Vacuum toilet system and discharge valve thereof
First Claim
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1. A discharge valve for a vacuum toilet system having an open position and a closed position, said discharge valve comprising:
- (a) a valve body having an entry opening and an exit opening, and defining a valve housing having a longitudinal axis generally normal to axes defined by the entry and exit openings;
(b) a valve stop in said valve body not located along the longitudinal axis of the valve housing;
(c) a valve plunger disposed within the valve housing for reciprocating movement relative to said valve stop to alternatively open and close said discharge valve in response to a pressure condition communicated to said discharge valve, said plunger having a first end and a second end opposite said first end, said valve plunger having seating means connected to the first end of said plunger matable with said valve stop to provide liquid and air-tight closure of said discharge valve when it is in the closed position, a piston operator being operatively connected to the second end of said valve plunger; and
(d) control means operatively connected to said valve plunger for regulating the reciprocated movement of said valve plunger in an arc between the open and closed positions of said discharge valve.
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Abstract
A vacuum toilet system for efficient transport of waste material from a toilet bowl to a collection station by means of differential pressure, comprising an actuator button, a discharge valve, a water valve, and a controller valve. The various valves are simple in construction and operate on the basis of pneumatic pressure. The system is compact enough to fit into the cabinet of a conventional toilet fixture.
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Citations
7 Claims
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1. A discharge valve for a vacuum toilet system having an open position and a closed position, said discharge valve comprising:
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(a) a valve body having an entry opening and an exit opening, and defining a valve housing having a longitudinal axis generally normal to axes defined by the entry and exit openings; (b) a valve stop in said valve body not located along the longitudinal axis of the valve housing; (c) a valve plunger disposed within the valve housing for reciprocating movement relative to said valve stop to alternatively open and close said discharge valve in response to a pressure condition communicated to said discharge valve, said plunger having a first end and a second end opposite said first end, said valve plunger having seating means connected to the first end of said plunger matable with said valve stop to provide liquid and air-tight closure of said discharge valve when it is in the closed position, a piston operator being operatively connected to the second end of said valve plunger; and (d) control means operatively connected to said valve plunger for regulating the reciprocated movement of said valve plunger in an arc between the open and closed positions of said discharge valve. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification