A vegetable greenhouse lighting regulation system and a regulation device

Abstract

The present application provides a kind of vegetable greenhouse lighting regulation system and regulating device, belong to the technical field of greenhouse lighting, the vegetable greenhouse lighting regulation device, including mounting bracket, light transmission film and air pump.The present application is set by adjusting component, when adjusting the light transmittance of greenhouse, air pump is sent to the corresponding first chamber or third chamber, at this time, the pressure in the first chamber or third chamber is increased, can make the two piston plates inside the corresponding adjusting chamber approach each other, can make the two moving plates in multiple corresponding adjusting components approach each other, can push the corresponding movable plate from the bottom of adjusting chamber inner wall to the top of adjusting chamber inner wall, can make the moving plate change from horizontal to vertical, can shorten the distance between the two piston plates, can increase the thickness of the position adjusting plate, can reduce the light transmittance of the position adjusting plate, realize light regulation.

Description

Technical Field

[0001] The present invention belongs to the technical field of greenhouse lighting, and in particular relates to a vegetable greenhouse lighting adjustment system and an adjustment device. Background Art

[0002] Vegetable greenhouses are framed and film-coated structures with excellent thermal insulation properties, allowing people to enjoy out-of-season vegetables. Typically, vegetable greenhouses use a bamboo or steel frame covered with one or more layers of insulating plastic film, creating a greenhouse space. Lighting conditions within a greenhouse directly influence plant photosynthesis, transpiration, and growth. The primary purpose of regulating greenhouse lighting is to optimize the plant's growth environment and improve crop yield and quality.

[0003] When adjusting the lighting in existing vegetable greenhouses, the shade rate is often adjusted by rolling up the sunshade cloth on the outer shed to change the coverage of the sunshade cloth. Although the sunshade cloth can significantly reduce the transmittance of light in the greenhouse, it will cause the indoor light to be too dark or too bright, which is relatively limited. It is impossible to adjust the local light transmittance according to the crops planted in different areas of the greenhouse. Long-term use will have an adverse effect on the growth and development of plants.

[0004] Therefore, in order to solve the above problems, it is necessary to provide a vegetable greenhouse lighting adjustment system and adjustment device. Summary of the Invention

[0005] The purpose of the present invention is to provide a lighting adjustment device for a vegetable greenhouse, which aims to solve the problem in the prior art that it is impossible to adjust the local light transmittance according to the crops planted in different areas inside the greenhouse, and long-term use will have an adverse effect on the growth and development of the plants.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A lighting adjustment device for a vegetable greenhouse includes a mounting frame, a light-transmitting film, and an air pump. The mounting frame includes a plurality of equally spaced upright posts, an arch frame, and a longitudinal tie rod.

[0008] Each of the two adjacent arch frames is divided into multiple adjustment areas by several longitudinal pull rods, and each adjustment area is provided with an adjustment plate, and an adjustment cavity is opened inside each adjustment plate, and two symmetrically arranged piston plates are slidably connected inside each adjustment cavity. The bottoms of the two piston plates on opposite sides of the same adjustment cavity are fixedly connected with a connecting plate that is slidably connected to the corresponding inner wall of the adjustment cavity, and each connecting plate is provided with a plurality of equidistantly distributed installation grooves, and an adjustment component is provided inside each installation groove.

[0009] Preferably, the adjustment assembly includes two symmetrically arranged movable plates, the sides of the two movable plates away from each other are rotatably connected to the inner wall of the corresponding mounting groove, and the opposite sides of the two movable plates are rotatably connected to the same movable plate.

[0010] Preferably, when the two piston plates inside the same regulating chamber approach each other, they can squeeze the two movable plates in the regulating assembly close to each other, push the movable plate from the bottom of the inner wall of the regulating chamber to the top of the inner wall of the regulating chamber, and make the movable plate change from horizontal to longitudinal.

[0011] Preferably, the interior of each regulating chamber is divided into a first chamber, a second chamber and a third chamber by the two piston plates, and each regulating plate is provided with a first guide hole and a second guide hole connected to the corresponding first chamber and third chamber on the side close to the corresponding longitudinal pull rod.

