CN103875646B - A kind of paddy field pneumatic type electrostatic boom sprayer - Google Patents

Abstract

The invention relates to plant protection machinery, in particular to a paddy field pneumatic electrostatic boom sprayer, which includes a four-wheel drive chassis, a frame, an electric control box, a fixed frame and a spray system; the spray system includes a liquid pump, a medicine box, an electric telescopic Cylinder, connecting frame, electrostatic nozzle, middle spray bar, side spray bar, air compressor, high-voltage electrostatic generator, power supply, gas pipeline. When spraying, add liquid medicine and water in proportion; turn on the power, start the high-voltage electrostatic generator to charge the ring electrode; turn on the air compressor, the high-pressure airflow enters from the air inlet along the air pipeline, and accelerates to flow to the electrostatic nozzle Front end: Turn on the liquid pump, the liquid medicine enters the spray rod through the infusion hose, and enters the electrostatic nozzle from the liquid inlet. Charged by the induction of the ring electrode, the charged mist droplets leave the electrostatic nozzle and are sprayed onto the plant surface under the action of the electrostatic field and the power of the gas turbulence.

Description

A Pneumatic Electrostatic Boom Sprayer for Paddy Fields

technical field

The invention belongs to the technical field of plant protection machinery and relates to a spray device, in particular to a paddy field pneumatic electrostatic boom sprayer.

Background technique

At present, the electrostatic nozzles used in domestic boom sprayers are mostly centrifugal or hydraulic atomization, and the charging method is mostly contact charging. These electrostatic nozzles have many problems: short spray range, nozzle leakage, reverse ionization phenomenon Serious, droplet particle spectrum and spray width are not easy to control, etc., the induction charging pneumatic nozzle can solve the above problems well, but because there is no suitable induction charging pneumatic nozzle that can be used with the boom sprayer, so the pneumatic nozzle Electrostatic spray technology has not been applied to boom sprayers; Pneumatic electrostatic spray technology refers to the interaction between high-speed air flow and liquid flow, so that the liquid medicine is atomized inside the nozzle, and the droplets are brought on after passing through the pneumatic electrostatic nozzle embedded in the electrode. The electric charge is adsorbed on the target by doing directional movement; the paddy field sprayer should meet the design requirements of small size and light body. The medicine box solves the subsidence problem of the paddy field boom sprayer well.

Contents of the invention

The main purpose of the present invention is to propose a paddy field pneumatic electrostatic boom sprayer in view of the deficiencies in the prior art. The high-speed airflow atomizes the liquid medicine, and then the droplets are charged by the ring electrode induction. After the charged droplets leave the nozzle, Under the action of electrostatic field and the power of gas turbulence, it is sprayed onto the surface of plants.

The purpose of the present invention is achieved through the following technical solutions:

A paddy field pneumatic electrostatic boom sprayer, characterized in that: the sprayer includes an electrostatic nozzle, an air pipeline, a middle spray boom and a side spray boom; the middle spray boom and the side spray boom have infusion flow channels inside , the middle spray bar and the side spray bar are equipped with several electrostatic nozzles, the electrostatic spray heads pass through the air pipeline, and the middle spray bar and the side spray bars are connected by an infusion hose.

The electrostatic nozzle includes a connection block, a connection pipe, a liquid inlet block, an air inlet block, a sleeve, a ring electrode and a nozzle housing.

The electrostatic sprinkler head is threadedly connected to the middle spray rod or the side spray rod through the connection block at the upper end; the connection block and the connecting pipe, the connecting pipe and the liquid inlet block are all threaded to form the infusion flow channel of the electrostatic spray head, and the connections are sequentially from top to bottom. block, connecting pipe and liquid inlet block; the liquid inlet block is inserted into the air inlet block, the middle part of the air inlet block is located in the gas pipeline, the sleeve and the ring electrode are sequentially inserted into the lower end of the air inlet block, the nozzle shell and the air inlet The lower end of the block is threaded to fix the sleeve and the ring electrode axially. From top to bottom, there are sleeve, ring electrode and nozzle casing.

The electrostatic nozzle has three connection holes, which are the liquid inlet, the air inlet, and the power input port; the liquid inlet is located at the connection between the middle spray bar or the side spray bar and the connection block; the air inlet is opened on both sides of the air intake block, Located in the gas pipeline and close to the shrinkage section of the liquid inlet block, the outer diameter of the middle part of the liquid inlet block is consistent with the diameter of the through hole of the air inlet block, and the outer diameter of the lower end of the liquid inlet block is smaller than the outer diameter of the middle part, which is consistent with the diameter of the air inlet block The through holes form the air flow channel; the power input port is opened on the nozzle shell.

The middle spray bar and the side spray bars are equipped with a number of electrostatic spray heads, and the electrostatic spray heads pass through the gas pipeline. There is a round hole, one side is a big round hole, and the other side is a small round hole, and one side of the small round hole faces the middle spray bar or side spray bar; the air intake block is from the bottom to the top of the big round hole side of the gas pipeline The insertion makes the middle part of the air intake block be located in the gas pipeline, and the liquid inlet block is just inserted into the air intake block simultaneously, and the upper end of the air intake block protruding from the small circular hole is fixed with the fixed block above the gas pipeline by threads.

The sprayer includes a four-wheel drive chassis, a frame, an electric control box, a fixed frame, a liquid pump, a medicine box, an electric telescopic cylinder, a connecting frame, an air compressor, a high-voltage electrostatic generator and a power supply, and the frame and the fixed frame are respectively It is fixed on the front and rear ends of the four-wheel drive chassis; there is a seat at the rear of the four-wheel drive chassis, and the electric control box is placed next to the seat; the medicine box and the liquid pump are fixed on the fixed frame, and the liquid pump is located under the medicine box. There is a filter at the bottom of the box to filter the liquid medicine; the connecting frame, air compressor, high-voltage electrostatic generator, and power supply are all fixed on the frame; the air compressor and high-voltage electrostatic generator are located on the left of the frame, and the power supply is located The right part of the frame; the connecting frame is located at the front end of the frame; the power supply is used to supply the electric energy required by the liquid pump, electric telescopic cylinder, air compressor and high-voltage electrostatic generator.

One end of the electric telescopic cylinder is fixed on the middle spray boom, and the other end is a telescopic push rod, which is connected to the side spray booms on both sides. The electric telescopic cylinder is driven by the power supply to drive the expansion and folding of the side spray booms; unfold the three-section spray boom , After the side spray boom is unfolded, it is in a horizontal state with the middle spray boom. After the operation is completed, fold the three sections of the spray boom.

The middle spray rod and the gas pipeline are respectively welded to the upper end and the lower end of the connecting frame, and the connecting frame is connected to the machine frame.

The input end of the liquid pump is connected to the medicine tank, the output end of the liquid pump is connected to the middle spray bar through the infusion hose, and the side spray bars on both sides are connected to the middle spray bar through the infusion hose. The tank is transported to the spray bar, and the middle spray bar and the side spray bar are provided with an infusion flow channel. After the liquid flow reaches the liquid inlet of each electrostatic nozzle through the infusion flow channel, it flows through the connecting block, the connecting pipe and the liquid inlet block in turn, and then flows from the The front end of the electrostatic nozzle sprays out.

The air outlet of the air compressor is connected to the air pipeline through the air hose, and the air flow enters the air inlet of the electrostatic sprinkler through the air pipeline, and the air flows from the air inlet of the electrostatic sprinkler through the air flow channel to the front end of the electrostatic sprinkler.

The high-voltage electrostatic generator is connected to the power input port of the electrostatic nozzle through a wire, and the wire is connected to the ring electrode through the power input port.

The electric control box is arranged beside the seat to control the switch of the liquid pump, electric telescopic cylinder, air compressor and high-voltage electrostatic generator.

The front and rear traveling wheels are paddy field wheels, and the four-wheel drive chassis is adjustable for high ground clearance.

The present invention has the advantages of: combining the pneumatic atomization technology and the electrostatic spraying technology, a paddy field electrostatic boom sprayer that is beneficial to the prevention and control of paddy field diseases, insect pests and weeds is developed; The charging method requires a small electrostatic voltage (generally 3kV), which reduces the possibility of leakage; saves a lot of water for pesticide dilution, and realizes low-volume spraying; It can repel each other, is not easy to produce condensation, and covers the target more uniformly; the mist droplets have strong penetrating power and firm adhesion, and are resistant to rain erosion, which can significantly increase the amount of liquid medicine deposited on the back of the leaves and hidden parts of the middle and lower leaves of the plant. Reduce the drift of fine mist droplets and ineffective deposition on the ground, improve the utilization rate of pesticides, and reduce the pollution of pesticides to the environment; at the same time, its supporting power is a four-wheel drive chassis, which has high operating efficiency and good maneuverability; the four-wheel drive chassis is The high ground clearance is adjustable, and the ground clearance of the walking chassis is adjusted through the synchronous lifting of the chassis frame, so that the sprayer can meet the needs of mechanized field plant protection operations in various growth stages of rice.

