Membrane bag replacing structure of tangential flow filtering device

Abstract

The utility model belongs to the technical field of tangential flow filtration, and particularly relates to a membrane bag replacement structure of a tangential flow filtration device, which comprises a membrane bag and a membrane bag filtration box, the upper end of the membrane bag filtration box is open, and a membrane bag mounting component is arranged in the membrane bag filtration box in a vertical sliding manner; the membrane package installation assembly comprises an inverted-T-shaped plate located in the membrane package filter box, sliding grooves are formed in the two sides of the bottom of the inverted-T-shaped plate, sliding plates are arranged in the sliding grooves in a sliding mode, springs are arranged between one ends of the sliding plates and the side walls of the sliding grooves, U-shaped clamping plates are fixed to the other ends of the sliding plates, the U-shaped clamping plates abut against the side walls of the membrane package filter box, and the membrane packages are installed between the U-shaped clamping plates and the inverted-T-shaped plate. The U-shaped clamping plate driven by the spring is linked with the inverted-T-shaped plate, clamping and releasing of the film bag can be completed without tools, when the inverted-T-shaped plate is lifted upwards, the spring automatically pushes the clamping plate to be separated, the film bag can be reset after being pressed downwards after being replaced, and bolt screwing or complex operation is not needed in the whole process.

Description

TECHNICAL FIELD

[0001] The utility model belongs to tangential flow filtration technical field, concretely relates to a membrane package replacement structure of tangential flow filtration device. BACKGROUND

[0002] Tangential flow refers to the filtering form that the liquid flow direction is perpendicular to the filtering direction, and the tangential flow filter is a kind of process test instrument commonly used in biological and pharmaceutical fields, which can be used for product concentration, dialysis (desalination, dealcoholization, etc.), buffer replacement, and can replace centrifuge to collect cells and remove cell debris from fermentation tank.

[0003] The current tangential flow filtration device is filtered by membrane package when in use, for example, Chinese patent publication No. CN219376358U discloses a biological pharmaceutical chromatography filter membrane package clamp, and the filter membrane package is sealed by the clamp, the clamp clamping plate and spacer are both flat plate structures, and the membrane package needs to be replaced by the staff by unscrewing multiple hexagonal bolts, which is more troublesome to operate. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a membrane package replacement structure of tangential flow filtration device to solve the problems proposed in the background art.

[0005] To achieve the above technical purpose, the utility model adopts the following technical scheme:

[0006] A membrane package replacement structure of tangential flow filtration device, comprising a membrane package and a membrane package filtration box, the membrane package filtration box is open at the upper end, and a membrane package installation assembly is slidably arranged inside the membrane package filtration box up and down;

[0007] The membrane package installation assembly comprises an inverted T-shaped plate located in the membrane package filtration box, sliding grooves are formed in the bottom of both sides of the inverted T-shaped plate, a sliding plate is slidably arranged in the sliding grooves, springs are arranged between one end of the sliding plate and the side wall of the sliding groove, a U-shaped clamping plate is fixed to the other end of the sliding plate, the U-shaped clamping plate abuts against the side wall of the membrane package filtration box, and the membrane package is installed between the U-shaped clamping plate and the inverted T-shaped plate.

[0008] The membrane package filtration box is fixed with guide plates on the left and right sides of the upper end, the guide plates are composed of inclined plates and straight plates, the inclined plates are inclined outward, and the straight plates are fixed to the upper end of the inclined plates.

[0009] The upper end of the membrane package filtration box is hingedly connected with a cover plate.

[0010] The upper end of the inverted T-shaped plate is provided with a pull rope.

[0011] The front end of the membrane package filtration box is fixed with a lock catch, and the cover plate is provided with a lock tongue matched with the lock catch.

[0012] The lower side of the cover plate is provided with a sealing gasket.

[0013] The reverse T-shaped plate is provided with a limiting assembly between the reverse T-shaped plate and the membrane package filter box.

[0014] The limiting assembly comprises a strip-shaped slot formed on both sides of the front side of the reverse T-shaped plate, a plurality of multi-stage telescopic rods fixed in the strip-shaped slot and connected with the upper wall of the strip-shaped slot.

[0015] The membrane package filter box is provided with a liquid inlet interface on the left side and a liquid outlet interface on the right side, and the two U-shaped clamping plates are provided with a material passing port, the left material passing port is matched with the liquid inlet interface, the right material passing port is matched with the liquid outlet interface, and the reverse T-shaped plate is provided with a through slot matched with the material passing port.

