Sweater air permeability detection device

Abstract

The present invention relates to the technical field of air permeability detection, and in particular to a sweater air permeability detection device, comprising a device body and an operation cabin, wherein the operation cabin covers the detection port of the device body, and a dehumidification module is also installed on the device body in the operation cabin; the dehumidification module comprises an outer cylinder, an air guide cylinder is correspondingly arranged above the outer cylinder, an air suction mechanism is arranged in the air guide cylinder, an air outlet pipe is arranged on the air guide cylinder, a base is fixed at the bottom end of the outer cylinder, a plurality of air inlets are opened in the circumferential direction through the lower part of the outer cylinder, a plurality of lifting rods are fixed in the circumferential direction at the top end of the outer cylinder, and a heating mechanism is arranged in the outer cylinder. The present invention can greatly reduce the influence of moisture in the outside air on the air permeability measurement result by installing an operation cabin on the detection port of the device, and the dehumidification module is provided with a plurality of flappers to flap the sweater sample, so that the yarn fibers of the sweater sample are loosened, which is more conducive to the vaporization and overflow of the absorbed moisture therein, thereby achieving a better dehumidification effect.

Description

Technical Field

[0001] The invention relates to the technical field of air permeability detection, and in particular to an air permeability detection device for sweaters. Background Art

[0002] For knitted fabrics such as sweaters, their air permeability first increases and then decreases with the increase of moisture content. During the air permeability process, gas passes through two pathways: fabric pores and gaps between fibers in yarns. Generally, fabric pores are the main pathway. After the knitted fabric is wetted, the fibers swell. However, since the knitted fabric is woven by forming coils, the structure is relatively loose, and the activity space of the yarn is relatively large, so the gaps between the yarns will not be significantly smaller. On the contrary, after the knitted fabric is wetted, the surface hairiness collapses, the fabric thickness decreases, the length of the air permeable channel in the fabric decreases, the air permeability increases, and the air permeability increases, that is, the air permeability of the wetted fabric increases. As the moisture content further increases, water mainly exists in the form of free water, occupying the pores of the knitted fabric, and easily forming a continuous water film between the fibers, and the air permeability decreases accordingly.

[0003] When using the air permeability tester to test the air permeability of sweaters, some of the sweater samples taken out absorb moisture due to reasons such as the humid environment. If the samples after absorbing moisture are directly used for testing, the test results will not accurately reflect the normal air permeability of the sweater. For this reason, the samples need to be dried. However, the traditional drying method adopts a combination of drying and air drying. However, this drying method has a good drying effect on the free water in the pores of the sweater. However, when the sweater is thicker and the moisture absorbed by the sweater yarn fiber and the surface down is more, it is difficult to remove it quickly. In order not to damage the down layer on the surface of the sweater, the drying and air drying temperatures cannot be too high, which leads to a slow drying speed. After the sweater is dried, it is sent to the detection port of the detection device for air permeability measurement. If the humidity of the environment around the detection device is high, the sweater will absorb moisture for a short time, which will also affect the measurement results. Summary of the invention

[0004] The purpose of the present invention is to solve the disadvantages in the prior art that the humidity of the environment around the detection device is relatively high, and the measurement result will be affected after the sweater absorbs moisture for a short time, and a sweater air permeability detection device is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A sweater air permeability detection device is designed, comprising a device body and an operation cabin, wherein the operation cabin covers a detection port of the device body, an air intake pipe and an exhaust pipe are arranged on the operation cabin, the air intake pipe is used to connect an air dryer, and a dehumidification module is also installed on the device body in the operation cabin;

[0007] The dehumidification module includes an outer cylinder, an air guide cylinder, a base, an air inlet, an air outlet pipe, a sealing cover, a vertical rod, a friction plate, and an air suction mechanism. An air guide cylinder is correspondingly arranged above the outer cylinder, an air suction mechanism is arranged inside the air guide cylinder, an air outlet pipe is arranged on the air guide cylinder, and the air outlet pipe is used to connect with the exhaust pipe; the outer cylinder and the inner cylinder are sleeved together by a docking cylinder; a base is fixed to the bottom end of the outer cylinder, a plurality of air inlets are circumferentially penetrated through the lower part of the outer cylinder, a plurality of lifting rods are fixed circumferentially at the top end of the outer cylinder, a heating mechanism is arranged inside the outer cylinder, and the heating mechanism is used to heat the air in the outer cylinder.

[0008] Preferably, the air suction mechanism includes a drive shaft, a motor, and blades. The drive shaft is coaxially and rotatably installed in the air guide cylinder. The drive shaft is transmission-connected to the motor, and the motor is fixed on the air guide cylinder. A plurality of blades are circumferentially arranged on the lower surface of the drive shaft.

[0009] Preferably, the heating mechanism comprises an inner cylinder, a sealing cover, a vertical rod, a lifting rod, a flapper, a first magnetic block, a second magnetic block, a friction plate, and an elastic element. The inner cylinder is fixed on the base in the outer cylinder, a gap is left between the outer wall of the inner cylinder and the inner wall of the outer cylinder, a sealing cover is fixed on the top of the inner cylinder, a plurality of vertical rods are arranged on the sealing cover around the central axis, the vertical rods are arranged in a one-to-one correspondence with the blades, and the vertical rods are staggered with the lifting rods, the bottom ends of the vertical rods are connected to the base through elastic elements, each of the vertical rods is telescopically mounted with a friction plate along the radial direction of the inner cylinder, the friction plate is in contact with the inner wall of the inner cylinder, a flapper is fixed on the top of each of the vertical rods, a first magnetic block is fixed on the flapper, a second magnetic block is fixed on each of the blades, and the second magnetic block and the first magnetic block attract each other;

[0010] The flapper has two working states: when the second magnetic block generates a magnetic force on the first magnetic block, the second magnetic block drives the vertical rod to move upward, so that the flapper at the top of the vertical rod rises to the same height as the lifting rod; when the second magnetic block does not generate a magnetic force on the first magnetic block, the flapper at the top of the vertical rod is below the lifting rod.

[0011] Preferably, the slapping device includes a clapper board, the first magnetic block is fixed on the clapper board, the clapper board is provided with an arc-shaped groove coaxially distributed with the inner cylinder, a slider is slidably installed in the arc-shaped groove, one end of the connecting rod is fixedly connected to the slider, and the other end is fixedly connected to the vertical rod, a reset spring is also placed in the arc-shaped groove, and the two ends of the reset spring are respectively fixedly connected to the slider and the inner wall of the arc-shaped groove.

[0012] Preferably, the inner cylinder is made of metal material, and a plurality of heat-conducting fins are provided on the outer wall of the inner cylinder.

[0013] Preferably, a flexible sleeve is sleeved on the vertical rod above the sealing cover, one end of the flexible sleeve is fixedly connected to the vertical rod, and the other end of the flexible sleeve is fixedly connected to the sealing cover.

[0014] Preferably, a plurality of sealing rings are coaxially fixed to the upper and lower parts of the inner wall of the docking tube, respectively, and a limiting ring for blocking the docking tube is coaxially fixed to the lower part of the outer tube.

[0015] The invention provides a sweater air permeability detection device, which has the following beneficial effects: an operation cabin is installed on the detection port of the equipment, the air near the detection port is isolated from the outside world by the operation cabin, and the internal air is dried by an air dryer connected to the operation cabin, thereby greatly reducing the influence of moisture in the outside air on the air permeability measurement result; a dehumidification module is arranged in the operation cabin, and the dehumidification module is used to quickly dehumidify the sweater sample before detection in the dry environment of the operation cabin, and the dehumidification module can also beat the sweater sample through a plurality of beaters when dehumidifying, so that the yarn fibers and surface down feathers of the sweater sample are loosened, which is more conducive to the vaporization and overflow of the absorbed moisture therein, thereby achieving a better dehumidification effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a sweater air permeability detection device proposed by the present invention;

[0017] Figure 2 A schematic diagram of the dehumidification module structure of a sweater air permeability detection device proposed by the present invention Figure 1 ;

[0018] Figure 3 A schematic diagram of the dehumidification module structure of a sweater air permeability detection device proposed by the present invention Figure 2 ;

[0019] Figure 4 A cross-sectional schematic diagram of a dehumidification module of a sweater air permeability detection device proposed by the present invention;

[0020] Figure 5 Schematic diagram of the internal structure of the dehumidification module of a sweater air permeability detection device proposed by the present invention Figure 1 ;

[0021] Figure 6 Schematic diagram of the internal structure of the dehumidification module of a sweater air permeability detection device proposed by the present invention Figure 2 ;

[0022] Figure 7 A schematic diagram of the distribution of a lifting rod and a flapper of a sweater air permeability detection device proposed by the present invention;

[0023] Figure 8This is a schematic diagram of the vertical rod structure of a sweater air permeability detection device proposed by the present invention;

[0024] Fig. 9 A schematic diagram of the top view of the structure of a flapper of a sweater air permeability detection device proposed by the present invention;

[0025] Fig.10 This is a schematic diagram of the flexible sleeve structure of a sweater air permeability detection device proposed by the present invention.