Description of drawings

Fig. 1 is the overall connection schematic diagram of the present invention;

Fig. 2 is a schematic diagram of the spray system of the present invention;

Fig. 3 is a schematic diagram of spraying parts of the present invention;

Fig. 4 is the structural representation of spray bar of the present invention;

Fig. 5 is the structural representation of gas pipeline of the present invention;

Fig. 6 is a schematic front view of the connection of the spray bar, the gas pipeline and the electrostatic nozzle of the present invention;

Fig. 7 is a schematic side view of the connection of the spray bar, the gas pipeline and the electrostatic nozzle of the present invention;

Fig. 8 is a sectional view of Fig. 7;

Fig. 9 is a sectional view of the liquid inlet block of the present invention;

Fig. 10 is a sectional view of the air intake block of the present invention;

Fig. 11 is a sectional view of the ring electrode of the present invention;

Fig. 12 is a cross-sectional view of the nozzle housing of the present invention.

detailed description

The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:

The present invention includes a four-wheel drive chassis 1, a frame 2, an electric control box 3, a fixed frame 4 and a spray system; , middle spray bar 13, side spray bar 14, air compressor 15, high-voltage electrostatic generator 16, power supply 17, air pipeline 18; Wherein the electrostatic spray head 10 is made up of connecting block 20, connecting pipe 21, liquid inlet block 22, air intake Block 23, sleeve 24, fixed block 25, ring electrode 26 and nozzle housing 27.

As shown in Fig. 1 and Fig. 2, frame 2 and fixed mount 4 are respectively fixed on the front end and rear end of four-wheel drive chassis 1; the rear part of four-wheel drive chassis 1 is provided with seat 28, and electric control box 3 is placed on seat 28 Beside; medicine box 7, liquid pump 5 are all fixed on the fixed frame 4, and liquid pump 5 is positioned at the bottom of medicine box 7, and the bottom of medicine box 7 is provided with filter 6; Connecting frame 9, air compressor 15, high-voltage electrostatic generator 16 , power supply 17 are all fixed on the frame 2; As shown in Figure 2, air compressor 15, high-voltage electrostatic generator 16 are positioned at frame 2 left parts, and power supply 17 is positioned at frame 2 right parts; As shown in Figure 1, connect Frame 9 is positioned at frame 2 front ends;

As shown in Figure 2, one end of the electric telescopic cylinder 8 is fixed on the middle spray rod 13, and the other end is a retractable push rod connected to the side spray rods 14 on both sides. The electric telescopic cylinder 8 is driven by a power supply 17 to drive the side spray rods 14 unfolds and folds.

When the present invention works, three sections of spray bars are launched, and the side spray bars 14 are launched and are in a horizontal state with the middle spray bars 13. After the operation is completed, the three sections of spray bars are folded.

As shown in Figure 3, the middle spray bar 13 and the gas pipeline 18 are respectively welded to the upper end and the lower end of the connecting frame 9, and the connecting frame 9 is connected to the frame 2, and several electrostatic nozzles 10 are installed on the middle spray bar 13 and the side spray bars 14. .

As shown in Figures 4 and 5, one side of the middle spray bar 13 or the side spray bar 14 has a hole for connecting with the electrostatic nozzle 10; both sides of the air pipeline 18 have round holes, one side is a large round hole, and the other One side is a small round hole, wherein one side of the small round hole faces the middle spray bar 13 or the side spray bar 14 .

As shown in Figures 6, 7, and 8, the electrostatic nozzle 10 is threadedly connected to the middle spray bar 13 or the side spray bar 14 through the connecting block 20 at its upper end; Through screw connection, there are connection block 20, connection pipe 21 and liquid inlet block 22 from top to bottom; the air inlet block 23 is inserted from bottom to top from the side of the large round hole of the gas pipeline 18, and the liquid inlet block 22 is also just in place. Insert the air intake block 23, the air intake block 23 and the fixed block 25 above the gas pipeline 18 are fixed by threads; the sleeve 24 and the ring electrode 26 are sequentially inserted into the air intake block 23, the nozzle housing 27 and the air intake block 23 are threaded Connect and fix the sleeve 24 and the ring electrode 26 in the axial direction, the sleeve 24, the ring electrode 26 and the nozzle housing 27 are in sequence from top to bottom.

