CN215191250U

CN215191250U - Dust collector

Info

Publication number: CN215191250U
Application number: CN202120339823.2U
Authority: CN
Inventors: 陆为东; 柳晓宇; 王正生
Original assignee: Suzhou Alton Electrical and Mechanical Industry Co Ltd
Current assignee: Suzhou Alton Electrical and Mechanical Industry Co Ltd
Priority date: 2021-02-05
Filing date: 2021-02-05
Publication date: 2021-12-17
Anticipated expiration: 2031-02-05

Abstract

A dust collector comprises a dust collecting container, a fan, a first filter, a valve device and a driving motor, wherein the valve device comprises a fixed housing and a valve core which can rotate relative to the housing under the driving of the driving motor, the valve core is at least partially accommodated in the housing, the driving motor is provided with a rotating shaft which can drive the valve core to rotate relative to the housing, when the fan sucks air and the valve core is at a first angle position, the air filtered by the first filter flows through the valve device, and the valve core bears downward air pressure; the rotating shaft and the valve core are locked together, so that the rotating shaft can suspend the valve core, and the design can resist the downward pressing of air pressure on the valve core and effectively prevent the valve core from sinking downward under the downward air pressure even if the valve core bears the downward air pressure when the fan operates.

Description

Dust collector

[ technical field ] A method for producing a semiconductor device

The utility model relates to a dust catcher especially relates to the valve gear on the dust catcher wind path.

[ background of the invention ]

US20160331198 discloses a vacuum cleaner provided with a valve device provided with a butterfly valve for opening and closing the air inlet and outlet of the filter, a drive device employing an electromagnetic solenoid and provided with a metal drive rod at least partially accommodated in the electromagnetic solenoid, the butterfly valve being provided with a rod portion perpendicular to and hinged to the metal drive rod, the metal drive rod being capable of linear movement under the electromagnetic force of the electromagnetic solenoid to enter and exit the electromagnetic solenoid, the metal drive rod being capable of pushing the rod portion of the butterfly valve to deflect during the linear movement so as to deflect the inlet and outlet of the butterfly valve relative to the filter.

[ Utility model ] content

The utility model provides a dust collector, the valve core of the valve device is hung through the rotating shaft and is not easy to sink.

A dust collector comprises a dust collecting container, a fan, a first filter, a valve device and a driving motor, wherein the valve device comprises a fixed housing and a valve core which can rotate relative to the housing under the driving of the driving motor, the valve core is at least partially accommodated in the housing, the driving motor is provided with a rotating shaft which can drive the valve core to rotate relative to the housing, when the fan sucks air and the valve core is at a first angle position, the air filtered by the first filter flows through the valve device, and the valve core bears downward air pressure; the rotating shaft and the valve core are locked together, so that the rotating shaft can hang the valve core.

By the design, even if the valve core bears downward air pressure when the fan operates, the valve core is hung by the rotating shaft, so that the downward pressing of the air pressure on the valve core can be resisted, and the downward sinking of the valve core under the downward air pressure is effectively inhibited.

Optionally, the vacuum cleaner further comprises a second filter, the valve core can rotate along a rotation direction relative to the housing from a first angle position to a second angle position and can rotate reversely relative to the housing from the first angle position to a third angle position, the fan sucks air, and when the valve core is located at the first angle position, the air filtered by the second filter flows through the valve device; when the fan sucks and the valve core is at the second angle position, the air filtered by the second filter flows through the valve device and the valve core bears downward air pressure; when the fan draws and the valve element is in the third angular position, air filtered through the first filter flows through the valve means and the valve element is subjected to a downward air pressure.

Optionally, the vacuum cleaner further includes a second filter, the valve core is provided with a first top wall, when the fan performs suction and the valve core is located at the first angle position, the air filtered by the first filter flows between the first top wall and the lower end of the valve core in the process of flowing to the suction air port of the fan, and the air filtered by the second filter flows between the first top wall and the lower end of the valve core in the process of flowing to the suction air port of the fan, and at this time, the first top wall bears downward air pressure; when the fan sucks and the valve core is positioned at the second angle position, the air filtered by the second filter flows between the first top wall and the lower end of the valve core in the process of flowing to a sucking air port of the fan, and the first top wall bears downward air pressure; when the fan sucks and the valve core is located at the third angle position, air filtered by the first filter flows through the space between the first top wall and the lower end of the valve core in the process of flowing to a sucking air port of the fan, and at the moment, the first top wall bears downward air pressure.

Optionally, the valve core is located below the driving motor, the valve core is provided with a first top wall, the first top wall is located at the top of the valve core, when the fan performs suction and the valve core is located at the first angle position, air filtered by the first filter flows through a space between the first top wall and the lower end of the valve core in a process of flowing to a suction air port of the fan, and the first top wall bears downward air pressure.

Optionally, the housing is provided with a first vent, the valve core is provided with a channel, and when the valve core is located at a first angle position, the first vent is communicated between the first filter and a suction air port of the fan; when the valve core is at the second angle position, the first ventilation opening is communicated between the first filter and the channel; the vacuum cleaner further comprises a gasket, which is fixed relative to the housing, the lower end of the channel being closed by the gasket, and the upper end of the channel being closed by the first top wall.

Optionally, the vacuum cleaner further comprises a sealing gasket, the valve core is in a vertical state on the upper side of the sealing gasket, the lower end of the valve core is connected with the sealing gasket, and the lower end of the valve core and the upper surface of the sealing gasket are in sliding friction when the valve core rotates relative to the housing under the driving of the driving motor.

Optionally, the vacuum cleaner further includes a lower housing, the first filter is detachably mounted to the lower housing, the valve device is located on an upper side of the lower housing, the housing is fixed with respect to the lower housing, a lower end of the housing abuts against the lower housing, the gasket is attached to an upper surface of the lower housing to form a part of the lower housing, and the lower end of the housing surrounds the gasket.

Optionally, the lower casing is further provided with an annular convex rib, the sealing gasket is located in an area surrounded by the annular convex rib, and the annular convex rib is located between the periphery of the sealing gasket and the inner periphery of the lower end of the housing.

Optionally, the vacuum cleaner further includes a lower housing, the housing and the valve element are in a vertical state on the upper side of the lower housing, the housing is fixed relative to the lower housing, the lower end of the housing abuts against the lower housing, the lower housing is provided with a sealing gasket, the lower end of the valve element abuts against the sealing gasket downwards, the sealing gasket seals the lower end of the valve element, and the driving motor is fixed on the upper side of the housing.

Optionally, the valve core is further provided with a middle shaft portion, the middle shaft portion and the rotating shaft are coaxially arranged, the rotating shaft and the middle shaft portion are locked together, and the rotating shaft drives the valve core to rotate through the middle shaft portion.

Optionally, the upper end of the middle shaft part is embedded with the lower end of the rotating shaft.

Optionally, the valve device further comprises a first screw used for locking the rotating shaft and the middle shaft part together, the lower end of the rotating shaft is further provided with a threaded hole locked with the first screw in a threaded mode, a plurality of first teeth are arranged on the periphery of the lower end of the rotating shaft, a plurality of second teeth are arranged on the upper end of the middle shaft part, the lower end of the rotating shaft is embedded into the upper end of the middle shaft part, and the plurality of first teeth are meshed with the plurality of second teeth.

Optionally, the middle shaft portion is further integrally provided with a pressing portion located inside the middle shaft portion, the lower end of the second tooth is integrally connected with the pressing portion, the first screw is provided with an end seat located at the end portion of the first screw and a screw portion integrally connected with the end seat, the middle shaft portion is in a hollow tubular shape, the first screw is placed into the middle shaft portion from the lower end of the middle shaft portion, the pressing portion is provided with a first opening through which the screw portion penetrates, the screw portion penetrates through the pressing portion and is in threaded connection with the lower end of the rotating shaft, and the end seat is upwards abutted to the pressing portion.

Optionally, the dust collector still includes lower casing, well axial region is the state of putting vertically at the upside of lower casing, lower casing is equipped with the protruding portion, the lower extreme of axial region in the protruding portion embedding, the upper end of axial region in the lower extreme embedding of pivot.

Optionally, the valve element is further provided with a first top wall, the middle shaft portion is perpendicular to the first top wall, the upper end of the middle shaft portion is integrally connected with the first top wall, the housing is provided with a second top wall, the second top wall faces the first top wall downwards, the second top wall is provided with a second opening, the upper end of the middle shaft portion is embedded into the second opening, the lower end of the rotating shaft is embedded into the upper end of the middle shaft portion, and a space between the first top wall and the second top wall is communicated with a space on the upper side of the second top wall through a gap between the outer periphery of the upper end of the middle shaft portion and the inner periphery of the second opening.

Optionally, the valve core is further provided with a first top wall, the housing is covered outside the valve core, the housing is provided with a second cylinder part and a second top wall, the upper end of the second cylinder part is integrally connected with the second top wall, the second cylinder part surrounds the valve core, the second top wall faces the first top wall downwards, and the driving motor is locked on the housing.

Optionally, the housing is further provided with a frame, the frame is located on the upper side of the second top wall and integrally connected with the second top wall, the frame is located on the periphery of the driving motor, and the driving motor is locked on the frame.

Optionally, the driving motor is mounted and fixed to the upper side of the second top wall, the first top wall is close to the second top wall, the first top wall faces the second top wall upwards, the first top wall is provided with spaced ribs, the spaced ribs protrude upwards from the upper surface of the first top wall, and the spaced ribs are circular rings surrounding the rotation axis of the valve core.

