Grain distributing device with central slow descending joint

Abstract

The invention belongs to the technical field of filling devices in storage devices, and particularly relates to a grain distributing device with a central slow descending section, which comprises the central slow descending section, a distributing device central pipe is arranged above the central slow descending section, a feeding pipe is arranged above the distributing device central pipe, and a radiation type distributing device is arranged on the periphery of the distributing device central pipe. A plurality of inclined chutes are arranged on the radiation type distributing device, a grain outlet hole is formed in the central slow descending section, an overflow buffer and a flow guide buffer are arranged in the central slow descending section, the overflow buffer is arranged above the flow guide buffer, and under the action of the overflow buffer and the flow guide buffer in the central slow descending section, the grain outlet hole is formed in the grain outlet hole. The grain forms irregular bouncing motion, the descending speed is greatly reduced, the purposes of preventing grading and reducing breakage are achieved, the flowing-out grain forms a cone shape, the grain in the stock bin is filled into a uniform plane shape under the action of the radiation type distributing device, and bin flattening operation is reduced or avoided.

Description

Technical Field

[0001] This application belongs to the technical field of filling devices in storage devices, and particularly relates to a grain distribution device with a central slow-down section. Background Art

[0002] In the field of storage devices, a silo is a common grain storage device. The height dimension of the silo is relatively high, generally more than 3 meters, and some silos can reach more than 10 meters. Grains enter the silo from the upper end of the silo. If the grains fall directly, the high-speed movement of the grains will increase the degree of grain breakage. In addition, during the process of the grains falling freely automatically, due to the size, weight, shape, impurities, etc. of the grains, natural stratification and classification are formed, which leads to the automatic classification of the grains. The automatic classification of the grains will affect the effective ventilation and uniform ventilation of the grains, resulting in phenomena such as heating, mildew, germination, and deterioration of the grains during the storage period, seriously affecting the quality of the grains and being not conducive to the safe storage of the grains.

[0003] During the falling process of the grains, the top surface of the grains will show uneven distribution, and leveling treatment is still required. If too much grain accumulates in one position or other positions, the subsequent leveling work will be more difficult. Summary of the Invention

[0004] To solve the above problems, this application provides a grain distribution device with a central slow-down section.

[0005] The first object of this application is to provide a grain distribution device with a central slow-down section. Inside the central slow-down section, under the action of the overflow buffer and the diversion buffer, the grains form irregular bouncing movements, and the falling speed is significantly reduced. Grains of various levels will be mixed more evenly, achieving the purpose of preventing classification and reducing breakage, and gradually flowing out from the grain outlet of the central slow-down section to form a conical grain arrangement. Under the action of the radial distributor, the grains in the silo are filled into a uniform planar shape, reducing or avoiding the leveling operation.

[0006] To achieve the first object of this application, the technical solution of this application is as follows:

[0007] A grain and fabric device with a central slow - descent section is installed in a silo. It includes a central slow - descent section. There is a ventilation cylinder arranged on the outer periphery of the central slow - descent section. Above the central slow - descent section, there is a central tube of the fabricator. Above the central tube of the fabricator, there is a feed pipe. A radial fabricator is arranged on the outer periphery of the central tube of the fabricator. There are several inclined chutes arranged on the radial fabricator. There are grain outlet holes arranged on the central slow - descent section. An overflow buffer and a diversion buffer are arranged inside the central slow - descent section. The overflow buffer is arranged above the diversion buffer. After the grain enters the central tube of the fabricator from the feed pipe and then enters the central slow - descent section, under the action of the overflow buffer and the diversion buffer, the grain forms an irregular bouncing motion, and the descending speed drops significantly. Grains of various grades will be mixed more evenly, achieving the purpose of preventing classification and reducing breakage, and gradually flowing out from the grain outlet holes of the central slow - descent section to form a conical grain arrangement. After the central slow - descent section is filled with grain, the grain accumulates in the central tube of the fabricator and flows out from the chutes, gradually filling the grain in the silo into a flat surface. Subsequently, the discharge pipes of the chutes are fully opened, making the grain evenly arranged in the silo.

[0008] Further, the central slow - descent section includes a grain - discharging section and a heat - preservation section arranged at the upper end of the grain - discharging section. The grain - discharging section includes four segments: a bottom grain - discharging section, a lower - end grain - discharging section, a middle - end grain - discharging section, and an upper - end grain - discharging section. The heat - preservation section includes three segments: a lower - end heat - preservation section, a middle - end heat - preservation section, and an upper - end heat - preservation section. At least one overflow buffer and at least one diversion buffer are arranged in the lower - end grain - discharging section, the middle - end grain - discharging section, the upper - end grain - discharging section, the lower - end heat - preservation section, and the middle - end heat - preservation section. Grain outlet holes are arranged on the lower - end grain - discharging section, the middle - end grain - discharging section, the upper - end grain - discharging section, and the middle - end heat - preservation section. The grain outlet holes are arranged above the overflow buffer. Grain outlet holes are arranged on the bottom grain - discharging section. Some segments of this application are provided with grain outlet holes, so that the unclassified and slowly - descended grain in the central slow - descent section slowly flows out from the grain outlet holes and forms a conical arrangement, and reduces the falling height of the grain flowing out from the grain outlet holes, reducing the breakage degree and classification degree of the grain flowing out from the grain outlet holes.

[0009] Further, the overflow buffer includes a central buffer. The central buffer is in a bucket - like structure. An overflow pipe is arranged on the outer periphery of the central buffer. The overflow pipe communicates with the internal space of the central buffer.

[0010] Further, the diversion buffer includes a forward buffer bin and a reverse buffer bin. The forward buffer bin is in an inverted bucket - like structure. The reverse buffer bin is in a bucket - like structure. The reverse buffer bin is arranged at the upper end of the forward buffer bin and the lower end of the reverse buffer bin is inserted into the upper end of the forward buffer bin. The side wall of the forward buffer bin is a perforated plate.

