A protective clothing moisture permeability detection device

Abstract

The application relates to the field of new material detection equipment, and discloses a protective clothing moisture permeation amount detection device, which comprises a cabinet body, a rotating frame is arranged in the cabinet body, a plurality of test cups are detachably connected to the rotating frame, the test cup comprises an inner cup body and an outer cup body, a movable hole is formed in the bottom of the outer cup body, a movable rod is vertically arranged through the movable hole, the top of the movable rod is fixedly connected with the bottom of the inner cup body, a fixed block is further arranged in the cabinet body, the height of the top of the fixed block gradually increases along the rotating direction of the rotating frame, the highest point of the top of the fixed block has a set height, a roller is rotationally connected to the bottom of the movable rod, a fixing mechanism for fixing the test cup is further arranged on the rotating frame, and a locking mechanism for locking the fabric is arranged on the test cup. The moisture permeation amount of the fabric when the material produces the creep phenomenon can be detected, and the detection result is more accurate.

Description

Technical Field

[0001] This invention relates to the field of new material testing equipment, and in particular to a device for detecting the moisture permeability of protective clothing. Background Technology

[0002] The fabric moisture permeability tester is a professional testing device mainly used to determine the moisture (vapor) permeability of fabrics (including new materials such as moisture-permeable coated fabrics) as well as non-woven materials used in clothing such as wadding and space cotton.

[0003] The moisture permeability of fabrics is measured using a fabric moisture permeability meter, primarily employing two methods: the upright cup method and the inverted cup method. The upright cup method involves covering the rim of a test cup containing a desiccant (usually anhydrous calcium chloride) with the fabric sample, placing it upright in a constant temperature and humidity environment. The moisture permeability is calculated by measuring the increase in weight of the desiccant due to moisture permeation. This simulates a high-humidity environment (e.g., high external humidity) where the fabric's outer side permeates through the fabric and is absorbed by the desiccant inside the cup; the increase in moisture content determines the fabric's moisture permeability. The inverted cup method involves covering the rim of a test cup containing distilled water with the fabric sample, placing it upside down in a constant temperature and humidity environment. The moisture permeability is calculated by measuring the decrease in weight due to evaporation of water inside the cup. This simulates a liquid water environment (e.g., human sweat) where the liquid water evaporates from the cup and dissipates through the fabric into the external environment.

[0004] Common materials for medical protective clothing include polyester, polypropylene, and polyethylene, and non-woven fabrics made from composite materials are typically used. As a new material for medical applications, non-woven fabrics undergo molecular chain slippage and rearrangement under continuous stress, leading to the formation of micropores and cracks within the material. Experiments show that under a continuous load of 0.5 MPa, after 30 minutes of creep, a polypropylene sample exhibits an increase in porosity of approximately 12-18% as observed by scanning electron microscopy (SEM). In actual use, such as in intensive care unit resuscitation scenarios, when medical staff perform chest compressions, the elbows and shoulders of the protective clothing continuously bear cyclic stress (peak pressure reaching 3.5 kPa).

[0005] Existing testing equipment can only test the impermeability of materials under static pressure, and cannot test the impermeability of materials under simulated rescue operations causing material creep. Moreover, when using the positive cup method, the hygroscopic agent (anhydrous calcium chloride) in the test cup cannot be agitated. Since the fabric moisture permeability test time is relatively long (usually 8 hours or 24 hours), the anhydrous calcium chloride in the upper layer absorbs moisture and clumps, affecting the moisture absorption of the anhydrous calcium chloride in the lower layer, resulting in lower actual test data. Summary of the Invention

[0006] The purpose of this invention is to provide a device for detecting the moisture permeability of protective clothing, which aims to solve the problems in the prior art where the moisture permeability testing device cannot test the moisture permeability of the fabric under stress, and the anhydrous calcium chloride in the test cup is prone to clumping due to moisture absorption.

