TB type light and heavy fuel booster pump

The TB type light and heavy fuel booster pump is a volumetric gear boosting and conveying component designed specifically for the fuel supply conditions in front of industrial combustion systems. It is compatible with the transportation needs of low viscosity light diesel oil, medium and high viscosity fuel oil, and heavy diesel oil. It is divided into ordinary room temperature models and jacket insulation models, with optional configurations. The supporting asphalt mixing plant, industrial boiler, heating furnace, and combustion device burner booster oil supply system are also suitable for fuel tank transfer and fuel pre-treatment transportation processes. The equipment supports 24/7 continuous pressurized oil supply, adapts to periodic start stop intermittent operations of production lines, and can be matched with a variable frequency control system to achieve automatic pressure regulation.

The entire unit consists of a pump body, thickened front and rear pump covers, heat-treated alloy master and slave gears, quenched and tempered transmission shaft, floating composite thrust plate, shaft end sealing components, and built-in reflux valve to form a conveying unit. The whole machine adopts a five piece precision assembly structure without gaskets, relying on positioning pins and O-rings for sealing, abandoning the traditional gasket gap adjustment process, and ensuring good sealing performance; The gears have undergone chemical treatment and possess anti scouring properties, which can withstand trace amounts of gum impurities inside the fuel. Multi channel axial force balance flow channels are arranged in the cavity to fully offset the unidirectional thrust generated by gear operation under boosting conditions, reduce unilateral wear of the thrust plate, and ensure smooth operation under both high and low speed conditions, with vibration and noise control. The internal moving components rely on the self lubrication of fuel delivery, without the need for additional independent lubrication oil circuits, simplifying the layout of on-site pipelines. The insulation style pump body and pump cover are integrated with a surrounding insulation layer, which can be continuously heated by steam and heat transfer oil to avoid heavy oil cooling agglomeration and gear jamming after shutdown.

After the device is connected to the driving power, the motor drives the gear to rotate synchronously and uniformly through the elastic coupling. The volume of the cavity on one side of the gear teeth disengages and continues to expand to form negative pressure. The oil inside the fuel storage tank is filled into the gap between the gear teeth through a widened and smooth oil inlet channel. As the gears continue to rotate, the grooves carry the medium to the oil pressure area, and the gears re engage with the compression chamber volume. The fuel forms a stable pressure and is transported to the burner pipeline. The entire process of suction, transfer, pressurization, and discharge runs continuously in a cycle. The pump body adopts a smooth flow channel without dead corners, which balances the efficiency of light diesel circulation and the characteristics of high viscosity heavy oil transportation. The flow pulsation amplitude is small, the fuel supply pressure of the burner is continuously stable, and the fuel is fully atomized and burned.

The pump body is integrated with a built-in reflux valve, which is responsible for short-term overload protection and has a preset opening pressure at the factory. When the outlet pipeline is bent and blocked, the valve is closed, and the pressure inside the chamber exceeds the rated range, the valve automatically opens, and some medium flows back to the oil suction chamber to release high pressure, reducing the damage of pressure impact to the pump body, fuel pipeline, and burner nozzle. This structure is only suitable for temporary protection in case of sudden blockage and cannot be used as a stabilizing device for a long time. If the working conditions require stabilizing control, independent pressure regulating accessories can be installed in the external pipeline to work together. The inner wall of the pump body has been smoothed to reduce the adhesion and accumulation of gum and carbon deposits, thus delaying the problem of decreased volumetric efficiency caused by long-term operation. The device has self-priming capability, requiring only a small amount of medium to be pre filled into the chamber for initial startup, simplifying the startup operation process.

The sealing matching can be selected based on the temperature of the medium and the viscosity of the oil, using either packing seals or hard alloy mechanical seals. Select anti swelling sealing accessories for low viscosity diesel transportation conditions; Select sealing components for high-temperature and high viscosity heavy oil operating conditions. The sealing component tightly fits the gap between the transmission shaft and the pump cover, reducing the risk of fuel leakage under pressure conditions, while blocking dust and water vapor from entering the cavity to prevent hard impurities from scratching the gear tooth surface. Modular assembly makes maintenance easy, without the need to disassemble the pump body as a whole. Only the outer pump cover can be removed to replace the seal, shortening the downtime of the production line. The temperature of the conventional sealing medium should not exceed 200 ℃, and special sealing components can be upgraded for continuous high temperature conditions.

