CN213421675U

CN213421675U - Rotary drum drying device for chemical fiber production

Info

Publication number: CN213421675U
Application number: CN202022253408.3U
Authority: CN
Inventors: 罗湘宇; 林雪容
Original assignee: Guangzhou Shuangxiong Chemical Fiber Co ltd
Current assignee: Guangzhou Shuangxiong Chemical Fiber Co ltd
Priority date: 2020-10-11
Filing date: 2020-10-11
Publication date: 2021-06-11
Anticipated expiration: 2030-10-11

Abstract

The utility model relates to a rotary drum drying device for chemical fiber production, which comprises a supporting rack, install the rotary drum on the support frame, the rotary drum includes casing and inner bag, be the intermediate layer between casing and the inner bag, the cross-under has the inlet pipe between casing and the inner bag, the discharging pipe, the inlet pipe, the discharging pipe all communicates with the inner bag is inside, the intermediate layer intercommunication has heating system, the inner bag intercommunication has vacuum pumping system, fixedly connected with bull stick between the both ends of inner bag, the outer peripheral face of bull stick is equipped with the subassembly that turns that is used for turning the dacron sliced, the coaxial fixedly connected with main rotary drum of one end of casing, the vice rotary drum of the coaxial fixedly connected with of the other end of casing, be connected with the main rotary. This application has the exchange speed who accelerates upper dacron section and lower floor's dacron section in the rotary drum to accelerate the effect of the whole drying rate of dacron section.

Description

Rotary drum drying device for chemical fiber production

Technical Field

The application relates to the technical field of chemical fiber production and processing, in particular to a drum drying device for chemical fiber production.

Background

The chemical fiber is a chemical fiber, which is made of natural or synthetic high molecular substance. Depending on the source of the raw material, the fiber can be classified into artificial fiber using a natural polymer as the raw material and synthetic fiber using a synthetic polymer as the raw material.

At present, the raw materials for producing domestic synthetic fibers mainly comprise high molecular compounds such as terylene, acrylic fibers, chinlon and the like, wherein when the terylene is used as the raw material for producing the fibers, the terylene slices need to be dried and then sent for spinning, and the drying of the terylene slices is an important process in the spinning.

The common drying mode of the polyester chips is to reduce the water vapor partial pressure of the polyester chips by methods of vacuumizing, air dehumidifying, temperature increasing and the like. Therefore, the ideal equipment for drying the polyester chips is a vacuum drum dryer.

The working principle of the vacuum drum dryer is that moisture in the polyester slices is evaporated at a certain temperature, and then the moisture is pumped out along with air by means of a vacuum system so as to achieve the purpose of drying the polyester slices. Vacuum drum dryers generally consist of a drum, a vacuum pumping system and a heating system.

To the correlation technique among the above-mentioned, the inventor thinks that the rotary drum is at the pivoted in-process, though the dacron section in the rotary drum has some to follow the rotary drum rotation, but the rotational speed of rotary drum is unlikely to let the dacron section depend on the inside wall of rotary drum completely, consequently some dacron sections can be piled up together for upper polyester section is difficult with inner bag direct contact, thereby make partial upper dacron section's drying rate slower, so that need spend longer time drying dacron section, thereby influence the defect of chemical fiber production progress.

SUMMERY OF THE UTILITY MODEL

In order to improve dacron section's drying rate, the application provides a rotary drum drying device for chemical fiber production.

The application provides a rotary drum drying device for chemical fiber production adopts following technical scheme:

the utility model provides a rotary drum drying device for chemical fibre production, includes the support frame, install the rotary drum on the support frame, the rotary drum includes casing and inner bag, be the intermediate layer between casing and the inner bag, the casing with cross-under has inlet pipe, discharging pipe between the inner bag, the inlet pipe the discharging pipe all with the inside intercommunication of inner bag, the intermediate layer intercommunication has heating system, the inside intercommunication of inner bag has vacuum pumping system, fixedly connected with bull stick between the both ends of inner bag, the outer peripheral face of bull stick is equipped with the subassembly that turns that is used for turning the dacron sliced, the coaxial fixedly connected with main rotary drum of one end of casing, the coaxial fixedly connected with auxiliary rotary drum of the other end of casing, be connected with the drive on the main rotary drum pivoted drive assembly.

