High-performance ceramic ball valve

Abstract

The invention discloses a high-performance ceramic ball valve. The ceramic ball valve comprises a valve seat, a ball body, a valve rod, a valve body lining, a packing box and a valve seat lining which are made of ceramic and a valve body, a valve deck, a fastening piece, a handle seat, a driving shaft, a packing pressing sleeve and a packing pressing plate which are made of metal materials; the valve seat lining is provided with a stepped inner hole, the outer diameter of the stepped inner hole is connected with an inner hole of the valve deck in a matched mode, the inner diameter of the stepped inner hole is connected with an outer circle located at the tail of the valve seat, and the joint of the stepped inner hole and the valve seat is provided with multiple elastic sealing rings. According to the high-performance ceramic ball valve, the structure is simple, multiple sealing structures are adopted, it is guaranteed that corrosive media cannot make contact with metal, and therefore serious potential safety hazards due to the fact that the metal materials are corroded by the media can be avoided.

Description

technical field [0001] The invention relates to a ball valve, in particular to a high-performance ceramic ball valve. Background technique [0002] The valves commonly used in various industries in China are metal valves. The use of metal valves has a history of hundreds of years. Although metal valves have been improved in structure and materials, they cannot adapt to the increasingly high wear and tear due to the limitations of metal material properties. Corrosion and other harsh working conditions are mainly reflected in the short service life and serious leakage, which greatly affect the stability of the system operation; traditional metal valves urgently need to be completely innovated in terms of materials, design and manufacturing processes; however, ceramic materials are due to their inherent It has excellent physical properties, such as excellent chemical corrosion resistance, wear resistance, high temperature resistance, and erosion resistance; therefore, ceramic b...

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Problems solved by technology

[0002] The valves commonly used in various industries in China are metal valves. The use of metal valves has a history of hundreds of years. Although metal valves have been improved in structure and materials, they cannot adapt to the increasingly high wear and tear due to the limitations of metal material properties. Corrosion and other harsh working conditions are mainly reflected in the short service life and serious leakage, which greatly affect the stability of the system operation; traditional metal valves urgently need to be completely innovated in terms of materials, design and manufacturing processes; however, ceramic materials are due to their own Physical properties, it has excellent chemical corrosion resistance, wear resistance, high temperature resistance, erosion resistance and other performance advantages; therefore, ceramic ball valves are widely used in harsh working conditions such as coal chemical industry and polysilicon

[0003] At present, the seat and ball of ordinary ceramic ball valves are made of ceramic materials, and the shell is made of metal materials, and no reliable sealing measures have been taken between the ceramic inner parts and the metal shell. Therefore, this structure can only be used in wear-resistant conditions. , can not be used in strong corrosion conditions, the use is limited

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