Multi-stage grain drying device

Abstract

The utility model provides a multi-stage grain drying device, which relates to the technical field of grain multi-stage drying and comprises a box body, a main mesh belt conveying part, a receiving section, a lifting section, a feeding section, a mounting groove, a feeding hopper, a distributing hopper, a spreading plate, a sub mesh belt conveying part, a discharge port, a dehumidifying pipeline and a hot air pipeline, according to the device, the main mesh belt conveying part and the sub mesh belt conveying parts can be stacked, so that the occupied area of the drying device can be reduced, the mounting convenience is improved, popularization and use are facilitated, grains can be effectively prevented from falling to the bottom of the box body through the main mesh belt conveying part and the sub mesh belt conveying parts with different widths, and the grain drying efficiency is improved. Therefore, grains can be stably dried on the main mesh belt conveying part and the sub mesh belt conveying parts, loss of the grains is reduced, the thickness of the grains on the main mesh belt conveying part and the sub mesh belt conveying parts can be controlled according to the moisture content of the grains, and a good drying effect on the grains is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of multi-stage grain drying, in particular to a multi-stage grain drying device. Background Art

[0002] Before grain is stored in warehouses, it needs to be dried. The common drying method is to expose it to the sun. This method has relatively low cost, but takes a long time and is greatly affected by the site and weather. In order to be able to store grain stably, corresponding grain drying equipment can be used. This has less impact on the site and weather, takes a short time, but is relatively expensive. The drying device uses the high-temperature airflow generated to remove moisture from the surface and inside of the grain and processes the grain into a dry state. The overall specifications of the existing multi-stage drying equipment are large, the site area is large, there are high requirements for the installation location, and there are great restrictions on promotion. Utility Model Content

[0003] The purpose of the utility model is to provide a multi-stage grain drying device, aiming to solve the problems mentioned in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: the multi-stage grain drying device comprises a box body, a main mesh belt conveyor is arranged inside the box body, the main mesh belt conveyor comprises a material receiving section, a lifting section and a feeding section, an installation groove is provided on the outer surface of the box body and above the material receiving section, a feeding hopper is provided at the upper end of the installation groove, a plurality of sub-feeding hoppers are provided at the bottom of the feeding hopper, a material laying plate is provided inside the box body and on one side of the sub-feeding hopper, a plurality of sub-mesh belt conveyors are arranged at intervals inside the box body and below the main mesh belt conveyor, and the movement direction of the sub-mesh belt conveyor closest to the main mesh belt conveyor is opposite to the movement direction of the main mesh belt conveyor. The moving directions of two adjacent sub-net belt conveyor parts are opposite, and the main net belt conveyor part and the sub-net belt conveyor part both have a starting end and a tail end. The starting end of the sub-net belt conveyor part located at the top is used to receive the grain put by the tail end of the main net belt conveyor part, and the starting end of each sub-net belt conveyor part is used to receive the grain put by the tail end of the previous sub-net belt conveyor part. A discharge port is provided on the outer surface of the box body, and the tail end of the sub-net belt conveyor part located at the bottom is located in the discharge port. The widths of the main net belt conveyor part and the sub-net belt conveyor part decrease successively from top to bottom. A dehumidification pipe connected to the box body is provided at the upper end of the box body, and a hot air duct is provided at the lower end of the inner part of the box body.

[0005] Preferably, guide rods are symmetrically arranged on the upper surface of the laying board, through holes slidably connected to the guide rods are arranged on the upper surface of the box body, the upper ends of the two guide rods are connected by a fixed plate, a base is arranged on the upper surface of the box body, a screw rod is rotatably connected to the base, and the screw rod is threadedly connected to the fixed plate.

[0006] Preferably, a vertical plate is provided on one side of the material laying plate close to the material distribution hopper.

[0007] Preferably, a baffle is arranged inside the box body and above the starting end of the sub-net belt conveying part, and the baffle is arranged obliquely.

[0008] Preferably, a plurality of diversion pipes are evenly arranged on the hot air pipe, and the openings of the diversion pipes are arranged upward.