[0007] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0008] A device for detecting the moisture permeability of protective clothing includes a cabinet with a movable door. A rotating frame is installed inside the cabinet, and multiple test cups are detachably connected to the rotating frame. Each test cup includes an inner cup and an outer cup. A movable hole is formed at the bottom of the outer cup, through which a movable rod is vertically installed. The top of the movable rod is fixedly connected to the bottom of the inner cup. When the outer bottom of the inner cup contacts the inner bottom of the outer cup, the tops of the inner and outer cups are flush. A fixing block is also installed inside the cabinet. The top of the fixing block gradually increases in height along the rotation direction of the rotating frame, and the highest point of the fixing block has a set height. A roller is rotatably connected to the bottom of the movable rod, and the roller contacts the top of the fixing block. Several sliding grooves are vertically formed on the inner wall of the outer cup, and sliding blocks that cooperate with the sliding grooves are provided on the outer wall of the inner cup. The rotating frame also has a fixing mechanism for fixing the test cups, and the test cups have a locking mechanism for locking the fabric.

[0009] Using the above technical solution, when testing the moisture permeability of fabrics using the "positive cup method," anhydrous calcium chloride is placed in the inner cup. The fabric is locked to the mouth of the test cup by a locking mechanism. The movable door is opened, and the test cup is placed inside the cabinet. The test cup is fixed to the rotating frame by a fixing mechanism. The movable door is closed, and the corresponding humidity and temperature parameters are set. The rotating frame rotates inside the cabinet, causing the test cup to rotate and perform the moisture permeability test. When the test cup rotates to the lowest point of the fixed block, the roller contacts the top of the fixed block. As the test cup continues to rotate, the roller gradually rises along the top of the fixed block. The inner cup rises along with the roller and the movable rod, pushing the fabric upward and causing it to deform, simulating the material creep phenomenon that occurs during actual use. When the roller rolls to the highest point of the fixed block, it suddenly falls when it detaches from the fixed block. The inner cup also falls suddenly, generating vibration. The anhydrous calcium chloride is dispersed due to the vibration of the inner cup, preventing the anhydrous calcium chloride from absorbing moisture and clumping inside the inner cup, thus maintaining the moisture absorption capacity of the anhydrous calcium chloride.

[0010] It should be understood that the structure and principle of controlling environmental parameters such as temperature and humidity inside the cabinet, as well as controlling the rotation of the rotating frame, are common technologies in this field and will not be elaborated on here.

[0011] A further configuration of the present invention is as follows: multiple fixing blocks are provided, a lifting plate is provided at the bottom of the fixing blocks, the multiple fixing blocks are evenly arranged on the lifting plate along the rotation trajectory of the rotating frame, and a first lifting cylinder is provided at the bottom of the lifting plate.

[0012] With the above technical solution, when it is necessary to test the moisture permeability of the fabric in a static state, the first lifting cylinder controls the lifting plate to descend, and the roller does not contact the fixed block. After a long test period, the first lifting cylinder controls the lifting plate to rise, and the roller contacts the fixed block. As the rotating frame moves, the inner cup rises and then falls, dispersing the anhydrous calcium chloride inside the inner cup. When it is necessary to test the moisture permeability of the fabric in a creep state, the first lifting cylinder controls the lifting plate to rise, and the roller contacts the fixed block. The inner cups of multiple test cups continuously rise and fall on the top of the fixed block as the rotating frame rotates, repeatedly pushing the fabric material, causing the fabric to undergo periodic stress creep.

[0013] A further configuration of the present invention is as follows: the fixing mechanism includes multiple adjusting rods horizontally arranged on the rotating frame, one end of each adjusting rod being connected to the rotating frame, a support ring being provided at the end of each adjusting rod away from the rotating frame, the multiple support rings being located on the same horizontal plane, a fixing clamp being provided on each support ring, and a clamping bolt being provided on each fixing clamp.

[0014] Using the above technical solution, the test cup is passed through the support ring, the fixing clamp holds the test cup, and then the clamping bolt is tightened to complete the fixing of the test cup.

[0015] A further configuration of the present invention is as follows: the rotating frame includes a vertically arranged rotating rod, and a rotating cylinder is provided at one end of the adjusting rod near the rotating rod. The rotating cylinder is sleeved on the rotating rod, and a fastening threaded hole is provided on the rotating cylinder, through which a fastening bolt is provided.

