Abstract A sewage handling system, a toilet apparatus and a method by which waste may be pumped through a conduit of relatively small internal diameter. Heterogeneous mixtures of waste and flush fluid are emptied through a drain in the bowl portion of the toilet apparatus into a conically blending chamber therebeneath. Blade means are rotated at high speed within the blending chamber to transform the heterogeneous mixture into a homogeneous slurry that is easily transferred through the conduit into the holding tank by a pump means. A common motor drives both the blade means and the pump means, but in order to use a pump means that is low on power consumption some means must be employed to interrupt rotation of the blade means sufficiently to permit the homogeneous slurry to exit from the blending chamber and flood the intake off the pump means. In one embodiment of the invention disclosed this is accomplished by employing a clutch selectively to drive the blade means. Of particular suitability to this embodiment a baffle may be interposed between the blade means and the intake of the pump to minimize turbulence in proximity to the pump intake and thereby assure flooding of the pump intake even when rotation of the blade means is not absolutely precluded during the pumping stage of the flush cycle. In another embodiment a timing means deactivates the motor so as to interrupt rotation of the blade means for a predetermined time interval sufficient to permit the homogeneous slurry to pass from the blending chamber into the intake of the pump.
A sewage handling system comprising, a holding tank, a toilet having a bowl portion with a drain, valve means selectively to open and close said drain, means for admitting flush fluid to said bowl portion, a blending chamber communicating with said bowl portion across said drain for receiving a heterogeneous mixture of waste material, blade means rotatably mounted in said blending chamber for blending said heterogeneous mixture into a homogeneous slurry, pump means, said pump means having an intake communicating with said blending chamber and having an outlet, an imperforate baffle means interposed between said blending chamber and said intake to prevent cavitation therebeneath, a conduit connected between the outlet of said pump and said holding tank, common motor means to power both said blade means and said pump means and means selectively to interrupt blending rotation of said blade means to facilitate the operation of said pump means subsequently to the interruption of the blending rotation of said blade means.
Claim 2
Dependent Claim
161 words
A sewage handling system comprising, a holding tank, a toilet having a bowl portion with a drain, valve means selectively to open and close said drain, means for admitting flush fluid to said bowl portion, a blending chamber communicating with said bowl portion across said drain for receiving a heterogeneous mixture of waste material, blade means rotatably mounted in said blending chamber for blending said heterogeneous mixture into a homogeneous slurry, pump means, said pump means having an intake communicating with said blending chamber and having an outlet, an imperforate baffle means interposed between said blending chamber and said intake to prevent cavitation therebeneath, a conduit connected between the outlet of said pump and said holding tank, common motor means to power both said blade means and said pump means and means selectively to interrupt blending rotation of said blade means to facilitate the operation of said pump means subsequently to the interruption of the blending rotation of said blade means.
Claim 3
Dependent Claim
52 words
A sewage handling system, as set forth in claim 1, in which the means to interrupt blending rotation of said blade means comprises, a clutch means to effect selective connection between said blade means and said motor means while the driving connection between said pump means and said motor means is maintained.