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CN102920395A - Double-side self-cleaning linkage structure for filter cartridge of dust collector - Google Patents

Double-side self-cleaning linkage structure for filter cartridge of dust collector Download PDF

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Publication number
CN102920395A
CN102920395A CN 201110225761 CN201110225761A CN102920395A CN 102920395 A CN102920395 A CN 102920395A CN 201110225761 CN201110225761 CN 201110225761 CN 201110225761 A CN201110225761 A CN 201110225761A CN 102920395 A CN102920395 A CN 102920395A
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CN
China
Prior art keywords
filter cartridge
linkage structure
permanent magnet
box
box body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN 201110225761
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Chinese (zh)
Inventor
李洋
穆道津
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Electronics Tianjin Appliances Co Ltd
Original Assignee
LG Electronics Tianjin Appliances Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LG Electronics Tianjin Appliances Co Ltd filed Critical LG Electronics Tianjin Appliances Co Ltd
Priority to CN 201110225761 priority Critical patent/CN102920395A/en
Publication of CN102920395A publication Critical patent/CN102920395A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a double-side self-cleaning linkage structure for a filter cartridge of a dust collector and belongs to filters of dust collectors. The double-side self-cleaning linkage structure comprises a box cover in the upper part in which an air inlet is formed, a rectangular box body which is fastened with the box cover and at the bottom of which an exhaust grille is formed, and filter paper in a continuously folded shape in the box body, wherein a power transmission rod and a driving bevel gear are arranged in the box body; a driven bevel gear and upper and lower screw rods are driven to rotate; a brush rod with a permanent magnet is driven to reciprocate in front of the filter paper; and a vibration rod, which is driven by the permanent magnet on the brush rod, is provided with the permanent magnet and a plurality of elastic shifting pieces and is synchronously linked, is arranged in a chute formed in a slideway rack outside the box bottom. By the design, the positive and reverse sides of the filter paper in the filter cartridge can be simultaneously self-cleaned, a self-cleaning effect is improved, the attraction of the dust collector is maintained, and trouble of cleaning the filter cartridge is avoided.