[0016] The utility model discloses a spring drive's U-shaped clamping plate and reverse T-shaped plate linkage, and the membrane package clamping and release can be completed without tools, when pulling up the reverse T-shaped plate, the spring automatically pushes the clamping plate and separates, and after replacing the membrane package, the clamping plate can be reset by pressing down, and the whole process does not need to twist the bolt or complicated operation. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model can be further illustrated by the non-limiting embodiment shown in the drawings.

[0018] Figure 1 Structure diagram of the membrane package replacement structure of the tangential flow filter device Figure 1 ;

[0019] Figure 2 Structure diagram of the membrane package replacement structure of the tangential flow filter device Figure 2 ;

[0020] Figure 3 Sectional structure diagram of the membrane package replacement structure of the tangential flow filter device Figure 1 ;

[0021] Figure 4 Sectional structure diagram of the membrane package replacement structure of the tangential flow filter device Figure 2 ;

[0022] Figure 5 Structure diagram of the membrane package installation assembly.

[0023] The main element symbol is explained as follows:

[0024] Membrane package 0, membrane package filter box 1, guide plate 11, inclined plate 111, straight plate 112, cover plate 12, lock tongue 121, lock catch 13, multi-stage telescopic rod 14, liquid inlet interface 15, liquid outlet interface 16, material passing port 17, inverted T-shaped plate 2, pull rope 201, strip-shaped groove 202, sliding groove 21, sliding plate 22, spring 23, U-shaped clamping plate 24. DETAILED DESCRIPTION

[0025] In order for those skilled in the art to better understand the present application, the technical scheme of the present application is further described below in combination with the drawings and examples.

[0026] As Figures 1-5 shown, the membrane package replacement structure of the tangential flow filtration device of the present application comprises a membrane package 0 and a membrane package filter box 1, the membrane package filter box 1 is open at the upper end, and a membrane package mounting assembly is slidably arranged inside the membrane package filter box 1;

[0027] The membrane package mounting assembly comprises an inverted T-shaped plate 2 located inside the membrane package filter box 1, sliding grooves 21 are formed on both sides of the bottom of the inverted T-shaped plate 2, sliding plates 22 are slidably arranged in the sliding grooves 21, springs 23 are arranged between one end of the sliding plates 22 and the side walls of the sliding grooves 21, U-shaped clamping plates 24 are fixed to the other end of the sliding plates 22, the U-shaped clamping plates 24 abut against the side walls of the membrane package filter box 1, and the membrane package 0 is mounted between the U-shaped clamping plates 24 and the inverted T-shaped plate 2;

[0028] Guide plates 11 are fixed to both sides of the upper end of the membrane package filter box 1, the guide plates 11 are composed of inclined plates 111 and straight plates 112, the inclined plates 111 are outwardly inclined, and the straight plates 112 are fixed to the upper ends of the inclined plates 111;

[0029] The cover plate 12 is hingedly connected to the upper end of the membrane package filter box 1.

[0030] The conventional tangential flow filtration device is a process test instrument commonly used in the fields of biology and pharmacy, which can be used for product concentration, dialysis (desalination, dealcoholization, etc.), buffer replacement, and can replace a centrifuge to collect cells and remove cell debris from a fermentation tank;

[0031] The membrane package 0 is a membrane separation technology that uses the pressure difference on both sides of the filter membrane as the power, and the pore structure of the filter membrane as the core to realize separation, purification and refining. Among them, the tangential flow filtration is a new type of filtration method, the material flow direction is perpendicular to the filtration direction, so that the material continuously washes the surface of the filter membrane during the filtration process, avoiding the formation of filter cake layer or gel layer on the surface of the filter membrane, thereby maintaining the filtration efficiency of the filter membrane;

[0032] The filter membrane package in the common tangential flow filtration device, such as Chinese Patent Publication No. CN219376358U, discloses a biopharmaceutical chromatography filtration membrane package clamp. The filter membrane package is sealed by the clamp. The clamp plate and the spacer are both flat plate structures. During the replacement process of the filter membrane package, the worker needs to unscrew multiple hexagonal bolts, which is relatively troublesome to operate.

[0033] In the present application, the membrane package 0 is installed between the U-shaped clamp plate 24 and the inverted T-shaped plate 2. At this time, the U-shaped clamp plate 24 can stably clamp the membrane package 0 between the two under the limitation of the membrane package filter box 1. The cover plate 12 covers the upper end of the membrane package filter box 1 to increase the sealing of the device.

[0034] When the membrane package 0 is installed in the membrane package filter box 1, the spring 23 will be compressed, and the sliding plate 22 connected to the U-shaped clamp plate 24 is accommodated in the sliding groove 21.

