A drying device for a grain dryer

Abstract

This application relates to the technical field of grain dryers, and in particular to a drying device for a grain dryer, which includes a housing and a diversion part arranged inside the housing. A heating box for drying grains is arranged on the side of the housing. The diversion part includes a guide panel and multiple grain discharging wheels for discharging grains. There are multiple groups of guide panels, and the multiple groups of guide panels are arranged at intervals. The multiple grain discharging wheels correspond to the gaps between two groups of guide panels. Each group of guide panels includes two. One side of each group of guide panels facing away from the grain discharging wheels abuts. The guide panel includes a base plate and an auxiliary plate. The base plate is arranged inside the housing, and the auxiliary plate is rotatably connected to the side of the base plate facing away from the ground. An auxiliary grain wheel for assisting in grain discharging is arranged inside the housing. The auxiliary grain wheel and the grain discharging wheel are arranged in the same horizontal plane. The auxiliary grain wheel corresponds to the central positions of the two guide panels in each group. An adjusting device for adjusting the position of the auxiliary plate is arranged on the housing. This application has the effect of adapting to the discharge of different types of grains.

Description

Technical Field

[0001] This application relates to the technical field of grain dryers, and in particular to a drying device for grain dryers. Background Art

[0002] Since the water content in grains directly affects the storage and transportation of grains, it is necessary to process the grains before storage to make the moisture in the grains meet the storage standards. If the moisture in the grains is too high, phenomena such as heating and mildew are likely to occur. Therefore, it is very necessary to dry the grains during storage and transportation. When drying grains, a grain dryer is usually used for drying.

[0003] In the related art regarding the structure of a grain dryer, it includes a frame and a grain buffer bin arranged on the frame. A grain discharging wheel is arranged at the bottom of the grain buffer bin. There are multiple grain discharging wheels, and multiple groups of guide panels are arranged above the grain discharging wheels. Each group of guide panels includes two, and the two guide panels are arranged in a V shape. Each two adjacent groups of guide panels are arranged at intervals, and the intervals between the grain discharging wheels and the guide panels correspond. When drying grains, the grains fall onto the guide panels through the grain buffer bin, then enter between the two groups of guide panels, and at the same time, the grain discharging wheels rotate to discharge the grains.

[0004] In the above-mentioned related art, when drying different types of grains, due to the different particle sizes and the like of different grains, it is necessary to adjust the discharging speed according to the type and moisture content of the grains. Adjusting the discharging efficiency of the grains only by changing the rotation speed of the grain discharging wheels is limited, and it cannot be applied to the discharging of different types of grains. Summary of the Invention

[0005] In order to adapt to the discharging of different types of grains, this application provides a drying device for a grain dryer.

[0006] The drying device for a grain dryer provided by this application adopts the following technical solution:

[0007] A drying device for a grain dryer, comprising a housing and a diversion part arranged inside the housing. A heating box for drying grains is arranged on the side of the housing. The diversion part includes a guide panel and a plurality of grain discharging wheels for discharging grains. There are multiple groups of the guide panels, and the multiple groups of guide panels are arranged at intervals. The plurality of grain discharging wheels correspond to the gaps between two groups of guide panels. Each group of the guide panels includes two. One side of each group of the guide panels facing away from the grain discharging wheels abuts against each other. The guide panel includes a base plate and an auxiliary plate. The base plate is arranged inside the housing. The auxiliary plate is rotatably connected to the side of the base plate facing away from the ground. An auxiliary grain wheel for assisting in grain discharging is arranged inside the housing. The auxiliary grain wheel and the grain discharging wheel are arranged in the same horizontal plane. The auxiliary grain wheel corresponds to the central positions of the two guide panels in each group. An adjusting device for adjusting the position of the auxiliary plate is arranged on the housing.

[0008] By adopting the above technical solution, during drying, according to different types or different drying requirements, the position of the auxiliary plate is adjusted through the adjusting device, so that one side of the auxiliary plate rotates to the position of the auxiliary grain wheel to form a new grain discharging channel. The auxiliary grain wheel and the grain discharging wheel discharge grains simultaneously, thereby adjusting the grain discharging efficiency to adapt to the discharge of different types of grains.

[0009] Optionally, the adjusting device includes an adjusting sleeve and an adjusting rod. The adjusting rod is arranged on the side of the auxiliary plate close to the ground. The end of the adjusting rod extends outside the auxiliary plate. A sliding groove is opened on the inner wall of the housing. The adjusting sleeve is slidably arranged in the sliding groove in the vertical direction. An adjusting groove is opened in the adjusting sleeve in the horizontal direction. The end of the adjusting rod is inserted into the adjusting groove.

[0010] By adopting the above technical solution, when the adjusting sleeve is moved, the adjusting sleeve drives the adjusting rod to move. The adjusting rod drives the auxiliary plate to rotate. At the same time, the adjusting rod moves inside the adjusting sleeve, thereby adjusting the position of the auxiliary plate and adjusting the auxiliary plate to different states to form a new grain discharging channel.

[0011] Optionally, the adjusting rods corresponding to the two guide panels in each group of the guide panels are both arranged in the adjusting groove. The auxiliary plate includes an inner plate and an outer plate. The outer plate is rotatably connected to the base plate. The inner plate is slidably arranged inside the outer plate. The adjusting rod is connected to the inner plate.

[0012] By adopting the above technical solution, when the adjusting sleeve moves, it drives the two adjusting rods to move simultaneously. At the same time, the inner plate slides inside the outer plate, so that the two inner plates can rotate simultaneously, reducing the phenomenon that one inner plate interferes with the rotation of the other inner plate and improving the stability of the inner plate during rotation.

[0013] Optionally, a partition is provided in the slide groove along the sliding direction of the adjustment sleeve, a through groove is opened on the adjustment sleeve along the vertical direction, the partition is arranged in the through groove to divide the adjustment groove into two equal parts, and the two adjustment rods are respectively arranged on both sides of the partition.

[0014] By adopting the above technical solution, a partition is set in the adjustment sleeve, and two adjustment rods are on both sides of the partition, so as to reduce the phenomenon of interference with the movement of another adjustment rod when the adjustment rod moves in the adjustment sleeve, so that the adjustment sleeve can stably drive the inner plate to rotate through the adjustment rod to adjust the position of the inner plate.

[0015] Optionally, the shell is provided with an installation groove connected to the slide groove, and a control device is arranged in the installation groove, the control device includes a control assembly, a control rod, a control gear and a control plate, the control plate is arranged in the installation groove, and there are multiple control plates and adjustment sleeves respectively, the control plate and the adjustment sleeve are connected on the side away from the adjustment rod, the control gear is rotatably arranged in the shell, a control tooth groove is provided on the control plate along the sliding direction of the adjustment sleeve, the control gear is meshed with the control tooth groove, the control rod is connected at the rotation center of the control gear, and the control assembly is arranged in the installation groove to drive the control rod to rotate.

[0016] By adopting the above technical solution, the control assembly drives the control rod to rotate, the rotation of the control rod drives the control gear to rotate, the control gear drives the control plate to move through the control tooth groove, and then drives the adjustment sleeve to move to adjust the position of the adjustment rod.

[0017] Optionally, the control component includes a driving member, a limiting member, a bevel gear set and an intermediate rod, the intermediate rod is rotatably arranged in an installation groove, the bevel gear set is arranged at the end of the intermediate rod, the intermediate rod and the control rod are connected through the bevel gear set, the driving member is arranged in the installation groove, the limiting member is arranged at the output end of the driving member, the driving member is connected to the intermediate rod through the limiting member, and the driving member is used to drive the intermediate rod to rotate.

[0018] By adopting the above technical solution, the driving member drives the intermediate rod to rotate through the limit member, and the intermediate rod drives the control rod to rotate through the bevel gear set, thereby adjusting the positions of multiple control panels at the same time, and then adjusting the positions of multiple groups of inner panels, thereby improving the adjustment efficiency.

[0019] Optionally, the limiting member includes a worm wheel and a worm, the worm wheel is sleeved on the outside of the intermediate rod, the worm is arranged at the output end of the driving member, and the worm wheel and the worm are meshed.

