The diaphragm metering pump can be divided into two kinds of electric diaphragm pump and pneumatic diaphragm pump according to the original power, and the diaphragm metering pump manufacturer koyu machinery today gives a comparison to the pneumatic diaphragm metering pump and the self-priming pump.

Pneumatic diaphragm metering pump

The pneumatic diaphragm pump USES water vapor to lubricate itself, can work for a long time, and can realize automatic heat dissipation. No lubrication, no card die, easy maintenance.

The pneumatic diaphragm pump has no rotating parts and no shaft seals. The diaphragm separates the pumped medium from the moving parts of the pump and the workpiece media. The medium is not leaking out. Therefore, when pumping toxic, volatile or corrosive media, environmental pollution and personal safety will not be caused.

Post every other row to support body with the connection between the diaphragm seal and good robustness, can prevent the liquid contact center axis, there will be no inflammable and explosive dangerous, can make the pneumatic diaphragm pump used in sulphuric acid, sodium sulfide and other acidic medium with high corrosive and chemical medium. The installation stability of the vertical column between the separation and the intermediate air valve is high, which extends the service life of the pneumatic diaphragm pump in the working process, which is more convenient, saves energy and improves the efficiency.

Pneumatic diaphragm pump has a high energy saving device, suction inlet pipe and outlet pipe of upper and lower end is equipped with medium, and through the post every other row, intermediates and inlet pipe connected to intake pipe and is connected with gas source input pipe, in turn, by a manual ball valve, air filtration pressure regulating valve and leak after type ball valve connected to the diaphragm pump inlet.

Pneumatic diaphragm pump intermediate components, including column, every other row, diaphragm, intermediates, such as structure, airflow through the total air inlet to the intermediate valve, valve from intermediates were confirmed by water lubrication hole, the outflow from intermediate valve of air flow and the other components of coordinating role, to produce the reciprocating diaphragm effect, to realize the qigong diaphragm pump main work.

Self-priming pump

Self-priming pump adopts the axial pump body structure of the liquid, the pump body is composed of suction chamber, liquid storage chamber, coil vortex chamber, the liquid hole, and other components of the gas-liquid separation chamber, pump after the normal starting, the impeller of the suction chamber liquid and inlet line of air inhaled together, and can completely mixed within the impeller, in the role of centrifugal force. The liquid entrainment flows in the outer edge of the vortex coil, forming a white foam belt with a certain thickness on the outer edge of the impeller and a high speed rotary liquid ring.

The gas-liquid mixture enters the gas-liquid separation chamber through the diffusion tube. At this point, the lighter gas is separated from the mixture with a sudden drop in velocity, and the gas continues to rise through the pump body. After degassing of liquid to liquid storage chamber, and the reflux hole again into the impeller, and impeller with inhalation of gases from the inlet line mixed again, under the influence of the high-speed rotating impeller, and flow to the impeller outer edge. As the process goes on and on, the air in the suction line decreases, until the gas is absorbed and the suction process is completed and the pump is put into normal operation.

Pneumatic diaphragm pump is a key product of Shanghai xia fei. It is a quality manufacturer integrating development, production and sales. Spiderman production of pneumatic diaphragm pump is mainly used for transportation and circulation of all kinds of medium, in painting, pottery and porcelain industry occupies the absolute dominance, in environmental protection, wastewater treatment, construction, sewage, fine chemical and other industries also is expanding in the application. There are applications in medicine, chemistry, electronics, semiconductor, pv production and so on.