A system for the loading and unloading of grain in bulk silos

Abstract

A system for loading and unloading grain in the upper-level storage rooms of a bulk grain storage building includes multiple common chutes for loading and / or unloading grain into the storage building and several loading devices for loading bulk grain onto trucks. Multiple grain feeders and multiple grain dischargers are connected to the common chutes. The grain feeders are correspondingly located at the upper part of each floor of the storage room, and the grain dischargers are correspondingly located at the bottom of each floor of the storage room. Each storage room in the building has several grain feeders, and each upper-level storage room has several grain dischargers. The loading device includes a grain discharge conveying mechanism located above the storage room on each floor and a movable loading gantry located outside the storage building. The movable loading gantry is equipped with a conveying drive mechanism for driving the grain discharge conveying mechanism. The grain discharge conveying mechanism is connected to the bottom end of the common chutes. The bulk grain in the storage building enters the common chutes and the grain discharge conveying mechanism sequentially through the grain dischargers and moves to the outside of the storage building. This invention reduces the amount of manual labor required for grain loading and unloading in the upper-floor granaries of multi-story warehouses, and improves the grain self-flow rate and efficiency of grain loading and unloading in the upper-floor granaries of multi-story warehouses.

Description

Technical Field

[0001] This invention relates to the field of grain handling technology in multi-story warehouses, specifically a system for handling grain in and out of the upper floors of bulk multi-story warehouses. Background Technology

[0002] Bulk storage buildings have advantages such as large storage capacity, small footprint, and strong applicability, and are a newly introduced storage type in my country's grain industry. Typically, each bulk storage building consists of 4-5 floors: each floor has 3-5 storage rooms, and each storage room has 2-3 rows of support columns 14. A chute is installed on the same side of the two rows of support columns 14 (see...). Figure 7 The top floor of the multi-story warehouse is the conveying equipment floor, and the lower floors are grain storage floors. A main conveyor is installed along the length of the top floor, and multiple branch conveyors are installed along the width. Each branch conveyor has multiple material discharge ports, and each discharge port is connected to multiple chutes 11. These chutes 11 extend to different floors of the multi-story warehouse for grain feeding between different floors. However, the large number of chutes passing through the floor slabs creates a risk of rain or air leakage, potentially reducing the airtightness of the warehouse. Figure 6 As shown, the lower three floors of the multi-story warehouse are used for grain storage. Unloading ports 13 are located outside the doors of the upper-level granaries 6 on the second and third floors, and these ports are connected to external chutes 12. When unloading grain from the upper-level granaries, unloading machinery or manual labor is required to push the loose grain into the unloading port 13, and then it flows by gravity through the external chutes 12 for loading onto trucks. In the existing technology, because multiple internal chutes 11 correspond to different floors, before grain is fed in, it is necessary to determine which gate to open for feeding grain into the internal chutes 11 based on the feeding requirements of different floors, leading to an increased workload. Furthermore, during the unloading process from the upper-level granaries 6, opening the grain-blocking door 9 and pushing the grain to the unloading port 13 is extremely labor-intensive and time-consuming, resulting in low unloading efficiency. Summary of the Invention

[0003] To address the problem of low efficiency in grain handling in existing multi-story warehouses, this invention provides a system for handling grain in the upper floors of bulk multi-story warehouses. This system improves the mechanization of grain handling, thereby increasing the efficiency of grain handling in the upper floors of multi-story warehouses and reducing the intensity of manual labor.

