WO2020062290A1 - 农业植保机的隔膜泵及农业植保机 - Google Patents

农业植保机的隔膜泵及农业植保机 Download PDF

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Publication number
WO2020062290A1
WO2020062290A1 PCT/CN2018/109197 CN2018109197W WO2020062290A1 WO 2020062290 A1 WO2020062290 A1 WO 2020062290A1 CN 2018109197 W CN2018109197 W CN 2018109197W WO 2020062290 A1 WO2020062290 A1 WO 2020062290A1
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WO
WIPO (PCT)
Prior art keywords
diaphragm
pump
cavity
plant protection
driving mechanism
Prior art date
Application number
PCT/CN2018/109197
Other languages
English (en)
French (fr)
Inventor
舒展
万道玉
周乐
Original Assignee
深圳市大疆软件科技有限公司
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 深圳市大疆软件科技有限公司 filed Critical 深圳市大疆软件科技有限公司
Priority to CN201880040642.0A priority Critical patent/CN110799752B/zh
Priority to PCT/CN2018/109197 priority patent/WO2020062290A1/zh
Publication of WO2020062290A1 publication Critical patent/WO2020062290A1/zh

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00Machines, pumps, or pumping installations having flexible working members
    • F04B43/02Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F04B43/04Pumps having electric drive
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01MCATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
    • A01M7/00Special adaptations or arrangements of liquid-spraying apparatus for purposes covered by this subclass
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00Machines, pumps, or pumping installations having flexible working members
    • F04B43/0009Special features
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00Machines, pumps, or pumping installations having flexible working members
    • F04B43/0009Special features
    • F04B43/0054Special features particularities of the flexible members
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/22Arrangements for enabling ready assembly or disassembly

Definitions

  • the invention relates to the field of pumps, in particular to a diaphragm pump for an agricultural plant protection machine and an agricultural plant protection machine.
  • Agricultural plant protection machines are used to achieve spraying operations and can spray pesticides.
  • most pumps are used to drive agricultural plant protection machines to achieve spraying operations. Due to the strong corrosiveness of pesticides, the pump needs to have a certain degree of corrosion resistance. Therefore, in agricultural plant protection machines, diaphragm pumps are usually used to pump pesticides to the nozzles. The diaphragm pump realizes the volume change of the diaphragm cavity through the reciprocating movement of the diaphragm, thereby pumping out the pesticide.
  • a crank-slider mechanism is generally used to drive the reciprocating movement of the diaphragm.
  • the crank-slider mechanism is connected to the diaphragm through a hinge.
  • the force state is more complex and the life is shorter.
  • the diaphragm is generally directly connected to the diaphragm support.
  • the invention provides a diaphragm pump for an agricultural plant protection machine and an agricultural plant protection machine.
  • the present invention is implemented by the following technical solutions:
  • a diaphragm pump for an agricultural plant protection machine comprising:
  • a pump cover provided on the pump body
  • a driving mechanism connected to the diaphragm
  • Diaphragm support one end of the diaphragm support abuts the side of the diaphragm sheet away from the pump cover, and the other end is connected to the drive structure, and the contact area of the diaphragm support and the diaphragm sheet side away from the pump cover Greater than a preset area threshold;
  • the driving mechanism drives the diaphragm to reciprocate relative to the pump cover, so that the cavity is reduced or enlarged.
  • an agricultural plant protection machine comprising a frame, a liquid storage tank for storing a medicinal solution, a pipe communicating with the liquid storage tank, and a spraying assembly, and further comprising a connection to the storage through the pipe.
  • a diaphragm pump between a tank and a spray assembly, the diaphragm pump comprising:
  • a pump cover provided on the pump body
  • a driving mechanism connected to the diaphragm
  • Diaphragm support one end of the diaphragm support abuts the side of the diaphragm sheet away from the pump cover, and the other end is connected to the drive structure, and the contact area of the diaphragm support and the diaphragm sheet side away from the pump cover Greater than a preset area threshold;
  • the driving mechanism drives the diaphragm to reciprocate relative to the pump cover, so that the cavity is reduced or enlarged.
  • the present invention designs the area of the contact surface between the diaphragm support and the side of the diaphragm piece away from the cavity by abutting the diaphragm support on the side away from the cavity.
  • FIG. 1 is a structural exploded view of a diaphragm pump in an embodiment of the present invention
  • FIG. 2 is a schematic perspective view of a diaphragm pump according to an embodiment of the present invention.
  • FIG. 3 is a schematic perspective view of a diaphragm pump in another direction according to an embodiment of the present invention.
  • FIG. 4 is a structural exploded view of a diaphragm pump in an embodiment of the present invention.
  • FIG. 5 is a schematic sectional view of a diaphragm pump in an embodiment of the present invention.
  • FIG. 6 is a perspective view of a diaphragm pump in another embodiment of the present invention.
  • FIG. 7 is a schematic structural exploded view of a diaphragm pump in another embodiment of the present invention.
  • FIG. 8 is another schematic structural exploded view of a diaphragm pump in another embodiment of the present invention.
  • FIG. 9 is a schematic sectional view of a diaphragm pump in another embodiment of the present invention.
  • FIG. 10 is a schematic perspective view of a diaphragm pump in still another embodiment of the present invention.
  • FIG. 11 is a schematic partial exploded view of a diaphragm pump in still another embodiment of the present invention.
  • FIG. 12 is a schematic sectional view of a diaphragm pump in still another embodiment of the present invention.
  • FIG. 13 is a perspective view of a motor in an embodiment of the present invention.
  • FIG. 15 is a partially enlarged view of a part of the structure in FIG. 14;
  • 16 is a structural exploded view of a motor in an embodiment of the present invention.
  • FIG. 17 is another structural exploded view of a motor in an embodiment of the present invention.
  • FIG. 18 is a schematic structural diagram of an airborne spraying system in an embodiment of the present invention.
  • 19 is a schematic structural diagram of an opening of an airborne spraying system in an embodiment of the present invention.
  • 20 is a schematic structural diagram of a connector of an airborne spraying system according to an embodiment of the present invention.
  • 21 is a schematic diagram of a specific structure of a connector of an airborne spraying system according to an embodiment of the present invention.
  • 22 is a schematic structural diagram of an airborne spraying system in another direction according to an embodiment of the present invention.
  • FIG. 23 is a perspective view of an agricultural plant protection machine according to an embodiment of the present invention.
  • 100 frame; 110: fuselage; 120: tripod; 130: arm; 200: liquid storage tank; 300: pipeline; 400: sprinkler; 500: airborne spray system;
  • 4 drive mechanism; 41: motor body; 411: motor rotor; 412: motor stator; 413: electrical interface; 414: circuit board; 42: motor base; 421: pump body mounting surface; 422: motor mounting surface; 423: Mounting holes; 43: motor shaft; 44: protective cover; 45: static seal; 46: dynamic seal; 461: first recessed portion; 462: first abutment portion; 463: second abutment portion; 464: Third abutment portion; 465: second recessed portion; 47: first bearing; 48: electric plug; 49: sealing structure; 410: second bearing; 420: third bearing;
  • valve cover 91: first fixed connection member; 92: first protrusion;
  • a first embodiment of the present invention provides a diaphragm pump.
  • the diaphragm pump 520 may include a pump body 1, a pump cover 8, a diaphragm sheet 3, a driving mechanism 4, and a diaphragm support 5.
  • the pump cover 8 is disposed on the pump body 1, and the diaphragm 3 is disposed in the pump body 1.
  • the diaphragm sheet 3 is matched with the pump cover 8.
  • the diaphragm sheet 3 and the pump cover 8 are surrounded to form a cavity.
  • the driving mechanism 4 is connected to the diaphragm 3.
  • the driving mechanism 4 is directly or indirectly connected to the side of the diaphragm 3 away from the cavity.
  • the driving mechanism 4 is used to drive the diaphragm 3 to reciprocate with respect to the pump cover 8 so that the cavity Volume decreases or increases.
  • the driving mechanism 4 drives the diaphragm 3 to move toward the pump cover 8, that is, when the driving mechanism 4 squeezes the diaphragm 3, the volume of the cavity decreases, and the pesticide in the cavity is discharged; when the driving mechanism 4 drives the diaphragm 3 away from the pump cover 8
  • the movement that is, when the driving mechanism 4 stretches the diaphragm 3, the cavity volume increases, and the pesticide is sucked into the cavity from the outside.
  • one end of the diaphragm support 5 is in contact with the side of the diaphragm sheet 3 away from the pump cover 8 and the other end is connected to the driving structure, and the side of the diaphragm support 5 and the diaphragm sheet 3 is far from the pump cover 8
  • the contact area (hereinafter referred to as the contact surface) is larger than a preset area threshold.
  • the area of the contact surface between the diaphragm support 5 and the side of the diaphragm sheet 3 away from the cavity is designed to be sufficiently large by abutting the diaphragm support 5 on the side of the diaphragm sheet 3 away from the cavity, and the diaphragm is driven by the driving mechanism 4
  • the diaphragm support 5 limits the diaphragm 3 by the diaphragm support 5, so that the diaphragm 3 reciprocates in the same direction, and reduces the movement of the diaphragm 3 in other directions, which improves the acceptance of the diaphragm 3
  • the force condition prolongs the service life of the diaphragm 3; when the driving mechanism 4 drives the diaphragm 3 to move toward the pump cover 8, due to the abutment of the diaphragm support 5, the diaphragm 3 can be fully pushed up and have a sufficient amount of deformation. Therefore, the volume of the cavity is changed, and the
  • the diaphragm sheet 3 may include a connecting portion and a supporting portion located on the outer edge of the connecting portion.
  • the connecting portion is driven and moved by the driving mechanism 4, and the supporting portion is assembled on the corresponding pump cover 8.
  • the outer edges of the support portions can be assembled to the pump cover 8 by snap-fitting or other methods, respectively.
  • the thickness of the connecting portion is greater than the thickness of the other parts of the diaphragm sheet 3. Since the connecting portion is driven and moved by the driving mechanism 4, the thickness of the connecting portion is designed to be thick. Even if the connecting portion is abraded, it does not affect the connecting portion.
  • the driving mechanism 4 is driven to move.
  • the thickness refers to the thickness of the diaphragm sheet 3 in its moving direction.
  • the diaphragm sheet 3 is circular. Of course, in other embodiments, the diaphragm sheet 3 may also have other regular or irregular shapes.
  • the preset area threshold may be embodied in the form of a ratio (the ratio of the contact area between the diaphragm support 5 and the abutting surface to the surface area of the abutting surface), or may be expressed in terms of area.
  • the ratio of the contact area between the diaphragm support 5 and the abutting surface to the surface area of the abutting surface is greater than or equal to 80%, such as 85%, 90%, 95%, or 100%.
  • the preset area threshold can be designed according to the displacement demand of the diaphragm pump 520.
  • the contact area between the diaphragm support 5 and the abutting surface and the surface area of the abutting surface are greater than or equal to 100% That is, the diaphragm support 5 covers the abutting surface.
  • the driving mechanism 4 squeezes the diaphragm sheet 3
  • the surface of the diaphragm sheet 3 facing away from the abutting surface can be fitted with the pump cover 8 as much as possible under the squeezing action of the diaphragm support 5, and the volume of the cavity is small enough so as to Drain the pesticide from the cavity.
  • the area of the surface of the diaphragm support 5 facing the diaphragm sheet 3 is equal to the area of the abutting surface, or the area of the surface of the diaphragm support 5 facing the diaphragm sheet 3 is slightly larger than the area of the abutting surface, thereby ensuring that the diaphragm support 5 can
  • the contact surface of the diaphragm sheet 3 is covered.
  • the ratio of the contact area between the diaphragm support 5 and the abutment surface to the surface area of the abutment surface is greater than a preset ratio threshold and less than 100%, and the diaphragm support 5 does not completely cover the abutment surface.
  • the stiffness of the diaphragm support 5 is greater than a preset stiffness threshold.
  • the preset stiffness threshold can be designed according to requirements, such as 10N / m.
  • the diaphragm support 5 is a rigid piece.
  • the side of the diaphragm support 5 and the diaphragm sheet 3 away from the pump cover 8 abut against each other through the arc surface.
  • the diaphragm pump 520 in this embodiment may be a single-diaphragm pump or a double-diaphragm pump.
  • the following embodiments will specifically describe the structures of the single-diaphragm pump and the double-diaphragm pump.
  • the diaphragm pump 520 is applied to a plant protection drone as an example.
  • the plant protection drone includes a pipe 300 and a storage tank for storing pesticides. 200 and nozzle 400.
  • the diaphragm pump 520 is a single diaphragm pump, and the pump cover 8 and the diaphragm sheet 3 each include one.
  • the driving mechanism 4 squeezes the diaphragm sheet 3 and the driving mechanism 4 stretches the diaphragm sheet 3 to form a motion cycle.
  • the single-diaphragm pump further includes a liquid inlet 11 and a liquid outlet 12 which are respectively communicated with the cavity.
  • the liquid inlet 11 can communicate with the storage tank 200 through the pipeline 300
  • the liquid outlet 12 can communicate with the storage tank 200 through the pipeline 300.
  • the shower head 400 is in communication.
  • the single diaphragm pump controls the flow of pesticides.
  • the cavity When the cavity is reduced, the cavity communicates with the pipe 300 through the liquid outlet 12 and the liquid inlet 11 is closed.
  • the pesticide in the cavity (by the cavity in the first half of the current cycle of the current moment)
  • the sucked pesticide) is discharged to the spray head 400 through the liquid outlet 12, and the spray head 400 sprays the pesticide to a designated area (field, forest, etc.).
  • the cavity When the cavity is enlarged, the cavity communicates directly or indirectly with the liquid storage tank 200 through the liquid inlet 11, the liquid outlet 12 is closed, and the pesticide in the liquid storage tank 200 enters the cavity through the liquid inlet 11.
  • liquid inlet 11 and the liquid outlet 12 are provided on the same side of the pump cover 8, which makes the structure of the single diaphragm pump more compact and facilitates the miniaturization design of the single diaphragm pump.
  • the single diaphragm pump has a small size, light weight, The advantage of small power consumption, and will not affect the plant protection drones equipped with it.
  • the diaphragm pump 520 is a double diaphragm pump.
  • the pump cover 8 includes two, and the diaphragm sheet 3 also includes two.
  • the pump cover 8 is correspondingly matched with the two diaphragms 3, the two pump covers 8 are respectively arranged on the two sides of the pump body 1, the two diaphragms 3 are respectively fitted on the corresponding pump covers 8, and the cavity includes two diaphragms 3 A first cavity and a second cavity are formed to surround the corresponding pump cover 8.
  • the driving mechanism 4 drives the two diaphragms 3 to approach or separate from the corresponding pump cover 8 respectively, so that the sizes of the first cavity and the second cavity change in opposite directions.
  • the pump cover 8 includes a first pump cover and a second pump cover
  • the diaphragm 3 includes a first diaphragm and a second diaphragm.
  • the first diaphragm is matched with the first pump cover
  • the second diaphragm is connected with the second pump cover.
  • the first diaphragm sheet and the second diaphragm sheet move in opposite directions.
  • the driving mechanism 4 stretches the first diaphragm and squeezes the second diaphragm, the first diaphragm moves away from the first pump cover, and the second diaphragm moves near the second pump cover, so that the first cavity is enlarged and the first The two cavities shrink.
  • the driving mechanism 4 squeezes the first diaphragm sheet and stretches the second diaphragm sheet, and the driving mechanism 4 stretches the first diaphragm sheet and squeezes the second diaphragm sheet to form a motion cycle.
  • the diaphragm pump 520 further includes a first liquid inlet and a first liquid outlet that communicate with the first cavity, and a second liquid inlet and the second liquid outlet that communicate with the second cavity, respectively.
  • a liquid inlet, a first liquid outlet, a second liquid inlet, and a second liquid outlet can communicate with the pipeline 300, so that the first liquid inlet, the first liquid outlet, and the second liquid inlet can be controlled by And opening and closing of the second liquid outlet to control the liquid flow direction of the pipe 300.
  • the process of controlling the pesticide flow direction by the double diaphragm pump includes: when the first cavity is reduced and the second cavity is enlarged, the first liquid inlet and the second liquid inlet are communicated with the pipeline 300, and the first liquid inlet and the second liquid Mouth closed.
  • the first liquid inlet and the second liquid inlet are opened under the flow of the chemical liquid, and the first liquid inlet and the second liquid outlet are closed under the flow of the chemical liquid.
  • the first cavity discharges the medicinal solution in the first cavity (the medicinal solution sucked by the first cavity in the first half of the current motion cycle) to the shower head 400 through the first liquid outlet and the pipe 300.
  • the spray liquid is sprayed to the designated area (field, forest, etc.) by the spray head 400.
  • the second cavity sucks the medicinal solution from the liquid storage tank 200 through the second liquid inlet and the pipe 300 and is stored in the second cavity. Since the first liquid inlet and the second liquid outlet are closed, the first cavity will not draw the medicinal solution from the storage tank 200 through the first liquid inlet and the pipe 300, and the second cavity will not pass through the second The liquid outlet and the pipe 300 discharge the medical liquid in the second cavity.
  • the first liquid inlet and the second liquid outlet are communicated with the pipeline 300, and the first liquid outlet and the second liquid inlet are closed.
  • the first liquid inlet and the second liquid outlet are opened under the action of the liquid medicine, and the first liquid outlet and the second liquid inlet are closed under the action of the liquid medicine.
  • the second cavity discharges the medicinal solution in the second cavity (the medicinal solution pumped by the second cavity in the first half of the current motion cycle) to the shower head 400 through the second liquid outlet and the pipe 300.
  • the spray liquid is sprayed to the designated area by the spray head 400.
  • the first cavity sucks the medicinal solution from the liquid storage tank 200 through the first liquid inlet and the pipe 300 and is stored in the first cavity. Since the first liquid outlet and the second liquid inlet are closed, the first cavity will not discharge the medicinal liquid in the first cavity through the first liquid outlet and the pipe 300, and the second cavity will not pass through the second The liquid inlet and the pipe 300 suck the chemical liquid from the liquid storage tank 200.
