Device for detecting waterproof performance of waterproof breathable film

Abstract

The utility model provides a waterproof breathable film waterproof performance detection device which comprises a box body, a box base and a box upper cover are arranged at the upper end and the lower end of the box body respectively, a power switch and a pressure gauge are arranged at the upper end of the box upper cover, a water storage tank is arranged on the left side of the power switch, and a first manual stop valve is arranged at the lower end of the water storage tank. A sealing clamp is arranged at the outer end of the first manual stop valve, a vehicle-mounted shell is arranged at the upper end of the sealing clamp, a waterproof breathable film is arranged at the inner end of the sealing clamp, a second manual stop valve is arranged at the rear end of the box body, a gas pipe fitting is arranged between the water storage tank and the box body, and a liquid pipe fitting is arranged among the water storage tank, the first manual stop valve and the sealing clamp. The vehicle-mounted shell is fixed to the sealing clamp through bolts, an O-shaped ring is arranged between the vehicle-mounted shell and the sealing clamp, and a miniature air pump is arranged between the water storage tank and the box body. According to the invention, the problem of inaccurate detection of the waterproof performance of the waterproof breathable film caused by unstable water flow impact pressure is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of waterproof breathable membrane waterproof performance detection, in particular to a waterproof breathable membrane waterproof performance detection device. Background Art

[0002] With the continuous development of precision processing and manufacturing technology, it is required that the waterproof breathable membrane should be highly breathable, high temperature resistant, anti-aging, and the hydrostatic pressure should reach more than 2 meters. The waterproof breathable membrane (breathing paper) is a new type of polymer waterproof material. From the production process, the technical requirements of the waterproof breathable membrane are much higher than those of general waterproof materials; at the same time, from the quality point of view, the waterproof breathable membrane also has functional characteristics that other waterproof materials do not have. The distance between gas molecules is large, and they can pass through the pores of the waterproof breathable membrane during diffusion movement, while the distance between liquid molecules is smaller than the distance between the pores, and under the action of surface tension, the liquid molecules cannot pass through the waterproof breathable membrane, which plays a waterproof role.

[0003] Waterproof breathable membranes are used in construction, automotive exterior lighting, sensor equipment, communication equipment, precision electronics, solar equipment, chemical and medical equipment, and other industries. In these industries, waterproof breathable membranes can effectively resist the adverse effects of pressure differences caused by temperature changes. The use of waterproof breathable membranes can quickly balance the pressure inside and outside the cavity when the ambient temperature and pressure change, prevent dust, dirt or liquid from invading the cavity, and protect the internal components.

[0004] The waterproof performance testing device of the waterproof breathable membrane plays a very important role in the testing process of the waterproof breathable membrane, and can ensure whether the waterproof breathable membrane is stable when it leaves the factory.

[0005] In the prior art, during the process of testing the waterproof performance of the waterproof breathable membrane:

[0006] (1) The pressure of water flow impact is unstable, which can easily cause inaccurate detection of the waterproof performance of the waterproof breathable membrane;

[0007] (2) It requires an external power supply and is not easy to carry;

[0008] (3) The entire product shell needs to be thrown into a water tank for thirty minutes, and then the shell is opened to observe whether water has entered the waterproof breathable membrane. The observability and detection time are not good enough;

[0009] Therefore, we have made improvements to this and proposed a waterproof performance testing device for a waterproof and breathable membrane. Utility Model Content

[0010] The utility model aims to solve the problem that in the current process of testing the waterproof performance of a waterproof breathable membrane, the pressure of water flow impact is too high, which easily causes inaccurate testing of the waterproof performance of the waterproof breathable membrane.

[0011] To achieve the above-mentioned utility model purpose, the present utility model provides the following technical solutions:

[0012] A waterproof performance detection device for a waterproof and breathable membrane to improve the above problems.