[0004] To achieve the above objectives, the specific solution adopted by the present invention is as follows: a system for loading and unloading grain in the upper-level storage rooms of a bulk warehouse, comprising multiple common chutes for loading and / or unloading grain into the warehouse and several loading devices for loading bulk grain onto trucks; the common chutes are connected to multiple grain feeders and multiple grain dischargers, with the grain feeders correspondingly located at the upper part of each storage room in the warehouse and the grain dischargers correspondingly located at the bottom of each upper-level storage room in the warehouse, and each upper-level storage room in the warehouse having several grain feeders and several grain dischargers; each grain feeder and grain discharger is equipped with several valve assemblies; the loading device includes a grain discharge conveying mechanism located in the storage room on the first floor and a mobile loading gantry located outside the warehouse, the mobile loading gantry being equipped with a conveying drive mechanism for driving the grain discharge conveying mechanism, the grain discharge conveying mechanism being connected to the bottom end of the common chutes, and the bulk grain in the upper-level storage rooms of the warehouse being moved to the outside of the warehouse through the grain dischargers sequentially into the common chutes and the grain discharge conveying mechanism.

[0005] To further optimize the system for loading and unloading grain in the upper-level storage room of a bulk warehouse according to the present invention: the grain feeder includes a grain feed branch pipe connected to a common chute, the grain feed branch pipe extending downward at an angle into the storage room.

[0006] To further optimize the system for loading and unloading grain in the upper-level storage room of a bulk warehouse according to the present invention: the grain dispenser includes a grain unloading funnel and a grain discharging pipe embedded in the bottom of the upper-level storage room, one end of the grain discharging pipe is connected to the small end of the grain unloading funnel, and the other end of the grain discharging pipe is connected to a common chute.

[0007] To further optimize the system for grain entry and exit in the upper-level storage room of a bulk warehouse according to the present invention: the valve assembly includes a flap that is rotatably connected to the grain inlet branch pipe or the grain outlet pipe and an electric push rod for driving the flap to rotate. During the rotation of the flap, the grain inlet branch pipe or the grain outlet pipe can be cut off.

[0008] To further optimize the system for loading and unloading grain in the upper-floor storage room of a bulk warehouse according to the present invention: the grain conveying mechanism includes a housing, on which multiple grain inlets and one grain outlet are provided. The grain inlets are located inside the storage room on the first floor and are connected to the bottom end of a common chute, while the grain outlet is located outside the storage room on the first floor.

[0009] To further optimize the system for loading and unloading grain in the upper part of a bulk warehouse, the grain conveying mechanism further includes a spiral conveying assembly disposed within the housing. The spiral conveying assembly includes a rotating shaft and spiral blades fixedly connected to the rotating shaft. During the rotation of the rotating shaft, the spiral blades convey the bulk grain to the grain outlet.

[0010] To further optimize the system for loading and unloading grain in the upper part of a bulk warehouse, the conveying drive mechanism includes a drive motor, the motor shaft of the drive motor is detachably connected to the rotating shaft, and the drive motor is fixedly connected to the mobile loading gantry.

[0011] To further optimize the system for loading and unloading grain in the upper part of a bulk warehouse, the mobile loading gantry is fixedly connected to a temporary grain storage hopper, which is located below the grain outlet.

[0012] To further optimize the system for loading and unloading grain in the upper part of a bulk storage warehouse of the present invention: a dust suppression hopper is fixedly connected below the temporary storage hopper, and the bulk grain in the temporary storage hopper enters the grain transport vehicle after passing through the dust suppression hopper.

[0013] To further optimize the system for loading and unloading grain in the upper part of a bulk warehouse, the mobile loading gantry includes a support frame and support legs disposed below the support frame. The support legs are fixedly connected to the support frame, and the conveying drive mechanism is fixedly connected to the support frame. The support legs are telescopic support rods, which can drive the conveying drive mechanism to rise or fall during the extension and retraction of the support legs.

[0014] Beneficial effects:

[0015] 1. This invention provides a system for loading and unloading grain in the upper-level storage rooms of a bulk warehouse. It integrates multiple chutes at each grain discharge point into a single common chute. Each common chute consists of multiple ordinary sections, a grain feeder, and a grain discharger. The grain feeder is located at the top of each storage room, and the grain discharger is located at the bottom of the upper-level storage room. When grain is loaded into the storage room, the corresponding grain feeder is opened, reducing the workload of loading. When grain is discharged from the upper-level storage room, the corresponding grain discharger is opened, allowing most of the bulk grain in the storage room to flow by gravity into the common chute, greatly reducing the workload of pushing the grain to the unloading point and improving the efficiency of loading and unloading grain in the upper-level storage rooms of the bulk warehouse.

