CN115844262A - Sweeper and sweeping system - Google Patents

Abstract

The invention relates to a sweeper and a sweeping system. The sweeper comprises a main body, a dust box and a dust exhaust duct pipe. The dust box and the dust exhaust duct pipe are arranged in the main body, the dust box is structurally provided with a garbage inlet and two dust exhaust ports arranged at intervals, and the two dust exhaust ports are communicated to the outside of the main body through the dust exhaust duct pipe. The dust box of the sweeper is provided with two dust discharge ports which are mutually spaced. When the sweeper is matched with the dust collecting base station, the dust collecting base station can be communicated with the interior of the dust box through the dust exhaust air duct pipe and the dust exhaust port, an air flow is formed by generating suction force in the dust box, and garbage in the dust box enters the dust exhaust air duct pipe through the dust exhaust port under the action of the air flow and is finally discharged. Two spaced dust exhaust openings can guide two air flows at two positions of the dust box respectively, the coverage area of the air flows is widened, dead angles of the air flows are reduced, the probability of forming vortexes in the dust box is effectively reduced, the garbage is prevented from being accumulated under the action of the vortexes, the disturbance of the air flows inside the dust box is increased, and the garbage can be prevented from being accumulated.

Description

Sweeper and sweeping system

Technical Field

The invention relates to the technical field of cleaning equipment, in particular to a sweeper and a sweeping system.

Background

With the development of technology and the improvement of living quality requirements of people, the sweeper is widely applied to realize automatic sweeping. The sweeper can send ground garbage into a garbage inlet of the dust box through the rolling brush in the sweeping process, meanwhile, the fan works to generate suction force, air in the dust box is sucked away through the air channel and the dust box filter screen, and garbage in the cavity of the rolling brush is sucked and left in the dust box. The user needs to clean or replace the dust box at least after the dust box is full, and the cleaning or replacement frequency of the user is high due to the limited space in the dust box, and is particularly obvious in the case of more garbage.

Therefore, on the basis of the original sweeper, a base station is additionally arranged on part of products for the sweeper, and the base station further recycles the garbage collected in the dust box into the dust bag in the base station by generating suction inside the dust box. However, when the base station sucks air into the dust box, the garbage is accumulated at the corners of the dust box and cannot be smoothly removed.

Disclosure of Invention

Accordingly, there is a need to provide a sweeper and a sweeping system capable of avoiding the situation that the dust box is not cleaned sufficiently due to the accumulation of the garbage.

A sweeper, comprising:

a main body;

the dust box and the dust exhaust air duct pipe are arranged in the main body, two dust exhaust ports which are arranged at intervals are formed in the dust box, and the two dust exhaust ports are communicated to the outside of the main body through the dust exhaust air duct pipe.

The dust box of the sweeper is provided with two dust discharge ports which are mutually spaced. When the sweeper is matched with the dust collecting base station, the dust collecting base station can be communicated with the interior of the dust box through the dust exhaust air duct pipe and the dust exhaust port, an air flow is formed by generating suction force in the dust box, and garbage in the dust box enters the dust exhaust air duct pipe through the dust exhaust port under the action of the air flow and is finally discharged out of the sweeper. Two spaced dust exhaust openings can respectively guide two air flows at two positions of the dust box, so that the coverage area of the air flows is widened, dead angles of the air flows are reduced, the probability of forming a vortex in the dust box is effectively reduced, and then the garbage is prevented from accumulating under the action of the vortex. In addition, the two air flows also increase the disturbance of the air flow in the dust box, increase the sweeping effect of the air flow and also avoid the accumulation of garbage.

In one embodiment, the dust box comprises a first side wall, a second side wall, a third side wall and a fourth side wall which are sequentially enclosed, wherein the first side wall is arranged opposite to the third side wall, and the second side wall is arranged opposite to the fourth side wall;

the dust box further comprises two dust exhaust side walls, the two dust exhaust side walls are respectively connected between the second side wall and the third side wall and between the fourth side wall and the third side wall, and the two dust exhaust ports are respectively formed in the two dust exhaust side walls.

