CN106272086A - A kind of Magnetorheologicai polishing liquid withdrawer - Google Patents
A kind of Magnetorheologicai polishing liquid withdrawer Download PDFInfo
- Publication number
- CN106272086A CN106272086A CN201610833949.9A CN201610833949A CN106272086A CN 106272086 A CN106272086 A CN 106272086A CN 201610833949 A CN201610833949 A CN 201610833949A CN 106272086 A CN106272086 A CN 106272086A
- Authority
- CN
- China
- Prior art keywords
- cover
- polishing liquid
- permanent magnet
- withdrawer
- magnetorheologicai
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B57/00—Devices for feeding, applying, grading or recovering grinding, polishing or lapping agents
- B24B57/02—Devices for feeding, applying, grading or recovering grinding, polishing or lapping agents for feeding of fluid, sprayed, pulverised, or liquefied grinding, polishing or lapping agents
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The invention discloses a kind of Magnetorheologicai polishing liquid withdrawer, including reclaiming cover, catheter, permanent magnet and screen layer.Reclaim cover for collecting the magnetic flow liquid sent here by buff wheel, catheter penetrates and reclaims cover for siphoning away the magnetic flow liquid being collected in recovery cover, permanent magnet is arranged between recovery cover and magnetorheological polishing wheel and forms magnetic brush, screen layer is wrapped in around permanent magnet for confining magnetic field sphere of action, weakens magnetic field intensity, it is to avoid Magnetorheologicai polishing liquid is hardening causes abrasion to described magnetorheological polishing wheel.
Description
Technical field
The invention belongs to optical element Ultra-precision Turning field, be specifically related to a kind of Magnetorheologicai polishing liquid withdrawer.
Background technology
MRF is a kind of important optical element Ultra-precision Turning means, has working (machining) efficiency surface high, sub-and damages
Hinder little advantage.It is complete that Chinese patent literature storehouse discloses the patent of invention CN 101323097A mono-kind of the National University of Defense technology
MRF machine tool and buff wheel scheme, this MRF lathe can be used for processing the optical element of super large caliber；
The polishing fluid blood circulation of MRF lathe is carried out by the later application patent CN 101249637A of the National University of Defense technology
Improving, polishing fluid blood circulation have employed the retracting device of a kind of inner hollow, is disposed with ring on the erection seat of retracting device
, there is gap between this retracting device and drum sander in the permanent magnet of shape, it is difficult to completely reclaims polishing fluid；Meanwhile, permanent magnet
Can be hardened Magnetorheologicai polishing liquid in the magnetic field formed, thus the abrasion that aggravation is to magnetorheological polishing wheel.
Need improvement Magnetorheologicai polishing liquid withdrawer at present badly, reduce the abrasion to magnetorheological polishing wheel.
Summary of the invention
Present invention technical problem to be solved is to provide a kind of Magnetorheologicai polishing liquid withdrawer.
The Magnetorheologicai polishing liquid withdrawer of the present invention, is characterized in: include reclaiming cover, catheter, permanent magnet and screen layer,
Described recovery cover is cylindrical, and cylindrical top is upper surface, and cylindrical bottom is lower surface, and lower surface has one side
Cavity and draining hole；Described catheter is the conduit of hollow, catheter extend vertically through reclaim cover upper surface, with lower surface it
Between leave gap；The described lower surface reclaiming cover is the curved surface that the magnetorheological polishing wheel with drum type fits, the shape of curved surface
For the curved surface passed through with magnetorheological polishing wheel drum type radius R1 and magnetorheological polishing wheel radius of gyration R2 phase；Described reclaims under cover
End face has the circular groove I coaxial with reclaiming cover, is provided with the screen layer of form fit, screen layer in circular groove I
In have the circular groove II coaxial with reclaiming cover, circular groove II is placed with the permanent magnet of form fit, permanent magnet
Fitting with magnetorheological polishing wheel with the surface of screen layer, the magnetizing direction of permanent magnet is parallel with the axis reclaiming cover；Described
The opening of one side cavity, in face of the Magnetorheologicai polishing liquid being attached to MRF wheel surface after use, is made in external magnetic field
Under with, Magnetorheologicai polishing liquid forms MRF ribbon；The center of described draining hole and MRF ribbon
Center overlaps.