[0020] By adopting the above technical solution, the driving member drives the worm wheel to rotate through the worm, and the worm wheel drives the intermediate rod to rotate. The worm wheel and the worm are self-locking. After the position of the inner plate is adjusted by the adjusting sleeve, the stability of the adjusting sleeve is improved, thereby improving the stability of the inner plate.

[0021] Optionally, a side of the control plate close to the adjustment sleeve abuts against an edge of the slide groove.

[0022] By adopting the above technical solution, the edges of the control plate and the slide groove are abutted, and the connection between the slide groove and the mounting groove is blocked, thereby reducing the phenomenon of grain entering the mounting groove through the slide groove, thereby improving the stability of the coordination between the control gear and the control tooth groove.

[0023] Optionally, the inner wall of the sliding groove on a side close to the ground is inclined to form an inclined surface, and the edge of the inclined surface away from the installation groove is inclined in a direction toward the ground.

[0024] By adopting the above technical solution, after the grain enters the chute, it enters the inclined surface under the action of its own gravity, and then falls on the inclined surface, clearing the grain in the chute and reducing the phenomenon of interference with the movement of the adjustment sleeve due to the grain entering the chute.

[0025] Optionally, a sensor for detecting the temperature inside the shell is provided in the shell, a controller is provided on the shell, the controller is electrically connected to the sensor, and the controller is electrically connected to a switch of the heating box.

[0026] By adopting the above technical solution, a sensor and a controller are set to adjust the heating power of the heating box according to the temperature inside the shell, and then adjust the temperature inside the shell, so that the temperature inside the shell is maintained within a certain range, thereby improving the drying effect of the grain.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. When drying, grain is discharged through the gap between the two guide plates and the grain discharge wheel. When the grain discharge efficiency needs to be adjusted for different types of grain and drying conditions, the inner plate is driven to rotate through the driving member to form a new grain discharge channel between the two adjacent inner plates. At the same time, the grain is discharged through the auxiliary grain wheel to adjust the grain discharge efficiency, thereby adapting to the discharge of different types of grain. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is an overall schematic diagram of the drying equipment of the grain dryer according to an embodiment of the present application.

[0030] Figure 2 It is a partial view of the drying equipment of the grain dryer according to an embodiment of the present application.

[0031] Figure 3 It is a partial view of another perspective in the drying equipment of the grain dryer according to an embodiment of the present application.

[0032] Figure 4 It is a structural view of the guide panel in the drying equipment of the grain dryer according to an embodiment of the present application.

[0033] Figure 5 It is a view of another perspective of the guide panel in the drying equipment of the grain dryer according to an embodiment of the present application.

[0034] Figure 6 It is a structural view of the adjusting device in the drying equipment of the grain dryer according to an embodiment of the present application.

[0035] Figure 7 It is a structural view of the auxiliary plate in the drying equipment of the grain dryer according to an embodiment of the present application.

[0036] Figure 8 It is a structural view of the control device in the drying equipment of the grain dryer according to an embodiment of the present application.

[0037] Figure 9 It is a structural view of the sliding groove in the drying equipment of the grain dryer according to an embodiment of the present application.

[0038] Reference signs: 1, housing; 11, elevator; 12, screw conveyor; 13, heating box; 14, exhaust fan; 2, shunt part; 21, deflector; 3, guide panel; 31, auxiliary plate; 311, inner plate; 312, outer plate; 32, base plate; 4, grain discharging wheel; 5, auxiliary grain wheel; 6, adjusting device; 61, adjusting sleeve; 611, adjusting groove; 612, through groove; 62, adjusting rod; 7, sliding groove; 71, mounting groove; 72, partition; 8, control device; 81, control component; 811, driving part; 812, limiting part; 813, bevel gear set; 814, intermediate rod; 82, control rod; 83, control gear; 84, control plate; 841, control tooth groove; 9, inclined surface. Detailed implementation manners

[0039] The following will further describe the present application in detail Figures 1-9 in conjunction with the appended

