Fixing assembly, fixing device and deep filtering assembly

Abstract

A fixing assembly comprises a connecting piece and an inserting piece, the outer side edge of a membrane bag is fixed, it is guaranteed that the distance between every two adjacent membrane bags is consistent, the performance of a deep filtering assembly is improved, meanwhile, a certain correction effect is achieved on plastic deformation of the membrane bags, and when high-turbidity feed liquid is filtered, the invalid filtering area is reduced, and the filtering effect is improved. According to the fixing device, the inner side and the outer side of the film bag are fixed at the same time through the fixing assembly and the center fixing assembly, the structure is simple, and operation is convenient. The deep filtering assembly is stable in structure, convenient to assemble and high in filtering efficiency.

Description

Technical Field

[0001] The utility model belongs to the field of biopharmaceutical process technology, and specifically relates to a fixing component, a fixing device and a deep filtering component. Background Art

[0002] Filters are crucial equipment in the biopharmaceutical process, used to remove impurities from liquid feeds during the process. Depending on the application scenario, filters come in various types, including capsule filters and depth filters. Depth filters come in a variety of designs and structures, with membrane stack depth filters being the most commonly used.

[0003] A membrane stack depth filter comprises a liquid inlet, a liquid outlet, and a membrane package. The membrane package comprises a rubberized sheet and a deep filter paperboard secured to the sheet. Multiple membrane packages form a stacked unit. Specifically, steel straps or plastic components are used to secure the multiple membrane packages together along their central axis, sealing the inlet and outlet channels of the entire membrane stack. Existing technologies present the following problems:

[0004] (1) During the injection molding process, a single membrane package will undergo local deformation. During the assembly of the membrane stack, due to slight differences in the sizes of different membrane packages, the cumulative tolerance of the entire membrane stack increases, making the spacing distribution between each membrane package inconsistent. During the filtration process, the flow rate of liquid entering each membrane package varies, resulting in a decrease in filtration performance. In severe cases, the single membrane package may deform and open.

[0005] (2) After the membrane stack is sterilized at a high temperature of about 120°, the plastic deformation of the rubber sheet is very large. After the stress of the entire membrane stack is completely released, the edge of the rubber sheet becomes warped.

[0006] (3) When filtering high-turbidity liquid, due to the inconsistent deformation of each membrane package, the filter paperboard in some membrane packages fits too tightly with the adjacent filter paperboard. After the filtration is completed, the area of ​​some paperboards becomes ineffective, affecting the filtration performance of the product.

[0007] (4) The membrane stack is round and difficult to fix during placement.

[0008] (5) The membrane stack is fixed from the central axis by using steel belts or plastic clips. The force is concentrated on the central axis, causing the membrane stack to partially warp around the periphery and create gaps between adjacent membrane packages, affecting the sealing of the entire membrane stack. Summary of the Invention

[0009] In order to overcome the defects of the prior art, one purpose of the present invention is to provide a fixing assembly, another purpose of the present invention is to provide a fixing device, and yet another purpose of the present invention is to provide a deep filter assembly. In order to achieve the above-mentioned purposes, the technical solutions adopted by the present invention are as follows:

[0010] One aspect of the present invention provides a fixing assembly, including a connecting piece and a plug-in piece, the plug-in piece is vertically arranged on the connecting piece, the plug-in piece includes a first plug-in piece and a second plug-in piece, the first plug-in piece is respectively provided at both ends of the connecting piece, the second plug-in piece is arranged between the first plug-in pieces at both ends, the first plug-in piece and the second plug-in piece are arranged at equal distances along the connecting piece, and the first plug-in piece and the adjacent second plug-in piece and the adjacent second plug-in piece respectively form grooves with the connecting piece for clamping the edge of the outer side of the film package.

[0011] Optionally, the first connector includes a first fixing member and a first clamping member, one end of the first fixing member is fixed to the connecting member, and extends to the other end in a direction perpendicular to the connecting member and is connected to the first clamping member for clamping the edge of the outer side of the membrane package.

