CN110651690A - Angle-adjustable rotary rocker arm type high-pressure sprinkling irrigation spray head - Google Patents
Angle-adjustable rotary rocker arm type high-pressure sprinkling irrigation spray head Download PDFInfo
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- CN110651690A CN110651690A CN201910870328.1A CN201910870328A CN110651690A CN 110651690 A CN110651690 A CN 110651690A CN 201910870328 A CN201910870328 A CN 201910870328A CN 110651690 A CN110651690 A CN 110651690A
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- fixedly connected
- adjusting
- rocker arm
- far away
- spray head
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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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- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion
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- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Environmental Sciences (AREA)
- Nozzles (AREA)
Abstract
The invention discloses an angle-adjustable rotary rocker arm type high-pressure spray irrigation nozzle which comprises an installation bottom plate, wherein a water supply pipe is fixedly connected at the middle position of the top of the installation bottom plate, shock absorption protection devices are fixedly connected at two sides of the water supply pipe at the top of the installation bottom plate, an adjusting support plate is fixedly connected at one side of the shock absorption protection devices, which is far away from the installation bottom plate, a telescopic adjusting pipe is fixedly connected at the middle position of one side of the adjusting support plate, which is far away from the shock absorption protection devices, and angle adjusting devices are fixedly connected at symmetrical positions of two sides of the telescopic adjusting pipe, and a nozzle main pipe is movably connected at the middle position of one side of a protection top plate, which is far away from the. The angle of the high-pressure sprinkling irrigation nozzle is adjusted, so that the irrigation area is enlarged, the irrigation effect is guaranteed, the usability and market competitiveness are enlarged, meanwhile, the safety of the effective protection equipment is guaranteed, and the service life is prolonged.
Description
Technical Field
The invention relates to the technical field of sprinkling irrigation devices, in particular to an angle-adjustable rotary rocker arm type high-pressure sprinkling irrigation spray head.
Background
At present, rotary nozzles used in the market are of two types, the first type is a rocker arm rotary nozzle designed based on the mechanical principle, and the second type is a jet flow rotary nozzle designed based on the fluid mechanics principle; the working principle of the rotation of the rocker arm type spray head is that water flow ejected from a main spray hole impacts the rocker arm to move to one side, then the rocker arm moves back under the action of a return spring and beats the spray head to rotate by one step, the rocker arm is positioned at the position of the spray hole and moves again under the impact of the water flow, the rocker arm moves back under the action of the return spring and beats the spray head to rotate by one step, so that the spray head does reciprocating mechanical motion, the spray head rotates after stopping one step by one step, and water ejected from the spray hole of the rocker arm type spray head impacts the rocker arm to do work is an energy-consuming process, and about 30% of energy in the water spraying work doing process is consumed to drive the spray head to rotate. The existing rocker arm type spray head only can spray in a certain range, and the spray irrigation angle cannot be effectively adjusted, so that the spray irrigation range is limited.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides an angle-adjustable rotary rocker arm type high-pressure sprinkling irrigation spray head, which solves the problem that the existing rocker arm type spray head only can spray within a certain range, and can not effectively adjust the sprinkling irrigation angle, so that the sprinkling irrigation range is limited.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: an angle-adjustable rotary rocker arm type high-pressure sprinkling irrigation spray head comprises a mounting base plate, a water supply pipe is fixedly connected at the middle position of the top of the mounting base plate, shock absorption protection devices are fixedly connected at the two sides of the water supply pipe at the top of the mounting base plate, an adjusting support plate is fixedly connected at one side of the shock absorption protection devices far away from the mounting base plate, a telescopic adjusting pipe is fixedly connected at the middle position of one side of the adjusting support plate far away from the shock absorption protection devices, an angle adjusting device is fixedly connected at one side of the adjusting support plate far away from the shock absorption protection devices and at the symmetrical positions of the two sides of the telescopic adjusting pipe, a protection top plate is fixedly connected at one side of the angle adjusting device far away from the adjusting support plate, a spray head main pipe is movably connected at, the sprayer is characterized in that a sprayer is fixedly connected to one end, far away from the protective top plate, of the sprayer main pipe, a guide pillar is fixedly connected to the middle position of one side, far away from the auxiliary spring, of the sprayer, a rocker arm rod is rotatably connected to the bottom of the outer surface of the guide pillar, a reset spring is sleeved on the outer surface, far away from the sprayer, of the guide pillar, and a guide block is fixedly connected to one side, close to a sprayer water outlet, of the rocker arm rod.
Preferably, the bottom of the water supply pipe penetrates through the mounting base plate and extends to the bottom of the mounting base plate, and one end, far away from the mounting base plate, of the water supply pipe is communicated with the telescopic adjusting pipe.
Preferably, the damping protection device comprises an elastic inner ring, a plurality of elastic guide pillars are fixedly connected to the outer surface of the elastic inner ring, the elastic guide pillars are uniformly distributed, a damping spring is sleeved on one side, close to the elastic inner ring, of the outer surface of each elastic guide pillar, and an elastic outer ring is fixedly connected to one side, far away from the elastic inner ring, of each damping spring.
Preferably, the bottom of the telescopic adjusting pipe penetrates through the adjusting support plate and extends to the bottom of the adjusting support plate, and one end, far away from the adjusting support plate, of the telescopic adjusting pipe is communicated with the spray head main pipe.
Preferably, the angle adjusting device comprises an adjusting box, one side of the top of the inner cavity of the adjusting box is rotatably connected with a worm wheel, the inner surface of the worm wheel is in threaded connection with an adjusting rod, the outer surface of the worm wheel is meshed with a worm, and the worm is located at one end of the outer wall of the adjusting box and fixedly connected with an adjusting disc.
Preferably, the adjusting rod penetrates through the adjusting box and extends to the top of the adjusting box, one end, located at the top of the adjusting box, of the adjusting rod is rotatably connected with the protective top plate, the worm penetrates through the adjusting box and extends to the outer wall of the adjusting box, and one end, located at the inner cavity of the adjusting box, of the worm is rotatably connected with the adjusting box.
Preferably, the bottom of the spray head main pipe penetrates through the protective top plate and extends to the bottom of the protective top plate, and the outer surface of the spray head main pipe is in threaded connection with the protective top plate.
Preferably, one end of the spray head main pipe, which is far away from the protective top plate, is communicated with the spray head, and one side of the rocker arm rod, which is far away from the guide block, is fixedly connected with the arm support.
Preferably, one side of the return spring, which is far away from the rocker arm rod, is fixedly connected with the arm support, and two ends of the arm support, which are far away from the guide post, are fixedly connected with the spray head.
Preferably, one side of the guide block close to the rocker arm rod is connected with the spray head in a sliding mode, and the bottom of the return spring is movably connected with the rocker arm rod.
(III) advantageous effects
The invention provides an angle-adjustable rotary rocker arm type high-pressure sprinkling irrigation spray head, which has the following beneficial effects:
the invention is characterized in that a water supply pipe is fixedly connected with the middle position of the top of an installation bottom plate, shock absorption protection devices are fixedly connected with the top of the installation bottom plate at two sides of the water supply pipe, an adjusting support plate is fixedly connected with one side of the shock absorption protection device far away from the installation bottom plate, a telescopic adjusting pipe is fixedly connected with the middle position of one side of the adjusting support plate far away from the shock absorption protection devices, an angle adjusting device is fixedly connected with one side of the adjusting support plate far away from the shock absorption protection devices and at the symmetrical positions of two sides of the telescopic adjusting pipe, a protection top plate is fixedly connected with one side of the angle adjusting device far away from the adjusting support plate, a main spray head pipe is movably connected with the middle position of one side of the protection top plate far away from the angle adjusting devices, an auxiliary, the device can effectively adjust the angle of the high-pressure spray irrigation nozzle, thereby enlarging the irrigation area of the device and ensuring the irrigation effect, thereby enlarging the usability and market competitiveness of the device, and simultaneously effectively protecting equipment safety and prolonging the service life.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of the shock absorbing protection device of the present invention;
fig. 3 is a schematic structural view of the angle adjusting device of the present invention.
In the figure: 1-mounting bottom plate, 2-water supply pipe, 3-damping protection device, 31-elastic inner ring, 32-elastic guide post, 33-damping spring, 34-elastic outer ring, 4-adjusting support plate, 5-telescopic adjusting pipe, 6-angle adjusting device, 61-adjusting box, 62-worm wheel, 63-adjusting rod, 64-worm, 65-adjusting disk, 7-protecting top plate, 8-spray head main pipe, 9-auxiliary spring, 10-spray head, 11-guide post, 12-rocker arm rod, 13-reset spring, 14-arm support and 15-guide block.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: an angle-adjustable rotary rocker arm type high-pressure sprinkling irrigation nozzle comprises an installation bottom plate 1, a water supply pipe 2 is fixedly connected at the middle position of the top of the installation bottom plate 1, shock absorption protection devices 3 are fixedly connected at the two sides of the water supply pipe 2 at the top of the installation bottom plate 1, an adjusting support plate 4 is fixedly connected at one side of the shock absorption protection devices 3 far away from the installation bottom plate 1, a telescopic adjusting pipe 5 is fixedly connected at the middle position of one side of the adjusting support plate 4 far away from the shock absorption protection devices 3, angle adjusting devices 6 are fixedly connected at the symmetrical positions of the two sides of the telescopic adjusting pipe 5 at the side of the adjusting support plate 4, a protective top plate 7 is fixedly connected at one side of the angle adjusting device 6 far away from the adjusting support plate 4, a nozzle main pipe 8 is movably connected at the middle position of one side of the protective top plate 7, the one end fixedly connected with shower nozzle 10 that protection roof 7 was kept away from to shower nozzle person in charge 8, one side intermediate position fixedly connected with guide pillar 11 that auxiliary spring 9 was kept away from to shower nozzle 10, guide pillar 11 surface bottom rotates and is connected with rocking arm pole 12, and the cover that the guide pillar 11 surface lies in guide pillar 11 surface top is equipped with reset spring 13, and the one end fixedly connected with cantilever crane 14 that shower nozzle 10 was kept away from to guide pillar 11, one side fixedly connected with guide block 15 that rocking arm pole 12 is close to the shower nozzle 10 delivery.
The bottom of the water supply pipe 2 penetrates through the mounting base plate 1 and extends to the bottom of the mounting base plate 1, and one end, far away from the mounting base plate 1, of the water supply pipe 2 is communicated with the telescopic adjusting pipe 5.
The shock absorption protection device 3 comprises an elastic inner ring 31, a plurality of elastic guide pillars 32 are fixedly connected to the outer surface of the elastic inner ring 31, the elastic guide pillars 32 are uniformly distributed, a shock absorption spring 33 is sleeved on one side, close to the elastic inner ring 31, of the outer surface of each elastic guide pillar 32, and an elastic outer ring 34 is fixedly connected to one side, far away from the elastic inner ring 31, of each shock absorption spring 33, on the outer surface of each elastic guide pillar 32.
The bottom of the telescopic adjusting pipe 5 penetrates through the adjusting support plate 4 and extends to the bottom of the adjusting support plate 4, and one end, far away from the adjusting support plate 4, of the telescopic adjusting pipe 5 is communicated with the spray head main pipe 8.
The angle adjusting device 6 comprises an adjusting box 61, a worm wheel 62 is rotatably connected to one side of the top of the inner cavity of the adjusting box 61, an adjusting rod 63 is connected to the inner surface of the worm wheel 62 in a threaded manner, a worm 64 is meshed with the outer surface of the worm wheel 62 in a transmission manner, and the worm 64 is located at one end of the outer wall of the adjusting box 61 and is fixedly connected with an adjusting disc 65.
The adjusting rod 63 penetrates through the adjusting box 61 and extends to the top of the adjusting box 61, one end, located at the top of the adjusting box 61, of the adjusting rod 63 is rotatably connected with the protective top plate 7, the worm 64 penetrates through the adjusting box 61 and extends to the outer wall of the adjusting box 61, and one end, located at the inner cavity of the adjusting box 61, of the worm 64 is rotatably connected with the adjusting box 61.
The bottom of the spray head main pipe 8 penetrates through the protective top plate 7 and extends to the bottom of the protective top plate 7, and the outer surface of the spray head main pipe 8 is in threaded connection with the protective top plate 7.
One end of the spray head main pipe 8 far away from the protective top plate 7 is communicated with the spray head 10, and one side of the rocker arm rod 12 far away from the guide block 15 is fixedly connected with the arm support 14.
One side of the return spring 13 far away from the rocker arm 12 is fixedly connected with an arm support 14, and two ends of the arm support 14 far away from the guide post 11 are fixedly connected with the spray head 10.
One side of the guide block 15 close to the rocker arm rod 12 is connected with the spray head 10 in a sliding way, and the bottom of the return spring 13 is movably connected with the rocker arm rod 12.
The device can effectually adjust the angle of high pressure sprinkling irrigation shower nozzle to enlarge its irrigation area, guarantee the irrigation effect, thereby enlarge its usability and market competitiveness, effectual protective apparatus's safety, increase of service life simultaneously.
During the use, be responsible for 8 with the shower nozzle and carry out threaded connection with protection roof 7, and be connected water supply pipe 2 bottom and water source, with water supply pipe 2, scalable control pipe 5 and shower nozzle are responsible for 8 and communicate each other, and carry out fixed installation with mounting plate 1, later rotate adjustment disk 65 and make worm 64 rotate, make worm wheel 63 rotate through the meshing transmission, make through threaded connection and adjust pole 63 and adjust, thereby change the angle of pitching of shower nozzle 10, later pass through shower nozzle 10 blowout through water pressure, thereby strike guide block 15 and make rocking arm pole 12 drive shower nozzle 10 and rotate, later reset through reset spring 13, thereby accomplish the sprinkling irrigation.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The phrase "comprising a defined element does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides an angularly adjustable rotatory rocking arm formula high pressure sprinkling irrigation shower nozzle, includes mounting plate (1), its characterized in that: a water supply pipe (2) is fixedly connected to the middle position of the top of the mounting base plate (1), shock absorption protection devices (3) are fixedly connected to the two sides of the water supply pipe (2) at the top of the mounting base plate (1), an adjusting support plate (4) is fixedly connected to one side, far away from the mounting base plate (1), of the shock absorption protection devices (3) at the top of the mounting base plate (1), a telescopic adjusting pipe (5) is fixedly connected to the middle position of one side, far away from the shock absorption protection devices (3), of the adjusting support plate (4) and angle adjusting devices (6) are fixedly connected to the symmetrical positions of the two sides of the telescopic adjusting pipe (5), a protective top plate (7) is fixedly connected to one side, far away from the adjusting support plate (4), of the angle adjusting device (6) at the angle adjusting device (6), and a spray head main pipe (8) is movably, the outer surface of the spray head main pipe (8) is sleeved with an auxiliary spring (9) at one side far away from the protective top plate (7), the spray head main pipe (8) is fixedly connected with a spray head (10) at one end far away from the protective top plate (7), the spray head (10) is fixedly connected with a guide pillar (11) at the middle position of one side far away from the auxiliary spring (9), the bottom of the outer surface of the guide pillar (11) is rotatably connected with a rocker arm rod (12), the outer surface of the guide pillar (11) is sleeved with a reset spring (13) above the outer surface of the guide pillar (11), one end of the guide pillar (11) far away from the spray head (10) is fixedly connected with an arm support (14), and the rocker arm rod (.
2. The angle adjustable rotary rocker arm type high pressure sprinkler head of claim 1, wherein: the bottom of the water supply pipe (2) penetrates through the mounting base plate (1) and extends to the bottom of the mounting base plate (1), and one end, far away from the mounting base plate (1), of the water supply pipe (2) is communicated with the telescopic adjusting pipe (5).
3. The angle adjustable rotary rocker arm type high pressure sprinkler head of claim 1, wherein: the damping protection device (3) comprises an elastic inner ring (31), a plurality of elastic guide pillars (32) are fixedly connected to the outer surface of the elastic inner ring (31), the elastic guide pillars (32) are uniformly distributed, a damping spring (33) is sleeved on one side, close to the elastic inner ring (31), of the outer surface of each elastic guide pillar (32), and an elastic outer ring (34) is fixedly connected to one side, far away from the elastic inner ring (31), of each damping spring (33) on the outer surface of each elastic guide pillar (32).
4. The angle adjustable rotary rocker arm type high pressure sprinkler head of claim 1, wherein: the bottom of the telescopic adjusting pipe (5) penetrates through the adjusting support plate (4) and extends to the bottom of the adjusting support plate (4), and one end, away from the adjusting support plate (4), of the telescopic adjusting pipe (5) is communicated with the spray head main pipe (8).
5. The angle adjustable rotary rocker arm type high pressure sprinkler head of claim 1, wherein: angle adjusting device (6) are including regulating box (61), regulating box (61) inner chamber top one side is rotated and is connected with worm wheel (62), worm wheel (62) internal surface threaded connection has regulation pole (63), worm wheel (62) surface meshing transmission has worm (64), worm (64) are located one end fixedly connected with adjusting plate (65) of regulating box (61) outer wall.
6. The angle adjustable rotary rocker arm type high pressure sprinkler head of claim 5, wherein: adjust pole (63) and run through adjusting case (61) and extend to adjusting case (61) top, adjust the one end that pole (63) are located adjusting case (61) top and rotate with protection roof (7) and be connected, worm (64) run through adjusting case (61) and extend to adjusting case (61) outer wall, worm (64) are located the one end of adjusting case (61) inner chamber and are rotated with adjusting case (61) and be connected.
7. The angle adjustable rotary rocker arm type high pressure sprinkler head of claim 1, wherein: the bottom of the spray head main pipe (8) penetrates through the protective top plate (7) and extends to the bottom of the protective top plate (7), and the outer surface of the spray head main pipe (8) is in threaded connection with the protective top plate (7).
8. The angle adjustable rotary rocker arm type high pressure sprinkler head of claim 1, wherein: one end of the spray head main pipe (8) far away from the protective top plate (7) is communicated with the spray head (10), and one side of the rocker arm rod (12) far away from the guide block (15) is fixedly connected with the arm support (14).
9. The angle adjustable rotary rocker arm type high pressure sprinkler head of claim 1, wherein: one side of the return spring (13) far away from the rocker arm rod (12) is fixedly connected with an arm support (14), and two ends of the arm support (14) far away from the guide post (11) are fixedly connected with the spray head (10).
10. The angle adjustable rotary rocker arm type high pressure sprinkler head of claim 1, wherein: one side of the guide block (15) close to the rocker arm rod (12) is connected with the spray head (10) in a sliding manner, and the bottom of the return spring (13) is movably connected with the rocker arm rod (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910870328.1A CN110651690A (en) | 2019-09-16 | 2019-09-16 | Angle-adjustable rotary rocker arm type high-pressure sprinkling irrigation spray head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910870328.1A CN110651690A (en) | 2019-09-16 | 2019-09-16 | Angle-adjustable rotary rocker arm type high-pressure sprinkling irrigation spray head |
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| Publication Number | Publication Date |
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| CN110651690A true CN110651690A (en) | 2020-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910870328.1A Pending CN110651690A (en) | 2019-09-16 | 2019-09-16 | Angle-adjustable rotary rocker arm type high-pressure sprinkling irrigation spray head |
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| CN (1) | CN110651690A (en) |
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| US9604231B1 (en) * | 2016-01-04 | 2017-03-28 | Cheng-An WANG | Impingement sprinkler |
| CN207340895U (en) * | 2017-08-27 | 2018-05-11 | 驻马店市永基塑胶制品有限公司 | A kind of field irrigation nozzle multi-purpose stand |
| CN207463482U (en) * | 2017-11-02 | 2018-06-08 | 北京京水旺源园林绿化工程有限公司 | A kind of Rocker arm spray head for adjustable angle of spraying water |
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2019
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1430051A (en) * | 2002-12-24 | 2003-07-16 | 中国水利水电科学研究院 | Durability test machine of rockerarm-type spray nozzle |
| CN201189498Y (en) * | 2008-02-20 | 2009-02-04 | 丁州 | Multi-purpose variable-shot full-automatic water-saving synergy spray-irrigation sprayer |
| CN201930872U (en) * | 2011-01-31 | 2011-08-17 | 广东达华节水科技股份有限公司 | Rocker arm spray nozzle for spray irrigation |
| CN102294309A (en) * | 2011-08-16 | 2011-12-28 | 西北农林科技大学 | Method for preparing elevation-adjustable rocker arm type irrigating spray head of flexible elbow pipe |
| US9604231B1 (en) * | 2016-01-04 | 2017-03-28 | Cheng-An WANG | Impingement sprinkler |
| CN205266523U (en) * | 2016-01-08 | 2016-06-01 | 黑龙江省农垦科学院经济作物研究所 | Oat field rail -engaging wind -force sprinkler |
| CN106000737A (en) * | 2016-07-28 | 2016-10-12 | 中国农业科学院农田灌溉研究所 | Mechanism capable of adjusting elevation angle of spray head and irrigation device with mechanism |
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