In one embodiment, the included angle between the second side wall, the third side wall and the fourth side wall to which the two dust exhaust side walls are connected is greater than 90 °.

In one embodiment, the number of the dust exhaust duct pipes is two, and the two dust exhaust ports are respectively communicated with the outside of the main body through the two dust exhaust duct pipes.

In one embodiment, the dust exhaust duct is configured to form two air inlet branch ducts and one air outlet branch duct, one end of each of the two air inlet branch ducts is communicated with the two dust exhaust ports, and the other end of each of the two air inlet branch ducts is communicated with each other and communicated with the outside of the main body through the air outlet branch duct.

In one embodiment, the sweeper further comprises a blocking cover which can be opened and closed, and the blocking covers are arranged on the two dust exhaust ports.

In one embodiment, a blocking cover is arranged at one end of the dust exhaust duct communicated with the outside of the main body.

In one embodiment, the blocking cover comprises a cover plate and a torsion spring, the torsion spring is configured to provide a pre-tightening force for driving the cover plate to close, and when the pressure difference between two sides of the cover plate is greater than the pre-tightening force of the torsion spring, the cover plate is opened.

In one embodiment, the blocking cover further includes a mounting frame and a rotating shaft, a rotating shaft fixing groove for mounting the rotating shaft is configured on the mounting frame, the cover plate is rotatably connected with the mounting frame through the rotating shaft, and the rotating shaft is sleeved with the torsion spring.

In one embodiment, the shield cover further comprises a sealing member, and the sealing member is sealed at the installation connection position of the installation frame.

In one embodiment, the dust box comprises a box body, a cover body and a filtering piece, the dust exhaust port is formed in the box body, the cover body is covered on the box body and forms an air outlet communicated with the outside of the dust box, and the filtering piece is installed in the cover body.

A sweeping system comprises a dust collecting base station and the sweeper.

Drawings

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

Fig. 1 is a top view of a sweeper with a housing of a main body removed according to a first embodiment of the present invention;

fig. 2 is a schematic structural view of the sweeper shown in fig. 1, in which a dust box, a dust exhaust duct pipe, a fan and an air outlet pipe are separated;

FIG. 3 is a front view of the dirt tray shown in FIG. 2;

FIG. 4 is a top view of the dirt box shown in FIG. 2;

FIG. 5 is a top view of the sweeper with a portion of the main body removed from the housing in accordance with the second embodiment of the present invention;

FIG. 6 is a front view of the dirt tray shown in FIG. 2 with the retaining cover assembled;

FIG. 7 is a schematic view of the structure of the shield shown in FIG. 6;

FIG. 8 is a schematic view of the cover of FIG. 7 in an exploded configuration;

fig. 9 is a schematic sectional view of the dust exhaust duct pipe fitting flap shown in fig. 1.

Description of reference numerals: 100. a sweeper; 10. a main body; 11. a housing; 13. a fan; 15. an air outlet pipe; 30. a dust box; 31. a box body; 311. a first side wall; 312. a second side wall; 313. a third side wall; 314. a fourth side wall; 315. a dust exhaust side wall; 33. a cover body; 35. a filter member; 50. a dust exhaust duct pipe; 51. an intake branch pipe; 53. an air outlet branch pipe; 70. a blocking cover; 71. a cover plate; 73. a torsion spring; 75. installing a frame; 77. a rotating shaft; 79. a seal member; p, a dust exhaust port; C. an air outlet; z, pivot fixed slot.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanying figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will recognize without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1, an embodiment of the invention provides a floor sweeping system, which includes a dust collecting base station (not shown) and a floor sweeper 100.

The dust collecting base station has an interface matched with the sweeper 100, and the sweeper 100 is matched with the dust collecting base station after working for a period of time or sweeping enough garbage, so that the dust collecting base station forms negative dust suction pressure on the dust box 30 to suck the garbage in the dust box. The dust collecting base station can be internally provided with a dust bag which is used for containing the recycled garbage and cleaning the dust collecting base station in a mode of cleaning or replacing the dust bag. In addition, the dust collecting base station may also have a function of charging the sweeper 100.

