Sewer bypass device

Abstract

To provide a compact sewer bypass device capable of reducing operation costs and introduction costs during sewerage work.SOLUTION: A sewer bypass device 100 has: a vacuum tank 10; a vacuum pump 20 that suctions sewage into the vacuum tank 10; a discharge pump 30 that discharges sewage from the vacuum tank 10; a suction tube 40 that connects a first sewage basin 1 and the vacuum tank 10; a discharge line 50 that connects the vacuum tank 10 and a second sewage basin 2; first water level detection means 60 that detects a water level of the first sewage basin 1; second water level detection means 70 that detects a water level of the vacuum tank 10; and control means 80. The control means 80 operates the vacuum pump 20 to suction sewage from the first sewage basin 1 into the vacuum tank 10 when the first water level detection means 60 detects a predetermined water level, and operates the discharge pump 30 to discharge sewage from the vacuum tank 10 into the second sewage basin 2 when the second water level detection means 70 detects a predetermined water level.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a sewer bypass device. [Background technology]

[0002] Traditionally, when repairing or replacing sewer pipes, it is necessary to stop wastewater discharged from each household from flowing into the sewer pipes in the area being repaired during the work period. This requires temporary drainage from the in-house manholes that collect wastewater from the toilet, bath, kitchen, etc. into the main sewer pipe.

[0003] For example, Patent Document 1 describes an invention relating to a temporary drainage method for sewage, in which wastewater from a domestic manhole 3 is sucked up by a vacuum pump and discharged into a sewer pipe X, thereby bypassing the sewer pipe in the section to be constructed. By separately providing a vacuum device unit 1 and a vacuum tank unit 2, temporary drainage can be performed from the domestic manholes of many homes, making it possible to handle large-scale construction work on sewer pipes.

[0004] Furthermore, in order to perform suction by the vacuum pump from the indoor manhole 3 in accordance with the amount of wastewater discharged, an automatic vacuum on-off valve device 4 is installed in the indoor manhole 3, and the vacuum valve opens and closes automatically depending on the amount of wastewater in the indoor manhole 3. Similarly, Patent Documents 2 to 4 describe inventions relating to various automatic vacuum on-off devices installed in indoor manholes. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-009570 [Patent Document 2] Japanese Patent Application Laid-Open No. 2013-234423 [Patent Document 3] Japanese Patent Application Laid-Open No. 2013-234492 [Patent Document 4] Japanese Patent Application Laid-Open No. 2014-114589 Summary of the Invention [Problem to be solved by the invention]

[0006] However, although the temporary sewer drainage method described in Patent Document 1 can handle large-scale sewer pipe construction work targeting many households, the vacuum device unit and vacuum tank unit must be installed separately, which increases the size of the device and the implementation costs.

[0007] Furthermore, since the vacuum device unit is constantly in operation and the suction of wastewater is controlled by opening and closing an automatic vacuum on-off valve device installed in the indoor manhole, there are problems with the operating costs and noise of the vacuum device unit.Furthermore, an automatic vacuum on-off valve device (similar to the automatic vacuum on-off devices in Patent Documents 2 to 4) must be installed in the indoor manhole, which increases the introduction costs.

[0008] The present invention solves the above-mentioned conventional problems, and provides a sewerage bypass device that is compact and can reduce operating costs and installation costs when carrying out sewerage construction work. [Means for solving the problem]

[0009] In order to solve the above problems, the sewer bypass device of the present invention is a sewer bypass device that bypasses a sewer pipe between a first sewage manhole and a second sewage manhole and drains water from the first sewage manhole to the second sewage manhole, and includes a vacuum tank, a vacuum pump that sucks sewage into the vacuum tank, a discharge pump that discharges sewage in the vacuum tank, a suction pipe that connects the first sewage manhole and the vacuum tank, a discharge pipe that connects the vacuum tank and the second sewage manhole, and a pump that drains sewage from the first sewage manhole to the second sewage manhole. The apparatus has a first water level detection means for detecting the water level, a second water level detection means for detecting the water level in the vacuum tank, and a control means, and when the first water level detection means detects a predetermined water level, the control means operates the vacuum pump to suck wastewater from the first wastewater manhole into the vacuum tank via the suction pipe, and when the second water level detection means detects a predetermined water level, it operates the discharge pump to discharge wastewater from the vacuum tank into the second wastewater manhole via the discharge pipe.

[0010] Preferably, at least one of the first water level detection means and the second water level detection means is a float-type sensor.

[0011] Preferably, the first sewage inlet is a residential inlet, and the second sewage inlet is a public inlet. [Effects of the Invention]

[0012] The sewer bypass device of the present invention drains water from a first sewage manhole to a second sewage manhole, bypassing the sewer pipe between the first and second sewage manholes, and includes a vacuum tank, a vacuum pump that sucks sewage into the vacuum tank, a discharge pump that discharges sewage from the vacuum tank, a suction pipe that connects the first sewage manhole and the vacuum tank, a discharge pipe that connects the vacuum tank and the second sewage manhole, a first water level detection means that detects the water level in the first sewage manhole, a second water level detection means that detects the water level in the vacuum tank, and a control means.

