Pneumatic cleaning base station for mowing machine

Abstract

The invention relates to the field of mowing machine cleaning, and discloses a mowing machine pneumatic cleaning base station which comprises a base station body, at least one air blowing part and at least one fan assembly, the base station body is provided with a containing cavity, the air blowing part is arranged in the containing cavity, the air blowing part partially protrudes out of the base station body, and the fan assembly is arranged in the containing cavity. The fan assembly is fixedly connected with the base station body, and the fan assembly is connected with the air blowing piece through a pipeline; the fan assembly comprises a rotary driving assembly, an impeller and a flow guide cone, the impeller is arranged at the power output end of the rotary driving assembly, the rotary driving assembly is used for driving the impeller to rotate, and the flow guide cone is arranged on the side, away from the rotary driving assembly, of the impeller. The rotary driving assembly in the fan assembly drives the impeller to rotate at a high speed, the generated high-pressure airflow is conveyed to the air blowing piece through the pipeline and is blown to the bottom of the mower, automatic pneumatic cleaning of the bottom of the mower is achieved, manual participation is not needed, and the cleaning efficiency is remarkably improved.

Description

Technical Field

[0001] This application relates to the field of lawnmower cleaning, and more particularly to a pneumatic cleaning base station for lawnmowers. Background Technology

[0002] In automated cleaning equipment such as lawnmower base stations, grass clippings and other debris easily accumulate on the lawnmower's chassis during operation. Over time, this accumulation affects the lawnmower's efficiency and lifespan. Currently, cleaning the underside of lawnmowers primarily relies on manual labor, resulting in poor cleaning effectiveness and low efficiency. Summary of the Invention

[0003] In view of this, the purpose of this application is to overcome the shortcomings of the prior art and provide a pneumatic cleaning base station for lawnmowers.

[0004] To achieve the above objectives, the technical solution adopted in this application is as follows: This application provides: A pneumatic cleaning base station for lawnmowers, comprising: A base station body, wherein the base station body has a receiving cavity; A blower, having at least one and disposed within the receiving cavity, wherein a portion of the blower protrudes outside the base station body; A fan assembly, having at least one fan assembly disposed within the receiving cavity, the fan assembly being fixedly connected to the base station body, and the fan assembly being connected to the blower via a pipeline; the fan assembly includes a rotary drive assembly, an impeller, and a guide cone, the impeller being disposed at the power output end of the rotary drive assembly, the rotary drive assembly being used to drive the impeller to rotate, and the guide cone being disposed on the side of the impeller opposite to the rotary drive assembly.

[0005] Furthermore, the cross-sectional area of ​​the guide cone gradually decreases along the direction of the airflow from the impeller, the guide cone is conical, and the taper of the guide cone is between 30° and 80°.

[0006] Furthermore, the fan assembly also includes a fan shroud, which has an air outlet cavity. The rotary drive assembly is connected to the fan shroud, and the impeller is located inside the air outlet cavity. The fan shroud includes a mounting portion, a transition portion, and an exhaust portion. The mounting portion has a first chamber, and the impeller is located inside the first chamber. The transition portion is located at one end of the mounting portion, and the exhaust portion is located at the end of the transition portion away from the mounting portion. The exhaust portion has a second chamber, and the first chamber and the second chamber communicate to form the air outlet cavity. The exhaust portion has at least one air outlet communicating with the second chamber.

[0007] Furthermore, the exhaust section is circular or rectangular.

[0008] Furthermore, the rotary drive assembly includes a rotary drive component and a bracket, the bracket being connected to the shroud and a portion of the bracket being located within the air outlet cavity, the rotary drive component being fixedly connected to the bracket, and the power output shaft of the rotary drive component extending into the air outlet cavity and connected to the impeller.

[0009] Furthermore, the bracket includes a housing, a mounting frame, and a guide plate. The housing is connected to the hood and partially located within the air outlet cavity. The housing has an air inlet cavity, and the mounting frame is disposed within the air inlet cavity. The mounting frame has multiple guide plates evenly spaced around its periphery. The ends of the guide plates facing away from the mounting frame are connected to the inner wall of the air inlet cavity.

[0010] Furthermore, the mounting frame includes a mounting shell and an end plate. The mounting shell is connected to each of the guide plates. The end plate is provided at one end of the mounting shell facing the impeller. The mounting shell and the end plate enclose a mounting cavity. The rotary drive is disposed in the mounting cavity, and the power output shaft of the rotary drive passes through the end plate and is connected to the impeller.

[0011] Furthermore, the mounting housing has multiple through slots on its sidewall, which are located between two adjacent mounting cavities to connect the mounting cavity with the air inlet cavity.

[0012] Furthermore, the guide plate protrudes from the outer casing on the side opposite to the impeller.

[0013] Furthermore, the bracket also includes multiple connecting ears, which are evenly spaced on the periphery of the housing and connected to the base station body.

[0014] This application utilizes a rotary drive component in the fan assembly to drive the impeller to rotate at high speed. The resulting high-pressure airflow is transported through pipelines to the blower and blown towards the bottom of the lawnmower, achieving automated pneumatic cleaning of the bottom of the lawnmower without manual intervention, significantly improving cleaning efficiency. At the same time, by setting a guide cone on the side of the impeller away from the rotary drive component, the airflow can be effectively guided, reducing airflow separation and eddy current generation, thereby reducing wind resistance and operating noise, improving cleaning effect and enhancing the working stability of the fan assembly.

[0015] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the explosion state of the clean base station of this application is shown; Figure 2 This paper shows a schematic diagram of the structure of the wind turbine assembly under an explosive state. Figure 3 A cross-sectional schematic diagram of the shroud with one air outlet is shown in this application; Figure 4 A cross-sectional schematic diagram of the shroud with two air outlets is shown in this application; Figure 5 A cross-sectional schematic diagram of the wind turbine assembly of this application is shown; Figure 6 This is a schematic diagram of the bracket from a first-view perspective. Figure 7 A second-view schematic diagram of the bracket of this application is shown.

[0018] Explanation of key component symbols: 100 - Base station body; 110 - Lower housing; 120 - Upper housing; 101 - Receiving cavity; 200 - Blowering component; 300 - Fan assembly; 310 - Air cover; 301 - Air outlet cavity; 311 - Mounting part; 3101 - First chamber; 312 - Transition part; 313 - Exhaust part; 3102 - Second chamber; 3130 - Air outlet; 320 - Rotary drive assembly; 321 - Rotary drive component; 322 - Bracket; 3221 - Housing; 32210 - Air inlet cavity; 3222 - Mounting bracket; 32221 - Mounting shell; 32222 - End plate; 32223 - Mounting cavity; 32224 - Through slot; 3223 - Guide plate; 3224 - Connecting ear; 330 - Impeller; 340 - Guide cone. Detailed Implementation

[0019] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0020] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0022] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0023] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0024] This application provides a pneumatic cleaning base station for a lawnmower. The base station includes a base station body 100, a blower 200, and a fan assembly 300. The base station body 100 has a receiving cavity 101. At least one blower 200 is disposed within the receiving cavity 101, and a portion of the blower 200 protrudes outside the base station body 100. At least one fan assembly 300 is disposed within the receiving cavity 101. The fan assembly 300 is fixedly connected to the base station body 100, and the fan assembly 300 is connected to the blower 200 via a pipeline. The fan assembly 300 includes a rotary drive assembly 320, an impeller 330, and a guide cone 340. The impeller 330 is disposed at the power output end of the rotary drive assembly 320, which drives the impeller 330 to rotate. The guide cone 340 is disposed on the side of the impeller 330 away from the rotary drive assembly 320.

[0025] See Figure 1 The base station body 100 has a lower housing 110 and an upper housing 120 connected to each other, with the upper housing 120 located above the lower housing 110. After the two are connected, they define a receiving cavity 101, which is used to accommodate and install the blower 200 and the fan assembly 300. The upper surface of the upper housing 120 is a bearing surface, which is used to support the lawnmower that needs to be cleaned. That is, the fan assembly 300 delivers high-pressure air to the blower 200, and then blows air through the air outlet on the blower 200 toward the bottom of the lawnmower located on the bearing surface for cleaning.

