Multi-dimensional temperature adjusting multi-span greenhouse

Abstract

The utility model relates to the technical field of agricultural engineering, in particular to a multi-dimensional temperature-adjusting multi-span greenhouse which comprises a framework and a ventilation structure mounted on the framework, a side dustproof film, an insect-proof net and a heat preservation quilt are sequentially arranged on the peripheral side of the framework from outside to inside, and a top dustproof film and a first sunshade net are sequentially arranged above the framework from outside to inside; a first winding device, a second winding device and a third winding device are arranged on the framework, a heightening frame is fixed to the top of the framework, a second sunshade net is arranged on the heightening frame, and a fourth winding device is arranged on the heightening frame. Through cooperative use of the first winding device, the second winding device, the third winding device and the fourth winding device, winding and unwinding of different functional films are controlled, so that the functions of temperature, ventilation and the like in the greenhouse are flexibly adjusted, the greenhouse adapts to different climatic environments, the effects of heat preservation in winter and cooling in summer are achieved, and the service life of the greenhouse is prolonged. Therefore, the growth environment of crops in the greenhouse is ensured.

Description

Technical Field

[0001] This application relates to the technical field of agricultural engineering, and in particular to a multi-dimensional temperature-controlled multi-span greenhouse. Background Art

[0002] Greenhouses are widely used in the agricultural field. Because greenhouses can not only protect from wind and rain, artificially control temperature and humidity, reduce the occurrence of pests and diseases, but also advance or delay the harvest period of crops, enable off-season cultivation of crops, thereby improving planting efficiency, extending the supply time of crops, and meeting the material needs of the people. Among them, multi-span greenhouses are widely used by agricultural growers due to their advantages of saving space, saving costs and good stability.

[0003] The existing structure of a multi-span greenhouse mainly includes a framework. On the framework, a greenhouse film made of drip film material and an inner insulation film made of drip film material are sequentially arranged from outside to inside. A common black sunshade net is also arranged on the framework. The ventilation inside the greenhouse is achieved by opening ventilation openings on the side and above of the greenhouse and cooperating with the installation of fans. When the above multi-span greenhouse is in use, through the combined use of the greenhouse film, inner insulation film, sunshade net and ventilation openings, the whole greenhouse has certain functions of heat preservation, dust prevention, pest prevention, sunshading and ventilation.

[0004] However, for the climate in special regions, such as the climate in the Yangtze River Delta region where the coldest winter temperature reaches below minus 7 degrees Celsius and the highest summer external temperature reaches above 42 degrees Celsius. In actual application of the above greenhouse, in the low-temperature stage in winter, although it has a certain heat preservation effect, it is not obvious; while in the high-temperature season in summer, when all the windows of the greenhouse are opened and the sunshade net is unfolded, since the common sunshade net will absorb light and cause the temperature of its own material to rise when sunlight shines on the sunshade net, this results in the temperature inside the greenhouse not only not being reduced, but being higher than the external temperature. Moreover, the ventilation function formed by the fan and the ventilation opening is a one-way wind and cannot meet the requirement of ventilating and cooling the greenhouse, so that the crops inside the greenhouse are easily affected by high-temperature obstacles and are not conducive to use. Summary of the Utility Model

[0005] In order to achieve the effect of ensuring heat preservation in winter and cooling in summer on the premise of being used in both winter and summer, this application provides a multi-dimensional temperature-controlled multi-span greenhouse.

[0006] A multi-dimensional temperature-controlled multi-span greenhouse provided by this application adopts the following technical solutions:

[0007] A multi-dimensional temperature-controlled multi-span greenhouse, comprising a framework and a ventilation structure installed on the framework. Among them, a side dust-proof film, an insect-proof net and a heat-insulating quilt are sequentially arranged on the periphery of the framework from outside to inside. A top dust-proof film and a first sunshade net are sequentially arranged on the top of the framework from outside to inside. A first winding device for winding the side dust-proof film, a second winding device for winding the heat-insulating quilt, and a third winding device for winding the first sunshade net are arranged on the framework. A heightening frame is fixed on the top of the framework, a second sunshade net is arranged on the heightening frame, and a fourth winding device for winding the second sunshade net is arranged on the heightening frame.

