CN217473176U - Bag type filtering device - Google Patents

Abstract

The utility model discloses a bag formula filter equipment belongs to the filtration field, the easy problem of destroying by the screen cloth of filter membrane in the clamping in-process of having solved filter membrane package, the technical scheme who solves this problem mainly is that closed bag includes first splint, the second splint and bordure, first splint, two terminal surfaces of establishing filter membrane package are pressed from both sides respectively to the second splint, the periphery of filter membrane package is located to the ring of borduring, bordure with first splint, the equipment of second splint forms closed bag, closed bag is equipped with first interface, second interface, third interface, the surface of closed bag is equipped with first interface, second interface and third interface, first interface is through first interface and first through-hole intercommunication, the second through-hole passes through second interface and second interface intercommunication, the third through-hole passes through third interface and third interface intercommunication. The utility model discloses mainly used tangential flow filters, simplifies user's operation, improves the convenience of operation, effectively avoids the filter membrane in the filter membrane package to be crushed simultaneously.

Description

Bag type filtering device

Technical Field

The utility model relates to a filter field, especially a bag formula filter equipment.

Background

In the prior art, the filtration flow direction of the common filtration technology (NFF) is vertical to the filtration medium, and particles are easy to stay in the interior or on the surface of the filtration membrane and are only suitable for processing a small-volume sample. The tangential flow filtration is a filtration form in which the liquid flow direction and the filtration direction are vertical, has the advantages of simple device, high sample processing speed, high efficiency and the like, and is suitable for processing samples in a larger scale. Tangential flow filtration is commonly used in bioprocessing, purification of viral vectors and vaccines, production of pharmaceutical water, cell harvest and clarification, and concentration, purification, diafiltration, etc. of products, and its shadow is currently seen in the biological, pharmaceutical, food, etc. industries. Devices providing tangential flow filtration, such as the filtration devices disclosed in CN100579635C, CN101134157A and CN101920168A, the specific structure of which can also be referred to the filtration device disclosed in CN 101298005A. Because these filtering devices have certain flexibility, a plurality of filtering devices are generally required to be stacked for use in filtering, therefore, in practical application, the support or the retainer is required to be used for clamping, and clamping is basically carried out in a mode of clamping on two end faces of the filter device, i.e. the filter device is subjected only to forces by which the support or holder clamps against each other on both end faces, since the current filtering devices are reused, this results in inconvenient operation of the clamping means, namely, clamping installation is carried out every time of use, and the clamping acting force is easy to have different magnitude, so that the clamping acting force of the filtering device is different, the size of the flow channel inside the filtering device is easy to be different, so that the filtering effect is different, and meanwhile, once the clamping acting force is too large, the situation that the filtering membrane in the filtering device is crushed by the screen is easy to occur.

SUMMERY OF THE UTILITY MODEL

The utility model aims to reach provides a capsule filter equipment, simplifies user's operation, improves the convenience of operation, effectively avoids the filter membrane in the filter membrane package to be crushed simultaneously.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the bag type filtering device comprises a filtering film package and a closed bag, wherein the filtering film package is provided with two opposite end surfaces, a first through hole, a second through hole and a third through hole which penetrate through the two end surfaces, the closed bag comprises a first clamping plate, a second clamping plate and a covered edge, the first clamping plate and the second clamping plate are respectively clamped on the two end surfaces of the filtering film package, the covered edge is annularly arranged on the periphery of the filtering film package, and the covered edge and the first clamping plate are arranged, the second splint equipment forms the sealed bag of parcel filter membrane package, sealed bag is equipped with first interface, the second interface, the third interface, the surface of sealed bag is equipped with first interface, second interface and third interface, first interface is used for inputing stoste through first interface and first through-hole intercommunication, the second through-hole is used for discharging the filtrating through second interface and second interface intercommunication, the third through-hole is used for discharging gas and/or liquid through third interface intercommunication.

Furthermore, the edge cover is an integrated structural member, and the first clamping plate and the second clamping plate are respectively and fixedly connected with the edge cover so as to keep clamping the filtering membrane package.

Furthermore, the first clamping plate is welded and fixed or clamped and fixed with the wrapping edge; and/or the second clamping plate is welded and fixed or clamped with the covered edge.

Further, the edge is surrounded on the periphery of the first clamping plate, and the surface, which is far away from the filter membrane package, of the first clamping plate does not protrude out of the end face of the edge; and/or the edge is surrounded on the periphery of the second clamping plate, and the surface of the second clamping plate, which is deviated from the filter membrane package, does not protrude out of the end face of the edge.

Furthermore, the edge comprises a first part and a second part which are separated, the first part and the first clamping plate are of an integral structure, the second part and the second clamping plate are of an integral structure, and the first part and the second part are fixedly connected to enable the first clamping plate and the second clamping plate to clamp the filter membrane pack.

Furthermore, a first sealing element is arranged between the inlet of the first connecting channel and the first through hole, a second sealing element is arranged between the inlet of the second connecting channel and the second through hole, and a third sealing element is arranged between the inlet of the third connecting channel and the third through hole.

Further, the first sealing element, the second sealing element and the third sealing element are all independent annular structures; or the inlet of the first connecting channel and the inlet of the second connecting channel are both arranged on the first clamping plate or both arranged on the second clamping plate, and the first sealing element and the second sealing element are of an integrated structure; or the inlet of the first connecting channel and the inlet of the third connecting channel are both arranged on the first clamping plate or the second clamping plate, and the first sealing element and the third sealing element are of an integrated structure; or the inlet of the second connecting channel and the inlet of the third connecting channel are both arranged on the first clamping plate or both arranged on the second clamping plate, and the second sealing element and the third sealing element are of an integrated structure; or the inlet of the first connecting channel, the inlet of the second connecting channel and the inlet of the third connecting channel are arranged on the first clamping plate or the second clamping plate, and the first sealing element, the second sealing element and the third sealing element are of an integrated structure.

