Blanket fabric air permeability detection device and use method thereof

Abstract

The invention relates to the technical field of fabric breathability detection, in particular to a blanket fabric breathability detection device and a use method thereof.The blanket fabric breathability detection device is characterized by comprising a top seat, a base is arranged on the bottom surface of the top seat, and two hinges are fixedly mounted on the bottom surface of the base; when the device is used, a blanket fabric to be detected is flatly laid on the supporting ring, the air pump is started through the control panel, air is blown out through the first flow sensor, the current passing air flow value is detected, the air can be blown to the impeller, the impeller rotates through the sealing bearing, airflow is disturbed and redistributed, and the air flow is detected. Then a plurality of uniformly distributed air flows are formed through a spray orifice plate and are sprayed out, the impact force of the air flows on the blanket fabric is effectively reduced in cooperation with a supporting net, fiber gaps are prevented from being pried, and therefore the accuracy and stability of air permeability detection are improved until the air is blown to a second flow sensor to detect the current passing air flow value; and the front and back flow difference is calculated through the control panel, so that the air permeability detection effect is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of fabric air permeability detection, and in particular to a blanket fabric air permeability detection device and a use method thereof. Background Art

[0002] Blanket fabrics are usually made of wool or polyester fibers through suede weaving. The surface is densely covered with short and soft pile, which has excellent warmth retention and feel. They are widely used in household carpets, car interiors and home textile products. Due to the tight structure and thick pile layer, the flow of air and water vapor inside the fabric is restricted, which directly affects the comfort and breathability when wearing or using. Therefore, air permeability testing of blanket fabrics can not only evaluate its air flow resistance and ventilation performance, but also provide a scientific basis for product improvement, quality control and user experience.

[0003] However, the common method currently used in the market for blanket air permeability testing is to directly use a vacuum pump or air pump to blow air into the sample, and calculate the air permeability by measuring the air flow after penetration. However, due to the large instantaneous kinetic energy of the pumped air flow, it will have a strong impact on the fibers when blowing towards the pile surface of the blanket, causing the pile layer to be flattened and the fiber gaps to be pried open, thereby causing local and overall deformation and distortion of the sample, making the measured air permeability artificially amplified and the test results fluctuate greatly, which cannot truly reflect the comfort and ventilation performance of the blanket during use, resulting in a large deviation between the test data and the actual performance. To solve the above problems, we propose a blanket fabric air permeability testing device and a method for using it. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the present invention provides a blanket fabric air permeability detection device and a method of using the same, which solve the problems raised in the background technology.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: A blanket fabric air permeability detection device comprises: a top seat, a base is provided on the bottom surface of the top seat, two hinges are fixedly installed on the bottom surface of the base, the hinges are fixedly connected to the top seat, and a control panel is embedded in one side of the base; a detection component, the detection component is arranged on one side of the top seat and is used to detect air permeability; and a clamping component is arranged on the outer wall of the base and is used to clamp the fabric.

[0006] By adopting the above technical solution and setting up a detection component, the air permeability test of the blanket fabric is realized, thereby avoiding the defect of the existing technology that when the pumped air flow is blown onto the blanket, the fiber gaps are pried open, resulting in a large deviation between the detection data and the actual performance. At the same time, the clamping component can be used to tightly clamp the blanket fabric to prevent gas leakage.

[0007] Preferably, the detection component includes: an air pump, which is embedded in one side of the top seat, and a top hole is provided on the top surface of the top seat. A first flow sensor is fixedly installed inside the top hole, and the first flow sensor is fixedly connected to the air outlet end of the air pump through a hose. An air outlet is provided on the bottom surface of the top seat, and the air outlet is connected to the top hole. The air pump and the first flow sensor are both electrically connected to the control panel.

[0008] By adopting the above technical solution and setting up an air pump, when in use, the air pump can be turned on to blow out through the first flow sensor, and the current gas flow value passing through can be detected.

[0009] Preferably, the detection component also includes: a top groove, the top groove is opened on the top surface of the base, the bottom surface of the top groove is provided with a bottom hole, a second flow sensor is fixedly installed inside the bottom hole, the second flow sensor is electrically connected to the control panel, a support groove is opened on the inner wall of the top groove, a support ring is provided inside the support groove, and a support net is fixedly installed inside the support ring.

