Blowing and sucking integrated air duct conversion device and blowing and sucking integrated machine

Abstract

The utility model provides a blowing and suction integrated air duct conversion device and a blowing and suction integrated machine, and relates to the technical field of blowing and suction integrated machines. The device comprises an air suction shell, an air blowing shell, a rotating ring and a fixing frame, the rotating ring and the fixing frame are located between the air suction shell and the air blowing shell, a first matching part is arranged on the side, close to the rotating ring, of the air suction shell, a second matching part and a third matching part are arranged on the two sides of the rotating ring respectively, and a fourth matching part is arranged on the side, close to the rotating ring, of the air blowing shell. The rotating ring and the fixing frame are jointly provided with an adjusting mechanism, the adjusting mechanism can drive the rotating ring to move in the axial direction relative to the fixing frame, and the moving process is smoother. The air suction function and the air blowing function are switched by switching contact and separation of the rotating ring, the air suction shell and the air blowing shell, the die cost is reduced, the good sealing effect can be achieved, meanwhile, the part machining precision can be reduced, the production cost is reduced, die production is simpler, and assembling is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of blow-suction integrated machines, in particular to a blow-suction integrated air duct conversion device and a blow-suction integrated machine. Background Art

[0002] A blow-suction integrated machine is a tool for pet hair grooming. One end of the blow-suction integrated machine is a suction end, which can suck away the floating hair on the pet, and the other end is a blowing end with a heating function, which can dry the water on the pet after bathing.

[0003] Most of the blow-suction integrated machines sold on the market at present have relatively complex structures, unreliable operations, and high production costs. Taking the utility model patent with the application number CN202222930726.8 as an example, it consists of an inner and an outer shell. Ventilation holes are respectively opened on the inner and outer layers, which are staggered. By rotating the inner shell along the axis, the relative positions of the air outlets on the inner and outer shells are changed, so as to realize the function switching between the air outlet chamber and the suction chamber.

[0004] The applicant of the present invention has found that there are at least the following technical problems in the prior art: the above product consists of an inner shell and an outer shell, and both the inner shell and the outer shell are side-drawing core molds, with high mold costs; the sealing performance of the product is determined by the matching accuracy of the inner shell and the outer shell, and high processing accuracy is required; the product consists of an inner shell and an outer shell, with many components and high production costs. Summary of the Utility Model

[0005] The purpose of the present invention is to provide a blow-suction integrated air duct conversion device and a blow-suction integrated machine to solve the technical problems existing in the prior art. The many technical effects that can be produced by the preferred technical solutions provided by the present invention are described in detail below.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A blow-suction integrated air duct conversion device includes a suction housing, a blowing housing, a rotating ring, and a fixing frame. The rotating ring and the fixing frame are located between the suction housing and the blowing housing. A first matching part is arranged on one side of the suction housing close to the rotating ring. A second matching part and a third matching part are respectively arranged on both sides of the rotating ring. A fourth matching part is arranged on one side of the blowing housing close to the rotating ring. An adjusting mechanism is jointly arranged on the rotating ring and the fixing frame. The adjusting mechanism can drive the rotating ring to move axially relative to the fixing frame. When the rotating ring moves axially to the limit position, the first matching part and the second matching part cooperate with each other to form a tight fit, or the third matching part and the fourth matching part cooperate with each other to form a tight fit.

[0008] Preferably, the first mating part, the second mating part, the third mating part, and the fourth mating part all have mating surfaces. The mating surface of the first mating part is complementarily mated with the mating surface of the second mating part, and the mating surface of the third mating part is complementarily mated with the mating surface of the fourth mating part.

[0009] Preferably, the mating surfaces on the first mating part, the second mating part, the third mating part, and the fourth mating part are all annularly arranged inclined surfaces. The inclined surface of the first mating part matches the inclined surface of the second mating part, and the inclined surface of the third mating part matches the inclined surface of the fourth mating part.

[0010] Preferably, the adjusting mechanism includes a handle and / or a spiral rib provided on the outer wall of the rotating ring, and a handle groove and / or a spiral groove opened on the inner wall of the fixing frame. The handle can slide relatively inside the handle groove under the action of an external force, and the spiral rib can slide relatively inside the spiral groove.

[0011] Preferably, the setting position of the handle on the outer wall of the rotating ring is located at one end of the axis of the rotating ring. The fixing frame is provided with an installation relief groove at one end of each spiral groove. The installation relief groove communicates with the spiral groove, and the spiral rib can enter the spiral groove from the installation relief groove.

