TWI729524B - Overflow restraint and drainage pipe structure - Google Patents

Abstract

The subject of the present invention is to provide an overflow suppression device that can suppress the overflow of water from the drain pipe, and a drain pipe structure that can suppress the overflow of water from the drain pipe.

The overflow suppression device has a cylindrical peripheral wall that can be connected to the drain pipe, and a shielding portion that shields the interior of the peripheral wall along the circumferential direction of the peripheral wall.

Description

Overflow restraint and drainage pipe structure

The invention relates to an overflow restraint device and a drainage pipe structure.

The conventional drainage pipe is constructed with a siphon drainage system in which a vent valve is screwed to the vent of the drainage trap (see, for example, Patent Document 1). The vent valve system has a check valve. Therefore, according to the siphon drainage system described in Patent Document 1, when a negative pressure is generated inside the drainage pipe, the check valve is opened to allow air to flow into the drainage pipe. This prevents excessive negative pressure from being generated in the drain pipe. On the other hand, when a positive pressure is generated inside the drain pipe, by closing the check valve, it is possible to prevent air or drainage from flowing out of the drain pipe to the outside.

[Prior Technical Literature]

[Patent Literature]

Patent Document 1: Japanese Patent Application Publication No. 2015-98702

However, even with the conventional drainage pipe structure as described above, when a large amount of drainage flows to the drainage pipe, the drainage may still overflow through the vent valve.

The object of the present invention is to provide an overflow suppression device that can inhibit water from overflowing from a drainage pipe, and a drainage pipe structure that can inhibit water from overflowing from the drainage pipe.

The overflow suppression device related to the present invention has a cylindrical peripheral wall that can be connected to a drain pipe, and a shielding portion that shields the interior of the peripheral wall along the circumferential direction of the peripheral wall. According to the overflow restraint device related to the present invention, it is possible to restrain water overflow from the drain pipe.

In the overflow restraint device related to the present invention, preferably, the shielding portion is an annular shielding portion that shields the interior of the peripheral wall in a ring shape; it has: other shielding portions that are spaced apart on the upper side of the interior of the peripheral wall to shield the shielding portion The opening formed on the inner peripheral side of the shielding portion; and the fixing piece is attached to the By forming other openings around the other shielding part, the other shielding part is fixed to the peripheral wall. In this case, the overflow of water from the drain pipe can be suppressed even more.

In the overflow restraint device related to the present invention, preferably, when the overflow restraint device is viewed from the extending direction of the central axis of the overflow restraint device, the internal structure of the peripheral wall is a symmetrical structure centered on the axis. In this case, it becomes an overflow suppression device that can be connected with a simple operation.

In the overflow restraint device related to the present invention, it is preferable that the shielding portion has a curved portion toward the lower side as it goes toward the central axis of the overflow restraint device. In this case, the overflow of water from the drain pipe can be suppressed even more.

In the overflow restraint device related to the present invention, it is preferable that the other shielding portion has a curved portion that protrudes from the upper side as it goes toward the central axis of the overflow restraint device. In this case, the overflow of water from the drain pipe can be suppressed even more.

In the overflow suppression device related to the present invention, preferably, a total of three or more of the shielding portion and the other shielding portion are alternately and repeatedly arranged from the lower side to the upper side. In this case, the overflow of water from the drain pipe can be suppressed even more.

The drainage pipe structure related to the present invention has: a drainage pipe; a vent valve; a cylindrical peripheral wall arranged between the drainage pipe and the vent valve; a shielding portion that shields the interior of the peripheral wall along the circumferential direction of the peripheral wall; others The shielding part is to shield the opening formed by the shielding part at intervals on the upper side of the inner peripheral wall; and the fixing piece is to form other openings around the other shielding part to form the other shielding part Fixed on the peripheral wall. According to the drainage pipe structure related to the present invention, it becomes a drainage pipe structure that can prevent water from overflowing from the drainage pipe.

According to the present invention, it is possible to provide an overflow suppression device capable of suppressing water overflow from a drain pipe, and a drain pipe structure capable of suppressing water overflow from the drain pipe.

1A: Spill suppression device (1st implementation type)

1B: Spill suppression device (2nd implementation type)

10: Zhou wall

11: Lower end

12: Upper end

20: Shading part

20a: Ring part

20b: Curved shape part

20c: cylindrical part

30: Intermediate shielding part (other shielding parts)

30a: cylinder

30b: Curved shape part

31: fixed piece

40: Shading part

40a: Ring part

40b: Curved shape part

40c: cylindrical part

A: Drainage pipe structure

A2: The opening of the shielding part

A3: Openings around the middle shielding part (other openings)

A4: The opening of the shielding part

100: Siphon drainage system

110: water appliance

120: connecting pipe

130: catcher

131: The first descending part

132: First Turnback

132a: Storage section

133: Ascendant

134: Second Turnback

135: The second descending part

140: Vent valve

150: straight pipe

160: horizontal tube

170: Standpipe

180: Confluence connector

190: Riser

200: siphon drain

Fig. 1 is a system diagram schematically showing a siphon drainage system to which the overflow suppression device related to the first embodiment of the present invention can be applied.

Fig. 2 is a side view showing the overflow suppression device related to the first embodiment of the present invention.

Fig. 3 is a bottom view showing the overflow suppression device of Fig. 2.

Fig. 4 is a top view showing the overflow suppression device of Fig. 2.

Fig. 5 is a cross-sectional view of A-A in Fig. 2.

Fig. 6 is a cross-sectional view corresponding to the A-A section of Fig. 2 showing the peripheral wall constituting the overflow suppression device of Fig. 2.

