JP2020033769A - Siphon drainage system and washing method of siphon drainage system - Google Patents

Abstract

To provide the siphon drainage system and the washing method thereof, wherein the siphon drainage system allows for washing of the inside of piping upstream of a storage part of a trap.SOLUTION: The siphon drainage system of the present invention comprises: the trap with the storage part where drainage can accumulate; a vent valve provided downstream of the storage part; and a siphon drainage pipe provided downstream of the vent valve, wherein the vent valve allows an arbitrary opening and closing operation of the vent valve. Further, the washing method of the siphon drainage system according to the present invention is a method for washing the siphon drainage system that has the trap with the storage part where the drainage can accumulate, a normally-closed vent valve provided on a downstream side of the storage part, and a siphon drainage pipe provided downstream of the vent valve, and the method comprises a step of maintaining a closed state of the vent valve during generation of a siphon force.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a siphon drainage system and a method for cleaning a siphon drainage system.

In recent years, a siphon drainage structure has been proposed as an alternative to the conventional gradient drainage structure (for example, Patent Document 1). The siphon drainage structure connects the siphon drainage pipe to the plumbing equipment, and uses the siphon force (negative pressure) generated by the vertical pipe forming the hanging part of the siphon drainage pipe to improve the drainage efficiency from the plumbing equipment. It is a structure to make it.
Here, the siphon drainage structure is a plumbing device, a trap that is connected to the downstream side of the plumbing device, and has a storage portion in which drainage can accumulate, a vent valve provided downstream of the storage portion, It can have a siphon drain provided downstream of the storage section. In such a siphon drainage structure, usually, the trapped water is sufficiently stored in the trap storage portion, thereby shutting off the space between the upstream side and the downstream side of the trap through the water seal. (Hereinafter, "the state in which the space between the upstream side and the downstream side of the trap is blocked by water sealing" is also referred to as "water sealing state"). For example, intrusion of odors and pests from the downstream side is prevented. Also, in this siphon drainage structure, a ventilation valve is provided downstream of the trap storage part, through which air is taken in when siphon force is generated, thereby allowing the trap to be trapped along with the siphon force. This prevents the drainage from decreasing and causing breakage.

JP-A-2006-196744

  By the way, in the siphon drainage system as described above, the drainage is forcibly discharged at a high flow rate by the siphonic force (suction force) in the piping to which the siphoning force is applied. The inside is relatively cleaned. On the other hand, in the pipe upstream of the storage part of the trap, when the siphon force is generated, the vent valve operates so that the siphon force does not reach and the drainage does not flow at a high flow rate. Such a dirt removing action does not occur, and dirt tends to accumulate in the pipe.

  The present invention is to solve the above-described problems, and can wash the inside of the pipe upstream of the trap storage, siphon drainage system, and can wash the inside of the pipe upstream of the trap storage, An object of the present invention is to provide a method for cleaning a siphon drainage system.

The siphon drainage system according to the present invention includes a trap having a storage part in which drainage can be stored, a vent valve provided downstream of the storage part, and a siphon drain pipe provided downstream of the vent valve. The vent valve can arbitrarily open and close the vent valve.
ADVANTAGE OF THE INVENTION According to the siphon drainage system of this invention, since the opening / closing operation | movement of a ventilation valve can be performed arbitrarily, the inside of the piping upstream from the storage part of a trap can be wash | cleaned.

In the siphon drainage system of the present invention, it is preferable that the vent valve is a normally-closed valve, and that the user can arbitrarily operate the vent valve to maintain the closed state. According to this configuration, the user can supply the sealed water to the trap by noticing the breakage.
In the present invention, the term “normally closed valve” means that the vent valve normally opens (for example, a state in which an operation or operation that maintains the closed state of the vent valve is not performed) with respect to the vent valve. Refers to a valve that is in a closed state unless external force is applied, and the `` external force '' means, for example, if the vent valve is a Dolgo vent valve, the pressure inside the vent valve is lower. It refers to the force generated by the pressure difference between the inside and the outside, and the force generated by excitation (energization) if, for example, the ventilation valve is an electromagnetic valve.

  In the siphon drainage system of the present invention, the siphon drainage system has a siphon force detection unit that detects that siphon force has been generated in the siphon drain pipe, the vent valve is a normally closed valve, and the siphon force detection is performed. It is more preferable that the unit detects the generation of the siphon force and operates so that the closed state of the ventilation valve is maintained. According to this configuration, cleaning can be performed at an appropriate timing.

In the siphon drainage system of the present invention, the siphon drainage system has a drainage detection unit that detects that drainage is not being performed, and the drainage detection unit detects that drainage is not being performed, It is preferable that the maintenance of the closed state of the ventilation valve is released. According to this configuration, the trap can be prevented from being broken.
In the present invention, `` drainage is not performed '' is, for example, after the use of water supply in the plumbing equipment, after the use of the disposer provided in the plumbing equipment, and the like, This refers to a state in which water remains in an area for receiving water (tap) in a water-supply device or in a disposer, and some drainage can be discharged therefrom.

