Grain drying and separating system based on dynamic sorting technology

Abstract

The invention discloses a drying and grain distributing system based on a dynamic sorting technology, relates to the technical field of drying, and solves the problem that an existing grain drying machine is poor in grain drying effect. A grain drying and separating system adopting the dynamic sorting technology comprises a grain drying machine, an elevator is arranged on one side of the grain drying machine, a downward flowing pipe is connected to the middle of the rear end face of the elevator, and a grain dynamic sorting mechanism located in the grain drying machine is arranged on the outer side of the end of the bottom of the downward flowing pipe. The grain dynamic sorting mechanism comprises a grain separation layer, a plurality of flowing ports and distribution gates with the same number as the flowing ports, and the downward flowing pipe is communicated with the interior of the grain separation layer. According to the cereal drying device, continuous closed circulation of cereals can be achieved, so that evaporation of water and drying uniformity are promoted, efficient and uniform drying of the cereals is achieved through the technical scheme, and the high-quality requirements of modern agriculture for cereal storage and processing are met.

Description

Technical Field

[0001] The invention relates to the technical field of drying, and in particular to a drying and grain sorting system using a dynamic sorting technology. Background Art

[0002] Drying refers to the process of removing solvents and retaining solid content in some way. It usually refers to the process of letting hot air evaporate and take away the water in the material. According to the three ways of heat transfer, heat conduction, heat convection and heat radiation, there are three corresponding ways of drying: drum drying, hot air drying and far infrared drying;

[0003] Grain dryer is a kind of equipment specially used to reduce the moisture content of grain. It heats the grain by heating the air flow and removes the excess moisture in the grain during the air circulation process to achieve the drying requirements of the grain. The main function of the grain dryer is to improve the drying efficiency of grain, avoid the influence of natural climate on grain drying, and ensure the uniformity of drying, which is conducive to the long-term storage of grain.

[0004] However, when the existing grain dryer is drying grains, the grains located in the middle of the grain dryer and the grains located on the outside are in different temperature environments, and the drying effect of the grains is poor; therefore, it does not meet the existing needs. In this regard, we propose a drying and grain sorting system with dynamic sorting technology. Summary of the invention

[0005] The object of the present invention is to provide a drying and grain sorting system with dynamic sorting technology to solve the problem that when the existing grain dryer mentioned in the above background technology performs grain drying operation, the grain located in the middle position inside the grain dryer and the grain located on the outside are in different temperature environments, resulting in poor drying effect on the grain.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a drying and grain sorting system of dynamic sorting technology, comprising a grain dryer, a hoist is provided on one side of the grain dryer, a downflow pipe is connected to the middle position of the rear end surface of the hoist, a grain dynamic sorting mechanism located inside the grain dryer is provided on the outer side of the bottom end of the downflow pipe, the grain dynamic sorting mechanism comprises a grain sorting layer, a plurality of flow ports and distribution gates having the same number as the flow ports, the downflow pipe is communicated with the interior of the grain sorting layer, the plurality of flow ports are all located on the lower end inner wall of the grain sorting layer, and the plurality of distribution gates are respectively installed inside the plurality of flow ports;

[0007] A grain circulation drying mechanism is provided below the grain dynamic sorting mechanism, and the grain circulation drying mechanism comprises two high-speed centrifugal fans, two centrifugal fan pipes, a drying layer, a rotating shaft, a circulation layer, a feeding pipe, a plurality of heating lamps, a plurality of turning leaves and a driving mechanism, wherein the two centrifugal fan pipes are respectively connected to the outer surfaces of the two high-speed centrifugal fans, and the other end of the centrifugal fan pipe is communicated with the interior of the drying layer;

[0008] A plurality of the heating lamps are fixedly installed in a ring shape on the upper side of the inner wall of the drying layer;

[0009] The plurality of flip leaves are fixedly sleeved on the outer surface of a rotating shaft, and the driving mechanism can drive the rotating shaft to rotate;

[0010] The circulation layer is communicated with the interior of the drying layer, the inner wall of the circulation layer is generally conical, the top of the discharge pipe is communicated with the interior of the circulation layer, and the bottom end of the discharge pipe is communicated with the interior of the elevator.

