JP2013007211A - Drainage device and drainage system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drainage device and a drainage system that can suppress noise and piping vibration generated when sucking sewage.SOLUTION: A drainage device includes: a first valve device 15 that communicates and blocks between its inflow port of sewage W connected to a suction pipe 31 and its outflow port by a change in operating negative pressure P; a negative pressure drainage pipe 32 that is connected to the outflow port and maintained in a negative pressure state; and an operating negative pressure control part 16 that changes the operating negative pressure P. The operating negative pressure control part 16 comprises: an operating negative pressure pipe 44 which is connected to the negative pressure drainage pipe 32 and into which the sewage W cannot be flow; a second valve device 41 that communicates and blocks between the operating negative pressure pipe 44 and the first valve device 15 to change the operating negative pressure P of the first valve device 15; a toilet bowl tank switch 23 that instructs the second valve device 41 to communicate between the operating negative pressure pipe 44 and the first valve device 15; and a timer 42 that instructs the second valve device 41 to block between the operating negative pressure pipe 44 and the first valve device 15 when the liquid level of the sewage W in a toilet bowl body 21 is located above the end of the suction pipe 31.

Description

  The present invention relates to a drainage device that is installed in a building and drains sewage and the like, and a drainage system.

As a drainage system, in addition to the gravity-type drainage system that drains water by utilizing the natural flow of sewage, sewage is discharged by the pressure difference from the atmospheric pressure by keeping the inside of the piping at a negative pressure using a vacuum pump. A vacuum type drainage system for sucking and draining is generally known.
For example, in a building such as a railway station building, it is easy to inspect and repair the drainage system and layout of the station building to cope with drainage generated from various places such as toilets, washstands, and kitchen facilities of restaurants. Considering the change of the installation position of the drainage system according to the change, a vacuum drainage system excellent in these is used.

  An example of the vacuum drainage system is disclosed in Patent Document 1. Specifically, the inside of the drain pipe is maintained in a substantially vacuum negative pressure state by a vacuum pump, and the valve is opened in this state to exert a negative pressure on the sewage, and the sewage is sucked and drained using the pressure difference. Is to do.

Japanese Patent No. 4445139

  However, in the vacuum-type drainage system of the above-mentioned patent document 1, when sucking sewage, gas such as air is sucked together with drainage, and thus noise and drainage vibration during drainage suction are generated. There was concern.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a drainage device and a drainage system capable of suppressing noise during suction of sewage and vibration of piping.

In order to solve the above problems, the present invention employs the following means.
That is, the drainage device according to the present invention is a drainage device that drains the liquid stored in the water storage part by a suction pipe having one end opened downward in the water storage part, and is connected to the other end of the suction pipe. A first valve device that has an inflow port through which the liquid flows in and an outflow port through which the liquid flows out, and that connects and blocks the inflow port and the outflow port by a change in operating negative pressure; A negative pressure drain pipe having one end connected to the inside and maintained in a negative pressure state, and an operating negative pressure control unit that changes the operating negative pressure to the first valve device, the operating negative pressure control unit comprising: An operating negative pressure pipe connected to the negative pressure drain pipe to prevent the liquid from flowing; and provided between the operating negative pressure pipe and the first valve device, the operating negative pressure pipe and the first valve device; The operating negative pressure to the first valve device is changed by communicating and blocking between A second valve device to be operated, an open command input means for instructing the second valve device to communicate between the operating negative pressure pipe and the first valve device, and a liquid level of the liquid stored in the water storage section And a close command input means for instructing the second valve device to shut off the operating negative pressure tube and the first valve device when the valve is above one end of the suction tube. And

In such a drainage device, when the opening command input means instructs the second valve device to open, the working negative pressure pipe and the first valve device are communicated with each other. Since the operating negative pressure pipe is held at a negative pressure by being connected to the negative pressure drain pipe, the operating negative pressure is applied from the operating negative pressure pipe to the first valve device, and the first valve device is opened. . As a result, the inlet and the outlet are in communication with each other, and the liquid can be sucked and drained by the negative pressure in the negative pressure drain pipe.
Thereafter, the closing command input means instructs the second valve device to shut off, and the working negative pressure pipe and the first valve device are shut off. Therefore, the operating negative pressure is no longer exerted on the first valve device from the operating negative pressure pipe, and the first valve device can shut off between the inflow port and the outflow port and stop the drainage of the liquid.
At this time, the liquid level of the liquid stored in the water storage section is higher than one end of the suction pipe, and the drainage of the liquid is stopped. Only can be sucked and drained.

  The closing command input means may be a timer that shuts off after a predetermined time has elapsed after the negative pressure pipe communicates with the first valve device.

  Such a timer makes it possible to stop draining at a preset timing. That is, when draining, the second valve device is closed in a state where the liquid level of the liquid stored in the water storage section is higher than one end of the suction pipe so as not to suck in gas such as air in the water storage section, A timer can be set to stop draining, and only liquid can be reliably sucked and drained. As a result, it is possible to suppress noise and piping vibration that are generated when the gas is sucked together with the liquid.

  Further, the open command input means may be a manual switch that communicates between the negative pressure pipe and the first valve device when touched from the outside.

  By opening the second valve device with such a manual switch, the negative pressure pipe and the first valve device can be communicated with each other at any timing and drainage can be started.

  The open command input means may be a water level sensor that detects a water level of the liquid in the water storage section and communicates between the negative pressure pipe and the first valve device.

  By using such a water level sensor, when the water level in the water reservoir reaches a predetermined value, the negative pressure pipe and the first valve device can automatically communicate with each other and drainage can be started.

  Furthermore, the drainage system according to the present invention is connected to the drainage device described above, the other end of the negative pressure drainage pipe, collects the liquid, and sets the water collection part and the negative pressure drainage pipe to a negative pressure. And a negative pressure source for holding.

  In such a drainage system, the liquid is sucked and drained into a negative pressure drain pipe and collected in a water collecting section. Here, since this water collection part is sealed and kept in a negative pressure state by a negative pressure source, it is kept in a negative pressure state together with a negative pressure drain pipe connected to this water collection part. Gas such as air does not enter the drain pipe. Therefore, only the liquid can be sucked during drainage, and noise and piping vibration can be suppressed.

  According to the drainage device and drainage system of the present invention, only the liquid can be sucked and drained by the negative pressure drain pipe held in a negative pressure state, and noise and vibration of the pipe can be suppressed.

1 is an overall view of a drainage system according to a first embodiment of the present invention. It is a figure which shows the outline | summary of the 1st valve apparatus in the drainage system which concerns on 1st embodiment of this invention. It is a whole view of the drainage system concerning a second embodiment of the present invention. It is a figure which shows the relationship between the waste_water | drain detection tank (water storage part), the water level sensor, and suction pipe in the drainage system which concerns on 2nd embodiment of this invention.

Hereinafter, with reference to FIG.1 and FIG.2, 1 A of drainage systems which concern on 1st embodiment of this invention are demonstrated.
The drainage system 1A is installed, for example, in a building such as a railway station building, and drains it toward a public sewer (not shown) after sucking sewage (liquid) W generated from toilets, washstands, kitchen facilities of restaurants, and the like. is there.
In addition, the sewage W is not limited to a liquid, What is necessary is just fluidity, and the solid substance may mix.
And the installation place of 1 A of drainage systems is not restricted to a railway station building, An apartment, an office building, etc. may be sufficient.

  This drainage system 1A includes a toilet unit 11 that is a generation source of sewage W, a water collection unit 12 that stores sewage W, a vacuum pump (negative pressure source) 13 that holds the water collection unit 12 in a negative pressure state, Connection pipe group 14 connecting between the toilet part 11 and the water collecting part 12, a first valve device 15 disposed in the middle of the connection pipe group 14, and an operating negative for instructing the first valve device 15 to open and close Pressure control unit 16.

  The toilet part 11 has a toilet body (water storage part) 21 in which the sewage W temporarily stays, and a toilet tank 22 that stores water used when draining the stayed sewage W. A toilet tank switch (open command input means) 23 is provided on a side surface of the tank 22. The toilet tank switch 23 is a switch for causing the water in the toilet tank 22 to flow into the toilet body 21 and starting the drainage of the sewage W accumulated in the toilet body 21.

  The water collection unit 12 is a metal container or the like having a hollow interior, collects the sewage W from the toilet unit 11 via the connection pipe group 14, and temporarily stores it. Moreover, it seals so that gas, such as air from the outside, may be cut off from the outside so as not to enter the inside of the water collecting section 12.

  Further, the water collecting section 12 includes a discharge pipe 17 that is connected via a drain valve (not shown) and discharges the sewage W toward a public sewer and the like, and an air release valve (not shown) that is linked to the drain valve. Yes. And in the case of drainage, by opening these drainage valves and the air release valve, the water collection part 12 will be in the state of atmospheric pressure, Therefore It becomes possible to drain by connecting to general gravity drainage.

The vacuum pump 13 is connected to the water collection unit 12 via a negative pressure pipe 18 and drives a rotor, a piston, and the like provided therein by an electric motor, and sucks and exhausts air inside the water collection unit 12 to collect the air. A negative pressure state close to a vacuum is created inside the water part 12.
The water collecting unit 12 is provided with a pressure switch (not shown), and the internal pressure of the water collecting unit 12 can be adjusted by the pressure switch.

  The connecting pipe group 14 is constituted by a suction pipe 31 and a negative pressure drain pipe 32 which are tubular members made of synthetic resin or the like. The suction pipe 31 has one end connected to the toilet unit 11 and the other end connected to the first valve device 15. The negative pressure drain pipe 32 has one end connected to the first valve device 15 and the other end. Is connected to the water collecting section 12.

  As described above, the first valve device 15 is disposed between the suction pipe 31 and the negative pressure drain pipe 32, and has an inlet 55 connected to the other end of the suction pipe 31 and one end of the negative pressure drain pipe 32. And an outlet 56 connected thereto.

In addition, the first valve device 15 includes a piston 52 that is reciprocally movable inside a casing 51 that is hollow inside, and an on-off valve 53 that is reciprocally movable integrally with the piston 52. And a hole portion 54 as an air inflow / outlet hole for reciprocating the piston 52 by exerting air pressure change on the piston 52 from the outside.
The piston 52 and the on-off valve 53 are provided so as to communicate and block between the inflow port 55 and the outflow port 56 by reciprocating.

The operating negative pressure control unit 16 has one end connected to the hole 54 of the first valve device 15, the second valve device 41 connected to the other end of the connection tube 43, and one end connected to the second valve device 41. The valve device 41 is connected to the negative pressure drain pipe 32 at the other end, and has an operating negative pressure pipe 44 that is maintained in a negative pressure state. The operating negative pressure control unit 16 reciprocates the piston 52 and the on-off valve 53 in the first valve device 15.
Further, the negative pressure drain pipe 32 and the working negative pressure pipe 44 are connected so that only gas can flow in and out.

The second valve device 41 is connected to the toilet tank switch 23 and is an electromagnetic valve that opens the valve in conjunction with the operation of the toilet tank switch 23.
The second valve device is provided with a timer (close command input means) 42 for closing the valve after a predetermined time has elapsed since the valve was opened.

  The timer 42 starts the drainage of the sewage W staying in the toilet body 21 and then closes the second valve device 41 in a state where the level of the sewage W is higher than one end of the suction pipe 31. Time is set to do. That is, the time is determined by the amount of the sewage W and the magnitude of the negative pressure.

  In such a drainage system 1A, by operating the toilet tank switch 23, the operating negative pressure control unit 16 is operated in conjunction with it, the second valve device 41 is opened, and the operating negative pressure pipe 44 and the connecting pipe 43 communicate with each other. Is done. Since the other end of the operating negative pressure pipe 44 is connected to the negative pressure drain pipe 32, the inside is held at a negative pressure. Therefore, when the second valve device 41 is opened, the connection pipe 43 is negative. The negative pressure reaches the first valve device 15. Therefore, this negative pressure, that is, the operating negative pressure P is exerted on the first valve device, the piston 52 and the on-off valve 53 in the first valve device 15 are operated, and the on-off valve 53 opens the outlet 56, thereby The inlet 55 and the outlet 56 are communicated.