[0035] When replacing the membrane package 0, the worker first opens the cover plate 12 upward, and then slides the inverted T-shaped plate 2 upward until the inverted T-shaped plate 2 completely leaves the membrane package filter box 1, and the end of the U-shaped clamp plate 25 does not abut against the side wall of the membrane package filter box 1. At this time, the elastic force of the spring 23 will push the sliding plate 22 to slide in the sliding groove 21, so that the two U-shaped clamp plates 25 move away from each other, i.e. in the direction away from the inverted T-shaped plate 2. The bottom of the U-shaped clamp plate 25 will contact the inclined plate 111, which can limit the U-shaped clamp plate 25 to slowly open during upward movement, so as to reduce the excessive shaking of the membrane package 0 and prevent the membrane package 0 from falling downward. Finally, the end of the U-shaped clamp plate 25 abuts against the straight plate 112, and the sliding of the inverted T-shaped plate 2 upward is stopped. The elastic force of the spring 23 can push the U-shaped clamp plate 25 to tightly contact the straight plate 112, so that the membrane package installation assembly can be kept at this position. The worker does not need to use the hand to control the position of the membrane package installation assembly, which is convenient for the worker to replace the membrane package.

[0036] Since the U-shaped clamp plate 25 is away from the inverted T-shaped plate 2, the space between them will increase, i.e. the U-shaped clamp plate 25 does not clamp the membrane package 0 at this time. The worker can take down the membrane package 0 and replace a new membrane package 0 between the U-shaped clamp plate 25 and the inverted T-shaped plate 2. After the replacement of the membrane package is completed, the worker only needs to push the membrane package installation assembly downward.

[0037] During the downward movement of the inverted T-shaped plate 2, the lower end of the U-shaped clamp plate 25 will contact the inclined plate 111, overcoming the elastic force of the spring 23, and pushing the U-shaped clamp plate 25 to gradually approach the inverted T-shaped plate 2 until the lower end of the U-shaped clamp plate 25 extends into the membrane package filter box 0. At this time, the U-shaped clamp plate 25 clamps and fixes the membrane package 0, and the outer side abuts against the side wall of the membrane package filter box 0. The inverted T-shaped plate 2 is completely pushed into the membrane package filter box 0, and finally the cover plate 12 is covered to complete the installation.

[0038] The utility model discloses, when replacing the film package, only need to slide the film package installation assembly upwards, utilize the spring's elastic force to be able to open the U -shaped clamping plate 25 automatically, cancel the clamping of film package, only need to slide the film package installation assembly downwards after replacing the new film package, can automatically clamp the film package, simple operation.

[0039] The upper end of the inverted T-shaped plate 2 is provided with a pull rope 201; the pull rope 201 can facilitate the staff to pull the inverted T-shaped plate 2 upwards, that is, facilitate the film package installation assembly to be pulled out of the film package filter box 1 upwards, and facilitate the replacement of the film package.

[0040] The front end of the film package filter box 1 is fixedly provided with a lock catch 13, and the cover plate 12 is provided with a lock tongue 121 matched with the lock catch 13; when the cover plate 12 is placed on the upper side of the film package filter box 1, the lock tongue 121 can be connected with the film package filter box 1 by extending into the lock catch 13.

[0041] The lock catch 13 and the lock tongue 121 can be a spring lock tongue, which is a locking device capable of achieving automatic pop-in / pop-out function through an internal spring; the core principle is to utilize the elastic deformation and reset characteristics of the spring and combine a mechanical trigger structure to complete the extension and retraction control of the lock tongue.

[0042] Generally, the lock catch 13 on the button or the knob is pressed to push the lock tongue 121 to overcome the spring force and retract into the guide groove, and the tongue 121 is separated from the hole of the lock catch 13, so that the cover plate 12 can be freely opened; the above-mentioned technology is a conventional technical means in the application.

[0043] The lower side of the cover plate 12 is provided with a sealing gasket; when the cover plate 12 is buckled on the upper side of the film package filter box 1, the sealing gasket can increase the sealing property between the two, and improve the overall sealing property of the device.

[0044] Further, the sealing gasket can be made of silica gel.

[0045] The inverted T-shaped plate 2 and the film package filter box 1 are provided with a limiting assembly therebetween.

[0046] The limiting assembly comprises a strip-shaped groove 202 formed on the front side of the inverted T-shaped plate 2, and the film package filter box 1 is fixedly provided with a multi-stage telescopic rod 14 located in the strip-shaped groove 202; the upper end of the multi-stage telescopic rod 14 is connected with the upper wall of the strip-shaped groove 202.