[0016] The above technical solution allows for adjustment of the angle between two adjacent test cups, thereby controlling the position of different test cups on the fixed block and testing the moisture permeability of the fabric under different stress and creep conditions.

[0017] A further embodiment of the present invention is that the locking mechanism includes an annular connecting plate disposed on the edge of the outer cup body, an annular cover plate disposed on the annular connecting plate, an annular rubber ring disposed at the bottom of the annular cover plate, and threaded holes provided on the annular connecting plate, the annular cover plate, and the annular rubber ring. A wing bolt is disposed through the threaded hole, and the wing bolt passes through the annular cover plate, the annular rubber ring, and the annular connecting plate from top to bottom. The outer diameter of the annular connecting plate is larger than the inner diameter of the support ring.

[0018] Using the above technical solution, the fabric to be tested is cut and punched, the fabric is placed on the annular connecting plate, the connecting threaded hole is aligned, the annular rubber ring is placed on top of the fabric, and then the annular cover plate is placed on top of the annular rubber ring. The annular connecting plate, fabric, annular rubber ring and annular cover plate are connected in series through the threaded hole by passing the wing bolt through the threaded hole, and the screw is tightened to complete the installation of the fabric.

[0019] A further feature of the present invention is that an annular sealing groove is provided on the outer side wall of the annular rubber ring, the vertical cross-section of the annular sealing groove is ">", a protruding block is provided on the inner wall of the fixing clamp, the vertical cross-section of the protruding block is ">", and the included angle of the vertical cross-section of the annular sealing groove is smaller than the included angle of the vertical cross-section of the protruding block.

[0020] With the above technical solution, the test cup is placed on the support ring, the annular connecting plate abuts against the support ring, and the clamping bolts are tightened. At this time, the protruding block is inserted into the annular sealing groove. Since the included angle of the vertical section of the annular sealing groove is smaller than the included angle of the vertical section of the protruding block, when the protruding block is inserted into the annular sealing groove, the annular rubber ring deforms, and the top and bottom are pushed to both ends, abutting against the annular cover plate and the annular connecting plate. While fixing the test cup, the sealing performance of the annular rubber ring is improved, thus improving the test detection effect.

[0021] A further feature of the present invention is that a lifting ring is provided on the rotating rod, a second lifting cylinder is provided at the top of the lifting ring, and a plurality of downward pressing rods are evenly provided at the bottom of the lifting ring, wherein the outer diameter of the downward pressing rods is smaller than the inner diameter of the annular cover plate.

[0022] The above technical solution allows the lifting ring to descend via the second lifting cylinder, squeezing the fabric from top to bottom and performing a compression creep test on the fabric in another direction.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] 1. This invention employs an inner and outer cup structure, controlling the up-and-down movement of the inner cup within the outer cup via a fixed block and a movable rod. This lifts the fabric upwards, causing it to deform under stress. When the roller suddenly falls from its highest point away from the fixed block, the inner cup also falls suddenly, generating vibration. The anhydrous calcium chloride is dispersed to a certain extent due to the vibration of the inner cup, preventing it from absorbing moisture and clumping within the inner cup, thus maintaining its moisture absorption capacity. This invention not only simulates the moisture permeability of fabrics during material creep but also prevents the anhydrous calcium chloride from clumping within the test cup, improving testing accuracy.

[0025] 2. By setting up a first lifting cylinder, a second lifting cylinder, and a rotating frame, this invention can test the moisture permeability of fabrics in a static state. By adjusting the angle between two adjacent test cups, it can test the moisture permeability of fabrics under periodic stress creep as well as under continuous stress creep.

[0026] 3. This invention controls the lowering of the lifting ring by the second lifting cylinder, squeezing the fabric from top to bottom, and performing a compression creep test on the fabric in another direction. It can test the moisture permeability of both sides of the fabric, and has complete functions.

