Device for detecting moisture permeability of protective clothing

Abstract

The invention relates to a protective clothing moisture permeability detection device, and relates to the technical field of material detection technology, the protective clothing moisture permeability detection device comprises a pedestal with a top opening, a steam chamber and a steam generator arranged in the pedestal, and a breathable mesh plate; the bottom of the detection box is not closed to form an air inlet, the air inlet is communicated with the steam cavity through a breathable net plate, a plurality of partition plates are arranged in the detection box in parallel and at uniform intervals, the partition plates divide the interior of the detection box into a plurality of detection areas, and a plurality of partition plates are arranged in the detection areas in parallel and at uniform intervals; the plurality of spacing plates divide the detection area into a plurality of independent detection units; an adsorption piece is arranged in the detection unit. The method has the advantage that large-area gridding multi-point synchronous moisture permeability evaluation can be carried out on the cloth.

Description

Technical Field

[0001] This application relates to the field of materials testing technology, and in particular to a device for detecting the moisture permeability of protective clothing. Background Technology

[0002] The moisture permeability of protective clothing is a key indicator for evaluating its wearing comfort and functionality. Currently, the main testing method is the moisture permeability cup method, which is based on textile moisture permeability testing standards. Although this method is widely used, it has limitations, including a small test sample area, which typically only provides localized data and cannot reflect the uniformity of moisture permeability across the entire protective clothing or different areas. Therefore, developing a convenient and easy-to-use device for detecting the moisture permeability of protective clothing is an urgent problem to be solved. Summary of the Invention

[0003] To address the shortcomings of existing protective clothing moisture permeability testing devices, which have small test sample areas and typically only provide localized material data, failing to reflect the overall or different parts of the protective clothing's moisture permeability uniformity, this application provides a protective clothing moisture permeability testing device, including a base with an open top and a vapor chamber disposed within the base; A steam generator used to continuously supply steam into a steam chamber; A breathable mesh panel is fixedly installed at the opening at the top of the base; A detection box that can be detachably installed at the top opening of the base has an air inlet formed at the bottom of the detection box. The air inlet is connected to the steam chamber through the breathable mesh plate. Several partition plates are arranged parallel and evenly at intervals inside the detection box. The partition plates divide the inside of the detection box into several detection areas. Several partition plates are arranged parallel and evenly within the detection areas. The partition plates divide the detection areas into several independent detection units. An adsorption element is provided inside the detection unit.

[0004] Furthermore, an insertion hole is provided on the detection box at the top of the partition plate, and a cover plate is detachably installed at the insertion hole. The partition plate is slidably inserted into the insertion hole, and an installation groove is provided on both sides of the partition plate. The adsorption component is installed into the installation groove.

[0005] Furthermore, a fixing frame for fixing the adsorption component is hinged in the mounting groove. A positioning torsion spring is provided at the hinge axis between the fixing frame and the spacer plate. Under the action of the positioning torsion spring, the fixing frame tends to rotate to a horizontal state. The partition plate is provided with a driving hole, which is composed of a vertically arranged main body and two branch parts. The top end of the main body is connected to the top of the partition plate. The two branch parts correspond to the two mounting slots one by one. One end of the branch part is connected to the main body, and the other end of the branch part extends into the mounting slot. A driving component is provided inside the main body. The driving component includes a driving rod slidably disposed inside the main body, an elastic member fixed between the driving rod and the partition plate, and two connecting ropes fixed to the driving rod. The two connecting ropes correspond one-to-one with the two branches. One end of the connecting rope is connected to the driving rod, and the other end of the connecting rope is connected to the fixing frame in the mounting groove. Under the action of the elastic element, the drive rod tends to drive the fixed frame to rotate to a vertical position through the connecting rope.

[0006] Furthermore, the drive rod extends from the top of the vertical part under the action of the elastic element; After the cover plate blocks and closes the socket, the cover plate presses the drive rod into the drive hole, and the fixing bracket rotates to a horizontal position.

