Novel continuous circulation dual-purpose grain drying machine

Abstract

The utility model belongs to the technical field of grain drying, and particularly relates to a novel continuous circulation dual-purpose grain drying machine which comprises a drying machine body, a front air chamber, a rear air chamber, a cyclone separator and a fan. The dryer main body comprises a grain storage box; a plurality of groups of drying mechanisms are mounted at the bottom of the grain storage box; the drying mechanism comprises a drying box and a tempering box, and the tempering box is located below the drying box; the drying box and the tempering box are arranged in multiple layers from top to bottom and are communicated with each other; a plurality of groups of air inlet assemblies are mounted in the drying box from top to bottom; an air outlet assembly is installed between every two adjacent air inlet assemblies. A cooling box is mounted at the bottom of the lowermost tempering box; a discharging box is mounted at the bottom of the drying box; a discharging hopper is mounted at the bottom of the discharging box; the front air chamber is installed on the left side of the dryer body. The rear air chamber is installed on the right side of the drying machine body. The grain drying machine has two operation functions of continuous drying and circulating drying, and can meet the drying requirements of different grains.

Description

Technical Field

[0001] The utility model belongs to the technical field of grain drying, in particular to a novel continuous circulation dual-purpose grain drying machine. Background Art

[0002] Since grain contains a lot of nutrients such as starch and protein, if it is stored in a humid environment, it is easy to mold and rot, resulting in the loss of nutrients, deterioration of taste, and the release of harmful gases, and even causing food poisoning. Therefore, keeping the storage area dry is an important measure to prevent moisture, which can effectively prevent grain from getting damp and moldy;

[0003] Grain dryer is a combination of machinery used for rapid drying and storage of grain in large-scale agriculture and industry. Existing grain dryers include two types: high-temperature continuous type and low-temperature circulation type.

[0004] High-temperature continuous dryers use a relatively high hot air temperature, with a large processing capacity, a high one-time precipitation range, and a low drying cost. They are suitable for the operation mode of centralized grain purchase, centralized stacking, and centralized drying. However, due to the constraints of drying technology and equipment structure, it is not possible to dry high-moisture grain immediately after collection and to dry it by category, and cannot meet the actual use needs in the high temperature and high humidity environment in central and southern my country.

[0005] Low-temperature circulating dryer is mainly used for the quality preservation of high-moisture rice. It can be used alone or in parallel. It uses a lower hot air temperature to effectively ensure the quality of rice after drying. The germination rate and edible taste are not affected. However, for high-moisture materials such as corn and wheat, it has defects such as low efficiency, high energy consumption, and increased breakage rate after drying, and has certain limitations in use. Utility Model Content

[0006] In order to make up for the shortcomings of the prior art and solve the above technical problems, the utility model proposes a new continuous cycle dual-purpose grain dryer, which has two operating functions of continuous drying and batch cycle drying, and can meet the drying of different grains. At the same time, it can overcome the shortcomings of the existing continuous grain dryer, which is bulky and has a single drying variety. Compared with the batch cycle dryer, it has the technical advantages of high efficiency and low operating cost. The specific structural design of the utility model is as follows:

[0007] The new continuous circulation dual-purpose grain dryer includes a dryer body, a front air chamber, a rear air chamber, a brake dragon and a fan;

[0008] The main body of the dryer comprises a grain storage box; two feeding ports are provided on the top of the grain storage box; a plurality of drying mechanisms are installed at the bottom of the grain storage box; the drying mechanisms comprise a drying box and a slow reviving box, and the slow reviving box is located below the drying box; the drying box and the slow reviving box are arranged in multiple layers from top to bottom and are interconnected;

[0009] Multiple groups of air inlet components are installed from top to bottom in the drying box, and each group of air inlet components includes multiple air inlet angle components, and the air inlet angle components are installed in the drying box; air outlet components are installed between adjacent air inlet components, and each group of air outlet components includes multiple air outlet angle components, and the air outlet angle components are installed in the drying box; the air inlet angle components and the air outlet angle components are arranged alternately up and down;

[0010] Each of the air inlet angles is provided with an air inlet slot on the left side wall of the drying box, and the air inlet slot is connected to the front air chamber; each of the air outlet angles is provided with an air outlet slot on the right side wall of the drying box, and the air outlet slot is connected to the rear air chamber; there is a certain height difference between the air inlet slot and the air outlet slot;

