KCB series gear pump

The KCB series gear pump relies on a pair of interlocking driving gears and driven gears to operate, and uses the alternating changes in the volume of the interdental cavity to complete the suction and discharge of liquid medium. The equipment adopts a horizontal structure, supports long-term continuous operation, and can also be intermittently started and stopped. It is mainly used for oil transportation, medium pressurization, and equipment lubrication related working conditions.

The main components of the whole machine include the pump body, pump cover, driving shaft, driven shaft, gears, bearings, shaft end sealing components, and built-in overflow structure. The gears have undergone heat treatment and the meshing state is stable. The pump chamber is equipped with a drainage and return oil channel to balance the axial force generated during operation and reduce the bearing friction load. The shell material can be cast iron or stainless steel; Insulation jacket can be configured for conveying easily solidified media; Copper gears can be selected for specific working conditions. The internal moving components rely on the self lubrication of the conveying medium and do not require an independent lubrication system.

The power is driven by the coupling to rotate the driving gear, and the driven gear rotates synchronously in the opposite direction. The gear disengages from the meshing area, the cavity volume expands to form negative pressure, and the medium enters the tooth groove; The medium reaches the oil pressure area with the rotation of the gear, and the gear mesh compresses the volume of the cavity. The medium is compressed and transported outward, achieving continuous feeding through circulation. The flow rate is linearly related to the rotational speed, and when combined with a speed control device, it can adjust the conveying volume. The equipment has basic self-priming ability and can be repeatedly started and stopped after the initial injection of medium.

The pump body comes with a built-in overflow structure. When the pipeline is blocked or the valve is closed, causing abnormal pressure rise, the medium can flow back inside the pump to relieve pressure and reduce structural damage caused by high pressure. This structure is only used for emergency overload protection and is not suitable for long-term voltage stabilization operations. If there is a need for constant pressure transmission, an external pressure regulating pipeline can be connected. The pump chamber flow channel is unobstructed, with fewer dead corners inside, making it easy for daily flushing and cleaning.

The sealing form can be selected based on the temperature and corrosion characteristics of the medium, such as packing seal and mechanical seal. The whole machine adopts a split assembly structure, and during maintenance, the pump cover can be disassembled to replace the seals, check the status of gears and bearings, without the need to dismantle the pipelines as a whole. The insulation modification style can be adapted to transport viscous, low-temperature and easily solidified media.

Suitable for transporting liquids that do not contain hard particles, fiber impurities, and have flowability and lubrication properties. The medium has a kinematic viscosity range of 5-1500mm ²/s, and can transport diesel, fuel oil, lubricating oil, vegetable oil, and weakly corrosive liquid raw materials. Not suitable for the transportation of highly corrosive media, media containing a large amount of solid particles, and media with low flash points and high risks.

The equipment is fixedly installed on a base, with standard foot mounting holes reserved, and flange interfaces adapted to conventional industrial pipelines. Correct coaxiality during coupling assembly to reduce vibration wear. It is recommended to install a filtering device in the suction pipeline to prevent impurities from entering the pump chamber. Before starting, the medium inside the pump chamber needs to be retained, and it is forbidden to idle for a long time. The pump body equipped with insulation structure can preheat the chamber before transporting easily solidified materials.

Daily maintenance items include regular cleaning of filters, inspection of seal leaks, monitoring of operating temperature rise and vibration. After conveying viscous materials, use a clean medium to circulate and flush the pump chamber to prevent the materials from drying up and adhering. Long term shutdown should remove residual media from the cavity to reduce the risk of corrosion and material solidification.

The equipment components have strong universality, stable operation status, and moderate maintenance workload. They are commonly used in fuel transfer, furnace front fuel supply, lubrication system fuel supply, and other working conditions.