Dirt collection box and cleaning robot

Abstract

The present application provides a dirt collection box and a cleaning robot. The dirt collection box includes a box body and a stop portion. An air extraction port and a suction port are formed in the box body. The air extraction port is communicated with an external blower. The external blower sucks the air in the box body through the air extraction port to generate a negative pressure at the suction port. External dirt is sucked into the box body from the suction port under the action of the negative pressure. The stop portion is arranged in the box body and located on the path from the suction port to the air extraction port to stop the dirt entering from the suction port from flowing towards the air extraction port, thereby preventing the dirt from flowing to the blower and causing damage to it. The dirt collection box of this embodiment effectively reduces the risk of the air extraction port being blocked and damaged by dirt, ensuring the safety and stability of the cleaning robot during operation.

Description

Technical Field

[0001] This application relates to the field of cleaning robots, and particularly to a dirt collection box and a cleaning robot. Background Art

[0002] A cleaning robot is a type of intelligent household cleaning device. The cleaning robot can automatically complete the floor cleaning work in a room, reducing the manual labor intensity and providing convenience for modern life. Different from a sweeping robot, the cleaning robot works in a water environment for a long time, and it mainly relies on a blower to suck away the dirt and store it in a collection box. However, the dirt that enters the collection box is easily further attracted by the wind and enters the blower through the air extraction port, thereby damaging the blower.

[0003] The above information disclosed in the background art section is only used to enhance the understanding of the background of this application, so it may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Invention

[0004] An object of this application is to provide a collection box that can prevent dirt from entering the air extraction port.

[0005] To solve the above technical problems, this application adopts the following technical solutions:

[0006] According to one aspect of this application, this application provides a dirt collection box, including:

[0007] A box body, an air extraction port and an air suction port are formed in the box body, the air extraction port is communicated with an external blower, the external blower sucks the air in the box body through the air extraction port to generate a negative pressure at the air suction port, and external dirt is sucked into the box body from the air suction port under the action of the negative pressure;

[0008] A stop portion, which is arranged in the box body and located on the flow path from the air suction port to the air extraction port to stop the dirt entering from the air suction port from moving towards the air extraction port.

[0009] According to an embodiment of this application, the dirt collection box includes a cover plate, the cover plate is horizontally installed in the box body and located above the air extraction port and the air suction port;

[0010] The stop portion includes a first stop portion, the first stop portion is arranged on the bottom surface of the cover plate and extends in a direction away from the cover plate to block the dirt entering from the air suction port from moving towards the air extraction port.

[0011] According to an embodiment of this application, the first stop portion includes a first rib, the first rib is sheet-shaped, and the height of the bottom edge of the rib is equivalent to the height of the air suction port.

[0012] According to an embodiment of the present application, the dirt collection box further has a lid, and the lid is covered on the box body to form a closed storage space with the box body, and the cover plate is located in the storage space;

[0013] A second stop portion is convexly provided on the bottom surface of the lid and is disposed near the edge of the cover plate to block the dirt entering from the suction port from flowing above the cover plate.

[0014] According to an embodiment of the present application, the second stop portion includes a second rib, the second rib is in a plate shape, and the second rib extends downward from the bottom surface of the lid; the horizontal distance L between the surface of the second rib and the edge of the cover plate is greater than or equal to 0.5 mm and less than or equal to 5 mm.

[0015] According to an embodiment of the present application, there is a gap between the lid and the cover plate; a third stop portion is further provided on the bottom surface of the lid, and the third stop portion is located in the gap to block the dirt entering the gap.

[0016] According to an embodiment of the present application, the third stop portion includes a third rib, the third rib is in a plate shape and extends from top to bottom, and both ends of the third rib extend out of the edge of the cover plate to guide the dirt to fall to the bottom of the box body.

[0017] According to an embodiment of the present application, a fourth stop portion is further provided on the top surface of the cover plate, the fourth stop portion is also located in the gap, and the fourth stop portion is located on the side of the third stop portion facing the air suction port to block the dirt falling from the third stop portion onto the cover plate from moving in the direction of the air suction port.