[0026] In the figure: 1. device body; 2. detection port; 3. operation cabin; 4. air inlet pipe; 5. exhaust pipe; 6. outer tube; 7. air guide tube; 8. base; 9. air inlet; 10. air outlet pipe; 11. drive shaft; 12. motor; 13. blades; 14. inner tube; 15. sealing cover; 16. vertical rod; 17. lifting rod; 18. flapper; 181. clapper board; 182. connecting rod; 183. arc-shaped slide groove; 19. second magnetic block; 20. first magnetic block; 21. friction plate; 22. elastic element; 23. heat-conducting fin; 24. docking tube; 25. retaining ring; 26. bracket; 27. flexible sleeve. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] Example 1

[0029] Reference Figure 1-7 A sweater air permeability testing device includes a device body 1 and an operation cabin 3. The operation cabin 3 covers the testing port 2 of the device body 1. The operation cabin 3 is used to isolate the testing port 2 from the external environment. The operation cabin 3 is provided with an air inlet pipe 4 and an exhaust pipe 5. The air inlet pipe 4 is used to connect to an air dryer. A check valve is installed on the exhaust pipe 5. The check valve is used to prevent the outside air from entering the operation cabin 3 through the exhaust pipe 5. A dehumidification module is also installed on the device body 1 in the operation cabin 3. An openable door is provided on the cabin body of the operation cabin 3. Since the air humidity in the external environment may interfere with the normal air permeability testing, in order to set up the operation cabin 3, the testing port 2 is isolated from the external environment by using the operation cabin 3, and the air dryer connected to the air inlet pipe 4 is used to dry the air entering the operation cabin 3, thereby greatly reducing the air humidity around the testing port 2. The dehumidification module provided in the operation cabin 3 can quickly dehumidify the sample, and the dehumidified sample is then placed on the testing port 2 for testing. A pair of embedded rubber gloves may also be provided on the operating cabin 3, so that contactless detection operations can be performed using the rubber gloves without opening the cabin door.

[0030] The dehumidification module includes an outer tube 6, an air guide tube 7, a base 8, an air inlet 9, an air outlet pipe 10, a sealing cover 15, a vertical rod 16, a friction plate 21, and an air suction mechanism. An air guide tube 7 is correspondingly arranged above the outer tube 6, and an air suction mechanism is arranged inside the air guide tube 7. The air suction mechanism is used to suck the gas inside the outer tube 6 into the air guide tube 7. An air outlet pipe 10 is arranged on the air guide tube 7, and the air outlet pipe 10 is used to connect with the exhaust pipe 5; the outer tube 6 and the inner tube 14 are sleeved together through a docking tube 24; the base 8 is fixed at the bottom end of the outer tube 6, and a plurality of air inlets 9 are opened along the circumferential direction at the lower part of the outer tube 6. A plurality of lifting rods 17 are fixed along the circumferential direction at the top end of the outer tube 6. The lifting rods 17 are L-shaped. As shown in the figure, the plurality of lifting rods 17 are arranged in a circle on the top end of the outer tube 6 to lift the sample placed therein. A heating mechanism is arranged inside the outer tube 6, and the heating mechanism is used to heat the air inside the outer tube 6. The air guide cylinder 7 is fixed on the base 8 via a bracket 26 .

[0031] The air suction mechanism includes a drive shaft 11, a motor 12, and blades 13. The drive shaft 11 is coaxially rotatably installed in the air guide cylinder 7. The drive shaft 11 is transmission-connected to the motor 12, which is fixed on the air guide cylinder 7. A plurality of blades 13 are circumferentially arranged on the lower surface of the drive shaft 11.

[0032] Example 2, reference Figure 7-10 As another preferred embodiment of the present invention, the difference from embodiment 1 is that the heating mechanism includes an inner cylinder 14, a sealing cover 15, a vertical rod 16, a lifting rod 17, a flapper 18, a first magnetic block 20, a second magnetic block 19, a friction plate 21, and an elastic element 22. The inner cylinder 14 is fixed on the base 8 in the outer cylinder 6, and a gap is left between the outer wall of the inner cylinder 14 and the inner wall of the outer cylinder 6. A sealing cover 15 is fixed on the top of the inner cylinder 14. A plurality of vertical rods 16 are arranged around the central axis of the sealing cover 15. The vertical rods 16 are arranged one by one with the blades 13, and the vertical rods 16 are staggered with the lifting rod 17. The bottom end of the vertical rod 16 is connected to the base 8 through the elastic element 22. A friction plate 21 is installed on each vertical rod 16 in a radially retractable manner along the inner cylinder 14. The radially retractable friction plate 21 can maintain stable contact with the inner cylinder 14 with the help of a built-in spring when the friction plate 21 is worn. The friction plate 21 contacts the inner wall of the inner cylinder 14, a flapper 18 is fixed to the top of each vertical rod 16, a first magnetic block 20 is fixed to the flapper 18, and a second magnetic block 19 is fixed to each blade 13, and the second magnetic block 19 and the first magnetic block 20 attract each other. The second magnetic block 19 is fixed to the outermost end of the blade 13 to reduce the influence of the second magnetic block 19 on the blade 13.

[0033] The flapper 18 has two working states: when the second magnetic block 19 generates a magnetic force on the first magnetic block 20, the second magnetic block 19 drives the vertical rod 16 to move upward, so that the flapper 18 at the top of the vertical rod 16 rises to the same height as the lifting rod 17; when the second magnetic block 19 does not generate a magnetic force on the first magnetic block 20, the flapper 18 at the top of the vertical rod 16 is below the lifting rod 17.

[0034] The heating mechanism utilizes the movement of the blades 13 in the air suction mechanism to utilize the intermittent magnetic attraction between the first magnetic block 20 and the second magnetic block 19, so that the vertical rod 16 can drive the friction plate 21 to move up and down, thereby causing the friction plate 21 to generate heat by friction with the inner cylinder 14. At the same time, by providing a flapper 18, the sweater sample can be flapped at a high frequency while the vertical rod 16 moves up and down, and the generated vibration can make the sweater sample looser and allow the moisture therein to evaporate more quickly.

[0035] As attached Fig. 9 As shown, the slapper 18 includes a clapper board 181, a first magnetic block 20 is fixed on the clapper board 181, a circular arc groove 183 coaxially distributed with the inner tube 14 is provided on the clapper board 181, a slider is slidably installed in the circular arc groove 183, one end of the connecting rod 182 is fixedly connected to the slider, and the other end is fixedly connected to the vertical rod 16, a return spring is also placed in the circular arc groove 183, and both ends of the return spring are fixedly connected to the slider and the inner wall of the circular arc groove 183 respectively. Since the material of the sweater is relatively soft, when the beater 18 beats the fixed position of the sweater, the vibration transmitted from the beat position to other positions of the sweater is relatively small, so that there are still many parts of the sweater that cannot get sufficient vibration. For this reason, the clapper 181 is set to a state where it can make a small-range circular motion, so that the clapper 181 can be moved by the first magnetic block 20, thereby driving the sweater sample on it to make a small-range circular motion synchronously, so that different parts can be aligned with the beater 18, so as to obtain a better clapping effect.

[0036] The inner cylinder 14 is made of metal material, and a plurality of heat-conducting fins 23 are arranged on the outer wall of the inner cylinder 14. The heat-conducting fins 23 are annular, coaxially arranged with the inner cylinder 14, and arranged at intervals on the outer wall of the inner cylinder 14 along the height direction. A plurality of air holes are opened through the surface, and a plurality of heat-conducting fins 23 are arranged, so that when the airflow rises along the flow channel between the inner cylinder 14 and the outer cylinder 6, more heat exchange contact area can be obtained, and the temperature rises more quickly.

[0037] A flexible sleeve 27 is sleeved on each of the vertical rods 16 above the sealing cover 15, one end of the flexible sleeve 27 is fixedly connected to the vertical rod 16, and the other end is fixedly connected to the sealing cover 15. When the friction plate 21 rubs against the inner cylinder 14, the friction plate 21 wears and generates dust. In order to prevent the dust from entering the outer cylinder 6 through the gap between the vertical rod 16 and the sealing cover 15, the flexible sleeve 27 is provided to prevent the dust from leaking out of the gap.

[0038] Several sealing rings are coaxially fixed on the upper and lower parts of the inner wall of the docking tube 24, and a limiting ring for blocking the docking tube 24 is coaxially fixed on the lower part of the outer tube 6. The friction force generated by the sealing ring on the docking tube 24 is used to limit the docking tube 24 between the air guide tube 7 and the outer tube 6.