[0027] 4. This invention provides an annular sealing groove on the annular rubber ring and a protruding block on the inner wall of the fixing clamp. When the fixing clamp holds the test cup, the protruding block is inserted into the annular sealing groove, causing the annular rubber ring to deform and press against the annular cover plate and the annular connecting plate. This invention can improve the fixing effect, prevent the test cup from tilting or falling off during movement, and also improve the sealing performance of the annular rubber ring, thereby improving the accuracy of the test. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of an embodiment of a protective clothing moisture permeability detection device according to the present invention;

[0030] Figure 2 This is a schematic diagram of the structure of a protective clothing moisture permeability detection device in the open state of the movable door in one embodiment of the present invention;

[0031] Figure 3 This is a cross-sectional view of the test cup in one embodiment of the protective clothing moisture permeability detection device of the present invention;

[0032] Figure 4 This is a schematic diagram of the lifting plate and lifting ring in one embodiment of a protective clothing moisture permeability detection device of the present invention;

[0033] Figure 5 This is a schematic diagram of the rotating frame in one embodiment of the protective clothing moisture permeability detection device of the present invention;

[0034] Figure 6 This is a schematic diagram of the fixing mechanism in one embodiment of the protective clothing moisture permeability detection device of the present invention;

[0035] Figure 7This is a schematic diagram of the locking mechanism in one embodiment of the protective clothing moisture permeability detection device of the present invention;

[0036] In the diagram: 1. Cabinet; 2. Movable door; 3. Rotating frame; 3a. Rotating rod; 4. Test cup; 4a. Inner cup; 4a1. Sliding block; 4b. Outer cup; 4b1. Movable hole; 4b2. Sliding groove; 4c. Movable rod; 4d. Roller; 5. Fixed block; 6. Fixed mechanism; 6a. Adjusting rod; 6b. Support ring; 6c. Fixed clamp; 6c1. Protruding block; 6d. Clamping bolt; 6e. Rotating cylinder; 6e1. Fastening threaded hole; 6f. Fastening bolt; 7. Locking mechanism; 7a. Annular connecting plate; 7b. Annular cover plate; 7c. Annular rubber ring; 7c1. Annular sealing groove; 7d. Connecting threaded hole; 7e. Wing bolt; 8. Lifting plate; 9. First lifting cylinder; 10. Lifting ring; 11. Second lifting cylinder; 12. Downward pressure rod; 13. Fabric. Detailed Implementation

[0037] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0038] This invention provides a device for detecting the moisture permeability of protective clothing, such as... Figures 1 to 3 As shown, the device includes a cabinet 1 with a movable door 2. A rotating frame 3 is installed inside the cabinet 1, and multiple test cups 4 are detachably connected to the rotating frame 3. Each test cup 4 includes an inner cup 4a and an outer cup 4b. A movable hole 4b1 is formed at the bottom of the outer cup 4b, through which a movable rod 4c is vertically installed. The top of the movable rod 4c is fixedly connected to the bottom of the inner cup 4a. When the outer bottom of the inner cup 4a contacts the inner bottom of the outer cup 4b, the tops of the inner cup 4a and the outer cup 4b are flush. The cabinet 1 also contains a fixed... Fixed block 5, the top of fixed block 5 gradually increases in height along the rotation direction of rotating frame 3, the highest point of fixed block 5 has a set height, the bottom of movable rod 4c is rotatably connected to roller 4d, roller 4d is in contact with the top of fixed block 5, several sliding grooves 4b2 are vertically opened on the inner wall of outer cup body 4b, the outer wall of inner cup body 4a is provided with sliding block 4a1 that cooperates with sliding groove 4b2, the rotating frame 3 is also provided with fixing mechanism 6 for fixing test cup 4, and the test cup 4 is provided with locking mechanism 7 for locking fabric 13.

[0039] like Figure 4As shown, the rotating frame 3 includes a vertically arranged rotating rod 3a. A rotating cylinder 6e is located at one end of the adjusting rod 6a near the rotating rod 3a. The rotating cylinder 6e is sleeved on the rotating rod 3a. A fastening threaded hole 6e1 is provided on the rotating cylinder 6e, through which a fastening bolt 6f passes. Multiple fixing blocks 5 are provided, and a lifting plate 8 is located at the bottom of each fixing block 5. The multiple fixing blocks 5 are evenly arranged on the lifting plate 8 along the rotation trajectory of the rotating frame 3. A first lifting cylinder 9 is located at the bottom of the lifting plate 8. A lifting ring 10 is also provided on the rotating rod 3a. A second lifting cylinder 11 is located at the top of the lifting ring 10. Several downward pressing rods 12 are evenly arranged at the bottom of the lifting ring 10. The outer diameter of each downward pressing rod 12 is smaller than the inner diameter of the annular cover plate 7b.

[0040] like Figure 5 and Figure 6 As shown, the fixing mechanism 6 includes multiple adjusting rods 6a horizontally arranged on the rotating frame 3. One end of the adjusting rod 6a is connected to the rotating frame 3. A support ring 6b is provided at the end of the adjusting rod 6a away from the rotating frame 3. Multiple support rings 6b are located on the same horizontal plane. A fixing clip 6c is provided on the support ring 6b. A clamping bolt 6d is provided on the fixing clip 6c.

[0041] like Figure 7 As shown, the locking mechanism 7 includes an annular connecting plate 7a disposed on the edge of the outer cup body 4b. An annular cover plate 7b is disposed on the annular connecting plate 7a. An annular rubber ring 7c is disposed at the bottom of the annular cover plate 7b. A connecting threaded hole 7d is provided on the annular connecting plate 7a, the annular cover plate 7b, and the annular rubber ring 7c. A wing bolt 7e is disposed through the connecting threaded hole 7d. The wing bolt 7e passes through the annular cover plate 7b, the annular rubber ring 7c, and the annular connecting plate 7a from top to bottom. The outer diameter of the annular connecting plate 7a is larger than the inner diameter of the support ring 6b. An annular sealing groove 7c1 is provided on the outer wall of the annular rubber ring 7c. The vertical cross section of the annular sealing groove 7c1 is ">". A protruding block 6c1 is disposed on the inner wall of the fixing clamp 6c. The vertical cross section of the protruding block 6c1 is ">". The included angle of the vertical cross section of the annular sealing groove 7c1 is smaller than the included angle of the vertical cross section of the protruding block 6c1.

[0042] The working principle of this technical solution is as follows:

[0043] A circular sample is cut from the fabric 13 to be tested. The diameter of the cut fabric 13 is approximately equal to the diameter of the annular connecting plate 7a. Holes are punched on the surface of the fabric 13, corresponding to the connecting threaded holes 7d. At the same time, it is ensured that the surface is free of creases or contamination. A certain amount of anhydrous calcium chloride is evenly filled into the inner cup 4a. The test surface of the sample fabric 13 is placed face up and covers the mouth of the test cup 4. The holes in the fabric 13 are aligned with the connecting threaded holes 7d on the annular connecting plate 7a. Then, the annular rubber ring 7c and the annular cover plate 7b are installed in sequence and the wing bolt 7e is tightened to complete the assembly of the fabric 13 and the test cup 4.

[0044] Open the movable door 2, place the test cup 4 with its mouth facing upwards inside the support ring 6b, and let the support ring 6b support the annular connecting plate 7a from bottom to top. Then, clamp the test cup 4 with the fixing clip 6c. At this time, the protruding block 6c1 is inserted into the annular sealing groove 7c1 to complete the fixing of the test cup 4. Close the movable door 2, adjust the humidity and temperature inside the cabinet 1 to the required values ​​for testing, and perform moisture permeability testing on the fabric 13 on the test cup 4.

[0045] When testing the moisture permeability of fabric 13 under normal conditions, the lifting plate 8 is lowered by the first lifting cylinder 9. The roller 4d at the bottom of the test cup 4 does not contact the fixed block 5 on the lifting plate 8. The rotating frame 3 drives multiple test cups 4 to rotate inside the cabinet 1. Moisture permeates from the external environment of the cup through the fabric 13 and is absorbed by the desiccant inside the cup. The testing cycle is 24 hours. Every 4 hours or 6 hours, the lifting plate 8 can be raised and then rotated at a certain angle to allow the inner cup 4a to complete one rise and fall, which disperses the anhydrous calcium chloride inside the cup and prevents the anhydrous calcium chloride from clumping and affecting the moisture absorption. Since there are only 4-5 vibrations in the entire cycle, it will not have a significant impact on the moisture absorption measurement of fabric 13 in a static state. After 24 hours, the test cup 4 is directly removed. The moisture permeability is calculated by measuring the weight increase of the desiccant due to moisture permeation within 24 hours through subsequent humidity balancing and weighing.