[0011] Further, the central pipe of the distributor includes an overflow distributor hopper, the inner diameter of the overflow distributor hopper is larger than that of the feed pipe, a conical cylinder is arranged below the overflow distributor hopper, the conical cylinder is arranged at the upper end of the central slow-down section, a chute mounting plate is arranged on the outer periphery of the overflow distributor hopper, the chute of the radial distributor is arranged on the chute mounting plate, overflow holes are formed in the outer periphery of the overflow distributor hopper, and the overflow holes are arranged above the chute mounting plate.

[0012] Further, the chute includes a front chute connected to the central pipe of the distributor, a front hook chute is arranged at the end of the front chute, an intermediate chute is arranged at the end of the front hook chute, a rear chute is arranged at the end of the intermediate chute, discharge pipes are arranged on the front chute, the intermediate chute and the rear chute, and a discharge control assembly is arranged on the discharge pipe.

[0013] Further, a lifting assembly is arranged on the central pipe of the distributor, and the end of the lifting assembly is connected to the chute.

[0014] Further, the central pipe of the distributor is rotatably connected to the feed pipe, or the feed pipe is rotatably matched with the silo, and elastic telescopic reset components are arranged between the front chute, the rear chute and the intermediate chute.

[0015] Further, a material dredging device is arranged below the central pipe of the distributor, and a pneumatic gate is arranged at the lower end of the material dredging device.

[0016] Further, an upper air collecting box is arranged at the upper end of the central slow-down section, a lower air collecting box is arranged at the lower end of the central slow-down section, the upper air collecting box and the lower air collecting box are communicated with the ventilation cylinder, the upper air collecting box is connected to an air inlet fan through an air inlet pipe, or the upper air collecting box is connected to a central ventilator through a ventilation pipe, and the upper air collecting box is connected to a circulation fumigation machine through a fumigation pipe.

[0017] Compared with the prior art, the beneficial effects of the present application are as follows:

[0018] In the present application, grains enter the central pipe of the distributor from the feed pipe and enter the central slow-down section from the central pipe of the distributor. This process is through the collection and speed reduction of structures such as the collection hopper, the conical cage, and the material dredging device, so that the grains enter the central slow-down section at a relatively slow descending speed. Inside the central slow-down section, under the action of the overflow buffer and the diversion buffer, the grains form an irregular bouncing motion, and the descending speed is greatly reduced. Grains of various grades will be mixed more evenly, achieving the purpose of preventing classification and reducing breakage, and gradually flowing out from the grain outlet holes of the central slow-down section, forming a conical grain arrangement, and making the grains at the top of the silo more evenly flat under the action of the radial distributor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings forming a part of this application are used to provide a further understanding of the application. The schematic embodiments and descriptions thereof of the application are used to explain the application and do not constitute an improper limitation of the application.

[0020] Figure 1 Schematic diagram of the overall structure of the first implementation scheme of the present application;

[0021] Figure 2 Schematic diagram of the overall structure of the second implementation scheme of the present application;

[0022] Figure 3 Schematic diagram of the overall structure of the third implementation scheme of the present application;

[0023] Figure 4 Schematic diagram of the grain distribution of the present application. The dotted line in the figure indicates the stacking shape of the grain;

[0024] Figure 5 Schematic diagram of the top view structure of the present application;

[0025] Figure 6 Schematic diagram of the overall structure of an implementation scheme of the radial distributor of the present application;

[0026] Figure 7 Schematic diagram of the overall structure of an implementation scheme of the cloth pipe of the present application;

[0027] Figure 8 For Figure 2 Enlarged view structure diagram of area A in

[0028] Figure 9 Schematic diagram of the overall structure of the material loosening device of the present application;

[0029] Figure 10 Schematic diagram of the overall structure of an implementation scheme of the central pipe of the distributor of the present application;

[0030] Figure 11 For Figure 10 Top view structure diagram of

[0031] Figure 12 Schematic diagram of the overall structure of the upper heat preservation section of the present application.

[0032] Figure 13 Schematic diagram of the overall structure of an implementation scheme inside the slow-down section of the present application;

[0033] Figure 14 Schematic diagram of the overall structure of an implementation scheme of the bottom grain outlet section of the present application;

[0034] Figure 15 Top view structure diagram of an implementation scheme of the overflow buffer of the present application;

[0035] Figure 16 For Figure 15 Schematic diagram of the structure sectioned along section B in

[0036] Figure 17 It is a structural schematic diagram of a diversion buffer.

[0037] In the figure:

[0038] 1. Bottom grain outlet section, 2. Lower end grain outlet section, 3. Middle end grain outlet section, 4. Upper end grain outlet section, 5. Lower end heat preservation section, 6. Middle heat preservation section, 7. Upper end heat preservation section, 8. Upper air collecting box, 9. Cone, 10. Overflow feeding hopper, 11. Front chute, 12. Front hook chute, 13. Middle chute, 14. Rear hook chute, 15. Rear end chute, 16. Lifting lug, 17. Suspension chain, 18. Fixed support, 19. Collection hopper, 20. Induced draft fan, 21. Discharge pipe, 22. Overflow buffer, 23. Diversion buffer, 24. Grain outlet hole, 25. Central buffer, 26. Reinforcing plate, 27. Overflow long pipe, 28. Reverse buffer bin, 29. Forward buffer bin, 30. Orifice plate, 31. Lower air collecting box, 32. Ventilation cylinder, 33. Circulating fumigation machine, 34. Central ventilation fan, 35. Lifting assembly, 36. Grain cooling air return opening, 37. Discharge control component, 38. Elastic telescopic reset component, 39. Material dredger, 40. Inspection hole, 41. Material collecting bin, 42. Overflow short trough, 43. Upper overflow opening, 44. Pneumatic gate, 45. Inclined air inlet pipe, 46. Impact ball, 47. Sealed bin, 48. Impact plate, 49. Ash cleaning opening. Specific embodiments

[0039] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0040] It should be noted that the terms used here are only for describing specific embodiments and are not intended to limit the exemplary embodiments of the present application. As used here, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0041] In the present application, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only relationship words determined for the convenience of describing the structural relationship of each component or element of the present application and do not specifically refer to any component or element in the present application. It should not be construed as a limitation to the present application.