[0012] Preferably, the interior of each longitudinal tie rod is arranged as a cavity, and each longitudinal tie rod is communicated with the air pump.

[0013] Preferably, each of the first flow guide holes is connected to the corresponding longitudinal pull rod through a first solenoid valve, and each of the second flow guide holes is connected to the corresponding longitudinal pull rod through a second solenoid valve, and the first chamber and the third chamber can be evacuated and supplied with air through the air pump.

[0014] Preferably, the adjustment plate, piston plate, movable plate and activity plate are all made of translucent materials, and light passing through the translucent film can pass through the adjustment plate, piston plate, movable plate and activity plate into the interior of the greenhouse.

[0015] Preferably, when the air pump supplies air to the first chamber or the third chamber, the pressure inside the first chamber or the third chamber increases, which can make the two piston plates corresponding to the inside of the regulating chamber approach each other, can make the two movable plates in the multiple corresponding regulating components approach each other, and can make the bottoms of the two movable plates contact each other.

[0016] Preferably, when the air pump evacuates the first chamber or the third chamber, the pressure inside the first chamber or the third chamber becomes smaller, which can make the two piston plates corresponding to the inside of the regulating chamber move away from each other, can make the two movable plates in the multiple corresponding regulating assemblies move away from each other, and can make the bottom of the movable plate contact with the bottom of the inner wall of the regulating chamber.

[0017] A vegetable greenhouse lighting adjustment system includes a controller, and the air pump, a first solenoid valve and a second solenoid valve are all electrically connected to the controller.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention adjusts the light transmittance of the greenhouse by setting the adjustment component. The controller controls the first solenoid valve and the second solenoid valve of the corresponding position adjustment plate to open, so that the air pump supplies air to the corresponding first chamber or the third chamber. At this time, the internal pressure of the first chamber or the third chamber becomes larger, which can make the two piston plates inside the corresponding adjustment chamber approach each other. Since the connecting plate is slidably connected to the bottom inner wall of the adjustment chamber, when the connecting plate remains flat, the two movable plates in the multiple corresponding adjustment components can be squeezed to approach each other, and the corresponding movable plate can be pushed from the bottom of the inner wall of the adjustment chamber to the top of the inner wall of the adjustment chamber, and the movable plate can be transformed from horizontal to vertical, which can shorten the distance between the two piston plates, increase the thickness of the position adjustment plate, and reduce the light transmittance of the position adjustment plate to achieve lighting adjustment.

[0020] 2. The present invention is provided with a longitudinal pull rod and an air pump. When the air pump supplies air to the first chamber or the third chamber, the internal pressure of the first chamber or the third chamber increases, which can make the two piston plates inside the corresponding adjustment chamber close to each other, and can make the two movable plates in the multiple corresponding adjustment assemblies close to each other, and can push the corresponding movable plate to move from the bottom of the inner wall of the adjustment chamber to the top of the inner wall of the adjustment chamber, and can make the movable plate change from horizontal to vertical, and can shorten the distance between the two piston plates. At this time, the air pump is used to pump air and supply air to the first chamber and the third chamber, and the pressure inside the first chamber and the third chamber can be adjusted. When the first chamber When the internal pressure of the chamber is greater than the internal pressure of the third chamber, the two piston plates drive the multiple adjustment components to move toward the third chamber under the action of the connecting plate. When the internal pressure of the first chamber is less than the internal pressure of the third chamber, the two piston plates corresponding to the adjustment chamber drive the multiple adjustment components to move toward the first chamber under the action of the connecting plate. Therefore, by adjusting the pressure inside the first chamber and the third chamber, the position of the connecting plate and the adjustment component can be moved, and the transmittance of different positions of the adjustment plate can be adjusted. The transmittance of the corresponding position can be adjusted according to different crops inside the greenhouse, thereby improving the growth environment of the crops. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute 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 of the present invention. In the accompanying drawings:

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 Schematic diagram of the internal structure of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the mounting frame and the adjustment plate of the present invention;

[0025] Figure 4 It is a structural schematic diagram of the mounting frame of the present invention;

[0026] Figure 5 It is a structural schematic diagram of the adjustment plate of the present invention;

[0027] Figure 6 It is a structural schematic diagram of the adjustment plate and the longitudinal pull rod of the present invention;

[0028] Figure 7 Schematic diagram of the internal structure of the adjustment plate of the present invention;

[0029] Figure 8 For the present invention Figure 7 A magnified view of the structure of the middle part A;

[0030] Figure 9 Schematic diagram of the structure of the piston plate and the adjustment assembly of the present invention;

[0031] Figure 10 For the present invention Figure 9 A magnified view of the structure of the middle B section;

[0032] Figure 11 It is a structural schematic diagram of the regulating assembly of the present invention;

[0033] Figure 12 For the present invention Figure 11 Enlarged view of the structure of part C in the middle.

[0034] In the figure: 1. Mounting frame; 11. Post; 12. Arch; 13. Longitudinal pull rod; 14. Adjustment area; 2. Light-transmitting film; 3. Air pump; 4. Adjustment plate; 41. Adjustment chamber; 42. Piston plate; 43. Connecting plate; 44. Mounting groove; 45. First chamber; 46. Second chamber; 47. Third chamber; 48. First guide hole; 49. Second guide hole; 410. First solenoid valve; 411. Second solenoid valve; 5. Adjustment assembly; 51. Moving plate; 52. Movable plate. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] Example 1

[0037] When adjusting the lighting in existing vegetable greenhouses, the shade cloth on the outer shed is often rolled up to change the coverage of the shade cloth, thereby adjusting the shading rate. Although the shade cloth can significantly reduce the transmittance of light in the greenhouse, it will cause the indoor light to be too dark or too bright, which is quite limited.

[0038] See also Figure 1 - Figure 6 The present invention provides the following technical solutions: a lighting adjustment device for a vegetable greenhouse, comprising a mounting frame 1, a light-transmitting film 2 and an air pump 3, wherein the mounting frame 1 comprises a plurality of equally spaced upright posts 11, an arch frame 12 and a longitudinal tie rod 13;

[0039] like Figures 1 to 3 As shown, two adjacent arch frames 12 are divided into multiple adjustment areas 14 of the same size by several longitudinal pull rods 13, and each adjustment area 14 is provided with an adjustment plate 4. An adjustment cavity 41 is provided inside each adjustment plate 4, and two symmetrically arranged piston plates 42 are slidably connected to the inside of each adjustment cavity 41. The bottoms of the opposite sides of the two piston plates 42 inside the same adjustment cavity 41 are fixedly connected with a connecting plate 43 that is slidably connected to the inner wall of the corresponding adjustment cavity 41, and each connecting plate 43 is provided with a plurality of equidistantly distributed installation grooves 44, and an adjustment component 5 is provided inside each installation groove 44.

[0040] The adjustment assembly 5 includes two symmetrically arranged movable plates 51 . The sides of the two movable plates 51 away from each other are rotatably connected to the inner wall of the corresponding mounting groove 44 , and the opposite sides of the two movable plates 51 are rotatably connected to the same movable plate 52 .

[0041] like Figures 7 to 12 As shown, when the two piston plates 42 inside the same regulating chamber 41 approach each other, they can squeeze the two movable plates 51 in the regulating assembly 5 to approach each other, and can push the movable plate 52 from the bottom of the inner wall of the regulating chamber 41 to the top of the inner wall of the regulating chamber 41, and can make the movable plate 51 change from horizontal to vertical.

[0042] like Figures 11 to 12 As shown, when the movable plate 51 changes from horizontal to vertical, the thickness of the adjustment plate 4 can be compensated by the width of the movable plate 51, the thickness of the adjustment plate 4 at this position can be greatly increased, and the transmittance can be reduced. The thickness increased on the adjustment plate 4 in the horizontal state of the movable plate 51 is lower than the thickness increased on the adjustment plate 4 in the vertical state of the movable plate 51.

