Heat circulating device of linen dryer

Abstract

The invention discloses a heat circulating device of a linen dryer, and relates to the technical field of linen processing. The heat circulation device of the linen drying machine comprises a drying machine shell, a sealing barrel and a heat circulation structure, a connecting plate is detachably installed on the left side of the drying machine shell, a concentric-square-shaped sealing cover is fixedly installed at the top of the drying machine shell, an induced draft fan is fixedly installed on the inner wall of the rear side of the drying machine shell, and a motor is fixedly installed on the rear side of the drying machine shell; a shell is fixedly installed at the bottom of the inner side of the dryer shell, an electric heating net is fixedly installed on the inner wall of the shell, a roller cover is arranged on the front side of the dryer shell, a sealing barrel is fixedly installed on the inner wall of the front side of the dryer shell, a ventilation roller is arranged in the sealing barrel, and an exhaust pipe is fixedly installed on the top of the sealing barrel. The heat circulation structure is arranged on the dryer shell, the concentric-square-shaped sealing cover and the shell. According to the heat circulation device of the linen dryer, the heat circulation effect is achieved, the energy consumption of the device is reduced, the heat efficiency is improved, and the drying time is shortened.

Description

Technical Field

[0001] The invention relates to the technical field of linen processing, and in particular to a heat circulation device for a linen dryer. Background Art

[0002] A linen dryer disclosed in Chinese patent document CN220202256U comprises a chassis with an opening arranged forward, a cover plate being hingedly connected to the front end of the chassis, a drum being connected inside the chassis, a guide slip ring being fixedly embedded at the front end of the chassis, a fixing plate being fixedly arranged on the rear end surface of the chassis, a power motor being fixedly arranged on the fixing plate, a driving wheel being connected to the front end power of the power motor, the drum extending backward through the chassis, a driven wheel being fixedly arranged on the rear end of the drum, the driven wheel being meshed with the driving wheel, a ventilation pipe being connected inside the drum, a water tank being fixedly arranged in the chassis, a water outlet pipe being connected to the rear end of the water tank, a heating pipe and a connecting pipe being connected to the front and rear end surfaces of the fixing plate respectively, before the drying work starts, water in the linen is thrown out by rotating the drum, and water mist is extracted through the ventilation pipe, so as to improve the water throwing effect, thereby indirectly improving the drying efficiency, and increasing the contact area between the linen and the air by internal and external heating, thereby increasing the amount of linen while maintaining the drying efficiency, thereby indirectly improving the drying efficiency.

[0003] The above-mentioned linen dryer will also extract the hot air inside when extracting the water mist, which not only increases the energy consumption required by the device, but also reduces the thermal efficiency and increases the time required for drying. Therefore, a heat circulation device for a linen dryer is now proposed. Summary of the invention

[0004] The object of the present invention is to solve at least one of the technical problems existing in the prior art and to provide a heat circulation device for a linen dryer, which can solve the problem that when extracting water mist, the hot air inside the linen dryer is also extracted, which not only increases the energy consumption required by the device, but also reduces the thermal efficiency and increases the drying time.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a heat circulation device for a linen dryer, comprising a dryer shell, a sealed cylinder and a heat circulation structure, a connecting plate is detachably installed on the left side of the dryer shell, a circular sealing cover is fixedly installed on the top of the dryer shell, an induced draft fan is fixedly installed on the rear inner wall of the dryer shell, a motor is fixedly installed on the rear side of the dryer shell, a shell is fixedly installed on the inner bottom of the dryer shell, an electric heating network is fixedly installed on the inner wall of the shell, a drum cover is arranged on the front side of the dryer shell, the sealed cylinder is fixedly installed on the front inner wall of the dryer shell, a breathable drum is arranged inside the sealed cylinder, an exhaust pipe is fixedly installed on the top of the sealed cylinder, a heat circulation structure is arranged on the dryer shell, the circular sealing cover and the shell, the heat circulation structure is used to circulate heat, and the heat circulation structure comprises a water vapor separator, a connecting pipe, a floating filter screen, a circulation curved pipe, an anti-blocking structure, a drain pipe and a water collecting tank.

