CN219799161U - Filter test system - Google Patents

Abstract

The filter test system comprises a wetting system, an integrity test system, a fixing system and a pipeline system, wherein the wetting system comprises a power device and a water storage device, a circulating loop is formed by the power device, the fixing system and the water storage device, and a plurality of filters can be fixed by the fixing device. The filter test system integrates the wetting system and the integrity test system into a system, reduces repeated installation and is more convenient to use; the utility model forms a circulation loop through the power device, the fixing system and the water storage device, thereby saving solution and reducing cost; the utility model can test a plurality of filters at one time, thereby improving the test efficiency; the fixing system adopts automatic operation, reduces manual operation and is more intelligent; according to the utility model, the liquid is rapidly discharged through the vent, so that the test solution is more convenient to replace and more flexible to use.

Description

Filter test system

Technical Field

The utility model belongs to the technical field of biological pharmacy processes, and particularly relates to a filter testing system.

Background

Filters are widely used in biopharmaceutical process technology and require integrity testing in order to ensure that the filter is performing as required in a sterile process.

Integrity tests can be categorized into destructive tests, including bacterial challenge tests, and non-destructive tests, including bubble point, diffusion flow, water intrusion, and pressure maintenance tests. Different test means are suitable for different types of filters, for example, a small-area filter can only perform a bubble point test, cannot perform a diffusion flow test, a large-area filter needs to perform a diffusion flow test, and reliable data are acquired.

Currently, small area filters are mainly disc filters (also known as disc filters) used for aseptic filtration of small flows of liquids and gases. The dish filter comprises filter membrane, upper cover, lower cover, and the filter membrane holds in the accommodation space that upper cover and lower cover pressfitting formed, and the upper cover includes the inlet, the lower cover includes the liquid outlet, and solution gets into dish filter from the upper cover, discharges from the liquid outlet after the filter membrane filters.

In order to obtain reliable integrity test results, it is required that the pores of the filter membrane are thoroughly filled with the wetting solution when the integrity test is performed, and thus the filter membrane needs to be wetted before the integrity test is performed. The solution is continuously driven into the filter by a power device to wash, so that the filter membrane is completely wetted.

The prior art generally adopts manual configuration wetting system, and wetting system includes water intaking point, pump, trachea, manometer and connecting tube, and this system simple structure, use are nimble, still have following problem:

1. the wetting system is separate from the integrity test system. Wetting and integrity testing are performed in two different sets of systems, and the built pipelines are different, specifically, when wetting is performed, a wetting pipeline needs to be built, and the pipeline is a hose; when carrying out the integrality test, need connect the trachea, the pipeline is connected troublesome, and the operation is complicated, inefficiency.

2. The wetting system is not a circulating pipeline, and is easy to cause insufficient water supply at the inlet end and waste of water resources at the outlet end.

3. The existing wetting system and the integrity test system can only manually clamp one filter at a time, can not realize the test requirement in mass production, and has low test efficiency.

4. The filter installation of the existing wetting system is mainly operated manually, and has low automation degree and low reliability.

Disclosure of Invention

In order to overcome the drawbacks of the prior art, an object of the present utility model is to provide a filter testing system. In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a filter test system, which comprises a wetting system, an integrity test system, a fixing system and a pipeline system, wherein a filter is fixed on the fixing system; the fixing system, the wetting system and the integrity test system are connected through the pipeline system; the fixing system is connected with the wetting system, disconnected with the integrity test system and used for wetting the filter; after wetting is completed, the fixing system is connected with the integrity test system, and the filter is subjected to integrity test.

Preferably, the pipeline system comprises a first pipeline, the integrity test system and the fixing system are connected through the first pipeline, and the first pipeline is provided with a first valve for connecting or disconnecting the integrity test system.

Preferably, the pipeline system further comprises an upstream pipeline, a downstream pipeline and a second pipeline; the wetting system comprises a power device and a water storage device, the filter is connected with the power device through an upstream pipeline, the water storage device is connected with the filter through a downstream pipeline, the power device is connected with the water storage device through a second pipeline, and the upstream pipeline, the downstream pipeline and the second pipeline form a circulating pipeline.

