A seedling hardening device for green plants

Abstract

The present invention relates to the technical field of green plants, and specifically to a seedling hardening device for green plants, which includes a box body, a moving plate and a power component. A cultivation cavity and a seedling hardening cavity are arranged side by side in the box body, and their upper and lower positions are connected to each other to form a "return"-shaped moving channel. The power component drives a plurality of moving plates to move cyclically in the moving channel. A plurality of air holes are provided on the inner wall of the cultivation cavity to replace the air in the cultivation cavity and provide a changing negative pressure to the seedling hardening cavity. The top wall of the seedling hardening cavity is connected to the outside, and the air flow direction is opposite to the moving direction of the moving plate. The present invention applies negative pressures of different times and intensities to the seedling hardening cavity through the air holes below, and discharges the air in the seedling hardening cavity to the external environment through the movement of the moving plate, so as to realize that the air at the opening of the seedling hardening cavity continuously enters the seedling hardening cavity and is continuously pushed out by the moving plate, so that the air concentration inside and outside the seedling hardening cavity gradually decreases in the direction away from the opening of the seedling hardening cavity, resulting in a gradual increase in the exercise intensity of the green plant seedlings and a decrease in the mortality rate.

Description

Technical Field

[0001] The present invention relates to the technical field of green plants, and specifically relates to a seedling hardening device for green plants. Background Art

[0002] When cultivating green plants, it is often necessary to conduct tissue culture on rare varieties, which can reproduce a large number of specific plants in a short time to break through the influence of seeds on the plant production rate and retain the characteristics of the mother plant at the same time. However, when conducting plant tissue culture, it is necessary to completely isolate the external environmental air, and after the cultivation is completed, the plants need to be placed in the external environment for hardening to increase the survival rate of transplanting the plants. This makes it necessary for the cultivation personnel to often take the plants out of the cultivation box and connect them to the external environment, and can only manually control the contact time of the seedlings with the external air by the cultivation personnel. Moreover, when taking out the seedlings, other seedlings still in the cultivation stage will also come into contact with the external air, which will cause the seedlings to directly contact the external viruses and increase the mortality rate.

[0003] Therefore, a seedling hardening device for green plants is needed to solve the problem of high mortality rate of green plant seedlings during seedling hardening. Summary of the Invention

[0004] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a seedling hardening device for green plants. The power motor drives the moving plate to move in the cultivation chamber and the seedling hardening chamber, and then uses the air holes to pass the external air through the upper opening of the seedling hardening chamber and into the bottom of the cultivation chamber. By using the characteristic that the moving direction of the moving plate is opposite to the air flow direction, the air concentration is lower at the position farther away from the upper opening of the seedling hardening chamber, so as to prevent the green plants from directly contacting too many external viruses and necrosis.

[0005] The above technical purpose of the present invention is achieved through the following technical solutions: The seedling hardening device for green plants includes a box body, a moving plate and a power component. A cultivation chamber and a seedling hardening chamber are arranged side by side in the box body, and their upper and lower positions are interconnected to form a "return" - shaped moving channel. The power component drives a plurality of the moving plates to move in a cycle in the moving channel. A plurality of air holes are provided on the inner wall of the cultivation chamber to replace the air in the cultivation chamber and provide a changing negative pressure to the seedling hardening chamber. The top wall of the seedling hardening chamber is communicated with the outside, and the air flow direction is opposite to the moving direction of the moving plate.

[0006] By adopting the above technical solution, the power component is used to drive the moving plate to move, and the green plant seedlings on the moving plate are cultivated in the cultivation cavity and hardened in the hardening cavity. At the same time, the air between two adjacent moving plates in the cultivation cavity is replaced by the air holes, and different negative pressures are applied to the hardening cavity, so that the outside air enters it at different flow rates. Moreover, the air in the hardening cavity is pushed out of the opening of the hardening cavity by the moving plate, so that the concentration of the outside air between two adjacent moving plates in the hardening cavity gradually decreases with the distance from the opening of the hardening cavity, improving the cultivation effect of the green plant seedlings and reducing the mortality rate.

