CN217852706U - Dust-gas separation air duct structure and double-cavity dust-gas separation device - Google Patents

Abstract

The utility model relates to a dirt gas separation wind channel structure and double-chamber formula dirt gas separation device. The dust-air separation air channel structure comprises a spiral air channel, an air channel inlet and an air channel outlet, wherein the air channel inlet and the air channel outlet are arranged on the spiral air channel; the periphery of the spiral air duct close to the air duct outlet is provided with a separation opening for separating dust and air, and the cross section of at least one section of the spiral air duct is gradually reduced from the air duct inlet to the air duct outlet. The utility model discloses utilize the inverse relation of fluid flow speed and sectional area, carry out the structure through the sectional area to at least one section spiral duct and prescribe a limit to, increase gas flow speed under the prerequisite that does not increase wind channel suction, and then the centrifugal force that dust particles received when rotatory flow of effective increase dusty air current realizes the maximize of dirt gas separation efficiency in limited space, helps improving clean filter effect.

Description

Dust-gas separation air duct structure and double-cavity dust-gas separation device

Technical Field

The utility model relates to a clean electrical apparatus technical field especially relates to a dirt gas separation wind channel structure and double-chamber formula dirt gas separation device.

Background

In the existing cleaning electric appliances such as dust collectors and mite removing instruments, the working principle is that a motor is utilized to drive a blade to rotate at a high speed, negative pressure is generated in a sealed shell, and therefore dust and other garbage are sucked into the shell; the filter units with different structures are usually arranged inside the casing to separate dust and gas from the sucked dust-containing gas, and most of the filter units adopt a design of filtering by using a filter element alone or combining the filter element with a spiral air duct.

Most of the existing filter elements are porous filter materials such as air filter cotton and the like, and the existing filter elements can utilize the effects of inertial collision, interception, electrostatic adsorption and the like to enable dust particles mixed in gas to sink and move into the filter materials, so that the dust particles can be effectively intercepted, and meanwhile, excessive resistance can not be formed on airflow; however, along with the increase of filter element live time, the problem of jam appears more and more easily in its self-trapped dust, increases its resistance to the formation of air current, and its filter effect also can reduce simultaneously, and the exclusive use filter element filters dirty air current, can cause filter element's operating pressure great, and then has improved the frequency that filter element unpicked and washed or changed, influences the use experience, has perhaps shortened consumptive material life, has increased use cost.

The spiral air duct realizes dust-air separation by utilizing the movement of dust generated by the centrifugal force generated by the rotation flow and the self gravity when dust-containing gas flows in the spiral air duct, is generally used for separating large-particle dust, and the gas after primary dust-air separation is further subjected to secondary and tertiary separation by a filtering element. Although the design of the filter element combined with the spiral air duct can reduce the working pressure of the filter element, along with the wide application of cleaning appliances such as dust collectors and mite removing instruments in daily life in recent years, the requirements of users on the size and the portability of the whole machine are gradually improved, the design of the filter element combined with the spiral air duct occupies more space, the layout design of other structural components is influenced, and even the size of the whole machine is increased; in order to take account of the size and the portability of the whole machine, a plurality of products have the design that the space parts of the filter element and the spiral air channel are overlapped, so that the air flowing speed in the spiral air channel is low or the air flowing path is short, and further dust cannot be effectively separated, and the dust-air separation effect is influenced.

SUMMERY OF THE UTILITY MODEL

Based on this, the embodiment of the utility model provides a dust and gas separation wind channel structure is provided, its advantage that has simple structure and can effectively improve dust and gas separation effect.

The embodiment of the utility model provides a reach above-mentioned purpose through following technical scheme:

a dust-gas separation air duct structure comprises a spiral air duct, an air duct inlet and an air duct outlet, wherein the air duct inlet and the air duct outlet are arranged on the spiral air duct, a separation opening for dust-gas separation is formed in the periphery of the spiral air duct close to the air duct outlet, and the cross section of at least one section of the spiral air duct is gradually reduced from the air duct inlet to the air duct outlet.

The embodiment of the utility model provides an among the dirt gas separation wind channel structure, the sectional area of at least one section spiral wind channel reduces along the direction of wind channel entry to wind channel export gradually, because the flow velocity that the fluid flows in the passageway is the inverse ratio with the sectional area, therefore under the same negative pressure suction, along gas flow direction, the design of the utility model can improve gaseous flow velocity in the spiral wind channel, dirty gas is following when spiral wind channel carries out the spiral flow, the centrifugal force that its dust granule that mix with received also increases along with its increase of velocity of motion, and the dust granule does the motion of keeping away from spiral center pin direction under the effect of centrifugal force, and final great dust granule flows through separation mouth department leaves spiral wind channel, and gaseous then warp the wind channel export flows to reach the purpose of dirt gas separation. The embodiment of the utility model provides a make full use of wind channel interior sectional area and gas flow velocity's relation, through carrying out preferred the injecing to spiral wind channel, increase gas flow velocity under the prerequisite that does not increase wind channel suction, and then play the effect of increase dust particle centrifugal force, improve dirt gas separation effect in limited space the biggest, use to the dust catcher, can effectively improve clean filter effect when removing cleaning equipment such as mite appearance, simultaneously not too much occupation space, do not influence the layout design of other structural component, help realizing the miniaturization of complete machine size, it is portable.

