JPH1161922A - Wastewater control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten operation time by stopping a pump when wastewater in a wastewater channel reaches a position where wastewater before the pump is sucked by siphoning action. SOLUTION: When wastewater of equipment 2 using water is stored in a wastewater storing tank 3 and a water level in the water tank reaches a detection position 6, a water level detector 31 sends a detection signal to a pump control means 8 and operates a timer 9. The control means 8 starts a sump pump 4, and discharges wastewater in the tank 3 to a house inlet 12 and stops the pump 4 when a set time of the timer 9 has been passed. When the set time of the timer 9 has been passed, the head of wastewater discharged to a distribution pipe 5 from the pump has reached a position 10 where wastewater can be sucked by siphoning action by the dead weight of wastewater, even if the pump 4 is stopped, wastewater in the tank 3 is delivered to the distribution pipe 5 through the inside of the pump 4 and discharged to the house inlet 12, thereby helping shorten pump driving time and vibration and noise occurrence time and reduce pump failure and others.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage control method, and more particularly, to a drainage control method for reducing the load on a drainage pump, vibration and noise caused by the drainage pump by shortening the operation time of the drainage pump. .

[0002]

2. Description of the Related Art Conventionally, there has been known a drainage method of forcibly discharging water from a house or a building by using a drainage pump as shown in FIG. (See JP-A-2-304128).
In particular, in recent years, in order to reduce the thickness of the inside of a wall or under the floor in a house or a building, the diameter of a drain pipe embedded inside the wall or under the floor of a house or a building is preferably as small as possible. Widely used.

The drainage method is described in detail. The drainage from a water-using device (101) such as a sink or a sink is provided by a sensor (105) provided in a vertical pipe portion (103A) of a drainage pipe (103). When it is detected that the water has flowed into the vertical pipe portion (103A), a pump operation signal is sent from the sensor (105) to the drain pump (104) via the pump control means (107), and the drain pump (104) drains the water. Is forcibly discharged toward the discharge port. After that, drain pipe (10
The sensor (10) provided in the horizontal tube part (103B) of 3)
If the drainage is detected by 6), a pump stop signal is sent from the sensor (106) to the drainage pump (104) via the pump control means (107), and the operation of the drainage pump (104) is stopped. It is supposed to.

However, in this method, since the drain pump (104) operates until all the waste water is discharged, the operating time of the drain pump (104) becomes long. For this reason, the vibration and noise of the drain pump (104) give discomfort to people in the house or building, and furthermore, the drain pump (10)
The burden of 4) increases, and the possibility that the drain pump (104) breaks down increases. In such a drainage control method, since a drainage pipe or the like may be buried inside the wall or under the floor, when the sensors (105) and (106), the drainage pump (104), etc. break down, it takes a great deal of labor to repair them. And it takes time. Therefore, the sensor (105)
How to reduce the probability of failure of (106), drain pump (104), etc. is a very important concept in the art.

In recent years, wastewater discharged from a water-using device such as a sink is temporarily stored in a wastewater storage tank, and when a predetermined amount of wastewater is accumulated in the wastewater storage tank, the wastewater is actively used by a drainage pump or the like. Although a method of discharging waste gas is known, this method has the same problem as described above.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to shorten the operation time of a drain pump to reduce the time during which vibration and noise are generated by the drain pump. It is an object of the present invention to provide a drainage control method that is short and reduces the burden and failure of a drainage pump.

[0007]

[Means for Solving the Problems]

(Claim 1) In order to solve the above-mentioned problem, the drainage control method according to the present invention is characterized in that, when it is detected that the drainage flowing into the drainage reaches a detection position in the drainage, the detection position of the drainage is detected. In a drainage control method in which a drainage pump provided at a more rear side is operated to discharge drainage in a drainage channel toward a discharge port provided at one end of the drainage channel, the drainage pump may be used in a discharge port direction. Wastewater discharged to
In the middle of the drainage channel, due to the siphon phenomenon due to its own weight, when it reaches a position where the drainage in front of the drainage pump can be sucked,
The drain pump is stopped.

(Regarding the term “drainage channel”) The term “drainage channel” used in this specification refers to an area through which drainage controlled by the drainage control method according to the present invention, such as a drain pipe or a drainage storage tank. Point. In addition, when a drainage storage tank is provided, its installation location is not particularly limited, and for example, above the floor, below the floor, inside the wall, and the like. A discharge port is provided at the end of this area through which drainage passes. In addition, a sewage basin, another drainage pipe, another drainage storage tank, etc. may be provided at the end of the discharge port.

(Wastewater) The wastewater is not particularly limited, and includes, for example, industrial wastewater and domestic wastewater. In addition, it is preferable that the viscosity of the drainage is as low as possible from the viewpoint of reducing the burden and failure of the drainage pump, which will be described in detail later, and allowing the drainage to flow smoothly even after the drainage pump is stopped. Similarly, it is preferable that solid foreign matter has been removed from the wastewater passing through the drainage channel in advance or has been finely divided.