[0011] Preferably, a control panel is fixedly mounted on one side of the outer surface of the grain dryer, and the grain dryer, the grain dynamic sorting mechanism and the grain circulating drying mechanism are all electrically connected to the control panel.

[0012] Preferably, the driving mechanism comprises a stepping motor, the output shaft of the stepping motor is connected to a synchronous rotating shaft via a coupling, and the synchronous rotating shaft is connected in series with the rear end of the rotating shaft via a synchronous chain.

[0013] Preferably, the front and rear end surfaces of the rotating shaft are both located inside the grain dryer shell, and the rotating shaft located inside the grain dryer shell is connected to the grain dryer via a roller bearing.

[0014] Preferably, an upflow pipe is fixedly connected to the upper side of the rear end face of the elevator, a guide nozzle is connected to the lower end face of the upflow pipe, and a dust removal fan is fixedly installed on the upper end face of the guide nozzle.

[0015] Preferably, a slow-heat layer located on the upper side of the interior of the grain dryer is provided on the outer side of the bottom end of the guide nozzle, and a thermal insulation plate fixed to the interior of the grain dryer casing is provided between the slow-heat layer and the grain distribution layer.

[0016] Preferably, a vent is provided on both sides of the inner wall of the buffer layer, a ventilation blade is fixedly installed inside the vent, and a temperature sensor fixed to the inner wall of the buffer layer is provided on one side of the ventilation blade.

[0017] Preferably, a single-bar cylinder fixedly mounted inside the shell of the grain dryer is provided on one side of the temperature sensor, and a piston rod of the single-bar cylinder is connected to a sealing plate slidably connected to the grain dryer.

[0018] Preferably, an arc-shaped metal cover plate located on the outer surface of the grain dryer is provided behind the stepper motor, and the grain dryer and the arc-shaped metal cover plate are fixed by screws.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention adds grains to the interior of the elevator when it is necessary to dry the grains. At this time, the grains are transported to the interior of the grain distribution layer through the downflow pipe connected to the middle position of the rear end surface of the elevator. The distribution gates inside the flow ports fixedly installed on the inner wall of the lower end of the grain distribution layer can accurately control the flow rate and distribution of the grains when they enter the drying layer according to the preset drying parameters. The above technical solution can control the grains to be evenly distributed in the drying layer, thereby avoiding the problem of local grain overheating or uneven drying.

[0021] 2. The present invention generates a strong airflow through a high-speed centrifugal fan connected to the interior of the drying layer through a centrifugal fan tube, which can push the hot air to pass through the grain layer inside the drying layer at a certain speed and temperature to take away the moisture in the grain. At the same time, the heating lamp provides necessary thermal energy to ensure that the temperature of the hot air meets the drying requirements, and the stepping motor can drive the turning leaves to rotate. The rotating turning leaves can make the grains continuously turned and dispersed in the drying layer to increase the contact area between the grains and the hot air and improve the drying efficiency. After the initial drying is completed, the grains are returned to the interior of the elevator through the discharge pipe to form a closed loop. In this process, the grains are continuously turned in the closed loop to further promote the evaporation of moisture and the uniformity of drying. After multiple cycles, the grains reach the target moisture content and are transported to the interior of the slow-cooling layer by the elevator for cooling and balancing. The above technical scheme achieves efficient and uniform drying of the grains, meeting the high quality requirements of modern agriculture for grain storage and processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a front view of the internal structure of the present invention;

[0024] Figure 3 For the present invention Figure 2 A magnified view of the structure at center;

[0025] Figure 4 For the present invention Figure 2 A magnified view of the structure at B in the middle;

[0026] Figure 5 For the present invention Figure 2 A magnified view of the structure at C in the middle;

[0027] Figure 6 For the present invention Figure 2 Enlarged view of the structure at point D in the middle.