Described draining hole is sector open, and opening angle scope is 90 ° ~ 180 °, and open height is more than MRF
The thickness of ribbon, less than the described thickness reclaiming cover.
Described polymeric barrier layer materials is permeability magnetic material.
Described Magnetorheologicai polishing liquid withdrawer is arranged on directly over magnetorheological polishing wheel, in diagonally forward or rear ramp
One position.
The cover that reclaims in the Magnetorheologicai polishing liquid withdrawer of the present invention is used for collecting the magnetic current sent here by magnetorheological polishing wheel
Becoming polishing fluid, catheter is collected in, for siphoning away, the Magnetorheologicai polishing liquid reclaimed in cover, and permanent magnet is arranged on recovery cover and magnetic current
Becoming and form magnetic brush between buff wheel, screen layer is wrapped in around permanent magnet for confining magnetic field sphere of action, weakens magnetic field
Intensity, it is to avoid cause Magnetorheologicai polishing liquid hardening that described magnetorheological polishing wheel is caused abrasion due to the action of a magnetic field.
The Magnetorheologicai polishing liquid withdrawer of the present invention can be fitted completely with magnetorheological polishing wheel, reduces MRF
Gap between liquid withdrawer and magnetorheological polishing wheel, decreases the leakage of Magnetorheologicai polishing liquid；Magnetorheologicai polishing liquid withdrawer
The permanent magnet of middle installation and screen layer can confining magnetic field sphere of action, weaken magnetic field intensity, form suitable magnetic field, at magnetic current
Become the magnetic brush formed between withdrawer and magnetorheological polishing wheel and further increase the organic efficiency of Magnetorheologicai polishing liquid, subtract
The light abrasion of buff wheel.
Accompanying drawing explanation
Fig. 1 is the Magnetorheologicai polishing liquid withdrawer structural representation of the present invention；
Fig. 2 is the magnetorheological polishing wheel schematic diagram that the Magnetorheologicai polishing liquid withdrawer with the present invention mates；
Fig. 3 is the recovery cover polycrystalline substance schematic diagram in the Magnetorheologicai polishing liquid withdrawer of the present invention；
Fig. 4 is the recovery cover opening schematic diagram in the Magnetorheologicai polishing liquid withdrawer of the present invention；
Fig. 5 is the recovery cover section A schematic diagram in the Magnetorheologicai polishing liquid withdrawer of the present invention；
Fig. 6 is the recovery cover cross section B schematic diagram in the Magnetorheologicai polishing liquid withdrawer of the present invention；
Fig. 7 be the present invention Magnetorheologicai polishing liquid withdrawer in partial enlarged drawing at the C after permanent magnet and screen layer is installed；
Fig. 8 is the installation site schematic diagram of the Magnetorheologicai polishing liquid withdrawer of the present invention.
In figure, 1. reclaim the cover 2. catheter 3. draining hole 4. magnetorheological throwings of permanent magnet 5. screen layer 6.
Lower surface 11., halo 7. MRF ribbon 8. one side cavity 9. upper surface 10. circular groove I 12.
Circular groove II.
Detailed description of the invention
The present invention is described in detail below in conjunction with the accompanying drawings with embodiment.
As shown in figures 1-8, the Magnetorheologicai polishing liquid withdrawer of the present invention includes reclaiming cover 1, catheter 2, permanent magnet 4 and screen
Covering layer 5, described recovery cover 1 is cylindrical, and cylindrical top is upper surface 9, and cylindrical bottom is lower surface 10, lower end
Face 10 has one side cavity 8 and draining hole 3；Described catheter 2 is the conduit of hollow, and catheter 2 extends vertically through and reclaims cover 1
Gap is left between upper surface 9, and lower surface 10；The described lower surface 10 reclaiming cover 1 is the magnetorheological polishing wheel 6 with drum type
The curved surface fitted, being shaped as and magnetorheological polishing wheel 6 drum type radius R1 and magnetorheological polishing wheel 6 radius of gyration R2 phase of curved surface
The curved surface passed through；The described lower surface 10 reclaiming cover 1 has the circular groove I 11 coaxial with reclaiming cover 1, circular groove I
The screen layer 5 of form fit is installed in 11, screen layer 5 has the circular groove II 12 coaxial with reclaiming cover 1, circular arc
Being placed with the permanent magnet 4 of form fit in groove II 12, the surface of permanent magnet 4 and screen layer 5 is affixed with magnetorheological polishing wheel 6
Closing, the magnetizing direction of permanent magnet 4 is parallel with the axis reclaiming cover 1；The opening of described one side cavity 8 in face of use after attached
The Magnetorheologicai polishing liquid on magnetorheological polishing wheel 6 surface, under outside the action of a magnetic field, Magnetorheologicai polishing liquid forms magnetorheological throwing
Light ribbon 7；The center of described draining hole 3 overlaps with the center of MRF ribbon 7.