[0007] Furthermore, an additional groove is provided on the side wall of the mounting groove, and a snap-fit ​​rod is slidably installed in the additional groove. An elastic member is fixed between the snap-fit ​​rod and the partition plate. Under the action of the elastic member, the end of the snap-fit ​​rod tends to extend out of the additional groove, and the end of the snap-fit ​​rod extending out of the additional groove is provided with a first guide surface and a second guide surface. The fixing frame is U-shaped and includes a horizontal support part and two vertically arranged limiting parts. The limiting parts include two symmetrically arranged limiting rods, and a limiting groove is vertically opened on one side of the two limiting rods facing each other. The adsorption component includes an outer shell, a chamber is provided inside the outer shell, the chamber is filled with an adsorbent, and the side wall of the outer shell is flush with the limiting rod; When the outer casing is not installed to the fixing frame and the fixing frame is in a vertical position, the snap-fit ​​rod extends between the two limiting rods under the action of the elastic member.

[0008] Furthermore, the partition plate includes a base and two rotating parts, which are respectively located on both sides of the base. The rotating parts are U-shaped structures with openings facing upwards. The rotating parts are rotatably connected to the base, and a fixed torsion spring is provided between the rotating parts and the base. Under the action of the fixed torsion spring, the rotating parts tend to rotate to a vertical state, so that the rotating parts and the base form the mounting groove. The additional groove and the fixing frame are both located on the rotating parts.

[0009] Furthermore, a positioning rod is integrally provided on the side wall of the snap-fit ​​rod along the length direction of the snap-fit ​​rod, and a positioning groove is provided on the corresponding vertical part to cooperate with the positioning rod; When the locking rod extends to install the gap, the positioning rod extends into the positioning groove; When the rotating part and the fixed frame are in a vertical state, and the snap-fit ​​rod disengages from the installation gap, the positioning rod disengages from the positioning groove.

[0010] Furthermore, a buffer groove is provided on the limiting part, one side of the buffer groove extends to the side of the limiting part facing the bottom wall of the mounting groove, and the positioning groove is opened into the buffer groove.

[0011] Furthermore, an elastic sealing element is slidably disposed within the branch, and the elastic sealing element wraps around the periphery of the connecting rope.

[0012] Furthermore, the diameter of the branch is configured such that it gradually decreases from the driving rod toward the fixed frame.

[0013] In summary, the present invention has at least the following beneficial effects: 1. Through the modular and adjustable partition and spacer structure, the size and number of detection units can be flexibly configured. It can not only conduct large-area gridded multi-point synchronous moisture permeability assessment of protective clothing fabric, but also conduct fine testing on local areas, which greatly improves the adaptability of the device to different testing standards and complex samples (such as seams and splices). 2. The automatic horizontal / vertical switching of the adsorption component is achieved through the linkage flipping mechanism driven by the cover plate: during testing, the adsorption component is unfolded horizontally to maximize the adsorption area and improve collection efficiency; during pick-up and drop, it automatically resets to vertical position, which facilitates the overall removal from the insertion hole and subsequent quick disassembly and weighing, significantly optimizing the operation process. 3. The rotating part locking structure, which integrates self-locking, anti-misalignment and buffer positioning, ensures stable locking of the unused side fixing frame. It can also guide the rotating part to flip outward and temporarily fix it to prevent rotation when installing the adsorption component. While ensuring the independent sealing of each detection unit, it makes the installation of the adsorption component quick, accurate and reliable. Attached Figure Description

[0014] Figure 1 This is a schematic diagram illustrating the overall structure of the detection device in this embodiment; Figure 2 This is a schematic diagram showing the internal structure of the base in this embodiment; Figure 3 This is a top view showing the internal structure of the testing box in this embodiment; Figure 4This is a schematic diagram showing the connection structure between the partition plate and the fixing frame in this embodiment; Figure 5 This is a side sectional view of the partition plate shown in this embodiment; Figure 6 This is a schematic diagram illustrating the fixed frame structure in this embodiment; Figure 7 This is a schematic diagram showing the position and structure of the buffer groove on the fixed frame in this embodiment.