Description

The two-sided automatically cleaning linkage structure of the filter cartridge of dust catcher
Technical field
The present invention relates to the filter of dust catcher, specifically the two-sided automatically cleaning linkage structure of a kind of filter cartridge of dust catcher.
Background technology
Dust suction is a kind of sanitation and hygiene electrical equipment, is used for removing the dust in ground, carpet, wall, furniture, clothing and various slits.Dust catcher comprises the motor of dust collector that is generated suction by the electric current that imports substantially, forms motor air inlet, suction nozzle, hose, dust separation and the filter of air path system, and the dust collect plant that gathers inhalation (inhalatio).
Profile classification according to dust catcher can be divided into vertical type dust collector, horizontal (pot type) dust catcher and portable dust collector etc.
In dust catcher when running,, the impeller High Rotation Speed of driven by motor blower fan is gone out the air exhausting of dust catcher inside, forms instantaneous vacuum in the inside of dust catcher, and forms a quite high Negative Pressure Difference between the ambient atmosphere.Under the effect of this Negative Pressure Difference, near the foreign substances such as dust the suction nozzle are together with air, together by in the dust bucket in the air entry suction body.The air that contains the foreign substances such as dust in the dust bucket of body through dust separation, filter after, be discharged to again the dust catcher outside from the gas outlet.Like this, just reach the effect of dust out, clean floor.The suction rate of dust catcher is divided into a plurality of gears that operate control, adapts to the scope of operation of the different cleaning objects such as ground, bed surface, carpet, sofa, corner, better suction dust everywhere.
In the horizontal dust collector body, enter dust-collecting cylinder through foreign substances such as the isolated dusts of cyclone separator through the dust fall mouth, for clearance; And discharge after the filtration of gas by preposition filter cartridge inner filtration sponge after separating.
Fig. 1 is the perspective view of filter cartridge in the prior art, and Fig. 2 is the perspective view of prior art filter paper.As shown in the figure, 2 are formed with air discharge grille 8 at the bottom of the box of the preposition filtration cartridge 1 of rectangle, and sponge 3 is filtered in box body 1 interior installation, and the lid 5 that top is formed with air inlet 4 fastens with box body 1.Box body 1 bottom is formed with in dust catcher body (not shown) the firm pin 6 of settling the location, lid 5 tops one side be formed be convenient to install guide and support hole 7.Filtering sponge 3 is and the corresponding rectangular section bar of box body 1 shape.
In the filter of horizontal dust collector, filter sponge 3 as the filtering material except frequent employing, also often select the filter paper 9 of the shape constant amplitude gauffer of turning back continuously as filtering material.But the box body 1 interior filter paper of turning back continuously 9 cleanings get up also to have much difficulty.
The working condition of the filter cartridge of brief description prior art.
Dock with 4 sealings of the circular air inlet of preposition filter cartridge 1 gas outlet (not shown) of horizontal dust collector body internal cyclone separators, the gas that has separated the foreign substances such as dust through air inlet 4 enter built-in filtration sponge 3 or filter paper 9(not shown) filtration cartridge 1 in, the fine dust particle is trapped in the filtration sponge 3, or filter paper 9 one sides, and the gas after filtering, under the effect of dust sucting motor negative-pressure sucking, 2 air discharge grille 8 is discharged at the bottom of the filter cartridge.
But in the user investigation to dust catcher, the puzzlement of user's maximum is the cleaning difficulty to filter cartridge.A lot of users think that filter cartridge is too dirty, and are unwilling to clean or cleaning, and the expectation filter cartridge is optimal without manual cleaning; In addition, dust stops up the dust catcher suction decline that brings in the filter cartridge, also is problem in the urgent need to address.Once had the dust catcher with self-cleaning function on the market, still, cleaning effect is limited, gives the user but perplexs.
Summary of the invention
The present invention is exactly in order to solve in the prior art, and filtering box of dust collector easily stops up, and, the problem of dismounting and cleaning inconvenience, and a kind of two-sided automatically cleaning linkage structure of filter cartridge of dust catcher is provided.
The present invention is according to following Technical Design.
The two-sided automatically cleaning linkage structure of the filter cartridge of a kind of dust catcher of the present invention, comprise that top is formed with the lid of air inlet, be interlocked with lid and box at the bottom of be formed with the rectangle box body of air discharge grille, and the filter paper of the shape of turning back continuously in the box body, and the power transmission pole that in box body, arranges and driving bevel gear, driven transmission bevel gear and upper and lower bolt rotary drive the brush stroke with permanent magnet and move back and forth in the filter paper front; In the slide groove that forms in the external slideway frame at the bottom of the box, be provided with the vibrating arm with permanent magnet and most individual elastic plectrum and synchronous interaction that permanent magnet drives on the brush stroke.
