CN110367090A - Streamlined plug-in type pressure compensation douche - Google Patents
Streamlined plug-in type pressure compensation douche Download PDFInfo
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- CN110367090A CN110367090A CN201910755320.0A CN201910755320A CN110367090A CN 110367090 A CN110367090 A CN 110367090A CN 201910755320 A CN201910755320 A CN 201910755320A CN 110367090 A CN110367090 A CN 110367090A
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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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- Engineering & Computer Science (AREA)
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Abstract
A kind of streamlined plug-in type pressure compensation douche, douche plug including having water dropper water inlet, douche plug lower part is from top to bottom connected with chamber shell and water outlet extra-oral cavity in turn, pedestal is provided in chamber shell, water dropper cavity is provided between pedestal upper surface and chamber shell, elastomeric pad is equipped in water dropper cavity, the pad hole being connected with compensation runner water inlet is offered on elastomeric pad, labyrinth flow-path is equipped between side of base and chamber shell inner wall, water dropper water inlet passes through pad hole, the pressure compensation channel opened up on compensation runner water inlet and pedestal is connected to the water dropper water outlet of water outlet extra-oral cavity again after being connected to labyrinth flow-path.Streamlined plug-in type pressure compensation douche provided by the invention, the problem of can solve head loss caused by plug prominence causes hollow billet section configuration to be mutated, farthest reduce the plug portion form drag of douche, geometry is simple, with excellent flow dynamic characteristic.
Description
Technical field
The present invention relates to micro-irrigation emitter design field, especially a kind of streamlined plug-in type pressure compensation douche.
Background technique
Trickle irrigation is widely used as a kind of efficient water-saving irrigation technology, and inserted irrigation device is because its installation is simple, maintenance
It is convenient, it is adaptable and be widely used.It, in the duct can shape since inserted irrigation device plug portion will be inserted into inside hollow billet
At protrusion, plug prominence causes hollow billet section configuration to be mutated, and generates local head loss, therefore low-pressure drip irrigation is because of its Energy Conservation
Matter significant effect becomes the hot technology in trickle irrigation field.But low-pressure drip irrigation operating pressure is lower, how under lower pressure most
The reduction pipe network water stream head loss changed greatly improves uniformity of irrigation water appilcation and reduces emitter clogging problem and develops as low-pressure drip irrigation
Key.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of streamlined plug-in type pressure compensation douches, can solve
The problem of head loss caused by plug prominence causes hollow billet section configuration to be mutated, farthest reduces the plug of douche
Partial shape resistance, geometry is simple, with excellent flow dynamic characteristic.
In order to solve the above technical problems, the technical scheme adopted by the invention is that: a kind of streamlined plug-in type pressure compensation
Douche, including have water dropper water inlet douche plug, douche plug lower part be from top to bottom connected in turn chamber shell and
It is discharged extra-oral cavity, pedestal is provided in chamber shell, water dropper cavity is provided between pedestal upper surface and chamber shell, is equipped in water dropper cavity
Elastomeric pad, offers the pad hole being connected with compensation runner water inlet on elastomeric pad, side of base and chamber shell inner wall it
Between be equipped with labyrinth flow-path, water dropper water inlet is logical by the pressure compensation that opens up on pad hole, compensation runner water inlet and pedestal
Road is connected to the water dropper water outlet of water outlet extra-oral cavity again after being connected to labyrinth flow-path.
Douche plug includes plug back taper, and plug back taper lower part is connected with plug cone neck.
Douche plug is single ellipse double streamlined douche plugs of throwing or single ellipse double circular jet line style douche plugs.
When douche plug is the streamlined douche plug of single ellipse double throwings, the cross section of plug back taper and plug cone neck
Streamline is single ellipse double throwing streamline curves, and the single ellipse pair sections that meet water for throwing streamline curves are elliptic curve, and the ellipse double throwings of list are streamlined
The flow section of curve is made of two sections of parabolic curve connections.
When douche plug is single ellipse double circular jet line style douche plugs, the cross section of plug back taper and plug cone neck
Streamline is single ellipse double circular jet linear curves, and the section that meets water of single ellipse double circular jet linear curves is elliptic curve, single ellipse double circular jet line styles
The flow section of curve is made of two sections of circular curve connections.
