Circular arch type top ventilation film multi-span greenhouse

Abstract

The utility model discloses a circular arch type top ventilation film multi-span greenhouse in the technical field of multi-span greenhouses, which comprises a plurality of greenhouse bodies, each greenhouse body comprises a rectangular first girth and a rectangular second girth, a plurality of cross beams are arranged on the first girth, and the two ends of the cross beams and the bottom of the first girth are fixedly connected with main upright posts; the top of the first girth is fixedly connected with a plurality of main arch pipes and auxiliary arch pipes; the second girders are arranged below the first girders, and the main arch pipes are covered with thin films; the greenhouse body is provided with a top ventilation assembly, the top ventilation assembly comprises a plurality of arc-shaped ventilation windows, the arc-shaped ventilation windows are arranged on the thin film above the main arch pipes, sealing films are arranged on the arc-shaped ventilation windows, and first insect-proof nets are arranged at the arc-shaped ventilation windows. The ventilation window is simple in structure, indoor and outdoor air circulation can be achieved through the design of the arc-shaped ventilation window on the top, and insects can be prevented from flowing into the ventilation window through the insect-proof net.

Description

Technical Field

[0001] The utility model belongs to the technical field of multi-span greenhouses, and particularly relates to a round-arch type top-ventilated film multi-span greenhouse. Background Art

[0002] With the development of agriculture, greenhouses have emerged as a kind of agricultural facilities. Modern greenhouses and modern facility horticulture industries have adopted specialized, intensive, and large-scale production, standardized and orderly market operations, and international market system operations, becoming one of the most dynamic emerging industries in the world today and a highlight of modern agriculture. The main structure of the greenhouse is required to be strong, durable, and beautiful, and the complete sets of equipment are required to be advanced, reliable, and economical and practical.

[0003] For example, the patent with the Chinese patent publication number CN205987770U discloses a round-arch multi-span reinforced greenhouse. More than 2 greenhouse sheds are connected to each other through a connecting device; a water tank is installed between the connected greenhouse sheds. The utility model has the following technical effects: first, the manufacturing cost is low compared with the land area, greatly reducing the manufacturing cost of the greenhouse; second, the internal space of the greenhouse is greatly increased, facilitating mechanized operation and improving the land utilization rate; third, the air volume of the multi-span greenhouse increases, and the fluctuation range of the indoor temperature will decrease, better controlling the greenhouse environment. Only one set of heating system needs to be equipped, and the heating cost is low, reducing energy consumption; fourth, production workers can more conveniently use equipment such as forklifts, trolleys, and monorail transports to reduce the manual labor amount; fifth, the zoning is flexible. Partition walls can be installed in the greenhouse for zoning management.

[0004] The above patent realizes the circulation of air by setting ventilation windows. However, each independent greenhouse of this patent only has one ventilation window at its end face. For a relatively large multi-span greenhouse, there is a possibility that the air circulation is not sufficient. And it directly accelerates the air circulation between indoors and outdoors by the rotation of the fan blades. Thus, while accelerating the air circulation, it will also accelerate the flow of some insects and the like into the greenhouse through the ventilation windows, thereby affecting the planting of plants in the greenhouse. Content of the Utility Model

[0005] In order to solve the problem that some insects will flow into the greenhouse through the ventilation windows, the purpose of the utility model is to provide a round-arch type top-ventilated film multi-span greenhouse. Through the design of the top arc-shaped ventilation window, the air circulation between indoors and outdoors can be realized, and the insect-proof net can prevent the inflow of insects during ventilation.

[0006] In order to achieve the above-mentioned purpose, the technical scheme of the utility model is as follows: a dome-shaped top-ventilated film multi-span greenhouse, comprising a plurality of greenhouse bodies, adjacent greenhouse bodies are fixedly connected to form a multi-span greenhouse, the greenhouse body comprises a rectangular first perimeter beam and a second perimeter beam, the first perimeter beam is provided with a plurality of cross beams, both ends of the cross beams are respectively fixedly connected to the first perimeter beam, and both ends of the cross beams and the bottom of the first perimeter beam are fixedly connected with main columns, and secondary columns are provided between adjacent main columns, and the top of the secondary columns is fixedly connected to the bottom of the first perimeter beam; the bottoms of the main columns and the secondary columns are provided with embedded components for fixing the greenhouse body;

[0007] A plurality of main arch tubes and auxiliary arch tubes are fixedly connected to the top of the first enclosure beam, a first longitudinal rod is fixedly connected to the center of the main arch tube, and both ends of the first longitudinal rod pass through the plurality of main arch tubes and auxiliary arch tubes and extend to the two end surfaces of the first enclosure beam;

[0008] The second surrounding beam is arranged below the plurality of first surrounding beams, and the four corners of the second surrounding beam are fixedly connected to the lower part of the main column, the second surrounding beam is provided with a plurality of first clamping grooves, each of the first clamping grooves is provided with a first clamping spring, the main arch tube is covered with a film, and the lower part of the film is clamped in the first clamping groove through the first clamping spring;

[0009] A top ventilation assembly is provided on the greenhouse body, and the top ventilation assembly includes a plurality of arc-shaped ventilation windows, and the arc-shaped ventilation windows are respectively arranged on the film above the main arch tube, and a closing film is provided on the arc-shaped ventilation windows. A second clamping groove corresponding to the position of the closing film is provided on the first surrounding beam, and a second clamping spring is provided in the second clamping groove. The closing film can be clamped in the clamping groove through the second clamping spring and close the arc-shaped ventilation window, and a first insect-proof net is provided at the arc-shaped ventilation window.

