Airflow dryer capable of recycling waste gas

Abstract

The present invention relates to the technical field of airflow dryer production process equipment, and in particular to an airflow dryer with recyclable waste gas, which solves the problem that the existing bag dust collector in the prior art needs to be frequently cleaned to ensure a good dust removal effect, and the bag dust collector in the drying process is connected to a variety of equipment. If it is disassembled separately for cleaning, it is time-consuming and labor-intensive, delays production time, and thus leads to reduced production efficiency, which is a relatively troublesome problem. An airflow dryer with recyclable waste gas includes a bag dust collector, a bag, an exhaust pipe and a connecting pipe, and the bag is installed in the inner cavity of the bag dust collector. The present invention does not need to be completely disassembled, and can be quickly dried after cleaning, thereby increasing the drying speed after cleaning, effectively improving the cleaning efficiency, and allowing the cleaned bag dust collector to quickly participate in production, thereby improving production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of pneumatic dryer production process equipment, and in particular to a pneumatic dryer with waste gas that can be recycled. Background Art

[0002] Airflow drying technology was developed during the rapid development of industrialization in the early last century. The airflow dryer is a rapid drying equipment developed to meet the needs of the drying process.

[0003] However, the traditional air flow dryer has a short drying time, high energy consumption, large air flow volume during the drying process, and a large amount of exhaust gas discharged. The exhaust gas contains dust particles, causing the air particle size to exceed the standard, especially for drying materials containing irritating organic solvents. The solvents discharged into the atmosphere cause air pollution. Therefore, it is necessary to develop an air flow dryer without exhaust gas emissions. However, to achieve zero exhaust gas emissions, it is necessary to collect the dust in the internal circulating gas through a gas dust removal device. Therefore, the recycling of waste gas requires the collection of waste dust in the circulating gas through a bag dust collector to ensure the quality of the gas, thereby ensuring the drying quality of the material. However, the existing bag dust collector needs to be cleaned frequently to ensure a good dust removal effect. The bag dust collector in the drying process is connected to a variety of equipment. If it is disassembled separately for cleaning, it is time-consuming and labor-intensive, delaying production time, thereby reducing production efficiency and being more troublesome. Summary of the invention

[0004] The purpose of the present invention is to provide an air flow dryer that can recycle waste gas, which solves the problem in the prior art that the waste gas recycling needs to collect the waste dust in the circulating gas through a bag dust collector to ensure the quality of the gas, thereby ensuring the drying quality of the material. However, the existing bag dust collector needs to be cleaned frequently to ensure a good dust removal effect. The bag dust collector in the drying process is connected to a variety of equipment. If it is disassembled separately for cleaning, it is time-consuming and labor-intensive, delaying production time, thereby reducing production efficiency and being a relatively troublesome problem.

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

[0006] An air flow dryer with recyclable waste gas includes a cyclone separator, a bag dust collector, an exhaust fan and a low-temperature water removal device. The bag dust collector also includes a bag, an exhaust pipe and a connecting pipe. The bag is installed in the inner cavity of the bag dust collector. The exhaust pipe is vertically arranged at the top center of the bag dust collector, and one end of the extension section passes through the top of the bag dust collector and is connected to the bag. The connecting pipe is arranged at the bottom of the bag dust collector, and one end of the extension section passes through the bottom of the bag dust collector and is connected to the bag. Support legs are fixedly connected to the four corners of the bottom of the bag dust collector. A cleaning mechanism is arranged at the bottom of the connecting pipe. The cleaning mechanism includes a movable base, a driving unit, a ventilation bin and a spray bin. The driving unit includes a water collecting bin, a cylinder and an electric telescopic rod. The electric telescopic rod is installed at the bottom of the inner cavity of the water collecting bin. The cylinder is installed on the top side of the movable base. The output end of the cylinder is connected to the bottom center of the water collecting bin. The ventilation bin is arranged at the top center of the output end of the electric telescopic rod. The bottom of the spray bin is connected to the top of the ventilation bin through a number of columns. A circular plate detachably connected to a connecting pipe is sleeved on one side of the outer ring of the water collecting bin. A drain pipe is connected to one side of the bottom of the water collecting bin.

