Grain discharging device of drying machine

Abstract

The utility model relates to the field of dryers, in particular to a grain discharging device of a dryer, which is characterized in that a plurality of distributing plates and a plurality of discharging plates are fixedly connected with a grain discharging shell and are alternately arranged between two opposite side walls of the grain discharging shell at intervals, a rotary roller is arranged between each distributing plate and each discharging plate adjacent to the distributing plate, and all the rotary rollers are rotatably connected with the grain discharging shell; the material distribution included angle between the two material distribution surfaces of the material distribution plate is a; the discharge included angle between the two discharge surfaces of the discharge plate is b; a > b. The grain distributing device has the advantages that the material distributing plates with the large material distributing included angle a and the material discharging plates with the small material discharging included angle b are matched and installed in a staggered mode, grains can be evenly distributed towards the two sides of the material distributing plates through the material distributing plates, the grain density is reduced, and the stacking and blocking phenomena are avoided. And the discharging plate can reduce the downward flowing resistance of the grains and increase the grain conveying speed, so that quick grain discharging is realized, and the uniformity and economical efficiency of the drying effect are ensured. The rotary roller is used for loosening and pushing the grains, ensuring smooth discharge of the grains and controlling the grain density.

Description

Technical Field

[0001] The utility model relates to the field of dryers, in particular to a grain discharging device for a dryer. Background Art

[0002] The grain discharging mechanism is an important part of the grain dryer system and plays a key role in the grain drying process. The main function of the grain discharging mechanism is to evenly and stably discharge the dried grain from the dryer. It is usually composed of a series of finely designed components, including a rotary roller, a material distributing device, and a control system, etc.

[0003] The current grain discharging mechanism has a large resistance in grain transportation, cannot ensure uniform and rapid grain discharging, and is prone to accumulation or blockage. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is how to make the grain discharging smooth.

[0005] The technical solution for the utility model to solve the above technical problem is as follows: A grain discharging device for a dryer, comprising a material distributing plate, a discharging plate, a rotary roller, and a grain discharging housing. The material distributing plate and the discharging plate are both multiple. The multiple material distributing plates and the multiple discharging plates are both fixedly connected to the grain discharging housing and are alternately arranged at intervals between two opposite side walls of the grain discharging housing. The rotary roller is arranged between adjacent material distributing plates and discharging plates. All the rotary rollers are rotatably connected to the grain discharging housing;

[0006] The material distributing plate has two material distributing surfaces. The upper ends of the two material distributing surfaces intersect. The material distributing angle between the two material distributing surfaces is a; The discharging plate has two discharging surfaces. The upper ends of the two discharging surfaces intersect. The discharging angle between the two discharging surfaces is b; a > b.

[0007] The beneficial effects of the utility model are as follows: The material distributing plate with a larger material distributing angle a and the discharging plate with a smaller discharging angle b are alternately installed. The material distributing plate can make the grain evenly distributed on both sides of it, reduce the grain density, and avoid the occurrence of accumulation and blockage. The discharging plate can reduce the resistance of the grain flowing downward, increase the grain transportation speed, so as to achieve rapid grain discharging, and ensure the uniformity and economy of the drying effect. The rotary roller is used to loosen and push the grain to ensure the smooth discharge of the grain and control the grain density.

[0008] Based on the above technical solution, the utility model can be further improved as follows.

[0009] Further, the material distributing angle a is 55 - 85°, the discharging angle b is 25 - 50°, and a = ×b.

[0010] The beneficial effects of adopting the above further scheme are as follows: The angle design of the material distribution angle a and the discharge angle b makes the grain distribution uniform and the flow smoother.

[0011] Further, the lower end of the discharge surface has a concave arc surface, and the corresponding rotary roller is located within the arc surface.

[0012] The beneficial effects of adopting the above further scheme are as follows: The rotary roller and the arc surface are cooperatively arranged, and the arc surface guides the grain, enabling the grain to flow between the two rotary rollers and be discharged downward.

[0013] Further, the lower end of the material distribution surface has an extension section extending downward, and the lower end of the extension section is tangent to the upper part of the corresponding rotary roller.