[0028] In the figure: 1. Grain dryer; 2. Control panel; 3. High-speed centrifugal fan; 4. Centrifugal fan pipe; 5. Elevator; 6. Downflow pipe; 7. Grain distribution layer; 8. Flow port; 9. Distribution gate; 10. Drying layer; 11. Heating lamp; 12. Rotating shaft; 13. Turning blade; 14. Stepping motor; 15. Synchronous rotating shaft; 16. Fan blade for ventilation; 17. Sealing plate; 18. Synchronous chain; 19. Circulation layer; 20. Downflow pipe; 21. Slow-down layer; 22. Upflow pipe; 23. Guide nozzle; 24. Dust removal fan; 25. Ventilation port; 26. Horizontal bar cylinder; 27. Temperature sensor; 28. Insulation board. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] See also Figures 1 to 6 An embodiment of the present invention is as follows: a drying and grain sorting system of dynamic sorting technology, comprising a grain dryer 1, a hoist 5 is provided on one side of the grain dryer 1, a downflow pipe 6 is connected to the middle position of the rear end surface of the hoist 5, a dynamic grain sorting mechanism located inside the grain dryer 1 is provided on the outer side of the bottom end of the downflow pipe 6, the dynamic grain sorting mechanism comprises a grain sorting layer 7, a plurality of flow ports 8 and distribution gates 9 the same number as the flow ports 8, the downflow pipe 6 is communicated with the interior of the grain sorting layer 7, the plurality of flow ports 8 are all located on the lower end inner wall of the grain sorting layer 7, and the plurality of distribution gates 9 are respectively installed inside the plurality of flow ports 8.

[0031] A control panel 2 is fixedly installed on one side of the outer surface of the grain dryer 1, and the grain dryer 1, the grain dynamic sorting mechanism and the grain circulation drying mechanism are all electrically connected to the control panel 2; the grain dryer 1, the grain dynamic sorting mechanism and the grain circulation drying mechanism can be controlled by the control panel 2;

[0032] When it is necessary to dry the grains, the grains are added to the interior of the elevator 5. At this time, the grains are transported to the interior of the grain distribution layer 7 through the downflow pipe 6 connected to the middle position of the rear end face of the elevator 5. The distribution gate 9 inside the flow port 8 fixedly installed on the inner wall of the lower end of the grain distribution layer 7 can accurately control the flow and distribution of the grains when entering the drying layer 10 according to the preset drying parameters. The above technical solution can control the grains to be evenly distributed in the drying layer 10, so as to avoid the problem of local grain overheating or uneven drying.

[0033] A grain circulation drying mechanism is provided below the grain dynamic sorting mechanism, and the grain circulation drying mechanism comprises two high-speed centrifugal fans 3, two centrifugal fan pipes 4, a drying layer 10, a rotating shaft 12, a circulation layer 19, a feeding pipe 20, a plurality of heating lamps 11, a plurality of flip blades 13 and a driving mechanism, wherein the two centrifugal fan pipes 4 are respectively connected to the outer surfaces of the two high-speed centrifugal fans 3, and the other end of the centrifugal fan pipe 4 is communicated with the interior of the drying layer 10;

[0034] A plurality of heating lamps 11 are fixedly installed in a ring shape on the upper side of the inner wall of the drying layer 10;

[0035] The plurality of flip leaves 13 are fixedly sleeved on the outer surface of the rotating shaft 12, and the driving mechanism can drive the rotating shaft 12 to rotate;

[0036] The circulation layer 19 is connected with the interior of the drying layer 10, and the inner wall of the circulation layer 19 is generally conical. The top of the discharge pipe 20 is connected with the interior of the circulation layer 19, and the bottom of the discharge pipe 20 is connected with the interior of the elevator 5; the driving mechanism includes a stepper motor 14, the output shaft of the stepper motor 14 is connected with a synchronous shaft 15 through a coupling, and the synchronous shaft 15 is connected in series with the rear end of the shaft 12 through a synchronous chain 18; the strong airflow generated by the high-speed centrifugal fan 3 connected with the interior of the drying layer 10 through the centrifugal fan pipe 4 can push the hot air to pass through the grain layer inside the drying layer 10 at a certain speed and temperature to take away the moisture in the grain. At the same time, the necessary heat energy is provided by the heating lamp 11 to ensure that the temperature of the hot air meets the drying requirements, and the stepper motor 14 is connected with the drying layer 10 through the centrifugal fan pipe 4 to generate a strong airflow. The motor 14 can drive the synchronous rotating shaft 15 connected thereto and the rotating shaft 12 connected in series with the synchronous rotating shaft 15 through a synchronous chain 18 to rotate. The rotating rotating shaft 12 can drive a plurality of turning leaves 13 fixedly mounted on the outer surface of the rotating shaft 12 to rotate. The rotating turning leaves 13 can cause the grains to be continuously turned and dispersed in the drying layer 10 to increase the contact area between the grains and the hot air and improve the drying efficiency. After the preliminary drying is completed, the grains are returned to the interior of the elevator 5 through the discharge pipe 20 to form a closed loop. In this process, the grains are continuously turned in the closed loop, further promoting the evaporation of water and the uniformity of drying. The above technical solution achieves efficient and uniform drying of the grains, meeting the high quality requirements of modern agriculture for grain storage and processing.

