CN206716257U - A kind of secondary gas-liquid two-phase flow electrostatic sprayer - Google Patents

Abstract

A kind of secondary gas-liquid two-phase flow electrostatic sprayer is the utility model is related to, belongs to agricultural plant protection technical field.The machine includes the frame being supported on wheel and the spray tank, high-voltage electrostatic power and the motor-driven blower fan that are placed in frame, the air side of blower fan is mounted with secondary gas-liquid two-phase flow static nozzle, the air side of blower fan is also connected to spray tank through appendix, the positive pole and negative pole of high-voltage electrostatic power are grounded and are connected to respectively the decoction of spray tank, and the decoction of spray tank is connected to secondary gas-liquid two-phase flow static nozzle through fluid delivery tube；The shower nozzle includes support and sprinkler cap；Spiral nozzle is fixed by lock bracket in sprinkler cap；The contraction cone of sprinkler cap has the damper of adjustable air outlet size with air outlet and kink.The utility model realizes super-low capacity quantization and the fine of droplet of spraying in a manner of secondary gas-liquid two-phase flow is atomized, and spraying penetration power is stronger, and spray amount and mist droplet particle size can be electrodeless controllable, can meet the preventing and treating demand of different pest and disease damages conscientiously.

Description

A kind of secondary gas-liquid two-phase flow electrostatic sprayer

Technical field

A kind of spraying machine is the utility model is related to, especially a kind of secondary gas-liquid two-phase flow electrostatic sprayer of ultra-low volume, Belong to agricultural plant protection technical field.

Background technology

Electrostatic spray makes pesticide droplet charged by different modes such as contact, corona, sensings, and in the presence of electric field force To Target crops or target organismses directed movement, realize the transmission efficient to target of pesticide droplet and deposit.Especially, charged droplets " the outflanking effect " having is favorably improved deposition and coverage rate of the pesticide droplet in concealment parts such as crop blade backs, so as to carry High prevention and control of plant diseases, pest control effect and pesticide efficacy.

The charge-mass ratio of droplet is to influence the key factor of electrostatic spray effect, and it reflects electricity possessed by unit mass droplet Amount.Charge-mass ratio is bigger, illustrates that droplet charging effect is better, is more advantageous to droplet in the presence of electric field force to target（Target crops Or target organismses）Transmit and deposit.There are some researches show low mist flow and high secondary air amount can obtain higher lotus matter Than mist droplet particle size is inversely proportional with charge-mass ratio.Relative to the atomizing types such as electro-hydrodynamic atomization, centrifugal atomizing, pneumatic atomization, gas-liquid two-phase Stream atomization is more conducive to form ultra-fine droplet, while the air velocity of the atomizing type can drive droplet velocities, make droplet have compared with Big mist momentum, so as to not only increase penetrability of the droplet in crop canopies, while provided for droplet to long-range conveying Sharp condition.

Retrieval understands that Application No. 201010136395.X Chinese patent application discloses a kind of sprayer-duster low amounts Shower nozzle, has a low amounts jet pipe, the woven hose upper end installation connecting element of low amounts jet pipe, connector connection low amounts nozzle, outside connector Wall installs impeller by bearing, and blade is formed with impeller, and cap of spraying nozzle is installed in the impeller upper end, and cap of spraying nozzle upper edge is formed with water dumping Hole, the inner chamber of the cap of spraying nozzle are connected with the apopore and woven hose of water dumping hole and low amounts nozzle.The decoction of this shower nozzle passes through Cap of spraying nozzle inwall is impinged upon tentatively to be broken up, in the presence of centrifugal force and wall attachment effect from cap of spraying nozzle lumen centers laterally expanded Dissipate and thrown away from the shunting of water dumping hole, the droplet being finally sprayed onto under triple role on crops such as further smashed by high velocity air Grain is very small, therefore atomizing effect is good.However, the atomization mechanism of the shower nozzle passes through medicine first to hit broken+pneumatic atomization The effect of impact of liquid and cap of spraying nozzle inwall, makes decoction be broken into larger droplet, then is acted on by strength, makes the further mist of droplet More fine mist is melted into, though fine mist can be obtained, the spray amount and mist droplet particle size formed is relatively-stationary, it is impossible to is met The preventing and treating demand of different pest and disease damages.

In addition, the Chinese patent of Application No. 201020135491.8 discloses a kind of ultra-low volume/low-gallonage spraying combination Shower nozzle, including the spout assembly that spout connects into is buckled in by honeycomb screen, sprayer body, decoction connecting tube, spreader, fluted disc, by Solid shafting, bearing, bearing block, impeller, impeller locknut are sequentially connected the rotary blade component of composition;Honeycomb screen is buckled in spout On, spout is flexibly connected with sprayer body, and the inwall of sprayer body has brace rod to fix spreader, and the bottom of spreader is connected with decoction Pipe is connected, and the hypomere of spreader has fluid hole, and fluted disc, hollow cone of the solid shaft assembling in spreader epimere is fixedly mounted in hypomere upper end In hole.During work, it is low capacity shower nozzle to install spout and honeycomb screen, and it is ULV nozzle to remove spout and honeycomb screen.However, its Atomization mechanism is substantially pneumatic atomization+shock and crushed, i.e., makes decoction along spreader outer surface by action of high-speed airflow first Form very thin liquid film, be blown to fluted disc edge, decoction forms brin on crown, then cut off by high velocity air to be formed compared with Big droplet, then it is further broken up into droplet more tiny by the effect of impact of big droplet and the impeller of rotation at a high speed again Droplet, its spray amount and mist droplet particle size regulation are changed by nozzle structure to be realized, and only 2 kinds of spray amounts and mist droplet particle size are big It is small optional, still it is difficult to the preventing and treating demand for meeting different pest and disease damages.

Further, the Chinese patent of Application No. 201310187626.3 discloses a kind of duckbilled wind spraying aid type combined sprinkler, bag Include duckbilled air outlet, deep bead, deflector, shower nozzle, woven hose and air inlet.High pressure decoction enters shower nozzle, shower nozzle by woven hose It is fixed on the outside of duckbilled air outlet；The high velocity air of blower fan blowout enters duckbilled by air inlet, makes air-flow uniform through deflector Blown out by duckbilled air outlet, the liquid stream sprayed with shower nozzle mixes；Deep bead is fixed on the outside of duckbilled air outlet, reduces natural wind pair The influence of liquid stream；Decoction is carried out secondary-atomizing by the utility model using the air-flow that duckbilled air outlet is blown out, and forms thinner mist Drop.Its actual atomization mechanism is electro-hydrodynamic atomization+pneumatic atomization, i.e., makes medical liquid atomizing into larger by one group of fan nozzle first Droplet, then droplet is further atomized into more fine mist by air-flow.Because droplet spectrum width be present in electro-hydrodynamic atomization（That is droplet Thickness it is uneven, big droplet is easy to run off, the easy drift of small droplet, so as to while pesticide efficacy is reduced, cause environment Pollution）The shortcomings that, and droplet volume medium depends mainly on the size of selected fan nozzle model, thus work as After fan nozzle model is selected, the droplet volume medium for being atomized formation is relatively-stationary, it is impossible to according to controlling object Different require and change.

The content of the invention

The purpose of this utility model is：The shortcomings that existing for above-mentioned prior art, propose that a kind of not only droplet is thinner It is small uniformly, penetration power it is stronger, and spray amount and mist droplet particle size can electrodeless controllable secondary gas-liquid two-phase flow electrostatic sprayer, To meet the preventing and treating demand of different pest and disease damages.

In order to reach object above, secondary gas-liquid two-phase flow electrostatic sprayer basic technical scheme of the present utility model is： Including the frame being supported on the wheel and spray tank being placed in frame, high-voltage electrostatic power and motor-driven blower fan, The air side of the blower fan is mounted with secondary gas-liquid two-phase flow static nozzle, and the air side of the blower fan is also connected to medicine through appendix Liquid case, the positive pole and negative pole of the high-voltage electrostatic power are grounded and are connected to respectively the decoction of spray tank, the spray tank when working Decoction be connected to the secondary gas-liquid two-phase flow static nozzle through fluid delivery tube；The secondary gas-liquid two-phase flow static nozzle bag Include by support and sprinkler cap of the simultaneously cap pressure holding at fluid delivery tube end, the support is by central woven hose and passes through radially Web is formed with the ring that woven hose is connected as a single entity, and is fixed by simultaneously cap pressure holding；The sprinkler cap is bored by capped pipe and by shrinking Formed with the bleed pipe with diffusing opening that capped pipe is connected as a single entity, by simultaneously cap elasticity pressure holding；Consolidated in the sprinkler cap by lock bracket Determine spiral nozzle, the spiral nozzle by central tube, the central tube radially outward from wind disk, outside the wind disk Formed before one group of end face to the air vent between helical blade and the wind disk adjoining spiral blade；The central tube The inner is inserted in the woven hose, and has radial direction inlet opening, the fixed atomizer of outer end inserting of the central tube, the mist The outer end for changing nozzle is stretched into the bleed pipe；The contraction cone of the sprinkler cap has air outlet and kink has adjustable air outlet The damper of size.

During work, due to the High voltage output negative pole access spray tank of high-voltage electrostatic power, plus earth, hence in so that decoction Decoction in case is charged.A part of air-flow caused by blower fan constantly enters spray tank by appendix, and malleation is formed on liquid level, So that charged decoction enters secondary gas-liquid two-phase flow static nozzle under gas pressure by fluid delivery tube.When blower fan air side Air-flow enter secondary gas-liquid two-phase flow static nozzle act on sprinkler cap shrink cone conical inboard wall when, elastic pressure holding can be overcome Power so that sprinkler cap produces axial displacement together with lock bracket, spiral nozzle, atomizer and damper, and decoction obtains To enter the central tube of spiral nozzle by inlet opening, and then sprayed by atomizer.At the same time, head cartridge and lock are flowed through The air-flow for determining frame is classified into two-way, to distribution helical blade before being blowed to all the way through the air vent on spiral nozzle, so that axle It is changed into the eddy airstream of the exit region of atomizer to air-flow.Because the central pressure of eddy airstream is minimum, hence in so that defeated The decoction for being sent to atomizer outlet sprays at a high speed under suction, and is hit with eddy airstream, makes decoction through first Secondary gas-liquid two-phase flow atomization is tentatively dripped into mist, and the aerosol drop to be atomized into ultra-fine for the second time lays the foundation；Another way air-flow is then By the annular region between the excircle of spiral nozzle and the capped pipe inwall of sprinkler cap, in the cone that sprinkler cap shrinks cone Because flow-passing surface reduces at wall so that the flow velocity increase of air-flow, form high velocity air, and produced under Venturi effect effect low Pressure, so as to produce suction-operated, the droplet group after primary atomization is set to be sent out in the ejection pipeline section of sprinkler cap with the high velocity air It is raw to hit, mix, second of gas-liquid two-phase flow atomization is realized, the mist drop after being atomized first time is atomized into ultra-fine aerosol Drop, and droplet initial velocity is increased by high velocity air, spray can be subsequently entered to the relatively dense fog momentum remotely conveyed by having droplet The diffusing opening of outlet pipe, disperseed with certain cone angle, it is final to realize the charged droplets through the atomization of secondary gas-liquid two-phase flow in fan airflow In the presence of to long-range conveying, when reaching near Target crops or target organismses, and in the presence of space electric field, make to target Thing or target organismses directed movement and deposition.

Further, platform support is fixed with the frame, be connected rotary base on the described platform support, the rotating disk The rotating disk for forming revolute pair therewith is housed on base, motor-driven blower fan is installed on the rotating disk.

Further, the high-voltage electrostatic power positive pole is picked at frame upper handle by the protection circuit with piezo-resistance Copper sheet, and copper sheet is held by operating personnel and is grounded.

Further, the damper have position air door corresponding with the air outlet and with the bleed pipe phase The casing section matched somebody with somebody, there is the regulating tank for installing fastener in described sleeve pipe section.

Further, the lock bracket by screwed with sprinkler cap external screw thread circle, from external screw thread circle radial direction undergauge and axially prolong The one group of connecting plate stretched and the centring ring composition for passing through connecting plate disjunctor.

Further, the inner of the capped pipe, which has, radially extends flange, is filled between the flange and the simultaneously seam of cap outer end There is spring.

Further, kidney slot air outlet of the contraction cone with circumferentially extending of the sprinkler cap.

Further, one end of the ring, which has, radially extends rib.

Brief description of the drawings

The utility model is further described below in conjunction with the accompanying drawings.

Fig. 1 is the dimensional decomposition structure diagram of the utility model one embodiment.

Fig. 2 is the sectional view of Fig. 1 embodiments.

Fig. 3 is Fig. 2 side view.

Fig. 4 is the secondary gas-liquid two-phase flow static nozzle dimensional decomposition structure diagram in Fig. 1 embodiments.

Fig. 5 is Fig. 4 sectional view.

Fig. 6 is the partial enlarged drawing of off-mode at Fig. 5 A.

Fig. 7 is the partial enlarged drawing of spraying state at Fig. 5 A.

Fig. 8 is Fig. 4 spiral nozzle structural representation.

Fig. 9 is Fig. 8 side view.

Embodiment

Embodiment one

The secondary gas-liquid two-phase flow electrostatic sprayer of the present embodiment as shown in Figure 1, 2, 3, is supported on wheel 32 and universal wheel On frame 1 on dispose spray tank 35, high-voltage electrostatic power 22, and be fixed with platform support 5.Divide on the inside of the wheel shaft of two wheels 32 Zhuan You not arrestment mechanism 34 and the proximity switch 33 that tests the speed.Be connected rotary base 9 on platform support 5, passes through packing ring on rotary base 9 10 are equipped with the rotating disks 11 for forming revolute pair therewith, and the blower fan 16 that motor 19 drives is installed on rotating disk 11.Airscoop shroud outside blower fan 16 18 are equipped with air filter cover 20.The air side of blower fan 16 is mounted with secondary gas-liquid two-phase flow static nozzle 14.The air side of blower fan 16 is also Spray tank 35 is connected to through appendix 40.High-voltage electrostatic power 22 is opened with power switch 23, speedometer 26, toggle switch 27, button Close 28 and be placed in the control cabinet that bottom plate 24 and casing 25 are formed.The plus earth of high-voltage electrostatic power 22, negative pole are connected to decoction The decoction of case.Specifically, the copper sheet that positive pole is picked at the upper handle of frame 1 by the protection circuit with piezo-resistance, passes through work Industry personnel hold copper sheet ground connection.The decoction of spray tank 35 is by interior fluid delivery tube 38 and through flow valve 3 and outer fluid delivery pipe 39 It is connected to secondary gas-liquid two-phase flow static nozzle 14.

Secondary gas-liquid two-phase flow static nozzle 14 as shown in Figure 4,5, including passes through the interior spiral shell of simultaneously cap 14-2 the inners during installation Line connects support 14-4 and sprinkler cap 14-1 of the pressure holding at fluid delivery tube end.Support 14-4 by center woven hose 4-a and The ring 4-c being connected as a single entity by one group of radial web 4-b and woven hose 4-a is formed, and ring 4-c one end, which has, to be radially extended Rib, fixed by simultaneously cap pressure holding at fluid delivery tube end.Sprinkler cap 14-1 is by capped pipe 1-a and by shrinking cone 1-b and capped pipe The bleed pipe 1-c with diffusing opening that 1-a is connected as a single entity is formed, and its capped pipe 1-a the inner, which has, radially extends flange, the flange with And spring 14-10 is housed between the seam of cap 14-2 outer ends, therefore by elastic pressure holding.

Spiral nozzle 14-7 is fixed by lock bracket 14-6 in sprinkler cap 14-1.Lock bracket 14-6 with sprinkler cap 14-1 by revolving The external screw thread circle 6-a of conjunction, from external screw thread circle 6-a radial directions undergauge and axially extending one group of connecting plate 6-b and pass through connecting plate The centring ring 6-c of 6-b disjunctors is formed.Referring to Fig. 8,9, spiral nozzle 14-7 by central tube 7-a, central tube 7-a radially outward from Wind disk 7-b, before one group of wind disk 7-b outer faces to helical blade 7-d and wind disk 7-b adjoining spiral blades Between air vent 7-c form.Central tube 7-a has a radial direction inlet opening 7-e, during assembling in the insertion woven hose 4-a of its inner.In The heart pipe 7-a fixed atomizer 14-8 of outer end inserting, atomizer 14-8 typical structure can be found in 200910100510.5,201510202751. 6, No. 201610108931.2 Chinese patent literatures, bleed pipe is stretched into its outer end In 1-c.Sprinkler cap 14-1 contraction kidney slot air outlet 1-d of the cone with circumferentially extending, and kink is equipped with adjustable air outlet The damper 14-3 of size.Damper 14-3 have position air door corresponding with air outlet 1-d and with bleed pipe 1-c There is the regulating tank 3-b for installing tapping screw 14-11 on the casing section 3-a of matching, casing section 3-a, therefore can be in certain model The relative angular position of spinning modulation section air outlet and air door, realize that air-out regulates and controls.

