CN110630594A - Hydraulic oil filtering mechanism, hydraulic device and high-voltage circuit breaker - Google Patents
Hydraulic oil filtering mechanism, hydraulic device and high-voltage circuit breaker Download PDFInfo
- Publication number
- CN110630594A CN110630594A CN201910945781.4A CN201910945781A CN110630594A CN 110630594 A CN110630594 A CN 110630594A CN 201910945781 A CN201910945781 A CN 201910945781A CN 110630594 A CN110630594 A CN 110630594A
- Authority
- CN
- China
- Prior art keywords
- oil
- valve
- pipe
- hydraulic
- filter
- 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
Links
- 239000010720 hydraulic oil Substances 0.000 title claims abstract description 69
- 238000001914 filtration Methods 0.000 title claims abstract description 42
- 239000003921 oil Substances 0.000 claims abstract description 224
- 238000005086 pumping Methods 0.000 claims abstract description 44
- 238000002347 injection Methods 0.000 claims abstract description 5
- 239000007924 injection Substances 0.000 claims abstract description 5
- 239000000835 fiber Substances 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 239000012815 thermoplastic material Substances 0.000 claims description 6
- 229920000642 polymer Polymers 0.000 claims description 5
- 239000000945 filler Substances 0.000 claims description 4
- 239000003365 glass fiber Substances 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 239000012535 impurity Substances 0.000 description 9
- 230000008018 melting Effects 0.000 description 6
- 238000002844 melting Methods 0.000 description 6
- 239000002245 particle Substances 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 229920002292 Nylon 6 Polymers 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention discloses a hydraulic oil filtering mechanism, a hydraulic device and a high-voltage circuit breaker. The hydraulic oil filtering mechanism comprises: an oil pump; the filter component comprises a filter container and a filter element arranged in the filter container; the pipeline assembly comprises an oil conveying pipe, an oil pumping pipe, an oil filling pipe, an oil pumping valve and an oil filling valve, wherein the oil pump is communicated with the oil tank through the oil conveying pipe, the filtering container is communicated with the oil pump through the oil pumping pipe, the filtering container is communicated with the oil tank through the oil filling pipe, the oil pumping valve is arranged on the oil pumping pipe, and the oil filling valve is arranged on the oil filling pipe; the controller is electrically connected with the oil pumping valve, the oil injection valve and the oil pump respectively so as to control the oil pumping valve, the oil injection valve and the oil pump to operate; the hydraulic device comprises the hydraulic oil filtering mechanism; the high-voltage circuit breaker comprises the hydraulic device. The hydraulic oil filtering mechanism can recycle hydraulic oil and reduce cost.
Description
Technical Field
The invention relates to the technical field of oil, in particular to a hydraulic oil filtering mechanism, a hydraulic device and a high-voltage circuit breaker.
Background
Along with the continuous increase of the number of primary power transformation equipment, impurities are often mixed in hydraulic oil of a hydraulic mechanism of the circuit breaker. When the maintenance work of equipment maintenance is carried out, new hydraulic oil is often carried and used for replacement, and the scrapping and disposal cost of old hydraulic oil is higher due to the environmental protection requirement. And frequent replacement of the hydraulic oil leads to increased costs.
Disclosure of Invention
Therefore, the invention needs to provide a hydraulic oil filtering mechanism which can recycle the hydraulic oil and reduce the cost.
The invention also provides a hydraulic device.
The invention also provides a high-voltage circuit breaker.
In order to realize the purpose of the invention, the invention adopts the following technical scheme:
a hydraulic oil filter mechanism comprising:
an oil pump;
the filter component comprises a filter container and a filter element arranged in the filter container;
the pipeline assembly comprises an oil delivery pipe, an oil pumping pipe, an oil filling pipe, an oil pumping valve and an oil filling valve, the oil pump is communicated with an oil tank through the oil delivery pipe, the filter container is communicated with the oil pump through the oil pumping pipe, the filter container is communicated with the oil tank through the oil filling pipe, the oil pumping valve is installed on the oil pumping pipe, and the oil filling valve is installed on the oil filling pipe; and
the controller is electrically connected with the oil pumping valve, the oil filling valve and the oil pump respectively so as to control the oil pumping valve, the oil filling valve and the oil pump to operate; when the oil pumping valve is opened, the oil pump operates, and the oil filling valve is closed; when the oil filling valve is opened, the oil pumping valve and the oil pump are closed.
