A wet curtain cooling structure for a greenhouse

Abstract

The utility model relates to the technical field of wet curtain cooling, and discloses a wet curtain cooling structure for greenhouse, which comprises a frame, and also comprises: a cooling mechanism and a protection mechanism. The cooling mechanism includes a water tank, a wet curtain main body, a recovery tank, an adjustment device, a first control switch and a second control switch. In the utility model, when the water supply of the adjustment device is too fast, a large amount of water accumulates inside the recovery tank until the water level rises to the position of the second control switch. The second control switch controls the adjustment device to reduce the water flow rate, avoiding water overflowing from the recovery tank and causing waste. When the water supply of the adjustment device is too slow, the water in the recovery tank decreases until the first control switch is exposed. The first control switch controls the adjustment device to increase the water flow rate, so that the water level of the reflux in the recovery tank always remains between the first control switch and the second control switch, ensuring sufficient water flowing through the wet curtain main body while avoiding waste, which is beneficial to avoiding resource waste and ensuring the heat dissipation efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of evaporative cooling structures, specifically to an evaporative cooling structure for greenhouses. Background Technology

[0002] Greenhouses are facilities that allow light to pass through while maintaining (or heating) the soil. They provide a growing season and increase yields during seasons when plants are not suited to growing conditions. They are often used for cultivating or raising seedlings of warm-weather vegetables, flowers, and trees during cold seasons. To prevent the inner walls of greenhouses from becoming too hot during high temperatures, ventilation and heat dissipation structures are needed to cool the greenhouse. Evaporative cooling pads are a common cooling method. Evaporative cooling pads are a highly efficient cooling technology that achieves cooling through the principle of water evaporation and heat absorption. They are widely used in enclosed spaces such as agricultural greenhouses, farms, and industrial plants. The core principle is to use the porous structure of the evaporative cooling pad material to form a water film, which absorbs heat as air flows through it, thereby cooling the greenhouse.

[0003] Insufficient technology: Existing evaporative cooling structures are mostly installed directly on the side of the greenhouse. When not in use, the evaporative curtains are directly exposed to the air, lacking a protective structure and easily damaged. At the same time, impurities in the air can easily adhere to the evaporative curtains, affecting their use. The external environment affects the water evaporation rate. Existing evaporative cooling structures spray water directly onto the evaporative curtains through water pipes to form a water film. It is impossible to accurately control the water supply rate, which can easily lead to insufficient water supply affecting heat dissipation efficiency, or excessive water causing waste. Utility Model Content

[0004] The purpose of this utility model is to provide a wet curtain cooling structure for greenhouses to solve the problems existing in the background art.

[0005] The embodiments of this utility model are implemented as follows:

[0006] A greenhouse evaporative cooling structure includes a frame, a cooling mechanism, and a protective mechanism. The bottom inner wall of the frame is fixedly connected to the bottom of the cooling mechanism, and the bottom of the protective mechanism is movably connected to the bottom inner wall of the frame. The cooling mechanism includes a water trough, the top of which is fixedly connected to the top inner wall of the frame. An evaporative cooling pad is fixedly connected to the bottom of the water trough, and a water outlet is provided at the bottom of the water trough corresponding to the position of the evaporative cooling pad. A recycling bin is fixedly connected to the bottom of the evaporative cooling pad, and the bottom of the recycling bin is fixedly connected to the bottom inner wall of the frame. An adjusting device is fixedly connected to the side of the water trough, and a water storage tank is fixedly connected to the side of the adjusting device. A first control switch is fixedly connected to the bottom inner wall of the recycling bin, and a second control switch is fixedly connected to the side inner wall of the recycling bin.

[0007] Furthermore, the structure of the first control switch is the same as that of the second control switch, with the second control switch located above the first control switch.

[0008] Furthermore, the adjusting device includes a support frame, a connecting pipe fixedly sleeved on the side of the support frame, a movable pipe movably sleeved on the side of the connecting pipe, a fixed pipe movably sleeved on the side of the movable pipe, a fixed connection on the side of the fixed pipe to the side of the water tank, a fixed connection on the side of the support frame to the side of the water tank, a third meniscus fixedly connected to the inner wall of the side of the fixed pipe, a second meniscus fixedly connected to the inner wall of the side of the movable pipe, and a first meniscus fixedly connected to the inner wall of the side of the connecting pipe.