During work, the High voltage output negative pole of high-voltage electrostatic power is first accessed into spray tank, plus earth, makes decoction charged. A part of air-flow caused by blower fan enters spray tank by appendix and forms malleation so that the charged decoction in spray tank is in air pressure Effect is lower to enter connected secondary gas-liquid two-phase flow static nozzle by woven hose.Hereafter, fan airflow acts on spray Head cap 14-1 conical inboard wall, the axial thrust that can overcome back-moving spring 14-10 pretightning forces is produced, so that sprinkler cap 14-1 Axial displacement is produced together with lock bracket 14-6, spiral nozzle 14-7, atomizer 14-8 and damper 14-3, now Decoction is able to enter spiral nozzle 14-7 by the inlet opening on spiral nozzle 14-7, enters back into coupled atomizer 14-8.And when being stopped, axial thrust caused by fan airflow decreases up to rapidly disappearance, back-moving spring 14-10's Under effect, sprinkler cap 14-1 is together with lock bracket 14-6, spiral nozzle 14-7, atomizer 14-8 and damper 14-3 Produce reverse axial displacement and return to initial position, now, the decoction between spiral nozzle 14-7 and head cartridge 14-4 leads to Road is blocked, and prevents the starting stage that equipment is stopped from still having decoction to be transported to atomizer 14-8 by the design, from And avoid the decoction water clock under off rating, have preferably it is antidrip, only drop function（Referring to Fig. 6,7）.

The specific atomization process of the secondary gas-liquid two-phase flow electrostatic sprayer of the present embodiment is：Air-flow caused by blower fan enters spray First 14 overcome back-moving spring 14-10 axial thrusts, cause sprinkler cap 14-1 together with lock bracket 14-6, spiral nozzle 14-7, atomization Nozzle 14-8 and damper 14-3 together axial displacement while, decoction is able to by the inlet opening on spiral nozzle 14-7 Into spiral nozzle 14-7, coupled atomizer 14-8 is entered back into.Into secondary gas-liquid two-phase flow static nozzle 14 Air-flow by being divided into two parts after head cartridge 14-4 and lock bracket 14-6 again, wherein a part of air-flow is through spiral nozzle 14-7 On 6 air vents, blow on spiral nozzle 14-7 in preceding 6 helical blades to distribution so that high speed vertically originally Uniform air flow produces significant eddying motion, so as to form strength eddy airstream in atomizer 14-8 exit region, due to The central pressure of eddy airstream is minimum, close to vacuum state so that the decoction for being transported to atomizer 14-8 oral areas exists Spray at a high speed under the suction of the strength eddy airstream, and hit with eddy airstream, so as to complete first time gas-liquid two Mutually stream is atomized, and this atomization is in order that decoction initial atomization drips into mist, so as to be dripped to be atomized into ultra-fine aerosol for the second time Offer condition, at the same time, another part air-flow pass through in spiral nozzle 14-7 excircle and sprinkler cap 14-1 cylinder After annular region between wall, because sprinkler cap 14-1 inwall is changed into cone, thus the flow section of air-flow reduces so that The flow velocity increase of air-flow, and low pressure i.e. Venturi effect nearby can be produced from Bernoulli's theorem, swiftly flowing fluid, from And suction-operated is produced, now the droplet group after primary atomization is in the straight length that sprinkler cap 14-1 is exported, with the high speed gas Stream occurs to hit, mixed, and completes second of gas-liquid two-phase flow atomization, and this atomization is primarily to will be thin after first time atomization Droplet is atomized into ultra-fine aerosol drop（20~50 μm of particle diameter）, and droplet initial velocity is increased by high velocity air, there is droplet Larger mist momentum, so as to be more beneficial for, to long-range conveying, subsequently entering the diffusing opening that sprinkler cap 14-1 is exported, now droplet group Disperseed with certain cone angle, and sprayed under airflow function from sprinkler cap 14-1 mouth end, and conveyed to long-range.Manually revolve Turn the size of air outlet on damper 14-3 angulation change sprinkler cap 14-1, the gas-liquid during secondary-atomizing can be regulated and controled Two-Phase Flow Field structure, so that the spray amount of shower nozzle and mist droplet particle size are electrodeless controllable.

