air corn crib

Abstract

This application relates to the technical field of corn drying, and in particular to a corn drying silo, comprising a silo body surrounded by a ventilation net, the upper end of the silo body being open and the lower end having a discharge port with a gate installed at the discharge port; further comprising: a central ventilation pipe, vertically arranged at the central axis of the silo body, with multiple first ventilation holes on its side wall; multiple side ventilation pipes, arranged around the central axis of the silo body and extending to the bottom of the silo body, with multiple second ventilation holes on their side walls; and a ventilation mechanism, located outside the silo body and communicating with the side ventilation pipes for ventilating the side ventilation pipes. This application has the effect of improving ventilation efficiency.

Description

Technical Field

[0001] This application relates to the technical field of corn drying, and in particular to a corn drying silo. Background Technology

[0002] Post-harvest storage of corn is a crucial link in ensuring food security. Air-drying grain silos, as an important on-site storage and natural drying facility, are widely used due to their simple structure and low cost. Existing air-drying grain silos typically employ a cylindrical, three-dimensional structure welded from metal mesh or steel bars. Their walls are riddled with ventilation holes, and their drying principle primarily relies on natural wind penetrating horizontally through the grain layer from all sides of the silo walls, carrying away moisture from the kernels.

[0003] However, these traditional air-drying grain silos have significant technical drawbacks: First, their ventilation relies entirely on external natural wind, resulting in extremely low or even stopped drying efficiency in windless or lightly windy conditions. Second, and more critically, due to the significant resistance of the grain pile itself to airflow, the wind pressure decreases from the periphery towards the central core area, leaving the corn in the center a constant ventilation blind spot. External airflow cannot effectively penetrate to the core of the grain silo, causing hot and humid air to accumulate in this area, easily leading to a "stuffy core" phenomenon. This, in turn, causes localized heating and mold growth on the corn cobs, resulting in a decline in grain quality and even significant losses. Utility Model Content

[0004] This application provides a corn drying silo, which can at least partially solve the above-mentioned technical problems.

[0005] This application provides a corn drying silo, which adopts the following technical solution: A corn drying silo includes a silo body surrounded by a ventilation mesh, the upper end of the silo body being open and the lower end having a discharge port equipped with a gate; it also includes: The central ventilation duct is vertically installed at the central axis of the silo, and multiple first ventilation holes are provided on the side wall; Multiple side ventilation pipes are provided, arranged around the central axis of the silo body and extending to the bottom of the silo body, and multiple second ventilation holes are provided on the side wall; A ventilation mechanism is located on the outside of the chamber and is connected to the side ventilation pipe for ventilating the side ventilation pipe.

[0006] By adopting the above technical solution, a central ventilation duct is vertically installed at the center of the silo, and multiple side ventilation ducts are installed around it. All ducts have ventilation holes on their side walls. A ventilation mechanism (such as a fan) is installed on the outside of the silo, and its outlet is connected to the side ventilation ducts. During operation, the ventilation mechanism is activated, and airflow is forced into the side ventilation ducts, flowing out through the second ventilation hole and into the grain pile. Simultaneously, natural air enters the central ventilation duct and flows out through the first ventilation hole. Thus, airflow is simultaneously delivered to the surrounding grain layer from multiple points on the sides and center of the grain silo, forming a three-dimensional, composite ventilation path from the inside out and from the outside in. By setting up a central ventilation duct, the airflow is directly guided to the core area of ​​the grain silo, completely breaking the traditional problem of "stuffy core" grain silos, allowing the corn in the center to be effectively dried. Active forced ventilation improves efficiency: a stable air source is provided by an external ventilation mechanism, overcoming the complete dependence on natural wind, and continuous operation can be carried out even in windless weather, significantly improving drying efficiency and reliability. The side ventilation ducts and the central ventilation duct form a three-dimensional ventilation network, with airflow entering the grain pile from multiple directions and depths, making ventilation more uniform throughout the grain pile and reducing the risk of excessive local moisture or mold.

[0007] Optionally, it also includes a connecting ring pipe and a connecting fork pipe, wherein multiple side ventilation pipes are connected into a whole through the connecting ring pipe, and the central ventilation pipe is connected to the connecting ring pipe through the connecting fork pipe.

