Ventilation volume detection device for breathable film production

Abstract

The invention discloses an air permeability detection device for breathable film production, and belongs to the technical field of air permeability detection.The air permeability detection device comprises a detection table, a placement mechanism for fixedly placing a breathable film needing to be detected on the detection table is arranged at the upper end of the detection table, and a detection mechanism for preventing dust from affecting a detection result is arranged at the lower end of the placement mechanism; the side end, close to the detection mechanism, of the detection table is provided with a control mechanism for controlling the detection mechanism, and the upper end of the detection mechanism is provided with a moving mechanism which enables the detection mechanism to detect the local part of the breathable film. And the processor unifies the detected data and then processes the data, so that the air permeability detection data of the breathable film is more accurate.

Description

Technical Field

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

[0002] Waterproof breathable membrane (breathing paper) is a new type of polymer waterproof material. From the production process, the technical requirements of waterproof breathable membrane are much higher than those of general waterproof materials; at the same time, from the quality point of view, waterproof breathable membrane also has functional characteristics that other waterproof materials do not have.

[0003] The Chinese patent discloses a breathable membrane production detection device with adjustable ventilation flow (Announcement No. CN114136858A), which includes a base, a second bracket, a spray marking mechanism, a fan and a clamping strip, wherein the nozzle penetrates the top of the second bracket and the bottom of the liquid storage tank and is connected to the liquid pump, and the fan is fixed on the other side of the upper end surface of the base. In the breathable membrane production detection device with adjustable ventilation flow, after the breathable membrane moves backward to between the two clamping blocks under the operation of the conveyor belt device, the two clamping blocks are close to each other, which is convenient for clamping and fixing the breathable membrane, and after the breathable membrane is lifted and inserted into the blowing channel, the wind blows from bottom to top in the blowing channel, and the permeability of the breathable membrane can be detected by using a flow meter, and the power of the fan can be adjusted at the same time, which is convenient for adjusting the ventilation flow according to the strength of the breathable performance of the breathable membrane. If the flow meter detects that the air flow meets the standard, it means that the breathable membrane is qualified, and if the air flow is detected to be not up to the standard, it means that the breathable membrane is unqualified.

[0004] During the detection process of the above-mentioned existing breathable membrane air permeability detection device, a whole piece of breathable membrane is usually placed on the upper end of the detection device to start inhaling air to test the air intake of the breathable membrane. However, due to the influence of industrial technology during the processing of the existing breathable membrane, the air holes in the breathable membrane cannot be arranged in a consistent manner, resulting in different distribution densities of the air holes in the breathable membrane and different local air permeabilities of the breathable membrane, resulting in inaccurate air permeability detection results of the breathable membrane. Therefore, the present invention provides an air permeability detection device for breathable membrane production to solve the above-mentioned problems. Summary of the invention

[0005] The object of the present invention is to provide an air permeability detection device for breathable membrane production, so as to solve the problem that the air permeability detection result of the breathable membrane is not accurate enough mentioned in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: A device for detecting air permeability for producing breathable membranes comprises a detection platform, wherein a placement mechanism for fixing a breathable membrane to be detected on the detection platform is arranged at the upper end of the detection platform, a detection mechanism for preventing dust from affecting the detection result is arranged at the lower end of the placement mechanism, a control mechanism for controlling the detection mechanism is arranged at the side end of the detection platform close to the detection mechanism, and a moving mechanism for enabling the detection mechanism to detect a part of the breathable membrane is arranged at the upper end of the detection mechanism.

[0007] As a further solution of the present invention, the placement mechanism includes a placement box, and the placement box is fixedly installed on the upper end of the detection table, the upper end of the placement box is rotatably installed with a fixed cover, the side end of the fixed cover is fixedly installed with an air intake telescopic pipe, the end of the air intake telescopic pipe away from the fixed cover is fixedly installed with an air intake hood, the lower end of the placement box is fixedly installed with an air intake pipe, the upper end of the air intake pipe is fixedly installed with an air intake telescopic pipe, and the upper end of the air intake telescopic pipe is fixedly installed with an air intake hood.

[0008] As a further solution of the present invention, the detection mechanism includes an airflow meter, and the airflow meter is fixedly installed on the side end of the intake pipe, an intake pump is fixedly installed on the lower end of the intake pipe, an intake pipe is fixedly installed on the input end of the intake pump, and a reversing valve is fixedly installed on the side end of the intake pipe close to the intake pump.

