CN106691306A - Vertical type dust absorbing device - Google Patents

Vertical type dust absorbing device Download PDF

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Publication number
CN106691306A
CN106691306A CN201710009757.0A CN201710009757A CN106691306A CN 106691306 A CN106691306 A CN 106691306A CN 201710009757 A CN201710009757 A CN 201710009757A CN 106691306 A CN106691306 A CN 106691306A
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CN
China
Prior art keywords
sliding block
sub
cylinder barrel
annular cylinder
induction installation
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Granted
Application number
CN201710009757.0A
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Chinese (zh)
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CN106691306B (en
Inventor
王海生
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王海生
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Priority to CN201710009757.0A priority Critical patent/CN106691306B/en
Publication of CN106691306A publication Critical patent/CN106691306A/en
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Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04FPUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F3/00Pumps using negative pressure acting directly on the liquid to be pumped

Abstract

The invention provides a vertical type dust absorbing device. The vertical type dust absorbing device comprises a housing, the inside of the housing is provided with an upper filtering unit and a lower absorbing force generating device, wherein the absorbing force generating device comprises at least one absorbing force generating unit; the absorbing force generating unit is composed of a motor, an annular cylinder barrel, a rotating arm and a magnetic slider, wherein the magnetic slider is arranged inside the annular cylinder barrel and adhered to the inner wall of the annular cylinder barrel, the rotating arm is connected with the output shaft of the motor, the tail end of the rotating arm is connected with a magnetic absorbing device, which is in contact with the annular cylinder barrel and absorbs the magnetic slider in a non-contact mode, so that the magnetic slider can mode inside the annular cylinder barrel; a sub absorbing port, a sub exhaust port and a notch formed between the sub absorbing port and the sub exhaust port are formed in the annular cylinder barrel; when the magnetic slider moves inside the annular cylinder barrel, gas can be absorbed in through the sub absorbing port and exhausted from the sub exhaust port.