[0047] When the staff replaces the film package 0, the inverted T-shaped plate 2 needs to be slid upwards; the inverted T-shaped plate 2 and the film package filter box 1 are connected through the multi-stage telescopic rod 14; the maximum telescopic distance of the multi-stage telescopic rod 14 is the position where the bottom of the U-shaped clamping plate 24 contacts the straight plate 112, so that the inverted T-shaped plate 2 cannot continue to move upwards, and at the same time, the inverted T-shaped plate 2 cannot be deviated frontward and rearward, thereby effectively limiting the inverted T-shaped plate 2.

[0048] Two straight plates 112 inside can increase the setting friction pad, the U-shaped clamp plate 24 end contacts with the straight plate 112, and the friction pad can increase the friction, the film package installation assembly can be more stably kept in the position, and the worker is facilitated to carry out the replacement work.

[0049] The membrane package filter box 1 left side is equipped with liquid inlet 15, the membrane package filter box 1 right side is equipped with liquid outlet 16, two U-shaped clamp plates 24 are equipped with the material port 17, left material port 17 is matched with liquid inlet 15, right material port 17 is matched with liquid outlet 16, and the middle part of the inverted T-shaped plate 2 is equipped with the through slot matched with the material port 17;

[0050] Left material port 17 is matched with liquid inlet 15, solution can enter into left membrane package through left material port 17, is filtered to solution through membrane package for the first time, is contacted with right membrane package through the through slot subsequently, carries out second filtration, and finally is discharged from right material port 17 and liquid outlet 16 membrane package filter box 1.

[0051] The above embodiment is only illustrative of the principle and effect of the present application, and is not used to limit the present application. Any person skilled in the art can modify or change the above embodiment without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical concept disclosed by the present application should be covered by the claims of the present application.

Claims

1. A membrane pack replacement structure of a tangential flow filtration device, comprising a membrane pack and a membrane pack filtration tank, characterized by: The membrane bag filtering box is provided with an opening at the upper end, and a membrane bag mounting assembly is slidably arranged inside the membrane bag filtering box; The membrane bag mounting assembly comprises an inverted T-shaped plate arranged inside the membrane bag filtering box, and a sliding groove is formed in the bottom of the inverted T-shaped plate, a sliding plate is slidably arranged in the sliding groove, a spring is arranged between one end of the sliding plate and the side wall of the sliding groove, a U-shaped clamping plate is fixed to the other end of the sliding plate, the U-shaped clamping plate abuts against the side wall of the membrane bag filtering box, and the membrane bag is mounted between the U-shaped clamping plate and the inverted T-shaped plate. Guide plates are fixed to the upper end of the membrane bag filtering box, the guide plates are composed of inclined plates and straight plates, the inclined plates are outwardly inclined, and the straight plates are fixed to the upper end of the inclined plates. A cover plate is hingedly connected to the upper end of the membrane bag filtering box.

2. A membrane pack replacement structure for a tangential flow filtration device according to claim 1, wherein: A pull rope is arranged at the upper end of the inverted T-shaped plate.

3. The membrane pack replacement structure of a tangential flow filtration device according to claim 1, characterized in that: A lock catch is fixed to the front end of the membrane bag filtering box, and a lock tongue matched with the lock catch is arranged on the cover plate.

4. The membrane pack replacement structure of a tangential flow filtration device according to claim 1, characterized by: A sealing gasket is arranged on the lower side of the cover plate.

5. The membrane pack replacement structure of a tangential flow filtration device according to claim 1, characterized in that: A limiting assembly is arranged between the inverted T-shaped plate and the membrane bag filtering box.

6. A membrane pack replacement structure for a tangential flow filtration device according to claim 5, wherein: The limiting assembly comprises a strip-shaped groove formed in the front side of the inverted T-shaped plate, and a multi-stage telescopic rod is fixed to the membrane bag filtering box and arranged in the strip-shaped groove, and the upper end of the multi-stage telescopic rod is connected with the upper wall of the strip-shaped groove.

7. The membrane pack replacement structure of a tangential flow filtration device according to claim 1, characterized in that: A liquid inlet is arranged on the left side of the membrane bag filtering box, a liquid outlet is arranged on the right side of the membrane bag filtering box, each U-shaped clamping plate is provided with a material passing port, the left material passing port is matched with the liquid inlet, the right material passing port is matched with the liquid outlet, and a through groove matched with the material passing port is arranged in the middle of the inverted T-shaped plate.

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