CN107047236B - Barb type labyrinth flow passage irrigator - Google Patents
Barb type labyrinth flow passage irrigator Download PDFInfo
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- CN107047236B CN107047236B CN201710013647.1A CN201710013647A CN107047236B CN 107047236 B CN107047236 B CN 107047236B CN 201710013647 A CN201710013647 A CN 201710013647A CN 107047236 B CN107047236 B CN 107047236B
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- barb
- barbs
- labyrinth flow
- flow channel
- water
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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
Abstract
The invention relates to a barb type labyrinth flow passage irrigator, which comprises a labyrinth flow passage provided with a water inlet and a water outlet, and is characterized in that: the labyrinth flow channel comprises two lines of identical flow channel units which are connected in series, wherein each flow channel unit consists of upper side barbs and lower side barbs which are arranged in the direction of counter current and are staggered relatively; the lower barbs are arranged between the two upper barbs; every upside barb or downside barb all is equipped with the setting and meets the circular arc section of water side and set up the straightway in the leeward side. The invention has good water energy dissipation effect, uniform water outlet and difficult blockage.
Description
Technical Field
The invention relates to the field of irrigation, in particular to a barb type labyrinth runner irrigator.
Background
Drip irrigation is the most effective water-saving irrigation mode in the world at present and is the best irrigation mode for developing modern agriculture, high-efficiency and conservation-oriented agriculture. The irrigator is the most critical part of the whole drip irrigation project, the quality of the performance of the irrigator greatly determines the irrigation quality of the whole project benefit, and particularly, the blockage of a flow channel is more serious under the conditions of incomplete filtering equipment and poor water quality, and the blockage is mainly caused by chemical substances, microorganism viscous substances and impurities in water fertilizer liquid. The research focus of current drip irrigation experts is to improve the uniformity coefficient of water outlet and enhance the anti-blocking capability of the flow passage by increasing the section size of the flow passage and ensure that the irrigator has good working performance under a certain pressure condition.
Disclosure of Invention
The invention aims to solve the technical problem of providing the barb type labyrinth flow passage irrigator which has good water energy dissipation effect, uniform water outlet and difficult blockage.
In order to solve the problems, the barb type labyrinth flow passage irrigator comprises a labyrinth flow passage provided with a water inlet and a water outlet, and is characterized in that: the labyrinth flow channel comprises two lines of identical flow channel units which are connected in series, wherein each flow channel unit consists of upper side barbs and lower side barbs which are arranged in the direction of counter current and are staggered relatively; the lower barbs are arranged between the two upper barbs; every upside barb or downside barb all is equipped with the setting and meets the circular arc section of water side and set up the straightway in the leeward side.
Each flow channel unit has the total length of 2.1 mm.
The width of each upper side barb or each lower side barb is 0.5mm, and the included angle between each upper side barb or each lower side barb and the straight line of the water facing side is 45-65 degrees.
The length of the straight line segment is 1.63 mm.
The interval of upside barb with downside barb is 1.56~1.92 mm.
The interval between the adjacent two of unilateral between the upside barb or two the interval between the downside barb is 3.42~3.78 mm.
The radius of the circular arc section is 0.05-0.65 mm.
The water inlet is a grid type water inlet.
Compared with the prior art, the invention has the following advantages:
1. the invention is designed according to the barb phenomenon on the plant stem, the flow channel of the irrigator consists of two lines of opposite staggered barb-type structures, the deflection angle of each line of barb-type structure is in the direction against the water flow, each barb-type structure consists of an arc segment at the water-facing side and a straight line segment at the water-backing side, and the adjacent barb-type structures keep a certain interval, and the water flow generates strong bending collision and vortex effects by utilizing the dissipation effect of the barb-type structures deviated to the water flow in the inlet direction and the streaming effect generated by the barb-type structures, so that the energy consumption effect is obvious.
2. The minimum section size range of the flow channel structure is 0.55-0.65 mm2The flow state index range is 0.474-0.508; when the included angle between the barb and the straight line on the water-facing side is 45 degrees and the radius of the circular arc is 0.65, the minimum value of the flow state index is obtained, and the anti-blocking performance is also optimal.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic view of the overall structure of the present invention.
FIG. 2 is a schematic diagram of a unit structure of the barb type labyrinth flow passage of the present invention.
FIG. 3 is a pressure-flow relationship graph of the inverted labyrinth flow passage of the present invention.
FIG. 4 is a water flow trace diagram of an embodiment of the inverted labyrinth flow passage of the present invention.
FIG. 5 is a velocity vector diagram of an embodiment of the inverted labyrinth flow channel of the present invention.
In the figure: 1-water outlet; 2-a water inlet; 3, a labyrinth flow channel; 4-underside barb; 5-upper side agnail; 6-arc section; 7-straight line segment.
Detailed Description
As shown in figures 1-2, the barb type labyrinth flow passage irrigator comprises a labyrinth flow passage 3 provided with a water inlet 2 and a water outlet 1. The labyrinth flow channel 3 comprises two lines of identical flow channel units which are connected in series, wherein each flow channel unit consists of upper side barbs 5 and lower side barbs 4 which are arranged in the direction of counter current and are staggered relatively; the lower barbs 4 are arranged between the two upper barbs 5; every upside barb 5 or downside barb 4 all are equipped with the setting and meet the circular arc section 6 of water side and set up the straightway 7 in the leeward side.
Wherein: the total length of each flow channel unit is 2.1 mm.
