Large-diameter duckbill valve is a kind of drainage equipment widely used in water conservancy, environmental protection, construction and other fields, its unique duckbill shape design, can effectively prevent sewage backflow, and at the same time has the characteristics of strong bearing capacity, wear resistance, corrosion resistance, etc., so it is widely used.
1. The structure and working principle of large-diameter duckbill valve.
The large-bore duckbill valve is composed of parts such as the valve body, the valve plate and the valve stem, where the valve plate is a duckbill-shaped design that can be opened and closed freely. When the sewage pressure in the pipeline reaches a certain value, the sewage will rush open the valve plate and be discharged into the downstream pipeline;When the pressure in the pipe is reduced, the valve plate will automatically close under the action of its own weight and valve stem, preventing the backflow of sewage.
Second, the characteristics of large-diameter duckbill valves.
1.Prevent sewage backflow: The duckbill shape design of the large-diameter duckbill valve makes the valve plate close to the pipe wall of the downstream pipeline after opening, forming a "V" shaped channel, when the pressure in the pipeline is reduced, the valve plate will not suck back due to negative pressure, thus effectively preventing the backflow of sewage.
2.Strong bearing capacity: The valve plate and valve body of the large-diameter duckbill valve are integrated design, which has strong bearing capacity, can withstand large water flow and pressure, and is not easy to damage.
3.Wear-resistant and corrosion-resistant: The valve body and valve plate of large-diameter duckbill valves are made of wear-resistant and corrosion-resistant materials, which can adapt to various harsh environmental conditions and prolong service life.
4.Easy to install: The large-bore duckbill valve is easy to install, only need to be connected to the pipe, and no special tools and skills are required.
5.Easy maintenance: The maintenance of large-diameter duckbill valve is convenient, and it only needs to be checked and cleaned regularly, and no special maintenance and maintenance is required.
3. The application range of large-diameter duckbill valves.
Large-diameter duckbill valves are widely used in water conservancy, environmental protection, construction and other fields, and are mainly used in sewage pipelines, waste water pipelines and other occasions in drainage systems, which can effectively prevent sewage backflow and protect environmental sanitation and water quality safety. In addition, large-diameter duckbill valves are also used in drainage systems for ships, docks, etc.
Fourth, the advantages and disadvantages of large-diameter duckbill valves.
Pros:1It can effectively prevent sewage backflow and protect environmental sanitation and water quality safety
2.Strong bearing capacity, able to withstand large water flow and pressure;
3.Wear-resistant, corrosion-resistant, able to adapt to a variety of harsh environmental conditions;
4.It is easy to install and does not require special tools and skills;
5.It is easy to maintain, and only needs to be checked and cleaned regularly.
Deficiencies: 1It has a certain resistance effect on high-speed flowing sewage, which may affect the drainage effect
2.For large diameter pipes, multiple duckbill valves may need to be used in series to meet the requirements;
3.For sewage with a large amount of suspended solids, it may lead to poor drainage due to blockage.
Fifth, the development trend of large-diameter duckbill valves.
With the continuous improvement of environmental awareness and the development of technology, large-diameter duckbill valves, as an environmentally friendly drainage equipment, will be more widely used and promoted. In the future, large-bore duckbill valves will be developed in the following aspects:
1.In terms of materials: new materials that are more wear-resistant, corrosion-resistant, and high-temperature resistant are used to improve the service life and adaptability of duckbill valves.
2.Structural design: optimize the structural design, reduce the fluid resistance, and improve the drainage efficiency. At the same time, a more intelligent adaptive valve plate control mechanism was developed to adapt to different drainage needs.
3.Maintenance management: strengthen the intelligent monitoring and maintenance management of duckbill valves, and improve the operational reliability and maintenance efficiency of equipment through technical means such as first-class monitoring and remote control.