Further, the spiral duct is defined by duct walls; the air duct wall comprises a shaft body, an air duct inner wall and an air duct outer wall; the inner wall of the air duct is a spiral curved surface and is convexly arranged on the surface of the shaft body; the shaft body is located to wind channel outer wall cover the axis body with outside the wind channel inner wall, the inside surface of wind channel outer wall with the edge butt of wind channel inner wall, just the isolating port is seted up in the global of wind channel outer wall.

The spiral air duct is limited by the shaft body, the air duct inner wall and the air duct outer wall, so that the shape of the shaft body and the air duct outer wall can be limited, the cross section area of the spiral air duct can be limited, the structure is simple, and the split structure is beneficial to reducing the production and processing difficulty and cost.

Furthermore, the central axis of the shaft body is superposed with the spiral central axis of the spiral air duct, and the inner wall of the air duct is an Archimedes spiral surface coaxially arranged with the shaft body.

In addition, the embodiment of the utility model also provides a double-chamber dust-gas separation device, which is internally provided with a filter chamber and a dust storage chamber;

the filter cavity comprises a first filter area, a second filter area and the dust-gas separation air channel structure; the separation port of the spiral air duct is communicated with the dust storage cavity, the air duct outlet of the spiral air duct is communicated with the first filtering area, and the first filtering area is communicated with the second filtering area; a first filtering piece is arranged in the first filtering area, and a second filtering piece is arranged in the second filtering area.

The embodiment of the utility model provides a double-chamber formula dirt gas separator, it forms filter chamber and dust storage chamber respectively in the device, through form spiral wind channel, first filtering area and the second filtering area that communicate in proper order in the filter chamber, when it is applied to clean electrical apparatus such as dust catcher, remove mite appearance, under the effect of the negative pressure suction that its equipment inside formed, through the dusty air current that inhales carry out the spiral flow along spiral wind channel, the dust that mingles in the air current in the flow process moves along the direction of keeping away from the spiral center pin because of receiving the effect of centrifugal force, further combine the restriction of the sectional area change of spiral wind channel, the sectional area is great at wind channel entrance, along the direction of keeping away from the wind channel entry, along with the gradual reduction of wind channel sectional area, the centrifugal force that the dust that mingles with in the air current produced because of rotatory flow increases gradually, make keep away from the spiral center pin in this wind channel more, the dusty density in the gas that is close to the spiral wind channel outside is higher, when it flows to the separation of separation mouth, the dust of large granule is thrown away from the spiral under the effort of centrifugal force, and further collect and store in the dust storage chamber, reach preliminary separation; under the effect of surplus suction, the air current gets into first filtering area from the wind channel export to further filter through first filtering piece and second filtering piece in proper order in first filtering area and second filtering area, the tiny particle dust that mingles can be held back, and clean gas is discharged through the cup gas outlet at last.

The double-cavity dust-gas separating device reasonably arranges the spiral air channel and the two filtering areas, has simple structure, and can effectively realize dust-gas separation of dust-containing air flow sucked by the cleaning equipment after multiple times of separation and filtration and avoid the hidden trouble of dust backflow by the reasonable design of the space; in addition, the structure of the spiral air duct is optimized, the centrifugal force of dust is effectively increased when the dust flows rotationally, the maximum separation efficiency is achieved in a limited space, the working pressure of the filtering element can be reduced, the technical problem that the suction is influenced due to the fact that the dust is blocked so that the cleaning effect of the whole equipment is influenced is avoided, the replacement frequency of the filtering element is reduced, the service life of consumable materials is prolonged, and the reduction of the use cost is facilitated.

Further, the double-cavity dust-gas separation device comprises a cover body, a dust cup and a partition piece;

the dust cup is detachably arranged on the cover body, the separating piece is limited between the cover body and the dust cup, the cover body and the separating piece are enclosed to form the second filtering area, the separating piece and the dust cup are enclosed to form the first filtering area, and the separating piece and the dust cup are enclosed to form the dust storage cavity;

the air duct inlet and the second filtering area are respectively communicated with the outside through a through hole formed in the dust cup, and the first filtering area and the second filtering area are communicated through a filtering inlet formed in the partition in a penetrating manner; the axis body is detachable to be fixed in the separator, the wind channel outer wall set up in the inboard surface of dirt cup.

