Intelligent agricultural greenhouse

Abstract

The invention relates to the technical field of intelligent greenhouses, in particular to an intelligent agricultural greenhouse which comprises a greenhouse body, a water tank arranged at the bottom of one side of the greenhouse body, a water curtain arranged above the water tank, a pipe system communicated with the water curtain and a control system, and the pipe system comprises a first pipeline communicated with the top end of the water curtain through the water tank; a rotating connector is arranged on a pipeline of the first pipeline, the water outlet end of the water base is communicated with a second pipeline, the second pipeline is communicated with a branch pipe, the control system comprises a rotating frame connected to the second pipeline and a driving device arranged on the rotating frame, and the cleaning device is driven by water flow energy of the system. And strong, constant-speed and full-coverage washing on the inner surface of the water curtain is realized. Dust, impurities, algae and water scale deposited on deep holes and surfaces of the water curtain can be effectively removed, and the core pain point of water curtain blockage is fundamentally solved. And the effective working time and the service life of the water curtain are obviously prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of smart greenhouses, and in particular to a smart agricultural greenhouse. Background Art

[0002] Greenhouses are widely used in agricultural production, creating controlled microenvironments to enable off-season crop cultivation or optimize growing conditions. However, particularly during the hot summer months, intense solar radiation causes temperatures inside greenhouses to rise dramatically, far exceeding the ideal growth range for crops. Excessive temperatures not only inhibit crop physiological processes such as photosynthesis and respiration, but can also lead to water stress, flower and fruit drop, reduced quality, and even plant death. Therefore, efficient and economical cooling technologies are crucial for ensuring stable summer production in greenhouses. A wet curtain-fan cooling system is currently a widely adopted active cooling method in greenhouses. This system typically involves installing a wet curtain (usually made of a special, highly absorbent, honeycomb-shaped material) on one wall of the greenhouse (facing the wind) and a negative pressure fan on the opposite wall. When the fan is activated, it forcibly extracts air from the greenhouse, creating a negative pressure inside. This negative pressure forces the hot outside air into the greenhouse through the side with the wet curtain (the air inlet). When outside air passes through the moistened water curtain, it exchanges heat with the water film on the curtain surface, evaporating and absorbing heat, significantly lowering its own temperature (the principle of evaporative cooling). This also helps to remove dust. This cooled and dust-free air enters the greenhouse and is eventually exhausted by the fan, creating a continuous airflow cycle that lowers the overall temperature inside the greenhouse.

[0003] Existing water curtains suffer from the following technical issues: insufficient wetting of the curtain or excessively rapid water flow, leading to water being drained away before it fully evaporates, impacting the curtain's overall evaporation efficiency and cooling effectiveness. Poor quality water curtains can lead to uneven cooling. While the porous structure of the curtain material absorbs water for evaporation and cooling, it also readily absorbs airborne pollutants such as dust, impurities, and algae spores. This blockage of water and air passages not only significantly reduces the curtain's air permeability (increasing fan energy consumption) and hinders air penetration, but also significantly reduces the curtain's water absorption and evaporation efficiency, directly weakening the effectiveness of the entire cooling system. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides a smart agricultural greenhouse, including a greenhouse body, a water trough arranged at the bottom of one side of the greenhouse body, a water curtain arranged above the water trough, a pipe system connected to the water curtain and a control system, the pipe system includes a first pipe connected from the water trough to the top of the water curtain, and a rotary joint is provided on the pipe of the first pipe. The pipe system also includes a two-way pipe connected to the rotary joint, the other end of the two-way pipe is connected to a water seat, the water outlet end of the water seat is connected to a second pipe, and the second pipe is connected to a branch pipe. The control system includes a rotating frame connected to the second pipe and a driving device arranged on the rotating frame, one branch of the branch pipe is connected to the driving device, and the other branch is connected to a third pipe. The third pipe is provided with a nozzle, and the control system also includes a screw driven by the driving device, and the third pipe is driven on the screw. The third pipe is driven from top to bottom relative to the surface of the water curtain by the screw.

[0005] As a further preferred embodiment, two water curtains are spliced ​​together to form a water curtain group, the first pipe is arranged horizontally above the water curtain group, and the left and right end pipe openings of the first pipe are respectively connected to a water curtain, and at least two rotary joints are provided on the first pipe, each rotary joint corresponds to the top of a water curtain, and the water outlet of each rotary joint is connected to a two-way pipe.

[0006] As a further preferred embodiment, the shape of the rotating frame is consistent with the water curtain. When the two-way pipe rotates around the rotary joint, it carries the second pipe through the water seat, and the second pipe carries the rotating frame to rotate relative to the front surface of the water curtain.

[0007] As a further preference, the screw is vertically mounted on one end of the rotating frame through a bearing, and the other end of the rotating frame is vertically connected to a guide tube symmetrical to the screw. The third pipe is horizontally arranged in the rotating frame, and one end of the third pipe extends to one end of the rotating frame and is provided with a transmission seat. The transmission seat is transmission-connected to the screw, and the other end of the third pipe is provided with a sliding hole, which is sleeved on the guide tube.

[0008] As a further preference, the driving device includes a gear box mounted on a rotating frame and an impeller and a gear set assembled in the gear box. The end of the screw is assembled in the gear box and connected to the rotating shaft where the gear set is located. The impeller is engaged with the gear set through a gear transmission relationship. A branch pipe 1 of the branch pipe is connected to the gear box of the driving device and aligned with the impeller. Another branch pipe 2 of the branch pipe is connected between the water outlet end of the gear box and the third pipe with a flexible pipe. When water is added to the first pipe, part of the water flows onto the water curtain, and the other part of the water enters the two-way pipe through the rotary joint, enters the gear box from the two-way pipe and is sprayed onto the impeller, which is converted into the impeller driving the screw to rotate.

[0009] As a further preference, the gear box and the gear set and impeller in the gear box are made of light plastic.

[0010] As a further preference, an electromagnetic reversing valve is installed on the second pipeline, and a branch pipe three is connected to the electromagnetic reversing valve. Branch pipe one and branch pipe three are connected to the electromagnetic reversing valve, and the other end of branch pipe three is connected to the water outlet end of the gear box. Two travel switches are installed on the rotating frame, one travel switch is close to one end of the screw, and the other travel switch is close to the other end of the screw.

[0011] As a further preference, a plurality of nozzles are provided on the third pipe, and the plurality of nozzles are evenly distributed along the length direction of the third pipe.

[0012] The beneficial effects of the present invention compared to the prior art are: 1. Significantly improves the cooling efficiency and stability of the water curtain: The nozzle sprays vertically and moves at a constant speed with the screw, achieving infiltration of the inner surface of the water curtain. This effectively overcomes the unevenness of traditional gravity water distribution, significantly improves the quality of the water curtain, and ensures that the water curtain is always in an optimally wet state, thereby maximizing the evaporative cooling effect, improving overall cooling efficiency, and maintaining long-term stable cooling performance.

[0013] 2. Efficient, automated cleaning solves clogging problems: Utilizing the system's own water flow energy to drive the cleaning device, it provides powerful, uniform, and comprehensive flushing of the inner surface of the water curtain. This effectively removes dust, impurities, algae, and scale deposited in the deep pores and on the surface of the water curtain, fundamentally resolving the core problem of water curtain clogging. This significantly extends the effective operating time and service life of the water curtain.

[0014] 3. Reduced Operation and Maintenance Costs and Production Impact: The fully automated cleaning process eliminates the expensive, inefficient, time-consuming, and labor-intensive manual cleaning process. This eliminates the risk of temperature runaway in the greenhouse and the negative impact on crop growth caused by the need to suspend the cooling system during manual cleaning, ensuring continuous and stable production. It also reduces the maintenance cost and replacement frequency of the water curtain. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the distribution of the piping system, control system, and water curtain in a smart agricultural greenhouse provided by an embodiment of the present invention; Figure 2 A smart agricultural greenhouse provided by the embodiment of the present invention is composed of Figure 1 The enlarged schematic diagram of part A is shown; Figure 3 A schematic diagram of the position of the pipe system, control system and water curtain in a smart agricultural greenhouse provided by an embodiment of the present invention.

[0016] In the figure: 10, water tank; 20, water curtain; 30, piping system; 310, first pipeline; 320, rotary joint; 330, two-way pipe; 340, water seat; 350, second pipeline; 360, branch pipe; 3601, branch pipe one; 3602, branch pipe two; 370, third pipeline; 380, nozzle; 390, transmission seat; 40, control system; 410, rotating frame; 4101, limit switch; 420, driving device; 4201, gear box; 4202, impeller; 4203, gear set; 430, screw; 440, guide pipe; 3501, electromagnetic reversing valve; 3502, branch pipe three. DETAILED DESCRIPTION

[0017] The above and other embodiments and advantages of the present invention are clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments.

[0018] In one embodiment, Figure 1-Figure 3 As shown: This embodiment provides a smart agricultural greenhouse, including a greenhouse body, a water tank 10 arranged at the bottom of one side of the greenhouse body, a water curtain 20 arranged above the water tank 10, a pipe system 30 connected to the water curtain 20, and a control system 40. The pipe system 30 includes a first pipe 310 connected from the water tank 10 to the top of the water curtain 20, a rotary joint 320 is provided on the pipe of the first pipe 310, and the pipe system 30 also includes a two-way pipe 330 connected to the rotary joint 320, the other end of the two-way pipe 330 is connected to a water seat 340, and the water outlet end of the water seat 340 is connected to a second pipe 3 50, the second pipe 350 is connected to a branch pipe 360, the control system 40 includes a rotating frame 410 connected to the second pipe 350 and a driving device 420 provided on the rotating frame 410, one branch of the branch pipe 360 ​​is connected to the driving device 420, and the other branch is connected to a third pipe 370, and a nozzle 380 is provided on the third pipe 370. The control system 40 also includes a screw 430 driven by the driving device 420, and the third pipe 370 is driven on the screw 430. Driven by the screw 430, the third pipe 370 sprays from top to bottom relative to the surface of the water curtain 20.

[0019] The core of the working principle of this invention is to utilize the piping system of water curtain water supply and expand it into an intelligent system with automatic cleaning function. The specific process is as follows: Basic water supply and water curtain formation: After the control system is activated, a water pump (not shown, typically located near the water tank) pumps water from the water tank 10 and transports it upward through the first pipe 310 to the top of the water curtain 20. Once the water reaches the top of the water curtain, it flows down along the surface of the water curtain under gravity, forming a basic water curtain. This is the prerequisite for the water curtain to achieve its evaporative cooling effect.