[0011] A cooling box is installed at the bottom of the most lower slow-release box, and the internal and external structures of the cooling box are the same as those of the drying box; a discharge box is installed at the bottom of the drying box; and a discharge hopper is installed at the bottom of the discharge box;

[0012] A front air chamber is installed on the left side of the dryer body, and the front air chamber is designed as a variable cross-section structure from bottom to top; an air inlet is opened on the front air chamber;

[0013] A rear air chamber is installed on the right side of the dryer body; a partition is installed in the middle of the rear air chamber, and the partition divides the rear air chamber into two upper and lower chambers; a distance is left between the side of the rear air chamber close to the cooling box and the cooling box;

[0014] The rear air chamber is provided with two air outlets, and the air outlets are connected to the two chambers above and below the rear air chamber; the two air outlets are connected to a brake dragon equipped with a fan;

[0015] Preferably, a three-way valve is installed at the bottom of the discharge hopper; an elevator is installed on the dryer body; the bottom of the elevator is connected to one of the three-way valves; and the top of the elevator is connected to one of the feed ports.

[0016] Preferably, a fixing plate is installed inside the grain storage box;

[0017] The fixed plate is provided with uniformly arranged first material troughs, and the first material troughs correspond to the air inlet angles below one by one; a slide plate is slidably connected to the upper side of the fixed plate; the slide plate is provided with uniformly arranged second material troughs, and the second material troughs are staggered with the first material troughs in the initial state;

[0018] The right side of the slide plate is provided with an electric telescopic rod installed on the grain storage box, and the extension shaft of the electric telescopic rod is fixedly connected to the slide plate; the left and right sides of the slide plate are fixedly connected to the grain storage box with right-angle blocks, and the slide plate is located below the right-angle blocks, and when the slide plate slides back and forth, the slide plate cannot be separated from the bottom of the right-angle blocks;

[0019] Preferably, between two adjacent second material troughs, a push block is fixedly connected to the upper surface of the slide plate.

[0020] Preferably, the air inlet angle shape and the air outlet angle shape have the same structure;

[0021] The air inlet angle and the air outlet angle both include triangular blocks; triangular plates are fixedly mounted on both ends of each triangular block, and the triangular blocks are fixedly mounted on the side walls; the triangular plates on both sides of the triangular blocks are rotatably connected to two rotating rods; two V-shaped plates are rotatably connected to the two rotating rods;

[0022] The bottom of the two V-shaped plates on each of the air inlet angle and the air outlet angle is rotatably connected to a driving plate; a sliding groove is provided on the driving plate; a slider is slidably connected in the sliding groove, and a threaded groove is provided in the middle of the slider;

[0023] A threaded rod is threadedly engaged in the two threaded grooves on each air inlet angle and air outlet angle, and the threaded rod has a middle portion as a dividing line, and the threads on both sides of the dividing line are opposite; adjacent threaded rods are fixedly connected, and the threaded rods fixedly connected to each other are driven by a servo motor;

[0024] Preferably, the surface of the V-shaped plate is smooth.

[0025] Preferably, evenly arranged upper guide plates are installed in the discharge box; two opposite lower guide plates are installed on both sides of each upper guide plate, and the bottom of the lower guide plate is arc-shaped;

[0026] A rotating shaft is rotatably connected between the upper guide plate and the lower guide plate, and the rotating shaft rotates inside the discharge box and is driven by a driving motor; each of the rotating shafts is equipped with blades arranged evenly;

[0027] Preferably, the blade comprises a fixed sheet and a sliding sheet; the fixed sheet is fixedly mounted on the rotating shaft; and the sliding sheet slides inside the fixed sheet.

[0028] The beneficial effects of the utility model are as follows:

[0029] 1. The new continuous cycle dual-purpose grain dryer described in the utility model has two operating functions: continuous drying and batch cycle drying. It can meet the drying needs of different grains and overcome the shortcomings of existing continuous grain dryers, such as large equipment and single drying variety. Compared with batch cycle dryers, it has the technical advantages of high efficiency and low operating cost. At the same time, a negative pressure chamber is formed inside the entire dryer, which is conducive to the outward transfer of moisture inside the grain grains and can also reduce the heat loss inside the dryer, achieving high efficiency and energy saving effects.

