CN107347584B - A kind of adjustable detachable spiral Transportation about Labyrinth Emitter of flow - Google Patents
A kind of adjustable detachable spiral Transportation about Labyrinth Emitter of flow Download PDFInfo
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- CN107347584B CN107347584B CN201710555751.3A CN201710555751A CN107347584B CN 107347584 B CN107347584 B CN 107347584B CN 201710555751 A CN201710555751 A CN 201710555751A CN 107347584 B CN107347584 B CN 107347584B
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- douche
- main body
- flow
- path
- water outlet
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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
Abstract
The invention discloses a kind of adjustable detachable spiral labyrinth flow-path douches of flow, it is characterised in that: it includes main body douche, the water outlet ring cavity being threaded in outside the main body douche, and is threaded in the hollow billet at main body douche both ends；Spiral labyrinth flow-path and external screw thread are equipped on the outer wall of the main body douche；Offer water inlet on the outer wall close to one end of the main body douche, the water inlet be connected to the main body douche inner cavity and the spiral labyrinth flow-path；It is equipped with water outlet on the outer wall of the water outlet ring cavity, the water outlet is connected to the spiral labyrinth flow-path of the main body douche.Main body douche and water outlet ring cavity of the invention easily can be screwed or be separated, and realized that the flow of water outlet is adjustable, facilitated main body douche to clean and overhaul, improve the performance of anti-blockage and reusing of entire douche.
Description
Technical field
The present invention relates to a kind of douche, in particular to the adjustable detachable spiral Transportation about Labyrinth Emitter of a kind of flow belongs to
The water-saving irrigation instrument technical field in agricultural production.
Background technique
Labyrinth type douche has many advantages, such as that effect of energy dissipation is good, and water outlet is uniform, manufacturing cost is low, wide adaptation range, is regarded
For the superior douche of current performance.Generally for stablized, uniform low discharge, the inside stream of labyrinth flow-path douche
Road size is typically in the range of 0.5~1.2mm, it is easy to block.Blockage problem be always domestic and foreign scholars research emphasis and
Problem, douche internal flow state has a great impact to its hydraulic performance, when blocking, runner water flow inside waterpower
It can be deteriorated, uniformity of irrigation water appilcation is affected.Practical experience shows that blockage problem is inevitable, under regular situation, field pipe-net device
It just will appear different degrees of blocking within average 2 years or so, even good, using more perfect filtering measure in water quality
Under the conditions of, douche still has 1/3 physical clogging, blocks less serious case, influences the uniformity of irrigation water appilcation of douche, and severe one is then needed to pouring water
Pipe, band are replaced, and not only increase investment, maintenance cost, and seriously hinder the promotion and application of labyrinth type douche；
The flow of the common labyrinth type douche in the country is generally 1~4L/h, and every kind of douche can only realize that single flow is irrigated, Wu Faman
Sufficient crop water requirement in different growth periods changes demand, and when irrigation quantity is greater than the water demand of crop, irrigation method deviates section
The theory that water is irrigated, exacerbates the in short supply of agricultural water；When irrigation quantity is less than the water demand of crop, crop is unable to satisfy in growth week
Water is normally needed in phase.In addition, domestic most common labyrinth type trickle irrigation product material therefor generally is PE pipe at present, there are nothings
The problems such as method is dismantled, cannot be reused.Therefore, produce that performance of anti-blockage is good, realizes multistage flow adjusts, is detachable clear
It washes and the New-style Emitter that can be reused is extremely urgent.
Summary of the invention
In view of the above-mentioned problems, the object of the present invention is to provide a kind of performance of anti-blockage, good, flow multistage can adjust, is removable
Unload the spiral Transportation about Labyrinth Emitter that cleans and can reuse.
