ES2352992B1 - MODULE FOR FILTRATION MEMBRANES. - Google Patents

Abstract

Module for filtration membranes, formed by a tubular body (2), in which longitudinally tubular filtration membranes (1) are arranged, the membranes (1) being secured by fitting their ends in a plates (13) that are supported at the ends of the tubular body (2), which are positioned by counter-plates (15) that are integral with respective bells (16) for closing the ends of the module, said end fasteners being tied with respect to the tubular body (2) , by means of external screws (19), with which the tightening of the counter-plates (15) on the plates (13) for fastening the filtration membranes (1) is established.

Description

corresponding hole of the solidarity plate

Filtration membrane module.

Technical sector

The present invention relates to the technical scope of the separation of particles that are contained in a liquid, using fi ltration elements.

or of separation by means of fi ltering membranes, proposing a filtration membrane container module carried out with some technical means adapted to advantageously ensure the tightness of said filtration membranes, in an easily assembled and disassembled arrangement.

The object of the invention can be applied in the field of fi ltration, in a general sense, of a fluid-treated medium and, in particular, in nano fi ltration, in ultrafiltration, in micro fi ltration, etc. State of the art

Filtration modules consisting of a tubular body equipped at each end with a plate provided with holes intended for mounting a series of tubular filtration membranes are known in the prior art.

These filtration membranes, which allow substances to be separated according to their physical and chemical qualities, thus extend longitudinally through the interior of the tubular body, being mounted tightly at their ends on the corresponding plates that are joined at the ends of the tubular body.

Under these conditions, the membranes allow the filtration of an application liquid by passing said liquid through them from a circulation inlet through them to an outlet through the side of the tubular body.

In order to ensure the tightness between the terminal parts of the membranes and the end plates of the tubular body, joints are arranged which are pressed by means of a clamping counter-plate, which is attached to the corresponding plate at the end of the body. Tubular with a series of screws.

There are solutions of this type, with a tubular body that locks the filtration membranes and that closes at each end with a bell that establishes the passage of liquid circulation to fi lter towards the membranes, determining the union between the plates that stand in solidarity at the ends of the tubular tubing and the sealing plates of gaskets of the membranes, by means of screws that are covered by said closing bells of the ends of the tubular body, while the fastening of the bells is carried out by means of screws that pass through external peripheral flanges that leave the edge of said bells and the edges of the tubular body

This provision raises the problem that in order to remove the membranes, for cleaning or replacement, it is necessary to remove, first, the hood of the end of the tubular end, and then release it against the plate that presses the joints of the membrane assembly, which implies the need to have to handle a large number of screws, with the inconvenience of time and difficulty that this entails, especially considering that the small filtration rates have to be replaced frequently, due to the dirt that accumulates on them in the fi ltration process. In addition, each end of the tubular body and through the holes of the support plate cannot be accessed in an effective way for maintenance or maintenance manipulations that are necessary inside the tubular body.

Object of the invention

The object of the present invention refers to a module for fi ltration membranes comprising a tubular con fi guration body in which tubular fi ltration membranes are housed longitudinally, determining an assembly consisting of an inlet of the treated liquid and an outlet of the filtered liquid , among which the liquid passes through the membranes, in which particles to be removed from the liquid are retained.

At each end of said tubular body that houses the fi ltration membranes, a false plate is provided with holes for fitting the end, said plate being established against the end of the tubular body, while against it there is a counter-plate that goes attached to a bell, forming a closure assembly of the end of the tubular body, including sealing gaskets that are compressed between said plate and said counter-plate, in relation to the mounting holes of the membranes and around the whole assembly.

The tubular body that handles the fi ltration membranes determines the outer peripheral flange of the ends of its ends, in correspondence with which the end-closing bell of said tubular body determines a complementary flange, establishing the fastening tie of the aforementioned end bell by means of through screws through both flanges, with which the necessary tightening is determined to compress the seals between the plate and the counter-plate counter.

This ensures a homogeneous pressure between the plate and the counter-plate, to compress the seals with adequate pressure to the necessary conditions of a pressure filtration, which guarantees the tightness of the module with perfect operation functionality.

With this arrangement, the removal of the membranes, for cleaning or replacement when necessary, is much easier and faster than with conventional embodiments, since it is only necessary to loosen the clamping screws between the outer flanges of the tubulary body of the closure assembly of a end, so that once the closure assembly has been removed, the membrane clamping plate can be removed without the need to release any more screws; and by removing the membrane clamping plate, all membranes can be removed, leaving the end of the tubular body fully open, with the possibility of access to its interior for any operation that is necessary. Description of the fi gures

The figure represents the exxtured part of a conventional fi ltration module, with one half of the tubular body sectioned.

Figure 2 is an enlarged detail of the zone II indicated in the previous figure.

