A disposable diaper air permeability detection system

Abstract

The present invention discloses a breathability detection system for diapers, which relates to the technical field of new material diapers and includes a detection table and a detection component. A bracket is arranged on the top of the detection table, and a fixed clamping ring is arranged in the middle of the bracket. The detection component is arranged in the middle of the detection table. The detection component includes a blower. The blower is arranged at the bottom of the detection table. One end of the blower is provided with a filter cover, and the other end of the blower is connected with a pressure stabilizing cover. A bracket is arranged at the bottom of the pressure stabilizing cover, and the bracket is U-shaped. A vertical rod is slidably connected in the middle of the bracket. In the present invention, the blower enables the air to enter the pressure stabilizing cover after being filtered to form a pressure difference, which can drive the displacement of the piston plate in the graduated cylinder to measure the air permeability. The transparent graduated cylinder and the scale design are convenient for direct reading. The pressure stabilizing cavity is equipped with a spring sealing plug to automatically relieve pressure and maintain a constant pressure. At the same time, the orifice plate structure ensures uniform and stable air flow.

Description

Technical Field

[0001] The present invention relates to the technical field of new material diapers, and specifically to a diaper air permeability detection system. Background Art

[0002] New material diapers refer to diapers made of innovative materials that break through traditional material limitations and have higher performance or environmental protection properties. For example, using superabsorbent resin to replace traditional petroleum-based SAP, which has better water absorption performance and is biodegradable, or improving water absorption and air permeability through nano-scale fibers to reduce bacterial growth. Such products have been technologically upgraded in terms of absorbency, air permeability, comfort, and environmental protection. When producing new material diapers, it is necessary to detect their air permeability.

[0003] For example, the invention with the publication number CN112378833B discloses an intelligent diaper air permeability detection system. By turning on the exhaust fan, this invention can draw the air above the diaper into the lower part to measure the air permeability of the diaper. The cloth strip on the mesh plate can detect whether the air is flowing, and it can be directly seen whether the diaper is air permeable. The heating rod can heat the diaper to simulate the skin temperature of a baby, improving the accuracy of the detection result. The through-hole grooves symmetrically arranged on both sides of the arc plate can make the air evenly distributed through the bottom of the diaper, and the cloth strip can swing the air, further improving the uniformity of air flow and increasing the accuracy of the air permeability detection result. However, during the detection process, it is not convenient to accurately limit the pressure difference on both sides of the diaper and detect the air permeability, so it is not convenient to directly calculate the air permeability rate of the diaper. At the same time, the floating ball is also prone to shaking, resulting in the problem of affecting the overall detection accuracy. Summary of the Invention

[0004] The purpose of the present invention is to provide a diaper air permeability detection system to solve the problems raised in the above background art.

[0005] To achieve the above object, the present invention provides the following technical solution: a diaper air permeability detection system, including a detection table and a detection component. A bracket is arranged on the top of the detection table, and a fixed clamping ring is arranged in the middle of the bracket. The detection component is arranged in the middle of the detection table. The detection component includes a fan. A fan is arranged at the bottom of the detection table. One end of the fan is provided with a filter cover, and the other end of the fan is connected with a voltage stabilizing cover. A bracket is arranged at the bottom of the voltage stabilizing cover. The bracket is U-shaped. A vertical rod is slidably connected to the middle of the bracket. A sealing plug is fixed at the top of the vertical rod. The sealing plug is frustum-shaped and matches the opening at the bottom of the voltage stabilizing cover. A compression spring is sleeved on the outside of the vertical rod. The upper and lower ends of the compression spring are respectively in contact with the bottom of the sealing plug and the top surface of the middle of the bracket. A perforated plate is arranged inside the voltage stabilizing cover. The top of the fixed clamping ring is fixedly connected with a graduated cylinder, and a piston plate is slidably connected inside the graduated cylinder.

[0006] Further, a clamping component is connected to one side of the bracket. The clamping component includes a worm. A worm is rotatably connected to one side of the bracket. A worm gear is meshed on the outside of one end of the worm. A rotating shaft is fixed inside the worm gear. The rotating shaft is rotatably connected with the detection table. And a driving gear is arranged on the outside of the lower end of the rotating shaft.

[0007] Further, a toothed ring is meshed on one side of the driving gear. The teeth of the toothed ring are distributed in a fan shape. And a first limit block is arranged on the top of the toothed ring. A second limit block is slidably connected to one side of the first limit block. And a movable clamping ring is fixed on the top of the second limit block.

[0008] Further, the first limit block is right trapezoid-shaped. The first limit blocks are equidistantly distributed in a circular shape about the bottom of the toothed ring. And the first limit blocks correspond to the second limit blocks one by one.

[0009] Further, a lining ring is slidably connected inside the movable clamping ring. A guide block is slidably connected to the outside of the lining ring. And the guide block is fixedly connected with the movable clamping ring.

[0010] Further, the detection table is rotatably connected with the toothed ring. And the lining ring is fixedly connected with the detection table.

[0011] Further, an annular groove is opened at the bottom of the fixed clamping ring. An observation cylinder is arranged on the top of the fixed clamping ring. The inside of the annular groove is communicated with the inside of the observation cylinder. And a waterproof and breathable film is arranged inside the observation cylinder.

[0012] Further, a resistance reducing component is arranged on the top of the graduated cylinder. The resistance reducing component includes a dust-proof plate. A dust-proof plate is arranged on the top of the graduated cylinder. A pulley seat is arranged on the top of the dust-proof plate. A rope is sleeved on the outside of the pulley seat. One end of the rope is fixed with a first counterweight block. And the first counterweight block is fixedly connected with the piston plate.

[0013] Further, a sliding seat is arranged at the other end of the rope, a sliding rod is slidably connected inside one end of the sliding seat, and the sliding rod is fixedly connected to the measuring cylinder. A second counterweight is arranged on one side of the sliding seat.

[0014] Further, a limiting rod is arranged on the other side of the sliding seat, a magnet is fixed at one end of the limiting rod, an adjusting block is sleeved outside the limiting rod, and the adjusting block is magnetically connected to the magnet.

[0015] The present invention provides a diaper air permeability detection system, which has the following beneficial effects:

[0016] 1. In the present invention, the air is filtered by the fan and then enters the pressure stabilizing cover to form a pressure difference, which can drive the displacement of the piston plate in the measuring cylinder to measure the air permeability. The transparent measuring cylinder and the scale design are convenient for direct reading. The pressure stabilizing cavity is equipped with a spring sealing plug to automatically relieve pressure and maintain a constant pressure. At the same time, the orifice plate structure ensures uniform and stable air flow. Therefore, in the actual detection process, since the air permeability usually refers to the volume of gas passing through a unit area of material per unit time under a specific pressure difference, in this device, the pressure, time, and area during measurement are the same. Therefore, by observing and recording the position of the piston plate, the air permeability of the new material diaper sample can be accurately measured, and accurate air permeability data can be obtained without a sensor, greatly reducing the equipment cost and improving the production efficiency of the enterprise.

[0017] 2. The present invention adopts a worm and worm gear transmission structure to control the clamping mechanism, realizes uniform force application and self-locking fixation of the clamping ring through the linkage of the gear set. The equally spaced limiting blocks ensure uniform pressure on the clamping surface, improve the sample sealing performance. A transparent observation cylinder and a waterproof and breathable membrane are specially set to detect leakage, and a preset red solution can visually display the sealing failure, providing double guarantees to avoid gas leakage affecting the detection accuracy. The self-locking characteristic of the worm and worm gear ensures the clamping stability.

[0018] 3. The present invention uses a counterweight balance system to improve the detection sensitivity. The sliding seat and the counterweight form a dynamic balance through the rope, effectively offsetting the movement resistance of the piston plate. The sliding rod guides to ensure the displacement stability of the sliding seat. After the detection, the balance state is quickly released through the magnetically attracted adjusting block, and the counterweight system automatically completes the reset operation, avoiding the time-consuming and laborious manual lifting of heavy objects. At the same time, the magnetic fixation realizes rapid reassembly and installation, significantly improving the operation convenience of the equipment. Description of the Drawings

[0019] Figure 1 It is an overall three-dimensional structure schematic diagram of a diaper air permeability detection system of the present invention;

[0020] Figure 2 It is a top three-dimensional structure schematic diagram of the clamping assembly of a diaper air permeability detection system of the present invention;

[0021] Figure 3 Schematic diagram of the movable clamping ring structure of a disposable diaper air permeability detection system according to the present invention;

[0022] Figure 4 Schematic diagram of the internal structure of the observation cylinder of a disposable diaper air permeability detection system according to the present invention;

[0023] Figure 5 Schematic diagram of the internal structure of the pressure stabilizing box of a disposable diaper air permeability detection system according to the present invention;

[0024] Figure 6 Schematic diagram of the internal structure of the measuring cylinder of a disposable diaper air permeability detection system according to the present invention;

[0025] Figure 7 Schematic three-dimensional structure diagram of the sliding seat of a disposable diaper air permeability detection system according to the present invention.

