CN116423863A - Manufacturing method of micro-irrigation pipeline and micro-irrigation pipeline - Google Patents
Manufacturing method of micro-irrigation pipeline and micro-irrigation pipeline Download PDFInfo
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- CN116423863A CN116423863A CN202310306458.9A CN202310306458A CN116423863A CN 116423863 A CN116423863 A CN 116423863A CN 202310306458 A CN202310306458 A CN 202310306458A CN 116423863 A CN116423863 A CN 116423863A
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- Prior art keywords
- water
- pipe body
- absorbing
- micro
- foam layer
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- 238000003973 irrigation Methods 0.000 title claims abstract description 58
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 56
- 239000006260 foam Substances 0.000 claims abstract description 36
- 238000000034 method Methods 0.000 claims abstract description 16
- 230000008569 process Effects 0.000 claims abstract description 8
- 239000002250 absorbent Substances 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 239000002657 fibrous material Substances 0.000 claims description 4
- 239000007783 nanoporous material Substances 0.000 claims description 4
- 239000002689 soil Substances 0.000 abstract description 8
- 230000002262 irrigation Effects 0.000 description 21
- 241000196324 Embryophyta Species 0.000 description 14
- 230000002745 absorbent Effects 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 235000015097 nutrients Nutrition 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229940059082 douche Drugs 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000003621 irrigation water Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G25/00—Watering gardens, fields, sports grounds or the like
- A01G25/02—Watering arrangements located above the soil which make use of perforated pipe-lines or pipe-lines with dispensing fittings, e.g. for drip irrigation
- A01G25/023—Dispensing fittings for drip irrigation, e.g. drippers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Soil Sciences (AREA)
- Water Supply & Treatment (AREA)
- Environmental Sciences (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention discloses a manufacturing method of a micro-irrigation pipeline and the micro-irrigation pipeline, wherein the method comprises the following steps: s1, manufacturing a pipe body, a water-absorbing foam layer and a filter layer respectively or simultaneously; s2, firmly attaching a water-absorbing foam layer and a filter layer on the inner wall of the pipe body through a coextrusion process, covering the water-absorbing foam layer on the bottom end of the inner wall of the pipe body, covering the filter layer above the water-absorbing foam layer, and firmly connecting two sides of the filter layer with the inner wall of the pipe body; s3, installing a plurality of water-absorbing wire harnesses at the bottom end of the pipe body, enabling two ends of the water-absorbing wire harnesses to be located outside the pipe body, fixing the middle part of the water-absorbing wire harnesses in a water-absorbing foam layer in the pipe body, and determining the distance between two adjacent water-absorbing wire harnesses according to the plant spacing of an actual application scene. The invention can save water resources, improve the stability and the operation convenience of the micro-irrigation system, reduce the manufacturing cost and the use cost, adaptively adjust the water supply according to the plant and soil conditions, and better promote the growth of crops.
Description
Technical Field
The invention relates to the technical field of water-saving irrigation, in particular to a manufacturing method of a micro-irrigation pipeline and the micro-irrigation pipeline.
Background
The micro irrigation is an irrigation method for uniformly and accurately delivering water and nutrients required by crop growth to soil near the root of the crop with small flow through a pipeline system and an irrigator arranged on a final pipeline according to the crop requirement. Compared with traditional ground irrigation and sprinkling irrigation with full-area wetting, micro irrigation wets part of soil near the root zone of crops only with a smaller flow, and is also called local irrigation technology. Drip irrigation, which is one of micro-irrigation technology, is a comparatively water-saving irrigation mode at present, but the following problems still exist in practical application:
(1) The drip irrigation pipe and the emitter or the patch embedded in the drip irrigation belt are constructed by adopting labyrinth injection molding, so that two key requirements of blocking prevention and water flow reduction are in contradiction, the pressure and the water flow are required to be increased for blocking prevention, but the pressure is required to be reduced for controlling the water flow, the blocking is easy to generate in use, the recovery is difficult, and the whole paving area is scrapped; (2) The current drip irrigation system is the same as spray pipes, fog irrigation and the like, still belongs to an open-loop water supply control mode, and can only determine the water supply amount according to manual or instrument judgment, and the water supply amount cannot be adaptively feedback adjusted according to soil, climate and crop conditions; (3) Drip irrigation pipes and drip irrigation belts adopting the douche or the embedded patch are required to be customized in advance according to different plant intervals, so that the production, sales and use varieties are numerous, and the stock occupation and management of factories and users are complicated.
Disclosure of Invention
In order to solve the problems in the background art, the invention adopts the following technical scheme:
a manufacturing method of a micro-irrigation pipeline comprises the following steps:
s1, manufacturing a pipe body, a water-absorbing foam layer and a filter layer respectively or simultaneously;
s2, firmly attaching a water-absorbing foam layer and a filter layer on the inner wall of the pipe body through a coextrusion process, covering the water-absorbing foam layer on the bottom end of the inner wall of the pipe body, covering the filter layer above the water-absorbing foam layer, and tightly connecting two sides of the filter layer with the inner wall of the pipe body;
s3, installing a plurality of water-absorbing wire harnesses at the bottom end of the pipe body, and enabling two ends of the water-absorbing wire harnesses to be located outside the pipe body, wherein the middle part of the water-absorbing wire harnesses is fixed in a water-absorbing foam layer in the pipe body, and the distance between two adjacent water-absorbing wire harnesses is determined according to the plant spacing of an actual application scene.
In some embodiments, in step S1, the tube body is made of a PE pipe, and the filter layer is made of a micro-nano pore material; in step S3, the water absorbent strands are made of hydrophilic fiber materials.
In some embodiments, in step S2, the cross-sectional area of the filter layer and the water-absorbent foam layer as a whole is 1/4-1/3 of the cross-sectional area of the tube body.
In some embodiments, the absorbent strands have a length of 10-50mm and a diameter of 2-6mm.
In some embodiments, in step S3, when a plurality of water-absorbing wire bundles are installed at the bottom end of the pipe body, the method specifically includes the following steps: for any position at the bottom end of the pipe body, which is to be provided with the water-absorbing wire harness, two penetrating holes are formed at the bottom end of the pipe body, then the water-absorbing wire harness penetrates from one penetrating hole, penetrates from the other penetrating hole, and is fixed in the water-absorbing foam layer in the pipe body.
The invention further provides a micro-irrigation pipeline which comprises a pipeline body, a water absorption foam layer, a filter layer and a water absorption wire harness, and the micro-irrigation pipeline is manufactured by the manufacturing method of the micro-irrigation pipeline.
Compared with the prior art, the invention has the beneficial effects that:
the manufacturing method of the micro-irrigation pipeline and the micro-irrigation pipeline provided by the invention can save water resources, improve the stability and the operation convenience of a micro-irrigation system, reduce the manufacturing cost and the use cost, adaptively adjust the water supply according to the plant and soil conditions, and timely manufacture according to the plant spacing requirement, and better promote the growth of crops.
Drawings
FIG. 1 is a schematic flow chart of a method for manufacturing a micro-irrigation pipe according to the present invention;
FIG. 2 is a schematic diagram of the interior of the micro-irrigation pipe provided by the invention;
FIG. 3 is a schematic view of section A-A of FIG. 2.
Reference numerals illustrate:
1. a tube body; 2. a filter layer; 3. a water absorbing wire harness; 4. a water-absorbing foam layer.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the present invention easy to understand, the following further describes how the present invention is implemented with reference to the accompanying drawings and the detailed description.
Referring to fig. 1 to 3, the invention provides a manufacturing method of a micro-irrigation pipeline, which comprises the following steps:
s1, manufacturing the pipe body 1, the water-absorbing foam layer 4 and the filter layer 2 respectively or simultaneously;
s2, firmly attaching a water-absorbing foam layer 4 and a filter layer 2 on the inner wall of the pipe body 1 through a coextrusion process, covering the water-absorbing foam layer 4 on the bottom end of the inner wall of the pipe body 1, covering the filter layer 2 above the water-absorbing foam layer 4, and tightly connecting two sides of the filter layer 2 with the inner wall of the pipe body 1;
s3, installing a plurality of water-absorbing wire harnesses 3 at the bottom end of the pipe body 1, enabling two ends of the water-absorbing wire harnesses 3 to be located outside the pipe body 1, fixing the middle part of the water-absorbing wire harnesses 3 in the water-absorbing foam layer 4 in the pipe body 1, and enabling the distance between two adjacent water-absorbing wire harnesses 3 to be determined according to the plant distance of an actual application scene.
The invention realizes the composite structure of the pipeline in a three-layer coextrusion mode, and the composite pipeline can be continuously produced in the coextrusion mode, thereby greatly reducing the production cost and improving the production efficiency.
Preferably, in step S1, the tube body 1 is made of a PE pipe, and the filter layer 2 is made of a micro-nano pore material; in step S3, the water absorbent wire bundle 3 is made of a hydrophilic fiber material.
Preferably, in the step S2, during the coextrusion process, the cross-sectional area of the filter layer 2 and the water-absorbing foam layer 4 as a whole occupies 1/4 to 1/3 of the inner cross-sectional area of the pipe body 1, and the wrap angle alpha of the filter layer 2 can be 45 degrees to 90 degrees.
In addition, the length of the water absorbent wire harness 3 may be 10 to 50mm and the diameter d may be 2 to 6mm. The length and diameter of the water absorbing strands 3 may be determined by the water demand in the application environment.
Preferably, in step S3, when a plurality of water absorbing wire harnesses 3 are installed at the bottom end of the pipe body 1, the method specifically includes the steps of: for any position of the bottom end of the pipe body 1, where the water absorbing wire harness 3 is to be installed, two through holes are formed in the bottom end of the pipe body 1, then the water absorbing wire harness 3 penetrates through one through hole and penetrates out of the other through hole, and is fixed in the water absorbing foam layer 4 in the pipe body 1. In a specific operation, a special mechanical or manual tool with an arc-shaped crochet hook can be adopted to feed the water absorbent wire bundle 3 from one through hole and pass out from the other through hole, so that the perforation operation of the water absorbent wire bundle 3 is completed.
It can be understood that the size of the through holes on the pipe body 1 can correspond to the diameter of the water absorbing wire harness 3, and the distance a1 between two through holes through which the same water absorbing wire harness 3 passes can be 5-30mm; in addition, the distance L1 between two adjacent water absorbing strands 3 may be determined by the plant spacing of the actual required application scenario; the inner diameter D of the tube body 1 may be 20-50mm.
The conventional drip irrigation pipe or the drip irrigation tape with the embedded patch is required to be produced and supplied separately according to plant spacing, and a large amount of stock is required. However, the micro-irrigation pipeline manufactured by the manufacturing method of the micro-irrigation pipeline provided by the invention is free from the definition of plant spacing, can be prefabricated in a large batch in earlier stage, and is installed on the pipeline body 1 by using other special mechanical or manual tools according to the requirements of the plant spacing of customers during use, so that the process can be flexibly carried out in workshops or use sites, thereby improving the production organization efficiency and saving the product cost.
The invention further provides a micro-irrigation pipeline which comprises a pipeline body 1, a water-absorbing foam layer 4, a filter layer 2 and a water-absorbing wire harness 3, and the micro-irrigation pipeline is manufactured by the manufacturing method of the micro-irrigation pipeline.
The working principle of the micro-irrigation pipeline provided by the invention is as follows: when irrigation water or water fertilizer-in-one liquid medium passes through the pipe body 1 at a lower pressure (1-2 m water column), particulate matters and microorganisms are blocked outside the filter layer 2 due to the blocking effect of the micron/nano-level filter layer 2, and the micromolecular liquid medium is actively sucked under the capillary force effect of the lower water-absorbing foam layer 4, so that an aqueous layer is formed in the water-absorbing foam layer 4, water in the aqueous layer is in a controlled state, the water or liquid medium in the aqueous layer is slowly released outside the pipe body 1 through the water-absorbing wire bundle 3, and the water or liquid nutrient medium oozed out is absorbed by the soil and plant root systems of the water-absorbing wire bundle 3 through the capillary force. When the outside water is sufficient, the pressure difference between the inner capillary tube and the outer capillary tube of the tube body 1 is reduced or eliminated, the water seepage process is stopped temporarily, and the water seepage and water absorption process is restarted until the next capillary pressure difference is formed. The circulation is repeated, the self-adaptive water control effect of the pipe body 1 is achieved, the water and nutrition requirements of plants are met to the maximum extent, and water is effectively and saved.
It can be understood that, because the filter layer 2 is made of micro-nano pore materials and is integrally distributed with the water-absorbing foam layer 4 along the length direction of the pipe body 1, water in the pipe body 1 can infiltrate into the water-absorbing foam layer 4 from different positions, so that an aqueous layer is formed in the water-absorbing foam layer 4, and meanwhile, particles and microorganisms can be blocked outside the filter layer 2, so that blockage below is avoided; in addition, the inside of the pipe body 1 can be cleaned by periodically pressurizing and adding flow so as to bring out solid particles attached to the filter layer 2, so that the filter layer 2 can keep water filtering performance for a long time, and the service life is prolonged.
In addition, the manufacturing method of the micro-irrigation pipeline and the micro-irrigation pipeline provided by the invention separate the filtering and water control functions, overcome the inherent contradiction of the traditional drip irrigation pipe or drip irrigation belt in filtering and water control, and utilize the capillary force of the water-absorbing foam layer 4 to finish water storage and water control under the low-pressure operation condition of the pipeline, thereby reducing the manufacturing cost and the use cost of an irrigation system.
The invention also connects the water-bearing layer in the pipe body with the external soil root system through the water-absorbing wire harness 3, and utilizes capillary pressure difference to control the water supply quantity, thereby realizing self-adaptive adjustment and overcoming the defect of forced water supply in the traditional irrigation mode. The water supply mode is more water-saving and more accords with the growth characteristics of plants. The water-absorbing wire harness 3 can be made of nylon fiber materials with good ageing resistance, tensile strength and hydrophilicity, and has long service life and good water control effect.
In summary, the manufacturing method of the micro-irrigation pipeline and the micro-irrigation pipeline provided by the invention can save water resources, improve the stability and the operation convenience of a micro-irrigation system, reduce the manufacturing cost and the use cost, adaptively adjust the water supply according to the plant and soil conditions, and timely manufacture according to the plant spacing requirement, and better promote the growth of crops.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.
Claims (6)
1. The manufacturing method of the micro-irrigation pipeline is characterized by comprising the following steps of:
s1, manufacturing the pipe body (1), the water-absorbing foam layer (4) and the filter layer (2) respectively or simultaneously;
s2, firmly attaching a water-absorbing foam layer (4) and a filter layer (2) on the inner wall of the pipe body (1) through a coextrusion process, enabling the water-absorbing foam layer (4) to cover the bottom end of the inner wall of the pipe body (1), enabling the filter layer (2) to cover the upper portion of the water-absorbing foam layer (4), and enabling two sides of the filter layer (2) to be tightly connected with the inner wall of the pipe body (1);
s3, a plurality of water-absorbing wire harnesses (3) are installed at the bottom end of the pipe body (1), the two ends of each water-absorbing wire harness (3) are located outside the pipe body (1), the middle part of each water-absorbing wire harness (3) is fixed in a water-absorbing foam layer (4) in the pipe body (1), and the distance between every two adjacent water-absorbing wire harnesses (3) is determined according to the plant spacing of an actual application scene.
2. The method for manufacturing a micro-irrigation pipe according to claim 1, wherein in the step S1, the pipe body (1) is made of a PE pipe, and the filter layer (2) is made of a micro-nano pore material; in the step S3, the water-absorbing wire bundle (3) is made of hydrophilic fiber materials.
3. The method according to claim 1, wherein in step S2, the cross-sectional area of the filter layer (2) and the water-absorbent foam layer (4) is 1/4-1/3 of the inner cross-sectional area of the tube body (1).
4. The method for manufacturing a micro-irrigation pipe according to claim 1, wherein the length of the water-absorbing wire harness (3) is 10-50mm and the diameter is 2-6mm.
5. The method of manufacturing a micro-irrigation pipe according to claim 1, wherein in step S3, when a plurality of water-absorbing wire harnesses (3) are installed at the bottom end of the pipe body (1), specifically comprising the steps of: for any position of the bottom end of the pipe body (1) where the water absorbing wire harness (3) is to be installed, two penetrating holes are formed in the bottom end of the pipe body (1), then the water absorbing wire harness (3) penetrates from one penetrating hole, penetrates from the other penetrating hole and is fixed in the water absorbing foam layer (4) in the pipe body (1).
6. A micro-irrigation pipe, characterized by comprising a pipe body (1), a water-absorbing foam layer (4), a filter layer (2) and a water-absorbing wire harness (3), and being manufactured by the manufacturing method of the micro-irrigation pipe according to any one of claims 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310306458.9A CN116423863A (en) | 2023-03-27 | 2023-03-27 | Manufacturing method of micro-irrigation pipeline and micro-irrigation pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310306458.9A CN116423863A (en) | 2023-03-27 | 2023-03-27 | Manufacturing method of micro-irrigation pipeline and micro-irrigation pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116423863A true CN116423863A (en) | 2023-07-14 |
Family
ID=87084758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310306458.9A Pending CN116423863A (en) | 2023-03-27 | 2023-03-27 | Manufacturing method of micro-irrigation pipeline and micro-irrigation pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116423863A (en) |
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2023
- 2023-03-27 CN CN202310306458.9A patent/CN116423863A/en active Pending
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