[0009] Furthermore, a stepper motor is fixedly connected to the side of the water tank, and a first worm gear is fixedly connected to the output shaft of the stepper motor. A first worm wheel is fixedly sleeved on the side of the movable tube, and the bottom end of the first worm wheel meshes with the top end of the first worm gear.

[0010] Furthermore, the first control switch includes a base, the bottom end of which is fixedly connected to the inner wall of the bottom end of the recycling bin, a buffer spring is fixedly connected to the inner wall of the bottom end of the base, a pressure switch is fixedly connected to the top end of the buffer spring, a connecting rod is movably connected to the inner wall of the side of the base, and a float is fixedly connected to the top end of the connecting rod.

[0011] Furthermore, the protective mechanism includes a protective plate, the bottom end of which is fixedly sleeved with a mounting shaft, and the bottom end of the mounting shaft is movably sleeved with the inner wall of the bottom end of the frame.

[0012] Furthermore, the frame has an internal cavity, a servo motor is fixedly connected to the side of the cavity, a drive shaft is movably sleeved on the side of the cavity, the side of the drive shaft is fixedly connected to the output shaft of the servo motor, a second worm is fixedly sleeved on the side of the drive shaft, and a second worm wheel is fixedly sleeved on the side of the mounting shaft, with the side of the second worm wheel meshing with the side of the second worm.

[0013] Furthermore, the protective plate has a slot on its side, and a sealing strip is fixedly connected to the inner wall of the side of the frame at the position corresponding to the slot.

[0014] The beneficial effects of this utility model are:

[0015] 1. When the water supply is too fast through the regulating device, a large amount of water accumulates inside the recycling tank until the water level rises to the second control switch position. The second control switch controls the regulating device to reduce the water flow rate to prevent water from overflowing the recycling tank and causing waste. When the water supply is too slow through the regulating device, the water in the recycling tank decreases until the first control switch is exposed. The first control switch controls the regulating device to increase the water flow rate, so that the water level returning in the recycling tank is always maintained between the first control switch and the second control switch. This ensures that there is sufficient water flowing through the main body of the wet curtain while avoiding waste, which helps to ensure heat dissipation efficiency while avoiding resource waste.

[0016] 2. The servo motor drives the transmission shaft to rotate, which in turn drives the mounting shaft to rotate through the meshing of the second worm and the second worm wheel. This, in turn, rotates the protective plate, causing the sides of adjacent protective plates to fit tightly together. At this time, the slots on the sides of the adjacent protective plates engage to prevent gaps. The slots also engage with the sealing strip to prevent gaps between the protective plate and the frame, completely sealing the frame and preventing the main body of the wet curtain from being exposed to the air when the equipment is not in operation. When it is necessary to cool the greenhouse, the servo motor is started to rotate the protective plate, keeping it perpendicular to the frame and allowing the main body of the wet curtain to contact the outside environment, which helps to extend the service life of the equipment. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the protective plate structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the protective mechanism structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the cooling mechanism of this utility model;

[0022] Figure 5 For the present utility model Figure 4 Schematic diagram of the structure at point A;

[0023] Figure 6 This is a schematic cross-sectional view of the first control switch of this utility model;

[0024] Figure 7 This is a schematic diagram of the adjustment device structure of this utility model;

[0025] Figure 8 This is a schematic diagram of the internal structure of the movable tube of this utility model.