[0026] In the figure: 1, detection table; 2, support; 3, fixed clamping ring; 4, clamping assembly; 401, worm; 402, worm gear; 403, rotating shaft; 404, driving gear; 405, gear ring; 406, first limit block; 407, second limit block; 408, movable clamping ring; 409, inner lining ring; 410, guide block; 411, annular groove; 412, observation cylinder; 413, waterproof and breathable membrane; 5, detection assembly; 501, fan; 502, filter cover; 503, pressure stabilizing cover; 504, bracket; 505, vertical rod; 506, sealing plug; 507, compression spring; 508, orifice plate; 509, measuring cylinder; 510, piston plate; 6, resistance reducing assembly; 601, dust-proof plate; 602, pulley seat; 603, rope; 604, first counterweight; 605, sliding seat; 606, sliding rod; 607, second counterweight; 608, limiting rod; 609, magnet; 610, adjusting block. Detailed implementation manners

[0027] Please refer to Figure 1 , Figure 5 and Figure 6, the present invention provides a technical solution: a breathable detection system for diapers, which includes a detection table 1 and a detection component 5. A bracket 2 is arranged on the top of the detection table 1, and a fixed clamping ring 3 is arranged in the middle of the bracket 2. The detection component 5 is arranged in the middle of the detection table 1. The detection component 5 includes a blower 501. The blower 501 is arranged at the bottom of the detection table 1. One end of the blower 501 is provided with a filter cover 502, and the other end of the blower 501 is connected to a pressure stabilizing cover 503. A bracket 504 is arranged at the bottom of the pressure stabilizing cover 503. The bracket 504 is U-shaped. A vertical rod 505 is slidably connected to the middle of the bracket 504. A sealing plug 506 is fixed at the top of the vertical rod 505. The sealing plug 506 is frustum-shaped and matches the opening at the bottom of the pressure stabilizing cover 503. A compression spring 507 is sleeved on the outside of the vertical rod 505. The upper and lower ends of the compression spring 507 are respectively in contact with the bottom of the sealing plug 506 and the middle top surface of the bracket 504. A perforated plate 508 is arranged inside the pressure stabilizing cover 503. A graduated cylinder 509 is fixedly connected to the top of the fixed clamping ring 3. A piston plate 510 is slidably connected inside the graduated cylinder 509;

[0028] The specific operation is as follows. After clamping and positioning the new material diaper sample, start the blower 501. The external air will enter the pressure stabilizing cover 503 under the filtration of the filter cover 502. At this time, under the limiting action of the bracket 504, the compression spring 507 pushes the sealing plug 506 to form a seal with the pressure stabilizing cover 503, resulting in an increase in the internal air pressure. At the same time, the top of the graduated cylinder 509 is connected to the external air. Therefore, the air pressure at the top of the new material diaper sample will be the same as the outside. The air flow will flow through the new material diaper sample to the inside of the graduated cylinder 509 due to the pressure difference, thereby driving the piston plate 510 to move upward. And the graduated cylinder 509 is transparent and is marked with scales on the outside, which is convenient for observing the position of the piston plate 510. Therefore, the gas volume passing through the new material diaper sample can be obtained according to the upward movement distance of the piston plate 510. Moreover, when the internal pressure of the pressure stabilizing cover 503 is too high, the air flow will also squeeze the sealing plug 506, causing the compression spring 507 to compress, and the sealing plug 506 will separate from the pressure stabilizing cover 503, so that the pressure can be automatically relieved. At the same time, the perforated plate 508 can make the air flow evenly blow towards the new material diaper sample and can also play a role in stabilizing the pressure. Therefore, in the actual detection process, since the air permeability usually refers to the gas volume passing through the unit area of the material per unit time under a specific pressure difference. In this device, the pressure, time, and area during measurement are the same. Therefore, by observing and recording the position of the piston plate 510, the air permeability of the new material diaper sample can be accurately measured. At the same time, this application does not require a variety of sensors, which is beneficial to saving the equipment cost and improving the production efficiency of the enterprise.