The figure is a sectional view of the fi ltration module according to the invention.

Figure 4 is an enlarged view of an end part of said module object of the invention.

3 ES2352 992A1 4

Figure 5 is an enlarged detail of the zone V indicated in Figure 3.

Figures 6 and 7 show exploded perspective views of the module of the invention according to two opposing observations. Detailed description of the invention

The object of the invention refers to a fi ltration module of the type formed by a set of fi ltration membranes (1) that are arranged longitudinally inside a tubular body (2), determining a circulation passage between sextreme inlets (3). ) and lateral outlets (4), passing through the membranes (1), for the filtering of a liquid, whose impurities are retained in the mentioned membranes (1).

In the conventional arrangements (Figures 1 and 2), the fi ltration membranes (1) are held by passing through holes of plates (5) that go in solidarity at the ends of the tubular body (2), on which corresponding counter plates are arranged. (6) that are attached to the mentioned plates

(5)

by means of fastening screws (7) between them, arranged in relation to the holes of the plates

(5)

gaskets (8), which are compressed by the tightening of the counter-plates (6) on the plates (5), thus establishing a tight seal on the mounting bracket of the membranes (1); while the ends of the module assembly are closed with bells (9) that are fastened by screws

(10)

through through corresponding outer flanges (11 and 12) that go outwards from the edge of said bells (9) and from the end edges of the tubular body (2).

In the module object of the invention (Figures 3 to 7), the fi ltration membranes (1) are held in the mounting arrangement by means of plates (13) that are arranged at the ends of the tubular body (2) and which are provided with holes (14) in which the ends of the membranes (1) fit, so that said plates (13) are simply supported on the respective ends of the tubular body (2), being held in that position by corresponding counter-plates (15) that press against them.

The counter plates (15) go to a respective bells (16) closing the ends of the module, determining the set of each bell

(16) and the respective counter-plate (15) an outer peripheral flange (17), while the tubular body (2) has an outer peripheral flange (18), so that the fastening of the assembly of each bell (16) and counter-plate ( 15) respectively, it is fastened in the mounting on the tubular body (2) by screws (19) that are included through the flanges (17 and 18).

In this mode, the pressure against the plates (15) exerts on the plates (13), ensures the fastening of the membranes (1), with only the tightening of the screws

(19) of mooring between the outer flanges (17 and 18), without the need for mooring screws between the plates (13) and the counter-plates (15), thus obtaining an arrangement that allows the disassembly of the membranes (1) only by loosening the screws exterior (19), with which the assembly formed by the bell (16) and counter-plate (15) can be removed, as well as the respective plate (13), allowing the extraction of the membranes (1). When removing the membranes (1) in these conditions, the end of the tubular body body (2) is completely open, allowing easy access to the interior for any operation that is necessary.

In relation to the mouths of the holes

(14)

for fitting the ends of the membranes (1) on the plates (13), sealing gaskets (20) are arranged and another sealing gasket (21) is attached between the flanges (17 and 18), so that these Sealing joints (20 and 21) are compressed in the tightening of the counter-plates (15) on the respective plates (13), whereby a perfectly tight seal of the assembly of the module's end seals is obtained, only with the tightening of the external tie-down screws (19), without the need for other tie-down screws between the plates (13) and the counter-plates (15) such as those provided by conventional solutions.

Between the flanges (17 and 18) of mooring end seals of the module there is at least one rod

(22)

in guiding functions, by means of which the relative positioning of these flanges (17 and 18) is determined so that the holes of the same, through which the mooring screws (19) have to pass, are faced, thus facilitating the operation of the assembly of said closures module ends.

And in the constructive embodiment, the tubular body (2) and the closing bells (16) of the module ends, can be made of synthetic fi rms or stainless steel, without altering the concept of the invention.

5 ES2352 992A1 6

Claims (5)

1. Module for filtration membranes, of the type comprising a tubular body (2), inside which longitudinally arranged tubular membranes (1) are arranged, through which the flow passage of a liquid to be filtered is established , characterized in that the mounting of the fi ltration membranes (1) is established by fitting the ends thereof with respect to plates (13) that is supported in the end of the tubular body (2) and which are pressed by corresponding counter-plates (15) in solidarity with respective bells (16), in a way that the set of each bell (16) and the counter-plate (15) integral with it, determines an outer peripheral flange (17), to through which fastening tie is established by screws (19) with respect to a corresponding outer flange (18) of the end edge of the tubular body (2), being established only with the tightening of said screws (19) located on the outer part of a counter-plate tightening (15) on the plates (13) for fastening the membranes (1) of fi ltration in the assembly.

2.

Module for filtration membranes, according to the first claim, characterized in that the plates (13) in which the ends of the filtration membranes (1) fit are arranged resting on the ends of the tubular body (2) with the possibility of extraction .