[0012] Preferably, the number of the handle grooves is the same as that of the handles and their positions correspond to each other, and the number of the spiral grooves is the same as that of the spiral ribs and their positions correspond to each other.

[0013] Preferably, it further includes a handle cap. The handle cap is connected to the handle. The fixing frame is provided with two first limiting structures, and the two first limiting structures respectively correspond to the two extreme positions when the rotating ring moves. The handle cap is provided with two second limiting structures. When the handle cap and the rotating ring move to one of the extreme positions, the first limiting structure corresponding to this extreme position can form a limit with the corresponding second limiting structure.

[0014] Preferably, the first limiting structure is a limiting groove, and the second limiting structure is a limiting rib. The limiting rib can fall into the limiting groove. When the handle cap and the rotating ring move to one of the extreme positions, the limiting groove corresponding to this extreme position can form a limit with the corresponding limiting rib.

[0015] Preferably, it further includes a motor assembly and a heating assembly. The air suction housing, the fixing bracket, and the air blowing housing jointly cover the outside of the motor assembly. The motor assembly is used to drive the air flow. One end of the air blowing housing away from the fixing bracket is connected to the heating assembly, and the heating assembly is used to adjust the temperature of the air flow.

[0016] A blowing and suction integrated machine includes the above-mentioned blowing and suction integrated air duct conversion device.

[0017] The beneficial effects of the present invention are as follows: An adjusting mechanism is jointly provided on the rotating ring and the fixing bracket. The adjusting mechanism can drive the rotating ring to rotate relative to the fixing bracket, and while rotating, perform a linear movement along the axial direction. The rotating ring has two limit positions when moving along the axial direction;

[0018] When the rotating ring is at one of the limits, the first mating part and the second mating part can cooperate with each other to form a tight fit. At this time, the air suction housing, the rotating ring, and the motor assembly can enclose to form a closed air suction cavity. When the rotating ring is at the other limit, the third mating part and the fourth mating part can cooperate with each other to form a tight fit. At this time, the rotating ring, the air blowing housing, and the motor assembly can enclose to form a closed air blowing cavity;

[0019] The rotating ring moves relative to the fixing bracket, converting the rotational movement into a linear movement along the axial direction. The movement process is smoother. By switching the contact and separation between the rotating ring and the air suction housing and the air blowing housing, the switching between the air suction function and the air blowing function is realized;

[0020] Compared with the prior art, the blowing and suction integrated air duct conversion device reduces two air separation sleeve parts that require side core pulling of the mold, reducing the mold cost. And through mutual cooperation to form a tight fit, a good sealing effect can be achieved. At the same time, it can also reduce the machining accuracy of parts, reducing the production cost. The mold production is simpler and the assembly is convenient. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a detailed structure diagram of the air suction housing, the air blowing housing, and the rotating ring of the present invention, in which the first mating part and the second mating part can cooperate with each other to form a tight fit, and the air suction housing, the rotating ring, and the motor assembly can enclose to form a closed air suction cavity;

[0023] Figure 2The figure is a detailed structural diagram of the air suction housing, air blowing housing and rotating ring of the present utility model. Among them, the third fitting part and the fourth fitting part can cooperate with each other to form a tight fit, and the rotating ring, the air blowing housing and the motor assembly can enclose to form a closed air blowing cavity;

[0024] Figure 3 The figure is a sectional structural diagram of the air suction housing, air blowing housing and rotating ring of the present utility model. Among them, the first fitting part and the second fitting part cooperate with each other to form a tight fit, and the first fitting part and the second fitting part are inclined plane structures;

[0025] Figure 4 The figure is a sectional structural diagram of the air suction housing, air blowing housing and rotating ring of the present utility model. Among them, the third fitting part and the fourth fitting part cooperate with each other to form a tight fit, and the third fitting part and the fourth fitting part are inclined plane structures;

[0026] Figure 5 The figure is a structural diagram of the blowing and suction integrated air duct conversion device of the present utility model;

[0027] Figure 6 The figure is a detailed structural diagram of the rotating ring and the fixing bracket of the present utility model;

[0028] Figure 7 The figure is a detailed structural diagram of the rotating ring of the present utility model;

[0029] Figure 8 The figure is a detailed structural diagram of the fixing bracket of the present utility model;

[0030] Figure 9 The figure is a detailed structural diagram of the second embodiment of the present utility model;