Referring to fig. 2 to 3, the present invention further provides a sweeper 100, which includes a main body 10, a dust box 30, and a dust exhaust duct 50. The dust box 30 and the dust exhaust duct 50 are installed in the main body 10, the dust box 30 is configured to have a garbage inlet (not shown) and two dust exhaust ports P spaced apart from each other, and both the dust exhaust ports P are communicated to the outside of the main body 10 through the dust exhaust duct 50.

It is understood that the main body 10 may include a housing 11, a rolling brush, a blower 13, a roller, a main board, etc. for normal functions, which will not be described herein. The dust box 30 and the dust exhaust duct 50 are specifically located in the housing 11 of the main body 10. The dust box 30 further has a garbage inlet, when the sweeper 100 works, the garbage on the ground is swept by the rolling brush, negative pressure is formed in the dust box 30 by the fan 13, and then the garbage is sucked into the dust box 30 through the garbage inlet to be collected. When the sweeper 100 is operated for a period of time or the dust box 30 is full of garbage, the sweeper 100 can be matched with a dust collecting base station, under the action of the dust collecting base station, an air flow which flows in through a garbage inlet and flows out through the dust exhaust port P is formed in the dust box 30, the garbage is transferred to the dust collecting base station from the dust box 30 along with the air flow, and after the dust box 30 is cleaned, the sweeper 100 can perform next sweeping operation.

In the sweeper 100, the dust box 30 has two dust outlets P spaced from each other. When the sweeper 100 is matched with a dust collection base station, the dust collection base station can be communicated with the interior of the dust box 30 through the dust exhaust air duct pipe 50 and the dust exhaust port P, an air flow is formed by generating suction force in the dust box 30, and garbage in the dust box 30 enters the dust exhaust air duct pipe 50 through the dust exhaust port P under the action of the air flow and is finally discharged out of the sweeper 100. Two separated dust exhaust ports P can respectively guide two air flows at two positions of the dust box 30, so that the coverage area of the air flows is widened, dead angles of the air flows are reduced, the probability of forming a vortex in the dust box 30 is effectively reduced, and then the garbage is prevented from accumulating under the action of the vortex. In addition, the two air flows also increase the disturbance of the air flow inside the dust box 30, increase the cleaning effect of the air flow and also avoid the accumulation of garbage.

Referring to fig. 4, the dust box 30 further includes a first sidewall 311, a second sidewall 312, a third sidewall 313 and a fourth sidewall 314 sequentially enclosed, wherein the first sidewall 311 is opposite to the third sidewall 313

The second sidewall 312 is disposed opposite the fourth sidewall 314. The dust box 30 further includes two dust discharging sidewalls 315, the two dust discharging sidewalls 315 are respectively connected between the second sidewall 312 and the third sidewall 313 and between the fourth sidewall 314 and the third sidewall 313, and the two dust discharging ports P are respectively formed on the two dust discharging sidewalls 315.

The dust box 30, as a mechanism having a housing function, should have corresponding structural members such as a top plate and a bottom plate at its top and bottom 0 in addition to the side walls on the peripheral sides to ensure its integrity. Wherein, the first

A side wall 311 and a third side wall 313 are substantially perpendicular to the second side wall 312 and the fourth side wall 314, and the entire dust box 30 is substantially rectangular regardless of the portion of the dust exhaust side wall 315, which facilitates to improve the compactness of each component inside the sweeper 100. Based on this, it can be understood that the garbage inlet should be opened at or near the first side wall 311 to form a smooth airflow with two dust discharge ports P at the same time.

