Conveying device for grain drying

Abstract

This invention relates to the field of grain conveying equipment, and more particularly to a conveying device for grain drying. The device includes a frame, an upper cylinder and a lower cylinder spaced apart within an inner cavity, and a drive belt rotatably mounted on the upper and lower cylinders. The frame has a feed inlet at its bottom and a discharge outlet at its top. The conveying device includes hoppers spaced apart from the drive belt. A rotatable adjusting wall is formed on the side wall of each hopper away from the drive belt. The adjusting wall switches between a guiding state and an operating state. In the guiding state, the adjusting wall extends obliquely outward toward the opening of the hopper; in the operating state, it extends obliquely inward toward the opening of the hopper. The conveying device also includes a drive mechanism capable of driving the hoppers from the feed inlet to the top of the upper cylinder and from the discharge outlet to the bottom of the lower cylinder into the operating state. This invention effectively solves the problems existing in the prior art by providing a movable adjusting wall in the hopper.

Description

Technical Field

[0001] This invention relates to the field of grain conveying equipment, and more particularly to a conveying device for grain drying. Background Technology

[0002] When drying grains such as wheat and corn, it is often necessary to lift the grain from the bottom of the dryer to the top, as shown in patent publication number CN202346309U, which discloses a bucket elevator used in conjunction with a grain dryer. Bucket elevators are commonly used grain conveying devices.

[0003] Currently, the structure of bucket elevators used for grain drying is often as disclosed in patent CN213504376U, which is a sinking grain lifting mechanism. The buckets are driven to rotate and move by a conveyor belt or chain. The buckets receive the grain at the feed inlet at the bottom of the conveyor, and when the buckets rotate at the top of the conveyor, the centrifugal force and gravity of the grains are used to throw the grains to the discharge outlet.

[0004] The applicant discovered that when the hopper receives grain at the inlet, a larger hopper opening reduces the likelihood of the grain falling to the bottom, thus minimizing damage to the grain when the hopper rotates to scrape material at the bottom. A higher outward inclination of the hopper's outer wall also reduces the likelihood of material being constrained by the outer wall when the hopper is thrown from the top of the conveyor, making it easier for the grain to be thrown to the outlet and reducing the probability of it falling to the bottom of the lifting channel, thereby reducing damage during the falling and repeated lifting process. Therefore, a higher outward inclination of the hopper's outer wall results in greater grain integrity and higher hopper receiving and throwing efficiency.

[0005] The applicant also discovered that for enclosed-channel bucket elevators using scattering buckets, the bucket speed during grain lifting is generally above 2 meters per second. Since the lifting height for large-scale grain drying is typically above 15 meters, the change in bucket wind resistance significantly impacts overall energy consumption. In some operating conditions, bucket wind resistance accounts for 28% to 40% of the elevator's overall energy consumption. For every 10% increase in the bucket's wind-receiving area during lifting, wind resistance increases by 18% to 22%. Therefore, while optimizing the bucket's outer wall angle to improve grain integrity and lifting efficiency, reducing the impact of bucket wind resistance on the overall load is a pressing issue that needs to be addressed. Summary of the Invention

[0006] To address the aforementioned technical problems, this invention provides a conveying device for grain drying, which effectively solves the problems existing in the prior art by setting a movable adjustable wall in the hopper.

[0007] To address the aforementioned problems, this invention provides a grain drying conveying device, comprising a frame with an inner cavity, an upper cylinder and a lower cylinder spaced apart within the inner cavity, and a drive belt rotatably mounted on the upper and lower cylinders. The frame has a feed inlet at its bottom and a discharge outlet at its top. The conveying device includes hoppers spaced apart from the drive belt, with a rotatable adjusting wall formed on the sidewall of each hopper away from the drive belt. The adjusting wall switches between a guiding state and an operating state. In the guiding state, the adjusting wall extends obliquely outward toward the opening of the hopper; in the operating state, the adjusting wall extends obliquely inward toward the opening of the hopper. The conveying device further includes a drive mechanism capable of driving the hoppers to the operating state during movement from the feed inlet to the top of the upper cylinder and during movement from the discharge outlet to the bottom of the lower cylinder.

