START-UP AND RECEIVING DEVICE OF WASTE TREATMENT PLANTS Russian patent published in 2012 - IPC F17D3/08 B08B9/04 

FIELD: machine building.

SUBSTANCE: device includes the main pipeline (1) on the ends of which there arranged are start-up (2) and receiving (3) chambers of scraper pigs. After start-up chamber (2) and before receiving chamber (3) there arranged are shutoff devices (4) and (5). Start-up chamber (2) is connected via pipeline (6) through shutoff device (7) with supply pipeline (8) of pumped product, which is connected through shutoff device (9) to the main pipeline (1). Receiving chamber (3) is connected via pipeline (10) through shutoff device (11) with discharge pipeline (12) of pumped product, which is connected through shutoff device (13) to the main pipeline (1). In the section of the main pipeline (1) there located is the device connected to the main pipeline with flanges (14), which consists of detachable spool (17) with flanges (18), which is located between shutoff devices (15) and (16) and equipped with partition (19) for receiving and stopping of scraper pigs; at that, diameter of spool is larger than that of the main pipeline (1). Bypass pipeline (20) on which shutoff device (21) is installed is mounted into the main pipeline (1) before and after shutoff devices (15) and (16).

EFFECT: cleaning of internal surface of pipeline in the specified section of long pipeline.

1 dwg