JP5829039B2 - Siphon drainage system - Google Patents

Description

  The present invention relates to a drainage system, and more particularly to a siphon drainage system that drains using siphon force.

  In recent years, siphon drainage systems have been proposed in place of conventional gradient drainage systems. As described in Patent Documents 1 and 2, the siphon drainage system is configured to include a watering device and a siphon drainage pipe, and the siphon drainage pipe is a horizontal pulling pipe that is non-sloped along the floor slab. It is comprised with the pipe and the soot pipe which makes a hanging part. And in the siphon drainage system, the drainage efficiency from the watering device is improved by utilizing the siphon force (negative pressure) generated in the soot pipe.

  In this siphon drainage system, the drainage discharged from the watering device flows into the siphon drainage pipe and fills the horizontal pulling pipe forming the horizontal part of the siphon drainage pipe and the dredging pipe forming the hanging part of the siphon drainage pipe. When the dredging pipe of the siphon drainage pipe is filled with drainage, the drainage in the dredging pipe falls due to gravity, and a suction force corresponding to the head difference in the dredging pipe, that is, siphon force is generated. Wastewater is sucked down and flows down.

  In such a siphon drainage system, the siphon start time is an important management item. The siphon start time is a time lag from the start of drainage from a watering device to the generation of siphon force. During the time lag, the water discharged from the watering device is stored in the trap and the pipe. Therefore, if the siphon start time is late, water will overflow or stay on the watering device before the siphon starts. When designing a siphon drainage system, there is a demand to make the siphon start time as early as possible.

  On the other hand, in addition to the siphon drainage system, a pump may be used in a drainage facility to cause the drainage in the drainage pipe to flow downstream. For example, in the technique disclosed in Patent Document 3, when the stored water in the drainage storage tank is sucked by the drainage pump and the tip of the drainage flowing through the drainage pipe reaches the position where the siphon force is generated, the pump is stopped. Drains using siphon force.

  However, in the technique of the cited document 3, since it is essential that the liquid passes through the pump, the pump is contaminated by drainage, the pump is clogged, solid matter flows in and damages, or the liquid pump There is a possibility that the pump load will increase due to the inflow, and the life of the pump will be shortened.

JP 2000-297447 A JP 2003-201727 A Japanese Patent Laid-Open No. 11-61922

  By the way, in the siphon drainage system, in order to advance the siphon start time, it is conceivable to obtain a suction force necessary for generating the siphon force using a fluid transport device such as a pump. However, when the pump is simply used, there is a problem that the pump becomes dirty and the pump is liable to be broken or damaged as described above.

  The present invention has been made in consideration of the above-described facts, and an object of the present invention is to provide a siphon drainage system capable of advancing siphon start time by appropriately using a fluid transport device.

A siphon drainage system according to claim 1 of the present invention is a siphon generated by flowing down drainage that is disposed downstream of the horizontal pulling pipe, and a horizontal pulling pipe that is piped without gradient along the floor slab. A suction pipe that sucks and drains the waste water in the horizontal pipe by force, and is connected to an upstream pipe upstream of the vertical pipe by a connecting portion, and compressed gas from outside the upstream pipe to the upstream pipe A compressed gas supply device for sending

  In the siphon drainage system having the above configuration, the compressed gas from the compressed gas supply tool is sent to the upstream pipe. Here, the upstream side pipe is a pipe disposed between the watering device and the dredger pipe, and includes a horizontal draw pipe and a storage tank for storing drainage. The compressed air sent to the upstream pipe applies pressure to the drainage flowing through the upstream pipe. This pressure moves the wastewater downstream in the horizontal pulling pipe and the vertical pipe, and pushes the wastewater downward in the vertical pipe. This activates the siphon force.

  According to the present invention, since the siphon force is positively generated by the compressed air from the compressed gas supply tool, the siphon start time can be advanced as compared with the case where the compressed gas supply tool is not used. Moreover, since the compressed gas supply device sends the compressed gas from the outside of the upstream side pipe to the upstream side pipe through the connecting portion, it does not require the inflow of drainage into the instrument, and the compressed gas supply unit is contaminated by the drainage. The failure and damage of the compressed gas supply tool can be suppressed.