  In the siphon drainage system of the present invention, it is preferable that the siphon drainage system include a water-sealing filling mechanism that supplies water to the storage part of the trap in conjunction with the release of the closed state of the ventilation valve. . According to this configuration, even if the trap is broken, the water sealing can be recovered.

In the method for cleaning a siphon drainage system according to the present invention, a trap including a storage part in which drainage can be stored, a trap valve provided downstream of the storage part, a normally-closed ventilation valve, and a trap valve provided downstream of the ventilation valve are provided. A method for cleaning a siphon drainage system having a siphon drainage pipe, the method including a step of maintaining a closed state of the ventilation valve during generation of siphon power.
According to the cleaning method of the siphon drainage system of the present invention, the opening operation of the ventilation valve can be arbitrarily performed, so that the inside of the pipe upstream of the storage part of the trap can be cleaned.

  ADVANTAGE OF THE INVENTION According to this invention, the siphon drainage system which can wash the inside of the piping upstream from the storage part of a trap, and its washing | cleaning method can be provided.

It is the schematic which shows the siphon drainage system which concerns on one Embodiment of this invention. It is sectional drawing which shows an example of the ventilation valve of FIG. It is a partial sectional view showing a part of the siphon drainage system concerning the modification of one embodiment of the present invention after drainage was completed, and it was in a state where seal water had run out. It is a perspective view which shows a part of siphon drainage system shown in FIG. It is a perspective view which shows a part of 1st example which deformed the siphon drainage system shown in FIG. It is a perspective view which shows a part of 2nd example which deform | transformed the siphon drainage system shown in FIG.

An embodiment of the present invention will be described below with reference to the drawings.
First, a siphon drainage system according to an embodiment of the present invention will be described with reference to FIG.
The siphon drainage system 10 illustrated in FIG. 1 includes a plumbing device 11, a first drainage pipe 12, a trap 13, a ventilation valve 14, a straight pipe 15, a horizontal drawing pipe 16, a vertical pipe 17, and a junction joint 18. It is constituted by a merging pipe 19 connected to the main body. The plumbing device 11 in the example shown in FIG. 1 is a kitchen sink, and a drainer is provided with a disposer 20. The type of the plumbing unit 11 is not particularly limited as long as it drains water, and may be a dishwasher, a wash basin, a washing machine, a bathtub provided in a bath such as a unit bath, a washbasin, a toilet, and the like. it can.

  Specifically, on the floor panel 20 of the house, a plumbing device 11 is disposed, and the drainage system 10 includes a first drain pipe 12 connected to the plumbing device 11 from the plumbing device 11, It has a trap 13 provided on the downstream side of the plumbing device 11 and having a storage section 131 in which drainage can be stored, and a vent valve 14 provided on the downstream side of the storage section 131. In such a siphon drainage system 10, normally, the sealed portion is sufficiently stored in the storage section 131 of the trap 13, and thereby, the space between the upstream side and the downstream side of the trap 13 is sealed. For example, it is possible to prevent intrusion of odors and pests from the downstream side. Further, in the siphon drainage system 10, when a siphon force (negative pressure) is generated, the ventilation valve 14 is opened and air is taken in through the ventilation valve 14, so that the pressure in the pipe returns to normal pressure and the pipe is sealed. It is possible to prevent running out of water (opening) (a sealed state can be maintained).

Next, the siphon drainage system 10 is connected to the downstream side of the trap 13, and is connected to the straight pipe 15 for guiding drainage to the vicinity of the floor slab 22 under the floor panel 20, and is connected to the downstream side of the straight pipe 15, and is connected to the horizontal direction. And a vertical pipe 17 connected to the downstream side of the horizontal pulling pipe 16 and penetrating through the piping hole 23 of the floor slab 22, and connected to the downstream side of the vertical pipe 17 via a joining joint 18. And a merging pipe 19 to be formed. The horizontal drawing pipe 16 is formed of a pipe thinner than the pipe used for the conventional gradient drainage, and is installed substantially horizontally (substantially no gradient).
In addition, the siphon drainage pipe 24 of the siphon drainage system 10 according to the embodiment of the present invention is a pipe provided on the downstream side of the storage part 131 of the trap 13, and in the example of FIG. It is constituted by a pipe 16 and a vertical pipe 17.
In such a siphon drainage system 10, the drainage flowing from the plumbing device 11 is liable to be filled with drainage in the horizontal drawing pipe 16. Wastewater flows in, and siphon force can be generated by causing the wastewater to flow downward. The lateral drawing pipe 16 is drained by being pulled by the generated siphon force.