[0014] The beneficial effects of adopting the above further scheme are as follows: The extension section is used to block the grain above the rotary roller, preventing the grain from directly entering the gap between the upper part of the rotary roller and the material distribution plate, and avoiding grain jamming or being crushed.

[0015] Further, bearing pads, sealing gaskets, and bearings are sequentially sleeved on the ends of each rotary roller. The bearing pads and the sealing gaskets are both fixedly connected to the grain discharging housing, and the rotary roller is rotatably connected to the grain discharging housing through the bearings.

[0016] The beneficial effects of adopting the above further scheme are as follows: The sealing gasket can prevent the leakage of grain or dust from the installation gap of the rotary roller. The bearing is used to support the rotary roller to make the rotary roller run smoothly. The bearing pad is used to limit the bearing to make the bearing operate reliably.

[0017] Further, it further includes a chain, rotary roller sprockets, a reducer sprocket, and a motor. The motor is fixedly connected to the grain discharging housing, the output shaft of the motor is fixedly connected to the reducer sprocket, the rotary roller sprockets are fixed to the ends of each rotary roller, and the chain is sleeved on all the rotary roller sprockets and the reducer sprocket.

[0018] The beneficial effects of adopting the above further scheme are as follows: The motor drives the chain through the reducer sprocket, thereby driving the synchronous rotation of multiple rotary roller sprockets.

[0019] Further, it further includes a detection switch. The detection switch is fixedly connected to the grain discharging housing and is located on one side of the chain or the rotary roller sprocket.

[0020] The beneficial effects of adopting the above further scheme are as follows: The detection switch is used to detect whether the chain or the rotary roller sprocket is running continuously and normally. It can monitor the grain discharging operation state in real time, ensure the effective and stable operation of the equipment, and improve the production rate.

[0021] Further, it further includes blanking side plates. There are two blanking side plates, and the two blanking side plates are respectively and obliquely fixed on two opposite side walls of the grain discharging housing. A rotary roller is arranged between the blanking side plate and the adjacent material distributing plate or the material discharging plate.

[0022] The beneficial effect of adopting the above further scheme is that the two blanking side plates cooperate with the adjacent rotary rollers to ensure that the grains close to the side walls of the grain discharging housing can also be discharged smoothly and evenly.

[0023] Further, the rotary roller includes a seamless steel pipe and blade plates. There are multiple blade plates, and the multiple blade plates are sequentially arranged along the circumferential direction of the seamless steel pipe and fixedly connected to the seamless steel pipe. The two ends of the blade plate along the circumferential direction of the seamless steel pipe are folded outwards to form blade parts, and the blade parts of two adjacent blade plates are fixedly connected.

[0024] The beneficial effect of adopting the above further scheme is that the rotary roller is assembled by combining a seamless steel pipe and blade plates, has high toughness and welding performance, high structural strength, is not easily broken and fails when being impacted, ensures that the grains will not be blocked or bridged due to the failure of the rotary roller, reduces the downtime, and effectively reduces the operation cost.

[0025] Further, it further includes a hopper and a grain chute pipe. The inlet of the hopper is connected and communicated with the lower end of the grain discharging housing, and one end of the grain chute pipe is connected and communicated with the outlet of the hopper.

[0026] The beneficial effect of adopting the above further scheme is that the grains discharged from the grain discharging housing enter the hopper and flow into the granary or other containers along the grain chute pipe. Description of the Drawings

[0027] Figure 1 It is an exploded view of a grain discharging device of a dryer according to the present utility model, and the hopper and the grain chute pipe are not shown in the figure;

[0028] Figure 2 It is Figure 1 the front view of a grain discharging device of a dryer;

[0029] Figure 3 It is the right view of a grain discharging device of a dryer according to the present utility model;

[0030] Figure 4 It is the partial enlarged view of the end part of the rotary roller according to the present utility model;

[0031] Figure 5 It is the three-dimensional view of the material discharging plate according to the present utility model;

[0032] Figure 6 It is the three-dimensional view of the material distributing plate according to the present utility model;

[0033] Figure 7 This is a cross-sectional view of a grain discharging device of a dryer according to the present utility model.