[0029] Please refer to Figures 1 to 4, a clamping assembly 4 is connected to one side of the bracket 2, and the clamping assembly 4 includes a worm 401. One side of the bracket 2 is rotatably connected to the worm 401, and a worm gear 402 is engaged with the outer side of one end of the worm 401. A rotating shaft 403 is fixed inside the worm gear 402, and the rotating shaft 403 is rotatably connected to the test bench 1. Moreover, a driving gear 404 is arranged on the outer side of the lower end of the rotating shaft 403. A gear ring 405 is engaged with one side of the driving gear 404. The teeth of the gear ring 405 are distributed in a fan shape. Moreover, a first limiting block 406 is arranged on the top of the gear ring 405. A second limiting block 407 is slidably connected to one side of the first limiting block 406. And a movable clamping ring 408 is fixed to the top of the second limiting block 407. The first limiting block 406 is in the shape of a right trapezoid, and the first limiting block 406 is evenly distributed in a circumferential manner at equal intervals with respect to the bottom of the gear ring 405. And the first limiting block 406 corresponds to the second limiting block 407 one by one. A lining ring 409 is slidably connected inside the movable clamping ring 408. Moreover, a guiding block 410 is slidably connected to the outer side of the lining ring 409. And the guiding block 410 is fixed to the movable clamping ring 408. The test bench 1 is rotatably connected to the gear ring 405. And the lining ring 409 is fixed to the test bench 1. An annular groove 411 is formed at the bottom of the fixed clamping ring 3. And an observation cylinder 412 is arranged on the top of the fixed clamping ring 3. Moreover, the inside of the annular groove 411 is communicated with the inside of the observation cylinder 412. And a waterproof and breathable membrane 413 is arranged inside the observation cylinder 412;

[0030] The specific operation is as follows. First, flatten the new material diaper sample saturated with physiological saline and place it between the fixed clamping ring 3 and the movable clamping ring 408. Then rotate the worm 401 to drive the worm gear 402 to rotate, so as to drive the gear ring 405 to rotate through the rotating shaft 403 and the driving gear 404. At this time, since the lining ring 409 will limit the moving direction of the movable clamping ring 408 through the guiding block 410, making it only move vertically. Therefore, when the gear ring 405 drives the first limiting block 406 to squeeze the inclined surface of the second limiting block 407, the movable clamping ring 408 will move upward to clamp the new material diaper sample. At the same time, the first limiting block 406 and the second limiting block 407 are evenly distributed in a circumferential manner at equal intervals, which can make the force application more uniform during force application, facilitating improving the sealing performance after clamping. Moreover, by utilizing the self-locking performance of the worm 401 and the worm gear 402, the stability after clamping is increased. And the teeth of the gear ring 405 are distributed in a fan shape. Therefore, only a small angle of rotation is required to complete the clamping operation, improving the efficiency during clamping. During the subsequent detection process, once part of the air leaks from between the fixed clamping ring 3 and the movable clamping ring 408, it can flow into the observation cylinder 412 through the annular groove 411. Since a conspicuous red solution is pre-set above the waterproof and breathable membrane 413 and the top of the waterproof and breathable membrane 413 is connected to the external atmosphere, by observing whether there are air bubbles leaking out, the sealing performance after clamping between the fixed clamping ring 3 and the movable clamping ring 408 can be observed, avoiding affecting the subsequent detection accuracy due to gas leakage.

[0031] Please refer to Figures 6 to 7 Figures 6 to 7 , a resistance reduction component 6 is provided at the top of the graduated cylinder 509, and the resistance reduction component 6 includes a dust-proof plate 601. The dust-proof plate 601 is arranged at the top of the graduated cylinder 509, and a pulley seat 602 is provided at the top of the dust-proof plate 601. A rope 603 is sleeved outside the pulley seat 602. One end of the rope 603 is fixed with a first counterweight 604, and the first counterweight 604 is fixedly connected to the piston plate 510. The other end of the rope 603 is provided with a sliding seat 605. A sliding rod 606 is slidably connected inside one end of the sliding seat 605, and the sliding rod 606 is fixedly connected to the graduated cylinder 509. A second counterweight 607 is arranged on one side of the sliding seat 605, and a limiting rod 608 is arranged on the other side of the sliding seat 605. A magnet 609 is fixed at one end of the limiting rod 608. An adjusting block 610 is sleeved outside the limiting rod 608, and the adjusting block 610 is magnetically connected to the magnet 609;