[0042] Embodiment 1

[0043] This embodiment is a grain distribution device with a central buffer section, which is arranged inside the silo. For example, the silo is a shallow silo for storing grain. Therefore, the grain distribution device in this embodiment needs to evenly distribute the grain and achieve the purposes of preventing classification and reducing breakage.

[0044] In this embodiment, the grain is fed into the silo by a hoist or a screw feed pipe. The feeding amount of the grain suddenly increases first, and the impact on the structure of the central buffer section keeps changing. As the feeding amount stabilizes, the impact of the grain on the structure of the central buffer section also stabilizes. At the end of the feeding process, the amount of grain in the hoist or the screw feed pipe decreases, and the feeding amount of the grain also continuously decreases, and the impact on the structure of the central buffer section keeps changing. Therefore, in addition to coping with the changing feeding impact, the structure of this embodiment also needs to focus on coping with the impact of the stable grain feeding on the overall structure.

[0045] As Figures 1 - 4 shown, the silo of this embodiment includes a silo outer shell and a silo top cover. The grain distribution device of this embodiment includes a feeding end. A central buffer section is installed at the lower end of the feeding end, and a distributor central pipe is installed inside the feeding end. A number of chutes are installed on the distributor central pipe. The above structure forms the basic structure of the grain distributor in this embodiment.

[0046] The feeding end of this embodiment includes a feed pipe passing through the silo top cover. A rain cap is installed at the upper end of the feed pipe. A collecting hopper 19 is provided on the feed pipe to achieve the purpose of the first material collection of the grain entering the silo. The lower end of the feed pipe is installed with a distributor central pipe. The central buffer section is arranged at the lower end of the distributor central pipe. A fixed bracket 18 is installed on the outer periphery of the distributor central pipe. As an implementation scheme, the fixed bracket 18 is fixed on the silo top cover. The distributor central pipe includes an overflow distribution hopper 10. An overflow hole is provided on the side of the overflow distribution hopper 10. The angle between the overflow hole and the horizontal plane is 38° - 45°. A chute installation plate is installed on the side of the overflow distribution hopper 10. The chute installation plate is arranged at the lower end of the overflow hole. The inner diameter of the overflow distribution hopper 10 is larger than the inner diameter of the feed pipe. As Figures 10 - 11 shown, a cone 9 is arranged at the lower end of the overflow distribution hopper 10 to reduce the size of the lower end of the overflow distribution hopper 10 and achieve the purpose of the grain concentrating and entering the central buffer section. In addition, the cone 9 and the overflow distribution hopper 10 can also be separately arranged.

[0047] There are two schemes for the chute in this embodiment, namely a chute pipe and a chute. If there is an overflow hole on the distributor central pipe, the chute is preferably a chute.

[0048] As one of the core structures, the central descending section of this embodiment includes a bottom grain discharging section 1. At the upper end of the bottom grain discharging section 1, a lower end grain discharging section 2 is installed. At the upper end of the lower end grain discharging section 2, a middle end grain discharging section 3 is installed. At the upper end of the middle end grain discharging section 3, an upper end grain discharging section 4 is installed. At the upper end of the upper end grain discharging section 4, a lower end heat preservation section 5 is installed. At the upper end of the lower end heat preservation section 5, a middle end heat preservation section 6 is installed. At the upper end of the middle end heat preservation section 6, an upper end heat preservation section 7 is installed. The bottom grain discharging section 1 of this embodiment has a grain discharging hole 24. At the lower end of the bottom grain discharging section 1, a lower air collecting box 31 is installed. At the upper end of the upper end heat preservation section 7, an upper air collecting box 8 is installed. Specifically, as Figure 13 shown, the height dimensions of the lower end grain discharging section 2 and the middle end grain discharging section 3 will be adjusted according to requirements. The lower end grain discharging section 2 and the middle end grain discharging section 3 both include a central cylinder body. Flange plates are installed at both the upper end and the lower end of the central cylinder body. The flange plates are connected to the central cylinder body through flange reinforcing ribs. A ventilation cylinder 32 is arranged on the outer periphery of the central cylinder body. An inner ring reinforcing belt is installed in the middle of the interior of the central cylinder body. The inner ring reinforcing belt is welded to the central cylinder body. An overflow buffer 22 and a diversion buffer 23 are installed inside the central cylinder body. The overflow buffer 22 is arranged above the diversion buffer 23. A grain discharging hole 24 is opened on the outer periphery of the central cylinder body. The overflow buffer 22 and the diversion buffer 23 are arranged below the inner ring reinforcing belt. The grain discharging hole 24 is arranged above the inner ring reinforcing belt. Specifically, the overflow buffer 22 includes a central buffer 25 in the middle. The central buffer 25 is in an inverted conical shape. The outlet diameter at the lower end of the central buffer 25 is small, and the diameter at the upper end is large. Reinforcing plates 26 are welded to the inner wall of the central buffer 25. An overflow long tube 27 communicating with the inside of the central buffer 25 is installed on the outer periphery of the central buffer 25. For example, three overflow long tubes 27 are arranged for each central buffer 25 in this embodiment. The connection ports of the overflow long tubes 27 and the central buffer 25 are arranged above the outlet of the central buffer 25. Openings are provided at the ends of the overflow long tubes 27. As an excellent implementation scheme, the angle of the overflow long tube 27 with the horizontal plane is arranged to be 10°. In Figure 16In this case, the angle is represented by α to ensure that the grain slowly flows out from the overflow long pipe 27. The diversion buffer 23 of this embodiment includes an inverted buffer bin 28 and a forward buffer bin 29 arranged at the lower end of the inverted buffer bin 28. The inverted buffer bin 28 is an inverted conical bin body, and the forward buffer bin 29 is a conical bin body. The lower end of the inverted buffer bin 28 is arranged inside the forward buffer bin 29. The side wall of the forward buffer bin 29 is a perforated plate 30 with an opening ratio of 28% - 35%. For example, the opening ratio of this embodiment can be 30%. The grain falling from the outlet of the overflow long pipe 27 falls into the inverted buffer bin 28 and continues to roll along the inner wall of the inverted buffer bin 28 and enters the forward buffer bin 29. A part of the rolling grain leaks out from the holes of the perforated plate 30, another part continues to fall after contacting the inner wall of the forward buffer bin 29, and a small part directly flows out from the lower end opening of the forward buffer bin 29. In addition, when air flow is input into the ventilation tube, the air flow will also pass through the perforated plate of the forward buffer bin 29, so that the air flow is mixed with the grain. The grain moves in a bouncing motion obliquely downward, while the air flow flows obliquely upward in the form of small air flows along the holes on the perforated plate, thereby reducing the bouncing speed and the falling speed of the grain and making the grain mix more fully, avoiding the grading of the grain caused by factors such as weight during the falling process.