[0016] 2. In this invention, the bottom end of the common chute is connected to the grain conveying mechanism. The bulk grain in the upper-floor granary enters the common chute and the grain conveying mechanism in sequence through the grain discharger and moves to the outside of the building warehouse. The entire building warehouse only needs to set up a grain conveying mechanism under each row of common chutes in the first-floor granary, which reduces the cost of equipment.

[0017] 3. In this invention, the portion of the common chute extending into the first-floor warehouse is equipped with several grain feeders for feeding grain into the first-floor warehouse.

[0018] 4. In this invention, the grain discharging conveying mechanism and the conveying drive mechanism are detachably configured, and one conveying drive mechanism can be connected to multiple grain discharging conveying mechanisms, thereby reducing the cost of the equipment;

[0019] 5. In this invention, when changing grain transport vehicles, the bulk grain in the granary enters the temporary storage hopper, eliminating the need to repeatedly open and close the drive motor, thus improving the efficiency of loading bulk grain.

[0020] 6. In this invention, the support leg is a telescopic support rod, which can adjust the height of the drive motor to connect with grain conveying mechanisms of different heights, and the conveying drive mechanism has a wide range of applications. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure where the grain feeder is closed and the grain discharger is open;

[0023] Figure 3 This is a schematic diagram of the open structure of the grain feeder;

[0024] Figure 4 This is a schematic diagram of the grain dispenser when it is closed;

[0025] Figure 5 This is a structural schematic diagram of the loading device;

[0026] Figure 6 This is a schematic diagram of the chute layout in the bulk grain storage room of the original technology;

[0027] Figure 7 This is a floor plan of the two-story barn in this invention.

[0028] Attached diagram descriptions: 1. Conveying equipment layer; 2. Shared chute; 3. Grain feeder; 301. Grain feed section; 302. Grain feed connection flange; 303. Observation hole; 304. Inclined baffle; 305. Grain feed branch pipe; 4. Second floor roof slab; 5. Grain discharger; 501. Grain unloading funnel; 502. Grain discharge connection flange; 503. Vertical pipe; 504. Grain discharge inclined pipe; 506. Grain discharge section; 507. Grain discharge connection flange; 6. Storage room; 7. Grain inlet; 8. Loading device; 801. Grain inlet hole; 802. Fixed hanger; 803. Spiral blade; 804. Grain discharge. 805. Drive motor, 806. Support frame, 807. Temporary grain storage hopper, 808. Dust suppression hopper, 809. Support leg, 810. Caster wheel, 811. Housing, 812. Rotating shaft, 9. Grain gate, 10. Valve assembly, 1001. Ordinary section, 1002. Fixing frame, 1003. Electric push rod, 1004. Long hole, 1005. Hinge seat, 1006. Rubber pad, 1007. Flip plate, 1008. Sealing frame, 1009. Rotating shaft, 11. Inner chute, 12. Outer chute, 13. Grain unloading port, 14. Support column. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be described in detail and completely below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Example 1

[0031] This embodiment of the bulk grain storage building consists of four floors. The top floor is the conveying equipment floor 1, used to house the grain conveying equipment. The lower three floors are used for grain storage. Each floor has multiple independent storage rooms, with the upper and lower floors corresponding to each other. The storage rooms on the second and third floors are referred to as the upper storage rooms 6. Figure 1 As shown, Figure 1 This is a schematic diagram of a three-story grain storage building. The grain inlet and outlet system includes multiple shared chutes 2 for grain inlet and / or outlet and several loading devices 8 for loading bulk grain onto trucks, such as... Figure 1 As shown, a common chute 2 is embedded in the multi-story warehouse, passing through the third and second floors and extending into the first floor. The top end of the common chute 2 is a grain inlet 7 that can connect with the equipment on the top floor of the warehouse. A discharge port is provided under the conveying equipment in the top floor of the warehouse, and the grain inlet 7 is connected to the discharge port. The bottom end of the common chute 2 extends into the first floor of the warehouse and connects with the loading device 8.