Furthermore, a first sealing gasket for covering the end face of the filter membrane package is arranged between the first clamping plate and the filter membrane package, and the first sealing gasket is tightly pressed on the end face of the filter membrane package by the first clamping plate; and/or a second sealing gasket for covering the end face of the filter membrane package is arranged between the second clamping plate and the filter membrane package, and the second sealing gasket is tightly pressed on the end face of the filter membrane package by the second clamping plate.

Furthermore, the filter membrane package has a plurality of first through holes, the first connecting channel comprises a first manifold arranged on the first clamping plate or the second clamping plate, the first manifold is provided with an inlet and a plurality of outlets, the inlet of the first manifold is connected and communicated with the first port, and the outlets of the first manifold are in one-to-one sealing connection and communication with the first through holes.

Furthermore, the filter membrane package has a plurality of second through holes, the second connecting channel comprises a second manifold arranged on the first clamping plate or the second clamping plate, the second manifold is provided with a plurality of inlets and an outlet, the inlets of the second manifold are in one-to-one sealing connection and communication with the second through holes, and the outlet of the second manifold is in connection and communication with the second port.

Furthermore, the second through holes comprise a first group of second through holes positioned on the same side as the first through holes and a second group of second through holes positioned on the same side as the third through holes, the second manifold comprises a first second manifold and a second manifold, an inlet of the first second manifold is in one-to-one sealing connection and communication with the first group of second through holes, an inlet of the second manifold is in one-to-one sealing connection and communication with the second group of second through holes, the second interface is provided with one and is simultaneously communicated with an outlet of the first second manifold and an outlet of the second manifold, or the second interface is provided with two and is respectively communicated with the outlet of the first second manifold and the outlet of the second manifold.

Furthermore, the filter membrane package has a plurality of third through holes, the third connecting channel comprises a third manifold arranged on the first clamping plate or the second clamping plate, the third manifold is provided with a plurality of inlets and an outlet, the inlets of the third manifold are in one-to-one sealing connection and communication with the third through holes, and the outlet of the third manifold is in sealing connection and communication with the third port.

Further, first connector channel is including the first connect the via hole of locating first splint or second splint, the one end and the first through-hole of first connect the via hole seal meet the intercommunication, the other end forms first interface, the second connector channel is including the second connect the via hole of locating first splint or second splint, the one end and the second through-hole of second connect the via hole seal and meet the intercommunication, the other end forms the second interface, the third connector channel is including the third connect the via hole of locating first splint or second splint, the one end and the third through-hole seal of third connect the via hole meet the intercommunication, the other end forms the third interface.

Further, the filter membrane package is provided with a first through hole, two second through holes and a third through hole; or the filtering membrane package is provided with a plurality of first through holes, a plurality of second through holes and a plurality of third through holes, one end of each first connecting through hole covers and is communicated with all the first through holes, one end of each second connecting through hole covers and is communicated with all the second through holes, and one end of each third connecting through hole covers and is communicated with all the third through holes.

Further, the first interface, the second interface and the third interface are arranged on the outer side surface of the edge cover; or the first interface, the second interface and/or the third interface are/is arranged on one of the surface of the first clamping plate and the surface of the second clamping plate; or at least one of the first interface, the second interface and the third interface is arranged on the outer side surface of the edge cover, and at least one of the first interface, the second interface and the third interface is arranged on the surface of the first clamping plate or the surface of the second clamping plate.

Furthermore, the first port and the third port are arranged on the same surface of the closed bag; and/or the second interface and the third interface are respectively arranged on two opposite surfaces of the closed bag; and/or the height position of the first interface is lower than that of the third interface.

After the technical scheme is adopted, the utility model has the advantages of as follows: the first clamping plate and the second clamping plate are respectively clamped on two end faces of the filtering membrane package, the wrapping edge is annularly arranged on the periphery of the filtering membrane package, the periphery of the filtering membrane package is kept through the wrapping edge, if the filtering membrane package is clamped by the first clamping plate and the second clamping plate too tightly, the wrapping edge can limit outward expansion and deformation of the filtering membrane package and in turn limit deformation of the filtering membrane package on the two end faces, and deformation of the filtering membrane package in a reasonable range after the filtering membrane package is clamped by the first clamping plate and the second clamping plate is ensured, so that the filtering membrane in the filtering membrane package is effectively prevented from being crushed by a screen mesh; secondly, as the packaging adhesive on the periphery of the filter membrane package has certain elasticity, if the filter membrane package is pressed too tightly in the direction vertical to the end face, the filter membrane package expands towards the periphery and deforms, and under the limiting action of the wrapping edge, the deformation limit is provided, once the pressure in the direction vertical to the end face is weakened, the packaging adhesive on the periphery of the filter membrane package resets towards the direction vertical to the end face, so that self-adaptive assembly can be realized, and a user only needs to adjust the clamping force between the first clamping plate and the second clamping plate; thirdly, the wrapping edge is assembled with the first clamping plate and the second clamping plate to form a closed bag wrapping the filtering membrane package, so that the protective performance of the filtering membrane package can be improved, the filtering membrane package is not easy to damage in the transportation and use processes, the connection and use of the filtering membrane package can be simplified, when a user uses the filtering membrane package, the user only needs to be in sealing connection with the first interface, the second interface and the third interface on the outer surface of the closed bag, the quick and easy connection is realized, the quick connection and use effects are more obvious for a large filtering membrane package with a large number of first through holes, second through holes and third through holes, the closed bag and the filtering membrane package are not required to be repeatedly disassembled and assembled, therefore, when the filtering membrane package is repeatedly used, the acting force of the closed bag on the filtering membrane package can be kept stable, the filtering membrane is not easily crushed by a screen, and the internal working condition of the filtering membrane package can be kept consistent when the filtering membrane package is repeatedly used, ensuring the stability of the filtering effect; fourthly, the wrapping edge, the first clamping plate and the second clamping plate are assembled to form a sealed bag, the whole structure is simple, the damage is not easy, the service life is long, and the use cost of a user can be effectively reduced.

Drawings

The present invention will be further explained with reference to the accompanying drawings:

FIG. 1 is a schematic view of a bladder filter apparatus of the present invention;

fig. 2 is a bottom view of a bag filter according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;

FIG. 5 is a cross-sectional view taken along line C-C of FIG. 2;

FIG. 6 is a cross-sectional view taken along line D-D of FIG. 2;

FIG. 7 is a cross-sectional view taken along line E-E of FIG. 2;

FIG. 8 is a schematic view of a filter membrane package according to the present invention (having a plurality of first through holes, second through holes, and third through holes);

FIG. 9 is a schematic end view of the filtration membrane package of FIG. 8;

FIG. 10 is a schematic view of the structure of a filter membrane package according to the present invention;

FIG. 11 is a schematic cross-sectional view of a filter membrane package according to the present invention;

FIG. 12 is a schematic cross-sectional view of a filter membrane package according to the present invention (II);

fig. 13 is a schematic view of the edge of the first clamping plate being flush with the end surfaces of the first clamping plate and the second clamping plate according to the first embodiment of the present invention;

fig. 14 is a schematic view of a first sealing element and a third sealing element added in the first embodiment of the present invention;

fig. 15 is a schematic view of a first embodiment of the present invention with a second sealing element added;

fig. 16 is a schematic view of a first seal gasket and a second seal gasket added in the first embodiment of the present invention;

fig. 17 is a schematic view of a structure of through holes adopted in the second connection channel and the third connection channel in the first embodiment of the present invention;

fig. 18 is a schematic view of a first connection channel adopting a through hole structure according to a first embodiment of the present invention;

FIG. 19 is a schematic view of a filter membrane package according to the present invention (having a first through hole, two second through holes and a third through hole);

FIG. 20 is a front view of a bladder filter according to one embodiment of the present invention;

FIG. 21 is a sectional view taken in the direction F-F of FIG. 20;

FIG. 22 is a sectional view taken along line G-G of FIG. 20;

FIG. 23 is a sectional view taken along line H-H in FIG. 20;

FIG. 24 is a sectional view taken along line J-J of FIG. 20;

fig. 25 is a schematic view of a first connection channel according to a first embodiment of the present invention, which adopts a through hole structure and forms only one first interface;

fig. 26 is a schematic view of a first embodiment of the present invention in which a second connection channel and a third connection channel adopt a through-hole structure and only form a second interface and a third interface;

fig. 27 is a schematic view of a first embodiment of the present invention in which two second interfaces are provided;

fig. 28 is a schematic exploded view of a bladder-type filtering device according to a second embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein.

It should be understood that, in various embodiments of the present invention, the sequence numbers related to the processes do not mean the order of execution, and the execution order of the processes should be determined by their functions and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.

It should be understood that in the present application, "comprising" and "having" and any variations thereof, is intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

It should be understood that, in the present invention, "a plurality" means two or more. "and/or" is merely an association describing an associated object, meaning that three relationships may exist, e.g., X and/or Y, may mean: x alone, X and Y simultaneously, and Y alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "comprises X, Y and Z" and "comprises X, Y, Z" means that X, Y, Z all comprise, "comprises X, Y or Z" means that X, Y, Z comprises one of the three, "comprises X, Y and/or Z" means that X, Y, Z comprises any one or any two or three of the three.

The technical solution of the present invention will be described in detail with specific examples. The following specific embodiments may be optionally combined with or replaced by each other according to practical situations, and the same or similar concepts or processes may not be described in detail in some embodiments.

The first embodiment is as follows:

as shown in fig. 1 to 9, the present invention provides a bag-type filtering device, which includes a filtering membrane package 100 and a sealing bag 200, the filtering membrane package 100 has two opposite end faces, a first through hole 101, a second through hole 102 and a third through hole 103 penetrating through the two end faces, the sealing bag 200 includes a first clamping plate 21, a second clamping plate 22 and a covered edge 23, the first clamping plate 21 and the second clamping plate 22 are respectively clamped on the two end faces of the filtering membrane package 100, the covered edge 23 is annularly disposed on the periphery of the filtering membrane package 100, the covered edge 23, the first clamping plate 21 and the second clamping plate 22 are assembled to form the sealing bag 200 wrapping the filtering membrane package 100, the sealing bag 200 is provided with a first connecting channel 201, a second connecting channel 202 and a third connecting channel 203, a first interface 2011, a second interface 2021 and a third interface 2031 are disposed on the outer surface of the sealing bag 200, the first interface 2011 is communicated with the first through hole 101 through the first connecting channel 201 for inputting raw liquid, the second through hole 102 communicates with the second port 2021 through the second connection passage 202 for discharging filtrate, and the third through hole 103 communicates with the third port 2031 through the third connection passage 203 for discharging gas and/or liquid. Specifically, the gas may be discharged from the filter membrane module 100 under the pressure of the raw liquid at the initial stage of filtration, and the liquid may be discharged from the filter membrane module 100 under the pressure of the raw liquid at the initial stage of filtration, and then the third port 2031 may be closed to form dead-end filtration, or the third port 2031 may be kept normally open during the filtration mode in which the residual liquid is generated, so as to discharge the residual liquid.