[0018] According to an embodiment of the present application, the fourth stop portion includes a fourth rib, the fourth rib is in a plate shape, and the fourth rib is convexly provided on the top surface of the cover plate.

[0019] According to an embodiment of the present application, a convex platform is provided in the dirt collection box, and the convex platform protrudes from the bottom wall of the box body;

[0020] The cover plate has a sealed position and an unsealed position, and one end of the cover plate is rotatably connected to the convex platform, so as to rotate relative to the convex platform to move to the sealed position to synchronously seal the suction port and the air suction port; and rotate relative to the convex platform to move to the unsealed position to synchronously unseal the suction port and the air suction port.

[0021] According to an embodiment of the present application, the dirt collection box further includes a driving assembly, and the driving assembly is installed on the box body to drive the cover plate to move from the sealed position to the unsealed position.

[0022] The present application also provides a cleaning robot, which is characterized by comprising the dirt collection box, the cleaning roller and the blower;

[0023] The blower is installed corresponding to the air extraction port of the dirt collection box, and the cleaning roller is installed below the dirt collection box and close to the suction port.

[0024] During the operation of the dirt collection box in this embodiment, after the dirt enters the box body from the suction port, it will further move towards the air extraction port under the action of negative pressure. In this embodiment, a stop portion is arranged in the box body, and the stop portion is located on the path from the suction port to the air extraction port, so as to stop the dirt entering from the suction port from moving towards the air extraction port, effectively reducing the risk of the air extraction port being blocked and damaged by dirt. Therefore, this embodiment effectively blocks the dirt from blocking the air extraction port, ensuring the safety and stability of the cleaning robot during operation.

[0025] It should be understood that the above general description and the following detailed description are only exemplary and do not limit the present application. Description of the Drawings

[0026] By referring to the accompanying drawings and describing its exemplary embodiments in detail, the above and other objectives, features and advantages of the present application will become more apparent.

[0027] Figure 1 It is a schematic structural diagram of a dirt collection box shown according to an embodiment.

[0028] Figure 2 It is Figure 1 a cross-sectional view of the dirt collection box when the box cover is in the closed state.

[0029] Figure 3 It is Figure 1 a side view of the dirt collection box when the box cover is in the closed state.

[0030] Figure 4 It is a schematic structural diagram of a cover plate shown according to an embodiment.

[0031] Figure 5 It is Figure 4 a schematic structural diagram from another perspective.

[0032] Figure 6 It is a schematic structural diagram of a box cover shown according to an embodiment.

[0033] Description of the reference numerals is as follows: 100, dirt collection box

[0034] 1, box body; 11, air extraction port; 12, suction port; 13, boss;

[0035] 2. Cover plate; 21. First stop portion; 22. Fourth stop portion;

[0036] 3. Box cover; 31. Second stop portion; 32. Third stop portion. Detailed implementation manners

[0037] Although the present application can be easily embodied in different forms of embodiments, only some specific embodiments are shown in the drawings and will be described in detail in this specification. At the same time, it can be understood that this specification should be regarded as a demonstration of the principle of the present application, rather than aiming to limit the present application to what is described herein.

[0038] Therefore, a feature pointed out in this specification will be used to illustrate one of the features of one embodiment of the present application, rather than implying that each embodiment of the present application must have the described feature. In addition, it should be noted that this specification describes many features. Although some features can be combined together to show a possible system design, these features can also be used in other combinations not explicitly described. Therefore, unless otherwise stated, the described combination is not intended to be limiting.

[0039] In the embodiments shown in the drawings, the indication of directions (such as up, down, left, right, front and back) is used to explain that the structures and movements of various elements of the present application are not absolute but relative. When these elements are in the positions shown in the drawings, these explanations are appropriate. If the description of the positions of these elements changes, then the indication of these directions also changes accordingly.

[0040] Now, the exemplary embodiments will be described more fully with reference to the drawings. However, the exemplary embodiments can be implemented in various forms and should not be construed as limited to the examples set forth herein; rather, these exemplary embodiments are provided so that the description of the present application will be more comprehensive and complete, and the concept of the exemplary embodiments will be fully conveyed to those skilled in the art. The drawings are only schematic illustrations of the present application and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repeated description will be omitted.