[0040] A drying equipment of a grain dryer disclosed in the present application. Refer to Figure 1 and Figure 2The drying equipment of the grain dryer includes a shell 1 and an elevator 11. The elevator 11 is arranged on one side of the shell 1 for conveying grain to the top of the shell 1. A diverter 2 is arranged inside the shell 1. The diverter 2 is arranged near the bottom of the shell 1. A screw conveyor 12 is arranged inside the diverter 2. The screw conveyor 12 is used to convey grain to the elevator 11. A heating box 13 and an exhaust fan 14 are arranged on the side of the shell 1. The heating box 13 and the exhaust fan 14 are both connected to the inside of the shell 1. When drying grain, the grain is lifted to the top of the shell 1 by the elevator 11, and then the grain is conveyed into the shell 1. At the same time, the heating box 13 conveys hot air into the shell 1. After drying the grain, the hot air is discharged through the exhaust fan 14. After the grain passes through the diverter 2 in the shell 1 for drying, it enters the screw conveyor 12, and then enters the elevator 11 again through the screw conveyor 12 for cyclic drying. After the drying is completed, the discharge port of the elevator 11 is opened to discharge the grain for storage.

[0041] Reference Figure 3 and Figure 4 The flow dividing part 2 includes a guide panel 3 and a grain discharge wheel 4. The guide panel 3 is provided with multiple groups. The multiple groups of guide panels 3 are arranged in parallel and spaced in the horizontal direction. A guide plate 21 is arranged at the bottom of the guide panel 3. The guide plate 21 is arranged on the side of the guide panel 3 close to the adjacent guide panel 3. The grain is discharged through the guide plate 21. The grain discharge wheel 4 is arranged between two groups of adjacent guide panels 3, that is, the grain discharge wheel 4 is arranged at the guide plate 21. Each group of guide panels 3 includes two guide panels 3. The two guide panels 3 are arranged in a V shape, that is, one side of the two guide panels 3 is abutted, and the opposite side is arranged at intervals. The grain discharge wheel 4 is rotatably arranged in the shell 1. When it is necessary to discharge grain, the grain passes through the guide panel 3 and enters the grain discharge wheel 4, and the grain discharge wheel 4 rotates to discharge the grain.

[0042] Reference Figure 5 and Figure 6 The guide panel 3 includes an auxiliary plate 31 and a base plate 32. The base plate 32 is fixed in the shell 1 by bolts. The auxiliary plate 31 is arranged on the side of the base plate 32 away from the ground. The side of the auxiliary plate 31 away from the base plate 32 abuts against the auxiliary plate 31 on the adjacent guide panel 3 in a V shape. The auxiliary plate 31 and the base plate 32 are both arranged along the center line direction of the grain discharge wheel 4. The auxiliary plate 31 is rotatably arranged on the base plate 32. An auxiliary grain wheel 5 is rotatably arranged in the shell 1. The auxiliary grain wheel 5 has the same structure as the grain discharge wheel 4, and the auxiliary grain wheel 5 and the grain discharge wheel 4 are spaced apart in the same horizontal plane. The auxiliary grain wheel 5 is arranged between the two guide panels 3. When it is necessary to improve the grain discharge efficiency, the auxiliary plate 31 is rotated toward the auxiliary grain wheel 5 until the side of the auxiliary plate 31 away from the base plate 32 is rotated to the plane where the auxiliary grain wheel 5 is located, combined with Figure 7, at this time, the two auxiliary plates 31 are spaced apart to form a new grain discharging channel. When discharging grains, the auxiliary grain wheels 5 and the grain discharging wheel 4 rotate simultaneously to discharge grains, thereby adjusting the grain discharging efficiency.