Charged droplets after atomization, to long-range conveying, reach Target crops or target organismses are attached in the presence of fan airflow When near, in the presence of space electric field, to Target crops or target organismses directed movement and deposition.

It is summed up, the present embodiment realizes spray on the basis of further investigation in a manner of secondary gas-liquid two-phase flow is atomized The super-low capacity of mist quantifies（Only 0.04~0.12L/min）With the fine of droplet（20~50 μm of particle diameter）, spraying penetration power is stronger, And spray amount and mist droplet particle size can be electrodeless controllable, the preventing and treating demand of different pest and disease damages can be met conscientiously.With prior art Compared to following remarkable advantage：

1. it is more big more be advantageous to droplet in the presence of electric field force to target transmission and deposition based on droplet charge-mass ratio, it is and low Mist flow and high secondary air amount can obtain higher charge-mass ratio, mist droplet particle size size and charge-mass ratio inversely etc. Theory, ultra-low volume secondary gas-liquid two-phase flow electrostatic sprayer of the present embodiment with forced airflow auxiliary realize super-low capacity Amount, ultra-fine droplet and forced airflow assistant spray so that droplet obtains higher charge-mass ratio, so as to improve electrostatic spray effect.

2. be atomized using gas-liquid two-phase flow+the secondary-atomizing mechanism of gas-liquid two-phase flow atomization.Pass through atomization first The strength eddy airstream of nozzle 14-8 exit regions so that be transported to the decoction of atomizer 14-8 oral areas in the strength whirlpool Spray at a high speed under the suction of rotational gas flow, and hit with eddy airstream, so as to complete the atomization of first time gas-liquid two-phase flow, This atomization is in order that decoction initial atomization drips into mist, and condition is provided so as to drip to be atomized into ultra-fine aerosol for the second time, Secondly by absorption of the high velocity air in the straight length of sprinkler cap 14-1 outlets to the droplet group after primary atomization, hit Hit, immixture, complete second of gas-liquid two-phase flow atomization, this atomization is primarily to the mist after first time is atomized drips It is atomized into ultra-fine aerosol drop（20~50 μm of particle diameter）, and droplet initial velocity is increased by high velocity air, there is droplet larger Mist momentum, so as to be more beneficial for long-range conveying.Droplet group after the atomization of secondary gas-liquid two-phase flow enters sprinkler cap 14- Disperseed after the diffusing opening of 1 outlet with certain cone angle, and sprayed under airflow function from sprinkler cap 14-1 mouth end, and to long-range Conveying.In addition, the air velocity of the atomizing type can drive droplet velocities, make the specific larger mist momentum of droplet, so as to not only Penetrability of the droplet in crop canopies is added, and advantage is provided to long-range conveying for droplet.

3. the size of air outlet on the angulation change sprinkler cap 14-1 for passing through rotary damper 14-3, regulate and control secondary-atomizing During gas-liquid two-phase flow field structure so that the spray amount of shower nozzle and mist droplet particle size are electrodeless controllable, to meet different diseases The preventing and treating demand of insect pest.

4. the antidrip only drip trap of existing hydraulic energy nozzle is by the change of decoction pressure, makes the back-moving spring deformation in valve, control The break-make of shower nozzle feed flow runner processed, so as to play a part of antidrip only drop.And the present embodiment then utilizes gas-liquid two-phase flow atomization institute The pressure change of the secondary air needed, makes the back-moving spring deformation in secondary gas-liquid two-phase flow static nozzle 14, and control shower nozzle supplies The switching in liquid stream road, so as to play a part of antidrip only drop, it is specially：Head cartridge 14-4 and spiral nozzle 14-7 connection End face is sealed by pad 14-5, is sealed axially through O-ring 14-9.After equipment starts, fan airflow acts on sprinkler cap 14-1 conical inboard wall, axial thrust is produced, so as to overcome back-moving spring 14-10 pretightning force so that sprinkler cap 14-1 connects Axial displacement is produced together with lock bracket 14-6, spiral nozzle 14-7, atomizer 14-8 and damper 14-3, now medicine Liquid is able to enter spiral nozzle 14-7 by the inlet opening on spiral nozzle 14-7, enters back into coupled atomizer 14-8.When equipment is stopped, axial thrust decreases up to rapidly disappearance caused by fan airflow, in back-moving spring 14-10 In the presence of, sprinkler cap 14-1 is together with lock bracket 14-6, spiral nozzle 14-7, atomizer 14-8 and damper 14-3 mono- Rise and produce reverse axial displacement and return to initial position, now, the decoction between spiral nozzle 14-7 and head cartridge 14-4 Passage is blocked, and prevents the starting stage that equipment is stopped from still having decoction to be transported to atomizer 14-8 by the design, So as to avoid the decoction water clock under equipment off rating.