[0041] The following will further elaborate on the preferred embodiments of the present application in conjunction with the drawings of this specification.

[0042] The present application discloses a cleaning robot and a dirt collection box 100 disposed therein. The cleaning robot includes a robot main body, a dirt collection box, a blower, a cleaning roller, a roller power assembly, a liquid storage tank, a liquid supply mechanism, and a drive wheel assembly. The robot main body is used to carry and install the above-mentioned various structures. The dirt collection box is used to collect dirt, and has an air extraction port and a suction port. The air extraction port is communicated with the blower, and the blower sucks the air in the dirt collection box through the air extraction port. The cleaning roller is disposed below the dirt collection box, and the roller power assembly is used to drive the cleaning roller to rotate, so that the cleaning roller cleans the ground, and the dirt on the ground is sucked into the interior of the dirt collection box through the suction port of the dirt collection box under the action of negative pressure. The liquid storage tank is used to store cleaning liquid, and the cleaning liquid is applied to the above-mentioned cleaning roller through the liquid supply mechanism to wet the cleaning roller, so as to facilitate the cleaning roller to perform floor washing operation on the ground. The drive wheel assembly is installed at the bottom of the robot main body and is used to drive the cleaning robot to move forward, backward or turn. It is worth mentioning that the "dirt" mentioned in this embodiment includes but is not limited to sewage, debris, dust, dirt and hair generated during the cleaning process of the floor washing robot.

[0043] In the following embodiments, specific embodiments of the dirt collection box 100 will be described.

[0044] Please refer to Figure 1 , Figure 1 FIG. is a schematic structural diagram of a dirt collection box 100 shown according to an embodiment. In one embodiment, the dirt collection box 100 includes a box body 1 and a stop portion. An air extraction port 11 and a suction port 12 are formed in the box body 1. The air extraction port 11 is communicated with an external blower, and the external blower sucks the air in the box body 1 through the air extraction port 11 to generate negative pressure at the suction port 12. External dirt is sucked into the box body 1 from the suction port 12 under the action of negative pressure; the stop portion is disposed in the box body 1 and is located on the path from the suction port 12 to the air extraction port 11 to stop the dirt entering from the suction port 12 from flowing towards the air extraction port 11, thereby preventing the dirt from flowing to the blower and causing damage to it.

[0045] In this embodiment, the interior of the box body 1 is used to accommodate dirt, usually sewage mixed with water and solid dirt. The air extraction port 11 and the suction port 12 are higher than the bottom wall of the box body 1. Schematically, an air extraction channel extends upward from the bottom wall of the box body 1, and the top opening of the air extraction channel is the air extraction port 11, and the bottom is communicated with the blower. An inhalation channel extends upward from the bottom of the box body 1, and the top of the inhalation channel is the suction port 12, and the bottom is connected to the cleaning roller.

[0046] Specifically, an air extraction part and an inhalation part are formed inside the box body 1. The air extraction part is fixed to the bottom wall of the box body 1. One end of the air extraction channel penetrates through the end of the air extraction part away from the bottom wall and forms the above-mentioned air extraction port 11, and the other end penetrates through the bottom wall and forms an opening communicating with the fan. The inhalation part is also fixed to the bottom wall of the box body. One end of the inhalation channel penetrates through the end of the inhalation part away from the bottom wall and forms an inhalation port 12, and the other end penetrates through the bottom wall and forms an opening corresponding to the cleaning roller.

[0047] The cross-sectional profile of the inhalation channel gradually contracts; then the part of the inhalation channel close to the bottom wall of the box body 1 will be set at an obtuse angle, which can make the air flow more smoothly enter the inhalation channel from the outside of the box body 1 to a certain extent, reduce the air volume loss caused by excessive air flow turning (i.e., too large an angle), and improve the utilization rate of wind energy.

[0048] When the cleaning roller of the cleaning robot works, the cleaning roller rotates, and at the same time, it can lift up dirt such as sewage and debris. At this time, the fan extracts air, and the gas in the box body 1 is discharged through the air extraction port 11, and then a negative pressure is formed at the inhalation port 12, and dirt such as sewage and debris can easily be sucked into the inside of the box body 1 through the inhalation port 12.

[0049] After the dirt enters the box body 1, some dirt will fall to the bottom of the box body 1, but some dirt moves towards the air extraction port 11 under the action of negative pressure. Therefore, in this application, a stop part is arranged on the path from the inhalation port 12 to the air extraction port 11 to stop the dirt from moving towards the air extraction port 11, thereby preventing the dirt from flowing to the fan and causing damage to it.

[0050] The setting method of the stop part can be various. For example, the stop part can be arranged on the bottom of the box body 1 and extend upward; it can also be arranged on the side of the box body 1 and extend horizontally between the inhalation port 12 and the air extraction port 11. The specific structure of the stop part can also be various. For example, it can be a mesh structure to block hair and large particle dirt. It can also be a sponge to absorb sewage.

[0051] During the working process of the dirt collection box 100 of this embodiment, after the dirt enters the box body 1 from the inhalation port 12, it will further move towards the air extraction port 11 under the action of negative pressure. In this embodiment, a stop part is arranged in the box body 1 and the stop part is located on the path from the inhalation port 12 to the air extraction port 11, so as to stop the dirt entering from the inhalation port 12 from moving towards the air extraction port 11, effectively reducing the risk of the air extraction port 11 being blocked and damaged by dirt. Therefore, this embodiment effectively blocks the dirt from blocking the air extraction port 11, ensuring the safety and stability of the cleaning robot during operation.

[0052] Please refer to Figures 2 to 5 , Figure 2 is Figure 1Cross-sectional view of the dirt collection box 100 when the box cover 3 is in the closed state. Figure 3 is Figure 1 Side view of the dirt collection box 100 when the box cover 3 is in the closed state. Figure 4 Schematic structural diagram of a cover plate 2 shown according to an embodiment. Figure 5 is Figure 4 Schematic structural diagram of another perspective. In an embodiment, the dirt collection box 100 includes a cover plate 2, the cover plate 2 is horizontally installed in the box body 1 and is located above the air extraction port 11 and the suction port 12; the stop portion includes a first stop portion 21, the first stop portion 21 is provided on the bottom surface of the cover plate 2 and extends in a direction away from the cover plate to block the dirt entering from the suction port 12 from moving towards the air extraction port 11.

[0053] In an embodiment, the cover plate 2 is integrally in a flat plate-like structure and is received in the box body 1. The cover plate 2 has two stable position states, namely the sealed position and the unsealed position. The cover plate 2 can move between the sealed position and the unsealed position. Among them, when the cover plate 2 is in the sealed position, it seals the air extraction port 11 and the suction port 12; when the cover plate 2 is in the unsealed position, it unseals the air extraction port 11 and the suction port 12.

[0054] Specifically, in the sealed position, the cover plate 2 integrally covers and seals the air extraction port 11 and the suction port 12. At this time, the sewage in the box body 1 will not overflow outside the box body 1 through the air extraction air channel and the suction channel, thereby avoiding safety accidents caused by sewage overflow. In the unsealed position, the cover plate 1 unseals the air extraction port 11 and the suction port 12, and the fan can extract air from the box body 1 to make the suction port 12 in a negative pressure state, facilitating the suction of dirt on the ground and the cleaning roller.

[0055] In an embodiment, the cover plate 2 is rotatably connected to the box body 1, that is, the cover plate 2 can rotate between the sealed position and the unsealed position. Specifically, the bottom wall and side wall of the box body 1 are recessed inward to form a boss 13, one end of the cover plate is rotatably connected to the upper surface of the boss 13, and the other end can pivot around this end to seal or unseal the air extraction port 11 and the suction port 12. It can be understood that in other embodiments of the present application, the cover plate 2 can also be designed to rotate in other directions. Preferably, the above air extraction port 11 and the suction port 12 are flush. In this way, when the cover plate 2 is in the sealed position, one end of it bears on the boss 13, and the other end bears on the air extraction port 11 and the suction port 12.

[0056] In one embodiment, the dirt collection box is further provided with a driving component, which is installed on the box body for driving the cover plate to move from the sealed position to the unsealed position. The driving component can be a motor driving component or a cylinder driving component, which is not limited herein. By using the driving component, the cover plate 2 can be automatically driven to adjust its position state, thus facilitating the user's use and enabling precise control of the rotation angle and rotation position of the cover plate 2, thereby ensuring the reliability of sealing and unsealing the air extraction port 11 and the air suction port 12.

[0057] Furthermore, to enhance the sealing effect of the cover plate 2 on the air extraction port 11 and the air suction port 12, an elastic sealing member (not shown in the figure), such as a rubber sheet or a sealing ring, is fixedly provided at one end of the cover plate 2 facing the air extraction port 11 and the air suction port 12 to seal the connection between the cover plate 2 and the air extraction port 11 and the air suction port 12 respectively. It can be understood that in other embodiments of the present invention, the cover plate 2 can also be connected to the box body 210 in other ways, such as a sliding connection, as long as it can reciprocate between the sealed position and the unsealed position to seal or unseal the suction channel and the air extraction channel, rather than being limited to the rotational connection in this embodiment.

[0058] Schematically, an installation frame is convexly provided in the box body 1, and the cover plate 2 is pivotally connected to the installation frame. By rotating the cover plate 2, the air suction port 12 and the air extraction port 11 can be opened or covered.

[0059] The height of the cover plate 2 is set higher than the heights of the air extraction port 11 and the air suction port 12, so as to form a ventilation gap between the cover plate 2 and the air extraction port 11, enabling the gas to be sucked out normally and smoothly, and ensuring the normal formation of negative pressure in the box body 1. There is also a gap between the cover plate 2 and the air suction port 12. After the dirt is ejected upward from the air suction port 12, it continues to move upward and is blocked by the cover plate 2, and then disperses and falls back into the box body 1. Therefore, the cover plate 2 of the present application can promote the dirt to smoothly fall to the bottom of the box body 1 after entering the box body 1 from the air suction port 12, thereby reducing the amount of dirt flowing toward the air extraction port 11.

[0060] For example Figure 5 , in this embodiment, the first stop portion 21 is provided on the cover plate 2 and extends downward from top to bottom, without occupying the space at the bottom of the box. When the dirt is sucked in through the air suction port 12 and blocked by the cover plate 2, part of the dirt moves toward the air extraction port 11; at this time, the first stop portion 21 blocks the dirt to prevent it from directly entering the air suction port; and when the sewage passes through the first stop portion 21, the solid matter in the sewage will accumulate at the rib, thus aggregating into a large particle solid-liquid mixture, and finally falling into the box body 1 under the action of gravity.

[0061] The first stopper 21 may include a screen, a material with adsorption capacity, etc. In one embodiment, the first stopper 21 includes a first rib, which is in the form of a sheet. The sheet-shaped rib has a large surface area and can block and adhere to dirt. The rib extends from top to bottom. If the rib is too long, it will affect the negative pressure at the suction port 12; if the rib is too short, it will not be able to effectively block dirt. Therefore, in this embodiment, the bottom edge height of the rib is set to be equivalent to the height of the suction port 12, so that it can effectively block dirt while reducing the impact on the airflow circulation in the box 1, ensuring that there is sufficient negative pressure at the suction port 12.

[0062] The first retaining rib can be formed integrally with the cover plate 2, or can be fixedly connected by a fixing member. The provision of the first retaining rib can increase the overall strength of the cover plate 2.

[0063] After the dirt is ejected upward from the suction port 12, some of the dirt will move toward the side away from the air extraction port 11, which may easily cause the risk of blocking the air extraction port 11. Figure 6 , Figure 6 1 is a schematic diagram of the structure of a box cover 3 according to an embodiment.

