A waterproof cloth air permeability detection device

Abstract

The utility model discloses a waterproof cloth air permeability detection device, including upper casing and lower casing, upper casing is inserted with lower casing, the top of upper casing is fixedly connected with the air inlet pipe, the inside fixed mounting of air inlet pipe has the gas flowmeter, the inner wall fixed mounting of upper casing has pressure sensor no.

Description

TECHNICAL FIELD

[0001] The utility model relates to material performance detection technical field especially is related to a waterproof cloth air permeability detection device. BACKGROUND

[0002] Waterproof cloth is a kind of multifunctional material, has waterproof, sun-proof, dust-proof and multiple characteristics, and waterproof cloth is widely used in building, outdoor supplies, industrial protection and multiple fields, and its air permeability directly influences the use experience and actual function of product, therefore, accurately detecting the air permeability of waterproof cloth becomes the key link to ensure product quality and meet market demand.

[0003] Traditional waterproof cloth air permeability detection device mostly can only detect waterproof cloth in static environment, this detection method has obvious limitation, in actual use, waterproof cloth will be interfered by various external forces, such as vibration, and static detection cannot simulate this condition, leading to the detection result and actual use scene are disjointed, and the performance of waterproof cloth cannot be truly reflected, therefore, we provide a waterproof cloth air permeability detection device to solve the above problems. UTILITY MODEL CONTENTS

[0004] The utility model solves the problem to provide a waterproof cloth air permeability detection device that can simulate actual use scene, obtain multidimensional detection data and accurately evaluate air permeability.

[0005] To solve the above technical problem, the utility model adopts the technical scheme of a waterproof cloth air permeability detection device, which comprises an upper shell and a lower shell, the upper shell is inserted with the lower shell, the top of the upper shell is fixedly connected with an air inlet pipe, the inside of the air inlet pipe is fixedly installed with a gas flow meter, the inner wall of the upper shell is fixedly installed with a pressure sensor one, the inner wall of the upper shell is slidably connected with a fixing assembly, the inside of the lower shell is provided with a vibration assembly, the inner wall of the lower shell is fixedly installed with a pressure sensor two, the bottom of the lower shell is fixedly connected with an air outlet pipe, the inside of the air outlet pipe is fixedly installed with an exhaust valve, and the front side of the lower shell is fixedly installed with a display.

[0006] Preferably, the fixing assembly comprises an L-shaped frame fixedly connected to the inner wall of the lower shell, the inner wall of the L-shaped frame is threadedly connected with an adjusting screw, and the outer surface of the adjusting screw is fixedly connected with a limiting disc.

[0007] Preferably, the outer surface of the adjusting screw is rotatably connected with a pressing plate, the inner wall of the pressing plate is provided with a limiting groove, the limiting groove penetrates through the outer surface of the pressing plate, and the inner wall of the limiting groove is rotatably connected with the outer surface of the limiting disc.

[0008] Preferably, in the above-mentioned waterproof fabric breathability testing device, the vibration component includes a motor fixedly installed on the outer surface of the lower housing, the output end of the motor is fixedly connected to a rotating shaft, and the outer surface of the rotating shaft is rotatably connected to the inner wall of the lower housing.

[0009] Preferably, in the above-mentioned waterproof fabric breathability testing device, a limiting block is fixedly connected to the outer surface of the rotating shaft, and the outer surface of the limiting block is provided with a movable groove.

[0010] Preferably, in the above-mentioned waterproof fabric breathability testing device, the inner wall of the movable groove is rotatably connected to a limiting shaft, and a roller is fixedly connected to the outer surface of the limiting shaft.