[0015] Explanation of reference numerals in the attached figures: 1. Base; 11. Steam chamber; 111. Ventilation pipe; 12. Ventilation mesh plate; 13. Glass observation window; 2. Steam generator; 3. Testing box; 31. Testing chamber; 32. Assembly slot; 33. Testing area; 331. Testing unit; 34. Insertion hole; 35. Cover plate; 332. Slide groove; 36. Switch; 4. Divider plate; 5. Partition plate; 501. Base section; 502. Rotating section; 51. Mounting slot; 52. Drive hole; 52a. Main body section; 52b. Branch section; 521. Groove; 53. Fixing frame; 53a. Support section; 5 3b. Limiting part; 53b0. Limiting rod; 53b1. Limiting groove; 53b2. Positioning groove; 53b3. Buffer groove; 531. Drive assembly; 531a. Drive rod; 531b. Elastic element; 531c. Connecting rope; 531d. Elastic sealing element; 54. Locking assembly; 541. Additional groove; 542. Snap-fit ​​rod; 5421. First guide surface; 5422. Second guide surface; 543. Elastic element; 5423. Positioning rod; 6. Adsorption element; 61. Outer shell; 62. Adsorbent; 611. Vent hole; 612. Limiting block. Detailed Implementation

[0016] This application provides a device for detecting the moisture permeability of protective clothing, referring to... Figure 1 and Figure 2 The system includes a base 1 with an open top, placed horizontally on the ground. A steam chamber 11 is located within the base 1, and a ventilation pipe 111 is arranged within the steam chamber 11. Several outlets are evenly distributed on the ventilation pipe 111 to ensure the uniformity of steam entering the steam chamber 11. A steam generator 2 is located on one side of the base 1, connected to the ventilation pipe 111 within the steam chamber 11, and used to supply steam into the ventilation pipe 111. A glass observation window 13 is also provided on the side wall of the base 1 for easy observation of the situation inside the steam chamber 11.

[0017] Reference Figure 3 The detection device also includes a breathable mesh plate 12 horizontally set at the top opening of the base 1. The breathable mesh plate 12 is used to support the fabric and at the same time ensure that the steam in the steam chamber 11 can come into contact with the fabric.

[0018] Reference Figure 1 and Figure 3 A detection box 3 is detachably mounted on the top of the base 1. Specifically, the bottom of the detection box 3 is not closed, forming an air inlet, and a detection chamber 31 is set inside the detection box 3. An assembly groove 32, adapted to the base 1, is provided at the inner edge of the bottom wall of the detection box 3. The top of the base 1 slides into the assembly groove 32. To ensure the stability of the connection between the base 1 and the detection box 3, a switch 36 is provided between the base 1 and the detection box 3. The switch 36 allows the detection box 3 to be detachably fixed to the top of the base 1. In this case, the switch 36 is a bolt, which passes through the detection box 3 and the base 1 in a threaded connection, thereby fixing the detection box 3 and the base 1.

[0019] Several partition plates 4 are vertically arranged inside the testing chamber 31. The partition plates 4 are evenly arranged along the length of the testing chamber 31, dividing the testing chamber 31 into several testing areas 33 of the same size. Several spacer plates 5 are vertically arranged inside the testing area 33. The spacer plates 5 are evenly spaced along the width of the testing area 33, dividing the testing area 33 into several testing units 331.

[0020] Reference Figure 4 and Figure 5 The detection unit 331 is equipped with an adsorbent 6 for adsorbing water vapor. Specifically, the adsorbent 6 includes an outer shell 61, with several vent holes 611 on both sides of the outer shell 61. The outer shell 61 is filled with an adsorbent 62, which is generally anhydrous calcium chloride.

[0021] When testing the moisture permeability of fabric, the fabric to be tested is first placed on the breathable mesh plate 12, ensuring its flatness. Then, the testing box 3 is installed on top of the base 1. After the testing box 3 is installed, the steam generator 2 is turned on, and steam is introduced into the steam chamber. The steam passes through the breathable mesh plate 12 and the fabric to be tested and enters each testing unit 331. The adsorption element 6 in the testing unit 331 adsorbs the steam entering the testing unit 331. The testing time is controlled according to actual needs. After the test is completed, the adsorption element 6 in each testing unit 331 is removed, and the weight of each adsorption element 6 is weighed and compared with the initial weight of the adsorption element 6. The moisture permeability at various locations of the fabric can be measured.

