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1. WO2020191730 - PUMP DEVICE AND AGRICULTURAL PLANT PROTECTION MACHINE

Publication Number WO/2020/191730
Publication Date 01.10.2020
International Application No. PCT/CN2019/080167
International Filing Date 28.03.2019
IPC
F04B 49/22 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
49Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups F04B1/-F04B47/196
22by means of valves
F04B 53/10 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
53Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/-F04B23/ or F04B39/-F04B47/203
10Valves; Arrangement of valves
B64D 1/18 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
64AIRCRAFT; AVIATION; COSMONAUTICS
DEQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLYING SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
1Dropping, ejecting, releasing, or receiving articles, liquids, or the like, in flight
16Dropping or releasing powdered, liquid or gaseous matter, e.g. for fire-fighting
18by spraying, e.g. insecticides
CPC
A01M 7/0032
AHUMAN NECESSITIES
01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
MCATCHING, TRAPPING OR SCARING OF ANIMALS
7Special adaptations or arrangements of liquid-spraying apparatus for purposes covered by this subclass
0025Mechanical sprayers
0032Pressure sprayers
F04B 49/225
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
49Control ; , e.g. of pump delivery, or pump pressure; of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
22by means of valves
225with throttling valves or valves varying the pump inlet opening or the outlet opening
F04B 53/04
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
53Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
04Draining
F04B 53/10
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
53Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
10Valves; Arrangement of valves
Applicants
  • 深圳市大疆创新科技有限公司 SZ DJI TECHNOLOGY CO., LTD. [CN]/[CN]
Inventors
  • 舒展 SHU, Zhan
  • 周乐 ZHOU, Le
  • 周万仁 ZHOU, Wanren
Agents
  • 北京博思佳知识产权代理有限公司 BEIJING BESTIPR INTELLECTUAL PROPERTY LAW CORPORATION
Priority Data
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) PUMP DEVICE AND AGRICULTURAL PLANT PROTECTION MACHINE
(FR) DISPOSITIF DE POMPE ET MACHINE DE PROTECTION DE PLANTES AGRICOLES
(ZH) 泵装置及农业植保机
Abstract
(EN)
A pump device and an agricultural plant protection machine, the pump device comprising: a pump body (1) provided with a liquid inlet (11) and with a liquid outlet (12); and a pressure relief device (60), the pressure relief device comprising a primary valve (610), a pilot valve (620) connected to the primary valve, and a flow guide channel (630); the primary valve comprising a liquid inlet portion (611) communicated with the liquid outlet, a liquid outlet portion (612) communicated with the liquid inlet, and a first valve core (613); the pilot valve comprising a second valve core (621) and a first channel (622); one end of the flow guide channel being communicated with the liquid outlet, the other end being provided with a first flow guide opening (631), and the second valve core being able to seal the first flow guide opening; when hydraulic pressure in the pump body exceeds a preset pressure threshold, the second valve core, affected by a pesticide top holding force, separates from the first flow guide opening, and pesticide enters the first channel, causing a pressure difference to be formed between an end of the first valve core nearest the liquid outlet portion and an end of the first valve core furthest from the liquid outlet portion, thus achieving pressure relief.
(FR)
La présente invention concerne un dispositif de pompe et une machine de protection de plantes agricoles, le dispositif de pompe comprenant : un corps de pompe (1) pourvu d'une entrée de liquide (11) et d'une sortie de liquide (12) ; et un dispositif de relâchement de pression (60), le dispositif de relâchement de pression comprenant une soupape primaire (610), une soupape pilote (620) raccordée à la soupape primaire, et un canal de guidage d'écoulement (630) ; la soupape primaire comprenant une partie entrée de liquide (611) en communication avec la sortie de liquide, une partie sortie de liquide (612) communiquant avec l'entrée de liquide, et un premier noyau de soupape (613) ; la soupape pilote comprenant un second noyau de soupape (621) et un premier canal (622) ; une extrémité du canal de guidage d'écoulement étant en communication avec la sortie de liquide, l'autre extrémité étant pourvue d'une première ouverture de guidage d'écoulement (631), et le second noyau de soupape étant apte à fermer hermétiquement la première ouverture de guidage d'écoulement ; lorsque la pression hydraulique dans le corps de pompe dépasse un seuil de pression prédéfini, le second noyau de soupape, affecté par une force de maintien supérieure de pesticide, se sépare de la première ouverture de guide d'écoulement, et le pesticide entre dans le premier canal, ce qui provoque la formation d'une différence de pression entre une extrémité du premier noyau de soupape la plus proche de la partie sortie de liquide et une extrémité du premier noyau de soupape la plus éloignée de la partie sortie de liquide, ce qui permet d'obtenir un relâchement de pression.
(ZH)
一种泵装置及农业植保机,泵装置包括:设有进液口(11)和出液口(12)的泵体(1);及泄压装置(60),泄压装置包括主阀(610)、连接在主阀上的先导阀(620)及引流通道(630);主阀包括与出液口连通的进液部(611)、与进液口连通的出液部(612)及第一阀芯(613);先导阀包括第二阀芯(621)和第一通道(622);引流通道的一端与出液口连通,另一端设有第一引流口(631),第二阀芯能够密封第一引流口;当泵体内的液压超过预设压力阈值时,第二阀芯在农药的顶持力作用下与第一引流口相分离,农药进入第一通道,使得第一阀芯靠近出液部的一端与第一阀芯远离出液部的一端形成压差,实现泄压。
Also published as
CN201980005458.7
Latest bibliographic data on file with the International Bureau