[0006] Preferably, a reinforcement mechanism is provided on the sealing cylinder, and the reinforcement structure consists of a reinforcement plate and a connecting frame. Two groups of reinforcement plates distributed on the left and right are fixedly installed on the outer wall of the sealing cylinder. Both groups of reinforcement plates are fixedly installed on the front and rear inner walls of the dryer shell, and the connecting frame is fixedly installed between the outer wall of the sealing cylinder and the inner top of the dryer shell.

[0007] Preferably, a mounting retaining ring is fixedly installed on the inner wall of the sealing cylinder, an annular convex ring is fixedly installed on the outer wall of the breathable drum, an annular mounting plate is slidably sleeved on the annular convex ring, more than eight groups of balls equidistantly distributed in a ring are movably installed on the inner wall of the annular mounting plate, the balls are in contact with the outer wall of the breathable drum, a screw is provided on the front side of the annular mounting plate, one end of the screw passes through the annular mounting plate and is threadedly connected to the mounting retaining ring, a circular limit seat is fixedly installed on the inner wall of the rear side of the sealing cylinder, and the breathable drum is inserted in the circular limit seat.

[0008] Preferably, a circular opening is provided on the sealing cylinder, a circular block is fixedly installed on the rear side of the breathable roller, the circular block is located in the circular opening, a pulley is provided on the rear side of the sealing cylinder, a screw is fixedly installed on the rear side of the circular block, one end of the screw passes through the pulley and is threadedly sleeved with a nut, and circular grooves are provided on the breathable roller, the circular block and the pulley, and a hollow column is provided in the circular groove.

[0009] Preferably, a motor is fixedly installed on the rear side of the dryer shell, and a second pulley is rotatably installed on the rear inner wall of the dryer shell. The rotating shaft of the motor passes through the dryer shell and is fixedly connected to the second pulley. Belts are provided on the second pulley and the first pulley, and the first pulley and the second pulley are connected by belt transmission.

[0010] Preferably, a sealing cover is provided on the top of the circular sealing cover, two groups of hooks distributed front and back are fixedly installed on both sides of the sealing cover, buckles are fixedly installed on both sides of the circular sealing cover, the buckles overlap the electric heating network, a sealing gasket is fixedly installed on the inner top of the sealing cover, the sealing gasket is in contact with the top of the circular sealing cover, and a partition is fixedly installed on the inner wall of the circular sealing cover.

[0011] Preferably, a vertical pipe is fixedly installed on the output end of the induced draft fan, one end of the vertical pipe is fixedly connected to a rotary joint, an exhaust pipe is fixedly installed on the input end of the induced draft fan, the exhaust pipe extends to the interior of the shell, one end of the hollow column is rotatably connected to the rotary joint, a circular frame is fixedly installed on the inner wall of the shell, a dust filter is provided inside the shell, the dust filter is detachably installed on the circular frame, a sealing plate is detachably installed on the left side of the shell, a ventilation pipe is fixedly installed on the sealing plate, an air inlet is opened on the connecting plate, and the ventilation pipe is located inside the air inlet.

[0012] Preferably, baffles are fixedly mounted on both inner walls of the circular sealing cover, positioning posts are fixedly mounted on the front side of the baffles, and the floating object filter is snap-fitted and mounted on the positioning posts, so that the floating object filter is easy to disassemble and assemble.

