CN207627257U - Dust catcher - Google Patents

Abstract

A kind of dust catcher, including filter device, the filter device includes dust filtering column, it is sheathed on the cartridge filter of dust filtering marge side, it is connected to the end cap of cartridge filter, the dust filtration column is equipped with center pillar, the filter device further includes the lid for being installed on end cap, the end cap is equipped with multiple clamping pieces, the lid, which extends, is equipped with multiple pushing portions, the lid can be rotated from a first position to a second position along a direction of rotation around center pillar, when the lid is in first position, the multiple clamping piece is pushed by pushing portion and center pillar is clamped, the lid is rotated around center pillar to the second position from first position, each clamping piece is moved to the direction far from center pillar to release the clamping of center pillar.The utility model pushes end cap clamping piece to realize clamping center pillar by lid pushing portion, and during lid is rotated from first position to the second position, and each clamping part releases the clamping of center pillar, and structure novel is more practical.

Description

Dust catcher

【Technical field】

The utility model is related to a kind of dust catchers, especially with respect to its filter device.

【Background technology】

Dust catcher is common household cleaning equipment, has the function of detaching dust and clast from air.At present Until, filter device is the most frequently used and most effective realization gas, dirt separation solution.Filter device needs in use It removes in regular slave dust catcher, such as using a large amount of dust can be accumulated on the vacuum cleaner filtering equipment of a period of time, needs It is reinstalled after being removed cleaning, or the filter more renewed.Quick detachable filter matching carries the dust filtering of center pillar Column is the filter device of more practicality, and the patent of Publication No. CN101711657 discloses a kind of replaceable filter device, is wrapped A filter device holder (i.e. dust filtering column) is included, filter is set on the holder, and by having bullet in filter device one end Property material end emit, which emits with stomidium, and the support column (center pillar) when filter device is installed on holder passes through the stomidium, and Stomidium is set to be maintained at the smaller region of support column outer diameter；Notification number is that the patent of CN203328636 discloses a kind of replaceable mistake Device is filtered, end emits the stomidium for having and being emitted through the end, and the center pillar on filter mounting passes through stomidium, fixing button to be threadedly connected to In end cap, fixing button, which integrally extends, is equipped with multiple claws, and fixing button is threadedly connected to during end emits, the claw on fixing button It is strutted by center pillar, locks center pillar to which claw center pillar produces larger power；Notification number is the patent disclosure of US5783086 A kind of replaceable filter device, end, which emits in (i.e. end cap) to have, runs through the stomidium that the end emits, and the center pillar on filter mounting is worn The stomidium that end emits is crossed, fixing button is threadedly connected to the center pillar for being pierced by stomidium.The design provides a kind of new scheme.

【Utility model content】

Problem to be solved in the utility model is to provide a kind of dust catcher, and clamping dust filtering column centre-pillar structure is more real With.

In order to solve the above technical problems, the utility model adopts the following technical solution：A kind of dust catcher, including filtering dress It sets, the filter device includes dust filtering column, cartridge filter, end cap, and cartridge filter is sheathed on dust filtering marge side, and the dust filtration column is equipped with Center pillar, the filter device further include the lid being installed on the outside of end cap, and the end cap is equipped with multiple clamping pieces, and the lid prolongs It stretches and is equipped with multiple pushing portions, the lid can be rotated from a first position to a second position along a direction of rotation around center pillar, When the lid is in first position, the multiple clamping piece is pushed by pushing portion and center pillar is clamped, and the lid is from first It sets and is rotated to the second position around center pillar, each clamping piece is moved to the direction far from center pillar to release the clamping of center pillar.

The utility model pushes end cap clamping piece to realize clamping center pillar by lid pushing portion, and in lid from first position During rotation to the second position, each clamping part releases the clamping of center pillar, and structure novel is more practical.

These features and advantages of the utility model will the detailed exposure in following specific implementation mode, attached drawing.

