From the perspective of production and marketing, the production and marketing of the whole industry is relatively balanced. China's gear pump should be strengthened and improved in the following points.
The most basic form of gear oil pump is that two gears of the same size mesh and rotate each other in a closely matched shell. The interior of this shell is similar to "8" shape, and two gears are installed inside, and the outer diameter and both sides of the gear are closely matched with the shell. The material from the extruder enters between the two gears in the suction inlet and fills the space, moving along the housing as the teeth rotate, and finally being discharged when the two teeth engage. In 2008, the overall output of Gear pumps in China was roughly 3.7 million pieces, and the output from January to August in 2009 was 2.6 million pieces. Especially with the improvement of China's host level, gear pump behind the host of the bottleneck phenomenon is increasingly apparent. In the next 5 ~ 10 years, the industry will strive for great progress and breakthrough in developing brand products and famous brand enterprises, carrying out technological innovation, improving the competitiveness of domestic and foreign markets and strengthening intensive management.
Because our country is familiar with the important position of oil pump in the machinery industry late, lack of investment for a long time, resulting in the poor foundation, weak foundation and weak strength of the whole industry.
1. Strengthen technical input
Due to China's poor foundation, a thin foundation, less investment in science and technology, weak development force, can not adapt to the host industry introduction, joint venture, cooperation, rapid development needs, leading to a decline in the domestic market share of gear pump.
Therefore, in order to improve the market competitiveness of China's gear pump products, to better meet the needs of China's machinery industry for domestic base parts, it is expected that China's base parts industry is facing further adjustment, in order to integrate superior resources, eliminate backward enterprises. Therefore, Chinese gear pump enterprises and relevant departments should increase investment in gear pump technology research.
The gear pump is driven by an independent motor, which can effectively block pressure pulsation and flow fluctuation in the upstream.
2, the lack of national gear pump industry strong policy support
Although the state has made clear the key support for important gear oil pumps in terms of industrial policies, it lacks the support of corresponding supporting policies. For example, the tax burden of the mold industry is too heavy, and there are only less than 100 enterprises enjoying partial VAT refund in the country, which is too narrow and plays a limited role, and further policy support is needed. Using a gear pump in the extrusion line can improve the output speed of flow, reduce the shear and residence time of materials in the extruder, reduce the extrusion temperature and pressure pulsation to improve productivity and product quality. The pressure pulsation at the pump outlet can be controlled within 1%. In recent years, although the state has given some support to technology introduction, technological transformation, scientific research and development, there is still a big gap compared with the current market demand and foreign level, which is manifested in: product varieties are few, the level is low, the quality is unstable, the early failure rate is high, the reliability is poor.