[0020] Water flow diversion and power acquisition: A rotary joint 320 is installed on the pipeline of the first pipeline 310 near the top of the water curtain. One end of the two-way pipe 330 is connected to the first pipeline 310 through the rotary joint 320, and the other end is connected to the water seat 340 at a fixed position. The water outlet end of the water seat 340 is connected to the second pipeline 350. When the water flows upward through the first pipeline 310, a part of the water flow will enter the two-way pipe 330 through the rotary joint 320, and then enter the second pipeline 350 after flowing through the water seat 340. A branch pipe 360 ​​is connected to the second pipeline 350. The water flow entering the second pipeline 350 is diverted at the branch pipe 360: one branch flow path leads to the drive device 420. This part of the water flow serves as a power source to drive the drive device 420 to work. The drive device 420 is usually designed as a mechanical device or device that drives the screw 430 to rotate, and uses the pressure and kinetic energy of the water flow to convert into rotational mechanical energy of the drive device 420. The drive unit 420 is mounted on the rotating frame 410, and the rotational power it generates is output to the screw 430. By driving the screw 430 to rotate, the screw 430 drives the third pipe 370 to move linearly. Another branch flow path of the branch pipe 360 ​​flows into the third pipe 370, and then is sprayed through the nozzle 380. The third pipe 370 is connected to the screw 430 via an adapted threaded transmission seat 390. The operator controls the rotating frame 410, rotating it downward, so that the nozzle 380 is precisely oriented toward the inner surface of the water curtain 20, that is, the side facing the interior of the greenhouse, and adjusts the direction of the water discharge from the nozzle 380 to be substantially perpendicular to the inner surface of the water curtain. When the water flows through the third pipe 370 and reaches the nozzle 380, it forms a high-speed, concentrated water column or water mist, which is sprayed vertically onto the inner surface of the water curtain. Simultaneously, the screw 430 rotates at a constant speed under the drive unit 420. Because the third pipe 370 and the screw 430 are driven, the rotational motion of the screw 430 is converted into uniform linear motion of the third pipe 370 and its nozzle 380, which is typically designed to move vertically along the axis of the screw. Therefore, while the nozzle 380 sprays water downward, it also moves downward at a uniform speed, driven by the screw 430.

[0021] The above-described motion process produces the following technical effects: First, it enhances the quality of the water curtain: the vertically ejected water from nozzle 380, upon impacting the inner surface of the water curtain, more effectively soaks the curtain material, allowing the water to more fully penetrate deep into the curtain and diffuse to both sides. This significantly improves the uniformity, coverage, and wetness saturation of the water curtain, thereby enhancing the evaporative cooling efficiency of the curtain. Second, it provides automatic flushing and cleaning: the high-speed vertical jet of water exerts a powerful impact on the inner surface of the water curtain. This impact effectively washes away and removes dust, algae, impurities, and scale adhering to the inner walls and surface of the pores of the water curtain. Simultaneously, the nozzle 380 moves at a constant speed from top to bottom, ensuring that the entire inner surface of the water curtain is evenly and thoroughly rinsed. The washed dirt falls into the water tank 10 at the bottom with the water flow. This process achieves efficient and automated cleaning of the water curtain.

[0022] In another embodiment, Figure 1 、 Figure 2 As shown, the driving device 420 includes a gear box 4201 mounted on the rotating frame 410 and an impeller 4202 and a gear set 4203 assembled in the gear box 4201. The end of the screw 430 is assembled into the gear box 4201 and connected to the rotating shaft where the gear set 4203 is located. The impeller 4202 is engaged with the gear set 4203 through a gear transmission relationship. A branch pipe 3601 of the branch pipe 360 ​​is connected to the gear box 420 of the driving device 420. 1 and aligned with the impeller 4202. Another branch pipe 2 3602 of the branch pipe 360 ​​is connected between the water outlet end of the gear box 4201 and the third pipe 370 using a flexible pipe. When water is added to the first pipe 310, part of the water flows onto the water curtain 20, and the other part of the water enters the two-way pipe 330 through the rotary joint 320, enters the gear box 4201 from the two-way pipe 330, and is sprayed onto the impeller 4202, which is converted into the impeller 4202 driving the screw 430 to rotate.

[0023] Based on the above, an operator or motor controls the downward rotation and positioning of rotating frame 410, ensuring that nozzle 380 is vertically aligned with the inner surface of water curtain 20. The control system activates the water pump, and water flows upward through first pipe 310 to water curtain 20, forming a water curtain inside water curtain 20. At the same time, a portion of the water flows through rotary joint 320 and enters two-way pipe 330. From there, the water flows into gearbox 4201 of drive device 420. Specifically, the water flows through branch pipe 1 3601 and enters gearbox 4201, directly spraying onto impeller 4202. The water impacts impeller 4202, causing it to rotate. The rotational power of impeller 4202 is transmitted through meshing gear set 4203. Gear set 4203 comprises multiple meshing gears for speed reduction. The output gear of gear set 4203 drives screw 430 to rotate synchronously. After the water enters gearbox 4201 and strikes impeller 4202, some of its energy is utilized to drive impeller 4202 and gear set 4203, but the water itself remains. This portion of the water is discharged from branch pipe 2 3602 at the outlet of gearbox 4201 into third pipe 370, and ultimately, is directed perpendicularly toward water curtain 20 through nozzle 380.