Optionally, the vacuum cleaner further comprises a second filter, and when the fan performs suction and the valve core is in the first angular position, air filtered by the second filter also flows through the valve device; the housing is provided with a first ventilation opening and a second ventilation opening, the valve core is provided with a channel, and when the valve core is positioned at a first angle position, the first ventilation opening is communicated between the first filter and a suction air opening of the fan, and the second ventilation opening is communicated between the second filter and the suction air opening of the fan; when the valve core is positioned at a second angle position, the first ventilation opening is communicated between the first filter and the channel, and the second ventilation opening is communicated between the second filter and a suction air opening of the fan; when the valve core is located at the third angle position, the first ventilation opening is communicated between the first filter and the suction air opening of the fan, and the second ventilation opening is communicated between the second filter and the channel.

Optionally, the housing is provided with a first air outlet, and when the fan performs suction and the valve core is located at the first angle position, the airflow filtered by the first filter flows through at least the first ventilation opening and the first air outlet in sequence in the process of flowing to the suction air opening of the fan, and the airflow filtered by the second filter flows through at least the second ventilation opening and the first air outlet in sequence in the process of flowing to the suction air opening of the fan; when the fan sucks and the valve core is positioned at a second angle position, the airflow filtered by the second filter flows through at least the second ventilation opening and the first air outlet in sequence in the process of flowing to the suction air opening of the fan, and the air flows through at least the channel, the first ventilation opening and the first filter in sequence in the process of reversely flowing into the dust collection container; when the fan sucks and the valve core is located at the third angle position, the airflow filtered by the first filter flows through at least the first ventilation opening and the first air outlet in sequence in the process of flowing to the suction air opening of the fan, and the air flows through at least the channel, the second ventilation opening and the second filter in sequence in the process of reversely flowing into the dust collection container.

Optionally, the housing is further provided with a second cylinder portion, the second cylinder portion surrounds the valve core, and the first ventilation opening, the second ventilation opening and the first air outlet are respectively formed in the second cylinder portion.

Optionally, the valve core is further provided with a middle shaft portion, a first top wall, a first cylinder portion, a first blocking wall, a second blocking wall, the first blocking wall and the second blocking wall extend to the first cylinder portion from the middle shaft portion respectively, the channel is formed between the first blocking wall and the second blocking wall, the first cylinder portion surrounds the middle shaft portion, the dust collector further comprises a sealing gasket, the lower end of the middle shaft portion, the lower end of the first blocking wall and the lower end of the second blocking wall are connected downwards to the sealing gasket respectively, and the upper end of the first blocking wall and the upper end of the second blocking wall are connected with the first top wall integrally respectively.

Optionally, the dust collector further comprises a tray, a lower housing located at the lower side of the tray, and an upper housing located at the upper side of the tray, the second cylinder portion is further provided with a first back-blowing air inlet and a second back-blowing air inlet, the first vent, the second vent, and the first air outlet are located between the tray and the lower housing, the first back-blowing air inlet and the second back-blowing air inlet are located between the tray and the upper housing, and when the valve core is located at the second angular position, the first vent is communicated with the first back-blowing air inlet through a channel; when the valve core is positioned at the third angle position, the second ventilation opening is communicated with the second back-blowing air inlet through the channel.

Optionally, the housing is locked to the tray, the tray is provided with a first mounting opening, the upper shell is provided with a second mounting opening, the second cylinder portion is cylindrical, the second cylinder portion penetrates through the first mounting opening, the lower end of the second cylinder portion abuts against the lower shell, the housing is further provided with a second top wall, and the second top wall plugs the second mounting opening; the first air vent, the second air vent and the first air outlet are arranged side by side in the circumferential direction of the second cylinder part.

Optionally, the channel is provided with a reverse blowing air inlet and a reverse blowing air outlet, the reverse blowing air inlet forms an air inlet of the channel, the reverse blowing air outlet forms an air outlet of the channel, and the second cylinder part is further provided with a first reverse blowing air inlet and a second reverse blowing air inlet; when the valve core is positioned at the first angle position, the valve core seals the first back-blowing air inlet and the second back-blowing air inlet; when the valve core is positioned at a second angle position, the first back-blowing air inlet is communicated with the back-blowing air inlet, and the valve core seals the second back-blowing air inlet; when the valve core is located at the third angle position, the second back-blowing air inlet is communicated with the back-blowing air inlet, and the valve core seals the first back-blowing air inlet.

Optionally, when the valve core is located at the second angle position, the first blowback air inlet is aligned with the blowback air inlet in the radial direction of the second cylinder part and communicated with the blowback air inlet, and the first vent is aligned with the blowback air outlet in the radial direction of the second cylinder part and communicated with the blowback air outlet; when the valve core is positioned at the third angle position, the second back-blowing air inlet is aligned with the back-blowing air inlet in the radial direction of the second cylinder part and communicated with the back-blowing air inlet, and the second air outlet is aligned with the back-blowing air outlet in the radial direction of the second cylinder part and communicated with the back-blowing air outlet.

Optionally, the valve core is further provided with a first cylinder part, the second cylinder part is sleeved outside the first cylinder part, the back-blowing air inlet and the back-blowing air outlet are opened in the first cylinder part, and when the valve core is located at the first angle position, the first cylinder part seals the first back-blowing air inlet and the second back-blowing air inlet; when the valve core is positioned at a second angle position, the first cylinder part seals the second back-blowing air inlet; when the valve core is located at the third angle position, the first barrel part seals the first back-blowing air inlet.

Optionally, the vacuum cleaner further includes a gasket, the valve core is further provided with a first cylinder portion and a first top wall, the upper end of the first cylinder portion is integrally connected with the first top wall, the lower end of the first cylinder portion is downwardly abutted to the gasket, and the lower end of the first cylinder portion is in a circular ring shape surrounding the rotation axis of the valve core.

Optionally, when the fan performs suction and the valve core is at the second angle position, the airflow filtered by the second filter flows through at least the second ventilation opening and the first air outlet in sequence in the process of flowing to the suction air opening of the fan, and flows through at least the first back-blowing air inlet, the channel, the back-blowing air outlet, the first ventilation opening and the first filter in sequence in the process of flowing back the air into the dust collecting container; when the fan sucks and the valve core is positioned at a third angle position, the airflow filtered by the first filter flows through at least a first vent and a first air outlet in sequence in the process of flowing to a suction air inlet of the fan, and the air flows through at least a second back-blowing air inlet, a channel, a back-blowing air outlet, a second vent and a second filter in sequence in the process of flowing back to the dust collecting container; the areas of the first back-blowing air inlet, the back-blowing air inlet and the back-blowing air outlet are not smaller than that of the first vent, and the areas of the second back-blowing air inlet, the back-blowing air inlet and the back-blowing air outlet are not smaller than that of the second vent.

Optionally, when the valve core is located at the first angle position, the back-blowing air inlet is staggered with the first back-blowing air inlet and the second back-blowing air inlet, and the back-blowing air outlet is staggered with the first ventilation opening and the second ventilation opening; when the valve core is positioned at a second angle position, the back-blowing air inlet is communicated with the first back-blowing air inlet and staggered with the second back-blowing air inlet, and the back-blowing air outlet is communicated with the first ventilation opening and staggered with the second ventilation opening; when the valve core is located at the third angle position, the back-blowing air inlet is staggered with the first back-blowing air inlet and communicated with the second back-blowing air inlet, and the back-blowing air outlet is staggered with the first vent and communicated with the second vent.

Optionally, the dust collector further comprises a tray, a lower housing located on the lower side of the tray, and an upper housing located on the upper side of the tray, wherein the first vent, the second vent, and the first air outlet are respectively located between the tray and the lower housing, and the first blowback air inlet and the second blowback air inlet are respectively located between the tray and the upper housing; the dust collector is further provided with a first air chamber, a second air chamber and a third air chamber, the first air chamber, the second air chamber and the third air chamber are formed by space separation between the tray and the lower shell, the first vent faces the first air chamber, the second vent faces the second air chamber, the first air outlet faces the third air chamber, the fan sucks air, and when the valve core is located at the first angle position, the air flow filtered by the first filter flows to the suction air port of the fan and sequentially flows through at least the first air chamber, the first vent, the first air outlet and the third air chamber, and the air flow filtered by the second filter flows to the suction air port of the fan and sequentially flows through at least the second air chamber, the second vent, the first air outlet and the third air chamber.

Optionally, the dust collector further includes a first partition wall, a second partition wall, a third partition wall, and an annular enclosure, the first partition wall, the second partition wall, the third partition wall, and the annular enclosure are located between the tray and the lower housing, the first partition wall is used to separate the first air chamber and the third air chamber, the second partition wall is used to separate the second air chamber and the third air chamber, the third partition wall is used to separate the first air chamber and the second air chamber, the first air chamber, the second air chamber, and the third air chamber are formed by separating a space surrounded by the annular enclosure, the annular enclosure surrounds the periphery of the enclosure, one end of the first partition wall extends to the enclosure, and the opposite end of the first partition wall extends to the annular enclosure; one end of the second isolation wall extends to the housing, and the other end of the second isolation wall, which is opposite to the housing, extends to the annular enclosing wall; one end of the third partition wall extends to the housing and the opposite end of the third partition wall extends to the annular enclosure.

Optionally, the first air vent is located between one end of the first partition wall extending to the enclosure and one end of the third partition wall extending to the enclosure, the second air vent is located between one end of the second partition wall extending to the enclosure and one end of the third partition wall extending to the enclosure, and the first air vent is located between one end of the first partition wall extending to the enclosure and one end of the second partition wall extending to the enclosure.