By adopting the technical scheme, when the polyester chips need to be dried, hot oil is introduced into the interlayer through the heating system, so that the temperature of the rotary drum is increased, wherein the temperature of the inner container is the highest, and the drying speed of the polyester chips directly contacted with the inner container is the fastest. In pouring the dacron section into the rotary drum from the inlet pipe, rotate through the main rotary drum of drive assembly drive, main rotary drum rotates and drives the rotary drum and rotate, and the rotary drum drives the dacron section at the rotation in-process and rolls, and the dacron section constantly contacts with the inner bag inside wall to the moisture evaporation that makes, but some dacron sections that are located the upper strata are difficult to direct and the inside wall contact of inner bag at the roll in-process, thereby make partial dacron section's drying rate slower. Consequently through fixedly connected with bull stick between the both ends of inner bag, and the outer peripheral face of bull stick is equipped with the subassembly that turns that is used for turning the dacron sliced, the bull stick drives the subassembly that turns at the rotation in-process and rotates, the subassembly that turns the dacron section for upper dacron section mixes with lower floor's section, accelerate upper dacron section and lower floor's dacron sliced exchange speed, thereby make the dacron section homoenergetic contact with the inside wall of inner bag fast, thereby accelerate the sliced whole drying rate of dacron. In the drying process of the polyester chips, water is evaporated into water vapor, and air and the water vapor are pumped out together through a vacuum pumping system, so that the overall drying speed of the polyester chips is accelerated.

Preferably, the turning assembly comprises a plurality of connecting rods, the connecting rods are distributed along the circumference of the rotating rod in the length direction at intervals, and one end of each connecting rod, far away from the rotating rod, is fixedly connected with a bucket used for turning the polyester slices.

Through adopting above-mentioned technical scheme, the one end fixedly connected with through keeping away from the bull stick at the connecting rod is used for turning the sliced scraper bowl of dacron, and the bull stick drives the scraper bowl at the rotation in-process and rotates, and the scraper bowl is taken lower floor's dacron section aloft, forms to turn over the effect of stir-fry to accelerate the exchange speed of upper dacron and lower floor's dacron, in order to accelerate the sliced whole drying rate of dacron.

Preferably, the bottom part of the bucket is open.

Through adopting above-mentioned technical scheme, through the bottom part opening setting with the scraper bowl for the dacron section of shoveling by the scraper bowl can drop from the cavity position of scraper bowl at once, when turning the dacron section, reduces the time of dacron section and inner bag separation, thereby accelerates the sliced drying rate of dacron.

Preferably, the vacuum pumping system comprises a sleeve sleeved on the periphery of the shell, two ends of the sleeve are closed, a gap exists between the outer side wall of the shell and the inner side wall of the sleeve, and the main rotating cylinder and the auxiliary rotating cylinder both penetrate through the sleeve and are rotatably connected with the sleeve; the inner bag with wear to be equipped with the breather pipe between the casing, the breather pipe with the one end fixedly connected with filter screen of inner bag intercommunication, telescopic outer peripheral face intercommunication has the exhaust tube, the exhaust tube with the sleeve space between the casing communicates, telescopic one end intercommunication is kept away from to the exhaust tube has the vacuum pump.

Through adopting above-mentioned technical scheme, because of the dacron section is at the drying process, the vapor that evaporates, need discharge the vapor from the inner bag to guarantee the inside drying of inner bag. Therefore, through the periphery cover at the casing be equipped with the sleeve, there is the interval between the lateral wall of telescopic inside wall and casing, at the dacron section in drying process, start the vacuum pump, the space between casing and the sleeve is arranged to the breather pipe to vapor, later discharges through the exhaust tube under the suction effect of vacuum pump. Because of main rotary drum, vice rotary drum all are connected with the sleeve rotation for the rotary drum is rotating the in-process, and the sleeve can not rotate, thereby makes the exhaust tube be difficult for with support frame or other spare parts between bump, so that the stable operation of rotary drum. And the breather pipe is located the terminal fixedly connected with filter screen of inner bag for vacuum pump during operation, the filter screen is strained the dacron section, makes the dacron section difficult to be taken out.

