Airflow apparatus, and blower and vacuum

Abstract

An airflow apparatus (10), and a blower and vacuum (20). The airflow apparatus (10) comprises: an electric motor; a fan assembly driven by the electric motor to rotate to generate negative pressure; an air suction tube (711) for using the negative pressure to suction in substances to be suctioned in; and an air blowing port (102) mounted on a collection device (750). The airflow apparatus (10) further comprises a blocking part (911), wherein the blocking part (911) divides said substances into a first portion and a second portion, the first portion directly falling into the collection device (750), and the second portion being blocked by the blocking part (911).

Description

Airflow equipment and blower suction machines

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on August 28, 2023, with application number 202322331729.4, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to an airflow device, for example, a fallen leaf collecting device or a blower-suction machine. Background Art

[0003] A blower-suction machine in the related art collects fallen leaves by generating suction, and the collected fallen leaves are then transferred to a collection device for centralized processing.

[0004] Related art blowers typically use a rigid tube to absorb fallen leaves. The tube collects the leaves into the blower's built-in leaf bag, which is then manually transferred to a collection device. Finally, the collection device and its contents are moved to a leaf recycling station. Directly connecting the blower to the collection device presents several issues: 1. Because the collection device is airtight or has poor air permeability, airflow carrying fallen leaves can blow the collection device away or explode. 2. Some sucked-in branches or stones are sharp, and a direct impact with the collection device could break it.

[0005] This section provides background information related to the present application which is not necessarily prior art.

[0006] Summary of the Invention

[0007] This application adopts the following technical solutions:

[0008] An airflow device includes: a motor; a fan assembly, which is driven by the motor to rotate and generate negative pressure; a suction cylinder, which uses the negative pressure to absorb inhaled matter; and an air outlet, which is installed on a collection device; the airflow device also includes a blocking part, which divides the inhaled matter into a first part and a second part, the first part directly falls into the collection device, and the second part is blocked by the blocking part.

[0009] In some embodiments, the airflow device further includes a dust and gas separation device, the airflow flows from the suction cylinder and flows into the dust and gas separation device through the blowing port; the blocking part is arranged in the dust and gas separation device.

[0010] In some embodiments, the airflow device further comprises a support frame configured to support the collection device.

[0011] In some embodiments, the support frame includes a support sleeve and multiple support rods. The support sleeve is mounted and fixed at the collection port of the collection device. The multiple support rods are arranged at intervals along the circumference of the support sleeve, and the top end of each support rod is connected to the support sleeve.

[0012] In some embodiments, the dust and gas separation device is detachably connected to the support sleeve.

[0013] In some embodiments, the dust and gas separation device includes a mounting port, and the air outlet is installed in the mounting port.

[0014] In some embodiments, the dust and gas separation device further includes a main body connected to the blocking portion, wherein the main body and the blocking portion form a receiving space, and the inhaled material first enters the receiving space from the installation port, and at least part of the inhaled material is blocked by the blocking portion.

[0015] In some embodiments, the blocking portion is capable of blocking the inhaled object with a length greater than 5 cm.

[0016] In some embodiments, the blocking portion includes a solid portion and a plurality of hollow portions, wherein the plurality of hollow portions are circumferentially spaced around the solid portion. The solid portion is configured to block the inhaled object, and the hollow portion is configured to allow the inhaled object to pass through.

[0017] In some embodiments, the support frame is non-detachably connected to the airflow device.

[0018] In some embodiments, the airflow device is a blower-suction machine; or, the airflow device is a garden leaf vacuum machine.

[0019] A blower-suction machine includes: a motor; a fan assembly, which is driven by the motor to rotate and generate negative pressure; a suction cylinder, which uses the negative pressure to suck in the suction; and a blowing port, which is installed on a collection device; the blower-suction machine has a blowing mode and a suction mode; the blower-suction machine also includes a blocking part, which divides the suction into a first part and a second part, the first part directly falls into the collection device, and the second part is blocked by the blocking part.

[0020] In some embodiments, the blower-suction machine further includes a dust and gas separation device, and the air flow flows from the suction cylinder and into the dust and gas separation device through the blowing port; the blocking part is arranged in the dust and gas separation device.

[0021] In some embodiments, the blower-vacuum machine further comprises a support frame configured to support the collecting device.

