A full-electric ventilation opening device for a grain storage silo

Abstract

The utility model discloses a kind of grain storage shallow round barn top full-electric ventilation opening devices, it is related to grain storage field, to solve the traditional barn top ventilation equipment, ventilation efficiency is low, artificial control is difficult to open and close, including ventilation duct, the ventilation duct is sequentially divided into air valve shell, fan casing and rain cap shell from below to above, air valve cover is equipped in the air valve shell, air valve cover controls the opening and closing of air valve shell, fan is rotatably connected in the fan casing, rain cap shell is slidably connected with self-regulating rainproof structure, advantage lies in: by rainfall sensor, electric push rod and rain cap end cover, it is realized that remote intelligent ventilation, rainproof waterproof automatic opening or closing, truly realized the "unattended" intelligent management;While integrated design avoids the mechanical modification of on-site complicated, installation and maintenance are simple, and reliability is high.

Description

Technical Field

[0001] This utility model relates to the field of grain storage technology, and in particular to a fully electric ventilation opening device for the top of a shallow circular grain storage silo. Background Technology

[0002] In the grain storage sector, especially in the management of shallow circular silos in large grain depots, preserving the quality and freshness of grain is the core task. To ensure grain safety and prevent mold and quality damage caused by the accumulation of moisture and heat, timely and effective mechanical ventilation of grain piles is a crucial technical measure. By forcibly introducing or extracting air into the grain pile, the temperature and humidity inside can be effectively regulated, achieving the purposes of heat dissipation, moisture dissipation, temperature equalization of the grain, and pest prevention.

[0003] Currently, grain silo ventilation systems typically consist of ventilation trenches and ducts at the bottom of the silo, and ventilation openings at the top. Among these, the roof ventilation openings, as the key outlets for gas exchange, are of paramount importance in terms of structural design and functionality. Traditional silo roof ventilation openings generally employ a simple rain cap device. The core function of this device focuses on basic physical protection, namely, preventing rainwater, dust, and other foreign objects from falling into the silo during non-ventilation periods through a cap structure that can be opened and closed manually or with simple mechanical means. However, this traditional design suffers from significant functional limitations and technological constraints: First, ventilation is lacking and relies on natural conditions. Traditional rain hats do not have active ventilation capabilities. Their ventilation effect depends entirely on the weak "chimney effect" caused by temperature differences inside the grain pile or natural wind, resulting in low and highly unstable ventilation efficiency. Under weather conditions of balanced external air pressure, no wind, or small temperature differences, natural ventilation is almost completely lost, making it difficult to meet the demand for large-volume forced ventilation for rapid cooling and moisture reduction in emergency situations.

[0004] Secondly, the level of automation and intelligence is low. Opening and closing the rain caps mostly requires manual on-site operation and cannot be linked with the grain condition monitoring system. Managers cannot remotely command or automatically trigger ventilation operations based on real-time monitoring data of the grain pile's internal temperature and humidity. This not only increases labor intensity but may also lead to missed opportunities for optimal treatment due to inaccurate timing of ventilation, affecting the quality of stored grain.

[0005] Thirdly, there is room for improvement in airtightness and ventilation efficiency. When traditional devices are closed, the sealing measures at the joints of the casing are often quite simple. Over time, aging or deformation can lead to a decrease in airtightness, affecting the effectiveness of fumigation and pest control. At the same time, the ventilation channel design has not been specifically optimized, resulting in greater airflow resistance and limiting ventilation efficiency. Utility Model Content

[0006] In view of the above situation and to overcome the defects of the existing technology, this utility model provides a fully electric ventilation opening device for the top of a shallow circular grain storage silo. This design effectively solves the problems of low ventilation efficiency and difficulty in manually controlling the opening and closing of traditional silo top ventilation equipment.

