Vegetable greenhouse lighting adjusting system and adjusting device

Abstract

The invention provides a vegetable greenhouse lighting adjusting system and an adjusting device, and belongs to the technical field of greenhouse lighting, and the vegetable greenhouse lighting adjusting device comprises a mounting rack, a light-transmitting film and an air pump. Through the arrangement of the adjusting assembly, when the light transmittance of the greenhouse is adjusted, the ventilation pump supplies air to the corresponding first cavity or the third cavity, at the moment, the pressure intensity in the first cavity or the third cavity is increased, two piston plates in the corresponding adjusting cavity can be close to each other, and the light transmittance of the greenhouse is adjusted. Two moving plates in a plurality of corresponding adjusting assemblies can get close to each other, corresponding movable plates can be pushed to move from the bottom of the inner wall of an adjusting cavity to the top of the inner wall of the adjusting cavity, the moving plates can be changed from the transverse direction to the longitudinal direction, the distance between two piston plates can be shortened, the thickness of the position adjusting plate can be increased, and the light transmittance of the position adjusting plate can be reduced. Lighting adjustment is realized.

Description

Technical Field

[0001] The 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 greenhouse is a frame-covered structure with excellent thermal insulation performance. Its appearance allows people to eat off-season vegetables. Generally, vegetable greenhouses use bamboo or steel structure frames, covered with one or more layers of thermal insulation plastic film, thus forming a greenhouse space. The lighting conditions in the greenhouse directly affect the photosynthesis, transpiration and growth of plants. The main purpose of adjusting the greenhouse lighting is to optimize the growth environment of plants and improve the yield and quality of crops.

[0003] When adjusting the lighting in existing vegetable greenhouses, the shading rate is often adjusted by rolling up the shade cloth on the outer shed to change the coverage of the shade cloth. 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 relatively limited. It is impossible to adjust the local 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, aiming 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 comprises a mounting frame, a light-transmitting film and an air pump. The mounting frame comprises 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 a plurality of adjustment areas by a plurality of longitudinal pull rods, each of the adjustment areas is provided with an adjustment plate, each of the adjustment plates is provided with an adjustment cavity, each of the adjustment cavities is slidably connected with two symmetrically arranged piston plates, the bottoms of the two piston plates on opposite sides of the same adjustment cavity are fixedly connected with connecting plates slidably connected with the corresponding inner walls of the adjustment cavities, each of the connecting plates is provided with a plurality of equidistantly distributed installation grooves, and an adjustment component is provided inside each of the installation grooves.

[0009] Preferably, the adjustment assembly comprises 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 vertical.

[0011] Preferably, the interior of each adjusting chamber is divided into a first chamber, a second chamber and a third chamber by the two piston plates, and each adjusting plate is provided with a first flow guide hole and a second flow guide hole connected to the corresponding first chamber and third chamber on one 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 an 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 air pump can evacuate and deliver air to the first chamber and the third chamber.

[0014] Preferably, the adjustment plate, piston plate, movable plate and activity plate are all made of light-transmitting materials, and the light passing through the light-transmitting film can pass through the adjustment plate, piston plate, movable plate and activity plate to enter 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 internal pressure of 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 components 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 comprises 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, through the setting of the adjustment component, when adjusting the light transmittance of the greenhouse, controls the first solenoid valve and the second solenoid valve of the corresponding position adjustment plate to open through the controller, 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 changed 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, so as to realize lighting adjustment.

[0020] 2. The present invention is provided with a longitudinal pull rod and an air pump. When the air pump delivers 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 in the corresponding adjustment chamber approach each other, can make the two movable plates in the multiple corresponding adjustment components approach each other, 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, can make the movable plate change from the horizontal direction to the vertical direction, can shorten the distance between the two piston plates, at this time, the air pump is used to evacuate and deliver air to the first chamber and the third chamber, and the internal pressure of 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 internal pressure of 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 in 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 It is a 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 schematic structural diagram of the adjustment plate and the longitudinal tie rod of the present invention;

[0028] Figure 7 It is a 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] Fig. 9 It is a structural schematic diagram of the piston plate and the adjustment assembly of the present invention;

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

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

[0033] Fig.12 For the present invention Fig.11 Enlarged view of the structure of section C.

