Multi-layer seedbed for space planting

Abstract

The present application relates to a kind of multilayer seedbed for space planting, belong to space planting technical field, including box, the left and right side walls of the inner chamber of box are all fixed with stable axle, two described stable axle are fixed with fluorescent lamp between, the left inner wall of box is equipped with the drive mechanism that can improve water supply effect, the right inner wall of box is equipped with the control mechanism that improves astronaut picking plant simplicity, the top of box is fixed and is communicated with suction duct, the side of suction duct away from box is equipped with solid-liquid gas separation component, the solid-liquid gas separation component is fixed with left side wall of box.The multilayer seedbed for space planting, by controlling drive mechanism and control mechanism start simultaneously, lock small gear, at this time under the action of drive mechanism will drive seedling assembly to rotate with fluorescent lamp as rotating center, guarantee good illumination effect, simultaneously start micro water pump, under the action of centrifugal force, make culture medium absorb water.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of space planting, in particular to a multi-layer seedbed for space planting. BACKGROUND

[0002] The seedbed for space planting is the core facility for plant cultivation in a closed space in space, and is designed to adapt to microgravity conditions, solve the problems of root water supply, nutrient transport and light distribution in traditional planting, and provide fresh food and oxygen regeneration for astronauts through planting crops, and support ecological closed loop and life maintenance for long-term space missions through plant metabolism and water cycle system.

[0003] The multi-layer seedbed maximizes the use of limited space in the cabin under microgravity in space and improves the plant cultivation density per unit volume through three-dimensional shelf design, and the independent control of each layer can accurately adapt to the needs of different crops, such as adjusting the nutrient solution supply and air circulation according to the layer, solving the problems of uneven light and unbalanced water and oxygen distribution in traditional single-layer planting, and ensuring the uniform growth of crops such as lettuce and wheat under weightlessness conditions.

[0004] However, the existing multi-layer seedbed for space planting has poor resource recycling effect, and since the existing multi-layer seedbed is mostly a multi-layer stacked structure, leaves are easily stuck in the gaps and are difficult to collect and recycle, so a multi-layer seedbed for space planting is proposed to solve the above problems. SUMMARY

[0005] In view of the deficiencies in the prior art, the present application provides a multi-layer seedbed for space planting, which has the advantages of good resource recycling effect, and solves the problem of poor resource recycling of the existing seedbed.

[0006] To achieve the above purpose, the present application provides the following technical scheme: a multi-layer seedbed for space planting, comprising a box body, a stable shaft is fixed on the left and right side walls of the inner cavity of the box body, a daylight lamp is fixed between the two stable shafts, a driving mechanism for improving water supply effect is arranged on the inner left wall of the box body, a control mechanism for improving the convenience of astronauts picking plants is arranged on the inner right wall of the box body, an air suction pipeline is fixed and communicated with the top of the box body, a solid-liquid-gas separation assembly is arranged on the side of the air suction pipeline away from the box body, and the solid-liquid-gas separation assembly is fixed with the left side wall of the box body.

[0007] The driving mechanism comprises two connecting sleeves respectively connected with the outer surfaces of the two stable shafts through bearings, a first servo motor is fixed to the left wall in the box body, a driving gear is fixed to one end of the output shaft of the first servo motor, a driven gear is fixed to the outer surface of the left connecting sleeve, the driven gear is engaged with the driving gear, a plurality of connecting rods are fixed to the outer surface of each connecting sleeve, each of the opposite sides of the two connecting rods is provided with a seedling raising assembly, rotating rods penetrating through the connecting rods are fixed to the left and right sides of each seedling raising assembly, and small gears are fixed to the outer surfaces of the rotating rods.

[0008] The control mechanism comprises a second servo motor fixed to the right wall in the box body, a driving rod is fixed to one end of the output shaft of the second servo motor, a driving gear is fixed to the outer surface of the driving rod, and a connecting frame is arranged on the outer side of the connecting sleeve.