[0007] The present invention is further configured as follows: the cultivation cavity and the hardening cavity are communicated through a communication groove at the upper and lower sides, and a moving channel for the movement of the moving plate is formed. A sealing component that only allows the moving plate to pass through is provided at the upper communication position of the two, and a "U"-shaped air flow channel composed of the hardening cavity, the lower communication groove, and the cultivation cavity is formed.

[0008] By adopting the above technical solution, the moving plate moves cyclically along the moving channel and can drive the culture dish to move from the storage cavity to the opening of the hardening cavity, and the plant tissue in the culture dish is cultivated in the cultivation cavity. Then, the sealing component is used to make the outside air flow only enter and pass through the hardening cavity from the upper opening of the hardening cavity, and then enter the cultivation cavity from the lower position. Moreover, when the moving plate moves, it can also push out the gas in the hardening cavity, so that the concentration of the outside gas in the hardening cavity gradually decreases with the distance from the upper opening position of the hardening cavity, enabling the green plant seedlings to be gradually hardened during the hardening process and reducing the mortality rate of the green plants.

[0009] The present invention is further configured as follows: an opening is formed on the side wall of the moving channel, and a partition block that separates the cultivation cavity and the hardening cavity and extends to the opening position of the moving channel is fixedly connected to the other side wall. A sealing block is fixedly provided on the end face of the partition block, and a "return"-shaped track groove is formed with the inner wall of the opening of the moving channel. A sealing soft block is slidably connected to the inner wall of the track groove and is sealedly arranged.

[0010] By adopting the above technical solution, the movement track of the moving plate is restricted by the track groove, and the moving plate can move between the cultivation cavity and the hardening cavity. At the same time, the sealing soft block can seal the gap between the track groove and the outside, ensuring that the cultivation cavity and the hardening cavity do not leak air and improving the cultivation effect of the green plants.

[0011] The present invention is further configured as follows: The power component includes a connecting block and a support shaft. One wall of the box body close to the track groove is fixedly provided with a power motor. A connecting block is coaxially connected to the output shaft of the power motor. A plurality of sliding grooves are formed on the outer surface of the connecting block and are annularly arranged with the output shaft of the power motor as the center. A first rod cylinder is slidably connected to the inner wall of the sliding groove. A second rod cylinder is slidably connected to the inner wall of the first rod cylinder. A connecting spring is fixedly connected between the inner wall of the sliding groove and the first rod cylinder, and between the inner wall of the first rod cylinder and the second rod cylinder respectively. One end of the second rod cylinder close to the box body is fixedly provided with a support shaft that passes through the track groove and is fixedly connected to the sealing soft block. One end of the support shaft located in the moving channel is rotatably connected to a moving plate that abuts against the inner wall of the moving channel.

[0012] By adopting the above technical solution, the power motor is used to drive the connecting block to rotate and drive the first rod cylinder and the second rod cylinder to rotate synchronously. The second rod cylinder drives the support shaft and the moving plate to rotate around the axis of the output shaft of the power motor. Among them, the support shaft passes through the sealing soft block and drives the sealing soft block to move in the track groove. The support shaft is restricted by the inner wall of the track groove. When displaced, relative sliding occurs between the connecting block, the first rod cylinder, and the second rod cylinder, so that the support shaft can drive the moving plate to move cyclically in the moving channel along the track of the track groove, completing power transmission, enabling the tissue culture and seedling hardening in the green plant cultivation to continue, reducing the labor intensity of workers, and using the moving plate to move towards the opening of the seedling hardening cavity to discharge the air in the seedling hardening cavity to the external environment, so that a large amount of external air cannot rush into the seedling hardening cavity and affect the seedlings, and a state of gradually decreasing external air concentration is formed between two adjacent moving plates in the seedling hardening cavity. Even when just cultivated, it prevents the external environment from affecting other seedlings in the cultivation box when taking out a single seedling, greatly increasing the survival rate of green plant cultivation.

[0013] The present invention is further configured as follows: The sealing assembly includes a plug that abuts against the upper end surface of the upper moving plate. An upwardly concave connecting groove that is slidably connected to the plug is formed on the top wall of the upper communication groove. The lower end of the plug is an inclined wall facing the seedling hardening cavity.

[0014] By adopting the above technical solution, by using the inclined wall at the lower end of the plug, when the moving plate moves, it can abut against the plug and drive the plug to move upward, thereby exposing the upper communication groove and enabling the moving plate to enter the cultivation cavity from the seedling hardening cavity. When the moving plate completely enters the cultivation cavity, the plug falls back under the influence of gravity and blocks the upper communication groove, so that the external air at the upper opening of the seedling hardening cavity can only pass through the seedling hardening cavity and flow into the cultivation cavity from the lower communication groove, ensuring the unidirectional flow of air and realizing that the external air concentration in the seedling hardening cavity gradually decreases in the direction away from the opening of the seedling hardening cavity.

[0015] The present invention is further configured such that: a plurality of adjustment components in the shape of "U" are provided through the inner wall at the connection between the seedling hardening cavity and the outside. The adjustment components are composed of a support block and a control block distributed vertically, and both extend into the seedling hardening cavity. The lower end of the control block and the upper end of the support block are inclined outward away from the seedling hardening cavity and themselves. The control block is fixedly connected to the outer surface of the box body through an insertion spring.

[0016] By adopting the above technical solution, when the moving plate drives the culture dish to rise in the seedling hardening cavity, the communication groove abuts against the inclined surface of the bottom wall of the control block and moves the control block out of the seedling hardening cavity. The control block drives the support block out of the seedling hardening cavity. The moving plate moves upward to the highest position and the culture dish is located above the support block. The culture dish abuts against the side wall of the seedling hardening cavity and disengages from the moving plate. When the moving plate moves towards the culture cavity, the support block is driven by the elastic force of the insertion spring to move into the seedling hardening cavity, and the support block is used to continuously support the culture dish. Thus, the culture dish that has completed seedling hardening can be collected at the opening position of the seedling hardening cavity, which is convenient for operation, reduces the technological process, and increases the working efficiency.

[0017] The present invention is further configured such that: a storage cavity recessed upward is provided on the top wall of the culture cavity, and an "L"-shaped support plate is provided through the side wall of the culture cavity away from the communication groove. The support plate separates the storage cavity from the culture cavity, and the height of its lower end is the same as the height of the bottom wall of the upper communication groove. Moreover, the thickness of the support plate is greater than the groove height of the upper communication groove. The support plate located outside the box body is fixedly connected to the box body side wall through a return spring.

[0018] By adopting the above technical solution, when the moving plate moves from the seedling hardening cavity to the culture cavity, the moving plate pushes the support plate out of the culture cavity and connects the storage cavity with the culture cavity, so that the culture dish in the storage cavity drops onto the moving plate. The moving plate drives the culture dish to continue to move downward. At the same time, the support plate is reset under the resilience of the return spring and separates the storage cavity from the culture cavity, and when it is reset, it abuts against the side surface of the culture dish on the moving plate to prevent the culture dish from being stuck and also prevent the continuous dropping of the culture dish in the storage cavity.

[0019] The present invention is further configured such that: a culture dish abuts against the upper end surface of the lower moving plate. A slide bar extending vertically is fixedly connected to the side wall of the culture cavity away from the seedling hardening cavity. Moreover, through grooves that are slidably connected to the slide bar and are hermetically arranged are provided through the outer surfaces of the moving plate and the culture dish.

[0020] By adopting the above technical solution, by using the sliding connection between the slide bar and the through groove, the space between two adjacent moving plates in the culture cavity is a sealed space. Then, the temperature and humidity in the space are controlled through the air holes to prevent the air flowing in from the opening of the seedling hardening cavity from affecting the cultivation and improve the cultivation effect.

[0021] The present invention is further configured such that: the height of the upper communication groove is the same as the thickness of the moving plate, the height of the lower communication groove is the same as the overall thickness of the moving plate and the communication groove, and the side wall of the communication groove close to the support plate is an inclined surface that is inclined downward from top to bottom and outward from inside to outside.

[0022] By adopting the above technical solution, by using the different heights of the upper and lower communication grooves, the upper communication groove can prevent the culture dish after seedling hardening from moving into the culture cavity, while the lower communication groove can allow the moving plate and the communication groove to move from the culture cavity to the seedling hardening cavity, completing the transfer of the culture dish during the cyclic movement of the moving plate, saving manpower.