The corners of the dust box 30 are most prone to eddy currents, eventually leading to trash accumulation. The dust discharging sidewall 315 formed with the dust discharging port P is located at two corners of the dust box 30 in structural view, so that the two corners can be directly prevented from generating eddy currents, and any single end of the dust box 30 is not too far away from the dust discharging port P, so that the generation of the eddy currents at the corners can be avoided, and sufficient suction force at each position of the dust box 30 can be ensured.

Furthermore, the included angle between the second sidewall 312 and the third sidewall 313 where the two dust discharging sidewalls 315 are connected and the fourth sidewall 314 is greater than 90 °. In other words, the included angles formed by the dust exhaust sidewall 315 and the sidewall connected thereto are all obtuse angles.

Thus, the corners of the two dust exhaust sidewalls 315 are not right angles, but have two obtuse angles, so that the possibility of forming dead corners by the obtuse angles is obviously reduced compared with the right angles or even acute angles. In addition, the airflow formed by the two dust exhaust ports P is less disturbed by a single side wall. The garbage inlet air at the first side wall 311 can be smoothly divided to flow out of the two dust discharge ports P and sweep through the inside of the dust box 30 in the process.

In addition, the position of the dust discharge port P on the dust discharge sidewall 315 is as close to the bottom as possible, so that the suction force for the garbage deposited on the bottom of the dust box 30 can be better generated.

In the first embodiment, there are two dust exhaust duct pipes 50, and two dust exhaust ports P are respectively communicated to the outside of the main body 10 through the two dust exhaust duct pipes 50.

The two dust exhaust ports P exhaust dust through the two dust exhaust duct pipes 50, respectively, and the structural forms of the two dust exhaust duct pipes 50 may be different to adapt to respective installation positions and to be guided out of the main body 10 nearby. On the one hand, the air course for dust exhaust is reduced, the efficiency of discharging the garbage from the dust box 30 is improved, and on the other hand, the occupation of the dust exhaust duct pipe 50 to the inner space of the main body 10 can be reduced.

Referring to fig. 5, in the second embodiment, the dust exhaust duct 50 is configured to form two inlet branch pipes 51 and one outlet branch pipe 53, one end of each of the two inlet branch pipes 51 is communicated with the two dust exhaust ports P, and the other end thereof is communicated with each other and communicated to the outside of the main body 10 through the outlet branch pipe 53.

The two dust exhaust ports P are generally exhausted through the same dust exhaust duct pipe 50, and the dust exhaust duct pipe 50 is respectively communicated with the two dust exhaust ports P by means of two air inlet branch pipes 51 and finally led out by the same air outlet branch pipe 53. The dust exhaust duct 50 thus remains with only one outlet on the main body 10. The consistency of the exterior of the sweeper 100 is stronger, the matching difficulty with the dust collecting base station is lower, and the dust collecting base station only needs to be correspondingly provided with a matching port.

Referring to fig. 2 and 3 again, in some embodiments, the dust box 30 includes a box 31, a cover 33 and a filter 35, the dust inlet and the dust outlet P are formed on the box 31, the cover 33 covers the box 31 and forms an air outlet C communicating with the outside of the dust box 30, and the filter 35 is installed in the cover 33. The main body 10 further includes an air outlet pipe 15, the air outlet C is connected with the fan 13 through the air outlet pipe 15, and the fan 13 is used for forming negative pressure in the dust box 30 through the air outlet C.

The box body 31 and the cover body 33 of the dust box 30 mainly assume different functions, and the two are mutually matched but do not influence each other. When the sweeper 100 is sweeping, the air flows into the dust box 30 and then passes through the cover 33

The filtered water is discharged through the air outlet C, and the garbage is retained in the box body 31 below. When the dust box 305 is cleaned by the dust collecting base station, the garbage left in the lower box body 31 is cleaned away through the dust discharge port P, and the cleaning work of the dust collecting base station is not affected because the filter member 35 is positioned in the cover body 33 in the process.

Specifically, the cover 33 is disposed on the box 31 in an embedded manner, and the air outlet C is located above one of the two dust outlets P, so that the two outlets P can work separately from each other, and the dust exhaust duct 50 and the air outlet duct 15 can be conveniently disposed together.

