Dust extraction structure of dust collection box

Abstract

The utility model relates to the technical field of sweeping robots, in particular to a dust extraction structure of a dust collection box. Comprising a box body, the box body is provided with a dust suction opening, a main air opening, a dust collection air duct and a filter box, the box body is provided with an air inlet and a dust suction opening, and the air inlet and the dust suction opening are oppositely formed in the two ends of the dust collection air duct; an air inlet baffle capable of being opened and closed is arranged on the air inlet, and a first limiting structure is arranged between the air inlet baffle and the box body; a dust extraction baffle capable of being opened and closed is arranged on the dust extraction opening, and a second limiting structure is arranged between the dust extraction baffle and the box body; according to the dust extraction structure of the dust collection box, when the dust extraction opening in the box body is matched with a base station, the air inlet baffle and the dust extraction baffle can be automatically opened under the action of negative pressure, airflow in the dust collection air channel is corrected through the air inlet, dust residues are avoided, the dust extraction efficiency is high, the requirement for wind power of the base station is low, the overall structure is simple and compact, and the cost is lower; and the base station type intelligent floor sweeping robot can be better popularized and applied.

Description

Technical Field

[0001] The utility model relates to the technical field of floor sweeping robots, in particular to a dust collection box dust extraction structure. Background Art

[0002] At present, intelligent floor sweeping robots on the market can already complete intelligent cleaning based on a base station and send the garbage in the dust collection box to the base station for collection. When the floor sweeping robot returns to the base station, it is paired and connected with the integration port on the base station, and the base station sucks the garbage away by connecting the inner cavity of the dust collection box through negative pressure. Since the dust suction port is usually arranged in the middle of the integration box, and the suction port is arranged at one end of the dust collection box, the negative pressure air flow of the base station cannot cover the inner cavity of the integration box, and the garbage in the corner position far from the air extraction port is difficult to be removed.

[0003] Chinese Patent CN116687279A discloses an integration box, a floor sweeping robot and a control method. The dust collection box includes a box body, a dust collection cavity is arranged in the box body, and the box body is also provided with a dust collection port, an air inlet and a dust extraction port communicating with the dust collection cavity. The air inlet and the dust extraction port are respectively arranged at opposite ends of the box body; a first cover member for opening and closing the dust collection port; and a second cover member for opening and closing the air inlet. The first cover member is movably arranged on the box body, and the first cover member is also provided with one of a magnetic body and an electromagnetic body, so that the first cover member opens and closes the dust collection port when being driven by the other of the magnetic body and the electromagnetic body. The dust collection box further includes a driving mechanism for driving the second cover member to move, so that the second cover member opens and closes the air inlet.

[0004] In the above prior art, when the base station sucks dust from the floor sweeping robot, the dust collection port can be covered by the first cover member, and the air inlet is opened by the second cover member to form an air flow path from the air inlet, through the dust extraction port to the base station. Since the air inlet and the dust extraction port are respectively arranged at opposite ends of the box body, the dust extraction air flow flows from one end of the box body towards the opposite end. So that the dust extraction air flow can better cover each position in the dust collection box.

[0005] The prior art requires the floor sweeping robot to control the movements of the first cover member and the second cover member respectively, so that it can cover and control the dust collection port and the air inlet. The actions of the cover members require motor drive and transmission mechanisms to be set, and the overall structure is complex and the cost is high, which is not conducive to the application and popularization of the floor sweeping robot with a base station.

[0006] Therefore, the prior art still needs to be improved and developed. Summary of the Utility Model

[0007] The purpose of the present utility model is to provide a dust collection box dust extraction structure with a reasonable structure, which can reduce the wind force requirement of the base station and has a good dust extraction effect in view of the defects and deficiencies of the prior art.

[0008] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0009] A dust collection box dust extraction structure according to the present utility model includes a box body, on which a dust suction port, a main air port, a dust collection air duct and a filter box are provided. An air inlet and a dust extraction port are provided on the box body, and the air inlet and the dust extraction port are oppositely arranged at both ends of the dust collection air duct; a switchable air inlet baffle is provided on the air inlet, and a first limiting structure is provided between the air inlet baffle and the box body; a switchable dust extraction baffle is provided on the dust extraction port, and a second limiting structure is provided between the dust extraction baffle and the box body. The dust suction port, the main air port, the air inlet and the dust extraction port are all communicated with the dust collection air duct in the box body, and the main air port is used to be paired and connected with the dust suction fan of the sweeping robot, and the dust extraction port is used to be paired with the dust extraction fan on the base station.

