Rotary cylinder dryer

Abstract

The invention discloses a cylinder dryer which comprises a rack, a support, a main body, a lifting mechanism and a driving mechanism, the support is installed on the rack in an up-down swinging mode, the main body comprises a rotary cylinder rotatably installed on the support, the lifting mechanism is arranged on the rack and drives the support to swing up and down, and the driving mechanism is arranged on the support and drives the rotary cylinder to swing up and down. The rotary cylinder is driven to rotate relative to the support. In this way, the machine is used for rapidly evaporating moisture in the grains in a manner of scattering the grains through hot air circulation and continuous rotation, and the grain drying effect is achieved. According to the drying device, the lifting mechanism can drive the support to swing up and down to any rotation angle, so that the downward inclination angle of the channel is adaptively adjusted according to the type, humidity and the like of dried materials, the discharging speed and the drying time are adjusted, the up-down swing posture of the body can be more flexibly adjusted in the drying process, and the drying efficiency is improved. Therefore, different materials and drying requirements are met, and the adaptability and the use efficiency of the equipment are improved.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery and equipment, and in particular to a rotary drum dryer. Background Art

[0002] Grain often contains a high amount of moisture after harvest. If it is directly transported and stored without effective drying, it is very easy to cause the grain to mold and deteriorate, which in turn causes food safety problems. In traditional agricultural societies, farmers mostly use natural drying to deal with wet grain. Although this method is simple and easy to implement, it has many disadvantages. With the advancement of agricultural modernization, grain drying technology has developed rapidly. As an efficient and energy-saving grain drying equipment, rotary drum dryer has gradually replaced the traditional manual drying method and become an important tool in grain production and storage and transportation.

[0003] With the continuous advancement and innovation of science and technology, grain drying technology is also constantly developing and improving. There are many types of dryers, among which rotary drum dryers are the most common and widely used type of dryers. For different materials, the rotary drum dryer may be required to transport grain at different speeds and / or adjust the heating temperature accordingly. In order to achieve the above functions, the rotary drum dryer in the prior art is usually designed with complex functional structures and relatively bulky sizes. At the same time, the price is relatively high, and there are shortcomings such as not being flexible and light enough and cannot be used in ordinary household scenarios. Summary of the invention

[0004] The present invention aims to provide a rotary drum dryer which is light and easy to operate, suitable for different types of materials, has low production cost, and is suitable for household scenarios.

[0005] In order to solve the above technical problems, the present invention provides a rotary drum dryer, comprising:

[0006] frame;

[0007] A support, comprising a rotating shaft, the support is relatively rotatably mounted on the frame around the rotating shaft, the support having a first end and a second end arranged opposite to each other in a first direction, the first end and the second end being arranged on both sides of the rotating shaft;

[0008] A main body, comprising a feed cylinder, a rotary cylinder and a discharge cylinder arranged in sequence along a first direction, a channel connecting the feed cylinder, the rotary cylinder and the discharge cylinder is formed in the main body, the feed cylinder is supported at the first end, and is provided with a feed port and an air inlet connected to the channel, the discharge cylinder is supported at the second end, and is provided with a discharge port and an air outlet connected to the channel, and the two ends of the rotary cylinder in the first direction are rotatably supported by the feed cylinder and the discharge cylinder respectively and correspondingly;

[0009] A lifting mechanism is arranged on the frame, the lifting mechanism is in driving connection with the support, and is used to drive the support to rotate around the rotating shaft relative to the frame; and

[0010] The driving mechanism is arranged on the support, and the driving mechanism is connected to the rotary drum to drive the rotary drum to rotate relative to the support around a rotation axis extending along the first direction.

[0011] Optionally, the support includes a first bracket and a second bracket arranged between the first end and the second end, the first bracket is relatively close to the first end, and the second bracket is relatively close to the second end, the lifting mechanism is transmission-connected with the first bracket, so as to be driven to move the first bracket up and down, thereby driving the support to rotate, and the rotating shaft is fixed on the second bracket, so that the second bracket is rotatably connected to the frame through the rotating shaft;

[0012] A limiting mechanism is provided between the support and the frame so that the support is limited at any rotation angle relative to the frame.

[0013] Optionally, the limiting mechanism includes a plurality of pressure wheels mounted on the first bracket and the second bracket and a plurality of clamping groups arranged on the frame, the plurality of clamping groups are arranged in one-to-one correspondence with the plurality of pressure wheels, and each of the clamping groups respectively includes a mounting plate, an adjusting bolt and a clamping plate, the mounting plate is fixed to the frame, the clamping plate is adjustably and movably mounted on the mounting plate by the adjusting bolt, each clamping plate is respectively arranged toward the pressure wheel, and respectively has a locking position for pressing against the pressure wheel, and an unlocking position for separating from the pressure wheel.

[0014] Optionally, the lifting mechanism includes a jack and a handle, the lower end of the jack is fixed to the frame, the upper end is connected to the first bracket, and a driving screw is provided between the upper and lower ends, and the handle is detachably assembled on the driving screw.

[0015] Optionally, the support also includes a crossbeam arranged between the first bracket and the second bracket, and the driving mechanism includes a motor and a driving gear arranged on the crossbeam, the motor is drivingly connected to the driving gear, the outer periphery of the rotating drum is provided with a gear ring, and the driving gear is meshed with the gear ring.

[0016] Optionally, the support also includes a first support rod extending from the first bracket to the first end, and a second support rod extending from the second bracket to the second end, a first arc-shaped mounting frame opening upward is provided on the upper side of the first support rod, and the feed barrel is supported on the first arc-shaped mounting frame, and a second arc-shaped mounting frame opening upward is provided on the upper side of the second support rod, and the discharge barrel is supported on the second arc-shaped mounting frame.

[0017] Optionally, a baffle is protrudingly provided on the outer peripheral side of the discharge barrel, and a stop wheel is also provided on the upper side of the second support rod and is located between the baffle and the second end in the first direction, and the stop wheel abuts against the baffle.

[0018] Optionally, the feed port is opened on the upper side of the feed barrel, the air inlet is opened on the end side of the feed barrel, the discharge port is opened on the lower side of the discharge barrel, and the air outlet is opened on the upper side of the discharge barrel.

[0019] Optionally, the rotary drum dryer also includes a feed pipe, which is inserted into the feed port and has a feed port at the upper end. The lower end of the feed pipe is inserted into the channel and bends and extends toward the direction of the rotary drum. The inner wall of the feed drum is also protrudingly provided with a guide plate extending in a spiral shape, and the guide plate is arranged between the feed pipe and the rotary drum.

[0020] Optionally, a lifting plate is protruding from the inner peripheral wall of the channel, and the lifting plate is detachably mounted on the body.

[0021] The technical solution provided by the present invention has the following advantages:

[0022] The rotary drum dryer provided by the present invention includes a frame, a support, a main body, a lifting mechanism and a driving mechanism, wherein the support can be mounted on the frame so as to swing up and down, and the main body includes a rotary drum rotatably mounted on the bracket, the lifting mechanism is arranged on the frame to drive the support to swing up and down, and the driving mechanism is arranged on the support to drive the rotary drum to rotate relative to the support. In this way, the machine is used to utilize hot air circulation and continuously rotate to break up the grain to quickly evaporate the moisture in the grain, thereby achieving the grain drying effect. In the embodiment provided by the present invention, the lifting mechanism can drive the support to swing up and down to any rotation angle, so as to adaptively adjust the downward inclination angle of the channel according to the type and humidity of the material to be dried, thereby adjusting the discharge speed and drying time, and the up and down swinging posture of the main body can be more flexibly adjusted during the drying process to adapt to different materials and drying requirements, thereby improving the adaptability and use efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A three-dimensional structural diagram of an embodiment of a rotary drum dryer provided by the present invention

[0025] Figure 2 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0026] Figure 3 for Figure 1 The enlarged schematic diagram of point B in the middle;

