Greenhouse ventilation duct and track integrated device, ventilation system and greenhouse

Abstract

The present invention provides a greenhouse ventilation duct and track integrated device, a ventilation system and a greenhouse, wherein the greenhouse ventilation duct and track integrated device comprises a track body, an air duct and an air outlet; the air duct extends along the length direction of the track body, the air duct is constructed in the track body or on the first surface of the track body, and the first surface is used to fit the ground; the air outlet is constructed in the track body, one end of the air outlet is connected to the cavity where the air duct is located, and the other end is formed on the outer side of the track body. The present invention can provide ventilation channels for positive pressure ventilation, cooling, dehumidification, hot air heating for air circulation, CO2 supplementation, ozone disinfection, etc. of the greenhouse, and can also provide track paths for greenhouse special vehicles such as picking and transport vehicles and various robots, which can greatly reduce the number of components in the greenhouse, improve the cleanliness of the greenhouse cultivation surface, improve the operating space of the greenhouse, and help improve the efficiency of greenhouse production operations and effectively reduce the construction cost of the greenhouse.

Description

Technical Field

[0001] The present invention relates to the technical field of greenhouses, and in particular to a greenhouse ventilation duct and track integrated device, a ventilation system and a greenhouse. Background Art

[0002] Traditional multi-span greenhouses usually use negative pressure ventilation for indoor ventilation, cooling and dehumidification. Compared with negative pressure ventilation, positive pressure ventilation of greenhouses has many advantages. It can realize uniform and accurate air supply to the room through ventilation ducts, which expands the effective ventilation distance. At the same time, positive pressure ventilation can realize the ventilation airflow direction from bottom to top, has a high replacement efficiency for indoor air, and can centrally filter and disinfect the air entering the greenhouse, so that the room is in a positive pressure state in real time, which can effectively prevent external insect sources, bacteria and dust from entering the greenhouse, thereby effectively reducing the incidence of pests and diseases and the use of pesticides, and helping the greenhouse to achieve clean production. It should be pointed out in particular that under positive pressure ventilation conditions, the internal and external circulation of greenhouse air can be switched on demand, and the heating, cooling, humidification, dehumidification, air filtration, CO2 supplementation and ozone disinfection of the greenhouse can be realized simultaneously through a set of ventilation ducts, with highly integrated functions.

[0003] In recent years, as positive pressure ventilation has been gradually applied to the production practice of multi-span greenhouses, higher requirements have been put forward for the optimization design of ventilation ducts. In existing greenhouses, ventilation ducts are mostly hanging ducts or underground ducts. Hanging ducts are generally installed under the cultivation troughs. They are not only densely arranged and easy to damage, but also particularly scattered when not ventilated. When hung high in the greenhouse, they will also block the light of crops, which is not conducive to crop growth. Underground ducts require grooving, backfilling and compaction on the ground. The construction workload is large, and the strength, waterproofing and rust prevention of the ducts are required to be high.

[0004] At the same time, in order to adapt to greenhouse production operations, a large number of open tracks are arranged in the greenhouse to guide greenhouse-specific vehicles such as picking and transport vehicles and various robots to move along the planned paths and complete the corresponding production operations. The coexistence of ventilation ducts and open tracks in the greenhouse directly leads to crowded and messy cultivation space in the existing greenhouse, which is not conducive to efficient management of greenhouse production operations and is not conducive to reducing greenhouse construction costs. Summary of the invention

[0005] The present invention provides a greenhouse ventilation duct and track integrated device, a ventilation system and a greenhouse, which are used to solve the problem that the ventilation duct and the traffic track in the existing greenhouse are arranged together, resulting in crowded and messy cultivation space in the greenhouse, which is not conducive to greenhouse production management.

[0006] The present invention provides a greenhouse ventilation duct and track integrated device, comprising: a track body, an air duct and an air outlet; the air duct extends along the length direction of the track body, the air duct is constructed in the track body or on the first surface of the track body, and the first surface is used to fit with the ground; the air outlet is constructed in the track body, one end of the air outlet is connected to the cavity where the air duct is located, and the other end is formed on the outer side surface of the track body.

[0007] According to a greenhouse ventilation duct and track integration device provided by the present invention, the track body includes a first area, a second area and a third area; the first area, the second area and the third area are arranged in sequence along the width direction of the track body; the air duct is constructed in the second area, and the first area and the third area are used to provide support for the wheels running on the track body.