[0010] When the box body is docked with the dust suction fan, the negative pressure air flow generated passes through the dust suction port, the dust collection air duct, the filter box and the main air port in sequence, and the dust is filtered by the filter box and stored in the dust collection air duct. At this time, the external dust extraction baffle is limited by the side wall of the box body and the dust extraction port cannot be opened, and the first limiting structure limits the opening of the air inlet baffle.

[0011] When the box body is docked with the dust extraction fan on the base station, since the wind force of the dust extraction fan is greater than that of the dust extraction fan, the negative pressure generated in the dust collection air duct overcomes the first limiting structure to open the air inlet baffle. At this time, the external air flows from the air inlet, the dust collection air duct and the dust extraction port, and the air inlet and the dust extraction port arranged at both ends of the box body enable the air flow to better cover the dust collection air duct, thereby effectively removing the internal dust and improving the dust extraction efficiency.

[0012] It can be understood that when the box body is docked with the base, the main air port can also be closed. At this time, the negative pressure generated by the dust extraction fan can enter the dust collection air duct from the dust suction port and the air inlet and converge at the dust extraction port. The air inlet and the dust suction port should be separately arranged to change the air flow layout of the dust collection air duct and improve the dust extraction efficiency and effect.

[0013] According to the above solution, the box body has a first side wall, a second side wall, a third side wall and a fourth side wall. The first side wall and the third side wall are two opposite side walls of the box body, and the second side wall and the fourth side wall are two opposite side walls of the box body; the air inlet is arranged on the first side wall, and the first limiting structure is arranged between the air inlet baffle and the first side wall; the dust extraction port is arranged on the fourth side wall and the dust extraction port is arranged close to the third side wall, and the second limiting structure is arranged between the dust extraction baffle and the fourth side wall.

[0014] The overall shape of the box body is approximately a cuboid. Of course, the box body has a bottom plate, and the first side wall, the second side wall, the third side wall, and the fourth side wall surround the bottom plate to form a dust collection air duct inside the box body. Among them, the first side wall and the third side wall are arranged on the short sides of the bottom plate as the two end walls of the box body, and the second side wall and the fourth side wall are arranged on the long sides of the bottom plate as the front panel and the rear panel of the box body.

[0015] Specifically, the air inlet is arranged on the first side wall, and the dust extraction port is close to the third side wall. The airflow entering from the air inlet can pass through the dust collection air duct to the greatest extent and take away the internal dust, preventing dust residue.

[0016] According to the above solution, the first limiting structure includes a first rotating shaft and a first torsion spring. The air inlet baffle is arranged inside the first side wall. The upper end of the air inlet baffle is connected to the first side wall through the first rotating shaft. The first torsion spring is sleeved on the first rotating shaft, and the two legs of the first torsion spring are respectively connected to the air inlet baffle and the first side wall, so that the air inlet baffle covers the air inlet. The air inlet baffle is rotatably installed on the first side wall through the first rotating shaft. Under the action of the first torsion spring, the air inlet baffle is paired with the first side wall to cover the air inlet. Of course, a sealing ring is provided on the air inlet baffle to ensure the sealing performance when the air inlet is closed.

[0017] When the suction fan generates negative pressure in the dust collection air duct, the negative pressure only needs to overcome the acting force of the first torsion spring to make the air inlet baffle rotate towards the inside of the box body to open the air inlet. Preferably, the air inlet baffle is rotatably connected to the first side wall through the first rotating shaft. The structure is relatively simple and the cost is very low. The power required to trigger the air inlet baffle is very small and can be controlled by selecting the specification of the first torsion spring. In particular, the first torsion spring always drives the air inlet baffle to tend to close the air inlet. When the opening and closing amplitude of the air inlet baffle is small, the flow rate at the air inlet is higher. When the opening and closing amplitude of the air inlet baffle is large, the flow rate at the air inlet is slightly smaller, and the air pressure at the air inlet is always in a balanced state, which can better remove the dust in the dust collection air duct.

