Device for adjusting pressure in bin through nitrogen filling ring and controlled atmosphere

Abstract

The utility model discloses a device for adjusting the pressure in a bin through nitrogen gas filling and controlled atmosphere, which is used in the technical field of nitrogen gas controlled atmosphere grain storage and is characterized by comprising an adjustable electric valve (4), a stop valve (3), a three-way pipeline (2), a controlled atmosphere pipeline (5), a detection gas pipe (7) and a micro-pressure sensor (8). According to the utility model, the problem that the pressure in the bin cannot be automatically adjusted during nitrogen ring filling gas adjustment can be solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of nitrogen gas-controlled grain storage, in particular to a nitrogen gas-controlled grain storage system with a nitrogen ring-filling gas-controlled function. Background Art

[0002] During the nitrogen filling and air conditioning process, if the pressure inside the warehouse is higher than 50Pa or lower than -50Pa, the air tightness of the warehouse will be damaged, thereby increasing the air conditioning time and the grain storage cost. At present, when the pressure inside the warehouse is too high or too low during nitrogen filling and air conditioning, it can only be temporarily stopped and left to stand until the pressure inside the warehouse returns to normal pressure before continuing. The automatic adjustment of the pressure inside the warehouse cannot be achieved. This not only increases the filling and air conditioning time and the workload of the operator, but also increases the grain storage cost. Summary of the invention

[0003] The utility model provides a nitrogen gas conditioning device for automatically regulating the pressure in the bin to solve the problem that the pressure in the bin cannot be automatically regulated during the nitrogen filling ring gas conditioning process. The device comprises an adjustable electric valve, a stop valve, a three-way pipeline, a gas conditioning pipeline, a detection gas pipe and a micro-pressure sensor.

[0004] The three-way pipeline has a first port, a second port and a third port. The first port of the three-way pipeline is connected to the air inlet of the nitrogen generator, the second port of the three-way pipeline is connected to the air outlet of the stop valve, and the third port of the three-way pipeline is connected to the air outlet of the adjustable electric valve.

[0005] The adjustable electric valve air inlet is connected to the air, and the stop valve air inlet is connected to the warehouse bottom pipeline through the air conditioning pipeline.

[0006] The air inlet end of the detection air pipe is inserted into the middle of the grain pile, and the air outlet end is connected to a micro-pressure sensor.

[0007] The utility model automatically adjusts the opening of the adjustable electric valve according to the pressure in the warehouse collected by the micro-pressure sensor, controls the air intake amount, and realizes the purpose of automatically adjusting the pressure in the warehouse.

[0008] The beneficial effects of the utility model are as follows: by automatically adjusting the pressure in the warehouse, the nitrogen filling and gas conditioning operation is fully automatically operated, the filling and gas conditioning time is reduced, the workload of the operator is reduced, and the grain storage cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of the structure of the nitrogen-filled ring gas-conditioning device for regulating the pressure in the chamber of the utility model;

[0010] Figure 2 This is a schematic diagram of the working of the nitrogen-filled ring gas-conditioning device for regulating the pressure in the chamber of the utility model;

[0011] Figure 1In: 1. Nitrogen production device; 2. Three-way pipeline; 201. First port; 202. Second port; 203. Third port; 3. Stop valve; 4. Electric regulating valve; 5. Gas control pipeline; 6. Warehouse; 7. Detection gas pipe; 8. Micro pressure sensor. DETAILED DESCRIPTION

[0012] like Figure 1 As shown, the air inlet of the nitrogen generating device (1) is connected to the first port (201) of the three-way pipeline (2), the second port (202) of the three-way pipeline (2) is connected to the air outlet of the stop valve (3), the air inlet of the stop valve (3) is connected to the bottom pipeline of the warehouse (6) through the gas control pipeline (5), the third port (203) of the three-way pipeline (2) is connected to the air outlet of the electric regulating valve 4, and the air inlet of the adjustable electric valve (4) is connected to the air.

[0013] like Figure 1 As shown, the air inlet of the detection air pipe (7) is inserted into the grain pile, and the air outlet is connected to the micro-pressure sensor (8).

[0014] like Figure 2 As shown, when nitrogen is filled in a ring and regulated, since the air intake of the nitrogen-generating device (1) into the warehouse is fixed, the pressure in the warehouse can be regulated by adjusting the air output of the warehouse (6). According to the pressure in the warehouse collected by the micro-pressure sensor (8), the opening of the adjustable electric valve (4) is automatically adjusted. When the pressure in the warehouse is higher, the opening of the adjustable electric valve (4) is smaller, the nitrogen-generating device (1) inhales less air, the air output of the warehouse (6) increases, and the pressure in the warehouse decreases. Similarly, when the pressure in the warehouse is lower, the opening of the adjustable electric valve (4) is larger, the nitrogen-generating device (1) inhales more air, the air output of the warehouse (6) decreases, and the pressure in the warehouse increases. In this way, the pressure in the warehouse can be kept within a normal range, and the pressure in the warehouse can be automatically regulated.

[0015] like Figure 2 As shown, the stop valve (3) is used to automatically open during the nitrogen filling and gas conditioning operation, so that the gas in the bin enters the nitrogen making device (1) through the stop valve (3). When the nitrogen filling and gas conditioning operation is completed, it is automatically closed to seal the nitrogen in the bin and prevent leakage.

[0016] like Figure 2 As shown, the function of the micro-pressure sensor (8) is to detect the pressure in the warehouse. The detection point is arranged in the center of the grain pile in the warehouse, and the detection air pipe (7) is inserted to a depth of half the height of the grain pile to ensure that the detected pressure in the warehouse is accurate.

Claims

1. A nitrogen-filled ring gas-controlled pressure regulating device, comprising an adjustable electric valve (4), a stop valve (3), a three-way pipeline (2), a gas-controlled pipeline (5), a detection gas pipe (7), and a micro-pressure sensor (8), characterized in that: The three-way pipeline (2) has a first port (201), a second port (202), and a third port (203); the air inlet of the nitrogen generating device (1) is connected to the first port (201) of the three-way pipeline (2); the second port (202) of the three-way pipeline (2) is connected to the air outlet of the stop valve (3); the air inlet of the stop valve (3) is connected to the bottom pipeline of the warehouse (6) through the gas conditioning pipeline (5); the third port (203) of the three-way pipeline (2) is connected to the air outlet of the adjustable electric valve (4); the air inlet of the detection air pipe (7) is inserted into the grain pile; and the air outlet is connected to the micro-pressure sensor (8).

2. A nitrogen-filled ring atmosphere regulating chamber pressure regulating device according to claim 1, characterized in that: According to the pressure inside the bin collected by the micro-pressure sensor (8), the opening of the adjustable electric valve (4) is automatically adjusted to control the air intake volume, thereby realizing automatic adjustment of the pressure inside the bin.

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