An oil-free non-rust cold-rolled plain carbon substrate cold-rolling gas supply device

Abstract

The application discloses an oil-free and rust-free cold-rolled general carbon substrate cold-rolled gas supply device, and belongs to the technical field of auxiliary devices of a steel rolling production line. The technical scheme is as follows: the oil-free and rust-free cold-rolled general carbon substrate cold-rolled gas supply device comprises an air compressor, a gas storage tank communicated with the air compressor, a plurality of air pipes communicated with the gas storage tank, a gas distribution bag connected with the air pipes, an air suction device arranged in the air pipes and used for uniformly transporting air, and a supporting assembly connected with the air suction device and used for supporting the air suction device. The gas distribution bag is communicated with an air inlet pipe communicated with the air pipes, a plurality of air outlet pipes are communicated with the circumferential wall of the air inlet pipe, the diameters of the plurality of air outlet pipes gradually increase from the air inlet pipe to the air outlet pipes far away from the air inlet pipe, and the air is sprayed to the steel plates by nozzles, so that the blowing effect of the steel plates on a plurality of rolling mills is the same.

Description

TECHNICAL FIELD

[0001] The application relates to an auxiliary device for a steel rolling production line, in particular to a cold-rolled plain carbon substrate cold-rolling gas supply device without oiling and rusting. BACKGROUND

[0002] At present, the plain carbon substrate, also known as the ordinary carbon structural steel plate, is made by rolling mill cold rolling, cold rolling is to use hot-rolled steel coil as raw material, and the rolling is carried out at room temperature below the recrystallization temperature, including plates and coils, and thick steel plates are rolled into thin steel plates through multiple rolling; after the rolling of the steel plate is completed, a gas supply device is installed on the rolling mill, the gas supply device compresses air and sends it to a blowing device, and the blowing device sprays the compressed air to the surface of the steel plate to clean the steel plate.

[0003] In the related technology, a cold-rolled gas supply device includes an air compressor, a gas storage tank and a gas distribution bag, the air compressor is connected with the gas storage tank through a pipeline, the gas storage tank is connected with air pipes, the air pipes are provided in plurality, the gas distribution bag is provided in plurality, one gas distribution bag is connected with one air pipe and corresponds to one rolling mill, a plurality of air outlet pipes are connected with the circumferential wall of the gas distribution bag, and a plurality of air blowing pipes are connected with the air outlet pipes respectively; the rolling mill is fixedly connected with a mounting frame, the mounting frame is fixedly connected with a blowing device, the blowing device includes a blowing pipe and a nozzle, the length direction of the blowing pipe is perpendicular to the discharging direction, the blowing pipe is connected with a connecting pipe, the air blowing pipes are all connected with the connecting pipe, an electromagnetic valve is installed on the connecting pipe, the circumferential wall of the blowing pipe is connected with air injection pipes, the air injection pipes are provided in plurality, the air injection pipes are arranged at equal intervals in the length direction of the blowing pipe, the nozzle is provided in plurality, and the nozzles are respectively connected with the air injection pipes and are arranged close to the steel plate. The air compressor compresses air and transmits it into the gas storage tank, the air in the gas storage tank is transported into the gas distribution bags through the air pipes, so that the pressure of the gas is more stable, the electromagnetic valve is opened, the air in the gas distribution bag enters the blowing pipe through the air blowing pipe, the air in the air blowing pipe enters the air injection pipes, and the air is sprayed onto the steel plate through the nozzle to clean the steel plate.

[0004] According to the related technology, the inventor believes that when the gas in the gas storage tank enters the gas distribution bag, the air entering the plurality of gas distribution bags may be uneven, which may cause the air pressure in each gas distribution bag to be different, and thus the air pressure at the air outlet end of the nozzle fixed on each rolling mill is different, and the cleaning effect on the steel plate is different. SUMMARY

[0005] In order to make the cleaning effect on the steel plate of the plurality of rolling mills the same, the application provides a cold-rolled plain carbon substrate cold-rolling gas supply device without oiling and rusting.

