Drum-type grain dryer

Abstract

The invention relates to the technical field of grain processing, and particularly discloses a drum-type grain dryer which comprises a fixed rack, a feeding frame and a drying frame, the feeding frame is rotationally arranged on the left side of the interior of the fixed rack, and the drying frame is fixedly arranged on the right side of the feeding frame. Grain needing to be dried is automatically distributed according to different particle sizes from small to large through the material distribution assembly in the feeding frame, the grain with different particle sizes is fed into the multiple drying cavities in the drying barrel, and then drying treatment at different air speeds can be conducted according to the grain with different particle sizes; in addition, the grains with different grain sizes are in the respective drying cavities, and the sizes of the grains are relatively uniform, so that the gap difference among the grains can be reduced, the flowing path of hot air in the grains is optimized, the heat transfer efficiency is improved, the hot air can be in more uniform contact with the grains, the heat waste is reduced, the drying efficiency is further improved, and the energy consumption is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of grain processing, in particular to a drum type grain dryer. Background Art

[0002] In the agricultural field, grain drying is an important step to ensure the quality of grain storage. Traditional grain drying methods mostly use natural air drying or simple drying equipment. These methods are not only inefficient, but also easily affected by weather and environmental factors, resulting in reduced grain quality and increased energy consumption. With the development of agricultural mechanization, drum grain dryers have gradually become the main equipment for grain drying due to their high efficiency and energy-saving characteristics. However, existing drum grain dryers often have problems such as uneven drying, high energy consumption, and inconvenient discharge during the drying process, which seriously affects the drying effect and economic benefits.

[0003] Some current drum-type grain dryers can adjust the drying angle according to the type and humidity of the grain by setting an adjustable drying rack to improve the drying efficiency. At the same time, the method of zone drying is adopted to dry grains of different particle sizes at different wind speeds to reduce heat waste and energy consumption. However, these improvements still have some shortcomings in actual operation. For example, the adjustment method of the drying rack is not flexible enough, resulting in limited drying effect; although zone drying improves the drying efficiency, the heat transfer and circulation between the drying zones are not ideal, which affects the overall drying effect.

[0004] For this purpose, we propose a drum type grain dryer. Summary of the invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a drum type grain dryer to solve the above mentioned technical defects.

[0006] To achieve the above purpose, the present invention is implemented through the following technical solutions: a drum-type grain dryer, comprising a fixed frame, a feeding frame and a drying frame, wherein the left side of the fixed frame is rotatably provided with the feeding frame, and the right side of the feeding frame is fixedly provided with the drying frame, and the right side of the bottom of the drying frame is fixedly provided with an adjusting frame, and the front and rear sides of the adjusting frame are respectively movably connected with the right side of the fixed frame;

[0007] The feeding rack is provided with a material dividing assembly inside, the drying rack is provided with a drying drum rotatably inside, and a drying assembly is provided inside the drying drum;

[0008] The material distribution assembly comprises a screening frame, the inside of the feeding frame is fixedly provided with the screening frame, the bottom of the screening frame is fixedly provided with a fixed screen, and the bottom of the fixed screen is slidably provided with an adjustable screen, and both sides of the bottom of the screening frame are fixedly provided with adjustable electric cylinders, and the driving ends of the two adjustable electric cylinders are fixedly connected to the two sides of the adjustable screen respectively;

[0009] The drying component includes a material dividing rack, the interior of the drying cylinder is fixedly provided with a material dividing rack, and the material dividing rack divides the interior of the drying cylinder into a plurality of drying chambers, the interior of the drying cylinder is also rotatably provided with a plurality of material turning racks, and the plurality of material turning racks are respectively located in the interiors of the plurality of drying chambers, the interior of the material dividing rack is also fixedly provided with a plurality of air blowing racks, and the interior of the material dividing rack is provided with an air guide port, the interiors of the air guide port are respectively connected with the interiors of the plurality of air blowing racks, and the interiors of the plurality of air blowing racks are all provided with flow control valves, wherein the air ports of the plurality of air blowing racks are respectively directed toward the interiors of the plurality of drying chambers.

