Air return device of rotor spinning machine

Abstract

The utility model belongs to the technical field of air return devices, and relates to an air return device of an air spinning machine, which comprises a base, an air spinning machine and a box body are fixedly mounted at the top of the base, an air inlet of the air spinning machine is communicated with an air outlet of the box body through an air return pipe, and an air outlet of the air spinning machine is communicated with an air inlet of the box body through a ventilation pipe. A filter screen is fixedly connected to the interior of the box body, two groups of spraying pipes are fixedly arranged at the top in the box body, the filter screen is located between the two groups of spraying pipes, a brush plate is slidably arranged on one side of the filter screen, a lifting assembly is arranged in the box body, and the lifting assembly drives the brush plate to vertically slide up and down on one side of the filter screen. The air filter has the advantages that air entering the box body can be filtered through the filter screen, impurities are blocked on one side of the filter screen, the motor is started to enable the lead screw to rotate, the brush plate slides up and down on one side of the filter screen along the guide rod, and the brush plate scrubs the impurities on the filter screen in cooperation with the water spraying pipe, so that the washing effect on the filter screen is better.

Description

Technical Field

[0001] The utility model belongs to the technical field of return air devices and relates to an air return device for an air-jet spinning machine. Background Art

[0002] Air-spinning machines are a common type of textile machine that primarily utilizes air-spinning technology, using high-speed airflow to twist slivers into yarn for subsequent textile processing. Air-spinning machines are often equipped with a return air device, which returns the exhausted air to the machine for continued use.

[0003] Chinese patent CN214032797U discloses an air return device for an air spinning machine with a dust-proof function. A water pump is fixedly installed in the middle of the top surface of the outer wall of the box. The water pump and the water tank are connected by a pipe. A vertical filter is fixedly installed in the middle of the inner wall of the box. Two electric telescopic rods are fixedly installed on the top surface of the inner wall of the box. The two electric telescopic rods are respectively located on the left and right sides of the filter. The lower ends of the two electric telescopic rods are respectively fixedly connected to the top surface of the mounting plate. The inner ends of the two mounting plates are respectively fixedly installed with nozzles. The water inlets of the two nozzles are respectively fixedly connected to the water outlet of the water pump through hoses.

[0004] When the air return device is in use, the controller controls the water pump to start pumping water from the water tank and send it into the nozzle. At the same time, the two electric telescopic rods extend under the control of the controller, driving the corresponding mounting plates downward. The downward movement of the two mounting plates drives the two nozzles downward, and the water sprayed from the two nozzles cleans the filter. However, impurities may stick to the filter mesh during rinsing, making it difficult to directly rinse away the impurities on the mesh, resulting in poor rinsing effect.

[0005] A return air device for an air-jet spinning machine disclosed in Chinese patent CN210856465U includes a spinning machine, which includes a head and a tail. The head and the tail are connected to a plurality of return air ducts on one side thereof, the return air ducts on the left and right sides are connected to vertical pipes at one end thereof, the upper ends of the vertical pipes on the left and right sides are connected to horizontal pipes, and the left and right horizontal pipes are respectively provided with a left mounting seat and a right mounting seat on one side thereof, a ground return air box and a machine return air device box are respectively installed on the left mounting seat and the right mounting seat, the horizontal pipes on the left and right sides are respectively connected to the ground return air box and the machine return air device box at one end thereof, and a heat dissipation device is installed on the bottom of the end surface on the opposite side of the left mounting seat and the right mounting seat.

[0006] When the return air device is in use, the head exhaust duct directs air through the return air duct into the ground return air box, and the tail exhaust duct directs air through the return air duct into the machine return air device box. When the air spinning machine is in use, the airflow passing through the yarn will be mixed with impurities such as dust in the air and flying catkins during the twisting process. The impurities in the return airflow can easily affect the quality of the yarn.

[0007] In order to solve the above problems, the utility model proposes an air return device for an air spinning machine. Utility Model Content

[0008] In order to solve the problems existing in the background technology, the utility model proposes an air return device for an air spinning machine.

