CN102777448B - Compound filter for hydraulic system - Google Patents
Compound filter for hydraulic system Download PDFInfo
- Publication number
- CN102777448B CN102777448B CN201210296142.8A CN201210296142A CN102777448B CN 102777448 B CN102777448 B CN 102777448B CN 201210296142 A CN201210296142 A CN 201210296142A CN 102777448 B CN102777448 B CN 102777448B
- Authority
- CN
- China
- Prior art keywords
- pipe
- filter screen
- filter
- truncated cone
- flange
- 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.)
- Expired - Fee Related
Links
Abstract
The invention relates to a compound filter for a hydraulic system. The technical scheme is as follows: a top cover (1) is provided with an oil inlet pipe (5) and a signal sender (2), the upper end of a conical pipe (7) is fixedly connected with the upper part of the inner wall of a cylindrical shell (9) through a flange, and the lower end of the conical pipe (7) is fixedly connected with a bottom filter assembly (10) through a flange. The inner edge of a spiral filter screen (8) and an inner framework (13) of the filter screen are welded together; the inner framework (13) of the filter screen is spirally welded on the outer wall of an exhaust pipe (3); the outer edge of the spiral filter screen (8) and an outer framework (15) of the filter screen are welded together; the outer side of the outer framework (15) of the filter screen is provided with a seal groove in which a sealing strip (17) is arranged; the exhaust pipe (3) on which the spiral filter screen (8) is welded is concentrically arranged in the conical pipe (7); the sealing strip (17) spirally clings to the inner wall of the conical pipe (7); and the upper end of the exhaust pipe (3) penetrates out the center of the top cover (1). The compound filter has the characteristics of good filter effect, high air exhaust efficiency, convenience in cleaning a filter element, capability of prolonging the service life and low running cost.
Description
Technical field
The invention belongs to hydraulic system and use filter technology field.Relate in particular to a kind of hydraulic system composite type filter.
Background technique
Generally, 75% hydraulic system fault causes because fluid is contaminated, therefore hydraulic system is high to the turbidity test requirement of fluid, especially Hydrauservo System, requires higher to cleanliness of hydraulic oil.So must filter hydraulic system, get rid of pollutant and gas in fluid.The return filter that existing hydraulic system is used, its complex structure, inconvenience is cleaned, and the more renew cartridge of generally take, as main, is single layer filter, and its filter efficiency is low, and can not remove gas.For ease of the pollutant in fluid and air, further remove, existing fuel tank can only pass through enlarging volume, fluid flowing time in fuel tank is extended, thereby make deposition of dirt and bubble floating, oil-tank filtering and the exhaust effect of this non-imposed removal dirt and gas are poor.
In sum, there are the following problems for existing filter: filter is single layer filter only, and poor filtration effect can not be got rid of the gas in fluid, filter element cleaning difficulty.
Summary of the invention
The present invention is intended to overcome above-mentioned technological deficiency, and object is to provide that air elimination factor in a kind of good filtration effect, fluid is high, easy to clean, long service life and the little hydraulic system composite type filter of fuel tank volume.
For achieving the above object, the technical solution used in the present invention is: hydraulic system comprises the outer skeleton of top cover, signal-transmitting machine, outlet pipe, oil inlet pipe, truncated cone pipe, helical filter screen, cylinder shell, bottom filter assemblies, oil outlet, filter screen inner frame and filter screen with composite type filter.
The flange of cylinder shell upper end is fixedly connected by bolt and top cover, and top cover is provided with oil inlet pipe and signal-transmitting machine, and bottom or the bottom of cylinder shell are provided with oil outlet.
The flange of truncated cone pipe upper end is by concentricity being fixedly connected of flange of bolt and cylinder shell upper inside wall, the flange of truncated cone pipe lower end is by bolt and concentricity being fixedly connected of bottom filter assemblies flange, and the distance of the lower plane of bottom filter assemblies and cylinder shell bottom is 10 ~ 20mm.
The inner edge of helical filter screen and the welding of filter screen inner frame, filter screen inner frame is welded on the outer wall of outlet pipe in the shape of a spiral, the outer frame welding of the outer rim of helical filter screen and filter screen, the outside of the outer skeleton of filter screen has seal groove, and sealing strip is housed in seal groove; The outlet pipe that is welded with helical filter screen is inserted in truncated cone pipe concentrically, and sealing strip is close to truncated cone inner tube wall in the shape of a spiral, and the upper end of outlet pipe passes from the center of top cover.