[0010] Furthermore, a servo electric cylinder is fixedly arranged on the right side inside the fixed frame, and the driving end of the servo electric cylinder is movably connected to the bottom of the adjustment frame. Adjustment slide grooves are arranged on the front and rear sides of the right side inside the fixed frame, and the front and rear sides of the adjustment frame are respectively slidably connected to the inside of the two adjustment slide grooves.

[0011] Furthermore, a scraper rack is rotatably arranged inside the feed rack and above the screening rack, and the outer peripheral surface of the scraper rack is in sliding contact with the upper surface of the fixed screen. A drive motor is fixedly arranged on the left side of the feed rack, and the right end of the output shaft of the drive motor is fixedly connected to the inside of the scraper rack.

[0012] Furthermore, a material guide rack is fixedly arranged at the bottom of the screening rack, and a material guide trough which is higher on the left and lower on the right is arranged inside the material guide rack. A plurality of feeding ports are arranged on the left side of the drying cylinder, and one side of the feeding port extends to the interior of the feeding rack. The interior of the feeding port is connected with the interior of the material guide rack, and an electrically controlled closing plate is slidably arranged on one side of the interior of the feeding port.

[0013] Furthermore, an air inlet interface is rotatably provided on the right side of the drying cylinder, and the right side of the air inlet interface extends to the right side of the drying rack, a plurality of one-way exhaust valves are fixedly provided on the left side of the drying cylinder, and the interiors of the plurality of one-way exhaust valves are respectively connected to the interiors of a plurality of drying chambers, a spiral rack is fixedly provided on the interior of the drying rack, and the surface of the drying cylinder is in sliding contact with the interior of the spiral rack, and an air outlet interface is fixedly provided on the right side of the drying rack.

[0014] Furthermore, a driving rod is rotatably provided on the left side of the material guide rack, and a driving gear is fixedly provided on the surface of the driving rod. A plurality of transmission rods are also rotatably provided on the left side of the drying cylinder, and a driven gear meshing with the surface of the driving gear is fixedly provided on the surfaces of the plurality of transmission rods. The left end of the driving rod is fixedly connected to the right side of the scraper rack, and the right end of the driving rod is movably connected to the inside of the drying cylinder through an electric limit block. The right ends of the plurality of transmission rods are respectively fixedly connected to the left ends of a plurality of material turning racks.

[0015] Furthermore, a plurality of discharge ports are provided on the right side of the drying cylinder, a discharge pipe is fixedly provided at the lower part of the right side of the drying rack, and an automatic control valve is provided at the upper part of the discharge pipe.

[0016] The beneficial effects achieved by the present invention using the above structure are as follows:

[0017] 1. In the present invention, the driving end of the servo electric cylinder controls the adjusting frame to move up and down along the inside of the adjusting slide slot, thereby driving the right side of the drying frame to move up and down inside the fixed frame, while the position of the feeding frame arranged on the left side of the drying frame remains fixed. Therefore, the grain inside the drying frame is controlled to tilt left and right, so that the grain inside the drying frame can flow back and forth left and right, thereby improving the drying effect of the grain. At the same time, after the drying process of the grain is completed, the height of the right side of the drying frame is controlled to drop, thereby facilitating the rapid discharge of the grain inside the drying frame under the action of gravity.

[0018] 2. In the present invention, a drying component inside the drying cylinder is utilized to divide the interior of the drying cylinder into a plurality of drying chambers, and the dividing component inside the feed rack is cooperated to automatically divide the grains to be dried from small to large according to the sizes of different particle sizes, and the grains of different particle sizes are fed into the plurality of drying chambers inside the drying cylinder, and then the grains of different particle sizes can be dried at different wind speeds. In addition, since the grain particles of different particle sizes are relatively uniform in their respective drying chambers, the difference in gaps between the particles can be reduced, thereby optimizing the flow path of the hot air in the grain and improving the heat transfer efficiency. The hot air can contact the grain more evenly, reducing the waste of heat, further improving the drying efficiency, and reducing energy consumption.