[0010] The principle and beneficial effect of the basic scheme are: install each component separately, and fix the auxiliary column and the main column to the embedded component to fix the greenhouse, then cover the film on the top of the greenhouse body, and clamp the film in the card slot with a clip, so that the film is fixed on the greenhouse body. Compared with the traditional steel structure glass greenhouse, the dome-shaped film greenhouse in this technical scheme is made of lightweight materials and plastic film, and the cost is significantly lower. The dome-shaped film greenhouse is made of lightweight materials as a whole, which makes it light in weight and convenient for construction and transportation. At the same time, the design of the film can have good light transmittance, which can enhance photosynthesis and increase plant growth rate and yield.

[0011] Then, when controlling the ventilation in the greenhouse, you can directly tear off the closed film with your hands and cover the curved ventilation window to reduce the air flow. Then you need to open the closed door at the same time to expose the curved ventilation window, so that the air in the greenhouse can circulate. By adjusting the air flow in the greenhouse to a certain extent, fresh air can enter the greenhouse, lowering the indoor temperature and humidity, and creating an environment more suitable for plant growth; and by opening the curved ventilation window, the indoor and outdoor gas exchange can be increased, so that the carbon dioxide concentration, oxygen concentration, etc. in the greenhouse are maintained at a suitable level, which is beneficial to the photosynthesis and respiration of plants; at the same time, it can reduce indoor humidity, prevent mold growth, and effectively prevent the occurrence and spread of diseases and pests; at the same time, because the first insect-proof net is provided at the curved ventilation window, when the curved ventilation window is unfolded for ventilation, the possibility of insects flying into the greenhouse can be avoided to a certain extent, thereby reducing the impact of insects on plants in the greenhouse.

[0012] Opening curved ventilation windows at the top can enhance ventilation effects, make indoor air fresh, and avoid the generation and spread of plant diseases and pests. At the same time, the curved ventilation windows at the top can promote air flow inside and outside the greenhouse, take away indoor hot air, and lower the temperature inside the greenhouse. When a tightly closed greenhouse is attacked by wind, it will be subject to wind pressure due to its volume and other reasons. Opening vents on the top can greatly reduce the wind pressure, thereby reducing the impact of sudden wind pressure changes on the film.

[0013] Furthermore, a plurality of auxiliary columns are fixedly connected to both end surfaces of the first enclosure beam. The auxiliary columns are located between the two main support columns, and the auxiliary columns are fixedly connected to the bottom of the cross beam.

[0014] The beneficial effects of the basic solution are: it can share the pressure on the main column to a certain extent, can reduce the problem of the main column being damaged due to being under pressure for too long to a certain extent, and can increase the overall stability of the device.

[0015] Furthermore, a plurality of second longitudinal rods are provided above the first surrounding beam, and the second longitudinal rods are symmetrically arranged on both sides of the first longitudinal rod, and the second longitudinal rods are evenly fixedly connected to the main arch tube and the auxiliary arch tube;

[0016] A plurality of reinforcing cross bars are also provided above the first encircling beam, and both ends of the reinforcing cross bars are respectively fixedly connected to the main arch tube or the auxiliary arch tube;

[0017] The tops of the main pillars at both end surfaces of the first enclosure beam are fixedly connected with oblique tie rods, which are inclined in opposite directions and are fixedly connected at the center in an "X" shape. The end of the oblique tie rod away from the main column is fixedly connected to the bottom of the main arch tube.

[0018] The beneficial effects of the basic solution are as follows: The design of the second longitudinal rod can share the pressure received by the first longitudinal rod, the main arch tube and the auxiliary arch tube, thereby increasing the stability of the main arch tube and the auxiliary arch tube; because the distance between the two sides of the main arch tube and the auxiliary arch tube is relatively long, the design of the reinforcing cross bar can increase the supporting force on both sides of the main arch tube and the auxiliary arch tube, and reduce the deformation and other conditions of the main arch tube and the auxiliary arch tube under the pressure; at the same time, the design of the diagonal tie rod can disperse part of the pressure received by the main arch tube and distribute the load to a wider area, thereby reducing the vibration and deformation of the structure. At the same time, the diagonal tie rod can also make the support structure more firm, save space and improve its overall quality.

