CN219374531U - Cleaning machine - Google Patents

Abstract

The utility model relates to a cleaning machine, which comprises an organic shell, wherein the inside of the shell is provided with a containing cavity; the separating assembly is used for separating at least dust and air, can be detachably arranged in the accommodating cavity and comprises a shell with a storage cavity inside, and the shell is provided with a drain outlet communicated with the storage cavity and a shielding piece which can move relative to the drain outlet to open and close the drain outlet; the driving mechanism is relatively fixed on the shell, the power output end is in transmission connection with the shielding piece so as to enable the shielding piece to translate along the direction parallel to the plane where the drain outlet is located, the power output end is detachably connected with the shielding piece, and the detaching direction is intersected with the moving direction of the shielding piece. When the separation assembly is detached from the casing, the shielding piece is separated from the driving mechanism, so that the driving mechanism is prevented from being separated along with the separation assembly, and when the separation assembly is cleaned, the risk of short circuit is increased due to contact with water, and the service life of the driving mechanism is prolonged.

Description

Cleaning machine

Technical Field

The utility model belongs to the field of household washing and cleaning, and particularly relates to a cleaning machine with a separation component.

Background

At present, the cleaning machine is a floor cleaning machine, a dust collector or a floor sweeping machine, wherein the dust collector or the floor sweeping machine sucks the mixture of dust and the like mixed with water vapor on the floor into a storage cavity thereof, and a drain outlet communicated with the storage cavity is generally arranged for discharging the garbage in the storage cavity.

The Chinese patent No. ZL202120708340.5 (issued to CN 215502773U) discloses a cleaning machine comprising a housing having a storage cavity therein, the housing having a drain communicated with the storage cavity; the cover plate is arranged at the drain outlet of the shell and is driven by the first driving piece to rotate relative to the drain outlet; the cover plate is arranged to rotate in a plane where the drain outlet is located to open or close the drain outlet; the top of casing is provided with the top cap, the top cap is seted up jaggedly in the position that corresponds the drain, the apron is located the drain with between the top cap, the breach with the shape of apron is the same, and is in the apron rotates the in-process and opens or close the breach, still including acting on the apron just makes all the time the apron has the elastic component of upward movement trend.

The first driving member (driving mechanism) of the above patent is usually fixed to the separation module, and when the separation module is washed, water easily contacts the driving mechanism to cause a problem of shorting the driving mechanism, thereby causing damage to the driving mechanism.

Accordingly, there is a need for further improvements to existing cleaning machines.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a cleaning machine which can prevent a driving mechanism from falling off along with a separation assembly so as to prevent the driving mechanism from meeting water when the separation assembly is cleaned.

The technical scheme adopted for solving the technical problems is as follows: a cleaning machine comprising:

a housing having a cavity therein;

the separating assembly is used for separating at least dust and air, can be detachably arranged in the accommodating cavity and comprises a shell with a storage cavity inside, and the shell is provided with a drain outlet communicated with the storage cavity and a shielding piece which can move relative to the drain outlet to open and close the drain outlet;

it is characterized in that the method also comprises the following steps:

the driving mechanism is relatively fixed on the shell, the power output end of the driving mechanism is in transmission connection with the shielding piece so as to enable the shielding piece to translate along the direction parallel to the plane where the drain outlet is located, the power output end is detachably connected with the shielding piece, and the detaching direction is intersected with the moving direction of the shielding piece.

In order to realize the disassembly and assembly of the power output end of the driving mechanism and the shielding piece simultaneously when the separation assembly is disassembled and assembled, the disassembly and assembly steps are reduced, the disassembly and assembly efficiency is improved, and the disassembly direction of the power output end of the driving mechanism is consistent with the disassembly direction of the separation assembly.

The detaching direction of the separating assembly may be along the up-down direction or the left-right direction, but from the viewpoint of convenient disassembly by a user, preferably, the top of the accommodating cavity has an opening through which the separating assembly passes, and the detaching direction of the separating assembly is along the up-down direction.

