Corn storage mildew-proof ventilation equipment

Abstract

This utility model relates to the technical field of grain storage equipment, specifically to a corn storage anti-mold ventilation device, including a fan. An air inlet seat is rotatably installed at the output end of the fan. The outer ring wall of the air inlet seat is connected to several air inlet ducts with adjustable spacing from the air inlet seat. Each air inlet duct has an air inlet assembly connected to its bottom. The air inlet assembly includes a first air duct fixedly connected to the bottom of the air inlet duct, and a second air duct fitted onto the bottom of the first air duct with an adjustable insertion depth. This utility model allows for free stretching or compression of the air ducts according to the corn pile height (e.g., adjusted to 1.5m or 3m), ensuring uniform air pressure coverage of the entire pile. The locking method between the threaded ring and the threaded cylinder is simple to operate, requiring no tools for fixing, avoiding the problem of easy loosening of traditional clips. The air inlet ducts slide along the air inlet pipe to adjust the spacing (e.g., 0.5-1.2m) to adapt to different storage width requirements. The fixing screws press against the air inlet pipe to achieve rapid locking, preventing displacement caused by airflow vibration.

Description

Technical Field

[0001] This utility model relates to the technical field of grain storage equipment, specifically to a ventilation device for preventing mold growth in corn storage. Background Technology

[0002] Mold growth is a major cause of grain loss during corn storage, primarily due to excessively high humidity and uneven ventilation in the storage environment. Existing ventilation equipment suffers from the following drawbacks:

[0003] Fixed duct structure: Traditional ducts have fixed length and air inlet position, which cannot adapt to the ventilation needs of corn piles with different heights (such as 2-5 meters) or different densities, resulting in local ventilation dead corners and easy formation of moldy areas.

[0004] Single air intake mode: Most equipment uses centralized air supply from the top, and the air pressure decreases significantly with distance, resulting in poor ventilation for the corn at the bottom.

[0005] Adjustment difficulties: Some adjustable air ducts rely on complex mechanical structures (such as hydraulic lifting), which are costly and inconvenient to maintain, making them difficult to promote in small and medium-sized grain warehouses. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a ventilation device for preventing mold growth in corn storage. Through an adjustable duct and air inlet structure, it achieves dual adjustment of duct height and air inlet spacing, significantly improving ventilation uniformity.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] This utility model provides a ventilation device for preventing mold growth in corn storage, including a fan. An air inlet seat is rotatably mounted on the output end of the fan. The outer ring wall of the air inlet seat is connected to several air inlet ducts with adjustable spacing from the air inlet seat. Each of the air inlet ducts has an air inlet assembly connected to its bottom.

[0009] The air intake assembly includes a first air duct fixedly connected to the bottom of the air intake duct, and a second air duct fitted at the bottom of the first air duct and whose insertion depth with the first air duct is adjustable.

[0010] Furthermore, the output end of the fan is fixedly connected to a connecting pipe, and an annular limiting groove is provided at the bottom of the connecting pipe.

[0011] According to the corn storage anti-mildew ventilation equipment as claimed in claim, the top of the air inlet seat is fixedly installed with an annular limiting member, and the annular limiting member is rotatably installed in the annular limiting groove.

[0012] Furthermore, several air inlet pipes are vertically fixedly installed on the outer wall of the air inlet seat. The several air inlet pipes are slidably inserted into the corresponding air inlet cylinders. The bottom of each of the several air inlet cylinders is threaded with a fixing screw. The screw head is threaded through and extends into the air inlet cylinder, and presses against the air inlet pipe.

[0013] Furthermore, each of the first air ducts and the corresponding second air ducts is composed of a number of inner rings and vertical strips. The number of inner rings are placed horizontally and are distributed parallel to each other at equal intervals. The number of vertical strips are fixedly installed vertically and at equal intervals on the outer ring wall of the number of inner rings.

[0014] Furthermore, a connecting ring is fixedly installed at the bottom of each of the first air ducts, a threaded cylinder is fixedly installed at the bottom of each of the connecting rings, a threaded ring is fixedly installed at the top of each of the second air ducts, and the threaded cylinders are respectively threaded into the corresponding threaded rings.

[0015] The technical solution provided by this utility model has the following advantages compared with the known prior art:

[0016] Height is highly flexible and adjustable:

[0017] With the interlocking design of the first and second air ducts, users can freely stretch or compress the air ducts according to the height of the corn pile (such as adjusting to 1.5m or 3m) to ensure that the air pressure evenly covers the entire pile layer.

[0018] The locking method between the threaded ring and the threaded cylinder is simple to operate and can be fixed without tools, avoiding the problem of easy loosening of traditional buckles.

[0019] Adaptive air intake range:

[0020] The air inlet duct can be slidably adjusted along the air inlet pipe (e.g., 0.5-1.2m) to adapt to different storage width requirements. The fixing screws press the air inlet pipe to achieve quick locking and avoid displacement caused by airflow vibration. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the rotating installation structure of the air inlet seat and the fan of this utility model;

[0024] Figure 3 This is a schematic diagram of the locking and fixing structure of the air inlet duct and air inlet pipe of this utility model;

[0025] Figure 4 This is a schematic diagram of the air intake component structure of this utility model.

[0026] The labels in the diagram represent:

[0027] 1. Fan; 11. Connecting pipe; 12. Annular limiting groove;

[0028] 21. Air inlet base; 22. Annular limiting component; 23. Air inlet pipe; 24. Air inlet tube; 25. Fixing screw;

[0029] 31. First air duct; 32. Second air duct; 33. Connecting ring; 34. Threaded cylinder; 35. Threaded ring. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0031] The present invention will be further described below with reference to the embodiments. Example 1:

[0032] Reference Figure 1-4 This first embodiment of the present invention discloses a ventilation device for preventing mold growth in corn storage, including a fan 1 (power 1.5kW, air volume 3000m³ / h). An air inlet seat 21 (outer diameter Φ250mm, height 200mm) is rotatably mounted on the output end of the fan 1 via a flange. Four to six air inlet ducts 24 (diameter Φ100mm, length 500-800mm adjustable) are evenly distributed on the outer ring wall of the air inlet seat 21. The distance between the air inlet ducts 24 and the air inlet seat 21 is adjustable from 300-500mm. An air inlet assembly is connected to the bottom of each air inlet duct 24.

[0033] The air intake assembly includes a first air duct 31 (1000mm in length, Φ120mm in diameter, and 2mm in wall thickness) fixedly connected to the bottom of the air intake duct 24, and a second air duct 32 (1500mm in length, Φ125mm in diameter, and 2mm in wall thickness) fitted at the bottom of the first air duct 31 and whose insertion depth with the first air duct 31 is adjustable. The two are fitted with a clearance of 1-1.5mm and the adjustment stroke is 600-800mm.

[0034] The first air duct 31 and the second air duct 32 are both made of Q235 steel and have been treated with anti-rust coating. The air inlet seat 21 is made of aluminum alloy casting and its weight is controlled within 15kg. All connection parts are sealed with rubber rings to ensure airtightness and that the air leakage rate does not exceed 5%. Example 2:

[0035] Reference Figure 1-4 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that: the output end of the fan 1 is fixedly connected to a connecting pipe 11 (pipe diameter Φ200mm, wall thickness 3mm), and an annular limiting groove 12 (groove width 15mm, groove depth 10mm) is opened at the bottom of the connecting pipe 11. An annular limiting member 22 (thickness 8mm) is fixedly installed on the top of the air inlet seat 21 (outer diameter Φ180mm, height 150mm). The annular limiting member 22 is rotatably installed in the annular limiting groove 12, and the gap between the two is 0.5-1mm.