[0019] Further, an opening is provided on one side of the greenhouse body, and a buffer room is provided at the opening. The buffer room includes an inner door and an outer door. The outer door is hinged to the greenhouse body, the inner door is a sliding door, and a second insect-proof net is fixedly connected to the inner door.

[0020] The beneficial effects of the basic solution are as follows: When people enter the greenhouse, first open the outer door, and then the staff can first adapt to a certain temperature change in the buffer room, and then push open the inner door to enter the greenhouse body; when the staff enters and exits the greenhouse body, the design of the second insect-proof net can also reduce the flow of insects and the like into the greenhouse body to a certain extent.

[0021] Further, a plurality of side ventilation components are provided along the circumferential direction of the greenhouse body. The side ventilation components are located between the first girt and the second girt. The side ventilation components include vertical ventilation windows. A third insect-proof net is provided on the vertical ventilation windows. An electric rolling film device is fixedly connected above the vertical ventilation windows. A covering film for closing the vertical ventilation windows is fixedly connected to the output shaft of the electric rolling film device. Pulling holes are symmetrically provided at the lower part of the covering film. Springs are fixedly connected to the pulling holes. The springs are located below the vertical ventilation windows and the ends of the springs away from the pulling holes are fixedly connected to the greenhouse body. Limiting clamping plates are provided on both sides of the vertical ventilation windows. Both sides of the covering film are located within the limiting clamping plates, and the positions of the limiting clamping plates and the pulling holes are arranged in a dislocation manner.

[0022] The beneficial effects of the basic solution are as follows: Start the electric rolling film device. Under the rolling of the electric rolling film device, the covering film will roll onto the output shaft of the electric rolling film device accordingly. At the same time, because both sides of the covering film are located within the limiting clamping plates, the covering film will always be rolled up in a relatively flat state. And when the covering film moves upwards, the springs at the bottom of the covering film will apply a certain pulling force to the covering film. On the one hand, this can also make the covering film be rolled up in a relatively flat state, and on the other hand, it can make the covering film stay at different heights of the vertical ventilation window and ensure a stable return in the future, thereby realizing the control of the ventilation volume at the vertical ventilation window.

[0023] Furthermore, it also includes several gutter systems. The gutter systems are arranged between adjacent greenhouse bodies, and they are all located above the columns. Both ends of the gutter systems are connected to downspouts, and the downspouts are connected to the main columns through pipe clamps.

[0024] On the upper parts of the main columns on both sides of the multi-span greenhouse, drainage troughs are provided. The drainage troughs are located at the connection of the main arch pipes and the main struts, and the drainage troughs are connected to drain pipes.

[0025] The beneficial effect of the basic solution is that due to the circular arch-shaped top design between adjacent greenhouse bodies, there are gaps at their adjacent positions. As a result, some rainwater will accumulate here. The design of the gutter system can make the rainwater accumulate in the gutter system. At the same time, the accumulated rainwater will flow to the downspout, and the rainwater will flow along the downspout to the outside under its own gravity.

[0026] At the same time, since the two sides of the multi-span greenhouse are at the beginning and end, there are no gaps formed on their side walls. Therefore, through the design of the drainage troughs, the rainwater can flow into the drainage troughs, and then the water in the drainage troughs will flow into the drain pipes, thereby realizing the discharge of rainwater.

[0027] Furthermore, the embedded part assembly includes an insertion column. The bottom of the insertion column is conical. Along its vertical direction, the insertion column is fixedly connected with several evenly arranged spiral fins. The upper part of the insertion column is fixedly connected with a flange welding body through threads, and the bottom of the main column or the auxiliary column is fixedly connected with the insertion column through the flange welding body.

[0028] The beneficial effect of the basic solution is that the bottom of the auxiliary column or the main column is fixedly welded to the top of the insertion column through a flange. The design of the spiral fins can increase the bearing capacity and anti-overturning ability of the foundation, reduce the foundation settlement and structural deformation, and improve the stability and seismic safety of the greenhouse body. At the same time, the flange welding connection method is adopted, making it have a strong shear bearing capacity.

[0029] Furthermore, the embedded part assembly includes a steel plate. Symmetrically fixed to the bottom of the steel plate are steel bars. In the middle part of the steel bars, two support bars are fixedly connected. The two support bars and the steel bars form a "well" structure. Fixed to the top of the steel plate are two fixing holes, which are respectively located above the steel bars. The bottom of the main column or the auxiliary column is fixed in the fixing holes through nuts.

[0030] The beneficial effect of the basic solution is that first, the embedded part assembly is pre-buried in the soil, and then the bottom of the auxiliary column or the main column is fixedly connected to the fixing holes at the top of the steel plate through nuts, thereby realizing the fixation of the greenhouse body to the ground. And through the design of the steel bar embedded parts, the stability and durability of the greenhouse body structure can be enhanced, enabling the greenhouse body to better resist the damage of the natural environment, such as wind, rain, snow, etc. In addition, using steel bar embedded parts for fixation can also reduce the loosening problems caused by using fasteners such as expansion bolts, and improve the service life and safety of the greenhouse body. Brief Description of the Drawings

[0031] Figure 1 This is the front view of the round-arch type top-ventilated thin-film multi-span greenhouse in the embodiment of the present utility model.