[0008] Furthermore, the driving mechanism includes a driving arm rotatably connected to the hopper and a driving rail disposed on the frame. The driving arm has a driving end and is pulsatorically connected to the adjusting wall. When the hopper drives the driving arm to move until the driving end contacts the driving rail, the driving rail can push the driving arm to rotate away from the moving direction of the hopper, so that the driving arm drives the adjusting wall to rotate from the guiding state to the operating state.

[0009] Furthermore, the drive mechanism includes a first link hinged to the hopper, and the first link is hinged to the drive arm.

[0010] Furthermore, the conveying device also includes a pin and a power unit that drives the pin to move. After the drive arm drives the adjusting wall to the operating state, the power unit can drive the pin to move in order to stop or release the rotation of the adjusting wall.

[0011] Furthermore, the power unit includes a power arm rotatably disposed in the hopper and a spring disposed between the pin and the hopper. The power arm is capable of being drivenly connected to the pin, and the power arm is disposed on the side of the drive arm facing the direction of travel of the hopper.

[0012] When the hopper moves the power arm to contact the drive rail, the drive rail can push the power arm to rotate away from the direction of movement of the hopper, so that the power arm drives the pin to release the adjusting wall.

[0013] The spring can drive the pin to stop the adjusting wall.

[0014] Furthermore, a rotating seat is formed at the hinge position between the power arm and the hopper, and the rotating seat is integrally formed with the pin. A driving seat is formed at the hinge position between the drive arm and the hopper, and the surface of the driving seat is provided with a socket for the pin to be inserted.

[0015] Furthermore, the drive rail includes a limiting section and a pushing section arranged along the travel direction of the hopper, wherein the pushing section protrudes from the limiting section on the side facing the hopper, so that...

[0016] When the power arm moves to the limiting section, it can be pushed to cause the pin to release the adjusting wall;

[0017] When the drive arm moves to the limit section position, the adjusting wall can rotate to the material guiding state. When the drive arm moves to the push section position, the push section can drive the arm to rotate so that the adjusting wall moves to the operating state.

[0018] Furthermore, the frame is provided with the drive rail at the position of the upper cylinder, and the drive rail further includes a guide section disposed between the limiting section and the pushing section;

[0019] The limiting section of the drive rail at the upper cylinder position extends from the upper side of the center of the upper cylinder to the upper side of the lower edge of the discharge port. The guide section is configured such that when the drive arm of the hopper moves to the guide section position, the outer edge of the adjusting wall of the hopper moves from the upper side of the lower edge of the discharge port to the lower side of the lower edge of the discharge port.

[0020] Furthermore, the frame is provided with the drive rail at the lower cylinder position, and the lower edge of the feed inlet has an inclined plate extending into the inner cavity. The drive rail at the lower cylinder position is configured as follows.

[0021] The limiting section extends from the lower side of the center of the lower cylinder to the upper side of the upper edge of the feed inlet, and the pushing section is disposed on the upper side of the limiting section;

[0022] The limiting section has a transition protrusion at the lower edge of the feed inlet. The transition protrusion is configured such that when the drive arm moves to the position of the transition protrusion, the adjusting wall of the hopper moves from the lower side of the inclined plate to the upper side of the inclined plate.

[0023] Furthermore, the latch is configured as an electric latch.

[0024] The beneficial effect of the present invention is that by setting a movable adjustable wall in the hopper, the problems existing in the prior art are effectively solved. Attached Figure Description

[0025] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0026] Figure 1 This is a schematic diagram of a structure according to an embodiment of the present invention.

[0027] Figure 2 for Figure 1 A schematic diagram of a partial cross-sectional view along the AA direction.

[0028] Figure 3 for Figure 1 A schematic diagram of the hopper structure in the illustrated embodiment.

[0029] Figure 4 for Figure 2 A magnified schematic diagram of the structure at point B in the middle.

