CN216013382U

CN216013382U - A step irrigation test device for irrigating in-process micro-plastic migration research

Info

Publication number: CN216013382U
Application number: CN202122553127.4U
Authority: CN
Inventors: 张彦; 窦明; 李平; 窦浩然; 梁志杰; 齐学斌
Original assignee: Zhengzhou University; Farmland Irrigation Research Institute of CAAS
Current assignee: Zhengzhou University; Farmland Irrigation Research Institute of CAAS
Priority date: 2021-10-22
Filing date: 2021-10-22
Publication date: 2022-03-11
Anticipated expiration: 2031-10-22

Abstract

The utility model discloses a step irrigation test device for the study of the migration of micro-plastics in the irrigation process, which relates to the technical field of test devices and comprises a plurality of test boxes arranged on one side of a liquid storage box, a T-shaped irrigation pipe matched with the test boxes is arranged above one end of the highest test box, and the T-shaped irrigation pipe is communicated with the liquid storage box through a water pumping device; the other side in the liquid storage tank is provided with a stirring device; a water storage tank, a supporting partition plate, a non-woven fabric layer and a soil layer are respectively arranged in the open box from bottom to top, crops are planted in the soil layer, and a water discharging device is arranged on the water outlet side of the water storage tank; a plurality of water seepage holes communicated with the water storage tank are uniformly distributed on the supporting clapboard; the T-shaped irrigation pipe is arranged above the water inlet side at one end of the opening box, and the water taking groove is arranged at the bottom of the water outlet side at the other end of the opening box. The utility model can quickly collect irrigation water samples containing micro plastics with different water outlet sections; in addition, the testing device can be repeatedly used, and the testing cost is saved.

Description

A step irrigation test device for irrigating in-process micro-plastic migration research

Technical Field

The utility model relates to a test device technical field, concretely relates to step irrigation test device that is used for irrigating in-process micro-plastic migration research.

Background

At present, as a new type of environmental pollutant, the pollution of micro plastic has become a globally recognized environmental problem. The micro plastic generally refers to different types of plastic fibers, particles, fragments, films and the like with the diameter of less than 5 mm, has the characteristics of relatively small volume, strong pollutant adsorption capacity, great durability, environmental hazard and the like, is widely existed in marine ecosystems, land aquatic environmental systems and soil environments, and brings great challenges to global ecosystems.

The micro plastic can migrate among land environment, fresh water environment and marine environment, and the transportation process of the micro plastic in the environment is very complicated due to the common influence of the physical properties and environmental factors of the micro plastic, so that the research mainly focuses on oceans and rivers aiming at the migration process of the micro plastic in the water body, and the research is fresh for the migration and accumulation process of the micro plastic in the farmland in the irrigation process. The micro-plastic in the farmland soil mainly enters the soil environment from the outside through the processes of atmospheric sedimentation, surface runoff, irrigation, fertilizer application and the like, and the micro-plastic entering the farmland soil under the action of the irrigation influence is a main component part for accumulating the micro-plastic in the farmland soil.

Farmland soil ecological environment provides the guarantee for agricultural product quality safety, and the micro plastic that gets into in the farmland soil not only can adsorb organic pollutant, also can regard as the heavy metal carrier, and ingestion through farmland soil animal accumulates in soil food chain simultaneously, and micro plastic can change soil physical properties, accumulates certain concentration in soil, will exert an influence to farmland soil function and biological diversity.

In the prior art, the collection and separation extraction device mainly relates to micro-plastic in water or soil, and a test device for micro-plastic migration research in the irrigation process is less. By developing a field irrigation test, the migration rules of different types, particle sizes and concentrations of the micro-plastics in the irrigation process are researched, a large amount of manpower, material resources and time are consumed, and the test difficulty is increased due to the fact that the micro-plastics are easily limited by the external environment; meanwhile, the water body with different concentrations of the micro-plastic is not easy to realize in the field irrigation test, and the collection of water samples containing the micro-plastic in different sections is not facilitated. Based on this, the utility model provides a step irrigation test device for irrigating in-process micro-plastic migration research can study the migration law of different grade type, particle diameter and concentration micro-plastic in the irrigation process, and easily collect the irrigation water sample that different play water sections contain micro-plastic.

Disclosure of Invention

The utility model aims at the above problem, a step irrigation test device for irrigating research of in-process plastic migration is provided, the problem that current test device is inconvenient to carry out the research to the migration law of plastic a little in the irrigation process has been solved.

The utility model adopts the technical proposal that: a cascade irrigation test device for micro plastic migration research in the irrigation process comprises a water pumping device, a stirring device, a liquid storage tank, a T-shaped irrigation pipe and a test box; a plurality of test boxes are arranged on one side of the liquid storage box, and the heights of the test boxes are gradually decreased; a T-shaped irrigation pipe matched with the test box is arranged above one end of the test box at the highest position, and the T-shaped irrigation pipe is communicated with the liquid storage box through a water pumping device; a stirring device is arranged on the other side in the liquid storage tank; the test box comprises a supporting device, an opening box, a supporting clapboard, a non-woven fabric layer and a soil layer; the opening box is arranged on a working surface to be used through a supporting device, a water storage tank, a supporting partition plate, a non-woven fabric layer and a soil layer are arranged in the opening box from bottom to top respectively, crops are planted in the soil layer, and a water discharging device is arranged on the water outlet side of the water storage tank; a plurality of water seepage holes communicated with the water storage tank are uniformly distributed on the supporting clapboard; the T-shaped irrigation pipe is arranged above the water inlet side at one end of the open box, and the bottom of the water outlet side at the other end of the open box is provided with a water taking groove; and the water taking grooves are respectively connected with the tops of the water inlet sides of the adjacent opening boxes.

Further, the stirring device comprises a stirrer, a stirring rod and a blade; the output end of the stirrer is provided with a stirring rod, the bottom of the stirring rod is provided with a blade, and the blade is arranged in the liquid storage tank.

Furthermore, pumping device includes pressure boost suction pump and drinking-water pipe, be equipped with the drinking-water pipe in the liquid reserve tank, the drinking-water pipe other end is connected with the pressure boost suction pump and intakes the end, the pressure boost suction pump is connected with the perpendicular wall of T type irrigation pipe, be equipped with a plurality of evenly distributed's from the discharge orifice on the lateral wall of T type irrigation pipe.

Furthermore, a control valve is arranged on the vertical wall of the T-shaped irrigation pipe.

Further, the control valve is an electromagnetic valve.

Furthermore, the water discharging device comprises a baffle and a blocking plug, and the water outlet side of the water storage tank is provided with the baffle; the baffle is provided with a plurality of water discharge holes which are uniformly distributed, and detachable plug plugs are installed in the water discharge holes in a matched mode.

Still further, the supporting device comprises a bracket, a supporting column and a bottom wheel; the opening bottom of the case portion is equipped with the support, support bottom four corners is equipped with the support column respectively, the return pulley is installed to the support column bottom, and is a plurality of the support column height is degressive the setting in proper order.

Furthermore, the bottom wheel is a rubber tire and is provided with anti-skid lines.

Furthermore, the water taking groove is a right-angle groove.

Furthermore, a plurality of flow rate monitors are uniformly distributed on the cross section width of the water outlet side of the opening box.

The utility model has the advantages that: compared with the prior art, the utility model provides a step irrigation test device for the research of the migration of the micro-plastics in the irrigation process, which is not limited to the collection function of the micro-plastics in the water body; the liquid storage tank in the device can be configured with water body schemes of different types, particle sizes and concentrations of micro-plastics so as to research the migration rule of the micro-plastics in the irrigation test process; the stirrer is provided with a stirring rod and blades, when the water pump pumps water, the stirrer starts to stir the water body to ensure that the micro-plastics in the water body are uniformly distributed as much as possible, and the bottom of the T-shaped irrigation pipe is provided with a self-flow hole to ensure that water flow can uniformly enter the open box, so that the stirrer is simple in structure, convenient and effective; a water storage tank and a support partition plate are arranged in the opening box, water seepage holes are formed in the support partition plate, a part of water body can enter the water storage tank through the water seepage holes in the lower support partition plate after penetrating through the soil layer and the non-woven fabric layer in the irrigation process, and the water body in the water storage tank is discharged through the water discharge holes in the bottom of the baffle plate when the test is finished so as to prepare for a subsequent test, so that the test is convenient and rapid; the flow velocity monitor is arranged on the water outlet section of the opening box, so that the flow velocity of the water body on the water outlet section of each step opening box can be recorded, and the method is simple and effective; the soil layer in the open box can be set to have different thicknesses according to different crops planted, the support can be adjusted in height according to needs to be set to have different gradients, and the bottom of the support column is provided with a support bottom wheel which is convenient and fast to move; the water taking groove is arranged below the water outlet section of the open box, so that a micro-plastic water sample can be collected conveniently, and the water taking groove is convenient, practical, simple and effective.

In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the present invention illustrating the opening of the self-tapping hole;

FIG. 3 is a front view of the open box of the present invention;

FIG. 4 is a side view of the open box of the present invention;

fig. 5 is a schematic view of the water seepage hole of the present invention.

Reference numerals:

1-liquid storage tank, 2-blade, 3-stirring rod, 4-stirrer, 5-booster water pump, 6-water pumping pipe, 7-control valve, 8-T type irrigation pipe, 9-open tank, 10-crop, 11-soil layer, 12-flow rate monitor, 13-non-woven fabric layer, 14-water discharging hole, 15-supporting partition plate, 16-baffle plate, 17-water taking tank, 18-bracket, 19-supporting column, 20-bottom wheel, 21-self-flowing hole, 22-water seepage hole and 23-water storage tank.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1 to 5, a cascade irrigation test device for the study of micro-plastic migration in the irrigation process comprises a water pumping device, a stirring device, a liquid storage tank 1, a T-shaped irrigation pipe 8 and a test box; a plurality of test boxes are arranged on one side of the liquid storage box 1, the heights of the test boxes are sequentially and progressively reduced, and the heights can be adjusted as required to set different gradients; a T-shaped irrigation pipe 8 matched with the test box is arranged above one end of the test box at the highest position, and the T-shaped irrigation pipe 8 is communicated with the liquid storage box 1 through a water pumping device; the test box comprises a supporting device, an open box 9, a supporting clapboard 15, a non-woven fabric layer 13 and a soil layer 11; the opening box 9 is arranged on a working surface to be used through a supporting device, a water storage tank 23, a supporting partition plate 15, a non-woven fabric layer 13 and a soil layer 11 are respectively arranged in the opening box 9 from bottom to top, the layers are not interchangeable up and down, the structure, the shape and the size of each step opening box 9 are consistent, crops 10 are planted in the soil layer 11, and a water discharging device is arranged on the water outlet side of the water storage tank 23; the water discharging device comprises a baffle 16 and a blocking plug, and the baffle 16 is arranged at the water outlet side of the water storage tank 23; a plurality of uniformly distributed water discharge holes 14 are formed in the baffle 16, detachable plug plugs are arranged in the water discharge holes 14 in a matched mode, preferably, the plug plugs are rubber plugs, and the water discharge holes 14 are sealed by the rubber plugs in the irrigation test process; the thickness of the soil layer 10 can be set according to the type of crops to be planted, for example, the thickness of the soil layer is set to 10 cm in the case of wheat planting and 15 cm in the case of corn planting; the material and the size of each stage of opening box 9 can be set according to the test requirements, and the material of the opening box 9 is made of a polyvinyl chloride PVC plate or an organic glass PMMA plate with the thickness of 5 mm or 10 mm; the size of the open box 9 can be generally set to be length × width × height of the left baffle =100 cm × 50 cm × 25 cm or length × width × height of the left baffle =150 cm × 75 cm × 35 cm, and the water outlet baffle 16 on the right side of the open box 9 needs to be set according to the height of the water storage tank 23 and the thickness of the soil layer 10; the length and width of the supporting clapboard 15 and the non-woven fabric layer 13 are kept consistent with the length and width of the open box 9; a plurality of water seepage holes 22 communicated with the water storage tank 23 are uniformly distributed on the supporting clapboard 15, and the water seepage holes 22 are beneficial to the water body to seep into the water storage tank 23 in the irrigation process; the T-shaped irrigation pipe 8 is arranged above the water inlet side of one end of the opening box 9, the bottom of the water outlet side of the other end of the opening box 9 is provided with a water taking groove 17, and the water taking grooves 17 are respectively connected with the tops of the water inlet sides of the adjacent opening boxes 9; the irrigation water sampling device is used for collecting an irrigation water sample with a micro-plastic contained in the water outlet section of an open box 9, one side of a water taking groove 17 is vertically connected with the upper open box 9, the other side of the water taking groove is horizontally connected with the lower open box 9, the width of the water taking groove 17 is consistent with that of the open box 9, and the length of two sides of the water taking groove 17 is easily set to be 5 cm or 10 cm; the water taking tank 17 and the opening box 9 are fixed by screws; the other side in the liquid storage tank 1 is provided with a stirring device; the stirring device comprises a stirrer 4, a stirring rod 3 and blades 2; the output end of the stirrer 4 is provided with a stirring rod 3, the bottom of the stirring rod 3 is provided with a blade 2, and the blade 2 is arranged in the liquid storage tank 1; the water pumping device comprises a booster water pump 5 and a water pumping pipe 6, the water pumping pipe 6 is arranged in the liquid storage tank 1, the other end of the water pumping pipe 6 is connected with the water inlet end of the booster water pump 5, the booster water pump 5 is connected with the vertical wall of the T-shaped irrigation pipe 8, and a plurality of uniformly distributed self-flowing holes 21 are formed in the transverse wall of the T-shaped irrigation pipe 8; the vertical wall of the T-shaped irrigation pipe 8 is provided with a control valve 7, and the control valve 7 is an electromagnetic valve.

The utility model provides a step irrigation test device for the research of the migration of micro-plastics in the irrigation process, when in use, the stirring rod 3 and the blade 2 are connected through the stirrer 4 and are arranged in the liquid storage tank 1, and the blade 2 is fixed at the bottom of the stirring rod 3, and before the test, water body solutions of micro-plastics with different types, particle sizes and concentrations are required to be added into the liquid storage tank 1, and if the specific configuration scheme of the water body solutions of the micro-plastics is shown in 'Tao Yi'; the pressurizing water pump 5 is connected with the water pumping pipe 6 and is arranged in the water body of the liquid storage tank 1, and the T-shaped irrigation pipe 8 is connected with the pressurizing water pump 5 and is fixed above the left side of the opening tank 9; an electromagnetic valve 7 is arranged at a water inlet of the T-shaped irrigation pipe 8 to realize automatic control of an irrigation process, uniform automatic flow holes 21 are formed in the bottom of the upper part of the T-shaped irrigation pipe 8, which is positioned on the left side of the opening box 9, to ensure that irrigation water flows uniformly enter the opening box 9, the width of the T-shaped irrigation pipe 8 needs to be set according to the size of the opening box 9, and the diameter of the automatic flow holes 21 is set according to test requirements; setting the number of the steps according to the test requirements to determine the number of the manufactured test boxes, and planting crops after a certain amount of soil is filled in the open box 9; secondly, assembling all parts according to the figure 1 to form a cascade irrigation test device system, and adding the configured water body solution of different types, particle sizes and concentration of micro-plastics into the liquid storage tank 1 during each test; thirdly, after crops grow to a certain degree, opening an electromagnetic valve on the T-shaped irrigation pipe 8, starting the stirrer 4 and the booster water pump 5 to start an irrigation test, enabling a part of water solution containing different micro-plastics to enter the opening box 9 through irrigation, enabling the part of water solution to penetrate through the soil layer 11 and the non-woven fabric layer 13 and then enter the water storage tank 23 through the water seepage holes 22 in the lower supporting partition plate 15, enabling the other part of water solution to flow out of the opening box 9 to enter the water taking tank 17 and continuously flow to the next-stage opening box 9, and collecting water samples containing the micro-plastics from the water taking tank 17 for storage in the irrigation test process so as to detect the micro-plastics content of the water of each water outlet section; finally, when the irrigation test is finished, the rubber plug of the water discharge hole 14 at the bottom of the baffle 16 is opened, and the water solution in the water storage tank 23 is discharged to prepare for the next irrigation test.

In an embodiment of the present invention, the supporting device includes a bracket 18, a supporting column 19 and a bottom wheel 20; the bottom of the opening box 9 is provided with a support 18, the opening box 9 of each stage is integrally arranged above the support 18, four corners of the bottom of the support 18 are respectively provided with support columns 19, the bottom of each support column 19 is provided with a bottom wheel 20, each bottom wheel 20 is provided with a brake block, the bottom wheels 20 are rubber tires and are provided with anti-skid lines, the heights of the support columns 19 are sequentially arranged in a descending manner, and different gradients can be set by adjusting the heights according to needs; the number of the open boxes 9 and the number of the brackets 18 can be set to be different according to the requirements of the irrigation test, but the number of the open boxes 9 and the number of the brackets 18 are kept consistent in a step irrigation test device, and the step setting of the open boxes 9 and the brackets 18 and the height matching of the support columns 19 are shown in the table II; the utility model discloses an in the embodiment, support 18's holding surface size slightly is less than opening case 9 bottom plate size, can set up the horizontal pole simultaneously according to the difference in height between support column 19 fixedly, and support 18 holding surface size is according to opening case 9 size settlement, if support 18 holding surface length x width =95 cm x 45 cm or length x width =145 cm x 70 cm.

The utility model discloses an in the embodiment, water intaking groove 17 is right angle type recess, and more convenient opening case 9 goes out the irrigation water sample that the water section contains little plastics.

The utility model discloses an in the embodiment, the section width department evenly distributed of opening case 9 play water side has a plurality of velocity of flow monitor 12, velocity of flow monitor 12 is fixed in the play water section of opening case 9, velocity of flow monitor 12 is the automatic control velocity of flow monitor, can set up velocity of flow monitor 12 installation number and interval position according to opening case 9 play water section width, 1 velocity of flow monitor is installed at play water section intermediate position when opening case 9 goes out water section width for 50 cm, 1 velocity of flow monitor is respectively installed in play water section 1/3 and 2/3 department when opening case 9 goes out water section width for 75 cm.

The first table is a specific configuration scheme of a micro-plastic water body solution. The configuration scheme is provided with three different micro-plastics, three different particle sizes and three micro-plastic concentrations, and the total is twenty-seven configuration schemes.

Specific preparation scheme of micro-plastic water solution

The table is a configuration scheme of the micro-plastic water body solution in the liquid storage tank, but is not limited to the type, the particle size and the concentration of the micro-plastic in the table, and can be adjusted according to test requirements to meet the requirements of different test designs.

Step setting of open box and support and height matching of support column

The meter is used for setting the steps of the opening box and the support frame to be matched with the height of the support column, but is not limited to the number of the steps and the supporting height in the meter, and can be adjusted according to test requirements to meet the requirements of different test designs.

The utility model provides a step irrigation test device for the research of the migration of micro-plastics in the irrigation process, which has simple and compact structure, easy realization, convenient use, high efficiency and convenient combination, installation and transportation, and can quickly collect irrigation water samples containing micro-plastics in different water outlet sections; in addition, the testing device can be repeatedly used, and the testing cost is saved.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A step irrigation test device for micro plastic migration research in the irrigation process is characterized by comprising a water pumping device, a stirring device, a liquid storage tank (1), a T-shaped irrigation pipe (8) and a test box; a plurality of test boxes are arranged on one side of the liquid storage box (1), and the heights of the test boxes are gradually decreased; a T-shaped irrigation pipe (8) matched with the test box is arranged above one end of the test box at the highest position, and the T-shaped irrigation pipe (8) is communicated with the liquid storage box (1) through a water pumping device; a stirring device is arranged on the other side in the liquid storage tank (1); the test box comprises a supporting device, an open box (9), a supporting clapboard (15), a non-woven fabric layer (13) and a soil layer (11); the opening box (9) is arranged on a working surface to be used through a supporting device, a water storage tank (23), a supporting partition plate (15), a non-woven fabric layer (13) and a soil layer (11) are arranged in the opening box (9) from bottom to top respectively, crops (10) are planted in the soil layer (11), and a water discharging device is arranged on the water outlet side of the water storage tank (23); a plurality of water seepage holes (22) communicated with the water storage tank (23) are uniformly distributed on the supporting clapboard (15); the T-shaped irrigation pipe (8) is arranged above the water inlet side at one end of the opening box (9), and the water taking tank (17) is arranged at the bottom of the water outlet side at the other end of the opening box (9); the water taking grooves (17) are respectively connected with the tops of the water inlet sides of the adjacent opening boxes (9).

2. The cascade irrigation test device for the study of the migration of micro-plastics in the irrigation process as claimed in claim 1, wherein the stirring device comprises a stirrer (4), a stirring rod (3) and a blade (2); the output end of the stirrer (4) is provided with a stirring rod (3), the bottom of the stirring rod (3) is provided with a blade (2), and the blade (2) is arranged in the liquid storage tank (1).

3. The cascade irrigation test device for the micro plastic migration research in the irrigation process as claimed in claim 1, wherein the pumping device comprises a booster water pump (5) and a pumping pipe (6), the pumping pipe (6) is arranged in the liquid storage tank (1), the other end of the pumping pipe (6) is connected with a water inlet end of the booster water pump (5), the booster water pump (5) is connected with a vertical wall of the T-shaped irrigation pipe (8), and a plurality of uniformly distributed flowing holes (21) are formed in a transverse wall of the T-shaped irrigation pipe (8).

4. The cascade irrigation testing device for the study of the migration of micro plastics in the irrigation process as claimed in claim 3, wherein the vertical wall of the T-shaped irrigation pipe (8) is provided with a control valve (7).

5. The cascade irrigation test device for the study of the migration of micro-plastics in the irrigation process according to claim 4, characterized in that the control valve (7) is an electromagnetic valve.

6. The cascade irrigation test device for the research on the migration of the micro-plastics in the irrigation process as claimed in claim 1, wherein the water discharging device comprises a baffle plate (16) and a blocking plug, and the water outlet side of the water storage tank (23) is provided with the baffle plate (16); the baffle (16) is provided with a plurality of water discharge holes (14) which are uniformly distributed, and detachable plug plugs are arranged in the water discharge holes (14) in a matched manner.

7. The cascade irrigation test device for the study of the migration of micro-plastics during irrigation according to claim 1, characterized in that the support means comprise a bracket (18), support columns (19) and bottom wheels (20); opening case (9) bottom is equipped with support (18), support (18) bottom four corners is equipped with support column (19) respectively, return pulley (20) are installed to support column (19) bottom, and is a plurality of support column (19) highly descend progressively in proper order and set up.

8. The cascade irrigation test device for the study of the migration of micro-plastics in the irrigation process as claimed in claim 7, wherein the bottom wheel (20) is a rubber tire and is provided with anti-skid lines.

9. The cascade irrigation testing device for the micro-plastic migration research in the irrigation process as claimed in claim 1, wherein the water taking tank (17) is a right-angle groove.

10. The cascade irrigation test device for the micro plastic migration research in the irrigation process as claimed in claim 1, wherein a plurality of flow rate monitors (12) are uniformly distributed at the cross-sectional width of the water outlet side of the open box (9).