Project background:
Our company has been committed to the development and production of road sweepers all year round. In the sanitation industry, leaf cleaning in autumn is a common problem faced by managers and sanitation workers. The street trees on both sides of my country's roads are mainly French sycamore trees, which are characterized by large leaves, many leaves, and long falling leaves. Throughout the autumn, a lot of manpower is needed to clean the fallen leaves. Existing cleaning equipment such as road sweepers cannot clean autumn fallen leaves intact because the volume of the garbage bin is small and the leaves can easily block the suction opening. The problem of cleaning fallen leaves is common in vast areas of the country and has strong customer demand. Therefore, our independent development of a vacuum cleaner "with leaf cleaning and crushing functions" will have broad application prospects.
Multi-functional leaf crushing and sweeper with unloading and dust suppression functions (hereinafter referred to as special sweeper) Field No. 07204 Local ambient air quality improvement and pollution prevention technology This technology conforms to the "Technical Field" VII. Resources and Environmental Technology---(2) Air pollution control technology---4. Local ambient air quality improvement and pollution prevention technology.
This project involves a cleaning vehicle with high efficiency, wide use and strong adaptability. It is used to clean deciduous land on a large scale. It is used in trunk roads, urban residential areas, parks, squares, factories and other places where fallen leaves occur. Cleaning of fallen leaves has the advantages of high net absorption rate (net absorption rate of 85%), no water storage, no sprinkler, no secondary dust, and high working efficiency to prevent air pollution. The innovation points and advanced nature of technology are reflected in:

1. Vacuum cleaning technology, which adopts the pure suction principle for road cleaning operations;
   2)The unique suction port form effectively combines negative pressure dust collection with leaf crushing;
2. A dedicated leaf crushing device with staggered blades realizes the leaf crushing function and also has a certain crushing effect on scattered dead branches;
3. Sensitive overload protection system effectively prevents crushing motors and circuits from blowing, and reminds drivers to check;
4. Install a scraper in front of the suction port to increase the effective area for gathering leaves and improve operating efficiency;
5. The inclined front baffle of the main suction port is more conducive to the entry of leaves;
   7)A large-volume box body is conducive to increasing the leaf harvesting capacity of one operation and extending the operation time;
   8)Add a large rear door structure to facilitate the dumping of leaves:
   9)A special ash unloading and dust raising device controls the dust generated during the unloading process. Due to the large amount of leaves, the ash unloading and dust raising device is also designed specifically.
6. The easy-to-operate ash unloading and dust raising device can be retracted within the range of the box when the vehicle is transferred without affecting the driving of the vehicle.
   The implementation of this technology has filled the gap in domestic products of this technology and is the first and patented technology in the field of special sanitation cleaning.
   Patent status:
   The project has obtained 8 patents, including 3 invention patents, 3 utility model patents, and 2 appearance patents.
   Detection and novelty search:
7. Technology has formed the test report produced by the National Motor Vehicle Testing Center, showing that the net absorption rate is as high as 85%.
8. The novelty search report shows that within the scope of the domestic publicly published Chinese literature inspected, there is no public literature report exactly the same as the novelty search point of this topic, and the novelty search point of this topic is domestic novelty.
   Application benefits:
   Since the implementation of the project, profits and taxes of 20 million yuan have been generated in the past three years, driving the development of the automotive electronics industry and the special vehicle industry. Used in Ningbo City Government, Shijiazhuang Sanitation, Xuhui Sanitation and other places. Leaf cleaning is convenient and has a high net absorption rate. Received good comments from users.
   The project outlines the blueprint for a special multi-functional intelligent sweeper and plays a leading and demonstration role in the field of environmental protection in China. In terms of environmental protection, special sweepers avoid secondary pollution, ensure clean production, and can also adapt to some leaf-piled streets and material recycling. Because in these industries, the traditional operation methods and performance of sweeper are difficult to meet the requirements of users. The reason is that the collected medium has a large amount of dust, a high proportion, difficulty in dust suppression, and no sprinkler can be applied. Dedicated sweeper can essentially solve these problems