A nitrogen-filled grain storage bin

Abstract

This utility model relates to the field of grain storage technology and discloses a nitrogen-filled grain storage bin, including an outer bin and an inner bin fixedly installed inside the outer bin. The feed pipe of the inner bin extends from the top of the outer bin and the discharge pipe of the inner bin extends from the bottom of the outer bin. An air inlet is fixedly installed on the bottom inner wall of the outer bin. The nitrogen gas flow can only flow from bottom to top, squeezing out the oxygen mixed in the grain and forming an up-and-down airflow channel, which can better squeeze out the oxygen. At the same time, the nitrogen gas sprayed from the second air outlet enters the outer bin to replace the original air environment inside the outer bin. The fine perforated plate separates most of the grain from the vent holes, so that the grain is loose when piled at the vent holes, which allows the nitrogen gas to enter the outer bin better. The fine perforated plate can also further disperse the nitrogen gas flow, so that the nitrogen gas can enter the gaps between the grains better.

Description

Technical Field

[0001] This utility model relates to the field of grain storage technology, specifically a nitrogen-filled grain storage silo. Background Technology

[0002] As a storage facility for grain, grain silos are known to be susceptible to mold growth due to the presence of oxygen in the silo and the failure of the grain to fully release moisture. To address this issue, nitrogen-filled grain silos have evolved from the original single-layer silos to the current nitrogen-filled silos. Existing grain silos can be filled with nitrogen, which can expel oxygen from the silo and prevent the grain from molding. To improve venting efficiency, some manufacturers create vents on the outside of the silo, allowing nitrogen to enter the grain from various directions. However, this setup results in nitrogen and oxygen mixing, with a significant amount of oxygen failing to escape. Summary of the Invention

[0003] The purpose of this invention is to provide a nitrogen-filled grain storage silo to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a nitrogen-filled grain storage bin, comprising an outer bin body, an inner bin body fixedly disposed within the outer bin body, a feed pipe of the inner bin body extending from the top of the outer bin body, a discharge pipe of the inner bin body extending from the bottom of the outer bin body, an air inlet chamber fixedly installed on the bottom inner wall of the outer bin body, a nitrogen increasing and conveying component disposed on the outer side of the outer bin body, the output end of the nitrogen increasing and conveying component communicating with the interior of the air inlet chamber, an air outlet pipe one connected to the top of the air inlet chamber, an air outlet pipe two connected to the side of the air inlet chamber, the air outlet pipe one aligned with the vent hole at the bottom of the inner bin body, a perforated plate fixedly installed on the inner wall of the inner bin body, a gap left between the perforated plate and the bottom inner wall of the inner bin body, and a discharge end sealing component detachably disposed at the bottom of the outer bin body by bolts, the discharge end sealing component sealing the bottom end of the discharge pipe.

[0005] Furthermore, the discharge end sealing component includes a sealing plate, the top of which is snapped onto the bottom inner wall of the outer chamber, and a sealing plug is fixedly installed on the top of the sealing plate. The sealing plug is tightly pressed against the bottom port of the discharge pipe, and the sealing plate is fixedly connected to the outer chamber by bolts.

[0006] Furthermore, the nitrogen delivery component includes a booster pump and a nitrogen buffer tank. The output end of the nitrogen buffer tank is connected to the input end of the booster pump via a pipe. The output end of the booster pump is connected to an air inlet pipe, and the top end of the air inlet pipe is connected to the interior of the air inlet chamber.

[0007] Furthermore, a shielding compartment is fixedly installed on the top of the outer compartment, the top of the shielding compartment has a through hole, and a sealing cover is fixedly installed on the top of the shielding compartment by bolts, the sealing cover covering the through hole on the top of the shielding compartment.

[0008] Furthermore, a pressure gauge is installed on the outside of the outer chamber, and the air inlet of the pressure gauge is connected to the inside of the outer chamber through a pipe.

[0009] Furthermore, an exhaust pipe is connected to the right side of the shielded compartment, an exhaust pipe is connected to the end of the exhaust pipe, an exhaust pipe is connected to the outlet of the one-way valve, and an electric pressure relief valve is connected to the top of the exhaust pipe.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] 1. The nitrogen gas flow can only flow from bottom to top, squeezing out the oxygen mixed in the grain and forming an airflow channel that flows up and down. This allows for better oxygen expulsion. At the same time, the nitrogen gas ejected from the second outlet pipe enters the outer chamber to replace the original air environment inside the outer chamber. Furthermore, the fine perforated plate separates most of the grain from the vents, making the grain loose when piled at the vents, allowing nitrogen gas to enter the outer chamber better. The fine perforated plate can also further disperse the nitrogen gas flow, allowing nitrogen gas to enter the gaps between the grains better.

[0012] 2. The one-way valve ensures that airflow can only be discharged outward from the shielded silo. After the sealing cover is closed, exhaust pipe one, one-way valve, exhaust pipe two, and electric pressure relief valve can still form an exhaust channel, preventing the problem of excessive air pressure in the outer and inner silos caused by grain heating. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This utility model Figure 1 A structural schematic diagram of the front sectional view;

[0015] Figure 3 This utility model Figure 2 A schematic diagram of the structure of the enlarged view at point A in the middle;

[0016] Figure 4 This is a schematic diagram of the air intake chamber of this utility model.