Preferably, the heating system comprises an oil inlet pipe and an oil outlet pipe, the oil inlet pipe is coaxially inserted into the main drum and communicated with the interlayer, one end of the oil inlet pipe, which is far away from the drum, is communicated with a main oil delivery pipe, and a first rotary joint is communicated between the oil inlet pipe and the main oil delivery pipe; the oil outlet pipe is coaxially inserted into the auxiliary rotary drum and communicated with the interlayer, one end, far away from the rotary drum, of the oil outlet pipe is communicated with an auxiliary oil delivery pipe, a second rotary joint is communicated between the oil outlet pipe and the auxiliary oil delivery pipe, and a heating box is communicated between the main oil delivery pipe and the auxiliary oil delivery pipe.

By adopting the technical scheme, the oil inlet pipe is coaxially inserted into the main rotary drum, the oil inlet pipe is communicated with the interlayer, hot oil flows into the interlayer from the oil inlet pipe through the main oil conveying pipe, then flows out of the oil outlet pipe, is heated by the heating box and then flows into the oil inlet pipe, and the circulation is performed, so that the hot oil in the interlayer is always in a high-temperature state, and the drying speed of the polyester chips is accelerated. Simultaneously, advance oil pipe and pass through first rotary joint intercommunication with main oil transportation pipe, go out oil pipe and pass through the second rotary joint intercommunication with vice oil transportation pipe for when the rotary drum rotates, main defeated oil pipe is difficult for rotating with vice defeated oil pipe, thereby guarantees the stability of defeated oil.

Preferably, the driving assembly comprises a motor, the output end of the motor is fixedly connected with a main belt pulley, the outer peripheral surface of the main rotating drum is fixedly sleeved with an auxiliary belt pulley, and a transmission belt is in winding transmission between the main belt pulley and the auxiliary belt pulley.

Through adopting above-mentioned technical scheme, cup joint through the outer peripheral face at main rotary drum and be fixed with vice belt pulley, the vice rotary drum of output fixedly connected with of motor, the wire-wound transmission has driving belt between vice rotary drum and the vice belt pulley, and the motor passes through driving belt drive main rotary drum and rotates to drive the rotary drum and turn over the subassembly and rotate, in order to accelerate the sliced drying rate of dacron.

Preferably, the support frame includes two support columns arranged oppositely, the main drum and the auxiliary drum penetrate through the two support columns respectively, and both the main drum and the auxiliary drum are rotatably connected with the support columns.

Through adopting above-mentioned technical scheme, the support column provides the support for main rotary drum and vice rotary drum, makes the rotary drum hang in the air simultaneously, and after the dacron section is dry, convenient unloading.

Preferably, rolling bearings are arranged at the joints of the main rotating cylinder, the auxiliary rotating cylinder and the support columns.

By adopting the technical scheme, the rolling bearings are arranged at the joints of the main rotating drum, the auxiliary rotating drum and the support columns, and when the main rotating drum and the auxiliary rotating drum rotate, the rolling bearings reduce the friction force on the main rotating drum and the auxiliary rotating drum, so that the output power of the motor is reduced, and the service life of the motor is prolonged; meanwhile, the rolling bearing enables the main rotary drum and the support column and the auxiliary rotary drum to be fixed with the support column, so that the main rotary drum and the auxiliary rotary drum are not prone to shaking when rotating, and the rotary drum is stable in rotation.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the rotating rod is fixedly connected between the two ends of the inner container, the turning assembly for turning the polyester slices is arranged on the outer peripheral surface of the rotating rod, the rotating rod drives the turning assembly to rotate in the rotating process, and the turning assembly turns the polyester slices, so that the upper polyester slices and the lower polyester slices are turned back and forth, the exchange speed of the upper polyester slices and the lower polyester slices is increased, the polyester slices can be rapidly contacted with the inner side wall of the inner container, and the overall drying speed of the polyester slices is increased;