[0026] The bottom of the lawnmower has a front chassis area, a blade area, and a chassis area, which require a varying number of blower units 200 for air cleaning. (See [reference needed]). Figure 1 As shown in this embodiment, in order to fully clean different areas of the bottom of the lawnmower with air blowing, there are multiple blower components 200 and blower assemblies 300. It is understood that different blower assemblies 300 can have different numbers of gas outlets to connect to different numbers of blower components 200 and provide high-pressure gas to the blower components 200 for cleaning the lawnmower. It is understood that the linkage between multiple blower components 200 and multiple blower assemblies 300 can clean different areas of the bottom of the lawnmower with air blowing to ensure the cleanliness of the lawnmower.

[0027] In this embodiment, the blower 200 has multiple air outlets, and the multiple air outlets are spaced apart.

[0028] Understandably, when the lawnmower enters the bearing surface of the upper housing 120, multiple blower components 300 can be activated simultaneously to deliver air to different blower components 200. The air is then blown towards the bottom of the lawnmower through the air outlet of the blower component 200 to achieve cleaning. The entire process does not require manual intervention, which greatly improves cleaning efficiency and cleaning effect.

[0029] See Figure 2 As shown, the blower assembly 300 mainly delivers external air into the blower component 200 and blows it towards the lawnmower through the air outlet of the blower component 200 to clean the bottom of the lawnmower. Specifically, the rotary drive assembly 320 drives the impeller 330 to rotate, thereby delivering external gas to the blower component 200 through the gas pipeline. During the process of the impeller 330 rotating and delivering air, noise is easily generated due to its high-speed rotation. Therefore, a guide cone 340 is provided at the end of the impeller 330 away from the rotary drive assembly 320. The outer surface of the guide cone 340 is smooth, so that the gas can pass smoothly through the rotary drive assembly 320 and reduce airflow separation and vortex generation in the area of ​​the impeller 330 away from the rotary drive assembly 320, effectively reducing wind resistance and improving the overall efficiency of the blower and reducing noise.

[0030] For example, the impeller 330 is a forward-inclined centrifugal turbine impeller, and its hub is fixed to the output shaft of the rotary drive assembly 320 by set screws.

[0031] In some embodiments, the cross-sectional area of ​​the guide cone 340 gradually decreases along the direction of the airflow blown by the impeller 330, the guide cone 340 is conical, and the taper of the guide cone 340 is between 30° and 80°.

[0032] Continue as Figure 2 The guide cone 340 is generally conical, and its outer circumferential surface is a smooth curved surface. The cross-sectional area of ​​the guide cone 340 gradually decreases along its length. The taper of the guide cone 340 can be 30°, 40°, 50°, 60°, 70°, 80°, etc., and the specific value is not limited here. In this embodiment, the taper of the guide cone 340 is 60°.

[0033] Specifically, the guide cone 340 is an independent plastic part. The bottom of the large end of the guide cone 340 is provided with a mounting post, which is connected and fixed to the threaded hole on the hub of the rotary drive assembly 320 by screws. The conical surface of the guide cone 340 completely covers the front end of the hub of the rotary drive assembly 320, and the front end of the guide cone 340 protrudes slightly from the rotary drive assembly 320.

[0034] In some embodiments, the fan assembly 300 further includes a shroud 310, which has an air outlet cavity 301. The rotary drive assembly 320 is connected to the shroud 310, and the impeller 330 is located inside the air outlet cavity 301. The shroud 310 includes a mounting portion 311, a transition portion 312, and an exhaust portion 313. The mounting portion 311 has a first chamber 3101, and the impeller 330 is located inside the first chamber 3101. The transition portion 312 is disposed at one end of the mounting portion 311, and the exhaust portion 313 is disposed at the end of the transition portion 312 away from the end of the mounting portion 311. The exhaust portion 313 has a second chamber 3102, and the first chamber 3101 and the second chamber 3102 communicate to form the air outlet cavity 301. The exhaust portion 313 has at least one air outlet 3130 that communicates with the second chamber 3102.

[0035] See Figure 2 and Figure 3 As shown, in order to provide a mounting position for the rotary drive assembly 320, a shroud 310 is provided in the receiving cavity 101, and the shroud 310 has an air outlet cavity 301. The rotary drive assembly 320 is connected to the shroud 310 and is partially located in the air outlet cavity 301. It can be understood that when air is supplied to the blower 200, the rotary drive assembly 320 drives the impeller 330 to rotate to supply external air to the air outlet cavity 301, and then supplies it to the air duct through the air outlet 3130 and finally to the blower 200.