Optionally, the lower housing is further provided with a first ventilation port and a second ventilation port, the first ventilation port is in butt joint with the first filter, and the second ventilation port is in butt joint with the second filter; when the valve core is positioned at the first angle position, the airflow filtered by the first filter at least sequentially flows through the first ventilation port, the first air chamber, the first ventilation opening, the first air outlet and the third air chamber in the process of flowing to the suction air opening of the fan, and the airflow filtered by the second filter at least sequentially flows through the second ventilation port, the second air chamber, the second ventilation opening, the first air outlet and the third air chamber in the process of flowing to the suction air opening of the fan; when the fan sucks and the valve core is positioned at a second angle position, the air flow filtered by the second filter flows through at least a second ventilation port, a second air chamber, a second ventilation port, a first air outlet and a third air chamber in sequence in the process of flowing to a suction air port of the fan, and the air flows through at least a first back-blowing air inlet, a channel, a back-blowing air outlet, a first ventilation port, a first air chamber, a first ventilation port and a first filter in sequence in the process of flowing back into the dust collecting container; when the fan sucks and the valve core is located at the third angle position, the air flow filtered by the first filter flows to the suction air port of the fan, and sequentially flows through at least the first ventilation port, the first air chamber, the first ventilation port, the first air outlet and the third air chamber, and sequentially flows through at least the second back-blowing air inlet, the channel, the back-blowing air outlet, the second ventilation port, the second air chamber, the second ventilation port and the second filter in the process that the air reversely flows into the dust collecting container.

Optionally, the vacuum cleaner further includes a fourth air chamber, the fourth air chamber is formed between the upper housing and the tray, the housing and the blower are respectively at least partially accommodated in the fourth air chamber, the first and second blowback air inlets are respectively exposed in the fourth air chamber, and air sucked by the blower through the suction air inlet is discharged into the fourth air chamber; when the valve core is positioned at the second angle position, at least part of air discharged into the fourth air chamber by the fan flows through at least a first back-blowing air inlet, a channel, a back-blowing air outlet, a first ventilation opening, a first air chamber and a first filter in sequence in the process of flowing back into the dust collecting container; when the valve core is positioned at the third angle position, at least part of air discharged into the fourth air chamber by the fan flows through at least a second back-blowing air inlet, a channel, a back-blowing air outlet, a second ventilation opening, a second air chamber and a second filter in sequence in the process of flowing back into the dust collecting container.

[ description of the drawings ]

FIG. 1 is a perspective view of a vacuum cleaner of the present application;

FIG. 2 is a partially exploded view of the vacuum cleaner of the present application;

FIG. 3 is another partially exploded view of the vacuum cleaner of the present application;

FIG. 4 is a further partially exploded view of the vacuum cleaner of the present application;

FIG. 5 is a top cross-sectional view of the vacuum cleaner of the present application (with the cross-section taken in a horizontal plane and the first blow-back air inlet shown in cross-section);

FIG. 6 is another top cross-sectional view of the vacuum cleaner of the present application (with the cross-section taken in a horizontal plane and the first vent shown in cross-section);

FIG. 7 is a longitudinal cross-sectional view of the vacuum cleaner of the present application (with the cross-section being vertical and cut through the central shaft portion, the valve cartridge being in a first angular position);

FIG. 8 is an enlarged view of a portion of FIG. 7;

FIG. 9 is a perspective view of the valve assembly of the vacuum cleaner of the present application (with the valve cartridge in a first angular position);

FIG. 10 is another perspective view of the valve assembly of the vacuum cleaner of the present application (with the valve cartridge in a first angular position);

FIG. 11 is a further perspective view of the valve assembly of the vacuum cleaner of the present application (with the valve cartridge in a second angular position);

FIG. 12 is a fourth perspective view of the valve assembly of the vacuum cleaner of the present application (with the valve cartridge in the second angular position);

figure 13 is an exploded view of the valve assembly of the vacuum cleaner of the present application;

figure 14 is another exploded view of the valve assembly of the vacuum cleaner of the present application;

figure 15 is a further exploded view of the valve assembly of the vacuum cleaner of the present application.

[ detailed description ] embodiments

Referring to fig. 1 to 15, a vacuum cleaner includes a dust collecting container 90, a blower fan 91, a first filter 920, a second filter 921, and a valve device. The dust collecting container 90 is generally cylindrical, and the first filter 920 and the second filter 921 may be cylindrical filters, respectively, and the first filter 920 and the second filter 921 are substantially accommodated in the dust collecting container 90. The blower 91 provides power for sucking garbage, the blower 91 comprises a motor 910, an impeller (not shown) driven by the motor 910 to rotate, and a suction air port 912, the motor 910 drives the impeller to rotate to drive air to form a suction air flow so as to suck the garbage into the dust collecting container 90, and the rated power of the motor 910 is between 90w and 2900 w; a suction port 912 of the fan 91 is located at the bottom of the fan 91, and the fan 91 operates to suck air through the suction port 912. The valve device comprises a housing 1, a valve core 2 and a driving motor 3, wherein the housing 1 is fixedly arranged, the valve core 2 can rotate relative to the housing 1 under the driving of the driving motor 3, the valve core 2 is at least partially accommodated in the housing 1, the driving motor 3 is provided with a rotating shaft 30 capable of driving the valve core 2 to rotate relative to the housing 1, when the fan 91 sucks air and the valve core 2 is in a first angle position, the air filtered by a first filter 920 flows through the valve device and the valve core 2 bears downward air pressure; the rotating shaft 30 is locked with the valve core 2, so that the rotating shaft 30 can hang the valve core 2, and by the design, although the valve core 2 bears downward air pressure when the fan 91 works, the rotating shaft 30 can resist the downward pressing of the air pressure on the valve core 2 because the rotating shaft 30 hangs the valve core 2, and the valve core 2 is effectively prevented from sinking downward under the downward air pressure. The valve device is positioned in the dust collector and is in a vertical state, and the rotating shaft 30 is vertically arranged.

The valve core 2 can rotate from the first angle position to the second angle position along a rotation direction relative to the housing 1, and can rotate from the first angle position to the third angle position against the rotation direction relative to the housing 1, optionally, the first angle and the second angle are respectively 65 degrees to 85 degrees, and in this embodiment, the first angle and the second angle are respectively 71 degrees. When the blower fan 91 is sucking and the valve core 2 is at the first angle position, the garbage enters the dust collecting container 90 through the dirt suction port 900, and at this time, the air filtered by the first filter 920 and the air filtered by the second filter 921 flow through the valve device; when the fan 91 is sucking and the spool 2 is in the second angular position, the air filtered by the second filter 921 flows through the valve device and the spool 2 is subjected to a downward air pressure; when the blower 91 is drawing and the cartridge 2 is in the third angular position, air filtered by the first filter 920 flows through the valve arrangement and the cartridge 2 is subjected to a downward air pressure.

The valve core 2 is located below the driving motor 3, the valve core 2 is provided with a first top wall 20, the first top wall 20 is in a circular plate shape, the first top wall 20 is located at the top of the valve core 2, when the fan 91 performs suction and the valve core 2 is located at a first angle position, air filtered by the first filter 920 flows between the first top wall 20 and the lower end of the valve core 2 in the process of flowing to the suction air port 912 of the fan 91, and air filtered by the second filter 921 flows between the first top wall 20 and the lower end of the valve core 2 in the process of flowing to the suction air port 912 of the fan 91, and at this time, the first top wall 20 bears downward air pressure (namely, the air pressure at the upper side and the lower side of the first top wall 20 is downward after being superposed); when the fan 91 performs suction and the valve core 2 is at the second angular position, the air filtered by the second filter 921 flows between the first ceiling wall 20 and the lower end of the valve core 2 in the process of flowing to the suction air port 912 of the fan 91, and at this time, the first ceiling wall 20 bears downward air pressure; when the blower 91 performs suction and the valve element 2 is at the third angular position, the air filtered by the first filter 920 flows between the first ceiling wall 20 and the lower end of the valve element 2 in the process of flowing to the suction port 912 of the blower 91, and at this time, the first ceiling wall 20 receives downward air pressure. Since the suction airflow flows between the first top wall 20 and the lower end of the valve element 2, a negative pressure state (relative to the atmospheric pressure) is caused to occur below the first top wall 20, so that the first top wall 20 receives downward air pressure as a whole, and further the valve element 2 receives downward air pressure as a whole (i.e. the air pressure received by each part of the valve element 2 is downward after being superposed), and the rotating shaft 30 suspends the valve element 2, so that the valve element 2 can be effectively prevented from sinking downward under the downward air pressure.

The dust collector also comprises a sealing gasket 40, wherein the sealing gasket 40 is fixed relative to the housing 1, the sealing gasket 40 is positioned below the valve core 2, the valve core 2 is in a vertical state on the upper side of the sealing gasket 40, the lower end of the valve core 2 is abutted against the sealing gasket 40, and the lower end of the valve core 2 is in sliding friction with the upper surface of the sealing gasket 40 when the valve core 2 rotates relative to the housing 1 under the driving of the driving motor 3. If the valve core 2 sinks downwards under the downward air pressure, the downward pressure of the valve core 2 on the sealing gasket 40 is aggravated, so that the friction force between the valve core 2 and the sealing gasket 40 is obviously increased when the valve core 2 rotates, the valve core 2 is difficult to rotate, the valve core 2 can rotate only by the larger driving force of the driving motor 3, and the valve core 2 is locked with the rotating shaft 30 and hung by the rotating shaft 30, so that the valve core 2 is restrained from sinking downwards under the downward air pressure, and the problems can be effectively overcome.

