Feeding Principle of Gear Pumps, etc.：Continuous feeding is achieved by using gear pumps, screw pumps or rotor pumps. The constant pressure of the oil circuit is maintained through overflow pressure stabilization, and filling with different measurements is realized by controlling the filling time. At the beginning of filling, high - volume and high - speed filling is carried out. When approaching the target filling volume, the reflux valve opens, allowing part of the lubricating oil to flow back to the raw material tank, slowing down the flow rate of the filling head and preventing the lubricating oil from overflowing from the container.
Weighing Principle：The filling container is weighed in real - time through a weighing sensor. When the set filling weight is reached, the control system will close the filling valve and stop filling.
Driving Device：Usually, a motor, such as a servo motor, is used as the power source. Through the transmission device, the rotational motion of the motor is transmitted to the execution components such as the filling pump.
Filling Pump：It is the core component, such as gear pumps, plunger pumps, etc., responsible for extracting and transporting lubricating oil.
Liquid Storage Tank：It is used to store the lubricating oil to be filled. Generally, it has a large capacity to ensure continuous filling.
Filling Head：It can be designed in different forms such as oblique - injection, direct - injection, inserted, and suspended types to adapt to lubricating oils with different characteristics and filling requirements.
Control System：Generally, a PLC control system and a touch - screen human - machine interface are adopted. Parameters such as filling volume and filling speed can be set, and the operating status of the equipment can be monitored in real - time.
High - precision Filling：For example, by using high - precision volumetric flow meters or weighing sensors, the filling error can be controlled within a very small range.
High - efficiency Performance：Multiple filling heads can be equipped to work simultaneously. The filling speed is fast, which can meet the needs of large - scale production.
Leak - free Design：Some use drip - proof filling heads and designs such as a suction - back system to ensure that the production site and packaged products are not contaminated by the liquid material.
High Adaptability：It can adapt to lubricating oils with different viscosities and is compatible with various specifications and shapes of packaging containers.
It is mainly applied to the large - scale production lines of lubricating oil production enterprises to achieve efficient and accurate filling, ensuring product quality and production efficiency. It can also be used by some related enterprises that need to fill lubricating oil, such as automobile repair shops and mechanical processing plants, for small - batch filling of self - used lubricating oil