[0023] The present invention is further configured such that: the moving plate is slidably connected to the inner side walls of the culture cavity and the seedling hardening cavity and is sealed.

[0024] By adopting the above technical solution, by using the setting that the moving plate is slidably connected to the inner walls of the culture cavity and the seedling hardening cavity, it can not only meet the sealing of the space in the seedling hardening cavity, but also use its inner wall to restrict the rotation of the moving plate, that is, when the support shaft drives the moving plate to move in a "return" - shaped trajectory, the culture dish always remains upright.

[0025] In summary, the present invention has the following beneficial effects:

[0026] First, by using the power motor to drive the connecting block, the first rod barrel, and the second rod barrel to rotate, and then driving the support shaft to move along the trajectory of the trajectory groove through the second rod barrel, the moving plate on the support shaft can drive the culture dish to move in the culture cavity and the seedling hardening cavity, continuously completing the cultivation and seedling hardening processes, reducing the process of taking out the green plants in the middle, and increasing production efficiency.

[0027] Second, by using the air holes to control parameters such as temperature and humidity in the culture cavity, and at the same time applying negative pressure of different times and intensities to the seedling hardening cavity through the lower air holes, and discharging the air in the seedling hardening cavity to the external environment through the movement of the moving plate, so as to realize that the air at the opening of the seedling hardening cavity continuously enters the seedling hardening cavity and is continuously pushed out by the moving plate, making the concentration of the external air in the seedling hardening cavity gradually decrease in the direction away from the opening of the seedling hardening cavity, resulting in a gradual increase in the exercise intensity of the green plant seedlings and a reduction in the mortality rate.

[0028] Third, by using the structural settings of the support plate, the control block, and the support block, while ensuring the sealing of the culture cavity and the seedling hardening cavity, the culture dish in the storage cavity can be placed on the upper end of the moving plate in the culture cavity, and the culture dish on the upper end of the moving plate in the seedling hardening cavity can be transferred to multiple support blocks, completing the automatic feeding and taking out of the culture dish. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic structural diagram of the present invention;

[0030] Figure 2 is a schematic cross-sectional view of the present invention;

[0031] Figure 3 For the present invention Figure 2 is a schematic structural view of part A in the present invention;

[0032] Figure 4 is a schematic structural view of the sealing block in the present invention;

[0033] Figure 5 is a schematic cross-sectional view of the first rod cylinder in the present invention;

[0034] Figure 6 is a schematic cross-sectional view of the connecting block in the present invention;

[0035] Figure 7 is a schematic structural view of the moving plate in the present invention;

[0036] Figure 8 is a schematic structural view of the control block in the present invention.

[0037] In the figure:

[0038] 11. Box body; 12. Cultivation cavity; 13. Hardening-off cavity; 14. Storage cavity; 15. Connecting block; 16. Slide bar; 17. First rod cylinder; 18. Second rod cylinder; 19. Support shaft; 20. Sealing soft block; 21. Trajectory groove; 22. Moving plate; 23. Culture dish; 24. Through groove; 25. Partition block; 26. Sealing block; 27. Control block; 28. Insertion spring; 29. Support plate; 30. Return spring; 31. Support block; 32. Communication groove; 33. Air hole; 34. Power motor; 35. Sliding groove; 36. Connecting spring; 37. Connecting groove; 38. Plug block. Detailed implementation manners

[0039] Next, the present invention will be described in detail in conjunction with the accompanying drawings in the embodiments of the present invention.

[0040] Embodiment:

[0041] This kind of seedling hardening device for green plants, as Figures 1 to 3As shown in the figure, it includes a box body 11, a moving plate 22 and a power component. A cultivation cavity 12 and a seedling hardening cavity 13 are arranged side by side in the box body 11, and their upper and lower positions are connected to each other to form a "return" - shaped moving channel. The power component drives a plurality of moving plates 22 to move in a cycle in the moving channel. A plurality of air holes 33 are provided on the inner wall of the cultivation cavity 12 to replace the air in the cultivation cavity 12 and provide a changing negative pressure to the seedling hardening cavity 13. The top wall of the seedling hardening cavity 13 is connected to the outside, and the air flow direction is opposite to the moving direction of the moving plate 22. The cultivation cavity 12 and the seedling hardening cavity 13 are connected through a communication groove 32 at the upper and lower sides to form a moving channel for the moving plate 22 to move. A sealing component that only allows the moving plate 22 to pass through is provided at their upper connection, and a "U" - shaped air flow channel composed of the seedling hardening cavity 13, the lower communication groove 32, and the cultivation cavity 12 is formed.

[0042] As Figures 2 to 4 shown, an opening is provided on the side wall of the moving channel, and a partition block 25 that separates the cultivation cavity 12 and the seedling hardening cavity 13 and extends to the opening position of the moving channel is fixedly connected to the other side wall. A sealing block 26 is fixedly provided on the end face of the partition block 25 and forms a "return" - shaped track groove 21 with the inner wall of the opening of the moving channel. A sealing soft block 20 is slidably connected to the inner wall of the track groove 21 and is sealed.

[0043] As Figure 1 、 Figure 4 、 Figure 5 and Figure 6 shown, the power component includes a connecting block 15 and a support shaft 19. A power motor 34 is fixedly provided on a wall of the box body 11 close to the track groove 21. A connecting block 15 is coaxially connected to the output shaft of the power motor 34. A plurality of sliding grooves 35 arranged in a ring with the output shaft of the power motor 34 as the center are provided on the outer surface of the connecting block 15. A first rod cylinder 17 is slidably connected to the inner wall of the sliding groove 35. A second rod cylinder 18 is slidably connected to the inner wall of the first rod cylinder 17. A connecting spring 36 is fixedly connected between the inner wall of the sliding groove 35 and the first rod cylinder 17, and between the inner wall of the first rod cylinder 17 and the second rod cylinder 18 respectively. A support shaft 19 that passes through the track groove 21 and is fixedly connected to the sealing soft block 20 is fixedly provided at one end of the second rod cylinder 18 close to the box body 11. One end of the support shaft 19 located in the moving channel is rotatably connected to a moving plate 22 that abuts against the inner wall of the moving channel.

[0044] As Figure 2 and Figure 3 shown, the sealing component includes a plug block 38 that abuts against the upper end face of the upper moving plate 22. A connecting groove 37 that is recessed upward and is slidably connected to the plug block 38 is provided on the top wall of the upper communication groove 32. The lower end of the plug block 38 is an inclined wall facing the seedling hardening cavity 13.

[0045] As Figure 2 and Figure 8As shown, the inner wall of the connecting part between the acclimatization chamber 13 and the outside is provided with a plurality of "U"-shaped adjusting components penetrating therethrough. The adjusting components are composed of a support block 31 and a control block 27 distributed up and down, and both extend into the acclimatization chamber 13. The lower end of the control block 27 and the upper end of the support block 31 are inclined outward away from the acclimatization chamber 13 and themselves. The control block 27 is fixedly connected to the outer surface of the box body 11 through an insertion spring 28.

[0046] As Figure 2 shown, the top wall of the cultivation chamber 12 is provided with a storage chamber 14 sunken upward, and the side wall of the cultivation chamber 12 far from the communication groove 32 is provided with an "L"-shaped support plate 29 penetrating therethrough. The support plate 29 separates the storage chamber 14 from the cultivation chamber 12, and the height of its lower end is the same as the bottom wall height of the upper communication groove 32. Moreover, the thickness of the support plate 29 is greater than the groove height of the upper communication groove 32. The support plate 29 located outside the box body 11 is fixedly connected to the side wall of the box body 11 through a return spring 30.

[0047] As Figure 2 and Figure 7 shown, a culture dish 23 abuts against the upper end surface of the lower moving plate 22. A sliding rod 16 extending up and down is fixedly connected to the side wall of the cultivation chamber 12 far from the acclimatization chamber 13. Moreover, through grooves 24 which are slidably connected to the sliding rod 16 and are hermetically arranged are provided through the outer surfaces of the moving plate 22 and the culture dish 23. The groove height of the upper communication groove 32 is the same as the thickness of the moving plate 22, and the groove height of the lower communication groove 32 is the same as the overall thickness of the moving plate 22 and the communication groove 32. The side wall of the communication groove 32 close to the support plate 29 is an inclined surface inclined downward from top to bottom and outward from inside to outside. The moving plate 22 is slidably connected to the inner side walls of the cultivation chamber 12 and the acclimatization chamber 13 and is hermetically arranged.

[0048] A plurality of culture dishes 23 are stacked and placed in the storage cavity 14 inside the box body 11. At this time, the support plate 29 is snapped into the culture cavity 12 to separate the storage cavity 14 from the culture cavity 12, ensuring that the culture dishes 23 will not fall into the culture cavity 12. Then, the power motor 34 is used to drive the connecting block 15 to rotate. The connecting block 15 drives the first rod cylinder 17 and the second rod cylinder 18 to rotate synchronously. The second rod cylinder 18 then drives the support shaft 19 and the moving plate 22 to rotate. Moreover, the support shaft 19 is restricted by the inner wall of the track groove 21. The connecting block 15, the first rod cylinder 17, and the second rod cylinder 18 are fixedly connected by a connecting spring 36 and can slide in the sliding groove 35 in a direction away from the axis of the power motor 34. Thus, the support shaft 19 can move unidirectionally along the "return" - shaped track of the track groove 21, that is, the power motor 34 drives the moving plate 22 to move cyclically in the culture cavity 12 and the seedling hardening cavity 13. Also, because the moving plate 22 is slidably connected to the inner walls of the culture cavity 12 and the culture cavity 12 when moving, that is, the moving plate 22 does not rotate in the culture cavity 12 and the seedling hardening cavity 13, the moving plate 22 always remains upright during movement. When the moving plate 22 moves from the seedling hardening cavity 13 into the culture cavity 12, the moving plate 22 moves horizontally from the upper communication groove 32 into the culture cavity 12 and pushes the support plate 29 out of the culture cavity 12. When the support plate 29 is completely removed from the culture cavity 12, the moving plate 22 is completely located in the culture cavity 12, and the culture dishes 23 in the storage cavity 14 lose the support of the support plate 29 and fall onto the moving plate 22. At this time, the moving plate 22 moves downward, and the culture dishes 23 move downward synchronously under the influence of gravity. When the moving plate 22 moves downward and separates from the left wall of the support plate 29, the support plate 29 moves leftward and resets under the influence of the elastic force of the return spring 30. At this time, the culture dishes 23 on the moving plate 22 have not completely left the moving track of the support plate 29, that is, the support plate 29 exerts pressure on the right end face of the culture dish 23. Using the inclined plane on the right end face of the culture dish 23, the support plate 29 will not get stuck with the culture dish 23 in the culture cavity 12 during resetting and ensures that one culture dish 23 moves synchronously with the moving plate 22, while the other culture dish 23 is supported by the support plate 29 and remains in the storage cavity 14. The moving plate 22 continues to move downward along the track of the track groove 21. By using the sliding connection between the sliding rod 16 on the side wall of the culture cavity 12 and the through - slot 24 and the sealing arrangement between the moving plate 22 and the inner walls of the culture cavity 12 and the seedling hardening cavity 13, the partition block 25 fixes the sealing block 26 and ensures the sealing of the culture cavity 12 and the seedling hardening cavity 13. Moreover, when the support shaft 19 moves, it synchronously drives the flexible sealing soft block 20 to move along the track of the track groove 21, keeping the track groove 21 sealed. Thus, the space between two adjacent moving plates 22 in the culture cavity 12 is in a sealed state. The air in this space is controlled by the air holes 33, and the air holes 33 are connected to the external air circulation system, thereby controlling the humidity, temperature, and pressure in this space and providing suitable conditions for the tissue culture of the plants in the culture dishes 23.When the moving plate 22 moves to the lowest position, it then moves leftward along the track of the track groove 21 and passes through the lower connecting groove 32 into the seedling hardening chamber 13. The moving plate 22 that enters the seedling hardening chamber 