[0007] Preferably, movable wheels are installed at the four corners of the bottom of the movable base, a push handle is fixedly connected to one side of the top of the movable base, and the electric telescopic rod is connected to the bottom of the inner cavity of the water collecting bin through a waterproof base.

[0008] Preferably, the diameter of the water collecting bin is smaller than the diameter of the connecting pipe, the diameter of the circular plate is larger than the diameter of the water collecting bin, and a sealing gasket matching the circular plate is fixedly connected to the top of the circular plate.

[0009] Preferably, the diameter of the spray bin is smaller than the diameter of the water collecting bin, and a water distribution pipe is fixedly connected to the center of the inner cavity of the spray bin, and a plurality of water outlet pipes are horizontally arranged on the outer circle of the water distribution pipe and along the circumferential direction of the water distribution pipe. One end of each of the water outlet pipes passes through the spray bin, and the other end passes through the water distribution pipe and is connected to the inner cavity of the water distribution pipe. The top center of the water distribution pipe is connected to a docking pipe passing through the top of the spray bin, and the end of the docking pipe away from the spray bin is connected to a connecting hose passing through the water collecting bin.

[0010] Preferably, a booster nozzle is installed at one end of each of the water outlet pipes away from the water distribution pipe, and a booster water pump connected to the mobile base is connected to one end of the connecting hose away from the docking pipe.

[0011] Preferably, an air supply pipe is fixedly connected to the center of the inner cavity of the ventilation bin, and a plurality of air outlet pipes are horizontally arranged on the outer circle of the air supply pipe along the circumferential direction of the air supply pipe, one end of each of the air outlet pipes passes through the ventilation bin, and the other end passes through one side of the air supply pipe and is connected to the inner cavity of the air supply pipe, a through pipe passing through the top of the air supply pipe is connected to the center of the top of the air supply pipe, and an end of the through pipe away from the air supply pipe is connected to a connecting hose passing through the water collection bin.

[0012] Preferably, one end of the connecting hose away from the through pipe is connected to a fan connected to the movable base.

[0013] Preferably, a plurality of drain pipes are vertically arranged at the bottom of the water collecting bin along the circumferential direction of the water collecting bin, one end of each of the drain pipes is fixedly connected to the water collecting bin, and the other end of each of the drain pipes is slidably connected to a sleeve fixedly connected to the movable base.

[0014] Preferably, the bottom of the cyclone separator is connected to a discharge pipe, the top of the cyclone separator is provided with a gas connecting pipe connected to the inner cavity of the cyclone separator, the end of the gas connecting pipe away from the cyclone separator is connected to the connecting pipe of the bag dust collector, the input end of the exhaust fan is connected to an air duct, the end of the exhaust pipe away from the exhaust fan passes through the bag dust collector and is connected to the bag, the output end of the exhaust fan is connected to the input end of the low-temperature water removal equipment through the air duct, and the output end of the low-temperature water removal equipment is connected to a gas circulation connecting pipe.

[0015] The present invention has at least the following beneficial effects:

[0016] When the cloth bag needs to be cleaned, open the connecting pipe, move the cleaning mechanism to the bottom position of the connecting pipe through the mobile base, and then start the cylinder. The output end of the cylinder drives the water collecting bin from the channel of the connecting pipe into the cloth bag, and connects the circular plate to the bottom end of the connecting pipe. The circular plate and the connecting pipe are bolted and connected by the bolt rod, so as to fix the position of the water collecting bin, and then the connection is sealed. Then open the electric telescopic rod, and the output end of the electric telescopic rod drives the spraying bin and the ventilation bin to move up and down in the cloth bag. At this time, the cloth bag is sprayed and washed through the spraying bin. After spraying and washing, the cloth bag is blown through the ventilation bin to accelerate the drying speed of the cloth bag. The waste water from the spraying and washing is discharged through the drain pipe of the water collecting bin, and the drain pipe can be connected to the wastewater collection equipment for collection, so as to complete the entire cleaning process. It is only necessary to remove the equipment connector at the connecting pipe position to perform the cleaning operation without completely disassembling it. After cleaning, it can be dried quickly, which improves the drying speed after cleaning, effectively improves the cleaning efficiency, and enables the cleaned bag dust collector to quickly participate in production, thereby improving production efficiency.

