CN110771408B - Irrigation device for large cherries - Google Patents
Irrigation device for large cherries Download PDFInfo
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- CN110771408B CN110771408B CN201911079877.3A CN201911079877A CN110771408B CN 110771408 B CN110771408 B CN 110771408B CN 201911079877 A CN201911079877 A CN 201911079877A CN 110771408 B CN110771408 B CN 110771408B
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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
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/24—Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like
- A01G9/247—Watering arrangements
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- 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
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
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Abstract
The invention discloses an irrigation device for large cherries, and particularly relates to the technical field of irrigation, wherein the irrigation device comprises a bearing bottom plate, wherein an irrigation mechanism is arranged at the top end of a telescopic rod; irrigation mechanism includes the cavity plectane, the fixed first pipeline that is equipped with in cavity plectane top, the fixed a plurality of shower nozzles and two connecting pipes that are equipped with in cavity plectane outer end, the connecting pipe is established at the shower nozzle inboard, inside the cavity plectane was extended into to connecting pipe one end, the fixed atomizer that is equipped with in connecting pipe other end, the inside bull stick that is equipped with of cavity plectane, the bull stick both ends all pass the cavity plectane and extend the cavity plectane outside, the bull stick passes through sealed bearing swing joint with the cavity plectane, the bull stick both ends are all fixed and are equipped with the flabellum, the fla. The invention does not need to be held by hands by an external water pipe for irrigation, thereby effectively reducing the labor intensity of personnel.
Description
Technical Field
The invention relates to the technical field of irrigation, in particular to an irrigation device for large cherries.
Background
The large cherry is a rosaceous and prunus plant, the fruit tree species with the earliest fruit maturity are generated after the Chinese cherry is relayed by a deciduous fruit tree in northern China, the traditional Chinese medicine and pharmacy think that the large cherry has the functions of regulating middle energizer, tonifying qi and dispelling wind and dampness, agricultural experts call that the production of the large cherry is actively developed, the large cherry has wide prospects, the cherry belongs to a rosaceous deciduous tree, irrigation is needed in the planting period of the large cherry, the irrigation is a technical measure for supplementing water needed by crops, and in order to guarantee the normal growth of the crops and obtain high and stable yield, sufficient water needs to be supplied to the crops. Under natural conditions, the water requirement of crops cannot be met due to insufficient rainfall or uneven distribution, so that the irrigation needs to be artificially carried out to supplement the deficiency of natural rainfall, the irrigation principle is that the irrigation quantity, the irrigation frequency and the irrigation time are determined according to the water requirement characteristics of medicinal plants, the growth stage, the climate and the soil condition, proper and reasonable irrigation is needed at proper time, and the types of irrigation mainly comprise pre-sowing irrigation, seedling promotion irrigation, growth period irrigation, winter irrigation and the like.
In the prior art, a person irrigates large cherries by holding a water pipe for irrigation, the labor intensity of the person is high, and therefore an irrigation device for the large cherries is needed.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides an irrigation device for large cherries, which does not need to be manually held through an external water pipe for irrigation, and effectively reduces the labor intensity of personnel.
In order to achieve the purpose, the invention provides the following technical scheme:
an irrigation device for large cherries comprises a bearing bottom plate, wherein a telescopic rod is arranged at the top end of the bearing bottom plate and fixedly connected with the bearing bottom plate, an irrigation mechanism is arranged at the top end of the telescopic rod, and an accommodating mechanism is arranged at the outer end of the bearing bottom plate;
the irrigation mechanism comprises a hollow circular plate, a first pipeline is fixedly arranged at the top end of the hollow circular plate, a plurality of spray heads and two connecting pipes are fixedly arranged at the outer end of the hollow circular plate, the connecting pipes are arranged at the inner sides of the spray heads, one ends of the connecting pipes extend into the hollow circular plate, atomizing spray heads are fixedly arranged at the other ends of the connecting pipes, a rotating rod is arranged in the hollow circular plate, two ends of the rotating rod penetrate through the hollow circular plate and extend out of the hollow circular plate, the rotating rod is movably connected with the hollow circular plate through a sealing bearing, fan blades are fixedly arranged at two ends of the rotating rod, the fan blades are arranged between the spray heads and the atomizing spray heads, a plurality of blades are fixedly arranged at the outer end of the rotating rod, the blades are;
the containing mechanism comprises an annular frame, the annular frame is fixedly arranged at the outer end of the bearing bottom plate, an annular rubber pad is arranged on the inner wall of the annular frame, the annular frame is fixedly bonded with the annular rubber pad, a plurality of limiting belts are arranged at the top end of the annular frame, one end of each limiting belt is fixedly arranged at the top end of the annular frame, and the other end of each limiting belt is arranged at the outer end of the annular frame.
Preferably, the top end of the bearing bottom plate is provided with a collecting assembly, and the collecting assembly is arranged on the outer side of the telescopic rod.
Preferably, collect the subassembly and collect the frame including the annular, the frame is collected to the annular is fixed to be established on bearing bottom plate top, the frame is collected in the annular and is established in the telescopic link outside, the frame top is collected to the annular is equipped with annular filter screen, the frame is collected to the annular and passes through bolt fixed connection with annular filter screen, the fixed water pump that is equipped with in bearing bottom plate top, the water pump is established and is collected the frame inboard at the annular, the water pump is established in telescopic link one side, the fixed second pipeline that is equipped with in the water inlet end of water pump, the fixed third pipeline that is equipped with in water outlet end of water pump, the second pipeline is established on annular filter screen top and.
Preferably, a fourth pipeline is fixedly arranged at the bottom end of the hollow circular plate, the fourth pipeline is fixedly arranged at the top end of the telescopic rod, and one end of the third pipeline is fixedly connected with the outer end of the fourth pipeline.
Preferably, the fixed kuppe that is equipped with in cavity plectane bottom, the kuppe is established at the annular filter screen top, the kuppe is established in the telescopic link, the third pipeline and the fourth pipeline outside.
Preferably, the top end of the first pipeline is connected with an external water pipe through a quick connector.
In a preferred embodiment, the other end of the spacing belt is connected with the outer end of the annular frame through a magic tape.
Preferably, a first opening is formed in the rear end of the annular frame, a second opening is formed in the rear end of the annular rubber pad, and the first opening is formed in the rear side of the second opening.
The invention has the beneficial effects that:
1. the redundant part of the external water receiving pipe is stored through the storage mechanism, so that the phenomenon that the external water receiving pipe topples due to uneven stress is effectively prevented, the stability is effectively improved, then a person connects the external water pipe with the irrigation mechanism, and irrigates the surrounding large cherries through the nozzles of the irrigation mechanism;
2. according to the invention, the water dripping from the spray head is collected by the collecting assembly and is conveyed into the irrigation mechanism again for spraying, compared with the prior art, the waste of the water dripping from the spray head is effectively prevented, and the bearing bottom plate and the surrounding environment are prevented from being dirtied.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic top view of the irrigation mechanism of the present invention.
Fig. 3 is a schematic perspective view of the pod of the present invention.
FIG. 4 is a schematic top view of the ring-shaped collecting frame of the present invention.
Fig. 5 is a schematic perspective view of the annular collecting frame of the present invention.
Fig. 6 is a schematic top view of the storage mechanism of the present invention.
Fig. 7 is a schematic perspective view of the ring frame of the present invention.
The reference signs are: 1 bearing bottom plate, 2 telescopic links, 3 irrigation mechanism, 4 receiving mechanism, 5 cavity plectanes, 6 first pipeline, 7 shower nozzles, 8 connecting pipes, 9 bull sticks, 10 blades, 11 annular frame, 12 annular rubber pads, 13 spacing area, 14 collection subassembly, 15 annular collection frame, 16 annular filter screen, 17 water pump, 18 second pipeline, 19 third pipeline, 20 fourth pipeline, 21 kuppe, 22 flabellum, 23 atomizer, 24 first openings, 25 second openings.
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.
The irrigation device for the large cherries comprises a bearing bottom plate 1, wherein a telescopic rod 2 is arranged at the top end of the bearing bottom plate 1, the telescopic rod 2 is fixedly connected with the bearing bottom plate 1, an irrigation mechanism 3 is arranged at the top end of the telescopic rod 2, and an accommodating mechanism 4 is arranged at the outer end of the bearing bottom plate 1;
the irrigation mechanism 3 comprises a hollow circular plate 5, a first pipeline 6 is fixedly arranged at the top end of the hollow circular plate 5, the outer end of the hollow circular plate 5 is fixedly provided with a plurality of nozzles 7 and two connecting pipes 8, the connecting pipes 8 are arranged at the inner sides of the nozzles 7, one end of the connecting pipe 8 extends into the hollow circular plate 5, the other end of the connecting pipe 8 is fixedly provided with an atomizing nozzle 23, the hollow circular plate 5 is internally provided with a rotating rod 9, both ends of the rotating rod 9 penetrate through the hollow circular plate 5 and extend out of the outer side of the hollow circular plate 5, the rotating rod 9 is movably connected with the hollow circular plate 5 through a sealing bearing, both ends of the rotating rod 9 are fixedly provided with fan blades 22, the fan blades 22 are arranged between the spray head 7 and the atomizing spray head 23, the outer end of the rotating rod 9 is fixedly provided with a plurality of blades 10, the plurality of blades 10 are all arranged inside the hollow circular plate 5, and the blades 10 are arranged at the bottom of the first pipeline 6;
the storage mechanism 4 comprises an annular frame 11, the annular frame 11 is fixedly arranged at the outer end of the bearing bottom plate 1, an annular rubber pad 12 is arranged on the inner wall of the annular frame 11, the annular frame 11 is fixedly bonded with the annular rubber pad 12, a plurality of limiting belts 13 are arranged at the top end of the annular frame 11, one ends of the limiting belts 13 are fixedly arranged at the top end of the annular frame 11, and the other ends of the limiting belts 13 are arranged at the outer end of the annular frame 11.
The top end of the first pipeline 6 is connected with an external water pipe through a quick joint, so that the first pipeline 6 and the external water pipe can be quickly disassembled and assembled conveniently.
The other end of the limiting belt 13 is connected with the outer end of the annular frame 11 through a magic tape, so that the limiting belt 13 is connected with the annular frame 11 conveniently.
First opening 24 has been seted up to annular frame 11 rear end, second opening 25 has been seted up to annular rubber pad 12 rear end, first opening 24 is established at second opening 25 rear side, and the unnecessary part of external water pipe of being convenient for is put into annular frame 11 inside.
The implementation mode is specifically as follows: when the invention is in actual use, firstly, the external water pipe is connected with the first pipeline 6 by using the quick connector, then the redundant part of the external water pipe is spirally arranged inside the annular frame 11, the redundant part of the external water pipe is stored, meanwhile, the redundant part of the external water pipe is uniformly distributed outside the bearing bottom plate 1, the invention is effectively prevented from toppling over due to uneven stress, the stability of the invention is further effectively improved, the annular rubber pad 12 inside the annular frame 11 is directly contacted with the external water pipe, the abrasion of the external water pipe is effectively reduced, then the movable end of the limiting belt 13 is fixed with the outer end of the annular frame 11 by magic tape around the top of the annular frame 11, the limiting belt 13 limits the external water pipe inside the annular frame 11, the spirally wound external water pipe is effectively prevented from loosening, the aesthetic property is effectively improved, then, personnel convey irrigation water into the hollow circular plate 5 along the first pipeline 6 through the external water pipe, then the water is sprayed outwards through the spray head 7, irrigation of surrounding large cherries is achieved, the height of the hollow circular plate 5 can be adjusted by adjusting the length of the telescopic rod 2, and the irrigation range is convenient to adjust, manual holding is not needed when an external water pipe is used for irrigation, so that the labor intensity of personnel is effectively reduced, meanwhile, when the first pipeline 6 conveys water into the hollow circular plate 5, the water impacts the blades 10, the blades 10 are rotated by impact force, the rotating rod 9 connected with the hollow circular plate 5 is driven to rotate, the fan blades 22 are driven to rotate, meanwhile, the water in the hollow circular plate 5 is sprayed out through the connecting pipe 8 and the atomizing spray head 23 to form water mist, the water mist is sent to the surrounding environment by wind power generated by the fan blades 22, so that the interior of a greenhouse for planting large cherries is humidified, the quality of the environment in the greenhouse is effectively improved, and the fan blades, effectively practice thrift the electric energy, reduce cost, this embodiment has specifically solved among the prior art the water pipe of the handheld irrigation usefulness of personnel and irrigates large cherry, the great problem of personnel intensity of labour.
The irrigation device for the large cherries, shown in figures 1, 3, 4 and 5, further comprises a collection assembly 14, wherein the collection assembly 14 is arranged at the top end of the bearing bottom plate 1, and the collection assembly 14 is arranged outside the telescopic rod 2.
Collect subassembly 14 and collect frame 15 including the annular, frame 15 is collected to the annular is fixed to be established on 1 top of bearing bottom plate, frame 15 is collected to the annular is established in the 2 outsides of telescopic link, frame 15 top is collected to the annular is equipped with annular filter screen 16, frame 15 is collected to the annular and bolt fixed connection is passed through with annular filter screen 16, 1 fixed water pump 17 that is equipped with in top of bearing bottom plate, water pump 17 is established and is collected frame 15 inboardly at the annular, water pump 17 is established in 2 one sides of telescopic link, the fixed second pipeline 18 that is equipped with of water pump 17's water inlet end, the fixed third pipeline 19 that is equipped with in water pump 17's play water end, second pipeline 18 is established on 16 tops of annular filter screen and is run through annular filter screen 16.
The bottom end of the hollow circular plate 5 is fixedly provided with a fourth pipeline 20, the fourth pipeline 20 is fixedly arranged at the top end of the telescopic rod 2, and one end of the third pipeline 19 is fixedly connected with the outer end of the fourth pipeline 20.
The fixed kuppe 21 that is equipped with in 5 bottom of cavity plectanes, kuppe 21 establishes at annular filter 16 tops, kuppe 21 establishes in telescopic link 2, third pipeline 19 and the 20 outsides of fourth pipeline, is convenient for carry out the water conservancy diversion to the water that drips.
The implementation mode is specifically as follows: after the spray head 7 in the prior art is used for a long time, part of holes are blocked or damaged, so that the spray head 7 can drip into water, the water dripping from the spray head 7 falls onto the air guide sleeve 21, then the water falls onto the ring-shaped filter screen 16 along the diversion cover 21, then the water passes through the ring-shaped filter screen 16 and falls into the ring-shaped collection frame 15, the ring-shaped filter screen 16 filters impurities in the water, when the water in the annular collecting frame 15 is accumulated to a certain height, the person starts the water pump 17, the water pump 17 works to convey the water in the annular collecting frame 15 into the fourth pipeline 20 through the second pipeline 18 and the third pipeline 19, then the water is conveyed into the hollow circular plate 5 and is sprayed outwards through the spray head 7 and the atomizing spray head 23, the water dropping on the spray head 7 is effectively prevented from being wasted, the bearing bottom plate 1 and the surrounding environment are prevented from being polluted, this embodiment has specifically solved among the prior art irrigation with the shower nozzle on the water easy problem of wasting of drippage take place.
The working principle of the invention is as follows:
referring to the attached drawings 1, 2, 6 and 7 of the specification, when the large cherry planting greenhouse is actually used, firstly, an external water pipe is connected with a first pipeline 6, then, the redundant part of the external water pipe is spirally placed inside an annular frame 11 to be stored, then, the external water pipe inside the annular frame 11 is limited through a limiting belt 13, irrigation water is conveyed into a hollow circular plate 5 along the first pipeline 6 through the external water pipe, then, the irrigation water is sprayed outwards through a spray head 7, irrigation on surrounding large cherries is achieved, the height of the hollow circular plate 5 can be adjusted by adjusting the length of a telescopic rod 2, meanwhile, water impacts blades 10 to rotate to drive a rotating rod 9 and blades 22 to rotate, meanwhile, the water is sprayed out through an atomizing spray head 23 to form water mist, and the water mist is conveyed to the surrounding environment by wind power generated by the blades 22 to humidify the inside of the greenhouse for planting the large cherries;
referring to the attached fig. 1, 3, 4 and 5 of the specification, water dropping from the spray head 7 falls on the air guide sleeve 21, then falls into the annular collection frame 15 along the air guide sleeve 21, when the water in the annular collection frame 15 is accumulated to a certain height, the water in the annular collection frame 15 is conveyed into the fourth pipeline 20 through the second pipeline 18 and the third pipeline 19 by the operation of the water pump 17, then conveyed into the hollow circular plate 5 and sprayed outwards through the spray head 7 and the atomizing spray head 23.
The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;
secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the invention, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the invention can be combined with each other without conflict;
and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.
Claims (8)
1. An irrigation device for large cherries, comprising a load-bearing floor (1), characterized in that: the top end of the bearing bottom plate (1) is provided with a telescopic rod (2), the telescopic rod (2) is fixedly connected with the bearing bottom plate (1), the top end of the telescopic rod (2) is provided with an irrigation mechanism (3), and the outer end of the bearing bottom plate (1) is provided with a storage mechanism (4);
irrigation mechanism (3) includes cavity plectane (5), the fixed first pipeline (6) that is equipped with in cavity plectane (5) top, fixed a plurality of shower nozzles (7) and two connecting pipes (8) of being equipped with in cavity plectane (5) outer end, shower nozzle (7) inboard is established in connecting pipe (8), connecting pipe (8) one end extends into inside cavity plectane (5), atomizing nozzle (23) are fixed to be equipped with in connecting pipe (8) other end, the inside bull stick (9) that is equipped with of cavity plectane (5), bull stick (9) both ends all pass cavity plectane (5) and extend the cavity plectane (5) outside, bull stick (9) and cavity plectane (5) are through sealed bearing swing joint, bull stick (9) both ends all are fixed and are equipped with flabellum (22), flabellum (22) are established between shower nozzle (7) and atomizing nozzle (23), a plurality of blades (10) are fixedly arranged at the outer end of the rotating rod (9), the blades (10) are all arranged inside the hollow circular plate (5), and the blades (10) are arranged at the bottom of the first pipeline (6);
receiving mechanism (4) are including annular frame (11), annular frame (11) are fixed to be established in bearing bottom plate (1) outer end, be equipped with annular rubber pad (12) on annular frame (11) inner wall, annular frame (11) are fixed with annular rubber pad (12) bonding, annular frame (11) top is equipped with a plurality of spacing areas (13), spacing area (13) one end is fixed to be established on annular frame (11) top, spacing area (13) other end is established in annular frame (11) outer end.
2. An irrigation device for large cherries according to claim 1, wherein: the top end of the bearing bottom plate (1) is provided with a collecting component (14), and the collecting component (14) is arranged on the outer side of the telescopic rod (2).
3. An irrigation device for large cherries according to claim 2, wherein: the collecting component (14) comprises an annular collecting frame (15), the annular collecting frame (15) is fixedly arranged at the top end of the bearing bottom plate (1), the annular collecting frame (15) is arranged at the outer side of the telescopic rod (2), the top end of the annular collecting frame (15) is provided with an annular filter screen (16), the annular collecting frame (15) is fixedly connected with the annular filter screen (16) through bolts, the top end of the bearing bottom plate (1) is fixedly provided with a water pump (17), the water pump (17) is arranged at the inner side of the annular collecting frame (15), the water pump (17) is arranged at one side of the telescopic rod (2), a second pipeline (18) is fixedly arranged at the water inlet end of the water pump (17), the water outlet end of the water pump (17) is fixedly provided with a third pipeline (19), and the second pipeline (18) is arranged at the top end of the annular filter screen (16) and penetrates through the annular filter screen (16) to extend into the annular collecting frame (15).
4. An irrigation device for large cherries according to claim 3, wherein: the bottom end of the hollow circular plate (5) is fixedly provided with a fourth pipeline (20), the fourth pipeline (20) is fixedly arranged at the top end of the telescopic rod (2), and one end of the third pipeline (19) is fixedly connected with the outer end of the fourth pipeline (20).
5. An irrigation device for large cherries according to claim 4, wherein: the fixed kuppe (21) that is equipped with in cavity plectane (5) bottom, establish at annular filter screen (16) top kuppe (21), establish in telescopic link (2), third pipeline (19) and fourth pipeline (20) the outside kuppe (21).
6. An irrigation device for large cherries according to claim 1, wherein: the top end of the first pipeline (6) is connected with an external water pipe through a quick connector.
7. An irrigation device for large cherries according to claim 1, wherein: the other end of the limiting belt (13) is connected with the outer end of the annular frame (11) through a magic tape.
8. An irrigation device for large cherries according to claim 1, wherein: a first opening (24) is formed in the rear end of the annular frame (11), a second opening (25) is formed in the rear end of the annular rubber pad (12), and the first opening (24) is formed in the rear side of the second opening (25).
Priority Applications (1)
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CN201911079877.3A CN110771408B (en) | 2019-11-07 | 2019-11-07 | Irrigation device for large cherries |
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CN201911079877.3A CN110771408B (en) | 2019-11-07 | 2019-11-07 | Irrigation device for large cherries |
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CN110771408A CN110771408A (en) | 2020-02-11 |
CN110771408B true CN110771408B (en) | 2021-04-27 |
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CN201911079877.3A Active CN110771408B (en) | 2019-11-07 | 2019-11-07 | Irrigation device for large cherries |
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Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
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KR200174423Y1 (en) * | 1999-10-15 | 2000-03-15 | 오상복 | Humidifier |
US7159794B2 (en) * | 2003-02-19 | 2007-01-09 | Mcintyre Arthur N | Portable wash station |
CN205408919U (en) * | 2016-03-15 | 2016-08-03 | 盐城工学院 | Irrigation equipment draws water in small -size field |
CN208191669U (en) * | 2018-05-15 | 2018-12-07 | 安徽瓦大现代农业科技有限公司 | A kind of suspension type spray drop filling device |
CN208675994U (en) * | 2018-08-07 | 2019-04-02 | 钟雪娟 | A kind of rotary type agricultural irrigation device |
CN208891376U (en) * | 2018-08-10 | 2019-05-24 | 王正阳 | A kind of multi-functional water conservancy irrigation device |
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2019
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