[0022] In some embodiments, the support frame includes a support sleeve and multiple support rods. The support sleeve is mounted and fixed at the collection port of the collection device. The multiple support rods are arranged at intervals along the circumference of the support sleeve, and the top end of each support rod is connected to the support sleeve.

[0023] In some embodiments, the dust and gas separation device is detachably connected to the support sleeve.

[0024] In some embodiments, the dust and gas separation device includes a mounting port, and the air outlet is mounted to the mounting port.

[0025] In some embodiments, the dust and gas separation device further includes a main body connected to the blocking portion, the main body and the blocking portion form a receiving space, the inhaled material first enters the receiving space from the installation port, and at least part of the inhaled material is blocked by the blocking portion.

[0026] In some embodiments, the blocking portion includes a solid portion and a plurality of hollow portions, wherein the plurality of hollow portions are circumferentially spaced around the solid portion. The solid portion is configured to block the inhaled matter, and the hollow portion is configured to allow the inhaled matter to pass through. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] FIG1 is an assembly diagram of the airflow device and the collection device provided by the present application;

[0028] FIG2 is an exploded view of the airflow device and the collection device provided by the present application;

[0029] FIG3 is an exploded view of a portion of the structure of the airflow device provided by the present application;

[0030] FIG4 is a schematic diagram of the dust and gas separation equipment provided by the present application;

[0031] FIG5 is a schematic diagram of the airflow device provided by the present application sucking fallen leaves into a collection device;

[0032] FIG6 is a schematic diagram of the blower-suction machine provided in the present application;

[0033] FIG7 is a side view of the blower-suction machine provided by the present application;

[0034] FIG8 is an exploded schematic diagram of the blower-suction machine provided in the present application. DETAILED DESCRIPTION

[0035] Before any embodiments of the present application are explained in detail, it is to be understood that the application is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the foregoing drawings.

[0036] In this application, the terms "comprises," "includes," "has," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0037] In this application, the term "and / or" describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Additionally, the character " / " in this application generally indicates that the related objects are in an "and / or" relationship.

[0038] In this application, the terms "connect," "combine," "couple," and "install" may refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without an intermediary, and an indirect connection refers to two parts or components being connected to at least one intermediary, with the two parts or components being connected via the intermediary. Furthermore, "connect" and "couple" are not limited to physical or mechanical connections or couplings and may include electrical connections or couplings.

[0039] In this application, it will be understood by those skilled in the art that relative terms (e.g., "about," "approximately," "substantially," etc.) used in conjunction with quantities or conditions include the values ​​and have the meaning indicated by the context. For example, the relative terms include at least the degree of error associated with the measurement of a specific value, the tolerance caused by manufacturing, assembly, use, etc. associated with a specific value. Such terms should also be considered to disclose a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to plus or minus a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​that do not use relative terms should also be disclosed as specific values ​​with tolerances. In addition, "substantially" may refer to plus or minus a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) on the basis of the indicated angle when expressing a relative angular position relationship (e.g., substantially parallel, substantially perpendicular).

[0040] In this application, it will be understood by those skilled in the art that the function performed by an assembly can be performed by one assembly, multiple assemblies, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one assembly, or a combination of multiple parts.

[0041] In the present application, the terms "upper", "lower", "left", "right", "front", "back" and other directional words are described based on the orientation and positional relationship shown in the accompanying drawings, and should not be understood as limiting the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to the other element "upper" or "lower", but also be indirectly connected to the other element "upper" or "lower" through an intermediate element. It should also be understood that directional words such as upper side, lower side, left side, right side, front side, back side, etc. not only represent the positive orientation, but can also be understood as the lateral orientation. For example, below can include directly below, lower left, lower right, lower front and lower back, etc.

[0042] The present application provides an airflow device 10 configured to generate airflow to absorb and collect light objects such as fallen leaves, allowing the fallen leaves and other light objects to fall smoothly into a collection device 750. In some embodiments, the airflow device 10 is a blower; in other embodiments, the airflow device 10 is a garden leaf vacuum or a fallen leaf collection device.

[0043] In one embodiment, the collection device 750 may be a kraft paper bag, a cloth bag, a collection bucket or a collection box.

