YCB arc gear pump

The YCB circular arc gear pump relies on a pair of active and driven gears with circular arc teeth to mesh and operate, and relies on the alternating volume of the cavity between the teeth to complete the suction and discharge of liquid medium. The equipment adopts a horizontal layout and is suitable for fluid transportation, medium pressurization, lubrication supply and other working conditions.

The main components of the whole machine include the pump body, pump cover, driving shaft, driven shaft, circular arc gear, bearings, shaft end sealing components, and built-in overflow structure. The gear adopts a circular arc curve tooth shape, with a continuous contact area and minimal meshing impact. Gears can be processed through heat treatment. The pump chamber is equipped with a pressure balance channel to reduce the axial force generated during operation and alleviate component wear. The shell material can be selected from cast iron or stainless steel as needed; Insulation jacket can be added for conveying easily solidified media; Copper gears can be selected for specific working conditions. Moving parts rely on self-lubricating transport media and do not require additional independent lubrication systems.

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 as the gears rotate, and the gears mesh with each other to compress the cavity volume. 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 is equipped with a built-in overflow structure. When the pipeline is blocked or the valve is closed, causing an increase in pressure, the medium can flow back inside the pump to relieve pressure and reduce equipment damage caused by high pressure. This structure is only used for emergency protection and is not suitable for long-term stable pressure 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, 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 style can be adapted to viscous, low-temperature and easily solidified media.

Suitable for conveying liquids that do not contain hard particles, fiber impurities, and have fluidity and lubrication characteristics. The medium has a kinematic viscosity range of 5-1500mm ²/s and can transport fluids such as diesel, fuel oil, lubricating oil, and vegetable oil. Not suitable for highly corrosive media, containing a large amount of solid particles, low flash point, volatile and high-risk media.

The equipment is fixed and installed on a base, with standard foot holes reserved, and flange interfaces adapted to conventional industrial pipelines. The installation of couplings requires correction of coaxiality 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 pump chamber should retain the medium 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 tasks include cleaning filters, checking for seal leaks, monitoring operating temperature rise and vibration. After conveying viscous materials, use a clean medium to circulate and flush the pump chamber to avoid material drying and adhesion. Long term shutdown should remove residual media from the cavity to reduce the risk of corrosion and material solidification.

Compared to the involute gear structure, the circular arc tooth profile has smooth meshing, pulsating medium output, and low operating noise. The components have good universality and stable operation, and are mostly used for oil transportation, lubrication and oil supply, and furnace front medium transportation.