Grain discharging device and cylindrical grain drying machine

Abstract

The invention relates to the technical field of grain processing, in particular to a grain discharging device and a cylindrical grain dryer, and the grain discharging device comprises a main discharging hopper, a flow guide part and a scraper assembly. The upper end of the main discharging hopper communicates with the drying machine body, and the lower end of the main discharging hopper is provided with an annular chassis with a through hole in the middle. The flow guiding pieces are arranged above the base plate in the main discharging hopper at intervals, and the flow guiding pieces can guide grain into an annular area on the peripheral side of the base plate. The scraper assembly is movably arranged on the side, facing the flow guide part, of the base plate, and the movement of the scraper assembly can push the grains on the peripheral side of the base plate to the middle through hole so that the grains can be discharged. According to the grain discharging device, components for achieving the grain discharging function are arranged in the main discharging hopper, the grain discharging function and the discharging function are integrated, stable grain discharging is achieved, the space of the main discharging hopper is fully utilized, occupied space in the height direction of the drying machine is effectively reduced, and then the height and the construction cost of the drying machine are effectively reduced.

Description

Technical Field

[0001] The present application relates to the technical field of grain processing, and particularly relates to a grain discharging device and a cylindrical grain dryer. Background Art

[0002] Cylindrical grain dryers are widely used in agricultural production and grain processing. Their main function is to efficiently and evenly dry grains. To ensure that the dried grains can be smoothly discharged, a grain discharging device is usually provided at the lower end of the dryer, which cooperates with an inverted conical feeding hopper to achieve centralized discharging of grains. This design can effectively guide the grains to the outlet of the dryer, facilitating subsequent collection and transportation.

[0003] However, in the prior art, the designs of the grain discharging device and the inverted conical feeding hopper often require a large height space. On the one hand, the grain discharging device needs to have a certain structural complexity to achieve the function of stable grain discharging. On the other hand, the design of the inverted conical feeding hopper also needs to reserve enough height space to ensure that the grains can smoothly converge to the feeding port. However, the accumulation of the heights of these two parts results in a significant increase in the overall height of the entire dryer. Summary of the Invention

[0004] The purpose of the present invention is to provide a grain discharging device and a cylindrical grain dryer to achieve stable grain discharging and effectively reduce the height and construction cost of the dryer.

[0005] The present invention provides a grain discharging device, including a main feeding hopper, a guiding member, and a scraper assembly;

[0006] The main feeding hopper is arranged vertically. The open upper end of the main feeding hopper is communicated with the dryer body. The lower end of the main feeding hopper is provided with a chassis, and the chassis is a ring with a through hole in the middle;

[0007] The guiding member is arranged in the main feeding hopper and is spaced above the chassis. The guiding member is used to guide the grains entering the main feeding hopper to the outer peripheral side of the chassis;

[0008] The scraper assembly is movably arranged on the side of the chassis facing the guiding member. The movement of the scraper can push the grains located on the outer peripheral side of the chassis to the through hole, so that the grains are discharged from the main feeding hopper through the through hole.

[0009] Further, the guiding member is conical, the tip of the guiding member is arranged upward, and the lower end of the guiding member is connected to the side wall of the main feeding hopper through a plurality of circumferentially arranged legs, so that the lower end of the guiding member is spaced from the chassis by a predetermined distance, and an annular gap is formed between the lower end of the guiding member and the side wall of the main feeding hopper.

[0010] Further, the squeegee assembly includes at least one squeegee;

[0011] A coaxial rotating shaft is inserted through the through hole, and the rotating shaft can rotate around its own axis;

[0012] The squeegee is placed above the chassis in a clearance fit manner, and one end of the squeegee extends to the inner peripheral side of the chassis and is connected to the rotating shaft through a first bracket, so that the squeegee can rotate synchronously with the rotating shaft around a predetermined direction;

[0013] The other end of the squeegee extends to the outer peripheral side of the chassis, and the squeegee is bent into an arc shape toward its rotation direction;

[0014] When the number of the squeegees is multiple, the multiple squeegees are arranged at intervals in the circumferential direction around the rotating shaft.