The present invention of design can be to filter paper positive and negative while automatically cleaning in filter cartridge like this, and filter cartridge the place ahead along moving at pleated filter paper transverse reciprocating, utilizes frictional force with hairbrush, cleaning filter paper surface dirt; At the filter paper rear, drive the plastics plectrum with spring, the pleated filter paper is patted, reach the simultaneously cleaning motion of filter paper front and back.Like this, the two kinds of different cleaning modes in front and back clean the front and back sides of a filter cartridge, improve the automatically cleaning effect, reach the suction of keeping dust catcher with this, and make client avoid the worry of cleaning and filtering box.
Description of drawings
Fig. 1 is the perspective view of filter cartridge in the prior art;
Fig. 2 is the perspective view that prior art is filtered sponge;
Fig. 3 is the perspective view of prior art filter paper;
Fig. 4 is the perspective view of filter cartridge of the present invention;
Fig. 5 is that filter cartridge of the present invention takes off the perspective view after lid removes filter paper;
Fig. 6 is the structure for amplifying schematic diagram of A section among Fig. 5;
Fig. 7 is the perspective view of looking side ways behind the filter cartridge of the present invention;
Fig. 8 is the perspective view after filter cartridge of the present invention takes off lid;
Fig. 9 is vertical profile side-looking structural representation of the present invention;
Figure 10 is the part perspective view of brush stroke and spring lever among the present invention;
Figure 11 is the perspective view of Elastic wave plate of the present invention.
Among the figure: 1. at the bottom of box body 2. boxes
3. filter sponge 4. air inlets
5. lid 6. pins
7. guide and support hole 8. air discharge grilles
9. filter paper 10. power transmission poles
11a. driving bevel gear 11b. driven bevel pinion
12a. screw rod under the upper screw rod 12b.
13. brush stroke 14. slideway shelfs
15a.15b. permanent magnet 16. elastic plectrums
17. vibrating arm 18. depressed parts
19. rotary joint 20. spin slots
21. slide groove 22. limiting blocks
23. magnetic suction head 24. springs
25. plastic sheet 26. bristles
27. reinforcement.
The specific embodiment
The present invention will be described in detail below in conjunction with drawings and Examples.
Dock with 4 sealings of the circular air inlet of preposition filter cartridge 1 gas outlet (not shown) of horizontal dust collector body internal cyclone separators, separated the gas of the foreign substances such as dust in air inlet 4 enters the filtration cartridge 1 of built-in filter paper 9, the fine dust particle is trapped on the filter paper 9, and the gas after filtering, under the effect of dust sucting motor negative-pressure sucking, 2 air discharge grille 8 is discharged at the bottom of the filter cartridge.
2 are formed with square frame-shaped air discharge grille 8 at the bottom of the box of the preposition filtration cartridge 1 of rectangle, turn back the excessively continuously filter paper 9 of shape constant amplitude gauffer of box body 1 interior installation, and the lid 5 that top is formed with air inlet 4 fastens with box body 1.Box body 1 bottom is formed with in dust catcher body (not shown) the firm pin 6 of settling the location, lid 5 tops one side be formed be convenient to install guide and support hole 7.Filter paper 9 is and the corresponding rectangular section bar of box body 1 shape.
Fig. 4 is the perspective view of filter cartridge of the present invention, and Fig. 5 is that filter cartridge of the present invention takes off the perspective view after lid removes filter paper, and Fig. 6 is the structure for amplifying schematic diagram of A section among Fig. 5, and Fig. 7 is the perspective view of looking side ways behind the filter cartridge of the present invention.
As shown in the figure, the two-sided automatically cleaning linkage structure of a kind of filter cartridge of dust catcher, comprise that top is formed with the lid 5 of air inlet 4, be interlocked with lid 5 and box at the bottom of the 2 rectangle box bodys 1 that are formed with air discharge grille 8, and the filter paper 9 of the box body 1 interior constant amplitude reductus shape of turning back continuously, and at power transmission pole 10 and the driving bevel gear 11a of box body 1 interior setting, driven transmission bevel gear 11b and upper and lower screw rod 12a, 12b rotate, and drive the brush stroke 13 with permanent magnet 15a and move back and forth in filter paper 9 fronts; 21 li of the slide grooves of 2 external slideway framves, 14 interior formation at the bottom of the box are provided with the vibrating arm 17 with permanent magnet 15b and most individual elastic plectrum 16 and synchronous interaction that permanent magnet 15a drives on the brush stroke 13.
Should illustrate, clear in order to illustrate, brush stroke 13 bottom surfaces among Fig. 5 are not shown to go out bristle 26.
The two-sided automatically cleaning linkage structure of the filter cartridge of described dust catcher, its power transmission pole 10 is arranged on a side in the box body 1, and two ends driving bevel gear 11a in opposite directions respectively with the driven bevel pinion 11b of upper and lower screw rod 12a, 12b one end engagement, power transmission pole 10 1 ends and box be automatic reverse electric rotating machine (not shown) coaxial rotation outward.The automatic reverse electric rotating machine adopts 24V, 20W stepper motor.
Fig. 8 is the perspective view after filter cartridge of the present invention takes off lid, and Fig. 9 is vertical profile side-looking structural representation of the present invention.
The two-sided automatically cleaning linkage structure of the filter cartridge of described dust catcher, its upper and lower screw rod 12a, 12b are separately positioned on box body 1 interior upper and lower, upper and lower screw rod 12a, 12b are parallel to each other, and number of threads, spacing are identical, and thread rotary orientation is opposite, the screw thread of upper screw rod 12a is left-handed, the screw thread dextrorotation of lower screw rod 12b.