[0031] Figure 10 The figure is a structural diagram of the blowing and suction integrated machine of the third embodiment of the present utility model;

[0032] In the figure, 1 is the air suction housing; 11 is the first fitting part;

[0033] 2 is the air blowing housing; 21 is the fourth fitting part;

[0034] 3 is the rotating ring; 31 is the second fitting part; 32 is the third fitting part; 33 is the handle; 34 is the spiral rib;

[0035] 4 is the fixing bracket; 41 is the handle groove; 42 is the spiral groove; 43 is the installation relief groove; 44 is the first limiting structure;

[0036] 5 is the handle cap; 51 is the second limiting structure;

[0037] 6 is the motor assembly;

[0038] 7 is the heating assembly. Detailed implementation manners

[0039] To make the objectives, technical solutions, and advantages of the present utility model clearer, the following will provide a detailed description of the technical solutions of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other implementation manners obtained by those of ordinary skill in the art without creative efforts fall within the scope protected by the present utility model.

[0040] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "center", "lateral", "length", "width", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "side", etc. are based on the Figure 1 orientation or positional relationships shown, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0041] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0042] Embodiment 1

[0043] Referring to Figures 1 to 8 , the present utility model provides a blowing and suction integrated air duct conversion device, including a suction housing 1, a blowing housing 2, a rotating ring 3, and a fixing bracket 4. The rotating ring 3 and the fixing bracket 4 are located between the suction housing 1 and the blowing housing 2. A first mating portion 11 is provided on one side of the suction housing 1 close to the rotating ring 3. Second mating portions 31 and third mating portions 32 are respectively provided on both sides of the rotating ring 3. A fourth mating portion 21 is provided on one side of the blowing housing 2 close to the rotating ring 3;

[0044] An adjusting mechanism is jointly provided on the rotating ring 3 and the fixing bracket 4. The adjusting mechanism can drive the rotating ring 3 to rotate relative to the fixing bracket 4 and perform a linear movement along the axial direction while rotating. The rotating ring 3 has two limit positions when moving along the axial direction;

[0045] Referring to Figure 1, when the rotating ring 3 is at one of its limits, the first engaging portion 11 and the second engaging portion 31 can cooperate with each other to form a tight fit. At this time, the air suction housing 1, the rotating ring 3, and the motor assembly 6 can enclose to form a closed air suction cavity;

[0046] Referring to Figure 2 , when the rotating ring 3 is at the other limit, the third engaging portion 32 and the fourth engaging portion 21 can cooperate with each other to form a tight fit. At this time, the rotating ring 3, the air blowing housing 2, and the motor assembly 6 can enclose to form a closed air blowing cavity;

[0047] The rotating ring 3 moves relative to the fixed frame 4, converting the rotational motion into a linear motion along the axis. The motion process is smoother. By switching the contact and separation between the rotating ring 3 and the air suction housing 1 and the air blowing housing 2, the switching between the air suction function and the air blowing function is realized;

[0048] Compared with the prior art, the blow-suction integrated air duct conversion device reduces two air separation sleeve parts that require side core pulling of the mold, reducing the mold cost. And by forming a tight fit with each other, a good sealing effect can be achieved. At the same time, it can also reduce the machining accuracy of the parts, reducing the production cost. The mold production is simpler and the assembly is convenient.

[0049] As an optional implementation manner, referring to Figure 3 and Figure 4 , the first engaging portion 11, the second engaging portion 31, the third engaging portion 32, and the fourth engaging portion 21 all have engaging surfaces. The engaging surface of the first engaging portion 11 and the engaging surface of the second engaging portion 31 are complementary and matched. The engaging surface of the third engaging portion 32 and the engaging surface of the fourth engaging portion 21 are complementary and matched. The above-mentioned engaging surfaces have rich structural forms, and flexible setting methods can be selected according to actual use requirements;

[0050] In this embodiment, further, the first engaging portion 11, the second engaging portion 31, the third engaging portion 32, and the fourth engaging portion 21 are all preferably provided with inclined surfaces in a ring shape. Among them, the inclined surface of the first engaging portion 11 is relatively located inside the air suction housing 1, and the inclined surface of the fourth engaging portion 21 is relatively located inside the air blowing housing 2. In Figure 3 , the inclined surface of the first engaging portion 11 and the inclined surface of the second engaging portion 31 are mutually matched. In Figure 4 , the inclined surface of the third engaging portion 32 and the inclined surface of the fourth engaging portion 21 are mutually matched. The inclined surfaces provided in a ring shape have a better tight fit effect, good sealing effect, are easy to machine, the mold production is simple, the assembly is convenient, and the production cost is low.