[0009] In order to achieve the above-mentioned object, the technical solution adopted by the present invention is as follows: comprising a base, on the top of which an air spinning machine and a box are fixedly mounted, the air inlet of the air spinning machine is connected to the air outlet of the box through a return air duct, and the air outlet of the air spinning machine is connected to the air inlet of the box through a ventilation pipe;

[0010] The inside of the box is fixedly connected to a filter, and two groups of spray pipes are fixedly set on the top of the box. The filter is located between the two groups of spray pipes. A brush plate is slidably set on one side of the filter. A lifting assembly is set inside the box, and the lifting assembly drives the brush plate to slide vertically up and down on one side of the filter.

[0011] Furthermore, the ventilation duct includes a first air inlet duct and a second air inlet duct, a fan is fixedly connected to the top of the base, one end of the second air inlet duct is fixedly connected to the air inlet of the fan, and the other end of the second air inlet duct is fixedly connected to the air outlet of the air spinning machine, one end of the first air inlet duct is fixedly connected to the air outlet of the fan, and the other end of the first air inlet duct is fixedly connected to the air inlet of the box.

[0012] Furthermore, a dryer is fixedly connected to the middle of the top surface of the box body, a through hole is opened on the top surface of the box body, and the air outlet of the dryer corresponds to the through hole in upper and lower directions.

[0013] Furthermore, a water tank is fixedly connected to the top of the box body, a water pump is fixedly connected to the inside of the water tank, an output end of the water pump is fixedly connected to a water outlet pipe, and the water outlet pipe is arranged horizontally;

[0014] The spray pipe includes a plurality of water spray pipes, which are arranged vertically. The tops of the plurality of water spray pipes are fixedly passed through the top surface of the box body and the bottom surface of the water tank. The tops of the plurality of water spray pipes are fixedly connected to the water outlet pipe at intervals.

[0015] The bottom end of each water spray pipe is fixedly connected with a spray head, and the nozzle of the spray head faces the filter screen.

[0016] Furthermore, a drainage pipe is fixedly connected to the bottom of one side of the box body.

[0017] Furthermore, the lifting assembly includes a screw rod, which is arranged vertically, the bottom end of the screw rod is rotatably connected to the bottom surface of the box body, the top end of the screw rod is rotatably connected to the top surface of the box body, and the brush plate is threadedly sleeved on the screw rod;

[0018] The top of the box is fixedly connected to a motor, and the top end of the screw is fixedly connected to the output end of the motor;

[0019] A limiting component is provided inside the box body, and the limiting component limits the brush plate to slide up and down.

[0020] Furthermore, the limiting assembly includes a guide rod, the guide rod is fixedly connected to the inside of the box, the guide rod is parallel to the screw rod, and the brush plate is slidably sleeved on the guide rod;

[0021] Limiting grooves are provided on the inner walls of the two corresponding side surfaces of the box body, and the two ends of the brush plate are respectively slidably connected to the corresponding limiting grooves.

[0022] Furthermore, the lifting assembly includes a fan, which is composed of a motor and fan blades. A support rod is fixedly connected to the interior of one end of the first air inlet pipe close to the box body. The fan motor is fixedly connected to one side of the support rod, and the fan blades are fixedly connected to the output shaft of the motor. One end of the output shaft of the motor extends into the box body.

[0023] The end of the output shaft of the motor is coaxially fixedly connected to a rotating ring, and one side of the rotating ring is eccentrically fixedly connected to a clamping rod;

[0024] A connecting plate is fixedly connected to the middle of one side of the brush plate, one end of the connecting plate is fixedly connected to the slot plate, and the card rod is slidably connected to the inside of the slot plate;

[0025] Limiting grooves are provided on the inner walls of the two corresponding side surfaces of the box body, and the two ends of the brush plate are respectively slidably connected to the corresponding limiting grooves.

[0026] Furthermore, a plurality of protrusions are evenly and fixedly connected to the side of the filter screen that contacts the brush plate, and the protrusions are truncated cone-shaped.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. The air return device of the air spinning machine is provided with a brush plate, which is slidably connected to one side of the filter. The wind entering the box will be filtered through the filter, blocking impurities on one side of the filter. The motor is started to rotate the screw rod, so that the brush plate slides up and down along the guide rod on one side of the filter. In conjunction with the water spray pipe, the brush plate brushes the impurities on the filter, making the flushing effect of the filter better.

