Vegetable greenhouse air circulation device capable of automatically adjusting temperature and humidity

Abstract

The invention discloses a temperature and humidity self-adjusting vegetable greenhouse air circulation device which comprises a telescopic adjusting column and is characterized in that the top of the telescopic adjusting column is movably connected with an air injection assembly through a placement base, and the air injection assembly communicates with a liquid air box fixed to the lower portion of the telescopic adjusting column through a connecting pipe; three groups of annularly arrayed air inlets are formed in the bottom of the telescopic adjusting column, and guide plates fixed to the bottom of the telescopic adjusting column are arranged in the opening position directions of the air inlets; a motor is fixedly connected to the position, close to the placement base, of the top of the telescopic adjusting column, a swing adjusting mechanism and a rotating mechanism are fixedly connected to an output shaft of the motor, the motor drives the air injection assembly and the placement base to longitudinally swing through the swing adjusting mechanism, and the motor drives the placement base to transversely rotate on the top of the telescopic adjusting column through the rotating mechanism. The uniform distribution effect of warm and humid air in the greenhouse can be effectively improved, meanwhile, the equipment integration is higher, and the manufacturing and construction cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of air temperature control equipment, and particularly to an air circulation device for a vegetable greenhouse with self-adjusting temperature and humidity. Background Art

[0002] With the rapid development of modern agricultural technology, facility agriculture plays a crucial role in ensuring the stable supply of agricultural products. As a typical agricultural production facility, the temperature and humidity control of the internal environment of a vegetable greenhouse is directly related to the growth efficiency of crops, the occurrence probability of pests and diseases, and the final yield. In traditional greenhouse cultivation, farmers mostly use manual opening and closing of ventilation openings, sprinkling for humidification, or using single-function equipment for environmental adjustment, which have problems such as high energy consumption, strong adjustment hysteresis, uneven temperature and humidity distribution, etc. Especially in areas with large temperature differences between day and night and significant seasonal climate fluctuations, existing equipment often fails to achieve rapid response, resulting in local high-temperature burns, low-temperature freezing damage, or fungal diseases caused by excessive humidity in the greenhouse. According to statistics, the vegetable losses caused by improper temperature and humidity control in China each year account for more than 30% of the total losses in facility agriculture.

[0003] Regarding the above problems, the currently common solution is to install air circulation devices, that is, ventilation equipment such as fans, at various positions in the vegetable greenhouse to improve the air circulation effect inside the vegetable greenhouse, thereby achieving temperature control. However, this type of method has the following problems:

[0004] First, the floor area of a vegetable greenhouse is relatively large, and more air circulation equipment needs to be introduced, thus increasing the construction cost of the greenhouse. At the same time, in order to ensure a good air circulation driving effect, most of these blowing devices are directly fixed on the top crossbeam of the greenhouse, which not only poses a safety hazard but also further increases the actual construction difficulty;

[0005] Second, the blowing directions that the current air circulation and circulation equipment can provide are mostly fixed or can only provide a small range of adjustment. For greenhouse cultivation with a relatively large space area, the air circulation effect it can provide is very poor. Therefore, more fan equipment needs to be introduced to improve the air circulation effect, thereby increasing the usage cost.

[0006] Therefore, how to provide an air circulation device for a vegetable greenhouse with self-adjusting temperature and humidity is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0007] An object of the present invention is to provide an air circulation device for a vegetable greenhouse with self-adjusting temperature and humidity. The present invention can effectively improve the uniform distribution effect of warm and humid air in the greenhouse, and at the same time make the equipment more integrated, reducing the manufacturing and construction costs.

[0008] An air circulation device for a vegetable greenhouse with self - adjusting temperature and humidity according to an embodiment of the present invention includes a telescopic adjustment column. It is characterized in that a jet component is movably connected to the top of the telescopic adjustment column through a placement base. The jet component is communicated with a liquid - air box fixed below the telescopic adjustment column through a connecting pipe. Three annular - arrayed air inlets are opened at the bottom of the telescopic adjustment column, and a guide plate fixed to the bottom of the telescopic adjustment column is arranged at the opening position and direction of the air inlets.

[0009] A motor is fixedly connected to the position of the top of the telescopic adjustment column close to the placement base. A swing adjustment mechanism and a rotation mechanism are fixedly connected to the output shaft of the motor. The motor drives a longitudinal swing between the jet component and the placement base through the swing adjustment mechanism, and the motor drives the placement base to rotate horizontally on the top of the telescopic adjustment column through the rotation mechanism.

