Plant cultivation device simulating atmospheric dry and wet deposition

Abstract

The present invention relates to a device for simulating atmospheric dry and wet deposition, and discloses a plant cultivation device for simulating atmospheric dry and wet deposition, comprising a device housing, wherein the space inside the device housing is divided into a first compartment (31), a second compartment (32) and a third compartment (33) by a partition (1) and a suspended fine-mesh screen (2) arranged in sequence along the vertical direction therein; a water pipe (5) connected to a plurality of nozzles (4) is installed on the partition (1), and a plurality of fine holes (11) are opened on the partition (1); the fine-mesh screen (2) is connected to a gear speed regulating motor so as to be able to drive the fine-mesh screen (2) to continuously shake; a first fan (6) is arranged on the side wall of the first compartment (31), and a second fan (7) is arranged on the side wall of the third compartment (33). The present invention can better achieve the slow and uniform falling of simulated dry deposition particles and the long-term uniform spraying of wet deposition, ensure the self-pollination of plants, and reduce the influence of the greenhouse effect on the simulation experiment.

Description

Technical Field

[0001] The invention relates to a device for simulating atmospheric dry and wet deposition, in particular to a plant cultivation device for simulating atmospheric dry and wet deposition. Background Art

[0002] At present, the scientific research used to simulate the impact of atmospheric dry and wet deposition on plant growth is relatively simple for simulating atmospheric wet deposition (rainfall), but it is more difficult to simulate the process of atmospheric dry deposition. Under actual conditions, atmospheric dry deposition lasts for a long time and decreases slowly, which is difficult to simulate indoors.

[0003] The Chinese invention patent "Micro-area closed device for simulating dry deposition of atmospheric dust" with authorization announcement number CN 104849184B divides the disturbance layer into upper and lower spaces by providing a movable partition, disturbs the dust particles in the upper space, and then allows the dust to evenly fall to the lower layer through gravity, thereby simulating dry deposition.

[0004] Although the micro-area enclosed device for simulating dry deposition of atmospheric dust can solve the problem of dry deposition, it cannot guarantee the slow landing of dry deposition, and cannot achieve slow, uniform and persistent dry deposition. In addition, in the actual plant growth process, many plants need the action of wind to achieve pollination, and in the hot summer, there will be a serious greenhouse effect in the enclosed space, and the high temperature will cause the plants to fail to grow normally.

[0005] Therefore, in view of the above-mentioned defects of the prior art, it is necessary to design a new device for simulating atmospheric dry and wet deposition. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a plant cultivation device for simulating atmospheric dry and wet deposition, which can not only better achieve the long-term, slow and uniform falling process of simulated dry deposition particles, but also ensure the self-pollination of plants and reduce the influence of the greenhouse effect on the simulation experiment.

[0007] In order to solve the above technical problems, the present invention provides a plant cultivation device for simulating atmospheric dry and wet deposition, comprising a device shell, wherein the space inside the device shell is divided into a first partition layer, a second partition layer and a third partition layer by partitions and suspended fine-pore screens arranged in sequence along the vertical direction therein; a water pipe connected to a plurality of nozzles is installed on the partition, and a plurality of fine holes are opened on the partition, and the circular fine-pore screen is connected to a gear speed-regulating motor so as to drive the fine-pore screen to shake continuously; a first fan is provided on the side wall of the first partition layer, and a second fan is provided on the side wall of the third partition layer.

[0008] Preferably, the gear speed regulating motor is placed on the top of the device housing, and the fine-pore screen is a circular fine-pore screen.

[0009] Furthermore, the pore size of the fine-pore sieve is not less than 1 μm and not more than 50 μm.

[0010] Preferably, the diameter of the pores on the separator is greater than 0 cm and not greater than 0.5 cm.

[0011] Furthermore, the diameter of the pores on the separator is 0.5 cm.

[0012] Specifically, the number of the first fans is four, and they are respectively located on four side walls of the first partition.

[0013] Specifically, the number of the second fans is two, and they are respectively located on two opposite side walls of the third partition, and a movable door is provided on one side wall of the third partition where the second fan is not provided.

[0014] Typically, the water pipe is connected to a water pump via a flow valve.

[0015] Typically, a movable shift plate is provided on the top of the device housing.

[0016] Specifically, the movable shift plate is of a pull-out type.

[0017] Through the above technical scheme, the present invention provides an integrated dry and wet deposition simulation device that is more in line with actual conditions. By setting a second fan, ventilation is ensured, self-pollination of plants is ensured, and the high temperature caused by the greenhouse effect is reduced to ensure normal growth of plants. In order to simulate the slow and uniform falling process of dry deposition particles, the first fan, the fine holes on the partition and the circular fine hole sieve are set, so that the dry deposition particles can move in the device for a long time under the action of wind, gravity and the shaking of the circular fine hole sieve. Effective technical support is provided for exploring the influence of atmospheric dry and wet deposition on plant growth.

[0018] Other advantages of the present invention and the technical effects of the preferred embodiments will be further described in the following specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of a plant cultivation device for simulating atmospheric dry and wet deposition according to a specific embodiment of the present invention;

[0020] Figure 2 is a schematic structural diagram of a partition according to a specific embodiment of the present invention;

[0021] Figure 3 Schematic diagram of the structure of a fine-pore screen according to a specific embodiment of the present invention;

[0022] Figure 4 is a front view of a plant cultivation device for simulating atmospheric dry and wet deposition according to a specific embodiment of the present invention;

[0023] Figure 5 It is a left view of a plant cultivation device for simulating atmospheric dry and wet deposition according to a specific embodiment of the present invention;

[0024] Figure 6 is a top view of a plant cultivation device for simulating atmospheric dry and wet deposition according to a specific embodiment of the present invention;

[0025] Figure 7 It is a structural schematic diagram of the connection mode between the fine-pore screen and the gear speed regulating motor in a specific embodiment of the present invention.

[0026] Description of Reference Numerals

[0027] 1 partition 11 pores

[0028] 2 fine mesh screen 31 first barrier

[0029] 32 second compartment 33 third compartment

[0030] 34 movable doors 4 nozzles

[0031] 5 water pipe 6 first fan

[0032] 7 Second fan 8 Gear speed regulating motor

[0033] 91 coupling 92 nylon rod

[0034] 93 Connectors DETAILED DESCRIPTION

[0035] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0036] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", and "third" may explicitly or implicitly include one or more of the said features.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "setting", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] First of all, it should be noted that in the description of the following technical solution of the present invention, the directional terms such as "top" are technically defined based on the orientation reference of the plant cultivation device for simulating atmospheric dry and wet deposition. The terms are based on the orientation or positional relationship shown in the accompanying drawings, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention; the orientation terms for the plant cultivation device for simulating atmospheric dry and wet deposition of the present invention should be understood in combination with the actual installation state.

[0039] like Figures 1 to 6 As shown, the plant cultivation device for simulating atmospheric dry and wet deposition according to the basic embodiment of the present invention comprises a device housing, wherein the space inside the device housing is divided into a first partition 31, a second partition 32 and a third partition 33 by partitions 1 and suspended fine-mesh screens 2 arranged in sequence along the vertical direction therein; a water pipe 5 connected to a plurality of nozzles 4 is installed on the partition 1, and a plurality of fine holes 11 are opened on the partition 1, and the fine-mesh screen 2 is connected to a gear speed regulating motor 8 so as to be able to drive the fine-mesh screen 2 to continuously shake; a first fan 6 is arranged on the side wall of the first partition 31, and a second fan 7 is arranged on the side wall of the third partition 33. Among them, the gear speed regulating motor 8 can adopt an existing reduction motor, such as a small gear speed regulating motor.

[0040] In the above basic technical scheme, when conducting a simulation test of wet deposition rainfall, the fine-pore screen 2 is removed, the configured simulation solution is placed in a container, and then the simulation solution is introduced into the connected water pipe 5 through a water pump, the flow rate of the liquid flowing through each nozzle 4 is adjusted, and then spraying is performed directly to allow the simulation solution to freely fall onto the surface of the plants placed in the third compartment 33, thereby achieving the purpose of simulating wet deposition rainfall. When simulating dry dust deposition, the fine-mesh screen 2 is connected to the gear speed regulating motor 8, and is suspended inside the device housing. The motor gear is turned on, and the configured simulated dry deposition sample is placed in a corner of the partition 1 in the first partition 31. The first fan 6 located in the first partition 31 is turned on, so that the dry deposition sample is fully mixed under the action of the first fan 6, and slowly falls to the fine-mesh screen 2 through the fine holes 11 on the partition 1 under the action of gravity, and then slowly falls to the surface of the plant placed in the third partition 33 under the action of the fine-mesh screen 2; moreover, the second fan 7 in the third partition 33 can also be kept running, which, on the one hand, keeps the device ventilated, and on the other hand, ensures that the dry deposition is dispersed to every corner of the device, ensuring that the plants are permanently exposed to the dry deposition particles. In this way, by providing multiple fine holes 11 on the partition 1, a detachable fine-pore screen 2, a first fan 6 provided on the side wall of the first partition 31, and a second fan 7 provided on the side wall of the second partition 32, the dry sedimentation particles are allowed to move permanently in the device under the action of wind, gravity and the shaking of the circular fine-pore screen 2, thereby better achieving the effect of long duration and slow descent of atmospheric dry deposition, providing technical support for studying the impact of atmospheric dry and wet deposition on plant growth.

[0041] When conducting a simulation test of wet precipitation rainfall, the water pipe 5 can be connected to the water pump through a flow valve, and the flow valve can be adjusted to control the flow of liquid delivered to the water pipe 5 by the water pump, thereby controlling the speed of spraying the simulated solution by the nozzle 4. The flow pump uses an existing flow control valve, preferably a throttle valve; the water pump uses an existing pumping device for conveying liquid, such as a centrifugal pump, an axial flow pump, and a mixed flow pump.

[0042] In addition, when simulating dry deposition dust, the space inside the device shell can be opened by providing a movable shift plate on the top of the device shell to place the dry deposition sample for simulation; the movable shift plate can be a pull-out type, such as providing corresponding slide grooves on the two opposite side walls of the first partition 31 on the top of the device shell, so that the movable shift plate can be pulled and slid along the slide groove; or, the movable shift plate can be buckled on the top of the device shell by an existing snap-fit ​​structure; or, other equivalent means that can achieve opening and closing the top of the device shell.

[0043] In a specific embodiment, Figure 7As shown, the fine-pore screen 2 adopts a circular fine-pore screen, the gear speed regulating motor 8 is connected to the nylon rod 92 through a coupling 91, and the nylon rod 92 is connected to the fine-pore screen 2 through a connecting piece 93. The gear speed regulating motor 8 can drive the fine-pore screen 2 to shake slightly to ensure that the dust slowly falls into the third compartment 33, wherein the connecting piece can be a connecting part such as a wire, a rope or a rod, such as a metal wire such as an iron wire, or a plastic rope, a plastic wire, a plastic rod, etc.; the fine-pore screen 2 is not limited to a circle, and can also be other shapes, such as a rectangle, a hexagon or other polygons, as long as it can be connected to the nylon rod 92 through the connecting piece 93 and continuously shaken under the action of the gear speed regulating motor 8;

[0044] The pore size of the fine-pore screen 2 is in the range of 1 μm to 50 μm; in the specific experiment, three pore screens with pore sizes of 50 μm, 10 μm, 2.5 μm and 1 μm are mainly selected to explore the effects of dry sediment particles with different pore sizes on plant growth. The diameter of the fine pores 11 on the partition 1 is not greater than 0.5 cm, preferably 0.5 cm.

[0045] Specifically, four first fans 6 may be provided, and are located on four side walls of the first partition layer 31 , respectively, so that the dry sedimentation sample can be fully mixed in the first partition layer 31 .

[0046] In addition, two second fans 7 can be provided, and they are respectively located on two opposite side walls of the third partition 33; the ventilation state is maintained to ensure that the dry precipitation particles are dispersed to every corner of the device, so that the plants are permanently exposed to the dry precipitation particles; a movable door 34 can be provided on a side wall of the third partition 33 where the second fan 7 is not provided, so as to facilitate the planting and management of plants.

[0047] Reference Figures 1 to 6As shown, a plant cultivation device for simulating atmospheric dry and wet deposition according to a preferred embodiment of the present invention comprises a device shell, wherein a partition 1 and a fine-pore screen 2 are arranged in sequence in a vertical direction in the device shell, and the partition 1 and the circular fine-pore screen 2 divide the space in the device shell into three layers, namely, a first partition 31, a second partition 32 and a third partition 33; a first fan 6 is respectively arranged on the four side walls of the first partition 31, a second fan 7 is respectively arranged on the two opposite side walls of the second partition 32, and a movable door 34 can be arranged on one side wall of the third partition 33 where the second fan 7 is not arranged, so as to facilitate the planting and management of plants; the partition 1 is a fine-pore partition, and a plurality of fans are arranged on it. A fine hole 11 with a diameter of 0.5 cm is provided on the partition 1. A water pipe 5 is connected to the water pipe 5, and a plurality of nozzles 4 are connected to the water pump. The water pump is connected to the water pipe 5 through a flow valve to provide a simulated solution for a simulation test of wet precipitation rainfall, and the flow rate of the liquid flowing out of the nozzle 4 can be controlled by the flow valve. The fine-pore screen 2 is detachably connected to the nylon rod 92 through a connector 93, and the nylon rod 92 is connected to the gear speed regulating motor 8 placed on the top of the device housing through a coupling 91. In the simulation test of dry precipitation, the fine-pore screen 2 is continuously shaken under the drive of the gear speed regulating motor 8, so as to achieve a slow, uniform and persistent falling process of the simulated dry precipitation particles.

[0048] For better understanding, the working process of the plant cultivation device for simulating atmospheric dry and wet deposition of the present invention is described below.

[0049] When simulating wet precipitation rainfall, the movable door 34 is opened, the fine-pore sieve 2 is removed, and the prepared simulation solution is placed in the container. The container is connected to the water pump, and the power is turned on to make the water pump pump the simulation solution into the water pipe 5. The nozzle 4 is opened, and the flow valve can be adjusted to adjust the flow rate to spray, so that the simulation solution can freely fall onto the surface of the plant placed in the third compartment 33, thereby achieving the purpose of simulating wet precipitation rainfall;

[0050] When simulating dry dust deposition, the fine-mesh screen 2 is connected to the gear speed regulating motor 8 on the top, and is suspended inside the device. The gear speed regulating motor 8 is turned on, and then the configured simulated dry deposition sample is placed in a corner of the partition 1 in the first compartment 31, and the four first fans 6 located in the first compartment 31 are turned on, so that the dry deposition sample is fully mixed under the action of the first fans 6, and slowly falls onto the fine-mesh screen 2 in the second compartment 32 through the fine holes 11 on the partition 1 under the action of gravity, and the gear speed regulating motor 8 is started to drive the fine-mesh screen 2 to shake, so that the dry deposition sample particles passing through the fine-mesh screen 2 slowly fall to the surface of the plant placed in the third compartment 33; moreover, the two second fans 7 in the third compartment 33 also remain in operation, which, on the one hand, keeps the device in a ventilated state, and on the other hand, ensures that the dry deposition is dispersed to every corner of the device, and ensures that the plants are permanently exposed to the dry deposition particles.

[0051] In the above working process, by setting three partitions, namely the first partition 31, the second partition 32 and the third partition 33, the dry sedimentation is mixed by the first fan 6 in the first partition 31, and then under the dual action of the partition provided with fine holes 11 and the circular fine hole screen 2, it can be better ensured that the dry sedimentation particles fall onto the plant surface evenly, slowly and persistently; the second fan 7 is set in the third partition 33 to ensure the ventilation state, ensure the self-pollination of the plant, and at the same time reduce the high temperature caused by the greenhouse effect to ensure the normal growth of the plant; the present invention provides an integrated dry and wet deposition simulation device that is more in line with the actual situation, and provides strong technical support for exploring the influence of atmospheric dry and wet deposition on plant growth.

[0052] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, including the combination of various specific technical features in any suitable manner. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope of the present invention.

Claims

1. A plant cultivation device for simulating atmospheric dry and wet deposition, characterized in that: The device comprises a housing, wherein the space inside the housing is divided into a first compartment (31), a second compartment (32) and a third compartment (33) by partitions (1) and suspended fine-pore partitions (2) arranged in sequence along the vertical direction therein; a water pipe (5) connected to a plurality of nozzles (4) is installed on the partition (1), and a plurality of fine holes (11) are provided on the partition (1); the fine-pore partition (2) is connected to a gear speed regulating motor (8) so as to be able to drive the fine-pore partition (2) to continuously vibrate; the gear speed regulating motor (8) is placed on the top of the housing; the fine-pore partition (2) is a circular fine-pore partition; the aperture of the fine-pore partition (2) is not less than 1 μm and not more than 50 μm; a first fan (6) is provided on the side wall of the first compartment (31), and a second fan (7) is provided on the side wall of the third compartment (33).

2. The plant cultivation device for simulating atmospheric dry and wet deposition according to claim 1, characterized in that: The diameter of the pores (11) on the partition (1) is greater than 0 cm and not greater than 0.5 cm.

3. The plant cultivation device for simulating atmospheric dry and wet deposition according to claim 1, characterized in that: The diameter of the pores (11) on the separator (1) is 0.5 cm.

4. The plant cultivation device for simulating atmospheric dry and wet deposition according to any one of claims 1 to 3, characterized in that: The number of the first fans (6) is four, and they are respectively located on the four side walls of the first partition (31).

5. The plant cultivation device for simulating atmospheric dry and wet deposition according to any one of claims 1 to 3, characterized in that: The number of the second fans (7) is two and they are respectively located on two opposite side walls of the third partition (33); a movable door (34) is provided on a side wall of the third partition (33) on which the second fan (7) is not provided.

6. The plant cultivation device for simulating atmospheric dry and wet deposition according to any one of claims 1 to 3, characterized in that: The water pipe (5) is connected to the water pump via a flow valve.

7. The plant cultivation device for simulating atmospheric dry and wet deposition according to any one of claims 1 to 3, characterized in that: A movable shifting plate is arranged on the top of the device housing.

8. The plant cultivation device for simulating atmospheric dry and wet deposition according to claim 7, characterized in that: The movable shift plate is of pull-out type.

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