[0032] The specific operation is as follows. The sliding seat 605 will pull the piston plate 510 through the rope 603. At the same time, the first counterweight 604 and the second counterweight 607 are used to balance both ends of the rope 603, so as to reduce the frictional resistance when the piston plate 510 moves upward and form a balance. Therefore, when the air flow enters the inside of the observation cylinder 412, it will be easier to drive the piston plate 510 to move upward. The sliding rod 606 is used to guide the sliding seat 605 to improve the stability during the moving process. After the detection, when the piston plate 510 moves to the upper part of the graduated cylinder 509, the sliding seat 605 will move to the lower end of the sliding rod 606. At this time, when resetting, just pull out the adjusting block 610 forcefully to break the balance at both ends of the rope 603, and the first counterweight 604 will drive the sliding seat 605 to slide down automatically for resetting, without having to hold the heavy sliding seat 605 and wait for the piston plate 510 to slide down slowly. After the piston plate 510 is reset, the adjusting block 610 is sleeved outside the limiting rod 608. At this time, the magnet 609 will adsorb the adjusting block 610, so as to quickly fix the adjusting block 610, making it more labor-saving and convenient to reset the piston plate 510.

[0033] In summary, for this disposable diaper air permeability detection system, when in use, first flatten the new material diaper sample filled with physiological saline and place it between the fixed clamping ring 3 and the movable clamping ring 408. Then rotate the worm 401 on the side of the bracket 2 to drive the worm gear 402 to rotate, thereby driving the gear ring 405 to rotate through the rotating shaft 403 and the driving gear 404. At this time, since the inner lining ring 409 will limit the moving direction of the movable clamping ring 408 through the guiding block 410, making it only move vertically. Therefore, when the gear ring 405 drives the first limiting block 406 to squeeze the inclined surface of the second limiting block 407, the movable clamping ring 408 will move upward to clamp the new material diaper sample;

[0034] Secondly, start the fan 501. The external air will enter the pressure stabilizing cover 503 under the filtration of the filter cover 502. At this time, under the limiting action of the bracket 504, the compression spring 507 pushes the sealing plug 506 to form a seal with the pressure stabilizing cover 503, resulting in an increase in its internal air pressure. And when the internal pressure of the pressure stabilizing cover 503 is too high, the air flow will also squeeze the sealing plug 506, causing the compression spring 507 to compress, and the sealing plug 506 will separate from the pressure stabilizing cover 503, so that automatic pressure relief can be carried out. At the same time, the orifice plate 508 can make the air flow evenly blow to the new material diaper sample, and can also play a role in stabilizing the pressure;

[0035] Next, since the top of the measuring cylinder 509 is connected to the external air, and the sliding seat 605 will pull the piston plate 510 through the rope 603, and at the same time, the first counterweight 604 and the second counterweight 607 are used to counterweight both ends of the rope 603, so as to reduce the frictional resistance when the piston plate 510 moves upward. The air flow will flow through the new material diaper sample to the measuring cylinder 509 due to the pressure difference, thereby driving the piston plate 510 to move upward. During this process, the sliding rod 606 is used to guide the sliding seat 605 clamp to improve the stability during the movement;

[0036] Then, the gas volume passing through the new material diaper sample can be obtained according to the upward movement distance of the piston plate 510. Therefore, in the actual detection process, since the air permeability usually refers to the gas volume passing through the unit area of the material per unit time under a specific pressure difference. In this equipment, the pressure, time and area during measurement are the same. Therefore, by observing and recording the position of the piston plate 510, the air permeability of the new material diaper sample can be accurately measured. And during the detection process, once part of the air flow leaks between the fixed clamping ring 3 and the movable clamping ring 408, it can flow into the observation cylinder 412 through the annular groove 411. Since a conspicuous red solution is pre-set above the waterproof and breathable membrane 413, and the top of the waterproof and breathable membrane 413 is connected to the external atmosphere, by observing whether there are bubbles leaking out, the sealing performance after the fixed clamping ring 3 and the movable clamping ring 408 are clamped can be observed;

[0037] Finally, after the detection, when the piston plate 510 moves to the upper part of the measuring cylinder 509, the sliding seat 605 will move to the lower end of the sliding rod 606. At this time, during the reset, just pull out the adjusting block 610 forcefully to break the balance at both ends of the rope 603, and the first counterweight 604 will drive the sliding seat 605 to slide down automatically for reset. There is no need to hold the heavier sliding seat 605 and wait for the piston plate 510 to slide down slowly. And after the piston plate 510 is reset, then put the adjusting block 610 on the outside of the limiting rod 608. At this time, the magnet 609 will adsorb with the adjusting block 610, so as to quickly connect the adjusting block 610.