Fig. 7 is a bottom view showing the peripheral wall of Fig. 6;

Fig. 8 is a top view showing the peripheral wall of Fig. 6.

Fig. 9 is a side perspective view showing the overflow suppression device related to the second embodiment of the present invention.

Fig. 10 is a cross-sectional perspective view of the overflow suppression device of Fig. 9 corresponding to the A-A section of Fig. 2.

Hereinafter, referring to the drawings, the overflow suppression device and the drainage pipe structure related to an embodiment of the present invention will be described. In addition, in the following description, "upstream" and "downstream" mean to define the flow of fluids such as drainage and air, and "upper" and "lower" mean to define height. In addition, the "circumferential direction" means the direction around the central axis O1 of the overflow suppression device.

In FIG. 1, symbol 100 is a siphon drainage system to which the vent valve connector 1A related to the first embodiment of the present invention can be applied. The siphon drainage system 100 illustrated in FIG. 1 is composed of a water appliance 110, a connecting pipe 120, a trap 130, a vent valve 140, a straight pipe 150, a horizontal pipe 160, a vertical pipe 170, and a stand pipe connected through a junction joint 180 190 constituted. In the siphon drainage system 100 in FIG. 1, the drainage pipe system is composed of a connecting pipe 120, a trap 130, a straight pipe 150, a horizontal pipe 160, and a vertical pipe 170. The water appliance 110 in the example shown in FIG. 1 is a kitchen countertop. In addition, a processor 111 is provided at the drain port of the water appliance 110. In addition, as long as the water appliance 110 is capable of draining water, the type is not particularly limited. The usable water appliance 110 is a bathtub, a bathroom, a toilet, etc. that are provided in a bathroom such as a dishwasher, a sink, a washing machine, and a system bathroom.

Specifically, in the residence, the water appliance 110 is arranged on the floor 210. In this example, the water-using appliance 110 is connected to the trap 130 through the connecting pipe 120. In this example, the trap 130 is an S-shaped drain trap. The trap 130 has a first descending portion 131 in which the flow path descends from the upstream side to the downstream side, a first turning portion 132 in which the flow path is turned back upward from the upstream side to the downstream side, and the flow path from the upstream side to The ascending part 133 that rises on the downstream side, the second turning part 134 that the flow path turns back downward from the upstream side to the downstream side, and the second downturn that the flow channel descends from the upstream side to the downstream side 部135. In this example, the first descending portion 131, the first turning-back portion 132, the rising portion 133, the second turning-back portion 134, and the second falling portion 135 are integrally formed. Moreover, in this example, the second descending portion 135 and the straight pipe 150 are integrally formed.

In the straight pipe 150, the flow path descends from the upstream side to the downstream side, and the drainage is guided below the floor 210 to the vicinity of the floor 220. The transverse pipe 160 is connected to the downstream side of the straight pipe 150 and extends in the horizontal direction. In addition, the horizontal pipe 160 is composed of a pipe that is thinner than the pipe used in the conventional inclined drainage, and is set to be slightly horizontal (not slightly inclined). The vertical pipe 170 is connected to the downstream side of the transverse pipe 160, and the flow path descends from the upstream side to the downstream side. Also, in this example, the vertical pipe 170 penetrates the piping hole 230 of the floor 220. Further, in this example, the vertical pipe 170 is connected to the downstream side of the vertical pipe 190 through a junction 180.

The riser 190 is a pipe body with a larger diameter than the horizontal pipe 160 and the riser 170, and is installed up and down through the building. Although the riser 190 is connected to the drainage channel from the water appliance 110, it is also connected to the drainage channel from other water appliances (not shown in the figure), and is connected to the purification tank (not shown in the figure) on the downstream side. Phase connection.

The siphon drainage system 100 of FIG. 1 has a drainage pipe structure A and a siphon drainage pipe 200 related to this embodiment described later. The siphon drain pipe 200 is a pipe provided at least on the downstream side of the storage portion 132 a of the first turning portion 132 of the trap 130. In the example of FIG. 1, the siphon drainage pipe 200 is composed of a connecting pipe 120, a trap 130, a straight pipe 150, a horizontal pipe 160 and a vertical pipe 170. In the above-mentioned siphon drainage system 100, the drainage can flow out from the horizontal pipe 160 to the vertical pipe 170 in a state of being full of water, so that the drainage can flow downward, thereby generating a siphon force. It will be attracted by the generated siphon force to drain the horizontal pipe 160.

As shown in FIG. 1, in this example, in the trap 130, the first turning portion 132 forms a trap having a storage portion 132a capable of storing drainage. In the S-shaped drain trap like the trap 130, normally, the sealing water is fully accumulated in the storage portion 132a of the first turn-back portion 132. That is, in the storage portion 132a of the first turning portion 132, the upstream and downstream spaces (flow passages) are blocked by the sealing water. Thereby, for example, it is possible to prevent the intrusion of odor, pests, etc. from the downstream side of the trap 130.

In addition, in the siphon drainage system 100 in FIG. 1, the vent valve 140 is a check valve, which is provided on the downstream side of the storage portion 132 a of the trap 130. In this example, the vent valve 140 passes through the The vent valve connector 1A related to the implementation type is connected to the upper part of the second turn-back portion 134. Therefore, in the siphon drainage system 100 of FIG. 1, when a siphon force (negative pressure) is generated inside the siphon drainage pipe 200, the vent valve 140 is opened to allow air to enter the trap 130 through the vent valve 140 . Thereby, even if a large negative pressure is generated inside the siphon drain pipe 200, air can still be sucked in from the vent valve 140, so there is no sealing water in the storage portion 132a of the first turning portion 132 toward the downstream side (this The position is the ascending part 133 side) is attracted. Therefore, if the vent valve 140 is provided, it is possible to prevent the occurrence of sealing water damage (breaking) (the sealing water state can be maintained). On the other hand, when the siphon drain pipe 200 and even the vent valve 140 are not at a negative pressure, the vent valve 140 is not ventilated, so that air or drain water can be prevented from flowing out of the siphon drain pipe 200 to the outside.

However, even if a vent valve 140 is provided in the siphon drain pipe 200 in this way, when the vent valve 140 is directly connected to the upper part of the trap 130, if a large amount of drain water flows through, there will still be the drain valve. In the case of the vent valve 140. Especially when the water potential of the drain is great, the drain may overflow from the vent valve 140.

Therefore, in the siphon drainage system 100 of FIG. 1, the siphon drainage pipe 200 and the vent valve 140 are connected through the overflow suppression device 1A related to this embodiment.

Fig. 2 is a side view of the overflow suppression device 1A related to the embodiment. In addition, Fig. 3 is a bottom view of the overflow suppression device 1A. Furthermore, FIG. 4 is a top view of the overflow suppression device 1A. As shown in Figures 2 to 4, the overflow suppression device 1A related to this embodiment is a cylindrical connecting device. In the figure, the symbol O1 is the central axis of the overflow suppression device 1A.

Furthermore, FIG. 5 is a cross-sectional view of the overflow suppression device 1A. As shown in FIG. 5, the overflow suppression tool 1A has a cylindrical peripheral wall 10 that can be connected to a drain pipe. The overflow suppression device 1A related to this embodiment has a cylindrical peripheral wall 10 having an end 11 that can be connected to the lower part of the trap 130 and an end 12 that can be connected to the upper part of the vent valve 140. The peripheral wall 10 is preferably cylindrical like this embodiment. However, as long as the peripheral wall 10 is a hollow wall, the cross-sectional shape is not limited to a circular shape (annular shape), and various cross-sectional shapes such as a polygonal shape may be used.

As shown in FIG. 5, in the overflow suppression tool 1A related to the present embodiment, the lower end portion 11 has a "female thread" formed as a part of the inner peripheral surface of the peripheral wall 10. In addition, in this embodiment, the upper end portion 12 has a “male screw” formed as a part of the outer peripheral surface of the peripheral wall 10. In detail, the peripheral wall 10 has a large-diameter portion 10a and a small-diameter portion 10b connected to the large-diameter portion 10a. In this embodiment, the lower end portion 11 is formed as a part of the large diameter portion 10a of the peripheral wall 10. Furthermore, in this embodiment, the upper end portion 12 is formed as a part of the small diameter portion 10b of the peripheral wall 10. In this embodiment, the central axis O10 of the peripheral wall 10 is arranged coaxially with the central axis O1 of the vent valve connector 1A.

Furthermore, the overflow suppression tool 1A has a shielding portion 20 that shields the inside of the peripheral wall 10 along the circumferential direction of the peripheral wall 10. The shielding portion 20 is located on the side of the lower end portion 11 inside the peripheral wall 10. In the overflow suppression tool 1A related to this embodiment, the shielding portion 20 shields the inside of the peripheral wall 10 in a ring shape.

In the overflow suppression device 1A related to this embodiment, the ring-shaped shielding portion (hereinafter also referred to as "ring-shaped shielding portion") 20 prevents the overflow suppression device 1A from being collected when the overflow suppression device 1A is connected to the trap 130. Drain of the device 130 is introduced into the inside of the peripheral wall 10, and has a function as a shielding part. When the opening A2 formed by the shielding portion 20 connects the overflow suppression device 1A to the trap 130, it discharges the air from the trap 130 and functions as a passage.

In the overflow suppression tool 1A related to this embodiment, the shielding portion 20 is configured as a separate component from the peripheral wall 10. In this embodiment, the shielding portion 20 is fixed to the inner peripheral surface of the large-diameter portion 10a of the peripheral wall 10. In addition, in this embodiment, the central axis O20 of the shielding portion 20 is also arranged on the coaxial line with the central axis O1 of the overflow suppression device 1A. In this embodiment, as shown in FIG. 3, when viewed from the extending direction of the central axis O1 of the peripheral wall 10, that is, viewed from the axial direction, the shape of the outer edge 20e1 of the shielding portion 20 is a circular shape. In this embodiment, the shape of the outer edge 20e1 of the shielding portion 20 is a circle with a radius R2a centered on the central axis O1 of the overflow restraint device 1A. In addition, the opening A2 is a circle with a radius R2b centered on the central axis O1 of the overflow restraint device 1A.

In the overflow restraint device 1A related to this embodiment, as shown in FIG. 5, the shielding portion 20 has a curved portion that faces the lower side as it goes toward the central axis O1 of the overflow restraint device 1A.

In the overflow restraint device 1A related to this embodiment, as shown in FIG. 5, a plane including the central axis O1 of the overflow restraint device 1A is taken as a section. When viewed from the vertical direction of the section, that is, Viewed in a cross section perpendicular to the axial direction, the shielding portion 20 has an annular portion 20a, a cylindrical curved portion 20b connected to the opening edge of the annular portion 20a, and a cylindrical curved portion 20b connected to the opening edge of the curved portion 20b状部20c.