[0008] By adopting the above technical solution, during use, in a high-temperature environment in summer, the heat-insulating quilt and the dust-proof film can be opened by controlling the first winding device and the second winding device, so as to realize the circulating ventilation inside the framework through the insect-proof net and the ventilation structure on the framework, improve the overall ventilation effect, and then open the first sunshade net and the second sunshade net through the third winding device and the fourth winding device to achieve a double-layer sunshade effect, further reducing the temperature inside the greenhouse, thereby realizing the cooling effect in summer; in a cold environment in winter, the heat-insulating quilt and the dust-proof film on the framework are unwound to ensure the temperature inside the greenhouse, which has a significant improvement compared with the heat preservation effect of the flow-dropping film in the prior art, and at the same time realizes the heat preservation effect in winter, thereby ensuring the growth environment of crops inside the greenhouse.

[0009] Preferably, there are two groups of side dust-proof films. One group of side dust-proof films is used to block the lower half area outside the framework, and the other group of side dust-proof films is used to block the upper half area outside the framework. There are two groups of first winding devices corresponding to the side dust-proof films, and a first limiting structure for guiding and limiting the unwinding direction of the side dust-proof film is arranged on the framework.

[0010] By adopting the above technical solution, during use, the unwinding direction of the side dust-proof film is guided and limited by the first limiting structure to ensure the normal unwinding of the side dust-proof film. Through the coordinated use of two groups of first winding devices, the staff can choose to control the opening or closing of the two groups of side dust-proof films at the same time as needed, or open one group of side dust-proof films and close the other group, thereby improving the overall applicability of the side dust-proof film and making it simple and convenient to use.

[0011] Preferably, the first limiting structure includes two groups of first intercepting nets fixed on the framework. A first limiting space is formed between the two groups of first intercepting nets, and both groups of side dust-proof films are located in the first limiting space.

[0012] By adopting the above technical solution, during use, through the combined action of the two groups of first intercepting nets, the two groups of side dust-proof films are restricted in the first limiting space to ensure the normal unwinding of the first intercepting net.

[0013] Preferably, the first winding device includes a first mounting block fixed on the framework, a first winding roller rotatably mounted on the first mounting block for winding the first dust-proof film, and a first winding machine mounted on the first mounting block for driving the first winding roller to rotate. The first dust-proof film is wound around the first winding roller.

[0014] By adopting the above technical solution, during use, the first winding machine drives the first winding roller to rotate, thereby winding the first dust-proof film around the first winding roller, so as to realize the winding of the first dust-proof film. Conversely, by driving the first winding roller to rotate in the reverse direction by the first winding machine, the unwinding of the first dust-proof film can be realized.

[0015] Preferably, the second winding device includes a second mounting block fixed on the framework, a second winding roller rotatably connected to the second mounting block, and a second winding machine mounted on the second mounting block for driving the second winding roller to rotate. The heat preservation quilt is wound around the second winding roller.

[0016] By adopting the above technical solution, during use, the second winding machine drives the second winding roller to rotate, thereby winding the heat preservation quilt around the second winding roller, so as to realize the winding of the heat preservation quilt. Conversely, by driving the second winding roller to rotate in the reverse direction by the second winding machine, the unwinding of the heat preservation quilt can be realized, and the use is simple and convenient.

[0017] Preferably, the first sunshade net includes a plurality of first area nets for blocking the light in some areas inside the framework, and after the plurality of area nets are combined, they are used to block the light in the top area inside the framework. The third winding device is used to drive the synchronous winding of the plurality of groups of the first area nets.

[0018] By adopting the above technical solution, during use, the third winding device controls the synchronous unwinding or winding of the plurality of groups of the first area nets, so as to ensure the sunshade effect of the first sunshade net, and the overall use is simple and convenient.

[0019] Preferably, the third winding device includes a first gear rotatably mounted on the framework, a first driving motor mounted on the framework for driving the first gear to rotate, a first rack slidably mounted on the framework, and a first clamping member fixed on the first rack. The first gear and the first rack are meshed with each other. The first clamping member is used to clamp one end of a single first area net, and the other end of the first area net is fixed on the framework. The number of the first clamping members is the same as the number of the first area nets.

[0020] By adopting the above technical solution, when in use, the first driving motor drives the first gear to rotate, thereby driving the first rack to slide. Under the action of the first clamping member, one end of the first area net slides along with the first rack, and thus the unwinding of the first area net can be realized. When the first driving motor reversely drives the first gear to rotate, the winding of the first area net can be realized.

[0021] Preferably, the top dust-proof film includes a first dust-proof film fixed on the skeleton and a second dust-proof film that can be wound up and slides on the skeleton. The first dust-proof film is used to block a part of the top area of the skeleton, and the second dust-proof film is used to block another part of the top area of the skeleton. A fifth winding device for winding up the second dust-proof film is arranged on the skeleton.