[0015] Further, spiral blades are provided on the rotating shaft, the upper end of the spiral blades extends above the chassis, and the lower end of the spiral blades extends below the chassis.

[0016] Further, a second bracket is provided at the lower end of the flow guiding member, and a third bracket is suspended at a position opposite to the through hole below the chassis. Bearings are provided on both the second bracket and the third bracket;

[0017] The upper end of the rotating shaft is rotationally connected to the second bracket through the bearing on the second bracket, and the lower end of the rotating shaft is rotationally connected to the third bracket through the bearing on the third bracket.

[0018] Further, the third bracket is of a flat plate structure, and the third bracket is suspended below the chassis through a plurality of connecting rods arranged circumferentially;

[0019] The grain discharging device further includes a driving member, and the lower end of the rotating shaft extends below the third bracket and is connected to the driving end of the driving member to drive the rotating shaft to rotate by using the driving member.

[0020] Further, grain pushing plates are provided on the side wall of the rotating shaft. The grain pushing plates are located between the chassis and the third bracket, and the grain pushing plates can rotate synchronously with the rotating shaft to push the grain falling on the third bracket, so that the grain falls from the outer peripheral side of the third bracket.

[0021] Further, the grain discharging device further includes a secondary blanking hopper;

[0022] The secondary blanking hopper is adaptively sleeved outside the third bracket. The upper end of the secondary blanking hopper is connected to the chassis, and the lower end of the secondary blanking hopper forms a conical grain discharging port.

[0023] Furthermore, the driving member is arranged outside the deputy blanking hopper in the radial direction, and an opening is formed at a position on the side wall of the deputy blanking hopper opposite to the driving end of the driving member;

[0024] A driving wheel is arranged at the driving end of the driving member, a driven wheel is arranged at the lower end of the rotating shaft, a transmission member is sleeved on the driving wheel, and one end of the transmission member away from the driving wheel extends into the deputy blanking hopper through the opening and is sleeved on the driven wheel.

[0025] The invention also provides a cylindrical grain dryer, which comprises a dryer body and the grain discharging device described in any one of the above.

[0026] Compared with the prior art, the beneficial effects of the invention are as follows:

[0027] The grain discharging device provided by the invention comprises a main blanking hopper, a guiding member and a scraper assembly.

[0028] The main blanking hopper is used to be arranged vertically below the dryer main body. Openings are formed at both the upper and lower ends of the main blanking hopper. The upper opening of the main blanking hopper communicates with the lower end of the dryer body, so that the grain in the dryer can flow downward into the main blanking hopper. A chassis is arranged at the lower end of the main blanking hopper to block the lower opening of the main blanking hopper by using the chassis. The chassis is annular, that is, a through hole penetrating the chassis is formed in the middle of the chassis, which is used as an outlet for the main blanking hopper to discharge grain. The guiding member is arranged in the main blanking hopper and spaced above the chassis. The guiding member can guide the grain entering the main blanking hopper to the periphery of the main blanking hopper, so that the grain falls into the annular area on the outer periphery of the chassis. The scraper assembly is arranged on the side of the chassis facing the guiding member. The scraper assembly is movable, and as the scraper assembly moves, the scraper assembly can gradually push the grain located on the outer periphery of the chassis towards the inner side of the chassis, so that the grain is pushed to the through hole in the middle of the chassis and flows out of the main blanking hopper through the through hole, realizing grain discharging.

[0029] Therefore, the grain discharging device of the present application arranges the components realizing the grain discharging function in the main blanking hopper, integrating the grain discharging function and the blanking function into one. It not only realizes stable grain discharging, but also makes full use of the space of the main blanking hopper, effectively reducing the occupation of the space in the height direction of the dryer, and further effectively reducing the height and construction cost of the dryer.

[0030] The invention also provides a cylindrical grain dryer comprising the above-mentioned grain discharging device, so the cylindrical grain dryer also has the beneficial effects of the grain discharging device. Description of the Drawings

[0031] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0032] Figure 1 Structural schematic diagram of the grain discharging device provided by the embodiment of the present invention from the first perspective;

[0033] Figure 2 Structural schematic diagram of the grain discharging device provided by the embodiment of the present invention from the second perspective;

[0034] Figure 3 Structural schematic diagram of the chassis and the scraper assembly of the grain discharging device provided by the embodiment of the present invention;

[0035] Figure 4 Structural schematic diagram of the rotating shaft of the grain discharging device provided by the embodiment of the present invention.