In the overflow suppression tool 1A related to this embodiment, as shown in FIG. 5, viewed from a cross section perpendicular to the axial direction, the lower side shielding surface 20f1 of the shielding portion 20 is formed by the lower side shielding surface of the annular portion 20a 20f1a, the lower side shielding surface 20f1b of the curved portion 20b, and the lower side (outer peripheral side) shielding surface 20f1c of the cylindrical portion 20c are formed. In this embodiment, as shown in FIG. 5, viewed from a cross-section perpendicular to the axial direction, the cross-sectional shape of the shielding surface 20f1a on the lower side of the annular portion 20a extends in the direction of the air (drain) flow (this embodiment) The middle is a straight line that is perpendicular to the direction (radial direction) of the extension direction of the central axis O1 of the overflow suppression device 1A. Moreover, in this embodiment, as shown in FIG. 5, when viewed from a cross-section perpendicular to the axial direction, the cross-sectional shape of the lower side shielding surface 20f1b of the curved portion 20b is a curve with a radius R20a centered on the center point P20. Moreover, in this embodiment, as shown in FIG. 5, when viewed from a cross section perpendicular to the axial direction, the cross-sectional shape of the lower side shielding surface 20f1c of the cylindrical portion 20c is a straight line extending in the air flow direction. In this embodiment, the center point P20 is shown in FIG. 5, viewed from a cross-section perpendicular to the axial direction, and is the (radial) straight line of the shielding surface 20f1a on the lower side of the annular portion 20a and the lower portion of the cylindrical portion 20c. The (axial) straight lines of the side shielding surface 20f1c will meet to draw the center point position of the circle when the circle is drawn.

In addition, in the overflow suppression tool 1A related to this embodiment, as shown in FIG. 5, viewed from a cross section perpendicular to the axial direction, the upper side shielding surface 20f2 of the shielding portion 20 is formed by the upper side shielding surface of the ring portion 20a. 20f2a, the upper side shielding surface 20f2b of the curved portion 20b, and the upper side (inner peripheral side) shielding surface 20f2c of the cylindrical portion 20c are formed. In this embodiment, as shown in FIG. 5, viewed from a cross-section perpendicular to the axial direction, the cross-sectional shape of the upper side shielding surface 20f2a of the annular portion 20a is a straight line extending in a direction orthogonal to the air flow direction. Furthermore, in this embodiment, as shown in FIG. 5, when viewed from a cross-section perpendicular to the axial direction, the cross-sectional shape of the upper side shielding surface 20f2b of the curved portion 20b is a curve with a radius R20b centered on the center point P20. Moreover, in this embodiment, as shown in FIG. 5, when viewed from a cross-section perpendicular to the axial direction, the cross-sectional shape of the upper shielding surface 20f2c of the cylindrical portion 20c is a straight line extending in the air flow direction. In addition, the shielding portion 20 may be constituted by only the curved portion 20b.

In particular, in the overflow suppression tool 1A related to this embodiment, the shielding portion 20 has a ring-shaped convex portion 20d. In the present embodiment, the annular convex portion 20d rises annularly from the annular portion 20a around the central axis O1 of the overflow suppression device 1A. In this embodiment, the shielding portion 20 can be fixed to the peripheral wall 10 by, for example, being pressed into the annular recess 10 n of the peripheral wall 10. Alternatively, the shielding portion 20 may not be fixed to the lower side end of the peripheral wall 10 but be sandwiched between the peripheral wall 10 and the trap 130.

In addition, as shown in FIG. 5, in the overflow suppression tool 1A related to the present embodiment, the shielding portion 20 is a ring-shaped shielding portion that shields the inside of the peripheral wall 10 in a ring shape. In this embodiment, there is an intermediate shielding portion (other shielding portion) 30 that shields the openings A2 formed on the inner peripheral side of the shielding portion 20 at intervals on the upper side inside the peripheral wall 10. The middle shielding portion 30 is located inside the peripheral wall 10 and higher than the shielding portion 20. In addition, FIG. 7 is a bottom view of the peripheral wall 10. In addition, FIG. 8 is a plan view of the peripheral wall 10. The overflow restraint device 1A related to this embodiment is shown in Figs. 7 and 8. It is formed by forming other openings A3 around the middle shielding portion 30, and has a fixing that fixes the middle shielding portion 30 to the peripheral wall 10.片31.

In the overflow restraint device 1A related to this embodiment, the middle shielding portion 30 is formed integrally with the peripheral wall 10 through a plurality of fixing pieces 31. As shown in FIGS. 7 and 8, in this embodiment, the peripheral wall 10 has four fixing pieces 31 arranged at intervals around the central axis O1 of the overflow restraint device 1A as the fixing pieces 31. Thereby, four openings A3 are formed between the four fixing pieces 31. In this embodiment, the fixing piece 31 is formed as a part of the inner peripheral surface of the small-diameter portion 10b of the peripheral wall 10. Moreover, in this embodiment, the central axis O30 of the intermediate shielding portion 30 is also arranged on the coaxial line with the central axis O1 of the overflow suppression device 1A. In this embodiment, as shown in FIGS. 7 and 8, when viewed from the axial direction, the shape of the outer edge 30e1 of the intermediate shielding portion 30 is a circular shape. As shown in FIG. 8, in this embodiment, the shape of the outer edge 30e1 of the intermediate shielding portion 30 is a circle with a radius R3a centered on the central axis O1 of the overflow restraint device 1A. Moreover, as shown in FIG. 7, the shape of the inner edge 30e2 of the intermediate shielding part 30 is a circle with the radius R3b centered on the central axis O1 of the overflow suppression tool 1A.

In the overflow restraint device 1A related to this embodiment, as shown in FIG. 5, the middle shielding portion 30 has a curved portion that protrudes from the upper side as it faces the central axis O1 of the overflow restraint device 1A.

Fig. 6 is a cross-sectional view showing the peripheral wall 10 corresponding to the A-A cross section of Fig. 2. In the overflow restraint device 1A related to this embodiment, the intermediate shielding portion 30 is shown in FIG. 6, and is taken as a cross section with a plane containing the central axis O1 of the overflow restraint device 1A. When viewed from the vertical direction of the section , That is, viewed from a cross section perpendicular to the axial direction, it is shaped into a dome shape. In this embodiment, the middle shielding portion 30 has a cylindrical portion 30a extending from the lower side to the upper side, and a curved portion 30b connected to the upper end surface of the cylindrical portion 30a.

In the overflow suppression device 1A related to this embodiment, as shown in FIG. 6, viewed from a cross-section perpendicular to the axial direction, the lower side shielding surface 30f1 of the middle shielding portion 30 is formed from the lower side (inner periphery) of the cylindrical portion 30a. Side) The shielding surface 30f1a and the lower side shielding surface 30f1b of the curved portion 30b are formed. In this embodiment, the cylindrical portion 30a extends from the upper end surface 31f of the fixing piece 31 by a length L30 in the extending direction of the central axis O1 of the overflow restraint device 1A. In this embodiment, as shown in FIG. 6, viewed from a cross-section perpendicular to the axial direction, the cross-sectional shape of the shielding surface 30f1a of the lower part of the cylindrical portion 30a is a straight line extending in the air flow direction. Also, in this embodiment, as shown in FIG. 6, viewed from a cross-section perpendicular to the axial direction, the cross-sectional shape of the lower side shielding surface 30f1b of the curved portion 30b is a semicircle with a radius R30a centered on the center point P30.形线。 Shaped curve. In this embodiment, the center point P30 is shown in FIG. 6, viewed from a cross-section perpendicular to the axial direction, and is located from the upper end surface 31f of the fixing piece 31 and in the extending direction of the central axis O1 of the overflow suppression device 1A. The upper part is far away from the position of the length L30, and is the position on the central axis O1 of the overflow suppression device 1A. That is, in this embodiment, the center point P30 is shown in FIG. 6, viewed from a cross-section perpendicular to the axial direction, and is located on the cylindrical portion 30a and the curved portion 30b of the overflow suppression device 1A on the central axis O1. Between the location.

In addition, in the overflow suppression tool 1A related to this embodiment, as shown in FIG. 6, when viewed from a cross section perpendicular to the axial direction, the upper side shielding surface 30f2 of the middle shielding portion 30 is formed by the upper side of the cylindrical portion 30a ( Outer peripheral side) the shielding surface 30f2a and the upper shielding surface 30f2b of the curved portion 30b are formed. In this embodiment, as shown in FIG. 6, viewed from a cross-section perpendicular to the axial direction, the cross-sectional shape of the upper side shielding surface 30f2a of the cylindrical portion 30a is a straight line extending in the air flow direction. Also, in this embodiment, as shown in FIG. 6, when viewed from a cross-section perpendicular to the axial direction, the cross-sectional shape of the upper side shielding surface 30f2b of the curved portion 30b is a semicircle with a radius R30b centered on the center point P30.形线。 Shaped curve. In addition, the intermediate shielding portion 30 may be composed of only the curved portion 30b as described later.

Furthermore, in the overflow suppression tool 1A related to this embodiment, a total of three or more shielding parts 20 and intermediate shielding parts 30 can be alternately and repeatedly arranged from the lower side to the upper side.

In the overflow suppression tool 1A related to this embodiment, as shown in FIG. 5, a total of three shielding portions 20 and a middle shielding portion 30 can be alternately and repeatedly arranged from the lower side to the upper side. In this embodiment, there is further a shielding portion 40 that shields the inside of the peripheral wall 10 in a ring shape. The shielding portion 40 is located on the side of the upper end 12 inside the peripheral wall 10. The shielding portion 40 shields the inside of the peripheral wall 10 annularly on the upper end portion 12 side.

In the overflow suppression tool 1A related to this embodiment, the shielding portion 40 is configured as a separate component from the peripheral wall 10. In this embodiment, the shielding portion 40 is fixed to the inner peripheral surface of the small diameter portion 10b of the peripheral wall 10. Moreover, in this embodiment, the central axis O40 of the shielding portion 40 is also arranged on the coaxial line with the central axis O1 of the vent connector 1A. In this embodiment, as shown in FIG. 4, when viewed from the extending direction of the central axis O1 of the peripheral wall 10, that is, viewed from the axial direction, the shape of the outer edge 40e1 of the shielding portion 40 is a circular shape. In this embodiment, the shape of the outer edge 40e1 of the shielding portion 40 is a circle with a radius R4a centered on the central axis O1 of the overflow restraint device 1A. In addition, the opening A4 is a circle with a radius R4b centered on the central axis O1 of the overflow restraint device 1A.

In the overflow restraint device 1A related to this embodiment, as shown in FIG. 5, the shielding portion 40 has a curved portion that faces the lower side as it goes toward the central axis O1 of the overflow restraint device 1A.

In the overflow suppression device 1A related to this embodiment, as shown in FIG. 5, viewed from a cross section perpendicular to the axial direction, the shielding portion 40 is a tube having a ring portion 40a connected to the opening edge of the ring portion 40a The curved portion 40b of the curved shape and the cylindrical portion 40c connected to the opening edge of the curved portion 40b.