[0009] The beneficial effects of the utility model are:

[0010] The device can stack the main mesh belt conveyor part and the sub-mesh belt conveyor part, thereby reducing the floor space of the drying device, improving the convenience of installation, and facilitating popularization and use. In addition, the main mesh belt conveyor part and the sub-mesh belt conveyor part with different widths can effectively prevent the grain from falling to the bottom of the box, so that the grain can be stably dried on the main mesh belt conveyor part and the sub-mesh belt conveyor part, reducing the loss of the grain. In addition, the thickness of the grain on the main mesh belt conveyor part and the sub-mesh belt conveyor part can be controlled according to the moisture content of the grain, thereby ensuring a good drying effect on the grain. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of a specific embodiment of the utility model.

[0012] Figure 2 yes Figure 1 A partial enlarged view of point A in the middle.

[0013] Figure 3 It is a schematic diagram of the structure inside the box of a specific embodiment of the utility model.

[0014] Figure 4 yes Figure 3 A partial enlarged view of point B in the middle.

[0015] Figure 5 It is a structural schematic diagram of a feeding hopper and a distributing hopper in a specific embodiment of the utility model.

[0016] In the figure: 1. Box body; 2. Main mesh belt conveyor; 3. Material receiving section; 4. Lifting section; 5. Feeding section; 6. Feeding hopper; 7. Distribution hopper; 8. Material laying plate; 9. Distribution mesh belt conveyor; 10. Dehumidification duct; 11. Hot air duct; 12. Guide rod; 13. Fixed plate; 14. Base; 15. Screw rod; 16. Vertical plate; 17. Baffle; 18. Diversion duct; 19. Discharge port. DETAILED DESCRIPTION

[0017] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings.

[0018] like Figure 1-5 As shown, a multi-stage grain drying device comprises a box body 1, a main mesh belt conveyor 2 is arranged inside the box body 1, the main mesh belt conveyor 2 comprises a material receiving section 3, a lifting section 4 and a feeding section 5, an outer surface of the box body 1 and above the material receiving section 3 is provided with an installation groove, a feeding hopper 6 is arranged at the upper end of the installation groove, a plurality of sub-feeding hoppers 7 are arranged at the bottom of the feeding hopper 6, a material laying plate 8 is arranged inside the box body 1 and on one side of the sub-feeding hopper 7, a plurality of sub-mesh belt conveyors 9 are arranged inside the box body 1 and below the main mesh belt conveyor 2 at intervals, the sub-mesh belt conveyor 9 closest to the main mesh belt conveyor 2 has a moving direction opposite to that of the main mesh belt conveyor 2, and two adjacent sub-mesh belt conveyors 9 are arranged at intervals. The moving directions are opposite, the main mesh belt conveyor part 2 and the sub-mesh belt conveyor part 9 both have a starting end and a tail end, the starting end of the sub-mesh belt conveyor part 9 located at the top is used to receive the grain put by the tail end of the main mesh belt conveyor part 2, and the starting ends of each sub-mesh belt conveyor part 9 are respectively used to receive the grain put by the tail end of the previous sub-mesh belt conveyor part 9, and the outer surface of the box body 1 is provided with a discharge port 19, and the tail end of the sub-mesh belt conveyor part 9 located at the bottom is located in the discharge port 19, the widths of the main mesh belt conveyor part 2 and the sub-mesh belt conveyor part 9 decrease successively from top to bottom, the upper end of the box body 1 is provided with a dehumidification pipe 10 connected to the box body 1, and the lower end of the inner part of the box body 1 is provided with a hot air pipe 11.

[0019] Support legs are provided at the bottom of the box 1, and an external dehumidification fan is connected to the dehumidification pipe 10 to extract the water vapor in the box 1. An external hot air furnace is connected to the hot air pipe 11, and a high-temperature airflow is input into the box 1 through the hot air pipe 11 to dry the grain.

[0020] The outer surfaces of the main mesh belt conveyor part 2 and the sub-mesh belt conveyor part 9 are both provided with gaps through which grains cannot pass. The hot air transported by the hot air duct 11 can pass through the gaps on the sub-mesh belt conveyor part 9 and the main mesh belt conveyor part 2 to evaporate moisture from the grains.

[0021] Grain can be continuously delivered to the feeding hopper 6 through an external screw conveyor, and the grain enters the dividing hopper 7 through the feeding hopper 6. A plurality of dividing hoppers 7 are evenly spaced, and the dividing hoppers 7 can prevent the grain from concentrating in the middle position of the receiving section 3 of the main mesh belt conveyor part 2, so that the grain can be more evenly dispersed on the main mesh belt conveyor part 2 when feeding. After the grain is dispersed on the main mesh belt conveyor part 2 through the dividing hopper 7, the main mesh belt conveyor part 2 drives the grain to move, and the grain immediately contacts the paving plate 8. The paving plate 8 is used to spread the grain evenly on the main mesh belt conveyor part 2 to prevent the grain layer from being too thick and affecting the flow of gas.