[0018] According to the above solution, a stop end is provided at the upper end of the air inlet baffle. The stop end is paired with the first side wall. When the stop end touches the first side wall, the air inlet baffle flips towards the inside of the box body to open the air inlet, and a ground clearance H1 is formed between the air inlet baffle and the bottom plate of the box body. The size of the ground clearance H1 is equivalent to the air flow rate and flow velocity at the air inlet. A shaft seat is provided on the first side wall to install the first rotating shaft. Similarly, a step structure is provided between the shaft seat and the first side wall. When the air inlet baffle rotates to a certain angle, the stop end touches the step, and the stop end can limit the opening and closing angle of the air inlet baffle, so as to set the maximum value of the ground clearance H1.

[0019] According to the above solution, the first side wall is arranged at an angle C with the bottom plate of the box body, the first side wall is inclined, the air inlet baffle covers the first side wall, and the component force of its own weight has the same direction as the acting force of the first torsion spring. Under the action of a dust suction fan with a relatively low power, it is not sufficient to overcome this acting force, thereby ensuring the stability of the air inlet baffle at the air inlet. The inclined first side wall can reduce the specification of the first torsion spring, reduce the production cost. At the same time, a small-specification first torsion spring has better sensitivity. When the power of the dust extraction fan is slightly greater than that of the dust suction fan, the critical value differentiation control of the air inlet baffle can be realized.

[0020] According to the above solution, the present utility model further includes a damper cover, the damper cover is arranged inside the air inlet baffle, and the upper end of the damper cover is fixedly connected to the first side wall. A ground clearance H2 is formed between the lower end of the damper cover and the bottom plate of the box body. Since the opening and closing amplitude of the above-mentioned air inlet baffle is affected by the size of the negative pressure air flow and there is an unstable situation, the present utility model preferably sets a damper cover inside the air inlet baffle to control the ground clearance H2 at the air inlet through the fixedly arranged damper cover, so as to adapt to the power configuration of the corresponding dust extraction fan on the base station.

[0021] According to the above solution, the second limiting structure includes a second rotating shaft and a second torsion spring. The upper end of the dust extraction baffle is connected to the fourth side wall through the second rotating shaft; the second torsion spring is sleeved on the second rotating shaft, and the two legs of the second torsion spring are respectively connected to the dust extraction baffle and the fourth side wall. The dust extraction baffle can perform an opening and closing movement on the dust extraction port through the second rotating shaft. In the dust suction mode, the negative pressure in the dust collection air duct will make the dust extraction baffle closer to the fourth side wall. Of course, a sealing ring is provided on the dust extraction baffle to maintain the tightness of the dust extraction port. When the box body is docked on the base, the negative pressure generated by the dust extraction fan acts on the dust extraction baffle, causing its dust extraction port to open and communicate with the dust collection air duct.

[0022] According to the above solution, the dust suction port is arranged on the second side wall, and a dust suction baffle is arranged inside the dust suction port. The upper end of the dust suction baffle is rotatably connected to the second side wall, and the dust suction baffle covers the dust suction port by gravity. The dust suction port is closed by the dust suction baffle under normal conditions. When the main air inlet or the dust extraction port is connected to a fan to generate negative pressure in the dust collection air duct, the dust suction baffle will automatically open to suck dust into the dust collection air duct.

[0023] According to the above solution, the upper end of the box body is open, a dust box bracket is arranged on the upper port of the box body, and the main air inlet is arranged on the dust box bracket; the filter box is arranged inside the dust box bracket, and a key switch for cooperating with the filter box is arranged on the dust box bracket; a upper cover is arranged on the dust box bracket, and the upper cover is detachably connected to the dust box bracket. The principle of the filter box is the same as that of the prior art, so it will not be elaborated here. It can be understood that the upper cover can open the dust box bracket, and the filter box is detachably arranged on the dust box bracket for convenient subsequent cleaning.