[0022] By adopting the above technical solution, when in use, the fifth winding device is used to control the winding of the second dust-proof film, so that a ventilation area appears on the top dust-proof film. Cooperating with the insect-proof nets around and the ventilation structure on the skeleton, the ventilation effect in the greenhouse can be further improved, which helps to cool down the greenhouse in the high-temperature environment in summer.

[0023] Preferably, the fifth winding device includes a track fixed on the skeleton, a third winding roller rolling on the track, a third winding machine for driving the third winding roller to rotate, and an electric telescopic rod arranged on the skeleton. One end of the electric telescopic rod is rotatably connected to the skeleton, and an installation seat is fixed at the other end of the electric telescopic rod. The third winding machine is installed on the installation seat, and the second dust-proof film is wound around the third winding roller.

[0024] By adopting the above technical solution, when in use, the third winding machine drives the third winding roller to rotate, and then cooperating with the electric telescopic rod, the third winding roller can roll along the track while rotating, so as to wind the second dust-proof film on the third winding roller.

[0025] Preferably, a second limiting structure for guiding and limiting the unwinding direction of the second sunshade net is arranged on the heightening frame.

[0026] By adopting the above technical solution, when in use, the second limiting structure limits the unwinding of the second sunshade net, so as to ensure the effective use of the second sunshade net after unwinding.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. By the combined use of the first rewinding device, the second rewinding device, the third rewinding device and the fourth rewinding device, in the high-temperature environment in summer, by improving the shading effect inside the framework and the ventilation effect inside the framework, the purpose of reducing the temperature inside the greenhouse is achieved. In the cold environment in winter, through the combined action of the thermal insulation quilt and the dust-proof film, compared with the existing technology of using the flow-dropping film for heat preservation, the effect is significantly improved, which is more conducive to adapting to different external environments;

[0029] 2. By the combined use of two groups of first intercepting nets, the unwinding direction of the side dust-proof film is guided and limited, so as to ensure the effective use of the side dust-proof film after unwinding;

[0030] 3. By controlling the unwinding or rewinding of the second dust-proof film through the fifth rewinding device, in the high-temperature environment in summer, the ventilation effect inside the greenhouse is further improved, so as to further reduce the temperature inside the greenhouse. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is an axonometric schematic diagram mainly showing the overall structure in the embodiment of the present application;

[0032] Figure 2 is a sectional view mainly showing the overall structure in the embodiment of the present application;

[0033] Figure 3 is Figure 1 the enlarged view mainly showing the structure of part A in

[0034] Figure 4 is an axonometric schematic diagram mainly showing the top structure of the framework in the embodiment of the present application;

[0035] Figure 5 is Figure 4 the enlarged view mainly showing the structure of part B in

[0036] Figure 6 is an axonometric schematic diagram mainly showing the structure of the second rewinding device in the embodiment of the present application;

[0037] Figure 7 is an axonometric schematic diagram mainly showing the structure of the first sunshade net in the embodiment of the present application;

[0038] Figure 8 is an axonometric schematic diagram mainly showing the structure of the first clamping member in the embodiment of the present application;

[0039] Figure 9 is an axonometric schematic diagram mainly showing the structure of the heightening frame in the embodiment of the present application;

[0040] Figure 10 is a schematic diagram showing the principle of the irrigation system in the embodiment of the present application.

[0041] Reference numerals: 1, framework; 2, side dust-proof film; 3, insect-proof net; 4, heat-insulating quilt; 5, top dust-proof film; 51, first dust-proof film; 52, second dust-proof film; 53, fifth winding device; 531, track; 532, third winding roller; 533, third winding machine; 534, electric telescopic rod; 535, mounting seat; 6, first sunshade net; 61, first area net; 7, first winding device; 71, first mounting block; 72, first winding roller; 73, first winding machine; 8, second winding device; 81, second mounting block; 82, second winding roller; 83, second winding machine; 9, third winding device; 91, first gear; 92, first driving motor; 93, first rack; 94, first clamping member; 10, elevation frame; 20, second sunshade net; 30, fourth winding device; 301, second gear; 302, second rack; 303, second driving motor; 40, first limiting structure; 401, first intercepting net; 50, second limiting structure; 60, third limiting structure; 70, side gutter; 80, central gutter; 90, drainage pipeline; 100, irrigation system; 1001, water passing main pipe; 1002, water pump; 1003, sedimentation tank; 1004, drain pipe; 200, fertilization system; 2001, batching tank; 2002, water passing sub-pipe. Detailed implementation manners

[0042] The following further describes the present application in detail with reference to the Figure 1 - Figure 10 accompanying drawings.

[0043] An embodiment of the present application discloses a multi-dimensional temperature-adjustable multi-span greenhouse.