Chamber shell inner wall is provided with support ring, and elastomeric pad upper surface is matched with support ring, the pad hole of elastomeric pad with
It is connected to by support ring with water dropper water inlet.
Pressure compensation runner leads to pedestal side wall from base central, and is connected to the labyrinth flow-path entrance of labyrinth flow-path.
Labyrinth flow-path is the labyrinth flow-path of square flow path of gear profile form, and outlet goes out circulation road and water dropper water outlet by pedestal
Connection.
Streamlined plug-in type pressure compensation douche provided by the invention, design principle are as follows:
Weak resistance principle: inserted irrigation device plug portion will go deep into inside hollow billet, will form protrusion, plug in the duct
Prominence causes hollow billet section configuration to be mutated, and generates local head loss.When drip irrigation pipe water flow flows through plug, meet water in plug
Duan Shuiliu is separated by transverse shear stress, since the streamlined plug section that meets water by typical round curve is changed to elliptic curve, water flow separation
Smoother, the pressure blocking zone range formed before the section that meets water is smaller, and pressure is lower.Water flow enters after the section that meets water goes to flow
Section, water flow is not separated with side wall in flow section, but is gone downstream along side wall.Plug downstream is not in negative pressure whirlpool area, is subtracted
Lack capillary flow in the form drag of plug high spot, reduces the local head loss of douche plug.
Anti-clogging principle: becoming streamlined from blunt form for douche plug shape, leads to plug protrusion water flow nearby
Become smooth smooth from acutely rolling, and solid particle is from reducing solid in the case where plug collects around and becomes flowing downstream in water flow
Body particle enters the probability of douche, reduces the risk of douche blocking.
Pressure compensation principle: pedestal is equipped with pressure compensation runner, and after pressure water stream enters water dropper cavity, elastomeric pad exists
It is pressed down against compensation runner under pressure effect, reduces the discharge area of compensation runner.But since pressure increase causes flow velocity
Discharge section area is reduced while increase, and practical mistake water inventory is made to keep relative stability, and realizes pressure compensation effect.
Streamlined plug-in type pressure compensation douche provided by the invention, geometry are simple, dynamic with excellent fluid
Force characteristic.When water flow flows through plug, water flow will not occur to separate in advance in plug side wall, and pin tail subtracts without negative pressure whirlpool area
Capillary flow is lacked in the form drag of plug high spot, has reduced douche local head loss, improve water flow in hollow billet
In conveying distance, increase the laying length of hollow billet, under the same conditions, increase uniformity of irrigation water appilcation and irrigated area.It fills
Hydrophone plug shape becomes streamlined from blunt form, causes plug high spot water flow to become smooth smooth from acutely rolling, water
In stream solid particle from plug collect around become flowing downstream and under, reduce the probability that solid particle enters douche, subtract
The risk of douche blocking is lacked.Douche has pressure compensation effect, and no matter hillside fields or level land can reduce water dropper resistance,
Extend hollow billet laying length, improves uniformity of irrigation water appilcation.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples:
Fig. 1 is cross-sectional view of the invention；
Fig. 2 is axonometric drawing of the invention；
Fig. 3 is the generation schematic diagram of the plug back taper of one douche plug of the embodiment of the present invention；
Fig. 4 is first single ellipse double throwing streamline curve coordinate diagrams used in one douche plug of the embodiment of the present invention；
Fig. 5 is the generation schematic diagram of the plug back taper of two douche plug of the embodiment of the present invention；
Fig. 6 is second single ellipse double circular jet linear curve coordinate diagrams used in two douche plug of the embodiment of the present invention；
Fig. 7 is the streamlined douche plug of the embodiment of the present invention three water flow streamline distribution figure nearby；
Fig. 8 is three pyramid type douche plug of embodiment of the present invention water flow streamline distribution figure nearby；
Fig. 9 is the streamlined douche plug of the embodiment of the present invention three flow turbulence intensity distribution map nearby；
Figure 10 is three pyramid type douche plug of embodiment of the present invention flow turbulence intensity distribution map nearby.
Specific embodiment
Embodiment one
As depicted in figs. 1 and 2, a kind of streamlined plug-in type pressure compensation douche, the filling including having water dropper water inlet 2
Hydrophone plug 1,1 lower part of douche plug are from top to bottom connected with chamber shell 12 and water outlet extra-oral cavity 16, setting in chamber shell 12 in turn
There is pedestal 10, water dropper cavity 14 be provided between 10 upper surface of pedestal and chamber shell 12, is equipped with elastomeric pad 5 in water dropper cavity 14,
The pad hole being connected with compensation runner water inlet 6 is offered on elastomeric pad 5, is set between 12 inner wall of 10 side of pedestal and chamber shell
There is labyrinth flow-path 11, water dropper water inlet 2 passes through the pressure compensation opened up on pad hole, compensation runner water inlet 6 and pedestal 10
Channel 7 is connected to the water dropper water outlet 15 of water outlet extra-oral cavity 16 again after being connected to labyrinth flow-path 11.
Douche plug 1 includes plug back taper 3, and 3 lower part of plug back taper is connected with plug cone neck 4.
Douche plug 1 is single ellipse double streamlined douche plugs of throwing, the cross section of plug back taper 3 and plug cone neck 4
Streamline is single ellipse double throwing streamline curves, and the single ellipse pair sections that meet water for throwing streamline curves are elliptic curve, and the ellipse double throwings of list are streamlined
The flow section of curve is made of two sections of parabolic curve connections.
The detailed technology scheme of douche plug 1 is as follows:
A kind of ellipse double streamlined douche plugs of throwing of list, including plug back taper 3,3 upper surface of plug back taper offer plug
Water inlet, 3 lower surface of plug back taper are connected to plug cone neck 4, and the cross-sectional outling line of plug back taper 3 is that single ellipse double throwings are streamlined
Curve, the plane space area that the single ellipse double throwing streamline curves 18 of the second of end face surround thereon is minimum, and the first of lower end surface
Single ellipse double plane space area maximums throwing streamline curve 19 and surrounding；The cross-sectional outling line that plug bores neck 4 is single ellipse double throwings
Streamline curve, the plane space area phases that the ellipse double throwing streamline curves of the plug of end face and lower end surface cone neck list surround thereon
Together.
It is as shown in Figure 3:
Plug back taper 3 is obtained by following steps:
Step 1: combining to obtain first single ellipse double throwing streamline curves 19 by mathematic(al) representation；
Step 2: the point on the basis of first single ellipse double central point O for throwing streamline curves 19 sets up rectangular coordinate system, by the
One single ellipse pair of throwing streamline curves 19 reduce n times, 0 < n < 1, second single ellipse double throwing streamline curves 18 are obtained, if the second list is ellipse
Double central points for throwing streamline curve 18 are O '；
Step 3: by second single ellipse double throwing upward vertical travel distance h of streamline curve 18, connecting the central point of two curves
OO'；
Step 4: taking second single ellipse double throwing streamline curves 18 as the upper surface of plug back taper 3, flowed with first single ellipse double throw
Linear curve 19 obtains plug back taper by setting-out with the central point OO ' of two curves for path for the lower end surface of plug back taper 3
3。
Plug cone neck 4 is obtained by following steps:
Step 1: combining to obtain first single ellipse double throwing streamline curves 19 by mathematic(al) representation；
Step 2: the point on the basis of first single ellipse double central point O for throwing streamline curves 19 sets up rectangular coordinate system, by the
One single ellipse pair of throwing streamline curves 19 reduce m times, and 0.6≤m≤0.8 obtains the ellipse double throwing streamline curves of plug cone neck list, will insert
The ellipse double streamline curve progress stretched verticallies of throwing of nose cone neck list obtain plug cone neck 4.
As shown in figure 4, first it is single it is ellipse it is double throw streamline curves 19 planar set two it is orthogonal, intersection point is
The number axis of O point, wherein horizontal axis is X-axis, and the longitudinal axis is Y-axis, this is XOY rectangular coordinate system, by first single ellipse double throwing streamline curves
19 are respectively defined as 1 with the intersection point of XOY rectangular coordinate system, and 2,3,4 points；Wherein:
First single ellipse double streamline curves 19 of throwing are to be connected from beginning to end by section curve 1-2-3 and flow section curve 1-4-3 that meets water
The ellipse double throwing streamline curves of the list of formation；
Section curve 1-2-3 that meets water is elliptic curve；
Flow section curve 1-4-3 is connected with parabolic curve 3-4 by parabolic curve 1-4 and is formed.
Meet water a section equation of curve 1-2-3 are as follows:
a2y2+b2x2=a2b2
In formula, a is oval major semiaxis, unit: mm；B is oval semi-minor axis, unit: mm；A value range are as follows: 1≤a≤
10；B value range are as follows: 1≤b≤8；a≥b；X is the abscissa of oval arbitrary point, and y is the ordinate of oval arbitrary point；-a≤x
≤ 0 ,-b≤y≤b.
The equation of parabolic curve 1-4 are as follows:
Y=k2x2+b
In formula, b is the vertex parabolic curve 1-4 to coordinate origin distance, and oval semi-minor axis, unit: mm；k2For certainly
Determine the coefficient of parabola 1-4 shape and opening direction, k2Value range are as follows: -1≤k2≤-0.01；X appoints for parabola 1-4 equation
The abscissa of meaning point, y are the ordinate of 1-4 parabolic equation arbitrary point, x >=0, y >=0.
Parabolic curve 3-4 equation are as follows:
Y=k1x2-b
In formula, b is the vertex parabolic curve 3-4 to coordinate origin distance, and oval semi-minor axis, unit: mm；k1For certainly
Determine the coefficient of parabola 3-4 shape and opening direction, k1Value range are as follows: 0.01≤k1≤1；X is that parabola 3-4 equation is any
The abscissa of point, y are the ordinate of parabola 3-4 equation arbitrary point, x >=0, y≤0.
12 inner wall of chamber shell is provided with support ring 13, and 5 upper surface of elastomeric pad is matched with support ring 13, elastomeric pad 5
Pad hole is connected to by support ring 13 with water dropper water inlet 2.
Pressure compensation runner 7 leads to 10 side wall of pedestal, and the labyrinth flow-path entrance 8 with labyrinth flow-path 11 from 10 center of pedestal
Connection.
Labyrinth flow-path 11 is the labyrinth flow-path of square flow path of gear profile form, and outlet goes out circulation road 9 by pedestal and goes out with water dropper
The mouth of a river 15 is connected to.
Embodiment two
As depicted in figs. 1 and 2, a kind of streamlined plug-in type pressure compensation douche, the filling including having water dropper water inlet 2
Hydrophone plug 1,1 lower part of douche plug are from top to bottom connected with chamber shell 12 and water outlet extra-oral cavity 16, setting in chamber shell 12 in turn
There is pedestal 10, water dropper cavity 14 be provided between 10 upper surface of pedestal and chamber shell 12, is equipped with elastomeric pad 5 in water dropper cavity 14,
The pad hole being connected with compensation runner water inlet 6 is offered on elastomeric pad 5, is set between 12 inner wall of 10 side of pedestal and chamber shell
There is labyrinth flow-path 11, water dropper water inlet 2 passes through the pressure compensation opened up on pad hole, compensation runner water inlet 6 and pedestal 10
Channel 7 is connected to the water dropper water outlet 15 of water outlet extra-oral cavity 16 again after being connected to labyrinth flow-path 11.
Douche plug 1 includes plug back taper 3, and 3 lower part of plug back taper is connected with plug cone neck 4.
Douche plug 1 is single ellipse double circular jet line style douche plugs, the cross section of plug back taper 3 and plug cone neck 4
Streamline is single ellipse double circular jet linear curves, and the section that meets water of single ellipse double circular jet linear curves is elliptic curve, single ellipse double circular jet line styles
The flow section of curve is made of two sections of circular curve connections.
The detailed technology scheme of douche plug 1 is as follows:
A kind of ellipse double circular jet line style douche plugs of list, including plug back taper 3,3 upper surface of plug back taper offer plug
Water inlet, 3 lower surface of plug back taper are connected to plug cone neck 4, and the cross-sectional outling line of plug back taper 3 is single ellipse double circular jet line styles
Curve, the plane space area that wherein the single ellipse double circular jet linear curves 17 of the first of upper surface surround is minimum, and the second of lower end surface
The plane space area that single ellipse double circular jet linear curves 20 surround is maximum；The cross-sectional outling line that plug bores neck 4 is single ellipse double circles
Streamline curve, the plane space area phase that wherein plug of the upper surface and lower end surface cone ellipse double circular jet linear curves of neck list surround
Together.
It is as shown in Figure 5:
Plug back taper 3 is obtained by following steps:
Step 1: combining to obtain second single ellipse double circular jet linear curves 20 by mathematic(al) representation；
Step 2: the point on the basis of the central point A of second single ellipse double circular jet linear curves 20 sets up rectangular coordinate system, by the
Two single ellipse double circular jet linear curves 20 reduce n times, 0 < n < 1, obtain first single ellipse double circular jet linear curves 17, if first is single ellipse
The central point of double circular jet linear curves 17 is A '；
Step 3: by the first upward vertical travel distance h of single ellipse double circular jet linear curves 17, connecting the central point of two curves
AA'；
Step 4: taking first single ellipse double circular jet linear curves 17 as the upper surface of plug back taper 3, with second single ellipse double circular jets
Linear curve 20 obtains plug back taper by setting-out with the central point AA ' of two curves for path for the lower end surface of plug back taper 3
3。
Plug cone neck 4 is obtained by following steps:
Step 1: combining to obtain second single ellipse double circular jet linear curves 20 by mathematic(al) representation；
Step 2: the point on the basis of the central point A of second single ellipse double circular jet linear curves 20 sets up rectangular coordinate system, by the
Two single ellipse double circular jet linear curves 20 reduce m times, and 0.6≤m≤0.8 obtains the plug cone ellipse double circular jet linear curves of neck list, will insert
The ellipse double circular jet linear curves of nose cone neck list carry out stretched vertically and obtain single ellipse double circular jet line style douche plug cone necks 7.
It is as shown in Figure 6:
Second single ellipse double circular jet linear curves 20 planar set two it is orthogonal, intersection point for A point number axis,
Wherein horizontal axis is X-axis, and the longitudinal axis is Y-axis, this is XOY rectangular coordinate system, by second single ellipse double circular jet linear curves 20 and the right angle XAY
The intersection point of coordinate system is respectively defined as 1 ', 2 ', 3 ', 4 ' points；Wherein:
Second single ellipse double circular jet linear curves 20 are by 1 ' -4 ' -3 ' head of section curve 1 ' -2 ' -3 ' and flow section curve that meets water
Tail connects the ellipse double circular jet linear curves of the list to be formed；
Section curve 1 ' -2 ' -3 ' that meets water is elliptic curve；
Flow section curve 1 ' -4 ' -3 ' is made of circular curve 1 ' -4 ' and the connection of circular curve 3 ' -4 '.
Meet water the equation of section curve 1 ' -2 ' -3 ' are as follows:
a2y2+b2x2=a2b2
In formula, a is oval major semiaxis, unit: mm；B is oval semi-minor axis, unit: mm；A value range are as follows: 1≤a≤
10；B value range are as follows: 1≤b≤8；a≥b；X is the abscissa of oval arbitrary point, and y is the ordinate of oval arbitrary point；-a≤x
≤ 0 ,-b≤y≤b.
The equation of circular curve 1 ' -4 ' are as follows:
x2+(y+R-b)2=R2
In formula, b is ellipse short shaft semiaxis, unit: mm；R is radius of circle, unit: mm, R value range are as follows: 2≤R≤20；R
>b；X is the abscissa of 1-4 equation of a circle arbitrary point, and y is the ordinate of 1-4 equation of a circle arbitrary point, x >=0, y >=0.
The equation of circular curve 3 ' -4 ' are as follows:
x2+(y-R+b)2=R2
In formula, b is oval semi-minor axis, unit: mm；R is radius of circle, unit: mm, R value range are as follows: 2≤R≤20；R >
b；X is the abscissa of 3-4 equation of a circle arbitrary point, and y is the ordinate of 3-4 equation of a circle arbitrary point, x >=0, y≤0.
12 inner wall of chamber shell is provided with support ring 13, and 5 upper surface of elastomeric pad is matched with support ring 13, elastomeric pad 5
Pad hole is connected to by support ring 13 with water dropper water inlet 2.
Pressure compensation runner 7 leads to 10 side wall of pedestal, and the labyrinth flow-path entrance 8 with labyrinth flow-path 11 from 10 center of pedestal
Connection.
Labyrinth flow-path 11 is the labyrinth flow-path of square flow path of gear profile form, and outlet goes out circulation road 9 by pedestal and goes out with water dropper
The mouth of a river 15 is connected to.
The elastomeric pad 5 used in above-described embodiment one and embodiment two is preferably elastomeric pad made of silica gel material.
Embodiment three
Fig. 7 and Fig. 8 gives streamlined douche plug and pyramid type douche plug water flow streamline distribution figure nearby, from
It can be seen that in Fig. 7 and Fig. 8, the water-flow equation of streamlined douche plug is more evenly.Near plug upstream face, two plug low speed
Area's distributional difference is unobvious, and streamlined douche plug flow velocity is slightly less than pyramid type douche plug.Near plug flow section,
Two plug velocity flow profile differences are obvious, and water flow is not separated with side wall always after flowing through streamlined plug, attached in plug flow section
Closely, almost do not occur any low speed whirlpool area.For pyramid type douche plug, after water flow reaches flow section, both with plug
Side wall separation, and there is apparent low speed whirlpool area in flow section downstream, lead to pyramid type douche plug local head loss
Increase.Fig. 9 and Figure 10 gives streamlined douche plug and pyramid type douche plug flow turbulence intensity distribution map nearby,
It can be seen that from Fig. 9 and Figure 10, nearby turbulence intensity is stronger for the more streamlined douche plug flow section of pyramid type douche plug, point
Cloth range is wider, and the energy of capillary flow consumption is more, and water dropper local head loss is bigger.
To examine streamlined water dropper anti-clogging, two kinds of douches are subjected to short cycle interval loaded on test platform and are poured water examination
It tests.Natural seasoning soil is selected, 200 mesh sievings processing is carried out, obtains the sand-like less than 0.076mm, selected sand-like is put into water
In, the arsenicbearing gold ores of configuration 0.5g/L concentration carry out irrigation tests.It pours water 10 minutes every time, cuts off the water 30 minutes, be repeated 10 times, measure
Final douche flow, and compared with initial flow.Test result such as table 1, as can be seen from Table 1, flow of the invention
Variation is smaller compared with pyramid type plug-in type pressure compensation douche, shows that there is the present invention certain resisting to block up effect.
The streamlined plug-in type pressure compensation douche of table 1 and pyramid type plug-in type pressure compensation douche anti-clogging compare
The above embodiments are only the preferred technical solution of the present invention, and are not construed as limitation of the invention, this Shen
Please in embodiment and embodiment in feature in the absence of conflict, can mutual any combination.Protection model of the invention
The technical solution that should be recorded with claim is enclosed, the equivalent replacement side of technical characteristic in the technical solution recorded including claim
Case is protection scope.Equivalent replacement i.e. within this range is improved, also within protection scope of the present invention.
Claims (7)
1. a kind of streamlined plug-in type pressure compensation douche, the douche plug (1) including having water dropper water inlet (2),
Be characterized in that: douche plug (1) lower part is from top to bottom connected with chamber shell (12) and water outlet extra-oral cavity (16), chamber shell (12) in turn
It is inside provided with pedestal (10), is provided between pedestal (10) upper surface and chamber shell (12) water dropper cavity (14), water dropper cavity (14)
It is interior to be equipped with elastomeric pad (5), the pad hole being connected with compensation runner water inlet (6), pedestal are offered on elastomeric pad (5)
(10) labyrinth flow-path (11) are equipped between side and chamber shell (12) inner wall, water dropper water inlet (2) is entered by pad hole, compensation runner
The pressure compensation channel (7) opened up on the mouth of a river (6) and pedestal (10) be connected to labyrinth flow-path (11) after again with water outlet extra-oral cavity
(16) water dropper water outlet (15) connection.
2. streamlined plug-in type pressure compensation douche according to claim 1, it is characterised in that: douche plug (1)
Including plug back taper (3), plug back taper (3) lower part is connected with plug cone neck (4).
3. streamlined plug-in type pressure compensation douche according to claim 2, it is characterised in that: douche plug (1)
For single ellipse double streamlined douche plugs of throwing, the cross section streamline of plug back taper (3) and plug cone neck (4) is single ellipse double throwing streams
Linear curve, single ellipse double sections that meet water for throwing streamline curve are elliptic curve, and single ellipse double flow sections for throwing streamline curve are by two
Section parabolic curve connection composition.
4. streamlined plug-in type pressure compensation douche according to claim 2, it is characterised in that: douche plug (1)
For single ellipse double circular jet line style douche plugs, the cross section streamline of plug back taper (3) and plug cone neck (4) is single ellipse double circular jets
The section that meets water of linear curve, single ellipse double circular jet linear curves is elliptic curve, and the flow section of single ellipse double circular jet linear curves is by two
Section circular curve connection composition.
5. streamlined plug-in type pressure compensation douche according to claim 1, it is characterised in that: chamber shell (12) inner wall is set
Be equipped with support ring (13), elastomeric pad (5) upper surface is matched with support ring (13), the pad hole of elastomeric pad (5) with pass through
Support ring (13) is connected to water dropper water inlet (2).
6. streamlined plug-in type pressure compensation douche according to claim 1, it is characterised in that: pressure compensation runner
(7) lead to pedestal (10) side wall from pedestal (10) center, and be connected to the labyrinth flow-path entrance (8) of labyrinth flow-path (11).
7. streamlined plug-in type pressure compensation douche according to claim 1, it is characterised in that: labyrinth flow-path (11) is
The labyrinth flow-path of square flow path of gear profile form, outlet go out circulation road (9) by pedestal and are connected to water dropper water outlet (15).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910755320.0A CN110367090B (en) | 2019-08-15 | 2019-08-15 | Streamline plug-in pressure compensation irrigator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910755320.0A CN110367090B (en) | 2019-08-15 | 2019-08-15 | Streamline plug-in pressure compensation irrigator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113841590A (en) * | 2021-10-27 | 2021-12-28 | 三峡大学 | External patch type variable flow channel anti-blocking drip irrigation tape and anti-blocking drip irrigation method |
| CN115067183A (en) * | 2022-07-06 | 2022-09-20 | 中国农业科学院农业环境与可持续发展研究所 | Self-flushing variable irrigator and application thereof |
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| CN102527532B (en) * | 2012-01-11 | 2014-05-14 | 西北农林科技大学 | High-flow pressure-compensated drip irrigation emitter |
| KR101962256B1 (en) * | 2017-08-28 | 2019-03-26 | 주식회사 남경 | Drip emitter |
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| CN102527532B (en) * | 2012-01-11 | 2014-05-14 | 西北农林科技大学 | High-flow pressure-compensated drip irrigation emitter |
| KR101962256B1 (en) * | 2017-08-28 | 2019-03-26 | 주식회사 남경 | Drip emitter |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113841590A (en) * | 2021-10-27 | 2021-12-28 | 三峡大学 | External patch type variable flow channel anti-blocking drip irrigation tape and anti-blocking drip irrigation method |
| CN113841590B (en) * | 2021-10-27 | 2023-03-31 | 三峡大学 | External patch type variable flow channel anti-blocking drip irrigation tape and anti-blocking drip irrigation method |
| CN115067183A (en) * | 2022-07-06 | 2022-09-20 | 中国农业科学院农业环境与可持续发展研究所 | Self-flushing variable irrigator and application thereof |
| CN115067183B (en) * | 2022-07-06 | 2023-03-10 | 中国农业科学院农业环境与可持续发展研究所 | Self-flushing variable irrigator and application thereof |
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| CN110367090B (en) | 2021-08-31 |
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