A drip device for a flooding experiment

Abstract

The present invention discloses a drip device for a flooding experiment, which includes a storage rack, a water storage container, a cultivation container, a drip pipe, a floating pipe, an overflow pipe and a counterweight. The storage rack is successively provided with the water storage container and a plurality of cultivation containers from top to bottom. Adjacent cultivation containers are connected through the overflow pipe, and the top of the overflow pipe is higher than the preset height of the cultivation container. The bottom of the water storage container is connected with the drip pipe, and the drip pipe is provided with the floating pipe. A counterweight is arranged at the top of the floating pipe. The floating pipe floats up and down with the water level of the water storage container. The counterweight is used to adjust the height of the floating pipe exposed above the water surface. A water flow channel is formed between the floating pipe and the drip pipe. The water discharged from the water flow channel flows downward along the inner wall of the drip pipe. The inner cavity of the drip pipe below the floating pipe forms an air-filled cavity. The present invention aims to provide a drip device for a flooding experiment, which simplifies the operation processes of initial use and repeated use.

Description

Technical Field

[0001] The present invention relates to the technical field of waterlogging experiments, and particularly relates to a drip device for waterlogging experiments. Background Art

[0002] Water is added to the plants to be experimented, so that the water surface submerges the plants to be measured to a certain height, and the growth conditions of the plants are observed, thereby providing research data for studying the growth of plants. During the experiment, water is slowly dripped into the cultivation container containing the plants to be measured by using a container filled with water, simulating the environment where the plants are gradually submerged by water and maintaining a predetermined water level height. After the water reaches the predetermined height, it overflows into the cultivation container on the next layer. Different layers represent experimental plants with different waterlogging times. However, as the liquid level in the container filled with water decreases, the dripping speed of the water droplets will gradually slow down, resulting in different waterlogging time differences for the experimental plants in different layers, which is not conducive to experimental research. The prior art has also disclosed devices that can maintain a stable dripping speed. For example, the fruit tree decentralized underground uniform drip irrigation device with the publication number CN1227963C can drip water droplets evenly downward. However, before use and during repeated use, water needs to be filled into the inverted U-shaped tube, and the operation steps are cumbersome. Summary of the Invention

[0003] Aiming at the above-mentioned prior art, the present invention aims to provide a drip device for waterlogging experiments, which simplifies the operation processes of initial use and repeated use.

[0004] The technical solution of the present invention is realized as follows:

[0005] A drip device for waterlogging experiments includes a storage rack, a water storage container, cultivation containers, drip tubes, floating tubes, overflow tubes and counterweights. The storage rack is successively provided with the water storage container and a plurality of cultivation containers from top to bottom. Adjacent cultivation containers are connected through overflow tubes. The top of the overflow tube is higher than the preset height of the cultivation container. The bottom of the water storage container is connected with the drip tube. The drip tube is provided with the floating tube. The top of the floating tube is provided with the counterweight. The floating tube floats up and down with the water level in the water storage container. The counterweight is used to adjust the height of the floating tube exposed above the water surface. A water flow channel is formed between the floating tube and the drip tube. The water discharged from the water flow channel flows downward along the inner wall of the drip tube. The inner cavity of the drip tube below the floating tube forms an air-filled cavity.

[0006] Further, the outer side surface of the bottom of the floating tube is provided with a convex ring. The convex ring and the drip tube form a water outlet gap. The inner edge of the convex ring is provided with an inclined chamfer.

[0007] Further, the convex ring is an elastic air ring, the elastic air ring is communicated with an air nozzle, and a plurality of vertical convex ribs are arranged on the outer side wall of the elastic air ring.

[0008] Further, the elastic air ring is connected to the air nozzle through a trachea, and the air nozzle is arranged at the top of the floating tube.

[0009] Further, the floating tube includes a hollow tube and a buoyancy block, the diameter of the buoyancy block is larger than that of the hollow tube, the lower part of the buoyancy block is immersed in water, and the counterweight is placed on the buoyancy block.

[0010] Further, the counterweight is annular.

[0011] Further, the buoyancy block is disc-shaped.

[0012] Further, a diversion line is connected to the bottoms of the drip tube and the overflow tube, and the liquid discharged from the drip tube and the overflow tube flows along the diversion line into the cultivation container below.

[0013] The beneficial effects of the present invention are as follows:

[0014] During the process of reducing the water volume in the water storage container of the present invention, the pressure at the bottom of the water flow channel is constant, so that the dripping speed of the water droplets remains stable. At the same time, the depth of the floating tube inserted into the water can be adjusted by the counterweight, thereby adjusting the dripping speed of the water droplets. When used for the first time and reused, there is no need to disassemble the equipment or pre-fill the drip tube with water, and water can be directly added to the water storage container. No noise is generated during the process of the water storage container discharging water, and it can be completely silent if the sound of the water droplets falling and hitting is eliminated. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only the preferred embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a schematic structural diagram of a drip device for a flooding experiment of the present invention;

[0017] Figure 2 It is a schematic structural diagram of the water storage container of the present invention;

[0018] Figure 3 It is a schematic structural diagram of the convex ring of the present invention;

[0019] In the figure, 1 is a storage rack, 2 is a water storage container, 3 is a cultivation container, 4 is a drip tube, 5 is a floating tube, 6 is an overflow tube, 7 is a counterweight, 8 is a water flow channel, 9 is a convex ring, 10 is a water outlet gap, 11 is a chamfer, 12 is an air nozzle, 13 is a convex rib, 14 is an air tube, 15 is a hollow tube, 16 is a buoyancy block, and 17 is a guide line. Detailed implementation manner

[0020] To better understand the technical content of the present invention, specific embodiments are provided below, and the present invention will be further described in conjunction with the accompanying drawings.

[0021] See Figures 1 to 3 , a drip device for a flooding experiment, including a storage rack 1, a water storage container 2, a cultivation container 3, a drip tube 4, a floating tube 5, an overflow tube 6 and a counterweight 7. The storage rack 1 is successively provided with the water storage container 2 and several cultivation containers 3 from top to bottom. Adjacent cultivation containers 3 are connected through an overflow tube 6. The top of the overflow tube 6 is higher than a preset height of the cultivation container 3. The bottom of the water storage container 2 is connected with the drip tube 4. The floating tube 5 is arranged in the drip tube 4. The counterweight 7 is arranged at the top of the floating tube 5. The floating tube floats up and down with the water level of the water storage container 2. The counterweight 7 is used to adjust the height of the floating tube 5 exposed above the water surface. A water flow channel 8 is formed between the floating tube 5 and the drip tube 4. The water discharged from the water flow channel 8 flows downward along the inner wall of the drip tube 4. The inner cavity of the drip tube 4 below the floating tube 5 forms a cavity filled with air.

[0022] When conducting the waterlogging experiment, put the soil matrix into the cultivation container 3 and plant the plants to be experimented. The cultivation container 3 and the water storage container 2 are placed at appropriate positions on the storage rack 1. Add water into the water storage container 2. A drip tube 4 is connected to the bottom of the water storage container 2. A floating tube 5 is arranged in the drip tube 4. A water flow channel 8 is formed between the floating tube 5 and the drip tube 4. The water in the water storage container 2 is discharged downward along the water flow channel 8. The flow rate of the water discharged from the water flow channel 8 is positively correlated with the hydraulic pressure at its end. The water discharged from the water flow channel 8 flows downward along the inner wall of the drip tube 4, so that an air-filled cavity is formed in the inner cavity of the drip tube 4 below the floating tube 5. Since an air-filled cavity is formed in the inner cavity of the drip tube 4 below the floating tube 5, an effective water flow channel 8 is formed above the floating tube 5. Therefore, the hydraulic pressure at the end of the water flow channel 8 is equal to the hydraulic pressure formed from the bottom of the floating tube 5 to the liquid level of the water storage container 2. The floating tube 5 of the present invention floats in the water. When the liquid level drops, the floating tube 5 also drops accordingly. Therefore, the distance from the bottom of the floating tube 5 to the water surface of the water storage container 2 is always adjusted to be the same, so that the pressure received by the water droplet discharge remains unchanged. When the water volume in the water storage container 2 decreases, the water droplets can also drip downward evenly, which is convenient for controlling the duration of waterlogging and reducing experimental errors. The counterweight 7 is used to adjust the immersion depth of the floating tube, so as to adjust the dripping speed of the water droplets. The counterweight 7 can be placed according to the required water droplet speed. When the present invention is used for the first time, directly add water into the water storage container 2, and then place the counterweight 7 to use it. There is no need to pre-fill the pipeline with water, and the operation is convenient. After adding water, use the counterweight 7 to press the floating tube downward to reduce the influence of the friction between the floating tube and the drip tube 4 on the water droplet speed. After adding the counterweight 7, the friction, gravity and buoyancy are balanced. When the water surface drops, the floating tube also drops accordingly. The water dripping from the water storage container 2 enters the uppermost cultivation container 3. When the liquid level of the uppermost cultivation container 3 reaches the moving height, the water overflows from the overflow pipe 6 and is discharged to the cultivation container 3 on the next layer. Finally, different waterlogging times are formed for the plants to be experimented at different height positions.

[0023] Specifically, the outer side surface of the bottom of the floating tube 5 is provided with a convex ring 9. The convex ring 9 and the drip tube 4 form a water outlet gap 10. The inner edge of the convex ring 9 is provided with an inclined chamfer 11. The convex ring 9 is arranged at the bottom of the floating block, so that the gap between the floating tube 5 and the drip tube 4 is larger, more water is retained between the floating tube 5 and the drip tube 4, the water layer thickness between the tube walls is large, the influence of water flow adhering to the wall is reduced, and the water droplets are more uniform. The inner edge of the convex ring 9 is provided with an inclined chamfer 11, which can make the water flow downward along the inner wall of the drip tube 4, form a stable cavity in the inner cavity of the drip tube 4, and promote the stability of the water flow.

[0024] Specifically, the convex ring 9 is an elastic air ring, the elastic air ring is communicated with a nozzle 12, and a plurality of vertical convex ribs 13 are arranged on the outer side wall of the elastic air ring. Gas is filled into the elastic air ring through the nozzle 12. After the elastic air ring expands, it contacts the inner wall of the drip tube 4. By adjusting the air pressure of the elastic air ring, the fitting degree between the convex ring 9 and the inner wall of the drip tube 4 can be adjusted. The convex ribs 13 can prevent the convex ring 9 from completely blocking the water flow channel 8, facilitating the downward dripping of water.

[0025] The present invention can also adjust the dripping speed by adjusting the air pressure in the elastic air ring, so the dripping time can be set. For example, when dripping water into the cultivation container for 2 hours to reach the preset height of the waterlogging end of the liquid level, the waterlogging time intervals of different cultivation containers can be 2 hours. It can be understood that the interval time can also be set to any time between 3 and 10 hours.

[0026] Specifically, the elastic air ring is connected to the nozzle 12 through a trachea 14, and the nozzle 12 is arranged at the top of the floating tube. The elastic air ring can be inflated and deflated at the top of the floating tube, which is convenient for operation. Optionally, the trachea 14 can be communicated with a pressure valve, and the pointer of the pressure valve can be used to judge the air pressure in the elastic air bag, so as to judge the dripping speed and then control the dripping time.

[0027] Specifically, the floating tube 5 includes a hollow tube 15 and a buoyancy block 16. The diameter of the buoyancy block 16 is larger than that of the hollow tube 15. The lower part of the buoyancy block 16 is immersed in water, and the counterweight 7 is placed on the buoyancy block 16. The buoyancy block 16 plays a role in providing buoyancy, and the hollow tube 15 ensures that a cavity is formed at the bottom of the floating tube. When the liquid level in the water storage container 2 rises and falls, the buoyancy block 16 also rises and falls accordingly, so as to ensure that the pressure at the bottom of the water flow channel 8 remains stable. The counterweight 7 is used to adjust the draft depth of the buoyancy block 16. The counterweight 7 is used to eliminate the influence of the friction between the floating tube and the drip tube 4. The counterweight 7 is put in after adding water to the water storage container 2.

[0028] Specifically, the counterweight 7 is annular. It can maintain balance after being placed on the buoyancy block 16.

[0029] Specifically, the buoyancy block 16 is disc-shaped. It can stably drive the hollow tube 15 to move.

[0030] Specifically, a guide wire 17 is connected to the bottoms of the drip tube 4 and the overflow pipe 6. The liquid discharged from the drip tube 4 and the overflow pipe 6 flows along the guide wire 17 into the lower cultivation container 3. The guide wire 17 can be a flexible rope. The discharged water droplets flow downward along the guide wire 17, avoiding the noise generated by the impact of water droplets. When the water level in the water storage container 2 of the present invention decreases, the water flow will not generate noise either, enabling the entire container to work silently and avoiding noise pollution.

[0031] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A drip device for a flooding experiment, characterized in that, It includes a storage rack, a water storage container, cultivation containers, a drip tube, a floating tube, an overflow tube and a counterweight. The storage rack is successively provided with the water storage container and several cultivation containers from top to bottom. Adjacent cultivation containers are connected through the overflow tube. The top of the overflow tube is higher than the cultivation container by a preset height. The bottom of the water storage container is connected with the drip tube. The floating tube is arranged in the drip tube. The counterweight is arranged at the top of the floating tube. The floating tube floats up and down with the water level in the water storage container. The counterweight is used to adjust the height of the floating tube exposed above the water surface. A water flow channel is formed between the floating tube and the drip tube. The water discharged from the water flow channel flows downward along the inner wall of the drip tube. The inner cavity of the drip tube below the floating tube forms an air-filled cavity; the floating tube is provided with a convex ring on the outer side surface of the bottom. The convex ring and the drip tube form a water outlet gap. The inner side edge of the convex ring is provided with an inclined chamfer; the convex ring is an elastic air ring. The elastic air ring is connected with an air nozzle. The outer side wall of the elastic air ring is provided with several vertical convex ribs; the floating tube includes a hollow tube and a buoyancy block. The diameter of the buoyancy block is larger than that of the hollow tube. The lower part of the buoyancy block is immersed in water. The counterweight is placed on the buoyancy block.

2. The drip device for a flooding experiment according to claim 1, characterized in that, The elastic air ring is connected with the air nozzle through an air tube. The air nozzle is arranged at the top of the floating tube.

3. The drip device for the water flooding experiment according to claim 1, characterized in that, The counterweight is annular.

4. The drip device for a flooding experiment according to claim 1, characterized in that, The buoyancy block is disc-shaped.

5. A drip device for a flooding experiment according to claim 1, characterized in that, The bottom of the drip tube and the overflow tube is connected with a diversion line. The liquid discharged from the drip tube and the overflow tube flows into the lower cultivation container along the diversion line.

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