[0032] Each storage silo typically has two rows of shared chutes 2, with 3 to 7 chutes per row. These chutes penetrate the second and third floors of the multi-story warehouse and extend into the first floor. Each row of shared chutes 2 is located on the same side as the support column 14 inside the warehouse. Grain feeders 3 are correspondingly located at the top of each floor's storage silo 6, through which bulk grain enters the storage silo 6. Grain dischargers 5 are correspondingly located at the bottom of each floor's upper storage silo 6. Both the grain feeders 3 and the grain dischargers 5 are equipped with several valve assemblies 10. In this embodiment, each shared chute 2 has three grain feeders 3 and two grain dischargers 5. The three grain feeders 3 extend into the storage silos on the first, second, and third floors of the multi-story warehouse, respectively. The two grain dischargers 5 are used at the bottom of the second and third floor storage silos, respectively, for discharging grain from the second and third floor storage silos. Taking the grain inlet of a two-story warehouse as an example, the grain inlet 3 in the two-story warehouse is located below the top plate 4 of the second floor, and the grain outlet 5 in the two-story warehouse is located at the bottom of the two-story warehouse. All grain inlets 3 in the two-story warehouse are in the open state, while the grain inlets 3 in the first and third-story warehouses are in the closed state, and all grain outlets 5 are in the closed state. When discharging grain from the two-story warehouse, the grain outlets 5 at the bottom of the two-story warehouse are in the open state, the grain outlets 5 at the bottom of the third-story warehouse are in the closed state, and all grain inlets 3 are in the closed state.

[0033] The feeder 3 includes a feed branch pipe 305 connected to the common chute 2, which extends downwards into the upstairs granary 6. The feed branch pipe 305 is a square pipe, with one end connected to the common chute 2 and the other end extending into the upstairs granary 6. The feed branch pipe 305 is located on one side of the common chute 2. A valve assembly 10 is installed on the feed branch pipe 305. The valve assembly 10 includes a flap 1007 rotatably connected to the feed branch pipe 305 and an electric push rod 1003 for driving the flap 1007 to rotate. During the rotation of the flap 1007, the feed branch pipe 305 can be cut off.

[0034] like Figure 3 As shown, valve assembly 10 is located at the connection between feed branch pipe 305 and common chute 2. Flip plate 1007 is connected to feed branch pipe 305 via a rotating unit. The rotating unit includes a rotating shaft 1009, which is fixedly connected to the lower part of the connection point between feed branch pipe 305 and common chute 2. Rotating the flip plate 1007 connected to the rotating shaft 1009 causes it to press tightly against the sealing frame 1008 at the upper end of feed branch pipe 305, achieving a seal between feed branch pipe 305 and common chute 2. A hinge seat 1005 is fixed at the center of flip plate 1007, and the telescopic rod of electric push rod 1003 is connected to flip plate 1007 via hinge seat 1005. A fixing frame 1002 is installed on the outside of feed branch pipe 305, and the fixing frame 1002 is connected to the base of electric push rod 1003 via a hinge. In this embodiment, the electric push rod 1003 is located outside the feed branch pipe 305, and the flap 1007 is located inside the feed branch pipe 305. The extension or retraction of the electric push rod 1003 drives the flap 1007 to rotate. An elongated hole 1004 is provided on the upper surface of the feed branch pipe 305, allowing the extension rod to move within the elongated hole 1004, thus adjusting the connection angle between the extension rod and the flap 1007. When feed is introduced into the upstairs granary 6, the electric push rod 1003 pushes the flap 1007 to rotate until the flap 1007 cuts off the common chute 2, so that the loose grain can only flow into the upstairs granary 6 along the feed branch pipe 305. At this time, the impact force of the loose grain flowing down from the height on the flap 1007 is relatively large. Several inclined baffles 304 are fixed on the inner wall of the common chute 2 to support the flap 1007. In this embodiment, there are two inclined baffles 304. The support of the inclined baffle 304 can effectively improve the ability of the flap 1007 to withstand the impact of grain flow and prevent damage to the flap 1007.