In order to facilitate the detachment and installation of the shielding piece and the power output end of the driving mechanism, the device further comprises a transmission piece, wherein the power output end of the transmission piece is in driving connection with the shielding piece, the transmission piece is provided with two extending pieces extending along the detachment direction of the separation assembly, a gap for the power output end of the driving mechanism to be inserted into is reserved between the two extending pieces, and the extending pieces are positioned on the movement path of the power output end of the driving mechanism. In this way, only the power output end of the driving mechanism is required to be inserted between the two extension pieces, namely, the power output end of the driving mechanism and the shielding piece are convenient to detach and install.

In order to realize the installation of the shielding piece, the device also comprises a mounting plate which is relatively fixed with the peripheral edge of the sewage outlet and extends along the moving direction of the shielding piece, and the shielding piece is restrained on the mounting plate in a mode of being capable of moving along the mounting plate.

The drive mechanism may be a push drive mechanism, such as an electric push rod, or a rotation drive mechanism, but preferably the drive mechanism is a rotation drive mechanism, the transmission member is arranged to be rotatable relative to the housing under rotation drive of the drive mechanism, and the rotation axis of the transmission member is along the length direction of the extension member.

The driving mechanism has various structural forms, preferably, the driving mechanism comprises a motor and a swinging rod capable of rotating under the driving of the motor, the motor is positioned on one side of the mounting plate, which is away from the shielding piece, an output shaft of the motor extends along the length direction of the shielding piece, a first end of the swinging rod is mounted on the output shaft of the motor, a second end of the swinging rod is a power output end of the driving mechanism, the first end of the transmission piece is rotationally restrained on the shell, a sliding groove extending along the length direction of the transmission piece is formed in the second end of the transmission piece, the extending piece is positioned between the rotating position of the transmission piece and the sliding groove, a guide groove extending along the moving direction of the shielding piece is formed in the mounting plate, and the shielding piece is provided with a guide post which penetrates through the guide groove and is inserted into the sliding groove. In addition, the swing rod can adopt a crank, and an upward extending rod is arranged on the crank and serves as a power output end of the driving mechanism.

In order to limit the movement stroke of the extension piece, preferably, the device further comprises a fixing shell which is relatively fixed with the shell, the fixing shell is provided with a wall plate positioned between the swing rod and the shielding piece, the wall plate is provided with an arc-shaped groove which extends along the rotation direction of the motor and is used for the extension piece to pass through, and the extension piece can be slidably limited in the arc-shaped groove.

Specifically, the two extending pieces are a first extending column and a second extending column respectively, the first extending column is propped against the first end of the arc-shaped groove when the shielding piece is in a state of closing the sewage outlet, and the second extending column is propped against the second end of the arc-shaped groove when the shielding piece is in a state of opening the sewage outlet. In addition, the movement travel of the shutter can also be limited by the length of the guide slot.

In order to facilitate the installation of the fixing shell while supporting the separation assembly, the drain outlet is positioned on the top of the shell, the accommodating cavity is internally provided with a shelving plate which transversely extends to allow the mounting plate to be placed on the accommodating cavity, the motor is positioned below the shelving plate, and the fixing shell is positioned above the shelving plate.

Preferably, the casing has a connecting plate located below the mounting plate, the transmission member is located between the mounting plate and the connecting plate, and the first end of the transmission member is rotatably disposed on the mounting plate, the connecting plate is placed on the placing plate, an arc hole consistent with the arc groove is formed at a position corresponding to the arc groove, the extension member sequentially passes through the arc groove and the arc hole, and the fixing casing is located between the connecting plate and the placing plate.

The drain outlet can be formed at the top of the shell, and can be located on the drain pipe which is vertically arranged, but preferably, the shell is provided with the drain pipe which is vertically arranged, the lower end of the drain pipe is communicated with the storage cavity, and the top opening of the drain pipe is the drain outlet.

The drain pipe may be located in the storage chamber or outside the storage chamber, and preferably is located outside the storage chamber in order to avoid accumulation of refuse on the outer peripheral wall thereof when disposed in the storage chamber.

For conveniently clearing up the inner wall of storing the chamber, preferably, the casing is in including the open drain pan in top and cover the open top of drain pan is in on the drain pan, and be located under the top cap, the shielding member is located between drain and the top cap, the top cap is in the position of corresponding the drain has seted up the opening that is linked together with this drain, under the drain is in the closed state, the top surface of shielding member shelters from the opening.

In order to guide the movement of the shutter, the shutter and the mounting plate are both constrained together by means of a sliding-fit bead and runner, both extending along the direction of movement of the shutter.