[0022] Furthermore, guide rods 12 are symmetrically arranged on the upper surface of the material laying plate 8, and through holes slidably connected to the guide rods 12 are arranged on the upper surface of the box body 1. The upper ends of the two guide rods 12 are connected by a fixed plate 13. A base 14 is arranged on the upper surface of the box body 1, and a screw rod 15 is rotatably connected to the base 14. The screw rod 15 is threadedly connected to the fixed plate 13. By controlling the rotation of the screw rod 15, the fixed plate 13 can be controlled to move upward or downward. When the fixed plate 13 moves upward, the distance between the material laying plate 8 and the upper surface of the main mesh belt conveyor part 2 increases, and the thickness of the grain layer increases. When the fixed plate 13 moves downward, the distance between the material laying plate 8 and the upper surface of the main mesh belt conveyor part 2 decreases, and the thickness of the grain layer decreases. The thickness of the grain layer on the main mesh belt conveyor part 2 is controlled according to the moisture content of the grain. When the moisture content of the grain is low, the thickness of the grain layer is thicker, and when the moisture content of the grain is high, the thickness of the grain layer is thinner.

[0023] After the grain falls into the receiving section 3 of the main mesh belt conveyor part 2, it is transported to the feeding section 5 through the lifting section 4. The grain is fed to the sub-mesh belt conveyor part 9 immediately below the main mesh belt conveyor part 2 through the feeding section 5. The sub-mesh belt conveyor part 9 continuously receives the grain dropped from the main mesh belt conveyor part 2, and then continues to transport the grain to the next sub-mesh belt conveyor part 9 through the sub-mesh belt conveyor part 9. By using a plurality of sub-mesh belt conveyor parts 9 in coordination, the distance that the grain moves in the box body 1 can be increased. When the moving speed remains unchanged, the drying processing time can be increased. When the grain enters the sub-mesh belt conveyor part 9 at the bottom, the dried grain is discharged through the discharge port 19.

[0024] The widths of the main mesh belt conveyor section 2 and the sub-mesh belt conveyor section 9 increase sequentially from the top. When grain is fed from the main mesh belt conveyor section 2 or the sub-mesh belt conveyor section 9 of the upper layer to the sub-mesh belt conveyor section 9 of the lower layer, since there is a certain height between the adjacent main mesh belt conveyor sections 2 and sub-mesh belt conveyor sections 9, and between two adjacent sub-mesh belt conveyor sections 9, when the grain moves downward, it is easy to move outward from the side of the sub-mesh belt conveyor section 9. Therefore, the width of the lower sub-mesh belt conveyor section 9 is continuously widened, which can effectively prevent the grain from falling from the two sides of the sub-mesh belt conveyor section 9, and is also conducive to the hot air moving upward through the bottom of the box 1.

[0025] Furthermore, a vertical plate 16 is provided on one side of the paving plate 8 close to the dividing hopper 7 , and the vertical plate 16 can prevent grain from passing over the paving plate 8 , so that the thickness of the grain layer can be stably controlled by the paving plate 8 .

[0026] Furthermore, a baffle 17 is provided inside the box body 1 and above the starting end of the sub-mesh belt conveyor part 9. The baffle 17 is arranged at an angle. When the grain is conveyed from the main mesh belt conveyor part 2 to the sub-mesh belt conveyor part 9, or from the sub-mesh belt conveyor part 9 to the next sub-mesh belt conveyor part 9, the baffle 17 can guide the falling of the grain, so that as much grain as possible can fall onto the sub-mesh belt conveyor part 9, so as to reduce the situation where the grain falls to the bottom of the box body 1.

[0027] Furthermore, a plurality of diversion ducts 18 are evenly arranged on the hot air duct 11, and the openings of the diversion ducts 18 are arranged upward. Through the plurality of diversion ducts 18, the high-temperature airflow ejected from the hot air duct 11 can evenly heat the grain on the sub-mesh belt conveyor part 9 and the main mesh belt conveyor part 2, thereby improving the grain drying efficiency.