Figure 10 is the part perspective view of brush stroke and spring lever among the present invention, and Figure 11 is the perspective view of Elastic wave plate of the present invention.
As shown in the figure, the two-sided automatically cleaning linkage structure of the filter cartridge of described dust catcher, its brush stroke 13 two ends form respectively the rotary joint 19 with arc-shaped recess 18, and rotary joint 19 be formed with respectively with the spin slot 20 of upper and lower screw rod 12a, the corresponding combination of 12b, rotary joint 19 the bottom surface, termination be equipped with permanent magnet 15a.
Described permanent magnet 15a, 15b adopt the rare earth strong magnetic material sheet of commercially available Surface field 120-160T.
The two-sided automatically cleaning linkage structure of the filter cartridge of described dust catcher, its slideway shelf 14 are formed at the bottom of the box 2 outer upper and lower sides in opposite directions, run through the two ends limited location in the slide groove 21 of 2 formation at the bottom of slideway shelf 14 and the box and keep off 22 spacing vibrating arms 17.
The two-sided automatically cleaning linkage structure of the filter cartridge of described dust catcher, permanent magnet 15b is formed on the end face with the corresponding in opposite directions side magnetic suction head 23 of brush stroke 13 rotary joints, 19 bottom surface permanent magnet 15a on its synchronization-moving vibrating arm 17.
The two-sided automatically cleaning linkage structure of the filter cartridge of described dust catcher, its most elastic plectrums 16 be arranged at a certain distance with brush stroke 13 vibrating arm 17 1 sides in opposite directions on.
The two-sided automatically cleaning linkage structure of the filter cartridge of described dust catcher, its elastic plectrum 16 are the affixed plastic sheets 25 of free end that are combined in vibrating arm 17 1 side upper springs 24.Implant respectively in plastic sheet 25 and the vibrating arm 17 at the two ends of described spring 24.
With reference to Fig. 4, on lid 5 surfaces, centered by air inlet 4, be formed with and carry high-intensity radial reinforcement 27.
Brief description operation of the present invention.
The horizontal dust collector turn-on power, dock with circular air inlet 4 sealings of preposition filter cartridge 1 gas outlet of dust catcher body internal cyclone separators (not shown), the gas that has separated the foreign substances such as dust enters built-in filter paper 9 and has in the filtration cartridge 1 of structure of the present invention through air inlet 4, the fine dust particle is trapped on the filter paper 9, and the clean gas after filtering, under the effect of dust sucting motor negative-pressure sucking, 2 air discharge grille 8 is discharged at the bottom of the filter cartridge.
In order at any time the fine dust on the filter paper 9 to be disposed, in the space between preposition filter cartridge 1 and the motor (not shown), be provided with 24V, 20W stepper motor (not shown), motor shaft drives power transmission pole 10 and driving bevel gear 11a rotates simultaneously, rotate counterclockwise with driven bevel pinion 11b and the upper screw rod 12a of driving bevel gear 11a engagement, lower screw rod 12b clockwise rotates, because the thread rotary orientation of upper and lower screw rod 12a, 12b is opposite, the screw thread of upper screw rod 12a is left-handed, the screw thread dextrorotation of lower screw rod 12b.
Again since the rotary joint 19 at brush stroke 13 two ends be formed with respectively with the spin slot 20 of upper and lower screw rod 12a, the corresponding combination of 12b, therefore, brush stroke 13 transverse shifting between upper and lower screw rod 12a, 12b with bristle 26 is realized the cleaning of brushing to filter paper 9 one side gauffers;
The slide groove 21 of 14 formation of 2 external slideway framves at the bottom of the box is interior vertically run through have limiting block 22, the vibrating arm 17 of the end face permanent magnet 15b of magnetic suction head 23 and most elastic plectrums 16.
Because, being equipped with permanent magnet 15a in the bottom surface, termination of brush stroke 13 two ends rotary joints 19, permanent magnet 15a inhales mutually with the mutual N of end face permanent magnet 15b, the S utmost point of magnetic suction head 23, becomes the power that vibrating arm 17 follows brush stroke 13 synchronous cross to move.
The slide groove 21 of 14 formation of 2 external slideway framves guarantees that vibrating arm 17 follows brush stroke 13 synchronous cross to move and do not come off at the bottom of the box.
Vibrating arm 17 is along slide groove 21 transverse shifting the time, most elastic plectrums 16 run into constantly that the obstruction of 2 air discharge grilles, 8 frames causes the distortion of elastic plectrum 16 free-end elastic displacements at the bottom of the filter cartridge on the vibrating arm 17, cross the 16 free-end elastic recovery resiliences of the later elastic plectrum of air discharge grille 8 frames, with the dust on these continuous elasticity beating filter paper 9 another sides.
Because what drive power transmission pole 10 is the automatic reverse electric rotating machine, when brush stroke 13 moves to upper and lower screw rod 12a, the 12b other end and can not continue when mobile, it is excessive that motor is experienced moment, voluntarily counter-rotating, upper and lower screw rod 12a, 12b counter-rotate simultaneously, brush stroke 13 and oppositely mobile by the drive link 10 of its magnetically-actuated is realized filter paper 9 two sides are shaken and grooming repeatedly with this.Reach the purpose of the two-sided automatically cleaning interlock of filter cartridge cleaning.