[0049] The upper grain outlet section 4 of this embodiment also has an overflow buffer 22 and a diversion buffer 23, but does not have a grain outlet.

[0050] The lower heat preservation section 5, the middle heat preservation section 6, and the upper heat preservation section 7 of this embodiment all have an overflow buffer 22 and a diversion buffer 23. Their cylinders are provided with heat preservation plates or heat preservation inner walls. Only the middle heat preservation section 6 has a grain outlet, and a grain outlet branch pipe is also connected to the grain outlet on the middle heat preservation section 6, so that the grain outlet branch pipe extends outward, making the grain overflow further.

[0051] Specifically, the central slow - descent section all has a ventilation tube 32. The bottom end of the central slow - descent section of this embodiment is connected to the lower air - collecting box 31, and the upper end of the central slow - descent section is connected to the upper air - collecting box 8. As Figure 14 shown, in this embodiment, a maintenance hole 40 is arranged on the side of the lowermost end of the bottom grain outlet section 1. The maintenance hole 40 is communicated with the ventilation tube 32, and a maintenance door blind plate is installed on the maintenance hole 40. The maintenance door blind plate is installed on the flange of the maintenance hole 40 through bolts. A grain outlet hole 24 is opened on the bottom grain outlet section 1. The grain outlet hole 24 is arranged at the middle and lower parts of the central cylinder of the bottom grain outlet section 1, so that the grain starts to be discharged from the bottom grain outlet section 1 at the beginning.

[0052] As an implementation, the upper air box 8 is arranged between the conical cylinder 9 and the central slow-down section. An air inlet fan 20 is installed on the top cover of the silo. The air inlet fan 20 is connected to the upper air box 8 through an air inlet pipe. The upper air box 8 is connected to the ventilation cylinder 32 on the central slow-down section and is continuously connected to the lower air box 31 to achieve the ventilation effect.

[0053] As another implementation, the upper air box 8 is arranged between the conical cylinder 9 and the central slow-down section. A central air ventilation fan 34 and a circulating fumigation machine 33 are installed on the top cover of the silo. The central air ventilation fan 34 is connected to the upper air box 8 through a ventilation pipe. The circulating fumigation machine 33 is connected to the upper air box 8 through a fumigation pipe. And the central air ventilation fan 34 and the circulating fumigation machine 33 are arranged oppositely on the top cover of the silo.

[0054] In this embodiment, a chilled air return opening 36 can be opened on the upper air box 8. An elbow is installed on the chilled air return opening 36. The opening direction of the elbow is arranged downward. The chilled air return opening 36 can be connected to a ventilation device to guide the air flow at the upper end of the silo to the outside of the silo, ensuring the air circulation and temperature and humidity adjustment inside the silo. In addition, the chilled air return opening 36 can also be connected to an automated control system. The temperature and humidity inside the silo are detected by sensors, and the opening and closing state of the return opening is automatically adjusted to ensure that the grain storage environment is always in the best state.

[0055] In this embodiment, the outlet at the lower end of the central buffer 25 is relatively small. Its inner diameter is one-sixth to one-tenth of the inner diameter of the inlet at the upper end. For example, the diameter of the outlet at the lower end of the central buffer 25 in this embodiment is 50 mm, and the diameter of the inlet at the upper end is 400 mm. The inner diameter of the overflow long pipe 27 is slightly smaller than the diameter of the outlet at the lower end of the central buffer 25. The angle between the inner wall of the central buffer 25 and the horizontal plane is 30° - 33°. The angle between the inner wall of the inverted buffer bin 28 and the horizontal plane is 35° - 40°. The slow-down and anti-classification of grains are achieved through the combination of the overflow buffer 22 and the diversion buffer 23.

[0056] As a specific implementation, such as Figure 12As shown, the upper heat preservation section 7, as the first structure in contact with the grain, plays a key role in the slow descent. Therefore, the upper heat preservation section 7 of this embodiment has a more special slow descent structure. Specifically, there is no grain outlet on the cylinder body of the upper heat preservation section 7. A material collecting bin 41, a reverse buffer bin 28 and a forward buffer bin 29 are installed in the cylinder body of the upper heat preservation section 7. The reverse buffer bin 28 has an inverted conical structure, and the forward buffer bin 29 has an upright conical structure. More specifically, the material collecting bin 41 has an inverted conical structure. The material collecting bin 41 is a kind of central buffer 25, but the inclination angle of the material collecting bin 41 is larger, and the inclination angle is between 40° - 50°, reducing the residence time of the grain in the material collecting bin 41. Moreover, the upper opening size of the material collecting bin 41 is larger than the lower size of the conical cylinder 9, so that the material collecting bin 41 completely bears the grain entering the central slow descent section. An overflow short trough 42 connected by hinge is installed on the outer periphery of the bottom end of the material collecting bin 41. The lower end of the end of the overflow short trough 42 close to the outer periphery of the material collecting bin 41 is hinged to the material collecting bin 41, and an arc-shaped sleeve is installed on the outer periphery of the overflow short trough 42. An arc-shaped guide rod is installed on the outer periphery of the material collecting bin 41, and the arc-shaped guide rod passes through the arc-shaped sleeve. A buffer spring is installed on the arc-shaped guide rod. The buffer spring is arranged on the outer periphery of the arc-shaped guide rod between the material collecting bin 41 and the overflow short trough 42. In addition, an overflow port is also installed on the outer periphery of the upper end of the material collecting bin 41, and the outlet of the overflow port faces the overflow short trough 42. As a large amount of grain enters the material collecting bin 41, the grain flows out not only from the lower end of the material collecting bin 41, but also from the overflow short trough 42 and the overflow port, and mainly flows out from the overflow short trough 42 and the overflow port. The grain flowing out from the overflow port directly enters the overflow short trough 42.