[0030] Figure 5 for Figure 2 A magnified schematic diagram of the structure at point C.

[0031] Figure 6 for Figure 5 A schematic diagram of a partial cross-sectional structure along the DD direction.

[0032] The components are as follows: 1. Frame; 2. Upper cylinder; 3. Lower cylinder; 4. Drive belt; 5. Feed inlet; 6. Discharge outlet; 7. Hopper; 701. Adjusting wall; 8. Drive arm; 801. Drive seat; 9. Drive rail; 901. Limiting section; 902. Pushing section; 903. Guide section; 904. Transition protrusion; 10. First connecting rod; 11. Second connecting rod; 12. Pin; 13. Power arm; 1301. Rotating seat; 14. Spring; 15. Insertion hole; 16. Inclined plate. Detailed Implementation

[0033] To more clearly illustrate the overall concept of the present invention, a detailed description will be provided below with reference to the accompanying drawings and examples.

[0034] It should be noted that many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0035] Furthermore, in the description of this invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0036] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral unit; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. However, specifying a direct connection indicates that the two connected entities do not establish a connection relationship through an intermediate structure, but are simply connected to form a whole through a connecting structure. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0037] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0038] In this invention, such as Figure 1-6As shown, a grain drying conveying device is provided, including a frame 1 with an inner cavity, an upper cylinder 2 and a lower cylinder 3 spaced apart in the inner cavity, and a drive belt 4 rotatably disposed on the upper cylinder 2 and the lower cylinder 3. The frame 1 has a feed inlet 5 at its bottom and a discharge outlet 6 at its top. The conveying device includes hoppers 7 spaced apart on the drive belt 4. A rotatable adjusting wall 701 is formed on the side wall of the hoppers 7 away from the drive belt 4. The adjusting wall 701 switches between a guiding state and an operating state, with the adjusting wall 701 in the guiding state. When the hopper 7 is in operation, the adjusting wall 701 extends obliquely outward toward the opening of the hopper 7. The conveying device also includes a driving mechanism, which can drive the adjusting wall 701 to the guiding state when the hopper 7 rotates from the top of the upper cylinder to the discharge port 6 and when the hopper 7 rotates from the bottom of the lower cylinder to the feed port 5. The driving mechanism can also drive the hopper 7 to the operating state when it moves from the feed port 5 to the top of the upper cylinder and when it moves from the discharge port 6 to the bottom of the lower cylinder.

[0039] When the conveying device of the present invention is in use, such as Figure 2 and 5 As shown, at the feed inlet 5 at the bottom of the frame 1, the drive mechanism adjusts the adjusting wall 701 to the guiding state. At this time, the adjusting wall 701 tilts outward, and the opening of the hopper 7 becomes larger, which can better receive the grain entering through the feed inlet 5, thereby reducing the probability of the grain falling off during the process of entering the hopper 7. During the process of the hopper 7 moving upward past the feed inlet 5 and rotating towards the top of the upper cylinder, the drive mechanism adjusts the adjusting wall 701 to the operating state. At this time, the adjusting wall 701 tilts inward, and the opening of the hopper 7 becomes smaller, which can reduce the wind resistance of the hopper 7. In particular, the inward tilt of the adjusting wall 701 can form a guide slope on the outer surface of the adjusting wall 701, thereby further reducing the wind resistance. As the hopper 7 rotates from the top of the upper cylinder towards the discharge port 6, the drive mechanism adjusts the adjusting wall 701 to the material guiding state. At this time, under the action of centrifugal force, the adjusting wall 701 opens, and the opening of the hopper 7 becomes larger, which reduces the obstruction of the adjusting wall 701 on the grain scattering, making it easier for the grain to be scattered to the discharge port 6, thereby reducing the probability of the grain falling back from the inner cavity. After the hopper 7 moves downward past the discharge port 6, the drive mechanism can drive the adjusting wall 701 to the operating state to further reduce the wind resistance during the operation of the hopper 7.