[0030] 2. The new continuous cycle dual-purpose grain dryer described in the utility model can flexibly switch between continuous drying operation and batch cycle drying operation mode by adjusting the working state of the fan, three-way valve, elevator, and grain discharge drive motor. When the dryer performs continuous drying operation, all fans work at the same time. The dryer has a high drying efficiency and precipitation range, which is suitable for the precipitation needs of high-moisture grains such as corn and wheat; when the dryer performs batch cycle drying operation, the lower fan works and the upper fan does not work. The upper drying box can be used as a slow recovery box. The dryer has a high slow recovery drying time ratio, which is suitable for the quality preservation drying needs of materials such as rice and soybeans.

[0031] 3. The new continuous circulation dual-purpose grain dryer described in the utility model is provided with a slide plate that slides back and forth. During the process of the slide plate sliding back and forth, it will drive the second material trough and the grain in the second material trough to move back and forth. During the continuous back and forth movement of the second material trough, it will overlap with the first material trough and then stagger. When the second material trough overlaps with the first material trough, the grain in the second material trough will fall into the drying box through the first material trough. Since the first material trough corresponds to the air inlet angle one by one, the fallen grain will fall above the air inlet angle and then flow downward along the air inlet angle. In this process, the grain can be made to fall intermittently, and the amount of grain falling each time is relatively uniform, thereby avoiding a large deviation in the amount of falling grain, which affects the drying effect of the grain.

[0032] 4. The new continuous circulation dual-purpose grain dryer described in the utility model can avoid the situation where the distance between adjacent air inlet angles and adjacent air outlet angles is fixed when drying grains with large particle sizes by increasing the distance between two adjacent air inlet angles and two adjacent air outlet angles, resulting in grains with larger particle sizes being unable to flow through between two adjacent air inlet angles or air outlet angles in time, thereby causing the grains to accumulate between two adjacent air inlet angles or air outlet angles. In severe cases, the distance between adjacent air inlet angles or air outlet angles will be blocked, resulting in the inability to dry the grains.

[0033] 5. The new continuous cycle dual-purpose grain dryer described in the utility model can avoid the situation where the distance between two adjacent air inlet angles and two adjacent air outlet angles is fixed when drying grains with small particle sizes, resulting in the thickness of the grain flowing through the two air inlet angles or the air outlet angles being too thick, thereby failing to fully contact with the hot air and reducing the drying effect of the grain. Therefore, the dryer body can dry grains of different particle sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The utility model will be further described below in conjunction with the accompanying drawings.

[0035] Figure 1It is a structural principle diagram of the grain dryer of the utility model in the main viewing direction and the side viewing direction;

[0036] Figure 2 It is an overall schematic diagram of the grain dryer in the utility model;

[0037] Figure 3 It is a structural diagram of the hoist in the utility model;

[0038] Figure 4 It is the internal structure diagram of the dryer body in the utility model;

[0039] Figure 5 It is a structural diagram of the drying box in the utility model;

[0040] Figure 6 This is the internal structure diagram of the drying box in the utility model as viewed from the right;

[0041] Figure 7 This is the internal structure diagram of the drying box in the utility model when viewed from the left;

[0042] Figure 8 It is the internal structure diagram of the discharge box in the utility model;

[0043] Fig. 9 It is a structural diagram of the wind inlet angle and the wind outlet angle in the utility model;

[0044] Fig.10 This utility model Figure 4 Sectional view at AA;

[0045] Fig.11 This utility model Fig.10 A partial enlarged view of point B in the middle.

[0046] In the figure: 1. grain storage box; 11. feeding port; 12. fixing plate; 13. first trough; 14. slide plate; 15. second trough; 16. electric telescopic rod; 17. right angle block; 18. push block; 2. drying box; 21. air inlet angle; 22. air outlet angle; 23. air inlet slot; 24. air outlet slot; 211. triangle block; 212. triangle plate; 213. V-shaped plate; 214. drive plate; 215. slide slot; 2 16. Slider; 217. Threaded rod; 218. Servo motor; 3. Suspension box; 31. Cooling box; 4. Discharge box; 41. Upper guide plate; 42. Lower guide plate; 43. Rotating shaft; 44. Fixed plate; 45. Sliding plate; 5. Discharge hopper; 51. Three-way valve; 52. Elevator; 6. Front air chamber; 61. Air inlet; 7. Rear air chamber; 71. Partition; 72. Air outlet; 73. Fan; 74. Brake. DETAILED DESCRIPTION

