Ventilation opening automatic opening and closing structure and intelligent greenhouse thereof

Abstract

The utility model relates to the technical field of greenhouses, and discloses a ventilation opening automatic opening and closing structure and an intelligent greenhouse thereof.The ventilation opening automatic opening and closing structure comprises a base, a first ventilation pipe is fixedly installed at the top of the base, an extension pipe is slidably arranged in the first ventilation pipe, and a push rod is fixedly installed at the top of the base; the shielding structure comprises a cover plate, a connecting rod, a balancing weight and a guide plate, the cover plate is rotationally connected with the extension pipe, the connecting rod is rotationally connected with the cover plate, the balancing weight is fixedly connected with the connecting rod, the guide plate is rotationally connected with the cover plate and located in a cavity of the extension pipe, and an air flow difference is formed above a port of the extension pipe through the inclined cover plate; the exhaust effect of the extension pipe is improved, a vertically downward guide plate is matched, so that pressure difference is formed at the end opening of the extension pipe, the effects of promoting exhaust and automatically shielding and sealing the extension pipe are achieved, the push rod can be used in cooperation with a controller, the controller regularly controls the push rod to move to open and close the end opening of the extension pipe, and the purpose of the intelligent greenhouse is achieved.

Description

Technical Field

[0001] This utility model relates to the field of greenhouse technology, and in particular to an automatic opening and closing structure for ventilation openings and its intelligent greenhouse. Background Technology

[0002] To ensure air quality inside the greenhouse and prevent polluted air from affecting crop growth, it is usually necessary to ventilate the greenhouse regularly.

[0003] A search revealed a smart agricultural greenhouse system (publication number: CN107450641A), comprising a greenhouse body supported by columns with shock absorbers at the bottom, a rainwater collection tank on the outside of the greenhouse body connected to the ridges via a pump, an automatic rolling shutter on the top of the greenhouse body, incandescent lamps on the top of the greenhouse body, an automatic sprayer inside the greenhouse body, a thermometer and hygrometer suspended inside the greenhouse body, ventilation openings on the greenhouse body, and a controller installed inside the greenhouse body with a built-in battery.

[0004] In existing technologies, ventilation is achieved through vents located on one side of the greenhouse. However, this requires manual opening and closing of the vents, which is labor-intensive and inefficient when opening or closing multiple greenhouses one by one. Furthermore, the air circulation around the vents located on one side of the greenhouse is poor, and the pressure difference between the inside and outside of the greenhouse is small, resulting in unsatisfactory ventilation. Additional power, such as a fan, may be needed to promote air circulation. Therefore, there is room for optimization in the design of ventilation vents inside the greenhouse in existing technologies.

[0005] To address this, we propose an automatic opening and closing structure for ventilation openings and its associated smart greenhouse. Utility Model Content

[0006] This utility model mainly solves the technical problem of poor ventilation inside and outside the greenhouse, and provides an automatic opening and closing structure for ventilation openings and a smart greenhouse.

[0007] To achieve the above objectives, this utility model adopts the following technical solution: an automatic opening and closing structure for a ventilation opening, comprising:

[0008] A base, on the top of which a first vent pipe is fixedly installed, an extension pipe is slidably disposed inside the first vent pipe, and a push rod is fixedly installed on the top of the base, the output shaft of the push rod being fixedly connected to the extension pipe;

[0009] A shielding structure is provided at the port of the extension tube to shield and seal the port of the extension tube. The shielding structure includes a cover plate, a connecting rod, a counterweight, and a guide plate. The cover plate is rotatably connected to the extension tube, the connecting rod is rotatably connected to the cover plate, the counterweight is fixedly connected to the connecting rod, and the guide plate is rotatably connected to the cover plate and located inside the cavity of the extension tube.

[0010] In a preferred embodiment of this utility model, the cover plate is formed into a rectangular plate, and the cross-sectional dimension of the cover plate is larger than the port dimension of the extension tube.

