CN103861752B - Based on the anti-stifled douche of venturi principle - Google Patents
Based on the anti-stifled douche of venturi principle Download PDFInfo
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- CN103861752B CN103861752B CN201410075278.5A CN201410075278A CN103861752B CN 103861752 B CN103861752 B CN 103861752B CN 201410075278 A CN201410075278 A CN 201410075278A CN 103861752 B CN103861752 B CN 103861752B
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- stifled
- venturi principle
- douche
- diffuser
- flow passage
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- 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
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- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Environmental Sciences (AREA)
- Nozzles (AREA)
Abstract
The invention discloses a kind of anti-stifled douche based on venturi principle, comprise grid type water inlet, block up labyrinth flow-path and delivery port based on the anti-of venturi principle.Present invention improves over labyrinth flow-path structure, be applied to by venturi principle in runner design, each flow passage unit comprises contraction section, throat, diffuser and the Drainage Section from throat to diffuser.The present invention utilizes the triangle block of interpolation, the region of formation whirlpool energy dissipating is made not only to comprise runner corner, also comprise near block, and the turnover of Venturi tube, convergent and gradually draw together and form local head loss, improve runner energy dissipating ability, utilize the fair speed that Drainage Section is formed simultaneously, the lower easily stifled diffusion turn section of speed of rinsing, make the latter be not easy to produce blocking, reach the object of douche energy dissipating and anti-clogging.
Description
Technical field
The invention belongs to irrigation field, particularly a kind of for the anti-stifled douche based on venturi principle in agricultural water-saving irrigation.
Background technology
Douche is the core component of drip irrigation project, and the effect of whole drip irrigation project is all embodied by the state of pouring water of douche, and the quality of its hydraulic performance and anti-clogging greatly determines the quality of integrated engineering benefit.The Main Function of douche is energy dissipating, and the press water (also can be mixed with fertilizer) transported by aqueduct to be transported near crop root in soil with less uniform flow lentamente.For reaching effect of energy dissipation, current douche runner is mostly bending and elongated by force, causes douche break over region easily to block, and therefore designs a kind of douche runner considering energy dissipating ability and anti-stifled ability just necessary.
Summary of the invention
The object of the invention is to overcome the anti-stifled ability of douche in the past, and only rely on turnover region to carry out the shortcoming of energy dissipating, propose a kind of douche considering energy dissipating ability and anti-stifled ability.
For achieving the above object, the technical solution used in the present invention is: comprise the anti-stifled labyrinth flow-path based on venturi principle with water inlet and delivery port;
The described anti-stifled labyrinth flow-path based on venturi principle comprises some identical flow passage units, each flow passage unit is by contraction section, throat, diffuser and the Drainage Section from throat to diffuser four part composition, and between contraction section and diffuser, be provided with vertical block, diffuser and and Drainage Section between be provided with triangle block.
The throat width of described flow passage unit contraction section is 1.2mm, and flow passage unit is wide is 2.6mm, and height is 3.4mm, and runner top edge width is 1.4mm, and left and right sides fillet is 0.2mm; Obtuse-angulate two edge lengths of triangle block shape are respectively 0.6mm and 1.6mm, obtuse angle is 120 °, the limit that triangle block is the shortest and the acute angle that vertical curve is formed are 75 °, and triangle block the top is 0.8mm with the distance of runner top edge, and the distance of high order end and top edge center line is 0.2mm; The width of vertical block is 0.3mm, be highly 1.5mm, above vertical block, two fillets are 0.05mm, and below two fillet is 0.2mm, the distance of the left circular arc left end in below and runner contraction section is 0.6mm, and the contraction section distance of below right circular arc right-hand member and next flow passage unit is 1.3mm.
Described water inlet is grid type water inlet.
Present invention improves over labyrinth flow-path structure, be applied to by venturi principle in runner design, each flow passage unit comprises contraction section, throat, diffuser and the Drainage Section from throat to diffuser.The present invention utilizes the triangle block of interpolation, the region of formation whirlpool energy dissipating is made not only to comprise runner corner, also comprise near block, and the turnover of Venturi tube, convergent and gradually draw together and form local head loss, improve runner energy dissipating ability, utilize the fair speed that Drainage Section is formed simultaneously, the lower easily stifled diffusion turn section of speed of rinsing, make the latter be not easy to produce blocking, reach the object of douche energy dissipating and anti-clogging.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention;
Fig. 2 is the anti-stifled douche flow passage unit structure chart that the present invention is based on venturi principle;
Fig. 3 be the anti-stifled douche that the present invention is based on venturi principle Ya Li ?discharge relation curve, wherein abscissa is pressure, and ordinate is flow.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail.
See Fig. 1, the present invention includes the anti-stifled labyrinth flow-path 7 based on venturi principle with grid type water inlet 2 and delivery port 1; Anti-stifled labyrinth flow-path 7 based on venturi principle comprises some identical flow passage units, each flow passage unit is by contraction section 3, throat 4, diffuser 5 and the Drainage Section from throat to diffuser 6 four part composition, and between contraction section 3 and diffuser 5, be provided with vertical block 9, diffuser 5 and and Drainage Section 6 between be provided with triangle block 8.
See Fig. 2, the throat width of flow passage unit contraction section 3 of the present invention is 1.2mm, and flow passage unit is wide is 2.6mm, and height is 3.4mm, and runner top edge width is 1.4mm, and left and right sides fillet is 0.2mm; Obtuse-angulate two edge lengths of triangle block 8 shape are respectively 0.6mm and 1.6mm, obtuse angle is 120 °, the limit that triangle block 8 is the shortest and the acute angle that vertical curve is formed are 75 °, triangle block 8 the top is 0.8mm with the distance of runner top edge, and the distance of high order end and top edge center line is 0.2mm; The width of vertical block 9 is 0.3mm, be highly 1.5mm, above vertical block 9, two fillets are 0.05mm, and below two fillet is 0.2mm, the distance of the left circular arc left end in below and runner contraction section 3 is 0.6mm, and the contraction section 3 of below right circular arc right-hand member and next flow passage unit is apart from being 1.3mm.
See Fig. 3, in CFD analysis software FLUENT, carried out the hydraulic performance simulation of the anti-stifled douche based on venturi principle, obtained douche flow at various pressures, and simulate Ya Li ?discharge relation curve, its relational expression is Q=0.2138H
0.5176, flow stance index is 0.5176, and hydraulic performance is good.Pressure increases with unit number and reduces, and the energy dissipating effect of flow passage unit is obvious.More than in runner turning point, and near triangle block, have the obvious whirlpool in many places, enhance runner energy dissipating effect, along water (flow) direction, have larger velocity amplitude at Drainage Section end, the deposit contributing to this region is flushed away, and ensure that the good anti-clogging of douche.
Claims (3)
1. based on an anti-stifled douche for venturi principle, it is characterized in that: comprise the anti-stifled labyrinth flow-path (7) based on venturi principle with water inlet (2) and delivery port (1);
The described anti-stifled labyrinth flow-path (7) based on venturi principle comprises some identical flow passage units, each flow passage unit is by contraction section (3), throat (4), diffuser (5) and the Drainage Section from throat to diffuser (6) four part composition, and vertical block (9) is provided with between contraction section (3) and diffuser (5), between diffuser (5) and Drainage Section (6), be provided with triangle block (8).
2. the anti-stifled douche based on venturi principle according to claim 1, it is characterized in that: the entrance height of described flow passage unit contraction section (3) is 1.2mm, flow passage unit is wide is 2.6mm, height is 3.4mm, runner top edge width is 1.4mm, and left and right sides radius of corner is 0.2mm; Obtuse-angulate two edge lengths of triangle block (8) shape are respectively 0.6mm and 1.6mm, obtuse angle is 120 °, the limit that triangle block (8) is the shortest and the acute angle that vertical curve is formed are 75 °, triangle block (8) the top is 0.8mm with the distance of runner top edge, and the distance of high order end and top edge center line is 0.2mm; The width of vertical block (9) is 0.3mm, be highly 1.5mm, vertical block (9) top two radiuss of corner are 0.05mm, below two radiuss of corner are 0.2mm, the distance of the left circular arc left end in below and runner contraction section (3) is 0.6mm, and contraction section (3) distance of below right circular arc right-hand member and next flow passage unit is 1.3mm.
3. the anti-stifled douche based on venturi principle according to claim 1, is characterized in that: described water inlet (2) is grid type water inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410075278.5A CN103861752B (en) | 2014-03-03 | 2014-03-03 | Based on the anti-stifled douche of venturi principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410075278.5A CN103861752B (en) | 2014-03-03 | 2014-03-03 | Based on the anti-stifled douche of venturi principle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103861752A CN103861752A (en) | 2014-06-18 |
| CN103861752B true CN103861752B (en) | 2016-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410075278.5A Active CN103861752B (en) | 2014-03-03 | 2014-03-03 | Based on the anti-stifled douche of venturi principle |
Country Status (1)
| Country | Link |
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| CN (1) | CN103861752B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104756827B (en) * | 2015-03-20 | 2017-05-03 | 浙江水利水电学院 | Energy dissipating and blocking preventing type water filling device |
| CN107047236B (en) * | 2017-01-09 | 2021-01-22 | 大禹节水集团股份有限公司 | Barb type labyrinth flow passage irrigator |
| CN110663510A (en) * | 2019-10-28 | 2020-01-10 | 石河子大学 | Perforation-shaped flow channel and irrigation device based on same |
| CN112178353B (en) * | 2020-08-28 | 2022-02-18 | 西安交通大学 | Bionic emitter anti-blocking flow channel based on shark dorsal fin structure |
| CN113906981B (en) * | 2021-10-28 | 2022-11-29 | 太原理工大学 | Vortex cavity type drip irrigation emitter |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5144309A (en) * | 1974-08-14 | 1976-04-15 | Hydro Plan Eng Ltd | |
| CN1064189A (en) * | 1991-02-27 | 1992-09-09 | 滴流灌溉体系有限公司 | Incremental pressure-compensating drip irrigation emitter |
| US5673852A (en) * | 1988-02-16 | 1997-10-07 | Roberts; James C. | Drip irrigation tape and method of manufacture |
| CN201871438U (en) * | 2010-08-20 | 2011-06-22 | 杨凌秦川节水灌溉设备工程有限公司 | Inlaid cylindrical drip irrigation tube |
| CN102284387A (en) * | 2011-06-21 | 2011-12-21 | 西北农林科技大学 | Venturi principle-based irrigator |
| CN202621340U (en) * | 2012-05-14 | 2012-12-26 | 新疆蓝山屯河节水科技有限公司 | Small-flow full-turbulent-flow drop irrigation emitter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7735758B2 (en) * | 2006-09-18 | 2010-06-15 | Amir Cohen | Drip irrigation hoses of the labyrinth type and flow-control elements for producing such hoses |
-
2014
- 2014-03-03 CN CN201410075278.5A patent/CN103861752B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5144309A (en) * | 1974-08-14 | 1976-04-15 | Hydro Plan Eng Ltd | |
| US5673852A (en) * | 1988-02-16 | 1997-10-07 | Roberts; James C. | Drip irrigation tape and method of manufacture |
| CN1064189A (en) * | 1991-02-27 | 1992-09-09 | 滴流灌溉体系有限公司 | Incremental pressure-compensating drip irrigation emitter |
| CN201871438U (en) * | 2010-08-20 | 2011-06-22 | 杨凌秦川节水灌溉设备工程有限公司 | Inlaid cylindrical drip irrigation tube |
| CN102284387A (en) * | 2011-06-21 | 2011-12-21 | 西北农林科技大学 | Venturi principle-based irrigator |
| CN202621340U (en) * | 2012-05-14 | 2012-12-26 | 新疆蓝山屯河节水科技有限公司 | Small-flow full-turbulent-flow drop irrigation emitter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103861752A (en) | 2014-06-18 |
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