Described draining hole 3 is sector open, and opening angle scope is 90 ° ~ 180 °, and open height is more than MRF
The thickness of ribbon 7, less than the described thickness reclaiming cover 1.
Described screen layer 5 material is permeability magnetic material.
Described Magnetorheologicai polishing liquid withdrawer is arranged on directly over magnetorheological polishing wheel 6, in diagonally forward or rear ramp
A position.
Embodiment 1
Magnetorheologicai polishing liquid withdrawer in the present embodiment includes reclaiming cover 1, catheter 2, permanent magnet 4 and screen layer 5, described
It is cylindrical for reclaiming cover 1, and material uses hard poly-record ethylene, and outside dimension is φ 74mm, high 38mm, and cylindrical top is upper end
Face 9, cylindrical bottom is lower surface 10, and lower surface 10 has one side cavity 8, and size diameter is φ 48mm, and the degree of depth is 18mm
With draining hole 3；Described catheter 2 be the conduit of hollow, material be 1Cr13, inner hollow diameter is φ mm10, and external diameter is φ
16mm.Catheter 2 extends vertically through the upper surface 9 reclaiming cover 1, and leaves gap between lower surface 10, and gap is 1 ~ 3mm；Described
Reclaim cover 1 lower surface 10 be the curved surface that the magnetorheological polishing wheel 6 with drum type fits, being shaped as and magnetorheological throwing of curved surface
The curved surface that halo 6 drum type radius 200mm passes through with magnetorheological polishing wheel 6 radius of gyration 400mm phase；The described lower end reclaiming cover 1
Face 10 has the circular groove I 11 coaxial with reclaiming cover 1, and the outside dimension of circular groove I 11 is φ 68mm, internal diameter chi
Very little for φ 52mm, the degree of depth is 12mm, is provided with the screen layer 5 of form fit, screen layer 5 material selection in circular groove I 11
The DT4 of magnetic conduction, outer surface carries out chromium plating process, has the circular groove II 12 coaxial with reclaiming cover 1, circular arc in screen layer 5
The outside dimension of connected in star II 12 is φ 64mm, and internal diameter size is φ 56mm, and the degree of depth is 10mm, places in circular groove II 12
There is the permanent magnet 4 of form fit, the material selection NdFeB52 of permanent magnet 4, the surface of permanent magnet 4 and screen layer 5 and magnetorheological throwing
Halo 6 fits, and the magnetizing direction of permanent magnet 4 is parallel with the axis reclaiming cover 1；The opening of described one side cavity 8 in face of
The Magnetorheologicai polishing liquid being attached to magnetorheological polishing wheel 6 surface after using, under outside the action of a magnetic field, Magnetorheologicai polishing liquid shape
Become MRF ribbon 7；The center of described draining hole 3 overlaps with the center of MRF ribbon 7.
Described draining hole 3 is sector open, and opening angle is 90 °, and open height is 4mm.
Described Magnetorheologicai polishing liquid withdrawer is arranged on magnetorheological polishing wheel 6 rear ramp.
Compared with cylindrical unshielded layers withdrawer, the response rate of the Magnetorheologicai polishing liquid withdrawer of the present invention reaches
90%, buff wheel life one times.
