GB2128414A

GB2128414A - Device for magnetic treatment of a fluid, particularly for water decalcification

Info

Publication number: GB2128414A
Application number: GB08320916A
Authority: GB
Inventors: Vecchi Giuseppe De
Original assignee: Individual
Current assignee: Individual
Priority date: 1982-09-24
Filing date: 1983-08-03
Publication date: 1984-04-26
Also published as: GB8320916D0; DE3333551A1; IT1152642B; IT8223444A0

Abstract

A multipolar permanent magnet (1) in the shape of an elongate rod is housed inside an envelope (2) of non- magnetic material e.g. Cu in its turn positioned at a prefixed radial distance inside a magnetic material casing (10). Between the non-magnetic envelope (2) and the magnetic casing (10) there is defined an elongate annular chamber (11), through which the fluid to be treated passes. Rings of magnetic material (5) e.g. magnetite, are fixed to the outer wall of said envelope (2), at the magnet poles, so as to concentrate and amplify the magnetic flux in the crossing areas of the abovementioned chamber (11). <IMAGE>

Description

SPECIFICATION Device for magnetic treatment of a fluid, particularly for water decalcification The invention relates to a device for magnetic treatment of a fluid, particularly for water decalcification.

Such devices are known with which fluid to be treated passes through a magnetic field capable of modifying its characteristics. In the case of water, for example, the magnetic field allows calcium and other minerals present in the water to form a suspension which is easily removable through an exhaust valve.

The abovementioned known devices generally comprise a multipolar permanent magnet in the shape of an elongated cylindrical rod which is housed inside an envelope of non-magnetic material (for example copper) in its turn positioned at a suitable radial distance inside a casing of magnetic material (for example iron). Between the non-magnetic envelope and the magnetic casing there is thus defined an elongated annular chamber, which is intersected by the magnetic fluxes produced by the permanent magnet (and closing around in the outer magnetic casing) and is axially passed through by fluid (water or other fluid) under treatment. The crossing of said magnetic fluxes evidently gives rise to the required magnetic treatment of the fluid.

An object of the present invention is to provide a novel device of the abovementioned kind, having improved operative efficiency.

According to the invention therefore there is provided a device, comprising a multipolar permanent magnet in the shape of an elongated rod, an envelope of non-magnetic material fitted on said magnet and an outer casing of magnetic material situated around said envelope at a prefixed radial distance, so that between said envelope and said outer casing there is defined an elongated annular chamber arranged to be axially passed through by the fluid under treatment, characterised in that rings of magnetic material are fixed to the outer wall of said envelope at the magnet poles.

In other words, a device of the known general kind is modified through the addition of rings of magnetic material, which allows concentration and amplification of the magnetic flux at the poles of the magnet, where the flux is already of greater intensity and there supplement the passing through of the treatment chamber by the same flux. Thus the efficiency of the device is improved and the fluid is submitted to a more intensive treatment giving rise to more significant effects on the treated fluid.

This and other characteristics of the present invention will be made evident by the following detailed description of an embodiment illustrated by way of example in the enclosed drawings in which: Fig. 1 shows the device in partial longitudinal section; Fig. 2 shows the device in transverse section along line Il-Il of Fig. 1; Fig. 3 shows the device in transverse section along line Ill-Ill of Fig. 1.

The device illustrated in the drawings comprises as a basic element a multipolar permanent magnet 1 realised in the shape of an elongated cylindrical rod. This is constituted by three magnet sections each having two poles disposed with alternated polar orientation, as shown in Fig. 1 (N indicates the North Pole and S the South Pole).

On the magnet 1 there is tightly fixed a cylindrical envelope of non-magnetic material 2 (for example copper), which extends at the ends beyond said magnet so as to form two cavities 3 axially open outwards and provided with respective pluralities of circumferentially spaced cylindrical holes 4 for communication with the space which surrounds the envelope 2. Besides, this latter is also outwardly provided with rings of magnetic material 5 (for example segments of magnetite held together in solid form by means of suitable adhesive) which are fixed to the outer wall of the abovementioned envelope at the poles of the magnet 1. A collar 6 is finally fixed on one end of the envelope 2, while on the other end there is fixed a double collar 7, 8 with an intermediate step 9.

Around the envelope 2 and on the collars 6 and 7 (where a little clearance is provided) there is positioned an outer casing of magnetic material 10 (for example, iron), which in combination with the abovementioned envelope 2 defines an elongated annular chamber 11, which communicates at the ends, through the pluralities of holes 4, with the two end chambers 3 of the envelope 2.

Axial blocking of the described assembly is ensured by two hexagonal end connectors 12 screwed on the threaded ends 13 of the casing 10. The blocking is such that the casing 10 abuts, on one hand, against an inner shoulder 14 of one of the two connectors and, on the other hand, against the connection step 9 placed between the collars 7 and 8, so as to push and block this latter against an inner shoulder 1 5 of the other connector.

As seen in Fig. 1, the two connectors 12 are passed through by inner passages 16 in communication with the end cavities 3 of the envelope 2 which in its turn communicates through the hole 4 and the annular chamber 11.

There is thus defined a passage from one connector to the other, which is used as a .passageway for the fluid to be treated.

More precisely, the fluid fed to one of the axial passages 16 firstly passes in the respective cavity 3 and then in the annular chamber 11, being submitted by the holes 4 to a venturi effect which increases the speed in the chamber 11. This latter is the true treatment chamber, that is, passing through it, the fluid meets the magnetic fluxes which are produced by the different sections of the magnet 1 and close around in the outer magnetic casing 10. Said magnetic fluxes, suitably concentrated and amplified at the magnetic rings 5, carry out the treatment of the fluid, which then goes out of the device by passing through the outer holes 4, the other cavity 3 and the other axial passage 16.

Claims

1. A device for magnetic treatment of a fluid, particularly for water decalcification, comprising a multipolar permanent magnet in the shape of an elongated rod, an envelope of non-magnetic material fitted on said magnet and an outer casing of magnetic material situated around said envelope at a prefixed radial distance, so that between said envelope and said outer casing is defined an elongated annular chamber arranged to be axially passed through by the fluid under treatment, characterised in that rings of magnetic material are fixed to the outer wall of said envelope at the magnet poles.

2. A device according to claim 1, characterised in that said envelope extends at the ends beyond said magnet so as to form two end cavities axially open outwards and provided with respective pluralities of circumferentially spaced cylindrical holes for communication with said annular chamber.

3. A device according to claim 2, characterised in that on said ends of the casing there are fixed respective collars for the radial positioning of said outer casing, to one of said collars there being associated a further collar of greater diameter which forms with the first one a step against which the corresponding end of said casing abuts, there being provided end connectors screwed on the ends of said casing so that this latter is blocked in axial direction and at the same time keeps said further collar of the envelope against an inner shoulder of the respective end connector for the axial blocking of the abovementioned envelope.

4. A device according to claim 3, characterised in that said end connectors are passed through by axial inner passages communicating with said end cavities of said envelope.

5. A device according to claim 1, characterised in that said rings of magnetic material are formed by segments of magnetite held in solid form with adhesive.

6. A device substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.