[0044] As shown in Figures 1 to 4, the airflow device 10 includes a housing 100, a motor (not shown), a fan assembly, a suction tube 711, an air outlet 102, and a dust and gas separation device 910. The housing 100 is the main container and mounting component of the airflow device 10, and a mounting cavity is formed in the housing 100. The motor is installed in the mounting cavity, and the fan assembly is connected to the motor shaft of the motor. Driven by the motor, the motor shaft rotates and synchronously drives the fan assembly to rotate. The rotation of the fan assembly generates negative pressure, thereby providing power for the airflow device 10 to absorb fallen leaves, etc. The suction tube 711 uses negative pressure to absorb inhaled objects, which include but are not limited to fallen leaves, dust, branches, pebbles, etc. The following description uses fallen leaves as the inhaled objects. Specifically, one end of the suction tube 711 is connected to the housing 100, and the other end forms a suction port for sucking fallen leaves. The suction tube 711 is connected to the mounting cavity, and the motor can generate negative pressure at the suction port, so that fallen leaves enter the suction tube 711 through the suction port. The housing 100 is formed with an air outlet 102 that communicates with the air suction cylinder 711. The air outlet 102 is mounted to the collection device 750, allowing fallen leaves that enter the air suction cylinder 711 to enter the collection device 750 through the air outlet 102. The dust and gas separation device 910 is disposed between the air outlet 102 and the collection device 750. Air flows from the air suction cylinder 711 and flows through the air outlet 102 into the dust and gas separation device 910.

[0045] In one embodiment, the dust and gas separation device 910 includes a blocking portion 911, which divides the inhaled matter into a first part and a second part. The first part falls directly into the collection device 750, and the second part is blocked by the blocking portion 911 and then falls into the collection device 750.

[0046] In one embodiment, the airflow device 10 includes a blocking portion 911, which is disposed at the air outlet 102 of the airflow device 10. In one embodiment, the blocking portion 911 is disposed within the collection device 750. In other words, the blocking portion 911 is present in the airflow device 10, but does not necessarily need to be present in the dust and gas separation device 910.

[0047] Before using the airflow device 10 to absorb fallen leaves, the fallen leaves scattered everywhere are generally piled up so that they can be uniformly absorbed by the airflow device 10. When piling up the fallen leaves, it is inevitable that branches, stones and other sharp objects will be mixed into the fallen leaves pile. The airflow device 10 is provided with a blocking portion 911 on the dust and gas separation device 910. The blocking portion 911 can block part of the inhaled objects, especially sharp objects such as branches and stones, so that the speed at which the inhaled objects enter the collection device 750 is slowed down, reducing the probability of the inhaled objects damaging the collection device 750, making the collection device 750 not easily scratched or even punctured, and extending the service life of the collection device 750.

[0048] In some embodiments, the blocking portion 911 can block inhaled objects with a length greater than 5 cm. It should be noted that the length of the inhaled object here refers to the maximum length between any two points on the inhaled object, such as the longest length of a tree branch.

[0049] In one specific embodiment, the blocking portion 911 can block an inhaled object with a length of 6 cm; in another specific embodiment, the blocking portion 911 can block an inhaled object with a length of 7 cm; and in another specific embodiment, the blocking portion 911 can block an inhaled object with a length of 8 cm. The length of the inhaled object that the blocking portion 911 can block can be designed according to actual needs and is not limited to the above limitations.

[0050] 3 and 4 , the blocking portion 911 includes a solid portion 9111 and a plurality of hollow portions 9112. The plurality of hollow portions 9112 are spaced apart circumferentially around the solid portion 9111. The solid portion 9111 is configured to block inhaled matter, while the hollow portions 9112 are configured to allow inhaled matter to pass through. In one specific embodiment, the solid portion 9111 is disc-shaped.

[0051] In one embodiment, the blocking portion 911 further includes a plurality of interconnecting portions 9113, each of which is in the shape of an elongated plate. The plurality of interconnecting portions 9113 are radially arranged around the circumference of the solid portion 9111, one end of the interconnecting portion 9113 is connected to the solid portion 9111, and the other end is connected to the main body 914 of the dust and gas separation device 910. A hollow portion 9112 is formed between two adjacent interconnecting portions 9113. In some embodiments, the hollow portion 9112 is fan-shaped. In some embodiments, the dust and gas separation device 910 further includes a main body 914 connected to the blocking portion 911, the main body 914 and the blocking portion 911 form a storage space, and the inhaled material first enters the storage space through the installation port 912, and at least part of the inhaled material is blocked by the blocking portion 911. To prevent the collection device 750 from being broken, a plurality of air holes 913 are formed on the main body 914 to allow air circulation.

