Introduction of butterfly oblique sealing multifunctional check valve

Butterfly type oblique sealing multi-function check valve is mainly used for water supply and drainage piping system. It plays the role of slow opening, slow closing and non-returning at the outlet to prevent the reverse flow of medium and protect the safety of pumping station equipment.

In terms of structure, the valve adopts a three-eccentric structure with a tilted disc plate. In the material of the valve, the valve body/plate uses 0235-A (welding, to be treated), and the stem is 2Cr13 stainless steel. In addition, the valve uses a stainless steel laminated seal (plate-multilayer laminate, body-surfacing 316 alloy steel) to ensure that the valve has a very reliable sealing performance.

The valve uses a hydraulic slow-closing cylinder control system to effectively control the valve when the pump is stopped automatically three-level slow-closing, fast off 70%, slow off 20%, and finally slow off 10%, effectively eliminate the water hammer pressure. The opening of the valve depends on the pressure of the pump to the medium to naturally open, closing the reflow pressure of the medium itself and the working force of the electric actuator. When the water pump starts, the valve opens automatically under the action of the pump water, and the external multi-stage adjustable hydraulic damping device cylinder piston rod retracts; when the water pump is running, the butterfly plate will stably work under a relatively large opening, and the pump can be stopped normally. When the pump is stopped in an accident, the butterfly board is divided into quick-closing, slow-closing and slow closing. In addition, the valve has a truncated function. The valve has a manual closing function and does not interact with the pump. The valve completely solves the problem of energy consumption when the existing butterfly check valve is in the open state, prevents the shock vibration caused by the opening speed, and solves the problems of supply, discharge and exhaust of the piston rod and provides the required The damping of the damping buffer.

The valve has the functions of slow opening, slow closing, and non-returning, and functions as a “one valve” and “multi-valve”. The valve is ingeniously designed, and the cushioning device has a simple structure, a compact shape, a short valve body, and a lighter weight. It is easy to obtain the required buffer damping by adjusting. The valve's "Butterfly type inclined sealing device" technology, open and close without friction, improve the sealing performance, effectively prolong the service life; effectively reduce the water loss design, minimize the head loss, high efficiency and energy saving; achieve three levels of relief Closed and closed, the valve is closed in three phases to achieve the closing action of the valve, thereby effectively protecting the safety of the pipe network and the pump.

In addition, the valve is provided with an electric control mechanism that can be electrically linked to the pump. The user configures the corresponding instrument and control elements. The valve can realize multiple functions such as time-delayed valve opening, constant pressure valve opening, and forced valve opening. If you want, you can also configure accommodative electrical equipment to regulate the flow.

In the process of using the butterfly inclined sealing multifunctional check valve, sediment and other debris accumulation and jamming will not occur in the through flow channel, which will affect the normal operation of the valve. This has a positive effect on the effective protection of pumps and pipes and extending their service life. In addition, compared with traditional water-controlled check valves, this product can effectively save energy and effectively save resources and operating costs.