Vacuum sewer system

• US 20070226887A1
• Filed: 02/09/2007
• Published: 10/04/2007
• Est. Priority Date: 03/31/2006
• Status: Active Grant

• Current Assignee: Evac Oy
• Original Assignee: Evac International Oy
• Inventors: Ronnblad, Kaj, Lappalainen, Vesa, Lindroos, Gunnar
• Granted Patent: US 7,770,241 B2
• Time in Patent Office: Days
• US Class Current: 4/431
• CPC Class Codes: E03D 11/00 Other component parts of water-closets pipe-joints or couplings in general F16L , e.g. noise-reducing means in the flushing system noise-reducing means in combination with flushing valves E03D9/14, flushing pipes mounted in the bowl, seals for the bowl outlet, devices preventing overflow of the bowl contents; devices forming a water seal in the bowl after flushing, devices eliminating obstructions in the bowl outlet or preventing backflow of water and excrements from the waterpipe
• CPC Class Codes: E03D 9/14 Noise-reducing means combined with flushing valves noise-absorbing means in pipe systems F16L55/00 ; if not in combination with flushing valves E03D11/00; noise-reducing means in valves in general F16K47/00
• CPC Class Codes: E03F 1/006 Pneumatic sewage disposal systems; accessories specially adapted therefore

Abstract

The present invention relates to a sewer system comprising a sewage receptacle (1), sewer piping (3) connected to the sewage receptacle by means of a discharge valve (2), a vacuum generating means (4) for generating vacuum in the sewer piping, and a control mechanism (5) for controlling the discharge valve. In order to achieve a more rapid closing of the discharge valve (2) after discharge of the sewage from the sewage receptacle (1), the vacuum sewer system further comprises an aeration means (10) in direct fluid communication with the discharge valve (2). The control mechanism (5) is arranged to control the aeration means (10). The present invention also relates to a discharge valve (2) for such a vacuum sewer system.

Claims

1. A vacuum sewer system comprising a sewage receptacle, sewer piping connected to the sewage receptacle by means of a discharge valve, a vacuum generating means for generating vacuum in the sewer piping, and a control mechanism for controlling the discharge valve, wherein the vacuum sewer system further comprises an aeration means, which is arranged to provide a direct fluid communication to the discharge valve, and in that the control mechanism is arranged to control the aeration means.

2. The vacuum sewer system according to claim 1, wherein the aeration means is arranged to supply air to the discharge valve for rapidly closing the discharge valve after a discharge or flushing sequence, and in that the aeration means is arranged to be closed when the discharge valve is provided with vacuum for opening the same for the discharge or flushing sequence.

3. The vacuum sewer system according to claim 2, wherein the function of the aeration means is pneumatically governed.

4. The vacuum sewer system according to claim 2, wherein the function of the aeration means is electrically governed.

5. The vacuum sewer system according to claim 2, wherein the aeration means comprises a vent valve, which is attached to the discharge valve and connected to the control mechanism by means of a fourth conduit, and in that the aeration means is provided with an aeration nozzle.

6. The vacuum sewer system according to claim 5, wherein the aeration means is arranged to be opened by vacuum provided from the discharge valve by way of a second conduit through the control mechanism and further through the fourth conduit to the aeration means in order to provide air to the discharge valve for rapidly closing the discharge valve after the discharge or flushing sequence, and in that the aeration means is arranged to be closed with a given delay after said discharge or flushing sequence by air provided through the aeration nozzle.

7. The vacuum sewer system according to claim 2, wherein the aeration means comprises a vent valve, which is arranged in connection with the discharge valve and connected to the control mechanism by means of a fourth conduit, and in that a fifth conduit is provided between the aeration means and the discharge valve.

8. The vacuum sewer system according to claim 7, wherein the aeration means is arranged to be opened by air provided by way of the fourth conduit through an aeration valve in the control mechanism in order to provide air to the discharge valve for rapidly closing the discharge valve after the discharge or flushing sequence, and in that the aeration means is arranged to be closed by vacuum available in the control mechanism and provided by way of the fourth conduit.

9. The vacuum sewer system according to claim 4, wherein the aeration means comprises a vent valve, which is attached to the discharge valve, and in that the control mechanism is arranged to control the aeration means by way of a sensor device and a magnetic valve connected to the aeration means.

10. The vacuum sewer system according to claim 9, wherein the aeration means is arranged to be opened by the magnetic valve when the sensor device reads that the vacuum connection to the discharge valve through the control mechanism is switched off in order to provide air to the discharge valve for rapidly closing the discharge valve after the discharge or flushing sequence, and in that the aeration means is arranged to be closed when the sensor device reads that the vacuum connection to the discharge valve through the control mechanism is switched on.

11. A discharge valve for a vacuum sewer system comprising a sewage receptacle, sewer piping and a vacuum generating means for generating vacuum in the sewer piping, whereby the discharge valve is arranged between the sewage receptacle and the sewer piping and controlled by a control mechanism, wherein the discharge valve is provided with an aeration means, which is arranged to provide a direct fluid communication to the discharge valve, and in that the control mechanism is arranged to control the aeration means.

12. The discharge valve according to claim 11, wherein the aeration means is arranged to supply air to the discharge valve for rapidly closing the discharge valve after a discharge or flushing sequence, and in that the aeration means is arranged to be closed when the discharge valve is provided with vacuum for opening the same for the discharge or flushing sequence.

13. The discharge valve according to claim 12, wherein the function of the aeration means is pneumatically governed.

14. The discharge valve according to claim 12, wherein the function of the aeration means is electrically governed.

15. The discharge valve according to claim 12, wherein the aeration means comprises a vent valve, which is attached to the discharge valve and connected to the control mechanism by means of a fourth conduit, and in that the aeration means is provided with an aeration nozzle.

16. The discharge valve according to claim 15, wherein the aeration means is arranged to be opened by vacuum provided from the discharge valve by way of a second conduit through the control mechanism and further through the fourth conduit to the aeration means in order to provide air to the discharge valve for rapidly closing the discharge valve after the discharge or flushing sequence, and in that the aeration means is arranged to be closed with a given delay after said discharge or flushing sequence by air provided through the aeration nozzle.

17. The discharge valve according to claim 12, wherein the aeration means comprises a vent valve, which is arranged in connection with the discharge valve and connected to the control mechanism by means of a fourth conduit, and in that a fifth conduit is provided between the aeration means and the discharge valve.

18. The discharge valve according to claim 17, wherein the aeration means is arranged to be opened by air provided by way of the fourth conduit through an aeration valve in the control mechanism in order to provide air to the discharge valve for rapidly closing the discharge valve after the discharge or flushing sequence, and in that the aeration means is arranged to be closed by vacuum available in the control mechanism and provided by way of the fourth conduit.

19. The discharge valve according to claim 14, wherein the aeration means comprises a vent valve, which is attached to the discharge valve, and in that the control mechanism is arranged to control the aeration means by way of a sensor device and a magnetic valve connected to the aeration means.

20. The discharge valve according to claim 19, wherein the aeration means is arranged to be opened by the magnetic valve when the sensor device reads that the vacuum connection to the discharge valve through the control mechanism is switched off in order to provide air to the discharge valve for rapidly closing the discharge valve after the discharge or flushing sequence, and in that the aeration means is arranged to be closed when the sensor device reads that the vacuum connection to the discharge valve through the control mechanism is switched on.