Electric rotary ball valve

Electric rotary ball valveOverview

The electric bidirectional flow hard seal rotary ball valve can not only reliably cut off under forward pressure, but also reliably seal under reverse pressure or when the reverse pressure is much greater than the forward pressure. The valve seal adopts the structure and principle of a hemispherical valve, and the outer shape adopts a butterfly structure, which has the characteristics of small volume and light weight; And it has the characteristics of bidirectional hard sealing, low sealing friction, durability, and lightweight opening and closing, so its cost-effectiveness is much higher than that of hemispherical valves. The successful development and application of this valve is a major technological innovation in the valve industry.
Product features;
1. The adaptive function is based on the principle of entropy increase. Under the action of gravity or other forces, the sphere inside the conical surface can move from any direction and automatically align with the center of the conical surface and coincide. That is, under the action of the medium, the valve core and valve seat center can automatically complete the alignment and automatic coincidence sealing when they are not concentric.
2. There is no friction during opening and closing, based on the principle of eccentric rotation of the sphere. When opening, the sphere instantly leaves the valve seat, and when closing, the sphere instantly overlaps with the valve seat, so there is no friction during opening and closing.
3. Automatically bridging wear, based on the principle of eccentric rotation of the sphere or valve seat, when there is equidistant expansion wear on the sphere or valve seat, the sphere moves to its overlapping position when closed and automatically adjusts its posture under the principle of entropy increase, becoming tighter as it closes.
4. Based on the same principle, on the projection surface of the sealing line, when the sphere is closed, its area continuously expands, and when it is opened, its area continuously decreases.
5. By amplifying the sealing pressure ratio, line contact sealing can achieve a great sealing pressure ratio, making it possible to achieve zero leakage through hard contact sealing. The characteristics of the spherical surface make its embedding extremely shallow. As long as the hardness of the sealing material is selected appropriately and the anti scratch performance and anti erosion wear performance of the valve seat material are good, a long service life can be ensured while achieving zero leakage.
6. Long service life, both the sealing surface of the valve core and the sealing surface of the valve seat are metal entities. Gas protection or vacuum welding, plasma spray splashing, ether laser atomic penetration and other methods can be used as needed to form homogeneous or gradient layers of high alloy steel, wear-resistant stainless steel, hard alloy, superhard ceramic alloy, cubic boron nitride, artificial diamond and other materials on the substrate to adapt to various working conditions and achieve ultra-high service life.
7. Working at temperature, this product does not have components such as rubber or plastic that are limited by working temperature. Therefore, selecting appropriate valve body materials can be used in conditions below minus 200 ℃ or above 1200 ℃, as well as in various corrosive media, greatly expanding the application range.
8. It can be used in media with solid-liquid two-phase or solid-liquid gas three-phase coexistence, as well as in semi-solid flow media such as amorphous powder, solid particles, slag, tailings, dense slurry, slag slurry, concrete slurry, pulp, and mud conditions.
9. The regulation of fluid pressure, pressure difference, flow rate, and temperature, this product can be used for regulating fluid pressure, pressure difference, and flow rate because the valve core is a part of the sphere and less than half of the sphere, and the valve seat is a conical surface. The fluid pressure, pressure difference, flow rate, and temperature are basically proportional to the opening of the valve core. The advantages are particularly obvious when the opening is small, because when it is positively small, the fluid is directed towards the center of the valve chamber, and the injected fluid collides with each other at the center of the valve chamber, effectively eliminating the impact potential energy of the fluid medium and reducing noise and vibration. The streamlined valve core reduces or even eliminates the negative pressure vortex area on the back of the valve core, eliminating the harm of cavitation and erosion to the valve core. In a large area with a moderate opening range, the relationship between fluid flow rate, pressure, pressure difference, and opening is approximately equal in percentage. The adjustable range is 30-80% of the opening, with a large adjustable diameter and proportion. Various types of rotary ball valves, including ball valves, spherical rotary valves, bi-directional flow hard seal rotary ball valves, bi-directional pressure bearing spherical rotary valves, and bi-directional hard impact rotary ball valves.

Electric rotary ball valvePerformance standards

dimensional parameters

Electric Actuator