[0026] Reference numerals: 1. Frame; 101. Sealing strip; 2. Cooling mechanism; 201. Water tank; 202. Recycling bin; 203. Main body of evaporative cooling pad; 204. Adjustment device; 2041. Support frame; 2042. Fixed pipe; 2043. Connecting pipe; 2044. First worm gear; 2045. Movable pipe; 2046. First worm; 2047. Stepper motor; 2048. First meniscus; 2049. Second meniscus Plate; 2410, Third meniscus; 205, First control switch; 2051, Base; 2052, Pressure switch; 2053, Buffer spring; 2054, Float; 2055, Connecting rod; 206, Second control switch; 3, Protective mechanism; 301, Protective plate; 302, Mounting shaft; 303, Drive shaft; 304, Second worm gear; 305, Servo motor; 306, Second worm wheel; 307, Slot. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0030] Reference Figures 1 to 8This utility model provides a wet curtain cooling structure for greenhouses, including a frame 1, a cooling mechanism 2, and a protective mechanism 3. The bottom inner wall of the frame 1 is fixedly connected to the bottom of the cooling mechanism 2, and the bottom of the protective mechanism 3 is movably connected to the bottom inner wall of the frame 1. The cooling mechanism 2 includes a water trough 201, the top of which is fixedly connected to the top inner wall of the frame 1, and the bottom of the water trough 201 is fixedly connected to a wet curtain body 203. The bottom of the water trough 201 corresponds to the wet curtain body 203. A water outlet is provided at position 3. A recycling bin 202 is fixedly connected to the bottom end of the wet curtain body 203. The bottom end of the recycling bin 202 is fixedly connected to the inner wall of the bottom end of the frame 1. An adjusting device 204 is fixedly connected to the side of the water tank 201. A water storage tank is fixedly connected to the side of the adjusting device 204. A first control switch 205 is fixedly connected to the inner wall of the bottom end of the recycling bin 202. A second control switch 206 is fixedly connected to the inner wall of the side of the recycling bin 202. During use, the adjustment device 204 is connected to... When the water tank is connected and cooling is required, the protective mechanism 3 is deployed to allow the wet curtain body 203 to contact the outside environment. The regulating device 204 is opened, and water from inside the water tank enters the water tank 201. The water falls onto the wet curtain body 203 through the water outlet and flows downward along the wet curtain body 203 to form a water film for heat absorption and cooling. Excess water falls into the recovery tank 202. If the regulating device 204 supplies water too quickly, a large amount of water accumulates inside the recovery tank 202 until the water level rises to the position of the second control switch 206. The second control switch 206 controls the regulating device 204 to reduce the water flow rate to prevent water from overflowing the recovery tank 202 and causing waste. When the regulating device 204 supplies water too slowly, the water in the recovery tank 202 decreases until the first control switch 205 is exposed. The first control switch 205 controls the regulating device 204 to increase the water flow rate, so that the water level returning in the recovery tank 202 is always maintained between the first control switch 205 and the second control switch 206, ensuring sufficient water flowing through the wet curtain body 203 while avoiding waste.

[0031] The first control switch 205 has the same structure as the second control switch 206, and the second control switch 206 is located above the first control switch 205.

[0032] The adjusting device 204 includes a support frame 2041, a connecting pipe 2043 fixedly sleeved on the side of the support frame 2041, a movable pipe 2045 movably sleeved on the side of the connecting pipe 2043, a fixed pipe 2042 movably sleeved on the side of the movable pipe 2045, a side of the fixed pipe 2042 fixedly connected to the side of the water tank 201, a side of the support frame 2041 fixedly connected to the side of the water tank 201, a third meniscus 2410 fixedly connected to the inner wall of the side of the fixed pipe 2042, a second meniscus 2049 fixedly connected to the inner wall of the side of the movable pipe 2045, and a side of the connecting pipe 2043 fixedly sleeved to the inner wall of the side of the fixed pipe 2042. A first meniscus 2048 is fixedly connected. The first meniscus 2048 and the third meniscus 2410 are respectively attached to the two sides of the second meniscus 2049. The first meniscus 2048, the second meniscus 2049 and the third meniscus 2410 are all baffle structures larger than a semicircle. The third meniscus 2410 and the second meniscus 2049 have the same specifications and coincide in angle. During use, the second meniscus 2049 is rotated by the movable tube 2045 to adjust the angle between the second meniscus 2049 and the first meniscus 2048, thereby controlling the gap between them and thus controlling the water flow rate through the regulating device 204.

[0033] A stepper motor 2047 is fixedly connected to the side of the water tank 201. The output shaft of the stepper motor 2047 is fixedly connected to a first worm gear 2046. A first worm wheel 2044 is fixedly sleeved on the side of the movable tube 2045. The bottom end of the first worm wheel 2044 meshes with the top end of the first worm gear 2046. The support frame 2041 drives the first worm gear 2046 to rotate. The meshing of the first worm gear 2046 and the first worm wheel 2044 drives the movable tube 2045 to rotate.

[0034] The first control switch 205 includes a base 2051, the bottom of which is fixedly connected to the inner wall of the bottom of the recycling bin 202. A buffer spring 2053 is fixedly connected to the inner wall of the bottom of the base 2051, and a pressure switch 2052 is fixedly connected to the top of the buffer spring 2053. A connecting rod 2055 is movably connected to the inner wall of the side of the base 2051, and a float 2054 is fixedly connected to the top of the connecting rod 2055. When water inside the recycling bin 202 overflows the first control switch 205, the float 2054 moves upward under the action of buoyancy. When the connecting rod 2055 separates from the pressure switch 2052, the pressure switch 2052 sends a signal to the control terminal indicating that the water supply of the regulating device 204 is normal. When the water level is lower than the first control switch 205, the float 2054 is exposed. Under the action of gravity, the connecting rod 2055 moves downward and comes into contact with the pressure switch 2052. The pressure switch 2052 sends a signal to the control terminal indicating that the water flow of the regulating device 204 is full. The pressure switch 2052 controls the regulating device 204 to start reducing the water supply until the pressure switch 2052 separates from the connecting rod 2055 again.