  • two diaphragms 3 are respectively assembled on the corresponding pump cover 8 to form two cavities, which has strong corrosion resistance, and the design of the two cavities can increase the flow rate and pressure of the diaphragm pump 520.
  • the first liquid inlet and the first liquid outlet, and the second liquid inlet and the second liquid outlet are respectively disposed on the same side of the corresponding pump cover 8.
  • the liquid inlet 11 and the liquid outlet 12 are arranged on the same side corresponding to the pump cover 8, the structure of the double diaphragm pump is more compact, which is beneficial to the miniaturization design of the double diaphragm pump.
  • the dual-diaphragm pump of this embodiment has the advantages of small size, light weight, and low power consumption, and does not affect the plant protection drone equipped with it.
  • the driving mechanism 4 can directly drive the diaphragm 3 to reciprocate, and can also indirectly drive the diaphragm 3 to reciprocate.
  • the driving mechanism 4 is directly connected to the side of the diaphragm sheet 3 away from the pump cover 8 by a hinge, and the driving mechanism 4 drives the diaphragm sheet 3 to approach or move away.
  • the diaphragm pump 520 may further include a transmission mechanism 6.
  • the driving mechanism 4 is connected to the diaphragm sheet 3 through the transmission mechanism 6, and the driving mechanism 4 is further connected to the diaphragm support 5 through the transmission mechanism 6.
  • the transmission mechanism 6 is connected to the driving mechanism 4 and the diaphragm support 5, respectively.
  • the driving mechanism 4 rotates to drive the transmission mechanism 6 to push the diaphragm support 5 and the diaphragm sheet 3 to move back and forth relative to the pump cover 8 at the same time to change the size of the cavity.
  • the driving mechanism 4 rotates in the first direction, which drives the transmission mechanism 6 to push the diaphragm support 5 and the diaphragm 3 to be closer to the pump cover 8 at the same time, and the cavity gradually decreases; the driving mechanism 4 rotates in the second direction to drive the transmission mechanism 6
  • the diaphragm support 5 and the diaphragm sheet 3 are pushed away from the pump cover 8 at the same time, and the cavity gradually increases.
  • the transmission mechanism 6 may be an eccentric rotation structure, a gear structure, or a link mechanism.
  • the transmission mechanism 6 may include an eccentric rotating member 61.
  • the driving mechanism 4 of this embodiment is connected to the eccentric rotating member 61, and the driving mechanism 4 rotates to drive the eccentric rotating member 61 to rotate, and the eccentric rotating member 61 pushes against the diaphragm 3 and moves.
  • the eccentric rotating member 61 is further described.
  • the driving mechanism 4 is connected to the eccentric rotating member 61, and the driving mechanism 4 rotates to drive the eccentric rotating member 61 to rotate, and the eccentric rotating member 61 pushes against the two diaphragm pieces 3 to move.
  • the eccentric rotating member 61 is disposed in the pump body 1 and is located between the first diaphragm and the second diaphragm. The two sides of the eccentric rotating member 61 are movable against the first diaphragm and the second diaphragm, respectively.
  • the rotational force of the driving mechanism 4 is converted into a push-pull force by the eccentric rotating member 61.
  • the distance between the eccentric rotating member 61 and the first diaphragm (the eccentricity of the eccentric rotating member 61)
  • the distance from the position to the first diaphragm) and the distance between the eccentric rotor 61 and the second diaphragm (the distance from the eccentric position of the eccentric rotor 61 to the second diaphragm) will change in the opposite direction.
  • the pushing and pulling force of the eccentric rotating member 61 may press the first diaphragm and pull the second diaphragm.
  • the first cavity is reduced and the second cavity is enlarged.
  • the pushing and pulling force of the eccentric rotating member 61 may pull the first diaphragm and squeeze it.
  • the second diaphragm causes the first cavity to expand and the second cavity to shrink.
  • the eccentric rotating member 61 may directly or indirectly abut the first diaphragm sheet and the second diaphragm sheet.
  • the two sides of the eccentric rotating member 61 directly contact the first diaphragm sheet and the second diaphragm sheet, respectively.
  • the eccentric rotating member 61 indirectly abuts the first diaphragm and the second diaphragm.
  • the transmission mechanism 6 may further include a bracket 62 and connecting members 63 provided on both sides of the bracket 62.
  • the eccentric rotating member 61 is inserted into the bracket 62, and two diaphragms 3 are located on both sides of the bracket 62 and are connected to the corresponding side. 63 phases connected.
  • the eccentric rotating member 61 rotates, and drives the bracket 62 and the connecting member 63 to push the diaphragm support 5 and the diaphragm sheet 3 to move.
  • the rotation of the eccentric rotating member 61 is converted into a unidirectional reciprocating movement of the diaphragm support 5 and the diaphragm piece 3 through the cooperation of the bracket 62 and the connecting member 63 to realize the pumping function of the pesticide.
  • the bracket 62 includes a receiving space (not shown), and the eccentric rotating member 61 is received in the receiving space and abuts the bracket 62.
  • the bracket 62 By providing the bracket 62, the abrasion of the first and second diaphragms caused by the eccentric rotating member 61 directly contacting the first and second diaphragms is reduced.
  • a gasket 7 is provided at a connection portion between the eccentric rotating member 61 and the bracket 62 in this embodiment.
  • the material of the gasket 7 is not specifically limited, and a conventional abrasion-resistant material may be selected to make the gasket 7.
  • the circumferential side wall of the eccentric rotating member 61 is in contact with the inner side wall of the bracket 62, and the washer 7 is an anti-wear washer.
  • a part of the eccentric rotating member 61 is in contact with the inner side wall of the bracket 62, and the gasket 7 is a piece of structural member, which reduces the cost and reduces the size requirements of the eccentric rotating member 61 and the bracket 62. .
  • the eccentric rotating member 61 in this embodiment may be an eccentric wheel, an eccentric bearing, or other eccentric rotating structures. Specifically, the type of the eccentric rotating member 61 may be selected according to requirements.
  • the connecting member 63 is integrally formed on the outer sidewall of the bracket 62. In other embodiments, the connecting member 63 and the bracket 62 are separately provided. Optionally, the bracket 62 is provided with a plug-in slot, and the connecting member 63 is plugged in the plug-in slot. In this embodiment, the connecting member 63 may be a screw, or may be another structural member.
  • the fixing method between the diaphragm support 5 and the connection member 63 may be any existing fixing method.
  • the diaphragm support 5 is sleeved and fixed on the connection member 63.
  • the diaphragm support 5 may also be fixed to the connecting member 63 by means of screwing, snapping, or the like.
  • the driving mechanism 4 may include a motor.
  • the main shaft of the motor extends into the pump body 1 and is connected to the transmission mechanism 6, so that the driving force is transmitted from the transmission mechanism 6 to the diaphragm 3 to drive the diaphragm 3. mobile.
  • the cooperation between the motor and the transmission mechanism 6 will be described by taking the eccentric rotating member 61 as an eccentric wheel as an example.
  • the main shaft passes through an eccentric wheel and a bracket 62.
  • the main shaft may be fixed on the bottom of the bracket 62 by a fixing block.
  • the diaphragm pump 520 may further include a protective shell that fixes the motor cover on one side of the pump body 1 to fix the motor and protect the motor.
  • the diaphragm pump 520 may further include a first check valve 10, a second check valve 20, and a valve cover 9.
  • the liquid inlet 11 and the liquid outlet 12 are respectively communicated with the cavity.
  • the first check valve 10 is used to control the opening and closing of the liquid inlet 11 and the second check valve 20 is used to control the liquid outlet 12 Opening and closing.
  • the valve cover 9 of this embodiment is used to fix the first check valve 10 and the second check valve 20, so that the first check valve 10 and the second check valve 20 are integrated through the valve cover 9.
  • the valve cover 9 is detachably connected to the pump body 1 to fix the first check valve 10 and the second check valve 20 to the pump body 1 so as to fix the first check valve 10 and the first
  • the two check valves 20 are integrated into the pump body 1.
  • the first check valve 10 and the second check valve of this embodiment Since the valve 20 is integrated into the pump body 1 through the valve cover 9, the first check valve 10 and the second check valve 20 are still integrated into the pump body 1 through the valve cover 9 after the diaphragm 3 is removed. It will be affected by the removal of the diaphragm 3.
  • the valve cover 9 and the pump cover 8 are separately provided. After the pump cover 8 is removed, the first check valve 10 and the second check valve 20 are still fixed on the valve cover 9 and will not be removed by the pump cover 8. influences.
  • the diaphragm pump 520 adds a valve cover 9 provided separately from the pump cover 8 and integrates two check valves (the first check valve 10 and the second check valve 20) on the valve cover 9, Through the detachable connection between the valve cover 9 and the pump body 1, two check valves are integrated into the pump body 1, and the two check valves are not affected by the removal of the pump cover 8 and the diaphragm 3, which avoids Risk of loss of one-way valve; In addition, two two-way valves are fixed by bonnet 9, eliminating the need to design valve seats for each one-way valve individually, reducing the number of parts and saving manufacturing and installation costs.
  • the first check valve 10 of this embodiment includes a first valve core 101 and a first elastic member 102.
  • the first valve core 101 and the first elastic member 102 cooperate.
  • the first valve core 101 is fixed on the pump body 1.
  • An elastic member 102 is fixed on the valve cover 9. Specifically, one end of the first valve core 101 is fixedly connected to the first elastic member 102 and the other end is fixedly connected to the pump body 1.
  • One end of the first elastic member 102 remote from the first valve core 101 is fixedly connected to the valve cover 9.
  • the fixing manner of the first valve core 101 and the pump body 1 can be set as required.
  • the first valve core 101 can be directly fixed on the pump body 1 or indirectly fixed on the pump body 1.
  • the first valve element 101 may be indirectly fixed to the pump body 1 through a valve seat.
  • the pump body 1 is provided with a first groove (not shown), and the first valve core 101 is inserted in the first groove.
  • the fixing manner of the first elastic member 102 and the valve cover 9 can also be set as required.
  • the valve cover 9 is provided with a first protrusion 92, and the first elastic member 102 is sleeved and fixed on the first protrusion 92.
  • the first groove and the first protrusion 92 are opposite to each other, which makes the structure more compact.
  • the first elastic member 102 is a spring, one end of which is sleeved and fixed on the first protrusion 92, and the other end of which is sleeved and fixed on the first valve core 101. It can be understood that the first elastic member 102 can also be other elastic structures, and the fixing manner between the first elastic member 102 and the valve cover 9 is not limited to the above implementation.
  • the second check valve 20 of this embodiment includes a second valve core 201 and a second elastic member 202.
  • the second valve core 201 is matched with the second elastic member 202, and the second valve core 201 is fixed on the valve cover 9.
  • the two elastic members 202 are fixed on the pump body 1. Specifically, one end of the second valve element 201 is fixedly connected to the second elastic member 202, and the other end thereof is fixedly connected to the valve cover 9. One end of the second elastic member 202 remote from the second valve core 201 is fixedly connected to the pump body 1.
  • the fixing manner of the second valve core 201 and the valve cover 9 can be set as required.
  • the second valve core 201 can be directly fixed on the valve cover 9 or indirectly fixed on the valve cover 9.
  • the second valve core 201 can be indirectly fixed on the valve cover 9 through a valve seat.
  • the valve cover 9 is provided with a second groove (not shown). The second valve core 201 is inserted in the second groove.
  • the fixing manner of the second elastic member 202 and the pump body 1 can also be set according to the setting.
  • the pump body 1 is provided with a second protrusion 15, and the second elastic member 202 is sleeved and fixed in the second protrusion 15.
  • the second groove and the second protrusion 15 are opposite to each other, making the structure more compact.
  • the second elastic member 202 is a spring, one end of which is sleeved and fixed on the second protrusion 15, and the other end of which is sleeved and fixed on the second valve core 201.
  • the first elastic member 102 can also be other elastic structures, and the fixing manner between the second elastic member 202 and the pump body 1 is not limited to the above implementation.
  • the first protrusion 92 and the second groove are spaced apart from each other on the valve cover 9.
  • the valve cover 9 has a receiving groove, and the first protrusion 92 and the second groove are both received in the valve cover 9. In the storage groove, the design of the valve cover 9 is more reasonable and compact.
  • the valve cover 9 and the pump body 1 can be fixedly connected by any existing detachable connection method.
  • the valve cover 9 is provided with a first fixed connection member 91, and the pump body 1 corresponds to the first fixed connection.
  • the component 91 is provided with a second fixed connection component 16.
  • the first fixed connection member 91 cooperates with the second fixed connection member 16 so that the valve cover 9 is detachably connected to the pump body 1.
  • the first fixed connection member 91 is a plug projection
  • the second fixed connection member 16 is a plug hole
  • the plug projection is plugged into the plug hole
  • the valve cover 9 is detachably connected to the pump body 1 on.
  • the first fixed connection member 91 and the second fixed connection member 16 are snap-fitted.
  • the valve cover 9 of this embodiment is provided between the pump body 1 and the pump cover 8.
  • the pump cover 8 is detachably connected to the pump body 1, but is separated from the valve cover 9 or is in contact with the valve cover 9 but is not connected. After the diaphragm 3 is damaged, the pump cover 8 can be removed from the pump body 1.
  • the upper and lower parts are convenient for maintenance and replacement of the diaphragm 3, and after the pump cover 8 is removed, the first check valve 10 and the second check valve 20 are still fixed to the pump body 1 through the valve cover 9, and the removal of the pump cover 8 can be seen. Whether or not the first check valve 10 and the second check valve 20 are not affected.
  • the connection method between the pump cover 8 and the pump body 1 can be selected from any existing detachable connection methods, such as screw connection, snap connection and the like.
  • the pump cover 8 is detachably connected to the pump body 1 and the valve cover 9 respectively. After the diaphragm 3 is damaged, the pump cover 8 can be removed from the pump body 1 and the valve cover 9 to facilitate the maintenance and replacement of the diaphragm 3, and after the pump cover 8 is removed, the first check valve 10 and the second one-way valve The valve 20 is still fixed to the pump body 1 through the valve cover 9. It can be seen that the removal of the pump cover 8 does not affect the first check valve 10 and the second check valve 20.
  • the connection between the pump cover 8 and the pump body 1 and the valve cover 9 can be selected from any existing detachable connection methods, such as screw connection and snap connection.
  • the first check valve 10 includes a first check valve for controlling the opening and closing of the first inlet and a second check valve for controlling the opening and closing of the second inlet
  • the second check valve 20 includes a first liquid check valve for controlling the opening and closing of the first liquid outlet and a second liquid check valve for controlling the opening and closing of the second liquid outlet.
  • the valve cover 9 includes a first valve cover 9 and a second valve cover 9. The first liquid inlet check valve and the first liquid outlet check valve are fixed on the first valve cover 9, and the first liquid inlet check valve and the first A liquid discharge check valve is detachably fixed to the pump body 1 through a first valve cover 9.
  • the second liquid inlet check valve and the second liquid outlet check valve are fixed on the second valve cover 9, and the second liquid inlet check valve and the second liquid outlet check valve are detachably fixed on the second valve cover 9.
  • the first valve cover 9 is detachably connected to a side of the pump body 1 facing the first pump cover, so as to fix the first liquid check valve and the first liquid check valve on the pump body 1.
  • the second valve cover 9 is detachably connected to a side of the pump body 1 facing the second pump cover to fix the second liquid check valve and the second liquid check valve on the pump body 1.
  • the first liquid check valve is provided opposite the second liquid check valve, and the first liquid check valve is provided opposite the second liquid check valve, which makes the structure of the double diaphragm pump more Compact design for miniaturization of dual diaphragm pumps.
  • the diaphragm pump 520 may further include a pressure relief device 2.
  • the pump body 1 is provided with a pressure relief port 13, and the liquid inlet 11 communicates with the liquid outlet 12 through a flow channel, and the pressure relief port 13 Connected with the runner.
  • the pressure relief device 2 is disposed at the pressure relief port 13.
  • the pressure relief device 2 includes a valve 21 and an elastic reset member 22.
  • the valve 21 is provided corresponding to the pressure relief port 13, and the valve 21 is used to seal the pressure relief port 13.
  • the elastic resetting member 22 is connected to the valve 21.
  • the elastic resetting member 22 of this embodiment is used to provide an elastic restoring force to the valve 21.
  • the valve 21 Under the action of the elastic restoring force of the elastic resetting member 22, the valve 21 can be urged to seal the pressure relief port 13.
  • the valve 21 When the hydraulic pressure in the pump body 1 exceeds a preset pressure threshold, the valve 21 is separated from the pressure relief port 13 under the abutment force of the pesticide, and the pesticide flows out from the pressure relief port 13, reducing the hydraulic pressure in the pump body 1.
  • the pesticide enters the flow channel in the pump body 1 through the liquid inlet 11 and is pumped to the nozzle 400 through the liquid outlet 12, and the pesticide is sprayed out by the nozzle 400.
  • the nozzle 400 is blocked, the path between the liquid outlet 12 and the nozzle 400 is cut off, and the pesticide cannot flow from the liquid outlet 12 to the nozzle 400, and the pesticide still enters the flow channel in the pump body 1 from the liquid inlet 11 , Which causes the hydraulic pressure in the pump body 1 to increase.
  • the pesticide When the hydraulic pressure in the pump body 1 exceeds a preset pressure threshold, the pesticide supports the valve 21, and when the pesticide holding force is greater than the elastic restoring force of the elastic reset member 22 on the valve 21, the valve 21 and the pressure relief port 13 Phase separation, the pesticide enters the flow channel in the pump body 1 through the liquid inlet 11 and then flows out through the pressure relief port 13 to achieve overpressure protection of the diaphragm pump 520.
  • both the preset pressure threshold and the holding force are positively related to the elastic restoring force, that is, the larger the elastic restoring force, the larger the preset pressure threshold and the holding force.
  • the pressure relief port 13 on the pump body 1 and adding a pressure relief device 2 to cooperate with the pressure relief port 13, when the hydraulic pressure in the pump body 1 is too high, the pressure relief device 2 and the pressure relief port The 13 phases are separated, and the liquid in the pump body 1 flows out through the pressure relief port 13 to realize the overpressure protection of the diaphragm pump 520.