[0035] The grain dispensing device 5 includes a grain unloading funnel 501 and a grain dispensing pipe embedded in the bottom of the upper-level granary 6. One end of the grain dispensing pipe is connected to the small end of the grain unloading funnel 501, and the other end of the grain dispensing pipe is connected to the common chute 2. The grain unloading funnel 501 is embedded in the bottom plate 4 of the upper-level granary 6. The grain dispensing pipe includes a vertical pipe 503 and a grain dispensing inclined pipe 504 that are connected to each other. The vertical pipe 503 and the grain dispensing inclined pipe 504 are integrally connected. The vertical pipe 503 is connected to the small end of the grain unloading funnel 501 through a grain unloading connecting flange, and the grain dispensing inclined pipe 504 is connected to the common chute 2. Several valve assemblies 10 are installed on the grain discharge pipe. In this embodiment, there are two valve assemblies 10, which are respectively installed on the vertical pipe 503 and the grain discharge inclined pipe 504, and are used to cut off the vertical pipe 503 and the grain discharge inclined pipe 504. Two flaps 1007 are rotatably connected to the vertical pipe 503 and the grain discharge inclined pipe 504, respectively. Two fixing brackets 1002 are fixedly connected to the vertical pipe 503 and the grain discharge inclined pipe 504, respectively. Correspondingly, the side of the vertical pipe 503 and the top surface of the grain discharge inclined pipe 504 are provided with elongated holes 1004 for the telescopic rod to move. When storing bulk grain, the vertical pipe 503 and the grain discharge inclined pipe 504 are in the cut-off state to ensure good airtightness between this storage room and the upper storage room or the shared chute 2 room. When grain is discharged from the upstairs granary 6, the electric push rod 1003 pulls the flap 1007 to rotate, which connects the unloading hopper 501, vertical pipe 503, grain discharge inclined pipe 504 and common chute 2. Most of the loose grain in the upstairs granary 6 flows into the common chute 2 by gravity, and the remaining loose grain is then pushed into the nearest unloading hopper 501 by machinery or manpower, which greatly reduces the heavy workload of pushing all the grain in the upstairs granary 6 to the unloading outlets outside the two side warehouse doors.

[0036] In this embodiment, as Figure 3 and Figure 4 As shown, the valve assembly 10 also includes a gasket 1006. The gasket 1006 of the valve assembly 10 on the feed branch pipe 305 is fixedly connected to the inside of the sealing frame 1008 at the connection between the feed branch pipe 305 and the common chute 2. The gasket 1006 of the valve assembly 10 on the vertical pipe 503 is pasted to the lower side of the upper port of the vertical pipe 503. The gasket 1006 of the valve assembly 10 on the discharge inclined pipe 504 is pasted to the bottom of the flap 1007. When the flap 1007 cuts off the feed branch pipe 305, the vertical pipe 503, or the discharge inclined pipe 504, the gasket 1006 fills the gap between the sealing frame 1008 and the flap 1007, so that the upper storage room 6 has good sealing performance and meets the airtightness requirements for the implementation of grain storage technologies such as controlled atmosphere storage and fumigation.

[0037] In this embodiment, as Figure 1As shown, a grain discharge device 5 is installed at the bottom inside the grain gate 9 of the upstairs granary 6. When the grain discharge device 5 at the grain gate 9 is opened, the loose grain behind the gate that is blocking the opening of the grain gate 9 can flow out of the granary by gravity, making the grain gate 9 very easy to open, and allowing workers and machinery to enter the granary more quickly, shortening the opening time of the grain gate 9 and further improving the efficiency of loose grain discharge.