[0047] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0048] Embodiment 1:

[0049] like Figures 1 to 11 As shown, the novel continuous cycle dual-purpose grain dryer described in the utility model comprises a dryer body, a front air chamber 6, a rear air chamber 7, a brake dragon 74 and a fan 73;

[0050] The main body of the dryer comprises a grain storage box 1; two feeding ports 11 are provided on the top of the grain storage box 1; a plurality of drying mechanisms are installed at the bottom of the grain storage box 1; the drying mechanisms comprise a drying box 2 and a slow reviving box 3, and the slow reviving box 3 is located below the drying box 2; the drying box 2 and the slow reviving box 3 are arranged in multiple layers from top to bottom and are interconnected;

[0051] Multiple groups of air inlet components are installed from top to bottom in the drying box 2, and each group of air inlet components is composed of multiple air inlet angles 21, and the air inlet angles 21 are installed in the drying box 2; air outlet components are installed between adjacent air inlet components, and each group of air outlet components is composed of multiple air outlet angles 22, and the air outlet angles 22 are installed in the drying box 2; the air inlet angles 21 and the air outlet angles 22 are arranged alternately up and down;

[0052] Each of the air inlet angles 21 is disposed on the left side wall of the drying box 2, facing the front air chamber 6, and has an air inlet slot 23, which is connected to the front air chamber 6; each of the air outlet angles 22 is disposed on the right side wall of the drying box 2, facing the rear air chamber 7, and has an air outlet slot 24, which is connected to the rear air chamber 7; there is a certain height difference between the air inlet slot 23 and the air outlet slot 24;

[0053] A cooling box 31 is installed at the bottom of the lowermost slow-down box 3, and the internal and external structures of the cooling box 31 are the same as those of the drying box 2; a discharge box 4 is installed at the bottom of the drying box 2; and a discharge hopper 5 is installed at the bottom of the discharge box 4;

[0054] A front air chamber 6 is installed on the left side of the dryer body, and the front air chamber 6 is designed as a variable cross-section structure from bottom to top; an air inlet 61 is opened on the front air chamber 6;

[0055] A rear air chamber 7 is installed on the right side of the dryer body; a partition 71 is installed in the middle of the rear air chamber 7, and the partition 71 divides the rear air chamber 7 into two upper and lower chambers; a distance is left between the side of the rear air chamber 7 close to the cooling box 31 and the cooling box 31;

[0056] The rear air chamber 7 is provided with two air outlets 72, and the air outlets 72 are connected to the two upper and lower chambers of the rear air chamber 7; the two air outlets 72 are connected to a brake dragon 74 equipped with a fan 73;

[0057] In this embodiment, a three-way valve 51 is installed at the bottom of the discharge hopper 5; a lift 52 is installed on the dryer body; the bottom of the lift 52 is connected to one of the valves of the three-way valve 51; the top of the lift 52 is connected to one of the feed ports 11;

[0058] Specifically, before drying the grain, firstly control the two fans 73 to work. When the fans 73 are working, the gas in the rear air chamber 7 can be extracted. Since the drying box 2 is connected with the rear air chamber 7 through the air outlet slot 24, the gas in the drying box 2 can be extracted into the rear air chamber 7, and then discharged through the fan 73. At the same time, the heated gas is passed into the front air chamber 6. Then, the hot air entering the front air chamber 6 will enter the drying box 2 through the air inlet slot 23, and the amount of hot air entering the front air chamber 6 is less than the amount of gas extracted by the fan 73. Since the amount of hot air entering the drying box 2 is less than the amount of gas extracted by the fan 73, a negative pressure chamber is formed inside the entire dryer body. Then, the grain to be dried is introduced into the grain storage box 1 from the feed port 11, and the grain to be dried can be dried.

