JPH08968A - Deposited permeable membrane assembly for fluid fractionation and permeable membrane seal collar for fluid distribution - Google Patents

Abstract

PURPOSE: To provide an accumulated envelope construction of permeable membranes for separating a fluid and to provide a collar for distributing a fluid and for sealing the permeable membranes. CONSTITUTION: The isolated envelope construction of permeable membranes 1 which have two clamp boards 2, 4 is prepared by clamping the construction between the clamp boards on a flame 34. Each of membrane envelopes 30, 31, 32, 33 is covered with clamped two sheets of membranes 74, 76, contains bored plates, and equipped with an inner permeate chamber 48 and outer passages of supply fluids 62, 64. The collars 78, 80 for fluid distribution and for seal of the permeable membranes comprise two sheets of annular boards, and are equipped with a channel separator ring, which is radially shell-shaped, of stiff spring form. The annular boards seal the membranes against a platelike board around passages of supply fluids passing the envelope construction. At the same time, a passage is formed by the radial shell body, and the fluids are flown between the adjacent membrane envelopes.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates to a deposited permeable membrane envelope assembly for fractionating fluids and a collar for distributing fluids and sealing permeable membranes.

[0002]

BACKGROUND OF THE INVENTION Dialysis, especially for blood purification, which includes an assembly of flat support plates deposited with a pair of membranes interposed between adjacent sides. Providing a device is described in U.S. Pat. No. 3,8, Sep. 24, 1974 by Oh Hagstrom and Gie Ride.
It has already been proposed in 37,496. These membranes form passages between the membranes for the liquid to be purified, and other passages are formed between each plate and the adjacent membrane for circulating the liquid to be purified. The support plate and membrane pair assembly is traversed by tubular axes for the liquid to be purified, which axes include distribution discs that clamp the membranes of each pair to an adjacent support plate.

In membrane fractionation of fluids, by far the highest flow rate is the flow rate of the liquid to be purified, and while the Hagstrom and Riede apparatus is useful, circulating the liquid to be purified between each plate and adjacent membranes It reduces the space available for this purpose. Moreover, the Hagstrom and Riede distribution disks do not provide sufficient fluid passages, which creates back pressure problems during deposition.

An apparatus for fractionating a liquid into two fractions by reverse osmosis or ultrafiltration, comprising alternating depositions of membranes and membrane support plates, the depositions penetrating the depositions.
Providing a device having two spaced fluid holes is disclosed in US Pat. No. 4,666,603, May 19, 1987, to Earl Madson et al., And March 1, 1975.
It was proposed in the above-mentioned No. 3,872,015 dated 8.
Since one of the fluid holes is the inlet and the other is the outlet,
Fluid flows parallel to the membrane surface from the inlet to the outlet.

The Madson et al. Device is useful in that it provides more space for the flow of the feed fluid, but has many features that do not fully utilize the deposition space. I) the membrane support plate is rigid and provides permeate flow paths with flutes in its surface or pores in the filter paper on each side thereof, and ii) the membrane support The plates have curved ribs that press adjacent membranes together into a narrow area, along which the feed fluid flows so that the flow cross-section is narrow and the membranes are pressed together by the ridges. Limiting the direction of flow with the excessively large permeable surface area of the membrane lost in position.

[0006] The feed fluid has a sufficient and unrestricted flow path that is independent of the nature of the fluid fractionated between the membrane envelopes, and the support plate within the membrane envelope provides a sufficient escape path for the permeate from the membrane. There is a need for a deposited membrane envelope that sorts the fluid that provides the.

Madson et al. Provide a sealing ring that holds the membrane and filter paper to their support plates on the clamp bolts or in the flow channels. When the seal ring is around the clamp bolt, the seal ring has a larger lumen than the bolt and provides a flow path thereabout. The seal ring has protrusions to hold the seal ring apart for the flow of feed fluid between the membranes.

While these seal rings are useful, there is a risk that the seal ring will only sufficiently seal at the location where the protrusion exerts pressure, and the flow path created by the protrusion is too narrow.

There is also a need for a fluid distribution and sealing collar for a fluid permeable membrane that completely seals the membrane around the collar and provides some unrestricted radial flow from the collar to the membrane.

[0010]

SUMMARY OF THE INVENTION In accordance with the present invention, a fluid permeable deposited membrane assembly is provided which comprises: a) two facing surfaces of each plate and a spaced surface-to-face relationship. A clamp rim for defining a feed fluid recess having an inlet fill recess at an opposing first end and an outlet fill recess at an opposing second end, and an inlet fill recess for one plate. Two clamp plates having a feed inlet port to the other plate and a feed fluid outlet port from the outlet filling recess of the other plate; and (b) a stack of spaced permeable membrane envelopes between the plates, An envelope having: i) a frame shaped to extend between the seal rims, the frame having a permeate exit device extending through the frame from its interior; and ii) a pair of limited flexible seals sealed to the frame. Flexible membrane A support plate, wherein a pair of support plates is shaped to provide an intermediate, spaced-apart fluid permeable plate portion within the frame, the plate portion forming an inward permeate cavity therebetween;
Forming an outer feed fluid recess in communication with the permeate outlet device and aligned therewith in the plate, adjacent plate portions at each end having feed fluid passageways therethrough and with them in the plate. A pair of restricted flexible membrane support plates that form aligned filled recesses and the supply fluid passages are aligned with the mouths in the clamp plate; and iii) a fluid permeable membrane for each support plate. A fluid permeable membrane covering the outer side of the spacer plate and having a feed fluid passage aligned with the fluid passage in the support plate; and c) a plurality of permeable membrane envelopes; Membrane envelope spacer color of
Each spacer collar has an outwardly extending fluid passageway around which each spacer collar surrounds the rim of each membrane around each fluid passageway therein in a rigid spring-like manner. Configured to compress against a supported support plate,
Spacer collars are: i) facing fill recesses of the support plate in and adjacent to the support plate such that these spacer collars partition the fluid passages between the clamp plate mouth and the support plate fluid passages. And ii) a plurality of membrane envelope spacer collars that produce compression in the facing fill recesses between the support plates so that these spacer collars define fluid passages extending between the fluid passages in the support plates. D) The clamp plates and the stack of envelopes between them are clamped in a fluid-tight manner so that the spacer collars engage each said marginal portion of the membrane in a fluid-tight engagement with a support plate covered thereby. And a device for clamping, and a deposited permeable membrane assembly for fractionating a fluid comprising a device for clamping.

In some embodiments of the invention, a support device may be provided to non-collapsibly support each membrane support plate into the permeable cavity defined thereby.

The support device can be an open mesh fill in each permeable cavity.

An annular seal ridge may be provided on each spacer collar to seal each membrane around the fluid passageway against the membrane support plate covered thereby.

The fill recess may be elongated to extend along each end of the feed fluid recess, and the fluid inlet and outlet ports may each be a plurality of spaced apart along their respective recesses. The fluid passage may be one of a plurality of similar fluid passages, each of which may be one of a plurality of similar fluid passages through the membrane support plate and the membrane, and the spacer collar may each be a respective fluid fluid. It can be one of a plurality of similar spacer collars provided for the passage.

Each membrane support plate can be shaped to have a stiffening ridge that extends along the feed fluid recess.

Further in accordance with the present invention, a collar for distributing fluid and sealing a permeable membrane, said collar being positioned between two coaxial spaced apart annular plates and b) spaced apart annular plates. A radially shelled rigid spring-like separator ring that provides a radially extending fluid passage there between, and a collar that distributes fluid and seals a permeable membrane. It

The collar may further comprise a flat membrane seal washer adjacent each of the annular plates and a seal washer positioning device for adjacently positioning the seal washers coaxially on the annular plate. .

The seal washer positioning device may include an upstanding tab on the collar that is positioned adjacent to and within the lumen of the seal washer.

The seal washer can include an annular membrane seal ridge extending around its exposed side.

Each annular plate and separator ring is preferably of high strength copper.