[0008] By adopting the above technical solution, during installation, a connecting ring pipe is first used to connect the tops of all the side ventilation pipes, forming a stable ring frame. Then, connecting fork pipes are used to connect the tops of the central ventilation pipes to the connecting ring pipe. In this way, the entire ventilation pipe network forms a connected integral frame at the top of the silo; the ring pipe and fork pipe connect the dispersed central and side ventilation pipes into a robust frame structure, improving the rigidity and stability of the entire grain silo top structure and enabling it to better withstand the lateral pressure of the grain pile.

[0009] Optionally, both the connecting ring pipe and the connecting fork pipe are provided with multiple third ventilation holes. The connecting ring pipe is connected to the side ventilation pipe, and the connecting fork pipe is connected to the connecting ring pipe and the central ventilation pipe.

[0010] By adopting the above technical solution, ventilation holes are also processed on the pipe walls of the connecting ring pipe and the connecting fork pipe. When the airflow flows through these pipes, part of it will overflow directly from these third ventilation holes, and the gas will ventilate the center through the central ventilation pipe, improving the ventilation effect. The addition of top ventilation points eliminates dead corners at the top, as the corners at the top of the grain silo are another area where humid and hot air tends to accumulate. By opening holes in the ring pipe and the fork pipe, the airflow can directly ventilate these areas, forming a full-coverage ventilation network from the core of the silo, the sides to the top. Combined with the air supply ventilation to the central ventilation pipe, the uniformity of ventilation is further improved.

[0011] Optionally, the first ventilation hole, the second ventilation hole, and the third ventilation hole are all elongated.

[0012] By adopting the above technical solution, compared with round holes, elongated holes are less likely to be completely blocked by corn kernels. Even if some holes are blocked, sufficient ventilation area can still be guaranteed, ensuring the long-term effectiveness and reliability of the ventilation system. Elongated holes can provide a larger total air outlet area and allow airflow to enter the grain pile in a more dispersed and gentler manner, which helps to achieve more thorough heat and moisture exchange with the grain.

[0013] Optionally, the ventilation mechanism includes a fan and ducts, the number of ducts corresponding to the number of side ventilation ducts, and the air outlet of the fan is connected to the ducts.

[0014] By adopting the above technical solution, the ventilation mechanism uses a fan in conjunction with ductwork. The number of fans can be one, connected to each branch duct through a main duct and a distribution valve; or multiple fans can be connected to multiple ducts respectively. After the fan is started, the airflow is directly delivered to the corresponding side ventilation duct through the ductwork, providing a stable and reliable air source to ensure the feasibility and effectiveness of forced ventilation. The fans are set on the outside of the chamber, which is convenient for installation, inspection and maintenance, and avoids sealing and corrosion problems that may occur when placed inside the chamber.

[0015] Optionally, the bottom of the silo is a conical bottom that converges towards the center, the discharge port is located at the lowest point of the conical bottom, and an opening and closing mechanism is installed at the conical bottom. The opening and closing mechanism is connected to the gate and is used to drive the gate to close or open the discharge port.

[0016] By adopting the above technical solution, the bottom of the silo is made into a cone shape, and the grain naturally gathers towards the central discharge port due to gravity. When discharge is needed, the gate is opened by operating the opening and closing mechanism, and the grain can flow out from the discharge port. The cone-shaped bottom structure utilizes gravity to allow the grain to flow out almost completely by itself, without the need for manual cleaning of residues, which greatly reduces labor intensity and harvest losses.

[0017] Optionally, the opening and closing mechanism includes a slide rail, a rotating screw, a rotating head, and a slider. The slide rail is disposed perpendicular to the axis of the chamber body on one side of the conical bottom. A groove is formed on the side of the slide rail near the ground. The slider is slidably connected in the groove and is connected to the gate. The rotating screw rotates on the inner wall of the groove and is threadedly connected to the slider. The rotating head is disposed at one end of the rotating screw.

[0018] By adopting the above technical solution, the rotating head of the sleeve installed by the electric wrench drives the rotating screw to rotate. Since the screw and the slider are connected by a thread, the slider moves horizontally in the groove, thereby driving the gate connected to the slider to open or close the discharge port. The screw and nut mechanism has the characteristics of saving effort, self-locking and precise control of opening. The operator can easily control the opening and closing of the large gate with very little force and can precisely control the opening size to adjust the discharge flow. This structure can ensure that the gate is tightly closed and prevent grain leakage or rainwater intrusion during storage.

[0019] Optionally, the central ventilation duct is located above the discharge port and is located away from the discharge port via a suspension.

