Dust collection guide structure, dust collection mechanism and sweeping robot

1. A dust collection guide structure arranged at a bottom of a shell of a dust collection mechanism, comprising an air duct suction opening formed in the bottom of the shell, at least two grooves formed in a surface of the bottom of the shell and at least two sweeping brushes independently arranged at the bottom of the shell and separated from the air duct suction opening, each of the at least two grooves is communicated with the air duct suction opening to form a dust guide air duct for guiding dust into the air duct suction opening, and the at least two sweeping brushes is matched with the at least two grooves so as to facilitate guiding raised dust into the air duct suction opening through the at least two grooves; the at least two grooves formed in the surface of the bottom of the shell comprise a first groove and a second groove which are formed in two sides of the air duct suction opening respectively, and the at least two sweeping brushes arranged at the bottom of the shell comprise a first sweeping brush and a second sweeping brush which are arranged in front of the first groove and the second groove respectively; wherein the first sweeping brush is disposed parallel to the first groove and the second sweeping brush is disposed parallel to the second groove; the first groove and the second groove are integrally formed into a straight line, a splayed shape, or an inverted splayed shape.

2. The dust collection guide structure according to claim 1 , wherein one end of each of the at least two grooves is connected with the air duct suction opening and an other end of each of the at least two grooves is in smooth transition connection with an edge of the bottom of the shell.

3. The dust collection guide structure according to claim 1 , wherein each of the at least two sweeping brushes is driven to move back and forth integrally close to and away from the air duct suction opening.

4. The dust collection guide structure according to claim 1 , wherein the air duct suction opening is formed in a central axis of the bottom of the shell, and a distance between the air duct suction opening and a front end of the bottom of the shell is smaller than a distance between the air duct suction opening and a rear end of the bottom of the shell; a depth of each of the at least two grooves is gradually increased from one end away from the air duct suction opening to the other end connected with the air duct suction opening.

5. A dust collection mechanism, comprising the dust collection guide structure according to claim 1 , and further comprising a dust collection box and a draught fan which are arranged inside the shell, and the air duct suction opening, the dust collection box and the draught fan are sequentially communicated.

6. The dust collection mechanism according to claim 5 , wherein the draught fan comprises a first draught fan and a second draught fan, and the first draught fan and the second draught fan communicate with the dust collection box through an air suction guide component; the air suction guide component comprises a first air suction channel and a second air suction channel which are independent of each other, the first draught fan is communicated with the first air suction channel, and the second draught fan is communicated with the second air suction channel.

7. A sweeping robot, comprising the dust collection mechanism according to claim 5 .

8. The dust collection guide structure according to claim 1 , wherein each of the at least two sweeping brushes moves back and forth in a direction of an axis thereof.

9. The dust collection guide structure according to claim 1 , wherein an inclined guide surface is arranged at a front end of the bottom of the shell, and a front or rear edge of the air duct suction opening abuts a rear end of the inclined guide surface;

the inclined guide surface is a curved surface, and the angle between the inclined guide surface and a horizontal plane gradually decreases from the front end to the rear end of the inclined guide surface.