[0044] Referring to Figure 1 , a multi-dimensional temperature-adjustable multi-span greenhouse is formed by combining a plurality of groups of greenhouse units in a rectangular array. In this embodiment, the structure is described by taking the combination of two groups of greenhouse units as an example.

[0045] Referring to Figure 1 and Figure 2 , the greenhouse unit includes a framework 1 horizontally placed on the ground and a ventilation structure installed on the framework 1. The framework 1 is formed by welding a plurality of steel pipes. After the framework 1 is formed, it is also necessary to perform galvanizing treatment on the surface of the framework 1 to ensure the overall service life of the framework 1. The framework 1 has a structure with a square shape at the bottom and an arch shape at the top. The ventilation structure includes a plurality of groups of fans, and the fans are installed on both sides of the framework 1 to realize the unidirectional air flow in the greenhouse.

[0046] Referring to Figure 1 and Figure 2, an insect-proof net 3, a side dust-proof film 2 and a heat-insulating quilt 4 are installed around the lower part of the framework 1. The side dust-proof film 2 is located outside the insect-proof net 3, and the heat-insulating quilt 4 is located inside the insect-proof net 3. A top dust-proof film 5 is also provided at the top of the framework 1. In this embodiment, both the side dust-proof film 2 and the top dust-proof film 5 are preferably made of PO film. It should be noted that when two greenhouse units are combined, the side dust-proof film 2, the insect-proof net 3 and the heat-insulating quilt 4 on the combined side of the two greenhouse units need to be removed to achieve the spatial connection within the two greenhouse units.

[0047] Refer to Figure 1 and Figure 3 , there are two sets of side dust-proof films 2, and the two sets of side dust-proof films 2 are distributed at intervals along the height direction of the framework 1. That is, one set of side dust-proof film 2 is used to shield the lower half area outside the framework 1, and the other set of side dust-proof film 2 is used to shield the upper half area outside the framework 1. Two sets of first winding devices 7 are provided on the framework 1, and the two sets of first winding devices 7 are arranged corresponding to the two sets of side dust-proof films 2. That is, one set of first winding device 7 is used to wind the side dust-proof film 2 located above, and the other set of first winding device 7 is used to wind the side dust-proof film 2 located below.

[0048] Refer to Figure 1 and Figure 3 , the first winding device 7 includes a first mounting block 71, a first winding roller 72 and a first winding machine 73. The first mounting block 71 is fixed on the framework 1 by bolts. There are two first mounting blocks 71, and the two first mounting blocks 71 are oppositely arranged at both ends in the width direction of the framework 1. The first winding roller 72 rotates on the first mounting block 71, and the first winding machine 73 is fixed on the first mounting block 71 by bolts. The output shaft of the first winding machine 73 is coaxially and fixedly connected with the first winding roller 72. The first dust-proof film 51 is wound around the first winding roller 72. In this embodiment, the first winding machine 73 is preferably an electric film winder.

[0049] Refer to Figure 1 and Figure 3 , when in use, the electric film winder is used to drive the first winding roller 72 to rotate forward and backward to achieve the purpose of winding or unwinding the side dust-proof film 2. By using two electric film winders to control the winding and unwinding of the two side dust-proof films 2 respectively, different usage scenarios can be adapted. At the same time, it is also convenient for the staff to adjust the opening and closing of the side dust-proof film 2 according to the usage situation, which is more beneficial for use.

[0050] Refer to Figure 1 and Figure 2, in order to ensure that during the unwinding process of the side dust-proof film 2, the unwinding direction of the side dust-proof film 2 is not affected by external wind forces, etc., a first limiting structure 40 is provided on the framework 1. The first limiting structure 40 is used to guide and limit the unwinding process of the side dust-proof film 2. The first limiting structure 40 is composed of two groups of first intercepting nets 401. The two groups of first intercepting nets 401 are arranged at intervals, that is, a first limiting space is formed between the two groups of first intercepting nets 401. Both groups of side dust-proof films 2 are arranged in the first limiting space. The first intercepting net 401 is formed by crossing a number of elastic ropes, and both ends of the elastic ropes are fixed on the framework 1.

[0051] Refer to Figure 1 and Figure 4 , the top dust-proof film 5 is composed of a group of first dust-proof films 51 and two groups of second dust-proof films 52. Among them, the first dust-proof film 51 is fixed directly above the framework 1. The two groups of second dust-proof films 52 are symmetrically arranged on both sides of the first dust-proof film 51. A fifth winding device 53 for winding the second dust-proof film 52 is provided on the framework 1. There are also two groups of the fifth winding devices 53, and the two groups of fifth winding devices 53 are respectively arranged corresponding to a group of second dust-proof films 52.