[0034] In the figure: 1. mounting frame; 11. column; 12. arch frame; 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 be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0036] Embodiment 1

[0037] When adjusting the lighting in existing vegetable greenhouses, the shade rate is often adjusted by rolling up the shade cloth on the outer shed to change the coverage of the shade cloth. 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 vegetable greenhouse lighting adjustment device, comprising a mounting frame 1, a light-transmitting film 2 and an air pump 3, the mounting frame 1 comprising a plurality of equally spaced columns 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 a plurality of adjustment areas 14 of the same size by a plurality of longitudinal pull rods 13, each adjustment area 14 is provided with an adjustment plate 4, each adjustment plate 4 is provided with an adjustment cavity 41, each adjustment cavity 41 is slidably connected with two symmetrically arranged piston plates 42, the bottoms of the two piston plates 42 on opposite sides of the same adjustment cavity 41 are fixedly connected with connecting plates 43 slidably connected with the inner wall of the corresponding adjustment cavity 41, each connecting plate 43 is provided with a plurality of equidistantly distributed installation grooves 44, and each installation groove 44 is provided with an adjustment component 5.

[0040] The adjustment assembly 5 includes two symmetrically arranged moving plates 51 . The sides of the two moving plates 51 away from each other are rotatably connected to the inner wall of the corresponding mounting groove 44 . The opposite sides of the two moving 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 Figure 11 to Figure 12 As shown, when the movable plate 51 changes from horizontal to vertical, the thickness of the adjusting plate 4 can be compensated by the width of the movable plate 51, the thickness of the adjusting plate 4 at this position can be greatly increased, and the transmittance can be reduced. The thickness increased on the adjusting plate 4 in the horizontal state of the movable plate 51 is lower than the thickness increased on the adjusting plate 4 in the vertical state of the movable plate 51.

[0043] The 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 light 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 a horizontal state, that is, the movable plate 51 is in a flat state, the movable plate 51 and the connecting plate 43 can just completely cover the adjustment cavity 41, as shown in FIG. Fig.12 As shown, when the movable plate 51 is in the longitudinal state, that is, the bottoms of the movable plate 51 are in contact with each other, the distance between the corresponding two piston plates 42 will be shortened, and the movable plate 51 and the connecting plate 43 are absent in a partial area inside the corresponding regulating chamber 41 .

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

[0046] When the movable plates 51 inside the adjusting plate 4 are in a longitudinal state, the light transmittance of the adjusting plate 4 at the corresponding position of the connecting plate 43 between the two piston plates 42 is b, and the light transmittance of the adjusting plate 4 at the corresponding position of the moving plate 51 between the two piston plates 42 is c. Since the light transmittances in this area are intermittently distributed as b and c, the light transmittance in the overall area will be much smaller than the light transmittance of the adjusting 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 to enter 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 adjusting chamber 41 approach each other, and can make the two movable plates 51 in the multiple corresponding adjusting 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 decreases, which can make the two piston plates 42 inside the corresponding adjusting chamber 41 move away from each other, and can make the two movable plates 51 in the multiple corresponding adjusting 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 adjusting 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 adjusting chamber 41 can be moved away from each other, the two movable plates 51 in the corresponding multiple adjusting components 5 can be moved away from each other, and the movable plate 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 controlled by the controller to open, 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, and the movable plate 51 can be changed from horizontal to vertical, and the bottoms of the two movable plates 51 can be made to 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 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, and the movable plate 51 can be changed from horizontal to vertical, and 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] Embodiment 2

[0054] Based on the above embodiments, 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 adjusting 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 adjusting 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 arranged as a cavity, and each longitudinal tie rod 13 is communicated with the air pump 3 .

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

[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 delivers 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 approach each other, and can make the two movable plates 51 in the multiple corresponding adjustment components 5 approach each other, and can push the corresponding movable plate 52 to move from the bottom of the inner wall of the adjustment chamber 41 toward 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 evacuate and deliver air to the first chamber 45 and the third chamber 47, and the pressure inside the first chamber 45 and the third chamber 47 can be adjusted. When the internal pressure of the first chamber 45 increases, the internal pressure of the third chamber 47 increases. When the pressure inside the first chamber 45 decreases, that is, when the pressure inside the first chamber 45 is greater than the pressure inside the third chamber 47, the two piston plates 42 corresponding to the adjusting chamber 41 drive the multiple adjusting components 5 to move toward the third chamber 47 under the action of the connecting plate 43. When the pressure inside the first chamber 45 decreases and the pressure inside the third chamber 47 increases, that is, when the pressure inside the first chamber 45 is less than the pressure inside the third chamber 47, the two piston plates 42 corresponding to the adjusting chamber 41 drive the multiple adjusting components 5 to move toward the first chamber 45 under the action of the connecting plate 43. Therefore, by adjusting the pressure inside the first chamber 45 and the third chamber 47, the position movement of the connecting plate 43 and the adjusting component 5 can be realized, thereby realizing the adjustment of the light transmittance of different positions of the adjusting plate 4.