(Detection position) The detection position in the drainage channel is located in the drainage channel, and the location is not particularly limited as long as it is ahead of a drainage pump described later. As shown in FIGS. When the drained water drained from the tank is once stored in the drainage storage tank, it is preferably provided in the drainage storage tank. As shown in FIG. 3, the drainage pipe is directly connected to a water-using device (eg, a sink, a sink, etc.). When the waste water is drained, it is preferably provided in a drain pipe.

Means for detecting that the wastewater flowing into the drainage channel has reached the detection position in the drainage channel is not particularly limited. For example, a flow rate sensor, a float switch, a capacitance sensor, a pressure sensor, Water level detectors and the like. When the wastewater is once stored in the wastewater storage tank as shown in FIGS. 1 and 2, it is preferable that a water level detector is provided as a detection means at the detection position.

(Regarding the drainage pump) The drainage pump used in the drainage control method of the present invention is not particularly limited as long as it is a pump capable of sucking a liquid and allowing the liquid to pass therethrough when stopped. Examples of such a pump include, for example, a centrifugal pump, a turbine pump, a mixed flow pump, an axial pump, a reciprocating pump, a rotary pump, and the like. Rotary pumps are preferred.

(Regarding the siphon phenomenon) Regarding the structure of the drainage channel, even when the drainage pump is stopped, the drainage discharged by the drainage pump into the drainage channel behind the pump (hereinafter referred to as “rear drainage channel”) is not removed. By its own weight,
The drainage channel in front of the pump (hereinafter referred to as “front drainage channel”) needs to have a structure that can suck the drainage by the siphon phenomenon. That is, until the position of the tip of the drainage in the rear drainage channel is lower than the position of the rear end of the drainage in the front drainage channel,
The drainage pump must force the drainage to drain, and the drainage channel between the leading and trailing ends of the drainage must be closed. Such a closed drainage channel usually has a substantially "tomato" shape in order to cause a siphon phenomenon, but does not necessarily have to have a "tomato" shape, at least as described above. It suffices that the position of the front end of the drainage is lower than the position of the rear end, and the drainage passage through which the drainage flows is closed. In addition, it is preferable to provide a backflow prevention valve or a solenoid valve in the rear drainage channel from the viewpoint of preventing drainage from flowing back.

(Regarding the drainage pipe) In the present invention, the material of the drainage pipe used as a closed drainage channel in which the siphon phenomenon occurs is not particularly limited, and synthetic resins such as vinyl chloride are preferable in consideration of corrosion resistance and workability. The diameter of the drain pipe is not particularly limited, and is preferably small from the viewpoint of reducing the thickness inside the wall or under the floor where the drain pipe is embedded. The thickness of the drainage pipe is not particularly limited, and can be appropriately selected by those skilled in the art in consideration of reducing the pipe diameter of the drainage pipe while having a sufficient thickness for water leakage. The place where such a drain pipe is installed is not particularly limited, and includes, for example, a place under the floor, inside a wall, and a pipe shaft space.

(Drainage Pump Stop) In the drainage control method according to the present invention, the drainage in the rear drainage channel discharged toward the discharge port by the drainage pump sucks the drainage in the front drainage channel by a siphon phenomenon. When the position is reached, stop the drain pump. As means for stopping the drainage pump, a position where the drainage in the rear drainage channel discharged by the drainage pump can suck the drainage in the front drainage channel by a siphon phenomenon is preset, and a sensor is provided at this position, and a sensor is provided. Means to stop the drainage pump when a drainage detection signal is issued, and the drainage in the rear drainage drained by the drainage pump after the drainage pump operates sucks the drainage in the front drainage drainage due to the siphon phenomenon. Means for setting a time to reach the position where it can be made in advance in a timer and stopping the drain pump when a signal indicating that the set time has elapsed since the drain pump was operated by this timer is given. Note that a signal such as a drainage detection signal may be sent from a sensor or a timer to the pump control means once, and then sent from the pump control means to the pump. Such a pump control means may be provided integrally with the drainage pump, or may be provided at a different place from the drainage pump.

(When a timer is used) When the timer is used as a means for stopping the drain pump as described above, the timer is previously sent to the rear drainage channel by the drain pump from the start of operation of the drain pump. Set the time until the drainage reaches the position where the drainage in the front drainage can be sucked by the siphon phenomenon. When the drainage of the front drainage channel is detected at the detection position of the drainage channel, the drainage pump and timer are started to operate, and after a set time has elapsed, the drainage in the rear drainage channel is reduced by the siphon phenomenon to the front drainage channel. After reaching the position where the drainage inside can be sucked, the drainage pump is stopped by the signal from the timer.

