Anti-frost type ball valve

Abstract

The invention discloses an anti-frost type ball valve. The anti-frost type ball valve is characterized in that external low temperature of the ball valve is transferred into the ball valve to form temperature difference inside and outside the ball valve, so that water drops are formed at the joint, are gathered and are guided into an anti-frost ball through a water guide pipeline; then quick limeis arranged inside the anti-frost ball to generate heat when meeting water, the generated heat is conducted to a valve rod, thus freezing at the valve rod can be effectively prevented, and quick limecan be reasonably replaced and reserved through a slag pumping hole after complete reaction; and through the generated heat, on one hand, the valve rod is heated, on the other hand, the heat can be effectively conducted to lubricating oil, then the frozen lubricating oil is changed into liquid, and the liquid is guided to the valve rod along with the rotation of the lubricating balls so that the outer surface of the valve rod can be effectively lubricated and protected.

Description

technical field [0001] The invention relates to the field of valves, in particular to a frost-resistant ball valve. Background technique [0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, adjust and control the parameters (temperature, pressure and flow) of the conveying medium; Functions such as reverse flow, voltage stabilization, shunt flow or overflow pressure relief. Valves used in fluid control systems, from the simplest globe valve to various valves used in extremely complex automatic control systems, have a wide variety of varieties and specifications. According to their functions, they can be divided into shut-off valves, check valves, and ball valves. Wait. [0003] 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 f...

AI Technical Summary

Problems solved by technology

[0004] For ball valves used outdoors, it is difficult to perform normal use under severe weather conditions such as rain, snow, dust, wind and sand, and dirt contamination. It is necessary to install a protective cover at the valve stem, but the existing protective cover is only Relying on the thermal insulation properties of the material itself to achieve antifreeze, the antifreeze effect is not ideal, especially in rainy and snowy weather conditions with low temperatures, due to the existence of moisture, it is easy to cause the protective cover and the valve stem to freeze together, thus affecting the valve. The use of rods, and once the existing ball valve is frozen, it can only be thawed by external heating, and cannot be thawed independently, which greatly increases the workload of the staff

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