Preferably, the water storage device is a transparent water tank with an open top, the downstream pipeline is provided with a three-way valve, a first port of the three-way valve is connected with the fixing system, a second port of the three-way valve is connected with the bottom of the transparent water tank, and a third port of the three-way valve is inserted into the transparent water tank from the opening of the transparent water tank through a U-shaped pipe.

Preferably, the second pipeline is provided with a second valve for connecting or disconnecting the power device and the water storage device.

Preferably, at least two filters are fixed on the fixing system, the upstream pipeline and the downstream pipeline are provided with an upstream branch pipeline and a downstream branch pipeline corresponding to each filter, and each upstream branch pipeline is provided with a third valve for connecting or disconnecting the power device and each filter.

Preferably, the power device is a power pump with one inlet and one outlet, and each outlet is connected with one filter.

Preferably, the fixing system comprises a first fixing plate, a second fixing plate, a guiding device and a driving device, wherein the driving device controls the first fixing plate to move along the guiding device so as to fix the filter between the first fixing plate and the second fixing plate.

Preferably, the upstream pipeline is provided with a first emptying port, the water storage device is provided with a second emptying port, and the solution in the filter test system is discharged through the first emptying port and the second emptying port.

Preferably, the pipeline system is a gas pipeline.

The filter test system integrates the wetting system and the integrity test system into a system, reduces repeated installation and is more convenient to use; the utility model forms a circulation loop through the power device, the fixing system and the water storage device, thereby saving solution and reducing cost; the utility model can test a plurality of filters at one time, thereby improving the test efficiency; the fixing system adopts automatic operation, reduces manual operation and is more intelligent; according to the utility model, the liquid is rapidly discharged through the vent, so that the test solution is more convenient to replace and more flexible to use. Therefore, the utility model has higher practical value.

Drawings

The various aspects of the present utility model will become more apparent to the reader upon reading the detailed description of the utility model with reference to the accompanying drawings. Wherein,,

FIG. 1 is a diagram of a filter testing system according to one embodiment of the present utility model;

FIG. 2 is a schematic illustration of a fastening system according to one embodiment of the present utility model without clamping a filter;

FIG. 3 is a schematic illustration of a fastening system holding a filter according to one embodiment of the present utility model;

FIG. 4 is a diagram of a filter testing system according to another embodiment of the present utility model;

FIG. 5 is a diagram of a filter testing system according to yet another embodiment of the present utility model;

FIG. 6 is a diagram of a filter wetting system according to an embodiment of the utility model;

FIG. 7 is a diagram of a filter integrity test system in accordance with one embodiment of the present utility model;

reference numerals illustrate:

1: a wetting system; 2: an integrity test system; 3: a fixation system; 4: a pipeline system; 5: a filter;

11: a power device; 12: a water storage device;

121: a second vent;

31: a first fixing plate; 32: a second fixing plate; 33: a guide device; 34: a driving device;

331: a first guide post; 332: a second guide post;

41: a first pipeline; 42: a second pipeline; 43: an upstream line; 44: a downstream line;

411: a first valve;

421: a second valve;

431: a third valve; 432: a first vent;

441: and a three-way valve.

Detailed Description

For a more complete and thorough description of the present utility model, reference should be made to the accompanying drawings and the following detailed description of the utility model. However, it will be understood by those of ordinary skill in the art that the examples provided below are not intended to limit the scope of the present utility model. Furthermore, the drawings are for illustrative purposes only and are not drawn to their original dimensions.

"connected" in the specification includes both direct and indirect connections. The terms "a" and "an" as used in this specification mean two or more. The terms "first," "second," "third," "fourth" and the like in the description and in the claims and in the above drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are 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.

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.

Embodiment one:

referring to fig. 1, the filter testing system of the present embodiment includes a wetting system 1, an integrity testing system 2, a fixing system 3 and a pipeline system 4.

In this embodiment, the filter under test is fixed to the fixing system 3, and the fixing system 3, the wetting system 1 and the integrity test system 2 are connected through the pipeline system 4; in particular, the filter is connected to the wetting system 1, the integrity test system 2 via the pipe system 4.