Description

A kind of vertical dust exhaust apparatus
Technical field
The present invention relates to a kind of dust catcher, more particularly to a kind of vertical dust exhaust apparatus, substantially tubular, for dust suction.
Background technology
The dust catcher of traditional vertical type dust collector, especially cartridge type, mostly using the rotation of motor belt motor movable vane piece, produces negative Pressure, so as to reach the purpose of dust suction.However, often producing larger noise using the dust catcher of vane type.At present, for reduction is made an uproar Sound has been made some trials, for example, placing silencer mechanism in dust catcher, or blade is made improvements, and has certain effect Really, but do not solve the above problems fundamentally.Shock is produced with blade because foreign matter enters in dust catcher, not only influence makes With the life-span and abnormal sound can be produced.Therefore.Needs are changed from the structure of dust catcher, reduce the noise of dust catcher.
The content of the invention
It is an object of the invention to provide a kind of dust catcher, the noise produced when dust suction works can be reduced.
The present invention is achieved through the following technical solutions above-mentioned purpose, and the present invention provides a kind of vertical dust exhaust apparatus, described Vertical dust exhaust apparatus includes housing, superposed filtration fraction is provided with the housing and the suction positioned at bottom produces dress Put, the filtration fraction is made up of outer wall and filter screen, and the outer wall is not contacted with filter screen, the outer wall is provided with one to be used for The total air-breathing mouthful of the suction generating device is connected, the suction generating device includes at least one suction generation unit, wherein, The suction generation unit includes motor, annular cylinder barrel, pivoted arm and magnetic slider, and the magnetic slider is located at the annular cylinder barrel Interior and fitted with the inwall of annular cylinder barrel, the pivoted arm is connected to the output shaft of the motor, and the pivoted arm end is attached with Magnetic force adsorption apparatus, the magnetic force adsorption apparatus are contacted with annular cylinder barrel, and non-contactly adsorb the magnetic slider, are made described Magnetic slider is moved in the annular cylinder barrel, and the annular cylinder barrel is provided with sub- air entry, sub- exhaust outlet and positioned at son Otch between air entry and sub- exhaust outlet, the magnetic slider is moved in the annular cylinder barrel so that gas is from sub- air-breathing Mouth is inhaled into, and is discharged from sub- exhaust outlet.
According to a preferred embodiment of the invention, the suction generation unit also includes the first induction installation and second Induction installation, when the magnetic slider is reached at the first induction installation, the first induction installation correspondingly sends control signal, control System switch valve events, open the otch, and the movable along direction of the magnetic slider continues to move to, when the magnetic slider Reach at the second induction installation, the second induction installation correspondingly sends control signal, controlling switch valve events, close described in cut Mouthful so that gas is inhaled into annular cylinder barrel via sub- air entry.
According to a preferred embodiment of the invention, the sub- air entry is located at the incision, and the sub- suction The circumferential lengths of the distance between gas port and described second induction installation equal to the magnetic slider.
Preferably, it is provided with a check valve at the sub- air entry so that gas can only uniaxially enter into annular cylinder barrel It is interior, and the gas in annular cylinder barrel can not be escaped by air entry.
According to a preferred embodiment of the invention, the two ends of the magnetic slider are provided with sealing ring, the sealing ring It is made up of flexible compressible material.
According to a preferred embodiment of the invention, the suction generating device includes multiple suction generation units, and The otch of each suction generation unit and sub- air entry in the vertical direction are in staggered distribution.
According to a preferred embodiment of the invention, magnet and/or filter screen are provided with the total air-breathing mouth.
According to a preferred embodiment of the invention, the vertical dust exhaust apparatus also includes the repeatable electric power storage charged Pond.
Another preferred embodiment of the invention, is disposed with the first sliding block and second and slides in the annular cylinder barrel Block, and the distance between the first induction installation and the second induction installation are exactly equal to the circumferential lengths of the first sliding block and the second sliding block Sum, in original position, second sliding block is resisted against the rear end face of first sliding block, and second sliding block is consolidated by electromagnet It is set to for blocking the otch, first sliding block rotates under the magneticaction of magnetic force adsorption apparatus so that gas is by son It is inhaled at air entry, when first sliding block is rotated to up at first induction installation, the first induction installation hair Go out control signal, the fixing force of electromagnet dead electricity, the second sliding block is disappeared, the second sliding block described in first slipper push is moved Dynamic, when first sliding block moves to the original position of the second sliding block, the second sliding block reaches the second induction installation position just Place, second induction installation sends control signal, obtains electromagnet electric, and first sliding block is fixed on into the closure otch At position, the magnetic force adsorption apparatus on pivoted arm drive second sliding block to continue to rotate so that gas is inhaled by sub- air entry Enter.
The beneficial effects of the invention are as follows:The vertical dust exhaust apparatus of the present invention utilizes mobile product of the magnetic slider in annular cylinder barrel Raw negative pressure, and then produce suction, reduce noise when traditional vane type dust catcher works, and relative to moving up and down Piston dust cleaner improves operating efficiency.