[0029] 2. The return air device of the air spinning machine is provided with a filter, which is fixedly connected to the inside of the box. When the gas in the air spinning machine is discharged into the box, the filter will filter the impurities in the gas, start the fan, and the fan will drive the rotating ring and the clamping rod to rotate. The clamping rod slides inside the slot plate, which will push the slot plate to move up and down, so that the brush plate slides up and down on one side of the filter to scrape off the impurities on the filter, reduce blockage, and then reduce the dust and flying catkins in the gas through the box, so that the impurities in the gas returning to the air spinning machine are reduced, thereby reducing the impact on the yarn quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the three-dimensional structure of Example 1 of the present utility model;

[0031] Figure 2 This is a schematic diagram of the structure inside the box in Example 1 of the present utility model;

[0032] Figure 3 This is a schematic structural diagram of the filter screen in Example 1 of the present utility model;

[0033] Figure 4 This is a schematic structural diagram of the filter screen in Example 2 of the present utility model;

[0034] Figure 5 This utility model Figure 4 Schematic diagram of the structure with the A part in the middle enlarged.

[0035] In the figure: 1. Base; 2. Air-spinning machine; 3. Fan; 4. First air inlet duct; 5. Box; 6. Filter; 7. Motor; 8. Screw; 9. Brush plate; 10. Limiting groove; 11. Guide rod; 12. Water tank; 13. Water spray pipe; 14. Dryer; 15. Air volume measuring instrument; 16. Return air duct; 17. Fan; 18. Rotating ring; 19. Clamping rod; 20. Clamping plate; 21. Connecting plate; 22. Second air inlet duct; 23. Drain pipe. DETAILED DESCRIPTION

[0036] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0037] Example 1: Figure 1-Figure 3As shown, the technical solution adopted by the present invention is as follows: an air return device for an air spinning machine, comprising a base 1, an air spinning machine 2 and a housing 5 fixedly mounted on the top of the base 1, the air inlet of the air spinning machine 2 and the air outlet of the housing 5 being connected via a return air duct 16. That is, one end of the return air duct 16 is fixedly connected to the air inlet of the air spinning machine 2, and the other end of the return air duct 16 is fixedly connected to the air outlet of the housing 5.

[0038] The air outlet of the air spinning machine 2 is communicated with the air inlet of the box body 5 through a ventilation pipe.

[0039] The ventilation duct includes a first air inlet duct 4 and a second air inlet duct 22. A fan 3 is fixedly connected to the top of the base 1. One end of the second air inlet duct 22 is fixedly connected to the air inlet of the fan 3, and the other end is fixedly connected to the air outlet of the air spinning machine 2. One end of the first air inlet duct 4 is fixedly connected to the air outlet of the fan 3, and the other end is fixedly connected to the air inlet of the housing 5. When the fan 3 is turned on, air from the air spinning machine 2 enters the fan 3 through the second air inlet duct 22, and air from the fan 3 enters the housing 5 through the first air inlet duct 4.

[0040] The inside of the box body 5 is fixedly connected with a filter screen 6. Two groups of spray pipes are fixedly provided on the top of the box body 5, and the filter screen 6 is located between the two groups of spray pipes. A brush plate 9 is slidably provided on one side of the filter screen 6.

[0041] The top of casing 5 is fixedly connected with water tank 12, and the inside of water tank 12 is fixedly connected with water pump, and the output end of water pump is fixedly connected with water outlet pipe, and water outlet pipe is horizontally arranged. Start water pump, and the water in water tank 12 will be passed in the water outlet pipe.

[0042] The sprinkler pipes include several water spray pipes 13, all arranged vertically. The tops of the water spray pipes 13 are fixedly connected to the top surface of the housing 5 and the bottom surface of the water tank 12. The tops of the water spray pipes 13 are fixedly connected to the outlet pipes at intervals, allowing water in the outlet pipes to enter the water spray pipes 13.