In this embodiment, the pipe system 4 includes a first pipe 41, the first pipe 41 is provided with a first valve 411, the integrity test system 2 and the fixing system 3 are connected through the first pipe 41, and the first valve 411 is used for connecting or disconnecting the integrity test system 2. The first valve 411 may be a valve, or may be another switching component that may be disconnected or connected. Compared with the prior art, the technical scheme of the embodiment can conveniently disconnect or connect the integrity test system 2, so that the filter test system is rapidly switched between a wetting mode and an integrity test mode, and the use is more convenient.

In this embodiment, the filter is a disc filter, and is composed of a filter membrane, an upper cover and a lower cover, where the filter membrane is accommodated in an accommodating space formed by pressing the upper cover and the lower cover, the upper cover includes a liquid inlet, the lower cover includes a liquid outlet, and the solution enters the disc filter from the upper cover and is discharged from the liquid outlet through the filter membrane. In other embodiments of the utility model, the filter may be of other types.

Referring to fig. 2 and 3, in the present embodiment, the fixing system 3 includes a first fixing plate 31, a second fixing plate 32, a guiding device 33 and a driving device 34, where the second fixing plate 32 is in a fixed state and cannot move, the guiding device 33 is disposed along an axial direction of the second fixing plate 32 and is fixed to the second fixing plate 32, the first fixing plate 31 is movably connected with the guiding device 33, and can move along the guiding device 33 toward or away from the second fixing plate 32, specifically, the driving device 34 controls the first fixing plate 31 to move along the guiding device 33 toward the second fixing plate 32, so as to fix the filter 5 between the first fixing plate 31 and the second fixing plate 32. The first fixing plate 31 and the second fixing plate 32 are arranged along the horizontal direction, the first fixing plate 31 is arranged above the second fixing plate 32, a first groove and a solution outlet are formed in the bottom of the first fixing plate 31, a second groove opposite to the first groove and a solution inlet opposite to the solution outlet are formed in the top of the second fixing plate 32, the filter 5 is placed in an accommodating space formed by the first groove and the second groove, the accommodating space can ensure the stability of the position of the filter when the wetting or the integrity test is performed, and larger displacement or shaking cannot be generated, so that the effect on the result of the wetting or the integrity test is avoided; the liquid inlet of the filter 5 is communicated with the solution inlet, the liquid outlet of the filter 5 is communicated with the solution outlet, and the solution outlet and the solution inlet are connected with the pipeline system 4; the solution enters the filter 5 from the solution inlet through the liquid inlet through the pipeline system 4, wets the filter, and is discharged from the liquid outlet through the solution outlet. Specifically, the guiding device 33 includes a first guide post 331 and a second guide post 332 symmetrically fixed on two sides of the second fixing plate 32, the first guide post 331 and the second guide post 332 may be a screw rod, a linear sliding rail, or other devices for guiding the movement of the first fixing plate 31, the first fixing plate 31 is movably connected with the first guide post 331 and the second guide post 332, two sides of the first fixing plate 31 are provided with driving devices 34, specifically, the driving devices 34 may be air cylinders or servo motors, and the driving devices 34 control the first fixing plate 31 to move along the first guide post 331 and the second guide post 332 to press with the second fixing plate 32, so that the filter 5 is fixed between the first fixing plate 31 and the second fixing plate 32, and no leakage or gas leakage occurs when the filter is subjected to wetting or integrity test.

In this example, the filter needs to be wetted before the integrity test is performed, so that the pores of the filter membrane are thoroughly filled with the wetted solution to obtain reliable integrity test results. Specifically, when the filter is wetted, the fixing system 3 is disconnected from the integrity test system 2 through the first valve 411, the wetting system 1 is started, the solution is controlled to continuously enter the filter 5 in the fixing system 3 from the wetting system 1 through the pipeline system 4, the filter is washed and then discharged until the pores of the filter membrane of the filter 5 are thoroughly filled with the wetted solution, and the requirement of the integrity test is met. After the filter 5 is wetted, the fixing system 3 is connected with the integrity test system 2 through the first valve 411, the integrity test system 2 is started, and the filter 5 is subjected to integrity test. In particular, the fixation system 3 may be arranged to hold only one filter or at least two filters. Compared with the prior art, the fixing system 3 of the embodiment reduces manual operation, and the driving device 34 is adopted to control the first fixing plate 31 to move, so that the filter 5 is rapidly clamped or released, and the intelligent fixing system is more intelligent.