[0043] Gas can pass through the first guide hole 48 and the second guide hole 49 into the first chamber 45 and the third chamber 47. Under normal conditions, that is, when the first chamber 45 and the third chamber 47 are not injected with gas, the two piston plates 42 in the same adjustment chamber 41 are away from each other and respectively contact the left and right inner walls of the adjustment chamber 41. The bottoms of the two movable plates 51 in each adjustment component 5 are in contact with the bottom inner wall of the adjustment chamber 41. The movable plates 51 and the connecting plates 43 in the multiple adjustment components 5 cooperate to form a flat state, which can keep the movable plates 51 and the connecting plates 43 at the same height. The movable plates 51 and the connecting plates 43 in the flat state can increase the thickness of the adjustment plate 4. Since the increase in the thickness of the film will cause multiple reflections and interference of light, part of the light can be reflected or absorbed, which can reduce the transmittance of the corresponding adjustment plate 4. The thickness of the movable plate 51 and the connecting plate 43 should be set according to actual needs.

[0044] like Figure 8 As shown, when the movable plate 51 is in the horizontal state, that is, the movable plate 51 is in the flat state, the movable plate 51 and the connecting plate 43 can just completely cover the adjustment cavity 41, as shown in FIG. Figure 12 As shown, when the movable plate 51 is in the longitudinal state, that is, the bottoms of the movable plates 51 are in contact with each other, the distance between the corresponding two piston plates 42 will be shortened, and there will be no movable plate 51 and connecting plate 43 in the corresponding partial area inside the regulating chamber 41.

[0045] Assume that the light transmittance of the adjustment plate 4 without the movable plate 51 and the connecting plate 43 is a, the light transmittance of the adjustment plate 4 at the corresponding position when the movable plate 51 and the connecting plate 43 are in a flat state is b, and the light transmittance of the adjustment plate 4 at the corresponding position when the movable plate 51 is in a vertical state is C, then the light transmittance a>b>c;

[0046] When the movable plates 51 inside the adjustment plate 4 are in a longitudinal state, the transmittance of the adjustment plate 4 at the corresponding position of the connecting plate 43 between the two piston plates 42 is b, and the transmittance of the adjustment plate 4 at the corresponding position of the moving plate 51 between the two piston plates 42 is c. Since the transmittances b and c in this area are intermittently distributed, the transmittance in the overall area will be much lower than the transmittance of the adjustment plate 4 when the movable plate 51 and the connecting plate 43 are in a flat state.

[0047] The adjusting plate 4, piston plate 42, movable plate 51 and movable plate 52 are all made of translucent materials and should be consistent, such as glass. You can choose according to actual needs. The light passing through the translucent film 2 can pass through the adjusting plate 4, piston plate 42, movable plate 51 and movable plate 52 into the interior of the greenhouse.

[0048] When the air pump 3 supplies air to the first chamber 45 or the third chamber 47, the internal pressure of the first chamber 45 or the third chamber 47 increases, which can make the two piston plates 42 inside the corresponding adjustment chamber 41 approach each other, and can make the two movable plates 51 in the multiple corresponding adjustment components 5 approach each other, and can make the bottoms of the two movable plates 51 contact each other.

[0049] When the air pump 3 evacuates the first chamber 45 or the third chamber 47, the internal pressure of the first chamber 45 or the third chamber 47 becomes smaller, which can make the two piston plates 42 inside the corresponding regulating chamber 41 move away from each other, and can make the two movable plates 51 in the multiple corresponding regulating components 5 move away from each other, and can make the bottom of the movable plate 51 contact with the bottom of the inner wall of the regulating chamber 41.

[0050] By evacuating the first chamber 45 or the third chamber 47 through the air pump 3, the two piston plates 42 inside the corresponding adjustment chamber 41 can be moved away from each other, the two movable plates 51 in the corresponding multiple adjustment components 5 can be moved away from each other, and the movable plates 51 can be changed from longitudinal to transverse.

[0051] It should be noted that when it is necessary to adjust the transmittance of the greenhouse, the first solenoid valve 410 and the second solenoid valve 411 of the corresponding position adjustment plate 4 are opened by the controller, so that the air pump 3 supplies air to the corresponding first chamber 45 or the third chamber 47. At this time, the internal pressure of the first chamber 45 or the third chamber 47 increases, which can make the two piston plates 42 inside the corresponding adjustment chamber 41 approach each other. Since the connecting plate 43 is slidably connected to the bottom inner wall of the adjustment chamber 41, when the connecting plate 43 remains flat, the two movable plates 51 in the multiple corresponding adjustment components 5 can be squeezed to approach each other, and the corresponding movable plate 52 can be pushed from the bottom of the inner wall of the adjustment chamber 41 to the top of the inner wall of the adjustment chamber 41, which can make the movable plate 51 change from horizontal to vertical, and the bottoms of the two movable plates 51 can contact each other, so that the thickness of the adjustment plate 4 at the corresponding position of the movable plate 51 is greatly increased, the distance between the two piston plates 42 can be shortened, and the transmittance of the adjustment plate 4 at this position can be reduced to achieve lighting adjustment.