  The siphon drainage system according to claim 2 of the present invention is characterized in that the compressed gas supply tool is connected to the upstream pipe via a connecting pipe extending upward from the connecting portion.

  In this way, by connecting the compressed gas supply tool via the connecting pipe, it is possible to more reliably prevent the inflow of drainage into the compressed gas supply tool and supply the compressed gas from above the connecting portion. .

  In the siphon drainage system according to claim 3 of the present invention, a check mechanism for preventing the backflow of fluid from the downstream side to the upstream side is provided upstream of the connecting portion of the upstream pipe. It is characterized by.

  Thus, by providing the check mechanism, the compressed air sent from the compressed gas supply tool to the upstream pipe is prevented from flowing back upstream from the check mechanism, and the siphon force is efficiently generated. Can do. In addition, when a watering device (drainage trap) is provided, it is possible to prevent discharge of drainage from the watering device.

  In the siphon drainage system according to claim 4 of the present invention, the compressed gas supply tool starts supplying compressed gas to the upstream pipe in response to a start timing of inflow of drainage to the upstream pipe. The supply of compressed gas to the upstream pipe is stopped in response to the siphon start timing.

  In this way, the compressed air is supplied at an appropriate timing for generating the siphon force by starting the supply of the compressed gas in accordance with the inflow of the drainage into the upstream pipe and the timing of the siphon start. And siphon force can be generated more efficiently. Also, by stopping the supply of compressed gas in accordance with the timing of siphon start, the compressed gas supply tool can be stopped before all the drainage is discharged, and the operation time of the compressed gas supply tool Can be shortened.

  The siphon drainage system according to claim 5 of the present invention is characterized in that a storage tank for temporarily storing drainage is provided on the upstream side of the horizontal pipe.

  Thus, by providing a storage tank, the drainage required for generation of siphon force can be stored and siphon force can be generated efficiently.

  In addition, the compressed gas supply tool may be connected with the storage tank, and may be connected with other upstream piping.

  The siphon drainage system according to claim 6 of the present invention is characterized in that a disposer is installed on the upstream side of the horizontal pipe, and the compressed gas supply device is operated in conjunction with the disposer.

  Thus, the compressed gas supply tool can be operated in conjunction with the operation of the disposer to generate a siphon force.

  In the siphon drainage system according to claim 7 of the present invention, a dishwasher is installed upstream of the horizontal pipe, and the compressed gas supply tool is operated in conjunction with the dishwasher. Features.

  In this way, the compressed gas supply tool can be operated in conjunction with the operation of the dishwasher to generate siphon force.

  Since this invention set it as the said structure, siphon start time can be advanced by using a compressed gas supply tool appropriately.

It is the schematic which shows the whole structure of the siphon drainage system which concerns on 1st Embodiment. It is the schematic which shows the partially expanded structure of the siphon drainage system which concerns on 1st Embodiment. It is a control system block diagram of the siphon drainage system concerning a 1st embodiment. In the siphon drainage system which concerns on 1st Embodiment, it is explanatory drawing which shows the state (A)-(C) of drainage. It is a flowchart which shows the procedure of the compressed air supply process of 1st Embodiment. It is the schematic which shows the whole structure of the siphon drainage system which concerns on the modification of 1st Embodiment. It is the schematic which shows the whole structure of the siphon drainage system which concerns on the other modification of 1st Embodiment. It is the schematic which shows the partially expanded structure of the siphon drainage system which concerns on the other modification of 1st Embodiment. It is the schematic which shows the whole structure of the siphon drainage system which concerns on 2nd Embodiment. It is a control system block diagram of the siphon drainage system concerning a 2nd embodiment. In the siphon drainage system which concerns on 2nd Embodiment, it is explanatory drawing which shows the state (A)-(C) of drainage. It is a flowchart which shows the procedure of the compressed air supply process of 2nd Embodiment. It is the schematic which shows the partially expanded structure of the siphon drainage system which concerns on the modification of 2nd Embodiment.

[First Embodiment]
Below, 1st Embodiment of the siphon drainage system which concerns on this invention is described based on drawing. FIG. 1 shows a schematic diagram of the overall configuration of the siphon drainage system according to the present embodiment. A siphon drainage system 10 according to the present embodiment is a drainage system that efficiently drains drainage from a watering device using siphon force.