[0019] 3. In the present invention, the driving ends of two adjusting electric cylinders are used to control the adjusting screen to slide on the bottom of the fixed screen, thereby adjusting the overlap of the sieve holes of the fixed screen and the adjusting screen, so as to achieve an effective sorting effect on grains of different particle sizes. First, the overlap of the sieve holes of the fixed screen and the adjusting screen is controlled to be low to sort out small-sized grains, and then the overlap of the sieve holes of the fixed screen and the adjusting screen is gradually increased to sort grains of different particle sizes from small to large. The grains to be dried are sorted into the same number of categories according to the number of drying chambers, thereby achieving independent drying of grains of different particle sizes, which not only improves the drying efficiency of the grains, but also reduces heat waste and energy consumption.

[0020] 4. In the present invention, the turning rack arranged inside the drying chamber is used to turn the grain, thereby increasing the contact area between the grain and the hot air, which greatly enhances the drying efficiency of the grain. In addition, according to the grains of different particle sizes, the blowing flow rate of the blowing rack inside the corresponding drying chamber is controlled, and the grains of small particle sizes are dried at a low wind speed, and the grains of large particle sizes are dried at a high wind speed, thereby reducing the waste of heat, further improving the drying efficiency, and reducing energy consumption. In addition, after the hot air inside each drying chamber is discharged through the one-way exhaust valve on the left, it flows between the inside of the drying rack and the surface of the drying cylinder along the spiral rack arranged on the surface of the drying cylinder. Such a structural design can utilize the circulating hot air to dry and insulate the drying cylinder, thereby further improving the utilization rate of heat, and to a great extent, it can also improve the drying efficiency of the grain inside the drying cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 This is a schematic diagram of a drum-type grain dryer structure according to an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of the structure of the air inlet interface and the air outlet interface according to an embodiment of the present invention;

[0024] Figure 3 It is a schematic diagram of the adjustment frame and the adjustment slide groove structure according to an embodiment of the present invention;

[0025] Figure 4 It is a schematic diagram of a drying drum and a spiral frame structure according to an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the internal structure of a drying drum according to an embodiment of the present invention;

[0027] Figure 6 It is a schematic diagram of the internal structure of the feed rack according to an embodiment of the present invention;

[0028] Figure 7 A schematic diagram of a fixed screen and an adjustable screen structure according to an embodiment of the present invention;

[0029] Figure 8 Schematic diagram of the driving gear and driven gear structure according to an embodiment of the present invention.

[0030] In the figure, 1. fixed frame; 2. feeding frame; 3. drying frame; 4. adjusting frame; 5. driving motor; 6. servo electric cylinder; 7. adjusting slide; 8. screening frame; 9. fixed screen; 10. adjusting screen; 11. adjusting electric cylinder; 12. scraper frame; 13. material guide frame; 14. drying cylinder; 15. feeding port; 16. electric control closing plate; 17. material dividing frame; 18. driving rod; 19. transmission rod; 20. driving gear; 21. driven gear; 22. turning frame; 23. spiral frame; 24. blowing frame; 25. air guide port; 26. air inlet interface; 27. one-way exhaust valve; 28. air outlet interface; 29. ​​discharge port; 30. discharge pipe. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] Embodiment 1:

[0034] See also Figures 1 to 8 As shown, a drum-type grain dryer comprises a fixed frame 1, a feeding frame 2 and a drying frame 3, wherein the feeding frame 2 is rotatably arranged on the left side inside the fixed frame 1, and the drying frame 3 is fixedly arranged on the right side of the feeding frame 2, and an adjusting frame 4 is fixedly arranged on the right side of the bottom of the drying frame 3, and the front and rear sides of the adjusting frame 4 are respectively movably connected to the right side inside the fixed frame 1;