  • the way in which the pressure relief device 2 cooperates with the pressure relief port 13 has The cost is low, the response is more timely, and the stability is higher.
  • the liquid discharged from the pressure relief port 13 enters the pump body 1 again through the liquid intake port 11 to avoid problems such as waste of resources and environmental pollution caused by liquid leakage.
  • the pump body 1 of this embodiment may further include a liquid return port 14, the liquid return port 14 is in communication with the flow channel, and the pressure relief port 13 is communicated with the liquid return port 14 through a return channel.
  • the pesticide flowing out of the pressure relief port 13 can be re-entered into the flow path in the pump body 1 through the liquid return port 14, thereby avoiding problems such as resource waste and environmental pollution caused by liquid leakage.
  • a cone valve is provided on a side of the valve 21 facing the pressure relief port 13, and the cone valve is inserted into the pressure relief port 13.
  • the valve 21 is fixed in the pressure relief port 13 through the cooperation of the poppet valve and the pressure relief port 13.
  • the nozzle head 400 is blocked and the hydraulic pressure in the pump body 1 exceeds a preset pressure threshold, the pesticide holding cone valve in the pump body 1 is opened.
  • the valve 21 is opened and leaks.
  • the pressure port 13 is separated from the phase.
  • the valve 21 in this embodiment is made of a flexible material, such as rubber, plastic, and the like.
  • a flexible valve 21 when the hydraulic pressure in the pump body 1 exceeds a preset pressure threshold, the pesticide in the pump body 1 can easily open the valve 21 to achieve a pressure relief protection function.
  • the elastic reset member 22 is connected to the surface of the valve 21 facing away from the pressure relief port 13.
  • the elastic reset member 22 is integrally formed on the valve 21.
  • the surface of the valve 21 facing away from the pressure relief port 13 is provided with a fixed end, and the elastic reset member 22 is fixedly connected to the fixed end.
  • the connection manner of the elastic reset member 22 and the fixed end can be selected from any existing connection methods.
  • the elastic reset member 22 can be sleeved with the fixed end.
  • the elastic reset member 22 is movably connected to the cover 23.
  • the elastic restoring member 22 can apply different amounts of elastic restoring force to the valve 21, and the valve 21 can be released under the effect of the elastic restoring force applied by the elastic restoring member 22.
  • the pressure port 13 is sealed.
  • the cover 23 of this embodiment is covered at the pressure relief port 13, the cover 23 and the pump body 1 surround to form a receiving space, the valve 21 is received in the receiving space, and the valve 21 is fixedly connected to the inner wall of the cover 23.
  • the accommodating space accommodates the valve 21 to prevent the valve 21 from being separated from the pressure relief port 13 and lost when the pressure is released.
  • the fixed connection manner between the cover body 23 and the pump body 1 may adopt any existing fixed connection manner.
  • the cover body 23 and the pump body 1 are fixedly connected by a fixing member 27 (such as a bolt).
  • the cover body 23 has a first opening portion, and the elastic resetting member 22 can directly or indirectly cooperate with the first opening portion to apply different magnitudes of elastic restoring force to the valve 21.
  • the elastic reset member 22 of this embodiment is connected to the side of the valve 21 facing away from the pressure relief port 13, and the first opening portion is located at a preset distance from the side of the valve 21 facing away from the pressure relief port 13.
  • the first opening portion may be a circular hole or a hole of another shape. In this embodiment, the first opening portion is a circular hole.
  • the elastic resetting member 22 applies different magnitudes of elastic restoring force to the valve 21 based on different structures.
  • the elastic resetting member 22 is movably inserted in the first opening portion.
  • the elastic restoring member 22 can apply different amounts of elastic restoring force to the valve 21.
  • the elastic resetting member 22 is pressed in the first opening portion. By pressing the end of the elastic resetting member 22 away from the valve 21, the elastic resetting member 22 is gradually compressed, and the elastic restoring force applied by the elastic resetting member 22 to the valve 21 will become larger and larger.
  • the holding force required for the pesticide to open the valve 21 The size is also getting bigger.
  • the elastic reset member 22 By pulling the end of the elastic reset member 22 away from the valve 21, the elastic reset member 22 is gradually stretched, but the valve 21 is not separated from the pressure relief port 13, and the holding force required by the pesticide to open the valve 21 is also increasing. small.
  • the position of the elastic reset member 22 in the first opening portion can be moved as required.
  • the elastic reset member 22 is made of a flexible material, such as a flexible material such as rubber or plastic.
  • the pressure relief device 2 further includes an adjusting member 24.
  • the adjusting member 24 cooperates with the elastic resetting member 22 to adjust the elastic restoring force so that the elastic resetting member 22 can apply.
  • Different sizes of elastic restoring force give the valve 21.
  • one end of the elastic reset member 22 is connected to the valve 21 and the other end is connected to the adjusting member 24, and the adjusting member 24 is rotatably inserted in the first opening portion. When the adjusting member 24 rotates relative to the first opening in the first opening portion, the adjusting member 24 can drive the expansion and contraction of the elastic resetting member 22 to adjust the elastic restoring force.
  • the adjusting member 24 rotates in the first direction in the first opening portion, the adjusting member 24 moves toward the valve 21, so that the elastic restoring member 22 is gradually compressed, and the elastic restoring force applied by the elastic restoring member 22 to the valve 21 will be As it gets larger, the holding force required for the pesticide to open the valve 21 is also getting larger.
  • the adjusting member 24 rotates in the second direction in the first opening 5111, the adjusting member 24 moves away from the valve 21, so that the elastic resetting member 22 is gradually stretched but the valve 21 is not separated from the pressure relief port 13, and the elastic resetting member 22
  • the elastic restoring force applied to the valve 21 will become smaller and smaller, and the holding force required by the pesticide to open the valve 21 will also become smaller and smaller.
  • the first direction is different from the second direction.
  • the first direction is a clockwise direction
  • the second direction is a counterclockwise direction.
  • the adjusting member 24 can be rotated as required.
  • the type of the elastic restoring member 22 may be selected according to requirements.
  • the elastic restoring member 22 may be made of a flexible material, such as a flexible material such as rubber or plastic; optionally, the elastic restoring member 22 is a spring.
  • the type of the adjusting member 24 may also be selected according to requirements.
  • the adjusting member 24 is a threaded member, such as a screw, and the threaded member is rotationally connected to the first opening.
  • the elastic resetting member 22 is a spring, and the adjusting member 24 is a screw. One end of the spring is sleeved on the fixed end, and the other end is sleeved on the screw.
  • a part of the adjusting member 24 is provided with a first opening portion and is exposed outside the first opening portion for the user to adjust.
  • the pressure relief device 2 of this embodiment may further include a travel switch 25, the elastic reset member 22 is in contact with one end of the valve 21, and the travel switch 25 is in contact with the other end of the valve 21, so that the pressure relief The structural distribution of the pressing device 2 is more reasonable and compact.
  • the elastic reset member 22 and the travel switch 25 are in contact with the surface of the valve 21 facing away from the pressure relief port 13.
  • the pesticide in the pump body 1 opens the valve 21, so that the valve 21 is separated from the pressure relief port 13, and the valve 21 pushes the travel switch 25 to move.
  • the switch 25 can detect the amount of movement of the valve 21 in time, thereby transmitting an overpressure signal to the back end (control center).
  • the cover 23 of this embodiment has a second opening portion, and the limit switch 25 is inserted into the second opening portion.
  • the limit switch 25 is fixed through the second opening portion to prevent the limit switch 25 from being lost.
  • the travel switch 25 is movably inserted in the second opening portion.
  • the pressure relief device 2 of this embodiment may further include an auxiliary member 26, which is provided on a surface of the valve 21 facing away from the pressure relief port 13, a stroke switch 25 and an elastic reset member 22 is in contact with the valve 21 through an auxiliary member 26.
  • an auxiliary member 26 By providing the auxiliary member 26, the flexible valve 21 can better seal the pressure relief port 13, and when the valve 21 is separated from the pressure relief port 13, the movement of the valve 21 is transmitted to the travel switch 25 in time.
  • the auxiliary member 26 of this embodiment is provided with a third opening portion.
  • the elastic resetting member 22 can abut the valve 21 through the auxiliary member 26 in different ways.
  • the elastic resetting member 22 can pass through a third opening to connect with the valve 21.
  • a portion (fixed end) of the valve 21 passes through the third opening portion and is connected to the elastic reset member 22.
  • the position switch 25 can also contact the valve 21 through the auxiliary member 26 in different ways.
  • the surface of the auxiliary member 26 and the valve 21 facing away from the pressure relief port 13 is fixedly connected.
  • the auxiliary member 26 faces the valve 21 facing away.
  • the surface of the pressure relief port 13 is fixedly connected by bonding, snapping or other methods.
  • the auxiliary member 26 is accommodated in a receiving space formed by the cover 23 and the pump body 1, and the auxiliary member 26 is movably connected to the inner side wall of the cover 23.
  • the auxiliary component 26 in this embodiment is a rigid component, such as a stainless steel component.
  • the auxiliary piece 26 is a rigid sheet-like structure.
  • the auxiliary piece 26 of the rigid sheet-like structure can not only make the flexible valve 21 better seal and release pressure without adding too much weight to the pressure relief device 2
  • the port 13 can also transmit the movement of the valve 21 to the stroke switch 25 in time when the valve 21 is separated from the pressure relief port 13.
  • the driving mechanism 4 of this embodiment includes a motor. Further, in conjunction with FIGS. 13 to 17, the motor may include a motor main body 41, a motor base 42, a motor shaft 43 (ie, a main shaft), a protective cover 44, a static seal 45 and Moving seal 46.
  • the motor body 41 includes a motor rotor 411 and a motor stator 412.
  • the motor base 42 is provided with a pump body mounting surface 421, a motor mounting surface 422, and a mounting hole 423.
  • the pump body mounting surface 421 is used to mount the pump body 1 of the diaphragm pump 520, and the motor mounting surface 422 is used to mount the motor body 41.
  • the pump body mounting surface 421 and the motor mounting surface 422 of this embodiment are located on opposite sides of the motor base 42, respectively, that is, the pump body mounting surface 421 and the motor mounting surface 422 are opposite to each other. Further, the mounting hole 423 penetrates the motor mounting surface 422 and the pump body mounting surface 421.
  • the motor shaft 43 of this embodiment is installed in the mounting hole 423.
  • the motor shaft 43 includes a connection end and a power output end.
  • the connection end protrudes from one end of the mounting hole 423, and the power output end protrudes from the other end of the mounting hole 423.
  • the connection end is used for fixed connection with the motor body 41, and the power output end is used for outputting power to drive the diaphragm 3 of the diaphragm pump 520 to reciprocate.
  • the motor rotor 411 is fixedly connected to the motor shaft 43, and the motor rotor 411 is used to drive the motor shaft 43 to rotate.
  • the motor rotor 411 rotates and the motor shaft 43 rotates synchronously; optionally, the motor shaft 43 and the electronic rotor rotate asynchronously.
  • the motor stator 412 is used to cooperate with the motor rotor 411. The cooperation manner between the electronic stator, the motor rotor 411, and the motor shaft 43 is the prior art, and is not specifically described here.
  • the protective cover 44 is detachably connected to the motor mounting surface 422, and the protective cover 44 and the motor base 42 together form an accommodation cavity.
  • the connection end of the motor shaft 43, the motor rotor 411, and the motor stator 412 are housed in In the accommodating cavity, the components such as the motor rotor 411 and the motor stator 412 are sealed by the accommodating cavity, thereby protecting the components such as the motor rotor 411 and the motor stator 412.
  • the static seal 45 of this embodiment is provided at the connection between the protective cover 44 and the motor base 42, and the static seal between the protective cover 44 and the motor base 42 is achieved by the static seal 45 to prevent liquid from the protective cover 44 and the motor base 42.
  • the gap at the connection enters the receiving cavity.
  • the movable seal 46 is housed in the mounting hole 423, and one end of the movable seal 46 abuts the outer circumferential surface of the motor shaft 43 near the power output end, and the other end contacts the inner side wall of the mounting hole 423.
  • the dynamic seal between the outer circumferential surface of the motor shaft 43 near the power output end and the side wall of the mounting hole 423 prevents liquid from entering the accommodation from the gap between the outer circumferential surface of the motor shaft 43 near the power output end and the side wall of the mounting hole 423. Cavity.
  • a static seal 45 is provided at the connection between the protective cover 44 and the motor base 42
  • a dynamic seal 46 is provided at the connection between the motor shaft 43 and the mounting hole 423.
  • the combination of dynamic and static sealing is adopted. In this way, the motor is isolated from the outside world, preventing liquid from entering the motor from the connection between the protective cover 44 and the motor base 42, the connection between the motor shaft 43 and the mounting hole 423, effectively protecting the motor and increasing the service life of the motor.
  • the protective cover 44 and the motor mounting surface 422 can be fitted by detachable connection methods such as snap-on, screw connection, and snap-in connection.
  • the motor mounting surface 422 is provided with a first fixed connection member
  • the protective cover 44 corresponds to the first
  • the fixed connection member is provided with a second fixed connection member.
  • the first fixed connecting member is matched with the second fixed connecting member so that the protective cover 44 is detachably connected to the motor mounting surface 422.
  • the first fixed connection member is a screw hole
  • the second fixed connection member is a screw.
  • the static seal 45 may be a seal ring or other structures capable of achieving a static seal.
  • the static seal 45 is a seal ring.
  • the motor base 42 is provided with a mounting flange on the motor mounting surface 422, a sealing ring is sleeved and fixed on the mounting flange of the motor base 42, and a protective cover 44 is sleeved and fixed on the mounting flange of the motor base 42, and is The seal ring abuts, and by providing the seal ring, a sealed connection between the protective cover 44 and the mounting flange is achieved.
  • the seal ring of this embodiment may be a rubber seal ring, or may be another flexible seal ring.
  • the dynamic seal 46 may be a sealing frame or other structures capable of achieving dynamic sealing.
  • the movable seal 46 is a seal skeleton, and the seal skeleton is ring-shaped.
  • the ring-shaped seal skeleton is sleeved on the motor shaft 43. By setting the ring-shaped seal skeleton, the outer shaft surface of the motor shaft 43 close to the power output end is realized. Sealed with the inner wall of the mounting hole 423.
  • the specific structure of the sealing skeleton can be designed according to requirements.
  • FIG. 15 in order to reduce the weight of the sealing skeleton and reduce the impact of the sealing skeleton on the load of the motor, see FIG. 15.
  • the first abutment portion 462 and the second abutment portion 463 are along the axis of the motor shaft 43. ⁇ distributed.
  • the weight of the seal frame is reduced; and by the first abutment portion 462 and the second abutment portion 463 located on both sides of the first recessed portion 461, the outer periphery of the seal frame and the motor shaft 43 is realized
  • the connection at different positions on the surface ensures a sealed connection between the sealing skeleton and the outer peripheral surface of the motor shaft 43.
  • a third abutment portion 464 is provided on the side of the sealing skeleton remote from the motor shaft 43, and the inner wall of the mounting hole 423 is provided. There is a stepped portion, and the third abutting portion 464 is in abutment with the stepped portion. Through the abutting cooperation of the third abutting portion 464 and the stepped portion, the sealing connection between the sealing skeleton and the inner wall of the mounting hole 423 is achieved.
  • the third contact portion 464 and the first contact portion 462 and / or the third contact portion 464 A second recessed portion 465 is provided between the first recessed portion 461 and the first recessed portion 461.
  • the recessed direction of the second recessed portion 465 is toward the power output end.
  • the motor of this embodiment may further include a first bearing 47, and the first bearing 47 is sleeved and fixed on the power output end.
  • the first bearing 47 may be directly connected to the diaphragm 3 or connected to the diaphragm 3 through a transmission mechanism 6 to directly or indirectly transmit the power output from the power output end to the diaphragm 3 to drive the diaphragm 3 to reciprocate.
  • the first bearing 47 of this embodiment is exposed from the motor.
  • the first bearing 47 is a waterproof bearing, which is beneficial to the waterproof protection of the first bearing 47.
  • the motor shaft 43 of this embodiment is rotatably inserted into the mounting hole 423 through the second bearing 410.
  • the second bearing 410 is located in the mounting hole 423 and is disposed near the power output end.
  • the movable seal 46 is close to the second bearing. 410 settings.
  • the motor rotor 411 is sleeved on the motor shaft 43, and the motor rotor 411 rotates to drive the motor shaft 43 to rotate.
  • the motor rotor 411 and the motor shaft 43 are integrally formed, and the motor rotor 411 rotates to drive the motor shaft 43 to rotate synchronously.
  • the motor rotor 411 and the motor shaft 43 are independent components, and the motor rotor 411 is fixedly sleeved on the motor shaft 43.
  • the motor shaft 43 can rotate synchronously or asynchronously with the motor rotor 411.
  • the motor stator 412 is rotatably sleeved on the motor shaft 43 and is located in the motor rotor 411. When the motor is in operation, the motor stator 412 remains stationary. Optionally, the motor stator 412 is rotatably sleeved on the motor shaft 43 through the third bearing 420.
  • the motor rotor 411 in this embodiment includes a rotor coil, and the motor stator 412 includes a stator coil.
  • the rotor coil and the stator coil cooperate to make the motor rotor 411 rotate.
  • the motor of this embodiment may further include an electrical interface 413 and an electrical plug 48.
  • the electrical interface 413 is provided on the motor base 42, and the electrical interface 413 is electrically connected to the rotor coil and the stator coil, respectively.
  • the electrical plug 48 of this embodiment is detachably and electrically connected to the electrical interface 413.
  • An external power source is connected through the electrical plug 48 to supply power to the motor.
  • the rotor coil and the stator coil are electrically connected and the motor rotor 411 rotates.
  • the motor in this embodiment may further include a circuit board 414, which is used to control the motor operation and / or detect the motor working parameters.
  • the electrical interface 413 is electrically connected to the rotor coil and the stator coil respectively through a circuit board 414.
  • the circuit board 414 is housed in the accommodating cavity, and the circuit board 414 is sleeved on the motor shaft 43.
  • the circuit board 414 is located between the movable seal 46 and the motor stator 412.
  • the motor of this embodiment may further include a sealing structure 49 that is disposed on an inner side wall of the electrical interface 413.
