The working principle and characteristics of pneumatic diaphragm pumps

Pneumatic diaphragm pump is a kind of compressed air as the power, by the diaphragm reciprocating deformation caused by volume changes in the volume of the pump, its working principle is similar to the plunger pump, due to the characteristics of the working principle of pneumatic diaphragm pump, so pneumatic diaphragm pump has the following characteristics.

(1) the pump will not overheat: compressed air for power, in the exhaust is a process of expansion and heat absorption, pneumatic pumps work at a reduced temperature, no harmful gas discharge.

(2) will not produce electric sparks: pneumatic diaphragm pumps do not use electricity for power, grounded and prevented electrostatic sparks.

(3) can pass through the particle-containing liquid: because of the volumetric work and the inlet for the ball valve, so it is not easy to be blocked.

(4) The shear force on the material is extremely low: the work is how to suck in how to spit out, so the stirring of the material is minimal, suitable for the transport of unstable substances.

(5) The flow rate can be adjusted, and a throttle valve can be installed at the material outlet to adjust the flow rate.

(6) It has the function of self-priming.

(7) Can be run empty without danger.

(8) Can work submerged.

(9) An extremely wide range of fluids can be conveyed, from low to high viscosity, from corrosive to viscous.

(10) No complicated control systems, no cables, fuses, etc.

(11) Small size and light weight make it easy to move.

(12) No need for lubrication so easy maintenance and no contamination of the working environment due to dripping.

(13) The pump is always efficient and does not degrade due to wear and tear.

(14) 100% energy utilization, when the outlet is closed, the pump automatically stops, there is no equipment movement, wear and tear, overload, heat generation.

(15) There are no dynamic seals, easy maintenance avoids leaks and no dead spots when working.

Public characteristics

1、Since air is used as power, the flow rate is automatically adjusted with the change of back pressure (outlet resistance) and is suitable for medium to high viscosity fluids. The working point of the centrifugal pump is set with water as the benchmark, if used for slightly higher viscosity fluids, it requires a matching reducer or frequency converter, the cost is greatly increased, and the same is true for gear pumps.

2, pneumatic diaphragm pump in a flammable and explosive environment with pneumatic pumps reliable and low cost, the third, the fluid will not overheat because the diaphragm pump on the fluid stirring the minimum.

3, in poor places on site, such as construction sites, industrial and mining wastewater discharge, due to the impurities in the sewage and complex composition, the pipeline is easy to block, so that the electric pump will form a high load, the motor is hot and fragile. Pneumatic diaphragm pump can pass particles and adjustable flow, the pipeline is blocked automatically stop to clear.

4, in addition, the pneumatic diaphragm pump is small and easy to move, no foundation, occupying very little ground, easy and economic installation. Can be used as a mobile material transfer pump.

5、In the handling of hazardous and corrosive materials, diaphragm pumps can be completely separated from the outside world.

6, pneumatic diaphragm pumps can be used to transport chemically unstable fluids.

The role of pneumatic diaphragm pumps in the industrial field is huge, many difficult to be completed manually by humans can be completed by pneumatic diaphragm pumps, indirectly ensuring the safety of employees at work.