  Here, since the negative pressure drain pipe 32 and the suction pipe 31 are communicated with each other by the communication between the inlet 55 and the outlet 56, the negative pressure in the negative pressure drain pipe 32 is transferred to the sewage W via the suction pipe 31. Works. Accordingly, the sewage W is sucked into the suction pipe 31 by the action of the negative pressure, and drainage is started toward the water collecting part 12 through the negative pressure drain pipe 32.

  Then, when the timer 42 is set in advance, the operation of the second valve device 41 is instructed to close the working negative pressure pipe 44 and the connection pipe 43. Therefore, since the connection pipe 43 is cut off from the negative pressure drain pipe 32 whose interior is held at a negative pressure, the connection pipe 43 escapes from the negative pressure state. As a result, the operating negative pressure P changes, the piston 52 and the opening / closing valve 53 in the first valve device 15 are operated, the opening / closing valve 53 closes the outlet 56, and the gap between the inlet 55 and the outlet 56. Cut off.

  As described above, since the gap between the inlet 55 and the outlet 56 is blocked, the gap between the negative pressure drain pipe 32 and the suction pipe 31 is blocked. Therefore, the negative pressure in the negative pressure drain pipe 32 is applied to the suction pipe 31. The drainage of the sewage W is stopped.

  Here, in the present embodiment, the timer 42 is operated at a position where the level of the sewage W is higher than one end of the suction pipe 31. That is, the suction time is adjusted in accordance with the amount of drainage from the toilet body 21, so that only the sewage W can be sucked and drained. As a result, it is possible to suppress noise and piping vibration that are generated when a gas such as air is sucked.

  According to the drainage system 1 </ b> A according to the present embodiment, the drainage of the sewage W can be stopped in a state where the level of the sewage W of the toilet body 21 is higher than one end of the suction pipe 31. For this reason, suction of gas, such as air at the time of drainage, can be avoided, and noise and vibration of piping can be controlled.

  In addition, the drainage system 1A can suppress noise and vibration of the piping, and at the same time operates by supplying power only to the vacuum pump 13, and sucks and drains the sewage W using a pressure difference without requiring a drainage gradient or the like. Because it is possible, the choice of the installation location is expanded. For example, it can be installed in the mountains where installation has been difficult until now or in the vicinity of a nursing bed.

Furthermore, since the power equipment used in the drainage system 1A is only the vacuum pump 13,
Easy maintenance and cost reduction can be achieved.

  Since the negative pressure drain pipe 32 is completely sealed and maintained in a negative pressure state, the sewage W and the odor generated from the sewage W do not have to be leaked to the outside and are hygienic.

  Moreover, in the drainage system 1A, the suction head pressure of the sewage W is maintained as necessary by maintaining a negative pressure state by intermittent operation of the vacuum pump, or by adjusting the pressure switch (not shown) of the water collecting unit 12. Energy saving can be achieved because the setting can be easily changed.

Next, with reference to FIG.3 and FIG.4, the drainage system 1B which concerns on 2nd embodiment is demonstrated. In addition, the same code | symbol is attached | subjected to the component similar to 1st embodiment, and detailed description is abbreviate | omitted.
In the drainage system 1B, the source of the sewage W includes a sink 61, a drainage detection rod (water storage unit) 63 for temporarily storing the sewage W from the sink 61 via the drainage pipe 62, and a water level in the drainage detection rod 63. It differs from the drainage system 1A of 1st embodiment by the point which has the water level sensor (open command input means) 64 to detect.

The sink 61 is a metal container having an opening in the upper part.
One end of a drain pipe 62 is connected to the lower part of the sink 61.