Embodiment two:

the embodiment provides a filter testing system, please refer to fig. 4, the system includes a wetting system 1, an integrity testing system 2, a fixing system 3 and a pipeline system 4, wherein the wetting system 1 includes a power device 11 and a water storage device 12, the pipeline system 4 includes a first pipeline 41, a second pipeline 42, an upstream pipeline 43 and a downstream pipeline 44, the first pipeline 41 is provided with a first valve 411, the second pipeline 42 is provided with a second valve 421, the upstream pipeline 43 is provided with a third valve 431, the downstream pipeline 44 is provided with a three-way valve 441, the upstream pipeline 43 is further provided with a first emptying port 432, and the water storage device 12 is provided with a second emptying port 121.

In this embodiment, the filter to be tested is fixed to the fixing system 3, and the fixing system 3 may hold only one filter or may hold two or more filters.

In this embodiment, the power unit 11 is a pump, and specifically, the power unit 11 may be a power frequency pump, a variable frequency pump (a diaphragm pump, a magnetic pump, a peristaltic pump, a rotor pump, etc.), or a pneumatic pump.

In this embodiment, the integrity test system 2 is connected to the fixing system 3 through the first pipeline 41, and the first valve 411 is used to connect or disconnect the integrity test system 2 to or from the fixing system 3; specifically, the integrity test system 2 is disconnected when the filter is wetted, and the integrity test system 2 is connected after wetting is completed.

In this embodiment, the power unit 11 is connected to the water storage unit 12 through the second pipeline 42, and the second valve 421 is used to connect or disconnect the power unit 11 to the water storage unit 12.

In this embodiment, the filter is connected to the power unit 11 through the upstream line 43, and the third valve 431 is used to connect or disconnect the filter to or from the power unit 11.

In this embodiment, the water storage device 12 is connected to the filter via the downstream line 44, and the three-way valve 441 is used to switch between different lines when the filter is subjected to a wetting or integrity test.

In this embodiment, the water storage device 12 is a transparent water tank with an open top, a first port of the three-way valve 441 is connected with the fixing system 3, a second port is connected with the bottom of the transparent water tank, a third port is inserted into the transparent water tank from the opening of the transparent water tank through a U-shaped tube, and defective products are resolved by observing bubbles discharged from the U-shaped tube.

In this embodiment, the second pipeline 42, the upstream pipeline 43 and the downstream pipeline 44 form a circulation pipeline, specifically, the power device 11 drives the solution to enter the fixing system 3 through the upstream pipeline 43, then enter the water storage device 12 through the downstream pipeline 44 after passing through the filter, and then enter the power device 11 from the water storage device 12 through the second pipeline 42, so as to form a circulation pipeline, and by adopting the technical scheme of this embodiment, on one hand, the solution can be recycled, and compared with the prior art, the cost is saved; on the other hand, by adopting a circulating pipeline, the solution is continuously input into the power device 11, and the problem of insufficient water supply of the power device 11 does not occur.

In the present embodiment, the upstream pipe 43 is provided with a first vent 432 for discharging the solution in the upstream pipe 43; the water storage device 12 is provided with a second drain 121 for discharging the solution in the water storage device 12. Specifically, when the solution needs to be replaced, the power device 11 is started to assist in discharging most of the solution in the pipeline system 4, the residual solution at the upstream of the filter can be rapidly discharged through the first discharging port 432, and the residual solution at the downstream of the filter can be rapidly discharged through the second discharging port 121.

In this embodiment, the pipe system is an air pipe, so that the solution or air is conveyed according to a set path after entering the pipe system. In particular, the gas pipe is routed to input high-pressure gas, so that the pressure resistance is better, and the pipeline system 4 adopts a gas pipeline, and can be used for introducing gas and conveying liquid.

In this embodiment, the solution may be water, or may be other solutions such as alcohol or alcohol solution, and the type of the solution may be selected according to the type of the filter and the test requirement.