[0037] The front and rear end surfaces of the rotating shaft 12 are both located inside the outer shell of the grain dryer 1, and the rotating shaft 12 located inside the outer shell of the grain dryer 1 is connected to the grain dryer 1 through a roller bearing; the roller bearing structure between the grain dryer 1 and the rotating shaft 12 can support the rotating shaft 12 to prevent the rotating shaft 12 from tilting during rotation.

[0038] An upflow pipe 22 is fixedly connected to the upper side of the rear end face of the elevator 5, a flow guide nozzle 23 is connected to the lower end face of the upflow pipe 22, and a dust removal fan 24 is fixedly installed on the upper end face of the flow guide nozzle 23; a slow-release layer 21 located on the upper side of the interior of the grain dryer 1 is provided on the outer side of the bottom end of the flow guide nozzle 23, and an insulation plate 28 fixed to the interior of the outer shell of the grain dryer 1 is provided between the slow-release layer 21 and the grain distribution layer 7; when the grain reaches the target moisture content, it is transported to the interior of the slow-release layer 21 through the upflow pipe 22 connected to the upper side of the rear end face of the elevator 5 and the flow guide nozzle 23 connected to the lower end face of the upflow pipe 22, and dust in the grain can be removed by the dust removal fan 24 fixedly installed on the upper end face of the flow guide nozzle 23;

[0039] A vent 25 is provided on both sides of the inner wall of the slow-release layer 21, and a ventilation fan blade 16 is fixedly installed inside the vent 25, and a temperature sensor 27 fixed to the inner wall of the slow-release layer 21 is provided on one side of the ventilation fan blade 16; when the grains enter the slow-release layer 21, they can be air-cooled by the ventilation fan blade 16, and the slow-release layer 21 can be isolated from the hot air inside the drying layer 10 by the insulation board 28 located below the slow-release layer 21, so as to create a relatively low temperature and low wind speed environment inside the slow-release layer 21, which is used to further balance the moisture distribution inside the grains and gradually reduce the surface temperature of the grains, so as to protect the grains and avoid heat damage;

[0040] The temperature inside the buffer layer 21 can be monitored in real time through the temperature sensor 27, and its data can be transmitted to the control panel 2. The control panel 2 can control the operating efficiency of the ventilation fan blades 16 through the values ​​monitored by the temperature sensor 27, thereby controlling the temperature inside the buffer layer 21.

[0041] One side of the temperature sensor 27 is provided with a horizontal-bar cylinder 26 fixedly installed inside the outer shell of the grain dryer 1, and the piston rod of the horizontal-bar cylinder 26 is connected to a sealing plate 17 which is slidably connected to the grain dryer 1; when it rains outside, the sealing plate 17 is pushed upward by the horizontal-bar cylinder 26, and the vent 25 can be sealed by the upwardly moving sealing plate 17, and the sealing vent 25 can prevent external rainwater from entering the interior of the slow-release layer 21 through the vent 25.

[0042] An arc-shaped metal cover plate located on the outer surface of the grain dryer 1 is provided behind the stepper motor 14, and the grain dryer 1 and the arc-shaped metal cover plate are fixed by screws; the arc-shaped metal cover plate can protect the stepper motor 14, and when the stepper motor 14 fails, the arc-shaped metal cover plate can be removed to repair the stepper motor 14.