[0008] According to a greenhouse ventilation duct and track integration device provided by the present invention, the air outlet holes are arranged axially along the width direction of the track body; and / or the air outlet holes are arranged in the first area and the third area; the track body has a first side surface and a second side surface which are arranged opposite to each other along its width direction, and the other end of the air outlet holes is formed on the first side surface or the second side surface; the air outlet holes located in the first area and the third area are arranged in an alternating manner along the length direction of the track body.

[0009] According to a greenhouse ventilation duct and track integration device provided by the present invention, when the air duct is constructed on the first surface of the track body, the first surface is constructed with an anchor, and the anchor is used to anchor in the ground.

[0010] According to a greenhouse ventilation duct and track integration device provided by the present invention, a first guide rail and a second guide rail are provided on the second surface of the track body that is away from the first surface. The first guide rail and the second guide rail extend along the length direction of the track body, and the first guide rail and the second guide rail are arranged at both ends of the width direction of the track body.

[0011] According to a greenhouse ventilation duct and track integration device provided by the present invention, a first rib and a second rib are provided on the second surface of the track body which is away from the first surface, the first rib and the second rib extend along the length direction of the track body, and the first rib and the second rib are arranged at both ends of the track body in the width direction.

[0012] According to a greenhouse ventilation duct and track integration device provided by the present invention, a plurality of track bodies are provided, the plurality of track bodies are spaced apart from each other and arranged in parallel, two adjacent track bodies are connected by a supporting device, and the supporting device is used to place a cultivation trough.

[0013] The present invention also provides a ventilation system, including a blower, a main air duct and the greenhouse ventilation duct and track integration device as described above, wherein the air outlet of the blower is connected to one end of the main air duct, and the main air duct is connected to the air duct in the track body.

[0014] According to a ventilation system provided by the present invention, the track body and the main air duct are both used to be laid on the ground, and the upper surface of the main air duct facing away from the ground is flush with the second surface of the track body; and / or, multiple track bodies are used to be arranged along the north-south direction, and each of the track bodies is composed of multiple splicing units; multiple main air ducts are used to be arranged along the east-west direction.

[0015] The present invention also provides a greenhouse, in which the greenhouse ventilation duct and track integrated device as described above, or the ventilation system as described above is arranged.

[0016] The present invention provides a greenhouse ventilation duct and track integrated device, ventilation system and greenhouse. By arranging an integrated device integrating ventilation and track functions in the greenhouse, it can not only provide ventilation channels for positive pressure ventilation, cooling, dehumidification, hot air heating for air circulation, CO2 replenishment, ozone disinfection, etc. in the greenhouse, but also provide track paths for greenhouse special vehicles such as picking and transport vehicles and various robots. It can greatly reduce the number of components in the greenhouse, improve the cleanliness of the greenhouse cultivation surface, improve the greenhouse operation space, which is beneficial to improving the production efficiency of the greenhouse and effectively reduce the construction cost of the greenhouse.

[0017] At the same time, compared with the existing hanging air ducts, the integrated device shown in the present invention has a simpler, neater, more beautiful structure, is not easy to damage, and has stable operation; compared with the existing buried air ducts, the integrated device shown in the present invention is easier to lay out in the greenhouse and has lower requirements on construction technology; compared with the existing hot-dip galvanized pipe tracks in the greenhouse, the integrated device shown in the present invention not only takes into account the ventilation function, but is also easy to install and maintain, can be customized and prefabricated according to needs, and is suitable for ordinary rubber-wheeled picking and transport vehicles and rail-wheeled picking and transport vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is one of the transverse cross-sectional schematic diagrams of a greenhouse ventilation duct and track integration device provided by the present invention;

[0020] Figure 2 This is the second transverse cross-sectional schematic diagram of a greenhouse ventilation duct and track integrated device provided by the present invention;

[0021] Figure 3 This is the third transverse cross-sectional schematic diagram of a greenhouse ventilation duct and track integrated device provided by the present invention;

[0022] Figure 4 This is a fourth transverse cross-sectional schematic diagram of a greenhouse ventilation duct and track integrated device provided by the present invention;

[0023] Figure 5 It is a structural schematic diagram of a ventilation system arranged in a greenhouse provided by the present invention;

[0024] Reference numerals:

[0025] 1: integrated device; 2: blower; 3: main air duct;

[0026] 11: Track body; 12: Air duct; 13: Air outlet;

[0027] 101: first area; 102: second area; 103: third area;

[0028] 110: first rib; 111: second rib; 112: first guide rail;

[0029] 113: second guide rail; 114: anchoring member; 115: supporting device;

[0030] 4: Greenhouse house. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are 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.