[0035] The protective mechanism 3 includes a protective plate 301. The bottom end of the protective plate 301 is fixedly sleeved with an installation shaft 302. The bottom end of the installation shaft 302 is movably sleeved with the inner wall of the bottom end of the frame 1. The protective plates 301 are evenly distributed on both sides of the frame 1. When the equipment is not in use, the protective plates 301 rotate along the installation shaft 302, so that the sides of adjacent protective plates 301 are pressed tightly together, blocking the frame 1 and preventing the wet curtain body 203 from being exposed to the air. When the equipment is in use, the installation shaft 302 drives the protective plates 301 to rotate, so that the protective plates 301 are perpendicular to the frame 1, allowing the wet curtain body 203 to contact the outside world for heat dissipation and cooling.

[0036] The frame 1 has an internal cavity. A servo motor 305 is fixedly connected to the side of the cavity, and a drive shaft 303 is movably sleeved on the side of the cavity. The side of the drive shaft 303 is fixedly connected to the output shaft of the servo motor 305. A second worm gear 304 is fixedly sleeved on the side of the drive shaft 303, and a second worm wheel 306 is fixedly sleeved on the side of the mounting shaft 302. The side of the second worm wheel 306 meshes with the side of the second worm gear 304. The servo motor 305 drives the drive shaft 303 to rotate, and the meshing of the second worm gear 304 and the second worm wheel 306 drives the mounting shaft 302 to rotate.

[0037] The protective plate 301 has a slot 307 on its side, which forms an L-shaped structure. When adjacent protective plates 301 are pressed together, the slots 307 on the sides of the adjacent protective plates 301 engage with each other to prevent gaps. A sealing strip 101 is fixedly connected to the inner wall of the side of the frame 1 at the position corresponding to the slot 307. The slot 307 and the sealing strip 101 engage with each other to prevent gaps between the protective plate 301 and the frame 1.

[0038] The working principle of this utility model:

[0039] When the equipment is in use, the servo motor 305 is started to drive the transmission shaft 303 to rotate. The second worm gear 304 and the second worm wheel 306 mesh with each other, driving the mounting shaft 302 to rotate, thereby causing the protective plate 301 to rotate. This causes the sides of adjacent protective plates 301 to press tightly together. At this time, the slots 307 on the sides of the adjacent protective plates 301 engage to prevent gaps. The slots 307 also engage with the sealing strip 101 to prevent gaps between the protective plate 301 and the frame 1, completely blocking the frame 1 and preventing the wet curtain from... Body 203 is exposed to the air; when cooling of the greenhouse is required, servo motor 305 is activated to rotate protective plate 301, keeping protective plate 301 perpendicular to frame 1, so that wet curtain body 203 comes into contact with the outside; support frame 2041 is activated to drive first worm gear 2046 to rotate, and through the meshing of first worm gear 2046 and first worm wheel 2044, movable tube 2045 is driven to rotate, and second meniscus 2049 rotates with movable tube 2045 and interacts with first meniscus 2048 and third meniscus 2049. 410 Maintaining a suitable angle allows water from the storage tank to flow into the water tank 201 through the connecting pipe 2043, movable pipe 2045, and fixed pipe 2042 at a suitable flow rate. The water then falls through the water outlet at the bottom of the water tank 201 onto the wet curtain body 203, forming a water film for heat absorption and cooling. Excess water eventually falls into the recovery tank 202. As the water level in the recovery tank 202 changes during use, if the regulating device 204 supplies water too quickly, a large amount of water accumulates inside the recovery tank 202 until the water level rises to the second control switch position 206. The second control switch 206 controls the regulating device 204 to reduce the water flow rate to prevent water from overflowing the recycling tank 202 and causing waste. When the regulating device 204 supplies water too slowly, the water in the recycling tank 202 decreases until the first control switch 205 is exposed. The first control switch 205 controls the regulating device 204 to increase the water flow rate, so that the water level returning in the recycling tank 202 is always maintained between the first control switch 205 and the second control switch 206, ensuring that there is sufficient water flowing through the wet curtain body 203 while avoiding waste.