[0052] In one embodiment, the main body 914 is a lid-like structure with an open bottom. The main body 914 includes a top plate and a circumferential, downwardly projecting side portion surrounding the top plate. The side portion may be a solid plate with air holes 913 provided thereon. Alternatively, the side plate may be a wire mesh structure, with the mesh serving as the air holes 913. The provision of air holes 913 on the side portion of the main body 914 allows fallen leaves to easily enter the collection device 750, and air drawn into the suction cylinder 711 along with the fallen leaves can then flow out through the air holes 913.

[0053] In some specific embodiments, the main body 914 of the dust and gas separation device 910 is substantially in the shape of a cube; in some parallel embodiments, the main body 914 of the dust and gas separation device 910 is substantially in the shape of a cylinder. The shape of the main body 914 is not limited.

[0054] The dust and gas separation device 910 includes a mounting port 912 into which the air blowing port 102 is inserted. In one embodiment, the mounting port 912 is located on the top of the main body 914. In one embodiment, the mounting port 912 is located on the top plate of the main body 914.

[0055] In some embodiments, the mounting opening 912 includes a foolproof recess 9121, and the air outlet 102 includes a foolproof protrusion 1021, which is inserted into the foolproof recess 9121. The foolproof recess 9121 and the foolproof protrusion 1021 can be provided on the mounting opening 912 or the air outlet 102, respectively, as long as the mounting opening 912 and the air outlet 102 can be assembled with each other through the concave and convex structures.

[0056] In one embodiment, there are two foolproof recesses 9121, each disposed on two opposing side walls of the mounting opening 912, forming a roughly cross-shaped portion. Correspondingly, the air outlet 102 includes two opposing foolproof protrusions 1021, forming a roughly cross-shaped portion. The two foolproof protrusions 1021 are inserted into the foolproof recesses 9121 in a one-to-one correspondence.

[0057] Of course, in some other embodiments, the installation port 912 and the blowing port 102 can also be set to other compatible shapes according to needs, such as T-shape, π-shape, etc.

[0058] Continuing with reference to Figure 1, in some embodiments, the suction tube 711 is a hose with a smooth inner wall, which is easy to store. In some specific embodiments, the suction tube 711 is a bellows structure, specifically including a spiral support bar configured for support and a soft ventilation material covering the spiral support bar. The soft ventilation material can be cotton cloth or plastic cloth, etc. The use of soft ventilation material can not only block objects such as fallen leaves in the suction tube 711, but also play a ventilation role. The suction tube 711 with a hose structure can be used for various airflow devices 10 that can blow or inhale air, such as a handheld hair dryer, a backpack hair dryer, a blower and suction machine, a vacuum cleaner, etc.

[0059] Of course, in other embodiments, due to varying user habits and to reduce suction loss due to hose resistance, the hose can also be configured with a fixed, wide air intake. The rake sweeps the fallen leaves together, and the black air intake draws them in. Because the air intake is a fixed shape, rather than a flexible structure that easily deforms, it reduces airflow loss caused by the curvature and fluctuations of the bellows' inner wall. Because the inner wall is uneven, the wind loses some energy in overcoming the resistance of the inner wall.

[0060] 1, 2 and 5, the airflow device 10 further includes a support frame 920, which is configured to support the collection device 750. This eliminates the need for the user to hold the collection device 750, thereby freeing up a certain amount of labor.

[0061] In some embodiments, the support frame 920 includes a support sleeve 921 and multiple support rods 922. The support sleeve 921 is mounted and fixed at the collection port of the collection device 750. The multiple support rods 922 are arranged at circumferential intervals along the support sleeve 921, and the top end of each support rod 922 is connected to the support sleeve 921.

[0062] In some specific embodiments, the support rods 922 are tilted outward from top to bottom, so that the cross-sectional area of ​​the space formed by multiple support rods 922 gradually increases from top to bottom, thereby improving the support stability of the support frame 920 on the collection device 750.

[0063] In one embodiment, a connecting rod 923 is further provided between two adjacent support rods 922. The connecting rod 923 is horizontally arranged and is configured to strengthen the structural stability of the support frame 920, thereby further improving the support stability of the support frame 920 for the collection device 750.

