Three-way hard sealing ball valve

Abstract

The invention provides a three-way hard sealing ball valve. The three-way hard sealing ball valve comprises a hard sealing ball valve body, an inlet sealing flange is fixedly arranged at one end of the hard sealing ball valve body, a first outlet flange is fixedly arranged on the front face of the hard sealing ball valve body, a second outlet flange is fixedly arranged at the other end of the front face of the hard sealing ball valve body, a sealing base is installed in the middle of the top end of the hard sealing ball valve body, a casing pipe is fixedly installed at the top end of the sealing base, and a driving device is fixedly installed at one end of the casing pipe. According to the three-way hard sealing ball valve, a grease barrel, a miniature telescopic air cylinder, a sealing piston, an oil outlet, a branch pipeline and an oil injection nozzle are arranged, the miniature telescopic air cylinder stretches out and draws back to enable the sealing piston to move, lubricating oil in the grease barrel is pressed, enters the branch pipeline through the oil outlet and then enters a driving valve rod and a ball bearing through the oil injection nozzle, so that a good lubricating effect is achieved, friction between the driving valve rod and the ball bearing is reduced, corrosion is avoided, and long-term normal use of the ball valve in a severe environment is achieved.

Description

technical field [0001] The invention relates to a ball valve, in particular to a three-way hard-sealed ball valve, and relates to the technical field of ball valves. Background technique [0002] Ball valve, the opening and closing part (ball) is driven by the valve stem and rotates around the axis of the ball valve. It can also be used for the regulation and control of fluids, among which the hard-sealed V-shaped ball valve has a strong shear force between its V-shaped ball core and the metal valve seat of surfacing welding carbide, and is especially suitable for fibers and tiny solid particles. etc. medium. The multi-way ball valve can not only flexibly control the confluence, diversion, and flow direction switching of the medium on the pipeline, but also close any channel and connect the other two channels. This type of valve should generally be installed horizontally in the pipeline. According to the driving mode, the ball valve is divided into: pneumatic ball valve, ...

AI Technical Summary

Problems solved by technology

[0004] The three-way hard-sealed ball valve is a kind of ball valve, which is widely used in the coal chemical industry, petrochemical industry, rubber, papermaking, pharmaceuticals and other pipelines as a diversion and confluence or flow switching device for the medium. However, there are still some existing three-way hard-sealed ball valves. The disadvantage is that the existing three-way hard-sealed ball valves are all manually or electrically driven. Due to the lack of lubrication structure, the ball valve is affected by the harsh environment for a long time, and it is very prone to rust and cannot be opened and closed normally. Carrying out the opening and closing steps, corrosion phenomenon will lead to the decrease of the usability of the three-way hard-sealed ball valve. At the same time, most of the existing three-way hard-sealed ball valves use filter screens, which have poor filtering effect and are inconvenient to disassemble and replace.

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