  • a sealing structure 49 that is disposed on an inner side wall of the electrical interface 413.
  • the sealing structure 49 of this embodiment is a flexible sealing ring, such as a rubber sealing ring.
  • the sealing structure 49 is used to statically seal the connection between the electrical interface 413 and the electrical plug 48, and prevent liquid from leaking from the gap between the electrical interface 413 and the electrical plug 48. Enter the receiving cavity.
  • the fixed connection between the sealing structure 49 and the electrical interface 413 can be selected from any existing connection methods.
  • the outer wall of the sealing structure 49 is provided with a protrusion, and the corresponding position of the electrical interface 413 is provided with a groove. Groove fit.
  • the motor base 42 is provided with a third fixed connection member adjacent to the electrical interface 413, and the electric plug 48 is provided with a fourth fixed connection member corresponding to the third fixed connection member, and the third fixed connection And the fourth fixed connecting member are matched so that the electrical plug 48 and the electrical interface 413 are detachably connected.
  • the third fixed connecting member is a screw hole
  • the fourth fixed connecting member is a screw.
  • the waterproof level of the motor can reach IP68, which can prevent liquid from entering the motor, effectively protect the motor, and increase the service life of the motor.
  • the pressure relief port 13 and the motor are respectively disposed on opposite sides of the pump body 1 (or other different sides on the pump body 1) to prevent pesticides flowing out of the pressure relief port 13 from entering the motor.
  • the diaphragm pump 520 of the above embodiment can be applied to an airborne spraying system 500, which can be mounted on an agricultural plant protection machine, such as a plant protection drone, a pesticide spraying vehicle, or a human spraying device.
  • an agricultural plant protection machine such as a plant protection drone, a pesticide spraying vehicle, or a human spraying device.
  • the first embodiment of the present invention further provides an airborne spraying system 500.
  • the airborne spraying system 500 may include a fixing frame 510, a diaphragm pump 520, and a connecting member 530.
  • the fixing frame 510 is provided with a plurality of openings 511. Each opening 511 includes a first opening 5111 and a second opening 5112 communicating with the first opening 5111. The diameter of the first opening 5111 is larger than the diameter of the second opening 5112.
  • the diaphragm pump 520 and the connecting member 530 also include a plurality of, optionally, the opening 511, the diaphragm pump 520, and the connecting member 530 have a one-to-one correspondence relationship, and the multiple connecting members 530 are used to fix the multiple diaphragm pumps 520 to the corresponding ones. In the opening 511.
  • each connecting piece 530 has a connecting body 531 and a stopping portion 532.
  • the connection body 531 is fixedly connected to the corresponding diaphragm pump 520, and the stopper portion 532 is provided on the connection body 531.
  • the size of the stopping portion 532 in this embodiment is larger than the diameter of the second opening 5112 and smaller than or equal to the diameter of the first opening 5111, so that the stopping portion can pass through the first opening 5111, but cannot pass through the second opening.
  • the size of the stopper portion 532 refers to the size of the stopper portion 532 in a direction perpendicular to the direction in which the stopper portion 532 penetrates the first opening 5111.
  • the installation process of the diaphragm pump 520 includes: firstly fixing the end of the connecting body 531 of the connecting member 530 away from the stopper 532 to the diaphragm pump 520, and then passing the stopper 532 through the first opening 5111 to connect the main body 531 slides from the first opening 5111 into the second opening 5112, and the stopper 532 is blocked by the peripheral edge of the second opening 5112, thereby fixing the corresponding diaphragm pump 520 on the fixing frame 510.
  • the disassembling process of the diaphragm pump 520 includes: sliding the connecting body 531 of the connecting member 530 from the second opening 5112 into the first opening 5111. At this time, the stopper 532 can be released from the first opening 5111 in the direction of the corresponding diaphragm pump 520. , So that the connecting piece 530 is separated from the opening 511, and the corresponding diaphragm pump 520 is detached from the fixing frame 510.
  • the connecting member 530 is passed through the first One opening 5111 can be slid into the second opening 5112.
  • the connecting member 530 is slid from the second opening 5112 to the first opening 5111, and then the connecting member 530 is removed from the first
  • the opening 5111 can be pulled out, and the simple and low-cost connecting piece 530 cooperates with the opening 511 to realize the rapid installation and removal of the diaphragm pump 520.
  • the process of installing and removing the diaphragm pump 520 is simple, the operation steps are simple, and it is easy to implement. This saves time for the integration of multiple diaphragm pumps 520 and facilitates the maintenance or replacement of the diaphragm pump 520 when the diaphragm pump 520 is damaged later.
  • the fixing frame 510 may include a fixing plate.
  • the fixing plate is a carbon plate. It can be understood that the diaphragm pump 520 in the airborne spraying system 500 can also be replaced with another type of pump.
  • a plurality of openings 511 are arranged on the fixing frame 510 in a row at intervals.
  • This arrangement of the openings 511 makes a plurality of diaphragm pumps 520 fixed to the fixing frame 510 in a row.
  • the leaked liquid which can be water or chemical liquid
  • the arrangement of the plurality of openings 511 is not limited to this, and other arrangements can also be selected.
  • the plurality of openings 511 are arranged in two rows above and below, and each row includes one or more spaced-apart diaphragm pumps 520.
  • the adjacent openings 511 in the upper and lower rows of openings 511 are staggered to reduce the impact of the diaphragm pump 520 fixed by the upper row of openings 511 on the diaphragm pump 520 fixed by the lower row of openings 511 due to damage and leakage.
  • an installation direction of the openings 511 arranged at a row interval is referred to as a first direction.
  • the first opening 5111 is located above the second opening 5112, and the connecting body 531 can relatively easily slide from the first opening 5111 into the second opening 5112.
  • the first opening 5111 is located directly above the second opening 5112, and the line connecting the center of the first opening 5111 and the center of the second opening 5112 is perpendicular to the first direction.
  • the second opening 5112 is offset from one side of the first opening 5111 and is located below the first opening 5111.
  • the center line of the first opening 5111 and the center of the second opening 5112 are inclined relative to the first direction.
  • the first opening 5111 and the second opening 5112 may also be arranged along the first direction, and the line connecting the center of the first opening 5111 and the center of the second opening 5112 is parallel to the first direction.
  • the shape of the first opening 5111 and the second opening 5112 can be set as required.
  • the first opening 5111 is a circular hole
  • the second opening 5112 is a non-circular hole (such as a square hole).
  • the first opening 5111 is a non-circular hole (such as a square hole)
  • the second opening 5112 is a circular hole.
  • the first opening 5111 and the second opening 5112 are both circular holes.
  • the plurality of connecting members 530 in this embodiment may be provided independently of each other, or may be an integrated structure. In one embodiment, a plurality of connecting members 530 are provided independently of each other. Each connecting member 530 fixes a corresponding diaphragm pump 520 in a corresponding opening 511. Each diaphragm pump 520 can be independently installed and removed with respect to the fixing frame 510. Facilitate later maintenance.
  • an end of the connecting body 531 of each connecting member 530 remote from the stopping portion 532 is integrally formed on the casing of the diaphragm pump 520.
  • an end of the connecting body 531 of each connecting member 530 far from the stopper 532 is detachably connected to the casing of the diaphragm pump 520, for example, it is detachably connected to the diaphragm pump 520 by means of screw connection, snap-in, or the like. On the shell.
  • connection bracket 533 is fixedly connected to the plurality of diaphragm pumps 520.
  • connection bracket 533 can be detachably connected to each diaphragm pump 520, for example, it can be detachably connected to the casing of the diaphragm pump 520 by means of screw connection, snap-in, etc. In this way, the diaphragm pump 520 can be separately connected from the connection bracket 533 The disassembly is convenient for the later disassembly and maintenance of the diaphragm pump 520 that has failed.
  • connection main body 531 is in an interference fit with the second opening 5112, the connection main body 531 is squeezed into the second opening 5112, and the diaphragm pump 520 can be fixed to the second opening 5112 relatively firmly by the connecting member 530, thereby avoiding During the operation of the on-board spraying system 500, the diaphragm pump 520 was shaken due to the unstable connection between the diaphragm pump 520 and the second opening 5112.
  • connection main body 531 and the second opening 5112 can also be fitted with a clearance, so that the connection main body 531 can be switched between the first opening 5111 and the second opening 5112, thereby facilitating the installation and removal of the diaphragm pump 520.
  • a fixing portion may be provided on the periphery of the second opening 5112, and the fixing portion cooperates with the stop portion 532 to thereby separate the diaphragm.
  • the pump 520 is stably fixed on the second opening 5112.
  • the fixing portion and the stopping portion 532 can be matched with each other by a snap connection or a plug connection.
  • the area of the portion of the stopper 532 that is blocked by the peripheral edge of the second opening 5112 is larger than a predetermined area threshold, and the diaphragm pump 520 is further stably fixed on the second opening 5112.
  • the size of the stop portion 532 is equal to the diameter of the first opening 5111.
  • the stopper portion 532 may be pulled or pressed with a larger force, so that the inner edge of the first opening 5111 presses the stopper portion 532, so that the stopper portion 532 is deformed to pass through the first opening 5111.
  • the size of the stopper portion 532 is smaller than the diameter of the first opening 5111, and the stopper portion 532 can pass through the first opening 5111 relatively easily, thereby facilitating the installation and removal of the diaphragm pump 520.
  • the connecting member 530 in this embodiment may be a flexible material, such as rubber or plastic, so as to reduce vibration of the diaphragm pump 520 during operation or during transportation.
  • each diaphragm pump 520 includes a water inlet.
  • the water inlets of the multiple diaphragm pumps 520 face the same.
  • the water inlets of the multiple diaphragm pumps 520 are oriented differently or partly.
  • the diaphragm pump 520 in order to slow down the flow of flow between multiple diaphragm pumps 520, referring to FIG. 18, the diaphragm pump 520 further includes a water separator 540, and the water inlet of each diaphragm pump 520 is in communication with the water separator 540.
  • the water inlets of the multiple diaphragm pumps 520 in this embodiment face the same.
  • the water inlets of the plurality of diaphragm pumps 520 communicate with each other through the water separator 540.
  • the water separator 540 draws out the liquid in the liquid storage tank 200 and pumps it out through a plurality of diaphragm pumps 520.
  • a sub-tank 541 is provided near each water inlet of the water separator 540, and the sub-water tank 541 is in communication with the corresponding water inlet.
  • the water inlet enters the corresponding diaphragm pump 520, which further slows down the flow fluctuation between the multiple diaphragm pumps 520 and ensures the stability of the spray pressure of the airborne spray system 500.
  • the auxiliary water tank 541 is a flexible material, such as rubber or plastic.
  • the auxiliary water tank 541 of the flexible material can deform to absorb the pulsating pressure of the water inlet due to the unstable liquid flow, thereby ensuring the stability of the spray pressure of the airborne spray system 500. .
  • each diaphragm pump 520 in this embodiment may further include a water outlet.
  • the water outlets of the plurality of diaphragm pumps 520 are oriented in the same direction and opposite to the water inlets.
  • the directions of the water outlets of the multiple diaphragm pumps 520 are different or partially different.
  • the diaphragm pump 520 has a top and a bottom, with the top as “upper” and the bottom as “down” as reference.
  • the water inlet and outlet of the diaphragm pump 520 are further described.
  • the water inlets of the plurality of diaphragm pumps 520 face downward, and the water outlets of the plurality of diaphragm pumps 520 face upward, which is beneficial to the layout of the pipeline 300.
  • a pressure detection device is generally installed on the diaphragm pump 520.
  • the diaphragm pump 520 uses a built-in pressure detection device.
  • the pressure detection device is extremely easy to damage and needs to be maintained or replaced regularly.
  • disassembly and replacement are particularly troublesome.
  • the entire diaphragm pump 520 needs to be scrapped. .
  • each diaphragm pump 520 may further be provided with a pressure gauge 550 for detecting a pressure change in the diaphragm pump 520.
  • the pressure gauge 550 is detachably connected to the corresponding diaphragm pump 520.
  • the pressure gauge 550 of this embodiment is external and detachable.
  • the pressure gauge 550 is easy to assemble and disassemble, and it is not necessary to remove the diaphragm pump 520, or it can be separately Replace the pressure gauge 550.
  • the pressure gauge 550 may be detachably connected to the corresponding diaphragm pump 520 through a thread or a flange.
  • the position where the pressure gauge 550 is connected to the diaphragm pump 520 can be selected according to needs.
  • the pressure gauge 550 is provided at the bottom of the corresponding diaphragm pump 520 to facilitate pressure.
  • Meter 550 for quick disassembly.
  • each diaphragm pump 520 further includes a driving mechanism 4 as a driving source of the diaphragm pump 520.
  • the type of the driving mechanism 4 can be selected according to needs.
  • the driving mechanism 4 includes a motor.
  • the motor is located on the top of the corresponding diaphragm pump 520. To prevent the diaphragm pump 520 from being damaged and leaking, the leaked liquid enters the motor to achieve protection.
  • the purpose of the motor is directly disposed on the top of the diaphragm pump 520.
  • the motor is disposed at a certain distance from the top of the diaphragm pump 520.
  • the motor of this embodiment may be directly or indirectly fixedly connected to the top of the diaphragm pump 520. It can be understood that the motor can also be replaced with another driving device.
  • the airborne spraying system 500 may further include a mounting bracket 560, which is used for fixed connection with external equipment, and the mounting bracket 560 is fixedly connected with the fixing frame 510.
  • the mounting bracket 560 is fixedly connected to the external device, thereby fixing the airborne spraying system 500 on the external device.
  • the mounting bracket 560 and the fixing bracket 510 can be detachably fixedly connected, and the mounting bracket 560 and the fixing bracket 510 can be detachably fixed.
  • Any existing fixing method can be selected, for example, the mounting bracket 560 and the fixing bracket 510 are based on threads and quick-release parts. Removable connection by welding or other methods.
  • the mounting bracket 560 is integrally formed with the fixing frame 510.
  • the mounting bracket 560 may include one or more.
  • the mounting bracket 560 includes a plurality of mounting brackets 560, and the plurality of mounting brackets 560 are disposed on the fixing frame 510 at intervals.
  • the plurality of mounting brackets 560 are fixedly connected to the external device, respectively, so that the airborne spray system 500 is stably fixed on the external device.
  • the external equipment is an agricultural plant protection machine, such as a plant protection drone, a pesticide spraying vehicle, a human spraying device, etc.
  • the airborne spraying system 500 of this embodiment is applied to an agricultural plant protection machine to meet the large flow in the field of plant protection The need for multiple spray heads 400 for spraying and independent control.
  • the mounting bracket 560 can be installed on the frame 100 of the plant protection drone, so as to mount the airborne spraying system 500 on the frame 100.
  • a second embodiment of the present invention provides an agricultural plant protection machine, including a frame 100, a liquid storage tank 200 for storing a medicinal solution, a pipe 300 communicating with the liquid storage tank 200, a plurality of spray heads 400, and a diaphragm pump.
  • the diaphragm pump can pump pesticides from the liquid storage tank 200 to the spray head 400, the spray liquid is sprayed from the spray head 400, and the pesticide is sprayed on the crops.
  • the agricultural plant protection machine in this embodiment may be a plant protection drone, or a pesticide spraying vehicle or a human spraying device.
  • the diaphragm pump is the diaphragm pump 520 of the first embodiment.
  • the liquid inlet 11 of the diaphragm pump 520 communicates with the liquid storage tank 200 through a pipe 300
  • the liquid outlet 12 communicates with the spray head 400 through a pipe 300.
  • the diaphragm pump 520 pumps the pesticide from the liquid storage tank 200 to the spray head 400, and the spray liquid is sprayed from the spray head 400 to spray the pesticide on the crops.
  • the diaphragm pump 520 is fixedly connected to the frame 100.
  • the frame 100 includes a fuselage 110 and a tripod 120 connected to the bottom of the fuselage 110.
  • the pump body 1 or the pump cover 8 of the diaphragm pump 520 is installed on the tripod 120.
  • the pump body 1 or The fixed connection manner between the pump cover 8 and the bottom of the tripod 120 may be selected from any existing fixing manners, for example, threading, snapping, and the like.
  • the rack 100 may further include an arm 130 connected to the body 110, and the spray head 400 is disposed at an end of the arm 130 remote from the body 110.
  • the diaphragm pump is the airborne spraying system 500 of the first embodiment.
  • a plurality of diaphragm pumps 520 of the airborne spraying system 500 are connected between the storage tank 200 and the corresponding spray head 400 through a pipeline 300.
  • the diaphragm pump 520 is used to pump the liquid medicine in the storage tank 200 to
  • the corresponding spray head 400 sprays the medicinal solution from the spray head 400 and sprays pesticides on the crops.
  • the water separator 540 of the airborne spraying system 500 in this embodiment includes an inlet and a plurality of outlets.
  • the inlet of the water separator 540 is in communication with the liquid storage tank 200.
  • the inlet of the water separator 540 communicates with the liquid storage tank 200 directly or through a pipe 300.
  • the water inlet of each diaphragm pump 520 communicates with the water separator 540 through an outlet of the water separator 540.
  • the water inlet of each diaphragm pump 520 communicates with the corresponding outlet directly or through the pipeline 300.
  • the water outlet of each diaphragm pump 520 is in communication with the corresponding spray head 400 through a pipe 300.
  • the liquid medicine in the liquid storage tank 200 enters the water separator 540 through the inlet of the water separator 540.
  • the water separator 540 evenly distributes the liquid medicine to each diaphragm pump 520, and the multiple liquid medicine pumps 520 pump the liquid medicine to the corresponding
  • the spray head 400 sprays the medicinal solution, and sprays the medicinal solution on the crops.
  • the mounting bracket 560 of the airborne spray system 500 is fixedly connected to the rack 100.
  • the rack 100 includes a main body 110 and a tripod 120 connected to the bottom of the main body 110, and a mounting bracket 560 is fixedly connected to the bottom of the main body 110.
  • the fixing connection method between the mounting bracket 560 and the bottom of the fuselage 110 can be selected from any existing fixing methods, such as threading, snapping, and the like.