[0035] Specifically, a servo electric cylinder 6 is fixedly arranged on the right side inside the fixed frame 1, and the driving end of the servo electric cylinder 6 is movably connected to the bottom of the adjustment frame 4, and the front and rear sides of the right side inside the fixed frame 1 are both provided with adjustment slide grooves 7, and the front and rear sides of the adjustment frame 4 are respectively slidably connected to the inside of the two adjustment slide grooves 7;

[0036] It should be noted that when adjusting the inclination angle of the drying rack 3, the driving end of the servo electric cylinder 6 controls the adjusting rack 4 to move up and down along the inside of the adjusting slide slot 7, thereby driving the right side of the drying rack 3 to move up and down inside the fixed frame 1, while the position of the feeding rack 2 arranged on the left side of the drying rack 3 remains fixed. Therefore, the grain inside the drying rack 3 is tilted left and right, so that the grain inside the drying rack 3 can flow back and forth left and right, thereby improving the drying effect of the grain. At the same time, after the drying process of the grain is completed, the height of the right side of the drying rack 3 is controlled to drop, thereby facilitating the rapid discharge of the grain inside the drying rack 3 under the action of gravity.

[0037] Furthermore, a material dividing assembly is arranged inside the feeding rack 2, a drying drum 14 is rotatably arranged inside the drying rack 3, and a drying assembly is arranged inside the drying drum 14;

[0038] It should be noted that the interior of the drying cylinder 14 is divided into several drying chambers by utilizing the drying component inside the drying cylinder 14, and the dividing component inside the feeding rack 2 is cooperated to automatically divide the grain to be dried from small to large according to the different particle sizes, and the grains of different particle sizes are fed into the several drying chambers inside the drying cylinder 14, so that the grains of different particle sizes can be dried at different wind speeds. In addition, since the grain particles of different particle sizes are relatively uniform in their respective drying chambers, the difference in gaps between the particles can be reduced, thereby optimizing the flow path of the hot air in the grain and improving the heat transfer efficiency. The hot air can contact the grain more evenly, reducing the waste of heat, further improving the drying efficiency, and reducing energy consumption.

[0039] Specifically, the material separation component includes a screening frame 8, the screening frame 8 is fixedly arranged inside the feed frame 2, wherein a cover plate is rotatably arranged on the top of the feed frame 2 through a rotating shaft, and after the grain is fed into the feed frame 2, the inside of the feed frame 2 is sealed by the cover plate, thereby preventing the dust generated during the grain sorting process from escaping; a fixed screen 9 is fixedly arranged at the bottom of the screening frame 8, and an adjustable screen 10 is slidably arranged at the bottom of the fixed screen 9, and adjustable electric cylinders 11 are fixedly arranged on both sides of the bottom of the screening frame 8, and the driving ends of the two adjustable electric cylinders 11 are fixedly connected to the two sides of the adjustable screen 10 respectively;

[0040] It should be noted that when sorting grains, the driving ends of the two adjusting electric cylinders 11 are used to control the adjusting screen 10 to slide on the bottom of the fixed screen 9, thereby adjusting the overlap of the sieve holes of the fixed screen 9 and the adjusting screen 10, so as to achieve an effective sorting effect on grains of different particle sizes. First, the overlap of the sieve holes of the fixed screen 9 and the adjusting screen 10 is controlled to be low to sort out grains of small particle sizes, and then the overlap of the sieve holes of the fixed screen 9 and the adjusting screen 10 is gradually increased to sort grains of different particle sizes from small to large. The grains to be dried are sorted into the same number of categories according to the number of drying chambers, so as to achieve independent drying of grains of different particle sizes, which not only improves the drying efficiency of grains, but also reduces heat waste and energy consumption.