2. the sleeve is sleeved on the periphery of the shell, a distance is reserved between the inner side wall of the sleeve and the outer side wall of the shell, the vent pipe is connected between the shell and the inner container in a penetrating manner, the vacuum pump is started in the drying process of the polyester slices, water vapor is discharged to the space between the shell and the sleeve from the vent pipe, and then the water vapor is discharged through the exhaust pipe under the suction action of the vacuum pump, so that the inner container is kept dry;

3. an oil inlet pipe is inserted in the main rotary drum, an oil outlet pipe is inserted in the auxiliary rotary drum, hot oil flows into the interlayer through the oil inlet pipe, flows out through the oil outlet pipe, is heated by the heating box and then flows into the oil inlet pipe, and the hot oil is circulated in a reciprocating mode, so that the hot oil in the interlayer is always in a high-temperature state, and the overall drying speed of the polyester slices is accelerated.

Drawings

FIG. 1 is a schematic overall structure of the present application;

FIG. 2 is a schematic view of the internal structure of the drum of the present application;

FIG. 3 is an enlarged schematic view of A in FIG. 2 of the present application;

fig. 4 is an enlarged schematic view of B in fig. 2 in the present application.

Description of reference numerals: 1. a support pillar; 2. a feed pipe; 3. a discharge pipe; 4. a drum; 41. a housing; 42. an inner container; 43. an interlayer; 5. sealing the end cap; 6. a main drum; 7. a secondary drum; 8. a drive assembly; 81. a motor; 82. a primary pulley; 83. a secondary pulley; 84. a drive belt; 9. a sleeve; 10. a convex ring; 11. a cover; 12. a breather pipe; 13. a filter screen; 14. a vacuum pump; 15. an air exhaust pipe; 16. an oil inlet pipe; 17. a main oil delivery pipe; 18. a first rotary joint; 19. an oil outlet pipe; 20. an auxiliary oil delivery pipe; 21. a second rotary joint; 22. a heating box; 23. a rotating rod; 24. a connecting rod; 25. a bucket; 26. a rolling bearing; 27. and a support plate.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a rotary drum drying device for chemical fiber production. Referring to fig. 1 and 2, the drum drying device includes the support frame, and the support frame includes two support columns 1 that relative setting, and support column 1 is vertical to be set up, rotates between two support columns 1 and is connected with rotary drum 4. The rotary drum 4 is arranged in a hollow cylinder shape, the rotary drum 4 comprises a shell 41 and an inner container 42, and an interlayer 43 is arranged between the shell 41 and the inner container 42. The outer peripheral face of rotary drum 4 is equipped with inlet pipe 2 and discharging pipe 3, inlet pipe 2, discharging pipe 3 all with the inside intercommunication of inner bag 42, the equal threaded connection of open end of inlet pipe 2 and discharging pipe 3 has end cover 5.

Referring to fig. 2 and 3, a main drum 6 is coaxially and fixedly connected to one end of the housing 41, one end of the main drum 6, which is away from the drum 4, penetrates through the supporting column 1 and is rotatably connected to the supporting column 1, and a driving assembly 8 for driving the main drum 6 to rotate is connected to a portion of the main drum 6, which is located between the supporting column 1 and the drum 4. The opposite side coaxial fixedly connected with vice rotary drum 7 of casing 41 one end that is equipped with main rotary drum 6, the one end that vice rotary drum 7 kept away from rotary drum 4 pierces through support column 1 and is connected with support column 1 rotation.