[0046] Since the fabric 13 is subjected to different forces in different application scenarios, the cup opening of the inner cup 4a can be set to different shapes, such as a flat cup or a slanted cup. The test cups corresponding to different cup opening shapes can be labeled to distinguish them. Through experimental comparison, the moisture permeability of the fabric when creep occurs at different positions can be tested.

[0047] A common scenario for creep in protective clothing fabrics is during chest compressions by medical personnel, when the elbows and shoulders of the protective clothing are subjected to cyclical stress. Therefore, it is necessary to test the moisture permeability of the material under cyclic stress creep. In this case, the included angle between the adjusting rods 6a is adjusted to be equal, and the first lifting cylinder 9 is raised, so that the roller 4d contacts the lowest point of the fixed block 5. At this point, the top of the inner cup 4a is flush with the top of the outer cup 4b, and the fabric 13 does not undergo stress creep. Then, the rotating frame 3 drives the test cup 4 to rotate slowly. As the test cup 4 rotates, the roller 4d moves along the fixed block 5. The top of block 5 gradually rises, and the inner cup 4a rises together with the roller 4d and the movable rod 4c, lifting the fabric 13 upwards and causing the fabric 13 to undergo periodic deformation, simulating the material creep phenomenon generated by the fabric 13 during actual use. When the roller 4d rolls to the highest point of the fixed block 5, the inner cup 4a suddenly falls and vibrates. Anhydrous calcium chloride vibrates and disperses to a certain extent due to the vibration of the inner cup 4a. After 24 hours of testing, the test cup 4 is directly removed. Through subsequent humidity balancing and weighing, the increase in weight of the desiccant due to moisture permeation within 24 hours is measured to calculate the moisture permeation amount.

[0048] Another common scenario for creep in protective clothing fabrics is when medical staff are handling equipment or patients. The elbows and shoulders of the protective clothing bear continuous stress, so it's necessary to test the moisture permeability of the material under continuous stress and creep. In this case, the angles between the adjusting rods 6a are adjusted to be unequal, with each roller 4d positioned at a different height on the fixed block 5 directly below. The first lifting cylinder 9 is then raised, and the rollers 4d contact the fixed block 5. Because the multiple adjusting rods 6a are not evenly distributed, the rollers 4d are positioned differently on the corresponding fixed blocks 5; some rollers 4d are at the highest point of the fixed block 5, and the corresponding inner cup 4a is at its highest point. The fabric 13 on the test cup 4 experiences the greatest force. Some rollers 4d are located at the lowest point of the fixed block 5, and the fabric 13 on the test cup 4 experiences no force. The testing cycle is 24 hours. Every 4 hours or 6 hours, the rotating frame 3 can be controlled to rotate at a fixed angle. For example, when there are 6 fixed blocks 5, the rotating frame 3 rotates at an angle of 60 degrees each time. When there are 4 fixed blocks 5, the rotating frame 3 rotates at an angle of 90 degrees each time. During the rotation of the test cup 4, the anhydrous calcium chloride inside can be dispersed by the vibration of the inner cup body 4a to maintain its hygroscopicity. After each rotation of the rotating frame 3, the height of the inner cup body 4a remains the same as before the rotation, and the force on the fabric 13 does not change.

[0049] When it is necessary to test the moisture permeability of fabric 13 under creep under stress on the other side, the second lifting cylinder 11 controls the lowering rod 12 to descend, pressing the fabric 13 downward. The fabric 13 is subjected to pressure in another direction. At this time, the first lifting cylinder 9 controls the lifting plate 8 to descend, and the fixed block 5 does not contact the roller 4d. When it is necessary to vibrate the test cup 4, the lowering rod 12 rises, the lifting plate 8 rises, the roller 4d contacts the fixed block 5, and then the rotating frame 3 rotates to complete the vibration of the test cup 4. After the vibration is completed, the lifting plate 8 descends, and the lowering rod 12 continues to press down to apply pressure to the fabric 13.