[0017] The present invention also has the following beneficial effects:

[0018] 1. Through the arrangement of the water distribution pipe, the water outlet pipe, the butt joint pipe, the booster water pump, the air supply pipe, the air outlet pipe, the through pipe, the fan and the connecting hose, the input end of the booster water pump is connected to the water source to quickly output the water source through the connecting hose to the water distribution pipe. The water distribution pipe sprays water to the cloth bags through each water outlet pipe and the booster nozzle to clean the cloth bags. The waste water after cleaning is discharged through the drain pipe of the water collection bin. After cleaning, the fan is turned on, and the wind of the fan is input to the air supply pipe through the connecting hose, and then blown out to the cloth bags through the air outlet pipe, so as to speed up the drying speed of the cloth bags. The structure is reasonable, convenient for spraying and drying, and effectively improves the cleaning efficiency. The arrangement of the booster water pump and the fan realizes sustainable cleaning.

[0019] 2. After the material is dried, it enters the cyclone separator to separate the gas and solid. The material is discharged from the cyclone separator through the discharge pipe, and the gas is discharged into the bag dust collector through the gas connecting pipe. The fine dust in the exhaust gas is filtered through the bags in the bag dust collector with high mesh number. Then the exhaust fan transports the filtered gas to the low-temperature dehydration equipment through the air duct. The high-humidity gas is treated in the low-temperature dehydration equipment to remove water vapor. Finally, it is connected to the dryer through the gas circulation connecting pipe to realize gas recycling and achieve a closed cycle of the entire drying process, thereby avoiding gas emissions. The entire drying system has no exhaust gas pollution, the system is closed and circulated, and there is no dust particle emission, so it meets the national environmental protection emission requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the mobile base of the present invention;

[0023] Figure 3 This is a schematic diagram of the cloth bag structure of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the spray-washing bin of the present invention;

[0025] Figure 5 This is a schematic diagram of the ventilation chamber structure of the present invention;

[0026] Figure 6 It is a schematic diagram of the structure of the driving part of the present invention;

[0027] Figure 7It is a schematic diagram of the structure of the cyclone separator of the present invention;

[0028] Figure 8 It is a schematic diagram of the structure of the exhaust fan of the present invention.

[0029] In the figure: 1. Bag dust collector; 2. Cleaning mechanism; 3. Mobile base; 4. Push handle; 5. Driving unit; 6. Ventilation chamber; 7. Spray chamber; 8. Connecting hose; 9. Support leg; 10. Connecting pipe; 11. Bag; 13. Exhaust pipe; 14. Discharge pipe; 15. Gas circulation connecting pipe; 16. Low-temperature water removal equipment; 17. Cyclone separator; 18. Gas connecting pipe; 19. Exhaust fan; 20. Air duct; 501. Cylinder; 502. Sleeve; 503. Connecting column; 504. Drain pipe; 505. Round plate; 506. Water collection chamber; 507. Electric telescopic rod; 601. Air supply pipe; 602. Air outlet pipe; 603. Through pipe; 701. Pressurized nozzle; 702. Water outlet pipe; 703. Butt-joint pipe; 704. Water distribution pipe; 705. Column. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0031] Embodiment 1