As shown in Figure 8, the electrostatic spray head 10 has three connecting holes, which are respectively a liquid inlet, an air inlet, and a power input port; wherein the liquid inlet is located at the connection between the middle spray bar 13 or the side spray bar 14 and the connection block 20, and The air port is opened on both sides of the air intake block 23, located in the gas delivery pipeline 18 and close to the shrinkage section of the liquid intake block 22, and the power input port is opened on the nozzle housing 27, as shown in FIG. 8 .

When the present invention works, power supply 17 supplies power to liquid pump 5, and the input end of liquid pump 5 connects medicine box 7, and the output end of liquid pump 5 is connected to middle spray bar 13 by infusion hose 12, and side spray bar 14 on both sides and The middle spray rods 13 are connected by infusion hoses 12. During operation, the liquid pump 5 transports the liquid medicine from the medicine tank 7 to the spray rods. The middle spray rods 13 and the side spray rods 14 have through holes through which the liquid flows through After the through hole reaches the liquid inlet of each electrostatic nozzle 10, it flows through the connection block 20, the connection pipe 21 and the liquid inlet block 22 in sequence, and then sprays out from the front end of the electrostatic nozzle 10; a filter is arranged at the outlet of the liquid medicine at the bottom of the medicine box 7 6. Filter the liquid medicine.

The power supply 17 supplies power to the air compressor 15, and the air outlet of the air compressor 15 is connected to the gas pipeline 18 through the gas pipeline 11, and the air flow enters the air inlet of the electrostatic nozzle 10 through the gas pipeline 18; The diameter is consistent with the diameter of the through hole of the air inlet block 23, and the outer diameter of the lower end of the liquid inlet block 22 is thinner than the outer diameter of the middle part, forming an airflow channel with the through hole of the air inlet block 23, and the airflow flows through the airflow from the air inlet of the electrostatic nozzle 10 The channel reaches the front end of the electrostatic shower head 10.

The power supply 17 supplies power to the high-voltage electrostatic generator 16, and the high-voltage electrostatic generator 16 is connected to the power input port of the electrostatic shower head 10 through a wire 19, and the wire 19 is connected to the ring electrode 26 through the power input port.

The electric control box 3 is arranged beside the seat 28, and controls the switch of the liquid pump 5, the electric telescopic cylinder 8, the air compressor 15 and the high-voltage electrostatic generator 16.

When carrying out the spraying operation, first open the liquid filling port, add liquid medicine and water in proportion; connect the power supply 17, start the high-voltage electrostatic generator 16 to charge the ring electrode 26; Enter from the air inlet, and accelerate the flow to the front end of the electrostatic nozzle 10; turn on the liquid pump 5, the liquid medicine enters the spray rod through the infusion hose 12, and enters the electrostatic nozzle 10 from the liquid inlet, and the high-speed airflow breaks the liquid into fine droplets And push the mist to be ejected from the front end of the electrostatic nozzle 10. When the mist is sprayed, it is charged by the ring electrode 26 induction. After the charged mist leaves the electrostatic nozzle 10, it is sprayed onto the plant surface under the action of the electrostatic field and the power of the gas turbulence. .

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be carried out Modifications or equivalent replacements without departing from the spirit and scope of the technical solution of the present invention shall be covered by the claims of the present invention.

Claims (9)

1. a paddy field pneumatic type electrostatic boom sprayer, is characterized in that: described sprayer comprises static nozzle, gas pipeline, middle spray boom and side spray bar; Have transfusion runner in the bar of middle spray boom and side spray bar, middle spray boom and side spray bar are equipped with some static nozzles, static nozzle, through gas pipeline, is connected by infusion tube between middle spray boom and side spray bar;

Static nozzle comprises contiguous block, tube connector, feed liquor block, air inlet block, sleeve, annular electrode and nozzle housing;

Static nozzle is threaded with middle spray boom or side spray bar by the contiguous block of its upper end; Contiguous block and tube connector, tube connector and feed liquor block are all threaded connection the transfusion runner forming static nozzle, are followed successively by contiguous block, tube connector and feed liquor block from top to bottom; Feed liquor block is inserted in air inlet block, the middle-end part of air inlet block is positioned at gas pipeline, sleeve and annular electrode are inserted in air inlet block lower end successively, nozzle housing and air inlet block lower end are threaded connection and make sleeve and annular electrode axial restraint, are followed successively by sleeve, annular electrode and nozzle housing from top to bottom;

