Device in the form of a combined non-return valve and rat killer for internal fitting in a sewer pipe comprising a valve (2), which can swing between an open and a closed position, the valve (2) being able to serve as a seal against possible back-flow (B) and also as a rat killer. The valve (2) is f
Device in the form of a combined non-return valve and rat killer for internal fitting in a sewer pipe comprising a valve (2), which can swing between an open and a closed position, the valve (2) being able to serve as a seal against possible back-flow (B) and also as a rat killer. The valve (2) is fitted with a projection (2a) on its inner side near its lower end and when swinging down, the blow-impact of the valve with the rat (12) can kill it. The valve (2) is operated by an actuator (7), preferably in the form of a voice-coil linear motor, which is controlled by sensors in the sewer pipe. Due to a continuous flow (A) through the sewer pipe, the device will remain clean and thus functional.
대표청구항▼
1. Device comprising a combined non-return valve and rat killer for internal fitting in a piping system including a pipe, where the device comprises a swinging valve, which in a passive position is open in an up-swung position for continuous flow through the pipe and in an active position is closed
1. Device comprising a combined non-return valve and rat killer for internal fitting in a piping system including a pipe, where the device comprises a swinging valve, which in a passive position is open in an up-swung position for continuous flow through the pipe and in an active position is closed in a down-swung position over a bottom end of the pipe, where the valve blocks back-flow, wherein the valve (2, 2a) is pivoted (8) at the top of the pipe (1) and connected to an automated actuator (7) with a reciprocating maneuver rod (6) for swinging the valve (2) between the passive position and the active position in response to signaling indicative of a sensed presence of a rat, and wherein the valve (2) on an inner side near a lower end of the valve is fitted with a projection (2a) with a cross section ending with a sharp or pointed edge to strike and kill or trap a rat sensed in the bottom end of the pipe when the valve is swung-down into the closed, active position after actuation of the valve into the active position is signaled to the automated actuator in the sensed presence of the rat. 2. Device according to claim 1, wherein the automated actuator (7) is signaled by at least one rat sensor to move to the active position. 3. Device according to claim 1, wherein the automated actuator (7) after each down-swinging of the valve (2, 2a) will raise it for free flow (A) through the pipe (1, 1a). 4. Device according to claim 1, wherein the automated actuator (7), in the event of power failure, will disconnect and thus ensure that the valve (2, 2a) can swing freely and thereby serve as a non-return valve. 5. Device comprising a combined non-return valve and rat killer for internal fitting in a piping system including a pipe, where the device comprises a swinging valve, which in a passive position is open for continuous flow through the pipe and in active position is in a down-swung position, where the valve blocks back-flow, wherein the valve (2, 2a) is pivoted (8) at the top of the pipe (1) and connected to an actuator (7) with a reciprocating maneuver rod (6) for swinging the valve (2) between an open and a closed position and wherein the valve (2) on an inner side near a lower end of the valve is fitted with a projection (2a) with a cross section ending with a sharp or pointed edge, wherein the actuator (7) is an electrically driven voice-coil linear motor, which can be set to a uniform motion speed, a variable motion speed, a vibrating motion, or any combination thereof. 6. Device according to claim 5, wherein the actuator (7), in the event of power failure, will disconnect and thus ensure that the valve (2, 2a) can swing freely and thereby serve as a non-return valve. 7. Device comprising a combined non-return valve and rat killer for internal fitting in a piping system including a pipe, where the device comprises a swinging valve, which in a passive position is open for continuous flow through the pipe and in active position is in a down-swung position, where the valve blocks back-flow, wherein the valve (2, 2a) is pivoted (8) at the top of the pipe (1) and connected to an actuator (7) with a reciprocating maneuver rod (6) for swinging the valve (2) between an open and a closed position and wherein the valve (2) on an inner side near a lower end of the valve is fitted with a projection (2a) with a cross section ending with a sharp or pointed edge, wherein the actuator (7) is controlled by at least one sensor in the pipe, and wherein a control is responsive to a signal from the sensor for providing a signal to the actuator (7) when a rat is sensed approaching to start a partial speed down-swinging of the valve (2, 2a) and when the rat is sensed in position to complete the down-swinging of the valve (2, 2a) with full speed and force to kill or trap the rat. 8. Device according to claim 7, wherein the actuator (7), in the event of power failure, will disconnect and thus ensure that the valve (2, 2a) can swing freely and thereby serve as a non-return valve.
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이 특허에 인용된 특허 (3)
Coscarella, Gabe, Backwater valve with control linkage.
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