With the construction of a beautiful China, the country pays more and more attention to the construction of ecological civilization. At present, domestic waste treatment is gradually changing from backward open-air landfill to advanced factory incineration, with smaller and smaller area, higher and higher treatment efficiency and stricter environmental protection requirements. In addition to management factors, the key factor for the successful operation of waste incineration plant is waste incineration equipment. The advancement of waste incineration equipment is inseparable from advanced mechanical technology (design, manufacturing, installation, operation and maintenance). As a person engaged in waste incineration related work, he must have a comprehensive knowledge of mechanical technology in order to understand the core role of mechanical technology in waste incineration equipment and pay attention to the application of mechanical technology in waste incineration equipment, so as to ensure the safe and stable operation of all links of waste incineration equipment.
1. Application of mechanical technology in waste incineration equipment
Waste incineration equipment is the main production equipment serving waste incineration enterprises. Only with the support of advanced mechanical technology can we ensure the quality and quantity of incineration equipment, the safe and stable operation of waste incineration equipment and the healthy and sustainable development of waste incineration enterprises. The specific application of mechanical technology in waste incineration equipment is mainly reflected in two stages:
(1) Installation phase. This stage is the concentrated embodiment of the transformation of design achievements and other theories into practical achievements. First, check and accept all kinds of equipment according to the design, then organize professional technicians to install the equipment according to the process requirements, and finally carry out commissioning, trial operation and formal operation. During equipment installation, there are embedded parts, on-site production parts, large-scale equipment hoisting, high-altitude operation, on-site test, civil side installation, civil re installation, etc., and there are often design changes, re optimization, etc. Many people, many things, many materials and many equipment are often the most important stage of progress control, quality control and safety control, which requires professional technical knowledge as support.
(2) Design phase. The main task of this stage is to convert the actual needs of customers (such as scale, process, service life, environmental requirements, functions of various components, etc.) into product demand documents and drawings, including social investigation, overall design, component design, scheme demonstration, scheme optimization, equipment selection, material selection and other professional work. Design is the leader of engineering construction. First of all, we should clarify the basic problems and scope of application of waste incineration equipment, such as working principle, quality standard, etc. Because once a part of equipment often fails, it will affect the normal operation of the whole equipment system, not only cause economic losses, but also endanger personal safety. At the same time, in the design stage, we should not only fully consider the existing mechanical technology, but also look forward to the future technology, which should not only ensure the advanced technology today, but also facilitate the upgrading in the future.
2. Examples of mechanical technological innovation promoting technological innovation of waste incineration equipment.
During the operation of the incinerator, it is found that the roller of the movable grate beam is easy to jam, especially the roller under the first grate, which needs to be replaced every half a year or so. After analysis, it is caused by the following reasons: after considering the wear of grate unit in the initial design, the grate beam should move from both sides to the middle to eliminate the gap caused by wear. Therefore, when the movable grate beam is initially installed, it is misaligned with the roller, leaving a displacement. This displacement increases on both sides, and some areas of the roller are already outside the movable beam. After running for a period of time, the roller is stuck and cannot rotate due to corrosion, but the grate beam still rubs back and forth on the roller. Soon, the part in contact with the grate beam is ground flat, while the part not in contact with the grate beam remains circular arc. In this way, the roller forms a step, and the grate beam can no longer move to the middle. After the roller is ground flat, the movable beam sinks and the running resistance increases. These factors are very unfavorable to the stable operation of the equipment.
The wheel device is easy to jam. The main reason is that the flange end of the roller is exposed, which is easy to be blocked by the ash falling from the grate. The ash is highly corrosive, and the shaft, bearing and roller are quickly corroded and stuck. And the bearing is not self-lubricating, which is also the reason for easy jamming. In view of the above problems, we have improved the structure and installation position of the roller device:
1、 Bosses are machined on both sides of the roller to protect the bearing
2、 Reduce the initial displacement between the roller and the movable grate beam, and install the roller completely under the movable grate beam.
3、 Add self-lubricating function to the bearing;
After the improvement, the service life of the roller is extended by 2 or 3 times, and it is replaced only once a year to two years, which greatly reduces the maintenance times, saves the operation cost and improves the stability of the grate operation.
With the development of science, technology and society, incineration has become a typical, advanced and extensive waste treatment method, and its economic and social benefits are becoming increasingly prominent. As an important part of the garbage incineration plant, the advanced nature and safety of the refuse incineration equipment is attracting more and more attention. In order to effectively improve the efficiency of waste incineration equipment, in addition to necessary training for relevant personnel, strict requirements for mechanical operation are required. Improving mechanical technology is a long-term and effective means. The improvement of mechanical technology can make waste incineration equipment adapt to the development of the times and the development of waste incineration industry, conform to the current economic situation and further promote the development of national economy.
（Some articles on this site are collected from the network, such as infringement contact deletion）