[0009] The solid-liquid-gas separation assembly comprises an outer shell fixed to the right side of the box body, a first filter plate and a second filter plate are fixed to the inner side of the outer shell from top to bottom, an extension shell is fixed to the bottom of the outer shell, a separation part penetrating through the outer shell and extending into the extension shell is arranged on the inner side of the outer shell, a water suction cylinder is fixed to the inner side wall of the outer shell, a connecting pipeline is fixed and communicated to the left side of the outer shell, and a gas suction pump is fixed and communicated to the bottom of the outer shell.

[0010] Further, each seedling raising assembly comprises a seedling raising bed body, culture bases are placed on the inner side of each seedling raising bed body, stable grooves are formed in the opposite sides of each seedling raising bed body, water tanks are fixed in each stable groove, a micro water pump is fixed and communicated to the side of each water tank close to the fluorescent lamp, each micro water pump is fixed to the inner side wall of the stable groove, a connecting pipeline extending out of the seedling raising bed body is fixed and communicated to the side of each micro water pump away from the water tank, and a plurality of spray heads are fixed and communicated to the side of the connecting pipeline close to the plurality of culture bases.

[0011] Further, a stable table is fixed to the side of each seedling raising bed body close to the fluorescent lamp, and a plurality of connecting pipelines penetrate through a plurality of stable tables.

[0012] Further, a plurality of culture grooves are formed in the side of each seedling raising bed body close to the fluorescent lamp, a plurality of culture bases are placed in the plurality of culture grooves, and a plurality of drainage holes communicating with the culture grooves are formed in the side of each seedling raising bed body away from the fluorescent lamp.

[0013] Further, a water injection hole is formed in the side of each water tank away from the fluorescent lamp, and a water stop plug is arranged in the inner side of each water injection hole.

[0014] Further, the connecting frame comprises two rotating plates, the outer surfaces of the two rotating plates are rotatably connected with the two connecting sleeves through bearings, the opposite sides of the two rotating plates are fixed with a plurality of thin rods, the right side of the right rotating plate is fixed with a driving cylinder engaged with the driving gear, and the opposite sides of the two rotating plates are both provided with annular grooves, and the inner sides of the annular grooves are both fixed with a plurality of internal teeth.

[0015] Further, the plurality of thin rods are located outside the control mechanism, the opposite sides of the two rotating plates are both provided with a plurality of air holes in communication with the annular grooves, and the inner side walls of the box body are fixed with two stable seats, and the two rotating plates are rotatably connected with the two stable seats through bearings.

[0016] Further, the plurality of thin rods are located outside the control mechanism, the opposite sides of the two rotating plates are both provided with a plurality of air holes in communication with the annular grooves, and the inner side walls of the box body are fixed with two stable seats, and the two rotating plates are rotatably connected with the two stable seats through bearings.

[0017] Further, the separating part comprises a central rod penetrating the bottom wall of the shell and rotatably connected with the bottom wall of the shell through a bearing, the outer side of the central rod is fixed with a spiral blade located on the inner side of the water suction cylinder, and the outer side of the central rod is fixed with a plurality of fan leaves located on the inner side of the extension shell.

[0018] Further, the inner side of the water suction cylinder is provided with a plurality of capillary holes penetrating the side wall of the water suction cylinder, the inner side wall of the shell is provided with a water storage groove in communication with the plurality of capillary holes, the left side of the shell is provided with a water passing hole in communication with the water storage groove, and the connecting pipeline is in communication with the water storage groove through the water passing hole.

[0019] Compared with the prior art, the application provides a multi-layer seedling bed for space planting, which has the following beneficial effects:

[0020] 1. The multi-layer seedling bed for space planting, by controlling the driving mechanism and the control mechanism to start at the same time, the pinion is locked, at this time, under the action of the driving mechanism, the seedling assembly is driven to rotate around the sunlight lamp as the rotating center, ensuring good illumination effect, and the micro water pump is started at the same time, under the action of centrifugal force, the culture medium is prompted to absorb water.

[0021] 2. The multi-layer seedling bed for space planting, by locking the first servo motor and starting the second servo motor, a plurality of seedling assemblies are simultaneously turned outwards, after turning, the first servo motor and the second servo motor are started at the same time, the seedling assembly is slowly rotated, and astronauts only need to stand in front of the device to simply observe all plants and facilitate picking.

[0022] 3、The multi-layer seedling bed for space planting can extract the excessive water after the nozzle is watered through the solid-liquid-gas separation assembly, improve the utilization rate of water resources, and collect fallen leaves in the plant growth process, and improve the environmental tidiness. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a structural schematic view of the application;

[0024] Figure 2 It is a structural schematic view of the application Figure 1 It is an enlarged view of A in the application;

[0025] Figure 3 It is a structural schematic view of the connecting frame of the application;

[0026] Figure 4 It is a structural schematic view of the solid-liquid-gas separation assembly of the application;

[0027] Figure 5 It is a three-dimensional appearance view of the separation part.

[0028] In the figure: 1 box body, 2 stable shaft, 3 daylight lamp, 4 driving mechanism, 401 connecting sleeve, 402 first-stage servo motor, 403 driving gear, 404 driven gear, 405 connecting rod, 406 seedling assembly, 4061 seedling bed body, 4062 culture medium, 4063 stable groove, 4064 water tank, 4065 micro water pump, 4066 communication pipeline, 4067 nozzle, 407 rotating rod, 408 pinion, 5 control mechanism, 501 second-stage servo motor, 502 driving rod, 503 driving gear, 504 connecting frame, 5041 rotating plate, 5042 thin rod, 5043 driving cylinder, 5044 annular groove, 5045 inner tooth, 6 air suction pipeline, 7 solid-liquid-gas separation assembly, 701 shell, 702 extension shell, 703 first-stage filter plate, 704 second-stage filter plate, 705 separation part, 7051 center rod, 7052 spiral piece, 7053 fan blade, 706 water suction cylinder, 707 connecting pipeline, 708 air suction pump. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative labor fall within the protection scope of the application.

[0030] Please refer to Figures 1 to 3The multilayer seedling bed for space planting in the embodiment comprises a box body 1, a movable door is arranged on the front side of the box body 1, an observation window is inlaid on the movable door, a user can observe plants through the observation window, a stable shaft 2 is fixed on the left and right side walls in the inner cavity of the box body 1, a fluorescent lamp 3 is fixed between the two stable shafts 2, the fluorescent lamp 3 can provide good and stable light for plants, a driving mechanism 4 capable of improving water supply effect is arranged on the inner left wall of the box body 1, a control mechanism 5 capable of improving the convenience of astronauts picking plants is arranged on the inner right wall of the box body 1, an air suction pipeline 6 is fixedly connected to the top of the box body 1, a solid-liquid-gas separation assembly 7 is arranged on the side of the air suction pipeline 6 away from the box body 1, the solid-liquid-gas separation assembly 7 is fixed to the left side wall of the box body 1, and a plurality of air holes are arranged on the box body 1.

[0031] In addition, the driving mechanism 4 comprises two connecting sleeves 401 which are respectively rotatably connected to the outer surfaces of the two stable shafts 2 through bearings, the two stable shafts 2 serve as supports to ensure that the two connecting sleeves 401 can stably rotate, a primary servo motor 402 is fixed to the inner left wall of the box body 1, a driving gear 403 is fixed to one end of the output shaft of the primary servo motor 402, a driven gear 404 is fixed to the outer surface of the left connecting sleeve 401, when the primary servo motor 402 is started, power is transmitted from the driving gear 403 to the driven gear 404, and then the connecting rod 405 is driven to rotate through the driven gear 404, when the connecting rod 405 rotates, the seedling assembly 406 is caused to revolve around the fluorescent lamp 3, the driven gear 404 is engaged with the driving gear 403, a plurality of connecting rods 405 are fixed to the outer surfaces of each connecting sleeve 401, the seedling assembly 406 is arranged on the opposite side of each two connecting rods 405, the rotating rod 407 penetrating through the connecting rod 405 is fixed to the left and right sides of each seedling assembly 406, and the pinion 408 is fixed to the outer surface of each rotating rod 407;