  The drainage detection rod 63 is a container made of metal or the like, is connected to the other end of the drainage pipe 62, receives the sewage W generated in the sink 61, and stores a certain amount of this sewage W. One end of the suction pipe 31 is connected to the drainage detection rod 63.

  The water level sensor 64 is a water level measuring instrument having a sensor bar 65 for detecting the water level. One end 66 of the sensor bar 65 is inserted from above the drainage detection rod 63, and the other end 67 is a second valve device. 41.

  In such a drainage system 1B, the sewage W from the sink 61 flows into the drainage detection rod 63 and is stored up to a certain amount. When the liquid level of the sewage W comes into contact with the one end 66 of the sensor rod 65, the water level sensor 64 detects that electricity has passed between the sensor rod 65 and the sewage W, and the second valve device 41 is Instruct to open.

  When the second valve device 41 is opened, the working negative pressure pipe 44 and the connection pipe 43 are communicated, and the working negative pressure P is exerted on the first valve device 15. Then, the on-off valve 53 of the first valve device 15 opens the outlet 56, communicates the inlet 55 with the outlet 56, the sewage W stored in the drainage detection rod 63, the negative pressure in the negative pressure drainage pipe 32. Acts through the suction tube 31. As a result, the sewage W is sucked into the suction pipe 31 and drainage is started toward the water collecting section 12 through the negative pressure drain pipe 32.

  Thereafter, as in the first embodiment, the timer 42 instructs the closing of the second valve device 41 at a preset timing, whereby the working negative pressure pipe 44 and the connection pipe 43 are disconnected, and the first In the valve device 15, the opening / closing valve 53 closes the outflow port 56, shuts off between the inflow port 55 and the outflow port 56 and stops drainage.

  At this time, the liquid level height of the sewage W of the drainage detection rod 63 is in a position higher than one end of the suction pipe 31, and the timer 42 closes the second valve device 41. Therefore, the suction pipe 31 is made of air or the like. Only the sewage W can be drained without sucking the gas. Therefore, noise generated when a gas such as air is sucked and vibration of the pipe can be suppressed.

  According to the waste water W system 1 </ b> B according to the present embodiment, drainage of the waste water W can be stopped in a state where the liquid surface height of the waste water W of the waste water detection rod 63 is higher than one end of the suction pipe 31. For this reason, attraction | suction of gas, such as air at the time of drainage of the sewage W, can be avoided and a noise and vibration of piping can be suppressed.

  Further, at the same time as suppressing noise and vibration of the piping, the drainage system 1B can be operated by supplying power only to the vacuum pump 13, as in the first embodiment. Further, since the power device is only the vacuum pump 13, maintenance and cost reduction can be achieved.

Further, in the drainage system 1B, similarly to the drainage system 1A, the suction head pressure of the sewage W can be adjusted as necessary by maintaining the negative pressure state by intermittent operation of the vacuum pump or adjusting the pressure switch of the water collecting unit 12. Energy savings can be achieved because settings can be changed easily.
And since the negative pressure drain pipe 32 is completely sealed and kept in a negative pressure state, the sewage W and the odor generated from the sewage W do not have to be leaked to the outside, which is sanitary.

The embodiment of the present invention has been described in detail above, but some design changes can be made without departing from the technical idea of the present invention.
For example, the water level sensor 64 is not limited to the one described above, and a sensor provided with a cover that covers the periphery of the sensor rod 65 may be used. In this case, it is possible to prevent the second valve device 41 from being opened due to erroneous detection even when the liquid level temporarily fluctuates due to, for example, undulation of the liquid level in the drainage detection rod 63.

  In addition, the water level of the drainage detection rod 63 can be measured using a water level measuring device other than the water level sensor 64. For example, a float type that sends a detection signal to measure the water level by moving the float up and down according to changes in the liquid level, or by detecting the time until the reflected wave is received by sending an ultrasonic wave and reflecting it at the liquid level An ultrasonic method for measuring the water level, a pressure method for measuring the water level from the pressure of the stored sewage W, or the like can be used.