[0064] In one embodiment, the support frame 920 can be directly supported on the airflow device 10, so that the airflow device 10 (such as a blower) can "stand" independently when working in the suction mode, without the need for the user to support it with his hands. For a leaf-dropping machine, the blower does not have the function of blowing air, and the support frame 920 can be set as one piece with the leaf-dropping machine, that is, the support frame 920 and the leaf-dropping machine are non-detachably connected. For a blower, the blower has a blowing mode and a suction mode, and the support frame 920 can be set to a detachable connection with the blower. When the blower is used in the blowing mode, the user can hold the blower by hand. When the blower is operated in the suction mode, the user can hold it by hand or use the support frame 920 to support the blower. The specific method of support by hand or by the support frame 920 depends on the working conditions of the blower.

[0065] In a specific embodiment, the support sleeve 921 is a square ring sleeve, the number of the support rods 922 is four, and the number of the connecting rods 923 is also four.

[0066] In some embodiments, the dust and gas separation device 910 is detachably connected to the support sleeve 921. The detachable connection method includes plug-in connection, snap connection, magnetic attraction, etc.

[0067] It should be noted that the airflow device 10 can be directly placed and fixed on the support frame 920 for use. In this case, the airflow device 10 can be used as a relatively fixed device. Of course, when the airflow device 10 is not supported by the support frame 920, the airflow device 10 can still be used as a traditional handheld airflow device 10.

[0068] 1 , to facilitate the user's holding of the airflow device 10, the airflow device 10 further includes a main handle 610 and a secondary handle 640. The main handle 610 is connected to the top of the housing 100, and the secondary handle 640 is connected to the rear of the housing 100. The user can easily operate the airflow device 10 by holding the main handle 610 with one hand and the secondary handle 640 with the other hand.

[0069] Continuing with FIG1 , the airflow device 10 further includes a battery pack 800. A plug-in structure is provided at the rear of the housing 100, into which the battery pack 800 is removably plugged. In some embodiments, the plug-in direction of the battery pack 800 is angled with the vertical direction, making it easier for the user to remove and install the battery pack 800.

[0070] Figures 6 to 8 are schematic diagrams of a blower-vacuum machine 20. The blower-vacuum machine 20 has at least two operating modes: a blowing mode and a suction mode. The blower-vacuum machine 20 can use the blowing mode to collect scattered objects such as leaves, or it can use the suction mode to suck the leaves into a designated garbage collection device, thereby achieving the desired cleaning effect.

[0071] The housing 100 includes a main body shell 110, an air inlet 101a and an air outlet 102a, and the motor 200 and the fan assembly 410 are arranged in the main body shell 110. The air inlet 101a is arranged on the front side of the main body shell 110, and the air outlet 102a is arranged on the lower side of the main body shell 110.

[0072] The blower-vacuum machine 20 also includes a suction assembly 710, which includes a suction cylinder 711a. The suction cylinder 711a is detachably mounted on the suction port 101a. The blower-vacuum machine also includes a connecting portion 720 and a conversion member 730. The connecting portion 720 is detachably mounted on the blowing port 102a. When the conversion member 730 is assembled with the connecting portion 720, the conversion member 730 can be configured to accommodate a collection bag 740. The collection bag 740 is configured to store objects sucked in by the suction cylinder 711. The conversion member 730 has a collection port 731 for collecting the sucked-in objects. In one embodiment, the collection bag 740 of the blower-vacuum machine 710 can be removed, allowing the blowing port 102a to be connected to the dust and gas separation device 910, thereby enabling use in the manner disclosed in Figures 1 to 5. It should be noted that the technical solutions described in this application may be applied to different airflow devices 10, such as a handheld hair dryer, a backpack hair dryer, or a blower-suction machine with a blowing mode. When this application refers to "airflow device 10", it is not limited to any type of airflow device 10. As long as a device performs work through the flow of air, it can be called "airflow device 10". The "hair dryer" involved in this application is not limited to a handheld hair dryer, a backpack hair dryer, or a blower-suction machine with a blowing mode. Therefore, when referring to "hair dryer", it should be understood as a general term for various types of hair dryers, unless a specific type of hair dryer is specifically specified in the text.

[0073] The above shows and describes the basic principles, main features and advantages of this application. Those skilled in the art should understand that the above embodiments do not limit this application in any form, and any technical solutions obtained by equivalent replacement or equivalent transformation fall within the scope of protection of this application.