[0020] By adopting the above technical solution, the lower end of the central ventilation pipe does not directly contact the discharge port. Instead, it is fixed to the top or side wall of the silo by a suspension, so that its bottom end is suspended in the air. This reduces the direct impact, accumulation, or even blockage of the bottom opening and the lowest ventilation hole of the central ventilation pipe by grain and impurities during discharge, ensuring that the ventilation pipe is always unobstructed. This ensures a smooth discharge process, and the ventilation pipe will not obstruct the flow of grain.

[0021] Optionally, two guide plates are inclinedly arranged on the discharge port, and the inclination angle of the two guide plates is greater than the inclination angle of the conical bottom.

[0022] By adopting the above technical solution, two guide plates with a larger inclination angle are installed below the discharge port. The flowing grain will first fall onto the guide plates and then be guided to a more peripheral area (such as a transport vehicle or hopper), preventing the grain from accumulating directly below the discharge port. The guide plates can guide the falling grain in a predetermined direction, preventing it from scattering everywhere and making it convenient to use containers to catch it, thus improving the cleanliness and efficiency of the discharge operation.

[0023] Optionally, an inspection port is provided on the side wall of the silo, and an inspection door is rotatably connected to the inspection port.

[0024] By adopting the above technical solution, an inspection port with a door is opened on the side wall of the silo. When it is necessary to check the internal condition, clean or maintain, the operation can be carried out by opening the inspection door without having to enter from the top. This provides a convenient maintenance passage, which greatly facilitates users to conduct daily inspections and necessary cleaning and maintenance of the grain condition and ventilation pipe operation in the silo, and improves the maintainability of the equipment and the user experience.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. The side ventilation pipes and the central ventilation pipes form a three-dimensional ventilation network, allowing airflow to enter the grain pile from multiple directions and depths, making ventilation more uniform throughout the grain pile and reducing the risk of excessive local moisture or mold. 2. Provide a stable and reliable air source to ensure the feasibility and effectiveness of forced ventilation; the fan is located on the outside of the chamber, which facilitates installation, inspection and maintenance, and avoids problems such as sealing and corrosion that may occur when placed inside the chamber; 3. The guide plate can guide the falling grain in a predetermined direction, preventing it from scattering everywhere, making it convenient to use a container to catch it, and improving the cleanliness and efficiency of the discharge operation. Attached Figure Description

[0026] Figure 1 This is an overall structural diagram of the air-dried corn silo in the embodiments of this application; Figure 2 This is a diagram illustrating the conical bottom in an embodiment of this application; Figure 3 This is a partial structural diagram of the opening and closing mechanism in the embodiments of this application; Figure 4 This is a diagram showing the opening and closing mechanism from another perspective in an embodiment of this application; Figure 5 This is a diagram showing the positions of the central ventilation duct and the side ventilation duct in an embodiment of this application.

[0027] Reference numerals: 100, bin body; 110, discharge port; 120, conical bottom; 200, gate; 300, central ventilation pipe; 310, first ventilation hole; 400, side ventilation pipe; 410, second ventilation hole; 610, connecting ring pipe; 620, connecting fork pipe; 630, third ventilation hole; 640, suspension; 650, guide plate; 700, opening and closing mechanism; 710, slide rail; 711, chute; 720, rotating screw; 730, rotating head; 740, slider. Detailed Implementation

[0028] The following combination Figures 1 to 5 This application will be described in further detail.

[0029] This embodiment discloses a corn drying silo. The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0030] Reference Figures 1 to 5 This embodiment provides a corn drying silo, which includes a silo body 100, a central ventilation pipe 300, side ventilation pipes 400, a top connecting pipe, and an external ventilation mechanism, forming an active forced ventilation system. In use, a fan forces dry air into the ventilation network, and the airflow permeates the grain pile in a multi-directional and uniform manner through ventilation holes distributed throughout the core, sides, and top of the silo, achieving efficient three-dimensional drying of the corn. When discharge is required, the gate 200 is opened, and the grain automatically flows out through the discharge port 110 of the silo body 100 under gravity.

