An air circulation system for a greenhouse

Abstract

This utility model discloses an air circulation system for greenhouses, including an axial flow fan and a screw. The outer wall of the axial flow fan is connected to a plasma exciter via a first connecting frame, and rotatably connected to a mounting frame via a second connecting frame. The mounting frame contains a power mechanism for driving the second connecting frame to rotate horizontally, thereby adjusting the horizontal angle of the axial flow fan. A movable plate is mounted on the top of the mounting frame, and the screw is mounted on the movable plate via a built-in nut. This utility model uses a first worm gear reducer motor to drive the components to rotate, achieving ±45° adjustment of the horizontal angle of the axial flow fan to meet different air supply needs and expand the coverage area. The second worm gear reducer motor drives the screw to rotate, which, in conjunction with a sliding rod, causes the movable plate to move linearly, raising and lowering the components to achieve height adjustment of the axial flow fan. Compared to traditional systems, its adjustment is more targeted and flexible, improving equipment applicability and adapting to diverse air supply needs.

Description

Technical Field

[0001] This utility model mainly relates to the field of greenhouse technology, specifically an air circulation system for greenhouses. Background Technology

[0002] In the field of greenhouse technology, air circulation systems are one of the key devices to ensure a good growing environment for crops inside the greenhouse. Their main function is to regulate the temperature, humidity and air quality inside the greenhouse through reasonable air flow, so as to provide suitable conditions for crop growth.

[0003] However, traditional greenhouse air circulation systems have significant limitations. In most traditional systems, the axial flow fans are fixed in position, making it impossible to flexibly adjust the airflow angle and height according to the actual needs of different areas within the greenhouse. This results in limited airflow coverage and makes it difficult to meet the diverse airflow requirements of crops in different locations within the greenhouse. For example, when different areas within the greenhouse require airflow of different directions or heights due to different crop types and growth stages, the fixed axial flow fans cannot precisely adapt, leading to poor uniformity and targeting of air circulation, thus affecting the effective utilization of air circulation. Utility Model Content

[0004] This utility model provides a solution that is significantly different from existing technologies, addressing the problem that existing solutions are too simplistic. It mainly provides an air circulation system for greenhouses, which solves the technical problem mentioned in the background that most axial flow fans have fixed positions and cannot flexibly adjust the air supply angle and height according to the needs of different areas in the greenhouse, resulting in a narrow air supply coverage and difficulty in meeting the differentiated air circulation needs of crops in different locations.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0006] An air circulation system for greenhouses includes an axial flow fan and a screw. The outer wall of the axial flow fan is connected to a plasma exciter via a first connecting frame and rotatably connected to a mounting frame via a second connecting frame. The mounting frame contains a power mechanism for driving the second connecting frame to rotate horizontally, thereby adjusting the horizontal angle of the axial flow fan. A movable plate is mounted on the top of the mounting frame, and the screw is mounted on the movable plate via a built-in nut. One end of the screw is connected to the output end of the power mechanism for driving the screw to rotate, thereby adjusting the height of the axial flow fan.

[0007] More preferably, the top of the movable plate is slidably fitted with symmetrically distributed sliding rods, one end of which is fitted with a top plate and the other end with a bottom plate, and the sliding rods and the movable plate form a sliding guide fit.

[0008] More preferably, the inner wall of the mounting frame is provided with a first worm gear reducer motor, the output shaft of the first worm gear reducer motor is connected to the second connecting frame via a coupling, the bottom of the base plate is installed with a second worm gear reducer motor, the output shaft of the second worm gear reducer motor is connected to the bottom end of the screw via a coupling; the upper and lower ends of the screw are rotatably connected to the top plate and the bottom plate respectively.

[0009] More preferably, the top plane of the top plate has several sets of mounting holes along the axis of symmetry. Each set of mounting holes includes at least one screw hole and one open hole. The screw hole is used to cooperate with a hexagonal head bolt to achieve rigid fixation, and the open hole is used to pass through an S-shaped hook to achieve flexible suspension.

[0010] More preferably, the sliding rods and screws between the movable plate and the top plate, and between the movable plate and the bottom plate are all fitted with rubber corrugated telescopic protective tubes, and the two ends of the protective tubes are respectively sealed to the movable plate and the top / bottom plate.

[0011] More preferably, the outlet side of the axial flow fan is detachably connected to the exhaust pipe via a flange, and filters are installed on both the inlet side of the axial flow fan and the outlet side of the exhaust pipe.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This air circulation system establishes an adjustment mechanism through components such as a second connecting frame, mounting frame, first worm gear reducer motor, moving plate, second worm gear reducer motor, and screw. The first worm gear reducer motor drives the overall rotation of related components, enabling adjustment of the axial flow fan's horizontal angle by ±°, thereby meeting airflow requirements in different directions and expanding the airflow coverage. The second worm gear reducer motor drives the screw to rotate, and with the sliding guide of the slide bar, smoothly converts the screw's rotational motion into the linear motion of the moving plate, which in turn drives the related components to rise and fall synchronously, achieving on-demand adjustment of the axial flow fan's height.