[0009] As a further solution of the present invention, an air transfer pipe is fixedly installed at one end of the reversing valve away from the air inlet pipe, an inert gas tank is fixedly installed at one end of the air transfer pipe away from the reversing valve, and the inert gas tank is fixedly installed on the side end of the detection table.

[0010] As a further solution of the present invention, a three-way pipe is fixedly installed at one end of the intake pipe away from the air pump, an exhaust pipe is fixedly installed at the upper end of the three-way pipe, an exhaust pump is fixedly installed at one end of the exhaust pipe away from the three-way pipe, and an exhaust valve is fixedly installed at the side end of the three-way pipe.

[0011] As a further scheme of the present invention, the control mechanism includes a processor, and the processor is fixedly installed on the side end of the detection table, a transmission line is fixedly installed on the side end of the processor close to the airflow device, and the other end of the transmission line is fixedly installed on the output end of the airflow device, an air detector is fixedly installed on the side end of the placement box close to the processor, a data line is fixedly installed on one end of the air detector close to the processor, and an end of the data line away from the air detector is fixedly installed on the side end of the processor, an output line is fixedly installed on the lower end of the processor, and an end of the output line away from the processor is fixedly installed on the control end of the reversing valve, a connecting line is fixedly installed on the side end of the processor, and the other end of the connecting line is fixedly installed on the control end of the exhaust valve.

[0012] As a further solution of the present invention, the moving mechanism includes a winding motor, and the winding motor is fixedly installed on the upper end of the detection platform close to the fixed cover, a winding drum is fixedly installed on the output end of the winding motor, a control rope is wound on the outer wall of the winding drum, and the air intake hood and the air suction hood are slidingly sleeved on the outer wall of the control rope, an extrusion ring is fixedly installed on one end of the air intake telescopic tube of the air intake hood, and an extrusion groove is opened at the upper end of the air suction hood.

[0013] As a further solution of the present invention, a plurality of supporting telescopic rods are rotatably mounted on the outer wall of the air intake hood, and the ends of the supporting telescopic rods away from the air intake hood are rotatably mounted on the inner wall of the placement box, a plurality of movable telescopic rods are rotatably mounted on the outer wall of the air intake hood, and the other ends of the movable telescopic rods are rotatably mounted on the inner wall of the fixed cover, control lines are fixedly mounted on the input ends of the supporting telescopic rods and the movable telescopic rods, and the other ends of the control lines are fixedly mounted on the side ends of the processor.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. When the present invention is used, after the overall air permeability test of the breathable membrane is carried out, the closed air suction hood and the air inlet hood are moved to a suitable position by starting the winding motor and controlling the supporting telescopic rod and the moving telescopic rod, so as to detect the air permeability of a local position of the breathable membrane, and the detected air permeability data is processed, so that the air permeability test data of the breathable membrane is more accurate.

[0015] 2. When the present invention is used, the air in the placement box is replaced with dust-free gas to prevent dust carried in the air from clogging the holes of the breathable membrane, causing deviations in the detection data of the breathable membrane, so that the detection process will not be affected by the air. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The figure is a schematic diagram of the main structure of an air permeability detection device for producing breathable membranes.

[0017] Figure 2 The present invention is a schematic diagram of the main rear view structure of an air permeability detection device for breathable membrane production.

[0018] Figure 3 The figure is a schematic diagram of the structure of a sealing ring in a gas permeability detection device for producing breathable membranes.

[0019] Figure 4 The present invention is a schematic diagram of the structure of a detection mechanism in an air permeability detection device for producing breathable membranes.

[0020] Figure 5 The present invention is a schematic diagram of the structure of an air hood in an air permeability detection device for producing breathable membranes.

[0021] Figure 6The present invention is a schematic diagram of the structure of a reversing valve in a gas permeability detection device for producing gas permeable membranes.

[0022] Figure 7 The present invention is a schematic diagram of the structure of an air inlet hood in an air permeability detection device for producing breathable membranes.

[0023] Figure 8 The present invention is a schematic diagram of the structure of a movable telescopic rod in an air permeability detection device for producing breathable membranes.