[0010] By adopting the above technical solution and setting a support ring, the blanket fabric to be tested can be placed on the support ring during use, and then the top seat can be flipped over by the hinge to press the blanket fabric. The gas during detection will pass through the blanket fabric and the second flow sensor will detect the current gas flow value passing through it. The front and rear flow difference can then be calculated through the control panel to achieve the effect of air permeability detection.

[0011] Preferably, the detection assembly further comprises: a plurality of inner grooves, wherein the plurality of inner grooves are all provided on the bottom surface of the top groove, a spring is fixedly installed inside the top groove, and a sealing ring is fixedly installed on the outer wall of the support ring.

[0012] By adopting the above technical solution, a spring is provided to push the support ring to lift the blanket fabric to fit the air outlet, and at the same time, the sealing ring can be used to prevent gas from flowing out of the gap.

[0013] Preferably, the clamping assembly comprises: two threaded rings, both of which are fixedly mounted on the outer wall of the base, the internal threads of the threaded rings are connected with first hand-tightened bolts, and the outer wall of the support ring is fixedly mounted with two side blocks.

[0014] By adopting the above technical solution and setting a threaded ring, the first hand-tightened bolt can be rotated during use, and the first hand-tightened bolt can support the side block through the cooperation of the threaded ring, thereby clamping the fabric on the support ring and the top seat to increase the sealing. At the same time, the fabric can be supported by the support net to avoid deformation of the fabric due to gas impact during detection.

[0015] Preferably, the clamping assembly further comprises: a mounting groove, the mounting groove being provided on the inner wall of the air outlet, a sealed bearing being fixedly mounted inside the mounting groove, an impeller being fixedly mounted on the inner ring of the sealed bearing, and a spray hole plate being fixedly mounted inside the mounting groove.

[0016] By adopting the above technical solution and setting up a spray hole plate, when in use, the gas will be blown to the impeller through the sealed bearing to make it rotate, disturbing and redistributing the airflow, realizing uniform diffusion and buffering of the airflow, effectively reducing the instantaneous impact force of the airflow on the blanket fabric, and then forming multiple evenly distributed airflows through the spray hole plate, effectively reducing the impact force of the airflow on the blanket fabric, avoiding the fiber gap from being pried open, thereby improving the accuracy and stability of air permeability detection.

[0017] Preferably, the clamping assembly further comprises: a collecting ring, the collecting ring being arranged inside the top groove, and a conical net being fixedly installed inside the collecting ring.

[0018] By adopting the above technical solution, a conical net is set up to cooperate with the collection ring to intercept and collect impurities such as fluff and dust blown from the blanket fabric, preventing the impurities from affecting the detection of the second flow sensor with the airflow.

[0019] Preferably, the top surface of the top seat is provided with two connection holes, the interior of the connection holes is sleeved with a second hand-tightened bolt, and the top surface of the base is provided with two threaded grooves.

[0020] By adopting the above technical solution, a second hand-tightened bolt is provided for threaded connection with the thread groove to install the top seat and the base.

[0021] A method for using a blanket fabric air permeability detection device comprises the following steps: Step 1: Lay the blanket fabric to be tested flat on the support ring. The spring will lift the blanket fabric to fit the air outlet. Then, flip the top seat through the hinge, rotate the second hand-tightening bolt and the threaded groove to thread the top seat and the base. Then, rotate the first hand-tightening bolt to support the side block, clamp the fabric on the support ring and the top seat to increase the sealing performance. Step 2: Start the air pump through the control panel to blow out gas from the first flow sensor, and detect the current gas flow value. The gas will blow to the impeller through the sealed bearing to rotate it, disturbing and redistributing the airflow, and then form multiple evenly distributed airflows through the spray plate. In conjunction with the support net, the impact of the airflow on the blanket fabric is effectively reduced, preventing the fiber gap from being pried open, thereby improving the accuracy and stability of the air permeability test; Step three: intercept and collect the fluff, dust and other impurities blown away from the blanket fabric through the conical net until the gas blows to the second flow sensor to detect the current gas flow value, and then calculate the front and back flow difference through the control panel to achieve the effect of air permeability detection.