Claims (8)

1. a kind of secondary gas-liquid two-phase flow electrostatic sprayer, including it is supported on wheel（32）On frame（1）And it is placed in machine Spray tank on frame（35）, high-voltage electrostatic power（22）And motor（19）The blower fan of driving（16）, it is characterised in that：The blower fan Air side be mounted with secondary gas-liquid two-phase flow static nozzle, the air side of the blower fan is also through appendix（40）It is connected to decoction Case, the high-voltage electrostatic power（22）Positive pole and negative pole be grounded and be connected to respectively the decoction of spray tank, the decoction when working The decoction of case is through fluid delivery tube（38、39）It is connected to the secondary gas-liquid two-phase flow static nozzle（14）；The secondary gas-liquid two Mutually stream static nozzle is included by simultaneously cap（14-2）Support of the pressure holding at fluid delivery tube end（14-4）And sprinkler cap（14-1）, institute State woven hose of the support by center（4-a）And pass through radial web（4-b）The ring being connected as a single entity with woven hose（4-c）Structure Into quilt simultaneously fix by cap pressure holding；The sprinkler cap is by capped pipe（1-a）And bored by shrinking（1-b）The band being connected as a single entity with capped pipe The bleed pipe of diffusing opening（1-c）Form, by simultaneously cap elasticity pressure holding；Pass through lock bracket in the sprinkler cap（14-6）Fixed spiral spray Mouth（14-7）, the spiral nozzle is by central tube（7-a）, the central tube radially outward from wind disk（7-b）, positioned at described To helical blade before one group of wind disk outer face（7-d）And the air vent between the wind disk adjoining spiral blade（7- c）Form；The inner of the central tube is inserted in the woven hose, and has radial direction inlet opening, the outer end inserting of the central tube Fixed atomizer（14-8）, the outer end of the atomizer is stretched into the bleed pipe；The contraction cone of the sprinkler cap has Air outlet（1-d）And kink has the damper of adjustable air outlet size（14-3）.

2. secondary gas-liquid two-phase flow electrostatic sprayer according to claim 1, it is characterised in that：It is fixed with the frame Platform support, be connected on the described platform support rotary base, equipped with the rotating disk for forming revolute pair therewith on the rotary base, Motor-driven blower fan is installed on the rotating disk.

3. secondary gas-liquid two-phase flow electrostatic sprayer according to claim 1 or 2, it is characterised in that：The high-pressure electrostatic The copper sheet that positive source is picked at frame upper handle by the protection circuit with piezo-resistance, and copper sheet is held by operating personnel Ground connection.

4. secondary gas-liquid two-phase flow electrostatic sprayer according to claim 3, it is characterised in that：The damper has Position air door corresponding with the air outlet and the casing section to match with the bleed pipe, have in described sleeve pipe section and install The regulating tank of fastener.

5. secondary gas-liquid two-phase flow electrostatic sprayer according to claim 4, it is characterised in that：The lock bracket by with spray External screw thread circle that head cap screws, from external screw thread circle radial direction undergauge and axially extending one group of connecting plate and by connecting plate disjunctor Centring ring form.

6. secondary gas-liquid two-phase flow electrostatic sprayer according to claim 5, it is characterised in that：The inner tool of the capped pipe Flange is radially extended, spring is housed between the flange and the simultaneously seam of cap outer end.

7. secondary gas-liquid two-phase flow electrostatic sprayer according to claim 5, it is characterised in that：The contraction of the sprinkler cap Kidney slot air outlet of the cone with circumferentially extending.

8. secondary gas-liquid two-phase flow electrostatic sprayer according to claim 7, it is characterised in that：One end tool of the ring Radially extend rib.