[0007] To achieve the above objectives, the present invention provides the following technical solution: The present invention includes a ventilation duct, which is divided into a valve housing, a fan housing and a rain cap housing from bottom to top. The valve housing is provided with a valve cover plate, which controls the opening and closing of the valve housing. A fan is rotatably connected inside the fan housing. A self-adjusting rainproof structure is slidably connected to the rain cap housing. The rainproof structure includes a rainproof cap end cover, which is located directly above the rainproof cap shell. The rainproof cap end cover is slidably connected to the rainproof cap shell. A rain sensor is fixedly connected to the outside of the rainproof cap shell. An electric push rod is installed on the rainproof cap shell and the rainproof cap end cover. The electric push rod is controlled by the rain sensor.

[0008] Preferably, a sealing strip is fixedly connected to the upper end of the rain cap shell, a support sleeve is provided on the inner side of the sealing strip, the support sleeve is fixedly connected to the rain cap shell, a stainless steel guide post is slidably connected to the support sleeve, and the stainless steel guide post is fixedly connected to the end cap of the rain cap.

[0009] Preferably, a protective net is fixedly connected inside the rain cap shell, the protective net is located above the stainless steel guide post, and a linear flange bearing is installed inside the stainless steel guide post.

[0010] Preferably, a rainproof plate is provided on the top of the fan housing, the rainproof plate is fixedly connected to the bottom of the rainproof cap housing, and the rain sensor is fixed to the side of the rainproof plate.

[0011] Preferably, a wind pressure sensor and an explosion-proof junction box are fixedly connected to the outside of the rain cap shell.

[0012] Preferably, the fan includes an explosion-proof motor, which is fixedly connected to the fan housing. The output end of the explosion-proof motor is provided with a drive shaft, and the two ends of the drive shaft are fixedly connected to an upper fan blade and a lower fan blade. The upper fan blade and the lower fan blade are rotatably installed inside the fan housing, and a fan junction box is fixedly connected to the outside of the fan housing.

[0013] Preferably, a rotating shaft assembly is installed on the air valve cover plate, the rotating shaft assembly is rotatably connected to the air valve housing, an electric actuator is provided at the input end of the rotating shaft assembly, the electric actuator is fixedly connected to the air valve housing, and a controller is fixedly installed on the outside of the air valve housing.

[0014] Compared with the prior art, the outstanding advantages of this utility model are: This application achieves a leap from passive rain protection to active intelligent ventilation through the cooperation of rain sensors, controllers, and electric actuators. The entire device's opening, closing, ventilation, and rain protection actions are all electrically driven and linked with sensors through the controller, truly realizing "unmanned" intelligent management. The integrated design avoids cumbersome on-site mechanical modifications, simplifies installation and maintenance, and ensures high reliability.

[0015] The fan in this application includes upper and lower fan blades, which work together to effectively form a coordinated airflow, significantly enhancing the efficiency and air pressure of ventilation or air supply, thereby greatly shortening the overall ventilation time of the grain silo; at the same time, a large-sized sealing strip is added at the connection between the shells to enhance airtightness and add a layer of protection for grain storage safety. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the rain cap end cap of this utility model when closed.

[0017] Figure 2 This is a schematic diagram of the structure of the rain cap end cap of this utility model when it is opened.

[0018] Figure 3 This is a schematic diagram of the overall axonometric structure of this utility model.

[0019] Figure 4 This is a schematic diagram of the side structure of the protective netting of this utility model.

[0020] Figure 5 This is a schematic diagram of the fan structure of this utility model.

[0021] Figure 6 This is a schematic diagram of the connection structure of the air valve cover plate of this utility model.

[0022] Figure 7 This is a schematic diagram of the sealing strip structure of this utility model.

