Butterfly-type multi-functional water pump control valve
1.1 Product IntroductionThe butterfly multi-functional pump control valve is the latest and most advanced control equipment for pump stations in both domestic and international markets. This valve is the third-generation product of the hydraulic automatic valve and adopts fluid design, featuring low energy consumption, stable operation, and good sealing effect. It combines the functions of electric gate valve, electric butterfly valve, and check valve, with agile closing speed and adjustable pressure relief time, effectively eliminating water hammer hazards and protecting the safety of pumps and pipeline systems.This valve is mainly used for the outlet pipelines of centrifugal pumps, mixed-flow pumps, and axial-flow pumps in automated water supply and drainage pump stations. It is equipped with two control devices: diaphragm type and piston type, which can be respectively applied to clear water and raw water media. It can also provide real-time feedback on the online operation of the valve and achieve automatic control and remote detection functions for long-distance transportation projects.In terms of product types, the company has developed various specifications such as ordinary type, return water low-pressure type, sewage type, signal output type, oblique flow pump type, and anti-freezing type to meet the different needs of different customers and working conditions. Due to its compact structure and light weight, this valve is particularly suitable for large-diameter pipeline systems. It can be widely used in water supply systems of industries such as power, environmental protection, metallurgy, petrochemicals, water management, municipal services, and food, as well as sewage pump rooms and chemical fluid transportation systems.
1.2 Development BackgroundIn the 1960s, electric butterfly valves were used at the pump outlet, along with manual butterfly valves. The electric butterfly valve was linked with the pump, but after the pump started, the opening torque of the electric butterfly valve was very large, causing significant damage to the valve and a short service life. Moreover, in the event of a sudden power outage, the electric butterfly valve could not close, resulting in backflow of water and frequent accidents.In the 1970s, ordinary butterfly check valves were used at the pump outlet, lacking slow opening and closing functions, unable to start pumps under light load or eliminate water hammer. The pump and valve often experienced failures.In the 1980s, liquid-controlled butterfly valves were used at the pump outlet, with large volume and complex maintenance, and prone to oil leakage. In the 1990s, multi-functional hydraulic control valves were used at the pump outlet, with good overall effects, but they had a large volume and could not adapt to large-diameter production, and the flow resistance coefficient was relatively high.In the 21st century, advanced hydraulic automatic valves were used at the pump outlet, featuring functions such as light-load pump startup and water hammer elimination, as well as a small volume and low flow resistance coefficient. However, in some working conditions with a lot of sediment and debris (such as the water quality of the Yellow River and wastewater treatment systems), the control pipeline of the valve is prone to blockage, causing valve failure; large debris can easily jam the valve plate, resulting in poor valve sealing.Since our company's establishment, we have been dedicated to the research and production of pump outlet control valves. To completely solve the above problems, the company spent five years developing the butterfly multi-functional pump control valve. This valve can meet the requirements of water supply and drainage pump station conditions and is the most advanced pump outlet control valve currently available.
1.3 Introduction of JD745X Type
The JD745X multi-functional pump control valve is designed and manufactured based on imported products and advanced new products of the same type in China. Its main purpose is to be installed on the pump outlet pipelines of water supply systems in high-rise buildings and other water supply systems to prevent backflow of media, prevent the occurrence of water hammer and water shock, and one valve can simultaneously perform the functions of an electric valve, a check valve, and a water hammer fire extinguisher, effectively improving the safety and reliability of the water supply system.