Claims (8)

1. the two-sided automatically cleaning linkage structure of the filter cartridge of a dust catcher, comprise that top is formed with the lid of air inlet (4) (5), be interlocked with lid (5) and box at the bottom of (2) be formed with the rectangle box body (1) of air discharge grille (8), and the filter paper (9) of the shape of turning back continuously in the box body (1), it is characterized in that: the power transmission pole (10) and driving bevel gear (11a) the driven transmission bevel gear (11b) and upper that arrange in the box body (1), lower screw rod (12a), (12b) rotate, drive the brush stroke (13) with permanent magnet (15a) and move back and forth in filter paper (9) front; The slide groove (21) that forms in (2) external slideway frame (14) at the bottom of the box is inner, is provided with the vibrating arm (17) with permanent magnet (15b) and a majority elastic plectrum (16) and synchronous interaction that the upper permanent magnet (15a) of brush stroke (13) drives.
2. the two-sided automatically cleaning linkage structure of the filter cartridge of described dust catcher according to claim 1, it is characterized in that: power transmission pole (10) is arranged on a side in the box body (1), and two ends driving bevel gear (11a) in opposite directions respectively with the engagement of the driven bevel pinion (11b) of upper and lower screw rod (12a), (12b) end, power transmission pole (10) one ends and box be automatic reverse electric rotating machine coaxial rotation outward.
3. the two-sided automatically cleaning linkage structure of the filter cartridge of described dust catcher according to claim 1, it is characterized in that: upper and lower screw rod (12a), (12b) are separately positioned on the interior upper and lower of box body (1), upper and lower screw rod (12a), (12b) are parallel to each other, and number of threads, spacing are identical, and thread rotary orientation is opposite.
4. the two-sided automatically cleaning linkage structure of the filter cartridge of described dust catcher according to claim 1, it is characterized in that: brush stroke (13) two ends form respectively the rotary joint (19) with arc-shaped recess section (18), and rotary joint (19) be formed with respectively with the spin slot (20) of upper and lower screw rod (12a), (12b) corresponding combination, rotary joint (19) the bottom surface, termination be equipped with permanent magnet (15a).
5. the two-sided automatically cleaning linkage structure of the filter cartridge of described dust catcher according to claim 1, it is characterized in that: slideway shelf (14) is formed on (2) outer upper and lower side at the bottom of the box in opposite directions, runs through the two ends limited location in the slide groove (21) that forms between (2) at the bottom of slideway shelf (14) and the box and keeps off (22) spacing vibrating arm (17).
6. it is characterized in that according to claim 1 or the two-sided automatically cleaning linkage structure of the filter cartridge of 4 described dust catchers: the upper permanent magnet (15b) of synchronization-moving vibrating arm (17) is formed on the end face with the corresponding in opposite directions side magnetic suction head (23) of brush stroke (13) rotary joint (19) bottom surface permanent magnet (15a).
7. it is characterized in that according to claim 1 or the two-sided automatically cleaning linkage structure of the filter cartridge of 4 described dust catchers: most elastic plectrums (16) be arranged at a certain distance with brush stroke (13) vibrating arm (17) one sides in opposite directions on.
8. the two-sided automatically cleaning linkage structure of the filter cartridge of described dust catcher according to claim 7, it is characterized in that: elastic plectrum (16) is the affixed plastic sheet of free end (24) that is combined in vibrating arm (17) one side upper springs (25).
CN 201110225761 2011-08-08 2011-08-08 Double-side self-cleaning linkage structure for filter cartridge of dust collector Pending CN102920395A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201110225761 CN102920395A (en) 2011-08-08 2011-08-08 Double-side self-cleaning linkage structure for filter cartridge of dust collector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201110225761 CN102920395A (en) 2011-08-08 2011-08-08 Double-side self-cleaning linkage structure for filter cartridge of dust collector