[0032] Combine the following Figure 1-Figure 5 The invention describes a greenhouse ventilation duct and track integrated device, a ventilation system and a greenhouse.

[0033] like Figures 1 to 4 As shown, this embodiment provides a greenhouse ventilation duct and track integrated device (integrated device 1 for short), the integrated device 1 includes a track body 11, an air duct 12 and an air outlet 13; the air duct 12 extends along the length direction of the track body 11, the air duct 12 is constructed in the track body 11 or constructed on the first surface of the track body 11, and the first surface is used to fit the ground; the air outlet 13 is constructed in the track body 11, one end of the air outlet 13 is connected to the cavity where the air duct 12 is located, and the other end is formed on the outer side of the track body 11. Among them, the second surface of the track body 11 away from the first surface is used for the wheels of the greenhouse picking and transport vehicle to travel. When the integrated device 1 is laid out in the greenhouse, a row of integrated devices 1 is set between every two adjacent rows of cultivation rows.

[0034] Specifically, this embodiment sets an integrated device 1 integrating ventilation and track functions in the greenhouse, which can provide ventilation channels for positive pressure ventilation, cooling, dehumidification, hot air heating, CO2 replenishment, ozone disinfection, etc. in the greenhouse, and can also provide track paths for greenhouse special vehicles such as picking and transport vehicles and various robots. It can greatly reduce the number of components in the greenhouse, improve the cleanliness of the greenhouse cultivation surface, improve the greenhouse operating space, which is conducive to improving the efficiency of greenhouse production operations and effectively reducing the construction cost of the greenhouse.

[0035] It should be pointed out here that in order to ensure the mechanical strength of the integrated device 1, the track body 11 shown in this embodiment is preferably a cast prefabricated part made of reinforced concrete or fiberglass.

[0036] The cross section of the air duct 12 shown in this embodiment can be made into a rectangular shape. When the track body 11 is laid on the ground, the height of the air duct 12 can be set to 100 mm, and the width of the air duct 12 can be adaptively selected according to the ventilation volume requirements and the type of vehicles traveling on the track body 11.

[0037] like Figures 1 to 3As shown, in order to provide reliable support capabilities for vehicles traveling on the track body 11 on the basis of normal ventilation functions, the track body 11 shown in this embodiment can be specifically configured as a first area 101, a second area 102 and a third area 103; the first area 101, the second area 102 and the third area 103 are arranged in sequence along the width direction of the track body 11; the air duct 12 is constructed in the second area 102, and the first area 101 and the third area 103 can be solidly cast with reinforced concrete or fiberglass to provide support for the wheels traveling on the track body 11, so as to avoid the second area 102 where the air duct 12 is located from directly bearing the weight of the wheels.

[0038] like Figures 1 to 3 As shown, since the cultivation troughs in the greenhouse are usually arranged in multiple rows and side by side, in order to adjust the temperature, humidity and CO2 supply of the cultivated plants, the air outlet holes 13 in this embodiment can be arranged axially along the width direction of the track body 11.

[0039] At the same time, in order to prevent the air outlet holes 13 from affecting the overall mechanical strength of the track body 11, the air outlet holes 13 can be arranged in the first area 101 and the third area 103 in this embodiment; the track body 11 has a first side surface and a second side surface that are arranged oppositely in the width direction, and the other end of the air outlet holes 13 is formed on the first side surface or the second side surface; the air outlet holes 13 located in the first area 101 and the third area 103 are arranged in a staggered manner along the length direction of the track body 11. In this embodiment, the center spacing between two adjacent air outlet holes 13 located in the first area 101 or the third area 103 is 800-1000mm, so that the center spacing between two adjacent air outlet holes 13 arranged in a staggered manner along the length direction of the track body 11 can be set to 400-500mm accordingly.