The cover body, the dust cup and the separating piece are designed in a split mode and can be detachably mounted, so that dust can be poured out conveniently and the structure can be cleaned conveniently.

Furthermore, the dust cup comprises a first cup part and a second cup part which are fixedly connected and arranged side by side, and the outer wall of the air duct is arranged on the inner side surface of the first cup part; the second cup part and the separator enclose to form the dust storage cavity; the separation opening is formed at a connection portion between the first cup portion and the second cup portion.

The structure of the dust cup is limited, the first cup portion and the second cup portion which are arranged side by side are used for enclosing to form the filter cavity and the dust storage cavity respectively, a through hole is directly formed in the connecting position of the first cup portion and the second cup portion in a penetrating mode to form the separating port, dust can be directly thrown into the dust storage cavity under the action of centrifugal force, dust-air separation is effectively achieved, and the problem of dust backflow is avoided.

Furthermore, the double-cavity dust-gas separation device also comprises a clamping support; the clamping support is detachably arranged on the surface of one side, facing the dust cup, of the separating piece, and the first filter piece is limited and fixed on the clamping support; the second filtering piece is fixed between the separating piece and the cover body in a limiting mode. Utilize spacing mode to realize that first filtration piece and second filter the fixed of piece, when neither influencing the air flow, the dismouting is easy and simple to handle, and the follow-up consumptive material of being convenient for filters the change of piece.

Furthermore, a plurality of first bracket clamping pieces are convexly arranged at the edge of the clamping bracket; a plurality of second support clamping pieces are convexly arranged on the surface of one side, facing the dust cup, of the separating piece at intervals along the circumferential direction of the filtering inlet, are arranged at intervals around the filtering inlet, and extend in the direction close to the center of the filtering inlet; the first support clamping piece is correspondingly limited between the separating piece and the second support clamping piece. Utilize the cooperation of support joint spare and second support joint spare, can realize the installation and the dismantlement of joint spare through simple rotation operation, the good and dismouting easy and simple to handle of fixed stability.

Furthermore, the double-cavity dust-gas separation device also comprises a buckle assembly and a buckling assembly;

the buckle assembly comprises a first buckle structure and a second buckle structure movably clamped with the first buckle structure, wherein the first buckle structure is arranged at the edge of the dust cup, and the second buckle structure is correspondingly arranged on the surface of the cover body;

the buckling and pressing component comprises a clamping piece and a buckling and pressing piece, the clamping piece is convexly arranged on the surface of the dust cup, one end of the buckling and pressing piece can be rotatably arranged on the surface of the cover body around a shaft, and the other end of the buckling and pressing piece is movably clamped with the clamping piece.

The cover body and the dust cup are fixed by the movable clamping of the first clamping structure and the second clamping structure, the cover body and the dust cup are simultaneously matched with the movable clamping of the buckling piece and the clamping piece, the cover body can be fastened in a pressing mode from top to bottom, the fixing stability is good, the clamping of the cover body and the clamping piece can be removed by turning the buckling piece, the dismounting operation is simple and convenient, and the follow-up dismounting and washing are convenient.

Furthermore, elastic sealing elements are arranged between the cover body and the separating piece, between the separating piece and the dust cup and between the air duct outer wall and the air duct inner wall, so that the sealing performance of each area in the filtering cavity is ensured.

For a better understanding and an implementation, the present invention is described in detail below with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic structural view of a dust-air separation duct according to embodiment 1 of the present invention;

fig. 2 is a schematic view of a structural angle of the dual-chamber dust-gas separation device according to embodiment 2 of the present invention;

fig. 3 is a schematic view of a structural angle two of the double-chamber dust-gas separation device according to embodiment 2 of the present invention;

fig. 4 is an explosion schematic view of the structure of the dual-chamber dust-gas separation device according to embodiment 2 of the present invention;

fig. 5 is a schematic view of a partial cut-away structure of a dual-chamber dust-gas separation device according to embodiment 2 of the present invention;

fig. 6 is a schematic view of gas flow in the dual-chamber dust-gas separation device according to embodiment 2 of the present invention;

fig. 7 is a schematic structural view of a dust cup according to embodiment 2 of the present invention;

fig. 8 is a schematic structural view of a clamping bracket according to embodiment 2 of the present invention;

fig. 9 is a schematic structural view of the partition, the clamping bracket and the first filter member according to embodiment 2 of the present invention;

fig. 10 is a schematic view of the assembly of the partition, the clamping bracket and the first filter member according to embodiment 2 of the present invention;

fig. 11 is a schematic view of a first buckle structure and a second buckle structure according to embodiment 2 of the present invention;

fig. 12 is a schematic view of a structural state of the fastening assembly according to embodiment 2 of the present invention;

fig. 13 is a schematic view of a structural state of the fastening assembly according to embodiment 2 of the present invention.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Example 1