[0022] In summary, the present invention mainly has the following beneficial effects: By setting up a detection component, it is used to realize the air permeability detection of the blanket fabric, avoiding the defect of the existing technology that the fiber gaps are pried open when the pumped air flow is blown to the blanket, resulting in a large deviation between the detection data and the actual performance. At the same time, the clamping component can be used to tightly clamp the blanket fabric to prevent gas leakage. By setting up an air pump, when in use, the air pump can be turned on to blow out through the first flow sensor and detect the current gas flow value.

[0023] By setting a support ring, when in use, the blanket fabric to be tested can be placed on the support ring, and then the top seat can be flipped by the hinge to press the blanket fabric. The gas during detection will pass through the blanket fabric and the second flow sensor will detect the current gas flow value passing through. The front and back flow difference is then calculated through the control panel to achieve the effect of air permeability detection. A spring is set to push the support ring to lift the blanket fabric to fit the air outlet. At the same time, the sealing ring can be used to prevent the gas from flowing out of the gap.

[0024] By providing a threaded ring, when in use, the first hand-tightened bolt can be rotated, and the first hand-tightened bolt can support the side block through the cooperation of the threaded ring, thereby clamping the fabric on the support ring and the top seat, thereby increasing the sealing performance. At the same time, the fabric can be supported by the support net, which can avoid the fabric being deformed by the impact of gas during detection. By providing a spray hole plate, when in use, the gas will be blown to the impeller through the sealed bearing to rotate it, thereby disturbing and redistributing the airflow, realizing uniform diffusion and buffering of the airflow, effectively reducing the instantaneous impact force of the airflow on the blanket fabric, and then forming multiple evenly distributed airflows through the spray hole plate, effectively reducing the impact force of the airflow on the blanket fabric, avoiding the fiber gap from being pried open, thereby improving the accuracy and stability of the air permeability detection.

[0025] A conical net is provided to cooperate with a collection ring to intercept and collect impurities such as fluff and dust blown from the blanket fabric, preventing the impurities from affecting the detection of the second flow sensor along with the airflow. A second hand-tightened bolt is provided to be threadedly connected to the thread groove to install the top seat and the base. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the top seat structure of the present invention when viewed from above; Figure 3It is a schematic diagram of the cross-sectional structure of the base of the present invention; Figure 4 This is a schematic diagram of the cross-sectional structure of the support ring of the present invention; Figure 5 It is a schematic diagram of the side block structure of the present invention; Figure 6 yes Figure 3 Schematic diagram of the locally enlarged structure of A in the middle.

[0027] 1. Assembly of the present invention; 2. Assembly of the present invention; 3. Assembly of the present invention; 4. Assembly of the present invention; 5. Assembly of the present invention; 6. Assembly of the present invention; 7. Assembly of the present invention; 8. Assembly of the present invention; 9. Assembly of the present invention; 10. Assembly of the present invention; 11. Assembly of the present invention; 12. Assembly of the present invention; 13. Assembly of the present invention; 14. Assembly of the present invention; 15. Assembly of the present invention; 16. Assembly of the present invention; 17. Assembly of the present invention; 18. Assembly of the present invention; 19. Assembly of the present invention; 20. Assembly of the present invention; 21. Assembly of the present invention; 22. Assembly of the present invention; 23. Assembly of the present invention; 24. Assembly of the present invention; 25. Assembly of the present invention; 26. Assembly of the present invention; 27. Assembly of the present invention; 28. Assembly of the present invention; 29. ​​Assembly of the present invention; 30. Assembly of the present invention; 31. Assembly of the present invention; 32. Assembly of the present invention; 33. Assembly of the present invention; 34. Assembly of the present invention; 35. Assembly of the present invention; 36. Assembly of the present invention; 37. Assembly of the present invention; 38. Assembly of the present invention; 39. Assembly of the present invention; 40. Assembly of the present invention; 41. Assembly of the present invention; 42. Assembly of the present invention; 43. Assembly of the present invention; 44. Assembly of the present invention; 45. Assembly of the present invention; 46. Assembly of the present invention; 47. Assembly of the present invention; 48. Assembly of the present invention; 49. Assembly of the present invention; 50 DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] The following examples are intended to illustrate the present invention but are not intended to limit the scope of protection of the present invention. The conditions in the examples may be further adjusted according to specific conditions. Simple improvements to the method of the present invention within the scope of the present invention are also within the scope of protection claimed in the present invention.

