CN103871715B - transformer oil circulation purifier - Google Patents
transformer oil circulation purifier Download PDFInfo
- Publication number
- CN103871715B CN103871715B CN201410114362.3A CN201410114362A CN103871715B CN 103871715 B CN103871715 B CN 103871715B CN 201410114362 A CN201410114362 A CN 201410114362A CN 103871715 B CN103871715 B CN 103871715B
- Authority
- CN
- China
- Prior art keywords
- oil
- screen pipe
- pipe
- transformer
- fuel
- 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.)
- Active
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000012535 impurity Substances 0.000 claims abstract description 32
- 229910052742 iron Inorganic materials 0.000 claims abstract description 21
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 238000012216 screening Methods 0.000 claims abstract description 4
- 238000010521 absorption reaction Methods 0.000 claims abstract description 3
- 238000007789 sealing Methods 0.000 claims description 23
- 238000000034 method Methods 0.000 abstract description 9
- 230000000903 blocking effect Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 73
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 239000010724 circulating oil Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Filtration Of Liquid (AREA)
- Feeding And Controlling Fuel (AREA)
Abstract
The invention discloses a kind of transformer oil circulation purifier, comprise screen pipe, oil inlet pipe, flowline and liquid current relay, this liquid current relay is located on screen pipe, described screen pipe comprises the oil-feed screen pipe that removably connects with oil inlet pipe and to removably connect fuel-displaced screen pipe with flowline, removably connects between oil-feed screen pipe and fuel-displaced screen pipe; Described oil inlet pipe is provided with the first valve, and flowline is provided with the second valve; Be provided with the screen pack of impurity screening in oil-feed screen pipe, screen pack is recessed to form the recess holding impurity to fuel-displaced side, and in or beyond fuel-displaced screen pipe, side is arranged with the first permanent magnet and second permanent magnet of absorption iron filings; Jettison gear is provided with bottom screen pipe; Described filter can filter thoroughly to transformer oil, and then serves the effect of protection to transformer, also can pull down screen pipe and clear up, ensure not blocking channel in oil tank of transformer use procedure.
Description
Technical field
The present invention relates to field transformer, especially relate to a kind of transformer oil circulation purifier.
Background technology
Transformer in use can discharge a large amount of heats, for reducing the heat of transformer, transformer can be placed in the oil tank of transformer that transformer oil is housed, be absorbed the heat of the release of transformer by transformer oil, and then reduce the temperature of transformer; And in order to reduce the heat of transformer oil, heat sink also can be connected on oil tank of transformer, transformer oil is passed in heat sink and lowers the temperature.
Oil tank of transformer is through polishing by polylith iron plate, knock, the modes such as welding combine, the impurity such as a large amount of iron filings can be produced in its manufacture process, and people usually only can before use with hairbrush brush several times, then use cloth to wipe with a wiping, the impurity such as iron filings cannot be removed clean, simultaneously after loading transformer oil, along with the work of heat sink, transformer oil can take the impurity such as the iron filings in oil tank of transformer out of, if clear up not in time, enter in transformer and can damage transformer, affect the use of transformer, even burn transformer, and oil tank of transformer in use, remove inconvenient, and the impurity such as iron filings are very many, what have is also very little, remove very difficult.
Summary of the invention
The present invention, in order to overcome the deficiencies in the prior art, provides one can clean impurity when heat radiation makes, and the cool cycles oil strainer of not blocking channel.
To achieve these goals, the present invention is by the following technical solutions: a kind of transformer oil circulation purifier, comprise screen pipe, oil inlet pipe, flowline and liquid current relay, this liquid current relay is located on screen pipe, described screen pipe comprises the oil-feed screen pipe that removably connects with oil inlet pipe and to removably connect fuel-displaced screen pipe with flowline, removably connects between oil-feed screen pipe and fuel-displaced screen pipe; Described oil inlet pipe is provided with the first valve, and flowline is provided with the second valve; Be provided with the screen pack of impurity screening in oil-feed screen pipe, screen pack is recessed to form the recess holding impurity to fuel-displaced side, and in or beyond fuel-displaced screen pipe, side is arranged with the first permanent magnet and second permanent magnet of absorption iron filings; Jettison gear is provided with bottom screen pipe.