[0057] In this embodiment, the forward buffer bin 29 is arranged at the lower end of the material collecting bin 41, the reverse buffer bin 28 is arranged at the lower end of the forward buffer bin 29. The upper end of the forward buffer bin 29 has an opening, and the size of this opening is much smaller than the size of the opening at the lower end of the material collecting bin 41. And there is no orifice plate 30 on the upper side of the forward buffer bin 29. Orifices are formed in the middle and lower sides of the forward buffer bin 29 to form the orifice plate 30. The inclination angle of the side wall of the forward buffer bin 29 is 25° - 30°, and the forward buffer bin 29 does not contact the inner wall of the upper heat preservation section 7. The upper end of the inverted buffer bin contacts the inner wall of the upper heat preservation section 7.

[0058] In addition, as Figures 5 - 6As shown in the figure, the core structure of this embodiment further includes a radial distributor. For example, the overflow hopper 10 of this embodiment includes 6 chute mounting plates, and each chute mounting plate is equipped with a chute. As a specific structure of the chute, the chute of this embodiment includes a front chute 11. A front hook chute 12 is installed at the end of the front chute 11. A middle chute 13 is installed at the end of the front hook chute 12. A rear hook chute 14 is installed at the end of the middle chute 13. A rear chute 15 is installed at the end of the rear hook chute 14. Hanging plates are installed on the front hook chute 12 and the rear hook chute 14. A hanging ear 16 is installed on the silo. A hanging chain 17 is installed between the hanging ear 16 and the hanging plate. A discharge pipe 21 is installed on the front hook chute 12 and the rear hook chute 14. An opening can be provided at the end of the rear chute 15 for discharging materials.

[0059] As another implementation of the chute, the chute of this embodiment includes a front chute 11, a front hook chute 12, a middle chute 13, and a rear chute 15. A hanging plate is installed on the front hook chute 12. A hanging ear 16 is installed on the silo. A hanging chain 17 is installed between the hanging ear 16 and the hanging plate. A discharge pipe 21 is installed on the middle chute 13. In this embodiment, a discharge control component 37 is installed on the middle chute 13. The discharge control component 37 of this embodiment includes a driving cylinder. The output shaft of the driving cylinder drives a rocker arm, which in turn drives a baffle in the discharge pipe 21 to move, thereby opening or closing the baffle and controlling the precise outflow of grains from the discharge pipe 21.

[0060] As Figure 3 , Figure 7 As shown in the figure, as another implementation of the chute, the chute of this embodiment includes a front chute 11, a front hook chute 12, a middle chute 13, and a rear chute 15. A hanging plate is installed on the front hook chute 12. A hanging ear 16 is installed on the silo. A hanging chain 17 is installed between the hanging ear 16 and the hanging plate. Specifically, a circular track is installed on the silo, and the circular track is arranged at the lower end of the silo top cover. A roller is installed on the hanging ear 16, and the roller is arranged within the circular track. The feed pipe is fixedly connected to the central pipe of the distributor. The central pipe of the distributor is rotatably fitted with the central slow-down section, enabling the central pipe of the distributor to rotate. The feed pipe is rotatably fitted with the silo top cover. As a specific implementation, the feed pipe adopts a pipe structure with a larger wall thickness, and the silo top cover adopts a frame-type reinforced structure and is equipped with a mechanical seal to achieve the purpose of rotation and sealing of the feed pipe. In this implementation, the upper air collecting box 8 is arranged upward, and a ventilation cylinder 32 is arranged on the central pipe of the distributor or a ventilation cylinder 32 is independently arranged outside the central pipe of the distributor, so that the ventilation pipe and the fumigation pipe are arranged above the chute, avoiding interference between the ventilation pipe, the fumigation pipe and the chute, and enabling the chute to rotate smoothly. As a corresponding mating structure, a fixed bracket 18 is installed on the silo top cover and is rotatably fitted with the silo top cover.

[0061] As a matching structure, in this embodiment, a lifting assembly 35 is installed on the central pipe of the distributor. The lifting assembly 35 drives the chute to move, so that the angle between the chute and the horizontal plane changes, thereby changing the discharging position of the grain.

[0062] As another matching structure, in this embodiment, a connecting structure is installed at the lower end of the feed pipe, and a lifting assembly 35 is installed on the connecting structure. The lifting assembly 35 drives the chute to move, so that the angle between the chute and the horizontal plane changes. Moreover, the lifting assembly 35 can rotate along with the feed pipe.

[0063] As the specific structure of the lifting assembly 35, the lifting assembly 35 is a driving cylinder structure. The end without a push rod of the driving cylinder is hinged and installed on the central pipe of the distributor or hinged and installed on the connecting structure at the lower end of the feed pipe. The end of the driving cylinder with a push rod is hinged and connected to the chute. For example, the connection position is located at the front chute 11, the front hook chute 12 or the middle chute 13.

