PURPOSE: To utilize a self-suction pump as a vacuum pump and facilitate maintenance and management at a low cost without requiring airtightness by intermittently or continuously automating the priming to the self-suction pump.
CONSTITUTION: Water is filled into the negative pressure side including part of the suction pipe 10 of a self-suction pump 1 through a water feed pipe 12, when the filling of the priming is completed, the water feed pipe 12 is closed, the self-suction pump 1 is started, water is discharged through a discharge pipe 15, when the priming is insufficient, the self-suction pump 1 is stopped. The water feed pipe 12 is again opened, water is filled into the negative pressure side including part of the suction pipe 10 of the self-suction pump 1, the water feed pipe 12 is closed, the self-suction pump 1 is started, and these actions are repeated. When the completion of the air extraction of the suction pipe 10 is detected via the stabilization of the discharge pressure, the water feed pipe 12 is closed and the self-suction pump 1 is stopped automatically. The priming to the self-suction pump 1 is intermittently or continuously automated, thus the self-suction pump 1 can be utilized as a vacuum pump.
JPS63285287A | 1988-11-22 | |||
JPS62190891U | 1987-12-04 | |||
JPS5235501U | 1977-03-12 | |||
JPS61247890A | 1986-11-05 | |||
JPS5353007A | 1978-05-15 | |||
JPS61126098U | 1986-08-07 | |||
JPS5015112A | 1975-02-18 |
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