The use of compressed air as a power source, for a variety of corrosive liquid, with granular liquid, high viscosity, volatile, flammable liquid, can be smoked and clean. At the same time, the most obvious difference between the QBY3 third generation pneumatic diaphragm pump and the traditional diaphragm pump is the valve structure. QBY3 series pneumatic diaphragm pump valve structure cancels the traditional “ O” type and column valve structure valve. The three direction pilot is used to eliminate the dead point of the valve and the shutdown of the pump. Provide correct and reliable commutation signal to avoid downtime and faster turnaround pump has more traffic, provide transportation performance of the pulse is smaller, more stable flow. Moreover, the QBY3 third generation pneumatic diaphragm pump has simple and reliable air reversing valve, and it will never stop down. It can avoid the expensive shutdown cost caused by shutdown two. All air valves can be replaced without changing the fluid part. Aluminum parts can resist corrosion caused by unclean air after special treatment. The plastic slider in the reversing valve is durable and durable, and it is not easy to damage. It ensures smooth gas flow and flexible commutation.
Working principle
In the two symmetrically working chambers of the diaphragm pump, each is equipped with an elastic diaphragm, and the connecting rod combines the two diaphragm into one. After the compressed air enters the air valve chamber from the intake joint of the pump, the gas in a working chamber is pushed out of the pump from the back of the diaphragm. When the piston reaches the end of the stroke, the valve mechanism automatically introduces compressed air into the other working chamber to drive the diaphragm pump to move in the opposite direction, thus forming the two diaphragm's synchronous repetitive motion. Two single ball valves are set in each working chamber. The reciprocating motion of the diaphragm causes the volume of the working chamber to change, forcing the two one-way ball valves to turn on and off alternately, so that the liquid can be continuously inhaled and discharged.
extensive use
People in the industry pointed out that the pneumatic diaphragm pump, as a new type of liquid transport equipment, has been widely used in food, chemical, environmental and other industries. The pneumatic diaphragm pump, driven by gas source, has its unique advantages, especially the shearing force of material is very low. It is suitable for the transmission of all kinds of granular materials, such as eight treasure porridge, sauce, fruit pulp beverage. The performance of self - priming and allowing free rotation greatly reduces the difficulty of operation, even if some leftover material at the bottom of the tank can be pumped out. In fact, the equipment does not produce electric spark and does not overheat for a long time, making the transportation of wine more safe and reliable. It is small in size and easy to repair. It will not be caused by the environment of dripping and leakage. It is more in line with the safety and cleanliness of the food and beverage industry. Multi material selection of the pump body material, food grade over current components, tolerance temperature of up to 120 degrees, to meet the different needs of various materials.
Pump weakness, slow pumping
In general, there are several cases of this phenomenon, one is that the gas pressure is reduced. First look at the pressure of the inlet pressure gauge, the pressure value is at 4— the 7 kilogram is normal. Then check the opening position of the gas valve, for example, if the gas source is opened or closed, then check whether the plastic valve piece of the solenoid valve is damaged or not, so that the plastic valve piece can not be fully opened. Two is the muffler blockage, exhaust gas can quickly lead to slow down, pumping. Three is the water or more impurities in the compressed air. After entering the diaphragm pump valve room, it is worn to block the normal reciprocating movement of the piston and the small slider. Four is the air valve cover valve cover because of the constant time under the impact of air pressure caused gas valve cover gasket gas leakage. The five is inside the pump shaft sealing ring wear and leakage.
Flow reduction
This phenomenon generally has the following several conditions, one is the import and export of one-way valve (valve seat wear) becomes small. Or have a bar, large particles stuck in the ball. The material is recharged and the material is pressed back from the inlet when the material is discharged. The two is that the diaphragm has a constant stretch and deformation, which causes the volume of the material cavity to be smaller. The three is blue, and the thick film is broken. When the middle axis drives, it is not in place.
Pump immovable
There may be several cases in this phenomenon. One is the serious wear and tear of the piston and V ring in the valve chamber. The two is the wear of the axle sleeve of the middle axis, and the shaft sleeve should be replaced at this time. The three is the damage of the inner pressure plate at both ends of the pump shaft. Four is the rupture of the two layers. The five is the inverted or flat diaphragm pump.
There are impurities or oil in the material.
This is usually the result of diaphragm pump diaphragm rupture, it is found that the situation immediately shut down the pump intake, stop work and replace the diaphragm. (Insiders recommend that if volatile, flammable, explosive and strong corrosive liquids are transported, the diaphragm should be regularly replaced under the suggestion of manufacturers or engineers, so as to avoid pollution and unnecessary losses, and ensure long-term stable working environment of diaphragm pumps).
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