[0036] Reference numerals:

[0037] 1 - dryer body, 2 - main feeding hopper, 21 - chassis, 22 - through hole, 3 - auxiliary feeding hopper, 31 - opening, 4 - guiding member, 41 - second bracket, 5 - rotating shaft, 51 - scraper, 52 - spiral blade, 53 - grain pushing piece, 54 - driven wheel, 55 - third bracket, 56 - first bracket, 57 - supporting part, 6 - driving member. Detailed embodiments

[0038] The following will clearly and completely describe the technical solutions of the present invention with reference to the drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention.

[0039] Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents the selected embodiments of the present invention.

[0040] Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0041] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance.

[0042] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] Next, refer to Figures 1 to 4 Describe the grain discharging device and the cylindrical grain dryer according to some embodiments of the present application.

[0044] The present application provides a grain discharging device, as Figure 1 and Figure 3 shown, the grain discharging device includes a main discharging hopper 2, a guiding member 4, and a scraper assembly.

[0045] The main discharging hopper 2 is used to be arranged vertically below the main body of the dryer. Both the upper and lower ends of the main discharging hopper 2 are formed with openings. The opening at the upper end of the main discharging hopper 2 is communicated with the lower end of the dryer body 1, so that the grain in the dryer can flow downward into the main discharging hopper 2. A chassis 21 is provided at the lower end of the main discharging hopper 2 to block the opening at the lower end of the main discharging hopper 2 by using the chassis 21, and the chassis 21 is annular, that is, a through hole 22 penetrating the chassis 21 is formed in the middle of the chassis 21 to be used as the outlet for the main discharging hopper 2 to discharge grain.

[0046] The guiding member 4 is arranged in the main discharging hopper 2 and spaced above the chassis 21. The guiding member 4 can guide the grain entering the main discharging hopper 2 to the peripheral side of the main discharging hopper 2, so that the grain falls into the annular area on the outer peripheral side of the chassis 21.

[0047] In this embodiment, preferably, as Figure 1As shown, the flow guide member 4 is conical, with the tip of the flow guide member 4 facing upward. The large-diameter end of the flow guide member 4, i.e., the lower end of the flow guide member 4, is connected to the side wall of the main discharge hopper 2 through a plurality of circumferentially spaced legs, so that the lower end of the flow guide member 4 is spaced a predetermined distance from the chassis 21 in the vertical direction. At the same time, an annular gap is formed between the circumferential side of the lower end of the flow guide member 4 and the circumferential side wall of the main discharge hopper 2. Thus, when the grain flows into the main discharge hopper 2 from the upper end of the main discharge hopper 2, under the action of the conical flow guide member 4, it can be guided to the circumferential side of the main discharge hopper 2 and fall into the annular area on the outer circumferential side of the chassis 21 opposite to the annular gap through the annular gap between the flow guide member 4 and the main discharge hopper 2.

[0048] In this embodiment, preferably, the main discharge hopper 2 is a frustum-shaped structure with a hollow interior, and the cross-sectional area of the main discharge hopper 2 tapers from top to bottom, so that an annular frustum space is formed between the main discharge hopper 2 and the flow guide member 4, thereby guiding the flow direction of the grain entering the main discharge hopper 2 through the cooperation of the main discharge hopper 2 and the flow guide member 4.

[0049] The scraper assembly is arranged on the side of the chassis 21 facing the flow guide member 4. The scraper assembly is movable, and as the scraper assembly moves, the scraper assembly can gradually push the grain located on the outer circumferential side of the chassis 21 towards the inner side of the chassis 21, so that the grain is pushed to the through hole 22 in the middle of the chassis 21 and flows out of the main discharge hopper 2 through the through hole 22, realizing grain discharge.