[0040] It is evident that this invention enables the adjusting wall 701 to be in a guiding state when receiving material at the inlet 5 and scattering material at the outlet 6, thereby expanding the opening of the hopper 7 and optimizing the feeding and discharging efficiency and quality of the grain. Furthermore, the adjusting wall 701 can be switched to an operating state during the vertical movement of the hopper 7 to reduce wind resistance during the movement of the hopper 7.

[0041] In a preferred embodiment, more specifically regarding the structure of the present invention, the driving mechanism includes a driving arm 8 rotatably connected to the hopper 7 and a driving rail 9 disposed on the frame 1. The driving arm 8 has a driving end and is drively connected to the adjusting wall 701. When the hopper 7 drives the driving arm 8 to move until the driving end contacts the driving rail 9, the driving rail 9 can push the driving arm 8 to rotate away from the moving direction of the hopper 7, so that the driving arm 8 drives the adjusting wall 701 to rotate from the guiding state to the operating state.

[0042] like Figure 4 and Figure 5 As shown, by setting up a drive rail 9, when the drive belt 4 moves the hopper 7, the drive end of the drive arm 8 actively moves to the position of the drive rail 9, achieving contact between the drive end and the drive rail 9. The drive wall is pushed towards the hopper 7 by the drive rail 9 (relative action), thereby providing rotational power to the drive arm 8, so that the adjusting wall 701 can actively rotate and retract towards the inside of the hopper 7 to the operating state. This invention eliminates the need for an active drive structure for the adjusting wall 701, reducing the impact of modifying the hopper 7 on its weight.

[0043] In an optional embodiment, the drive mechanism may also be configured such that a small electric telescopic rod or a rotary motor is provided in the hopper 7 to drive the adjusting wall 701 to rotate.

[0044] In the illustrated embodiment, for the structure of the present invention, more specifically, the driving mechanism includes a first connecting rod 10 hinged to the hopper 7, and the first connecting rod 10 is hinged to the driving arm 8.

[0045] like Figure 3 As shown, a drive arm 8 and a hopper 7 are hinged together at the hopper 7 to form a drive seat 801. A second connecting rod 11 is formed on the side of the drive arm 8 away from the drive end. The first connecting rod 10 and the second connecting rod 11 are hinged together, so that when the drive end of the drive arm 8 rotates downward (moves relative to the drive rail 9), the drive arm 8 can drive the first connecting rod 10 to pull the adjusting wall 701 to rotate.

[0046] By adopting a linkage-driven transmission method, the transmission structure between the drive arm 8 and the adjusting wall 701 can be simplified, making it less likely to be jammed by falling grain.

[0047] In optional embodiments, other forms can also be used to achieve the linkage between the drive arm 8 and the adjusting wall 701, such as the drive seat 801 being connected to the adjusting wall 701 through a gear structure.

[0048] In the illustrated embodiment, for the structure of the present invention, the conveying device further includes a pin 12 and a power unit that drives the pin 12 to move. After the drive arm 8 drives the adjusting wall 701 to the operating state, the power unit can drive the pin 12 to move, so as to stop or release the rotation of the adjusting wall 701.

[0049] By setting the latch 12, the adjusting wall 701 is kept in the operating state during vertical movement, preventing the hopper 7 opening from opening arbitrarily. When the hopper 7 moves to the top of the upper cylinder and the bottom of the lower cylinder, the latch 12 can be opened. Under the combined action of centrifugal force and wind force, the adjusting wall 701 is forced to open, so as to automatically switch the adjusting wall 701 from the operating state to the material guiding state.

[0050] In the illustrated embodiment, for a more specific description of the structure of the present invention, the power unit includes a power arm 13 rotatably disposed on the hopper 7 and a spring 14 disposed between the pin 12 and the hopper 7. The power arm 13 is tractively connected to the pin 12. The power arm 13 is disposed on the side of the drive arm 8 facing the direction of travel of the hopper 7. When the hopper 7 drives the power arm 13 to move to the point where the power arm 13 contacts the drive rail 9, the drive rail 9 can push the power arm 13 to rotate away from the direction of travel of the hopper 7, so that the power arm 13 drives the pin 12 to release the adjusting wall 701. The spring 14 can drive the pin 12 to stop the adjusting wall 701.