Such a time is appropriately selected by those skilled in the art according to the place (for example, in a house or a building) where the drainage control method according to the present invention is performed, the length of the drainage channel, and the like. .

When the sensor is used as described above as a means for stopping the drain pump, when the sensor detects that the tip of the drain has passed, the sensor generates a drain detection signal. , To the drain pump as a pump stop signal to stop the drain pump. Such a sensor is not particularly limited, and examples thereof include a flow rate sensor and a capacitance sensor.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail with reference to the drawings.

FIG. 1 is a diagram showing one embodiment of a drainage control method according to the present invention. In this embodiment,
A drainage channel (A) provided under the floor (1) is connected to a drainage storage tank (3), a drainage pump (4) provided in the drainage storage tank (3), and a drainage pump (4). And a drain pipe (5) which is a closed conduit.

The drainage storage tank (3) is configured such that wastewater from the water-using equipment (2) flows in through the inflow pipe (21) and has a water level detector (31) in the tank. I have. When the water level detector (31) detects that the drainage in the drainage storage tank (3) has been stored up to the detection position (6), which is the operation start water level of the drainage pump (4), the pump operation signal is sent to a signal line ( 7) to the pump control means (8).

The drain pump (4) has a water inlet (41).
Is provided in the drainage storage tank (3), and its operation and stop are controlled by the pump control means (8). The pump control means (8) is connected to a timer (9) that can set the time from the start of operation of the pump to the stop of the pump.
In the timer (9), the drain pump (4) starts operating, and the tip of the drain discharged from the drain pump (4) sucks the drain in the drain storage tank (3) by the siphon phenomenon due to the weight of the drain. The time to reach the possible position (10) is set in advance.

The drain pipe (5) extends horizontally along the floor from the drain pump (4) and is connected to a horizontal pipe part (51) having a check valve (11) and to one end a sewage basin (12). And a vertical pipe section (52) having a discharge port (52a).

In this drainage control method, wastewater from the water-using equipment (2) passes through the inflow pipe (21) and is stored in the drainage storage tank (3). Next, when the water level detector (31) detects that the water level of the wastewater in the wastewater storage tank (3) has reached the detection position (6), the water level detector (31) transmits the signal level via the signal line (7). A pump operation signal is sent to the pump control means (8), whereby the drainage pump (4) and the timer (9) are operated, and the drainage pump (9) causes drainage from the drainage storage tank (3) to the sewage tank (12). ).

Next, when the set time of the timer (9) elapses, a pump stop signal is sent from the timer (9) to the pump control means (8), and the drain pump (4) stops.
More specifically, when the set time of the timer (9) elapses, the tip of the drainage discharged from the drainage pump (4) to the drainage pipe (5) discharges the drainage in the drainage storage tank (3) by its own weight. Since it reaches the position (10) where suction can be performed by the siphon phenomenon, even if the drainage pump (4) stops, the drainage in the drainage storage tank (3) passes through the drainage pump (4) and drains one after another. 5) and continue to be discharged toward the sewage basin (12).

Immediately before the end of the drainage, appropriate drainage is performed from the inflow pipe (21) to the drainage channel (A).
The pressure in the drainage channel (A) is stabilized, and drainage of the drainage is completed.

As described above, in this drainage control method, the drainage discharged by the drainage pump (4) reaches the position (10) where the drainage in the drainage storage tank (3) can be sucked by the siphon phenomenon by its own weight. Only drainage pump (4)
Is operated, the operation time of the drainage pump (4) is reduced as compared with the conventional drainage control method. Accordingly, useless operation of the drainage pump (4) can be prevented, and vibration and noise of the pump can be reduced.

In the drainage control method in which the pump is stopped using the sensor, if the sensor fails, the drainage pump (4) runs idle (the pump operates even though there is no drainage), and the drainage pump ( Although an extremely large load may occur in 4), in the present embodiment, such an idle operation can be prevented, and the load on the drain pump (4) due to the idle operation can be extremely reduced.
As described above, since the useless operation of the drain pump (4) is reduced as much as possible, the probability that the drain pump (4) will fail and the energy required to operate the drain pump (4) are reduced. And the reliability of the drainage system is improved.

The drain pipe (5) has a check valve (1).
Since 1) is interposed, the drain water flowing through the drain pipe 5 behind the drain pump 4 is prevented from flowing backward.

Further, as a sensor, a water level detector (3
Since only 1) is provided, the failure probability of the sensor can be reduced, the number of wirings can be reduced, and the drainage system can be made compact as compared with a drainage control method in which a plurality of sensors are combined. Therefore, the probability that the above-described drainage control method cannot be performed can be reduced.