[0032] It needs to be further explained that each seedling raising assembly 406 comprises a seedling bed body 4061, the inner side of each seedling bed body 4061 is placed with a culture medium 4062 which can help the growth of plants, and the side opposite to each seedling bed body 4061 is provided with a stable groove 4063, each stable groove 4063 is fixed with a water tank 4064, the water tank 4064 contains water, when the micro water pump 4065 is started, the water in the water tank 4064 will be pumped out, the side of the water tank 4064 close to the daylight lamp 3 is fixedly connected with the micro water pump 4065, each micro water pump 4065 is fixed with the inner wall of the stable groove 4063, the stable groove 4063 can provide good and stable support for the micro water pump 4065 and the water tank 4064, the side of the micro water pump 4065 away from the water tank 4064 is fixedly connected with a communication pipeline 4066 extending out of the seedling bed body 4061, the communication pipeline 4066 can provide space for water flow, and then sprayed onto the culture medium 4062 through the spray head 4067, the side of the communication pipeline 4066 close to the plurality of culture media 4062 is fixedly connected with a plurality of spray heads 4067.

[0033] It can be known that the side of each seedling bed body 4061 close to the daylight lamp 3 is fixed with a stable platform, which plays a supporting role for the communication pipeline 4066, ensuring that water can smoothly and stably pass through the communication pipeline 4066, a plurality of communication pipelines 4066 respectively penetrate a plurality of stable platforms, the side of each seedling bed body 4061 close to the daylight lamp 3 is provided with a plurality of culture grooves, the culture grooves can leave enough space for the culture medium 4062 to be placed, a plurality of culture media 4062 are respectively placed in a plurality of culture grooves, the side of each seedling bed body 4061 away from the daylight lamp 3 is provided with a plurality of drainage holes communicated with the culture grooves, when watering is too much, the excess water can flow out through the drainage holes, avoiding that too much water causes the plant to rot, the side of each water tank 4064 away from the daylight lamp 3 is provided with a water filling hole, the inner side of each water filling hole is plugged with a water stop plug, when it is needed to supplement water in the water tank 4064, only the water stop plug needs to be pulled out, and then water can be easily filled into the water tank 4064.

[0034] In addition, the control mechanism 5 comprises a secondary servo motor 501 fixed with the right wall in the box body 1, one end of the output shaft of the secondary servo motor 501 is fixed with a driving rod 502, the outer surface of the driving rod 502 is fixed with a driving gear 503, when the secondary servo motor 501 is started, the power is transmitted to the connecting frame 504 through the driving gear 503, so as to make the connecting frame 504 stably rotate, and the outer side of the connecting sleeve 401 is provided with the connecting frame 504.

[0035] Further, the connecting frame 504 comprises two rotating plates 5041, the two rotating plates 5041 are rotatably connected with the outer surfaces of the two connecting sleeves 401 respectively through bearings, the bearings can ensure the stable rotation of the rotating plates 5041, the opposite sides of the two rotating plates 5041 are fixed with a plurality of thin rods 5042, the thin rods 5042 play a connecting role, promote the synchronous rotation of the two rotating plates 5041, the right side of the right rotating plate 5041 is fixed with a driving cylinder 5043 engaged with the driving gear 503, the opposite sides of the two rotating plates 5041 are both provided with annular grooves 5044, the inner sides of each annular groove 5044 are both fixed with a plurality of internal teeth 5045, the internal teeth 5045 play a role in transmitting power.

[0036] It needs to be further explained that the plurality of thin rods 5042 are all located outside the control mechanism 5, the opposite sides of the two rotating plates 5041 are both provided with a plurality of air holes in communication with the annular grooves 5044, the air holes can facilitate the circulation of gas, avoid the negative pressure after the gas is sucked away by the suction pipe 6, the inner side wall of the box body 1 is fixed with two stable seats, the stable seats can improve the stability of the two rotating plates 5041, and play a supporting role for the two rotating plates 5041, the two rotating plates 5041 are rotatably connected with the two stable seats through bearings, each pinion 408 is located in the annular groove 5044, and each pinion 408 is engaged with the internal teeth 5045.

[0037] In the embodiment, the front of the box body 1 is fixed with a servo controller, the first-level servo motor 402 and the second-level servo motor 501 can be controlled through the servo controller, so as to ensure the smooth operation of the device and improve the overall operation stability.