In the overflow suppression device 1A related to this embodiment, as shown in FIG. 5, viewed from a cross section perpendicular to the axial direction, the lower side shielding surface 40f1 of the shielding portion 40 is formed by the lower side shielding surface 40f1a of the annular portion 40a, The lower side shielding surface 40f1b of the curved portion 40b and the lower side (outer peripheral side) shielding surface 40f1c of the cylindrical portion 40c are formed. In this embodiment, as shown in FIG. 5, viewed from a cross-section perpendicular to the axial direction, the cross-sectional shape of the shielding surface 40f1a on the lower side of the annular portion 40a is a straight line extending in a direction orthogonal to the air flow direction. Moreover, in this embodiment, as shown in FIG. 5, when viewed from a cross-section perpendicular to the axial direction, the cross-sectional shape of the lower side shielding surface 40f1b of the curved portion 40b is a curve with a radius R40a centered on the center point P40. Moreover, in this embodiment, as shown in FIG. 5, when viewed from a cross-section perpendicular to the axial direction, the cross-sectional shape of the shielding surface 40f1c on the lower side of the cylindrical portion 40c is a straight line extending in the air flow direction. In this embodiment, the center point P40 is shown in FIG. 5, viewed from a cross-section perpendicular to the axial direction, and is the (radial) straight line of the lower side shielding surface 40f1a of the annular portion 40a and the lower portion of the cylindrical portion 40c. The (axial) straight lines of the side shielding surface 40f1c are connected to draw the center point of the circle when the circle is drawn.

In addition, in the overflow suppression tool 1A related to this embodiment, as shown in FIG. 5, viewed from a cross section perpendicular to the axial direction, the upper side shielding surface 40f2 of the shielding portion 40 is shielded by the upper side of the ring portion 40a. The shielding surface 40f2a, the upper side shielding surface 40f2b of the curved portion 40b, and the upper side (inner peripheral side) shielding surface 40f2c of the cylindrical portion 40c are formed. In this embodiment, as shown in FIG. 5, viewed from a cross-section perpendicular to the axial direction, the cross-sectional shape of the upper side shielding surface 40f2a of the annular portion 40a is a straight line extending in a direction orthogonal to the air flow direction. Moreover, in this embodiment, as shown in FIG. 5, when viewed from a cross-section perpendicular to the axial direction, the cross-sectional shape of the upper side shielding surface 40f2b of the curved portion 40b is a curve with a radius R40b centered on the center point P40. Moreover, in this embodiment, as shown in FIG. 5, when viewed from a cross section perpendicular to the axial direction, the cross-sectional shape of the upper side shielding surface 40f2c of the cylindrical portion 40c is a straight line extending in the air flow direction. In addition, the shielding portion 40 may be constituted by only the curved portion 40b.

In addition, in the overflow suppression tool 1A related to this embodiment, the shielding portion 40 has an annular convex portion 40d. In the present embodiment, the annular convex portion 40d rises annularly from the annular portion 40a around the central axis O1 of the overflow suppression device 1A. Moreover, in this embodiment, the shielding portion 40 may be fixed to the upper side end of the peripheral wall 10. Alternatively, the shielding portion 40 may not be fixed to the upper side end of the peripheral wall 10 but be sandwiched between the peripheral wall 10 and the vent valve 140. In addition, in this embodiment, the shielding portion 40 and the shielding portion 20 are the same components. In this case, it is possible to achieve commonality of parts. However, the shielding part 40 may be a different component from the shielding part 20.

According to the overflow restraint device 1A related to this embodiment, the shielding portion 20 shields the inside of the circumferential wall 10 along the circumferential direction of the circumferential wall 10. Therefore, even if a large amount of drainage flows to the drain pipe, the drainage enters the overflow restraint device 1A. In the case, the drainage can still be prevented from flowing into the upper side. Therefore, according to the overflow suppression device 1A related to the present embodiment, the overflow of water from the trap 130 can be suppressed. In addition, according to the overflow suppression device 1A related to the present embodiment, the opening A2 formed on the inner peripheral side of the shielding portion 20 can allow the air in the siphon drain pipe 200 to escape, thereby suppressing the possibility of draining water from the siphon. The sealing water in the pipe 200 is broken. In particular, as in the present embodiment, the shielding portion 20 is a ring-shaped shielding portion that shields the inside of the peripheral wall 10 in a ring shape. The shielding portion 20 can function like a chimney to allow air to enter and exit. It becomes easy. In addition, when the shielding portion 20 is a ring-shaped shielding portion, for example, when the shielding portion 20 is constituted by individual individuals as in this embodiment, the shielding portion 20 can be easily formed.

Furthermore, according to the overflow suppression device 1A related to the present embodiment, since the intermediate shielding portion 30 is located on the upper side of the interior of the peripheral wall 10, the shielding portion is shielded at intervals with respect to the shielding portion 20 The opening A2 of 20, even if a large amount of drainage flows to the siphon drain pipe 200, and the drainage passes through the opening A2 formed by the shielding portion 20 and enters into the overflow suppression device 1A, the drainage can still be suppressed toward the upper side. Inflow. In this case, the overflow of water from the trap 130 can be further suppressed. In addition, according to the overflow suppression device 1A related to the present embodiment, the opening A3 formed around the middle shielding portion 30 can allow the air in the siphon drain pipe 200 to escape, and it is possible to suppress the possibility of the siphon drain pipe from escaping. The sealing water damage occurred within 200. In addition, as in this embodiment, the opening diameter (radius R2b×2) of the opening A2 of the shielding portion 20 is preferably smaller than the outer edge diameter (radius R3a×2) of the outer edge 30e1 of the middle shielding portion 30. In this case, the drainage from the trap 130 will not easily flow into the upper part. On the other hand, the effect of allowing the air in the trap 130 to flow out can be obtained.