The width of each upper side barb 5 or each lower side barb 4 is 0.5mm, and the included angle between each upper side barb 5 or each lower side barb 4 and the straight line of the water facing side is 45-65 degrees.
The length of straight line segment 7 is 1.63 mm.
The distance between the upper barb 5 and the lower barb 4 is 1.56-1.92 mm.
The distance between two adjacent upper side barbs 5 on one side or the distance between two lower side barbs 4 on one side is 3.42-3.78 mm.
The radius of the circular arc section 6 is 0.05-0.65 mm.
The water inlet 2 is a grid type water inlet.
The simulation of the hydraulic performance of the barb type labyrinth runner irrigator is carried out in CFD analysis software FLUENT (see figure 3), the flow of the irrigator under different pressures is obtained, and a pressure-flow relation curve is fitted, wherein the relation is
The flow state index is 0.474, and the hydraulic performance is good. The pressure is reduced along with the increase of the number of the units, and the energy dissipation effect of the flow passage units is obvious.
And (3) observing a water flow trace diagram and a velocity vector diagram (see fig. 4 and 5) of the middle section of the flow channel, and generating strong bending collision and vortex effects on water flow by utilizing the dissipation effect of the barb type structure on the water flow and the streaming effect generated by the barb structure, so that the water flow turbulence energy dissipation effect is obvious. The whole flow passage is continuous, uniform and basically free of a dead angle area, the only low-speed area is a vortex area, the position of the vortex area is a dynamic area and constantly changes along with water flow disturbance, deposition cannot be generated, and therefore the emitter is not prone to being blocked when used for a long time.
Claims (7)
1. Barb type maze runner irrigator, including maze runner (3) that are equipped with water inlet (2) and delivery port (1), its characterized in that: the labyrinth flow channel (3) comprises two lines of identical flow channel units which are connected in series, wherein each flow channel unit consists of upper side barbs (5) and lower side barbs (4) which are arranged in the direction of counter current and are staggered relatively; the lower barbs (4) are arranged between the two upper barbs (5); each upper side barb (5) or each lower side barb (4) is provided with an arc section (6) arranged on the water facing side and a straight line section (7) arranged on the backwater side; the width of each upper side barb (5) or each lower side barb (4) is 0.5mm, and the included angle between each upper side barb (5) or each lower side barb (4) and the straight line of the water-facing side is 45-65 degrees.
2. The barbed labyrinth flow-path emitter according to claim 1, wherein: each flow channel unit has the total length of 2.1 mm.
3. The barbed labyrinth flow-path emitter according to claim 1, wherein: the length of the straight line segment (7) is 1.63 mm.
4. The barbed labyrinth flow-path emitter according to claim 1, wherein: the space between the upper side barb (5) and the lower side barb (4) is 1.56-1.92 mm.
5. The barbed labyrinth flow-path emitter according to claim 1, wherein: the interval between two adjacent unilateral upside barbs (5) or two interval between downside barb (4) is 3.42~3.78 mm.
6. The barbed labyrinth flow-path emitter according to claim 1, wherein: the radius of the circular arc section (6) is 0.05-0.65 mm.
7. The barbed labyrinth flow-path emitter according to claim 1, wherein: the water inlet (2) is a grid type water inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710013647.1A CN107047236B (en) | 2017-01-09 | 2017-01-09 | Barb type labyrinth flow passage irrigator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710013647.1A CN107047236B (en) | 2017-01-09 | 2017-01-09 | Barb type labyrinth flow passage irrigator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107047236A CN107047236A (en) | 2017-08-18 |
| CN107047236B true CN107047236B (en) | 2021-01-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710013647.1A Active CN107047236B (en) | 2017-01-09 | 2017-01-09 | Barb type labyrinth flow passage irrigator |
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| Country | Link |
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| CN (1) | CN107047236B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113455344B (en) * | 2021-07-27 | 2022-07-01 | 山东大学 | Star-shaped labyrinth flow channel drip irrigation emitter |
| CN113906981B (en) * | 2021-10-28 | 2022-11-29 | 太原理工大学 | Vortex cavity type drip irrigation emitter |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2436232Y (en) * | 2000-07-27 | 2001-06-27 | 于井朝 | Joint type gravity water filling device |
| CN101712016A (en) * | 2009-11-20 | 2010-05-26 | 河海大学 | Fishbone drop irrigation douche runner |
| CN103861752A (en) * | 2014-03-03 | 2014-06-18 | 西安交通大学 | Anti-blockage emitter based on Venturi principle |
| CN105706854A (en) * | 2016-03-17 | 2016-06-29 | 西安交通大学 | Anti-blocking irrigation emitter based on cross-section double-circulation phenomenon of curve |
-
2017
- 2017-01-09 CN CN201710013647.1A patent/CN107047236B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2436232Y (en) * | 2000-07-27 | 2001-06-27 | 于井朝 | Joint type gravity water filling device |
| CN101712016A (en) * | 2009-11-20 | 2010-05-26 | 河海大学 | Fishbone drop irrigation douche runner |
| CN103861752A (en) * | 2014-03-03 | 2014-06-18 | 西安交通大学 | Anti-blockage emitter based on Venturi principle |
| CN105706854A (en) * | 2016-03-17 | 2016-06-29 | 西安交通大学 | Anti-blocking irrigation emitter based on cross-section double-circulation phenomenon of curve |
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|---|---|
| CN107047236A (en) | 2017-08-18 |
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