VACUUM DEVICE AND TOILET WITH VACUUM SYSTEM INCLUDING THIS DEVICE Russian patent published in 1999 - IPC

FIELD: sanitary equipment. SUBSTANCE: device is intended for creating, maintaining and removing vacuum in reservoir for collection and subsequent transportation of waste and it can be used in toilets equipped with vacuum system. Vacuum device has two valves 4, 6, ejector 10 with inlet nozzle 10a, outlet pipe connection 10b, and vacuum passage 10c. Ejector is connected with first valve 4 through inlet nozzle and with first operating unit U1 through vacuum passage. Piston-type control valve 16 has first inlet 16a, second inlet 16b, and outlet 16c. First inlet connects piston-type control valve with outlet pipe union of ejector. Second inlet connects piston-type control valve with second valve 6. Outlet connects piston-type control valve with second operating unit U2 of vacuum device. Non-return valve 17 is installed between outlet of piston-type control valve 16c and second operating unit of vacuum device U2. Overflow valve connects second valve with second inlet 16b of piston-type control valve and with inlet of ejector 10d which is located at right angle with respect to inlet of ejector nozzle and to outlet pipe union of ejector. Valves 4, 6 can be connected to one and same source of compressed air through common inlet. Aforesaid embodiment of vacuum device possesses characteristic of self-cleaning, it is light in weight and simple in mounting. EFFECT: higher efficiency. 9 cl, 4 dwg