[0013] Preferably, the water vapor separator is fixedly installed on the top of the connecting plate, the water vapor separator is located inside the round-shaped sealing cover, a positioning column groove is provided on the top of the dryer shell, the exhaust pipe is located in the positioning column groove, one end of the connecting pipe is fixedly connected to the exhaust pipe, the other end of the connecting pipe passes through the round-shaped sealing cover and is fixedly connected to the air inlet end of the water vapor separator, a vent is provided on the partition, the air outlet end of the water vapor separator is located in the vent, the circulating curved pipe is fixedly installed on the rear side of the round-shaped sealing cover, one end of the circulating curved pipe passes through the dryer shell and extends to the interior of the shell, the circulating curved pipe is located between the electric heating network and the dust filter, one end of the drain pipe passes through the round-shaped sealing cover and is fixedly connected to the water outlet end of the water vapor separator, the water collecting tank is fixedly installed on the inner bottom of the dryer shell, the other end of the drain pipe passes through the connecting plate and is fixedly connected to the water collecting tank, a drain pipe is fixedly installed on the outer wall of the water collecting tank, one end of the drain pipe extends to the left side of the connecting plate and is threadedly provided with a knob cover, so as to facilitate the discharge of water in the water collecting tank.

[0014] Preferably, the anti-blocking structure includes a connecting rod, a driving motor, a threaded column, a hexagonal nut and a brush strip, the connecting rod is rotatably installed on the rear inner wall of the circular sealing cover, the driving motor is fixedly installed on the rear side of the circular sealing cover, the rotary pull of the driving motor passes through the circular sealing cover and is fixedly connected to the connecting rod, one end of the connecting rod is fixedly connected to the threaded column, the floating object filter and the brush strip are both provided with round holes, one end of the threaded column passes through the round hole and is threadedly sleeved with a hexagonal nut, two groups of plug-in columns distributed on the left and right are fixedly installed on the rear side of the brush strip, two groups of slots distributed on the left and right are provided on the front side of the connecting rod, and the plug-in columns are inserted into the slots.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) The heat circulation device of the linen dryer, through the coordinated use of a water vapor separator, a connecting pipe, a floating filter, a circulating curved pipe, a connecting rod, a driving motor, a threaded column, a hexagonal nut, a brush bar, a drain pipe, a water collecting box and an exhaust pipe, can, on the one hand, facilitate the discharge of the waste gas carrying heat into the shell and re-add it to the breathable drum to dry the linens, thereby achieving the effect of heat circulation, which not only reduces the energy consumption required by the device, but also improves the thermal efficiency and shortens the time required for drying. On the other hand, it can separate the moisture and textile floating matter carried by the waste gas before it is discharged into the shell, which can not only prevent the moisture from re-entering the breathable drum to cause a decrease in the linen drying efficiency, but also prevent the floating matter from entering the induced draft fan and causing damage to it, and at the same time, it can brush the surface of the floating filter to prevent the filter from being blocked, thereby enhancing the reliability and practicality of the device.

[0017] (2) The heat circulation device of the linen dryer can filter the gas drawn in by the induced draft fan by setting a dust filter, thereby preventing dust impurities from entering the air permeable drum and contaminating the linens, thereby enhancing the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0019] Figure 1 A perspective view of the present invention;

[0020] Figure 2 It is a right side cutaway perspective view of the present invention;

[0021] Figure 3 is a rear perspective view of the present invention;

[0022] Figure 4 is a rear perspective view of the belt of the present invention;

[0023] Figure 5 It is a three-dimensional diagram of the sealing cylinder of the present invention;

[0024] Figure 6 is a three-dimensional diagram of the breathable drum of the present invention;

[0025] Figure 7 A three-dimensional diagram of the circular sealing cover of the present invention;

[0026] Figure 8 is a three-dimensional diagram of the floating object filter of the present invention;

[0027] Fig. 9 It is a top-view cutaway stereoscopic diagram of the electric heating network of the present invention;

[0028] Fig.10 For the present invention Figure 2 A magnified view of part A in FIG.

[0029] Fig.11 For the present invention Figure 2 A magnified view of part B in FIG.

[0030] Fig.12 For the present invention Figure 2 Enlarged view of section C in .

