CN116807310A - Backflow-preventing dirt cleaning device for cleaning equipment - Google Patents

Abstract

The utility model provides a prevent dirty cleaning device of backward flow for cleaning equipment, including container main part and the suction opening and the dirty mouth of advance of setting on container main part, from last cyclone chamber and the storage chamber of having set gradually down in the container main part, the junction in storage chamber and cyclone chamber forms first through-hole, the cross section of cyclone chamber lower extreme reduces from last to extending to first through-hole gradually down, suction opening and the dirty mouthful intercommunication of advance respectively with cyclone chamber, under the suction force effect of suction opening department, the sewage that mixes rubbish gets into cyclone chamber and follow cyclone chamber spiral downflow and store in the chamber from advancing dirty mouthful. This disclosure can prevent to store intracavity liquid backward flow etc. through the effect of spiral, is convenient for sewage and rubbish and air current to separate better, and sewage and rubbish are difficult for attaching on the inner wall of container main part, and the cross section of cyclone separation chamber lower extreme reduces from last to down gradually, can guarantee that the spiral effect is more even, invariable etc..

Description

Backflow-preventing dirt cleaning device for cleaning equipment

Technical Field

The present disclosure relates to cleaning devices, and more particularly, to a backflow-preventing dirty cleaning apparatus for a cleaning device.

Background

Floor cleaning tools used by people in early days include brooms, mops, floor wipers and the like, and the tools mainly rely on manual operation of people to complete cleaning work. Along with the rapid development of technology and the continuous progress of society, the living conditions of people are continuously improved, the requirements on living environments are higher and higher, and the cleaning concept is more and more emphasized, so that the requirements of people on floor cleaning equipment, such as dust collectors, floor cleaners, rolling brush type cleaning equipment and the like, are also gradually improved. In order to better clean garbage, stains and the like attached to the ground, the conventional cleaning equipment is generally provided with a water supply system and the like for cleaning tools such as cleaning rollers and the like, and then suctions sewage into corresponding cleaning devices such as sewage barrels and the like for collection treatment. However, the existing cleaning device for the sewage bucket and the like of the cleaning equipment has the defects of structure, which easily causes sewage backflow, air flow backflow and the like, and garbage and the like in sewage are easily attached to the inner wall of the cleaning device for the sewage bucket and the like, so that the cleaning is very troublesome, the operation is very inconvenient, time and labor are wasted, the sewage, the garbage and the like in the sewage are not easy to be completely separated from the air flow, the sewage and the like easily enter the corresponding suction device, even block the pipeline, damage the equipment and the like, the stability, the reliability, the cleaning effect, the service life and the like of the product are reduced, the increasingly high requirements of people cannot be met, and the application and the development of the product are affected.

Disclosure of Invention

The purpose of the present disclosure is to provide a backflow-preventing and dirt-preventing cleaning device for a cleaning apparatus, which can solve at least one of the above technical problems, and the technical scheme of the present disclosure is as follows:

the utility model provides a prevent backward flow dirty cleaning device for cleaning equipment, including the container main part and set up the suction inlet and advance dirty mouth on the container main part, cyclone separation chamber and storage chamber have been set gradually from top to bottom in the container main part, the junction of storage chamber and cyclone separation chamber forms first through-hole, the cross section of cyclone separation chamber lower extreme reduces from top to bottom and extends to first through-hole, suction inlet and advance dirty mouthful respectively with cyclone separation chamber intercommunication, under suction force effect in suction inlet department, sewage that mixes with rubbish gets into cyclone separation chamber from advancing dirty mouthful and follow cyclone separation chamber spiral downwardly flow and store the chamber in, the sewage that mixes with rubbish is finally separated with the air current, under the state that container main part level emptys, the minimum of storage chamber is less than the minimum of first through-hole.

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 through opening, and the sewage inlet is communicated with the first chamber.

In some embodiments, the suction opening is connected to a suction tube that extends into the cyclonic separating chamber.

In some embodiments, the exhaust tube 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 tube, the exhaust tube passes through the first cavity, and the lower end of the exhaust tube extends into the second cavity.

In some embodiments, the suction port is connected to a second connection tube, the second connection tube being located above the container body, the cross-section of the inner cavity at the upper end of the second connection tube gradually decreasing from top to bottom.

In some embodiments, the top of the container body is provided with an upper cover, the suction opening is provided on 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, which communicates with the bottom of the storage cavity.

In some embodiments, the container body comprises a separation barrel and a storage barrel, the cyclone separation cavity is an inner cavity of the separation barrel, the storage cavity is an inner cavity of the storage barrel, a cover plate connected with the top of the storage barrel is arranged at the bottom of the separation barrel, and the first through hole is positioned on the cover plate.

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

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

The beneficial effects of the present disclosure are: in the use process, the dirty cleaning device is arranged on corresponding cleaning equipment such as a floor washer, a floor cleaner and the like, the exhaust port 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 floor, under the action of suction force at the exhaust port, the sewage mixed with garbage enters the cyclone separation cavity from the sewage inlet, then the sewage mixed with garbage and air flow spirally flow downwards into the storage cavity, the sewage mixed with garbage is finally separated with spiral air flow, the sewage mixed with garbage is deposited in the storage cavity, the air flow sequentially spirally flows upwards from the middle parts of the storage cavity and the cyclone separation cavity, finally the air flow flows out from the exhaust port, through the spiral action, the sewage and garbage are convenient to separate better from the air flow, the sewage and the garbage are not easy to adhere to the inner wall of the container main body, the device has the advantages that cleaning and the like in the container main body can be better guaranteed, sewage and garbage are not easy to enter the corresponding suction device, even the pipeline is blocked, equipment is damaged and the like, the cross section of the lower end of the cyclone separation cavity is gradually reduced from top to bottom, along with spiral downward flow of sewage and air flow mixed with garbage, spiral speed can be compensated, spiral effect is more uniform and constant and the like, garbage and sewage can be conveniently separated from the air flow better, and the like, under the state that the container main body is inclined horizontally, the lowest point of the storage cavity is lower than the lowest point of the first through hole, so that liquid backflow and the like in the storage cavity can be prevented when the container main body is inclined or inclined horizontally, the stability, safety, reliability, cleaning effect, service life and the like of products are improved, the increasingly high requirements of people can be met, and the application and development of the products are enlarged.

In addition, in the technical solutions of the present disclosure, the technical solutions may be implemented by adopting conventional means in the art, which are not specifically described.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or the prior art, the drawings that are required in the detailed description or the prior art will be briefly described, it will be apparent that the drawings in the following description are some embodiments of the present disclosure, and other drawings may be obtained according to the drawings without inventive effort for a person of ordinary skill in the art.

Fig. 1 is a cross-sectional view of an anti-backflow soil cleaning device for a cleaning apparatus in accordance with one embodiment of the present disclosure.

Fig. 2 is a partial enlarged view at a in fig. 1 of one embodiment of the present disclosure.

Fig. 3 is a cross-sectional view of a horizontal toppling state of an anti-backflow soil cleaning device for a cleaning apparatus according to one embodiment of the present disclosure.

Fig. 4 is a schematic structural view of a backflow prevention soil cleaning device for a cleaning apparatus according to an embodiment of the present disclosure.

Fig. 5 is an exploded view of an anti-backflow soil cleaning device for a cleaning apparatus according to one embodiment of the present disclosure.

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

The reference numerals in the drawings indicate that the container body 1, the separating vessel 101, the storage vessel 102, the cover plate 103, the first protruding part 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 drain 13, the storage chamber 14, the first through opening 15, the suction opening 2, the sewage inlet 3, the suction pipe 4, the air inlet 41, the first filter screen 42, the first connecting part 43, the first connecting pipe 5, the second connecting pipe 6, the first groove 61, and the drain valve 7.

Detailed Description

In order to make the objects, technical solutions and advantages of the present disclosure more apparent, the present disclosure will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are illustrative of some, but not all embodiments of the disclosure and are not intended to limit the disclosure. Based on the embodiments in this disclosure, all other embodiments that a person of ordinary skill in the art would obtain without making any inventive effort are within the scope of protection of this disclosure.

In the description of the present disclosure, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", "both ends", "two sides", "bottom", "top", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely for convenience in describing the present disclosure and simplifying the description, and do not indicate or imply that the elements referred to must have a specific orientation or be configured and operated in a specific orientation, and thus should not be construed as limiting the present disclosure. Furthermore, the terms "first," "second," "superior," "subordinate," "primary," "secondary," and the like are used for descriptive purposes only and may be used simply to more clearly distinguish between different components and are not to be construed as indicating or implying relative importance.

In the description of the present disclosure, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediary, or in communication between two elements. The specific meaning of the terms in this disclosure will be understood by those of ordinary skill in the art in the specific context.