[0006] The cold-rolled plain carbon substrate cold-rolling gas supply device without oiling and rusting provided by the application adopts the following technical scheme:

[0007] The application discloses an oil-free and rust-free cold-rolled plain carbon substrate cold-rolled gas supply device, which comprises an air compressor, a gas storage tank communicated with the air compressor, a plurality of air pipes communicated with the gas storage tank, a gas distribution bag connected with the air pipes, an air suction device arranged in the air pipes and used for uniformly transporting air, and a supporting assembly connected with the air suction device, wherein the air pipes are provided with the air suction device, the air suction device is connected with the supporting assembly, the gas distribution bag is communicated with an air inlet pipe communicated with the air pipes, a plurality of air outlet pipes are communicated with the circumferential wall of the air inlet pipe, and the diameters of the air outlet pipes gradually increase from the air inlet pipe to the air outlet pipes far away from the air inlet pipe.

[0008] By adopting the technical scheme, the air compressor transports the compressed air to the gas storage tank, the air in the gas storage tank enters the plurality of air pipes respectively, the air suction device is arranged in the air pipes and carries away the fixed volume of air from the gas storage tank, so that the equal volume of air enters each air pipe, the air compressor transmits the equal volume of air, the air pressure in the gas storage tank is kept relatively stable, the air in each air pipe enters the gas distribution bag connected with the air pipe respectively, the air volume entering the gas distribution bag is equal, the air pressure in the plurality of gas distribution bags is the same, the air flow rate of the air outlet pipe close to the air inlet pipe is large but the diameter of the air outlet pipe is small, the air flow rate of the air outlet pipe far away from the air inlet pipe is small but the diameter of the air outlet pipe is large, so that the air in the gas distribution bag uniformly enters the blowing device and is transported to the nozzle, the air at the nozzle is stable and the air pressure is the same, and the steel plates on the plurality of rolling mills have the same blowing effect when the nozzle sprays the air to the steel plates.

[0009] Preferably, the inner wall of the gas storage tank is connected with a placing plate for placing the air suction device, the air suction device comprises a driving member connected with the placing plate, a plurality of augers arranged in the air pipes respectively, a linkage assembly for driving the plurality of augers to move simultaneously, the linkage assembly is connected with the shaft of the auger, the shaft of the auger is connected with the driving shaft of the motor, the shaft of the auger abuts against the inner wall of the air pipe, and the shaft of the auger is connected with the supporting assembly.

[0010] By adopting the technical scheme, the driving member is started to drive one auger to move, the auger drives the linkage assembly to move, the linkage assembly drives the other plurality of augers to move simultaneously, the volume of the air transported by the plurality of augers from the gas storage tank is the same, so that the same volume of air is input into the gas distribution bag, the air pressure of the plurality of gas distribution bags is the same and stable, the air pressure of the air transported to the nozzle is the same and stable, and the steel plates on the plurality of rolling mills have the same blowing effect when the nozzle sprays the air to the steel plates.

[0011] Preferably, the supporting assembly comprises a first supporting plate connected with the placing plate and a second supporting plate connected with the air pipe, and the two ends of the auger are rotatably connected with the first supporting plate and the second supporting plate respectively.

[0012] The first support plate supports one end of the auger close to the placing plate, and the second support plate supports the other end of the auger, so that the auger is driven by the driving member and transports air.

[0013] Preferably, bearings are arranged at the connection positions of the auger and the first support plate and the second support plate respectively, and the bearings are connected with the first support plate, the second support plate and the auger.

[0014] By adopting the above technical scheme, the bearings reduce the friction between the auger and the first support plate and the second support plate, and increase the service life of the auger, the first support plate and the second support plate.