[0024] It should be further explained that, depending on the construction size of the greenhouse, two water curtains 20 are often spliced ​​together to form a water curtain group. For example, a greenhouse with a length of 30 meters uses 10 sets of water curtain groups. The first pipe 310 is arranged horizontally above the water curtain group according to the length of each water curtain group, and the left and right end pipe openings of the first pipe 310 are respectively connected to a water curtain 20. At least two rotary joints 320 are provided on the first pipe 310, each rotary joint 320 corresponds to the top of a water curtain 20, and the water outlet of each rotary joint 320 is connected to a two-way pipe 330. The rotating frame 410 and the driving device 420 are arranged above the water curtain group relative to the number of water curtain groups to form an arrangement, thereby meeting the cleaning and efficient use of each water curtain 20.

[0025] It should be further explained that the shape of the rotating frame 410 is consistent with that of the water curtain 20, for example Figure 1 If the water curtain 20 in the figure is rectangular, then the rotating frame 410 is also rectangular. The drive device 420 is located at a lower corner of the rotating frame 410. When the rotating frame 410 deflects downward, the drive device 420 rotates upward without colliding with the first pipe 310. This ensures that the rotating frame 410 is parallel to the inside of the water curtain 20 and that the nozzle 380 sprays water perpendicularly to the water curtain 20. When the two-way pipe 330 rotates around the rotating joint 320, it drives the second pipe 350 through the water seat 340, and the second pipe 350 drives the rotating frame 410 to rotate relative to the front surface (inside) of the water curtain 20. To achieve intelligent assembly, a motor drive can be provided on the rotating frame 410. When the motor drives the rotating frame 410 to rotate, the rotating frame 410 drives all components to rotate to the inside of the water curtain 20.

[0026] It needs to be further explained that, Figure 1 、 Figure 2 As shown, for example, if the rotating frame 410 is rectangular, the screw 430 is vertically mounted on one end of the rotating frame 410 via a bearing. The other end of the rotating frame 410 is vertically connected to a guide tube 440 symmetrical to the screw 430. The third pipe 370 is horizontally arranged within the rotating frame 410. One end of the third pipe 370 extends to one end of the rotating frame 410 and is provided with a transmission seat 390. The transmission seat 390 is drivingly connected to the screw 430. The other end of the third pipe 370 is provided with a sliding hole, which is sleeved on the guide tube 440. When the rotating frame 410 rotates to be parallel to the inner side of the water curtain 20, the driving device 420 drives the screw 430 to rotate, which in turn drives the transmission seat 390 to move linearly. The transmission seat 390 drives the third pipe 370 to move linearly from top to bottom relative to the inner side of the water curtain 20. The other end of the third pipe 370 engages with the guide tube 440 through the sliding hole to ensure smooth movement.

[0027] It should be further explained that the gear box 4201 and the gear set 4203 and the impeller 4202 in the gear box 4201 are made of light plastic, which is light in weight and facilitates the reasonable realization of water as a power drive.

[0028] It needs to be further explained that, Figure 2 、 Figure 3 As shown, an electromagnetic reversing valve 3501 is installed on the second pipe 350, and a branch pipe three 3502 is connected to the electromagnetic reversing valve 3501. Branch pipe one 3601 and branch pipe three 3502 are connected to the electromagnetic reversing valve 3501. The other end of branch pipe three 3502 is connected to the water outlet end of the gear box 4201. Two travel switches 4101 are installed on the rotating frame 410, one travel switch 4101 is close to one end of the screw 430, and the other travel switch 4101 is close to the other end of the screw 430.