[0052] Refer to Figure 1 and Figure 4 , during use, the first dust-proof film 51 is used to block a part of the top area of the framework 1, and the second dust-proof film 52 is used to block another part of the top area of the framework 1. When both groups of second dust-proof films 52 are fully unfolded, the first dust-proof film 51 and the second dust-proof films 52 can form a block for the entire top area of the framework 1 after combination. Together with the side dust-proof film 2, the greenhouse can have a dust-proof function; when both groups of second dust-proof films 52 are wound up, a ventilation opening can be formed in the area where the two groups of second dust-proof films 52 are located, which is beneficial to increasing the ventilation effect inside the greenhouse.

[0053] Refer to Figure 4 and Figure 5 , the fifth winding device 53 is composed of a track 531, a third winding roller 532, a third winding machine 533 and an electric telescopic rod 534. Among them, the track 531 is formed by welding an arc-shaped rod and two connecting rods. The two connecting rods are located at both ends of the arc-shaped rod. The two connecting rods are both fixed on the framework 1 by bolts. A sliding space is formed between the arc-shaped rod, the connecting rods and the framework 1. The third winding roller 532 slides in the sliding space. There are two groups of electric telescopic rods 534, and the two groups of electric telescopic rods 534 are respectively arranged at one end of the third winding roller 532. One end of the electric telescopic rod 534 is hinged on the framework 1, and a mounting seat 535 is fixed at the other end of the electric telescopic rod 534. The third winding machine 533 is fixed on the mounting seat 535 by bolts. The third winding machine 533 is used to drive the third winding roller 532 to wind the second dust-proof film 52.

[0054] Refer toFigure 4 and Figure 5 In this embodiment, the third rewinder 533 is preferably set as an electric film winder. When in use, the output end of the third rewinder 533 is coaxially and fixedly connected to the third winding roller 532. One end of the second dust-proof film 52 is fixed on the framework 1, and the other end of the second dust-proof film 52 is wound around the third winding roller 532. When the output end of the third rewinder 533 rotates, it will drive the third winding roller 532 to rotate. Under the combined action of the track 531 and the electric telescopic rod 534, the third rewinder 533 rolls along the length direction of the track 531, and at the same time winds the second dust-proof film 52, so that the winding or unfolding of the second dust-proof film 52 can be realized.

[0055] Referring to Figure 2 and Figure 6 As shown in FIGS. and, a second rewinding device 8 for rewinding the heat-insulating quilt 4 is provided on the framework 1. The second rewinding device 8 is composed of a second mounting block 81, a second winding roller 82 and a second rewinder 83. The second mounting block 81 is fixed to a vertical rod in the framework 1 by bolts. There are two second mounting blocks 81, and the two second mounting blocks 81 are respectively arranged at both ends of the second winding roller 82. The second winding roller 82 is rotatably connected to the second mounting block 81, and the second rewinder 83 is installed on one of the second mounting blocks 81. The output shaft of the second rewinder 83 is coaxially and fixedly connected to the second winding roller 82. In this embodiment, the second rewinder 83 is preferably set as an electric film winder.

[0056] Referring to Figure 2 and Figure 6 In actual use, the heat-insulating quilt 4 needs to be divided into several modules. Among them, the heat-insulating quilts 4 at the four corners on the framework 1 are fixedly connected to the framework 1 and are always in a flattened state. The heat-insulating quilts 4 on the four sides of the framework 1 can be wound or unfolded according to needs. That is, when the external environment is cold in winter, the second rewinder 83 can be used to fully unfold the heat-insulating quilts 4 around the framework 1, so that the heat-insulating quilts 4 inside the framework 1 are combined and surrounded on the periphery of the framework 1 to ensure the heat preservation effect in the greenhouse. When the external environment is hot in summer, the second rewinder 83 can be used to wind the heat-insulating quilts 4 on the periphery of the framework 1 to ensure that the ventilation effect in the greenhouse is not affected.

[0057] Referring to Figure 2 and Figure 7, a first sunshade net 6 and a third winding device 9 for winding the first sunshade net 6 are further provided at the top inside the framework 1. The first sunshade net 6 is located inside the top dust-proof film 5, and the first sunshade net 6 is formed by combining a plurality of first regional nets 61. The plurality of first regional nets 61 are evenly spaced along the width direction of the framework 1, and each first regional net 61 can block a partial area at the top of the framework 1. When all the first regional nets 61 are fully unfolded, the plurality of first regional nets 61 can form sunshading for the entire area at the top of the framework 1 after combination. The third winding device 9 is used to synchronously wind or unfold the plurality of first regional nets 61. In this embodiment, the first regional net 61 is preferably set to three.

