A grain bin ventilation and cooling device for loess plateau region

Abstract

The application discloses a kind of loess plateau region with granary ventilation cooling device, belong to granary technical field, including granary body and the granary door of being located in the side of granary body, the refrigerating machine is equipped in the installation shell, the two air supply components that are symmetrical and are rotatably equipped in the granary body are matched with the output end of refrigerating machine, the drive assembly for driving two air supply components rotation is equipped in the installation shell.The beneficial effects of the application are that: by setting up refrigerating machine, air supply outer pipe, air supply inner pipe, connecting outer pipe and connecting inner pipe, etc., a stable and efficient cold air delivery channel is constructed, so that the cold air flow in the process, under the action of drive assembly, the drive assembly drives air supply outer pipe and its connected components reciprocating rotation, to make connecting outer pipe and connecting inner pipe continuously agitate in grain pile, significantly improve the heat exchange efficiency between air and grain, accelerate heat dissipation, ensure that grain pile temperature is uniform and stable, prevent local overheating from causing grain mildew and other adverse conditions.

Description

Technical Field

[0001] This invention relates to the field of grain storage technology, and in particular to a ventilation and cooling device for grain storage in the Loess Plateau region. Background Technology

[0002] Grain warehouses are specialized buildings used to store large quantities of grain. Because humidity and temperature are particularly important factors during grain storage, maintaining a suitable temperature and humidity environment within grain warehouses is crucial for ensuring grain quality and safety.

[0003] Most grain silos using ventilation and cooling systems have numerous limitations and cannot meet the demands of modern grain storage. On the one hand, some grain silos rely on natural ventilation, the effectiveness of which is easily affected by external climate conditions. For example, during hot and humid seasons or periods of fluctuating weather, the temperature and humidity of natural wind are unstable, making it impossible to precisely regulate the internal environment of the grain silo. This often leads to problems such as mold and pest infestation due to temperature and humidity fluctuations, seriously threatening the quality and safety of stored grain. On the other hand, while some simple mechanical ventilation systems can improve ventilation to some extent, they suffer from uneven ventilation. They typically only provide localized airflow, easily creating ventilation dead zones. This results in significant differences in temperature and humidity gradients within the grain pile, with some areas of grain remaining in a high-temperature and high-humidity state for extended periods due to poor ventilation, accelerating grain aging and deterioration, causing substantial economic losses. Summary of the Invention

[0004] The purpose of this invention is to provide a ventilation and cooling device for grain warehouses in the Loess Plateau region in order to solve the problems mentioned above.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A ventilation and cooling device for grain storage in the Loess Plateau region includes a grain storage body and a storage door located on one side of the grain storage body. An installation shell is fixedly installed on the other side of the grain storage body. A refrigeration unit is installed inside the installation shell. The input end of the refrigeration unit is connected to the inside of the installation shell. An air inlet is provided on the side wall of the installation shell. Two air supply components that cooperate with the output end of the refrigeration unit are symmetrically rotated inside the grain storage body. A drive component for driving the two air supply components to rotate is provided inside the installation shell.

[0007] The air supply assembly includes a connecting pipe, an outer air supply pipe, an inner air supply pipe, a connecting outer pipe, and a connecting inner pipe. The two ends of the outer air supply pipe extend out of the grain silo body and are rotatably connected to the grain silo body via bearings. One end of the inner air supply pipe extends into the interior of the outer air supply pipe, and the other end of the inner air supply pipe is connected to the connecting pipe via a rotary joint. There are multiple connecting outer pipes, each connected to the interior of the outer air supply pipe. There are also multiple connecting inner pipes, each with one end connected to the interior of the inner air supply pipe and the other end extending into the interior of the outer connecting pipe. The output end of the refrigeration unit is connected to a tee pipe via a pipeline, and the connecting pipe is connected to the tee pipe.

[0008] As a further description of the above technical solution:

[0009] The drive assembly includes a bidirectional lead screw rotatably disposed inside the mounting housing and a guide rod fixedly disposed inside the mounting housing. A motor for driving the bidirectional lead screw to rotate is fixedly disposed on the outside of the mounting housing. Two movable seats are symmetrically slidably sleeved on the outside of the guide rod. The two movable seats are respectively threadedly connected to the bidirectional lead screw. A fixed plate is provided at one end of the outer surface of the two air supply pipes. A guide groove is opened on the surface of the fixed plate. A guide post that rotatably cooperates with the guide groove is provided on one side of each of the two movable seats.