【Description of the drawings】

Fig. 1 is the stereogram of the utility model dust catcher；

Fig. 2 is the partial cutaway view schematic of Fig. 1；

Fig. 3 is the stereogram of the utility model vacuum cleaner filtering equipment；

Fig. 4 is the exploded view of Fig. 3；

Fig. 5 is that Fig. 3 removes the stereogram after lid；

Fig. 6 be mono- angles of Fig. 3 longitudinal sectional view (section is parallel to axis b)；

Fig. 7 be another angles of Fig. 3 part amplify longitudinal sectional view (section is parallel to axis b)；

Fig. 8 is the transverse sectional view of mono- angles of Fig. 3 (section is in the state of being clamped perpendicular to axis b, center pillar)；

Fig. 9 is the transverse sectional view of another angles of Fig. 3 (for section perpendicular to axis b, center pillar, which is in, is not clamped state)；

Figure 10 is the vertical view of end cap；

Figure 11 is the stereogram of an angle of end cap；

Figure 12 is the upward view of end cap；

Figure 13 is the stereogram of another angle of end cap；

Figure 14 is the stereogram of one angle of lid；

Figure 15 is the vertical view of lid；

Figure 16 is the stereogram of another angle of lid.

【Specific implementation mode】

The technical solution of the utility model embodiment is explained with reference to the attached drawing of the utility model embodiment and Illustrate, but following embodiments are only the preferred embodiment of the utility model, and not all.Based on the implementation example in the implementation mode, Those skilled in the art's obtained other embodiment without making creative work, belongs to the utility model Protection domain.

Shown in Fig. 3, dust catcher has dust barrel 1, head 2, filter device 3.Dust barrel 1 offers air inlet 10, The bottom of dust barrel 1 is set there are four castor 11.Head 2 is installed on 1 upper end of dust barrel and (does not scheme with motor (not shown), impeller Show), gas outlet 20.Filter device 3 is contained in dust barrel 1, and filter device 3 is fluidly connected between air inlet 10 and impeller, is used To filter dust.When dust catcher works, motor driven impeller, which generates negative pressure, makes the air-flow of inclusion of dirt flow into dirt from air inlet 10 Bucket 1 flows into head 2 after the filtering of filter device 3, then dust catcher is discharged via gas outlet 20.

With reference to shown in Fig. 3 to Figure 16, filter device 3 includes dust filtering column 4, is sheathed on the cartridge filter 92 in 4 outside of dust filtering column, even Lid 7, sealing ring 8, end ring 90, the pallet 91 for being connected to the end cap 6 of 92 one end of cartridge filter, being installed on 6 outside of end cap.End ring 90 with End cap 6 is located at the opposite end of cartridge filter 92, and end ring 90 is connected to the upper end of cartridge filter 92, and end ring 90 uses flexible material, close It is encapsulated in 91 lower end of pallet periphery, pallet 91 is locked in 2 lower face of head.End cap 6 has the stomidium 60 of perforation, pair on dust filtering column 4 One end of end cap 6 is answered to be equipped with the center pillar 40 across stomidium 60.End cap 6 is equipped with multiple to compress the clamping piece 61 of center pillar 40, lid For body 7 along a direction of rotation a in 40 rotary course of center pillar, lid 7 pushes each clamping piece 61 to make these folders to the movement of center pillar 40 Center pillar 40 is clamped in gripping member 61.For the utility model in 7 rotary course of lid, lid 7 pushes clamping piece 61 gradually to be moved to center pillar 40 It moves and center pillar 40 is finally clamped, convenient and efficient, easy to use, 40 good fixing effect of center pillar can also form the clamping in end cap 6 The state that 61 coverd part 7 of part is supported with center pillar 40, conducive to being fixed to each other between lid 7 and end cap 6.Lid 7 is against direction of rotation a In rotary course, each clamping piece 61 is moved to the direction far from center pillar 40 to release the clamping of center pillar 40.In present embodiment The quantity of clamping piece 61 is two, is only example, quantity is not limited, and can be arranged as required to.