Please refer to fig. 1, fig. 1 is the structural schematic diagram of the dust-air separation air duct according to embodiment 1 of the present invention, as shown in the figure, embodiment 1 of the present invention provides a dust-air separation air duct structure, which includes a spiral air duct 2 and is disposed at an air duct inlet 11 and an air duct outlet 13 of the spiral air duct 2, a separation port 12 for dust-air separation is disposed at an outer peripheral side of the spiral air duct 2 close to the air duct outlet 13, and a cross section of the at least one section of spiral air duct 2 is gradually reduced from the air duct inlet 11 to the air duct outlet 13.

Embodiment 1 in the dust and gas separation wind channel structure, the sectional area of at least one section spiral wind channel 2 reduces along wind channel entry 11 to the direction of wind channel export gradually, because the flow velocity that the fluid flows in the passageway is inverse ratio with the sectional area, therefore under the same negative pressure suction, along the gas flow direction, the utility model discloses a design can improve the flow velocity of gas in spiral wind channel 2, and dusty gas is when carrying out spiral flow along spiral wind channel 2, as shown by solid arrow a in fig. 1, the centrifugal force that the dust granule that mix with in the gas received also increases along with its velocity of motion's increase, and the dust granule is done the motion of keeping away from spiral center pin direction under the effect of centrifugal force, and final dust granule flows through separation mouth 12 and leaves spiral wind channel 2, as shown by dotted arrow in fig. 1, and gas then flows out through wind channel export 13, as shown by solid arrow b in fig. 1 to reach the purpose of dust and gas separation. The embodiment of the utility model provides a make full use of wind channel interior sectional area and gas flow speed's relation, through carrying out preferred the injecing to spiral wind channel 2, increase gas flow speed under the prerequisite that does not increase wind channel suction, and then play the effect of increase dust particle centrifugal force, improve dirt gas separation effect in limited space the biggest, use to the dust catcher, can effectively improve clean filter effect when cleaning equipment such as mite removing appearance, simultaneously not too much occupation space, do not influence the overall arrangement design of other structural component, help realizing the miniaturization of complete machine size, it is portable.

Specifically, the spiral duct 2 is defined by a duct wall 1; the air duct wall 1 comprises a shaft body 14, an air duct inner wall 15 and an air duct outer wall 16;

the outer diameter of the shaft body 14 gradually increases in the direction away from the air duct inlet 11;

the inner wall 15 of the air duct is a spiral curved surface and is convexly arranged on the surface of the shaft body 14;

the air duct outer wall 16 is a hollow cylinder structure, and is sleeved outside the shaft body 14 and the air duct inner wall 15, the inner side surface of the air duct outer wall 16 is abutted against the edge of the air duct inner wall 15, and the separation opening 12 is opened on the circumferential surface of the air duct outer wall 16.

The spiral air duct 2 is defined by the shaft body 14, the air duct inner wall 15 and the air duct outer wall 16, and is defined by the shapes of the shaft body 14 and the air duct outer wall 16, for example, in this embodiment, the shaft body 14 is in a cone structure, the outer diameter of the shaft body gradually increases from the air duct inlet 11 to the air duct outlet 13, the air duct outer wall 16 is in a hollow cylindrical structure, and by utilizing the change of the outer diameter of the cone structure, the outer surface of the shaft body and the inner wall surface of the hollow cylindrical structure are matched with the spiral curved surface, so that the limitation of the sectional area of the spiral air duct 2 can be realized, the structure is simple, in addition, in other embodiments, the shaft body 14 can be in a structure with the same outer diameter, and the inner wall surface of the air duct outer wall 16 has a changed inner diameter, so that the change of the sectional area of the spiral air duct 2 can be realized, or other implementation manners can be realized, and the split-type structure of the air duct wall is favorable for reducing the difficulty and the cost of production and processing.

Further, the central axis of the shaft body 14 is overlapped with the spiral central axis of the spiral air duct 2, and the air duct inner wall 15 is an archimedes spiral surface coaxially arranged with the shaft body 14.