To achieve the above object, the invention adopts the following technical scheme: a kind of adjustable detachable spiral labyrinth of flow
Runner douche, which is characterized in that the douche includes:
The outer wall of main body douche, the main body douche is equipped with spiral labyrinth flow-path and external screw thread；
It is discharged ring cavity, the water outlet ring cavity is threaded in outside the main body douche；
Hollow billet, two hollow billets are threaded in main body douche both ends；
Water inlet, the water inlet are provided on the outer wall of main body douche one end, and the water inlet connects
Lead to the main body douche inner cavity and the spiral labyrinth flow-path；
Water outlet, the water outlet is provided on the outer wall of the water outlet ring cavity, and the water outlet is connected to the main body
The spiral labyrinth flow-path of douche.
The main body douche is hollow cylinder structure, and the spiral labyrinth flow-path and the external screw thread are described in
The axial direction of main body douche is arranged alternately.
It is integrally formed with screwed pipe respectively at the both ends of the main body douche, two hollow billets pass through the screwed pipe and the master
Combined type connects between body douche forms pipe, and the outer diameter of the hollow billet is less than the outer diameter of the main body douche.
Circumferentially outwardly convex forms hollow circular ring boss, the hollow circular ring boss to the middle part outer wall of the water outlet ring cavity
Cross section be up-narrow and down-wide trapezoidal shape, it is described water outlet ring cavity on be located at hollow circular ring boss two sides internal screw thread be separated by
At least two screw pitch, the water outlet is provided on the hollow circular ring boss, and the water outlet is connected to itself and the water inlet
The spiral labyrinth flow-path between mouthful is effective labyrinth flow-path.
The water inlet is a rectangular slat mouth, and the setting of one interval is multiple in the water inlet and along its length
Grid is filtered, and the top surface of multiple filtering grids is lower than the bottom surface of the spiral labyrinth flow-path.
The both ends inner wall of the hollow billet is equipped with the screw thread with screwed pipe cooperation.
The invention adopts the above technical scheme, has the advantages that the 1, present invention by the outside of main body douche
It is threadedly coupled water outlet ring cavity, spiral labyrinth flow-path and external screw thread are set in the outer wall of main body douche, the one of main body douche
End outer wall opens up water inlet, is provided with water outlet on water outlet ring cavity, main body douche and water outlet ring cavity can easily screw or
Separation, realizes that the flow of water outlet is adjustable, facilitates main body douche to clean and overhaul, improves the anti-clogging of entire douche
Energy and reusing.2, hollow billet of the present invention is sealedly connected on the two sides of main body douche by screwed pipe, and the outer diameter of hollow billet is less than
The outer diameter of main body douche, combined type connects between realization body douche and the pipe of hollow billet, avoids between hollow billet and water outlet ring cavity
Interference, the dismounting and cleaning of convenient entire spiral Transportation about Labyrinth Emitter are realized the recycling of spiral Transportation about Labyrinth Emitter, are dropped
Low investment maintenance cost accelerates the popularization and use of spiral Transportation about Labyrinth Emitter.3, the middle part outer wall edge of water outlet ring cavity of the invention
Hollow circular ring boss is peripherally and outwardly convexed to form, water outlet is arranged on hollow circular ring boss, can facilitate and adjust water outlet
Flow plays the role of buffer storage to the water flow of water outlet to be suitable for the water requirement of Different Crop.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is the attachment structure schematic diagram of main body douche and hollow billet of the present invention；
Fig. 3 is the structural schematic diagram of main body douche of the present invention；
Fig. 4 is the schematic diagram of the section structure of present invention water outlet ring cavity；
Fig. 5 is the schematic diagram of the section structure of hollow billet of the present invention；
Fig. 6 is the relationship song of the flow of the water outlet of water outlet ring cavity of the invention and the rotating cycle of spiral labyrinth flow-path
Line chart.
Specific embodiment
The present invention is described in detail below with reference to the accompanying drawings and embodiments.
As shown in Figure 1, it includes hollow the present invention provides a kind of adjustable detachable spiral Transportation about Labyrinth Emitter of flow
The main body douche 1 of cylindrical structure, the water outlet ring cavity 2 being threaded in outside main body douche 1, and it is threaded in master
The hollow billet 3 at 1 both ends of body douche；Spiral labyrinth flow-path 11 and external screw thread 12 are equipped on the outer wall of main body douche 1, and
Spiral labyrinth flow-path 11 is axially to be arranged alternately along main body douche 1 with external screw thread 12；In one end close to main body douche 1
Outer wall on offer water inlet 13, water inlet 13 is connected to inner cavity and the spiral labyrinth flow-path 11 of main body douche 1；It is being discharged
The outer wall of ring cavity 2 is equipped with water outlet 22, and water outlet 22 is connected to the spiral labyrinth flow-path 11 of main body douche 1.
Further, as shown in Fig. 2, being integrally formed with screwed pipe 14 respectively at the both ends of main body douche 1, hollow billet 3 passes through spiral shell
Pipe 14 is connected to the both ends of main body douche 1, different from common internally-inlaid cylinder, chip douche, realization body douche 1
Combined type connects between the pipe of hollow billet 3, when main body douche 1 blocks, can easily dismantle main body douche 1, twists
The water outlet ring cavity 2 outside main body douche 1 is opened, to being cleaned at the blocking of main body douche 1, no replacement is required main body douche
1, it realizes the recycling of spiral Transportation about Labyrinth Emitter, can reduce investment and maintenance cost, accelerate spiral Transportation about Labyrinth Emitter
Popularization and use, meanwhile, guarantee hollow billet 3 and main body douche 1 sealed connection, prevent drainage；Outside hollow billet 3
Diameter is less than the outer diameter of main body douche 1, prevents hollow billet 3 and water outlet ring cavity 2 from generating interference, and avoid the cloth of 3 outer wall thread of hollow billet
It sets, makes the simple production process of hollow billet 3.
Further, as shown in figure 4, water outlet ring cavity 2 middle part outer wall circumferentially outwardly convex formed hollow circular ring boss
21, the cross section of hollow circular ring boss 21 is up-narrow and down-wide trapezoidal shape, is discharged on ring cavity 2 and is located at 21 two sides of hollow circular ring boss
Internal screw thread be separated by least two screw pitch, water outlet 22 is provided on hollow circular ring boss 21, and water outlet 22 be connected to its with into
Spiral labyrinth flow-path 11 between the mouth of a river 13 is effective labyrinth flow-path；In this way, water outlet ring cavity 2 can be around 1 axis of main body douche
Rotation changes effective labyrinth flow-path to adjust the water yield of water outlet 22, is adapted to the different water demands of crop；Meanwhile hollow circle
Ring convex platform 21 has transition buffer effect to the irrigation water that effective labyrinth flow-path flows out.
Further, as shown in figure 3, water inlet 13 is a rectangular slat mouth, in water inlet 13 and along its length
Multiple filtering grids 15 are arranged in one interval, and the top surface of multiple filtering grids 15 is lower than the bottom surface of spiral labyrinth flow-path 11,
In such manner, it is possible to flow into water flow steadily in spiral labyrinth flow-path 11 through water inlet 13 from 1 inner cavity of main body douche.
Further, as shown in figure 5, the both ends inner wall of hollow billet 3 is equipped with the screw thread cooperated with screwed pipe 14, hair can be facilitated
The assembled in series of pipe and main body douche 1.
As shown in fig. 6, giving the adjustable detachable spiral Transportation about Labyrinth Emitter of inventive flow in inlet pressure head
Runner exit flow (flow at water outlet 22 on water outlet ring cavity 2) and rotating cycle (effective labyrinth flow-path) when for 15m
Graph of relation.
Runner is the long labyrinth flow-path of spiral in the present invention, and local head loss is the principal mode of runner energy consumption, is damaged along journey
Dephasing can be ignored local losses, therefore assume all local head loss of labyrinth flow-path energy dissipating.Simultaneously as office
Portion's waterhead fall only it is related with flow channel shape, for identical flow passage structure by flow channel length distribution local head loss and
Speech, head loss evenly distribute in length, meet linear superposition rule, therefore spiral labyrinth flow-path can be incited somebody to action
Entire head loss is discrete and is evenly distributed on entire runner, can be by Darcy-Weisbach equations spiral fan
Average speed v, the Darcy-Weisbach formula of water flow is as follows in the runner of palace:
In formula, H is head loss, m；V is water flow average speed, m/s；G is acceleration of gravity, takes 9.81m/s2；F is
The coefficient of friction resistance；L is effective helix angle labyrinth flow-path length, m；R is spiral labyrinth flow-path hydraulic radius, m.
Wherein, because labyrinth flow-path is for energy dissipating, by calculating, head loss is very close to inlet pressure water
Head, thus head loss H can approximation be taken as inlet pressure head.
Coefficient of friction resistance f passes through the process of spiral labyrinth flow-path by Fluent software simulated flow, gives inlet pressure water
Head is 15m, obtains the flow of runner exit, obtains water flow average speed using formula (4), formula (1) is recycled to be back-calculated to obtain
The coefficient of friction resistance (average value), coefficient of friction resistance f are about 0.597.
The formula that rectangularl runner section hydraulic radius can be used in spiral labyrinth flow-path hydraulic radius calculates, and formula is as follows:
In formula, w is spiral labyrinth flow-path width, mm；D is spiral labyrinth flow-path depth, mm.
The hydraulic formula of local head loss is deformed to obtain formula (3) solution comprehensive superposition coefficient ξ of head loss,
In formula, ξ is the comprehensive superposition coefficient of head loss.
Following formula calculating can be used in runner exit flow q:
Q=A × v (4)
In formula, q is spiral labyrinth flow-path rate of discharge, as the flow at the water outlet 22 of water outlet ring cavity 2；L/h；A is
Spiral labyrinth flow-path cross-sectional area, m2。
The dimensional parameters of spiral labyrinth flow-path of the invention are as shown in the table
1 channel size parameter list of table
It is calculated using formula (1)~(4) formula, when inlet pressure head is 15m, the different rotary circle of spiral labyrinth flow-path
Number (effective labyrinth flow-path) effectively length L of labyrinth flow-path, the mean flow rate v of water flow, the comprehensive superposition coefficient ξ of head loss and right
The runner exit flow q under rotating cycle is answered, calculated result is as shown in the table:
Calculation result table when 2 head loss H of table is inlet pressure head 15m
According to calculated result shown in table 2, in the identical situation of specification for finding spiral labyrinth flow-path, flow channel length
Longer, the comprehensive superposition coefficient ξ of head loss is bigger, and effect of energy dissipation is better.
The relationship that the runner exit flow and rotating cycle when entrance pressure head is 15m are drawn by 2 calculated result of table is bent
Line (as shown in Figure 6).Observation Fig. 6 can be seen that circle number is bigger, i.e., runner is longer, and runner exit flow q is smaller, therefore can be with
Effective labyrinth flow-path length between water inlet 13 and water outlet 22 is adjusted by rotary water-out ring cavity 2, runner can be realized and go out
The dynamic regulation of mouth uninterrupted, the as uninterrupted at water outlet 22.
Data fitting is carried out to the relation curve of runner exit flow and rotating cycle in Fig. 6, obtains inlet pressure water
The relationship q=4.5843x of rate of discharge q and rotating cycle x when head 15m-0.5, R2=1, it is obtained according to fitting result formula quasi-
Curve is closed almost to be overlapped with the actual curve in Fig. 6.
Therefore, under different inlet pressure heads, rate of discharge and rotating cycle in the case of available difference head
Relational expression, for seriation of the invention, standardization gross data is provided.
The present invention is only illustrated with above-described embodiment, and structure, setting position and its connection of each component are all can have
Changed.Based on the technical solution of the present invention, the improvement or equivalent that all principles according to the present invention carry out individual part
Transformation, should not exclude except protection scope of the present invention.
Claims (5)
1. a kind of adjustable detachable spiral labyrinth flow-path douche of flow, which is characterized in that the douche includes:
The outer wall of main body douche, the main body douche is equipped with spiral labyrinth flow-path and external screw thread；
It is discharged ring cavity, the water outlet ring cavity is threaded in outside the main body douche；
Hollow billet, two hollow billets are threaded in main body douche both ends；
Water inlet, the water inlet are provided on the outer wall of main body douche one end, and the water inlet is connected to institute
State main body douche inner cavity and the spiral labyrinth flow-path；
Water outlet, the water outlet are provided on the outer wall of the water outlet ring cavity, and the water outlet is connected to the main body and pours water
The spiral labyrinth flow-path of device；
Circumferentially outwardly convex forms hollow circular ring boss, the cross of the hollow circular ring boss to the middle part outer wall of the water outlet ring cavity
Section is up-narrow and down-wide trapezoidal shape, and the internal screw thread that hollow circular ring boss two sides are located on the water outlet ring cavity is separated by least
Two screw pitch, the water outlet are provided on the hollow circular ring boss, and the water outlet be connected to itself and the water inlet it
Between the spiral labyrinth flow-path be effective labyrinth flow-path.
2. the adjustable detachable spiral labyrinth flow-path douche of a kind of flow as described in claim 1, it is characterised in that: institute
Stating main body douche is hollow cylinder structure, and the spiral labyrinth flow-path and the external screw thread are along the main body douche
Axial direction be arranged alternately.
3. the adjustable detachable spiral labyrinth flow-path douche of a kind of flow as claimed in claim 2, it is characterised in that: In
The both ends of the main body douche are integrally formed with screwed pipe respectively, and two hollow billets pass through the screwed pipe and the main body douche shape
It is connected at combined type between pipe, and the outer diameter of the hollow billet is less than the outer diameter of the main body douche.
4. the adjustable detachable spiral labyrinth flow-path douche of a kind of flow as claimed in claim 3, it is characterised in that: institute
Stating water inlet is a rectangular slat mouth, is spaced in the water inlet and integrally along its length and multiple filtering grids are arranged,
And the top surface of multiple filtering grids is lower than the bottom surface of the spiral labyrinth flow-path.
5. the adjustable detachable spiral labyrinth flow-path douche of a kind of flow as claimed in claim 3, it is characterised in that: institute
The both ends inner wall for stating hollow billet is equipped with the screw thread cooperated with the screwed pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710555751.3A CN107347584B (en) | 2017-07-10 | 2017-07-10 | A kind of adjustable detachable spiral Transportation about Labyrinth Emitter of flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710555751.3A CN107347584B (en) | 2017-07-10 | 2017-07-10 | A kind of adjustable detachable spiral Transportation about Labyrinth Emitter of flow |
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| Publication Number | Publication Date |
|---|---|
| CN107347584A CN107347584A (en) | 2017-11-17 |
| CN107347584B true CN107347584B (en) | 2019-12-03 |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101803553B (en) * | 2010-04-26 | 2011-07-27 | 西北农林科技大学 | Bubbler root irrigator comprising threaded labyrinth channels |
| CN102550368B (en) * | 2011-12-12 | 2013-06-26 | 西北农林科技大学 | Underground pressure bubbler root irrigation device |
| CN102527532B (en) * | 2012-01-11 | 2014-05-14 | 西北农林科技大学 | High-flow pressure-compensated drip irrigation emitter |
| RU2532336C1 (en) * | 2013-08-06 | 2014-11-10 | Лев Петрович Петренко | Method of capillary irrigation from the covered ground of agricultural crops (russian logic version - version 5) |
| CN103651053B (en) * | 2013-12-12 | 2016-01-20 | 中国农业大学 | Small high-blocking-resistdrip drip irrigation emitter |
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2017
- 2017-07-10 CN CN201710555751.3A patent/CN107347584B/en active Active
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