[0051] like Figures 3 to 5 As shown, this allows the power arm 13 to contact the drive rail 9 first when the hopper 7 moves to the drive rail 9 position. After the power arm 13 moves relative to the drive rail 9, it drives the pin 12 to release the adjusting wall 701. When the drive arm 8 contacts the drive rail 9 and drives the adjusting wall 701 to retract and rotate, the influence of the pin 12 on the rotation of the adjusting wall 701 can be reduced. After the power arm 13 separates from the drive rail 9, the pin 12 moves to the position to stop the rotation of the adjusting wall 701 under the action of the spring 14. After the drive arm 8 separates from the drive rail 9 again, the adjusting wall 701 can maintain its retracted operating state.

[0052] It is easy to see that the present invention can simultaneously drive the rotation of the power arm 13 and the drive arm 8 using the drive rail 9. Furthermore, by optimizing the relative positions of the power arm 13 and the drive arm 8, the pin 12 can first release the adjusting wall 701 and then rotate the adjusting wall 701, and the pin 12 can first move to the stop adjusting wall 701 and then the drive arm 8 can separate from the drive rail 9. This allows the actions of the pin 12 and the adjusting wall 701 to coordinate with each other.

[0053] In the illustrated embodiment, for the structure of the present invention, a rotating seat 1301 is formed at the hinge position between the power arm 13 and the hopper 7. The rotating seat 1301 integrally forms the pin 12. A driving seat 801 is formed at the hinge position between the drive arm 8 and the hopper 7. The surface of the driving seat 801 is provided with a socket 15 for the pin 12 to be inserted.

[0054] like Figure 3 and Figure 4 As shown, a pin 12 is formed on the side of the rotating seat 1301 away from the outer end of the power arm 13, and the drive seat 801 is arranged in an arc shape, with a socket 15 located on the side wall of the drive seat 801. When the adjusting wall 701 is in the guiding state, the spring 14 drives the pin 12 to abut against the side of the drive seat 801, thereby stabilizing the position of the power arm 13.

[0055] In the structure employing the first connecting rod 10 for transmission, by providing a socket 15 in the drive seat 801, the pin 12 can stop and release the adjusting wall 701 at the drive seat 801 position. Thus, the first connecting rod 10 can be used to transmit the driving force for the inward rotation and the braking force for the outward rotation of the adjusting wall 701. There is no need to provide a mating structure between the adjusting wall 701 and the pin 12, thereby further simplifying the structure of the adjusting wall 701 and preventing interference from grain on the locking structure of the adjusting wall 701.

[0056] In the illustrated embodiment, as Figures 3 to 6 As shown, the drive rail 9 is located on the side of the hopper 7 away from the adjusting wall 701 and is connected to the frame. Drive rails are provided at both ends of the hopper. The drive seat 801 and the rotating seat 1301 are both located on the side of the hopper 7 away from the adjusting wall 701 at both ends of the hopper. This allows the drive seat 801 and the rotating seat 1301 to be located away from the grain feeding and discharging positions, thereby further reducing the impact of the grain on the position and structure of the drive seat 801 and the rotating seat 1301.

[0057] The structure in which the power arm 13 drives the pin 12 to brake and release the adjusting wall 701 is not limited to... Figure 3 The drive seat 801 shown is provided with a socket 15. In an optional embodiment, the power arm 13 is provided with a hook at the end of the rotating seat 1301 away from the drive rail 9. The adjusting wall 701 is provided with a locking block that engages with the hook. When the adjusting wall 701 is rotated to the running state, the hook can engage with the locking block.