[0043] The bottom end of each water spray pipe 13 is fixedly connected with a nozzle, and the nozzle of the nozzle is toward the filter screen 6. The water in the water spray pipe 13 is sprayed out through the nozzle, and the water is sprayed toward the filter screen 6 to rinse the filter screen 6.

[0044] A lifting assembly is provided inside the box body 5 , and the lifting assembly drives the brush plate 9 to slide vertically up and down on one side of the filter screen 6 .

[0045] The lifting assembly includes a vertically arranged screw 8. The bottom end of the screw 8 is pivotally connected to the bottom surface of the housing 5, and the top end of the screw 8 pivots through the top surface of the housing 5. A brush plate 9 is threadedly mounted on the screw 8. As the screw 8 rotates, the brush plate 9 moves up and down along the screw 8 on one side of the filter 6. Several brushes are located on the side of the brush plate 9 facing the filter 6.

[0046] The top of the box body 5 is fixedly connected with the motor 7, and the top end of the screw rod 8 is fixedly connected to the output end of the motor 7. When the motor 7 is started, the output shaft of the motor 7 drives the screw rod 8 to rotate.

[0047] A limit assembly is provided inside the box body 5, and the limit assembly limits the brush plate 9 to only be able to slide up and down.

[0048] The limiting assembly includes a guide rod 11, which is fixedly connected to the inside of the box body 5. The guide rod 11 is parallel to the screw rod 8, and the brush plate 9 is slidably sleeved on the guide rod 11. The guide rod 11 limits the up and down movement of the brush plate 9.

[0049] The inner walls of the two corresponding sides of the box body 5 are provided with limiting grooves 10, and the two ends of the brush plate 9 are respectively slidably connected in the corresponding limiting grooves 10. The limiting grooves 10 again limit the movement of the brush plate 9.

[0050] The side where the filter screen 6 contacts the brush plate 9 is evenly fixedly connected with a plurality of protrusions, which are in the shape of a truncated cone, so that impurities are located on the protrusions, making it convenient for the brush plate 9 to scrub the protrusions.

[0051] An air flow meter 15 is fixedly mounted on the inner wall of the connection between the box 5 and the return air duct 16. The wind speed is measured by the air flow meter 15. The air flow meter 15 is used to measure the wind speed and is an existing product. When the wind speed decreases, the filter 6 is more clogged, so the filter 6 can be cleaned in time.

[0052] A dryer 14 is fixedly connected to the middle of the top surface of the housing 5. A through-hole is provided on the top surface of the housing 5, and the air outlet of the dryer 14 corresponds to the through-hole above and below. After the water spray pipe 13 rinses the filter 6, the dryer 14 is started, and hot air enters the housing 5 through the through-hole, drying the housing 5. Under the suction force of the fan, the dryer 14 directly converts fresh cold air from outside into dry hot air after heat exchange with the heater through the air inlet. The hot air is then used for drying. The dryer 14 is an existing product. It is also described in detail in patent CN214032797U mentioned in the background technology.

[0053] The bottom of one side of the box body 5 is fixedly connected with a drain pipe 23. After the water spray pipe 13 flushes the filter screen 6, the flushed water and impurities can be discharged through the drain pipe 23.

[0054] Working principle:

[0055] The air-spinning machine mainly adopts air-spinning technology, which uses high-speed rotating air to twist the yarn into yarn for subsequent textile processes. The air-spinning machine in this application is the air-spinning machine 2.

[0056] When in use, the fan 3 is started, and the gas in the air spinning machine 2 enters the fan 3 through the second air inlet pipe 22 , and the gas in the fan 3 enters the box 5 through the first air inlet pipe 4 .

[0057] The filter screen 6 filters the gas in the box body 5 so that the impurities in the gas are located on one side of the filter screen 6. The filtered gas is discharged into the return air duct 16, and the gas in the return air duct 16 enters the air spinning machine 2 again for use.

[0058] To clean the filter 6, start the motor 7 and water pump. The output shaft of the motor 7 drives the screw 8 to rotate forward, and the screw 8 rotates on the brush plate 9. This drives the brush plate 9 to move upward on the guide rod 11. The output shaft of the motor 7 drives the screw 8 to rotate reversely, and the brush plate 9 moves downward on the guide rod 11.