[0012] Optionally, the second connector includes a second fixing member and a second clamping member, one end of the second fixing member is fixed to the connecting member, and extends to the other end in a direction perpendicular to the connecting member and is connected to the second clamping member for clamping the edge of the outer side of the membrane package.

[0013] Optionally, the first clamping member cooperates with the second clamping member or is adjacent to the second clamping member to clamp the edge of the outer side of the membrane package.

[0014] Optionally, the edge of the membrane package includes a fixing hole, the side of the first clamp facing the membrane package includes a first protrusion, and both sides of the second clamp include a second protrusion, the first protrusion and the second protrusion are inserted into the fixing hole of the membrane package, or the adjacent second protrusion is inserted into the fixing hole of the membrane package to clamp the edge of the outer side of the membrane package.

[0015] Optionally, the connecting piece forms the bottom of the groove, and the bottom of the groove is provided with a transition groove for reducing the thickness of the bottom of the groove.

[0016] The second aspect of the present invention provides a fixing device, comprising at least three fixing components as described above, wherein the fixing components are arranged at equal distances along the outer edge of the membrane package and are engaged with the membrane package to fix the outer edge of the membrane package.

[0017] Optionally, the fixing device further comprises a central fixing component, and the central fixing component is used to fix the inner side of the membrane package.

[0018] Optionally, the central fixing assembly includes a sealing ring, a steel belt and a support joint, the steel belt is used to fix the inner side of the membrane package, and the sealing ring and the support joint are used to fix both ends of the steel belt.

[0019] The third aspect of the present invention provides a deep filtration assembly, comprising at least two membrane packages and the aforementioned fixing device, wherein the fixing device is used to clamp the inner and outer sides of the membrane packages so that the longitudinal distances between adjacent membrane packages are equal.

[0020] The utility model fixes the outer edge of the membrane package through a fixing assembly, ensuring that the spacing between adjacent membrane packages is consistent, improving the performance of the deep filtration assembly, and at the same time has a certain corrective effect on the plastic deformation of the membrane package. When filtering high-turbidity liquid, it reduces the failed filtration area and improves the filtration effect. In addition, it can prevent the circular membrane stack from rotating, facilitating the placement of the deep filtration assembly. The fixing device of the utility model fixes the inner and outer sides of the membrane package through a fixing assembly and a central fixing assembly, and has a simple structure and is easy to operate. The deep filtration assembly of the utility model has a stable structure, is easy to assemble, has high filtration efficiency, and has high practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] After reading the detailed embodiments of the present invention with reference to the accompanying drawings, readers will have a clearer understanding of the various aspects of the present invention.

[0022] Figure 1 This is a structural diagram of a fixing assembly according to an embodiment of the present invention;

[0023] Figure 2 This is a partial enlarged view of a fixing assembly according to an embodiment of the present invention;

[0024] Figure 3 Figure 1 is a structural diagram of a deep filter assembly according to an embodiment of the present invention;

[0025] Figure 4 Figure 2 is a structural diagram of a deep filter assembly according to an embodiment of the present invention;

[0026] Description of reference numerals:

[0027] 1: Fixed component; 2: Membrane package; 3: Central fixed component;

[0028] 11: Connector; 12: Connector;

[0029] 111: transition groove;

[0030] 121: first connector; 122: second connector; 123: groove;

[0031] 1211: first fixing member; 1212: first clamping member; 1213: first protrusion; 1221: second fixing member; 1222: second clamping member; 1223: second protrusion;

[0032] 21: filter paperboard; 22: flow channel screen; 23: outer plastic bag;

[0033] 231: fixing hole;

[0034] 31: Sealing ring; 32: Steel belt; 33: Support joint. DETAILED DESCRIPTION

[0035] To provide a more detailed and complete understanding of the technical content disclosed in this application, reference is made to the accompanying drawings and the following specific embodiments of the present invention. However, those skilled in the art should understand that the embodiments provided below are not intended to limit the scope of the present invention. Furthermore, the accompanying drawings are for illustrative purposes only and are not drawn to scale.

[0036] "Connected" in the specification includes both direct connection and indirect connection. "Several" and "multiple" in the specification refer to two or more. The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0037] The technical solution of the present invention is described in detail below. The following embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0038] Example 1:

[0039] This embodiment provides a fixing assembly 1 for fixing the outer edge of the membrane package of the deep filtration assembly. Figure 1 、 Figure 2 The fixing component 1 includes a connecting member 11 and a plug-in member 12, the connecting member 11 includes a transition groove 111, the plug-in member 12 includes a first plug-in member 121 and a second plug-in member 122, the first plug-in member 121 includes a first fixing member 1211 and a first clamping member 1212, and the second plug-in member 122 includes a second fixing member 1221 and a second clamping member 1222.

[0040] In this embodiment, the connector 12 is vertically arranged on the connecting member 11. Specifically, the first connectors 121 are respectively provided at both ends of the connecting member 11, and the second connector 122 is provided between the first connectors 121 at both ends. Specifically, the number of the second connectors 122 can be set according to the number of membrane packages of the deep filtration component. In this embodiment, there are 7 second connectors 122, and the fixing component 1 can fix 8 membrane packages.

[0041] In this embodiment, the first connector 121 and the second connector 122 are arranged at equal distances along the connector 11. A groove 123 is formed between the first connector 121 and the adjacent second connector 122, and between the first connector 121 and the adjacent second connector 122, respectively, and the connector 11 for clamping the outer edge of the membrane package. Specifically, the first connector 121 or the second connector 122 forms two sides of the groove 123, and the connector 11 forms the bottom of the groove 123. Specifically, the outer edge of the membrane package is clamped with the groove 123, the width of the groove 123 is consistent with the thickness of the membrane package, and the second connector 122 is inserted between adjacent membrane packages to ensure that the longitudinal distance between adjacent membrane packages is equal, thereby making the flow rate of liquid entering each membrane package consistent and improving the filtration efficiency.

[0042] In this embodiment, one end of the first fixing member 1211 is fixed to the connecting member 11, and extends in a direction perpendicular to the connecting member 11 to the other end, connected to the first clamping member 1212, for clamping the outer edge of the membrane package. One end of the second fixing member 1221 is fixed to the connecting member 11, and extends in a direction perpendicular to the connecting member 11 to the other end, connected to the second clamping member 1222, for clamping the outer edge of the membrane package.

[0043] In this embodiment, the first clamping member 1212 cooperates with the second clamping member 1222, or the adjacent second clamping member 1222 cooperates to clamp the outer edge of the membrane package. Specifically, when the groove 123 is formed by the first plug-in connector 121, the second plug-in connector 122, and the connector 11, the first clamping member 1212 cooperates with the second clamping member 1222 to secure the outer edge of the membrane package; when the groove 123 is formed by the adjacent second plug-in connector 122 and the connector 11, the second clamping member 1222 of the adjacent second plug-in connector 122 cooperates to secure the outer edge of the membrane package.

[0044] See also Figure 4In this embodiment, the edge of the membrane package includes fixing holes 231. Specifically, the fixing holes 231 are equidistantly spaced along the outer edge of the membrane package 2. The first clamping member 1212 includes a first protrusion 1213 on the side facing the membrane package 2, and the second clamping member 1222 includes a second protrusion 1223 on both sides. The first protrusion 1213 and the adjacent second protrusion 1223 are inserted into the fixing holes 231 of the membrane package 2, or the adjacent second protrusion 1223 are inserted into the fixing holes 231 of the membrane package 2, thereby securing the outer edge of the membrane package 2. In other embodiments of the present invention, the membrane package 2 is not provided with fixing holes, but a descending step is provided on the outer edge of the membrane package 2. The first clamping member 1212 and the adjacent second clamping member 1222, or the adjacent second clamping member 1222, secure the outer edge of the membrane package 2 by engaging the descending step.

