Membrane material liquid blocking capacity testing device and system

Abstract

The utility model discloses a kind of membrane material liquid resistance ability testing device and system, it is related to membrane material testing technical field, including base and high transparency cover plate, the upper surface of the base is arranged with the groove of containing liquid, the surface of the high transparency cover plate is provided with several small holes, the small hole and the groove are communicated;The edge of membrane material is clamped between the base and the high transparency cover plate;The area of the area surrounded by several small holes of outermost side is less than the area of the groove;Base is equipped with with the liquid inlet hole of groove intercommunication, beneficial effect: in the process that mixed solution gradually fills up groove, mixed solution will membrane material adhere to the bottom surface of high transparency cover plate, simultaneously, gas in groove is discharged through the aperture of membrane material, several small holes;Not only can the liquid resistance ability of larger area continuous membrane material be tested simultaneously, test efficiency is greatly improved, and small hole area is small, the deformation of membrane material at small hole can be ignored, and the test data of liquid resistance ability is also more accurate and reliable.

Description

Technical Field

[0001] This utility model relates to the field of membrane material testing technology, and in particular to a membrane material liquid resistance testing device and system. Background Technology

[0002] Currently, during liquid resistance testing of membrane materials, the sheet-like membrane material needs to be mounted in a fixture of a corresponding area, and the fixture area is generally small (1 cm²). 2 ~20cm 2 A smaller test area helps improve the accuracy of liquid resistance test data, especially when the test pressure is high or the membrane material has low tensile strength. When test pressure is applied, an excessively large test area can cause the membrane material to deform, making it impossible to accurately test its liquid resistance.

[0003] To evaluate the liquid-blocking ability of a membrane material, it is necessary to test the liquid-blocking ability at different locations on the membrane material. This results in a large number of samples, each of which needs to be placed in a fixture and then removed after testing in order to test the next sample. The overall testing workload is large, the testing efficiency is low, and the test area is discontinuous, which may affect the accuracy of the liquid-blocking ability.

[0004] Therefore, it is necessary to develop a device and system for testing the liquid resistance of membrane materials. Summary of the Invention

[0005] The purpose of this invention is to disclose a device and system for testing the liquid resistance of membrane materials.

[0006] The first objective of this invention is to provide a device for testing the liquid resistance of membrane materials.

[0007] The second objective of this invention is to provide a system for testing the liquid resistance of membrane materials.

[0008] To achieve the first objective mentioned above, this utility model provides a membrane material liquid resistance testing device, including a base and a highly transparent cover plate. The upper surface of the base is provided with a tank for containing liquid, and the surface of the highly transparent cover plate is provided with a plurality of small holes, which are connected to the tank.

[0009] The edge of the membrane material is sandwiched between the base and the highly transparent cover plate;

[0010] The area enclosed by the outermost few holes is smaller than the area of ​​the groove.

[0011] The base is provided with a liquid inlet hole that communicates with the tank.

[0012] Preferably, the plurality of holes are evenly distributed.

[0013] Preferably, the diameter of the small hole is 2mm-8mm.

[0014] Preferably, the base is made of aluminum alloy or stainless steel.

[0015] Preferably, the high-transparency cover is made of acrylic material.

[0016] Preferably, the bottom surface of the highly transparent cover plate is a plane.

[0017] Preferably, the mixture fills the tank, and the mixture adheres the membrane material to the bottom surface of the high-transparency cover plate.

[0018] Preferably, the air inside the tank is discharged through the pores and several small holes of the membrane material.

[0019] Based on the same inventive principle, in order to achieve the second inventive objective mentioned above, this utility model provides a membrane material liquid resistance testing system, including an air compressor, a first pressure regulating valve, a second pressure regulating valve, and a liquid storage tank.

[0020] The liquid storage tank is connected to the liquid inlet of the membrane material liquid resistance testing device described in the first invention via a pipeline.

[0021] Preferably, the pressure of the first pressure regulating valve is greater than the pressure of the second pressure regulating valve.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] A mixture containing a color developer is injected into the tank through the inlet. Firstly, as the mixture gradually fills the tank, it adheres the membrane material to the bottom surface of the high-transparency cover, while simultaneously expelling gas from the tank through the pores and numerous small holes in the membrane material. Secondly, after the mixture is pressurized to a predetermined pressure, any leakage is observed through the upper surface of the high-transparency cover, allowing for testing of the membrane material's liquid-blocking pressure, liquid-blocking capacity, and the uniformity of its liquid-blocking capacity. Thirdly, the membrane material experiences uniform pressure from the mixture during the liquid-blocking test, enabling simultaneous testing of the liquid-blocking capacity of large-area continuous membrane materials, significantly improving testing efficiency. Furthermore, the small hole area minimizes the deformation of the membrane material at the holes, resulting in more accurate and reliable test data for liquid-blocking capacity. Attached Figure Description

[0024] Figure 1 This is a side view schematic diagram of the membrane material liquid resistance testing device of this utility model.

[0025] Figure 2 This is a top view of the base of this utility model.

