Through-wall antifreezing valve

Abstract

The invention provides a through-wall antifreezing valve, which belongs to the technical field of machinery. The invention solves the current problem that since the water in the tap water pipe cannot be completely drained, the water can be easily frozen under low temperature. The through-wall antifreezing valve is mounted on a wall, and comprises a valve body with a water inlet and a water outlet, a handwheel and a valve rod, the valve rod is mounted in the valve body, the outer end of the valve rod runs through the valve body and is fixedly connected with the handwheel, the valve rod is a hollow tube, the outer end of the valve rod is provided with a drain hole which communicates with the cavity of the valve rod, a check valve is mounted between the valve rod and the water inlet of the valve body, and a back siphonage valve is mounted close to the water outlet in the valve body. The through-wall antifreezing valve has the advantages of simple structure and good antifreezing effect, and is convenient to use.

Description

technical field [0001] The invention belongs to the technical field of machinery, and in particular relates to a wall-crossing antifreeze valve. Background technique [0002] In the northern part of my country, after entering winter, the temperature will drop suddenly at any time, and the lowest temperature will drop below 0 degrees. In the farmer’s yard, in winter, the frozen water pipes will not produce water. In order to ensure the normal operation of the tap water pipes in winter and avoid the freezing of the tap water or even the cracking of the water pipes affecting life and production, the tap water pipes must be anti-freezing treatment, or use hot water hot, or roasted with an open flame, or use cotton, hemp fabric or PE rubber and plastic insulation materials to tightly wrap, wrap and fix water facilities such as exposed water pipes and faucets with sealing tape. Freezes still occur. Contents of the invention [0003] The object of the present invention is to solve...

AI Technical Summary

Problems solved by technology

[0002] In the northern part of my country, after entering winter, the temperature will drop suddenly at any time, and the lowest temperature will drop below 0 degrees. In the farmer’s yard, in winter, the frozen water pipes will not produce water. In order to ensure the normal operation of the tap water pipes in winter and avoid the freezing of the tap water or even the cracking of the water pipes affecting life and production, the tap water pipes must be anti-freezing treatment, or use hot water hot, or roasted with an open flame, or use cotton, hemp fabric or PE rubber and plastic insulation materials to tightly wrap, wrap and fix water facilities such as exposed water pipes and faucets with sealing tape. freeze still occurs

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