Surface of contact under surface of contact between the surface of contact between the surface of contact between cylinder shell upper flanges and top cover, the exhaust duct aperture of top cover and outlet pipe, truncated cone pipe upper flanges and cylinder shell upper inside wall flange, truncated cone pipe between end flange and bottom filter assemblies upper flanges is provided with first " O " RunddichtringO, second " O " RunddichtringO, the 3rd " O " RunddichtringO, the 4th " O " RunddichtringO successively.
Described truncated cone tubing matter is corrosion resistant plate, the thickness of corrosion resistant plate is 5 ~ 15mm, and the height of truncated cone pipe is 2 ~ 4 times of truncated cone pipe upper end diameter, and cone angle is 10 ~ 30 °, the top and bottom of truncated cone pipe are welded with flange, and flange thickness is 8 ~ 12mm.
Described oil inlet pipe latus rectum is 15 ~ 100mm, and oil inlet pipe is " L " shape, and " L " shape oil inlet pipe can be considered and forms by two sections, and one section of filler opening is filler opening section, and one section of oil outlet is oil outlet section.The angle of the oil outlet section center line of the filler opening section center line of its oil inlet pipe and oil inlet pipe is 90 ~ 95 °, and the angle of the formed plane of center line of the filler opening section center line of oil inlet pipe and outlet pipe and the oil outlet section center line of oil inlet pipe is 35 ~ 45 °.
The bottom of described outlet pipe has 3 ~ 5 circle inlet holes, and the axial distance of every circle inlet hole is 10 ~ 15mm; Every circle inlet hole is 5 ~ 7, and 5 ~ 7 inlet holes are evenly distributed on same circumference, and the diameter of inlet hole is 1 ~ 2mm.
Described bottom filter assemblies comprises bottom filtration housing, tubular filter net and ring-type press strip; It is barrel-shaped that housing is filtered in bottom, and the upper end that housing is filtered in bottom is welded with flange, and the cylndrical surface that housing is filtered in bottom has four logical hydraulic fluid ports equably, and the Area Ratio that housing cylndrical surface is filtered in the gross area of four logical hydraulic fluid ports and bottom is 1:(1.5 ~ 2.5); Tubular filter net is close to the inwall that housing is filtered in bottom, and the top and bottom of tubular filter net are pressed on by ring-type press strip the upper and lower that inner walls is filtered in bottom respectively, and ring-type press strip is fixed by screws in the inwall that housing is filtered in bottom; The internal diameter that housing is filtered in bottom equates with the internal diameter of truncated cone pipe lower end.
Owing to adopting technique scheme, the present invention can play the double action of removing pollutant and gas, has not only dwindled fuel tank volume, and has reduced the operating cost of hydraulic system.In the present invention, hydraulic system oil liquid contains dirt and gas to enter truncated cone pipe inner after work, fuel-displaced section of oil inlet pipe in filter in horizontal direction or downward-sloping 5 ° with interior layout, fluid penetrates along the center line of oil outlet section, the angle of oil outlet section center line and vertical surface is 35 ~ 45 °, the formed plane of center line of the filler opening section center line that this vertical surface is oil inlet pipe and outlet pipe.Especially the present invention inserts the outlet pipe that is welded with helical filter screen in truncated cone pipe, make fluid accelerate to flow downward along truncated cone pipe spirality, dirt in fluid is dirty in cylindrical at centrifugal action, and final treated clean fluid flows out by oil outlet.Because filter screen is helicoidal structure, be equivalent to multiple filtration, can effectively improve filtering effect; Gas in fluid is concentrated and is flowed to center, by outlet pipe, discharges.Thereby realize and forcibly remove gas, be greatly better than the method that freely floats to get rid of gas by gas in oil in fuel tank.Meanwhile, filter core easy accessibility of the present invention, cleans filter core convenient.
The stainless steel square steel wire outside of the outer skeleton of filter screen of the present invention has seal groove, sealing strip is housed in groove, when the element kit that the parts such as skeleton and sealing strip form outside outlet pipe, filter screen inner frame, helical filter screen, filter screen is inserted in truncated cone pipe from top, under the effect of element kit gravity, make sealing strip be close to truncated cone inner tube wall, seal.When filter screen is obstructed to a certain degree, signal-transmitting machine is sent out signal, at this moment, can open top cover, takes out filter core and cleans or change, and the clean filter core after cleaning or changing can again pack in this filter and uses.
Therefore the feature that, the present invention has good filtration effect, Bas Discharged efficiency is high, cleaning filter core facilitates, increase the service life, operating cost is low.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the local enlarged diagram of I in Fig. 1;
Fig. 3 is the local enlarged diagram of II in Fig. 1;
Fig. 4 is bottom filter assemblies figure.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described, not the restriction to protection scope of the present invention.
embodiment 1
A kind of hydraulic system composite type filter.This composite type filter is as shown in Figure 1: comprise the outer skeleton 15 of top cover 1, signal-transmitting machine 2, outlet pipe 3, oil inlet pipe 5, truncated cone pipe 7, helical filter screen 8, cylinder shell 9, bottom filter assemblies 10, oil outlet 11, filter screen inner frame 13 and filter screen.
The flange of cylinder shell 9 upper ends is fixedly connected by bolt and top cover 1, and top cover 1 is provided with oil inlet pipe 5 and signal-transmitting machine 2, and the bottom of cylinder shell 9 or bottom are provided with oil outlet 11.
The flange of truncated cone pipe 7 upper ends is by concentricity being fixedly connected of flange of bolt and cylinder shell 9 upper inside wall, the flange of truncated cone pipe 7 lower ends is by bolt and concentricity being fixedly connected of bottom filter assemblies 10 flanges, and the distance of the lower plane of bottom filter assemblies 10 and cylinder shell 9 bottoms is 10 ~ 20mm.
As shown in figures 1 and 3, the inner edge of helical filter screen 8 and filter screen inner frame 13 weld the mode that is fixedly connected of helical filter screen 8 and outlet pipe [3], and filter screen inner frame 13 is welded on the outer wall of outlet pipe 3 in the shape of a spiral; As depicted in figs. 1 and 2, the outer skeleton 15 of its outer rim and filter screen welds the outer rim of helical filter screen 8, and the outside of the outer skeleton 15 of filter screen has seal groove, and sealing strip 17 is housed in seal groove.The outlet pipe 3 that is welded with helical filter screen 8 is inserted in truncated cone pipe 7 concentrically, and sealing strip 17 is close to the inwall of truncated cone pipe 7 in the shape of a spiral; The upper end of outlet pipe 3 passes from the center of top cover 1.
7 times end flange of surface of contact, truncated cone pipe and the surface of contact between bottom filter assemblies 10 upper flanges between surface of contact, truncated cone pipe 7 upper flanges and cylinder shell 9 upper inside wall flanges that the surface of contact that cylinder shell 9 upper flanges and top cover are 1, the exhaust duct aperture of top cover 1 and outlet pipe are 3 are provided with first " O " RunddichtringO 16, second " O " RunddichtringO 4, the 3rd " O " RunddichtringO 6, the 4th " O " RunddichtringO 12 successively.
Described truncated cone pipe 7 materials are corrosion resistant plate, the thickness of corrosion resistant plate is 5 ~ 15mm, and the height of truncated cone pipe 7 is 2 ~ 4 times of truncated cone pipe 7 upper end diameter, and cone angle is 10 ~ 30 °, the top and bottom of truncated cone pipe 7 are welded with flange, and flange thickness is 8 ~ 12mm.
The latus rectum of described oil inlet pipe 5 is 15 ~ 100mm, oil inlet pipe 5 is " L " shape, " L " shape oil inlet pipe can be considered by two sections and forms, one section of filler opening is filler opening section, one section of oil outlet is oil outlet section, the angle of the oil outlet section center line of the filler opening section center line of oil inlet pipe 5 and oil inlet pipe 5 is 90 ~ 95 °, and the angle of the formed plane of center line of the filler opening section center line of oil inlet pipe 5 and outlet pipe 3 and the oil outlet section center line of oil inlet pipe 5 is 35 ~ 45 °.
