CA2997288A1 - Self cleaning filter - Google Patents
Self cleaning filter Download PDFInfo
- Publication number
- CA2997288A1 CA2997288A1 CA2997288A CA2997288A CA2997288A1 CA 2997288 A1 CA2997288 A1 CA 2997288A1 CA 2997288 A CA2997288 A CA 2997288A CA 2997288 A CA2997288 A CA 2997288A CA 2997288 A1 CA2997288 A1 CA 2997288A1
- Authority
- CA
- Canada
- Prior art keywords
- screen
- hollow shaft
- filter
- filtration
- mechanical seal
- 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
- 238000004140 cleaning Methods 0.000 title claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000001914 filtration Methods 0.000 claims abstract description 15
- 239000012530 fluid Substances 0.000 claims abstract description 15
- 238000005406 washing Methods 0.000 claims abstract description 5
- 239000007921 spray Substances 0.000 claims abstract 2
- 239000007788 liquid Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 abstract description 4
- 239000000853 adhesive Substances 0.000 abstract description 3
- 230000001070 adhesive effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 230000001960 triggered effect Effects 0.000 abstract description 2
- 239000000356 contaminant Substances 0.000 abstract 1
- 230000007246 mechanism Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000012459 cleaning agent Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/16—Cleaning-out devices, e.g. for removing the cake from the filter casing or for evacuating the last remnants of liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/31—Self-supporting filtering elements
- B01D29/35—Self-supporting filtering elements arranged for outward flow filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/44—Edge filtering elements, i.e. using contiguous impervious surfaces
- B01D29/48—Edge filtering elements, i.e. using contiguous impervious surfaces of spirally or helically wound bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
- B01D29/6438—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element nozzles
- B01D29/6446—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element nozzles with a rotary movement with respect to the filtering element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
Abstract
The invention provides self-cleaning water/fluids filter with improved cleaning process for filtration of water or another fluids with heavy and adhesive contaminants. The Filter includes Inlet, Outlet, Drain ports with actuated valves, shell, screen and mechanically driven cleaning header with pressure washing nozzles, instrumentation, pump and control panel. In service mode fluid penetrates through the screen slots, therefore suspended solids are accumulated on screen surface that increases differential pressure drop between inlet and outlet. As soon differential pressure reaches set pressure drop, wash cycle is triggered. During the wash cycle, rotating cleaning header sprays water under high pressure on internal surface of the screen. Washing water with solids leaves filter chamber through the drain. When wash cycle is completed, filter returns back to service mode.
Description
2. SPECIFICATION
2.1 DESCRIPTION
2.1.1 THEREFOR
The invention provides self cleaning water/fluids filter with improved cleaning capability for heavily contaminated water or another fluids filtration, using high energy water flow.
2.1.2 BACKGROUND OF THE INVENTION
Self Cleaning Filters have been widely used in water treatment and process industries for many years. There are many types of self cleaning mechanisms such as backwash, suction scanners, brushes and others. Typical examples of described above filters are shown in following patents:
CA 2593141, IMPROVED SELF-CLEANING FILTER FOR AGRICULTURAL
IRRIGATION WATE
CA 1267611, SELF-CLEANING FILTER
CA 2556763, SELF-CLEANING FILTER APPARATUS
CA 2809456, FILTRATION METHOD WITH SELF-CLEANING FILTER ASSEMBLY
CA 2234898, HIGH VOLUME SELF-CLEANING FILTER
US 9,211,489 B2, Dec.15, 2015, Riggers US 9,061,226 B2, Jun 23,2015, Love US 7,913,855 B2. Mar. 29, 2011, Roca US 7,883,624 B2, Feb.8, 2011, Robert, Thibault US 7,192,528 B2, Mar.20, 2007, Prochaska US 6,443,312 B1, Sep.3 , 2002, Racine US 6,419,826 B1, Jul. 16, 2002, Lara US 5,855,794, Jan.5, 1999, Caracciolo US 5,595,655, Jan.21, 1997, Steiner US 4,725,292, Feb. 16, 1988, Williams Though there are an array of self-cleaning filter designs, there has been continued need for improvements.
The most critical problem of existing filter designs is that cleaning mechanism is not able to remove high adhesive particles. Therefore filter needs to be disassembled and manually cleaned with chemicals.
Proposed invention uses high energy rotating water jets to clean internal surface of screen using water or chemicals. So, this mechanism allows flushing heavy deposits formed with adhesive particles. Also in filtration process liquid flows from inside to outside of screen that allows to use the largest size of screen which in turn can fit the filter shell.
2.1.3 DETAILED DESCRIPTION
Proposed invention is represented as pressure vessel, which in turn consists of 20 major parts, shown on FIG.1. Vessel shell, item 9, is connected with vessel top, item 8 and vessel bottom, item 7, by means of clamps, item 6. Above-mentioned components create filter body. Vessel shall, item 9, has mounting brackets for four legs, which support filter.
Vessel bottom, item 7, is connected to inlet/drain header assembly, item 16, which has two valves, item 4, with mounted actuator, item 1. The main function of inlet/drain header is to divert flow depending on operation mode. Outlet port is welded to lower side of vessel shell, item 9, which also has attached actuated valve, item 4.
Key component of the filter is rotating cleaning header, item 13, which direct high energy water flow on the filtration screen surface, item 14.
Rotating cleaning header, item 13, is connected to hollow shaft, item 17, which in turn is part of mechanical seal assembly, item 11. Hollow shaft transmits torque from gear box, item 10, to rotating cleaning header, item 13. Hollow shaft also supplies
2.1 DESCRIPTION
2.1.1 THEREFOR
The invention provides self cleaning water/fluids filter with improved cleaning capability for heavily contaminated water or another fluids filtration, using high energy water flow.
2.1.2 BACKGROUND OF THE INVENTION
Self Cleaning Filters have been widely used in water treatment and process industries for many years. There are many types of self cleaning mechanisms such as backwash, suction scanners, brushes and others. Typical examples of described above filters are shown in following patents:
CA 2593141, IMPROVED SELF-CLEANING FILTER FOR AGRICULTURAL
IRRIGATION WATE
CA 1267611, SELF-CLEANING FILTER
CA 2556763, SELF-CLEANING FILTER APPARATUS
CA 2809456, FILTRATION METHOD WITH SELF-CLEANING FILTER ASSEMBLY
CA 2234898, HIGH VOLUME SELF-CLEANING FILTER
US 9,211,489 B2, Dec.15, 2015, Riggers US 9,061,226 B2, Jun 23,2015, Love US 7,913,855 B2. Mar. 29, 2011, Roca US 7,883,624 B2, Feb.8, 2011, Robert, Thibault US 7,192,528 B2, Mar.20, 2007, Prochaska US 6,443,312 B1, Sep.3 , 2002, Racine US 6,419,826 B1, Jul. 16, 2002, Lara US 5,855,794, Jan.5, 1999, Caracciolo US 5,595,655, Jan.21, 1997, Steiner US 4,725,292, Feb. 16, 1988, Williams Though there are an array of self-cleaning filter designs, there has been continued need for improvements.
The most critical problem of existing filter designs is that cleaning mechanism is not able to remove high adhesive particles. Therefore filter needs to be disassembled and manually cleaned with chemicals.
Proposed invention uses high energy rotating water jets to clean internal surface of screen using water or chemicals. So, this mechanism allows flushing heavy deposits formed with adhesive particles. Also in filtration process liquid flows from inside to outside of screen that allows to use the largest size of screen which in turn can fit the filter shell.
2.1.3 DETAILED DESCRIPTION
Proposed invention is represented as pressure vessel, which in turn consists of 20 major parts, shown on FIG.1. Vessel shell, item 9, is connected with vessel top, item 8 and vessel bottom, item 7, by means of clamps, item 6. Above-mentioned components create filter body. Vessel shall, item 9, has mounting brackets for four legs, which support filter.
Vessel bottom, item 7, is connected to inlet/drain header assembly, item 16, which has two valves, item 4, with mounted actuator, item 1. The main function of inlet/drain header is to divert flow depending on operation mode. Outlet port is welded to lower side of vessel shell, item 9, which also has attached actuated valve, item 4.
Key component of the filter is rotating cleaning header, item 13, which direct high energy water flow on the filtration screen surface, item 14.
Rotating cleaning header, item 13, is connected to hollow shaft, item 17, which in turn is part of mechanical seal assembly, item 11. Hollow shaft transmits torque from gear box, item 10, to rotating cleaning header, item 13. Hollow shaft also supplies
3 high pressure water from high pressure swivel inlet, item 15, to rotating cleaning header, item 13.
Mechanical seal assembly, item 11, supports all rotating components and separates wet pressurized part of filter from dry end, consisting of shaft, item 17, housing item 18, bearing, item 19 and mechanical seal 20, see FIG.2.
Motor, item 12, is close-coupled to gear box, energized during cleaning cycle only.
Filter has two differential pressure switch connections, item 2, which connected to inlet and outlet sides of the filter transmitting pressure for differential pressure switch (switch is not shown on the FIG.1).
Air release valve, item 3, connected to vessel top, item 8. Purpose of the valve is to prevent vacuum when water leaves the filter and to release air when water goes into the filter.
Filter has two modes: service (filtration) mode and cleaning mode.
Service mode is a main process in the filter that separates particular size solids from fluid. Service mode lasts until certain amount of dirt is collected on surface of screen.
Service mode is shown on FIG.4.
During service mode, inlet and outlet valves are open, while drain valve is closed.
Therefore fluid flows inside the screen, penetrating through the slots of the screen and leaving the filter via outlet port.
Fluid pressure before and after screen is monitored with differential pressure switch, which is connected to ports item 2, FIG.1.
If any amount of air gets into the filter, it is released with air release valve, pos. 3, FIG.1.
Rotating cleaning header is not spinning and there is no water inside under pressure of header.
Cleaning mode is shown on FIG.5.
Cleaning mode is triggered by differential pressure switch signal.
Mechanical seal assembly, item 11, supports all rotating components and separates wet pressurized part of filter from dry end, consisting of shaft, item 17, housing item 18, bearing, item 19 and mechanical seal 20, see FIG.2.
Motor, item 12, is close-coupled to gear box, energized during cleaning cycle only.
Filter has two differential pressure switch connections, item 2, which connected to inlet and outlet sides of the filter transmitting pressure for differential pressure switch (switch is not shown on the FIG.1).
Air release valve, item 3, connected to vessel top, item 8. Purpose of the valve is to prevent vacuum when water leaves the filter and to release air when water goes into the filter.
Filter has two modes: service (filtration) mode and cleaning mode.
Service mode is a main process in the filter that separates particular size solids from fluid. Service mode lasts until certain amount of dirt is collected on surface of screen.
Service mode is shown on FIG.4.
During service mode, inlet and outlet valves are open, while drain valve is closed.
Therefore fluid flows inside the screen, penetrating through the slots of the screen and leaving the filter via outlet port.
Fluid pressure before and after screen is monitored with differential pressure switch, which is connected to ports item 2, FIG.1.
If any amount of air gets into the filter, it is released with air release valve, pos. 3, FIG.1.
Rotating cleaning header is not spinning and there is no water inside under pressure of header.
Cleaning mode is shown on FIG.5.
Cleaning mode is triggered by differential pressure switch signal.
4 Inlet and outlet valves closed, while drain valve is open. Also water is pumped under high pressure into rotating cleaning header, item 13, FIG.1, and sprayed with pressure washing nozzles on the internal surface of the screen. Water jets flush solids which are collected on the surface of the screen. Dirty water flows to the drain port.
Air release valve, item 3, FIG.1 allows air to go into the filter in order to prevent vacuum and provides free water flow to drain port.
Upon start of cleaning mode, motor is energized, spinning Rotating Cleaning Header, item 13, FIG.1 with Gearbox, item 10, FIG.1.
Rotating Cleaning Header performs one or more 360 degree turns. Number of turns depends on filter's settings.
Cleaning water is supplied by means of high pressure pump.
Other cleaning liquids or solutions can be used as cleaning agent.
As soon cleaning mode is completed, filter returns to service mode.
Air release valve, item 3, FIG.1 allows air to go into the filter in order to prevent vacuum and provides free water flow to drain port.
Upon start of cleaning mode, motor is energized, spinning Rotating Cleaning Header, item 13, FIG.1 with Gearbox, item 10, FIG.1.
Rotating Cleaning Header performs one or more 360 degree turns. Number of turns depends on filter's settings.
Cleaning water is supplied by means of high pressure pump.
Other cleaning liquids or solutions can be used as cleaning agent.
As soon cleaning mode is completed, filter returns to service mode.
Claims (12)
The Embodiments Of The Invention In Which An Exclusive Property Or Privilege ls Claimed Are Defined As Follows:
1. A self-cleaning water/fluids filter for filtration of water or another fluids comprising:
- An electric motor direct coupled to gear box;
- A gear box, connected to hollow shaft and supported by mechanical seal assembly housing - A hollow shaft attached to high pressure swivel inlet at one end and rotating cleaning header at opposite end - The mechanical seal housing holding bearing and mechanical seal - The bearing allowing hollow shaft to rotate - The mechanical seal preventing fluid leakage - The rotating cleaning header with a plurality of pressure washing nozzles - A filtration screen installed inside of shell between vessel top and vessel bottom - The shell supported with plurality of legs - An inlet/drain header assembly with plurality of valves - An air release valve installed on the vessel top
- An electric motor direct coupled to gear box;
- A gear box, connected to hollow shaft and supported by mechanical seal assembly housing - A hollow shaft attached to high pressure swivel inlet at one end and rotating cleaning header at opposite end - The mechanical seal housing holding bearing and mechanical seal - The bearing allowing hollow shaft to rotate - The mechanical seal preventing fluid leakage - The rotating cleaning header with a plurality of pressure washing nozzles - A filtration screen installed inside of shell between vessel top and vessel bottom - The shell supported with plurality of legs - An inlet/drain header assembly with plurality of valves - An air release valve installed on the vessel top
2. The hollow shaft recited in claim 1 which has through hole that allows high pressure liquid to go through in order to feed said rotating cleaning header.
3. The rotating cleaning header is spun by means of said hollow shaft.
4. The rotating cleaning header comprises plurality of pressure washing nozzles, that spray and direct high energy fluid on the surface of said filtration screen.
5. The filtration screen is washed in direction of fluid filtration flow.
6. Fluid filtration flow is directed from inside to outside of said filtration screen.
7. The filtration screen is washed by means of fluid under pressure from 500 to 5000 psi
8. The mechanical seal is installed in housing
9. The mechanical seal is fitted on said hollow shaft
10. The high pressure swivel is seated on said hollow shaft
11. The air release valve installed on the vessel top with access to outside of said filtration screen
12. The shell is made of flanged sanitary spool
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2997288A CA2997288A1 (en) | 2018-03-05 | 2018-03-05 | Self cleaning filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2997288A CA2997288A1 (en) | 2018-03-05 | 2018-03-05 | Self cleaning filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2997288A1 true CA2997288A1 (en) | 2019-09-05 |
Family
ID=67841934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2997288A Pending CA2997288A1 (en) | 2018-03-05 | 2018-03-05 | Self cleaning filter |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2997288A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112569730A (en) * | 2020-12-10 | 2021-03-30 | 李丹 | Energy-concerving and environment-protective hydrologic cycle exhaust treatment device |
| CN113331156A (en) * | 2021-05-17 | 2021-09-03 | 薛世豪 | Agricultural integrated pesticide spraying device |
-
2018
- 2018-03-05 CA CA2997288A patent/CA2997288A1/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112569730A (en) * | 2020-12-10 | 2021-03-30 | 李丹 | Energy-concerving and environment-protective hydrologic cycle exhaust treatment device |
| CN113331156A (en) * | 2021-05-17 | 2021-09-03 | 薛世豪 | Agricultural integrated pesticide spraying device |
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