[0013] The wastewater can then be routed around the sewer pipe being worked on, via the first sewage manhole → suction pipe → vacuum tank → discharge pipe → second sewage manhole.

[0014] When the first water level detection means detects a predetermined water level, the control means operates the vacuum pump to suck sewage from the first sewage manhole into the vacuum tank via the suction pipe, so that sewage does not overflow from the first sewage manhole and, since the vacuum pump does not operate when the water level in the first sewage manhole is low, operating costs are low.

[0015] In addition, when the second water level detection means detects a predetermined water level, the control means operates the discharge pump to discharge wastewater from the vacuum tank through the discharge pipe into the second wastewater manhole, so wastewater does not overflow from the vacuum tank, and the discharge pump does not operate when the water level in the vacuum tank is low, resulting in low operating costs.

[0016] In addition, there is no need to install an automatic vacuum on-off valve device like in the conventional system in the first sewage manhole, and the device can be made smaller, so the introduction cost is low.

[0017] Furthermore, at least one of the first water level detection means and the second water level detection means can be a float-type sensor to detect the water level.

[0018] In addition, it can be applied to the construction of sewer pipes (outflow pipes) between a home's indoor manhole and a public manhole, with the first manhole being a residential manhole and the second manhole being a public manhole.

[0019] As described above, according to the present invention, it is possible to provide a sewerage bypass device that is compact and can reduce the operating costs and introduction costs when carrying out sewerage construction work. [Brief explanation of the drawings]

[0020] [Figure 1] 1 is a configuration diagram of a sewer bypass device according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0021] Next, a sewer bypass device according to an embodiment of the present invention will be described with reference to Fig. 1. Fig. 1 is a configuration diagram of a sewer bypass device 100 according to this embodiment.

[0022] A first sewage manhole 1 (hereinafter also referred to as "indoor manhole 1"), a second sewage manhole 2 (hereinafter also referred to as "public manhole 2"), and a sewer pipe 3 (hereinafter also referred to as "outflow pipe 3") connecting the indoor manhole 1 and the public manhole 2 are buried in the ground 8. The sewer bypass device 100 is used when carrying out construction of the outflow pipe 3, and is a device for draining water from the indoor manhole 1 to the public manhole 2 by bypassing the outflow pipe 3 between the indoor manhole 1 and the public manhole 2.

[0023] Inlet pipes 4 and 5 are connected to the indoor manhole 1, and sewage from the household toilet, bath, kitchen, etc. flows in. In addition, a sewer pipe 6 (main pipe) is connected to the public manhole 2, and sewage from the indoor manhole 1 flows into the sewer pipe 6 (main pipe).

[0024] The sewer bypass device 100 comprises a vacuum tank 10, a vacuum pump 20, a discharge pump 30, a suction pipe 40, a discharge pipe 50, a first water level detection means 60, a second water level detection means 70, and a control means 80.

[0025] The vacuum tank 10 is located midway between the residential manhole 1 and the public manhole 2, and is connected to a vacuum pump 20 to suck and store wastewater into the tank. A discharge pump 30 (submersible pump) is installed inside the vacuum tank 10, and the discharge pump 30 is used to discharge the wastewater from the tank.

[0026] The indoor manhole 1 and the vacuum tank 10 are connected by a suction pipe 40. One end of the suction pipe 40 opens into the indoor manhole 1, and the other end of the suction pipe 40 opens into the vacuum tank 10.

[0027] The vacuum tank 10 and the public manhole 2 are connected by a discharge pipe 50. One end of the discharge pipe 50 opens into the vacuum tank 10, and the other end of the discharge pipe 50 opens into the public manhole 2. The discharge pipe 50 is provided with a check valve 90 to prevent backflow of wastewater when the vacuum pump 20 is suctioning.

[0028] A first water level detection means 60 is provided in the indoor manhole 1 to detect the level of sewage in the indoor manhole 1. The first water level detection means 60 in this embodiment is a float-type sensor, and the float moves up and down depending on the level of sewage in the indoor manhole 1.

[0029] A second water level detection means 70 is provided inside the vacuum tank 10 and is configured to detect the level of wastewater inside the vacuum tank 10. The second water level detection means 70 in this embodiment is a float-type sensor, and the float moves up and down depending on the level of wastewater inside the vacuum tank 10.

[0030] The control means 80 is connected to the power source 9 and controls the power supply to the vacuum pump 20 and the discharge pump 30. The control means 80 is connected to the first water level detection means 60 in the indoor manhole 1, and when the first water level detection means 60 detects a predetermined water level, it operates the vacuum pump 20 to suck wastewater from the indoor manhole 1 into the vacuum tank 10 via the suction pipe 40. The control means 80 is also connected to the second water level detection means 70 in the vacuum tank 10, and when the second water level detection means 70 detects a predetermined water level, it operates the discharge pump 30 to discharge wastewater from the vacuum tank 10 into the public manhole 2 via the discharge pipe 50.