The filtering membrane package 100 is formed by stacking a plurality of filtering units, the specific structure can be shown in fig. 8 to 12, the filtering units are two, two filtering units are sequentially stacked to form the filtering membrane package, the first filtering unit is a liquid inlet flow guide unit and comprises a liquid inlet flow guide screen 11, the second filtering unit is a filtrate flow guide unit and comprises a filtering membrane 12 and a filtrate flow guide screen 13, the filtering membrane 12 and the filtrate flow guide screen 13 are stacked, two filtering membranes 12 are respectively arranged on two sides of the filtrate flow guide screen 13, and it can be understood that if the filtrate flow guide unit is arranged at the outermost end of the filtering membrane package 100, the filtering membrane 12 is not arranged on the outer side of the filtrate flow guide screen 13 of the filtrate flow guide unit, and only one filtering membrane 12 is arranged on the inner side. The liquid inlet flow guide screen 11 is provided with a first through hole 1101, a second through hole 1102 and a third through hole 1103, the filter membrane 12 is provided with a fourth through hole 1201, a fifth through hole 1202 and a sixth through hole 1203, the filtrate flow guide screen 13 is provided with a seventh through hole 1301, an eighth through hole 1302 and a ninth through hole 1303, wherein the first through hole 1101, the fourth through hole 1201 and the seventh through hole 1301 are aligned and communicated to form a first through hole 101, the second through hole 1102, the fifth through hole 1202 and the eighth through hole 1302 are aligned and communicated to form a second through hole 102, and the third through hole 1103, the sixth through hole 1203 and the ninth through hole 1303 are aligned and communicated to form a third through hole 103. For forming a reliable filtering flow channel, in one liquid inlet diversion unit, the hole wall of the second through hole 1102 is packaged by packaging glue 1000, filtrate is prevented from flowing back to the liquid inlet diversion unit, in one filtrate diversion unit, the hole walls of the fourth through hole 1201 and the seventh through hole 1301 are packaged by packaging glue 1000, stock solution is prevented from directly flowing into the filtrate diversion unit, meanwhile, the hole walls of the sixth through hole 1203 and the ninth through hole 1303 are packaged by packaging glue 1000, and residual solution is prevented from flowing back to the filtrate diversion unit. The process of filtering the fluid using the filter membrane package is as follows: the stock solution to be filtered enters the filter membrane package from the first through hole 1101 of the liquid inlet guide unit, then enters the liquid inlet guide screen 11 from the hole wall of the first through hole 1101, is filtered by the filter membrane to generate filtrate, the filtrate flows into the fifth through hole 1202 through the filtrate guide screen 13, is discharged out of the filter membrane package through the eighth through hole 1302 and the second through hole 1102, and part of the rest solution which is not filtered is discharged out of the third through hole 1103 of the liquid inlet guide unit.

The utility model discloses have following effect: firstly, the first clamping plate 21 and the second clamping plate 22 are respectively clamped on two end faces of the filter membrane package 100, the wrapping edges 23 are annularly arranged on the periphery of the filter membrane package 100, the periphery of the filter membrane package 100 is kept through the wrapping edges 23, if the first clamping plate 21 and the second clamping plate 22 clamp the filter membrane package 100 too tightly, the wrapping edges 23 can limit outward expansion and deformation of the filter membrane package 100 and conversely limit deformation of the filter membrane package 100 on the two end faces, and deformation of the filter membrane package 100 after being clamped by the first clamping plate 21 and the second clamping plate 22 is ensured to be within a reasonable range, so that the filter membrane in the filter membrane package 100 is effectively prevented from being crushed by a screen; secondly, since the sealing adhesive 1000 at the periphery of the filter membrane 100 has a certain elasticity, if the filter membrane 100 is pressed too tightly in the direction perpendicular to the end face, the filter membrane 100 will expand and deform towards the periphery, and under the restriction of the wrapping edge 23, there is a deformation limit, once the pressure in the direction perpendicular to the end face is weakened, the sealing adhesive 1000 at the periphery of the filter membrane 100 will reset in the direction perpendicular to the end face, so that the self-adaptive assembly can be realized, and the user only needs to adjust the clamping force between the first clamping plate 21 and the second clamping plate 22; thirdly, the edge 23, the first clamping plate 21 and the second clamping plate 22 are assembled to form the sealing bag 200 for wrapping the filter membrane package 100, so that the protection performance of the filter membrane package 100 can be improved, the filter membrane package 100 is not easy to damage in the transportation and use processes, and the connection and use of the filter membrane package 100 can be simplified, when a user uses the large-scale filter membrane package 100 with a large number of first through holes 101, second through holes 102 and third through holes 103, the large-scale filter membrane package can be quickly and easily connected only by being in sealing connection with the first interface 2011, the second interface 2021 and the third interface 2031 on the outer surface of the sealing bag 200; fourthly, the wrapping edge 23, the first clamping plate 21 and the second clamping plate 22 are assembled to form the closed bag 200, the whole structure is simple, the damage is not easy, the service life is long, and the use cost of a user can be effectively reduced.

