Excrement collection system and excrement collection method

Abstract

The invention discloses an excrement collection system and an excrement collection method. In a standby state, an air cylinder is disconnected from a toilet bowl and an excrement collection box, and negative pressure is produced in an excrement guide pipe by the air cylinder; in the process of use, when a flushing valve of the toilet bowl is pressed, excrement in the toilet bowl can be absorbed into the air cylinder temporarily by communicating the air cylinder with the toilet bowl; then, the air cylinder is disconnected from the toilet bowl and is communicated with the excrement collection box, and the excrement in the air cylinder is pushed into the excrement collection box by a piston in the air cylinder; at last, the air cylinder is disconnected from the excrement collection box and returns to the standby state, and the process is repeated according to the method. The excrement collection system and the excrement collection method have the advantages that operation is simple, and most importantly, the problem that bad air in the excrement collection box can be exhausted to a washroom through the excrement guide pipe in the flushing process is solved.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a feces collection system and a feces collection method on rail cars or passenger cars. Background technique [0002] The feces collection system is an essential waste treatment system in trains or long-distance buses. The existing treatment method is mainly to set up a vacuum generator to generate negative pressure in the waste collection box to suck away the waste in the toilet, such as figure 1 As shown, a third solenoid valve 12 is provided on the waste discharge pipe 3 between the toilet 2 and the waste collection tank 6 connected to the vacuum generator 11 . In the standby state, the third electromagnetic valve 12 is closed, and the vacuum generator 11 pumps the space above the dirt collection box 6 into a negative pressure state; The dirt is flushed into the dirt collecting tank, and then the third electromagnetic valve 12 is closed, so it is used repeatedly. Because the ...

AI Technical Summary

Problems solved by technology

Because the existing feces collection system is a vacuum-maintaining type, the dirt collection box 6 needs to maintain a negative pressure state, so the panel of the sewage collection box 6 needs to be thickened, and the sealing performance is also required to be higher, the cost will be much higher, and the weight will also increase. In addition, due to the long standby time, the dirt tank or the third stop valve will leak, resulting in insufficient negative pressure, forcing the vacuum generator to work again, increasing its use times, thereby reducing its service life, and more importantly It increases the gas consumption and electricity consumption, and it is not easy to maintain

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