Views:0 Author:Site Editor Publish Time: 2020-08-31 Origin:Site
The sanitary ball valve is made of 304SS, 304L or 316, 316L stainless steel, which is made by special treatment after processing. Generally, the environment used for sanitary valves are those pharmaceutical, food and daily chemical industry which require very high hygiene level. Because they are directly in contact with human body, they require higher mechanical hygiene conditions for production. The function of sanitary ball valve is many, it is generally used to cut off the switch or adjust the medium in the pipeline. Do you know how sanitary ball valve works? Do you know the structure of sanitary ball valve? After reading this article, you will get the result.
The use of the sanitary ball valves
The structure of the sanitary ball valve
Do you know how sanitary ball valve works?
According to the structure, sanitary ball valve can be divided into floating ball valve, fixed ball valve and elastic ball valve. According to the different sealing performance, it is divided into hard sealing ball valve and soft sealing ball valve.
The opening and closing part of sanitary ball valve is a round ball with hole. The ball core rotates 0-90 ° around the stem axis to open or close the valve. Sanitary ball valve has many functions. It is generally used to cut off or adjust the medium in the pipeline. The three-way ball valve can cut off, distribute and change the flow direction of medium flexibly. The sealing surface of sanitary ball valve is usually closed with the spherical surface, so it is not easy to be eroded by medium. It is easy to operate and has a simple and compact structure. It can be used in working conditions with water, natural gas, acid and solvent.
Sanitary ball valve is mainly composed of valve body, ball, sealing ring, valve rod and driving device.
(1) Valve body: the body contains ball and sealing ring, and has medium inlet and outlet channels.
(2) Ball: the ball is the opening and closing part of sanitary ball valve, its surface is the sealing surface, so it requires high precision and roughness. There is a medium channel with circular cross-section in the ball, and the diameter of the channel is usually equal to the nominal diameter of the valve. For through ball valves, the passage on the ball is through. According to the fixing way of the ball in the valve body, the sanitary ball valve can be divided into floating ball type and fixed ball type. Floating ball valve: the ball can float, under the action of medium pressure, the ball is pressed to the sealing ring on the side of the specific port, so as to ensure the sealing. Fixed ball valve: the ball is fixed by the bearings at the upper and lower ends, which can only rotate without horizontal displacement.
Sanitary ball valve is evolved from plug valve. It has the same rotation 90 degree lifting action, the difference is that the cock body is a ball, with a circular through hole or channel through its axis. The ratio of the spherical surface to the port should be such that when the sanitary ball valve rotates 90 degrees, the inlet and outlet should be spherical, so as to cut off the flow. When the sanitary ball valve rotates 90 degrees, the inlet and outlet should all present the ball mouth, so as to open the flow, and there is basically no flow resistance.
In conclusion, this article introduce the Working principle and the usage of the sanitary ball valves. I think it is helpful for you.