The bottom of described outlet pipe 3 has 3 ~ 5 circle inlet holes 14, and the axial distance of every circle inlet hole 14 is 10 ~ 15mm; Every circle inlet hole 14 is 5 ~ 7, and 5 ~ 7 inlet holes 14 are evenly distributed on same circumference, and the diameter of inlet hole 14 is 1 ~ 2mm.
Described bottom filter assemblies 10 is as shown in Figure 4: comprise that bottom filters housing 18, tubular filter net 19 and ring-type press strip 20; It is barrel-shaped that housing 18 is filtered in bottom, the upper end that housing 18 is filtered in bottom is welded with flange, the cylndrical surface that housing 18 is filtered in bottom has four logical hydraulic fluid ports equably, and the Area Ratio that housing 18 cylndrical surface are filtered in the gross area of four logical hydraulic fluid ports and bottom is 1:(1.5 ~ 2.5); Tubular filter net 19 is close to the inwall that housing 18 is filtered in bottom, the top and bottom of tubular filter net 19 are pressed on by ring-type press strip 20 upper and lower that housing 18 inwalls are filtered in bottom respectively, and ring-type press strip 20 is fixed by screws in the inwall that housing 18 is filtered in bottom; The internal diameter that housing 18 is filtered in bottom equates with the internal diameter of truncated cone pipe 7 lower ends.
This embodiment can play the double action of removing pollutant and gas, has not only dwindled fuel tank volume, and has reduced the operating cost of hydraulic system.In this embodiment, hydraulic system oil liquid contains dirt and gas enters truncated cone pipe 7 inside after work, oil inlet pipe 5 becomes substantially horizontal or downward-sloping 1 ~ 5 ° of layout in filter, fluid penetrates along the center line of oil outlet section, the angle of oil outlet section center line and vertical surface is 35 ~ 45 °, and this vertical surface is the formed plane of center line of filler opening section center line and the outlet pipe 3 of oil inlet pipe 5.
Especially this embodiment is inserted the outlet pipe 3 that is welded with helical filter screen 8 in truncated cone pipe 7, make fluid accelerate to flow downward along truncated cone pipe 7 spirality, dirt in fluid is dirty in cylindrical at centrifugal action, and final treated clean fluid flows out by oil outlet 11.Because filter screen is helicoidal structure, be equivalent to multiple filtration, can effectively improve filtering effect; Gas in fluid is concentrated and is flowed to center, by outlet pipe 3, discharges.Thereby realize and forcibly remove gas, be greatly better than the method that freely floats to get rid of gas by gas in oil in fuel tank.Meanwhile, filter core easy accessibility of the present invention, cleans filter core convenient.
The stainless steel square steel wire outside of the outer skeleton 15 of filter screen that this embodiment adopts has seal groove, sealing strip 17 is housed in groove, the element kit that the parts such as skeleton 15 and sealing strip 17 form outside outlet pipe 3, filter screen inner frame 13, helical filter screen 8, filter screen is inserted truncated cone pipe 7 when interior from top, under the effect of element kit gravity, make sealing strip 17 be close to truncated cone pipe 7 inwalls, seal.When filter screen is obstructed to a certain degree, 2 signals of signal-transmitting machine, at this moment, can open top cover 1, take out filter core and clean or change, and the clean filter core after cleaning or changing can again pack in this filter and uses.
Therefore the feature that, this embodiment has good filtration effect, Bas Discharged efficiency is high, cleaning filter core facilitates, increase the service life, operating cost is low.