[0038] The loading device 8 includes a grain conveying mechanism located in the upper part of the first floor of the multi-story warehouse and a movable loading gantry located outside the warehouse. The movable loading gantry is equipped with a conveying drive mechanism for driving the grain conveying mechanism. The grain conveying mechanism is connected to the bottom end of the common chute 2. Bulk grain in the upper-floor granary 6 enters the common chute 2 and the grain conveying mechanism sequentially through the grain dispenser 5 and moves to the outside of the multi-story warehouse. In this embodiment, bulk grain in the second and third-floor granaries of the multi-story warehouse flows through the grain dispenser 5 and the common chute 2 to the grain conveying mechanism located in the upper part of the first-floor granary. Figure 1 As shown, each row of shared chutes 2 has two fixed grain conveying mechanisms below it, one on each side of the multi-story warehouse. Typically, each upper-floor storage room 6 has two rows of shared chutes 2, resulting in four grain conveying mechanisms. The conveying drive mechanism is fixed to a mobile loading gantry outside the warehouse. There are two mobile loading gantry and two conveying drive mechanisms, one on each side of the multi-story warehouse. The two mobile loading gantry can alternately handle the grain dispensing from multiple grain conveying mechanisms on both sides of the multi-story warehouse, significantly reducing investment in conveying equipment.

[0039] The grain conveying mechanism includes a housing 811, on which multiple grain inlets 801 and one grain outlet 804 are provided. The grain inlets 801 are located on the upper surface of the housing 811 inside the first-floor warehouse and are connected to the bottom end of the common chute 2. The grain outlet 804 is located outside the first-floor warehouse. Figure 5 As shown, in this embodiment, the housing 811 is semi-cylindrical and consists of two parts: a grain inlet 801 is located on the front half of the housing 811, and a grain outlet 804 is located on the rear half of the housing 811. The two parts are connected by a conveying flange. The grain conveying mechanism also includes a screw conveying assembly disposed within the housing 811. The screw conveying assembly includes a rotating shaft 812 and screw blades 803 fixedly connected to the rotating shaft 812. During the rotation of the rotating shaft 812, the screw blades 803 convey the bulk grain to the grain outlet 804. The grain conveying mechanism is suspended below the top plate of the first-floor granary by multiple fixed hangers 802.

[0040] The conveying drive mechanism includes a drive motor 805, whose motor shaft is detachably connected to a rotating shaft 812. The drive motor 805 is fixedly connected to a mobile loading gantry. When grain in an upper-floor granary 6 needs to be unloaded, the mobile loading gantry is simply moved to the outside of the granary where the grain needs to be unloaded, and the drive motor 805 on the mobile loading gantry is connected to the grain unloading conveying mechanism of the granary. After starting the conveying equipment, the grain discharged from the upper-floor granary 6 through the common chute 2 can be loaded onto trucks and transported away, completing the unloading operation of the upper-floor granary 6.

[0041] A temporary grain storage hopper 807 is fixedly connected to the mobile loading gantry, and is located below the grain outlet 804. After flowing out of the grain outlet 804, the bulk grain first enters the temporary grain storage hopper 807, which is equipped with a valve capable of shutting off the flow. When loading grain into a truck, the truck is first parked under the mobile loading gantry for loading. When a truck is full and needs to be replaced, there is no need to turn off the drive motor 805; simply close the valve on the temporary grain storage hopper 807 to shut off the flow, temporarily storing the bulk grain inside, thus improving the loading efficiency of bulk grain.