[0031] The control means 80 can be a known device such as a control panel, but is not particularly limited as long as it can control the operation of the vacuum pump 20 and the discharge pump 30 based on the water level detected by the first water level detection means 60 and the second water level detection means 70. Furthermore, the control means for operating the vacuum pump 20 and the control means for operating the discharge pump 30 can be configured as separate entities rather than being integrated.

[0032] When constructing the outflow pipe 3, a stop valve 7 is installed in the outflow pipe 3 to prevent sewage from flowing out of the manhole 1 inside the house.

[0033] The sewerage bypass device 100 of this embodiment drains water from the indoor manhole 1 to the public manhole 2, bypassing the outflow pipe 3 between the indoor manhole 1 and the sewage manhole 2, and includes a vacuum tank 10, a vacuum pump 20 that sucks sewage into the vacuum tank 10, a discharge pump 30 that discharges sewage from the vacuum tank 10, a suction pipe 40 that connects the indoor manhole 1 and the vacuum tank 10, a discharge pipe 50 that connects the vacuum tank 10 and the public manhole 2, a first water level detection means 60 that detects the water level in the indoor manhole 1, a second water level detection means 70 that detects the water level in the vacuum tank 10, and a control means 80.

[0034] The wastewater can then be discharged via the route of the in-house manhole 1 → suction pipe 40 → vacuum tank 10 → discharge pipe 50 → public manhole 2, bypassing the outflow pipe 3 that is the subject of construction.

[0035] When the water level detection means 60 in the indoor manhole 1 detects a predetermined water level, the control means 80 operates the vacuum pump 20 to suck wastewater from the indoor manhole 1 into the vacuum tank 10 via the suction pipe 40, so that wastewater does not overflow from the indoor manhole 1, and the vacuum pump 20 does not operate when the water level in the indoor manhole 1 is low, thereby reducing operating costs.

[0036] In addition, when the water level detection means 70 of the vacuum tank 10 detects a predetermined water level, the control means 80 operates the discharge pump 30 to discharge wastewater from the vacuum tank 10 through the discharge pipe 50 into the public manhole 2, so wastewater does not overflow from the vacuum tank 10, and the discharge pump 30 does not operate when the water level in the vacuum tank 10 is low, so operating costs are low.

[0037] Furthermore, there is no need to install an automatic vacuum on-off valve device in the indoor manhole 1 as in the past, and the device can be made smaller, so the introduction cost is low.

[0038] Furthermore, the first water level detection means 60 and the second water level detection means 70 can be float-type sensors to detect the water level.

[0039] In addition, since the first sewage manhole is the domestic manhole 1 and the second sewage manhole is the public manhole 2, it can be applied to the construction of a sewer pipe (outflow pipe 3) between the domestic manhole 1 and the public manhole 2.

[0040] As described above, the sewerage bypass device 100 according to this embodiment is a compact device that can reduce the operating costs and introduction costs when carrying out sewerage construction work.

[0041] Although the sewer bypass device according to the embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and various other modifications are possible.

[0042] For example, in this embodiment, the first water level detection means and the second water level detection means are float-type sensors, but other configurations such as electrode-type sensors may be used as long as they can detect the water level. Also, different types of sensors may be used for the first water level detection means and the second water level detection means.

[0043] In addition, the first sewage manhole is an in-house manhole and the second sewage manhole is a public manhole, but it is also possible to bypass the sewer pipe between the in-house manholes or the sewer pipe between the public manholes, for example, depending on the sewer pipe being the target of the work. [Explanation of symbols]

[0044] 1. First sewage manhole (house manhole) 2. Second sewage manhole (public manhole) 3 Sewer pipe (outflow pipe) 4 Inflow pipe 5 Inflow pipe 6 Sewer pipe (main pipe) 7 Stop valve 8 ground 9 Power supply 10 Vacuum Tank 20 Vacuum Pump 30 Discharge Pump 40 Suction tube 50 Discharge pipe 60 First water level detection means (float type sensor) 70 Second water level detection means (float type sensor) 80 Control Means 90 Check valve 100 Sewerage bypass device

Claims

1. A sewer bypass device that bypasses a sewer pipe between a first sewage manhole and a second sewage manhole and drains water from the first sewage manhole to the second sewage manhole, The system comprises a vacuum tank, a vacuum pump for sucking wastewater into the vacuum tank, a discharge pump for discharging wastewater from the vacuum tank, a suction pipe connecting the first wastewater manhole and the vacuum tank, a discharge pipe connecting the vacuum tank and the second wastewater manhole, a first water level detection means for detecting the water level of the first wastewater manhole, a second water level detection means for detecting the water level of the vacuum tank, and a control means; The control means operates the vacuum pump to suck wastewater from the first wastewater manhole into the vacuum tank via the suction pipe when the first water level detection means detects a predetermined water level, and operates the discharge pump to discharge wastewater from the vacuum tank into the second wastewater manhole via the discharge pipe when the second water level detection means detects a predetermined water level.

2. 2. The sewer bypass device according to claim 1, wherein at least one of the first water level detection means and the second water level detection means is a float type sensor.

3. 3. The sewer bypass device according to claim 1, wherein the first sewage manhole is a domestic manhole, and the second sewage manhole is a public manhole.

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