  In the present embodiment, the siphon drainage system 10 is used in an apartment house composed of a plurality of floors, and as shown in FIG. The drainage stack 12 extends in the vertical direction (longitudinal direction) of the apartment house, and penetrates the floor slab 14 on each floor of the apartment house.

  On each floor of the apartment house, there are provided watering devices 16 such as a bathtub, a washing machine, a washroom, a toilet, and a kitchen sink, and the drainage discharged from the watering device 16 flows through this watering device 16. A siphon drain pipe 23 is connected.

  The siphon drain pipe 23 includes an instrument drain pipe 18 connected to the water draining instrument 16, a horizontal pulling pipe 20 that communicates with the instrument drain pipe 18, and a dredge pipe 22 that communicates with the horizontal pull pipe 20. Has been.

  The instrument drain pipe 18 is configured to allow the drainage discharged from the watering instrument 16 to flow downward. In FIG. 1, only one watering device 16 and one siphon drain pipe 23 are shown.

  A horizontal pulling pipe 20 that communicates with the appliance drain pipe 18 extends in the horizontal direction on the floor slab 14. The horizontal pulling pipe 20 is disposed without any gradient, and flows the waste water flowing from the instrument drain pipe 18 into the horizontal pulling pipe 20 in the horizontal direction. In this embodiment, the horizontal pipe 20 and the instrument drain pipe 18 constitute the upstream pipe of the present invention.

  The soot pipe 22 that communicates with the horizontal pulling pipe 20 extends in the vertical direction (longitudinal direction) along the drainage stack 12. The soot tube 22 generates siphon force by dropping the drainage flowing into the soot tube 22 from the horizontal pulling tube 20 downward.

  A drainage joint 50 is provided to connect the dredger tube 22 and the drainage stack 12. The drainage joint 50 joins the drainage from the vertical pipe 22 to the drainage stack 12.

  The appliance drain pipe 18, the horizontal draw pipe 20, and the dredge pipe 22 are configured to guide the drainage to the drainage stack 12 as it is without joining with drainage from other water-circulating instruments 16. In addition, the inner diameter of the drainage pipe 18, the horizontal pulling pipe 20, and the dredging pipe 22 is set so that the drainage from the watering device 16 flows in a full state. Is set.

  As shown in FIG. 2, a connecting pipe 30 is connected to the horizontal pulling pipe 20. The connecting pipe 30 communicates with the horizontal pulling pipe 20 at the connecting portion 30A and extends upward. A compressed gas supply tool 32 is attached to the tip of the connecting pipe 30. The compressed gas supply tool 32 can supply compressed air to the horizontal pulling tube 20. A compressed check valve (not shown) is provided at the compressed air discharge port of the compressed gas supply tool 32. As the compressed gas supply tool 32, an air pump, a compressor, or the like can be used.

  The position of the connecting portion 30A where the compressed gas supply tool 32 is connected to the horizontal pipe 20 is preferably a position where the compressed air supplied from the compressed gas supply tool 32 does not directly flow into the soot tube 22, It is preferable that it is disposed upstream of ½ of the entire length of the pulling tube 20.

  A check valve 34 as a check mechanism is installed upstream of the connecting portion 30 </ b> A of the horizontal pulling tube 20. The check valve 34 is configured to allow the fluid to move from the upstream side to the downstream side of the check valve 34 and to prevent the fluid from moving from the downstream side to the upstream side of the check valve 34. As the check valve 34, a self-sealing trap can be used. In the present embodiment, an example in which a self-sealing trap (membrane valve) is used will be described. However, the check valve 34 can be of other types. When a self-sealing trap is not used, it is necessary to provide a separate trap in the instrument drain pipe 18.

  A sensor 36 is installed in the vicinity of the connecting portion 30 </ b> A of the horizontal pulling tube 20. The sensor 36 can detect the passage of drainage from the watering device 16. The sensor 36 is connected to a controller 40 described later, and outputs a drainage detection signal S <b> 1 to the controller 40 when detecting passage of drainage from the watering device 16.