[0040] Furthermore, in this embodiment, the air outlet hole 13 can be specifically set as a circular hole, and the central axis of the air outlet hole 13 is on the same horizontal plane as the center of the air duct 12 in the height direction. The diameter of the air outlet hole 13 can be specifically set to 50 mm.

[0041] like Figure 1 As shown, in the first embodiment, the integrated device 1 shown in this embodiment can provide path guidance for a picking and transporting vehicle with rubber wheels in a greenhouse. The second surface of the track body 11 shown in this embodiment, which is away from the first surface, is provided with a first side rib 110 and a second side rib 111. The first side rib 110 and the second side rib 111 extend along the length direction of the track body 11. The first side rib 110 and the second side rib 111 are respectively arranged at both ends of the width direction of the track body 11. Among them, the first side rib 110 and the second side rib 111 can be set higher than the second surface of the track body 11 by 100 mm, and the thickness of the first side rib 110 and the second side rib 111 can be set to 50 mm.

[0042] Here, by setting the first guard side 110 and the second guard side 111 on the track body 11, path guidance and constraints can be provided for the walking of the picking and transporting vehicle, which can effectively prevent the picking and transporting vehicle from tipping over and detaching from the track body 11 during driving.

[0043] like Figure 2 As shown, in the second embodiment, the integrated device 1 shown in this embodiment can provide path guidance for a picking and transporting vehicle with rail wheels in a greenhouse. The second surface of the rail body 11 shown in this embodiment, which is away from the first surface, is provided with a first guide rail 112 and a second guide rail 113, and the first guide rail 112 and the second guide rail 113 extend along the length direction of the rail body 11, and the first guide rail 112 and the second guide rail 113 are respectively provided at both ends of the width direction of the rail body 11.

[0044] The cross-sections of the first guide rail 112 and the second guide rail 113 can be set to be semicircular, and the tops of the first guide rail 112 and the second guide rail 113 are specifically set to be 25 mm higher than the second surface of the track body 11, and the radius of the semicircle is 25 mm. The wheel spacing of the wheels on the rail transport vehicle is 550 mm, and the two parallel track bodies 11 can be set accordingly according to the wheel spacing of the rail transport vehicle.

[0045] like Figure 3 As shown, based on the improvement of the first embodiment and the second embodiment, different from the first embodiment and the second embodiment in which the air duct 12 is constructed in the track body 11, in the third embodiment, the structure of the air duct 12 on the track body 11 is optimized, and the air duct 12 is arranged on the first surface of the track body 11. When the air duct 12 is laid out in the greenhouse, the first surface of the track body 11 is fitted with the ground without a gap, so that a complete air duct 12 can be formed between the first surface of the track body 11 and the ground.

[0046] In order to ensure that the first surface of the track body 11 is in close contact with the ground, in this embodiment, an anchor 114 is constructed on the first surface of the track body 11, and the anchor 114 is used to anchor in the ground. The anchor 114 can be specifically configured as a connecting part and an anchoring part, the connecting part is cylindrical, the anchoring part is conical, one end of the connecting part is connected to the first surface of the track body 11, and the other end of the connecting part is connected to the large end of the anchoring part, and the small end of the anchoring part is anchored in the ground.

[0047] It should be pointed out here that in this embodiment, the first retaining edge 110 and the second retaining edge 111 as shown in the first embodiment can be set on the second surface of the track body 11, and the first guide rail 112 and the second guide rail 113 as shown in the second embodiment can be set on the second surface of the track body 11, without specific limitation.

[0048] like Figure 4 As shown, based on the improvement of the first embodiment, the second embodiment and the third embodiment, in the fourth embodiment, a plurality of rail bodies 11 are provided, the plurality of rail bodies 11 are spaced apart from each other and arranged in parallel, and two adjacent rail bodies 11 are connected by a support device 115, and the support device 115 is used to place the cultivation trough. In this way, the arrangement structure based on the rail body 11 shown in this embodiment can replace the floor-standing bracket or hanging device of the cultivation trough by the support device 115.

[0049] The supporting device 115 shown in this embodiment can be a supporting rod. In this embodiment, oppositely arranged slots can be provided on the second surfaces of two adjacent rail bodies 11 along the width direction of the rail body 11, so that the two ends of the supporting rod can be directly placed in the slots of the two rail bodies 11 in a one-to-one correspondence.