Embodiments of the present invention shown by way of example in the accompanying drawings will now be described.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to FIGS.
And a deposited permeable membrane assembly for fractionating fluids is shown which is a) in face-to-face relationship with facing surfaces 6 and 8 of each plate 2 and 4, respectively. There are two clamp plates 2 and 4, each having an inlet filling recess 1 at the facing first end.
8 and 20 and seal rims 10 and 12, respectively, defining feed fluid recesses 14 and 16 respectively having outlet fill recesses 22 and 24 at opposing second ends, respectively, and an inlet fill recess of plate 2. Between the two clamping plates 2 and 4 having a feed inlet port 26 to 18 and a feed fluid outlet port 28 from the outlet filling recess 24 of the plate 4; A stack of spaced permeable membrane envelopes, shown at 30-33, each membrane envelope 30-33 being i) a frame 34 shaped to extend between the seal rims 10 and 12, Frame 3 from inside
A frame 34 having a permeate outlet device in the form of tubes 36-39 of FIGS. 1 and 2 extending through 4; and ii) a pair of limited flexible membrane support plates 40 and 42 sealed to the frame 34. Support plates 40 and 4
The two pairs are shaped to provide intermediate spaced fluid permeable plate portions 44 and 46 within their frame 34, which plate portions have perforations 47 of FIG. Outer feed fluid recesses 50 and 52, which form a material cavity 48, communicate with permeate outlet devices 36-39 and are aligned therewith in plates 2 and 4, adjacent plates at each end. Filled recesses in which portions 54, 56 and 58, 60 have feed fluid passages 62 and 64 therethrough and are aligned with those in plates 2 and 4 and are shown at 22, 24 and 18, 20, respectively. 66, 68 and 70, 72, respectively, and a pair of restricted flexible membrane support plates 40 and 40, respectively, in which the supply fluid passages 62 and 64 are aligned with the mouths 28 and 26 in the clamp plates 2 and 4, respectively. 42, and iii) each support plate 4 Fluid permeable membrane 7 for 0 and 42
4 and 76 respectively covering the outer sides of the spacer plate and in the support plates 40 and 42 of the fluid passage 6
Deposition of a permeable membrane envelope including fluid permeable membranes 74 and 76 having feed fluid passageways aligned with 2 and 64; and c) a plurality of membrane envelope spacer collars such as those shown at 78 and 80. Where each spacer collar 78, 80 has an outwardly extending fluid passageway therethrough, such as that shown at 82, with each spacer collar 78 and 76 in a rigid spring-like manner. Spacer collars 78, 80 are configured to compress the peripheral portion of each of the fluid passageways therein against the support plate 40 or 42 covered by the membrane 74 or 76, i) One of the spacer collars 78, 80 of the clamp plates 2 and 4 defines one of the fluid passages 84, 86 between the clamp plate ports 26 and 28 and the support plate fluid passages 64 and 62, respectively. Mitsuru recess 18, 20, 22 and 24
In the facing filling recesses 66, 68, 70 and 72 of the support plate in and adjacent to them, and ii) these spacer collars 78, 80 extend between the fluid passages 62 and 74 of the support plate. The facing fill recess 6 between the support plates 40 and 42 to define a passage 88.
6, 68 and 70, 72, a plurality of membrane envelope spacer collars that produce compression, and d) clamp the stack of clamp plates 2 and 4 and the envelopes 30-33 between them in a fluid tight manner, A bolt 90 thereby allows a spacer collar, such as that shown at 78 and 80, to clamp said peripheral portions of each of the membranes 74 and 76 in fluid tight engagement with the support plates 40 and 42 covered thereby. With a device in the form of.

Membrane sealing ridges may be provided, such as ridges 91 (FIG. 2) extending around each membrane support plate 40 or 42.

In this embodiment of the invention, a support device, each in the form of an open wire mesh fill 92, is not collapsible into the permeable cavity 48 defined by each membrane support plate 40 and 42. It is provided to support.

As shown in FIGS. 5 and 6, the annular seal ridges 94 and 96 seal each membrane around the fluid passageway against each membrane support plate covered thereby by each spacer collar 78 and. 80 can be provided.

As shown in FIGS. 2-4, the fill recesses 22, 24, 66, 68, 70 and 72 are elongated so as to extend along each end of the feed fluid recesses 50 and 52 to provide a fluid inlet. And outlet ports 26 and 28 are each one of a plurality of similar fluid ports spaced along their respective fill recesses, and fluid passages 62 and 64 are plurality through the membrane support plate and membrane. Of each of the fluid passages 62 and 64 and each of the spacer collars 78 and 80 is a fluid passage 62 and 64.
Each one of a plurality of spacer collars provided for each.

