Pests and diseases destroy the growing crop, if you regularly are not processed LANDING special means. And does it best with a special device called the atomizer. They come HAND, battery and petrol-engined It’s about them and will further story.
Knapsack sprayer benzo (aka Benzo sprayer) from the point of view of design is a metal frame fixed on it with a two-stroke engine. Above it is a tank for chemicals. In the working position the engine and the tank located behind the operator. According hose active substance is fed to the spray nozzle by manipulating that, the owner of «plantation» handles specific plant or group of plants rather than simply sprays the mixture throughout. Also on the spray nozzle is typically arranged controls and power unit: ignition trigger and gas (mostly) adjustable jet fluid supply.
According to the principle of the majority of models of knapsack sprayers benzo resemble conventional blower: air-flow accelerates drive gasoline engine generates a stream of air. However, there are differences: in parallel with the main blowing by the same pneumatic part of the tank created a slight artificial pressure.
Under its influence the fluid flows through the hose to the jet nozzle fixed at the mouth, and literally breaks the air stream to a state of fine mist. Sometimes hoses gasoline-pump sprayers is further provided with a vertical pumping: this design allows you to completely deflate the active substance from the tank. However, in the opinion of some members, benzo spray works fine even with the lid tightly screwed tank, that is, the excess pressure was created does not seem to be, and gravity chemicals act. Needless to say, the vertical spray with little-effectively. Is it true this statement is for certain models -better to find out from the producers and sellers.
Benzo-spray, working on the principle described above, have a number of advantages, which largely explains their popularity among users. One of the main advantages — the construction itself allows you to use the unit as benzo-blowers. Some models besides spraying greenery liquid preparations using additional pipes may be used for the treatment section powdered drugs and even site to inoculate seeds. Of course, the seeds must be small, peas or beans so sow, of course, impossible.
Much rarer design without hard socket. In them the liquid is forced or flows by gravity into an intermediate flask from which the pressure generated by two-piston (plunger) pump is supplied to the spray nozzle. Advantages of this method is the absence of the hard socket (which in some cases is really convenient and allows processing plants more carefully), and smaller, according to the manufacturer, the active fluid flow. However, such spray-benzo not be used as a blower, they only work with liquids, but not powder.
The heart of any GASOLINE is the engine, and benzo spray is no exception. As a rule, manufacturers of single-cylinder two-stroke put here carburettor power unit. Why not four? Firstly, the two-stroke engine has a smaller mass compared with the same four-power analog, and this is important, because it will be worn on the back. Second, it has a higher specific power per unit working volume of the cylinder. Finally, the main reason is that the backpack sprayers Motta with four-stroke engines can not operate at a significant inclination with respect to the horizon, which are inevitable when working. That’s why «chetyrehtaktniki» almost tied for benzo-sprayers, as well as at many other varieties of garden gasoline-technology. Although from this rule there are exceptions, such as Makita EVH2000.
The peculiarity of two-stroke engines is that for the normal operation of the motor are necessary to fill the gasoline fuel mixture with the oil strictly following proportions. The most commonly used ratio of 1:50, less -1: 40, from the budget of the Chinese model meets the recommended 1:25. However, if you believe the repairmen of the service centers, such recommendation indicates the poor quality of the metal material of the cylinder, as prescribed by the manufacturer increase the amount of oil in the fuel mixture is intended to somehow extend the life of the unit.
To prepare the fuel mixture is suitable not just gasoline: the vast majority of manufacturers recommend the use of brand AI92 and no other. The operator is not confused with pure gasoline has finished fuel mixture for two-stroke engine oil paint usually blue, green or red. Use only those brands that are designed for garden equipment: boat oil (for water-cooled engines) can not be used. Harvest fuel mix for the future there is no reason, ie. A. Two or three weeks it will start again to delaminate on gasoline and oil. And what exactly should not do under any circumstances, since it is to fill a two-stroke engine clean gasoline, as all over the breakdown: jam the piston in the cylinder, incidentally, most likely destroyed the piston ring, and repair — pardon the pun — is guaranteed to be non-warranty, and not cheap .