[0058] Refer to Figure 2 and Figure 7 , the third winding device 9 is installed on the framework 1. The third winding device 9 is composed of a first gear 91, a first driving motor 92, a first rack 93 and a first clamping member 94. The first gear 91 rotates on the framework 1. The first driving motor 92 is fixed to the framework 1 by bolts, and the output shaft of the first driving motor 92 is coaxially and fixedly connected to the first gear 91. The first rack 93 slides on the framework 1 along the width direction of the framework 1. The first rack 93 meshes with the first gear 91. The first clamping member 94 is arranged on the first rack 93. The number of the first clamping members 94 is the same as the number of the first regional nets 61, and each first clamping member 94 corresponds to a first regional net 61.

[0059] Refer to Figure 7 and Figure 8 , in this embodiment, the first clamping member 94 is preferably set as a bolt. One end of the first regional net 61 is fixed to the framework 1, and a metal mesh ring is arranged at the other end of the first regional net 61. One end of the bolt passes through the metal mesh ring and is threadedly connected to the first rack 93. When in use, the first driving motor 92 is driven to drive the first gear 91 to rotate. The rotation of the first gear 91 drives the first rack 93 to slide. When the first rack 93 slides, under the action of the first clamping member 94, it drives the plurality of first regional nets 61 to slide synchronously, so as to realize the synchronous winding or unfolding of the first regional nets 61.

[0060] Refer to Figure 7 and Figure 8 , in addition, a third limiting structure 60 is further arranged on the framework 1. The third limiting structure 60 is used to guide and limit the first regional net 61 during the sliding process to prevent the first regional net 61 from sagging under the influence of gravity. The third limiting structure 60 includes a plurality of elastic ropes. The plurality of elastic ropes are evenly spaced along the length direction of the framework 1, and each elastic rope is wound around the framework 1 along the width direction of the framework 1. A third limiting space is formed between one elastic rope and another elastic rope. The first regional net 61 is arranged in the third limiting space.

[0061] Referring to Figure 1 and Figure 9 , the top of the framework 1 is fixedly connected with a heightening frame 10 through bolts. The heightening frame 10 is an overall rectangular frame. The top of the heightening frame 10 is provided with a second sunshade net 20 and a fourth winding device 30 for winding the second sunshade net 20. In this embodiment, both the second sunshade net 20 and the first sunshade net 6 are preferably set as black-and-white double-sided sunshade nets, and the white side of the sunshade net faces outside the framework 1, and the black side faces inside the framework 1. When in use, by utilizing the characteristics that the white side is easy to reflect light and the black side is easy to absorb light, the first sunshade net 6 and the second sunshade net 20 are set. Compared with the prior art method of only using a black sunshade net, it can effectively slow down the problem that the temperature of the sunshade net itself rises due to heat absorption, thereby ensuring the cooling effect in the greenhouse in the high-temperature environment in summer.

[0062] Referring to Figure 1 and Figure 9 , the setting method of the second sunshade net 20 is the same as that of the first sunshade net 6, that is, the second sunshade net 20 is composed of several second regional nets. After all the several second regional nets are unfolded, they can be combined to shade the top area of the heightening frame 10. The fourth winding device 30 can control the synchronous winding or unfolding of the several second regional nets. The fourth winding device 30 is composed of a second gear 301, a second rack 302, a second driving motor 303 and a second clamping member. The connection method and connection relationship among the second gear 301, the second rack 302, the second driving motor 303 and the second clamping member are the same as those of the third winding device 9.

[0063] Referring to Figure 1 and Figure 9 , when in use, the second driving motor 303 is driven to rotate the second gear 301. The rotation of the second gear 301 drives the second rack 302 to slide. When the second rack 302 slides, under the action of the second clamping member, it drives several second regional nets to slide synchronously, so as to realize the synchronous winding or unfolding of the second regional nets. In addition, in order to ensure the normal unfolding or winding of the second sunshade net 20, a second limiting structure 50 is further provided on the heightening frame 10. The setting method of the second limiting structure 50 is the same as that of the third limiting structure 60, that is, the second limiting structure 50 is also composed of several elastic ropes. The several elastic ropes are evenly arranged at intervals along the length direction of the heightening frame 10. Each elastic rope is wound around the heightening frame 10 along the width direction of the heightening frame 10, and a second limiting space can be formed between each elastic rope. The second sunshade net 20 slides in the second limiting space.

