CN101243763B - Water-saving block-resistant accurate filtration irrigation device and connector - Google Patents
Water-saving block-resistant accurate filtration irrigation device and connector Download PDFInfo
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- CN101243763B CN101243763B CN2008100345266A CN200810034526A CN101243763B CN 101243763 B CN101243763 B CN 101243763B CN 2008100345266 A CN2008100345266 A CN 2008100345266A CN 200810034526 A CN200810034526 A CN 200810034526A CN 101243763 B CN101243763 B CN 101243763B
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Abstract
The invention relates to a water saving anti-blocking precise irrigation device and the connecting piece of the irrigation device, belonging to the technical field of agriculture, comprising a plurality of delivery pipe branches, an above-ground connecting pipe fitting, a connecting piece of the pipe fitting and a capillary, an above-ground to underground capillary, an under ground connecting pipe fitting and a porous seeping head. The invention is characterized in that, the adjacent two pipe branches are connected with each other through the above-ground connecting pipe fitting to form the enclosed delivery pipe branch path; one end of the connecting piece of the pipe fitting and the capillary is seal-jointed with the above-ground connecting pipe fitting, and the other end is connected with the above-ground to underground capillary; the under ground connecting pipe fitting has spherical structure; the terminal of the under ground connecting pipe is connected with the above-ground to underground capillary; the various pipe branches of the under ground connecting pipe fitting are connected with the porous seeping head. The irrigation device and the connecting piece have the advantages that, the spacing and the position of the seeping head can be adjusted randomly according to crop distance and root distribution; precise irrigation is performed to the root section of plants; the anti-blocking structural design and the arrangement of a filtering device can effectively prevent the blocking of penetrant holes, and long term irrigation is realized.
Description
Technical field
What the present invention relates to is a kind of irrigation rig of agricultural technology field, especially a kind of water-saving block-resistant accurate filtration irrigation device and connector thereof.
Background technology
Water resources problems is paid attention to by many countries and regions always, and problem of water saving is the focus of domestic and international agricultural research always.In China, the agricultural water amount accounts for about 70% of national economy total water amount, and along with China's rapid economy development, city and water for industrial use increase day by day, the agricultural water volume that can be utilized constantly reduces, especially a lot of local landform arids in northern China and the Northwest, serious arid is restricting the economic development of this area and the raising of people's living standard.Raising gradually along with people's living standard and quality of life, the demand of agricultural product and agricultural water amount also can increase day by day, therefore research and analyse the availability that improves water and water-saving technology for realizing national sustained economic development, ensure that China's grain security and water security have very important significance.It also is the important content of building a New Socialist Countryside.
Water-saving irrigation technique is the achievement in research with obvious characteristic that China obtains in recent years.Water-saving irrigation technique mainly contains pipe filling, sprinkling irrigation, slight irrigation etc.Wherein sprinkling irrigation and slight irrigation have become the main flow of development of water saving irrigation, and have been rapidly developed.Along with the continuous development of sprinkler irrigation technique and slight irrigation water-saving irrigation technique, water utilization rate is greatly improved, has driven agricultural and has been changed to accurate type by extensive style gradually, has realized the high-yield high-quality production of agricultural products.This technology has obtained extensive application in the many places of China at present.Infiltrating irrigation is a kind of underground slight irrigation mode, is with low pressure water conveyance pipeline, again by being embedded in the micropore infiltrating irrigation pipe of crop root mobile layer, according to the growth water requirement of crop at regular time and quantity in soil infiltration supply with crop.The advantage of infiltration irrigation technology is: using water wisely, reduce fertilizer amount; Reduce humidity in the canopy, reduce vegetable disease; Improve soil environment, quicken crop and grow up; Economic benefit and yield increase effect are remarkable.Infiltration irrigation technology has had large-area applying in agriculture developed countries such as the U.S., Israel, Japan, Italy, experiment, demonstration have also been carried out on China Hebei, Beijing, Tianjin, Shandong, Xinjiang, Inner Mongol and other places, and obtained income preferably, and more and more receive everybody attention and concern.But also there are some problems in existing filtration irrigation method in the process of using, as the inequality of pouring water, oozes problems such as hole plug and service life is low.Infiltrating irrigation is a most rising a kind of high-efficiency water-saving irrigation technique, in China, should grasp the key technology of infiltrating irrigation, solves the obstruction and the unequal problem of water outlet that occur in the existing irrigation process, is Rural Economic Development and plays a greater role.