  Furthermore, it is also possible to install a plurality of drainage systems 1A according to the first embodiment and a plurality of drainage systems 1B according to the second embodiment.

  Further, by adjusting the suction force of the sewage W by a pressure switch (not shown) installed in the water collecting section 12 and setting the amount of drainage, it can be applied to various drainage systems according to the installation location and form. At this time, by setting the operation time of the timer 42 in accordance with the amount of drainage of the sewage W and the pressure in the water collecting unit 12, suction of gas such as air when the sewage W is drained can be avoided.

  Further, when the sewage W is drained from the water collection unit 12 to the public sewer, the water collection unit 12 is not in a negative pressure state. Therefore, the negative pressure drain pipe 32 and the operation negative are discharged until the drainage to the public sewer is stopped. A negative pressure state cannot be created inside the pressure tube 44. For this reason, although drainage systems 1A and 1B cannot be operated, in this case, it becomes possible to always operate drainage systems 1A and 1B by providing a plurality of water collecting parts 12 in parallel.

DESCRIPTION OF SYMBOLS 1A ... Drainage system, 1B ... Drainage system, 11 ... Toilet part (water storage part), 12 ... Catchment part, 13 ... Vacuum pump (negative pressure source), 14 ... Connection piping group, 15 ... First valve device, 16 ... Operation negative pressure control unit, 17 ... discharge pipe, 18 ... negative pressure pipe, 21 ... toilet bowl body, 22 ... toilet bowl tank, 23 ... toilet bowl switch, 31 ... suction pipe, 32 ... negative pressure drain pipe, 41 ... second valve device, 42 ... Timer, 43 ... Connecting pipe, 44 ... Working negative pressure pipe, 51 ... Housing, 52 ... Piston, 53 ... Open / close valve, 54 ... Hole, 55 ... Inlet, 56 ... Outlet, 61 ... Sink, 62 ... Drain pipe, 63 ... Drainage detection tank (water storage part), 64 ... Water level sensor, 65 ... Sensor rod, 66 ... One end part, 67 ... Other end part, W ... Drainage (liquid), P ... Working negative pressure

Claims (5)

A drainage device for draining the liquid stored in the water storage part by a suction pipe whose one end opens downward in the water storage part,
The inlet is connected to the other end of the suction pipe and has an inlet through which the liquid flows in and an outlet through which the liquid flows out, and the inlet and the outlet are communicated and blocked by a change in operating negative pressure. A first valve device;
A negative pressure drain pipe, one end of which is connected to the outlet and the inside is maintained in a negative pressure state;
An operating negative pressure control unit that changes the operating negative pressure to the first valve device,
The operating negative pressure control unit is
An operating negative pressure pipe connected to the negative pressure drain pipe to prevent the liquid from flowing in;
It is provided between the operating negative pressure pipe and the first valve device, and the operating negative pressure to the first valve device is changed by communicating and blocking between the operating negative pressure tube and the first valve device. A second valve device,
An opening command input means for instructing communication between the operating negative pressure pipe and the first valve device with respect to the second valve device;
When the liquid level of the liquid stored in the water reservoir is above one end of the suction pipe, the second valve apparatus is instructed to shut off the working negative pressure pipe and the first valve apparatus A drainage device comprising: a closing command input means.   2. The drainage device according to claim 1, wherein the closing command input means is a timer that shuts off after a lapse of a certain time after the negative pressure pipe communicates with the first valve device.   The drainage device according to claim 1 or 2, wherein the opening command input means is a manual switch that communicates between the negative pressure pipe and the first valve device when touched from outside.   The said opening command input means is a water level sensor which detects the water level of the said liquid of the said water storage part, and connects between the said negative pressure pipe and the said 1st valve apparatus, The Claim 1 or 2 characterized by the above-mentioned. Drainage equipment. The drainage device according to any one of claims 1 to 4,
A water collecting part connected to the other end of the negative pressure drain pipe and collecting the liquid;
A drainage system comprising: the water collecting section and a negative pressure source that holds the negative pressure drain pipe at a negative pressure.

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