[0015] Preferably, a connecting pipe in communication with the air compressor is arranged in the gas storage tank, a plurality of through holes for air passing through are formed in the connecting pipe, the plurality of through holes are arranged in sequence in the length direction of the connecting pipe, and the diameters of the plurality of through holes gradually increase from the position close to the air compressor to the position far away from the air compressor.

[0016] By adopting the above technical scheme, the air compressor transports the compressed air into the connecting pipe, the connecting pipe transports the air into the gas storage tank through the plurality of through holes, and when the air is transported in the connecting pipe, the through hole close to the air compressor releases the compressed air at a large flow rate and a small diameter, and the through hole far away from the air compressor releases the compressed air at a small flow rate and a large diameter, so that the plurality of through holes can quickly fill the gas storage tank when releasing the compressed air, and the air pressure in each part of the gas storage tank is stable.

[0017] Preferably, the gas distribution bag is connected with a return pipe in communication with the gas storage tank, the return pipe is provided with a second electromagnetic valve for controlling whether the gas distribution bag is in communication with the gas storage tank, the second electromagnetic valve is electrically connected with a control module, and the control module is electrically connected with the air compressor.

[0018] By adopting the above technical scheme, when all the rolling mills work at the same time, the driving member drives the linkage assembly to move, and the linkage assembly drives the plurality of augers to work at the same time; when part of the rolling mills work at the same time, since the part of the rolling mills do not need to blow the steel belt, the electromagnetic valve on the corresponding blowing device is closed first, and then the control module is controlled to open the second electromagnetic valve of the return pipe on the rolling mill that does not work, so that the gas in the gas distribution bag on the rolling mill that does not work is transported into the gas storage tank through the return pipe again, the second electromagnetic valve sends an electric signal to the control module when the second electromagnetic valve is opened, the control module sends an electric signal to the air compressor, the transmission efficiency of the air compressor is reduced, the volume of the air transported into the gas storage tank is the same as the volume of the air in the air pipe of the plurality of working rolling mills, and the air pressure in the gas storage tank is stable.

[0019] Preferably, the gas tank is connected with a gas pressure sensor, the probe of the gas pressure sensor extends into the gas tank, and the gas pressure sensor is electrically connected with the control module; the gas tank is connected with an exhaust pipe which is in communication with the outside world, and a first electromagnetic valve for controlling whether the gas tank is in communication with the outside world is installed on the exhaust pipe; and the first electromagnetic valve is electrically connected with the control module.

[0020] By using the above technical scheme, the gas pressure sensor measures the gas pressure in the gas tank, and when the gas pressure in the gas tank rises to a fixed value, the gas pressure sensor sends an electric signal to the control module, the control module sends an electric signal to the first electromagnetic valve, the first electromagnetic valve is opened, and then the gas tank is in communication with the outside world, so as to release the gas pressure in the gas tank; when the gas pressure in the gas tank decreases to a certain value, an electric signal is sent to the control module again, the control module sends an electric signal to the first electromagnetic valve, and the first electromagnetic valve is closed, thereby increasing the safety.

[0021] Preferably, a transition pipe with a smaller diameter than the air pipe is arranged between the air pipe and the gas distribution bag, the transition pipe is in communication with the air pipe and the air inlet pipe, and a waterproof air permeable film is connected to the inner wall of the transition pipe close to the air inlet pipe.

[0022] By using the above technical scheme, the air in the air pipe is transported to the transition pipe, and then transported to the gas distribution bag; the transition pipe with a smaller diameter facilitates the communication with the air inlet pipe, and the air in the air pipe is made to be stable before entering the air inlet pipe; after the gas enters the gas distribution bag, the temperature of the gas may decrease, so that part of the air becomes water; the waterproof air permeable film prevents water from entering the air pipe and the gas tank, thereby reducing the possibility of rusting of the auger, the motor and the bearing, and increasing the service life of the auger, the motor and the bearing.