[0011] The advantages and beneficial effects of this utility model are: I. This utility model, by incorporating a gas flow meter, can accurately measure the gas flow rate passing through the waterproof fabric per unit time, providing quantitative data support for evaluating the breathability performance of the waterproof fabric. By incorporating pressure sensor one and pressure sensor two, it can monitor the gas pressure inside the upper and lower shells in real time, thereby calculating the pressure difference before and after the gas passes through the waterproof fabric, directly reflecting the breathability performance of the waterproof fabric from the perspective of pressure change. By incorporating a vibration component, it can apply mechanical vibration to the waterproof fabric during the testing process, simulating the external force interference it experiences in actual use scenarios. Through the coordinated use of the gas flow meter, pressure sensor one, pressure sensor two, and vibration component, it is possible to obtain multi-dimensional data on the changes in the breathability performance of the waterproof fabric with gas flow rate and pressure difference under vibration, thereby enabling a more comprehensive, accurate, and realistic evaluation of the breathability performance of the waterproof fabric. This overcomes the shortcomings of traditional static testing methods and provides a strong basis for the quality testing and performance optimization of waterproof fabrics.

[0012] II. This utility model, through the threaded connection between the adjusting screw and the L-shaped frame, and the synergistic effect of the limiting disc, pressure plate and limiting groove, can flexibly and stably fix waterproof cloth samples of different sizes and thicknesses, ensuring that the waterproof cloth will not shift or shake during the testing process, thereby improving the applicability of the testing device to various waterproof cloth samples and ensuring the accuracy and reliability of the test results. Attached Figure Description

[0013] Fig. 1 This is a three-dimensional front view structural diagram of this utility model; Fig. 2 This is a cross-sectional structural schematic diagram of the present invention; Fig. 3 This is a schematic diagram of the fixing component of this utility model; Fig. 4 This is a schematic diagram of the vibration component of this utility model.

[0014] In the diagram: 1. Upper housing; 2. Inlet pipe; 3. Gas flow meter; 4. Pressure sensor one; 5. Lower housing; 6. Fixing assembly; 601. L-shaped frame; 602. Adjusting screw; 603. Limiting disc; 604. Pressure plate; 605. Limiting groove; 7. Vibration assembly; 701. Motor; 702. Rotating shaft; 703. Limiting block; 704. Movable groove; 705. Limiting shaft; 706. Roller; 8. Pressure sensor two; 9. Exhaust pipe; 10. Exhaust valve; 11. Display. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0016] like Figs. 1 to 4 As shown, a waterproof fabric breathability testing device includes an upper housing 1, which is made of high-strength, corrosion-resistant aluminum alloy. This material and shape not only ensure the strength of the upper housing 1 and enable it to withstand the gas pressure during the testing process, but also facilitate the processing, manufacturing, and installation of other components.

[0017] An air inlet pipe 2 is fixedly connected to the top of the upper housing 1. The air inlet pipe 2 is made of stainless steel, which has good pressure resistance and corrosion resistance. Its smooth interior reduces the resistance to gas flow. A gas flow meter 3 is fixedly installed inside the air inlet pipe 2. The gas flow meter 3 is a thermal mass flow meter, which can accurately measure the mass flow of gas and is not affected by changes in gas temperature and pressure, providing accurate gas flow data for testing the breathability of waterproof fabric.

[0018] A pressure sensor 4 is fixedly installed on the inner wall of the upper housing 1. The pressure sensor 4 is a high-precision capacitive pressure sensor that can quickly and accurately measure the gas pressure inside the upper housing 1 and has good stability, so it can work reliably even in a vibration environment.

[0019] The inner wall of the upper housing 1 is slidably connected to a fixing component 6, which is used to securely fix the waterproof cloth sample.

[0020] The fixing component 6 includes an L-shaped frame 601 that is fixedly connected to the inner wall of the lower housing 5. The L-shaped frame 601 is made of carbon steel and has high strength and rigidity. Its right-angled shape design can fit well into the inner wall of the lower housing 5 and provide stable support for the subsequent fixing structure.

[0021] The inner wall of the L-shaped bracket 601 is threaded with an adjusting screw 602. The adjusting screw 602 is made of stainless steel and has been finely threaded to ensure a tight and smooth threaded connection with the L-shaped bracket 601.