Find through literature search prior art, in Chinese patent CN1404717A " accurate filtration irrigation device of a kind of assembled and wherein employed connector ", provide a kind of and need not bury underground water permeating pipeline realization infiltrating irrigation underground, can regulate the spacing of oozing head arbitrarily according to the planting distance of crop-planting.But when connecting tube and delivery pipe branch interface generation obstruction, block part is easy-to-search not, though the anti-blocking structure of taper has certain choke preventing function, can not prevent the generation of stopping up fully.
Summary of the invention
The object of the invention is at the deficiencies in the prior art, a kind of water-saving block-resistant accurate filtration irrigation device and connector thereof are provided, make its solved block part in use not easy-to-search, easily stop up, the technical barrier of water outlet inequality, it is a kind of anti-blocking, water permeating pipeline that all even block part of water outlet can be looked into, and can arrange the number and the position of oozing head according to planting distance and plant root size reasonable, the accurate irrigation rig of assembled that realization is accurately seeped water and irrigated crop, to solve the infiltrating irrigation pipe in the infiltrating irrigation process, the infiltrating irrigation hole is blocked, the unequal problem of water outlet.
The present invention is achieved by the following technical solutions:
A kind of water-saving block-resistant accurate filtration irrigation device involved in the present invention comprises: delivery pipe branch, overground pipe fitting, pipe fitting and hollow billet connector, ground become underground hollow billet, underground connecting tube and porous and ooze head.Two adjacent described delivery pipe branches connect and compose airtight delivery pipe branch road by described overground pipe fitting, and described pipe fitting and hollow billet connector one end and described overground pipe fitting are tightly connected, and its other end becomes underground hollow billet with described ground and is connected.Described ground becomes underground hollow billet one end and described pipe fitting and hollow billet connector and is tightly connected, and its other end is connected with underground connecting tube.Two above branch mouths of pipe of distribution on the described underground connecting tube, its root becomes underground hollow billet with described ground and is connected, and each branch's mouth of pipe can connect described porous and ooze head.Described porous is oozed head, is embedded near the soil of root system, and soil is given in infiltration by being connected with underground connecting tube.
Described delivery pipe branch comprises some arm pipeline sections.
Described overground pipe fitting is tee pipe fitting or reducer tee pipe fitting.
Described overground pipe fitting is the reducer tee pipe fitting preferably, wherein the diameter of the mouth of pipe is thicker than the diameter of another mouth of pipe, two are propped up the mouth of pipe than rough segmentation and are connected with described delivery pipe branch, the 3rd is segmented a mouth of pipe and is connected with the hollow billet connector with described pipe fitting, and the distance dependent in the diameter of the 3rd branch's mouth of pipe and the dried up source of described overground pipe fitting, general dried up source is near more, and the diameter of the 3rd branch's mouth of pipe of described overground pipe fitting can be more little.
Described ground becomes underground hollow billet and forms into fluid-tight flexible pipe.
The connector that water-saving block-resistant accurate filtration irrigation device involved in the present invention is used, be meant pipe fitting and hollow billet connector, comprise transparent plastic tubular configured joint and anti-stifled connecting tube two parts composition, one end of described transparent plastic tubular configured joint and described overground pipe fitting are tightly connected, its other end and described anti-stifled connecting tube are tightly connected, described anti-stifled connecting tube one end is connected with described transparent plastic tubular configured joint, and its other end becomes underground hollow billet with described ground and is connected.
Described anti-stifled connecting tube is a simple and easy filter preferably in the port that is connected with described transparent plastic tubular configured joint.
The pipeline of described anti-stifled connecting tube is the anti-bridging structure of cone of flaring, and is less near the pipeline caliber at described transparent plastic tubular configured joint place, and the caliber that close described ground becomes underground hollow billet one side is bigger.
Described underground connecting tube is spherical structure preferably, a plurality of branches mouth of pipe evenly distributes on the spherical structure, the number of branch's mouth of pipe and caliber size are decided according to plant and the Root Distribution of infiltrating irrigation crop, do not connect porous ooze the head branch's mouth of pipe can the mouth of pipe be blocked with stopper.
Described porous ooze the head form by the porous material that oozes a shell and in this housing, fill, a described end that oozes a shell is connected with branch's mouth of pipe of described underground connector by tubular configured joint, its other end is uncovered, and the described porous material of filling in the housing exposes its termination in this opening end.
The present invention is connected by bypass described delivery pipe branch in use with the water delivery person in charge, the water delivery person in charge links to each other with running water pipe or cistern, and filter is housed.This delivery pipe branch is laid on the furrow face between crop row, described ground becomes underground hollow billet one end and links to each other with described delivery pipe branch with the hollow billet connector by described pipe fitting, the other end is connected with described underground connecting tube, more described porous is oozed head and is connected with branch's mouth of pipe of described underground connecting tube by pipe joint.The length of embedment that porous is oozed head decide according to practical application, the determining of length of embedment should consider the kind of crop and different growth stage thereof moisture requirement, use the tilth of machinery, the permeable and water guide conditions such as the soil texture of considering to irrigate the plot again.Irrigation water enters into by the ground delivery pipe branch and on the ground becomes underground hollow billet, then, oozes the soil that oozes out the head around moisture and the moistening crop root from porous, thereby realizes the accurate irrigation operation to crop.
Filtration irrigation device provided by the invention and connector thereof are unlike filtration irrigation device of the prior art, and the position that becomes underground hollow billet when the ground determines that the position of infiltration is also determined thereupon.Filtration irrigation device provided by the invention not only can directly supply water to crop root, number and the position that can also determine to ooze head according to the difference of the difference of crop species, different vegetative stage water requirements and root system size and location, thus realize accurately irrigating and the purpose of water saving.
The design of the plastic, transparent pipeline section of pipe fitting provided by the invention and hollow billet connector can make things convenient for the user irregularly to observe current situation in the plastic, transparent pipe fitting, to check the stopping state of filtration irrigation device, when generation obstruction or plastic, transparent pipeline section in the filter screen fog because of long-term use, this plastics pipeline section can be disassembled cleaning, also can remove the impurity in the anti-stifled connector filter screen simultaneously.
The cone structure design of the anti-stifled connector of pipe fitting provided by the invention and hollow billet connector and the layout of filter can be prevented effectively that impurity enters into porous in the sealing and oozed head, thereby stop up porous and ooze the head infiltration, even impurity stops up the mesh of filter, stop up by in time finding, and can take measures to remove stopping up impurity to irregularly checking of transparent plastic pipeline section.
Why the present invention can accomplish accurately is located near the root of crop position with oozing head, mainly be to rely on described underground connecting tube, it is designed to sphere, a plurality of branches mouth of pipe evenly distributes on the spherical structure, the porous that can connect suitable quantity is as required oozed head, for general quality medium soil, can connect two on underground connector and ooze head, clayey soil can connect three or more than ooze head, sand then can connect one and ooze head.The spherical hollow space of underground connector can be to realizing that from the water that becomes in the underground hollow billet buffering also can precipitate the minute impurities in the water, provides even, high-quality water source thereby ooze head for porous on the ground.
Water-saving block-resistant accurate filtration irrigation device provided by the invention becomes underground hollow billet, underground spherical connector by pipe fitting and the hollow billet connector of design, flexible ground and is connected the water adding system structure that porous is oozed, can prevent effectively that impurity from stopping up the infiltration hole, realize the efficient accurately purpose of infiltrating irrigation; The underground connecting tube that flexible ground becomes underground hollow billet and spherical manifold can make this device that porous is oozed near the root of burying every crop underground the suitable soil, and porous ooze the head can arrange according to the distribution situation of crop root, really accomplish to supply with moisture by plant growth, solved the fixing shortcoming of apopore spacing in the domestic and international infiltrating irrigation equipment, realized and to have regulated the distance and the direction of oozing head arbitrarily according to the spacing in the rows of crop-planting and the distribution of root system, realized the purpose that the plant root is accurately irrigated.The cone structure design in pipe fitting and the hollow billet connector and the layout of filter have overcome the shortcoming that existing filtration irrigation device stops up easily, realized the purpose of water delivery steady in a long-term, and the design of transparent plastic pipeline section can make things convenient for the user regularly to check the infiltration situation of filtration irrigation device, and for the impurity of removing filter provides possibility in good time, thereby guarantee the permanently effective operation of filtration irrigation device.
Therefore, the present invention has the following advantages: the multiple anti-blocking structural design of the anti-stifled connector of (1) this system's pipe fitting and hollow billet connector can prevent effectively that impurity enters porous in the irrigation water and ooze head, and infiltrating irrigation water impurity stops up a difficult problem of oozing the hole in the filtration irrigation device thereby solved in the past.(2) operation conditions that the layout of transparent plastic pipeline section joint can make things convenient for the user regularly to check filtration irrigation device in this system's pipe fitting and the hollow billet connector, the layout of simultaneously detachable plastics pipeline section also makes things convenient for the removing of filtering device filter screen impurity.(3) this system's porous flexible arrangement of oozing head can be plant root accurate and reliable water source is provided, thereby realizes the purpose of accurately pouring water and economizing on water.
Description of drawings
Fig. 1 is the structural representation of accurate filtration irrigation device provided by the invention;
Fig. 2 is the structural representation of the overground part of each arm pipeline section of employed connection among the present invention;
Fig. 3 is the structural representation of employed pipe fitting among the present invention and hollow billet connector;
Fig. 4 is the structural representation of employed underground connector among the present invention;
Fig. 5 oozes the structural representation of head for employed porous among the present invention.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated: present embodiment is being to implement under the prerequisite with the technical solution of the present invention, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1, the structural representation for accurate filtration irrigation device provided by the invention comprises: delivery pipe branch 1, overground pipe fitting, pipe fitting and hollow billet connector 3, on the ground become underground hollow billet 4, underground connecting tube 5 and porous and ooze 6.Two adjacent described delivery pipe branches 1 connect and compose airtight described delivery pipe branch road by described overground pipe fitting, described pipe fitting and hollow billet connector 3 one ends and described overground pipe fitting are tightly connected, and its other end becomes underground hollow billet 4 with described ground and is connected.Described ground becomes underground hollow billet 4 one ends and described pipe fitting and hollow billet connector 3 and is tightly connected, and its other end is connected with underground connecting tube 5.Two the above branch mouths of pipe that evenly distribute on the described underground connecting tube 5, its root becomes underground hollow billet 4 with described ground and is connected, and each branch's mouth of pipe can connect described porous and ooze 6.Described porous oozes 6, is embedded near the soil the root system, and soil is given in infiltration by being connected with underground connecting tube 5.
As shown in Figure 2, be the structural representation of overground part provided by the invention, described overground pipe fitting is tee pipe fitting or reducer tee pipe fitting 2.Present embodiment is a reducer tee pipe fitting 2, wherein some delivery pipe branches 1 two by reducer tee pipe fitting 2 are tightly connected into airtight hydraulic pipeline than extra heavy pipe mouth 21 and 22 relatively, reducer tee pipe fitting 2 becomes underground hollow billet 4 with hollow billet connector 3 with the ground by pipe fitting and is connected, wherein: the mouth of pipe 21 is connected with delivery pipe branch stage casing 11 with 22, and the mouth of pipe 23 is connected with 311 ports of hollow billet connector 3 with pipe fitting.Wherein the mouth of pipe 21 and 22 caliber are greater than the mouth of pipe 23.
As shown in Figure 3, be the structural representation of pipe fitting provided by the invention and hollow billet connector, it comprises transparent plastic pipeline section joint 31 and anti-stifled connector 32.The mouth of pipe 311 of transparent plastic pipeline section joint 31 is tightly connected with the mouth of pipe 23 of overground part 2, and its another mouth of pipe 312 is connected with 321 mouths of pipe of anti-stifled connector 32.The mouth of pipe 321 of anti-stifled connector 32 is connected with the mouth of pipe 312 of transparent plastic pipeline section joint 31, its another mouth of pipe 323 becomes underground hollow billet with the ground and is connected, anti-stifled connector 32 is the cone structure of flaring, its caliber end 321 near transparent plastic pipeline section joint is less, it is bigger closely to go up caliber end 323 calibers that become underground hollow billet, 322 of anti-stifled connector 32 is a fine mesh screen, is used for filtering tiny impurity, prevents to enter to ooze head and stop up and ooze the hole.Transparent plastic pipeline section joint 31 is to make things convenient for the user irregularly to watch current and stopping state in the pipe fitting, in case find to stop up, then can with its dismounting and remove the mouth of pipe 321 of anti-stifled connector 32 and filter screen 322 between the impurity piled up.
Become underground hollow billet 4 on the ground, its rubber plastic pipe by certain intensity is made, and the one end is connected with 323 ports of hollow billet connector 3 with pipe fitting, and the other end is connected with 51 ports of underground connector 5.
As shown in Figure 4, structural representation for underground connector provided by the invention, it is designed to spherical structure, a plurality of branches mouth of pipe 52 is arranged on the underground connector 5, the number of the mouth of pipe and caliber are decided according to plant planting distance and Root Distribution, spherical structure design decapacitation provides outside a plurality of branches mouth of pipe simultaneously, and spherical structure can also have certain at the uniform velocity effect to the water source that the flow direction is oozed head.The port 51 of underground connector 5 becomes underground hollow billet 4 with the ground and is tightly connected.
As shown in Figure 5, ooze the structure of head for porous, porous ooze 6 by plastic casing 61 and in fill out porous material 62 and form, tubular configured joint 611 on the plastic casing is connected with branch's mouth of pipe 52 of underground connector 5, filling porous material 62 in the cavity of plastic casing 61, porous material can be sponge, foamed plastics etc.
During concrete the use, described delivery pipe branch 1 is connected with the water delivery person in charge by bypass, the water delivery person in charge links to each other with running water pipe or cistern, and filter is housed.This delivery pipe branch 1 is laid on the furrow face between crop row, described ground becomes underground hollow billet 4 one ends and links to each other with described delivery pipe branch 1 with hollow billet connector 3 by described pipe fitting, the other end is connected with described underground connecting tube, more described porous is oozed 6 and is connected with branch's mouth of pipe of described underground connecting tube 5 by pipe joint.Porous is oozed a length of embedment of 6 and is decided according to practical application, the determining of length of embedment should consider the kind of crop and different growth stage thereof moisture requirement, use the tilth of machinery, consider again to irrigate the soil texture etc. in plot permeable with the water guide condition.Irrigation water enters into by ground delivery pipe branch 1 and on the ground becomes underground hollow billet 4, then, oozes the soil that oozes out 6 around moisture and the moistening crop root from porous, thereby realizes the accurate irrigation operation to crop.
The present invention can regulate the spacing and the position of oozing head arbitrarily according to crop planting distance and Root Distribution, and the plant root is accurately irrigated, and further, the layout of anti-blocking structural design of the present invention and filter can effectively prevent to ooze hole plug, realizes irrigating for a long time.
Claims (7)
1. water-saving block-resistant accurate irrigation rig, comprise that delivery pipe branch, overground pipe fitting, pipe fitting and hollow billet connector, ground become underground hollow billet, underground connecting tube and porous and ooze head, it is characterized in that: also comprise: two adjacent described delivery pipe branches connect and compose airtight delivery pipe branch road by described overground pipe fitting, described pipe fitting and hollow billet connector one end and described overground pipe fitting are tightly connected, and its other end becomes underground hollow billet with described ground and is connected; Described ground becomes underground hollow billet one end and described pipe fitting and hollow billet connector and is tightly connected, and its other end is connected with underground connecting tube; Two above branch mouths of pipe of distribution on the described underground connecting tube, its root becomes underground hollow billet with described ground and is connected, and each branch's mouth of pipe all connects described porous and oozes head;
Described overground pipe fitting is the reducer tee pipe fitting, the first branch's mouth of pipe of this reducer tee pipe fitting and the diameter of second branch's mouth of pipe are thicker than the diameter of the 3rd branch's mouth of pipe, first branch's mouth of pipe is connected with described delivery pipe branch respectively with second branch's mouth of pipe, and the 3rd branch's mouth of pipe is connected with the hollow billet connector with described pipe fitting;
Described pipe fitting and hollow billet connector comprise: transparent plastic tubular configured joint and anti-stifled connecting tube two parts, one end of described transparent plastic tubular configured joint and described overground pipe fitting are tightly connected, its other end and described anti-stifled connecting tube are tightly connected, described anti-stifled connecting tube one end is connected with described transparent plastic tubular configured joint, and its other end becomes underground hollow billet with described ground and is connected.
2. water-saving block-resistant accurate irrigation rig according to claim 1, it is characterized in that: described delivery pipe branch comprises some arm pipeline sections, described delivery pipe branch is responsible for water delivery by bypass and is connected, and the water delivery person in charge links to each other with running water pipe or cistern, and filter is housed.
3. water-saving block-resistant accurate irrigation rig according to claim 1, it is characterized in that: the distance dependent in the diameter of described the 3rd branch's mouth of pipe and the dried up source of described overground pipe fitting, near more apart from the water source, the diameter of the 3rd branch's mouth of pipe of described overground pipe fitting is more little.
4. water-saving block-resistant accurate irrigation rig according to claim 1, it is characterized in that: described porous is oozed head, by plastic casing and in fill out porous material and form, the tubular configured joint on the plastic casing is connected with branch's mouth of pipe of underground connecting tube, filling porous material in the cavity of plastic casing.
5. according to claim 1 or 4 described water-saving block-resistant accurate irrigation rigs, it is characterized in that: described underground connecting tube is a spherical structure, and a plurality of branches mouth of pipe evenly distributes on the spherical structure.
6. water-saving block-resistant accurate irrigation rig according to claim 1, it is characterized in that: the pipeline of described anti-stifled connecting tube is the anti-bridging structure of cone of flaring, pipeline caliber near described transparent plastic tubular configured joint place is less, and the caliber that close described ground becomes underground hollow billet one side is bigger.
7. water-saving block-resistant accurate irrigation rig according to claim 1 is characterized in that: described anti-stifled connecting tube is a simple and easy filter in the port that is connected with described transparent plastic tubular configured joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100345266A CN101243763B (en) | 2008-03-13 | 2008-03-13 | Water-saving block-resistant accurate filtration irrigation device and connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100345266A CN101243763B (en) | 2008-03-13 | 2008-03-13 | Water-saving block-resistant accurate filtration irrigation device and connector |
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| Publication Number | Publication Date |
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| CN101243763A CN101243763A (en) | 2008-08-20 |
| CN101243763B true CN101243763B (en) | 2010-07-21 |
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| CN2008100345266A Expired - Fee Related CN101243763B (en) | 2008-03-13 | 2008-03-13 | Water-saving block-resistant accurate filtration irrigation device and connector |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102771358A (en) * | 2012-07-14 | 2012-11-14 | 成都生辉电子科技有限公司 | Automatic irrigation control system based on PLC (Programmable Logic Controller) |
| CN103583324B (en) * | 2013-11-12 | 2016-08-17 | 福建大地生态科技实业有限公司 | Root filling device |
| CN105297805A (en) * | 2015-11-30 | 2016-02-03 | 湖南金松汽车有限公司 | Sludge suction system of sewage suction truck |
| CN113197058B (en) * | 2021-05-11 | 2023-05-12 | 中粮屯河新源糖业有限公司 | Agricultural water saving system |
| CN113483180A (en) * | 2021-06-03 | 2021-10-08 | 海洋石油工程股份有限公司 | Quick connecting structure for multiple submarine pipelines of underwater equal-diameter drift ball |
| CN114982600B (en) * | 2022-06-21 | 2024-04-26 | 吉安井冈农业生物科技有限公司 | Water-saving irrigation device for agricultural planting and use method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2446769Y (en) * | 2000-10-16 | 2001-09-12 | 赵必庆 | Infiltrating irrigation system |
| CN1404717A (en) * | 2002-11-11 | 2003-03-26 | 刘明池 | Equipping-type precision seep-irrigation apparatus and connector used therein |
| CN2715515Y (en) * | 2004-08-31 | 2005-08-10 | 罗在友 | Inducing underground douche for plant irrigation |
-
2008
- 2008-03-13 CN CN2008100345266A patent/CN101243763B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2446769Y (en) * | 2000-10-16 | 2001-09-12 | 赵必庆 | Infiltrating irrigation system |
| CN1404717A (en) * | 2002-11-11 | 2003-03-26 | 刘明池 | Equipping-type precision seep-irrigation apparatus and connector used therein |
| CN2715515Y (en) * | 2004-08-31 | 2005-08-10 | 罗在友 | Inducing underground douche for plant irrigation |
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| CN101243763A (en) | 2008-08-20 |
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Granted publication date: 20100721 Termination date: 20130313 |