Device for changing heterogeneity of indoor potting soil

Abstract

The utility model discloses a device for changing indoor potting soil heterogeneity, and particularly relates to the technical field of potting soil experiments, which comprises an outer sphere, an inner sphere concentrically arranged in the outer sphere, a drainage device, a liquid inlet component and a controller, a plurality of first liquid drainage holes are evenly distributed in the circumferential direction of the outer ball body, a plurality of second liquid drainage holes are evenly distributed in the circumferential direction of the inner ball body, one first liquid drainage hole is connected and communicated with one second liquid drainage hole through a liquid drainage pipe, a control valve is arranged on the liquid drainage pipe, the liquid inlet assembly is connected with the inner ball body through the liquid inlet pipe, and the water drainage device is connected with the inner ball body. And the control valve, the liquid inlet assembly and the drainage device are all in signal connection with the controller. According to the utility model, the liquid matrix can be uniformly distributed in the soil, and the problem of soil heterogeneity in the horizontal and vertical directions is effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of potted soil experimental technology, and in particular to a device for altering the heterogeneity of indoor potted soil. Background Technology

[0002] In indoor potted plant experiments simulating nutrient stress, salt stress, or drought stress, a lack of uniform control in the addition of nutrients, saline solution, or water will directly lead to significant spatial heterogeneity in soil physicochemical properties. This heterogeneity will significantly interfere with the reliability and scientific validity of the experimental results.

[0003] Existing soil treatment techniques for potted plant stress experiments mainly rely on manual operation or traditional irrigation methods, including manual mixing irrigation (directly pouring salt solutions, nutrient solutions, or water onto the soil surface and then simply mixing), single-path irrigation (static infiltration through pre-set irrigation holes or pipes), and natural diffusion (relying on gravity and capillary effects to achieve solution infiltration). However, these techniques have significant drawbacks: manual mixing can only achieve macroscopic mixing at the surface, making it difficult to eliminate soil micro-concentration gradients, easily creating infiltration dead zones in densely rooted areas, and resulting in poor repeatability; single-path irrigation leads to the solution being dominated by gravity, with the concentration in the upper soil layer (especially the 0-5cm soil layer) being significantly higher than in the deeper layers, failing to simulate the gradient distribution characteristics of the soil profile under natural stress; at the same time, existing techniques rely on destructive sampling and laboratory testing, lacking real-time dynamic monitoring methods, making it difficult to accurately control stress intensity and adjust parameters based on feedback, thus limiting experimental efficiency and accuracy.

[0004] When nutrients, salts, or water are unevenly distributed in the soil, plant roots preferentially grow towards areas with better local conditions (such as low-salt areas, high-nutrient-rich areas, or water-sufficient areas). This selective growth pattern leads to significant differences in the stress intensity exposed to different plants within the same treatment group, or between different parts of the same plant. Consequently, measurements of physiological indicators (such as plant height, biomass accumulation, and chlorophyll content) may not accurately reflect the pre-set stress intensity level. This could either mask the actual stress effect (e.g., a locally suitable environment weakens the stress response) or amplify the stress effect (e.g., a locally extreme environment causes excessive damage). Differences in plant growth within the same treatment group due to uneven soil conditions increase data dispersion and reduce statistical power (e.g., p-values ​​are not significant). Differences between different treatment groups may be confused by soil heterogeneity. For example, a localized area in the control group with abnormally high salt concentration may be misclassified as a stress group, ultimately leading to a misjudgment of the treatment effect. Utility Model Content

[0005] The purpose of this invention is to provide a device for altering the heterogeneity of indoor potted soil, thereby solving the problems existing in the prior art, enabling uniform distribution of liquid matrix in the soil, and effectively addressing the problem of soil heterogeneity in both horizontal and vertical directions.

[0006] To achieve the above objectives, this utility model provides the following solution:

[0007] This utility model provides a device for altering the heterogeneity of indoor potted plant soil, comprising an outer sphere, an inner sphere concentrically arranged within the outer sphere, a drainage device, a liquid inlet assembly, and a controller. The outer sphere is used to be buried at the center of the indoor potted plant soil. Multiple first drainage holes are evenly distributed around the circumference of the outer sphere, and multiple second drainage holes are evenly distributed around the circumference of the inner sphere. Each first drainage hole is connected to and communicates with a second drainage hole via a drainage pipe. A control valve is provided on the drainage pipe. The liquid inlet assembly is connected to the inner sphere via a liquid inlet pipe. The drainage device is connected to the inner sphere and is used to drive the liquid within the inner sphere to be discharged from each of the drainage pipes. The control valve, the liquid inlet assembly, and the drainage device are all signal-connected to the controller.

[0008] Preferably, the drainage device includes an air pump, an air pipe, and a drive device, wherein the drive device is connected to the air pump through the air pipe, and the air pump is placed inside the inner sphere.

[0009] Preferably, the air pipe is equipped with a pressure regulator, and the pressure regulator is signal-connected to the controller.

[0010] Preferably, the liquid inlet assembly includes a liquid storage tank, a delivery pump, and a liquid inlet pipe. The liquid storage tank is connected to the inner sphere through the liquid inlet pipe, and the delivery pump is used to deliver the liquid from the liquid storage tank to the inner sphere.

[0011] Preferably, a hydraulic sensor is provided on the inlet pipe, and the hydraulic sensor is signal-connected to the controller.

[0012] Preferably, the drain pipe is also equipped with a flow sensor, which is signal-connected to the controller.

[0013] The present invention achieves the following technical advantages over the prior art:

[0014] This invention provides a device for altering the heterogeneity of indoor potted soil. An outer sphere is embedded in the center of the soil, serving as the terminal carrier for solution output. A first drainage hole, evenly distributed circumferentially, ensures the solution diffuses radially in all directions. An inner sphere, serving as a storage carrier, is concentrically nested with the outer sphere. A second drainage hole is connected one-to-one with the first drainage hole via an independent drainage pipe, forming a multi-channel independent delivery system. The inner and outer spheres form a radially distributed delivery network, ensuring the synchronous homogeneous distribution of the solution in both horizontal and vertical directions. This effectively solves the experimental error problem caused by soil heterogeneity in traditional potted plant experiments. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the device for altering the heterogeneity of indoor potted soil according to the present invention.

[0017] In the diagram: 1-Indoor potted plant; 2-Outer sphere; 3-Inner sphere; 4-First drain hole; 5-Drain pipe; 6-Second drain hole; 7-Control valve; 8-Flow sensor; 9-Inlet pipe; 10-Air pipe; 11-Air pump; 12-Air pressure regulator; 13-Hydraulic sensor. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] The purpose of this invention is to provide a device for altering the heterogeneity of indoor potted soil, thereby solving the problems existing in the prior art, enabling uniform distribution of liquid matrix in the soil, and effectively addressing the problem of soil heterogeneity in both horizontal and vertical directions.

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] This utility model provides a device for altering the heterogeneity of indoor potted plant soil, such as... Figure 1As shown, the device includes an outer sphere 2, an inner sphere 3 concentrically arranged inside the outer sphere 2, a drainage device, a liquid inlet assembly, and a controller. The outer sphere 2 is used to bury the plant in the center of the soil of the indoor potted plant 1. The outer sphere 2 is evenly distributed with multiple first drainage holes 4 around its circumference, and the inner sphere 3 is evenly distributed with multiple second drainage holes 6 around its circumference. Each first drainage hole 4 is connected to and communicates with a second drainage hole 6 through a drainage pipe 5. A control valve 7 is installed on the drainage pipe 5. The liquid inlet assembly is connected to the inner sphere 3 through a liquid inlet pipe 9. The drainage device is connected to the inner sphere 3 and is used to drive the liquid in the inner sphere 3 to be discharged from each drainage pipe 5. The control valve 7 and the drainage device are both signal-connected to the controller. The outer sphere 2 is embedded in the center of the soil, serving as the terminal carrier for solution output. The first drainage holes 4, evenly distributed circumferentially, ensure the solution radiates and diffuses in all directions. The inner sphere 3, acting as a storage carrier, is concentrically nested with the outer sphere 2. The second drainage holes 6 are connected one-to-one with the first drainage holes 4 via independent drainage pipes 5, forming a multi-channel independent delivery system. The inner sphere 3 and outer sphere 2 form a radially distributed delivery network, ensuring synchronous and homogeneous distribution of the solution in both horizontal and vertical directions, effectively solving the experimental error problem caused by soil heterogeneity in traditional pot experiments. In use, the external liquid first enters the inner sphere 3 through the inlet assembly. Once the inner sphere 3 is full, the drainage device is activated, and the control valves 7 on each drainage pipe 5 are opened simultaneously. The liquid enters the drainage pipe network 5 through the second drainage holes 6 circumferentially around the inner sphere 3. Each drainage pipe 5 independently delivers liquid to its corresponding first drainage hole 4, and finally, the liquid is evenly released into the soil by the outer sphere 2. Preferably, the controller is a PID controller.

[0022] In a further preferred embodiment of this utility model, the drainage device includes an air pump 11, an air pipe 10, and a driving device. The driving device is connected to the air pump 11 via the air pipe 10, and the air pump 11 is placed inside the inner sphere 3. The driving device, which controls the start and stop of the air pump 11 or adjusts the gas flow, is connected to the air pump 11 placed inside the inner sphere 3 via the air pipe 10. The air pump 11 acts directly on the liquid inside the inner sphere 3, driving the liquid flow through gas pressure, forcing it to enter the drain pipe 5 through the second drain hole 6, and finally being discharged into the soil through the first drain hole 4 of the outer sphere 2. The gas pressure drive can quickly drain the liquid inside the inner sphere 3, avoiding concentration deviations caused by local stagnation.

[0023] In a further preferred embodiment of this utility model, the liquid inlet assembly includes a liquid storage tank, a delivery pump, and a liquid inlet pipe 9. The liquid storage tank is connected to the inner sphere 3 through the liquid inlet pipe 9, and the delivery pump is signal-connected to the controller. The controller controls the delivery pump to deliver the liquid from the liquid storage tank to the inner sphere 3.

[0024] In a further preferred embodiment of this invention, a pressure regulator 12 is installed on the air pipe 10, and the pressure regulator 12 is connected to the controller via signal connection. A hydraulic sensor 13 is installed on the liquid inlet pipe 9, and the hydraulic sensor 13 is connected to the controller via signal connection. A flow sensor 8 is also installed on the liquid outlet pipe 5, and the flow sensor 8 is connected to the controller via signal connection. The flow sensor 8 can sense the liquid flow rate in each outlet pipe 5 and feed the data back to the ultra-high precision PID controller. Based on the feedback data, the pressure regulator 12 and the delivery pump are adjusted in real time to control the air pressure and hydraulic pressure, ensuring that the liquid matrix is ​​uniformly discharged into the soil, so that the liquid matrix flow rate at each point is the same. By presetting the target value of the flow rate of the outlet pipe 5 through the PID controller, when the liquid matrix flow rate discharged into the soil reaches the preset target value, the PID controller can automatically shut off the air pump 11, the pressure regulator 12, and the control valve 7 in the outlet pipe 5, stopping the liquid from being discharged into the soil, avoiding excessive or insufficient liquid input, ensuring precise control of stress intensity, and ensuring precise control of the drainage rate and homogenization effect. The closed-loop feedback method based on the PID controller collects the flow rate of each drain pipe 5 in real time through the flow sensor 8, and the PID controller calculates the flow variation coefficient and adjusts the air pressure / hydraulic pressure to compensate for the deviation, thereby achieving the goal of maintaining multi-node flow synchronization.

[0025] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. An apparatus for changing the heterogeneity of a potting soil in a room, characterized by: The device comprises an outer sphere, an inner sphere concentrically arranged in the outer sphere, a drainage device, a liquid inlet assembly and a controller, the outer sphere is arranged to be buried in the center of the soil of a potted plant, a plurality of first drainage holes are uniformly arranged on the circumference of the outer sphere, a plurality of second drainage holes are uniformly arranged on the circumference of the inner sphere, one first drainage hole is connected with one second drainage hole through a drainage pipe, a control valve is arranged on the drainage pipe, the liquid inlet assembly is connected with the inner sphere through a liquid inlet pipe, the drainage device is connected with the inner sphere, and the drainage device is used to drive the liquid in the inner sphere to be discharged from each drainage pipe, and the control valve, the liquid inlet assembly and the drainage device are all signal-connected with the controller.

2. The apparatus for changing the heterogeneity of the indoor potting soil according to claim 1, characterized in that: The drainage device comprises an air pump, an air pipe and a driving device, the driving device is connected with the air pump through the air pipe, and the air pump is arranged in the inner sphere.

3. The apparatus for changing the heterogeneity of the indoor potting soil according to claim 2, characterized in that: An air pressure regulator is arranged on the air pipe, and the air pressure regulator is signal-connected with the controller.

4. The apparatus for changing the heterogeneity of indoor potting soil according to claim 1, wherein: The liquid inlet assembly comprises a liquid storage tank, a conveying pump and the liquid inlet pipe, the liquid storage tank is connected with the inner sphere through the liquid inlet pipe, and the conveying pump is used to convey the liquid in the liquid storage tank to the inner sphere.

5. The apparatus for changing the heterogeneity of the indoor potting soil according to claim 4, characterized in that: A liquid pressure sensor is arranged on the liquid inlet pipe, and the liquid pressure sensor is signal-connected with the controller.

6. The apparatus for altering the heterogeneity of indoor potting soil according to claim 1, wherein: A flow sensor is further arranged on the drainage pipe, and the flow sensor is signal-connected with the controller.

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