The patented product "zero-friction telescopic ball valve" is a multifunctional valve product designed based on customer needs and the technical conditions required for industrial modernization. The core technology provided by this patent is: the ball sealing surface is separated from the valve seat sealing surface during the opening or closing of the valve, the ball is completely suspended in the inner cavity of the valve body, and there is no friction with the valve body valve seat sealing surface when the ball rotates, achieving a zero-wear effect. The core sealing part of this valve has a unique and reasonable structure of a special-shaped ball. A notch is opened on the top of the ball along the flow direction of the medium, so that the ball has the function of opening and closing. A support wedge and 4 connecting rods and other components are installed between the notches of the ball. The components are connected to the bottom of the valve stem and form a whole with the ball. When the valve stem moves up and down, the valve stem drives the components at the lower end to close or open the ball. The combination components can adjust the volume of the ball to become larger or smaller, and have a forced compensation function for the valve seal, making the valve sealing performance more reliable. At the same time, forced sealing can be implemented when emergency shut-off is required in an emergency state. The "zero friction telescopic ball valve" has a short switch stroke and has the function of fast switching (manual 3 seconds-1 minute). Because the sealing ball is completely separated from the valve seat seal during the rotation process, there is no friction, and the opening and closing force is particularly small (the torque of DN100 is 40NM), not only opening and closing become easier, but also because it will not scratch the sealing surface. After testing and customer application conditions, it has been confirmed that it can be opened and closed 100,000 times without wear and the seal does not leak, so the service life is longer. The scientific and reasonable sealing structure of the "zero friction telescopic ball valve" solves the long-standing drawbacks of different types of products such as gate valves, stop valves, ball valves, double-off and double-off valves, track valves, and plug valves that are currently widely used. It has double-sided and bidirectional sealing, anti-locking under high temperature conditions, can be frequently opened and closed for more than 100,000 times without leakage, and can achieve rapid opening and closing. It is an upgraded product of the above traditional products.
The pneumatic emergency shut-off valve group, an extended product of the "zero friction telescopic ball valve", is composed of a pneumatic "quick opening and closing spherical sealing gate valve" and a manual hard-sealed "zero friction telescopic ball valve". The pneumatic device of the pneumatic valve product is composed of a straight-stroke cylinder and an angular-stroke cylinder, and the air source is used to open and close the valve. In order to be able to operate the valve normally due to power outages and gas outages in the event of an accident, a backup gas tank is installed on the pneumatic valve of this valve group. When the valve is in normal state, the gas in the backup gas tank is stored and not used. If an accident causes power outages and gas outages, the gas source of the backup gas tank will directly supply gas to close the valve normally, ensuring that the pneumatic device can be automatically closed at least once as long as the backup gas tank is not damaged. If a very serious accident occurs on site, the electricity, gas source and spare gas tank will be damaged in an instant, causing the pneumatic valve to fail to work properly. The manual valve can be closed manually by the personnel on site. Although it is slower than the pneumatic closure, the manual "zero friction telescopic ball valve" also has the function of fast opening and closing, which can still achieve the purpose of quickly cutting off the source of danger, eliminating the accident or reducing the accident to a minimum.
This pneumatic emergency shut-off valve group has the function of remote control. Under the normal production state of the enterprise, the valve is remotely controlled. If the pipeline or equipment downstream of the valve group leaks, the staff only needs to operate in the central control room to close the valve, ensuring that the valve is closed at the fastest speed and the shortest time at the first time, cutting off the leaking medium and ensuring the safety of the working conditions.
This patented product can cut off the source of danger at the fastest speed in the shortest time, which plays a role in protecting the safe production of the enterprise.