[0052] To sum up, the present invention, through the setting of the adjustment component 5, when adjusting the transmittance of the greenhouse, controls the first solenoid valve 410 and the second solenoid valve 411 of the corresponding position adjustment plate 4 to open through the controller, so that the air pump 3 supplies air to the corresponding first chamber 45 or the third chamber 47. At this time, the internal pressure of the first chamber 45 or the third chamber 47 becomes larger, which can make the two piston plates 42 inside the corresponding adjustment chamber 41 approach each other. Since the connecting plate 43 is slidably connected to the bottom inner wall of the adjustment chamber 41, when the connecting plate 43 remains flat, the two movable plates 51 in the multiple corresponding adjustment components 5 can be squeezed to approach each other, and the corresponding movable plate 52 can be pushed from the bottom of the inner wall of the adjustment chamber 41 to the top of the inner wall of the adjustment chamber 41, and the movable plate 51 can be changed from horizontal to vertical, the distance between the two piston plates 42 can be shortened, the thickness of the position adjustment plate 4 can be increased, and the transmittance of the position adjustment plate 4 can be reduced to achieve lighting adjustment.

[0053] Example 2

[0054] Based on the above embodiment, different crops are planted in different areas of the greenhouse, and the local light transmittance cannot be adjusted according to the crops planted in different areas. Long-term use will affect the growth and development of plants in different areas of the greenhouse.

[0055] like Figures 3 to 7 As shown, the interior of each regulating chamber 41 is divided into a first chamber 45, a second chamber 46 and a third chamber 47 by two piston plates 42, and each regulating plate 4 is provided with a first guide hole 48 and a second guide hole 49 connected to the corresponding first chamber 45 and the third chamber 47 on one side close to the corresponding longitudinal pull rod 13.

[0056] The interior of each longitudinal tie rod 13 is a hollow cavity, and each longitudinal tie rod 13 is connected to the air pump 3 .

[0057] Each first guide hole 48 is connected to the corresponding longitudinal pull rod 13 through the first solenoid valve 410, and each second guide hole 49 is connected to the corresponding longitudinal pull rod 13 through the second solenoid valve 411. The first chamber 45 and the third chamber 47 can be evacuated and supplied with air through the air pump 3.

[0058] The solenoid valve is a prior art and will not be described in detail here.

[0059] It should be noted that when the air pump 3 supplies air to the first chamber 45 or the third chamber 47, the pressure inside the first chamber 45 or the third chamber 47 becomes larger, which can cause the two piston plates 42 inside the corresponding adjusting chamber 41 to move closer to each other, can cause the two moving plates 51 in the corresponding adjusting assembly 5 to move closer to each other, can push the corresponding movable plate 52 to move from the bottom of the inner wall of the adjusting chamber 41 to the top of the inner wall of the adjusting chamber 41, can cause the moving plate 51 to change from a transverse state to a longitudinal state, and can shorten the distance between the two piston plates 42. At this time, by the air pump 3 supplying air to the first chamber 45 and the third chamber 47, the pressure inside the first chamber 45 and the third chamber 47 can be adjusted. When the pressure inside the first chamber 45 becomes larger and the pressure inside the third chamber 47 becomes smaller, i.e., the pressure inside the first chamber 45 is greater than the pressure inside the third chamber 47, the two piston plates 42 inside the corresponding adjusting chamber 41 move towards the third chamber 47 under the action of the connecting plate 43 and drive the plurality of adjusting assemblies 5 to move towards the third chamber 47. When the pressure inside the first chamber 45 becomes smaller and the pressure inside the third chamber 47 becomes larger, i.e., the pressure inside the first chamber 45 is smaller than the pressure inside the third chamber 47, the two piston plates 42 inside the corresponding adjusting chamber 41 move towards the first chamber 45 under the action of the connecting plate 43 and drive the plurality of adjusting assemblies 5 to move towards the first chamber 45. Thus, by adjusting the pressure inside the first chamber 45 and the third chamber 47, the position of the connecting plate 43 and the adjusting assembly 5 can be moved, and the light transmittance of the adjusting plate 4 at different positions can be adjusted.

