CN111445773A

CN111445773A - System and device for drip irrigation anti-blocking simulation of high-sand-content water source

Info

Publication number: CN111445773A
Application number: CN202010272929.5A
Authority: CN
Inventors: 吴文勇; 岑睿; 胡雅琪; 孙耀民
Original assignee: China Institute of Water Resources and Hydropower Research
Current assignee: China Institute of Water Resources and Hydropower Research
Priority date: 2020-04-08
Filing date: 2020-04-08
Publication date: 2020-07-24
Anticipated expiration: 2040-04-08
Also published as: CN111445773B

Abstract

The invention discloses a system and a device for drip irrigation anti-blocking simulation of a high-sand-content water source, and relates to the technical field of agricultural water-saving irrigation. The system and the device for simulating the anti-blocking of the drip irrigation of the high-sand-content water source comprise a batching mechanism and a drip irrigation mechanism, wherein the batching mechanism comprises a batching part, a circulating pump and a flushing pipeline, an accommodating cavity for accommodating silt and water is arranged in the batching part, the liquid inlet end of the circulating pump is communicated with the accommodating cavity, the liquid outlet end of the circulating pump is connected with the flushing pipeline, and the flushing pipeline is accommodated in the accommodating cavity and used for flushing the silt and the water in the accommodating cavity to form mixed liquid; the drip irrigation mechanism is communicated with the accommodating cavity and used for outputting mixed liquid so as to simulate drip irrigation. The system and the device for simulating the anti-blocking of the drip irrigation of the high-sand-content water source better simulate the actual drip irrigation scene and can obtain more accurate and reliable test results.

Description

System and device for drip irrigation anti-blocking simulation of high-sand-content water source

Technical Field

The invention relates to the technical field of agricultural water-saving irrigation, in particular to a system and a device for drip irrigation anti-blocking simulation of a high-sand-content water source.

Background

With the development of science and technology, the farmland irrigation form is gradually converted from a rough river water flood irrigation form to a fine river water drip irrigation form. As river water has the characteristic of high silt content, the blockage of the irrigator is a technical problem of drip irrigation popularization, and the cause and mechanism of the blockage of the irrigator and the influence of the structure of the irrigator on the blockage resistance are research hotspots in the field.

The drip irrigation anti-blocking simulation device adopted at present is generally provided with a stirring paddle to stir and mix silt and water so as to obtain mixed liquid required by a test. In the working process of the device, the mixed liquid is in a vortex shape, the difference between the mixed liquid and the flowing and billowing river water in the natural state is large, and the reliability of the test result obtained in the state is naturally low.

Disclosure of Invention

The invention aims to provide a system and a device for simulating the anti-blocking of a high-sand-content water source by drip irrigation, which can more accurately simulate the state of river water in a natural state so as to obtain a more accurate test result.

The invention provides a technical scheme that:

a system and a device for simulating the anti-blocking of the drip irrigation of a high-sand water source comprise a material distribution mechanism and a drip irrigation mechanism,

the batching mechanism comprises a batching part, a circulating pump and a flushing pipeline, wherein a containing cavity for containing silt and water is arranged in the batching part, the liquid inlet end of the circulating pump is communicated with the containing cavity, the liquid outlet end of the circulating pump is connected with the flushing pipeline, and the flushing pipeline is contained in the containing cavity and is used for flushing and mixing the silt and the water in the containing cavity into mixed liquid;

the drip irrigation mechanism is communicated with the accommodating cavity and used for outputting the mixed liquid so as to simulate drip irrigation.

Furthermore, the material flushing pipeline comprises a plurality of material flushing ring pipes, the material flushing ring pipes are communicated with the liquid outlet end of the circulating pump, a plurality of punching groups are uniformly arranged in the material flushing ring pipes along the extension direction of the material flushing ring pipes, and the punching groups are used for flushing and mixing silt and water in the accommodating cavity.

Furthermore, a plurality of the material punching ring pipes are concentrically arranged on the bottom wall of the accommodating cavity defined by the ingredient parts, and a rolling interval is formed between every two adjacent material punching ring pipes.

Furthermore, a plurality of punching groups respectively arranged on two adjacent punching ring pipes respectively correspond to each other.

Furthermore, the punching group comprises a first punching hole and a second punching hole, and the first punching hole and the second punching hole are arranged on the section of the punching ring pipe with the same diameter.

Furthermore, the first punching hole and the second punching hole are symmetrically arranged on two sides in the direction perpendicular to the bottom wall of the batching member.

Further, the opening direction of the first punching hole and the bottom wall of the batching member form an included angle of 45 +/-1 degrees.