[0058] In the illustrated embodiment, specifically regarding the arrangement of spring 14, the lower end of spring 14 is connected to the upper side of power arm 13, and the upper end is connected to the fixing block on hopper 7. Spring 14 drives power arm 13 to rotate through tension, causing pin 12 to have a rotational tendency toward insertion hole 15. In a preferred embodiment, to prevent spring 14 from getting stuck in grain, a silicone sleeve can be fitted on the outside of spring 14. In the accompanying drawings, the silicone sleeve is not shown to illustrate the structure of spring 14. The arrangement of spring 14 is not limited to the form of a tension spring shown in the figure. In optional embodiments, a torsion spring can also be provided between rotating seat 1301 and hopper 7, or a compression spring can be provided between pin 12 and hopper 7.

[0059] Regarding the setting of the latch 12, in an alternative embodiment, the latch 12 can also be configured as an electric latch 12. Preferably, a small electric latch 12 with its own power supply can be used. The small electric latch 12 has the characteristics of long endurance and sensitive response, and can be automatically charged with a small power generation module. In the embodiment using the electric latch 12, a marking part can be set at the position of the drive rail 9, and the electric latch 12 is equipped with an inductive switch that cooperates with the marking part. When the electric latch 12 moves to the position of the drive rail 9, the adjusting wall 701 is released; when the electric latch 12 leaves the drive rail 9, the adjusting wall 701 is stopped.

[0060] In the illustrated embodiment, specifically regarding the structure of the present invention, the drive rail 9 includes a limiting section 901 and a pushing section 902 arranged along the traveling direction of the hopper 7. The pushing section 902 protrudes from the limiting section 901 on the side facing the hopper 7, such that...

[0061] When the power arm 13 moves to the limiting section 901, it can be pushed to drive the pin 12 to release the adjusting wall 701;

[0062] When the drive arm 8 moves to the position of the limiting section 901, the adjusting wall 701 can rotate to the material guiding state. When the drive arm 8 moves to the position of the pushing section 902, the pushing section 902 can drive the arm 8 to rotate so that the adjusting wall 701 moves to the operating state.

[0063] like Figure 2 As shown, when the hopper 7 moves to the drive rail 9 position, the power arm 13 first moves to the limiting section 901. At this time, the drive arm 8 drives the pin 12 to release the adjusting wall 701. The outer end of the drive arm 8 has not yet contacted the drive rail 9 to rotate. Under the action of centrifugal force and wind resistance (plus gravity when in the lower cylinder position), the adjusting wall 701 can rotate to the material guiding state. When the drive arm 8 moves to the pushing section 902, the pushing section 902 can push the drive arm 8 to rotate, thereby causing the adjusting wall 701 to retract to the operating state. At this time, the wind resistance of the hopper 7 can be reduced.

[0064] In the illustrated embodiment, for the structure of the present invention, more specifically, the frame 1 is provided with the drive rail 9 at the position of the upper cylinder 2, and the drive rail 9 further includes a guide section 903 disposed between the limiting section 901 and the pushing section 902; the limiting section 901 of the drive rail 9 at the position of the upper cylinder 2 extends from the upper side of the center of the upper cylinder 2 to the upper side of the lower edge of the discharge port 6, and the guide section 903 is configured such that when the drive arm 8 of the hopper 7 moves to the position of the guide section 903, the outer edge of the adjusting wall 701 of the hopper 7 moves from the upper side of the lower edge of the discharge port 6 to the lower side of the lower edge of the discharge port 6.

[0065] like Figure 2 and Figure 4 As shown, when the hopper 7 moves to the top center position of the upper cylinder 2, the power arm 13 of the hopper 7 moves to the limit section 901, and the power arm 13 drives the query unlock. Under the action of centrifugal force and wind resistance, the regulating wall 701 opens, and the hopper 7 begins to centrifugally distribute material. During this process, the limit section 901 can also cooperate with the drive arm 8 to control the limit position of the opening of the regulating wall 701. When the outer edge of the regulating wall 701 moves to the lower edge area of ​​the feed inlet 5, the position of the guide section 903 is optimized so that the regulating wall 701 begins to contract and rotate on the upper side of the lower edge of the feed inlet 5. This prevents the outer edge of the regulating wall 701 from colliding with the lower edge of the feed inlet 5, and allows the regulating wall 701 to maintain a large opening as the hopper 7 moves from the top center of the upper cylinder 2 to the lower edge of the discharge port 6. The vertical projection of the outer edge of the regulating wall 701 of the hopper 7 that has not contacted the guide section 903 is even located inside the discharge port 6, so that the grain falling on the regulating wall 701 can be directly guided into the discharge port 6, thereby further improving the thoroughness of material distribution.

