A containerized grain storage nitrogen atmosphere control device

Abstract

This utility model discloses a nitrogen atmosphere control device for containerized grain storage, used in the field of nitrogen atmosphere control technology for containerized grain storage. Its features include: a nitrogen generator (1); an inlet pipe (2); a nitrogen storage tank (3); a pressure sensor (4); an atmosphere control cabinet (5); an inlet electric valve (6); a container (7); a return electric valve (8); and a return pipe (9). This utility model can solve the problem of nitrogen atmosphere control in containerized grain storage.

Description

Technical Field

[0001] This utility model belongs to the field of nitrogen atmosphere control technology for container grain storage, and in particular, it is a nitrogen atmosphere control device for container grain storage with nitrogen ring filling function. Background Technology

[0002] Containerized grain storage is mainly used for conventional reserves, off-site reserves, strategic reserves, and mixed storage. As a new grain storage model, aiming to achieve "green grain storage," the best method is nitrogen-controlled atmosphere storage, which has advantages such as no pollution, no toxic residues, helps maintain grain quality, and has a low risk of pest resistance, thus meeting the requirements of "green grain storage." Containerized grain storage nitrogen-controlled atmosphere devices are highly automated and easy to operate, making them suitable for widespread application in the containerized grain storage industry. Summary of the Invention

[0003] To solve the problem of nitrogen atmosphere regulation in containerized grain storage, this utility model provides a nitrogen atmosphere regulation device for containerized grain storage. The device includes a nitrogen generator, an air inlet pipeline, a nitrogen storage tank, a pressure sensor, an atmosphere regulation control cabinet, an air inlet electric valve, a container, a return electric valve, and a return pipeline.

[0004] The nitrogen generator is a membrane separation nitrogen generator, and the nitrogen outlet is connected to the inlet of the nitrogen storage tank through an inlet pipe.

[0005] The controlled atmosphere control cabinet has a first port, a second port, a third port, and a fourth port. The outlet of the nitrogen storage tank is connected to the first port of the controlled atmosphere control cabinet via an inlet pipe. The third port of the controlled atmosphere control cabinet is connected to the inlet of the inlet electric valve via an inlet pipe. The outlet of the inlet electric valve is connected to the inlet of the container. The return port of the container is connected to the inlet of the return electric valve via a return pipe. The outlet of the return electric valve is connected to the fourth port of the controlled atmosphere control cabinet via a return pipe. The second port of the controlled atmosphere control cabinet is connected to the return port of the nitrogen generator via a return pipe.

[0006] The pressure sensor detects the nitrogen pressure inside the nitrogen storage tank.

[0007] The controlled atmosphere control cabinet has local operation control functions and can automatically detect the nitrogen concentration and pressure inside the container.

[0008] The beneficial effects of this invention are: by increasing the number of controlled atmosphere control cabinets as needed, multiple containers can be simultaneously subjected to nitrogen controlled atmosphere, improving work efficiency and reducing grain storage costs. The nitrogen generator automatically starts and stops by comparing the pressure sensor's detected value with the set value. The controlled atmosphere control cabinet automatically controls the nitrogen controlled atmosphere process by collecting the nitrogen concentration and pressure inside the container. This achieves fully automated operation of nitrogen controlled atmosphere for containerized grain storage, reducing the user's workload and thus lowering labor and grain storage costs. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the nitrogen atmosphere control device for containerized grain storage according to this utility model.

[0010] Figure 2 This is a schematic diagram of the operation of the nitrogen atmosphere control device for containerized grain storage of this utility model.

[0011] Figure 1 In the middle: 1. Nitrogen generator; 2. Inlet pipe; 3. Nitrogen storage tank; 4. Pressure sensor; 5. Atmosphere control cabinet; 6. Inlet electric valve; 7. Container; 8. Return electric valve; 9. Return pipe; 501, First port; 502, Second port; 503, Third port; 504, Fourth port. Detailed Implementation

[0012] like Figure 1 As shown, the nitrogen outlet of the nitrogen generator (1) is connected to the inlet of the nitrogen storage tank (3) through the inlet pipe (2), the outlet of the nitrogen storage tank (3) is connected to the first port (501) of the atmosphere control cabinet (5) through the inlet pipe (2), the third port (503) of the atmosphere control cabinet (5) is connected to the inlet of the inlet electric valve (6) through the inlet pipe (2), the outlet of the inlet electric valve (6) is connected to the inlet of the container (7), the return port of the container (7) is connected to the inlet of the return electric valve (8) through the return pipe (9), the outlet of the return electric valve (8) is connected to the fourth port (504) of the atmosphere control cabinet (5) through the return pipe (9), and the second port (502) of the atmosphere control cabinet (5) is connected to the return port of the nitrogen generator (1) through the return pipe (9).