Options and settings
Market knapsack sprayers benzo-though not amazing in its diversity, but here the problem of choice still exists and may confound potential buyer. Therefore, in addition to characteristics such as weight, volume of the tank for chemicals and performance of the unit as a whole are of great importance the various options that manufacturers supply their products freely. It is worth noting that in most cases this is not an attempt to «tear off» the extra money from the buyer, and really useful additions that give a tangible effect.
Reducing toxic emissions. It is hardly necessary detail to paint advantages that the operator will not breathe the dirtiest type of carbon monoxide (CO). From the structural point of view, the goal is achieved by equipping additional cylinder closed passageways, which increases the efficiency of fuel-air mixing. As a result, the fuel mixture is burned almost completely. The primer or booster pump. Externally is a small soft «buttons» in the form of a hemisphere, when clicked, the fuel mixture is forcibly injected directly into the carburetor and drain any excess fuel back to the tank. Through the use of a primer engine starts easier and faster, do not need to fill in the carburetor fuel, which in the absence of primer comes here only after several «dummy» jerks starter. Especially useful primer on startup in cold weather: it significantly reduces the load on the starter mechanism and prolongs the life of the latter.
Lightweight start. With its convenient location ensures starter allows you to start benzo spray without removing it from the back or through the special design of the «puskacha» helps produce run effortlessly.
By the way, the best option is a combination of both design solutions.
And if the location of the starter questions asked (manufacturers put it in a part of the device, which is convenient to reach out a hand), then the system can reduce the impact force at the start, this is interesting. A similar effect is achieved by installing an additional spring, through which the rotation of a starter rope reel is transmitted to the flywheel. Pulling the cord, the operator recharges the spring which then sharply straightens, and starts the engine. There is no need sharply and firmly pull the starter, we just have to gently pull the starter cord handle.
Decompression valve. Another device, also simplifies the start-up and used in engines with large (more than 50 cm3) working volume. The valve is opened manually, this part of the compressed mixture is discharged from the cylinder, reducing the resistance to movement of the piston, and the operator is no longer necessary to apply considerable force to start the engine. Decompression valve also extends the life of the starter cord and the pulley by reducing the burden on them. After starting the engine the decompression valve automatically closes. In addition to these options, it is impossible not to note a variety of enhancements designed to make the process of spraying more comfortable and less tiring. This should include: wide backpack straps; soft thermal lining between the engine and the back of the operator: the suspension vibration between the engine and the frame; the ability to install lap belt; lightweight design of the frame — the main thing that in this case she has had additional stiffening ribs; translucent chemical solution tanks and fuel mixture, so that the user can see the remaining level of fluid; wide neck for easy pouring chemicals.
Also worth noting is useful know-how relating to the process of spraying, for example, an electrostatic charge sprayed droplets (particles of an aqueous solution obtained electric charge, then they better stick to the leaves and stem of the plant), or special rotating nozzles for spray film having increased penetrating power. All these options are normally reflected in the passport, so before buying it makes sense to spend some time to study this document.
When working «in the field», you can change the flow rate of the liquid, switching jet at the mouth, and in addition, to adjust the nozzle to the desired mode for adjusting the flame shape. A combination of both adjustments to produce the desired spray settings ranging from jet to fine mist, as for different plants have their own requirements regarding spraying technology. Thus, a powerful jet required for chemical processing dense foliage of grapes, hardly suitable for beds with garden strawberries.
When spraying powdery substance fluid hose is removed, and in its place installed a special nozzle. Powders, granules or seeds (in the latter case it is particularly important) does not come into contact with the fan maintenance unit, and fed directly to the nozzle. Some producers immediately bundle their products with this pipe, but in some cases it is supplied as an option, which, along with interchangeable nozzles have to be purchased separately.
Interchangeable nozzles (eg, rotary and electrostatic), offered as an option, are usually designed to perform specific operations — handling of any particular culture, creating an even more fine mist than can provide the main nozzle that comes bundled, painting trees or creating narrow stream of air for operation as a blower. Additional equipment includes special rod, allowing to increase the length of the nozzle.
Sometimes as additional equipment serves pressure pump installed in a tank for reagents. As you might guess, the device increases the pressure at the outlet from the tank, allowing you to perform a vertical spray and mixes the liquid in the tank, which is very convenient when you have to work with is stratified structures.
Tanks for chemicals themselves are made of plastic, resistant to corrosion. Information on the chemical inertness of plastic (ie the list of substances that are unable to inflict any harm either) must be contained in the passport, otherwise it is recommended to look for another model of the sprayer. The same applies to the spray, which tank is made of an opaque material: like anything «criminal» is not, however, use such a unit rather uncomfortable.
Important notice: even using the unit with a tank made of a chemically resistant plastic, should not be forgotten that all the solutions, which can be operated spray benzo (detailed list, as already mentioned, must be contained in the passport), are aquatic. This means that the mixture, wherein the solvent is not water, but other liquids, in the vast majority can damage plastic tank for the chemicals. Moreover, they are likely to withdraw from the spray channels the spray system.
MAINTENANCE AND SAFETY After each use benzo spray tank and hose system should be rinsed with water to avoid deposits of solute. The best way to solve this problem as follows: the tank thoroughly rinsed (here the user once again appreciate the convenience of a wide neck), and to clean the canal system, simply pour clean water has washed the tank, and for awhile benzo-spray, putting the jet at maximum feed liquid. After using powdered chemicals can not hurt to shake the remnants of the powder out of the socket and include benzo spray as a blower, carefully blow the whole system.
Cleaning the tank and feeding channels — not the only maintenance required. Like most garden machinery, benzo-sprayers require a thorough annual inspection and functional test some nodes. Service centers, maintenance of the equipment and benzo-blowers dispensers strongly recommended once a year to carry out a comprehensive maintenance system, namely to check the condition of the cylinder and piston group, especially the piston rings; clean up of soot and leak check the cylinder and piston; to make adjustment of the carburettor; to clean or replace the air and fuel filters; check the tightness of the pipes and seals; to make adjustment of the gap in the ignition distributor and check it is working; Check the efficiency of the spark plugs and the gap between its electrodes.
List of operations more than respectable, and most of them are carried out exclusively at the service center, and only by specialists. Himself operator is not out of place during the year to check the condition of the air filter and if necessary, rinse it with warm water and soap (but not in gasoline).
Preventive maintenance helps to prevent most of the damage, but can not eliminate them completely. And the most frequent cause of failure exit the tool, as is the case with many other varieties of garden machinery, — a violation of the rules of operation. Most often affected system hoses and tank owners are too lazy or forget to wash or pour the solutions, the work that is not provided by the equipment manufacturer. The second place in frequency of failure belongs to the cylinder and piston group suffering from properly prepared fuel mixture. It comes to the fact that some «handymen» manage to be added to the gasoline engine does not, and vegetable oil, which is guaranteed to lead to piston seizure.
If benzo-sprayer suddenly decided to leave the room with the temperature below zero, which voobscheto is not recommended to be traced at least to ensure that the unit had no inside any liquid. An effective way to prevent problems is proper preservation for the winter: it is necessary to dry the system hoses and ducts, including benzyl spray as a blower. Then you need to remove all fuel from tank and run the engine up to full production of fuel remaining in the fuel pipe and the carburettor. After that you should remove the spark plug and fill the cylinder 3040 ml of oil for two-stroke engines, and then put the spark back in the spring before the first start again unscrew the spark plug and drain the oil.
Taking care of the safety and serviceability of technical tools, do not forget about yourself. Work must be safe and comfortable. The first is achieved by the use of protective equipment and respirators points, and in some cases (for example, by spraying the plants in poorly ventilated corners and enclosed on three sides of the niches) even masks. It is highly recommended to put on comfortable shoes and clothing, not to cling to the bushes and do not provoke the fall of the operator on the ground with 10kilogrammovym knapsack on his back. Use garden tools with a petrol engine in closed rooms (greenhouses, greenhouses, and so on. D.) Is strictly forbidden — there is a high risk of poisoning by exhaust fumes. It should equip electric or manual sprayers. The specific model benzo spray definitely should be «sewn» by the owner, only then the work will be comfortable. By purchasing the device, it would be superfluous to «try on», having set up behind his back, to see how the weight is distributed device, do not press any seat, not limited by any frame in the lower back. Systems amortization, soft pads and wide straps backpack, as discussed above, are also helping to ensure operator comfort. As a result, concerns about his favorite garden cease to be burdensome, and are just a joy.