[0039] The overall workflow of the present invention is as follows:

[0040] S1. After the operator opens the operation cabin 3, the docking tube 24 between the gas cylinder 7 and the outer cylinder 6 is moved downward to expose the area between the gas cylinder 7 and the outer cylinder 6. Then, the operator puts the sample to be tested on the lifting rod 17 distributed in a ring shape on the outer cylinder 6. Then, the operator resets the docking tube 24 so that the docking tube 24 seals the area between the gas cylinder 7 and the outer cylinder 6. Then, the operator starts the motor 12, and the motor 12 drives the driving shaft 11 in the gas cylinder 7 to rotate. When the driving shaft 11 rotates to, the blades 13 thereon will discharge the gas in the gas cylinder 7 through the gas outlet pipe 10. At this time, the gas in the outer cylinder 6 below will rise, and the gas in the operation cabin 3 will enter the outer cylinder 6 through the air inlet 9 at the lower part of the outer cylinder 6.

[0041] At the same time, when the blade 13 follows the movement of the driving shaft 11, whenever the second magnetic block 19 thereon is aligned with the first magnetic block 20 on the flapper 18 below, the second magnetic block 19 will generate an upward magnetic attraction force on the first magnetic block 20. At this time, the first magnetic block 20 will drive the vertical rod 16 connected to the flapper 18 to move upward, and the vertical rod 16 will drive the friction plate 21 connected thereto to move upward, and the flapper 18 will also rise synchronously to the same height as the lifting rod 17. At this time, the flapper 18 will flap the sample on the lifting rod 17, and because the second magnetic block 19 follows the blade 13 and also performs a circular motion synchronously, The second magnetic block 19 will cause the first magnetic block 20 to exert a force in the horizontal direction, so that the clapper 181 on the flapper 18 will synchronously make a circular motion. Due to the limiting effect of the arc-shaped slot 183 on the clapper 181, the clapper 181 can only make a small range of circular motion. When the second magnetic block 19 is offset from the first magnetic block 20, the elastic element 22 at the bottom end of the vertical rod 16 will drive the vertical rod 16 and the flapper 18 to move downward, and at the same time, the clapper 181 will be reset under the action of the reset spring in the arc-shaped slot 183. In the above process, on the one hand, the vertical rod 16 continuously moves up and down under the action of the magnetic force. The friction plate 21 installed thereon can be driven to continuously rub against the inner cylinder 14, so that the inner cylinder 14 generates heat, and the generated heat will be conducted to the heat dissipation fins between the inner cylinder 14 and the outer cylinder 6, so that the gas entering the outer cylinder 6 through the air inlet 9 will absorb the heat of the heat dissipation fins when passing between the inner cylinder 14 and the outer cylinder 6, so that the gas temperature rises, and the heated gas will pass through the sample during the process of rising to the suction cylinder, so as to air-dry the sample at a higher temperature; on the other hand, in the process of continuous up and down movement of the vertical rod 16, the flapper 18 thereon will also continuously flap the sample at a high frequency, so that The sample is vibrated, so that the yarn fibers and surface down of the sweater are loosened, which is more conducive to the evaporation and overflow of moisture in the sample. In addition, since the flapper 181 on the flapper 18 can make a small-range circular motion, the flappers 181 on the flappers 18 are in contact with the sample, and the flappers 181 on the flappers 18 are synchronously made to make a small-range circular motion, which will drive the sample to make a circular motion, so that the sample is continuously moved while being flapped by the flapper 18, so that different parts can be flapped by the flapper 18, and the parts covered by the lifting rod 17 can be exposed, so that a faster and more thorough drying effect can be obtained;

[0042] S2. After drying is completed, the operator opens the operation cabin 3, removes the docking tube 24, puts the sample into the detection port 2, uses the limiting device on the device body 1 to limit the sample, closes the operation cabin 3, and performs air permeability detection.

