1. Since air is used as power, the flow rate is automatically 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 a fluid with a slightly higher viscosity, a reducer or frequency converter is required, which greatly increases the cost. The same is true for gear pumps. 2. It is flammable and explosive. 1. Because air is used as power, the flow rate is automatically 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 a fluid with a slightly higher viscosity, a reducer or frequency converter is required, which greatly increases the cost. The same is true for gear pumps. 2. It is reliable and low-cost to use pneumatic pumps in flammable and explosive environments, such as the transportation of fuel, gunpowder, and explosives, because: first, it is impossible to generate sparks after grounding; second, there is no heat generation during work, and the machine does not It will overheat; third, the fluid will not overheat because the diaphragm pump has the least agitation to the fluid. 3. In places with harsh construction sites, such as wastewater discharge from construction sites and industrial mines, due to the large amount of impurities and complex components in the sewage, the pipeline is easy to be blocked, which will cause excessive load on the electric pump, and the motor will be easily damaged due to heat. The electric diaphragm pump can pass particles and has an adjustable flow rate. When the pipeline is blocked, it will automatically stop until it is unobstructed. 4. In addition, the diaphragm pump is small in size and easy to move, does not require foundation, occupies a very small ground, and is easy and economical to install. It can be used as a mobile material conveying pump. 5. In the treatment of hazardous and corrosive materials, the diaphragm pump can completely isolate the materials from the outside world. 6. Or ensure that no impurities contaminate the raw materials in some tests. 7. It can be used to transport fluids with relatively unstable chemical properties, such as photosensitive materials, flocculants, etc. This is because the shear force of the diaphragm pump is low and the physical impact on the material is small. Working principle of electric diaphragm pump 1. Compressed air is the driving force. 2. It is a positive displacement pump whose volume changes caused by the reciprocating deformation of the diaphragm. Its working principle is similar to that of a plunger pump. Due to the characteristics of the working principle of the diaphragm pump, the diaphragm pump has the following characteristics: (1) The pump will not overheat: compression When air is used as power, it is a process of expansion and heat absorption during exhaust. The temperature of the pneumatic pump is reduced when it is working, and no harmful gas is discharged. (2) No electric sparks: The pneumatic diaphragm pump does not use electricity for power, and prevents static sparks after grounding. (3) It can pass through liquids containing particles: because it works in positive displacement 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 and out when working, so the agitation to the material is minimal, and it is suitable for the transportation of unstable materials. (5) The flow rate can be adjusted, and a joint can be installed at the material outlet. Flow valve to adjust the flow. (6) It has the function of self-priming. (7) It can run dry without danger. (8) Can dive for work. (9) The fluids that can be transported are extremely wide, ranging from low-viscosity to high-viscosity, and viscous from corrosive. (10) There is no complicated control system, no cables, fuses, etc. (11) Small size, light weight and easy to move. (12) There is no need for lubrication, so it is easy to maintain and will not pollute the working environment due to dripping. (13) The pump can always maintain high efficiency and will not be reduced due to wear. (14) 100% energy utilization. When the outlet is closed, the pump automatically stops, the equipment moves, wears, overloads, and heats up. (15) There is no dynamic seal and easy maintenance to avoid leakage. No dead spots when working.
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