[0010] As a further description of the above technical solution:

[0011] Two return air pipes are symmetrically fixed on the outside of the grain silo body. One end of each of the two return air pipes is connected to one end of the air supply pipe through a rotary joint, and the other end of each of the two return air pipes is connected to the inside of the mounting shell through an air inlet.

[0012] As a further description of the above technical solution:

[0013] Multiple heat-conducting plates are fixedly sleeved on the outer surface of the connecting inner tube. The outer surfaces of the multiple heat-conducting plates are in close contact with the inner wall of the connecting outer tube. The surfaces of the multiple heat-conducting plates are provided with through holes, and the number of through holes is multiple and they are distributed in a ring array.

[0014] As a further description of the above technical solution:

[0015] The upper end of the mounting shell is open and a top cover is hinged to one side of the upper end. A handle is fixed on the outer surface of the top cover, and a sealing gasket is provided between the top cover and the mounting shell.

[0016] As a further description of the above technical solution:

[0017] The outer surfaces of the two return air ducts are coated with a heat dissipation coating, and the two ends of the two return air ducts are formed into a curved shape.

[0018] As a further description of the above technical solution:

[0019] One end of the connecting inner tube is threadedly connected and fixed to the surface of the air supply inner tube, and one end of the connecting outer tube is threadedly connected and fixed to the surface of the air supply outer tube.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0021] In this invention, a stable and efficient cold air delivery channel is constructed by setting up a refrigeration unit, an outer air supply pipe, an inner air supply pipe, a connecting outer pipe, and a connecting inner pipe. During the cold air circulation process, under the action of the driving component, the driving component drives the outer air supply pipe and its connected components to rotate back and forth, causing the connecting outer pipe and the connecting inner pipe to continuously stir in the grain pile. This significantly improves the heat exchange efficiency between air and grain, accelerates heat dissipation, ensures a uniform and stable temperature in the grain pile, and prevents local overheating that could lead to mold growth or other adverse conditions.

[0022] In this invention, by setting up an outer connecting pipe, an inner connecting pipe, a heat-conducting plate, and through holes, the heat-conducting plate effectively absorbs the heat in the stacked grain. When the air flows in the outer connecting pipe, the through holes effectively increase the contact area between the air and the heat-conducting plate, significantly enhancing the overall cooling effect, providing a more solid temperature guarantee for grain preservation, and further consolidating the quality of grain storage.

[0023] This invention successfully avoids the dust problem associated with forced-air cooling in grain silos by incorporating a return air duct, mounting shell, external air supply duct, internal air supply duct, connecting external duct, and connecting internal duct. This effectively prevents dust from contaminating the grain, thus strongly ensuring the purity and quality of the grain. Simultaneously, the return air duct establishes a highly efficient gas circulation system, effectively blocking external dust and impurities from entering the refrigeration unit, significantly extending its service life, reducing equipment maintenance frequency and costs, and ensuring long-term stable operation of the device. Attached Figure Description

[0024] Figure 1 An exterior view of a grain silo provided according to an embodiment of the present invention is shown;

[0025] Figure 2 A schematic diagram of the cooling device structure provided according to an embodiment of the present invention is shown;

[0026] Figure 3 A partial structural schematic diagram of an air supply assembly provided according to an embodiment of the present invention is shown;

[0027] Figure 4 A partial structural cross-sectional view of an air supply assembly provided according to an embodiment of the present invention is shown;

[0028] Figure 5 A schematic diagram of the internal structure of the connecting outer tube provided according to an embodiment of the present invention is shown;

[0029] Figure 6The present invention provides an embodiment of the invention. Figure 5 Schematic diagram of the structure at point A in the middle;

[0030] Figure 7 A schematic diagram of the connection structure of the refrigeration unit, the tee pipe, and the connecting pipe provided according to an embodiment of the present invention is shown.

[0031] Figure 8 A schematic diagram of the mounting shell structure provided according to an embodiment of the present invention is shown;

[0032] Figure 9 A partial structural diagram of a drive component provided according to an embodiment of the present invention is shown;

[0033] Figure 10 A schematic diagram of the connection structure between the threaded seat and the guide post according to an embodiment of the present invention is shown;

[0034] Figure 11 A schematic diagram of a fixing plate structure provided according to an embodiment of the present invention is shown.

