TWI578898B - Plant cultivation unit and its three-dimensional green wall - Google Patents

Description

Plant cultivation unit and three-dimensional green wall with the same

The present invention relates to a plant cultivation unit and a three-dimensional green wall therewith, and more particularly to a technical field to which the plant cultivation equipment and apparatus are applied.

With the rapid development of the economy, people's requirements for quality of life and living environment are getting higher and higher. It is a desire of people to get rid of urban cement and improve local ecological environment. The landscaping industry has developed from ground greening to building space greening. Building space greening is divided into wall greening, roof greening and balcony terrace greening. Wall greening has a beautifying environment and returns to nature; energy saving and environmental protection make the building indoors warm in winter and cool in summer; create a healthy and natural living environment; improve urban heat island effect, reduce urban drainage load; vacuum and noise reduction, purify air and improve city Environmental quality, increasing green coverage, improving urban ecological environment, reducing light pollution, reducing light radiation, etc., and because of its low carbon, energy saving, high plant richness, safety and other factors have become the focus of attention. Therefore, the three-dimensional greening device with plant planting function has a good market prospect.

It is an object of the present invention to provide a plant cultivation unit that is reliable to install and easy to disassemble.

Another object of the present invention is to provide a three-dimensional green wall composed of plant cultivation units to realize modular assembly of the green wall.

Another object of the present invention is to provide an automatic irrigation system for a three-dimensional green wall to automate irrigation.

In order to achieve the above object, the present invention adopts the following technical solution: a plant cultivation unit comprising: The box body defines an installation space of the plant basin, the box body is provided with a watering port, and the bottom of the box body is provided with a drain pipe, and the drain pipe is located at the end of the box body to form a drain port, and is opened on one side wall of the box body. a through hole through which the plant pot body passes; a plant pot body passing through the through hole such that at least a portion thereof is placed in the tank, and a water inlet is provided in a portion of the plant pot body located in the tank body a limiting device configured to tilt the plant basin in the cabinet, and the height of the water inlet is lower than the height of the drain.

As a preferred solution, the limiting device includes: a limiting hole disposed on the first sidewall of the box above the through hole; and a limiting member disposed on the sidewall of the plant basin, and the limiting Corresponding to the bit hole, the plant basin is obliquely inserted into the through hole, at least a part of which is placed in the box, the limiting member is coupled with the limiting hole, and/or the plant The second side wall of the basin opposite the first side wall of the box abuts.

As a preferred solution, the limiting member is a hook that folds down the hook at the lower edge of the limiting hole; or the limiting member is stuck in the limiting hole after passing through the limiting hole. An elastic buckle between the upper edge and the lower edge, and/or the elastic buckle is provided with an elastic snap protrusion that prevents the elastic buckle from excessively passing through the limiting hole.

As a preferred solution, the limiting device includes: a limiting protrusion disposed on an inner side of the other side wall of the box opposite to the side wall of the through hole; and a limiting groove opening in the plant Matching the limiting protrusion, the plant basin passes through the through hole, at least a part of which is placed in the box, and the limiting protrusion is inserted into the limiting concave Within the trough, and/or, the plant pot body abuts against another side wall of the box opposite the side wall in which the through hole is opened; and/or, The limiting device includes: a limiting member disposed on a sidewall of the box to open the through hole; a limiting hole disposed on a sidewall of the plant basin, and the limiting member Correspondingly, the plant basin is obliquely inserted into the through hole, at least a part of which is placed in the box, the limiting member is coupled with the limiting hole, and/or the plant basin is The other side wall of the casing on which the side wall of the through hole is opened abuts.

As a preferred solution, the first end of the drain pipe in the casing forms a first drain port, and the second end of the drain pipe opposite to the first end portion forms a second drain port. The first drain port and the second drain port are arranged in a staggered arrangement in a vertical plane.

As a preferred solution, the bottom of the box protrudes outwardly to provide a coupling protrusion for connecting with the adjacent box body, and a recess structure matching the coupling protrusion is disposed at the top of the box body.

As a preferred solution, the other side wall of the box opposite to the side wall provided with the through hole is provided with a box mounting portion for fixing the box to the area to be greened.

A three-dimensional green wall comprising at least two plant cultivation units, the three-dimensional green wall further comprising an irrigation system, the irrigation system comprising: a water supply device, the water supply outlet is connected to the watering port, at least one Plant cultivation unit water supply; liquid level detecting device is arranged in the box for detecting the liquid level of the irrigation water in the tank; the control system electrically connects the water supply device and the liquid level detecting device, and is detected according to the liquid level element The liquid level condition detected by the device controls the water supply of the water supply device and/or stops the water supply.

As a preferred solution, the three-dimensional green wall has a cultivation unit row formed by at least two plant cultivation units arranged in an upper and lower structure; and a first liquid level element is arranged in a plant cultivation unit at the bottom of the cultivation unit column. a detecting device and a second liquid level detecting device; The first set liquid level and the second set liquid level are set in the tank body, and when the first liquid level detecting device detects that the actual liquid level in the tank is lower than the first set liquid level, the control system controls the water supply of the water supply device When the second liquid level detecting device detects that the actual liquid level in the tank reaches the second set liquid level, the control system controls the water supply device to stop the water supply.

As a preferred solution, the three-dimensional green wall has a plurality of rows of cultivation units arranged in parallel with each other, and the plant cultivation units adjacent in the horizontal direction are connected by pipes.

The invention has the beneficial effects that the plant cultivation unit provided in the invention can ensure that the connection between the plant pot body and the box body is relatively fixed, and the plant pot body is obliquely installed in the box body, and the two are not It can be easily loosened and can prevent the loss of the plant basin. The three-dimensional green wall provided by the invention has the control function of detecting the water level by the liquid level detecting device for water supply and stopping the water supply, and realizes automatic watering.

1‧‧‧ cabinet

2‧‧‧plant basin

3‧‧‧Drainage pipe

4‧‧‧First side wall

5‧‧‧second side wall

6‧‧‧through hole

7‧‧‧ Inlet

8‧‧‧Limited holes

9‧‧‧ hook

10‧‧‧Flexible buckle

11‧‧‧Limited bulges

12‧‧‧ Limit groove

13‧‧‧Sloping surface

14‧‧‧Installation slot

15‧‧‧L-shaped bulge

16‧‧‧Box mounting holes

17‧‧‧ Pipes

18‧‧‧ window

19‧‧‧U-shaped bulge

20‧‧‧First induction probe

21‧‧‧Second induction probe

22‧‧‧Connecting line

23‧‧‧First set level

24‧‧‧Second setting level

25‧‧‧Induction probe

26‧‧‧Probe

27‧‧‧ Positioning block

28‧‧‧ screw

31‧‧‧First drain

32‧‧‧Second drain

33‧‧‧Flexible buckle bulge

34‧‧‧Installation rod

35‧‧‧Limited parts

[Fig. 1] is a schematic view showing the three-dimensional structure of a plant cultivation unit.

[Fig. 2] is a schematic view showing the structure of a box in which a finite bit hole is provided.

[Fig. 3] is a schematic view showing the structure of a plant pot provided with a hook.

[Fig. 4] is an assembly view of a tank body in which a limit hole is provided and a plant pot body provided with a hook.

[Fig. 5] is a schematic view showing the structure of a plant pot body provided with an elastic buckle.

FIG. 6 is a left side view of FIG. 5.

[Fig. 7] is an assembly view of a tank body in which a limit hole is provided and a plant pot body provided with an elastic snap.

[Fig. 8] is a schematic view showing the structure of a plant pot body in which a limited hole is provided.

[Fig. 9] is a schematic view showing the structure of a box in which a limit position element is provided.

[Fig. 10] is a schematic view showing the structure of a box in which a finite bit protrusion is provided.

[Fig. 11] is a schematic view showing the structure of a plant pot body in which a finite groove is provided.

[Fig. 12] is an assembly diagram of a plant body in which a finite-position convex body is provided and a finite-position groove is provided.

Fig. 13 is a schematic perspective view showing a plant cultivation unit provided with two through holes and a plant pot.

Fig. 14 is a bottom view of a plant cultivation unit provided with two through holes and a plant pot.

Fig. 15 is a front view of a plant cultivation unit provided with two through holes and a plant pot.

Fig. 16 is a schematic perspective view showing a combined structure of plant cultivation units provided with two through holes and a plant pot.

[Fig. 17] is a schematic view showing the structure of a three-dimensional green wall.

[Fig. 18] is a side view of a three-dimensional green wall structure.

[Fig. 19] is a schematic structural view of a liquid level detecting device.

[Fig. 20] is a schematic diagram of the operation of the control system.

[Fig. 21] is a flow chart of the operation of the irrigation system.

[Fig. 22] is a schematic structural view of an inductive probe.

[Fig. 23] is an exploded view of the mounting structure of the induction probe.

[Fig. 24] is a schematic view showing the assembly structure of the induction probe.

[Fig. 25] is a schematic view showing the structure of a drain pipe.

The structure, features and other objects of the present invention will be further described in the following detailed description of the preferred embodiments of the present invention. It is not the only restriction on patent applications.

The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

A plant cultivation unit according to the present invention comprises: a box body, a plant pot body and a limit element device for connecting the box body and the plant pot body.

The box body is used for defining a installation space of the plant pot body, and a side wall of the box body is provided with a through hole for allowing the plant pot body to pass through a part of the plant pot body, and the box body is provided with a watering port A drainage structure is provided at the bottom of the cabinet.

Referring to FIG. 2, a through hole 6 is formed in the first side wall 4 of the casing 1. The through hole 6 is an elliptical hole. Those skilled in the art may know that the through hole may also be a circular hole or a square hole, as long as the energy is satisfied. The plant basin can be passed through and placed in the box.

For the pouring port, as shown in Fig. 1, the box body is designed as a rectangular body structure, and the top portion is an open structure to form a watering port. Those skilled in the art will appreciate that the cabinet only needs to have a space inside which the plant pot is installed, and is provided with a structure for watering.

For the drainage structure, as shown in Fig. 1, a drain pipe 3 is provided at the bottom of the tank 1. A person skilled in the art may know that the drainage structure is not limited to the drainage pipe, and may also be provided with a drainage channel type structure; at the same time, the drainage pipe may be disposed perpendicularly to the bottom of the casing, and the drainage pipe may also be inclined with the bottom of the casing, and the purpose thereof It is to keep a certain amount of water in the box, and it will not cause the water of the irrigation to be quickly lost, thereby providing a good and reliable living environment for plants and the like.

The plant basin can pass through the through hole, the bottom is located in the box body, the opening part is located outside the box body (see FIG. 1), the bottom of the plant pot body is provided with a water inlet; and the bottom of the plant pot body is covered with water permeable The material is used to filter to prevent debris in the plant pots such as sludge from entering the tank. For example, as shown in FIG. 6, the plant pot 2 is designed as a cylindrical structure, and a plurality of water inlets 7 are uniformly formed at the bottom thereof. It is known to those skilled in the art that the structural form of the plant pot and the structural form of the water inlet include but not Limited to the structural form shown, the plant pot can also be designed as a square or the like.

The limiting device of the plant cultivation unit of the invention can install the plant basin obliquely in the box body, and the plant basin body is inclined to install the purpose of: the height of the water inlet of the plant basin is lower than the height of the water outlet of the box body In this way, it is possible to ensure the moisture in the plant basin when there is moisture in the cabinet.

As shown in FIG. 2, the above-mentioned limiting device includes a limiting hole 8 disposed on the first side wall 4 of the casing 1 above the through hole 6, and is disposed on the side wall of the plant basin 2 and the limiting hole 8 Correspondingly, the bottom of the plant pot 2 is placed in the box 1 through the through hole 6 , and the limiting member is coupled with the limiting hole 8 .

As shown in FIGS. 3 and 4, the limiting member may be a hook 9 that folds down the hook at the lower edge of the limiting hole 8; or as shown in FIGS. 5, 6, and 7, the limiting member is a passing portion. The elastic buckle 10 is caught between the upper edge and the lower edge of the limiting hole 8 after the limiting hole 8 is described. In order to prevent the elastic buckle 10 and the limiting hole 8 from slipping during the clamping process, the elastic buckle is provided with an elastic snap protrusion 33.

It should be understood by those skilled in the art that the position of the limiting hole 8 and the limiting member in the above limiting device is not limited to the above example. As shown in FIGS. 8 and 9, the limiting hole 8 may also be disposed at The technical solution claimed in the present invention can also be realized by arranging the limiting member 35 on the side wall of the casing 1 on the plant basin 2.

As shown in FIG. 10, FIG. 11 and FIG. 12, the above-mentioned limiting device can also be a limit of the inner side of the other side wall (ie, the second side wall 5) of the side wall of the through hole 6 which is disposed on the casing 1. The position protrusion 11 and the matching groove 12 disposed at the bottom of the plant pot body 2 are matched therewith. The bottom of the plant pot 2 passes through the through hole 6 into the box body 1, and the limiting protrusion 11 is inserted into the limiting groove 12 to realize the restriction between the plant pot 2 and the box 1.

The plant pot 2 can also be mounted more securely against the second side wall 5 of the case 1 opposite the first side wall 4 by its bottom. The bottom surface of the plant pot 2 may have a flat structure, or may have an inclined surface 13 as shown in Figs. 3, 5, and 11 which can be placed in the casing 1 to be more stable.

Each of the plant cultivation units is not limited to being provided with a through hole 6 for accommodating the plant basin, as shown in FIG. 13, in which the two through holes 6 are provided and two are provided. The plant pot 2, each of which is separately installed in the casing 1 by a limit device.

The box body is further provided with a box mounting portion for fixing the box body to the area to be greened. For example, as shown in FIGS. 13, 14, 15, and 16, a mounting groove 14 for arranging the series case 1 is provided on the second side wall 5 of the case 1, and a case mounting hole 16 is opened at the bottom of the mounting groove 14, By providing the mounting rod 34 in the mounting groove 14, One or more cabinets 1 are sequentially mounted on the mounting rods to realize an overall series connection, and corresponding to the installation slots, a window 18 for facilitating operation of the cabinet mounting holes is formed on the first side wall 4 of the cabinet 1 The operator can screw the fasteners from the window 18 to the housing mounting holes 16 to secure the housing between the housing and the mounting bar. It can be known to those skilled in the art that the box mounting portion is not limited to the example in the figure, as long as the box can be fixed to the area to be greened, for example, a mounting hook can be disposed on the second side wall of the box, and the box body is installed. The hook is directly attached to the green surface to be toned.

A coupling protrusion for connecting with an adjacent box body is protruded outwardly from the bottom of the box body, and a recess structure matching the coupling protrusion is arranged at the top of the box body, and when the adjacent box bodies are coupled to each other, the bottom of the upper box body The coupling protrusions are inserted into the recessed structure at the top of the lower case to achieve a detachable connection between the two. The coupling protrusion may be provided with two U-shaped projections 19 at the bottom of the casing 1 as shown in FIG. 1, or an L-shaped projection 15 at the four corners of the bottom of the casing 1 as shown in FIG. A sheet-like projection provided at a position between the bottoms. Of course, those skilled in the art can know that the design positions of the coupling protrusions and the recessed structures can be interchanged, that is, the coupling protrusions are disposed at the top of the box body, and the recessed structure is disposed at the bottom of the box body when the adjacent box bodies are coupled with each other. The coupling protrusion at the top of the lower box is inserted into the recessed structure at the bottom of the upper box body, and the detachable connection of the two can also be realized.

Next, a three-dimensional green wall composed of the above plant cultivation unit will be described in detail. As shown in Figs. 16, 17, and 18, adjacent plant cultivation units are arranged above and below, and a cultivation unit column is formed. In the three-dimensional green wall, there are a plurality of cultivation unit rows arranged in parallel with each other, and the bottommost adjacent plant cultivation units are connected to each other through the pipe 17 through the bottom, so that the irrigation water inside the bottommost box 1 can circulate and maintain the water level. Consistent.

The three-dimensional green wall is provided with an irrigation system, and the irrigation system comprises a water supply device, and the water outlet of the water supply device is arranged above each plant cultivation unit in the uppermost layer of the first column of cultivation units, so that the irrigation water flows in through the watering port above the plant cultivation unit At the bottom of the tank 1 of the plant cultivation unit, since the bottom of the plant cultivation unit adjacent to the lowest level is connected, the irrigation water can flow into each of the cabinets 1 of the bottommost plant cultivation unit, so that the entire row of the tanks Uniform water level to prevent irrigation water spills in a plant cultivation unit Out, and a plant cultivation unit is lack of water. Of course, it will be understood by those skilled in the art that adjacent plant cultivation units of the uppermost layer and the intermediate layer may also communicate with each other through a pipe.

Each of the tanks 1 is provided with a drain pipe 3 at the bottom. When the water level in the tank 1 is higher than the height of the upper nozzle of the drain pipe 3, the irrigation water flows out through the drain pipe 3, and flows into the plant cultivation unit of the next row. 25 shows a structure of a drain pipe 3, the first end of the drain pipe is formed in the tank body to form a first drain port 31, and the second end portion of the drain pipe opposite to the first end portion forms a second drain port 32, The first drain port 31 and the second drain port 32 are arranged in a staggered arrangement in a vertical plane. When the water level in the tank 1 is higher than the height of the first drain, the irrigation water will flow out through the drain pipe 3. Since the structure of each plant cultivation unit is the same, in order to prevent the water of the upper tank from being directly discharged from the drain The drain pipe flowing into the lower tank cannot store moisture. The first drain port 31 and the second drain port 32 are arranged in a staggered arrangement in the vertical plane. Of course, those skilled in the art can know the structure of the drain pipe. It is not limited to the above example, and a straight pipe structure may be adopted, and then the straight pipe is inclined to the bottom of the tank, and the two drain ports of the drain pipe may be staggered in the vertical plane.

The irrigation system further includes a liquid level detecting device disposed in the box body, and a control device connected to the liquid level detecting device, wherein the liquid level element is detected by the liquid level detecting device, and the control device controls the water supply according to the detected liquid level element The device supplies water and/or stops the water supply.

In this embodiment, as shown in FIG. 19, a first liquid level detecting device and a second liquid level detecting device are disposed in the lowermost box, and the first liquid level detecting device includes the first sensing probe. 20, the second liquid level detecting device comprises a second sensing probe 21, and the first set liquid level 23 and the second set liquid level 24 are designed in the layer box, and the first set liquid level 23 is lower than the second set liquid level 24 When the first sensing probe 20 detects that the actual liquid level value in the box reaches the bottom lower limit liquid level element 23 preset by the first set liquid level 23, the control device controls the water supply device to start supplying water to the three-dimensional green wall. When the second sensing probe 21 detects that the liquid level value in the box is close to the second set liquid level 24, the control device controls the water supply device to stop supplying water to the three-dimensional green wall.

19 and 20 illustrate the operation principle of the control system. After the first inductive probe and/or the second inductive probe detects the water level signal, the signal is sent to the signal conversion circuit through the connection line 22, and the signal conversion circuit will be water. The bit signal is converted into an electrical signal and transmitted to the MCU control circuit. The MCU control circuit controls the relay to operate, thereby controlling the opening or closing of the water inlet solenoid valve to achieve automatic control of the water level.

Figure 21 shows the working flow chart of the irrigation system. First, the first liquid level detecting device is used to judge the water shortage level to determine whether there is water shortage in the three-dimensional green wall. When the judgment result is that there is no water shortage in the three-dimensional green wall, the control device When the work is finished, when the judgment result is that there is water shortage in the three-dimensional green wall, the control device controls the water inlet solenoid valve to open, and supplies water for the three-dimensional green wall. During the water supply process, the second sensing probe in the second liquid level detecting device detects the result of the full water level, and when the judgment result is that the water is not full, the water supply is continued. When the judgment result is full water, the control device controls the electromagnetic valve to be closed and stops. Water supply for the three-dimensional green wall.

In other embodiments of the present invention, a liquid level detecting device may be disposed in any of the cabinets other than the bottom layer, and the liquid level detecting device is also connected to the control device to monitor the liquid level of each layer.

22, 23, 24 are schematic diagrams showing the structure of the inductive probe and the mounting structure of the inductive probe. The inductive probe 27 has two probes 28 connected through a connecting plate, and a probe mounting hole is arranged in the middle of the connecting plate, and the two probes 28 are opposite to each other. The center of the probe mounting hole is axisymmetric.

The mounting structure of the sensing probe 27 includes a positioning block 29 and a screw 30. The housing 1 is provided with a positioning protrusion that cooperates with the positioning block 29. The positioning protrusion is mounted in the housing 1 through the positioning block 29, and the positioning block 29 is The positioning hole is provided, the sensing probe mounting hole is a threaded hole, the positioning hole corresponds to the size and position of the sensing probe mounting hole, and the screw 30 passes through the positioning hole from below and is screwed to the sensing probe 27 to detachably mount the sensing probe 27. In the box 1.

It is to be understood that the above-described embodiments are merely preferred embodiments of the invention and the technical principles of the invention, and any changes or substitutions that are readily apparent to those skilled in the art are within the scope of the presently disclosed technology. All should be covered by the scope of the present invention.

In summary, the present invention can achieve the above functions and purposes, so the present invention should meet the requirements of the patent application, and apply in accordance with the law.

1‧‧‧ cabinet

2‧‧‧plant basin

16‧‧‧Box mounting holes

18‧‧‧Window

34‧‧‧Installation rod

Claims (8)

A plant cultivation unit comprising: a plurality of boxes, a plurality of plant pots and a plurality of limit device, wherein: the plurality of box systems are stacked on each other, and each defines an installation space defining the plant basin, wherein the box body is provided with a watering port, a drain pipe is disposed at a bottom of the tank body, and a drain pipe is disposed at an end of the tank body to form a drain port, wherein the drain port communicates with the installation space of the plurality of tanks, and the plurality of tank drain ports are staggered from each other. The water of the tank with a relatively high height position is not directly flowed from the drain pipe into the drain pipe of the tank having a relatively low height position, and a through hole for the plant basin is opened on one side wall of the tank; the plant pot a body passing through the through hole so that at least a portion thereof is placed in the casing, and a water inlet is provided in a portion of the plant basin in the casing; a limit device is provided to make the plant basin The body is inclined and installed in the box body, and the height of the water inlet is lower than the height of the water outlet, wherein the limiting device comprises: a limiting hole, and the box body disposed above the through hole On one side wall; a positioning member disposed on a side wall of the plant basin, corresponding to the limiting hole, the plant basin is obliquely inserted into the through hole, at least a part of which is placed in the box, so that the limit a bit member is coupled to the limiting hole, and the plant basin body abuts against a second side wall opposite to the first side wall of the box body, wherein the limiting member is stuck after passing through the limiting hole An elastic snap between the upper edge and the lower edge of the limiting hole, and the elastic buckle is provided with an elastic snap protrusion that prevents the elastic buckle from excessively passing through the limiting hole. The plant cultivation unit of claim 1, wherein the limiting device comprises: a limiting protrusion disposed on an inner side of the other side wall of the casing opposite to the side wall of the through hole a limiting groove is formed on the plant basin to match the limiting protrusion, the plant basin passing through the through hole, at least a part of which is placed in the box, so that The limiting protrusion is inserted into the limiting groove. The plant cultivation unit according to claim 1, wherein the drain pipe is located at a first end of the casing to form a first drain port, and the drain pipe is opposite to the first end portion. The second end portion forms a second drain opening, and the first drain port and the second drain port are arranged in a staggered arrangement in a vertical plane. The plant cultivation unit according to the first aspect of the invention, wherein the bottom of the casing protrudes outwardly from a coupling protrusion for connecting with an adjacent casing, and the top of the casing is disposed at the top of the casing. The concave structure of the matching protrusion is matched. The plant cultivation unit according to claim 1, wherein the other side wall of the box opposite to the side wall provided with the through hole is provided with a box mounting portion for fixing the box to the area to be greened. . A three-dimensional green wall comprising at least two plant cultivation units according to any one of claims 1 to 5, wherein the three-dimensional green wall further comprises an irrigation system, the irrigation system comprising: a water supply device, water supply The device water outlet is connected to the watering port to supply water to at least one plant cultivation unit; the liquid level detecting device is disposed in the box body for detecting the liquid level of the irrigation water in the box body; the control system electrically connecting the water supply The device and the liquid level detecting device control the water supply of the water supply device and/or stop the water supply according to the liquid level condition detected by the liquid level detecting device. The three-dimensional green wall according to claim 6, wherein the three-dimensional green wall has a cultivation unit row formed by at least two plant cultivation units arranged in an upper and lower structure; at the bottom of the cultivation unit column a first liquid level detecting device and a second liquid level detecting device are disposed in the plant cultivation unit; the first set liquid level and the second set liquid level are set in the box body, and the first liquid level detecting device detects the box When the actual liquid level in the body is lower than the first set liquid level, the control system controls the water supply of the water supply device, and when the second liquid level detecting device detects that the actual liquid level in the tank reaches the second set liquid level, the control The system controls the water supply to stop the water supply. The three-dimensional green wall according to claim 7, wherein the three-dimensional green wall has a plurality of rows of cultivation units arranged in parallel with each other, and the plant cultivation units adjacent in the horizontal direction are connected by pipes.