Step-by-step sewage conveying system

Abstract

The invention discloses a step-by-step sewage conveying system. The step-by-step sewage conveying system comprises a negative pressure collector, wherein the negative pressure collector is connected with a user side drainage pipe, can collect sewage of a user side, and is connected with a negative pressure power center through a step-by-step conveying assembly; the negative pressure power center can enable the inside of the step-by-step conveying assembly to be in a negative pressure state; the step-by-step conveying assembly in the negative pressure state can discharge the sewage in the negative pressure collector; the step-by-step conveying assembly comprises a plurality of sections of negative pressure collecting pipes; each section of negative pressure collecting pipe is inclined; the inclination direction of each section of negative pressure collecting pipe is the same as the flowing direction of the sewage in the corresponding negative pressure collecting pipe; and each two sections of negative pressure collecting pipes are connected through a lifting bend. By the step-by-step conveying assembly, the sewage can be conveyed along the inclined negative pressure collecting pipes, and is lifted by the lifting bends after reaching a certain depth, the sewage conveying efficiency is improved, meanwhile, water loss between the sewage and the pipes is also reduced, and efficient running of the whole negative pressure conveying system is ensured.

Description

technical field [0001] The invention relates to the field of negative pressure drainage systems, in particular to a step-by-step sewage conveying system used in negative pressure drainage systems. Background technique [0002] The working principle of the negative pressure drainage system is to use the vacuum pump to extract the air in the negative pressure power center and the pipe network to form a negative pressure state, and transmit the negative pressure state to the user terminal through the negative pressure collection pipe network, and use the negative pressure to collect the negative pressure in the pipeline. Press to achieve the ability to suck dirt. Through the negative pressure toilet, negative pressure collector, negative pressure pipe, etc., the sewage is transported from the negative pressure sewage pipe network to the negative pressure power center for collection. Compared with the traditional gravity sewage drainage system, the negative pressure drainage sy...

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Problems solved by technology

[0003] However, the negative pressure collection system at this stage has obvious disadvantages. When the system is opened, the gas-liquid ratio inside the pipeline changes and the gas-liquid ratio calculated during the design produces a large error. The setting deviation of the pressure force center has brought a great burden to the operation of the entire negative pressure drainage system

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