[0035] Legend: 1. Grain silo body; 2. Silo door; 3. Mounting shell; 4. Return air duct; 5. Outer air supply duct; 6. Connecting outer duct; 7. Connecting pipe; 8. Guide rod; 9. T-joint; 10. Rotary joint; 11. Refrigeration unit; 12. Bearing; 13. Motor; 14. Handle; 15. Hinge; 16. Top cover; 17. Two-way lead screw; 18. Moving seat; 19. Fixing plate; 20. Guide column; 21. Guide groove; 22. Inner air supply duct; 23. Connecting inner duct; 24. Heat conduction plate; 25. Through hole. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] like Figures 1-11As shown, a grain storage ventilation and cooling device for the Loess Plateau region includes a grain storage body 1 and a storage door 2 located on one side of the grain storage body 1. The top of the grain storage body 1 has a double-layer structure, including an inner top and an outer top. Both the inner and outer tops are made of corrugated steel plates with a central arch. The outer top and the inner top are distributed vertically at intervals. Workers can open the storage door 2 to enter and exit the grain storage body 1. At the same time, the grain inside the grain storage body 1 can be transferred by a trolley. An installation shell 3 is fixedly installed on the other side of the grain storage body 1. The installation shell 3 is fixed to the outside of the grain storage body 1 by bolts or welding. A refrigeration unit 11 is installed inside the installation shell 3. The input end of the refrigeration unit 11 is connected to the inside of the installation shell 3. An air inlet is provided on the side wall of the installation shell 3. Two air supply components that cooperate with the output end of the refrigeration unit 1 are symmetrically rotated inside the grain storage body 1. When the refrigeration unit 11 is working, it generates cold air, which is circulated through the air supply components to cool the inside of the grain storage body 1. A drive component for driving the two air supply components to rotate is provided inside the installation shell 3.

[0038] The air supply assembly includes a connecting pipe 7, an outer air supply pipe 5, an inner air supply pipe 22, a connecting outer pipe 6, and a connecting inner pipe 23. The outer air supply pipe 5 extends out of the grain silo body 1 at both ends and is rotatably connected to the grain silo body 1 via bearings 12. One end of the inner air supply pipe 22 extends into the outer air supply pipe 5, and the other end of the inner air supply pipe 22 is connected to the connecting pipe 7 via a rotary joint 10. Multiple connecting outer pipes 6 are connected to the interior of the outer air supply pipe 5. Multiple connecting inner pipes 23 are also present, with one end connected to the interior of the inner air supply pipe 22 and the other end extending into the connecting outer pipe 6. The output end of the chiller 11 is connected to a tee pipe 9 via a pipeline. The connecting pipe 7 is connected to the tee pipe 9. The cold air generated by the chiller 11 passes through the tee pipe 9. The air supply pipe 9 delivers the air to the connecting pipe 7, and then along the connecting pipe 7 to the inner air supply pipe 22. After passing through the inner air supply pipe 22, the air supply pipe 23 delivers the air to the connecting pipe 6, and then through the connecting pipe 6 to the outer air supply pipe 5. Finally, the air supply pipe 5 is discharged from the other end of the outer air supply pipe 5. During the entire process, the outer air supply pipe 5 rotates under the action of the drive component. The drive component drives the outer air supply pipe 5 to rotate back and forth, which in turn drives the inner air supply pipe 22, the outer connecting pipe 6, and the inner connecting pipe 23 to rotate as a whole. During this process, the outer connecting pipe 6 and the inner connecting pipe 23 will swing back and forth, which stirs the grain piled in the grain silo body 1, thereby improving the cooling effect on the inside of the piled grain.

