Waste Water Tank of a Portable Multifunctional Toilet Having a Liquid Level Display Structure and an Exhaust Valve

Abstract

A waste water tank of a portable multifunctional toilet is provided. The waste water tank is a container having a tank body, and is provided with a liquid level display structure and an exhaust valve. The display structure comprises a buoyant support that is provided in the tank body at a position where it can not be touched by a long and straight article such as a brush entered from the outlet of the tank, the buoyant support is rotated about a buoyant support shaft which serves as a pivot shaft, and is sealed at the pivot shaft; the display structure further comprises a cone wheel provided at a contour of a upper edge of the tank body; the buoyant support applies magnetic force to the cone wheel through a wall of the tank body, the cone wheel is rotated by the rotational motion of the buoyant support so as to display the amount and the height of the content; the exhaust valve is arranged at the front part of the contour on the same side of the display structure, at a position where it can be conveniently operated by a person sitting on the toilet, the valve is a self-sealing structure comprising a spring and a sealing plate inside a sealing plug, wherein a channel of the exhaust valve is opened by downwardly pressing an exhaust button.

1 . A waste water tank of a portable multifunctional toilet with a liquid level display structure and an exhaust valve, characterized in that:
 the waste water tank is a container with a small-opening for containing filth, and has a tank body;   the liquid level display structure comprises a buoyant support that is provided in the tank body at a position where it can not be touched by a long and straight article such as a brush entered from an outlet, the buoyant support is rotated about a buoyant support shaft which serves as a pivot shaft, and is sealed at the pivot shaft reliably;   the liquid level display structure further comprises a cone wheel provided at a contour of a upper edge of the tank body;   the buoyant support applies a magnetic force to the cone wheel through a wall of the tank body, the cone wheel is rotated by the rotational motion of the buoyant support so as to display the amount and the height of the content in the waste water tank;   the exhaust valve is arranged at the front part of the contour of the upper edge on the same side of the liquid level display structure, at a position where it can be conveniently operated by a person sitting on the toilet,   the exhaust valve has a self-sealing structure comprising a spring and a sealing plate inside a sealing plug, wherein a channel of the exhaust valve is opened by downwardly pressing an exhaust button of the exhaust valve.   
     
     
         2 . The waste water tank according to  claim 1 , characterized in that:
 when the waste water tank is molded, a sealing structure, a screw structure and a non-return structure with a ratchet wheel, corresponding to the mounting structure of the cone wheel, the mounting structure of the buoyant support shaft and the mounting structure of the exhaust valve, are blow molded in one step by a mold at the same time.   
     
     
         3 . The waste water tank according to  claim 2 , characterized in that:
 a sealing plug for mounting holes of the buoyant support shafts having:   a plug pin having a cylindrical end portion between the buoyant support shafts, so that the buoyant support shafts are axially and radially positioned in the axle seats;   a structure for mounting the sealing ring and a corresponding screw structure;   an inner-pentagon irregular-shaped structure at one screwed down end of the sealing plug to be prevented from being screwed off by a common tool at will;   a non-return structure with a ratchet wheel corresponding to a non-return structure with a ratchet wheel pre-molded on the tank body, so that the sealing plug does not release after being mounted at an appropriate position.   
     
     
         4 . The waste water tank according to  claim 2 , characterized in that:
 the cone wheel having:   a nonreversible mounting structure when mounted with the tank body;   a magnet and a balancing weight symmetrical with the magnet so that the cone wheel operates symmetrically and sensitively; and   a scale mark, the left side of which is in green and the right side in red;   wherein the cone wheel is rotated from left to right.   
     
     
         5 . The waste water tank according to  claim 4 , characterized in that:
 a transparent window is reserved at a position of the cone wheel, with a first schematic of being not full inscribed at the upper left portion of the window, a second schematic of being half full inscribed at the middle upper portion of the window, and a third schematic of being full inscribed at the upper right portion of the window, so as to display the height of the content together with the scale mark.   
     
     
         6 . The waste water tank according to  claim 1 , characterized in that:
 the sealing plug comprising a structure for mounting the sealing ring and a corresponding screw structure, a venthole and a structure for mounting a sealing plate, and a positioning mounting structure for a built-in spring, so that the sealing plug is in a self-sealing state when the waste water tank is in a normal state;   the sealing plug further comprising an inside screw down structure and a screwed non-return structure with a ratchet wheel.