[0029] Under normal conditions, water first enters the electromagnetic reversing valve 3501 from the second pipe 350, and then enters the gear box 4201 through the branch pipe 1 3601 and sprays toward the impeller 4202, causing the impeller 4202 to drive the screw 430 to rotate, which in turn drives the transmission base 390 to move linearly, and the transmission base 390 drives the third pipe 370 to move linearly, for example, from top to bottom (the third pipe 370 carries the nozzle 380 and moves from the inner surface of the water curtain 20 from top to bottom). At this time, part of the water flows from the water outlet end of the gear box 4201. The branch pipe 2 3602 discharges into the third pipe 370 and finally projects vertically onto the water curtain 20 through the nozzle 380. When the third pipe 370 reaches the limit switch 4101 on the bottom side of the rotating frame 410, the limit switch 4101 on the bottom side triggers a signal and feeds the signal back to the controller, which controls the electromagnetic reversing valve 3501 to change the path to the branch pipe 3 3502. At this time, the branch pipe 2 3602 is closed, and the branch pipe 3 3502 is used to guide the water flow into the opposite direction of the gear box 4201. The impeller 4202 is sprayed with water, so that the impeller 4202 drives the screw 430 to rotate in the opposite direction, and the screw 430 drives the transmission base 390 to move in the opposite direction linearly, and the transmission base 390 drives the third pipe 370 to move in the opposite direction linearly, for example, from bottom to top (the third pipe 370 moves from the inner surface of the water curtain 20 from bottom to top with the nozzle 380). At this time, part of the water flow will be discharged from the water outlet end of the gear box 4201 into the third pipe 370, and can also be vertically directed to the water curtain 20 through the nozzle 380 until the third pipe 370 is When the third pipe 370 moves upward to the vicinity of the travel switch 4101 on the top side of the rotating frame 410, the travel switch 4101 on the top side triggers a signal and feeds the signal back to the controller. The controller controls the electromagnetic reversing valve 3501 to change the passage to the branch pipe 2 3602 again. The stroke position of the third pipe 370 is used to trigger the upper and lower travel switches 4101 to switch the two-way control mode of the electromagnetic reversing valve 3501, so that the third pipe 370 can realize intelligent control for the upper and lower cleaning of the water curtain 20, thereby improving the cleaning efficiency.

[0030] It should be further explained that a plurality of nozzles 380 are provided on the third pipe 370, and the nozzles 380 are evenly distributed along the length direction of the third pipe 370. These nozzles 380 increase the spray range of the water curtain 20 as the third pipe 370 rises and falls, thereby achieving spraying without dead angles.

[0031] It should be further explained that the second branch pipe 3602 is a flexible pipe to accommodate the synchronous displacement of the third pipe 370 during movement.

[0032] The above orientation designations do not represent the specific orientations of the components in this implementation scheme. This implementation scheme is only for the convenience of describing the scheme, and the orientations are described relatively with reference to the figures. In essence, the specific orientations of the components are described based on their actual installation and actual use, as well as the customary orientations of those skilled in the art. This is hereby explained.

[0033] The specific embodiments described above further illustrate the purpose of the present invention, technical solutions, and beneficial effects. It should be understood that the above description is merely a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. In particular, it should be noted that for those skilled in the art, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A smart agricultural greenhouse, characterized in that: The invention comprises a greenhouse body, a water tank (10) arranged at the bottom of one side of the greenhouse body, a water curtain (20) arranged above the water tank (10), a pipe system (30) connected to the water curtain (20), and a control system (40), wherein the pipe system (30) comprises a first pipe (310) connected from the water tank (10) to the top of the water curtain (20), a rotary joint (320) is provided on the pipe of the first pipe (310), and the pipe system (30) further comprises a two-way pipe (330) connected to the rotary joint (320), the other end of the two-way pipe (330) is connected to a water seat (340), the water outlet end of the water seat (340) is connected to a second pipe (350), and the second pipe (350) The control system (40) includes a rotating frame (410) connected to the second pipe (350) and a driving device (420) arranged on the rotating frame (410). One branch of the branch pipe (360) is connected to the driving device (420), and the other branch is connected to the third pipe (370). The third pipe (370) is provided with a spray head (380). The control system (40) further includes a screw (430) driven by the driving device (420). The third pipe (370) is driven by the screw (430). Driven by the screw (430), the third pipe (370) sprays from top to bottom relative to the surface of the water curtain (20).

