Pneumatic pump manufacturers take diaphragm pneumatic pumps as an example. When compressed air enters the air chamber, it pushes the diaphragm towards the liquid chamber, reducing the volume of the liquid chamber and increasing the liquid pressure. When the pressure reaches a certain level, the outlet valve opens and the liquid is discharged. When the compressed air in the air chamber is discharged, the diaphragm moves away from the liquid chamber under its own elasticity or the pressure of the liquid chamber, increasing the volume of the liquid chamber and forming a low-pressure zone. The inlet valve opens and the liquid is sucked into the liquid chamber. This cycle repeats itself to achieve the transportation of liquids. This working method enables the diaphragm to isolate liquids and gases, avoiding direct contact between liquids and pneumatic components, which is very advantageous for transporting corrosive liquids and liquids containing solid particles.

Pneumatic pumps have excellent self-priming ability, generally capable of self-priming liquids several meters high. Some high-performance pneumatic pumps can self-priming up to 8-9 meters. This is because during startup, the air inside the pump chamber can be smoothly expelled, creating sufficient vacuum to suck in liquid without the need for external pumping operations, making it convenient for use in various complex liquid delivery scenarios.

Pneumatic pump manufacturers introduce specific application cases and roles of pneumatic pumps in various industries

Chemical Industry Cases

In chemical synthesis reactions, pneumatic pumps are used to transport various organic and inorganic raw materials. For example, in the process of producing polyester fibers, it is necessary to transport raw materials such as terephthalic acid and ethylene glycol to the reaction vessel. Pneumatic pumps can accurately control the delivery volume of raw materials, ensuring that the reaction proceeds according to the correct stoichiometric ratio. Meanwhile, pneumatic pumps can also leverage their advantages in handling high viscosity polymer intermediates and reaction liquids containing solid catalysts, ensuring smooth production processes. In the packaging process of chemical products, pneumatic pumps can accurately transport finished liquids (such as various chemical reagents, coatings, etc.) into packaging containers.

Food and beverage industry case studies

On the juice production line, pneumatic pumps are responsible for transporting freshly squeezed juice from the juicer to storage tanks. Due to the presence of fruit pulp particles in the juice, the anti clogging performance of the pneumatic pump ensures the smooth transportation process. During the beverage filling process, the pneumatic pump can accurately deliver the beverage to the filling head according to the filling speed and capacity requirements, achieving efficient and accurate filling. In the cleaning process of food processing, pneumatic pumps can also transport cleaning and disinfection solutions, such as acidic or alkaline cleaning agents used to clean pipelines and equipment, to ensure the hygiene of the food production environment.

Case study of sewage treatment industry

In urban sewage treatment plants, pneumatic pumps are used to transport sewage from the sewage collection pipeline network to primary treatment units such as grates, sedimentation tanks, etc. Wastewater contains various impurities such as sediment, fibers, and plastic fragments. The anti clogging performance of pneumatic pumps enables them to effectively treat this complex wastewater. During the sludge treatment stage, pneumatic pumps can transport sludge from the sedimentation tank to the sludge dewatering machine or sludge digestion tank. Due to the high viscosity and high solid content of sludge, pneumatic pumps can adapt well and complete transportation tasks.

Mining industry case studies

During the mining process, pneumatic pumps are used to transport slurry. The slurry contains a large amount of ore particles, and the powerful power and anti clogging ability of the pneumatic pump enable it to transport the slurry from deep in the mine to the surface beneficiation plant. During the beneficiation process, pneumatic pumps are also used to transport various beneficiation agents, such as flotation agents, inhibitors, etc. Some of these chemicals are high viscosity liquids, while others are suspensions containing solid additives. Pneumatic pumps can accurately transport them to the corresponding positions of the beneficiation equipment, ensuring the smooth progress of beneficiation operations.

Determine the required flow and pressure based on the actual application scenario. For example, in high-pressure cleaning scenarios, it is necessary to choose a pneumatic pump that can provide higher pressure; In scenarios with high flow demands such as irrigation, it is important to focus on models with larger flow rates. Consider the properties of the liquid to be transported, such as whether it contains solid particles, whether it is corrosive, viscosity size, etc. If transporting corrosive liquids, pumps with corrosion-resistant materials should be selected; For liquids containing solid particles, a pump type with strong anti clogging ability should be selected.

By adjusting the pressure and flow rate of compressed air, it is easy to control the output flow rate and pressure of the pump. In general, increasing the pressure of compressed air can improve the output pressure and flow rate of the pump. This flexible adjustment method can well meet the liquid transportation needs under different working conditions, such as adjusting the conveying speed and pressure of raw materials according to the reaction process in chemical production.