[0043] Refer to Figure 5 and Figure 6 , an adjusting device 6 for adjusting the position of the auxiliary plate 31 is provided on the housing 1. The adjusting device 6 includes an adjusting sleeve 61 and an adjusting rod 62. The adjusting rod 62 is provided on the side of the auxiliary plate 31 close to the ground, and the adjusting rod 62 is arranged along the length direction of the auxiliary plate 31, and the end of the adjusting rod 62 extends to the side of the auxiliary plate 31. A sliding groove 7 is formed on the inner wall of the housing 1. The adjusting sleeve 61 is slidably arranged in the sliding groove 7 in the vertical direction. An adjusting groove 611 is formed in the adjusting sleeve 61 in the horizontal direction. The end of the adjusting rod 62 extends into the adjusting groove 611, and the adjusting rod 62 rotates while sliding along the length direction of the adjusting groove 611 in the adjusting groove 611. When it is necessary to adjust the position of the auxiliary plate 31, the adjusting sleeve 61 is slid to drive the auxiliary plate 31 to rotate through the adjusting rod 62, and at the same time, the adjusting rod 62 slides in the adjusting sleeve 61.

[0044] Refer to Figure 8 and Figure 9 , there are two groups of the adjusting device 6 corresponding to each group of guide panels 3, and the two groups are respectively arranged near the two ends of the guide panel 3. The adjusting rods 62 corresponding to the two guide panels 3 in each group are both arranged in the adjusting groove 611. The auxiliary plate 31 includes an inner plate 311 and an outer plate 312. The outer plate 312 is rotatably connected to the base plate 32. The inner plate 311 is slidably arranged in the outer plate 312. The adjusting rod 62 is arranged on the inner plate 311. When the adjusting sleeve 61 moves, it drives the two adjusting rods 62 to move. At the same time, the inner plate 311 slides in the outer plate 312, reducing the phenomenon that one inner plate 311 interferes with the rotation of another inner plate 311, so that the auxiliary plate 31 can rotate to the specified position.

[0045] Refer to Figure 9 , a partition plate 72 is arranged in the sliding groove 7. The partition plate 72 is arranged along the sliding direction of the adjusting sleeve 61. A through groove 612 is formed in the adjusting sleeve 61 in the vertical direction. The partition plate 72 is arranged in the through groove 612. The partition plate 72 divides the adjusting groove 611 into two equal parts. The two adjusting rods 62 arranged in the adjusting sleeve 61 are respectively arranged on both sides of the partition plate 72. When the adjusting sleeve 61 moves, the phenomenon that the adjusting rods 62 interfere with each other is reduced, so that the auxiliary plate 31 can be stably driven to rotate through the adjusting rod 62 when the adjusting sleeve 61 moves.

[0046] Refer to Figure 5 and Figure 8A mounting groove 71 is provided on the housing 1, and the mounting groove 71 is communicated with the slide groove 7. A control device 8 is provided in the mounting groove 71. The control device 8 includes a control assembly 81, a control rod 82, a control gear 83 and a control board 84. The control board 84 is provided on the side of the adjustment sleeve 61 away from the inner plate 311. The control board 84 is provided in the mounting groove 71, and the control board 84 is provided along the sliding direction of the adjustment sleeve 61. A plurality of control boards 84 are provided, and the plurality of control boards 84 and the plurality of adjustment sleeves 61 are provided in a one-to-one correspondence. There are two control rods 82, and the two are respectively arranged near the two ends of the adjustment rod 62. The control rod 82 is rotatably arranged in the installation groove 71. A plurality of control gears 83 and a control plate 84 are correspondingly arranged. A control tooth groove 841 is provided on the side of the control plate 84 away from the adjustment sleeve 61 along its length direction. The control gear 83 is meshed with the control tooth groove 841. The control rod 82 is connected at the center of the control gear 83. The control assembly 81 is arranged in the installation groove 71 and connected to the control rod 82 to drive the control rod 82 to rotate. The control assembly 81 drives the control gear 83 to rotate through the control rod 82. The control gear 83 adjusts the position of the adjustment sleeve 61 through the control plate 84, and then adjusts the position of the inner plate 311.

