For common problems before use, please read the operation manual carefully and strictly follow the usage standards and maintenance methods of the sprayer to prevent parts from being damaged or weaken the application compressive strength of instruments and equipment. Inflammable and explosive materials should not be used, otherwise it will cause personal injury or fire and explosion. If the spare parts are found to be faded or overtemperature, they should be removed and replaced immediately.
Sprayers can't hold or smear stimulating objects such as strong acid and alkali, and can't hold hot liquid. When draining water, it is necessary to use a small filter to realize excessive worry and avoid blockage. After the sprayer stops using, its battery should be fully charged and placed in a dry place, and charged once every one or two months.
There are many types of negative manual sprayers with different structures, but according to their principles, they can be classified into two types: liquid pump type and air pump type. Liquid pump type manual sprayer This equipment consists of a liquid medicine tank, a piston pump body, an air chamber, a hose, a spray bar, a power switch and a spray head. When working, the operator swings the swing rod from side to side. According to the function of mechanical structure, the stopper rod moves repeatedly in the pump barrel, and the stroke arrangement is 60 ~100 mm.
When the stopper rod rises, the sealing ring moves from bottom to top. Under the sealing ring, some vacuum pumps are produced due to the continuous expansion of the volume of the inner cavity formed by the sealing ring and the pump barrel. At this time, the liquid medicine in the liquid medicine tank melts into the water inlet ball valve under the action of the difference between the liquid level and the pressure in the cavity, and enters the pump barrel along the water inlet path to carry out the whole moisture absorption process.
When the sealing ring slides down from above, the liquid medicine in the pump barrel is gradually squeezed, which causes the working pressure of the liquid medicine to suddenly rise, the water valve is closed, the water outlet valve is pressed open, and the liquid medicine enters the air chamber according to the water outlet valve. The air in the air chamber decreases, resulting in the working pressure on the liquid medicine (up to 800kPa), and the air chamber has the function of stabilizing the working pressure. When the switch is turned on, the liquid medicine is sprayed out through the nozzle.
Air pump type manual sprayer This equipment consists of a liquid medicine barrel, an air pump and a spray head. The difference between air pump manual sprayer and liquid pump manual sprayer is that the liquid medicine cannot be directly pressurized. Instead, air is pumped into the upper end of the closed medicine barrel by a pump (the liquid medicine is only added to the water level, leaving a part of the indoor space to store the working pressure air), the liquid level is pressurized by the air, and then the liquid medicine is sprayed out through the nozzle.
The air pump can cause the working pressure of 400 ~ 600 kPa, and the production standard of the medicine barrel is higher than that of the liquid pump sprayer. The advantage of air pump sprayer is energy saving in practical operation. Pumping air twice (about 30 ~ 40 times each time) can spray a barrel (about 5L) of liquid medicine. When the liquid pump is working, it is often necessary to press the remote control lever, and the operator is prone to fatigue.