  • the rack 100 may further include an arm 130 connected to the body 110, and the spray head 400 is disposed at an end of the arm 130 remote from the body 110.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Insects & Arthropods (AREA)
  • Pest Control & Pesticides (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Reciprocating Pumps (AREA)

Abstract

一种农业植保机的隔膜泵及农业植保机,所述隔膜泵(520)包括泵体(1)、盖设在泵体(1)上的泵盖(8)、设于泵体(1)内的隔膜片(3)与隔膜片(3)相连的驱动机构(4)和隔膜支撑(5),隔膜片(3)与泵盖(8)相配合,以使隔膜片(3)与泵盖(8)包围形成腔体,隔膜支撑(5)的一端与隔膜片(3)远离泵盖(8)一侧抵接,另一端与驱动结构(4)连接,隔膜支撑(5)与隔膜片(3)远离泵盖(8)一侧的接触面积大于预设面积阈值;驱动机构(4)驱动隔膜片(3)相对泵盖(8)往复运动,使得腔体减小或增大。通过设置隔膜支撑(5),使得隔膜片(3)沿着同一方向往复运动,而减少隔膜片(3)在其他方向的运动,改善了隔膜片(3)的受力状况,延长了隔膜片(3)的使用寿命,并保证了腔体内的农药能被完全排出。

Description

农业植保机的隔膜泵及农业植保机 技术领域
本发明涉及泵领域,尤其涉及一种农业植保机的隔膜泵及农业植保机。
背景技术
农业植保机用于实现喷洒作业,可以喷洒农药。目前大都采用泵来驱动农业植保机来实现喷洒作业。由于农药的腐蚀性较强,泵需要具备一定的耐腐蚀能力,故在农业植保机上,通常采用隔膜泵来泵取农药至喷头。隔膜泵是通过隔膜的往复运动来实现隔膜腔的体积变化,从而将农药泵出。
现有隔膜泵中,一般采用曲柄滑块机构来驱动隔膜的往复运动,曲柄滑块机构与隔膜通过铰链连接,隔膜不仅承受上下运动的变形力,还需要承受左右晃动的变形力,导致隔膜受力状态较复杂、寿命变短。另外,隔膜一般直接连接隔膜支架,在隔膜运动使得隔膜腔变小而排出隔膜腔体内的农药时,由于隔膜腔的压力,导致隔膜不能够完全被顶起,隔膜腔体积变化较小,损失了排量。
发明内容
本发明提供一种农业植保机的隔膜泵及农业植保机。
具体地,本发明是通过如下技术方案实现的:
根据本发明的第一方面,提供一种农业植保机的隔膜泵,所述隔膜泵包括:
泵体;
盖设在所述泵体上的泵盖;
设于所述泵体内的隔膜片,所述隔膜片与所述泵盖相配合,以使所述隔膜片与所述泵盖包围形成腔体;
与所述隔膜片相连的驱动机构;以及
隔膜支撑,所述隔膜支撑的一端与所述隔膜片远离所述泵盖一侧抵接,另一端与驱动结构连接,所述隔膜支撑与所述隔膜片远离所述泵盖一侧的接触面积大于预设面积阈值;
其中,所述驱动机构驱动所述隔膜片相对所述泵盖往复运动,使得所述腔体减小或增大。
根据本发明的第二方面,提供一种农业植保机,包括机架、用于存储药液的储液箱、与储液箱相连通的管道以及喷洒组件,还包括通过所述管道连接于储液箱和喷洒组件之间的隔膜泵,所述隔膜泵包括:
泵体;
盖设在所述泵体上的泵盖;
设于所述泵体内的隔膜片,所述隔膜片与所述泵盖相配合,以使所述隔膜片与所述泵盖包围形成腔体;
与所述隔膜片相连的驱动机构;以及
隔膜支撑,所述隔膜支撑的一端与所述隔膜片远离所述泵盖一侧抵接,另一端与驱动结构连接,所述隔膜支撑与所述隔膜片远离所述泵盖一侧的接触面积大于预设面积阈值;
其中,所述驱动机构驱动所述隔膜片相对所述泵盖往复运动,使得所述腔体减小或增大。
由以上本发明实施例提供的技术方案可见,本发明通过在隔膜片远离腔体的一侧抵接隔膜支撑,并将隔膜支撑与隔膜片远离腔体的一侧之间的接触面的面积设计的足够大,使得隔膜片沿着同一方向往复运动,而减少隔膜片在其他方向的运动,改善了隔膜片的受力状况,延长了隔膜片的使用寿命,并保证了隔膜片能被驱动机构充分顶起(驱动机构驱动隔膜片朝向泵盖运动),使得隔膜片具有足够的变形量,从而保证了腔体的体积改变量,保证了腔体内的农药能被完全排出。
附图说明
为了更清楚地说明本发明实施例中的技术方案,下面将对实施例描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。
图1是本发明一实施例中的隔膜泵的结构拆分图;
图2是本发明一实施例中的隔膜泵的立体示意图;
图3是本发明一实施例中的隔膜泵在另一方向上的立体示意图;
图4是本发明一实施例中的隔膜泵的结构拆分图;
图5是本发明一实施例中的隔膜泵的剖面示意图;
图6是本发明另一实施例中的隔膜泵的立体图;
图7是本发明另一实施例中的隔膜泵的结构拆分示意图;
图8是本发明另一实施例中的隔膜泵的另一结构拆分示意图;
图9是本发明另一实施例中的隔膜泵的剖面示意图;
图10是本发明又一实施例中的隔膜泵的立体示意图;
图11是本发明又一实施例中的隔膜泵的部分结构拆分示意图;
图12是本发明又一实施例中的隔膜泵的剖面示意图;
图13是本发明一实施例中的电机的立体图;
图14是本发明一实施例中的电机的剖面图;
图15是图14中部分结构的局部放大图;
图16是本发明一实施例中的电机的结构拆分图;
图17是本发明一实施例中的电机的另一结构拆分图;
图18是本发明一实施例中的机载喷洒系统的结构示意图;
图19是本发明一实施例中的机载喷洒系统的开口的结构示意图;
图20是本发明一实施例中的机载喷洒系统的连接件的结构示意图;
图21是本发明一实施例中的机载喷洒系统的连接件的一具体结构示意图;
图22是本发明一实施例中的机载喷洒系统在另一方向上的结构示意图;
图23是本发明一实施例中的农业植保机的立体图。
附图标记:
100:机架;110:机身;120:脚架;130:机臂;200:储液箱;300:管道;400:喷头;500:机载喷洒系统;
510:固定架;511:开口;5111:第一开口;5112:第二开口;
520:隔膜泵;
1:泵体;11:进液口;12:出液口;13:泄压口;14:回液口;15:第二凸起;16:第二固定连接部件;
2:泄压装置;21:阀门;22:弹性复位件;23:盖体;24:调节件;25:行程开关;26:辅助件;27:固定件;
3:隔膜片;
4:驱动机构;41:电机主体;411:电机转子;412:电机定子;413:电接口;414:电路板;42:电机座;421:泵体安装面;422:电机安装面;423:安装孔;43:电机轴;44:保护盖;45:静密封件;46:动密封件;461:第一凹陷部;462:第一抵接部;463:第二抵接部;464:第三抵接部;465:第二凹陷部;47:第一轴承;48:电插头;49:密封结构;410:第二轴承;420:第三轴承;
5:隔膜支撑;
6:传动机构;61:偏心转动件;62:支架;63:连接部件;
7:垫片;
8:泵盖;
9:阀盖;91:第一固定连接部件;92:第一凸起;
10:第一单向阀;101:第一阀芯;102:第一弹性件;
20:第二单向阀;201:第二阀芯;202:第二弹性件;
530:连接件;531:连接主体;532:止挡部;533:连接支架;
540:分水器;541:副水箱;
550:压力计;
560:安装支架。
具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
下面结合附图,对本发明的农业植保机的隔膜泵及农业植保机进行详细说明。在不冲突的情况下,下述的实施例及实施方式中的特征可以相互组合。
实施例一
结合图1至图5,本发明实施例一提供一种隔膜泵,该隔膜泵520可包括泵体1、泵盖8、隔膜片3、驱动机构4以及隔膜支撑5。其中,泵盖8盖设在泵体1上,隔膜片3设于泵体1内。本实施例的隔膜片3与泵盖8相配合,具体的,隔膜片3与泵盖8包围形成腔体。驱动机构4与隔膜片3相连,本实施例中,驱动机构4与隔膜片3远离腔体的一侧直接或间接连接,驱动机构4用于驱动隔膜片3相对泵盖8往复运动,使得腔体减小或增大。当驱动机构4驱动隔膜片3朝向泵盖8运动,即驱动机构4挤压隔膜片3时,腔体体积减小,腔体内的农药被排出;当驱动机构4驱动隔膜片3远离泵盖8运动,即驱动机构4拉伸隔膜片3时,腔体体积增大,农药由外部吸入腔体内。
在本实施例中,隔膜支撑5的一端与隔膜片3远离泵盖8一侧抵接,另一端与驱动结构连接,并且,本实施例的隔膜支撑5与隔膜片3远离泵盖8一侧(以下实施例简称抵接面)的接触面积大于预设面积阈值。通过在隔膜片3远离腔体的一侧抵接隔膜支撑5,并将隔膜支撑5与隔膜片3远离腔体的一侧之间的接触面的面积设计的 足够大,在驱动机构4驱动隔膜片3相对泵盖8运动时,通过隔膜支撑5对隔膜片3的限位,使得隔膜片3沿着同一方向往复运动,而减少隔膜片3在其他方向的运动,改善了隔膜片3的受力状况,延长了隔膜片3的使用寿命;在驱动机构4驱动隔膜片3朝向泵盖8运动时,由于隔膜支撑5的抵接,隔膜片3能够被充分顶起而具有足够的变形量,从而保证了腔体的体积改变量,保证了腔体内的农药能被完全排出。
本实施例中,隔膜片3可包括连接部以及位于连接部外边缘的支撑部,连接部由驱动机构4驱动而移动,支撑部装配于对应的泵盖8上。支撑部的外边缘可分别通过卡接或者其他方式装配至泵盖8上。可选的,连接部的厚度大于隔膜片3其他部分的厚度,由于连接部由驱动机构4驱动而移动,将连接部的厚度设计得较厚,连接部即使存在磨损,不会影响连接部在驱动机构4的驱动下而移动。其中,厚度是指隔膜片3在其移动方向上的厚度。
在本实施例中,隔膜片3呈圆形。当然,在其他实施例中,隔膜片3也可为其他规则或不规则形状。
预设面积阈值可以通过占比(隔膜支撑5与抵接面的接触面积与抵接面的表面积的占比)的形式体现,也可以通过面积大小的方式体现。在本实施例中,隔膜支撑5与抵接面的接触面积与抵接面的表面积的占比大于或者等于80%,如85%、90%、95%或者100%等。
预设面积阈值可根据需要隔膜泵520的排量需求进行设计,例如,在其中一实施例中,隔膜支撑5与抵接面的接触面积与抵接面的表面积的占比大于或者等于100%,即隔膜支撑5覆盖抵接面。驱动机构4挤压隔膜片3时,在隔膜支撑5的挤压作用下,隔膜片3背对抵接面的表面能够尽可能与泵盖8贴合,腔体的体积足够小,以尽可能将腔体内的农药排尽。本实施例中,隔膜支撑5朝向隔膜片3的表面的面积与抵接面的面积相等,或者隔膜支撑5朝向隔膜片3的表面的面积稍大于抵接面的面积,从而确保隔膜支撑5能够覆盖隔膜片3的抵接面。在另一实施例中,隔膜支撑5与抵接面的接触面积与抵接面的表面积的占比大于预设占比阈值、小于100%,隔膜支撑5未完全覆盖抵接面。
为更好地对隔膜片3进行限位,确保隔膜片3能够被充分顶起,保证隔膜片3具有足够的变形量,本实施例中,隔膜支撑5的刚度大于预设刚度阈值。其中,预设刚度阈值可根据需要设计,如10N/m。可选的,隔膜支撑5为刚性件。
此外,为了减小往复运动过程中隔膜支撑5对隔膜片3造成的磨损,本实施例的隔膜支撑5与隔膜片3远离泵盖8一侧抵接通过弧面抵接。
本实施例的隔膜泵520可以为单隔膜泵,也可以为双隔膜泵,以下实施例将对单隔膜泵和双隔膜泵的结构进行具体说明。以下实施例在对单隔膜泵和双隔膜泵的结构进行说明时,均以隔膜泵520应用在植保无人机为例,其中,植保无人机包括管道 300、用于存储农药的储液箱200以及喷头400。
在一实施例中,隔膜泵520为单隔膜泵,泵盖8和隔膜片3分别包括一个。驱动机构4挤压隔膜片3与驱动机构4拉伸隔膜片3形成一个运动周期。本实施例中,单隔膜泵还包括分别与腔体连通的进液口11和出液口12,进液口11可通过管道300与储液箱200连通,出液口12可通过管道300与喷头400连通。
单隔膜泵控制农药流向的过程包括:当腔体缩小时,腔体通过出液口12与管道300连通,进液口11关闭,腔体内的农药(由腔体在当前时刻前半个运动周期中抽吸的农药)经出液口12排至喷头400,由喷头400将农药喷洒至指定区域(农田、树林等)。当腔体增大时,腔体通过进液口11与储液箱200直接或间接连通,出液口12关闭,储液箱200内农药由进液口11进入腔体内。
可选的,进液口11和出液口12设于泵盖8的同一侧,使得单隔膜泵的结构更加紧凑,利于单隔膜泵的小型化设计,单隔膜泵具备体积小、重量轻、功耗小的优势,并且不会对搭载其的植保无人机的造成影响。
在另一实施例中,隔膜泵520为双隔膜泵。泵盖8包括两个,隔膜片3也包括两个。泵盖8与两个隔膜片3对应配合,两个泵盖8分别盖设在泵体1两侧,两个隔膜片3分别装配在对应的泵盖8上,腔体包括两个隔膜片3与对应的泵盖8包围形成的第一腔体和第二腔体。在本实施例中,驱动机构4驱动两个隔膜片3分别相对对应的泵盖8靠近或远离,使得第一腔体和第二腔体的大小朝着相反的方向变化。
具体而言,泵盖8包括第一泵盖和第二泵盖,隔膜片3包括第一隔膜片和第二隔膜片,第一隔膜片与第一泵盖配合,第二隔膜片与第二泵盖配合。本实施例中,第一隔膜片和第二隔膜片朝着相反的方向运动。当驱动机构4挤压第一隔膜片并拉伸第二隔膜片时,第一隔膜片靠近第一泵盖移动,第二隔膜片远离第二泵盖移动,从而使得第一腔体缩小、第二腔体扩大。当驱动机构4拉伸第一隔膜片并挤压第二隔膜片时,第一隔膜片远离第一泵盖移动,第二隔膜片靠近第二泵盖移动,从而使得第一腔体扩大、第二腔体缩小。本实施例中,驱动机构4挤压第一隔膜片并拉伸第二隔膜片以及驱动机构4拉伸第一隔膜片并挤压第二隔膜片这两个过程形成一个运动周期。
进一步的,隔膜泵520还包括分别与第一腔体连通的第一进液口和第一出液口以及分别与第二腔体连通的第二进液口和第二出液口,且第一进液口、第一出液口、第二进液口和第二出液口能够与管道300相连通,从而可通过控制第一进液口、第一出液口、第二进液口和第二出液口的启闭来控制管道300的液体流向。
双隔膜泵控制农药流向的过程包括:当第一腔体缩小,第二腔体扩大时,第一出液口、第二进液口与管道300连通,第一进液口、第二出液口关闭。第一出液口和第二进液口在药液的流动作用下开启,第一进液口和第二出液口在药液的流动作用下关闭。其中,第一腔体经第一出液口和管道300将该第一腔体内的药液(由第一腔体 在当前时刻的前半个运动周期中抽吸的药液)排出至喷头400,由喷头400将药液喷洒至指定区域(农田、树林等)。同时,第二腔体通过第二进液口和管道300从储液箱200中抽吸药液并储存在第二腔体内。由于第一进液口和第二出液口关闭,第一腔体不会通过第一进液口和管道300从储液箱200中抽吸药液,第二腔体也不会通过第二出液口和管道300将该第二腔体内的药液排出。
当第一腔体扩大,第二腔体缩小时,第一进液口、第二出液口与管道300连通,第一出液口、第二进液口关闭。第一进液口和第二出液口在药液的流动作用下开启,第一出液口和第二进液口在药液的流动作用下关闭。其中,第二腔体经第二出液口和管道300将该第二腔体内的药液(由第二腔体在当前时刻的前半个运动周期中抽吸的药液)排出至喷头400,由喷头400将药液喷洒至指定区域。同时,第一腔体通过第一进液口和管道300从储液箱200中抽吸药液并储存在第一腔体内。由于第一出液口和第二进液口关闭,第一腔体不会通过第一出液口和管道300将该第一腔体内的药液排出,第二腔体也不会通过第二进液口和管道300从储液箱200中抽吸药液。
本实施例中,将两个隔膜片3分别装配在对应的泵盖8上而形成两个腔体,耐腐蚀能力强,并且两个腔体的设计能够增加隔膜泵520的流量和压力大小。
可选的,第一进液口和第一出液口以及第二进液口和第二出液口分别设于对应的泵盖8的同一侧。将进液口11和出液口12设于对应泵盖8的同一侧,双隔膜泵的结构更加紧凑,利于双隔膜泵的小型化设计。本实施例的双隔膜泵具备体积小、重量轻、功耗小的优势,并且不会对搭载其的植保无人机的造成影响。
驱动机构4可直接驱动隔膜片3往复运动,也可间接驱动隔膜片3往复运动。例如,在其中一实施例中,驱动机构4与隔膜片3远离泵盖8的一侧通过铰链方式直接连接,驱动机构4驱动隔膜片3靠近或远离。
在另一实施例中,隔膜泵520还可包括传动机构6,驱动机构4通过传动机构6与隔膜片3连接,并且驱动机构4还通过传动机构6连接隔膜支撑5。本实施例中,传动机构6与驱动机构4和隔膜支撑5分别连接。驱动机构4转动,带动传动机构6推动隔膜支撑5和隔膜片3同时相对泵盖8来回移动,以改变腔体的大小。具体的,驱动机构4绕第一方向转动,带动传动机构6推动隔膜支撑5和隔膜片3同时相对泵盖8靠近,腔体逐渐减小;驱动机构4绕第二方向转动,带动传动机构6推动隔膜支撑5和隔膜片3同时相对泵盖8远离,腔体逐渐增大。
传动机构6可以为偏心转动结构,也可以为齿轮结构,还也为连杆机构。在本实施中,传动机构6可包括偏心转动件61。本实施例的驱动机构4与偏心转动件61连接,驱动机构4转动,带动偏心转动件61转动,偏心转动件61推抵隔膜片3移动。