[0064] In one embodiment, the waste storage box 100 is provided with a box cover 3, which is covered on the box body 1 to form a closed storage space between the box body 1 and the box cover 3, and the cover plate 2 is located in the storage space; a second stopper 31 is convexly provided on the bottom surface of the box cover 3, and the second stopper 31 is located on the side of the suction port 12 away from the exhaust port 11 and close to the edge of the cover plate 2 to prevent the waste entering from the suction port 12 from flowing to the top of the cover plate 2.

[0065] In this embodiment, the second stopper 31 is disposed on the side of the suction port 12 away from the air extraction port 11, thereby blocking the dirt moving in the opposite direction and preventing the dirt from climbing over the cover plate 2. The smaller the distance between the second stopper 31 and the cover plate 2, the better, so as to reduce the amount of dirt that penetrates from the second stopper 31 and the edge of the cover plate 2.

[0066] The second stopper 31 may include a screen, a material with adsorption capacity, etc. In a specific embodiment, the second stopper 31 includes a second stopper rib, which is plate-shaped and extends downward from the bottom surface of the box cover 3; the horizontal spacing L between the surface of the second stopper rib and the edge of the cover plate 2 is greater than or equal to 0.5 mm and less than or equal to 5 mm.

[0067] The second retaining rib can be formed integrally with the box cover 3, or can be fixedly connected by a fixing member. The second retaining rib can increase the overall strength of the box cover 3.

[0068] In actual use, some dirt will still pass through the gap between the second stopper 31 and the edge of the cover plate 2, and then go over the cover plate 2 and move along the lower surface of the box cover 3 toward the air outlet 11. Figures 2 to 4 In one embodiment, a third stopper 32 is further provided on the bottom surface of the box cover 3. The third stopper 32 is located in the gap to prevent dirt from entering the gap.

[0069] Most of the dirt will condense on the lower surface of the storage cover and move further toward the air outlet 11 along the lower surface of the storage cover under the action of negative pressure. During the movement, the dirt will be stopped by the third stop portion 32, and will gather on the third stop portion 32 or slide along the third stop portion 32, and finally move along the third stop portion 32 and fall into the box body 1.

[0070] The third stopper 32 may include a screen, a material with adsorption capacity, etc. In a specific embodiment, the third stopper 32 includes a third rib, which is plate-shaped and extends from top to bottom, and both ends of the third rib extend out of the edge of the cover plate 2 to guide the dirt to fall into the box body 1. The plate-shaped third stopper 32 has a large surface area, which can better stop the movement of dirt and can adhere to the dirt. The sewage gathers on the surface of the third stopper 32 to form a large liquid drop, which slides along the surface of the third stopper 32 and finally drips into the box body 1.

[0071] The third retaining rib can be formed integrally with the box cover 3, or can be fixedly connected by a fixing member. The provision of the third retaining rib can increase the overall strength of the box cover 3.

[0072] Furthermore, the solid dirt or sewage stopped by the third stopper 32 will fall onto the upper side of the cover plate 2 and then move from the gap between the third stopper 32 and the cover plate 2 to the air outlet 11, increasing the risk of dirt blocking the air filter. Figure 3 and Figure 4 In one embodiment, a fourth stopper 22 is further provided on the top surface of the cover plate 2, and the fourth stopper 22 is also located in the gap, and the fourth stopper 22 is located on the side of the third stopper 32 toward the air outlet 11 to prevent the dirt that falls from the third stopper 32 onto the cover plate 2 from moving toward the air outlet 11.

[0073] In this embodiment, the sewage sliding along the third stop portion 32 drops onto the cover plate 2, and in the process of moving toward the air suction port 11 under the action of negative pressure, it will be blocked by the fourth stop portion 22, so that the sewage condenses at the fourth stop portion 22 to form a liquid flow, and slides along the fourth stop portion 22 into the box body 1, thereby preventing the sewage from entering the air suction port 11.

[0074] The fourth stop portion 22 may include a net, a material with adsorption ability, etc. In one embodiment, the fourth stop portion 22 includes a fourth stop rib, the fourth stop rib may be plate-shaped, and the fourth stop rib protrudes from the top surface of the cover plate 2. The height of the fourth stop rib should be set in combination with the height of the gap between the cover plate 2 and the box cover 3.