[0060] Since the angle of solar radiation is variable, the position of the connecting plate 43 and the adjustment component 5 can be moved by adjusting the pressure inside the first chamber 45 and the third chamber 47. The position of the connecting plate 43 and the adjustment component 5 can be changed according to the angle of solar radiation to ensure the consistency of the light transmittance of the adjustment plate 4 in the corresponding planting area and avoid the change of the solar radiation angle 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 transmittance of the adjustment plate 4 can be adjusted in three states. The first is the transmittance of the adjustment plate 4 when the movable plate 51 and the connecting plate 43 are in a flat state, the second is the transmittance of the adjustment plate 4 when there is no moving plate 51 and the connecting plate 43 blocking it, and the third is the transmittance of the adjustment plate 4 when it is blocked by the connecting plate 43 in a flat state and the moving plate 51 in a longitudinal state.

[0062] In summary, the present invention is provided with the longitudinal pull rod 13 and the air pump 3. When the air pump 3 delivers 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 approach each other, can make the two movable plates 51 in the multiple corresponding adjustment components 5 approach each other, 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, can make the movable plate 51 change from horizontal to vertical, can shorten the distance between the two piston plates 42, and at this time, the air pump 3 is used to evacuate and deliver 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 pressure inside the first chamber 45 is greater than the pressure inside 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 pressure inside the first chamber 45 is less than the pressure inside 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 pressure inside 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 light transmittance of different positions of the adjustment plate 4 can be adjusted. The light transmittance of the corresponding position can be adjusted according to different crops in the greenhouse, thereby improving the growth environment of the crops.

[0063] Embodiment 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 evacuate and deliver 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 description is only a preferred embodiment of the present invention and is 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 can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope 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 uprights (11), an arch frame (12) and a longitudinal tie rod (13), characterized in that: Each of the two adjacent arch frames (12) is divided into a plurality of adjustment areas (14) by a plurality of longitudinal pull rods (13), and each of the adjustment areas (14) is provided with an adjustment plate (4), and each of the adjustment plates (4) is provided with an adjustment cavity (41), and each of the adjustment cavities (41) is slidably connected with two symmetrically arranged piston plates (42), and 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 with the inner wall of the corresponding adjustment cavity (41), and each of the connecting plates (43) is provided with a plurality of equidistantly distributed installation grooves (44), and each of the installation grooves (44) is provided with an adjustment component (5).

2. The vegetable greenhouse lighting adjustment device according to claim 1 is characterized in that: 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 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).

3. The vegetable greenhouse lighting adjustment device according to claim 2 is characterized in that: 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 horizontal to vertical.

4. The vegetable greenhouse lighting adjustment device according to claim 3 is 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 one side close to the corresponding longitudinal tie rod (13) and connected to the corresponding first chamber (45) and the third chamber (47).

5. The vegetable greenhouse lighting adjustment device according to claim 4 is characterized in that: The interior of each longitudinal tie rod (13) is arranged as a cavity, and each longitudinal tie rod (13) is interconnected with the air pump (3).

6. The vegetable greenhouse lighting adjustment device according to claim 5 is 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 evacuate and deliver air to the first chamber (45) and the third chamber (47).

7. The vegetable greenhouse lighting adjustment device according to claim 6, characterized in that: The adjusting plate (4), the piston plate (42), the moving 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 moving plate (51) and the movable plate (52) to enter the interior of the greenhouse.

8. The vegetable greenhouse lighting adjustment device according to claim 7, characterized in that: When the air pump (3) delivers 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 regulating chamber (41) approach each other, and can make the two movable plates (51) in the plurality of corresponding regulating assemblies (5) approach each other, and can make the bottoms of the two movable plates (51) contact each other.

9. The vegetable greenhouse lighting adjustment device according to claim 8, 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 cause the two piston plates (42) corresponding to the inside of the regulating chamber (41) to move away from each other, and can cause the two movable plates (51) in the plurality of corresponding regulating assemblies (5) to move away from each other, and can cause the bottom of the movable plate (51) to contact the bottom of the inner wall of the regulating chamber (41).

10. A vegetable greenhouse lighting adjustment system, used for the vegetable greenhouse lighting adjustment device according to any one of claims 1 to 9, characterized in that: It comprises a controller, 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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