Filtration device
The present invention relates to a filtration device being adapted for continuous vibration and pressure driven filtration. Said filtration device comprises a filter module which comprises at least one tubular semipermeable membrane element, said module further comprises a drain area for permeate, an outlet for permeate, an inlet for feed fluid and an outlet for retentate; said module further comprises one or more flexible volume chambers being filled with gas and in close contact with but separated from the internal module of the filter module through a flexible wall; said filtration device comprises a vibration motor being adapted to provide a vibrating motion to the device.
1 . A filtration device, comprising:
a filter module adapted for filtration of media, the filter module comprising one or more tubular membrane elements, the filter module comprising two gas-filled flexible volume chambers positioned at ends of the filter module, each of the two gas-filled flexible volume chambers providing a cushioning effect on the media in response to external vibration applied to the filter module, the filter module comprising at least one inlet for media to be filtered and at least one retentate outlet for retentate, the at least one inlet and the at least one retentate outlet being positioned at the ends of the filter module, the filter module comprising at least one semipermeable tubular membrane forming a path between the inlet and the retentate outlet, the at least one semipermeable tubular membrane being associated with one of the tubular membrane elements and forming a semipermeable wall separating the retentate from a drain area, the drain area comprising a permeate outlet.
2 . The filtration device according to claim 1 , wherein each of the gas-filled flexible volume chambers comprises (i) a flexible gasket adapted to separate a gas volume of the flexible volume chambers from a remainder of the filter module, and (ii) rigid walls coupled to the flexible gasket.
3 . The filtration device according to claim 1 , wherein the semipermeable tubular membrane is formed on an inside or an outside of the tubular membrane element.
4 . The filtration device according to claim 1 , wherein the tubular membrane element has a round or square cross section.
5 . The filtration device according to claim 1 , wherein the semipermeable tubular membrane is formed on an inside of one or more tubular cavities in the tubular membrane elements.
6 . The filtration device according to claim 1 , wherein the flexible volume chambers can be connected to a gas pressure source for increasing or decreasing volume of the flexible volume chambers.
7 . The filtration device according to claim 1 , wherein the two gas-filled flexible volume chambers are positioned at opposing ends of the filter module.
8 . The filtration device according to claim 7 , wherein the at least one inlet and the at least one retentate outlet are located within the filter module between the two gas-filled flexible volume chambers.
9 . The filtration device according to claim 8 , wherein a first one of the two flexible volume chambers is adjacent to the at least one inlet and a second one of the two gas-filled flexible volume chambers is adjacent to the at least one retentate outlet.
10 . The filtration device according to claim 8 , further including an inlet chamber that leads to the at least one inlet and an outlet chamber that leads to the at least one retentate outlet, wherein a first one of the two gas-filled flexible volume chambers is directly adjacent to the inlet chamber and a second one of the two gas-filled flexible volume chambers is directly adjacent to the outlet chamber.
11 . The filtration device according to claim 10 , wherein the first one of the two gas-filled flexible volume chambers is separated from the inlet chamber by a first flexible membrane that forms part of the first one of the two gas-filled flexible volume chambers, and wherein the second one of the two gas-filled flexible volume chambers is separated from the outlet chamber by a second flexible membrane that forms part of the second one of the two gas-filled flexible volume chambers.
12 . The filtration device according to claim 1 , further comprising at least one additional filter module, the filter modules being connected to one or more vibration motors.
13 . The filtration device according to claim 1 , further comprising a vibration motor, the vibration motor being connected to the filter module and configured to vibrate the filter module, wherein during operation of the vibration motor, one part of the media is concentrated in the filter module and discharged from the retentate outlet at the end of the operation or intermittently.
14 . The filtration device according to claim 13 , wherein the vibration action assists in cleaning the semipermeable membrane filter during operation.
15 . The filtration device according to claim 13 , wherein the filter device continuously separates media entering the device through at least one inlet, the media having a high solids content, a high viscosity, or requiring a high sanitary demand.
16 . The filtration device according to claim 13 , wherein the filter device is for concentrating or separating entities in solution such as polypeptides, enzymes, proteins, yeast, or cells in a liquid and/or a combination thereof in a permeate phase exiting the device through the permeate outlet and a retentate phase exiting the device through the at least one retentate outlet.
17 . A filtration device, comprising:
a filter module adapted for pressure and vibration-driven filtration of media, the filter module comprises one or more tubular membrane elements, two or more gas-filled flexible volume chambers each positioned at one end of the filter module, at least one inlet for media to be filtered, and at least one retentate outlet for retentate, the inlet and retentate outlet being positioned at distal ends of the filter module and proximal to the flexible volume chambers, the filter module further including at least one semipermeable tubular membrane associated with one of tubular membrane elements that forms a path between the inlet and retentate outlet, the one semipermeable tubular membrane forming a semipermeable wall separating the retentate from a drain area, the drain area comprising a permeate outlet;
a vibration motor having a receptacle for mounting the filter module, the vibration motor being adapted to provide a vibrating motion to the filter module, the flexible volume chambers having at least one flexible chamber wall in contact with the retentate flow and being adapted to expand and/or compress their volumes to allow the retentate to undergo a back-and-forth movement relative to a surface the semipermeable membrane in response to the vibrating motion.
18 . The filtration device according to claim 17 , wherein the vibration motor is adapted to provide vibrating motion of a linear nature.
19 . The filtration device according to claim 17 , where the vibration motor provides vibration motion to the filter module through an eccentric axis.
20 . A filtration device, comprising:
a filter module being adapted for continuous pressure and vibration driven filtration of media, the filter module comprising a retentate channel, two or more flexible volume chambers each positioned at an end of the retentate channel, at least one inlet for media to be filtered, and at least one retentate outlet for retentate, the at least one inlet and the at least one retentate outlet being positioned at distal ends of the filter module and proximal to the flexible volume chambers, the filter module further including at least one semipermeable tubular membrane located between the at least one inlet and the at least one retentate outlet and forming a semipermeable wall separating the retentate from a drain area, the drain area comprising a permeate outlet; and
a vibration motor having a receptacle for mounting the filter module, the vibration motor being adapted to provide a vibrating motion to the filter module, the flexible volume chambers having at least one flexible chamber wall in contact with the retentate flow and being adapted to expand and/or compress their volumes to allow the retentate to undergo a back-and-forth movement relative to a surface the semipermeable membrane in response to the vibrating motion.