[0059] More specifically, when the grain is being dried, the grain that enters the grain storage box 1 will continue to fall downward. Since a plurality of drying mechanisms are installed at the bottom of the grain storage box 1, and the drying mechanisms include a drying box 2 and a slow revival box 3, and the slow revival box 3 is located below the drying box 2, the fallen grain will pass through the drying box 2 and the slow revival box 3 in the drying mechanism in turn. Since the drying box 2 is provided with staggered air inlet components and air outlet components, the fallen grain will first fall above the evenly arranged air inlet angle 21, and then the grain will fall downward along both sides of the air inlet angle 21, and then the grain will fall above the evenly arranged air outlet angle 22, and then the grain will fall downward along the air outlet angle 22. The two drying boxes 2 are staggered and arranged downward, so that the grain can flow downward in an S shape in the drying box 2. At the same time, the hot air entering the front air chamber 6 will enter different drying boxes 2 through the evenly arranged air inlet slots 23. The hot air entering the drying box 2 can fully contact with the grain flowing downward in an S shape, thereby ensuring the uniformity of grain drying. Since there is a certain height difference between the air inlet slots 23 and the air outlet slots 24, under the action of the fan 73, the hot air entering the drying box 2 from the air inlet slot will first move downward to the position of the air outlet slot 24, and then enter the rear air chamber 7 through the air outlet slot 24, and then enter the fan 73. When the gas enters the fan 73, the dust impurities in the gas will be separated by the cyclone 74, and then the dust-removed gas will be discharged to the outside.

[0060] Furthermore, since multiple sets of drying mechanisms are installed at the bottom of the grain storage box 1, when the grain falls from the bottom of the top drying box 2, it will fall into the top slow-release box 3, and then continue to fall downward into the next drying box 2. The multiple drying boxes 2 can dry the fallen grains multiple times and continuously, thereby further improving the drying effect of the grains. The fallen grains will then fall into the cooling box 31. Since the internal and external structures of the cooling box 31 are the same as those of the drying box 2, the grains falling from the cooling box 31 are also The air flows downward in an S shape. Since a negative pressure cavity is formed inside the dryer body and there is a distance between the side of the rear air chamber 7 close to the cooling box 31 and the cooling box 31, the external air will be sucked into the cooling box 31 through the air outlet slot 24 on the cooling box 31. The natural air entering the cooling box 31 will cool the fallen grains. Since the cooling box 31 is connected to the front air chamber 6, the air in the cooling box 31 will enter the front air chamber 6 through the air inlet slot 23, mix with the hot air in the front air chamber 6, and then follow the hot air into the drying box 2.

[0061] Furthermore, after the grain passes through the cooling box 31, the grain will fall into the discharge hopper 5. Since a three-way valve 51 is provided at the discharge port of the discharge hopper 5, the grain that meets the storage requirement in moisture content can be directly discharged out of the dryer by adjusting the valve, and the grain that does not meet the storage requirement in moisture content can be introduced into the elevator 52, and then enter the grain storage section of the dryer again for cyclic drying.

[0062] Embodiment 2:

[0063] A fixing plate 12 is installed inside the grain storage box 1;

[0064] The fixed plate 12 is provided with uniformly arranged first material troughs 13, and the first material troughs 13 correspond to the air inlet angles 21 below one by one; a slide plate 14 is slidably connected to the upper side of the fixed plate 12; the slide plate 14 is provided with uniformly arranged second material troughs 15, and the second material troughs 15 are staggered with the first material troughs 13 in the initial state;

[0065] The right side of the slide plate 14 is provided with an electric telescopic rod 16 on the grain storage box 1, and the elongated axis of the electric telescopic rod 16 is fixedly connected to the slide plate 14; the left and right sides of the slide plate 14 are fixedly connected to the grain storage box 1 with right-angle blocks 17, and the slide plate 14 is located below the right-angle blocks 17, and when the slide plate 14 slides back and forth, the slide plate 14 cannot be separated from the bottom of the right-angle blocks 17;

[0066] In this embodiment, between two adjacent second material troughs 15, a push block 18 is fixedly connected to the upper surface of the slide plate 14;

[0067] Specifically, when the grain falls into the grain storage box 1, the grain will first accumulate on the slide plate 14, and the grain will fill the second trough 15. When the grain thickness in the grain storage box 1 reaches the middle position of the grain storage box 1, the electric telescopic rod 16 is controlled to continuously extend and contract back and forth, thereby pushing the slide plate 14 to slide back and forth on the fixed plate 12. During the sliding back and forth of the slide plate 14, the second trough 15 and the grain in the second trough 15 will be driven to move back and forth. During the continuous back and forth movement of the second trough 15, it will contact with the first trough 15. The grooves 13 overlap and then stagger. When the second trough 15 overlaps with the first trough 13, the grain in the second trough 15 will fall into the drying box 2 through the first trough 13. Since the first trough 13 corresponds to the air inlet angle 21 one by one, the fallen grain will fall on the air inlet angle 21 and then flow downward along the air inlet angle 21. In this process, the grain can be intermittently dropped, and the amount of grain dropped each time is relatively uniform, thereby avoiding a large deviation in the amount of dropped grain, which affects the drying effect of the grain.