2. The smart agricultural greenhouse according to claim 1, characterized in that: Two water curtains (20) are spliced ​​together to form a water curtain group. A first pipe (310) is arranged horizontally above the water curtain group, and the left and right end pipe openings of the first pipe (310) are respectively connected to a water curtain (20). At least two rotary joints (320) are provided on the first pipe (310), each rotary joint (320) corresponds to the top of a water curtain (20), and the water outlet of each rotary joint (320) is connected to a two-way pipe (330).

3. The smart agricultural greenhouse according to claim 2, characterized in that: The shape of the rotating frame (410) is consistent with that of the water curtain (20). When the two-way pipe (330) rotates around the rotary joint (320), it carries the second pipe (350) through the water seat (340), and the second pipe (350) carries the rotating frame (410) to rotate relative to the front surface of the water curtain (20).

4. The smart agricultural greenhouse according to claim 3, characterized in that: The screw (430) is vertically mounted on one end of the rotating frame (410) through a bearing. The other end of the rotating frame (410) is vertically connected to a guide tube (440) symmetrical to the screw (430). The third pipe (370) is horizontally arranged in the rotating frame (410). One end of the third pipe (370) extends to one end of the rotating frame (410) and is provided with a transmission seat (390). The transmission seat (390) is transmission-connected to the screw (430). The other end of the third pipe (370) is provided with a sliding hole, which is sleeved on the guide tube (440).

5. The smart agricultural greenhouse according to claim 4, characterized in that: The driving device (420) includes a gear box (4201) mounted on a rotating frame (410) and an impeller (4202) and a gear set (4203) assembled in the gear box (4201). The end of the screw (430) is assembled in the gear box (4201) and connected to the rotating shaft where the gear set (4203) is located. The impeller (4202) is engaged with the gear set (4203) through a gear transmission relationship. A branch pipe (360) is connected to the gear box (4201) of the driving device (420). The second branch pipe (3602) of the branch pipe (360) is connected between the water outlet end of the gear box (4201) and the third pipe (370) by a flexible pipe. When water is supplied to the first pipe (310), a portion of the water flows onto the water curtain (20), and the other portion of the water enters the two-way pipe (330) through the rotary joint (320), enters the gear box (4201) through the two-way pipe (330), and is sprayed onto the impeller (4202), thereby converting the impeller (4202) into a driving screw (430) for rotation.

6. The smart agricultural greenhouse according to claim 5, characterized in that: The gear box (4201) and the gear set (4203) and the impeller (4202) in the gear box (4201) are made of light plastic.

7. The smart agricultural greenhouse according to claim 6, characterized in that: An electromagnetic reversing valve (3501) is installed on the second pipeline (350), and a branch pipe (3502) is connected to the electromagnetic reversing valve (3501). The branch pipe (3601) and the branch pipe (3502) are connected to the electromagnetic reversing valve (3501), and the other end of the branch pipe (3502) is connected to the water outlet end of the gear box (4201). Two travel switches (4101) are installed on the rotating frame (410), one travel switch (4101) is close to one end of the screw (430), and the other travel switch (4101) is close to the other end of the screw (430).

8. The smart agricultural greenhouse according to claim 7, characterized in that: A plurality of nozzles (380) are provided on the third pipe (370), and the plurality of nozzles (380) are evenly distributed along the length direction of the third pipe (370).

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