[0031] Figure numerals: 1, dryer housing; 2, connecting plate; 3, sealing cylinder; 4, breathable drum; 5, circular sealing cover; 6, heat circulation structure; 61, water vapor separator; 62, connecting pipe; 63, floating filter; 64, circulating curved pipe; 65, anti-blocking structure; 651, connecting rod; 652, driving motor; 653, threaded column; 654, hexagonal nut; 655, brush strip; 66, drain pipe; 67, water collecting box; 7, exhaust pipe; 8, induced draft fan; 9, vertical pipe; 10, rotary joint; 11, connecting frame; 12, round block; 13, leather Pulley one; 14. Screw; 15. Nut; 16. Hollow column; 17. Mounting retaining ring; 18. Annular convex ring; 19. Annular mounting plate; 20. Screw; 21. Circular limit seat; 22. Motor; 23. Pulley two; 24. Belt; 25. Exhaust pipe; 26. Shell; 27. Electric heating network; 28. Dust filter; 29. ​​Circular frame; 30. Sealing plate; 31. Ventilation pipe; 32. Drain pipe; 33. Sealing cover; 34. Guard bar; 35. Positioning column; 36. Partition; 37. Hook; 38. Buckle; 39. Drum cover; 40. Reinforcement plate. DETAILED DESCRIPTION

[0032] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0033] See also Figure 1-12The present invention provides a technical solution: a heat circulation device for a linen dryer, comprising a dryer housing 1, a sealing cylinder 3 and a heat circulation structure 6, a connecting plate 2 is detachably installed on the left side of the dryer housing 1, a circular sealing cover 5 is fixedly installed on the top of the dryer housing 1, an induced draft fan 8 is fixedly installed on the inner wall of the rear side of the dryer housing 1, a motor 22 is fixedly installed on the rear side of the dryer housing 1, a housing 26 is fixedly installed on the inner bottom of the dryer housing 1, an electric heating network 27 is fixedly installed on the inner wall of the housing 26, and the dryer A drum cover 39 is provided on the front side of the shell 1, the sealing cylinder 3 is fixedly installed on the front inner wall of the dryer shell 1, a breathable drum 4 is provided inside the sealing cylinder 3, an exhaust pipe 7 is fixedly installed on the top of the sealing cylinder 3, a heat circulation structure 6 is provided on the dryer shell 1, the round-shaped sealing cover 5 and the shell 26, the heat circulation structure 6 is used to circulate heat, and the heat circulation structure 6 includes a water vapor separator 61, a connecting pipe 62, a floating object filter 63, a circulation curved pipe 64, an anti-blocking structure 65, a drain pipe 66 and a water collecting tank 67.

