Diaphragm pump, also known as control pump, is the main type of actuator, by accepting the control signal output of the modulation unit, with the help of dynamic operation to change the fluid flow. Pneumatic Diaphragm pump is generally composed of actuator and valve. Using compressed air as power source, for all kinds of corrosive liquid, liquid with particles, high viscosity, volatile, flammable, highly toxic liquid, can be pumped out. The characteristics of the diaphragm valve are as follows: the prominent feature is the diaphragm the lower body cavity and the upper valve cover cavity separated, so that the stem, valve disc and other parts located above the diaphragm are not corroded by the medium, eliminating the packing seal structure, and will not produce media leakage. The connection form is usually flange connection; According to the driving mode can be divided into manual, electric and pneumatic three, pneumatic drive is divided into normally open, normally closed and reciprocating three. Diaphragm valve is the use of stem will be elastic film pressed on the seat to cut off the gas path. Turning the handwheel can drive the stem to move up and down, so that the diaphragm away from the seat to open the valve or the diaphragm tightly pressed against the seat to close the valve. The valve, such as the use of butadiene rubber diaphragm, is suitable for pre-stage and pre-pumping pipe and temperature of -25 ~ 80℃ non-corrosive gas. If the fluorine rubber diaphragm is used, it can be used in high vacuum system, and the temperature range is -30 ~ 150℃.
Pneumatic corrosion resistant diaphragm pump in the work, we must remember to check his time, this is because if it is in the process of use, then we have no way to use.
1, if the pump has any small problems, remember, do not let it work. If the pump shaft package is fully worn to be added, the pump will leak if you continue to use it. This increase in automobile consumption and can directly damage the impeller.
2, if the pump uses strong vibration will have to stop to see what cause or will cause damage to the pump.
3, when the bottom valve of the pump leaks, some people will fill the pump inlet pipe with dry soil, wash the valve, this practice is not advisable. Because when the dry soil pipeline pump starts to work in these dry soil into the pump, it will damage the pump impeller and bearings, shorten the service life of the pump. When the bottom valve leaks, be sure to fix it.
4, after the use of the pump must pay attention to maintenance, such as when the use of the pump water put clean pump, it is best to delete and rinse with water.
5. The pump belt is used to flush water and then dry it in the sun without putting the tape in a dark, damp place. Tape does not have to be oil pump, do not apply some glue to tape.
6, carefully check the crack impeller, impeller fastening on the bearing, loose and if there are cracks and loose to timely maintenance, if the pump impeller and dirt can be cleaned.
7, the pump and pipe at the interface must be sealed, because if there is debris into it will cause pump damage.
8, pneumatic corrosion resistance diaphragm pump bearing and check, focus on checking the bearing wear after use, if the pump bearing ball will be in a long time, so when the water pump bearing is a layer of grease to better protect the pump bearing.