[0051] As an alternative implementation, the adjusting mechanism includes a handle 33 and a spiral rib 34 provided on the outer wall of the rotating ring 3, and further includes a handle groove 41 and a spiral groove 42 formed on the inner wall of the fixed frame 4. The handle 33, the spiral rib 34, the handle groove 41, and the spiral groove 42 are preferably inclined. The handle 33 cooperates with the handle groove 41, and the handle 33 can slide relatively inside the handle groove 41 under the action of an external force. At the same time, the spiral rib 34 and the spiral groove 42 cooperate to form a rotary pair, and the spiral rib 34 can slide relatively inside the spiral groove 42;

[0052] Pushing the handle 33 can make the rotating ring 3 rotate relative to the fixed frame 4 and perform a linear movement along the axis while rotating. Therefore, by rotating the handle 33, the contact and separation between the inclined surfaces on both sides of the rotating ring 3 and the inclined surfaces of the air suction housing 1 and the air blowing housing 2 can be promoted, realizing the switching of the sealed cavity.

[0053] As an alternative implementation, during the assembly process of the rotating ring 3 and the fixed frame 4, on the premise that the outer wall of the rotating ring 3 matches the inner wall of the fixed frame 4, due to the protruding handle 33 on the rotating ring 3, it will be more difficult to actually assemble the rotating ring 3 and the fixed frame 4;

[0054] Therefore, in this embodiment, it is preferably set that the position of the handle 33 on the outer wall of the rotating ring 3 is located at one end of the rotating ring 3 in the axial direction, so that the handle 33 is biased to one side. At the same time, the fixed frame 4 is provided with an installation relief groove 43 at one end of each spiral groove 42. The installation relief groove 43 communicates with the spiral groove 42, and the installation relief groove 43 has a larger installation space than the spiral groove 42;

[0055] With such a setting, during the actual assembly process, first bias the handle 33 to one side of the handle groove 41. At this time, the spiral rib 34 can just enter the installation relief groove 43, and then through the rotation of the rotating ring 3, the spiral rib 34 can enter the spiral groove 42 from the installation relief groove 43, realizing the assembly of the rotating ring 3 and the fixed frame 4;

[0056] In addition, it is preferably set that the fixed frame 4 has a sufficient width, so that the spiral groove 42 can also have a sufficient length. When the rotating ring 3 moves relatively between the air suction housing 1 and the air blowing housing 2, the spiral rib 34 on the rotating ring 3 will not completely move to the installation relief groove 43, thereby ensuring that the spiral rib 34 is always located in the spiral groove 42 and the rotating ring 3 will not be separated from the fixed frame 4.

[0057] As an alternative implementation, the number of spiral ribs 34 can be flexibly selected according to actual needs. In this embodiment, the number of spiral ribs 34 is preferably two. The two spiral ribs 34 and the handle 33 are evenly distributed, trisecting the circumference. The number of handle slots 41 is the same as that of the handle 33 and their positions correspond. The number of spiral slots 42 is the same as that of the spiral ribs 34 and their positions correspond, forming a better matching effect.

[0058] As an alternative implementation, in order to facilitate the rotation of the rotary ring 3 more conveniently, the air blowing and suction integrated air duct conversion device further includes a handle cap 5. The handle cap 5 is connected to the handle 33. Here, the connection is preferably an interference fit. Pulling the handle cap 5 with an external force can drive the handle 33 to move synchronously.

[0059] Two first limiting structures 44 are provided on the fixing frame 4. The two first limiting structures 44 respectively correspond to the two extreme positions when the rotary ring 3 moves. Two second limiting structures 51 are provided on the handle cap 5. When the handle cap 5 and the rotary ring 3 move to a certain extreme position, the first limiting structure 44 corresponding to this extreme position can form a limit with the corresponding second limiting structure 51, thereby limiting the position of the rotary ring 3 at the extreme position and further promoting the close fit of the rotary ring 3 with the air suction housing 1 or the air blowing housing 2.

[0060] In this embodiment, the first limiting structure 44 is preferably a limiting groove, and the second limiting structure 51 is preferably a limiting rib. The limiting rib can fall into the limiting groove. When the handle cap 5 and the rotary ring 3 move to a certain extreme position, the limiting groove corresponding to this extreme position can form a limit with the corresponding limiting rib.

