Magnetic particle filtration apparatus

• US 7,410,574 B2
• Filed: 09/02/2005
• Issued: 08/12/2008
• Est. Priority Date: 03/03/2004
• Status: Expired due to Fees

• Current Assignee: Patent Innovations LLC
• Original Assignee: Patent Innovations LLC
• Inventors: Hammond, John M.
• Primary Examiner(s): Fortuna; Ana M
• Application Number:
  US11/219,222
• Publication Number:
  US 20080017564A1
• Time in Patent Office: 1,075 Days
• Field of Search: 210/222, 210/252.7, 210/195.2, 210/416.1, 210/323.2, 2103216-3219, 210/650, 210/767
• US Class Current: 210/222
• CPC Class Codes: B01D 35/06 Filters making use of electricity or magnetism ultrafiltration, microfiltration B01D61/14; electrodialysis, electro-osmosis B01D61/42; devices comprising filters and magnetic separators B03C1/30
• CPC Class Codes: B03C 1/286 disposed at the inner circumference of a recipient, e.g. magnetic drain bolt
• CPC Class Codes: B03C 2201/18 Magnetic separation whereby the particles are suspended in a liquid

Abstract

An apparatus for separating magnetic particles from a fluid, the apparatus comprising a tubular housing comprising an interior surface, an exterior surface, a first inlet port, a first outlet port, a second outlet port, and a channel; a tubular filter medium disposed within the tubular housing and comprising an inner surface and an outer surface, the filter medium partitioning the channel into a first passageway between the first inlet port of the tubular housing and the second outlet port of the tubular housing, and a second passageway in communication with the first outlet port of the tubular housing; and a wire coil wound around the exterior surface of the tubular housing, the wire coil comprising a first lead and a second lead. In operation, the wire coil is connected to a direct current power supply to effect enhanced separation of magnetic particles from a flowing fluid stream.

Claims

1. An apparatus for separating magnetic particles from a fluid, said apparatus comprising:

a) a tubular housing comprising an interior surface, an exterior surface, a first inlet port, a first outlet port, a second outlet port, and a channel;

b) a tubular filter medium disposed within said tubular housing and comprising an inner surface and an outer surface, said filter medium partitioning said channel into a first passageway between said first inlet port of said tubular housing and said second outlet port of said tubular housing, and a second passageway in communication with said first outlet port of said tubular housing; and

c) a wire coil wound around said exterior surface of said tubular housing, said wire coil comprising a first lead and a second lead.

2. The apparatus as recited in claim 1, wherein said first passageway is formed within said inner surface of said tubular filter medium, and said second passageway is formed between said outer surface of said tubular filter medium and said interior surface of said tubular housing.

3. The apparatus as recited in claim 1, wherein said first passageway is formed between said outer surface of said tubular filter medium and said interior surface of said tubular housing, and said second passageway is formed within said inner surface of said tubular filter medium.

4. The apparatus as recited in claim 1, wherein said tubular filter medium disposed within said tubular housing is coaxial with said tubular housing.

5. The apparatus as recited in claim 4, wherein a first O-ring is disposed between said outer surface of said tubular filter medium and said interior surface of said tubular housing, and a second O-ring is disposed between said outer surface of said tubular filter medium and said interior surface of said tubular housing.

6. The apparatus as recited in claim 4, wherein said tubular filter medium comprises a first end comprising a first flare, and a second end comprising a second flare, and wherein each of said first flare and said second flare are in contact with said interior surface of said tubular housing.

7. The apparatus as recited in claim 1, wherein said apparatus further comprises an electrical power supply connected to said first lead and said second lead of said wire coil.

8. The apparatus as recited in claim 7, wherein said electrical power supply is adapted to provide either direct current or alternating current.

9. The apparatus as recited in claim 1 wherein said tubular filter medium is comprised of a magnetic material.

10. The apparatus as recited in claim 9, wherein said magnetic material is selected from the group consisting of iron, carbon steel, aluminum-nickel-cobalt alloy, samarium-cobalt alloy, and 400-series stainless steel.

11. The apparatus as recited in claim 10, wherein said tubular filter medium consists essentially of 400-series sintered stainless steel.

12. An apparatus for separating magnetic particles from a fluid, said apparatus comprising:

a) a tubular housing comprising an interior surface, an exterior surface, a first inlet port, a first outlet port, a second outlet port, and a channel;

b) a tubular filter medium disposed within said tubular housing and comprising an inner surface and an outer surface, said filter medium partitioning said channel into a first passageway formed between said outer surface of said tubular filter medium and said interior surface of said tubular housing and in communication with said first inlet port of said tubular housing and said second outlet port of said tubular housing, and a second passageway formed within said inner surface of said tubular filter medium in communication with said first outlet port of said tubular housing; and

c) a wire coil wound around said exterior surface of said tubular housing, said wire coil comprising a first lead and a second lead.

13. The apparatus as recited in claim 12, wherein said tubular filter medium disposed within said tubular housing is coaxial with said tubular housing.

14. The apparatus as recited in claim 13, wherein a first O-ring is disposed between said outer surface of said tubular filter medium and said interior surface of said tubular housing, and a second O-ring is disposed between said outer surface of said tubular filter medium and said interior surface of said tubular housing.

15. The apparatus as recited in claim 13, wherein said tubular filter medium comprises a first end comprising a first flare, and a second end comprising a second flare, and wherein each of said first flare and said second flare are in contact with said interior surface of said tubular housing.

16. The apparatus as recited in claim 12, wherein said apparatus further comprises an electrical power supply connected to said first lead and said second lead of said wire coil.

17. The apparatus as recited in claim 16, wherein said electrical power supply is adapted to provide either direct current or alternating current.

18. The apparatus as recited in claim 12, wherein said tubular filter medium is comprised of a magnetic material.

19. The apparatus as recited in claim 18, wherein said magnetic material is selected from the group consisting of iron, carbon steel, aluminum-nickel-cobalt alloy, samarium-cobalt alloy, and 400-series stainless steel.

20. The apparatus as recited in claim 19, wherein said tubular filter medium consists essentially of 400-series sintered stainless steel.