Referring to fig. 6 to 9, in some embodiments, the sweeper 100 further includes a blocking cover 70 that can be opened and closed, and the blocking cover 70 is disposed at each of the two dust outlets P.

The blocking cover 70 is opened when the dust box 30 is cleaned in the dust collecting base station, and is closed when the sweeper 100 performs sweeping operation, so as to be opened when needed, and keep the dust exhaust port P closed when not needed, thereby avoiding influencing the normal negative pressure formation of the dust box 30 and avoiding the leakage of swept-in garbage dust from the dust exhaust port P.

5 furthermore, a cover 70 is disposed at one end of the dust exhaust duct 50 communicating with the outside of the main body 10. The blocking cover 70 is provided here, on one hand, the blocking cover 70 can enhance the integrity of the outer surface of the main body 10, and especially, when the floor sweeping work is performed, the exposed dust exhaust duct 50 can be prevented from interfering with the outside, or impurities can be prevented from entering the dust exhaust duct 50. On the other hand, after the dust box 30 is exhausted, the dust remaining in the dust exhaust duct 50 and the dust can be prevented from spilling.

In some embodiments, the cover 70 includes a cover 71 and a torsion spring 73, the torsion spring 73 is configured to provide a pre-tightening force for closing the cover 71, and the cover 71 is opened when a pressure difference across the cover 71 is greater than the pre-tightening force of the torsion spring 73.

When the dust collecting base station generates enough negative dust suction pressure, enough pressure difference can be formed on two sides of the cover plate 71 to push the cover plate 71 to open. At this time, the dust box 30 can be cleaned. After the dust collection base station finishes dust collection on the dust box 30, the cover plate 71 loses the support of the pressure difference and automatically closes under the action of the torsion spring 73, and the sealing of the dust discharge port P and the dust discharge air duct pipe 50 is restored.

Further, the blocking cover 70 further includes a mounting frame 75 and a rotating shaft 77, a rotating shaft fixing groove Z for mounting the rotating shaft 77 is configured on the mounting frame 75, the cover plate 71 is rotatably connected with the mounting frame 75 through the rotating shaft 77, and the torsion spring 73 is sleeved on the rotating shaft 77. The mounting frame 75 is provided with a buckle, the blocking cover 70 at the dust exhaust port P is mounted on the dust exhaust wall through the mounting frame 75, and the dust exhaust duct pipe 50 is connected with the blocking cover 70 at the outer part of the main body 10 and mounted on the shell 11 of the main body 10 through the mounting frame 75, and is fixed through the buckle in a clamping manner. The torsion spring 73 has two arms connected to the mounting frame 75 and the cover 71, respectively, and thus applies a driving force to the cover 71.

The cover plate 71 at the dust exhaust port P is opened in a direction away from the dust box 30, the cover plate 71 at the outer part of the dust exhaust duct pipe 50 communicated with the main body 10 is opened in a direction away from the body housing 11, and the cover plate 71 is opened only in one direction, so as to prevent the blocking cover 70 from being opened by mistake due to the negative pressure in the dust box 30 when the sweeper 100 normally sweeps.

Further, the blocking cover 70 further includes a sealing member 79, and the sealing member 79 seals at the mounting connection of the mounting frame 75, and particularly seals at the connection of the mounting frame 75 and the dust discharging sidewall 315 and the casing 11 of the main body 10, so as to enhance the sealing performance at the mounting position of the blocking cover 70 and prevent air leakage at the blocking cover 70.