  The merging pipe 19 is a pipe having a larger diameter than the horizontal drawing pipe 16 and the vertical pipe 17, and is provided to penetrate the building vertically. As described above, the merging pipe 19 is connected to the drainage channel from the plumbing device 11, but is also connected to the drainage channel from another plumbing device (not shown), and is connected to a purification tank (not shown) on the downstream side. I have.

  Here, in the siphon drainage system 10 of the present embodiment, the ventilation valve 14 can open and close the ventilation valve 14 arbitrarily. Therefore, in the present embodiment, the inside of the pipe on the upstream side of the storage section 131 of the trap 13 can be arbitrarily washed. Specifically, as described above, normally, when siphon power is generated by the drainage supplied from the plumbing device 11, the vent valve 14 provided in the siphon drainage system 10 is opened, and the water is cut off. Not to be. On the other hand, for example, the opening / closing operation of the ventilation valve 14 when a siphon force is generated is maintained so that the ventilation valve 14 is in a closed state (in the case of a normally closed type) or operated (in the case of a normally open type), The siphon force reaches the pipe upstream of the storage portion 131 of the trap 13 through the water sealing in the trap 13, and the drainage supplied from the plumbing equipment 11 is forcibly forced by the suction force of the siphon force. It can be drained and the tubing cleaned.

By the way, the ventilation valve 14 is not particularly limited, and may be, for example, a normally-open or normally-closed valve. From the viewpoint of preventing the odor in the drain pipe from leaking through the ventilation valve 14 without operating the ventilation valve 14 when the siphon drainage system 10 is not used, it is preferable to use a normally closed valve. The normally closed ventilation valve 14 is not particularly limited, but a Dolgo ventilation valve, a solenoid valve, or the like can be used.
Further, in the present embodiment, although not shown, in order to allow the opening and closing operation of the ventilation valve 14 to be performed arbitrarily, in addition to the ventilation valve 14, for example, the ventilation valve 14 and a drain pipe (the trap 13 and the siphon The connecting pipe 25 (see FIG. 1) connecting the drain pipe 24) can be additionally provided with an additional valve that can be arbitrarily opened and closed to shut off the ventilation valve 14 and the drain pipe. Can be arbitrarily performed. Specifically, for example, the ventilation valve 14 is a normally-closed valve, and the connection pipe 25 is provided with a normally-open valve (for example, a normally-open solenoid valve) that can be arbitrarily closed as an additional valve. The opening and closing operation of the ventilation valve 14 can be arbitrarily performed via an additional valve.

  In addition, in the siphon drainage pipe system of the present embodiment, the opening and closing operation of the ventilation valve 14 is arbitrarily performed, whereby a siphon force can be exerted on the pipe on the upstream side of the storage part 131 of the trap 13 (as a result, the upstream side Can clean the inside of the pipe). Then, in the present siphon drainage pipe system, a siphon force is generated in the siphon drainage pipe 24 except when the opening / closing operation of the ventilation valve 14 is arbitrarily performed (for example, in many cases when the plumbing device 11 is used). However, in order to prevent the water in the reservoir 131 of the trap 13 from being completely filled, it is preferable that the ventilation valve 14 be opened and closed naturally so that external air can be taken into the siphon drain pipe 24. As described above, the state in which the vent valve 14 opens and closes naturally in order to prevent the water sealing from running out in many cases when the water supply device 11 is used is also referred to as a “normal operation state”.

  Here, in the first aspect of the present embodiment, with respect to the ventilation valve 14, the ventilation valve 14 is a normally-closed valve, and the user (for example, the user of the plumbing device 11) arbitrarily sets the ventilation valve 14. The operation can be performed so that the closed state is maintained (hereinafter, the operation that maintains the closed state of the ventilation valve 14 is also referred to as a “closed state maintaining operation”). Therefore, since the operation can be performed at the timing of the user, the inside of the pipe can be cleaned at any time. In addition, as a result of the operation by the user, if the operation of maintaining the closed state of the ventilation valve 14 is performed for an excessively long time, for example, the supply of the drainage from the plumbing device 11 is stopped, and there is a possibility that the device is broken. The user can supply the sealed water to the storage section 131 of the trap 13 by noticing it.