[0039] Furthermore, the drive assembly includes a bidirectional lead screw 17 rotatably disposed inside the mounting housing 3 and a guide rod 8 fixedly disposed inside the mounting housing 3. A motor 13 for driving the bidirectional lead screw 17 to rotate is fixedly disposed on the outside of the mounting housing 3. Two movable seats 18 are symmetrically slidably sleeved on the outside of the guide rod 8. The two movable seats 18 are threadedly connected to the bidirectional lead screw 17 respectively. A fixing plate 19 is provided at one end of the outer surface of each of the two air supply pipes 5. A guide groove 21 is opened on the surface of the fixing plate 19. A guide post 20 that cooperates with the guide groove 21 is rotatably disposed on one side of each of the two movable seats 18. In use, the operator starts the motor 13, and the motor 13 drives the bidirectional lead screw 17 to rotate reciprocally. When the bidirectional lead screw 17 rotates clockwise, it drives the two movable seats 18 to move relative to each other (the movable seats 18 are guided by the guide rod 8). (Stable horizontal movement), the relative movement of the two moving seats 18 drives the relative movement of the two guide columns 20. With the cooperation of the guide columns 20 and the guide groove 21, the two fixed plates 19 rotate relative to each other, which in turn drives the air supply pipes 5 to rotate relative to each other. The relative rotation of the two air supply pipes 5 will cause the connecting outer pipe 6 and the connecting inner pipe 23 to swing downward. Conversely, when the bidirectional screw 17 rotates counterclockwise, the two moving seats 18 will move in opposite directions, which will cause the two air supply pipes 5 to rotate in opposite directions, causing the connecting outer pipe 6 and the connecting inner pipe 23 to swing upward. This improves the cooling effect on the grain stored in the grain silo body 1. The whole process does not require blowing air into the grain silo body 1, effectively avoiding dust flying in the grain silo under the action of blowing air, causing dust to enter the ventilation duct.

[0040] Furthermore, two return air pipes 4 are symmetrically fixed on the outside of the grain silo body 1. One end of each of the two return air pipes 4 is connected to one end of the air supply pipe 5 through a rotary joint 10. The other end of each of the two return air pipes 4 is connected to the inside of the mounting shell 3 through an air inlet. During use, the air discharged through the air supply pipe 5 will enter the return air pipes 4 and flow back to the mounting shell 3, achieving the effect of gas circulation. This prevents dust and impurities in the external environment from easily accumulating inside the refrigeration unit 11 and affecting its service life.

[0041] Furthermore, multiple heat-conducting plates 24 are fixedly sleeved on the outer surface of the inner tube 23. The outer surfaces of the multiple heat-conducting plates 24 are in close contact with the inner wall of the outer tube 6. The surfaces of the multiple heat-conducting plates 24 are provided with through holes 25. The number of through holes 25 is multiple and they are distributed in a ring array. Under the action of the heat-conducting plates 24, heat is effectively absorbed, that is, the heat in the piled grain is absorbed. When the air flows in the outer tube 6, it will pass through the through holes 25 on the surface of the heat-conducting plates 24 in sequence, thereby increasing the contact area between the air and the heat-conducting plates 24. This allows the air to carry away the heat on the heat-conducting plates 24 during the airflow process, thereby improving the cooling effect.

[0042] Furthermore, the upper end of the mounting shell 3 is open, and a top cover 16 is hinged to one side of the upper end via a hinge 15. A handle 14 is fixed to the outer surface of the top cover 16, and the handle 14 is fixed to the surface of the top cover 16 with screws, making it convenient for operators to open or close the top cover 16. A sealing gasket is provided between the top cover 16 and the mounting shell 3. The sealing gasket ensures the sealing effect inside the mounting shell 3 after the top cover 16 is closed. Operators can open the top cover 16 to inspect and maintain the internal components of the mounting shell 3, such as inspecting the sealing of the pipe connections and lubricating the rotating connection of the bidirectional screw 17, which effectively improves the service life of the entire device.

[0043] Furthermore, the outer surfaces of the two return air ducts 4 are provided with heat dissipation coatings, and the two ends of the two return air ducts 4 are formed into a curved shape. By setting heat dissipation coatings, the air can exchange heat with the external environment during the return flow of the air through the return air ducts 4, which facilitates the initial heat dissipation and cooling of the return air.

[0044] Furthermore, one end of the connecting inner tube 23 is threadedly connected and fixed to the surface of the air supply inner tube 22, and one end of the connecting outer tube 6 is threadedly connected and fixed to the surface of the air supply outer tube 5. The workers first threadedly connect and fix the connecting inner tube 23 to the surface of the air supply inner tube 22, and then put the connecting outer tube 6 on the outside of the connecting inner tube 23 and threadedly connect and fix it to the surface of the air supply outer tube 5. The threads of the connecting inner tube 23 and the connecting outer tube 6 are tightened in the same direction, so that the connecting outer tube 6 will not cause the connecting inner tube 23 to loosen during subsequent installation.