[0017] In the diagram: 1. Outer chamber; 2. Inner chamber; 201. Feed pipe; 202. Discharge pipe; 3. Discharge end sealing component; 301. Sealing plate; 302. Sealing plug; 4. Air inlet chamber; 5. Air outlet pipe one; 6. Vent hole; 7. Fine perforation plate; 8. Air outlet pipe two; 9. Nitrogen booster and conveying component; 901. Booster pump; 902. Air inlet pipe; 903. Nitrogen buffer tank; 904. Nitrogen conveying pipe; 10. Shielding chamber; 11. Pressure gauge; 12. Exhaust pipe one; 13. Check valve; 14. Exhaust pipe two; 15. Electric pressure relief valve; 16. Sealing cover plate. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Please see Figures 1-4 This utility model provides a technical solution: a nitrogen-filled grain storage bin, including an outer bin 1, an inner bin 2 fixedly installed inside the outer bin 1, grain being placed inside the inner bin 2, an inlet pipe 201 of the inner bin 2 extending from the top of the outer bin 1, an outlet pipe 202 of the inner bin 2 extending from the bottom of the outer bin 1, an air inlet chamber 4 fixedly installed on the bottom inner wall of the outer bin 1, a nitrogen boosting and conveying component 9 installed on the outer side of the outer bin 1, the output end of the nitrogen boosting and conveying component 9 communicating with the interior of the air inlet chamber 4, an outlet pipe 5 connected to the top of the air inlet chamber 4, an outlet pipe 8 connected to the side of the air inlet chamber 4, the outlet pipe 5 being aligned with the vent hole 6 at the bottom of the inner bin 2 (the inner diameter of the vent hole 6 is smaller than the outer diameter of the grain), a perforated plate 7 fixedly installed on the inner wall of the inner bin 2, a gap being left between the perforated plate 7 and the bottom inner wall of the inner bin 2, and an outlet sealing component 3 being installed at the bottom of the outer bin 1 by bolts. The discharge end sealing component 3 seals the bottom end of the discharge pipe 202. The pressurized nitrogen is transported to the air inlet chamber 4 by the nitrogen booster conveying component 9. Then, the nitrogen is sprayed out from the first air outlet pipe 5 and the second air outlet pipe 8. The nitrogen sprayed out from the first air outlet pipe 5 enters the inner chamber 2 through the vent 6. At this time, the discharge pipe 202 at the bottom of the inner chamber 2 is blocked by the discharge end sealing component 3. The nitrogen flow can only flow from bottom to top to squeeze out the oxygen mixed in the grain, forming an airflow channel that can squeeze out the oxygen better. At the same time, the nitrogen sprayed out from the second air outlet pipe 8 enters the outer chamber 1 to replace the original air environment in the outer chamber 1. The fine perforated plate 7 separates most of the grain from the vent 6, so that the grain is loose when it is piled up at the vent 6, which allows the nitrogen to enter the outer chamber 1 better. The fine perforated plate 7 can also further disperse the nitrogen flow, so that the nitrogen can enter the gaps between the grains better.

[0020] The discharge end sealing component 3 includes a sealing plate 301. The top of the sealing plate 301 is snapped onto the bottom inner wall of the outer chamber 1. A sealing plug 302 is fixedly installed on the top of the sealing plate 301. The sealing plug 302 is tightly pressed against the bottom port of the discharge pipe 202. The sealing plate 301 is fixedly connected to the outer chamber 1 by bolts. The sealing plate 301 is set to install the sealing plug 302, so that the sealing plug 302 is tightly pressed against the port of the discharge pipe 202.

[0021] The nitrogen booster delivery component 9 includes a booster pump 901 and a nitrogen buffer tank 903. The output end of the nitrogen buffer tank 903 is connected to the input end of the booster pump 901 through a pipe. The output end of the booster pump 901 is connected to an air inlet pipe 902. The top end of the air inlet pipe 902 is connected to the inside of the air inlet chamber 4. Nitrogen in the nitrogen storage tank is delivered to the nitrogen buffer tank 903 through the nitrogen delivery pipe 904. Then the booster pump 901 extracts the nitrogen in the nitrogen buffer tank 903 and pressurizes it. After pressurization, the nitrogen enters the air inlet chamber 4 from the air inlet pipe 902.

[0022] A shielding chamber 10 is fixedly installed on the top of the outer chamber 1. The top of the shielding chamber 10 has a through hole. A sealing cover 16 is fixedly installed on the top of the shielding chamber 10 by bolts. The sealing cover 16 covers the through hole on the top of the shielding chamber 10. The shielding chamber 10 and the sealing cover 16 are used to seal the top of the feed pipe 201. During the storage of grain, small animals can be prevented from entering the inner chamber 2. When adding grain, the sealing cover 16 can be removed. The sealing cover 16 can also be removed when venting oxygen from the inner chamber 2.