[0064] Referring to Figure 1, in this embodiment, the unfolding areas of the first sunshade net 6 and the second sunshade net 20 are both controlled by travel switches. That is, after the first sunshade net 6 and the second sunshade net 20 are fully unfolded, the third winding device 9 and the fourth winding device 30 are automatically controlled by the travel switches to stop running, so as to realize the automatic opening and closing of the first sunshade net 6 and the second sunshade net 20.

[0065] Refer to Figure 1 and Figure 2 , lateral gutters 70 are provided on both sides of the framework 1, and a central gutter 80 is provided on the framework 1. The central gutter 80 is located at the connection of two groups of greenhouse units. The lateral gutters 70 and the central gutter 80 are used to collect rainwater on the top of the greenhouse units. Drainage pipelines 90 are provided at both ends of the lateral gutters 70 and both ends of the central gutter 80. The drainage pipelines 90 are used to drain the accumulated water in the lateral gutters 70 and the central gutter 80 to the ground.

[0066] Refer to Figure 1 and Figure 10 , an irrigation system 100 and a fertilization system 200 are also provided in the greenhouse. Among them, the irrigation system 100 is composed of a water supply main pipe 1001, a water pump 1002, a sedimentation tank 1003, a drain pipe 1004, an irrigation spray pipe, and an irrigation drip pipe. The water supply main pipe 1001 connects the sedimentation tank 1003 with external water sources such as streams. The drain pipe 1004 connects the sedimentation tank 1003 with the irrigation spray pipe and the irrigation drip pipe, and then the on-off of the irrigation system 100 is controlled by an electromagnetic valve; during use, external water is sucked into the sedimentation tank 1003 by the water pump 1002 for sedimentation, and then the sedimented water is introduced into the drain pipe 1004, and then passed through the irrigation spray pipe or the irrigation drip pipe into the greenhouse, so as to realize sprinkler irrigation or drip irrigation of the crops in the greenhouse.

[0067] Refer to Figure 1 and Figure 10 , the fertilization system 200 is composed of a batching tank 2001 and a water supply sub-pipe 2002. The water supply sub-pipe 2002 is used to connect the batching tank 2001 with the drain pipe 1004; during use, the staff introduces fertilizers into the batching tank 2001 for proportioning. After the proportioning is completed, the staff first closes the electromagnetic valve of the irrigation system 100 and opens the electromagnetic valve of the fertilization system 200, so that the water supply sub-pipe 2002 is connected with the drain pipe 1004, and then the proportioned fertilizers are controlled to enter the water supply sub-pipe 2002 by another water pump 1002 and are introduced into the irrigation spray pipe or the irrigation drip pipe from the drain pipe 1004, and finally sprayed from the irrigation spray pipe or the irrigation drip pipe to the crop growth area, so as to achieve the purpose of fertilizing the crops in the greenhouse.

[0068] The implementation principle of the embodiments of this application is as follows: When in use, in a high-temperature environment in summer, the staff can wind up the side dust-proof film 2 and the heat-insulating quilt 4 through the first winding device 7 and the second winding device 8, wind up the second dust-proof film 52 through the fifth winding device 53, and then cooperate with the ventilation structure provided on the framework 1 to achieve the circulating flow of air in the greenhouse, thereby ensuring the ventilation effect in the greenhouse. Then, fully unfold the first sunshade net 6 and the second sunshade net 20 through the third winding device 9 and the fourth winding device 30 to ensure the sunshade effect in the greenhouse. Through the cooperation of the two functions of ventilation and sunshading, effective cooling in the greenhouse can be achieved; in a cold environment in winter, the side dust-proof film 2 and the heat-insulating quilt 4 can be fully unfolded through the first winding device 7 and the second winding device 8, the second dust-proof film 52 can be unfolded through the fifth winding device 53, and the first sunshade net 6 and the second sunshade net 20 can be fully wound up through the third winding device 9 and the fourth winding device 30 to ensure that the external light can enter the greenhouse and raise the temperature in the greenhouse. In cooperation with the second dust-proof film 52 and the heat-insulating quilt 4, the heat preservation effect in the greenhouse can be ensured, thereby ensuring the applicability of the greenhouse in different environments and enabling the greenhouse to have the functions of cooling in summer and heat preservation in winter as a whole.

[0069] The above are all the preferred embodiments of this application. The protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A multi-dimensional temperature-adjustable multi-span greenhouse, comprising a framework (1) and a ventilation structure installed on the framework (1), characterized in that: On the circumferential side of the framework (1), a side dust-proof film (2), an insect-proof net (3), and a heat-insulating quilt (4) are sequentially arranged from outside to inside. On the upper part of the framework (1), a top dust-proof film (5) and a first sunshade net (6) are sequentially arranged from outside to inside. On the framework (1), a first winding device (7) for winding the side dust-proof film (2), a second winding device (8) for winding the heat-insulating quilt (4), and a third winding device (9) for winding the first sunshade net (6) are provided. A heightening frame (10) is fixed on the top of the framework (1). A second sunshade net (20) is arranged on the heightening frame (10). A fourth winding device (30) for winding the second sunshade net (20) is arranged on the heightening frame (10).

2. The multi-dimensional temperature-adjustable multi-span greenhouse according to claim 1, characterized in that: There are two groups of the side dust-proof films (2). One group of the side dust-proof films (2) is used to block the lower half area outside the framework (1), and the other group of the side dust-proof films (2) is used to block the upper half area outside the framework (1). There are two groups of the first winding devices (7) corresponding to the side dust-proof films (2). A first limiting structure (40) for guiding and limiting the unwinding direction of the side dust-proof film (2) is arranged on the framework (1).

3. The multi-dimensional temperature-controlled multi-span greenhouse according to claim 2, wherein: The first limiting structure (40) includes two first intercepting nets (401) fixed on the framework (1). A first limiting space is formed between the two first intercepting nets (401). Both groups of the side dust-proof films (2) are located in the first limiting space.

4. The multi-dimensional temperature-adjustable multi-span greenhouse according to claim 2, wherein: The first winding device (7) includes a first mounting block (71) arranged on the framework (1), a first winding roller (72) rotatably arranged on the first mounting block (71) for winding the first dust-proof film (51), and a first winding machine (73) installed on the first mounting block (71) for driving the first winding roller (72) to rotate. The first dust-proof film (51) is wound around the first winding roller (72).

5. A multi-dimensional temperature-controlled multi-span greenhouse according to claim 1, characterized in that: The second winding device (8) includes a second mounting block (81) fixed on the framework (1), a second winding roller (82) rotatably connected to the second mounting block (81), and a second winding machine (83) installed on the second mounting block (81) for driving the second winding roller (82) to rotate. The heat-insulating quilt (4) is wound around the second winding roller (82).

6. A multi-dimensional temperature-controlled multi-span greenhouse according to claim 1, characterized in that: The first sunshade net (6) includes a number of first area nets (61) for blocking the light in some areas inside the framework (1). After being combined, the number of the area nets is used to block the light in the top area inside the framework (1). The third winding device (9) is used to drive a number of groups of the first area nets (61) to be wound synchronously.

7. A multi-dimensional temperature-controlled multi-span greenhouse according to claim 6, characterized in that: The third winding device (9) includes a first gear (91) rotatably mounted on the framework (1), a first driving motor (92) mounted on the framework (1) for driving the rotation of the first gear (91), a first rack (93) slidably mounted on the framework (1), and a first clamping member (94) fixed to the first rack (93). The first gear (91) and the first rack (93) are meshed with each other. The first clamping member (94) is used for clamping one end of a single first area net (61), and the other end of the first area net (61) is fixed to the framework (1). The number of the first clamping members (94) is the same as the number of the first area nets (61).

8. A multi-dimensional temperature-controlled multi-span greenhouse according to claim 1, characterized in that: The top dust-proof film (5) includes a first dust-proof film (51) fixed to the framework (1) and a second dust-proof film (52) slidably mounted on the framework (1) and capable of being wound up. The first dust-proof film (51) is used for covering a part of the top end of the framework (1), and the second dust-proof film (52) is used for covering another part of the top end of the framework (1). A fifth winding device (53) for winding up the second dust-proof film (52) is provided on the framework (1).

9. The multi-dimensional temperature-controlled multi-span greenhouse according to claim 8, characterized in that: The fifth winding device (53) includes a track (531) fixed to the framework (1), a third winding roller (532) rolling on the track (531), a third winding machine (533) for driving the rotation of the third winding roller (532), and an electric telescopic rod (534) provided on the framework (1). One end of the electric telescopic rod (534) is rotatably connected to the framework (1), and a mounting seat (535) is fixed to the other end of the electric telescopic rod (534). The third winding machine (533) is mounted on the mounting seat (535). The second dust-proof film (52) is wound around the third winding roller (532).

10. A multi-dimensional temperature-controlled multi-span greenhouse according to claim 1, characterized in that: A second limiting structure (50) for guiding and limiting the unwinding direction of the second sunshade net (20) is provided on the heightening frame (10).

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