[0022] A limiting disc 603 is fixedly connected to the outer surface of the adjusting screw 602. The limiting disc 603 is a circular metal sheet that is welded and fixed to the adjusting screw 602. Its function is to limit the axial movement range of the adjusting screw 602 and at the same time provide connection support for the pressure plate 604.

[0023] The outer surface of the adjusting screw 602 is rotatably connected to a pressure plate 604. The pressure plate 604 is made of engineering plastic with good toughness and is in the shape of a rectangular flat plate. It can apply pressure evenly to the waterproof cloth. The bottom of the pressure plate 604 is provided with anti-slip texture, which can improve the fixing effect of the waterproof cloth.

[0024] The inner wall of the pressure plate 604 is provided with a limiting groove 605, and the limiting groove 605 extends to the outer surface of the pressure plate 604. The inner wall of the limiting groove 605 is rotatably connected to the outer surface of the limiting disc 603. This structural design enables the pressure plate 604 to maintain stable vertical movement when it is pressed down with the adjusting screw 602, ensuring the fixing effect on the waterproof cloth, avoiding displacement of the waterproof cloth during the testing process, and ensuring the accuracy of the test results.

[0025] The lower housing 5 is similar to the upper housing 1, also made of aluminum alloy, and has a vibration component 7 inside.

[0026] The vibration assembly 7 includes a motor 701 fixedly mounted on the outer surface of the lower housing 5. The motor 701 is a high-torque, low-noise DC servo motor, which can provide stable power output and ensure the stable operation of the vibration assembly 7.

[0027] The output end of the motor 701 is fixedly connected to a rotating shaft 702. The rotating shaft 702 is made of high-strength alloy steel and its surface is hardened to improve its wear resistance and strength. The outer surface of the rotating shaft 702 is rotatably connected to the inner wall of the lower housing 5 through a high-precision bearing to reduce rotational friction and ensure the smooth rotation of the rotating shaft 702.

[0028] A limiting block 703 is fixedly connected to the outer surface of the rotating shaft 702. The limiting block 703 is a block-shaped metal structure welded to the rotating shaft 702. A movable groove 704 is opened on its outer surface. The movable groove 704 is arc-shaped. A limiting shaft 705 is rotatably connected to its inner wall. The limiting shaft 705 is made of stainless steel and has good corrosion resistance and mechanical strength. A roller 706 is fixedly connected to the outer surface of the limiting shaft 705. The roller 706 is made of rubber, which is soft and has a certain degree of elasticity. It can make good contact with the surface of the waterproof cloth and avoid damage to the waterproof cloth during vibration.

[0029] When the motor 701 drives the rotating shaft 702 to rotate, the limiting block 703 rotates accordingly. The movable groove 704 on the limiting block 703 drives the limiting shaft 705 and the roller 706 to move. The roller 706 contacts the bottom outer surface of the waterproof cloth and lifts the middle part of the waterproof cloth, applying mechanical vibration to the waterproof cloth. This can simulate the external force interference that the waterproof cloth is subjected to in actual use, making the test results more consistent with the actual situation.

[0030] Pressure sensor 28 is fixedly installed on the inner wall of the lower housing 5. Pressure sensor 28 is the same model as pressure sensor 4 and is used to measure the gas pressure change inside the lower housing 5.

[0031] The bottom of the lower housing 5 is fixedly connected to an exhaust pipe 9. The exhaust pipe 9 is made of high-temperature and corrosion-resistant plastic material. An exhaust valve 10 is fixedly installed inside it. The exhaust valve 10 is a solenoid valve, which can be automatically opened and closed by the control circuit, so as to facilitate the discharge of gas in the housing after the test is completed.

[0032] A display 11 is fixedly installed on the front side of the lower housing 5. The display 11 is an LCD screen that can clearly display the data collected by the gas flow meter 3, pressure sensor 1 4 and pressure sensor 2 8, so that the operator can observe and analyze in real time and thus evaluate the air permeability of the waterproof cloth under vibration.