[0032] Reference Figure 1-8, an air flow dryer with recyclable waste gas, comprising a cyclone separator 17, a bag dust collector 1, an exhaust fan 19 and a low-temperature water removal device 16, the bag dust collector 1 also comprises a bag 11, an exhaust pipe 13 and a connecting pipe 10, the bag 11 is installed in the inner cavity of the bag dust collector 1, the exhaust pipe 13 is vertically arranged at the top center of the bag dust collector 1 and one end of the extension section passes through the top of the bag dust collector 1 and is connected to the bag 11, the connecting pipe 10 is arranged at the bottom of the bag dust collector 1 and one end of the extension section passes through the bottom of the bag dust collector 1 and is connected to the bag 11, the four corners of the bottom of the bag dust collector 1 are fixedly connected with support legs 9, a cleaning mechanism 2 is arranged at the bottom of the connecting pipe 10, the cleaning mechanism 2 comprises a movable base 3, a driving unit 5, a ventilation bin 6 and a spraying bin 7, the driving unit 5 comprises a water collecting bin 506, a cylinder 501 and an electric telescopic rod 507, the electric telescopic rod 507 is installed at the collecting bin At the bottom of the inner cavity of the water tank 506, the cylinder 501 is installed on the top side of the mobile base 3, and the output end of the cylinder 501 is connected to the bottom center of the water collecting tank 506. The ventilation tank 6 is arranged at the top center of the output end of the electric telescopic rod 507. The bottom of the spray tank 7 is connected to the top of the ventilation tank 6 through a number of columns 705. A circular plate 505 detachably connected to the connecting pipe 10 is sleeved on one side of the outer ring of the water collecting tank 506. A drainage pipe 504 is connected to one side of the bottom of the water collecting tank 506. Moving wheels are installed at the four corners of the bottom of the mobile base 3. A push handle 4 is fixedly connected to the top side of the mobile base 3. The electric telescopic rod 507 is connected to the bottom of the inner cavity of the water collecting tank 506 through a waterproof base. The diameter of the water collecting tank 506 is smaller than the diameter of the connecting pipe 10, and the diameter of the circular plate 505 is larger than the diameter of the water collecting tank 506. A sealing gasket matching the circular plate 505 is fixedly connected to the top of the circular plate 505.

[0033] It can be known from the above embodiments that: when the cloth bag 11 needs to be cleaned, the connecting pipe 10 is opened, and the cleaning mechanism 2 is moved to the bottom position of the connecting pipe 10 through the movable base 3, and then the cylinder 501 is started, and the output end of the cylinder 501 drives the water collection bin 506 from the channel of the connecting pipe 10 into the cloth bag 11, until the circular plate 505 is connected to the bottom end of the connecting pipe 10, and the circular plate 505 is bolted to the connecting pipe 10 by the bolt rod, so as to fix the position of the water collection bin 506, and then the connection is sealed, and then the electric telescopic rod 507 is opened, and the output end of the electric telescopic rod 507 drives the spraying bin 7 and the ventilation bin 6 in the cloth bag 11 moves up and down, at this time, the cloth bag 11 is sprayed and washed through the spray chamber 7, and after spraying and washing, the cloth bag 11 is blown with air through the ventilation chamber 6 to accelerate the drying speed of the cloth bag 11, and the waste water from the spraying and washing is discharged through the drain pipe 504 of the water collecting chamber 506. The drain pipe 504 can be connected to the wastewater collecting equipment for collection, and the whole cleaning process can be completed. It is only necessary to remove the equipment connector at the position of the connecting pipe 10 to carry out the cleaning operation without completely disassembling it, and it can be dried quickly after cleaning, which improves the drying speed after cleaning, effectively improves the cleaning efficiency, and enables the bag dust collector 1 to quickly participate in production after cleaning, thereby improving production efficiency.