[0013] Specifically, this application is as follows:

[0014] A waterproof performance detection device for a waterproof and breathable membrane, including a box body. Box bases are respectively provided at the upper and lower ends of the box body, and a box upper cover is provided at the upper end of the box body. A power switch and a pressure gauge are provided at the upper end of the box upper cover. A water storage tank is provided on the left side of the power switch. A manual shut-off valve I is provided at the lower end of the water storage tank. A sealing fixture is provided at the outer end of the manual shut-off valve I. A vehicle-mounted housing is provided at the upper end of the sealing fixture. A waterproof and breathable membrane is provided at the inner end of the sealing fixture. A manual shut-off valve II is provided at the rear end of the box body. A gas pipe fitting is provided between the water storage tank and the box body. A liquid pipe fitting is provided between the water storage tank, the manual shut-off valve I and the sealing fixture.

[0015] As a preferred technical solution of this application, the vehicle-mounted housing is fixed on the sealing fixture by bolts, and an O-ring is provided between the vehicle-mounted housing and the sealing fixture.

[0016] As a preferred technical solution of this application, a micro air pump is provided between the water storage tank and the box body. The gas pipe fitting is used for inflating the micro air pump, and a battery is provided at the lower end of the micro air pump.

[0017] As a preferred technical solution of this application, the liquid pipe fitting is used for injecting liquid from the water storage tank into the sealing fixture.

[0018] As a preferred technical solution of this application, the waterproof and breathable membrane is wrapped between the vehicle-mounted housing and the sealing fixture, and the waterproof and breathable membrane is attached to the upper end of the sealing fixture.

[0019] Compared with the prior art, the beneficial effects of the present utility model are:

[0020] In the solution of this application:

[0021] 1. The waterproof performance of the waterproof and breathable membrane is tested through a constant static pressure. It has a small volume, a controllable use space, uses a micro air pump, there is no problem of excessive pressure, the manual operation is simple, the test efficiency is greatly improved, and multiple fixtures can also be set for simultaneous testing, greatly improving the test efficiency;

[0022] 2. It is equipped with a built-in battery and does not require an external power supply. The whole device is self-contained, convenient and fast, and easy to carry;

[0023] 3. Compared with the existing device, which puts the entire vehicle-mounted housing into water one meter deep and keeps it for 30 minutes, and then opens the housing to observe whether water has entered the waterproof and breathable membrane inside the vehicle-mounted housing, this device only needs to fix the waterproof and breathable membrane at the bottom of the vehicle-mounted housing, and can directly observe whether the waterproof and breathable membrane is leaking;

[0024] 4. The test time of this application is 1 minute, which greatly saves working time compared with the previous method of putting the vehicle-mounted housing underwater for 30 minutes and then removing the upper cover of the vehicle-mounted housing;

[0025] 5. The device used in this application does not require a water tank larger than 1m. A micro air pump can directly pressurize the device, saving space and allowing for flexible operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall front view structure of a waterproof breathable membrane waterproof performance testing device provided in this application;

[0027] Figure 2 This is a schematic diagram of the overall rear view structure of a waterproof breathable membrane waterproof performance testing device provided by the present application;

[0028] Figure 3 A schematic diagram of the internal structure of a box body of a waterproof breathable membrane waterproof performance testing device provided in this application.

[0029] Indicated in the figure:

[0030] 1. Box body; 2. Box base; 3. Box cover; 4. Power switch; 5. Pressure gauge; 6. Water storage tank; 7. Manual stop valve 1; 8. Sealing fixture; 9. Vehicle-mounted housing; 10. Manual stop valve 2; 11. Gas pipe fittings; 12. Liquid pipe fittings; 13. Waterproof and breathable membrane. DETAILED DESCRIPTION

[0031] To make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments.

