Here are some common pumps for oil filling machines:
Working Principle: Through the reciprocating motion of the plunger inside the pump cylinder, the working volume of the pump cylinder changes, thus realizing the processes of liquid suction and discharge and achieving the purpose of precise metering and liquid delivery.
Advantages: It has high filling accuracy. Different numbers of filling heads and pump body specifications can be selected according to the actual production volume. The structure adopts a quick-connection disassembly mechanism, which is convenient for cleaning and disinfection. The material of the piston ring can be selected according to different industries and liquid components, and it is suitable for filling low-viscosity liquids and aqueous solutions.
Application Cases: It is widely used in liquid packaging in industries such as pharmaceuticals, pesticides, chemicals, food, and cosmetics. For example, it is used for filling liquid medicine in some pharmaceutical factories.
Working Principle: During the linear motion of the piston, the volume of the chamber on one side increases to form a negative pressure for liquid suction, and the volume of the chamber on the other side decreases to discharge the liquid. Through this reciprocating motion, the liquid is transported and filled.
Advantages: It is simple to operate, has relatively high filling accuracy, can better transport and quantitatively fill liquids with a certain viscosity such as lubricating oil, has good equipment stability, and relatively low maintenance costs.
Application Cases: It is commonly used for filling large or small barrels in industries such as lubricating oil and coatings. For example, some lubricating oil manufacturers use it to fill lubricating oil into 20-kilogram barrels.
Working Principle: Utilizing the working principle of the magnetic coupling, the power of the motor is transmitted to the pump shaft to drive the impeller to rotate, realizing the liquid transportation. There is no mechanical seal, effectively preventing leakage.
Advantages: It has good sealing performance, can avoid pollution and waste caused by oil leakage, operates smoothly, has low noise, is suitable for filling places with high environmental requirements, has contactless magnetic drive, reduces component wear, and has a long service life.
Application Cases: It is applied in some oil production enterprises with high requirements for filling accuracy and environmental hygiene, such as manufacturers producing high-end automotive engine oil.
Working Principle: Relying on two rotors that rotate synchronously and in opposite directions, during the rotation process, a sealed cavity is formed with the pump casing, continuously pushing the liquid from the suction port to the discharge port to realize the liquid transportation.
Advantages: It can transport high-viscosity engine oil, such as diesel engine oil, etc. It has a stable flow rate, small pulsation, little shearing effect on the liquid, can effectively protect the performance of the engine oil, has a compact structure, and occupies a small space.
Application Cases: It is used for filling high-viscosity engine oil products, such as gear oil and heavy oil, in places such as lubricating oil production plants and automobile repair shops.
Working Principle: A pair of meshing gears rotate inside the pump casing. The side where the gears disengage forms a suction chamber to suck in the engine oil, and the side where the gears engage forms a pressure chamber to squeeze out the engine oil. Through the continuous rotation of the gears, the continuous processes of oil suction and pressure are realized.
Advantages: It has a simple structure, is reliable in work, can adapt to relatively high working pressures, can be used for filling engine oil with relatively high viscosity, and its output flow is proportional to the motor speed, which is convenient for adjusting the filling speed.
Application Cases: It is commonly used in some engine oil filling equipment that requires high-pressure filling or has certain requirements for filling speed, such as in the filling production lines of some large industrial lubricating oil production enterprises.