[0045] In this embodiment, the connecting member 11 forms the bottom of the groove 123, and the bottom of the groove 123 is provided with a transition groove 111, which is used to reduce the thickness of the bottom of the groove 123 and to make the bottom of the groove 123 have a certain elasticity to facilitate the installation of the fixing component 1.

[0046] Example 2:

[0047] This embodiment provides a fixing device, comprising at least three fixing components 1 as described in the first embodiment, see Figure 3 、 Figure 4 In this embodiment, the fixing device includes four fixing components 1 and a central fixing component 3. The fixing components 1 are arranged at equal distances along the outer edge of the membrane package 2, and are engaged with the outer edge of the membrane package 2 to fix the outer edge of the membrane package 2. The central fixing component 3 is used to fix the inner side of the membrane package 2. The fixing device of this embodiment fixes the inner and outer sides of the membrane package 2 simultaneously through the fixing components 1 and the central fixing component 3. Compared with the fixing method used in the prior art in which the force is concentrated on the central axis of the membrane package, the fixing method of this embodiment can prevent the outer edge of the membrane package from warping, and can also ensure that the longitudinal distance between the membrane packages is consistent, thereby ensuring the efficiency of filtration. In addition, the fixing component 1 can also make the membrane package 2 less likely to roll when placed, and more stable.

[0048] In this embodiment, the central fixing assembly 3 includes a sealing ring 31 , a steel belt 32 and a support joint 33 . The steel belt 32 is used to fix the inner side of the membrane package 2 , and the sealing ring 31 and the support joint 33 are used to fix both ends of the steel belt 32 .

[0049] Example 3:

[0050] This embodiment provides a deep filtration assembly, comprising at least two membrane packages and the fixing device described in the third embodiment. Figure 3 、 Figure 4 The fixing device includes a fixing assembly 1 and a central fixing assembly 3. The deep filtration assembly includes eight membrane packages 2. The fixing device includes four fixing assemblies 1. The fixing assembly 1 includes two first connectors 121 and seven second connectors 122. The fixing device is used to clamp the inner and outer sides of the membrane packages 2 so that the longitudinal distances between adjacent membrane packages are equal. In other embodiments of the present invention, the number of fixing assemblies 1 and the number of membrane packages 2 can be set according to actual needs, and the number of first connectors 121 and second connectors 122 can be set according to the number of membrane packages 2.

[0051] In this embodiment, the membrane package 2 includes a filter paperboard 21, a flow channel screen 22 and an outer rubber coating 23. In this embodiment, the membrane package 2 includes two layers of the filter paperboard 21, the flow channel screen 22 is arranged between the two layers of the filter paperboard 21, and the outer rubber coating 23 coats the two layers of the filter paperboard 21 and the flow channel screen 22 to obtain the membrane package 2.

[0052] In this embodiment, the outer rubber cover 23 forms the outer edge of the membrane package 2 , and the fixing holes 231 are provided in the outer rubber cover 23 .

[0053] Example 4:

[0054] This embodiment provides the assembly process of the deep filter assembly described in Example 3 to further illustrate the technical solution of the present invention. The assembly steps of the deep filter assembly are as follows:

[0055] (1) placing multiple membrane packages 2 in a stacked manner;

[0056] (2) The three steel belts 32 are used in conjunction with the support joints 33 to connect the multiple membrane packages 2 up and down, that is, to fix the membrane package 2 from the center.

[0057] (3) Install the four fixing components 1 on the stacked membrane packages 2. Specifically, the first fixing component 1211 of the first connector 121 at one end of the connector 11 is pressed against the membrane package 2 at one end of the deep filtration component, and the first protrusion 1213 is inserted into the fixing hole 231 of the membrane package 2. A certain pulling force is applied to the connector 11 to cause a certain deformation of the transition groove 111, so that the second clamping component 1222 of the adjacent second connector 122 is inserted into the gap between the two membrane packages 2. At this time, the second protrusion 1223 is also inserted into the fixing hole 231, and cooperates with the first protrusion 1213 to clamp the outer edge of the membrane package 2. In this way, each of the first connector 121 and the second connector 122 is installed on the membrane package 2 in turn until each membrane package 2 is fixed by the fixing component 1, and the installation is completed.