[0023] In summary, the present application has the following advantages:

[0024] 1. The air compressor compresses air and transports the air to the gas tank, the air in the gas tank enters multiple air pipes, a driving member is started, the driving member drives one auger to rotate, the auger drives the linkage assembly to move, the linkage assembly drives other multiple augers to move at the same time, the volume of the air transported from the gas tank by the multiple augers is fixed, so the same volume of air is input into the gas distribution bag, so the gas pressures in the multiple gas distribution bags are the same, the gas flow rate in the air outlet pipe close to the air inlet pipe is large but the diameter of the air outlet pipe is small, and the gas flow rate in the air outlet pipe far away from the air inlet pipe is small but the diameter of the air outlet pipe is large, so the gas distribution bag uniformly transports the air to the nozzle, and the steel plates on multiple rolling mills have the same blowing effect when the nozzle sprays the air onto the steel plates. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a whole structure schematic diagram of the oil-free rust-free cold-rolled general carbon substrate cold-rolling gas supply device.

[0026] Figure 2 is a sectional view of the auger.

[0027] Figure 3 is an exploded schematic view of the gas tank and the connecting pipe.

[0028] Figure 4 is a sectional view of the waterproof and breathable membrane in the return pipe, which the embodiment of the application aims to display.

[0029] BRIEF DESCRIPTION OF DRAWINGS

[0030] 1, air compressor; 2, connecting pipe; 21, through hole; 3, gas tank; 31, air pressure sensor; 32, exhaust pipe; 321, first electromagnetic valve; 4, air pipe; 41, transition pipe; 5, waterproof and breathable membrane; 6, placing plate; 7, air suction device; 71, motor; 72, linkage assembly; 73, auger; 731, bearing; 8, support assembly; 81, first support plate; 82, second support plate; 9, gas distribution bag; 91, air inlet pipe; 92, air outlet pipe; 93, water outlet pipe; 94, return pipe; 941, second electromagnetic valve. DETAILED DESCRIPTION

[0031] The application will be further described in detail below with reference to the drawings.

[0032] An oil-free and rust-free cold-rolled general carbon substrate cold-rolled gas supply device, referring to Figure 1 and Figure 2 , comprises an air compressor 1, a gas tank 3, an air pipe 4, an air suction device 7 and a gas distribution bag 9, the gas tank 3 is in communication with the output end of the air compressor 1, the air pipe 4 is provided with a plurality of air pipes, and the air pipes are all in communication with the gas tank 3, the air suction device 7 is connected with the air pipe 4, and is used for uniformly taking out the air in the gas tank 3 and conveying the air into the air pipe 4, the air pipe 4 is communicated with a transition pipe 41, and the gas distribution bag 9 is in communication with the transition pipe 41 and is used for receiving the air and discharging the air into a blowing device.

[0033] Referring to Figure 1 , the gas tank 3 is fixedly connected with an air pressure sensor 31, a probe of the air pressure sensor 31 extends into the gas tank 3, the air pressure sensor 31 is electrically connected with a control module, the gas tank 3 is communicated with an exhaust pipe 32, the exhaust pipe 32 is fixedly connected with a first electromagnetic valve 321, and the first electromagnetic valve 321 is electrically connected with the control module.

[0034] The air compressor 1 transmits the air into the gas tank, and the air in the gas tank 3 is transmitted into the air pipe 4, and whether the air pressure in the gas tank is stable can be observed through the air pressure sensor 31. When the air pressure in the gas tank 3 rises to a fixed value, the air pressure sensor 31 sends an electric signal to the control module, the control module sends an electric signal to the first electromagnetic valve 321, the first electromagnetic valve 321 is opened, and then the gas tank 3 is communicated with the outside, the air pressure in the gas tank 3 is released, and the safety of the gas tank 3 is increased.