Embodiment III:

the present embodiment provides a filter testing system, please refer to fig. 5, which includes a wetting system, an integrity testing system 2, a fixing system 3 and a pipeline system.

In this embodiment, the fixing system 3 clamps at least two disc filters, and compared with the prior art, the technical solution of this embodiment can test multiple filters at a time, so that the efficiency is higher; the components and structures of the fixing system 3 are referred to as a first embodiment, and are not described herein.

In this embodiment, the wetting system includes a power device 11 and a water storage device 12, specifically, the power device 11 is a self-circulation power pump P001 with one inlet and one outlet, which provides power for solution to enter the disc filter, and each outlet is connected with a filter. In other embodiments of the present utility model, a plurality of power pumps may be provided according to the number of filters, each power pump being connected to one filter; the water storage device 12 is a transparent water tank V001 with an open top.

In this embodiment, the integrity test system 2 comprises an integrity tester by which the disc filter is subjected to a bubble point test. Specifically, when the disc filter is wetted, the solution fills the pores of the filter membrane to form a liquid film due to the action of surface tension, when the integrity detection is carried out, gas with certain pressure is applied to the upstream of the disc filter, when the surface tension of the solution is overcome, the solution reserved by the membrane pores of the filter membrane passes through the pores of the filter membrane due to compression, the liquid film with the largest membrane pore is most easily blown through under certain pressure level, a large number of bubbles are discharged at the downstream of the disc filter, and by adopting the principle, the pressure is gradually increased to a certain value in the bubble point test, and the good products and the bad products of the filter tested at this time are judged by observing the bubbles discharged from the downstream of the filter.

Specifically, the bubble point test requires accurate control of the upstream air supply pressure, air supply passage time, and air supply flow, thereby detecting the integrity of the disc filter and generating a correlation curve and report.

In this embodiment, the pipe system is a gas pipe that is convenient to detach, so that the solution or air is conveyed according to a set path after entering the pipe system. In particular, the gas pipe is routed to input high-pressure gas, so that the pressure resistance is better, and the pipeline system 4 adopts a gas pipeline, and can be used for introducing gas and conveying liquid.

In this embodiment, the pipe system includes a first ball valve B01, a second ball valve B02, a third ball valve B03, a fourth ball valve B04, a fifth ball valve B05, a sixth ball valve B06, a seventh ball valve B07, and an eighth ball valve B08.

In this embodiment, the pipeline system further includes a first upstream ball valve BA01a … … nth upstream ball valve BANNa, a first downstream three-way ball valve BA01b … … nth downstream three-way ball valve BANNb corresponding to each filter;

in this embodiment, the pipe system further includes a first vent 432 and a second vent 121.

In this embodiment, the pipeline system further includes an online filter Y01, a first stop valve J01, a second stop valve J02, a first pressure gauge PI01, and a second pressure gauge PI02.

In this embodiment, the power pump P001, the on-line filter Y01, the second ball valve B02, the eighth ball valve B08, and the first ball valve B01 form a self-circulation loop, and the solution may sequentially pass through the on-line filter Y01, the second ball valve B02, the eighth ball valve B08, and the first ball valve B01 from the power pump P001 and then flow back into the power pump P001, where the first pressure gauge PI01 is disposed between the on-line filter Y01 and the second ball valve B02 through the first stop valve J01. Specifically, the online filter Y01 is configured to filter the solution at the outlet end of the power pump P001, so as to ensure the cleanliness of the solution entering the filter, on one hand, prevent the solution containing impurities from damaging the filter, and on the other hand, increase the recycling frequency of the solution, thereby further reducing the cost; specifically, the first pressure gauge PI01 is configured to display the pressure of the power pump P001, monitor the state of the power pump P001 in real time, and the first stop valve J01 is configured to protect the first pressure gauge PI01, and when the first pressure gauge PI01 needs to be replaced or overhauled, the first pressure gauge PI01 can be quickly disconnected through the first stop valve J01, and in addition, when the first stop valve J01 is properly opened or closed, the pressure can be prevented from exceeding the range of the first pressure gauge PI01, so that the first pressure gauge PI01 is damaged, and the function of protecting the first pressure gauge PI01 is achieved.