[0038] Please refer to Figure 4 and Figure 5In order to improve the resource utilization, the solid-liquid-gas separation assembly 7 in the embodiment comprises an outer shell 701 fixed to the right side of the box body 1, which can protect other parts in the solid-liquid-gas separation assembly 7. The inner side of the outer shell 701 is sequentially fixed from top to bottom with a first filter plate 703 and a second filter plate 704. The left side of the outer shell 701 is hingedly connected with two cleaning doors. The first filter plate 703 and the second filter plate 704 are both inclined to the cleaning doors. This structure can facilitate the later concentrated cleaning. The leaves and the like cleaned out can be made into fertilizer through fermentation. The bottom of the outer shell 701 is fixed with an extension shell 702. The inner side of the outer shell 701 is provided with a separation part 705 extending through the outer shell 701 and into the extension shell 702. The inner side wall of the outer shell 701 is fixed with a water suction cylinder 706. The left side of the outer shell 701 is fixedly connected with a connecting pipeline 707. The side of the connecting pipeline 707 away from the outer shell 701 is fixedly connected with a water pump. The side of the water pump away from the connecting pipeline 707 is fixedly connected with a sewage treatment device. The bottom of the outer shell 701 is fixedly connected with an air suction pump 708. The side of the air suction pump 708 away from the outer shell 701 is fixedly connected with an exhaust pipe. The side of the exhaust pipe away from the air suction pump 708 is fixedly connected with a gas treatment device.

[0039] It should be further explained that the separation part 705 comprises a central rod 7051 extending through the bottom wall of the outer shell 701 and rotationally connected with the bottom wall of the outer shell 701 through a bearing. The outer side of the central rod 7051 is fixed with a spiral blade 7052 located in the inner side of the water suction cylinder 706. Through the cooperation of the spiral blade 7052 and the water suction cylinder 706, a spiral channel can be formed to make the gas carrying water droplets move downward in a spiral shape. At this time, due to the action of centrifugal force, the water droplets will be thrown outward and adhere to the water suction cylinder 706, thereby absorbing water. The outer side of the central rod 7051 is fixed with a plurality of fan blades 7053 located in the inner side of the extension shell 702.

[0040] It can be known that the inner side of the water suction cylinder 706 is provided with a plurality of capillary holes extending through the side wall of the water suction cylinder 706. The capillary holes can suck water droplets in through capillary force. The inner side wall of the outer shell 701 is provided with a water storage groove in communication with the plurality of capillary holes. The water storage groove is used to store the sucked water and discharge the water through the connecting pipeline 707. The left side of the outer shell 701 is provided with a water passage hole in communication with the water storage groove. The connecting pipeline 707 is in communication with the water storage groove through the water passage hole.

[0041] In the embodiment, the first filter plate 703 and the second filter plate 704 cooperate to effectively block the leaves and the like, and then the spiral blade 7052 cooperates with the water suction cylinder 706 to effectively absorb water, thereby improving the resource utilization.

[0042] It can be understood that, through the cooperation of the driving mechanism 4 and the control mechanism 5, good and stable light and water supply can be ensured, and astronauts can observe and collect plants at the same time, and the utilization rate of resources can be improved through the solid-liquid-gas separation assembly 7.

[0043] The electrical components in the present application are electrically connected with the controller and the power supply, the control mode of the present application is controlled by the controller, the control circuit of the controller can be realized by simple programming of those skilled in the art, the power supply is also a common knowledge in the art, and the present application is mainly used to protect mechanical devices, so the control mode and circuit connection of the present application will not be explained in detail.

[0044] The working principle of the above embodiment is as follows:

[0045] (1) When used normally, the first-stage servo motor 402 and the second-stage servo motor 501 are started at the same time, the first-stage servo motor 402 drives the driving gear 403 to rotate, under the driving action of the first-stage servo motor 402, the connecting rod 405 drives the seedling assembly 406 to rotate due to the meshing relationship between the driving gear 403 and the driven gear 404, at the same time, the second-stage servo motor 501 drives the driving gear 503 to rotate, further driving the connecting frame 504 to rotate, since the connecting frame 504 and the seedling assembly 406 rotate at the same speed at this time, the pinion 408 is in a locked state, and the micro water pump 4065 pumps water in the water tank 4064, sprays the culture medium 4062 through a plurality of nozzles 4067, and due to the centrifugal force of rotation, the water penetrates into the culture medium 4062, thereby stably supplying water to the plants.