[0050] It should be pointed out here that, in actual layout, air is usually supplied to the air duct 12 in the track body 11 through the main air duct 3, and the upper surface of the main air duct 3 is set flush with the second surface of the track body 11. In order to ensure that the cultivation trough is not blocked by the upper surface of the main air duct 3, it should be ensured that the setting height of the upper surface of the support rod is not lower than the second surface of the track body 11. At the same time, the installation and setting of the support rod in this embodiment should not affect the normal walking of the picking and transport vehicle on the track body 11.

[0051] Preferably, if Figure 5 As shown, this embodiment also provides a ventilation system, including a blower 2, a main air duct 3 and the greenhouse ventilation duct and track integration device 1 as described above, the air outlet of the blower 2 is connected to one end of the main air duct 3, and the main air duct 3 is connected to the air duct 12 in the track body 11.

[0052] The blower 2 shown in this embodiment may adopt a centrifugal blower known in the art, so that it is convenient to install the blower 2 and to blow a larger flow of air into the main air duct 3.

[0053] At the same time, the track body 11 and the main air duct 3 shown in this embodiment are both laid on the ground, and the upper surface of the main air duct 3 facing away from the ground is flush with the second surface of the track body 11. In this way, on the one hand, the scheme shown in this embodiment can more conveniently realize the main air duct 3 to ventilate the air ducts 12 in each track body 11 at the same time, and the arrangement structure of the track body 11 and the main air duct 3 will not affect the growth of crops, ensuring that the crops can fully receive light; on the other hand, the scheme shown in this embodiment can also ensure that various types of picking and transporting vehicles and various types of robots move according to the path planned by the track body 11, and will not interfere with the main air duct 3 during the movement. Among them, the integrated device 1 shown in the above embodiment is installed on the ground of the greenhouse or appropriately sunk, but it should be ensured that the lower surface of the air duct 12 in each track body 11 is not lower than the ground height.

[0054] It should be pointed out here that in modern multi-span greenhouses that produce fruit and vegetable crops such as tomatoes, cucumbers and bell peppers, in order to ensure uniform light exposure for the crops, the cultivation rows are usually arranged in the north-south direction. In order to adapt to the multi-span greenhouse cultivation mode, the present embodiment can specifically arrange multiple track bodies 11 arranged in the north-south direction, and each track body 11 is arranged between two adjacent rows of cultivation rows. At the same time, each track body 11 is composed of multiple splicing units connected in sequence along the north-south direction; multiple main air ducts 3 are used to be arranged in the east-west direction, so as to ventilate the air ducts 12 in each track body 11 at the same time.

[0055] Preferably, if Figure 5 As shown, this embodiment also provides a greenhouse, including a greenhouse house 4, in which the greenhouse ventilation duct and track integrated device as described above, or the ventilation system as described above, is arranged.

[0056] Since the greenhouse includes an integrated device 1 and a ventilation system, the specific structures of the integrated device 1 and the ventilation system refer to the above embodiments. Obviously, the greenhouse adopts all the technical solutions of all the above embodiments, and therefore, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0057] In a specific embodiment, a building with an area of ​​about 100,000 m2 is used in northern China. 2 Taking the multi-span glass greenhouse as an example, the greenhouse shown in this embodiment is specifically described as follows.

[0058] The multi-span glass greenhouse shown in this embodiment is arranged in a north-south direction, with a length of 480m in the north-south direction and a length of 218.3m in the east-west direction, a bay of 8m, a standard span of 13.2m, a roof inclination of 23°, a shoulder height of 5.8m, a ridge height of 8.3m, and supporting internal and external insulation. There is a 3.5m wide transportation road in the north-south direction in the middle of the multi-span glass greenhouse to divide the multi-span glass greenhouse into two parts, east and west. There are also two transportation roads in the east-west direction of the multi-span glass greenhouse. A 3m wide equipment room is set on the east and west sides of the multi-span glass greenhouse, which is also used as an air corridor for installing environmental control equipment such as centrifugal fans, wet curtains, surface coolers, ozone generators and carbon dioxide replenishment devices, and the equipment room is provided with outer windows and inner windows to switch the air inside and outside of the multi-span glass greenhouse. At the same time, rock wool is used to grow tomatoes in the multi-span glass greenhouse, and the spacing between plant rows is 1.65m. The greenhouse picking and transport vehicle can be a common rubber wheel picking and transport vehicle with an outer wheel spacing of 760mm and a tire width of 80mm, or a rail wheel picking and transport vehicle with a wheel centerline spacing of 550mm. The selection can be adaptively made according to the specific structure of the integrated device described in the above embodiment.