[0068] More specifically, due to the existence of the right-angle block 17, the right-angle block 17 can guide the grain, so that the grain is accumulated between the two right-angle blocks 17, so that the grain can better fill the second trough 15;

[0069] Furthermore, since a push block 18 is fixedly connected to the slide plate 14 between two adjacent second troughs 15 , the push block 18 can be driven to move back and forth during the back and forth movement of the slide plate 14 . The back and forth moving push block 18 can push the grain to move, thereby pushing the grain into the second trough 15 .

[0070] Embodiment three:

[0071] The structure of the air inlet angle 21 and the air outlet angle 22 is the same;

[0072] The air inlet angle 21 and the air outlet angle 22 both include a triangular block 211; a triangular plate 212 is fixedly installed at both ends of each triangular block 211, and the triangular block 211 is fixedly installed on the side wall; the triangular plates 212 on both sides of the triangular block 211 are rotatably connected to two rotating rods; two V-shaped plates 213 are rotatably connected to the two rotating rods;

[0073] The bottom of the two V-shaped plates 213 on each of the air inlet angle 21 and the air outlet angle 22 is rotatably connected to a driving plate 214; a sliding groove 215 is provided on the driving plate 214; a sliding block 216 is slidably connected in the sliding groove 215, and a threaded groove is provided in the middle of the sliding block 216;

[0074] A threaded rod 217 is threadedly engaged in the two thread grooves on each air inlet angle 21 and air outlet angle 22, and the threaded rod 217 has the middle as a dividing line, and the threads on both sides of the dividing line are opposite; the adjacent threaded rods 217 are fixedly connected, and the threaded rods 217 that are fixedly connected to each other are driven by a servo motor 218;

[0075] In this embodiment, the surface of the V-shaped plate 213 is a smooth surface;

[0076] Specifically, due to the different grain sizes of different grains, when it is necessary to dry grains with larger grain sizes, the servo motor 218 is controlled to rotate forward, thereby driving the multiple threaded rods 217 connected to each other to rotate forward. Since the threaded rod 217 uses the middle part as the dividing line, and the threads on both sides of the dividing line are opposite, the two sliders 216 are driven to approach each other during the forward rotation of the threaded rod 217, and the two driving plates 214 are driven to approach each other, and the two V-shaped plates 213 are driven to rotate toward the middle position with the two rotating rods as the center. When the V-shaped plates 213 rotate to the middle position, the V-shaped plates 213 rotate to the middle position. When the distance between two adjacent air inlet angles 21 and two adjacent air outlet angles 22 increases, the distance between the adjacent air inlet angles 21 and the adjacent air outlet angles 22 is fixed when drying grains with large particle sizes, so that grains with large particle sizes cannot flow through between the two adjacent air inlet angles 21 or air outlet angles 22 in time, so that the grains are accumulated between the two adjacent air inlet angles 21 or air outlet angles 22. In serious cases, the distance between the adjacent air inlet angles 21 or air outlet angles 22 is blocked, resulting in the inability to dry the grains.

[0077] More specifically, since the driving plate 214 is rotatably connected to the V-shaped plate 213, the V-shaped plate 213 is always vertically downward under the limit of the slider 216 and the threaded rod 217. When the two V-shaped plates 213 rotate to the middle position, the driving plate 214 will be driven to move upward. At this time, the slide groove 215 will slide along the slider 216 to adapt to the position of the V-shaped plate 213 after rotation.

[0078] Furthermore, when it is necessary to dry grains with small particle sizes, the servo motor 218 is controlled to reverse, thereby driving the interconnected threaded rod 217 to reverse. When the threaded rod 217 reverses, the two sliders 216 are driven to move away from each other, and the two driving plates 214 are driven to move away from each other, and the driving plates 214 drive the two V-shaped plates 213 to rotate to the opposite side. When the V-shaped plates 213 rotate, the distance between the two adjacent air inlet angles 21 and air outlet angles 22 becomes smaller. Therefore, when drying grains with small particle sizes, it is possible to avoid that the distance between the adjacent air inlet angles 21 and air outlet angles 22 is fixed, resulting in the thickness of the grain flowing between the two air inlet angles 21 or the air outlet angles 22 being too thick, thereby failing to fully contact with the hot air, thereby reducing the drying effect of the grain. Therefore, the dryer body can dry grains with different particle sizes.

