Introduction: The KCB type gear pump is mainly composed of gears, shafts, pump bodies, safety valves, and shaft end seals. The gears, after heat treatment, possess high hardness and strength and rotate together with the shafts inside replaceable shaft sleeves. The lubrication of all components inside the pump is automatically achieved during operation by utilizing the output medium.
Purpose
The KCB type gear pump is suitable for conveying oils or other liquids with similar properties that are free of solid particles and fibers, non-corrosive, with temperatures not exceeding 80°C, and viscosities ranging from 5×10^-6 to 1.5×10^-3 m^2/s (5-1500 cSt).
Structural characteristics
This series of gear pumps is mainly composed of gears, shafts, pump bodies, safety valves, and shaft end seals. The gears, after heat treatment, possess high hardness and strength, and operate together with the shafts within replaceable shaft sleeves. All parts inside the pump are lubricated automatically during operation using the output medium. The pump features well-designed oil drain and return slots, which minimize the torque forces experienced by the gears during operation, resulting in lower bearing loads and wear, and higher pump efficiency.
Pumps are equipped with safety valves for overload protection. The full回流 pressure of the safety valve is 1.5 times the pump's rated discharge pressure and can also be adjusted within the allowable discharge pressure range according to actual needs. However, note that this safety valve is not suitable for long-term use as a pressure-reducing valve; an additional installation on the pipeline is required if needed. Viewing from the outer extension end of the main shaft towards the pump, the rotation is clockwise. The performance parameters of various gear pumps are determined at a medium viscosity of 4×10^-3 m^2/s (40 cSt). The parameter values provided in the performance parameter table are applicable within a medium viscosity range of 1×10^-5 to 8×10^-5 m^2/s (10 to 80 cSt); for values outside this range, they are determined separately based on the user's specified performance parameters. The discharge pressure values provided in the performance parameters of various gear pumps are the maximum working pressure values. Within this range, the pump can operate normally, with its operating range shown in Figure 1. The KCB series gear oil pumps are composed of components such as the pump body, front and rear pump covers, gears, main and driven shafts, bearings, safety valves, and shaft end seals. The KCB18.3-83.3 main drive gears consist of a pair of helical cylindrical gears with a direct-acting safety valve. The KCB200-960 main drive gears are a human-shaped gear set composed of four helical gears with a differential pressure safety valve. The entire series of gear oil pumps are equipped with a three-jaw elastic coupling with an electric motor to form a hot oil pump unit. This series of gear oil pumps has a simple and compact structure, is easy to use and maintain, operates smoothly, and is safe and reliable for use.
Application Scope
This type of gear oil pump is suitable for transporting heavy oils, diesel, mechanical oils, vegetable oils, and other similar liquids with viscosities not exceeding 150 mm²/s, temperatures not exceeding 120°C, and free of corrosive properties, hard particle impurities, and fibers.
This type of gear oil pump is primarily used for the transfer, pressurization, and fuel injection of oil media in industries such as petroleum, chemical, metallurgy, mining, and power stations, as well as in the circulating oil system of large-scale machinery and equipment. It can also be used as a lubrication pump in various types of machinery and equipment.
In oil transmission systems, used as transmission and boost pumps; in fuel systems, as fuel pumps for conveyance, pressurization, and injection; and as lubrication pumps in all industrial fields.