Embodiment 2
The present embodiment is essentially identical with the embodiment of embodiment 1, differs primarily in that, described recovery is covered 1 outside dimension and is
φ 64mm, high 38mm, one side cavity 8 size diameter is φ 38mm, the degree of depth be 18mm catheter 2 be that the conduit of hollow, material are
1Cr13, inner hollow diameter is φ mm8, and external diameter is φ 12mm.Magnetorheological polishing wheel 6 drum type radius 160mm and magnetorheological polishing wheel 6
The curved surface that radius of gyration 300mm phase is passed through；The outside dimension of circular groove I 11 is φ 58mm, and internal diameter size is φ 42mm, deeply
Degree is 12mm, the 2Cr13 of screen layer 5 material selection magnetic conduction, and the outside dimension of circular groove II 12 is φ 54mm, internal diameter size
For φ 46mm, the degree of depth is 10mm, is placed with the permanent magnet 4 of form fit, the material selection of permanent magnet 4 in circular groove II 12
NdFeB48。
Described draining hole 3 is sector open, and opening angle is 150 °.
Described Magnetorheologicai polishing liquid withdrawer is arranged on directly over magnetorheological polishing wheel 6.
Compared with cylindrical unshielded layers withdrawer, the response rate of the Magnetorheologicai polishing liquid withdrawer of the present invention reaches
90%, buff wheel life one times.
Embodiment 3
The present embodiment is essentially identical with the embodiment of embodiment 1, differs primarily in that, described recovery is covered 1 outside dimension and is
φ 44mm, high 32mm, one side cavity 8 size diameter is φ 20mm, the degree of depth be 15mm catheter 2 be that the conduit of hollow, material are
1Cr13, inner hollow diameter is φ mm6, and external diameter is φ 9mm.Magnetorheological polishing wheel 6 drum type radius 50mm and magnetorheological polishing wheel 6 times
Turn the curved surface that radius 200mm phase is passed through；The outside dimension of circular groove I 11 is φ 38mm, and internal diameter size is φ 22mm, the degree of depth
For 10mm, the 1Cr13 of screen layer 5 material selection magnetic conduction, the outside dimension of circular groove II 12 is φ 34mm, and internal diameter size is
φ 26mm, the degree of depth is 8mm, is placed with the permanent magnet 4 of form fit, the material selection of permanent magnet 4 in circular groove II 12
NdFeB38, described draining hole 3 is sector open, and opening angle is 180 °.
Described Magnetorheologicai polishing liquid withdrawer is arranged on magnetorheological polishing wheel 6 diagonally forward.
Compared with cylindrical unshielded layers withdrawer, the response rate of the Magnetorheologicai polishing liquid withdrawer of the present invention reaches
80%, buff wheel life one times.
The present invention is not limited to above-mentioned detailed description of the invention, person of ordinary skill in the field from above-mentioned design,
Without performing creative labour, all conversion made, within all falling within protection scope of the present invention.
Claims (4)
1. a Magnetorheologicai polishing liquid withdrawer, it is characterised in that: described withdrawer include reclaim cover (1), catheter (2),
Permanent magnet (4) and screen layer (5), described recovery cover (1) is cylindrical, and cylindrical top is upper surface (9), cylindrical
Bottom is lower surface (10), and lower surface (10) have one side cavity (8) and draining hole (3)；Described catheter (2) is hollow
Conduit, catheter (2) extends vertically through the upper surface (9) reclaiming cover (1), and leaves gap between lower surface (10)；Described returns
The lower surface (10) receiving cover (1) is the curved surface that the magnetorheological polishing wheel (6) with drum type fits, being shaped as with magnetorheological of curved surface
The curved surface that buff wheel (6) drum type radius R1 passes through with magnetorheological polishing wheel (6) radius of gyration R2 phase；Under described recovery cover (1)
End face (10) has the circular groove I (11) coaxial with reclaiming cover (1), is provided with form fit in circular groove I (11)
Screen layer (5), screen layer (5) has the circular groove II (12) coaxial with reclaiming cover (1), circular groove II (12)
In be placed with the permanent magnet (4) of form fit, the surface of permanent magnet (4) and screen layer (5) is affixed with magnetorheological polishing wheel (6)
Closing, the magnetizing direction of permanent magnet (4) is parallel with the axis reclaiming cover (1)；The opening of described one side cavity (8) is in face of use
After the Magnetorheologicai polishing liquid being attached to magnetorheological polishing wheel (6) surface, under outside the action of a magnetic field, Magnetorheologicai polishing liquid is formed
MRF ribbon (7)；The center of described draining hole (3) overlaps with the center of MRF ribbon (7).
A kind of Magnetorheologicai polishing liquid withdrawer the most according to claim 1: it is characterized in that, described draining hole (3) is
Sector open, opening angle scope is 90 ° ~ 180 °, and open height is more than the thickness of MRF ribbon (7), less than described
Reclaim the thickness of cover (1).