Brief description of the drawings
Fig. 1 is the structural representation of traditional vane type dust catcher;
Fig. 2 is the simplified diagram of the vertical dust exhaust apparatus according to one embodiment of the invention;
Fig. 3 is the sectional view of the vertical dust exhaust apparatus of Fig. 2;
Fig. 4 is the structure chart of the suction generating device of the vertical dust exhaust apparatus of one embodiment of the invention;
In figure:1- housings;2- air inlet pipe;3- filtration fractions;31- outer walls;32- filter screens;33- total air-breathings mouthful;4- suction produces dress Put;41- motors;42- annular cylinder barrels;43- pivoted arms;44- magnetic sliders;45- switch valves;The induction installations of 46- first;47- second Induction installation;48- magnetic absorption devices.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made Embodiment, belongs to the scope of protection of the invention.
Hereinafter use " on ", " top ", D score and " bottom " etc. represent the word in orientation, be for convenience, Unless otherwise indicated, it does not constitute the limitation to protection scope of the present invention.
It should be understood that " distance " described below is unless otherwise indicated, the edge between the object or object and object that refer to The arc length of arc direction on circumference.
Fig. 1 is the structural representation of traditional vertical type dust collector, including suction port, motor, blade, Rose Box, collection Ash bin etc., motor belt motor movable vane piece rotation, produces negative pressure, and dust and foreign matter are sucked from suction port, discharges after filtering.This biography Although the vertical type dust collector simple structure of system, the noise that blade rotation is produced is larger.
Fig. 2 and Fig. 3 show the vertical dust exhaust apparatus of an embodiment of the invention.As shown in Figures 2 and 3, The vertical dust exhaust apparatus includes shell of the dust collector 1, and shell of the dust collector is provided with suction port 11 and total exhaust outlet 12, the dust suction Mouth 11 is connected with air inlet pipe 2, wherein being provided with superposed filtration fraction 3 and the suction positioned at bottom in the shell of the dust collector Force generating apparatus 4, the filtration fraction is made up of outer wall 31 and filter screen 32, and the outer wall is not contacted with filter screen, the outer wall A total air-breathing for connecting the suction generating device mouthful 33 is provided with, the suction generating device includes that at least one inhales Power generation unit.The structural representation of the suction generating device is shown in Fig. 4, as shown in figure 4, the suction generation unit Including motor 41, annular cylinder barrel 42, pivoted arm 43 and magnetic slider 44, the magnetic slider is located in the annular cylinder barrel and and ring The inwall laminating of shape cylinder barrel, the pivoted arm is connected to the output shaft of the motor, and the pivoted arm end is attached with magnetic-adsorption Device 48, the magnetic force adsorption apparatus are contacted with annular cylinder barrel, and non-contactly adsorb the magnetic slider, slide the magnetic Block is moved in the annular cylinder barrel.The annular cylinder barrel is provided with sub- air entry, sub- exhaust outlet and positioned at sub- air entry and son Otch between exhaust outlet, the magnetic slider is moved in the annular cylinder barrel so that gas is inhaled into from sub- air entry, from Sub- exhaust outlet is discharged.
Suction generating device of the invention is described in detail referring to Fig. 4.Specifically, with a suction generation unit As a example by describe.When the magnetic slider 44 is reached at the first induction installation 46, the first induction installation 46 correspondingly sends control Signal, controlling switch valve 45 is acted, and opens the otch, and the magnetic slider 44 is continued in annular cylinder barrel by the otch Mobile, then magnetic slider 44 is reached at the second induction installation 47, and the second induction installation 47 correspondingly sends control signal, control Switch valve 45 is acted, and closes the otch, and pivoted arm 43 continues to drive magnetic slider 44 by the magnetic absorption device 48 of its end Rotation, with the movement of magnetic slider, the space between magnetic slider and the otch gradually increases, in this way, gas warp It is inhaled into annular cylinder barrel by sub- air entry, produces suction.
Preferably, the sub- air entry is in the incision, it is highly preferred that second induction installation 47 and the son The distance between air entry(That is arc length)Equal to the circumferential lengths of magnetic slider 44.The sub- air entry is located at described second Between induction installation 47 and the otch, near the otch.When between second induction installation and the sub- air entry When distance is equal to the circumferential lengths of magnetic slider, second induction installation 47 senses the arrival of the magnetic slider and sends control Signal processed, makes the otch be switched on and off valve 45 and closes, while the sub- air entry is opened just, with the continuation of magnetic slider Mobile, gas is quickly filled with annular cylinder barrel via sub- air entry, thus produces bigger suction.
It should be understood that word " magnetic slider " be intended to description its can by magnetic absorption the characteristics of, and be not meant to by only its from Body is defined to be a magnet, and mentioned magnetic slider permanent magnet property, or can be made up of metal material, Can also be that magnetic material is internal or external in the slide block structure.In addition, the annular cylinder barrel can be by any non magnetic Material is made, for example glass, plastics, stainless steel etc..It should also be understood that the otch can be shaped as at least makes the annular cylinder A part for cylinder is continuous, to ensure that the magnetic slider can be maintained in the annular cylinder barrel, without departing from its shifting Dynamic rail mark;In addition, the otch can also be shaped as cuts completely through the annular cylinder barrel, but otch answers sufficiently small to ensure Stating magnetic slider can be maintained in the annular cylinder barrel, without departing from its motion track.