[0066] In the illustrated embodiment, for the structure of the present invention, more specifically, the frame 1 is provided with the drive rail 9 at the position of the lower cylinder 3, and the lower edge of the feed inlet 5 is formed with an inclined plate 16 extending into the inner cavity. The drive rail 9 at the position of the lower cylinder 3 is configured such that the limiting section 901 extends from the lower side of the center of the lower cylinder 3 to the upper side of the upper edge of the feed inlet 5, and the pushing section 902 is disposed on the upper side of the limiting section 901. The limiting section 901 is formed with a transition protrusion 904 at the lower edge of the feed inlet 5. The transition protrusion 904 is configured such that when the drive arm 8 moves to the position of the transition protrusion 904, the adjusting wall 701 of the hopper 7 moves from the lower side of the inclined plate 16 to the upper side of the inclined plate 16.

[0067] like Figure 2 and Figure 5As shown, when the power arm 13 moves to the position of the limiting rail below the center of the lower cylinder 3, the power arm 13 rotates and drives the pin 12 to release the adjusting wall 701, causing the adjusting wall 701 to open. At this time, the opening degree of the adjusting wall 701 can be controlled by the drive arm 8 abutting against the limiting section 901. When the hopper 7 moves to the position where the drive arm 8 abuts against the transition protrusion, the adjusting wall 701 first contracts and then opens, so that the adjusting wall 701 avoids the inclined plate 16 below the feed inlet 5. With this setting, when the adjusting wall 701 of the hopper 7 is located below the inclined plate 16, the opening degree of the adjusting wall 701 is larger, which can better receive the grain introduced by the inclined plate 16. When the adjusting wall 701 passes the inclined plate 16, it first contracts and then opens, which can avoid the inclined plate 16 and also better receive the grain on the upper side of the inclined plate 16, thereby achieving better reception of grain at the feed inlet 5.

[0068] In the illustrated embodiment, to further improve the smoothness of the movement of the hopper 7, rollers are preferably provided at the ends of both the drive arm 8 and the power arm 13, so that the rollers can smoothly cooperate with the drive rail 9.

[0069] To further improve the limiting effect of the adjusting wall 701 when it opens outward, in Figure 3 In the illustrated embodiment, a limiting block connected to the hopper 7 is provided on the upper side of the second connecting rod 11.

[0070] In the illustrated embodiment, the adjusting wall 701 specifically comprises a wall body and side plates formed on both sides of the wall body. The side plates are in contact with the outer surface of the side wall of the hopper 7. The bottom wall of the hopper 7 has bearing seats installed at both ends of the hopper 7, and a rotating shaft is provided at the bottom of the hopper 7, which is fitted onto the bearing seats. The bottom wall of the hopper 7 is arc-shaped to facilitate the scattering of grain.

[0071] In the accompanying diagram, to better illustrate the structure, Figure 2 The display is interrupted in the middle. Figure 6 Only showed Figure 5 A partial structural diagram of the central opening position, to show the relative position of the fixed rail on the frame and the hopper.