[0036] like Figure 3 As shown, the shroud 310 has an air outlet 3130, meaning that the shroud 310 can only be connected to one blower 200 through one gas pipe. At this time, the cross-section of the shroud 310 is gradually changing, that is, the cross-sectional area is smaller closer to the air outlet 3130. Correspondingly, if the gas flow rate delivered by the impeller 330 remains unchanged, the gas pressure at the air outlet 3130 is greater, and the gas pressure delivered to the blower 200 is also greater.

[0037] Specifically, the hood 310 mainly includes a mounting part 311, a transition part 312, and an exhaust part 313. It can be understood that the mounting part 311, the transition part 312, and the exhaust part 313 are integrally formed and connected, and their cross-sectional areas gradually decrease. That is, the cross-sectional area of ​​the transition part 312 is smaller than that of the mounting part 311 and larger than that of the exhaust part 313, and the transition part 312 is connected to the mounting part 311 and the exhaust part 313 by an arc surface transition or a slope transition.

[0038] In other embodiments, the air outlet 3130 may be multiple, such as Figure 4 and Figure 5As shown, two air outlets 3130 are provided on the exhaust section 313, which means that two blowers 200 can be connected through two gas pipes, and the two blowers 200 share one air source. In practice, the number of air outlets 3130 can also be three, four, five, etc. The specific number is not limited here, and different numbers can be selected according to the actual design needs.

[0039] When there is only one air outlet 3130, the exhaust section 313 is circular; when there are two or more air outlets 3130, the exhaust section 313 is rectangular.

[0040] In some embodiments, the rotary drive assembly 320 includes a rotary drive member 321 and a bracket 322. The bracket 322 is connected to the shroud 310, and a portion of the bracket 322 is located within the air outlet cavity 301. The rotary drive member 321 is fixedly connected to the bracket 322, and the power output shaft of the rotary drive member 321 extends into the air outlet cavity 301 and is connected to the impeller 330.

[0041] See Figure 2 and Figure 5 As shown, the rotary drive 321 is fixedly mounted on the bracket 322, and the bracket 322 is fixedly mounted on the fan cover 310. The bracket 322 is partially located inside the air outlet cavity 301. The rotating shaft of the rotary drive 321 passes through the bracket 322 and is connected to the impeller 330. The rotary drive 321 drives the impeller 330 to rotate so as to transport the external gas to the air outlet cavity 301, and finally deliver it to the blower 200 through the air outlet 3130.

[0042] For example, the rotary drive 321 is a motor, and specifically the rotary drive 321 is a brushless motor.

[0043] In some embodiments, the bracket 322 includes a housing 3221, a mounting frame 3222, and a guide plate 3223. The housing 3221 is connected to the hood 310 and is partially located inside the air outlet cavity 301. The housing 3221 is provided with an air inlet cavity 32210. The mounting frame 3222 is provided inside the air inlet cavity 32210. A plurality of guide plates 3223 are provided on the circumferential surface of the mounting frame 3222. The end of the guide plate 3223 facing away from the mounting frame 3222 is connected to the inner wall of the air inlet cavity 32210.

[0044] like Figure 5 , Figure 6 as well as Figure 7 As shown, the outer casing 3221 is cylindrical in shape and has an air inlet cavity 32210. The mounting bracket 3222 is located inside the air inlet cavity 32210. The mounting bracket 3222 is used to install and fix the rotary drive 321, and the shaft of the rotary drive 321 passes through the mounting bracket 3222 and is connected to the impeller 330.

[0045] Furthermore, in order to ensure the stability of the mounting bracket 3222 within the air inlet cavity 32210, a plurality of evenly spaced guide plates 3223 are fixedly arranged between the circumferential surface of the mounting bracket 3222 and the inner wall of the air inlet cavity 32210. That is, the mounting bracket 3222 is connected to the outer shell 3221 through a plurality of guide plates 3223. In this embodiment, the guide plate 3223 is generally sheet-shaped, and a gas channel is defined between two adjacent guide plates 3223. As the rotating drive member 321 drives the impeller 330 to rotate, the external air will pass through the gas channel into the air outlet cavity 301 and be delivered to the blower 200 through the air outlet 3130.

