What is pneumatic diaphragm pump? What is the working principle of pneumatic diaphragm pump?

What is pneumatic diaphragm pump? What is the working principle of pneumatic diaphragm pump? What are the precautions for diaphragm pump operation

Pneumatic diaphragm pump has four materials: plastic, aluminum alloy, cast iron, stainless steel. Electric diaphragm pump has four materials: plastic, aluminum alloy, cast iron, stainless steel. Diaphragm pump diaphragm according to different liquid media are made of nitrile rubber, neoprene rubber, fluorine rubber, polytetrafluoroethylene, polytetrafluoroethylene, to meet the needs. Placed in a variety of special occasions, used to pump a variety of media. So what is a diaphragm pump? What is the working principle of diaphragm pump? What are the precautions for diaphragm pump operation? Do you know that? Do not know friends can see the following about the diaphragm pump working principle and diaphragm pump operation precautions.

According to the power used by the diaphragm pump with its actuator, it can be divided into pneumatic, electric and hydraulic three kinds, that is, pneumatic diaphragm pump with compressed air as power source, electric diaphragm pump with electric power source, electrohydraulic diaphragm pump with liquid medium (such as oil, etc.) pressure as power. In addition, according to its function and characteristics, There are solenoid valve, electronic, intelligent, field bus diaphragm pump. Diaphragm pump product types are many, the structure is also a variety of, but also constantly updated and change. Generally speaking, the valve is universal, which can be matched with pneumatic actuator, electric actuator or other actuator.　

Pneumatic diaphragm pump working principle

1, compressed air for power.

2, is a kind of diaphragm reciprocating deformation caused by the volume change of the positive displacement pump, its working principle is similar to the plunger pump, because of the characteristics of the diaphragm pump working principle, so the diaphragm pump has the following characteristics:

1) the pump will not overheat: compressed air for power, in the exhaust is an expansion heat absorption process, pneumatic pump working temperature is reduced, no harmful gas discharge.

2) No electrical spark: pneumatic diaphragm pump does not use electricity for power, after grounding and prevent electrostatic sparks

3) It can pass through liquid containing particles: because of the positive displacement and the inlet is ball valve, it is not easy to be blocked.

4) The shear force of the material is very low: how to suck in how to spit out when working, so the agitation of the material is minimal, suitable for the transport of unstable material

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

6) It has the function of self-priming.

7) Can run empty, without danger.

8) Can dive work.

9) A wide range of fluids can be transported, from low viscosity to high viscosity, from corrosive to viscous.　　

10) No complex control systems, no cables, fuses, etc.

11) Small size, light weight, easy to move.

12) No lubrication so easy maintenance, will not pollute the working environment due to drip.

13) The pump can always maintain high efficiency, will not be reduced because of wear.　

14) 100% energy utilization, when the outlet is closed, the pump will automatically stop, equipment movement, wear, overload, heat

15) No dynamic seal, easy maintenance to avoid leakage. There are no dead ends at work.

First, pneumatic diaphragm pump for the occasion

Because pneumatic diaphragm pump has the above characteristics, so in the world diaphragm pump since the birth is gradually invading the market of other pumps, and occupy a part of it. For example: spray painting, ceramics industry diaphragm pump has occupied an absolute dominant position, and in some other industries, such as environmental protection, wastewater treatment, construction, sewage, fine chemical industry is expanding its market share, and has the irreplaceable status of other pumps. The advantages of pneumatic diaphragm pump are:

1, due to the use of air for power, so the flow with the change of back pressure (outlet resistance) and automatic adjustment, suitable for high viscosity fluid. And the working point of the centrifugal pump is set on the basis of water. If it is used for the fluid with slightly higher viscosity, it needs to support the reducer or frequency conversion governor. The cost is greatly increased, and the same is true for the gear pump.　

2, in flammable and explosive environment with pneumatic pump reliable and low cost, such as fuel, gunpowder, explosive delivery, because: first, after grounding can not produce sparks

Two, no heat generated in the work, the machine will not overheat; Third, the fluid will not overheat because the diaphragm pump to the fluid agitation is minimal.

3, in the site of bad places, such as construction sites, industrial and mining

Waste water discharge, due to the impurities in the sewage and complex composition, pipeline is easy to plug, so the electric pump will form too high load, the motor heating vulnerable. Pneumatic diaphragm pump can pass through the particles and flow adjustable, pipe blocking automatically stop to unobstructed.

4. In addition, the diaphragm pump is small and easy to move, does not need foundation, occupies very little ground, and is simple and economical to install. Can be used as mobile material transfer pump.

5, in hazardous, corrosive material processing, diaphragm pump can be completely separated from the material and the outside world.