[0032] Figure 2 This is the side view of the round-arch type top-ventilated thin-film multi-span greenhouse in the embodiment of the present utility model.

[0033] Figure 3 is Figure 1 the top view of the top-ventilation component in

[0034] Figure 4 is Figure 1 the front view of the side-ventilation component in

[0035] Figure 5 This is the side view of the embedded part component of the round-arch type top-ventilated thin-film multi-span greenhouse in the embodiment of the present utility model.

[0036] Figure 6 This is the side view of the embedded part component of the round-arch type top-ventilated thin-film multi-span greenhouse in the embodiment of the present utility model. Detailed Description of the Embodiment

[0037] The following is a further detailed description through specific embodiments:

[0038] The reference numerals in the drawings of the specification include: the first girt 1, the second girt 2, the main column 3, the drain trough 4, the side-ventilation component 5, the thin film 6, the reinforcement cross bar 7, the secondary column 8, the top-ventilation component 9, the arc ventilation window 901, the sealing film 902, the second card slot 903, the second longitudinal bar 10, the first longitudinal bar 11, the diagonal tension rod 12, the downspout 13, the outer door 14, the inner door 15, the main arch tube 16, the gutter 17, the electric rolling film device 18, the covering film 19, the limit clamping plate 20, the pulling hole 21, the spring 22, the steel plate 23, the steel bar 24, the flange welded body 25, the insertion column 26, the spiral fin 27, the support rib 29, the first card slot 30.

[0039] Embodiment 1

[0040] Basically as shown in the attached Figures 1 - 6As shown: a dome-shaped top ventilated film multi-span greenhouse, comprising a plurality of greenhouse bodies, adjacent greenhouse bodies are fixedly connected by bolts to form a multi-span greenhouse, the greenhouse body comprises a rectangular first perimeter beam 1 and a second perimeter beam 2, wherein the first perimeter beam 1 and the second perimeter beam 2 are connected by 50mm×30mm×1.5mm hot-dip galvanized square tubes, galvanized for corrosion protection, a plurality of cross beams are arranged on the first perimeter beam 1, the two ends of the cross beams are respectively fixedly connected to the first perimeter beam 1 by bolts, and the two ends of the cross beams and the bottom of the first perimeter beam 1 are fixedly connected by bolts. They are all fixedly connected with main columns 3 by bolts. The main columns 3 are made of 70mm×50mm×2.5mm hot-dip galvanized square tubes, which are galvanized for corrosion protection. Auxiliary columns are arranged between adjacent main columns 3. The auxiliary columns 8 are made of 50mm×50mm×2.0mm hot-dip galvanized square tubes, which are galvanized for corrosion protection. The top of the auxiliary column is fixedly connected with the bottom of the first surrounding beam 1 by bolts; the bottoms of the main columns 3 and the auxiliary columns 8 are provided with embedded components for fixing the greenhouse body; one auxiliary column 8 on the side of the greenhouse body is arranged for every 4m interval.

[0041] A plurality of main arch tubes 16 and auxiliary arch tubes are fixedly connected to the top of the first surrounding beam 1, wherein the main arch tube 16 is installed every 4m along the length direction of the greenhouse body, and the auxiliary arch tube is installed every 1m along the length direction of the greenhouse body. Hot-dip galvanized round tube, the center of the main arch tube 16 is fixedly connected with the first longitudinal rod 11 by bolts, both ends of the first longitudinal rod 11 pass through a plurality of main arch tubes 16 and auxiliary arch tubes and extend to the two end surfaces of the first surrounding beam 1; the first longitudinal rod 11 adopts Hot dip galvanized round tube.

[0042] The second surrounding beam 2 is arranged below a number of first surrounding beams 1, and the four corners of the second surrounding beam 2 are fixedly connected to the lower part of the main column 3 by bolts. A number of first clamping grooves 30 are fixedly connected to the second surrounding beam 2 by bolts, and a first clamping spring is provided in each of the first clamping grooves 30. The main arch tube 16 is covered with a film 6, and the lower part of the film 6 is clamped in the first clamping groove 30 by a first clamping spring; the film 6 all uses the national standard GB / T 10003-2008 drip-free PO film, which requires good toughness, light transmittance of not less than 85%, drip-proof and heat-insulating, and anti-aging; the thickness is 0.10mm~0.15mm.

