PURPOSE: To secure the valve operation having high reliability with a simple structure by constituting a mixing valve provide so as to be communicated with a pump unit from a valve element to be operated through a diaphragm and for sealing a valve seat, in a pump station for partially constituting a municipal sewage device.
CONSTITUTION: In a submerged pump unit 2 connected to a pressure pipe 3, a mixing valve 6 is provided on a pump housing 4 having an inlet 5. This mixing valve 6 is provided with a cylindrical part 7 and an outlet nozzle 8, and a bellow 14 is provided so as to be communicated with the cylindrical part. The bellow 14 surrounds a valve cup 12, the valve cup 12 houses a diaphragm 11 having a valve ball 9, and the valve ball 9 closed the cylindrical part 7 when it is separated from the diaphragm 11 and pressed against a seat 10 of the cylindrical part 7. An opening 13 for allowing oil as a damping medium housed in the bellow 14 to flow is formed in a space between the valve cup 12 and the diaphragm 11.
JPS6439430A | 1989-02-09 | |||
JPS63161921U | 1988-10-21 | |||
JPS4946309U | 1974-04-23 | |||
JPS5828170U | 1983-02-23 |