[0042] A dust suppression hopper 808 is fixedly connected to the bottom of the temporary grain storage hopper 807. The bulk grain in the temporary grain storage hopper 807 enters the grain transport vehicle after passing through the dust suppression hopper 808. The dust suppression hopper 808 is fixedly connected to the small end of the temporary grain storage hopper 807 and is connected to the temporary grain storage hopper 80711. The dust suppression hopper 808 can reduce the phenomenon of dust flying during loading.

[0043] The mobile loading gantry includes a support frame 806 and multiple support legs 809 positioned below the support frame 806. The support legs 809 are fixedly connected to the support frame 806. The conveying drive mechanism and the temporary grain storage hopper 807 are also fixedly connected to the support frame 806. In this embodiment, there are four support legs 809; they are located below the support frame 806 and fixedly connected to its four corners. A drive motor 805 is fixedly connected to the support frame 806. The larger end of the temporary grain storage hopper 807 is fixed to the support frame 806. Casters 810 are provided on the support legs 809, and locking plates are provided on the casters 810 for locking them. When the mobile loading gantry moves to the desired position, the locking plates are rotated to lock the casters 810, preventing the mobile loading gantry from moving during operation. The support leg 809 of the mobile loading gantry is a telescopic support rod. During the extension and retraction of the support leg 809, it can drive the drive motor 805 and the temporary grain storage hopper 807 to rise or fall. Adjusting the height of the mobile loading gantry serves two purposes: first, by adjusting the height of the support leg 809, the drive motor 805 can be smoothly connected to the grain conveying mechanism, making operation simpler; second, lowering the height of the mobile loading gantry lowers its center of gravity, thus making the movement of the mobile loading gantry safer.

[0044] In this embodiment, a grain feeder (3) is provided in the part of the common chute 2 that extends into the first-floor granary for feeding grain into the first-floor granary. The grain discharge from the first-floor granary is similar to the grain discharge from the flat warehouse.

[0045] Example 2

[0046] This embodiment is an improvement on embodiment 1. Its main structure is the same as that of embodiment 1, but the improvement lies in: [The following is a more detailed description of the improvement.] Figure 3 As shown, the feeder 3 also includes a feed section 301, and a feed branch pipe 305 is connected to the feed section 301 and integrally connected to the feed section 301. Figure 4 As shown, the grain dispenser 5 also includes a grain dispensing section 505, and a grain dispensing inclined pipe 504 connected to the grain dispensing section 506, with the inclined pipe 504 and the grain dispensing section 506 integrally connected. That is, the common chute 2 is formed by splicing multiple grain inlet sections 301, multiple grain dispensing sections 506, and multiple ordinary sections 1001 into a straight pipe. The grain inlet sections 301 and 506 are square pipes, while the ordinary section 1001 is a round pipe. The two ends of the grain inlet section 301 are connected to the ordinary section 1001 via a grain inlet connecting flange 302 through a reducing diameter, and the two ends of the grain dispensing section 506 are connected to the ordinary section 1001 via a grain dispensing connecting flange 502 through a reducing diameter. The arrangement of the grain inlet sections 301 and 506 facilitates the installation and replacement of the grain dispenser 3 and the grain dispenser 5. Correspondingly, the grain inlet section 301 is provided with an observation hole 303, and the inclined baffle 304 is fixed to the inner wall of the grain inlet section 301.

