Oil-fed gear pump; Lubricating oil pump
Contact Info
- North Section of Industrial Road, Yutai County Economic Development Zone,
- 吴经理
- 13012608150
- 15314489@qq.com
I. Overview of 2CY and KCB Gear Oil Pumps
The 2CY and KCB gear-type oil pumps are horizontal rotary pumps with a flow rate range of 0.045-30 m³/h, a pressure range of 0.7-20 MPa, and an operating speed of 1200-4000 r/min. They are widely used in industries such as petroleum, chemical engineering, shipbuilding, electric power, grain and oil processing, food processing, medical care, building materials, and metallurgy. These pumps are suitable for transporting lubricants or heavy oil, diesel, and lubricating oil with a temperature below 180°C and a viscosity of 5-1500 cSt. When equipped with copper gears, they can transport liquids with low ignition points. Additionally, stainless steel gear pumps can be manufactured to transport beverages and corrosive liquids.
II. Structure of 2CY and KCB Gear Oil Pumps
The 2CY and KCB gear-type oil pumps mainly consist of components such as a pump body, gears, bearing housings, pressure relief valves, bearings, and sealing devices. They are directly connected to the driving motor via an elastic coupling and installed on a common cast iron base. The pump body, bearing housings, and other components are made of gray cast iron, while the gears are made of carbon steel; they can also be made of copper or stainless steel according to special user requirements. The bearing housing is equipped with a stuffing box that serves for axial sealing. For KCB-300～960 type pumps, skeleton sealing devices are used (sealing types can also be replaced as needed by customers, e.g., mechanical seals), and single-row radial ball bearings are adopted. For KCB-18.3～83.3 type pumps, they consist of two oil-resistant rubber rings and a spacer ring in between. The sealing degree is adjusted by two nuts on the compression cover, and copper-based powder oil-impregnated bearings are used. In addition, all pumps in this series can use flexible graphite as stuffing, which has good elasticity, high and low temperature resistance, stable chemical properties, and self-lubricating performance. The pump is equipped with a pressure relief valve. In case of faults in the pump or discharge pipeline, or when the discharge valve is accidentally closed, high pressure and high impact will be generated. The pressure relief valve will automatically open to release part or all of the high-pressure liquid back to the low-pressure chamber, thereby protecting the pump and the pipeline.
III. Working Principle of 2CY and KCB Gear Oil Pumps
This type of pump is equipped with a pair of rotating gears inside the pump body, one driving and one driven. Through the mutual meshing of the two gears, the entire working chamber inside the pump is divided into two independent parts: the suction chamber and the discharge chamber. When the pump operates, the driving gear drives the driven gear to rotate. When the gears transition from meshing to disengaging, a local vacuum is formed on the suction side, and liquid is sucked in. The sucked liquid fills each tooth groove of the gears and is carried to the discharge side. When the gears enter meshing, the liquid is squeezed out, forming high-pressure liquid that is discharged out of the pump through the pump's discharge port.
IV. Model Parameters of 2CY and KCB Gear Oil Pumps
| Machinery & Equipment/Pumps/Gear Pumps | |