[0061] As an alternative implementation, the air suction housing 1, the fixing frame 4, and the air blowing housing 2 are detachably connected in sequence. Preferably, bolt holes are respectively provided on the outer sides of the air suction housing 1, the fixing frame 4, and the air blowing housing 2, and bolt connections are formed through bolts.

[0062] As an alternative implementation, it further includes a motor assembly 6 and a heating assembly 7. The air suction housing 1, the fixing frame 4, and the air blowing housing 2 jointly cover the outside of the motor assembly 6. The motor assembly 6 is used to drive the air flow. After the motor assembly 6 is started, the motor blades in the motor assembly 6 can blow air by rotating. One end of the air blowing housing 2 away from the fixing frame 4 is connected to the heating assembly 7. The heating assembly 7 is used to adjust the air flow temperature. The heating assembly 7 preferably includes a heating housing and heating wires. The heating housing is connected to the air blowing housing 2. The heating wires inside the heating housing can heat the air to achieve air blowing and drying. The structures and application principles of the above motor assembly 6 and heating assembly 7 are relatively conventional existing technologies, so no further elaboration will be made.

[0063] It should be noted that since the rotating ring 3 needs to move relative to the motor assembly 6, a seal also needs to be maintained between the two during the movement of the rotating ring 3 to keep the suction air cavity and the blowing air cavity relatively enclosed. Therefore, it is preferred to provide a sealing structure outside the motor assembly 6. The outer wall of the sealing structure can be in contact with the inner wall of the rotating ring 3 and can also guide the rotating ring 3. In addition, on the side where the sealing structure contacts the motor assembly 6, a shock-absorbing structure is preferably provided to reduce the impact of motor vibration on other structures. The structures and application principles of the sealing structure and the shock-absorbing structure are relatively conventional existing technologies, so no further elaboration is made and no detailed display is shown in the drawings.

[0064] The blow-suction integrated air duct conversion device mentioned in this embodiment has at least two working modes: a dust suction mode and a blowing mode;

[0065] When the blow-suction integrated air duct conversion device is in the dust suction mode, the single-sided inclined surface of the rotating ring 3 is closely attached to the corresponding inclined surface of the suction air housing 1 to form a closed suction air cavity. The motor blades in the motor assembly 6 rotate, and the motor blades continuously blow the air inside the suction air cavity out of the suction air cavity, forming a negative pressure space inside the suction air cavity. Since there is only one air inlet in the suction air cavity, the air flow can only enter the suction air cavity from the air inlet, and the air inlet is connected to the dust suction end of the blow-suction integrated machine, thereby achieving the purpose of dust suction;

[0066] When the blow-suction integrated air duct conversion device is in the blowing mode, the single-sided inclined surface of the rotating ring 3 is closely attached to the corresponding inclined surface of the blowing air housing 2 to form a closed blowing air cavity. The motor blades in the motor assembly 6 rotate, and the motor blades continuously blow air into the blowing air cavity, forming a high-pressure air space inside the blowing air cavity. Since there is only one air outlet in the blowing air cavity, the air flow can only leave the blowing air cavity from the air outlet. The air blown out from the air outlet is heated by the heating wire in the heating assembly 7 and becomes hot air, which is blown out by the main body of the blow-suction integrated machine, thereby achieving the purpose of blowing and drying.

[0067] Embodiment 2

[0068] Referring to Figure 9 , the difference between this embodiment and Embodiment 1 is that the adjusting mechanism includes a handle 33 provided on the outer wall of the rotating ring 3 and a handle groove 41 opened on the inner wall of the fixing frame 4, and does not include the spiral rib 34 and the spiral groove 42 opened on the inner wall of the fixing frame 4. The handle 33 and the handle groove 41 cooperate with each other. The handle groove 41 in this embodiment is not inclined and can form a straight groove structure. The handle 33 can slide relatively inside the handle groove 41 under the action of an external force. The straight groove structure can enrich the structure of the product and provide more structure form options.

[0069] Embodiment 3

[0070] Reference Figure 10 , the present utility model further provides a blowing and suction integrated machine, which includes the above-mentioned blowing and suction integrated air duct conversion device, and also includes conventional structures such as a housing, a base, a power supply component, a control component, and control buttons. The above-mentioned structures are relatively conventional prior arts, so no further description will be given;

[0071] It should be noted that preferably, an opening corresponding to the position of the handle cap 5 and capable of allowing the handle cap 5 to be adjusted and moved is provided on the housing. By adjusting the handle cap 5, the handle 33 is driven to realize the adjustment of the rotating ring 3, so as to realize the switching between the air suction function and the air blowing function.