[0034] A reinforcement mechanism is provided on the sealing cylinder 3, and the reinforcement structure consists of a reinforcement plate 40 and a connecting frame 11. Two groups of reinforcement plates 40 distributed in the left and right are fixedly installed on the outer wall of the sealing cylinder 3. The two groups of reinforcement plates 40 are fixedly installed on the front and rear inner walls of the dryer housing 1. The connecting frame 11 is fixedly installed between the outer wall of the sealing cylinder 3 and the inner top of the dryer housing 1. A mounting retaining ring 17 is fixedly installed on the inner wall of the sealing cylinder 3. An annular convex ring 18 is fixedly installed on the outer wall of the breathable drum 4. An annular mounting plate 19 is slidably sleeved on the annular convex ring 18. More than eight groups of balls distributed in annular shapes and equidistantly are movably installed on the inner wall of the annular mounting plate 19. The balls are in contact with the outer wall of the breathable drum 4. Screws 2 are provided on the front side of the annular mounting plate 19. 0, one end of the screw 20 passes through the annular mounting plate 19 and is threadedly connected with the mounting retaining ring 17, a circular limiting seat 21 is fixedly installed on the inner wall of the rear side of the sealing cylinder 3, the air-permeable drum 4 is inserted in the circular limiting seat 21, a circular opening is opened on the sealing cylinder 3, a circular block 12 is fixedly installed on the rear side of the air-permeable drum 4, the circular block 12 is located in the circular opening, a pulley 13 is arranged on the rear side of the sealing cylinder 3, a screw 14 is fixedly installed on the rear side of the circular block 12, one end of the screw 14 passes through the pulley 13 and a nut 15 is threadedly sleeved, the air-permeable drum 4, the circular block 12 and the pulley 13 are all provided with circular grooves, and a hollow column 16 is arranged in the circular groove, a motor 22 is fixedly installed on the rear side of the dryer housing 1, and the inner wall of the rear side of the dryer housing 1 A pulley 23 is rotatably installed, the rotating shaft of the motor 22 passes through the dryer housing 1 and is fixedly connected to the pulley 23, the pulley 23 and the pulley 1 13 are sleeved with a belt 24, the pulley 1 13 and the pulley 23 are connected through the belt 24, a sealing cover 33 is arranged on the top of the round-shaped sealing cover 5, two groups of hooks 37 distributed front and back are fixedly installed on both sides of the sealing cover 33, buckles 38 are fixedly installed on both sides of the round-shaped sealing cover 5, the buckles 38 overlap the electric heating network 27, a sealing gasket is fixedly installed on the inner top of the sealing cover 33, the sealing gasket is in contact with the top of the round-shaped sealing cover 5, a partition 36 is fixedly installed on the inner wall of the round-shaped sealing cover 5, a vertical pipe 9 is fixedly installed on the output end of the induced draft fan 8, and the vertical pipe 9 One end of the hollow column 16 is fixedly connected with a rotary joint 10, an input end of the induced draft fan 8 is fixedly installed with an exhaust pipe 25, the exhaust pipe 25 extends to the inside of the shell 26, one end of the hollow column 16 is rotatably connected to the rotary joint 10, a circular frame 29 is fixedly installed on the inner wall of the shell 26, a dust filter 28 is arranged inside the shell 26, and the dust filter 28 is detachably installed on the circular frame 29, a sealing plate 30 is detachably installed on the left side of the shell 26, a ventilation pipe 31 is fixedly installed on the sealing plate 30, an air inlet is opened on the connecting plate 2, the ventilation pipe 31 is located in the air inlet, baffles 34 are fixedly installed on the inner walls of both sides of the circular sealing cover 5, a positioning column 35 is fixedly installed on the front side of the baffle 34, and the floating object filter 63 is snap-fitted and installed on the positioning column 35.