Example 2

Referring to fig. 2-5, fig. 2 is a schematic view of a structural angle of a dual-chamber dust-gas separation device according to embodiment 2 of the present invention, fig. 3 is a schematic view of a structural angle of a dual-chamber dust-gas separation device according to embodiment 2 of the present invention, fig. 4 is a schematic view of an explosion of a structure of a dual-chamber dust-gas separation device according to embodiment 2 of the present invention, fig. 5 is a schematic view of a partial cut of a structure of a dual-chamber dust-gas separation device according to embodiment 2 of the present invention, as shown in the figures, embodiment 2 of the present invention provides a dual-chamber dust-gas separation device, in which a filter chamber and a dust storage chamber 3 are formed;

the filter cavity comprises a first filter area 41, a second filter area 42 and the dust-gas separation air channel structure in embodiment 1; the separation port 12 of the spiral air duct 2 is communicated with the dust storage cavity 3, the air duct outlet 13 of the spiral air duct 2 is communicated with the first filtering area 41, and the first filtering area 41 is communicated with the second filtering area 42; a first filter member 43 is provided in the first filter region 41, and a second filter member 44 is provided in the second filter region 42.

The double-chamber dust-gas separating device of embodiment 2 of the present invention is provided with a filter chamber and a dust storage chamber 3, wherein the filter chamber is internally provided with a spiral duct 2, a first filtering area 41 and a second filtering area 42 which are sequentially connected, when the device is applied to cleaning appliances such as a dust collector and a mite removing instrument, the sucked dust-containing air flows spirally along the spiral duct 2 under the action of negative pressure suction force formed inside the device, as shown in fig. 5-6, fig. 6 is a schematic view of gas flow in the double-chamber dust-gas separating device of embodiment 2 of the present invention, the arrow in fig. 6 is a gas flow path, as shown in the figure, the dust mixed in the air flow moves along the direction far away from the spiral center axis due to the centrifugal force during the flow process, as shown by the solid arrow a in fig. 5, in combination with the limitation of the variation of the cross-sectional area of the spiral duct 2, the cross-sectional area at the duct inlet 11 is larger, and along the direction away from the duct inlet 11, the centrifugal force generated by the dust entrained in the airflow due to the rotational flow gradually increases along with the gradual reduction of the cross-sectional area of the duct, so that the dust-containing density in the air at the duct farther away from the spiral central axis, that is, the closer to the outer side of the spiral duct 2, is higher, when the dust flows to the separation port 12, the large-particle dust is thrown out of the spiral duct 2 under the action of the centrifugal force, and is further collected and stored in the dust storage chamber 3, as shown by the dotted arrow in fig. 4, so as to achieve the preliminary dust-air separation; under the action of residual suction force, the airflow enters the first filtering area 41 from the air duct outlet 13, and further passes through the filtering of the first filtering element 43 and the second filtering element 44 in the first filtering area 41 and the second filtering area 42 in sequence, and the entrained small-particle dust can be intercepted by the first filtering element 43 and the second filtering element 44 in sequence as shown by the solid arrow b in fig. 4, so that the secondary dust and the tertiary dust are separated, and finally, the clean air is discharged through the cup air outlet 62.

The double-cavity dust-gas separating device in embodiment 2 of the utility model reasonably arranges and designs the spiral air duct 2 and the two filtering areas through the double-cavity design of the filtering cavities and the dust storage cavity, has simple structure, and can effectively realize dust-gas separation after the dust-containing air flow sucked by the cleaning equipment is separated and filtered for a plurality of times through the reasonable design of the space, and can avoid the hidden trouble of dust backflow; in addition, the structure of the spiral air duct 2 is optimized, the centrifugal force of dust in the rotary flow is effectively increased, the maximum separation efficiency is realized in a limited space, the working pressure of the filtering piece can be reduced, the technical problem that the suction is influenced due to the blockage of the dust so as to influence the cleaning effect of the whole equipment is avoided, the replacement frequency of the filtering piece is reduced, the service life of consumable materials is prolonged, and the reduction of the use cost is facilitated.

Specifically, the double-cavity dust-gas separating device comprises a cover body 5, a dust cup 6 and a partition 7;

the dust cup 6 is detachably arranged on the cover body 5, the separating element 7 is limited between the cover body 5 and the dust cup 6, the cover body 5 and the separating element 7 enclose to form a second filtering area 42, the separating element 7 and the dust cup 6 enclose to form the first filtering area 41, and the separating element 7 and the dust cup 6 enclose to form the dust storage cavity 3;

the dust cup 6 is provided with a plurality of through holes communicated with the outside, and specifically comprises a cup body air inlet 61 and a cup body air outlet 62, the air duct inlet 11 is communicated with the cup body air inlet 61, the separating piece 7 is provided with a filtering inlet 71 in a penetrating way, the first filtering area 41 is communicated with the second filtering area 42 through the filtering inlet 71, the second filtering area 42 is communicated with the cup body air outlet 62, and the through holes can be directly communicated or communicated through a structural formed air flow channel on the separating piece 3; the shaft 14 is detachably fixed to the partition 7, and the outer wall 16 of the air duct is disposed on the inner surface of the dust cup 6.

