US 7,094,344 B2 · Filter device

Abstract

The present invention relates to a filter device for removing impurities contained in liquid. A filter housing 18 is provided with a container for accommodating a filter bag 2 therein, a deposit recovery tank 3 for recovering a deposit and a floating material recovery tank 4 for recovering a floating material. Thus, it is possible to prevent any deterioration of filtration performance caused by filtered and separated impurities, and to achieve both of filtration and specific gravity difference separation by a single device.

Drawings

Claims11

Dependent claims

A filter device comprising:

a filter for filtering liquid to be filtered and separating impurity particles contained in the liquid to be filtered;
and
a deposit recovery tank for depositing particles having a specific gravity greater than that of the liquid to be filtered out of the impurity particles, which are not filtered but separated by the filter, so as to recover them at a position apart from the filter,
the filter being a bag-like filter bag, the filter being disposed with an opening end thereof oriented downward at a time of installation, and
an opening end seal formed into a substantially cylindrical shape having expansibility and contractility, one end of the seal being supported on a side of a case while the other end of the seal being brought into contact with the opening end of the filter bag.

2 more elements

Dependencies are inferred from the claim text.

Description9,010 words

Summary1,371 words

#1. Field of the Invention

#The present invention relates to a filter device for removing impurities contained in liquid, and so on.

#2. Description of the Related Art

Brief description of the drawings20 figures

#FIG. 1 is a cross-sectional view schematically showing the configuration of a filter device in an embodiment according to the present invention;

#FIG. 2 shows a modification of FIG. 1;

#FIG. 3 is a diagram illustrating the flow of a filter system in a first example, to which the filter device according to the embodiment of the present invention is applied;

Detailed description7,205 words

#Preferred embodiments according to the present invention will be illustratively described below in reference to the accompanying drawings. Incidentally, the dimension, material, shape, relative arrangement and the like of constituent parts described in the embodiments are not limited to them with respect to the scope of the invention unless there are specified descriptions.

#Referring to FIG. 1, explanation will be made on a filter device according to a first embodiment of the present invention. FIG. 1 is a cross-sectional view schematically showing the configuration of the filter device according to the first embodiment of the present invention.

#As shown in FIG. 1, a filter housing 18 in a filter device 1 in the present embodiment comprises a container for accommodating a filter bag (a bag-like filter) 2, a deposit recovery tank 3 for recovering a deposit and a floating material recovery tank 4 for recovering a floating material.

Facts

Application

10/713,157Filed 17 Nov 2003

Published

US 2005/0103700 A119 May 2005

Granted

22 Aug 2006

Term ended

2 Aug 2024

Estimated · how

20 years from earliest known nonprovisional domestic filing plus recorded patent term adjustment, including 259 days of adjustment. Maintenance-fee lapses, terminal disclaimers and statutory extensions have not been checked. The continuity chain may be incomplete; this is not an enforceability determination.

Classification9 codes

B01D 29/23
Supported filter elements: arranged for outward flow filtration
B01D 17/0214
By sedimentation: with removal of one of the phases
B01D 17/045
Breaking emulsions: with coalescers
B01D 17/085
Thickening liquid suspensions by filtration: with membranes

Filter device

Life of this patent

Filter device

Life of this patent

Life of this patent

Abstract

Drawings

Drawings

Claims11

Description9,010 words

Drawings

Classification9 codes

Life of this patent

Description9,010 words