Lid 7 is rotated when rotating around the axis b across stomidium 60 and lid 7, and in present embodiment, axis b is The center line of cartridge filter 92 is also the center line of center pillar 40, and axis b passes through center pillar 40, center pillar 40 to be parallel to axis b.Lid 7 is set There are multiple pushing portions 70, pushing portion 70 to be corresponded with clamping piece 61, in 7 rotary course of lid, each pushing portion 70 follows lid 7 Rotation.When lid 7 is in a first position (ginseng Fig. 8, center pillar 40 is clamped at this time, and convex block 72 is by 55 backstop of retaining wall), respectively push Portion 70 compresses corresponding clamping piece 61 towards center pillar 40 makes these clamping pieces 61 that center pillar 40 be clamped, and lid 7 is from first position in During the rotation of column 40 a to second position (ginseng Fig. 9, at this point, center pillar 40 is released from clamping, convex block 72 is located in opening 54), respectively Pushing portion 70 follows the rotation of lid 7 and multiple clamping pieces 61 are moved to far from 40 direction of center pillar to release the folder of center pillar 40 It holds.First position, the second position be proposed to be convenient for description technique scheme, Fig. 8, Fig. 9 are only a kind of example, first position The state that center pillar 40 is clamped need to only be corresponded to, the second position need to only correspond to the state that center pillar 40 is released from clamping.

For lid 7 along direction of rotation a in 40 rotary course of center pillar, each pushing portion 70 follows lid 7 to rotate, and pushes and corresponds to Clamping piece 61 to center pillar 40 movement make multiple clamping pieces 61 be clamped center pillar 40.Clamping piece 61 is equipped with away from the side of center pillar 40 62, lid 7 along direction of rotation a in 40 rotary course of center pillar, each pushing portion 70 along corresponding clamping piece 61 side 62 Sliding, and side 62 is pushed to push corresponding clamping piece 61 to be moved to center pillar 40.

The side 62 of clamping piece 61 is convex surface, and in a rotation processes of direction of rotation, pushing portion 70 slips over lid 7 successively An arbitrary first area and a second area on side 62；When lid 7 is in any between first position and the second position When position, the vertical range of axis b of the second area apart from lid 7 is more than vertical range of the first area apart from axis b.Lid 7 each pushing portions 70 when being in first position stick on a third region on the convex surface of corresponding clamping piece 61 respectively, and lid 7 is in Each pushing portion 70 sticks on a fourth region on the convex surface of corresponding clamping piece 61 respectively when the second position, and lid 7 is in first The vertical range of axis b of the second area apart from lid 7 is more than first area when any position between position and the second position Vertical range apart from axis b.

By the region that pushing portion 70 slips over include the areas Ge Xian in a plane of axis b on side 62 Domain, i.e. line region are the plane and intersected by the region that pushing portion 70 slips on side 62；Lid 7 is located at first When setting, pushing portion 70 is less than pushing portion 70 along the vertical range of direction of rotation a point to the axis b first slipped on line region Vertical range of the point slipped over afterwards to axis b；When lid 7 is in the second position, pushing portion 70 is along the rotation on line region Turn point that direction a is first slipped over be less than to the vertical range of axis b the point that is slipped over after pushing portion 70 to axis b vertical range；When When lid 7 is in any position between first position and the second position, pushing portion 70 is along the direction of rotation a on line region The vertical range of the point first slipped over to axis b are less than after pushing portion 70 point that slips over to the vertical range of axis b.

Clamping piece 61 is integrated the cantilevered leg for being connected to end cap 6, is in bending, extends perpendicularly to the axis of lid 7 b.Clamping piece 61 includes the elastic portion 63 integrally extended from end cap 6 and the clamping part 64 that own elasticity portion 63 extends further out, Center pillar 40 is clamped by set clamping part 64 in each clamping piece 61.Lid 7 is respectively clamped against in a rotary courses of direction of rotation Portion 64 moves under the elastic force effect of corresponding elastic portion 63 to the direction far from center pillar 40, to release the folder of center pillar 40 It holds.Side 62 is set to clamping part 64, and pushing portion 70 pushes clamping part 64 to be moved to center pillar 40 by the deformation of elastic portion 63.Folder It holds portion 64 and is additionally provided with the concave surface 65 back to convex surface, deformation mouth 66, concave surface 65 presses on center pillar when center pillar 40 is clamped in each clamping piece 61 40, concave surface 65 is in the arc being adapted with the gabarit of center pillar 40, preferably arc-shaped.Clamping part 64 is in far from the directions axis b The arc of protrusion.Mouth 66 is deformed between convex surface and concave surface 65, to reduce deformation when clamping part 64 is molded.Clamping part 64 For a part for cam, have the effect of similar cam, convex surface is cam surface, lid 7 in a rotary courses of direction of rotation, The amplitude that pushing portion 70 compresses clamping piece 61 to center pillar 40 or axis b is increasing so that clamping piece 61 is more next apart from center pillar 40 Closer and center pillar 40 is finally clamped, the region distance axis b of the free end of the clamping piece 61 on convex surface belonging to be proximate to is remoter.

