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How To Choose A Pneumatic Diaphragm Pump Diaphragm

- Sep 15, 2018 -

How to choose a pneumatic diaphragm pump diaphragm

Pneumatic diaphragm pumps have been invading the market for other pumps since their inception and are part of it. Such as: spray diaphragm, ceramic industry, pneumatic diaphragm pump has occupied an absolute dominant position, while in other industries, such as environmental protection, wastewater treatment, construction, sewage, fine chemicals are expanding its market share, and other pumps can not Alternative status.

    The pneumatic diaphragm pump is a new type of conveying machine and is the most innovative type of pump in China. Compressed gas is used as the power source. For various corrosive liquids, liquids with particles, high viscosity, volatile, flammable and highly toxic liquids can be exhausted. The pneumatic diaphragm pump is available in four materials: plastic, aluminum alloy, cast iron, and stainless steel. Pneumatic diaphragm pumps are made of nitrile rubber, neoprene, fluororubber, polytetrafluoroethylene, and polytetramethylene according to different liquid media. To meet the needs of different users. It is placed in various special occasions and used to pump various media that cannot be pumped by conventional pumps, and has achieved satisfactory results.


1, the material selection is not correct: the diaphragm should be selected according to the medium used, and some must be customized. For example, some diaphragms are not resistant to organic solvents. If you go to organic solvents, it is easy to break. The temperature of the diaphragm is moderate, and the medium is conditional, especially temperature.

2, the correct and reasonable use: If the choice of materials is correct, that is, the material of the diaphragm is just suitable for the material used by the pump, and the quality of the diaphragm itself is no problem. The diaphragm is prone to be bad and should be related to the correct use. Diaphragm pumps are often operated at high speeds, often hitting half-air, etc., which will affect the life of the diaphragm. The large amount of solid particles in the logistics will also affect the service life.

3. The life of the diaphragm is a certain value of the number of uses, 8 million to 20 million times. If used correctly, it can be used continuously for 1000 hours to 3000 hours according to the lowest value. If the diaphragm is always damaged, the biggest factor is that the diaphragm material is not selected. Click here to see the effect of solvent on diaphragm diaphragm material.

4, the durability of the diaphragm is related to the transport medium, and has nothing to do with the price. Like the delivery of sodium hydroxide solvent, nitrile rubber is better than fluororubber, and the price is much cheaper. How to choose the diaphragm pump diaphragm, it is recommended to consult Baolong pump valve. In addition, it should be noted that the solid particles in the conveying medium should not be too large and exceed the specified value of the pump. Minimize the number of idlings, and the life of the diaphragm is also related to its number of turns.


Working principle of pneumatic diaphragm pump valve:

1. Compressed air is the power.

2. It is a volumetric pump caused by the reciprocating deformation of the diaphragm. The working principle is similar to that of the plunger pump. Due to the working principle of the diaphragm pump, the diaphragm pump has the following characteristics:

3, the pump will not overheat: compressed air for power, in the exhaust is a process of expansion and heat absorption, the temperature of the pneumatic pump is reduced, no harmful gas is discharged.

4, will not produce electric spark: pneumatic diaphragm pump does not use electricity for power, and prevents static sparks after grounding

5, can pass the liquid containing particles: because the volumetric work and imported as a ball valve, it is not easy to be blocked.

6. The shearing force on the material is extremely low: how to suck in when working, so the stirring of the material is the smallest, suitable for the transportation of unstable materials.

7, the flow can be adjusted, you can add a throttle valve at the material outlet to adjust the flow.

8, with self-priming function.

9, can run empty, without danger.

10, can work diving.

11. The fluids that can be transported are extremely wide, from low viscosity to high viscosity, and viscous from corrosive.

12. There is no complicated control system, no cables, fuses, etc.

13, small size, light weight, easy to move.

14, no lubrication, so maintenance is simple, will not pollute the working environment due to dripping.

15. The pump is always efficient and will not be reduced due to wear.

16, 100% energy utilization, when the outlet is closed, the pump automatically stops, equipment moves, wears, overloads, heat

17, no dynamic seal, easy maintenance to avoid leakage. There is no dead point when working.

Add: No.658,20th Avenue,Hangzhou Economic & Technological Development Zone,Hangzhou,Zhejiang,China

Tel: 86-571-86878013

        86-571-86403988

        86-571-86400588

        8615058179600

Fax: 86-571-86408588

Code: 310018

E-mail: yangyang@depamu.com


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