Each membrane support plate may be shaped to have stiffening ridges 98 and 100 extending along the feed fluid recesses 50 and 52.

As shown in FIGS. 5 and 6, each collar 7
8, 80 are collars that distribute fluid and seal the permeable membrane, and a) two coaxial, spaced apart annular plates 102 and 104.
B) A radially shelled rigid spring-like member positioned between spaced collars 102 and 104 and providing between them a radially extending fluid passage, such as that shown at 108 and 110. The separator ring 106 of FIG.

If desired, a flat membrane seal washer 11
2 and 114 may be provided adjacent to the annular plates 102 and 104, respectively, and seal washer positioning devices, such as hollow annular membrane seal ridges 116 and 118, may seal the seal washers 112, 114 to the annular plates 102 or 104. It can be provided for coaxial positioning above it. Hollow ridges 116 and 118 reinforced with ridges 94 and 96 enhance the membrane seal.

If the ridges 94 and 96 are not provided, the seal washer positioner may consist of an upright positioner tab 120 on each shelled separator ring 106.

As shown in FIGS. 7 and 8, a radially shelled, rigid spring-like channel separator ring 106 surrounds a radially extending line such as AA, BB, CC, etc. Shaped from blank 122, it extends radially and is rounded to provide corrugated valleys 124 and ridges 126. The blank 122 can include locating tabs.

In the device configured as shown in FIGS. 1 and 2, the clamp plates 2 and 4 and the membrane envelope 30 ...
33 are clamped together in a fluid tight manner, collar 78
And 80 are clamped to the membranes 74 and 76 in a fluid tight manner by bolts 90 against the membrane support plates 40 and 42, respectively.

The supply fluid is pressurized by the fluid inlet port 26
To the recesses 50 and dispensed by the collar 78.
And 52 and out of the mouth 28. As the feed fluid flows along the recesses 50 and 52, the permeate of the feed liquid permeates the membranes 74 and 76 and along the cavity 48 and out through the tubes 36-39.

Preferably, each plate 102 or 104 and each separator ring 106 is made of high strength steel, such as stainless steel.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional exploded side view of the end portion of a deposited permeable membrane envelope assembly that fractionates fluid, taken along line I-I of FIG.

2 is a plan view of the assembly shown in FIG. 1 with the top clamp plate and clamp bolts removed.

FIG. 3 line II of FIG. 2 of the membrane envelope portion of the assembly.
The schematic sectional end elevation along I-III.

FIG. 4 is a line IV of FIG. 2 of the spacer collar portion of the assembly.
-Schematic cross-sectional end view along IV.

FIG. 5 is a perspective view of a collar.

FIG. 6 is a cross-sectional side view through the collar and the centerline of the seal washer adjacent thereto.

FIG. 7 is a plan view of a blank for making a radially shelled and substantially rigid channel separation ring portion of a collar.

8 is a side view of the blank shown in FIG. 7 (shaped with an annular plate) shaped to be radially shelled.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Deposited permeable membrane assembly for fractionating fluids 2, 4 Clamp plates 6, 8 Facing surfaces 10, 12 Seal rims 14, 16 Supply fluid recesses 18, 20 Inlet filling recesses 22, 24 Outlet filling chamber recesses 26 Supply fluid Inlet port 28 Supply fluid outlet port 30, 31, 32, 33 Separated permeable membrane envelope 34 Frame 36, 37, 38, 39 Tube 40, 42 Membrane support plate 44, 46 Fluid permeable portion 47 Perforated 48 Inward Permeate void 50,52 External supply fluid recess 54,56,58,60 Plate portion 62,64 Supply fluid passage 66,68,70,72 Fill recess 74,76 Fluid permeable membrane 78,80 Membrane envelope spacer collar 82, 88 fluid passage 90 bolt 91 ridge portion 92 open wire mesh filling 94, 96 annular seal ridge portion 98, 100 for stiffening Ridges 102, 104 Annular plates 106 Separator rings 108, 110 Fluid passages 112, 114 Flat membrane seal washers 116, 118 Membrane seal ridges 120 Positioning tabs 122 Blanks 124 Corrugated ridges 126 Corrugated ridges

