Vacuum valve controller for vacuum sewer system.

摘要

A vacuum valve controller for a vacuum sewer system including a suction pipe (12) which is communicated with a vacuum system (15) by opening a vacuum valve (14), and which is cut off from the vacuum system by closing the vacuum valve (14) is disclosed. Soil water in a soil water basin (10) is sucked through the suction pipe (12) and sent to a predetermined place by opening the vacuum valve (14). The vacuum valve controller is provided with a control device (20) which closes the vacuum valve (14) by detecting that the suction pipe has begun to suck air from a change of the pressure difference between two points (16 and 17) in the suction pipe (12) which are different in height from each other, which provide a vacuum valve controller for a vacuum sewer system, which is simple in structure, easy to maintain and capable of stable operation.