A Brief Discussion on the Practical Application and Lubrication Methods of YCB G

YCB gear pump is sent to the ship to replace the Japanese pump, with a flow rate of 0.6 cubic meters per hour and a pressure of 1.0 Mpa. The circular arc gear pump mainly consists of gears, shafts, pump bodies, valves, and shaft end seals. Gears have high hardness and strength after heat treatment, and are installed together with the shaft in a replaceable shaft sleeve for operation. The lubrication of all parts inside the pump is automatically achieved through the use of the output medium during pump operation.

YCB gear pump is equipped with a valve as overload protection, and the full reflux pressure of the valve is 1.5 times the rated discharge pressure of the pump. It can also be adjusted according to actual needs within the allowable discharge pressure range. However, please note that this valve cannot be used for long-term operation as a pressure reducing valve. If necessary, it can be installed separately on the pipeline.

YCB gear pump is a rotary pump that uses the change and movement of working volume formed between the pump cylinder and the meshing gear to transport liquid or increase its pressure. Therefore, circular arc gear pump is a type of positive displacement pump, and its use brings hope to China's chemical, petroleum, aviation, aerospace and other industries.

The YCB gear pump adopts a point continuous contact gear, which is considered to be superior to the conveying pump, that is, a double arc combined with a sine curve to form a tooth profile, which can eliminate the involute gear conveying pump. Has won major scientific and technological achievement projects and the third prize for scientific and technological progress from the Education Commission. The circular arc gear has a continuous contact point between the two meshing tooth profiles, which does not cause oil entrapment and solves the problems of vibration, noise, and increased bearing load caused by oil entrapment in involute gear pumps. Therefore, the circular arc gear pump has high efficiency, low noise, and energy-saving effect.

The circular arc gear pump mainly consists of gears, shafts, pump bodies, pump covers, bearing sleeves, shaft end seals, etc. The gear adopts a double arc sine curve tooth profile. Compared with involute gears, its prominent advantage is that there is no relative sliding of the tooth profile during the gear meshing process, so the tooth surface is not worn, the operation is smooth, there is no liquid phenomenon, the noise is low, and the service life is long,. This pump breaks free from traditional constraints, ushering in a new era in the production and use of gear pumps.

The prominent feature of YCB gear pump is the change in the volume of the pump cylinder and meshing gear, which is very valuable. It not only enables the circular arc gear pump to achieve multifunctional value, but also brings inspiration to future gear pumps. In this competitive era of the 21st century, the future that gear pumps want is constantly breaking through.

YCB gear pumps belong to involute gear pumps, with helical teeth. The gears have undergone nitriding heat treatment to obtain strong hardness and hardness. In addition, KCBYCB series gear pumps are equipped with protective valves to protect the motor from overload. The valves have been adjusted to the standard state before leaving the factory, so there is no need to adjust them during use. YCB type YCB gear pump belongs to circular arc YCB gear pump, with a circular tooth shape, so it can achieve the advantages of medium, no trapped liquid, and low noise during the conveying process.

The YCB gear pump has two types of internal components: sliding bearings and rolling bearings. Choosing between the two types of pumps based on different operating conditions can prolong their service life, but there are also differences in price.

1. Lubrication of rolling bearings

The lubrication method of gear pump bearings using rolling bearings, some use high-pressure oil leakage from the end clearance to the bearing chamber, while others use low-pressure lubrication connected to the oil suction chamber.

2. Lubrication of sliding bearings

The lubrication method of sliding bearings using bimetallic thin-walled bearings and DU bearing press fit structure is mainly based on adding straight grooves or spiral grooves in the bearing inner hole.

The gear shaft consists of a long drive shaft and a short driven shaft, and the gear sleeve and shaft are integrated; The gear is a involute cylindrical spur gear; The number of teeth is 14; The material of the gear shaft is high alloy tool steel. There is an integral sliding bearing at both ends of the long and short axes of the sliding bearing. The lubrication of the bearing is achieved by the molten material itself: there are two longitudinal grooves of width and one circumferential groove of about one-third of the circumference on the inner diameter surface of each bearing. One longitudinal groove and one circumferential groove of about one-third of the circumference are located on the outlet side of the pump and are connected to the high-pressure molten material on the outlet side through a D8mm through-hole; Another longitudinal groove is located on the side of the pump and is connected to the low-pressure melt on the side through a D6mm through-hole. In theory, each bearing can form a lubrication channel during operation, and the melt is introduced into the journal gap through the pressure difference between the outlet and the side, thereby establishing a load-bearing lubrication film and preventing dry wear from causing the bearing and journal to bite.

Rolling bearings have many advantages, such as low resistance, small difference between static and dynamic friction coefficients, and less susceptibility to vibration. Long lifespan. But the noise is loud, requires cleanliness of the environment, and cannot withstand impact and vibration.

Sliding bearings are commonly used in unimportant places or places that require short-term operation. It can be made by copper powder metallurgy or directly from copper material, with a simple structure, low working noise, and impact resistance.

YCB gear pump - adopts double arc sinusoidal arc gear, which enhances the oil pump's wear performance on the basis of basic conveying performance. The service life of this pump is 3-5 times that of ordinary oil pumps, and it also has good noise reduction performance and no trapped liquid performance. The 2CY high-pressure YCB gear pump also belongs to the involute gear pump, but its tooth profile is positive. Therefore, during the meshing process, the contact area between the gear teeth is large, resulting in a high-pressure state. The pressure can reach 2.5MPA, which means the head can transport a height of 250 meters. The common characteristics of YCB gear pumps are small size, easy operation, disassembly and maintenance. Due to the different media conveyed by our customers, our YCB gear pumps can be customized with stainless steel material and performance.