At the medium adaptation level, the TB type light and heavy fuel booster pump is suitable for transporting fuel media that do not contain hard metal particles, long fiber impurities, and have lubricating properties. The medium's kinematic viscosity range is 5 to 1500mm ²/s, and it is suitable for industrial fuel categories such as light diesel, heavy diesel, and fuel oil. Cast iron models are suitable for clean and low viscosity diesel transportation; Steel casting insulation models are preferred for high viscosity heavy oil pressurized transportation; Optional motor units can meet the oil supply needs of mixing stations and chemical workshops. The equipment is not suitable for transporting highly corrosive and volatile media with flash points. Metal components in contact with the medium have undergone rust prevention treatment, making them suitable for outdoor dusty and temperature sensitive working environments such as boiler rooms and asphalt mixing stations.

In terms of installation and matching, the horizontal base of the whole machine is reserved with standard anchor fixing holes, and the installation is stable on the ground. The inlet and outlet can be flexibly adjusted according to the layout of the fuel pipeline, and the large-diameter interface reduces the resistance of medium transportation. The power end is equipped with an elastic coupling, and the coaxiality is strictly calibrated during the assembly process to buffer hydraulic impact under pressure boosting conditions and reduce unilateral wear of the transmission shaft. Install a large area pre filter on the suction pipeline, with a flow area larger than the cross-sectional area of the inlet pipe, to intercept impurities from the bottom of the storage tank and prevent damage to the gear tooth surface; All pipeline joints are equipped with oil resistant sealing gaskets to prevent air from infiltrating the chamber and causing fluctuations in oil supply pressure. Before starting, check that the motor direction is consistent with the pump body identification; When transporting high viscosity fuel with insulation models, priority should be given to preheating the pump body with a heat source. It is prohibited to forcibly start the pump when the medium is solidified, and it is also strictly prohibited to fully close the outlet valve and operate it under pressure for a long time.

At the level of daily maintenance operations, the pump body adopts a modular assembly, and the alloy gear, composite thrust plate, seal, and pump cover can all be separated and removed separately. General and simple tools can be used to complete the disassembly, making it easy to regularly clean the carbon deposits and gum impurities inside the cavity, and check the wear status of the gear and thrust plate. The meshing force of the gears is balanced, and the overall vibration amplitude of the machine is low. With the use of shock-absorbing gaskets, the operating noise is controllable, and it is suitable for the uninterrupted boosting and oil supply mode of the production line throughout the day. Maintaining the cleanliness of the inlet filter on a daily basis, regularly checking for seal leakage, controlling the temperature range of the medium, avoiding long-term overload operation of the equipment, and adjusting the clearance as needed when pressure decreases can prolong the service life of gears and sealing accessories and reduce the frequency of unplanned shutdowns on the production line. After a long-term shutdown, the insulation machine continues to maintain the temperature of the chamber while emptying the residual high viscosity fuel in the pump to prevent the medium from cooling, solidifying, and jamming the gear components.

During long-term use, the equipment failure rate is relatively low. As long as we adhere to media pre filtration, regular quarterly inspections, and standardized start stop operations, the core components can maintain stable pressure boosting and oil supply conditions for a long time. There are no large areas of dead corners in the internal flow channel. After shutdown, a clean fuel circulation flushing chamber is introduced to reduce the problems of insufficient boost and flow decline caused by the accumulation of gum carbon, reduce the frequency of disassembly and cleaning of the whole machine, and ensure the stable operation of the entire fuel combustion system.

Overall, the TB type light and heavy fuel booster pump relies on a five piece precision structure, alloy gears, and a full range hydraulic balance system. It can be equipped with jacket insulation and configuration, and has a built-in high-pressure overload valve. It is suitable for high and low viscosity industrial fuel boosting and transportation, with stable output pressure. It is specifically designed for fuel boosting and supply conditions in asphalt mixing stations and industrial boiler combustion systems, and can meet the basic needs of long-term continuous and stable pressure boosting and transportation of light and heavy fuel on production lines.