Referring to fig. 1 to 6, there is schematically shown a backflow preventing soil cleaning device for a cleaning apparatus according to the present disclosure, mainly for a corresponding cleaning apparatus of a floor scrubber, etc. The dirt cleaning device comprises a container main body 1, wherein the container main body 1 can be a barrel body, a box body or other suitable containers in the prior art, an air suction opening 2 and a dirt inlet 3 are arranged on the container main body 1, a cyclone separation cavity 11 and a storage cavity 14 are sequentially arranged in the container main body 1 from top to bottom, the air suction opening 2 and the dirt inlet 3 are respectively communicated with the cyclone separation cavity 11, and a first through opening 15 is formed at the intersection of the storage cavity 14 and the cyclone separation cavity 11. The cyclone chamber 11 has a lower end with a cross-section which decreases from top to bottom and extends to a first through opening 15, for example in the form of an inverted cone or other suitable shape as known in the art.

Referring to fig. 3, in a state that 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 hole 15, and the lowest point of the storage cavity 14 and the lowest point of the first through hole 15 have a certain height difference, for example, the first through hole 15 is eccentric to the storage cavity 14, the storage cavity 14 is tapered, or the storage cavity 14 is in other suitable shape in the prior art.

In the use, this dirty cleaning device installs on corresponding cleaning equipment such as washing machine, wipe ground machine, exhaust port 2 is connected with corresponding suction device such as air exhauster, produce the sewage that mixes with rubbish after cleaning equipment washs ground, under the suction effect of exhaust port 2 department, sewage and air current spiral that mixes with rubbish down flow into storage cavity 14 from inlet 3 entering cyclone, then sewage and air current spiral that mixes with rubbish down flow into storage cavity 14, the sewage that mixes with rubbish finally separates with spiral air current, the sewage deposit that mixes with in storage cavity 14, and the air current flows from the middle part of storage cavity 14 and cyclone separation cavity 11 from the bottom upwards spiral in proper order, finally the air current flows from exhaust port 2, through the effect of spiral, be convenient for sewage and rubbish and air current better separate, sewage and rubbish are difficult for attaching on the inner wall of container main part, can guarantee clean etc. in the container main part 1 better, sewage and rubbish also are difficult for getting into corresponding suction device, even block up pipeline, damage equipment etc. even, the cross section of cyclone separation cavity 11 lower extreme reduces gradually from top to bottom, along with mixing with sewage and air current and spiral flow down flow, can guarantee the even spiral to the effect that can be more evenly separated with rubbish, the spiral flow down, and the effect can be better guaranteed, etc. to the spiral flow is more convenient for the garbage. In the state that 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 hole 15, so that when the container body 1 is tilted or horizontally tilted, liquid in the storage cavity 14 can be prevented from flowing back, and the like, the cyclone suction type container is safer and more reliable, and on the premise that other structural performances of the cyclone suction type container body are met, the height difference between the lowest point of the storage cavity 14 and the lowest point of the first through hole 15 can be as large as possible, and the backflow prevention effect and the like are better.

The suction opening 2 is located at the top center of the cyclone separating chamber 11, the cyclone separating chamber 11 sequentially comprises a first chamber 111 and a second chamber 112 from top to bottom, the cross section of the first chamber 111 is equal from top to bottom, the cross section of the second chamber 112 is gradually reduced from top to bottom and extends to the first through opening 15, the sewage inlet 3 is communicated with the first chamber 111, sewage mixed with garbage enters the first chamber 111 of the cyclone separating chamber 11 from the sewage inlet 3 under the action of suction force at the suction opening 2, then the sewage mixed with garbage and air flow sequentially flow downwards along the first chamber 111 and the second chamber 112 in a spiral manner, the first chamber 111 can ensure that liquid enters more uniformly and stably, the spiral effect is better, the spiral speed can be compensated for as the sewage mixed with garbage and air flow downwards in a spiral manner, the second chamber 112 can ensure that the spiral effect is more uniform and constant, the garbage and the sewage are also convenient to separate from the air flow better, and the like, and when the container main body 1 inclines or topples down, the liquid backflow, the air backflow and the like are also convenient to prevent.