[0064] This embodiment is equipped with a pneumatic gate 44. By opening the pneumatic gate 44, the grain enters the central slow-down section. By closing the pneumatic gate 44, the grain accumulates and overflows from the overflow distributor hopper 10. As an implementation scheme, the pneumatic gate 44 can be arranged above the conical cylinder 9.

[0065] As a matching structure, since the grain in this embodiment descends slowly and the feed pipe has been feeding grain, the grain accumulates above the central slow-down section and is likely to block the central pipe of the distributor. As Figure 8 shown, in this embodiment, a material dredging device 39 is installed at the upper end of the pneumatic gate 44. The material dredging device 39 in this embodiment includes an inverted conical hopper. The hopper is provided with holes, so that the inside of the hopper communicates with the silo. The lifting assembly 35 and the chute are arranged above the material dredging device 39. The material dredging device 39 prevents the grain from blocking above the silo, so that the grain can smoothly enter the central slow-down section. As a further implementation scheme, as Figure 9As shown in the figure, the material distributor 39 of this embodiment has an inverted conical hopper, which is surrounded by 6 triangular plates or 6 trapezoidal plates to form a regular hexagonal prism shape or a prism shape with edges. There are holes on the hopper, and a sealed chamber 47 is arranged on the outer periphery of the hopper. The sealed chamber 47 is hermetically connected to the surrounding structures to form a sealed space. An inclined air inlet pipe 45 is opened on the sealed chamber 47. The inclined air inlet pipe 45 is connected to structures such as the air inlet pipe and the ventilation pipe through a connecting pipe. At least one impact ball 46 is placed inside the sealed chamber 47. As a matching structure, an impact plate 48 is installed on the outer periphery of the hopper and fixed to the silo by bolts. Holes are opened at the same position of the impact plate 48. The air flow enters from the inclined air inlet pipe 45 and drives the impact ball 46 to move in a circular motion along one direction. Due to the existence of the edges, the impact ball 46 continuously collides with the impact plate 48, thereby causing the silo to vibrate slightly and avoiding the occurrence of material blocking phenomenon in the material distributor 39. The air flow will also be introduced into the hopper. The air flow that has been decelerated through the holes drives the grain in the hopper to move, but does not accelerate the movement of the grain excessively, enhancing the material distribution effect. In addition, a part of the dust will be carried in the grain. In this embodiment, air can be introduced through the inclined air inlet pipe 45 to reduce the settlement of dust at the bottom of the grain. When the material distributor 39 is not working, some dust will fall into the sealed chamber 47. In this embodiment, the pneumatic gate 44 can be closed and air can be introduced through the inclined air inlet pipe 45, so that the residual dust in the hopper flows out through structures such as the chute, while the dust in the sealed chamber 47 flows out through the dust cleaning port 49 opened on the sealed chamber 47. Usually, a blind plate is installed on the dust cleaning port 49, and the sealing gasket used for sealing is an ethylene propylene diene monomer (EPDM) sealing gasket. Compared with structures such as a rotary cylinder plus an eccentric wheel, the vibration amplitude of this embodiment of the present invention is larger and irregular, and the material distribution and other effects are better.

[0066] As a matching structure, relying solely on the lifting assembly 35 to drive the change in the discharging position of the grain is relatively small. Therefore, for a larger range of changes in the discharging position of the grain, the chute in this embodiment is deformable, that is, the length of the chute can change. In this embodiment, an elastic telescopic reset assembly 38 is installed between the middle chute 13 and the front hook chute 12. Specifically, the internal dimension of the middle chute 13 is slightly larger than the external dimension of the front hook chute 12, so that the middle chute 13 and the front hook chute 12 partially overlap. A U-shaped wing plate is installed on the outside of the middle chute 13, and a U-shaped wing plate is also welded at the end of the front hook chute 12. A plurality of guide rods are installed between these two U-shaped wing plates. The guide rod is a smooth rod, and the guide rod is inserted into the U-shaped wing plate with a clearance fit. Springs are installed between the two U-shaped wing plates, and the springs are arranged outside the guide rods. One end of the spring is fixedly connected to one U-shaped wing plate, and the other end of the spring is fixedly connected to the other U-shaped wing plate. In addition, in this embodiment, an elastic telescopic reset assembly 38 is installed between the middle chute 13 and the rear chute 15. Specifically, the internal dimension of the middle chute 13 is slightly larger than the external dimension of the rear chute 15, so that the middle chute 13 and the rear chute 15 partially overlap. A U-shaped wing plate is installed on the outside of the middle chute 13, and a U-shaped wing plate is also welded at the front end of the rear chute 15. A plurality of guide rods are installed between these two U-shaped wing plates. The guide rod is a smooth rod, and the guide rod is inserted into the U-shaped wing plate with a clearance fit. Springs are installed between the two U-shaped wing plates, and the springs are arranged outside the guide rods. One end of the spring is fixedly connected to one U-shaped wing plate, and the other end of the spring is fixedly connected to the other U-shaped wing plate. And a discharging control assembly 37 is installed at the end of the rear chute 15. In this embodiment, at least two discharging pipes 21 also need to be installed at the lower end of the middle chute 13, and a discharging control assembly 37 is installed on the discharging pipes 21.