The protruding strips can be arranged on the shielding piece or the mounting plate, but preferably, the mounting plate is provided with extending walls extending towards the direction away from the sewage outlet along the opposite sides of the movement direction of the mounting plate, the extending walls are provided with the sliding grooves, and the shielding piece is provided with the protruding strips on the side walls corresponding to the sliding grooves.

The cleaning machine is a sweeper, a cleaner or a scrubber, but preferably the cleaning machine is a sweeper.

In order to separate dust and the like, the separated dust, water and the like are settled to the bottom of the storage cavity, a separating piece for separating at least dust and air is arranged in the storage cavity, and the shell is provided with an air inlet and an air outlet which are communicated with the storage cavity.

Compared with the prior art, the utility model has the advantages that: the separation assembly in the cleaner can be detachably connected to the casing, the driving mechanism is arranged on the casing, the shielding piece is arranged on the casing of the separation assembly and moves relative to the sewage outlet to open and close the sewage outlet under the driving of the driving mechanism, the power output end of the driving mechanism and the shielding piece can be detached, and the detaching direction is crossed with the moving direction of the shielding piece, so that the shielding piece can be separated from the shielding piece when the shielding piece is not influenced to drive, and the shielding piece is separated from the driving mechanism when the separation assembly is detached from the casing, so that the driving mechanism is prevented from being separated along with the separation assembly, and the short circuit risk is increased due to contact with water when the separation assembly is cleaned, and the service life of the driving mechanism is prolonged.

Drawings

FIG. 1 is a sectional view showing a part of a construction of a cleaner in which a shield closes a drain in the present embodiment;

FIG. 2 is another angular cross-sectional view of the cleaner section structure of the present embodiment wherein the shutter closes the drain;

FIG. 3 is a schematic view showing a perspective exploded view of a part of the structure of the cleaner in the present embodiment;

FIG. 4 is a schematic diagram of the configuration of the coupling of the separation assembly to the motor;

FIG. 5 is a schematic perspective exploded view of the separation assembly;

FIG. 6 is a cross-sectional view of the separation assembly;

FIG. 7 is a cross-sectional view of FIG. 4;

fig. 8 is a sectional view showing a part of the structure of the cleaner in which the shield opens the drain in this embodiment.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

As shown in fig. 1 to 8, the cleaning machine of the present embodiment is a sweeper. The sweeper comprises a machine shell 5, a separation assembly 1, a mounting plate 13, a shielding piece 2, a driving mechanism 3 and a transmission piece 4. The casing 5 has a cavity 50 therein, the top of the cavity 50 is open, the top of the cavity 50 has an opening 501 for the separation assembly 1 to pass through, and as shown in fig. 3, the separation assembly 1 is detachably installed in the cavity 50 along the up-down direction.

As shown in fig. 1, the separating assembly 1 includes a housing 11 having a storage chamber 10 therein, a separating member 14 for separating at least dust and air is provided in the storage chamber 10, the housing 11 has a drain port 121 communicating with the storage chamber 10, and has an air inlet and an air outlet communicating with the storage chamber 10. Specifically, the shell 11 is provided with a drain pipe 12 which is vertically arranged and is located outside the storage cavity 10, the lower end of the drain pipe 12 is communicated with the storage cavity 10, and the top opening of the drain pipe 12 is the drain outlet 121. The aforementioned separating unit 1 is at least used for separating dust from air, and if there is sewage, the sewage separated by the separating unit is deposited to the bottom of the storage chamber 10. The aforementioned separating member may be any structure in the prior art, and will not be described in detail in this embodiment.

As shown in fig. 5 to 8, the shielding member 2 is provided on the housing 11 and can be translated along a plane parallel to the drain outlet 121 to open and close the drain outlet 121, so that the shielding member 2 is located above the drain outlet 121. Specifically, the mounting plate 13 is fixed relatively to the peripheral edge of the drain outlet 121, and extends along the moving direction of the shutter 2.