[0075] The fourth stop rib may be integrally formed with the cover plate 2 or may be fixedly connected through a fixing member. The setting of the fourth stop rib can increase the overall strength of the cover plate 2.

[0076] This application also provides a cleaning robot, which has a dirt collection box. The specific structure and beneficial effects of the dirt collection box are the same as those of the dirt collection box in the above embodiments, and will not be described herein again.

[0077] Although this application has been described with reference to several exemplary embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since this application can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be broadly construed within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A dirt collection box, characterized in that, it includes: A box body, an air extraction port and an air suction port are formed in the box body. The air extraction port is communicated with an external fan. The external fan sucks the air in the box body through the air extraction port to generate negative pressure at the air suction port. External dirt is sucked into the box body from the air suction port under the action of the negative pressure; A stop portion is arranged in the box body and is located on the flow path from the air suction port to the air extraction port to stop the dirt entering from the air suction port from moving towards the air extraction port; A cover plate is horizontally installed in the box body and is located above the air extraction port and the air suction port; the stop portion includes a first stop portion, and the first stop portion is arranged on the bottom surface of the cover plate and extends in a direction away from the cover plate to block the dirt entering from the air suction port from moving towards the air extraction port; A box cover covers the box body to form a closed storage space with the box body, and the cover plate is located in the storage space; a second stop portion protrudes from the bottom surface of the box cover and is arranged close to the edge of the cover plate to block the dirt entering from the air suction port from flowing above the cover plate.

2. The dirt collection box according to claim 1, characterized in that, the first stop portion includes a first rib, the first rib is sheet-shaped, and the height of the bottom edge of the first rib is equivalent to the height of the air suction port.

3. The dirt collection box according to claim 1, characterized in that, the second stop portion includes a second rib, the second rib is plate-shaped, and the second rib extends downward from the bottom surface of the box cover; the horizontal distance L between the surface of the second rib and the edge of the cover plate is greater than or equal to 0.5 mm and less than or equal to 5 mm.

4. The dirt collection box according to claim 1, characterized in that, there is a gap between the box cover and the cover plate; a third stop portion is further arranged on the bottom surface of the box cover, and the third stop portion is located in the gap to block the dirt entering the gap.

5. The dirt collection box according to claim 4, characterized in that, the third stop portion includes a third rib, the third rib is plate-shaped and extends from top to bottom, and both ends of the third rib extend out of the edge of the cover plate to guide the dirt to fall to the bottom of the box body.

6. The dirt collection box according to claim 4, characterized in that, a fourth stop portion is further arranged on the top surface of the cover plate, the fourth stop portion is also located in the gap, and the fourth stop portion is located on the side of the third stop portion facing the air extraction port to block the dirt falling from the third stop portion onto the cover plate from moving towards the air extraction port.

7. The dirt collection box according to claim 6, characterized in that, the fourth stop portion includes a fourth rib, the fourth rib is plate-shaped, and the fourth rib protrudes from the top surface of the cover plate.

8. The dirt collection box according to claim 1, characterized in that, a convex platform is arranged in the dirt collection box, and the convex platform protrudes from the bottom wall of the box body; The cover plate has a sealing position and an unsealing position. One end of the cover plate is rotatably connected to the boss, and can move to the sealing position by rotating relative to the boss to synchronously seal the suction port and the air extraction port. And it can move to the unsealing position by rotating relative to the boss to synchronously unseal the suction port and the air extraction port.

9. The dirt collection box according to claim 8, characterized in that the dirt collection box further includes a driving assembly, and the driving assembly is installed in the box body for driving the cover plate to move from the sealing position to the unsealing position.

10. A cleaning robot, characterized in that it includes the dirt collection box, a cleaning roller and a blower according to any one of claims 1 to 9; the blower is installed corresponding to the air extraction port of the dirt collection box, and the cleaning roller is installed below the dirt collection box and is arranged close to the suction port.

Images