[0043] The greenhouse body is provided with a top ventilation assembly 9. The top ventilation assembly 9 includes a number of arc-shaped ventilation windows 901. The window width of the arc-shaped ventilation window 901 is 2 m, and the lower skirt film is 15 cm. The arc-shaped ventilation windows 901 are respectively arranged on the film 6 above the main arch tube 16. A sealing film 902 is provided on each arc-shaped ventilation window 901. A number of second card slots 903 corresponding to the position of the sealing film 902 are fixedly connected to the first girt 1 by bolts. Second retaining springs are provided in each of the second card slots 903. The sealing film 902 can be clamped in the card slot by the second retaining spring to close the arc-shaped ventilation window 901. A first insect-proof net is provided at the arc-shaped ventilation window 901. The first insect-proof net is a 20-40 mesh white nylon insect-proof net. The arc-shaped ventilation window 901 is formed by enclosing with hot-dip galvanized round tubes. Both the first card slot 30 and the second card slot 903 are made of hot-dip galvanized card slots or aluminum alloy card slots, with a thickness of 0.8 mm - 1.0 mm.

[0044] The specific implementation process is as follows: Install each component separately, and fix the secondary column 8 and the main column 3 to the embedded part assembly to fix the greenhouse. Then cover the film 6 on the top of the greenhouse body, and use the retaining spring to clamp the film 6 in the card slot, thereby fixing the film 6 on the greenhouse body. Compared with the traditional steel structure glass greenhouse, the circular arch film 6 greenhouse in this technical solution is made of light materials and plastic film 6, with significantly lower cost. Moreover, the circular arch film 6 greenhouse is entirely made of light materials, making its own weight light and facilitating construction and transportation. At the same time, the design of the film 6 has good light transmittance, which can enhance photosynthesis, improve the plant growth rate and yield.

[0045] Then, when ventilating the greenhouse, you can directly hold the sealing film 902 by hand and tear it off to block the arc-shaped ventilation window 901, which can reduce the air flow. Then, the closing door needs to be opened at the same time to expose the arc-shaped ventilation window 901, so that the air in the greenhouse can circulate. Thus, by adjusting the air flow in the greenhouse to a certain extent, fresh air can enter the greenhouse, reducing the indoor temperature and humidity, and creating a more suitable environment for plant growth. And by opening the arc-shaped ventilation window 901, the gas exchange between the inside and outside of the greenhouse can be increased, keeping the carbon dioxide concentration, oxygen concentration, etc. in the greenhouse body at an appropriate level, which is beneficial to the photosynthesis and respiration of plants. At the same time, it can reduce indoor humidity, prevent the growth of mildew, and effectively prevent the occurrence and spread of pests and diseases. At the same time, because a first insect-proof net is provided at the arc-shaped ventilation window 901, when the arc-shaped ventilation window 901 is unfolded for ventilation, the possibility of insects flying into the greenhouse body can be avoided to a certain extent, thereby reducing the impact of insects and the like on the plants in the greenhouse body.

[0046] An arc-shaped ventilation window 901 is opened at the top, which can enhance the ventilation effect, keep the indoor air fresh, and avoid the generation and spread of plant diseases and pests. At the same time, opening the arc-shaped ventilation window 901 at the top can promote the air flow inside and outside the greenhouse, take away the hot air inside the greenhouse, and reduce the temperature inside the greenhouse. When a closed greenhouse is attacked by wind, due to its volume and other reasons, it will be affected by wind pressure. Opening a ventilation opening at the top can greatly reduce the wind pressure, thereby reducing the impact of sudden wind pressure changes on the film 6.

[0047] Embodiment 2

[0048] The difference from the above embodiment is that a number of auxiliary columns 8 are fixedly connected to both end faces of the first girt 1 by bolts. The auxiliary columns 8 are located between the two main columns, and the auxiliary columns 8 are fixedly connected to the bottom of the cross beam by bolts. For the auxiliary columns 8 on the end faces, 3 auxiliary columns 8 are provided for every 8m span, and hot-dip galvanized square pipes with a size of 50mm×50mm×2.0mm are used for galvanized anti-corrosion.

[0049] The specific implementation process is as follows: The design of the auxiliary columns 8 can, to a certain extent, share the pressure received by the main columns 3, reduce the problem that the main columns 3 are damaged due to long-term compression to a certain extent, and increase the overall stability of the device.

[0050] Embodiment 3

[0051] The difference from the above embodiment is that a number of second longitudinal bars 10 are also provided above the first girt 1. The second longitudinal bars 10 are symmetrically arranged on both sides of the first longitudinal bar 11 respectively, and the second longitudinal bars 10 are fixedly connected to the main arch tube 16 and the auxiliary arch tube by bolts;

[0052] A number of reinforcing cross bars 7 are also provided above the first girt 1. Both ends of the reinforcing cross bars 7 are fixedly connected to the main arch tube 16 or the auxiliary arch tube by bolts;

[0053] Diagonal tension bars 12 are fixedly connected to the tops of the main columns located at both end faces of the first girt 1. The diagonal tension bars 12 are inclined in opposite directions and are fixedly connected at the center to form an "X" shape. One end of the diagonal tension bar 12 away from the main column 3 is fixedly connected to the bottom of the main arch tube 16 by bolts.

[0054] The specific implementation process is as follows: The design of the second longitudinal rod 10 can share the pressure received by the first longitudinal rod 11, the main arch tube 16 and the auxiliary arch tube, thereby increasing the stability of the main arch tube 16 and the auxiliary arch tube; because the distances on both sides of the main arch tube 16 and the auxiliary arch tube are relatively long, the design of the reinforcement cross bar 7 can increase the supporting force on both sides of the main arch tube 16 and the auxiliary arch tube, and reduce the deformation and other conditions of the main arch tube 16 and the auxiliary arch tube under the pressure; at the same time, the design of the diagonal tension rod 12 can disperse part of the pressure received by the main arch tube 16 and distribute the load to a wider area, thereby reducing the vibration and deformation of the structure. At the same time, the diagonal tension rod 12 can also make the support structure more firm, save space and improve its overall quality.

[0055] Example 4

[0056] The difference from the above embodiment is that an opening is provided on one side of the greenhouse body, and a buffer room is provided at the opening. The buffer room includes an inner door 15 and an outer door 14. The outer door 14 is hinged to the greenhouse body. The inner door 15 is a sliding door, and a second insect-proof net is fixedly connected to the inner door 15 by bolts. The buffer room has a horizontal width of 4m, a depth of 2m, a height of 3m on the side close to the greenhouse body, a height of 2.5m on the outside, and the width of the outer door 14 of the buffer room is greater than 2m.

[0057] The specific implementation process is as follows: When people enter the greenhouse, first open the outer door 14, and then the staff can first adapt to a certain temperature change in the buffer room, and then push open the inner door 15 to enter the greenhouse body; when the staff enters and exits the greenhouse body, the design of the second insect-proof net can also reduce the flow of insects and the like into the greenhouse body to a certain extent.

[0058] Example 5

[0059] The difference from the above embodiment is that as Figure 4 shown, a plurality of side ventilation components 5 are provided along the circumferential direction of the greenhouse body. The side ventilation components 5 are located between the first girders 1 and the second girders 2. The side ventilation components 5 include vertical ventilation windows. A third insect-proof net is provided on the vertical ventilation windows. An electric rolling film device 18 is fixedly connected above the vertical ventilation windows by bolts. A covering film 19 for closing the vertical ventilation windows is fixedly connected to the output shaft of the electric rolling film device 18 by bolts. Pulling holes 21 are symmetrically opened at the lower part of the covering film 19. Springs 22 are hot-melt welded on the pulling holes 21. The springs 22 are located below the vertical ventilation windows and the ends of the springs 22 far from the pulling holes 21 are fixedly connected to the greenhouse body by bolts. And limiting clamping plates 20 are provided on both sides of the vertical ventilation windows. Both sides of the covering film 19 are located within the limiting clamping plates 20, and the positions of the limiting clamping plates 20 and the pulling holes 21 are arranged in a staggered manner. In this embodiment, the model of the electric rolling film device 18 is selected as: GMD40-S. The number of ventilation windows is adjusted according to the height of the main columns 3. One layer of ventilation windows is provided when the height of the main columns 3 is 3m to 4m, and two layers of ventilation windows are provided when the height of the main columns 3 is more than 4m.

[0060] The specific implementation process is as follows: When increasing the ventilation rate of the greenhouse body, the electric rolling film device 18 can be started. During the operation of the electric rolling film device 18, the covering film 19 will roll along with it onto the output shaft of the electric rolling film device 18. At the same time, since both sides of the covering film 19 are located within the limit clamping plates 20, the covering film 19 will always be rolled up in a relatively flat state. And when the covering film 19 moves upward, the spring 22 at the bottom of the covering film 19 will exert a certain pulling force on the covering film 19. Thus, on the one hand, the covering film 19 can be rolled up in a relatively flat state, and on the other hand, the covering film 19 can stay at different heights of the vertical ventilation window and ensure stable subsequent return, thereby realizing the control of the ventilation volume at the vertical ventilation window.

[0061] Example 6

[0062] The difference from the above embodiment is that it further includes a number of gutters 17. The gutters 17 are cold-formed from hot-dip galvanized steel plates 23 with a thickness of 1.8 mm and a width of 50 cm. The gutters 17 are arranged between adjacent greenhouse bodies, and the gutters 17 are all located above the columns. Both ends of the gutters 17 are connected to downspouts 13, and the downspouts 13 are connected to the main column 3 through clamps;

[0063] On the upper parts of the main columns 3 on both sides of the multi-span greenhouse, drainage troughs 4 are fixedly connected by bolts. The drainage troughs 4 are located at the connection between the main arch pipes 16 and the main struts, and the drainage troughs 4 are connected to drain pipes.