[0041] Furthermore, a scraper frame 12 is rotatably arranged inside the feed frame 2 and above the screening frame 8, and the outer peripheral surface of the scraper frame 12 is in sliding contact with the upper surface of the fixed screen 9. A drive motor 5 is fixedly arranged on the left side of the feed frame 2, and the right end of the output shaft of the drive motor 5 is fixedly connected to the inside of the scraper frame 12.

[0042] The scraper frame 12 is controlled to rotate continuously by the output shaft of the driving motor 5 to continuously turn the grain inside the feeding frame 2, thereby greatly improving the grain sorting efficiency and preventing the grain from accumulating inside the screening frame 8.

[0043] Furthermore, a material guide rack 13 is fixedly provided at the bottom of the screening rack 8, and a material guide trough which is higher on the left and lower on the right is provided inside the material guide rack 13. A plurality of feeding ports 15 are provided on the left side of the drying cylinder 14, and one side of the feeding port 15 extends to the interior of the feed rack 2. The interior of the feeding port 15 is connected with the interior of the material guide rack 13, and an electrically controlled closing plate 16 is slidably provided on one side of the interior of the feeding port 15. By aligning the plurality of feeding ports 15 with the interior of the material guide rack 13 respectively, the feeding operation of grains of different particle sizes can be quickly performed in the plurality of drying chambers inside the drying cylinder 14.

[0044] It should be noted that after the fixed screen 9 and the adjustable screen 10 are used to sort the grains into different particle sizes, the grains of different particle sizes are successively fed into the interior of the drying cylinder 14 through the feed port 15 by the guide rack 13, thereby achieving customized drying conditions for the grains of different particle sizes, which not only ensures the drying efficiency of the grains, but also reduces the waste of heat.

[0045] Embodiment 2:

[0046] Specifically, the drying assembly includes a material distribution rack 17, the interior of the drying cylinder 14 is fixedly provided with the material distribution rack 17, and the material distribution rack 17 divides the interior of the drying cylinder 14 into a plurality of drying chambers, and the interior of the drying cylinder 14 is also rotatably provided with a plurality of material turning racks 22, and the plurality of material turning racks 22 are respectively located in the interiors of the plurality of drying chambers, and the interior of the material distribution rack 17 is also fixedly provided with a plurality of air blowing racks 24, and the interior of the material distribution rack 17 is provided with air guide ports 25, the interiors of the air guide ports 25 are respectively connected with the interiors of the plurality of air blowing racks 24, and the interiors of the plurality of air blowing racks 24 are all provided with flow control valves, wherein the air blowing ports of the plurality of air blowing racks 24 are respectively directed toward the interiors of the plurality of drying chambers;

[0047] Further, an air inlet interface 26 is rotatably provided on the right side of the drying drum 14, and the right side of the air inlet interface 26 extends to the right side of the drying rack 3, and a plurality of one-way exhaust valves 27 are fixedly provided on the left side of the drying drum 14, and the interiors of the plurality of one-way exhaust valves 27 are respectively connected to the interiors of the plurality of drying chambers, and a spiral rack 23 is fixedly provided inside the drying rack 3, and the surface of the drying drum 14 is in sliding contact with the interior of the spiral rack 23, and an air outlet interface 28 is fixedly provided on the right side of the drying rack 3;

[0048] It should be noted that after grains of different particle sizes are fed into different drying chambers, the turning rack 22 arranged inside the drying chamber is used to turn the grains, thereby increasing the contact area between the grains and the hot air, which greatly enhances the drying efficiency of the grains. In addition, according to the grains of different particle sizes, the blowing flow rate of the blowing rack 24 inside the corresponding drying chamber is controlled, and the grains of small particle sizes are dried at a low wind speed, and the grains of large particle sizes are dried at a high wind speed, thereby reducing heat waste, further improving drying efficiency, and reducing energy consumption. In addition, after the hot air inside each drying chamber is discharged through the one-way exhaust valve 27 on the left, the spiral rack 23 arranged along the surface of the drying cylinder 14 flows between the inside of the drying rack 3 and the surface of the drying cylinder 14. Such a structural design can utilize the circulating hot air to dry and insulate the drying cylinder 14, thereby further improving the utilization rate of heat, and to a great extent, it can also improve the drying efficiency of the grain inside the drying cylinder 14.