[0031] The silo body 100 is a cylindrical structure formed by perforated metal plates or metal mesh. Its walls are perforated to allow for circumferential ventilation; in this embodiment, a ventilation mesh with square mesh openings is preferred. The upper end of the silo body 100 is open for loading corn cobs. A conical bottom 120, converging towards the center, is welded to the bottom. The conical bottom 120 is made of ventilation mesh and fixed with square steel. The inclination angle of the conical bottom 120 is designed to be 15 degrees to ensure that the corn cobs can roll along the conical bottom 120. A hexagonal discharge port 110 is located at the center of the lowest point of the conical bottom 120.

[0032] The central ventilation duct 300 is a large-diameter metal pipe with several radially distributed steel pipes installed at its top, fixing the metal pipe to the central axis of the silo 100. Its bottom end is higher than the discharge port 110, so it is suspended and equipped with a suspension 640. The suspension 640 includes four inclined circular pipes, one end of which is connected to the central ventilation duct 300, and the other end is connected to the side wall of the discharge port 110, reducing the risk of clogging the discharge port 110 during discharge. Several elongated first ventilation holes 310 are densely distributed on the pipe wall from top to bottom, and adjacent first ventilation holes 310 are staggered along the circumference of the central ventilation duct 300.

[0033] The side ventilation pipe 400 is provided with three metal pipes (which can be increased or decreased according to the size of the hopper 100) with a diameter slightly smaller than that of the central ventilation pipe 300. They are evenly distributed in a circle with the central ventilation pipe 300 as the center, and extend to a position close to the conical bottom 120, and extend through the conical bottom 120 to the outside of the hopper 100. Each side ventilation pipe 400 also has a long strip-shaped second ventilation hole 410 on its pipe wall.

[0034] It also includes a horizontally arranged annular connecting pipe 610, which is divided into three sections, with each end inserted into two adjacent side ventilation pipes 400, and the connecting pipe 610 is connected to the side ventilation pipes 400. It also includes three radially arranged connecting fork pipes 620, one end of which is welded to the connecting pipe 610, and the other ends converge and are welded to the top of the central ventilation pipe 300, thus connecting the central ventilation pipe 300 to the entire pipe network. Notably, elongated third ventilation holes 630 are also provided on the walls of the connecting pipe 610 and the connecting fork pipes 620 and 620, for ventilation of the silo 100.

[0035] To increase the connection stability between the central ventilation duct 300 and the side ventilation duct 400, the connecting fork duct 620 is also coaxially fixedly connected with a reinforcing tube, which extends to the side wall of the hopper 100 and is fixedly connected to the side wall of the hopper 100.

[0036] The ventilation system provides the power source for the air supply. In this embodiment, a centrifugal fan is used as the air source, which is installed on the ground outside the silo 100. The fan's outlet is connected to a distributor via a main duct, and the distributor is then connected to the lower part of three side ventilation ducts 400 via three branch ducts.

[0037] The gate 200 is typically a long strip of steel plate that closes the discharge port 110 when closed. The opening and closing mechanism 700 drives the gate 200. This mechanism includes a slide rail 710, a rotating screw 720, a slider 740, and a rotating head 730. The slide rail 710 is welded to the lower surface of the conical base 120. A groove 711 is formed on the side wall of the slide rail 710 near the ground, and the rotating screw 720 is mounted within the groove 711 of the slide rail 710 via a bearing seat. The slider 740 is slidably connected to the slide groove 711 and threadedly connected to the rotating screw 720. The slider 740 and the gate 200 are fixedly connected by bolts. Rotating the rotating screw 720 can drive the slider 740 and the gate 200 to slide along the length of the slide groove 711. One end of the rotating screw 720 extends to the outside of the chamber 100. The rotating head 730 is fixedly connected to the end of the rotating screw 720 and can be used to attach an electric or manual wrench.

[0038] In addition, for ease of maintenance, an inspection port is provided on the lower half of the side wall of the silo 100. An inspection door that can be opened and closed is rotatably connected to the inspection port via a hinge, and the inspection door is locked to the silo 100 by a bolt.

[0039] Finally, directly below the discharge port 110, two inclined guide plates 650 are welded, with an inclination angle greater than that of the conical bottom 120. The two guide plates 650 are located on both sides of the width of the gate 200, and are used to guide the flowing corn to the middle for easy discharge.

