A seedling raising device and method

Abstract

The application discloses a seedling cultivation device and method, and relates to the field of seedling cultivation equipment. The device comprises a box, a supporting plate for supporting seedlings is arranged in the box, a liquid storage area is formed at the lower side of the supporting plate, the liquid storage area is used for filling nutrient solution, a stirring rod is rotatably arranged in the liquid storage area, the stirring rod rotates in the horizontal direction, a plurality of stirring blades are arranged on the stirring rod at intervals, a ventilation groove is arranged in the stirring rod, air outlets are arranged on the stirring blades, the air outlets are communicated with the ventilation groove, the end of the stirring rod penetrates out of the box, the end of the stirring rod penetrating out of the box is connected with an air pipe through a rotary joint, the air pipe is communicated with the ventilation groove, and a driving assembly for driving the stirring rod to rotate is arranged on the box. The application helps to improve the utilization rate of the nutrient solution and ensure the growth of the seedlings.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of seedling raising equipment, in particular to a seedling raising device and method. BACKGROUND

[0002] The soilless culture refers to a culture method in which water, peat, forest leaf soil, vermiculite or other medium is used as the substrate of plant roots to fix the plants, and the plant roots can directly contact the nutrient solution.

[0003] The existing plastic cultivation box is provided with a supporting plate for supporting seedlings, a storage tank for storing nutrient solution is arranged below the supporting plate, a water inlet is formed at one end of the plastic cultivation box, and the water inlet is connected with a water pump for pumping the nutrient solution into the storage tank.

[0004] However, in actual use, the nutrient solutes in the nutrient solution will deposit after the nutrient solution is stored in the storage tank for a long time, which affects the absorption of the nutrient solution by the roots of the seedlings, and further affects the growth of the seedlings. SUMMARY

[0005] In order to improve the utilization rate of the nutrient solution and ensure the growth of the seedlings, the present application provides a seedling raising device and method.

[0006] The seedling raising device provided by the present application adopts the following technical scheme:

[0007] The seedling raising device comprises a box body, a supporting plate for supporting seedlings is arranged in the box body, a liquid storage area is formed on the lower side of the box body and is used for filling the nutrient solution, a stirring rod is rotatably arranged in the liquid storage area, the stirring rod rotates in the horizontal direction, a plurality of stirring blades are arranged on the stirring rod at intervals, an air passage is formed in the stirring rod, an air outlet is formed on each of the stirring blades, the air outlet is in communication with the air passage, the end portion of the stirring rod penetrates through the box body and is connected with an air pipe through a rotary joint, the air pipe is in communication with the air passage, and a driving assembly is arranged on the box body and is used for driving the stirring rod to rotate.

[0008] Through the above technical scheme, the seedlings are planted on the supporting plate, the roots of the seedlings extend into the liquid storage area, the liquid storage area is filled with the nutrient solution to provide nutrients for the growth of the seedlings, the driving assembly drives the stirring rod to rotate and drives the stirring blades to rotate, the nutrient solution is stirred to prevent the nutrient solutes from depositing, thereby ensuring the utilization rate of the nutrient solution and the growth of the seedlings, and the oxygen is introduced into the air passage through the air pipe, the oxygen enters the nutrient solution through the air outlet to provide oxygen for the seedlings and ensure the growth of the seedlings, and due to the rotation of the stirring blades, the oxygen can be quickly and uniformly mixed into the nutrient solution.

[0009] Preferably, the driving assembly comprises a driving motor, a first pulley, a second pulley and a belt, the driving motor is mounted on the box body, the first pulley is coaxially fixed on the output shaft of the driving motor, the second pulley is coaxially fixed on the stirring rod, and the belt is wound on the first pulley and the second pulley.

[0010] By adopting the above technical scheme, the driving motor operates, the first pulley rotates, the second pulley rotates through the belt, and the rotation of the stirring rod is realized.

[0011] Preferably, the box body is provided with a liquid supplement pipe, the liquid supplement pipe is communicated with the liquid storage area, a ball valve is mounted on the liquid supplement pipe, a valve rod for opening and closing the ball valve is rotatably arranged on the ball valve, a linkage gear is coaxially fixed on the valve rod, a sliding groove is formed in the outer wall of the box body, a linkage rack is slidably arranged in the sliding groove, the linkage rack is engaged with the linkage gear, a driving member for driving the linkage rack to slide is arranged in the box body, a return spring is mounted in the sliding groove, the length direction of the return spring is consistent with the sliding direction of the linkage rack, one end of the return spring is connected with the linkage rack, and the other end of the return spring is connected with the inner wall of the sliding groove.