In addition, the overflow restraint device 1A related to this embodiment can be clearly seen from FIGS. 3 to 5 and FIGS. 7 and 8, when the overflow restraint device 1A is viewed from the extending direction of the central axis O1, the internal structure of the peripheral wall 10 is Symmetrical structure centered on the central axis O1. In detail, in the overflow suppression tool 1A, the shielding portion 20, the intermediate shielding portion 30, and the shielding portion 40, and the openings A2, A3, and A4 are symmetrical structures centered on the central axis O1. In this case, the structural alignment at the time of connecting the trap 130 and the vent valve 140 becomes easy, and it becomes an overflow suppression device that can be connected with a simple operation. In addition, according to the overflow restraint device related to the present invention, when the overflow restraint device 1A is viewed from the extending direction of the central axis O1, the internal structure of the peripheral wall 10 may not be a symmetrical structure centered on the central axis O1. However, if the installation direction of the overflow suppression device is considered, it is better to be symmetrical.

In addition, in the overflow restraint device 1A related to this embodiment, the shielding portion 20 has a curved portion 20b that faces the lower side as it goes toward the central axis O1 of the overflow restraint device 1A. In this case, since the drainage overflowing from the trap 130 can be efficiently returned to the trap 130 along the lower side shielding surface 20f1 of the curved portion 20b of the shielding portion 20, it is possible to further suppress water from being trapped. The device 130 overflows.

In addition, in the overflow suppression tool 1A related to this embodiment, the middle shielding portion 30 has a curved portion 30b that protrudes from the upper side as it goes downstream. In this case, even when the drainage overflowing from the trap 130 enters through the opening A2 formed by the shielding portion 20, the drainage overflowing from the trap 130 can still be made to follow the curve of the intermediate shielding portion 30 The lower side shielding surface 30f1 of the shape portion 30b returns to the trap 130 efficiently, so that the overflow of water from the trap 130 can be further suppressed. Especially in this embodiment, the upper side shielding surface 30f2 of the middle shielding portion 30 is equipped with There is an upper side shielding surface 30f2a of the cylindrical portion 30a. In this case, it is possible to obtain the effect of preventing the water that may be spilled due to the vibration of the processor 111 from entering the inside of the vent valve 140. In addition, in this embodiment, as shown in FIG. 6, the middle shielding portion 30 is viewed from a cross-section perpendicular to the axial direction. Although it is shaped into a dome shape, it can also be shaped into a cone or pyramid shape such as an umbrella shape. Shape, or cube-like shape.

In addition, in the overflow suppression tool 1A, a total of three or more shielding portions 20 and intermediate shielding portions 30 are alternately arranged from the lower side to the upper side. In the present embodiment, the overflow restraint device 1A is alternately and repeatedly arranged with a total of three shielding portions 20, intermediate shielding portions 30, and shielding portions 40 from the lower side to the upper side. In the general situation described above, by increasing the number of shielding parts, the water overflow from the trap 130 can be further suppressed.

In addition, in the overflow suppression tool 1A related to the present embodiment, the shielding portions 20 and 40 are configured as components different from the peripheral wall 10. In this embodiment, the peripheral wall 10 may be formed of, for example, resin, metal, or elastomer. In addition, in this embodiment, the shielding portions 20 and 40 may also be formed of, for example, resin, metal, or elastomer. In this embodiment, the shielding portions 20 and 40 are formed of elastic bodies such as rubber. In this case, the shielding portions 20 and 40 can function as gaskets (sealing components).

In addition, the siphon drainage system 100 in FIG. 1 has a trap 130, a vent valve 140, a cylindrical peripheral wall 10 arranged between the trap 130 and the vent valve 140, and the interior of the peripheral wall is shielded along the circumferential direction of the peripheral wall 10 The shielding portion 20, the other shielding portion 30 that shields the opening A2 formed by the shielding portion 20 at intervals on the upper side inside the peripheral wall 10, and the other shielding portion 30 that forms another opening A3 around the other shielding portion 30 The other shielding portion 30 is fixed to the fixing piece 31 of the peripheral wall 10. The siphon drainage system 100 of FIG. 1 has a drainage pipe structure A as shown in the figure. As shown in the area A, the drainage pipe structure A related to this embodiment has a trap 130, a vent valve 140, and an overflow suppression device 1A arranged between the trap 130 and the vent valve 140. As shown in FIG. 5, the overflow suppression device 1A has a peripheral wall 10 arranged between the trap 130 and the vent valve 140. In addition, the overflow suppression device 1A has a shielding portion 20 that shields the inside of the peripheral wall 10 along the circumferential direction of the peripheral wall 10, and an opening A2 formed on the inner peripheral side of the shielding portion 20 at intervals on the upper side of the interior of the peripheral wall 10 The middle shielding part 30 and the fixing piece 31 that fixes the middle shielding part 30 to the peripheral wall 10 so that another opening A3 is formed around the middle shielding part 30. Therefore, according to the drainage pipe structure A related to this embodiment, it becomes a drain capable of suppressing the overflow of water from the trap 130. Water pipe structure. In addition, in the drainage pipe structure 1A related to this embodiment, although the overflow suppression device 1A is arranged between the trap 130 and the vent valve 140, the above structure becomes an attached drainage pipe structure. In the drainage pipe structure related to the present invention, as long as the cylindrical peripheral wall 10, the shielding portion 20, the other shielding portions 30, and the fixing piece 31 can be arranged between the trap 130 and the vent valve 140, they do not need to be used as The overflow suppression device 1A is assembled.