[0035] The water vapor separator 61 is fixedly installed on the top of the connecting plate 2. The water vapor separator 61 is located inside the round-shaped sealing cover 5. A positioning column groove is provided on the top of the dryer shell 1. The exhaust pipe 7 is located in the positioning column groove. One end of the connecting pipe 62 is fixedly connected to the exhaust pipe 7. The other end of the connecting pipe 62 passes through the round-shaped sealing cover 5 and is fixedly connected to the air inlet end of the water vapor separator 61. A vent is provided on the partition 36. The air outlet end of the water vapor separator 61 is located in the vent. The circulating curved pipe 64 is fixedly installed on the rear side of the round-shaped sealing cover 5. One end of the circulating curved pipe 64 passes through the dryer shell 1 and extends to the inside of the shell 26. The circulating curved pipe 64 is located between the electric heating network 27 and the dust filter 28. One end of the drain pipe 66 passes through the round-shaped sealing cover 5 and is connected to the water vapor separator 61. The water outlet is fixedly connected, the water collecting tank 67 is fixedly installed on the inner bottom of the dryer shell 1, the other end of the drain pipe 66 passes through the connecting plate 2 and is fixedly connected to the water collecting tank 67, the outer wall of the water collecting tank 67 is fixedly installed with a discharge pipe 32, one end of the discharge pipe 32 extends to the left side of the connecting plate 2 and is threadedly sleeved with a knob cover, the anti-blocking structure 65 includes a connecting rod 651, a driving motor 652, a threaded column 653, a hexagonal nut 654 and a brush strip 655, the connecting rod 651 is rotatably installed on the rear inner wall of the circular sealing cover 5, the driving motor 652 is fixedly installed on the rear side of the circular sealing cover 5, the rotation of the driving motor 652 passes through the circular sealing cover 5 and is fixedly connected to the connecting rod 651, one end of the connecting rod 651 is fixedly connected to the threaded column 653, and the floating filter There are round holes on the net 63 and the brush strip 655, one end of the threaded column 653 passes through the round hole and is threadedly sleeved with a hexagonal nut 654, two groups of plug columns distributed on the left and right are fixedly installed on the rear side of the brush strip 655, and two groups of slots distributed on the left and right are opened on the front side of the connecting rod 651, and the plug columns are inserted into the slots. The drum cover 39 is opened and the linens are placed in the breathable drum 4, and then the heating of the electric heating net 27 and the start of the induced draft fan 8 are controlled, and the induced draft fan 8 draws air into the shell 26 through the exhaust pipe 25. During the process, the dust filter 28 automatically filters and intercepts the dust in the gas. At the same time, the gas carries heat when passing through the electric heating net 27, and then transmits gas to the hollow column 16 through the vertical pipe 9 and the rotary joint 10, and then the hot air is added to the breathable drum 4 and the linens are sucked. Drying, at the same time, control the motor 22 to drive the rotation of the pulley 23, and then drive the rotation of the pulley 1 13 through the belt 24, and then drive the rotation of the breathable drum 4 through the circular block 12, and at the same time, the moisture in the breathable drum 4 is discharged to the outside through the exhaust pipe 7, and then added to the water vapor separator 61 through the connecting pipe 62, control the start of the water vapor separator 61 and separate the liquid in the gas, and then the liquid flows into the water collecting tank 67 through the drain pipe 66 for collection, and the gas separated from the liquid is added to the circular sealing cover 5, and then automatically filtered by the floating filter 63 to filter the textile floating objects, and at the same time control the driving motor 652 to drive the rotation of the connecting rod 651, and then drive the rotation of the brush strip 655, and the brush strip 655 automatically cleans the surface of the floating filter 63,Then the gas is added to the shell 26 through the circulation curved pipe 64. On the one hand, it is convenient to discharge the waste gas carrying heat into the shell 26 and re-add it to the breathable drum 4 to dry the linens, achieving the effect of heat circulation, which not only reduces the energy consumption required by the device, but also improves the thermal efficiency and shortens the time required for drying. On the other hand, it can separate the moisture and textile floating objects carried by the waste gas before it is discharged into the shell 26, which can not only prevent moisture from re-entering the breathable drum 4 to reduce the drying efficiency of the linens, but also prevent floating objects from entering the induced draft fan 8 and causing damage to it. At the same time, it can brush the surface of the floating object filter 63 to prevent the phenomenon of filter blockage, thereby enhancing the reliability and practicality of the device.

[0036] Working principle: open the drum cover 39 and place the linen in the breathable drum 4, then control the heating of the electric heating network 27 and the start of the induced draft fan 8, and the induced draft fan 8 sucks air into the shell 26 through the exhaust pipe 25. During the process, the dust filter 28 automatically filters and intercepts the dust in the gas. At the same time, the gas carries heat when passing through the electric heating network 27, and then transmits the gas to the hollow column 16 through the vertical pipe 9 and the rotary joint 10. Then the hot air is added to the breathable drum 4 and dries the linen. At the same time, the motor 22 is controlled to drive the rotation of the pulley 2 23, and then the belt 24 drives the rotation of the pulley 1 13, and then the round block 12 drives the breathable drum 4. The moisture in the breathable drum 4 is discharged to the outside through the exhaust pipe 7, and then added to the water vapor separator 61 through the connecting pipe 62, the start of the water vapor separator 61 is controlled to separate the liquid in the gas, and then the liquid flows into the water collecting tank 67 through the drain pipe 66 for collection, and the gas separated from the liquid is added to the circular sealing cover 5, and then automatically filtered by the floating object filter 63 for textile floating objects, and at the same time the driving motor 652 is controlled to drive the rotation of the connecting rod 651, and then drive the rotation of the brush strip 655, and the brush strip 655 automatically cleans the surface of the floating object filter 63, and then the gas is added to the shell 26 through the circulating curved pipe 64.