[0024] A dust collection box dust extraction structure of the present utility model can automatically open the air inlet baffle and the dust extraction baffle under the action of negative pressure when the dust extraction port on the box body is paired with the base station. By correcting the airflow in the dust collection air duct through the air inlet, it can avoid dust residue, has high dust extraction efficiency, low wind force requirement for the base station, the overall structure is simple and compact, and the cost is lower, enabling better popularization and application of the base station type intelligent floor sweeping robot. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is the overall structure schematic diagram of the present utility model;

[0026] Figure 2 is the exploded structure schematic diagram of the present utility model;

[0027] Figure 3 is the front view structure schematic diagram of the present utility model;

[0028] Figure 4 is the rear view structure schematic diagram of the present utility model;

[0029] Figure 5 is the vertical sectional structure schematic diagram of the present utility model;

[0030] Figure 6 is Figure 5 the enlarged structure schematic diagram of part A in

[0031] In the figure:

[0032] 1. Box body; 2. Filter box; 3. Air inlet baffle; 4. Dust extraction baffle; 11. Dust suction port; 12. Main air inlet; 13. Dust collection air duct; 14. Air inlet; 15. Dust extraction port; 16. Dust suction baffle; 21. Dust box bracket; 22. Button switch; 23. Upper cover; 31. First rotating shaft; 32. First torsion spring; 33. Stopping end; 34. Air door cover; 41. Second rotating shaft; 42. Second torsion spring; 101. First side wall; 102. Second side wall; 103. Third side wall; 104. Fourth side wall; 105. Bottom plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] The technical solutions of the present utility model will be described below in conjunction with the drawings and embodiments.

[0034] As Figures 1-6As shown in the figure, a dust collection box dust extraction structure of the present utility model includes a box body 1, on which a dust suction port 11, a main air port 12, a dust collection air duct 13 and a filter box 2 are provided. An air inlet 14 and a dust extraction port 15 are provided on the box body 1, and the air inlet 14 and the dust extraction port 15 are oppositely arranged at both ends of the dust collection air duct 13. An openable air inlet baffle 3 is provided on the air inlet 14, and a first limiting structure is provided between the air inlet baffle 3 and the box body 1. An openable dust extraction baffle 4 is provided on the dust extraction port 15, and a second limiting structure is provided between the dust extraction baffle 4 and the box body 1. The dust suction port 11, the main air port 12, the air inlet 14 and the dust extraction port 15 are all communicated with the dust collection air duct 13 in the box body 1, and the main air port 12 is used to be paired and connected with the dust suction fan of the sweeping robot, and the dust extraction port 15 is used to be paired and connected with the dust extraction fan on the base station.

[0035] The dust suction port 11, the main air port 12, the air inlet 14 and the dust extraction port 15 are all arranged on the side wall of the box body 1 and are respectively paired and communicated with the dust collection air duct 13 inside the box body 1. The filter box 2 is arranged between the integrated air duct 13 and the main air port 12. When the main air port 12 is docked with the dust suction fan of the sweeping robot, the negative pressure air flow generated when the box body 1 is docked with the dust suction fan sequentially passes through the dust suction port 11, the dust collection air duct 13, the filter box 2 and the main air port 12, and the dust is filtered by the filter box 2 and stored in the dust collection air duct 13. At this time, the external dust extraction baffle 4 is limited by the side wall of the box body 1 and the dust extraction port 15 cannot be opened, and the first limiting structure limits the opening of the air inlet baffle 3.

[0036] When the box body 1 is docked with the dust extraction fan on the base station, since the wind force of the dust extraction fan is greater than that of the dust suction fan, the negative pressure generated in the dust collection air duct 13 overcomes the first limiting structure to open the air inlet baffle 3. At this time, the external air flows from the air inlet 14, the dust collection air duct 13 and the dust extraction port 15. The air inlet 14 and the dust extraction port 15 arranged at both ends of the box body 1 enable the air flow to better cover the dust collection air duct 13, thereby effectively removing the internal dust and improving the dust extraction efficiency.