[0035] With reference to Figure 3 The gas storage tank 3 is provided with a connecting pipe 2, which is horizontally arranged, one end of which penetrates the gas storage tank 3 and is in communication with the output end of the air compressor 1, and the other end is closed and provided with a plurality of through holes 21 on the circumferential wall, the plurality of through holes 21 are arranged at equal intervals in the length direction of the connecting pipe 2, and the diameters of the plurality of through holes 21 gradually increase from the air compressor 1 to the far end of the air compressor 1.

[0036] The through hole 21 close to the air compressor has a large flow rate when releasing compressed air, but the diameter of the through hole 21 is small. The through hole 21 far from the air compressor has a small flow rate when releasing compressed air, but the diameter of the through hole 21 is large. Therefore, the plurality of through holes 21 can quickly fill the gas storage tank 3 when releasing compressed air, and keep the air pressure in each part of the gas storage tank 3 stable.

[0037] With reference to Figure 3 The inner wall of the gas storage tank 3 is fixedly connected with a placing plate 6, which is horizontally placed and connected with an air suction device 7. The air suction device 7 comprises a driving member, a linkage assembly 72 and an auger 73. In order to achieve the same purpose, the driving member can be selected from a motor 71, a hydraulic motor and the like. In the embodiment, the motor 71 is selected. The motor 71 is fixedly connected with the placing plate 6. The linkage assembly 72 is provided with a plurality of groups, which can be selected from chain and sprocket cooperation, belt and pulley cooperation and the like. In the embodiment, the belt and pulley cooperation is selected.

[0038] With reference to Figure 3 The auger 73 is provided with a plurality of groups. One auger 73 is fixedly connected with the driving shaft of the motor 71. Every adjacent two augers 73 are respectively fixedly connected with two pulleys of one linkage assembly 72. The linkage assembly 72 is located in the gas storage tank 3. The end of the auger 73 away from the linkage assembly 72 extends into the air pipe 4, and the blade of the auger 73 abuts against the inner wall of the air pipe 4.

[0039] The motor 71 is started, the motor 71 drives one auger 73 to rotate, the auger 73 drives the linkage assembly 72 to move, the linkage assembly 72 drives the other plurality of augers 73 to move at the same time, and the volume of air transported by the plurality of augers 73 from the gas storage tank 3 is the same. Therefore, the same volume of air is input into the gas distribution bag 9, so that the air pressure of the plurality of gas distribution bags 9 is the same and stable.

[0040] With reference to Figure 3The auger 73 is connected with a support assembly 8, the support assembly 8 comprises a first support plate 81 and a second support plate 82, the first support plate 81 and the second support plate 82 are arranged in parallel and vertically, the first support plate 81 is fixedly connected with the top of the placing plate 6, and a space is left between the first support plate 81 and the ventilation pipe 4, the second support plate 82 is fixedly connected with the inner wall of the ventilation pipe 4, and the two ends of the auger 73 are sleeved with bearings 731, and the bearings 731 are fixedly connected with the auger 73, and the bearings 731 are fixedly connected with the first support plate 81 and the second support plate 82.

[0041] The bearings 731 reduce the friction between the auger 73 and the first support plate 81 and the second support plate 82, and increase the service life of the auger 73, the first support plate 81 and the second support plate 82.

[0042] With reference to Figure 2 The diameter of the transition pipe 41 is smaller than that of the ventilation pipe 4, the inner wall of the transition pipe 41 is fixedly connected with the waterproof and breathable film 5, and the waterproof and breathable film 5 is close to the gas distribution bag 9.

[0043] The transition pipe 41 with a smaller diameter facilitates communication with the air inlet pipe 91, and the transition pipe 41 makes the air in the ventilation pipe 4 stable before entering the air inlet pipe 91. After the gas enters the gas distribution bag 9, it may be cooled, and part of the air may become water. The waterproof and breathable film 5 prevents water from entering the ventilation pipe 4 and the gas tank 3, reduces the possibility of rust of the auger 73, the motor 71 and the bearings 731, and increases the service life of the auger 73, the motor 71 and the bearings 731.