Clamping piece 61 is additionally provided with the first block reinforcement 67, and the first block reinforcement 67 protrudes from concave surface 65.Center pillar 40 is equipped with head 41, clamping Part 61 by be clamped head 41 center pillar 40 is clamped, when clamping piece 61 be in clamp head 41 state when, the first block reinforcement 67 In head 41 upside and along the projection of axis b, (projection along axis b is that projecting direction is parallel to the throwing of axis b with head 41 Shadow) it is least partially overlapped, even if clamping piece 61 is inadequate to the frictional force on head 41 when so design clamps or center pillar 40 is by external force Pull-up, the first block reinforcement 67 can backstop between the upside of head 41 is to prevent head 41 from being detached from each clamping piece 61.In present embodiment In, the first block reinforcement 67 is set to clamping part 64.Clamping piece 61 is additionally provided with the third that guiding center pillar 40 is inserted between these clamping pieces 61 Guide ramp 68, third guide ramp 68 are tilted relative to axis b, and third guide ramp 68 tilts relatively with stomidium 60, third A part for guide ramp 68 constitutes the upper side of the first block reinforcement 67.Third guide ramp 68 is located at 61 upside of clamping piece, and sets In corresponding clamping part 64.When convex block 72 is located in opening 54, projection of first block reinforcement 67 with head 41 along axis b is staggered It opens, center pillar 40 freely can be inserted into or be detached between each clamping piece 61 at this time.

End cap 6 be equipped with from its outer side to the sunk area 50 of 92 sunken inside of cartridge filter, corresponding sunk area 50 bottom plate 51, Multiple the first side walls 52, from each the first side wall 52 bend extend baffle 53, opening 54, retaining wall 55, multiple second sidewalls 56, First annular muscle 590.The first side wall 52 extends from bottom plate 51, is arc-shaped；Second sidewall 56 is extended from bottom plate 51, in circle Arc, second sidewall 56 are disposed around 40 periphery of center pillar, and the internal diameter of second sidewall 56 is more than the outer diameter of the first side wall 52；Retaining wall 55 It is connected between bottom plate 51 and baffle 53, retaining wall 55 is vertical and is integrally connected to bottom plate 51.The first side wall 52, second sidewall 56, Baffle 53, opening 54, retaining wall 55, first annular muscle 590 are located in sunk area 50, and the outer diameter of lid 7 is less than sunk area 50 Internal diameter, lid 7 be located at or part be located at sunk area 50 in.Bottom plate 51 is equipped with and each baffle 53 in the periphery of the first side wall 52 Multiple ports 570 of corresponding perforation bottom plate 51 separately form between port 570 and baffle 53 and are located at 52 periphery of the first side wall Sliding slot 571, separately form the sliding slot 571 for being located at the periphery of the first side wall 52 between bottom plate 51 and baffle 53 in other words, first Side wall 52 and baffle 53 constitute the cell wall of sliding slot 571.Baffle 53 along axis b projection by corresponding port 570 along the throwing of axis b Shadow covers, since baffle 53 is in sunk area 50, baffle 53 demoulded when being molded it is relatively difficult, the setting of port 570 be convenient at It is demoulded along axis b when type baffle 53 so that the molding of baffle 53 becomes easy；Baffle 53 is equipped with guiding convex block 72 and enters opening 54 The second guide ramp (not shown) of first guide ramp 530 and the guiding abjection of convex block 72 opening 54, the first guide ramp 530 It is in splayed in the downside of the second guide ramp and with the second guide ramp；Convex block 72 is limited in opening 54 after entering opening 54 It is interior, be open 54 circumferential size be less than convex block 72 circumferential size；When lid 7 is separated end cap 6, need to apply certain outer Opening 54 can be strutted certain amplitude to deviate from opening 54 by power, convex block 72 under the guiding of the second guide ramp.Present embodiment In, convex block 72 can be caught in opening 54 along axis b when assembling, therefore the 54 pairs of convex blocks 72 that are open have certain retentivity, are conducive to convex The lid 7 when being open 54 position of block 72 is held in end cap 6；The both sides of convex block 72 are respectively equipped with to guide the loading of convex block 72 and open 6th guide ramp 720 of mouth 54.Baffle 53 is located at the two opposite sides of the first side wall 52 with clamping piece 61；Baffle 53 is from each first Side wall 52 extends radially outwardly.Sliding slot 571 hangs down along the circumferentially extending around axis b, the extending direction and baffle 53 of sliding slot 571 Directly in axis b.