It is to be appreciated that the cross sectional shape of the annular cylinder barrel can be circle, rectangle etc., and the annular cylinder barrel is inside and outside The cross sectional shape of wall can be adapted with difference, the magnetic slider with the inner wall shape of the annular cylinder barrel.
Preferably, it is provided with a check valve at above-mentioned sub- air entry so that gas can only uniaxially enter into annular cylinder barrel It is interior, and the gas in annular cylinder barrel can not be escaped by air entry.
Preferably, the magnetic absorption device is adapted to the shape of the outer wall of the annular cylinder barrel, with the annular cylinder The outer wall of cylinder fits.
It is further preferred that the two ends of the magnetic slider are provided with sealing ring, the sealing ring is made up of flexible compressible material, To ensure not existing gap between the magnetic slider and the inwall of the annular cylinder barrel.
Alternatively, the otch can be the wedge mouthful that section is V-arrangement, and the switch valve is spheroid, the wedge mouthful with the V-arrangement Constitute a ball valve.The otch can also be rectangle or other shapes that can be blocked.
Alternatively, the magnetic slider can be rotated clockwise, can be with counterclockwise rotates.
In addition, the number of above-mentioned suction generation unit can be multiple, multiple suction units can be disposed in same Layer, it is also possible to be disposed in different layers, it is preferable that make the otch of each suction generation unit and sub- air entry in the vertical direction It is in staggered distribution so that have suction generation unit producing suction at any time.Many sub- air entries by pipeline with it is described Total air-breathing mouthful connection, so that dust or foreign matter are inhaled into the filtration fraction of dust catcher into carrying out filtration treatment in filter screen. Also include dust collecting box in the filtration fraction, dust and foreign matter for collecting filtering.
Preferably, be provided with magnet at the total air-breathing mouth, it is also possible to be provided with filter screen, for adsorb and interception be intended to enter The foreign matter of total air-breathing mouthful, such as iron powder etc., prevent iron powder or other foreign matters from entering into annular cylinder barrel, hinder the shifting of magnetic slider It is dynamic.
Preferably, the vertical dust exhaust apparatus also includes the repeatable battery for charging, used as its stand-by power supply, the storage Battery can be that control circuit and control element in motor, vertical dust exhaust apparatus etc. provide power supply so that vertical dust exhaust apparatus Can be worked in the case of the power supply that is not directly connected.
Preferably, roller is provided with the bottom of the vertical dust exhaust apparatus, is easy to it to move around on the ground.
Another embodiment of the invention, the suction generation unit can also be implemented in the following manner.With The difference of the first embodiment is that two magnetic sliders are disposed with the annular cylinder barrel, for convenience of description, is claimed respectively Make the first sliding block and the second sliding block.Preferably, the distance between the first induction installation and the second induction installation are exactly equal to first The circumferential lengths sum of sliding block and the second sliding block, and the otch and the sub- air entry are located at the described first and second sensing dresses Between putting, the sub- exhaust outlet is omitted.
Specifically, in original position, second sliding block is resisted against the rear end face of first sliding block, second sliding block It is fixed at incision site by electromagnet, blocks the portions cut of sub- air entry side, first sliding block is filled in magnetic-adsorption Rotated under the magneticaction put, now, sub- air entry is opened, form negative between first sliding block and second sliding block Pressure, produces suction, passes the gas through during the sub- air entry quickly enters annular cylinder barrel;When first sliding block is rotated to up to institute State when at the first induction installation, first induction installation sends control signal, make electromagnet dead electricity, the fixing force of the second sliding block Disappear, the second sliding block movement described in first slipper push, when first sliding block moves to the original position of the second sliding block When, the second sliding block is reached at the second induction installation position just, and second induction installation sends control signal, obtains electromagnet Electricity, the incision is fixed on by first sliding block, and now, first sliding block blocks sub- air entry by electromagnetism ferropexy The portions cut of side, and pivoted arm drives magnetic force adsorption apparatus to depart from the first sliding block continuation rotation, the magnetic force is inhaled afterwards Adsorption device is attached with second sliding block, drives second sliding block to continue to rotate, and opens the sub- air entry, continues to produce suction Power, its principle is identical when being worked with the first sliding block.In the above described manner, move in circles so that constantly produce suction.
It should be understood that suction of the absorption affinity of the electromagnet more than the magnetic absorption device, to ensure that sliding block can be by It is in position.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be in other specific forms realized.Therefore, no matter From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power Profit requires to be limited rather than described above, it is intended that all in the implication and scope of the equivalency of claim by falling Change is included in the present invention.Any reference in claim should not be considered as the claim involved by limitation.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each implementation method is only wrapped Containing an independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art should Specification an as entirety, the technical scheme in each embodiment can also be formed into those skilled in the art through appropriately combined May be appreciated other embodiment.