Claims

1. An air flow device, comprising: Motor; A fan assembly, driven by the motor to rotate and generate negative pressure; A suction cylinder uses negative pressure to suck up the inhaled material; An air outlet mounted to the collecting device; The airflow device further comprises a blocking portion, which divides the inhaled material into a first portion and a second portion, wherein the first portion falls directly into the collecting device and the second portion is blocked by the blocking portion.

2. The airflow device according to claim 1 further comprises a dust and gas separation device, the airflow flows in from the suction cylinder and flows into the dust and gas separation device through the blowing port; the blocking part is arranged in the dust and gas separation device.

3. The airflow device according to claim 2 further comprises a support frame, wherein the support frame is configured to support the collection device.

4. The airflow device according to claim 3, wherein: The support frame includes a support sleeve and a plurality of support rods. The support sleeve is sleeved and fixed at the collecting port of the collecting device. The plurality of support rods are spaced apart along the circumference of the support sleeve, and the top end of each support rod is connected to the support sleeve.

5. The airflow device according to claim 4, wherein: The dust and gas separation device is detachably connected in the support sleeve.

6. The airflow device according to claim 2, wherein: The dust and gas separation device comprises a mounting port, and the air blowing port is mounted to the mounting port.

7. The airflow device according to claim 6, wherein: The dust and gas separation device also includes a main body connected to the blocking part, wherein the main body and the blocking part form a containing space, and the inhaled material first enters the containing space through the installation port, and at least part of the inhaled material is blocked by the blocking part.

8. The airflow device of claim 1, wherein: The blocking portion can block the inhaled object having a length greater than 5 cm.

9. The airflow device of claim 1, wherein: The blocking portion includes a solid portion and a plurality of hollow portions, wherein the plurality of hollow portions are arranged at intervals in the circumferential direction around the solid portion, the solid portion is arranged to block the inhaled object, and the hollow portion is arranged to allow the inhaled object to pass through.

10. The airflow device of claim 3, wherein: The support frame is inseparably connected to the airflow device.

11. The airflow device according to any one of claims 1 to 9, wherein: The air flow equipment is a blowing and suction machine.

12. The airflow device according to any one of claims 1 to 9, wherein: The airflow device is a garden leaf sucker.

13. A blowing and suction machine, comprising: Motor; A fan assembly, driven by the motor to rotate and generate negative pressure; A suction cylinder uses negative pressure to suck up the inhaled material; An air outlet mounted to the collecting device; in, The blowing and suction machine has a blowing mode and a suction mode; The blowing and suction machine further comprises a blocking portion, which divides the inhaled material into a first part and a second part, wherein the first part directly falls into the collecting device and the second part is blocked by the blocking portion.

14. The blowing and suction machine according to claim 13, further comprising a dust and gas separation device, wherein an airflow flows in from the suction cylinder and flows into the dust and gas separation device through the blowing port; and the blocking portion is arranged in the dust and gas separation device.

15. The blower-vacuum machine according to claim 14, further comprising a support frame, wherein the support frame is configured to support the collecting device.

16. The blowing-vacuum machine according to claim 15, wherein: The support frame includes a support sleeve and a plurality of support rods. The support sleeve is sleeved and fixed at the collecting port of the collecting device. The plurality of support rods are spaced apart along the circumference of the support sleeve, and the top end of each support rod is connected to the support sleeve.

17. The blowing-vacuum machine according to claim 16, wherein: The dust and gas separation device is detachably connected in the support sleeve.

18. The blower-vacuum machine according to claim 14, wherein: The dust and gas separation device comprises a mounting port, and the air blowing port is mounted to the mounting port.

19. The blower-vacuum machine according to claim 18, wherein: The dust and gas separation device also includes a main body connected to the blocking part, wherein the main body and the blocking part form a containing space, and the inhaled material first enters the containing space through the installation port, and at least part of the inhaled material is blocked by the blocking part.

20. The blower-vacuum machine according to claim 13, wherein: The blocking portion includes a solid portion and a plurality of hollow portions, wherein the plurality of hollow portions are arranged at intervals in the circumferential direction around the solid portion, the solid portion is arranged to block the inhaled object, and the hollow portion is arranged to allow the inhaled object to pass through.

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