The dust collector also comprises a tray 7, a lower shell 4, an upper shell 5 and an outer shell 95, wherein the lower shell 4 is positioned at the lower side of the tray 7, the upper shell 5 is positioned at the upper side of the tray 7, the lower shell 4 and the upper shell 5 are respectively locked on the tray 7 through screws, and the outer shell 95 covers the upper side of the upper shell 5; the housing 1 and the valve core 2 are in a vertical state on the upper side of the lower shell 4, the lower end of the valve core 2 is downwards pressed against the sealing gasket 40, and the lower end of the valve core 2 is sealed by the sealing gasket 40. First filter 920, second filter 921 are respectively detachably mounted to lower casing 4, first filter 920, second filter 921 are located the downside of lower casing 4, the valve device is located the upside of lower casing 4, housing 1 is fixed for lower casing 4, the lower extreme of housing 1 abuts against lower casing 4, sealing gasket 40 pastes at the upper surface of lower casing 4 and constitutes a part of lower casing 4, the lower extreme of housing 1 encircles sealing gasket 40. The sealing gasket 40 is pasted on the upper surface of the lower shell 4, the sealing gasket 40 is in a circular plate shape, the sealing gasket 40 comprises an inner sponge layer and an outer PET (Polyethylene terephthalate) film, the PET film of the sealing gasket 40 is pasted with the sponge layer, the PET film of the sealing gasket 40 is in contact with the lower end of the valve core 2, the PET film of the sealing gasket 40 is relatively smooth, and the friction force generated by the PET film and the lower end of the valve core 2 is relatively small. The lower case 4 is further provided with an annular rib 41, the gasket 40 is located in a region surrounded by the annular rib 41, and the annular rib 41 is located between the outer periphery of the gasket 40 and the lower end inner periphery of the housing 1. The outer diameter of the seal 40 is substantially the same as the inner diameter of the annular rib 41.

The valve core 2 is further provided with a middle shaft part 21, the middle shaft part 21 and the rotating shaft 30 are coaxially arranged, the middle shaft part 21 is parallel to the rotating axis of the valve core 2, the rotating shaft 30 and the middle shaft part 21 are locked together, the rotating shaft 30 drives the valve core 2 to rotate through the middle shaft part 21, the middle shaft part 21 extends along the up-down direction, and the upper end of the middle shaft part 21 is embedded with the lower end of the rotating shaft 30. The valve device further comprises a first screw 93 used for locking the rotating shaft 30 and the middle shaft part 21 together, a plurality of first teeth 300 are arranged on the periphery of the lower end of the rotating shaft 30, a plurality of second teeth 210 are arranged on the upper end of the middle shaft part 21, the lower end of the rotating shaft 30 is embedded into the upper end of the middle shaft part 21, the plurality of first teeth 300 are meshed with the plurality of second teeth 210, so that the rotating shaft 30 is reliably in transmission connection with the valve core 2, and a threaded hole 301 locked with the first screw 93 in a threaded mode is further formed in the lower end of the rotating shaft 30. The middle shaft part 21 is further integrally provided with a pressing part 211 located inside, the lower end of the second tooth 210 is integrally connected with the pressing part 211, the first screw 93 is provided with an end seat 930 located at the end part of the first screw and a screw part 931 integrally connected with the end seat 930, the pressing part 211 is provided with a first opening 2110 through which the screw part 931 passes, the screw part 931 passes through the pressing part 211 and is in threaded connection with the lower end of the rotating shaft 30, the pressing part 211 is clamped between the lower end of the rotating shaft 30 and the end seat 930, the lower end of the rotating shaft 30 downwardly abuts against the pressing part 211, the end seat 930 upwardly abuts against the pressing part 211, the middle shaft part 21 is in a tubular shape with a through top and bottom, and the first screw 93 is placed into the middle shaft part 21 from the lower end of the middle shaft part 21. The locking of the drive motor 3 to the valve cartridge 2 is performed by: the first screw 93 is put into the middle shaft part 21 from the lower end of the middle shaft part 21, the first screw 93 is moved to the pressing part 211 through the inner space of the middle shaft part 21, the screw 931 penetrates through the pressing part 211 and penetrates into the threaded hole 301 at the lower end of the rotating shaft 30, and the screw 931 is locked to the threaded hole 301 until the lower end of the rotating shaft 30 and the end seat 930 tightly clamp the pressing part 211. The pressing portion 211 is located at the upper end of the middle shaft portion 21. The middle shaft part 21 is vertically arranged on the upper side of the lower shell 4, the middle shaft part 21 is in a hollow tubular shape, the lower shell 4 is further provided with a protruding part 42, the sealing gasket 40 is provided with a hole for the protruding part 42 to penetrate out upwards, the protruding part 42 protrudes upwards from the sealing gasket 40, the protruding part 42 is embedded into the lower end of the middle shaft part 21, and the protruding part 42 is located in the center of the area encircled by the annular convex rib 41. Middle shaft part 21 is perpendicular to first roof 20, middle shaft part 21's upper end and first roof 20 body coupling, housing 1 is equipped with second roof 10, second roof 10 is the disc form, second roof 10 is downward to first roof 20, middle shaft part 21 is perpendicular to second roof 10, second roof 10 is equipped with second trompil 100, middle shaft part 21's upper end embedding second trompil 100, the space between first roof 20 and the second roof 10 is through the space intercommunication of the upper side of clearance between the upper end periphery of middle shaft part 21 and the second trompil 100 internal periphery and the second roof 10. The space on the upper side of the second top wall 10 belongs to a part of a fifth air chamber 68 (described in detail later), and is substantially in a normal pressure state (i.e. approximately equal to the atmospheric pressure), when the suction airflow of the fan 91 flows through the lower side of the first top wall 20, a negative pressure state (relative to the atmospheric pressure) will occur below the first top wall 20, so that the air pressure difference between the upper side and the lower side of the first top wall 20 is still relatively large, and the first top wall 20 is subjected to a relatively large downward air pressure.

The driving motor 3 is fixed on the upper side of the housing 1, the housing 1 covers the outer side of the valve core 2, the valve core 2 is installed into the housing 1 from the lower end of the housing 1, the second top wall 10 is located between the driving motor 3 and the first top wall 20, and the driving motor 3 is fixedly locked on the housing 1. The housing 1 is further provided with a frame 11, the frame 11 is located on the upper side of the second top wall 10 and is integrally connected with the second top wall 10, the frame 11 is framed on the periphery of the driving motor 3, and the driving motor 3 is locked on the frame 11. The driving motor 3 is provided with a plurality of positioning holes 31, the frame 11 is provided with a plurality of positioning protrusions 110 positioned in the corresponding positioning holes 31, the valve device is further provided with a pressing strip 94, the pressing strip 94 is pressed on the driving motor 3, and two ends of the pressing strip 94 are locked with the frame 11 through screws.

The driving motor 3 is fixedly installed on the upper side of the second top wall 10, the first top wall 20 is close to the second top wall 10, the distance between the first top wall 20 and the second top wall 10 is smaller than 2 mm, the first top wall 20 is parallel to the second top wall 10, the first top wall 20 is provided with a spacing convex rib 200, and the spacing convex rib 200 protrudes upwards from the upper surface of the first top wall 20. In principle, it is better that the first top wall 20 and the second top wall 10 do not contact with each other, so that when the valve core 2 rotates relative to the housing 1, there is no friction between the first top wall 20 and the second top wall 10, because the driving motor 3, the valve core 2 and the housing 1 have a certain dimension error and the mounting error after the three are mounted together is difficult to avoid absolutely, in addition, when the first top wall 20 and the second top wall 10 are formed, there is a certain deformation, which may cause the first top wall 20 and the second top wall 10 to abut against each other in a large area, if the first top wall 20 and the second top wall 10 abut against each other in a large area, the friction force between the first top wall 20 and the second top wall 10 is large when the valve core 2 rotates, so as to increase the resistance of the valve core 2 rotating relative to the housing 1, the spacing convex rib 200 can effectively separate the first top wall 20 from the second top wall 10, and inhibit the first top wall 20 from abutting against the second top wall 10 in a large area, it is beneficial for the driving motor 3 to drive the valve core 2 to rotate relative to the housing 1 more easily. The spacing ribs 200 are circular rings that encircle the axis of rotation of the valve element 2, and the axis of rotation of the valve element 2 constitutes the central axis of the spacing ribs 200.

When the fan 91 is pumping and the cartridge 2 is in the first angular position, the air filtered by the second filter 921 flows through the valve means; the housing 1 is provided with a first ventilation opening 120 and a second ventilation opening 121, the valve core 2 is provided with a channel 22, when the valve core 2 is at a first angle position, the first ventilation opening 120 is communicated between the first filter 920 and a suction air opening 912 of the fan 91, and at the moment, the second ventilation opening 121 is communicated between the second filter 921 and the suction air opening 912 of the fan 91; when the valve core 2 is at the second angle position, the first ventilation opening 120 is communicated between the first filter 920 and the channel 22, and the second ventilation opening 121 is communicated between the second filter 921 and the suction air opening 912 of the fan 91; when the valve core 2 is at the third angle position, the first ventilation opening 120 is communicated between the first filter 920 and the suction air opening 912 of the fan 91, and at this time, the second ventilation opening 121 is communicated between the second filter 921 and the channel 22. By the design, when the valve core 2 is at the second angle position, a back-blowing air path for the first filter 920 is formed in the dust collector, and is used for back-blowing the first filter 920 to remove the blockage of the first filter 920; when the valve core 2 is at the third angular position, a back-blowing air path for the second filter 921 is formed in the vacuum cleaner, and is used for back-blowing the second filter 921 to remove the blockage of the second filter 921. The lower end of the channel 22 is closed by a gasket 40 and the upper end of the channel 22 is closed by the first top wall 20.

