A kind of vehicular medicament-mixing device
Technical field
The present invention relates to a kind of vehicular medicament-mixing device, particularly big-and-middle-sized spraying apparatus is realized automatic ration suction medicine on-line mixing, and can realize the separately separately storage of medicine and water, belongs to the equipment for plant protection technical field.
Background technology
The control of damage by disease and insect occupies critical role always in agricultural production, performance and the state of development of equipment for plant protection are directly connected to agricultural production.In equipment for plant protection, the preventing and controlling that medium-and-large-sized sprayer can carry out efficiently, rapidly damage by disease and insect become research emphasis in recent years.Medium-and-large-sized spraying apparatus can carry a large amount of spray liquors and be sprayed in the farmland of large face and do industry, saves the manpower financial capacity, but mostly is to adopt premixed admixing medical solutions, and liquid mixed process is loaded down with trivial details and easily operating personnel are damaged; To the liquid difficult treatment that does not use, sprayer and pipeline-cleaning thereof are cumbersome.
In the prior art, the applicant does not find to consider the online medicine mixer that adapts to big-and-middle-sized spraying apparatus, can change as required mixed concentration.The prior art patent is carried out retrieval type to be found, application number is that 200810027898 Chinese patent " agricultural chemicals mixer with variable atomization " discloses a kind of medicament-mixing device, main consider mixed concentration is controlled of this device, mixed prescription formula is simple in structure, uniformity remains to be investigated, and liquid damages liquid pump by the power liquid pump simultaneously; 201220031643.9 Chinese patent " spray bar type spraying machine medicine mixer " a kind of boom sprayer medicine mixer is disclosed, this device has mainly been considered liquid is carried out on-line automatic mixing, do not consider the uniformity that liquid and water mix, and the mixed concentration under the different operating mode.
Summary of the invention
The object of the invention is to design a kind of vehicle-mounted medicine mixer that is fit to big-and-middle-sized spraying apparatus for the prior art deficiency, can realize liquid and water separately storage and the online evenly rapid mixing of realization, and can control in real time mixed concentration, structural design is ingenious, simple and practical, for big-and-middle-sized spraying apparatus.
For achieving the above object, the technical solution used in the present invention is: whole vehicle-mounted medicament-mixing device is comprised of nozzle and medicine mixer housing two parts.The present invention includes nozzle and medicine mixer housing two parts and form, described medicine mixer housing is comprised of water inlet, suction chamber, trunnion, anemostat, medicine absorbing tube, liquid import and mixture export; The housing mating surface of the lateral surface of described nozzle and medicine mixer housing is taper surface, and the lateral surface of described nozzle is connected with the housing mating face seal extruding of medicine mixer housing, and the axial line of described nozzle overlaps with the axial line of medicine mixer housing; Described nozzle adopts and shrinks taper shape, and the outlet front end of nozzle is straight circular tube shaped pipeline, and described upstream side of the injector outer wall is provided with step, and the circumference side of step is the nozzle faying face, and the nozzle faying face is conical; The water inlet inwall of described medicine mixer housing is straight cylindric, and water inlet connects suction chamber; Described suction chamber arrival end inwall is provided with step, and the inside circumference face of the step of suction chamber is connected with the nozzle faying face sealed extruded of nozzle; The suction chamber inwall is that streamline is conical after the step of suction chamber, and offers medicine absorbing tube at suction chamber; Connect trunnion after the suction chamber; Described trunnion entrance is conical for shrinking, and is straight circular tube shaped pipeline after the trunnion entrance; Connect anemostat after the described trunnion, anemostat is conical for diffusion.
Said nozzle partly adopts and shrinks taper shape, angle of throat θ is 14 °-18 ° in certain muzzle velocity nozzle in order to obtain, it is 5mm-10mm that the jet expansion front end adopts one section straight pipe length s, the jet expansion diameter d is that the outer angle of throat η of 1.5mm-3.5mm is 14 °-18 °), nozzle exit wall thickness 1mm-2mm is determined by nozzle material.
The said nozzle arrival end adopts the double step form outward, and step fixes the location parameter of jet mouth and housing with contact-making surface H, and step contact-making surface K seals and guarantees to form effective stream.