[0027] Figure 4 for Figure 1 Front view of the medium rotary drum dryer;

[0028] Figure 5 for Figure 4 The enlarged schematic diagram of the center C;

[0029] Figure 6 for Figure 1 Schematic diagram of the three-dimensional structure of the rotary drum dryer from another perspective;

[0030] Figure 7 for Figure 1 A cutaway diagram of a medium rotary drum dryer;

[0031] Figure 8 for Figure 7 The enlarged schematic diagram of point D in the middle;

[0032] Fig. 9 for Figure 1 Assembly diagram of the middle frame, support and lifting mechanism;

[0033] Fig.10 for Fig. 9 The assembled side view of the middle frame, support and lifting mechanism;

[0034] Fig.11 for Figure 4 A front view of the subject;

[0035] Fig.12 for Fig.11 The enlarged schematic diagram of point E in the middle;

[0036] Fig.13 for Fig.11 Cross-sectional view at FF.

[0037] Description of reference numerals:

[0038] 100-rotary drum dryer; 10-frame; 20-support; 21-first end; 22-second end; 23-rotating shaft; 24-first bracket; 25-second bracket; 26-crossbeam; 27-first support rod; 271-first arc-shaped mounting frame; 28-second support rod; 281-second arc-shaped mounting frame; 282-stop wheel; 30-main body; 31-feeding cylinder; 311-guide plate; 32-rotating cylinder; 321-gear ring; 33-discharging cylinder; 331-baffle; 40-channel; 41-feeding port; 42-discharging port; 43-air inlet; 44-air outlet; 45-copying plate; 50-lifting mechanism; 51-jack; 511-driving screw; 52-handle; 60-driving mechanism; 61-motor; 62-driving gear; 70-limiting mechanism; 71-pressure wheel; 72-clamping group; 721-mounting plate; 722-adjusting bolt; 723-clamping plate; 80-feeding pipe; 81-feeding hopper. DETAILED DESCRIPTION

[0039] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0040] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0041] See also Figures 1 to 13 The present invention includes a rotary drum dryer 100, including a frame 10, a support 20, a main body 30, a lifting mechanism 50 and a driving mechanism 60. The rotary drum dryer 100 is used to quickly evaporate the moisture in the grain by circulating hot air and continuously rotating and breaking up the grain, thereby achieving a grain drying effect.

[0042] Specifically, the frame 10 is used to carry and fix the entire device and assemble the components together. The support 20 can be mounted on the frame 10 in a swingable manner, and the main body 30 includes a rotary drum 32 rotatably mounted on the bracket. A channel 40 is formed in the main body 30, and an air inlet 43 and an air outlet 44 connected to the channel 40 are provided so that hot air can flow continuously through the channel 40. It should be noted that the rotary drum dryer 100 provided by the present invention may include a hot air generating device, and may also be connected to an external hot air generating device through the air inlet 43. Preferably, the rotary drum dryer 100 provided by the present invention can select external heat generating devices with different heating powers and air supply volumes as needed, so that the heating temperature and / or air supply volume can be adjusted more flexibly and widely, so as to adapt to the drying work of different varieties of grains. In this way, the rotary drum dryer 100 has a more hot air generating device generally including a fan and a heating assembly, and its specific structure can refer to the prior art, which will not be repeated here. In addition, in this embodiment, the hot air directly contacts the material after entering the channel 40, which increases the heat transfer effect and improves the drying efficiency.

[0043] Specifically, the support 20 is relatively rotatably mounted on the frame 10 around the rotation axis 23, and the support 20 has a first end 21 and a second end 22 which are arranged opposite to each other in a first direction, and the first end 21 and the second end 22 are arranged on both sides of the rotation axis 23. In this way, when the first end 21 is driven to rise, the second end 22 is correspondingly lowered, and vice versa, when the first end 21 is driven to fall, the second end 22 is correspondingly raised.