Static nozzle has three connecting holes, is respectively inlet, air inlet, power inlet; Wherein inlet is positioned at middle spray boom or side spray bar and contiguous block junction; Air inlet is opened in air inlet block both sides, be positioned at gas pipeline and the contraction section of close feed liquor block, the external diameter of feed liquor block mid portion is consistent with the through-hole diameter of air inlet block, and feed liquor block lower end external diameter is thinner than the external diameter of mid portion, forms gas channel with the through hole of air inlet block; Power inlet is opened on nozzle housing.

2. a kind of paddy field as claimed in claim 1 pneumatic type electrostatic boom sprayer, it is characterized in that described middle spray boom and side spray bar are equipped with some static nozzles, static nozzle is through appendix Dow Jones index: middle spray boom or side spray bar side have hole, for being connected with static nozzle; Gas pipeline both sides all have circular hole, and side is big hole, and opposite side is small sircle hole, and wherein small sircle hole side is towards middle spray boom or side spray bar; Being inserted from the bottom up from gas pipeline big hole side by air inlet block makes the middle-end part of air inlet block be positioned at gas pipeline, simultaneously feed liquor block is also just inserted into air parcel, and the fixed block stretched out above the air inlet block upper end of small sircle hole and gas pipeline is fixed by screw thread.

3. a kind of paddy field as claimed in claim 1 pneumatic type electrostatic boom sprayer, it is characterized in that: described sprayer also comprises four wheel drive chassis, frame, electric cabinet, fixed mount, liquid pump, medicine-chest, electric expansion cylinder, link, air compressor, HV generator and power supply, and frame and fixed mount are individually fixed in the front-end and back-end on four wheel drive chassis; Rear portion, four wheel drive chassis is provided with seat, and electric cabinet is placed in by seat; Medicine-chest, liquid pump are all fixed on fixed mount, and liquid pump is positioned at below medicine-chest, is provided with filter bottom medicine-chest, filters liquid; Link, air compressor, HV generator, power supply are all fixed in frame; Air compressor, HV generator are positioned at frame left part, and power supply is positioned at frame right part; Link is positioned at frame front end; Power supply is for supplying the electric energy needed for liquid pump, electric expansion cylinder, air compressor and HV generator.

4. a kind of paddy field as claimed in claim 3 pneumatic type electrostatic boom sprayer, it is characterized in that: electric expansion cylinder one end is fixed on middle spray boom, the other end is the push rod that can stretch, be connected with the side spray bar on both sides, electric expansion cylinder is by power drives and then drive the expansion of side spray bar and fold; Launched by three sections of spray booms, be in level with middle spray boom after side spray bar launches, operation is complete, is folded up by three sections of spray booms.

5. a kind of paddy field as claimed in claim 3 pneumatic type electrostatic boom sprayer, is characterized in that: middle spray boom and gas pipeline weld with the top and bottom of link respectively, and link is connected with frame.

6. a kind of paddy field as claimed in claim 3 pneumatic type electrostatic boom sprayer, it is characterized in that: the input of liquid pump connects medicine-chest, liquid delivery side of pump is connected to middle spray boom by infusion tube, the side spray bar on both sides is connected by infusion tube with between middle spray boom, during work, liquid is transported to spray boom from medicine-chest by liquid pump, middle spray boom and side spray bar have transfusion runner, after liquid flows through transfusion runner arrives each static nozzle inlet, flow through contiguous block, tube connector and feed liquor block successively, then spray away from static nozzle front end.

7. a kind of paddy field as claimed in claim 3 pneumatic type electrostatic boom sprayer, it is characterized in that: air compressor gas outlet is connected to gas pipeline by air hose, air-flow enters static nozzle air inlet by gas pipeline, and air-flow flows through gas channel until static nozzle front end from static nozzle air inlet.

8. a kind of paddy field as claimed in claim 3 pneumatic type electrostatic boom sprayer, is characterized in that: HV generator is connected to static nozzle power inlet by wire, and wire is connected to annular electrode by power inlet.

9. a kind of paddy field as claimed in claim 3 pneumatic type electrostatic boom sprayer, is characterized in that: electric cabinet is arranged in by seat, controls liquid pump, electric expansion cylinder, air compressor and HV generator switch.