[0026] Figure 3 This is a top view schematic diagram of the high-transparency cover plate of this utility model.

[0027] Figure 4 This is a schematic diagram illustrating the pressure boosting principle of the mixed liquid in this invention.

[0028] Figure 5 This is a schematic diagram of the liquid resistance test method for the membrane material of this utility model.

[0029] The components include: 1. Base; 11. Liquid inlet; 2. High-transparency cover plate; 3. Tank; 4. Small hole; 5. Membrane material; 51. Edge; 6. Storage tank; 61. First pressure regulating valve; 62. Second pressure regulating valve; 63. Pipeline; 7. Mixture; 8. Air compressor. Detailed Implementation

[0030] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, it should be noted that these embodiments are not intended to limit the present invention. Equivalent transformations or substitutions in function, method, or structure made by those skilled in the art based on these embodiments are all within the protection scope of the present invention.

[0031] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0032] The specific implementation process of this utility model will be described below through several embodiments.

[0033] Example 1:

[0034] See Figures 1 to 4This embodiment discloses a membrane material liquid resistance testing device (hereinafter referred to as "testing device"), including a base 1 and a high-transparency cover plate 2. The upper surface of the base 1 is provided with a tank 3 for containing liquid. The surface of the high-transparency cover plate 2 is provided with a plurality of small holes 4, which are connected to the tank 3. The edge 51 of the membrane material 5 is sandwiched between the base 1 and the high-transparency cover plate 2. The base 1 and the high-transparency cover plate 2 can be locked around the perimeter with screws. The edge of the membrane material 5 plays a sealing role to prevent leakage. The area A of the area enclosed by the outermost plurality of small holes 4 is smaller than the area B of the tank, so as to facilitate observation of the liquid seepage on the surface of the membrane material and timely discharge of air in the tank 3. The base 1 is provided with a liquid inlet hole 11 connected to the tank 3.

[0035] Specifically, the base 1 is a cuboid-shaped aluminum alloy or stainless steel profile, with a liquid-containing tank 3 located in the center of its upper surface; the high-transparency cover plate 2 is a cuboid-shaped high-transparency acrylic profile with a flat bottom surface to allow the film material 5 to adhere smoothly to the bottom surface of the high-transparency cover plate 2; a plurality of small holes 4 are evenly distributed, the diameter of the small holes 4 being 2mm-8mm, preferably... Figure 3 shown That is, small holes 4 with a diameter of 5mm are evenly distributed in 12*12 on the high transparency cover plate 2, and the small holes 4 penetrate the high transparency cover plate 2 vertically and connect to the groove 3.

[0036] The test procedure for the liquid resistance capability of membrane materials is as follows: See Figure 5 Step S1: Cut the membrane material into a predetermined shape and clamp the edge of the membrane material between the base 1 and the high transparency cover plate 2. The base 1 and the high transparency cover plate 2 are locked around the perimeter with screws to prevent the mixture from leaking out from the gap between the base 1 and the high transparency cover plate 2.

[0037] Step S2: Inject the mixed liquid 7 into the tank 3 through the liquid inlet 11. The mixed liquid 7 contains dissolved color developer. Expel the air in the tank 3 through several small holes 4. The membrane material 5 is attached to the bottom surface of the high transparency cover plate 2, so that each test point of the membrane material 5 is supported by the mixed liquid. This enables simultaneous testing of the liquid resistance of a large area of ​​continuous membrane material at multiple points, greatly improving the testing efficiency. In addition, the small hole area is small, and the deformation of the membrane material at the small hole is negligible, making the test data of liquid resistance more accurate and reliable.

[0038] Step S3: Continue to inject the mixed liquid 7 into the tank 3 through the liquid inlet 11, so that the pressure of the mixed liquid 7 gradually increases. Record the pressure corresponding to the moment when the mixed liquid 7 is observed to seep out from the high transparency cover plate 2, and obtain the liquid resistance pressure of the membrane material 5, which is suitable for testing the instantaneous liquid resistance pressure of the membrane material.

[0039] When it is necessary to test whether the liquid resistance of the membrane material meets the standard, step S3 is carried out according to the following test process: continue to inject the mixed liquid 7 into the tank 3 through the liquid inlet 11, so that the pressure of the mixed liquid 7 gradually increases to the predetermined pressure and is maintained at the predetermined pressure for a predetermined time, such as 5s-30min. If no mixed liquid is observed to seep out from the high transparency cover plate 2, it indicates that the liquid resistance of the membrane material meets the standard. If mixed liquid is observed to seep out from the high transparency cover plate 2, it indicates that the liquid resistance of the membrane material does not meet the standard.

[0040] When it is necessary to determine the uniformity of the membrane material pores, step S3 follows the test procedure below: continue to inject the mixed liquid 7 into the tank 3 through the liquid inlet 11, so that the pressure of the mixed liquid 7 gradually increases, and observe whether the mixed liquid seepage points observed from the high transparency cover plate 2 are uniform, so as to determine the uniformity of the membrane material's liquid resistance ability, thereby determining the uniformity of the membrane material pores.