[0036] The outer wall of the air inlet seat 21 is vertically fixed with 6-8 air inlet pipes 23 (diameter Φ80mm, length 300-500mm adjustable). Several air inlet pipes 23 are slidably inserted into the corresponding air inlet cylinder 24 (length 400-600mm). The sliding adjustment range is 200-300mm. The bottom of several air inlet cylinders 24 are threaded with fixing screws 25 (M6 specification). The screw head of the fixing screw 25 is threaded through and extends into the air inlet cylinder 24, and presses against the air inlet pipe 23. The locking torque is 5-8N·m.

[0037] Several first air ducts 31 (standard length 800mm, diameter Φ100mm) and corresponding second air ducts 32 (standard length 1200mm, diameter Φ105mm) are each composed of 5-8 inner rings (ring spacing 150mm, thickness 2mm) and 12-16 vertical strips (width 10mm, thickness 2mm). The inner rings are placed horizontally and are evenly spaced and parallel to each other. The vertical strips are vertically and evenly spaced (80-100mm apart) and fixedly installed on the outer rings of the inner rings. On the wall, a number of first air ducts 31 are fixedly installed with connecting rings 33 (height 30mm) at their bottoms, and a number of connecting rings 33 are fixedly installed with threaded cylinders 34 (length 50mm, M45×2 thread specification) at their bottoms. A number of second air ducts 32 are fixedly installed with threaded rings 35 (height 40mm, internal thread M45×2). A number of threaded cylinders 34 are respectively threaded into the corresponding threaded rings 35, with a thread engagement length of not less than 30mm, which can achieve a height adjustment range of 300-500mm.

[0038] The remaining structure is the same as that in Example 1.

[0039] In actual operation, the corn storage anti-mold ventilation equipment of this utility model uses a fan 1 to drive airflow and, with the help of an adjustable air inlet duct 24 and a telescopic air duct structure, achieves uniform ventilation of the corn storage environment. The specific working process is as follows:

[0040] 1. Equipment startup and airflow delivery

[0041] After the fan 1 is started, the airflow enters the air inlet seat 21 through the connecting pipe 11.

[0042] The air inlet seat 21 is rotatably connected to the annular limiting groove 12 of the connecting pipe 11 through the annular limiting member 22, ensuring that the air inlet seat 21 can rotate freely and avoid the twisting of the air duct.

[0043] 2. Adjustment of the spacing of the air inlet duct 24

[0044] Several air inlet pipes 23 are fixedly installed on the outer wall of the air inlet seat 21, and each air inlet pipe 23 is slidably inserted into the corresponding air inlet duct 24.

[0045] When it is necessary to adjust the spacing of the air inlet duct 24 to accommodate different storage widths, the fixing screws 25 can be loosened to allow the air inlet duct 24 to slide along the air inlet pipe 23 to the target position (such as 0.5m, 0.8m or 1.2m).

[0046] After adjustment, tighten the fixing screw 25 so that the screw head presses against the air inlet pipe 23 to achieve a stable fixation of the air inlet duct 24.

[0047] 3. Adjustment of duct height

[0048] Each air inlet duct 24 has a retractable air inlet assembly connected to its bottom, including a first air duct 31 and a second air duct 32.

[0049] The first air duct 31 is fixed at the bottom of the air inlet duct 24, and the second air duct 32 is fitted below the first air duct 31. The two are connected by plugging to achieve height adjustment.

[0050] When the overall height of the duct needs to be adjusted, rotate the second duct 32 so that the threaded ring 35 at its top separates from the threaded cylinder 34 at the bottom of the first duct 31, and then stretch or compress the second duct 32 to the required height (such as 1.5m, 2m or 3m).

[0051] After adjustment, rotate the threaded ring 35 in the opposite direction to re-thread it to the threaded cylinder 34 to ensure that the second air duct 32 is firmly fixed.