The cover body 5, the dust cup 6 and the separating piece 7 are designed in a split mode and can be mounted detachably, so that dust can be poured out conveniently and the structure can be cleaned conveniently.

As an alternative embodiment, please refer to fig. 7, fig. 7 is a schematic structural diagram of a dust cup according to embodiment 2 of the present invention, in this embodiment, the dust cup 6 includes a first cup portion 63 and a second cup portion 64 fixedly connected and arranged side by side, the first cup portion 63 is a hollow cylindrical structure with an open end, the opening of the first cup portion is arranged toward the cover 5, and the air duct outer wall 16 is arranged on the inner side surface of the first cup portion 63; the second cup portion 64 has an opening which encloses with the partition member 7 to form the dust storage chamber 3; the cup air inlet 61 and the air duct inlet 11 are through holes formed through the bottom of the first cup 63, and the separation port 12 is a through hole formed through the connection between the first cup 63 and the second cup 64.

The structure of the dust cup 6 is limited, the first cup part 63 and the second cup part 64 which are arranged side by side are respectively used for enclosing to form the filtering area and the dust storage cavity 3, a through hole is directly formed at the joint of the first cup part 63 and the second cup part 64 in a penetrating way to form the separation port 12, dust can be directly thrown into the dust storage cavity 3 under the action of centrifugal force, dust-air separation is effectively realized, and the problem of dust backflow is avoided. The separation port 12 can be further provided with a movable baffle (not shown), the movable baffle is movably covered on the separation port 12, the movable baffle can be overturned under the driving of gas during working to open the separation port 12, and the separation port 12 can be closed under the self gravity during shutdown to further prevent dust in the dust storage cavity 3 from flowing back to the filtering area.

Specifically, the double-cavity dust-gas separation device further comprises a clamping support 8. Please refer to fig. 8-10, fig. 8 is a schematic structural view of a clamping bracket according to embodiment 2 of the present invention, fig. 9 is a schematic structural view of a separator, the clamping bracket and the first filter member according to embodiment 2 of the present invention, fig. 10 is an assembly schematic view of a separator, the clamping bracket and the first filter member according to embodiment 2 of the present invention, the clamping bracket 8 is detachably mounted on a side surface of the separator 7 facing the dust cup 6, the first filter member 43 is fixed to the clamping bracket 8 in a limited manner, and the shaft body 14 is detachably mounted on the clamping bracket 8, so as to fix the clamping bracket 8 and the separator 7; the second filter member 44 is fixed between the partition 7 and the lid 5. The first filtering area 41 is communicated with the second filtering area 42 through the filtering inlet 71, the first filtering part 43 and the second filtering part 44 are coaxially arranged on two sides of the filtering port, air can sequentially pass through the first filtering part 43 and the second filtering part 44 when entering the second filtering area 42 from the first filtering area 41 through the filtering inlet 71 under the action of suction force, and small-particle dust entrained by the air can be intercepted, so that the further dust-air separation effect is achieved. Utilize spacing mode to realize that first filtration piece 43 and second filtration piece 44 are fixed, when neither influencing the air flow, the dismouting is easy and simple to handle, and the follow-up consumptive material of being convenient for filters the change of piece.

As an optional implementation manner, in this embodiment, the clamping bracket 8 is a net-basket-shaped structure, and includes a bracket supporting plate 81, a bracket limiting ring 82 and a plurality of connecting strips 83, wherein the bracket supporting plate 81 is circular, the bracket limiting ring 82 is a circular ring, two ends of each connecting strip 83 are respectively fixedly connected with the bracket supporting plate 81 and the bracket limiting ring 82, and the plurality of connecting strips 83 are uniformly arranged along the circumference of the bracket supporting plate 81, a plurality of first bracket clamping pieces 84 are convexly arranged on the edge of the bracket limiting ring 82, and the first filtering pieces 43 are sleeved outside the connecting strips 83 and are limited between the bracket limiting ring 82 and the bracket supporting plate 81.

The shaft 14 may be detachably mounted on the bracket supporting plate 81 by means of a fixing screw or a snap-fit, and the shaft 14 may be further designed and processed into a hollow structure to reduce the weight.

A plurality of second support clamping pieces 72 are convexly arranged on the surface of one side, facing the dust cup 6, of the separating piece 7, the plurality of second support clamping pieces 72 are arranged around the filtering inlet 71 at intervals, and each second support clamping piece 72 extends along the direction close to the center of the filtering inlet 71; a plurality of first bracket fasteners 84 are correspondingly captured between the spacer 7 and the second bracket fasteners 72. By means of the cooperation of the first support clamping piece 84 and the second support clamping piece 72, the clamping pieces can be installed and disassembled simply through rotation operation, and the fixing stability is good, and the disassembling and assembling operation is simple and convenient.