Publications (1)

Publication Number Publication Date
CN102920395A true CN102920395A (en) 2013-02-13

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Family Applications (1)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016090924A1 (en) * 2014-12-12 2016-06-16 江苏美的清洁电器股份有限公司 Device for beating dust and dust collector using same
CN105708390A (en) * 2016-04-29 2016-06-29 张道翔 Cleaner with self-cleaning type structure
WO2016183863A1 (en) * 2015-05-19 2016-11-24 江苏美的清洁电器股份有限公司 Filtering assembly used for dust cleaner and dust cleaner having same
CN106731326A (en) * 2016-12-01 2017-05-31 安徽中研理工仪器设备有限公司 A kind of air cleaner with cleaning device
CN107676827A (en) * 2017-10-10 2018-02-09 无锡市南长实验中学 A kind of Household induction cooker
CN108634868A (en) * 2018-08-06 2018-10-12 无锡市稀土永磁厂 Dust catcher constriction head with permanent magnet apparatus for recovering metal
CN112403106A (en) * 2020-12-01 2021-02-26 岳阳佰胜智慧环保科技有限公司 V-shaped groove deep dust suction cleaner of plate filter not easy to deform
CN112789096A (en) * 2019-09-11 2021-05-11 株式会社Lg化学 Apparatus and method for cleaning metal filters
CN114145680A (en) * 2021-11-25 2022-03-08 广东浩海环保设备有限公司 Anti-blocking device inside sweeper and operation method

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016090924A1 (en) * 2014-12-12 2016-06-16 江苏美的清洁电器股份有限公司 Device for beating dust and dust collector using same
US10327613B2 (en) 2015-05-19 2019-06-25 Jiangsu Media Cleaning Appliances Co., Ltd. Filteration assembly for vacuum cleaner and vacuum cleaner having same
WO2016183863A1 (en) * 2015-05-19 2016-11-24 江苏美的清洁电器股份有限公司 Filtering assembly used for dust cleaner and dust cleaner having same
CN105708390A (en) * 2016-04-29 2016-06-29 张道翔 Cleaner with self-cleaning type structure
CN105708390B (en) * 2016-04-29 2018-05-29 张道翔 Cleaner with self-cleaning type structure
CN106731326A (en) * 2016-12-01 2017-05-31 安徽中研理工仪器设备有限公司 A kind of air cleaner with cleaning device
CN107676827A (en) * 2017-10-10 2018-02-09 无锡市南长实验中学 A kind of Household induction cooker
CN108634868A (en) * 2018-08-06 2018-10-12 无锡市稀土永磁厂 Dust catcher constriction head with permanent magnet apparatus for recovering metal
CN112789096A (en) * 2019-09-11 2021-05-11 株式会社Lg化学 Apparatus and method for cleaning metal filters
CN112789096B (en) * 2019-09-11 2022-08-19 株式会社Lg化学 Apparatus and method for cleaning metal filters
US12064720B2 (en) 2019-09-11 2024-08-20 Lg Chem, Ltd. Apparatus and method for cleaning metal filter
CN112403106A (en) * 2020-12-01 2021-02-26 岳阳佰胜智慧环保科技有限公司 V-shaped groove deep dust suction cleaner of plate filter not easy to deform
CN114145680A (en) * 2021-11-25 2022-03-08 广东浩海环保设备有限公司 Anti-blocking device inside sweeper and operation method

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Application publication date: 20130213