Clamping piece 61 extends from the first side wall 52, and the first side wall 52 is disposed around 40 periphery of center pillar, and the first side wall 52 is in circle The elastic portion 63 of arc, clamping piece 61 is integrally connected to the first side wall 52.At the outer rim of second sidewall 56 and the outer rim of baffle 53 In (i.e. the two outer diameter is equal) on same circumference.

56 staggered points of each the first side wall 52 and the 56 staggered distribution of each second sidewall, each baffle 53 and each second sidewall Cloth separately forms the opening 54 between one end of each second sidewall 56 and one end of each baffle 53, retaining wall 55, which has, to deviate from First lateral margin 551 of center pillar 40 and the second lateral margin 550 between the first lateral margin 551 and center pillar 40, the first side wall 52 is from Two lateral margins 550 extend against direction of rotation a, and second sidewall 56 extends from the first lateral margin 551 along direction of rotation a.Retaining wall 55 with Opening 54 is located at the opposite end of sliding slot 571, and convex block 72 is limited to rotate between retaining wall 55 and opening 54, to limit lid 7 Rotation angle, lid 7 is unable to 360 degree rotation.Retaining wall 55 is located at the opposite end of baffle 53 with opening 54.Second sidewall 56 is set There is guiding convex block 72 to enter the 5th guide ramp 560 of opening 54, the 5th guide ramp 560 is located at the first guide ramp 530 The two opposite sides of opening 54, the 5th guide ramp 560 and the second guide ramp are located at the two opposite sides of opening 54.

Lid 7 is extended radially inwardly equipped with cover board 73, the annular side plate 71 for being integrally connected to 73 periphery of cover board, from side plate 71 Multiple aforementioned convex blocks 72.Convex block 72 can be packed into opening 54 along the direction for the b that parallels to the axis and turn further around axis b when installing lid 7 It is dynamic to enter sliding slot 571；Baffle 53 reclines convex block 72 and between convex block 72 and cover board 73 when convex block 72 is located in sliding slot 571； The end of side plate 71, which extends radially outwardly, is formed with annular flange 710, and flange 710 is equipped with to the ring being recessed far from 51 direction of bottom plate Shape slot 711, stomidium 60, each the first side wall 52, each port 570 are located in the region that first annular muscle 590 is enclosed, first annular muscle 590 enter in annular groove 711 and compress the sealing ring 8 in annular groove 711 to far from 51 direction of bottom plate, and convex block 72, which is located at, to be slided Baffle 53 is pressed on when in slot 571.First annular muscle 590 can also be set to lid 7, correspondingly, annular groove 711 is set to end cap 6.End Hole 60 is irregular shape, and clamping piece 61 is covered along projection of the projection by stomidium 60 along axis b of axis b, due to clamping piece 61 are in sunk area 50, and clamping piece 61 demoulds relatively difficult when being molded, stomidium 60 is arranged such and is not only passed through for center pillar 40, also Have the function of convenient for being demoulded when damper for forming 53 so that the molding of baffle 53 becomes easy.