  The method by which the user operates to maintain the closed state of the ventilation valve 14 is not particularly limited. For example, as shown in FIG. 2, if the ventilation valve 14 is a Dolgo ventilation valve, By holding the fixed portion 142 for keeping the movable plate 141 from moving, the closed state maintaining operation can be performed. Specifically, the Dolgo ventilation valve has a movable plate 141, a valve cylinder 143 (portion connected to a pipe), a rubber seal 144, and a valve dome 145. Normally, when the inside of the ventilation valve 14 is at normal pressure, there is no difference between the pressure inside the ventilation valve 14 and the pressure outside the ventilation valve 14. Therefore, the force applied to the rubber seal portion 144 is only gravity, and the rubber seal portion 144 By pressing the opening 146, the valve is closed. On the other hand, when the inside of the ventilation valve 14 has a negative pressure, the pressure outside the ventilation valve 14 is applied to the rubber seal portion 144 from below to above in the drawing, and the rubber seal portion 144 is moved together with the movable plate 141. Is pushed up and the opening 146 is opened to open the valve. 2, the valve dome portion 145 is provided with a fixing portion 142 that penetrates through and slides the valve dome portion 145, and an attachment portion 147 for attaching the fixing portion 142 to the valve dome portion 145. The fixed state 142 prevents the movable platen 141 and the rubber seal 144 from moving, so that the closed state maintaining operation can be performed.

As another method by which the user operates so that the closed state of the ventilation valve 14 is maintained, if the fixing portion 142 can be screwed to the mounting portion 147 in FIG. By turning the 142 and pressing the movable plate 141, the closed state maintaining operation can be performed. In addition, by making the outer diameter of the fixing portion 142 slightly larger than the inner diameter of the mounting portion 147 and forming each of the resin material, the fixing portion 142 can be press-fitted into the mounting portion 147, and the user can keep pressing down. The closed state maintaining operation can be performed without the operation. Further, if the fixing portion 142 is made movable by, for example, a motor or the like provided on the mounting portion 147 and its operation is made electronically operable, the user can remotely perform the closed state maintaining operation. When the fixing portion 142 is provided in this manner, the normal operation state can be achieved by positioning the fixing portion 142 so as to be sufficiently separated from the movable plate 141.
Furthermore, if the ventilation valve 14 is an electromagnetic valve, the user can perform a closed state maintaining operation by electronically operating the electromagnetic valve. In the case of using an electromagnetic valve, for example, after a siphon force detection unit described later is provided, the siphon force detection unit detects that a siphon force has been generated, and the signal is used to automatically open the electromagnetic valve. By doing so, a normal operation state can be set.

  Further, as still another method of operating the user to maintain the closed state of the ventilation valve 14, a method of not operating the movable plate 141 in the ventilation valve 14 as illustrated in FIG. In addition, an additional valve such as a normally open valve or a solenoid valve is provided in the connecting pipe 25 connecting the ventilation valve 14 and the drain pipe (the trap 13 or the siphon drain pipe 24) so that the user can close the valve. The operation of maintaining the closed state can be performed manually or remotely so that the siphon force is not applied to the ventilation valve 14 by an additional valve, and the closed state of the ventilation valve 14 is maintained. Is done).

  Further, in the siphon drainage system 10 of the present embodiment, as described above, as a result of the user operating to maintain the closed state of the ventilation valve 14, for example, the closed state maintaining operation is performed for a long time, There is a possibility that the supply of drainage will be lost from 11 and the container will be broken. When the seal is broken in this manner, the user can supply the sealed water as described above. For example, as described above, the fixing portion 142 can be moved by, for example, a motor, or the vent valve 14 can be supplied. When the closed state maintaining operation is made electronically operable, for example, when the solenoid valve is used as an additional valve, or after the user performs the closed state maintaining operation, the closed state maintaining operation is performed after a predetermined time has elapsed. Can be automatically released (that is, it can have a timer function). Specifically, if a predetermined time has elapsed after the closed state maintaining operation is performed and the maintenance of the closed state of the ventilation valve 14 is released, and if the siphon force continues to be generated, the ventilation valve 14 is opened. , It is possible to prevent the occurrence of water breakage (opening) (the water sealing state is maintained).

Subsequently, a second aspect of the present embodiment will be described. The first mode is a mode in which the user operates so that the closed state of the ventilation valve 14 is maintained. The second mode is a mode in which the closed state of the ventilation valve 14 is automatically maintained. This is a mode of operation. Specifically, in the second aspect of the present embodiment, the siphon drainage system 10 has a siphon force detection unit that detects that siphon force has been generated in the siphon drain pipe 24, and the ventilation valve 14 is a normally closed valve. It has become. Furthermore, the siphon drainage system 10 operates so that the closed state of the ventilation valve 14 is maintained by the siphon force detection unit detecting the generation of the siphon force (hereinafter, the closed state of the ventilation valve 14 is maintained). This operation is also referred to as “closed state maintaining operation”). By doing so, it is possible to clean the inside of the pipe upstream of the storage section 131 of the trap 13 at an appropriate timing.
Here, the operation of maintaining the closed state of the ventilation valve 14 is performed by receiving a signal from the siphon force detection unit, and controlling the control unit that operates so as to maintain the closed state of the ventilation valve 14 based on the signal to drain the siphon. It can be provided in the system 10 and operated by the control unit.

