WO2022041357A1 - Solenoid valve for plant protection unmanned aerial vehicle, spraying system and exhaust method - Google Patents

Solenoid valve for plant protection unmanned aerial vehicle, spraying system and exhaust method Download PDF

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Publication number
WO2022041357A1
WO2022041357A1 PCT/CN2020/116477 CN2020116477W WO2022041357A1 WO 2022041357 A1 WO2022041357 A1 WO 2022041357A1 CN 2020116477 W CN2020116477 W CN 2020116477W WO 2022041357 A1 WO2022041357 A1 WO 2022041357A1
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WO
WIPO (PCT)
Prior art keywords
solenoid valve
valve
plant protection
driving gear
assembly
Prior art date
Application number
PCT/CN2020/116477
Other languages
French (fr)
Chinese (zh)
Inventor
高廉洁
任乐乐
Original Assignee
拓攻（南京）机器人有限公司
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 拓攻（南京）机器人有限公司 filed Critical 拓攻（南京）机器人有限公司
Priority to JP2022519244A priority Critical patent/JP2022549696A/en
Publication of WO2022041357A1 publication Critical patent/WO2022041357A1/en

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Classifications

    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—Valve members
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/46—Attachment of sealing rings
    • 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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/029—Electromagnetically actuated valves
    • 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0644—One-way valve
    • F16K31/0655—Lift valves
    • 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
    • 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/53—Mechanical actuating means with toothed gearing

Definitions

  • the application belongs to the technical field of unmanned aerial vehicles, and in particular relates to a solenoid valve, a spraying system and an exhaust method for plant protection unmanned aerial vehicles.
  • Plant protection drone is a kind of unmanned aerial vehicle used for agricultural and forestry plant protection operations.
  • the plant protection drone can be operated by radio remote control equipment or its own program control device to realize the spraying of agricultural and forestry plants, thereby reducing labor costs and improving spraying efficiency.
  • the spraying system of the plant protection drone usually includes a water pump connected to the medicine tank through a hose, a plurality of spray heads connected to the water pump, and a solenoid valve arranged on the hose to control the opening and closing of the liquid medicine channel.
  • the solenoid valve is a valve device controlled by the principle of electromagnetic induction. The reciprocating mechanical movement of the electromagnet is controlled by the current on and off of the electromagnetic coil to achieve the purpose of opening or closing the valve.
  • the present application provides a solenoid valve, a spraying system and an exhaust method for plant protection drones, so as to solve the problem that the solenoid valve in the related art needs to be continuously energized and consumes a large amount of electricity when it is in a working state.
  • the present application provides a solenoid valve for a plant protection drone, comprising: a valve core assembly, an adjustment assembly and an electromagnetic assembly, wherein the adjustment assembly is disposed between the valve core assembly and the electromagnetic assembly;
  • the adjustment assembly includes: a fixed shell, a driving gear, a rotating wheel, a connecting shaft and a first spring;
  • the driving gear and the rotating wheel are arranged inside the fixed casing, the two ends of the rotating wheel are respectively abutted with the driving gear and the valve core assembly, and the two ends of the driving gear are respectively contacted with the
  • the rotating wheel is in contact with the electromagnetic assembly; one end of the connecting shaft is in contact with the rotating wheel, and the other end of the connecting shaft is in contact with the driving gear; the first spring is sleeved on the driving gear On the gear; one end of the rotating wheel is provided with an inertial turntable.
  • the inner wall of the fixed shell is provided with a chute
  • the inner wall of the stationary shell is provided with a plurality of guide blocks along the circumferential direction
  • two of the guide blocks are provided between two adjacent chute
  • the drive The outer wall of the gear is provided with a sliding block matched with the chute along the circumferential direction, the end of the driving gear abutting against the rotating wheel is provided with a plurality of driving triangular teeth;
  • the outer wall of the rotating wheel is provided with a plurality of The driving block abutting against the driving triangular teeth, the driving block is located between two adjacent guide blocks;
  • the guide block is set as a right-angled trapezoid structure, including a sloped end face and a flat end face, the two guide blocks
  • the plane end faces of the guide blocks are connected to form a limit step; the contact surfaces of the drive block and the drive triangular teeth are set as inclined surfaces matched with the inclined surfaces of the guide blocks.
  • the valve core assembly includes: an inner shell, a pressing member, a valve core, a valve joint, a second spring and a corrugated gasket;
  • the pressing member is clamped between the inner casing and the fixed casing; the valve core is arranged inside the inner casing; the valve joint is arranged inside the pressing member, and the valve One end of the joint is in contact with the valve core, and the other end of the valve joint is in contact with the rotating wheel; the second spring is sleeved on the valve core, and the valve core assembly further includes a corrugated gasket , the corrugated gasket is arranged between the inner shell and the pressing member.
  • the solenoid valve further includes a casing, and the casing includes: a valve head, a first casing and a second casing;
  • valve head is set to a T-shaped structure, and the valve head includes a liquid inlet, a liquid outlet and a connection port, and the connection port is perpendicular to the connection line between the liquid inlet and the liquid outlet; One end of the first outer shell is screwed with the connection port; the other end of the first outer shell is clamped with the inner shell, and the second outer shell is screwed with the inner shell.
  • the solenoid valve further includes an elastic pressure regulating pad, the elastic pressure regulating pad is disposed between the connection port and the inner shell, and the elastic pressure regulating pad is in abutment with the valve core.
  • the fixing shell is embedded inside the second casing, the outer wall of the fixing casing is provided with a plurality of card grooves, and the inner wall of the second casing is provided with a locking block matched with the card grooves.
  • the electromagnetic assembly is disposed inside the second housing, and the electromagnetic assembly includes: an electromagnet, an electromagnetic coil, a plastic part and a buffer;
  • the electromagnet is arranged inside the second casing, the electromagnetic coil is embedded in the second casing along the circumferential direction, the plastic part is embedded at one end of the electromagnet, and the driving gear One end of the second shell is abutted in the plastic part, and the buffer pad is arranged on the inner wall of the second shell close to one end of the electromagnet.
  • the present application provides a plant protection drone spraying system, including: a medicine box, a water pump, a flow meter, a spray head, a controller and the above-mentioned solenoid valve;
  • the medicine box is connected with at least one of the water pumps, the flow meter is arranged between the medicine box and the water pump, the water pump is connected with a plurality of the spray heads, and the solenoid valve is arranged on the Between the spray head and the medicine box, the liquid inlet of the solenoid valve is connected with the liquid inlet of the spray head, and the liquid outlet of the solenoid valve is connected with the medicine box; the controller is connected with the water pump, The flow meter is connected to the solenoid valve.
  • the application provides an exhaust method for a plant protection drone spraying system, including:
  • the controller starts the water pump
  • the water pump is turned off, the solenoid valve is energized, and after the solenoid valve is closed, the solenoid valve is de-energized.
  • the time threshold is set to 3-10s.
  • the present application provides a solenoid valve, a spraying system and an exhaust method for a plant protection drone.
  • the adjustment assembly includes: a fixed shell, a driving gear, a rotating wheel, a connecting shaft and a first spring; the driving gear and the rotating wheel are arranged on the Inside the fixed shell, the two ends of the rotating wheel are respectively abutted with the driving gear and the valve core assembly, and the two ends of the driving gear are respectively abutted with the rotating wheel and the electromagnetic assembly; the connection One end of the shaft is in contact with the rotating wheel, and the other end of the connecting shaft is in contact with the driving gear; the first spring is sleeved on the driving gear.
  • the solenoid assembly can be turned on and off, and the adjustment assembly can be pushed to reciprocate, so as to drive the valve core assembly to move, so that the solenoid valve is in an open or closed state.
  • the electromagnetic assembly pushes the driving gear to move, and drives the rotating wheel to rotate in the direction of the valve core assembly, fixing the valve core assembly, so that the electromagnetic valve is in a closed state, and the electromagnetic assembly can be powered off.
  • the electromagnetic assembly pushes the driving gear to move, and drives the rotating wheel to rotate away from the valve core assembly, fixing the valve core assembly, so that the electromagnetic valve is in an open state.
  • the solenoid valve for plant protection drone provided by this application is in the working state, it is not necessary to continuously energize the electromagnetic component, and it only needs to be energized when the solenoid valve is controlled to be opened or closed. Therefore, the solenoid valve consumes less power, and can be applied to a plant protection drone spraying system to improve spraying efficiency.
  • the liquid inlet of the solenoid valve is connected with the liquid inlet of the nozzle, and the liquid outlet of the solenoid valve is connected with the medicine box.
  • the liquid medicine will flow back into the medicine tank to avoid wasting the liquid medicine.
  • it can prevent the spray generated by the liquid medicine from being inhaled by the operator, which affects the health of the operator.
  • FIG. 1 is a structural cross-sectional view of an embodiment of a solenoid valve used in a plant protection drone in the present application
  • Fig. 2 is a structural disassembly diagram of an embodiment of the solenoid valve used for the plant protection unmanned aerial vehicle in the present application;
  • FIG. 3 is a structural cross-sectional view of an embodiment of an adjustment assembly in a solenoid valve used in a plant protection drone according to the present application;
  • FIG. 4 is a schematic structural diagram of an embodiment of a fixed shell in a solenoid valve used for plant protection drones according to the present application;
  • FIG. 5 is a schematic structural diagram of an embodiment of a driving gear in a solenoid valve for a plant protection drone according to the present application
  • FIG. 6 is a schematic structural diagram of an embodiment of a rotating wheel in a solenoid valve used for plant protection drones according to the present application;
  • FIG. 7 is a structural cross-sectional view of an embodiment of a valve core assembly in a solenoid valve for a plant protection drone;
  • FIG. 8 is a structural cross-sectional view of an embodiment of a solenoid assembly in a solenoid valve for a plant protection drone according to the present application;
  • FIG. 9 is a structural cross-sectional view of an embodiment of a housing in a solenoid valve for a plant protection drone according to the present application.
  • FIG. 10 is a structural cross-sectional view of an embodiment of a valve head in a solenoid valve used in a plant protection drone according to the present application;
  • FIG. 11 is a schematic structural diagram of an embodiment of the application for a plant protection drone spraying system
  • FIG. 12 is a schematic structural diagram of another embodiment of the application for a plant protection drone spraying system
  • FIG. 13 is a flowchart of an embodiment of an exhaust method for a plant protection drone spraying system of the present application.
  • the solenoid valve provided by the embodiment of the present application can be applied to the spraying system of the plant protection drone, or other systems sensitive to the power consumption of the solenoid valve.
  • FIG. 1 is a structural cross-sectional view of an embodiment of the solenoid valve provided by the application
  • FIG. 2 is a structural disassembly of an embodiment of the solenoid valve provided by the application. picture.
  • the spraying system of the plant protection drone can usually use a solenoid valve to control the opening and closing of the liquid channel.
  • the solenoid valve is a valve device controlled by the principle of electromagnetic induction.
  • the reciprocating mechanical movement of the electromagnet is controlled by the current on and off of the electromagnetic coil to achieve the purpose of opening or closing the valve.
  • the solenoid valve in the related art when the solenoid valve in the related art is in a working state, the solenoid coil needs to be continuously energized, and the power consumption is relatively large.
  • the power comes from the battery it carries. If the solenoid valve consumes a lot of power, it will reduce the power used by the plant protection drone to fly, shorten the flight time of the drone, and reduce the operation of the plant protection drone. effectiveness.
  • This embodiment provides a solenoid valve for a plant protection drone, including: a valve core assembly 1 , an adjustment assembly 2 and an electromagnetic assembly 3 , and the adjustment assembly 2 is provided on the valve core assembly 1 and the electromagnetic assembly 3 Between; by turning on and off the electromagnetic assembly 3, push the adjustment assembly 2 to move, so as to drive the valve core assembly 1 to move, and realize the opening and closing of the electromagnetic valve.
  • FIG. 3 is a structural cross-sectional view of an embodiment of an adjustment component in a solenoid valve used in a plant protection drone according to the present application.
  • the adjustment assembly 2 includes: a fixed shell 21 , a driving gear 22 , a rotating wheel 23 , a connecting shaft 24 and a first spring 25 ; the driving gear 22 and the rotating wheel 23 are arranged on the fixed Inside the shell 21 , the two ends of the rotating wheel 23 are respectively in contact with the driving gear 22 and the valve core assembly 1 , and the two ends of the driving gear 22 are respectively connected with the rotating wheel 23 and the electromagnetic assembly 3 . Abutting; one end of the connecting shaft 24 is in contact with the rotating wheel 23 , and the other end of the connecting shaft 24 is abutting with the driving gear 22 ; the first spring 25 is sleeved on the driving gear 22 superior.
  • the driving gear 22 is in contact with the rotating wheel 23 and is arranged inside the fixed casing 21 .
  • the fixed casing 21 has the function of fixing and protecting the driving gear 22 and the rotating wheel 23 , so that the driving gear 22 and the rotating wheel 23 can move stably in the fixed casing 21 .
  • the driving gear 22 acts as a driving wheel and has the function of driving the rotating wheel 23 to move.
  • One end of the rotating wheel 23 is in contact with the valve core assembly 1 , and one end of the driving gear 22 is in contact with the electromagnetic assembly 3 .
  • the electromagnetic assembly 3 pushes the drive gear 22 to move through power-on and power-off, and has the function of providing power for the drive gear 22 to move.
  • the valve core assembly 1 moves under the driving of the rotating wheel 23 to control the opening and closing of the solenoid valve.
  • the connecting shaft 24 has the function of making the rotating wheel 23 and the driving gear 22 rotate on the same central axis. At the same time, the smoothness of mutual rotation of the rotating wheel 23 and the driving gear 22 can be improved.
  • the first spring 25 is sleeved on the driving gear 22 .
  • the first spring 25 has the function of restoring the drive gear 22, and can make the drive gear 22 reciprocate.
  • One end of the rotating wheel 23 is provided with an inertial turntable 232, and the inertial turntable 232 can make the rotating wheel 23 rotate more smoothly and smoothly under the action of inertia.
  • Fig. 4 is a schematic structural diagram of an embodiment of a fixed shell in a solenoid valve for plant protection drones of the application
  • Fig. 5 is a solenoid valve for plant protection drones of the application
  • Figure 6 is a schematic structural diagram of an embodiment of a rotating wheel in a solenoid valve used in a plant protection drone according to the present application.
  • the inner wall of the fixed shell 21 is provided with a chute 211
  • the inner wall of the fixed shell 21 is provided with a plurality of guide blocks 212 along the circumferential direction.
  • the drive gear 22 is movably connected in the fixed casing 21 through the chute 211 , and the movement of the drive gear 22 only along the direction of the chute 211 is restricted.
  • the guide block 212 has a guiding function, and can control the rotating wheel 23 to rotate in a designated direction.
  • the outer wall of the driving gear 22 is provided with a sliding block 221 matching the sliding groove 211 along the circumferential direction, and a plurality of driving triangular teeth 222 are provided at the end of the driving gear 22 abutting against the rotating wheel 23 .
  • the sliding block 221 cooperates with the sliding groove 211 so that the driving gear 22 can be movably connected in the fixed shell 21 .
  • the tooth shape of the driving triangular tooth 222 is set to a triangular structure. When the driving gear 22 moves along the chute 211 toward the rotating wheel 23 , the driving triangular tooth 222 can push the rotating wheel 23 to rotate.
  • the outer wall of the rotating wheel 23 is provided with a plurality of driving blocks 231 abutting against the driving triangular teeth 222 , and the driving blocks 231 are located between two adjacent guide blocks 212 .
  • the driving triangular teeth 222 cooperate with the driving block 231 , and the driving triangular teeth 222 act on the driving block 231 with a thrust force, so that the rotating wheel 23 can be rotated under the pushing of the driving gear 22 .
  • the solenoid valve When the solenoid valve is in a closed state, the driving block 231 is located between two adjacent guide blocks 212 .
  • the solenoid valve needs to be opened, under the pushing action of the driving triangular teeth 222 , the driving block 231 slides into the sliding groove 211 along the guiding block 212 . At this time, the solenoid valve is in an open state, and the driving block 231 is located inside the chute 211.
  • two guide blocks 212 are disposed between two adjacent chutes 211 .
  • the drive block 231 located between the two guide blocks 212 Slide into the chute 211 , the rotating wheel 23 rotates again, and the driving block 231 located in the chute 211 slides between the two guide blocks 212 again.
  • the positions of the driving blocks 231 are alternately located between the two guiding blocks 212 and in the chute 211 .
  • the guide block 212 is set as a right-angled trapezoid structure, including an inclined end face and a plane end face, and the plane end faces of the two guide blocks 212 are connected to form a limit step 213 .
  • the limiting step 213 has a limiting function. And the bottom of the chute 211 is closer to the driving triangular tooth 222 than the limiting step 213 , and the distance between the rotating wheel 23 and the driving gear 22 can be controlled by the limiting step 213 .
  • the contact surface between the driving block 231 and the driving triangular tooth 222 is set as an inclined surface matched with the inclined surface of the guide block 212 .
  • the driving block 231 slides along the guide block 212, it can be more smooth and smooth.
  • the electromagnetic assembly 3 is energized again, the electromagnetic assembly 3 pushes the drive gear 22 to move, and the drive triangular tooth 222 pushes the drive block 231 in the chute to move, so that the drive block 231 returns to the limit step 213 again, and simultaneously rotates the position of the wheel 23 Press the valve core assembly 1 again to close the solenoid valve.
  • valve core assembly of the solenoid valve in the foregoing embodiment will be described below with reference to FIG. 7 .
  • FIG. 7 is a structural cross-sectional view of an embodiment of a valve core assembly in a solenoid valve for a plant protection drone according to the present application.
  • the valve core assembly 1 includes: an inner casing 11 , a pressing member 12 , a valve core 13 , a valve joint 14 and a second spring 15 ; wherein the pressing member 12 is clamped on the inner casing 11 and the fixed shell 21; the valve core 13 is arranged inside the inner shell 11; the valve joint 14 is arranged inside the pressing member 12, and one end of the valve joint 14 is connected to the valve core 13, the other end of the valve joint 14 is in contact with the rotating wheel 23; the second spring 15 is sleeved on the valve core 13, and the corrugated gasket 16 is arranged on the inner shell 11 and the pressing member 12 .
  • the inner shell 11 provides an accommodating space for the valve core 13 to be installed.
  • the pressing member 12 provides an accommodating space for the valve joint 14 to be installed, and prevents the valve joint 14 from being damaged.
  • the valve joint 14 has the function of transmitting force, and can transmit the force exerted by the rotating wheel 23 to the valve core 13 to drive the valve core 13 to move.
  • the second spring 15 is sleeved on the valve core 13 and has the function of resetting the valve core 13 , so that the valve core 13 can reciprocate.
  • the valve core assembly 1 further includes a corrugated gasket 16 , and the corrugated gasket 16 is disposed between the inner shell 11 and the pressing member 12 .
  • the corrugated gasket 16 is a rib structure made by a stamping process on the metal gasket. Under the action of the tightening force of the bolt, compression deformation occurs, forming a large contact pressure, so as to achieve sealing, and has good sealing performance. Waterproof. The internal components of the adjustment assembly 2 are protected from being corroded by the liquid, and the service life of the adjustment assembly 2 is improved.
  • FIG. 9 is a structural cross-sectional view of an embodiment of the housing in the solenoid valve for plant protection drones;
  • FIG. 10 is the valve head in the solenoid valve for plant protection drones.
  • the solenoid valve further includes a housing 4, and the housing 4 includes: a valve head 41, a first housing 42 and a second housing 43; wherein , the valve head 41 is set to a T-shaped structure, the valve head 41 includes a liquid inlet 411, a liquid outlet 412 and a connection port 413, and the connection port 413 is perpendicular to the liquid inlet 411 and the liquid outlet
  • the connection line of the port 412; the liquid inlet 411 and the connection port 413 are connected to form an L-shaped liquid inlet channel.
  • the threaded connection can facilitate disassembly, and facilitate the installation and replacement of various components of the solenoid valve.
  • the solenoid valve further includes an elastic pressure regulating pad 5 , and the elastic pressure regulating pad 5 is arranged between the connection port 413 and the inner shell 11 . , the elastic pressure regulating pad 5 is in contact with the valve core 13 .
  • the elastic pressure regulating pad 5 is arranged between the liquid inlet channel of the connection port 413 and the inner shell, and the elastic pressure regulating pad 5 has the function of controlling the on-off of the liquid inlet channel.
  • the elastic pressure regulating pad 5 is made of elastic material. When the solenoid valve is in a closed state, under high pressure conditions, the sealing performance of the liquid inlet channel can be improved and the elastic pressure regulating pad 5 can be prevented from being damaged.
  • the adjustment component 2 when the solenoid valve is in a normally closed state, the adjustment component 2 applies pressure to the valve joint 14, and the valve core 13 is pressed against the elastic pressure regulating pad 5 through the valve joint 14.
  • the water pressure also makes it difficult to push the elastic pressure regulating pad 5 to deform to conduct the liquid inlet channel.
  • the adjustment assembly 2 When the electromagnetic assembly 3 is energized, the adjustment assembly 2 is pushed to move, a gap appears between the adjustment assembly 2 and the valve joint 14, and the valve joint 14 is separated from the pressing action of the adjustment assembly 2. At this time, the elastic pressure regulating pad 5 is in the water pressure. Under the action of deformation, the liquid inlet channel is opened.
  • the fixing shell 21 is embedded inside the second outer shell 43 .
  • the outer wall of the fixing shell 21 is provided with a plurality of card slots 214 .
  • the inner wall of the second housing 43 is provided with a clamping block 431 matching with the clamping slot 214 .
  • the fixed casing 21 can be installed and fixed inside the second housing 43 through the card slot 214 and the matching card block 431 , the stability of the fixed casing 21 can be improved, and the driving gear 22 and the rotating wheel 23 can be prevented from shaking during rotation.
  • FIG. 8 is a structural cross-sectional view of an embodiment of an electromagnetic assembly in a solenoid valve for a plant protection drone of the present application.
  • the electromagnetic assembly 3 is disposed inside the second housing 43 , and the electromagnetic assembly 3 includes: an electromagnet 31 , an electromagnetic coil 32 , a plastic part 33 and a buffer pad 34 ; wherein the electromagnet 31 is disposed Inside the second casing 43 , the electromagnetic coil 32 is embedded in the second casing 43 in the circumferential direction, the plastic part 33 is embedded in one end of the electromagnet 31 , and the driving gear 22 is One end abuts in the plastic part 33 , and the buffer pad 34 is disposed on the inner wall of the second housing 43 near one end of the electromagnet 31 .
  • the plastic part 33 has the effect of reducing the wear and tear of the electromagnet 31 caused by the movement. At the same time, the plastic part 33 has a limiting effect on the adjustment assembly 2 .
  • the buffer pad 34 has the function of buffering the movement and collision of the electromagnet 31 to reduce the wear of the electromagnet 31 .
  • the adjusting assembly 2 can be pushed to move, so as to drive the valve core assembly 1 to move, so that the electromagnetic valve is in an open or closed state.
  • the electromagnetic assembly 3 pushes the driving gear 22 to move, and drives the rotating wheel 23 to rotate in the direction of the valve core assembly 1, and fixes the valve core assembly 1, so that the electromagnetic valve is in a closed state, and the electromagnetic assembly 3 power off.
  • the electromagnetic assembly 3 pushes the driving gear 22 to move, and drives the rotating wheel 23 to rotate away from the valve core assembly 1, and fixes the valve core assembly 1, so that the electromagnetic valve is in an open state.
  • the solenoid valve for plant protection drone provided by this application is in the working state, it is not necessary to continuously energize the electromagnetic component, and it only needs to be energized when the solenoid valve is controlled to be opened or closed. Therefore, the solenoid valve consumes less power, and can be applied to a plant protection drone spraying system to improve spraying efficiency.
  • the present application also provides a plant protection drone spraying system.
  • a plant protection drone spraying system includes: a medicine box 10, a water pump 20, a flow meter 30, a spray head 40, a controller 50 and the above-mentioned solenoid valve;
  • the medicine box 10 is connected with at least one of the water pumps 20, the flow meter 30 is arranged between the medicine box 10 and the water pump 20, and the water pump 20 is connected with a plurality of the spray heads 40, so
  • the solenoid valve is arranged between the spray head 40 and the medicine box 10 , the liquid inlet of the solenoid valve is connected to the liquid inlet of the spray head 40 , and the liquid outlet of the solenoid valve is connected to the medicine box 10 .
  • Connection; the controller 50 is connected with the water pump 20, the flow meter 30 and the solenoid valve. When the solenoid valve is opened, the liquid medicine flowing from the water pump 20 to the spray head 40 can flow back to the medicine tank 10 .
  • FIG. 11 is a schematic structural diagram of an embodiment of the application for a plant protection drone spraying system.
  • the plant protection drone spraying system is provided with a water pump 20 , and the water pump 20 is connected with four spray heads 40 .
  • FIG. 12 is a schematic structural diagram of another embodiment of the application for a plant protection drone spraying system.
  • the plant protection drone spraying system in order to increase the water outlet pressure of the spray heads 40 according to the usage requirements, is provided with two water pumps 20 , and each of the water pumps 20 is connected with two spray heads 40 .
  • the application does not specifically limit the number of the water pump 20 and the spray head 40 .
  • the present application also provides an exhaust method applied to the spraying system.
  • FIG. 13 is a flowchart of an embodiment of an exhaust method for a plant protection drone spraying system of the present application.
  • This embodiment provides an exhaust method for a plant protection drone spraying system, including:
  • the liquid inlet of the solenoid valve is connected to the liquid inlet of the spray head 40 , and the liquid outlet of the solenoid valve is connected to the medicine box 10 .
  • the solenoid valve is turned on, the medicinal liquid originally flowing to the spray head 40 through the water pump 20 is led into the medicine box 10 , and the air in the hose connecting the water pump 20 and the spray head 40 is also discharged into the medicine box 10 with the medicinal liquid.
  • the liquid medicine will not be wasted.
  • the solenoid valve does not need to be energized all the time, saving electricity.
  • the time threshold is set to 3-10s.
  • the time threshold can be set according to actual usage requirements such as the capacity of the medicine box 10, the power of the water pump 20, and the requirement of the spray head 40 to spray the medicine liquid.
  • the liquid inlet of the solenoid valve is connected to the liquid inlet of the nozzle 40 , and the liquid outlet of the solenoid valve is connected to the medicine box 10 .
  • the medicinal liquid will flow back into the medicine box 10 to avoid wasting the medicinal liquid.
  • it can prevent the spray generated by the liquid medicine from being inhaled by the operator, which affects the health of the operator.

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Abstract

A solenoid valve for a plant protection unmanned aerial vehicle, a spraying system and an exhaust method. The solenoid valve comprises: a valve core assembly (1), an adjustment assembly (2) and an electromagnetic assembly (3); the adjustment assembly (2) is arranged between the valve core assembly (1) and the electromagnetic assembly (3), and the adjustment assembly (2) comprises: a fixed housing (21), a driving gear (22), a rotating wheel (23), a connecting shaft (24) and a first spring (25); the driving gear (22) and the rotating wheel (23) are arranged inside the fixed housing (21), two ends of the rotating wheel (23) abut against the driving gear (22) and the valve core assembly (1) respectively, and two ends of the driving gear (22) abut against the rotating wheel (23) and the electromagnetic assembly (3) respectively; one end of the connecting shaft (24) abuts against the rotating wheel (23), and the other end of the connecting shaft (24) abuts against the driving gear (22); and the first spring (25) is sleeved on the driving gear (22). The solenoid valve does not need to be continuously energized, has a low power consumption, and can increase the efficiency of spraying operation when applied to a spraying system of a plant protection unmanned aerial vehicle.

Description

一种用于植保无人机的电磁阀、喷洒***及排气方法Solenoid valve, spraying system and exhaust method for plant protection unmanned aerial vehicle
本申请要求在2020年08月31日提交中国专利局、申请号为202010897296.7、发明名称为“一种用于植保无人机的电磁阀、喷洒***及排气方法”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。This application claims the priority of the Chinese patent application filed on August 31, 2020, with the application number of 202010897296.7 and the invention titled "A Solenoid Valve, Spraying System and Exhaust Method for Plant Protection UAV" , the entire contents of which are incorporated herein by reference.
技术领域technical field
本申请属于无人机技术领域，具体涉及一种用于植保无人机的电磁阀、喷洒***及排气方法。The application belongs to the technical field of unmanned aerial vehicles, and in particular relates to a solenoid valve, a spraying system and an exhaust method for plant protection unmanned aerial vehicles.
背景技术Background technique
植保无人机是一种用于农林植物保护作业的无人驾驶飞机。通过无线电遥控设备或自身程序控制装置操纵植保无人机，可以实现对农林植物的喷洒作业，以此降低人工成本，提高喷洒效率。Plant protection drone is a kind of unmanned aerial vehicle used for agricultural and forestry plant protection operations. The plant protection drone can be operated by radio remote control equipment or its own program control device to realize the spraying of agricultural and forestry plants, thereby reducing labor costs and improving spraying efficiency.
植保无人机的喷洒***通常包括通过软管与药箱连接的水泵、与水泵连接的多个喷头以及设置在软管上的电磁阀来控制药液通道的开启和闭合。电磁阀是一种利用电磁感应原理控制的阀门装置，通过电磁线圈的电流通断来控制电磁铁往复的机械运动，以达到阀门开启或闭合的目的。The spraying system of the plant protection drone usually includes a water pump connected to the medicine tank through a hose, a plurality of spray heads connected to the water pump, and a solenoid valve arranged on the hose to control the opening and closing of the liquid medicine channel. The solenoid valve is a valve device controlled by the principle of electromagnetic induction. The reciprocating mechanical movement of the electromagnet is controlled by the current on and off of the electromagnetic coil to achieve the purpose of opening or closing the valve.
但相关技术中的电磁阀在工作状态时，需要对电磁线圈进行持续通电，耗电量较大。将此电磁阀应用于植保无人机喷洒***中，会增加植保无人机的电量消耗，减少喷洒作业时间，导致喷洒作业效率降低。However, when the solenoid valve in the related art is in a working state, the solenoid coil needs to be continuously energized, and the power consumption is relatively large. Applying this solenoid valve to the plant protection drone spraying system will increase the power consumption of the plant protection drone, reduce the spraying operation time, and reduce the spraying operation efficiency.
发明内容SUMMARY OF THE INVENTION
本申请提供了一种用于植保无人机的电磁阀、喷洒***及排气方法，以解决相关技术中的电磁阀在工作状态时，需要持续通电，耗电量较大的问题。The present application provides a solenoid valve, a spraying system and an exhaust method for plant protection drones, so as to solve the problem that the solenoid valve in the related art needs to be continuously energized and consumes a large amount of electricity when it is in a working state.
第一方面，本申请提供一种用于植保无人机的电磁阀，包括：阀芯组件，调节组件和电磁组件，所述调节组件设置在所述阀芯组件和所述电磁组件之间；In a first aspect, the present application provides a solenoid valve for a plant protection drone, comprising: a valve core assembly, an adjustment assembly and an electromagnetic assembly, wherein the adjustment assembly is disposed between the valve core assembly and the electromagnetic assembly;
其中，所述调节组件包括：固定壳、驱动齿轮、转动轮、连接轴和第一弹簧；Wherein, the adjustment assembly includes: a fixed shell, a driving gear, a rotating wheel, a connecting shaft and a first spring;
所述驱动齿轮与所述转动轮设置在所述固定壳内部，所述转动轮的两端分别与所述驱动齿轮和所述阀芯组件抵接，所述驱动齿轮的两端分别与所述转动轮和所述电磁组件抵接；所述连接轴的一端与所述转动轮抵接，所述连接轴的另一端与所述驱动齿 轮抵接；所述第一弹簧套设在所述驱动齿轮上；所述转动轮的一端设置有惯性转盘。The driving gear and the rotating wheel are arranged inside the fixed casing, the two ends of the rotating wheel are respectively abutted with the driving gear and the valve core assembly, and the two ends of the driving gear are respectively contacted with the The rotating wheel is in contact with the electromagnetic assembly; one end of the connecting shaft is in contact with the rotating wheel, and the other end of the connecting shaft is in contact with the driving gear; the first spring is sleeved on the driving gear On the gear; one end of the rotating wheel is provided with an inertial turntable.
可选的，所述固定壳内壁设置有滑槽，所述固定壳内壁沿周向设置有多个导向块，相邻的两个滑槽之间设置有两个所述导向块；所述驱动齿轮外壁沿周向设置有与所述滑槽相匹配的滑块，所述驱动齿轮与所述转动轮抵接的一端设置有多个驱动三角齿；所述转动轮的外壁设置有多个与所述驱动三角齿抵接的驱动块，所述驱动块位于相邻的两个导向块之间；所述导向块设置为直角梯形体结构，包括斜面端面和平面端面，所述两个导向块的平面端面连接形成限位台阶；所述驱动块与所述驱动三角齿的接触面设置为与所述导向块斜面端面相配合的倾斜面。Optionally, the inner wall of the fixed shell is provided with a chute, the inner wall of the stationary shell is provided with a plurality of guide blocks along the circumferential direction, and two of the guide blocks are provided between two adjacent chute; the drive The outer wall of the gear is provided with a sliding block matched with the chute along the circumferential direction, the end of the driving gear abutting against the rotating wheel is provided with a plurality of driving triangular teeth; the outer wall of the rotating wheel is provided with a plurality of The driving block abutting against the driving triangular teeth, the driving block is located between two adjacent guide blocks; the guide block is set as a right-angled trapezoid structure, including a sloped end face and a flat end face, the two guide blocks The plane end faces of the guide blocks are connected to form a limit step; the contact surfaces of the drive block and the drive triangular teeth are set as inclined surfaces matched with the inclined surfaces of the guide blocks.
可选的，所述阀芯组件包括：内壳、抵压件、阀芯、阀接头和第二弹簧和波纹密封垫；Optionally, the valve core assembly includes: an inner shell, a pressing member, a valve core, a valve joint, a second spring and a corrugated gasket;
其中，所述抵压件卡设在所述内壳和所述固定壳之间；所述阀芯设置在所述内壳内部；所述阀接头设置在所述抵压件内部，所述阀接头的一端与所述阀芯抵接，所述阀接头的另一端与所述转动轮抵接；所述第二弹簧套设在所述阀芯上，所述阀芯组件还包括波纹密封垫，所述波纹密封垫设置在所述内壳与所述抵压件之间。Wherein, the pressing member is clamped between the inner casing and the fixed casing; the valve core is arranged inside the inner casing; the valve joint is arranged inside the pressing member, and the valve One end of the joint is in contact with the valve core, and the other end of the valve joint is in contact with the rotating wheel; the second spring is sleeved on the valve core, and the valve core assembly further includes a corrugated gasket , the corrugated gasket is arranged between the inner shell and the pressing member.
可选的，所述电磁阀还包括壳体，所述壳体包括：阀头，第一外壳和第二外壳；Optionally, the solenoid valve further includes a casing, and the casing includes: a valve head, a first casing and a second casing;
其中，所述阀头设置为T型结构，所述阀头包括进液口、出液口和连接口，所述连接口垂直于所述进液口和所述出液口的连线；所述第一外壳的一端与所述连接口螺纹连接；所述第一外壳的另一端卡设有所述内壳，所述第二外壳与所述内壳螺纹连接。Wherein, the valve head is set to a T-shaped structure, and the valve head includes a liquid inlet, a liquid outlet and a connection port, and the connection port is perpendicular to the connection line between the liquid inlet and the liquid outlet; One end of the first outer shell is screwed with the connection port; the other end of the first outer shell is clamped with the inner shell, and the second outer shell is screwed with the inner shell.
可选的，所述电磁阀还包括弹性调压垫，所述弹性调压垫设置在所述连接口与所述内壳之间，所述弹性调压垫与所述阀芯抵接。Optionally, the solenoid valve further includes an elastic pressure regulating pad, the elastic pressure regulating pad is disposed between the connection port and the inner shell, and the elastic pressure regulating pad is in abutment with the valve core.
可选的，所述固定壳嵌设在所述第二外壳内部，所述固定壳外壁设置有多个卡槽，所述第二外壳内壁设置有与所述卡槽匹配的卡块。Optionally, the fixing shell is embedded inside the second casing, the outer wall of the fixing casing is provided with a plurality of card grooves, and the inner wall of the second casing is provided with a locking block matched with the card grooves.
可选的，所述电磁组件设置在所述第二外壳内部，所述电磁组件包括：电磁铁、电磁线圈、塑料件和缓冲垫；Optionally, the electromagnetic assembly is disposed inside the second housing, and the electromagnetic assembly includes: an electromagnet, an electromagnetic coil, a plastic part and a buffer;
其中，所述电磁铁设置在所述第二外壳内部，所述电磁线圈沿周向嵌设于所述第二外壳内，所述塑料件嵌设于所述电磁铁的一端，所述驱动齿轮的一端抵接在所述塑料件内，所述缓冲垫设置在所述第二外壳内靠近所述电磁铁一端的内壁上。Wherein, the electromagnet is arranged inside the second casing, the electromagnetic coil is embedded in the second casing along the circumferential direction, the plastic part is embedded at one end of the electromagnet, and the driving gear One end of the second shell is abutted in the plastic part, and the buffer pad is arranged on the inner wall of the second shell close to one end of the electromagnet.
第二方面，本申请提供一种植保无人机喷洒***，包括：药箱、水泵、流量计、 喷头、控制器和以上所述的电磁阀；In a second aspect, the present application provides a plant protection drone spraying system, including: a medicine box, a water pump, a flow meter, a spray head, a controller and the above-mentioned solenoid valve;
其中，所述药箱连接有至少一个所述水泵，所述流量计设置在所述药箱和所述水泵之间，所述水泵连接有多个所述喷头，所述电磁阀设置在所述喷头和所述药箱之间，所述电磁阀的进液口与所述喷头进液口连接，所述电磁阀的出液口与所述药箱连接；所述控制器与所述水泵、所述流量计和所述电磁阀连接。Wherein, the medicine box is connected with at least one of the water pumps, the flow meter is arranged between the medicine box and the water pump, the water pump is connected with a plurality of the spray heads, and the solenoid valve is arranged on the Between the spray head and the medicine box, the liquid inlet of the solenoid valve is connected with the liquid inlet of the spray head, and the liquid outlet of the solenoid valve is connected with the medicine box; the controller is connected with the water pump, The flow meter is connected to the solenoid valve.
第三方面，本申请提供一种植保无人机喷洒***的排气方法，包括：In a third aspect, the application provides an exhaust method for a plant protection drone spraying system, including:
控制器启动水泵；The controller starts the water pump;
在所述水泵功率最大时，获取流量计的流量值；When the power of the water pump is maximum, obtain the flow value of the flow meter;
判断在时间阈值内，所述流量值是否小于预设流量阈值；Judging whether the flow value is less than a preset flow threshold within the time threshold;
如果是，对电磁阀通电，所述电磁阀开启后，再对所述电磁阀断电；If yes, energize the solenoid valve, and then de-energize the solenoid valve after the solenoid valve is turned on;
再次获取所述流量计的流量值；Obtain the flow value of the flow meter again;
直至所述流量值大于或者等于所述预设流量阈值，关闭所述水泵，对所述电磁阀通电，所述电磁阀关闭后，再对所述电磁阀断电。Until the flow value is greater than or equal to the preset flow threshold, the water pump is turned off, the solenoid valve is energized, and after the solenoid valve is closed, the solenoid valve is de-energized.
可选的，所述时间阈值设置为3-10s。Optionally, the time threshold is set to 3-10s.
由以上技术方案可知，本申请提供一种用于植保无人机的电磁阀、喷洒***及排气方法，所述电磁阀包括：阀芯组件，调节组件和电磁组件，所述调节组件设置在所述阀芯组件和所述电磁组件之间；其中，所述调节组件包括：固定壳、驱动齿轮、转动轮，连接轴和第一弹簧；所述驱动齿轮与所述转动轮设置在所述固定壳内部，所述转动轮的两端分别与所述驱动齿轮和所述阀芯组件抵接，所述驱动齿轮的两端分别与所述转动轮和所述电磁组件抵接；所述连接轴的一端与所述转动轮抵接，所述连接轴的另一端与所述驱动齿轮抵接；所述第一弹簧套设在所述驱动齿轮上。It can be seen from the above technical solutions that the present application provides a solenoid valve, a spraying system and an exhaust method for a plant protection drone. between the valve core assembly and the electromagnetic assembly; wherein, the adjustment assembly includes: a fixed shell, a driving gear, a rotating wheel, a connecting shaft and a first spring; the driving gear and the rotating wheel are arranged on the Inside the fixed shell, the two ends of the rotating wheel are respectively abutted with the driving gear and the valve core assembly, and the two ends of the driving gear are respectively abutted with the rotating wheel and the electromagnetic assembly; the connection One end of the shaft is in contact with the rotating wheel, and the other end of the connecting shaft is in contact with the driving gear; the first spring is sleeved on the driving gear.
通过本申请提供的用于植保无人机的电磁阀，对电磁组件进行通断电，可以推动调节组件往复运动，以带动阀芯组件运动，使电磁阀处于开启或闭合的状态。具体的，当对电磁组件通电时，电磁组件推动驱动齿轮运动，并带动转动轮向阀芯组件方向转动，固定阀芯组件，使电磁阀处于闭合状态，电磁组件即可断电。当再次对电磁组件通电时，电磁组件推动驱动齿轮运动，并带动转动轮向远离阀芯组件方向转动，固定阀芯组件，使电磁阀处于开启状态。本申请提供的用于植保无人机的电磁阀在工作状 态时，不需要对电磁组件持续通电，只需在控制电磁阀开启或闭合时通电即可。因此，所述电磁阀耗电量小，可以应用于植保无人机喷洒***中，提高喷洒作业效率。Through the solenoid valve for plant protection drones provided by this application, the solenoid assembly can be turned on and off, and the adjustment assembly can be pushed to reciprocate, so as to drive the valve core assembly to move, so that the solenoid valve is in an open or closed state. Specifically, when the electromagnetic assembly is energized, the electromagnetic assembly pushes the driving gear to move, and drives the rotating wheel to rotate in the direction of the valve core assembly, fixing the valve core assembly, so that the electromagnetic valve is in a closed state, and the electromagnetic assembly can be powered off. When the electromagnetic assembly is energized again, the electromagnetic assembly pushes the driving gear to move, and drives the rotating wheel to rotate away from the valve core assembly, fixing the valve core assembly, so that the electromagnetic valve is in an open state. When the solenoid valve for plant protection drone provided by this application is in the working state, it is not necessary to continuously energize the electromagnetic component, and it only needs to be energized when the solenoid valve is controlled to be opened or closed. Therefore, the solenoid valve consumes less power, and can be applied to a plant protection drone spraying system to improve spraying efficiency.
通过本申请提供的用于植保无人机的喷洒***及排气方法，将电磁阀的进液口与喷头进液口连接，电磁阀的出液口与药箱连接。在喷洒***排气的过程中药液会流回药箱内，避免浪费药液。同时，可以防止药液所产生的喷雾***作人员吸入，影响操作人员健康。Through the spraying system and exhaust method for plant protection drones provided in this application, the liquid inlet of the solenoid valve is connected with the liquid inlet of the nozzle, and the liquid outlet of the solenoid valve is connected with the medicine box. During the exhaust process of the spray system, the liquid medicine will flow back into the medicine tank to avoid wasting the liquid medicine. At the same time, it can prevent the spray generated by the liquid medicine from being inhaled by the operator, which affects the health of the operator.
附图说明Description of drawings
为了更清楚地说明本申请的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，对于本领域普通技术人员而言，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to illustrate the technical solutions of the present application more clearly, the accompanying drawings required in the embodiments will be briefly introduced below. Obviously, for those of ordinary skill in the art, without any creative effort, Additional drawings can be obtained from these drawings.
图1为本申请用于植保无人机的电磁阀的一个实施例的结构剖视图；1 is a structural cross-sectional view of an embodiment of a solenoid valve used in a plant protection drone in the present application;
图2为本申请用于植保无人机的电磁阀的一个实施例的结构拆分图；Fig. 2 is a structural disassembly diagram of an embodiment of the solenoid valve used for the plant protection unmanned aerial vehicle in the present application;
图3为本申请用于植保无人机的电磁阀中调节组件的一个实施例的结构剖视图；3 is a structural cross-sectional view of an embodiment of an adjustment assembly in a solenoid valve used in a plant protection drone according to the present application;
图4为本申请用于植保无人机的电磁阀中固定壳的一个实施例的结构示意图；4 is a schematic structural diagram of an embodiment of a fixed shell in a solenoid valve used for plant protection drones according to the present application;
图5为本申请用于植保无人机的电磁阀中驱动齿轮的一个实施例的结构示意图；5 is a schematic structural diagram of an embodiment of a driving gear in a solenoid valve for a plant protection drone according to the present application;
图6为本申请用于植保无人机的电磁阀中转动轮的一个实施例的结构示意图；6 is a schematic structural diagram of an embodiment of a rotating wheel in a solenoid valve used for plant protection drones according to the present application;
图7为本申请用于植保无人机的电磁阀中阀芯组件的一个实施例的结构剖视图；7 is a structural cross-sectional view of an embodiment of a valve core assembly in a solenoid valve for a plant protection drone;
图8为本申请用于植保无人机的电磁阀中电磁组件的一个实施例的结构剖视图；8 is a structural cross-sectional view of an embodiment of a solenoid assembly in a solenoid valve for a plant protection drone according to the present application;
图9为本申请用于植保无人机的电磁阀中壳体的一个实施例的结构剖视图；9 is a structural cross-sectional view of an embodiment of a housing in a solenoid valve for a plant protection drone according to the present application;
图10为本申请用于植保无人机的电磁阀中阀头的一个实施例的结构剖视图；10 is a structural cross-sectional view of an embodiment of a valve head in a solenoid valve used in a plant protection drone according to the present application;
图11为本申请用于植保无人机喷洒***的一个实施例的结构示意图；11 is a schematic structural diagram of an embodiment of the application for a plant protection drone spraying system;
图12为本申请用于植保无人机喷洒***的又一实施例的结构示意图；12 is a schematic structural diagram of another embodiment of the application for a plant protection drone spraying system;
图13为本申请用于植保无人机喷洒***的排气方法的一个实施例的流程图。FIG. 13 is a flowchart of an embodiment of an exhaust method for a plant protection drone spraying system of the present application.
具体实施方式detailed description
下面将详细地对实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下实施例中描述的实施方式并不代表与本申请相一致的所有实施方式。仅是与权利要求书中所详述的、本申请的一些方面相一致的***和方法的示例。Embodiments will be described in detail below, examples of which are illustrated in the accompanying drawings. Where the following description refers to the drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following examples are not intended to represent all implementations consistent with this application. are merely exemplary of systems and methods consistent with some aspects of the present application as recited in the claims.
以下首先对本申请所提供的电磁阀的实施例进行说明，本申请实施例所提供的电磁阀，可以应用于植保无人机的喷洒***，或其他对电磁阀耗电量敏感的***。The following first describes the embodiments of the solenoid valve provided by the present application. The solenoid valve provided by the embodiment of the present application can be applied to the spraying system of the plant protection drone, or other systems sensitive to the power consumption of the solenoid valve.
所述电磁阀的结构请参阅图1和图2，其中，图1为本申请所提供电磁阀的一个实施例的结构剖视图，图2为本申请所提供电磁阀的一个实施例的结构拆分图。Please refer to FIG. 1 and FIG. 2 for the structure of the solenoid valve, wherein, FIG. 1 is a structural cross-sectional view of an embodiment of the solenoid valve provided by the application, and FIG. 2 is a structural disassembly of an embodiment of the solenoid valve provided by the application. picture.
植保无人机的喷洒***通常可以使用电磁阀来控制药液通道的开启和闭合。电磁阀是一种利用电磁感应原理控制的阀门装置，通过电磁线圈的电流通断来控制电磁铁往复的机械运动，以达到阀门开启或闭合的目的。The spraying system of the plant protection drone can usually use a solenoid valve to control the opening and closing of the liquid channel. The solenoid valve is a valve device controlled by the principle of electromagnetic induction. The reciprocating mechanical movement of the electromagnet is controlled by the current on and off of the electromagnetic coil to achieve the purpose of opening or closing the valve.
但相关技术中的电磁阀在工作状态时，需要对电磁线圈进行持续通电，耗电量较大。植保无人机在作业时，电能来源于自身携带的电池，如果电磁阀耗电量较大，将减少植保无人机飞行用的电量，缩短无人机飞行的时间，降低植保无人机作业效率。本实施例提供一种用于植保无人机的电磁阀，包括：阀芯组件1，调节组件2和电磁组件3，所述调节组件2设置在所述阀芯组件1和所述电磁组件3之间；通过对电磁组件3通断电，推动调节组件2运动，以带动阀芯组件1运动，实现电磁阀的开启和闭合。However, when the solenoid valve in the related art is in a working state, the solenoid coil needs to be continuously energized, and the power consumption is relatively large. When the plant protection drone is operating, the power comes from the battery it carries. If the solenoid valve consumes a lot of power, it will reduce the power used by the plant protection drone to fly, shorten the flight time of the drone, and reduce the operation of the plant protection drone. effectiveness. This embodiment provides a solenoid valve for a plant protection drone, including: a valve core assembly 1 , an adjustment assembly 2 and an electromagnetic assembly 3 , and the adjustment assembly 2 is provided on the valve core assembly 1 and the electromagnetic assembly 3 Between; by turning on and off the electromagnetic assembly 3, push the adjustment assembly 2 to move, so as to drive the valve core assembly 1 to move, and realize the opening and closing of the electromagnetic valve.
图3为本申请用于植保无人机的电磁阀中调节组件的一个实施例的结构剖视图。FIG. 3 is a structural cross-sectional view of an embodiment of an adjustment component in a solenoid valve used in a plant protection drone according to the present application.
如图3所示，所述调节组件2包括：固定壳21、驱动齿轮22、转动轮23，连接轴24和第一弹簧25；所述驱动齿轮22与所述转动轮23设置在所述固定壳21内部，所述转动轮23的两端分别与所述驱动齿轮22和所述阀芯组件1抵接，所述驱动齿轮22的两端分别与所述转动轮23和所述电磁组件3抵接；所述连接轴24的一端与所述转动轮23抵接，所述连接轴24的另一端与所述驱动齿轮22抵接；所述第一弹簧25套设在所述驱动齿轮22上。As shown in FIG. 3 , the adjustment assembly 2 includes: a fixed shell 21 , a driving gear 22 , a rotating wheel 23 , a connecting shaft 24 and a first spring 25 ; the driving gear 22 and the rotating wheel 23 are arranged on the fixed Inside the shell 21 , the two ends of the rotating wheel 23 are respectively in contact with the driving gear 22 and the valve core assembly 1 , and the two ends of the driving gear 22 are respectively connected with the rotating wheel 23 and the electromagnetic assembly 3 . Abutting; one end of the connecting shaft 24 is in contact with the rotating wheel 23 , and the other end of the connecting shaft 24 is abutting with the driving gear 22 ; the first spring 25 is sleeved on the driving gear 22 superior.
所述驱动齿轮22与所述转动轮23抵接在一起，并设置在所述固定壳21内部。固定壳21具有固定和保护驱动齿轮22和转动轮23的作用，使驱动齿轮22和转动轮23在固定壳21内可以稳定运动。驱动齿轮22作为主动轮，具有带动转动轮23运动的作用。The driving gear 22 is in contact with the rotating wheel 23 and is arranged inside the fixed casing 21 . The fixed casing 21 has the function of fixing and protecting the driving gear 22 and the rotating wheel 23 , so that the driving gear 22 and the rotating wheel 23 can move stably in the fixed casing 21 . The driving gear 22 acts as a driving wheel and has the function of driving the rotating wheel 23 to move.
转动轮23的一端与阀芯组件1抵接，驱动齿轮22的一端与电磁组件3抵接。所述电磁组件3，通过通断电推动驱动齿轮22运动，具有为驱动齿轮22运动提供动力的作用。阀芯组件1在转动轮23的带动下进行运动，以控制电磁阀的开启和闭合。One end of the rotating wheel 23 is in contact with the valve core assembly 1 , and one end of the driving gear 22 is in contact with the electromagnetic assembly 3 . The electromagnetic assembly 3 pushes the drive gear 22 to move through power-on and power-off, and has the function of providing power for the drive gear 22 to move. The valve core assembly 1 moves under the driving of the rotating wheel 23 to control the opening and closing of the solenoid valve.
连接轴24的一端与所述转动轮23抵接，另一端与所述驱动齿轮22抵接。所述连接轴24具有使转动轮23和驱动齿轮22以同一中心轴转动的作用。同时，可以提高转动轮23和驱动齿轮22相互转动的流畅性。One end of the connecting shaft 24 is in contact with the rotating wheel 23 , and the other end is in contact with the driving gear 22 . The connecting shaft 24 has the function of making the rotating wheel 23 and the driving gear 22 rotate on the same central axis. At the same time, the smoothness of mutual rotation of the rotating wheel 23 and the driving gear 22 can be improved.
所述第一弹簧25套设在所述驱动齿轮22上。第一弹簧25具有使驱动齿轮22复位的作用，可以使驱动齿轮22进行往复运动。所述转动轮23的一端设置有惯性转盘232，惯性转盘232可以使转动轮23在惯性的作用下转动更流畅顺滑。The first spring 25 is sleeved on the driving gear 22 . The first spring 25 has the function of restoring the drive gear 22, and can make the drive gear 22 reciprocate. One end of the rotating wheel 23 is provided with an inertial turntable 232, and the inertial turntable 232 can make the rotating wheel 23 rotate more smoothly and smoothly under the action of inertia.
下面结合附图4-6对前述实施例中电磁阀的固定壳、驱动齿轮和转动轮的结构进行说明。The structures of the fixed casing, the driving gear and the rotating wheel of the solenoid valve in the foregoing embodiments will be described below with reference to FIGS. 4-6 .
请参阅图4、图5和图6，图4为本申请用于植保无人机的电磁阀中固定壳的一个实施例的结构示意图；图5为本申请用于植保无人机的电磁阀中驱动齿轮的一个实施例的结构示意图；图6为本申请用于植保无人机的电磁阀中转动轮的一个实施例的结构示意图。Please refer to Fig. 4, Fig. 5 and Fig. 6, Fig. 4 is a schematic structural diagram of an embodiment of a fixed shell in a solenoid valve for plant protection drones of the application; Fig. 5 is a solenoid valve for plant protection drones of the application Figure 6 is a schematic structural diagram of an embodiment of a rotating wheel in a solenoid valve used in a plant protection drone according to the present application.
在一种实现方式中，所述固定壳21内壁设置有滑槽211，所述固定壳21内壁沿周向设置有多个导向块212。在本实施例中，通过所述滑槽211使驱动齿轮22可活动的连接在固定壳21内，并且限制驱动齿轮22只沿滑槽211方向运动的作用。所述导向块212具有导向的作用，可以控制转动轮23向指定方向转动。In an implementation manner, the inner wall of the fixed shell 21 is provided with a chute 211 , and the inner wall of the fixed shell 21 is provided with a plurality of guide blocks 212 along the circumferential direction. In this embodiment, the drive gear 22 is movably connected in the fixed casing 21 through the chute 211 , and the movement of the drive gear 22 only along the direction of the chute 211 is restricted. The guide block 212 has a guiding function, and can control the rotating wheel 23 to rotate in a designated direction.
所述驱动齿轮22外壁沿周向设置有与所述滑槽211相匹配的滑块221，所述驱动齿轮22与所述转动轮23抵接的一端设置有多个驱动三角齿222。滑块221与滑槽211相配合使驱动齿轮22可以活动连接在固定壳21内。驱动三角齿222的齿形设置为三角形结构，驱动齿轮22沿滑槽211向转动轮23方向运动时，驱动三角齿222可以推动所述转动轮23转动。The outer wall of the driving gear 22 is provided with a sliding block 221 matching the sliding groove 211 along the circumferential direction, and a plurality of driving triangular teeth 222 are provided at the end of the driving gear 22 abutting against the rotating wheel 23 . The sliding block 221 cooperates with the sliding groove 211 so that the driving gear 22 can be movably connected in the fixed shell 21 . The tooth shape of the driving triangular tooth 222 is set to a triangular structure. When the driving gear 22 moves along the chute 211 toward the rotating wheel 23 , the driving triangular tooth 222 can push the rotating wheel 23 to rotate.
所述转动轮23的外壁设置有多个与所述驱动三角齿222抵接的驱动块231，所述驱动块231位于相邻的两个导向块212之间。通过驱动三角齿222和驱动块231相配合，驱动三角齿222将推力作用于驱动块231上，可以使转动轮23在驱动齿轮22的推动下转动。在电磁阀处于闭合状态时，所述驱动块231位于相邻的两个导向块212之间。当电磁阀需要打开时，在驱动三角齿222的推动作用下，驱动块231沿导向块212滑入所述滑槽211内。此时，电磁阀处于打开状态，驱动块231位于滑槽211内 部。The outer wall of the rotating wheel 23 is provided with a plurality of driving blocks 231 abutting against the driving triangular teeth 222 , and the driving blocks 231 are located between two adjacent guide blocks 212 . The driving triangular teeth 222 cooperate with the driving block 231 , and the driving triangular teeth 222 act on the driving block 231 with a thrust force, so that the rotating wheel 23 can be rotated under the pushing of the driving gear 22 . When the solenoid valve is in a closed state, the driving block 231 is located between two adjacent guide blocks 212 . When the solenoid valve needs to be opened, under the pushing action of the driving triangular teeth 222 , the driving block 231 slides into the sliding groove 211 along the guiding block 212 . At this time, the solenoid valve is in an open state, and the driving block 231 is located inside the chute 211.
在本实施例中，相邻的两个滑槽211之间设置有两个所述导向块212，使所述转动轮23转动一次之后，位于两个所述导向块212之间的驱动块231滑入滑槽211中，所述转动轮23再转动一次，位于滑槽211中的驱动块231再次滑入两个所述导向块212之间。所述转动轮23每次转动，所述驱动块231的位置依次交替处于两个所述导向块212之间和所述滑槽211中。In this embodiment, two guide blocks 212 are disposed between two adjacent chutes 211 . After the rotating wheel 23 is rotated once, the drive block 231 located between the two guide blocks 212 Slide into the chute 211 , the rotating wheel 23 rotates again, and the driving block 231 located in the chute 211 slides between the two guide blocks 212 again. Each time the rotating wheel 23 rotates, the positions of the driving blocks 231 are alternately located between the two guiding blocks 212 and in the chute 211 .
所述导向块212设置为直角梯形体结构，包括斜面端面和平面端面，所述两个导向块212的平面端面连接形成限位台阶213。所述限位台阶213，具有限位作用。并且滑槽211底部相对于所述限位台阶213更靠近驱动三角齿222，通过所述限位台阶213可以控制转动轮23和驱动齿轮22之间的距离。The guide block 212 is set as a right-angled trapezoid structure, including an inclined end face and a plane end face, and the plane end faces of the two guide blocks 212 are connected to form a limit step 213 . The limiting step 213 has a limiting function. And the bottom of the chute 211 is closer to the driving triangular tooth 222 than the limiting step 213 , and the distance between the rotating wheel 23 and the driving gear 22 can be controlled by the limiting step 213 .
所述驱动块231与所述驱动三角齿222的接触面设置为与所述导向块212斜面端面相配合的倾斜面。当所述驱动块231沿所述导向块212滑动时，可以更加顺滑流畅。The contact surface between the driving block 231 and the driving triangular tooth 222 is set as an inclined surface matched with the inclined surface of the guide block 212 . When the driving block 231 slides along the guide block 212, it can be more smooth and smooth.
在本实施例中，电磁阀调节组件2的具体工作过程为：In this embodiment, the specific working process of the solenoid valve adjustment assembly 2 is as follows:
电磁阀在常开状态下，驱动块231底部抵在限位台阶213处，驱动三角齿222抵接驱动块231。当电磁组件3通电时，推动驱动齿轮22运动，驱动齿轮22的驱动三角齿222推动驱动块231运动，驱动块231沿着导向块212滑入到滑槽211内，由于滑槽211底部相对限位台阶213来说更靠近驱动三角齿222处。因此，转动后的转动轮23的位置相对靠近驱动齿轮22，原本抵压在阀芯组件1处的转动轮23与阀芯组件1之间存在了间隙，从而打开电磁阀。When the solenoid valve is in a normally open state, the bottom of the driving block 231 abuts against the limiting step 213 , and the driving triangular teeth 222 abuts against the driving block 231 . When the electromagnetic assembly 3 is powered on, the drive gear 22 is pushed to move, the drive triangular teeth 222 of the drive gear 22 push the drive block 231 to move, and the drive block 231 slides into the chute 211 along the guide block 212. The position step 213 is closer to the driving triangular tooth 222 . Therefore, the rotated rotating wheel 23 is relatively close to the driving gear 22, and there is a gap between the rotating wheel 23 originally pressed against the valve core assembly 1 and the valve core assembly 1, thereby opening the solenoid valve.
再次对电磁组件3通电，电磁组件3推动驱动齿轮22运动，驱动三角齿222推动在滑槽内的驱动块231运动，使得驱动块231再次回到限位台阶213处，同时转动轮23的位置再次抵压在阀芯组件1处，从而关闭电磁阀。The electromagnetic assembly 3 is energized again, the electromagnetic assembly 3 pushes the drive gear 22 to move, and the drive triangular tooth 222 pushes the drive block 231 in the chute to move, so that the drive block 231 returns to the limit step 213 again, and simultaneously rotates the position of the wheel 23 Press the valve core assembly 1 again to close the solenoid valve.
下面结合附图7对前述实施例中电磁阀的阀芯组件的结构进行说明。The structure of the valve core assembly of the solenoid valve in the foregoing embodiment will be described below with reference to FIG. 7 .
请参阅图7，图7为本申请用于植保无人机的电磁阀中阀芯组件的一个实施例的结构剖视图。Please refer to FIG. 7 , which is a structural cross-sectional view of an embodiment of a valve core assembly in a solenoid valve for a plant protection drone according to the present application.
可选的，所述阀芯组件1包括：内壳11、抵压件12、阀芯13、阀接头14和第二弹簧15；其中，所述抵压件12卡设在所述内壳11和所述固定壳21之间；所述阀芯13设置在所述内壳11内部；所述阀接头14设置在所述抵压件12内部，所述阀接头 14的一端与所述阀芯13抵接，所述阀接头14的另一端与所述转动轮23抵接；所述第二弹簧15套设在所述阀芯13上，所述波纹密封垫16设置在所述内壳11与所述抵压件12之间。Optionally, the valve core assembly 1 includes: an inner casing 11 , a pressing member 12 , a valve core 13 , a valve joint 14 and a second spring 15 ; wherein the pressing member 12 is clamped on the inner casing 11 and the fixed shell 21; the valve core 13 is arranged inside the inner shell 11; the valve joint 14 is arranged inside the pressing member 12, and one end of the valve joint 14 is connected to the valve core 13, the other end of the valve joint 14 is in contact with the rotating wheel 23; the second spring 15 is sleeved on the valve core 13, and the corrugated gasket 16 is arranged on the inner shell 11 and the pressing member 12 .
内壳11为阀芯13提供安装的容置空间。抵压件12为阀接头14提供安装的容置空间，并且防止阀接头14受到损坏。阀接头14具有传递力的作用，可以将转动轮23施加的力传递至阀芯13上，以带动阀芯13运动。第二弹簧15套设在阀芯13上具有使阀芯13复位的作用，可以使阀芯13进行往复运动。The inner shell 11 provides an accommodating space for the valve core 13 to be installed. The pressing member 12 provides an accommodating space for the valve joint 14 to be installed, and prevents the valve joint 14 from being damaged. The valve joint 14 has the function of transmitting force, and can transmit the force exerted by the rotating wheel 23 to the valve core 13 to drive the valve core 13 to move. The second spring 15 is sleeved on the valve core 13 and has the function of resetting the valve core 13 , so that the valve core 13 can reciprocate.
为提高所述阀芯组件1的防水性，所述阀芯组件1还包括波纹密封垫16，所述波纹密封垫16设置在所述内壳11与所述抵压件12之间。波纹密封垫16是在金属垫片上的通过冲压工艺制作出的凸筋的结构，在螺栓力紧压的作用下发生压缩变形，形成较大的接触压力，以此来实现密封，具有良好的防水作用。保护调节组件2内部部件不会受到液体的侵蚀，提高调节组件2的使用寿命。In order to improve the waterproofness of the valve core assembly 1 , the valve core assembly 1 further includes a corrugated gasket 16 , and the corrugated gasket 16 is disposed between the inner shell 11 and the pressing member 12 . The corrugated gasket 16 is a rib structure made by a stamping process on the metal gasket. Under the action of the tightening force of the bolt, compression deformation occurs, forming a large contact pressure, so as to achieve sealing, and has good sealing performance. Waterproof. The internal components of the adjustment assembly 2 are protected from being corroded by the liquid, and the service life of the adjustment assembly 2 is improved.
下面结合附图9和附图10对前述实施例中电磁阀的壳体和阀头的结构进行说明。The structures of the housing and valve head of the solenoid valve in the foregoing embodiments will be described below with reference to FIG. 9 and FIG. 10 .
请参阅图9和图10，图9为本申请用于植保无人机的电磁阀中壳体的一个实施例的结构剖视图；图10为本申请用于植保无人机的电磁阀中阀头的一个实施例的结构剖视图。Please refer to FIGS. 9 and 10, FIG. 9 is a structural cross-sectional view of an embodiment of the housing in the solenoid valve for plant protection drones; FIG. 10 is the valve head in the solenoid valve for plant protection drones. A cross-sectional view of the structure of an embodiment.
可选的，为电磁阀内部组件提供保护以及安装的容置空间，所述电磁阀还包括壳体4，所述壳体4包括：阀头41、第一外壳42和第二外壳43；其中，所述阀头41设置为T型结构，所述阀头41包括进液口411、出液口412和连接口413，所述连接口413垂直于所述进液口411和所述出液口412的连线；所述进液口411和所述连接口413连通形成L型进液通道。Optionally, to provide a accommodating space for protection and installation of the internal components of the solenoid valve, the solenoid valve further includes a housing 4, and the housing 4 includes: a valve head 41, a first housing 42 and a second housing 43; wherein , the valve head 41 is set to a T-shaped structure, the valve head 41 includes a liquid inlet 411, a liquid outlet 412 and a connection port 413, and the connection port 413 is perpendicular to the liquid inlet 411 and the liquid outlet The connection line of the port 412; the liquid inlet 411 and the connection port 413 are connected to form an L-shaped liquid inlet channel.
所述第一外壳42的一端与所述连接口413螺纹连接；所述第一外壳42的另一端卡设有所述内壳11，所述第二外壳43与所述内壳11螺纹连接。采用螺纹连接的方式可以便于拆卸，便于电磁阀各部件的安装和更换。One end of the first shell 42 is screwed with the connection port 413 ; the other end of the first shell 42 is clamped with the inner shell 11 , and the second shell 43 is screwed with the inner shell 11 . The threaded connection can facilitate disassembly, and facilitate the installation and replacement of various components of the solenoid valve.
可选的，为提高电磁阀进液通道闭合的密封性，所述电磁阀还包括弹性调压垫5，所述弹性调压垫5设置在所述连接口413与所述内壳11之间，所述弹性调压垫5与所述阀芯13抵接。Optionally, in order to improve the tightness of the closed liquid inlet channel of the solenoid valve, the solenoid valve further includes an elastic pressure regulating pad 5 , and the elastic pressure regulating pad 5 is arranged between the connection port 413 and the inner shell 11 . , the elastic pressure regulating pad 5 is in contact with the valve core 13 .
弹性调压垫5设置于连接口413进液通道与内壳之间，弹性调压垫5具有控制进液通道通断的作用。弹性调压垫5由弹性材料制成，电磁阀处于关闭状态时，在高压 情况下，可以提高提高进液通道密封性，并防止弹性调压垫5发生破损。The elastic pressure regulating pad 5 is arranged between the liquid inlet channel of the connection port 413 and the inner shell, and the elastic pressure regulating pad 5 has the function of controlling the on-off of the liquid inlet channel. The elastic pressure regulating pad 5 is made of elastic material. When the solenoid valve is in a closed state, under high pressure conditions, the sealing performance of the liquid inlet channel can be improved and the elastic pressure regulating pad 5 can be prevented from being damaged.
在本实施例中，电磁阀在常闭状态下，调节组件2施加压力于阀接头14，并通过阀接头14将阀芯13抵压弹性调压垫5，此时，即使进液通道内有水压，也难以推动弹性调压垫5发生变形而导通进液通道。In this embodiment, when the solenoid valve is in a normally closed state, the adjustment component 2 applies pressure to the valve joint 14, and the valve core 13 is pressed against the elastic pressure regulating pad 5 through the valve joint 14. The water pressure also makes it difficult to push the elastic pressure regulating pad 5 to deform to conduct the liquid inlet channel.
当电磁组件3通电时，推动调节组件2运动，调节组件2与阀接头14之间出现间隙，阀接头14脱离了调节组件2的抵压作用，此时，弹性调压垫5在水压的作用下变形，进液通道打开。When the electromagnetic assembly 3 is energized, the adjustment assembly 2 is pushed to move, a gap appears between the adjustment assembly 2 and the valve joint 14, and the valve joint 14 is separated from the pressing action of the adjustment assembly 2. At this time, the elastic pressure regulating pad 5 is in the water pressure. Under the action of deformation, the liquid inlet channel is opened.
可选的，所述固定壳21嵌设在所述第二外壳43内部，为提高固定壳21固定在第二外壳43内的稳定性，所述固定壳21外壁设置有多个卡槽214，所述第二外壳43内壁设置有与所述卡槽214匹配的卡块431。Optionally, the fixing shell 21 is embedded inside the second outer shell 43 . In order to improve the stability of the fixing shell 21 being fixed in the second outer shell 43 , the outer wall of the fixing shell 21 is provided with a plurality of card slots 214 . The inner wall of the second housing 43 is provided with a clamping block 431 matching with the clamping slot 214 .
通过卡槽214和匹配的卡块431，可以将固定壳21安装固定在第二外壳43内部，可以提高固定壳21的稳定性，防止驱动齿轮22和转动轮23在转动时发生晃动。The fixed casing 21 can be installed and fixed inside the second housing 43 through the card slot 214 and the matching card block 431 , the stability of the fixed casing 21 can be improved, and the driving gear 22 and the rotating wheel 23 can be prevented from shaking during rotation.
下面结合附图8对前述实施例中电磁阀的电磁组件的结构进行说明。The structure of the solenoid assembly of the solenoid valve in the foregoing embodiment will be described below with reference to FIG. 8 .
请参阅图8，图8为本申请用于植保无人机的电磁阀中电磁组件的一个实施例的结构剖视图。Please refer to FIG. 8 . FIG. 8 is a structural cross-sectional view of an embodiment of an electromagnetic assembly in a solenoid valve for a plant protection drone of the present application.
可选的，所述电磁组件3设置在所述第二外壳43内部，所述电磁组件3包括：电磁铁31、电磁线圈32、塑料件33和缓冲垫34；其中，所述电磁铁31设置在所述第二外壳43内部，所述电磁线圈32沿周向嵌设于所述第二外壳43内，所述塑料件33嵌设于所述电磁铁31的一端，所述驱动齿轮22的一端抵接在所述塑料件33内，所述缓冲垫34设置在所述第二外壳43内靠近所述电磁铁31一端的内壁上。Optionally, the electromagnetic assembly 3 is disposed inside the second housing 43 , and the electromagnetic assembly 3 includes: an electromagnet 31 , an electromagnetic coil 32 , a plastic part 33 and a buffer pad 34 ; wherein the electromagnet 31 is disposed Inside the second casing 43 , the electromagnetic coil 32 is embedded in the second casing 43 in the circumferential direction, the plastic part 33 is embedded in one end of the electromagnet 31 , and the driving gear 22 is One end abuts in the plastic part 33 , and the buffer pad 34 is disposed on the inner wall of the second housing 43 near one end of the electromagnet 31 .
通过对电磁线圈32进行通断电，根据电磁感应原理，电流流经电磁线圈32产生电磁吸力，使电磁铁31在电磁吸力的作用下运动。塑料件33具有减小电磁铁31因运动产生磨损的作用。同时，塑料件33对调节组件2起到限位作用。缓冲垫34具有对电磁铁31运动碰撞进行缓冲的作用，减小电磁铁31的磨损。By turning the electromagnetic coil 32 on and off, according to the principle of electromagnetic induction, current flows through the electromagnetic coil 32 to generate electromagnetic attraction, so that the electromagnet 31 moves under the action of the electromagnetic attraction. The plastic part 33 has the effect of reducing the wear and tear of the electromagnet 31 caused by the movement. At the same time, the plastic part 33 has a limiting effect on the adjustment assembly 2 . The buffer pad 34 has the function of buffering the movement and collision of the electromagnet 31 to reduce the wear of the electromagnet 31 .
通过对电磁组件3进行通断电，可以推动调节组件2运动，以带动阀芯组件1运动，使电磁阀处于开启或闭合的状态。具体的，当对电磁组件3通电时，电磁组件3推动驱动齿轮22运动，并带动转动轮23向阀芯组件1方向转动，并固定阀芯组件1，使电磁阀处于闭合状态，电磁组件3即可断电。当再次对电磁组件3通电时，电磁组 件3推动驱动齿轮22运动，并带动转动轮23向远离阀芯组件1方向转动，并固定阀芯组件1，使电磁阀处于开启状态。本申请提供的用于植保无人机的电磁阀在工作状态时，不需要对电磁组件持续通电，只需在控制电磁阀开启或闭合时通电即可。因此，所述电磁阀耗电量小，可以应用于植保无人机喷洒***中，提高喷洒作业效率。By turning on and off the electromagnetic assembly 3, the adjusting assembly 2 can be pushed to move, so as to drive the valve core assembly 1 to move, so that the electromagnetic valve is in an open or closed state. Specifically, when the electromagnetic assembly 3 is energized, the electromagnetic assembly 3 pushes the driving gear 22 to move, and drives the rotating wheel 23 to rotate in the direction of the valve core assembly 1, and fixes the valve core assembly 1, so that the electromagnetic valve is in a closed state, and the electromagnetic assembly 3 power off. When the electromagnetic assembly 3 is energized again, the electromagnetic assembly 3 pushes the driving gear 22 to move, and drives the rotating wheel 23 to rotate away from the valve core assembly 1, and fixes the valve core assembly 1, so that the electromagnetic valve is in an open state. When the solenoid valve for plant protection drone provided by this application is in the working state, it is not necessary to continuously energize the electromagnetic component, and it only needs to be energized when the solenoid valve is controlled to be opened or closed. Therefore, the solenoid valve consumes less power, and can be applied to a plant protection drone spraying system to improve spraying efficiency.
基于前述实施例中所述的电磁阀，本申请还提供了植保无人机喷洒***。Based on the solenoid valve described in the foregoing embodiments, the present application also provides a plant protection drone spraying system.
本实施例提供的一种植保无人机喷洒***，包括：药箱10、水泵20、流量计30、喷头40、控制器50和以上所述的电磁阀；A plant protection drone spraying system provided in this embodiment includes: a medicine box 10, a water pump 20, a flow meter 30, a spray head 40, a controller 50 and the above-mentioned solenoid valve;
其中，所述药箱10连接有至少一个所述水泵20，所述流量计30设置在所述药箱10和所述水泵20之间，所述水泵20连接有多个所述喷头40，所述电磁阀设置在所述喷头40和所述药箱10之间，所述电磁阀的进液口与所述喷头40进液口连接，所述电磁阀的出液口与所述药箱10连接；所述控制器50与所述水泵20、所述流量计30和所述电磁阀连接。当电磁阀打开时，从水泵20流向喷头40的药液可以流回药箱10。Wherein, the medicine box 10 is connected with at least one of the water pumps 20, the flow meter 30 is arranged between the medicine box 10 and the water pump 20, and the water pump 20 is connected with a plurality of the spray heads 40, so The solenoid valve is arranged between the spray head 40 and the medicine box 10 , the liquid inlet of the solenoid valve is connected to the liquid inlet of the spray head 40 , and the liquid outlet of the solenoid valve is connected to the medicine box 10 . Connection; the controller 50 is connected with the water pump 20, the flow meter 30 and the solenoid valve. When the solenoid valve is opened, the liquid medicine flowing from the water pump 20 to the spray head 40 can flow back to the medicine tank 10 .
图11为本申请用于植保无人机喷洒***的一个实施例的结构示意图。在本实施例中，所述植保无人机喷洒***设置有一个水泵20，所述水泵20连接有四个喷头40。FIG. 11 is a schematic structural diagram of an embodiment of the application for a plant protection drone spraying system. In this embodiment, the plant protection drone spraying system is provided with a water pump 20 , and the water pump 20 is connected with four spray heads 40 .
图12为本申请用于植保无人机喷洒***的又一实施例的结构示意图。在本实施例中，根据使用需求，为增加喷头40出水压力，所述植保无人机喷洒***设置有两个水泵20，每个所述水泵20连接有两个喷头40。本申请对水泵20和喷头40的数量不做具体限定。FIG. 12 is a schematic structural diagram of another embodiment of the application for a plant protection drone spraying system. In this embodiment, in order to increase the water outlet pressure of the spray heads 40 according to the usage requirements, the plant protection drone spraying system is provided with two water pumps 20 , and each of the water pumps 20 is connected with two spray heads 40 . The application does not specifically limit the number of the water pump 20 and the spray head 40 .
基于前述实施例中所述植保无人机的喷洒***，本申请还提供了应用于所述喷洒***的排气方法。Based on the spraying system of the plant protection drone described in the foregoing embodiments, the present application also provides an exhaust method applied to the spraying system.
请参阅图13，图13为本申请用于植保无人机喷洒***的排气方法的一个实施例的流程图。Please refer to FIG. 13. FIG. 13 is a flowchart of an embodiment of an exhaust method for a plant protection drone spraying system of the present application.
本实施例提供一种植保无人机喷洒***的排气方法，包括：This embodiment provides an exhaust method for a plant protection drone spraying system, including:
S1：控制器50启动水泵20；S1: The controller 50 starts the water pump 20;
S2：在所述水泵20功率最大时，获取流量计30的流量值；S2: when the power of the water pump 20 is the maximum, obtain the flow value of the flow meter 30;
S3：判断在时间阈值内，所述流量值是否小于预设流量阈值；S3: judging whether the flow value is less than a preset flow threshold within the time threshold;
S4：如果是，对电磁阀通电，所述电磁阀开启后，再对所述电磁阀断电。S4: If yes, energize the solenoid valve, and then de-energize the solenoid valve after the solenoid valve is turned on.
所述电磁阀的进液口与所述喷头40进液口连接，所述电磁阀的出液口与所述药箱10连接。电磁阀开启后，将原本经水泵20流向喷头40的药液，引到药箱10中，水泵20和喷头40连接软管中的空气也随药液排向药箱10内。达到排气的目的，同时，不会浪费药液。The liquid inlet of the solenoid valve is connected to the liquid inlet of the spray head 40 , and the liquid outlet of the solenoid valve is connected to the medicine box 10 . After the solenoid valve is turned on, the medicinal liquid originally flowing to the spray head 40 through the water pump 20 is led into the medicine box 10 , and the air in the hose connecting the water pump 20 and the spray head 40 is also discharged into the medicine box 10 with the medicinal liquid. To achieve the purpose of exhausting, at the same time, the liquid medicine will not be wasted.
在排气的过程中，电磁阀无需一直处于通电状态，节省用电。During the exhaust process, the solenoid valve does not need to be energized all the time, saving electricity.
S5：再次获取所述流量计30的流量值；直至所述流量值大于或者等于所述预设流量阈值，关闭所述电磁阀和水泵20，对所述电磁阀通电，所述电磁阀关闭后，再对所述电磁阀断电。S5: Acquire the flow value of the flow meter 30 again; until the flow value is greater than or equal to the preset flow threshold, close the solenoid valve and the water pump 20, energize the solenoid valve, and after the solenoid valve is closed , and then de-energize the solenoid valve.
可选的，所述时间阈值设置为3-10s。所述时间阈值可根据药箱10的容量、水泵20的功率、喷头40喷射药液的要求等实际使用需求设定。Optionally, the time threshold is set to 3-10s. The time threshold can be set according to actual usage requirements such as the capacity of the medicine box 10, the power of the water pump 20, and the requirement of the spray head 40 to spray the medicine liquid.
通过本申请提供的用于植保无人机的喷洒***及排气方法，将电磁阀的进液口与喷头40进液口连接，电磁阀的出液口与药箱10连接。在喷洒***排气的过程中药液会流回药箱10内，避免浪费药液。同时，可以防止药液所产生的喷雾***作人员吸入，影响操作人员健康。Through the spray system and exhaust method for plant protection drones provided in the present application, the liquid inlet of the solenoid valve is connected to the liquid inlet of the nozzle 40 , and the liquid outlet of the solenoid valve is connected to the medicine box 10 . During the process of exhausting the spraying system, the medicinal liquid will flow back into the medicine box 10 to avoid wasting the medicinal liquid. At the same time, it can prevent the spray generated by the liquid medicine from being inhaled by the operator, which affects the health of the operator.
本申请提供的实施例之间的相似部分相互参见即可，以上提供的具体实施方式只是本申请总的构思下的几个示例，并不构成本申请保护范围的限定。对于本领域的技术人员而言，在不付出创造性劳动的前提下依据本申请方案所扩展出的任何其他实施方式都属于本申请的保护范围。Similar parts between the embodiments provided in the present application may be referred to each other. The specific embodiments provided above are just a few examples under the general concept of the present application, and do not constitute a limitation on the protection scope of the present application. For those skilled in the art, any other implementations expanded according to the solution of the present application without creative work fall within the protection scope of the present application.

Claims (10)

  1. 一种用于植保无人机的电磁阀，其特征在于，包括：阀芯组件(1)，调节组件(2)和电磁组件(3)，所述调节组件(2)设置在所述阀芯组件(1)和所述电磁组件(3)之间；A solenoid valve for plant protection unmanned aerial vehicle, characterized by comprising: a valve core assembly (1), an adjustment assembly (2) and a solenoid assembly (3), wherein the adjustment assembly (2) is arranged on the valve core between the component (1) and the electromagnetic component (3);
    其中，所述调节组件(2)包括：固定壳(21)、驱动齿轮(22)、转动轮(23)、连接轴(24)和第一弹簧(25)；Wherein, the adjusting assembly (2) comprises: a fixed casing (21), a driving gear (22), a rotating wheel (23), a connecting shaft (24) and a first spring (25);
    所述驱动齿轮(22)与所述转动轮(23)设置在所述固定壳(21)内部，所述转动轮(23)的两端分别与所述驱动齿轮(22)和所述阀芯组件(1)抵接，所述驱动齿轮(22)的两端分别与所述转动轮(23)和所述电磁组件(3)抵接；所述连接轴(24)的一端与所述转动轮(23)抵接，所述连接轴(24)的另一端与所述驱动齿轮(22)抵接；所述第一弹簧(25)套设在所述驱动齿轮(22)上；所述转动轮(23)的一端设置有惯性转盘(232)。The driving gear (22) and the rotating wheel (23) are arranged inside the fixed shell (21), and the two ends of the rotating wheel (23) are respectively connected with the driving gear (22) and the valve core The assembly (1) is in abutment, the two ends of the driving gear (22) are respectively in contact with the rotating wheel (23) and the electromagnetic assembly (3); one end of the connecting shaft (24) is in contact with the rotating wheel (23) The wheel (23) is in contact, and the other end of the connecting shaft (24) is in contact with the driving gear (22); the first spring (25) is sleeved on the driving gear (22); the One end of the rotating wheel (23) is provided with an inertial turntable (232).
  2. 根据权利要求1所述的用于植保无人机的电磁阀，其特征在于，所述固定壳(21)内壁设置有滑槽(211)，所述固定壳(21)内壁沿周向设置有多个导向块(212)，相邻的两个滑槽(211)之间设置有两个所述导向块(212)；所述驱动齿轮(22)外壁沿周向设置有与所述滑槽(211)相匹配的滑块(221)，所述驱动齿轮(22)与所述转动轮(23)抵接的一端设置有多个驱动三角齿(222)；所述转动轮(23)的外壁设置有多个与所述驱动三角齿(222)抵接的驱动块(231)，所述驱动块(231)位于相邻的两个导向块(212)之间；所述导向块(212)设置为直角梯形体结构，包括斜面端面和平面端面，所述两个导向块(212)的平面端面连接形成限位台阶(213)；所述驱动块(231)与所述驱动三角齿(222)的接触面设置为与所述导向块(212)斜面端面相配合的倾斜面。The solenoid valve for plant protection drones according to claim 1, wherein a chute (211) is provided on the inner wall of the fixed shell (21), and the inner wall of the fixed shell (21) is provided with a circumferential direction. A plurality of guide blocks (212), two guide blocks (212) are arranged between two adjacent sliding grooves (211); the outer wall of the driving gear (22) is circumferentially provided with the sliding grooves (211) A matching slider (221), the end of the driving gear (22) in contact with the rotating wheel (23) is provided with a plurality of driving triangular teeth (222); The outer wall is provided with a plurality of driving blocks (231) abutting against the driving triangular teeth (222), and the driving blocks (231) are located between two adjacent guide blocks (212); the guide blocks (212) ) is set as a right-angled trapezoid structure, including inclined plane end faces and plane end faces, the plane end faces of the two guide blocks (212) are connected to form a limit step (213); the drive block (231) and the drive triangular tooth ( The contact surface of 222) is set as an inclined surface matched with the inclined end surface of the guide block (212).
  3. 根据权利要求1所述的用于植保无人机的电磁阀，其特征在于，所述阀芯组件(1)包括：内壳(11)、抵压件(12)、阀芯(13)、阀接头(14)、第二弹簧(15)和波纹密封垫(16)；The solenoid valve for plant protection drones according to claim 1, wherein the valve core assembly (1) comprises: an inner shell (11), a pressing member (12), a valve core (13), valve joint (14), second spring (15) and corrugated gasket (16);
    其中，所述抵压件(12)卡设在所述内壳(11)和所述固定壳(21)之间；所述阀芯(13)设置在所述内壳(11)内部；所述阀接头(14)设置在所述抵压件(12)内部，所述阀接头(14)的一端与所述阀芯(13)抵接，所述阀接头(14)的另一端与所述转动轮(23)抵接；所述第二弹簧(15)套设在所述阀芯(13)上，所述波纹密封垫(16)设置在所述内壳(11)与所述抵压件(12)之间。Wherein, the pressing member (12) is clamped between the inner casing (11) and the fixed casing (21); the valve core (13) is arranged inside the inner casing (11); The valve joint (14) is arranged inside the pressing member (12), one end of the valve joint (14) is in contact with the valve core (13), and the other end of the valve joint (14) is in contact with the valve core (13). The rotating wheel (23) is in contact; the second spring (15) is sleeved on the valve core (13), and the corrugated gasket (16) is provided on the inner shell (11) and the abutment between the pressing pieces (12).
  4. 根据权利要求3所述的用于植保无人机的电磁阀，其特征在于，还包括壳体(4)，所述壳体(4)包括：阀头(41)，第一外壳(42)和第二外壳(43)；The solenoid valve for plant protection drones according to claim 3, further comprising a casing (4), the casing (4) comprising: a valve head (41), a first casing (42) and a second housing (43);
    其中，所述阀头(41)设置为T型结构，所述阀头(41)包括进液口(411)、出液口(412)和连接口(413)，所述连接口(413)垂直于所述进液口(411)和所述出液口(412)的连线；所述第一外壳(42)的一端与所述连接口(413)螺纹连接；所述第一外壳(42)的另一端卡设有所述内壳(11)，所述第二外壳(43)与所述内壳(11)螺纹连接。Wherein, the valve head (41) is set in a T-shaped structure, and the valve head (41) includes a liquid inlet (411), a liquid outlet (412) and a connection port (413), and the connection port (413) perpendicular to the connection line between the liquid inlet (411) and the liquid outlet (412); one end of the first shell (42) is threadedly connected to the connection port (413); the first shell ( The other end of 42) is clamped with the inner shell (11), and the second outer shell (43) is threadedly connected with the inner shell (11).
  5. 根据权利要求4所述的用于植保无人机的电磁阀，其特征在于，还包括弹性调压垫(5)，所述弹性调压垫(5)设置在所述连接口(413)与所述内壳(11)之间，所述弹性调压垫(5)与所述阀芯(13)抵接。The solenoid valve for plant protection drones according to claim 4, further comprising an elastic pressure regulating pad (5), wherein the elastic pressure regulating pad (5) is arranged between the connection port (413) and the Between the inner shells (11), the elastic pressure regulating pad (5) is in contact with the valve core (13).
  6. 根据权利要求4所述的用于植保无人机的电磁阀，其特征在于，所述固定壳(21)嵌设在所述第二外壳(43)内部，所述固定壳(21)外壁设置有多个卡槽(214)，所述第二外壳(43)内壁设置有与所述卡槽(214)匹配的卡块(431)。The solenoid valve for plant protection drones according to claim 4, wherein the fixed shell (21) is embedded in the second shell (43), and the outer wall of the fixed shell (21) is provided with There are a plurality of card slots (214), and the inner wall of the second housing (43) is provided with a card block (431) matching the card slots (214).
  7. 根据权利要求4所述的用于植保无人机的电磁阀，其特征在于，所述电磁组件(3)设置在所述第二外壳(43)内部，所述电磁组件(3)包括：电磁铁(31)、电磁线圈(32)、塑料件(33)和缓冲垫(34)；The solenoid valve for plant protection drones according to claim 4, wherein the solenoid assembly (3) is arranged inside the second housing (43), and the solenoid assembly (3) comprises: Iron (31), electromagnetic coil (32), plastic part (33) and cushion (34);
    其中，所述电磁铁(31)设置在所述第二外壳(43)内部，所述电磁线圈(32)沿周向嵌设于所述第二外壳(43)内，所述塑料件(33)嵌设于所述电磁铁(31)的一端，所述驱动齿轮(22)的一端抵接在所述塑料件(33)内，所述缓冲垫(34)设置在所述第二外壳(43)内靠近所述电磁铁(31)一端的内壁上。Wherein, the electromagnet (31) is arranged inside the second casing (43), the electromagnetic coil (32) is embedded in the second casing (43) in the circumferential direction, and the plastic part (33) ) is embedded in one end of the electromagnet (31), one end of the driving gear (22) abuts in the plastic part (33), and the buffer pad (34) is arranged on the second shell ( 43) on the inner wall near one end of the electromagnet (31).
  8. 一种植保无人机喷洒***，其特征在于，包括：药箱(10)、水泵(20)、流量计(30)、喷头(40)、控制器(50)和上述权利要求1至7任一项所述的电磁阀；A plant protection drone spraying system, characterized in that it comprises: a medicine box (10), a water pump (20), a flow meter (30), a spray head (40), a controller (50) and any of the above claims 1 to 7 a solenoid valve as described;
    其中，所述药箱(10)连接有至少一个所述水泵(20)，所述流量计(30)设置在所述药箱(10)和所述水泵(20)之间，所述水泵(20)连接有多个所述喷头(40)，所述电磁阀设置在所述喷头(40)和所述药箱(10)之间，所述电磁阀的进液口与所述喷头(40)进液口连接，所述电磁阀的出液口与所述药箱(10)连接；所述控制器(50)与所述水泵(20)、所述流量计(30)和所述电磁阀连接。Wherein, the medicine tank (10) is connected with at least one of the water pumps (20), the flow meter (30) is arranged between the medicine tank (10) and the water pump (20), and the water pump ( 20) A plurality of the spray heads (40) are connected, the solenoid valve is arranged between the spray head (40) and the medicine box (10), and the liquid inlet of the solenoid valve is connected to the spray head (40). ) is connected to the liquid inlet, the liquid outlet of the solenoid valve is connected to the medicine box (10); the controller (50) is connected to the water pump (20), the flow meter (30) and the solenoid valve connection.
  9. 一种植保无人机喷洒***的排气方法，其特征在于，包括：An exhaust method for a plant protection drone spraying system, characterized in that it includes:
    控制器(50)启动水泵(20)；The controller (50) starts the water pump (20);
    在所述水泵(20)功率最大时，获取流量计(30)的流量值；When the power of the water pump (20) is maximum, obtain the flow rate value of the flow meter (30);
    判断在时间阈值内，所述流量值是否小于预设流量阈值；Judging whether the flow value is less than a preset flow threshold within the time threshold;
    如果是，对电磁阀通电，所述电磁阀开启后，再对所述电磁阀断电；If yes, energize the solenoid valve, and then de-energize the solenoid valve after the solenoid valve is turned on;
    再次获取所述流量计(30)的流量值；Obtain the flow value of the flow meter (30) again;
    直至所述流量值大于或者等于所述预设流量阈值，关闭所述水泵(20)，对所述电磁阀通电，所述电磁阀关闭后，再对所述电磁阀断电。Until the flow value is greater than or equal to the preset flow threshold, the water pump (20) is turned off, the solenoid valve is energized, and after the solenoid valve is closed, the solenoid valve is de-energized.
  10. 根据权利要求9所述的植保无人机喷洒***的排气方法，其特征在于，所述时间阈值设置为3-10s。The exhaust method for a plant protection drone spraying system according to claim 9, wherein the time threshold is set to 3-10s.
PCT/CN2020/116477 2020-08-31 2020-09-21 Solenoid valve for plant protection unmanned aerial vehicle, spraying system and exhaust method WO2022041357A1 (en)

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