[0030] refer to Figures 1-6, a blanket fabric air permeability detection device, comprising: a top seat 100, a base 200 is provided on the bottom surface of the top seat 100, two hinges 300 are fixedly installed on the bottom surface of the base 200, the hinges 300 are fixedly connected to the top seat 100, a control panel 400 is embedded in one side of the base 200, a detection component 500 is provided on one side of the top seat 100 for detecting air permeability, and a clamping component 600 is provided on the outer wall of the base 200 for clamping the fabric. By setting the detection component 500, the air permeability detection of the blanket fabric is realized, avoiding the defect of the prior art that when the pumped air flow blows towards the blanket, the fiber gap is pried larger, resulting in a large deviation between the detection data and the actual performance. At the same time, the clamping component 600 can be used to detect the air permeability of the blanket fabric. In order to tightly clamp the blanket fabric to prevent gas leakage, the detection component 500 includes: an air pump 501, the air pump 501 is embedded in one side of the top seat 100, and a top hole 502 is provided on the top surface of the top seat 100. A first flow sensor 503 is fixedly installed inside the top hole 502. The first flow sensor 503 is fixedly connected to the air outlet end of the air pump 501 through a hose. An air outlet hole 504 is provided on the bottom surface of the top seat 100, and the air outlet hole 504 is communicated with the top hole 502. The air pump 501 and the first flow sensor 503 are both electrically connected to the control panel 400. By setting up the air pump 501, when in use, the air pump 501 can be turned on to blow out through the first flow sensor 503 and detect the current gas flow value.

[0031] refer to Figures 1-6 The detection component 500 also includes: a top groove 505, the top groove 505 is opened on the top surface of the base 200, and a bottom hole 506 is opened on the bottom surface of the top groove 505. A second flow sensor 507 is fixedly installed inside the bottom hole 506. The second flow sensor 507 is electrically connected to the control panel 400. A support groove 508 is opened on the inner wall of the top groove 505. A support ring 509 is sleeved inside the support groove 508. A support net 510 is fixedly installed inside the support ring 509. By setting the support ring 509, when in use, the blanket fabric to be detected can be placed on the support ring 509, and then the top base 10 can be flipped over by the hinge 300. 0 presses the blanket fabric, and the gas during detection will pass through the blanket fabric and the second flow sensor 507 will detect the current gas flow value, and then the front and rear flow difference will be calculated through the control panel 400 to achieve the effect of air permeability detection. The detection component 500 also includes: a plurality of inner grooves 511, and the plurality of inner grooves 511 are all opened on the bottom surface of the top groove 505. A spring 512 is fixedly installed inside the top groove 505, and a sealing ring 513 is fixedly installed on the outer wall of the support ring 509. The spring 512 is provided to push the support ring 509 to lift the blanket fabric to fit the air outlet 504, and at the same time, the sealing ring 513 can be used to prevent the gas from flowing out of the gap.

[0032] refer to Figures 1-6, the clamping assembly 600 includes: two threaded rings 601, the two threaded rings 601 are fixedly mounted on the outer wall of the base 200, the internal threads of the threaded rings 601 are connected with the first hand-tightening bolts 602, and the outer wall of the support ring 509 is fixedly mounted with two side blocks 603. By setting the threaded rings 601, when in use, the first hand-tightening bolts 602 can be rotated, and the side blocks 603 can be pushed by the first hand-tightening bolts 602 through the cooperation of the threaded rings 601, thereby clamping the fabric on the support ring 509 with the top seat 100 to increase the sealing performance. At the same time, the fabric can be supported by the support net 510 to avoid deformation of the fabric caused by gas impact during detection. The clamping assembly 600 also includes: mounting slots 6 04. The mounting groove 604 is provided on the inner wall of the air outlet 504. A sealed bearing 605 is fixedly installed inside the mounting groove 604. An impeller 606 is fixedly installed on the inner ring of the sealed bearing 605. A spray hole plate 607 is fixedly installed inside the mounting groove 604. By setting the spray hole plate 607, when in use, the gas will be blown to the impeller 606 and rotated through the sealed bearing 605, thereby disturbing and redistributing the airflow, realizing uniform diffusion and buffering of the airflow, effectively reducing the instantaneous impact force of the airflow on the blanket fabric, and then forming multiple evenly distributed airflows to be ejected through the spray hole plate 607, effectively reducing the impact force of the airflow on the blanket fabric, avoiding the fiber gap from being pried open, thereby improving the accuracy and stability of the air permeability detection.