[0072] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A blowing and suction integrated air duct conversion device, characterized in that, It includes a suction housing (1), a blowing housing (2), a rotating ring (3) and a fixing bracket (4). The rotating ring (3) and the fixing bracket (4) are located between the suction housing (1) and the blowing housing (2). A first mating part (11) is provided on one side of the suction housing (1) close to the rotating ring (3). Second mating parts (31) and third mating parts (32) are respectively provided on both sides of the rotating ring (3). A fourth mating part (21) is provided on one side of the blowing housing (2) close to the rotating ring (3). An adjusting mechanism is jointly provided on the rotating ring (3) and the fixing bracket (4). The adjusting mechanism can drive the rotating ring (3) to axially move relative to the fixing bracket (4). When the rotating ring (3) axially moves to the limit position, the first mating part (11) and the second mating part (31) cooperate with each other to form a tight fit or the third mating part (32) and the fourth mating part (21) cooperate with each other to form a tight fit.

2. The blowing and suction integrated air duct conversion device according to claim 1, wherein The first mating part (11), the second mating part (31), the third mating part (32) and the fourth mating part (21) all have mating surfaces. The mating surface of the first mating part (11) is complementarily mated with the mating surface of the second mating part (31). The mating surface of the third mating part (32) is complementarily mated with the mating surface of the fourth mating part (21).

3. The blowing and suction integrated air duct conversion device according to claim 2, wherein The mating surfaces on the first mating part (11), the second mating part (31), the third mating part (32) and the fourth mating part (21) are all annularly arranged inclined surfaces. The inclined surface of the first mating part (11) is matched with the inclined surface of the second mating part (31). The inclined surface of the third mating part (32) is matched with the inclined surface of the fourth mating part (21).

4. The blowing and suction integrated air duct conversion device according to claim 1, wherein, The adjusting mechanism includes a handle (33) and / or a spiral rib (34) provided on the outer wall of the rotating ring (3) and a handle groove (41) and / or a spiral groove (42) opened on the inner wall of the fixing bracket (4). The handle (33) can relatively slide inside the handle groove (41) under the action of an external force. The spiral rib (34) can relatively slide inside the spiral groove (42).

5. The blowing and suction integrated air duct conversion device according to claim 4, wherein, The setting position of the handle (33) on the outer wall of the rotating ring (3) is at one end of the rotating ring (3) in the axial direction. An installation relief groove (43) is opened at one end of each spiral groove (42) of the fixing bracket (4). The installation relief groove (43) is communicated with the spiral groove (42). The spiral rib (34) can enter the spiral groove (42) from the installation relief groove (43).

6. The blowing and suction integrated air duct conversion device according to claim 4, wherein The number of the handle grooves (41) is the same as that of the handles (33) and their positions correspond to each other. The number of the spiral grooves (42) is the same as that of the spiral ribs (34) and their positions correspond to each other.

7. The blowing and suction integrated air duct conversion device according to claim 4, characterized in that, It further includes a handle cap (5), the handle cap (5) is connected to the handle (33), two first limiting structures (44) are arranged on the fixing frame (4), and the two first limiting structures (44) respectively correspond to two limit positions when the rotating ring (3) moves. Two second limiting structures (51) are arranged on the handle cap (5). When the handle cap (5) and the rotating ring (3) move to a certain limit position, the first limiting structure (44) corresponding to this limit position can form a limit with the corresponding second limiting structure (51).

8. The blow-suction integrated air duct conversion device according to claim 7, characterized in that, The first limiting structure (44) is a limiting groove, and the second limiting structure (51) is a limiting rib. The limiting rib can fall into the limiting groove. When the handle cap (5) and the rotating ring (3) move to a certain limit position, the limiting groove corresponding to this limit position can form a limit with the corresponding limiting rib.

9. The blowing and suction integrated air duct conversion device according to claim 1, wherein It further includes a motor assembly (6) and a heating assembly (7). The air suction housing (1), the fixing frame (4) and the air blowing housing (2) jointly cover the outside of the motor assembly (6). The motor assembly (6) is used to drive the air flow. One end of the air blowing housing (2) far from the fixing frame (4) is connected to the heating assembly (7), and the heating assembly (7) is used to adjust the temperature of the air flow.

10. A blow-suction integrated machine, characterized in that, It includes the blow-suction integrated air duct conversion device according to any one of claims 1-9.

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