Double-cone rotary vacuum dryer

Abstract

The utility model discloses a double-cone rotary vacuum dryer, which relates to the technical field of dryers and comprises a bin body, and two sides of the bin body are respectively and rotatably connected with a support seat I and a support seat II; the side, close to the first supporting base, of the bin body is fixedly connected with the backflow mechanism and the conveying mechanism, and the side, close to the second supporting base, of the bin body is fixedly connected with the vacuum suction assembly. A driving mechanism is arranged in the supporting seat II and is in transmission connection with the bin body; the threaded handle is screwed to enable the sealing cover to be away from the opening of the outer shell, materials needing to be dried are placed into the inner shell through the opening of the outer shell, and finally the sealing cover is closed to be tightly attached to the opening of the outer shell. By means of flowing heat sources such as steam, hot water or heat conduction oil, the stability of the temperature in the inner shell can be guaranteed, the interior of the inner shell can be kept in a high-temperature state for a long time, heating work cannot be interrupted easily, drying work of materials can be conducted stably for a long time, the drying efficiency is improved, and drying energy loss is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of dryers, in particular to a double-cone rotary vacuum dryer. Background Technique

[0002] A dryer is a device used to remove moisture or other volatile liquid components from materials, and is widely used in many fields such as chemical industry, food, pharmaceutical, agriculture, mining, etc. to dry various materials, such as chemical raw materials, food, drugs, agricultural products, ores, etc.; there are many types of dryers, including spray dryers, fluidized bed dryers, freeze dryers, drum dryers, and vacuum dryers, etc., and different dryers are suitable for different scenarios.

[0003] There are many types of dryers. Taking the vacuum dryer as an example, vacuum dryers are widely used in the drying work of industries such as pharmaceuticals, chemicals, food, dyes, etc.; Chinese Patent Publication No. CN 205940001 U discloses a double-cone rotary vacuum dryer, which includes a frame, a hollow shaft arranged on the frame through bearings, a rotary cylinder fixedly connected to one end of the hollow shaft, a vacuum filter arranged inside the rotary cylinder, and a vacuum tube arranged inside the hollow shaft. One end of the vacuum tube penetrates through the side wall of the rotary cylinder and is communicated with the vacuum filter, and the other end extends outside the hollow shaft and is connected to a vacuum pump. A sealed connection is provided between the end of the hollow shaft far from the rotary cylinder and the vacuum tube. The rotary cylinder includes an inner shell, an outer shell, and a heating plate arranged between the inner shell and the outer shell.

[0004] For the above double-cone rotary vacuum dryer, the high temperature generated by the heating plate between the inner shell and the outer shell is used to heat the internal space of the inner shell, so as to dry the materials at high temperature; however, the heating plate of the above double-cone rotary vacuum dryer operates by electricity. When the heating plate fails or the wire supplying power to the heating plate fails, the heating plate cannot generate high temperature normally, and the inner shell and the outer shell are fixedly connected, and the heating plate cannot be taken out, making it difficult to repair the heating plate and seriously affecting the normal progress of the material drying work. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a double-cone rotary vacuum dryer, with a cavity provided between the outer shell and the inner shell. A transportation mechanism is used to transport steam or hot water or heat-conducting oil into the cavity, so as to diffuse the heat to the inside of the inner shell, and a reflux mechanism is used to make the steam or hot water or heat-conducting oil form a flowing cycle to ensure the stability of the temperature and be able to maintain a high temperature for a long time without damage, so as to solve the technical problems put forward in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A double-cone rotary vacuum dryer includes a silo body, and both sides of the silo body are rotatably connected to a first support seat and a second support seat respectively; one side of the silo body close to the first support seat is fixedly connected to a reflux mechanism and a transportation mechanism, and one side of the silo body close to the second support seat is fixedly connected to a vacuum suction component; a driving mechanism is arranged inside the second support seat, and the driving mechanism is in transmission connection with the silo body; a controller is embedded on the second support seat;

[0008] The silo body includes an outer shell, the inner side of the outer shell is fixedly connected to an inner shell, and a cavity is arranged between the outer shell and the inner shell; both ends of the outer shell are provided with openings, and both openings are communicated with the inside of the inner shell; a sealing cover is arranged at one opening of the outer shell, and a sealing valve is fixedly connected to the other opening; connecting cylinders are welded on both sides of the outer shell, and one of the connecting cylinders is communicated with the cavity, and the other connecting cylinder is communicated with the inside of the inner shell;

[0009] The transportation mechanism includes a transportation pipe, one end of the transportation pipe is fixedly connected to one end of a tee through a second joint, and the end of the connecting cylinder communicated with the cavity away from the cavity is rotatably connected to the tee through a first rotary joint; the reflux mechanism includes a reflux pipe, and one end of the reflux pipe is fixedly connected to the tee through a first joint; the vacuum suction component includes an absorption bin, the absorption bin is located inside the inner shell, and one end of the absorption bin is welded to a connecting pipe; the end of the connecting pipe away from the absorption bin is rotatably connected to a four-way valve through a second rotary joint.

[0010] As a further technical solution of the present utility model, a plurality of through grooves are uniformly arranged on the absorption bin, and the space inside the absorption bin is communicated with the inside of the inner shell through the plurality of through grooves; the connecting pipe is located inside the connecting cylinder far from the transportation pipe among the two connecting cylinders and is fixedly connected to the connecting cylinder; a rotary handle is threadedly connected to the end of the four-way valve away from the connecting pipe, a pressure gauge is installed on the top of the four-way valve, the bottom of the four-way valve is fixedly connected to a hose, and the end of the hose away from the four-way valve is fixedly connected to a vacuum pump.

[0011] As a further technical solution of the present utility model, the two connecting cylinders are respectively rotatably connected to two bearing seats, and the two bearing seats are fixedly connected to the support plates inside the first support seat and the second support seat; reinforcing collar rings are fixedly connected to the outer sides of the two ends of the two connecting cylinders close to the outer shell, and both reinforcing collar rings are welded to the outer side of the outer shell; the middle of the side of the sealing cover away from the outer shell is fixedly connected to a threaded handle, the outer side of the threaded handle is threadedly connected to a connecting frame, and the connecting frame is welded to the outer side of the outer shell.

[0012] As a further technical solution of the present utility model, a first gear and a first pulley are fixedly connected to the outer side of one of the two connecting cylinders; the tee, the first rotary joint and the first joint are all located inside the first support seat; the driving mechanism, the second rotary joint, the first gear and the first pulley are all located inside the second support seat; the bottoms of the first support seat and the second support seat are both welded to the base.

[0013] As a further technical solution of the utility model, the driving mechanism includes a motor, the output shaft of the motor is fixedly connected to the input end of a speed reducer, and the output end of the speed reducer is fixedly connected with a second gear and a second pulley; the second gear is in transmission connection with the first gear through a chain, and the second pulley is in transmission connection with the first pulley through a belt.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] 1. For the utility model, the bin body is preheated first. The conveying pipe is fixedly connected to the heat source storage device, and the heat source can be steam, hot water or heat-conducting oil; the heat source flows into the connecting cylinder connected to the tee through the conveying pipe and the tee, and enters the cavity through the connecting cylinder, and the heat contained in the heat source is dissipated into the inner shell, thereby preheating the inside of the inner shell; then, by turning the threaded handle, the sealing cover is moved away from the opening of the outer shell, and the material to be dried is placed into the inner shell through the opening of the outer shell, and finally the sealing cover is closed to make the sealing cover fit tightly with the opening of the outer shell; by using a flowing heat source such as steam, hot water or heat-conducting oil, not only can the temperature stability in the inner shell be ensured, but also the inner shell can maintain a high temperature state for a long time, and the heating work is not easily interrupted, so that the drying work of the material can be carried out stably for a long time, improving the drying efficiency and reducing the drying energy loss.

[0016] 2. For the utility model, the air in the inner shell is sucked out through the absorption bin, the connecting pipe and the hose by the negative pressure generated by the vacuum pump, so as to form a vacuum environment in the inner shell. The vacuum environment can accelerate the heat dissipation speed of the high temperature, so that the temperature in the inner shell rises rapidly, and at the same time ensure the temperature balance at each position in the inner shell, so as to ensure the speed and effect of material drying; the motor cooperates with the speed reducer to drive the second gear and the second pulley to rotate, and the second pulley and the second gear drive the first pulley and the first gear to rotate through the belt and the chain respectively, so as to make the connecting cylinder fixedly connected to the first pulley and the first gear rotate, and finally realize the uniform rotation of the outer shell and the inner shell; during the rotation of the inner shell, the material inside it can be driven to roll repeatedly, thereby increasing the drying speed of the material.

[0017] 3. For the utility model, the relatively wet material contains a large amount of moisture. Under the action of high temperature, the moisture in the material will become water vapor. The vacuum pump operates to make the absorption bin generate negative pressure suction, and the water vapor in the inner shell is sucked into the absorption bin through the through groove of the absorption bin, and the water vapor is transported away through the connecting pipe, the four-way valve and the hose, ensuring that the inside of the inner shell is always in a dry state; during the rotation of the inner shell and the outer shell, the two connecting cylinders and the connecting pipe rotate synchronously. The first rotary joint can prevent the conveying pipe from being driven to rotate by the connecting cylinder, and the second rotary joint can prevent the four-way valve from being driven to rotate by the connecting pipe, so as to ensure that the heat source can normally circulate to heat the inner shell and the absorption bin can normally generate negative pressure suction. Description of the Drawings

[0018] Figure 1 is a three-dimensional structural schematic diagram of the present utility model.

[0019] Figure 2 In the present utility model Figure 1 is another perspective view.

[0020] Figure 3 In the present utility model Figure 1 is a top view.

[0021] Figure 4 In the present utility model Figure 3 is a sectional view taken along line A-A.

[0022] Figure 5 In the present utility model Figure 1 is a partial structural schematic diagram.

[0023] Figure 6 In the present utility model Figure 5 is a partial structural schematic diagram.

[0024] Figure 7 In the present utility model Figure 6 is an internal structural schematic diagram.

[0025] Figure 8 In the present utility model Figure 7 is a partial enlarged view.

[0026] Figure 9 In the present utility model Figure 4 is a partial enlarged view.

[0027] Figure 10 In the present utility model Figure 5 is a partial enlarged view.

[0028] In the figure: 1 - bin body, 2 - first support base, 3 - second support base, 4 - reflux mechanism, 5 - transportation mechanism, 6 - vacuum suction component, 7 - controller, 8 - base, 9 - drive mechanism;

[0029] 11 - outer shell, 12 - inner shell, 13 - cavity, 14 - reinforcing collar, 15 - connecting tube, 16 - bearing seat, 17 - connecting frame, 18 - sealing cover, 19 - threaded handle, 10 - sealing valve, 110 - first gear, 111 - first pulley, 41 - reflux pipe, 42 - first joint, 51 - transportation pipe, 52 - second joint, 53 - tee, 54 - first rotary joint, 61 - hose, 62 - four-way valve, 63 - pressure gauge, 64 - second rotary joint, 65 - connecting pipe, 66 - absorption bin, 91 - reducer, 92 - motor, 93 - second gear, 94 - second pulley, 95 - chain, 96 - belt. Detailed implementation manners

[0030] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0031] Please refer to Figures 1 - 10 In the embodiments of the present utility model, it includes a bin body 1, and both sides of the bin body 1 are rotatably connected to a first support seat 2 and a second support seat 3 respectively; one side of the bin body 1 close to the first support seat 2 is fixedly connected to a reflux mechanism 4 and a transportation mechanism 5, and one side of the bin body 1 close to the second support seat 3 is fixedly connected to a vacuum suction component 6; a driving mechanism 9 is arranged in the second support seat 3, and the driving mechanism 9 is in transmission connection with the bin body 1; a controller 7 is embedded on the second support seat 3;

[0032] The bin body 1 includes an outer shell 11, the inner side of the outer shell 11 is fixedly connected to an inner shell 12, and a cavity 13 is arranged between the outer shell 11 and the inner shell 12; both ends of the outer shell 11 are provided with openings, and both openings are communicated with the inside of the inner shell 12; one of the openings of the outer shell 11 is provided with a sealing cover 18, and the other opening is fixedly connected to a sealing valve 10; both sides of the outer shell 11 are welded with connecting cylinders 15, and one of the connecting cylinders 15 is communicated with the cavity 13, and the other connecting cylinder 15 is communicated with the inside of the inner shell 12;

[0033] The transportation mechanism 5 includes a transportation pipe 51, one end of the transportation pipe 51 is fixedly connected to one end of a tee 53 through a second joint 52, and one end of the connecting cylinder 15 communicated with the cavity 13 away from the cavity 13 is rotatably connected to the tee 53 through a first rotary joint 54; the reflux mechanism 4 includes a reflux pipe 41, one end of the reflux pipe 41 is fixedly connected to the tee 53 through a first joint 42; the vacuum suction component 6 includes a suction bin 66, the suction bin 66 is located inside the inner shell 12, and one end of the suction bin 66 is welded to a connecting pipe 65; one end of the connecting pipe 65 away from the suction bin 66 is rotatably connected to a four-way valve 62 through a second rotary joint 64.

[0034] By adopting the above technical solution, the silo body 1 is preheated first. The transport pipe 51 is fixedly connected to the heat source storage device, and the heat source can be steam, hot water or heat-conducting oil. The heat source flows into the connecting cylinder 15 connected to the three-way joint 53 through the transport pipe 51 and the three-way joint 53, and enters the cavity 13 through the connecting cylinder 15. The heat contained in the heat source is dissipated into the inner shell 12, so as to preheat the inside of the inner shell 12. Then, by turning the threaded handle 19, the sealing cover 18 is moved away from the opening of the outer shell 11, and the material to be dried is placed into the inner shell 12 through the opening of the outer shell 11. Finally, the sealing cover 18 is closed so that the sealing cover 18 fits tightly with the opening of the outer shell 11. By using a flowing heat source such as steam, hot water or heat-conducting oil, not only can the temperature stability in the inner shell 12 be ensured, but also the inner shell 12 can maintain a high temperature state for a long time, and the heating work is not easily interrupted, so that the drying work of the material can be carried out stably for a long time.

[0035] In this embodiment, a plurality of through grooves are evenly arranged on the absorption bin 66, and the space inside the absorption bin 66 is communicated with the inside of the inner shell 12 through the plurality of through grooves. The connecting pipe 65 is located inside the connecting cylinder 15 far from the transport pipe 51 among the two connecting cylinders 15 and is fixedly connected to the connecting cylinder 15. One end of the four-way valve 62 far from the connecting pipe 65 is threadedly connected with a rotating handle. A pressure gauge 63 is installed on the top of the four-way valve 62. The bottom of the four-way valve 62 is fixedly connected to the hose 61, and one end of the hose 61 far from the four-way valve 62 is fixedly connected to a vacuum pump.

[0036] The two connecting cylinders 15 are respectively rotatably connected to two bearing seats 16, and the two bearing seats 16 are fixedly connected to the support plates on the inner sides of the support base one 2 and the support base two 3. Reinforcing collar rings 14 are fixedly connected to the outer sides of the two ends of the two connecting cylinders 15 close to the outer shell 11, and the two reinforcing collar rings 14 are welded to the outer side of the outer shell 11. The middle of the side of the sealing cover 18 far from the outer shell 11 is fixedly connected to the threaded handle 19, and the outer side of the threaded handle 19 is threadedly connected to the connecting frame 17, and the connecting frame 17 is welded to the outer side of the outer shell 11.

[0037] By adopting the above technical scheme, the negative pressure generated by the vacuum pump is used to suck the air in the inner shell 12 through the absorption bin 66, the connecting pipe 65 and the hose 61, so that a vacuum environment is formed in the inner shell 12. The vacuum environment can accelerate the dissipation speed of high temperature, so that the temperature in the inner shell 12 rises rapidly, while ensuring that the temperature at various positions in the inner shell 12 is balanced, thereby ensuring the speed and effect of material drying; the motor 92 cooperates with the reducer 91 to drive the gear 2 93 and the pulley 2 94 to rotate, and the pulley 2 94 and the gear 2 93 respectively drive the pulley 1 111 and the gear 1 110 to rotate through the belt 96 and the chain 95, so that the connecting cylinder 15 fixedly connected to the pulley 1 111 and the gear 1 110 rotates, and finally the outer shell 11 and the inner shell 12 rotate at a uniform speed; during the rotation of the inner shell 12, the material inside it can be driven to roll repeatedly, thereby increasing the drying speed of the material.

[0038] In this embodiment, a gear 110 and a pulley 111 are fixedly connected to the outer side of one of the two connecting tubes 15; the tee 53, the rotary joint 54 and the joint 42 are all located on the inner side of the support seat 12; the driving mechanism 9, the rotary joint 64, the gear 110 and the pulley 111 are all located on the inner side of the support seat 23; the bottoms of the support seat 12 and the support seat 23 are welded to the base 8;

[0039] The driving mechanism 9 includes a motor 92, the output shaft of which is fixedly connected to the input end of a reducer 91, and the output end of the reducer 91 is fixedly connected to a gear 2 93 and a pulley 2 94; the gear 2 93 is connected to a gear 1 10 through a chain 95, and the pulley 2 94 is connected to a pulley 1 111 through a belt 96.

[0040] By adopting the above technical solution, relatively moist materials contain a large amount of water. Under the action of high temperature, the water in the materials will turn into water vapor. The vacuum pump operates to generate negative pressure suction in the absorption bin 66, and the water vapor in the inner shell 12 is sucked into the absorption bin 66 through the through groove of the absorption bin 66, and the water vapor is transported away through the connecting pipe 65, the four-way valve 62 and the hose 61, so as to ensure that the interior of the inner shell 12 is always in a dry state; during the rotation of the inner shell 12 and the outer shell 11, the two connecting tubes 15 and the connecting tube 65 rotate synchronously, the rotating joint 1 54 can prevent the transport tube 51 from being driven to rotate by the connecting tube 15, and the rotating joint 2 64 can prevent the four-way valve 62 from being driven to rotate by the connecting tube 65, thereby ensuring that the heat source can circulate normally to heat the inner shell 12 and the absorption bin 66 can generate negative pressure suction normally.

[0041] The working principle of the present utility model is as follows: First, preheat the bin body 1. The transport pipe 51 is fixedly connected to the heat source storage device, and the heat source can be steam, hot water or heat-conducting oil. The heat source flows into the connecting cylinder 15 connected to the three-way joint 53 through the transport pipe 51 and the three-way joint 53, and enters the cavity 13 through the connecting cylinder 15. The heat contained in the heat source is dissipated into the inner shell 12, thereby preheating the inside of the inner shell 12. Then, turn the threaded handle 19 to move the sealing cover 18 away from the opening of the outer shell 11, and place the material to be dried into the inner shell 12 through the opening of the outer shell 11. Finally, close the sealing cover 18 to make the sealing cover 18 fit tightly with the opening of the outer shell 11. By using a flowing heat source such as steam, hot water or heat-conducting oil, not only can the temperature stability in the inner shell 12 be ensured, but also the inner shell 12 can maintain a high temperature state for a long time, and the heating work is not easily interrupted, enabling the drying work of the material to be carried out stably for a long time.

[0042] Use the negative pressure generated by the vacuum pump to suck out the air in the inner shell 12 through the absorption bin 66, the connecting pipe 65 and the hose 61, so as to create a vacuum environment in the inner shell 12. The vacuum environment can accelerate the heat dissipation speed, thereby quickly raising the temperature inside the inner shell 12, and at the same time ensuring the temperature balance at each position inside the inner shell 12, thus ensuring the speed and effect of material drying. The motor 92 cooperates with the speed reducer 91 to drive the second gear 93 and the second pulley 94 to rotate. The second pulley 94 and the second gear 93 drive the first pulley 111 and the first gear 110 to rotate through the belt 96 and the chain 95 respectively, so as to rotate the connecting cylinder 15 fixedly connected to the first pulley 111 and the first gear 110, and finally realize the uniform rotation of the outer shell 11 and the inner shell 12. During the rotation of the inner shell 12, it can drive the materials inside it to roll repeatedly, thereby increasing the drying speed of the materials.

[0043] The relatively wet materials contain a large amount of moisture. Under the action of high temperature, the moisture in the materials will turn into water vapor. The vacuum pump operates to generate negative pressure suction in the absorption bin 66, suck the water vapor in the inner shell 12 into the absorption bin 66 through the through slots of the absorption bin 66, and transport the water vapor away through the connecting pipe 65, the four-way valve 62 and the hose 61 to ensure that the inside of the inner shell 12 is always in a dry state. During the rotation of the inner shell 12 and the outer shell 11, the two connecting cylinders 15 and the connecting pipe 65 rotate synchronously. The first rotary joint 54 can prevent the transport pipe 51 from being driven to rotate by the connecting cylinder 15, and the second rotary joint 64 can prevent the four-way valve 62 from being driven to rotate by the connecting pipe 65, so as to ensure that the heat source can normally circulate to heat the inner shell 12 and the absorption bin 66 can normally generate negative pressure suction.

[0044] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A double cone rotary vacuum dryer, characterized in that: The invention comprises a bin body (1), the two sides of which are rotatably connected to a support seat 1 (2) and a support seat 2 (3) respectively; the side of the bin body (1) close to the support seat 1 (2) is fixedly connected to a reflux mechanism (4) and a transport mechanism (5), and the side of the bin body (1) close to the support seat 2 (3) is fixedly connected to a vacuum material suction assembly (6); a driving mechanism (9) is provided inside the support seat 2 (3), and the driving mechanism (9) is transmission-connected to the bin body (1); a controller (7) is embedded on the support seat 2 (3); The warehouse body (1) comprises an outer shell (11), the inner side of which is fixedly connected to an inner shell (12), and a cavity (13) is provided between the outer shell (11) and the inner shell (12); both ends of the outer shell (11) are provided with openings, and both openings are communicated with the interior of the inner shell (12); one of the openings of the outer shell (11) is provided with a sealing cover (18), and the other opening is fixedly connected to a sealing valve (10); connecting tubes (15) are welded on both sides of the outer shell (11), and one of the connecting tubes (15) is communicated with the cavity (13), and the other connecting tube (15) is communicated with the interior of the inner shell (12); The transport mechanism (5) comprises a transport pipe (51), one end of which is fixedly connected to one end of a tee (53) via a second joint (52), and one end of a connecting tube (15) communicating with the cavity (13) away from the cavity (13) is rotatably connected to the tee (53) via a first swivel joint (54); the reflux mechanism (4) comprises a reflux pipe (41), one end of which is fixedly connected to the tee (53) via a first joint (42); the vacuum suction assembly (6) comprises an absorption bin (66), the absorption bin (66) is located inside the inner shell (12), and one end of the absorption bin (66) is welded to a connecting pipe (65); and one end of the connecting pipe (65) away from the absorption bin (66) is rotatably connected to a four-way valve (62) via a second swivel joint (64).

2. The double cone rotary vacuum dryer according to claim 1, characterized in that: The absorption bin (66) is evenly provided with a plurality of through grooves, and the space inside the absorption bin (66) is connected to the interior of the inner shell (12) through the plurality of through grooves; the connecting pipe (65) is located inside the connecting tube (15) of the two connecting tubes (15) which is away from the transport tube (51) and is fixedly connected to the connecting tube (15); a rotating handle is threadedly connected to one end of the four-way valve (62) away from the connecting tube (65), a pressure gauge (63) is installed on the top of the four-way valve (62), the bottom of the four-way valve (62) is fixedly connected to a hose (61), and one end of the hose (61) away from the four-way valve (62) is fixedly connected to a vacuum pump.

3. The double-cone rotary vacuum dryer according to claim 2, characterized in that: The two connecting tubes (15) are rotatably connected to the two bearing seats (16) respectively, and the two bearing seats (16) are fixedly connected to the support plates inside the support seat 1 (2) and the support seat 2 (3); the outer sides of the two connecting tubes (15) close to the outer shell (11) are fixedly connected with reinforcement rings (14), and the two reinforcement rings (14) are welded to the outer side of the outer shell (11); the middle of the side of the sealing cover (18) away from the outer shell (11) is fixedly connected to the threaded handle (19), and the outer side of the threaded handle (19) is threadedly connected to the connecting frame (17), and the connecting frame (17) is welded to the outer side of the outer shell (11).

4. The double-cone rotary vacuum dryer according to claim 3, characterized in that: One of the two connecting tubes (15) is fixedly connected to a gear one (110) and a pulley one (111) on its outer side; the three-way connection (53), the rotary joint one (54) and the joint one (42) are all located on the inner side of the support seat one (2); the driving mechanism (9), the rotary joint two (64), the gear one (110) and the pulley one (111) are all located on the inner side of the support seat two (3); the bottoms of the support seat one (2) and the support seat two (3) are welded to the base (8).

5. The double-cone rotary vacuum dryer according to claim 4, characterized in that: The driving mechanism (9) comprises a motor (92), the output shaft of the motor (92) is fixedly connected to the input end of the reducer (91), and the output end of the reducer (91) is fixedly connected to a second gear (93) and a second pulley (94); the second gear (93) is transmission-connected to a first gear (110) via a chain (95), and the second pulley (94) is transmission-connected to a first pulley (111) via a belt (96).

Images