[0037] It can be understood that when the box body 1 is docked with the base, the main air port 12 can also be closed. At this time, the negative pressure generated by the dust extraction fan can enter the dust collection air duct 13 from the dust suction port 11 and the air inlet 14 and converge at the dust extraction port 15. The air inlet 14 and the dust suction port 11 should be separately arranged to change the air flow layout of the dust collection air duct 13 and improve the dust extraction efficiency and effect.

[0038] The box body 1 has a first side wall 101, a second side wall 102, a third side wall 103 and a fourth side wall 104. The first side wall 101 and the third side wall 103 are two opposite side walls of the box body 1, and the second side wall 102 and the fourth side wall 104 are two opposite side walls of the box body 1. The air inlet 14 is provided on the first side wall 101, and the first limiting structure is provided between the air inlet baffle 3 and the first side wall 101. The dust extraction port 15 is provided on the fourth side wall 104 and the dust extraction port 15 is arranged close to the third side wall 103, and the second limiting structure is provided between the dust extraction baffle 4 and the fourth side wall 104.

[0039] The whole of the box body 1 is approximately a cuboid. Of course, the box body 1 has a bottom plate 105, and the first side wall 101, the second side wall 102, the third side wall 103 and the fourth side wall 104 surround the bottom plate 105 to form a dust collection air duct 13 inside the box body 1. Among them, the first side wall 101 and the third side wall 103 are arranged on the short sides of the bottom plate 105 as the two end walls of the box body 1, and the second side wall 102 and the fourth side wall 104 are arranged on the long sides of the bottom plate 105 as the front panel and the rear panel of the box body 1.

[0040] Specifically, the air inlet 14 is provided on the first side wall 101, and the dust extraction port 15 is close to the third side wall 103. The airflow entering from the air inlet 14 can pass through the dust collection air duct 13 to the maximum extent and take away the internal dust, preventing dust residue.

[0041] The first limiting structure includes a first rotating shaft 31 and a first torsion spring 32. The air inlet baffle 3 is arranged inside the first side wall 101. The upper end of the air inlet baffle 3 is connected to the first side wall 101 through the first rotating shaft 31. The first torsion spring 32 is sleeved on the first rotating shaft 31, and the two legs of the first torsion spring 32 are respectively connected to the air inlet baffle 3 and the first side wall 101, so that the air inlet baffle 3 covers the air inlet 14. The air inlet baffle 3 is rotatably installed on the first side wall 101 through the first rotating shaft 31. Under the action of the first torsion spring 32, the air inlet baffle 3 is paired with the first side wall 101 to cover the air inlet 14. Of course, a sealing ring is provided on the air inlet baffle 3 to ensure the sealing performance when the air inlet 14 is closed.

[0042] When the exhaust fan generates negative pressure in the dust collection duct 13, the negative pressure only needs to overcome the acting force of the first torsion spring 32 to cause the air inlet baffle 3 to rotate inwardly towards the inside of the box body 1 to open the air inlet 14. Preferably, the air inlet baffle 3 is rotatably connected to the first side wall 101 through the first rotating shaft 31, with a relatively simple structure and low cost. The power required to trigger the air inlet baffle 3 is very small and can be controlled by selecting the specification of the first torsion spring 32. In particular, the first torsion spring 32 always drives the air inlet baffle 3 to tend to close the air inlet 14. When the opening and closing amplitude of the air inlet baffle 3 is small, the flow rate at the air inlet 14 is higher. When the opening and closing amplitude of the air inlet baffle 3 is large, the flow rate at the air inlet 14 is slightly smaller, and the air pressure at the air inlet 14 is always in a balanced state, which can better remove the dust in the dust collection duct 13.

[0043] A stop end 33 is provided at the upper end of the air inlet baffle 3. The stop end 33 is paired with the first side wall 101. When the stop end 33 abuts against the first side wall 101, the air inlet baffle 3 flips inwardly into the box body 1 to open the air inlet 14, and a ground clearance H1 is formed between the air inlet baffle 3 and the bottom plate 105 of the box body 1. The size of the ground clearance H1 is equivalent to the air flow rate and flow velocity at the air inlet 14. A shaft seat is provided on the first side wall 101 to install the first rotating shaft 31. Similarly, a stepped structure is provided between the shaft seat and the first side wall 101. When the air inlet baffle 3 rotates to a certain angle, the stop end 33 abuts against the step, and the stop end 33 can limit the opening and closing angle of the air inlet baffle 3, thereby setting the maximum value of the ground clearance H1.