[0064] The specific implementation process is as follows: Due to the circular arched top design between adjacent greenhouse bodies, there are gaps at their adjacent parts. Therefore, some rainwater will accumulate here. The design of the gutter 17 can make the rainwater accumulate in the gutter 17. At the same time, the accumulated rainwater will flow to the downspout 13, and the rainwater will flow to the outside along the downspout 13 under its own gravity;

[0065] At the same time, since the two sides of the multi-span greenhouse are at the beginning and end, there are no gaps formed on their side walls. Therefore, through the design of the drainage trough 4, the rainwater can flow into the drainage trough 4, and then the water in the drainage trough 4 will flow into the drain pipe, thereby realizing the discharge of rainwater.

[0066] Example 7

[0067] The difference from the above embodiment is that, as Figure 6 shown, the embedded part assembly includes an insertion column 26. The outer diameter of the insertion column 26 is not less than 75 mm, the thickness is not less than 3.75 mm, and the length is 1.2 m - 1.5 m. The bottom of the insertion column 26 is conical. Along its vertical direction, the insertion column 26 is fixedly connected with a number of uniformly arranged spiral fins 27 by bolts. The upper part of the insertion column 26 is fixedly connected with a flange welding body 25 by threads. The bottom of the main column 3 or the secondary column 8 is fixedly connected with the insertion column 26 through the flange welding body 25.

[0068] The specific implementation process is as follows: When fixing the greenhouse body, the bottom of the auxiliary column 8 or the main column 3 is fixedly welded to the top of the inserted column 26 through a flange. The design of the spiral fin can increase the bearing capacity and anti-overturning ability of the foundation, reduce the foundation settlement and structural deformation, and improve the stability and seismic safety of the greenhouse body. At the same time, the flange welding method is used for connection, so that it has a strong shear bearing capacity.

[0069] Example 8

[0070] The difference from the above embodiment is that, as Figure 5 shown, the embedded part assembly includes a steel plate 23. Symmetrically at the bottom of the steel plate 23, steel bars 24 are fixedly connected through bolts. The steel bars are long and 100 mm of the upper part is exposed above the ground to connect the steel plate 23, and the lower part is bent into an arc of 50 mm. In the middle part of the steel bar 24, two support bars 29 are fixedly connected through bolts. The two support bars 29 and the steel bar 24 form a "well" structure. Two fixing holes are opened at the top of the steel plate 23, and the fixing holes are respectively located above the steel bars 24. The bottom of the main column 3 or the auxiliary column 8 is fixed in the fixing holes through nuts.

[0071] The specific implementation process is as follows: When fixing the greenhouse body on the ground, first, the embedded part assembly is pre-buried in the soil, and then the bottom of the auxiliary column 8 or the main column 3 is fixedly connected to the fixing holes at the top of the steel plate 23 through nuts, so that the greenhouse body can be fixed on the ground. And through the design of the steel bar 24 embedded part, the stability and durability of the greenhouse body structure can be enhanced, so that the greenhouse body can better resist the damage of the natural environment, such as wind, rain, snow, etc. In addition, using the steel bar 24 embedded part for fixing can also reduce the loosening problem caused by using fasteners such as expansion bolts, and improve the service life and safety of the greenhouse body.

[0072] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprises", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such process, method, article or device.

[0073] The above are only the embodiments of the present utility model. Specific structures and common knowledge such as characteristics that are well-known in the art are not described in detail herein. Those of ordinary skill in the art know all the common general technical knowledge in the technical field to which the utility model belongs before the application date or the priority date, are able to know all the existing technologies in this field, and have the ability to apply the conventional experimental means before this date. Those of ordinary skill in the art can, under the inspiration given by this application, combine their own abilities to complete and implement this solution. Some typical well-known structures or well-known methods should not become obstacles for those of ordinary skill in the art to implement this application. It should be noted that for those skilled in the art, without departing from the structure of the present utility model, several deformations and improvements can still be made, and these should also be regarded as the protection scope of the present utility model, and these will not affect the implementation effect of the present utility model and the practicality of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners and the like recorded in the specification can be used to interpret the content of the claims.