[0022] Reference Figure 2 and Figure 3The detection box 3 at the top of the partition plate 5 has a socket 34 that is compatible with the partition plate 5. The partition plate 5 is slidably installed into the socket 34. In order to ensure the independent sealing between each partition plate 5, the two sides of the socket 34 form a sliding groove 332 on the side walls of the detection area 33. Both sides of the partition plate 5 are slidably connected to the sliding groove 332. The top edge of the socket 34 has an annular slot. The cover plate 35 for opening and closing the socket 34 can be detachably installed in the slot. There are various ways to detach the cover plate 35 from the detection box 3. In this case, screws are used to connect the cover plate 35 and the detection box 3 in a threaded manner to achieve the detachable connection between the cover plate 35 and the detection box 3.

[0023] When conducting fabric testing, staff can adjust the number of partitions 5 in the testing chamber 31 according to actual needs to form testing units 331 of different sizes to meet different experimental requirements.

[0024] Reference Figure 4 and Figure 5 To facilitate the replacement of the adsorption element 6, in this design, the adsorption element 6 is installed on the spacer plate 5. To prevent the adsorption element 6 from interfering with the spacer plate 5's through-hole 34, a mounting groove 51 for installing the adsorption element 6 is provided on both sides of the spacer plate 5. A fixing frame 53 for installing the adsorption element 6 is rotatably connected within the mounting groove 51, and the adsorption element 6 is installed on the fixing frame 53. A driving assembly 531 is provided between the fixing frame 53 and the spacer plate 5. The driving assembly 531 includes a positioning torsion spring installed at the pivot between the fixing frame 53 and the spacer plate 5. Under the action of the positioning torsion spring, the fixing frame 53 tends to rotate away from the mounting groove 51 to a horizontal position.

[0025] A drive hole 52 is provided in the area between the two mounting slots 51 in the partition plate 5. The drive hole 52 includes a main body 52a and two branch parts 52b. The main body 52a is vertically arranged and its top extends to the upper surface of the partition plate 5. The branch parts 52b are located below the main body 52a and correspond one-to-one with the two mounting slots 51. One end of the branch part 52b is connected to the bottom of the main body 52a and the other end of the branch part 52b extends into the mounting slot 51.

[0026] The drive assembly 531 also includes a drive rod 531a slidably mounted within the main body 52a of the drive hole 52. An elastic element 531b is fixed between the drive rod 531a and the partition plate 5. Specifically, an annular groove 521 is formed in the drive hole 52, and the elastic element 531b is sleeved around the drive rod 531a and hidden within the groove 521. Two connecting ropes 531c are fixed to the bottom of the drive rod 531a, each corresponding to one of the two branches 52b. The end of the connecting rope 531c away from the main body 52a is connected to the fixing frame 53. Under the action of the elastic element 531b, the top of the drive rod 531a tends to extend beyond the top of the drive hole 52, while the connecting ropes 531c tend to pull the fixing frame 53 to rotate to a vertical position. When the top of the drive rod 531a is pressed flush with the top of the partition plate 5, the fixing frame 53 rotates to a horizontal position.

[0027] After the spacer plate 5 is installed into the socket 34, the socket 34 is sealed with the cover plate 35. The cover plate 35 presses the drive rod 531a downwards until the top of the drive rod 531a is flush with the upper surface of the spacer plate 5. At this time, the fixing frame 53 drives the adsorption element 6 to rotate to a horizontal state to increase the adsorption area of ​​the adsorption element 6, ensuring that the adsorption element 6 can better absorb the water vapor in the detection unit 331. After the test is completed, the staff removes the cover plate 35. The drive rod 531a extends out of the drive hole 52 under the action of the elastic element 531b, and drives the fixing frame 53 to rotate to a vertical state through the connecting rope 531c. Then, the staff removes the spacer plate 5 from the socket 34 through the drive rod 531a, and then removes the adsorption element 6 from the fixing frame 53 to perform weight testing on the adsorption element 6. The above-mentioned setup greatly facilitates the installation and disassembly of the adsorbent 6. At the same time, during the moisture permeability test, since the adsorbent 6 is in a horizontal state, the adsorption area of ​​the adsorbent 6 is increased, ensuring that the adsorbent 6 can better absorb the water vapor in the detection unit 331.