In this embodiment, as shown in fig. 5, a mounting plate 13 is formed on the outer peripheral wall of the drain pipe 12. The shutter 2 described above is constrained to the mounting plate 13 in such a way as to be movable along the mounting plate 13. Specifically, the shutter 2 and the mounting plate 13 are both restrained together by the slide-fit protrusions 221 and the slide grooves 1311, and the protrusions 221 and the slide grooves 1311 extend along the movement direction of the shutter 2. The mounting plate 13 has extension walls 131 extending in a direction away from the drain outlet 121 on opposite sides of the movement direction thereof, a chute 1311 provided in the extension walls 131, and a protrusion 221 provided on a side wall of the shutter 2 corresponding to the chute 1311. In addition, in order to facilitate the butt joint of the sewage guide pipe and the sewage outlet of the subsequent base station, the shell 11 comprises a bottom shell 11a with an open top and a top cover 11b covering the open top of the bottom shell 11a, the sewage guide pipe 12 is arranged on the bottom shell 11a and is positioned below the top cover 11b, the shielding member 2 is positioned between the sewage guide pipe 12 and the top cover 11b, the top cover 11b is provided with an opening 11b1 communicated with the sewage outlet 121 at a position corresponding to the sewage outlet 121, and the top surface of the shielding member 2 shields the opening 11b1 when the sewage outlet 121 is in a closed state.

As shown in fig. 3 and 4, the driving mechanism 3 is relatively fixed on the casing 5, and the power output end of the driving mechanism 3 is detachably disposed on the shielding member 2 along the up-down direction and is in transmission connection with the shielding member 2, so that the shielding member 2 translates along the direction parallel to the plane of the drain outlet 121 to open and close the drain outlet 121. In the present embodiment, the direction of detachment of the power output end of the drive mechanism 3 coincides with the direction of detachment of the separation assembly 1. And the power output end of the transmission member 4 is drivingly connected to the shutter 2, and the transmission member 4 has an extension extending in the up-down direction. The two extending members are respectively a first extending column 42 and a second extending column 43, and a gap 01 for inserting the power output end of the driving mechanism 3 is reserved between the two extending members, and the first extending column 42 and the second extending column 43 are positioned on the motion path of the power output end of the driving mechanism 3.

As shown in fig. 4 to 8, the driving mechanism 3 is a rotation driving mechanism, the transmission member 4 is arranged to be rotatable with respect to the housing 5 under rotation driving of the driving mechanism 3, and the rotation axis of the transmission member 4 extends in the up-down direction (i.e., in the length direction of the extension member). Specifically, the driving mechanism 3 includes a motor 31 and a swing link 32 capable of rotating under the driving of the motor 31, the motor 31 is located below the mounting plate 13, i.e. on a side of the mounting plate 13 away from the shielding member 2, and an output shaft of the motor 31 extends along an up-down direction, a first end of the swing link 32 is mounted on the output shaft of the motor 31, and a second end of the swing link 32 is a power output end of the driving mechanism 3. The mounting plate 13 is provided with a guide groove 130 extending in the moving direction of the shutter 2, and the shutter 2 has a guide post 21 inserted into the slide groove 41 through the guide groove 130.

In order to limit the movement travel of the two extension pieces, the fixed housing 6 is fixed relative to the casing 5 as shown in fig. 7 and 8. Specifically, the cavity 50 has a transversely extending rest plate 51 therein, and the motor 31 is positioned below the rest plate 51. The outer peripheral wall of the drain pipe 12 of the housing 11 is laterally extended to form a connection plate 111 below the mounting plate 13, the connection plate 111 is placed on the placing plate 51, an arc hole 112 which is consistent with the arc groove 611 in shape is formed at a position corresponding to the arc groove 611, the fixing case 6 is located between the connection plate 111 and the placing plate 51, and the fixing case 6 is located above the placing plate 51. As shown in fig. 8, the transmission member 4 is located between the mounting plate 13 and the connecting plate 111, a first end of the transmission member 4 is rotatably restrained on the mounting plate 13 of the housing 11, a second end of the transmission member 4 is provided with a sliding groove 41 extending along a length direction thereof, and the first extending post 42 and the second extending post 43 are located between the rotating portion 40 of the transmission member 4 and the sliding groove 41 and sequentially pass through the arc-shaped groove 611 and the arc-shaped hole 112. The first end of the driving member 4 is rotatably connected to the mounting plate 13 at a rotation position 40.