Referring to fig. 2, the driving assembly 8 includes a motor 81, a supporting plate 27 is fixedly connected to an outer side surface of the supporting column 1 near the main drum 6, the supporting plate 27 is horizontally disposed, and the motor 81 is installed on an upper end surface of the supporting plate 27. The output end of the motor 81 is coaxially and fixedly connected with a main belt pulley 82, the outer peripheral surface of the part of the main drum 6 between the shell 41 and the support column 1 is fixedly sleeved with an auxiliary belt pulley 83, and a transmission belt 84 is wound between the main belt pulley 82 and the auxiliary belt pulley 83 for transmission.

The jacket 43 is connected to a heating system which feeds hot oil into the jacket 43 to raise the temperature inside the drum 4. The inner container 42 is communicated with a vacuum-pumping system which pumps out water vapor so as to keep the interior of the rotary drum 4 dry.

The vacuumizing system comprises a sleeve 9 sleeved on the periphery of the shell 41, two ends of the sleeve 9 are closed, and a space exists between the inner side wall of the sleeve 9 and the outer side wall of the shell 41. The feeding pipe 2 and the discharging pipe 3 are both located in a space between the sleeve 9 and the shell, the sleeve 9 is opposite to openings of the feeding pipe 2 and the discharging pipe 3, a convex ring 10 is convexly arranged on the edge of the opening of the sleeve 9, the inner diameter of the convex ring 10 is larger than the inner diameters of the feeding pipe 2 and the discharging pipe 3, and a cover 11 is in threaded connection with the convex ring 10. The sleeve 9 is penetrated to the one end that casing 41 was kept away from to main rotary drum 6, vice rotary drum 7, and main rotary drum 6, vice rotary drum 7 all are connected with sleeve 9 rotation.

A vent pipe 12 penetrates between the shell 41 and the inner container 42, one end of the vent pipe 12 is communicated with the inner container 42, the other end of the vent pipe 12 is communicated with the space between the shell 41 and the sleeve 9, and a filter screen 13 is fixedly connected to one end of the vent pipe 12 communicated with the inner container 42. The vacuum pump 14 is installed on the ground, the air inlet end of the vacuum pump 14 is communicated with the air exhaust pipe 15, and one end, far away from the ground, of the air exhaust pipe 15 extends to be communicated with the space between the sleeve 9 and the outer side. The water vapor in the inner container 42 is discharged to the space between the sleeve 9 and the housing 41 through the vent pipe 12, and then is discharged through the suction pipe 15 by the suction action of the vacuum pump 14.

Referring to fig. 2 and 4, the heating system includes an oil inlet pipe 16, the oil inlet pipe 16 is coaxially inserted into the main drum 6, the oil inlet pipe 16 is communicated with the interlayer 43, one end of the oil inlet pipe 16, which is far away from the casing 41, is coaxially communicated with a main oil delivery pipe 17, and a first rotary joint 18 is communicated between the oil inlet pipe 16 and the main oil delivery pipe 17. Hot oil flows from the main oil pipe 17 through the oil inlet pipe 16 into the sandwiched layer 43.

Referring to fig. 2 and 3, an oil outlet pipe 19 is coaxially inserted into the auxiliary rotating cylinder 7, and the oil outlet pipe 19 is communicated with the interlayer 43. An auxiliary oil delivery pipe 20 is coaxially communicated with one end, far away from the shell 41, of the oil outlet pipe 19, a second rotary joint 21 is communicated between the oil outlet pipe 19 and the auxiliary oil delivery pipe 20, and hot oil flows out from the oil outlet pipe 19 through the auxiliary oil delivery pipe 20.

Referring to fig. 1 and 2, a heating box 22 is arranged between the main oil delivery pipe 17 and the main oil delivery pipe 20, one end of the auxiliary oil delivery pipe 20 far away from the oil outlet pipe 19 is communicated with the input end of the heating box 22, and one end of the oil inlet pipe 16 far away from the rotating rod 23 is communicated with the output end of the heating box 22. Hot oil in the interlayer 43 flows into the heating box 22 from the oil outlet pipe 19 after flowing from the oil inlet pipe 16, is heated by the heating box 22 and then flows back into the oil inlet pipe 16 to circulate in a reciprocating manner, so that the hot oil in the interlayer 43 is always in a high-temperature state, and the drying speed of the polyester chips is increased.