[0032] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the present invention to be protected, but only represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. It should be noted that the embodiments of the present invention and the features and technical solutions in the embodiments can be combined with each other without conflict.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0034] like Figure 1-3 As shown, the present embodiment proposes a waterproof performance detection device of a waterproof breathable membrane 13, comprising a box body 1, wherein a box base 2 and a box upper cover 3 are respectively provided at the upper and lower ends of the box body 1, a power switch 4 and a pressure gauge 5 are provided at the upper end of the box upper cover 3, a water storage tank 6 is provided on the left side of the power switch 4, a manual stop valve 17 is provided at the lower end of the water storage tank 6, a sealing fixture 8 is provided at the outer end of the manual stop valve 7, a vehicle-mounted housing 9 is provided at the upper end of the sealing fixture 8, a waterproof breathable membrane 13 is provided at the inner end of the sealing fixture 8, a manual stop valve 2 10 is provided at the rear end of the box body 1, a gas pipe 11 is provided between the water storage tank 6 and the box body 1, and a liquid pipe 12 is provided between the water storage tank 6, the manual stop valve 17 and the sealing fixture 8.

[0035] The pipeline in the box body 1 is connected through a micro air pump, and is connected to a gas pipe fitting 11 through a manual stop valve 10 and a pressure gauge 5 in turn, and is connected to the upper end of the water tank through the gas pipe fitting 11. The lower end of the water tank is connected to a manual stop valve 7 and a sealing fixture 8 in turn through a liquid pipe fitting 12.

[0036] The vehicle-mounted housing 9 is fixed to the sealing fixture 8 by means of bolts, and an O-ring is provided between the vehicle-mounted housing 9 and the sealing fixture 8 .

[0037] To ensure the sealing effect, the product is fixed on the sealing fixture 8 with bolts, and the waterproof breathable membrane 13 fixed on the vehicle-mounted housing 9 and the O-ring between the sealing fixture 8 are pressed tightly to achieve the sealing effect.

[0038] The waterproof performance of the waterproof breathable membrane 13 is tested by constant static pressure, which has the advantages of small size, controllable use space, use of micro air pump, no problem of excessive pressure, simple manual operation, greatly improved test efficiency, and multiple sealing fixtures 8 can also be set for simultaneous testing, which greatly provides high test efficiency;

[0039] The sealing fixtures 8 can be arranged in multiple groups, and the multiple groups can synchronously test the waterproof performance of the waterproof breathable membrane 13 in the vehicle-mounted housing 9 .

[0040] A micro air pump is provided between the water storage tank 6 and the box body 1 , a gas pipe 11 is used for inflating the micro air pump, and a battery is provided at the lower end of the micro air pump.

[0041] Built-in battery, no external power supply is required, the whole device is self-contained, convenient and easy to carry.

[0042] The micro air pump directly pressurizes the device, saving space and allowing flexible operation.

[0043] The liquid pipe 12 is used to inject liquid from the water storage tank 6 into the sealing fixture 8 .

[0044] The waterproof and breathable membrane 13 is wrapped between the vehicle-mounted housing 9 and the sealing fixture 8 , and the waterproof and breathable membrane 13 is attached to the upper end of the sealing fixture 8 .

[0045] It is only necessary to fix the waterproof breathable membrane 13 on the bottom shell of the vehicle-mounted housing without closing the upper cover, and the waterproof breathable membrane 13 can be directly observed to see if it leaks.

[0046] When using this application:

[0047] Embodiment 1:

[0048] (1) Substrate preparation: Use tweezers to stick the waterproof breathable membrane 13 between the vehicle-mounted housing 9 and the sealing fixture 8, and stick them firmly. Fill the water tank 6 with more than one-third of water, and place the water tank 6 vertically and fixedly on the box body 1. The battery in the box body 1 remains charged to maintain the normal operation of the micro air pump;

[0049] (2) Product clamping: To ensure the sealing effect, the vehicle-mounted housing 9 is fixed to the sealing fixture 8 with bolts, and the waterproof breathable membrane 13 fixed on the vehicle-mounted housing 9 and the O-ring between the sealing fixture 8 are pressed tightly to achieve the sealing effect;