In one embodiment, the filter membrane package 100 can be clamped in a relatively simple manner, and as shown in fig. 2 and 3, the edge 23 is an integral structure, and the first clamping plate 21 and the second clamping plate 22 are fixedly connected to the edge 23 respectively to keep clamping the filter membrane package 100. The fixing connection modes of the first clamping plate 21, the second clamping plate 22 and the edge 23 can be various, for example, the first clamping plate 21 and the edge 23 are welded or clamped, and the second clamping plate 22 and the edge 23 are welded or clamped, but can be fixed by a clamp.

The tipping 23 may surround a part of the first clamping plate 21 as shown in fig. 2 and 3, or may surround the first clamping plate 21 completely, for example, in another embodiment, the tipping 23 surrounds the periphery of the first clamping plate 21, as shown in fig. 13, the surface of the first clamping plate 21 facing away from the filter membrane pack 100 does not protrude from the end surface of the tipping 23, and may alternatively be flush with the end surface. Similarly, the covered edge 23 may surround a part of the second clamping plate 22, or may completely surround the second clamping plate 22, in an embodiment, the covered edge 23 surrounds the periphery of the second clamping plate 22, and the surface of the second clamping plate 22 facing away from the filter membrane package 100 does not protrude from the end surface of the covered edge 23, or the two surfaces are flush, so that the appearance of the whole bag-type filter device is more neat and uniform, and the edge angle is reduced.

Since the first clamping plates 21 and the second clamping plates 22 are respectively clamped on two end surfaces of the filter membrane package 100, it is necessary to selectively provide inlets of the first connecting channel 201, the second connecting channel 202 and the third connecting channel 203 from the first clamping plates 21 and the second clamping plates 22, for example, in the embodiment shown in fig. 3 and 4, the inlets of the first connecting channel 201 and the second connecting channel 202 are both provided on the surface of the second clamping plates 22 facing the filter membrane package 100, the inlet of the third connecting channel 203 is provided on the surface of the first clamping plates 21 facing the filter membrane package 100, and the inlets of the first connecting channel 201, the second connecting channel 202 and the third connecting channel 203 are all provided on the surface of the second clamping plates 22 facing the filter membrane package 100, which are not listed.

Since the first clamping plate 21, the second clamping plate 22 and the filter membrane package 100 are assembled, in order to further ensure the sealing connection between the inlet of the first connecting channel 201 and the first through hole 101, between the inlet of the second connecting channel 202 and the second through hole 102 and between the inlet of the third connecting channel 203 and the third through hole 103, as shown in fig. 14 and 15, a first sealing member 31 may be provided between the inlet of the first connecting channel 201 and the first through hole 101, a second sealing member 32 may be provided between the inlet of the second connecting channel 202 and the second through hole 102, and a third sealing member 33 may be provided between the inlet of the third connecting channel 203 and the third through hole 103. The first sealing element 31, the second sealing element 32 and the third sealing element 33 may be common sealing rings such as common rubber or silicone, and may also be sealed by pressing the sealing bag 200 against the filter membrane package 100, that is, an annular rib is disposed at an inlet of the first connecting channel 201 to form the first sealing element 31, and the annular rib and the sealing bag 200 are of an integral structure. For the same reason, an annular rib may be provided at the inlet of the second connecting passage 202 to form the second seal 32, and an annular rib may be provided at the inlet of the third connecting passage 203 to form the third seal 33.

As mentioned above, the first sealing member 31, the second sealing member 32 and the third sealing member 33 can be designed as independent annular structures, and the replacement and maintenance cost is low, in this embodiment, the inlet of the first connecting channel 201, the inlet of the second connecting channel 202 and the inlet of the third connecting channel 203 are not limited to be arranged on the first clamping plate 21 or the second clamping plate 22. In another embodiment, if the inlets of the first connecting channel 201 and the second connecting channel 202 are both provided on the first clamping plate 21 or both provided on the second clamping plate 22, the first sealing member 31 and the second sealing member 32 may be selected to be of an integral structure. Similarly, if the inlet of the first connecting passage 201 and the inlet of the third connecting passage 203 are both provided on the first clamping plate 21 or the second clamping plate 22, the first seal 31 and the third seal 33 may be selected to be of an integral structure. Similarly, if the inlet of the second connecting channel 202 and the inlet of the third connecting channel 203 are both provided on the first clamping plate 21 or both provided on the second clamping plate 22, the second sealing member 32 and the third sealing member 33 can be selected to be of an integral structure. If the inlet of the first connecting channel 201, the inlet of the second connecting channel 202 and the inlet of the third connecting channel 203 are all arranged on the first clamping plate 21 or the second clamping plate 22, the first sealing element 31, the second sealing element 32 and the third sealing element 33 can be integrated, so that the processing and the assembly are convenient, and the long-term sealing reliability is higher.

Instead of providing seals at the inlet of the first connecting channel 201, the inlet of the second connecting channel 202 and the inlet of the third connecting channel 203, a first sealing gasket 34 covering the end face of the filter membrane package 100 may be provided directly between the first clamping plate 21 and the filter membrane package 100, as shown in fig. 16, the first clamping plate 21 presses the first seal 34 against the end face of the filter membrane pack 100, it will be appreciated that if the inlet of the first connecting channel 201 is located on the first clamping plate 21, the first sealing gasket 34 is correspondingly provided with a first sealing gasket through hole 341 for allowing the inlet of the first connecting channel 201 to be in sealing communication with the first through hole 101, and the same applies to the inlet of the second connecting channel 202 and the inlet of the third connecting channel 203, and the first sealing gasket 34 not only plays a role of sealing connection, but also can protect the filter membrane package 100 to prevent the first clamping plate 21 from crushing the filter membrane package 100. Similarly, a second gasket 35 covering the end face of the filter membrane package 100 may be provided between the second clamping plate 22 and the filter membrane package 100, the second clamping plate 22 presses the second gasket 35 against the end face of the filter membrane package 100, and if the inlet of the first connecting channel 201 is located on the second clamping plate 22, a second gasket through hole 351 for sealing communication between the inlet of the first connecting channel 201 and the first through hole 101 is correspondingly provided on the second gasket 35, and the same applies to the inlet of the second connecting channel 202 and the inlet of the third connecting channel 203.