[0072] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0073] The foregoing is merely an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

Claims

1. A grain drying conveying device, comprising a frame having an inner cavity, an upper cylinder and a lower cylinder spaced apart vertically within the inner cavity, and a drive belt rotatably mounted on the upper and lower cylinders, wherein the bottom of the frame has a feed inlet and the top of the frame has a discharge outlet, characterized in that, The conveying device includes hoppers spaced apart on the drive belt. The sidewalls of the hoppers away from the drive belt form rotatable adjusting walls. The adjusting walls switch between a guiding state and an operating state. When the adjusting walls are in the guiding state, they extend obliquely outward toward the opening of the hoppers. When the adjusting walls are in the operating state, they extend obliquely inward toward the opening of the hoppers. The conveying device also includes a drive mechanism, which can drive the hopper to the operating state during the process of the hopper moving from the feed port to the top of the cylinder and during the process of the hopper moving from the discharge port to the bottom of the cylinder; The driving mechanism includes a driving arm rotatably connected to the hopper and a driving rail disposed on the frame. The driving arm has a driving end and is pulsatorically connected to the adjusting wall. When the hopper drives the driving arm to move to the point where the driving end contacts the driving rail, the driving rail can push the driving arm so that the driving arm drives the adjusting wall to rotate from the guiding state to the operating state or from the operating state to the guiding state. The drive rail includes a limiting section and a pushing section arranged along the travel direction of the hopper. The pushing section protrudes from the limiting section on the side facing the hopper, so that when the drive arm moves to the position of the limiting section, the adjusting wall can rotate to the material guiding state, and when the drive arm moves to the position of the pushing section, the pushing section can drive the arm to rotate so that the adjusting wall moves to the operating state. The frame is provided with the drive rail at the position of the upper cylinder. The limiting section of the drive rail at the position of the upper cylinder extends from the upper side of the center of the upper cylinder to the upper side of the lower edge of the discharge port. The pushing section is located below the limiting section. The frame is provided with the drive rail at the lower cylinder position, the limiting section extends from the lower side of the center of the lower cylinder to the upper side of the upper edge of the feed port, and the pushing section is located on the upper side of the limiting section.

2. The grain drying conveying device according to claim 1, characterized in that, The drive mechanism includes a first link hinged to the hopper, and the first link is hinged to the drive arm.

3. The grain drying conveying device according to claim 1, characterized in that, The conveying device also includes a pin and a power unit that drives the pin to move. The power unit can drive the pin to move in order to stop or release the rotation of the adjusting wall.

4. The grain drying conveying device according to claim 3, characterized in that, The power unit includes a power arm rotatably disposed in the hopper and a spring disposed between the pin and the hopper. The power arm is capable of being drivenly connected to the pin and is disposed on the side of the drive arm facing the direction of travel of the hopper. When the hopper moves the power arm to the point where the power arm contacts the limiting section of the drive rail, the drive rail can push the power arm to rotate away from the direction of movement of the hopper, so that the power arm drives the pin to release the adjusting wall. After the power arm separates from the drive rail, the spring can drive the pin to stop the adjusting wall.

5. The grain drying conveying device according to claim 4, characterized in that, A rotating seat is formed at the hinge position between the power arm and the hopper, and the rotating seat is integrally formed with the pin. A driving seat is formed at the hinge position between the drive arm and the hopper, and the surface of the driving seat is provided with a socket for the pin to be inserted.

6. The grain drying conveying device according to claim 4, characterized in that, When the power arm moves to the limit section, it can be pushed to cause the pin to release the adjustment wall.

7. The grain drying conveying device according to claim 6, characterized in that, The drive rail also includes a guide section disposed between the limiting section and the pushing section. The guide section is configured such that when the drive arm of the hopper moves to the position of the guide section, the outer edge of the adjusting wall of the hopper moves from the upper side of the lower edge of the discharge port to the lower side of the lower edge of the discharge port.

8. The grain drying conveying device according to claim 6, characterized in that, The lower edge of the feed inlet has an inclined plate extending into the inner cavity, and the drive rail at the lower cylinder position is configured as follows. The limiting section has a transition protrusion at the lower edge of the feed inlet. The transition protrusion is configured such that when the drive arm moves to the position of the transition protrusion, the adjusting wall of the hopper moves from the lower side of the inclined plate to the upper side of the inclined plate.

9. The grain drying conveying device according to claim 3, characterized in that, The latch is configured as an electric latch.

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