[0010] Further, the swing adjustment mechanism includes a gear disk and two sets of engaging teeth. The gear disk is fixed to the top end of the output shaft of the motor. The two sets of engaging teeth are engaged on both sides of the gear disk and are rotationally limited to the placement base through a shaft rod. A first bevel gear is fixedly connected to the top of the engaging teeth.

[0011] Further, a second bevel gear is orthogonally engaged on one side of the first bevel gear. The second bevel gear is fixed to the bottom end of a swing rod. The two sets of engaging teeth correspond to two swing rods, and a push - pin is fixedly connected between the top ends of the two swing rods.

[0012] Further, the push - pin slides in a swing chute opened below the base. The base is fixedly connected to the bottom of a fog cannon barrel. The bottom end of the swing rod is also rotationally limited to the placement base through a shaft rod near the axis of the second bevel gear.

[0013] Further, the rotation mechanism includes a sun gear and a chassis. The sun gear is fixed to the output shaft of the motor. Three planet gears are annularly arrayed and meshed on the outer - ring surface of the sun gear. Two reversing gears are meshed on the side of the planet gear away from the sun gear. The two reversing gears are separated from each other. The side of the reversing gear away from the planet gear is meshed with an internal gear ring opened inside the placement base.

[0014] Further, the planet gear and the reversing gear are rotationally arranged on the top of the chassis through a support shaft rod. A limiting ring groove is opened inside the placement base near the chassis. The chassis is rotationally limited inside the limiting ring groove through a pressure - bearing bearing.

[0015] Further, a bite groove is opened on the bottom surface of the chassis, and a bite convex is arranged at the bottom of the chassis. The bite convex moves up and down at the bottom of the placement base through an actuator cylinder at the bottom.

[0016] Further, the bite convex and the bite groove are aligned with each other. The bite convex is clamped and abutted against the bite groove through the actuator cylinder. The actuator cylinder is fixed to the top of the telescopic adjustment column.

[0017] Furthermore, the jet assembly includes a fog cannon barrel and two sets of rotating pins, the two sets of rotating pins are respectively fixed on the left and right sides of the outer surface of the fog cannon barrel, and the fog cannon barrel is rotatably connected to the mounting base through the rotating pins.

[0018] Furthermore, a blower is fixed inside the mist cannon barrel, an atomizing top rod is fixed to an opening on one side of the mist cannon barrel through a support rod, a liquid sprayer is fixed to an opening on one side of the mist cannon barrel, the liquid sprayer is connected to the liquid wind box through a connecting pipe, and the bottom of the mist cannon barrel away from the liquid sprayer is connected to the liquid wind box through a connecting pipe.

[0019] The beneficial effects of the present invention are:

[0020] The present invention provides a swing adjustment mechanism on the output shaft of the motor for controlling the placement base. After the gear disc rotates, it can drive the two sets of meshing teeth to rotate, and then the meshing effect of the first bevel teeth and the second bevel teeth drives the swing rod and the pushing pin to swing, so that the sliding effect between the pushing pin and the swing slide groove drives the base and the fog cannon barrel as a whole to swing with the rotating pin as the center of the circle, thereby achieving the angle change of the opening at one end of the fog cannon barrel, thereby achieving the air discharge to different height positions, and utilizing the air flow effect inside the greenhouse to ensure that the warm and humid gas is fully in contact with the crops, thereby achieving a wide range of temperature control effects;

[0021] The present invention provides a rotating mechanism on the output shaft of the motor, and then the electric cylinder drives the bite protrusion to come into contact with the bite groove at the bottom of the chassis. The chassis is fixed in the limit ring groove and cannot rotate. At this time, the rotation of the sun gear will drive the inner gear ring and the mounting base as a whole to rotate on the top of the telescopic adjustment column through the meshing effect of the planetary gear and the reversing wheel. The rotation direction is the same as the rotation direction of the gear plate, so that the motor can convert the angle control of the fog cannon barrel into the rotation control of the mounting base, so that the end opening of the fog cannon barrel can be rotated to other positions, thereby improving the blowing direction and further improving the gas circulation range. Compared with traditional air circulation devices, it has a wider temperature control range and effectively improves flexibility.