  As a method of operating the vent valve 14 to maintain the closed state, as described in the first aspect of the present embodiment, if the vent valve 14 is a Dolgo vent valve, the method is illustrated in FIG. The fixed portion 142 to be moved can be moved by, for example, a motor or the like provided on the attachment portion 147, and the operation is controlled by the control portion, whereby the closed state maintaining operation can be performed. Further, if the ventilation valve 14 is an electromagnetic valve, the control unit controls the electromagnetic valve to perform the closed state maintaining operation. Further, an additional valve such as a normally open valve or a solenoid valve is provided in the connection drainage pipe between the ventilation valve 14 and the drainage pipe, and the control valve is controlled so as to be in a closed state. A state maintaining operation can be performed.

  The siphon force detection unit may be, for example, a pressure sensor capable of detecting a negative pressure, or a flow rate sensor capable of detecting a flow rate of drainage in a pipe. Further, the siphon force detection unit can be arranged, for example, on the downstream side of the storage unit 131 of the trap 13.

In the second aspect of the present embodiment, the siphon force detection unit detects the siphon force and performs a closed state maintaining operation, and after a predetermined time has elapsed, the control unit automatically releases the maintenance of the closed state of the ventilation valve 14. can do. By doing so, the trap 13 can be prevented from being opened.
Further, in the second aspect of the present embodiment, the siphon drainage system 10 has a drainage detector that detects that drainage is not being performed, and the drainage detector detects that drainage is not being performed. By doing so, the maintenance of the closed state of the ventilation valve 14 can be released. By doing so, the vent valve 14 is opened before water breakage (rupture) occurs, and it is possible to prevent water breakage (breakage) from occurring or to prevent water breakage (breakage). Even if (sealing) occurs, the sealing water can be filled with the water remaining in the plumbing device 11 (the sealed state is maintained). In addition, as the drainage detecting unit, for example, a sensor that detects the end of use of the water supply (for example, stop of water supply from the water tap) in the plumbing device 11 or a receiving unit that can receive a signal of the end of use is provided. Things. In addition, as the drainage detecting unit, for example, if the disposer 20 is provided in the plumbing device 11 as in the example of FIG. 1, a sensor for detecting the end of use of the disposer 22 or a signal of end of use is received. A possible receiver may be provided. Furthermore, if the disposer 20 has a water supply function capable of supplying water internally in conjunction with its use, the drainage detection unit may be a sensor for detecting a water supply stop of the water supply function of the disposer 22 or a water supply stop. May be provided.

  In the siphon drainage system 10 according to the first and second aspects of the present embodiment, the sealed water is supplied to the storage portion 131 of the trap 13 in conjunction with the release of the closed state of the ventilation valve 14. Water-filling mechanism. In this way, even if the trap 13 is broken due to the maintenance of the closed state of the ventilation valve 14, water is supplied from the water sealing and filling mechanism in conjunction with the release of the maintenance of the closed state of the ventilation valve 14. Therefore, the sealing of the trap 13 can be restored (the sealing state can be set). Note that the amount of water sealed supplied by the water sealing and filling mechanism is larger than the minimum volume of water to be in the sealed state in the storage part 131 of the trap 13, and more preferably the storage part 131 of the trap 13. Is preferably larger than the maximum volume of water for bringing into a sealed state. Thereby, the trap 13 can be more reliably brought into the sealed state.

In the present embodiment, as the water sealing and filling mechanism, it is possible to receive a signal indicating that the maintenance of the closed state of the ventilation valve 14 has been released and automatically supply water from a water system that can be used for the plumbing device 11. it can. Specifically, water is guided by a pipe branched from the water system and connected to, for example, a drain pipe near the drainage port of the plumbing device 11 or a drain pipe upstream of the storage unit 131 of the trap 13. When a signal indicating that the maintenance of the closed state of the ventilation valve 14 has been released is received, the signal is automatically placed near the drain port of the plumbing device 11 or in the drain pipe upstream of the storage part 131 of the trap 13. A mechanism for supplying a predetermined amount of water as sealing water can be provided. Further, since the plumbing device 11 illustrated in FIG. 1 has the disposer 20, the water sealing and filling mechanism can be a mechanism in which a predetermined amount of water is supplied as water sealing after using the disposer 20. By providing the siphon drainage system 10 with a release transmitting unit that transmits a signal when the maintenance of the closed state of the ventilation valve 14 is released, the water sealing and filling mechanism releases the maintenance of the closed state of the ventilation valve 14. In conjunction with this, the sealed water can be supplied to the storage section 131 of the trap 13.
In addition, as the water sealing and filling mechanism, for example, in the second aspect of the present embodiment, the drainage by the drainage detection unit is not synchronized with the release of the maintenance of the closed state of the ventilation valve 14. In conjunction with the detection of the non-operation, the water is automatically supplied from a water system that can be used for the plumbing device 11, or a predetermined amount of water is supplied as a seal after using the disposer 20. You can also.

