Stepped plant seedling tray drainage structure

Abstract

The invention relates to the technical field of plant seedling raising, in particular to a stepped plant seedling raising tray drainage structure which comprises a tray body and multiple stages of flow guide plates, drainage holes are formed in the bottom of the tray body, the flow guide plates are obliquely stacked to form a stepped structure, an annular water retaining eave and a water collecting tank are arranged on the edge, and a filter mesh is arranged at the bottom of the water collecting tank. Arc-shaped flow dividing protrusions are arranged at the joints of the adjacent flow guide plates. By optimizing the drainage path and the anti-blocking design, efficient drainage and accurate moisture regulation are achieved, meanwhile, degradable materials are adopted, the environment friendliness and practicability are achieved, the seedling growing effect and the root system protection capacity are remarkably improved, and the sustainable development requirement of modern agriculture is met.

Description

Technical Field

[0001] The present invention belongs to the technical field of plant seedling raising, and specifically relates to a stepped drainage structure for a plant seedling raising tray. Background Art

[0002] With the rapid development of modern agriculture, plant seedling raising trays are increasingly widely used in agricultural production and have become an important tool for improving the efficiency and quality of seedling raising. The design of the drainage structure of the seedling raising tray is one of the key technologies, which directly affects the seedling raising effect and operation convenience. However, the existing drainage structures of seedling raising trays still have deficiencies in many aspects, including low drainage efficiency, easy root blockage, and difficulty in adapting to the differential regulation of water requirements for different plants. These problems limit the further improvement of the performance of the seedling raising tray.

[0003] After retrieval, it is found that the patent with the publication number CN108503035B discloses a stepped composite ecological floating island for treating slightly polluted water bodies. By setting multiple stepped purification pools and combining siphon tubes and plant planting pads, it realizes the step-by-step purification of water bodies and the removal of pollutants. However, this technical solution is mainly applied to the field of water body treatment, and its stepped design is not optimized for the specific needs of plant seedling raising trays. In particular, its drainage structure is relatively complex, and there is a lack of effective preventive measures against root blockage, making it difficult to be directly applied to the drainage scenario of seedling raising trays.

[0004] In addition, the patent with the publication number CN114837130B discloses a river ecological slope protection structure and its construction method. By setting stepped water-filtering flowerpots and combining double-layer filtering iron nets and gravel filter materials, it realizes the filtration and discharge of rainwater. Although this technical solution adopts a stepped design, its main purpose is to improve the drainage performance of river slopes, rather than specifically for plant seedling raising needs. Its structural design does not fully consider the fine control of the drainage volume during the seedling raising process, nor can it meet the differential regulation of water requirements for different plants.

[0005] The above-mentioned existing technologies show that when the existing stepped drainage structures are applied to plant seedling raising trays, there are generally problems such as insufficient drainage efficiency, easy root blockage, and inability to flexibly adapt to the needs of different plants. Therefore, there is an urgent need for a stepped drainage structure for a plant seedling raising tray that can optimize the drainage path, enhance the anti-blocking ability, and achieve precise water regulation, so as to improve the drainage performance of the seedling raising tray and meet the requirements of modern agriculture for efficient and intelligent seedling raising equipment. Summary of the Invention

[0006] The technical problem to be solved by the present invention is: to provide a stepped drainage structure for a plant seedling raising tray, which realizes efficient drainage, precise water regulation, and good root protection function by optimizing the drainage path and enhancing the anti-blocking ability, and significantly improves the seedling raising effect.

[0007] The object of the present invention is achieved through the following technical solutions: A stepped drainage structure for a plant seedling tray includes a tray main body and multiple stages of diversion plates arranged inside the tray main body. The bottom of the tray main body is provided with a plurality of drainage holes. Each stage of the diversion plate is inclined and stacked in sequence to form a stepped structure. An annular water retaining edge is provided at the edge of the diversion plate. A water collecting groove is formed between the water retaining edge and the diversion plate. A filter mesh is provided at the bottom of the water collecting groove. During use, water flows down step by step along the diversion plate and enters the water collecting groove through the filter mesh, and finally discharges from the drainage holes.

[0008] The tray main body is injection-molded from a degradable material, and the wall thickness of the tray main body is 1.5 - 2.0 mm, ensuring that it has sufficient strength and environmental protection performance.

[0009] The diversion plate and the annular water retaining edge at its edge are made by an integral forming process. The thickness of the diversion plate is 0.8 - 1.2 mm, and the inclination angle is 5° - 10°, so as to ensure that water can flow smoothly along the diversion plate and avoid water accumulation.

[0010] A diversion protrusion is provided at the connection between adjacent two stages of the diversion plates. The diversion protrusion is designed in an arc shape and is used to evenly disperse water flow to both sides of the diversion plate, thereby reducing the impact of water flow on the roots and further improving the drainage efficiency.

[0011] The length of each stage of the diversion plate is 150 - 200 mm, the width is 100 - 120 mm, and the vertical height difference between adjacent two stages of the diversion plates is 15 - 20 mm. This size design enables the water flow to transition smoothly step by step and avoids root damage caused by too fast water flow velocity.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By setting multiple stages of diversion plates and annular water retaining edges, the present invention forms a unique stepped drainage structure, effectively optimizing the drainage path, improving the drainage efficiency, reducing the risk of root blockage, and significantly improving the seedling raising environment.

[0013] 2. Using a degradable material to make the tray main body in the present invention not only reduces the production cost but also reduces environmental pollution, meeting the requirements of sustainable development of modern agriculture.

[0014] 3. By setting diversion protrusions at the connections of the diversion plates, the present invention realizes the uniform distribution of water flow, avoids problems such as local water accumulation or too fast water flow, further improves the seedling raising quality, and meets the differential regulation of water requirements for different plants. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic exploded view of the overall structure of the present invention; Figure 2 Schematic diagram of the three-dimensional structure of the tray body; Figure 3 Axonometric view of the tray body; Figure 4 For Figure 3 Enlarged schematic diagram of the truncated tray body structure in; Figure 5 Partial enlarged schematic diagram of the deflector and its annular water retaining eaves; Figure 6 For Figure 5 Partial enlarged schematic diagram of the deflector structure in; Figure 7 Enlarged view of the assembled tray body and multi-stage deflectors; Figure 8 Partial enlarged schematic diagram of the diversion protrusion; Description of the drawings: 1. Tray body; 2. Deflector; 3. Annular water retaining eaves; 4. Water collection tank; 5. Filter mesh; 6. Drainage hole; 7. Diversion protrusion; 8. Degradable material layer. Detailed implementation manners

[0016] The present invention provides a stepped plant seedling tray drainage structure, and its detailed implementation manners are described in detail below in conjunction with the drawings. As Figures 1 to 8 shown, the seedling tray drainage structure includes a tray body 1, a multi-stage deflector 2, an annular water retaining eaves 3, a water collection tank 4, a filter mesh 5, a drainage hole 6, a diversion protrusion 7, and a degradable material layer 8. The specific designs and operating principles of each component will be elaborated in detail below.

[0017] First of all, the tray body 1 is the core part of the entire device, which is injection-molded with an environmentally friendly degradable material, and the wall thickness is 1.5~2.0 mm. This thickness range ensures that the tray body has sufficient strength and durability during use, and at the same time meets the requirements of sustainable development in modern agriculture. Multiple drainage holes 6 are provided at the bottom of the tray body, and these drainage holes are evenly distributed on the bottom surface of the tray body for discharging the water after multiple filtrations. The diameter of the drainage holes is adjusted according to the actual application scenario, and is generally recommended to be 3~5 mm to ensure the drainage efficiency while avoiding blockage. Multiple-stage deflectors 2 are arranged inside the tray body, and each stage of the deflector is inclined and stacked in sequence to form a stepped structure, and the overall design optimizes the water flow path and significantly improves the drainage performance.

[0018] As Figure 2 and Figure 3As shown, the length of each stage of the flow deflector 2 is 150 - 200 mm, the width is 100 - 120 mm, and the vertical height difference between adjacent stages of the flow deflector is 15 - 20 mm. This size design enables the water flow to transition smoothly stage by stage, avoiding root damage caused by too fast a flow rate. The thickness of the flow deflector is 0.8 - 1.2 mm, and the inclination angle is 5° - 10°, to ensure that the water flow can flow smoothly along the flow deflector while reducing the occurrence of water accumulation. The flow deflector and the annular water retaining eaves 3 at its edge are made by an integral molding process. The height of the annular water retaining eaves is 5 - 8 mm, forming a water collection tank 4 with the flow deflector. The design of the water collection tank can not only effectively collect the water flowing down from the flow deflector, but also achieve preliminary filtration of impurities through the filter mesh 5 provided at its bottom. The aperture of the filter mesh is usually 0.5 - 1.0 mm, to ensure that most solid particles can be intercepted and prevent them from entering the drainage system and causing blockage.

[0019] At the connection between adjacent stages of the flow deflector, there is a flow splitting protrusion 7. The flow splitting protrusion is designed in an arc shape, as Figure 8 shown. The function of the flow splitting protrusion is to evenly disperse the water flow to both sides of the flow deflector, thereby reducing the impact of the water flow on the roots and further improving the drainage efficiency. The height of the flow splitting protrusion is 3 - 5 mm, and the width is 10 - 15 mm. Its arc design can effectively slow down the water flow speed and achieve uniform distribution of the water flow. In addition, the flow splitting protrusion can also play a certain buffering role, avoiding problems such as local water accumulation or too fast water flow when the water flow is large, thereby further improving the seedling raising quality.

[0020] During actual use, after the water flow enters from the top of the tray main body, it flows downward along the inclined surface of the first-stage flow deflector 2. Due to the inclination angle of the flow deflector being 5° - 10°, the water flow can naturally extend under the action of gravity, avoiding root damage caused by too fast a flow rate. When the water flow reaches the edge of the flow deflector, it will enter the water collection tank 4 between the annular water retaining eaves 3 and the flow deflector. The filter mesh 5 in the water collection tank will conduct preliminary filtration on the impurities in the water flow, and then the water flow continues to fall step by step along the flow deflector of the next stage. The vertical height difference between each stage of the flow deflector is 15 - 20 mm. This design enables the water flow to transition smoothly stage by stage, avoiding damage to the plant roots caused by sudden changes in the flow rate.

[0021] To further optimize the distribution effect of the water flow, the flow splitting protrusion 7 plays a key role at the connection between adjacent stages of the flow deflector. When the water flow flows from the upper-stage flow deflector into the lower-stage flow deflector, the flow splitting protrusion can evenly disperse the water flow to both sides of the flow deflector. The arc design of the flow splitting protrusion can not only slow down the water flow speed, but also prevent the water flow from concentrating and impacting a certain area, thereby protecting the plant roots from damage. In addition, the flow splitting protrusion can also adjust the distribution density of the water flow to a certain extent to meet the differential adjustment of the water requirements of different plants.

[0022] After the water flow completes multi-stage diversion, it will finally converge into the water collection tank at the bottom of the tray body and be discharged through the drain holes 6. The number and position of the drain holes are reasonably arranged according to the size of the tray body to ensure the maximization of drainage efficiency. To further improve the anti-clogging ability of the drainage system, a fine filter mesh is also set at the entrance of the drain holes. Its aperture is 0.3 - 0.5 mm, which can effectively intercept fine particles and prevent them from entering the drainage pipeline and causing blockage.

[0023] The tray body 1 of the present invention is injection-molded from a degradable material. Its material formula mainly includes polylactic acid (PLA), starch-based polymer and a small amount of plasticizer. Among them, polylactic acid accounts for 60% - 70% of the total material weight, starch-based polymer accounts for 20% - 30%, and plasticizer accounts for 5% - 10%. This material combination not only has good mechanical properties, but also can be rapidly degraded in the natural environment, reducing environmental pollution. The wall thickness of the tray body is 1.5 - 2.0 mm. This thickness range ensures strength while reducing material usage, thereby reducing production costs.

[0024] In addition, the operating principle of the present invention is based on gravity drive and multi-stage filtration mechanism. By optimizing the water flow path and enhancing the anti-clogging ability, it realizes efficient drainage, precise moisture control and good root protection functions. Specifically, when the water flow enters from the top of the tray body, it will fall step by step along the multi-stage diversion plates under the action of gravity. The inclination angle and vertical height difference of each stage of diversion plate jointly determine the speed and distribution density of the water flow, thus avoiding root damage caused by too fast flow rate. The design of the annular water retaining eaves and the water collection tank further optimizes the collection and filtration effect of the water flow, ensuring that the water flow has been purified multiple times before entering the drainage system. The introduction of the diversion protrusions significantly improves the uniform distribution ability of the water flow, avoiding problems such as local water accumulation or too fast water flow, thereby further improving the seedling raising quality.

[0025] In practical applications, the stepped plant seedling raising tray drainage structure of the present invention is applicable to the seedling raising process of various plants, especially suitable for crops that are more sensitive to water requirements. For example, during vegetable seedling raising, the tray body can be placed in a greenhouse or a plastic greenhouse, and water is supplied to the tray body through a drip irrigation system. After the water flow is treated by the multi-stage diversion plates and the filter mesh, it can supply the plant roots at an appropriate speed and density, thereby meeting the differential regulation of water requirements for different plants. In addition, since the tray body is made of a degradable material, it can be directly buried in the soil for degradation treatment after the seedling raising is completed, without additional recycling or treatment, greatly simplifying the operation process.

[0026] In summary, by setting up multi-level flow deflectors and annular water retaining eaves, the present invention forms a unique stepped drainage structure, effectively optimizing the drainage path, improving the drainage efficiency, reducing the risk of root blockage, and significantly improving the seedling raising environment. In addition, the use of degradable materials to make the tray body in the present invention not only reduces the production cost, but also reduces environmental pollution, meeting the requirements of sustainable development of modern agriculture. By setting diversion protrusions at the joints of the flow deflectors, the present invention achieves uniform distribution of water flow, avoids problems such as local water accumulation or too fast water flow, further improves the seedling raising quality, and meets the differential regulation of water requirements for different plants.

Claims

1. A stepped plant seedling tray drainage structure, characterized in that: It includes a tray body (1) and a multi-stage flow guide plate (2) arranged inside the tray body (1). A plurality of drain holes (6) are provided at the bottom of the tray body (1). Each stage of the flow guide plate (2) is inclined and stacked in sequence to form a stepped structure. An annular water retaining edge (3) is provided at the edge of the flow guide plate (2). A water collecting tank (4) is formed between the annular water retaining edge (3) and the flow guide plate (2). A filter mesh (5) is provided at the bottom of the water collecting tank (4).

2. The drainage structure of a stepped plant seedling tray according to claim 1, wherein: The tray body (1) is injection molded with a degradable material, and the wall thickness of the tray body (1) is 1.5 mm to 2.0 mm.

3. The drainage structure of a stepped plant seedling tray according to claim 1, characterized in that: The flow guide plate (2) and the annular water retaining edge (3) at its edge are made by an integral molding process. The thickness of the flow guide plate (2) is 0.8 mm to 1.2 mm, and the inclination angle is 5° to 10°.

4. A stepped plant seedling tray drainage structure according to claim 1, characterized in that: A flow splitting protrusion (7) is provided at the connection between adjacent two stages of the flow guide plate (2). The flow splitting protrusion (7) is designed in an arc shape. The height of the flow splitting protrusion (7) is 3 mm to 5 mm, and the width is 10 mm to 15 mm.

5. The drainage structure of a stepped plant seedling tray according to claim 1, characterized in that: The length of each stage of the flow guide plate (2) is 150 mm to 200 mm, the width is 100 mm to 120 mm, and the vertical height difference between adjacent two stages of the flow guide plate (2) is 15 mm to 20 mm.

6. The drainage structure of a stepped plant seedling tray according to claim 1, characterized in that: The height of the annular water retaining edge (3) is 5 mm to 8 mm, and the pore diameter of the filter mesh (5) at the bottom of the water collecting tank (4) is 0.5 mm to 1.0 mm.

7. The drainage structure of a stepped plant seedling tray according to claim 1, wherein: The diameter of the drain hole (6) is 3 mm to 5 mm. A fine filter mesh is provided at the entrance of the drain hole (6), and the pore diameter of the filter mesh is 0.3 mm to 0.5 mm.

8. The drainage structure of a stepped plant seedling tray according to claim 1, characterized in that: The tray body (1) is injection molded from a material combination of 60% to 70% polylactic acid, 20% to 30% starch-based polymer, and 5% to 10% plasticizer by total material weight.

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