As preferably, described oil-feed screen pipe is positioned at described screen pack oil-feed side and forms the holding tank holding and exceed the outer impurity of screen pack.
As preferably, described first permanent magnet and described second permanent magnet are arcuate structure, and arc range is 30 °-150 °.
With described fuel-displaced screen pipe junction on described oil-feed screen pipe, be provided with cannelure along inwall one circle, described screen pack is located in this cannelure.
As preferably, also comprise liquid current relay.
As preferably, described oil inlet pipe and described oil-feed screen pipe junction are provided with oil-feed sealing ring, and described fuel-displaced screen pipe and described flowline junction are provided with fuel-displaced sealing ring, are provided with intermediate seal circle between oil-feed screen pipe and fuel-displaced screen pipe.
As preferably, described first valve and described oil inlet pipe junction are provided with the first sealing ring, and described second valve and described flowline junction are provided with the second sealing ring.
As preferably, described first valve and the second valve are butterfly valve.
As preferably, described jettison gear is sealing plug or sealing bolt.
Operation principle: described filter is clean impurity in transformer oil radiation processes, transformer circulating oil filter is located between oil tank of transformer and heat abstractor, for the oil-feed of oil tank of transformer, be provided with screen pack, the impurity that oil tank of transformer inner volume is larger can be filtered out, and permanent magnet is set, the iron filings of the small size that screen pack cannot filter can be adsorbed, and this arranges and can automatically filter impurity such as the iron filings in oil tank of transformer, filter without the need to manual operation, the impurity such as iron filings are avoided to enter transformer, and valve is set, during cleaning, only need valve-off, pull down screen pipe, cleaned out and again loaded onto again.
In sum, the present invention has the following advantages: can filter thoroughly transformer oil, and then serves the effect of protection to transformer, also can pull down screen pipe and clear up, ensure not blocking channel in oil tank of transformer use procedure.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is A-A face structural representation in Fig. 1.
Fig. 3 is filter screen structure schematic diagram of the present invention.
Embodiment
In order to make those skilled in the art person better understand the present invention program, below in conjunction with the accompanying drawing in the embodiment of the present invention, clear, complete description is carried out to the technical scheme in the embodiment of the present invention.
As Figure 1-3, a kind of transformer oil circulation purifier, comprise liquid current relay 6, screen pipe 1, oil inlet pipe 2 and flowline 3, described liquid current relay 6 is located on screen pipe 1, this liquid current relay is set, the transformer oil flow in pipeline can be measured and be shown, convenient observation, thus impurity level in prediction screen pipe, then determine whether screen pipe is cleaned; Described screen pipe 1 comprises oil-feed screen pipe 12 and fuel-displaced screen pipe 13, oil-feed screen pipe 12 and oil inlet pipe 2 removably connect, fuel-displaced screen pipe 13 removably connects with flowline 3, removably connect between oil-feed screen pipe 12 and fuel-displaced screen pipe 13, this removable filter pipe is set, conveniently it is cleared up, and screen pipe is set as dismountable fuel-displaced screen pipe and oil-feed screen pipe, cleaning gets up to be more prone to, more thoroughly; Described oil inlet pipe 2 and oil-feed screen pipe 12 junction are provided with oil-feed sealing ring, flowline 3 and fuel-displaced screen pipe 13 junction are provided with fuel-displaced sealing ring, be provided with intermediate seal circle 15 between oil-feed screen pipe 12 and fuel-displaced screen pipe 13, above-mentioned sealing ring be set, strengthen sealing effectiveness; Described oil inlet pipe 2 is provided with the first valve 8, flowline 3 is provided with the second valve 9, first valve 8 is provided with the first sealing ring with oil inlet pipe 2 junction, described second valve 9 is provided with the second sealing ring with flowline 3 junction, described first valve and the second valve are butterfly valve, certainly can also be break valve, gate valve etc., the opening and closing that convenience valve controls flowline and oil inlet pipe passage are set, sealing ring are set and enhance valve and the sealing effectiveness between oil inlet pipe and flowline.
