Liquid purification or separation – With repair or assembling means
Patent
1995-07-17
1998-11-10
Savage, Matthew O.
Liquid purification or separation
With repair or assembling means
210440, 210442, 210450, 210453, B01D 3530
Patent
active
058338470
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The filtration of liquids and gases, in industrial, medical and other applications, retains the particular attention of manufacturers of equipment and peripherals because clean liquids and gases increase the performance-quality of machinery, they prolong their usefull life and diminish the cost of maintenance.
Keeping liquids and gases clean will also increase the usefull life of cleaners, coolants, lubricants, etc., and this decreases the volume of used liquids and gases to be retreated and/or to be disposed of.
A great number of patents have been laid down in different fields to define filtration housings, most often limited in use to one particular application (e.g. motor oil filtration such as in patents by Robert Bosch GmbH-EP 0 433 664A1/EP 0 528179A1, or by Herbert Jainek-EP 0 547291A1, or by NTZ Olfiltertechnik GmbH-EP 0 393393A1), or to define improvements and/or manufacturing methods for filtration cartridges for specific applications and/or fineness of filtration Filterwerk Mann & Hummel GmbH-2 448379, Hermann Trabold-WO 92/04960, Roman Semkow-2 550709A1, Filtration SA-2 490969, NTZ Olfiltertechnik GmbH-2 624397, Precision Mechanique Labinal sa-2 570287), various installation schemes (Pall Corporation-2 550709A1), or filtration cartridges of variable size but limited concept to an axial filtration (Charles Sims-WO 91/05596).
The comparative survey during the conception of this invention has recognized some 220 patents in international class BO1D wherein are defined the filtration processes by separation of solid/liquids and solids/gas.
In all these patents the problem of filtration has not been studied in a general form, i.e. the filtration of solids in suspension in a liquid or in a gas, in various filtration applications of oil-based solution, waterbased solutions and gases, taking further into account the variable volumes to be filtered and the various finesses to be achieved.
With the upcome of a more widespread environmental awareness the industries, users and manufacturers have an increased need for a filtration unit which is reliable, adaptable in volume, in fineness and in applications, being economical at the same time.
The installation should be easy and the replacement of the filtration cartridges should be uncomplicated.
All these market-imposed criteria were taken into account during the conception of the filtration units with cartridges described in the present invention, respecting the economical and environmental imperatifs as well.
The concept of the filtration apparatus handles variable volumes in that the filter housing is of a variable capacity which implies the definition and the development of filtration cartridges of variable size.
This development takes into account the various liquids and gases to be filtered which implies the development of adapted filtration materials.
This development takes into account the various applications, fixed or autonomous, which implies the definition and the development of units to be fixed on a machine or in complete autonomy.
This development takes into account the different peripherals for these fited or autonomous operations.
This development takes into account the economical and manufacturing aspects which determine the cost for the end-user, by using an important number of components and sub-assemblies readily available.
SUMMARY OF THE INVENTION
This invention describes a filtration apparatus to be used for the separation of particles in suspension in liquids and in gases, with a variable capacity of volume, with an adaptable fineness of filtration and with specific filtration materials to be integrated in the housing for the filtration of specific liquids or gases.
The filtration of liquids and gases by separation is normally done by using different apparatus for each liquid or gas and for each type of filtration particles in suspension.
The filtration fineness in each application may vary from a normal filtration (to particles of approx. 30 .mu.) to a micro-filtration (to particles of approx. 0.5 .mu.
REFERENCES:
patent: 2525287 (1950-10-01), Cuno
patent: 2554748 (1951-05-01), Lewis et al.
patent: 2559267 (1951-07-01), Winslow et al.
patent: 2620071 (1952-12-01), Zenick
patent: 3306711 (1967-02-01), Wilhelm
patent: 3384241 (1968-05-01), Nostrand
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