Claims

1. A dome-shaped top-ventilated film multi-span greenhouse, characterized by: The greenhouse comprises a plurality of greenhouse bodies, adjacent greenhouse bodies are fixedly connected to form a multi-span greenhouse, the greenhouse body comprises a rectangular first perimeter beam and a second perimeter beam, the first perimeter beam is provided with a plurality of cross beams, both ends of the cross beams are respectively fixedly connected to the first perimeter beam, and both ends of the cross beams and the bottom of the first perimeter beam are fixedly connected to main columns, and secondary columns are provided between adjacent main columns, and the top of the secondary columns is fixedly connected to the bottom of the first perimeter beam; the bottoms of the main columns and the secondary columns are provided with embedded components for fixing the greenhouse body; A plurality of main arch tubes and auxiliary arch tubes are fixedly connected to the top of the first enclosure beam, a first longitudinal rod is fixedly connected to the center of the main arch tube, and both ends of the first longitudinal rod pass through the plurality of main arch tubes and auxiliary arch tubes and extend to the two end surfaces of the first enclosure beam; The second surrounding beam is arranged below the plurality of first surrounding beams, and the four corners of the second surrounding beam are fixedly connected to the lower part of the main column, the second surrounding beam is provided with a plurality of first clamping grooves, each of the first clamping grooves is provided with a first clamping spring, the main arch tube is covered with a film, and the lower part of the film is clamped in the first clamping groove through the first clamping spring; A top ventilation assembly is provided on the greenhouse body, and the top ventilation assembly includes a plurality of arc-shaped ventilation windows, and the arc-shaped ventilation windows are respectively arranged on the film above the main arch tube, and a closing film is provided on the arc-shaped ventilation windows. A second clamping groove corresponding to the position of the closing film is provided on the first surrounding beam, and a second clamping spring is provided in the second clamping groove. The closing film can be clamped in the clamping groove through the second clamping spring and close the arc-shaped ventilation window, and a first insect-proof net is provided at the arc-shaped ventilation window.

2. The dome-shaped top-ventilated film multi-span greenhouse according to claim 1, characterized in that: A plurality of auxiliary columns are fixedly connected to both end surfaces of the first surrounding beam. The auxiliary columns are located between the two main support columns and are fixedly connected to the bottom of the cross beam.

3. The dome-shaped top-ventilated film multi-span greenhouse according to claim 2, characterized in that: A plurality of second longitudinal rods are also provided above the first surrounding beam, and the second longitudinal rods are symmetrically arranged on both sides of the first longitudinal rod, and the second longitudinal rods are evenly fixedly connected to the main arch tube and the auxiliary arch tube; A plurality of reinforcing cross bars are also provided above the first encircling beam, and both ends of the reinforcing cross bars are respectively fixedly connected to the main arch tube or the auxiliary arch tube; The tops of the main pillars located at both end surfaces of the first enclosure beam are fixedly connected with oblique tie rods, which are inclined in opposite directions and are fixedly connected at the center in an "X" shape, and the end of the oblique tie rod away from the main column is fixedly connected to the bottom of the main arch tube.

4. The dome-shaped top-ventilated film multi-span greenhouse according to claim 3, characterized in that: An opening is provided on one side of the greenhouse body, and a buffer room is provided at the opening. The buffer room includes an inner door and an outer door. The outer door is hinged to the greenhouse body, and the inner door is a sliding door. A second insect-proof net is fixedly connected to the inner door.

5. The dome-shaped top-ventilated film multi-span greenhouse according to claim 4, characterized in that: The greenhouse body is provided with a plurality of side ventilation assemblies along its circumference, and the side ventilation assemblies are located between the first surrounding beam and the second surrounding beam. The side ventilation assemblies include vertical ventilation windows, and the vertical ventilation windows are provided with a third insect-proof net. An electric film roller is fixedly connected above the vertical ventilation windows, and a covering film for closing the vertical ventilation windows is fixedly connected to the output shaft of the electric film roller. Pulling holes are symmetrically provided at the lower part of the covering film, and springs are fixedly connected to the pulling holes. The springs are located below the vertical ventilation windows, and one end of the spring away from the pulling holes is fixedly connected to the greenhouse body. Limiting clamps are provided on both sides of the vertical ventilation windows, and both sides of the covering film are located in the limiting clamps, and the positions of the limiting clamps and the pulling holes are staggered.

6. The dome-shaped top-ventilated film multi-span greenhouse according to claim 5, characterized in that: It also includes a plurality of gutters, which are arranged between adjacent greenhouse bodies, are located on the upper part of the columns, and both ends of the gutters are connected with downpipes, which are connected to the main columns through clamps; Drainage grooves are provided on the upper parts of the main columns on both sides of the multi-span greenhouse. The drainage grooves are located at the connection between the main arch pipe and the main support column, and the drainage grooves are connected to the drainage pipes.

7. The dome-shaped top-ventilated film multi-span greenhouse according to claim 6, characterized in that: The embedded part assembly includes an inserted column, the bottom of which is conical, and the inserted column is vertically fixedly connected with a plurality of evenly arranged spiral fins, the upper part of the inserted column is threadedly fixedly connected with a flange welding body, and the bottom of the main column or the auxiliary column is fixedly connected to the inserted column through a flange welding body.

8. The dome-shaped top-ventilated film multi-span greenhouse according to claim 6, characterized in that: The embedded parts assembly includes a steel plate, the bottom of the steel plate is symmetrically fixedly connected with steel bars, the middle part of the steel bars is fixedly connected with two supporting bars, the two supporting bars and the steel bars form a "well" structure, the top of the steel plate is fixedly connected with two fixing holes, the fixing holes are respectively located above the steel bars, and the bottom of the main column or the auxiliary column is fixed in the fixing holes by nuts.

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