The fan 91 draws and there is a reverse flow of air into the dust collecting container 90 when the valve element 2 is in the second angular position, and the fan 91 draws and there is a reverse flow of air into the dust collecting container 90 when the valve element 2 is in the third angular position, the reverse flow of air acting to clean the filter. The housing 1 is further provided with a first air outlet 122, when the valve core 2 is at the first angle position, the first air vent 120 and the second air vent 121 are respectively communicated with the first air outlet 122, and at this time, under the suction of the fan 91, the air flow filtered by the first filter 920 sequentially flows through at least the first air vent 120 and the first air outlet 122 in the process of flowing to the suction air outlet 912 of the fan 91, and the air flow filtered by the second filter 921 sequentially flows through at least the second air vent 121 and the first air outlet 122 in the process of flowing to the suction air outlet 912 of the fan 91; when the valve core 2 is at the second angle position, the second ventilation opening 121 is communicated with the first ventilation opening 122, and at this time, under the suction of the fan 91, the air flow filtered by the second filter 921 flows through at least the second ventilation opening 121 and the first ventilation opening 122 in sequence in the process of flowing to the suction opening 912 of the fan 91, and flows through at least the channel 22, the first ventilation opening 120 and the first filter 920 in sequence in the process of flowing back to the dust collecting container 90; when the valve core 2 is at the third angle position, the first ventilation opening 120 is communicated with the first air outlet 122, and at this time, under the suction of the fan 91, the air flow filtered by the first filter 920 flows through at least the first ventilation opening 120 and the first air outlet 122 in sequence in the process that the air flow flows to the suction air opening 912 of the fan 91, and flows through at least the channel 22, the second ventilation opening 121 and the second filter 921 in sequence in the process that the air flows back into the dust collecting container 90. When the valve core 2 is at the first angle position, the dust collector can normally perform the work of sucking the garbage, the garbage is sucked into the dust collecting container 90 along with the sucked air flow, the sucked air flow further flows through the first filter 920 and the second filter 921 in the positive direction, and the garbage is filtered; when the valve core 2 is at the second angle position or the third angle position, the dust collector can clean the filter in a blocking way; when the valve core 2 is at the second angular position, at this time, under the suction of the fan 91, the airflow still flows through the second filter 921 in the forward direction for the second filter 921, and flows through the first filter 920 in the reverse direction for the first filter 920, so that the first filter 920 is blown back to gradually remove the blockage of the first filter 920; when the valve core 2 is at the third angular position, under the suction of the blower 91, the air flow is positive for the first filter 920 to flow through the first filter 920, and is reverse for the second filter 921 to flow through the second filter 921, so that the second filter 921 is blown back to gradually remove the blockage of the second filter 921.

The housing 1 is further provided with a second cylinder portion 12, the second cylinder portion 12 surrounds the valve element 2, the upper end of the second cylinder portion 12 is integrally connected with the second ceiling wall 10, the upper end of the second cylinder portion 12 is connected with the periphery of the second ceiling wall 10, and the first ventilation opening 120, the second ventilation opening 121, and the first air outlet 122 are respectively opened in the second cylinder portion 12. The second cylinder 12 is further provided with a first blowback air inlet 123 and a second blowback air inlet 124, the first ventilation opening 120, the second ventilation opening 121 and the first air outlet 122 are located between the tray 7 and the lower shell 4, and the first blowback air inlet 123 and the second blowback air inlet 124 are located between the tray 7 and the upper shell 5. When the valve core 2 is at the second angle position, the first vent 120 is communicated with the first blowback air inlet 123 through the channel 22; when the valve core 2 is at the third angle position, the second ventilation opening 121 is communicated with the second blowback air inlet 124 through the channel 22. The housing 1 is locked on the tray 7, the tray 7 is provided with a first mounting opening 70, the upper shell 5 is provided with a second mounting opening 50, the second cylinder part 12 is cylindrical, the second cylinder part 12 penetrates through the first mounting opening 70, the lower end of the second cylinder part 12 is abutted against the lower shell 4, and the second top wall 10 blocks the second mounting opening 50; the first air vent 120, the second air vent 121, and the first air outlet 122 are arranged side by side in the circumferential direction of the second tube 12. A flexible sealing gasket 51 is mounted on the periphery of the second mounting opening 50, the periphery of the second top wall 10 is abutted against the flexible sealing gasket 51, and the driving motor 3 and the frame 11 are positioned on the upper side of the second mounting opening 50. The second tube portion 12 is provided with an annular flange 125 around the outer periphery thereof, the annular flange 125 abuts against the periphery of the first mounting opening 70, the first mounting opening 70 and the second mounting opening 50 are circular, and the annular flange 125 is fastened to the tray 7 by screws.

The channel 22 is provided with a back-blowing air inlet 220 and a back-blowing air outlet 221, the back-blowing air inlet 220 forms an air inlet of the channel 22, the back-blowing air outlet 221 forms an air outlet of the channel 22, and the second barrel part 12 is further provided with a first back-blowing air inlet 123 and a second back-blowing air inlet 124; when the valve core 2 is at the first angle position, the valve core 2 seals the first blowback air inlet 123 and the second blowback air inlet 124; when the valve core 2 is at the second angle position, the first blowback air inlet 123 is communicated with the blowback air inlet 220 and the valve core 2 seals the second blowback air inlet 124; when the valve core 2 is at the third angle position, the second blowback air inlet 124 is communicated with the blowback air inlet 220 and the valve core 2 closes the first blowback air inlet 123. When the valve core 2 is at the second angle position, the first blowback air inlet 123 is aligned with and communicated with the blowback air inlet 220 in the radial direction of the second cylinder part 12, and the first vent 120 is aligned with and communicated with the blowback air outlet 221 in the radial direction of the second cylinder part 12; when the valve core 2 is at the third angular position, the second blowback air inlet 124 is aligned with and communicated with the blowback air inlet 220 in the radial direction of the second cylinder 12, and the second blowback air outlet 121 is aligned with and communicated with the blowback air outlet 221 in the radial direction of the second cylinder 12.

The valve core 2 is further provided with a first cylinder part 23, the first cylinder part 23 is approximately cylindrical, the first cylinder part 23 is perpendicular to the first top wall 20, the lower end of the first cylinder part 23 is downwards abutted to the sealing gasket 40, the lower end of the first cylinder part 23 is in a circular ring shape surrounding the rotation axis of the valve core 2, the upper end of the first cylinder part 23 is integrally connected with the first top wall 20, the upper end of the first cylinder part 23 is connected with the periphery of the first top wall 20, the second cylinder part 12 is sleeved outside the first cylinder part 23, the reverse blowing air inlet 220 and the reverse blowing air outlet 221 are arranged on the first cylinder part 23, and when the valve core 2 is at a first angle position, the first cylinder part 23 seals the first reverse blowing air inlet 123 and the second reverse blowing air inlet 124; when the valve core 2 is at the second angle position, the first cylinder part 23 seals the second back flushing air inlet 124; when the valve body 2 is at the third angular position, the first cylinder portion 23 closes the first blowback air inlet 123. The valve core 2 is further provided with a first blocking wall 240 and a second blocking wall 241, the first blocking wall 240 and the second blocking wall 241 extend from the middle shaft portion 21 to the first barrel portion 23 respectively, the channel 22 is formed between the first blocking wall 240 and the second blocking wall 241, the first barrel portion 23 surrounds the middle shaft portion 21, the lower end of the first blocking wall 240 and the lower end of the second blocking wall 241 are connected with the sealing gasket 40 downwards respectively, and the upper end of the first blocking wall 240 and the upper end of the second blocking wall 241 are connected with the first top wall 20 integrally respectively. The first cylinder part 23 and the second cylinder part 12 are coaxially arranged, the first cylinder part 23 is provided with the sealing layer 230, the sealing layer 230 is sufficiently distributed on the outer peripheral surface of the first cylinder part, the overall shape of the sealing layer 230 is approximately equivalent to that of the first cylinder part 23, the outer periphery of the first cylinder part 23 is tightly attached to the inner surface of the second cylinder part 12 through the sealing layer 230, and therefore air flow between the inner periphery of the second cylinder part 12 and the outer periphery of the first cylinder part 23 is effectively restrained. The sealing layer 230 of the present embodiment is integrally rolled into a coil and adhered and fixed to form a surface layer of the outer periphery of the first cylinder 23, the sealing layer 230 includes an inner sponge layer and an outer PET film, the PET film of the sealing layer 230 is adhered to the sponge layer, and the outer PET film of the sealing layer 230 is smooth and suitable for contacting the inner peripheral surface of the second cylinder 12 and sliding friction with the inner surface of the second cylinder 12 during rotation of the valve body 2 relative to the housing 1.

When the fan 91 performs suction and the valve core 2 is at the second angle position, the airflow filtered by the second filter 921 sequentially flows through at least the second air vent 121 and the first air outlet 122 in the process of flowing to the suction air vent 912 of the fan 91, and sequentially flows through at least the first back-blowing air inlet 123, the back-blowing air inlet 220, the channel 22, the back-blowing air outlet 221, the first air vent 120 and the first filter 920 in the process of flowing back the air into the dust collecting container 90; when the fan 91 performs suction and the valve core 2 is at the third angular position, the airflow filtered by the first filter 920 sequentially flows through at least the first vent 120 and the first air outlet 122 in the process of flowing to the suction air port 912 of the fan 91, and sequentially flows through at least the second blowback air inlet 124, the blowback air inlet 220, the channel 22, the blowback air outlet 221, the second vent 121 and the second filter 921 in the process of flowing back the air into the dust collecting container 90; the areas of the first back-blowing air inlet 123, the back-blowing air inlet 220 and the back-blowing air outlet 221 are not smaller than that of the first vent 120, and the areas of the second back-blowing air inlet 124, the back-blowing air inlet 220 and the back-blowing air outlet 221 are not smaller than that of the second vent 121; in this embodiment, the area of the first blowback air inlet 123 and the area of the second blowback air inlet 124 are smaller than the area of the blowback air inlet 220.

When the valve core 2 is at the first angle position, the back-blowing air inlet 220 is staggered with the first back-blowing air inlet 123 and the second back-blowing air inlet 124, and the back-blowing air outlet 221 is staggered with the first ventilation opening 120 and the second ventilation opening 121; when the valve core 2 is at the second angle position, the back-blowing air inlet 220 is communicated with the first back-blowing air inlet 123 and staggered with the second back-blowing air inlet 124, and the back-blowing air outlet 221 is communicated with the first ventilation opening 120 and staggered with the second ventilation opening 121; when the valve core 2 is at the third angle position, the blowback air inlet 220 is staggered with the first blowback air inlet 123 and communicated with the second blowback air inlet 124, and the blowback air outlet 221 is staggered with the first vent 120 and communicated with the second vent 121.