Further, as the water sealing and filling mechanism, a mechanism according to the following modified example can be used instead of the above-described one.
That is, as shown in FIG. 3, the water sealing and filling mechanism 30 according to the present modified example has an opening 311 through which a part of the drainage can flow, and a holding part 31 that can temporarily hold the drainage, And a discharge path 32 for discharging the waste water held by the holding section 31. In this way, in the holding unit 31, for example, part of the drainage when the plumbing device 11 is used flows through the opening 311 of the holding unit 31 and temporarily holds the drainage (in the holding unit 31). Even if the trap 13 runs out of water, the waste water held by the holding unit 31 may be supplied to the storage unit 131 of the trap 13 via the discharge path 32 to fill the trap. It becomes possible. In addition, in this modification, as shown in FIG. 3, the plumbing device 11 has the disposer 20, but the plumbing device 11 may have no disposer.

  When the holding portion 31 and the discharge path 32 are provided as shown in FIG. 3 as the water sealing and filling mechanism 30, as shown in the example of FIG. It can be formed by the side surface and the tubular portion 111 provided on the inner side surface of the plumbing device 11. Since the plumbing device 11 is provided with the tubular portion 111 in this manner, the plumbing device is opened through the opening 311 of the holding portion 31 formed by the upper end portion of the tubular portion 111 and the inner surface of the plumbing device 11. A part of the drainage when using 11 flows into the holding unit 31, and the holding unit 31 temporarily holds the drainage. By forming the holding portion 31 in this manner, the holding portion 31 can easily make it easier to temporarily hold the drainage without obstructing the flow of the drainage to the drain port.

  In the example of FIG. 3, the tubular portion 111 is detachably provided on the drain port at the bottom of the water supply device 11 from the viewpoint of more easily providing the water sealing and filling mechanism 30. Further, the cylindrical portion 111 can be made of, for example, a resin, and the inner diameter thereof is substantially the same as that of the first drain pipe 12. The inner diameter and the outer diameter of the cylindrical portion 111 are the same as those of the cylindrical portion 111. Are substantially constant in the axial direction. The cylindrical portion 111 has a circular cross section (a cylindrical shape as a whole) in the illustrated example, but may have an arbitrary shape.

As shown in the example of FIG. 3, the drainage port of the plumbing device 11 has a cutout having an inner diameter that is the same as or slightly larger than the outer diameter of a portion attached to the drainage port of the tubular portion 111. Thereby, the cylindrical portion 111 and the drain port can be fitted. Further, in order to perform the fitting more securely, for example, a rubber packing can be attached to a portion where the tubular portion 111 is attached to the drain port.
In the example of FIG. 3, the tubular portion 111 is detachable as described above. For example, the plumbing device 11 and the tubular portion 111 may be integrated, or the plumbing device 11 may be disposable. In the case where the drain pipe 23 is not provided, the drain pipe 23 and the tubular portion 111 can be integrated by penetrating the drain pipe 23 through the drain port of the plumbing device 11.

In this modification, as shown in FIGS. 3 and 4, the discharge path 32 is a through hole 33 formed below the side surface of the tubular portion 111. Therefore, the water sealing and filling mechanism 30 can be provided more effectively. In addition, “below” the side surface of the cylindrical portion 111 means a lower portion in a state where the cylindrical portion 111 is attached to the plumbing device 11, and the lower portion of the side surface of the cylindrical portion 111 is a through hole 33. It is a portion of the side surface of the cylindrical portion 111 near the drain port of the plumbing device 11.
In addition, in the illustrated example, as shown in FIG. 4, the discharge path 32 includes a row of a plurality of circular through holes 33 (three in the figure) arranged in the axial direction of the cylindrical portion 111. It is formed by providing it around. However, the discharge path 32 is not limited to the shape and number in the example shown in the figure, and furthermore, is not limited to, for example, a slit (a rectangle extending in the circumferential direction or the axial direction) formed below the side surface of the cylindrical portion 111 or a cylindrical shape. The mesh may be formed arbitrarily, such as a mesh formed on a part (for example, below the side surface) or all of the part 111.

  In the present embodiment, as shown in FIG. 3, the volume (maximum volume) of the drainage that can be temporarily held by the holding unit 31 is a minimum amount of water for bringing the storage unit 131 of the trap 13 into a sealed state. It is larger than the volume. This makes it possible to reliably recover the water sealing even when the water sealing is exhausted. The minimum volume of water to be sealed in the storage section 131 of the trap 13 can vary depending on the size of the pipes used, and therefore, the volume of drainage that can be temporarily held by the holding section 31 also changes. I can do it. In the present embodiment, the volume of the drainage that can be temporarily held by the holding unit 31 is the maximum volume of the water to be sealed in the storage unit 131 of the trap 13 from the viewpoint of ensuring more reliable water sealing. More preferably, it is larger.