[0023] The following are the labeling elements in the diagram: 1. Rain cap end cap; 2. Bearing housing; 3. Stainless steel guide post; 4. Electric push rod; 5. Sealing strip; 6. Linear flange bearing; 7. Rain cap housing; 8. Rainproof plate; 9. Rain sensor; 10. Fan housing; 11. Upper fan blade; 12. Explosion-proof motor; 13. Lower fan blade; 14. Air valve housing; 15. Shaft assembly; 16. Controller; 17. Air valve cover plate; 18. Electric actuator; 19. Fan junction box; 20. Wind pressure sensor; 21. Explosion-proof junction box; 22. Protective net. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see the appendix Figure 1-7 This embodiment describes a fully electric ventilation outlet device for the top of a shallow circular grain storage silo: It includes a rain cap section, a fan section, and an air valve section. The rain cap section comprises a rain cap housing 7, a rain cap, a push rod motor, a stainless steel guide post 3, a sealing strip 5, a linear flange bearing 6, a bearing seat 2, a dustproof net, a rain sensor 9, a rainproof plate 8, a wind pressure sensor 20, and an explosion-proof junction box 21. The fan section comprises a fan housing 10, an upper fan blade 11, an explosion-proof motor 12, a lower fan blade 13, and a fan junction box 19. The air valve section comprises an air valve housing 14, a rotating shaft assembly 15, a controller 16, an air valve cover plate 17, and an electric actuator 18. Figure 3 As shown.

[0026] This application enables remote intelligent ventilation, rain and water protection, and automatic opening or closing of the rain cap. Its specific working principle is as follows: after the system is powered on, the rain cap remains in a closed state (e.g., Figure 1 (As shown); During normal operation, the system receives ventilation commands from the background. Controller 16 detects rainfall conditions. If there is no rain, it will sequentially open the air valve cover 17 and the rain cap. Figure 2 , Figure 6 As shown; in addition, the actuator is a manual / automatic integrated actuator, which can also be manually opened when in use, including opening the rain cap and the air valve cover 17. Then the axial flow fan is started, and the upper and lower fan blades of the fan begin to rotate for ventilation, as shown in the image. Figure 5 As shown; when the system senses rain or the background issues a stop ventilation command, the controller 16 will sequentially stop the axial flow fan, close the air valve cover 17, and close the rain cap; during ventilation operations, the rain cap is equipped with a protective net 22, which filters the airflow entering the chamber to ensure clean air, such as Figure 4 As shown. Meanwhile, the rain cap is equipped with a wind pressure sensor 20 to detect ventilation speed and wind pressure. If the wind pressure is too low, an alarm signal will be issued, prompting the administrator to check key components such as the axial flow fan, air valve cover 17, and rain cap, to promptly resolve problems and ensure the system operates correctly, efficiently, and safely.

[0027] The damper cover 17 is located inside the damper housing 14. The cover is rotatably connected to the inner wall of the damper housing 14 via a rotating shaft assembly 15. The input end of the rotating shaft assembly 15 is connected to an electric actuator 18 (such as an electric worm gear mechanism or an angular stroke electric push rod 4). By receiving an electrical signal, the electric actuator 18 can precisely drive the damper cover 17 to switch between horizontally closed and vertically open (or open at a specific angle) states, thereby fundamentally controlling the opening and closing of the entire ventilation opening.

[0028] Inside the fan housing 10, two sets of fan blades are coaxially fixed on the output shaft: the lower fan blade 13 located below and the upper fan blade 11 located above. This dual-blade opposing design can effectively form a synergistic airflow, significantly enhancing the efficiency and air pressure of exhaust or ventilation, thereby greatly shortening the overall ventilation time of the grain silo.

[0029] The rain cap housing 7 is the core carrier of the intelligent rainproof function. A rain sensor 9, a wind pressure sensor 20, and an explosion-proof junction box 21 are fixedly installed on its exterior. A self-adjusting rainproof structure is slidably connected to the top of the rain cap housing 7. This rainproof structure includes a rain cap end cap 1 at the very top. The rain cap end cap 1 is connected to the rain cap housing 7 via an electric push rod 4. The cylinder of the electric push rod 4 is hinged to the rain cap housing 7, and its push rod end is hinged to the rain cap end cap 1. The rain sensor 9 is electrically connected to the electric push rod 4, forming a simple automatic control system.

[0030] A sealing strip 5 is fixedly embedded on the upper surface of the rain cap housing 7. The sealing strip 5 is made of rubber material with excellent weather resistance and is relatively large in size to ensure that it can generate sufficient deformation when in contact with the end cap 1 of the rain cap, so as to achieve an excellent sealing effect.

