WO2022095049A1 - 离心喷头及可移动平台 - Google Patents

离心喷头及可移动平台 Download PDF

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Publication number
WO2022095049A1
WO2022095049A1 PCT/CN2020/127593 CN2020127593W WO2022095049A1 WO 2022095049 A1 WO2022095049 A1 WO 2022095049A1 CN 2020127593 W CN2020127593 W CN 2020127593W WO 2022095049 A1 WO2022095049 A1 WO 2022095049A1
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WO
WIPO (PCT)
Prior art keywords
valve
centrifugal
valve seat
spray head
elastic member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2020/127593
Other languages
English (en)
French (fr)
Inventor
舒展
吴帆
孟祥�
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SZ DJI Technology Co Ltd
Original Assignee
SZ DJI Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SZ DJI Technology Co Ltd filed Critical SZ DJI Technology Co Ltd
Priority to PCT/CN2020/127593 priority Critical patent/WO2022095049A1/zh
Priority to CN202080080107.5A priority patent/CN114765967A/zh
Publication of WO2022095049A1 publication Critical patent/WO2022095049A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
    • A01M7/00—Special adaptations or arrangements of liquid-spraying apparatus for purposes covered by this subclass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/10—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D1/00—Dropping, ejecting, releasing or receiving articles, liquids, or the like, in flight
    • B64D1/16—Dropping or releasing powdered, liquid, or gaseous matter, e.g. for fire-fighting
    • B64D1/18—Dropping or releasing powdered, liquid, or gaseous matter, e.g. for fire-fighting by spraying, e.g. insecticides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K23/00—Valves for preventing drip from nozzles

Definitions

  • the invention relates to pesticide spraying equipment, in particular to a centrifugal spray head and a movable platform.
  • the spraying system pumps the liquid medicine into the pipeline through the water pump, and conducts it to the centrifugal nozzle through the pipeline.
  • the centrifugal nozzle then uses the motor to drive the spinner to rotate, and the liquid medicine is thrown out by the centrifugal force of the spinner.
  • the centrifugal nozzle stops spraying the residual liquid in the pipeline will continue to flow to the centrifugal nozzle due to gravity and inertia, and it will take a period of time for the speed of the centrifugal nozzle motor and spinner to drop to zero. Therefore, when the spray is stopped, the centrifugal nozzle will continue to spray the liquid medicine.
  • the invention provides a centrifugal nozzle and a movable platform which can effectively reduce the phenomenon of dripping.
  • a centrifugal spray head comprising:
  • Centrifugal spray assemblies including passages for the circulation of liquids
  • a valve body assembly includes a valve seat, a valve core and an elastic member, the valve seat is provided with a valve port communicating with the passage, and the valve core is movably arranged on the valve seat for sealing the valve port ;
  • the elastic member is mechanically coupled with the valve core;
  • the valve core when the centrifugal nozzle is in a working state, can at least partially move relative to the valve seat under the action of hydraulic pressure in the channel to open the valve port, thereby conducting the channel, and The valve core urges the elastic member to elastically deform; when the centrifugal nozzle is in a stopped working state, the valve core is automatically reset under the force of the elastic member to close the valve port, thereby closing all said channel.
  • valve seat is integrally formed in the channel of the centrifugal liquid spray assembly
  • valve seat is detachably connected to the centrifugal liquid spray assembly.
  • the valve core presses the elastic member to shrink the elastic member and make the channel conduct.
  • the channel is linear or curvilinear.
  • the centrifugal liquid spray assembly includes a first pipe body and a second pipe body, the valve seat communicates with the first pipe body and the second pipe body, the valve seat, the The first pipe body and the second pipe body form the channel.
  • the axial direction of the valve seat, the axial direction of the first pipe body and the axial direction of the second pipe body are all located on the same straight line, and both ends of the valve seat are respectively connected to the The first pipe body and the second pipe body are connected.
  • valve seat is provided with a cavity, two ends of the valve seat are an inlet and an outlet respectively, the inlet and the outlet are both communicated with the passage, the valve core and the The elastic piece is accommodated in the cavity.
  • a guide groove is formed on the inner side wall of the cavity, and the guide groove extends from the inlet of the valve seat to the outlet.
  • the valve seat includes a guide portion and a constriction portion
  • the valve core and the elastic member are accommodated in the guide portion, the valve core slides along the guide portion, and the constriction portion
  • the valve element is provided at one end of the guide portion, the diameter of the constriction portion is smaller than the diameter of the guide portion, and the valve core can seal against the constriction portion.
  • the outer surface of the valve core is a spherical surface, and the abutting surface of the constricted portion against the valve core is adapted to the spherical surface.
  • the inner cavity of the guide portion is adapted to the shape of the elastic member, and the elastic member is stably contracted along the guide portion.
  • valve core is spherical.
  • valve seat is provided on one side of the channel
  • valve port is located at the top end of the valve seat, faces the channel, and can communicate with the channel, and the bottom end of the valve seat toward the outside of the centrifugal spray assembly.
  • the centrifugal liquid spray assembly includes a first tube body and a second tube body, the first tube body includes a first bending portion, and the second tube body includes a second bending portion,
  • the valve seat is arranged at the connection of the first bending part and the second bending part, and both the first bending part and the second bending part are connected with the top end of the valve seat and are connected to the valve seat. Connected.
  • the valve seat is provided with a cavity
  • the valve core is provided on the top of the cavity and isolates the cavity
  • the elastic member is located in the cavity
  • the valve A portion of the core can move along the cavity to elastically deform the elastic member.
  • the valve core includes a fixing portion and a deforming portion
  • the fixing portion is located on the periphery of the deforming portion
  • the fixing portion is fixed on the top of the valve seat
  • the deforming portion can Telescopic deformation occurs along the axial direction of the valve seat, and the telescopic deformation causes the elastic member to elastically deform.
  • the deformation portion and the fixing portion are integral structures.
  • the deformation portion when the liquid impacts the deformation portion, the deformation portion is arched toward the cavity, and the deformation portion is formed between the first tube body and the second tube body A gap that conducts the channel.
  • protrusions are formed on the side surfaces of the deformation portion facing the first tube body and the second tube body, and the deformation portion is reset so that the protrusions can seal the first tube body. the tube body and/or the second tube body.
  • a top of the valve seat is formed with an accommodating groove adapted to the fixing portion, and the fixing portion is accommodated in the accommodating groove.
  • valve stem the valve stem is at least partially accommodated in the cavity, a first end of the valve stem abuts against the deformation portion, and a second end of the valve stem
  • the elastic member is telescopically arranged at the bottom of the valve seat, the elastic member is sleeved on the valve stem, and the deformation portion pushes the first end of the valve stem to move the valve stem along its axial direction, The elastic member is elastically deformed.
  • the first end of the valve rod is provided with a convex cover, the convex cover abuts one end of the elastic member, and the other end of the elastic member abuts against the bottom of the valve seat.
  • a boss is provided on the end surface of the first end of the valve stem, and the boss supports the middle portion of the deformation portion.
  • the bottom of the valve seat is provided with a through hole for passing through the second end of the valve stem, and the valve seat is provided with a positioning portion protruding toward the cavity at the through hole. , the valve rod passes through the positioning portion, and the elastic piece is sleeved outside the positioning portion.
  • a pressure relief valve is provided at the second end, the pressure relief valve is connected with the valve stem, and pulling the pressure relief valve drives the valve stem to expand and contract, so that the deformation portion is deformed.
  • the pressure relief valve is connected to the second end by a tightening screw, and a shockproof member is sleeved on the tightening screw.
  • the valve core is an elastic diaphragm structure.
  • the elastic member is cylindrical, and the elastic member is elastically deformed along its axial direction.
  • the centrifugal liquid spray assembly further includes a driving device and a spinner, the liquid outlet of the channel is connected to the spinner, and the drive device is used to drive the spinner to rotate, and the spinner The pan shakes the liquid out.
  • a movable platform comprising: a frame and one or more spraying systems arranged on the frame, the spraying system comprising: a water pump, a water tank, a pipeline, and a centrifugal spray head, the water pump is used to spray the inside of the water tank The liquid is delivered to the centrifugal nozzle through the pipeline.
  • a plurality of the centrifugal spray heads are communicated with the same water pump.
  • the water pump and the centrifugal nozzle start to work at the same time, or/and stop working at the same time.
  • the liquid flow in the channel forms a pressure difference, pushes the valve core to move, and elastically deforms the elastic member.
  • the movement of the valve core makes the channel conduct and realizes the spraying of the centrifugal nozzle.
  • the spray is closed, there is no pressure formed by the liquid flow in the channel, and the elastic member recovers the deformation, so that the valve core closes the channel. Therefore, when the channel is closed, the liquid flow remaining in the pipeline will not continue to flow, so the phenomenon of dripping can be effectively reduced.
  • FIG. 1 is a side view of the centrifugal nozzle of the present embodiment
  • Fig. 2 is the perspective view of the centrifugal nozzle shown in Fig. 1;
  • Fig. 3 is the sectional view of the centrifugal nozzle shown in Fig. 1;
  • Figure 4 is a perspective view of the valve seat shown in Figure 3;
  • FIG. 5 is a perspective view of a centrifugal spray head of another embodiment
  • Figure 6 is a cross-sectional view of the centrifugal nozzle shown in Figure 5;
  • Fig. 7 is the partial structure schematic diagram of the centrifugal nozzle shown in Fig. 6;
  • FIG. 8 is a schematic diagram of an electrical module of the centrifugal nozzle of the present embodiment.
  • FIG. 9 is a schematic structural diagram of an unmanned aerial vehicle of the present embodiment.
  • Unmanned aerial vehicle 101. Rack; 103. Sprinkling system; 103a, water pump; 103b, water tank; 103c, pipeline;
  • centrifugal spray head 110, centrifugal liquid spray assembly; 111, housing; 112, receiving cavity; 113, channel; 114; first pipe body; 115, second pipe body;
  • valve seat 1211, guide part; 1212, necking part; 1213, guide groove; 122, valve core; 123, elastic part; 124, valve port;
  • centrifugal spray head 210, centrifugal liquid spray assembly; 213, channel; 214, first tube body; 2141, first bending part; 215, second tube body; 2151, second bending part;
  • valve seat 2211, positioning part; 2213, receiving groove; 222, valve core; 2221, fixing part; 2222, deformation part; 2223, protrusion; 223, elastic part; 224, valve port; 225, valve stem; 2251, convex cover; 2252, boss; 23, pressure relief valve; 231, shockproof parts;
  • the centrifugal spray head provided in this embodiment can be used for a movable platform, such as an unmanned aerial vehicle, a pesticide spraying vehicle, a manpower spraying device, and the like.
  • the drone can be an agricultural plant protection drone.
  • the centrifugal nozzle can adjust the flow according to the speed of the drone, and can drive the liquid spray device to discharge the liquid, throw the liquid medicine out, and form mist droplets.
  • the UAV 10 of this embodiment includes a frame 101 and one or more spraying systems 103 disposed on the frame 101 .
  • the spray system 103 includes a water pump 103 a , a water tank 103 b , a pipeline 103 c , and a plurality of centrifugal spray heads 100 .
  • the water pump 103a is used to transport the liquid in the water tank 103b to the centrifugal spray head 100 through a pipeline.
  • a plurality of centrifugal spray heads 100 may be communicated with the same water pump 103a.
  • the above-mentioned spraying system 103 can realize that only one water pump can drive a plurality of centrifugal spray heads in the drone. Moreover, the flow control of each centrifugal nozzle 100 is independently controlled between each centrifugal nozzle to ensure the uniform spray volume of each centrifugal nozzle, which overcomes the redundancy caused by the matching of the number of pumps and the number of centrifugal nozzles on the traditional movable platform. high cost.
  • a centrifugal spray head 100 of this embodiment includes a centrifugal liquid spray assembly 110 and a valve body assembly 120 .
  • the centrifugal spray assembly 110 may include a housing 111 .
  • the housing 111 is formed with a receiving cavity 112 .
  • a channel 113 for liquid flow is formed in the receiving cavity 112 .
  • the channel 113 may be at least partially disposed in the receiving cavity.
  • the channel 113 may be at least partially formed by a pipe body, or the channel 113 may also be a groove structure opened inside the housing 111 .
  • the specific formation method of the channel 113 is not limited here, as long as the centrifugal liquid spray assembly 110 is formed with a channel 113 for flowing liquid. It can be understood that the channel 113 can be a hose, a water pipe, a PVC pipe, or the like. Specifically in this embodiment, the channel 113 is a water pump connecting pipe for connecting with the water pump.
  • the channel 113 may be linear or curvilinear.
  • the channel 113 can be implemented according to the liquid direction requirements and the space layout requirements.
  • the valve body assembly 120 includes a valve seat 121 , a valve core 122 and an elastic member 123 .
  • the valve seat 121 is provided with a valve port 124 communicating with the passage 113
  • the valve core 122 is movably disposed on the valve seat 121 for sealing the valve port 124 .
  • the elastic member 123 is mechanically coupled with the valve core 122 .
  • the valve core 122 moves to drive the elastic member 123 to deform.
  • the valve core 122 When the centrifugal spray head 100 is in the working state, the valve core 122 can at least partially move relative to the valve seat 121 under the action of the hydraulic pressure in the channel 113 to open the valve port 124, thereby conducting the channel 113, and the valve core 122 urges the elastic member 123 to occur. elastic deformation.
  • the valve core 122 may move entirely within the passage 113 or partially move within the passage 113 .
  • the movement of the valve core 122 may be sliding up and down, retracting movement, or the like.
  • the valve core 122 When the centrifugal nozzle is in the stop working state, the valve core 122 is automatically reset under the force of the elastic member 123 to close the valve port 124 and thus the channel 113 .
  • the valve core 122 can automatically close the channel 113, so that the residual liquid in the pipeline before the valve core 122 will not flow out from the channel 113, thereby reducing the leakage of the centrifugal nozzle. , to improve the environmental performance of the mobile platform.
  • the valve seat 121 defines a cavity, and the valve core 122 and the elastic member 123 are accommodated in the cavity. Two ends of the valve seat 121 are an inlet and an outlet respectively, and both the inlet and the outlet communicate with the passage 113 .
  • the centrifugal liquid spray assembly 110 includes a first pipe body 114 and a second pipe body 115 .
  • the valve seat 121 communicates with the first pipe body 114 and the second pipe body 115 .
  • the valve seat 121 , the first pipe body 114 and the second pipe body 115 form the channel 113 .
  • the valve seat 121 is detachably connected to the centrifugal liquid spray assembly 110, and when the valve seat 121 is damaged, it can be easily disassembled and replaced.
  • valve core 122 and the elastic member 123 may be made of anti-corrosion materials or have anti-corrosion layers on their surfaces.
  • the valve core 122 and the elastic member 123 can be made of stainless steel.
  • the first pipe body 114 is provided with a liquid inlet
  • the second pipe body 115 is provided with a liquid outlet. From the liquid inlet to the liquid outlet, the diameter of the channel 113 is gradually reduced to increase the pressure of the liquid flow in the channel 113 .
  • the inlet of the valve seat 121 is communicated with the liquid inlet, and the outlet of the valve seat 121 is communicated with the liquid outlet.
  • the channel 113 may be linear.
  • the axial direction of the valve seat 121 , the axial direction of the first pipe body 114 and the axial direction of the second pipe body 115 are all located on the same straight line.
  • Two ends of the valve seat 121 are respectively connected with the first pipe body 114 and the second pipe body 115 .
  • one end of the valve seat 121 is sleeved outside one end of the second pipe body 115
  • the first pipe body 114 is also sleeved outside the other end of the valve seat 121 .
  • the diameter of the first pipe body 114 is larger than that of the valve seat 121
  • the diameter of the valve seat 121 is larger than the diameter of the second pipe body 115 .
  • valve seat 121 may also be integrally formed in the channel 113 of the centrifugal liquid spray assembly 110 .
  • the valve seat 121 may be integrally formed with the first pipe body 114 or the second pipe body 115 . It can be understood that, in other embodiments, the first pipe body 114 and the second pipe body 115 are integral structures, and the first pipe body 114 and the second pipe body 115 directly form the channel 113, and the valve seat 121 can be fixedly connected to the channel 113.
  • the outer side wall of the valve seat 121 is completely in close contact with the inner side wall of the channel 113, and there is no gap through which liquid can pass between the two.
  • the valve seat 121 includes a guide portion 1211 and a constriction portion 1212 .
  • the valve core 122 and the elastic member 123 are accommodated in the guide portion 1211 .
  • the valve core 122 slides along the guide portion 1211 , the constricted portion 1212 is provided at one end of the guide portion 1211 , and the diameter of the constricted portion 1212 is smaller than that of the guide portion 1211 .
  • the valve core 122 can seal against one end of the constricted portion 1212 , and the other end of the constricted portion 1212 is the valve port 124 .
  • the valve core 122 is sealed with the constricted portion 1212 to close the valve port 124 .
  • the outer surface of the valve core 122 is a spherical surface, and the abutting surface of the constricted portion 1212 against the valve core 122 is matched with the spherical surface.
  • the valve core 122 is spherical.
  • the surface of the valve core 122 is a convex spherical surface, and the abutting surface of the constricted portion 1212 is also a concave spherical surface.
  • the convex spherical surface matches the concave spherical surface to keep the valve port 124 closed.
  • the valve core 122 can move relative to the valve seat 121 under the action of the hydraulic pressure in the channel 113 to open the valve port 124 , thereby conducting the channel 113 , and the liquid flow can flow out through the channel 113 .
  • the inner wall of the cavity of the valve seat 121 is provided with a guide groove 1213 .
  • the guide groove 1213 extends from the inlet to the outlet of the valve seat 121 .
  • the guide grooves 1213 are a plurality of wire grooves opened along the axial direction of the valve seat 121 .
  • the plurality of guide grooves 1213 are evenly distributed on the inner side wall of the valve seat 121 .
  • the diversion groove 1213 can enhance the fluidity of the channel 113 to ensure that the liquid flow can smoothly flow through the valve seat 121 .
  • the elastic member 123 is mechanically coupled with the valve core 122 .
  • the elastic member 123 and the valve core 122 may be mechanically coupled by limiting resistance, or the elastic member 123 and the valve core 122 may also be mechanically coupled through different connection methods.
  • the elastic member 123 is cylindrical.
  • the elastic member 123 is elastically deformed along its axial direction.
  • the elastic member 123 may be a spring, a rubber tube, or the like.
  • the elastic member 123 is limited between the valve core 122 and the outlet of the valve seat 121 . Then, under the action of hydraulic pressure in the channel 113 of the valve core 122, the elastic member 123 is squeezed to shrink the elastic member 123, and the elastic member 123 contracts along the guide portion 1211; the valve core 122 is automatically reset under the force of the elastic member 123, and the elastic member 123 Extend along the guide portion 1211 to restore the original length.
  • the elastic member 123 may be a compression spring.
  • the elastic member 123 may also be limited between the inlet of the valve seat 121 and the valve core 122 . Under the action of the hydraulic pressure in the channel 113 of the valve core 122 of the elastic member 123, the elastic member 123 is elongated, and the elastic member 123 extends along the guide portion 1211; the valve core 122 is automatically reset under the force of the elastic member 123, and the elastic member 123 extends along The guide portion 1211 is contracted to restore its original length.
  • the inner cavity of the guide portion 1211 is adapted to the shape of the elastic member 123 , and the elastic member 123 is stably contracted along the guide portion 1211 .
  • the centrifugal nozzle 200 of the second embodiment is basically the same as the centrifugal nozzle 100 of the first embodiment, the difference is that in the second embodiment, the valve seat 221 is provided on one side of the channel 213 .
  • the valve port 224 is located at the top of the valve seat 221 , faces the passage 213 , and can communicate with the passage 213 .
  • the bottom end of the valve seat 221 faces the outside of the casing 211 of the centrifugal liquid spray assembly 210 .
  • the channel 213 may be curved.
  • the centrifugal liquid spray assembly 210 includes a first tube body 214 and a second tube body 215 .
  • the first tube body 214 includes a first bending portion 2141
  • the second tube body 215 includes a second bending portion 2151 .
  • the valve seat 221 is disposed at the connection between the first bending portion 2141 and the second bending portion 2151 , and both the first bending portion 2141 and the second bending portion 2151 are connected to and communicate with the top of the valve seat 221 .
  • the first bending part 2141 and the second bending part 2151 can change the shape of the channel 113 . It can be understood that the channel parts of the first bending part 2141 and the second bending part 2151 can be arranged perpendicular to other channel parts, or arranged at an included angle.
  • the valve seat 221 is provided with a cavity.
  • the valve core 222 is provided on the top of the cavity and isolates the cavity.
  • the valve core 222 isolates the cavity, which can protect the components in the cavity from being corroded by the circulating liquid in the channel 213 .
  • the valve core 222 may be made of an anti-corrosion material or have an anti-corrosion layer on the surface thereof.
  • the valve core 222 includes a fixing portion 2221 and a deforming portion 2222 .
  • the fixing portion 2221 is located at the periphery of the deforming portion 2222 , and the fixing portion 2221 is fixed on the top of the valve seat 221 .
  • the fixing portion 2221 may be annular, and the annular fixing member fits with the top of the valve seat 221 .
  • the top of the valve seat 221 is formed with a receiving groove 2213 which is matched with the fixing portion 2221 .
  • the fixing portion 2221 is accommodated in the accommodating groove 2213 to limit the position of the fixing portion 2221 .
  • the deformation portion 2222 is capable of telescopic deformation along the axial direction of the valve seat 221 , and the telescopic deformation causes the elastic member 223 to elastically deform.
  • the deformation part 2222 may be located in the middle of the fixing part 2221 to facilitate elastic deformation.
  • the deformation portion 2222 and the fixing portion 2221 are integrally formed.
  • the valve core 222 may be an elastic diaphragm structure.
  • the above centrifugal nozzle 200 further includes a valve stem 225, and the valve stem 225 is at least partially accommodated in the cavity.
  • One end of the valve rod 225 located in the cavity is the first end, and the first end of the valve rod 225 abuts against the deformation portion 2222 .
  • the other end of the valve rod 225 is the second end, and the second end of the valve rod 225 is telescopically disposed at the bottom of the valve seat 221 .
  • the elastic member 223 is sleeved on the valve stem 225 and is located in the cavity. Specifically, the first end of the valve stem 225 is provided with a convex cover 2251 . The convex cover 2251 is pressed against one end of the elastic member 223 , and the other end of the elastic member 223 is pressed against the bottom of the valve seat 221 .
  • the deformation portion 2222 of the valve core 222 can move relative to the cavity. The deformation portion 2222 pushes the first end of the valve stem 225 to move the valve stem 225 along its axial direction, so that the elastic member 223 elastically deforms along the valve stem 225 .
  • the elastic member 223 restores its elastic deformation, and drives the valve stem 225 to move in the opposite direction in the axial direction.
  • the elastic member 223 restores its elastic deformation, and the deformed portion 2222 restores its deformation, and seals with the first tube body 114 and the second tube body 115, so that the valve port 124 To close, the channel 113 is closed.
  • the elastic member 223 may be a compression spring or a rubber tube or the like.
  • the deforming portion 2222 is reset, and the deforming portion 2222 seals at least one of the first tube body 114 and the second tube body 115 , so that the channel 113 can be closed.
  • a protrusion 2223 is formed on one side of the deformation portion 2222 facing the first tube body 114 and the second tube body 115 , and the deformation portion 2222 is reset so that the protrusion 2223 can seal the first tube body 114 and/or The second pipe body 115 .
  • the protrusion 2223 can reduce the distance between the middle part of the deformation part 2222 and the first tube body 114 and the second tube body 115, and the protrusion The protrusions 2223 can more tightly seal the first tube body 114 and/or the second tube body 115 .
  • a boss 2252 is provided on the end surface of the convex cover 2251 , and the boss 2252 supports the middle of the deformation portion 2222 . Since the middle of the deformation portion 2222 is the part with the largest amount of deformation, the boss 2252 can make the valve stem 225 be pushed by the deformation portion 2222 to move in a timely manner, and can also push the deformation portion 2222 to reset completely to ensure that the valve stem 225 can smoothly push the deformation portion 2222. In addition, the boss 2252 can also maintain a relatively large pressure resistance to the deformation portion 2222 .
  • the bottom of the valve seat 221 is provided with a through hole for passing through the second end of the valve stem 225 .
  • the valve seat 221 has a positioning portion 2211 protruding toward the cavity at the through hole, the valve stem 225 is inserted through the positioning portion 2211 , and the elastic member 223 is sleeved outside the positioning portion 2211 .
  • the positioning portion 2211 can guide the movement of the valve rod 225 and the expansion and contraction of the elastic member 223 , so as to ensure that the movement of the valve rod 225 and the elastic member 223 in the valve seat 221 remains stable.
  • the valve body assembly 120 can pressurize and maintain the pressure in the channel 113, and can increase the hydraulic pressure in the channel 113 to 0.05MPa-0.2MPa. Since the flow in the channel 113 is proportional to the pressure in the channel 113, the valve body assembly 120 can further solve the problem of inconsistency in pressure and flow caused by the asymmetry of the pipeline. Therefore, the above-mentioned plurality of centrifugal spray heads 100 are communicated with the same water pump. Through the valve body assembly 120, the channels 113 of the multiple centrifugal nozzles are pressurized and maintained, so that the pressure in the multiple centrifugal nozzles will not be different due to the asymmetric pipeline layout, which will weaken the pressure caused by the pressure difference in the channels 113. Therefore, the flow rates of the plurality of centrifugal nozzles 100 in the above-mentioned spraying system are basically the same, and uniform spraying is achieved.
  • the above-mentioned movable platform controls the pressure in the channel 113 through a plurality of centrifugal nozzles, so that a plurality of centrifugal nozzles can share one pump 13, which saves the cost and reduces the space occupied by the pump.
  • the second end is provided with a pressure relief valve 23 .
  • the pressure relief valve 23 is connected with the valve stem 225 , and pulling the pressure relief valve 23 drives the valve stem 225 to expand and contract, so that the deformation portion 2222 is deformed.
  • the pressure can be released manually, so that the valve body assembly 120 can be used normally.
  • the pressure relief valve 23 is sleeved on the second end of the valve stem 225 and connected to the valve stem 225 in a limited position. When the pressure relief valve 23 is pulled, the valve stem 225 is driven to move at the same time, so that the valve core 222 can open the channel 213 to discharge air bubbles.
  • the pressure relief valve 23 is connected to the second end by a tightening screw, and a shockproof member 231 is sleeved on the tightening screw.
  • the anti-vibration member 231 may be a shock-absorbing spring, a retaining spring, a disc-shaped retaining spring, or the like. The anti-vibration member 231 can ensure that the fastening screw is stably fixed on the second end.
  • the centrifugal liquid spray assembly 110 further includes a drive device 14 and a spinner 15 , the liquid outlet of the channel 113 is connected to the spinner 15 , and the drive device is used to drive the spinner 15 to rotate, and is used to drive the spinner 15 to rotate. Provides rotational force.
  • the driving device 14 is drivingly connected to the spinner 15 for driving the spinner 15 to rotate.
  • the driving device 14 may include a rotating shaft 141 , a stator seat 142 and a rotor cover 143 .
  • the stator base 142 and the rotor cover 143 are connected relatively rotatably through the rotating shaft 141 .
  • the stator seat 142 or the rotor cover 143 is drivingly connected with the spinner 15 to drive the spinner 15 to rotate.
  • the rotating shaft 141 is a hollow shaft, and the hollow shaft is formed as a part of the channel 113 .
  • the hollow shaft can be the second pipe body 115 . It can be understood that the rotating shaft can also be a solid shaft.
  • the pipe body located in the casing 111 of the centrifugal spray assembly 110 and the pipe body in the driving device can also be communicated through the valve body assembly 120 to improve the leak-proof performance of the centrifugal spray head 100 .
  • the stator seat 142 , the rotating shaft 141 and the casing 111 are fixedly connected, and the rotor cover 143 is fixedly connected with the spinner 15 .
  • the rotor cover 143 can be sleeved outside the rotating shaft 141.
  • the material of the stator seat 142 may include at least one of the following: aluminum alloy, stainless steel, and carbon fiber.
  • the material of the rotating shaft 141 may also include at least one of the following: aluminum alloy, stainless steel, and carbon fiber.
  • Aluminum alloy, stainless steel, carbon fiber and other materials have the characteristics of corrosion resistance, and have good strength and are not easy to be damaged.
  • the rotor cover 143 and the spinner 15 can be detachably connected.
  • the connection manner between the rotor cover 143 and the spinner 15 may include at least one of the following: snap connection, screw connection, and key connection.
  • the rotor cover 143 and the spinner 15 may be fixed in the circumferential direction.
  • a protrusion may be provided on the side wall of the rotor cover 143, and a concave matched with the protrusion may be provided on the side wall of the inner hole of the spinner. Therefore, the purpose of fixing the rotor cover 143 and the spinner 15 in the circumferential direction is achieved.
  • the protrusions can also be provided on the spinner 15 and the grooves can be provided on the rotor cover 143, as long as the purpose of circumferentially fixing the two can be achieved.
  • the spinner 15 and the rotor cover 143 can also have interference fit, so that the spinner can be firmly fixed on the rotor cover 143 .
  • the spinner 15 may be removably connected to the rotor cover 143 by fasteners, such as screwed together.
  • the spinner 15 may be keyed to the rotor cover 143 and fastened by other fasteners.
  • There may be many ways to connect the spinner 15 and the rotor cover 143 or a variety of connection methods can be matched, as long as the spinner 15 and the rotor cover 143 can be fixed.
  • the rotor cover 143 and the rotating shaft 141 can be connected through a bearing 144 , and the rotor cover 143 can rotate relative to the rotating shaft 141 .
  • the rotor cover 143 can be rotated relative to the rotating shaft 141 through the bearing 144 , and the rotating force will not be brought to the rotating shaft 141 , which can effectively maintain the stability of the rotating shaft 141 .
  • the rotor cover 143 is detachably connected to the bearing.
  • the rotor cover 143 and the bearing 144 are screwed together by fasteners, or are detachably connected by snaps.
  • the slinger 15 needs to be disassembled, the rotor cover 143 and the slinger can be detached together. The disc is removed from the bearing together.
  • a spray channel may be formed inside the spinner 15 , and the spray channel communicates with the liquid outlet of the channel 113 .
  • the spinning disc 15 rotates, so that the liquid in the spray channel generates a larger centrifugal force, so that the droplets are atomized and sprayed out.
  • the spinner 15 may include an upper spinner 152 and a lower spinner 153 .
  • a spray channel is formed between the upper spinner 152 and the lower spinner 153 .
  • the spray channel can be curved or straight, the spray channel is communicated with the outside world, and the liquid enters the spray channel from the liquid outlet and is discharged in the form of small mist droplets.
  • a liquid accumulation cavity 154 is formed in the middle of the lower spinner 153 in a direction away from the upper spinner, and the liquid accumulation cavity 154 communicates with the spray channel.
  • the design of the liquid accumulation chamber 154 can facilitate the accumulation of liquid. When the spinner 15 rotates at a high speed, the liquid accumulation chamber 154 can evenly and fully throw out the droplets due to the sufficient liquid accumulated in the liquid accumulation chamber 154 to achieve high-quality spraying.
  • the spinners 15 may include various types, and the centrifugal liquid spray assembly 110 can be selectively connected to one of the spinners 15 for spraying, which has good versatility.
  • a sealing member 145 may be provided below the bearing 144 and between the rotor cover 143 and the rotating shaft 141 . Seals 145 are used to prevent backflow of liquid into the bearing.
  • the sealing member 145 can be a skeleton seal, which includes a rigid support body and an elastic sealing body. The rigid support body provides a supporting force, and the elastic sealing body is used to seal the connection gap, so as to ensure the structural strength and achieve better sealing. The seal prevents the liquid from flowing back into the bearing, which can effectively protect the bearing and prevent the bearing 144 from being damaged.
  • the ESC 16 may be fixed in the receiving cavity of the housing 111 .
  • the ESC 16 can be sealed in the centrifugal liquid spray assembly 110 , specifically, can be arranged in the receiving cavity through fasteners.
  • the ESC 16 is electrically connected to the driving device 14 for adjusting the rotational speed of the driving device 14 .
  • the ESC 16 is specifically used to adjust the speed of the motor.
  • the ESC 16 can be connected by a wire, one end of the wire can be located in the casing 111 and connected to the ESC 16 , and the other end of the wire can pass through the casing 111 and go out from the top of the casing 111 .
  • the ESC 16 can drive the motor through PWM wave modulation.
  • the ESC 16 can also be connected to the water pump 103a with an electrical signal.
  • the electric control board 16 can control the water pump 103a and the driving device 14 of the centrifugal nozzle 100 to start working at the same time, or/and also stop working at the same time.
  • the water pump 103a and the driving device 14 of the centrifugal nozzle 100 work at the same time, or/and stop working at the same time, so that the phenomenon of dripping can be avoided.

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Abstract

一种离心喷头及可移动平台。离心喷头包括离心喷液组件及阀体组件。离心喷液组件包括用于流通液体的通道。阀体组件包括阀座、阀芯及弹性件，阀座设有与通道连通的阀口，阀芯可活动地设于阀座，用于密封阀口；弹性件与阀芯机械耦合。在离心喷头处于工作状态时，阀芯至少部分能够在通道内的液压作用下相对于阀座运动以打开阀口，从而导通通道，并阀芯促使弹性件发生弹性形变；在离心喷头处于停止工作状态时，阀芯在弹性件的作用力下自动复位，以封闭阀口，从而关闭通道。上述离心喷头及可移动平台能够有效减少漏滴现象。

Description

离心喷头及可移动平台 技术领域
本发明涉及农药喷洒设备，特别涉及一种离心喷头及可移动平台。
背景技术
随着环保要求的提高，喷洒系统对农药漏滴的标准越来越严格。
喷洒系统通过水泵将药液泵入管路，经管路传导至离心喷头处。离心喷头再利用电机驱动甩盘转动，借助甩盘的离心力将药液甩出。在离心喷头停喷的时刻，管路内残留的药液由于重力、惯性等，会继续流向离心喷头，并且离心喷头的电机及甩盘的转速降到零还需要缓冲一段时间。因此，当停喷后，离心喷头还会有药液继续喷出。
因此，上述传统离心喷头的漏滴现象较为严重，不仅浪费了较多药液，也对环境造成污染。
发明内容
本发明提供一种能够有效减少漏滴现象的离心喷头及可移动平台。
一种离心喷头，包括：
离心喷液组件，包括用于流通液体的通道；以及
阀体组件，包括阀座、阀芯及弹性件，所述阀座设有与所述通道连通的阀口，所述阀芯可活动地设于所述阀座，用于密封所述阀口；所述弹性件与所述阀芯机械耦合；
其中，在所述离心喷头处于工作状态时，所述阀芯至少部分能够在所述通道内的液压作用下相对于所述阀座运动以打开所述阀口，从而导通所述通道，并所述阀芯促使所述弹性件发生弹性形变；在所述离心喷头处于停止工作状态时，所述阀芯在所述弹性件的作用力下自动复位，以封闭所述阀口，从而关闭所述通道。
在其中一实施方式中，所述阀座一体成型于所述离心喷液组件的通道内；
或者，所述阀座与所述离心喷液组件可拆卸连接。
在其中一实施方式中，所述阀芯挤压所述弹性件使所述弹性件收缩，并使所述通道导通。
在其中一实施方式中，所述通道为直线型或曲线形。
在其中一实施方式中，所述离心喷液组件包括第一管体及第二管体，所述阀座连通所述第一管体与所述第二管体，所述阀座、所述第一管体及所述第二管体形成所述通道。
在其中一实施方式中，所述阀座的轴向、所述第一管体的轴向与所述第二管体的轴向均位于同一直线上，所述阀座的两端分别与所述第一管体及所述第二管体连接。
在其中一实施方式中，所述阀座开设有空腔，所述阀座的两端分别为入口及出口，所述入口及所述出口均与所述通道连通，所述阀芯及所述弹性件收容于所述空腔内。
在其中一实施方式中，所述空腔的内侧壁开设有导流槽，所述导流槽由所述阀座的入口延伸至所述出口。
在其中一实施方式中，所述阀座包括导向部及缩口部，所述阀芯及所述弹性件收容于所述导向部内，所述阀芯沿所述导向部滑动，所述缩口部设于所述导向部的一端，所述缩口部的口径小于所述导向部的口径，所述阀芯能够与所述缩口部密封抵持。
在其中一实施方式中，所述阀芯的外表面为球面，所述缩口部与所述阀芯相抵持的抵持面与所述球面相适配。
在其中一实施方式中，所述导向部的内腔与所述弹性件的形状相适配，所述弹性件沿所述导向部平稳收缩。
在其中一实施方式中，所述阀芯为球状。
在其中一实施方式中，所述阀座设于所述通道的一侧，所述阀口位于阀座的顶端，朝向所述通道，并能够与所述通道连通，所述阀座的底端朝向所述离心喷液组件的外侧。
在其中一实施方式中，所述离心喷液组件包括第一管体及第二管体，所述第一管体包括第一弯折部，所述第二管体包括第二弯折部，所述阀座设于所述第一弯折部及所述第二弯折部的连接处，所述第一弯折部与所述第二弯折部均与所述阀座的顶端连接并连通。
在其中一实施方式中，所述阀座开设有空腔，所述阀芯设于所述空腔的顶部并将所述空腔隔离，所述弹性件位于所述空腔内，所述阀芯的部分能够沿对于所述空腔运动，使所述弹性件发生弹性形变。
在其中一实施方式中，所述阀芯包括固定部及形变部，所述固定部位于所述形变部的周缘，所述固定部固定设于所述阀座的顶部上，所述形变部能够沿所述阀座的轴向发生伸缩形变，所述伸缩形变使所述弹性件发生弹性形变。
在其中一实施方式中，所述形变部与所述固定部为一体结构。
在其中一实施方式中，当所述液体冲击所述形变部，所述形变部朝向所述空腔拱起，所述形变部与所述第一管体与所述第二管体之间形成间隙，所述间隙使所述通道导通。
在其中一实施方式中，所述形变部朝向所述第一管体与所述第二管体的一侧面上形成有凸起，所述形变部复位使所述凸起能够密封所述第一管体及/或所述第二管体。
在其中一实施方式中，所述阀座的顶部形成有与所述固定部相适配的收容槽，所述固定部收容于所述收容槽内。
在其中一实施方式中，还包括阀杆，所述阀杆至少部分收容于所述空腔内，所述阀杆的第一端与所述形变部相抵持，所述阀杆的第二端可伸缩设于所述阀座的底部，所述弹性件套设于所述阀杆上，所述形变部通过推动所述阀杆的第一端，使所述阀杆沿其轴向移动，所述弹性件发生弹性形变。
在其中一实施方式中，所述阀杆的第一端设有凸盖，所述凸盖抵持所述弹性件的一端，所述弹性件的另一端抵持于所述阀座的底部。
在其中一实施方式中，所述阀杆的第一端的端面上设有凸台，所述凸台顶持所述形变部的中部。
在其中一实施方式中，所述阀座的底部开设有用于穿过所述阀杆的第二端的通孔，所 述阀座于所述通孔处朝向所述空腔内凸设有定位部，所述阀杆穿设于所述定位部内，所述弹性件套设于所述定位部外。
在其中一实施方式中，所述第二端设有泄压阀，所述泄压阀与所述阀杆连接，拉动所述泄压阀带动所述阀杆伸缩，使所述形变部形变。
在其中一实施方式中，所述泄压阀通过紧固螺钉与所述第二端连接，所述紧固螺钉上套设有防震件。
在其中一实施方式中，所述阀芯为弹性膜片结构。
在其中一实施方式中，所述弹性件为柱状，所述弹性件沿其轴向发生弹性形变。
在其中一实施方式中，所述离心喷液组件还包括驱动装置及甩盘，所述通道的出液口连通所述甩盘，所述驱动装置用于驱动所述甩盘转动，所述甩盘将所述液体甩出。
一种可移动平台，包括：机架及设于所述机架的一个或多个喷洒系统，所述喷洒系统包括：水泵、水箱、管路、以及离心喷头，所述水泵用于将水箱内的液体通过所述管路输送至所述离心喷头。
在其中一实施方式中，多个所述离心喷头与同一个所述水泵相连通。
在其中一实施方式中，所述水泵与所述离心喷头同时开始工作，或/及同时停止工作。
上述离心喷头在使用过程中，当喷洒打开的时候，通道内液流形成压力差，推动阀芯运动，并使弹性件发生弹性形变。阀芯运动使通道导通，实现离心喷头的喷洒。当喷洒关闭的时候，通道内没有液流形成的压力，则弹性件恢复形变，使阀芯关闭通道。因此通道处于关闭状态，则残留在管路内的液流不会继续流动，因此可以有效减小漏滴现象。
附图说明
图1是本实施方式的离心喷头的侧视图；
图2是图1所示的离心喷头的立体图；
图3是图1所示的离心喷头的剖视图；
图4是图3所示的阀座的立体图；
图5是另一实施方式的离心喷头的立体图；
图6是图5所示的离心喷头的剖视图；
图7是图6所示的离心喷头的局部结构示意图；
图8是本实施方式的离心喷头的电学模块示意图；
图9是本实施方式的无人机的结构示意图。
附图标记：
10、无人机；101、机架；103、喷洒系统；103a、水泵；103b、水箱；103c、管路；
100、离心喷头；110、离心喷液组件；111、壳体；112、收容腔；113、通道；114；第一管体；115、第二管体；
120、阀体组件；
121、阀座；1211、导向部；1212、缩口部；1213、导流槽；122、阀芯；123、弹性件；124、阀口；
200、离心喷头；210、离心喷液组件；213、通道；214、第一管体；2141、第一弯折部；215、第二管体；2151、第二弯折部；
221、阀座；2211、定位部；2213、收容槽；222、阀芯；2221、固定部；2222、形变部；2223、凸起；223、弹性件；224、阀口；225、阀杆；2251、凸盖；2252、凸台；23、泄压阀；231、防震件；
14、驱动装置；141、转轴；142、定子座；143、转子盖；144、轴承；145、密封件；15、甩盘；152、上甩盘；153、下甩盘；154、积液腔；16、电调板。
具体实施方式
体现本发明特征与优点的典型实施方式将在以下的说明中详细叙述。应理解的是本发明能够在不同的实施方式上具有各种的变化，其皆不脱离本发明的范围，且其中的说明及图示在本质上是当作说明之用，而非用以限制本发明。
由于驱动甩盘旋转的电机由高速旋转降速到转速为零时需要一定时间，同时，由于甩盘具有一定的惯性，导致传统的离心喷头在停喷后还会发生漏滴现象。不仅浪费了药液，并且还对环境造成污染。本实施例提供的离心喷头可以用于可移动平台，例如无人机、农药喷洒车、人力喷洒装置等。无人机可以是农业植保无人机。当该离心式喷头用于无人机，离心喷头可以根据无人机的速度很好调节流量，可以驱动喷液装置排出液体，将药液甩出去，形成雾滴。
本实施例以无人机为例进说明。请参阅图9，本实施例的无人机10包括机架101及设于机架101的一个或多个喷洒系统103。喷洒系统103包括水泵103a、水箱103b、管路103c、以及多个离心喷头100。水泵103a用于将水箱103b内的液体通过管路输送至离心喷头100。多个离心喷头100可以与同一个水泵103a相连通。
上述喷洒系统103可以实现在无人机中只用一个水泵就可带动多个离心喷头。且实现各个离心喷头之间分别独立控制各个离心喷头100的流量控制，保证各个离心喷头的喷量均匀，克服了传统可移动平台上的水泵数量与离心喷头数量必须相匹配而造成的冗余、高成本。
请参阅图1、图2及图3，本实施方式的一种离心喷头100包括离心喷液组件110、阀体组件120。
离心喷液组件110可以包括壳体111。壳体111形成有收容腔112。收容腔112内形成有用于流通液体的通道113。通道113至少部分可以设于收容腔内。
通道113至少部分可以由管体形成，或者通道113也可以为开设于壳体111内部的槽体结构。此处对通道113的具体形成方式不做限定，只要离心喷液组件110的内部形成有用于流通液体的通道113即可。可以理解，通道113可以为软管、水管、PVC管等。具 体在本实施方式中，通道113为用于与水泵连接的水泵连接管。
通道113可以为直线型或曲线形。通道113可以根据液体走向需求及空间布局需求，进行相应实际。
阀体组件120包括阀座121、阀芯122及弹性件123。阀座121设有与通道113连通的阀口124，阀芯122可活动地设于阀座121，用于密封阀口124。弹性件123与阀芯122机械耦合。阀芯122运动从而带动弹性件123形变。
在离心喷头100处于工作状态时，阀芯122至少部分能够在通道113内的液压作用下相对于阀座121运动以打开阀口124，从而导通通道113，并阀芯122促使弹性件123发生弹性形变。阀芯122可以全部在通道113内运动，也可以部分在通道113内运动。阀芯122的运动可以为上下滑动、收缩运动等。在离心喷头处于停止工作状态时，阀芯122在弹性件123的作用力下自动复位，以封闭阀口124，从而关闭通道113。
上述离心喷头100在停止工作的时候，阀芯122能够自动将通道113封闭，从而位于阀芯122之前的管路内的残留液体不会从通道113内流出，减小上述离心喷头的漏滴量，提高移动平台的环保性能。
阀座121开设有空腔，阀芯122及弹性件123收容于空腔内。阀座121的两端分别为入口及出口，入口及出口均与通道113连通。具体地，离心喷液组件110包括第一管体114及第二管体115。阀座121连通第一管体114与第二管体115。阀座121、第一管体114及第二管体115形成通道113。或者，阀座121与离心喷液组件110可拆卸连接，当阀座121损坏的时候，可以实现方便拆卸、更换。
并且，阀芯122及弹性件123可以为防腐材料制成或其表面具有防腐层等。例如，阀芯122及弹性件123可以为不锈钢材料。
第一管体114设有进液口，第二管体115设有出液口。从进液口到出液口，通道113的口径逐渐缩小，以增强通道113内液流的压强。阀座121的入口与进液口连通，阀座121的出口与出液口连通。
具体在本实施方式中，通道113可以为直线型。阀座121的轴向、第一管体114的轴向与第二管体115的轴向均位于同一直线上。阀座121的两端分别与第一管体114及第二管体115连接。具体地，阀座121的一端套设于第二管体115的一端外侧，第一管体114也是套设于阀座121的另一端的外侧。第一管体114的口径大于阀座121的口径，阀座121的口径大于第二管体115的口径，随着液体的流动，有利于对通道113内液流的进行加压。
在其他实施方式中，阀座121还可以一体成型于离心喷液组件110的通道113内。阀座121可以与第一管体114或第二管体115一体成型。可以理解，在其他实施方式中，第一管体114和第二管体115为一体结构，第一管体114与第二管体115直接形成该通道113，则阀座121可以固定连接与通道113内。并且阀座121的外侧壁与通道113的内侧壁完全紧贴，两者之间不存在可以通过液体的缝隙。
具体在本实施方式中，阀座121包括导向部1211及缩口部1212。阀芯122及弹性件123收容于导向部1211内。阀芯122沿导向部1211滑动，缩口部1212设于导向部1211的一端，缩口部1212的口径小于导向部1211的口径。阀芯122能够与缩口部1212的一端密封抵持，缩口部1212的另一端为阀口124。阀芯122与缩口部1212密封，以封闭阀口124。阀芯122的外表面为球面，缩口部1212与阀芯122相抵持的抵持面与球面相适配。阀芯122为球状。阀芯122的表面为凸球面，则缩口部1212的抵持面也为凹球面。凸球面与凹球面相适配，保持阀口124封闭。
阀芯122能够在通道113内的液压作用下相对于阀座121运动以打开阀口124，从而导通通道113，则液流即可以经通道113流出。请参阅图4，并且，阀座121的空腔的内侧壁开设有导流槽1213。导流槽1213由阀座121的入口延伸至出口。导流槽1213为多个沿阀座121的轴向开设的线槽。多个导流槽1213在阀座121的内侧壁上均匀分布。导流槽1213可以增强通道113的流通性，保证液流能够顺利流经阀座121。
请再次参阅图3，弹性件123与阀芯122机械耦合。弹性件123与阀芯122可以通过限位抵持形成机械耦合，或者，弹性件123与阀芯122还可以通过不同的连接方式实现机械耦合。具体地，弹性件123为柱状。弹性件123沿其轴向发生弹性形变。弹性件123可以为弹簧、胶管等。
具体在本实施方式中，弹性件123限位于阀芯122与阀座121的出口之间。则阀芯122通道113内的液压作用下，挤压弹性件123使弹性件123收缩，弹性件123沿导向部1211进行收缩；阀芯122在弹性件123的作用力下自动复位，弹性件123沿导向部1211进行伸长恢复原长。弹性件123可以为压缩弹簧。
在其他实施方式中，弹性件123还可以限位于阀座121的入口与阀芯122与之间。弹性件123阀芯122通道113内的液压作用下，弹性件123被拉长，弹性件123沿导向部1211进行伸长；阀芯122在弹性件123的作用力下自动复位，弹性件123沿导向部1211收缩恢复原长。
具体地，导向部1211的内腔与弹性件123的形状相适配，弹性件123沿导向部1211平稳收缩。
请参阅图5及图6，实施方式二的离心喷头200与实施方式一的离心喷头100基本相同，其不同之处在于：在第二实施方式中，阀座221设于通道213的一侧。阀口224位于阀座221的顶端，朝向所述通道213，并能够与所述通道213连通。阀座221的底端朝向离心喷液组件210的壳体211外侧。
请参阅图6及图7，具体在本实施方式中，通道213可以为曲线形。离心喷液组件210包括第一管体214及第二管体215，第一管体214包括第一弯折部2141，第二管体215 包括第二弯折部2151。阀座221设于第一弯折部2141及第二弯折部2151的连接处，第一弯折部2141及第二弯折部2151均与阀座221的顶端连接并连通。第一弯折部2141及第二弯折部2151的可以对通道113的形状进行改变。可以理解，第一弯折部2141及第二弯折部2151的通道部分可以与其它通道部分相垂直设置，或呈夹角设置。
阀座221开设有空腔。阀芯222设于空腔的顶部并将空腔隔离。阀芯222将空腔隔离，可以对空腔内的元件进行保护，避免被通道213内的流通液体腐蚀。并且，阀芯222可以为防腐材料制成或其表面具有防腐层等。
阀芯222包括固定部2221及形变部2222。固定部2221位于形变部2222的周缘，固定部2221固定设于阀座221的顶部上。固定部2221可以为环形，环形的固定件与阀座221的顶部相适配。并且，阀座221的顶部形成有与固定部2221相适配的收容槽2213。固定部2221收容于收容槽2213内，对固定部2221进行限位。
形变部2222能够沿阀座221的轴向发生伸缩形变，伸缩形变使弹性件223发生弹性形变。形变部2222可以位于固定部2221的中部，便于发生弹性形变。
形变部2222与固定部2221为一体结构。具体地，阀芯222可以为弹性膜片结构。
当通道213内的液压冲击形变部2222，形变部2222朝向空腔拱起，则形变部2222与第一管体214与第二管体215之间形成间隙，间隙使阀口224打开，导通通道213，则在通道213内形成液流。
上述离心喷头200还包括阀杆225，阀杆225至少部分收容于空腔内。阀杆225位于空腔内的一端为第一端，阀杆225的第一端与形变部2222相抵持。阀杆225的另一端为第二端，阀杆225的第二端可伸缩设于阀座221的底部。
弹性件223套设于阀杆225上，且位于空腔内。具体地，阀杆225的第一端设有凸盖2251。凸盖2251抵持弹性件223的一端，弹性件223的另一端抵持于阀座221的底部。阀芯222的形变部2222能够相对于空腔拱起运动，形变部2222通过推动阀杆225的第一端，使阀杆225沿其轴向移动，使弹性件223沿阀杆225发生弹性形变。弹性件223恢复弹性形变，带动阀杆225沿轴向反向移动，弹性件223恢复弹性形变，形变部2222恢复形变，与第一管体114与第二管体115密封封闭，使阀口124封闭，关闭通道113。弹性件223可以为压缩弹簧或胶管等。
形变部2222复位，形变部2222至少密封第一管体114、第二管体115之一，即可关闭通道113。请参阅图7，并且，形变部2222朝向第一管体114与第二管体115的一侧面上形成有凸起2223，形变部2222复位使凸起2223能够密封第一管体114及/或第二管体115。由于形变部2222的中部为形变量最大的部位，当形变部2222复位的时候，凸起2223能够减小形变部2222的中部与第一管体114与第二管体115之间的距离，凸起2223能够更紧固的密封第一管体114及/或第二管体115。
并且，凸盖2251的端面上设有凸台2252，凸台2252顶持形变部2222的中部。由于 形变部2222的中部为形变量最大的部位，凸台2252可以使阀杆225更为及时的受形变部2222的推动而运动，并且还可以为保证阀杆225顺利推动形变部2222完全复位，并且凸台2252还可以对形变部2222保持较大的压力抵持。
阀座221的底部开设有用于穿过阀杆225的第二端的通孔。阀座221于通孔处朝向空腔内凸设有定位部2211，阀杆225穿设于定位部2211内，弹性件223套设于定位部2211外。定位部2211可以对阀杆225的运动及弹性件223的伸缩起到导向作用，保证阀杆225与弹性件223在阀座221内的运动保持稳定。
上述阀体组件120可以对通道113内进行加压保压，可以将通道113内的液压提高至0.05MPa-0.2MPa。由于通道113内的流量与通道113内的压力成正比，通过上述阀体组件120进而可以解决由于管路不对称导致的压力和流量的不一致问题。因此，上述多个离心喷头100与同一个水泵相连通。通过阀体组件120对多个离心喷头的通道113进行加压保压，多个离心喷头内的压力不会由于管路布局不对称而导致通道113内压力不同，削弱通道113压力差带来的影响，因此，上述喷洒系统的多个离心喷头100的流量基本一致，实现均匀喷洒。
并且，上述可移动平台通过多个离心喷头对通道113内压力控制，可以实现多个离心喷头共用一个泵13，节约了成本，减少泵的占用空间
第二端设有泄压阀23。泄压阀23与阀杆225连接，拉动泄压阀23带动阀杆225伸缩，使形变部2222形变。当通道113内存在气泡时，可以通过手动泄压排气，从而可以使阀体组件120可以正常使用。具体地，泄压阀23套设于阀杆225的第二端上，并与阀杆225限位连接。当拉动泄压阀23的时候，同时带动阀杆225运动，从而可以使阀芯222打开通道213，使气泡排出。
泄压阀23通过紧固螺钉与第二端连接，紧固螺钉上套设有防震件231。防震件231可以为减震弹簧、卡簧、碟形卡簧等。防震件231可以保证紧固螺钉稳定固定于第二端上。
上述可移动平台的喷洒系统中，当喷洒系统的管路内无压力时，通过离心喷头100的阀体组件120，离心喷头10处于关闭状态，则喷洒系统内的残余液体不会流通到出液口处，从而不会发生漏滴现象。只有当喷洒系统开启时，阀芯222被顶开，液流流过通道113，实现喷洒。
请参阅图3或图6，离心喷液组件110还包括驱动装置14及甩盘15，通道113的出液口连通甩盘15，驱动装置用于驱动甩盘15转动，用于对甩盘15提供旋转力。
驱动装置14与甩盘15驱动连接，用于驱动甩盘15旋转。
请参阅图3，驱动装置14可以包括转轴141、定子座142和转子盖143。定子座142与转子盖143通过转轴141实现相对可转动连接。定子座142或转子盖143与甩盘15驱动连接，以驱动甩盘15转动。
具体在本实施方式中，转轴141为空心轴，该空心轴形成为通道113的一部分。该空心轴可以为第二管体115。可以理解，转轴也可以为实心轴。
位于离心喷液组件110的壳体111内的管体与驱动装置内的管体同样也可以通过阀体组件120连通，提高离心喷头100的防漏性能。
定子座142、转轴141和壳体111固定连接，转子盖143与甩盘15固定连接。转子盖143可以套设在转轴141外，当驱动装置上电时，转轴141与定子座142作为定子保持不动，转子盖143相对于转轴141高速转动，进而带动甩盘15高速转动，甩盘15中的液体产生较大的离心力，而以较大区域呈雾状喷洒出去。
其中，定子座142的材料可以包括如下至少一种：铝合金、不锈钢、碳纤维。转轴141的材料也可以包括如下至少一种：铝合金、不锈钢、碳纤维。铝合金、不锈钢、碳纤维等材料具有耐腐蚀的特性，且强度好，不易损坏。
转子盖143与甩盘15可以可拆卸连接。具体的，转子盖143与甩盘15的连接方式可以包括如下至少一种：卡接、螺接、键连接。具体地，转子盖143与甩盘15可以周向固定，具体的，在转子盖143的侧壁上可以设有凸起，在甩盘的内孔侧壁上可以设有与凸起配合的凹槽，由此，达到转子盖143与甩盘15周向固定的目的。当然，凸起还可以设于甩盘15上，凹槽设于转子盖143上，只要能实现两者周向固定的目的即可。另外，甩盘15与转子盖143还可以过盈配合，以使得甩盘能够牢牢固定在转子盖143上。在其他实施例中，甩盘15可以与转子盖143通过紧固件可拆卸连接，例如螺接在一起。或者，甩盘15可以与转子盖143通过键连接在一起，并通过其他紧固件进行紧固。甩盘15与转子盖143的连接方式可以有很多种，或者多种连接方式配合均可，只要能实现甩盘15与转子盖143固定即可。
进一步的，转子盖143与转轴141可以通过轴承144连接，转子盖143能够相对于转轴141旋转。通过轴承144可以实现转子盖143相对于转轴141旋转，并且不会将旋转作用力带给转轴141，能够有效保持转轴141的稳定。转子盖143与轴承可拆卸地连接，例如，转子盖143与轴承144通过紧固件螺接，或者，通过卡扣可拆卸连接，当需要将甩盘15拆卸时，可以将转子盖143连同甩盘一起从轴承上拆卸下来。
甩盘15的内部可以形成有喷洒通道，喷洒通道与通道113的出液口连通。甩盘15旋转，以使得喷洒通道的液体产生较大的离心力，从而将液滴雾化喷出。
甩盘15可以包括上甩盘152和下甩盘153。上甩盘152和下甩盘153之间形成喷洒通道。喷洒通道可以呈曲线型或直线型，喷洒通道与外界连通，液体从出液口进入喷洒通道后以雾状小液滴形式排出。
下甩盘153的中部向远离上甩盘的方向凹陷形成有积液腔154，积液腔154与喷洒通道连通。积液腔154的设计可以有利于液体的聚集，在甩盘15高速转动时，积液腔154内由于聚集的液体足够，从而可以均匀充分地将液滴甩出，实现高质量喷洒。
甩盘15可以包括多种类型，离心喷液组件110可选择性地与其中一个甩盘15连接进行喷洒，通用性较好。更进一步的，在轴承144的下方、且在转子盖143与转轴141之间可以设有密封件145。密封件145用于阻止液体回流至轴承中。密封件145具体可以为骨架密封，其包括刚性支撑体和弹性密封体，刚性支撑体提供支撑力，弹性密封体用于密封连接间隙，从而在保证结构强度的同时，实现较好的密封，通过密封件阻止液体回流到轴承中，能够有效保护轴承，防止轴承144损坏。
请参阅图3或图6，另外，壳体111的收容腔内可以固定有电调板16。电调板16可以密封设置于离心喷液组件110中，具体可通过紧固件设于收容腔中，电调板16与驱动装置14电连接，用于调节驱动装置14的旋转速度。
当驱动装置14为电机时，电调板16具体用于对电机调速。电调板16可以通过导线连接，导线一端可以位于壳体111内，且连接于电调板16，导线的另一端可以穿过壳体111，并从壳体111的顶部穿出。电调板16可以通过PWM波调制方式驱动电机。
请同时参阅图8，并且，电调板16还可以与水泵103a电信号连接。电调板16可以控制水泵103a及离心喷头100的驱动装置14可以同时开始工作，或/及，也可以同时停止工作。
水泵103a及离心喷头100的驱动装置14同时工作，或/及，同时停止工作，可以避免发生漏滴现象。
虽然已参照几个典型实施方式描述了本发明，但应当理解，所用的术语是说明和示例性、而非限制性的术语。由于本发明能够以多种形式具体实施而不脱离发明的精神或实质，所以应当理解，上述实施方式不限于任何前述的细节，而应在随附权利要求所限定的精神和范围内广泛地解释，因此落入权利要求或其等效范围内的全部变化和改型都应为随附权利要求所涵盖。

Claims (32)

  1. 一种离心喷头，其特征在于，包括：
    离心喷液组件，包括用于流通液体的通道；以及
    阀体组件，包括阀座、阀芯及弹性件，所述阀座设有与所述通道连通的阀口，所述阀芯可活动地设于所述阀座，用于密封所述阀口；所述弹性件与所述阀芯机械耦合；
    其中，在所述离心喷头处于工作状态时，所述阀芯至少部分能够在所述通道内的液压作用下相对于所述阀座运动以打开所述阀口，从而导通所述通道，并所述阀芯促使所述弹性件发生弹性形变；在所述离心喷头处于停止工作状态时，所述阀芯在所述弹性件的作用力下自动复位，以封闭所述阀口，从而关闭所述通道。
  2. 根据权利要求1所述的离心喷头，其特征在于，所述阀座一体成型于所述离心喷液组件的通道内；
    或者，所述阀座与所述离心喷液组件可拆卸连接。
  3. 根据权利要求1所述的离心喷头，其特征在于，所述阀芯挤压所述弹性件使所述弹性件收缩，并使所述通道导通。
  4. 根据权利要求1所述的离心喷头，其特征在于，所述通道为直线型或曲线形。
  5. 根据权利要求1所述的离心喷头，其特征在于，所述离心喷液组件包括第一管体及第二管体，所述阀座连通所述第一管体与所述第二管体，所述阀座、所述第一管体及所述第二管体形成所述通道。
  6. 根据权利要求5所述的离心喷头，其特征在于，所述阀座的轴向、所述第一管体的轴向与所述第二管体的轴向均位于同一直线上，所述阀座的两端分别与所述第一管体及所述第二管体连接。
  7. 根据权利要求6所述的离心喷头，其特征在于，所述阀座开设有空腔，所述阀座的两端分别为入口及出口，所述入口及所述出口均与所述通道连通，所述阀芯及所述弹性件收容于所述空腔内。
  8. 根据权利要求7所述的离心喷头，其特征在于，所述空腔的内侧壁开设有导流槽，所述导流槽由所述阀座的入口延伸至所述出口。
  9. 根据权利要求7所述的离心喷头，其特征在于，所述阀座包括导向部及缩口部，所述阀芯及所述弹性件收容于所述导向部内，所述阀芯沿所述导向部滑动，所述缩口部设于所述导向部的一端，所述缩口部的口径小于所述导向部的口径，所述阀芯能够与所述缩口部密封抵持。
  10. 根据权利要求9所述的离心喷头，其特征在于，所述阀芯的外表面为球面，所述缩口部与所述阀芯相抵持的抵持面与所述球面相适配。
  11. 根据权利要求9所述的离心喷头，其特征在于，所述导向部的内腔与所述弹性件相适配，所述弹性件沿所述导向部平稳收缩。
  12. 根据权利要求1所述的离心喷头，其特征在于，所述阀芯为球状。
  13. 根据权利要求1所述的离心喷头，其特征在于，所述阀座设于所述通道的一侧，所述阀口位于阀座的顶端，朝向所述通道，并能够与所述通道连通，所述阀座的底端朝向所述离心喷液组件的外侧。
  14. 根据权利要求13所述的离心喷头，其特征在于，所述离心喷液组件包括第一管体及第二管体，所述第一管体包括第一弯折部，所述第二管体包括第二弯折部，所述阀座设于所述第一弯折部及所述第二弯折部的连接处，所述第一弯折部与所述第二弯折部均与所述阀座的顶端连接并连通。
  15. 根据权利要求14所述的离心喷头，其特征在于，所述阀座开设有空腔，所述阀芯设于所述空腔的顶部并将所述空腔隔离，所述弹性件位于所述空腔内，所述阀芯的部分能够沿对于所述空腔运动，使所述弹性件发生弹性形变。
  16. 根据权利要求15所述的离心喷头，其特征在于，所述阀芯包括固定部及形变部，所述固定部位于所述形变部的周缘，所述固定部固定设于所述阀座的顶部上，所述形变部能够沿所述阀座的轴向发生伸缩形变，所述伸缩形变使所述弹性件发生弹性形变。
  17. 根据权利要求16所述的离心喷头，其特征在于，所述形变部与所述固定部为一体结构。
  18. 根据权利要求16所述的离心喷头，其特征在于，当所述液体冲击所述形变部，所述形变部朝向所述空腔拱起，所述形变部与所述第一管体与所述第二管体之间形成间隙，所述间隙使所述通道导通。
  19. 根据权利要求18所述的离心喷头，其特征在于，所述形变部朝向所述第一管体与所述第二管体的一侧面上形成有凸起，所述形变部复位使所述凸起能够密封所述第一管体及/或所述第二管体。
  20. 根据权利要求16所述的离心喷头，其特征在于，所述阀座的顶部形成有与所述固定部相适配的收容槽，所述固定部收容于所述收容槽内。
  21. 根据权利要求20所述的离心喷头，其特征在于，还包括阀杆，所述阀杆至少部分收容于所述空腔内，所述阀杆的第一端与所述形变部相抵持，所述阀杆的第二端可伸缩设于所述阀座的底部，所述弹性件套设于所述阀杆上，所述形变部通过推动所述阀杆的第一端，使所述阀杆沿其轴向移动，所述弹性件发生弹性形变。
  22. 根据权利要求21所述的离心喷头，其特征在于，所述阀杆的第一端设有凸盖，所述凸盖抵持所述弹性件的一端，所述弹性件的另一端抵持于所述阀座的底部。
  23. 根据权利要求21所述的离心喷头，其特征在于，所述阀杆的第一端的端面上设有凸台，所述凸台顶持所述形变部的中部。
  24. 根据权利要求21所述的离心喷头，其特征在于，所述阀座的底部开设有用于穿过所述阀杆的第二端的通孔，所述阀座于所述通孔处朝向所述空腔内凸设有定位部，所述阀杆穿设于所述定位部内，所述弹性件套设于所述定位部外。
  25. 根据权利要求21所述的离心喷头，其特征在于，所述第二端设有泄压阀，所述泄压阀与所述阀杆连接，拉动所述泄压阀带动所述阀杆伸缩，使所述形变部形变。
  26. 根据权利要求25所述的离心喷头，其特征在于，所述泄压阀通过紧固螺钉与所述第二端连接，所述紧固螺钉上套设有防震件。
  27. 根据权利要求15所述的离心喷头，其特征在于，所述阀芯为弹性膜片结构。
  28. 根据权利要求1所述的离心喷头，其特征在于，所述弹性件为柱状，所述弹性件沿其轴向发生弹性形变。
  29. 根据权利要求1所述的离心喷头，其特征在于，所述离心喷液组件还包括驱动装置及甩盘，所述通道的出液口连通所述甩盘，所述驱动装置用于驱动所述甩盘转动，所述甩盘将所述液体甩出。
  30. 一种可移动平台，其特征在于，包括：机架及设于所述机架的一个或多个喷洒系统，所述喷洒系统包括：水泵、水箱、管路、以及权利要求1-29任一项所述的离心喷头，所述水泵用于将水箱内的液体通过所述管路输送至所述离心喷头。
  31. 根据权利要求30所述的可移动平台，其特征在于，多个所述离心喷头与同一个所述水泵相连通。
  32. 根据权利要求30所述的可移动平台，其特征在于，所述水泵与所述离心喷头同时开始工作，或/及同时停止工作。
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