[0034] In the accompanying drawings, the list of components represented by each reference numeral is as follows:

[0035] 1. Chain; 2. Rotary roller sprocket; 3. Distributing plate; 301. Extension section; 4. Side plate; 5. Rotary roller; 501. Seamless steel pipe; 502. Blade plate; 503. Blade part; 6. Sealing gasket; 7. Front plate; 8. Rear plate; 9. Discharge plate; 901. Arc surface; 10. Lowering side plate; 11. Bearing backing plate; 12. Bearing; 13. Reducer sprocket; 14. Tensioning sprocket; 15. Detection switch; 16. Hopper; 17. Grain chute pipe. Specific embodiments

[0036] The principles and features of the present utility model will be described below with reference to the accompanying drawings. The examples given are only for explaining the present utility model and are not intended to limit the scope of the present utility model.

[0037] As Figures 1-7 shown, this embodiment provides a grain discharging device for a dryer, including a distributing plate 3, a discharge plate 9, a rotary roller 5 and a grain discharging housing. The distributing plate 3 and the discharge plate 9 are both multiple. The multiple distributing plates 3 and the multiple discharge plates 9 are both fixedly connected to the grain discharging housing and are alternately and spacedly arranged between two opposite side walls of the grain discharging housing. The rotary roller 5 is arranged between adjacent distributing plates 3 and discharge plates 9, and all the rotary rollers 5 are rotatably connected to the grain discharging housing;

[0038] The distributing plate 3 has two distributing surfaces, the upper ends of the two distributing surfaces intersect, and the distributing angle between the two distributing surfaces is a; the discharge plate 9 has two discharge surfaces, the upper ends of the two discharge surfaces intersect, and the discharge angle between the two discharge surfaces is b; a > b.

[0039] In the grain discharging device of this embodiment, the distributing plate 3 with a larger distributing angle a is installed in a staggered manner with the discharge plate 9 with a smaller discharge angle b. The distributing plate 3 can make the grains evenly distributed on both sides of it, reduce the grain density, and avoid the occurrence of accumulation and blockage phenomena. The discharge plate 9 can reduce the downward flow resistance of the grains and increase the grain conveying speed, so as to achieve rapid grain discharging and ensure the uniformity and economy of the drying effect. The rotary roller 5 is used to loosen and push the grains, ensure the smooth discharge of the grains, and control the grain density.

[0040] Specifically, as Figure 7 shown, the height positions of the tops of the distributing plate 3 and the discharge plate 9 on the grain discharging housing are the same or approximate. The total height of the discharge plate 9 is greater than the total height of the distributing plate 3. The rotary roller 5 is located between adjacent distributing plates 3 and discharge plates 9 and is located between the bottom of the distributing plate 3 and the bottom of the discharge plate 9.

[0041] Specifically, as Figure 5 and Figure 6 shown, the material distributing plate 3 and the discharging plate 9 are both formed into an inverted V shape by bending a flat plate, and support plates are fixed between the two material distributing surfaces and the two discharging surfaces respectively to increase the structural strength of the material distributing plate 3 and the discharging plate 9. A reinforcing plate is also fixed at the bending part at the top of the discharging plate 9 to prevent the discharging angle b from being too small and affecting the strength of the discharging plate 9.

[0042] Specifically, the grain discharging housing includes two side plates 4, a front plate 7 and a rear plate 8. One of the side plates 4, the front plate 7, the other side plate 4 and the rear plate 8 are connected end to end in sequence to form a cylindrical grain discharging housing.

[0043] On the basis of any of the above solutions, the material distributing angle a is 55 - 85°, the discharging angle b is 25 - 50°, and a = 1.5 - 3.3 × b.

[0044] The design of the material distributing angle a and the discharging angle b enables the grains to be evenly distributed and flow more smoothly.

[0045] On the basis of any of the above solutions, the lower end of the discharging surface has a concave arc surface 901, and the corresponding rotary roller 5 is located within the arc surface 901.

[0046] The rotary roller 5 and the arc surface 901 are cooperatively arranged. The arc surface 901 guides the grains so that the grains flow between the two rotary rollers 5 and are discharged downward.

[0047] Specifically, the arc surfaces 901 at the lower ends of the two discharging surfaces of the discharging plate 9 extend in opposite directions.

[0048] On the basis of any of the above solutions, the lower end of the material distributing surface has an extending section 301 extending downward, and the lower end of the extending section 301 is tangent to the upper part of the corresponding rotary roller 5.

[0049] The extending section 301 is used to block the grains above the rotary roller 5 to prevent the grains from directly entering the gap between the upper part of the rotary roller 5 and the material distributing plate 3, and to prevent the grains from getting stuck or being crushed.

[0050] Specifically, as Figure 6 shown, the extending sections 301 of the two material distributing surfaces of the material distributing plate 3 first extend downward and then extend towards each other.

[0051] On the basis of any of the above solutions, a bearing backing plate 11, a gasket 6 and a bearing 12 are sequentially sleeved on the end of each rotary roller 5. The bearing backing plate 11 and the gasket 6 are both fixedly connected to the grain discharging housing, and the rotary roller 5 is rotatably connected to the grain discharging housing through the bearing 12.

[0052] The gasket 6 can prevent grain or dust from leaking through the installation gap of the rotary roller 5. The bearing 12 is used to support the rotary roller 5 to make the rotary roller 5 run smoothly. The bearing backing plate 11 is used to position the bearing 12 to make the bearing 12 run reliably.

[0053] Specifically, bearing backing plates 11, gaskets 6 and bearings 12 are provided at both ends of the rotary roller 5. The inner ring of the bearing 12 is fixed to the rotary roller 5, and its outer ring is fixed to the grain discharging housing.

[0054] During installation, both ends of the rotary roller 5 are respectively installed in the through holes of the front plate 7 and the rear plate 8. Then, the bearing backing plate 11 and the gasket 6 are passed through the shaft ends of the rotary roller 5, and the bearing 12 is installed on the shaft head of the rotary roller 5 and fixed to the front plate 7 and the rear plate 8 together with the bearing backing plate 11 and the gasket 6.

[0055] On the basis of any of the above solutions, it further includes a chain 1, a rotary roller sprocket 2, a reducer sprocket 13 and a motor. The motor is fixedly connected to the grain discharging housing. The output shaft of the motor is fixedly connected to the reducer sprocket 13. The rotary roller sprocket 2 is fixed to the end of each rotary roller 5. The chain 1 is sleeved on all the rotary roller sprockets 2 and the reducer sprocket 13.

[0056] The motor drives the chain 1 through the reducer sprocket 13, thereby driving multiple rotary roller sprockets 2 to rotate synchronously.

[0057] Optionally, the chain 1 is sleeved on the outside of all the rotary roller sprockets 2 and the reducer sprocket 13; or, as Figure 2 shown, the chain 1 alternately bypasses the upper side and the lower side of multiple rotary roller sprockets 2 and is sleeved on the outside of the reducer sprocket 13.

[0058] Furthermore, it further includes at least one tensioning sprocket 14. The tensioning sprocket 14 is rotatably installed on the grain discharging housing, other fixed external parts or tensioning sliders with adjustable and fixed positions. The chain 1 is also sleeved on the outside of all the tensioning sprockets 14 and is tensioned by the tensioning sprockets 14.

[0059] On the basis of any of the above solutions, it further includes a detection switch 15. The detection switch 15 is fixedly connected to the grain discharging housing and is located on one side of the chain 1 or the rotary roller sprocket 2.

[0060] The detection switch 15 is used to detect whether the chain 1 or the rotary roller sprocket 2 is running continuously and normally. It can monitor the grain discharging operation state in real time, ensure the effective and stable operation of the equipment, and improve the production efficiency.

[0061] Specifically, it further includes a controller and an alarm. The controller is communicatively connected to the detection switch 15 and the alarm respectively. The detection switch 15 acquires sensing data and transmits it to the controller. The controller determines whether the chain 1 or the rotary roller sprocket 2 is running continuously and normally based on the sensing data. If it is not running continuously and normally, an alarm message is sent to the alarm. The alarm is a display screen, an alarm lamp, an alarm horn, etc.