[0011] In a preferred embodiment of this utility model, the connecting rod is rotatably mounted on one side of the cover plate, the counterweight is fixedly mounted on the bottom of the connecting rod, and the weight of the connecting rod is greater than the weight of the cover plate.

[0012] In a preferred embodiment of this utility model, the guide plate is rotatably disposed at the bottom of the cover plate, the guide plate is a rectangular plate, and the guide plate does not contact the inner wall of the extension tube.

[0013] In a preferred embodiment of this utility model, a support rod is fixedly installed at the bottom of the cover plate, and the support rod is rotatably connected to the outer wall of the extension tube.

[0014] In a preferred embodiment of this utility model, a limiting plate is fixedly installed on the outer wall of the first vent pipe. When the bottom of the cover plate is in contact with the end face of the extension pipe, the counterweight is in contact with the top surface of the limiting plate.

[0015] A smart greenhouse includes a frame, on which a film is laid, the frame and the film together forming the greenhouse body. The frame is equipped with an automatic opening and closing structure for all the above-mentioned ventilation openings. The base is fixedly installed on the frame by a bracket, and a first vent pipe extends through the film into the greenhouse body.

[0016] Beneficial effects

[0017] This utility model provides an automatic opening and closing structure for ventilation openings and its intelligent greenhouse. It has the following beneficial effects:

[0018] 1. This automatic opening and closing structure for ventilation openings and its intelligent greenhouse, through the inclined cover plate, creates an airflow difference above the extension pipe port, improving the exhaust effect of the extension pipe. With the vertically downward guide plate, when there is a crosswind, the guide plate can cut and guide the airflow to create a pressure difference at the extension pipe port, which has the effect of promoting exhaust and automatically blocking and sealing the extension pipe. The push rod can be used with the controller, and the controller can control the movement of the push rod at timed intervals to realize the opening and closing of the extension pipe port, thus achieving the purpose of intelligent greenhouse.

[0019] 2. The automatic opening and closing structure of the ventilation opening and its intelligent greenhouse, when the extension pipe descends to the lowest point, the counterweight block is attached to the top surface of the limiting plate. The limiting plate pushes the counterweight block and the connecting rod to keep the cover plate horizontal, prevent the cover plate from being lifted by the side wind, and ensure the sealing effect of the extension pipe port when ventilation is not required. Attached Figure Description

[0020] Figure 1 This is one of the overall perspective views of this utility model;

[0021] Figure 2 This is the second overall perspective view of the present utility model;

[0022] Figure 3 This is a perspective view of the cover plate, connecting rod, and counterweight of this utility model;

[0023] Figure 4 This is a perspective view of the first vent pipe, the extension pipe, and the base of this utility model;

[0024] Figure 5 This is a schematic diagram of the installation of the base and the greenhouse body of this utility model.

[0025] Legend: 10. Base; 11. First vent pipe; 12. Extension pipe; 13. Push rod; 14. Cover plate; 20. Connecting rod; 21. Counterweight; 22. Support rod; 23. Guide plate; 24. Limiting plate. Detailed Implementation

[0026] An automatic opening and closing structure for ventilation openings and its intelligent greenhouse, such as Figure 1 and Figure 2 As shown, it includes:

[0027] A base 10 is provided, and a first vent pipe 11 is fixedly installed on the top of the base 10. An extension pipe 12 is slidably arranged inside the first vent pipe 11. A push rod 13 is fixedly installed on the top of the base 10. The output shaft of the push rod 13 is fixedly connected to the extension pipe 12. Specifically, an installation hole is opened through the top of the base 10. The first vent pipe 11 extends through the installation hole to the bottom of the base 10. The push rod 13 pushes the extension pipe 12 to slide inside the cavity of the first vent pipe 11, so that the extension pipe 12 moves vertically upward and increases the height of the extension pipe 12 port above the ground. With the help of the airflow difference, the first vent pipe 11 and the extension pipe 12 form a chimney, and the airflow inside the greenhouse body is discharged through the chimney.