[0022] The present invention provides a rotating mechanism. When the bite convex and the bite groove are separated, the rotation of the sun gear will drive the chassis to rotate inside the limiting ring groove, thereby achieving a stable position of the placement base. At the same time, the motor can control the angle and swing direction of the fog cannon barrel respectively. Compared with the traditional control unit, the invention can effectively save the number of motors used, reduce manufacturing costs and improve the integration of the device. It is suitable for hanging or vertical installation. At the same time, the use of a single set of motors also makes the operation of the device more stable and efficient.

[0023] In the present invention, an air inlet and a guide plate are provided at the bottom of the telescopic adjustment column. By controlling the swing of the guide plate, the position of the air inlet port is blocked, thereby controlling the suction direction of the liquid-air box and coordinating with the blowing direction of the fog cannon barrel. After the fog cannon barrel blows out warm and humid gas towards the upper part of the crops, the suction of the air inlet is coordinated to enable the warm and humid gas to quickly fall from the upper part, come into contact with the crops, and be sucked back into the liquid-air box from the bottom of the crops by the air inlet, realizing a good air circulation operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings are used to provide a further understanding of the present invention and form a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0025] Figure 1 is a schematic diagram of the overall structure and external shape of an air circulation device for a vegetable greenhouse with self-adjustable temperature and humidity proposed by the present invention;

[0026] Figure 2 is a schematic diagram of the connection structure of the installation base of an air circulation device for a vegetable greenhouse with self-adjustable temperature and humidity proposed by the present invention.

[0027] Figure 3 is a semi-sectional schematic diagram of the plane structure of the jet component of an air circulation device for a vegetable greenhouse with self-adjustable temperature and humidity proposed by the present invention.

[0028] Figure 4 is a sectional schematic diagram of the plane of the jet component of an air circulation device for a vegetable greenhouse with self-adjustable temperature and humidity proposed by the present invention.

[0029] Figure 5 is a disassembled schematic diagram of the swing adjustment mechanism of an air circulation device for a vegetable greenhouse with self-adjustable temperature and humidity proposed by the present invention.

[0030] Figure 6 is a schematic diagram of the connection structure of the motor of an air circulation device for a vegetable greenhouse with self-adjustable temperature and humidity proposed by the present invention.

[0031] Figure 7 is a schematic diagram of the rotation mechanism of an air circulation device for a vegetable greenhouse with self-adjustable temperature and humidity proposed by the present invention.

[0032] Figure 8 is an air circulation device for a vegetable greenhouse with self-adjustable temperature and humidity proposed by the present invention Figure 6 Schematic diagram of the enlarged structure at point A.

[0033] Figure 9 is a schematic diagram of the air circulation flow principle of an air circulation device for a vegetable greenhouse with self-adjustable temperature and humidity proposed by the present invention.

[0034] In the figure: 1. Telescopic adjustment column; 2. Installation base; 3. Jet component; 4. Liquid-air box; 5. Air inlet; 6. Guide plate; 7. Motor; 8. Swing adjustment mechanism; 9. Rotation mechanism;

[0035] 31. Fog cannon barrel; 32. Swivel pin; 33. Liquid sprayer; 34. Atomization push rod; 35. Blower; 81. Gear disk; 82. Engaging teeth; 83. First bevel gear; 84. Second bevel gear; 85. Swing rod; 86. Pushing pin; 87. Base; 88. Swing chute; 91. Sun gear; 92. Planet gear; 93. Reversing gear; 94. Internal gear ring; 95. Chassis; 96. Limit ring groove; 97. Biting groove; 98. Biting convex; 99. Actuating electric cylinder. Detailed implementation mode

[0036] Now, the present invention will be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only showing the basic structure of the present invention in a schematic way, so they only show the components related to the present invention.

[0037] Reference Figures 1 - 9 , including a telescopic adjustment column 1, characterized in that the top of the telescopic adjustment column 1 is movably connected with a jet component 3 through an installation base 2, the jet component 3 is communicated with a liquid-air box 4 fixed below the telescopic adjustment column 1 through a connecting pipe, three groups of annularly arranged air inlets 5 are opened at the bottom of the telescopic adjustment column 1, and a guide plate 6 fixed to the bottom of the telescopic adjustment column 1 is arranged at the opening position and direction of the air inlets 5;

[0038] A motor 7 is fixedly connected to the position of the top of the telescopic adjustment column 1 close to the installation base 2, a swing adjustment mechanism 8 and a rotation mechanism 9 are fixedly connected to the output shaft of the motor 7, the motor 7 drives a longitudinal swing between the jet component 3 and the installation base 2 through the swing adjustment mechanism 8, and the motor 7 drives the installation base 2 to rotate horizontally on the top of the telescopic adjustment column 1 through the rotation mechanism 9.