[0044] The first side wall 101 and the bottom plate 105 of the box body 1 are arranged at an included angle C, and the first side wall 101 is inclined. The air inlet baffle 3 covers the first side wall 101, and the component force of its own weight is in the same direction as the acting force of the first torsion spring 32. Under the action of a dust suction fan with a relatively small power, it is not sufficient to overcome this acting force, thereby ensuring the stability of the air inlet baffle 3 at the air inlet 14. The inclined first side wall 101 can reduce the specification of the first torsion spring 32 and lower the production cost. At the same time, the small-specification first torsion spring 32 has better sensitivity. By making the power of the dust extraction fan slightly greater than the power of the dust suction fan, the critical value discrimination control of the air inlet baffle 3 can be realized.

[0045] The present utility model further includes a damper cover 34. The damper cover 34 is arranged inside the air inlet baffle 3, and the upper end of the damper cover 34 is fixedly connected to the first side wall 101. A ground clearance H2 is formed between the lower end of the damper cover 34 and the bottom plate 105 of the box body 1. Since the opening and closing amplitude of the above-mentioned air inlet baffle 3 is affected by the magnitude of the negative pressure air flow and there is an unstable situation, the present utility model preferably provides a damper cover 34 inside the air inlet baffle 3 to control the ground clearance H2 at the air inlet 14 through the fixedly arranged damper cover 34, so as to adapt to the power configuration of the corresponding dust extraction fan on the base station.

[0046] The second limiting structure includes a second rotating shaft 41 and a second torsion spring 42. The dust extraction baffle 4 is arranged outside the fourth side wall 104, and the upper end of the dust extraction baffle 4 is connected to the fourth side wall 104 through the second rotating shaft 41; the second torsion spring 42 is sleeved on the second rotating shaft 41, and the two legs of the second torsion spring 42 are respectively connected to the dust extraction baffle 4 and the fourth side wall 104. The dust extraction baffle 4 can open and close on the dust extraction port 15 through the second rotating shaft 41. In the dust suction mode, the negative pressure in the dust collection air duct 13 will make the dust extraction baffle 4 closer to the fourth side wall 104. Of course, a sealing ring is provided on the dust extraction baffle 4 to maintain the sealing performance of the dust extraction port 15. When the box body 1 is docked on the base, the negative pressure generated by the dust extraction fan acts on the dust extraction baffle 4, causing the dust extraction port 15 to open and communicate with the dust collection air duct 13.

[0047] The dust suction port 11 is arranged on the second side wall 102, and a dust suction baffle 16 is arranged inside the dust suction port 11. The upper end of the dust suction baffle 16 is rotatably connected to the second side wall 102, and the dust suction baffle 16 covers the dust suction port 11 by gravity. The dust suction port 11 is closed by the dust suction baffle 16 under normal conditions. When a negative pressure is generated in the dust collection air duct 13 by docking the main air port 12 or the dust extraction port 15 to the fan, the dust suction baffle 16 will automatically open to suck the dust into the dust collection air duct 13.

[0048] The upper end of the box body 1 is open, and a dust box bracket 21 is arranged on the upper port of the box body 1. The main air port 12 is arranged on the dust box bracket 21; the filter box 2 is arranged in the dust box bracket 21, and a key switch 22 for cooperating with the filter box 2 is arranged on the dust box bracket 21; an upper cover 23 is arranged on the dust box bracket 21, and the upper cover 23 is detachably connected to the dust box bracket 21. The principle of the filter box 2 is the same as that of the prior art, so it will not be elaborated here. It can be understood that the upper cover 23 can open the dust box bracket 21, and the filter box 2 is detachably arranged on the dust box bracket 21 for convenient subsequent cleaning.