In this embodiment, the power pump P001 is connected to the transparent water tank V001 through the first ball valve B01 and the fourth ball valve B04, specifically, the first ball valve B01 is used for preventing the amount of solution passing through per unit time from exceeding the power of the power pump P001 excessively, and on the other hand, when the power pump P001 is damaged, the power pump P001 is disconnected rapidly, so that the power pump P001 is convenient to be overhauled, and the solution in the pipeline system is prevented from running off; the fourth ball valve B04 is used for rapidly disconnecting the transparent water tank V001 and controlling the solution in the transparent water tank V001 to enter the pipeline system.

In this embodiment, the pipeline system includes an upstream main pipeline, an upstream branch pipeline, and a downstream branch pipeline.

In this embodiment, the power pump P001 is connected to the fixing system 3 through an upstream main pipeline and upstream branch pipelines corresponding to the number of filters, one end of each upstream branch pipeline is respectively connected to the upstream main pipeline, and the other end is connected to each filter; after the solution enters the upstream main pipeline from the power pump P001, the solution enters the upstream branch pipelines corresponding to the filters respectively, and enters the filters through the fixing system 3. The sixth ball valve B06 is disposed in the upstream main pipeline, and is configured to connect or disconnect the power pump P001 to or from the fixing system 3; the Nth upstream ball valve BANNa of the first upstream ball valve BA01a … … is respectively arranged on each upstream branch pipeline and is used for disconnecting the power pump P001 from each filter; the third ball valve B03 is disposed in the upstream main pipeline, and is configured to open or close the first vent 432.

In this embodiment, each filter is connected to the transparent water tank V001 through a downstream branch pipe, the N-th downstream three-way ball valve BANNb of the first downstream three-way ball valve BA01b … … is disposed in each downstream branch pipe, and the solution is discharged into the transparent water tank V001 from each downstream branch pipe after entering each filter. The downstream three-way ball valves BANNb of the first downstream three-way ball valve BA01b … … and the N downstream three-way ball valve BANNb of the first downstream three-way ball valve BA01b … … comprise three ports, namely a port, b port and c port, wherein the port a is connected with a liquid outlet of each filter, the port b is connected with the bottom of the transparent water tank V001, the port c is inserted into the transparent water tank V001 from an opening of the transparent water tank V001 through a U-shaped pipe, and when the integrity test is carried out, a large number of bubbles can be discharged from the downstream of the filter with unqualified quality through the U-shaped pipe under certain pressure, so that the filter with unqualified quality is accurately positioned.

In other embodiments of the present utility model, each downstream branch pipeline may be collected as a downstream main pipeline, where the downstream main pipeline includes a three-way ball valve, where the three-way ball valve includes three ports, a, b, c, a and a ports are respectively connected to each filter through the downstream main pipeline, b ports are connected to the bottom of the transparent water tank V001, c ports are inserted into the transparent water tank V001 through a U-shaped pipe from an opening of the transparent water tank V001, and after the solution is discharged from each filter, the solution enters the transparent water tank V001 through each downstream branch pipeline and the downstream main pipeline through the U-shaped pipe, where when the integrity test is performed, under a certain pressure, the U-shaped pipe discharges air bubbles, so that it can be determined that there is a defective filter at this time, and then the current filter can be individually detected one by one to determine the defective filter.

In this embodiment, the integrity tester is connected to the upstream main pipeline through the seventh ball valve B07, the second pressure gauge PI02 is disposed between the integrity tester and the seventh ball valve B07 through the second stop valve J02, and the second pressure gauge PI02 is configured to display a pressure applied by the integrity tester on an upstream side of the filter, so as to intuitively determine air tightness of the upstream side of the filter. When the second pressure gauge PI02 needs to be replaced or overhauled, the second pressure gauge PI02 can be rapidly disconnected through the second stop valve J02, in addition, the second stop valve J02 can be properly opened and closed, so that the pressure can be prevented from exceeding the range of the second pressure gauge PI02, the second pressure gauge PI02 is damaged, and the function of protecting the second pressure gauge PI02 is achieved.

In this embodiment, the fifth ball valve B05 is disposed at the bottom of the transparent water tank V001, and is used to open or close the second air outlet 121.

