CN112262749A - Energy-saving agricultural hydraulic engineering irrigation equipment - Google Patents

Energy-saving agricultural hydraulic engineering irrigation equipment Download PDF

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Publication number
CN112262749A
CN112262749A CN202011160823.2A CN202011160823A CN112262749A CN 112262749 A CN112262749 A CN 112262749A CN 202011160823 A CN202011160823 A CN 202011160823A CN 112262749 A CN112262749 A CN 112262749A
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China
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fixedly connected
energy
water
supporting rod
hydraulic engineering
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CN202011160823.2A
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Chinese (zh)
Inventor
邓浩亮
张永玲
肖让
张恒嘉
潘小番
王玉才
王嘉琦
陈涛
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Hexi University
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Hexi University
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Priority to CN202011160823.2A priority Critical patent/CN112262749A/en
Publication of CN112262749A publication Critical patent/CN112262749A/en
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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G25/00Watering gardens, fields, sports grounds or the like
    • A01G25/09Watering arrangements making use of movable installations on wheels or the like
    • A01G25/092Watering arrangements making use of movable installations on wheels or the like movable around a pivot centre
    • GPHYSICS
    • G16INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
    • G16YINFORMATION AND COMMUNICATION TECHNOLOGY SPECIALLY ADAPTED FOR THE INTERNET OF THINGS [IoT]
    • G16Y10/00Economic sectors
    • G16Y10/05Agriculture

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Agronomy & Crop Science (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Development Economics (AREA)
  • Economics (AREA)
  • General Business, Economics & Management (AREA)
  • Computing Systems (AREA)
  • Water Supply & Treatment (AREA)
  • Environmental Sciences (AREA)
  • Nozzles (AREA)

Abstract

The invention discloses an energy-saving agricultural water conservancy project irrigation device which comprises a supporting table and a control system, wherein the bottom of the supporting table is fixedly connected with an underframe, the bottom of the underframe is fixedly connected with a pulley, the top of the supporting table is fixedly connected with a box body, a water pumping mechanism is arranged in the box body, and spraying mechanisms are arranged on the front side and the rear side of the box body. This energy-saving agricultural hydraulic engineering irrigation equipment, through being provided with sprinkler structure, utilize the power of water pump, the cooperation supporting shoe, first bracing piece, the apparatus further comprises a rotating shaft, the second bracing piece, the steering gear, shower nozzle and diffusion hole, expand this energy-saving agricultural hydraulic engineering irrigation equipment's both sides, make spraying of its width more, simultaneously through each shower nozzle, make spraying more even, the waste of water resource has been avoided, the simultaneous operation is got up more convenience, avoided external factor to its influence and reduced its life.

Description

Energy-saving agricultural hydraulic engineering irrigation equipment
Technical Field
The invention relates to the technical field of agricultural irrigation, in particular to an energy-saving agricultural water conservancy project irrigation device.
Background
The agricultural irrigation methods can be generally divided into traditional ground irrigation, common spray irrigation and micro irrigation, the traditional ground irrigation comprises furrow irrigation, flood irrigation and flood irrigation, but the irrigation methods are often large in water consumption and low in water utilization, and are unreasonable agricultural irrigation methods, the water utilization efficiency of the common spray irrigation technology is low, the modern agricultural micro irrigation technologies comprise micro spray irrigation, drip irrigation, infiltration irrigation and the like, the irrigation technologies are generally good in water saving performance, the water utilization rate is higher than that of the traditional irrigation modes, and certain disadvantages exist.
Most of the existing agricultural hydraulic engineering irrigation devices are buried underground for infiltrating irrigation or are irrigated on the ground surface through drip irrigation pipes, but the devices often have uneven irrigation due to large difference of head and tail water pressure of irrigation water supply pipelines, meanwhile, the water resources are consumed more, the service life of the irrigation water supply pipelines can be greatly shortened due to long-time external factor influence, and the operation is inconvenient due to the fact that remote automatic operation cannot be carried out.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an energy-saving agricultural hydraulic engineering irrigation device, which solves the problems that the existing agricultural hydraulic engineering irrigation device is easy to cause uneven irrigation, the waste of water resources is serious, and the service life of the agricultural hydraulic engineering irrigation device is greatly shortened due to the influence of external factors.
In order to achieve the purpose, the invention is realized by the following technical scheme: an energy-saving agricultural water conservancy project irrigation device comprises a supporting table and a control system, wherein the bottom of the supporting table is fixedly connected with an underframe, the bottom of the underframe is fixedly connected with pulleys, the top of the supporting table is fixedly connected with a box body, a water pumping mechanism is arranged in the box body, spraying mechanisms are arranged on the front side and the rear side of the box body, each spraying mechanism comprises a supporting block and a first supporting rod, one side of each supporting block is fixedly connected with the surface of the box body, one end of each first supporting rod is fixedly connected with a rotating shaft, the outer surface of each rotating shaft is rotatably connected with the inside of the supporting block, the other end of each first supporting rod is movably connected with a second supporting rod, the other end of each first supporting rod is rotatably connected with a steering gear, one end of each second supporting rod is fixedly connected with the surface of the steering gear, and the bottoms of the, the surface of the spray head is provided with diffusion holes.
Preferably, including water tank and water pump in the mechanism of drawing water, the bottom of water tank and water pump all with the bottom fixed connection of box inner chamber, the top intercommunication of water tank has first inlet tube.
Preferably, the water inlet of water pump intercommunication has the second inlet tube, the one end of second inlet tube runs through the water tank and extends to the inside of water tank, the delivery port intercommunication of water pump has first outlet pipe.
Preferably, one end of the first water outlet pipe is communicated with a second water outlet pipe through a flow divider, two ends of the second water outlet pipe are communicated with spraying pipes, and filter screens are fixedly connected to the inner surfaces of two ends of the second water outlet pipe.
Preferably, one end of the spray pipe penetrates through the box body, the supporting block, the first supporting rod and the second supporting rod in sequence and extends to the inside of the second supporting rod, and the surface of the spray pipe is fixedly connected with the top end of the spray head.
Preferably, the top of the box body is fixedly connected with a supporting plate, two sides of the top of the supporting plate are fixedly connected with solar panels, and the bottom of each solar panel is fixedly connected with the top of the box body.
Preferably, the top of the inner cavity of the box body is fixedly connected with a storage battery, the left side of the box body is rotatably connected with a box door, and the surface of the box door is fixedly connected with a handle.
Preferably, including remote operation module, data processor, data feedback module and removal work module in the control system, remote operation module's output and data processor's input are passed through the LAN and are connected, data processor's output and data feedback module's input electric connection, data processor's output and removal work module's input electric connection, data feedback module's output and the input electric connection who sprays the mechanism.
Advantageous effects
The invention provides an energy-saving agricultural water conservancy project irrigation device. Compared with the prior art, the method has the following beneficial effects:
(1) the energy-saving agricultural water conservancy project irrigation device is characterized in that spraying mechanisms are arranged on the front side and the rear side of a box body, each spraying mechanism comprises a supporting block and a first supporting rod, one side of each supporting block is fixedly connected with the surface of the box body, one end of each first supporting rod is fixedly connected with a rotating shaft, the outer surface of each rotating shaft is rotatably connected with the inside of each supporting block, the other end of each first supporting rod is movably connected with a second supporting rod, the other end of each first supporting rod is rotatably connected with a steering gear, one end of each second supporting rod is fixedly connected with the surface of the steering gear, the bottoms of the first supporting rods and the bottoms of the second supporting rods are fixedly connected with spray heads, diffusion holes are formed in the surfaces of the spray heads, each pumping mechanism comprises a water tank and a water pump, the bottoms of the water tanks and the water pumps are fixedly connected with the bottom, the one end of second inlet tube runs through the water tank and extends to the inside of water tank, the delivery port intercommunication of water pump has first outlet pipe, the one end of first outlet pipe has the second outlet pipe through the shunt intercommunication, the both ends of second outlet pipe all communicate there is the shower nozzle, the equal fixedly connected with filter screen of internal surface at second outlet pipe both ends, through being provided with sprinkler structure, utilize the power of water pump, the cooperation supporting shoe, first bracing piece, the apparatus further comprises a rotating shaft, the second bracing piece, the steering gear, shower nozzle and diffusion hole, expand this energy-saving agricultural hydraulic engineering irrigation equipment's both sides, make it spray that can be more wide, simultaneously through each shower nozzle, make spray more even, the waste of water resource has been avoided, the simultaneous operation is got up convenience more, the influence of external factor to it has been avoided and its life has been reduced.
(2) This energy-saving agricultural hydraulic engineering irrigation equipment, through the top fixedly connected with backup pad at the box, the equal fixedly connected with solar cell panel in both sides at backup pad top, solar cell panel's bottom and the top fixed connection of box, the top fixedly connected with battery of box inner chamber, the left side of box is rotated and is connected with the chamber door, the fixed surface of chamber door is connected with the handle, through being provided with solar cell panel, utilize the battery to carry out the electric power storage, the cooperation mechanism that draws water, thereby utilize light energy to convert the electric energy supply into and use for the device, make this energy-saving agricultural hydraulic engineering irrigation equipment more energy-conserving, and more facilitate the use.
(3) This energy-saving agricultural hydraulic engineering irrigation equipment, through including remote operation module in control system, data processor, data feedback module and removal work module, remote operation module's output passes through the LAN with data processor's input and is connected, data processor's output and data feedback module's input electric connection, data processor's output and removal work module's input electric connection, data feedback module's output and the input electric connection who sprays the mechanism, through being provided with control system, cooperation remote operation module, data processor, data feedback module and removal work module, thereby realize long-range real-time operation, the burden of staff direct operation equipment has been alleviateed, and the work efficiency who sprays has been accelerated.
Drawings
FIG. 1 is a perspective view of the external structure of the present invention;
FIG. 2 is an exploded perspective view of the present invention;
FIG. 3 is a perspective view of the internal structure of the case of the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 2 according to the present invention;
FIG. 5 is a schematic block diagram of the control system of the present invention.
In the figure: 1-supporting table, 2-control system, 21-remote operation module, 22-data processor, 23-data feedback module, 24-mobile working module, 3-bottom frame, 4-pulley, 5-box, 6-pumping mechanism, 61-water tank, 62-water pump, 63-first water inlet pipe, 64-second water inlet pipe, 65-first water outlet pipe, 66-diverter, 67-second water outlet pipe, 68-spraying pipe, 69-filter screen, 7-spraying mechanism, 71-supporting block, 72-first supporting rod, 73-rotating shaft, 74-second supporting rod, 75-diverter, 76-spray head, 77-diffusing hole, 8-supporting plate, 9-solar panel, 10-accumulator, 10-storage battery, 11-box door, 12-handle.
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. 1-5, the present invention provides a technical solution: an energy-saving agricultural water conservancy project irrigation device comprises a supporting table 1 and a control system 2, wherein the control system 2 comprises a remote operation module 21, a data processor 22, a data feedback module 23 and a movable working module 24, the output end of the remote operation module 21 is connected with the input end of the data processor 22 through a local area network, the output end of the data processor 22 is electrically connected with the input end of the data feedback module 23, the output end of the data processor 22 is electrically connected with the input end of the movable working module 24, the output end of the data feedback module 23 is electrically connected with the input end of a spraying mechanism 7, the control system 2 is arranged to be matched with the remote operation module 21, the data processor 22, the data feedback module 23 and the movable working module 24, so that the remote real-time operation is realized, the burden of workers for directly operating equipment is reduced, and the working efficiency of spraying is accelerated, the bottom of the supporting table 1 is fixedly connected with an underframe 3, the bottom of the underframe 3 is fixedly connected with a pulley 4, the pulley 4 is convenient for the device to move, the top of the supporting table 1 is fixedly connected with a box body 5, the top of the box body 5 is fixedly connected with a supporting plate 8, both sides of the top of the supporting plate 8 are fixedly connected with solar cell panels 9, the solar cell panels 9 convert light energy into electric energy, thereby the device can be continuously used, the bottom of the solar cell panels 9 is fixedly connected with the top of the box body 5, the top of the inner cavity of the box body 5 is fixedly connected with a storage battery 10, the solar cell panels 9 are arranged, the storage battery 10 is used for storing electricity, and the energy-saving agricultural hydraulic engineering irrigation device is more energy-saving and convenient to use by matching with a water pumping mechanism 6, thereby the light energy is converted into, the surface of the box door 11 is fixedly connected with a handle 12, the inside of the box body 5 is provided with a water pumping mechanism 6, the water pumping mechanism 6 comprises a water tank 61 and a water pump 62, the water pump 62 is electrically connected with the storage battery 10, a water inlet of the water pump 62 is communicated with a second water inlet pipe 64, one end of the second water inlet pipe 64 penetrates through the water tank 61 and extends to the inside of the water tank 61, a water outlet of the water pump 62 is communicated with a first water outlet pipe 65, one end of the first water outlet pipe 65 is communicated with a second water outlet pipe 67 through a flow divider 66, the flow divider 66 divides the water flow into two parts and can adjust the speed of the water flow, both ends of the second water outlet pipe 67 are communicated with spray pipes 68, one end of each spray pipe 68 sequentially penetrates through the box body 5, a supporting block 71, a first supporting rod 72 and a second supporting rod 74 and extends to the inside of the second supporting rod 74, the surface of each, the filter screen 69 prevents particles and impurities from blocking the spray head 76, the filter screen 69 can be disassembled and replaced, the bottoms of the water tank 61 and the water pump 62 are fixedly connected with the bottom of the inner cavity of the box body 5, the top of the water tank 61 is communicated with the first water inlet pipe 63, the front side and the rear side of the box body 5 are provided with the spray mechanisms 7, the spray mechanisms 7 are arranged, the power of the water pump 62 is utilized to be matched with the supporting block 71, the first supporting rod 72, the rotating shaft 73, the second supporting rod 74, the steering gear 75, the spray head 76 and the diffusion hole 77, two sides of the energy-saving agricultural hydraulic engineering irrigation device are unfolded to spray with larger width, meanwhile, the spray is more uniform through each spray head 76, the waste of water resources is avoided, the operation is more convenient, the influence of external factors on the spray head is avoided, the service life of the spray device is shortened, and the, one side of the supporting block 71 is fixedly connected with the surface of the box body 5, one end of the first supporting rod 72 is fixedly connected with a rotating shaft 73, the outer surface of the rotating shaft 73 is rotatably connected with the inside of the supporting block 71, the other end of the first supporting rod 72 is movably connected with a second supporting rod 74, the other end of the first supporting rod 72 is rotatably connected with a steering gear 75, the steering gear 75 can retract the first supporting rod 72 and the second supporting rod 74 when not in use, one end of the second supporting rod 74 is fixedly connected with the surface of the steering gear 75, the bottoms of the first supporting rod 72 and the second supporting rod 74 are both fixedly connected with a spray head 76, the surface of the spray head 76 is provided with a diffusion hole 77, and the diffusion hole 77 breaks water drops into water mist to irrigate crops to make the water mist more uniform, and the content which is not described in detail in the specification belongs to the prior art which.
When the energy-saving agricultural hydraulic engineering irrigation device works, firstly, the energy-saving agricultural hydraulic engineering irrigation device is placed at a required position, an instruction is transmitted to the data processor 22 through a local area network by the operation of the remote operation control module 21, the data feedback module 23 starts to run, the control system 2 is arranged to match the remote operation module 21, the data processor 22, the data feedback module 23 and the mobile work module 24, so that the remote real-time operation is realized, the burden of a worker on directly operating the device is reduced, the spraying work efficiency is accelerated, then, the spraying mechanism 7 is started, the first supporting rod 72 rotates in the supporting block 71 until the supporting block is vertical to the box body 1, the second supporting rod 74 is rotated at the moment, the first supporting rod 71 and the second supporting rod 74 are kept on a parallel line, then, the water pump 62 is started to transmit the water in the water tank 61 to the first water outlet pipe 65 from the second water inlet pipe 64, through the diversion of the diverter 66, finally, the water flows into the spray head 76 through the second water outlet pipe 67 and the spray pipe 68, finally, the water is sprayed through the diffusion hole 77 for irrigation, through the arrangement of the spraying mechanism 7, by utilizing the power of the water pump 62, the supporting block 71, the first supporting rod 72, the rotating shaft 73, the second supporting rod 74, the steering gear 75, the spray head 76 and the diffusion hole 77 are matched, two sides of the energy-saving agricultural hydraulic engineering irrigation device are unfolded, so that the energy-saving agricultural hydraulic engineering irrigation device can spray in a larger width, meanwhile, the spraying is more uniform through the spray heads 76, the waste of water resources is avoided, meanwhile, the operation is more convenient, the influence of external factors on the energy-saving agricultural hydraulic engineering irrigation device is avoided, the service life of the energy-saving agricultural hydraulic engineering irrigation device is shortened, the power supply required by the operation is absorbed by the solar cell panel 9, the power, utilize battery 10 to carry out the electric power storage, the cooperation mechanism 6 that draws water to utilize light energy to convert the electric energy into and supply for the device and use, make this energy-saving agricultural hydraulic engineering irrigation device more energy-conserving, and more facilitate the use.
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.
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 (8)

1. The utility model provides an energy-saving agricultural hydraulic engineering irrigation equipment, includes brace table (1) and control system (2), the bottom fixed connection chassis (3) of brace table (1), the bottom fixedly connected with pulley (4) of chassis (3), its characterized in that: a box body (5) is fixedly connected to the top of the supporting table (1), a water pumping mechanism (6) is arranged inside the box body (5), and spraying mechanisms (7) are arranged on the front side and the rear side of the box body (5);
the spraying mechanism (7) comprises a supporting block (71) and a first supporting rod (72), one side of the supporting block (71) is fixedly connected with the surface of the box body (5), one end of the first supporting rod (72) is fixedly connected with a rotating shaft (73), the outer surface of the rotating shaft (73) is rotatably connected with the inside of the supporting block (71), the other end of the first supporting rod (72) is movably connected with a second supporting rod (74), the other end of the first supporting rod (72) is rotatably connected with a steering gear (75), one end of the second supporting rod (74) is fixedly connected with the surface of the steering gear (75), spray heads (76) are fixedly connected to the bottoms of the first supporting rod (72) and the second supporting rod (74), and diffusion holes (77) are formed in the surface of the spray heads (76).
2. An energy-saving agricultural hydraulic engineering irrigation device according to claim 1, wherein: including water tank (61) and water pump (62) in the mechanism of drawing water (6), the bottom of water tank (61) and water pump (62) all with the bottom fixed connection of box (5) inner chamber, the top intercommunication of water tank (61) has first inlet tube (63).
3. An energy-saving agricultural hydraulic engineering irrigation device according to claim 2, wherein: the water inlet of water pump (62) intercommunication has second inlet tube (64), the one end of second inlet tube (64) runs through water tank (61) and extends to the inside of water tank (61), the delivery port intercommunication of water pump (62) has first outlet pipe (65).
4. An energy-saving agricultural hydraulic engineering irrigation device according to claim 3, wherein: one end of the first water outlet pipe (65) is communicated with a second water outlet pipe (67) through a flow divider (66), two ends of the second water outlet pipe (67) are communicated with spray pipes (68), and filter screens (69) are fixedly connected to the inner surfaces of two ends of the second water outlet pipe (67).
5. An energy-saving agricultural hydraulic engineering irrigation device according to claim 4, wherein: one end of the spraying pipe (68) penetrates through the box body (5), the supporting block (71), the first supporting rod (72) and the second supporting rod (74) in sequence and extends to the inside of the second supporting rod (74), and the surface of the spraying pipe (68) is fixedly connected with the top end of the spray head (76).
6. An energy-saving agricultural hydraulic engineering irrigation device according to claim 1, wherein: the solar energy water heater is characterized in that a supporting plate (8) is fixedly connected to the top of the box body (5), solar panels (9) are fixedly connected to the two sides of the top of the supporting plate (8), and the bottoms of the solar panels (9) are fixedly connected with the top of the box body (5).
7. An energy-saving agricultural hydraulic engineering irrigation device according to claim 1, wherein: the top fixedly connected with battery (10) of box (5) inner chamber, the left side of box (5) is rotated and is connected with chamber door (11), the fixed surface of chamber door (11) is connected with handle (12).
8. An energy-saving agricultural hydraulic engineering irrigation device according to claim 1, wherein: including remote operation module (21), data processor (22), data feedback module (23) and removal work module (24) in control system (2), the output of remote operation module (21) passes through the LAN with the input of data processor (22) and is connected, the output of data processor (22) and the input electric connection of data feedback module (23), the output of data processor (22) and the input electric connection of removing work module (24), the output of data feedback module (23) and the input electric connection of spraying mechanism (7).
CN202011160823.2A 2020-10-27 2020-10-27 Energy-saving agricultural hydraulic engineering irrigation equipment Pending CN112262749A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011160823.2A CN112262749A (en) 2020-10-27 2020-10-27 Energy-saving agricultural hydraulic engineering irrigation equipment

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Application Number Priority Date Filing Date Title
CN202011160823.2A CN112262749A (en) 2020-10-27 2020-10-27 Energy-saving agricultural hydraulic engineering irrigation equipment

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108293853A (en) * 2018-01-31 2018-07-20 深圳春沐源控股有限公司 A kind of intelligence water replanishing device and method
CN207869963U (en) * 2018-01-20 2018-09-18 广东新农人农业科技股份有限公司 A kind of agricultural irrigation water saving fixtures
CN209473240U (en) * 2018-12-21 2019-10-11 安徽省农业科学院园艺研究所 A kind of romaine lettuce plantation watering device with Self-watering function
CN110558206A (en) * 2019-08-15 2019-12-13 太湖县木子峰农业发展有限公司 Efficient and energy-saving automatic spraying and dripping water-saving device for agriculture and forestry
CN210746499U (en) * 2019-03-17 2020-06-16 王君萍 Agricultural irrigation equipment of adjustable area of spraying
CN211607610U (en) * 2019-09-29 2020-10-02 东北师范大学人文学院 Liquid spraying system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN207869963U (en) * 2018-01-20 2018-09-18 广东新农人农业科技股份有限公司 A kind of agricultural irrigation water saving fixtures
CN108293853A (en) * 2018-01-31 2018-07-20 深圳春沐源控股有限公司 A kind of intelligence water replanishing device and method
CN209473240U (en) * 2018-12-21 2019-10-11 安徽省农业科学院园艺研究所 A kind of romaine lettuce plantation watering device with Self-watering function
CN210746499U (en) * 2019-03-17 2020-06-16 王君萍 Agricultural irrigation equipment of adjustable area of spraying
CN110558206A (en) * 2019-08-15 2019-12-13 太湖县木子峰农业发展有限公司 Efficient and energy-saving automatic spraying and dripping water-saving device for agriculture and forestry
CN211607610U (en) * 2019-09-29 2020-10-02 东北师范大学人文学院 Liquid spraying system

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