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Thomas Davryu McCracken Aspen Viewway, Ontario, Orleans Canada 1767 (72) Inventor Adam Bennett Broadhead Avenue, Ontario, Ottawa Canada 536

Claims (11)

[Claims] 1. A deposited permeable membrane assembly for separating fluids, comprising: (a) two clamp plates in face-to-face relationship spaced apart from the facing surfaces of each plate, the first facing plates. A sealing rim defining a feed fluid recess having an inlet filling recess at one end and an outlet filling recess at an opposing second end; a feed inlet mouth to the inlet filling recess of one plate; Two ramp plates having a feed fluid outlet port from the plate's outlet filling recess and b) a stack of spaced permeable membrane envelopes between the plates, each membrane envelope extending between: i) a seal rim. A frame shaped as existing, having a permeate outlet device extending from the interior thereof through the frame; ii) a pair of limited flexible membrane support plates sealed to the frame, A pair of support plates Is shaped in the frame so as to provide a spaced fluid pervious plate portion of the intermediate, the plate portion forms an inner permeate space therebetween,
Forming an outer feed fluid recess in communication with the permeate outlet device and aligned therewith in the plate, adjacent plate portions at each end having feed fluid passageways therethrough and with them in the plate. A pair of restricted flexible membrane support plates that form aligned filled recesses and the supply fluid passages are aligned with the mouths in the clamp plate; and iii) a fluid permeable membrane for each support plate. A fluid permeable membrane covering the outer side of the spacer plate and having a feed fluid passage aligned with the fluid passage in the support plate; and c) a plurality of permeable membrane envelopes; Membrane envelope spacer color of
Each spacer collar has an outwardly extending fluid passageway around which each spacer collar surrounds the rim of each membrane around each fluid passageway therein in a rigid spring-like manner. Configured to compress against a supported support plate,
Spacer collars are: i) facing fill recesses of the support plate in and adjacent to the support plate such that these spacer collars partition the fluid passages between the clamp plate mouth and the support plate fluid passages. And ii) a plurality of membrane envelope spacer collars that produce compression in the facing fill recesses between the support plates so that these spacer collars define fluid passages extending between the fluid passages in the support plates. D) The clamp plates and the stack of envelopes between them are clamped in a fluid-tight manner so that the spacer collars engage each said marginal portion of the membrane in a fluid-tight engagement with a support plate covered thereby. And a device for clamping with a deposited permeable membrane assembly for fractionating the fluid. 2. An assembly as claimed in claim 1 in which a support device is provided for non-collapsible support of each membrane support plate into the permeable cavity defined thereby. 3. The assembly according to claim 2, wherein the support device is a mesh fill in each permeable cavity. 4. An assembly according to claim 1, wherein an annular seal ridge is provided on each spacer collar to seal each membrane around the fluid passageway to the membrane support plate covered thereby. . 5. A fill recess is elongated to extend along each end of the feed fluid recess, and fluid inlet and outlet ports are a plurality of similar fluid ports spaced along their respective fill recesses. A plurality of similar spacers provided for each fluid passage, the fluid passage being each one of a plurality of similar fluid passages through the membrane support plate and the membrane. An assembly as claimed in claim 1 in each one of the collars. 6. The assembly of claim 5 wherein each membrane support plate is shaped to have a stiffening ridge extending along the feed fluid recess. 7. A permeable membrane seal collar for distributing fluid, comprising: a) two coaxial, spaced apart annular plates and b) radially extending fluid passages positioned between the spaced apart annular plates. A radially scalloped rigid spring-like separator ring providing between, and a permeable membrane seal collar for distributing fluid. 8. The method of claim 7, further comprising a flat membrane seal washer adjacent each of the annular plates, and a seal washer positioning device for coaxially positioning the seal washer adjacent the annular washer on the annular plate. The listed color. 9. The collar of claim 8 wherein the seal washer positioner comprises an upstanding tab on the collar that positions in the lumen washer plate of the seal washer. 10. The collar of claim 7 wherein the seal washer is provided with an annular membrane seal ridge extending around its exposed side. 11. The collar of claim 7 wherein each annular plate and separator ring is of high strength steel.