[0079] Furthermore, since the drive plate 214 is rotatably connected to the V-shaped plate 213, the V-shaped plate 213 is always vertically downward under the limitation of the slider 216 and the threaded rod 217. When the two V-shaped plates 213 rotate to opposite sides, the drive plate 214 will be driven to move downward. At this time, the slide groove 215 will slide along the slider 216 to adapt to the position of the V-shaped plate 213 after rotation.

[0080] Embodiment 4:

[0081] The discharge box 4 is provided with evenly arranged upper guide plates 41; each upper guide plate 41 is provided with two opposite lower guide plates 42 on both sides, and the bottom of the lower guide plate 42 is arc-shaped;

[0082] A rotating shaft 43 is rotatably connected between the upper guide plate 41 and the lower guide plate 42, and the rotating shaft 43 rotates inside the discharge box 4 and is driven by a driving motor; each rotating shaft 43 is mounted with blades arranged evenly;

[0083] In this embodiment, the blade includes a fixed sheet 44 and a sliding sheet 45; the fixed sheet 44 is fixedly mounted on the rotating shaft 43; the sliding sheet 45 slides inside the fixed sheet 44;

[0084] Specifically, when the grains fall from the cooling box 31, they flow downward along the evenly arranged upper guide plates 41, and the grains flowing through the upper guide plates 41 fall on the lower guide plates 42. When the dryer body is working, the driving motor is controlled to rotate cyclically, thereby driving the rotating shaft 43 and the blades on the rotating shaft 43 to rotate. During the rotation of the blades, the grains on the lower guide plates 42 can be scraped off, and the rotating blades can also scrape off the impurities on the lower guide plates 42.

[0085] More specifically, since the blade includes a fixed sheet 44 and a sliding sheet 45, the fixed sheet 44 is fixedly mounted on the rotating shaft 43, and the sliding sheet 45 slides inside the fixed sheet 44, when the blade rotates, after the rotating sliding sheet 45 contacts the grain, the sliding sheet 45 will slide into the fixed sheet 44 under the obstruction of the grain. In this process, it can be avoided that the length of the blade is fixed, resulting in the blade with a fixed length squeezing the grain after contacting the grain, causing the grain to be damaged. The basic principle, main features and advantages of the utility model are shown and described above. The technicians in this industry should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model will also have various changes and improvements, and these changes and improvements all fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A new type of continuous cycle dual-purpose grain dryer, characterized in that: It comprises a dryer body, a front air chamber (6), a rear air chamber (7), a brake drum (74) and a fan (73); The main body of the dryer comprises a grain storage box (1); two feed ports (11) are provided on the top of the grain storage box (1); a plurality of drying mechanisms are installed at the bottom of the grain storage box (1); the drying mechanisms comprise a drying box (2) and a slow reviving box (3), and the slow reviving box (3) is located below the drying box (2); the drying box (2) and the slow reviving box (3) are arranged in multiple layers from top to bottom and are interconnected; A plurality of groups of air inlet components are installed from top to bottom in the drying box (2), and each group of air inlet components is composed of a plurality of air inlet angles (21), and the air inlet angles (21) are installed in the drying box (2); air outlet components are installed between adjacent air inlet components, and each group of air outlet components is composed of a plurality of air outlet angles (22), and the air outlet angles (22) are installed in the drying box (2); the air inlet angles (21) and the air outlet angles (22) are arranged in an alternating manner up and down; Each of the air inlet angles (21) is provided with an air inlet slot (23) on the left side wall of the drying box (2) facing the front air chamber (6), and the air inlet slot (23) is communicated with the front air chamber (6); each of the air outlet angles (22) is provided with an air outlet slot (24) on the right side wall of the drying box (2) facing the rear air chamber (7), and the air outlet slot (24) is communicated with the rear air chamber (7); there is a certain height difference between the air inlet slot (23) and the air outlet slot (24); A cooling box (31) is installed at the bottom of the lowest slow recovery box (3), and the internal and external structures of the cooling box (31) are the same as those of the drying box (2); a discharge box (4) is installed at the bottom of the drying box (2); and a discharge hopper (5) is installed at the bottom of the discharge box (4); A front air chamber (6) is installed on the left side of the dryer body, and the front air chamber (6) is designed to have a variable cross-section structure from bottom to top; an air inlet (61) is opened on the front air chamber (6); A rear air chamber (7) is installed on the right side of the dryer body; a partition (71) is installed in the middle of the rear air chamber (7), and the partition (71) divides the rear air chamber (7) into two upper and lower chambers; a distance is left between the side of the rear air chamber (7) close to the cooling box (31) and the cooling box (31); The rear air chamber (7) is provided with two air outlets (72), and the air outlets (72) are communicated with two upper and lower chambers of the rear air chamber (7); the two air outlets (72) are communicated with a brake dragon (74) equipped with a fan (73).