Foretell hydraulic oil filtering mechanism when the old oil in the oil tank can not be used, takes the old oil of oil tank out to filtering the container through controller automatic control oil pump and filters, and rethread notes oil pipe returns the oil tank and continues to use after the filtration is accomplished, just so can recycle old hydraulic oil, reduce cost still is favorable to the environmental protection.
In some embodiments, the filter element is an activated carbon filter element.
In some of these embodiments, the filter element comprises a thermally bonded sheet made from 10% to 90% by weight bicomponent binder fibers comprising two polymers made from thermoplastic materials and 10% to 90% by weight glass fibers.
In some embodiments, the hydraulic oil filtering mechanism further includes an oil distributing pipe communicated with the oil filling pipe, the oil distributing pipe is provided with an oil detector for detecting oil and an oil distributing valve arranged at an interval from the oil detector, the oil distributing valve is far away from the oil filling pipe relative to the oil detector, and the oil detector and the oil distributing valve are electrically connected to the controller.
In some embodiments, the hydraulic oil filtering mechanism further comprises a stop valve, and the stop valve is installed on the oil filling pipe between the oil filling valve and the oil tank.
In some embodiments, the diameter of the oil pumping pipe and the oil filling pipe is 1cm-5cm, and the number of the oil pumping pipe and the oil filling pipe is at least two.
In some embodiments, the hydraulic oil filtering mechanism further comprises a mounting frame, and the oil pump and the filtering container are both mounted on the mounting frame.
In some embodiments, the mounting frame includes two side plates disposed opposite to each other, a bottom plate connected to the side plates, and a top plate connected to the side plates, the oil pump and the filter container are both mounted on the bottom plate, the oil pumping pipe and the oil filling pipe are both disposed through the top plate to extend above the top plate, and the oil pumping valve and the oil filling valve are both located on the top plate.
In some embodiments, the mounting frame further comprises rollers mounted to the bottom of the bottom plate or the side plates.
The invention also provides a hydraulic device, which comprises an oil tank and the hydraulic oil filtering mechanism, wherein the oil pump is communicated with the oil tank through the oil conveying pipe, and the filtering container is communicated with the oil tank through the oil filling pipe.
The invention also provides a high-voltage circuit breaker which comprises the hydraulic device.
Drawings
Fig. 1 is a schematic structural diagram of a hydraulic oil filtering mechanism according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a hydraulic oil filtering mechanism according to another embodiment of the present invention.
Detailed Description
In order that the invention may be more fully understood, reference will now be made to the following description. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Example one
Referring to fig. 1, the present invention provides a hydraulic oil filtering mechanism 100 for recycling old hydraulic oil, the hydraulic oil filtering mechanism 100 includes an oil pump 10, a filtering component 20, a pipeline assembly 30 and a controller, the pipeline assembly 30 includes an oil pipeline 31, an oil pumping pipe 32, an oil filling pipe 33, an oil pumping valve 34 and an oil filling valve 35, the oil pump 10 is connected to an oil tank 40 through the oil pipeline 31 to pump the old hydraulic oil in the oil tank 40, the filtering component 20 includes a filtering container 21 and a filter element 22 installed in the filtering container 21, the filtering container 21 is connected to the oil pump 10 through the oil pumping pipe 32, the filtering container 21 is connected to the oil tank 40 through the oil filling pipe 33, the oil pumping valve 34 is installed on the oil pumping pipe 32, the oil filling valve 35 is installed on the oil filling pipe 33, and the controller is electrically connected to the oil pumping valve 34, the oil filling valve 35 and.
When the old hydraulic oil in the oil tank 40 is used up, the controller controls the oil pumping valve 34 to be opened, the oil filling valve 35 to be closed, the oil pump 10 to operate, the old hydraulic oil in the oil tank 40 is pumped into the filtering container 21, the oil pumping valve 34 is closed, the oil pump 10 is closed, the filter element 22 purifies the old hydraulic oil, after the purification is finished, the oil filling valve 35 is opened, the purified hydraulic oil in the filtering container 21 flows to the oil tank 40 through the oil filling pipe 33, and the old hydraulic oil is continuously used; after the hydraulic oil is used for a period of time, the hydraulic oil is circularly operated again for purification until the hydraulic oil can not be used. Therefore, the purpose of recycling the old hydraulic oil is achieved, and the cost is reduced; therefore, the waste hydraulic oil is greatly reduced, partial equipment for treating the hydraulic oil is omitted, the cost is further reduced, and the environment is protected.