[0049] Furthermore, a driving rod 18 is rotatably provided on the left side of the material guide rack 13, and a driving gear 20 is fixedly provided on the surface of the driving rod 18. A plurality of transmission rods 19 are also rotatably provided on the left side of the drying cylinder 14, and a driven gear 21 meshing with the surface of the driving gear 20 is fixedly provided on the surfaces of the plurality of transmission rods 19. The left end of the driving rod 18 is fixedly connected to the right side of the scraper rack 12, and the right end of the driving rod 18 is movably connected to the inside of the drying cylinder 14 through an electric limit block. The right ends of the plurality of transmission rods 19 are respectively fixedly connected to the left ends of a plurality of turning racks 22.

[0050] Furthermore, a plurality of discharge ports 29 are provided on the right side of the drying drum 14 , a discharge pipe 30 is fixedly provided below the right side of the drying rack 3 , and an automatic control valve is provided above the inside of the discharge pipe 30 .

[0051] It should be noted that when drying grains, after feeding grains of different particle sizes into several drying chambers respectively, the output shaft of the driving motor 5 is used to drive the driving rod 18 to rotate. At this time, the right end of the driving rod 18 is controlled to cooperate with the internal rotation of the drying cylinder 14, and the driving gear 20 arranged on the surface of the driving rod 18 drives several driven gears 21 to rotate synchronously. The transmission rod 19 arranged inside the driven gear 21 drives several turning racks 22 inside the drying cylinder 14 to rotate, and the turning rack 22 is used to turn the grain inside the drying chamber, so that the hot air can contact the grain more evenly, reduce the waste of heat, further improve the drying efficiency, and reduce energy consumption. At the same time, the driving end of the servo electric cylinder 6 is used to control the adjusting rack 4 to slide up and down inside the adjusting slide slot 7, so that the drying cylinder 14 can be The grain in the upper part slides left and right under the drive of gravity and the turning rack 22, thereby further improving the drying efficiency of the grain and reducing the energy effect; after the grain is dried, when the grain is discharged, the driving end of the servo electric cylinder 6 is controlled to drive the adjusting rack 4 to slide to the bottom of the adjusting slide 7, and then the automatic control valve inside the discharge pipe 30 is opened to allow the grain inside the drying chamber to enter the inside of the discharge pipe 30 through the discharge port 29 on the right, and finally the dried grain is sent out, and the right end of the driving rod 18 is limited by the electric limit block inside the drying cylinder 14. At this time, the drying cylinder 14 rotates synchronously with the rotation of the driving rod 18, so that the grain in different drying chambers is sent out one after another, which not only realizes customized drying processing of grains of different particle sizes, but also can quickly classify the particle size of the discharged grain.

[0052] Embodiment 3:

[0053] Specifically, this embodiment discloses a drying method of a drum-type grain dryer, comprising the following steps:

[0054] Step 1: Feed the grains to be dried into the feed rack 2, and control the adjustable screen 10 to slide on the bottom of the fixed screen 9 through the driving ends of the two adjusting electric cylinders 11, and adjust the overlap of the sieve holes of the fixed screen 9 and the adjusting screen 10. First, control the overlap of the sieve holes of the fixed screen 9 and the adjusting screen 10 to be low, and sort out the grains with small particle sizes, and then gradually increase the overlap of the sieve holes of the fixed screen 9 and the adjusting screen 10, so that the grains with different particle sizes can be sorted from small to large.

[0055] Step 2: The scraper frame 12 is controlled to rotate continuously by the output shaft of the driving motor 5, and the grain inside the feeding frame 2 is continuously turned over, so that grains of different particle sizes fall into the inside of the guide frame 13, and the grains of different particle sizes are successively fed into the inside of the drying cylinder 14 through the feeding port 15 by the guide frame 13;

[0056] Step 3: After feeding grains of different particle sizes into different drying chambers, the turning rack 22 arranged inside the drying chamber is used to turn the grains. According to the grains of different particle sizes, the blowing flow rate of the blowing rack 24 inside the corresponding drying chamber is controlled. The grains of small particle sizes are dried at a low wind speed, and the grains of large particle sizes are dried at a high wind speed. In addition, the hot air inside each drying chamber is discharged through the one-way exhaust valve 27 on the left side, and then flows between the inside of the drying rack 3 and the surface of the drying cylinder 14 along the spiral rack 23 arranged on the surface of the drying cylinder 14, and the drying cylinder 14 is dried and heat-insulated by the circulating hot air.

[0057] Step 4. When drying grains, after feeding grains of different particle sizes into several drying chambers respectively, the output shaft of the driving motor 5 is used to drive the driving rod 18 to rotate. At this time, the right end of the driving rod 18 is controlled to cooperate with the internal rotation of the drying cylinder 14, and the driving gear 20 arranged on the surface of the driving rod 18 is used to drive several driven gears 21 to rotate synchronously. The transmission rod 19 arranged inside the driven gear 21 is used to drive several turning racks 22 inside the drying cylinder 14 to rotate, and the turning rack 22 is used to turn the grains inside the drying chamber, so that the hot air can contact the grains more evenly, reduce the waste of heat, further improve the drying efficiency, and reduce energy consumption. At the same time, the driving end of the servo electric cylinder 6 is used to control the adjusting rack 4 to adjust the slide The inside of the groove 7 slides up and down, allowing the grain inside the drying cylinder 14 to slide left and right under the drive of gravity and the turning rack 22, thereby further improving the drying efficiency of the grain and reducing the energy effect; after the grain is dried, when the grain is discharged, the driving end of the servo electric cylinder 6 is controlled to drive the adjusting rack 4 to slide to the bottom of the adjusting slide 7, and then the automatic control valve inside the discharge pipe 30 is opened to allow the grain inside the drying chamber to enter the inside of the discharge pipe 30 through the discharge port 29 on the right, and finally the dried grain is sent out, and the right end of the driving rod 18 is limited by the electric limit block inside the drying cylinder 14. At this time, the drying cylinder 14 rotates synchronously with the rotation of the driving rod 18, so that the grains in different drying chambers are sent out one after another.

[0058] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0059] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0060] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0061] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A drum-type grain dryer, comprising a fixed frame (1), a feeding frame (2) and a drying frame (3), wherein the feeding frame (2) is rotatably arranged on the left side inside the fixed frame (1), and the drying frame (3) is fixedly arranged on the right side of the feeding frame (2), characterized in that: An adjustment frame (4) is fixedly provided on the right side of the bottom of the drying frame (3), and the front and rear sides of the adjustment frame (4) are movably connected to the right side inside the fixed frame (1) respectively; A material dividing assembly is arranged inside the feeding rack (2), a drying cylinder (14) is rotatably arranged inside the drying rack (3), and a drying assembly is arranged inside the drying cylinder (14); The material distribution assembly comprises a screening frame (8), the screening frame (8) is fixedly arranged inside the feeding frame (2), a fixed screen (9) is fixedly arranged at the bottom of the screening frame (8), and an adjustable screen (10) is slidably arranged at the bottom of the fixed screen (9), and adjustable electric cylinders (11) are fixedly arranged on both sides of the bottom of the screening frame (8), and the driving ends of the two adjustable electric cylinders (11) are fixedly connected to the two sides of the adjustable screen (10) respectively; The drying component comprises a material distribution rack (17), the interior of the drying cylinder (14) is fixedly provided with the material distribution rack (17), and the material distribution rack (17) divides the interior of the drying cylinder (14) into a plurality of drying chambers, the interior of the drying cylinder (14) is also rotatably provided with a plurality of material turning racks (22), and the plurality of material turning racks (22) are respectively located in the interiors of the plurality of drying chambers, the interior of the material distribution rack (17) is also fixedly provided with a plurality of air blowing racks (24), and the interior of the material distribution rack (17) is provided with an air guide port (25), the interior of the air guide port (25) is respectively connected with the interior of the plurality of air blowing racks (24), and the interiors of the plurality of air blowing racks (24) are all provided with flow control valves, wherein the air blowing ports of the plurality of air blowing racks (24) are respectively directed toward the interiors of the plurality of drying chambers.

2. A drum type grain dryer according to claim 1, characterized in that: A servo electric cylinder (6) is fixedly arranged on the right side inside the fixed frame (1), and the driving end of the servo electric cylinder (6) is movably connected to the bottom of the adjustment frame (4). Adjustment slide grooves (7) are arranged on the front and rear sides of the right side inside the fixed frame (1), and the front and rear sides of the adjustment frame (4) are respectively slidably connected to the inside of the two adjustment slide grooves (7).

3. A drum type grain dryer according to claim 1, characterized in that: A scraper frame (12) is rotatably arranged inside the feed frame (2) and above the screening frame (8), and the outer peripheral surface of the scraper frame (12) is in sliding contact with the upper surface of the fixed screen (9). A drive motor (5) is fixedly arranged on the left side of the feed frame (2), and the right end of the output shaft of the drive motor (5) is fixedly connected to the inside of the scraper frame (12).

4. A drum type grain dryer according to claim 3, characterized in that: A material guide frame (13) is fixedly arranged at the bottom of the screening frame (8), and a material guide trough which is higher on the left and lower on the right is arranged inside the material guide frame (13); a plurality of material feeding ports (15) are arranged on the left side of the drying cylinder (14), and one side of the material feeding port (15) extends to the inside of the feeding frame (2); the inside of the material feeding port (15) is communicated with the inside of the material guide frame (13), and an electric control closing plate (16) is slidably arranged on one side of the inside of the material feeding port (15).

5. The drum type grain dryer according to claim 1, characterized in that: An air inlet interface (26) is rotatably provided on the right side of the drying cylinder (14), and the right side of the air inlet interface (26) extends to the right side of the drying rack (3). A plurality of one-way exhaust valves (27) are fixedly provided on the left side of the drying cylinder (14), and the interiors of the plurality of one-way exhaust valves (27) are respectively connected to the interiors of a plurality of drying chambers. A spiral rack (23) is fixedly provided inside the drying rack (3), and the surface of the drying cylinder (14) is in sliding contact with the interior of the spiral rack (23). An air outlet interface (28) is fixedly provided on the right side of the drying rack (3).

6. A drum type grain dryer according to claim 4, characterized in that: A driving rod (18) is rotatably provided on the left side of the material guide frame (13), and a driving gear (20) is fixedly provided on the surface of the driving rod (18). A plurality of transmission rods (19) are also rotatably provided on the left side of the drying cylinder (14), and a driven gear (21) meshing with the surface of the driving gear (20) is fixedly provided on the surface of the plurality of transmission rods (19). The left end of the driving rod (18) is fixedly connected to the right side of the scraper frame (12), and the right end of the driving rod (18) is movably connected to the inside of the drying cylinder (14) through an electric limit block. The right ends of the plurality of transmission rods (19) are respectively fixedly connected to the left ends of the plurality of material turning frames (22).

7. The drum type grain dryer according to claim 1, characterized in that: The right side of the drying cylinder (14) is also provided with a plurality of discharge ports (29), a discharge pipe (30) is fixedly provided below the right side of the drying rack (3), and an automatic control valve is provided above the inside of the discharge pipe (30).

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