[0039] In this implementation scheme, the jet component 3 is movably connected to the top of the telescopic adjustment column 1 through the installation base 2, and the telescopic adjustment column 1 is used for support to enable the jet component 3 to face different directions and angles, so as to control the blowing direction of the warm and humid gas. The telescopic adjustment column 1 can be adjusted to a normal height to adapt to the different heights of crops in different periods, so that the jet component 3 does not need to be fixed at the top of the traditional greenhouse in a hanging manner, providing better movement space for the jet component 3 and effectively preventing potential safety hazards in the traditional scheme;

[0040] While the jet component 3 is no longer arranged on the greenhouse crossbeam in a suspended manner, which can effectively improve the flexibility and activity space, the vertical installation method will increase the instability of the jet component 3 during operation, resulting in situations such as shaking when the jet component 3 blows air. The solution to such a situation is to reduce the number of motors 7 used and the overall weight of the jet component 3 and the mounting base 2 on the top of the telescopic adjustment column 1. Specifically, the output shaft of the motor 7 is directly connected to the swing adjustment mechanism 8 and the rotation mechanism 9. The swing adjustment mechanism 8 can control the longitudinal swing angle of the jet component 3 when the output shaft of the motor 7 rotates, changing the blowing direction of the port of the jet component 3. The rotation mechanism 9 can change the lateral blowing position of the jet component 3 after being docked with the output shaft of the motor 7, thereby realizing the control of the jet component 3 to blow air in various directions and at various angles. Compared with the traditional control operation, it can maximize the control effect of the temperature and humidity in all directions inside the greenhouse. Moreover, the solution also improves the integration degree of the connection between the swing adjustment mechanism 8 and the rotation mechanism 9 and the motor 7 to reduce the use of the motor 7, thereby reducing the weight of the jet component 3 and further improving the stability of the use of the jet component 3;

[0041] The height of the jet component 3 can be adjusted by the telescopic adjustment column 1 to make it higher than the highest position of the crops. At the air outlet where the jet component 3 blows warm and humid air into the air, the warm and humid air diffuses in the greenhouse. The air inlet 5 at the bottom of the telescopic adjustment column 1 can control the actual suction direction by the swing of the guide plate 6, so that the warm and humid air moves downward under the suction force and contacts the surface of the crops. Specifically, a suction pipe can also be set at the position of the air inlet 5, and the pipeline is laid underground in the greenhouse to improve the actual suction effect, so that the warm and humid air can be better utilized and the temperature and humidity control effect in the greenhouse can be improved.

[0042] Reference Figures 2 - 5 , the swing adjustment mechanism 8 includes a gear disk 81 and two sets of meshing teeth 82. The gear disk 81 is fixed at the top of the output shaft of the motor 7. The two sets of meshing teeth 82 are meshed on both sides of the gear disk 81 and are rotationally limited to the mounting base 2 through a shaft rod. The top of the meshing tooth 82 is fixedly connected to a first bevel gear 83. One side of the first bevel gear 83 is vertically meshed with a second bevel gear 84. The second bevel gear 84 is fixedly connected to the bottom end of the swing rod 85. The two sets of meshing teeth 82 correspond to two sets of swing rods 85. A push pin 86 is fixedly connected between the top ends of the two sets of swing rods 85. The push pin 86 slides in a swing chute 88 opened under the base 87. The base 87 is fixedly connected to the bottom of the fog cannon barrel 31. The bottom end of the swing rod 85 near the axis of the second bevel gear 84 is also rotationally limited to the mounting base 2 through a shaft rod.

