Liquid purification or separation – Magnetic
Patent
1995-07-12
1998-06-16
Savage, Matthew O.
Liquid purification or separation
Magnetic
210695, C02F 148
Patent
active
057664617
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a process for treating a fluid and furthermore to a device, in particular for magnetic fluid treatment, having at least one multipart housing and at least one permanent magnet which can be mounted on a support body.
In the case of relative motion of fluid molecules in a magnetic field, forces act on the dipoles contained in the fluid, on the ions surrounded by hydrate shells or on other charge carriers and polarizable molecules, which forces lead inside the flowing fluid to relative motion of these magnetically influenceable components with respect to the component which cannot or cannot greatly be influenced magnetically. As a result of these demixing processes and concentration changes internal to the fluid in the case of the different fluid charge carriers, altered physico-chemical properties of the fluids result, in particular a temporally limited altered crystallization behavior of calcium salts. It is known to influence different fluids by magnetic fields, in particular by the action of a plurality of magnetic poles on flowing molecules of fluids, use being made, as a rule, of monobloc housings which exploit the fluid motion relative to stationary, positionally fixed permanent magnets. In order to increase the action, a plurality of housings may, if appropriate, be fastened on a tube, the housing being firmly closed and it being possible to carry out a subsequent alteration of the magnetic influence practically not at all or only with great difficulty, because the housing is intended for a specific, originally fixed, magnet arrangement, overall length and design and is delivered by the producers as a closed device. The joining line of the magnetic poles of the permanent magnets used generally lies in a plane perpendicular to the tube axis. The influence exerted by this type of treatment apparatus over the entire magnetically influenceable fluid is therefore very limited.
Utility model G 91 02 938.4 discloses an apparatus for magnetically influencing a fluid, which has a two-part housing and permits subsequent mounting on an existing pipeline or on a conduit section with low expenditure. The housing halves are intended for holding one or more magnets of the same shape and overall size, so that if, because of the predetermined design of the pipeline, it is not possible to arrange a multiplicity of individual housings directly one after the other, then the fluid composition can be influenced only to a limited extent.
Electrostatic or electromagnetic fluid treaters are furthermore known, which can be matched within wide limits to different fluid compositions by adjusting the applied voltage, the pulse strength and pulse frequency or the current and, as a result of their adjustability, have a wide effective range. A disadvantage is that a high degree of technical outlay is required for the necessary adjustment beside the fact that continuous current supply and maintenance is required and possible interferences in the adjustment cannot be ignored.
The object of the invention is therefore to specify a method and a device which allows user-friendly and optimum matching of the magnetic field to the existing fluid composition within wide limits with only small outlay.
In order to achieve the procedural object, the invention proposes that the fluid is exposed to a magnetic field with the aid of permanent magnets, which magnetic field is altered step-wise with regard to the magnetic field strength and the flow section and or depth influenced, as a function of the fluid composition, as a result of which the existing disadvantages of known embodiments are avoided.
In a refinement of the invention, it is proposed that the fluid is exposed to a magnetic field which has a variable pole number, a variable separation from the fluid and a variable extent with regard to the exposed surface.
In order to implement the process, a device according to the invention is provided which is distinguished in that the housing extends at least partly around the external periphery of the support body and the m
REFERENCES:
patent: 4367143 (1983-01-01), Carpenter
patent: 4585553 (1986-04-01), Hikosaka et al.
patent: 5024271 (1991-06-01), Meihua
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