CN109699457A - Detachable pressure compensating emitter - Google Patents
Detachable pressure compensating emitter Download PDFInfo
- Publication number
- CN109699457A CN109699457A CN201910142869.2A CN201910142869A CN109699457A CN 109699457 A CN109699457 A CN 109699457A CN 201910142869 A CN201910142869 A CN 201910142869A CN 109699457 A CN109699457 A CN 109699457A
- Authority
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- China
- Prior art keywords
- gum cover
- tubular housing
- bar
- pressure regulation
- screw
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 75
- 230000002706 hydrostatic effect Effects 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims description 14
- 230000008676 import Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 230000002262 irrigation Effects 0.000 abstract description 21
- 238000003973 irrigation Methods 0.000 abstract description 21
- 238000000034 method Methods 0.000 abstract description 6
- 238000004140 cleaning Methods 0.000 abstract description 3
- 238000005406 washing Methods 0.000 abstract description 2
- 230000000903 blocking effect Effects 0.000 description 4
- 230000008021 deposition Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000003621 irrigation water Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 210000001320 hippocampus Anatomy 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The invention discloses a kind of detachable pressure compensating emitters being mounted on trickle irrigation blind pipe, including tubular housing, screw-shaped flow paths bar and elastic pressure regulation gum cover；The threaded connection of screw-shaped flow paths bar is installed in tubular housing, and elastic pressure regulation gum cover is installed between tubular outer casing inner wall and screw-shaped flow paths bar；Gasket is installed between tubular housing inner face and the water outlet end face of screw-shaped flow paths bar.Have the characteristics that simple structure, flowpath pressure compensation, uniform flow, operating cost are low.The key technical problem of solution is capable of washing inside water dropper, realization reuse.When work, water flow enters simultaneously has flow velocity by hydrostatic chamber and flow passage chamber, flow passage chamber that elastic pressure regulation gum cover is divided, hydrostatic chamber is without flow velocity, flow passage chamber hydraulic pressure is lower than hydrostatic chamber, and the wall of elastic pressure regulation gum cover achievees the purpose that stability of flow in flow velocity and runner basal area equilibrium process to runner indent.Screw-shaped flow paths bar and tubular housing are separable, realize the purpose of cleaning helical flow path and elastic pressure regulation gum cover.
Description
Technical field
The invention belongs to field irrigation technical fields, and in particular to a kind of detachable pressure being mounted on outside trickle irrigation blind pipe
Compensating drop irrigation head.
Background technique
Drip irrigation technique is the revolution of field irrigation technology, and the quality of water dropper decides the success or failure of trickle irrigation, while also determining
Determine to irrigate the yield of object and the quality of product.Water dropper is regulating system pressure, guarantees the core component of irrigation uniformity, section
Scholar is carrying out always the research of the structure and principle of water dropper.Currently, water dropper can be broadly divided into two classes from structure and function: one
Class is non-depressed compensation type, and another kind of is pressure-compensated；Two classes can also be divided to from mounting means, one kind is that internally-inlaid (is producing
Be fixed on trickle irrigation inside pipe wall at a certain distance in the process, form drip irrigation zone product), it is another kind of for external mounting type (the independent member of water dropper,
In field when pipe laying, water dropper spacing and quantity are determined as needed, perforating is installed on blind pipe).
In order to guarantee irrigation uniformity, currently, using pressure compensating emitter more.Since pressure compensating emitter structure is multiple
Miscellaneous, market product is mostly that seal construction cannot be dismantled, and belongs to the disposable products abandoned after blocking, and to irrigation water quality processing requirement
Height reduces the scope of application of trickle irrigation, increases cost of investment.In addition, replacement blocking dropping head will cause mounting hole loosening, it is bound to
Entire drip irrigation zone is needed replacing, economic loss is caused.Therefore, designing and develop detachable pressure compensating emitter has the valence of being applicable in
Value and market prospects.
Summary of the invention
The purpose of the present invention is to provide a kind of structures simply, convenient disassembly, prevents blocking, can automatically adjust runner pressure
Power, the detachable pressure compensating emitter for guaranteeing uniform flow, being mounted on outside trickle irrigation blind pipe.
In order to achieve the above objectives, the technical solution adopted by the present invention is that: a kind of detachable pressure compensating emitter, feature
Be: the water dropper includes tubular housing, screw-shaped flow paths bar and elastic pressure regulation gum cover；The threaded connection of screw-shaped flow paths bar is installed on
Elastic pressure regulation gum cover is installed in tubular housing, between tubular outer casing inner wall and screw-shaped flow paths bar；Tubular housing inner face and spiral shell
Gasket is installed between the water outlet end face of rotating runner bar.
Screw-shaped flow paths bar includes runner bar, and runner bar is rod-like cylindrical body, and runner rod outer surface is equipped with helical flow path, stream
Road bar one end is equipped with pop-up, the other end is equipped with collet；Pop-up central axes are equipped with sloping platform water inlet tap, and water inlet tap is equipped with water inlet；
Elastic pressure regulation gum cover, tubular outer casing inner wall and elastic pressure regulation gum cover outer wall are installed between tubular outer casing inner wall and runner rod outer surface
Between constitute hydrostatic chamber, flow passage chamber, water inlet and hydrostatic chamber, stream are constituted between runner rod outer surface and elastic pressure regulation gum cover inner wall
Road chamber is respectively communicated with；Collet is equipped with apopore, and apopore is connected with helical flow path；Pop-up is equipped with external screw thread, external screw thread and cylinder
The internal screw thread connection that shape housing open end is equipped with.
Tubular housing one end is equipped with opening, and tubular housing open end is equipped with internal screw thread, and the tubular housing other end is equipped with cylinder bottom,
Cylinder bottom is equipped with water outlet, and gasket is equipped between cylinder bottom and collet rear end face, and gasket is equipped with limbers, apopore, water flowing
Hole is corresponding with water outlet three position.
The present invention has the characteristics that simple structure, flowpath pressure compensation, uniform flow, operating cost are low, the key of solution
Technical problem is capable of washing inside water dropper, realization reuse.
The present invention is mounted on the hollow billet of droping irrigating pipe system, and when installation first punches on hollow billet, aperture and water dropper sloping platform
The diameter of water inlet tap is fitted close, and the sloping platform water inlet tap of water dropper is mounted in the hole accomplished fluently, and guarantees that sealing is water-tight.Work as irrigation
When, high pressure water flow enters hollow billet by pipe-line system, subsequently into the water inlet of water dropper, is then divided into two-way.Enter cylinder all the way
The hydrostatic chamber constituted between shape outer casing inner wall and elastic pressure regulation gum cover outer wall, forms No way out pressure water cavity；Another way enters stream
The flow passage chamber constituted between road rod outer surface and elastic pressure regulation gum cover inner wall, i.e. helical flow path, the water in flow passage chamber pass through collet
The apopore outflow being equipped with, irrigates farmland.It is quiet on the outside of elastic pressure regulation gum cover according to bernoulli principle during this
State water pressure is greater than the pressure of helical flow path on the inside of elastic pressure regulation gum cover, thus elastic pressure regulation gum cover under the action of pressure difference to
Helical flow path sunken inside plays the role of adjusting and irrigates flow so that reducing runner basal area increases flow passage resistance force of waterproof.When in water dropper
There are scale deposition or foreign matters from being blocked, helical flow path and elasticity can be cleaned by spiral separation screw-shaped flow paths bar and tubular housing
Pressure regulation gum cover, it is reusable after installation.
The present invention has automatic adjustment runner hydraulic pressure, guarantees the function of flow equalization；Meanwhile when runner foreign matters from being blocked or alkali
Dirt deposition is reused after disassembling cleaning, thus the technical issues of solving difficult irrigation water quality processing and emitter clogging.At present
The water dropper that domestic and international farmland drip irrigation system uses is internally-inlaid or pipe above formula sealing water dropper, is easy to happen in water dropper use process
Scale deposition or foreign matters from being blocked, need to be replaced frequently water dropper or drip irrigation zone, improve irrigation cost, affect irrigation quality, increase
Field maintenance management difficulty is added.Runner bar of the present invention and tubular housing use screw-type connection, and tubular housing can be from runner
Bar disassembly, meets foreign substance cleaning inside water dropper；The principle matched using helical flow path on bar with elastic pressure regulation gum cover, reaches stream
The stable target of speed realizes water dropper and repeats to be used for a long time.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the structural schematic diagram of screw-shaped flow paths bar；
Fig. 3 is the left view of Fig. 2；
Fig. 4 is the right view of Fig. 2；
Fig. 5 is the structural schematic diagram of tubular housing；
Fig. 6 is the left view of Fig. 5；
Fig. 7 is the right view of Fig. 5；
Fig. 8 is the structure chart of elastic pressure regulation gum cover；
Fig. 9 is the left view of Fig. 8；
Figure 10 is the facing structure figure of gasket.
In figure: 1-runner bar, 2-helical flow paths, 3-collets, 4-gum cover lower sealing rings, 5-apopores, 6-pop-ups,
7-gum cover upper sealing rings, 8-sloping platform water inlet taps, 9-water inlets, 10-diversion channels, 11-external screw threads, 12-tubular housings,
13-is open, 14-cylinder bottoms, 15-internal screw threads, 16-elastic pressure regulation gum covers, 17-gaskets, 18-limbers, 19-water outlets
Mouthful, 20-hydrostatic chambers, 21-flow passage chambers, 22-diversion channel imports, the outlet of 23-diversion channels, 24-radial apopores, 25-diameters
To inlet opening.
Specific embodiment
The invention will now be described in further detail with reference to the accompanying drawings.One kind provided by the invention is removable as shown in Figure 1:
Pressure compensating emitter is unloaded, which includes tubular housing 12, screw-shaped flow paths bar and elastic pressure regulation gum cover 16；Screw-shaped flow paths
Bar threaded connection is installed in tubular housing 12, and elastic pressure regulation gum cover is installed between 12 inner wall of tubular housing and screw-shaped flow paths bar
16, gasket 17 is installed between 12 inner face of tubular housing and the water outlet end face of screw-shaped flow paths bar.
Referring to Fig. 5, Fig. 6 and Fig. 7: 12 one end of tubular housing (water inlet end) is equipped with opening 13, and tubular housing open end is equipped with
Internal screw thread 15,12 other end of tubular housing (water outlet) are equipped with cylinder bottom 14, and cylinder bottom 14 is equipped with water outlet 19, cylinder bottom 14 and collet 3
Rear end face between install gasket 17；Referring to Figure 10；Gasket 17 is equipped with limbers 18, water outlet, the limbers of apopore 5
18 is corresponding with 19 three position of water outlet.
Referring to fig. 2, Fig. 3 and Fig. 4: screw-shaped flow paths bar includes runner bar 1, and runner bar 1 is rod-like cylindrical body, runner bar 1
Outer surface is equipped with helical flow path 2, and 1 one end of runner bar (water inlet end) is equipped with pop-up 6, the other end (water outlet) is equipped with collet 3；Pop-up
6 central axes are equipped with sloping platform water inlet tap 8, and sloping platform water inlet tap 8 is equipped with water inlet 9；12 inner wall of tubular housing and 1 outer surface of runner bar
Between elastic pressure regulation gum cover 16 is installed, constitute hydrostatic chamber 20, stream between 12 inner wall of tubular housing and elastic 16 outer wall of pressure regulation gum cover
Flow passage chamber 21 is constituted between 1 outer surface of road bar and elastic 16 inner wall of pressure regulation gum cover, water inlet 9 divides with hydrostatic chamber 20, flow passage chamber 21
It is not connected to；Collet 3 is equipped with apopore 5, and apopore 5 is connected with helical flow path 2, i.e., apopore 5 is connected with flow passage chamber 21；On
Support 6 is equipped with external screw thread 11, and external screw thread 11 is connect with the internal screw thread 15 that tubular housing open end is equipped with；Holding sealing is screwed, because being
Spiral interface, it is quick detachable and remove contamination when runner blocks.
Referring to fig. 2, Fig. 3: pop-up 6 is equipped with diversion channel 10, and diversion channel import 22 connects with water inlet 9, diversion channel outlet
23 are connected with hydrostatic chamber 20, and the helical flow path 2 for being bordering on pop-up 6 is equipped with radial apopore 24, radial apopore 24 and water inlet
Mouth 9 connects；Referring to fig. 4, the helical flow path 2 for being bordering on subiculum 3 is equipped with radial inlet opening 25, radial inlet opening 25 and apopore
5 connect.
Referring to Fig. 8 and Fig. 9: elastic pressure regulation gum cover 16 is the thin-wall circular tubular gum cover of open at both ends, is made by elastic material；
Referring to Fig. 1 and Fig. 2: being equipped with gum cover lower sealing ring 4 between helical flow path 2 and collet 3, installed between helical flow path 2 and pop-up 6
There is gum cover upper sealing ring 7, open at both ends and gum cover lower sealing ring 4, the gum cover upper sealing ring 7 of elastic pressure regulation gum cover 16 seal respectively
Installation.Helical flow path 2 is semicircle helical flow path 2.
Elastic pressure regulation gum cover of the invention will be divided into two chambers, i.e., hydrostatic chamber and bullet outside elastic pressure regulation gum cover in water dropper
Flow passage chamber in property pressure regulation gum cover.
In use, sloping platform water inlet tap is mounted on the hollow billet of droping irrigating pipe system, guarantee that sealing is water-tight, in drip irrigation pipe
Water just pass through water inlet 9 enter helical flow path 2.When irrigation, when the high pressure water in droping irrigating pipe enters water dropper by water inlet 9
After be divided into two-way；Diversion channel import 22, diversion channel 10, diversion channel outlet 23 are flowed through all the way, into tubular outer casing inner wall and elasticity
The hydrostatic chamber 20 constituted between pressure regulation gum cover outer wall forms No way out pressure water cavity；Another way enters from radial apopore 24 to flow
The flow passage chamber 21 constituted between road rod outer surface and elastic pressure regulation gum cover inner wall, the water in flow passage chamber flow through radial inlet opening 25,
The apopore 5 being equipped with from collet flows out, and irrigates farmland.When water dropper works, flow passage chamber water flow generates flow velocity, hydrostatic chamber stream
Speed is zero, and flow passage chamber hydraulic pressure is lower than hydrostatic chamber, and the elastic thin-wall of elastic pressure regulation gum cover reduces runner section to runner sunken inside
Product, pipe-line system pressure is bigger, and emitter flow channel flow velocity is faster, and the pressure difference of two chambers is also bigger, so as to cause elastic pressure regulation glue
The elastic thin-wall of set is deeper to runner sunken inside, and the diminution of runner basal area is bigger, in flow velocity and runner basal area equilibrium process
Achieve the purpose that stability of flow.When thering is scale to deposit in water dropper or foreign matter, when runner generates blocking, then water dropper is dismantled, cleared up different
Object is reused after assembling.
Claims (6)
1. a kind of detachable pressure compensating emitter, it is characterised in that: the water dropper includes tubular housing (12), screw-shaped flow paths bar
With elastic pressure regulation gum cover (16)；The threaded connection of screw-shaped flow paths bar is installed in tubular housing (12), tubular housing (12) inner wall
Elastic pressure regulation gum cover (16) is installed between screw-shaped flow paths bar；The water outlet of tubular housing (12) inner face and screw-shaped flow paths bar
Gasket (17) are installed between end face.
2. a kind of detachable pressure compensating emitter as described in claim 1, it is characterised in that: tubular housing (12) one end is set
Have open (13), tubular housing open end is equipped with internal screw thread (15), and tubular housing (12) other end is equipped with cylinder bottom (14), cylinder bottom
(14) water outlet (19) are equipped with.
3. a kind of detachable pressure compensating emitter as claimed in claim 2, it is characterised in that: screw-shaped flow paths bar includes stream
Road bar (1), runner bar (1) are rod-like cylindrical body, and runner bar (1) outer surface is equipped with helical flow path (2), and runner bar (1) one end is set
There are pop-up (6), the other end to be equipped with collet (3)；Pop-up (6) central axes are equipped with sloping platform water inlet tap (8), and sloping platform water inlet tap (8) is set
There are water inlet (9)；Elastic pressure regulation gum cover (16) is installed, outside tubular between tubular housing (12) inner wall and runner bar (1) outer surface
It covers and constitutes hydrostatic chamber (20) between (12) inner wall and elastic pressure regulation gum cover (16) outer wall, runner bar (1) outer surface and elastic pressure regulation
Flow passage chamber (21) are constituted between gum cover (16) inner wall, water inlet (9) is respectively communicated with hydrostatic chamber (20), flow passage chamber (21)；Collet
(3) apopore (5) are equipped with, apopore (5) is connected with helical flow path (2)；Pop-up (6) is equipped with external screw thread (11), external screw thread
(11) it is connect with the internal screw thread (15) that tubular housing open end is equipped with.
4. a kind of detachable pressure compensating emitter as claimed in claim 3, it is characterised in that: pop-up (6) is equipped with diversion channel
(10), diversion channel import (22) connects with water inlet (9), and diversion channel outlet (23) is connected with hydrostatic chamber (20), is bordering on
The helical flow path (2) of (6) is ask to be equipped with radial apopore (24), radial apopore (24) connects with water inlet (9)；It is bordering on down
The helical flow path (2) of (3) is ask to be equipped with radial inlet opening (25), radial inlet opening (25) connects with apopore (5).
5. a kind of detachable pressure compensating emitter as claimed in claim 4, it is characterised in that: helical flow path (2) and collet
(3) it is equipped between gum cover lower sealing ring (4), gum cover upper sealing ring (7), bullet is installed between helical flow path (2) and pop-up (6)
Property pressure regulation gum cover (16) open at both ends and gum cover lower sealing ring (4), gum cover upper sealing ring (7) seal installation respectively.
6. a kind of detachable pressure compensating emitter as claimed in claim 5, it is characterised in that: cylinder bottom (14) and collet (3)
Rear end face between install gasket (17)；Gasket (17) be equipped with limbers (18), apopore (5), limbers (18) with go out
The mouth of a river (19) three position is corresponding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910142869.2A CN109699457A (en) | 2019-02-26 | 2019-02-26 | Detachable pressure compensating emitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910142869.2A CN109699457A (en) | 2019-02-26 | 2019-02-26 | Detachable pressure compensating emitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109699457A true CN109699457A (en) | 2019-05-03 |
Family
ID=66265105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910142869.2A Pending CN109699457A (en) | 2019-02-26 | 2019-02-26 | Detachable pressure compensating emitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109699457A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112262741A (en) * | 2020-10-23 | 2021-01-26 | 山东省农业科学院作物研究所 | Drip irrigation tape drip irrigation pressure stabilizing and adjusting device |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1136993A (en) * | 1966-10-19 | 1968-12-18 | Cameron Irrigation Company Ltd | Improvements in and relating to nozzles for irrigation apparatus |
| US3998244A (en) * | 1975-08-08 | 1976-12-21 | Clarence Bentley | Drip irrigation valve with helical flow path |
| GB2009573A (en) * | 1977-12-12 | 1979-06-20 | Aid Agricolture Ind Dev | Self-Cleaning Constant Flow Rate Dripper |
| US4653695A (en) * | 1985-09-11 | 1987-03-31 | Drip Irrigation Systems, Ltd. | Pressure compensating drip irrigation emitter |
| US5111996A (en) * | 1991-02-27 | 1992-05-12 | Drip Irrigation Systems, Ltd. | Incremental pressure-compensating drip irrigation emitter |
| CN2420843Y (en) * | 2000-05-30 | 2001-02-28 | 刘刚 | External inserted eddy blocking-up-resisting water dropper |
| CN2638431Y (en) * | 2003-08-26 | 2004-09-08 | 国家节水灌溉杨凌工程技术研究中心 | Integrated internal pressure compensation type drip irrigation pipe |
| RU2311757C1 (en) * | 2006-03-31 | 2007-12-10 | Государственное научное учреждение Прикаспийский научно-исследовательский институт аридного земледелия Российской академии сельскохозяйственных наук | Drop irrigation apparatus |
| CN201871433U (en) * | 2010-11-20 | 2011-06-22 | 新疆天业（集团）有限公司 | Pressure-compensation dropper with high anti-blocking performance |
| CN102407194A (en) * | 2011-09-07 | 2012-04-11 | 高利强 | Flow channel length variable pressure compensation emitter |
| CN206866249U (en) * | 2017-05-31 | 2018-01-12 | 青岛农业大学 | Cylindrical drip irrigation tube and agricultural greenhouse system are inlayed outside pressure-compensated |
| CN209931110U (en) * | 2019-02-26 | 2020-01-14 | 甘肃省林业科学研究院 | Detachable pressure compensation type water dropper |
-
2019
- 2019-02-26 CN CN201910142869.2A patent/CN109699457A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1136993A (en) * | 1966-10-19 | 1968-12-18 | Cameron Irrigation Company Ltd | Improvements in and relating to nozzles for irrigation apparatus |
| US3998244A (en) * | 1975-08-08 | 1976-12-21 | Clarence Bentley | Drip irrigation valve with helical flow path |
| GB2009573A (en) * | 1977-12-12 | 1979-06-20 | Aid Agricolture Ind Dev | Self-Cleaning Constant Flow Rate Dripper |
| US4653695A (en) * | 1985-09-11 | 1987-03-31 | Drip Irrigation Systems, Ltd. | Pressure compensating drip irrigation emitter |
| US5111996A (en) * | 1991-02-27 | 1992-05-12 | Drip Irrigation Systems, Ltd. | Incremental pressure-compensating drip irrigation emitter |
| CN2420843Y (en) * | 2000-05-30 | 2001-02-28 | 刘刚 | External inserted eddy blocking-up-resisting water dropper |
| CN2638431Y (en) * | 2003-08-26 | 2004-09-08 | 国家节水灌溉杨凌工程技术研究中心 | Integrated internal pressure compensation type drip irrigation pipe |
| RU2311757C1 (en) * | 2006-03-31 | 2007-12-10 | Государственное научное учреждение Прикаспийский научно-исследовательский институт аридного земледелия Российской академии сельскохозяйственных наук | Drop irrigation apparatus |
| CN201871433U (en) * | 2010-11-20 | 2011-06-22 | 新疆天业（集团）有限公司 | Pressure-compensation dropper with high anti-blocking performance |
| CN102407194A (en) * | 2011-09-07 | 2012-04-11 | 高利强 | Flow channel length variable pressure compensation emitter |
| CN206866249U (en) * | 2017-05-31 | 2018-01-12 | 青岛农业大学 | Cylindrical drip irrigation tube and agricultural greenhouse system are inlayed outside pressure-compensated |
| CN209931110U (en) * | 2019-02-26 | 2020-01-14 | 甘肃省林业科学研究院 | Detachable pressure compensation type water dropper |
Non-Patent Citations (1)
| Title |
|---|
| 赵德菱等: "DL型螺纹式滴头的研制", 节水灌溉, no. 05, pages 26 - 28 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112262741A (en) * | 2020-10-23 | 2021-01-26 | 山东省农业科学院作物研究所 | Drip irrigation tape drip irrigation pressure stabilizing and adjusting device |
| CN112262741B (en) * | 2020-10-23 | 2023-02-28 | 山东省农业科学院作物研究所 | Drip irrigation tape drip irrigation pressure stabilizing and adjusting device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20190503 |