Finished grain silo stacking carbon dioxide modified pipe structure

Abstract

This utility model discloses a modified atmosphere (MAP) pipeline structure for finished grain storage, comprising two horizontal pipes. An inflation mechanism is provided on the outer right surface of the right horizontal pipe, comprising a cap, an internal threaded connector, a pipe joint, and a pneumatic switch. A vertical pipe is provided above the two horizontal pipes, and the two horizontal pipes are connected to the vertical pipe via a T-joint, arranged in an inverted T-shape. A cap is sealed and snapped onto the left end of the left horizontal pipe and the upper end of the left vertical pipe. This structure optimizes the MAP layout, ensures uniform and stable carbon dioxide concentration during MAP, and provides a convenient inflation interface.

Description

Technical Field

[0001] This utility model relates to the field of carbon dioxide controlled atmosphere technology for grain storage, and in particular to a carbon dioxide controlled atmosphere pipeline structure for stacking finished grain warehouses. Background Technology

[0002] Pest control is a crucial part of grain storage. Common pest control methods used by grain reserve units include aluminum phosphide fumigation and controlled atmosphere storage. Aluminum phosphide fumigation is a traditional method that kills pests by releasing phosphine gas. Nitrogen-controlled atmosphere storage replaces oxygen in the sealed grain pile, maintaining a high concentration of nitrogen for an extended period, causing pests to suffocate due to oxygen deprivation. Carbon dioxide-controlled atmosphere storage can completely kill pests at all stages, including adults, larvae, pupae, and eggs, effectively extending the pest-free period. In accordance with the national requirements for high-quality development in the grain industry, aluminum phosphide fumigation is prohibited. All units are actively applying green and environmentally friendly pest control technologies and implementing green controlled atmosphere storage operations. For nitrogen-controlled atmosphere storage, a high nitrogen concentration is required. It takes 28 days for nitrogen-based controlled atmosphere storage to achieve a carbon dioxide concentration of over 98%, which requires a high degree of airtightness in the storage facility. In contrast, controlled atmosphere storage with carbon dioxide requires a concentration of over 35% and can kill all pest morphologies within 15 days, achieving a 100% kill rate. Compared to carbon dioxide, nitrogen-based controlled atmosphere storage has disadvantages such as longer storage time, high airtightness requirements, difficulty in maintaining concentration, and inability to completely kill pests. Carbon dioxide-based controlled atmosphere storage can completely kill pests and has the advantages of fast insecticidal speed and low airtightness requirements, making it more suitable for the actual conditions of grain depots. Currently, grain reserve units mainly store finished grain in small stacks. Exploring a controlled atmosphere pipeline layout that is more suitable for finished grain stacks with certain airtightness conditions is of great significance for pest control and preservation of stored grain. Utility Model Content

[0003] The purpose of this utility model is to provide a carbon dioxide modified atmosphere pipeline structure for finished grain silos, which can optimize the layout design of the modified atmosphere pipeline, ensure that the gas concentration is uniform and stable during the carbon dioxide modified atmosphere period, and provide a convenient gas filling interface.

[0004] To achieve the above objectives, a carbon dioxide modified atmosphere pipeline structure for finished grain storage is provided, comprising two horizontal pipes. An inflation mechanism is provided on the outer right surface of the right horizontal pipe. The inflation mechanism includes a pipe cap, an internal threaded straight connector, an air pipe joint, and a pneumatic switch. A vertical pipe is provided on the upper side of the two horizontal pipes. The two horizontal pipes and the vertical pipe are connected by a tee pipe and are distributed in an inverted T shape. The left end of the left horizontal pipe and the upper end of the vertical pipe are both sealed with a pipe cap.

[0005] According to the aforementioned structure of a carbon dioxide controlled atmosphere pipeline for stacking finished grain warehouses, the second pipe cap is sealed and snapped onto the right end of the horizontal pipe, and a connection hole is provided on the outer right side surface of the second pipe cap, with the left end of the internal thread straight through sealed and bonded to the inner surface of the connection hole.

[0006] According to the aforementioned finished grain silo stacking carbon dioxide modified atmosphere pipeline structure, the inner right surface of the internal thread straight connector is provided with a threaded groove, and the outer left surface of the air pipe connector is provided with a threaded body. The threaded body is threadedly connected to the inner surface of the threaded groove to realize a detachable connection between the internal thread straight connector and the air pipe connector.

[0007] According to the aforementioned finished grain warehouse stacking carbon dioxide modified atmosphere pipeline structure, a connecting gas pipe is provided on the right side of the gas pipe joint, and a sealing ring is provided between the gas pipe joint and the connecting gas pipe. The sealing ring is made of rubber to prevent gas leakage.

[0008] According to the aforementioned finished grain warehouse stacking carbon dioxide modified atmosphere pipeline structure, the left side of the pneumatic switch is connected to a connecting air pipe, which is a flexible hose. The input end of the pneumatic switch is connected to a carbon dioxide gas source device for quickly controlling the on / off of the gas in the pipeline.

[0009] According to the aforementioned finished grain warehouse stacked carbon dioxide modified atmosphere pipeline structure, the outer surfaces of the two horizontal pipes are each provided with a number of holes of diameter I at equal intervals, and the outer surfaces of the vertical pipes are provided with a number of holes of diameter II at equal intervals. Gas can diffuse evenly into the stack through the number of holes of diameter I and diameter II.

[0010] This utility model has the following beneficial effects: 1. Compared with existing technologies, this stacked carbon dioxide modified atmosphere pipeline arrangement method can effectively improve the uniform distribution of gas during carbon dioxide modified atmosphere, so that carbon dioxide gas can fully reach the interior of the stack. The gas inlet is conducive to the access of gas for filling and replenishing. It actively leverages the advantages of carbon dioxide modified atmosphere in killing insects, which is highly targeted, precise and rapid, and effective in killing and preventing insects. It also leverages the advantages of modified atmosphere for small stacks with low airtightness, greatly improving the quality and efficiency of grain storage. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a schematic diagram of the overall structure of a carbon dioxide controlled atmosphere pipeline for stacking finished grain warehouses according to this utility model. Figure 2 This is a schematic diagram of the inflation mechanism of a carbon dioxide modified atmosphere pipeline structure for stacking finished grain warehouses according to this utility model. Figure 3 This is a schematic diagram of the internal thread straight passage and gas pipe interface structure of a finished grain warehouse stacking carbon dioxide modified atmosphere pipeline structure according to the present invention. Figure 4 This utility model relates to a structure for a carbon dioxide controlled atmosphere pipeline for stacking finished grain silos. Figure 1 Enlarged schematic diagram of the structure at point A in the middle.

[0012] Legend: 1. Horizontal tube; 2. Vertical tube; 3. Inflation mechanism; 4. Tube cap one; 5. Hole one; 6. Hole two; 7. T-joint; 31. Pipe cap 2; 311. Connecting hole; 32. Internal thread straight through; 321. Threaded groove; 33. Air pipe connector; 331. Threaded body; 34. Connecting air pipe; 35. Pneumatic switch. Detailed Implementation

[0013] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0014] Reference Figure 1-4 This utility model discloses a carbon dioxide modified atmosphere pipeline structure for finished grain storage, comprising two horizontal pipes 1. An inflation mechanism 3 is provided on the outer surface of the right end of the left horizontal pipe 1. The inflation mechanism 3 includes a second pipe cap 31, an internal threaded straight connector 32, an air pipe connector 33, and a pneumatic switch 35. The second pipe cap 31 is sealed and snapped onto the right end of the horizontal pipe 1. A connecting hole 311 is provided on the outer surface of the right side of the second pipe cap 31. The left end of the internal threaded straight connector 32 is sealed and snapped onto the inner surface of the connecting hole 311. A threaded groove 321 is provided on the inner surface of the right side of the internal threaded straight connector 32. The left end of the air pipe connector 33... A threaded body 331 is provided on the outer side surface. The threaded body 331 is threaded to the inner surface of the threaded groove 321 to realize the detachable connection between the internal thread straight-through 32 and the air pipe connector 33. A connecting air pipe 34 is provided on the right side of the air pipe connector 33. A sealing ring is provided between the air pipe connector 33 and the connecting air pipe 34. The sealing ring is made of rubber to prevent gas leakage. The connecting air pipe 34 is connected to the left side of the pneumatic switch 35. The connecting air pipe 34 is a flexible hose. The input end of the pneumatic switch 35 is connected to the carbon dioxide gas source equipment to quickly control the on / off of the gas in the pipeline.