The exhaust port 2 is connected with the exhaust pipe 4, and the exhaust pipe 4 stretches into the cyclone separation cavity 11, so that the exhaust can be conveniently and better performed, the spiral wind 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 the air inlet holes 41, and the size, shape and the like of the air inlet holes 41 are determined according to specific conditions, for example, the exhaust pipe 4 is uniformly provided with the air inlet holes 41 along the circumferential direction, so that the spiral wind in the cyclone separation cavity 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 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, prevent the sewage and garbage from entering corresponding suction devices, even block pipelines, damage equipment and the like. The exhaust pipe 4 can be of an inverted cone shape, the air inlet holes 41 are formed along the conical outer side wall of the exhaust pipe 4, and if the first filter screen 42 is provided with sewage and garbage, the sewage and garbage can automatically slide down, the first filter screen 42 is not easy to be blocked, and the like, so that the filter screen is safer and more reliable. The exhaust pipe 4 passes through the first cavity 111, and the lower end of the exhaust pipe 4 stretches into the second cavity 112, so that the spiral wind in the cyclone separation cavity 11 is stronger, better in effect and the like. In addition, the exhaust tube 4 may be other suitable shapes in the prior art, and an arc surface or an inclined surface is provided on the outer side of the exhaust tube 4, and the air inlet 41 is provided on the arc surface or the inclined surface.

The exhaust port 2 is connected with the second connecting pipe 6, and the second connecting pipe 6 is located the top of container main part 1, and the inner chamber cross section of second connecting pipe 6 upper end reduces from top to bottom gradually, like horn mouth etc. when mix with some sewage in the air current that flows out through the second connecting pipe 6, after the steam condensation, sewage can follow the inner wall automatic downward landing of second connecting pipe 6, prevents sewage and rubbish entering corresponding suction device, even blocks up pipeline, damage equipment etc. safer, reliable etc..

The top of container main part 1 is provided with the upper cover, and upper cover and container main part 1 can adopt adhesive sealing connection etc. and air extraction opening 2 sets up on the upper cover, and the operation is more convenient etc.. 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 cylindrical or other suitable shapes in 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 adhesive seal or set up buckle structure etc. and the structure is compacter, firm.

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

The bottom of the container body 1 is provided with a drain 13, the drain 13 is communicated with the bottom of the storage cavity 14, the drain 13 can be connected with a drain valve 7, and the drain valve 7 is normally closed, so that sewage and garbage in the container body 1 can be discharged periodically as required. In addition, under the suction force action of the air suction port 2, if cleaning liquid such as clear water, cleaning liquid and the like enters the cyclone separation cavity 11 from the dirt inlet 3, the cleaning liquid and airflow spirally flow downwards, the interior of the container main body 1 can be cleaned, the blow-down valve 7 is opened again, and the liquid in the container main body 1 is discharged, so that the self-cleaning of the interior of the container main body 1 is realized, the operation is simpler and more convenient, the time and the labor are saved, and the like.

The container body 1 can be staving, box or other suitable containers among the prior art, for example, container body 1 adopts staving formula structure, and container body 1 includes separation barrel 101 and storage barrel 102, and cyclone chamber 11 is the inner chamber of separation barrel 101, and storage chamber 14 is the inner chamber of storage barrel 102, and the bottom of separation barrel 101 is provided with the apron 103 of being connected with the top of storage barrel 102, and first opening 15 is located apron 103, and apron 103 can adopt threaded connection, gluey sealing connection etc. with storage barrel 102, and the structure is simpler, firm, and it is more convenient to operate etc..

The bottom of apron 103 is provided with the first bulge 104 of downward bulge, and first through-hole 15 is located first bulge 104 to make first through-hole 15 bulge in storage chamber 14, can prevent backward flow etc. better, safer, stable, reliable. The bottom of apron 103 still is provided with the first adapter sleeve 105 of being connected with storage barrel 102, and first bulge 104 is located first adapter sleeve 105, still can be provided with first sealing washer 106 between first adapter sleeve 105 and the storage barrel 102, connects more conveniently, closely, and the structure is compacter, firm, reliable.

Compared with the prior art, the advantages of the present disclosure are: through the action of the spiral, sewage and garbage are convenient to separate from air flow better, the sewage and garbage are not easy to attach to the inner wall of the container main body, the cleaning and the like in the container main body 1 can be better ensured, and the sewage and garbage are not easy to enter a corresponding suction device, even block a pipeline, damage equipment and the like; the cross section of the second cavity 112 gradually decreases from top to bottom, the air suction opening 2 is positioned at the top center of the cyclone separation cavity 11, the sewage inlet 3 is communicated with the first cavity 111, the first cavity 111 can ensure that liquid enters more uniformly and stably, the spiral effect is better, the second cavity 112 can compensate the spiral speed along with the spiral downward flow of sewage mixed with garbage and air flow, the spiral effect can be ensured to be more uniform and constant, and the garbage and sewage can be conveniently separated from the air flow better; in a state where the container body 1 is horizontally tilted, the lowest point of the storage chamber 14 is lower than the lowest point of the first through hole 15, and the lowest point of the storage chamber 14 has a certain height difference from the lowest point of the first through hole 15, so that when the container body 1 is tilted or horizontally tilted, liquid in the storage chamber 14 can be prevented from flowing back or the like; 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 41 is 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 down; the exhaust port 2 is connected with the second connecting pipe 6, the cross section of the 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 main body 1 periodically according to the need; therefore, the stability, the safety, the reliability, the cleaning effect, the service life and the like of the product are improved, the higher and higher requirements of people can be met, and the application and the development of the product are expanded.

The foregoing description of some embodiments of the present disclosure is merely illustrative of the technical solutions of the present disclosure and not limiting thereof, and it should be understood that modifications and substitutions can be made by those skilled in the art without departing from the inventive concept of the present disclosure, and all such modifications and substitutions shall fall within the scope of the appended claims of the present disclosure. In this case, all details may be replaced with equivalent elements, and the materials, shapes and sizes may be arbitrary.

Claims (10)

1. Backflow-preventing dirt cleaning device for cleaning equipment, which is characterized by comprising a container main body (1) and an exhaust port (2) and a dirt inlet (3) which are arranged on the container main body (1), wherein a cyclone separation cavity (11) and a storage cavity (14) are sequentially arranged in the container main body (1) from top to bottom, a first through port (15) is formed at the junction of the storage cavity (14) and the cyclone separation cavity (11), the cross section of the lower end of the cyclone separation cavity (11) gradually decreases from top to bottom and extends to the first through port (15), the exhaust port (2) and the dirt inlet (3) are respectively communicated with the cyclone separation cavity (11), under the action of suction force at the exhaust port (2), sewage mixed with garbage enters the cyclone separation cavity (11) from the dirt inlet (3) and flows into the storage cavity (14) along the cyclone separation cavity (11) in a spiral manner downwards, the mixed sewage is finally separated from the airflow, and the sewage is in a state of being lower than the lowest through port (14) in the horizontal state of the container main body (1).

2. Backflow-preventing dirt cleaning device for cleaning apparatus according to claim 1, characterized in that the suction opening (2) is located in the top center of the cyclone chamber (11), the cyclone chamber (11) comprises a first chamber (111) and a second chamber (112) in sequence from top to bottom, the cross section of the first chamber (111) is equal from top to bottom, the cross section of the second chamber (112) is gradually reduced from top to bottom and extends to the first through opening (15), and the dirt inlet (3) communicates with the first chamber (111).

3. Backflow-preventing dirt cleaning device for cleaning apparatus according to claim 2, characterized in that the suction opening (2) is connected with a suction pipe (4), which suction pipe (4) extends into the cyclone chamber (11).

4. A backflow-preventing dirty cleaning apparatus for a cleaning appliance according to claim 3, wherein the suction pipe (4) is provided with air inlet openings (41), all of the air inlet openings (41) being covered by a first screen (42), the first screen (42) being adapted to block sewage and waste from entering the suction pipe (4), the suction pipe (4) passing through the first chamber (111), and the lower end of the suction pipe (4) extending into the second chamber (112).

5. The backflow-preventing dirt cleaning device for a cleaning apparatus according to claim 4, wherein the suction port (2) is connected with a second connecting pipe (6), the second connecting pipe (6) is located above the container main body (1), and the cross section of the inner cavity at the upper end of the second connecting pipe (6) is gradually reduced from top to bottom.

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

7. Backflow prevention dirty cleaning apparatus for a cleaning device according to claim 1, characterized in that the bottom of the container body (1) is provided with a drain (13), the drain (13) being in communication with the bottom of the storage chamber (14).

8. The backflow prevention dirt cleaning apparatus for a cleaning device 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 cavity of the separation tub (101), the storage chamber (14) is an inner cavity of the storage tub (102), a bottom of the separation tub (101) is provided with a cover plate (103) connected with a top of the storage tub (102), and the first through-port (15) is located on the cover plate (103).

9. The backflow prevention dirt cleaning device for a cleaning apparatus according to claim 8, characterized in that the bottom of the cover plate (103) is provided with a first projection (104) projecting downward, the first through opening (15) being located on the first projection (104).

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