[0024] In the figure: 1. Testing table; 2. Placement mechanism; 201. Placement box; 202. Fixed cover; 203. Sealing ring; 204. Sealing groove; 205. Air intake telescopic pipe; 206. Air intake cover; 207. Air intake pipe; 208. Air intake telescopic pipe; 209. Air intake cover; 3. Detection mechanism; 301. Air flow device; 302. Air suction pump; 303. Air inlet pipe; 304. Reversing valve; 305. Air transfer pipe; 306. Inert gas tank; 307, three-way pipe; 308, exhaust pump; 309, exhaust pipe; 310, exhaust valve; 4. Control mechanism; 401. Processor; 402. Transmission line; 403. Air detector; 404. Data line; 405. Output line; 406. Connection line; 5. Moving mechanism; 501. Winding motor; 502. Winding drum; 503. Control rope; 504. Extrusion groove; 505. Extrusion ring; 506. Support telescopic rod; 507. Moving telescopic rod; 508. Control line. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the 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.

[0026] See also Figures 1 to 8In an embodiment of the present invention, a device for detecting air permeability for producing a breathable membrane includes a detection platform 1. A placement mechanism 2 is disposed at the upper end of the detection platform 1 to fix the breathable membrane to be detected on the detection platform 1. After the breathable membrane is placed on the placement mechanism 2, the placement mechanism 2 keeps the membrane sealed during the detection process. A detection mechanism 3 is disposed at the lower end of the placement mechanism 2 to prevent dust from affecting the detection result. The detection mechanism 3 enables the detection device to discharge air during the process of detecting the air permeability of the breathable membrane, thereby reducing the detection error. A control mechanism 4 for controlling the detection mechanism 3 is disposed at the side end of the detection platform 1 close to the detection mechanism 3. A moving mechanism 5 is disposed at the upper end of the detection mechanism 3 to enable the detection mechanism 3 to detect a part of the breathable membrane. The moving mechanism 5 enables the detection mechanism 3 to detect a part of the breathable membrane to make the detection result more accurate.

[0027] See also Figures 1 to 3 The placement mechanism 2 includes a placement box 201, and the placement box 201 is fixedly installed on the upper end of the detection table 1. A fixed cover 202 is rotatably installed on the upper end of the placement box 201. A sealing ring 203 is fixedly installed on one end of the fixed cover 202 close to the placement box 201, and a sealing groove 204 is fixedly installed on the upper end of the placement box 201 close to the sealing ring 203. The sealing ring 203 installed on the fixed cover 202 makes the fixed cover 202 rotate and cover it tightly, and the sealing ring moves into the sealing groove 204, so that the fixed cover 202 and the placement box 201 are kept sealed. An air intake telescopic pipe 205 is fixedly installed on the side end of the fixed cover 202, and the air intake telescopic pipe 204 An air intake hood 206 is fixedly installed at one end away from the fixed cover 202, an air intake pipe 207 is fixedly installed at the lower end of the placement box 201, and an air intake telescopic pipe 208 is fixedly installed at the upper end of the air intake telescopic pipe 207. The air intake telescopic pipe 205 and the air intake telescopic pipe 208 are made of retractable and foldable rubber material, and an air intake hood 209 is fixedly installed at the upper end of the air intake telescopic pipe 208. The size of the air intake hood 209 and the air intake hood 206 are matched. When the air intake hood 209 and the air intake hood 206 move, the air intake telescopic pipe 205 and the air intake telescopic pipe 208 bend and expand, so as to avoid the damage of the pipes caused by the movement of the air intake hood 209 and the air intake hood 206.

[0028] See also Figures 1 to 7The detection mechanism 3 includes an airflow meter 301, and the airflow meter 301 is fixedly installed at the side end of the suction pipe 207. The above-mentioned airflow meter 301 is a prior art and will not be described in detail here. The above-mentioned airflow meter 301 calculates the amount of gas sucked out by the suction pipe 207, so that it is more convenient to detect the air permeability of the breathable membrane. An air suction pump 302 is fixedly installed at the lower end of the suction pipe 207, and an air intake pipe 303 is fixedly installed at the input end of the suction pump 302. A reversing valve 304 is fixedly installed at the side end of the suction pipe 303 near the suction pump 302. The above-mentioned reversing valve 304 is a prior art and will not be described in detail here. The gas sucked in by the suction pump 302 is controlled by controlling the reversing valve 304, so that the air in the placement box 201 is converted into dust-free inert gas.