[0033] refer to Figures 1-6 The clamping assembly 600 also includes: a collecting ring 608, which is arranged inside the top groove 505, and a conical net 609 is fixedly installed inside the collecting ring 608. The conical net 609 is provided to cooperate with the collecting ring 608 to intercept and collect impurities such as fluff and dust blown away from the blanket fabric, so as to prevent the impurities from affecting the detection of the second flow sensor 507 with the airflow. The top surface of the top seat 100 is provided with two connecting holes 700, and the interior of the connecting hole 700 is provided with a second hand-tightening bolt 701. The top surface of the base 200 is provided with two threaded grooves 702, which are threadedly connected to the threaded groove 702 by providing the second hand-tightening bolt 701 to install the top seat 100 and the base 200.

[0034] refer to Figures 1-6 A method for using a blanket fabric air permeability detection device comprises the following steps: Step 1: Lay the blanket fabric to be tested flat on the support ring 509. The spring 512 will lift the blanket fabric to fit the air outlet 504. Then, flip the top seat 100 through the hinge 300, rotate the second hand-tightening bolt 701 and thread the thread groove 702 to install the top seat 100 and the base 200. Then, rotate the first hand-tightening bolt 602 to support the side block 603, clamping the fabric on the support ring 509 with the top seat 100 to increase the sealing performance. Step 2: Start the air pump 501 through the control panel 400. Gas is blown out by the first flow sensor 503, and the current gas flow value is detected. The gas is blown to the impeller 606 and rotated through the sealed bearing 605, disturbing and redistributing the airflow. The airflow is then ejected through the orifice plate 607 to form multiple evenly distributed airflows. In conjunction with the support net 510, the impact of the airflow on the blanket fabric is effectively reduced, preventing the fiber gaps from being pried open, thereby improving the accuracy and stability of the air permeability test. Step 3: The conical net 609 is used to intercept and collect impurities such as fluff and dust blown away from the blanket fabric until the gas is blown to the second flow sensor 507 to detect the current gas flow value, and then the front and rear flow difference is calculated through the control panel 400 to achieve the effect of air permeability detection.

[0035] Working principle: Please refer to Figures 1-6 As shown, when in use, the blanket fabric to be tested is spread flat on the support ring 509, the spring 512 will lift the blanket fabric to fit the air outlet 504, and then the top seat 100 is flipped over by the hinge 300, the second hand-tightening bolt 701 and the threaded groove 702 are screwed together to install the top seat 100 and the base 200, and then the first hand-tightening bolt 602 is rotated to support the side block 603, and the fabric on the support ring 509 is clamped with the top seat 100 to increase the sealing, and the air pump 501 is started through the control panel 400 to blow out the gas from the first flow sensor 503, and the current gas flow value passing through is detected. The air blown toward the impeller 606 rotates through the sealed bearing 605, disturbing and redistributing the airflow, and then ejecting multiple evenly distributed airflows through the nozzle plate 607. Cooperating with the support net 510, the impact of the airflow on the blanket fabric is effectively reduced to prevent the fiber gap from being pried open, thereby improving the accuracy and stability of the air permeability detection. The conical net 609 intercepts and collects impurities such as fluff and dust blown away from the blanket fabric until the gas is blown toward the second flow sensor 507 to detect the current gas flow value, and then the front and rear flow difference is calculated through the control panel 400 to achieve the effect of air permeability detection.

[0036] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that, unless otherwise defined, the technical or scientific terms used in the present invention shall have the ordinary meanings understood by persons having ordinary skills in the field to which the present invention belongs. The words "include" or "comprise" and the like used in the present invention mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. The words "connect" or "connected" and the like are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. The words "upper", "lower", "left", "right", etc. are only used to indicate relative position relationships. When the absolute position of the described object changes, the relative position relationship may also change accordingly.

[0037] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A blanket fabric air permeability detection device, characterized in that: include: A top seat (100), wherein a base (200) is provided on the bottom surface of the top seat (100), two hinges (300) are fixedly mounted on the bottom surface of the base (200), and the hinges (300) are fixedly connected to the top seat (100), and a control panel (400) is embedded in one side of the base (200); a detection component (500), the detection component (500) being arranged on one side of the top seat (100) and being used for detecting air permeability; A clamping assembly (600) is provided on the outer wall of the base (200) and is used for clamping fabric.