In one embodiment, the filter membrane package 100 has a plurality of first through holes 101, the first connecting channel 201 comprises a first manifold 201a disposed on the first clamping plate 21, the first manifold 201a has an inlet and a plurality of outlets, the inlet of the first manifold 201a is connected and communicated with the first port 2011, and the outlet of the first manifold 201a is connected and communicated with the first through holes 101 in a one-to-one sealing manner. Similarly, if the first connecting channel 201 is provided in the second clamping plate 22, the structure of the first manifold 201a can also be adopted. The one-to-many connection is realized through the first manifold 201a, so that the assembly process can be simplified, and the assembly efficiency can be improved.

The filtration membrane package 100 has a plurality of second through holes 102, the second connecting channel 202 comprises a second manifold 202a disposed on the first clamping plate 21, the second manifold 202a has a plurality of inlets and an outlet, the inlet of the second manifold 202a is connected and communicated with the second through holes 102 in a one-to-one sealing manner, and the outlet of the second manifold 202a is connected and communicated with the second port 2021. Similar to the first manifold 201a, if the second connection passage 202 is provided in the second clamping plate 22, the structure of the second manifold 202a described above may also be adopted. The one-to-many connection is realized through the second manifold 202a, so that the assembly process can be simplified, and the assembly efficiency can be improved.

In some versions of filtration membrane package 100, second through-holes 102 may be provided on only one side of filtration membrane package 100, in other versions, such as shown in fig. 8, second through-holes 102 comprise a first set of second through-holes 102 on the same side as first through-holes 101 and a second set of second through-holes 102 on the same side as third through-holes 103, if only one set of second through-holes 102 is used, the other set of second through-holes 102 can be closed by a closing bladder, if two sets of second through-holes 102 are used at the same time, second manifold 202a can be designed to comprise a first second manifold 202a and a second manifold 202a, the inlet of first second manifold 202a is in one-to-one sealing communication with first set of second through-holes 102, the inlet of second manifold 202a is in one-to-one sealing communication with second set of second through-holes 102, and second port 2021 is provided with two, as shown in fig. 27, the two second ports 2021 are connected to and communicated with an outlet of the first second manifold 202a and an outlet of the second manifold 202a, respectively. In another embodiment, the second port 2021 may be provided with only one port and connected to and communicated with the outlet of the first second manifold 202a and the outlet of the second manifold 202 a.

Similar to the first and second through- holes 101 and 102, in one embodiment, the filter membrane module 100 has a plurality of third through-holes 103, the third connecting channel 203 comprises a third manifold 203a disposed on the first clamping plate 21, the third manifold 203a has a plurality of inlets and an outlet, the inlets of the third manifold 203a are in one-to-one sealed communication with the third through-holes 103, and the outlet of the third manifold 203a is in sealed communication with the third port 2031. If the third connecting passage 203 is provided in the second clamp plate 22, the third manifold 203a may be configured as described above. The one-to-many connection is realized through the third manifold 203a, so that the assembly process can be simplified, and the assembly efficiency can be improved.

In addition to the structure using the manifold, the first connecting channel 201 may also be a through hole structure, as shown in fig. 17 and 18, the first connecting channel 201 includes a first connecting through hole 201b provided in the first clamp plate 21, one end of the first connecting through hole 201b is in sealed connection and communication with the first through hole 101, and the other end forms a first port 2011, similarly, the second connecting channel 202 includes a second connecting through hole 202b provided in the first clamp plate 21, one end of the second connecting through hole 202b is in sealed connection and communication with the second through hole 102, and the other end forms a second port 2021, the third connecting channel 203 includes a third connecting through hole 203b provided in the second clamp plate 22, and one end of the third connecting through hole 203b is in sealed connection and communication with the third through hole 103, and the other end forms a third port 2031. The first connecting through-hole 201b may be selectively provided in the second clip 22, the second connecting through-hole 202b may be selectively provided in the second clip 22, and the third connecting through-hole 203b may be selectively provided in the first clip 21. The first connection passage 201, the second connection passage 202 and the third connection passage 203 adopt a through hole structure, which can be smoother for the liquid flow.

One type of filter membrane module 100 has one first through-hole 101, two second through-holes 102 and one third through-hole 103, as shown in fig. 19 to 24, and thus it is more suitable that the first connecting channel 201, the second connecting channel 202 and the third connecting channel 203 adopt a through-hole structure. Of course, the first connecting channel 201, the second connecting channel 202 and the third connecting channel 203 are also applicable to the filter membrane package 100 having the plurality of first through holes 101, the plurality of second through holes 102 and the plurality of third through holes 103 by adopting a through hole structure, that is, in another embodiment, the filter membrane package 100 has the plurality of first through holes 101, the plurality of second through holes 102 and the plurality of third through holes 103, and the corresponding number of first connecting through holes 201b, second connecting through holes 202b and third connecting through holes 203b are provided.

In addition, one end of the first connecting via 201b may cover and communicate with all the first vias 101, and the other end of the first connecting via 201b forms a first interface 2011, as shown in fig. 25, and similarly, one end of the second connecting via 202b may cover and communicate with all the second vias 102, the other end of the second connecting via 202b forms a second interface 2021, one end of the third connecting via 203b covers and communicates with all the third vias 103, and the other end of the third connecting via 203b forms a third interface 2031, as shown in fig. 26.