[0028] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, a shielding structure is installed at the port of the extension tube 12 to shield and seal the port of the extension tube 12. The shielding structure includes a cover plate 14, a connecting rod 20, a counterweight 21, and a guide plate 23. The cover plate 14 is rotatably connected to the extension tube 12, the connecting rod 20 is rotatably connected to the cover plate 14, the counterweight 21 is fixedly connected to the connecting rod 20, and the guide plate 23 is rotatably connected to the cover plate 14 and located inside the cavity of the extension tube 12. The cover plate 14 is a rectangular plate, and the cross-sectional dimension of the cover plate 14 is larger than the port dimension of the extension tube 12. The connecting rod 20 is rotatably installed on one side of the cover plate 14, the counterweight 21 is fixedly installed at the bottom of the connecting rod 20, and the weight of the connecting rod 20 is greater than the weight of the cover plate 14. The guide plate 23 is rotatably installed at the bottom of the cover plate 14. The guide plate 23 is a rectangular plate and does not contact the inner wall of the extension tube 12. A support rod 22 is fixedly installed at the bottom of the cover plate 14 and is rotatably connected to the outer wall of the extension tube 12.

[0029] In this design, when the extension tube 12 is retracted into the first vent tube 11, the cover plate 14 is in a horizontal position. The cover plate 14 seals the extension tube 12 and provides rain protection. When the extension tube 12 rises, the weight of the counterweight 21 and the connecting rod 20 causes the center of gravity of the cover plate 14 to move closer to the position of the connecting rod 20. Consequently, the cover plate 14 is pulled and flipped by the connecting rod 20 and the counterweight 21. The cover plate 14 then causes the support rod 22 to rotate around the ear plate on the outer wall of the extension tube 12 by a certain angle. At this time, the cover plate 14 and the port of the extension tube 12... At a certain angle, the inclined cover plate 14 creates an airflow difference above the port of the extension pipe 12, improving the exhaust effect of the extension pipe 12. In conjunction with the vertically downward guide plate 23, when there is a crosswind, the guide plate 23 can cut and guide the airflow to create a pressure difference at the port of the extension pipe 12, which promotes exhaust and automatically blocks and seals the extension pipe 12. The push rod 13 can be used with a controller, which can be a PLC controller. The controller controls the movement of the push rod 13 at timed intervals to open and close the port of the extension pipe 12, achieving the purpose of a smart greenhouse.

[0030] like Figure 1 and Figure 2 As shown, a limiting plate 24 is fixedly installed on the outer wall of the first vent pipe 11. When the bottom of the cover plate 14 is in contact with the end face of the extension pipe 12, the counterweight 21 is in contact with the top surface of the limiting plate 24. In order to ensure the sealing effect of the cover plate 14 on the port of the extension pipe 12, when the extension pipe 12 is lowered to the lowest point, the counterweight 21 is in contact with the top surface of the limiting plate 24. The limiting plate 24 pushes the counterweight 21 and the connecting rod 20 to keep the cover plate 14 horizontal, prevent the cover plate 14 from being lifted by the side wind, and ensure the sealing effect on the port of the extension pipe 12 when ventilation is not required.

[0031] like Figure 5As shown, a smart greenhouse includes a frame covered with a film, the frame and film together forming the greenhouse body. The frame is equipped with an automatic opening and closing structure for all the aforementioned ventilation openings. The base 10 is fixedly installed on the frame by a bracket. The first ventilation pipe 11 extends through the film into the greenhouse body. By setting the above structure, the greenhouse body has the characteristics of automatic and timed ventilation, realizing smart ventilation. At the same time, it can also automatically close the port of the extension pipe 12 to prevent ventilation, making it more practical.