[0046] In this embodiment, the guide plate 3223 is inclined relative to the central axis of the housing 3221, so that the gas ducts defined by two adjacent guide plates 3223 are also inclined. When air enters the inclined gas ducts, it will change direction and directly act on the blades of the impeller 330, thereby improving the efficiency of air delivery to the air outlet 301.

[0047] In some embodiments, the mounting frame 3222 includes a mounting shell 32221 and an end plate 32222. The mounting shell 32221 is connected to each guide plate 3223. The end plate 32222 is provided at one end of the mounting shell 32221 facing the impeller 330. The mounting shell 32221 and the end plate 32222 enclose a mounting cavity 32223. A rotary drive 321 is disposed in the mounting cavity 32223, and the power output shaft of the rotary drive 321 passes through the end plate 32222 and is connected to the impeller 330.

[0048] like Figure 5 and Figure 6 The entire mounting frame 3222 is a cylindrical ring with an opening. Specifically, the mounting shell 32221 and the end plate 32222 are integrally formed, and the end plate 32222 is located at the end of the mounting shell 32221 facing the impeller 330. At this time, the mounting shell 32221 and the end plate 32222 define a mounting cavity 32223 for accommodating and mounting the rotary drive 321. In order to enable the power output shaft of the rotary drive 321 to pass through the end plate 32222 and connect with the impeller 330, a through hole is opened on the end plate 32222. The output shaft of the rotary drive 321 passes through the through hole and connects with the rotary drive 321.

[0049] In some embodiments, the sidewall of the mounting housing 32221 is provided with a plurality of through slots 32224, which are located between two adjacent mounting cavities 32223 to connect the mounting cavity 32223 with the air inlet cavity 32210.

[0050] Please continue reading. Figure 6As shown, multiple through slots 32224 are opened on the inner wall of the mounting housing 32221, so that the mounting cavity 32223 is connected to the air inlet cavity 32210. Specifically, the mounting cavity 32223 is connected to the gas channel defined between two adjacent guide plates 3223 through the through slots 32224. It can be understood that when the gas enters the air outlet cavity 301 through the gas channel, the airflow will contact the rotating drive component 321 installed in the mounting cavity 32223 to remove the heat generated by the rotating drive component 321. To a certain extent, this can prevent the rotating drive component 321 from being damaged due to overheating after long-term use, thereby improving the service life of the rotating drive component 321.

[0051] In some embodiments, the guide vane 3223 protrudes from the housing 3221 on the side opposite to the impeller 330.

[0052] like Figure 6 and Figure 7 As shown, by making the air deflector 3223 protrude from the outer casing 3221, the air can be guided to a certain extent before entering the air intake chamber 32210, thereby reducing noise generation to a certain extent.

[0053] In some embodiments, the bracket 322 further includes a connecting ear 3224, which has a plurality of connecting ears 3224. The plurality of connecting ears 3224 are evenly spaced on the periphery of the housing 3221 and are connected to the base station body 100.

[0054] See Figure 2 , Figure 5 , Figure 6 as well as Figure 7 As shown, a portion of the outer casing 3221 is located inside the air outlet cavity 301 and connected to the mounting part 311, while the other portion of the outer casing 3221 protrudes outside the air outlet cavity 301. The connecting ear 3224 is fixedly mounted on the outer casing 3221 protruding outside the air outlet cavity 301. In order to fix the entire rotary drive assembly 320 and the fan cover 310 relative to the base station body 100, the bracket 322 is connected to the inner wall of the receiving cavity 101 through the connecting ear 3224 to achieve fixation relative to the base station body 100. The connecting ear 3224 can be fixed to the inner wall of the receiving cavity 101 by screw fastening. Correspondingly, corresponding screw posts can be provided on the inner wall of the receiving cavity 101 to achieve screw fastening connection.