[0050] (3) Inflation stage: To ensure the accuracy of the test and the tightness during the test, use a 1L water tank 6 for pressure stabilization, use a high-precision pressure gauge 5, and use stainless steel quick-tightening joints and stainless steel stop valves before and after the water tank 6. Open the manual stop valve 1 7 and manual stop valve 2 10 before and after the water tank 6, press the power switch 4 to start, the micro air pump starts to work and enters the inflation stage, the water tank 6 is filled with compressed gas, and the pressure inside the water tank 6 is read using the pressure gauge 5. When the pressure inside the water tank 6 reaches 100Kpa, the manual knob is used to close the manual stop valve 2 10 in front of the water tank 6, cutting off the connection between the micro air pump and the water tank, and stopping inflation;

[0051] (4) Pressure holding stage and test judgment: After closing the manual stop valve 7, the pressure holding stage begins. After the pressure is held for 1 minute, the waterproof breathable membrane 13 is observed to see if there are water drops or water seepage to determine whether the waterproof breathable membrane 13 is qualified in terms of waterproof performance;

[0052] In addition, the waterproof performance of the waterproof breathable membrane 13 can also be judged by observing the reading of the pressure gauge 5 and the drop of the liquid level in the water storage tank 6 by opening the manual stop valve 7;

[0053] (5) Pressure relief and removal: To ensure safe removal of the parts after the test, first open the manual stop valve 10 in front of the water tank 6 to release the pressure in the water tank 6, then close the manual stop valve 7 behind the water tank 6, unscrew the bolts fixing the vehicle-mounted housing 9 on the sealing fixture 8, and remove the waterproof breathable membrane 13.

[0054] Embodiment 2: The difference from Embodiment 1 is that the box body 1, pipelines and valves in the front remain unchanged, and the operating steps remain unchanged. The sealing fixture 8 needs to be replaced. It is only necessary to clamp the vehicle-mounted housing 9 and adjust the size of the sealing fixture 8 and the O-ring of the vehicle-mounted housing 9 so that the waterproof and breathable membranes 13 of different products are fixed on the corresponding sealing fixture 8, and then it can be used on other products in the industry.

[0055] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention are included in the scope of the claims of the present invention.

Claims

1. A waterproof breathable membrane waterproof performance detection device, comprising a box body (1), characterized in that: The upper and lower ends of the box body (1) are respectively provided with a box base (2) and a box upper cover (3); the upper end of the box upper cover (3) is provided with a power switch (4) and a pressure gauge (5); a water storage tank (6) is provided on the left side of the power switch (4); a manual stop valve (7) is provided at the lower end of the water storage tank (6); a sealing fixture (8) is provided at the outer end of the manual stop valve (7); a vehicle-mounted housing (9) is provided at the upper end of the sealing fixture (8); a waterproof and breathable membrane (13) is provided at the inner end of the sealing fixture (8); a manual stop valve (10) is provided at the rear end of the box body (1); a gas pipe (11) is provided between the water storage tank (6) and the box body (1); and a liquid pipe (12) is provided between the water storage tank (6), the manual stop valve (7) and the sealing fixture (8).

2. A waterproof breathable membrane waterproof performance detection device according to claim 1, characterized in that: The vehicle-mounted housing (9) is fixed to the sealing fixture (8) by means of bolts, and an O-ring is provided between the vehicle-mounted housing (9) and the sealing fixture (8).

3. A waterproof breathable membrane waterproof performance detection device according to claim 1, characterized in that: A micro air pump is provided between the water storage tank (6) and the box body (1); the gas pipe (11) is used for inflating the micro air pump; and a battery is provided at the lower end of the micro air pump.

4. A waterproof breathable membrane waterproof performance detection device according to claim 1, characterized in that: The liquid pipe (12) is used to inject liquid from the water storage tank (6) into the sealing fixture (8).

5. A waterproof breathable membrane waterproof performance detection device according to claim 1, characterized in that: The waterproof and breathable membrane (13) is wrapped between the vehicle-mounted housing (9) and the sealing fixture (8), and the waterproof and breathable membrane (13) is attached to the upper end of the sealing fixture (8).

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