13 continues to move upward. At this time, the air in the seedling hardening chamber 13 passes through the lower connecting groove 32 and is communicated with the bottom space of the cultivation chamber 12. The spaces on both sides of the moving plate 22 are communicated through the through groove 24. And the top wall of the seedling hardening chamber 13 is connected to the outside, forming an air flow channel from the outside air to the bottom of the cultivation chamber 12. Then, different-time and -intensity negative pressures are provided to the seedling hardening chamber 13 through the air holes 33 at the bottom of the cultivation chamber 12, so that the outside air can pass through the seedling hardening chamber 13 and enter the bottom of the cultivation chamber 12, and then be discharged through the air holes 33. It can exercise the green plant seedlings cultivated on the moving plate 22 in the seedling hardening chamber 13. At the same time, the moving plate 22 moves upward in the seedling hardening chamber 13 in the opposite direction to the air flow direction, that is, it can discharge the air in the seedling hardening chamber 13 outward. Furthermore, the concentration of the outside air in the space between every two adjacent moving plates 22 is reduced when the outside air enters. That is, the farther away from the opening of the seedling hardening chamber 13, the lower the concentration of the outside air in the seedling hardening chamber 13. Thus, when the green plant seedlings have just completed cultivation, they can contact the air with a lower outside air concentration, preventing the temperature, humidity, and viruses of the outside air from affecting the green plant seedlings. Steadily increasing the resistance of the green plant seedlings can reduce the mortality rate. Also, the concentration of the outside air can be further controlled by controlling the magnitude of the negative pressure provided by the air holes 33, strengthening the control effect. And the "U"-shaped air flow channel can prevent the air flow from directly impacting the space between two adjacent moving plates 22 in the cultivation chamber 12. When the moving plate 22 moves to the upper position in the seedling hardening chamber 13, the culture dish 23 abuts against the lower end of the control block 27 and pushes the control block 27 out of the seedling hardening chamber 13. The control block 27 drives the support block 31 to move synchronously and out of the seedling hardening chamber 13. When the moving plate 22 moves upward to the highest position, the culture dish 23 is stuck in the opening position of the seedling hardening chamber 13. At this time, the support block 31 is located below the culture dish 23. When the moving plate 22 moves to the right, it abuts against the inclined wall of the blocking block 38 and pushes the blocking block 38 to move upward along the connecting groove 37, thereby exposing the upper connecting groove 32. When the moving plate 22 moves from the seedling hardening chamber 13 into the cultivation chamber 12, it not only pushes the support plate 29 out of the cultivation chamber 12, but also the support block 31 and the control block 27 are continuously in contact with the left wall of the moving plate 22 under the elastic force of the insertion spring 28, that is, the support block 31 and the control block 27 are reset and inserted into the seedling hardening chamber 13. And the culture dish 23 on the moving plate 22 is restricted by the upper connecting groove 32 and cannot pass through the connecting groove 32. The support block 31 supports the culture dish 23, completing the removal of the culture dish 23 on the moving plate 22. And the next moving plate 22 will push the previous culture dish 23 upward when it moves. Finally, multiple culture dishes 23 are stacked at the opening of the seedling hardening chamber 13, which is convenient for taking. When the moving plate 22 completely moves into the cultivation chamber 12, the blocking block 38 falls back under the influence of gravity and blocks the upper connecting groove 32, preventing the outside air from entering the cultivation chamber 12 through the upper connecting groove 32, realizing the one-way conduction of the air flow.,