[0028] To ensure the sealing of the detection unit 331, an elastic sealing element 531d is slidably installed inside the branch 52b. The sealing element can be made of rubber and is wrapped and fixed around the connecting rope 531c. The diameter of the branch 52b is designed to gradually decrease from the drive rod 531a towards the fixed frame 53. Thus, when the fixed frame 53 rotates to a horizontal working state, the sealing element, driven by the connecting rope 531c, presses against the inner wall of the branch 52b, forming a seal against the drive hole 52. To allow the sealing element to slide more smoothly within the branch 52b and to reduce wear on the connecting rope 531c, the branch 52b is designed in an arc shape.

[0029] Reference Figure 6Furthermore, the fixing frame 53 includes a horizontally arranged support portion 53a and two vertically arranged limiting portions 53b. The support portion 53a and the two limiting portions 53b form an upward-opening "U"-shaped fixing frame 53. The limiting portion 53b includes two symmetrically arranged limiting rods 53b0, and an installation gap adapted to the adsorption member 6 is formed between the two limiting rods 53b0. The adsorption member 6 is slidably installed into the installation gap between the two limiting rods 53b0, and after the adsorption member 6 is installed into the fixing frame 53, the side walls on both sides of the adsorption member 6 are flush with the side walls on both sides of the fixing frame 53. To ensure the stability of the adsorption component 6 after it is installed on the fixing frame 53, a limiting groove 53b1 is vertically formed on the facing side of the two limiting rods 53b0 within the same limiting part 53b. Two sets of limiting blocks 612 are integrally formed on the outer circumferential surface of the corresponding outer shell 61. The two sets of limiting blocks 612 correspond one-to-one with the two limiting parts 53b, and the two limiting blocks 612 within the same set correspond one-to-one with the two limiting grooves 53b1 within the limiting part 53b. The limiting blocks 612 are slidably connected to the limiting grooves 53b1. The cooperation between the limiting blocks 612 and the limiting grooves 53b1 prevents the adsorption component 6 from moving laterally on the fixing frame 53, making the adsorption component 6 more stable after installation on the fixing frame 53.

[0030] Reference Figure 4 A locking component 54 is provided between the fixing frame 53 and the partition plate 5. An additional groove 541 is provided on the side wall of the mounting groove 51. A snap-fit ​​rod 542 is slidably connected in the additional groove 541. An elastic member 543 is fixed between the snap-fit ​​rod 542 and the partition plate 5. A first guide surface 5421 is provided on the upper surface of the snap-fit ​​rod 542 facing the fixing frame 53. A second guide surface 5422 is provided on the side of the snap-fit ​​rod 542 facing the fixing frame 53 away from the bottom wall of the mounting groove 51.

[0031] When the suction element 6 is not installed in the fixing frame 53 and the fixing frame 53 is in a vertical state, the locking rod 542 extends into the installation gap under the action of the elastic element 543, restricting the rotation of the fixing frame 53 to a horizontal state. During the process of the suction element 6 being inserted into the installation gap of the fixing frame 53, when the suction element 6 contacts the first guide surface 5421, as the suction element 6 continues to move downward, it will push the locking rod 542 back into the auxiliary groove 541 until the end of the locking rod 542 facing the fixing frame 53 abuts against the side wall of the suction element 6. Since the side wall of the suction element 6 is flush with the side wall of the fixing frame 53, after the suction element 6 is installed in the fixing frame 53, during the process of the fixing frame 53 rotating to a horizontal state, the end face of the locking rod 542 can smoothly slide to the side wall of the limiting rod 53b0 and disengage from the limiting rod 53b0. Additionally, during the process of the fixing frame 53 rotating from a horizontal state to a vertical state, when the fixing frame 53 contacts the second guide surface 5422 of the snap-fit ​​rod 542, the fixing frame 53 will push the snap-fit ​​rod 542 back into the auxiliary groove 541 through the second guide surface 5422 until the snap-fit ​​rod 542 abuts against the side wall of the adsorption member 6.

[0032] The main application scenario of the above structure is that, within the same detection area 33, the number of spacers 5 is always one less than the number of detection units 331. Therefore, among the several spacers 5 in the same detection unit 331, one spacer 5 needs to have adsorption components 6 installed on both sides, while the other several spacers 5 only need to have adsorption components 6 installed on one side as needed. In this case, the fixed bracket 53 that is not used will always be vertically set in the mounting groove 51 under the restriction of the snap-fit ​​rod 542 after the cover plate 35 presses down the drive rod 531a.