[0031] To ensure smooth and unobstructed sliding, a linear flange bearing 6 can be installed inside the stainless steel guide post 3. The outer ring of the bearing fits tightly with the support sleeve. The use of the linear flange bearing 6 further reduces the coefficient of friction, making the movement of the electric push rod 4 easier and more precise.

[0032] A rainproof plate 8 is fixedly connected above the fan housing 10 and at the bottom inlet of the rainproof cap housing 7. This rainproof plate 8 is inclined, and its main function is to effectively block windblown rain during ventilation when the rainproof cap end cover 1 is slightly open, providing a second layer of waterproof protection. The rain sensor 9 can preferably be fixed to the side of this rainproof plate 8, in a well-open location that easily detects rainfall and facilitates wiring.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fully electric ventilation opening device for the top of a shallow circular grain storage silo, characterized in that: The ventilation duct is divided into a valve housing (14), a fan housing (10), and a rain cap housing (7) from bottom to top. The valve housing (14) is provided with a valve cover plate (17), which controls the opening and closing of the valve housing (14). A fan is rotatably connected inside the fan housing (10). A self-adjusting rainproof structure is slidably connected on the rain cap housing (7). The rainproof structure includes a rainproof cap end cover (1), which is located directly above the rainproof cap housing (7). The rainproof cap end cover (1) is slidably connected to the rainproof cap housing (7). A rain sensor (9) is fixedly connected to the outside of the rainproof cap housing (7). An electric push rod (4) is installed on the rainproof cap housing (7) and the rainproof cap end cover (1). The electric push rod (4) is controlled by the rain sensor (9).

2. The all-electric ventilation opening device for the top of a shallow circular grain storage silo according to claim 1, characterized in that: A sealing strip (5) is fixedly connected to the upper end of the rain cap shell. A support sleeve is provided on the inner side of the sealing strip (5). The support sleeve is fixedly connected to the rain cap shell (7). A stainless steel guide post (3) is slidably connected to the support sleeve. The stainless steel guide post (3) is fixedly connected to the rain cap end cap (1).

3. The all-electric ventilation opening device for the top of a shallow circular grain storage silo according to claim 2, characterized in that: A protective net (22) is fixedly connected inside the rain cap shell (7). The protective net (22) is located above the stainless steel guide post (3). A linear flange bearing (6) is installed inside the stainless steel guide post (3).

4. The all-electric ventilation opening device for the top of a shallow circular grain storage silo according to claim 1, characterized in that: A rainproof plate (8) is provided on the top of the fan housing (10). The rainproof plate (8) is fixedly connected to the bottom of the rainproof cap housing (7). The rain sensor (9) is fixed on the side of the rainproof plate (8).

5. The all-electric ventilation opening device for the top of a shallow circular grain storage silo according to claim 1, characterized in that: The rain cap housing (7) is externally fixed with a wind pressure sensor (20) and an explosion-proof junction box (21).

6. The all-electric ventilation opening device for the top of a shallow circular grain storage silo according to claim 1, characterized in that: The fan includes an explosion-proof motor (12), which is fixedly connected to the fan housing (10). The output end of the explosion-proof motor (12) is provided with a drive shaft, and the two ends of the drive shaft are fixedly connected to the upper fan blade (11) and the lower fan blade (13). The upper fan blade (11) and the lower fan blade (13) are rotatably installed inside the fan housing (10). The fan housing (10) is fixedly connected to the outside of the fan junction box (19).

7. The all-electric ventilation opening device for the top of a shallow circular grain storage silo according to claim 1, characterized in that: A rotating shaft assembly (15) is installed on the air valve cover plate (17). The rotating shaft assembly (15) is rotatably connected to the air valve housing (14). An electric actuator (18) is provided at the input end of the rotating shaft assembly (15). The electric actuator (18) is fixedly connected to the air valve housing (14). A controller (16) is fixedly installed on the outside of the air valve housing (14).

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