Further, the screen pack 11 of impurity screening is provided with in described oil-feed screen pipe 12, this screen pack can filter out the impurity such as the larger iron filings of volume, concrete, described screen pack 11 is recessed to form the recess holding impurity to fuel-displaced side, the shape of this recess can be multiple, as truncated cone-shaped, prismatic table shape etc., and in the present embodiment, described screen pack 11 is pyramidal structure, screen pack 11 comprises tip and openend, openend is oil inlet end, openend is fixed by installing ring and screen pipe 12, installing ring is provided with brace rod vertically, this brace rod works to screen pack 11 effect of making, screen pack 11 is avoided to rock because of the flowing of transformer oil, the screen pack of this shape can stop a large amount of impurity, simultaneously not blocking channel, by installing ring and the integrally welded structure of oil-feed screen pipe 12, fixing screen pack can be realized, and in the present embodiment, with fuel-displaced screen pipe 13 junction on described oil-feed screen pipe 12, along inwall one circle be provided with cannelure, described installing ring is located in this cannelure, when this is arranged on clean, desirable go out screen pack clear up, clear up more thorough, in order to increase impurity saturation further, described oil-feed screen pipe 12 is positioned at screen pack 11 oil-feed side and forms a holding tank 14, and this holding tank exceeds the impurity of screen pack for settling, and avoids impurity too much to block screen pipe.Jettison gear 7 is provided with bottom screen pipe 1, concrete, this jettison gear is located at holding tank 14 bottom surface, described jettison gear is sealing bolt, also can be sealing plug, after closing the first valve 8 and the second valve 9, pull down jettison gear, the transformer oil in screen pipe 1 can be released, the dismounting of convenient screen pipe.
Concrete, fuel-displaced screen pipe 13 arranges permanent magnet 5, the first permanent magnet 51 that this permanent magnet 5 comprises and the second permanent magnet 52, be greater than middle magnetic according to the magnetic of physical principle magnet end, be divided into two and strengthen its magnetic; In other embodiments, can the first permanent magnet 51 and the second permanent magnet 52 be arranged on fuel-displaced screen pipe 13 inwall, namely two holddown grooves are set on fuel-displaced screen pipe 13 inwall, then the first permanent magnet 51 and the second permanent magnet 52 are arranged on respectively in holddown groove, this arranges and can prevent permanent magnet 5 from moving with transformer oil; And in the present embodiment, described first permanent magnet 51 and the second permanent magnet 52 all curved, and be all located at the periphery of fuel-displaced screen pipe, arrange the small size iron filings that this permanent magnet energy adsorption filter screen cannot filter out, the suction iron filings of permanent magnet are effective; The present embodiment adopts installation permanent magnet mode to be more prone to, convenient production, and does not affect the circulation of transformer in flowline; Further, the first permanent magnet 51 of described arc and the radian of the second permanent magnet 52 are all set to 60 °; Certainly, the radian of the first permanent magnet 51 and the second permanent magnet 52 can also be 30 °-59 ° or 61 °-150 °, and the magnetic force arranging the magnet formation in this arc range is strong, is conducive to adsorbing iron filings.
Concrete, the connection of described oil inlet pipe 2 and oil-feed screen pipe 12 is Flange joint, and flowline 3 is Flange joint with the connection of fuel-displaced screen pipe 13, and fuel-displaced screen pipe 13 is also Flange joint with the connection of oil-feed screen pipe 12; And the first valve 8 is also Flange joint with the connected mode of oil inlet pipe 2 and the connected mode of the second valve 9 and flowline 3, this connected mode is installed firmly, convenient disassembly.