[0049] The above description is only a preferred embodiment of the present invention. Therefore, any equivalent changes or modifications made according to the structures, features, and principles described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

Claims

1. A dust collecting box dust extraction structure, comprising a box body (1), wherein the box body (1) is provided with a dust suction port (11), a main air port (12), a dust collecting air duct (13) and a filter box (2), characterized in that: The box body (1) is provided with an air inlet (14) and a dust extraction port (15), and the air inlet (14) and the dust extraction port (15) are arranged opposite to each other at two ends of the dust collection air duct (13); The air inlet (14) is provided with an openable and closable air inlet baffle (3), and a first limiting structure is provided between the air inlet baffle (3) and the box body (1); The dust extraction port (15) is provided with an openable and closable dust extraction baffle (4), and a second limiting structure is provided between the dust extraction baffle (4) and the box body (1).

2. The dust collecting box dust extraction structure according to claim 1, characterized in that: The box body (1) comprises a first side wall (101), a second side wall (102), a third side wall (103) and a fourth side wall (104); the first side wall (101) and the third side wall (103) are two opposite side walls on the box body (1); the second side wall (102) and the fourth side wall (104) are two opposite side walls on the box body (1); the air inlet (14) is arranged on the first side wall (101); the first limiting structure is arranged between the air inlet baffle (3) and the first side wall (101); the dust extraction port (15) is arranged on the fourth side wall (104) and the dust extraction port (15) is arranged close to the third side wall (103); the second limiting structure is arranged between the dust extraction baffle (4) and the fourth side wall (104).

3. The dust collecting box dust extraction structure according to claim 2, characterized in that: The first limiting structure comprises a first rotating shaft (31) and a first torsion spring (32); the air inlet baffle (3) is arranged on the inner side of the first side wall (101); the upper end of the air inlet baffle (3) is connected to the first side wall (101) via the first rotating shaft (31); the first torsion spring (32) is sleeved on the first rotating shaft (31); two legs of the first torsion spring (32) are respectively connected to the air inlet baffle (3) and the first side wall (101), so that the air inlet baffle (3) covers the air inlet (14).

4. The dust collecting box dust extraction structure according to claim 3, characterized in that: The upper end of the air inlet baffle (3) is provided with a stop end (33), and the stop end (33) is arranged in pair with the first side wall (101). When the stop end (33) contacts the first side wall (101), the air inlet baffle (3) turns inside the box body (1) so that the air inlet port (14) is opened, and a ground clearance H1 is formed between the air inlet baffle (3) and the bottom plate (105) of the box body (1).

5. The dust collecting box dust extraction structure according to any one of claims 2 to 4, characterized in that: The first side wall (101) and the bottom plate (105) of the box body (1) are arranged at an angle C.

6. The dust collecting box dust extraction structure according to claim 1, characterized in that: It also includes a damper cover (34), which is arranged on the inner side of the air inlet baffle (3), and the upper end of the damper cover (34) is fixedly connected to the first side wall (101), and a ground clearance H2 is formed between the lower end of the damper cover (34) and the bottom plate (105) of the box body (1).

7. The dust collecting box dust extraction structure according to claim 1, characterized in that: The second limiting structure comprises a second rotating shaft (41) and a second torsion spring (42); the dust extraction baffle (4) is arranged on the outer side of the fourth side wall (104), and the upper end of the dust extraction baffle (4) is connected to the fourth side wall (104) via the second rotating shaft (41); the second torsion spring (42) is sleeved on the second rotating shaft (41), and the two legs of the second torsion spring (42) are respectively connected to the dust extraction baffle (4) and the fourth side wall (104).

8. The dust collecting box dust extraction structure according to claim 1, characterized in that: The dust suction port (11) is arranged on the second side wall (102), a dust suction baffle (16) is arranged on the inner side of the dust suction port (11), the upper end of the dust suction baffle (16) is rotatably connected to the second side wall (102), and the dust suction baffle (16) is sealed on the dust suction port (11) by gravity.

9. The dust collecting box dust extraction structure according to claim 1, characterized in that: The upper end of the box body (1) is open, a dust box bracket (21) is provided on the upper end of the box body (1), and the main air outlet (12) is provided on the dust box bracket (21); the filter box (2) is provided in the dust box bracket (21), and the dust box bracket (21) is provided with a key switch (22) that is connected to the filter box (2); the dust box bracket (21) is provided with an upper cover (23), and the upper cover (23) is detachably connected to the dust box bracket (21).

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