[0044] With reference to Figure 3 The gas distribution bag 9 is communicated with the air inlet pipe 91, the air outlet pipe 92 and the water outlet pipe 93, the air inlet pipe 91 is located at one end of the gas distribution bag 9 and communicated with the ventilation pipe 4, the air outlet pipe 92 is provided in plurality, the plurality of air outlet pipes 92 are arranged at equal intervals in the length direction of the gas distribution bag 9, and the diameters of the plurality of air outlet pipes 92 gradually increase from close to the ventilation pipe 4 to far away from the ventilation pipe 4, and the water outlet pipe 93 is located at the bottom of the gas distribution bag 9.

[0045] The air in the transition pipe 41 enters the gas distribution bag 9 from the air inlet pipe 91, the air flow rate in the air outlet pipe 92 close to the air inlet pipe 91 is large but the diameter is small, and the air flow rate in the air outlet pipe 92 far away from the air inlet pipe 91 is small but the diameter is large, so that the air in the gas distribution bag 9 is uniformly delivered to the nozzles, so that the air at the nozzles is stable and the air pressure is the same, and the steel plates on the plurality of rolling mills have the same blowing effect when the nozzles spray air to the steel plates.

[0046] With reference to Figure 3 The plurality of air outlet pipes 92 are respectively communicated with a plurality of air blowing pipes, the air blowing pipes are connected with a blowing device, the blowing device comprises a blowing pipe and a nozzle, the blowing pipe is communicated with a connecting pipe, the connecting pipe is provided with an electromagnetic valve, the electromagnetic valve is communicated with the air blowing pipe, the nozzle is provided in plurality, the plurality of nozzles are fixedly connected with the blowing pipe, and the plurality of nozzles are arranged close to the steel plate.

[0047] Referring to Figure 3 and Figure 4 The circumferential wall of the gas distribution bag 9 is communicated with a return pipe 94, which is communicated with the air tank 3, and the inner wall of the return pipe 94 is fixedly connected with the waterproof air permeable film 5, which is close to the gas distribution bag 9. The return pipe 94 is fixedly connected with the second electromagnetic valve 941, which is electrically connected with the control module, and the control module is electrically connected with the air compressor 1.

[0048] When part of the rolling mills are working, the electromagnetic valves on the corresponding blowing devices are closed first, and then the second electromagnetic valve 941 of the return pipe 94 of the non-working rolling mill is opened by the control module, so that the non-working gas distribution bag 9 transports air to the air tank 3 through the return pipe 94. At the same time that the second electromagnetic valve 941 is opened, an electrical signal is generated to the control module, and the control module sends an electrical signal to the air compressor 1 to reduce the transmission rate of air, so that the air pressure in the air tank 3 is stable.

[0049] The use principle of the present application is as follows: when all the rolling mills are working, the air compressor 1 compresses and transmits air to the connecting pipe 2, and then releases it into the air tank 3 through the plurality of through holes 21. The motor 71 is started, the motor 71 drives the linkage assembly 72 to move, the linkage assembly 72 drives the plurality of augers 73 to rotate simultaneously, the augers 73 transport air in the air tank 3 into the air pipes 4 respectively, and the volume of air transported by the augers 73 is the same, the air pressure in the plurality of air pipes 4 is the same, the air in the air pipes 4 is transmitted into the transition pipe 41, and then into the gas distribution bag 9 through the air inlet pipe 91. The gas distribution bag 9 uniformly transports air to the nozzles, and the nozzles spray air onto the steel plates, so that the blowing effect on the steel plates of the plurality of rolling mills is the same.

[0050] When part of the rolling mills are working, the plurality of augers 73 rotate simultaneously and transport air to the gas distribution bag 9. The electromagnetic valves on the blowing devices are closed first, and then the second electromagnetic valve 941 is opened, so that the gas in the gas distribution bag 9 returns to the air tank 3. At the same time that the second electromagnetic valve 941 is opened, an electrical signal is sent to the control module, and then the control module sends an electrical signal to the air compressor 1. The transmission rate of the air compressor 1 is reduced, so that the volume of air entering the plurality of air pipes 4 is equal to the volume of air transmitted by the air compressor 1 into the air tank 3, and the air pressure in the air tank 3 is always stable.