Furthermore, the material flushing pipeline also comprises a collecting pipe and a plurality of shunt pipes, each material flushing ring pipe is connected with the collecting pipe through the shunt pipes, and the collecting pipe is connected with the liquid outlet end of the circulating pump.

Furthermore, a plurality of the shunt tubes connected with the same material punching ring tube are uniformly distributed on the material punching ring tube.

Furthermore, the drip irrigation mechanism comprises a variable frequency pump, a drip irrigation support, a drip irrigation tape and a test support platform, wherein the liquid inlet end of the variable frequency pump is communicated with the accommodating cavity, the liquid outlet end of the variable frequency pump is connected with the drip irrigation tape, the drip irrigation tape and the test support platform are respectively arranged on the support, and the drip irrigation tape is provided with a plurality of emitter drippers for dripping the mixed liquid on the test support platform.

Compared with the prior art, the system and the device for simulating the anti-blocking of the drip irrigation of the high-sand-content water source have the advantages that the sand and the water in the batching part are washed and mixed by adopting a structural form of combining the circulating pump and the material flushing pipeline in the batching mechanism to prepare the mixed liquid. The stirring of having removed the stirring rake from, the flow of river turns over the state of gushing under the natural state more to make the controllable sand rate, the grain size gradation and the muddy sand degree of mixing liquid that drip irrigation the mechanism and obtain more press close to the river under the natural state, the actual scene of driping irrigation in farmland is pressed close to more to the experimentation, and then the test result that obtains is more reliable. Therefore, the drip irrigation anti-blocking simulation system and device for the high-sand-content water source have the advantages that: the actual drip irrigation scene is better simulated, and more accurate and reliable test results can be obtained.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below. It is appreciated that the following drawings depict only certain embodiments of the invention and are therefore not to be considered limiting of its scope. For a person skilled in the art, it is possible to derive other relevant figures from these figures without inventive effort.

Fig. 1 is a schematic structural diagram of a drip irrigation anti-clogging simulation system and device for a high sand-containing water source provided by an embodiment of the invention;

FIG. 2 is a schematic structural view of the flushing pipeline in FIG. 1;

FIG. 3 is a schematic diagram of the punching set on the punching collar in FIG. 2;

fig. 4 is a schematic diagram showing that the flushing of the material flushing loop in fig. 2 drives the mixed liquid to roll in practical application.

Icon: 10-drip irrigation anti-clogging simulation system and device for high sand-containing water source; 100-a dosing mechanism; 110-a dosing member; 111-a housing chamber; 130-circulation pump; 150-punching a material pipeline; 151-punching material ring pipe; 1511-punching group; 1513-first punching hole; 1515-second punching hole; 153-shunt tube; 155-a collector tube; 157-rolling interval; 200-a drip irrigation mechanism; 210-a variable frequency pump; 230-drip irrigation support; 250-drip irrigation tape; 251-drip irrigation branch pipes; 253-emitter drippers; 255-drip irrigation regulating switch; 270-test support platform.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "inside", "outside", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or the orientations or positional relationships that the products of the present invention are conventionally placed in use, or the orientations or positional relationships that are conventionally understood by those skilled in the art, and are used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is also to be noted that, unless otherwise explicitly stated or limited, the terms "disposed" and "connected" are to be interpreted broadly, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; the connection may be direct or indirect via an intermediate medium, and may be a communication between the two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The following detailed description of embodiments of the invention refers to the accompanying drawings.

Examples

Referring to fig. 1, the system and apparatus 10 for simulating anti-clogging of drip irrigation for a high sand-containing water source provided by the present embodiment includes a material-preparing mechanism 100 and a drip irrigation mechanism 200, wherein the material-preparing mechanism 100 is configured to simulate a flowing and turning-over state of river water in a natural state to obtain a mixed liquid of silt and water, and the drip irrigation mechanism 200 is configured to simulate drip irrigation for the mixed liquid in the material-preparing mechanism 100. The system and the device 10 for simulating the anti-blocking of the drip irrigation of the high-sand-content water source better simulate the actual drip irrigation scene and can obtain more accurate and reliable test results.

The batching mechanism 100 comprises a batching member 110, a circulating pump 130 and a material flushing pipeline 150, wherein a containing cavity 111 for containing silt and water is arranged in the batching member 110, in the embodiment, the batching member 110 is barrel-shaped, and the containing cavity 111 is defined by the bottom wall and the side wall of the batching member. The flushing pipeline 150 is accommodated in the accommodating cavity 111 and connected to the liquid outlet end of the circulating pump 130, the liquid inlet end of the circulating pump 130 directly extends into the accommodating cavity 111, and the circulating pump 130 is used for pumping the mixed liquid in the accommodating cavity 111 and flushes the mixed liquid into the accommodating cavity 111 again through the flushing pipeline 150, so that the silt and the water in the accommodating cavity 111 are turned over and gushed in a mixed liquid state.

Referring to fig. 1 and 2, the material flushing pipeline 150 includes a plurality of material flushing circular pipes 151, a plurality of flow dividing pipes 153, and a collecting pipe 155, the plurality of material flushing circular pipes 151 are concentrically disposed on a bottom wall of the accommodating cavity 111 surrounded by the material preparing member 110, a rolling section 157 is formed between two adjacent material flushing circular pipes 151, a plurality of flushing hole sets 1511 are uniformly disposed in the material flushing circular pipes 151 along an extending direction thereof, each material flushing circular pipe 151 is connected to the collecting pipe 155 through the plurality of flow dividing pipes 153, and the collecting pipe 155 is connected to a liquid outlet end of the circulating pump 130.

In practical application, the circulating pump 130 extracts the mixed liquid in the accommodating cavity 111 and outputs the mixed liquid to the plurality of shunt tubes 153 through the collecting pipe 155, the mixed liquid is output to the plurality of material flushing ring pipes 151 through the plurality of shunt tubes 153, and the mixed liquid is flushed into the accommodating cavity 111 through the plurality of punching groups 1511 arranged on the material flushing ring pipes 151, so that the mixed liquid drives the silt and the water in the accommodating cavity 111 to mix and roll.

In this embodiment, the material punching ring pipes 151 are circular corresponding to the barrel-shaped ingredient part 110, and the plurality of material punching ring pipes 151 are concentrically arranged with the circular bottom wall of the ingredient part 110, so that a certain gap is formed between the material punching ring pipe 151 located at the outermost ring and the side wall of the ingredient part 110 to ensure the scouring effect and reduce the energy loss. In other embodiments, the shape of the blanking collar 151 can be modified according to the shape of the dispensing member 110 or the actual application requirements, such as a rectangular ring shape. The punching groups 1511 respectively disposed on two adjacent punching collars 151 correspond to each other, that is, the punching group 1511 disposed on any punching collar 151 and the punching group 1511 correspondingly disposed on the adjacent punching collar 151 are located in the same radial direction of the circular bottom wall of the ingredient component 110.

In order to ensure the hydraulic pressure of the mixed liquid reaching each punching group 1511 on the punching loop 151 to be balanced, a plurality of shunt tubes 153 connected to the same punching loop 151 are uniformly distributed on the punching loop 151. In this embodiment, the same material flushing ring pipe 151 is connected to the collecting pipe 155 through two flow dividing pipes 153, one ends of the two flow dividing pipes 153 are connected to two ends of the material flushing ring pipe 151 in the same diameter direction, and the other ends of the two flow dividing pipes 153 are connected to the collecting pipe 155. In other embodiments, the same blanking collar 151 may be connected to the manifold 155 by other numbers of split collars.

In addition, in this embodiment, the number of the material flushing ring pipes 151 is two, and the collecting pipe 155 is a straight pipe, so that for convenience of installation and connection, two shunt pipes 153 arranged on the material flushing ring pipe 151 at the inner ring and two shunt pipes 153 arranged on the material flushing ring pipe 151 at the outer ring are located in the same vertical plane, that is, one end of each of the four shunt pipes 153, which is far away from the material flushing ring pipe 151, is connected to the side wall of the collecting pipe 155, one end of the collecting pipe 155 is connected to the liquid outlet end of the circulating pump 130, and the other end is closed.

In practical application, after the liquid inlet end of the circulating pump 130 sucks the mixed liquid in the accommodating cavity 111, the mixed liquid is input into the collecting pipe 155 from the liquid outlet end of the circulating pump 130, the collecting pipe 155 equally divides the mixed liquid into four shunt pipes 153, and the two shunt pipes 153 connected with the same flushing ring pipe 151 are used for conveying the mixed liquid input into the flushing ring pipe 151 to the positions at the two ends of the flushing ring pipe 151 in the same diameter direction in an isobaric manner, so that the pressure of the mixed liquid flushed out by the punching groups 1511 on the flushing ring pipe 151 is ensured to be balanced.

Referring to fig. 2 and fig. 3, the punching set 1511 includes a first punching hole 1513 and a second punching hole 1515, and the first punching hole 1513 and the second punching hole 1515 are disposed on a cross section of the punching collar 151 with the same diameter. That is, a plurality of first material punching holes 1513 on the same material punching ring pipe 151 are uniformly distributed along the extending direction of the material punching ring pipe 151, a plurality of second material punching holes 1515 on the same material punching ring pipe 151 are also uniformly distributed along the extending direction of the material punching ring pipe 151, and each first material punching hole 1513 and one second material punching hole 1515 are correspondingly arranged on the same pipe diameter section.

The plurality of flushing collars 151 are concentrically arranged on the circular bottom wall of the barrel-shaped batching member 110, in order to better simulate the flowing and surging state of river water under a natural state, the first flushing hole 1513 and the second flushing hole 1515 are symmetrically arranged on two sides in the direction perpendicular to the bottom wall of the batching member 110, and the opening direction of the first flushing hole 1513 points to the bottom wall of the batching member 110, namely the opening direction of the second flushing hole 1515 also points to the bottom wall of the batching member 110.

Referring to fig. 4, in the actual operation process, the mixed liquid input into the material-punching loop 151 through the flow dividing pipe 153 flows through the plurality of punching groups 1511 in sequence along the extending direction of the material-punching loop 151, and when the mixed liquid reaches one punching group 1511, the mixed liquid is flushed from the first punching hole 1513 and the second punching hole 1515 of the punching group 1511 to the bottom wall of the ingredient component 110.

The second material flushing hole 1515 in the material flushing ring pipe 151 in the inner ring and the first material flushing hole 1513 in the material flushing ring pipe 151 in the outer ring are flushed towards the rolling region 157 relatively, the mixed liquid flushed from the second material flushing hole 1515 in the inner ring drives the precipitated silt at the bottom of the rolling region 157 to obliquely upwards close to the outer ring to tumble, the mixed liquid flushed from the first material flushing hole 1513 in the outer ring drives the precipitated silt at the bottom of the rolling region 157 to obliquely upwards close to the inner ring to tumble, and in the space vertically above the rolling region 157, the mixed liquids flushed and rolled by the inner ring and the outer ring meet for further mixing.

The plurality of first material flushing holes 1513 in the material flushing ring pipe 151 of the inner ring are distributed annularly, the inner ring is used for flushing the bottom region of the batching member 110 surrounded by the material flushing ring pipe 151 obliquely, the annular convolution is used for collecting sediment at the bottom of the batching member 110 and driving the annular sedimentation sediment to collect above the region vertically, and the continuous flushing process forms a continuous mixed liquid rolling state to further remix the sediment in the mixed liquid above the vertical region.

Therefore, this towards material pipeline 150 fine has imitated the natural state of turning over of river in the riverbed, and the mixed state of silt and water is more close with the river in the mixed liquid, and then, adopts this system and device 10 of anti-blocking simulation is driped irrigation to high husky water source to test and more to press close to the actual scene of driping irrigation in yellow river basin farmland, and the test result of obtaining is more accurate.

Further, in order to reduce the energy consumption of the mixed liquid flushed from the first flushing hole 1513 and the second flushing hole 1515 and ensure the flushing force and the flushing area of the mixed liquid, in this embodiment, the opening direction of the first flushing hole 1513 and the direction perpendicular to the bottom wall of the ingredient 110 form an included angle of 45 °, that is, the opening direction of the first flushing hole 1513 and the bottom wall of the ingredient 110 form an included angle of 45 °, the second flushing hole 1515 and the first flushing hole 1513 are symmetrically arranged, that is, the opening direction of the second flushing hole 1515 and the bottom wall of the ingredient 110 also form an included angle of 45 °, and the included angle between the first flushing hole 1513 and the second flushing hole 1515 is 90 °. The actual included angle is allowed to be in the range of 45 ° ± 1 ° in consideration of the machining error.

With continued reference to fig. 1, the drip irrigation mechanism 200 includes a variable frequency pump 210, a drip irrigation bracket 230, a drip irrigation tape 250, and a test support platform 270.

The liquid inlet end of the variable frequency pump 210 directly extends into the accommodating cavity 111 through a pipeline, and the liquid outlet end of the variable frequency pump is connected with the drip irrigation tape 250 and used for pumping the mixed liquid in the accommodating cavity 111 to the drip irrigation tape 250. Drip irrigation zone 250 and test supporting platform 270 set up respectively on drip irrigation support 230, and test supporting platform 270 sets up in the vertical below of drip irrigation zone 250, is provided with a plurality of emitter drippers 253 on the drip irrigation zone 250 for drip irrigation the mixed liquid to test supporting platform 270 on, so that test supporting platform 270 samples.

In this embodiment, the drip irrigation tape 250 is rectangular and annular, a plurality of drip irrigation branch pipes 251 are arranged between two opposite sides of the drip irrigation tape 250 in parallel, a plurality of emitter drippers 253 are arranged on each drip irrigation branch pipe 251, drip irrigation regulating switches 255 are arranged at two ends of each drip irrigation branch pipe 251, and the flow of the mixed liquid entering the corresponding drip irrigation branch pipe 251 is controlled by regulating the opening of each drip irrigation regulating switch 255.

In the system and the device 10 for simulating anti-clogging of drip irrigation at a high-sand-content water source, provided by the embodiment, in the actual working process, the batching mechanism 100 simulates a natural rolling state of river water carrying sand to drive the mixed liquid to roll in the accommodating cavity 111 of the batching member 110, the variable frequency pump 210 of the drip irrigation mechanism 200 pumps the mixed liquid in the accommodating cavity 111 to the drip irrigation tape 250, the drip irrigation tape 250 simulates drip irrigation through the plurality of emitter drippers 253, and the test supporting platform 270 performs sampling. In the test process, an operator can quantitatively control parameters such as sand content, sand conveying rate and the like of the mixed liquid to carry out a simulation drip irrigation test to obtain a drip irrigation blocking mechanism under the conditions of different solid contents and different sand and sand solid particle size grades, and the drip irrigation anti-blocking simulation system and the device 10 for the high sand-content water source can also carry out river drip irrigation anti-blocking performance screening on drip irrigation belts 250 of different types or models.

In summary, the system and the device 10 for simulating anti-clogging during drip irrigation of a high sand-containing water source provided by the embodiment have the advantages that the batching mechanism 100 is closer to the actual drip irrigation scene of the farmland in the yellow river basin by simulating the natural surge state of river water in the riverbed, and the obtained test result is more accurate.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A system and a device for simulating the anti-blocking of the drip irrigation of a high-sand water source are characterized by comprising a material mixing mechanism and a drip irrigation mechanism,

2. The system and device for drip irrigation anti-clogging simulation of a high sand-containing water source according to claim 1, wherein the flushing pipe comprises a plurality of flushing circular pipes, the plurality of flushing circular pipes are all communicated with the liquid outlet end of the circulating pump, the flushing circular pipes are uniformly provided with a plurality of flushing groups along the extension direction, and the plurality of flushing groups are used for flushing and mixing the silt and the water in the accommodating cavity.

3. The system and apparatus for simulating anti-clogging of drip irrigation from a high sand-containing water source according to claim 2, wherein a plurality of said flushing material rings are concentrically arranged on the bottom wall of said accommodating cavity surrounded by said batching member, and a rolling space is formed between two adjacent flushing material rings.

4. The system and apparatus for simulating anti-clogging of drip irrigation for high sand-containing water source according to claim 3, wherein the punching groups of two adjacent punching rings are corresponding to each other.

5. The system and apparatus for simulating anti-clogging of drip irrigation from a high sand-containing water source according to claim 2, wherein the punching set comprises a first punching hole and a second punching hole, and the first punching hole and the second punching hole are opened on the same pipe diameter section of the punching loop.

6. The system and apparatus for simulating high sand content water source drip irrigation anti-clogging according to claim 5, wherein the first punching hole and the second punching hole are symmetrically arranged on both sides in a direction perpendicular to the bottom wall of the ingredient.

7. The system and device for simulating anti-clogging of drip irrigation for high sand-containing water sources according to claim 6, wherein the opening direction of the first punching hole forms an included angle of 45 ° ± 1 ° with the bottom wall of the batching member.

8. The system and apparatus for simulating anti-clogging of drip irrigation from a high sand-containing water source according to claim 2, wherein the flushing pipe further comprises a manifold and a plurality of shunt pipes, each flushing pipe is connected to the manifold through the plurality of shunt pipes, and the manifold is connected to the outlet end of the circulation pump.

9. The system and apparatus for simulating anti-clogging of drip irrigation from a high sand-containing water source of claim 8, wherein said plurality of said diversion pipes connected to the same said flushing collar are evenly distributed on said flushing collar.

10. The system and device for simulating anti-clogging of drip irrigation for a high sand-containing water source according to claim 1, wherein the drip irrigation mechanism comprises a variable frequency pump, a drip irrigation support, a drip irrigation tape and a testing support platform, wherein a liquid inlet end of the variable frequency pump is communicated with the accommodating cavity, a liquid outlet end of the variable frequency pump is connected with the drip irrigation tape, the drip irrigation tape and the testing support platform are respectively arranged on the support, and a plurality of emitter drippers are arranged on the drip irrigation tape and used for dripping the mixture on the testing support platform.