[0043] In this embodiment, after the motor 7 starts, the top of its output shaft directly drives the gear disk 81 to rotate inside the placement base 2. During the rotation, the engaging teeth 82 on both sides of the gear disk 81 are forced to rotate. At the same time, the first bevel gear 83 is fixed to the top of the engaging teeth 82, and the first bevel gear 83 meshes with the second bevel gear 84 at a right angle, causing the second bevel gear 84 to rotate and drive the swing rod 85 to swing inside the placement base 2. Specifically, how to achieve the same-direction swing of the two swing rods 85 is realized by setting the meshing direction of the second bevel gear 84 and the first bevel gear 83. At the same time, the pushing pins 86 fixed between the two swing rods 85 will slide in the swing chute 88, and the swing chute 88 at the bottom of the bite groove 97 is subjected to the thrust of the pushing pins 86, causing the entire fog cannon barrel 31 to swing at a certain angle with the rotation center pin 32 as the center, thereby changing the angular orientation of the port of the fog cannon barrel 31, so that the warm and humid air is sprayed to a farther or nearer position to perform heat preservation and moisture preservation treatment on the crops.

[0044] Reference Figures 6 - 8 , the rotating mechanism 9 includes a sun gear 91 and a chassis 95. The sun gear 91 is fixed on the output shaft of the motor 7. Three planet gears 92 are annularly arrayed and meshed on the outer surface of the sun gear 91. Two reversing gears 93 are meshed on the side of the planet gear 92 away from the sun gear 91. The two reversing gears 93 are separated from each other. The side of the reversing gear 93 away from the planet gear 92 is meshed with the internal gear ring 94. The internal gear ring 94 is opened inside the placement base 2. The planet gear 92 and the reversing gear 93 are rotationally arranged on the top of the chassis 95 through a support shaft rod. A limit ring groove 96 is opened at a position inside the placement base 2 close to the chassis 95. The chassis 95 is rotationally limited inside the limit ring groove 96 through a pressure-bearing bearing. A bite groove 97 is opened on the bottom surface of the chassis 95, and a bite protrusion 98 is arranged at the bottom of the chassis 95. The bite protrusion 98 moves up and down through the actuator cylinder 99 at the bottom and is located at the bottom of the placement base 2. The bite protrusion 98 is aligned with the bite groove 97, and the bite protrusion 98 is in clamping contact with the bite groove 97 through the actuator cylinder 99. The actuator cylinder 99 is fixed on the top of the telescopic adjustment column 1.

[0045] In this embodiment, since the sun gear 91 is fixed to the output shaft of the motor 7, the sun gear 91 will rotate synchronously while the motor 7 drives the gear disk 81 to rotate. The outer side of the sun gear 91 meshes with the planet gear 92, and the side of the planet gear 92 away from the sun gear 91 meshes with the internal gear ring 94 inside the placement base 2 through the reversing gear 93. In this way, during the rotation of the sun gear 91, it will drive the planet gear 92 and the reversing gear 93 to rotate. The planet gear 92 and the reversing gear 93 are movably arranged on the top of the chassis 95 through the shaft rod, and the chassis 95 is stressed to rotate stably in the limit ring groove 96 inside the placement base 2 to achieve the idling effect. When the actuating cylinder 99 is started to drive the biting protrusion 98 to bite with the biting groove 97 at the bottom of the chassis 95, the position of the chassis 95 itself is restricted and cannot rotate. At this time, the positions of the planet gear 92 and the reversing gear 93 are also restricted. The meshing effect between the internal gear ring 94 and the reversing gear 93 will cause the entire placement base 2 to rotate on the top of the telescopic adjustment column 1, and then drive the entire jet component 3 to rotate horizontally through the placement base 2, driving the fog cannon barrel 31 to align with different orientations. During this process, since the placement base 2 is in a rotating state, the meshing teeth 82 and the gear disk 81 are relatively stationary, thus preventing the rotation of the motor 7 from driving the fog cannon barrel 31 to change the angle. The overall integration degree is relatively high, which can effectively reduce the number of motors 7 used, and then reduce the weight of the device on the top of the telescopic adjustment column 1 and improve the stability.

[0046] Reference Figures 2 - 4 , the jet component 3 includes a fog cannon barrel 31 and two pivot pins 32. The two pivot pins 32 are respectively fixed on the left and right sides of the outer surface of the fog cannon barrel 31. The fog cannon barrel 31 is rotationally connected to the placement base 2 through the pivot pins 32. A blower 35 is fixed inside the fog cannon barrel 31. The position of one side opening of the fog cannon barrel 31 is fixed with a fog atomizing top rod 34 through a support rod. A liquid sprayer 33 is fixed at one side opening of the fog cannon barrel 31. The liquid sprayer 33 is connected to the liquid-air box 4 through a connecting pipe. The bottom of the fog cannon barrel 31 on the side away from the liquid sprayer 33 is connected to the liquid-air box 4 through a connecting pipe.