  In the example shown in FIG. 3, the plumbing device 11 has a wall surface 112 and a gentle inclined portion 113 slightly inclined from the horizontal direction so that the drainage flows toward the drainage port in the cross-sectional view of FIG. 3. Further, a concave portion 114 having a shape depressed downward from the gentle inclined portion 113 is provided. Since the plumbing device 11 has the concave portion 114, the drainage can be easily held by the holding portion 31.

  In the example illustrated in FIG. 3, the opening 311 of the holding unit 31 and the opening of the cylindrical unit 111 are not covered, and, for example, a lid for removing dust in drainage is not provided. In order to reduce the inflow of dust into the base 31, a lid having a mesh shape or a grid shape can be arranged.

When the water sealing and filling mechanism 30 includes the holding section 31 and the discharge path 32, the area of the opening of the discharge path 32 (when there are a plurality of discharge paths 32 as shown in FIG. The total area of the openings of the passage 32 is preferably 4 to 50 mm ^2, and more preferably, the total area of the openings of the discharge passage 32 is 9 to 18 mm ² . By setting the entire area of the opening of the discharge passage 32 to 4 mm ² or more, the drainage held by the holding portion 31 can be effectively discharged from the discharge passage 32, and all of the opening of the discharge passage 32 By setting the area to 50 mm ² or less, when the siphon force in the trap 13 is removed, the holding portion 31 can effectively hold drainage. The “area of the opening of the discharge path” refers to the area of the opening that opens to the outside of the opening inside and outside of the holding portion 31 of the discharge path 32.

  Here, as a first example in which the discharge path 32 of the modification illustrated in FIGS. 3 and 4 is modified, the discharge path 32 is formed below the side surface of the cylindrical portion 111 as shown in FIG. The through hole 33 and the tubular body 34 extending from the through hole 33 can be formed. Specifically, the number of discharge paths 32 in the discharge path 32 illustrated in FIG. 5 is smaller than the number of discharge paths 32 illustrated in FIG. Further, in the discharge path 32 illustrated in FIG. 5, the opening area per discharge path 32 (through hole 33) is relatively larger than that of the discharge path 32 (through hole 33) in FIG. Further, the discharge path 32 illustrated in FIG. 5 has a tubular body 34 extending from the through-hole 33, and the tubular body 34 is arranged around the cylindrical portion 111 along the bottom surface of the holding portion 31. . In the example illustrated in FIG. 5, drainage of the holding unit 31 is performed by drainage flowing into the opening at the end of the tubular body 34 and discharging from the through-hole 33 of the tubular part 111. By forming the discharge path 32 with the through hole 33 and the tubular body 34, the tubular body 34 can also serve as a holding unit. In the example of FIG. 5, the discharge of the drainage to the outside of the holding unit 31 is performed by the drainage flowing in from the axial end of the tubular body 34. One or a plurality of openings may be provided at an arbitrary location other than the end portion (for example, in the middle of the tubular body 34) on the vertically upper side wall of the tubular body 34 to further facilitate drainage. .

  Further, as a second example in which the discharge path 32 of the modified example illustrated in FIGS. 3 and 4 is modified, although not shown, for example, the surface of the bottom of the water supply device 11 in which the holding unit 31 is formed. A groove extending toward the drain port and opening to the drain port is formed, and the cylindrical portion (which may or may not have a through hole) is formed so as to cover the groove (the inside of the groove is formed). The drainage channel 32 can be formed as a groove on the bottom surface of the plumbing device 11 by being provided on the bottom surface of the plumbing device 11 so as not to be blocked. Alternatively, the bottom part of the plumbing device 11 that forms the holding part 31 and the first drain pipe 12 may be a communication part that communicates with, for example, a tubular body.

  In addition, as a third example in which the water sealing and filling mechanism 30 of the modification illustrated in FIGS. 3 and 4 is modified, the holding unit 31 and the discharge path 32 illustrated in FIGS. As shown. Specifically, as shown in FIG. 6, by providing the holding portion 31 with the partial cylindrical portion 115 cut in the axial direction on the inner surface of the plumbing device 11, the inner surface of the plumbing device 11 and the partial cylinder 115 are provided. In addition, the discharge passage 32 can be a through hole formed below the side surface of the partial cylindrical portion 115.

Next, an example of a method for cleaning the siphon drainage system according to the present embodiment will be described.
The cleaning method of the siphon drainage system according to the present embodiment includes, as the siphon drainage system, the trap 13 including the storage unit 131 capable of storing drainage, such as the siphon drainage system 10 described above, and the downstream side of the storage unit 131. The siphon drainage system having a normally closed ventilation valve 14 and a siphon drainage pipe 24 provided downstream of the ventilation valve 14 can be cleaned, and the cleaning method includes: There is a step of maintaining the closed state of the ventilation valve 14 (hereinafter, also referred to as a maintenance step). By having this step, the generated siphon force reaches the upstream of the storage section 131 of the trap 13 through the water sealing in the trap 13, and the suction force of the siphon force causes the water supply device 11 Can be forcedly discharged to clean the piping.