As shown in fig. 7 and 8, the fixed case 6 has a wall plate 61 between the swing link 32 and the shutter 2, the wall plate 61 is provided with an arc-shaped groove 611 extending in the rotation direction of the motor 31 and through which the extension member passes, and the first extension post 42 and the second extension post 43 are slidably retained in the arc-shaped groove 611. The first extension column 42 abuts against the first end of the arc-shaped groove 611 in a state where the screen 2 is in the closed drain 121, and the second extension column 43 abuts against the second end of the arc-shaped groove 611 in a state where the screen 2 is in the open drain 121.

When the sewage outlet 121 needs to be opened, the swing rod 32 is driven to swing when the motor 31 rotates, at this time, the swing rod 32 pushes the second extension column 43 to drive the transmission member 4 to rotate, and the guide column 21 is positioned in the sliding groove 41 of the transmission member 4 and moves along the length direction of the guide groove 130 under the guide limit of the guide groove 130 to be away from the sewage outlet 121 so as to open the sewage outlet 121; on the contrary, when the motor 31 rotates in the opposite direction, the closing of the drain outlet 121 by the shielding member 2 is realized by the cooperation of the transmission member 4 and the guide groove 130.

In the description and claims of the present utility model, terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used to describe various example structural parts and elements of the present utility model, but these terms are used herein for convenience of description only and are determined based on the example orientations shown in the drawings. Because the disclosed embodiments of the utility model may be arranged in a variety of orientations, the directional terminology is used for purposes of illustration and is in no way limiting, such as "upper" and "lower" are not necessarily limited to being in a direction opposite or coincident with the direction of gravity.

Claims (18)

1. A cleaning machine comprising:

a housing (5) having a cavity (50) therein;

a separating assembly (1) for separating at least dust and air, which is detachably arranged in the containing cavity (50), and comprises a shell (11) with a storage cavity (10) inside, wherein the shell (11) is provided with a drain outlet (121) communicated with the storage cavity (10) and a shielding piece (2) which can move relative to the drain outlet (121) to open and close the drain outlet (121);

it is characterized in that the method also comprises the following steps:

the driving mechanism (3) is relatively fixed on the shell (5), the power output end of the driving mechanism is in transmission connection with the shielding piece (2) so that the shielding piece (2) translates along the direction parallel to the plane where the sewage outlet (121) is located, the power output end is detachably connected with the shielding piece (2), and the detaching direction is intersected with the moving direction of the shielding piece.

2. A cleaning machine as claimed in claim 1, wherein: the detaching direction of the power output end of the driving mechanism (3) is consistent with the detaching direction of the separating assembly (1).

3. A cleaning machine as claimed in claim 2, wherein: the top of the accommodating cavity (50) is provided with an opening (501) for the separation assembly (1) to pass through, and the detaching direction of the separation assembly (1) is along the up-down direction.

4. A cleaning machine as claimed in claim 2, wherein: the device is characterized by further comprising a transmission part (4), wherein the power output end of the transmission part (4) is in driving connection with the shielding part (2), the transmission part (4) is provided with two extending parts which extend along the detaching direction of the separating assembly (1), a gap (01) for the power output end of the driving mechanism (3) to be inserted into is reserved between the two extending parts, and the extending parts are positioned on the motion path of the power output end of the driving mechanism (3).

5. The cleaning machine of claim 4, wherein: the device also comprises a mounting plate (13) which is relatively fixed with the peripheral edge of the sewage outlet (121) and extends along the moving direction of the shielding piece (2), and the shielding piece (2) is restrained on the mounting plate (13) in a mode of being capable of moving along the mounting plate (13).

6. The cleaning machine of claim 5, wherein: the driving mechanism (3) is a rotation driving mechanism, the transmission piece (4) is arranged to rotate relative to the shell (5) under the rotation driving of the driving mechanism (3), and the rotation axis of the transmission piece (4) is along the length direction of the extension piece.

7. The cleaning machine of claim 6, wherein: the driving mechanism (3) comprises a motor (31) and a swinging rod (32) capable of rotating under the driving of the motor (31), the motor (31) is located on one side, deviating from the shielding piece (2), of the mounting plate (13), an output shaft of the motor (31) extends along the length direction of the extending piece, a first end of the swinging rod (32) is mounted on the output shaft of the motor (31), a second end of the swinging rod (32) is the power output end of the driving mechanism (3), the first end of the transmission piece (4) can be rotationally restrained on the shell (11), a sliding groove (41) extending along the length direction of the transmission piece is formed in the second end of the transmission piece (4), the extending piece is located between a rotating part (40) of the transmission piece (4) and the sliding groove (41), a guide groove (130) extending along the moving direction of the shielding piece (2) is formed in the mounting plate (13), and the shielding piece (2) is provided with a guide post (21) penetrating through the guide groove (130).