[0032] The working principle of this utility model is as follows: The push rod 13 pushes the extension tube 12 to slide within the cavity of the first ventilator 11, causing the extension tube 12 to move vertically upwards and increasing the height of its port from the ground. Utilizing the airflow difference, the first ventilator 11 and the extension tube 12 form a chimney, through which the airflow inside the greenhouse body is discharged. When the extension tube 12 retracts into the first ventilator 11, the cover plate 14 is in a horizontal state. The cover plate 14 seals the port of the extension tube 12, providing both sealing and rain protection. When the extension tube 12 rises, the weight of the counterweight 21 and the connecting rod 20 causes the center of gravity of the cover plate 14 to move closer to the position of the connecting rod 20. Consequently, the cover plate 14 is further protected by the connecting rod 20 and the counterweight 21. Pulling and flipping, the cover plate 14 drives the support rod 22 to rotate around the ear plate on the outer wall of the extension tube 12 at a certain angle. At this time, the cover plate 14 and the port of the extension tube 12 are at a certain angle. The inclined cover plate 14 creates an airflow difference above the port of the extension tube 12, improving the exhaust effect of the extension tube 12. With the vertically downward guide plate 23, when there is a crosswind, the guide plate 23 can cut and guide the airflow to create a pressure difference at the port of the extension tube 12. When the extension tube 12 descends to the lowest point, the counterweight 21 is attached to the top surface of the limiting plate 24. The limiting plate 24 pushes the counterweight 21 and the connecting rod 20 to keep the cover plate 14 horizontal, preventing the cover plate 14 from being lifted by the crosswind. The horizontal cover plate 14 blocks and seals the port of the extension tube 12.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An automatic opening and closing structure for a ventilation opening, characterized in that, Include: The base (10), the top of the base (10) is fixedly installed with the first air pipe (11), the inside of the first air pipe (11) is slidably provided with the extension pipe (12), the top of the base (10) is fixedly installed with the push rod (13), the output shaft of the push rod (13) is fixedly connected with the extension pipe (12); The shielding structure is arranged at the port of the extension pipe (12) for shielding and sealing the port of the extension pipe (12), the shielding structure comprises a cover plate (14), a connecting rod (20), a counterweight (21) and a guide plate (23), the cover plate (14) is rotatably connected with the extension pipe (12), the connecting rod (20) is rotatably connected with the cover plate (14), the counterweight (21) is fixedly connected with the connecting rod (20), and the guide plate (23) is rotatably connected with the cover plate (14) and located in the cavity of the extension pipe (12).

2. The automatic opening and closing structure of a ventilation opening according to claim 1, characterized in that: The cover plate (14) forms a rectangular plate, and the cross-sectional dimension of the cover plate (14) is greater than the port dimension of the extension pipe (12).

3. The automatic opening and closing structure of a ventilation opening according to claim 1, characterized in that: The connecting rod (20) is rotatably arranged on one side of the cover plate (14), the counterweight (21) is fixedly installed at the bottom of the connecting rod (20), and the weight of the connecting rod (20) is greater than the weight of the cover plate (14).

4. The automatic opening and closing structure of a ventilation opening according to claim 1, characterized in that: The guide plate (23) is rotatably arranged at the bottom of the cover plate (14), the guide plate (23) is a rectangular plate, and the guide plate (23) is not in contact with the inner wall of the extension pipe (12).

5. The automatic opening and closing structure of a ventilation opening according to claim 1, characterized in that: The bottom of the cover plate (14) is fixedly installed with a support rod (22), and the support rod (22) is rotatably connected with the outer wall of the extension pipe (12).

6. The automatic opening and closing structure of a ventilation opening according to claim 1, characterized in that: The outer wall of the first air pipe (11) is fixedly installed with a limiting plate (24), when the bottom of the cover plate (14) is attached to the end face of the extension pipe (12), the counterweight (21) is attached to the top surface of the limiting plate (24).

7. A smart greenhouse, comprising a framework, a film is laid on the framework, and the framework and the film jointly form a greenhouse body, characterized in that: The framework is provided with the automatic opening and closing structure of the ventilation opening in any one of claims 1-6, the base (10) is fixedly installed on the framework through the support, and the first air pipe (11) extends through the film into the greenhouse body.

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