As early as the beginning of the 21st century, plastic inspection wells have been widely used abroad. In recent years, there have been some new developments in application technology. For example, Britain has successfully adopted the new technology of metal pipe sheathing plastic pipe in anti-corrosion pipeline. ABS plastic foam plastic pipes adopted in the United States are widely used in non pressure pipes. A plastic sewage pipe with a large number of regular holes on the pipe wall is produced in Western Europe. This pipe is 30% lighter than ordinary pipes. So let's introduce the plastic inspection well comprehensively.
The plastic inspection well is composed of well seat, shaft, well cover and other accessories, which can be used in the drainage and sewage of municipal engineering and construction engineering. It is usually set to facilitate the regular inspection, clearing and other special inspection and maintenance functions of the pipe and canal system. It has the characteristics of wear resistance, acid resistance and corrosion resistance, which can be described from the following aspects:
1、 Composition of plastic inspection well
Plastic inspection well seat: according to the number and angle of connecting pipes, there are starting well seat, straight well seat, three-way well seat, four-way well seat, 90 degree elbow well seat, etc.
Check the wellbore: PVC-U double-layer axial hollow pipe, HDPE hollow winding pipe, etc.
Inspection well cover: it can be divided into cast iron inspection well cover, composite material inspection well cover and steel fiber concrete inspection well cover.
Accessories of inspection well: pipe hoop, movable ladder, heat shrinkable sleeve, retaining ring, connector and other relevant accessories.
2、 Application of plastic manhole
Plastic inspection wells are mainly used for inspection, cleaning and maintenance of urban roads, bridges, tunnels, rail transit, comprehensive pipe gallery, landscaping, water, sanitation, and drainage systems in residential areas, parks, public building areas, factories, and municipal administration.
3、 Characteristics of plastic manhole
It is light in weight, high in strength, good in rigidity, strong in abrasion resistance, strong in waste water and waste residue transportation capacity, chemical corrosion resistance, excellent in cold resistance and sun resistance, fast and convenient in transportation and installation, and low in comprehensive project cost. The shaft and bottom seat can be opened to connect branch pipes at will according to the needs of the project, which is suitable for pipes with different diameters, and is a product in line with the concept of green environmental protection.
4、 Manufacturing process of plastic inspection well
Plastic inspection wells can be divided into winding method, injection molding method and coating method according to the molding method.
① Winding plastic inspection well: the winding plastic inspection well uses spiral winding technology to form various parts, and then through secondary processing processes such as hole opening and cutting, and finally realizes overall prefabrication through plastic welding. The disadvantage is that the overall density of the products is not high, the structural stress is uneven, and the performance is difficult to guarantee.,
② The coating method is only applicable to the manufacturing of glass fiber reinforced unsaturated polyester resin (commonly known as glass fiber reinforced plastic) inspection wells. This method uses hand lay up and spray molding processes to prefabricate glass fiber cloth and resin into integral components. The fiberglass inspection well has the advantages of corrosion resistance, good sealing and light weight. The disadvantage is that it is made by hand, and the size and performance of the products are difficult to guarantee, and it is difficult to realize batch production. The environmental pollution is serious in production and it is difficult to recycle, so it is seldom used.
③ Injection molding plastic inspection well, commonly known as injection molding plastic inspection well or one-time molding plastic inspection well. It relies on a special mold to mold each part at one time through high-pressure or low-pressure injection on a large injection molding machine. The advantages are good product structure integrity, less secondary processing procedures during assembly, and high production efficiency.
The application effect, good crack resistance and corrosion resistance, environmental friendliness, safe use, and continuous improvement of materials and installation technology are the basis for the success of plastic inspection wells. For more information, please pay attention to the official website of Hainan Plastic Industry Co., Ltd.