3.

Module for filtration membranes, according to the first claim, characterized in that between the outer flanges (17 and 18) of fastening the end seals of the module a gasket is included

(21) which ensures a tightness around the assembly assembly of the filtration membranes (1). 4. Module for filtration membranes, according to the first claim, characterized in that at least one rod is disposed between the flanges (17 and 18) for fastening the end seals of the module (22) of guidance, by which the relative angular positioning of said flanges (17 and 18) is determined for mounting the closure. SPANISH OFFICE OF THE PATENTS AND BRAND Application no .: 200802893 SPAIN Date of submission of the application: 14.10.2008 Priority Date: REPORT ON THE STATE OF THE TECHNIQUE 51 Int. Cl.: See Additional Sheet RELEVANT DOCUMENTS

Category

Documents cited Claims Affected

X

FR 2854820 A1 (ITN NANOVATION GMBH) 19.11.2004, summary; figure 2. 1-3

X

WO 03028865 A1 (KUBOTA KK et al.) 10.04.2003 & Summary of the EPODOC database. 1.2

Recovered from EPOQUE; AN JP-0209814-W; Figures 2-3.

X

JP 2003170028 A (KUBOTA KK) 06.17.2003 & Summary of the EPODOC database. 1.2

Recovered from EPOQUE; AN JP-2002267471-A; Figures 2-3.

X

JP 2004081943 A (KUBOTA KK) 18.03.2004 & Summary of the EPODOC database. one

Recovered from EPOQUE; AN JP-2002244421-A; Figures 4-8.

Category of the documents cited X: of particular relevance Y: of particular relevance combined with other / s of the same category A: reflects the state of the art O: refers to unwritten disclosure P: published between the priority date and the date of priority submission of the application E: previous document, but published after the date of submission of the application

This report has been prepared • for all claims □ for claims no:

Date of realization of the report 07.02.2011

Examiner D. Herrera Alados Page 1/4

REPORT OF THE STATE OF THE TECHNIQUE Application number: 200802893 CLASSIFICATION OBJECT OF THE APPLICATION B01D63 / 06 (01.01.2006) B01D25 / 02 (01.01.2006) B01D29 / 13 (01.01.2006) Minimum documentation sought (classification system followed by classification symbols) B01D Electronic databases consulted during the search (name of the database and, if possible, terms of search used) INVENTIONS, EPODOC State of the Art Report Page 2/4  WRITTEN OPINION Application number: 200802893 Date of Written Opinion: 07.02.2011 Statement

Novelty (Art. 6.1 LP 11/1986)

Claims Claims 1-4 IF NOT

Inventive activity (Art. 8.1 LP11 / 1986)

Claims Claims 4 1-3 IF NOT

The application is considered to comply with the industrial application requirement. This requirement was evaluated during the formal and technical examination phase of the application (Article 31.2 Law 11/1986).  Opinion Base.- This opinion has been made on the basis of the patent application as published. State of the Art Report Page 3/4  WRITTEN OPINION Application number: 200802893 1. Documents considered.- The documents belonging to the state of the art taken into consideration for the realization of this opinion are listed below.

Document

Publication or Identification Number publication date

D01

FR 2854820 A1 (ITN NANOVATION GMBH) 19.11.2004

2. Statement motivated according to articles 29.6 and 29.7 of the Regulations for the execution of Law 11/1986, of March 20, on Patents on novelty and inventive activity; quotes and explanations in support of this statement The technical object of the invention is a module for filtration membranes, of the type comprising a tubular body inside which tubular filtration membranes are arranged longitudinally that fit at their ends in plates that rest on the ends of the tubular body through of a counter plate solidarity to the bells. Said counter plate forms a flange which will be connected by screws to another flange that is integral with the tubular body. The tightening of said outer screws will establish the fastening of the filtration membranes. Document D01, considered the closest to the state of the art, discloses a sealing system for a ceramic filter which comprises a tubular body inside which tubular filtration membranes are arranged longitudinally that fit at their ends in plates that are they rest on the ends of the tubular body through a counter plate integral to the bells. The fitting is made through an elastic joint that in turn fits into a recess made in the support plate. The counter plate forms a flange which will be connected by screws to another flange that is integral to the tubular body (see summary and figure 2). The difference in the technical object of claim 1 with respect to document D01 is only that the characteristic of the seal has been omitted. Apart from the obvious and consequently simpler design of the claimed technical object, the only result of the omission of the joint is that the effects related to said joint have disappeared in the object of claim 1. This simplification does not imply inventive activity (Art. 8 of the LP11 / 86). The characteristics of dependent claims 2 and 3 have already been disclosed in document D01, therefore they lack inventive activity (Art. 8 of LP11 / 86). State of the Art Report Page 4/4