Side plate 71 forms host cavity with cover board 73, and pushing portion 70 is contained in host cavity and is integrally upwardly extended from cover board 73 Go out, convex block 72 is contained in host cavity and integrally extends from side plate 71.Pushing portion 70 extends along the direction for being parallel to axis b, convex Block 72 extends along perpendicular to the direction of axis b.Baffle 53, the first side wall 52, second sidewall 56, clamping piece 61 are contained in receiving Chamber.Lid 7 is additionally provided with several reinforcing ribs 76, and reinforcing rib 76 is connected between cover board 73 and pushing portion 70, and reinforcing rib 76 also connects Between side plate 71 and pushing portion 70.

Side of the pushing portion 70 towards center pillar 40 is equipped with the second block reinforcement 700, when clamping piece 61 is in the shape of clamping center pillar 40 When state, the second block reinforcement 700 is adjacent positioned at the upside of clamping piece 61 and least partially overlapped along the projection of axis b with clamping piece 61, Thus when outer force effect makes the clamping of 40 clamping piece 61 to be upwardly separated from of center pillar, due to rubbing between center pillar 40 and clamping piece 61 Wipe power, center pillar 40 can drive clamping piece 61 to be deflected up, the second block reinforcement 700 can backstop clamping piece 61 and inhibit clamping piece 61 upward Deflection.When clamping piece 61 is in the state for clamping center pillar 40, the second block reinforcement 700 and clamping piece 61 recline or between axis b Gap is 0mm-3mm, preferably 0.5mm or 1mm.When convex block 72 is located in opening 54, the second block reinforcement 700 is with clamping piece 61 along axis The projection of line b is staggered, and second block reinforcement 700 is not interfered with each other with clamping piece 61 when convex block 72 is packed into opening 54, to second gear Muscle 700 does not interfere convex block 72 to be packed into opening 54.Pushing portion 70 is equipped with compresses face 701 to compress side 62, compresses face 701 For the curved surface to match with side 62, the second block reinforcement 700 protrudes from the face of compressing 701, and it can be arc-shaped or non-circular arc to compress face 701 Shape, compressing face 701 is preferably：Compress the region distance axis b that face 701 is more proximate to the elastic portion 63 of corresponding clamping piece 61 It is closer.

Lid 7 is additionally provided with the third block reinforcement 702 positioned at the downside of clamping piece 61, clamping piece 61 and about 702 third block reinforcement It reclines or there is a upper and lower gap, when clamping piece 61 is in the state for clamping center pillar 40 and/or when convex block 72 is located at opening 54 When interior, clamping piece 61 is Chong Die along the projection section of axis b with third block reinforcement 702, to 702 backstop clamping piece 61 of third block reinforcement And inhibit 61 downwards of clamping piece.Third block reinforcement 702 is 0mm-3mm along the gap of axis b with clamping piece 61, preferably 0.5mm or 1mm.Third block reinforcement 702 is connected between each pushing portion 70.Third block reinforcement 702 is from cover board 73 along the side for the b that parallels to the axis To integrally extending, and it is connected between pushing portion 70.

End cap 6 is additionally provided with several guide members 74 and the second circular bar 75.Guide member 74 is located at 6 inside of end cap and is distributed in end 60 periphery of hole, guide member 74 are equipped with the 4th guide ramp 740 that guiding center pillar 40 is inserted into stomidium 60.Stomidium 60 and each guide member 74 In the range of the delineation of the second circular bar 75, each guide member 74 is in 75 integrally connected of the second circular bar, and the first side wall 52 is along axis The projection of line b is covered by the second circular bar 75 along the projection of axis b, and port 570 also is located at the periphery of the second circular bar 75, the Second ring muscle 75 is in circular ring shape.