[0047] Reference Figure 8 The control assembly 81 includes a driving member 811, a stopper 812, a bevel gear set 813 and an intermediate rod 814. The intermediate rod 814 is arranged between the two control rods 82, and the ends of the intermediate rod 814 are arranged correspondingly to the ends of the control rods 82. The intermediate rod 814 and the control rods 82 are connected through the bevel gear set 813. The driving member 811 can be set as a motor, and the stopper 812 is arranged at the output end of the motor. The motor is connected to the intermediate rod 814 through the stopper 812. The motor stopper 812 drives the intermediate rod 814 to rotate, and the intermediate rod 814 drives the two control rods 82 to rotate at the same time through the bevel gear set 813, thereby improving the adjustment efficiency.

[0048] Reference Figure 8 The limiting member 812 includes a worm wheel and a worm screw. The worm wheel sleeve is arranged outside the intermediate rod 814. The worm wheel is arranged at the output end of the driving member 811, and the worm wheel and the worm screw are meshed. The driving member 811 drives the worm wheel to rotate through the worm screw, and the rotation of the worm wheel drives the intermediate rod 814 to rotate. The cooperation of the worm wheel and the worm screw has self-locking property. After adjusting the position of the adjustment sleeve 61, the deviation of the adjustment sleeve 61 is reduced, thereby improving the stability of the inner plate 311. The adjustment sleeve 61 is connected to the middle position of the control plate 84, and the control plate 84 is kept in contact with the edge of the chute 7. When the adjustment sleeve 61 moves to any position, the control plate 84 blocks the connection between the chute 7 and the installation groove 71. Reduce the phenomenon of grain entering the installation groove 71, and improve the stability of the cooperation between the control gear 83 and the control plate 84.

[0049] Reference Figure 9, the inner wall on one side of the chute 7 close to the ground is inclined to form an inclined surface 9, and the inclined side is inclined in the direction towards the ground along the edge on the side away from the mounting groove 71. This allows the grains that enter the chute 7 to fall outside the chute 7 through the inclined surface 9, reducing the phenomenon of the grains interfering with the movement of the adjusting sleeve 61 and improving the stability of the adjusting sleeve 61 during movement.

[0050] An induction component is provided in the housing 1. The induction component can be set as a temperature sensor for detecting the temperature inside the housing 1. A controller is provided on the housing 1. The signal receiving ends of the induction component and the controller are connected, and the controller is electrically connected to the switch of the heating box 13. When drying grains, the temperature inside the housing 1 is detected by the induction component. After detecting that the temperature inside the housing 1 exceeds a predetermined range, a signal is sent to the controller, and the controller controls the heating box 13 to change the power during operation to adjust the temperature inside the housing 1, so that a predetermined temperature range is maintained inside the housing 1 to dry the grains, improving the drying effect of the grains.

[0051] The implementation principle of this application is as follows: When drying grains, according to the type of grains and the drying requirements, the driving member 811 drives the adjusting sleeve 61 to move, and the adjusting sleeve 61 drives the inner plate 311 to rotate, so that a new grain discharge channel is formed between two adjacent inner plates 311, and the grains are discharged through the auxiliary grain wheel 5. The grain discharge wheel 4 and the auxiliary grain wheel 5 discharge grains simultaneously, thereby adjusting the grain discharge efficiency to adapt to the discharge of different types of grains.

