CN113933491A - A step irrigation test device for irrigating in-process micro-plastic migration research - Google Patents
A step irrigation test device for irrigating in-process micro-plastic migration research Download PDFInfo
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- CN113933491A CN113933491A CN202111234751.6A CN202111234751A CN113933491A CN 113933491 A CN113933491 A CN 113933491A CN 202111234751 A CN202111234751 A CN 202111234751A CN 113933491 A CN113933491 A CN 113933491A
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- 230000002262 irrigation Effects 0.000 title claims abstract description 93
- 238000003973 irrigation Methods 0.000 title claims abstract description 93
- 238000012360 testing method Methods 0.000 title claims abstract description 75
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- 239000004033 plastic Substances 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 35
- 230000005012 migration Effects 0.000 title claims abstract description 28
- 238000013508 migration Methods 0.000 title claims abstract description 28
- 238000011160 research Methods 0.000 title claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 161
- 230000008569 process Effects 0.000 claims abstract description 32
- 239000002689 soil Substances 0.000 claims abstract description 32
- 239000007788 liquid Substances 0.000 claims abstract description 28
- 238000003756 stirring Methods 0.000 claims abstract description 24
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 11
- 238000005192 partition Methods 0.000 claims abstract description 9
- 238000007599 discharging Methods 0.000 claims abstract description 8
- 238000005086 pumping Methods 0.000 claims description 17
- 229920000426 Microplastic Polymers 0.000 claims description 15
- 230000000903 blocking effect Effects 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 239000003621 irrigation water Substances 0.000 abstract description 7
- 239000002245 particle Substances 0.000 description 8
- 230000007613 environmental effect Effects 0.000 description 4
- 239000003651 drinking water Substances 0.000 description 3
- 235000020188 drinking water Nutrition 0.000 description 3
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- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
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- 229910001385 heavy metal Inorganic materials 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/44—Resins; Plastics; Rubber; Leather
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Abstract
The invention discloses a step irrigation test device for researching micro-plastic migration in an irrigation process, which relates to the technical field of test devices and comprises a liquid storage box, wherein a plurality of test boxes are arranged on one side of the liquid storage box; 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 invention can quickly collect irrigation water samples containing micro-plastics of different water outlet sections; in addition, the testing device can be repeatedly used, and the testing cost is saved.
Description
Technical Field
The invention relates to the technical field of test devices, in particular to a step irrigation test device for micro-plastic migration research in an irrigation process.
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 the device, the invention provides the step irrigation test device for the migration research of the micro-plastics in the irrigation process, which can research the migration rules of the micro-plastics with different types, particle sizes and concentrations in the irrigation process and is easy to collect irrigation water samples containing the micro-plastics in different water outlet sections.
Disclosure of Invention
Aiming at the problems, the invention provides a step irrigation test device for researching the migration of micro-plastics in the irrigation process, and solves the problem that the conventional test device is inconvenient to research the migration rule of the micro-plastics in the irrigation process.
The technical scheme adopted by the invention is as follows: 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 invention has the advantages that: compared with the prior art, the invention provides the step irrigation test device for the research on the migration of the micro-plastics in the irrigation process, and the step irrigation test device 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 objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.
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 a free-flowing 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 apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention 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, are merely for convenience in describing the present invention and simplifying the 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 thus, 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 invention provides a cascade irrigation test device for researching micro-plastic migration in an irrigation process, wherein when the cascade irrigation test device is used, a stirring rod 3 and blades 2 are connected through a stirrer 4 and are arranged in a liquid storage tank 1, the blades 2 are fixed at the bottom of the stirring rod 3, water body solutions of micro-plastics with different types, particle sizes and concentrations need to be added into the liquid storage tank 1 before a test, and a specific configuration scheme of the micro-plastic water body solution is shown in 'Chari' for example; 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 one embodiment of the present invention, the supporting device comprises 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; in an embodiment of the present invention, the size of the supporting surface of the bracket 18 is slightly smaller than the size of the bottom plate of the open box 9, and the cross bars can be arranged between the supporting columns 19 for fixing according to different heights, and the size of the supporting surface of the bracket 18 is set according to the size of the open box 9, for example, the length × width =95 cm × 45 cm or the length × width =145 cm × 70 cm.
In one embodiment of the invention, the water taking groove 17 is a right-angle groove, so that an irrigation water sample with a water outlet section containing micro plastic is more convenient for the open box 9.
In an embodiment of the invention, a plurality of flow rate monitors 12 are uniformly distributed on the cross section width of the water outlet side of the opening box 9, the flow rate monitors 12 are fixed on the water outlet cross section of the opening box 9, the flow rate monitors 12 are automatically controlled, the installation number and the interval position of the flow rate monitors 12 can be set according to the water outlet cross section width of the opening box 9, if the water outlet cross section width of the opening box 9 is 50 cm, 1 flow rate monitor is installed at the middle position of the water outlet cross section, and if the water outlet cross section width of the opening box 9 is 75 cm, 1 flow rate monitor is respectively installed at the water outlet cross sections 1/3 and 2/3.
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 invention provides a step irrigation test device for micro-plastic migration research in an irrigation process, which has the advantages of simple and compact structure, easy realization, convenient use, high efficiency and convenient combination and installation and transportation, and can quickly collect irrigation water samples containing micro-plastic 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 purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
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).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111234751.6A CN113933491A (en) | 2021-10-22 | 2021-10-22 | A step irrigation test device for irrigating in-process micro-plastic migration research |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111234751.6A CN113933491A (en) | 2021-10-22 | 2021-10-22 | A step irrigation test device for irrigating in-process micro-plastic migration research |
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| CN113933491A true CN113933491A (en) | 2022-01-14 |
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| CN202111234751.6A Pending CN113933491A (en) | 2021-10-22 | 2021-10-22 | A step irrigation test device for irrigating in-process micro-plastic migration research |
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| CN (1) | CN113933491A (en) |
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