FIG. 9 is a side perspective view schematically showing the overflow suppression device 1B related to the second embodiment of the present invention. Fig. 10 is a perspective view schematically showing a cross-section of the overflow restraint device 1B corresponding to the A-A section of Fig. 2. Hereinafter, in the overflow suppression device 1B related to the present embodiment, the same components as the overflow suppression device 1A related to the first embodiment use the same reference numerals, and the description thereof is omitted.

In the overflow suppression device 1B related to this embodiment, the peripheral wall 10, the shielding portion 20, the intermediate shielding portion 30, and the shielding portion 40 are integrally formed. In this case, the overflow suppression tool 1B may be integrally formed of the same material such as resin.

The above is only a description of several implementation modes of the present invention, and various changes can be made according to the scope of the patent application. For example, as long as the shielding portion 20 shields the interior of the peripheral wall 10 along the circumferential direction of the peripheral wall 10, it may also intermittently shield the interior of the peripheral wall 10 along the circumferential direction of the peripheral wall 10. That is, the shielding portion 20 is not limited to a ring-shaped shielding portion. In addition, it is preferable that the shielding portion 20 is on the lower side of the inside of the peripheral wall 10 and has a shielding portion at a position that can be introduced at least on the upstream side of the water flow at the time of drainage. A specific example of the above-mentioned general shielding portion 20 includes a shielding portion having a semicircular shape when viewed from the axial direction of the peripheral wall 10. In this case, the upstream side of the water flow that can be introduced into the drainage is shielded by the shielding portion 20. On the other hand, the downstream side is formed by the shielding portion 20 and the inner peripheral surface of the peripheral wall 10 The gap to allow the flow of air. The above-mentioned generally non-annular shielding portion 20 is effective when the internal structure of the peripheral wall 10 is asymmetrical.

In each of the above embodiments, the overflow suppression devices 1A and 1B are constructed as a separate unit from the vent valve 140 in terms of their versatility with existing vent valves, but they can also be integrally formed with the vent valve 140 . In addition, although the overflow suppression device related to the present invention is preferably arranged between the vent valve and the drain pipe, it can also be arranged between the vent and the drain pipe. Furthermore, in each of the above embodiments, although the overflow suppression devices 1A and 1B are arranged on the trap 130, they can also be arranged on the connecting pipes 120 and 1 as long as they can discharge the air in the siphon drain pipe 200. Any one of the catcher 130, the straight pipe 150, the horizontal pipe 160, and the vertical pipe 170 is at any position. Further, it can be combined with each other and Use the various configurations adopted by the above-mentioned implementation types. In addition, the various configurations adopted in the above-mentioned embodiments may be replaced with each other as appropriate.

1A: Overflow suppression device

10: Zhou wall

10n: Annular recess

11: Lower end

12: Upper end

20: Shading part

20a: Ring part

20b: Curved shape part

20c: cylindrical part

20d: Ring convex

20f1, 20f1a, 20f1b, 20f1c: lower side shielding surface

20f2, 20f2a, 20f2b, 20f2c: upper side shielding surface

30: Intermediate shielding part

30a: cylinder

30b: Curved shape part

30f1: lower side shielding surface

30f2: Upper side shielding surface

31: fixed piece

40: Shading part

40a: Ring part

40b: Curved shape part

40c: cylindrical part

40f1, 40f1a, 40f1b, 40f1c: upper side shielding surface

40f2, 40f2a, 40f2b, 40f2c: upper side shielding surface

40d: Ring convex

A2: Opening

O1, O10, O20, O30, O40: central axis

P20, P40: center point

R20a, R20b, R40a, R40b: radius

Claims (6)

An overflow restraint device, comprising: a cylindrical peripheral wall that can be connected to a drain pipe; and a shielding part that shields the inside of the peripheral wall along the circumference of the peripheral wall; the shielding part is a ring that shields the inside of the peripheral wall in a ring shape The shielding portion; has: other shielding portions that are spaced apart on the upper side of the peripheral wall to shield the openings formed on the inner peripheral side of the shielding portion; and a fixing piece to form other shielding portions around the other shielding portion The method of opening part is to fix the other shielding part to the peripheral wall. For example, the overflow restraint device of item 1 of the scope of patent application, when the overflow restraint device is viewed from the extending direction of the central axis of the overflow restraint device, the internal structure of the peripheral wall is a symmetrical structure centered on the axis. For example, the water overflow restraint device of item 1 or 2 of the scope of patent application, wherein the shielding portion has a curved portion that faces the lower side as it faces the central axis of the overflow restraint device. For example, the overflow restraint device of item 1 of the scope of patent application, wherein the other shielding portion has a curved portion that protrudes from the upper side as it faces the central axis of the overflow restraint. For example, the overflow suppression device of the first item in the scope of the patent application has a total of more than three shielding parts and the other shielding parts alternately and repeatedly arranged from the lower side to the upper side. A drainage pipe structure comprising: a drainage pipe; a vent valve; a cylindrical peripheral wall arranged between the drainage pipe and the vent valve; a shielding portion that shields the interior of the peripheral wall along the circumferential direction of the peripheral wall; other shielding portions , Is to shield the openings formed by the shielding portion at intervals on the upper side of the inside of the peripheral wall; and the fixing piece is to fix the other shielding portion to the other shielding portion by forming other openings around the other shielding portion The wall of the week.

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