The oil pump 10 is a general liquid pump and serves the purpose of pumping liquid.
In one embodiment, the filter container 21 of the filter member 20 may be any shape of a cylinder, a square column, or a globe lamp. The material is made of corrosion-resistant material. The interior of the filter container 21 is provided with a positioning and mounting member to securely mount the filter cartridge 22 within the filter member 20.
In one embodiment, the filter element 22 of the filter element 20, which may be an activated carbon filter element, adsorbs impurities in the oil by adsorption, thereby achieving the purpose of purification.
In other embodiments, the filter element comprises a thermally bonded sheet made from 10% to 90% by weight bicomponent binder fibers comprising two polymers made from thermoplastic materials and 10% to 90% by weight glass fibers.
For example, thermoplastic materials include polyester and include nylon 6, nylon 6, 12. The diameter of the bicomponent adhesive fiber is 5-50 μm, the length of the fiber is 0.1-15 cm, the diameter of the glass fiber is 0.1-5 μm, and the aspect ratio is 10-10000.
The bicomponent binder fibers have a sheath-core structure in which the sheath is made of a low melting component thermoplastic material of suitable melting point and the core is made of a higher melting component thermoplastic material of suitable melting point. Lobed fibers may also be used, with a lower melting polymer at the top end and a higher melting polymer at the bottom end. All have better adsorption and impurity removal effects.
The filter element has unique medium or medium layer combination, high permeability, high medium strength, high efficiency and long filtering life. Impurities in the hydraulic oil can be filtered in a targeted manner, and the purity of the hydraulic oil is improved.
Of course, in other embodiments, the filter element may be made of other materials. The material and the structure of the filter element are not limited, and the oil liquid can be well adsorbed.
The conduit assembly 30 is used to transport hydraulic oil between the various components. The oil delivery pipe 31, the oil pumping pipe 32, the oil filling pipe 33, the oil pumping valve 34 and the oil filling valve 35 may be made of plastic, and are conveniently installed in various spaces. In one embodiment, oil pickup tube 32 and oil pickup tube 22 are each 1cm to 5cm in diameter and are each at least two in number. When the pipeline with the diameter meets large-particle impurities, the flow speed is obviously reduced, so that whether large-particle substances exist in the hydraulic oil can be detected by detecting the flow speed; the hydraulic oil is conveyed through more than two pipelines, so that the flow is ensured, and the blockage can be prevented.
Speed sensors can be arranged in the oil pumping pipe 32 and the oil injection pipe 22, and once large-particle substances in hydraulic oil are not filtered completely and pipelines are blocked, the flow rate is remarkably reduced, a signal is transmitted to the controller, and the controller controls the whole equipment to stop running, so that the maintenance is carried out. If the diameters of the oil suction pipe 32 and the oil filling pipe 22 are set to be large, large particles are encountered, and the large particles flow into the oil tank 40 along with the fluid, so that the hydraulic oil in the oil tank 40 is not filtered cleanly.
Referring to fig. 2, in an embodiment, the hydraulic oil filtering mechanism 100 further includes an oil distributing pipe 36 connected to the oil filling pipe 33, the oil distributing pipe 36 is provided with an oil detector 36 for detecting oil and an oil distributing valve 38 disposed on the oil separating detector 36, the oil distributing valve 38 is disposed far away from the oil filling pipe 33 relative to the oil detector 36, and the oil detector 36 and the oil distributing valve 38 are electrically connected to the controller. The oil distributing valve 38 is normally in a closed state, the hydraulic oil passing through the oil filling pipe 33 is detected by the oil detector 36, when it is detected that the hydraulic oil contains more particulate matters or impurities, a signal is sent to the controller, and the controller controls the oil distributing valve 38 to open, so that the hydraulic oil containing more impurities is distributed but flows little or does not flow into the oil tank 40.
Further, the hydraulic oil filter mechanism 100 further includes a stop valve 50, and the stop valve 50 is installed on the filler pipe 33 between the filler valve 33 and the oil tank 10. When it is detected that the hydraulic oil contains more particulate matters or impurities, a signal is sent to the controller, and the controller controls the oil distributing valve 38 to be opened, the stop valve 50 to be closed, and the hydraulic oil containing more impurities is distributed and does not flow into the oil tank 40. This ensures that hydraulic oil which cannot be purified by filtration cannot flow into the oil tank 40 again.