Described filter is clean impurity in transformer oil radiation processes, transformer circulating oil filter is located between oil tank of transformer and heat abstractor, can be used for the oil-feed of oil tank of transformer, also may be used for the fuel-displaced of oil tank of transformer, screen pack and permanent magnet double filtration are set, be provided with screen pack, the impurity that oil tank of transformer inner volume is larger can be filtered out, and permanent magnet is set, the iron filings of the small size that screen pack cannot filter can be adsorbed, can automatically filter impurity such as the iron filings in oil tank of transformer, filter without the need to manual operation, and the passage that valve can control to close screen pipe two ends is set, during cleaning, only need valve-off, pull down screen pipe, cleaned out and again loaded onto again, open valve, the impurity such as iron filings are avoided to enter in transformer, damage transformer, and then transformer is served to the effect of protection, also can pull down screen pipe in oil tank of transformer use procedure to clear up simultaneously, ensure not blocking channel.
When described filter is used for the oil-feed of oil tank of transformer, oil inlet pipe 2 is connected with heat abstractor, flowline 3 is connected with oil tank of transformer, its filter process: when the transformer oil in oil tank of transformer carries out circulation cooling, transformer oil motion drives the impurity such as iron filings to dispel the heat in flowline arrival heat abstractor, and the transformer oil after heat radiation drives impurity to enter the oil inlet pipe 2 that filter is housed; After the impurity that volume is larger is filtered net 11 stop, be deposited in holding tank, the iron filings of small volume then pass screen pack 11 with transformer oil, arrive the fuel-displaced one end of screen pipe 1, by the first permanent magnet 51 and the second permanent magnet 52 adsorb, through filter 11 filter after transformer oil get back in oil tank of transformer from flowline 3; Observe the flow velocity of the transformer oil that liquid current relay 6 shows simultaneously, when transformer flow velocity is too low, need clear up filter.And when filter being used for oil tank of transformer fuel-displaced, oil inlet pipe is connected with oil tank of transformer, and flowline is connected with heat abstractor, similar when its filter process and oil-feed for oil tank of transformer.
Scale removal process: first close the first valve 8 and the second valve 9, stop the flowing of transformer oil in pipeline, then oil discharge screw of back-outing, the transformer oil in screen pipe 1 is released, turn on the sealing bolt that screen pipe 1 two ends are connected with oil inlet pipe 2 and flowline 3 again, unload screen pipe 1; Take off permanent magnet 5, iron filings are cleaned out, then screen pipe is split into oil-feed screen pipe 12 and fuel-displaced screen pipe 13, take off screen pack 11, thoroughly clean; After having cleared up, then tightened by oil discharge screw, screen pack 11 reinstalls oil-feed screen pipe 12, oil-feed screen pipe 12 is reinstalled into screen pipe 1 with fuel-displaced screen pipe 13, the two ends of screen pipe 1 are connected with oil inlet pipe 2 and flowline 3 respectively, oil discharge screw of screwing on, complete the installation after cleaning; Reopen the first valve 8 and the second valve 9, transformer oil flows through filter, and filter restarts to filter.
Obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, should belong to the scope of protection of the invention.
Claims (8)
1. a transformer oil circulation purifier, it is characterized in that: comprise screen pipe (1), oil inlet pipe (2), flowline (3) and liquid current relay (6), this liquid current relay (6) is located on screen pipe (1), described screen pipe (1) comprises the oil-feed screen pipe (12) that removably connects with oil inlet pipe (2) and to removably connect fuel-displaced screen pipe (13) with flowline (3), removably connects between oil-feed screen pipe (12) and fuel-displaced screen pipe (13); Described oil inlet pipe (2) is provided with the first valve (8), and flowline (3) is provided with the second valve (9); The screen pack (11) of impurity screening is provided with in oil-feed screen pipe (12), screen pack (31) is recessed to form the recess holding impurity to fuel-displaced side, in or beyond fuel-displaced screen pipe (13), side is arranged with the first permanent magnet (51) and second permanent magnet (52) of absorption iron filings; Screen pipe (1) bottom is provided with jettison gear (7).