[0040] In use, corn is loaded from the top of the silo, filling it to 100%. The fan is then turned on, forcing dry outside air into the ductwork, specifically the side ventilation duct 400. The airflow then splits into multiple paths: one part flows directly out of the second ventilation hole 410 of the side ventilation duct 400, penetrating the grain layer on the side; another part rises into the connecting ring pipe 610, then through the connecting fork pipe 620 into the central ventilation duct 300, finally flowing out from the first ventilation hole 310 of the central ventilation duct 300, directly hitting the core of the grain pile; and a third part overflows directly from the third ventilation hole 630, drying the corn cobs in the center. This forms a three-dimensional ventilation network from the center to the edge, from the side to the top, completely eliminating ventilation blind spots and efficiently solving the problem of mold growth in the cob. Forced ventilation overcomes dependence on natural wind, resulting in high and stable drying efficiency.

[0041] When discharge is required, the rotating head 730 is rotated with a wrench, which in turn rotates the lead screw 720. The lead screw 720 then moves the slider 740, which in turn moves the gate 200, thus easily opening or closing the discharge port 110. Under the influence of gravity, the grain slides along the conical bottom 120 to the center, falls through the discharge port 110 onto the guide plate 650, and is guided to the designated position, resulting in thorough, labor-saving, and clean discharge. Normally, workers can perform simple maintenance through the inspection door, which is convenient and safe.

[0042] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A kind of air-dry corn granary, including the warehouse body (100) being surrounded by ventilation net, the upper end of the warehouse body (100) is open, the lower end is equipped with discharge port (110), and the discharge port (110) is installed gate (200);Its characterized in that: Also includes: The central ventilation duct (300) is vertically installed at the central axis of the silo body (100), and multiple first ventilation holes (310) are provided on the side wall. Multiple side ventilation pipes (400) are provided, arranged around the central axis of the silo body (100) and extending to the bottom of the silo body (100), and multiple second ventilation holes (410) are provided on the side wall. A ventilation mechanism is located on the outside of the compartment (100) and connected to the side ventilation pipe (400) for ventilating the side ventilation pipe (400).

2. The wind-dried corn crib of claim 1, wherein: It also includes a connecting ring pipe (610) and a connecting fork pipe (620), wherein a plurality of the side ventilation pipes (400) are connected into a whole through the connecting ring pipe (610), and the central ventilation pipe (300) is connected to the connecting ring pipe (610) through the connecting fork pipe (620).

3. The wind-dried corn crib of claim 2, wherein: Both the connecting ring pipe (610) and the connecting fork pipe (620) are provided with a plurality of third ventilation holes (630). The connecting ring pipe (610) is connected to the side ventilation pipe (400), and the connecting fork pipe (620) is connected to the connecting ring pipe (610) and the middle ventilation pipe (300).

4. The wind-dried corn crib of claim 3, wherein: The first ventilation hole (310), the second ventilation hole (410) and the third ventilation hole (630) are all elongated.

5. The wind-dried corn crib of claim 4, wherein: The ventilation mechanism includes a fan and ducts, the number of which corresponds to the number of the side ventilation ducts (400), and the air outlet of the fan is connected to the ducts.

6. The wind-dried corn crib of claim 1, wherein: The bottom of the silo (100) is a conical bottom (120) that converges towards the center. The discharge port (110) is located at the lowest point of the conical bottom (120). An opening and closing mechanism (700) is installed at the conical bottom (120). The opening and closing mechanism (700) is connected to the gate (200) and is used to drive the gate (200) to close or open the discharge port (110).

7. The wind-dried corn crib of claim 6, wherein: The opening and closing mechanism (700) includes a slide rail (710), a rotating screw (720), a rotating head (730), and a slider (740). The slide rail (710) is perpendicular to the axis of the chamber (100) and is located on one side of the conical bottom (120). A groove (711) is provided on the side of the slide rail (710) near the ground. The slider (740) is slidably connected in the groove (711) and is connected to the gate (200). The rotating screw (720) rotates on the inner wall of the groove (711) and is threadedly connected to the slider (740). The rotating head (730) is located at one end of the rotating screw (720).

8. The wind-dried corn crib of claim 1, wherein: The central ventilation duct (300) is located above the discharge port (110) and is located away from the discharge port (110) via a suspension (640).

9. The wind-dried corn crib of claim 6, wherein: Two guide plates (650) are inclinedly arranged on the discharge port (110), and the inclination angle of the two guide plates (650) is greater than the inclination angle of the conical bottom (120).

10. The wind-dried corn crib of claim 1, wherein: The side wall of the compartment (100) is provided with an inspection port, and an inspection door is rotatably connected to the inspection port.

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