[0013] like Figure 1 As shown, the pressure sensor (4) is installed on the nitrogen storage tank (3) to detect the nitrogen pressure inside the nitrogen storage tank (3).

[0014] like Figure 2 As shown, during nitrogen atmosphere regulation, the nitrogen produced by the nitrogen generator (1) enters the nitrogen storage tank (3). The nitrogen in the nitrogen storage tank (3) enters the atmosphere regulation control cabinet (5) through the inlet pipe (2) via the first port (501), the third port (503), and the inlet electric valve (6) into the container (7). The nitrogen flows from top to bottom through the grain pile inside the container (7), flows out from the return port of the container (7), passes through the return electric valve (8), the fourth port (504) and the second port (502) of the atmosphere regulation control cabinet (5), and flows back to the nitrogen generator (1).

[0015] like Figure 2As shown, during nitrogen gas regulation, the pressure sensor (4) detects the nitrogen pressure in the nitrogen storage tank (3) in real time. When the nitrogen pressure is greater than the set value, the nitrogen generator (1) automatically stops. When the nitrogen pressure is less than the set value, the nitrogen generator (1) automatically starts.

[0016] like Figure 2 As shown, during nitrogen atmosphere conditioning, the inlet electric valve (6) and the return electric valve (8) automatically open. The atmosphere conditioning control cabinet (5) monitors the nitrogen concentration and pressure inside the container (7) in real time, and simultaneously controls the nitrogen pressure inside the container (7) within the set value range. When the nitrogen concentration inside the container (7) reaches the set value, the inlet electric valve (6) and the return electric valve (8) automatically close, and the nitrogen atmosphere conditioning ends.

Claims

1. A nitrogen gas adjusting device for container grain storage, comprising a nitrogen generator (1), an air inlet pipeline (2), a nitrogen storage tank (3), a pressure sensor (4), a gas adjusting control cabinet (5), an air inlet electric valve (6), a container (7), a backflow electric valve (8), a backflow pipeline (9), characterized in that: The controlled atmosphere control cabinet (5) has a first port (501), a second port (502), a third port (503), and a fourth port (504). The nitrogen outlet of the nitrogen generator (1) is connected to the inlet of the nitrogen storage tank (3) through the inlet pipe (2). The outlet of the nitrogen storage tank (3) is connected to the first port (501) of the controlled atmosphere control cabinet (5) through the inlet pipe (2). The third port (503) of the controlled atmosphere control cabinet (5) is connected to the inlet pipe (2). The air inlet of the air inlet electric valve (6) is connected to the air outlet of the air inlet of the container (7). The return port of the container (7) is connected to the air inlet of the return electric valve (8) through the return pipe (9). The air outlet of the return electric valve (8) is connected to the fourth port (504) of the atmosphere control cabinet (5) through the return pipe (9). The second port (502) of the atmosphere control cabinet (5) is connected to the return port of the nitrogen generator (1) through the return pipe (9).

2. The nitrogen controlled atmosphere system for grain storage in containers according to claim 1, characterized in that: The pressure sensor (4) detects the nitrogen pressure in the nitrogen storage tank (3) in real time. When the nitrogen pressure is greater than the set value, the nitrogen generator (1) stops automatically. When the nitrogen pressure is less than the set value, the nitrogen generator (1) starts automatically.

3. The nitrogen atmosphere control device for containerized grain storage according to claim 1, characterized in that: When nitrogen is regulated, the inlet electric valve (6) and the return electric valve (8) open automatically. The regulated gas control cabinet (5) monitors the nitrogen concentration and pressure inside the container (7) in real time and controls the nitrogen pressure inside the container (7) within the set value range. When the nitrogen concentration inside the container (7) reaches the set value, the inlet electric valve (6) and the return electric valve (8) close automatically.

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