As an optional implementation manner, in this embodiment, the dust cup 6 is detachably fixed to the cover 5 by a fastening component and a buckling component, and the buckling component and the fastening structure are disposed on two sides of the dual-chamber dust-air separating apparatus opposite to each other.

Specifically, the fastening assembly includes a plurality of first fastening structures 91 and a plurality of second fastening structures 92 movably fastened to the first fastening structures 91, please refer to fig. 3 and fig. 11, fig. 11 is a schematic view of the first fastening structure and the second fastening structure according to embodiment 2 of the present invention, the plurality of first fastening structures 91 are disposed at the edge of the dust cup 6, and the plurality of second fastening structures 92 are disposed on the surface of the cover 5; as an optional implementation manner, in this embodiment, the first fastening structure 91 includes a fastening connection portion 911 and a fastening limiting portion 912, the fastening connection portion 911 is protruded at an edge of the dust cup 6, and the fastening limiting portion 912 is fixedly disposed at an end of the fastening connection portion 911 and extends from the dust cup 6 toward the cover 5, and may be a trapezoid, wedge, or triangular column-shaped protrusion; the second buckle structure 92 is a buckle hole opened on the surface of the lid 5, and the buckle limiting portion 912 is correspondingly buckled and penetrated in the buckle hole; it should be noted that, in the present embodiment, the specific structures of the first fastening structure 91 and the second fastening structure 92 are only illustrated by way of example, and the positions of the two structures can be interchanged according to actual situations, that is, the fastening limiting portion 912 is protruded on the lid 5, and the edge of the dust cup 6 is provided with a limiting hole, or other movable engaging structures are adopted, as long as the lid 5 and the dust cup 6 can be detachably fixed. Utilize first buckle structure 91 and second buckle structure 92's activity joint, realize the fixed between lid 5 and the dirt cup 6, the good and dismouting of fixed stability is easy and simple to handle, is convenient for follow-up unpick and wash.

Please refer to fig. 2, 4 and 12-13 simultaneously, fig. 12 is a schematic view of a structural state of the fastening assembly according to embodiment 2 of the present invention, fig. 13 is a schematic view of a structural state of the fastening assembly according to embodiment 2 of the present invention, the fastening assembly includes a fastening member 93 and a fastening member 94, the fastening member 93 is convexly disposed on the outer surface of the dust cup 6, one end of the fastening member 94 is pivotally mounted on the surface of the lid 5, the other end of the fastening member is movably engaged with the fastening member 93, the fastening member 94 can be pressed and fastened to the lid 5 from top to bottom during the fastening, the fixing stability is good, the fastening member 94 can be released from the fastening with the fastening member 93 by turning over, the dismounting operation is simple, and the subsequent dismounting and washing is convenient.

Further preferably, the crimping assembly further comprises an elastic member 95; the corresponding positions of the two opposite outer side surfaces of the buckling piece 94 are respectively provided with a rotating shaft body 96 in a protruding way along the horizontal direction, the position of the cover body 5 corresponding to the rotating shaft body 96 is provided with a rotating shaft hole 51, and the rotating shaft body 96 is correspondingly and movably arranged in the rotating shaft hole; the holding part 94 includes a first end 941 and a second end 942 fixedly connected, the first end 941 and the second end 942 are respectively located at two sides of the rotation axis of the holding part 94; in this embodiment, the elastic element 95 is a compression spring, the elastic element 95 is limited between the cover 5 and the first end 941, the elastic element 95 acts on the first end 941, and the elastic force drives the pressing element 94 to rotate around its rotation axis, so that the second end 942 is movably engaged with the engaging element 93.

The buckling assembly is matched with the buckling structure, and the cover body 5 and the dust cup 6 are fixed from two sides of the double-cavity dust-gas separating device, so that the structure is more stable; in the fastening assembly, the second end 942 of the fastening member 94 is movably fastened with the fastening member 93 by the elastic force of the elastic member 95, and the lid 5 is fastened to the dust cup 6 by pressing the fastening member 94 and the lid 5 together, as shown in fig. 12, so as to ensure the tight fit connection of the two, so as to maintain the tightness of the filtering area 4, and avoid the decrease of the suction force due to gas leakage and the influence on the dust-gas separation effect; when the dust storage chamber is detached and cleaned, the fastening member 94 is pulled to turn over along the direction of the compressed elastic member 95, so that the second end 942 is no longer fastened with the fastening member 93, as shown in fig. 13, and the first fastening structure 91 and the second fastening structure 92 are separated from each other, so that the cover 5 can be separated from the dust cup 6, and dust collected in the dust storage chamber 3 can be poured out, and filter consumables can be cleaned or replaced.