Embodiment four:

the use process of the filter testing system described in the third embodiment is described in this embodiment, so as to further describe the technical solution of the present utility model. The method mainly comprises the steps of filter installation, wetting, integrity test and solution replacement, and specifically comprises the following steps:

1. filter installation

(1) Please refer to fig. 2, which is a schematic diagram of the fixing system not clamping the filter, and fig. 3, which is a schematic diagram of the fixing system clamping the filter. Before the system is started, all ball valves are in a closed state. The filter to be tested is placed in a recess of the second fixing plate 32 of the fixing system 3.

(2) Pressing the down button of the driving device 34 to move the first fixing plate 31 downward along the guiding device 33 from the first position in fig. 2 to the second position in fig. 3 until pressing the first fixing plate 32, wherein each filter is accommodated in an accommodating space formed by the grooves of the first fixing plate 31 and the second fixing plate 32, and the accommodating space can ensure the stability of the position of each filter when wetting or integrity test is performed, and cannot generate larger displacement or shake so as not to influence the wetting or test result; the liquid inlet of each filter is communicated with each solution inlet of the first fixing plate 31, and the liquid outlet of each filter is communicated with each solution outlet of the second fixing plate 32.

2. Filter wetting

(1) Referring to fig. 6, when wetting is performed, the integrity test system is disconnected and the transparent water tank V001 is filled with a solution satisfying the minimum working volume of the system operation.

(2) The first ball valve B01, the second ball valve B02, the fourth ball valve B04 and the eighth ball valve B08 are opened.

(3) And starting the power pump P001, and adjusting the eighth ball valve B08 to ensure that the outlet pressure of the power pump P001 is within a safe range, wherein at the moment, the solution enters the power pump P001 from the transparent water tank V001 through the first ball valve B01 and the fourth ball valve B04.

(4) And closing the fourth ball valve B04, and enabling the solution to flow back into the power pump P001 through the online filter Y01, the second ball valve B02 and the eighth ball valve B08, so as to form a self-circulation loop of the power pump P001.

(5) After the power pump P001 self-circulates for a period of time, the eighth ball valve B08 is closed, the fourth ball valve B04 and the sixth ball valve B06 are opened, at the moment, self-circulation is stopped, meanwhile, the upstream ball valve BA01a … … BANNa is opened, the port of the downstream three-way ball valve BA01B … … BANNb is regulated, the port a and the port B are communicated, the port c is not communicated, at the moment, solution enters the power pump P001 from the transparent water tank V001 through the fourth ball valve B04 and the first ball valve B01, then enters an upstream main pipeline through the online filter Y01, the second ball valve B02 and the sixth ball valve B06, enters each upstream branch pipeline through the upstream ball valve BA01a … … BANNa, thus entering each filter, after flushing each filter, enters the transparent water tank V001 through the port B of the downstream three-way ball valve BA01B … … BANNb, and then enters the power pump P001 from the transparent water tank V001, and thus circulating flushing is formed. The flow rate of the solution required for the system can be adjusted by adjusting the rotational speed of the power pump P001.

(6) After a period of time, after wetting of each filter is completed, the power supply of the power pump P001 is turned off, and the second ball valve B02 is turned off.

3. Integrity test

(1) Referring to fig. 7, the ports of the three-way ball valve BA01b … … BANNb are adjusted to satisfy the a-port, c-port on and b-port off states.

(2) Starting an integrity detector, opening a seventh ball valve B07, enabling compressed gas to enter an upstream main pipeline through the integrity detector through the seventh ball valve B07 and a sixth ball valve B06, and then entering each upstream branch pipeline through an upstream ball valve BA01a … … BANNa, so that after entering each filter, the compressed gas enters the transparent water tank V001 through a U-shaped pipe through a c port of a downstream three-way ball valve BA01B … … BANNb, and judging that the quality of a filter corresponding to the U-shaped pipe is unqualified through observing bubbles discharged by the U-shaped pipe in the transparent water tank V001, and at the moment, closing the upstream ball valve of the unqualified filter so as not to influence the integrity test of other filters.

(3) After the test is finished, the quality qualified filter and the unqualified filter are separated.