[0015] A vertical pipe 2 is provided on the upper side of the two horizontal pipes 1. The two horizontal pipes 1 and the vertical pipe 2 are connected by a tee pipe 7 and are distributed in an inverted T shape. The two horizontal pipes 1 and the vertical pipe 2 are both made of PVC. The two horizontal pipes 1 cover the horizontal area of ​​the stack, and the vertical pipe 2 extends to the vertical area of ​​the stack. The outer surface of the two horizontal pipes 1 is provided with several holes of diameter 1 5 at equal intervals, and the outer surface of the vertical pipe 2 is provided with several holes of diameter 2 6 at equal intervals. Gas can diffuse evenly into the stack through several holes of diameter 1 5 and holes of diameter 2 6. The left end of the left horizontal pipe 1 and the upper end of the vertical pipe 2 are both fitted with pipe caps of diameter 1 4 with interference fit, and the connection with the pipe caps of diameter 1 4 is sealed with sealant to block the pipe ports and prevent gas from leaking from non-working ports.

[0016] Sensors are pre-embedded inside the stack to monitor carbon dioxide concentration. The sensors are electrically connected to an external controller, which is in turn electrically connected to a pneumatic switch 35. When the concentration reaches the target value, the controller shuts off the pneumatic switch 35. If the concentration drops below the threshold, the controller restarts the pneumatic switch 35 to replenish the gas supply. Adjustment can be completed without disassembling the pipeline. Unless otherwise specified, the sensors, controller, and pneumatic switch 35 in this invention are obtained from conventional commercial channels or manufactured using conventional methods. Their specific structure, working principle, and possible control methods and spatial arrangements can be adopted using conventional choices in the field and should not be considered as the innovation of this invention. This is understandable to those skilled in the art, and this invention patent will not be further elaborated upon.

[0017] Working principle: During the storage and stacking process, the number of pipes is determined according to the stack length. Two horizontal ventilation pipes 1 and one vertical pipe 2 are arranged in an inverted "T" shape. Then, the inflation mechanism 3 is assembled and installed at the right end of the right horizontal pipe 1. The left end of the horizontal pipe 1 and the upper end of the vertical pipe 2 are sealed with pipe cap 4. Then, by opening the carbon dioxide gas source valve and turning on the pneumatic switch 35, the gas passes through the connecting gas pipe 34 to the internal thread straight pipe 32 and into the horizontal pipe 1. Part of it diffuses into the horizontal area of ​​the stack through the aperture 5, and the other part enters the vertical pipe 2 and diffuses into the vertical area of ​​the stack through the aperture 6. This effectively utilizes the strong targeting, precise and rapid insecticidal effect of carbon dioxide, and leverages the advantages of controlled atmosphere for small stacks with low airtightness, greatly improving the quality and efficiency of grain storage.

[0018] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A finished grain silo stack carbon dioxide modified atmosphere duct structure, characterized by, It includes two horizontal tubes (1), and an inflation mechanism (3) is provided on the outer right surface of the right horizontal tube (1). The inflation mechanism (3) includes a tube cap (31), an internal thread straight tube (32), an air pipe connector (33), and a pneumatic switch (35). A vertical pipe (2) is provided on the upper side of the two horizontal pipes (1). The two horizontal pipes (1) and the vertical pipe (2) are connected by a three-way pipe (7) and are distributed in an inverted T shape. The left end of the left horizontal pipe (1) and the upper end of the vertical pipe (2) are both sealed with a pipe cap (4).

2. A finished grain bin carbon dioxide CA pipe structure according to claim 1, wherein, The second tube cap (31) is sealed and snapped onto the right end of the horizontal tube (1). A connecting hole (311) is provided on the outer right side surface of the second tube cap (31). The left end of the internal thread straight tube (32) is sealed and bonded to the inner surface of the connecting hole (311).

3. A finished grain bin aeration duct structure according to claim 1, wherein, The inner surface of the right side of the internal thread straight connector (32) is provided with a threaded groove (321), and the outer surface of the left side of the air pipe connector (33) is provided with a threaded body (331), which is threadedly connected to the inner surface of the threaded groove (321).

4. A finished grain bin aeration duct structure as described in Claim 1 wherein, A connecting air pipe (34) is provided on the right side of the air pipe connector (33), and a sealing ring is provided between the air pipe connector (33) and the connecting air pipe (34).

5. A finished grain bin carbon dioxide CA pipe structure according to claim 1 wherein, The pneumatic switch (35) is connected to a connecting air pipe (34) on its left side. The connecting air pipe (34) is a flexible hose.

6. A finished grain bin carbon dioxide controlled atmosphere pipe structure as described in claim 1 wherein, The outer surfaces of the two horizontal tubes (1) are provided with several holes of diameter 1 (5) at equal intervals, and the outer surfaces of the vertical tubes (2) are provided with several holes of diameter 2 (6) at equal intervals.

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