The dust collector is further provided with a first air chamber 60, a second air chamber 61, a third air chamber 62, a first partition wall 63, a second partition wall 64, a third partition wall 65 and an annular enclosing wall 66, wherein the first air chamber 60, the second air chamber 61 and the third air chamber 62 are formed by separating the space between the tray 7 and the lower shell 4, the first ventilation opening 120 faces the first air chamber 60, the second ventilation opening 121 faces the second air chamber 61, the first air outlet 122 faces the third air chamber 62, the fan 91 performs suction, and when the valve core 2 is at the first angle position, the air flow filtered by the first filter 920 flows to the suction air opening 912 of the fan 91 and then at least flows through the first air chamber 60, the first ventilation opening 120, the first air outlet 122 and the third air chamber 62 in sequence, and the air flow filtered by the second filter 921 flows to the suction air opening 912 of the fan 91 and then at least flows through the second air chamber 61, the second ventilation opening 121, the third air outlet 122 and the third air chamber 62 in sequence in the process that the air flow filtered by the second filter 921 flows to the suction air chamber 912 of the fan 91, A first air outlet 122 and a third air chamber 62. A first separating wall 63, a second separating wall 64, a third separating wall 65 and an annular wall 66 are respectively positioned between the tray 7 and the lower shell 4, the first separating wall 63 is used for separating the first air chamber 60 and the third air chamber 62, the second separating wall 64 is used for separating the second air chamber 61 and the third air chamber 62, the third separating wall 65 is used for separating the first air chamber 60 and the second air chamber 61, the first separating wall 63 is mainly composed of a first upper baffle strip 630 at the lower side of the tray 7 and a first lower baffle strip 631 at the upper side of the lower shell 4, the second separating wall 64 is mainly composed of a second upper baffle strip 640 at the lower side of the tray 7 and a second lower baffle strip 641 at the upper side of the lower shell 4, the third separating wall 65 is mainly composed of a third upper baffle strip 650 at the lower side of the tray 7 and a third lower baffle strip 651 at the upper side of the lower shell 4, the first air chamber 60, the second air chamber 61 and the third air chamber 62 are formed by separating the space surrounded by the annular wall 66, and the annular wall 66 is in an oval shape, the annular enclosing wall 66 mainly comprises an upper enclosing wall 660 at the lower side of the tray 7 and a lower enclosing wall 661 at the upper side of the lower shell 4, the upper enclosing wall 660 and the lower enclosing wall 661 are respectively in an oval shape, the annular enclosing wall 66 surrounds the periphery of the housing 1, one end of the first isolation wall 63 extends to the housing 1, and the other opposite end of the first isolation wall 63 extends to the annular enclosing wall 66; one end of second partition wall 64 extends to housing 1, and the opposite end of second partition wall 64 extends to annular enclosure 66; one end of the third partition wall 65 extends to the housing 1, and the opposite end of the third partition wall 65 extends to the annular enclosing wall 66. The first ventilation opening 120 is located between one end of the first partition wall 63 extending to the enclosure 1 and one end of the third partition wall 65 extending to the enclosure 1, the second ventilation opening 121 is located between one end of the second partition wall 64 extending to the enclosure 1 and one end of the third partition wall 65 extending to the enclosure 1, and the first ventilation opening 122 is located between one end of the first partition wall 63 extending to the enclosure 1 and one end of the second partition wall 64 extending to the enclosure 1.

The lower shell 4 is also provided with a first ventilation port 43 and a second ventilation port 44, wherein the first ventilation port 43 is butted with the first filter 920, and the second ventilation port 44 is butted with the second filter 921; when the valve core 2 is at the first angle position, the air flow filtered by the first filter 920 sequentially flows through at least the first ventilation port 43, the first air chamber 60, the first ventilation opening 120, the first air outlet 122 and the third air chamber 62 in the process of flowing to the suction air opening 912 of the fan 91, and the air flow filtered by the second filter 921 sequentially flows through at least the second ventilation port 44, the second air chamber 61, the second ventilation opening 121, the first air outlet 122 and the third air chamber 62 in the process of flowing to the suction air opening 912 of the fan 91; when the fan 91 performs suction and the valve core 2 is at the second angle position, the airflow filtered by the second filter 921 sequentially flows through at least the second ventilation port 44, the second air chamber 61, the second ventilation port 121, the first air outlet 122, and the third air chamber 62 in the process of flowing to the suction air port 912 of the fan 91, and sequentially flows through at least the first blowback air inlet 123, the blowback air inlet 220, the channel 22, the blowback air outlet 221, the first ventilation port 120, the first air chamber 60, the first ventilation port 43, and the first filter 920 in the process of flowing back the air into the dust collecting container 90; when the fan 91 performs suction and the valve core 2 is at the third angular position, the airflow filtered by the first filter 920 sequentially flows through at least the first ventilation port 43, the first air chamber 60, the first ventilation opening 120, the first air outlet 122, and the third air chamber 62 in the process that the airflow flows to the suction air opening 912 of the fan 91, and sequentially flows through at least the second blowback air inlet 124, the blowback air inlet 220, the channel 22, the blowback air outlet 221, the second ventilation opening 121, the second air chamber 61, the second ventilation port 44, and the second filter 921 in the process that the air flows back into the dust collecting container 90. The first ventilation port 43 is located at the lower side of the first air chamber 60 for communicating the first air chamber 60 with the first filter 920, and the second ventilation port 44 is located at the lower side of the second air chamber 61 for communicating the second air chamber 61 with the second filter 921. The tray 7 is further provided with a second air outlet 71 corresponding to the fan 91, the suction air opening 912 of the fan 91 is close to the second air outlet 71, the suction air opening 912 of the fan 91 is downward opposite to the second air outlet 71, and the second air outlet 71 forms a communication opening of the third air chamber 62 communicated with the suction air opening 912 of the fan 91.

The dust collector also comprises a fourth air chamber 67 and a fifth air chamber 68, the fourth air chamber 67 is formed between the upper shell 5 and the tray 7, the cover 1 and the fan 91 are respectively at least partially accommodated in the fourth air chamber 67, the first back-blowing air inlet 123 and the second back-blowing air inlet 124 are respectively exposed in the fourth air chamber 67, the air sucked by the fan 91 through the suction air port 912 is discharged into the fourth air chamber 67, and the fourth air chamber 67 forms an exhaust cavity for receiving the exhaust air of the fan 91; in the present embodiment, the air that flows back into the dust collection container 90 is air that is discharged from the fan 91 to the fourth air chamber 67, but not limited to this, the air that flows back may also be air that flows from outside the cleaner. When the valve core 2 is at the second angle position, at least part of the air discharged into the fourth air chamber 67 by the fan 91 sequentially flows through at least the first blowback air inlet 123, the blowback air inlet 220, the channel 22, the blowback air outlet 221, the first vent 120, the first air chamber 60 and the first filter 920 in the process of flowing back into the dust collecting container 90, and more specifically, when the valve core 2 is at the second angle position, at least part of the air discharged into the fourth air chamber 67 by the fan 91 sequentially flows through at least the first blowback air inlet 123, the blowback air inlet 220, the channel 22, the blowback air outlet 221, the first vent 120, the first air chamber 60, the first vent port 43 and the first filter 920 in the process of flowing back into the dust collecting container 90; when the valve core 2 is at the third angular position, at least a part of the air discharged into the fourth air chamber 67 by the fan 91 sequentially flows through at least the second blowback air inlet 124, the blowback air inlet 220, the channel 22, the blowback air outlet 221, the second air vent 121, the second air chamber 61, and the second filter 921 during the process of flowing back into the dust collecting container 90, and more specifically, when the valve core 2 is at the third angular position, at least a part of the air discharged into the fourth air chamber 67 by the fan 91 sequentially flows through at least the second blowback air inlet 124, the blowback air inlet 220, the channel 22, the blowback air outlet 221, the second air vent 121, the second air chamber 61, the second ventilation port 44, and the second filter 921 during the process of flowing back into the dust collecting container 90. In this embodiment, a part of the air discharged into the fourth air chamber 67 by the blower 91 flows back through the channel 22 and the like to be used for back flushing and cleaning the filter, and another part of the air discharged into the fourth air chamber 67 by the blower 91 is discharged out of the dust collector through the air outlet 96; the fifth air chamber 68 is formed between the upper case 5 and the outer case 95, the space between the first ceiling wall 20 and the second ceiling wall 10 communicates with the fifth air chamber 68 through the gap between the upper end outer periphery of the middle shaft portion 21 and the inner periphery of the second opening 100, and the fifth air chamber 68 is substantially in a normal pressure state. A handle (not shown) for moving the cleaner is attached to the outer case 95.

When the dust collector is normally used for sucking garbage and is closed, the valve core 2 stays at a first angle position; when the filter is to be cleaned, the fan 91 is still normally operated, the driving motor 3 drives the valve element 2 to the second angular position (the valve element 2 stays at the second angular position for a predetermined time, for example, 1.8 seconds), and the formed reverse airflow continuously back blows the first filter 920 to remove the blockage of the first filter 920; the driving motor 3 drives the valve core 2 to the third angular position (the valve core 2 stays at the third angular position for a predetermined time, for example, 1.8 seconds), and the formed reverse airflow continuously blows back the second filter 921 to clear the blockage of the second filter 921; the above process is repeated to repeatedly and alternately clear the clogging of the first filter 920 and the clogging of the second filter 921.

While the present invention has been described with reference to the particular illustrative embodiments, it will be understood by those skilled in the art that the present invention is not limited thereto, and may be embodied in many different forms without departing from the spirit and scope of the present invention as set forth in the following claims. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.