[0050] Therefore, the grain discharge device of the present application arranges the components realizing the grain discharge function inside the main discharge hopper 2, integrating the grain discharge function and the feeding function into one, which not only realizes stable grain discharge, but also makes full use of the space of the main discharge hopper 2, effectively reducing the occupation of the space in the height direction of the dryer, thereby effectively reducing the height and construction cost of the dryer.

[0051] In an embodiment of the present application, preferably, as Figure 1 and Figure 3As shown, a rotating shaft 5 is inserted through a through hole 22 in the middle of the chassis 21. The rotating shaft 5 is coaxially arranged with the bottom plate (and the through hole 22), and the rotating shaft 5 can be driven to rotate around its own axis. The scraper assembly includes a scraper 51. The scraper 51 is arranged above the chassis 21 in a clearance fit manner. The scraper 51 has a first end and a second end along its own length direction. The first end of the scraper 51 extends to the inner peripheral side in the radial direction of the chassis 21 (i.e., the edge of the through hole 22 in the middle of the bottom plate), and is connected to the rotating shaft 5 through a first bracket 56, so that the scraper 51 can rotate synchronously with the rotating shaft 5 around a predetermined direction. The second end of the scraper 51 extends to the outer peripheral side in the radial direction of the chassis 21. At the same time, the scraper 51 is bent into an arc shape from the first end to the second end towards its own rotation direction. Thus, when the scraper 51 rotates around a predetermined direction with the rotating shaft 5, the scraper 51 can gradually push the grain at the outer peripheral side of the chassis 21 towards the through hole 22 in the middle of the chassis 21, so that the grain can reach the through hole 22 and flow out of the main discharge hopper 2 through the through hole 22; at the same time, by controlling the rotation speed of the scraper 51, the outflow rate of the grain can be controlled, and then by controlling the outflow rate of the grain, the residence time of the grain in the upper dryer body 1 can be controlled to control the drying efficiency of the grain.

[0052] Preferably, the number of the scrapers 51 is at least one. When the number of the scrapers 51 is multiple (including two), the multiple scrapers 51 are arranged at intervals circumferentially around the rotating shaft 5 to discharge the grain simultaneously through the multiple scrapers 51 and ensure the discharging efficiency.

[0053] In this embodiment, preferably, as Figure 3 shown, the first bracket 56 is L-shaped, including a first connecting portion and a second connecting portion that are vertically connected. The first connecting portion is horizontally arranged along the radial direction of the through hole 22, and one end of the first connecting portion is connected to the rotating shaft 5. The second connecting portion is vertically arranged. The upper end of the second connecting portion is vertically connected to the first connecting portion. The lower end of the second connecting portion extends towards the chassis 21, and an arc-shaped supporting portion 57 is connected to the lower end of the second connecting portion. The supporting portion 57 is adapted to the scraper 51. The convex side of the scraper 51 (i.e., the side where the arc-shaped slide plate bulges outwards) is connected to the supporting portion 57. Thus, the scraper 51 is installed above the chassis 21 in a clearance fit manner, and the scraper 51 is connected to the rotating shaft 5 through the first bracket 56 to ensure that the scraper 51 can rotate stably under the drive of the rotating shaft 5 for discharging the grain; at the same time, it also ensures that the connection structure between the scraper 51 and the rotating shaft 5 will not block the through hole 22 and affect the smooth discharging of the grain.

[0054] When the number of the scrapers 51 is multiple, the number of the first brackets 56 is also multiple. The multiple scrapers 51 are connected to the rotating shaft 5 one by one through the multiple first brackets 56.

[0055] In an embodiment of the present application, preferably, as Figure 1 、Figure 3 and Figure 4 As shown in Figure 4 , a spiral blade 52 with a predetermined height is provided on the rotating shaft 5. The outer diameter of the spiral blade 52 is smaller than the diameter of the through hole 22 of the chassis 21. One end of the spiral blade 52 extends above the chassis 21, and the other end of the spiral blade 52 extends below the chassis 21 through the through hole 22. Thus, a section of spiral auger is formed by the rotating shaft 5 and the spiral blade 52, and the spiral auger can rotate within the through hole 22 to ensure that the grain will not be blocked at the through hole 22 and ensure that the grain can smoothly discharge from the through hole 22.