[0060] Since the angle of solar radiation is variable, by adjusting the pressure inside the first chamber 45 and the third chamber 47, the position of the connecting plate 43 and the adjusting assembly 5 can be moved, and the position of the connecting plate 43 and the adjusting assembly 5 can be changed according to the angle of solar radiation, which ensures the consistency of the light transmittance of the adjusting plate 4 in the corresponding planting area and avoids the change of the angle of solar radiation affecting the light intensity of the corresponding planting area.

[0061] By adjusting the pressure inside the first chamber 45 and the third chamber 47, the light transmittance of the adjusting plate 4 in three states can be adjusted. The first is the light transmittance of the adjusting plate 4 when the moving plate 51 and the connecting plate 43 are in a flat state, the second is the light transmittance of the adjusting plate 4 when there is no moving plate 51 and connecting plate 43 shielding, and the third is the light transmittance of the adjusting plate 4 when the flat connecting plate 43 and the moving plate 51 in a longitudinal state are shielded.

[0062] In summary, the present invention is provided with the longitudinal pull rod 13 and the air pump 3. When the air pump 3 supplies air to the first chamber 45 or the third chamber 47, the internal pressure of the first chamber 45 or the third chamber 47 increases, which can make the two piston plates 42 in the corresponding adjustment chamber 41 close to each other, and can make the two movable plates 51 in the multiple corresponding adjustment components 5 close to each other, and can push the corresponding movable plate 52 to move from the bottom of the inner wall of the adjustment chamber 41 to the top of the inner wall of the adjustment chamber 41, and can make the movable plate 51 change from horizontal to vertical, and can shorten the distance between the two piston plates 42. At this time, the air pump 3 is used to pump air and supply air to the first chamber 45 and the third chamber 47, so as to adjust the internal pressure of the first chamber 45 and the third chamber 47. When the internal pressure of the first chamber 45 is greater than the internal pressure of the third chamber 47, the two piston plates 42 drive the multiple adjustment components 5 to move toward the third chamber 47 under the action of the connecting plate 43. When the internal pressure of the first chamber 45 is less than the internal pressure of the third chamber 47, the two piston plates 42 corresponding to the adjustment chamber 41 drive the multiple adjustment components 5 to move toward the first chamber 45 under the action of the connecting plate 43. Therefore, by adjusting the internal pressure of the first chamber 45 and the third chamber 47, the position movement of the connecting plate 43 and the adjustment component 5 can be achieved, and the transmittance of different positions of the adjustment plate 4 can be adjusted. The transmittance of the corresponding position can be adjusted according to different crops in the greenhouse, thereby improving the growth environment of the crops.

[0063] Example 3

[0064] A vegetable greenhouse lighting adjustment system includes a controller, an air pump 3, a first solenoid valve 410, and a second solenoid valve 411 are all electrically connected to the controller;

[0065] The working states of the air pump 3, the first solenoid valve 410 and the second solenoid valve 411 can be controlled by the controller. The controller is a prior art and will not be described in detail here.

[0066] When it is necessary to adjust the lighting, the controller controls the first solenoid valve 410 and the second solenoid valve 411 of the corresponding adjustment plate 4 to work according to the crop needs in different planting areas. Then the controller controls the air pump 3 to extract and supply air to the corresponding first chamber 45 or the third chamber 47, adjusts the state and position of the connecting plate 43 and the adjustment component 5, and realizes the adjustment of light transmittance.