Claims

1. A kind of dust collector, characterized by: the dust collecting device comprises a dust collecting container, a fan, a first filter, a valve device and a driving motor, wherein the valve device comprises a fixed housing and a valve core which can rotate relative to the housing under the driving of the driving motor, the valve core is at least partially accommodated in the housing, the driving motor is provided with a rotating shaft which can drive the valve core to rotate relative to the housing, when the fan sucks air and the valve core is positioned at a first angle position, the air filtered by the first filter flows through the valve device, and the valve core bears downward air pressure; the rotating shaft and the valve core are locked together, so that the rotating shaft can hang the valve core.

2. The vacuum cleaner of claim 1, wherein: the fan sucks air, and when the valve core is positioned at the first angle position, the air filtered by the second filter flows through the valve device; when the fan sucks and the valve core is at the second angle position, the air filtered by the second filter flows through the valve device and the valve core bears downward air pressure; when the fan draws and the valve element is in the third angular position, air filtered by the first filter flows through the valve means and the valve element is subjected to a downward air pressure.

3. The vacuum cleaner of claim 2, wherein: the air-cooled fan is characterized by further comprising a second filter, the valve core is provided with a first top wall, when the fan sucks air and the valve core is located at a first angle position, the air filtered by the first filter flows between the first top wall and the lower end of the valve core in the process of flowing to a suction air inlet of the fan, and the air filtered by the second filter flows between the first top wall and the lower end of the valve core in the process of flowing to the suction air inlet of the fan, and at the moment, the first top wall bears downward air pressure; when the fan sucks and the valve core is positioned at the second angle position, the air filtered by the second filter flows between the first top wall and the lower end of the valve core in the process of flowing to a sucking air port of the fan, and the first top wall bears downward air pressure; when the fan sucks and the valve core is located at the third angle position, air filtered by the first filter flows through the space between the first top wall and the lower end of the valve core in the process of flowing to a sucking air port of the fan, and at the moment, the first top wall bears downward air pressure.

4. The vacuum cleaner of claim 1, wherein: the air-suction valve is characterized in that the valve core is located below the driving motor, the valve core is provided with a first top wall, the first top wall is located at the top of the valve core, when the fan sucks air and the valve core is located at a first angle position, the air filtered by the first filter flows through the space between the first top wall and the lower end of the valve core in the process of flowing to a suction air port of the fan, and the first top wall bears downward air pressure.

5. The vacuum cleaner of claim 4, wherein: the housing is provided with a first ventilation opening, the valve core is provided with a channel, and when the valve core is positioned at a first angle position, the first ventilation opening is communicated between the first filter and a suction air opening of the fan; when the valve core is at the second angle position, the first ventilation opening is communicated between the first filter and the channel; the vacuum cleaner further comprises a gasket, which is fixed relative to the housing, the lower end of the channel being closed by the gasket, and the upper end of the channel being closed by the first top wall.

6. The vacuum cleaner of claim 1, wherein: the lower end of the valve core is in sliding friction with the upper surface of the sealing gasket when the valve core rotates relative to the housing under the driving of the driving motor.

7. The vacuum cleaner of claim 6, wherein: still include the casing down, first filter detachable installs casing down to, valve unit is located the upside of casing down, the housing is fixed for casing down, the lower extreme of housing is leaned on in casing down, sealed the upper surface of pasting at casing down and constitute partly of casing down, the lower extreme of housing encircles sealed the pad.

8. The vacuum cleaner of claim 7, wherein: the lower shell is further provided with an annular convex rib, the sealing gasket is located in the area surrounded by the annular convex rib, and the annular convex rib is located between the periphery of the sealing gasket and the inner periphery of the lower end of the housing.

9. The vacuum cleaner of claim 1, wherein: the lower shell is provided with a sealing gasket, the lower end of the valve core is downwards abutted against the sealing gasket, the lower end of the valve core is sealed by the sealing gasket, and the driving motor is fixed on the upper side of the shell.

10. The vacuum cleaner of claim 1, wherein: the valve core is further provided with a middle shaft part, the middle shaft part and the rotating shaft are coaxially arranged, the rotating shaft and the middle shaft part are locked together, and the rotating shaft drives the valve core to rotate through the middle shaft part.

11. The vacuum cleaner of claim 10, wherein: the upper end of the middle shaft part is embedded and sleeved with the lower end of the rotating shaft.

12. The vacuum cleaner of claim 10, wherein: the valve device further comprises a first screw used for locking the rotating shaft and the middle shaft part together, a threaded hole locked by the first screw in a threaded mode is further formed in the lower end of the rotating shaft, a plurality of first teeth are arranged on the periphery of the lower end of the rotating shaft, a plurality of second teeth are arranged on the upper end of the middle shaft part, the lower end of the rotating shaft is embedded into the upper end of the middle shaft part, and the first teeth are meshed with the second teeth.

13. The vacuum cleaner of claim 12, wherein: the middle shaft part is further integrally provided with a pressing part located inside the middle shaft part, the lower end of the second tooth is integrally connected with the pressing part, the first screw is provided with an end seat located at the end part of the first screw and a screw part integrally connected with the end seat, the middle shaft part is in a hollow tubular shape, the first screw is placed into the middle shaft part from the lower end of the middle shaft part, the pressing part is provided with a first opening for the screw part to pass through, the screw part passes through the pressing part and is in threaded connection with the lower end of the rotating shaft, and the end seat is upwards abutted against the pressing part.

14. The vacuum cleaner of claim 10, wherein: still include the lower casing, well axial region is the state of putting vertically at the upside of lower casing, the lower casing is equipped with the protruding portion, the lower extreme of axial region in the protruding portion embedding, the upper end of axial region in the lower extreme embedding of pivot.

15. The vacuum cleaner of claim 10, wherein: the valve core is further provided with a first top wall, the middle shaft part is perpendicular to the first top wall, the upper end of the middle shaft part is integrally connected with the first top wall, the housing is provided with a second top wall, the second top wall faces the first top wall downwards, the second top wall is provided with a second opening, the upper end of the middle shaft part is embedded into the second opening, the lower end of the rotating shaft is embedded into the upper end of the middle shaft part, and the space between the first top wall and the second top wall is communicated with the space on the upper side of the second top wall through a gap between the outer periphery of the upper end of the middle shaft part and the inner periphery of the second opening.

16. The vacuum cleaner of claim 1, wherein: the valve core is further provided with a first top wall, the cover shell covers the outer side of the valve core, the cover shell is provided with a second cylinder portion and a second top wall, the upper end of the second cylinder portion is integrally connected with the second top wall, the second cylinder portion surrounds the valve core, the second top wall faces the first top wall downwards, and the driving motor is fixedly locked on the cover shell.

17. The vacuum cleaner of claim 16, wherein: the housing is further provided with a frame, the frame is located on the upper side of the second top wall and is integrally connected with the second top wall, the frame is located on the periphery of the driving motor, and the driving motor is locked on the frame.

18. The vacuum cleaner of claim 16, wherein: the driving motor is fixedly mounted on the upper side of the second top wall, the first top wall is close to the second top wall, the first top wall faces the second top wall upwards, the first top wall is provided with spaced convex ribs, the spaced convex ribs protrude upwards from the upper surface of the first top wall, and the spaced convex ribs are circular rings surrounding the rotation axis of the valve core.

19. The vacuum cleaner of claim 1, wherein: the air purifier also comprises a second filter, and when the fan sucks air and the valve core is in the first angle position, the air filtered by the second filter also flows through the valve device; the housing is provided with a first ventilation opening and a second ventilation opening, the valve core is provided with a channel, and when the valve core is positioned at a first angle position, the first ventilation opening is communicated between the first filter and a suction air opening of the fan, and the second ventilation opening is communicated between the second filter and the suction air opening of the fan; when the valve core is positioned at a second angle position, the first ventilation opening is communicated between the first filter and the channel, and the second ventilation opening is communicated between the second filter and a suction air opening of the fan; when the valve core is located at the third angle position, the first ventilation opening is communicated between the first filter and the suction air opening of the fan, and the second ventilation opening is communicated between the second filter and the channel.

20. The vacuum cleaner of claim 19, wherein: the housing is provided with a first air outlet, when the fan sucks air and the valve core is positioned at a first angle position, the air flow filtered by the first filter flows to the suction air inlet of the fan and then sequentially flows through at least a first ventilation opening and a first air outlet, and the air flow filtered by the second filter flows to the suction air inlet of the fan and then sequentially flows through at least a second ventilation opening and a first air outlet; when the fan sucks and the valve core is positioned at a second angle position, the airflow filtered by the second filter flows through at least the second ventilation opening and the first air outlet in sequence in the process of flowing to the suction air opening of the fan, and the air flows through at least the channel, the first ventilation opening and the first filter in sequence in the process of reversely flowing into the dust collection container; when the fan sucks and the valve core is located at the third angle position, the airflow filtered by the first filter flows through at least the first ventilation opening and the first air outlet in sequence in the process of flowing to the suction air opening of the fan, and the air flows through at least the channel, the second ventilation opening and the second filter in sequence in the process of reversely flowing into the dust collection container.

21. The vacuum cleaner of claim 20, wherein: the housing is also provided with a second cylinder part, the second cylinder part surrounds the valve core, and the first ventilation opening, the second ventilation opening and the first air outlet are respectively arranged on the second cylinder part.

22. The vacuum cleaner of claim 21, wherein: the valve core is further provided with a middle shaft part, a first top wall, a first cylinder part, a first blocking wall and a second blocking wall, the first blocking wall and the second blocking wall respectively extend to the first cylinder part from the middle shaft part, the channel is formed between the first blocking wall and the second blocking wall, the first cylinder part surrounds the middle shaft part, the dust collector further comprises a sealing gasket, the lower end of the middle shaft part, the lower end of the first blocking wall and the lower end of the second blocking wall are respectively connected downwards to the sealing gasket, and the upper end of the first blocking wall and the upper end of the second blocking wall are respectively and integrally connected with the first top wall.