[0044] Furthermore, the main body 30 includes a feed cylinder 31, a rotating cylinder 32 and a discharge cylinder 33 which are arranged in sequence along the first direction. A channel 40 connecting the feed cylinder 31, the rotating cylinder 32 and the discharge cylinder 33 is formed in the main body 30. The feed cylinder 31 is supported at the first end 21, and is provided with a feed port 41 and an air inlet 43 connecting the channel 40. The discharge cylinder 33 is supported at the second end 22, and is provided with a discharge port 42 and an air outlet 44 connecting the channel 40. The two ends of the rotating cylinder 32 in the first direction are rotatably supported by the feed cylinder 31 and the discharge cylinder 33 respectively.

[0045] The driving mechanism 60 is disposed on the support 20, and the driving mechanism 60 is connected to the rotary drum 32 to drive the rotary drum 32 to rotate relative to the support 20 around the rotating shaft 23 extending along the first direction. In this embodiment, the material to be dried enters the channel 40 through the feed port 41, and as the rotary drum 32 rotates, the material is transported in the channel 40 along the feed drum 31 and the rotary drum 32 toward the discharge drum 33 under the action of gravity and hot air flow. The hot air supply device is connected to the air inlet 43, and the hot air flow is continuously input into the channel 40 through the feed drum 31, and the exhaust gas is sent out through the air outlet 44, so as to achieve heating and drying of the material in the channel 40.

[0046] Preferably, the inner wall of the channel 40 is convexly provided with a lifting plate 45, which continuously lifts the material, and when the material reaches a certain height, the material falls freely and contacts with the hot air flowing in the cylinder, thereby achieving the effect of drying the material. Preferably, the lifting plate 45 is detachably mounted on the body. In one embodiment, the lifting plate 45 is detachably fixed to the inner wall of the rotary cylinder 32 by bolts, so that it can be easily disassembled and replaced when necessary. Compared with the traditional welding method, the bolt connection not only improves the installation efficiency, but also reduces the maintenance cost. When the equipment fails or needs regular maintenance, the user can easily disassemble the lifting plate 45 and carry out necessary maintenance or replacement.

[0047] In this embodiment, the lifting mechanism 50 is arranged on the frame 10, and the lifting mechanism 50 is connected to the support 20 in a transmission manner, and is used to drive the support 20 to rotate relative to the frame 10 around the rotating shaft 23. The specific structure of the lifting mechanism 50 is not limited. In this embodiment, the lifting mechanism 50 can drive the support 20 to swing up and down to any rotation angle, so as to adaptively adjust the downward tilt angle of the channel 40 according to the type and humidity of the dried material, thereby adjusting the discharge speed and drying time. In addition, the up and down swinging posture of the body can be more flexibly adjusted during the drying process to adapt to different materials and drying requirements, thereby improving the adaptability and use efficiency of the equipment.

[0048] For further information, please refer to Figure 1 , Figure 6 and Fig. 9 The support 20 includes a first bracket 24 and a second bracket 25 arranged between the first end 21 and the second end 22. The first bracket 24 is relatively close to the first end 21, and the second bracket 25 is relatively close to the second end 22. The lifting mechanism 50 is connected to the first bracket 24 in a transmission manner so as to be driven by the first bracket 24 to move up and down, thereby driving the support 20 to rotate. The rotating shaft 23 is fixed on the second bracket 25 so that the second bracket 25 is rotatably connected to the frame 10 through the rotating shaft 23. Specifically, the rotating shaft 23 is arranged in the middle of the second bracket 25, and the rotating shaft 23 is rotatably supported on the frame 10, so that the support 20 body is rotatably supported on the frame 10 relative to the rotating shaft 23. Further, a limiting mechanism 70 is arranged between the support 20 and the frame 10 so that the support 20 is limited at any rotation angle relative to the frame 10. It should be noted that the driving mechanism 60 drives the first end 21 so that the support 20 drives the body to reach the desired rotation angle, and then the limiting mechanism 70 needs to be operated to fix the support 20 so that it is limited relative to the frame 10 and then fixed at the desired rotation angle.

[0049] Optionally, the limiting mechanism 70 includes a plurality of clamping wheels 71 mounted on the first bracket 24 and the second bracket 25 and a plurality of clamping groups 72 arranged on the frame 10. The plurality of clamping groups 72 are arranged in one-to-one correspondence with the plurality of clamping wheels 71, and each clamping group 72 respectively includes a mounting plate 721, an adjusting bolt 722 and a clamping plate 723. The mounting plate 721 is fixed on the frame 10, and the clamping plate 723 is adjustably and movably mounted on the mounting plate 721 by means of the adjusting bolt 722. Each clamping plate 723 is respectively arranged toward the clamping wheel 71, and respectively has a locking position for pressing against the clamping wheel 71, and an unlocking position for separating from the clamping wheel 71. In this embodiment, when the inclination angle of the main body needs to be adjusted, it is necessary to first operate the limiting mechanism 70 to unlock the support 20. Specifically, it is necessary to screw the adjusting bolts 722 to move the clamping plates 723 one by one in the direction of the mounting plate 721, so that the clamping plates 723 no longer act on the clamping wheel 71, so that the support 20 can drive the main body to rotate around the rotating shaft 23. At this time, it is necessary to operate the lifting mechanism 50 to lift or lower the first bracket 24 so that the support 20 rotates to a suitable angle. Then operate the limiting mechanism 70, screw the adjusting bolts 722, and move the clamping plates 723 one by one in the direction of the clamping wheel 71 so that the two are pressed against each other, thereby achieving the limiting fixation of the support 20 and the main body. This design makes the angle adjustment of the frame 10 convenient and quick, and also ensures the stability of the frame 10 during operation.

[0050] The specific structure of the lifting mechanism 50 can be various. In this embodiment, please refer to Figure 2 and Fig.10 ,

[0051] The lifting mechanism 50 includes a jack 51 and a handle 52. The lower end of the jack 51 is fixed to the frame 10, and the upper end is connected to the first bracket 24. A driving screw 511 is provided between the upper and lower ends, and the handle 52 is detachably mounted on the driving screw 511. As shown in the figure, the jack 51 is mainly composed of four U-shaped plates, which not only have sufficient strength, but also can achieve lightweight while ensuring stability. The U-shaped plates are connected to each other by bolts to form a stable whole. This design not only makes the lifting mechanism 50 more stable and reliable during operation, but also facilitates installation and disassembly, thereby improving work efficiency. A driving screw 511 is provided at the driving end of the jack 51, and a direction structure is provided at one end of the driving screw 511, which is dedicated to connecting the handle 52. When the angle between the support 20 and the body needs to be adjusted, the operator only needs to put the sleeve at one end of the handle 52 on the square structure of the driving screw 511, and then turn the handle 52 to adjust the angle of the cylinder. This adjustment method is simple and convenient. At the same time, due to the precise fit between the screw and the U-shaped plate, the entire adjustment process is stable and smooth, avoiding possible jamming or shaking. When the angle adjustment is completed, the handle 52 can be removed from the drive screw 511. This design not only facilitates the storage and transportation of the rotary drum dryer 100 as a whole, but also avoids possible interference or damage to the handle 52 when it is not needed.

[0052] Please refer to Figures 4 to 6 as well as Fig. 9 The support 20 further includes a crossbeam 26 disposed between the first bracket 24 and the second bracket 25. The driving mechanism 60 includes a motor 61 and a driving gear 62 disposed on the crossbeam 26. The motor 61 is drivingly connected to the driving gear 62. A gear ring 321 is sleeved on the outer periphery of the rotary drum 32. The driving gear 62 is meshed with the gear ring 321. In this embodiment, the motor 61 and the driving gear 62 fixed on the crossbeam 26 output torque, which is matched with the gear ring 321 disposed on the outer ring of the rotary drum 32 to drive the rotary drum 32 to rotate. In this way, the rotary drum 32 is driven to rotate smoothly.

[0053] In order to achieve a reliable connection between the support 20 and the body, please refer to Fig. 9 and Fig.10The support 20 further includes a first support rod 27 extending from the first bracket 24 to the first end 21, and a second support rod 28 extending from the second bracket 25 to the second end 22. A first arc-shaped mounting frame 271 with an opening upward is provided on the upper side of the first support rod 27, and a feed barrel 31 is supported on the first arc-shaped mounting frame 271. A second arc-shaped mounting frame 281 with an opening upward is provided on the upper side of the second support rod 28, and a discharge barrel 33 is supported on the second arc-shaped mounting frame 281. In this embodiment, the feed barrel 31 and the discharge barrel 33 are stably supported by the arc-shaped mounting frames respectively. This design effectively reduces the vibration and deformation of the support 20 when bearing by increasing the supporting area of ​​the body and dispersing the load. The arc-shaped mounting frame 10 is made of high-strength materials and is precisely designed to ensure that it has sufficient strength and stability during use.

[0054] In order to stably support the main body when the main body is tilted, Figure 3 and Figure 4 As shown, a baffle plate 331 is convexly provided on the outer circumference of the discharge barrel 33, and a stopper wheel 282 is provided on the upper side of the second support rod 28 between the baffle plate 331 and the second end 22 in the first direction, and the stopper wheel 282 abuts against the baffle plate 331. In this way, when the first bracket 24 is lifted upward, the stopper wheel 282 supports the body at the bottom to prevent the body from sliding relative to the support 20.

[0055] Based on the above examples, please refer to Figure 7 The feed port 41 is opened on the upper side of the feed barrel 31, the air inlet 43 is opened on the end side of the feed barrel 31, the discharge port 42 is opened on the lower side of the discharge barrel 33, and the air outlet 44 is opened on the upper side of the discharge barrel 33. In this embodiment, the material can be transported to the feed port 41 through an external lifting device and sent into the channel 40. After the material passes through the channel 40 and is dried, it falls and is sent out from the discharge port 42 under the action of gravity. The air inlet direction is consistent with the extension direction of the channel 40, providing efficient heating airflow, and the air outlet 44 is set on the upper side to prevent the airflow from carrying the material out of the air outlet 44.

[0056] Please continue reading Figure 7Preferably, the rotary drum dryer 100 further includes a feed pipe 80, which is inserted into the feed port 41 and is provided with the feed port 41 at the upper end. The lower end of the feed pipe 80 is inserted into the channel 40 and is bent and extended in the direction of the rotary drum 32. The inner wall of the feed drum 31 is also provided with a guide plate 311 extending in a spiral shape, and the guide plate 311 is provided between the feed pipe 80 and the rotary drum 32. In this embodiment, it is preferred that a feed hopper 81 is provided at the upper end of the feed pipe 80 to facilitate feeding. The bent and extended feed pipe 80 guides the material into the channel 40 in the extension direction of the channel 40, and then is spirally pushed to the vicinity of the scoop plate 45 under the action of the guide plate 311, which effectively prevents the material from piling up during the drying process, ensures that the material is evenly distributed and continuously flows, and thus improves the drying efficiency.

[0057] Obviously, the embodiments described above are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, ordinary technicians in this field can make other different forms of changes or modifications without creative work, which should fall within the scope of protection of the present invention.

Claims

1. A rotary drum dryer, characterized in that: include: frame; A support, comprising a rotating shaft, the support is relatively rotatably mounted on the frame around the rotating shaft, the support having a first end and a second end arranged opposite to each other in a first direction, the first end and the second end being arranged on both sides of the rotating shaft; A main body, comprising a feed cylinder, a rotary cylinder and a discharge cylinder arranged in sequence along a first direction, a channel connecting the feed cylinder, the rotary cylinder and the discharge cylinder is formed in the main body, the feed cylinder is supported at the first end, and is provided with a feed port and an air inlet connected to the channel, the discharge cylinder is supported at the second end, and is provided with a discharge port and an air outlet connected to the channel, and the two ends of the rotary cylinder in the first direction are rotatably supported by the feed cylinder and the discharge cylinder respectively and correspondingly; A lifting mechanism is arranged on the frame, the lifting mechanism is in driving connection with the support, and is used to drive the support to rotate around the rotating shaft relative to the frame; and The driving mechanism is arranged on the support, and the driving mechanism is connected to the rotary drum to drive the rotary drum to rotate relative to the support around a rotation axis extending along the first direction.

2. The rotary drum dryer according to claim 1, characterized in that: The support includes a first bracket and a second bracket arranged between the first end and the second end, the first bracket is relatively close to the first end, and the second bracket is relatively close to the second end, the lifting mechanism is transmission-connected with the first bracket so as to be driven to move the first bracket up and down, thereby driving the support to rotate, and the rotating shaft is fixed on the second bracket so that the second bracket is rotatably connected to the frame through the rotating shaft; A limiting mechanism is provided between the support and the frame so that the support is limited at any rotation angle relative to the frame.

3. The rotary drum dryer according to claim 2, characterized in that: The limiting mechanism includes a plurality of pressure wheels installed on the first bracket and the second bracket and a plurality of clamping groups arranged on the frame. The plurality of clamping groups are arranged in one-to-one correspondence with the plurality of pressure wheels, and each of the clamping groups respectively includes a mounting plate, an adjusting bolt and a clamping plate. The mounting plate is fixed to the frame, and the clamping plate is adjustably and movably mounted on the mounting plate by the adjusting bolt. Each clamping plate is respectively arranged toward the pressure wheel, and respectively has a locking position for pressing against the pressure wheel, and an unlocking position for separating from the pressure wheel.

4. The rotary drum dryer according to claim 2, characterized in that: The lifting mechanism includes a jack and a handle. The lower end of the jack is fixed to the frame, the upper end is connected to the first bracket, and a driving screw is arranged between the upper and lower ends. The handle is detachably assembled on the driving screw.

5. The rotary drum dryer according to claim 2, characterized in that: The support also includes a crossbeam arranged between the first bracket and the second bracket, and the driving mechanism includes a motor and a driving gear arranged on the crossbeam, the motor is drivingly connected to the driving gear, the outer periphery of the rotating drum is provided with a gear ring, and the driving gear is meshed with the gear ring.

6. The rotary drum dryer according to claim 2, characterized in that: The support also includes a first support rod extending from the first bracket to the first end, and a second support rod extending from the second bracket to the second end. A first arc-shaped mounting frame opening upward is provided on the upper side of the first support rod, and the feed barrel is supported on the first arc-shaped mounting frame. A second arc-shaped mounting frame opening upward is provided on the upper side of the second support rod, and the discharge barrel is supported on the second arc-shaped mounting frame.

7. The rotary drum dryer according to claim 6, characterized in that: A baffle is also protrudingly provided on the outer peripheral side of the discharging cylinder, and a stop wheel is also provided on the upper side of the second support rod, which is located between the baffle and the second end in the first direction, and the stop wheel abuts against the baffle.

8. The rotary drum dryer according to any one of claims 2 to 7, characterized in that: The feed port is opened on the upper side of the feed barrel, the air inlet is opened on the end side of the feed barrel, the discharge port is opened on the lower side of the discharge barrel, and the air outlet is opened on the upper side of the discharge barrel.

9. The rotary drum dryer according to claim 8, characterized in that: The rotary drum dryer also includes a feed pipe, which is inserted into the feed port and has a feed port at the upper end. The lower end of the feed pipe is inserted into the channel and extends in a curved direction toward the rotary drum. The inner wall of the feed drum is also provided with a guide plate extending in a spiral shape, and the guide plate is arranged between the feed pipe and the rotary drum.

10. The rotary drum dryer according to any one of claims 2 to 7, characterized in that: The inner peripheral wall of the channel is convexly provided with a lifting plate, and the lifting plate is detachably mounted on the body.

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