  The controller 40 includes a CPU, ROM, and RAM (not shown), and is connected to the compressed gas supply tool 32, the sensor 36, and the memory 42 as shown in FIG. In the memory 42, the time (operation start waiting time T1) for starting the operation of the compressed gas supply tool 32 for starting the siphon force from the input of the waste water detection signal S1 (the timing when the waste water passes the sensor 36) and the operation After the start waiting time T1 has elapsed, the time (operation time T2) for which the compressed gas supply tool 32 is allowed to be recorded is recorded in advance.

  The operation start waiting time T1 can be set as a time from when the drainage passes through the sensor 36 until the horizontal pulling tube 20 is in a predetermined filling state. The predetermined filling state refers to a state where drainage is filled in the horizontal pulling tube 20 to such an extent that the siphon force can be activated effectively by supplying compressed air, and 60% of the entire horizontal pulling tube 20 About 90% is in a state filled with drainage. In this filling state, an average predetermined time from when the drainage passes through the connecting portion 30A to the filling state can be obtained in advance by experiments or the like.

  The operation time T2 is a time for which the compressed gas supply tool 32 is kept after the operation start waiting time T1 has elapsed, and the time required until the siphon force is activated by the supply of compressed air is set.

(Operation of this embodiment)
Next, the operation of the above embodiment will be described.

  Drainage discharged from the watering device 16 flows through the device drainage pipe 18, the horizontal pulling pipe 20, and the dredge pipe 22 (see FIG. 4A). When the wastewater passes through the sensor 36, the passage of the wastewater is detected by the sensor 36, and the wastewater detection signal S1 is output to the controller 40. When the drainage detection signal S1 is input, the controller 40 executes the compressed air supply process shown in FIG.

  First, in step S10, the operation start standby time T1 is waited. When the operation start standby time T1 has elapsed, the operation start signal S2 is output to the compressed gas supply tool 32 in step S12. By this operation start signal S2, the compressed gas supply tool 32 is operated, and the compressed air is supplied to the horizontal pulling tube 20. In step S14, the process waits until the operation time T2 elapses.

  At this time, as shown in FIG. 4B, the horizontal pulling tube 20 is in a state in which about 60% to 90% of the whole is filled with drainage. By supplying the compressed air to the horizontal pulling pipe 20, pressure is applied to the drainage, and the drainage is pushed downward in the vertical pipe 22 (see FIG. 4C). As a result, a suction force acts on the downstream drainage and siphon force is generated.

  When the operation time T2 has elapsed, an operation stop signal S3 is output to the compressed gas supply tool 32 in step S16. The operation of the compressed gas supply tool 32 is stopped by the operation stop signal S3, and the supply of compressed air to the horizontal pulling tube 20 is stopped. Even after the supply of compressed air is stopped, the siphon force is applied and the drainage is discharged by the siphon force.

According to the present embodiment, since the siphon force is positively generated by the compressed air from the compressed gas supply tool 32, the siphon start time can be advanced as compared with the case where the compressed gas supply tool 32 is not used. . Moreover, since the compressed gas supply tool 32 sends compressed gas from the outer side of the piping through which drainage passes through the connecting portion 30A with the horizontal pulling tube 20, it does not require the inflow of drainage into the instrument, and the compressed gas is supplied. The supply tool 32 is not contaminated by drainage, and failure and damage of the compressed gas supply tool 32 can be suppressed.
Moreover, since the operation time of the compressed gas supply tool 32 is short compared with the time for which the pump is operated in the case of simple pressure drainage, the service life of the compressed gas supply tool 32 can be extended.

  In the present embodiment, the check valve 34 is provided, but the check valve 34 may not be provided. By using the check valve 34 as in the present embodiment, siphon force can be generated efficiently.

  Moreover, in this embodiment, although the compressed gas supply tool 32 was connected with the horizontal pulling tube 20, you may connect the compressed gas supply tool 32 with the instrument drain pipe 18 as FIG. 6 shows.

  Moreover, in this embodiment, although the compressed gas supply tool 32 was connected with the horizontal drawing pipe 20 via the connection pipe 30, the connection pipe 30 is not necessarily required and the compressed gas supply tool 32 is directly connected to the horizontal drawing pipe. 20 may be connected. In this case, the inflow of the wastewater into the compressed gas supply tool 32 can be suppressed by connecting the compressed gas supply tool 32 above the connecting portion 30A. In addition, by providing a check valve at the compressed air outlet of the compressed gas supply tool 32, the inflow of waste water can be reliably prevented.