[0056] Regarding the rotation setting of the rotating shaft 5, in an embodiment of the present application, preferably, as Figure 1 and Figure 3 shown, a second bracket 41 is provided at the lower end of the deflector 4. A third bracket 55 is suspended at a position opposite to the through hole 22 below the chassis 21. Specifically, the third bracket 55 is suspended below the chassis 21 by a plurality of connecting rods arranged circumferentially. Bearings are provided on both the second bracket 41 and the third bracket 55. The upper end of the rotating shaft 5 is rotatably connected to the second bracket 41 through the bearing on the second bracket 41, and the lower end of the rotating shaft 5 is rotatably connected to the third bracket 55 through the bearing on the third bracket 55. Thus, the rotating shaft 5 is stably arranged within the through hole 22 of the chassis 21 and can rotate around its own axis.

[0057] In this embodiment, preferably, the lower end of the rotating shaft 5 extends below the third bracket 55 to serve as a connection end to connect the driving member 6 that drives its rotation. To ensure the stability of the connection between the rotating shaft 5 and the driving member 6, the third bracket 55 is set as a flat plate structure, so that the grain flowing out through the through hole 22 on the chassis 21 will fall on the third bracket 55 and will not fall at the connection end of the rotating shaft 5 to affect the connection and transmission stability between it and the driving member 6.

[0058] Preferably, as Figure 1 、 Figure 3 and Figure 4 shown, a grain pusher 53 is provided on the side wall of the rotating shaft 5. One end of the grain pusher 53 is connected to the side wall of the rotating shaft 5, and the other end extends along the radial direction of the rotating shaft 5. The grain pusher 53 is located on the rotating shaft 5 between the chassis 21 and the third bracket 55 and is located below the spiral blade 52. Thus, when the rotating shaft 5 rotates, it can also drive the grain pusher 53 to rotate to push the grain that has fallen on the third bracket 55 with the grain pusher 53, so that the grain falls from the third bracket 55. Further preferably, the number of the grain pushers 53 is multiple (including two), and the multiple grain pushers 53 are arranged at intervals around the circumference of the rotating shaft 5.

[0059] In this embodiment, preferably, as Figure 1 and Figure 2As shown, the grain discharging device further includes a secondary discharging hopper 3. The overall external dimension of the secondary discharging hopper 3 is smaller than that of the main discharging hopper 2. The secondary discharging hopper 3 is adaptively sleeved outside the third support 55, and the upper end of the secondary discharging hopper 3 is connected to the chassis 21. The lower end of the secondary discharging hopper 3 forms a conical discharging port, so that the grains falling on the third support 55 can fall into the secondary discharging port and be centrally discharged through the conical discharging port at the lower end of the secondary discharging hopper 3. Therefore, by arranging a discharging hopper with a smaller size below the main discharging hopper 2, it can not only achieve centralized grain discharging but also reduce the space occupied in the height direction of the dryer.

[0060] In this embodiment, preferably, as Figure 2 shown, the driving member 6 for driving the rotation of the rotating shaft 5 is arranged outside the secondary discharging hopper 3 in the radial direction. It can be fixed to the outer wall of the secondary discharging hopper 3 through a support, or can be fixed to other external structures through a support. An opening 31 is provided at the position of the secondary discharging hopper 3 opposite to the driving end of the driving member 6. The driving end of the driving member 6 is provided with a driving wheel, and the lower end of the rotating shaft 5 is provided with a driven wheel 54. A transmission member is sleeved on the driving wheel. The end of the transmission member away from the driving wheel extends into the secondary discharging hopper 3 through the opening 31 and is sleeved on the driven wheel 54. When the driving member 6 drives the driving wheel to rotate, the driven wheel 54 drives the rotating shaft 5 to rotate by using the transmission member for transmission.

[0061] The driving wheel and the driven wheel 54 can be pulley wheels, and in this case, the transmission member is a transmission belt; the driving wheel and the driven wheel 54 can also be sprocket wheels, and in this case, the transmission member is a transmission chain.

[0062] This application also provides a cylindrical grain dryer, which includes a dryer body and the grain discharging device according to any one of the above embodiments arranged below the dryer body.

