty inlet (3) is communicated with the first chamber (111).

3. The anti-backflow dirty cleaning device for a cleaning appliance according to claim 2, characterized in that the suction opening (2) is connected to a suction line (4), the suction line (4) extending into the cyclone chamber (11).

4. The anti-backflow dirt cleaning device for a cleaning apparatus according to claim 3, characterized in that air inlet openings (41) are provided on the extraction duct (4), all the air inlet openings (41) being covered by a first screen (42), the first screen (42) being used to block sewage and waste from entering the extraction duct (4), the extraction duct (4) passing through the first chamber (111), and the lower end of the extraction duct (4) extending into the second chamber (112).

5. The anti-backflow dirt cleaning device for the cleaning equipment as claimed in claim 4, characterized in that the suction opening (2) is connected with a second connecting pipe (6), the second connecting pipe (6) is located above the container body (1), and the inner cavity cross section of the upper end of the second connecting pipe (6) is gradually reduced from top to bottom.

6. The anti-backflow contamination cleaning device for a cleaning apparatus according to claim 5, wherein an upper cover (12) is provided on a top of the container body (1), the suction opening (2) is provided on the upper cover (12), and the second connection pipe (6) is integrally formed with the upper cover (12).

7. The backflow-preventing dirt cleaning device for a cleaning apparatus as claimed in claim 1, characterized in that a drain outlet (13) is provided at the bottom of the container body (1), the drain outlet (13) communicating with the bottom of the storage chamber (14).

8. The backflow-preventing dirt-cleaning device for a cleaning apparatus according to any one of claims 1 to 7, wherein the container body (1) includes a separation tub (101) and a storage tub (102), the cyclone chamber (11) is an inner chamber of the separation tub (101), the storage chamber (14) is an inner chamber of the storage tub (102), a cover plate (103) connected to a top of the storage tub (102) is provided at a bottom of the separation tub (101), and the first through port (15) is located on the cover plate (103).

9. The anti-backflow contamination cleaning device for a cleaning apparatus according to claim 8, wherein a bottom of the cover plate (103) is provided with a first protrusion (104) protruding downward, and the first through opening (15) is located on the first protrusion (104).

10. A backflow-preventing dirty-cleaning device for a cleaning appliance according to claim 9, wherein the bottom of the cover plate (103) is provided with a first coupling sleeve (105) connected to the storage tank (102), the first protrusion (104) is located in the first coupling sleeve (105), and a first sealing ring (106) is arranged between the first coupling sleeve (105) and the storage tank (102).