Claims (5)
1. a hydraulic system composite type filter, is characterized in that this filter comprises the outer skeleton (15) of top cover (1), signal-transmitting machine (2), outlet pipe (3), oil inlet pipe (5), truncated cone pipe (7), helical filter screen (8), cylinder shell (9), bottom filter assemblies (10), oil outlet (11), filter screen inner frame (13) and filter screen;
The flange of cylinder shell (9) upper end is fixedly connected by bolt and top cover (1), and top cover (1) is provided with oil inlet pipe (5) and signal-transmitting machine (2), and the bottom of cylinder shell (9) or bottom are provided with oil outlet (11);
The flange of truncated cone pipe (7) upper end is by concentricity being fixedly connected of flange of bolt and cylinder shell (9) upper inside wall, the flange of truncated cone pipe (7) lower end is by bolt and concentricity being fixedly connected of bottom filter assemblies (10) flange, and the distance of the lower plane of bottom filter assemblies (10) and cylinder shell (9) bottom is 10 ~ 20mm;
The inner edge of helical filter screen (8) and filter screen inner frame (13) welding, filter screen inner frame (13) is welded on the outer wall of outlet pipe (3) in the shape of a spiral, outer skeleton (15) welding of the outer rim of helical filter screen (8) and filter screen, the outside of the outer skeleton (15) of filter screen has seal groove, and sealing strip (17) is housed in seal groove; The outlet pipe (3) that is welded with helical filter screen (8) is inserted in truncated cone pipe (7) concentrically, and sealing strip (17) is close to truncated cone pipe (7) inwall in the shape of a spiral; The upper end of outlet pipe (3) passes from the center of top cover (1);
Surface of contact between the surface of contact between the surface of contact between the surface of contact between cylinder shell (9) upper flanges and top cover (1), the exhaust duct aperture of top cover (1) and outlet pipe (3), truncated cone pipe (7) upper flanges and cylinder shell (9) upper inside wall flange, the lower end flange of truncated cone pipe (7) and bottom filter assemblies (10) upper flanges is provided with first " O " RunddichtringO (16), second " O " RunddichtringO (4), the 3rd " O " RunddichtringO (6), the 4th " O " RunddichtringO (12) successively.
2. hydraulic system composite type filter according to claim 1, it is characterized in that described truncated cone pipe (7) material is corrosion resistant plate, the thickness of corrosion resistant plate is 5 ~ 15mm, the height of truncated cone pipe (7) is 2 ~ 4 times of truncated cone pipe (7) upper end diameter, cone angle is 10 ~ 30 °, the top and bottom of truncated cone pipe (7) are welded with flange, and flange thickness is 8 ~ 12mm.
3. hydraulic system composite type filter according to claim 1, it is characterized in that described oil inlet pipe (5) is " L " shape, its latus rectum is 15 ~ 100mm, the angle of the oil outlet section center line of the filler opening section center line of oil inlet pipe (5) and oil inlet pipe (5) is 90 ~ 95 °, and the angle of the formed plane of center line of the filler opening section center line of oil inlet pipe (5) and outlet pipe (3) and the oil outlet section center line of oil inlet pipe (5) is 35 ~ 45 °.
4. hydraulic system composite type filter according to claim 1, is characterized in that the bottom of described outlet pipe (3) has 3 ~ 5 circle inlet holes (14), and the axial distance of every circle inlet hole (14) is 10 ~ 15mm; Every circle inlet hole (14) is 5 ~ 7, and 5 ~ 7 inlet holes (14) are evenly distributed on same circumference, and the diameter of inlet hole (14) is 1 ~ 2mm.
5. hydraulic system composite type filter according to claim 1, is characterized in that described bottom filter assemblies (10) comprises bottom filtration housing (18), tubular filter net (19) and ring-type press strip (20); It is barrel-shaped that housing (18) is filtered in bottom, the upper end that housing (18) is filtered in bottom is welded with flange, the cylndrical surface that housing (18) is filtered in bottom has four logical hydraulic fluid ports equably, and the Area Ratio that housing (18) cylndrical surface is filtered in the gross area of four logical hydraulic fluid ports and bottom is 1:(1.5 ~ 2.5); Tubular filter net (19) is close to the inwall that housing (18) is filtered in bottom, the top and bottom of tubular filter net (19) are pressed on by ring-type press strip (20) upper and lower that housing (18) inwall is filtered in bottom respectively, and ring-type press strip (20) is fixed by screws in the inwall that housing (18) is filtered in bottom; The internal diameter that housing (18) is filtered in bottom equates with the internal diameter of truncated cone pipe (7) lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210296142.8A CN102777448B (en) | 2012-08-20 | 2012-08-20 | Compound filter for hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210296142.8A CN102777448B (en) | 2012-08-20 | 2012-08-20 | Compound filter for hydraulic system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102777448A CN102777448A (en) | 2012-11-14 |