[0051] The embodiments of the specific embodiment are the preferred embodiments of the present application, but do not limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A cold-rolling air supply device for oil-free and rust-free cold-rolled plain carbon fiber substrate, comprising an air compressor (1), an air storage tank (3) connected to the air compressor (1), a plurality of air pipes (4) connected to the air storage tank (3), and an air distribution manifold (9) connected to the air pipes (4), characterized in that: The ventilation pipe (4) is equipped with an air intake device (7) for uniformly transporting air. The air distribution bag (9) is connected to an air inlet pipe (91) that is connected to the ventilation pipe (4). Multiple air outlet pipes (92) are connected to the circumferential wall of the air distribution bag (9). The diameter of the multiple air outlet pipes (92) increases sequentially from the side closest to the air inlet pipe (91) to the side furthest from the air inlet pipe (91). The device also includes a support assembly (8) for supporting the air intake device (7). The inner wall of the gas storage tank (3) is connected to a placement plate (6) for placing the air intake device (7). The air intake device (7) includes a drive unit connected to the placement plate (6), augers (73) respectively disposed in multiple air vents (4), and a linkage component (72) for driving the multiple augers (73) to move together. The linkage component (72) is connected to the shaft of the auger (73), the shaft of the auger (73) is connected to the drive shaft of the drive unit, the blades of the auger (73) abut against the inner wall of the air vent (4), and the auger (73) is connected to the support component (8). The air tank (3) is provided with a connecting pipe (2) that communicates with the air compressor (1). The connecting pipe (2) has multiple through holes (21) for air to pass through. The multiple through holes (21) are arranged sequentially along the length of the connecting pipe (2), and their diameters increase sequentially from the direction closer to the air compressor (1) to the direction farther away from the air compressor (1). The air distributor (9) is connected to a return pipe (94) that communicates with the air storage tank (3). The return pipe (94) is equipped with a second solenoid valve (941) that controls whether the air distributor (9) and the air storage tank (3) are connected. The second solenoid valve (941) is electrically connected to a control module, and the control module is electrically connected to the air compressor (1). A transition pipe (41) with a diameter smaller than that of the vent pipe (4) is provided between the vent pipe (4) and the air distribution bag (9). The transition pipe (41) is connected to both the vent pipe (4) and the air inlet pipe (91). A waterproof and breathable membrane (5) is connected to the inner wall of the transition pipe (41) near the air inlet pipe (91).

2. The cold-rolling gas supply device for oil-free, rust-free cold-rolled carbon fiber substrate according to claim 1, characterized in that: The support assembly (8) includes a first support plate (81) connected to the placement plate (6) and a second support plate (82) connected to the vent pipe (4). The two ends of the auger (73) are rotatably connected to the first support plate (81) and the second support plate (82) respectively.

3. The cold-rolling gas supply device for oil-free, rust-free cold-rolled carbon fiber substrate according to claim 2, characterized in that: Bearings (731) are respectively provided at the connection between the auger (73) and the first support plate (81) and the second support plate (82).

4. The cold-rolling gas supply device for oil-free, rust-free cold-rolled carbon fiber substrate according to claim 1, characterized in that: The gas storage tank (3) is connected to a pressure sensor (31). The probe of the pressure sensor (31) extends into the gas storage tank (3) and is electrically connected to the control module. The gas storage tank (3) is connected to an exhaust pipe (32) that communicates with the outside world. A first solenoid valve (321) is installed on the exhaust pipe (32) to control whether the gas storage tank (3) is connected to the outside world. The first solenoid valve (321) is electrically connected to the control module.

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