[0067] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A lighting adjustment device for a vegetable greenhouse, comprising a mounting frame (1), a light-transmitting film (2) and an air pump (3), wherein the mounting frame (1) comprises a plurality of equally spaced upright posts (11), an arch frame (12) and a longitudinal tie rod (13), and is characterized in that: The two adjacent arches (12) are divided into a plurality of adjustment areas (14) by a plurality of longitudinal pull rods (13), and an adjustment plate (4) is provided in each adjustment area (14). An adjustment cavity (41) is provided inside each adjustment plate (4), and two symmetrically arranged piston plates (42) are slidably connected inside each adjustment cavity (41). The bottoms of the two piston plates (42) on opposite sides of the same adjustment cavity (41) are fixedly connected with a connecting plate (43) slidably connected to the inner wall of the corresponding adjustment cavity (41), and a plurality of equally spaced mounting grooves (44) are provided on each connecting plate (43), and an adjustment component (5) is provided inside each mounting groove (44); The adjustment assembly (5) comprises two symmetrically arranged movable plates (51), the sides of the two movable plates (51) that are away from each other are both rotatably connected to the inner wall of the corresponding mounting groove (44), and the opposite sides of the two movable plates (51) are both rotatably connected to the same movable plate (52); When the two piston plates (42) inside the same regulating chamber (41) are close to each other, they can squeeze the two movable plates (51) in the regulating assembly (5) to be close to each other, and can push the movable plate (52) to move from the bottom of the inner wall of the regulating chamber (41) to the top of the inner wall of the regulating chamber (41), and can make the movable plate (51) change from the horizontal direction to the vertical direction; The adjusting plate (4), the piston plate (42), the movable plate (51) and the movable plate (52) are all made of light-transmitting materials, and light passing through the light-transmitting film (2) can pass through the adjusting plate (4), the piston plate (42), the movable plate (51) and the movable plate (52) to enter the interior of the greenhouse; When the movable plate (51) changes from the horizontal direction to the vertical direction, the thickness of the adjustment plate (4) can be compensated by the width of the movable plate (51), the thickness of the adjustment plate (4) at that position can be increased, and the light transmittance can be reduced.

2. The vegetable greenhouse lighting adjustment device according to claim 1, characterized in that: The interior of each regulating chamber (41) is divided into a first chamber (45), a second chamber (46) and a third chamber (47) by the two piston plates (42), and each regulating plate (4) is provided with a first guide hole (48) and a second guide hole (49) on the side close to the corresponding longitudinal pull rod (13) and connected to the corresponding first chamber (45) and the third chamber (47).

3. The vegetable greenhouse lighting adjustment device according to claim 2, characterized in that: The interior of each longitudinal pull rod (13) is arranged as a cavity, and each longitudinal pull rod (13) is communicated with the air pump (3).

4. The vegetable greenhouse lighting adjustment device according to claim 3, characterized in that: Each of the first flow guide holes (48) is connected to the corresponding longitudinal pull rod (13) through a first solenoid valve (410), and each of the second flow guide holes (49) is connected to the corresponding longitudinal pull rod (13) through a second solenoid valve (411). The air pump (3) can be used to evacuate and supply air to the first chamber (45) and the third chamber (47).

5. The vegetable greenhouse lighting adjustment device according to claim 4, characterized in that: When the air pump (3) supplies air to the first chamber (45) or the third chamber (47), the internal pressure of the first chamber (45) or the third chamber (47) increases, which can make the two piston plates (42) corresponding to the inside of the regulating chamber (41) approach each other, and can make the two movable plates (51) in the multiple corresponding regulating assemblies (5) approach each other, and can make the bottoms of the two movable plates (51) contact each other.

6. The vegetable greenhouse lighting adjustment device according to claim 5, characterized in that: When the air pump (3) evacuates the first chamber (45) or the third chamber (47), the internal pressure of the first chamber (45) or the third chamber (47) decreases, which can make the two piston plates (42) corresponding to the inside of the regulating chamber (41) move away from each other, and can make the two movable plates (51) in the multiple corresponding regulating assemblies (5) move away from each other, and can make the bottom of the movable plate (51) contact the bottom of the inner wall of the regulating chamber (41).

7. A vegetable greenhouse lighting adjustment system, used for the vegetable greenhouse lighting adjustment device according to any one of claims 4 to 6, characterized in that: A controller is included, and the air pump (3), the first solenoid valve (410) and the second solenoid valve (411) are all electrically connected to the controller.

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