| CN102777448B true CN102777448B (en) | 2014-09-03 |
Family
ID=47122495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210296142.8A Expired - Fee Related CN102777448B (en) | 2012-08-20 | 2012-08-20 | Compound filter for hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102777448B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111569502A (en) * | 2020-06-11 | 2020-08-25 | 广东省资源综合利用研究所 | Spiral solid-liquid separation device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4476021A (en) * | 1982-06-22 | 1984-10-09 | Alexander Souza | Rust, scale and foreign particle arrester |
| CN2166869Y (en) * | 1993-05-27 | 1994-06-01 | 大庆石油管理局油田建设设计研究院 | Spiral supporting frame filtration net |
| CN2439549Y (en) * | 2000-08-18 | 2001-07-18 | 何得田 | Fuel, gas and water separation and dirt reducing device for diesel engine |
| CN2532904Y (en) * | 2002-02-20 | 2003-01-29 | 闻长庆 | Filter |
| US6568539B1 (en) * | 1996-12-17 | 2003-05-27 | Dei-Tec Corporation | Renewable filter with a bypass valve |
| CN2609635Y (en) * | 2003-04-18 | 2004-04-07 | 刘刚 | Whirlwind net type filter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2809029B1 (en) * | 2000-05-16 | 2002-06-21 | Johnson Filtration Systems | METHOD FOR MANUFACTURING A MECHANICAL FILTRATION BASKET |
-
2012
- 2012-08-20 CN CN201210296142.8A patent/CN102777448B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4476021A (en) * | 1982-06-22 | 1984-10-09 | Alexander Souza | Rust, scale and foreign particle arrester |
| CN2166869Y (en) * | 1993-05-27 | 1994-06-01 | 大庆石油管理局油田建设设计研究院 | Spiral supporting frame filtration net |
| US6568539B1 (en) * | 1996-12-17 | 2003-05-27 | Dei-Tec Corporation | Renewable filter with a bypass valve |
| CN2439549Y (en) * | 2000-08-18 | 2001-07-18 | 何得田 | Fuel, gas and water separation and dirt reducing device for diesel engine |
| CN2532904Y (en) * | 2002-02-20 | 2003-01-29 | 闻长庆 | Filter |
| CN2609635Y (en) * | 2003-04-18 | 2004-04-07 | 刘刚 | Whirlwind net type filter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102777448A (en) | 2012-11-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202867428U (en) | Hydraulic filter | |
| CN216320316U (en) | Machine-mounted water filtering device capable of backwashing for heading machine | |
| CN106552447A (en) | A kind of backpulsing self-cleaning filter with the water body mechanism of decompressor | |
| CN105233545B (en) | Spiral plate type filtration system and method | |
| CN102777448B (en) | Compound filter for hydraulic system | |
| CN208641949U (en) | A kind of novel precision filter | |
| CN202315460U (en) | Multistage filter | |
| CN104667627B (en) | The filter mechanism of a kind of filter and do not block high accuracy effluent filter | |
| CN202506198U (en) | Oilfield water injection back-flushing type filtration dirt separator | |
| CN201030256Y (en) | Multi-component self-washing net scrubbing device | |
| CN215855434U (en) | Spiral degassing and pollution discharging device | |
| CN201064690Y (en) | Self-cleaning filter | |
| CN211585543U (en) | Dirty oil filtering and purifying device polluted by high-concentration ultrafine particle pollutants | |
| CN206793173U (en) | A kind of backwash filter | |
| CN208049486U (en) | The more filtering element self-cleaning filters of suctorial type | |
| CN112604364B (en) | Composite dirt remover | |
| CN108130149B (en) | Natural gas separation filter element | |
| CN219429856U (en) | Industrial multi-medium filter | |
| CN105413275B (en) | High flux antipollution millipore filter and its filter method | |
| CN201454219U (en) | Sealed filter | |
| CN204582740U (en) | A kind of filter mechanism of filter and do not block high accuracy effluent filter | |
| CN220125627U (en) | Off-line self-cleaning filter | |
| CN215841904U (en) | Filter element type filter for oil-liquid separation | |
| CN218890207U (en) | Wastewater separator convenient for internal cleaning | |
| CN210521925U (en) | High-pollutant-receiving high-flux folding filter element |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 Termination date: 20150820 |
|
| EXPY | Termination of patent right or utility model |