Magnetic trap and cleaning means therefor

• US 5,043,063 A
• Filed: 03/21/1990
• Issued: 08/27/1991
• Est. Priority Date: 03/21/1990
• Status: Expired due to Fees

• Current Assignee: Eriez Manufacturing Co.
• Original Assignee: Eriez Manufacturing Co.
• Inventors: Latimer, Michael W.
• Primary Examiner(s): Jones, W. Gary
• Assistant Examiner(s): Savage, Matthew O.
• Application Number:
  US07/496,921
• Time in Patent Office: 524 Days
• Field of Search: 210/222, 210/695, 210/223, 55/100, 55/3, 184/6.25, 335/305, 209/228, 294/65.5
• US Class Current: 210/222
• CPC Class Codes: B03C 1/284 with associated cleaning means, e.g. retractable non-magnetic sleeve
• CPC Class Codes: B03C 1/286 disposed at the inner circumference of a recipient, e.g. magnetic drain bolt
• CPC Class Codes: B03C 1/288 disposed at the outer circumference of a recipient
• CPC Class Codes: B03C 2201/18 Magnetic separation whereby the particles are suspended in a liquid

Abstract

A magnetic trap made up of a hollow, generally cylindrical body, having an open top, an inlet and an outlet for connecting to a flow line for liquid containing entrained removable magnetic material. There is a removable cover for the hollow body, a plate is supported on the cover, and elongated, spaced non-magnetic tubes are fixed to the cover. Elongated stacks of permanent magnets are attached to the plate and extend through the cover into the tubes. When magnetic material held to the tubes by the magnets is to be removed, the cover can be removed from the body, the magnetic stacks can be pulled out of the non-magnetic tubes with the plate, thereby removing the magnetic fields from the tubes so that the magnetic material held to the tubes falls off of the tubes, thereby cleaning the tubes.

Claims

1. In combination, a magnetic trap comprising of a hollow body, a cover, and a magnet assembly,

said hollow body having an open top, a closed bottom, an inlet, an outlet, and side walls,

said cover having a plurality of first spaced holes extending therethrough,

a plurality of non-magnetic tubes having an open upper end and a closure member located at the lower end,

said non-magnetic tubes extending through said cover and attached thereto,

said cover resting on said hollow body so as to cover said open top with said non-magnetic tubes extending downward into said hollow body between said inlet and said outlet,

said magnet assembly comprising a magnet support plate and a plurality of spaced magnet stacks attached to said magnet support plate and extending downward therefrom,

said magnet stacks being spaced to permit extension downward into said non-magnetic tubes,

first releasable fastening means for clamping said cover to said hollow body,

second releasable fastening means for clamping said magnet support plate to said cover, whereby said first releasable fastening means can be released allowing said cover and said magnet support plate to be removed simultaneously from said body with iron material adhering to said non-magnetic tubes,

and said second releasable fastening means can be released allowing said magnet assembly to be removed from said cover to release the iron material from said non-magnetic tubes.

2. The magnetic trap recited in claim 1 wherein said support means for supporting each said magnet stack on said magnet support plate comprises,

second non-magnetic tubes being attached to said magnet support plate,

each said second non-magnetic tube receiving a said magnet stack,

said second non-magnetic tubes with said magnet stacks being spaced to permit extension downward into said first mentioned non-magnetic tubes.

3. The magnetic trap recited in claim 2 wherein said magnet stacks comprises a plurality of solid cylinders of permanent magnetic material.