Filter membrane particle removal efficiency testing device

Abstract

The utility model relates to the technical field of particle testing, and discloses a filter membrane particle removal efficiency testing device which comprises a digital display magnetic stirrer capable of adjusting temperature and stirring speed, and a liquid storage bottle, the utility model discloses a filter membrane particle removal efficiency testing device, which comprises a digital display peristaltic pump for providing continuous liquid movement power, a sampling valve for sampling a stock solution, a digital display pressure gauge for monitoring pressure parameters in a fluid movement process, a connecting silica gel hose and a filter membrane clamp, and is reasonable in assembly and matching, very convenient in sample mounting and sample testing, high in testing speed, accurate in testing result and high in reliability. The repeatability and the relinearity are good; meanwhile, the testing efficiency is high, the required sample amount is very small, the working efficiency is greatly improved, and the testing cost is remarkably reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of particle testing, in particular to a filter membrane particle removal efficiency testing device. Background Art

[0002] As we all know, in the liquid filtration and separation industry, during the development of pleated filter elements, the particle removal efficiency of the filter element needs to be tested and verified to ensure that the particle efficiency of the filter element product can meet the specific needs of the product or customers; usually in the liquid filtration and separation industry, since direct efficiency testing and verification of the filter element is a destructive test, the process of making filter element samples is complicated, the material cost is high, the testing time is long, and the testing operation requires professional technicians to operate professional equipment, and the test results need to be sorted and analyzed; therefore, the particle removal efficiency test of the filter element is time-consuming and laborious; but the particle removal efficiency of the filter element needs to be tested and verified; considering all of the above factors, in the early stage of product development, the product developers in the filtration and separation industry optimized the method: first, by testing the particle removal efficiency of the filter membrane, and then selecting the core materials needed for the development of the filter element.

[0003] The filter element product development cycle is long and the cost of filter element development is high; therefore, it is necessary to solve this technical problem. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a filter membrane particle removal efficiency testing device, which solves the problems raised in the above-mentioned background technology.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a filter membrane particle removal efficiency testing device, comprising a digital magnetic stirrer capable of adjusting temperature and stirring speed, a liquid storage bottle, a digital peristaltic pump providing power for continuous liquid movement, a sampling valve for sampling stock solution, a digital pressure gauge for monitoring pressure parameters during fluid movement, a connecting silicone hose, a filter membrane clamp, and a stainless steel pipe tee and a stainless steel pipe connecting the sampling valve and the digital pressure gauge; a first bracket and a second bracket, the stainless steel bracket is fixed to an aluminum-plated iron plate by screws; the remaining parts are connected to the stainless steel pipe through a first three-way valve, a second three-way valve, and a third three-way valve; and are connected to the stainless steel pipe through a silicone hose and a pagoda connector and locked; the other end of the silicone hose is passed into the liquid storage bottle; similarly, the pagoda connector and the filter membrane clamp are connected through a silicone hose.

[0008] Preferably, the liquid storage bottle is located on the magnetic stirring platform on the digital display magnetic stirrer.

[0009] Preferably, the first three-way valve, the second three-way valve, and the third three-way valve are all made of 316L stainless steel.

[0010] Preferably, the sampling valve is connected to the digital display pressure gauge through a hose.

[0011] Preferably, the cross-section of the aluminized iron plate is rectangular.

[0012] Preferably, the filter membrane fixture consists of an upper fixture, a filter membrane, and a lower fixture, and the upper fixture is provided with a connecting member.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, the present utility model provides a test device for the removal efficiency of filter membrane particles, which has the following beneficial effects:

[0015] For the test device for the removal efficiency of filter membrane particles, the configured simulated liquid storage bottle is placed on the magnetic stirring platform of the digital display magnetic stirrer. By adjusting the temperature and stirring speed, the simulated liquid reaches a certain temperature and stirring state. Stirring can prevent the precipitation of particles or nanoparticles dissolved in the simulated liquid. Open the digital display peristaltic pump, adjust a certain pump speed, and then set the required stable test flow rate, so that the simulated liquid passes through the filter membrane to be tested at a stable and constant flow rate. At the same time, observe the pressure value on the digital display pressure gauge. After 30 s from the start of the test, when the test flow rate is stable, read the value on the digital display pressure gauge. The pressure value of the digital display pressure gauge at this time is the initial pressure difference ΔP of the filter membrane. After 60 s when the flow rate is stable, take a sample from the sampling valve, and take the taken original liquid sample to the particle counter analyzer for detecting the number of particles in the original liquid. Then, respectively, every 120 s, take samples from the filter membrane fixture, take 3 samples in parallel, and detect the number of particles of the same particle size. Then input the data into the prepared EXCEL table respectively. The EXCEL table will automatically calculate the PFE result. The test device has a simple structure, reasonable assembly and matching, is very convenient for installing and testing samples, has a fast test speed, accurate test results, good repeatability and reproducibility; at the same time, it has high test efficiency and requires very little sample volume, greatly improving work efficiency and significantly reducing test costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is a schematic structural diagram of the filter membrane fixture of the present utility model;

[0018] Figure 3 is a schematic internal structural diagram of the filter membrane fixture of the present utility model.