23. The vacuum cleaner of claim 21, wherein: the second cylinder part is also provided with a first back-blowing air inlet and a second back-blowing air inlet, the first ventilation opening, the second ventilation opening and the first air outlet are positioned between the tray and the lower shell, the first back-blowing air inlet and the second back-blowing air inlet are positioned between the tray and the upper shell, and when the valve core is positioned at a second angle position, the first ventilation opening is communicated with the first back-blowing air inlet through the channel; when the valve core is positioned at the third angle position, the second ventilation opening is communicated with the second back-blowing air inlet through the channel.

24. The vacuum cleaner of claim 23, wherein: the cover is fixedly locked on the tray, the tray is provided with a first mounting opening, the upper shell is provided with a second mounting opening, the second cylinder part is cylindrical and penetrates through the first mounting opening, the lower end of the second cylinder part is abutted against the lower shell, the cover is also provided with a second top wall, and the second top wall plugs the second mounting opening; the first air vent, the second air vent and the first air outlet are arranged side by side in the circumferential direction of the second cylinder part.

25. The vacuum cleaner of claim 21, wherein: the channel is provided with a back-blowing air inlet and a back-blowing air outlet, the back-blowing air inlet forms an air inlet of the channel, the back-blowing air outlet forms an air outlet of the channel, and the second barrel part is also provided with a first back-blowing air inlet and a second back-blowing air inlet; when the valve core is positioned at the first angle position, the valve core seals the first back-blowing air inlet and the second back-blowing air inlet; when the valve core is positioned at a second angle position, the first back-blowing air inlet is communicated with the back-blowing air inlet, and the valve core seals the second back-blowing air inlet; when the valve core is located at the third angle position, the second back-blowing air inlet is communicated with the back-blowing air inlet, and the valve core seals the first back-blowing air inlet.

26. The vacuum cleaner of claim 25, wherein: when the valve core is positioned at a second angle position, the first back-blowing air inlet is aligned with the back-blowing air inlet in the radial direction of the second cylinder part and communicated with the back-blowing air inlet, and the first vent is aligned with the back-blowing air outlet in the radial direction of the second cylinder part and communicated with the back-blowing air outlet; when the valve core is positioned at the third angle position, the second back-blowing air inlet is aligned with the back-blowing air inlet in the radial direction of the second cylinder part and communicated with the back-blowing air inlet, and the second air outlet is aligned with the back-blowing air outlet in the radial direction of the second cylinder part and communicated with the back-blowing air outlet.

27. The vacuum cleaner of claim 25, wherein: the valve core is also provided with a first cylinder part, the second cylinder part is sleeved outside the first cylinder part, the back-blowing air inlet and the back-blowing air outlet are arranged on the first cylinder part, and when the valve core is positioned at a first angle position, the first cylinder part seals the first back-blowing air inlet and the second back-blowing air inlet; when the valve core is positioned at a second angle position, the first cylinder part seals the second back-blowing air inlet; when the valve core is located at the third angle position, the first barrel part seals the first back-blowing air inlet.

28. The vacuum cleaner of claim 25, wherein: the valve core is further provided with a first cylinder part and a first top wall, the upper end of the first cylinder part is integrally connected with the first top wall, the lower end of the first cylinder part is downwards connected with the sealing gasket, and the lower end of the first cylinder part is in a circular ring shape surrounding the rotation axis of the valve core.

29. The vacuum cleaner of claim 25, wherein: when the fan sucks and the valve core is positioned at a second angle position, the airflow filtered by the second filter flows through at least a second ventilation opening and a first air outlet in sequence in the process of flowing to the suction air opening of the fan, and the air flows through at least a first back-blowing air inlet, a channel, a back-blowing air outlet, a first ventilation opening and a first filter in sequence in the process of flowing back to the dust collecting container; when the fan sucks and the valve core is positioned at a third angle position, the airflow filtered by the first filter flows through at least a first vent and a first air outlet in sequence in the process of flowing to a suction air inlet of the fan, and the air flows through at least a second back-blowing air inlet, a channel, a back-blowing air outlet, a second vent and a second filter in sequence in the process of flowing back to the dust collecting container; the areas of the first back-blowing air inlet, the back-blowing air inlet and the back-blowing air outlet are not smaller than that of the first vent, and the areas of the second back-blowing air inlet, the back-blowing air inlet and the back-blowing air outlet are not smaller than that of the second vent.

30. The vacuum cleaner of claim 25, wherein: when the valve core is positioned at a first angle position, the back-blowing air inlet is staggered with the first back-blowing air inlet and the second back-blowing air inlet, and the back-blowing air outlet is staggered with the first ventilation opening and the second ventilation opening; when the valve core is positioned at a second angle position, the back-blowing air inlet is communicated with the first back-blowing air inlet and staggered with the second back-blowing air inlet, and the back-blowing air outlet is communicated with the first ventilation opening and staggered with the second ventilation opening; when the valve core is located at the third angle position, the back-blowing air inlet is staggered with the first back-blowing air inlet and communicated with the second back-blowing air inlet, and the back-blowing air outlet is staggered with the first vent and communicated with the second vent.

31. The vacuum cleaner of claim 25, wherein: the first ventilation opening, the second ventilation opening and the first air outlet are respectively positioned between the tray and the lower shell, and the first back-blowing air inlet and the second back-blowing air inlet are respectively positioned between the tray and the upper shell; the dust collector is further provided with a first air chamber, a second air chamber and a third air chamber, the first air chamber, the second air chamber and the third air chamber are formed by space separation between the tray and the lower shell, the first vent faces the first air chamber, the second vent faces the second air chamber, the first air outlet faces the third air chamber, the fan sucks air, and when the valve core is located at the first angle position, the air flow filtered by the first filter flows to the suction air port of the fan and sequentially flows through at least the first air chamber, the first vent, the first air outlet and the third air chamber, and the air flow filtered by the second filter flows to the suction air port of the fan and sequentially flows through at least the second air chamber, the second vent, the first air outlet and the third air chamber.

32. The vacuum cleaner of claim 31, wherein: the dust collector also comprises a first partition wall, a second partition wall, a third partition wall and an annular enclosing wall, wherein the first partition wall, the second partition wall, the third partition wall and the annular enclosing wall are positioned between the tray and the lower shell, the first partition wall is used for separating the first air chamber and the third air chamber, the second partition wall is used for separating the second air chamber and the third air chamber, the third partition wall is used for separating the first air chamber and the second air chamber, the first air chamber, the second air chamber and the third air chamber are formed by separating a space surrounded by the annular enclosing wall, the annular enclosing wall surrounds the periphery of the housing, one end of the first partition wall extends to the housing, and the other end, opposite to the first partition wall, extends to the annular enclosing wall; one end of the second isolation wall extends to the housing, and the other end of the second isolation wall, which is opposite to the housing, extends to the annular enclosing wall; one end of the third partition wall extends to the housing and the opposite end of the third partition wall extends to the annular enclosure.

33. The vacuum cleaner of claim 32, wherein: the first air outlet is positioned between one end of the first separation wall, which extends to the housing, and one end of the third separation wall, which extends to the housing, the second air outlet is positioned between one end of the second separation wall, which extends to the housing, and one end of the third separation wall, which extends to the housing, and the first air outlet is positioned between one end of the first separation wall, which extends to the housing, and one end of the second separation wall, which extends to the housing.

34. The vacuum cleaner of claim 31, wherein: the lower shell is also provided with a first ventilation port and a second ventilation port, the first ventilation port is in butt joint with the first filter, and the second ventilation port is in butt joint with the second filter; when the valve core is positioned at the first angle position, the airflow filtered by the first filter at least sequentially flows through the first ventilation port, the first air chamber, the first ventilation opening, the first air outlet and the third air chamber in the process of flowing to the suction air opening of the fan, and the airflow filtered by the second filter at least sequentially flows through the second ventilation port, the second air chamber, the second ventilation opening, the first air outlet and the third air chamber in the process of flowing to the suction air opening of the fan; when the fan sucks and the valve core is positioned at a second angle position, the air flow filtered by the second filter flows through at least a second ventilation port, a second air chamber, a second ventilation port, a first air outlet and a third air chamber in sequence in the process of flowing to a suction air port of the fan, and the air flows through at least a first back-blowing air inlet, a channel, a back-blowing air outlet, a first ventilation port, a first air chamber, a first ventilation port and a first filter in sequence in the process of flowing back into the dust collecting container; when the fan sucks and the valve core is located at the third angle position, the air flow filtered by the first filter flows to the suction air port of the fan, and sequentially flows through at least the first ventilation port, the first air chamber, the first ventilation port, the first air outlet and the third air chamber, and sequentially flows through at least the second back-blowing air inlet, the channel, the back-blowing air outlet, the second ventilation port, the second air chamber, the second ventilation port and the second filter in the process that the air reversely flows into the dust collecting container.

35. The vacuum cleaner of claim 31, wherein: the first back blowing air inlet and the second back blowing air inlet are respectively exposed in the fourth air chamber, and air sucked by the fan through the suction air inlet is discharged into the fourth air chamber; when the valve core is positioned at the second angle position, at least part of air discharged into the fourth air chamber by the fan flows through at least a first back-blowing air inlet, a channel, a back-blowing air outlet, a first ventilation opening, a first air chamber and a first filter in sequence in the process of flowing back into the dust collecting container; when the valve core is positioned at the third angle position, at least part of air discharged into the fourth air chamber by the fan flows through at least a second back-blowing air inlet, a channel, a back-blowing air outlet, a second ventilation opening, a second air chamber and a second filter in sequence in the process of flowing back into the dust collecting container.