A kind of Magnetorheologicai polishing liquid withdrawer the most according to claim 1: it is characterized in that, described screen layer (5) material
Material is permeability magnetic material.
A kind of Magnetorheologicai polishing liquid withdrawer the most according to claim 1: it is characterized in that, described Magnetorheologicai polishing liquid
Withdrawer is arranged on a position in magnetorheological polishing wheel (6) surface, diagonally forward or rear ramp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610833949.9A CN106272086B (en) | 2016-09-20 | 2016-09-20 | A kind of Magnetorheologicai polishing liquid recover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610833949.9A CN106272086B (en) | 2016-09-20 | 2016-09-20 | A kind of Magnetorheologicai polishing liquid recover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106272086A true CN106272086A (en) | 2017-01-04 |
| CN106272086B CN106272086B (en) | 2018-08-17 |
Family
ID=57711942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610833949.9A Active CN106272086B (en) | 2016-09-20 | 2016-09-20 | A kind of Magnetorheologicai polishing liquid recover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106272086B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107703881A (en) * | 2017-09-11 | 2018-02-16 | 中国工程物理研究院机械制造工艺研究所 | A kind of device of automatic Calibration MRF ribbon thickness |
| CN109396968A (en) * | 2018-12-20 | 2019-03-01 | 中国人民解放军国防科技大学 | Semi-closed extension formula magnetic current becomes burnishing device |
| CN110722428A (en) * | 2019-10-23 | 2020-01-24 | 中国科学院光电技术研究所 | Magnetorheological sub-aperture polishing device suitable for large-aperture optical element |
| CN111482854A (en) * | 2020-05-28 | 2020-08-04 | 中国工程物理研究院机械制造工艺研究所 | Slit type magnetorheological polishing solution recoverer |
| CN114310644A (en) * | 2022-01-20 | 2022-04-12 | 中国工程物理研究院机械制造工艺研究所 | Energizing coil type magnetorheological polishing solution recoverer and device |
| CN114734305A (en) * | 2022-04-25 | 2022-07-12 | 厦门大学 | Magnetorheological polishing solution recoverer with air-magnetic sealing combination |
| CN115157019A (en) * | 2022-08-18 | 2022-10-11 | 中国人民解放军国防科技大学 | Wheel ring type magnetorheological polishing head and magnetorheological polishing machine tool |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1202848A (en) * | 1995-10-16 | 1998-12-23 | 拜卢克普科学公司 | Deterministic magnetorheological finishing |
| CN101249637A (en) * | 2008-03-25 | 2008-08-27 | 中国人民解放军国防科学技术大学 | Magnetic current change polishing solution circulating device capable of long-time steadily polishing solution performance |
| CN101249626A (en) * | 2008-03-25 | 2008-08-27 | 中国人民解放军国防科学技术大学 | Magnetic current changing polishing device for large caliber aspheric surface optical part |
| US20120009854A1 (en) * | 2010-07-09 | 2012-01-12 | Charles Michael Darcangelo | Edge finishing apparatus |
| CN102501146A (en) * | 2011-12-30 | 2012-06-20 | 清华大学 | Device for realizing rotary fluid supply and recycle during revolving/rotating type magnetorheological polishing |
| CN103465171A (en) * | 2013-09-18 | 2013-12-25 | 中国科学院上海光学精密机械研究所 | Magnetorheological fluid recovery pipe |
| CN104290038A (en) * | 2014-09-26 | 2015-01-21 | 中国科学院长春光学精密机械与物理研究所 | High-flow magnetorheogical fluid recycling device |
-
2016
- 2016-09-20 CN CN201610833949.9A patent/CN106272086B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1202848A (en) * | 1995-10-16 | 1998-12-23 | 拜卢克普科学公司 | Deterministic magnetorheological finishing |
| CN101249637A (en) * | 2008-03-25 | 2008-08-27 | 中国人民解放军国防科学技术大学 | Magnetic current change polishing solution circulating device capable of long-time steadily polishing solution performance |
| CN101249626A (en) * | 2008-03-25 | 2008-08-27 | 中国人民解放军国防科学技术大学 | Magnetic current changing polishing device for large caliber aspheric surface optical part |