[0059] Furthermore, the ventilation volume of a single centrifugal fan installed in the equipment room is 35,000 m 3 / h, rated power 11kW, full pressure 600Pa, control 848m 2 (106m long from east to west, 8m long from north to south) For the cultivation area in the multi-span glass greenhouse, the ventilation volume per unit greenhouse area is 41.3m 3 / (m 2 h). That is, one centrifugal fan controls an entire bay in the east or west half of the multi-span glass greenhouse. A 100,000 square meter multi-span glass greenhouse has a total of 60 bays, which requires a total of 120 centrifugal fans. Each centrifugal fan corresponds to a main air duct arranged in the east-west direction. The main air duct has a net width of 1m and a net height of 0.8m, and its diameter changes as it extends. The main air duct is located in the middle of the 8m bay and is connected to the air ducts in each track body. At 848m 2 There are a total of 1024 air outlets, the wind speed of the centrifugal fan outlet is 12m / s, and the maximum wind speed of the air outlet at the end is 4.8m / s.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A greenhouse ventilation duct and track integrated device, characterized in that: include: Track body; An air duct extends along the length direction of the track body, the air duct is constructed in the track body or on the first surface of the track body, and the first surface is used to fit the ground; An air outlet hole is constructed in the track body, one end of the air outlet hole is connected to the cavity where the air duct is located, and the other end is formed on the outer side of the track body; The track body includes a first area, a second area and a third area; the first area, the second area and the third area are arranged in sequence along the width direction of the track body; the air duct is constructed in the second area, and the first area and the third area are used to provide support for wheels running on the track body; In the case where the air duct is constructed on the first surface of the track body, the first surface is constructed with an anchor, and the anchor is used to be anchored in the ground.

2. The greenhouse ventilation duct and track integrated device according to claim 1, characterized in that: The air outlet holes are arranged axially along the width direction of the track body; And / or, the air outlet holes are arranged in the first area and the third area; the track body has a first side surface and a second side surface that are opposite to each other along its width direction, and the other end of the air outlet holes is formed on the first side surface or the second side surface; the air outlet holes located in the first area and the third area are arranged alternately along the length direction of the track body.

3. The greenhouse ventilation duct and track integrated device according to any one of claims 1 to 2, characterized in that: A first guide rail and a second guide rail are provided on a second surface of the track body that is away from the first surface. The first guide rail and the second guide rail extend along the length direction of the track body. The first guide rail and the second guide rail are respectively provided at two ends of the width direction of the track body.

4. The greenhouse ventilation duct and track integrated device according to any one of claims 1 to 2, characterized in that: A first rib and a second rib are provided on a second surface of the track body that is away from the first surface. The first rib and the second rib extend along the length direction of the track body. The first rib and the second rib are respectively provided at two ends of the width direction of the track body.

5. The greenhouse ventilation duct and track integrated device according to any one of claims 1 to 2, characterized in that: The track bodies are provided with a plurality of rail bodies, which are spaced apart from each other and arranged in parallel, and two adjacent track bodies are connected by a supporting device, and the supporting device is used for placing the cultivation trough.

6. A ventilation system, characterized in that: It comprises a blower, a main air duct and a greenhouse ventilation duct and track integration device as described in any one of claims 1 to 5, wherein the air outlet of the blower is connected to one end of the main air duct, and the main air duct is connected to the air duct in the track body.

7. The ventilation system according to claim 6, characterized in that The track body and the main air duct are both used for laying on the ground, and the upper surface of the main air duct facing away from the ground is flush with the second surface of the track body; And / or, a plurality of the track bodies are arranged along the north-south direction, and each of the track bodies is composed of a plurality of splicing units; and a plurality of the main air ducts are arranged along the east-west direction.

8. A greenhouse, characterized in that: The greenhouse is provided with a greenhouse ventilation duct and track integrated device as described in any one of claims 1 to 5, or a ventilation system as described in claim 6 or 7.

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