[0037] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A heat circulation device for a linen dryer, characterized in that: include: A dryer housing (1) is provided with a connecting plate (2) detachably mounted on the left side thereof, a circular sealing cover (5) is fixedly mounted on the top of the dryer housing (1), an induced draft fan (8) is fixedly mounted on the inner wall of the rear side of the dryer housing (1), a motor (22) is fixedly mounted on the rear side of the dryer housing (1), a housing (26) is fixedly mounted on the inner bottom of the dryer housing (1), an electric heating network (27) is fixedly mounted on the inner wall of the housing (26), and a drum cover (39) is arranged on the front side of the dryer housing (1); A sealing cylinder (3) is fixedly mounted on the front inner wall of the dryer housing (1), a breathable roller (4) is arranged inside the sealing cylinder (3), and an exhaust pipe (7) is fixedly mounted on the top of the sealing cylinder (3); A heat circulation structure (6) is arranged on the dryer housing (1), the round-shaped sealing cover (5) and the housing (26). The heat circulation structure (6) is used to circulate heat. The heat circulation structure (6) includes a water vapor separator (61), a connecting pipe (62), a floating object filter (63), a circulation curved pipe (64), an anti-blocking structure (65), a drain pipe (66) and a water collecting tank (67).

2. The heat circulation device for a linen dryer according to claim 1, characterized in that: The sealing cylinder (3) is provided with a reinforcement mechanism, the reinforcement structure consisting of a reinforcement plate (40) and a connecting frame (11), the outer wall of the sealing cylinder (3) is fixedly mounted with two groups of reinforcement plates (40) distributed on the left and right, the two groups of reinforcement plates (40) are fixedly mounted on the front and rear inner walls of the dryer housing (1), and the connecting frame (11) is fixedly mounted between the outer wall of the sealing cylinder (3) and the inner top of the dryer housing (1).

3. A heat circulation device for a linen dryer according to claim 2, characterized in that: The inner wall of the sealing cylinder (3) is fixedly mounted with a mounting retaining ring (17), the outer wall of the breathable roller (4) is fixedly mounted with an annular convex ring (18), a sliding sleeve of an annular mounting plate (19) is provided on the annular convex ring (18), the inner wall of the annular mounting plate (19) is movably mounted with more than eight groups of balls which are equidistantly distributed in an annular shape, the balls are in contact with the outer wall of the breathable roller (4), a screw (20) is provided on the front side of the annular mounting plate (19), one end of the screw (20) passes through the annular mounting plate (19) and is threadedly connected with the mounting retaining ring (17), a circular limiting seat (21) is fixedly mounted on the inner wall of the rear side of the sealing cylinder (3), and the breathable roller (4) is inserted into the circular limiting seat (21).

4. The heat circulation device for a linen dryer according to claim 3, characterized in that: The sealing cylinder (3) is provided with a circular opening, a circular block (12) is fixedly installed on the rear side of the air-permeable roller (4), the circular block (12) is located in the circular opening, a belt pulley (13) is arranged on the rear side of the sealing cylinder (3), a screw (14) is fixedly installed on the rear side of the circular block (12), one end of the screw (14) passes through the belt pulley (13) and is threadedly sleeved with a nut (15), the air-permeable roller (4), the circular block (12) and the belt pulley (13) are all provided with circular grooves, and a hollow column (16) is arranged in the circular groove.

5. The heat circulation device for a linen dryer according to claim 4, characterized in that: A motor (22) is fixedly mounted on the rear side of the dryer housing (1); a second pulley (23) is rotatably mounted on the inner wall of the rear side of the dryer housing (1); a rotating shaft of the motor (22) passes through the dryer housing (1) and is fixedly connected to the second pulley (23); a belt (24) is sleeved on the second pulley (23) and the first pulley (13); the first pulley (13) and the second pulley (23) are connected in transmission via the belt (24).