[0046] (2) When the astronaut needs to observe the plants, the first-stage servo motor 402 is locked first, and the second-stage servo motor 501 is started at this time, at this time, the seedling assembly 406 cannot revolve around the sunlight lamp 3, but due to the action of the second-stage servo motor 501, the connecting frame 504 is driven to rotate at this time, due to the meshing relationship between the inner teeth 5045 and the pinion 408, the pinion 408 is rotated at this time, thereby driving the seedling assembly 406 to overturn, when the culture medium 4062 on the seedling assembly 406 is overturned to the outside, the first-stage servo motor 402 and the second-stage servo motor 501 are started at the same time, the seedling assembly 406 revolves slowly around the sunlight lamp 3, the astronaut can quickly observe the plants, and the astronaut can directly collect the suitable plants.

[0047] (3) After watering, some excess water may float in the air, at this time, the air suction pump 708 is started to promote the air to carry water droplets and fallen leaves together through the air suction pipe 6 to be sucked into the shell 701, at this time, the first filter plate 703 and the second filter plate 704 can intercept the fixed leaves and the like, and the liquid and the gas flow together to the spiral blade 7052, because the spiral blade 7052 and the water suction cylinder 706 form a special spiral channel, the air spirals downward, and because of the centrifugal force, the water droplets are thrown outward and absorbed through the water suction cylinder 706, and at the same time, the air passing through the fan blade 7053 drives the fan blade 7053 to slowly rotate, promoting the water droplets attached to the spiral blade 7052 to move to the water suction cylinder 706, and finally the water is pumped out through the connecting pipe 707.

[0048] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises... " does not, without more limitations, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the recited element.

[0049] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, alternatives, and variations can be made in the embodiments without departing from the spirit and scope of the present application.

Claims

1. A multi-layer seedling bed for aerospace planting, comprising a box (1), characterized in that: The left and right side walls of the inner cavity of the box (1) are fixed with stabilizing shafts (2), and a fluorescent lamp (3) is fixed between the two stabilizing shafts (2). The left inner wall of the box (1) is provided with a drive mechanism (4) that can improve the water supply effect. The right inner wall of the box (1) is provided with a control mechanism (5) that improves the ease of plant picking for astronauts. The top of the box (1) is fixedly connected with an air intake pipe (6). The side of the air intake pipe (6) away from the box (1) is provided with a solid-liquid-gas separation component (7). The solid-liquid-gas separation component (7) is fixed to the left side wall of the box (1). The drive mechanism (4) includes two connecting sleeves (401) that are rotatably connected to the outer surfaces of two stabilizing shafts (2) via bearings. A primary servo motor (402) is fixed on the left inner wall of the housing (1). A drive gear (403) is fixed at one end of the output shaft of the primary servo motor (402). A driven gear (404) is fixed on the outer surface of the connecting sleeve (401) on the left side. The driven gear (404) meshes with the drive gear (403). Multiple connecting rods (405) are fixed on the outer surface of each connecting sleeve (401). A seedling assembly (406) is provided on the opposite side of each pair of connecting rods (405). Rotating rods (407) that pass through the connecting rods (405) are fixed on the left and right sides of each seedling assembly (406). A small gear (408) is fixed on the outer surface of each rotating rod (407). The control mechanism (5) includes a secondary servo motor (501) fixed to the right wall inside the housing (1). One end of the output shaft of the secondary servo motor (501) is fixed with a drive rod (502). A drive gear (503) is fixed on the outer surface of the drive rod (502). A connecting frame (504) is provided on the outer side of the connecting sleeve (401). The solid-liquid-gas separation assembly (7) includes an outer shell (701) fixed to the right side of the housing (1). A primary filter plate (703) and a secondary filter plate (704) are fixed to the inner side of the outer shell (701) from top to bottom. An extension shell (702) is fixed to the bottom of the outer shell (701). A separation part (705) is provided on the inner side of the outer shell (701) that penetrates the outer shell (701) and extends into the extension shell (702). A water suction cylinder (706) is fixed to the inner wall of the outer shell (701). A connecting pipe (707) is fixedly connected to the left side of the outer shell (701). A vacuum pump (708) is fixedly connected to the bottom of the outer shell (701).