[0058] The utility model fixes the outer edge of the membrane package through a fixing assembly, ensuring that the spacing between adjacent membrane packages is consistent, improving the performance of the deep filtration assembly, and at the same time has a certain corrective effect on the plastic deformation of the membrane package. When filtering high-turbidity liquid, it reduces the failed filtration area and improves the filtration effect. In addition, it can prevent the circular membrane stack from rotating, facilitating the placement of the deep filtration assembly. The fixing device of the utility model fixes the inner and outer sides of the membrane package through a fixing assembly and a central fixing assembly, and has a simple structure and is easy to operate. The deep filtration assembly of the utility model has a stable structure, is easy to assemble, has high filtration efficiency, and has high practical value.

[0059] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other variations or modifications can be made based on the above description. The embodiments listed in the present invention are not exhaustive of all implementation methods. All obvious variations or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention. All documents mentioned in the present invention are cited as references in this application, just as if each document were cited as a reference.

Claims

1. A fixing assembly, characterized in that: The fixing assembly includes a connecting piece and a plug-in piece, the plug-in piece is arranged perpendicularly to the connecting piece, the plug-in piece includes a first plug-in piece and a second plug-in piece, the first plug-in piece is respectively provided at both ends of the connecting piece, the second plug-in piece is arranged between the first plug-in pieces at both ends, the first plug-in piece and the second plug-in piece are arranged at equal distances along the connecting piece, and the first plug-in piece and the adjacent second plug-in piece and the adjacent second plug-in piece respectively form grooves with the connecting piece for clamping the edge of the outer side of the film package.

2. The fixing assembly according to claim 1, wherein: The first connector includes a first fixing member and a first clamping member. One end of the first fixing member is fixed to the connecting member, and extends to the other end in a direction perpendicular to the connecting member and is connected to the first clamping member for clamping the edge of the outer side of the membrane package.

3. The fixing assembly according to claim 2, characterized in that: The second connector includes a second fixing member and a second clamping member. One end of the second fixing member is fixed to the connecting member, and extends to the other end in a direction perpendicular to the connecting member and is connected to the second clamping member for clamping the edge of the outer side of the membrane package.

4. The fixing assembly according to claim 3, characterized in that: The first clamping piece cooperates with the second clamping piece or is adjacent to the second clamping piece to clamp the outer edge of the membrane package.

5. The fixing assembly according to claim 4, characterized in that: The edge of the membrane package includes a fixing hole, the side of the first clamp facing the membrane package includes a first protrusion, and both sides of the second clamp include a second protrusion. The first protrusion and the second protrusion are inserted into the fixing hole of the membrane package, or the adjacent second protrusion is inserted into the fixing hole of the membrane package to clamp the edge of the outer side of the membrane package.

6. The fixing assembly according to claim 1, wherein: The connecting piece forms the bottom of the groove, and the bottom of the groove is provided with a transition groove for reducing the thickness of the bottom of the groove.

7. A fixing device, characterized in that: It comprises at least three fixing components according to any one of claims 1 to 6, wherein the fixing components are arranged at equal distances along the outer edge of the membrane package and are engaged with the membrane package to fix the outer edge of the membrane package.

8. The fixing device according to claim 7, wherein: The fixing device further comprises a central fixing component, and the central fixing component is used to fix the inner side of the membrane package.

9. The fixing device according to claim 8, characterized in that The central fixing assembly includes a sealing ring, a steel belt and a supporting joint. The steel belt is used to fix the inner side of the membrane package, and the sealing ring and the supporting joint are used to fix the two ends of the steel belt.

10. A deep filter assembly, characterized in that It comprises at least two membrane packages and a fixing device according to any one of claims 7 to 9, wherein the fixing device is used to clamp the inner side and the outer side of the membrane package so that the longitudinal distances between adjacent membrane packages are equal.

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