2. A blanket fabric air permeability detection device according to claim 1, characterized in that: The detection component (500) comprises: An air pump (501) is embedded in one side of the top seat (100), a top hole (502) is provided on the top surface of the top seat (100), a first flow sensor (503) is fixedly installed inside the top hole (502), the first flow sensor (503) is fixedly connected to the air outlet end of the air pump (501) through a hose, an air outlet hole (504) is provided on the bottom surface of the top seat (100), the air outlet hole (504) is connected to the top hole (502), and the air pump (501) and the first flow sensor (503) are both electrically connected to the control panel (400).

3. The blanket fabric air permeability detection device according to claim 1, characterized in that: The detection component (500) further includes: A top groove (505) is provided on the top surface of the base (200), a bottom hole (506) is provided on the bottom surface of the top groove (505), a second flow sensor (507) is fixedly installed inside the bottom hole (506), the second flow sensor (507) is electrically connected to the control panel (400), a support groove (508) is provided on the inner wall of the top groove (505), a support ring (509) is sleeved inside the support groove (508), and a support net (510) is fixedly installed inside the support ring (509).

4. A blanket fabric air permeability detection device according to claim 3, characterized in that: The detection component (500) further includes: A plurality of inner grooves (511) are provided, wherein the plurality of inner grooves (511) are all provided on the bottom surface of the top groove (505), a spring (512) is fixedly installed inside the top groove (505), and a sealing ring (513) is fixedly installed on the outer wall of the support ring (509).

5. A blanket fabric air permeability detection device according to claim 4, characterized in that: The clamping assembly (600) comprises: Two threaded rings (601), both of which are fixedly mounted on the outer wall of the base (200), the inner threads of the threaded rings (601) are connected with first hand-tightened bolts (602), and the outer wall of the support ring (509) is fixedly mounted with two side blocks (603).

6. A blanket fabric air permeability detection device according to claim 2, characterized in that: The clamping assembly (600) further comprises: A mounting groove (604) is provided on the inner wall of the air outlet hole (504), a sealed bearing (605) is fixedly mounted inside the mounting groove (604), an impeller (606) is fixedly mounted on the inner ring of the sealed bearing (605), and a spray hole plate (607) is fixedly mounted inside the mounting groove (604).

7. The blanket fabric air permeability detection device according to claim 3, characterized in that: The clamping assembly (600) further comprises: A collecting ring (608) is provided inside the top groove (505), and a conical net (609) is fixedly installed inside the collecting ring (608).

8. The blanket fabric air permeability detection device according to claim 1, characterized in that: The top surface of the top seat (100) is provided with two connection holes (700), the interior of the connection holes (700) is sleeved with a second hand-tightened bolt (701), and the top surface of the base (200) is provided with two threaded grooves (702).

9. A method for using a blanket fabric air permeability detection device, based on the blanket fabric air permeability detection device according to any one of claims 1 to 8, characterized in that: The steps include: Step 1: Lay the blanket fabric to be tested flat on the support ring (509), the spring (512) will lift the blanket fabric to fit the air outlet (504), then flip the top seat (100) through the hinge (300), rotate the second hand-tightening bolt (701) and the threaded groove (702) to threadedly connect, install the top seat (100) and the base (200), then rotate the first hand-tightening bolt (602) to support the side block (603), clamp the fabric on the support ring (509) and the top seat (100) to increase the sealing performance; Step 2: Start the air pump (501) through the control panel (400), blow out the gas through the first flow sensor (503), and detect the current gas flow value. The gas will be blown to the impeller (606) through the sealed bearing (605) to rotate it, disturbing and redistributing the airflow, and then forming multiple airflows with uniform distribution through the orifice plate (607). In conjunction with the support net (510), the impact force of the airflow on the blanket fabric is effectively reduced, and the fiber gap is prevented from being pried open, thereby improving the accuracy and stability of the air permeability detection; Step three: The conical net (609) is used to intercept and collect impurities such as fluff and dust blown from the blanket fabric until the gas is blown to the second flow sensor (507) to detect the current gas flow value, and then the front and rear flow difference is calculated through the control panel (400) to achieve the effect of air permeability detection.

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