Above-mentioned medicine mixer suction chamber inwall adopts streamline conical, its α be 8 °-12 ° guaranteeing to form effective vacuum, and improve mixed drug effect rate.
Above-mentioned medicine mixer trunnion entrance adopts and shrinks taper shape, and its value β is 50 °-75 °.
Above-mentioned medicine mixer throat pipe diameter D is 2.4mm-4mm), the long L3 of trunnion is 5D-8D.
It is 7 °-11 ° that above-mentioned medicine mixer anemostat adopts conical its angle of flare δ, and its length L 4 is 6D-9D.
Above-mentioned medicine mixer medicine absorbing tube adopts to be threaded is convenient to sealing and replacing.
Above-mentioned vehicle-mounted medicine mixer is suitable for and big-and-middle-sized spraying apparatus, and the total spray amount of sprayer is more than 7.2L/min-12L/min, and perhaps jet expansion speed reaches the normal automatic pharmaceutical worker of the suction work of ability more than the 25m/s-35m/s.
The present invention compared with prior art has following advantage: (1) this medicine mixer can be connected in to spray in the big-and-middle-sized spraying apparatus easily does industry, and working stability is reliable; (2) each parameter of the unpowered parts of this medicine mixer is fixedly the time, and the constant working stability of condition of work is reliable, inhales dose stable, needs to change dose in the work and is controlled and get final product by intervening the self-priming dose; (3) this vehicle-mounted medicine mixer is changed nozzle and housing parameter and can be realized mixed concentration under the different operating modes; (4) this vehicle-mounted medicine mixer nozzle and housing installation requirement all in each design parameter, by optimal design, are installed the simple quality of fit of replacing operation high; (5) this vehicle-mounted medicine mixer utilizes nozzle to produce jet by design and realizes automatically inhaling medicine, and evenly mixes with the high speed water that produces.
The invention solves the online problem of mixed medicine of big-and-middle-sized spraying apparatus, this equipment is connected on kinetic pump delivery port liquid can injury to pump, and mixed medicine can not cause the premix waste of agricultural chemicals in real time, greatly facilitates detergent line.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the nozzle arrangements schematic diagram.
Among the figure, 1-nozzle, 2-suction chamber, 3-medicine mixer housing, 4-trunnion, 5-anemostat, 6-medicine inhaling mouth.
Embodiment
The present invention is described further below in conjunction with accompanying drawing.
Structural representation of the present invention mainly is comprised of jet mouth 1 and medicine mixer housing 3 two parts as shown in Figure 1.Wherein the medicine mixer housing parts comprises suction chamber 2, trunnion 4, anemostat 5, medicine absorbing tube 6, water inlet A, liquid import B and mixture export C.
When enforcement was of the present invention in the real work, the medicine mixer water inlet connected the spraying kinetic pump, and the spraying water enters medicine mixer by water inlet; Current form high-velocity fluid through the effect of jet mouth, and the high-velocity flow of formation forms vacuum at suction chamber, and liquid is sucked and enters suction chamber, and liquid is entrainmented by high-velocity flow and enters trunnion; Liquid mixes with water is full and uniform in trunnion under the effect of high-velocity flow, and mixed liquor enters anemostat; High-velocity flow changes the low speed heavy pressure mixed liquor under the anemostat effect, and high pressure mixing liquid enters atomizer passgae and forms spraying by spraying nozzle.
This equipment adopts the hydraulics basic principle, improves the vehicular medicine mixer that invention is designed for big-and-middle-sized spraying apparatus on the jet pump basis, and this device design is ingenious, and the working stability easy operating can extensively be promoted the use of.This vehicular medicine mixer can be directly connected to and carry out the mixed medicine of real-time online in the atomizer passgae, but spray amount there is certain requirement, total spray amount is more than 7.2L/min-12L/min, perhaps jet expansion speed reach 25m/s-35m/s when above nozzle form jet, produce effective negative pressure and inhale the mixed medicine of medicine.This device is by can spray in the spraying in real time change of concentration of the amount of ACTIVE CONTROL liquid, also can satisfy by the parameter change between jet mouth and the housing need of work under the different operating modes, this device is high, simple to operate by the mixed large control accuracy of concentration adjustable range of both sides' formula control.