[0047] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A system for loading and unloading grain in the upper-level storage room of a bulk warehouse, characterized in that: Includes multiple shared chutes (2) for grain inlet and / or outlet in multi-story warehouses and several loading devices (8) for loading bulk grain onto trucks. The common chute (2) is connected to multiple feeders (3) and multiple dischargers (5). The feeders (3) are correspondingly set at the upper part of the multi-story warehouse (6), and the dischargers (5) are correspondingly set at the bottom of the multi-story warehouse (6). Each multi-story warehouse (6) is equipped with several feeders (3) and several dischargers (5). The feeder (3) includes a feed branch pipe (305) connected to the common chute (2), the feed branch pipe (305) extending downward into the granary (6); the feeder (3) also includes a feed section (301), the feed branch pipe (305) being connected to the feed section (301); The grain dispenser (5) includes a grain unloading funnel (501) and a grain discharging pipe embedded in the bottom of the upper-floor granary (6). One end of the grain discharging pipe is connected to the small end of the grain unloading funnel (501), and the other end of the grain discharging pipe is connected to the common chute (2). The grain unloading funnel (501) is embedded in the bottom plate of the upper-floor granary (6). The grain discharging pipe includes a vertical pipe (503) and a grain discharging inclined pipe (504) that are connected to each other. The vertical pipe (503) is connected to the small end of the grain unloading funnel (501). The grain dispenser (5) also includes a grain discharging section (506), and the grain discharging inclined pipe (504) is connected to the grain discharging section (506). The common chute (2) is formed by splicing multiple grain inlet sections (301), multiple grain outlet sections (301), and multiple ordinary sections (1001) into a straight pipe. Both the feeder (3) and the discharger (5) are equipped with several valve assemblies (10); each valve assembly (10) includes a flap (1007) rotatably connected to the feed branch pipe (305) or the discharge pipe and an electric push rod (1003) for driving the flap (1007) to rotate. During the rotation of the flap (1007), the feed branch pipe (305) or the discharge pipe can be cut off. When grain is fed into the upstairs granary (6), the electric push rod (1003) pushes the flap (1007) to rotate until the flap (1007) cuts off the common chute (2), so that the loose grain can only flow into the upstairs granary (6) along the grain feed branch pipe (305). Several inclined bars (304) for supporting the flap (1007) are fixed on the inner wall of the common chute (2). The loading device (8) includes a grain conveying mechanism installed in the warehouse room of the first floor and a mobile loading gantry installed outside the warehouse. The mobile loading gantry is equipped with a conveying drive mechanism for driving the grain conveying mechanism. The grain conveying mechanism is connected to the bottom end of the common chute (2). The bulk grain in the warehouse room (6) on the upper floor of the warehouse enters the common chute (2) and the grain conveying mechanism in sequence through the grain dispenser (5) and moves to the outside of the warehouse. The grain conveying mechanism includes a housing (811), on which a plurality of grain inlets (801) and a grain outlet (804) are provided. The grain inlets (801) are located inside the warehouse on the first floor and are connected to the bottom end of the common chute (2). The grain outlet (804) is located outside the warehouse on the first floor. The mobile loading gantry includes a support frame (806) and a support leg (809) disposed below the support frame (806). The support leg (809) is fixedly connected to the support frame (806), and the conveying drive mechanism is fixedly connected to the support frame (806). The support leg (809) is a telescopic support rod, and the extension and retraction of the support leg (809) can drive the conveying drive mechanism to rise or fall. The grain conveying mechanism also includes a spiral conveying assembly disposed in the housing (811). The spiral conveying assembly includes a rotating shaft (812) and spiral blades (803) fixedly connected to the rotating shaft (812). During the rotation of the rotating shaft (812), the spiral blades (803) convey the loose grain to the grain outlet (804).

2. The system for loading and unloading grain in the upper-level storage room of a bulk warehouse as described in claim 1, characterized in that: The conveying drive mechanism includes a drive motor (805), the motor shaft of the drive motor (805) is detachably connected to the rotating shaft (812), and the drive motor (805) is fixedly connected to the mobile loading gantry.

3. The system for loading and unloading grain in the upper-level storage room of a bulk warehouse as described in claim 1, characterized in that: A temporary grain storage hopper (807) is fixedly connected to the mobile loading gantry, and the temporary grain storage hopper (807) is located below the grain outlet (804).

4. A system for loading and unloading grain in the upper-level storage room of a bulk warehouse as described in claim 3, characterized in that: A dust suppression hopper (808) is fixedly connected below the temporary grain storage hopper (807). The loose grain in the temporary grain storage hopper (807) enters the grain transport vehicle after passing through the dust suppression hopper (808).

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