Referring to fig. 2, a rotating rod 23 is fixedly connected between two ends of the inner container 42, the rotating rod 23 and the inner container 42 are coaxially arranged, and a turning assembly for turning the polyester chips is arranged on the outer peripheral surface of the rotating rod 23. The turning assembly comprises a plurality of connecting rods 24, the connecting rods 24 are circumferentially distributed at intervals along the length direction of the rotating rod 23, one end, far away from the rotating rod 23, of each connecting rod 24 is fixedly connected with a bucket 25, the bottom of each bucket 25 is partially opened, and a gap exists between each bucket 25 and the inner side wall of the inner container 42. Motor 81 passes through the main rotary drum 6 of driving belt 84 drive and rotates, and main rotary drum 6 rotates and drives rotary drum 4 and bull stick 23 and rotate, and then makes scraper bowl 25 rotate, and rotary drum 4 pivoted in-process, dacron section and inner bag 42's inside wall sliding connection, and simultaneously, scraper bowl 25 constantly stirs upper polyester section and lower floor's dacron section for upper dacron section and lower floor's dacron sliced exchange rate, thereby accelerate the sliced whole drying rate of dacron.

The joints of the main drum 6, the auxiliary drum 7 and the support column 1 are also provided with rolling bearings 26, the rolling bearings 26 are fixedly connected in the support column 1, and the main drum 6 and the auxiliary drum 7 respectively penetrate through the inner rings of the two rolling bearings 26 and are fixedly connected with the rolling bearings 26. The rolling bearing 26 reduces the friction force applied to the main drum 6 and the sub drum 7 during rotation, thereby prolonging the service life of the motor 81. And the main rotary drum 6 and the auxiliary rotary drum 7 are fixedly connected with the rolling bearing 26, so that the positions of the main rotary drum 6 and the auxiliary rotary drum 7 are fixed, the main rotary drum 6 and the auxiliary rotary drum 7 are not easy to displace when rotating, and the rotary drum 4 is kept stable.

The implementation principle of the drum 4 drying device for chemical fiber production in the embodiment of the application is as follows:

when the polyester chips are dried, hot oil is guided into the interlayer 43 from the main oil conveying pipe 17 through the oil inlet pipe 16, and the polyester chips to be dried are poured into the rotary drum 4 from the feeding pipe 2. The starting motor 81 rotates with the main rotary drum 6, the main rotary drum 6 rotates to drive the rotary drum 4 and the rotary rod 23 to rotate, the rotary drum 4 slides relative to the rotary drum 4 in the rotating process, and the polyester slices continuously contact with the inner side wall of the inner container 42, so that water is evaporated. Meanwhile, the scraper bucket 25 continuously turns the upper polyester slices and the lower polyester slices to accelerate the exchange speed of the upper polyester slices and the lower polyester slices, so that the polyester slices can be rapidly contacted with the inner side wall of the inner container 42, and the overall drying speed of the polyester slices is accelerated.

And the bottom part opening setting of scraper bowl 25 for the dacron section of being shoveled by scraper bowl 25 can drop fast, thereby reduces the time of dacron section and the separation of inner bag 42 inside wall, makes the dacron section keep higher drying speed.

In the drying process of the polyester slices, water contained in the polyester slices is evaporated into water vapor, and the water vapor is pumped away by the vacuum pump 14 through the exhaust pipe 15 and the vent pipe 12, so that the drying in the rotary drum 4 is kept, and the drying speed of the polyester slices is accelerated.