[0034] Embodiment 2

[0035] Reference Figure 1-8The diameter of the spray tank 7 is smaller than the diameter of the water collecting tank 506. A water distribution pipe 704 is fixedly connected to the center of the inner cavity of the spray tank 7. A plurality of water outlet pipes 702 are horizontally arranged on the outer circle of the water distribution pipe 704 and along the circumferential direction of the water distribution pipe 704. One end of each water outlet pipe 702 passes through the spray tank 7, and the other end passes through the water distribution pipe 704 and is connected to the inner cavity of the water distribution pipe 704. The top center of the water distribution pipe 704 is connected with a docking pipe 703 passing through the top of the spray tank 7. The end of the docking pipe 703 away from the spray tank 7 is connected with a connecting hose 8 passing through the water collecting tank 506. Each water outlet pipe 702 is away from the water distribution pipe 704. A booster nozzle 701 is installed at one end, and the end of the connecting hose 8 away from the docking pipe 703 is connected to a booster water pump connected to the mobile base 3. The center of the inner cavity of the ventilation bin 6 is fixedly connected to an air supply pipe 601, and the outer circle of the air supply pipe 601 is horizontally provided with a plurality of air outlet pipes 602 along the circumferential direction of the air supply pipe 601. One end of each air outlet pipe 602 penetrates the ventilation bin 6, and the other end penetrates one side of the air supply pipe 601 and is connected to the inner cavity of the air supply pipe 601. The top center of the air supply pipe 601 is connected to a through pipe 603 that penetrates the top of the air supply pipe 601, and the end of the through pipe 603 away from the air supply pipe 601 is connected to a through pipe The connecting hose 8 of the water collecting bin 506, one end of the connecting hose 8 away from the through pipe 603 is connected to the fan connected to the mobile base 3, and a plurality of connecting columns 503 are vertically arranged at the bottom of the water collecting bin 506 along the circumferential direction of the water collecting bin 506, one end of each connecting column 503 is fixedly connected to the water collecting bin 506, and the other end of each connecting column 503 is slidably connected to a sleeve 502 fixedly connected to the mobile base 3, through the arrangement of the water distribution pipe 704, the water outlet pipe 702, the butt joint pipe 703, the booster water pump, the air supply pipe 601, the air outlet pipe 602, the through pipe 603, the fan and the connecting hose 8, the input end of the booster water pump By connecting the water source, the water source can be quickly output to the water distribution pipe 704 through the connecting hose 8. The water distribution pipe 704 sprays the water to the cloth bag 11 through each water outlet pipe 702 and the boost nozzle 701 to clean the cloth bag 11. The waste water after cleaning is discharged through the drain pipe 504 of the water collection bin 506. After cleaning, the fan is turned on, and the wind of the fan is input to the air supply pipe 601 through the connecting hose 8, and then blown to the cloth bag 11 through the air outlet pipe 602, so as to speed up the drying speed of the cloth bag 11. The structure is reasonable, which is convenient for spraying and drying, and effectively improves the cleaning efficiency. The setting of the boost water pump and the fan realizes sustainable cleaning.

[0036] Embodiment 3

[0037] Reference Figure 1-8The bottom of the cyclone separator 17 is connected with a discharge pipe 14, and the top of the cyclone separator 17 is provided with a gas connecting pipe 18 connected with the inner cavity of the cyclone separator 17. The end of the gas connecting pipe 18 away from the cyclone separator 17 is connected with the connecting pipe 10 of the bag dust collector 1. The input end of the exhaust fan 19 is connected with an air duct 20. The end of the air duct (20) away from the exhaust fan 19 passes through the bag dust collector 1 and is connected with the bag 11. The output end of the exhaust fan 19 is connected with the input end of the low-temperature dehydration device 16 through the air duct 20. The output end of the low-temperature dehydration device 16 is connected with a gas circulation connecting pipe 15. When the material is dried, it enters the cyclone separator 17 to achieve the purpose of gas-solid separation. The material is discharged from the cyclone separator 17 through the discharge pipe 14, and the gas is discharged into the bag dust collector 1 through the gas connecting pipe 18. The fine dust in the exhaust gas is filtered with high mesh number through the bag 11 in the bag dust collector 1. Then the exhaust fan 19 conveys the filtered gas to the low-temperature dehydration equipment 16 through the air duct 20. The high-humidity gas is processed in the low-temperature dehydration equipment 16 to remove water vapor. Finally, it is connected to the dryer through the gas circulation connecting pipe 15 to realize gas recycling and achieve a closed cycle of the entire drying process, thereby avoiding gas emissions. The entire drying system has no exhaust gas pollution, the system is closed and circulated, and there is no dust particle emission, so it meets the national environmental protection emission requirements.