[0047] In this embodiment, after the blower 35 is started inside the fog cannon barrel 31, it can suck the hot air inside the liquid-air box 4 and spray it to the outside through the port of the fog cannon barrel 31. The fog atomizing top rod 34 is set at the port position of the fog cannon barrel 31, and the liquid sprayer 33 at the port position sucks the liquid inside the liquid-air box 4. The liquid diffuses at the port of the fog cannon barrel 31 to achieve atomization, thereby controlling the air humidity inside the greenhouse. The pivot pins 32 on both sides of the fog cannon barrel 31 are directly rotatably mounted on the placement base 2, so that the fog cannon barrel 31 can have a swinging effect above the placement base 2, and the swinging effect is controlled by the swing adjustment mechanism 8.

[0048] Working principle: By starting the motor 7 at the top of the telescopic adjustment column 1, the output shaft of the motor 7 directly drives the gear disk 81 to rotate. The two sides of the gear disk 81 are meshed with the engaging teeth 82. The engaging teeth 82 directly drive the swing rod 85 and the pushing pin 86 to swing inside the placement base 2 through the meshing effect of the first bevel gear 83 and the second bevel gear 84. During the swinging process, the pushing pin 86 abuts against the swing chute 88 at the bottom of the base 87, thereby driving the fog cannon barrel 31 to swing on the placement base 2 with the pivot pin 32 as the center, changing the actual orientation of the fog cannon barrel 31. Subsequently, the electric cylinder 99 is started to drive the engaging convex 98 to engage with the engaging groove 97 at the bottom of the chassis 95. At this time, the position of the chassis 95 is restricted and cannot rotate in the limit ring groove 96, while the output shaft of the motor 7 will synchronously drive the sun gear 91 to rotate. During the rotation of the sun gear 91, it will drive the planet gear 92 and the reversing gear 93 to engage and transmit. The transmission effect is transmitted to the internal internal gear ring 94 of the placement base 2, causing the internal gear ring 94 to drive the placement base 2 to rotate on the top of the telescopic adjustment column 1. At this time, the rotation direction of the placement base 2 is the same as that of the gear disk 81, so that the gear disk 81 and the engaging teeth 82 remain stationary, thereby driving the entire fog cannon barrel 31 to change its actual orientation on the top of the placement base 2;

[0049] After determining the orientation of the port of the fog cannon barrel 31, the blower 35 is started to suck the hot air inside the liquid-air tank 4 through the connecting pipe. The hot air is sprayed into the air through the port on one side of the fog cannon barrel 31. At the same time, the liquid sprayer 33 sucks the liquid inside the liquid-air tank 4. Under the guidance of the atomizing top rod 34, the liquid is atomized at the port of the fog cannon barrel 31, thereby realizing the control of the temperature and humidity inside the greenhouse;

[0050] During the process of controlling the temperature and humidity of the greenhouse interior, the liquid-air tank 4 will suck the air below the crops through the air inlet 5 at the bottom of the telescopic adjustment column 1, and control the actual suction direction of the air inlet 5 by controlling the swing direction of the guide plate 6, thereby controlling the effect of the air circulation inside the greenhouse. For details, please refer to Figure Nine 。

[0051] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An air circulation device for a vegetable greenhouse with self-adjustment of temperature and humidity, comprising a telescopic adjustment column (1), characterized in that, At the top of the telescopic adjustment column (1), a jet component (3) is movably connected through a mounting base (2). The jet component (3) is communicated with a liquid-air box (4) fixed below the telescopic adjustment column (1) through a connecting pipe. At the bottom of the telescopic adjustment column (1), three annularly arrayed air inlets (5) are provided, and a guide plate (6) fixed to the bottom of the telescopic adjustment column (1) is arranged at the opening position and direction of the air inlets (5). A motor (7) is fixedly connected to the position of the top of the telescopic adjustment column (1) close to the mounting base (2). A swing adjustment mechanism (8) and a rotation mechanism (9) are fixedly connected to the output shaft of the motor (7). The motor (7) drives a longitudinal swing between the jet component (3) and the mounting base (2) through the swing adjustment mechanism (8), and the motor (7) drives the mounting base (2) to rotate horizontally on the top of the telescopic adjustment column (1) through the rotation mechanism (9).