[0059] Then, the output shaft of the motor 7 rotates forward and reversely, so that the brush plate 9 moves up and down on one side of the filter screen 6, and at the same time, the two ends of the brush plate 9 slide in the corresponding limit grooves 10. The brush plate 9 brushes the impurities on the filter screen 6.

[0060] The water pump will pass the water in the water tank 12 into the water outlet pipe, and the water in the water outlet pipe enters several spray pipes 13. The water in the spray pipe 13 is sprayed by a shower nozzle, and water is sprayed toward the filter screen 6, and the filter screen 6 is rinsed.

[0061] The water and impurities after rinsing will be discharged through the drain pipe 23. Then the dryer 14 will be started, and hot air will enter the box body 5 through the through hole to air dry the box body 5. So that it can be used again.

[0062] Example 2: Figure 4-Figure 5 As shown, the air return device for an air spinning machine includes a base 1, on the top of which an air spinning machine 2 and a housing 5 are fixedly mounted. The air inlet of the air spinning machine 2 is connected to the air outlet of the housing 5 via a return air duct 16. That is, one end of the return air duct 16 is fixedly connected to the air inlet of the air spinning machine 2, and the other end of the return air duct 16 is fixedly connected to the air outlet of the housing 5.

[0063] The air outlet of the air spinning machine 2 is communicated with the air inlet of the box body 5 through a ventilation pipe.

[0064] The ventilation duct includes a first air inlet duct 4 and a second air inlet duct 22. A fan 3 is fixedly connected to the top of the base 1. One end of the second air inlet duct 22 is fixedly connected to the air inlet of the fan 3, and the other end is fixedly connected to the air outlet of the air spinning machine 2. One end of the first air inlet duct 4 is fixedly connected to the air outlet of the fan 3, and the other end is fixedly connected to the air inlet of the housing 5. When the fan 3 is turned on, air from the air spinning machine 2 enters the fan 3 through the second air inlet duct 22, and air from the fan 3 enters the housing 5 through the first air inlet duct 4.

[0065] The inside of the box body 5 is fixedly connected with a filter screen 6. Two groups of spray pipes are fixedly provided on the top of the box body 5, and the filter screen 6 is located between the two groups of spray pipes. A brush plate 9 is slidably provided on one side of the filter screen 6.

[0066] The top of casing 5 is fixedly connected with water tank 12, and the inside of water tank 12 is fixedly connected with water pump, and the output end of water pump is fixedly connected with water outlet pipe, and water outlet pipe is horizontally arranged. Start water pump, and the water in water tank 12 will be passed in the water outlet pipe.

[0067] The sprinkler pipes include several water spray pipes 13, all arranged vertically. The tops of the water spray pipes 13 are fixedly connected to the top surface of the housing 5 and the bottom surface of the water tank 12. The tops of the water spray pipes 13 are fixedly connected to the outlet pipes at intervals, allowing water in the outlet pipes to enter the water spray pipes 13.

[0068] The bottom end of each water spray pipe 13 is fixedly connected with a nozzle, and the nozzle of the nozzle is toward the filter screen 6. The water in the water spray pipe 13 is sprayed out through the nozzle, and the water is sprayed toward the filter screen 6 to rinse the filter screen 6.

[0069] A lifting assembly is provided inside the box body 5 , and the lifting assembly drives the brush plate 9 to slide vertically up and down on one side of the filter screen 6 .

[0070] The lifting assembly includes a fan 17, which consists of a motor and blades. A support rod is fixedly connected to the interior of the first air inlet duct 4 near the end of the housing 5. The motor of fan 17 is fixedly connected to one side of the support rod, and the blades are fixedly connected to the output shaft of the motor. When the motor is started, the output shaft drives the blades to rotate.

[0071] One end of the output shaft of the motor extends into the box body 5 .

[0072] The end of the output shaft of the motor is coaxially fixedly connected to a rotating ring 18 , and one side of the rotating ring 18 is eccentrically fixedly connected to a clamping rod 19 .