4. Replacement solution

(1) The filter testing system of this embodiment may employ different solutions, such as water or alcohols. When the solution needs to be replaced, firstly discharging the solution in the pipeline system, specifically opening a fifth ball valve B05, and discharging the solution in the transparent water tank V001 from a second vent 121;

(2) Opening the third ball valve B03, the upstream ball valve BA01a … … BA0Na and the downstream ball valve BA01B … …

BA0Nb, draining most of the solution in the piping system through the first drain 432;

(3) After the solution in the transparent water tank V001 is discharged, the power pump P001 is turned on with a proper rotation speed, the upstream ball valve BA01a … … BA0Na is turned off, and the remaining solution in the pipe system is discharged through the first discharge port 432.

(4) When the solution in the piping system is empty, new solution can be injected into the transparent water tank V001, and the operation is performed according to the above-mentioned wetting and integrity test steps.

The filter test system integrates the wetting system and the integrity test system into a system, reduces repeated installation and is more convenient to use; the utility model forms a circulation loop through the power device, the fixing system and the water storage device, thereby saving solution and reducing cost; the utility model can test a plurality of filters at one time, thereby improving the test efficiency; the fixing system adopts automatic operation, reduces manual operation and is more intelligent; according to the utility model, the liquid is rapidly discharged through the vent, so that the test solution is more convenient to replace and more flexible to use. Therefore, the utility model has higher practical value.

It should be understood that the foregoing examples of the present utility model are merely illustrative of the present utility model and not limiting of the embodiments of the present utility model, and that various other changes and modifications can be made by those skilled in the art based on the foregoing description, and the present utility model is not intended to be exhaustive of all of the embodiments, and all obvious changes and modifications that come within the scope of the utility model are defined by the following claims. All documents mentioned in this disclosure are incorporated by reference in this disclosure as if individually incorporated by reference.

Claims (10)

1. A filter testing system, the system comprising a wetting system, an integrity testing system, a securing system, and a tubing system, wherein:

a filter is fixed to the fixation system;

the fixing system, the wetting system and the integrity test system are connected through the pipeline system;

the fixing system is connected with the wetting system, disconnected with the integrity test system and used for wetting the filter;

after wetting is completed, the fixing system is connected with the integrity test system, and the filter is subjected to integrity test.

2. The filter testing system of claim 1, wherein the piping system comprises a first piping through which the integrity testing system is connected to the fixture system, the first piping being provided with a first valve for connecting or disconnecting the integrity testing system.

3. The filter testing system of any one of claims 1 or 2, wherein the piping system further comprises an upstream piping, a downstream piping, and a second piping; the wetting system comprises a power device and a water storage device, the filter is connected with the power device through an upstream pipeline, the water storage device is connected with the filter through a downstream pipeline, the power device is connected with the water storage device through a second pipeline, and the upstream pipeline, the downstream pipeline and the second pipeline form a circulating pipeline.

4. The filter testing system of claim 3, wherein the water storage device is a transparent water tank with an open top, the downstream pipeline is provided with a three-way valve, a first port of the three-way valve is connected with the fixing system, a second port of the three-way valve is connected with the bottom of the transparent water tank, and a third port of the three-way valve is inserted into the transparent water tank from the opening of the transparent water tank through a U-shaped pipe.

5. A filter testing system according to claim 3, wherein the second conduit is provided with a second valve for connecting or disconnecting the power means to the water storage means.

6. The filter testing system of claim 4, wherein at least two filters are fixed to the fixing system, the upstream and downstream pipelines are provided with upstream and downstream branch pipelines corresponding to the filters, and each upstream branch pipeline is provided with a third valve for connecting or disconnecting the power device with the filters.

7. The filter testing system of claim 6, wherein the power device is a multiple inlet and multiple outlet power pump, each outlet being connected to a filter.

8. The filter testing system of claim 1, wherein the securing system comprises a first securing plate, a second securing plate, a guide, and a drive that controls movement of the first securing plate along the guide to secure the filter between the first securing plate and the second securing plate.

9. A filter testing system according to claim 3, wherein the upstream line is provided with a first vent and the water storage means is provided with a second vent through which the solution in the filter testing system is discharged.

10. The filter testing system of claim 1, wherein the piping system is an air line.