[0062] Specifically, since each link of the chain 1 has a through hole and the rotary roller sprocket 2 is a toothed structure, when the chain 1 or the rotary roller sprocket 2 rotates continuously, there are vacant positions that appear at intervals in both of them. The detection switch 15 will detect the signals that appear at intervals, that is, the sensing data. The controller can determine whether the chain 1 or the rotary roller sprocket 2 is running continuously and normally based on the frequency of the sensing data appearing.

[0063] Optionally, the detection switch 15 is a contact or non-contact sensor.

[0064] On the basis of any of the above solutions, it further includes blanking side plates 10. There are two blanking side plates 10. The two blanking side plates 10 are respectively inclined and fixed on two opposite side walls of the grain discharging housing, and a rotary roller 5 is provided between the blanking side plate 10 and the adjacent distributing plate 3 or the discharging plate 9.

[0065] The two blanking side plates 10 cooperate with the adjacent rotary roller 5 to ensure that the grain near the side wall of the grain discharging housing can also be discharged smoothly and evenly.

[0066] Specifically, the two blanking side plates 10 are respectively fixed on two side plates 4.

[0067] In one specific example, as Figure 7 shown, the arrangement of the multiple distributing plates 3 and the multiple discharging plates 9 is that both ends are distributing plates 3. The shapes and inclination angles of the two blanking side plates 10 are the same as the discharging surface.

[0068] In another example, the arrangement of the multiple distributing plates 3 and the multiple discharging plates 9 is that both ends are discharging plates 9. The shapes and inclination angles of the two blanking side plates 10 are the same as the distributing surface.

[0069] In other examples, the arrangement of the multiple distributing plates 3 and the multiple discharging plates 9 is that one end is a distributing plate 3 and the other end is a discharging plate 9. The shapes and inclination angles of the two blanking side plates 10 conform to the rule of alternating arrangement of the distributing plate 3 and the discharging plate 9. That is, the shape and inclination angle of the blanking side plate 10 adjacent to the distributing plate 3 are the same as the discharging surface, and the shape and inclination angle of the blanking side plate 10 adjacent to the discharging plate 9 are the same as the distributing surface.

[0070] On the basis of any of the above solutions, as Figure 4As shown, the rotating roller 5 includes a seamless steel tube 501 and a blade plate 502, and the blade plates 502 are multiple. The multiple blade plates 502 are arranged in sequence along the circumference of the seamless steel tube 501 and are fixedly connected to the seamless steel tube 501. The blade plates 502 are folded outward at both ends along the circumference of the seamless steel tube 501 to form blade portions 503, and the blade portions 503 of two adjacent blade plates 502 are fixedly connected.

[0071] The rotary roller 5 is assembled by combining a seamless steel pipe 501 and a blade plate 502, has high toughness and welding performance, high structural strength, and is not easy to break or fail when impacted, ensuring that grain will not be blocked or bridged due to failure of the rotary roller 5, thereby reducing downtime and effectively lowering operating costs.

[0072] Specifically, the blade portion 503 is arranged along the radial direction of the seamless steel pipe 501 , or has an angle with the radial direction of the seamless steel pipe 501 .

[0073] Optionally, the blade plate 502 is welded or bolted to the seamless steel pipe 501 , and the blade plate 502 is welded or bolted to adjacent blade plates 502 .

[0074] On the basis of any of the above schemes, it also includes a hopper 16 and a grain chute 17 , wherein the inlet of the hopper 16 is connected and communicated with the lower end of the grain discharge shell, and one end of the grain chute 17 is connected and communicated with the outlet of the hopper 16 .

[0075] The grain discharged from the grain discharging housing enters the hopper 16 and flows into a granary or other containers along the grain chute 17 .

[0076] Specifically, the other end of the grain chute 17 is communicated with a granary or other containers.

[0077] The grain discharge device of a dryer of the present embodiment can be adapted to grains of various types and characteristics, and can effectively dry grains, whether they are cereals, beans, or other agricultural products.