[0033] When it is necessary to install the adsorption component 6 into the mounting bracket 53 with an internal cavity, the mounting bracket 53 cannot be easily rotated out of the mounting slot 51 because it is restricted by the snap-fit ​​rod 542. Therefore, the partition plate 5 includes a base part 501 and two rotating parts 502. The two rotating parts 502 are located on both sides of the base part 501. The rotating parts 502 are U-shaped structures with the opening facing upward. The rotating parts 502 are rotatably connected to the base part 501, and a fixed torsion spring is provided between the rotating parts 502 and the base part 501. Under the action of the fixed torsion spring, the rotating parts 502 tend to rotate to a vertical state, so that the rotating parts 502 and the base part 501 enclose to form the aforementioned mounting slot 51. The additional slot 541 and the mounting bracket 53 are both located in the rotating parts 502.

[0034] When the adsorption component 6 is installed onto the empty mounting frame 53, the mounting frame 53 can be rotated away from the base 501 by rotating the rotating part 502, which makes it easier for the staff to install the adsorption component 6 onto the mounting frame 53.

[0035] During the installation of the aforementioned adsorption component 6, due to the presence of the second guide surface 5422, a gap exists between the side of the snap-fit ​​rod 542 away from the bottom wall of the mounting groove 51 and the side wall facing the bottom wall of the mounting groove 51 within the installation gap. This results in a slight misalignment between the fixing frame 53 and the rotating part 502 after rotation. To address this, a positioning rod 5423 is provided on the side of the snap-fit ​​rod 542 facing the bottom wall of the mounting groove 51. The positioning rod 5423 is arranged along the length of the limiting rod 53b0. Correspondingly, a positioning groove 53b2 is formed on the side wall of the limiting part 53b to cooperate with the positioning rod 5423. After the snap-fit ​​rod 542 extends into the installation gap, the positioning rod 5423 extends into the positioning groove 53b2. Furthermore, when the snap-fit ​​rod 542 disengages from the installation gap, the positioning rod 5423 simultaneously disengages from the positioning groove 53b2, without affecting the subsequent rotation of the fixing frame 53. Therefore, the cooperation between the positioning rod 5423 and the positioning groove 53b2 can solve the problem that a small amount of misalignment will occur between the fixed frame 53 and the rotating part 502 after the rotating part 502 is rotated.

[0036] Reference Figure 7 During the process of installing the adsorption component 6 onto the fixing frame 53, when the adsorption component 6 pushes the snap-fit ​​component to the point of disengagement from the installation gap, the positioning rod 5423 will simultaneously disengage from the positioning groove 53b2. At this time, the fixing frame 53 loses its restraint, and the fixing frame 53 may rotate toward the base part 501 under the pulling force of the elastic component 531b. For this reason, a buffer groove 53b3 is opened on the side wall of the limiting rod 53b0. The buffer groove 53b3 extends to the side wall of the limiting rod 53b0 facing the base part 501, and the positioning groove 53b2 is located in the buffer groove 53b3. When the adsorption member 6 pushes the snap-fit ​​member to the point of disengagement from the installation gap, the positioning rod 5423 will simultaneously disengage from the positioning groove 53b2 and enter the buffer groove 53b3. At this time, the cooperation between the positioning rod 5423 and the buffer groove 53b3 can prevent the fixing frame 53 from rotating towards the base part 501 under the pulling force of the elastic member 531b. At the same time, since the buffer groove 53b3 extends to the side wall of the limiting rod 53b0 facing the base part 501, it will not affect the subsequent rotation of the fixing frame 53 away from the base part 501.

[0037] The implementation principle of this scheme is as follows: When testing the moisture permeability of fabric, the fabric to be tested is first placed flat on the breathable mesh plate 12 at the top of the base 1. Then, the testing box 3 is installed on the top of the base 1 and fixed. The steam generator 2 is turned on, and the water vapor generated by it enters the steam chamber 11 evenly through the ventilation pipe 111, then contacts the fabric through the breathable mesh plate 12, and then passes through the fabric into the various testing units 331 inside the testing box 3.