| US20120009854A1 (en) * | 2010-07-09 | 2012-01-12 | Charles Michael Darcangelo | Edge finishing apparatus |
| CN102501146A (en) * | 2011-12-30 | 2012-06-20 | 清华大学 | Device for realizing rotary fluid supply and recycle during revolving/rotating type magnetorheological polishing |
| CN103465171A (en) * | 2013-09-18 | 2013-12-25 | 中国科学院上海光学精密机械研究所 | Magnetorheological fluid recovery pipe |
| CN104290038A (en) * | 2014-09-26 | 2015-01-21 | 中国科学院长春光学精密机械与物理研究所 | High-flow magnetorheogical fluid recycling device |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107703881A (en) * | 2017-09-11 | 2018-02-16 | 中国工程物理研究院机械制造工艺研究所 | A kind of device of automatic Calibration MRF ribbon thickness |
| CN107703881B (en) * | 2017-09-11 | 2023-08-04 | 中国工程物理研究院机械制造工艺研究所 | Device for automatically calibrating thickness of magnetorheological polishing ribbon |
| CN109396968A (en) * | 2018-12-20 | 2019-03-01 | 中国人民解放军国防科技大学 | Semi-closed extension formula magnetic current becomes burnishing device |
| CN110722428A (en) * | 2019-10-23 | 2020-01-24 | 中国科学院光电技术研究所 | Magnetorheological sub-aperture polishing device suitable for large-aperture optical element |
| CN110722428B (en) * | 2019-10-23 | 2021-09-07 | 中国科学院光电技术研究所 | Magnetorheological sub-aperture polishing device suitable for large-aperture optical element |
| CN111482854A (en) * | 2020-05-28 | 2020-08-04 | 中国工程物理研究院机械制造工艺研究所 | Slit type magnetorheological polishing solution recoverer |
| CN114310644A (en) * | 2022-01-20 | 2022-04-12 | 中国工程物理研究院机械制造工艺研究所 | Energizing coil type magnetorheological polishing solution recoverer and device |
| CN114734305A (en) * | 2022-04-25 | 2022-07-12 | 厦门大学 | Magnetorheological polishing solution recoverer with air-magnetic sealing combination |
| CN115157019A (en) * | 2022-08-18 | 2022-10-11 | 中国人民解放军国防科技大学 | Wheel ring type magnetorheological polishing head and magnetorheological polishing machine tool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106272086B (en) | 2018-08-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106272086A (en) | A kind of Magnetorheologicai polishing liquid withdrawer | |
| CN207238749U (en) | One kind injection extraction well formula soil in-situ elution repair system | |
| CN103803680B (en) | Membrane type sewage filter system | |
| CN201959860U (en) | Fluid deironing device | |
| CN204511379U (en) | A kind of extension type taper-shaped blade pipeline scraper | |
| CN106285551B (en) | Packer for sand washing concentric pipe | |
| CN110104892A (en) | A kind of whirlpool solidification groundwater remediation system and its restorative procedure | |
| CN205154608U (en) | Slush pump water filtering device | |
| CN205444275U (en) | Deep water closed silt device of taking out of drowning oneself | |
| CN204326217U (en) | Heavy mud plastic inspection well | |
| CN105772167B (en) | A kind of efficient ball mill with circular-arc lining plate | |
| CN103353014B (en) | double protection valve lock | |
| CN102179294A (en) | Method and device for removing iron in fluid | |
| CN206206898U (en) | A kind of hydraulic engineering pipeline with screen pack | |
| CN206042737U (en) | A kind of nested type filters corrugated tube step by step | |
| CN205628230U (en) | Medicine grinder | |
| CN104939283B (en) | Peanut cleaning machine | |
| CN208915208U (en) | A kind of cement culvert pipe short distance transfer device | |
| CN204299507U (en) | A kind of sand clean out pipe | |
| CN104632175A (en) | Split type negative pressure back-exhaust device and process method | |
| CN208106392U (en) | A kind of geothermal well | |
| CN207169125U (en) | A kind of sedimentation basin | |
| CN106219900A (en) | A kind of underground water pollution multistep treatment purifier | |
| CN204099740U (en) | A kind of polyethylene punching soakaway trench | |
| CN208555276U (en) | A kind of Chinese medicine cleaning device of circulating water |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |