Pneumatic diaphragm pump

Pneumatic diaphragm pump

The pneumatic diaphragm pump is a new type of conveying machine that uses compressed air as the power source. It can exhaust all kinds of corrosive liquids, liquid with particles, high viscosity, volatile, flammable and highly toxic liquid. .

Basic overview

The pneumatic diaphragm pump is a new type of conveying machine and is the most novel type of pump in China. Compressed air is used as the power source and can be used for various corrosive liquids.

The pneumatic diaphragm pump is available in four materials: engineering plastics, aluminum alloys, stainless steel, and alloys. Pneumatic diaphragm pumps use nitrile rubber, neoprene, fluororubber, polytetrafluoroethylene, and polytetraethylene ethylene 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 can not be pumped by conventional pumps, and has achieved satisfactory results.

Applications

Because of the above characteristics of the pneumatic diaphragm pump, the pneumatic diaphragm pump has gradually invaded the market of other pumps since its birth and is part of it. For example, the pneumatic diaphragm pump in the paint and ceramic industry has occupied an absolute dominant position, while in other industries, such as environmental protection, wastewater treatment, construction, sewage, fine chemicals, it is expanding its market share, and has other pumps. Alternative status.

The pneumatic diaphragm pump is a new type of conveying machine and is the most novel 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. Due to the use of gas as the power, the flow rate is actively adjusted with the change of back pressure (outlet resistance), which is suitable for medium and high viscosity fluids. The working point of the centrifugal pump is set based on water. If it is used for fluid with a slightly higher viscosity, it must be equipped with a reducer or a frequency converter. The cost is greatly improved, as is the case with gear pumps.

2. The use of pneumatic pumps in flammable and explosive environments is reliable and low cost, such as the transportation of fuel, gunpowder and explosives, because:

First, it is impossible to generate sparks after grounding;

Second, no heat is generated during the work, and the machine will not overheat;

Third, the fluid does not overheat because the pneumatic diaphragm pump minimizes the agitation of the fluid.

3. In the center of the construction site, such as the construction of construction sites, industrial and mining wastewater discharge, due to the impurities in the sewage and complex components, the pipeline is prone to infarction, thus forming an environment with excessive load on the electric pump, the motor is hot and vulnerable. The pneumatic diaphragm pump can pass through the particles and the flow rate is adjustable, and the pipeline is actively stopped when the pipeline is infarction.

4. The other pneumatic diaphragm pump is small in size, easy to move, does not require foundation, has a small footprint, and is simple and economical to place. It can be used as a moving material pump.

5. In the treatment of hazardous and corrosive materials, the diaphragm pump can completely separate the material from the outside world.

6, or in some experiments to ensure that no impurities contaminated raw materials.

7, can be used to transport fluids with relatively unstable chemical properties, such as: photosensitive materials, flocculation liquids, etc. This is because the diaphragm pump has a low shear force and a small physical impact on the material.

working principle

The pneumatic diaphragm pump is a volumetric pump powered by compressed air and 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 pneumatic diaphragm pump, the pneumatic diaphragm pump has the following characteristics:

(1) The pump will not overheat: the compressed air is used as the power, and it is a process of expansion and heat absorption when exhausting. The temperature of the pneumatic pump is reduced when working, and no harmful gas is discharged.

(2) No spark is generated: the pneumatic diaphragm pump does not use electric power for power, and prevents static sparks after grounding.

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

(4) The shearing force on the material is extremely low: how to suck in when working, so the agitation of the material is minimal, and it is suitable for the transportation of unstable substances.

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

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

(7) It can be run empty without danger.

(8) You can work diving.

(9) The fluids that can be transported are extremely wide, from low viscosity to high viscosity, from corrosive to viscous.

(10) There is no complicated control system, no cables, fuses, etc.

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

(12) It is easy to maintain without lubrication, and it will not pollute the working environment due to dripping.

(13) The pump is always efficient and will not be degraded by wear.

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

(15) There is no dynamic seal, the maintenance is simple and avoids leakage, and there is no dead point during work.