Grain storage silo ventilation structure for improving ventilation air-conditioning effect

Abstract

The utility model discloses a grain storage silo ventilation structure capable of improving ventilation air conditioning effect, which comprises a ventilation ground groove arranged in a silo, an annular air duct and a first air inducing pipe, the annular air duct is arranged at the joint of the inner wall of the silo and the ground of the silo, and the first air inducing pipe is arranged in the ventilation ground groove. The annular air duct comprises a fixing support and a ventilation hole plate arranged on the fixing support, the ventilation hole plate is arranged in the length direction of the annular air duct, and first ventilation holes are formed in the ventilation hole plate; the two ends of the first air inducing pipe are connected to the annular air channel and the ventilation ground groove correspondingly so that the ventilation ground groove can communicate with the annular air channel. According to the ventilation structure, the annular air duct is arranged at the joint of the inner wall of the silo and the ground, and an independent air supply channel is directly formed for the silo wall area. Grain layers around the barn wall can obtain sufficient air quantity. The annular air duct is arranged along the barn wall, so that nitrogen can be directly injected into the marginal area of a grain pile through the ventilation hole plate, and the ventilation and air regulation effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of grain storage technology, and in particular to a ventilation structure for grain storage silos that improves ventilation and controlled atmosphere effects. Background Technology

[0002] To achieve ventilation and controlled atmosphere in grain storage silos, ventilation trenches are installed on the silo floor. However, in practical applications, traditional trench ventilation suffers from increased resistance as airflow diffuses towards the silo walls due to the grain, resulting in insufficient ventilation efficiency around the grain layer and creating ventilation dead zones at the silo walls. Furthermore, when using nitrogen-filled controlled atmosphere storage, dead zones exist at the silo walls and doors, making it difficult for nitrogen to penetrate and reach the effective insecticidal threshold. These dead zones become pest-prone areas, compromising grain safety. Utility Model Content

[0003] In view of this, this utility model proposes a ventilation structure for grain storage silos that improves ventilation and controlled atmosphere effects, with the aim of avoiding dead zones in ventilation and controlled atmosphere within the silos and improving the ventilation and controlled atmosphere effects.

[0004] The solution provided by this utility model includes:

[0005] A ventilation structure for improving the ventilation and controlled atmosphere effect of a grain storage silo includes a ventilation trough installed inside the silo, an annular air duct, and a first air intake pipe. The annular air duct is located at the junction between the inner wall of the silo and the silo floor. The annular air duct includes a fixed support and a ventilation perforated plate installed on the fixed support. The ventilation perforated plate is arranged along the length of the annular air duct and has a first ventilation hole. The two ends of the first air intake pipe are respectively connected to the annular air duct and the ventilation trough to realize the communication between the ventilation trough and the annular air duct.

[0006] As a further optional solution, the annular air duct is disconnected at the silo door position; the annular air duct also includes a ventilation end plate disposed at its end, the ventilation end plate being fixed on the fixed bracket, and the ventilation end plate being provided with a second ventilation hole.

[0007] As a further optional solution, the fixed bracket includes a vertical rod, a horizontal rod, a diagonal rod, a first connecting rod, and a second connecting rod;

[0008] The vertical rod is vertically installed on the inner wall of the silo, and the horizontal rod is horizontally installed on the silo floor, with the horizontal rod arranged radially along the annular air duct; the diagonal rod connects the vertical rod and the horizontal rod, and the diagonal rod, the vertical rod, and the horizontal rod form a triangular support structure;

[0009] The triangular support structure is provided in multiple parts along the length of the annular air duct. The first connecting rod and the second connecting rod are both provided along the length of the annular air duct. The first connecting rod is connected to the upper end of the inclined rod, and the second connecting rod is connected to the lower end of the inclined rod. The ventilation hole plate is connected to the inclined rod, the first connecting rod, and the second connecting rod.

[0010] As a further optional solution, the ventilation perforated plate and / or the ventilation end plate is a bridge-type perforated plate.

[0011] As a further alternative, the first air duct is pre-embedded below the silo floor.

[0012] As a further optional solution, an additional ventilation duct and a second air duct are also included. The additional ventilation duct is located inside the silo door, and the two ends of the second air duct are respectively connected to the additional ventilation duct and the ventilation ground duct to achieve communication between the additional ventilation duct and the ventilation ground duct.

[0013] As a further optional solution, the second air duct is pre-embedded below the silo floor.

[0014] As a further optional solution, the ventilation trench is connected to a ventilation duct.

[0015] Compared with existing technologies, the improved ventilation structure for grain storage silos proposed in this application has at least the following advantages:

[0016] This ventilation structure creates an independent air supply channel directly targeting the silo wall area by setting up a ring-shaped air duct at the junction of the silo's inner wall and the ground. Compared to the traditional ground-level ventilation system that diffuses air from the center above the ground, this ensures sufficient airflow to the grain layer around the silo wall. The ring-shaped air duct is designed along the silo wall, allowing nitrogen to be injected directly into the edge area of ​​the grain pile through ventilation perforations, improving the ventilation and controlled atmosphere effect. Attached Figure Description

[0017] Figure 1 This is a top view schematic diagram of a grain storage silo ventilation structure for improving ventilation and controlled atmosphere effect according to an embodiment of this utility model;

[0018] Figure 2 yes Figure 1 Enlarged view of A in the middle;

[0019] Figure 3 yes Figure 2 A side view of the structure shown;

[0020] Figure 4 yes Figure 1 Enlarged view of B in the middle;

[0021] Figure 5This is a schematic diagram of the connection between the ventilation trench and the ventilation duct in an embodiment of this utility model;

[0022] Figure 6 This is a front view of the annular air duct in an embodiment of this utility model;

[0023] Figure 7 yes Figure 6 The C-direction side view in the middle;

[0024] Figure 8 This is a schematic diagram of the structure of the ventilation end plate in an embodiment of this utility model;

[0025] In the diagram: 100, ventilation trench; 120, ventilation duct;

[0026] 200. Warehouse wall; 300. Warehouse door;

[0027] 1. Annular air duct; 11. Fixed bracket; 111. Vertical rod; 112. Horizontal rod; 113. Diagonal rod; 114. First connecting rod; 115. Second connecting rod; 12. Ventilation perforation plate; 121. First ventilation hole; 13. Ventilation end plate; 131. Second ventilation hole;

[0028] 2. First exhaust duct;

[0029] 3. Additional ventilation slots;

[0030] 4. Second air intake duct. Detailed Implementation

[0031] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0032] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0035] refer to Figure 1-8 This utility model provides an embodiment of a grain storage silo ventilation structure for improving ventilation and controlled atmosphere effects. It includes a ventilation trough 100 installed inside the silo, an annular air duct 1, and a first air intake pipe 2. The annular air duct 1 is located at the junction between the inner wall of the silo and the silo floor. The annular air duct 1 includes a fixed support 11 and a ventilation perforated plate 12 installed on the fixed support 11. The ventilation perforated plate 12 is arranged along the length of the annular air duct 1, and has a first ventilation hole 121. The two ends of the first air intake pipe 2 are respectively connected to the annular air duct 1 and the ventilation trough 100 to achieve communication between the ventilation trough and the annular air duct 1.

[0036] Specifically, the ventilation trough 100 is connected to an external ventilation device. During ventilation or controlled atmosphere operation, the gas inside the ventilation trough 100 can enter the annular air duct 1 through the first air intake pipe 2 and be released through the ventilation perforated plate 12 of the annular air duct 1, thus improving the problem of ventilation and controlled atmosphere dead zones that easily exist around the silo wall 200 in traditional silos. In this way, this ventilation structure, by setting the annular air duct 1 at the junction of the silo inner wall and the ground, directly forms an independent air supply channel for the area of ​​the silo wall 200. Compared to the traditional trough's air supply mode that diffuses from the center above the ground, this ensures that the grain layer around the silo wall 200 receives sufficient airflow. The annular air duct 1 is designed along the silo wall 200, allowing nitrogen to be directly injected into the edge area of ​​the grain pile through the ventilation perforated plate 12, improving the ventilation and controlled atmosphere effect.

[0037] In some embodiments, such as Figure 1 , Figure 4 as well as Figure 8 As shown, the annular air duct 1 is disconnected at the silo door 300 position; the annular air duct 1 also includes a ventilation end plate 13 disposed at its end, the ventilation end plate 13 is fixed on the fixed bracket 11, and the ventilation end plate 13 is provided with a second ventilation hole 131.

[0038] In this way, the gas in the annular air duct 1 can also be released from the second ventilation hole on the ventilation end plate 13 to avoid the presence of a dead zone in the ventilation and atmosphere control near the door 300.

[0039] Specifically, the first ventilation hole and the second ventilation hole are preferably bridge-type holes (or fish-scale holes), and their diameter is designed to prevent grain leakage; correspondingly, the ventilation hole plate 12 and the ventilation end plate 13 are bridge-type hole plates (or fish-scale hole plates).

[0040] In some embodiments, such as Figure 6 and Figure 7 As shown, the fixed support 11 includes a vertical rod 111, a horizontal rod 112, an inclined rod 113, a first connecting rod 114, and a second connecting rod 115. The vertical rod 111 is vertically installed on the inner wall of the silo, and the horizontal rod 112 is horizontally installed on the silo floor, with the horizontal rod 112 arranged radially along the annular air duct 1. The inclined rod 113 connects the vertical rod 111 and the horizontal rod 112, and the inclined rod 113, the vertical rod 111, and the horizontal rod 112 form a triangular support structure. Multiple triangular support structures are arranged along the length of the annular air duct 1. The first connecting rod 114 and the second connecting rod 115 are both arranged along the length of the annular air duct 1. The first connecting rod 114 is connected to the upper end of the inclined rod 113, and the second connecting rod 115 is connected to the lower end of the inclined rod 113. The ventilation plate 12 is connected to the inclined rod 113, the first connecting rod 114, and the second connecting rod 115.

[0041] The vertical rod 111, horizontal rod 112, diagonal rod 113, first connecting rod 114, and second connecting rod 115 are made of flat steel or angle steel. The diagonal rod 113, vertical rod 111, and horizontal rod 112 form a triangular support structure to ensure the structural stability of the fixed bracket 11 and to ensure stable support for the ventilation hole plate 12. In this embodiment, the ventilation hole plate 12 is fixed to the diagonal rod 113, first connecting rod 114, and second connecting rod 115 by bolts. The ventilation end plate 13 is fixed to the triangular support structure formed by the diagonal rod 113, vertical rod 111, and horizontal rod 112 by bolts.

[0042] In some embodiments, such as Figure 3 As shown, the first air duct 2 is pre-embedded below the silo floor. This prevents the first air duct 2 from affecting the grain stored on the ground. In addition, multiple first air ducts 2 are provided to improve the uniformity of airflow within the annular air duct 1, thereby improving the ventilation and atmosphere control effect.

[0043] In some embodiments, to further improve the ventilation and air conditioning effect near the door 300, such as Figure 1 and Figure 4As shown, it also includes an additional ventilation duct 3 and a second air duct 4. The additional ventilation duct 3 is located inside the silo door 300. The two ends of the second air duct 4 are respectively connected to the additional ventilation duct 3 and the ventilation ground duct 100 to realize the connection between the additional ventilation duct 3 and the ventilation ground duct 100.

[0044] In this embodiment, the ventilation duct 100 transmits gas to the auxiliary ventilation duct 3 via the second air duct 4. The auxiliary ventilation duct 3 is located near the door 300 and can directly release gas, improving the ventilation and controlled atmosphere effect. In this embodiment, the auxiliary ventilation duct 3 is 50mm wide and 100mm deep, and a perforated galvanized steel plate is installed on the top of the ventilation duct. The ventilation principle of the auxiliary ventilation duct 3 is the same as that of the ventilation duct 100, but the auxiliary ventilation duct 3 is smaller in size and easier to modify and install.

[0045] Preferably, the second air duct 4 is pre-embedded below the silo floor. This prevents the second air duct 4 from affecting the grain stored on the ground.

[0046] In some embodiments, such as Figure 5 As shown, the ventilation trench 100 is connected to a ventilation duct 120. The ventilation trench 100 is connected to an external ventilation device (not shown) via the ventilation duct 120; the ventilation device introduces gas into the ventilation trench 100 through the ventilation duct 120.

[0047] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0048] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A ventilation structure for grain silos to improve ventilation and controlled atmosphere, comprising a ventilation trough installed inside the silo, characterized in that, It also includes an annular air duct and a first exhaust pipe. The annular air duct is located at the junction between the inner wall of the silo and the silo floor. The annular air duct includes a fixed support and a ventilation perforated plate disposed on the fixed support. The ventilation perforated plate is disposed along the length of the annular air duct and has a first ventilation hole. The two ends of the first exhaust pipe are respectively connected to the annular air duct and the ventilation trench to realize the communication between the ventilation trench and the annular air duct.

2. The grain storage silo ventilation structure for improving ventilation and controlled atmosphere effect according to claim 1, characterized in that, The annular air duct is disconnected at the silo door; the annular air duct also includes a ventilation end plate at its end, the ventilation end plate is fixed on the fixed bracket, and the ventilation end plate is provided with a second ventilation hole.

3. The grain storage silo ventilation structure for improving ventilation and controlled atmosphere effect according to claim 2, characterized in that, The fixed bracket includes a vertical rod, a horizontal rod, a diagonal rod, a first connecting rod, and a second connecting rod; The vertical rod is vertically installed on the inner wall of the silo, and the horizontal rod is horizontally installed on the silo floor, with the horizontal rod arranged radially along the annular air duct; the diagonal rod connects the vertical rod and the horizontal rod, and the diagonal rod, the vertical rod, and the horizontal rod form a triangular support structure; The triangular support structure is provided in multiple parts along the length of the annular air duct. The first connecting rod and the second connecting rod are both provided along the length of the annular air duct. The first connecting rod is connected to the upper end of the inclined rod, and the second connecting rod is connected to the lower end of the inclined rod. The ventilation hole plate is connected to the inclined rod, the first connecting rod, and the second connecting rod.

4. The grain storage silo ventilation structure for improving ventilation and controlled atmosphere effect according to claim 3, characterized in that, The ventilation perforated plate and / or the ventilation end plate are bridge-type perforated plates.

5. The grain storage silo ventilation structure for improving ventilation and controlled atmosphere effect according to claim 1, characterized in that, The first exhaust pipe is embedded below the silo floor.

6. The grain storage silo ventilation structure for improving ventilation and controlled atmosphere effect according to claim 2, characterized in that, It also includes an additional ventilation duct and a second air duct. The additional ventilation duct is located inside the silo door. The two ends of the second air duct are connected to the additional ventilation duct and the ventilation ground duct, respectively, so as to realize the connection between the additional ventilation duct and the ventilation ground duct.

7. The grain storage silo ventilation structure for improving ventilation and controlled atmosphere effect according to claim 6, characterized in that, The second exhaust pipe is pre-embedded below the silo floor.

8. The grain storage silo ventilation structure for improving ventilation and controlled atmosphere effect according to any one of claims 1-7, characterized in that, The ventilation trench is connected to a ventilation duct.

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