[0038] Inside the detection unit 331, the adsorption element 6 is mounted on the fixing frame 53. In the initial state, the drive rod 531a extends out of the drive hole 52 under the action of the elastic element 531b. The drive rod 531a, via the connecting rope 531c, keeps the fixing frame 53 vertical, facilitating the installation and removal of the spacer plate 5. After the insertion hole 34 is closed with the cover plate 35, the cover plate 35 presses the drive rod 531a down into the drive hole 52, and the fixing frame 53 rotates to a horizontal state under the action of the fixing torsion spring. At this time, the adsorption area of ​​the adsorption element 6 increases, allowing for better absorption of water vapor. Simultaneously, the elastic sealing element 531d, driven by the connecting rope 531c, presses against the inner wall of the branch 52b, sealing the drive hole 52 and preventing water vapor leakage.

[0039] For the spacer 5 where only one side needs to be fitted with the adsorption element 6, the unused mounting bracket 53 remains vertical under the constraint of the locking rod 542. To install the adsorption element 6 on the empty mounting bracket 53, rotate the rotating part 502 of the spacer 5, causing the mounting bracket 53 to rotate outward. The positioning rod 5423 engages with the positioning groove 53b2 to prevent misalignment and facilitate installation. During installation, the adsorption element 6 pushes the locking rod 542 out of the installation gap, and the positioning rod 5423 enters the buffer groove 53b3 to prevent the mounting bracket 53 from rotating.

[0040] After the test, the cover plate 35 is removed, and the drive rod 531a extends under the action of the elastic element 531b, driving the fixing frame 53 back to the vertical position via the connecting rope 531c. Then, the spacer plate 5 is removed, the adsorption element 6 is detached from the fixing frame 53, and its weight is measured. By comparing this weight with the initial weight, the moisture permeability of the fabric at different locations can be determined. Furthermore, staff can adjust the number of spacers 5 within the testing chamber 31 according to actual needs, forming testing units 331 of different sizes to meet diverse experimental requirements.

[0041] The embodiments described herein are preferred embodiments and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all effective changes made to the structure, shape, and principle of this application should be included within the scope of protection of this application.

Claims

1. A device for detecting the moisture permeability of protective clothing, characterized in that, Includes a base (1) with a top opening, and a vapor chamber (11) is provided inside the base (1); A steam generator (2) for continuously supplying steam into the steam chamber (11); A breathable mesh plate (12) is fixedly installed at the top opening of the base (1); A detection box (3) is detachably installed at the top opening of the base (1). The bottom of the detection box (3) is not closed to form an air inlet. The air inlet is connected to the steam chamber (11) through the breathable mesh plate (12). Several partition plates (4) are arranged parallel and evenly in the detection box (3). The partition plates (4) divide the inside of the detection box (3) into several detection areas (33). Several partition plates (5) are arranged parallel and evenly in the detection area (33). The partition plates (5) divide the detection area (33) into several independent detection units (331). An adsorption element (6) is provided inside the detection unit (331).

2. The device for detecting the moisture permeability of protective clothing according to claim 1, characterized in that, An insertion hole (34) is provided on the detection box (3) at the top of the partition plate (5). A cover plate (35) is detachably installed at the insertion hole (34). The partition plate (5) is slidably inserted into the insertion hole (34). An installation groove (51) is provided on both sides of the partition plate (5). The adsorption component (6) is installed into the installation groove (51).

3. The device for detecting the moisture permeability of protective clothing according to claim 2, characterized in that, A mounting bracket (53) for fixing the adsorption component (6) is hinged in the mounting groove (51). A positioning torsion spring is provided at the hinge axis between the mounting bracket (53) and the partition plate (5). Under the action of the positioning torsion spring, the mounting bracket (53) tends to rotate to a horizontal state. A drive hole (52) is provided in the partition plate (5). The drive hole (52) is composed of a vertically arranged main body (52a) and two branch parts (52b). The top end of the main body (52a) is connected to the top of the partition plate (5). The two branch parts (52b) correspond one-to-one with the two mounting slots (51). One end of the branch part (52b) is connected to the main body (52a), and the other end of the branch part (52b) extends into the mounting slot (51). A driving component is provided inside the main body (52a). The driving component includes a driving rod (531a) slidably disposed inside the main body (52a), an elastic member (531b) fixed between the driving rod (531a) and the partition plate (5), and two connecting ropes (531c) fixed to the driving rod (531a). The two connecting ropes (531c) correspond one-to-one with the two branches (52b). One end of the connecting rope (531c) is connected to the driving rod (531a), and the other end of the connecting rope (531c) is connected to the fixing frame (53) in the mounting groove (51). Under the action of the elastic element (531b), the drive rod (531a) tends to drive the fixed frame (53) to rotate to a vertical state through the connecting rope (531c).

