Inflatable pneumatic dome valve

Inflatable pneumatic dome valvesummary:

Inflatable pneumatic dome valveIt is a new type of fast closing valve that adopts an air sealed structure. When the valve is opened and closed, there is no contact between the valve core and the inflatable sealing ring. The sealing ring is made of special formula rubber and can be widely used for sealing powdered materials. It is a key component in pneumatic conveying systems and widely used in fields such as power, metallurgy, chemical, food, and pharmaceuticals. The valve core has no contact with the sealing ring during operation, low operating resistance, and long service life.

The dome valve core is made of different materials and undergoes different hardening treatments on the surface according to different usage scenarios. By utilizing the smooth and hard surface of the core, it can ensure good and tight contact with the rubber sealing ring to ensure reliable sealing. The rubber sealing ring is made of special rubber and has the characteristics of high temperature resistance, corrosion resistance, wear resistance, aging resistance, etc., with a long service life. When the valve is opened, the material port flows smoothly without obstruction. This valve is suitable for substances such as gases, liquids, semi fluids, and solid powders. Pneumatic actuators are driven by fully enclosed linear or fan-shaped cylinders, with high output torque and reliable performance, which can meet the working conditions under harsh conditions.

Working Principle:

The pneumatic dome valve can cut off the flowing material flow or stationary material column entering the pressure tank, and then close to achieve sealing. Thus ensuring the filling of the pressure tank without relying on the level gauge of the sending tank, the control principle is simple and reliable.
When processing abrasive materials, the expandable pressure sealing ring embedded in the valve seat ensures the working pressure difference before and after the valve. The elastic and expandable sealing ring can trap material particles, avoiding the wear of the valve seat and sealing ring caused by the sliding of material particles due to pressure difference, greatly reducing maintenance costs and equipment shutdown losses, ensuring the reliability and efficiency of system operation.

working principle

1. The dome valve core is a spherical dome. During the opening and closing process of the dome valve, there is a gap of about 2mm between the core and the rubber sealing ring, allowing the core and rubber sealing ring to move in a non-contact manner. The purpose is to prevent friction and reduce wear between the core and rubber sealing ring. The pneumatic actuator of the dome valve is a fully sealed linear or fan-shaped cylinder, which directly drives the dome valve to rotate, effectively preventing dust from entering and causing wear, leakage, and other phenomena. When the dome valve is in the closed state, the rubber sealing ring inflates and expands, tightly pressing against the spherical dome valve core, forming a very reliable sealing ring that prevents the flow of materials in the pipeline.
2. The dome valve core is made of different materials and undergoes different hardening treatments on the surface according to different usage scenarios. By utilizing the smooth and hard surface of the core, it can ensure good and tight contact with the rubber sealing ring to ensure reliable sealing. The rubber sealing ring is made of special rubber and has the characteristics of high temperature resistance, corrosion resistance, wear resistance, aging resistance, etc., with a long service life. When the valve is opened, the material port flows smoothly without obstruction. This valve is suitable for substances such as gases, liquids, semi fluids, and solid powders.

Product Application:

YDF pneumatic ceramic dome valve is a new type of fast opening and closing valve, which is currently the most widely used and effective key valve in pneumatic ash conveying systems of thermal power generation enterprises internationally. Mainly used in pneumatic conveying systems in the fields of power, metallurgy, chemical engineering, food, pharmaceuticals, etc. for controlling the feeding, discharging, exhaust, blowing, blocking, and pipeline switching of dry ash and dry powder materials. The excellent performance of the product has been fully verified in years of market operation and has won the trust of a large number of customers.

Main component materials:

Application specifications:

Main appearance and connection dimensions:

Key points for installation and use

1Before installation, carefully read this manual and verify the valve model, diameter, and technical parameters.　　

2. It is strictly prohibited to weld the flange after installing the valve to avoid damaging the valve sealing ring. The installation distance of valves reserved for pipelines should be appropriate, and gaskets should be added on both sides of the flange.　　

3. The centers of the two pipelines and the diameter center of the valve should be kept coaxial, and the flange surface should be flat without significant deviation to ensure the clamping and normal operation of the valve. Tighten the bolts evenly and symmetrically.

4. The valve has been adjusted and dynamically tested before leaving the factory, and the air circuit connection is intact.