Further preferably, elastic sealing members (not shown in the figures) are disposed between the cover 5 and the partition 7, between the partition 7 and the dust cup 6, and between the spiral duct member 6 and the dust cup 6, such as sealing sponge, sealing silica gel, etc., so as to ensure the sealing performance of each region in the filtering area 4 and ensure the dust-air separation and filtering effects.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims (10)

1. The utility model provides a dirt gas separation wind channel structure which characterized in that: the dust and air separation device comprises a spiral air duct, an air duct inlet and an air duct outlet, wherein the air duct inlet and the air duct outlet are arranged on the spiral air duct, a separation opening for dust and air separation is formed in the periphery of the spiral air duct close to the air duct outlet, and the cross section of at least one section of the spiral air duct is gradually reduced from the air duct inlet to the air duct outlet.

2. The dust-air separation air duct structure according to claim 1, characterized in that: the spiral duct is defined by duct walls; the air duct wall comprises a shaft body, an air duct inner wall and an air duct outer wall; the inner wall of the air duct is a spiral curved surface and is convexly arranged on the surface of the shaft body; the shaft body is located to the wind channel outer wall cover with outside the wind channel inner wall, the inboard surface of wind channel outer wall with the edge butt of wind channel inner wall, just the separation opening is seted up in the global of wind channel outer wall.

3. The dust-air separation air duct structure according to claim 2, characterized in that: the central axis of the shaft body is coincided with the spiral central axis of the spiral air duct, and the inner wall of the air duct is an Archimedes spiral surface which is coaxial with the shaft body.

4. A double-cavity dust-gas separation device is characterized in that:

a filter cavity and a dust storage cavity are formed in the double-cavity dust-gas separation device;

the filter cavity comprises a first filter area, a second filter area and the dust-gas separation air channel structure as claimed in claim 2 or 3; the outlet of the air duct is communicated with the first filtering area, and the first filtering area is communicated with the second filtering area; the separation port is communicated with the dust storage cavity, a first filtering piece is arranged in the first filtering area, and a second filtering piece is arranged in the second filtering area.

5. The dual chamber type dust-gas separating apparatus as claimed in claim 4, wherein: comprises a cover body, a dust cup and a separator;

the dust cup is detachably arranged on the cover body, the separating piece is limited between the cover body and the dust cup, the cover body and the separating piece are enclosed to form the second filtering area, the separating piece and the dust cup are enclosed to form the first filtering area, and the separating piece and the dust cup are enclosed to form the dust storage cavity;

the air duct inlet and the second filtering area are respectively communicated with the outside through a through hole formed in the dust cup, and the first filtering area and the second filtering area are communicated through a filtering inlet formed in the partition in a penetrating manner; the axis body is detachable to be fixed in the separator, the wind channel outer wall set up in the inboard surface of dirt cup.

6. The dual chamber dust and gas separation apparatus of claim 5, wherein:

the dust cup comprises a first cup part and a second cup part which are fixedly connected and arranged side by side, and the outer wall of the air duct is arranged on the inner side surface of the first cup part; the second cup part and the separator enclose to form the dust storage cavity; the separation opening is formed at a connection portion between the first cup portion and the second cup portion.

7. The dual chamber dust and gas separation apparatus of claim 5, wherein:

the clamping support is also included; the clamping support is detachably arranged on the surface of one side, facing the dust cup, of the separating piece, and the first filter piece is limited and fixed on the clamping support; the second filtering piece is fixed between the separating piece and the cover body in a limiting mode.

8. The dual chamber dust and gas separation apparatus of claim 7, wherein:

a plurality of first bracket clamping pieces are convexly arranged at the edge of the clamping bracket; a plurality of second support clamping pieces are convexly arranged on the surface of one side, facing the dust cup, of the separating piece at intervals along the circumferential direction of the filtering inlet, and the second support clamping pieces extend in the direction close to the center of the filtering inlet; the first support clamping piece is correspondingly limited between the separating piece and the second support clamping piece.

9. The dual chamber type dust-gas separating apparatus as claimed in claim 5, wherein:

the clamping device also comprises a clamping component and a buckling component;

the buckle assembly comprises a first buckle structure and a second buckle structure movably clamped with the first buckle structure, wherein the first buckle structure is arranged at the edge of the dust cup, and the second buckle structure is correspondingly arranged on the surface of the cover body;

the buckling and pressing component comprises a clamping piece and a buckling and pressing piece, the clamping piece is convexly arranged on the surface of the dust cup, one end of the buckling and pressing piece can be rotatably arranged on the surface of the cover body around a shaft, and the other end of the buckling and pressing piece is movably clamped with the clamping piece.

10. The dual chamber dust and gas separation apparatus of claim 5, wherein:

elastic sealing elements are arranged between the cover body and the separating piece and between the separating piece and the air duct outer wall and the air duct inner wall.

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