crusher and for drying

Building materials constitute the material basis of buildings and structures, along with the social production and development of materials science and development, development of human society along with the material history of the invention and development. Road and bridge construction is an important part of civil engineering, road construction materials for roadbed, road surface, bridges, tunnels and other parts of the various components and structures and ultimately form the building material. With the start of large-scale road construction, road building materials to use and increasingly rapid pace of development, although the traditional building material widely used in basic engineering, but are increasingly unable to meet the rapid development of highway construction on the high standard engineering requirements. Road works in the contemporary construction, cement concrete, steel, reinforced concrete and asphalt and asphalt concrete, although the structure of materials can not be replaced,hose assembly and new alloy materials, organic materials, new geotextile materials, chemical building materials and various composite materials, also holds very important position.
The solid materials are crushed building materials, the internal crystal structure is changed, the surface can increase its surface area per unit mass also increased, to increase the rate of physical and chemical reactions, easy to mix evenly, to improve both the effects, and for drying, create favorable conditions for storage and transport. Impact crusher,capping machine hammer crusher is the basis to develop. Impact crusher is used in industrial production in 1924. And the hammer broke, as are the impact energy to crush the material of broken machinery, the working principle and performance of the structure have many similarities. Dawn Heavy counterattack hammer crusher and the rotor is rigid, with a broken chassis hit by Yang crusher hold angle.
However, from April data shows that the boom of construction machinery fell, with the exception of concrete machinery, other product sales of the chain are different degrees of decline. CITIC Securities expects the economy of construction machinery will continue to fall. Therefore,hose assembly CITIC Securities temporary industry-wide growth in 2011 remain high to low, and annual growth rate of 25% of the judgments made at the same time, such as the May release of data to lower than expected industry growth rate will be reduced and some of the expected performance of listed companies .
Machinery industry in the past 20 years, the major external driving factors for export,container hotel heavy industrialization, upgrading internal factors caused the manufacturing, import substitution. Machinery industry in the past 20 years is the most successful and port container crane, the most successful over the past 10 years of engineering machinery, large vessels, large-scale power generation equipment, mining machinery, the most successful over the past 5 years is the high-speed rail equipment, complete sets of metallurgical equipment, nuclear power equipment. In addition to benefiting the export port machinery, the other benefit from the rapid re-industrialization process.
Fans, pumps and other equipment through the traditional method is to adjust the speed control import or export of the baffle, valve opening to adjust to the wind and to water, the input power, and a lot of energy consumption in the baffle, valve closure process. When using frequency control, if the traffic demand decreases, by reducing the pump or fan speed to meet the requirements. We can see from the fluid, P (power) = Q (flow) × H (pressure), flow Q N with a speed proportional to the pressure and the speed N H proportional to the square, the power P and the speed is proportional to the cube of N If the pump efficiency will, when asked to adjust the flow rate decreases, the rotational speed N can be decreased in proportion,plunger pump axis of the output power P at a time when relations between the establishment side drop. The power consumption of the pump motor and the speed ratio between the cubic approximation. The force required when the flow Q decreases, the inverter output frequency can be adjusted so that the motor speed n proportionally lower. At this time, motor power P will be reduced substantially cubic relationship, than adjust the damper, the valve of a 50% 40% saving, so as to achieve the purpose of saving energy. Yi Electric Co., Ltd. to full production of the drive applied to the fan pump type load the example of energy saving: a centrifugal pump motor power is 55 kilowatts, when the speed dropped to the original speed of the 4 / 5, the power consumption of 28.16 kilowatts, saving 48.8%, when the speed dropped to the original speed of l / 2, its power consumption is 6.875 kilowatts, saving 87.5%.