(Another Embodiment 1) FIG. 2 is a diagram showing another embodiment of the drainage control method according to the present invention. In this embodiment, instead of the timer (9), the position (1) inside the vertical pipe portion (52) lower than the bottom of the drainage storage tank (3) is used.
0) except that a sensor (13) is provided.
It is identical to the previously described embodiment of the invention. That is, the sensor (1) provided at such a position (10)
3) When detecting drainage discharged to the sewage basin (12), sends a pump stop signal to the pump control device (8) via the signal line (14) to stop the drainage pump (4). It has become.

Since the present invention in this embodiment is a piping system as described above, in this embodiment,
Except for the description in which only one sensor (water level detector) is provided, the same effects as those described in the embodiment of the invention described above can be obtained.

Further, in the embodiment of the invention before using the timer (9), the drainage pump (4) is deteriorated by long-term use, and the drainage pump (4) is sufficiently in the drainage storage tank (3). Even if the wastewater cannot be discharged to the sewage basin (12) and the set time of the timer (9) has elapsed, the wastewater discharged by the drainage pump (4) is discharged by its own weight into the wastewater storage tank (3). Although it may not reach the position where it can be sucked due to the siphon phenomenon, in this embodiment, since the drainage discharged by the drainage pump (4) is detected using the sensor (13), the drainage pump (4)
Even if is deteriorated due to long-term use, the siphon phenomenon is surely caused, and the wastewater in the wastewater storage tank (3) can be discharged.

(Another Embodiment 2) FIG. 3 is a view showing still another embodiment of the drainage control method according to the present invention. This embodiment is substantially the same as the previously described embodiment of the invention except that the drainage storage tank (3) is not provided, and the drainage channel (B) includes a drainage pipe (5),
A drain pump (4) interposed in the drain pipe (5).

In this embodiment, the waste water flowing into the drain pipe (5) from the water use equipment (2) is detected by the sensor (1) provided at the detection position (6) in the drain pipe (5).
When 5) is detected, a pump operation signal is sent from the sensor (15) through a signal line (7) to a pump control device (not shown) provided inside the drainage pump (4), whereby the detection position ( 6) The drainage pump (4) interposed in the drainage pipe (5) at the rear is operated, and the drainage is forcibly discharged to the wastewater basin (12). A timer (not shown), which is incorporated in the pump control device and sets a time required for the drainage to reach a position (10) lower than the detection position from the detection position (6) provided with the sensor (15). ) Is activated.

Next, the drain water passes through a check valve (11) provided in the drain pipe (5) and is discharged through a position (10) lower than the detection position (6). The set time of the timer elapses after the drainage passes through the position (10) lower than the detection position, whereby the drainage pump (4) is stopped.

Since the present invention in this embodiment is a piping system as described above, the same effects as described in FIG. 1 can be obtained.

[0038]

According to the present invention, by shortening the operation time of the drain pump, the time during which vibration and noise are generated by the drain pump is shortened, and the burden and trouble of the drain pump are reduced, and an energy-saving drain control method is provided. Provided.

[Brief description of the drawings]

FIG. 1 is a piping system diagram showing one embodiment of the present invention.

FIG. 2 is a piping system diagram showing another embodiment of the present invention.

FIG. 3 is a piping system diagram showing one of other embodiments of the present invention.

FIG. 4 is a piping system diagram showing a conventional drainage control method.

[Explanation of symbols]

 Reference Signs List 1 floor 2 equipment using water 21 inflow pipe 3 drainage storage tank 31 water level detector 4 drainage pump 41 intake port 5 drainage pipe 51 horizontal pipe part 52 vertical pipe part 52a discharge port 6 detection position 7 signal line 8 pump control means 9 timer 10 Position 11 Check valve 12 Sewage basin 13 Sensor 14 Signal line 15 Sensor

Claims (4)

[Claims] When it is detected that the wastewater flowing into the drainage channel has reached a detection position in the drainage channel, a drainage pump provided behind the detection position of the drainage channel is operated to activate the drainage pump. The drainage discharged toward the discharge port by the drainage pump in the drainage path, the siphon due to its own weight in the drainage path. A drainage control method, wherein the drainage pump is stopped when the drainage pump reaches a position where the drainage can be sucked in front of the drainage pump due to a phenomenon. 2. The method according to claim 1, wherein a drainage storage tank for temporarily storing wastewater is provided in the drainage channel, and the drainage pump is operated when the wastewater flowing into the drainage storage tank reaches the detection position. 3. The drainage pump according to claim 1, wherein a sensor provided in the drainage channel detects that the wastewater has reached a position where the drainage can be sucked, and the drainage pump is stopped when a drainage detection signal is issued by the sensor. Drainage control method. 4. A timer is set in advance for the time from the start of operation of the drainage pump to the position where the drainage can be sucked, and when the timer issues a signal indicating that the set time has elapsed from the start of operation of the drainage pump, the drainage pump is set. The drainage control method according to claim 1, wherein the drainage is stopped.