2. The air circulation device for a vegetable greenhouse with self-adjusting temperature and humidity according to claim 1, characterized in that, The swing adjustment mechanism (8) includes a toothed disc (81) and two sets of engaging teeth (82). The toothed disc (81) is fixed to the top end of the output shaft of the motor (7). The two sets of engaging teeth (82) are engaged on both sides of the toothed disc (81) and are rotationally limited to the mounting base (2) through a shaft rod. A first bevel gear (83) is fixedly connected to the top of the engaging teeth (82).

3. The air circulation device for a vegetable greenhouse with self-adjusting temperature and humidity according to claim 2, characterized in that, On one side of the first bevel gear (83), a second bevel gear (84) is engaged at a right angle. The second bevel gear (84) is fixed to the bottom end of a swing rod (85). The two sets of engaging teeth (82) correspond to the two sets of swing rods (85), and a push pin (86) is fixedly connected between the top ends of the two sets of swing rods (85).

4. The air circulation device for a vegetable greenhouse with self-adjustable temperature and humidity according to claim 3, characterized in that, The push pin (86) slides in a swing chute (88) opened below a base (87). The base (87) is fixedly connected to the bottom of a fog cannon barrel (31). The bottom end of the swing rod (85) is also rotationally limited to the mounting base (2) through a shaft rod at a position close to the axis of the second bevel gear (84).

5. The air circulation device for a vegetable greenhouse with self-adjusting temperature and humidity according to claim 1, characterized in that, The rotation mechanism (9) includes a sun gear (91) and a chassis (95). The sun gear (91) is fixed to the output shaft of the motor (7). Three planet gears (92) are annularly arrayed and meshed on the outer surface of the sun gear (91). On the side of the planet gear (92) away from the sun gear (91), two reversing gears (93) are meshed. The two reversing gears (93) are separated from each other. On the side of the reversing gear (93) away from the planet gear (92), it is meshed with an internal toothed ring (94). The internal toothed ring (94) is opened inside the mounting base (2).

6. The air circulation device for a vegetable greenhouse with self-adjusting temperature and humidity according to claim 5, characterized in that, The planet gear (92) and the reversing gear (93) are rotationally arranged on the top of the chassis (95) through a support shaft rod. A limit ring groove (96) is opened inside the mounting base (2) close to the chassis (95). The chassis (95) is rotationally limited inside the limit ring groove (96) through a pressure-bearing bearing.

7. The air circulation device for a vegetable greenhouse with self-adjusting temperature and humidity according to claim 6, characterized in that, A bite groove (97) is opened on the bottom surface of the chassis (95). A bite protrusion (98) is arranged at the bottom of the chassis (95). The bite protrusion (98) moves up and down at the bottom of the mounting base (2) through an actuating electric cylinder (99) at the bottom.

8. A vegetable greenhouse air circulation device with self-adjusting temperature and humidity according to claim 7, characterized in that The bite protrusion (98) is aligned with the bite groove (97). The bite protrusion (98) is in clamping contact with the bite groove (97) through the actuating electric cylinder (99). The actuating electric cylinder (99) is fixed to the top of the telescopic adjustment column (1).

9. The air circulation device for a vegetable greenhouse with self-adjusting temperature and humidity according to claim 1, characterized in that, The jet component (3) includes a fog cannon barrel (31) and two sets of pivot pins (32). The two sets of pivot pins (32) are respectively fixed on the left and right sides of the outer surface of the fog cannon barrel (31). The fog cannon barrel (31) is rotatably connected to the installation base (2) through the pivot pins (32).

10. The air circulation device for a vegetable greenhouse with self-adjusting temperature and humidity according to claim 9, characterized in that, A blower (35) is fixed inside the fog cannon barrel (31). The atomizing top rod (34) is fixed through a support rod at the opening position on one side of the fog cannon barrel (31). A liquid sprayer (33) is fixed at the opening on one side of the fog cannon barrel (31). The liquid sprayer (33) is communicated with the liquid-air tank (4) through a connecting pipe. The bottom on the side of the fog cannon barrel (31) away from the liquid sprayer (33) is communicated with the liquid-air tank (4) through a connecting pipe.

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