In conjunction with the previous embodiments, if the first connecting channel 201, the second connecting channel 202 and the third connecting channel 203 are in a manifold structure, the first port 2011, the second port 2021 and the third port 2031 are generally selected to be disposed on the outer side of the edge cover 23. If the first connection channel 201, the second connection channel 202, and the third connection channel 203 are configured by through holes, the first port 2011, the second port 2021, and/or the third port 2031 may be alternatively disposed on the surface of the first clamping plate 21 or the surface of the second clamping plate 22, specifically, on the surface of the first clamping plate 21 or the surface of the second clamping plate 22, and may be determined according to the positions of the first connection channel 201, the second connection channel 202, and the third connection channel 203. In other embodiments, at least one of the first port 2011, the second port 2021, and the third port 2031 may be disposed on the outer side of the rim 23, and at least one of the first port 2021, and the third port 2031 may be disposed on a surface of the first clamping plate 21 or a surface of the second clamping plate 22, that is, at least one of the first connecting channel 201, the second connecting channel 202, and the third connecting channel 203 may be selected to be a manifold structure, and at least one of the first connecting channel, the second connecting channel, and the third connecting channel 203 may be selected to be a through hole structure, which may be selected according to actual needs.

In one embodiment, the first port 2011 and the third port 2031 can be selectively arranged on the same surface of the closed bag 200, the directions of inputting the stock solution and discharging the residual solution are opposite, the stress of the whole bag-type filtering device is partially offset, and the vibration generated when the bag-type filtering device works is reduced to a certain extent; alternatively, the second port 2021 and the third port 2031 may be provided on opposite surfaces of the sealing bladder 200.

Since the first port 2011 is used for inputting the raw liquid, the mode of inputting the raw liquid from bottom to top is more favorable for discharging the gas or residual liquid in the filter membrane module 100, and is favorable for improving the filtering effect, and therefore, in the above embodiment, the height position of the first port 2011 may be selected to be lower than the height position of the third port 2031 during use. In another embodiment, the first port 2011 and the third port 2031 may be disposed on different surfaces of the closed bag, for example, the first port 2011 is disposed on the first clamping plate 21, the third port 2031 is disposed on the second clamping plate 22, and the second clamping plate 22 faces upward when the closed bag is used, so that the height of the first port 2011 is lower than the height of the third port 2031, and for example, the first port 2011 is disposed on the second clamping plate 22, the third port 2031 is disposed on the first clamping plate 21, and the first clamping plate 21 faces upward when the closed bag is used, or the height of the first port 2011 is lower than the height of the third port 2031.

The second embodiment:

in another embodiment, as shown in fig. 28, the edge 23 comprises a first portion 231 and a second portion 232 which are separated, the first portion 231 is integrated with the first clamping plate 21, the second portion 232 is integrated with the second clamping plate 22, and the first portion 231 and the second portion 232 are fixedly connected, so that the first clamping plate 21 and the second clamping plate 22 clamp the filter membrane pack 100. In a specific assembling process, the first part 231 is assembled with the first clamping plate 21 to form an integral structure, the second part 232 is assembled with the second clamping plate 22 to form an integral structure, and then the first part 231 and the second part 232 are fixedly connected. Since the first portion 231 is assembled with the first clamping plate 21 to form an integral structure, the first cavity 2301 for accommodating and positioning the filter membrane package 100 is formed, which is beneficial to pre-positioning the filter membrane package 100 and improves the assembly efficiency. Similarly, the assembly of the second portion 232 with the second clamping plate 22 into a unitary structure also defines a second cavity 2302 that receives and positions the filter membrane package 100, and also facilitates the pre-positioning of the filter membrane package 100.

Other contents not described in the present embodiment may refer to the above-described embodiment.

In addition, the edge 23 can be processed into an integral structure with the first clamping plate 21 or the second clamping plate 22.

In addition to the above preferred embodiments, the present invention also provides other embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the claimed invention.

Claims (16)

1. The bag type filtering device comprises a filtering film package and a closed bag, wherein the filtering film package is provided with two opposite end surfaces, a first through hole, a second through hole and a third through hole which penetrate through the two end surfaces, the sealed bag is characterized by comprising a first clamping plate, a second clamping plate and a covered edge, wherein the first clamping plate and the second clamping plate are respectively clamped on two end faces of the filtering membrane package, the covered edge is annularly arranged on the periphery of the filtering membrane package, the covered edge, the first clamping plate and the second clamping plate are assembled to form the sealed bag for wrapping the filtering membrane package, the sealed bag is provided with a first connecting channel, a second connecting channel and a third connecting channel, a first interface, a second interface and a third interface are arranged on the outer surface of the sealed bag, the first interface is communicated with a first through hole through the first connecting channel and is used for inputting stock solution, the second through hole is communicated with the second interface through the second connecting channel and is used for discharging filtrate, and the third through hole is communicated with the third interface through the third connecting channel and is used for discharging gas and/or liquid.

2. The capsule filter device according to claim 1, wherein the rim is a unitary structure, and the first clamping plate and the second clamping plate are each fixedly connected to the rim to maintain clamping of the filter membrane package.

3. The capsule filter device according to claim 2, wherein the first clamp plate is welded or clamped to the edge; and/or the second clamping plate is fixedly welded or clamped with the covered edge.

