Concrete batch mix plant energy saving measures
Concrete batch mix plant are usually applied in building, road, bridge, highway construction and ready mix concrete factory. As an important equipment in construction, the high efficiency and low energy consumption are very significant. After buy concrete batching mixing plant with high quality, the high efficiency can be guaranteed, what are the measures that can be taken to save the energy consumption of concrete batching and mixing plant?
Adopt frequency conversion and soft start technology. From the analysis of energy consumption, the main energy-consuming equipment in the concrete batching plant production system are concrete mixer, aggregate conveying belt conveyor and powder batching screw machine. Taking the common HZ240 commercial concrete mixing station as an example, its main machine is a 4m3 forced double horizontal shaft mixer, the power of the main motor is 2×75kW, and the total power of 2 aggregate conveying belt conveyors is generally about 70kW, and 6 The total power of the powder batching screw machine is about 135kW. Due to the limitation of stirring capacity and conveying capacity, the stand-alone power of the equipment cannot be reduced, so the key to energy saving is to improve the efficiency of the equipment and reduce the loss.
The mixing of concrete is a cyclical process. During the production process, due to waiting for vehicles and changing the ratio, there are often idle waiting situations for the mixer and belt conveyor. In order to reduce the waste of this part, the general concrete batch mix plant requires workers to shut down the equipment in time, but there are too many artificial factors, which often can not achieve practical results. The application of frequency conversion technology can better solve this problem. Based on the detection signal, this technology determines whether the mixer or belt conveyor is idle, and if so, it automatically reduces the speed and reduces energy consumption. When starting production, it immediately turns to working speed.
The batching screw machine generally works in jog mode. The working time is only 10～20s each time, the action is more frequent, and it belongs to a kind of heavy load start, and the start current is larger every time. Using soft start technology can solve the problem of starting current impact, which can protect concrete batch mix plant equipment and reduce energy consumption. It can be seen from this that the "peak and valley" balancing effect of frequency conversion technology and the "stable" start of soft start can effectively reduce the unit energy consumption of concrete production.