In one embodiment, the hydraulic oil filtering mechanism 100 further includes a leakage protector electrically connected to the circuit of the controller, so that when the electric circuit of any one of the oil pump 10 and the filtering component 20 leaks, the electric circuit can be cut off for maintenance, and the whole electric circuit is protected.
Referring to fig. 1 and fig. 2, the hydraulic oil filtering mechanism 100 further includes a mounting bracket 60, and the oil pump 10 and the filtering container 20 are both mounted on the mounting bracket 60. This collates the oil pump 10 with the filter container 20 and the pipe assembly 30.
In one embodiment, the mounting frame 60 includes two side plates 61 disposed opposite to each other, a bottom plate 62 connected to the side plates 61, and a top plate 63 connected to the side plates 61, the oil pump 10 and the filter container 20 are both mounted on the bottom plate 62, the oil pumping pipe 32 and the oil filling pipe 33 are both inserted through the top plate 63 to extend above the top plate 63, and the oil filling valve 35 is positioned on the top plate 63. So that the oil suction valve 34 and the oil filling valve 35 can be operated more conveniently. If the suction valve 34 and the fill valve 35 are interposed between the bottom plate 62 and the top plate 63, it is inconvenient to operate the suction valve 34 and the fill valve 35.
Further, the mounting bracket 60 includes rollers 64 mounted to the bottom of the bottom plate 62 or the side plate 63. The hydraulic oil filter mechanism 100 can be moved by the roller 64 to push the hydraulic oil filter mechanism 100 to the hydraulic device to be cleaned.
The invention also protects a hydraulic device, which comprises an oil tank 40 and the hydraulic oil filtering mechanism 100, wherein the oil pump 10 is communicated with the oil tank 40 through an oil pipeline 31, and the filtering container 21 is communicated with the oil tank 10 through an oil filling pipe 33. The hydraulic device can recycle the old hydraulic oil repeatedly.
The invention also protects a high-voltage circuit breaker, which comprises the hydraulic device. Therefore, the high-voltage circuit breaker can reduce the use cost of hydraulic oil and improve the environmental protection performance.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A hydraulic oil filter mechanism, comprising:
an oil pump;
the filter component comprises a filter container and a filter element arranged in the filter container;
the pipeline assembly comprises an oil delivery pipe, an oil pumping pipe, an oil filling pipe, an oil pumping valve and an oil filling valve, the oil pump is communicated with an oil tank through the oil delivery pipe, the filter container is communicated with the oil pump through the oil pumping pipe, the filter container is communicated with the oil tank through the oil filling pipe, the oil pumping valve is installed on the oil pumping pipe, and the oil filling valve is installed on the oil filling pipe; and
the controller is electrically connected with the oil pumping valve, the oil filling valve and the oil pump respectively so as to control the oil pumping valve, the oil filling valve and the oil pump to operate; when the oil pumping valve is opened, the oil pump operates, and the oil filling valve is closed; when the oil filling valve is opened, the oil pumping valve and the oil pump are closed.
2. The hydraulic oil filter mechanism of claim 1, wherein the filter element is an activated carbon filter element.
3. The hydraulic oil filter arrangement according to claim 1, characterized in that the filter element comprises a thermoadhesive sheet made of 10-90% by weight of bicomponent adhesive fibers comprising two polymers made of thermoplastic material and 10-90% by weight of glass fibers.
4. The hydraulic oil filter mechanism of claim 1, further comprising an oil distribution pipe communicated with the oil injection pipe, wherein the oil distribution pipe is provided with an oil detector for detecting oil and an oil distribution valve spaced from the oil detector, the oil distribution valve is further away from the oil injection pipe than the oil detector, and the oil detector and the oil distribution valve are electrically connected to the controller.
5. The hydraulic oil filter mechanism according to claim 4, further comprising a stop valve installed on the filler pipe between the filler valve and the oil tank.
6. The hydraulic oil filter mechanism according to claim 1, further comprising a mounting bracket, wherein the oil pump and the filter container are both mounted on the mounting bracket.
7. The hydraulic oil filtering mechanism according to claim 6, wherein the mounting bracket includes two side plates disposed opposite to each other, a bottom plate connected to the side plates, and a top plate connected to the side plates, the oil pump and the filtering container are both mounted on the bottom plate, the oil pumping pipe and the oil injecting pipe are both disposed through the top plate to extend above the top plate, and the oil pumping valve and the oil injecting valve are both located on the top plate.
8. The hydraulic oil filter mechanism of claim 7, wherein the mounting bracket further comprises rollers mounted to the bottom of the bottom plate or the side plate.
