Gear pumps are widely used due to their simple structure, ease of manufacturing, compact size, lightweight design, self-priming ability, and resistance to oil contamination. These features make them suitable for a variety of industrial applications. However, in China, the main drawbacks of gear pumps include unbalanced radial hydraulic pressure, limited bearing life, significant flow pulsation, and high noise levels. Additionally, they are not adjustable in terms of displacement, which limits their versatility.
To address these challenges, the CH and CHY series of gear pumps have been developed as high-quality alternatives. These pumps are designed to handle a wide range of fluids, including those with viscosities up to 200 °E (1500 mPa·s), as well as media containing mechanical impurities and solid particles. They are suitable for transporting turbine oil and other lubricants, with operating temperatures not exceeding 120°C.
The CH and CHY gear pumps are positive displacement pumps known for their reliable performance, smooth oil delivery, low pulsation, high pressure capability, minimal wear, long service life, and broad application range. They also feature a safety valve that provides overload protection, with a set pressure of 1.5 times the rated discharge pressure. This allows users to adjust the system according to their specific needs. However, it's important to note that the safety valve is not intended for continuous operation and can be installed separately if required.
These pumps are extensively used in various industries, including national defense, petroleum, chemical, power generation, metallurgy, transportation, pharmaceuticals, and food processing. Moreover, they can be adapted into specialized versions such as thermal oil pumps, hot oil pumps, asphalt pumps, and corrosion-resistant pumps based on process requirements.
Despite the growing demand, there remains a gap in the domestic market for high-performance gear pumps. As a result, the future outlook for the domestic gear pump industry appears promising. Over the next five years, the development plan aims to increase R&D investment in the pump manufacturing sector to over 6%, with a target of reaching 68% by 2030. This initiative will support the establishment of a vertical pump manufacturing industry centered around modern equipment manufacturing, ensuring sustainable growth and technological advancement.
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