6. A heat circulation device for a linen dryer according to claim 5, characterized in that: A sealing cover (33) is arranged on the top of the circular sealing cover (5), two groups of hooks (37) are fixedly installed on both sides of the sealing cover (33) and are distributed in the front and back directions, buckles (38) are fixedly installed on both sides of the circular sealing cover (5), the buckles (38) overlap the electric heating network (27), a sealing gasket is fixedly installed on the inner top of the sealing cover (33), the sealing gasket is in contact with the top of the circular sealing cover (5), and a partition (36) is fixedly installed on the inner wall of the circular sealing cover (5).

7. The heat circulation device for a linen dryer according to claim 6, characterized in that: A vertical pipe (9) is fixedly mounted on the output end of the induced draft fan (8), one end of which is fixedly connected to a rotary joint (10), an exhaust pipe (25) is fixedly mounted on the input end of the induced draft fan (8), the exhaust pipe (25) extends to the interior of the shell (26), one end of the hollow column (16) is rotatably connected to the rotary joint (10), a circular frame (29) is fixedly mounted on the inner wall of the shell (26), a dust filter (28) is arranged inside the shell (26), the dust filter (28) is detachably mounted on the circular frame (29), a sealing plate (30) is detachably mounted on the left side of the shell (26), a ventilation pipe (31) is fixedly mounted on the sealing plate (30), an air inlet is opened on the connecting plate (2), and the ventilation pipe (31) is located inside the air inlet.

8. The heat circulation device for a linen dryer according to claim 7, characterized in that: The inner walls of both sides of the circular sealing cover (5) are fixedly mounted with blocking strips (34), the front side of the blocking strips (34) is fixedly mounted with positioning posts (35), and the floating object filter (63) is snap-fitted and mounted on the positioning posts (35).

9. The heat circulation device for a linen dryer according to claim 8, characterized in that: The water vapor separator (61) is fixedly mounted on the top of the connecting plate (2). The water vapor separator (61) is located inside the round-shaped sealing cover (5). A positioning column groove is provided on the top of the dryer housing (1). The exhaust pipe (7) is located in the positioning column groove. One end of the connecting pipe (62) is fixedly connected to the exhaust pipe (7). The other end of the connecting pipe (62) passes through the round-shaped sealing cover (5) and is fixedly connected to the air inlet end of the water vapor separator (61). A vent is provided on the partition (36). The air outlet end of the water vapor separator (61) is located in the vent. The circulating curved pipe (64) is fixedly mounted on the rear side of the round-shaped sealing cover (5). The circulating curved pipe (64) ) passes through the dryer housing (1) and extends to the interior of the housing (26); the circulating curved pipe (64) is located between the electric heating network (27) and the dust filter (28); one end of the drain pipe (66) passes through the round-shaped sealing cover (5) and is fixedly connected to the water outlet end of the water vapor separator (61); the water collecting box (67) is fixedly installed on the inner bottom of the dryer housing (1); the other end of the drain pipe (66) passes through the connecting plate (2) and is fixedly connected to the water collecting box (67); a drain pipe (32) is fixedly installed on the outer wall of the water collecting box (67); one end of the drain pipe (32) extends to the left side of the connecting plate (2) and is threadedly sleeved with a knob cover.

10. The heat circulation device for a linen dryer according to claim 9, characterized in that: The anti-blocking structure (65) comprises a connecting rod (651), a driving motor (652), a threaded column (653), a hexagonal nut (654) and a brush strip (655). The connecting rod (651) is rotatably mounted on the inner wall of the rear side of the circular sealing cover (5). The driving motor (652) is fixedly mounted on the rear side of the circular sealing cover (5). The rotation of the driving motor (652) passes through the circular sealing cover (5) and is fixedly connected to the connecting rod (651). One end of the connecting rod (651) is fixedly connected to the threaded column (653). Circular holes are provided on the floating object filter (63) and the brush strip (655). One end of the threaded column (653) passes through the circular hole and is threadedly sleeved with a hexagonal nut (654). Two groups of plug-in columns distributed on the left and right are fixedly mounted on the rear side of the brush strip (655). Two groups of slots distributed on the left and right are provided on the front side of the connecting rod (651). The plug-in columns are inserted into the slots.

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