[0014] In actual use, the system can adjust the height and angle of the axial flow fan. Compared with the traditional air circulation system, its adjustment function is more targeted and flexible, which improves the applicability of the equipment in different usage scenarios and can better adapt to diverse air supply needs.

[0015] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2This is a schematic diagram of the right-side side view of the present invention;

[0018] Figure 3 This is a schematic diagram of the left side view of the present invention.

[0019] Numbering on the map:

[0020] 1. Axial flow fan; 2. First connecting frame; 3. Plasma excier; 4. Second connecting frame; 5. Mounting frame; 6. First worm gear reducer motor; 7. Moving plate; 8. Slide rod; 9. Screw; 10. Top plate; 11. Bottom plate; 12. Second worm gear reducer motor; 13. Exhaust pipe; 14. Filter screen. Detailed Implementation

[0021] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the utility model more thorough and comprehensive.

[0022] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0023] Please refer to the appendix carefully. Figure 1-3 An air circulation system for greenhouses includes an axial flow fan 1 and a screw 9. A second connecting frame 4 is installed on the outer wall of the axial flow fan 1, and a plasma exciter 3 is installed through a first connecting frame 2. The second connecting frame 4 is rotatably connected to a mounting frame 5. A power mechanism for driving the second connecting frame 4 to rotate horizontally is installed inside the mounting frame 5 to adjust the horizontal angle of the axial flow fan 1. A movable plate 7 is installed on the top of the mounting frame 5, and the screw 9 is installed on the movable plate 7 through a built-in nut. One end of the screw 9 is connected to the output end of the power mechanism for driving the screw 9 to rotate, and is used to adjust the height of the axial flow fan 1.

[0024] In this embodiment, as Figure 1 , Figure 2 and Figure 3As shown, symmetrically distributed slide rods 8 are slidably installed through the top of the movable plate 7. A top plate 10 is installed at one end of the slide rod 8, and a bottom plate 11 is installed at the other end. The slide rod 8 and the movable plate 7 form a sliding guide fit, which converts the rotational motion of the screw 9 into the linear motion of the movable plate 7, avoiding lateral deviation or shaking during the movement and improving the stability of the axial flow fan 1 when adjusting its height.

[0025] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, a first worm gear reducer motor 6 is installed on the inner wall of the mounting bracket 5. The output shaft of the first worm gear reducer motor 6 is connected to the second connecting bracket 4 via a coupling. A second worm gear reducer motor 12 is installed on the bottom of the base plate 11. The output shaft of the second worm gear reducer motor 12 is connected to the bottom end of the screw 9 via a coupling. The upper and lower ends of the screw 9 are respectively connected to the top plate 10 and the bottom plate 11 via deep groove ball bearings to form a rotational fit.

[0026] When the first worm gear reducer motor 6 starts, it can drive the second connecting frame 4 to rotate the axial flow fan 1, the first connecting frame 2, the plasma exciter 3, the exhaust pipe 13, and the filter screen 14 as a whole, thereby realizing the angle adjustment of the axial flow fan 1 (angle adjustment range ±45°). When the second worm gear reducer motor 12 starts, it can drive the screw 9 to rotate, which drives the moving plate 7 to move up or down through the nut transmission, thereby synchronously driving the mounting frame 5, the first worm gear reducer motor 6, the second connecting frame 4, the axial flow fan 1, the first connecting frame 2, the plasma exciter 3, the exhaust pipe 13, and the filter screen 14 to achieve the overall lifting action, and the height of the axial flow fan 1 can be adjusted as needed.

[0027] In this embodiment, as Figure 1 As shown, the top plane of the top plate 10 has several sets of mounting holes along the axis of symmetry. Each set of mounting holes includes at least one screw hole and one open hole. The screw hole is used to fit a hexagonal head bolt to achieve rigid fixation, and the open hole is used to insert an S-shaped hook to achieve flexible suspension. The combination design of screw holes and open holes can select rigid fixation or flexible suspension according to the structural characteristics of the greenhouse, and adapt to different types of roof structures (such as steel frame, color steel plate, glass greenhouse, etc.).

[0028] In this embodiment, as Figure 1 , Figure 2 and Figure 3As shown, the sliding rod 8 and screw 9 between the moving plate 7 and the top plate 10, and between the moving plate 7 and the bottom plate 11, are all fitted with rubber corrugated telescopic protective tubes. The two ends of the protective tubes form a sealed connection with the moving plate 7 and the top plate 10 / bottom plate 11, respectively. The protective tubes can physically isolate the sliding rod 8 and screw 9, preventing corrosive media such as pesticides and fertilizers from contacting the sliding rod 8 and screw 9, thereby extending their service life and also helping to improve the stability of the sliding rod 8 and screw 9 during operation.

[0029] In this embodiment, as Figure 1 As shown, the air outlet side of the axial flow fan 1 is detachably connected to the exhaust pipe 13 via a flange. Both the air inlet side of the axial flow fan 1 and the air outlet side of the exhaust pipe 13 are equipped with filters 14 to prevent dust or impurities from entering the interior of the axial flow fan 1 and causing impeller wear or motor failure.