[0038] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. An air flow dryer for recycling waste gas, comprising a cyclone separator (17), a bag dust collector (1), an exhaust fan (19) and a low-temperature water removal device (16), the bag dust collector (1) further comprising a bag (11), an exhaust pipe (13) and a connecting pipe (10), the bag (11) being installed in the inner cavity of the bag dust collector (1), the exhaust pipe (13) being vertically arranged at the top center of the bag dust collector (1) and one end of the extension section passing through the top of the bag dust collector (1) and communicating with the bag (11), the connecting pipe (10) being arranged at the bottom of the bag dust collector (1) and one end of the extension section passing through the bottom of the bag dust collector (1) and communicating with the bag (11), characterized in that: The bag dust collector (1) is fixedly connected to supporting legs (9) at the four corners of the bottom. A cleaning mechanism (2) is arranged at the bottom of the connecting pipe (10). The cleaning mechanism (2) comprises a movable base (3), a driving unit (5), a ventilation chamber (6) and a spray chamber (7). The driving unit (5) comprises a water collecting chamber (506), a cylinder (501) and an electric telescopic rod (507). The electric telescopic rod (507) is installed at the bottom of the inner cavity of the water collecting chamber (506). The cylinder (501) is installed on one side of the top of the movable base (3). The output end of the cylinder (501) is connected to the bottom center of the water collecting chamber (506). The ventilation chamber (6) is arranged at the output end of the electric telescopic rod (507). At the top center of the outlet, the bottom of the spray chamber (7) is connected to the top of the ventilation chamber (6) through a plurality of columns (705); a circular plate (505) detachably connected to the connecting pipe (10) is sleeved on one side of the outer ring of the water collecting chamber (506); a drainage pipe (504) is connected to one side of the bottom of the water collecting chamber (506); moving wheels are installed at the four corners of the bottom of the mobile base (3); a push handle (4) is fixedly connected to one side of the top of the mobile base (3); the electric telescopic rod (507) is connected to the bottom of the inner cavity of the water collecting chamber (506) through a waterproof base; the diameter of the water collecting chamber (506) is smaller than the diameter of the connecting pipe (10), and the diameter of the circular plate (505) is larger than the diameter of the water collecting chamber (506). 6), a sealing gasket matched with the circular plate (505) is fixedly connected to the top of the circular plate (505), the diameter of the spray chamber (7) is smaller than the diameter of the water collecting chamber (506), a water distribution pipe (704) is fixedly connected to the center of the inner cavity of the spray chamber (7), a plurality of water outlet pipes (702) are horizontally arranged on the outer circle of the water distribution pipe (704) and along the circumferential direction of the water distribution pipe (704), one end of each of the water outlet pipes (702) passes through the spray chamber (7), and the other end passes through the water distribution pipe (704) and is connected to the inner cavity of the water distribution pipe (704), and the top center of the water distribution pipe (704) is connected to a butt joint pipe (703) that passes through the top of the spray chamber (7), and the butt joint pipe (703) is far away One end away from the spraying and washing bin (7) is connected to a connecting hose (8) penetrating the water collecting bin (506); one end of each of the water outlet pipes (702) away from the water distribution pipe (704) is installed with a booster nozzle (701); one end of the connecting hose (8) away from the docking pipe (703) is connected to a booster water pump connected to the mobile base (3); an air supply pipe (601) is fixedly connected to the center of the inner cavity of the ventilation bin (6); a plurality of air outlet pipes (602) are horizontally arranged on the outer ring of the air supply pipe (601) along the circumferential direction of the air supply pipe (601); one end of each of the air outlet pipes (602) penetrates the ventilation bin (6), and the other end penetrates one side of the air supply pipe (601) and is connected to the inner cavity of the air supply pipe (601);The top center of the air supply pipe (601) is connected to a through pipe (603) that passes through the top of the air supply pipe (601); one end of the through pipe (603) away from the air supply pipe (601) is connected to a connecting hose (8) that passes through the water collection bin (506); and one end of the connecting hose (8) away from the through pipe (603) is connected to a fan connected to the mobile base (3).

2. The airflow dryer with waste gas recycling according to claim 1, characterized in that: A plurality of connecting columns (503) are vertically arranged at the bottom of the water collecting bin (506) along the circumferential direction of the water collecting bin (506), one end of each of the connecting columns (503) is fixedly connected to the water collecting bin (506), and the other end of each of the connecting columns (503) is slidably connected to a sleeve (502) fixedly connected to the movable base (3).

3. The airflow dryer with waste gas recycling according to claim 1, characterized in that: The bottom of the cyclone separator (17) is connected to a discharge pipe (14); the top of the cyclone separator (17) is provided with a gas communication pipe (18) connected to the inner cavity of the cyclone separator (17); one end of the gas communication pipe (18) away from the cyclone separator (17) is connected to the connecting pipe (10) of the bag dust collector (1); the input end of the exhaust fan (19) is connected to an air duct (20); one end of the air duct (20) away from the exhaust fan (19) passes through the bag dust collector (1) and is connected to the bag (11); the output end of the exhaust fan (19) is connected to the input end of the low-temperature water removal device (16) through the air duct (20); and the output end of the low-temperature water removal device (16) is connected to the gas circulation connecting pipe (15).

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