[0063] In this embodiment, the cylindrical grain dryer includes a grain discharging device. Therefore, the cylindrical grain dryer has all the beneficial effects of the grain discharging device, which will not be elaborated one by one here.

[0064] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A grain discharging device, characterized in that, It includes a main feeding hopper, a guiding member, and a scraper assembly; The main feeding hopper is arranged vertically. The open end at the upper end of the main feeding hopper communicates with the dryer body. A chassis is provided at the lower end of the main feeding hopper, and the chassis is annular with a through hole in the middle; The guiding member is arranged in the main feeding hopper and is spaced above the chassis. The guiding member is used to guide the grains entering the main feeding hopper to the outer peripheral side of the chassis; The scraper assembly is movably arranged on the side of the chassis facing the guiding member. The movement of the scraper can push the grains located on the outer peripheral side of the chassis to the through hole, so that the grains are discharged from the main feeding hopper through the through hole.

2. The grain discharging device according to claim 1, characterized in that, The guiding member is conical, the tip of the guiding member is arranged upward, and the lower end of the guiding member is connected to the side wall of the main feeding hopper through a plurality of circumferentially arranged legs, so that the lower end of the guiding member is spaced from the chassis by a predetermined distance, and an annular gap is formed between the lower end of the guiding member and the side wall of the main feeding hopper.

3. The grain discharging device according to claim 1, wherein The scraper assembly includes at least one scraper; A coaxial rotating shaft is inserted through the through hole, and the rotating shaft can rotate around its own axis; The scraper is placed above the chassis in a clearance fit manner. One end of the scraper extends to the inner peripheral side of the chassis and is connected to the rotating shaft through a first bracket, so that the scraper can rotate synchronously with the rotating shaft around a predetermined direction; The other end of the scraper extends to the outer peripheral side of the chassis, and the scraper is bent into an arc shape towards its rotating direction; When the number of the scrapers is multiple, the multiple scrapers are circumferentially spaced around the rotating shaft.

4. The grain discharging device according to claim 3, characterized in that Spiral blades are provided on the side wall of the rotating shaft. The upper end of the spiral blades extends above the chassis, and the lower end of the spiral blades extends below the chassis.

5. The grain discharging device according to claim 3, wherein, A second bracket is provided at the lower end of the guiding member. A third bracket is suspended at a position opposite to the through hole below the chassis. Bearings are provided on both the second bracket and the third bracket; The upper end of the rotating shaft is rotatably connected to the second bracket through the bearing on the second bracket, and the lower end of the rotating shaft is rotatably connected to the third bracket through the bearing on the third bracket.

6. The grain discharging device according to claim 5, characterized in that The third bracket is a flat plate structure, and the third bracket is suspended below the chassis through a plurality of circumferentially arranged connecting rods; The grain discharging device further includes a driving member. The lower end of the rotating shaft extends below the third bracket and is connected to the driving end of the driving member to drive the rotating shaft to rotate by using the driving member.

7. The grain discharging device according to claim 6, characterized in that, Feeding blades are provided on the side wall of the rotating shaft. The feeding blades are located between the chassis and the third bracket. The feeding blades can rotate synchronously with the rotating shaft to push the grains falling on the third bracket, so that the grains fall from the outer peripheral side of the third bracket.

8. The grain discharging device according to claim 7, wherein, The grain discharging device further includes a secondary feeding hopper; The secondary feeding hopper is adaptively sleeved outside the third bracket. The upper end of the secondary feeding hopper is connected to the chassis, and the lower end of the secondary feeding hopper forms a conical grain discharging port.

9. The grain discharging device according to claim 8, characterized in that, The driving member is arranged outside the radial direction of the secondary feeding hopper. An opening is provided at a position on the side wall of the secondary feeding hopper opposite to the driving end of the driving member; The driving end of the driving member is provided with a driving wheel, the lower end of the rotating shaft is provided with a driven wheel, a transmission member is sleeved on the driving wheel, and one end of the transmission member away from the driving wheel extends into the auxiliary blanking hopper through the opening and is sleeved on the driven wheel.

10. A cylindrical grain dryer, characterized in that, It includes a dryer body and the grain discharging device according to any one of claims 1 to 9 provided below the dryer.

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