And taking out the dried terylene slices from the discharge pipe 3, thereby completing the drying of the terylene slices.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a rotary drum drying device for chemical fibre production, includes the support frame, install rotary drum (4) on the support frame, rotary drum (4) include casing (41) and inner bag (42), be intermediate layer (43) between casing (41) and inner bag (42), casing (41) with the cross-under has inlet pipe (2), discharging pipe (3) between inner bag (42), inlet pipe (2) discharging pipe (3) all with the inside intercommunication of inner bag (42), its characterized in that: the interlayer (43) is communicated with a heating system, the inner container (42) is communicated with a vacuum-pumping system, a rotating rod (23) is fixedly connected between two ends of the inner container (42), a turning assembly for turning polyester chips is arranged on the outer peripheral surface of the rotating rod (23), one end of the shell (41) is coaxially and fixedly connected with a main rotating cylinder (6), the other end of the shell (41) is coaxially and fixedly connected with an auxiliary rotating cylinder (7), and the main rotating cylinder (6) is connected with a driving assembly (8) for driving the main rotating cylinder (6) to rotate.

2. A drum drying device for chemical fiber production according to claim 1, characterized in that: the turning assembly comprises a plurality of connecting rods (24), the connecting rods (24) are distributed along the circumference of the length direction of the rotating rod (23) at intervals, and one end of each connecting rod (24) far away from the rotating rod (23) is fixedly connected with a bucket (25) used for turning polyester chips.

3. A drum drying device for chemical fiber production according to claim 2, characterized in that: the bottom part of the bucket (25) is arranged to be open.

4. A drum drying device for chemical fiber production according to claim 1, characterized in that: the vacuumizing system comprises a sleeve (9) sleeved on the periphery of the shell (41), two ends of the sleeve (9) are closed, a gap is formed between the outer side wall of the shell (41) and the inner side wall of the sleeve (9), and the main rotary drum (6) and the auxiliary rotary drum (7) penetrate through the sleeve (9) and are in rotary connection with the sleeve (9); inner bag (42) with wear to be equipped with breather pipe (12) between casing (41), breather pipe (12) with one end fixedly connected with filter screen (13) of inner bag (42) intercommunication, the outer peripheral face intercommunication of sleeve (9) has exhaust tube (15), exhaust tube (15) with sleeve (9) space intercommunication between casing (41), the one end intercommunication that sleeve (9) were kept away from in exhaust tube (15) has vacuum pump (14).

5. A drum drying device for chemical fiber production according to claim 1, characterized in that: the heating system comprises an oil inlet pipe (16) and an oil outlet pipe (19), the oil inlet pipe (16) is coaxially inserted into the main rotary drum (6) and communicated with the interlayer (43), one end, far away from the rotary drum (4), of the oil inlet pipe (16) is communicated with a main oil conveying pipe (17), and a first rotary joint (18) is communicated between the oil inlet pipe (16) and the main oil conveying pipe (17); oil outlet pipe (19) with vice rotary drum (7) coaxial grafting and with intermediate layer (43) intercommunication, oil outlet pipe (19) are kept away from the one end intercommunication of rotary drum (4) has vice defeated oil pipe (20), oil outlet pipe (19) with intercommunication has second rotary joint (21) between vice defeated oil pipe (20), main defeated oil pipe (17) with intercommunication has heating cabinet (22) between vice defeated oil pipe (20).

6. A drum drying device for chemical fiber production according to claim 1, characterized in that: drive assembly (8) include motor (81), the output fixedly connected with main belt pulley (82) of motor (81), the outer peripheral face of main rotary drum (6) cup joints and is fixed with vice belt pulley (83), main belt pulley (82) with the drive of wraparound has drive belt (84) between vice belt pulley (83).

7. A drum drying device for chemical fiber production according to claim 1, characterized in that: the support frame comprises two support columns (1) which are oppositely arranged, the auxiliary rotary drum (7) and the main rotary drum (6) penetrate through the two support columns (1) respectively, and the auxiliary rotary drum (7) and the main rotary drum (6) are rotatably connected with the support columns (1).

8. A drum drying device for chemical fiber production according to claim 7, characterized in that: and rolling bearings (26) are arranged at the joints of the auxiliary rotating cylinder (7), the main rotating cylinder (6) and the supporting column (1).