2. transformer oil circulation purifier according to claim 1, is characterized in that: described oil-feed screen pipe (12) is positioned at described screen pack (11) oil-feed side and forms the holding tank (14) holding and exceed the outer impurity of screen pack.
3. according to the transformer oil circulation purifier that claim 1 is stated, it is characterized in that: described first permanent magnet (51) and described second permanent magnet (52) are arcuate structure, and arc range is 30 °-150 °.
4. transformer oil circulation purifier according to claim 1, it is characterized in that: with described fuel-displaced screen pipe (13) junction on described oil-feed screen pipe (12), be provided with cannelure along inwall one circle, described screen pack (11) is located in this cannelure.
5. transformer oil circulation purifier according to claim 1, it is characterized in that: described oil inlet pipe (2) and described oil-feed screen pipe (12) junction are provided with oil-feed sealing ring, described fuel-displaced screen pipe (13) and described flowline (3) junction are provided with fuel-displaced sealing ring, are provided with intermediate seal circle (15) between oil-feed screen pipe (12) and fuel-displaced screen pipe (13).
6. transformer oil circulation purifier according to claim 1, it is characterized in that: described first valve (8) and described oil inlet pipe (2) junction are provided with the first sealing ring, described second valve (9) and described flowline (3) junction are provided with the second sealing ring.
7. transformer oil circulation purifier according to claim 1, is characterized in that: described first valve (8) and the second valve (9) are butterfly valve.
8. transformer oil circulation purifier according to claim 1, is characterized in that: described jettison gear (7) is sealing plug or sealing bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410114362.3A CN103871715B (en) | 2014-03-26 | 2014-03-26 | transformer oil circulation purifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410114362.3A CN103871715B (en) | 2014-03-26 | 2014-03-26 | transformer oil circulation purifier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103871715A CN103871715A (en) | 2014-06-18 |
| CN103871715B true CN103871715B (en) | 2016-02-03 |
Family
ID=50910151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410114362.3A Active CN103871715B (en) | 2014-03-26 | 2014-03-26 | transformer oil circulation purifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103871715B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105632835B (en) * | 2014-12-03 | 2018-06-15 | 郑州大学 | A kind of two station high voltage load switches |
| CN105546049A (en) * | 2015-11-30 | 2016-05-04 | 陈伟 | Shunt output-type water-cooling cycloid reduction gearbox for earth pressure balance shield machine |
| CN105465284A (en) * | 2015-12-07 | 2016-04-06 | 陈伟 | Split-flow output type cycloid reduction box of shield machine |
| CN105576536B (en) * | 2015-12-16 | 2018-01-12 | 中船重工海博威(江苏)科技发展有限公司 | A kind of immersion oil processing unit for single point mooring system transmission of electricity |
| CN105508520A (en) * | 2015-12-30 | 2016-04-20 | 陈伟 | Flow-dividing output type air cooling cycloidal speed reduction box of soil pressure balance shield machine |
| CN105889195A (en) * | 2016-05-12 | 2016-08-24 | 张华芳 | Method for treating hydraulic oil by adopting electrification, separation, electric hammer adsorption and rotating magnetic fields |
| CN107904340A (en) * | 2017-11-23 | 2018-04-13 | 莫宝兰 | A kind of magnetic slag cooling device |
| CN108579145A (en) * | 2018-05-23 | 2018-09-28 | 盐城派威机械有限公司 | A kind of new-type fuel tank filter and filter method |
| CN110867304A (en) * | 2019-11-29 | 2020-03-06 | 常熟市友邦散热器有限责任公司 | Filter element fin type radiator |
| CN115023277B (en) * | 2020-03-06 | 2023-11-07 | 舍弗勒技术股份两合公司 | External magnetic filter assembly |
