Sewage tank and wet-type cleaning equipment

Abstract

The invention provides a sewage tank and wet cleaning equipment. The sewage tank comprises a tank body and a separation device arranged in a containing space. A containing space is defined by the box body. The separating device is at least partially installed in the containing space. The separation device comprises a separation structure, and the separation structure divides the containing space into a separation cavity located on the upstream of the separation structure and a liquid storage cavity located on the downstream of the separation structure. Wherein the separation structure comprises a first baffle and a second baffle arranged on the side, close to the liquid storage cavity, of the first baffle, the first baffle is provided with at least one first through hole, and the second baffle is provided with at least one second through hole; the first baffle and the second baffle jointly define a fluid channel, and the fluid channel is in fluid communication with the first through hole and the second through hole. When the sewage tank is located at the horizontal position, the second through hole is located above the first through hole in the vertical direction, and the opening direction of the second through hole is the first direction or the second direction.

Description

Technical Field

[0001] The present invention relates to the technical field of cleaning equipment, and in particular to a sewage tank and wet cleaning equipment. Background Art

[0002] A floor scrubber is a type of wet cleaning equipment, primarily used for wet cleaning of floors. It can recover liquid through a dirt recovery system. This system typically includes a suction motor to generate a suction airflow and a sewage tank to recover the dirt.

[0003] To diversify the scrubber's usage, the machine's body can be rotated to lie nearly flush against the ground, allowing it to clean areas like under beds and sofas. At this point, the water tank is essentially horizontal. When the water tank is horizontal, the liquid is close to the suction port of the suction motor, potentially causing it to be sucked into the motor, shortening its lifespan. Summary of the Invention

[0004] In view of the deficiencies in the above-mentioned technologies, the present invention provides a sewage tank and a wet cleaning device, which can effectively reduce the liquid in the sewage tank from being sucked into the suction motor during use.

[0005] In one aspect, the present invention provides a sewage tank comprising A box body defining a receiving space; a separation device at least partially installed in the accommodating space, the separation device comprising a partition structure, the partition structure dividing the accommodating space into a separation chamber located upstream of the partition structure and a liquid storage chamber located downstream of the partition structure; The partition structure includes a first baffle and a second baffle disposed on a side of the first baffle close to the liquid storage chamber, the first baffle having at least one first through hole, and the second baffle having at least one second through hole; the first baffle and the second baffle jointly define a fluid channel, and the fluid channel fluidically connects the first through hole and the second through hole; When the sewage tank is in a horizontal position, the second through hole is located above the first through hole in the vertical direction, and the opening direction of the second through hole is the first direction or the second direction, or the opening direction of the second through hole is any direction between the first direction and the second direction, the first direction is a direction in which the opening direction of the second through hole is substantially parallel to the liquid surface, and the second direction is a direction in which the opening direction of the second through hole is perpendicular to the liquid surface.

[0006] Optionally, the second baffle includes a top wall and a side wall, and the second through hole is provided on the side wall.

[0007] Optionally, the second baffle includes at least two second through holes, and two of the second through holes are respectively arranged at opposite positions of the side wall along the width direction of the sewage tank.

[0008] Optionally, the first baffle is further provided with at least one vent hole communicating with the separation chamber and the liquid storage chamber, and when the sewage tank is in a horizontal position, an outlet of the vent hole faces the wall of the sewage tank.

[0009] Optionally, a shielding plate is provided at the lower edge of the second through hole, and the shielding plate is used to block at least part of the liquid in the liquid storage tank from entering the fluid channel through the second through hole.

[0010] Optionally, a one-way valve structure is provided at the first through hole, and the one-way valve structure is configured to prevent at least part of the liquid in the fluid channel from flowing into the separation chamber.

[0011] Optionally, it further includes a filter plate arranged on a side of the first baffle close to the separation chamber; the filter plate is rotatably arranged on the first baffle.

[0012] Optionally, the box body is further defined with a liquid inlet pipe, and a gas-liquid separator is provided at the liquid outlet of the liquid inlet pipe.

[0013] Optionally, the separation chamber is further provided with a filter screen, which is detachably mounted at the liquid outlet and is used to contain solid dirt.

[0014] Optionally, the filter is detachably and washably installed on the gas-liquid separator.

[0015] On the other hand, the present invention also provides a wet cleaning device, comprising: The suction motor is used to generate a suction airflow, wherein the suction airflow recovers the dirty liquid into the sewage tank as described in any one of the above items.

[0016] The present invention provides a sewage tank and wet cleaning equipment. The sewage tank includes a housing and a separation device disposed within a storage space. The housing defines a storage space. The separation device is at least partially mounted within the storage space. The separation device includes a partition structure that divides the storage space into a separation chamber located upstream of the partition structure and a liquid storage chamber located downstream of the partition structure. The partition structure includes a first baffle and a second baffle disposed on a side of the first baffle proximate to the liquid storage chamber. The first baffle defines at least one first through-hole, and the second baffle defines at least one second through-hole. The first baffle and the second baffle together define a fluid channel that fluidically connects the first and second through-holes. When the sewage tank is in a horizontal position, the second through-hole is vertically located above the first through-hole, and the second through-hole opens in a first direction or a second direction, or in any direction between the first and second directions. The first direction is the direction in which the second through-hole opens substantially parallel to the liquid surface, and the second direction is the direction in which the second through-hole opens perpendicular to the liquid surface. The separation device is provided in the sewage tank, which can effectively prevent the liquid from returning from the liquid storage chamber to the separation chamber when the sewage tank is used horizontally. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the structure of a wet cleaning device in one embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the wet cleaning equipment during normal use; Figure 3 This is a schematic diagram of the structure of the wet cleaning equipment when used close to the ground; Figure 4 Schematic diagram of the structure of a sewage tank in one embodiment (when the sewage tank is upright); Figure 5 This is a structural diagram of a sewage tank in one embodiment (when the sewage tank is used horizontally); Figure 6 This is a schematic diagram of the internal structure of a sewage tank in one embodiment; Figure 7 This is a schematic diagram of the structure of the sewage tank without the box body in one embodiment (when the sewage tank is tilted); Figure 8 This is a schematic diagram of the structure of the sewage tank without the box body in one embodiment (when the sewage tank is horizontal); Figure 9 This is a structural diagram of a sewage tank without the box body in another embodiment (when the sewage tank is horizontal); Figure 10 For the Figure 5 Schematic cross-section of the sewage tank in the middle BB direction; Figure 11 A schematic structural diagram showing the orientation of the second through hole opening in one embodiment (horizontally); Figure 12 A schematic structural diagram showing the orientation of the opening of the second through hole in one embodiment (diagonally downward); Figure 13 A schematic structural diagram showing the opening direction of the second through hole in one embodiment (a shielding plate is provided at the lower edge of the through hole); Figure 14 A schematic structural diagram showing the orientation of the opening of the second through hole in one embodiment (vertically downward); Figure 15 For the Figure 4 Schematic cross-section of the sewage tank in the AA direction; Figure 16 This is a schematic structural diagram of another embodiment in which the second baffle is columnar; Figure 17 FIG. 4 is a schematic structural diagram of another embodiment in which the second baffle is spherical. FIG. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0019] It should be noted that if a directional indication is involved in an embodiment of the present invention, the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0020] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0021] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0022] refer to Figure 1-3 , the figure discloses a wet cleaning device 100, which includes a main body 101, a handle and a cleaning head 102 respectively located at opposite ends of the main body 101. The cleaning head 102 is pivotally mounted on the main body 101. The main body 101 can be rotated about 90 degrees relative to the cleaning head 102 so that the main body 101 can be substantially parallel to the surface to be cleaned (refer to Figure 3 ). In this way, during use, the height of the entire cleaning equipment will become very low, which is conducive to cleaning small spaces such as under the bed and the bottom of the cabinet.

[0023] Continue to refer Figure 1-3 The wet cleaning device 100 generally includes a suction motor and a sewage tank 1. The suction motor generates a suction airflow that returns the contaminated liquid to the sewage tank 1. To prevent the suction motor from sucking liquid from the sewage tank 1 into the sewage tank 1 when it is horizontal, which would not only affect the performance of the filter (such as a sponge or HEPA filter) upstream of the motor but also the operation of the suction motor, the present application has made certain improvements to the sewage tank 1.

[0024] refer to Figure 4-11 15, the figure discloses a sewage tank 1, which includes a housing 11 and a separation device 12 at least partially installed in a receiving space. The housing 11 defines a receiving space. The sewage tank 1 is provided with a fluid inlet. Air flow can enter the interior of the sewage tank 1 from the fluid inlet. The interior of the housing 11 may define a liquid inlet pipe 13, and the fluid inlet is a liquid outlet 15 of the liquid inlet pipe 13 (refer to FIG. Figure 15 ). In other embodiments, the liquid inlet pipe 13 can also be provided on the outside of the housing 11, or on the main unit 101, and the fluid inlet of the sewage tank 1 is connected to the liquid inlet pipe 13. The separation device 12 is at least partially installed in the accommodating space, and the separation device 12 includes a partition structure 121. The partition structure 121 divides the accommodating space into a separation chamber 122 located upstream of the partition structure and a liquid storage chamber 123 located downstream of the partition structure. The fluid inlet of the sewage tank 1 is provided in the separation chamber 122. After the dirty fluid enters the separation chamber 122, it is separated into gas and liquid by the gas-liquid separator 14 provided in the separation chamber 122. Reference Figure 15The gas-liquid separator 14 is located at the liquid outlet 15 of the liquid inlet pipe 13. The separation chamber 122 is also equipped with a filter (not shown). The filter is removably mounted at the liquid outlet 15 and is used to contain solid impurities. It is a disposable, consumable item. The filter is removable and washable and is mounted on the gas-liquid separator 14. After gas-liquid separation, the liquid flows into the liquid storage chamber 123 due to gravity. The gas is then discharged from the main unit 101 by the suction motor.

[0025] When there is a lot of liquid in the separation chamber 122, some of the liquid will be sucked into the suction motor. In order to reduce the amount of liquid in the separation chamber 122 as much as possible, on the one hand, the flow area between the separation chamber 122 and the liquid storage chamber 123 can be increased to allow the liquid to flow quickly into the liquid storage chamber 123. On the other hand, when the sewage tank 1 is in a horizontal position (such as Figure 3 The location of the sewage tank 1 and Figure 5 The position of the sewage tank 1 is shown in FIG), and the liquid in the liquid storage chamber 123 is ensured not to flow back into the separation chamber 122. Figure 15 Specifically, a partition structure 121 is provided between the separation chamber 122 and the liquid storage chamber 123. The partition structure 121 includes a first baffle 124 and a second baffle 125 disposed on a side of the first baffle 124 closer to the liquid storage chamber 123. The first baffle 124 defines at least one first through-hole 128, and the second baffle 125 defines at least one second through-hole 129. The first baffle 124 and the second baffle 125 together define a fluid channel, which fluidically connects the first through-hole 128 and the second through-hole 129.

[0026] refer to Figure 10 and 11 When the sewage tank 1 is in a horizontal position, the second through hole 129 is located above the first through hole 128 in the vertical direction. The above here does not specifically refer to the above, but can be obliquely above. The opening direction of the second through hole 129 is the first direction or the second direction, or the opening direction of the second through hole 129 is any direction between the first direction and the second direction (such as Figure 12 The first direction is the direction in which the opening direction of the second through hole 129 is substantially parallel to the liquid surface (eg Figure 11 The second direction is the direction of the opening of the second through hole 129 perpendicular to the liquid surface (as shown by the arrow in the middle). Figure 14 The opening direction of the second through hole 129 is toward the two sides of the box body 11 or toward the liquid surface (when the sewage tank 1 is placed horizontally). This arrangement can effectively prevent the liquid in the liquid storage tank from swaying back and forth when the wet cleaning device 100 moves back and forth and entering the fluid channel.

[0027] The second baffle 125 includes different embodiments, Figure 11 and 12In one embodiment, the second baffle 125 includes a top wall 126 and a side wall 127, and the second through hole 129 is provided on the side wall 127. The extension direction of the side wall 127 is substantially parallel to the height direction of the sewage tank 1. The two side walls are substantially parallel. In other embodiments, along the extension direction from top to bottom in the sewage tank, the side wall 127 gradually approaches the inner wall of the tank body, that is, when the sewage tank is upright, the width of the lower part of the entire second baffle is greater than the width of the upper part of the second baffle, and along the Figure 15 In the cross-sectional direction shown, the cross-section of the second baffle is trapezoidal. In this way, the width below the second baffle is relatively large, which can effectively prevent the liquid from rolling in the direction of the first baffle. In another embodiment, the cross-sectional area of ​​the fluid channel gradually decreases along the flow direction of the fluid.

[0028] If the second through-holes 129 are located on the top wall 126, some liquid may flow into the fluid channel through the through-holes in the top wall 126 when the liquid in the tank sloshes significantly. Placing the second through-holes 129 on the side walls 127 effectively reduces the amount of liquid entering the fluid channel. The second baffle 125 includes at least two second through-holes 129, two of which are located at opposing positions on the side walls 127 along the width of the sewage tank 1.

[0029] refer to Figure 16 and 17 In other embodiments, the second baffle 125 may be hemispherical (e.g. Figure 17 as shown), tubular (as Figure 16 As shown) or other irregularly shaped structures, the specific structure can be determined according to the space in the sewage tank 1, which will not be described in detail here.

[0030] refer to Figure 9 、 16 To ensure rapid flow of liquid from the separation chamber 122 into the liquid storage chamber 123, the first baffle 124 is further provided with at least one vent hole 130 connecting the separation chamber 122 and the liquid storage chamber 123. When the sewage tank 1 is horizontal, the outlet of the vent hole 130 faces the wall of the sewage tank 1. When the sewage tank 1 is horizontally positioned, the vent hole 130 is positioned higher than the second through hole 129, effectively preventing the fluid in the liquid storage chamber 123 from flowing back into the separation chamber 122 through the vent hole 130. Preferably, the opening of the vent hole 130 faces upward.

[0031] refer to Figure 13 Furthermore, in order to prevent the liquid in the liquid storage chamber 123 from entering the fluid channel, a shielding plate 131 is provided at the lower edge of the second through hole 129, and the shielding plate 131 is used to block at least part of the liquid in the liquid storage tank from entering the fluid channel through the second through hole 129.

[0032] To further prevent liquid from returning from the fluid channel to the separation chamber 122, a one-way valve structure is provided at the first through hole 128. The one-way valve structure is configured to prevent at least a portion of the liquid in the fluid channel from flowing into the separation chamber 122. The one-way valve structure can be a reversible plate-like structure that can seal the first through hole 128. The one-way valve structure can also be a structure similar to a duckbill valve. Those skilled in the art can also use other structures with the above functions, which will not be described in detail here.

[0033] refer to Figure 15 To prevent large dirt particles from entering the fluid channel, the separation device 12 further includes a filter plate 132 disposed on the side of the first baffle 124 near the separation chamber 122. The filter plate 132 is rotatably mounted on the first baffle 124. The filter plate 132 has a plurality of fine meshes, through which liquid can flow out, while larger particles are retained on the filter screen.

[0034] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A sewage tank, characterized in that: include: A box body defining a receiving space; a separation device at least partially installed in the accommodating space, the separation device comprising a partition structure, the partition structure dividing the accommodating space into a separation chamber located upstream of the partition structure and a liquid storage chamber located downstream of the partition structure; The partition structure includes a first baffle and a second baffle disposed on a side of the first baffle close to the liquid storage chamber, the first baffle having at least one first through hole, and the second baffle having at least one second through hole; the first baffle and the second baffle jointly define a fluid channel, and the fluid channel fluidically connects the first through hole and the second through hole; When the sewage tank is in a horizontal position, the second through hole is located above the first through hole in the vertical direction, and the opening direction of the second through hole is the first direction or the second direction, or the opening direction of the second through hole is any direction between the first direction and the second direction, the first direction is a direction in which the opening direction of the second through hole is substantially parallel to the liquid surface, and the second direction is a direction in which the opening direction of the second through hole is perpendicular to the liquid surface.

2. The sewage tank according to claim 1, characterized in that The second baffle includes a top wall and a side wall, and the second through hole is provided on the side wall.

3. The sewage tank according to claim 2, characterized in that: The second baffle includes at least two second through holes, and two of the second through holes are respectively arranged at opposite positions of the side wall along the width direction of the sewage tank.

4. The sewage tank according to any one of claims 1 to 3, characterized in that: The first baffle is further provided with at least one vent hole communicating with the separation chamber and the liquid storage chamber. When the sewage tank is in a horizontal position, the outlet of the vent hole faces the wall of the sewage tank.

5. The sewage tank according to claim 3, characterized in that: A shielding plate is provided at the lower edge of the second through hole, and the shielding plate is used to block at least a portion of the liquid in the liquid storage tank from entering the fluid channel through the second through hole.

6. The sewage tank according to claim 1, characterized in that: A one-way valve structure is provided at the first through hole, and the one-way valve structure is configured to prevent at least a portion of the liquid in the fluid channel from flowing into the separation chamber.

7. The sewage tank according to claim 1, characterized in that It also includes a filter plate arranged on the side of the first baffle close to the separation chamber; the filter plate is rotatably arranged on the first baffle.

8. The sewage tank according to claim 7, characterized in that: The box body is further defined with a liquid inlet pipe, and a gas-liquid separator is provided at the liquid outlet of the liquid inlet pipe.

9. The sewage tank according to claim 8, characterized in that: The separation chamber is further provided with a filter screen, which is detachably mounted at the liquid outlet and is used to contain solid dirt.

10. The sewage tank according to claim 9, characterized in that: The filter screen is detachably and washably installed on the gas-liquid separator.

11. A wet cleaning device, characterized in that: include: A suction motor is used to generate a suction airflow, wherein the suction airflow recovers the dirty liquid into the sewage tank as claimed in any one of claims 1 to 10.

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