[0067] After the grain in the silo is gradually filled and can no longer flow out from the grain outlet 24 of the central slow-down section, the grain accumulates in the silo at this time, and the top surface of the grain forms a cone. In this embodiment, it is necessary to close the grain dropping of the central slow-down section through the pneumatic gate 44, so that the grain gradually accumulates in the central pipe of the distributor. The grain is mainly distributed around along the chute. The discharge control assembly 37 on the rear chute 15 is closed, and the discharge control assembly 37 on the middle chute 13 is closed, so that the grain gradually accumulates at the rear chute 15. The weight of the grain in the rear chute 15 gradually increases, and the rear chute 15 and the middle chute 13 are gradually separated. The elastic telescopic reset assembly 38 between the rear chute 15 and the middle chute 13 unfolds. At the same time, as the rear chute 15 is filled with grain, the grain enters the middle chute 13. The weight of the grain in the rear chute 15 and the middle chute 13 increases, and the middle chute 13 and the front chute 11 are gradually separated. The elastic telescopic reset assembly 38 between the front hook chute 12 and the middle chute 13 contracts. After the front chute 11, the rear chute 15 and the middle chute 13 are separated, the discharge control assembly 37 on the middle chute 13 can be started, so that the grain in the middle chute 13 flows out from the chute. As the grain in the middle chute 13 flows out, the total weight of the grain in the rear chute 15 and the middle chute 13 gradually decreases, and the elastic telescopic reset assembly 38 between the middle chute 13 and the front hook chute 12 contracts. Similarly, as the discharge control assembly 37 on the middle chute 13 is fully opened, the discharge control assembly 37 on the rear chute 15 is opened, and the grain on the rear chute 15 flows out from the rear chute 15, so that the weight of the grain in the rear chute 15 decreases, and the elastic telescopic reset assembly 38 between the rear chute 15 and the middle chute 13 contracts. When the above elastic telescopic reset assembly 38 contracts or unfolds, the discharge position on the rear chute 15 and the middle chute 13 can be changed, so that the grain distribution is uniform. In this embodiment, it can also be combined with a rotating radial distributor. The radial distributor rotates, so that the discharge positions on the rear chute 15 and the middle chute 13 continuously change, making the grain distribution more uniform. In addition, in this embodiment, the angle of the chute is finely adjusted by the lifting assembly 35 to maximize the adjustment range of the grain discharge position, so that the grain is horizontally distributed at the top of the silo. This embodiment can avoid operations such as leveling the grain and can realize direct feeding of the grain.

[0068] As Figure 4 shown, the dotted line in the figure indicates the distribution of the grain in the granary. The grain flows out from the grain outlet 24 and forms a conical arrangement. The grain flows out from the chute and falls on the piled-up grain in a low-height manner.

[0069] In this embodiment, the discharge control components 37 on different chutes can be controlled to open, so that the weights of the grains on each chute are different and are arranged in a clockwise manner. The angles of different chutes are adjusted by the lifting assembly 35, so that the center of gravity of the radial distributor changes continuously. With an initial power existing in the radial distributor, the change of the center of gravity of the radial distributor provides power for the rotation of the radial distributor, enabling the radial distributor to rotate without power for a period of time.

[0070] As a specific grain feeding process, in this embodiment, the grain is conveyed to the feed pipe by a hoist or a screw conveyor, and the pneumatic gate 44 is opened. The grain enters the collecting hopper 19 along the feed pipe. Under the action of the collecting hopper 19, the original falling speed of the grain is reduced. The grain flowing out of the collecting hopper 19 enters the central pipe of the distributor, and the original falling speed of the grain is further reduced in the conical cylinder 9 in the central pipe of the distributor, and then enters the central slow-down section through the pneumatic gate 44. The grain first reaches the upper heat preservation section 7 and enters the material collecting bin 41 in the upper heat preservation section 7. A small part of the grain in the material collecting bin 41 flows out from the bottom end of the material collecting bin 41, and most of the grain flows out from the overflow short groove 42. Moreover, as the grain feeding amount increases to a stable level, part of the grain flows from the upper overflow port 43 to the overflow short groove 42, resulting in an increase in the weight of the grain on the overflow short groove 42. The change in the inclination angle of the overflow short groove 42 enables the grain to reach the forward buffer bin 29 in the upper heat preservation bin faster. Through the buffering effect of the orifice plate 30 on the forward buffer bin 29, the grain enters the reverse buffer bin 28 in the upper heat preservation section 7, causing the grain to flow along the inner wall of the reverse buffer bin 28, achieving the purpose of significantly reducing the speed after entering the central slow-down section. The grain enters the middle heat preservation section, the lower heat preservation section 5, the upper grain discharging section 4, the middle grain discharging section, the lower grain discharging section 2, and the bottom grain discharging section. In these sections, the grain with reduced speed first enters the central buffer 25 on the overflow buffer 22, so that the grain mainly flows out from the overflow long pipe 27 on the overflow buffer 22 and flows into the diversion buffer 23. In the diversion buffer 23, it flows along the inclined inner wall of the guiding buffer bin towards the orifice plate 30 of the forward buffer bin 29, causing the speed of the grain to decrease. The grain finally falls to the bottom grain discharging section and enters the storage bin along the grain discharging hole 24 on the bottom grain discharging section, forming a conical arrangement. As the grain in the bottom grain discharging section increases, the grain discharging through the grain discharging hole 24 on the bottom grain discharging section becomes slow until it stops discharging. The grain gradually accumulates in the lower grain discharging section 2 and flows out from the grain discharging hole 24 of the lower grain discharging section 2. The discharged grain falls on the previous conical grain and expands the stacking range of the grain until the grain discharging through the grain discharging hole 24 on the lower grain discharging section 2 becomes slow until it stops discharging. The grain gradually accumulates in the middle grain discharging section, and so on. The grain gradually piles up to the middle heat preservation section and flows out from the grain discharging hole 24 of the middle heat preservation section. Due to the influence of the internal structure of the central slow-down section, the grain moves in a motion posture similar to a small bounce in the central slow-down section and falls into the storage bin, achieving the purpose of preventing grain grading.

[0071] After the middle-end grain outlet stops discharging grain, the pneumatic gate 44 is closed. The grain gradually accumulates in the conical cylinder 9 and flows along the chute. The excess grain flows from the overflow port into the chute and out through the discharge pipe 21 of the chute. After storing a certain amount of grain in the silo, the grain feeding is stopped and the leveling operation is carried out. As a more excellent grain distribution scheme, in this embodiment, the discharge control assembly 37 controls the grain discharge in the chute. Relying on the weight of the grain and the elastic telescopic reset assembly 38, the overall length of the chute is extended or shortened, so that the position of the discharge pipe 21 changes, avoiding the formation of multiple small piles of grain in the silo, but distributing the grain in a flatter way. On this basis, in cooperation with the lifting assembly 35, the inclination angles and centers of gravity of the chutes at different positions are different, thus assisting the radial distributor to make a rotational movement. In order to better obtain the grain distribution data, in this embodiment, sensors are used to detect the height of the grain, and then data such as the height and length of the chutes at different positions are adjusted. This scheme can reduce or avoid the leveling operation.