[0052] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A drying device for a grain dryer, comprising a housing (1) and a diversion part (2) arranged inside the housing (1). A heating box (13) for drying grains is arranged on the side of the housing (1). It is characterized in that: The diversion part (2) includes a guide panel (3) and a plurality of grain discharging wheels (4) for discharging grains. A plurality of groups of the guide panels (3) are provided. The plurality of groups of the guide panels (3) are arranged at intervals. The plurality of grain discharging wheels (4) correspond to the gaps between two groups of the guide panels (3). Each group of the guide panels (3) includes two. One side of each group of the guide panels (3) facing away from the grain discharging wheels (4) abuts. The guide panel (3) includes a base plate (32) and an auxiliary plate (31). The base plate (32) is arranged inside the housing (1). The auxiliary plate (31) is rotatably connected to the side of the base plate (32) facing away from the ground. An auxiliary grain wheel (5) for assisting in grain discharging is arranged inside the housing (1). The auxiliary grain wheel (5) and the grain discharging wheels (4) are arranged in the same horizontal plane. The auxiliary grain wheel (5) corresponds to the central positions of the two guide panels (3) in each group. An adjusting device (6) for adjusting the position of the auxiliary plate (31) is arranged on the housing (1). The adjusting device (6) includes an adjusting sleeve (61) and an adjusting rod (62). The adjusting rod (62) is arranged on the side of the auxiliary plate (31) close to the ground. The end of the adjusting rod (62) extends to the outside of the auxiliary plate (31). A sliding groove (7) is formed on the inner wall of the housing (1). The adjusting sleeve (61) is slidably arranged in the sliding groove (7) in the vertical direction. An adjusting groove (611) is formed in the adjusting sleeve (61) in the horizontal direction. The end of the adjusting rod (62) is inserted into the adjusting groove (611). The corresponding adjusting rods (62) on each group of two guide panels (3) are all arranged in the adjusting groove (611). The auxiliary plate (31) includes an inner plate (311) and an outer plate (312). The outer plate (312) is rotatably connected to the base plate (32). The inner plate (311) is slidably arranged in the outer plate (312). The adjusting rod (62) is connected to the inner plate (311).

2. The drying device for a grain dryer according to claim 1, It is characterized in that: A partition plate (72) is arranged in the sliding groove (7) along the sliding direction of the adjusting sleeve (61). A through groove (612) is formed in the adjusting sleeve (61) in the vertical direction. The partition plate (72) is arranged in the through groove (612) to equally divide the adjusting groove (611) into two parts. The two adjusting rods (62) are respectively arranged on both sides of the partition plate (72).

3. The drying device for a grain dryer according to claim 1, It is characterized in that: The housing (1) is provided with a mounting groove (71) which is connected to the slide groove (7). A control device (8) is arranged in the mounting groove (71). The control device (8) comprises a control assembly (81), a control rod (82), a control gear (83) and a control plate (84). The control plate (84) is arranged in the mounting groove (71). A plurality of control plates (84) and an adjusting sleeve (61) are arranged correspondingly. The control plate (84) and the adjusting sleeve (61) are connected at a side away from the adjusting rod (62). The control gear (83) is rotatably arranged in the housing (1). A control tooth groove (841) is arranged on the control plate (84) along the sliding direction of the adjusting sleeve (61). The control gear (83) and the control tooth groove (841) are meshed. The control rod (82) and the control gear (83) are connected at the rotation center. The control assembly (81) is arranged in the mounting groove (71) to drive the control rod (82) to rotate.

4. The drying device of the grain dryer according to claim 3, Features: The control assembly (81) comprises a driving member (811), a limiting member (812), a bevel gear set (813) and an intermediate rod (814); the intermediate rod (814) is rotatably arranged in the mounting groove (71); the bevel gear set (813) is arranged at the end of the intermediate rod (814); the intermediate rod (814) and the control rod (82) are connected via the bevel gear set (813); the driving member (811) is arranged in the mounting groove (71); the limiting member (812) is arranged at the output end of the driving member (811); the driving member (811) is connected to the intermediate rod (814) via the limiting member (812); and the driving member (811) is used to drive the intermediate rod (814) to rotate.

5. The drying device of the grain dryer according to claim 4, Features: The limiting member (812) comprises a worm wheel and a worm, the worm wheel is sleeved on the outside of the intermediate rod (814), the worm is arranged at the output end of the driving member (811), and the worm wheel and the worm are meshed.

6. The drying device of the grain dryer according to claim 3, Features: The control plate (84) is in contact with the edge of the slide groove (7) on one side close to the adjustment sleeve (61).

7. The drying device of the grain dryer according to claim 6, Features: The inner wall of the sliding groove (7) on the side close to the ground is inclined to form an inclined surface (9), and the edge of the inclined surface (9) on the side away from the installation groove (71) is inclined in a direction toward the ground.

8. The drying device of the grain dryer according to claim 1, Features: A sensing element for detecting the temperature inside the shell (1) is arranged in the shell (1), and a controller is arranged on the shell (1); the controller and the sensing element are electrically connected, and the controller and the switch of the heating box (13) are electrically connected.

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