Continued from the previous ......
Environmental protection equipment: There are mainly the following pollution sources, 1Air pollution, 2Water Pollution, 3Noise Pollution1 Air pollution: There are barrel silos, mixing buildings, material storage areas, and road surfaces (dried sewage). Solution: Barrel silo, mixing building: At present, the dust collection equipment used in China is generally the introduction of European technology, and the filter elements are all wrinkled type, which is the mainstream method in Europe. Below is a good reference material, and the following are the specifications of the pulse dust collector that are recommended for the plant
Material storage area: install sprinkler equipment Pavement: Do a good job of all sewage ** and utilization. 2.Water pollution: Everyone focuses on the separation of sand and gravel, and ignores the sewage, after the separation equipment, they do not pay attention to the control of water consumption, but more sewage, and in the end they all fail. We must have the concept of "garbage reduction", since it will produce pollution, we should reduce pollution. As long as the total amount of pollution sources is controlled and the amount of sewage is predictable, then the sewage can be treated very effectively. Control means: Special drainage ditch: 90% of the sewage generated by the mixing plant contains mud, when the sewage enters the drainage ditch, the result is that the drainage ditch is blocked, and then the sewage overflows, and then exposed to the sun, every time the wind or vehicles pass, the dust generated is a lot. Fixed cleaning point: The cleaning action of all vehicles, in conjunction with the vehicle moving line, must be in a fixed place, and then centralized processing and utilization. Concentration of production sewage: the sewage generated by the mixing building is also a lot of quantity, and the sewage generated in the production process is treated and utilized in a centralized manner. 3.Noise pollution: Forklift: Forklift is a big source of pollution, the noise value of the general domestic model is really large, in addition to replacing the imported low-noise forklift (such as Japan's Komatsu's WA, WB series), it is nothing more than the use of high-tower or half-height tower type mixing building (pit feeding) to reduce the use of forklifts. Air pressure system: The air compressor can adopt a fully enclosed means, air pressure components, and install silencers at all exhaust ports. Others: such as the sound of the vehicle horn, the speed of the vehicle, the unloading of the dump truck, etc., which are all management problems and will not be described in detail here. Energy saving and consumption reduction: 90% of the power of the mixing plant** is driven by electric reducers, such as belt conveyors, screw conveyors, which are also part of the noise**. It is recommended to use planetary reducer, because under the same electric power, a larger torque can be obtained, that is, a motor with a smaller power can be used, and at the same time, because the planetary reducer has the advantage of being relatively compact in structure, small return clearance and high precision, so the noise part can also be appropriately reduced. In the part of the mixing host, in order to meet the needs of the market, the current commercial concrete is developing towards high mobility, that is, the collapse degree is 160cm to 180cm, or even higher. Under this trend, the stirring host should pay attention to the stirring efficiency, not the stirring power, so the high-power motor of the host is not absolute, as for why the smaller power can get a good stirring efficiency, this is another problem, involving the selection of the host and the equipment process, which will not be described in detail here.