A plant hydroponic seedling raising device

Abstract

The present invention relates to the technical field of plant hydroponics, and specifically discloses a plant hydroponics seedling raising device, comprising a base cavity arranged in sequence from bottom to top, an air bag assembly arranged in the base cavity, a receiving plate arranged on the air bag assembly and capable of being clamped with the base cavity, a frame body with an inner diameter equal to an outer diameter of the receiving plate, a seedling root fixing piece arranged in the frame body for providing support force for the seedling root system, and a seedling fixing piece detachably connected to the frame body for fixing the non-root part of the seedling; a liquid inlet and a liquid outlet with a height difference are respectively arranged on both sides of the frame body, the receiving plate can slide in the frame body and the sliding height shall not be higher than the setting height of the liquid inlet, and the device solves the problem that the traditional plant hydroponics seedling raising device cannot solve the problem that the liquid fluctuation caused by changing the nutrient solution acts on the seedling root system, causing the seedling root system to be crooked.

Description

Technical Field

[0001] The present application relates to the technical field of plant hydroponics, and specifically discloses a seedling raising device for plant hydroponics. Background Art

[0002] Plant hydroponics is a soilless cultivation technology, the core of which is to allow the roots of plants to be directly immersed in a solution rich in various nutrients, thereby providing the water and nutrients needed by the plants;

[0003] Core principle: The principle of plant hydroponics is to use the mineral elements in the nutrient solution to replace the nutrients in the soil, and to meet the growth needs of plants by artificially controlling environmental conditions;

[0004] A common plant hydroponic seedling raising device is a hydroponic tank, which is provided with a liquid replacement component. The core is the use of a pump. The liquid replacement component is used to replace and substitute the nutrient solution, and then a mounting tank is set to place the seedlings, so that the seedlings are in contact with the nutrient solution to help the seedlings grow;

[0005] The above is a common and universal plant hydroponic seedling raising device;

[0006] The current problems are: there is a lack of structure for fixing the roots of plant seedlings, and the vertical growth of seedlings cannot be guaranteed. Secondly, the existing structure for fixing the roots of plant seedlings has little effect, especially when using a liquid replacement component. When using the liquid replacement component, whether it is inputting or discharging nutrient solution, it will cause fluctuations in the liquid. The above fluctuations seem small, but because the nutrient solution has a certain replacement frequency, the fluctuations caused by liquid replacement will continuously impact the seedlings in the long-term accumulation, causing the seedlings to tilt. The existing structure for fixing the roots of plant seedlings often has an action point at the upper part of the seedling root system, and the above-mentioned seedling tilt occurs at the lower part of the root system. Therefore, this will cause the existing structure for fixing the roots of plant seedlings to have little effect, and ultimately cause the seedlings to grow crookedly, affecting the growth of the seedlings. In view of this, the inventor proposes a seedling raising device for plant hydroponics. Summary of the invention

[0007] The purpose of the present invention is to solve the problem that the traditional plant hydroponic seedling raising device cannot solve the problem that the liquid fluctuation caused by changing the nutrient solution acts on the root system of the seedling, causing the root system of the seedling to be crooked.

[0008] In order to achieve the above object, the present invention provides the following basic scheme:

[0009] A plant hydroponic seedling raising device comprises, from bottom to top, a base cavity, an air bag assembly arranged in the base cavity, a receiving plate arranged on the air bag assembly and capable of being engaged with the base cavity, a frame body with an inner diameter equal to the outer diameter of the receiving plate, a seedling root fixing piece arranged in the frame body for providing a supporting force for the seedling root system, and a seedling fixing piece detachably connected to the frame body for fixing a non-root part of the seedling;

[0010] The two sides of the frame are respectively provided with a liquid inlet and a liquid outlet with a height difference, and the receiving plate can slide in the frame and the sliding height shall not be higher than the setting height of the liquid inlet.

[0011] The principles and effects of this basic solution are:

[0012] 1. Compared with the prior art, the present device has a simple structure and an ingenious design. The present device is provided with an airbag assembly, which is used to realize the up and down movement of the receiving plate. When the receiving plate moves up and down, the liquid level of the nutrient solution moves up and down with the up and down movement of the receiving plate. For seedling cultivation, not only can the contact position between the nutrient solution and the seedling root system be reasonably selected artificially, but also the replacement of the nutrient solution is more stable. The traditional method is to open the drain port, let the liquid flow out along the drain port, and then inject new nutrient solution again through the pump body. In this case, The airbag assembly and the receiving plate directly avoid the liquid fluctuations caused by the liquid flowing out along the drain outlet, and solve the problem that the traditional plant hydroponic seedling raising device cannot solve the liquid fluctuations caused by changing the nutrient solution, which causes the seedling roots to be crooked. The main core is: give priority to lowering the liquid level, so that the liquid level of the nutrient solution is separated from the seedling roots first, and then the nutrient solution is discharged. The advantage of this operation is that the fluctuations caused by the outflow of the liquid level will basically not interfere with the seedlings. In the long run, it will basically not cause the problem of shaking and crooked growth of the seedlings.

[0013] 2. Compared with the prior art, since the core of this device is to give priority to achieving the lowering of the liquid level, so that the liquid level of the nutrient solution is separated from the seedling roots first, in this process, the buoyancy changes caused by the lowering of the liquid level will still act on the seedling roots. This device still does not want such subtle changes to affect the seedling roots. Therefore, this device is also provided with seedling fixings and seedling root fixings. The seedling fixings and seedling root fixings can first avoid the influence of buoyancy changes. Secondly, the seedling fixings and seedling root fixings can make the seedlings grow more stably, and the influence of the outside world can be reduced.

[0014] 3. Compared with the prior art, regarding the seedling fixing parts: the core of the seedling fixing parts is: it is used to fix the upper part of the seedling root system, and the main purpose is to fix the non-root part of the seedling, thereby reducing the influence of external factors such as wind, shaking and other factors to a minimum, and finally completing the hydroponic seedling cultivation.

[0015] 4. Compared with the prior art, regarding the seedling root fixing part: the core of the seedling root fixing part is: it is used to fix the root part of the seedling, and its purpose is to replace the role of the soil. Due to hydroponic cultivation, the root system leaves the support of the soil, and the presence or absence of nutrient solution has a greater impact on the root system. Over time, it will lead to incorrect growth of the root system. For this reason, the device is equipped with a seedling root fixing part. The seedling root fixing part mainly provides a supporting force for the seedling root system, so that the seedling root system can obtain upward support force, thereby improving the stability of the seedling root system. From then on, the disappearance of the nutrient solution will have an extremely limited impact on the seedling root system.

[0016] 5. Compared with the prior art, the seedling root fixing parts utilize the characteristics of dense root systems of many hydroponic plants. The seedling root fixing parts are designed based on the characteristics of dense root systems of hydroponic plants, so that the roots of hydroponic plants can pass through the gaps between the seedling root fixing parts, thereby improving the dependence between the roots of hydroponic plants and the seedling root fixing parts, and then improving the stability of root fixation.

[0017] 6. Compared with the prior art, the airbag assembly has advantages not only in water discharge, but also in water intake. The traditional liquid replacement assembly uses a pump body to transport liquid. After the liquid enters the hydroponic tank, the liquid fluctuation caused will affect the seedling root system. Since the height of the receiving plate of this device is adjustable, when the nutrient solution enters, the distance between the receiving plate and the seedling root system becomes farther, and the impact of the liquid fluctuation on the seedling root system will be reduced.

[0018] Furthermore, the bottom of the frame is fixedly connected to the base cavity, and a plurality of anti-slip pads are provided at the bottom of the base cavity.

[0019] Furthermore, the airbag assembly includes an inflatable airbag body, a connecting hose arranged on the base cavity, a connecting hole opened on the inflatable airbag body and an inflatable generator, the output end of the inflatable generator is connected to the connecting hose, the free end of the connecting hose is connected to the connecting hole, and when the inflatable airbag body is not inflated, the upper surface of the receiving plate and the upper surface of the base cavity are in the same plane.

[0020] Furthermore, the upper surface of the base cavity is symmetrically provided with card slots, and card blocks are fixedly connected to positions corresponding to the card slots on both sides of the receiving plate, and the card slots are card-engaged with the card blocks.

[0021] Furthermore, a sliding groove is opened at the position of the card block corresponding to the inner wall of the frame, and the card block is slidably connected to the sliding groove. A sealing block is fixed to the side of the sliding groove away from the base cavity, and the sealing block is arranged around the end of the sliding groove. The upper surface of the card block and the upper surface of the receiving plate are on the same plane.

[0022] Furthermore, a liquid inlet is provided on the liquid inlet, one end of the liquid inlet is connected to the interior of the frame, the other end of the liquid inlet is connected to a nutrient solution reservoir, a water pump is provided in the nutrient solution reservoir, the liquid inlet is arranged near the top of the frame, the liquid outlet is arranged near the bottom of the frame, and a sealing plug is provided on the liquid outlet.

[0023] Furthermore, a filter screen is provided at a connection point where one end of the liquid inlet pipe communicates with the interior of the frame.

[0024] Furthermore, the seedling fixing part includes a cover plate, mounting blocks arranged on both sides of the cover plate, connecting holes arranged on the mounting blocks and seedling fixing holes evenly arranged on the cover plate, the frame body has a mounting groove for connecting the mounting blocks at a position corresponding to the mounting blocks, the connecting holes run through the mounting grooves, and the seedling fixing holes are provided with a seedling fixing component for fixing the non-root part of the seedling.

[0025] Furthermore, the seedling fixing assembly includes a sliding groove opened on the inner wall of the seedling fixing hole, an arc plate and an elastic ring slidably connected to the sliding groove, and the free ends of the arc plate are provided with notches, which are used to fix the non-root part of the seedling, and the elastic ring limits the position of the arc plate.

[0026] Furthermore, the seedling root fixing device includes a plurality of horizontal bars and a plurality of vertical bars fixedly connected to the inside of the frame, the horizontal bars and the vertical bars are arranged in a staggered manner, the setting heights of the horizontal bars and the vertical bars are higher than the setting height of the liquid inlet, and the horizontal bars and the vertical bars are staggered to form a plurality of adjacent gaps, and the gaps are used to provide support force for the seedling roots. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 A schematic structural diagram of a plant hydroponic seedling raising device proposed in an embodiment of the present application is shown;

[0029] Figure 2 A schematic diagram of the front view of the installation of a plant hydroponic seedling raising device proposed in an embodiment of the present application is shown;

[0030] Figure 3 The present invention shows a plant hydroponic seedling raising device in an embodiment of the present invention. Figure 1 A schematic diagram of the structure from another angle;

[0031] Figure 4The present invention shows a plant hydroponic seedling raising device in an embodiment of the present invention. Figure 2 Schematic diagram of the local structure of part A in FIG.

[0032] Figure 5 A top view of the installation position of a curved plate of a plant hydroponic seedling raising device proposed in an embodiment of the present application is shown;

[0033] Figure 6 A schematic plan view of a seedling root fixing member in a plant hydroponic seedling raising device proposed in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0034] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0035] The figure marks in the drawings of the specification include: base cavity 1, connecting hose 2, inflatable airbag body 3, connecting hole 4, receiving plate 5, block 6, slot 7, frame 8, liquid inlet pipe 9, slide groove 10, cross bar 11, mounting groove 12, liquid outlet 13, sealing plug 14, mounting block 15, connecting hole 16, cover plate 17, seedling fixing hole 18, nutrient solution 19, filter screen 20, sealing block 21, sliding groove 22, arc plate 23, seedling non-root part 24, notch 25, elastic ring 26, seedling 27, root part 28, vertical rod 29.

[0036] Implementation example Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown:

[0037] A plant hydroponic seedling raising device comprises, from bottom to top, a base cavity 1, an air bag assembly arranged in the base cavity 1, a receiving plate 5 arranged on the air bag assembly and capable of being snapped with the base cavity 1, a frame 8 having an inner diameter equal to an outer diameter of the receiving plate 5, a seedling 27 root fixing member arranged in the frame 8 for providing root support for the seedling 27, and a seedling 27 fixing member detachably connected to the frame 8 for fixing a non-root part 24 of the seedling, wherein a liquid inlet and a liquid outlet 13 with a height difference are respectively arranged on both sides of the frame 8, the receiving plate 5 can slide in the frame 8 and the sliding height shall not be higher than the setting height of the liquid inlet.

[0038] About the whole device:

[0039] The base cavity 1 is fixedly connected to the frame 8, the seedling 27 fixing piece is detachably connected to the top of the frame 8, and a plurality of anti-skid pads are provided at the bottom of the base cavity 1 to improve the stability of the device;

[0040] like Figure 1 and Figure 2 As shown:

[0041] About the airbag assembly: The airbag assembly includes an inflatable airbag body 3, a connecting hose 2 arranged on the base cavity 1, a connecting hole 4 opened on the inflatable airbag body 3 and an inflatable generator. The output end of the inflatable generator is connected to the connecting hose 2, and the free end of the connecting hose 2 is connected to the connecting hole 4.

[0042] Specifically: the inflatable generator is a small nitrogen generator, which is externally arranged on the outside of the device. The gas enters the inflatable airbag body 3 through the connecting hose 2. The bottom of the inflatable airbag body 3 is fixed to the bottom of the base cavity 1. The rest of the inflatable airbag body 3 expands. As the inflatable airbag body 3 expands, the receiving plate 5 enters the frame 8 and slides in the frame 8.

[0043] The airbag assembly can make the receiving plate 5 move up and down. When the inflatable airbag body 3 is not inflated, the upper surface of the receiving plate 5 and the upper surface of the base cavity 1 are in the same plane. The upper surface of the base cavity 1 is symmetrically provided with card slots 7. Card blocks 6 are fixedly connected at the positions corresponding to the card slots 7 on both sides of the receiving plate 5. The card slots 7 are engaged with the card blocks 6. When the inflatable airbag body 3 is not inflated, the base cavity 1 and the receiving plate 5 are a sealed whole.

[0044] Since the receiving plate 5 enters the frame 8 and slides in the frame 8, it is necessary to reasonably set the connecting components for the up and down sliding of the receiving plate 5. Figure 2 As shown, a slide groove 10 is provided at the position of the block 6 corresponding to the inner wall of the frame 8, and the block 6 is slidably connected to the slide groove 10. A sealing block 21 is fixedly connected to the side of the slide groove 10 away from the base cavity 1, and the sealing block 21 is arranged around the end of the slide groove 10. Figure 3 As shown, the setting position of the sealing block 21 is the farthest distance that the receiving plate 5 can reach. When reaching this position, the inflation needs to be stopped, because a pressure sensor needs to be provided on the sealing block 21, and the corresponding controller matching the pressure sensor is used to control the shutdown of the inflation generator;

[0045] Since the function of the receiving plate 5 is to receive the nutrient solution 19, the receiving plate 5 needs to be well sealed, and a sealing waterproof layer is provided around the receiving plate 5 and around the block 6 to prevent the nutrient solution 19 from flowing downward from the gap between the frame 8 and the receiving plate 5. Similarly, the sealing block 21 is provided to prevent the nutrient solution 19 from entering the slide 10 from the sliding connection gap to prevent the nutrient solution 19 from being lost.

[0046] like Figure 3As shown, the upper surface of the card block 6 and the upper surface of the receiving plate 5 are on the same plane. When the inflatable airbag body 3 is not inflated, the base cavity 1 and the receiving plate 5 are a sealed whole. In order to better make the base cavity 1 and the receiving plate 5 a sealed whole, the upper surface of the card block 6 is set to be at the same height as the upper surface of the receiving plate 5, so that the card block 6 can enter the card slot 7 conveniently;

[0047] A liquid inlet pipe 9 is provided on the liquid inlet, one end of the liquid inlet pipe 9 is connected to the interior of the frame 8, the other end of the liquid inlet pipe 9 is connected to a nutrient solution 19 reservoir, a water pump is provided in the nutrient solution 19 reservoir, the liquid inlet is arranged near the top of the frame 8, the liquid outlet 13 is arranged near the bottom of the frame 8, a sealing plug 14 is provided on the liquid outlet 13, and a filter screen 20 is provided at the connection point where one end of the liquid inlet pipe 9 is connected to the interior of the frame 8.

[0048] Water pump: provides a certain pressure so that the nutrient solution 19 in the nutrient solution 19 storage can enter the frame 8 from the liquid inlet pipe 9 and be received by the receiving plate 5.

[0049] Filter 20: filter non-liquid impurities in the nutrient solution 19 to ensure the quality of the nutrient solution 19;

[0050] Sealing plug 14: opening the sealing plug 14 allows the waste nutrient solution 19 to flow out from the liquid outlet 13;

[0051] Nutrient solution 19: Regarding the nutrient solution 19, this embodiment takes the common nutrient solution 19 for hydroponics as an example:

[0052] Specific:

[0053] Each liter of nutrient solution 19 contains the following components: solution A: 750 mg / L-864 mg / L calcium ammonium nitrate; solution B: 780 mg / L-831 mg / L potassium dihydrogen phosphate, 70 mg / L-90 mg / L ammonium dihydrogen phosphate and 450 mg / L-520 mg / L magnesium sulfate heptahydrate, and the rest is water. The pH value of the nutrient solution 19 is 4.5-6.5;

[0054] After the A liquid and the B liquid are mixed, they are put into the nutrient solution 19 storage tank, and under the action of the water pump, they enter the frame 8 and are received by the receiving plate 5;

[0055] like Figure 3 and Figure 4 As shown:

[0056] The seedling 27 fixing part includes a cover plate 17, mounting blocks 15 arranged on both sides of the cover plate 17, connecting holes 4 arranged on the mounting blocks 15 and seedling fixing holes 18 evenly arranged on the cover plate 17. The frame 8 has a mounting groove 12 for connecting the mounting block 15 at a position corresponding to the mounting block 15, and the connecting hole 4 runs through the mounting groove 12. The seedling fixing hole 18 is provided with a seedling 27 fixing component for fixing the non-root part 24 of the seedling.

[0057] In terms of connection: use connecting screws to connect the connecting hole 4 on the mounting groove 12 and the connecting hole 4 on the mounting block 15 to achieve connection and disassembly of the cover plate 17 and the frame 8;

[0058] On the seedling 27 fixing assembly, as Figure 5 As shown:

[0059] The seedling 27 fixing assembly includes a sliding groove 22 opened on the inner wall of the seedling fixing hole 18, an arc plate 23 and an elastic ring 26 slidably connected to the sliding groove 22, and the free end of the arc plate 23 is provided with a notch 25. The notch 25 is used to fix the non-root part 24 of the seedling, and the elastic ring 26 limits the position of the arc plate 23.

[0060] Specifically: the seedling 27 is inserted into the seedling fixing hole 18 as a whole, and then the arc plate 23 is slid by hand so that the arc plate 23 moves toward the sliding groove 22, the notch 25 is enlarged, and the notch is used to fix the non-root part 24 of the seedling, such as the stem part, and the elastic ring 26 is used to limit the position of the arc plate 23 to complete the fixation of the non-root part 24 of the seedling, such as the stem part. Figure 6 The clamping action point is the fixed position of the arc plate 23 to the non-root part 24 of the seedling, such as the stem part.

[0061] The root fixing member of the seedling 27 includes a plurality of horizontal bars 11 and a plurality of vertical bars 29 fixedly connected to the inside of the frame 8. The horizontal bars 11 and the vertical bars 29 are arranged in a staggered manner. The setting heights of the horizontal bars 11 and the vertical bars 29 are both higher than the setting height of the liquid inlet. The horizontal bars 11 and the vertical bars 29 are arranged in a staggered manner to form a plurality of adjacent gaps, which are used to provide root support for the seedling 27. For details, see Figure 6 ;

[0062] The core is: through the staggered arrangement of the horizontal bars 11 and the plurality of vertical bars 29, a large number of gaps are formed for the roots to pass through and grow. Due to the dense characteristics of the root system, most of the roots will be supported by the staggered arrangement of the horizontal bars 11 and the plurality of vertical bars 29, and then the staggered arrangement of the horizontal bars 11 and the plurality of vertical bars 29 provide a certain support force;

[0063] Specific implementation process:

[0064] The first step is to allow the nutrient solution 19 to enter. First, use the airbag assembly to allow the receiving plate 5 to enter the frame 8. Then turn on the water pump to inject the nutrient solution 19. The root system absorbs the nutrients in the nutrient solution 19 to complete the hydroponics.

[0065] The second step is to replace the nutrient solution 19. First, the airbag assembly is discharged in the reverse direction, that is, the small nitrogen generator is removed to discharge the gas from the connecting hose 2. Then, the receiving plate 5 begins to descend after lacking the support of the airbag assembly. During the descent, the liquid level of the nutrient solution 19 begins to move away from the root system, avoiding the liquid fluctuation caused by the liquid flowing out of the drain port. Then, the sealing plug 14 is removed to complete the outflow of the waste nutrient solution 19, and the first step is repeated to complete the replacement of the nutrient solution 19.

[0066] During the repetition of steps 1 and 2:

[0067] Priority is given to lowering the liquid level so that the liquid level of the nutrient solution 19 is separated from the roots of the seedlings 27 before the nutrient solution 19 is discharged. The advantage of this operation is that the fluctuation caused by the outflow of the liquid level will basically not interfere with the seedlings 27, and in the long run, it will basically not cause the seedlings 27 to shake or grow crookedly.

[0068] Secondly, the buoyancy changes caused by the drop in liquid level will still act on the roots of the seedlings 27. Therefore, a seedling 27 fixing component and a seedling 27 root fixing piece are provided. The seedling 27 fixing component and the seedling 27 root fixing piece are used to stabilize the root part 28 and the non-root part 28 of the seedling 27 respectively, thereby avoiding the influence of the buoyancy changes caused by the drop in liquid level, ensuring that the roots will not be affected by external forces and thus ensuring that the roots will not grow crookedly.

[0069] The device solves the problem that the root system of the seedling 27 is skewed when the liquid fluctuation caused by the replacement of the nutrient solution 19 acts on the root system of the seedling 27, which cannot be solved by the traditional plant hydroponic seedling raising device.

[0070] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A plant hydroponic seedling raising device, characterized in that: The invention comprises a base cavity arranged in sequence from bottom to top, an air bag assembly arranged in the base cavity, a receiving plate arranged on the air bag assembly and capable of being connected with the base cavity, a frame body with an inner diameter equal to the outer diameter of the receiving plate, a seedling root fixing piece arranged in the frame body for providing a supporting force for the seedling root system, and a seedling fixing piece detachably connected to the frame body for fixing the non-root part of the seedling; The two sides of the frame are respectively provided with a liquid inlet and a liquid outlet with a height difference, and the receiving plate can slide in the frame and the sliding height shall not be higher than the setting height of the liquid inlet; The airbag assembly includes an inflatable airbag body, a connecting hose arranged on the base cavity, a connecting hole opened on the inflatable airbag body, and an inflatable generator, wherein the output end of the inflatable generator is connected to the connecting hose, and the free end of the connecting hose is connected to the connecting hole. When the inflatable airbag body is not inflated, the upper surface of the receiving plate and the upper surface of the base cavity are in the same plane; The seedling fixing member includes a cover plate, mounting blocks arranged on both sides of the cover plate, connection holes arranged on the mounting blocks, and seedling fixing holes evenly arranged on the cover plate, the frame body is provided with mounting grooves for connecting the mounting blocks at positions corresponding to the mounting blocks, the connection holes run through the mounting grooves, and the seedling fixing holes are provided with seedling fixing components for fixing the non-root parts of the seedlings; The seedling fixing assembly includes a sliding groove opened on the inner wall of the seedling fixing hole, an arc-shaped plate slidably connected to the sliding groove, and an elastic ring. The free ends of the arc-shaped plates are each provided with a notch, and the notch is used to fix the non-root part of the seedling, and the elastic ring limits the position of the arc-shaped plate; The seedling root fixing device includes a plurality of horizontal bars and a plurality of vertical bars fixedly connected to the inside of the frame, the horizontal bars and the vertical bars are arranged in a staggered manner, the setting heights of the horizontal bars and the vertical bars are both higher than the setting height of the liquid inlet, and the horizontal bars and the vertical bars are staggered to form a plurality of adjacent gaps, and the gaps are used to provide support force for the seedling roots.

2. A plant hydroponic seedling raising device according to claim 1, characterized in that: The bottom of the frame is fixedly connected to the base cavity, and a plurality of anti-skid pads are arranged on the bottom of the base cavity.

3. A plant hydroponic seedling raising device according to claim 1, characterized in that: The upper surface of the base cavity is symmetrically provided with card slots, and card blocks are fixedly connected to positions corresponding to the card slots on both sides of the receiving plate, and the card slots are card-connected with the card blocks.

4. A plant hydroponic seedling raising device according to claim 3, characterized in that: A sliding groove is opened at the position of the block corresponding to the inner wall of the frame, and the blocking block is slidably connected to the sliding groove. A sealing block is fixedly connected to the side of the sliding groove away from the base cavity. The sealing block is arranged around the end of the sliding groove, and the upper surface of the blocking block and the upper surface of the receiving plate are on the same plane.

5. A plant hydroponic seedling raising device according to claim 4, characterized in that: The liquid inlet is provided with a liquid inlet pipe, one end of which is connected to the interior of the frame, and the other end of the liquid inlet pipe is connected to a nutrient solution reservoir, in which a water pump is provided. The liquid inlet is arranged near the top of the frame, and the liquid outlet is arranged near the bottom of the frame, and a sealing plug is provided on the liquid outlet.

6. A plant hydroponic seedling raising device according to claim 5, characterized in that: A filter screen is arranged at a connection point where one end of the liquid inlet pipe is connected with the interior of the frame.

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