Claims (9)

1. a kind of vertical dust exhaust apparatus, the vertical dust exhaust apparatus includes housing, and superposed mistake is provided with the housing Partly and positioned at the suction generating device of bottom, the filtration fraction is made up of outer wall and filter screen, and the outer wall and filter screen for filter Do not contact, the outer wall is provided with a total air-breathing for connecting the suction generating device mouthful, the suction generating device Including at least one suction generation unit, it is characterised in that the suction generation unit include motor, annular cylinder barrel, pivoted arm and Magnetic slider, the magnetic slider is located in the annular cylinder barrel and is fitted with the inwall of annular cylinder barrel, and the pivoted arm is connected to The output shaft of the motor, and the pivoted arm end is attached with magnetic force adsorption apparatus, the magnetic force adsorption apparatus and annular cylinder barrel Contact, and the magnetic slider is non-contactly adsorbed, the magnetic slider is moved in the annular cylinder barrel, and the ring Shape cylinder barrel is provided with sub- air entry, sub- exhaust outlet and the otch between sub- air entry and sub- exhaust outlet, the magnetic slider Moved in the annular cylinder barrel so that gas is inhaled into from sub- air entry, be discharged from sub- exhaust outlet.
2. vertical dust exhaust apparatus according to claim 1, it is characterised in that the suction generation unit also includes the first sense Device and the second induction installation are answered, when the magnetic slider is reached at the first induction installation, the first induction installation is correspondingly sent out Go out control signal, controlling switch valve events open the otch, and the movable along direction of the magnetic slider continues to move to, When the magnetic slider is reached at the second induction installation, the second induction installation correspondingly sends control signal, controlling switch valve actuation Make, close the otch so that gas is inhaled into annular cylinder barrel via sub- air entry.
3. vertical dust exhaust apparatus according to claim 2, it is characterised in that it is attached that the sub- air entry is located at the otch Closely, and the distance between the sub- air entry and second induction installation equal to the magnetic slider circumferential lengths.
4. according to the vertical dust exhaust apparatus that any one of claim 1-3 is described, it is characterised in that set at the sub- air entry There is a check valve so that gas can only be entered into uniaxially in annular cylinder barrel, and the gas in annular cylinder barrel can not be by inhaling Gas port is escaped.
5. according to the vertical dust exhaust apparatus that any one of claim 1-3 is described, it is characterised in that the two of the magnetic slider End is provided with sealing ring, and the sealing ring is made up of flexible compressible material.
6. according to the vertical dust exhaust apparatus that any one of claim 1-3 is described, it is characterised in that the suction generating device It is in staggered distribution including multiple suction generation units, and the otch of each suction generation unit and sub- air entry in the vertical direction.
7. according to the vertical dust exhaust apparatus that any one of claim 1-3 is described, it is characterised in that at the total air-breathing mouth It is provided with magnet and/or filter screen.
8. according to the vertical dust exhaust apparatus that any one of claim 1-3 is described, it is characterised in that the vertical dust exhaust apparatus Also include the repeatable battery for charging.
9. vertical dust exhaust apparatus according to claim 1, it is characterised in that be disposed with the first sliding block in the annular cylinder barrel With the second sliding block, and the distance between the first induction installation and the second induction installation are exactly equal to the first sliding block and the second sliding block Circumferential lengths sum, in original position, second sliding block is resisted against the rear end face of first sliding block, the second sliding block quilt Electromagnet is fixed as occluding member otch, and first sliding block rotates under the magneticaction of magnetic force adsorption apparatus so that Gas is inhaled into by sub- air entry, when first sliding block is rotated to up at first induction installation, first sense Answer device to send control signal, the fixing force of electromagnet dead electricity, the second sliding block is disappeared, second described in first slipper push Sliding block is moved, and when first sliding block moves to the original position of the second sliding block, the second sliding block reaches the second sensing dress just At seated position, second induction installation sends control signal, obtains electromagnet electric, and first sliding block is fixed on into closure part Divide at incision site, the magnetic force adsorption apparatus on pivoted arm drive second sliding block to continue to rotate so that gas is by sub- air entry Place is inhaled into.
CN201710009757.0A 2017-01-06 2017-01-06 A kind of vertical dust exhaust apparatus Active CN106691306B (en)