After the sweeper 100 performs sweeping operation for a period of time or the dust box 30 is full of garbage, negative pressure is generated by the dust collection base station, and under the action of the negative pressure, the dust exhaust duct 50 is opened to communicate the blocking cover 70 at the outer part of the main body 10 and the blocking cover 70 at the dust exhaust port P, so that suction is generated inside the dust box 30 through the two dust exhaust ports P. Under the effect of two dust exhaust mouth P, be formed with the air current of two dust exhaust mouth P of rubbish entry flow direction in the dirt box 30, the air current fully sweeps whole dirt box 30 inside, carries the inside rubbish of dirt box 30 and collects to the basic station by dust exhaust mouth P in the lump through dust exhaust air duct pipe 50, and clean up's dirt box 30 alright continue to follow the work of sweeping the floor of machine 100 next time.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is specific and detailed, but not to be understood as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (12)

1. A sweeper (100), characterized in that the sweeper (100) comprises:

a main body (10);

the dust box (30) and the dust exhaust duct pipe (50) are installed in the main body (10), the dust box (30) is formed with two dust exhaust ports (P) which are arranged at intervals, and the two dust exhaust ports (P) are communicated to the outside of the main body (10) through the dust exhaust duct pipe (50).

2. The sweeper (100) according to claim 1, wherein the dust box (30) comprises a first sidewall (311), a second sidewall (312), a third sidewall (313) and a fourth sidewall (314) which are sequentially enclosed, the first sidewall (311) is arranged opposite to the third sidewall (313), and the second sidewall (312) is arranged opposite to the fourth sidewall (314);

the dust box (30) further comprises two dust exhaust side walls (315), the two dust exhaust side walls (315) are respectively connected between the second side wall (312) and the third side wall (313) and between the fourth side wall (314) and the third side wall (313), and the two dust exhaust ports (P) are respectively formed in the two dust exhaust side walls (315).

3. The sweeper (100) according to claim 2, wherein the angles between the second (312), third (313) and fourth (314) side walls to which the two dust exhaust side walls (315) are connected are each greater than 90 °.

4. The sweeper (100) according to claim 1, wherein the number of the dust exhaust duct pipes (50) is two, and the two dust exhaust ports (P) are respectively communicated to the outside of the main body (10) through the two dust exhaust duct pipes (50).

5. The sweeper (100) according to claim 1, wherein the dust exhaust duct pipe (50) is configured to form two air inlet branch pipes (51) and one air outlet branch pipe (53), one end of each of the two air inlet branch pipes (51) is respectively communicated with the two dust exhaust ports (P), and the other end of each of the two air inlet branch pipes is communicated with each other and communicated to the outside of the main body (10) through the air outlet branch pipe (53).

6. The sweeper (100) according to claim 1, wherein the sweeper (100) further comprises a closable flap (70), the flap (70) being provided to both dust exhaust ports (P).

7. The sweeper (100) according to claim 6, wherein a blocking cover (70) is arranged at one end of the dust exhaust duct pipe (50) communicated with the outside of the main body (10).

8. The sweeper (100) according to any one of claims 6 or 7, wherein the shield cover (70) comprises a cover plate (71) and a torsion spring (73), the torsion spring (73) being configured to provide a pre-load force for urging the cover plate (71) to close, and the cover plate (71) is opened when a pressure difference across the cover plate (71) is greater than the pre-load force of the torsion spring (73).

9. The sweeper (100) according to claim 8, wherein the blocking cover (70) further comprises a mounting frame (75) and a rotating shaft (77), a rotating shaft fixing groove (Z) for mounting the rotating shaft (77) is formed in the mounting frame (75), the cover plate (71) is rotatably connected with the mounting frame (75) through the rotating shaft (77), and the rotating shaft (77) is sleeved with the torsion spring (73).

10. The sweeper (100) according to claim 9, wherein the shield cover (70) further comprises a seal (79), the seal (79) sealing to the mounting connection of the mounting frame (75).

11. The sweeper (100) according to claim 1, wherein the dust box (30) comprises a box body (31), a cover (33) and a filter element (35), wherein the dust discharge port (P) is formed in the box body (31), the cover (33) is arranged on the box body (31) and forms an air outlet (C) communicated with the outside of the dust box (30), and the filter element (35) is arranged in the cover (33).

12. A sweeping system, characterized in that the sweeping system comprises a dust collecting base station and a sweeper (100) according to any one of claims 1-11.

Images