  In the present embodiment, in the maintaining step, the closed state of the ventilation valve 14 can be maintained by a user operation. In addition, when the siphon drainage system 10 has a siphon force detection unit that detects that siphon force has been generated in the siphon drain pipe 24, the maintenance of the closed state of the ventilation valve 14 is received by the detection by the siphon force detection unit. Alternatively, it may be operated by a control unit that operates so that the closed state of the ventilation valve 14 is maintained based on the signal.

  After the above-described maintenance step, a step may be provided in which the maintenance of the closed state of the ventilation valve 14 is automatically released after a predetermined time has elapsed after the closed state of the ventilation valve 14 has been maintained. By doing so, the trap 13 can be prevented from being opened.

  Further, in the present embodiment, when the siphon drainage system 10 has a siphon force detection unit that detects that siphon force has been generated in the siphon drain pipe 24, it is determined that the siphon drainage system 10 is not draining. It may have a drainage detecting section for detecting, and after the maintaining step, the drainage detecting section may detect that drainage is not being performed and release the maintenance of the closed state of the ventilation valve 14. . Thereby, the trap 13 can be prevented from being opened.

  Further, in the present embodiment, the siphon drainage system 10 has a water-sealing filling mechanism that supplies water to the storage part 131 of the trap 13 in conjunction with the release of the maintenance of the closed state of the ventilation valve 14, Then, after the maintenance step, the maintenance of the closed state of the ventilation valve 14 is released, so that the water sealing and filling mechanism can have a step of supplying the sealing water to the storage part 131 of the trap 13. Thus, even if the trap 13 is broken, the water sealing can be recovered.

  As described above, the embodiment of the present invention has been described with reference to the drawings. However, the siphon drainage system of the present invention is not limited to the above example, and can be appropriately modified. In the description of an example of the method for cleaning the siphon drainage system according to the present embodiment, the siphon drainage system 10 described above is used as the siphon drainage system. However, the method for cleaning the siphon drainage system according to the present embodiment is used. The siphon drainage system is not limited to the siphon drainage system 10 and can be modified as appropriate.

  ADVANTAGE OF THE INVENTION According to this invention, the siphon drainage system which can wash the inside of the piping upstream from the storage part of a trap, and its washing | cleaning method can be provided.

10: siphon drainage system, 11: plumbing equipment, 111: cylindrical part, 112: wall surface, 113: gentle slope part, 114: concave part, 115: partial cylindrical part, 12: first drainage pipe, 13: trap, 131: storage section, 14: vent valve, 141: movable plate, 142: fixed section, 143: valve cylinder section, 144: rubber seal section, 145: valve dome section, 146: opening section, 147: mounting section, 15: straight Pipe, 16: horizontal drawing pipe, 17: vertical pipe, 18: merging joint, 19: merging pipe, 20: disposer, 21: floor panel of house, 22: floor slab, 23: hole for piping, 24: siphon drain pipe , 25: connecting pipe, 30: sealing and filling mechanism, 31: holding section, 311: opening (of the holding section), 32: discharge path

Claims (6)

A trap having a storage portion in which drainage can be stored, a ventilation valve provided downstream of the storage portion, and a siphon drain pipe provided downstream of the ventilation valve,
The siphon drainage system, wherein the vent valve can arbitrarily open and close the vent valve.   The siphon drainage system according to claim 1, wherein the vent valve is a normally-closed valve, and a user can arbitrarily operate the vent valve to maintain the closed state. The siphon drainage system has a siphon force detection unit that detects that siphon force has occurred in the siphon drain pipe,
The vent valve is a normally closed valve,
2. The siphon drainage system according to claim 1, wherein the siphon force detection unit operates so that the closed state of the ventilation valve is maintained by detecting generation of siphon force. 3. The siphon drainage system has a drainage detection unit that detects that drainage is not being performed,
4. The siphon drainage system according to claim 3, wherein the drainage detector detects that drainage is not being performed, whereby the maintenance of the closed state of the ventilation valve is released. 5.   5. A water-sealing filling mechanism, which supplies water to the storage part of the trap in conjunction with the release of the closed state of the vent valve being released, according to any one of claims 2 to 4, The described siphon drainage system. Cleaning of a siphon drainage system including a trap having a storage part in which drainage can be stored, a normally closed vent valve provided downstream of the storage part, and a siphon drain pipe provided downstream of the vent valve. The method
A method for cleaning a siphon drainage system, comprising: maintaining a closed state of the ventilation valve during generation of a siphon force.

Images