[0045] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A ventilation and cooling device for grain storage in the Loess Plateau region, comprising a grain storage body (1) and a storage door (2) located on one side of the grain storage body (1), characterized in that, The grain storage body (1) is fixedly provided with an installation shell (3) on the other side. The installation shell (3) is provided with a refrigeration unit (11). The input end of the refrigeration unit (11) is connected to the inside of the installation shell (3). The side wall of the installation shell (3) is provided with an air inlet. The grain storage body (1) is symmetrically rotated with two air supply components that cooperate with the output end of the refrigeration unit (11). The installation shell (3) is provided with a drive component for driving the two air supply components to rotate. The air supply assembly includes a connecting pipe (7), an outer air supply pipe (5), an inner air supply pipe (22), an outer connecting pipe (6), and an inner connecting pipe (23). The two ends of the outer air supply pipe (5) pass through the grain silo body (1) and are rotatably connected to the grain silo body (1) through a bearing (12). One end of the inner air supply pipe (22) passes through the interior of the outer air supply pipe (5), and the other end of the inner air supply pipe (22) is connected to the connecting pipe (7) through a rotary joint (10). There are multiple outer connecting pipes (6) and they are connected to the interior of the outer air supply pipe (5). There are multiple inner connecting pipes (23). One end of each inner connecting pipe (23) is connected to the interior of the inner air supply pipe (22), and the other end extends into the interior of the outer connecting pipe (6). The output end of the chiller (11) is connected to a three-way pipe (9) through a pipeline. The connecting pipe (7) is connected to the three-way pipe (9). The drive assembly includes a bidirectional lead screw (17) rotatably disposed inside the mounting housing (3) and a guide rod (8) fixedly disposed inside the mounting housing (3). A motor (13) for driving the bidirectional lead screw (17) to rotate is fixedly disposed on the outside of the mounting housing (3). Two movable seats (18) are symmetrically slidably sleeved on the outside of the guide rod (8). The two movable seats (18) are threadedly connected to the bidirectional lead screw (17) respectively. A fixed plate (19) is provided at one end of the outer surface of the two air supply pipes (5). A guide groove (21) is opened on the surface of the fixed plate (19). A guide post (20) that cooperates with the guide groove (21) is rotatably disposed on one side of the two movable seats (18).

2. The grain storage ventilation and cooling device for the Loess Plateau region according to claim 1, characterized in that, Two return air pipes (4) are symmetrically fixed on the outside of the grain storage body (1). One end of each of the two return air pipes (4) is connected to one end of the air supply pipe (5) through a rotary joint (10), and the other end of each of the two return air pipes (4) is connected to the inside of the mounting shell (3) through an air inlet.

3. A grain storage ventilation and cooling device for the Loess Plateau region according to claim 2, characterized in that, Multiple heat-conducting plates (24) are fixedly sleeved on the outer surface of the connecting inner tube (23). The outer surfaces of the multiple heat-conducting plates (24) are in close contact with the inner wall of the connecting outer tube (6). Through holes (25) are opened on the surface of the multiple heat-conducting plates (24). The number of through holes (25) is multiple and they are distributed in a ring array.

4. A grain storage ventilation and cooling device for the Loess Plateau region according to claim 1, characterized in that, The upper end of the mounting shell (3) is open and a top cover (16) is hinged to one side of the upper end by a hinge (15). A handle (14) is fixed on the outer surface of the top cover (16), and a sealing gasket is provided between the top cover (16) and the mounting shell (3).

5. A grain storage ventilation and cooling device for the Loess Plateau region according to claim 2, characterized in that, The outer surfaces of the two return air ducts (4) are provided with heat dissipation coatings, and the two ends of the two return air ducts (4) are formed into a curved shape.

6. A grain storage ventilation and cooling device for the Loess Plateau region according to claim 1, characterized in that, One end of the connecting inner tube (23) is threadedly connected to the surface of the air supply inner tube (22), and one end of the connecting outer tube (6) is threadedly connected to the surface of the air supply outer tube (5).

Images