9. A hydraulic apparatus comprising a tank, characterized by further comprising a hydraulic oil filter mechanism according to any one of claims 1 to 8, said oil pump being in communication with said tank through said oil delivery pipe, said filter container being in communication with said tank through said oil filling pipe.
10. A high-voltage circuit breaker, characterized in that it comprises a hydraulic device according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910945781.4A CN110630594A (en) | 2019-09-30 | 2019-09-30 | Hydraulic oil filtering mechanism, hydraulic device and high-voltage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910945781.4A CN110630594A (en) | 2019-09-30 | 2019-09-30 | Hydraulic oil filtering mechanism, hydraulic device and high-voltage circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110630594A true CN110630594A (en) | 2019-12-31 |
Family
ID=68975483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910945781.4A Pending CN110630594A (en) | 2019-09-30 | 2019-09-30 | Hydraulic oil filtering mechanism, hydraulic device and high-voltage circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110630594A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101098741A (en) * | 2004-11-05 | 2008-01-02 | 唐纳森公司 | Filter medium and structure |
| CN201428669Y (en) * | 2009-07-08 | 2010-03-24 | 广东华隧建设股份有限公司 | Device for oil purification in shield construction |
| CN203663561U (en) * | 2013-12-30 | 2014-06-25 | 安徽山河矿业装备股份有限公司 | Movable waste oil recycling and filtering device |
| CN211259216U (en) * | 2019-09-30 | 2020-08-14 | 广州供电局有限公司 | Hydraulic oil filtering mechanism, hydraulic device and high-voltage circuit breaker |
-
2019
- 2019-09-30 CN CN201910945781.4A patent/CN110630594A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101098741A (en) * | 2004-11-05 | 2008-01-02 | 唐纳森公司 | Filter medium and structure |
| CN201428669Y (en) * | 2009-07-08 | 2010-03-24 | 广东华隧建设股份有限公司 | Device for oil purification in shield construction |
| CN203663561U (en) * | 2013-12-30 | 2014-06-25 | 安徽山河矿业装备股份有限公司 | Movable waste oil recycling and filtering device |
| CN211259216U (en) * | 2019-09-30 | 2020-08-14 | 广州供电局有限公司 | Hydraulic oil filtering mechanism, hydraulic device and high-voltage circuit breaker |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101506508B (en) | Fuel filter | |
| US20170246567A1 (en) | Filtering Pump System | |
| CN211259216U (en) | Hydraulic oil filtering mechanism, hydraulic device and high-voltage circuit breaker | |
| GB2492315A (en) | Apparatus and method for fuel filtration with a plurality of filter stages | |
| CN202832312U (en) | Two-vehicle installing pressure unrelief well washing vehicle | |
| CN110630594A (en) | Hydraulic oil filtering mechanism, hydraulic device and high-voltage circuit breaker | |
| CN109731398A (en) | A kind of methanol filter glass Compound filtering material | |
| CN206720798U (en) | A kind of catering trade oily-water seperating equipment | |
| CN102311159A (en) | Filter component, filter apparatus and vehicle | |
| CN110302567B (en) | High-efficient multi-functional essence filter equipment | |
| US7967151B1 (en) | Universal fuel recycling machine | |
| CN206366246U (en) | One kind filtering absolute oil environmental protecting device | |
| RU150518U1 (en) | WASTE WATER FILTER SYSTEM | |
| AU2018366953A1 (en) | Cartridge for filtering contaminated water | |
| CN101648088A (en) | Continuous composite environmental-friendly filter | |
| CN207959336U (en) | A kind of rain collector based on bridge security performance | |
| CN102728121A (en) | Ultramicro sewage filter with backwashing function and method thereof | |
| CN201235246Y (en) | Pipe type composite filter for wastewater | |
| CN2688685Y (en) | Sewage purifier | |
| CN207091171U (en) | Oily sewage treatment device | |
| CN205598759U (en) | Multistage contaminated water filtration apparatus | |
| CN204939012U (en) | Active media water treating equipment | |
| CN205307947U (en) | Processing apparatus of muddy water | |
| CN220723681U (en) | Mine water treatment equipment | |
| CN221522217U (en) | Ocean cloud storehouse oil-water separation device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200923 Address after: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Applicant after: Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd. Address before: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Applicant before: GUANGZHOU POWER SUPPLY Co.,Ltd. |
|
| TA01 | Transfer of patent application right |