  Moreover, in this embodiment, although the action | operation of the compressed gas supply tool 32 was set with the timing of the signal from the sensor 36, you may set using another apparatus. Moreover, you may set about the stop of the compressed gas supply tool 32 based on the supply method of the other method, for example, the pressure in the horizontal drawing pipe 20, etc.

Furthermore, the compressed gas supply tool 32 can be actuated and stopped by turning the switch on and off by the user. For example, as shown in FIG. 7, in the case of the watering device 16 in which the disposer 37 is installed to pulverize the input material introduced into the outlet of the watering device and allow the pulverized material to flow down together with the drainage. The compressed gas supply tool 32 can be actuated and stopped in conjunction with the on / off of 37.
In addition to or in place of the disposer 37, a dishwasher is arranged on the upstream side of the watering device 16, and the compressed gas supply device 32 is activated and stopped in conjunction with the on / off of the dishwasher. May be performed.

  Further, as shown in FIG. 8, a bag-like bag member 38 formed of a film body may be attached to the instrument drain pipe 18 of the present embodiment. The bag member 38 communicates with the instrument drain pipe 18 via a tubular connecting pipe 38A and is attached to the upstream side of the check valve 34. The bag member 38 is a sealed space that can be expanded and contracted. When the drainage from the watering device 16 starts, the air remaining in the device drainage pipe 18 flows into the bag member 38 and expands. After the siphon force is activated, the air inside the bag member 38 flows out. By attaching the bag member 38, it becomes possible to efficiently release the air that becomes resistance to drainage.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. In the second embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 9, the siphon drainage system 60 of the present embodiment includes a storage tank 52. The storage tank 52 can store the waste water from the plurality of watering devices 16. The storage tank 52 is disposed between the horizontal pulling pipe 20 and the instrument drain pipe 18, and the instrument drain pipe 18 is connected to the upstream side. The instrument drain pipe 18 is preferably disposed with a gradient so that the storage tank 52 side is lowered. A horizontal pulling pipe 20 is connected to the downstream side of the storage tank 52.

  The compressed gas supply tool 32 is connected to the horizontal pulling pipe 20 on the downstream side of the storage tank 52 via the connecting pipe 30. In this embodiment, the check valve 34 is not installed, but the check valve 34 may be installed in the appliance water distribution pipe 18.

In the present embodiment, a level sensor 44 is provided in the storage tank 52 instead of the sensor 36. The level sensor 44 can detect the water level of the waste water in the storage tank 52. As shown in FIG. 10, the level sensor 44 is connected to the controller 40, and outputs a level arrival signal S <b> 4 to the controller 40 when the drainage water level in the storage tank 42 reaches a predetermined working water level L <b> 1. The working water level L <b> 1 is set to such a level that siphon force can be generated when drainage is stored to some extent in the storage tank 42 and compressed air is supplied to the horizontal pulling pipe 20. The water level can be obtained in advance by experiments or the like.
Instead of the level sensor 44, a pressure sensor capable of detecting the pressure in the storage tank 52 is provided, and the level arrival signal S4 is output to the controller 40 when a preset predetermined pressure is exceeded. May be.

  In the memory 42, after the level arrival signal S4 is input, a time (operation time T3) for which the compressed gas supply tool 32 is allowed to be recorded is recorded in advance.

(Operation of this embodiment)
Next, the operation of the above embodiment will be described.

  The drainage discharged from the watering device 16 flows into the temporary storage tank 42 through the device drainage pipe 18. (See FIG. 11A). When the waste water is stored in the temporary storage tank 42 and the water level in the temporary storage tank 42 becomes the working water level L1, the level sensor 44 outputs a level arrival signal S4 to the controller 40. When the level attainment signal S4 is input, the controller 40 executes the compressed air supply process shown in FIG.

  First, in step S20, the operation start signal S2 is output to the compressed gas supply tool 32. The compressed gas supply tool 32 is activated by the operation start signal S2, and compressed air is supplied to the horizontal pulling tube 20 (see FIG. 11B). In step S22, the process waits until the operation time T3 elapses. By supplying the compressed air to the horizontal pulling pipe 20, pressure is applied to the drainage, and the drainage is pushed downward in the vertical pipe 22 (see FIG. 11C). As a result, a suction force acts on the downstream drainage and siphon force is generated.

  When the operation time T3 has elapsed, an operation stop signal S3 is output to the compressed gas supply tool 32 in step S24. The operation of the compressed gas supply tool 32 is stopped by the operation stop signal S3, and the supply of compressed air to the horizontal pulling tube 20 is stopped. Even after the supply of compressed air is stopped, the siphon force is applied and the drainage is discharged by the siphon force.

According to the present embodiment, since the siphon force is positively generated by the compressed air from the compressed gas supply tool 32, the siphon start time can be advanced as compared with the case where the compressed gas supply tool 32 is not used. . Moreover, since the compressed gas supply tool 32 sends compressed gas from the upper side of the connection part 30A with the horizontal pulling tube 20, it does not require inflow of drainage into the instrument, and the compressed gas supply tool 32 is contaminated by drainage. The failure and damage of the compressed gas supply tool 32 can be suppressed.
Moreover, since the siphon start time can be advanced, the capacity of the temporary storage tank 42 can be reduced.
Further, when the length of the horizontal pulling tube 20 is increased, the siphon activation reference head required for starting the siphon is also increased. Conventionally, in order to increase the length of the horizontal pulling tube 20, the height of the temporary storage tank 42 is increased. It was necessary to make it higher. In the present embodiment, by using the compressed gas supply tool 32, the siphon force can be activated even when the siphon activation reference head that has been conventionally required is not reached. Therefore, the length of the horizontal pulling tube 20 can be increased as compared with the conventional case.

  In the present embodiment, the compressed gas supply tool 32 is connected to the horizontal pulling tube 20. However, as shown in FIG. 13A, the compressed gas supply tool 32 is installed in the storage tank 52, and the compressed air is placed inside the storage tank 52. May be supplied. In addition, as shown in FIG. 13B, the compressed gas supply tool 32 may be connected to the instrument drain pipe 18.

DESCRIPTION OF SYMBOLS 10 Siphon drainage system 18 Instrument drainage pipe 20 Horizontal draw pipe 22 Side pipe 23 Siphon drainage pipe 30 Connection pipe 30A Connection part 32 Compressed gas supply 34 Check valve 36 Sensor 37 Disposer 38 Bag member 42 Memory 40 Controller 50 Siphon drainage system 52 Storage tank 44 Level sensor

Claims (7)

A horizontal pipe that is piped along the floor slab with no gradient,
A soot pipe that is arranged downstream of the horizontal pipe and sucks and drains the waste water in the horizontal pipe by siphon force generated by flowing down the waste water ;
A compressed gas supply tool that is connected to an upstream pipe upstream of the soot pipe at a connecting portion, and sends compressed gas from outside the upstream pipe to the upstream pipe;
Siphon drainage system with   The siphon drainage system according to claim 1, wherein the compressed gas supply tool is connected to the upstream pipe via a connecting pipe extending upward from the connecting portion.   3. The check mechanism according to claim 1, wherein a check mechanism for preventing a backflow of fluid from the downstream side to the upstream side is provided upstream of the connecting portion of the upstream pipe. The siphon drainage system described.   The compressed gas supply device starts supplying compressed gas to the upstream pipe corresponding to the start timing of the inflow of drainage to the upstream pipe, and corresponds to the upstream pipe corresponding to a predetermined siphon force start timing. The siphon drainage system according to any one of claims 1 to 3, wherein the supply of the compressed gas to is stopped.   The storage tank which temporarily stores waste_water | drain is provided in the upstream of the said horizontal draw pipe, The said compressed gas supply tool is connected with the said upstream piping or the said storage tank, The 1st characterized by the above-mentioned. The siphon drainage system according to any one of 4.   The disposer is installed on the upstream side of the horizontal pipe, and the compressed gas supply tool is operated in conjunction with the disposer. Siphon drainage system.   The dishwasher is installed in the upstream of the said horizontal draw pipe, The said compressed gas supply tool is operated in conjunction with the said dishwasher, The any one of Claims 1-3 characterized by the above-mentioned. The siphon drainage system according to item 1.

Images