[0078] In the description of the present invention, it should be noted that the terms "upper", "lower", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0079] In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0080] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0081] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and defined, the terms "installed", "connected", and "connected" 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 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 utility model can be understood according to specific circumstances.

[0082] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A grain discharge device for a dryer, characterized in that: It comprises a material distribution plate (3), a material discharge plate (9), a rotary roller (5) and a grain discharge shell, wherein the material distribution plate (3) and the material discharge plate (9) are both multiple, and the multiple material distribution plates (3) and the multiple material discharge plates (9) are all fixedly connected to the grain discharge shell and are alternately arranged between two opposite side walls of the grain discharge shell, and the rotary roller (5) is arranged between adjacent material distribution plates (3) and the material discharge plates (9), and all the rotary rollers (5) are rotatably connected to the grain discharge shell; The material dividing plate (3) has two material dividing surfaces, the upper ends of the two material dividing surfaces intersect, and the material dividing angle between the two material dividing surfaces is a; the material discharging plate (9) has two material discharging surfaces, the upper ends of the two material discharging surfaces intersect, and the material discharging angle between the two material discharging surfaces is b; a>b.

2. A grain discharge device for a dryer according to claim 1, characterized in that: The material distribution angle a is 55-85°, the material discharge angle b is 25-50°, and a=(1.5-3.3)×b.

3. A grain discharge device for a dryer according to claim 1, characterized in that: The lower end of the discharge surface has a concave arc surface (901), and the corresponding rotating roller (5) is located inside the arc surface (901).

4. A grain discharge device for a dryer according to claim 1, characterized in that: The lower end of the material dividing surface has an extension section (301) extending downward, and the lower end of the extension section (301) is tangent to the upper part of the corresponding rotating roller (5).

5. A grain discharge device for a dryer according to claim 1, characterized in that: The end of each rotating roller (5) is sequentially sleeved with a bearing pad (11), a sealing pad (6) and a bearing (12); the bearing pad (11) and the sealing pad (6) are both fixedly connected to the grain discharge housing; and the rotating roller (5) is rotatably connected to the grain discharge housing via the bearing (12).

6. A grain discharge device for a dryer according to claim 1, characterized in that: It also includes a chain (1), a rotating roller sprocket (2), a reducer sprocket (13) and a motor, wherein the motor is fixedly connected to the grain discharge housing, the output shaft of the motor is fixedly connected to the reducer sprocket (13), the end of each rotating roller (5) is fixed with the rotating roller sprocket (2), and the chain (1) is sleeved on all the rotating roller sprockets (2) and the reducer sprocket (13).

7. A grain discharge device for a dryer according to claim 6, characterized in that: It also includes a detection switch (15), which is fixedly connected to the grain discharge housing and is located on one side of the chain (1) or the rotary roller sprocket (2).

8. A grain discharge device for a dryer according to claim 1, characterized in that: It also includes a material discharge side plate (10), wherein there are two material discharge side plates (10), and the two material discharge side plates (10) are respectively tilted and fixed to two opposite side walls of the grain discharge shell, and the rotating roller (5) is provided between the material discharge side plate (10) and the adjacent material dividing plate (3) or the material discharge plate (9).

9. A grain discharge device for a dryer according to claim 1, characterized in that: The rotating roller (5) comprises a seamless steel tube (501) and a blade plate (502), wherein the blade plates (502) are multiple, and the multiple blade plates (502) are sequentially arranged along the circumference of the seamless steel tube (501) and fixedly connected to the seamless steel tube (501), and the two ends of the blade plates (502) along the circumference of the seamless steel tube (501) are folded outward to form blade portions (503), and the blade portions (503) of two adjacent blade plates (502) are fixedly connected.

10. A grain discharge device for a dryer according to any one of claims 1 to 9, characterized in that: It also includes a hopper (16) and a grain chute (17), wherein the inlet of the hopper (16) is connected and communicated with the lower end of the grain discharge shell, and one end of the grain chute (17) is connected and communicated with the outlet of the hopper (16).

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