[0050] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0051] The above description is merely a description of preferred embodiments of the present invention and is not intended to limit the scope of the present invention in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A device for detecting the moisture permeability of protective clothing, characterized in that: The system includes a cabinet (1) with a movable door (2) and a rotating frame (3) inside. Multiple test cups (4) are detachably connected to the rotating frame (3). Each test cup (4) includes an inner cup (4a) and an outer cup (4b). The bottom of the outer cup (4b) has a movable hole (4b1), through which a movable rod (4c) is vertically installed. The top of the movable rod (4c) is fixedly connected to the bottom of the inner cup (4a). A fixing block (5) is also provided inside the cabinet (1). The top of the fixing block (5)... The height gradually increases along the rotation direction of the rotating frame (3), the highest point of the top of the fixed block (5) has a set height, the bottom of the movable rod (4c) is rotatably connected to a roller (4d), a number of sliding grooves (4b2) are vertically opened on the inner wall of the outer cup body (4b), the outer wall of the inner cup body (4a) is provided with a sliding block (4a1) that cooperates with the sliding groove (4b2), the rotating frame (3) is also provided with a fixing mechanism (6) for fixing the test cup (4), and the test cup (4) is provided with a locking mechanism (7) for locking the fabric (13); The fixing block (5) is provided in multiple ways. The bottom of the fixing block (5) is provided with a lifting plate (8). The multiple fixing blocks (5) are evenly arranged on the lifting plate (8) along the rotation trajectory of the rotating frame (3). The bottom of the lifting plate (8) is provided with a first lifting cylinder (9). The fixing mechanism (6) includes multiple adjusting rods (6a) horizontally arranged on the rotating frame (3). One end of the adjusting rod (6a) is connected to the rotating frame (3). A support ring (6b) is provided at the end of the adjusting rod (6a) away from the rotating frame (3). Multiple support rings (6b) are located on the same horizontal plane. A fixing clip (6c) is provided on the support ring (6b). A clamping bolt (6d) is provided on the fixing clip (6c). The rotating frame (3) includes a vertically arranged rotating rod (3a). A rotating cylinder (6e) is provided at the end of the adjusting rod (6a) near the rotating rod (3a). The rotating cylinder (6e) is sleeved on the rotating rod (3a). A fastening threaded hole (6e1) is opened on the rotating cylinder (6e). A fastening bolt (6f) is provided through the fastening threaded hole (6e1).

2. The device for detecting the moisture permeability of protective clothing according to claim 1, characterized in that: The locking mechanism (7) includes an annular connecting plate (7a) disposed on the edge of the outer cup body (4b). An annular cover plate (7b) is disposed on the annular connecting plate (7a). An annular rubber ring (7c) is disposed at the bottom of the annular cover plate (7b). A connecting threaded hole (7d) is provided on the annular connecting plate (7a), the annular cover plate (7b), and the annular rubber ring (7c). A wing bolt (7e) is disposed through the connecting threaded hole (7d). The wing bolt (7e) passes through the annular cover plate (7b), the annular rubber ring (7c), and the annular connecting plate (7a) from top to bottom. The outer diameter of the annular connecting plate (7a) is larger than the inner diameter of the support ring (6b).

3. The protective clothing moisture permeability detection device according to claim 2, characterized in that: An annular sealing groove (7c1) is provided on the outer wall of the annular rubber ring (7c), and the vertical cross section of the annular sealing groove (7c1) is ">". A protruding block (6c1) is provided on the inner wall of the fixing clamp (6c), and the vertical cross section of the protruding block (6c1) is ">". The included angle of the vertical cross section of the annular sealing groove (7c1) is smaller than the included angle of the vertical cross section of the protruding block (6c1).

4. The device for detecting the moisture permeability of protective clothing according to claim 2, characterized in that: The rotating rod (3a) is also provided with a lifting ring (10), the top of the lifting ring (10) is provided with a second lifting cylinder (11), and the bottom of the lifting ring (10) is provided with a number of downward pressing rods (12), the outer diameter of the downward pressing rods (12) is smaller than the inner diameter of the annular cover plate (7b).

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