Anti-freezing sewage collection system and anti-freezing method of same

Abstract

The invention provides an anti-freezing sewage collection system. The anti-freezing sewage collection system comprises a water storage tank, a water supply pipe, a water consuming device and a sewage tank, wherein the water storage tank supplies water to the water consuming device through the water supply pipe. The anti-freezing sewage collection system further comprises a gas supply device for generating compressed gas, wherein a gas supply pipeline of the gas supply device is communicated with the water supply pipe, a valve is arranged on the water supply pipe on the upstream of the communication position, a valve is also arranged on the gas supply pipeline, and the gas supply device can inject the compressed gas into the water supply pipe and empties a water supply pipeline on the downstream of the water supply pipe. The invention further provides a method for emptying the water supply pipeline of the anti-freezing sewage collection system. By means of the anti-freezing sewage collection system, the water supply pipeline can be emptied, residual water in the water supply pipeline is prevented, pipeline blockage caused by the freezing of the residual water are avoided, and therefore a better ant-freezing effect is achieved.

Description

technical field [0001] The invention relates to a sewage collection system, in particular to a sewage collection system which prevents the water supply pipeline from being blocked due to freezing of residual water. Background technique [0002] Sewage collection system or feces collection system has been widely used in airplanes, trains and other means of transportation. The general sewage collection system includes water storage tank, water supply pipe, water use device, sewage discharge device, sewage tank. For water supply, when the water appliance is not used, the valve at the outlet of the water supply pipeline is closed, and there is still a large amount of water remaining in the water supply pipeline. If the train carrying the sewage collection system is in a low temperature environment for a long time, the residual water will freeze, causing The pipes are blocked, or the pipes and devices are cracked by freezing. [0003] At present, there are two ways to solve this...

AI Technical Summary

Problems solved by technology

[0003] At present, there are two types of methods to solve this problem. One is to use heat preservation or heating to heat the pipeline to prevent the residual water from freezing, or to thaw the frozen pipeline. However, due to the complexity of the pipeline, some positions cannot be directly Heating, and the thermal conductivity of the rubber pipe is low. In addition, because the heating time is limited, the thawing is not complete, and the problem cannot be solved fundamentally.

Another anti-freezing method is to rely on the gravity of the residual water. The water from the upstream of the pipeline flows downstream and accumulates at the pipeline outlet. A water volume monitoring device is installed at the pipeline outlet. Solenoid valve, the water in the pipeline is emptied by gravity, and the solenoid valve at the outlet is closed until the monitoring element detects no residual water. This method is affected by gravity, and in complex pipelines, such as U-shaped pipelines , cannot rely on gravity to empty the water at the U-shaped bottom, and there are technical defects

Images