[0041] In this embodiment, a mixture containing a color developer is injected into the tank 3 through the inlet hole 11. On the one hand, as the mixture gradually fills the tank 3, it adheres the membrane material 5 to the bottom surface of the high-transparency cover plate 2, while simultaneously expelling the gas in the tank 3 through the pores of the membrane material 5 and several small holes 4. On the other hand, after the mixture is pressurized to a predetermined pressure, it is observed through the upper surface of the high-transparency cover plate 2 whether the mixture has seeped out, so as to test the liquid-blocking pressure, liquid-blocking ability, and uniformity of the liquid-blocking ability of the membrane material. On the other hand, during the liquid-blocking test, the membrane material is subjected to uniform pressure from the mixture, which not only allows for the simultaneous testing of the liquid-blocking ability of a large area of ​​continuous membrane material, greatly improving testing efficiency, but also, due to the small hole area, the deformation of the membrane material at the small hole is negligible, making the test data of the liquid-blocking ability more accurate and reliable.

[0042] Example 2:

[0043] Example 2 provides a liquid resistance testing system for membrane materials, see [link to example]. Figure 4 It includes an air compressor 8, a first pressure regulating valve 61, a second pressure regulating valve 62, and a liquid storage tank 6; the liquid storage tank 6 is connected to the liquid inlet of the membrane material liquid resistance testing device described in Embodiment 1 through a pipeline 63, and the pressure P1 of the first pressure regulating valve is greater than the pressure P2 of the second pressure regulating valve.

[0044] See Figure 4The storage tank 6 contains a mixture 7, which contains ≤0.1% w / w of Brilliant Blue food coloring. This amount ensures that the surface tension of the liquid before adding Brilliant Blue is essentially the same as that of the mixture after adding Brilliant Blue, thus avoiding affecting the accuracy of the liquid resistance test. The mixture in the storage tank 6 is connected to the inlet port 11 via a pipeline. The pressure of the mixture in the storage tank 6 is controlled by two-stage pressure regulation using compressed air. By adjusting the first pressure regulating valve 61 and the second pressure regulating valve 62, the air pressure on the pressure gauge P1 is maintained at a certain value. P1 needs to be greater than the air pressure of pressure gauge P2, which is generally set to 0.3 MPa. If the test is for the instantaneous liquid resistance of the membrane material, gradually increase the value of P2 by using the second pressure regulating valve 62. Stop pressurizing when the mixed liquid is found to seep out from the surface of the membrane material through the high transparency cover plate 2, and record the pressure value of pressure gauge P2 to obtain the instantaneous liquid resistance pressure value of the membrane material. If the test is for the pressure holding test, gradually increase the value of P2 by using the second pressure regulating valve 62 until the value of P2 reaches the set value. If no leakage is found through the high transparency cover plate 2 within a certain period of time, the liquid resistance of the membrane material meets the standard.

[0045] The membrane material liquid resistance testing system of Example 2 provides a mixed liquid at a certain pressure to the membrane material liquid resistance testing device described in Example 1. For the similarities with Example 1, please refer to Example 1, and it will not be repeated here.

Claims

1. A device for testing the liquid resistance of membrane materials, characterized in that, The device includes a base and a highly transparent cover plate. The upper surface of the base is provided with a tank for containing liquid, and the surface of the highly transparent cover plate is provided with a number of small holes, which are connected to the tank. The edge of the membrane material is sandwiched between the base and the highly transparent cover plate; The area enclosed by the outermost few holes is smaller than the area of ​​the groove. The base is provided with a liquid inlet hole that communicates with the tank.

2. The membrane material liquid resistance testing device as described in claim 1, characterized in that, The aforementioned small holes are evenly distributed.

3. The membrane material liquid resistance testing device as described in claim 1, characterized in that, The diameter of the small hole is 2mm-8mm.

4. The membrane material liquid resistance testing device as described in any one of claims 1-3, characterized in that, The base is made of aluminum alloy or stainless steel.

5. The membrane material liquid resistance testing device as described in any one of claims 1-3, characterized in that, The highly transparent cover is made of acrylic material.

6. The membrane material liquid resistance testing device as described in claim 5, characterized in that, The bottom surface of the highly transparent cover plate is flat.

7. The membrane material liquid resistance testing device as described in claim 5, characterized in that, The mixture fills the tank, and the mixture adheres the membrane material to the bottom surface of the high-transparency cover plate.

8. The membrane material liquid resistance testing device as described in claim 7, characterized in that, The air inside the tank is discharged through the pores and several small holes of the membrane material.

9. A system for testing the liquid resistance of membrane materials, characterized in that, Includes an air compressor, a first pressure regulating valve, a second pressure regulating valve, and a liquid storage tank; The liquid storage tank is connected to the liquid inlet of the membrane material liquid resistance testing device as described in any one of claims 1-8 via a pipeline.

10. The membrane material liquid resistance testing system as described in claim 9, characterized in that, The pressure of the first pressure regulating valve is greater than the pressure of the second pressure regulating valve.

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