[0072] After the grain distribution and grain storage are completed, air flow is input into the ventilation cylinder 32 through the air blower 20 to ensure that the temperature and humidity of the grain storage are appropriate. In addition, in this embodiment, the central air blower 34 and the circulation fumigation machine 33 can also be used to input the required fluid into the silo to achieve the corresponding effects.

[0073] It should be noted that in this embodiment, no electronic devices such as motors are used inside the grain in the silo, nor are there structures such as wires, to avoid open flames caused by short circuits or failures of electronic devices.

[0074] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0075] Although the specific implementation manners of the present application are described above in conjunction with the accompanying drawings, it is not a limitation to the protection scope of the present application. Those skilled in the art should understand that based on the technical solutions of the present application, various modifications or deformations that can be made without creative labor by those skilled in the art are still within the protection scope of the present application.

Claims

1. A grain cloth-feeding device with a central slow-drop section, which is arranged in a silo and is characterized in that it includes a central slow-drop section, a ventilation cylinder is arranged on the outer periphery of the central slow-drop section, a cloth-feeding device central pipe is arranged above the central slow-drop section, a feed pipe is arranged above the cloth-feeding device central pipe, a radial cloth-feeding device is arranged on the outer periphery of the cloth-feeding device central pipe, and a number of inclined chutes are arranged on the radial cloth-feeding device; a grain outlet hole is arranged on the central slow-drop section, an overflow buffer and a diversion buffer are arranged inside the central slow-drop section, and the overflow buffer is arranged above the diversion buffer.

2. The grain cloth-feeding device with a central slow-drop section according to claim 1, wherein: the central slow-drop section includes a grain outlet section and a heat preservation section arranged at the upper end of the grain outlet section. The grain outlet section includes four sections: a bottom grain outlet section, a lower grain outlet section, a middle grain outlet section, and an upper grain outlet section. The heat preservation section includes three sections: a lower heat preservation section, a middle heat preservation section, and an upper heat preservation section. At least one overflow buffer and at least one diversion buffer are arranged in the lower grain outlet section, the middle grain outlet section, the upper grain outlet section, the lower heat preservation section, and the middle heat preservation section. Grain outlet holes are arranged on the lower grain outlet section, the middle grain outlet section, the upper grain outlet section, and the middle heat preservation section, and the grain outlet holes are arranged above the overflow buffer; a grain outlet hole is arranged on the bottom grain outlet section.

3. The grain cloth-feeding device with a central slow-drop section according to claim 1 or 2, wherein: the overflow buffer includes a central buffer, the central buffer is in a bucket shape, an overflow pipe is arranged on the outer periphery of the central buffer, and the overflow pipe communicates with the internal space of the central buffer.

4. The grain cloth-feeding device with a central slow-drop section according to claim 1 or 2, wherein: the diversion buffer includes a forward buffer bin and a reverse buffer bin. The forward buffer bin is in an inverted bucket shape, the reverse buffer bin is in a bucket shape, the reverse buffer bin is arranged at the upper end of the forward buffer bin and the lower end of the reverse buffer bin is inserted into the upper end of the forward buffer bin, and the side wall of the forward buffer bin is a perforated plate.

5. The grain cloth-feeding device with a central slow-drop section according to claim 1, wherein: the cloth-feeding device central pipe includes an overflow cloth-feeding hopper, the inner diameter of the overflow cloth-feeding hopper is larger than the inner diameter of the feed pipe, a cone is arranged below the overflow cloth-feeding hopper, and the cone is arranged at the upper end of the central slow-drop section; a chute mounting plate is arranged on the outer periphery of the overflow cloth-feeding hopper, the chutes of the radial cloth-feeding device are arranged on the chute mounting plate, and overflow holes are arranged on the outer periphery of the overflow cloth-feeding hopper, and the overflow holes are arranged above the chute mounting plate.

6. The grain cloth-feeding device with a central slow-drop section according to claim 1 or 5, wherein: the chute includes a front chute connected to the cloth-feeding device central pipe, a front hook chute is arranged at the end of the front chute, an intermediate chute is arranged at the end of the front hook chute, a rear chute is arranged at the end of the intermediate chute, and discharge pipes are arranged on the front chute, the intermediate chute and the rear chute, and discharge control components are arranged on the discharge pipes.

7. The grain cloth-feeding device with a central slow-drop section according to claim 6, wherein: A lifting assembly is provided on the central pipe of the distributor, and the end of the lifting assembly is connected to the chute.

8. The grain distributing device with a central slow-down section according to claim 7, wherein: The central pipe of the distributor is rotatably connected to the feed pipe, or the feed pipe is rotatably fitted with the silo, and elastic telescopic reset components are provided between the front chute, the rear chute and the middle chute.

9. The grain distributing device with a central slow-down section according to claim 7, wherein: A material dredging device is provided below the central pipe of the distributor, and a pneumatic gate is provided at the lower end of the material dredging device.

10. The grain distributing device with a central slow-down section according to claim 1 or 9, wherein: An upper air collecting box is provided at the upper end of the central slow-down section, a lower air collecting box is provided at the lower end of the central slow-down section, and the upper air collecting box and the lower air collecting box are communicated with the ventilation cylinder; The upper air collecting box is connected to an air inlet fan through an air inlet pipe, or the upper air collecting box is connected to a central air ventilator through a ventilation pipe, and the upper air collecting box is connected to a circulation fumigation machine through a fumigation pipe.

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