[0029] See also Figures 1 to 7 An air transfer tube 305 is fixedly installed at one end of the reversing valve 304 away from the air inlet pipe 303, and an inert gas tank 306 is fixedly installed at one end of the air transfer tube 305 away from the reversing valve 304. Non-toxic and harmless inert gas is stored in the inert gas tank 306, and the inert gas tank 306 is fixedly installed on the side end of the detection platform 1. The air intake pump transfers the inert gas in the inert gas tank 306 to the placement box 201 to prevent air from entering the placement box 201 and the dust carried in the air from clogging the holes in the breathable membrane, resulting in deviations in the detection data of the breathable membrane.

[0030] See also Figures 1 to 7 A three-way pipe 307 is fixedly installed at one end of the air inlet pipe 303 away from the air suction pump 302, and an exhaust pipe 309 is fixedly installed at the upper end of the three-way pipe 307, and the exhaust pipe 309 is configured as a retractable and foldable hose to prevent the fixed cover 202 from rotating and pulling the air inlet pipe 303 to cause damage to the air inlet pipe 303 when the fixed cover 202 is rotated. An exhaust pump 308 is fixedly installed at one end of the exhaust pipe 309 away from the three-way pipe 307, and an exhaust valve 310 is fixedly installed at the side end of the three-way pipe 307. The exhaust valve 310 and the reversing valve 304 can be provided with electronic control valves, which will not be described in detail here. The air in the placement box 201 is discharged through the exhaust valve 310. When the air in the placement box 201 is completely discharged, the exhaust valve 310 is closed to allow the inert gas in the placement box 201 to circulate and detect the breathable membrane.

[0031] See also Figures 1 to 8The control mechanism 4 includes a processor 401, which is a prior art and will not be described in detail herein. The exhaust valve 310 and the reversing valve 304 are controlled by the processor 401, and the processor 401 is fixedly mounted on the side end of the detection platform 1. A transmission line 402 is fixedly mounted on the side end of the processor 401 close to the airflow device 301, and the other end of the transmission line 402 is fixedly mounted on the output end of the airflow device 301. An air detector 403 is fixedly mounted on the side end of the placement box 201 close to the processor 401. The air detector 403 is a prior art and will not be described in detail herein. The air detector 403 detects the content of air components in the placement box 201. A data line 404 is fixedly mounted on one end of the air detector 403 close to the processor 401, and a data line 404 is fixedly mounted on one end of the data line 404 away from the air detector 403. At the side end of the processor 401, an output line 405 is fixedly installed at the lower end of the processor 401, and the end of the output line 405 away from the processor 401 is fixedly installed at the control end of the reversing valve 304. When the air detector 403 detects that the inert gas content in the placement box 201 reaches a certain value, the detection data is transmitted to the processor 401 through the data line 404. The processor 401 controls the rotation of the reversing valve 304 through the output line 405, and the inert gas tank 306 no longer replenishes the inert gas into the placement box 201. A connecting line 406 is fixedly installed at the side end of the processor 401, and the other end of the connecting line 406 is fixedly installed at the control end of the exhaust valve 310. When the staff controls the rotation direction of the reversing valve 304 through the processor 401, the processor 401 controls the exhaust valve 310 and the reversing valve 304 to rotate synchronously through the connecting line 406.

[0032] See also Figures 1 to 8 The moving mechanism 5 includes a winding motor 501, and the winding motor 501 is fixedly installed on the upper end of the detection platform 1 near the fixed cover 202, and the output end of the winding motor 501 is fixedly installed with a winding drum 502, and a control rope 503 is wound on the outer wall of the winding drum 502, and the air inlet hood 206 and the air suction hood 209 are slidably sleeved on the outer wall of the control rope 503, and the control rope 503 is supported and guided by a supporting pipe, and the supporting pipe is sleeved on the outer wall of the control rope 503, and the supporting pipe is fixedly installed on the outer wall of the detection platform 1. The supporting pipe is not shown in the figure. When it is necessary to move the air suction hood 209 and the control rope 503 together, the control rope 503 is supported and guided by a supporting pipe. The supporting pipe is sleeved on the outer wall of the control rope 503, and the supporting pipe is fixedly installed on the outer wall of the detection platform 1. When the air intake hood 206 is combined together, the winding motor 501 is started, and the winding drum 502 begins to rotate the winding control rope 503, so that the control rope 503 begins to shrink and tighten. At this time, the air suction hood 209 is squeezed and fitted with the air intake hood 206, and an extrusion ring 505 is fixedly installed at one end of the air intake hood 206 away from the air intake telescopic tube 205. An extrusion groove 504 is provided at the upper end of the air suction hood 209. After the extrusion ring 505 moves into the extrusion groove 504, when the air suction hood 209 detects the local position of the breathable membrane, there will be no gap between the air suction hood 209 and the air intake hood 206, so that the local detection data is more accurate.

[0033] See also Figures 1 to 8 , a plurality of supporting telescopic rods 506 are rotatably mounted on the outer wall of the air intake hood 209, and one end of the supporting telescopic rods 506 away from the air intake hood 209 is rotatably mounted on the inner wall of the placing box 201, a plurality of mobile telescopic rods 507 are rotatably mounted on the outer wall of the air intake hood 206, and the other ends of the mobile telescopic rods 507 are rotatably mounted on the inner wall of the fixed cover 202, when the supporting telescopic rods 506 and the mobile telescopic rods 507 are not working, the mobile telescopic rods 507 and the supporting telescopic rods 506 remain in a retracted state, and when the mobile telescopic rods 507 and the supporting telescopic rods 506 are working, the mobile telescopic rods 507 As the supporting telescopic rod 506 begins to extend, the air suction hood 209 and the air intake hood 206 are moved to appropriate positions. The supporting telescopic rod 506 and the movable telescopic rod 507 are both electronic telescopic rods in the prior art and will not be described in detail herein. The input ends of the supporting telescopic rod 506 and the movable telescopic rod 507 are both fixedly installed with a control line 508, and the other ends of the control lines 508 are fixedly installed on the side ends of the processor 401, so that the processor 401 controls the supporting telescopic rod 506 and the movable telescopic rod 507 to move synchronously to appropriate positions through the control lines 508 to perform local detection on the breathable membrane.

[0034] The working principle of the present invention is: when the air permeability of the breathable membrane needs to be tested, the breathable membrane is placed on the upper end of the placement box 201, the fixed cover 202 is rotated, and the sealing ring on the upper end of the fixed cover 202 moves to the sealing groove 204, and the placement box 201 is sealed to prevent the test result from being affected by external factors; After the placement box 201 is sealed, the processor 401 is controlled to control the reversing valve 304 to rotate through the output line 405. At the same time, the processor 401 controls the exhaust valve 310 to open through the connecting line 406, so that the suction pump 302 is connected to the air transmission pipe 305, and the suction pump 302 and the exhaust pump 308 are started, so that the inert gas in the inert gas tank 306 is transmitted to the placement box 201 through the air transmission pipe 305, and the air exhaust telescopic pipe in the placement box 201 is transmitted to the exhaust valve 310, so that the placement box 201 is filled with dust-free inert gas, thereby preventing the dust carried in the air from clogging the holes of the breathable membrane, resulting in excessive deviation in the detection data of the breathable membrane; When the placement box 201 is filled with dust-free inert gas, the data detected by the air detector 403 is transmitted to the processor 401 through the data line 404, so that the processor 401 controls the reversing valve 304 to connect the suction pump 302 with the air inlet pipe 303, and closes the exhaust valve 310, so that the inert gas circulates in the placement box 201, thereby preventing the air outside the placement box 201 from affecting the detection data; After the overall air permeability test of the breathable membrane is performed, the winding motor 501 is started, the winding drum 502 starts to rotate, and the control rope 503 starts to wind and shrink, so that the control rope 503 starts to shrink and tighten, so that the air suction hood 209 and the air inlet hood 206 are fitted together, and the processor 401 controls the supporting telescopic rod 506 and the moving telescopic rod 507 to move the closed air suction hood 209 and the air inlet hood 206 to a suitable position, so as to detect the air permeability of a local position of the breathable membrane, and the processor 401 processes and analyzes the detected data, so as to make the air permeability detection data of the breathable membrane more accurate.

[0035] 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 gas permeability detection device for gas permeable membrane production, comprising a detection table (1), characterized in that: The upper end of the detection platform (1) is provided with a placement mechanism (2) for fixing a breathable membrane to be detected on the detection platform (1); the lower end of the placement mechanism (2) is provided with a detection mechanism (3) for preventing dust from affecting the detection result; the side end of the detection platform (1) close to the detection mechanism (3) is provided with a control mechanism (4) for controlling the detection mechanism (3); and the upper end of the detection mechanism (3) is provided with a moving mechanism (5) for enabling the detection mechanism (3) to detect a part of the breathable membrane.

2. The air permeability detection device for breathable film production according to claim 1, characterized in that: The placement mechanism (2) comprises a placement box (201), and the placement box (201) is fixedly mounted on the upper end of the detection table (1); a fixed cover (202) is rotatably mounted on the upper end of the placement box (201); an air intake telescopic pipe (205) is fixedly mounted on the side end of the fixed cover (202); an air intake hood (206) is fixedly mounted on the end of the air intake telescopic pipe (205) away from the fixed cover (202); an air intake pipe (207) is fixedly mounted on the lower end of the placement box (201); an air intake telescopic pipe (208) is fixedly mounted on the upper end of the air intake pipe (207); and an air intake hood (209) is fixedly mounted on the upper end of the air intake telescopic pipe (208).

3. The air permeability detection device for breathable film production according to claim 2, characterized in that: The detection mechanism (3) comprises an airflow device (301), and the airflow device (301) is fixedly mounted on the side end of the air intake pipe (207), an air intake pump (302) is fixedly mounted on the lower end of the air intake pipe (207), an air intake pipe (303) is fixedly mounted on the input end of the air intake pump (302), and a reversing valve (304) is fixedly mounted on the side end of the air intake pipe (303) close to the air intake pump (302).

4. The air permeability detection device for breathable film production according to claim 3, characterized in that: An air transfer pipe (305) is fixedly mounted on one end of the reversing valve (304) away from the air inlet pipe (303), an inert gas tank (306) is fixedly mounted on one end of the air transfer pipe (305) away from the reversing valve (304), and the inert gas tank (306) is fixedly mounted on a side end of the detection platform (1).

5. The air permeability detection device for breathable film production according to claim 4, characterized in that: A three-way pipe (307) is fixedly mounted on one end of the air inlet pipe (303) away from the air suction pump (302); an exhaust pipe (309) is fixedly mounted on the upper end of the three-way pipe (307); an exhaust pump (308) is fixedly mounted on one end of the exhaust pipe (309) away from the three-way pipe (307); and an exhaust valve (310) is fixedly mounted on the side end of the three-way pipe (307).

6. The air permeability detection device for breathable film production according to claim 4, characterized in that: The control mechanism (4) comprises a processor (401), and the processor (401) is fixedly mounted on a side end of the detection platform (1); a transmission line (402) is fixedly mounted on the side end of the processor (401) close to the airflow device (301), and the other end of the transmission line (402) is fixedly mounted on the output end of the airflow device (301); and an air detector (403) is fixedly mounted on the side end of the placement box (201) close to the processor (401).

7. The air permeability detection device for breathable film production according to claim 6, characterized in that: A data line (404) is fixedly installed at one end of the air detector (403) close to the processor (401), and an end of the data line (404) away from the air detector (403) is fixedly installed on the side end of the processor (401); an output line (405) is fixedly installed at the lower end of the processor (401), and an end of the output line (405) away from the processor (401) is fixedly installed on the control end of the reversing valve (304); a connecting line (406) is fixedly installed at the side end of the processor (401), and the other end of the connecting line (406) is fixedly installed on the control end of the exhaust valve (310).

8. The air permeability detection device for breathable film production according to claim 2, characterized in that: The moving mechanism (5) comprises a winding motor (501), and the winding motor (501) is fixedly mounted on the upper end of the detection platform (1) close to the fixed cover (202), and a winding drum (502) is fixedly mounted on the output end of the winding motor (501).

9. The air permeability detection device for breathable film production according to claim 8, characterized in that: A control rope (503) is wound and installed on the outer wall of the winding drum (502), and the air intake hood (206) and the air suction hood (209) are slidably sleeved on the outer wall of the control rope (503); an extrusion ring (505) is fixedly installed on one end of the air intake hood (206) away from the air intake telescopic tube (205), and an extrusion groove (504) is opened at the upper end of the air suction hood (209).

10. The air permeability detection device for breathable film production according to claim 9, characterized in that: A plurality of supporting telescopic rods (506) are rotatably mounted on the outer wall of the air intake hood (209), and one end of the supporting telescopic rods (506) away from the air intake hood (209) is rotatably mounted on the inner wall of the placement box (201); a plurality of movable telescopic rods (507) are rotatably mounted on the outer wall of the air intake hood (206), and the other ends of the movable telescopic rods (507) are rotatably mounted on the inner wall of the fixed cover (202); control lines (508) are fixedly mounted on the input ends of the supporting telescopic rods (506) and the movable telescopic rods (507), and the other ends of the control lines (508) are fixedly mounted on the side ends of the processor (401).

Images