2. The multi-layer seedling bed for aerospace planting according to claim 1, characterized in that: Each of the seedling components (406) includes a seedling bed body (4061), and a culture medium (4062) is placed on the inner side of each seedling bed body (4061). A stabilizing groove (4063) is opened on the opposite side of each seedling bed body (4061). A water tank (4064) is fixed in each stabilizing groove (4063). A miniature water pump (4065) is fixedly connected to the side of the water tank (4064) near the fluorescent lamp (3). Each miniature water pump (4065) is fixed to the inner wall of the stabilizing groove (4063). A connecting pipe (4066) extending to the outside of the seedling bed body (4061) is fixedly connected to the side of the miniature water pump (4065) away from the water tank (4064). A plurality of nozzles (4067) are fixedly connected to the side of the connecting pipe (4066) near the plurality of culture media (4062).

3. The multi-layer seedling bed for aerospace planting according to claim 2, characterized in that: Each of the seedling bed bodies (4061) has a stabilizing platform fixed on the side near the fluorescent lamp (3), and the multiple connecting pipes (4066) pass through the multiple stabilizing platforms respectively.

4. The multi-layer seedling bed for aerospace planting according to claim 2, characterized in that: Each of the seedling bed bodies (4061) has multiple culture troughs on the side near the fluorescent lamp (3), and multiple culture media (4062) are placed in the multiple culture troughs respectively. Each of the seedling bed bodies (4061) has multiple drainage holes connected to the culture troughs on the side away from the fluorescent lamp (3).

5. A multi-layer seedbed for aerospace planting according to claim 2, characterized in that: Each of the water tanks (4064) has a water inlet on the side away from the fluorescent lamp (3), and each water inlet is plugged with a water stop plug on the inside.

6. The multi-layer seedling bed for aerospace planting according to claim 1, characterized in that: The connecting frame (504) includes two rotating plates (5041), which are rotatably connected to the outer surfaces of two connecting sleeves (401) via bearings. Multiple thin rods (5042) are fixed on opposite sides of the two rotating plates (5041), and a drive cylinder (5043) that meshes with the drive gear (503) is fixed on the right side of the right rotating plate (5041). An annular groove (5044) is provided on opposite sides of the two rotating plates (5041), and multiple internal teeth (5045) are fixed inside each annular groove (5044).

7. A multi-layer seedbed for aerospace planting according to claim 6, characterized in that: Multiple thin rods (5042) are located on the outside of the control mechanism (5). Multiple ventilation holes connected to the annular groove (5044) are opened on the opposite side of the two rotating plates (5041). Two stabilizing seats are fixed on the inner wall of the box (1). The two rotating plates (5041) are rotatably connected to the two stabilizing seats through bearings.

8. A multi-layer seedbed for aerospace planting according to claim 6, characterized in that: Each of the pinions (408) is located in an annular groove (5044), and each of the pinions (408) meshes with an internal tooth (5045).

9. A multi-layer seedbed for aerospace planting according to claim 1, characterized in that: The separation section (705) includes a central rod (7051) that penetrates the bottom wall of the outer shell (701) and is rotatably connected to the bottom wall of the outer shell (701) via a bearing. A spiral blade (7052) located inside the water suction cylinder (706) is fixed to the outside of the central rod (7051). A plurality of fan blades (7053) located inside the extension shell (702) are fixed to the outside of the central rod (7051).

10. A multi-layer seedbed for aerospace planting according to claim 9, characterized in that: The inner side of the water suction cylinder (706) is provided with multiple capillary holes penetrating the side wall of the water suction cylinder (706). The inner side wall of the outer shell (701) is provided with a water storage tank that communicates with the multiple capillary holes. The left side of the outer shell (701) is provided with a water passage hole that communicates with the water storage tank. The connecting pipe (707) is connected to the water storage tank through the water passage hole.

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