[0030] The specific operating procedure of this utility is as follows: First, the equipment is adapted and installed on the greenhouse roof structure through the mounting hole group of the top plate 10 (either the screw holes can be used for rigid fixing with hexagonal head bolts or the holes can be used for flexible suspension with S-shaped hooks).

[0031] When the angle of the axial flow fan 1 needs to be adjusted, the first worm gear reducer motor 6 is started by the control system. Its output shaft transmits power to the second connecting frame 4 through the coupling, thereby driving the axial flow fan 1, the first connecting frame 2, the plasma exciter 3, the exhaust pipe 13 and the filter screen 14 connected to the second connecting frame 4 to rotate as a whole, so as to realize the adjustment of the horizontal angle of the axial flow fan 1 and meet the air supply requirements in the ±45° direction.

[0032] When the height of the axial flow fan 1 needs to be adjusted, the control system starts the second worm gear reducer motor 12, whose output shaft drives the screw 9 to rotate through the coupling. Since the moving plate 7 is connected to the screw 9 through the built-in nut, and the symmetrically distributed sliding rods 8 that are slidably installed through the top of the moving plate 7 form a sliding guide fit with the moving plate 7, the rotational motion of the screw 9 is converted into the linear motion of the moving plate 7. In this process, the sliding rods 8 effectively avoid lateral offset or swaying when the moving plate 7 moves, improving the stability of the height adjustment of the axial flow fan 1. The up and down displacement of the moving plate 7 will synchronously drive the mounting frame 5, the first worm gear reducer motor 6, the second connecting frame 4, the axial flow fan 1 and other related components to rise and fall as a whole, thereby realizing the on-demand adjustment of the height of the axial flow fan 1 and adjusting the axial flow fan 1 to a suitable height.

[0033] When using the equipment for air handling: Plasma exciter 3 generates plasma through high-voltage discharge. The exciter consists of multiple electrodes. Under the action of high voltage, a large number of active gas molecules are generated in the excitation chamber. Then, the active gas molecules are discharged through the outlet (the active gas molecule outlet of plasma exciter 3 is located on the air inlet side of axial flow fan 1. The airflow passes through plasma exciter 3 to excite the purification zone and decompose pollutants). At the same time, axial flow fan 1 starts. After the ambient air is initially intercepted by the air inlet side filter 14, it is drawn in and pressurized by axial flow fan 1 and finally discharged directionally through exhaust pipe 13 (the outlet is also equipped with filter 14), realizing the purification and air supply function with adjustable height and adjustable angle.

[0034] The present invention has been described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A system for circulating air in a greenhouse, comprising an axial fan (1) and a screw (9), characterized in that: The outer wall of the axial flow fan (1) is connected to the plasma exciter (3) through the first connecting frame (2), and is rotatably connected to the mounting frame (5) through the second connecting frame (4); the mounting frame (5) is provided with a power mechanism for driving the second connecting frame (4) to rotate horizontally, and for adjusting the horizontal angle of the axial flow fan (1); a movable plate (7) is installed on the top of the mounting frame (5), and a screw (9) is installed on the movable plate (7) through a built-in nut; one end of the screw (9) is connected to the output end of the power mechanism for driving the screw (9) to rotate, and for adjusting the height of the axial flow fan (1).

2. The air circulation system for a greenhouse according to claim 1, characterized in that: The top of the movable plate (7) is slidably mounted with symmetrically distributed sliding rods (8). One end of the sliding rod (8) is equipped with a top plate (10), and the other end is equipped with a bottom plate (11). The sliding rod (8) and the movable plate (7) form a sliding guide fit.

3. The air circulation system for a greenhouse according to claim 2, characterized in that: The inner wall of the mounting bracket (5) is provided with a first worm gear reducer motor (6). The output shaft of the first worm gear reducer motor (6) is connected to the second connecting bracket (4) through a coupling. The bottom of the base plate (11) is equipped with a second worm gear reducer motor (12). The output shaft of the second worm gear reducer motor (12) is connected to the bottom end of the screw (9) through a coupling. The upper and lower ends of the screw (9) are rotatably connected to the top plate (10) and the bottom plate (11) respectively.

4. The air circulation system for a greenhouse according to claim 2, characterized in that: The top plane of the top plate (10) has several sets of mounting holes along the axis of symmetry. Each set of mounting holes includes at least one screw hole and one open hole. The screw hole is used to cooperate with a hexagonal head bolt to achieve rigid fixation, and the open hole is used to insert an S-shaped hook to achieve flexible suspension.

5. The air circulation system for a greenhouse according to claim 1, characterized in that: The sliding rod (8) and screw (9) between the movable plate (7) and the top plate (10) and between the movable plate (7) and the bottom plate (11) are all fitted with rubber corrugated telescopic protective tubes. The two ends of the protective tubes are respectively sealed to the movable plate (7), the top plate (10) and the bottom plate (11).

6. The air circulation system for a greenhouse according to claim 1, characterized in that: The air outlet side of the axial flow fan (1) is detachably connected to the exhaust pipe (13) via a flange. Both the air inlet side of the axial flow fan (1) and the air outlet side of the exhaust pipe (13) are equipped with filters (14).

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