[0033] Working Principle: In use, the waterproof cloth is first placed on the inner wall of the lower housing 5, positioned below the pressure plate 604. Then, by rotating the adjusting screw 602, its threaded connection with the L-shaped bracket 601 causes the limiting disc 603 to press down the pressure plate 604, firmly fixing the waterproof cloth to the inner wall of the lower housing 5. Next, the upper housing 1 is inserted into the top of the lower housing 5, creating a sealed space between them. Then, gas is introduced through the air inlet pipe 2. The gas flow meter 3 measures the gas flow rate in real time, and the pressure sensor 4 measures the gas pressure inside the upper housing 1. At this point, the vibration assembly 7 is activated, and the motor 701 drives the rotating shaft 702 to rotate. The rotating shaft 702 is then fixed to the upper housing 5. The limiting block 703 on the upper shell rotates accordingly, causing the limiting shaft 705 and the roller 706 to rotate as well. At the same time, the roller 706 will contact the outer surface of the bottom of the waterproof cloth and lift the middle part of the waterproof cloth. During this process, the roller 706 will drive the limiting shaft 705 to rotate, thereby causing the roller 706 to apply mechanical vibration to the waterproof cloth. During the vibration, gas passes through the waterproof cloth and enters the lower shell 5. The pressure sensor 8 measures the pressure change inside the lower shell 5. These data are transmitted to the display 11 in real time. By analyzing data such as gas flow rate, pressure difference between the upper shell 1 and the lower shell 5, the air permeability of the waterproof cloth under vibration can be evaluated. After the test is completed, the exhaust valve 10 is opened and the gas is discharged through the exhaust pipe 9.

[0034] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on this utility model. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0035] It should be noted that all standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, which will not be described in detail here.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A device for testing the air permeability of waterproof fabric, characterized in that: The device includes an upper housing (1) and a lower housing (5), characterized in that: the upper housing (1) and the lower housing (5) are inserted into each other; an air inlet pipe (2) is fixedly connected to the top of the upper housing (1); a gas flow meter (3) is fixedly installed inside the air inlet pipe (2); a pressure sensor (4) is fixedly installed on the inner wall of the upper housing (1); a fixing component (6) is slidably connected to the inner wall of the upper housing (1); a vibration component (7) is provided inside the lower housing (5); a pressure sensor (8) is fixedly installed on the inner wall of the lower housing (5); an exhaust pipe (9) is fixedly connected to the bottom of the lower housing (5); an exhaust valve (10) is fixedly installed inside the exhaust pipe (9); and a display (11) is fixedly installed on the front side of the lower housing (5).

2. The waterproof fabric breathability testing device according to claim 1, characterized in that: The fixing component (6) includes an L-shaped frame (601) fixedly connected to the inner wall of the lower housing (5). The inner wall of the L-shaped frame (601) is threaded with an adjusting screw (602), and the outer surface of the adjusting screw (602) is fixedly connected with a limiting disc (603).

3. The waterproof fabric breathability testing device according to claim 2, characterized in that: The outer surface of the adjusting screw (602) is rotatably connected to a pressure plate (604). The inner wall of the pressure plate (604) is provided with a limiting groove (605), and the limiting groove (605) extends through to the outer surface of the pressure plate (604). The inner wall of the limiting groove (605) is rotatably connected to the outer surface of the limiting disc (603).

4. The waterproof fabric breathability testing device according to claim 1, characterized in that: The vibration assembly (7) includes a motor (701) fixedly installed on the outer surface of the lower housing (5). The output end of the motor (701) is fixedly connected to a rotating shaft (702), and the outer surface of the rotating shaft (702) is rotatably connected to the inner wall of the lower housing (5).

5. The waterproof fabric breathability testing device according to claim 4, characterized in that: The outer surface of the rotating shaft (702) is fixedly connected to a limiting block (703), and the outer surface of the limiting block (703) is provided with a movable groove (704).

6. The waterproof fabric breathability testing device according to claim 5, characterized in that: The inner wall of the movable groove (704) is rotatably connected to a limiting shaft (705), and a roller (706) is fixedly connected to the outer surface of the limiting shaft (705).

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