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CN201710009757.0A CN106691306B (en) 2017-01-06 2017-01-06 A kind of vertical dust exhaust apparatus

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CN106691306B CN106691306B (en) 2019-03-08

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Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4662314A (en) * 1985-09-25 1987-05-05 Mor-Flo Industries, Inc. Magnetic water conditioning device
CN2053260U (en) * 1989-08-14 1990-02-21 胡云 Compressor with ring body
JP2003278679A (en) * 2002-03-22 2003-10-02 Matsushita Electric Ind Co Ltd Rotary compressor
CN1767780A (en) * 2003-03-27 2006-05-03 尼尔森创新有限公司 Twin-motor independent vacuum cleaner
CN201162547Y (en) * 2008-03-21 2008-12-10 郎风 Annular gas cylinder generator
CN201190707Y (en) * 2008-04-10 2009-02-04 王利山 Cylinder with open magnetic loop
KR20100092128A (en) * 2009-02-12 2010-08-20 이병훈 Compressor
CN202250707U (en) * 2011-10-19 2012-05-30 吴建奎 Annular compressor
CN103182103A (en) * 2011-12-30 2013-07-03 上海理工大学 Electric breast pump
CN203627395U (en) * 2013-11-01 2014-06-04 宁波恒敏灵通气动成套有限公司 Rodless cylinder
CN104235015A (en) * 2014-09-04 2014-12-24 广东美芝制冷设备有限公司 Compressor

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4662314A (en) * 1985-09-25 1987-05-05 Mor-Flo Industries, Inc. Magnetic water conditioning device
CN2053260U (en) * 1989-08-14 1990-02-21 胡云 Compressor with ring body
JP2003278679A (en) * 2002-03-22 2003-10-02 Matsushita Electric Ind Co Ltd Rotary compressor
CN1767780A (en) * 2003-03-27 2006-05-03 尼尔森创新有限公司 Twin-motor independent vacuum cleaner
CN201162547Y (en) * 2008-03-21 2008-12-10 郎风 Annular gas cylinder generator
CN201190707Y (en) * 2008-04-10 2009-02-04 王利山 Cylinder with open magnetic loop
KR20100092128A (en) * 2009-02-12 2010-08-20 이병훈 Compressor
CN202250707U (en) * 2011-10-19 2012-05-30 吴建奎 Annular compressor
CN103182103A (en) * 2011-12-30 2013-07-03 上海理工大学 Electric breast pump
CN203627395U (en) * 2013-11-01 2014-06-04 宁波恒敏灵通气动成套有限公司 Rodless cylinder
CN104235015A (en) * 2014-09-04 2014-12-24 广东美芝制冷设备有限公司 Compressor

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