[0019] In the figure: 1. Digital magnetic stirrer; 2. Liquid storage bottle; 3. Silicone hose; 4. Digital peristaltic pump; 5. Pagoda connector; 6. First three-way valve; 7. Second three-way valve; 8. Sampling valve; 9. Digital pressure gauge; 10. Third three-way valve; 12. Filter membrane fixture; 13. First bracket; 14. Second bracket; 15. Aluminum-plated iron plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figures 1-3 The utility model provides a technical solution: the filter membrane particle removal efficiency test device includes a digital magnetic stirrer 1 that can adjust the temperature and stirring speed, a liquid storage bottle 2, a digital peristaltic pump 4 that provides continuous liquid movement power, a sampling valve 8 for sampling the stock solution, a digital pressure gauge 9 for monitoring the pressure parameters during the fluid movement, a connecting silicone hose 3, a filter membrane fixture 12, and a stainless steel pipe tee and a stainless steel pipe connecting the sampling valve 8 and the digital pressure gauge 9; a first bracket 13 and a second bracket 14, the stainless steel bracket is fixed to the aluminum-plated iron plate 15 by screws; the remaining parts are connected to the stainless steel pipe through the first three-way valve 6, the second three-way valve 7, and the third three-way valve 10; and are connected to the stainless steel pipe through the silicone hose 3 and the pagoda connector 5 and locked; the other end of the silicone hose 3 is passed into the liquid storage bottle 2; similarly, the pagoda connector 5 and the filter membrane fixture 12 are connected through the silicone hose 3;

[0022] Through the above, the configured simulated liquid storage bottle 2 is placed on the magnetic stirring platform of the digital display magnetic stirrer 1. By adjusting the temperature and stirring speed, the simulated liquid reaches a certain temperature and stirring state. Stirring can prevent the precipitation of particles or nanoparticles dissolved in the simulated liquid. Open the digital display peristaltic pump 4 and adjust a certain pump speed, and then set the required test stable flow rate, so that the simulated liquid passes through the filter membrane to be tested at a stable and constant flow rate. At the same time, observe the pressure value on the digital display pressure gauge 9. After 30 s from the start of the test, when the test flow rate is stable, read the value on the digital display pressure gauge 9. The pressure value of the digital display pressure gauge 9 at this time is the initial pressure difference ΔP of the filter membrane. After the flow rate is stable for 60 s, take a sample from the sampling valve 8, and take the original liquid sample obtained to a particle counter analyzer for detecting the number of particles in the original liquid. Note: The sample is taken to a liquid particle counter for detection, and the liquid particle counter is not included in the test device. Then, every 120 s, take samples from the filter membrane clamp 12, and take 3 parallel samples for detecting the number of particles of the same particle size. Then input the data into the prepared EXCEL table respectively. The EXCEL table will automatically calculate the PFE (Particle Filtration Efficiency) result. The structure of this test device is simple, the assembly is reasonable, it is very convenient to install and test samples, the test speed is fast, the test results are accurate, the repeatability and reproducibility are good; at the same time, the test efficiency is high, the required sample volume is very small, which greatly improves the work efficiency and significantly reduces the test cost.

[0023] In the present utility model, the liquid storage bottle 2 is located on the magnetic stirring platform of the digital display magnetic stirrer 1.

[0024] In the present utility model, the first three-way valve 6, the second three-way valve 7 and the third three-way valve 10 are all made of 316L stainless steel, which can effectively increase the strength of the first three-way valve 6, the second three-way valve 7 and the third three-way valve 10 and reduce the situation of shortened service life.

[0025] In the present utility model, the sampling valve 8 is communicated with the digital display pressure gauge 9 through a hose, which can effectively enable the sampling valve 8 to transport the sample into the digital display pressure gauge 9 and improve the convenience.

[0026] In the present utility model, the cross section of the aluminized iron plate 15 is rectangular.

[0027] In the present utility model, the filter membrane clamp 12 is composed of an upper clamp, a filter membrane and a lower clamp. The upper clamp is provided with a connecting member, which can effectively fix and clamp the filter membrane and improve the firmness of the filter membrane.

[0028] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A test device for the particle removal efficiency of a filter membrane, characterized in that: The invention comprises a digital magnetic stirrer (1) capable of adjusting temperature and stirring speed, a liquid storage bottle (2), a digital peristaltic pump (4) for providing continuous liquid movement power, a sampling valve (8) for sampling raw liquid, a digital pressure gauge (9) for monitoring pressure parameters during fluid movement, a connecting silicone hose (3), a filter membrane fixture (12), and a first three-way valve (6), a second three-way valve (7), a third three-way valve (10) and a stainless steel pipe connecting the sampling valve (8) and the digital pressure gauge (9); a first bracket (13) and a second bracket (14), wherein the stainless steel bracket is fixed to an aluminum-plated iron plate (15) by screws; the remaining parts are connected to the stainless steel pipe by the first three-way valve (6), the second three-way valve (7) and the third three-way valve (10); and are connected to the stainless steel pipe by the silicone hose (3) and the pagoda connector (5) and locked; the other end of the silicone hose (3) is connected to the liquid storage bottle (2); similarly, the pagoda connector (5) and the filter membrane fixture (12) are connected by the silicone hose (3).

2. The filter membrane particle removal efficiency testing device according to claim 1, wherein: The liquid storage bottle (2) is located on the magnetic stirring platform on the digital display magnetic stirrer (1).

3. The test device for the particle removal efficiency of a filter membrane according to claim 2, wherein: The first three-way valve (6), the second three-way valve (7) and the third three-way valve (10) are all made of 316L stainless steel.

4. The test device for the removal efficiency of filter membrane particles according to claim 3, wherein: The sampling valve (8) is connected to the digital pressure gauge (9) via a hose.

5. The filter membrane particle removal efficiency testing device according to claim 4, wherein: The aluminum-plated iron plate (15) has a rectangular cross section.

6. The test device for the particle removal efficiency of a filter membrane according to claim 5, characterized in that: The filter membrane fixture (12) consists of an upper fixture, a filter membrane and a lower fixture, and the upper fixture is provided with a connecting piece.

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