Description and analysis of manual ball valve


Manual ball valve, three-piece ball valve and gate valve are the same type of valve, the difference is that its closing part is a sphere, and the sphere rotates around the center line of the valve body to achieve opening and closing. Ball valves are mainly used to cut off, distribute and change the flow direction of the medium in the pipeline. The three-piece ball valve is a new type of valve that has been widely used in recent years. This type of valve should generally be installed horizontally in the pipeline.

The manual ball valve can automatically release the pressure when the working pressure in the oil tank exceeds or is abnormal to ensure safety. These two watch tools do not need to be installed if the raw material is operated in an open tank. The upper end of the functional pipeline interface should be equipped with water injection, pure water inlet, pure steam, cleaning liquid inlet, compressed air, inertial air intake, vacuum port, etc., and equipped with 1×2 spare ports, and all external connections should be card-type fast loading. The interface should be equipped with injected water, pure water inlet, pure steam, clean liquid inlet, compressed air, inertial gas inlet, vacuum port, etc., and there should be 1 to 2 spare ports. All external connections should be connected via card-style quick-load connections. The design and configuration of the sanitary piping of the freeze-drying batching system requires what kind of standard piping to be installed after freeze-drying batches, which are often overlooked by many users. The use of general pipe fittings and system loops with hand welded connections are still used in many pharmaceutical companies. The system will cause liquid accumulation and difficult to clean, and will leave residual liquid in the pipeline system after use, causing pollution to the next batch of materials. Sanitary pipe fittings should adopt an excellent batching system, and the piping system should be connected by automatic welding. After installation, a stable protective film (layer) is formed by pickling passivation, which is convenient for on-site cleaning and on-site disinfection, thereby ensuring that the liquid is not contaminated during transportation. After transport, it is easy to clean and sterilize.

The sealing performance of the manual ball valve seat is good. The sealing ring of the ball valve is mostly made of elastic materials such as polytetrafluoroethylene. The soft sealing structure is easy to ensure the sealing, and with the increase of the medium pressure, the sealing force of the ball valve increases. Stem seal is reliable. When the ball valve is opened and closed, the valve stem only rotates and does not move up and down, the packing seal of the valve stem is not easily damaged, and the sealing force of the reverse seal of the valve stem increases with the increase of the medium pressure. Due to the good self-lubricating properties of PTFE and other materials, the friction damage with the ball valve ball is small, and the service life of the ball valve is long. The utility model can be equipped with pneumatic, electric, hydraulic and other driving mechanisms to realize remote control and automatic operation. The ball valve has a smooth channel for conveying viscous fluids, slurries and solid particles.

The discharge bottom valve can be equipped with oil tank discharge, the discharge port can be opened at the bottom of the storage tank, and a diaphragm valve or a diaphragm valve can be installed to complete the discharge. However, there was a defect in the welding of the last two valves at the bottom of the tank, and there was a small liquid accumulation point that could not be resolved. In recent years, the diaphragm valve bottom valve is often used to directly weld the bottom of the storage tank to form an inclined angle to discharge all the solution in the tank, overcoming the problem of liquid accumulation points, and at the same time, it can discharge all the materials in the batching tank. The configuration of detection and control elements often has a detection hole in the lower half of the batching tank to facilitate the installation of probes connected to temperature, pressure, liquid level and other sensors to detect the pH, temperature, concentration, conductivity, etc. According to the process requirements, continuous on-site detection can be selected, and the sampling valve can also be used for intermittent measurement. Equipped with pressure gauge and safety valve to display the pressure in the batching tank, install a sanitary diaphragm pressure gauge (or vacuum gauge) on the top

The manual ball valve is a kind of valve that came out in the 1950s. In half a century, the ball valve has developed into a major valve type. The ball valve is mainly used to cut off or connect the medium, and can also be used for the regulation and control of the fluid. The V-shaped ball valve can carry out relatively accurate flow regulation and control, while the three-way ball valve is used to distribute the medium and change the flow direction of the medium. The manual ball valve is mainly named according to the driving method of the ball valve through the rotation of the handwheel or handle.

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