[0049] The above are only the preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. Any technical solutions falling within the concept of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present invention should also be regarded as within the protection scope of the present invention.

Claims

1. A seedling hardening device for green plants, comprising a box body (11), a moving plate (22) and a power component, characterized in that: A cultivation chamber (12) and a seedling hardening chamber (13) are arranged side by side in the box body (11), and their upper and lower positions are interconnected to form a "return" - shaped moving channel. The power component drives a plurality of the moving plates (22) to move cyclically in the moving channel. A plurality of air holes (33) are formed in the inner wall of the cultivation chamber (12) to replace the air in the cultivation chamber (12) and provide a variable negative pressure to the seedling hardening chamber (13). The top wall of the seedling hardening chamber (13) is communicated with the outside, and the air flow direction is opposite to the moving direction of the moving plate (22). The cultivation chamber (12) and the seedling hardening chamber (13) are communicated through a communication groove (32) at the upper and lower sides, and a moving channel for the moving plate (22) to move is formed. A sealing component for only allowing the moving plate (22) to pass through is provided at the upper communication part, and a "U" - shaped air flow channel composed of the seedling hardening chamber (13), the lower communication groove (32), and the cultivation chamber (12) is formed. An opening is formed in the side wall of the moving channel, and a partition block (25) that separates the cultivation chamber (12) and the seedling hardening chamber (13) and extends to the opening position of the moving channel is fixedly connected to the other side wall. A sealing block (26) is fixedly provided on the end face of the partition block (25), and a "return" - shaped track groove (21) is formed with the inner wall of the opening of the moving channel. A sealing soft block (20) is slidably connected to the inner wall of the track groove (21) and is sealed. The power component includes a connecting block (15) and a support shaft (19). A power motor (34) is fixedly provided on a wall of the box body (11) close to the track groove (21). A connecting block (15) is coaxially connected to the output shaft of the power motor (34). A plurality of sliding grooves (35) are formed on the outer surface of the connecting block (15) and are annularly arranged with the output shaft of the power motor (34) as the center. A first rod cylinder (17) is slidably connected to the inner wall of the sliding groove (35). A second rod cylinder (18) is slidably connected to the inner wall of the first rod cylinder (17). A connecting spring (36) is fixedly connected between the inner wall of the sliding groove (35) and the first rod cylinder (17) and between the inner wall of the first rod cylinder (17) and the second rod cylinder (18) respectively. One end of the second rod cylinder (18) close to the box body (11) is fixedly provided with a support shaft (19) that passes through the track groove (21) and is fixedly connected to the sealing soft block (20). One end of the support shaft (19) located in the moving channel is rotatably connected to a moving plate (22) that abuts against the inner wall of the moving channel.

2. The acclimatization device for green plants according to claim 1, wherein: The sealing component includes a blocking block (38) that abuts against the upper end face of the upper moving plate (22). An upward - concave connecting groove (37) that is slidably connected to the blocking block (38) is formed on the top wall of the upper communication groove (32). The lower end of the blocking block (38) is an inclined wall facing the seedling hardening chamber (13).

3. The acclimatization device for green plants according to claim 2, characterized in that: The inner wall at the connection between the acclimatization cavity (13) and the outside is penetrated with a plurality of adjustment components in a "U" shape. The adjustment components are composed of a support block (31) and a control block (27) distributed vertically, and both extend into the acclimatization cavity (13). The lower end of the control block (27) and the upper end of the support block (31) are inclined outward away from the acclimatization cavity (13) and themselves. The control block (27) is fixedly connected to the outer surface of the box body (11) through an insertion spring (28).

4. A seedling hardening device for green plants according to claim 2, characterized in that: The top wall of the cultivation cavity (12) is provided with a storage cavity (14) sunken upward. And a support plate (29) in an "L" shape is penetrated through the side wall of the cultivation cavity (12) far from the communication groove (32). The support plate (29) separates the storage cavity (14) from the cultivation cavity (12), and the height of its lower end is the same as the bottom wall height of the upper communication groove (32). And the thickness of the support plate (29) is greater than the groove height of the upper communication groove (32). The support plate (29) on the outside of the box body (11) is fixedly connected to the side wall of the box body (11) through a return spring (30).

5. The acclimatization device for green plants according to claim 4, characterized in that: The upper end surface of the lower moving plate (22) abuts against a culture dish (23). A sliding rod (16) extending vertically is fixedly connected to the side wall of the cultivation cavity (12) far from the acclimatization cavity (13). And a through groove (24) that is slidably connected to the sliding rod (16) and is hermetically arranged is penetrated through the outer surfaces of the moving plate (22) and the culture dish (23).

6. The acclimatization device for green plants according to claim 5, wherein: And the groove height of the upper communication groove (32) is the same as the thickness of the moving plate (22). The groove height of the lower communication groove (32) is the same as the overall thickness of the moving plate (22) and the communication groove (32). The side wall of the communication groove (32) close to the support plate (29) is an inclined surface that is inclined downward and outward from top to bottom and from inside to outside.

7. A seedling hardening device for green plants according to claim 5, characterized in that: The moving plate (22) is slidably connected to the inner side walls of the cultivation cavity (12) and the acclimatization cavity (13) and is hermetically arranged.

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