[0040] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A wet curtain cooling structure for greenhouses, comprising a frame (1), characterized in that, Also includes: The cooling mechanism (2) and the protective mechanism (3) are provided. The bottom inner wall of the frame (1) is fixedly connected to the bottom of the cooling mechanism (2), and the bottom of the protective mechanism (3) is movably connected to the bottom inner wall of the frame (1). The cooling mechanism (2) includes a water tank (201). The top of the water tank (201) is fixedly connected to the top inner wall of the frame (1). The bottom of the water tank (201) is fixedly connected to a wet curtain body (203). The bottom of the water tank (201) is provided with a position corresponding to the position of the wet curtain body (203). The water outlet is fixedly connected to the bottom of the wet curtain body (203) and a recycling box (202). The bottom of the recycling box (202) is fixedly connected to the inner wall of the bottom of the frame (1). An adjustment device (204) is fixedly connected to the side of the water tank (201). A water storage tank is fixedly connected to the side of the adjustment device (204). A first control switch (205) is fixedly connected to the inner wall of the bottom of the recycling box (202). A second control switch (206) is fixedly connected to the inner wall of the side of the recycling box (202).

2. The evaporative cooling structure for greenhouses according to claim 1, characterized in that: The structure of the first control switch (205) is the same as that of the second control switch (206), and the second control switch (206) is located above the first control switch (205).

3. The evaporative cooling structure for greenhouses according to claim 1, characterized in that: The adjusting device (204) includes a support frame (2041), a connecting pipe (2043) is fixedly sleeved on the side of the support frame (2041), a movable pipe (2045) is movably sleeved on the side of the connecting pipe (2043), a fixed pipe (2042) is movably sleeved on the side of the movable pipe (2045), the side of the fixed pipe (2042) is fixedly connected to the side of the water tank (201), the side of the support frame (2041) is fixedly connected to the side of the water tank (201), a third meniscus (2410) is fixedly connected to the inner wall of the side of the fixed pipe (2042), a second meniscus (2049) is fixedly connected to the inner wall of the side of the movable pipe (2045), and a first meniscus (2048) is fixedly connected to the inner wall of the side of the connecting pipe (2043).

4. The evaporative cooling structure for greenhouses according to claim 3, characterized in that: A stepper motor (2047) is fixedly connected to the side of the water tank (201), and a first worm gear (2046) is fixedly connected to the output shaft of the stepper motor (2047). A first worm wheel (2044) is fixedly sleeved on the side of the movable tube (2045), and the bottom end of the first worm wheel (2044) meshes with the top end of the first worm gear (2046).

5. The evaporative cooling structure for greenhouses according to claim 2, characterized in that: The first control switch (205) includes a base (2051), the bottom end of which is fixedly connected to the inner wall of the bottom end of the recycling bin (202). A buffer spring (2053) is fixedly connected to the inner wall of the bottom end of the base (2051), and a pressure switch (2052) is fixedly connected to the top end of the buffer spring (2053). A connecting rod (2055) is movably connected to the inner wall of the side of the base (2051), and a float ball (2054) is fixedly connected to the top end of the connecting rod (2055).

6. The evaporative cooling structure for greenhouses according to claim 1, characterized in that: The protective mechanism (3) includes a protective plate (301), and a mounting shaft (302) is fixedly sleeved at the bottom end of the protective plate (301). The bottom end of the mounting shaft (302) is movably sleeved with the inner wall of the bottom end of the frame (1).

7. The evaporative cooling structure for greenhouses according to claim 6, characterized in that: The frame (1) has an internal cavity. A servo motor (305) is fixedly connected to the side of the cavity. A transmission shaft (303) is movably sleeved on the side of the cavity. The side of the transmission shaft (303) is fixedly connected to the output shaft of the servo motor (305). A second worm gear (304) is fixedly sleeved on the side of the transmission shaft (303). A second worm wheel (306) is fixedly sleeved on the side of the mounting shaft (302). The side of the second worm wheel (306) meshes with the side of the second worm gear (304).

8. The evaporative cooling structure for greenhouses according to claim 6, characterized in that: The protective plate (301) has a slot (307) on its side, and a sealing strip (101) is fixedly connected to the inner wall of the side of the frame (1) at the position corresponding to the slot (307).

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