Join Fig. 4, Fig. 5, whole dust filtering column 4 is in frame-type, vertical muscle 42 equipped with longitudinal arrangement, with the integrated molding of vertical muscle 42 and hand over The circular bar 43 of fork, bottom wall 44, bottom wall 44 are spaced relatively with bottom plate 51, and center pillar 40 extends from 44 central integral of bottom wall.Filtering 92 lateral surfaces of cylinder form spaced ridge 920 or fold, and the hole of filtering dust is distributed with.

In the present invention, "upper", "lower", " side ", "inner", "outside" be to each object in icon relative position Description, but these wordings are not to limit component, composition, region etc.；For quantity, multiple is only example, can be according to need It is arranged.

More than, only specific embodiment of the present utility model, but protection scope of the utility model is not limited thereto, It is familiar with the those skilled in the art and should be understood that the utility model includes but not limited to attached drawing and above in specific implementation mode The content of description.The modification of any function and structure principle without departing from the utility model is intended to be included in the model of claims In enclosing.

Claims (12)

1. a kind of dust catcher, including filter device, the filter device includes dust filtering column, cartridge filter, end cap, and cartridge filter is sheathed on Dust filtering marge side, the dust filtration column are equipped with center pillar, it is characterised in that：The filter device further includes the lid being installed on the outside of end cap Body, the end cap are equipped with multiple clamping pieces, and the lid, which extends, is equipped with multiple pushing portions, and the lid can be along a direction of rotation Rotated from a first position to a second position around center pillar, when the lid is in first position, the multiple clamping piece by Pushed section pushes and center pillar is clamped, and the lid is rotated around center pillar to the second position from first position, and each clamping piece is to remote It moves to release the clamping of center pillar in direction from center pillar.

2. dust catcher according to claim 1, it is characterised in that：The clamping piece includes clamping part, and clamping part is in remote Arc from center pillar direction protrusion, clamping part have away from the side of center pillar, and the lid is along the direction of rotation around center pillar In rotary course, each pushing portion slides along the side of corresponding clamping part and pushes the side.

3. dust catcher according to claim 2, it is characterised in that：The side is to the cam protruded far from center pillar direction Face.

4. dust catcher according to claim 1, it is characterised in that：The lid is equipped with cover board and is integrally connected to outside cover board The annular side plate in week, the pushing portion are integrally extended upward from cover board.

5. dust catcher according to claim 1, it is characterised in that：Clamping piece includes elastic portion, is connected to the folder of elastic portion Portion is held, when the lid is in first position, center pillar is clamped in the multiple clamping part, and the lid is revolved from first position around center pillar It goes to during the second position, each clamping part is moved to the direction far from center pillar to solve under the elastic force effect of corresponding elastic portion Except the clamping of center pillar.

6. dust catcher according to claim 1, it is characterised in that：The clamping piece is integrated the overhanging for being connected to end cap Arm, the axis for extending perpendicularly to center pillar of the clamping piece.

7. dust catcher according to claim 1, it is characterised in that：The end cap is equipped with sliding slot, and the lid is equipped with convex Block, convex block can follow lid to rotate along sliding slot.

8. dust catcher according to claim 7, it is characterised in that：The end cap is additionally provided with multiple the first side walls, multiple gears Plate, the self-corresponding the first side wall of clamping piece integrally extend, and baffle extends from the first side wall, and the first side wall and baffle are constituted and slided The cell wall of slot, baffle is to backstop convex block to prevent lid to be detached from end cap.

9. dust catcher according to claim 7, it is characterised in that：The lid is equipped with cover board and is integrally connected to outside cover board The annular side plate in week, the convex block integrally extend from side plate.

10. dust catcher according to claim 7, it is characterised in that：Side plate forms host cavity, the convex block receiving with cover board In host cavity, the convex block is extended radially inwardly from side plate, and sliding slot is along the circumferentially extending around middle mast axis, the extension of sliding slot Direction is perpendicular to middle mast axis.

11. dust catcher according to claim 1, it is characterised in that：The clamping piece includes elastic portion, is connected to elastic portion Clamping part.

12. dust catcher according to claim 1, it is characterised in that：The end cap is connected to cartridge filter lower end, the end cap Stomidium with perforation, the center pillar pass through the stomidium of end cap to enter lid.