4. The capsule filter device according to claim 2, wherein the edge is arranged around the periphery of the first clamping plate, and the surface of the first clamping plate facing away from the filter membrane pack does not protrude from the end face of the edge; and/or the edge is surrounded on the periphery of the second clamping plate, and the surface of the second clamping plate, which is far away from the filter membrane package, does not protrude out of the end surface of the edge.

5. The bladder filter apparatus of claim 1 wherein the rim comprises first and second separate portions, the first portion being integrally formed with the first clamp plate and the second portion being integrally formed with the second clamp plate, the first and second portions being fixedly attached such that the first and second clamp plates clamp the filter membrane pack.

6. The capsule filter device according to claim 1, wherein a first sealing element is arranged between the inlet of the first connecting channel and the first through hole, a second sealing element is arranged between the inlet of the second connecting channel and the second through hole, and a third sealing element is arranged between the inlet of the third connecting channel and the third through hole.

7. The capsule filter device as recited in claim 6, wherein the first, second, and third seals are each separate annular structures; or the inlet of the first connecting channel and the inlet of the second connecting channel are both arranged on the first clamping plate or both arranged on the second clamping plate, and the first sealing element and the second sealing element are of an integrated structure; or the inlet of the first connecting channel and the inlet of the third connecting channel are both arranged on the first clamping plate or the second clamping plate, and the first sealing element and the third sealing element are of an integrated structure; or the inlet of the second connecting channel and the inlet of the third connecting channel are both arranged on the first clamping plate or both arranged on the second clamping plate, and the second sealing element and the third sealing element are of an integrated structure; or the inlet of the first connecting channel, the inlet of the second connecting channel and the inlet of the third connecting channel are arranged on the first clamping plate or the second clamping plate, and the first sealing element, the second sealing element and the third sealing element are of an integrated structure.

8. The capsule filter device according to claim 1, wherein a first sealing gasket covering the end face of the filter membrane package is arranged between the first clamping plate and the filter membrane package, and the first clamping plate presses the first sealing gasket against the end face of the filter membrane package; and/or a second sealing gasket for covering the end face of the filter membrane package is arranged between the second clamping plate and the filter membrane package, and the second sealing gasket is tightly pressed on the end face of the filter membrane package by the second clamping plate.

9. The bladder filter apparatus of claim 1 wherein the filter membrane module has a first plurality of apertures therethrough, the first connecting passage comprises a first manifold disposed in the first clamp plate or the second clamp plate, the first manifold having an inlet and a plurality of outlets, the inlet of the first manifold being in one-to-one sealed communication with the first plurality of apertures, and the outlet of the first manifold being in one-to-one sealed communication with the first plurality of apertures.

10. The bladder filter apparatus of claim 1 wherein the filter membrane module has a second plurality of apertures therethrough, and wherein the second connecting channel comprises a second manifold disposed in the first clamp plate or the second clamp plate, the second manifold having a plurality of inlets and an outlet, the inlets of the second manifold being in one-to-one sealed communication with the second apertures, and the outlet of the second manifold being in communication with the second port.

11. The bladder filter apparatus of claim 10 wherein the second plurality of through-holes comprises a first plurality of second plurality of through-holes on a same side as the first plurality of through-holes and a second plurality of through-holes on a same side as the third plurality of through-holes, the second manifold comprises a first second manifold and a second manifold, an inlet of the first second manifold is in one-to-one sealed communication with the first plurality of second through-holes, an inlet of the second manifold is in one-to-one sealed communication with the second plurality of second through-holes, the second port is configured to be one and in communication with both an outlet of the first second manifold and an outlet of the second manifold, or the second port is configured to be two and in communication with an outlet of the first second manifold and an outlet of the second manifold, respectively.

12. The capsule filter device according to claim 1, wherein the filter membrane package has a plurality of third through holes, the third connecting channel comprises a third manifold disposed on the first clamping plate or the second clamping plate, the third manifold has a plurality of inlets and an outlet, the inlet of the third manifold is in one-to-one sealed communication with the third through holes, and the outlet of the third manifold is in sealed communication with the third port.

13. The bag-type filtration device according to claim 1, wherein the first connection channel comprises a first connection through hole provided in the first splint or the second splint, one end of the first connection through hole is in sealed connection with the first through hole, and the other end forms a first interface, the second connection channel comprises a second connection through hole provided in the first splint or the second splint, one end of the second connection through hole is in sealed connection with the second through hole, and the other end forms a second interface, the third connection channel comprises a third connection through hole provided in the first splint or the second splint, and one end of the third connection through hole is in sealed connection with the third through hole, and the other end forms a third interface.

14. The capsule filter device according to claim 13, wherein the filter membrane package has one first through hole, two second through holes and one third through hole; or the filtering membrane package is provided with a plurality of first through holes, a plurality of second through holes and a plurality of third through holes, one end of each first connecting through hole covers and is communicated with all the first through holes, one end of each second connecting through hole covers and is communicated with all the second through holes, and one end of each third connecting through hole covers and is communicated with all the third through holes.

15. The bladder filter apparatus of claim 1, wherein the first port, the second port, and the third port are located on an outer side of the rim; or the first interface, the second interface and/or the third interface are/is arranged on one of the surface of the first clamping plate and the surface of the second clamping plate; or at least one of the first interface, the second interface and the third interface is arranged on the outer side surface of the edge cover, and at least one of the first interface, the second interface and the third interface is arranged on the surface of the first clamping plate or the surface of the second clamping plate.

16. The capsule filter apparatus of claim 15, wherein the first port and the third port are disposed on the same surface of the closed capsule; and/or the second interface and the third interface are respectively arranged on two opposite surfaces of the closed bag; and/or the height position of the first interface is lower than that of the third interface.

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