[0038] It should be noted that in this text, the terms "including", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device.

[0039] In this article, specific examples are used to illustrate the principles and implementation manners of the present invention. The description of the above examples is only used to help understand the method and its core idea of the present invention. The above is only the preferred implementation manner of the present invention. It should be noted that due to the limitation of literal expression and objectively infinite specific structures, for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements, refinements or changes can be made, and the above technical features can also be combined in an appropriate manner; these improvements, refinements, changes or combinations, or directly applying the concept and technical solution of the invention to other occasions without improvement, shall all be regarded as the protection scope of the present invention.

Claims

1. A disposable diaper air permeability detection system, characterized in that, It includes a detection table and a detection component. A bracket is arranged on the top of the detection table, and a fixed clamping ring is arranged in the middle of the bracket. The detection component is arranged in the middle of the detection table. The detection component includes a blower. A blower is arranged at the bottom of the detection table. One end of the blower is provided with a filter cover, and the other end of the blower is connected with a voltage stabilizing cover. A bracket is arranged at the bottom of the voltage stabilizing cover. The bracket is U-shaped. A vertical rod is slidably connected to the middle of the bracket. A sealing plug is fixed at the top of the vertical rod. The sealing plug is frustum-shaped and matches the opening at the bottom of the voltage stabilizing cover. A compression spring is sleeved on the outside of the vertical rod. The upper and lower ends of the compression spring are respectively in contact with the bottom of the sealing plug and the middle top surface of the bracket. A perforated plate is arranged inside the voltage stabilizing cover. The top of the fixed clamping ring is fixedly connected with a graduated cylinder. A piston plate is slidably connected inside the graduated cylinder. A resistance reducing component is arranged at the top of the graduated cylinder. The resistance reducing component includes a dust-proof plate. A dust-proof plate is arranged at the top of the graduated cylinder. A pulley seat is arranged at the top of the dust-proof plate. A rope is sleeved on the outside of the pulley seat. One end of the rope is fixed with a first counterweight, and the first counterweight is fixedly connected with the piston plate. The other end of the rope is provided with a sliding seat. A sliding rod is slidably connected inside one end of the sliding seat, and the sliding rod is fixedly connected with the graduated cylinder. A second counterweight is arranged on one side of the sliding seat. A limiting rod is arranged on the other side of the sliding seat. A magnet is fixed at one end of the limiting rod. An adjusting block is sleeved on the outside of the limiting rod, and the adjusting block is magnetically attracted to the magnet.

2. The air permeability detection system for a disposable diaper according to claim 1, wherein A clamping component is connected to one side of the bracket. The clamping component includes a worm. A worm is rotatably connected to one side of the bracket. A worm gear is meshed on the outside of one end of the worm. A rotating shaft is fixed inside the worm gear. The rotating shaft is rotatably connected with the detection table. An active gear is arranged on the outside of the lower end of the rotating shaft.

3. The air permeability detection system for a disposable diaper according to claim 2, characterized in that, A toothed ring is meshed on one side of the active gear. The teeth of the toothed ring are distributed in a fan shape. A first limiting block is arranged at the top of the toothed ring. A second limiting block is slidably connected to one side of the first limiting block. A movable clamping ring is fixed at the top of the second limiting block.

4. The disposable diaper air permeability detection system according to claim 3, characterized in that, The first limiting block is right trapezoid-shaped and is evenly distributed in a circumferential manner about the bottom of the toothed ring. The first limiting block corresponds to the second limiting block one by one.

5. A disposable diaper air permeability detection system according to claim 4, characterized in that, A lining ring is slidably connected inside the movable clamping ring. A guiding block is slidably connected to the outside of the lining ring. The guiding block is fixedly connected with the movable clamping ring.

6. The air permeability detection system for a disposable diaper according to claim 5, wherein, The detection table is rotatably connected with the toothed ring. The lining ring is fixedly connected with the detection table.

7. A disposable diaper air permeability detection system according to claim 6, characterized in that, An annular groove is opened at the bottom of the fixed clamping ring. An observation tube is arranged at the top of the fixed clamping ring. The inside of the annular groove is communicated with the inside of the observation tube. A waterproof and breathable membrane is arranged inside the observation tube.

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