4. The device for detecting the moisture permeability of protective clothing according to claim 3, characterized in that, The drive rod (531a) extends from the top of the vertical part under the action of the elastic member (531b); When the cover plate (35) blocks and closes the insertion hole (34), the cover plate (35) presses the drive rod (531a) into the drive hole (52), and the fixing bracket (53) rotates to a horizontal state.

5. The device for detecting the moisture permeability of protective clothing according to claim 4, characterized in that, An additional groove (541) is provided on the side wall of the mounting groove (51). A snap-fit ​​rod (542) is slidably installed in the additional groove (541). An elastic member (543) is fixed between the snap-fit ​​rod (542) and the partition plate (5). Under the action of the elastic member (543), the end of the snap-fit ​​rod (542) tends to extend out of the additional groove (541). The end of the snap-fit ​​rod (542) extending out of the additional groove (541) is provided with a first guide surface (5421) and a second guide surface (5422). The fixing frame (53) is U-shaped and includes a horizontal support part (53a) and two vertically arranged limiting parts (53b). The limiting part (53b) includes two symmetrically arranged limiting rods (53b0). An installation gap is formed between the two limiting rods (53b0). A limiting groove (53b1) is vertically opened on the side of the two limiting rods (53b0) facing each other. The adsorption component (6) includes an outer shell (61), a chamber is provided inside the outer shell (61), the chamber is filled with an adsorbent (62), and the side wall of the outer shell (61) is flush with the limiting rod (53b0); When the outer shell (61) is not installed to the fixing frame (53) and the fixing frame (53) is in a vertical state, the snap-fit ​​rod (542) extends into the space between the two limiting rods (53b0) under the action of the elastic member (543).

6. The device for detecting the moisture permeability of protective clothing according to claim 5, characterized in that, The partition plate (5) includes a base part (501) and two rotating parts (502). The two rotating parts (502) are respectively located on both sides of the base part (501). The rotating parts (502) are U-shaped structures with openings facing upwards. The rotating parts (502) are rotatably connected to the base part (501), and a fixed torsion spring is provided between the rotating parts (502) and the base part (501). Under the action of the fixed torsion spring, the rotating parts (502) tend to rotate to a vertical state, so that the rotating parts (502) and the base part (501) enclose to form the mounting groove (51). The additional groove (541) and the fixing frame (53) are both located on the rotating parts (502).

7. The device for detecting the moisture permeability of protective clothing according to claim 5, characterized in that, A positioning rod (5423) is integrally provided on the side wall of the snap-fit ​​rod (542) along the length direction of the snap-fit ​​rod (542), and a positioning groove (53b2) is provided on the corresponding vertical part to cooperate with the positioning rod (5423); When the snap-fit ​​rod (542) extends into the installation gap, the positioning rod (5423) extends into the positioning groove (53b2); When the rotating part (502) and the fixing frame (53) are in a vertical state, when the snap-fit ​​rod (542) disengages from the installation gap, the positioning rod (5423) disengages from the positioning groove (53b2).

8. The device for detecting the moisture permeability of protective clothing according to claim 7, characterized in that, A buffer groove (53b3) is provided on the vertical part, and one side of the buffer groove (53b3) extends to the side of the limiting part (53b) facing the bottom wall of the mounting groove (51). The positioning groove (53b2) is opened into the buffer groove (53b3).

9. The device for detecting the moisture permeability of protective clothing according to claim 8, characterized in that, An elastic sealing element (531d) is slidably disposed within the branch (52b), and the elastic sealing element (531d) wraps around the periphery of the connecting rope (531c).

10. A device for detecting the moisture permeability of protective clothing according to claim 9, characterized in that, The diameter of the branch (52b) is configured such that the diameter gradually decreases from the drive rod (531a) toward the fixed frame (53).

Images