| CN112474039B (en) * | 2020-11-02 | 2022-10-28 | 长春三鼎变压器有限公司 | Magnetic filtering device for purifying transformer oil |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87210289U (en) * | 1987-07-14 | 1988-04-06 | 罗固事 | Transformer oil regenerating device while operating |
| EP0566776A2 (en) * | 1992-04-18 | 1993-10-27 | Daimler-Benz Aerospace Aktiengesellschaft | Process and equipment for oil cleaning |
| DE4320711A1 (en) * | 1993-06-23 | 1995-01-05 | Peter Rusbuelt | Process for cleaning transformers |
| CN202654804U (en) * | 2012-06-13 | 2013-01-09 | 格宝工具(昆山)有限公司 | Cooling oil filtering system |
| CN203397838U (en) * | 2013-07-27 | 2014-01-15 | 安德利集团有限公司 | Amorphous alloy oil-immersed transformer |
| CN203839166U (en) * | 2014-03-26 | 2014-09-17 | 浙江江山特种变压器有限公司 | Circulatory purifier for transformer oil |
-
2014
- 2014-03-26 CN CN201410114362.3A patent/CN103871715B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87210289U (en) * | 1987-07-14 | 1988-04-06 | 罗固事 | Transformer oil regenerating device while operating |
| EP0566776A2 (en) * | 1992-04-18 | 1993-10-27 | Daimler-Benz Aerospace Aktiengesellschaft | Process and equipment for oil cleaning |
| DE4320711A1 (en) * | 1993-06-23 | 1995-01-05 | Peter Rusbuelt | Process for cleaning transformers |
| CN202654804U (en) * | 2012-06-13 | 2013-01-09 | 格宝工具(昆山)有限公司 | Cooling oil filtering system |
| CN203397838U (en) * | 2013-07-27 | 2014-01-15 | 安德利集团有限公司 | Amorphous alloy oil-immersed transformer |
| CN203839166U (en) * | 2014-03-26 | 2014-09-17 | 浙江江山特种变压器有限公司 | Circulatory purifier for transformer oil |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103871715A (en) | 2014-06-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103871715B (en) | transformer oil circulation purifier | |
| CN103985511B (en) | Install the transformer heat exchanger of oil cleaner additional | |
| CN203790689U (en) | Online net replacement filter of steel rolling cooling water circulating system | |
| CN205252686U (en) | Water course filter equipment | |
| CN203839166U (en) | Circulatory purifier for transformer oil | |
| CN203839165U (en) | Heat exchanger with oil purifier for transformer | |
| CN203253233U (en) | Ceramic water filter with self-cleaning function | |
| CN104258613A (en) | Backwashing ultrasonic filter | |
| CN204637713U (en) | A kind of material microporous filter | |
| CN204246905U (en) | Novel vibrating filter | |
| CN203799804U (en) | Small transformer oil absorption machine with filter function | |
| CN211357995U (en) | A high-efficiency and energy-saving water filtration device | |
| CN203391128U (en) | Mortar filtering system for silicon chip cutting machine tool | |
| CN102698486B (en) | Filtering device of circulating system | |
| CN211288823U (en) | Combined double-hole ball valve | |
| CN203425628U (en) | Self-cleaning steam filter | |
| CN208627991U (en) | The supersonic wave cleaning machine of jet stream in a kind of roller | |
| CN221815524U (en) | Filter equipment of convenient dismouting | |
| CN204420172U (en) | Scrubbing type welding ball valve | |
| CN201997178U (en) | Floor heating filter screen cleaning device | |
| CN204051151U (en) | Reversely-washing supersonic filter | |
| CN206404480U (en) | A kind of filter of efficient plus fluororesin filter device | |
| CN203342498U (en) | Locomotive water tank opening filtering device | |
| CN206001735U (en) | A kind of centrifugal refrigerating unit with backwash cleaning device | |
| CN205153102U (en) | Sewer line filter equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 324104, Jiang He industrial corridor No. 137, Qing Lake junction, Jiangshan, Zhejiang, Quzhou Applicant after: Zhejiang Proview Electric Applicance Co., Ltd Address before: 324104, Jiang He industrial corridor No. 137, Qing Lake junction, Jiangshan, Zhejiang, Quzhou Applicant before: Zhejiang Jiangshan Special Transformer Co., Ltd. |
|
| COR | Change of bibliographic data | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |