CN105613213B - Water seepage drip irrigation emitter - Google Patents
Water seepage drip irrigation emitter Download PDFInfo
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- CN105613213B CN105613213B CN201410603178.5A CN201410603178A CN105613213B CN 105613213 B CN105613213 B CN 105613213B CN 201410603178 A CN201410603178 A CN 201410603178A CN 105613213 B CN105613213 B CN 105613213B
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- box body
- floating ball
- pipe
- drip irrigation
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 268
- 238000003973 irrigation Methods 0.000 title claims abstract description 64
- 230000002262 irrigation Effects 0.000 title claims abstract description 64
- 239000000463 material Substances 0.000 claims abstract description 15
- 210000004209 hair Anatomy 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000010521 absorption reaction Methods 0.000 claims abstract description 6
- 230000008595 infiltration Effects 0.000 claims abstract description 5
- 238000001764 infiltration Methods 0.000 claims abstract description 5
- 239000002689 soil Substances 0.000 claims description 34
- 239000000126 substance Substances 0.000 claims description 8
- 238000009792 diffusion process Methods 0.000 claims description 6
- 239000008400 supply water Substances 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 5
- 229920006395 saturated elastomer Polymers 0.000 claims description 5
- 239000012466 permeate Substances 0.000 claims description 4
- 229920000742 Cotton Polymers 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 230000001788 irregular Effects 0.000 claims description 3
- 229920002457 flexible plastic Polymers 0.000 claims description 2
- 210000004276 hyalin Anatomy 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 abstract 1
- 238000005260 corrosion Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 14
- 239000003621 irrigation water Substances 0.000 description 8
- 239000012535 impurity Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion
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Abstract
The utility model provides a infiltration drip irrigation emitter which characterized in that: comprises a box body, a water inlet, a water return port, a water inlet pipe, a water return pipe, a transparent pipe, a filter layer, a water dropper seat, a water seepage layer, a floating ball and a floating ball groove; the materials are all corrosion-resistant plastic products and are connected by adopting the prior art; the invention has the working principle that the infiltrating irrigation machine buried near the plant water-absorbing root hairs continuously seeps water for plant drip irrigation, and the infiltrating irrigation is adjusted according to the water absorption capacity of the plants, namely, the quantity of water used by the plants is supplemented, so that the waste of water is avoided, and the infiltrating irrigation machine is one of the most water-saving irrigation methods at present.
Description
Technical Field
The invention relates to the technical field of water-saving irrigation, in particular to a water seepage drip irrigation emitter device of an infiltration irrigation technology.
Background
The water-saving irrigation technology in China basically adopts the following steps: the irrigation method comprises the following steps of channel seepage prevention technology, pipeline water delivery technology, sprinkling irrigation technology, drip irrigation technology, surge irrigation, film irrigation, ridge irrigation technology and ditch irrigation technology. The water-saving irrigation technology plays a very big role in water-saving agriculture in China. The drip irrigation technology is popular with people, has great superiority compared with other water-saving irrigation technologies, can save a large amount of water, and is one of the water-saving irrigation technologies which are widely popularized at home and abroad. However, some imperfect places exist, such as a core component of drip irrigation, namely a 'water dropper', and after the drip irrigation device is used for a long time, the drip irrigation device is easily blocked by impurities and suspended matters in water to influence the drip irrigation effect; in countries with developed economy and water shortage in farmlands, water for irrigation is purified before being used for drip irrigation, so that the irrigation water is changed into pure water, and the drip emitters cannot be blocked no matter how long the drip emitters are used; after the drip irrigation technology is introduced in China, water purification treatment is basically not carried out on irrigation water, so that the cost is too high, people are difficult to receive the irrigation water, the cost can be reduced, the drip irrigation technology is greatly promoted in China, and the serious problem is brought to the front of people.
Disclosure of Invention
The invention provides a water seepage drip irrigation emitter which can avoid the influence of impurities and suspended matters in water on a drip irrigation emitter and achieve the purpose of carrying out water seepage irrigation on plants in a balanced manner according to the defects of the prior art.
The invention is composed of a box body, a water inlet, a water return port, a water inlet pipe, a water return pipe, a transparent pipe, a filter layer, a water dropper seat, a water seepage layer, a floating ball and a floating ball groove.
The connection and installation of each part of the invention are as follows: the upper part of the irregular side round or square box body is provided with a water inlet and a water return port, the water inlet is connected with the lower end of a water inlet pipe, the water return port is connected with the lower end of a water return pipe, the water inlet pipe and the water return pipe are made of semi-hard semi-flexible plastic pipes, the upper end of the water inlet pipe is connected with a water storage container, and the water return port at the upper end of the water return pipe is plugged by soft objects such as cotton or chemical fiber after leaving the; the box body is a hollow chamber, the lower part of the box body is provided with a transparent tube, the lower through hole of the box body is respectively provided with a screw male-female screw thread, the box body is connected with the box body in a closed way in a rotating way to form an integrated device, the upper part of the transparent tube is provided with a filter layer, the filter layer is made of water-permeable sponge, the filter layer is blocked at the upper opening of the transparent tube, the middle position of the upper part is provided with a movable floating ball in the box body, the movable floating ball in the box body is vertically corresponding to a horn mouth of a floating ball groove at the upper part, the periphery of the movable floating ball is fixed on the wall of the transparent tube by the elasticity of the sponge, the lower part of the movable floating ball is connected with the upper part of a dripper in a close leaning way, the dripper body is woven into a rope shape by water-permeable substances, the upper part is wrapped by a water-impermeable cloth belt, the dripper seat is placed in the transparent tube close to, the cone tip of the water dropper is hung in the space position below the middle of the transparent tube and in the middle of the transparent tube, the space of the cone tip at the lower part of the water dropper separating the transparent tube corresponds to the water seepage layer at the bottom of the transparent tube, the water seepage layer consists of double-layer gauze, the water seepage layer is fixedly embedded at the bottommost part of the transparent tube in a wrapping and binding mode or by using an elastic ring smaller than the diameter of the transparent tube, the floating ball is filled with gas lighter than air and provided with buoyancy, the floating ball groove is in a horn shape, the diameter is small at the upper part and large at the lower part, the floating ball is provided with a space capable of moving up and down in the floating ball groove, the materials are all made of.
The working principle is as follows: the working principle of the invention is that the infiltrating irrigation machine buried near the plant water-absorbing root hair uninterruptedly uses water for plant water seepage and drip irrigation, and the concrete implementation is as follows: when the inlet tube got into the box with water, water got into the dripper through the filtering layer, and the dripper can be with the water droplet form of water dripping, falls on in the space at hyaline tube middle part, and when the water droplet reached bottom water seepage layer, can be conducted to the soil of connection by the quick absorption of water seepage layer, and capillary structure in the soil when contacting the water that the water seepage layer was led, can be with this infiltration point quick to soil diffusion on every side and be the spheroid, the diffusion is the root must parcel confession vegetation water that plant absorbs water with spheroid soil.
Adjusting the irrigation water quantity: the water quantity of the water seepage drip irrigation device can be adjusted by rotationally detaching the transparent pipe, replacing the water dropper, setting the water dropper into various models of speed and speed, improving the water seepage substances of the water dropper according to different water requirements of plants, enabling the quantity of water drops dripping per minute of the water dropper to be changed differently, and then installing the newly replaced water dropper on the carriage body for quantitative water seepage drip irrigation; the quantity of the water drops dripping from the water dropper is adjusted to be changed, if the water drops quickly, the water seepage materials are smooth, if the water seepage materials are loosened, the quantity of the water drops permeating is increased, if the water drops slowly, the water seepage materials can be bound tightly, or the water seepage materials which are not smooth can be used, and the like.
When the water in the soil is saturated, the filtration irrigation water supply can be stopped: when rainwater falls, after water in underground soil is saturated, underground water can penetrate through a water seepage layer of the infiltrating irrigation device and then reaches the box body through a space position of the transparent pipe, the drippers and the filter layer, and as the water amount in the soil increases, a floating ball in the box body can float along a floating ball groove to block the water inlet pipe, so that the water in the water inlet pipe can not enter the box body any more, the floating ball floats, so that the pressure of the water in the water return pipe basically offsets most of the pressure of the water in the water inlet pipe, and the buoyancy when the water in the underground soil rises into the box body and the pressure of the water in the water return pipe are greater than the pressure of the water in the water inlet pipe, so that the floating ball floats, the water outlet of the water inlet pipe can be blocked, and the water supply of the water; when the underground soil is in water shortage, the water in the box body can enter the soil through the filter layer, the drippers and the water seepage layer, the floating ball in the box body can descend without the buoyancy of the water in the box body, the normal working procedure of the infiltrating irrigation device is started, namely, the water inlet pipe starts to supply water, the water enters the drippers through the filter layer, the drippers start to drip water into the transparent pipe regularly, and the water falling into the space of the transparent pipe quickly permeates the soil to supply water for plants after reaching the water seepage layer.
The infiltrating irrigation water point is in the soil, the phenomenon of ground water evaporation cannot occur, the infiltrating irrigation is performed according to the water requirement rule of the plants, after water permeates into the soil in the infiltrating layer, the water at the infiltrating point can diffuse around the infiltrating point as the center to gradually form a spheroid, a plurality of spheroids are uniformly distributed, most of water-absorbing root hairs of each plant can be wrapped in the spheroid, the water-absorbing environment of the water-absorbing root hairs of the plants in the soil cannot be damaged, infiltrating irrigation is performed according to the water absorption capacity of the plants, namely, the plants supplement much water with much water, and water waste cannot be caused, so that the infiltrating irrigation method is one of the most water-saving irrigation methods at present.
The invention is suitable for plants in plastic greenhouses, urban landscaping, fruit trees and the like, and is also suitable for plants with higher economic income in fields.
Drawings
Fig. 1 is a schematic three-dimensional view of a water-permeable drip irrigation emitter.
In the figure: 1. the water-seepage-prevention water-seepage-.
Detailed Description
In the schematic three-dimensional schematic diagram of the water-permeable drip irrigation emitter shown in fig. 1, the water-permeable drip irrigation emitter comprises a box body 1, a water inlet 2, a water return port 3, a water inlet pipe 4, a water return pipe 5, a transparent pipe 6, a box body 7, a filter layer 8, a dripper 9, a dripper seat 10, a water-permeable layer 11, a floating ball 12 and a floating ball groove 13.
The connection and installation of each part of the invention are as follows: the upper part of the irregular side round or square box body 1 is provided with a water inlet 2 and a water return port 3, the water inlet 2 is connected with the lower end of a water inlet pipe 4, the water return port 3 is connected with the lower end of a water return pipe 5, the water inlet pipe 4 and the water return pipe 5 are made of semi-hard semi-soft plastic pipes, the upper end of the water inlet pipe 4 is connected with a water storage container, and the water return port at the upper end is plugged by soft objects such as cotton or chemical fiber after the upper end of the water return pipe 5; the box body 7 is a hollow chamber, the lower part of the box body 1 is provided with a transparent tube 6 and lower through holes of the box body 1 which are respectively provided with screw male and female screw threads, the transparent tube 6 and the box body 1 are connected in a closed way in a rotating way to form an integrated device, the upper part of the transparent tube 6 is provided with a filter layer 8, the filter layer 8 is made of water-permeable sponge, the filter layer 8 is blocked at the upper opening of the transparent tube 6, the middle position of the upper part is provided with a movable floating ball 12 in the box body 7, the movable floating ball corresponds to the horn mouth of a floating ball groove 13 at the upper part up and down, the periphery is fixed on the inner wall of the transparent tube 6 by the elasticity of the sponge, the lower part is connected with the upper part of a dripper 9 in a close way, the dripper 9 is woven into a rope shape by water-permeable substances, the upper part is wrapped by a non-permeable cloth belt, the dripper seat 10 in the transparent tube 6 is placed close to, the lower end of the transparent tube 6 is reduced inwards to form a dripper seat 10, the lower part of the dripper 9 is conical, the conical tip part of the dripper is suspended below the dripper seat 10 in the middle of the transparent tube 6 and in the space position in the middle of the transparent tube 6, the conical tip part of the lower part of the dripper 9 separates the space of the transparent tube 6 and corresponds to a water seepage layer 11 at the bottom of the transparent tube 6, the water seepage layer 11 consists of double-layer gauze, the water seepage layer 11 is fixedly embedded at the bottommost part of the transparent tube 6 in a wrapping and binding mode or by an elastic circular ring smaller than the diameter of the transparent tube 6, a gas with buoyancy and lighter than air is filled in the floating ball 12, the floating ball groove 13 is in a horn shape, the diameter is small at the top and the bottom is large, the floating ball 12 has a space capable of moving up and down.
The working principle of the invention is that the infiltrating irrigation machine buried near the plant water-absorbing root hair uninterruptedly uses water for plant water seepage and drip irrigation, and the concrete implementation is as follows: when inlet tube 4 got into 7 in the box with water, water got into water dropper 9 through filtering layer 8, water dropper 9 can be with the water droplet form of dripping, fall on in the space at transparent pipe 6 middle part, when the water droplet reached bottom water seepage layer 11, can be conducted to the soil of connection by the quick absorption of water seepage layer 11, when capillary structure in the soil contacted the water that water seepage layer 11 was come, can be with this water seepage point to be the spheroid fast to soil diffusion on every side, the diffusion is the root hair parcel that the spheroid soil can absorb water with the plant and lives the confession vegetation water.
Adjusting the irrigation water quantity: the water quantity of the water seepage drip irrigation device can be adjusted by rotationally detaching the transparent pipe 6, then replacing the water dropper 9, setting the water dropper 9 into various models with different speeds, improving the water seepage substances of the water dropper 9 according to different water requirements of plants, enabling the quantity of water drops dripping per minute of the water dropper 9 to have different changes, and then installing the newly replaced water dropper 9 on the carriage body 1 for quantitative water seepage drip irrigation; the quantity of the water drops of the dripper 9 is adjusted to change, if the water drops quickly, the water permeating materials are smooth, the quantity of the water permeating water drops is increased if the water permeating materials are loose, and if the water drops slowly, the water permeating materials can be tightly bound or the water permeating materials which are not smooth are used.
When the water in the soil is saturated, the filtration irrigation water supply can be stopped: when rainwater falls, after water in underground soil is saturated, underground water can penetrate through a water seepage layer 11 of the infiltrating irrigation device and then reaches a box body 7 through a space position of a transparent pipe 6, a dripper 9 and a filter layer 8, a floating ball 12 of the box body 7 can float along a floating ball groove 13 to block a water inlet pipe 4 along with the increase of water amount in the soil, so that the water in the water inlet pipe 4 can not enter the box body 7 any more, and the floating ball 12 floats, so that the pressure of the water in the water inlet pipe 4 is basically counteracted by most of the pressure of the water in the water inlet pipe 4, and the buoyancy when the water in the underground soil rises to the box body 7 and the pressure of the water in the water return pipe 5 are greater than the pressure of the water in the water inlet pipe 4, so that the floating ball 12 floats to block a water outlet of the water inlet pipe 4, and the water supply of the water inlet; when the soil is lack of water, the water in the box body 7 enters the soil through the filter layer 8, the drippers 9 and the water seepage layer 11, the floating ball 12 in the box body 7 can descend without the buoyancy of the water in the box body 7, the normal working procedure of the infiltrating irrigation machine is started, namely, the water inlet pipe 4 starts to supply water, the water enters the drippers 9 through the filter layer 8, the drippers 9 start to drip into the transparent pipe 6 according to the rule, and the water falling into the space of the transparent pipe 6 quickly permeates the soil to supply water for plants after reaching the water seepage layer 11.
Claims (4)
1. Infiltration drip irrigation emitter, its characterized in that: comprises a box body, a water inlet, a water return port, a water inlet pipe, a water return pipe, a transparent pipe, a filter layer, a water dropper seat, a water seepage layer, a floating ball and a floating ball groove; the upper part of the irregular side round or square box body is provided with a water inlet and a water return port, the water inlet is connected with the lower end of a water inlet pipe, the water return port is connected with the lower end of a water return pipe, the water inlet pipe and the water return pipe are made of semi-hard semi-flexible plastic pipes, the upper end of the water inlet pipe is connected with a water storage container, and a pipe orifice at the upper end of the water return pipe is plugged by soft objects such as cotton or chemical fiber after leaving the; the box body is a hollow chamber, the lower part of the box body is provided with a transparent tube, the through holes of the lower part of the box body are respectively provided with a screw male-female type screw thread, the box body is connected with the box body in a closed way in a rotating way to form an integrated device, the upper part of the transparent tube is provided with a filter layer, the filter layer is made of water-permeable sponge, the filter layer is blocked at the upper opening of the transparent tube, the middle position of the upper part is provided with a movable floating ball in the box body, the movable floating ball is vertically corresponding to a horn mouth of a floating ball groove at the upper part, the periphery of the movable floating ball is fixed on the wall of the transparent tube by the elasticity of the sponge, the lower part of the movable floating ball is connected with the upper part of a dripper in a close leaning way, the dripper is woven into a rope shape by water-permeable materials, the upper part is wrapped by a water-impermeable cloth belt and is placed on a dripper seat in, the cone tip of the drip irrigation emitter is hung below the middle drip seat of the transparent pipe and in the space position in the middle of the transparent pipe, the cone tip at the lower part of the drip irrigation emitter separates the space of the transparent pipe and corresponds to the water seepage layer at the bottom of the transparent pipe, the water seepage layer consists of double-layer gauze, the water seepage layer is fixedly embedded at the bottommost part of the transparent pipe in a wrapping and binding mode or by an elastic ring smaller than the diameter of the transparent pipe, gas lighter than air and provided with buoyancy is filled in a floating ball, a float ball groove is in a horn shape and is positioned at the lower end of a water inlet, the diameter is small at the upper part and large at the lower part, the floating ball is provided with a space capable of moving up and down in the float ball groove, the.
2. The water permeable drip irrigation emitter according to claim 1, characterized in that: the water seepage drip irrigation emitter buried near the plant water absorption root hairs continuously uses water for plant water seepage drip irrigation, and the specific implementation is as follows: when the inlet tube got into the box with water, water got into the dripper through the filtering layer, and the dripper can be with the water droplet form of water dripping, falls on in the space at hyaline tube middle part, and when the water droplet reached bottom water seepage layer, can be conducted to the soil of connection by the quick absorption of water seepage layer, and capillary structure in the soil when contacting the water that the water seepage layer was led, can be with this infiltration point quick to soil diffusion on every side and be the spheroid, the diffusion is the root must parcel confession vegetation water that plant absorbs water with spheroid soil.
3. The water-permeable drip irrigation emitter according to claim 1 or 2, characterized in that: the transparent pipe is detached in a rotating mode, the drippers are replaced, the drippers are set to be of multiple models, water seepage substances of the drippers are improved according to different water requirements of plants, the number of water drops dripped by the drippers per minute is changed differently, and then the replaced drippers are installed on a box body to carry out quantitative water seepage and drip irrigation; the quantity of the water drops dripping from the water dropper is adjusted to be changed, if the water drops quickly, the water seepage materials are smooth, if the water seepage materials are loosened, the quantity of the water drops permeating is increased, if the water drops slowly, the water seepage materials can be bound tightly, or the water seepage materials which are not smooth can be used, and the like.
4. The water-permeable drip irrigation emitter according to claim 1 or 2, characterized in that: when rainwater falls, after water in underground soil is saturated, underground water can penetrate through a water seepage layer of the water seepage drip irrigation emitter and then reaches the box body through a space position of the transparent pipe, the dripper and the filter layer, and as the water amount in the soil increases, a floating ball in the box body can float along a floating ball groove to block a water inlet so that the water in the water inlet pipe can not enter the box body any more; when the underground soil is in water shortage, the water in the box body can enter the soil through the filter layer, the drippers and the water seepage layer, the floating ball in the box body can descend without the buoyancy of the water in the box body, the normal working procedure of the water seepage drip irrigation emitter is started, namely, the water inlet pipe starts to supply water, the water enters the drippers through the filter layer, the drippers start to drip water into the transparent pipe regularly, and the water falling into the space of the transparent pipe quickly permeates the soil to supply water for plants after reaching the water seepage layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410603178.5A CN105613213B (en) | 2014-11-03 | 2014-11-03 | Water seepage drip irrigation emitter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410603178.5A CN105613213B (en) | 2014-11-03 | 2014-11-03 | Water seepage drip irrigation emitter |
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| CN105613213A CN105613213A (en) | 2016-06-01 |
| CN105613213B true CN105613213B (en) | 2020-10-20 |
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| CN201410603178.5A Expired - Fee Related CN105613213B (en) | 2014-11-03 | 2014-11-03 | Water seepage drip irrigation emitter |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107258483B (en) * | 2017-08-08 | 2020-03-31 | 尹菽斌 | Multi-functional irrigation is with dripping oozing pipe |
| CN108323297A (en) * | 2018-04-03 | 2018-07-27 | 山东农业大学 | Novel intelligent water fat gas integration orchard irrigation system |
| CN108934935A (en) * | 2018-05-29 | 2018-12-07 | 安徽国川环境技术有限公司 | A kind of agricultural irrigation drip irrigation appliance |
| CN108990767A (en) * | 2018-08-21 | 2018-12-14 | 榕江县富榕生态农业有限责任公司 | A kind of sugar tangerine plantation built-in type watering device |
| CN110476784A (en) * | 2019-09-03 | 2019-11-22 | 广州大学 | A kind of anticlogging drip irrigation pipe |
| CN113940259A (en) * | 2021-09-09 | 2022-01-18 | 姬翠娥 | Plastic fiber infiltrating irrigation pipe |
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| CN103609394A (en) * | 2013-12-03 | 2014-03-05 | 三北沙漠（北京）科技有限责任公司 | Water infiltrating body for infiltrating irrigation and infiltrating device |
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| CN1320365A (en) * | 2001-05-09 | 2001-11-07 | 黄敏彦 | Siphon irrigator for cultivating underground root |
| CN2575974Y (en) * | 2002-11-07 | 2003-10-01 | 王强 | Soil water-supply-quantity automatic regulator |
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| RU2280356C2 (en) * | 2004-09-20 | 2006-07-27 | Государственное учреждение культуры "Волгоградский музейно-выставочный центр" (ГУК "ВМВЦ") | Dripper |
| RU2282344C1 (en) * | 2005-03-17 | 2006-08-27 | Государственное научное учреждение Поволжский научно-исследовательский институт эколого-мелиоративных технологий Российской академии сельскохозяйственных наук | Drop-type water outlet |
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| CN203297809U (en) * | 2013-06-18 | 2013-11-20 | 内蒙古大禹节水技术有限公司 | Suck-back prevention pipe joint bypass pipe of drip irrigation system |
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| CN105613213A (en) | 2016-06-01 |
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