[0055] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0056] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A pneumatic cleaning base station for lawnmowers, characterized in that, include: The base station body (100) has a receiving cavity (101). A blower (200) having at least one and disposed within the receiving cavity (101), the blower (200) partially protruding from the outside of the base station body (100); A fan assembly (300) has at least one fan assembly disposed within the receiving cavity (101), the fan assembly (300) is fixedly connected to the base station body (100), and the fan assembly (300) is connected to the blower (200) via a pipeline; the fan assembly (300) includes a rotary drive assembly (320), an impeller (330), and a guide cone (340), the impeller (330) is disposed at the power output end of the rotary drive assembly (320), the rotary drive assembly (320) is used to drive the impeller (330) to rotate, and the guide cone (340) is disposed on the side of the impeller (330) away from the rotary drive assembly (320).

2. The lawnmower pneumatic cleaning base station according to claim 1, characterized in that, The cross-sectional area of ​​the guide cone (340) gradually decreases along the direction of the airflow blown by the impeller (330), the guide cone (340) is conical, and the taper of the guide cone (340) is between 30° and 80°.

3. The lawnmower pneumatic cleaning base station according to claim 1, characterized in that, The fan assembly (300) further includes a shroud (310), which has an air outlet chamber (301). The rotary drive assembly (320) is connected to the shroud (310), and the impeller (330) is located inside the air outlet chamber (301). The shroud (310) includes a mounting portion (311), a transition portion (312), and an exhaust portion (313). The mounting portion (311) has a first chamber (3101), and the impeller (330) is located in the first chamber (3101). 1) Inside, the transition part (312) is disposed at one end of the mounting part (311), and the exhaust part (313) is disposed at the end of the transition part (312) away from the mounting part (311). The exhaust part (313) is provided with a second chamber (3102). The first chamber (3101) communicates with the second chamber (3102) to form the air outlet chamber (301). The exhaust part (313) is provided with at least one air outlet (3130) communicating with the second chamber (3102).

4. The pneumatic cleaning base station for lawnmowers according to claim 3, characterized in that, The exhaust section (313) is circular or rectangular.

5. The lawnmower pneumatic cleaning base station according to claim 3, characterized in that, The rotary drive assembly (320) includes a rotary drive component (321) and a bracket (322). The bracket (322) is connected to the shroud (310), and a portion of the bracket (322) is located within the air outlet cavity (301). The rotary drive component (321) is fixedly connected to the bracket (322). The power output shaft of the rotary drive component (321) extends into the air outlet cavity (301) and is connected to the impeller (330).

6. The lawnmower pneumatic cleaning base station according to claim 5, characterized in that, The bracket (322) includes a housing (3221), a mounting bracket (3222), and a guide plate (3223). The housing (3221) is connected to the hood (310) and is partially located inside the air outlet cavity (301). The housing (3221) is provided with an air inlet cavity (32210). The mounting bracket (3222) is provided inside the air inlet cavity (32210). The mounting bracket (3222) is provided with a plurality of evenly spaced guide plates (3223) on its circumference. The end of the guide plate (3223) away from the mounting bracket (3222) is connected to the inner wall of the air inlet cavity (32210).

7. The lawnmower pneumatic cleaning base station according to claim 6, characterized in that, The mounting bracket (3222) includes a mounting shell (32221) and an end plate (32222). The mounting shell (32221) is connected to each of the guide plates (3223). The end plate (32222) is provided at one end of the mounting shell (32221) facing the impeller (330). The mounting shell (32221) and the end plate (32222) enclose a mounting cavity (32223). The rotary drive (321) is disposed in the mounting cavity (32223), and the power output shaft of the rotary drive (321) passes through the end plate (32222) and is connected to the impeller (330).

8. The lawnmower pneumatic cleaning base station according to claim 7, characterized in that, The mounting housing (32221) has multiple through slots (32224) on its side wall. The through slots (32224) are located between two adjacent mounting cavities (32223) to connect the mounting cavity (32223) with the air inlet cavity (32210).

9. The lawnmower pneumatic cleaning base station according to claim 6, characterized in that, The guide plate (3223) protrudes from the outer casing (3221) on the side opposite to the impeller (330).

10. The lawnmower pneumatic cleaning base station according to claim 6, characterized in that, The bracket (322) also includes a connecting ear (3224), and there are multiple connecting ears (3224). The multiple connecting ears (3224) are evenly spaced on the periphery of the outer shell (3221), and the connecting ears (3224) are connected to the base station body (100).

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