[0028] Working principle: When in use, grain is fed into the feeding section 5 on the main mesh belt conveyor part 2 through the feeding hopper 6 and the distribution hopper 7, and the grain is evenly spread on the main mesh belt conveyor part 2 through the spreading plate 8, and then the grain is continuously moved downward from the top main mesh belt conveyor part 2 to the distribution belt conveyor parts 9 on each layer. At the same time, the external high-temperature airflow dries the grain on the distribution belt conveyor part 9 and the main mesh belt conveyor part 2 through the hot air duct 11 and the diversion duct 18, and the water vapor generated during drying is discharged through the dehumidification duct 10, and the grain on the bottom distribution belt conveyor part 9 is discharged to the outside of the box body 1 through the discharge port 19.

[0029] The device can stack the main mesh belt conveyor part 2 and the sub-mesh belt conveyor part 9, thereby reducing the floor space of the drying device, improving the convenience of installation, and facilitating promotion and use. In addition, the main mesh belt conveyor part 2 and the sub-mesh belt conveyor part 9 with different widths can effectively prevent the grain from falling to the bottom of the box body 1, so that the grain can be stably dried on the main mesh belt conveyor part 2 and the sub-mesh belt conveyor part 9, reducing the loss of grain. In addition, the thickness of the grain on the main mesh belt conveyor part 2 and the sub-mesh belt conveyor part 9 can be controlled according to the moisture content of the grain, ensuring a good drying effect on the grain.

[0030] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A multi-stage grain drying device, characterized in that: The invention comprises a box body (1), wherein a main mesh belt conveyor (2) is arranged inside the box body (1), wherein the main mesh belt conveyor (2) comprises a material receiving section (3), a lifting section (4) and a feeding section (5), wherein an installation groove is provided on the outer surface of the box body (1) and located above the material receiving section (3), wherein a feeding hopper (6) is provided at the upper end of the installation groove, wherein a plurality of material distribution hoppers (7) are provided at the bottom of the material distribution hopper (6), wherein a material laying plate (8) is provided inside the box body (1) and located on one side of the material distribution hopper (7), wherein a plurality of material distribution hoppers (9) are arranged at intervals inside the box body (1) and located below the main mesh belt conveyor (2), wherein the movement direction of the material distribution hopper (9) closest to the main mesh belt conveyor (2) is opposite to the movement direction of the main mesh belt conveyor (2), and two adjacent material distribution hoppers (9) are arranged at the same time. The moving directions are opposite to each other. The main mesh belt conveyor part (2) and the sub-mesh belt conveyor part (9) both have a starting end and a tail end. The starting end of the sub-mesh belt conveyor part (9) located at the top is used to receive the grain dropped by the tail end of the main mesh belt conveyor part (2). The starting ends of each sub-mesh belt conveyor part (9) are respectively used to receive the grain dropped by the tail end of the previous sub-mesh belt conveyor part (9). The outer surface of the box body (1) is provided with a discharge port (19). The tail end of the sub-mesh belt conveyor part (9) located at the bottom is located inside the discharge port (19). The widths of the main mesh belt conveyor part (2) and the sub-mesh belt conveyor part (9) decrease from top to bottom. The upper end of the box body (1) is provided with a dehumidification pipe (10) connected to the box body (1). The lower end of the box body (1) is provided with a hot air pipe (11).

2. The multi-stage grain drying device according to claim 1 is characterized in that: The upper surface of the laying plate (8) is symmetrically provided with guide rods (12), the upper surface of the box body (1) is provided with through holes slidably connected to the guide rods (12), the upper ends of the two guide rods (12) are connected by a fixing plate (13), and the upper surface of the box body (1) is provided with a base (14), and the base (14) is rotatably connected with a screw rod (15), and the screw rod (15) is threadedly connected to the fixing plate (13).

3. The multi-stage grain drying device according to claim 2 is characterized in that: A vertical plate (16) is provided on one side of the material spreading plate (8) close to the material distribution hopper (7).

4. The multi-stage grain drying device according to claim 1 is characterized in that: A baffle (17) is arranged inside the box (1) and above the starting end of the sub-net belt conveying part (9), and the baffle (17) is arranged obliquely.

5. The multi-stage grain drying device according to any one of claims 1 to 4, characterized in that: A plurality of branch pipes (18) are evenly arranged on the hot air pipe (11), and the openings of the branch pipes (18) are arranged upward.

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