[0012] By adopting the above technical scheme, during the growth of seedlings, the nutrient solution will be continuously reduced, that is, the liquid level of the nutrient solution will be lowered, and the supporting plate will be lowered. When the supporting plate is lowered, the driving member drives the linkage rack to slide, thereby driving the linkage gear to rotate, the valve rod rotates, and the ball valve is opened. At this time, the nutrient solution from the outside will be introduced into the liquid storage area through the liquid supplement pipe, thereby realizing automatic liquid supplement. During the liquid supplement process, the liquid level of the nutrient solution gradually rises, thereby driving the supporting plate to rise. At this time, under the action of the return spring, the linkage rack slides and resets, the linkage rack drives the linkage gear to reverse, the valve rod reverses and gradually closes the ball valve, and the liquid supplement is stopped.

[0013] Preferably, a stepped portion is formed in the inner wall of the box body, the liquid storage area is located in the area surrounded by the stepped portion, an installation groove is formed in the stepped portion of the box body, the supporting plate is made of wood material, the supporting plate floats on the nutrient solution, and the stepped portion limits the stroke of the supporting plate. A guide rod is arranged in the box body in the vertical direction, the guide rod is rotatably connected in the box body, the guide rod is located at the stepped portion, the lower end of the guide rod is located in the installation groove, and a plug-in groove is formed in the supporting plate and is in plug-in and sliding cooperation with the guide rod.

[0014] By adopting the above technical scheme, the supporting plate is made of wood material, the density of the wood material is less than water, and the supporting plate can float on the liquid surface of the nutrient solution, that is, the supporting plate will rise and fall with the change of the liquid level of the nutrient solution, and because the nutrient solution is in a stirring state, the nutrient solution in the liquid storage area is in a stirring state, if there is no guide rod, the supporting plate will shake with the fluctuation of the nutrient solution, which will affect the growth of the seedlings, therefore, the guide rod is used to limit the supporting plate, so as to ensure that the supporting plate always maintains a horizontal state.

[0015] Preferably, the end of the stirring rod extends into the mounting slot, and the end of the stirring rod is coaxially fixed with a first bevel gear, a connecting slot is formed in the vertical direction on the guide rod, and a second bevel gear is coaxially rotated on the guide rod, the second bevel gear is located below the first bevel gear, the inner ring of the second bevel gear is provided with a connecting block, the connecting block is inserted into the connecting slot and is in sliding fit in the vertical direction, a lifting piece is arranged in the guide rod to drive the connecting block to lift, the driving piece is arranged as a driving gear, the driving gear is coaxially fixed on the guide rod, the linkage rack is double-sided teeth, and the driving gear is engaged with the linkage rack.

[0016] By adopting the above technical scheme, when the liquid level of the nutrient solution gradually decreases, the supporting plate descends, at this time the lifting piece drives the connecting block to ascend, that is, the second bevel gear ascends and gradually engages with the first bevel gear, the first bevel gear drives the second bevel gear to rotate, that is, drives the guide rod to rotate, the guide rod drives the driving gear to rotate, the driving gear drives the linkage rack to slide, the linkage rack drives the linkage gear to rotate, and the opening of the ball valve is realized; after the liquid level of the nutrient solution rises, the supporting plate rises, the lifting piece drives the connecting block to descend, the second bevel gear descends and is separated from the first bevel gear, at this time, under the action of the return spring, the linkage rack is reset, and the linkage gear is reset, and the ball valve is closed.

[0017] Preferably, the lifting piece is arranged as a lifting rod, the lifting rod is fixedly connected with the connecting block, a lifting slot is formed in the vertical direction in the guide rod, the lifting rod slides in the lifting slot in the vertical direction, a rack part is formed on the side of the lifting rod, a connecting shaft is rotationally connected to the side of the guide rod in the horizontal direction, a push piece is hingedly connected to the connecting shaft through a torsional spring, when the supporting plate is in the rising state, the push piece abuts against the inner wall of the insertion slot, and the push piece is arranged in an inclined upward manner, and the end of the push piece is located on the upper side of the insertion slot; a gear part is formed on the push piece, and the gear part is engaged with the rack part; when the push piece rotates to the horizontal state, the first bevel gear is engaged with the second bevel gear.

[0018] By adopting the technical scheme, when the nutrient solution level drops, the supporting plate drops, the push piece on the guide rod rotates under the action of the torsion spring, and the push piece changes to a horizontal state, when the push piece rotates, the gear portion walks on the rack portion, that is, the lifting rod is driven to rise, the first bevel gear and the second bevel gear are engaged, the ball valve is opened, and the liquid supplementing action is performed; in actual use, when the push piece rotates from the inclined state to the horizontal state, the first bevel gear is just engaged with the second bevel gear; when the liquid supplementing is performed, the supporting plate rises, if the supporting plate immediately rises, the first bevel gear will immediately disengage from the second bevel gear, the ball valve is closed, and the liquid supplementing is stopped, that is, the following situation exists: when the nutrient solution level drops by a small distance, the ball valve is opened, the liquid supplementing is performed, the liquid supplementing is small, the supporting plate rises, and the ball valve is closed again, which causes the ball valve to be in a state of being continuously opened and closed; when the first bevel gear and the second bevel gear are engaged, that is, when the liquid supplementing is performed, the push piece is in a horizontal state, when the liquid supplementing is performed, the supporting plate has a rising trend, but the push piece temporarily blocks the supporting plate, that is, the supporting plate does not immediately rise, the rising distance of the supporting plate is smaller than the rising distance of the nutrient solution level, the depth of the supporting plate immersed in the nutrient solution is larger and larger, the buoyancy force received by the supporting plate is also larger and larger, when the buoyancy force reaches a certain value, the supporting plate can overcome the pressure of the push piece, drive the push piece to rotate, and then make the first bevel gear disengage from the second bevel gear, the ball valve is closed, and the liquid supplementing is stopped, in this way, the ball valve can be started only when the nutrient solution drops by a certain distance, and the ball valve can be closed only when the nutrient solution rises by a certain distance, the continuous opening and closing of the ball valve is avoided, and the service life of the ball valve is prolonged.

[0019] Preferably, a rain pipe is arranged on the upper side of the supporting plate, a water pump is arranged on the outer wall of the box, a first connecting pipe is connected to the water outlet of the water pump, the first connecting pipe is inserted into the rain pipe, a second connecting pipe is connected to the water inlet of the water pump, a third connecting pipe is connected to the end of the stirring rod, the third connecting pipe is connected to the stirring rod through a rotating joint, and the air pipe, the second connecting pipe and the third connecting pipe are connected through a three-way valve.

[0020] By adopting the technical scheme, the water pump operates, the liquid in the liquid storage area can be pumped into the air groove through the air outlet on the stirring blade, and then sequentially enters the three-way valve through the third connecting pipe, the second connecting pipe and the first connecting pipe, and finally enters the rain pipe, is sprayed from the rain pipe, can be used for wetting the seedlings, can keep the surface of the seedlings wet, and is more ornamental. In addition, by adjusting the opening direction of the three-way valve, the air pipe and the third connecting pipe can be connected to supply oxygen to the liquid storage area, and the switching between rain and oxygen supply can be realized.

[0021] A seedling cultivation method, the seedling cultivation device is used, and the steps are as follows:

[0022] S1: placing the seedlings on the supporting plate;

[0023] S2: appropriate amount of nutrient solution is introduced into the storage area of the box;

[0024] S3: the stirring rod rotates, and the stirring blade disturbs the nutrient solution to prevent the deposition of solutes in the nutrient solution

[0025] Preferably, the supporting plate floats on the nutrient solution, and the change of the liquid level of the nutrient solution realizes the lifting and lowering of the supporting plate. When the supporting plate is lowered, the ball valve is opened to supplement the nutrient solution into the storage area. When the supporting plate is raised, the ball valve is closed to stop the supplement of the nutrient solution. When the supporting plate is lowered, the toggle will rotate to the horizontal state to generate a downward pressure on the supporting plate. During the supplement of the nutrient solution, the supporting plate will not immediately rise. When the buoyancy of the supporting plate is sufficient to overcome the force of the toggle, the supporting plate will rise and drive the toggle to rotate, so as to close the ball valve and stop the supply of the nutrient solution.

[0026] In summary, the present application has at least one of the following beneficial technical effects:

[0027] 1. The rotation of the stirring rod in the nutrient solution disturbs the nutrient solution by the stirring blade, which helps to prevent the deposition of solutes, that is, helps to improve the utilization rate of the nutrient solution, ensures the growth of seedlings, and the gas is discharged from the gas outlet of the stirring blade to provide oxygen for the growth of seedlings. Due to the rotation of the stirring blade, oxygen is also uniformly introduced into the nutrient solution.

[0028] 2. The supporting plate floats on the liquid surface of the nutrient solution. When the liquid level gradually decreases during the consumption and evaporation of the nutrient solution, the supporting plate is lowered. During the lowering of the supporting plate, the toggle will rotate until the toggle rotates to the horizontal state. During the rotation of the toggle, the lifting rod is raised by the meshing of the gear part and the rack part, the second bevel gear is raised and engaged with the first bevel gear, the first bevel gear drives the second bevel gear to rotate, that is, the guide rod is rotated, the driving gear on the guide rod is rotated, the driving gear drives the linkage rack to rotate, and the linkage rack drives the linkage gear to rotate, so as to open the ball valve and supplement the nutrient solution. During the supplement of the nutrient solution, the supporting plate will have a rising trend with the rising of the liquid level of the nutrient solution, but the toggle will temporarily block the supporting plate, that is, the supporting plate will not immediately rise. The rising distance of the supporting plate will be less than the rising distance of the liquid level of the nutrient solution. The depth of the supporting plate immersed in the nutrient solution will become larger and larger, and the buoyancy will also become larger and larger. When the buoyancy reaches a certain value, the supporting plate can overcome the pressure of the toggle, drive the toggle to rotate, and then make the first bevel gear and the second bevel gear disengage, so as to close the ball valve and stop the supply of the nutrient solution. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the present application;

[0030] Figure 2 It is a schematic diagram of the cross-sectional structure of the embodiment of the present application;

[0031] Figure 3It is a cross-sectional structure schematic view of the embodiment of the application, mainly embodying the structure of the linkage rack;

[0032] Figure 4 It is a cross-sectional structure schematic view of the guiding rod in the embodiment of the application, mainly embodying the structure of the push piece.

[0033] The figure mark: 1, the box body; 11, the liquid storage area; 12, the step part; 13, the installation groove; 14, the air pipe; 2, the supporting plate; 21, the plug-in slot; 3, the stirring rod; 31, the stirring blade; 311, the air outlet; 32, the air passage; 33, the first bevel gear; 4, the driving assembly; 41, the driving motor; 42, the first pulley; 43, the second pulley; 44, the belt; 5, the liquid supplement pipe; 51, the ball valve; 52, the valve rod; 53, the linkage gear; 6, the sliding slot; 61, the sliding groove; 62, the reset spring; 7, the linkage rack; 71, the sliding block; 8, the guiding rod; 81, the connecting groove; 82, the second bevel gear; 821, the connecting block; 83, the lifting groove; 84, the connecting shaft; 85, the push piece; 851, the gear part; 9, the driving gear; 10, the lifting rod; 101, the rack part; 20, the deluge pipe; 30, the water pump; 301, the first connecting pipe; 302, the second connecting pipe; 40, the third connecting pipe; 50, the three-way valve. DETAILED DESCRIPTION

[0034] The following will be combined with the accompanying Figures 1-4 The application is further described in detail.

[0035] The embodiment of the application discloses a seedling cultivation device.

[0036] Reference Figure 1 And Figure 2 The seedling cultivation device comprises a box body 1, a supporting plate 2 for supporting seedlings is arranged in the box body 1, a liquid storage area 11 is formed at the lower side of the supporting plate 2, the liquid storage area 11 is filled with nutrient solution, the nutrient solution is supplied to the seedlings, a stirring rod 3 is rotationally arranged in the liquid storage area 11 of the box body 1, the stirring rod 3 rotates along the horizontal direction, a plurality of stirring blades 31 are arranged on the stirring rod 3 at intervals, and a driving assembly 4 for driving the stirring rod 3 to rotate is arranged on the box body 1; an air passage 32 is formed in the stirring rod 3 along the length direction of the stirring rod 3, an air outlet 311 is formed in the end of the stirring blade 31 away from the stirring rod 3, the air outlet 311 is connected with the air passage 32, the end of the stirring rod 3 penetrates out of the box body 1, the end of the stirring rod 3 is connected with an air pipe 14 through a rotary joint, and the air pipe 14 is communicated with the air passage 32.

[0037] When the seedlings are planted in the tray 2, the roots of the seedlings extend into the nutrient solution, the nutrient solution provides nutrients for the seedlings, the driving assembly 4 drives the stirring rod 3 to rotate, the stirring blade 31 rotates accordingly, the nutrient solution is disturbed, the deposition of solutes in the nutrient solution is prevented, the uniform distribution of nutrients in the nutrient solution is ensured, the utilization rate of the nutrient solution is ensured, the growth of the seedlings is ensured, and oxygen is introduced into the ventilation groove 32 through the air pipe 14, the oxygen enters the nutrient solution from the air outlet 311, and sufficient oxygen is provided for the growth of the seedlings. When the oxygen is sprayed from the air outlet 311, the oxygen will be distributed more quickly and uniformly in the nutrient solution due to the rotation of the stirring blade 31.

[0038] The inner wall of the box body 1 is provided with a stepped portion 12, the liquid storage area 11 is located in the area surrounded by the stepped portion 12, and the box body 1 is provided with a mounting groove 13 in the stepped portion 12; the driving assembly 4 includes a driving motor 41, a first pulley 42, a second pulley 43 and a belt 44, both ends of the stirring rod 3 are arranged in the mounting groove 13, and the end connected with the air pipe 14 passes through the mounting groove 13 and is arranged out of the box body 1, the driving motor 41 is fixedly installed in the mounting groove 13, the first pulley 42, the second pulley 43 and the belt 44 are located in the mounting groove 13, the first pulley 42 is coaxially fixed on the output shaft of the driving motor 41, the second pulley 43 is coaxially fixed on the stirring rod 3, the belt 44 is arranged on the first pulley 42 and the second pulley 43, and the diameter of the first pulley 42 is smaller than that of the second pulley 43. The driving motor 41 operates, the first pulley 42 rotates, the second pulley 43 is driven to rotate through the belt 44, and the rotation of the stirring rod 3 is realized.

[0039] With reference to Figure 2 and Figure 3The outer wall of the box body 1 is provided with a liquid supplement pipe 5, the liquid supplement pipe 5 communicates with the liquid storage area 11 through the installation groove 13, the other end of the liquid supplement pipe 5 communicates with the external nutrient liquid supplement device, the liquid supplement pipe 5 is provided with a ball valve 51, the ball valve 51 is provided with a valve rod 52 rotatingly arranged thereon, the valve rod 52 is a component provided with each ball valve 51, the valve rod 52 of the traditional ball valve 51 is rotated through a hand wheel to realize the opening and closing of the ball valve 51, in the application, the valve rod 52 is coaxially fixed with a linkage gear 53, the linkage gear 53 is rotated to replace the hand wheel to control the opening and closing of the ball valve 51. The outer wall of the box body 1 is provided with a sliding groove 6, the box body 1 is slidingly connected with a linkage rack 7 in the sliding groove 6, the linkage rack 7 slides along the horizontal direction, the linkage rack 7 and the linkage gear 53 are engaged, both ends of the linkage rack 7 are integrally formed with a sliding block 71, both end walls of the sliding groove 6 are provided with a sliding groove 61, the two sliding blocks 71 and the two sliding grooves 61 are one-to-one corresponding, the sliding block 71 and the sliding groove 61 are inserted and slidingly matched, the box body 1 is provided with a reset spring 62 in one of the sliding grooves 61, the length direction of the reset spring 62 is consistent with the sliding direction of the linkage rack 7, one end of the reset spring 62 is connected with the sliding block 71, the other end of the reset spring 62 is connected with the inner wall of the sliding groove 61. The box body 1 is provided with a driving member for driving the linkage rack 7 to slide.

[0040] During the growth of the seedlings, the seedlings absorb the nutrient liquid, and the nutrient liquid also evaporates, so the nutrient liquid gradually decreases, that is, the liquid level of the nutrient liquid gradually decreases, when the liquid level of the nutrient liquid decreases, the driving member drives the linkage rack 7 to slide, and then drives the linkage gear 53 to rotate, when the linkage gear 53 rotates, the ball valve 51 is opened through the valve rod 52, at this time, the external nutrient liquid enters the liquid storage area 11 from the liquid supplement pipe 5 to perform the liquid supplement action. When the nutrient liquid supplement is completed, under the action of the reset spring 62, the linkage rack 7 is reset, and drives the linkage gear 53 to rotate and reset, the ball valve 51 is closed, and the liquid supplement is stopped.

[0041] The supporting plate 2 is made of wood material, because the density of the wood material is small, so the supporting plate 2 floats on the liquid surface of the nutrient liquid, so when the liquid level of the nutrient liquid rises or falls, the supporting plate 2 rises or falls accordingly, the stepped portion 12 limits the falling stroke of the supporting plate 2, the box body 1 is provided with a guide rod 8 along the vertical direction, the lower end of the guide rod 8 extends into the installation groove 13, the guide rod 8 is rotatably connected with the stepped portion 12 through a bearing, the supporting plate 2 is provided with an insertion groove 21 which is inserted and slidingly matched with the guide rod 8. Because the stirring blade 31 disturbs the nutrient liquid, the nutrient liquid is always in a flowing state, the liquid surface of the nutrient liquid is irregular, if there is no guide rod 8, in the process of the flowing of the nutrient liquid, the supporting plate 2 swings, which affects the growth state of the seedlings, the guide rod 8 limits the supporting plate 2, which can ensure that the supporting plate 2 is always in a horizontal state, and then ensures the growth of the seedlings.

[0042] Referring to Figure 2 andFigure 4 The end of the stirring rod 3 away from the second pulley 43 is located in the mounting groove 13, and a first bevel gear 33 is coaxially fixed to the end of the stirring rod 3. A connecting groove 81 is vertically formed in the guide rod 8. A second bevel gear 82 is sleeved on the guide rod 8, and the second bevel gear 82 is located below the first bevel gear 33. The inner ring of the second bevel gear 82 is fixedly connected with a connecting block 821. The connecting block 821 is inserted into the connecting groove 81 and is in sliding fit in the vertical direction. Through the cooperation of the connecting block 821 and the connecting groove 81, the second bevel gear 82 and the guide rod 8 are coaxially rotated, and the two are in sliding fit. The lifting rod 10 is provided with a lifting piece for driving the connecting block 821 to lift. The driving piece is a driving gear 9 coaxially fixed to the guide rod 8. The linkage rack 7 is double-sided teeth. The driving gear 9 is engaged with the side of the linkage rack 7 away from the linkage gear 53.

[0043] When the amount of the nutrient solution gradually decreases in the use process, the liquid level also continuously decreases, and the supporting plate 2 is lowered. When the supporting plate 2 is lowered, the lifting piece drives the connecting block 821 to rise, so that the second bevel gear 82 rises and gradually engages with the first bevel gear 33. The first bevel gear 33 drives the second bevel gear 82 to rotate, that is, drives the guide rod 8 to rotate. The guide rod 8 drives the driving gear 9 to rotate. The driving gear 9 drives the linkage gear 53 to rotate through the linkage rack 7, so as to open the ball valve 51 and perform the liquid supplementing action. When the nutrient solution is supplemented, the supporting plate 2 is also gradually raised. The lifting piece drives the connecting block 821 to descend. The second bevel gear 82 descends and is disengaged from the first bevel gear 33. Under the action of the return spring 62, the linkage rack 7 is reset, and the linkage gear 53 is reset. The ball valve 51 is closed, and the liquid supply is stopped.

[0044] The lifting piece is a lifting rod 10. The guide rod 8 is vertically provided with a lifting groove 83. The lifting rod 10 is in vertical sliding fit in the lifting groove 83. The lifting rod 10 is fixedly connected with the connecting block 821. The side of the guide rod 8 is rotatably connected with a connecting shaft 84 in the horizontal direction. The rotation axis of the connecting shaft 84 is horizontal. A push piece 85 is hingedly connected to the connecting shaft 84 through a torsional spring. The push piece 85 is provided with a gear portion 851. The side of the lifting rod 10 is provided with a rack portion 101. The rack portion 101 is engaged with the gear portion 851. When the liquid level of the nutrient solution is in a high position, that is, the supporting plate 2 is in a raised state. At this time, the push piece 85 abuts against the inner wall of the insertion groove 21, and the push piece 85 is obliquely upwardly arranged. The upper end of the push piece 85 is located on the upper side of the insertion groove 21. When the liquid level of the nutrient solution is in a low position, that is, the supporting plate 2 is in a lowered state. At this time, the push piece 85 is rotated from the inclined state to the horizontal state. The first bevel gear 33 and the second bevel gear 82 are just engaged.

[0045] The liquid level of the nutrient solution gradually decreases during use, and the supporting plate 2 is lowered accordingly. When the supporting plate 2 is lowered, the push piece 85 will rotate under the action of the torsion spring. The push piece 85 will rotate from the inclined state to the horizontal state. When the push piece 85 rotates, the gear part 851 moves on the rack part 101 and drives the lifting rod 10 to slide upward, that is, the second bevel gear 82 slides upward and gradually meshes with the second bevel gear 82. Then the first bevel gear 33 drives the guide rod 8 to rotate through the second bevel gear 82. The guide rod 8 drives the drive gear 9 to rotate. The drive gear 9 drives the linkage gear 53 to rotate through the linkage rack 7, thereby opening the ball valve 51 to perform the liquid supplementing operation. During the liquid supplementing process, the liquid level of the nutrient solution gradually rises, and the buoyancy of the nutrient solution tends to make the supporting plate 2 rise. However, under the action of the push piece 85, the supporting plate 2 will not easily rise. That is, during the liquid supplementing process, although the liquid level of the nutrient solution gradually rises, the supporting plate 2 will not immediately rise at the beginning. The depth of the supporting plate 2 immersed in the nutrient solution becomes larger and larger, and the buoyancy acting on the supporting plate 2 also becomes larger and larger. When the buoyancy is sufficient to overcome the pressure of the push piece 85, the supporting plate 2 rises and drives the push piece 85 to rotate. The lifting rod 10 descends, and the first bevel gear 33 and the second bevel gear 82 are disengaged. Under the action of the return spring 62, the linkage rack 7 is reset, that is, the linkage gear 53 is reset, the ball valve 51 is closed, and the liquid supply is stopped. If there is no pressure of the push piece 85 on the supporting plate 2 during the liquid supplementing process, the supporting plate 2 will immediately rise with the rise of the liquid level of the nutrient solution, and the lifting rod 10 will also immediately descend, resulting in the separation of the first bevel gear 33 and the second bevel gear 82 and the stop of the liquid supply. When the liquid level of the nutrient solution decreases, the ball valve 51 is opened again. In this case, the ball valve 51 is in a state of being continuously opened and closed, which affects the service life of the ball valve 51. In the present application, the push piece 85 plays a buffering and time-delaying role in the rise of the supporting plate 2, so that the ball valve 51 can be closed only after a large amount of nutrient solution is supplemented.

[0046] With reference to Figure 1 and Figure 2 , the rain pipe 20 is arranged on the upper side of the supporting plate 2, the water pump 30 is arranged on the outer wall of the box body 1, the outlet of the water pump 30 is connected with the first connecting pipe 301, the first connecting pipe 301 is arranged vertically, the end of the rain pipe 20 is insertedly connected with the first connecting pipe 301, and the rain pipe 20 can rotate on the first connecting pipe 301. The inlet of the water pump 30 is provided with the second connecting pipe 302, the end of the stirring rod 3 is connected with the third connecting pipe 40, the third connecting pipe 40 is connected with the end of the stirring rod 3 through a rotary joint, the air pipe 14, the second connecting pipe 302 and the third connecting pipe 40 are connected through the three-way valve 50, and the three-way valve 50 can control the communication between the air pipe 14 and the third connecting pipe 40 and the communication between the second connecting pipe 302 and the third connecting pipe 40.

[0047] When the three-way valve 50 is controlled to make the air pipe 14 and the third connecting pipe 40 communicate, oxygen can be supplied to the liquid storage area 11 through the air pipe 14 at this time, when the three-way valve 50 is controlled to make the third connecting pipe 40 and the third connecting pipe 40 communicate, the water pump 30 is operated, the liquid in the liquid storage area 11 can be sucked into the aeration groove 32 through the air outlet 311 of the stirring blade 31, and then pass through the third connecting pipe 40, the second connecting pipe 302 and the first connecting pipe 301, and finally sprayed out from the sprinkler pipe 20 to wet the seedlings, and the ornamental is higher.

[0048] The implementation principle of the seedling cultivation device in the embodiment of the application is as follows: the seedlings are planted on the supporting plate 2, the rotation of the stirring blade 31 disturbs the nutrient solution, prevents the deposition of solutes, and thus helps to improve the utilization rate of the nutrient solution and ensure the growth of the seedlings; during the cultivation process, the nutrient solution is consumed, the liquid level gradually decreases, and the supporting plate 2 also decreases; during the decreasing process of the supporting plate 2, the paddle 85 rotates until the paddle 85 is in a horizontal state; during the rotation of the paddle 85, the lifting rod 10 rises through the meshing of the gear part 851 and the rack part 101, drives the second bevel gear 82 to rise and mesh with the first bevel gear 33, drives the second bevel gear 82 to rotate through the first bevel gear 33, that is, drives the guide rod 8 to rotate, drives the gear 9 on the guide rod 8 to rotate, drives the linkage rack 7 to rotate through the gear 9, and drives the linkage gear 53 to rotate through the linkage rack 7, so as to open the ball valve 51 and supply the liquid; during the liquid supply process, the supporting plate 2 has a rising trend with the rising of the liquid level of the nutrient solution, but the paddle 85 temporarily blocks the supporting plate 2, that is, the supporting plate 2 does not immediately rise, the rising distance of the supporting plate 2 is smaller than the rising distance of the liquid level of the nutrient solution, the depth of the supporting plate 2 immersed in the nutrient solution is larger and larger, and the buoyancy of the supporting plate 2 is also larger and larger; when the buoyancy reaches a certain value, the supporting plate 2 can overcome the pressure of the paddle 85, drives the paddle 85 to rotate, and then the first bevel gear 33 and the second bevel gear 82 are disengaged, the ball valve 51 is closed, and the liquid supply is stopped.

[0049] The embodiment of the application also discloses a seedling cultivation method, which adopts the seedling cultivation device and has the following steps.

[0050] S1: placing the seedlings on the supporting plate 2;

[0051] S2: supplying appropriate nutrient solution into the liquid storage area 11 of the box body 1;

[0052] S3: rotating the stirring rod 3, and disturbing the nutrient solution through the stirring blade 31 to prevent the deposition of solutes in the nutrient solution.

[0053] The tray 2 floats on the nutrient solution, the change of the liquid level of the nutrient solution realizes the lifting and lowering of the tray 2, when the tray 2 lowers, the ball valve 51 opens, liquid is supplemented into the liquid storage area 11, when the tray 2 rises, the ball valve 51 closes, the liquid supplement is stopped; when the tray 2 lowers, the push piece 85 rotates to the horizontal state, the downward pressure is generated on the tray 2, during the liquid supplement process, the tray 2 does not immediately rise, when the buoyancy of the tray 2 is enough to overcome the force of the push piece 85, the tray 2 rises and drives the push piece 85 to rotate, the closing of the ball valve 51 is realized, and the liquid supply is stopped.

[0054] The above are the preferred embodiments of the present application, and do not limit the protection scope of the present application, therefore: all equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A seedling cultivation device, characterized in that: The device includes a box body (1), inside which is a tray (2) for supporting seedlings. A liquid storage area (11) is formed on the lower side of the tray (2) of the box body (1), which is used to fill with nutrient solution. A stirring rod (3) is rotatably mounted inside the liquid storage area (11) of the box body (1). The stirring rod (3) rotates horizontally, and several stirring blades (31) are spaced apart on the stirring rod (3). The stirring rod (3) has openings... A ventilation groove (32) is provided, and an air outlet (311) is provided on each of the stirring blades (31). The air outlet (311) is connected to the ventilation groove (32). The end of the stirring rod (3) extends out of the box body (1), and the end of the stirring rod (3) extending out of the box body (1) is connected to the air pipe (14) through a rotary joint. The air pipe (14) is connected to the ventilation groove (32). A drive assembly (4) for driving the stirring rod (3) to rotate is provided on the box body (1). A replenishment pipe (5) is installed on the box (1), the replenishment pipe (5) is connected to the liquid storage area (11), a ball valve (51) is installed on the replenishment pipe (5), and a valve stem (52) for controlling the opening and closing of the ball valve (51) is rotatably provided on the ball valve (51). A linkage gear (53) is coaxially fixed on the valve stem (52). A sliding groove (6) is opened on the outer wall of the box (1), and a linkage rack (7) is slidably provided in the sliding groove (6) along the horizontal direction in the box (1). The linkage rack (7) meshes with the linkage gear (53). A guide rod (8) is provided in the box (1) along the vertical direction, and the guide rod (8) is rotatably connected in the box (1). The guide rod (8) is located at the step (12), and the lower end of the guide rod (8) is located in the mounting groove (13). The tray (2) is provided with a plug-in groove (21) that is plugged into and slidably engaged with the guide rod (8). The end of the stirring rod (3) extends into the mounting groove (13), and the end of the stirring rod (3) is coaxially fixed with a first bevel gear (33). A connecting groove (81) is provided on the guide rod (8) along the vertical direction. A second bevel gear (82) is coaxially rotated on the guide rod (8). The second bevel gear (82) is located below the first bevel gear (33). A connecting block (821) is provided on the inner ring of the second bevel gear (82). The connecting block (821) is inserted into the connecting groove (81) and forms a sliding fit in the vertical direction. A lifting component is provided in the guide rod (8) to drive the connecting block (821) to rise and fall. The driving component is a driving gear (9). The driving gear (9) is coaxially fixed on the guide rod (8). The linkage rack (7) is a double-sided tooth. The driving gear (9) meshes with the linkage rack (7). The lifting component is configured as a lifting rod (10), which is fixedly connected to the connecting block (821). A lifting groove (83) is provided in the guide rod (8) along the vertical direction. The lifting rod (10) slides in the lifting groove (83) along the vertical direction. A rack portion (101) is formed on the side of the lifting rod (10). A connecting shaft (84) is rotatably connected to the side of the guide rod (8) along the horizontal direction. A lever is hinged to the connecting shaft (84) by a torsion spring. (85) When the pallet (2) is in the rising state, the paddle (85) abuts against the inner wall of the insertion groove (21), and the paddle (85) is inclined upward, with the end of the paddle (85) located on the upper side of the insertion groove (21); a gear part (851) is formed on the paddle (85), and the gear part (851) meshes with the rack part (101); when the paddle (85) rotates to the horizontal state, the first bevel gear (33) meshes with the second bevel gear (82).

2. The seedling cultivation device according to claim 1, characterized in that: The drive assembly (4) includes a drive motor (41), a first pulley (42), a second pulley (43), and a belt (44). The drive motor (41) is mounted on the housing (1). The first pulley (42) is coaxially fixed on the output shaft of the drive motor (41). The second pulley (43) is coaxially fixed on the stirring rod (3). The belt (44) is wound around the first pulley (42) and the second pulley (43).

3. The seedling cultivation device according to claim 1, characterized in that: The housing (1) is provided with a driving component for the sliding of the linkage rack (7). The housing (1) is located in the sliding groove (6) and a return spring (62) is installed. The length direction of the return spring (62) is consistent with the sliding direction of the linkage rack (7). One end of the return spring (62) is connected to the linkage rack (7), and the other end of the return spring (62) is connected to the inner wall of the sliding groove (6).

4. The seedling cultivation device according to claim 3, characterized in that: The inner wall of the box (1) is formed with a stepped section (12), the liquid storage area (11) is located in the area enclosed by the stepped section (12), the box (1) is formed with an installation groove (13) in the stepped section (12), the tray (2) is made of wood, the tray (2) floats on the nutrient solution, and the stepped section (12) limits the downward stroke of the tray (2).

5. The seedling cultivation device according to claim 1, characterized in that: The box (1) is equipped with a rain pipe (20) on the upper side of the tray (2). A water pump (30) is installed on the outer wall of the box (1). A first connecting pipe (301) is connected to the outlet of the water pump (30). The first connecting pipe (301) and the rain pipe (20) are plugged into each other. A second connecting pipe (302) is connected to the inlet of the water pump (30). A third connecting pipe (40) is connected to the end of the stirring rod (3). The third connecting pipe (40) is connected to the stirring rod (3) through a rotary joint. The air pipe (14), the second connecting pipe (302) and the third connecting pipe (40) are connected by a three-way valve (50).

6. A seedling cultivation method, characterized in that: Using the seedling cultivation device according to any one of claims 1-5, the steps are as follows: S1: Place the seedlings on the tray (2); S2: Introduce an appropriate amount of nutrient solution into the liquid storage area (11) of the box (1); S3: The stirring rod (3) rotates and the stirring blade (31) disturbs the nutrient solution to prevent the solute in the nutrient solution from settling.

7. The seedling cultivation method according to claim 6, characterized in that: The tray (2) floats on the nutrient solution. The change in the liquid level of the nutrient solution causes the tray (2) to rise and fall. When the tray (2) falls, the ball valve (51) opens to replenish the liquid into the storage area (11). When the tray (2) rises, the ball valve (51) closes to stop replenishing the liquid. When the tray (2) falls, the lever (85) will rotate to a horizontal state, which will exert downward pressure on the tray (2). During the replenishment process, the tray (2) will not rise immediately. When the buoyancy of the tray (2) is sufficient to overcome the force of the lever (85), the tray (2) will rise and drive the lever (85) to rotate, thereby closing the ball valve (51) and stopping the liquid supply.

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