8. The cleaning machine of claim 7, wherein: the motor is characterized by further comprising a fixing shell (6) which is relatively fixed with the casing (5), wherein the fixing shell (6) is provided with a wall plate (61) which is positioned between the swing rod (32) and the shielding piece (2), the wall plate (61) is provided with an arc-shaped groove (611) which extends along the rotation direction of the motor (31) and is used for the extending piece to pass through, and the extending piece can be limited in the arc-shaped groove (611) in a sliding mode.

9. The cleaning machine of claim 8, wherein: the two extending pieces are a first extending column (42) and a second extending column (43) respectively, the first extending column (42) is propped against the first end of the arc-shaped groove (611) when the shielding piece (2) is in a state of closing the sewage outlet (121), and the second extending column (43) is propped against the second end of the arc-shaped groove (611) when the shielding piece (2) is in a state of opening the sewage outlet (121).

10. The cleaning machine of claim 8, wherein: the drain outlet (121) is positioned on the top of the shell (11), the accommodating cavity (50) is internally provided with a shelving plate (51) which transversely extends to allow the mounting plate (13) to be placed on the shelving plate (51), the motor (31) is positioned below the shelving plate (51), and the fixed shell (6) is positioned above the shelving plate (51).

11. The cleaning machine of claim 10, wherein: the shell (11) is provided with a connecting plate (111) positioned below the mounting plate (13), the transmission piece (4) is positioned between the mounting plate (13) and the connecting plate (111), the first end of the transmission piece (4) is rotatably arranged on the mounting plate (13), the connecting plate (111) is placed on the placing plate (51), an arc-shaped hole (112) with the shape identical to that of the arc-shaped groove (611) is formed in a position corresponding to the arc-shaped groove (611), the extension piece sequentially penetrates through the arc-shaped groove (611) and the arc-shaped hole (112), and the fixing shell (6) is positioned between the connecting plate (111) and the placing plate (51).

12. A cleaning machine as claimed in claim 1, wherein: the sewage draining device is characterized in that a sewage draining pipe (12) which is vertically arranged is arranged on the shell (11), the lower end of the sewage draining pipe (12) is communicated with the storage cavity (10), and the top opening of the sewage draining pipe (12) is the sewage draining outlet (121).

13. The cleaning machine of claim 12, wherein: the drain pipe (12) is located outside the storage cavity (10).

14. The cleaning machine of claim 12, wherein: the shell (11) comprises a bottom shell (11 a) with an open top and a top cover (11 b) covering the bottom shell (11 a), the drain pipe (12) is arranged on the bottom shell (11 a) and located below the top cover (11 b), the shielding piece (2) is located between the drain pipe (12) and the top cover (11 b), an opening (11 b 1) communicated with the drain outlet (121) is formed in the position, corresponding to the drain outlet (121), of the top cover (11 b), and the top surface of the shielding piece (2) shields the opening (11 b 1) when the drain outlet (121) is in a closed state.

15. The cleaning machine of claim 5, wherein: the shielding piece (2) and the mounting plate (13) are both restrained together through a convex strip (221) and a sliding groove (1311) which are in sliding fit, and the convex strip (221) and the sliding groove (1311) extend along the moving direction of the shielding piece (2).

16. The cleaning machine of claim 15, wherein: the mounting plate (13) is provided with extension walls (131) extending towards the direction away from the sewage outlet (121) along the opposite sides of the movement direction, the extension walls (131) are provided with sliding grooves (1311), and the side walls of the corresponding sliding grooves (1311) are provided with raised strips (221) of the shielding piece (2).

17. A cleaning machine as claimed in claim 1, wherein: the cleaning machine is a sweeper.

18. A cleaning machine as claimed in any one of claims 1 to 17, wherein: a separating piece (14) for separating at least dust and air is arranged in the storage cavity (10), and the shell (11) is provided with an air inlet and an air outlet which are communicated with the storage cavity (10).