[0052] 4. Uniform airflow diffusion

[0053] The airflow is split from the air inlet seat 21 to each air inlet duct 24, and then transported downward through the first air duct 31 and the second air duct 32.

[0054] The first duct 31 and the second duct 32 adopt a grid structure, which consists of an inner ring and vertical strips. This structure can ensure structural strength, reduce wind resistance, and improve airflow penetration.

[0055] The airflow eventually diffuses evenly from the air outlet at the bottom of the second air duct 32 to the corn pile, ensuring that each layer of corn can receive sufficient ventilation and avoiding excessive local humidity that could lead to mold growth.

[0056] 5. Adapt to different warehousing needs

[0057] For high-humidity storage environments, the height of the air ducts can be appropriately increased (e.g., the second air duct 32 can be fully extended to a maximum of 3m) and the spacing of the air inlet ducts 24 can be widened (e.g., 1m) to enhance the ventilation effect at the bottom.

[0058] For small warehouses or low stacking situations, the height of the air ducts can be shortened and the spacing of the air inlet ducts can be reduced to improve the concentration of air supply.

[0059] 6. Energy saving and mildew prevention effects

[0060] Since both the duct height and the air inlet spacing are adjustable, the airflow distribution is more uniform, avoiding the problem of air pressure attenuation in traditional fixed ventilation equipment.

[0061] The grid-like duct structure reduces wind resistance and energy consumption of fan 1, saving approximately 20% energy compared to traditional single-point air supply methods.

[0062] By precisely adjusting the ventilation range, the humidity difference between different layers of the corn pile can be controlled within ±3%, significantly reducing the risk of mold growth.

[0063] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A ventilation device for preventing mold growth in corn storage, characterized in that, Includes a fan (1), the output end of which is rotatably mounted with an air inlet seat (21). The outer ring wall of the air inlet seat (21) is connected to a plurality of air inlet ducts (24) with adjustable spacing from the air inlet seat (21). The bottom of each of the plurality of air inlet ducts (24) is connected to an air inlet assembly. The air intake assembly includes a first air duct (31) fixedly connected to the bottom of the air intake duct (24), and a second air duct (32) fitted at the bottom of the first air duct (31) and whose insertion depth with the first air duct (31) is adjustable.

2. The corn storage anti-mold ventilation equipment according to claim 1, characterized in that, The output end of the fan (1) is fixedly connected to a connecting pipe (11), and an annular limiting groove (12) is provided at the bottom of the connecting pipe (11).

3. The corn storage anti-mold ventilation equipment according to claim 2, characterized in that, An annular limiting member (22) is fixedly installed on the top of the air inlet seat (21), and the annular limiting member (22) is rotatably installed in the annular limiting groove (12).

4. The corn storage anti-mold ventilation equipment according to claim 1, characterized in that, The outer wall of the air inlet seat (21) is vertically fixed with several air inlet pipes (23). The several air inlet pipes (23) are slidably inserted into the corresponding air inlet cylinders (24). The bottom of each of the several air inlet cylinders (24) is threaded with a fixing screw (25). The screw head of the fixing screw (25) is threaded through and extends into the air inlet cylinder (24), and presses against the air inlet pipe (23).

5. A corn storage ventilation device for preventing mold growth according to claim 1, characterized in that, Each of the first air ducts (31) and the corresponding second air ducts (32) consists of a number of inner rings and vertical strips. The inner rings are placed horizontally and are distributed parallel to each other at equal intervals. The vertical strips are fixedly installed vertically and at equal intervals on the outer ring wall of the inner rings.

6. The corn storage anti-mold ventilation equipment according to claim 1, characterized in that, A connecting ring (33) is fixedly installed at the bottom of each of the first air ducts (31), a threaded cylinder (34) is fixedly installed at the bottom of each of the connecting rings (33), a threaded ring (35) is fixedly installed at the top of each of the second air ducts (32), and the threaded cylinders (34) are respectively threaded into the corresponding threaded rings (35).

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