[0073] A connecting plate 21 is fixedly connected to the middle of one side of the brush plate 9. A slot plate 20 is fixedly connected to one end of the connecting plate 21. The clamping rod 19 is slidably connected to the interior of the slot plate 20. The slot plate 20 is shaped like a rectangular ring, with both ends of the slot plate 20 being curved, and the shapes of the ends of the slot plate 20 are compatible with the clamping rod 19. Several brushes are installed on the side of the brush plate 9 facing the filter 6.

[0074] The inner walls of the two corresponding sides of the box body 5 are provided with limiting grooves 10, and the two ends of the brush plate 9 are respectively slidably connected in the corresponding limiting grooves 10. The limiting grooves 10 limit the up and down sliding of the brush plate 9.

[0075] The side where the filter screen 6 contacts the brush plate 9 is evenly fixedly connected with a plurality of protrusions, which are in the shape of a truncated cone, so that impurities are located on the protrusions, making it convenient for the brush plate 9 to scrub the protrusions.

[0076] An air flow meter 15 is fixedly mounted on the inner wall of the connection between the box 5 and the return air duct 16. The wind speed is measured by the air flow meter 15. The air flow meter 15 is used to measure the wind speed and is an existing product. When the wind speed decreases, the filter 6 is more clogged, so the filter 6 can be cleaned in time.

[0077] A dryer 14 is fixedly connected to the middle of the top surface of the box 5. A through hole is opened on the top surface of the box 5, and the air outlet of the dryer 14 corresponds to the through hole above and below. After the water spray pipe 13 rinses the filter 6, the dryer 14 is started, and hot air will enter the box 5 through the through hole to dry the box 5.

[0078] The bottom of one side of the box body 5 is fixedly connected with a drain pipe 23. After the water spray pipe 13 flushes the filter screen 6, the flushed water and impurities can be discharged through the drain pipe 23.

[0079] Working principle:

[0080] When in use, the fan 3 is started, and the gas in the air spinning machine 2 enters the fan 3 through the second air inlet pipe 22 , and the gas in the fan 3 enters the box 5 through the first air inlet pipe 4 .

[0081] The filter screen 6 filters the gas in the box body 5 so that the impurities in the gas are located on one side of the filter screen 6. The filtered gas is discharged into the return air duct 16, and the gas in the return air duct 16 enters the air spinning machine 2 again for use.

[0082] When filter screen 6 is cleaned, start fan 17 and water pump. The motor of fan 17 drives fan blade to rotate, and fan blade rotation produces blowing force, accelerates the exhaust speed of casing 5.

[0083] The motor of the fan 17 drives the rotating ring 18 and the card rod 19 to rotate at the same time. The card rod 19 slides inside the card slot plate 20, pushing the card slot plate 20 to move up and down, causing the brush plate 9 to slide up and down on one side of the filter screen 6 to scrape off impurities on the filter screen 6.

[0084] The water pump will pass the water in the water tank 12 into the water outlet pipe, and the water in the water outlet pipe enters several spray pipes 13. The water in the spray pipe 13 is sprayed by a shower nozzle, and water is sprayed toward the filter screen 6, and the filter screen 6 is rinsed.

[0085] The water and impurities after rinsing will be discharged through the drain pipe 23. Then the dryer 14 will be started, and hot air will enter the box body 5 through the through hole to air dry the box body 5. So that it can be used again.

[0086] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An air return device for an air spinning machine, characterized in that: The invention comprises a base (1), an air spinning machine (2) and a box (5) are fixedly mounted on the top of the base (1), an air inlet of the air spinning machine (2) is connected to an air outlet of the box (5) via a return air pipe (16), and an air outlet of the air spinning machine (2) is connected to an air inlet of the box (5) via a ventilation pipe; The interior of the box (5) is fixedly connected with a filter screen (6), the top of the box (5) is fixedly provided with two groups of spray pipes, the filter screen (6) is located between the two groups of spray pipes, a brush plate (9) is slidably provided on one side of the filter screen (6), and a lifting assembly is provided inside the box (5), which drives the brush plate (9) to slide vertically up and down on one side of the filter screen (6).

