CN108040701B - Automatic rain cover suitable for tall and big crops - Google Patents

Abstract

The present invention provides an automatic rain cover suitable for tall crops, comprising: the double-layer pipe is in a spiral structure, is integrally coiled into a cylindrical structure with a frustum shape, and comprises a hard pipe and a thin film pipe, wherein the thin film pipe is hermetically sleeved outside the hard pipe, the extending directions of the hard pipe and the thin film pipe are consistent, and a plurality of through holes are formed in the hard pipe; the rain sensor is used for detecting rainfall and sending a rainfall signal; the blower is connected with the hard pipe and is used for conveying air flow to the hard pipe; the controller, sense rain sensor, blower connection, after the controller received the rainfall signal that the rain sensor sent, start the blower to the hard tube carries the air current, the film pipe swell and closely be close to each other for the bilayer pipe forms seal structure, avoids rainfall to pass through. The invention can simply and quickly realize rain shielding without moving a crop cultivation container.

Description

Automatic rain cover for tall crops

Technical field

The invention relates to the technical field of crop science research, and in particular to an automatic rainproof cover suitable for tall crops.

Background technique

Barrel/pot experiments are a common method for crop science research, and rainfall is often required to be shaded during barrel/pot experiments. Conventional methods include the following:

First, regardless of barrel planting or potted planting, the cultivation containers (barrels, pots) used can be moved. Therefore, they can be moved manually to avoid rain before precipitation occurs, for example, the cultivation containers can be moved under the greenhouse or indoors. The disadvantage of this method is that it requires a lot of manpower, especially for crops with larger plants, such as corn, cotton, and sorghum. Since the cultivation containers are large and heavy, it is very arduous to move them, and frequent movement will cause damage to the crop roots and crowns. Each layer will produce large disturbances, affecting the test results.

Second, use rainproof sheds to cover rainfall. This method requires the rainproof shed to completely cover the canopy, which affects the canopy microenvironment such as canopy light, temperature, and humidity. It will also affect the physiological and ecological processes of the crop and affect the experimental results.

In addition, cultivation containers for crops with smaller plants are smaller and easier to move. Although the above problems exist, they are not obvious. However, for crops with larger plants, the above problems are more prominent.

Therefore, it is necessary to develop a rain-shielding solution suitable for cultivation containers of tall crops such as corn, cotton, and sorghum, which can prevent rain without significantly disturbing the plant canopy microenvironment.

Contents of the invention

The object of the present invention is to provide an automatic rainproof cover suitable for tall crops, so as to solve the problem in the prior art that crop cultivation containers cannot automatically block rain.

In order to solve the above problems, the present invention provides the following technical solutions:

An automatic rainproof cover suitable for tall crops, which includes: a double-layer tube with a spiral structure, the whole spiraling into a truncated cone-shaped cylindrical structure, and includes a hard tube and a film tube, and the film tube is airtightly set in On the outside of the hard tube, the hard tube and the film tube extend in the same direction. The hard tube is provided with a plurality of through holes connected with the film tube; a rain sensor is used to detect rainfall and send a rainfall signal; the blower An air machine is connected to the hard pipe and is used to transport air flow to the hard pipe and inflate the film tube; a controller is connected to the rain sensor and the air blower. When the controller receives the rain sensor After the rainfall signal is sent by the sensor, the air blower is started to deliver air flow to the hard tube, and the film tubes bulge and come close to each other, so that the double-layer tubes form a sealed structure to prevent rainfall from passing through.

Preferably, it also includes: a pressure sensor, connected to the inside of the hard tube or film tube to detect the pressure inside the hard tube or film tube, and connected to the controller to send a pressure signal to the controller. .

Preferably, it also includes: an air suction machine, connected to the hard pipe, used to pump out the gas inside the double-layer pipe, and connected to the controller at the same time. When the rainfall stops, the controller controls the suction machine. The gas machine extracts the gas inside the double-layer tube.

Preferably, it also includes: an electromagnetic three-way valve, the outlet is connected to the hard pipe, the two inlets are connected to the blower and the air suction machine respectively, and are electrically connected to the controller.

Preferably, the film tube is made of rubber.

Analysis shows that the double-layer tube provided by the present invention is a frustum-shaped cylindrical structure. When the crop is large, it can be set at the base of the crop (the lower part of the stem, close to the bottom), and when it rains, it can be quickly inflated inside. , the film tube bulges to form a structure similar to an umbrella, thereby preventing rainfall from falling into the crop cultivation container. When the rainfall ends, the film tube is no longer inflated, and the film tube shrinks and sticks to the hard tube. It can be seen that the present invention does not require moving the animal cultivation container, and can prevent rainfall from entering the cultivation container simply and quickly.

Description of the drawings

Figure 1 is a schematic diagram of the principle structure of an embodiment of the present invention;

Figure 2 is a schematic cross-sectional structural diagram of a double-layer tube according to an embodiment of the present invention (internal inflation);

Figure 3 is a schematic diagram 2 of the cross-sectional structure of the double-layer tube according to the embodiment of the present invention (after inhalation, the film tube is deflated).

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1, an embodiment of the present invention provides an automatic rain cover suitable for tall crops. In order to describe this embodiment more clearly, Figure 1 also shows the application scenario of this embodiment: tall crops (corn , cotton, etc.) 100 is grown in a cultivation container (barrel, pot, etc.) 200. This embodiment is located above the cultivation container 200 and is set on the base (lower part of the stem) 101 of the crop 100. The function of the embodiment of the present invention is to cover the top of the cultivation container 200 to prevent precipitation from falling on the soil below the crop 100, but without affecting the main illumination, temperature, humidity and other microclimate parameters of the above-ground part of the crop, so as to obtain more accurate crops. Specific parameter data such as water consumption and water demand.

As shown in Figures 1, 2, and 3, the embodiment of the present invention includes a double-layer pipe 3, a pressure sensor 4, an electromagnetic three-way valve 5, an air blower 6, an air suction machine 7, a controller 8, and a rain sensor 9 .

Specifically, the double-layer tube 3 has a spiral structure, and the whole spirals into a frustum-shaped cylindrical structure. The reason why it is designed as a cylindrical structure is that the crops 100 need to pass through it. The reason why it is formed into a frustum is that after rainfall, the raindrops can naturally flow down from top to bottom; in addition, the upper end is shrunk and thinner, and can be more tightly wrapped around the base 101 of the crop 100, basically preventing rainwater from falling onto the cultivation container 200.

As shown in Figures 2 and 3, the double-layer tube 3 includes a hard tube 1 and a film tube 2. The film tube 2 is hermetically mounted on the outside of the hard tube 1. The extension directions of the hard tube 1 and the film tube 2 are the same, except for the hard tube 1. When tube 1 needs to be connected to the sensor and blower, the hard tube 1 is basically located in the film tube 2. The hard tube 1 includes a tube wall 11. The tube wall 11 is provided with a plurality of through holes 10. The inside of the tube wall 11 is a cavity 12. The cavity 12 communicates with the inside of the film tube 2 through the through holes 10. The hard tube 1 can be made of stainless steel (thin and easy to bend) or a plastic material with higher strength. The film tube 2 can be made of rubber material with good elasticity and aging resistance. It is best to use medical grade rubber.

The rain sensor 9 is used to detect rainfall and send a rainfall signal to the controller 8 electrically connected to it for the controller 8 to make a judgment.

The air blower 6 is connected to the hard pipe 1 and is used to deliver air flow to the hard pipe 1 . Preferably, one end of the hard tube 1 extends out of the film tube 2 and is connected to the blower 6 . Of course, a separate connecting pipe can also be set up to insert a connecting hard pipe inside the double-layer pipe. The air blower 6 is also connected to the controller 8, and its operation and stop are controlled by the controller 8.

In use, after the controller 8 receives the rainfall signal sent by the rain sensor 9, it starts the air blower 6 to deliver air flow to the hard tube 1, and the air flow in the cavity 10 is input into the film tube 2 through the through hole 11, and the film tube 2 The double-layered tubes 3 form a sealed rainproof cover structure to prevent rainfall from passing through and falling into the soil of the cultivation container 200 .

In order to avoid excessive pressure inside the membrane tube 2, safety valves, pressure relief valves, etc. can be installed on the membrane tube 2 and on the exposed portion of the hard tube 2.

In order to make the control of this embodiment more efficient and stable, this embodiment also includes a pressure sensor 4, which is internally connected to the hard tube 1 or the thin film tube 2 to detect the pressure inside the hard tube 1 or the thin film tube 3, and at the same time communicates with the controller 8 connection to send a pressure signal to controller 8. Preferably, the other end of the hard tube 1 extends out of the film tube 2 and is connected to the pressure sensor 4 .

At the end of the rainfall, in order to quickly ventilate the base 101 of the crop 100, this embodiment also includes an air aspirator 7, which is also connected to the cavity 10 of the hard pipe 1 for extracting the gas inside the double-layer pipe 3, and at the same time communicates with the control The controller 8 is electrically connected. When the rainfall stops, the controller 8 controls the air aspirator 7 to extract the gas inside the double-layer pipe 3.

In order to simplify the structure of this embodiment and improve the control accuracy, this embodiment includes an electromagnetic three-way valve 5, the outlet of which is connected to the hard pipe 1, and the two inlets are connected to the blower 6 and the suction machine 7 respectively, and at the same time The controller 8 is electrically connected.

When this embodiment is used, when rainfall occurs, the rain sensor 9 sends a rainfall signal to the controller 8, the controller 8 starts the air blower 6, and opens the connection between the air blower 6, the electromagnetic three-way valve 5, and the hard pipe 1 passage, the film tube 2 bulges (Fig. 2), the double-layer tube 3 forms a sealed rain cover, and rainwater flows down from the edge (the circular edge formed by the lower end of the double-layer tube 3 is larger than and lower than the edge of the cultivation container) and does not fall into the cultivation container. in container 3.

When the pressure in the film tube 2 reaches the set value, the controller 8 controls the blower 6 to brake, and the electromagnetic three-way valve 5 is turned off. When the pressure decreases, the controller 8 starts the blower 6 and the electromagnetic three-way valve 5 again.

When the rainfall ends (or after a period of time), the controller 8 stops the operation of the air blower 6, opens the passage between the air suction machine 7, the electromagnetic three-way valve 5, and the hard pipe 1, and quickly removes the air in the double-layer pipe 3. Gas, the film tube 2 shrinks, dries up, and sticks to the outside of the hard tube 1 (as shown in Figure 3), thereby not affecting the ventilation and gas exchange of the base 101.

To sum up, the present invention can realize automatic rain protection without moving the crop cultivation containers, thereby avoiding adverse effects on crops caused by movement (loose soil, damage to stems and leaves, etc.). In addition, the present invention is not only suitable for tall crops, but also can be used for taller forest tree experiments.

It is known from common technical knowledge that the present invention can be implemented by other embodiments without departing from its spirit or essential characteristics. Therefore, the above-disclosed embodiments are in all respects illustrative and not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims (4)

1. An automatic rain cover suitable for tall crops, which is characterized by including: The double-layer tube is set at the base of the crop and covered above the cultivation container. It has a spiral structure and is spiraled into a frustum-shaped cylindrical structure as a whole. It includes a hard tube and a film tube, and the film tube is hermetically placed on the Outside the hard tube, the hard tube and the film tube extend in the same direction. The hard tube includes a tube wall. The tube wall is provided with a plurality of through holes. The inside of the tube wall is a cavity. The cavity The through hole communicates with the inside of the film tube; Rain sensor, used to detect rainfall and send rainfall signals; An air blower is connected to the hard pipe and used to deliver air flow to the hard pipe; A controller is connected to the rain sensor and the air blower. After the controller receives the rainfall signal sent by the rain sensor, it starts the air blower to deliver air flow to the hard tube. The film tube The double-layered tubes are bulged and brought closely together to form a sealed structure to prevent rainfall from passing through; It also includes: an air suction machine, connected to the hard pipe, used to pump out the gas inside the double-layer pipe, and connected to the controller at the same time. When the rainfall stops, the controller controls the air suction machine to pump out the gas. gas inside the double tube. 2. The automatic rainproof cover suitable for tall crops according to claim 1, further comprising: a pressure sensor connected to the inside of the hard tube or film tube to detect the inside of the hard tube or film tube. pressure, and is connected to the controller at the same time to send a pressure signal to the controller. 3. The automatic rainproof cover suitable for tall crops according to claim 1, further comprising: an electromagnetic three-way valve, the outlet is connected to the hard pipe, and the two inlets are connected to the air blower and the air blower respectively. The aspirator is connected and electrically connected to the controller. 4. The automatic rainproof cover suitable for tall crops according to claim 1, characterized in that the film tube is made of rubber.