[0043] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A grain drying and sorting system using dynamic sorting technology, comprising a grain dryer (1), characterized in that: A lifting machine (5) is provided on one side of the grain dryer (1), a downflow pipe (6) is connected to the middle position of the rear end surface of the lifting machine (5), a dynamic grain sorting mechanism located inside the grain dryer (1) is provided on the outer side of the bottom end of the downflow pipe (6), the dynamic grain sorting mechanism comprises a grain sorting layer (7), a plurality of flow ports (8) and distribution gates (9) the same number as the flow ports (8), the downflow pipe (6) is communicated with the interior of the grain sorting layer (7), the plurality of flow ports (8) are all located on the lower end inner wall of the grain sorting layer (7), and the plurality of distribution gates (9) are respectively installed inside the plurality of flow ports (8); A grain circulation drying mechanism is provided below the grain dynamic sorting mechanism, the grain circulation drying mechanism comprising two high-speed centrifugal fans (3), two centrifugal fan pipes (4), a drying layer (10), a rotating shaft (12), a circulation layer (19), a feeding pipe (20), a plurality of heating lamps (11), a plurality of turning blades (13) and a driving mechanism, the two centrifugal fan pipes (4) are respectively connected to the outer surfaces of the two high-speed centrifugal fans (3), and the other end of the centrifugal fan pipe (4) is communicated with the interior of the drying layer (10); The plurality of heating lamps (11) are fixedly mounted in a ring shape on the upper side of the inner wall of the drying layer (10); The plurality of flip leaves (13) are all fixedly sleeved on the outer surface of the rotating shaft (12), and the driving mechanism can drive the rotating shaft (12) to rotate; The circulation layer (19) is in communication with the interior of the drying layer (10), the inner wall of the circulation layer (19) is generally conical, the top of the discharge pipe (20) is in communication with the interior of the circulation layer (19), and the bottom end of the discharge pipe (20) is in communication with the interior of the elevator (5).

2. According to the drying and sorting system of the dynamic sorting technology of claim 1, it is characterized by: A control panel (2) is fixedly mounted on one side of the outer surface of the grain dryer (1), and the grain dryer (1), the grain dynamic sorting mechanism and the grain circulation drying mechanism are all electrically connected to the control panel (2).

3. The drying and grain sorting system of the dynamic sorting technology according to claim 1 is characterized by: The driving mechanism comprises a stepping motor (14), the output shaft of the stepping motor (14) is connected to a synchronous rotating shaft (15) via a coupling, and the synchronous rotating shaft (15) is connected in series with the rear end of the rotating shaft (12) via a synchronous chain (18).

4. The drying and grain sorting system of the dynamic sorting technology according to claim 1 is characterized by: The front and rear end surfaces of the rotating shaft (12) are both located inside the outer shell of the grain dryer (1), and the rotating shaft (12) located inside the outer shell of the grain dryer (1) is connected to the grain dryer (1) via a roller bearing.

5. The drying and grain sorting system of the dynamic sorting technology according to claim 1 is characterized by: An upflow pipe (22) is fixedly connected to the upper side of the rear end face of the elevator (5), a flow guide nozzle (23) is connected to the lower end face of the upflow pipe (22), and a dust removal fan (24) is fixedly installed on the upper end face of the flow guide nozzle (23).

6. The drying and grain sorting system of the dynamic sorting technology according to claim 5 is characterized by: A slow-release layer (21) located on the upper side of the interior of the grain dryer (1) is provided on the outer side of the bottom end of the flow guide nozzle (23), and a heat-insulating plate (28) fixed to the interior of the outer shell of the grain dryer (1) is provided between the slow-release layer (21) and the grain separation layer (7).

7. The drying and grain sorting system of the dynamic sorting technology according to claim 6 is characterized by: A vent (25) is provided on both sides of the inner wall of the slow-release layer (21), a ventilation blade (16) is fixedly installed inside the vent (25), and a temperature sensor (27) fixed to the inner wall of the slow-release layer (21) is provided on one side of the ventilation blade (16).

8. The drying and grain sorting system of the dynamic sorting technology according to claim 7 is characterized by: A single-bar cylinder (26) fixedly mounted inside the shell of the grain dryer (1) is provided on one side of the temperature sensor (27); a piston rod of the single-bar cylinder (26) is connected to a sealing plate (17) slidably connected to the grain dryer (1).

9. The drying and grain sorting system of the dynamic sorting technology according to claim 3 is characterized by: An arc-shaped metal cover plate is provided behind the stepper motor (14) and is located on the outer surface of the grain dryer (1), and the grain dryer (1) and the arc-shaped metal cover plate are fixed by screws.

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