[0023] A pressure gauge 11 is installed on the outside of the outer chamber 1. The air inlet of the pressure gauge 11 is connected to the inside of the outer chamber 1 through a pipe. The pressure gauge 11 is installed to monitor the air pressure inside the outer chamber 1 and prevent the air pressure inside the outer chamber 1 from being too high.

[0024] The right side of the shielded silo 10 is connected to an exhaust pipe 12. The end of the exhaust pipe 12 is connected to a one-way valve 13. The outlet of the one-way valve 13 is connected to an exhaust pipe 2 14. The top of the exhaust pipe 2 14 is connected to an electric pressure relief valve 15. The one-way valve 13 ensures that the airflow can only be discharged from the shielded silo 10. After the sealing cover 16 is closed, the exhaust pipe 12, the one-way valve 13, the exhaust pipe 2 14, and the electric pressure relief valve 15 can still form an exhaust channel, which avoids the problem of excessive air pressure in the outer silo 1 and the inner silo 2 due to the grain heating.

[0025] Working principle: During use, open the sealing cover 16 and add grain into the inner chamber 2 through the feed pipe 201. After entering the inner chamber 2, the grain falls and accumulates. Due to the obstruction of the perforated plate 7, less grain enters the gap between the perforated plate 7 and the bottom inner wall of the inner chamber 2. Then, turn on the booster pump 901 to extract nitrogen from the nitrogen buffer tank 903 and pressurize it. After pressurization, the nitrogen enters the air inlet chamber 4 through the air inlet pipe 902, and then exits through the air outlet pipe 5. Nitrogen gas is ejected from the second outlet pipe 8 and enters the inner chamber 2 through the vent 6. At this time, the discharge pipe 202 at the bottom of the inner chamber 2 is blocked by the discharge end sealing component 3. The nitrogen gas flow can only flow from bottom to top to squeeze out the oxygen mixed in the grain, forming an airflow channel that can better squeeze out the oxygen. At the same time, the nitrogen gas ejected from the second outlet pipe 8 enters the outer chamber 1 to replace the original air environment in the outer chamber 1. After the oxygen is discharged, the sealing cover 16 can be closed.

[0026] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

Claims

1. A nitrogen-filled grain storage bin, comprising an outer bin (1), wherein an inner bin (2) is fixedly disposed inside the outer bin (1), a feed pipe (201) of the inner bin (2) extends from the top of the outer bin (1), and a discharge pipe (202) of the inner bin (2) extends from the bottom of the outer bin (1), characterized in that: An air inlet chamber (4) is fixedly installed on the bottom inner wall of the outer chamber (1). A nitrogen increasing and conveying component (9) is provided on the outside of the outer chamber (1). The output end of the nitrogen increasing and conveying component (9) is connected to the inside of the air inlet chamber (4). An air outlet pipe (5) is connected to the top of the air inlet chamber (4). An air outlet pipe (8) is connected to the side of the air inlet chamber (4). The air outlet pipe (5) is aligned with the vent hole (6) at the bottom of the inner chamber (2). A perforated plate (7) is fixedly installed on the inner wall of the inner chamber (2). A gap is left between the perforated plate (7) and the bottom inner wall of the inner chamber (2). A discharge end sealing component (3) is installed at the bottom of the outer chamber (1) by bolts. The discharge end sealing component (3) seals the bottom end of the discharge pipe (202).

2. The nitrogen-filled grain storage silo according to claim 1, characterized in that: The discharge end sealing component (3) includes a sealing plate (301). The top of the sealing plate (301) is attached to the bottom inner wall of the outer chamber (1). A sealing plug (302) is fixedly installed on the top of the sealing plate (301). The sealing plug (302) is tightly pressed against the bottom port of the discharge pipe (202). The sealing plate (301) is fixedly connected to the outer chamber (1) by bolts.

3. The nitrogen-filled grain storage silo according to claim 1, characterized in that: The nitrogen booster delivery component (9) includes a booster pump (901) and a nitrogen buffer tank (903). The output end of the nitrogen buffer tank (903) is connected to the input end of the booster pump (901) through a pipe. The output end of the booster pump (901) is connected to an air inlet pipe (902). The top end of the air inlet pipe (902) is connected to the interior of the air inlet chamber (4).

4. A nitrogen-filled grain storage silo according to claim 1, characterized in that: The top of the outer compartment (1) is fixedly installed with a shielding compartment (10). The top of the shielding compartment (10) has a through hole. The top of the shielding compartment (10) is fixedly installed with a sealing cover plate (16) by bolts. The sealing cover plate (16) covers the through hole at the top of the shielding compartment (10).

5. A nitrogen-filled grain storage silo according to claim 1, characterized in that: A pressure gauge (11) is provided on the outside of the outer chamber (1), and the air inlet of the pressure gauge (11) is connected to the inside of the outer chamber (1) through a pipe.

6. A nitrogen-filled grain storage silo according to claim 4, characterized in that: The right side of the shielding chamber (10) is connected to an exhaust pipe (12), the end of the exhaust pipe (12) is connected to a one-way valve (13), the outlet of the one-way valve (13) is connected to an exhaust pipe (14), and the top of the exhaust pipe (14) is connected to an electric pressure relief valve (15).

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