以隔膜泵520为双隔膜泵为例对偏心转动件61进一步说明。
驱动机构4与偏心转动件61连接,驱动机构4转动,带动偏心转动件61转动, 偏心转动件61推抵两个隔膜片3移动。其中,偏心转动件61设于泵体1内且位于第一隔膜片和第二隔膜片之间,偏心转动件61的两侧分别活动抵接第一隔膜片和第二隔膜片。本实施例通过偏心转动件61将驱动机构4的转动力转换成推拉力,由于偏心转动件61转动至不同位置,偏心转动件61与第一隔膜片之间的距离(偏心转动件61的偏心位置至第一隔膜片的距离)以及偏心转动件61与第二隔膜片之间的距离(偏心转动件61的偏心位置至第二隔膜片的距离)会朝着相反的方向变化,当偏心转动件61与第一隔膜片之间的距离逐渐增大、并与第二隔膜片之间的距离逐渐减小时,偏心转动件61的推拉力会挤压第一隔膜片而拉拔第二隔膜片使得第一腔体缩小、第二腔体扩大。当偏心转动件61与第一隔膜片之间的距离逐渐减小、并与第二隔膜片之间的距离逐渐增大时,偏心转动件61的推拉力会拉拔第一隔膜片而挤压第二隔膜片使得第一腔体扩大、第二腔体缩小。
偏心转动件61可直接抵接或间接抵接第一隔膜片和第二隔膜片。例如,在其中一实施例中,偏心转动件61的两侧分别与第一隔膜片和第二隔膜片直接抵接。
在另一实施例中,结合图2至图5,偏心转动件61间接抵接第一隔膜片和第二隔膜片。传动机构6还可包括支架62以及设于支架62两侧的连接部件63,偏心转动件61插接于支架62中,两个隔膜片3分别位于支架62的两侧并与对应侧的连接部件63相连接。偏心转动件61转动,带动支架62和连接部件63抵推隔膜支撑5和隔膜片3移动。本实施例通过支架62以及连接部件63的配合,将偏心转动件61的回转运动转化为隔膜支撑5和隔膜片3的单向往复运动,实现农药的泵取功能。
本实施例中,支架62包括一收容空间(未标出),偏心转动件61收容在收容空间内并抵接支架62。通过设置支架62,降低偏心转动件61与第一隔膜片和第二隔膜片直接抵接而带来的第一隔膜片和第二隔膜片的磨损。
进一步的,为防止偏心转动件61与支架62相对转动而导致的偏心转动件61和支架62的结构磨损,本实施例的偏心转动件61和支架62的连接处设有垫片7。本实施例对垫片7的材质不作具体限定,可选择常规的耐磨材质制作垫片7。可选的,偏心转动件61的周向侧壁均与支架62的内侧壁抵接,垫片7为一防磨垫圈。可选的,参见图5,偏心转动件61的一部分与支架62的内侧壁抵接,垫片7为一片装结构件,降低了成本,并且降低了对偏心转动件61和支架62的尺寸要求。
本实施例的偏心转动件61可以为偏心轮,也可以为偏心轴承,还可以为其他偏心转动结构,具体可根据需要选择偏心转动件61的类型。
在一些实施例中,连接部件63一体成型于支架62的外侧壁。而在另一些实施例中,连接部件63和支架62分别独立设置。可选的,支架62设有插接槽,连接部件63插接在插接槽中。本实施例中,连接部件63可以为螺丝,也可以为其他结构件。
此外,隔膜支撑5和连接部件63之间的固定方式可采用现有任意固定方式, 本实施例中,隔膜支撑5套设固定在连接部件63上。在其他实施例中,隔膜支撑5也可通过螺纹、卡接等方式固定在连接部件63上。
本实施例中,驱动机构4可包括电机,电机的主轴伸入泵体1内并与传动机构6连接,从而将驱动力由所述传动机构6传递至隔膜片3上,以带动隔膜片3移动。以偏心转动件61为偏心轮为例对电机和传动机构6的配合进行说明。本实施例中,主轴穿设偏心轮和支架62。另外,可通过一固定块将主轴固定在所述支架62的底部。进一步的,隔膜泵520还可包括保护壳,该保护壳将电机盖设固定在泵体1的一侧,从而对电机进行固定,并保护电机。
结合图6至图9,该隔膜泵520还可包括第一单向阀10、第二单向阀20和阀盖9。在本实施例中,进液口11和出液口12与腔体分别连通,第一单向阀10用于控制进液口11启闭,第二单向阀20用于控制出液口12启闭。本实施例的阀盖9用于固定第一单向阀10和第二单向阀20,从而通过阀盖9集成第一单向阀10和第二单向阀20。
在本实施例中,阀盖9可拆卸连接在泵体1上,以将第一单向阀10和第二单向阀20固定在泵体1上,从而将第一单向阀10和第二单向阀20集成至泵体1上,相比现有隔膜泵520的单向阀通过阀座固定在隔膜片3上的方式,本实施例的第一单向阀10和第二单向阀20由于通过阀盖9集成至泵体1上,故在隔膜片3被拆卸后,第一单向阀10和第二单向阀20仍然通过阀盖9集成至泵体1上,而不会受到隔膜片3拆卸的影响。并且,阀盖9与泵盖8分别独立设置,泵盖8在被拆卸后,第一单向阀10和第二单向阀20仍然固定在阀盖9上,不会受到泵盖8拆卸的影响。
本发明实施例的隔膜泵520,增加了独立于泵盖8设置的阀盖9,将两个单向阀(第一单向阀10和第二单向阀20)集成到阀盖9上,并通过阀盖9与泵体1的可拆卸连接,将两个单向阀集成到泵体1上,两个单向阀不会受到泵盖8和隔膜片3被拆下的影响,避免了单向阀丢失的风险;此外,通过阀盖9固定两个单向阀,无需单独为每个单向阀设计阀座,减少了零件数量,节约了制造和安装成本。
本实施例的第一单向阀10包括第一阀芯101和第一弹性件102,第一阀芯101和第一弹性件102相配合,第一阀芯101固定在泵体1上,第一弹性件102固定在阀盖9上。具体的,第一阀芯101一端与第一弹性件102固定连接,另一端与泵体1固定连接,第一弹性件102远离第一阀芯101的一端与阀盖9固定连接。
第一阀芯101和泵体1的固定方式可根据需要设定,第一阀芯101可直接固定在泵体1上,也可间接固定在泵体1上。在其中一实施例中,第一阀芯101可通过阀座间接固定在泵体1上。在另一实施例中。参见图9,泵体1设有第一凹槽(未标出),第一阀芯101插接在第一凹槽中。
第一弹性件102和阀盖9的固定方式也可根据需要设定,又参见图9,阀盖9 设有第一凸起92,第一弹性件102套设固定在第一凸起92上。可选的,第一凹槽和第一凸起92相对而设,使得结构更加紧凑。在本实施例中,第一弹性件102为弹簧,其一端套设在固定在第一凸起92上,另一端套设固定在第一阀芯101上。可以理解的是,第一弹性件102也可以为其他弹性结构,第一弹性件102和阀盖9之间的固定方式也不限于上述实现方式。
本实施例的第二单向阀20包括第二阀芯201和第二弹性件202,第二阀芯201与第二弹性件202相配合,第二阀芯201固定在阀盖9上,第二弹性件202固定在泵体1上。具体的,第二阀芯201一端与第二弹性件202固定连接,另一端与阀盖9固定连接,第二弹性件202远离第二阀芯201的一端与泵体1固定连接。
第二阀芯201和阀盖9的固定方式可根据需要设定,第二阀芯201可直接固定在阀盖9上,也可间接固定在阀盖9上。在其中一实施例中,第二阀芯201可通过阀座间接固定在阀盖9上,在另一实施例中,参见图9,阀盖9设有第二凹槽(未标出),第二阀芯201插接在第二凹槽中。
第二弹性件202和泵体1的固定方式也可根据设定,又参见图9,泵体1设有第二凸起15,第二弹性件202套设固定在第二凸起15中。可选的,第二凹槽和第二凸起15相对而设,使得结构更加紧凑。在本实施例中,第二弹性件202为弹簧,其一端套设在固定在第二凸起15上,另一端套设固定在第二阀芯201上。可以理解的是,第一弹性件102也可以为其他弹性结构,第二弹性件202和泵体1之间的固定方式也不限于上述实现方式。
在本实施例中,第一凸起92和第二凹槽间隔设于阀盖9上,可选的,阀盖9具有一容纳槽,第一凸起92和第二凹槽均收纳在该收纳槽中,阀盖9的设计更加合理、紧凑。
阀盖9与泵体1之间可采用现有任意可拆卸连接方式固定连接,本实施例中,参见图8,阀盖9设有第一固定连接部件91,泵体1对应第一固定连接部件91设有第二固定连接部件16。第一固定连接部件91与第二固定连接部件16相配合,以使阀盖9可拆卸连接在泵体1上。可选的,第一固定连接部件91为插接凸起,第二固定连接部件16为插接孔,插接凸起与插接孔插接连接,将阀盖9可拆卸连接在泵体1上。可选的,第一固定连接部件91与第二固定连接部件16卡接配合。
为使得产品结构更加紧凑,本实施例的阀盖9设于泵体1和泵盖8之间。在一实施例中,泵盖8与泵体1可拆卸连接,而与阀盖9相分离或者与阀盖9接触但并未连接,隔膜片3损坏后,可将泵盖8从泵体1上拆卸下来,方便隔膜片3的维修与更换,并且泵盖8拆卸后,第一单向阀10和第二单向阀20仍然通过阀盖9固定在泵体1,可见泵盖8的拆卸与否并不会对第一单向阀10和第二单向阀20造成影响。泵盖8与泵体1之间的连接方式可选择现有任意可拆卸连接方式,如螺纹连接、卡接连接等。
在另一实施例中,泵盖8与泵体1、阀盖9分别可拆卸连接的。隔膜片3损坏后,可将泵盖8从泵体1和阀盖9上拆卸下来,方便隔膜片3的维修与更换,并且泵盖8拆卸后,第一单向阀10和第二单向阀20仍然通过阀盖9固定在泵体1,可见泵盖8的拆卸与否并不会对第一单向阀10和第二单向阀20造成影响。泵盖8与泵体1、阀盖9之间的连接方式可选择现有任意可拆卸连接方式,如螺纹连接、卡接连接等。
在双隔膜泵中,第一单向阀10包括用于控制第一进液口启闭的第一进液单向阀以及用于控制第二进液口启闭的第二进液单向阀,第二单向阀20包括用于控制第一出液口启闭的第一出液单向阀以及用于控制第二出液口启闭的第二出液单向阀。阀盖9包括第一阀盖9和第二阀盖9,第一进液单向阀与第一出液单向阀固定在第一阀盖9上,并且第一进液单向阀与第一出液单向阀通过第一阀盖9可拆卸固定在泵体1上。第二进液单向阀和第二出液单向阀固定在第二阀盖9上,并且第二进液单向阀和第二出液单向阀通过第二阀盖9可拆卸固定在泵体1上。具体的,第一阀盖9可拆卸连接在泵体1朝向第一泵盖的一侧,以将第一进液单向阀与第一出液单向阀固定在泵体1上。第二阀盖9可拆卸连接在泵体1朝向第二泵盖的一侧,以将第二进液单向阀和第二出液单向阀固定在泵体1上。
本实施例的,第一进液单向阀与第二进液单向阀相对而设,第一出液单向阀与第二出液单向阀相对而设,使得双隔膜泵的结构更加紧凑,有利于双隔膜泵的小型化设计。
进一步的,结合图10至图12,该隔膜泵520还可包括泄压装置2,泵体1设有泄压口13,进液口11通过流道与出液口12连通,泄压口13与流道相连通。泄压装置2设置在泄压口13,在本实施例中,泄压装置2包括阀门21以及弹性复位件22。阀门21对应泄压口13设置,并且,阀门21用于密封泄压口13。弹性复位件22与阀门21连接,本实施例的弹性复位件22用于提供一弹性回复力给阀门21。在弹性复位件22的弹性回复力作用下,能够促使阀门21将泄压口13密封。当泵体1内的液压超过预设压力阈值时,阀门21在农药的顶持力作用下与泄压口13相分离,农药由泄压口13流出,降低了泵体1内的液压大小。
当隔膜泵520正常工作时,农药由进液口11进入泵体1内的流道,再通过出液口12泵取至喷头400,由喷头400将农药喷出。当喷头400被堵塞时,出液口12与喷头400之间的通路被截断,农药无法从出液口12流至喷头400,而农药还是一直由进液口11进入泵体1内的流道,导致泵体1内的液压增大。泵体1内的液压超过预设压力阈值时,农药顶持阀门21,当农药的顶持力大于弹性复位件22施加在阀门21上的弹性回复力的大小时,阀门21与泄压口13相分离,农药由进液口11进入泵体1内的流道,再由泄压口13流出,实现隔膜泵520的超压保护。
本实施例中,预设压力阈值、顶持力均与弹性回复力正相关,即弹性回复力越 大,预设压力阈值和顶持力越大。
本发明实施例中,通过在泵体1上设置泄压口13,并增加与泄压口13配合泄压装置2,当泵体1内的液压过高时,泄压装置2与泄压口13相分离,泵体1内的液体通过泄压口13流出,实现隔膜泵520的超压保护,相比于成本高昂的电子压力计550,泄压装置2与泄压口13配合的方式具有成本低廉、响应更加及时、稳定性更高等优势;并且,泄压口13流出的液体经进液口11再次进入泵体1内,避免了液体外泄造成的资源浪费、环境污染等问题。
本实施例的泵体1还可包括回液口14,回液口14与流道连通,泄压口13通过回流通道与回液口14连通。泄压口13流出的农药可由回液口14再次进入泵体1内的流道,避免了液体外泄造成的资源浪费、环境污染等问题。
参见图12,阀门21朝向泄压口13的一侧设有锥阀,锥阀插接在泄压口13中。当隔膜泵520正常工作时,通过锥阀与泄压口13的配合,将阀门21固定在泄压口13中。当喷头400被堵塞,泵体1内的液压超过预设压力阈值时,泵体1内的农药顶持锥阀,当农药的顶持力克服弹性回复力时,阀门21被顶开而与泄压口13相分离。
为更好的实现超压保护,本实施例的阀门21为柔性材质制作,如橡胶、塑胶等。采用柔性的阀门21,当泵体1内的液压超过预设压力阈值时,泵体1内的农药能够比较容易地顶开阀门21,实现泄压保护功能。
在本实施例中,弹性复位件22连接在阀门21背对泄压口13的表面。可选的,弹性复位件22一体成型在阀门21上。可选的,阀门21背对泄压口13的表面设有固定端,弹性复位件22与该固定端固定连接。弹性复位件22与固定端的连接方式可选择现有任意类型的连接方式,例如,弹性复位件22可与该固定端套设配合。
为使得弹性复位件22施加不同大小的弹性回复力给阀门21,结合图11和图12,本实施例的泄压装置2还包括盖体23,该盖体23固定连接在泵体1上,弹性复位件22与盖体23可移动连接。当弹性复位件22相对于盖体23移动至不同的位置时,弹性复位件22能够施加不同大小的弹性回复力给阀门21,阀门21能够在弹性复位件22施加的弹性回复力作用下对泄压口13进行密封。通过调节弹性复位件22施加给阀门21的弹性回复力大小,从而调节预设压力阈值的大小,满足不同的压力保护需求。
本实施例的盖体23盖设于泄压口13,盖体23和泵体1包围形成一收容空间,阀门21收容在收容空间内,并且阀门21与盖体23的内侧壁固定连接,通过收容空间收容阀门21,避免了在泄压时,阀门21与泄压口13相分离而丢失。
盖体23与泵体1的固定连接方式可采用现有任意固定连接方式,本实施例中,参见图11,盖体23与泵体1通过固定件27(如螺栓)固定连接。
本实施例中,盖体23具有第一开口部,弹性复位件22能够与第一开口部直接 或间接配合,以施加不同大小的弹性回复力给阀门21。本实施例的弹性复位件22连接在阀门21背对泄压口13的一侧,第一开口部位于阀门21背对泄压口13的一侧预设距离处。第一开口部可以为圆孔,也可以为其他形状的孔,本实施例以第一开口部为圆孔为例进行说明。
弹性复位件22施加不同大小的弹性回复力给阀门21可基于不同的结构来实现,例如,在其中一实现方式中,弹性复位件22可移动插接在第一开口部中。弹性复位件22在第一开口部中相对于第一开口部移动至不同的位置时,弹性复位件22能够施加不同大小的弹性回复力给阀门21。可选的,弹性复位件22挤压在第一开口部中。通过按压弹性复位件22远离阀门21的一端,使得弹性复位件22被逐渐压缩,弹性复位件22施加给阀门21的弹性回复力会越来越大,农药顶开阀门21所需要的顶持力大小也越来越大。通过拉拔弹性复位件22远离阀门21的一端,使得弹性复位件22被逐渐拉伸但阀门21并未与泄压口13分离,农药顶开阀门21所需要的顶持力大小也越来越小。为满足不同隔膜泵520对超压保护的需求(不同隔膜泵520可承受的最大液压大小不同),可根据需要来移动弹性复位件22在第一开口部中的位置。本实现方式中,弹性复位件22由柔性材质制作,如橡胶、塑胶等柔性材质。
在另一实现方式中,又结合图11和图12,泄压装置2还包括调节件24,调节件24与弹性复位件22配合,以调节弹性回复力的大小,使得弹性复位件22能够施加不同大小的弹性回复力给阀门21。在本实现方式中,弹性复位件22的一端连接阀门21,另一端连接调节件24,调节件24可转动地插接在第一开口部中。当调节件24在第一开口部中相对于第一开口部转动时,调节件24能够带动弹性复位件22的伸缩,以调节弹性回复力的大小。具体的,当调节件24在第一开口部中沿第一方向转动时,调节件24朝向阀门21移动,使得弹性复位件22逐渐被压缩,弹性复位件22施加给阀门21的弹性回复力会越来越大,农药顶开阀门21所需要的顶持力大小也越来越大。当调节件24在第一开口5111中沿第二方向转动时,调节件24远离阀门21移动,使得弹性复位件22逐渐被拉伸但阀门21并未与泄压口13分离,弹性复位件22施加给阀门21的弹性回复力会越来越小,农药顶开阀门21所需要的顶持力大小也越来越小。第一方向与第二方向不相同,可选的,第一方向为顺时针方向,第二方向为逆时针方向。为满足不同隔膜泵520对超压保护的需求(不同隔膜泵520可承受的最大液压大小不同),可根据需要来转动调节件24。
其中,弹性复位件22的类型可根据需要选择,可选的,弹性复位件22可由柔性材质制作,如橡胶、塑胶等柔性材质;可选的,弹性复位件22为弹簧。调节件24的类型也可根据需要选择,可选的,调节件24为螺纹件,如螺丝,螺纹件与第一开口部通过螺纹转动连接。在本实现方式中,弹性复位件22为弹簧,调节件24为螺丝。弹簧一端套设在固定端上,另一端套设在螺丝上。
此外,为方便用户调节弹性复位件22的伸缩,调节件24的一部分穿设第一开 口部而暴露在第一开口部外,供用户调节。
进一步结合图11和图12,本实施例的泄压装置2还可包括行程开关25,弹性复位件22与阀门21的一端相抵接,行程开关25与阀门21的另外一端相抵接,从而使得泄压装置2的结构分布更加合理、紧凑。本实施例中,弹性复位件22与行程开关25均与阀门21背对泄压口13的表面相抵接。当喷头400被堵塞,泵体1内的液压超过预设压力阈值时,泵体1内的农药顶开阀门21,使得阀门21与泄压口13相分离,阀门21推动行程开关25移动,行程开关25能够及时检测到阀门21的移动量,从而将超压信号传递至后端(控制中心)。
本实施例的盖体23具有第二开口部,行程开关25插接在第二开口部中,通过第二开口部固定行程开关25,防止行程开关25丢失。在本实施例中,行程开关25是可移动插接在第二开口部中的。
更进一步的,结合图11和图12,本实施例的泄压装置2还可包括辅助件26,该辅助件26设于阀门21背对泄压口13的表面,行程开关25以及弹性复位件22通过辅助件26与阀门21抵接。通过设置辅助件26,使得柔性的阀门21能够更好的密封泄压口13,并在阀门21与泄压口13相分离时,将阀门21的移动及时传递给行程开关25。
本实施例的辅助件26上设有第三开口部。弹性复位件22可采用不同的方式通过辅助件26与阀门21抵接,例如,在一些实施例中,弹性复位件22可穿设第三开口部与阀门21相连接。在另一些实施例中,阀门21的一部分(固定端)穿设第三开口部与弹性复位件22相连接。
行程开关25也可采用不同的方式通过辅助件26与阀门21抵接,可选的,辅助件26与阀门21背对泄压口13的表面固定连接,例如,辅助件26与阀门21背对泄压口13的表面采用粘接、卡接或其他方式固定连接。可选的,辅助件26收容在盖体23与泵体1包围形成的收容空间内,并且辅助件26与盖体23的内侧壁可移动连接。
本实施例的辅助件26为刚性件,如不锈钢制件。可选的,辅助件26为刚性片状结构,刚性片状结构的辅助件26在不给泄压装置2增加太大的重量情况下,不仅能够使得柔性的阀门21能够更好的密封泄压口13,还能在阀门21与泄压口13相分离时,将阀门21的移动及时传递给行程开关25。
本实施例的驱动机构4包括电机,更进一步的,结合图13至图17,该电机可包括电机主体41、电机座42、电机轴43(即主轴)、保护盖44、静密封件45和动密封件46。其中,电机主体41包括电机转子411和电机定子412。电机座42设有泵体安装面421、电机安装面422以及安装孔423,泵体安装面421用于安装隔膜泵520的泵体1,电机安装面422用于安装电机主体41。本实施例的泵体安装面421以及电机安装面422分别位于电机座42的相对两侧,即泵体安装面421和电机安装面422 相对而设。进一步的,安装孔423贯穿电机安装面422以及泵体安装面421。本实施例的电机轴43安装在安装孔423中,其中,电机轴43包括连接端和动力输出端,连接端自安装孔423的一端伸出,动力输出端自安装孔423的另一端伸出,连接端用于与电机主体41固定连接,动力输出端用于输出动力,驱动隔膜泵520的隔膜片3往复运动。
本实施例中,电机转子411与电机轴43固定连接,电机转子411用于驱动电机轴43转动。可选的,电机转子411转动,电机轴43同步转动;可选的,电机轴43和电子转子非同步转动。进一步的,电机定子412用于与电机转子411相配合。电子定子、电机转子411和电机轴43之间的配合方式为现有技术,此处不具体进行说明。
在本实施例中,保护盖44可拆卸连在电机安装面422上,并且保护盖44与电机座42共同形成容置腔,电机轴43的连接端、电机转子411以及电机定子412均收容在容置腔内,通过容置腔对电机转子411以及电机定子412等部件进行密封,而实现对电机转子411和电机定子412等部件的保护。本实施例的静密封件45设于保护盖44与电机座42的连接处,通过静密封件45实现保护盖44与电机座42之间的静密封,防止液体从保护盖44与电机座42连接处的缝隙进入容置腔。动密封件46收容在安装孔423中,并且动密封件46的一端与电机轴43靠近动力输出端的外圆周面抵接,另一端与安装孔423的内侧壁抵接,通过动密封件46实现电机轴43靠近动力输出端的外圆周面与安装孔423的侧壁之间的动密封,防止液体从电机轴43靠近动力输出端的外圆周面与安装孔423的侧壁之间的缝隙进入容置腔。
本发明实施例中,通过在保护盖44和电机座42的连接处设置静密封件45,并通过在电机轴43和安装孔423的连接处设置动密封件46,采用动、静密封相结合的方式实现电机与外界的隔离,杜绝液体从保护盖44和电机座42的连接处、电机轴43和安装孔423的连接处进入电机内部,有效保护电机,提高电机的使用寿命。
保护盖44与电机安装面422可采用卡接、螺丝连接、扣接等可拆卸连接方式配合,在本实施例中,电机安装面422上设有第一固定连接件,保护盖44对应第一固定连接件设有第二固定连接件。第一固定连接件与第二固定连接件相配合,以使保护盖44可拆卸连在电机安装面422上。可选的,第一固定连接件为螺纹孔,第二固定连接件为螺丝。
静密封件45可以为密封圈,也可以为其他的能够实现静密封的结构。本实施例中,静密封件45为密封圈。可选的,电机座42在电机安装面422设有安装凸缘,密封圈套设固定在电机座42的安装凸缘上,保护盖44套设固定在电机座42的安装凸缘上,并且与密封圈抵接,通过设置密封圈,实现了保护盖44和安装凸缘的密封连接。本实施例的密封圈可以为橡胶密封圈,也可以为其他柔性密封圈。
动密封件46可以为密封骨架,也可以为其他能够实现动密封的结构。在本实 施例中,动密封件46为密封骨架,并且密封骨架呈环形,环形的密封骨架套设在电机轴43上,通过设置环形的密封骨架,实现电机轴43靠近动力输出端的外圆周面和安装孔423的内侧壁密封连接。
密封骨架的具体结构可根据需要设计,在本实施例中,为了减轻密封骨架的重量,以减小密封骨架对电机的负重影响,参见图15,密封骨架朝向电机轴43的一侧设有第一凹陷部461以及分别设于第一凹陷部461两侧的第一抵接部462和第二抵接部463,第一抵接部462和第二抵接部463沿着电机轴43的轴向分布。当密封骨架套设在电机轴43上时,第一抵接部462和第二抵接部463均与电机轴43的外圆周面抵接。通过设置第一凹陷部461,减轻了密封骨架的重量;并且,通过位于第一凹陷部461两侧第一抵接部462和第二抵接部463,实现了密封骨架与电机轴43的外周面不同位置处的连接,确保了密封骨架与电机轴43的外周面之间的密封连接。
进一步的,为了实现密封骨架与安装孔423的内侧壁之间的紧密连接,又参见图15,密封骨架远离电机轴43的一侧设有第三抵接部464,安装孔423的内侧壁设有一台阶部,第三抵接部464与台阶部抵接,通过第三抵接部464与台阶部的抵接配合,实现密封骨架与安装孔423的内侧壁之间的密封连接。
更进一步的,为了进一步减轻密封骨架的重量,以减小密封骨架对电机的负重影响,还参见图15,第三抵接部464与第一抵接部462和/或第三抵接部464与第一凹陷部461之间设有第二凹陷部465。可选的,第二凹陷部465的凹陷方向朝向动力输出端。
此外,结合图13、图14以及图16和图17,本实施例的电机还可包括第一轴承47,该第一轴承47套设固定在动力输出端上。第一轴承47可直接连接隔膜片3或者通过传动机构6与隔膜片3连接,将动力输出端输出的动力直接或间接传递给隔膜片3,驱动隔膜片3往复运动。本实施例的第一轴承47露出电机外,可选的,第一轴承47为防水轴承,有利于第一轴承47的防水保护。
参见图14,本实施例的电机轴43通过第二轴承410可转动地插接安装孔423中,第二轴承410位于安装孔423内并靠近动力输出端设置,动密封件46靠近第二轴承410设置。
本实施例中,电机转子411套设于电机轴43上,电机转子411转动,带动电机轴43转动。可选的,电机转子411与电机轴43一体成型设置,电机转子411转动,带动电机轴43同步转动。可选的,电机转子411与电机轴43为独立部件,电机转子411固定套设于电机轴43上,电机轴43可跟随电机转子411同步转动或非同步转动。
进一步的,参见图14,电机定子412可转动地套设在电机轴43上,并且位于电机转子411内,电机工作时,电机定子412保持静止状态。可选的,电机定子412通过第三轴承420可转动地套设在电机轴43上。
本实施例的电机转子411包括转子线圈,电机定子412包括定子线圈,转子线圈和定子线圈配合,使得电机转子411转动。
又结合图13、图14以及图16和图17,本实施例的电机还可包括电接口413和电插头48。其中,电接口413设于电机座42上,并且电接口413与转子线圈、定子线圈分别电连接。本实施例的电插头48与电接口413可拆卸电连接,通过电插头48连接外部电源,对电机进行供电,转子线圈和定子线圈上电配合,电机转子411转动。
本实施例的电机还可包括电路板414,用于控制电机工作和/或检测电机工作参数。电接口413通过电路板414与转子线圈、定子线圈分别电连接,电路板414收容在容置腔内,并且该电路板414套设于电机轴43上。可选的,电路板414位于动密封件46和电机定子412之间。
进一步的,本实施例的电机还可包括密封结构49,该密封结构49设于电接口413的内侧壁。当电插头48插接在电接口413中,密封结构49套设于电插头48上。本实施例的密封结构49为柔性密封圈,如橡胶密封圈,通过密封结构49实现电接口413和电插头48的连接处的静密封,防止液体从电接口413和电插头48连接处的缝隙进入容置腔。
密封结构49与电接口413的固定连接方式可选择现有任意类型的连接方式,可选的,密封结构49的外侧壁设有凸起,电接口413的对应位置设有凹槽,凸起与凹槽配合。
为了进一步固定电插头48固定,在一实施例中,电机座42邻近电接口413设有第三固定连接件,电插头48对应第三固定连接件设有第四固定连接件,第三固定连接件与第四固定连接件相配合,以使电插头48与电接口413可拆卸连接。可选的,第三固定连接件为螺纹孔,第四固定连接件为螺丝。
采用本实施例的动密封件46、静密封件45以及密封结构49后,电机的防水等级可达到IP68,能杜绝液体进入电机内部,有效保护电机,提高电机的使用寿命。
可选的,泄压口13和电机分别设于泵体1的相对两侧(或者泵体1上其他不同的两侧),防止泄压口13流出的农药进入电机。
上述实施例的隔膜泵520可应用在机载喷洒系统500上,该机载喷洒系统500可搭载在农业植保机上,如植保无人机、农药喷洒车或人力喷洒装置。
结合图18至图20,本发明实施例一还提供一种机载喷洒系统500,该机载喷洒系统500可包括固定架510、隔膜泵520和连接件530。其中,固定架510设有多个开口511,每个开口511包括第一开口5111和与第一开口5111相连通的第二开口5112,第一开口5111的口径大于第二开口5112的口径。隔膜泵520和连接件530也包括多 个,可选地,开口511、隔膜泵520和连接件530呈一一对应的关系,多个连接件530用于将多个隔膜泵520固定在对应的开口511中。
在本实施例中,每个连接件530具有连接主体531和止挡部532。连接主体531与对应的隔膜泵520固定连接,止挡部532设于连接主体531上。本实施例的止挡部532的尺寸大于第二开口5112的口径而小于等于第一开口5111的口径,使得止挡部能够穿过第一开口5111,但不能穿过第二开口。当连接件530与开口511配合时,止挡部能够穿过第一开口5111,并且,连接主体531能够从第一开口5111滑动至第二开口5112内,致使止挡部532被第二开口5112的周缘阻挡,从而将对应的隔膜泵520固定在固定架510上。需要说明的是,本发明实施例中,止挡部532的尺寸是指止挡部532在与止挡部532穿设第一开口5111方向相垂直的方向上的尺寸。
具体的,隔膜泵520的安装过程包括:先将连接件530的连接主体531远离止挡部532的一端与隔膜泵520固定连接,接着将止挡部532穿设第一开口5111,将连接主体531从第一开口5111滑动至第二开口5112内,止挡部532被第二开口5112的周缘阻挡,从而将对应的隔膜泵520固定在固定架510上。
隔膜泵520的拆卸过程包括:将连接件530的连接主体531从第二开口5112滑动至第一开口5111内,此时止挡部532能够朝向对应的隔膜泵520方向从第一开口5111中脱出,使得连接件530与开口511分离,从而将对应的隔膜泵520从固定架510上拆卸下来。
本发明实施例中,通过在固定架510上设置口径大小不同的、相互连通的第一开口5111和第二开口5112,在将隔膜泵520安装至固定架510时,将连接件530穿设第一开口5111并滑动至第二开口5112内即可,在将隔膜泵520从固定架510拆卸下来时,将连接件530从第二开口5112滑动至第一开口5111,再将连接件530从第一开口5111中脱出即可,通过结构简单、成本低的连接件530与开口511配合,实现了隔膜泵520的快速安装与拆卸,隔膜泵520安装与拆卸的过程简单、操作步骤少、易于实现,为多个隔膜泵520的集成化节省时间,并且便于后期在隔膜泵520损坏时对隔膜泵520进行维修或更换。
其中,固定架510可以包括一固定板。可选的,该固定板为碳板。可以理解的是,机载喷洒系统500中的隔膜泵520也可以替换成其他类型泵。
本实施例中,参见图18,多个开口511呈一排间隔设置在固定架510上,开口511的这种排布方式,使得多个隔膜泵520呈一排固定在固定架510上,即使在使用时,由于其中一个隔膜泵520损坏而漏液,泄漏的液体(可以为水,也可以为药液)也不会进入其它隔膜泵520,有利于保护隔膜泵520。当然,多个开口511的排布方式并不限于此,还可选择其他排布方式,例如多个开口511呈上下两排设置,每排包括一个或多个间隔设置隔膜泵520,可选的,上下两排开口511中相邻开口511错开设 置,减少上排开口511所固定的隔膜泵520因损坏漏液对下排开口511所固定的隔膜泵520的影响。
本发明实施例中,以一排间隔设置的开口511的设置方向称为第一方向。
结合图18和图19,第一开口5111位于第二开口5112的上方,连接主体531能够比较容易的从第一开口5111滑入第二开口5112。可选的,第一开口5111位于第二开口5112的正上方,第一开口5111的中心与第二开口5112的中心连线与第一方向相垂直。可选的,第二开口5112偏置设于第一开口5111的一侧,且位于第一开口5111的下方,第一开口5111的中心与第二开口5112的中心连线相对第一方向倾斜。当然,在其他实施例中,第一开口5111与第二开口5112也可沿着第一方向排布,第一开口5111的中心与第二开口5112的中心连线平行于第一方向。
此外,第一开口5111、第二开口5112的形状可根据需要设定。例如,在其中一实施例中,第一开口5111为圆孔,第二开口5112为非圆孔(如方孔)。在另一实施例中,第一开口5111为非圆孔(如方孔),第二开口5112为圆孔。在又一实施例中,第一开口5111和第二开口5112均为圆孔。
本实施例的多个连接件530可相互独立设置,也可为一整体结构。在其中一实施例中,多个连接件530相互独立设置,每个连接件530将对应的隔膜泵520固定在对应的开口511中,每个隔膜泵520可相对固定架510独立安装与拆卸,便于后期的维修。可选的,每个连接件530的连接主体531远离止挡部532的一端一体成型于隔膜泵520的壳体上。可选的,每个连接件530的连接主体531远离止挡部532的一端可拆卸连接在隔膜泵520的壳体上,例如,通过螺纹连接、卡接等方式可拆卸连接在隔膜泵520的壳体上。
在另一实施例中,参见图21,多个连接件530通过一连接支架533连接形成一整体结构。本实施例中,连接支架533与多个隔膜泵520固定连接。可选的,连接支架533可拆卸连接每个隔膜泵520,例如,通过螺纹连接、卡接等方式可拆卸连接在隔膜泵520的壳体上,这样,隔膜泵520可单独从连接支架533上拆卸下来,便于后期对出现故障的隔膜泵520的拆卸维修。
本实施例中,连接主体531与第二开口5112过盈配合,连接主体531挤压在第二开口5112中,隔膜泵520能够通过连接件530被较为牢固地固定在第二开口5112上,避免了机载喷洒系统500在作业过程中,由于隔膜泵520与第二开口5112连接不稳定导致隔膜泵520晃动的问题发生。
当然,在其他实施例中,连接主体531与第二开口5112也可间隙配合,便于连接主体531在第一开口5111和第二开口5112之间切换,从而方便隔膜泵520的安装与拆卸。此时,为了解决隔膜泵520在通过连接件530安装至第二开口5112中后存在的晃动问题,可在第二开口5112的周缘设置固定部,固定部与止挡部532配合,从 而将隔膜泵520稳定地固定在第二开口5112上。固定部与止挡部532可通过卡接、插接方式相配合。
本实施例中,止挡部532被第二开口5112的周缘阻挡的部分的面积大于预设面积阈值,进一步将将隔膜泵520稳定地固定在第二开口5112上。
此外,在一实施例中,止挡部532的尺寸与第一开口5111的口径大小相等。可采用较大的力度拉拔或者按压止挡部532,使得第一开口5111的内缘挤压止挡部532,使得止挡部532变形而穿设第一开口5111。在另一实施例中,止挡部532的尺寸小于第一开口5111的口径,止挡部532能够较为容易地穿设第一开口5111,从而方便隔膜泵520的安装与拆卸。
本实施例的连接件530可为柔性材质,如橡胶、塑胶,从而减缓作业过程中或运输过程中隔膜泵520的震动。
在本实施例中,每个隔膜泵520包括进水口。可选的,多个隔膜泵520的进水口朝向相同。可选的,多个隔膜泵520的进水口朝向各不相同或部分不相同。
相关技术中,机载喷洒系统500的多个隔膜泵520共用同一总进水口,进入每个隔膜泵520进水口的液体流量可能存在波动,导致引发多个隔膜泵520之间的流量窜动问题(由进入每个隔膜泵520的液体流量不相同导致),这会导致机载喷洒系统500的喷洒压力不稳定。本实施例中,为了减缓多个隔膜泵520之间的流量窜动,又参见图18,隔膜泵520还包括可分水器540,每个隔膜泵520的进水口均与分水器540连通,为方便将分水器540与各个隔膜泵520的进水口相连接,本实施例的多个隔膜泵520的进水口朝向相同。并且,多个隔膜泵520的进水口通过分水器540相互连通。分水器540将储液箱200内的液体引出,再经多个隔膜泵520泵出。通过设置分水器540,解决了多个隔膜泵520之间的流量窜动问题,并简化了总进水口结构。
进一步的,参见图22,分水器540靠近每个进水口处均设有一个副水箱541,副水箱541与对应的进水口连通,分水器540内的液体经副水箱541和对应的进水口进入对应的隔膜泵520内,进一步减缓多个隔膜泵520之间的流量窜动,保证了机载喷洒系统500的喷洒压力的稳定性。
可选的,副水箱541为柔性材质,如橡胶、塑胶,柔性材质的副水箱541能够形变吸收进水口因液体流量不稳定而导致的脉动压力,确保机载喷洒系统500的喷洒压力的稳定性。
此外,本实施例的每个隔膜泵520还可包括出水口。可选的,多个隔膜泵520的出水口朝向相同,并且与进水口的朝向相反。可选的,多个隔膜泵520的出水口的朝向各不相同或部分不相同。
本实施例中,隔膜泵520具有顶部和底部,以顶部作为“上”,底部作为“下” 作为参考对隔膜泵520的进水口和出水口进一步说明。本实施例的多个隔膜泵520的进水口均朝下,多个隔膜泵520的出水口均朝上,利于管道300的布局。
为了监控隔膜泵520的实时压力变化,一般会在隔膜泵520上安装压力检测装置。相关技术中,隔膜泵520使用内置式压力检测装置。然而,由于压力震动,压力检测装置极为容易损坏,需要定期维护或更换,而当内置式压力检测装置损坏时,拆卸和更换特别麻烦,导致内置式压力检测装置损坏后,需要报废整个隔膜泵520。
本实施例中,结合图18和图22,每个隔膜泵520上还可设有压力计550,用于检测隔膜泵520内的压力变化。该压力计550可拆卸地连接在对应的隔膜泵520上,本实施例的压力计550为外置式的且可拆卸的,压力计550装拆方便,无需将隔膜泵520拆下,也可单独更换压力计550。压力计550可通过螺纹或法兰可拆卸地连接在对应的隔膜泵520上。
压力计550连接在隔膜泵520上的位置可根据需要选择,在本实施例中,由于隔膜泵520的顶部需要布局管道300,故将压力计550设于对应的隔膜泵520的底部,方便压力计550的快速拆卸。
另外,每个隔膜泵520还包括驱动机构4,作为隔膜泵520的驱动源。驱动机构4的类型可根据需要选择,在本实施例中,驱动机构4包括电机,电机位于对应的隔膜泵520的顶部,避免隔膜泵520损坏而漏液后,泄漏的液体进入电机,达到保护电机的目的。可选的,电机直接设于隔膜泵520的顶部。可选的,电机设于隔膜泵520顶部一定距离处。本实施例的电机可与隔膜泵520的顶部直接或间接固定连接。可以理解的是,也可将电机替换成其他驱动装置。
又结合图18和图22,机载喷洒系统500还可包括安装支架560,该安装支架560用于与外部设备固定连接,并且安装支架560与固定架510固定连接。在将机载喷洒系统500装设在外部设备上时,安装支架560与外部设备固定连接,从而将机载喷洒系统500固定在外部设备上。
可选的,安装支架560与固定架510可拆卸固定连接,安装支架560与固定架510可拆卸固定方式可选择现有任意固定方式,例如,安装支架560与固定架510基于螺纹、快拆件或焊接等方式实现可拆卸连接。可选的,安装支架560与固定架510一体成型。
安装支架560可包括一个或多个,例如,在一实施例中,安装支架560包括多个,多个安装支架560间隔设置在固定架510上。在将机载喷洒系统500装设在外部设备上时,多个安装支架560分别与外部设备固定连接,从而将机载喷洒系统500稳定地固定在外部设备上。
本实施例中,外部设备为农业植保机,如植保无人机、农药喷洒车、人力喷洒装置等,将本实施例的机载喷洒系统500应用在农业植保机上,以满足植保领域的大 流量喷洒和独立控制多喷头400的需求。以植保无人机为例,可将安装支架560安装在植保无人机的机架100上,从而将机载喷洒系统500安装在机架100上。
实施例二
参见图23,本发明实施例二提供一种农业植保机,包括机架100、用于存储药液的储液箱200、与储液箱200相连通的管道300、多个喷头400以及隔膜泵。其中,隔膜泵能够从储液箱200泵取农药至喷头400,由喷头400将药液喷出,将农药喷洒至农作物上。
本实施例的农业植保机可以为植保无人机,也可以为农药喷洒车或人力喷洒装置。
可选的,隔膜泵为上述实施例一的隔膜泵520。在本实施例中,隔膜泵520的进液口11通过管道300与储液箱200连通,出液口12通过管道300与喷头400连通。隔膜泵520从储液箱200泵取农药至喷头400,由喷头400将药液喷出,将农药喷洒至农作物上。
本实施例中,隔膜泵520固定连接在机架100上。以植保无人机为例,机架100包括机身110和与机身110底部相连的脚架120,隔膜泵520的泵体1或泵盖8装设在脚架120上,泵体1或泵盖8与脚架120底部的固定连接方式可选择现有任意固定方式,例如,螺纹、卡接等。
又参见图23,机架100还可包括与机身110连接的机臂130,喷头400设于机臂130远离机身110的一端。
可选的,隔膜泵为上述实施例一的机载喷洒系统500。
在本实施例中,机载喷洒系统500的多个隔膜泵520通过管道300连接于储液箱200和对应的喷头400之间,隔膜泵520用于将储液箱200的药液泵取至对应的喷头400,由喷头400将药液喷出,将农药喷洒至农作物上。
本实施例机载喷洒系统500的分水器540包括入口和多个出口,分水器540的入口与储液箱200连通。可选的,分水器540的入口直接或通过管道300与储液箱200连通。每个隔膜泵520的进水口通过分水器540的一个出口与分水器540连通,可选的,每个隔膜泵520的进水口与对应的出口直接或通过管道300连通。进一步的,每个隔膜泵520的出水口经管道300与对应的喷头400连通。储液箱200内的药液经分水器540的入口进入分水器540内,分水器540将药液均匀分配至各个隔膜泵520,由多个隔膜泵520将药液泵取至对应的喷头400,再由喷头400将药液喷出,对农作物进行药液喷洒。
本实施例中,机载喷洒系统500的安装支架560与机架100固定连接。以植保无人机为例,机架100包括机身110和与机身110底部相连的脚架120,安装支架560 与机身110底部固定连接。安装支架560与机身110底部的固定连接方式可选择现有任意固定方式,例如,螺纹、卡接等。又参见图23,机架100还可包括与机身110连接的机臂130,喷头400设于机臂130远离机身110的一端。
需要说明的是,在本文中,诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区开来分,而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下,由语句“包括一个……”限定的要素,并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。以上对本发明实施例所提供的农业植保机的隔膜泵520及农业植保机进行了详细介绍,本文中应用了具体个例对本发明的原理及实施方式进行了阐述,以上实施例的
说明只是用于帮助理解本发明的方法及其核心思想;同时,对于本领域的一般技术人员,依据本发明的思想,在具体实施方式及应用范围上均会有改变之处,综上所述,本说明书内容不应理解为对本发明的限制。

Claims (30)

  1. 一种农业植保机的隔膜泵,其特征在于,所述隔膜泵包括:
    泵体;
    盖设在所述泵体上的泵盖;
    设于所述泵体内的隔膜片,所述隔膜片与所述泵盖相配合,以使所述隔膜片与所述泵盖包围形成腔体;
    与所述隔膜片相连的驱动机构;以及
    隔膜支撑,所述隔膜支撑的一端与所述隔膜片远离所述泵盖一侧抵接,另一端与驱动结构连接,所述隔膜支撑与所述隔膜片远离所述泵盖一侧的接触面积大于预设面积阈值;
    其中,所述驱动机构驱动所述隔膜片相对所述泵盖往复运动,使得所述腔体减小或增大。
  2. 根据权利要求1所述的隔膜泵,其特征在于,所述隔膜支撑与所述隔膜片远离所述泵盖一侧抵接通过弧面抵接。
  3. 根据权利要求2所述的隔膜泵,其特征在于,所述隔膜支撑的刚度大于预设刚度阈值。
  4. 根据权利要求1所述的隔膜泵,其特征在于,所述隔膜支撑覆盖所述隔膜片远离所述泵盖一侧。
  5. 根据权利要求1所述的隔膜泵,其特征在于,所述隔膜泵还包括传动机构,所述传动机构与所述驱动机构连接,所述驱动机构转动,带动所述传动机构推动所述隔膜片相对所述泵盖来回移动,以改变所述腔体的大小;
    所述驱动机构通过所述传动机构连接所述隔膜支撑。
  6. 根据权利要求5所述的隔膜泵,其特征在于,所述传动机构包括偏心转动件;
    所述驱动机构与所述偏心转动件连接,所述驱动机构转动,带动所述偏心转动件转动,所述偏心转动件推抵所述隔膜片移动。
  7. 根据权利要求6所述的隔膜泵,其特征在于,所述传动机构还包括支架以及设于所述支架上的连接部件,所述连接部件与所述隔膜片连接;
    所述偏心转动件转动插接在所述支架中,所述偏心转动件转动,带动所述支架和所述连接部件抵推所述隔膜片移动。
  8. 根据权利要求7所述的隔膜泵,其特征在于,所述隔膜支撑套设固定在所述连接部件上。
  9. 根据权利要求7所述的隔膜泵,其特征在于,所述支架设有插接槽,所述连接部件插接在所述插接槽中。
  10. 根据权利要求7所述的隔膜泵,其特征在于,所述偏心转动件和所述支架的连接处设有垫片。
  11. 根据权利要求7或10所述的隔膜泵,其特征在于,所述偏心转动件的一部分 与所述支架的内侧壁抵接。
  12. 根据权利要求6所述的隔膜泵,其特征在于,所述偏心转动件为偏心轮或偏心轴承。
  13. 根据权利要求5所述的隔膜泵,其特征在于,所述驱动机构包括电机,所述电机的主轴伸入所述泵体内并与所述传动机构连接。
  14. 根据权利要求1所述的隔膜泵,其特征在于,所述泵盖包括两个,所述隔膜片也包括两个,两个所述泵盖与两个所述隔膜片对应配合;
    其中,两个所述泵盖分别盖设在所述泵体两侧,两个所述隔膜片分别装配在对应的泵盖上,所述腔体包括两个所述隔膜片与对应的泵盖包围形成的第一腔体和第二腔体;
    所述驱动机构驱动两个所述隔膜片分别相对对应的泵盖靠近或远离,使得所述第一腔体和所述第二腔体的大小朝着相反的方向变化。
  15. 根据权利要求14所述的隔膜泵,其特征在于,所述农业植保机包括管道;
    所述隔膜泵还包括分别与所述第一腔体连通的第一进液口和第一出液口以及分别与所述第二腔体连通的第二进液口和第二出液口,所述第一进液口和所述第一出液口以及所述第二进液口和所述第二出液口分别设于对应的泵盖的同一侧,且所述第一进液口、第一出液口、第二进液口和第二出液口能够与所述管道相连通;
    当所述第一腔体缩小,所述第二腔体扩大时,所述第一出液口、第二进液口与所述管道连通,所述第一进液口、第二出液口关闭;当所述第一腔体扩大,所述第二腔体缩小时,所述第一进液口、第二出液口与所述管道连通,所述第一出液口、第二进液口关闭。
  16. 一种农业植保机,包括机架、用于存储药液的储液箱、与储液箱相连通的管道以及喷洒组件,其特征在于,还包括通过所述管道连接于储液箱和喷洒组件之间的隔膜泵,所述隔膜泵包括:
    泵体;
    盖设在所述泵体上的泵盖;
    设于所述泵体内的隔膜片,所述隔膜片与所述泵盖相配合,以使所述隔膜片与所述泵盖包围形成腔体;
    与所述隔膜片相连的驱动机构;以及
    隔膜支撑,所述隔膜支撑的一端与所述隔膜片远离所述泵盖一侧抵接,另一端与驱动结构连接,所述隔膜支撑与所述隔膜片远离所述泵盖一侧的接触面积大于预设面积阈值;
    其中,所述驱动机构驱动所述隔膜片相对所述泵盖往复运动,使得所述腔体减小或增大。
  17. 根据权利要求16所述的农业植保机,其特征在于,所述隔膜支撑与所述隔膜片远离所述泵盖一侧抵接通过弧面抵接。
  18. 根据权利要求17所述的农业植保机,其特征在于,所述隔膜支撑的刚度大于预设刚度阈值。
  19. 根据权利要求16所述的农业植保机,其特征在于,所述隔膜支撑覆盖所述隔膜片远离所述泵盖一侧。
  20. 根据权利要求16所述的农业植保机,其特征在于,所述隔膜泵还包括传动机构,所述传动机构与所述驱动机构连接,所述驱动机构转动,带动所述传动机构推动所述隔膜片相对所述泵盖来回移动,以改变所述腔体的大小;
    所述驱动机构通过所述传动机构连接所述隔膜支撑。
  21. 根据权利要求20所述的农业植保机,其特征在于,所述传动机构包括偏心转动件;
    所述驱动机构与所述偏心转动件连接,所述驱动机构转动,带动所述偏心转动件转动,所述偏心转动件推抵所述隔膜片移动。
  22. 根据权利要求21所述的农业植保机,其特征在于,所述传动机构还包括支架以及设于所述支架上的连接部件,所述连接部件与所述隔膜片连接;
    所述偏心转动件转动插接在所述支架中,所述偏心转动件转动,带动所述支架和所述连接部件抵推所述隔膜片移动。
  23. 根据权利要求22所述的农业植保机,其特征在于,所述隔膜支撑套设固定在所述连接部件上。
  24. 根据权利要求22所述的农业植保机,其特征在于,所述支架设有插接槽,所述连接部件插接在所述插接槽中。
  25. 根据权利要求22所述的农业植保机,其特征在于,所述偏心转动件和所述支架的连接处设有垫片。
  26. 根据权利要求22或25所述的农业植保机,其特征在于,所述偏心转动件的一部分与所述支架的内侧壁抵接。
  27. 根据权利要求21所述的农业植保机,其特征在于,所述偏心转动件为偏心轮或偏心轴承。
  28. 根据权利要求20所述的农业植保机,其特征在于,所述驱动机构包括电机,所述电机的主轴伸入所述泵体内并与所述传动机构连接。
  29. 根据权利要求16所述的农业植保机,其特征在于,所述泵盖包括两个,所述隔膜片也包括两个,两个所述泵盖与两个所述隔膜片对应配合;
    其中,两个所述泵盖分别盖设在所述泵体两侧,两个所述隔膜片分别装配在对应的泵盖上,所述腔体包括两个所述隔膜片与对应的泵盖包围形成的第一腔体和第二腔体;
    所述驱动机构驱动两个所述隔膜片分别相对对应的泵盖靠近或远离,使得所述第一腔体和所述第二腔体的大小朝着相反的方向变化。
  30. 根据权利要求29所述的农业植保机,其特征在于,所述农业植保机包括管道;
    所述隔膜泵还包括分别与所述第一腔体连通的第一进液口和第一出液口以及分别与所述第二腔体连通的第二进液口和第二出液口,所述第一进液口和所述第一出液口以及所述第二进液口和所述第二出液口分别设于对应的泵盖的同一侧,且所述第一进液口、第一出液口、第二进液口和第二出液口能够与所述管道相连通;
    当所述第一腔体缩小,所述第二腔体扩大时,所述第一出液口、第二进液口与所述管道连通,所述第一进液口、第二出液口关闭;当所述第一腔体扩大,所述第二腔体缩小时,所述第一进液口、第二出液口与所述管道连通,所述第一出液口、第二进液口关闭。
PCT/CN2018/109197 2018-09-30 2018-09-30 农业植保机的隔膜泵及农业植保机 WO2020062290A1 (zh)

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