Frost crack prevention device for water supply pipe fitting equipment

Abstract

The invention discloses a frost crack prevention device for water supply pipe fitting equipment, which is characterized in that water (500) accumulated in a water flow channel of the water supply pipe fitting equipment is filled with elastic, soft, water-free and pressure-counteracting sheet, block, strip, ball, pipe-shaped and layered pressing rubber bodies (700), particularly silicone rubber bodies, when the water (500) is frozen into ice (600), the volume of the ice (600) expands, and the ice (600) is frozen into the water flow channel of the water supply pipe fitting equipment. In a hard shell with a certain volume, the pressing rubber body (700) arranged in the pipe fitting equipment is extruded, so that the volume of the pressing rubber body (700) is reduced, and the inner supporting pressure of ice expansion on the shell of the pipe fitting equipment is relieved and counteracted, so that the water supply pipe fitting equipment is protected, the shell of the water supply pipe fitting equipment is prevented from being cracked by ice, and the service life of the water supply pipe fitting equipment is prolonged. The pressing device is characterized in that the pressing rubber body (700) is solid, and the pressing device has the advantages of being simple in structure, long in service life, free of mechanical faults, free of maintenance, good in repeated use performance and low in production and use cost.

Description

technical field [0001] The invention relates to an anti-freeze cracking device for pipe fittings such as water supply pipes, valves, faucets, water meters and water tanks. Background technique [0002] The cross-section of the pipe fittings such as hard water pipes, valves, faucets, water meters, and water tanks used to transport water is closed, and the longitudinal section is also closed when the waterway is closed. When the temperature is below 0 °C, it begins to freeze. After the water freezes, the volume will increase, and the hard water pipe will shrink, and cracks will be formed by the ice in the water pipe. In addition, the hard plastic pipe and steel pipe will become brittle at low temperature, and the pressure resistance will drop sharply. The ice produces a great expansion force. As the temperature decreases, when the expansion force exceeds the ultimate strength of the hard pipe, it will freeze the water pipe and water meter, causing the valve, faucet, and water ...

AI Technical Summary

Problems solved by technology

[0005] The above two technical schemes all use the spring piston pressure relief protection device installed in the pipe fitting equipment. The structure of these two devices is relatively complicated, and the service life is short, mechanical failure is prone to occur, and the cost is also high; in addition, the main thing is At low temperature, the piston of the compression component will also be frozen to death, and lose its antifreeze protection function, and cannot prevent frost cracking

[0006] The third technical solution: the anti-freezing rubber body used in my patent No. 201921119900.2 "Anti-freeze cracking device for water supply pipe fittings" is hollow with air bubbles, but the processing cost of the hollow rubber body is high, and the production process is complicated. After being pressed, it cannot return to the elasticity and volume before the pressurization, so that the function of resisting the pressure after repeated use is getting worse and worse. Finally, because of the loss of elasticity, it cannot offset the expansion pressure of the ice.

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