Pneumatic Conveying Pumps:
Positive Displacement Pneumatic Conveying Pump: It is used in dense-phase pneumatic conveying systems. The materials are stored in the pump body of the bin pump. Through compressed air, the materials are made into a fluidized state, and then under the action of air pressure difference, the materials are conveyed to the designated locations through the conveying pipeline. Its characteristics are that it can convey relatively large amounts of powdery or granular materials, and the conveying distance is relatively long. However, the equipment has a relatively large volume and requires certain air source equipment for support.
Ejector Pump: It utilizes high-energy fluid to generate high speed through the nozzle and form a negative pressure to absorb the fluid. It has a simple structure, can operate continuously, has no rotating parts, and has a long service life. However, its nozzle is prone to being blocked by debris, and its efficiency is low. It is suitable for some occasions where the requirements for the conveying volume and pressure are not high, and can be used to convey some small particles or powdery materials.
Screw Pneumatic Conveying Pump: The materials to be conveyed are transported to the mixing chamber in front of the equipment through a high-speed screw. The materials fall into the conveying air flow in the mixing chamber to achieve the purpose of conveying. It has the integrated functions of machinery, electricity, gas, and instruments, and can realize fully automatic operation. It is suitable for conveying various mixtures with different particle sizes and materials with relatively high water content. The conveying pressure is relatively low, and the wear of the pipe wall of the conveying pipe is small.
Positive Displacement Pumps:
Gear Pump: It mainly consists of a driving gear and a driven gear. When the gears rotate, the space between the teeth increases on the suction side to suck in materials, and decreases on the discharge side to extrude materials. It has a simple and compact structure, a relatively wide range of flow rate and pressure, and has a certain tolerance to impurities. It is often used to convey viscous materials such as petroleum, lubricating oil, and ink.
Screw Pump: The screw rotates inside the liner to form sealed chambers. The chambers move axially to convey materials. There are types such as single screw pumps and twin screw pumps. It has good adaptability, can convey high-viscosity materials, has a stable flow rate, and has a strong self-priming ability. It is widely used in industries such as chemical engineering, food, and construction.
Plunger Pump: Through the reciprocating motion of the plunger in the cylinder block, the volume inside the cylinder block increases to suck in materials during the suction stroke, and the volume decreases to discharge materials during the discharge stroke. It has the advantages of high-pressure conveying ability, convenient flow rate adjustment, and relatively high precision. It is suitable for conveying materials with high viscosity and high pressure requirements in industries such as mining and chemical engineering.
Cam Rotor Pump: There is a pair of synchronously rotating rotors in the pump cavity. The space formed between the rotors and the pump casing changes periodically, thus sucking in and discharging materials. It can handle highly viscous materials containing solid particles, has a stable flow rate and pressure, and has a low shear force. It is applied in industries such as environmental protection, medicine, and agriculture.
Centrifugal Pumps:
Slurry Pump: Through the rotation of the impeller, centrifugal force is generated, making a pressure difference when the liquid is sucked in and discharged from the impeller, thus realizing the conveyance of materials. It has a simple structure, operates smoothly, has low noise, and has good sealing performance. It is widely used in industries such as construction, chemical engineering, metallurgy, and mining, and can convey viscous liquids such as cement slurry, mortar, and mud slurry.
Variable Displacement Pump for High Viscosity Materials: It is specially designed for conveying high-viscosity liquids. By adjusting the displacement of the pump, it can adapt to the material transmission with different viscosity and flow rate requirements. It is driven by high-power motors or hydraulic systems. The structure of the pump body is optimized according to the characteristics of high-viscosity materials, and it has the characteristics of variable displacement, good sealing performance, and corrosion resistance. It is applied in industries such as chemical engineering, petroleum, food, and coating.
Other Types of Pumps:
Peristaltic Pump: The elastic hose is squeezed by rollers or pressure blocks to create a negative pressure inside the hose for sucking in liquid. Then, as the rollers or pressure blocks move, the liquid is pushed out. It has the advantages of good sealing performance, low shear force, and easy cleaning. It is often used in industries such as pharmaceuticals, food and beverages to convey high-viscosity materials containing sensitive components or materials with small doses and high precision requirements.
Diaphragm Pump: It uses the reciprocating motion of the diaphragm to suck in and discharge materials. It can be divided into pneumatic diaphragm pumps, electric diaphragm pumps, etc. It has the characteristics of strong self-priming ability, being able to convey corrosive and high-viscosity materials, and simple operation. It is widely used in industries such as chemical engineering, environmental protection, and food.