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A sweater air permeability detection device, comprising a device body (1) and an operating cabin (3), characterized in that: The operating cabin (3) covers the detection port (2) of the device body (1); an air intake pipe (4) and an air exhaust pipe (5) are provided on the operating cabin (3); the air intake pipe (4) is used to connect to an air dryer; and a dehumidification module is also installed on the device body (1) in the operating cabin (3); The dehumidification module comprises an outer cylinder (6), an air guide cylinder (7), a base (8), an air inlet (9), an air outlet pipe (10), a sealing cover (15), a vertical rod (16), a friction plate (21), and an air suction mechanism. An air guide cylinder (7) is correspondingly arranged above the outer cylinder (6), an air suction mechanism is arranged inside the air guide cylinder (7), an air outlet pipe (10) is arranged on the air guide cylinder (7), and the air outlet pipe (10) is used to be connected to the exhaust pipe (5); the outer cylinder (6) and the inner cylinder (14) are sleeved together through a docking cylinder (24); a base (8) is fixed at the bottom end of the outer cylinder (6), a plurality of air inlets (9) are circumferentially penetrated at the lower part of the outer cylinder (6), a plurality of lifting rods (17) are fixed at the top end of the outer cylinder (6) along the circumferential direction, and a heating mechanism is arranged inside the outer cylinder (6), and the heating mechanism is used to heat the air in the outer cylinder (6); The heating mechanism comprises an inner cylinder (14), a sealing cover (15), a vertical rod (16), a lifting rod (17), a flapper (18), a first magnetic block (20), a second magnetic block (19), a friction plate (21), and an elastic element (22). The inner cylinder (14) is fixed on a base (8) in the outer cylinder (6), a gap is left between the outer wall of the inner cylinder (14) and the inner wall of the outer cylinder (6), a sealing cover (15) is fixed on the top of the inner cylinder (14), and a plurality of vertical rods (16) are arranged around the central axis of the sealing cover (15), and the vertical rods (16) are arranged one by one corresponding to the blades (13), and the sealing cover (15) is provided with a plurality of vertical rods (16) and a plurality of vertical rods (16) and a plurality of vertical rods (16) are arranged one by one corresponding to the blades (13). The vertical rod (16) is staggered with the lifting rod (17), the bottom end of the vertical rod (16) is connected to the base (8) via an elastic element (22), each of the vertical rods (16) is provided with a friction plate (21) which is retractable along the radial direction of the inner tube (14), the friction plate (21) is in contact with the inner wall of the inner tube (14), a flapper (18) is fixed to the top of each vertical rod (16), a first magnetic block (20) is fixed to the flapper (18), and a second magnetic block (19) is fixed to each blade (13), and the second magnetic block (19) and the first magnetic block (20) attract each other; The flapper (18) has two working states: when the second magnetic block (19) generates a magnetic force on the first magnetic block (20), the second magnetic block (19) drives the vertical rod (16) to move upward, so that the flapper (18) at the top of the vertical rod (16) rises to the same height as the lifting rod (17); when the second magnetic block (19) does not generate a magnetic force on the first magnetic block (20), the flapper (18) at the top of the vertical rod (16) is located below the lifting rod (17).

2. The sweater air permeability detection device according to claim 1, characterized in that: The air suction mechanism comprises a drive shaft (11), a motor (12), and blades (13); the drive shaft (11) is coaxially rotatably mounted in an air guide cylinder (7); the drive shaft (11) is transmission-connected to the motor (12); the motor (12) is fixed on the air guide cylinder (7); and a plurality of blades (13) are circumferentially arranged on the lower surface of the drive shaft (11).

3. The sweater air permeability detection device according to claim 1, characterized in that: The slapping device (18) comprises a clapper board (181) and a connecting rod (182), wherein the first magnetic block (20) is fixed on the clapper board (181), and the clapper board (181) is provided with an arc-shaped slide groove (183) coaxially distributed with the inner cylinder (14), and a slider is slidably installed in the arc-shaped slide groove (183), one end of the connecting rod (182) is fixedly connected to the slider, and the other end is fixedly connected to the vertical rod (16), and a reset spring is also placed in the arc-shaped slide groove (183), and the two ends of the reset spring are respectively fixedly connected to the slider and the inner wall of the arc-shaped slide groove (183).

4. The sweater air permeability detection device according to claim 1, characterized in that: The inner cylinder (14) is made of metal material, and the outer wall of the inner cylinder (14) is provided with a plurality of heat-conducting fins (23).

5. The sweater air permeability detection device according to claim 1, characterized in that: A flexible sleeve (27) is sleeved on each of the vertical rods (16) above the sealing cover (15); one end of the flexible sleeve (27) is fixedly connected to the vertical rod (16) and the other end is fixedly connected to the sealing cover (15).

6. The sweater air permeability detection device according to claim 1, characterized in that: A plurality of sealing rings are coaxially fixed on the upper and lower parts of the inner wall of the docking cylinder (24), and a limiting ring for blocking the docking cylinder (24) is coaxially fixed on the lower part of the outer cylinder (6).

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