2. The novel continuous cycle dual-purpose grain dryer according to claim 1 is characterized in that: A three-way valve (51) is installed at the bottom of the discharge hopper (5); a lift (52) is installed on the dryer body; the bottom of the lift (52) is connected to one of the valves of the three-way valve (51); and the top of the lift (52) is connected to one of the feed ports (11).

3. The novel continuous cycle dual-purpose grain dryer according to claim 2 is characterized in that: A fixing plate (12) is installed inside the grain storage box (1); The fixed plate (12) is provided with uniformly arranged first material troughs (13), and the first material troughs (13) correspond one-to-one to the air inlet angles (21) below; a slide plate (14) is slidably connected to the top of the fixed plate (12); the slide plate (14) is provided with uniformly arranged second material troughs (15), and the second material troughs (15) are staggered with the first material troughs (13) in an initial state; The right side of the slide plate (14) is provided with an electric telescopic rod (16) on the grain storage box (1), and the extension axis of the electric telescopic rod (16) is fixedly connected to the slide plate (14); the left and right sides of the slide plate (14) are fixedly connected to the grain storage box (1), and the slide plate (14) is located below the right angle block (17). When the slide plate (14) slides back and forth, the slide plate (14) cannot be separated from the bottom of the right angle block (17).

4. The novel continuous cycle dual-purpose grain dryer according to claim 3 is characterized in that: Between two adjacent second material troughs (15), a push block (18) is fixedly connected to the upper surface of the slide plate (14).

5. The novel continuous cycle dual-purpose grain dryer according to claim 4 is characterized in that: The structure of the air inlet angle (21) and the air outlet angle (22) is the same; The air inlet angle (21) and the air outlet angle (22) both comprise triangular blocks (211); triangular plates (212) are fixedly mounted on both side ends of each triangular block (211), and the triangular blocks (211) are fixedly mounted on the side walls; two rotating rods are rotatably connected to the triangular plates (212) on both sides of the triangular block (211); and two V-shaped plates (213) are rotatably connected to the two rotating rods; The bottom of the two V-shaped plates (213) on each of the air inlet angle (21) and the air outlet angle (22) is rotatably connected to a driving plate (214); a sliding groove (215) is provided on the driving plate (214); a sliding block (216) is slidably connected in the sliding groove (215), and a threaded groove is provided in the middle of the sliding block (216); A threaded rod (217) is threadedly engaged in the two threaded grooves on each air inlet angle (21) and air outlet angle (22), and the threaded rod (217) has a middle portion as a dividing line, and the threads on both sides of the dividing line are opposite; adjacent threaded rods (217) are fixedly connected, and the threaded rods (217) that are fixedly connected to each other are driven by a servo motor (218).

6. The novel continuous cycle dual-purpose grain dryer according to claim 5 is characterized in that: The surface of the V-shaped plate (213) is a smooth surface.

7. The novel continuous cycle dual-purpose grain dryer according to claim 6 is characterized in that: The discharge box (4) is provided with evenly arranged upper guide plates (41); two opposite lower guide plates (42) are provided on both sides of each upper guide plate (41), and the bottom of the lower guide plate (42) is arc-shaped; A rotating shaft (43) is rotatably connected between the upper guide plate (41) and the lower guide plate (42), and the rotating shaft (43) rotates inside the discharge box (4) and is driven by a driving motor; each rotating shaft (43) is mounted with blades that are evenly arranged.

8. The novel continuous cycle dual-purpose grain dryer according to claim 7 is characterized in that: The blade comprises a fixed sheet (44) and a sliding sheet (45); the fixed sheet (44) is fixedly mounted on the rotating shaft (43); and the sliding sheet (45) slides inside the fixed sheet (44).

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