2. The air return device of an air spinning machine according to claim 1, characterized in that: The ventilation pipe comprises a first air inlet pipe (4) and a second air inlet pipe (22); the top of the base (1) is fixedly connected to a fan (3); one end of the second air inlet pipe (22) is fixedly connected to the air inlet of the fan (3); the other end of the second air inlet pipe (22) is fixedly connected to the air outlet of the air spinning machine (2); one end of the first air inlet pipe (4) is fixedly connected to the air outlet of the fan (3); and the other end of the first air inlet pipe (4) is fixedly connected to the air inlet of the box (5).

3. The air return device of an air spinning machine according to claim 1, characterized in that: A dryer (14) is fixedly connected to the middle of the top surface of the box body (5), and a through hole is opened on the top surface of the box body (5), and the air outlet of the dryer (14) corresponds to the through hole in the upper and lower parts.

4. The air return device of an air spinning machine according to claim 1, characterized in that: The top of the box body (5) is fixedly connected to a water tank (12), the interior of the water tank (12) is fixedly connected to a water pump, the output end of the water pump is fixedly connected to a water outlet pipe, and the water outlet pipe is arranged horizontally; The spray pipe comprises a plurality of water spray pipes (13), the plurality of water spray pipes (13) are arranged vertically, the tops of the plurality of water spray pipes (13) are fixedly passed through the top surface of the box body (5) and the bottom surface of the water tank (12), and the tops of the plurality of water spray pipes (13) are fixedly connected to the water outlet pipe at intervals; The bottom end of each water spray pipe (13) is fixedly connected to a spray head, and the nozzle of the spray head faces the filter screen (6).

5. The air return device of an air spinning machine according to claim 1, characterized in that: A drainage pipe (23) is fixedly connected to the bottom of one side of the box body (5).

6. The air return device of an air spinning machine according to claim 1, characterized in that: The lifting assembly includes a screw rod (8), the screw rod (8) is arranged vertically, the bottom end of the screw rod (8) is rotatably connected to the bottom surface of the box body (5), the top end of the screw rod (8) is rotatably passed through the top surface of the box body (5), and the brush plate (9) is threadedly sleeved on the screw rod (8); The top of the box (5) is fixedly connected to a motor (7), and the top end of the screw rod (8) is fixedly connected to the output end of the motor (7); A limiting component is provided inside the box (5), and the limiting component limits the brush plate (9) to slide only up and down.

7. The air return device of an air spinning machine according to claim 6, characterized in that: The limiting assembly includes a guide rod (11), the guide rod (11) is fixedly connected to the inside of the box (5), the guide rod (11) is parallel to the screw rod (8), and the brush plate (9) is slidably sleeved on the guide rod (11); Limiting grooves (10) are provided on the inner walls of the two corresponding side surfaces of the box body (5), and the two ends of the brush plate (9) are respectively slidably connected in the corresponding limiting grooves (10).

8. The air return device of an air spinning machine according to claim 2, characterized in that: The lifting assembly includes a fan (17), which is composed of a motor and fan blades. A support rod is fixedly connected to the interior of one end of the first air inlet pipe (4) close to the box (5). The motor of the fan (17) is fixedly connected to one side of the support rod, and the fan blades are fixedly connected to the output shaft of the motor. One end of the output shaft of the motor extends into the box (5). The end of the output shaft of the motor is coaxially fixedly connected to a rotating ring (18), and one side of the rotating ring (18) is eccentrically fixedly connected to a clamping rod (19); A connecting plate (21) is fixedly connected to the middle of one side of the brush plate (9), one end of the connecting plate (21) is fixedly connected to a slot plate (20), and a clamping rod (19) is slidably connected to the inside of the slot plate (20); Limiting grooves (10) are provided on the inner walls of the two corresponding side surfaces of the box body (5), and the two ends of the brush plate (9) are respectively slidably connected in the corresponding limiting grooves (10).

9. The air return device of an air spinning machine according to claim 1, characterized in that: A plurality of protrusions are evenly and fixedly connected to the side of the filter screen (6) that contacts the brush plate (9), and the protrusions are in a truncated cone shape.

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